diff --git a/build/app.js b/build/app.js
new file mode 100644
index 00000000000..67817305042
--- /dev/null
+++ b/build/app.js
@@ -0,0 +1,11 @@
+/**
+ * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.
+ * For licensing, see LICENSE.md.
+ */
+var _NumberPOSITIVE_INFINITY=Number.POSITIVE_INFINITY,_Mathfloor=Math.floor,_Mathmax=Math.max,_Mathmin=Math.min;(function(o){function r(d){if(s[d])return s[d].exports;var u=s[d]={i:d,l:!1,exports:{}};return o[d].call(u.exports,u,u.exports,r),u.l=!0,u.exports}var s={};return r.m=o,r.c=s,r.i=function(d){return d},r.d=function(d,u,f){r.o(d,u)||Object.defineProperty(d,u,{configurable:!1,enumerable:!0,get:f})},r.n=function(d){var u=d&&d.__esModule?function(){return d['default']}:function(){return d};return r.d(u,'a',u),u},r.o=function(d,u){return Object.prototype.hasOwnProperty.call(d,u)},r.p='',r(r.s=527)})([function(o,r){'use strict';class d extends Error{constructor(u,f){f&&(u+=' '+JSON.stringify(f)),super(u),this.name='CKEditorError',this.data=f}static isCKEditorError(u){return u instanceof d}}r.a=d},function(o,r,s){'use strict';var d=s(33),u=s(19),f=s(62),h=s(0),w=s(25);class C{constructor(T,P){if(!T.is('element')&&!T.is('documentFragment'))throw new h.a('model-position-root-invalid: 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Root with specified name does not exist.',{rootName:T.root});return new C(P.getRoot(T.root),T.path)}}r.a=C},function(o,r,s){'use strict';var d=s(31),u=s(4);class f{constructor(h){this.editor=h}init(){}afterInit(){}destroy(){}}r.a=f,s.i(u.a)(f,d.a)},function(o,r,s){'use strict';var d=s(1),u=s(33),f=s(0);class h{constructor(w,C=null){this.start=d.a.createFromPosition(w),this.end=C?d.a.createFromPosition(C):d.a.createFromPosition(w)}*[Symbol.iterator](){yield*new u.a({boundaries:this,ignoreElementEnd:!0})}get isCollapsed(){return this.start.isEqual(this.end)}get isFlat(){return this.start.parent===this.end.parent}get root(){return this.start.root}containsPosition(w){return w.isAfter(this.start)&&w.isBefore(this.end)}containsRange(w){return this.containsPosition(w.start)&&this.containsPosition(w.end)}isEqual(w){return this.start.isEqual(w.start)&&this.end.isEqual(w.end)}isIntersecting(w){return this.start.isBefore(w.end)&&this.end.isAfter(w.start)}getDifference(w){const C=[];return 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this.mapper.bindElements(V,O),O}destroy(){this.view.destroy(),this._listener.stopListening()}}},function(o,r,s){'use strict';function u(P){const S=[];Array.from(P.getItems({direction:'backward'})).map((E)=>h.a.createOn(E)).filter((E)=>{const O=(E.start.isAfter(P.start)||E.start.isEqual(P.start))&&(E.end.isBefore(P.end)||E.end.isEqual(P.end));return O}).forEach((E)=>{S.push(E.start.parent),s.i(T.c)(E)}),S.forEach((E)=>{for(let O=E;O.parent&&O.isEmpty;){const V=h.a.createOn(O);O=O.parent,s.i(T.c)(V)}})}var f=s(49),h=s(3),w=s(1),C=s(25),T=s(13);r.a=function(P){const S=new f.a,E=P.getFirstRange();if(!E||E.isCollapsed)return S;const O=E.start.root,V=E.start.getCommonPath(E.end),F=O.getNodeByPath(V);let R=E.start.parent==E.end.parent?E:h.a.createFromParentsAndOffsets(F,E.start.path[V.length],F,E.end.path[V.length]+1);const N=R.end.offset-R.start.offset;for(const M of R.getItems({shallow:!0}))M.is('textProxy')?S.appendChildren(new C.a(M.data,M.getAttributes())):S.appendChildren(M.clone(!0));if(R!=E){const M=E._getTransformedByMove(R.start,w.a.createAt(S,0),N)[0],I=new h.a(w.a.createAt(S),M.start),L=new h.a(M.end,w.a.createAt(S,'end'));u(L),u(I)}return S}},function(o,r,s){'use strict';var u=s(1),f=s(163),h=s(5),w=s(3),C=s(48);r.a=function(P,S,E,O){O||(O=P.model.batch()),E.isCollapsed||P.deleteContent(E,O,{merge:!0});const V=new T(P,O,E.anchor);let F;F=S.is('documentFragment')?S.getChildren():[S],V.handleNodes(F,{isFirst:!0,isLast:!0});const R=V.getSelectionRange();R?E.setRanges([R]):C.a.warn('insertcontent-no-range: Cannot determine a proper selection range after insertion.')};class T{constructor(P,S,E){this.dataController=P,this.batch=S,this.position=E,this.canMergeWith=new Set([this.position.parent]),this.schema=P.model.schema}handleNodes(P,S){P=Array.from(P);for(let E=0;E<P.length;E++){const O=P[E];this._handleNode(O,{isFirst:0===E&&S.isFirst,isLast:E===P.length-1&&S.isLast})}}getSelectionRange(){return 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S=f.a.createFromPosition(this.position);this.batch.insert(this.position,P),this.position=u.a.createFromPosition(S),S.detach(),this.nodeToSelect=this._checkIsObject(P)&&!this.schema.check({name:'$text',inside:[this.position.parent]})?P:null}_mergeSiblingsOf(P,S){if(P instanceof h.a){const E=S.isFirst&&P.previousSibling instanceof h.a&&this.canMergeWith.has(P.previousSibling),O=S.isLast&&P.nextSibling instanceof h.a&&this.canMergeWith.has(P.nextSibling),V=f.a.createBefore(P),F=f.a.createAfter(P);if(E){const R=f.a.createFromPosition(this.position);this.batch.merge(V),this.position=u.a.createFromPosition(R),R.detach()}if(O){let R;this.position.isEqual(F)||C.a.error('insertcontent-wrong-position-on-merge: The insertion position should equal the merge position'),this.position=u.a.createAt(F.nodeBefore,'end'),R=new f.a(this.position.root,this.position.path,'sticksToPrevious'),this.batch.merge(F),this.position=u.a.createFromPosition(R),R.detach()}V.detach(),F.detach()}}_tryAutoparagraphing(P,S){const E=new h.a('paragraph');this._getAllowedIn(E,this.position.parent)&&this._checkIsAllowed(P,[E])&&(E.appendChildren(P),this._handleNode(E,S))}_checkAndSplitToAllowedPosition(P){const S=this._getAllowedIn(P,this.position.parent);if(!S)return!1;for(;S!=this.position.parent;){if(this.schema.limits.has(this.position.parent.name))return!1;if(this.position.isAtStart){const E=this.position.parent;this.position=u.a.createBefore(E),E.isEmpty&&this.batch.remove(E)}else if(this.position.isAtEnd)this.position=u.a.createAfter(this.position.parent);else{const E=u.a.createAfter(this.position.parent);this.batch.split(this.position),this.position=E,this.canMergeWith.add(this.position.nodeAfter)}}return!0}_getAllowedIn(P,S){return 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J._insertOperation.position.offset++,J._moveOperation.howMany++,J._moveOperation.targetPosition.path[J._moveOperation.targetPosition.path.length-2]++,[J]}return s.i(h.c)(H,W,U)}),s.i(h.b)(z.a,I.a,(H,W,U)=>{const Z=new C.a(W.position.root,W.position.path.slice(0,-1)),G=s.i(h.c)(H,W,U);if(H.operations[0].position.isEqual(Z)){const J=H.clone();J.operations[0].position=H.operations[0].position.getShiftedBy(1),G.push(J)}return G}),s.i(h.b)(I.a,z.a,(H,W)=>{H=H.clone();const U=new C.a(H.position.root,H.position.path.slice(0,-1));return H._cloneOperation instanceof S.a&&W.operations[0].position.isEqual(U)&&(H._cloneOperation.nodes.getNode(0).name=W.operations[0].newName),[H]}),s.i(h.b)(K.a,I.a,(H,W,U)=>{const Z=s.i(h.c)(H,W,U),G=W._cloneOperation.position;for(let J of Z)for(let Q of J.operations){const Y=Q.sourcePosition.getShiftedBy(Q.howMany);Y.isEqual(G)&&(Q.howMany+=1)}return Z}),s.i(h.b)(I.a,K.a,(H,W,U)=>{W=W.clone();const Z=H._cloneOperation.position;for(let G of W.operations){const J=G.sourcePosition.getShiftedBy(G.howMany);J.isEqual(Z)&&(G.howMany+=1)}return s.i(h.c)(H,W,U)})},function(o,r,s){'use strict';function d(P,S,E,O){const V=P.document,F=new T,R=new w.a(S,E,O,V.markers,V.version);P.addDelta(F),F.addOperation(R),V.applyOperation(R)}var u=s(20),f=s(18),h=s(17),w=s(110),C=s(0);class T extends u.a{get type(){return'marker'}get _reverseDeltaClass(){return T}static get className(){return'engine.model.delta.MarkerDelta'}}r.a=T,s.i(h.b)('setMarker',function(P,S){const E='string'==typeof P?P:P.name,O=this.document.markers.get(E);if(!S&&!O)throw new C.a('batch-setMarker-no-range: Range parameter is required when adding a new marker.');const V=O?O.getRange():null;return S?d(this,E,V,S):d(this,E,null,V),this}),s.i(h.b)('removeMarker',function(P){const S='string'==typeof P?P:P.name;if(!this.document.markers.has(S))throw new C.a('batch-removeMarker-no-marker: Trying to remove marker that does not exist.');const E=this.document.markers.get(S).getRange();return d(this,S,E,null),this}),f.a.register(T)},function(o,r,s){'use strict';function d(z){const K=z.textNode;if(K){const $=K.data,H=z.offset-K.startOffset;return!s.i(L.a)($,H)&&!s.i(L.b)($,H)}return!0}function*u(z,K){for(let $=!1;!$;){if($=!0,z){const H=z.next();H.done||($=!1,yield{walker:z,value:H.value})}if(K){const H=K.next();H.done||($=!1,yield{walker:K,value:H.value})}}}var f=s(306),h=s(307),w=s(3),C=s(1),T=s(315),P=s(17),S=s(310),E=s(311),O=s(316),V=s(33),F=s(312),R=s(94),N=s(7),M=s(0),I=s(4),L=s(271);const D='$graveyard';class q{constructor(){this.version=0,this.schema=new O.a,this.history=new S.a(this),this.markers=new F.a,this.selection=new E.a(this),this._pendingChanges=[],this.roots=new Map,this.selection.on('change:range',()=>{for(let z of this.selection.getRanges())if(!this._validateSelectionRange(z))throw new M.a('document-selection-wrong-position: Range from document selection starts or ends at incorrect position.',{range:z})}),this.createRoot('$root',D)}get graveyard(){return this.getRoot(D)}applyOperation(z){if(z.baseVersion!==this.version)throw new M.a('model-document-applyOperation-wrong-version: Only operations with matching versions can be applied.',{operation:z});let K=z._execute();this.version++,this.history.addDelta(z.delta),K&&this.fire('change',z.type,K,z.delta.batch,z.delta.type)}batch(z){return new P.a(this,z)}createRoot(z='$root',K='main'){if(this.roots.has(K))throw new M.a('model-document-createRoot-name-exists: Root with specified name already exists.',{name:K});const $=new T.a(this,z,K);return this.roots.set(K,$),$}destroy(){this.selection.destroy(),this.stopListening()}enqueueChanges(z){if(this._pendingChanges.push(z),1==this._pendingChanges.length){for(;this._pendingChanges.length;)this._pendingChanges[0](),this._pendingChanges.shift();this.fire('changesDone')}}getRoot(z='main'){if(!this.roots.has(z))throw new M.a('model-document-getRoot-root-not-exist: Root with specified name does not exist.',{name:z});return this.roots.get(z)}hasRoot(z){return this.roots.has(z)}getRootNames(){return Array.from(this.roots.keys()).filter((z)=>z!=D)}getNearestSelectionRange(z,K='both'){if(this.schema.check({name:'$text',inside:z}))return new w.a(z);let $,H;('both'==K||'backward'==K)&&($=new V.a({startPosition:z,direction:'backward'})),('both'==K||'forward'==K)&&(H=new V.a({startPosition:z}));for(let W of u($,H)){const U=W.walker==$?'elementEnd':'elementStart',Z=W.value;if(Z.type==U&&this.schema.objects.has(Z.item.name))return w.a.createOn(Z.item);if(this.schema.check({name:'$text',inside:Z.nextPosition}))return new w.a(Z.nextPosition)}return null}toJSON(){const z=s.i(R.a)(this);return z.selection='[engine.model.LiveSelection]',z}_getDefaultRoot(){for(let z of this.roots.values())if(z!==this.graveyard)return z;return this.graveyard}_getDefaultRange(){const z=this._getDefaultRoot(),K=new C.a(z,[0]),$=this.getNearestSelectionRange(K);return $||new w.a(K)}_validateSelectionRange(z){return d(z.start)&&d(z.end)}}r.a=q,s.i(I.a)(q,N.a)},function(o,r,s){'use strict';var d=s(0);r.a=class{constructor(){this._deltas=[],this._historyPoints=new Map}addDelta(f){if(0<f.operations.length&&!this._historyPoints.has(f.baseVersion)){const h=this._deltas.length;this._deltas[h]=f,this._historyPoints.set(f.baseVersion,h)}}*getDeltas(f=0,h=_NumberPOSITIVE_INFINITY){if(0!==this._deltas.length){let w=this._getIndex(f);if(-1!=w)for(;w<this._deltas.length;){const C=this._deltas[w++];if(C.baseVersion>=h)break;yield C}}}getDelta(f){let h=this._historyPoints.get(f);if(h===void 0)return null;const w=[];for(h;h<this._deltas.length;h++){const C=this._deltas[h];if(C.baseVersion!=f)break;w.push(C)}return 0===w.length?null:w}removeDelta(f){this.updateDelta(f,[])}updateDelta(f,h){const w=this.getDelta(f);if(null!==w){for(let T of h)T.baseVersion=f;this._deltas.splice(this._getIndex(f),w.length,...h);const C=h.length-w.length;for(let T of this._historyPoints.keys())T>f&&this._historyPoints.set(T,this._historyPoints.get(T)+C)}}_getIndex(f){let h=this._historyPoints.get(f);if(h===void 0){const w=this._deltas[this._deltas.length-1],C=w.baseVersion+w.operations.length;if(0>f||f>=C)return-1;throw new d.a('model-history-wrong-version: Given base version points to the middle of a delta.')}return h}}},function(o,r,s){'use strict';function d(R){return R instanceof C.a||R instanceof w.a?R.getAttributes():null}var u=s(1),f=s(3),h=s(109),w=s(25),C=s(58),T=s(150),P=s(0),S=s(48),E=s(57);const O='selection:',V=new Set(['addAttribute','removeAttribute','changeAttribute','addRootAttribute','removeRootAttribute','changeRootAttribute']);class F extends E.a{constructor(R){super(),this._document=R,this._attributePriority=new Map,this.listenTo(this._document,'change',(N,M)=>{V.has(M)&&this._updateAttributes(!1)})}get isCollapsed(){const R=this._ranges.length;return!(0!==R)||super.isCollapsed}get anchor(){return super.anchor||this._document._getDefaultRange().start}get focus(){return super.focus||this._document._getDefaultRange().start}get rangeCount(){return this._ranges.length?this._ranges.length:1}destroy(){for(let R=0;R<this._ranges.length;R++)this._ranges[R].detach();this.stopListening()}*getRanges(){this._ranges.length?yield*super.getRanges():yield this._document._getDefaultRange()}getFirstRange(){return super.getFirstRange()||this._document._getDefaultRange()}getLastRange(){return super.getLastRange()||this._document._getDefaultRange()}addRange(R,N=!1){super.addRange(R,N),this.refreshAttributes()}removeAllRanges(){super.removeAllRanges(),this.refreshAttributes()}setRanges(R,N=!1){super.setRanges(R,N),this.refreshAttributes()}setAttribute(R,N){if(this.isCollapsed&&0===this.anchor.parent.childCount&&this._storeAttribute(R,N),this._setAttribute(R,N)){this.fire('change:attribute',{attributeKeys:[R],directChange:!0})}}removeAttribute(R){if(this.isCollapsed&&0===this.anchor.parent.childCount&&this._removeStoredAttribute(R),this._removeAttribute(R)){this.fire('change:attribute',{attributeKeys:[R],directChange:!0})}}setAttributesTo(R){R=s.i(T.a)(R),this.isCollapsed&&0===this.anchor.parent.childCount&&this._setStoredAttributesTo(R);const N=this._setAttributesTo(R);if(0<N.size){const M=Array.from(N);this.fire('change:attribute',{attributeKeys:M,directChange:!0})}}clearAttributes(){this.setAttributesTo([])}refreshAttributes(){this._updateAttributes(!0)}static createFromSelection(R){const N=new this(R._document);return N.setTo(R),N}_popRange(){this._ranges.pop().detach()}_pushRange(R){const N=this._prepareRange(R);N&&this._ranges.push(N)}_prepareRange(R){if(!(R instanceof f.a))throw new P.a('model-selection-added-not-range: Trying to add an object that is not an instance of Range.');if(R.root==this._document.graveyard)return void S.a.warn('model-selection-range-in-graveyard: Trying to add a Range that is in the graveyard root. Range rejected.');this._checkRange(R);const N=h.a.createFromRange(R);return this.listenTo(N,'change',(M,I)=>{N.root==this._document.graveyard&&this._fixGraveyardSelection(N,I),this.fire('change:range',{directChange:!1})}),N}_updateAttributes(R){const N=s.i(T.a)(this._getSurroundingAttributes()),M=s.i(T.a)(this.getAttributes());if(R)this._attributePriority=new Map,this._attrs=new Map;else for(let[L,D]of this._attributePriority)'low'==D&&(this._attrs.delete(L),this._attributePriority.delete(L));this._setAttributesTo(N,!1);const I=[];for(let[L,D]of this.getAttributes())M.has(L)&&M.get(L)===D||I.push(L);for(let[L]of M)this.hasAttribute(L)||I.push(L);0<I.length&&this.fire('change:attribute',{attributeKeys:I,directChange:!1})}static _getStoreAttributeKey(R){return O+R}_setAttribute(R,N,M=!0){const I=M?'normal':'low';if('low'==I&&'normal'==this._attributePriority.get(R))return!1;const L=super.getAttribute(R);return L!==N&&(this._attrs.set(R,N),this._attributePriority.set(R,I),!0)}_removeAttribute(R,N=!0){const M=N?'normal':'low';return'low'==M&&'normal'==this._attributePriority.get(R)?!1:!!super.hasAttribute(R)&&(this._attrs.delete(R),this._attributePriority.set(R,M),!0)}_setAttributesTo(R,N=!0){const M=new Set;for(let[I,L]of this.getAttributes())R.get(I)!==L&&this._removeAttribute(I,N)&&M.add(I);for(let[I,L]of R){const D=this._setAttribute(I,L,N);D&&M.add(I)}return M}*_getStoredAttributes(){const R=this.getFirstPosition().parent;if(this.isCollapsed&&0===R.childCount)for(let N of R.getAttributeKeys())if(0===N.indexOf(O)){const M=N.substr(O.length);yield[M,R.getAttribute(N)]}}_removeStoredAttribute(R){const N=F._getStoreAttributeKey(R);this._document.batch().removeAttribute(this.anchor.parent,N)}_storeAttribute(R,N){const M=F._getStoreAttributeKey(R);this._document.batch().setAttribute(this.anchor.parent,M,N)}_setStoredAttributesTo(R){const N=this.anchor.parent,M=this._document.batch();for(let[I]of this._getStoredAttributes()){const L=F._getStoreAttributeKey(I);M.removeAttribute(N,L)}for(let[I,L]of R){const D=F._getStoreAttributeKey(I);M.setAttribute(N,D,L)}}_getSurroundingAttributes(){const R=this.getFirstPosition();let N=null;if(!this.isCollapsed){const M=this.getFirstRange();for(let I of M)'text'==I.type&&null==N&&(N=I.item.getAttributes())}else{const M=R.textNode?R.textNode:R.nodeBefore,I=R.textNode?R.textNode:R.nodeAfter;if(N=d(M),N||(N=d(I)),!N)for(let L=M;L&&!N;)L=L.previousSibling,N=d(L);if(!N)for(let L=I;L&&!N;)L=L.nextSibling,N=d(L);N||(N=this._getStoredAttributes())}return N}_fixGraveyardSelection(R,N){const M=R.start.path,I=N.start.path.length-(M.length-2),L=N.start.path.slice(0,I);L[L.length-1]-=M[1];const D=new u.a(N.root,L);let q=this._document.getNearestSelectionRange(D);q||(q=new f.a(new u.a(D.root,[0])));const z=this._prepareRange(q),K=this._ranges.indexOf(R);R.detach(),this._ranges.splice(K,1,z)}}r.a=F},function(o,r,s){'use strict';var d=s(109),u=s(1),f=s(3),h=s(7),w=s(0),C=s(4);class T{constructor(){this._markers=new Map}[Symbol.iterator](){return this._markers.values()}has(S){return this._markers.has(S)}get(S){return this._markers.get(S)||null}set(S,E){const O=S instanceof P?S.name:S,V=this._markers.get(O);if(V){const N=V.getRange();if(N.isEqual(E))return V;this.remove(O)}const F=d.a.createFromRange(E),R=new P(O,F);return this._markers.set(O,R),this.fire('add',R),R}remove(S){const E=S instanceof P?S.name:S,O=this._markers.get(E);return!!O&&(this._markers.delete(E),this.fire('remove',O),this._destroyMarker(O),!0)}*getMarkersAtPosition(S){for(let E of this)E.getRange().containsPosition(S)&&(yield E)}destroy(){for(let S of this._markers.values())this._destroyMarker(S);this._markers=null,this.stopListening()}*getMarkersGroup(S){for(let E of this._markers.values())E.name.startsWith(S+':')&&(yield E)}_destroyMarker(S){S.stopListening(),S._liveRange.detach(),S._liveRange=null}}r.a=T,s.i(C.a)(T,h.a);class P{constructor(S,E){this.name=S,this._liveRange=E,this._liveRange.delegate('change').to(this)}getStart(){if(!this._liveRange)throw new w.a('marker-destroyed: Operating on destroyed marker instance.');return u.a.createFromPosition(this._liveRange.start)}getEnd(){if(!this._liveRange)throw new w.a('marker-destroyed: Operating on destroyed marker instance.');return u.a.createFromPosition(this._liveRange.end)}getRange(){if(!this._liveRange)throw new w.a('marker-destroyed: Operating on destroyed marker instance.');return f.a.createFromRange(this._liveRange)}}s.i(C.a)(P,h.a)},function(o,r,s){'use strict';var d=s(72),u=s(39),f=s(110),h=s(28),w=s(73),C=s(32),T=s(111),P=s(40),S=s(112),E=s(113);const 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T.a(K,I.key,I.oldValue,I.newValue,I.baseVersion)});const z=I.range.getIntersection(L.range);return z&&(D?q.push(new T.a(z,L.key,L.newValue,I.newValue,I.baseVersion)):0===q.length&&q.push(new F.a(0))),q}return[I.clone()]},RootAttributeOperation:u,RenameOperation:u,MarkerOperation:u,MoveOperation(I,L){const D=R.a.createFromPositionAndShift(L.sourcePosition,L.howMany);let q=[];L instanceof V.a&&L._needsHolderElement&&I.range.root==L.targetPosition.root&&I.range.start.path[0]>=L._holderElementOffset&&(I=I.clone(),I.range.start.path[0]++,I.range.end.path[0]++);const z=w(I.range.getDifference(D)),K=I.range.getIntersection(D);return null!==z&&(z.start=z.start._getTransformedByDeletion(L.sourcePosition,L.howMany),z.end=z.end._getTransformedByDeletion(L.sourcePosition,L.howMany),q=z._getTransformedByInsertion(L.getMovedRangeStart(),L.howMany,!0,!1).reverse()),null!==K&&(K.start=K.start._getCombined(L.sourcePosition,L.getMovedRangeStart()),K.end=K.end._getCombined(L.sourcePosition,L.getMovedRangeStart()),q.push(K)),q.map(($)=>{return new T.a($,I.key,I.oldValue,I.newValue,I.baseVersion)})}},RootAttributeOperation:{InsertOperation:u,AttributeOperation:u,RootAttributeOperation(I,L,D){return I.root!==L.root||I.key!==L.key||(I.newValue===L.newValue||D)&&I.newValue!==L.newValue?[I.clone()]:[new F.a(I.baseVersion)]},RenameOperation:u,MarkerOperation:u,MoveOperation:u},RenameOperation:{InsertOperation(I,L){const D=I.clone();return D.position=D.position._getTransformedByInsertion(L.position,L.nodes.maxOffset,!0),[D]},AttributeOperation:u,RootAttributeOperation:u,RenameOperation(I,L,D){const q=I.clone();if(I.position.isEqual(L.position))if(D)q.oldName=L.newName;else return[new F.a(I.baseVersion)];return[q]},MarkerOperation:u,MoveOperation(I,L){const D=I.clone(),q=D.position.isEqual(L.sourcePosition);return D.position=D.position._getTransformedByMove(L.sourcePosition,L.targetPosition,L.howMany,!0,q),[D]}},MarkerOperation:{InsertOperation(I,L){const D=I.clone();return D.oldRange&&(D.oldRange=D.oldRange._getTransformedByInsertion(L.position,L.nodes.maxOffset,!1,!1)[0]),D.newRange&&(D.newRange=D.newRange._getTransformedByInsertion(L.position,L.nodes.maxOffset,!1,!1)[0]),[D]},AttributeOperation:u,RootAttributeOperation:u,RenameOperation:u,MarkerOperation(I,L,D){const q=I.clone();if(I.name==L.name)if(D)q.oldRange=L.newRange;else return[new F.a(I.baseVersion)];return[q]},MoveOperation(I,L){const D=I.clone();if(D.oldRange){const q=D.oldRange._getTransformedByMove(L.sourcePosition,L.targetPosition,L.howMany);D.oldRange=R.a.createFromRanges(q)}if(D.newRange){const 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V.a)?D=!0:!(I instanceof V.a)&&L instanceof V.a&&(D=!1);const q=R.a.createFromPositionAndShift(I.sourcePosition,I.howMany),z=R.a.createFromPositionAndShift(L.sourcePosition,L.howMany);let K=[],$=w(q.getDifference(z));$&&($.start=$.start._getTransformedByMove(L.sourcePosition,L.targetPosition,L.howMany,!I.isSticky,!1),$.end=$.end._getTransformedByMove(L.sourcePosition,L.targetPosition,L.howMany,I.isSticky,!1),K.push($));const H=q.getIntersection(z);let 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T=C.ownerDocument;this._documents.has(T)||(this.listenTo(T,'selectionchange',()=>{this._handleSelectionChange(T)}),this._documents.add(T))}destroy(){super.destroy(),clearInterval(this._clearInfiniteLoopInterval),this._fireSelectionChangeDoneDebounced.cancel()}_handleSelectionChange(C){if(this.isEnabled&&this.document.isFocused){this.mutationObserver.flush();const T=C.defaultView.getSelection(),P=this.domConverter.domSelectionToView(T);if(!this.selection.isEqual(P)){if(60<++this._loopbackCounter)return void f.a.warn('selectionchange-infinite-loop: Selection change observer detected an infinite rendering loop.');const S={oldSelection:this.selection,newSelection:P,domSelection:T};this.document.fire('selectionChange',S),this._fireSelectionChangeDoneDebounced(S)}}}_clearInfiniteLoop(){this._loopbackCounter=0}}r.a=w},function(o,r,s){'use strict';function u(V){const F=V.document;V.removeClass('ck-placeholder'),V.removeAttribute('data-placeholder'),O.has(F)&&O.get(F).delete(V)}function 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f=s(29),h=s(26),w=s(61),C=s(59),T=s(4),P=s(185),S=s(392),E=s(396),O=s(48),V=s(31),F=s(0);class R{constructor(N,M){this.domDocuments=new Set,this.domConverter=N,this.markedAttributes=new Set,this.markedChildren=new Set,this.markedTexts=new Set,this.selection=M,this._inlineFiller=null,this.isFocused=!1,this._fakeSelectionContainer=null}markToSync(N,M){if('text'===N)this.domConverter.getCorrespondingDom(M.parent)&&this.markedTexts.add(M);else{if(!this.domConverter.getCorrespondingDom(M))return;if('attributes'===N)this.markedAttributes.add(M);else if('children'===N)this.markedChildren.add(M);else throw new F.a('view-renderer-unknown-type: Unknown type passed to Renderer.markToSync.')}}render(){let N;this._inlineFiller&&!this._isSelectionInInlineFiller()&&this._removeInlineFiller(),this._inlineFiller?N=this._getInlineFillerPosition():this._needsInlineFillerAtSelection()&&(N=this.selection.getFirstPosition(),this.markedChildren.add(N.parent));for(let M of this.markedTexts)!this.markedChildren.has(M.parent)&&this.domConverter.getCorrespondingDom(M.parent)&&this._updateText(M,{inlineFillerPosition:N});for(let M of this.markedAttributes)this._updateAttrs(M);for(let M of this.markedChildren)this._updateChildren(M,{inlineFillerPosition:N});this._updateSelection(),this._updateFocus(),this.markedTexts.clear(),this.markedAttributes.clear(),this.markedChildren.clear(),this._inlineFiller=this._getInlineFillerNode(N)}_getInlineFillerNode(N){if(!N)return void(this._inlineFiller=null);const M=this.domConverter.viewPositionToDom(N);if(!M||!s.i(C.c)(M.parent))throw new F.a('view-renderer-cannot-find-filler: Cannot find filler node by its position.');return M.parent}_getInlineFillerPosition(){const N=this.selection.getFirstPosition();return N.parent.is('text')?h.a.createBefore(this.selection.getFirstPosition().parent):N}_isSelectionInInlineFiller(){if(1!=this.selection.rangeCount||!this.selection.isCollapsed)return!1;const N=this.selection.getFirstPosition(),M=this.domConverter.viewPositionToDom(N);return M&&this.domConverter.isText(M.parent)&&s.i(C.c)(M.parent)}_removeInlineFiller(){const N=this._inlineFiller;if(!s.i(C.c)(N))throw new F.a('view-renderer-filler-was-lost: The inline filler node was lost.');s.i(C.f)(N)?N.parentNode.removeChild(N):N.data=N.data.substr(C.d),this._inlineFiller=null}_needsInlineFillerAtSelection(){if(1!=this.selection.rangeCount||!this.selection.isCollapsed)return!1;const N=this.selection.getFirstPosition(),M=N.parent,I=N.offset;if(!this.domConverter.getCorrespondingDomElement(M.root))return!1;if(!M.is('element'))return!1;if(I===M.getFillerOffset())return!1;const L=N.nodeBefore,D=N.nodeAfter;return L instanceof f.a||D instanceof f.a?!1:!0}_updateText(N,M){const I=this.domConverter.getCorrespondingDom(N),L=this.domConverter.viewToDom(N,I.ownerDocument),D=I.data;let q=L.data;const z=M.inlineFillerPosition;z&&z.parent==N.parent&&z.offset==N.index&&(q=C.i+q),D!=q&&(I.data=q)}_updateAttrs(N){const M=this.domConverter.getCorrespondingDom(N),I=Array.from(M.attributes).map((D)=>D.name),L=N.getAttributeKeys();for(let D of L)M.setAttribute(D,N.getAttribute(D));for(let D of I)N.hasAttribute(D)||M.removeAttribute(D)}_updateChildren(N,M){function I(U,Z){if(U===Z)return!0;return L.isText(U)&&L.isText(Z)?U.data===Z.data:s.i(C.e)(U,L.blockFiller)&&s.i(C.e)(Z,L.blockFiller)}const L=this.domConverter,D=L.getCorrespondingDom(N);if(D){const q=D.ownerDocument,z=M.inlineFillerPosition,K=D.childNodes,$=Array.from(L.viewChildrenToDom(N,q,{bind:!0}));if(z&&z.parent==N){const U=$[z.offset];this.domConverter.isText(U)?U.data=C.i+U.data:$.splice(z.offset,0,q.createTextNode(C.i))}const H=s.i(P.a)(K,$,I);let W=0;for(let U of 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L=M.getSelection();L.removeAllRanges();const D=new Range;D.selectNodeContents(this._fakeSelectionContainer),L.addRange(D),this.domConverter.bindFakeSelection(this._fakeSelectionContainer,this.selection)}_updateDomSelection(N){const M=N.ownerDocument.defaultView.getSelection(),I=M&&this.domConverter.domSelectionToView(M);if(!(I&&this.selection.isEqual(I))){if(I&&d(I,this.selection)){const q={oldSelection:I,currentSelection:this.selection};return void O.a.warn('renderer-skipped-selection-rendering: The selection was not rendered due to its similarity to the current one.',q)}const L=this.domConverter.viewPositionToDom(this.selection.anchor),D=this.domConverter.viewPositionToDom(this.selection.focus);M.collapse(L.parent,L.offset),M.extend(D.parent,D.offset)}}_removeDomSelection(){for(let N of this.domDocuments){const M=N.getSelection();if(M.rangeCount){const 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w=s(5),C=s(74),T=s(324),P=s(151);r.a=function(E,O){return()=>{const V=new C.a('figcaption');return V.document=E,V.setCustomProperty(S,!0),s.i(T.a)(V,O),s.i(P.c)(V)}},r.d=function(E){return!!E.getCustomProperty(S)},r.c=function(E){for(let O of E.getChildren())if(O instanceof w.a&&'caption'==O.name)return O;return null},r.b=function(E){const O=E.parent;return'figcaption'==E.name&&O&&'figure'==O.name&&O.hasClass('image')?{name:!0}:null};const S=Symbol('imageCaption')},function(o,r,s){'use strict';var d=s(2),u=s(340),f=s(22);class h extends d.a{static get requires(){return[u.a]}static get pluginName(){return'image/imagestyle'}init(){const w=this.editor.config.get('image.styles');for(let T of w)this._createButton(T);const C=this.editor.config.get('image.defaultToolbar');C&&(C.length&&C.push('|'),w.forEach((T)=>C.push(T.name)))}_createButton(w){const C=this.editor,T=C.commands.get(w.name);C.ui.componentFactory.add(w.name,(P)=>{const S=new f.a(P);return S.set({label:w.title,icon:w.icon,tooltip:!0}),S.bind('isEnabled').to(T,'isEnabled'),S.bind('isOn').to(T,'value'),this.listenTo(S,'execute',()=>C.execute(w.name)),S})}}r.a=h},function(o,r,s){'use strict';function f(P,S,E,O){const V=S.input,F=S.output;if(E.test(V,{class:P.className})&&s.i(T.b)(F)){const R=[...F.getAttributeKeys(),'imageStyle'];O.schema.check({name:'image',inside:S.context,attributes:R})&&(E.consume(V,{class:P.className}),F.setAttribute('imageStyle',P.value))}}function h(P,S){for(let E of S)if(E.value===P)return E}function w(P,S,E){return S&&('changeAttribute'==P||'removeAttribute'==P)&&(E.removeClass(S.className),!0)}function C(P,S,E){return S&&('addAttribute'==P||'changeAttribute'==P)&&(E.addClass(S.className),!0)}var T=s(42);r.a=function(P){return(S,E,O,V)=>{const F=S.name.split(':')[0],R=F+':imageStyle';if(O.test(E.item,R)){const 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S=h.batch||C.batch();S.setAttribute(P,'imageStyle',this.style.value)})}}r.a=f},function(o,r,s){'use strict';var d=s(2),u=s(339),f=s(171),h=s(338),w=s(517),C=s.n(w),T=s(518),P=s.n(T);class S extends d.a{static get requires(){return[f.a]}init(){const E=this.editor,O=E.t,V=E.document,F=V.schema,R=E.data,N=E.editing;E.config.define('image.styles',[{name:'imageStyleFull',title:O('Full size image'),icon:C.a,value:null},{name:'imageStyleSide',title:O('Side image'),icon:P.a,value:'side',className:'image-style-side'}]);const M=E.config.get('image.styles');F.allow({name:'image',attributes:'imageStyle',inside:'$root'});const I=s.i(h.a)(M);N.modelToView.on('addAttribute:imageStyle:image',I),R.modelToView.on('addAttribute:imageStyle:image',I),N.modelToView.on('changeAttribute:imageStyle:image',I),R.modelToView.on('changeAttribute:imageStyle:image',I),N.modelToView.on('removeAttribute:imageStyle:image',I),R.modelToView.on('removeAttribute:imageStyle:image',I),R.viewToModel.on('element:figure',s.i(h.b)(M),{priority:'low'});for(let L of M)E.commands.set(L.name,new u.a(E,L))}}r.a=S},function(o,r,s){'use strict';var d=s(2),u=s(22),f=s(343),h=s(364),w=s(178),C=s(173),T=s(344),P=s(172),S=s(516),E=s.n(S),O=s(510),V=s.n(O);class F extends d.a{static get requires(){return[f.a]}static get pluginName(){return'image/imagetextalternative'}init(){this._createButton();const R=this.editor.config.get('image.defaultToolbar');return R&&(R.length&&R.push('|'),R.push('imageTextAlternative')),this._createBalloonPanel().then((N)=>{this.balloonPanel=N,this.form=N.content.get(0)})}_createButton(){const R=this.editor,N=R.commands.get('imageTextAlternative'),M=R.t;R.ui.componentFactory.add('imageTextAlternative',(I)=>{const L=new u.a(I);return L.set({label:M('Change image text alternative'),icon:E.a,tooltip:!0}),L.bind('isEnabled').to(N,'isEnabled'),this.listenTo(L,'execute',()=>this._showBalloonPanel()),L})}_createBalloonPanel(){const R=this.editor,N=new P.a(R),M=new T.a(R.locale);this.listenTo(M,'submit',()=>{R.execute('imageTextAlternative',{newValue:M.lebeledInput.inputView.element.value}),this._hideBalloonPanel()});const I=R.plugins.get(C.a);return I&&this.listenTo(N,'change:isVisible',()=>{N.isVisible?(I.hide(),I.isEnabled=!1):(I.show(),I.isEnabled=!0)}),this.listenTo(M,'cancel',()=>this._hideBalloonPanel()),s.i(h.a)({emitter:N,activator:()=>N.isVisible,callback:()=>this._hideBalloonPanel()}),s.i(w.a)({emitter:N,activator:()=>N.isVisible,contextElement:N.element,callback:()=>this._hideBalloonPanel()}),Promise.all([N.content.add(M),R.ui.view.body.add(N)]).then(()=>N)}_showBalloonPanel(){const R=this.editor,N=R.commands.get('imageTextAlternative');this.form.lebeledInput.value=N.value||'',this.balloonPanel.attach(),this.form.lebeledInput.select()}_hideBalloonPanel(){const R=this.editor;this.balloonPanel.detach(),R.editing.view.focus()}}r.a=F},function(o,r,s){'use strict';var d=s(11),u=s(42);class f extends d.a{constructor(h){super(h),this.set('value',!1),this.listenTo(h.document,'changesDone',()=>{this._updateValue(),this.refreshState()})}_updateValue(){const h=this.editor.document,w=h.selection.getSelectedElement();this.value=s.i(u.b)(w)&&w.hasAttribute('alt')&&w.getAttribute('alt')}_checkEnabled(){const h=this.editor.document.selection.getSelectedElement();return s.i(u.b)(h)}_doExecute(h){const w=this.editor,C=w.document,T=C.selection.getSelectedElement();C.enqueueChanges(()=>{const P=h.batch||C.batch();P.setAttribute(T,'alt',h.newValue)})}}r.a=f},function(o,r,s){'use strict';var d=s(342),u=s(2);class f extends u.a{init(){this.editor.commands.set('imageTextAlternative',new d.a(this.editor))}}r.a=f},function(o,r,s){'use strict';var d=s(9),u=s(22),f=s(6),h=s(181),w=s(180),C=s(179);class T extends d.a{constructor(P){super(P);const S=this.locale.t;this.lebeledInput=this._createLabeledInputView(),this.saveButtonView=this._createButton(S('Save')),this.saveButtonView.type='submit',this.cancelButtonView=this._createButton(S('Cancel'),'cancel'),f.a.extend(this.saveButtonView.template,{attributes:{class:['ck-button-action']}}),this.template=new f.a({tag:'form',attributes:{class:['cke-text-alternative-form']},children:[this.lebeledInput,{tag:'div',attributes:{class:['cke-text-alternative-form__actions']},children:[this.saveButtonView,this.cancelButtonView]}]}),s.i(C.a)({view:this})}_createButton(P,S){const E=new u.a(this.locale);return E.label=P,E.withText=!0,S&&E.delegate('execute').to(this,S),E}_createLabeledInputView(){const P=this.locale.t,S=new h.a(this.locale,w.a);return S.label=P('Text alternative'),S}}r.a=T},function(o,r,s){'use strict';function d(I){return I.parent.getAncestors().find((L)=>L instanceof w.a)}var u=s(2),f=s(318),h=s(347),w=s(175),C=s(178),T=s(22),P=s(182),S=s(348),E=s(520),O=s.n(E),V=s(521),F=s.n(V),R=s(512),N=s.n(R);class M extends u.a{static get requires(){return[h.a]}static get 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D.maxWidth=300,I.ui.focusTracker.add(D.element),this.listenTo(L,'click',()=>{const q=L.selection,z=d(q.getFirstPosition());q.isCollapsed&&z&&(this._attachPanelToElement(),this.listenTo(L,'render',()=>{const K=d(q.getFirstPosition());q.isCollapsed&&z===K?this._attachPanelToElement(z):this._hidePanel()}),this.listenTo(D,'change:isVisible',()=>this.stopListening(L,'render')))}),I.keystrokes.set('Tab',(q,z)=>{D.isVisible&&!this.formView.focusTracker.isFocused&&(this.formView.focus(),z())}),I.keystrokes.set('Esc',(q,z)=>{D.isVisible&&(this._hidePanel(!0),z())}),s.i(C.a)({emitter:D,activator:()=>D.isVisible,contextElement:D.element,callback:()=>this._hidePanel()}),I.ui.view.body.add(D),D}_createForm(){const I=this.editor,L=new S.a(I.locale);return L.urlInputView.bind('value').to(I.commands.get('link'),'value'),this.listenTo(L,'submit',()=>{I.execute('link',L.urlInputView.inputView.element.value),this._hidePanel(!0)}),this.listenTo(L,'unlink',()=>{I.execute('unlink'),this._hidePanel(!0)}),L.keystrokes.set('Esc',(D,q)=>{this._hidePanel(!0),q()}),this.listenTo(L,'cancel',()=>this._hidePanel(!0)),this.balloonPanelView.content.add(L),L}_attachPanelToElement(I){const L=this.editor.editing.view,D=I||d(L.selection.getFirstPosition()),q=D?L.domConverter.getCorrespondingDomElement(D):L.domConverter.viewRangeToDom(L.selection.getFirstRange());this.balloonPanelView.attachTo({target:q,limiter:L.domConverter.getCorrespondingDomElement(L.selection.editableElement)})}_hidePanel(I){this.balloonPanelView.hide(),I&&this.editor.editing.view.focus()}_showPanel(){this._attachPanelToElement(),this.formView.urlInputView.select()}}r.a=M},function(o,r,s){'use strict';var d=s(11),u=s(25),f=s(3),h=s(99),w=s(154),C=s(174);class T extends 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d(C,T,P){const S=T?C[0]:C[C.length-1];if(S.is('listItem'))for(let E=S[T?'previousSibling':'nextSibling'],O=S.getAttribute('indent');E&&E.is('listItem')&&E.getAttribute('indent')>=P;)O>E.getAttribute('indent')&&(O=E.getAttribute('indent')),E.getAttribute('indent')==O&&C[T?'unshift':'push'](E),E=E[T?'previousSibling':'nextSibling']}var u=s(11),f=s(1),h=s(64);class w extends u.a{constructor(C,T){super(C),this.type='bulleted'==T?'bulleted':'numbered',this.set('value',!1),this.listenTo(C.document,'changesDone',()=>{this.refreshValue(),this.refreshState()})}refreshValue(){const C=s.i(h.a)(this.editor.document.selection.getSelectedBlocks());this.value=C&&C.is('listItem')&&C.getAttribute('type')==this.type}_doExecute(C={}){const T=this.editor.document,P=Array.from(T.selection.getSelectedBlocks()),S=!0===this.value;T.enqueueChanges(()=>{const E=C.batch||T.batch();if(S){let 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* @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module module:engine/view/writer\n */\n\nimport Position from './position';\nimport ContainerElement from './containerelement';\nimport AttributeElement from './attributeelement';\nimport EmptyElement from './emptyelement';\nimport UIElement from './uielement';\nimport Text from './text';\nimport Range from './range';\nimport TreeWalker from './treewalker';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\nimport DocumentFragment from './documentfragment';\nimport isIterable from '@ckeditor/ckeditor5-utils/src/isiterable';\n\n/**\n * Contains functions used for composing view tree.\n *\n * @namespace writer\n */\n\nconst writer = {\n\tbreakAttributes,\n\tbreakContainer,\n\tmergeAttributes,\n\tmergeContainers,\n\tinsert,\n\tremove,\n\tclear,\n\tmove,\n\twrap,\n\twrapPosition,\n\tunwrap,\n\trename,\n\tbreakViewRangePerContainer\n};\n\nexport default writer;\n\n/**\n * Breaks attribute nodes at provided position or at boundaries of provided range. It breaks attribute elements inside\n * up to a container element.\n *\n * In following examples `<p>` is a container, `<b>` and `<u>` are attribute nodes:\n *\n *\t\t<p>foo<b><u>bar{}</u></b></p> -> <p>foo<b><u>bar</u></b>[]</p>\n *\t\t<p>foo<b><u>{}bar</u></b></p> -> <p>foo{}<b><u>bar</u></b></p>\n *\t\t<p>foo<b><u>b{}ar</u></b></p> -> <p>foo<b><u>b</u></b>[]<b><u>ar</u></b></p>\n *\t\t<p><b>fo{o</b><u>ba}r</u></p> -> <p><b>fo</b><b>o</b><u>ba</u><u>r</u></b></p>\n *\n * **Note:** {@link module:engine/view/documentfragment~DocumentFragment DocumentFragment} is treated like a container.\n *\n * **Note:** Difference between {@link module:engine/view/writer~writer.breakAttributes breakAttributes} and\n * {@link module:engine/view/writer~writer.breakContainer breakContainer} is that `breakAttributes` breaks all\n * {@link module:engine/view/attributeelement~AttributeElement attribute elements} that are ancestors of given `position`, up to the first\n * encountered {@link module:engine/view/containerelement~ContainerElement container element}. `breakContainer` assumes that given\n * `position`\n * is directly in container element and breaks that container element.\n *\n * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-writer-invalid-range-container`\n * when {@link module:engine/view/range~Range#start start}\n * and {@link module:engine/view/range~Range#end end} positions of a passed range are not placed inside same parent container.\n *\n * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-writer-cannot-break-empty-element`\n * when trying to break attributes\n * inside {@link module:engine/view/emptyelement~EmptyElement EmptyElement}.\n *\n * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-writer-cannot-break-ui-element`\n * when trying to break attributes\n * inside {@link module:engine/view/uielement~UIElement UIElement}.\n *\n * @see module:engine/view/attributeelement~AttributeElement\n * @see module:engine/view/containerelement~ContainerElement\n * @see module:engine/view/writer~writer.breakContainer\n * @function module:engine/view/writer~writer.breakAttributes\n * @param {module:engine/view/position~Position|module:engine/view/range~Range} positionOrRange Position where to break attribute elements.\n * @returns {module:engine/view/position~Position|module:engine/view/range~Range} New position or range, after breaking the attribute\n * elements.\n */\nexport function breakAttributes( positionOrRange ) {\n\tif ( positionOrRange instanceof Position ) {\n\t\treturn _breakAttributes( positionOrRange );\n\t} else {\n\t\treturn _breakAttributesRange( positionOrRange );\n\t}\n}\n\n/**\n * Breaks {@link module:engine/view/containerelement~ContainerElement container view element} into two, at the given position. Position\n * has to be directly inside container element and cannot be in root. Does not break if position is at the beginning\n * or at the end of it's parent element.\n *\n *\t\t<p>foo^bar</p> -> <p>foo</p><p>bar</p>\n *\t\t<div><p>foo</p>^<p>bar</p></div> -> <div><p>foo</p></div><div><p>bar</p></div>\n *\t\t<p>^foobar</p> -> ^<p>foobar</p>\n *\t\t<p>foobar^</p> -> <p>foobar</p>^\n *\n * **Note:** Difference between {@link module:engine/view/writer~writer.breakAttributes breakAttributes} and\n * {@link module:engine/view/writer~writer.breakContainer breakContainer} is that `breakAttributes` breaks all\n * {@link module:engine/view/attributeelement~AttributeElement attribute elements} that are ancestors of given `position`, up to the first\n * encountered {@link module:engine/view/containerelement~ContainerElement container element}. `breakContainer` assumes that given\n * `position`\n * is directly in container element and breaks that container element.\n *\n * @see module:engine/view/attributeelement~AttributeElement\n * @see module:engine/view/containerelement~ContainerElement\n * @see module:engine/view/writer~writer.breakAttributes\n * @function module:engine/view/writer~writer.breakContainer\n * @param {module:engine/view/position~Position} position Position where to break element.\n * @returns {module:engine/view/position~Position} Position between broken elements. If element has not been broken, the returned position\n * is placed either before it or after it.\n */\nexport function breakContainer( position ) {\n\tconst element = position.parent;\n\n\tif ( !( element.is( 'containerElement' ) ) ) {\n\t\t/**\n\t\t * Trying to break an element which is not a container element.\n\t\t *\n\t\t * @error view-writer-break-non-container-element\n\t\t */\n\t\tthrow new CKEditorError( 'view-writer-break-non-container-element: Trying to break an element which is not a container element.' );\n\t}\n\n\tif ( !element.parent ) {\n\t\t/**\n\t\t * Trying to break root element.\n\t\t *\n\t\t * @error view-writer-break-root\n\t\t */\n\t\tthrow new CKEditorError( 'view-writer-break-root: Trying to break root element.' );\n\t}\n\n\tif ( position.isAtStart ) {\n\t\treturn Position.createBefore( element );\n\t} else if ( !position.isAtEnd ) {\n\t\tconst newElement = element.clone( false );\n\n\t\tinsert( Position.createAfter( element ), newElement );\n\n\t\tconst sourceRange = new Range( position, Position.createAt( element, 'end' ) );\n\t\tconst targetPosition = new Position( newElement, 0 );\n\n\t\tmove( sourceRange, targetPosition );\n\t}\n\n\treturn Position.createAfter( element );\n}\n\n/**\n * Merges {@link module:engine/view/attributeelement~AttributeElement attribute elements}. It also merges text nodes if needed.\n * Only {@link module:engine/view/attributeelement~AttributeElement#isSimilar similar} attribute elements can be merged.\n *\n * In following examples `<p>` is a container and `<b>` is an attribute element:\n *\n *\t\t<p>foo[]bar</p> -> <p>foo{}bar</p>\n *\t\t<p><b>foo</b>[]<b>bar</b></p> -> <p><b>foo{}bar</b></p>\n *\t\t<p><b foo=\"bar\">a</b>[]<b foo=\"baz\">b</b></p> -> <p><b foo=\"bar\">a</b>[]<b foo=\"baz\">b</b></p>\n *\n * It will also take care about empty attributes when merging:\n *\n *\t\t<p><b>[]</b></p> -> <p>[]</p>\n *\t\t<p><b>foo</b><i>[]</i><b>bar</b></p> -> <p><b>foo{}bar</b></p>\n *\n * **Note:** Difference between {@link module:engine/view/writer~writer.mergeAttributes mergeAttributes} and\n * {@link module:engine/view/writer~writer.mergeContainers mergeContainers} is that `mergeAttributes` merges two\n * {@link module:engine/view/attributeelement~AttributeElement attribute elements} or {@link module:engine/view/text~Text text nodes}\n * while `mergeContainer` merges two {@link module:engine/view/containerelement~ContainerElement container elements}.\n *\n * @see module:engine/view/attributeelement~AttributeElement\n * @see module:engine/view/containerelement~ContainerElement\n * @see module:engine/view/writer~writer.mergeContainers\n * @function module:engine/view/writer~writer.mergeAttributes\n * @param {module:engine/view/position~Position} position Merge position.\n * @returns {module:engine/view/position~Position} Position after merge.\n */\nexport function mergeAttributes( position ) {\n\tconst positionOffset = position.offset;\n\tconst positionParent = position.parent;\n\n\t// When inside text node - nothing to merge.\n\tif ( positionParent.is( 'text' ) ) {\n\t\treturn position;\n\t}\n\n\t// When inside empty attribute - remove it.\n\tif ( positionParent.is( 'attributeElement' ) && positionParent.childCount === 0 ) {\n\t\tconst parent = positionParent.parent;\n\t\tconst offset = positionParent.index;\n\t\tpositionParent.remove();\n\n\t\treturn mergeAttributes( new Position( parent, offset ) );\n\t}\n\n\tconst nodeBefore = positionParent.getChild( positionOffset - 1 );\n\tconst nodeAfter = positionParent.getChild( positionOffset );\n\n\t// Position should be placed between two nodes.\n\tif ( !nodeBefore || !nodeAfter ) {\n\t\treturn position;\n\t}\n\n\t// When position is between two text nodes.\n\tif ( nodeBefore.is( 'text' ) && nodeAfter.is( 'text' ) ) {\n\t\treturn mergeTextNodes( nodeBefore, nodeAfter );\n\t}\n\t// When selection is between two same attribute elements.\n\telse if ( nodeBefore.is( 'attributeElement' ) && nodeAfter.is( 'attributeElement' ) && nodeBefore.isSimilar( nodeAfter ) ) {\n\t\t// Move all children nodes from node placed after selection and remove that node.\n\t\tconst count = nodeBefore.childCount;\n\t\tnodeBefore.appendChildren( nodeAfter.getChildren() );\n\t\tnodeAfter.remove();\n\n\t\t// New position is located inside the first node, before new nodes.\n\t\t// Call this method recursively to merge again if needed.\n\t\treturn mergeAttributes( new Position( nodeBefore, count ) );\n\t}\n\n\treturn position;\n}\n\n/**\n * Merges two {@link module:engine/view/containerelement~ContainerElement container elements} that are before and after given position.\n * Precisely, the element after the position is removed and it's contents are moved to element before the position.\n *\n *\t\t<p>foo</p>^<p>bar</p> -> <p>foo^bar</p>\n *\t\t<div>foo</div>^<p>bar</p> -> <div>foo^bar</div>\n *\n * **Note:** Difference between {@link module:engine/view/writer~writer.mergeAttributes mergeAttributes} and\n * {@link module:engine/view/writer~writer.mergeContainers mergeContainers} is that `mergeAttributes` merges two\n * {@link module:engine/view/attributeelement~AttributeElement attribute elements} or {@link module:engine/view/text~Text text nodes}\n * while `mergeContainer` merges two {@link module:engine/view/containerelement~ContainerElement container elements}.\n *\n * @see module:engine/view/attributeelement~AttributeElement\n * @see module:engine/view/containerelement~ContainerElement\n * @see module:engine/view/writer~writer.mergeAttributes\n * @function module:engine/view/writer~writer.mergeContainers\n * @param {module:engine/view/position~Position} position Merge position.\n * @returns {module:engine/view/position~Position} Position after merge.\n */\nexport function mergeContainers( position ) {\n\tconst prev = position.nodeBefore;\n\tconst next = position.nodeAfter;\n\n\tif ( !prev || !next || !prev.is( 'containerElement' ) || !next.is( 'containerElement' ) ) {\n\t\t/**\n\t\t * Element before and after given position cannot be merged.\n\t\t *\n\t\t * @error view-writer-merge-containers-invalid-position\n\t\t */\n\t\tthrow new CKEditorError( 'view-writer-merge-containers-invalid-position: ' +\n\t\t\t'Element before and after given position cannot be merged.' );\n\t}\n\n\tconst lastChild = prev.getChild( prev.childCount - 1 );\n\tconst newPosition = lastChild instanceof Text ? Position.createAt( lastChild, 'end' ) : Position.createAt( prev, 'end' );\n\n\tmove( Range.createIn( next ), Position.createAt( prev, 'end' ) );\n\tremove( Range.createOn( next ) );\n\n\treturn newPosition;\n}\n\n/**\n * Breaks given `range` on a set of {@link module:engine/view/range~Range ranges}, that each are contained within a\n * {@link module:engine/view/containerelement~ContainerElement container element}. After `range` is broken, it's \"pieces\" can\n * be used by other {@link module:engine/view/writer~writer} methods (which expect that passed ranges are contained within\n * one container element).\n *\n * @function module:engine/view/writer~writer.breakViewRangePerContainer\n * @param {module:engine/view/range~Range} range Range to break.\n * @returns {Array.<module:engine/view/range~Range>} Ranges that combine into passed `viewRange`.\n */\nexport function breakViewRangePerContainer( range ) {\n\tconst ranges = [];\n\tconst walker = new TreeWalker( { boundaries: range } );\n\n\tlet start = range.start;\n\n\tfor ( let value of walker ) {\n\t\tif ( value.item.is( 'containerElement' ) ) {\n\t\t\tif ( !start.isEqual( value.previousPosition ) ) {\n\t\t\t\tranges.push( new Range( start, value.previousPosition ) );\n\t\t\t}\n\n\t\t\tstart = value.nextPosition;\n\t\t}\n\t}\n\n\tranges.push( new Range( start, range.end ) );\n\n\treturn ranges;\n}\n\n/**\n * Insert node or nodes at specified position. Takes care about breaking attributes before insertion\n * and merging them afterwards.\n *\n * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-writer-insert-invalid-node` when nodes to insert\n * contains instances that are not {@link module:engine/view/text~Text Texts},\n * {@link module:engine/view/attributeelement~AttributeElement AttributeElements},\n * {@link module:engine/view/containerelement~ContainerElement ContainerElements},\n * {@link module:engine/view/emptyelement~EmptyElement EmptyElements} or\n * {@link module:engine/view/uielement~UIElement UIElements}.\n *\n * @function insert\n * @param {module:engine/view/position~Position} position Insertion position.\n * @param {module:engine/view/text~Text|module:engine/view/attributeelement~AttributeElement|\n * module:engine/view/containerelement~ContainerElement|module:engine/view/emptyelement~EmptyElement|\n * module:engine/view/uielement~UIElement|Iterable.<module:engine/view/text~Text|\n * module:engine/view/attributeelement~AttributeElement|module:engine/view/containerelement~ContainerElement|\n * module:engine/view/emptyelement~EmptyElement|module:engine/view/uielement~UIElement>} nodes Node or nodes to insert.\n * @returns {module:engine/view/range~Range} Range around inserted nodes.\n */\nexport function insert( position, nodes ) {\n\tnodes = isIterable( nodes ) ? [ ...nodes ] : [ nodes ];\n\n\t// Check if nodes to insert are instances of AttributeElements, ContainerElements, EmptyElements, UIElements or Text.\n\tvalidateNodesToInsert( nodes );\n\n\tconst container = getParentContainer( position );\n\n\tif ( !container ) {\n\t\t/**\n\t\t * Position's parent container cannot be found.\n\t\t *\n\t\t * @error view-writer-invalid-position-container\n\t\t */\n\t\tthrow new CKEditorError( 'view-writer-invalid-position-container' );\n\t}\n\n\tconst insertionPosition = _breakAttributes( position, true );\n\n\tconst length = container.insertChildren( insertionPosition.offset, nodes );\n\tconst endPosition = insertionPosition.getShiftedBy( length );\n\tconst start = mergeAttributes( insertionPosition );\n\n\t// When no nodes were inserted - return collapsed range.\n\tif ( length === 0 ) {\n\t\treturn new Range( start, start );\n\t} else {\n\t\t// If start position was merged - move end position.\n\t\tif ( !start.isEqual( insertionPosition ) ) {\n\t\t\tendPosition.offset--;\n\t\t}\n\n\t\tconst end = mergeAttributes( endPosition );\n\n\t\treturn new Range( start, end );\n\t}\n}\n\n/**\n * Removes provided range from the container.\n *\n * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-writer-invalid-range-container` when\n * {@link module:engine/view/range~Range#start start} and {@link module:engine/view/range~Range#end end} positions are not placed inside\n * same parent container.\n *\n * @function module:engine/view/writer~writer.remove\n * @param {module:engine/view/range~Range} range Range to remove from container. After removing, it will be updated\n * to a collapsed range showing the new position.\n * @returns {module:engine/view/documentfragment~DocumentFragment} Document fragment containing removed nodes.\n */\nexport function remove( range ) {\n\tvalidateRangeContainer( range );\n\n\t// If range is collapsed - nothing to remove.\n\tif ( range.isCollapsed ) {\n\t\treturn new DocumentFragment();\n\t}\n\n\t// Break attributes at range start and end.\n\tconst { start: breakStart, end: breakEnd } = _breakAttributesRange( range, true );\n\tconst parentContainer = breakStart.parent;\n\n\tconst count = breakEnd.offset - breakStart.offset;\n\n\t// Remove nodes in range.\n\tconst removed = parentContainer.removeChildren( breakStart.offset, count );\n\n\t// Merge after removing.\n\tconst mergePosition = mergeAttributes( breakStart );\n\trange.start = mergePosition;\n\trange.end = Position.createFromPosition( mergePosition );\n\n\t// Return removed nodes.\n\treturn new DocumentFragment( removed );\n}\n\n/**\n * Removes matching elements from given range.\n *\n * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-writer-invalid-range-container` when\n * {@link module:engine/view/range~Range#start start} and {@link module:engine/view/range~Range#end end} positions are not placed inside\n * same parent container.\n *\n * @function module:engine/view/writer~writer.clear\n * @param {module:engine/view/range~Range} range Range to clear.\n * @param {module:engine/view/element~Element} element Element to remove.\n */\nexport function clear( range, element ) {\n\tvalidateRangeContainer( range );\n\n\t// Create walker on given range.\n\t// We walk backward because when we remove element during walk it modifies range end position.\n\tconst walker = range.getWalker( {\n\t\tdirection: 'backward',\n\t\tignoreElementEnd: true\n\t} );\n\n\t// Let's walk.\n\tfor ( const current of walker ) {\n\t\tconst item = current.item;\n\t\tlet rangeToRemove;\n\n\t\t// When current item matches to the given element.\n\t\tif ( item.is( 'element' ) && element.isSimilar( item ) ) {\n\t\t\t// Create range on this element.\n\t\t\trangeToRemove = Range.createOn( item );\n\t\t// When range starts inside Text or TextProxy element.\n\t\t} else if ( !current.nextPosition.isAfter( range.start ) && ( item.is( 'text' ) || item.is( 'textProxy' ) ) ) {\n\t\t\t// We need to check if parent of this text matches to given element.\n\t\t\tconst parentElement = item.getAncestors().find( ( ancestor ) => {\n\t\t\t\treturn ancestor.is( 'element' ) && element.isSimilar( ancestor );\n\t\t\t} );\n\n\t\t\t// If it is then create range inside this element.\n\t\t\tif ( parentElement ) {\n\t\t\t\trangeToRemove = Range.createIn( parentElement );\n\t\t\t}\n\t\t}\n\n\t\t// If we have found element to remove.\n\t\tif ( rangeToRemove ) {\n\t\t\t// We need to check if element range stick out of the given range and truncate if it is.\n\t\t\tif ( rangeToRemove.end.isAfter( range.end ) ) {\n\t\t\t\trangeToRemove.end = range.end;\n\t\t\t}\n\n\t\t\tif ( rangeToRemove.start.isBefore( range.start ) ) {\n\t\t\t\trangeToRemove.start = range.start;\n\t\t\t}\n\n\t\t\t// At the end we remove range with found element.\n\t\t\tremove( rangeToRemove );\n\t\t}\n\t}\n}\n\n/**\n * Moves nodes from provided range to target position.\n *\n * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-writer-invalid-range-container` when\n * {@link module:engine/view/range~Range#start start} and {@link module:engine/view/range~Range#end end} positions are not placed inside\n * same parent container.\n *\n * @function module:engine/view/writer~writer.move\n * @param {module:engine/view/range~Range} sourceRange Range containing nodes to move.\n * @param {module:engine/view/position~Position} targetPosition Position to insert.\n * @returns {module:engine/view/range~Range} Range in target container. Inserted nodes are placed between\n * {@link module:engine/view/range~Range#start start} and {@link module:engine/view/range~Range#end end} positions.\n */\nexport function move( sourceRange, targetPosition ) {\n\tlet nodes;\n\n\tif ( targetPosition.isAfter( sourceRange.end ) ) {\n\t\ttargetPosition = _breakAttributes( targetPosition, true );\n\n\t\tconst parent = targetPosition.parent;\n\t\tconst countBefore = parent.childCount;\n\n\t\tsourceRange = _breakAttributesRange( sourceRange, true );\n\n\t\tnodes = remove( sourceRange );\n\n\t\ttargetPosition.offset += ( parent.childCount - countBefore );\n\t} else {\n\t\tnodes = remove( sourceRange );\n\t}\n\n\treturn insert( targetPosition, nodes );\n}\n\n/**\n * Wraps elements within range with provided {@link module:engine/view/attributeelement~AttributeElement AttributeElement}.\n *\n * Throws {@link module:utils/ckeditorerror~CKEditorError} `view-writer-invalid-range-container`\n * when {@link module:engine/view/range~Range#start}\n * and {@link module:engine/view/range~Range#end} positions are not placed inside same parent container.\n * Throws {@link module:utils/ckeditorerror~CKEditorError} `view-writer-wrap-invalid-attribute` when passed attribute element is not\n * an instance of {module:engine/view/attributeelement~AttributeElement AttributeElement}.\n *\n * @function module:engine/view/writer~writer.wrap\n * @param {module:engine/view/range~Range} range Range to wrap.\n * @param {module:engine/view/attributeelement~AttributeElement} attribute Attribute element to use as wrapper.\n */\nexport function wrap( range, attribute ) {\n\tif ( !( attribute instanceof AttributeElement ) ) {\n\t\t/**\n\t\t * Attribute element need to be instance of attribute element.\n\t\t *\n\t\t * @error view-writer-wrap-invalid-attribute\n\t\t */\n\t\tthrow new CKEditorError( 'view-writer-wrap-invalid-attribute' );\n\t}\n\n\tvalidateRangeContainer( range );\n\n\t// If range is collapsed - nothing to wrap.\n\tif ( range.isCollapsed ) {\n\t\treturn range;\n\t}\n\n\t// Range around one element.\n\tif ( range.end.isEqual( range.start.getShiftedBy( 1 ) ) ) {\n\t\tconst node = range.start.nodeAfter;\n\n\t\tif ( node instanceof AttributeElement && wrapAttributeElement( attribute, node ) ) {\n\t\t\treturn range;\n\t\t}\n\t}\n\n\t// Range is inside single attribute and spans on all children.\n\tif ( rangeSpansOnAllChildren( range ) && wrapAttributeElement( attribute, range.start.parent ) ) {\n\t\tconst parent = range.start.parent.parent;\n\t\tconst index = range.start.parent.index;\n\n\t\treturn Range.createFromParentsAndOffsets( parent, index, parent, index + 1 ) ;\n\t}\n\n\t// Break attributes at range start and end.\n\tconst { start: breakStart, end: breakEnd } = _breakAttributesRange( range, true );\n\tconst parentContainer = breakStart.parent;\n\n\t// Unwrap children located between break points.\n\tconst unwrappedRange = unwrapChildren( parentContainer, breakStart.offset, breakEnd.offset, attribute );\n\n\t// Wrap all children with attribute.\n\tconst newRange = wrapChildren( parentContainer, unwrappedRange.start.offset, unwrappedRange.end.offset, attribute );\n\n\t// Merge attributes at the both ends and return a new range.\n\tconst start = mergeAttributes( newRange.start );\n\n\t// If start position was merged - move end position back.\n\tif ( !start.isEqual( newRange.start ) ) {\n\t\tnewRange.end.offset--;\n\t}\n\tconst end = mergeAttributes( newRange.end );\n\n\treturn new Range( start, end );\n}\n\n/**\n * Wraps position with provided attribute. Returns new position after wrapping. This method will also merge newly\n * added attribute with its siblings whenever possible.\n *\n * Throws {@link module:utils/ckeditorerror~CKEditorError} `view-writer-wrap-invalid-attribute` when passed attribute element is not\n * an instance of {module:engine/view/attributeelement~AttributeElement AttributeElement}.\n *\n * @param {module:engine/view/position~Position} position\n * @param {module:engine/view/attributeelement~AttributeElement} attribute\n * @returns {module:engine/view/position~Position} New position after wrapping.\n */\nexport function wrapPosition( position, attribute ) {\n\tif ( !( attribute instanceof AttributeElement ) ) {\n\t\t/**\n\t\t * Attribute element need to be instance of attribute element.\n\t\t *\n\t\t * @error view-writer-wrap-invalid-attribute\n\t\t */\n\t\tthrow new CKEditorError( 'view-writer-wrap-invalid-attribute' );\n\t}\n\n\t// Return same position when trying to wrap with attribute similar to position parent.\n\tif ( attribute.isSimilar( position.parent ) ) {\n\t\treturn movePositionToTextNode( Position.createFromPosition( position ) );\n\t}\n\n\t// When position is inside text node - break it and place new position between two text nodes.\n\tif ( position.parent.is( 'text' ) ) {\n\t\tposition = breakTextNode( position );\n\t}\n\n\t// Create fake element that will represent position, and will not be merged with other attributes.\n\tconst fakePosition = new AttributeElement();\n\tfakePosition.priority = Number.POSITIVE_INFINITY;\n\tfakePosition.isSimilar = () => false;\n\n\t// Insert fake element in position location.\n\tposition.parent.insertChildren( position.offset, fakePosition );\n\n\t// Range around inserted fake attribute element.\n\tconst wrapRange = new Range( position, position.getShiftedBy( 1 ) );\n\n\t// Wrap fake element with attribute (it will also merge if possible).\n\twrap( wrapRange, attribute );\n\n\t// Remove fake element and place new position there.\n\tconst newPosition = new Position( fakePosition.parent, fakePosition.index );\n\tfakePosition.remove();\n\n\t// If position is placed between text nodes - merge them and return position inside.\n\tconst nodeBefore = newPosition.nodeBefore;\n\tconst nodeAfter = newPosition.nodeAfter;\n\n\tif ( nodeBefore instanceof Text && nodeAfter instanceof Text ) {\n\t\treturn mergeTextNodes( nodeBefore, nodeAfter );\n\t}\n\n\t// If position is next to text node - move position inside.\n\treturn movePositionToTextNode( newPosition );\n}\n\n/**\n * Unwraps nodes within provided range from attribute element.\n *\n * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-writer-invalid-range-container` when\n * {@link module:engine/view/range~Range#start start} and {@link module:engine/view/range~Range#end end} positions are not placed inside\n * same parent container.\n *\n * @param {module:engine/view/range~Range} range\n * @param {module:engine/view/attributeelement~AttributeElement} element\n */\nexport function unwrap( range, attribute ) {\n\tif ( !( attribute instanceof AttributeElement ) ) {\n\t\t/**\n\t\t * Attribute element need to be instance of attribute element.\n\t\t *\n\t\t * @error view-writer-unwrap-invalid-attribute\n\t\t */\n\t\tthrow new CKEditorError( 'view-writer-unwrap-invalid-attribute' );\n\t}\n\n\tvalidateRangeContainer( range );\n\n\t// If range is collapsed - nothing to unwrap.\n\tif ( range.isCollapsed ) {\n\t\treturn range;\n\t}\n\n\t// Range around one element - check if AttributeElement can be unwrapped partially when it's not similar.\n\t// For example:\n\t// <b class=\"foo bar\" title=\"baz\"></b> unwrap with:\t<b class=\"foo\"></p> result: <b class\"bar\" title=\"baz\"></b>\n\tif ( range.end.isEqual( range.start.getShiftedBy( 1 ) ) ) {\n\t\tconst node = range.start.nodeAfter;\n\n\t\t// Unwrap single attribute element.\n\t\tif ( !attribute.isSimilar( node ) && node instanceof AttributeElement && unwrapAttributeElement( attribute, node ) ) {\n\t\t\treturn range;\n\t\t}\n\t}\n\n\t// Break attributes at range start and end.\n\tconst { start: breakStart, end: breakEnd } = _breakAttributesRange( range, true );\n\tconst parentContainer = breakStart.parent;\n\n\t// Unwrap children located between break points.\n\tconst newRange = unwrapChildren( parentContainer, breakStart.offset, breakEnd.offset, attribute );\n\n\t// Merge attributes at the both ends and return a new range.\n\tconst start = mergeAttributes( newRange.start );\n\n\t// If start position was merged - move end position back.\n\tif ( !start.isEqual( newRange.start ) ) {\n\t\tnewRange.end.offset--;\n\t}\n\tconst end = mergeAttributes( newRange.end );\n\n\treturn new Range( start, end );\n}\n\n/**\n * Renames element by creating a copy of renamed element but with changed name and then moving contents of the\n * old element to the new one. Keep in mind that this will invalidate all {@link module:engine/view/position~Position positions} which\n * has renamed element as {@link module:engine/view/position~Position#parent a parent}.\n *\n * New element has to be created because `Element#tagName` property in DOM is readonly.\n *\n * Since this function creates a new element and removes the given one, the new element is returned to keep reference.\n *\n * @param {module:engine/view/containerelement~ContainerElement} viewElement Element to be renamed.\n * @param {String} newName New name for element.\n */\nexport function rename( viewElement, newName ) {\n\tconst newElement = new ContainerElement( newName, viewElement.getAttributes() );\n\n\tinsert( Position.createAfter( viewElement ), newElement );\n\tmove( Range.createIn( viewElement ), Position.createAt( newElement ) );\n\tremove( Range.createOn( viewElement ) );\n\n\treturn newElement;\n}\n\n// Returns first parent container of specified {@link module:engine/view/position~Position Position}.\n// Position's parent node is checked as first, then next parents are checked.\n// Note that {@link module:engine/view/documentfragment~DocumentFragment DocumentFragment} is treated like a container.\n//\n// @param {module:engine/view/position~Position} position Position used as a start point to locate parent container.\n// @returns {module:engine/view/containerelement~ContainerElement|module:engine/view/documentfragment~DocumentFragment|undefined}\n// Parent container element or `undefined` if container is not found.\nfunction getParentContainer( position ) {\n\tlet parent = position.parent;\n\n\twhile ( !isContainerOrFragment( parent ) ) {\n\t\tif ( !parent ) {\n\t\t\treturn undefined;\n\t\t}\n\t\tparent = parent.parent;\n\t}\n\n\treturn parent;\n}\n\n// Function used by both public breakAttributes (without splitting text nodes) and by other methods (with\n// splitting text nodes).\n//\n// @param {module:engine/view/range~Range} range Range which `start` and `end` positions will be used to break attributes.\n// @param {Boolean} [forceSplitText = false] If set to `true`, will break text nodes even if they are directly in\n// container element. This behavior will result in incorrect view state, but is needed by other view writing methods\n// which then fixes view state. Defaults to `false`.\n// @returns {module:engine/view/range~Range} New range with located at break positions.\nfunction _breakAttributesRange( range, forceSplitText = false ) {\n\tconst rangeStart = range.start;\n\tconst rangeEnd = range.end;\n\n\tvalidateRangeContainer( range );\n\n\t// Break at the collapsed position. Return new collapsed range.\n\tif ( range.isCollapsed ) {\n\t\tconst position = _breakAttributes( range.start, forceSplitText );\n\n\t\treturn new Range( position, position );\n\t}\n\n\tconst breakEnd = _breakAttributes( rangeEnd, forceSplitText );\n\tconst count = breakEnd.parent.childCount;\n\tconst breakStart = _breakAttributes( rangeStart, forceSplitText );\n\n\t// Calculate new break end offset.\n\tbreakEnd.offset += breakEnd.parent.childCount - count;\n\n\treturn new Range( breakStart, breakEnd );\n}\n\n// Function used by public breakAttributes (without splitting text nodes) and by other methods (with\n// splitting text nodes).\n//\n// Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-writer-cannot-break-empty-element` when break position\n// is placed inside {@link module:engine/view/emptyelement~EmptyElement EmptyElement}.\n//\n// Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-writer-cannot-break-ui-element` when break position\n// is placed inside {@link module:engine/view/uielement~UIElement UIElement}.\n//\n// @param {module:engine/view/position~Position} position Position where to break attributes.\n// @param {Boolean} [forceSplitText = false] If set to `true`, will break text nodes even if they are directly in\n// container element. This behavior will result in incorrect view state, but is needed by other view writing methods\n// which then fixes view state. Defaults to `false`.\n// @returns {module:engine/view/position~Position} New position after breaking the attributes.\nfunction _breakAttributes( position, forceSplitText = false ) {\n\tconst positionOffset = position.offset;\n\tconst positionParent = position.parent;\n\n\t// If position is placed inside EmptyElement - throw an exception as we cannot break inside.\n\tif ( position.parent.is( 'emptyElement' ) ) {\n\t\t/**\n\t\t * Cannot break inside EmptyElement instance.\n\t\t *\n\t\t * @error view-writer-cannot-break-empty-element\n\t\t */\n\t\tthrow new CKEditorError( 'view-writer-cannot-break-empty-element' );\n\t}\n\n\t// If position is placed inside UIElement - throw an exception as we cannot break inside.\n\tif ( position.parent.is( 'uiElement' ) ) {\n\t\t/**\n\t\t * Cannot break inside UIElement instance.\n\t\t *\n\t\t * @error view-writer-cannot-break-ui-element\n\t\t */\n\t\tthrow new CKEditorError( 'view-writer-cannot-break-ui-element' );\n\t}\n\n\t// There are no attributes to break and text nodes breaking is not forced.\n\tif ( !forceSplitText && positionParent.is( 'text' ) && isContainerOrFragment( positionParent.parent ) ) {\n\t\treturn Position.createFromPosition( position );\n\t}\n\n\t// Position's parent is container, so no attributes to break.\n\tif ( isContainerOrFragment( positionParent ) ) {\n\t\treturn Position.createFromPosition( position );\n\t}\n\n\t// Break text and start again in new position.\n\tif ( positionParent.is( 'text' ) ) {\n\t\treturn _breakAttributes( breakTextNode( position ), forceSplitText );\n\t}\n\n\tconst length = positionParent.childCount;\n\n\t// <p>foo<b><u>bar{}</u></b></p>\n\t// <p>foo<b><u>bar</u>[]</b></p>\n\t// <p>foo<b><u>bar</u></b>[]</p>\n\tif ( positionOffset == length ) {\n\t\tconst newPosition = new Position( positionParent.parent, positionParent.index + 1 );\n\n\t\treturn _breakAttributes( newPosition, forceSplitText );\n\t} else\n\t// <p>foo<b><u>{}bar</u></b></p>\n\t// <p>foo<b>[]<u>bar</u></b></p>\n\t// <p>foo{}<b><u>bar</u></b></p>\n\tif ( positionOffset === 0 ) {\n\t\tconst newPosition = new Position( positionParent.parent, positionParent.index );\n\n\t\treturn _breakAttributes( newPosition, forceSplitText );\n\t}\n\t// <p>foo<b><u>b{}ar</u></b></p>\n\t// <p>foo<b><u>b[]ar</u></b></p>\n\t// <p>foo<b><u>b</u>[]<u>ar</u></b></p>\n\t// <p>foo<b><u>b</u></b>[]<b><u>ar</u></b></p>\n\telse {\n\t\tconst offsetAfter = positionParent.index + 1;\n\n\t\t// Break element.\n\t\tconst clonedNode = positionParent.clone();\n\n\t\t// Insert cloned node to position's parent node.\n\t\tpositionParent.parent.insertChildren( offsetAfter, clonedNode );\n\n\t\t// Get nodes to move.\n\t\tconst count = positionParent.childCount - positionOffset;\n\t\tconst nodesToMove = positionParent.removeChildren( positionOffset, count );\n\n\t\t// Move nodes to cloned node.\n\t\tclonedNode.appendChildren( nodesToMove );\n\n\t\t// Create new position to work on.\n\t\tconst newPosition = new Position( positionParent.parent, offsetAfter );\n\n\t\treturn _breakAttributes( newPosition, forceSplitText );\n\t}\n}\n\n// Unwraps children from provided `attribute`. Only children contained in `parent` element between\n// `startOffset` and `endOffset` will be unwrapped.\n//\n// @param {module:engine/view/element~Element} parent\n// @param {Number} startOffset\n// @param {Number} endOffset\n// @param {module:engine/view/element~Element} attribute\nfunction unwrapChildren( parent, startOffset, endOffset, attribute ) {\n\tlet i = startOffset;\n\tconst unwrapPositions = [];\n\n\t// Iterate over each element between provided offsets inside parent.\n\twhile ( i < endOffset ) {\n\t\tconst child = parent.getChild( i );\n\n\t\t// If attributes are the similar, then unwrap.\n\t\tif (  child.isSimilar( attribute ) ) {\n\t\t\tconst unwrapped = child.getChildren();\n\t\t\tconst count = child.childCount;\n\n\t\t\t// Replace wrapper element with its children\n\t\t\tchild.remove();\n\t\t\tparent.insertChildren( i, unwrapped );\n\n\t\t\t// Save start and end position of moved items.\n\t\t\tunwrapPositions.push(\n\t\t\t\tnew Position( parent, i ),\n\t\t\t\tnew Position( parent, i + count )\n\t\t\t);\n\n\t\t\t// Skip elements that were unwrapped. Assuming that there won't be another element to unwrap in child\n\t\t\t// elements.\n\t\t\ti += count;\n\t\t\tendOffset += count - 1;\n\t\t} else {\n\t\t\t// If other nested attribute is found start unwrapping there.\n\t\t\tif ( child.is( 'attributeElement' ) ) {\n\t\t\t\tunwrapChildren( child, 0, child.childCount, attribute );\n\t\t\t}\n\n\t\t\ti++;\n\t\t}\n\t}\n\n\t// Merge at each unwrap.\n\tlet offsetChange = 0;\n\n\tfor ( let position of unwrapPositions ) {\n\t\tposition.offset -= offsetChange;\n\n\t\t// Do not merge with elements outside selected children.\n\t\tif ( position.offset == startOffset || position.offset == endOffset ) {\n\t\t\tcontinue;\n\t\t}\n\n\t\tconst newPosition = mergeAttributes( position );\n\n\t\t// If nodes were merged - other merge offsets will change.\n\t\tif ( !newPosition.isEqual( position ) ) {\n\t\t\toffsetChange++;\n\t\t\tendOffset--;\n\t\t}\n\t}\n\n\treturn Range.createFromParentsAndOffsets( parent, startOffset, parent, endOffset );\n}\n\n// Wraps children with provided `attribute`. Only children contained in `parent` element between\n// `startOffset` and `endOffset` will be wrapped.\n//\n// @param {module:engine/view/element~Element} parent\n// @param {Number} startOffset\n// @param {Number} endOffset\n// @param {module:engine/view/element~Element} attribute\nfunction wrapChildren( parent, startOffset, endOffset, attribute ) {\n\tlet i = startOffset;\n\tconst wrapPositions = [];\n\n\twhile ( i < endOffset ) {\n\t\tconst child = parent.getChild( i );\n\t\tconst isText = child.is( 'text' );\n\t\tconst isAttribute = child.is( 'attributeElement' );\n\t\tconst isEmpty = child.is( 'emptyElement' );\n\t\tconst isUI = child.is( 'uiElement' );\n\n\t\t// Wrap text, empty elements, ui elements or attributes with higher or equal priority.\n\t\tif ( isText || isEmpty || isUI || ( isAttribute && attribute.priority <= child.priority ) ) {\n\t\t\t// Clone attribute.\n\t\t\tconst newAttribute = attribute.clone();\n\n\t\t\t// Wrap current node with new attribute;\n\t\t\tchild.remove();\n\t\t\tnewAttribute.appendChildren( child );\n\t\t\tparent.insertChildren( i, newAttribute );\n\n\t\t\twrapPositions.push(\tnew Position( parent, i ) );\n\t\t}\n\t\t// If other nested attribute is found start wrapping there.\n\t\telse if ( isAttribute ) {\n\t\t\twrapChildren( child, 0, child.childCount, attribute );\n\t\t}\n\n\t\ti++;\n\t}\n\n\t// Merge at each wrap.\n\tlet offsetChange = 0;\n\n\tfor ( let position of wrapPositions ) {\n\t\tposition.offset -= offsetChange;\n\n\t\t// Do not merge with elements outside selected children.\n\t\tif ( position.offset == startOffset ) {\n\t\t\tcontinue;\n\t\t}\n\n\t\tconst newPosition = mergeAttributes( position );\n\n\t\t// If nodes were merged - other merge offsets will change.\n\t\tif ( !newPosition.isEqual( position ) ) {\n\t\t\toffsetChange++;\n\t\t\tendOffset--;\n\t\t}\n\t}\n\n\treturn Range.createFromParentsAndOffsets( parent, startOffset, parent, endOffset );\n}\n\n// Returns new position that is moved to near text node. Returns same position if there is no text node before of after\n// specified position.\n//\n//\t\t<p>foo[]</p>  ->  <p>foo{}</p>\n//\t\t<p>[]foo</p>  ->  <p>{}foo</p>\n//\n// @param {module:engine/view/position~Position} position\n// @returns {module:engine/view/position~Position} Position located inside text node or same position if there is no text nodes\n// before or after position location.\nfunction movePositionToTextNode( position ) {\n\tconst nodeBefore = position.nodeBefore;\n\n\tif ( nodeBefore && nodeBefore.is( 'text' ) ) {\n\t\treturn new Position( nodeBefore, nodeBefore.data.length );\n\t}\n\n\tconst nodeAfter = position.nodeAfter;\n\n\tif ( nodeAfter && nodeAfter.is( 'text' ) ) {\n\t\treturn new Position( nodeAfter, 0 );\n\t}\n\n\treturn position;\n}\n\n// Breaks text node into two text nodes when possible.\n//\n//\t\t<p>foo{}bar</p> -> <p>foo[]bar</p>\n//\t\t<p>{}foobar</p> -> <p>[]foobar</p>\n//\t\t<p>foobar{}</p> -> <p>foobar[]</p>\n//\n// @param {module:engine/view/position~Position} position Position that need to be placed inside text node.\n// @returns {module:engine/view/position~Position} New position after breaking text node.\nfunction breakTextNode( position ) {\n\tif ( position.offset == position.parent.data.length ) {\n\t\treturn new Position( position.parent.parent, position.parent.index + 1 );\n\t}\n\n\tif ( position.offset === 0 ) {\n\t\treturn new Position( position.parent.parent, position.parent.index );\n\t}\n\n\t// Get part of the text that need to be moved.\n\tconst textToMove = position.parent.data.slice( position.offset );\n\n\t// Leave rest of the text in position's parent.\n\tposition.parent.data = position.parent.data.slice( 0, position.offset );\n\n\t// Insert new text node after position's parent text node.\n\tposition.parent.parent.insertChildren( position.parent.index + 1, new Text( textToMove ) );\n\n\t// Return new position between two newly created text nodes.\n\treturn new Position( position.parent.parent, position.parent.index + 1 );\n}\n\n// Merges two text nodes into first node. Removes second node and returns merge position.\n//\n// @param {module:engine/view/text~Text} t1 First text node to merge. Data from second text node will be moved at the end of\n// this text node.\n// @param {module:engine/view/text~Text} t2 Second text node to merge. This node will be removed after merging.\n// @returns {module:engine/view/position~Position} Position after merging text nodes.\nfunction mergeTextNodes( t1, t2 ) {\n\t// Merge text data into first text node and remove second one.\n\tconst nodeBeforeLength = t1.data.length;\n\tt1.data += t2.data;\n\tt2.remove();\n\n\treturn new Position( t1, nodeBeforeLength );\n}\n\n// Wraps one {@link module:engine/view/attributeelement~AttributeElement AttributeElement} into another by merging them if possible.\n// Two AttributeElements can be merged when there is no attribute or style conflicts between them.\n// When merging is possible - all attributes, styles and classes are moved from wrapper element to element being\n// wrapped.\n//\n// @param {module:engine/view/attributeelement~AttributeElement} wrapper Wrapper AttributeElement.\n// @param {module:engine/view/attributeelement~AttributeElement} toWrap AttributeElement to wrap using wrapper element.\n// @returns {Boolean} Returns `true` if elements are merged.\nfunction wrapAttributeElement( wrapper, toWrap ) {\n\t// Can't merge if name or priority differs.\n\tif ( wrapper.name !== toWrap.name || wrapper.priority !== toWrap.priority ) {\n\t\treturn false;\n\t}\n\n\t// Check if attributes can be merged.\n\tfor ( let key of wrapper.getAttributeKeys() ) {\n\t\t// Classes and styles should be checked separately.\n\t\tif ( key === 'class' || key === 'style' ) {\n\t\t\tcontinue;\n\t\t}\n\n\t\t// If some attributes are different we cannot wrap.\n\t\tif ( toWrap.hasAttribute( key ) && toWrap.getAttribute( key ) !== wrapper.getAttribute( key ) ) {\n\t\t\treturn false;\n\t\t}\n\t}\n\n\t// Check if styles can be merged.\n\tfor ( let key of wrapper.getStyleNames() ) {\n\t\tif ( toWrap.hasStyle( key ) && toWrap.getStyle( key ) !== wrapper.getStyle( key ) ) {\n\t\t\treturn false;\n\t\t}\n\t}\n\n\t// Move all attributes/classes/styles from wrapper to wrapped AttributeElement.\n\tfor ( let key of wrapper.getAttributeKeys() ) {\n\t\t// Classes and styles should be checked separately.\n\t\tif ( key === 'class' || key === 'style' ) {\n\t\t\tcontinue;\n\t\t}\n\n\t\t// Move only these attributes that are not present - other are similar.\n\t\tif ( !toWrap.hasAttribute( key ) ) {\n\t\t\ttoWrap.setAttribute( key, wrapper.getAttribute( key ) );\n\t\t}\n\t}\n\n\tfor ( let key of wrapper.getStyleNames() ) {\n\t\tif ( !toWrap.hasStyle( key ) ) {\n\t\t\ttoWrap.setStyle( key, wrapper.getStyle( key ) );\n\t\t}\n\t}\n\n\tfor ( let key of wrapper.getClassNames() ) {\n\t\tif ( !toWrap.hasClass( key ) ) {\n\t\t\ttoWrap.addClass( key );\n\t\t}\n\t}\n\n\treturn true;\n}\n\n// Unwraps {@link module:engine/view/attributeelement~AttributeElement AttributeElement} from another by removing corresponding attributes,\n// classes and styles. All attributes, classes and styles from wrapper should be present inside element being unwrapped.\n//\n// @param {module:engine/view/attributeelement~AttributeElement} wrapper Wrapper AttributeElement.\n// @param {module:engine/view/attributeelement~AttributeElement} toUnwrap AttributeElement to unwrap using wrapper element.\n// @returns {Boolean} Returns `true` if elements are unwrapped.\nfunction unwrapAttributeElement( wrapper, toUnwrap ) {\n\t// Can't unwrap if name or priority differs.\n\tif ( wrapper.name !== toUnwrap.name || wrapper.priority !== toUnwrap.priority ) {\n\t\treturn false;\n\t}\n\n\t// Check if AttributeElement has all wrapper attributes.\n\tfor ( let key of wrapper.getAttributeKeys() ) {\n\t\t// Classes and styles should be checked separately.\n\t\tif ( key === 'class' || key === 'style' ) {\n\t\t\tcontinue;\n\t\t}\n\n\t\t// If some attributes are missing or different we cannot unwrap.\n\t\tif ( !toUnwrap.hasAttribute( key ) || toUnwrap.getAttribute( key ) !== wrapper.getAttribute( key ) ) {\n\t\t\treturn false;\n\t\t}\n\t}\n\n\t// Check if AttributeElement has all wrapper classes.\n\tif ( !toUnwrap.hasClass( ...wrapper.getClassNames() ) ) {\n\t\treturn false;\n\t}\n\n\t// Check if AttributeElement has all wrapper styles.\n\tfor ( let key of wrapper.getStyleNames() ) {\n\t\t// If some styles are missing or different we cannot unwrap.\n\t\tif ( !toUnwrap.hasStyle( key ) || toUnwrap.getStyle( key ) !== wrapper.getStyle( key ) ) {\n\t\t\treturn false;\n\t\t}\n\t}\n\n\t// Remove all wrapper's attributes from unwrapped element.\n\tfor ( let key of wrapper.getAttributeKeys() ) {\n\t\t// Classes and styles should be checked separately.\n\t\tif ( key === 'class' || key === 'style' ) {\n\t\t\tcontinue;\n\t\t}\n\n\t\ttoUnwrap.removeAttribute( key );\n\t}\n\n\t// Remove all wrapper's classes from unwrapped element.\n\ttoUnwrap.removeClass( ...wrapper.getClassNames() );\n\n\t// Remove all wrapper's styles from unwrapped element.\n\ttoUnwrap.removeStyle( ...wrapper.getStyleNames() );\n\n\treturn true;\n}\n\n// Returns `true` if range is located in same {@link module:engine/view/attributeelement~AttributeElement AttributeElement}\n// (`start` and `end` positions are located inside same {@link module:engine/view/attributeelement~AttributeElement AttributeElement}),\n// starts on 0 offset and ends after last child node.\n//\n// @param {module:engine/view/range~Range} Range\n// @returns {Boolean}\nfunction rangeSpansOnAllChildren( range ) {\n\treturn range.start.parent == range.end.parent && range.start.parent.is( 'attributeElement' ) &&\n\t\trange.start.offset === 0 && range.end.offset === range.start.parent.childCount;\n}\n\n// Checks if provided nodes are valid to insert. Checks if each node is an instance of\n// {@link module:engine/view/text~Text Text} or {@link module:engine/view/attributeelement~AttributeElement AttributeElement},\n// {@link module:engine/view/containerelement~ContainerElement ContainerElement},\n// {@link module:engine/view/emptyelement~EmptyElement EmptyElement} or\n// {@link module:engine/view/uielement~UIElement UIElement}.\n//\n// Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-writer-insert-invalid-node` when nodes to insert\n// contains instances that are not {@link module:engine/view/text~Text Texts},\n// {@link module:engine/view/emptyelement~EmptyElement EmptyElements},\n// {@link module:engine/view/uielement~UIElement UIElements},\n// {@link module:engine/view/attributeelement~AttributeElement AttributeElements} or\n// {@link module:engine/view/containerelement~ContainerElement ContainerElements}.\n//\n// @param Iterable.<module:engine/view/text~Text|module:engine/view/attributeelement~AttributeElement\n// |module:engine/view/containerelement~ContainerElement> nodes\nfunction validateNodesToInsert( nodes ) {\n\tfor ( let node of nodes ) {\n\t\tif ( !validNodesToInsert.some( ( validNode => node instanceof validNode ) ) ) {\n\t\t\t/**\n\t\t\t * Inserted nodes should be valid to insert. of {@link module:engine/view/attributeelement~AttributeElement AttributeElement},\n\t\t\t * {@link module:engine/view/containerelement~ContainerElement ContainerElement},\n\t\t\t * {@link module:engine/view/emptyelement~EmptyElement EmptyElement},\n\t\t\t * {@link module:engine/view/uielement~UIElement UIElement}, {@link module:engine/view/text~Text Text}.\n\t\t\t *\n\t\t\t * @error view-writer-insert-invalid-node\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'view-writer-insert-invalid-node' );\n\t\t}\n\n\t\tif ( !node.is( 'text' ) ) {\n\t\t\tvalidateNodesToInsert( node.getChildren() );\n\t\t}\n\t}\n}\n\nconst validNodesToInsert = [ Text, AttributeElement, ContainerElement, EmptyElement, UIElement ];\n\n// Checks if node is ContainerElement or DocumentFragment, because in most cases they should be treated the same way.\n//\n// @param {module:engine/view/node~Node} node\n// @returns {Boolean} Returns `true` if node is instance of ContainerElement or DocumentFragment.\nfunction isContainerOrFragment( node ) {\n\treturn node && ( node.is( 'containerElement' ) || node.is( 'documentFragment' ) );\n}\n\n// Checks if {@link module:engine/view/range~Range#start range start} and {@link module:engine/view/range~Range#end range end} are placed\n// inside same {@link module:engine/view/containerelement~ContainerElement container element}.\n// Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-writer-invalid-range-container` when validation fails.\n//\n// @param {module:engine/view/range~Range} range\nfunction validateRangeContainer( range ) {\n\tconst startContainer = getParentContainer( range.start );\n\tconst endContainer = getParentContainer( range.end );\n\n\tif ( !startContainer || !endContainer || startContainer !== endContainer ) {\n\t\t/**\n\t\t * Range container is invalid. This can happen if {@link module:engine/view/range~Range#start range start} and\n\t\t * {@link module:engine/view/range~Range#end range end} positions are not placed inside same container or\n\t\t * parent container for these positions cannot be found.\n\t\t *\n\t\t * @error view-writer-invalid-range-container\n\t\t */\n\t\tthrow new CKEditorError( 'view-writer-invalid-range-container' );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/view/writer.js\n// module id = 76\n// module chunks = 0","import apply from './_apply';\nimport toInteger from './toInteger';\n\n/** Used as the `TypeError` message for \"Functions\" methods. */\nvar FUNC_ERROR_TEXT = 'Expected a function';\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeMax = Math.max;\n\n/**\n * Creates a function that invokes `func` with the `this` binding of the\n * created function and arguments from `start` and beyond provided as\n * an array.\n *\n * **Note:** This method is based on the\n * [rest parameter](https://mdn.io/rest_parameters).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Function\n * @param {Function} func The function to apply a rest parameter to.\n * @param {number} [start=func.length-1] The start position of the rest parameter.\n * @returns {Function} Returns the new function.\n * @example\n *\n * var say = _.rest(function(what, names) {\n *   return what + ' ' + _.initial(names).join(', ') +\n *     (_.size(names) > 1 ? ', & ' : '') + _.last(names);\n * });\n *\n * say('hello', 'fred', 'barney', 'pebbles');\n * // => 'hello fred, barney, & pebbles'\n */\nfunction rest(func, start) {\n  if (typeof func != 'function') {\n    throw new TypeError(FUNC_ERROR_TEXT);\n  }\n  start = nativeMax(start === undefined ? (func.length - 1) : toInteger(start), 0);\n  return function() {\n    var args = arguments,\n        index = -1,\n        length = nativeMax(args.length - start, 0),\n        array = Array(length);\n\n    while (++index < length) {\n      array[index] = args[start + index];\n    }\n    switch (start) {\n      case 0: return func.call(this, array);\n      case 1: return func.call(this, args[0], array);\n      case 2: return func.call(this, args[0], args[1], array);\n    }\n    var otherArgs = Array(start + 1);\n    index = -1;\n    while (++index < start) {\n      otherArgs[index] = args[index];\n    }\n    otherArgs[start] = array;\n    return apply(func, this, otherArgs);\n  };\n}\n\nexport default rest;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/rest.js\n// module id = 8\n// module chunks = 0"," \t// The module cache\n \tvar installedModules = {};\n\n \t// The require function\n \tfunction __webpack_require__(moduleId) {\n\n \t\t// Check if module is in cache\n \t\tif(installedModules[moduleId])\n \t\t\treturn installedModules[moduleId].exports;\n\n \t\t// Create a new module (and put it into the cache)\n \t\tvar module = installedModules[moduleId] = {\n \t\t\ti: moduleId,\n \t\t\tl: false,\n \t\t\texports: {}\n \t\t};\n\n \t\t// Execute the module function\n \t\tmodules[moduleId].call(module.exports, module, module.exports, __webpack_require__);\n\n \t\t// Flag the module as loaded\n \t\tmodule.l = true;\n\n \t\t// Return the exports of the module\n \t\treturn module.exports;\n \t}\n\n\n \t// expose the modules object (__webpack_modules__)\n \t__webpack_require__.m = modules;\n\n \t// expose the module cache\n \t__webpack_require__.c = installedModules;\n\n \t// identity function for calling harmony imports with the correct context\n \t__webpack_require__.i = function(value) { return value; };\n\n \t// define getter function for harmony exports\n \t__webpack_require__.d = function(exports, name, getter) {\n \t\tif(!__webpack_require__.o(exports, name)) {\n \t\t\tObject.defineProperty(exports, name, {\n \t\t\t\tconfigurable: false,\n \t\t\t\tenumerable: true,\n \t\t\t\tget: getter\n \t\t\t});\n \t\t}\n \t};\n\n \t// getDefaultExport function for compatibility with non-harmony modules\n \t__webpack_require__.n = function(module) {\n \t\tvar getter = module && module.__esModule ?\n \t\t\tfunction getDefault() { return module['default']; } :\n \t\t\tfunction getModuleExports() { return module; };\n \t\t__webpack_require__.d(getter, 'a', getter);\n \t\treturn getter;\n \t};\n\n \t// Object.prototype.hasOwnProperty.call\n \t__webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };\n\n \t// __webpack_public_path__\n \t__webpack_require__.p = \"\";\n\n \t// Load entry module and return exports\n \treturn __webpack_require__(__webpack_require__.s = 527);\n\n\n\n// WEBPACK FOOTER //\n// webpack/bootstrap 7897e2108f2124e1315c","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/ckeditorerror\n */\n\n/**\n * The CKEditor error class.\n *\n * All errors will be shortened during the minification process in order to reduce the code size.\n * Therefore, all error messages should be documented in the same way as those in {@link module:utils/log}.\n *\n * Read more in the {@link module:utils/log} module.\n *\n * @extends Error\n */\nexport default class CKEditorError extends Error {\n\t/**\n\t * Creates an instance of the CKEditorError class.\n\t *\n\t * Read more about error logging in the {@link module:utils/log} module.\n\t *\n\t * @param {String} message The error message in an `error-name: Error message.` format.\n\t * During the minification process the \"Error message\" part will be removed to limit the code size\n\t * and a link to this error documentation will be added to the `message`.\n\t * @param {Object} [data] Additional data describing the error. A stringified version of this object\n\t * will be appended to the error message, so the data are quickly visible in the console. The original\n\t * data object will also be later available under the {@link #data} property.\n\t */\n\tconstructor( message, data ) {\n\t\tif ( data ) {\n\t\t\tmessage += ' ' + JSON.stringify( data );\n\t\t}\n\n\t\tsuper( message );\n\n\t\t/**\n\t\t * @member {String}\n\t\t */\n\t\tthis.name = 'CKEditorError';\n\n\t\t/**\n\t\t * The additional error data passed to the constructor.\n\t\t *\n\t\t * @member {Object}\n\t\t */\n\t\tthis.data = data;\n\t}\n\n\t/**\n\t * Checks if error is an instance of CKEditorError class.\n\t *\n\t * @param {Object} error Object to check.\n\t * @returns {Boolean}\n\t */\n\tstatic isCKEditorError( error ) {\n\t\treturn error instanceof CKEditorError;\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/ckeditorerror.js\n// module id = 0\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/position\n */\n\nimport TreeWalker from './treewalker';\nimport last from '@ckeditor/ckeditor5-utils/src/lib/lodash/last';\nimport compareArrays from '@ckeditor/ckeditor5-utils/src/comparearrays';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\nimport Text from './text';\n\n/**\n * Represents a position in the model tree.\n *\n * **Note:** Position is based on offsets, not indexes. This means that position in element containing two text nodes\n * with data `foo` and `bar`, position between them has offset `3`, not `1`.\n * See {@link module:engine/model/position~Position#path} for more.\n *\n * Since position in a model is represented by a {@link module:engine/model/position~Position#root position root} and\n * {@link module:engine/model/position~Position#path position path} it is possible to create positions placed in non-existing elements.\n * This requirement is important for {@link module:engine/model/operation/transform~transform operational transformation}.\n *\n * Also, {@link module:engine/model/operation/operation~Operation operations}\n * kept in {@link module:engine/model/document~Document#history document history}\n * are storing positions (and ranges) which were correct when those operations were applied, but may not be correct\n * after document got changed.\n *\n * When changes are applied to model, it may also happen that {@link module:engine/model/position~Position#parent position parent}\n * will change even if position path has not changed. Keep in mind, that if a position leads to non-existing element,\n * {@link module:engine/model/position~Position#parent} and some other properties and methods will throw errors.\n *\n * In most cases, position with wrong path is caused by an error in code, but it is sometimes needed, as described above.\n */\nexport default class Position {\n\t/**\n\t * Creates a position.\n\t *\n\t * @param {module:engine/model/element~Element|module:engine/model/documentfragment~DocumentFragment} root Root of the position.\n\t * @param {Array.<Number>} path Position path. See {@link module:engine/model/position~Position#path}.\n\t */\n\tconstructor( root, path ) {\n\t\tif ( !root.is( 'element' ) && !root.is( 'documentFragment' ) ) {\n\t\t\t/**\n\t\t\t * Position root invalid.\n\t\t\t *\n\t\t\t * @error position-root-invalid.\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'model-position-root-invalid: Position root invalid.' );\n\t\t}\n\n\t\tif ( !( path instanceof Array ) || path.length === 0 ) {\n\t\t\t/**\n\t\t\t * Position path must be an Array with at least one item.\n\t\t\t *\n\t\t\t * @error position-path-incorrect\n\t\t\t * @param path\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'model-position-path-incorrect: Position path must be an Array with at least one item.', { path: path } );\n\t\t}\n\n\t\t// Normalize the root and path (if element was passed).\n\t\tpath = root.getPath().concat( path );\n\t\troot = root.root;\n\n\t\t/**\n\t\t * Root of the position path.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/model/element~Element|module:engine/model/documentfragment~DocumentFragment}\n\t\t * module:engine/model/position~Position#root\n\t\t */\n\t\tthis.root = root;\n\n\t\t/**\n\t\t * Position of the node it the tree. Path is described through offsets, not indexes.\n\t\t *\n\t\t * Position can be placed before, after or in a {@link module:engine/model/node~Node node} if that node has\n\t\t * {@link module:engine/model/node~Node#offsetSize} greater than `1`. Items in position path are\n\t\t * {@link module:engine/model/node~Node#startOffset starting offsets} of position ancestors, starting from direct root children,\n\t\t * down to the position offset in it's parent.\n\t\t *\n\t\t *\t\t ROOT\n\t\t *\t\t  |- P            before: [ 0 ]         after: [ 1 ]\n\t\t *\t\t  |- UL           before: [ 1 ]         after: [ 2 ]\n\t\t *\t\t     |- LI        before: [ 1, 0 ]      after: [ 1, 1 ]\n\t\t *\t\t     |  |- foo    before: [ 1, 0, 0 ]   after: [ 1, 0, 3 ]\n\t\t *\t\t     |- LI        before: [ 1, 1 ]      after: [ 1, 2 ]\n\t\t *\t\t        |- bar    before: [ 1, 1, 0 ]   after: [ 1, 1, 3 ]\n\t\t *\n\t\t * `foo` and `bar` are representing {@link module:engine/model/text~Text text nodes}. Since text nodes has offset size\n\t\t * greater than `1` you can place position offset between their start and end:\n\t\t *\n\t\t *\t\t ROOT\n\t\t *\t\t  |- P\n\t\t *\t\t  |- UL\n\t\t *\t\t     |- LI\n\t\t *\t\t     |  |- f^o|o  ^ has path: [ 1, 0, 1 ]   | has path: [ 1, 0, 2 ]\n\t\t *\t\t     |- LI\n\t\t *\t\t        |- b^a|r  ^ has path: [ 1, 1, 1 ]   | has path: [ 1, 1, 2 ]\n\t\t *\n\t\t * @member {Array.<Number>} module:engine/model/position~Position#path\n\t\t */\n\t\tthis.path = path;\n\t}\n\n\t/**\n\t * Offset at which this position is located in its {@link module:engine/model/position~Position#parent parent}. It is equal\n\t * to the last item in position {@link module:engine/model/position~Position#path path}.\n\t *\n\t * @type {Number}\n\t */\n\tget offset() {\n\t\treturn last( this.path );\n\t}\n\n\t/**\n\t * @param {Number} newOffset\n\t */\n\tset offset( newOffset ) {\n\t\tthis.path[ this.path.length - 1 ] = newOffset;\n\t}\n\n\t/**\n\t * Parent element of this position.\n\t *\n\t * Keep in mind that `parent` value is calculated when the property is accessed.\n\t * If {@link module:engine/model/position~Position#path position path}\n\t * leads to a non-existing element, `parent` property will throw error.\n\t *\n\t * Also it is a good idea to cache `parent` property if it is used frequently in an algorithm (i.e. in a long loop).\n\t *\n\t * @readonly\n\t * @type {module:engine/model/element~Element}\n\t */\n\tget parent() {\n\t\tlet parent = this.root;\n\n\t\tfor ( let i = 0; i < this.path.length - 1; i++ ) {\n\t\t\tparent = parent.getChild( parent.offsetToIndex( this.path[ i ] ) );\n\t\t}\n\n\t\treturn parent;\n\t}\n\n\t/**\n\t * Position {@link module:engine/model/position~Position#offset offset} converted to an index in position's parent node. It is\n\t * equal to the {@link module:engine/model/node~Node#index index} of a node after this position. If position is placed\n\t * in text node, position index is equal to the index of that text node.\n\t *\n\t * @readonly\n\t * @type {Number}\n\t */\n\tget index() {\n\t\treturn this.parent.offsetToIndex( this.offset );\n\t}\n\n\t/**\n\t * Returns {@link module:engine/model/text~Text text node} instance in which this position is placed or `null` if this\n\t * position is not in a text node.\n\t *\n\t * @readonly\n\t * @type {module:engine/model/text~Text|null}\n\t */\n\tget textNode() {\n\t\tlet node = this.parent.getChild( this.index );\n\n\t\treturn ( node instanceof Text && node.startOffset < this.offset ) ? node : null;\n\t}\n\n\t/**\n\t * Node directly after this position or `null` if this position is in text node.\n\t *\n\t * @readonly\n\t * @type {module:engine/model/node~Node|null}\n\t */\n\tget nodeAfter() {\n\t\treturn this.textNode === null ? this.parent.getChild( this.index ) : null;\n\t}\n\n\t/**\n\t * Node directly before this position or `null` if this position is in text node.\n\t *\n\t * @readonly\n\t * @type {Node}\n\t */\n\tget nodeBefore() {\n\t\treturn this.textNode === null ? this.parent.getChild( this.index - 1 ) : null;\n\t}\n\n\t/**\n\t * Is `true` if position is at the beginning of its {@link module:engine/model/position~Position#parent parent}, `false` otherwise.\n\t *\n\t * @readonly\n\t * @type {Boolean}\n\t */\n\tget isAtStart() {\n\t\treturn this.offset === 0;\n\t}\n\n\t/**\n\t * Is `true` if position is at the end of its {@link module:engine/model/position~Position#parent parent}, `false` otherwise.\n\t *\n\t * @readonly\n\t * @type {Boolean}\n\t */\n\tget isAtEnd() {\n\t\treturn this.offset == this.parent.maxOffset;\n\t}\n\n\t/**\n\t * Checks whether this position is before or after given position.\n\t *\n\t * @param {module:engine/model/position~Position} otherPosition Position to compare with.\n\t * @returns {module:engine/model/position~PositionRelation}\n\t */\n\tcompareWith( otherPosition ) {\n\t\tif ( this.root != otherPosition.root ) {\n\t\t\treturn 'different';\n\t\t}\n\n\t\tconst result = compareArrays( this.path, otherPosition.path );\n\n\t\tswitch ( result ) {\n\t\t\tcase 'same':\n\t\t\t\treturn 'same';\n\n\t\t\tcase 'prefix':\n\t\t\t\treturn 'before';\n\n\t\t\tcase 'extension':\n\t\t\t\treturn 'after';\n\n\t\t\tdefault:\n\t\t\t\tif ( this.path[ result ] < otherPosition.path[ result ] ) {\n\t\t\t\t\treturn 'before';\n\t\t\t\t} else {\n\t\t\t\t\treturn 'after';\n\t\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Gets the farthest position which matches the callback using\n\t * {@link module:engine/model/treewalker~TreeWalker TreeWalker}.\n\t *\n\t * For example:\n\t *\n\t * \t\tgetLastMatchingPosition( value => value.type == 'text' );\n\t * \t\t// <paragraph>[]foo</paragraph> -> <paragraph>foo[]</paragraph>\n\t *\n\t * \t\tgetLastMatchingPosition( value => value.type == 'text', { direction: 'backward' } );\n\t * \t\t// <paragraph>foo[]</paragraph> -> <paragraph>[]foo</paragraph>\n\t *\n\t * \t\tgetLastMatchingPosition( value => false );\n\t * \t\t// Do not move the position.\n\t *\n\t * @param {Function} skip Callback function. Gets {@link module:engine/model/treewalker~TreeWalkerValue} and should\n\t * return `true` if the value should be skipped or `false` if not.\n\t * @param {Object} options Object with configuration options. See {@link module:engine/model/treewalker~TreeWalker}.\n\t *\n\t * @returns {module:engine/model/position~Position} The position after the last item which matches the `skip` callback test.\n\t */\n\tgetLastMatchingPosition( skip, options = {} ) {\n\t\toptions.startPosition = this;\n\n\t\tconst treeWalker = new TreeWalker( options );\n\t\ttreeWalker.skip( skip );\n\n\t\treturn treeWalker.position;\n\t}\n\n\t/**\n\t * Returns a path to this position's parent. Parent path is equal to position {@link module:engine/model/position~Position#path path}\n\t * but without the last item.\n\t *\n\t * This method returns the parent path even if the parent does not exists.\n\t *\n\t * @returns {Array.<Number>} Path to the parent.\n\t */\n\tgetParentPath() {\n\t\treturn this.path.slice( 0, -1 );\n\t}\n\n\t/**\n\t * Returns ancestors array of this position, that is this position's parent and its ancestors.\n\t *\n\t * @returns {Array.<module:engine/model/item~Item>} Array with ancestors.\n\t */\n\tgetAncestors() {\n\t\tif ( this.parent.is( 'documentFragment' ) ) {\n\t\t\treturn [ this.parent ];\n\t\t} else {\n\t\t\treturn this.parent.getAncestors( { includeNode: true } );\n\t\t}\n\t}\n\n\t/**\n\t * Returns the slice of two position {@link #path paths} which is identical. The {@link #root roots}\n\t * of these two paths must be identical.\n\t *\n\t * @param {module:engine/model/position~Position} position The second position.\n\t * @returns {Array.<Number>} The common path.\n\t */\n\tgetCommonPath( position ) {\n\t\tif ( this.root != position.root ) {\n\t\t\treturn [];\n\t\t}\n\n\t\t// We find on which tree-level start and end have the lowest common ancestor\n\t\tlet cmp = compareArrays( this.path, position.path );\n\t\t// If comparison returned string it means that arrays are same.\n\t\tlet diffAt = ( typeof cmp == 'string' ) ? Math.min( this.path.length, position.path.length ) : cmp;\n\n\t\treturn this.path.slice( 0, diffAt );\n\t}\n\n\t/**\n\t * Returns a new instance of `Position`, that has same {@link #parent parent} but it's offset\n\t * is shifted by `shift` value (can be a negative value).\n\t *\n\t * @param {Number} shift Offset shift. Can be a negative value.\n\t * @returns {module:engine/model/position~Position} Shifted position.\n\t */\n\tgetShiftedBy( shift ) {\n\t\tlet shifted = Position.createFromPosition( this );\n\n\t\tlet offset = shifted.offset + shift;\n\t\tshifted.offset = offset < 0 ? 0 : offset;\n\n\t\treturn shifted;\n\t}\n\n\t/**\n\t * Checks whether this position is after given position.\n\t *\n\t * @see module:engine/model/position~Position#isBefore\n\t *\n\t * @param {module:engine/model/position~Position} otherPosition Position to compare with.\n\t * @returns {Boolean} True if this position is after given position.\n\t */\n\tisAfter( otherPosition ) {\n\t\treturn this.compareWith( otherPosition ) == 'after';\n\t}\n\n\t/**\n\t * Checks whether this position is before given position.\n\t *\n\t * **Note:** watch out when using negation of the value returned by this method, because the negation will also\n\t * be `true` if positions are in different roots and you might not expect this. You should probably use\n\t * `a.isAfter( b ) || a.isEqual( b )` or `!a.isBefore( p ) && a.root == b.root` in most scenarios. If your\n\t * condition uses multiple `isAfter` and `isBefore` checks, build them so they do not use negated values, i.e.:\n\t *\n\t *\t\tif ( a.isBefore( b ) && c.isAfter( d ) ) {\n\t *\t\t\t// do A.\n\t *\t\t} else {\n\t *\t\t\t// do B.\n\t *\t\t}\n\t *\n\t * or, if you have only one if-branch:\n\t *\n\t *\t\tif ( !( a.isBefore( b ) && c.isAfter( d ) ) {\n\t *\t\t\t// do B.\n\t *\t\t}\n\t *\n\t * rather than:\n\t *\n\t *\t\tif ( !a.isBefore( b ) || && !c.isAfter( d ) ) {\n\t *\t\t\t// do B.\n\t *\t\t} else {\n\t *\t\t\t// do A.\n\t *\t\t}\n\t *\n\t * @param {module:engine/model/position~Position} otherPosition Position to compare with.\n\t * @returns {Boolean} True if this position is before given position.\n\t */\n\tisBefore( otherPosition ) {\n\t\treturn this.compareWith( otherPosition ) == 'before';\n\t}\n\n\t/**\n\t * Checks whether this position is equal to given position.\n\t *\n\t * @param {module:engine/model/position~Position} otherPosition Position to compare with.\n\t * @returns {Boolean} True if positions are same.\n\t */\n\tisEqual( otherPosition ) {\n\t\treturn this.compareWith( otherPosition ) == 'same';\n\t}\n\n\t/**\n\t * Checks whether this position is touching given position. Positions touch when there are no text nodes\n\t * or empty nodes in a range between them. Technically, those positions are not equal but in many cases\n\t * they are very similar or even indistinguishable.\n\t *\n\t * **Note:** this method traverses model document so it can be only used when range is up-to-date with model document.\n\t *\n\t * @param {module:engine/model/position~Position} otherPosition Position to compare with.\n\t * @returns {Boolean} True if positions touch.\n\t */\n\tisTouching( otherPosition ) {\n\t\tlet left = null;\n\t\tlet right = null;\n\t\tlet compare = this.compareWith( otherPosition );\n\n\t\tswitch ( compare ) {\n\t\t\tcase 'same':\n\t\t\t\treturn true;\n\n\t\t\tcase 'before':\n\t\t\t\tleft = Position.createFromPosition( this );\n\t\t\t\tright = Position.createFromPosition( otherPosition );\n\t\t\t\tbreak;\n\n\t\t\tcase 'after':\n\t\t\t\tleft = Position.createFromPosition( otherPosition );\n\t\t\t\tright = Position.createFromPosition( this );\n\t\t\t\tbreak;\n\n\t\t\tdefault:\n\t\t\t\treturn false;\n\t\t}\n\n\t\t// Cached for optimization purposes.\n\t\tlet leftParent = left.parent;\n\n\t\twhile ( left.path.length + right.path.length ) {\n\t\t\tif ( left.isEqual( right ) ) {\n\t\t\t\treturn true;\n\t\t\t}\n\n\t\t\tif ( left.path.length > right.path.length ) {\n\t\t\t\tif ( left.offset !== leftParent.maxOffset ) {\n\t\t\t\t\treturn false;\n\t\t\t\t}\n\n\t\t\t\tleft.path = left.path.slice( 0, -1 );\n\t\t\t\tleftParent = leftParent.parent;\n\t\t\t\tleft.offset++;\n\t\t\t} else {\n\t\t\t\tif ( right.offset !== 0 ) {\n\t\t\t\t\treturn false;\n\t\t\t\t}\n\n\t\t\t\tright.path = right.path.slice( 0, -1 );\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Returns a copy of this position that is updated by removing `howMany` nodes starting from `deletePosition`.\n\t * It may happen that this position is in a removed node. If that is the case, `null` is returned instead.\n\t *\n\t * @protected\n\t * @param {module:engine/model/position~Position} deletePosition Position before the first removed node.\n\t * @param {Number} howMany How many nodes are removed.\n\t * @returns {module:engine/model/position~Position|null} Transformed position or `null`.\n\t */\n\t_getTransformedByDeletion( deletePosition, howMany ) {\n\t\tlet transformed = Position.createFromPosition( this );\n\n\t\t// This position can't be affected if deletion was in a different root.\n\t\tif ( this.root != deletePosition.root ) {\n\t\t\treturn transformed;\n\t\t}\n\n\t\tif ( compareArrays( deletePosition.getParentPath(), this.getParentPath() ) == 'same' ) {\n\t\t\t// If nodes are removed from the node that is pointed by this position...\n\t\t\tif ( deletePosition.offset < this.offset ) {\n\t\t\t\t// And are removed from before an offset of that position...\n\t\t\t\tif ( deletePosition.offset + howMany > this.offset ) {\n\t\t\t\t\t// Position is in removed range, it's no longer in the tree.\n\t\t\t\t\treturn null;\n\t\t\t\t} else {\n\t\t\t\t\t// Decrement the offset accordingly.\n\t\t\t\t\ttransformed.offset -= howMany;\n\t\t\t\t}\n\t\t\t}\n\t\t} else if ( compareArrays( deletePosition.getParentPath(), this.getParentPath() ) == 'prefix' ) {\n\t\t\t// If nodes are removed from a node that is on a path to this position...\n\t\t\tconst i = deletePosition.path.length - 1;\n\n\t\t\tif ( deletePosition.offset <= this.path[ i ] ) {\n\t\t\t\t// And are removed from before next node of that path...\n\t\t\t\tif ( deletePosition.offset + howMany > this.path[ i ] ) {\n\t\t\t\t\t// If the next node of that path is removed return null\n\t\t\t\t\t// because the node containing this position got removed.\n\t\t\t\t\treturn null;\n\t\t\t\t} else {\n\t\t\t\t\t// Otherwise, decrement index on that path.\n\t\t\t\t\ttransformed.path[ i ] -= howMany;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn transformed;\n\t}\n\n\t/**\n\t * Returns a copy of this position that is updated by inserting `howMany` nodes at `insertPosition`.\n\t *\n\t * @protected\n\t * @param {module:engine/model/position~Position} insertPosition Position where nodes are inserted.\n\t * @param {Number} howMany How many nodes are inserted.\n\t * @param {Boolean} insertBefore Flag indicating whether nodes are inserted before or after `insertPosition`.\n\t * This is important only when `insertPosition` and this position are same. If that is the case and the flag is\n\t * set to `true`, this position will get transformed. If the flag is set to `false`, it won't.\n\t * @returns {module:engine/model/position~Position} Transformed position.\n\t */\n\t_getTransformedByInsertion( insertPosition, howMany, insertBefore ) {\n\t\tlet transformed = Position.createFromPosition( this );\n\n\t\t// This position can't be affected if insertion was in a different root.\n\t\tif ( this.root != insertPosition.root ) {\n\t\t\treturn transformed;\n\t\t}\n\n\t\tif ( compareArrays( insertPosition.getParentPath(), this.getParentPath() ) == 'same' ) {\n\t\t\t// If nodes are inserted in the node that is pointed by this position...\n\t\t\tif ( insertPosition.offset < this.offset || ( insertPosition.offset == this.offset && insertBefore ) ) {\n\t\t\t\t// And are inserted before an offset of that position...\n\t\t\t\t// \"Push\" this positions offset.\n\t\t\t\ttransformed.offset += howMany;\n\t\t\t}\n\t\t} else if ( compareArrays( insertPosition.getParentPath(), this.getParentPath() ) == 'prefix' ) {\n\t\t\t// If nodes are inserted in a node that is on a path to this position...\n\t\t\tconst i = insertPosition.path.length - 1;\n\n\t\t\tif ( insertPosition.offset <= this.path[ i ] ) {\n\t\t\t\t// And are inserted before next node of that path...\n\t\t\t\t// \"Push\" the index on that path.\n\t\t\t\ttransformed.path[ i ] += howMany;\n\t\t\t}\n\t\t}\n\n\t\treturn transformed;\n\t}\n\n\t/**\n\t * Returns a copy of this position that is updated by moving `howMany` nodes from `sourcePosition` to `targetPosition`.\n\t *\n\t * @protected\n\t * @param {module:engine/model/position~Position} sourcePosition Position before the first element to move.\n\t * @param {module:engine/model/position~Position} targetPosition Position where moved elements will be inserted.\n\t * @param {Number} howMany How many consecutive nodes to move, starting from `sourcePosition`.\n\t * @param {Boolean} insertBefore Flag indicating whether moved nodes are pasted before or after `insertPosition`.\n\t * This is important only when `targetPosition` and this position are same. If that is the case and the flag is\n\t * set to `true`, this position will get transformed by range insertion. If the flag is set to `false`, it won't.\n\t * @param {Boolean} [sticky] Flag indicating whether this position \"sticks\" to range, that is if it should be moved\n\t * with the moved range if it is equal to one of range's boundaries.\n\t * @returns {module:engine/model/position~Position} Transformed position.\n\t */\n\t_getTransformedByMove( sourcePosition, targetPosition, howMany, insertBefore, sticky ) {\n\t\t// Moving a range removes nodes from their original position. We acknowledge this by proper transformation.\n\t\tlet transformed = this._getTransformedByDeletion( sourcePosition, howMany );\n\n\t\t// Then we update target position, as it could be affected by nodes removal too.\n\t\ttargetPosition = targetPosition._getTransformedByDeletion( sourcePosition, howMany );\n\n\t\tif ( transformed === null || ( sticky && transformed.isEqual( sourcePosition ) ) ) {\n\t\t\t// This position is inside moved range (or sticks to it).\n\t\t\t// In this case, we calculate a combination of this position, move source position and target position.\n\t\t\ttransformed = this._getCombined( sourcePosition, targetPosition );\n\t\t} else {\n\t\t\t// This position is not inside a removed range.\n\t\t\t// In next step, we simply reflect inserting `howMany` nodes, which might further affect the position.\n\t\t\ttransformed = transformed._getTransformedByInsertion( targetPosition, howMany, insertBefore );\n\t\t}\n\n\t\treturn transformed;\n\t}\n\n\t/**\n\t * Returns a new position that is a combination of this position and given positions.\n\t *\n\t * The combined position is a copy of this position transformed by moving a range starting at `source` position\n\t * to the `target` position. It is expected that this position is inside the moved range.\n\t *\n\t * Example:\n\t *\n\t *\t\tlet original = new Position( root, [ 2, 3, 1 ] );\n\t *\t\tlet source = new Position( root, [ 2, 2 ] );\n\t *\t\tlet target = new Position( otherRoot, [ 1, 1, 3 ] );\n\t *\t\toriginal._getCombined( source, target ); // path is [ 1, 1, 4, 1 ], root is `otherRoot`\n\t *\n\t * Explanation:\n\t *\n\t * We have a position `[ 2, 3, 1 ]` and move some nodes from `[ 2, 2 ]` to `[ 1, 1, 3 ]`. The original position\n\t * was inside moved nodes and now should point to the new place. The moved nodes will be after\n\t * positions `[ 1, 1, 3 ]`, `[ 1, 1, 4 ]`, `[ 1, 1, 5 ]`. Since our position was in the second moved node,\n\t * the transformed position will be in a sub-tree of a node at `[ 1, 1, 4 ]`. Looking at original path, we\n\t * took care of `[ 2, 3 ]` part of it. Now we have to add the rest of the original path to the transformed path.\n\t * Finally, the transformed position will point to `[ 1, 1, 4, 1 ]`.\n\t *\n\t * @protected\n\t * @param {module:engine/model/position~Position} source Beginning of the moved range.\n\t * @param {module:engine/model/position~Position} target Position where the range is moved.\n\t * @returns {module:engine/model/position~Position} Combined position.\n\t */\n\t_getCombined( source, target ) {\n\t\tconst i = source.path.length - 1;\n\n\t\t// The first part of a path to combined position is a path to the place where nodes were moved.\n\t\tlet combined = Position.createFromPosition( target );\n\n\t\t// Then we have to update the rest of the path.\n\n\t\t// Fix the offset because this position might be after `from` position and we have to reflect that.\n\t\tcombined.offset = combined.offset + this.path[ i ] - source.offset;\n\n\t\t// Then, add the rest of the path.\n\t\t// If this position is at the same level as `from` position nothing will get added.\n\t\tcombined.path = combined.path.concat( this.path.slice( i + 1 ) );\n\n\t\treturn combined;\n\t}\n\n\t/**\n\t * Creates position at the given location. The location can be specified as:\n\t *\n\t * * a {@link module:engine/model/position~Position position},\n\t * * parent element and offset (offset defaults to `0`),\n\t * * parent element and `'end'` (sets position at the end of that element),\n\t * * {@link module:engine/model/item~Item model item} and `'before'` or `'after'` (sets position before or after given model item).\n\t *\n\t * This method is a shortcut to other constructors such as:\n\t *\n\t * * {@link module:engine/model/position~Position.createBefore},\n\t * * {@link module:engine/model/position~Position.createAfter},\n\t * * {@link module:engine/model/position~Position.createFromParentAndOffset},\n\t * * {@link module:engine/model/position~Position.createFromPosition}.\n\t *\n\t * @param {module:engine/model/item~Item|module:engine/model/position~Position} itemOrPosition\n\t * @param {Number|'end'|'before'|'after'} [offset=0] Offset or one of the flags. Used only when\n\t * first parameter is a {@link module:engine/model/item~Item model item}.\n\t */\n\tstatic createAt( itemOrPosition, offset ) {\n\t\tif ( itemOrPosition instanceof Position ) {\n\t\t\treturn this.createFromPosition( itemOrPosition );\n\t\t} else {\n\t\t\tconst node = itemOrPosition;\n\n\t\t\tif ( offset == 'end' ) {\n\t\t\t\toffset = node.maxOffset;\n\t\t\t} else if ( offset == 'before' ) {\n\t\t\t\treturn this.createBefore( node );\n\t\t\t} else if ( offset == 'after' ) {\n\t\t\t\treturn this.createAfter( node );\n\t\t\t} else if ( !offset ) {\n\t\t\t\toffset = 0;\n\t\t\t}\n\n\t\t\treturn this.createFromParentAndOffset( node, offset );\n\t\t}\n\t}\n\n\t/**\n\t * Creates a new position, after given {@link module:engine/model/item~Item model item}.\n\t *\n\t * @param {module:engine/model/item~Item} item Item after which the position should be placed.\n\t * @returns {module:engine/model/position~Position}\n\t */\n\tstatic createAfter( item ) {\n\t\tif ( !item.parent ) {\n\t\t\t/**\n\t\t\t * You can not make position after root.\n\t\t\t *\n\t\t\t * @error position-after-root\n\t\t\t * @param {module:engine/model/item~Item} root\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'model-position-after-root: You can not make position after root.', { root: item } );\n\t\t}\n\n\t\treturn this.createFromParentAndOffset( item.parent, item.endOffset );\n\t}\n\n\t/**\n\t * Creates a new position, before the given {@link module:engine/model/item~Item model item}.\n\t *\n\t * @param {module:engine/model/item~Item} item Item before which the position should be placed.\n\t * @returns {module:engine/model/position~Position}\n\t */\n\tstatic createBefore( item ) {\n\t\tif ( !item.parent ) {\n\t\t\t/**\n\t\t\t * You can not make position before root.\n\t\t\t *\n\t\t\t * @error position-before-root\n\t\t\t * @param {module:engine/model/item~Item} root\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'model-position-before-root: You can not make position before root.', { root: item } );\n\t\t}\n\n\t\treturn this.createFromParentAndOffset( item.parent, item.startOffset );\n\t}\n\n\t/**\n\t * Creates a new position from the parent element and an offset in that element.\n\t *\n\t * @param {module:engine/model/element~Element|module:engine/model/documentfragment~DocumentFragment} parent Position's parent.\n\t * @param {Number} offset Position's offset.\n\t * @returns {module:engine/model/position~Position}\n\t */\n\tstatic createFromParentAndOffset( parent, offset ) {\n\t\tif ( !parent.is( 'element' ) && !parent.is( 'documentFragment' ) ) {\n\t\t\t/**\n\t\t\t * Position parent have to be a model element or model document fragment.\n\t\t\t *\n\t\t\t * @error position-parent-incorrect\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'model-position-parent-incorrect: Position parent have to be a element or document fragment.' );\n\t\t}\n\n\t\tconst path = parent.getPath();\n\n\t\tpath.push( offset );\n\n\t\treturn new this( parent.root, path );\n\t}\n\n\t/**\n\t * Creates a new position, which is equal to passed position.\n\t *\n\t * @param {module:engine/model/position~Position} position Position to be cloned.\n\t * @returns {module:engine/model/position~Position}\n\t */\n\tstatic createFromPosition( position ) {\n\t\treturn new this( position.root, position.path.slice() );\n\t}\n\n\t/**\n\t * Creates a `Position` instance from given plain object (i.e. parsed JSON string).\n\t *\n\t * @param {Object} json Plain object to be converted to `Position`.\n\t * @returns {module:engine/model/position~Position} `Position` instance created using given plain object.\n\t */\n\tstatic fromJSON( json, doc ) {\n\t\tif ( json.root === '$graveyard' ) {\n\t\t\treturn new Position( doc.graveyard, json.path );\n\t\t}\n\n\t\tif ( !doc.hasRoot( json.root ) ) {\n\t\t\t/**\n\t\t\t * Cannot create position for document. Root with specified name does not exist.\n\t\t\t *\n\t\t\t * @error position-fromjson-no-root\n\t\t\t * @param {String} rootName\n\t\t\t */\n\t\t\tthrow new CKEditorError(\n\t\t\t\t'model-position-fromjson-no-root: Cannot create position for document. Root with specified name does not exist.',\n\t\t\t\t{ rootName: json.root }\n\t\t\t);\n\t\t}\n\n\t\treturn new Position( doc.getRoot( json.root ), json.path );\n\t}\n}\n\n/**\n * A flag indicating whether this position is `'before'` or `'after'` or `'same'` as given position.\n * If positions are in different roots `'different'` flag is returned.\n *\n * @typedef {String} module:engine/model/position~PositionRelation\n */\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/position.js\n// module id = 1\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module core/plugin\n */\n\nimport ObservableMixin from '@ckeditor/ckeditor5-utils/src/observablemixin';\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\n\n/**\n * The base class for CKEditor plugin classes.\n *\n * @mixes module:utils/observablemixin~ObservaleMixin\n */\nexport default class Plugin {\n\t/**\n\t * Creates a new Plugin instance. This is the first step of a plugin initialization.\n\t * See also {@link #init} and {@link #afterInit}.\n\t *\n\t * A plugin is always instantiated after its {@link module:core/plugin~Plugin.requires dependencies} and the\n\t * {@link #init} and {@link #afterInit} methods are called in the same order.\n\t *\n\t * Usually, you'll want to put your plugin's initialization code in the {@link #init} method.\n\t * The constructor can be understood as \"before init\" and used in special cases, just like\n\t * {@link #afterInit} servers for the special \"after init\" scenarios (e.g. code which depends on other\n\t * plugins, but which doesn't {@link module:core/plugin~Plugin.requires explicitly require} them).\n\t *\n\t * @param {module:core/editor/editor~Editor} editor\n\t */\n\tconstructor( editor ) {\n\t\t/**\n\t\t * The editor instance.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:core/editor/editor~Editor} module:core/plugin~Plugin#editor\n\t\t */\n\t\tthis.editor = editor;\n\t}\n\n\t/**\n\t * An array of plugins required by this plugin.\n\t *\n\t * To keep a plugin class definition tight it's recommended to define this property as a static getter:\n\t *\n\t *\t\timport Image from './image.js';\n\t *\n\t *\t\texport default class ImageCaption extends Plugin {\n     *\t\t\tstatic get requires() {\n     *\t\t\t\treturn [ Image ];\n     *\t\t\t}\n\t *\t\t}\n\t *\n\t * @static\n\t * @member {Array.<Function>|undefined} module:core/plugin~Plugin.requires\n\t */\n\n\t/**\n\t * Optional name of the plugin. If set, the plugin will be available in\n\t * {@link module:core/plugincollection~PluginCollection#get} by its\n\t * name and its constructor. If not, then only by its constructor.\n\t *\n\t * The name should reflect the package name + path to that module. E.g. `ckeditor5-image/src/image.js` plugin\n\t * should be named `image/image` (the `ckeditor5-` prefix is stripped during compilation).\n\t *\n\t * To keep a plugin class definition tight it's recommended to define this property as a static getter:\n\t *\n\t *\t\texport default class ImageCaption {\n     *\t\t\tstatic get pluginName() {\n     *\t\t\t\treturn 'image/imagecaption';\n     *\t\t\t}\n\t *\t\t}\n\t *\n\t * @static\n\t * @member {String|undefined} module:core/plugin~Plugin.pluginName\n\t */\n\n\t/**\n\t * The second stage (after plugin {@link #constructor}) of plugin initialization.\n\t * Unlike the plugin constructor this method can perform asynchronous.\n\t *\n\t * A plugin's `init()` method is called after its {@link module:core/plugin~Plugin.requires dependencies} are initialized,\n\t * so in the same order as constructors of these plugins.\n\t *\n\t * @returns {null|Promise}\n\t */\n\tinit() {}\n\n\t/**\n\t * The third (and last) stage of plugin initialization. See also {@link #constructor} and {@link #init}.\n\t *\n\t * @returns {null|Promise}\n\t */\n\tafterInit() {}\n\n\t/**\n\t * Destroys the plugin.\n\t *\n\t * @returns {null|Promise}\n\t */\n\tdestroy() {}\n}\n\nmix( Plugin, ObservableMixin );\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-core/src/plugin.js\n// module id = 2\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/range\n */\n\nimport Position from './position';\nimport TreeWalker from './treewalker';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/**\n * Range class. Range is iterable.\n */\nexport default class Range {\n\t/**\n\t * Creates a range spanning from `start` position to `end` position.\n\t *\n\t * **Note:** Constructor creates it's own {@link module:engine/model/position~Position Position} instances basing on passed values.\n\t *\n\t * @param {module:engine/model/position~Position} start Start position.\n\t * @param {module:engine/model/position~Position} [end] End position. If not set, range will be collapsed at `start` position.\n\t */\n\tconstructor( start, end = null ) {\n\t\t/**\n\t\t * Start position.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/model/position~Position}\n\t\t */\n\t\tthis.start = Position.createFromPosition( start );\n\n\t\t/**\n\t\t * End position.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/model/position~Position}\n\t\t */\n\t\tthis.end = end ? Position.createFromPosition( end ) : Position.createFromPosition( start );\n\t}\n\n\t/**\n\t * Returns an iterator that iterates over all {@link module:engine/model/item~Item items} that are in this range and returns\n\t * them together with additional information like length or {@link module:engine/model/position~Position positions},\n\t * grouped as {@link module:engine/model/treewalker~TreeWalkerValue}.\n\t * It iterates over all {@link module:engine/model/textproxy~TextProxy text contents} that are inside the range\n\t * and all the {@link module:engine/model/element~Element}s that are entered into when iterating over this range.\n\t *\n\t * This iterator uses {@link module:engine/model/treewalker~TreeWalker} with `boundaries` set to this range\n\t * and `ignoreElementEnd` option set to `true`.\n\t *\n\t * @returns {Iterable.<module:engine/model/treewalker~TreeWalkerValue>}\n\t */\n\t*[ Symbol.iterator ]() {\n\t\tyield* new TreeWalker( { boundaries: this, ignoreElementEnd: true } );\n\t}\n\n\t/**\n\t * Returns whether the range is collapsed, that is if {@link #start start} and\n\t * {@link #end end} positions are equal.\n\t *\n\t * @type {Boolean}\n\t */\n\tget isCollapsed() {\n\t\treturn this.start.isEqual( this.end );\n\t}\n\n\t/**\n\t * Returns whether this range is flat, that is if {@link #start start} position and\n\t * {@link #end end} position are in the same {@link module:engine/model/position~Position#parent parent}.\n\t *\n\t * @type {Boolean}\n\t */\n\tget isFlat() {\n\t\treturn this.start.parent === this.end.parent;\n\t}\n\n\t/**\n\t * Range root element.\n\t *\n\t * @type {module:engine/model/element~Element|module:engine/model/documentfragment~DocumentFragment}\n\t */\n\tget root() {\n\t\treturn this.start.root;\n\t}\n\n\t/**\n\t * Checks whether this range contains given {@link module:engine/model/position~Position position}.\n\t *\n\t * @param {module:engine/model/position~Position} position Position to check.\n\t * @returns {Boolean} `true` if given {@link module:engine/model/position~Position position} is contained in this range, `false` otherwise.\n\t */\n\tcontainsPosition( position ) {\n\t\treturn position.isAfter( this.start ) && position.isBefore( this.end );\n\t}\n\n\t/**\n\t * Checks whether this range contains given {@link ~Range range}.\n\t *\n\t * @param {module:engine/model/range~Range} otherRange Range to check.\n\t * @returns {Boolean} `true` if given {@link ~Range range} boundaries are contained by this range, `false` otherwise.\n\t */\n\tcontainsRange( otherRange ) {\n\t\treturn this.containsPosition( otherRange.start ) && this.containsPosition( otherRange.end );\n\t}\n\n\t/**\n\t * Two ranges are equal if their {@link #start start} and\n\t * {@link #end end} positions are equal.\n\t *\n\t * @param {module:engine/model/range~Range} otherRange Range to compare with.\n\t * @returns {Boolean} `true` if ranges are equal, `false` otherwise.\n\t */\n\tisEqual( otherRange ) {\n\t\treturn this.start.isEqual( otherRange.start ) && this.end.isEqual( otherRange.end );\n\t}\n\n\t/**\n\t * Checks and returns whether this range intersects with given range.\n\t *\n\t * @param {module:engine/model/range~Range} otherRange Range to compare with.\n\t * @returns {Boolean} `true` if ranges intersect, `false` otherwise.\n\t */\n\tisIntersecting( otherRange ) {\n\t\treturn this.start.isBefore( otherRange.end ) && this.end.isAfter( otherRange.start );\n\t}\n\n\t/**\n\t * Computes which part(s) of this {@link ~Range range} is not a part of given {@link ~Range range}.\n\t * Returned array contains zero, one or two {@link ~Range ranges}.\n\t *\n\t * Examples:\n\t *\n\t *\t\tlet range = new Range( new Position( root, [ 2, 7 ] ), new Position( root, [ 4, 0, 1 ] ) );\n\t *\t\tlet otherRange = new Range( new Position( root, [ 1 ] ), new Position( root, [ 5 ] ) );\n\t *\t\tlet transformed = range.getDifference( otherRange );\n\t *\t\t// transformed array has no ranges because `otherRange` contains `range`\n\t *\n\t *\t\totherRange = new Range( new Position( root, [ 1 ] ), new Position( root, [ 3 ] ) );\n\t *\t\ttransformed = range.getDifference( otherRange );\n\t *\t\t// transformed array has one range: from [ 3 ] to [ 4, 0, 1 ]\n\t *\n\t *\t\totherRange = new Range( new Position( root, [ 3 ] ), new Position( root, [ 4 ] ) );\n\t *\t\ttransformed = range.getDifference( otherRange );\n\t *\t\t// transformed array has two ranges: from [ 2, 7 ] to [ 3 ] and from [ 4 ] to [ 4, 0, 1 ]\n\t *\n\t * @param {module:engine/model/range~Range} otherRange Range to differentiate against.\n\t * @returns {Array.<module:engine/model/range~Range>} The difference between ranges.\n\t */\n\tgetDifference( otherRange ) {\n\t\tconst ranges = [];\n\n\t\tif ( this.isIntersecting( otherRange ) ) {\n\t\t\t// Ranges intersect.\n\n\t\t\tif ( this.containsPosition( otherRange.start ) ) {\n\t\t\t\t// Given range start is inside this range. This means that we have to\n\t\t\t\t// add shrunken range - from the start to the middle of this range.\n\t\t\t\tranges.push( new Range( this.start, otherRange.start ) );\n\t\t\t}\n\n\t\t\tif ( this.containsPosition( otherRange.end ) ) {\n\t\t\t\t// Given range end is inside this range. This means that we have to\n\t\t\t\t// add shrunken range - from the middle of this range to the end.\n\t\t\t\tranges.push( new Range( otherRange.end, this.end ) );\n\t\t\t}\n\t\t} else {\n\t\t\t// Ranges do not intersect, return the original range.\n\t\t\tranges.push( Range.createFromRange( this ) );\n\t\t}\n\n\t\treturn ranges;\n\t}\n\n\t/**\n\t * Returns an intersection of this {@link ~Range range} and given {@link ~Range range}.\n\t * Intersection is a common part of both of those ranges. If ranges has no common part, returns `null`.\n\t *\n\t * Examples:\n\t *\n\t *\t\tlet range = new Range( new Position( root, [ 2, 7 ] ), new Position( root, [ 4, 0, 1 ] ) );\n\t *\t\tlet otherRange = new Range( new Position( root, [ 1 ] ), new Position( root, [ 2 ] ) );\n\t *\t\tlet transformed = range.getIntersection( otherRange ); // null - ranges have no common part\n\t *\n\t *\t\totherRange = new Range( new Position( root, [ 3 ] ), new Position( root, [ 5 ] ) );\n\t *\t\ttransformed = range.getIntersection( otherRange ); // range from [ 3 ] to [ 4, 0, 1 ]\n\t *\n\t * @param {module:engine/model/range~Range} otherRange Range to check for intersection.\n\t * @returns {module:engine/model/range~Range|null} A common part of given ranges or `null` if ranges have no common part.\n\t */\n\tgetIntersection( otherRange ) {\n\t\tif ( this.isIntersecting( otherRange ) ) {\n\t\t\t// Ranges intersect, so a common range will be returned.\n\t\t\t// At most, it will be same as this range.\n\t\t\tlet commonRangeStart = this.start;\n\t\t\tlet commonRangeEnd = this.end;\n\n\t\t\tif ( this.containsPosition( otherRange.start ) ) {\n\t\t\t\t// Given range start is inside this range. This means thaNt we have to\n\t\t\t\t// shrink common range to the given range start.\n\t\t\t\tcommonRangeStart = otherRange.start;\n\t\t\t}\n\n\t\t\tif ( this.containsPosition( otherRange.end ) ) {\n\t\t\t\t// Given range end is inside this range. This means that we have to\n\t\t\t\t// shrink common range to the given range end.\n\t\t\t\tcommonRangeEnd = otherRange.end;\n\t\t\t}\n\n\t\t\treturn new Range( commonRangeStart, commonRangeEnd );\n\t\t}\n\n\t\t// Ranges do not intersect, so they do not have common part.\n\t\treturn null;\n\t}\n\n\t/**\n\t * Computes and returns the smallest set of {@link #isFlat flat} ranges, that covers this range in whole.\n\t *\n\t * See an example of a model structure (`[` and `]` are range boundaries):\n\t *\n\t *\t\troot                                                            root\n\t *\t\t |- element DIV                         DIV             P2              P3             DIV\n\t *\t\t |   |- element H                   H        P1        f o o           b a r       H         P4\n\t *\t\t |   |   |- \"fir[st\"             fir[st     lorem                               se]cond     ipsum\n\t *\t\t |   |- element P1\n\t *\t\t |   |   |- \"lorem\"                                              ||\n\t *\t\t |- element P2                                                   ||\n\t *\t\t |   |- \"foo\"                                                    VV\n\t *\t\t |- element P3\n\t *\t\t |   |- \"bar\"                                                   root\n\t *\t\t |- element DIV                         DIV             [P2             P3]             DIV\n\t *\t\t |   |- element H                   H       [P1]       f o o           b a r        H         P4\n\t *\t\t |   |   |- \"se]cond\"            fir[st]    lorem                               [se]cond     ipsum\n\t *\t\t |   |- element P4\n\t *\t\t |   |   |- \"ipsum\"\n\t *\n\t * As it can be seen, letters contained in the range are: `stloremfoobarse`, spread across different parents.\n\t * We are looking for minimal set of flat ranges that contains the same nodes.\n\t *\n\t * Minimal flat ranges for above range `( [ 0, 0, 3 ], [ 3, 0, 2 ] )` will be:\n\t *\n\t *\t\t( [ 0, 0, 3 ], [ 0, 0, 5 ] ) = \"st\"\n\t *\t\t( [ 0, 1 ], [ 0, 2 ] ) = element P1 (\"lorem\")\n\t *\t\t( [ 1 ], [ 3 ] ) = element P2, element P3 (\"foobar\")\n\t *\t\t( [ 3, 0, 0 ], [ 3, 0, 2 ] ) = \"se\"\n\t *\n\t * **Note:** if an {@link module:engine/model/element~Element element} is not wholly contained in this range, it won't be returned\n\t * in any of the returned flat ranges. See in the example how `H` elements at the beginning and at the end of the range\n\t * were omitted. Only their parts that were wholly in the range were returned.\n\t *\n\t * **Note:** this method is not returning flat ranges that contain no nodes.\n\t *\n\t * @returns {Array.<module:engine/model/range~Range>} Array of flat ranges covering this range.\n\t */\n\tgetMinimalFlatRanges() {\n\t\tconst ranges = [];\n\t\tconst diffAt = this.start.getCommonPath( this.end ).length;\n\n\t\tlet pos = Position.createFromPosition( this.start );\n\t\tlet posParent = pos.parent;\n\n\t\t// Go up.\n\t\twhile ( pos.path.length > diffAt + 1 ) {\n\t\t\tlet howMany = posParent.maxOffset - pos.offset;\n\n\t\t\tif ( howMany !== 0 ) {\n\t\t\t\tranges.push( new Range( pos, pos.getShiftedBy( howMany ) ) );\n\t\t\t}\n\n\t\t\tpos.path = pos.path.slice( 0, -1 );\n\t\t\tpos.offset++;\n\t\t\tposParent = posParent.parent;\n\t\t}\n\n\t\t// Go down.\n\t\twhile ( pos.path.length <= this.end.path.length ) {\n\t\t\tlet offset = this.end.path[ pos.path.length - 1 ];\n\t\t\tlet howMany = offset - pos.offset;\n\n\t\t\tif ( howMany !== 0 ) {\n\t\t\t\tranges.push( new Range( pos, pos.getShiftedBy( howMany ) ) );\n\t\t\t}\n\n\t\t\tpos.offset = offset;\n\t\t\tpos.path.push( 0 );\n\t\t}\n\n\t\treturn ranges;\n\t}\n\n\t/**\n\t * Creates a {@link module:engine/model/treewalker~TreeWalker TreeWalker} instance with this range as a boundary.\n\t *\n\t * @param {Object} options Object with configuration options. See {@link module:engine/model/treewalker~TreeWalker}.\n\t * @param {module:engine/model/position~Position} [options.startPosition]\n\t * @param {Boolean} [options.singleCharacters=false]\n\t * @param {Boolean} [options.shallow=false]\n\t * @param {Boolean} [options.ignoreElementEnd=false]\n\t */\n\tgetWalker( options = {} ) {\n\t\toptions.boundaries = this;\n\n\t\treturn new TreeWalker( options );\n\t}\n\n\t/**\n\t * Returns an iterator that iterates over all {@link module:engine/model/item~Item items} that are in this range and returns\n\t * them.\n\t *\n\t * This method uses {@link module:engine/model/treewalker~TreeWalker} with `boundaries` set to this range and `ignoreElementEnd` option\n\t * set to `true`. However it returns only {@link module:engine/model/item~Item model items},\n\t * not {@link module:engine/model/treewalker~TreeWalkerValue}.\n\t *\n\t * You may specify additional options for the tree walker. See {@link module:engine/model/treewalker~TreeWalker} for\n\t * a full list of available options.\n\t *\n\t * @method getItems\n\t * @param {Object} options Object with configuration options. See {@link module:engine/model/treewalker~TreeWalker}.\n\t * @returns {Iterable.<module:engine/model/item~Item>}\n\t */\n\t*getItems( options = {} ) {\n\t\toptions.boundaries = this;\n\t\toptions.ignoreElementEnd = true;\n\n\t\tconst treeWalker = new TreeWalker( options );\n\n\t\tfor ( let value of treeWalker ) {\n\t\t\tyield value.item;\n\t\t}\n\t}\n\n\t/**\n\t * Returns an iterator that iterates over all {@link module:engine/model/position~Position positions} that are boundaries or\n\t * contained in this range.\n\t *\n\t * This method uses {@link module:engine/model/treewalker~TreeWalker} with `boundaries` set to this range. However it returns only\n\t * {@link module:engine/model/position~Position positions}, not {@link module:engine/model/treewalker~TreeWalkerValue}.\n\t *\n\t * You may specify additional options for the tree walker. See {@link module:engine/model/treewalker~TreeWalker} for\n\t * a full list of available options.\n\t *\n\t * @param {Object} options Object with configuration options. See {@link module:engine/model/treewalker~TreeWalker}.\n\t * @returns {Iterable.<module:engine/model/position~Position>}\n\t */\n\t*getPositions( options = {} ) {\n\t\toptions.boundaries = this;\n\n\t\tconst treeWalker = new TreeWalker( options );\n\n\t\tyield treeWalker.position;\n\n\t\tfor ( let value of treeWalker ) {\n\t\t\tyield value.nextPosition;\n\t\t}\n\t}\n\n\t/**\n\t * Returns a range that is a result of transforming this range by given `delta`.\n\t *\n\t * **Note:** transformation may break one range into multiple ranges (e.g. when a part of the range is\n\t * moved to a different part of document tree). For this reason, an array is returned by this method and it\n\t * may contain one or more `Range` instances.\n\t *\n\t * @param {module:engine/model/delta/delta~Delta} delta Delta to transform range by.\n\t * @returns {Array.<module:engine/model/range~Range>} Range which is the result of transformation.\n\t */\n\tgetTransformedByDelta( delta ) {\n\t\tlet ranges = [ Range.createFromRange( this ) ];\n\n\t\t// Operation types that a range can be transformed by.\n\t\tconst supportedTypes = new Set( [ 'insert', 'move', 'remove', 'reinsert' ] );\n\n\t\tfor ( let operation of delta.operations ) {\n\t\t\tif ( supportedTypes.has( operation.type ) ) {\n\t\t\t\tfor ( let i = 0; i < ranges.length; i++ ) {\n\t\t\t\t\tconst result = ranges[ i ]._getTransformedByDocumentChange(\n\t\t\t\t\t\toperation.type,\n\t\t\t\t\t\tdelta.type,\n\t\t\t\t\t\toperation.targetPosition || operation.position,\n\t\t\t\t\t\toperation.howMany || operation.nodes.maxOffset,\n\t\t\t\t\t\toperation.sourcePosition\n\t\t\t\t\t);\n\n\t\t\t\t\tranges.splice( i, 1, ...result );\n\n\t\t\t\t\ti += result.length - 1;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn ranges;\n\t}\n\n\t/**\n\t * Returns a range that is a result of transforming this range by multiple `deltas`.\n\t *\n\t * **Note:** transformation may break one range into multiple ranges (e.g. when a part of the range is\n\t * moved to a different part of document tree). For this reason, an array is returned by this method and it\n\t * may contain one or more `Range` instances.\n\t *\n\t * @param {Iterable.<module:engine/model/delta~Delta>} deltas Deltas to transform the range by.\n\t * @returns {Array.<module:engine/model/range~Range>} Range which is the result of transformation.\n\t */\n\tgetTransformedByDeltas( deltas ) {\n\t\tlet ranges = [ Range.createFromRange( this ) ];\n\n\t\tfor ( let delta of deltas ) {\n\t\t\tfor ( let i = 0; i < ranges.length; i++ ) {\n\t\t\t\tlet result = ranges[ i ].getTransformedByDelta( delta );\n\n\t\t\t\tranges.splice( i, 1, ...result );\n\t\t\t\ti += result.length - 1;\n\t\t\t}\n\t\t}\n\n\t\t// It may happen that a range is split into two, and then the part of second \"piece\" is moved into first\n\t\t// \"piece\". In this case we will have incorrect third rage, which should not be included in the result --\n\t\t// because it is already included in first \"piece\". In this loop we are looking for all such ranges that\n\t\t// are inside other ranges and we simply remove them.\n\t\tfor ( let i = 0; i < ranges.length; i++ ) {\n\t\t\tconst range = ranges[ i ];\n\n\t\t\tfor ( let j = i + 1; j < ranges.length; j++ ) {\n\t\t\t\tconst next = ranges[ j ];\n\n\t\t\t\tif ( range.containsRange( next ) || next.containsRange( range ) || range.isEqual( next ) ) {\n\t\t\t\t\tranges.splice( j, 1 );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn ranges;\n\t}\n\n\t/**\n\t * Returns a range that is a result of transforming this range by a change in the model document.\n\t *\n\t * @protected\n\t * @param {'insert'|'move'|'remove'|'reinsert'} type Change type.\n\t * @param {String} deltaType Type of delta that introduced the change.\n\t * @param {module:engine/model/position~Position} targetPosition Position before the first changed node.\n\t * @param {Number} howMany How many nodes has been changed.\n\t * @param {module:engine/model/position~Position} sourcePosition Source position of changes.\n\t * @returns {Array.<module:engine/model/range~Range>}\n\t */\n\t_getTransformedByDocumentChange( type, deltaType, targetPosition, howMany, sourcePosition ) {\n\t\tif ( type == 'insert' ) {\n\t\t\treturn this._getTransformedByInsertion( targetPosition, howMany, false, false );\n\t\t} else {\n\t\t\tconst sourceRange = Range.createFromPositionAndShift( sourcePosition, howMany );\n\n\t\t\tif ( deltaType == 'merge' && this.isCollapsed && ( this.start.isEqual( sourceRange.start ) || this.start.isEqual( sourceRange.end ) ) ) {\n\t\t\t\t// Collapsed range is in merged element.\n\t\t\t\t// Without fix, the range would end up in the graveyard, together with removed element.\n\t\t\t\t// <p>foo</p><p>[]bar</p> -> <p>foobar</p><p>[]</p> -> <p>foobar</p> -> <p>foo[]bar</p>\n\t\t\t\treturn [ new Range( targetPosition.getShiftedBy( this.start.offset ) ) ];\n\t\t\t} else if ( type == 'move' ) {\n\t\t\t\t// In all examples `[]` is `this` and `{}` is `sourceRange`, while `^` is move target position.\n\t\t\t\t//\n\t\t\t\t// Example:\n\t\t\t\t// <p>xx</p>^<w>{<p>a[b</p>}</w><p>c]d</p>   -->   <p>xx</p><p>a[b</p><w></w><p>c]d</p>\n\t\t\t\t// ^<p>xx</p><w>{<p>a[b</p>}</w><p>c]d</p>   -->   <p>a[b</p><p>xx</p><w></w><p>c]d</p>  // Note <p>xx</p> inclusion.\n\t\t\t\t// <w>{<p>a[b</p>}</w>^<p>c]d</p>            -->   <w></w><p>a[b</p><p>c]d</p>\n\t\t\t\tif ( sourceRange.containsPosition( this.start ) && this.containsPosition( sourceRange.end ) && this.end.isAfter( targetPosition ) ) {\n\t\t\t\t\tlet start = this.start._getCombined( sourcePosition, targetPosition._getTransformedByDeletion( sourcePosition, howMany ) );\n\t\t\t\t\tconst end = this.end._getTransformedByMove( sourcePosition, targetPosition, howMany, false, false );\n\n\t\t\t\t\treturn [ new Range( start, end ) ];\n\t\t\t\t}\n\n\t\t\t\t// Example:\n\t\t\t\t// <p>c[d</p><w>{<p>a]b</p>}</w>^<p>xx</p>   -->   <p>c[d</p><w></w><p>a]b</p><p>xx</p>\n\t\t\t\t// <p>c[d</p><w>{<p>a]b</p>}</w><p>xx</p>^   -->   <p>c[d</p><w></w><p>xx</p><p>a]b</p>  // Note <p>xx</p> inclusion.\n\t\t\t\t// <p>c[d</p>^<w>{<p>a]b</p>}</w>            -->   <p>c[d</p><p>a]b</p><w></w>\n\t\t\t\tif ( sourceRange.containsPosition( this.end ) && this.containsPosition( sourceRange.start ) && this.start.isBefore( targetPosition ) ) {\n\t\t\t\t\tconst start = this.start._getTransformedByMove( sourcePosition, targetPosition, howMany, true, false );\n\t\t\t\t\tlet end = this.end._getCombined( sourcePosition, targetPosition._getTransformedByDeletion( sourcePosition, howMany ) );\n\n\t\t\t\t\treturn [ new Range( start, end ) ];\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn this._getTransformedByMove( sourcePosition, targetPosition, howMany );\n\t\t}\n\t}\n\n\t/**\n\t * Returns an array containing one or two {@link ~Range ranges} that are a result of transforming this\n\t * {@link ~Range range} by inserting `howMany` nodes at `insertPosition`. Two {@link ~Range ranges} are\n\t * returned if the insertion was inside this {@link ~Range range} and `spread` is set to `true`.\n\t *\n\t * Examples:\n\t *\n\t *\t\tlet range = new Range( new Position( root, [ 2, 7 ] ), new Position( root, [ 4, 0, 1 ] ) );\n\t *\t\tlet transformed = range._getTransformedByInsertion( new Position( root, [ 1 ] ), 2 );\n\t *\t\t// transformed array has one range from [ 4, 7 ] to [ 6, 0, 1 ]\n\t *\n\t *\t\ttransformed = range._getTransformedByInsertion( new Position( root, [ 4, 0, 0 ] ), 4 );\n\t *\t\t// transformed array has one range from [ 2, 7 ] to [ 4, 0, 5 ]\n\t *\n\t *\t\ttransformed = range._getTransformedByInsertion( new Position( root, [ 3, 2 ] ), 4 );\n\t *\t\t// transformed array has one range, which is equal to original range\n\t *\n\t *\t\ttransformed = range._getTransformedByInsertion( new Position( root, [ 3, 2 ] ), 4, true );\n\t *\t\t// transformed array has two ranges: from [ 2, 7 ] to [ 3, 2 ] and from [ 3, 6 ] to [ 4, 0, 1 ]\n\t *\n\t *\t\ttransformed = range._getTransformedByInsertion( new Position( root, [ 4, 0, 1 ] ), 4, false, false );\n\t *\t\t// transformed array has one range which is equal to original range because insertion is after the range boundary\n\t *\n\t *\t\ttransformed = range._getTransformedByInsertion( new Position( root, [ 4, 0, 1 ] ), 4, false, true );\n\t *\t\t// transformed array has one range: from [ 2, 7 ] to [ 4, 0, 5 ] because range was expanded\n\t *\n\t * @protected\n\t * @param {module:engine/model/position~Position} insertPosition Position where nodes are inserted.\n\t * @param {Number} howMany How many nodes are inserted.\n\t * @param {Boolean} [spread] Flag indicating whether this {~Range range} should be spread if insertion\n\t * was inside the range. Defaults to `false`.\n\t * @param {Boolean} [isSticky] Flag indicating whether insertion should expand a range if it is in a place of\n\t * range boundary. Defaults to `false`.\n\t * @returns {Array.<module:engine/model/range~Range>} Result of the transformation.\n\t */\n\t_getTransformedByInsertion( insertPosition, howMany, spread = false, isSticky = false ) {\n\t\tif ( spread && this.containsPosition( insertPosition ) ) {\n\t\t\t// Range has to be spread. The first part is from original start to the spread point.\n\t\t\t// The other part is from spread point to the original end, but transformed by\n\t\t\t// insertion to reflect insertion changes.\n\n\t\t\treturn [\n\t\t\t\tnew Range( this.start, insertPosition ),\n\t\t\t\tnew Range(\n\t\t\t\t\tinsertPosition._getTransformedByInsertion( insertPosition, howMany, true ),\n\t\t\t\t\tthis.end._getTransformedByInsertion( insertPosition, howMany, this.isCollapsed )\n\t\t\t\t)\n\t\t\t];\n\t\t} else {\n\t\t\tconst range = Range.createFromRange( this );\n\n\t\t\tlet insertBeforeStart = range.isCollapsed ? true : !isSticky;\n\t\t\tlet insertBeforeEnd = range.isCollapsed ? true : isSticky;\n\n\t\t\trange.start = range.start._getTransformedByInsertion( insertPosition, howMany, insertBeforeStart );\n\t\t\trange.end = range.end._getTransformedByInsertion( insertPosition, howMany, insertBeforeEnd );\n\n\t\t\treturn [ range ];\n\t\t}\n\t}\n\n\t/**\n\t * Returns an array containing {@link ~Range ranges} that are a result of transforming this\n\t * {@link ~Range range} by moving `howMany` nodes from `sourcePosition` to `targetPosition`.\n\t *\n\t * @protected\n\t * @param {module:engine/model/position~Position} sourcePosition Position from which nodes are moved.\n\t * @param {module:engine/model/position~Position} targetPosition Position to where nodes are moved.\n\t * @param {Number} howMany How many nodes are moved.\n\t * @returns {Array.<module:engine/model/range~Range>} Result of the transformation.\n\t */\n\t_getTransformedByMove( sourcePosition, targetPosition, howMany ) {\n\t\tif ( this.isCollapsed ) {\n\t\t\tconst newPos = this.start._getTransformedByMove( sourcePosition, targetPosition, howMany, true, false );\n\n\t\t\treturn [ new Range( newPos ) ];\n\t\t}\n\n\t\tlet result;\n\n\t\tconst moveRange = new Range( sourcePosition, sourcePosition.getShiftedBy( howMany ) );\n\n\t\tconst differenceSet = this.getDifference( moveRange );\n\t\tlet difference = null;\n\n\t\tconst common = this.getIntersection( moveRange );\n\n\t\tif ( differenceSet.length == 1 ) {\n\t\t\t// `moveRange` and this range may intersect.\n\t\t\tdifference = new Range(\n\t\t\t\tdifferenceSet[ 0 ].start._getTransformedByDeletion( sourcePosition, howMany ),\n\t\t\t\tdifferenceSet[ 0 ].end._getTransformedByDeletion( sourcePosition, howMany )\n\t\t\t);\n\t\t} else if ( differenceSet.length == 2 ) {\n\t\t\t// `moveRange` is inside this range.\n\t\t\tdifference = new Range(\n\t\t\t\tthis.start,\n\t\t\t\tthis.end._getTransformedByDeletion( sourcePosition, howMany )\n\t\t\t);\n\t\t} // else, `moveRange` contains this range.\n\n\t\tconst insertPosition = targetPosition._getTransformedByDeletion( sourcePosition, howMany );\n\n\t\tif ( difference ) {\n\t\t\tresult = difference._getTransformedByInsertion( insertPosition, howMany, common !== null );\n\t\t} else {\n\t\t\tresult = [];\n\t\t}\n\n\t\tif ( common ) {\n\t\t\tresult.push( new Range(\n\t\t\t\tcommon.start._getCombined( moveRange.start, insertPosition ),\n\t\t\t\tcommon.end._getCombined( moveRange.start, insertPosition )\n\t\t\t) );\n\t\t}\n\n\t\treturn result;\n\t}\n\n\t/**\n\t * Creates a new range, spreading from specified {@link module:engine/model/position~Position position} to a position moved by\n\t * given `shift`. If `shift` is a negative value, shifted position is treated as the beginning of the range.\n\t *\n\t * @param {module:engine/model/position~Position} position Beginning of the range.\n\t * @param {Number} shift How long the range should be.\n\t * @returns {module:engine/model/range~Range}\n\t */\n\tstatic createFromPositionAndShift( position, shift ) {\n\t\tconst start = position;\n\t\tconst end = position.getShiftedBy( shift );\n\n\t\treturn shift > 0 ? new this( start, end ) : new this( end, start );\n\t}\n\n\t/**\n\t * Creates a range from given parents and offsets.\n\t *\n\t * @param {module:engine/model/element~Element} startElement Start position parent element.\n\t * @param {Number} startOffset Start position offset.\n\t * @param {module:engine/model/element~Element} endElement End position parent element.\n\t * @param {Number} endOffset End position offset.\n\t * @returns {module:engine/model/range~Range}\n\t */\n\tstatic createFromParentsAndOffsets( startElement, startOffset, endElement, endOffset ) {\n\t\treturn new this(\n\t\t\tPosition.createFromParentAndOffset( startElement, startOffset ),\n\t\t\tPosition.createFromParentAndOffset( endElement, endOffset )\n\t\t);\n\t}\n\n\t/**\n\t * Creates a new instance of `Range` which is equal to passed range.\n\t *\n\t * @param {module:engine/model/range~Range} range Range to clone.\n\t * @returns {module:engine/model/range~Range}\n\t */\n\tstatic createFromRange( range ) {\n\t\treturn new this( range.start, range.end );\n\t}\n\n\t/**\n\t * Creates a range inside an {@link module:engine/model/element~Element element} which starts before the first child of\n\t * that element and ends after the last child of that element.\n\t *\n\t * @param {module:engine/model/element~Element} element Element which is a parent for the range.\n\t * @returns {module:engine/model/range~Range}\n\t */\n\tstatic createIn( element ) {\n\t\treturn this.createFromParentsAndOffsets( element, 0, element, element.maxOffset );\n\t}\n\n\t/**\n\t * Creates a range that starts before given {@link module:engine/model/item~Item model item} and ends after it.\n\t *\n\t * @param {module:engine/model/item~Item} item\n\t * @returns {module:engine/model/range~Range}\n\t */\n\tstatic createOn( item ) {\n\t\treturn this.createFromPositionAndShift( Position.createBefore( item ), item.offsetSize );\n\t}\n\n\t/**\n\t * Combines all ranges from the passed array into a one range. At least one range has to be passed.\n\t * Passed ranges must not have common parts.\n\t *\n\t * The first range from the array is a reference range. If other ranges start or end on the exactly same position where\n\t * the reference range, they get combined into one range.\n\t *\n\t *\t\t[  ][]  [    ][ ][             ][ ][]  [  ]  // Passed ranges, shown sorted\n\t *\t\t[    ]                                       // The result of the function if the first range was a reference range.\n\t *\t            [                           ]        // The result of the function if the third-to-seventh range was a reference range.\n\t *\t                                           [  ]  // The result of the function if the last range was a reference range.\n\t *\n\t * @param {Array.<module:engine/model/range~Range>} ranges Ranges to combine.\n\t * @returns {module:engine/model/range~Range} Combined range.\n\t */\n\tstatic createFromRanges( ranges ) {\n\t\tif ( ranges.length === 0 ) {\n\t\t\t/**\n\t\t\t * At least one range has to be passed.\n\t\t\t *\n\t\t\t * @error range-create-from-ranges-empty-array\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'range-create-from-ranges-empty-array: At least one range has to be passed.' );\n\t\t} else if ( ranges.length == 1 ) {\n\t\t\treturn this.createFromRange( ranges[ 0 ] );\n\t\t}\n\n\t\t// 1. Set the first range in `ranges` array as a reference range.\n\t\t// If we are going to return just a one range, one of the ranges need to be the reference one.\n\t\t// Other ranges will be stuck to that range, if possible.\n\t\tconst ref = ranges[ 0 ];\n\n\t\t// 2. Sort all the ranges so it's easier to process them.\n\t\tranges.sort( ( a, b ) => a.start.isAfter( b.start ) );\n\n\t\t// 3. Check at which index the reference range is now.\n\t\tconst refIndex = ranges.indexOf( ref );\n\n\t\t// 4. At this moment we don't need the original range.\n\t\t// We are going to modify the result and we need to return a new instance of Range.\n\t\t// We have to create a copy of the reference range.\n\t\tconst result = new this( ref.start, ref.end );\n\n\t\t// 5. Ranges should be checked and glued starting from the range that is closest to the reference range.\n\t\t// Since ranges are sorted, start with the range with index that is closest to reference range index.\n\t\tfor ( let i = refIndex - 1; i >= 0; i++ ) {\n\t\t\tif ( ranges[ i ].end.isEqual( result.start ) ) {\n\t\t\t\tresult.start = Position.createFromPosition( ranges[ i ].start );\n\t\t\t} else {\n\t\t\t\t// If ranges are not starting/ending at the same position there is no point in looking further.\n\t\t\t\tbreak;\n\t\t\t}\n\t\t}\n\n\t\t// 6. Ranges should be checked and glued starting from the range that is closest to the reference range.\n\t\t// Since ranges are sorted, start with the range with index that is closest to reference range index.\n\t\tfor ( let i = refIndex + 1; i < ranges.length; i++ ) {\n\t\t\tif ( ranges[ i ].start.isEqual( result.end ) ) {\n\t\t\t\tresult.end = Position.createFromPosition( ranges[ i ].end );\n\t\t\t} else {\n\t\t\t\t// If ranges are not starting/ending at the same position there is no point in looking further.\n\t\t\t\tbreak;\n\t\t\t}\n\t\t}\n\n\t\treturn result;\n\t}\n\n\t/**\n\t * Creates a `Range` instance from given plain object (i.e. parsed JSON string).\n\t *\n\t * @param {Object} json Plain object to be converted to `Range`.\n\t * @param {module:engine/model/document~Document} doc Document object that will be range owner.\n\t * @returns {module:engine/model/element~Element} `Range` instance created using given plain object.\n\t */\n\tstatic fromJSON( json, doc ) {\n\t\treturn new this( Position.fromJSON( json.start, doc ), Position.fromJSON( json.end, doc ) );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/range.js\n// module id = 3\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/mix\n */\n\n/**\n * Copies enumerable properties and symbols from the objects given as 2nd+ parameters to the\n * prototype of first object (a constructor).\n *\n *\t\tclass Editor {\n *\t\t\t...\n *\t\t}\n *\n *\t\tconst SomeMixin = {\n *\t\t\ta() {\n *\t\t\t\treturn 'a';\n *\t\t\t}\n *\t\t};\n *\n *\t\tmix( Editor, SomeMixin, ... );\n *\n *\t\tnew Editor().a(); // -> 'a'\n *\n * Note: Properties which already exist in the base class will not be overriden.\n *\n * @param {Function} [baseClass] Class which prototype will be extended.\n * @param {Object} [...mixins] Objects from which to get properties.\n */\nexport default function mix( baseClass, ...mixins ) {\n\tmixins.forEach( ( mixin ) => {\n\t\tObject.getOwnPropertyNames( mixin ).concat( Object.getOwnPropertySymbols( mixin ) )\n\t\t\t.forEach( ( key ) => {\n\t\t\t\tif ( key in baseClass.prototype ) {\n\t\t\t\t\treturn;\n\t\t\t\t}\n\n\t\t\t\tconst sourceDescriptor = Object.getOwnPropertyDescriptor( mixin, key );\n\t\t\t\tsourceDescriptor.enumerable = false;\n\n\t\t\t\tObject.defineProperty( baseClass.prototype, key, sourceDescriptor );\n\t\t\t} );\n\t} );\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/mix.js\n// module id = 4\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/element\n */\n\nimport Node from './node';\nimport NodeList from './nodelist';\nimport Text from './text';\nimport isIterable from '@ckeditor/ckeditor5-utils/src/isiterable';\n\n/**\n * Model element. Type of {@link module:engine/model/node~Node node} that has a {@link module:engine/model/element~Element#name name} and\n * {@link module:engine/model/element~Element#getChildren child nodes}.\n *\n * **Important**: see {@link module:engine/model/node~Node} to read about restrictions using `Element` and `Node` API.\n */\nexport default class Element extends Node {\n\t/**\n\t * Creates a model element.\n\t *\n\t * @param {String} name Element's name.\n\t * @param {Object} [attrs] Element's attributes. See {@link module:utils/tomap~toMap} for a list of accepted values.\n\t * @param {module:engine/model/node~Node|Iterable.<module:engine/model/node~Node>} [children]\n\t * One or more nodes to be inserted as children of created element.\n\t */\n\tconstructor( name, attrs, children ) {\n\t\tsuper( attrs );\n\n\t\t/**\n\t\t * Element name.\n\t\t *\n\t\t * @member {String} module:engine/model/element~Element#name\n\t\t */\n\t\tthis.name = name;\n\n\t\t/**\n\t\t * List of children nodes.\n\t\t *\n\t\t * @private\n\t\t * @member {module:engine/model/nodelist~NodeList} module:engine/model/element~Element#_children\n\t\t */\n\t\tthis._children = new NodeList();\n\n\t\tif ( children ) {\n\t\t\tthis.insertChildren( 0, children );\n\t\t}\n\t}\n\n\t/**\n\t * Number of this element's children.\n\t *\n\t * @readonly\n\t * @type {Number}\n\t */\n\tget childCount() {\n\t\treturn this._children.length;\n\t}\n\n\t/**\n\t * Sum of {module:engine/model/node~Node#offsetSize offset sizes} of all of this element's children.\n\t *\n\t * @readonly\n\t * @type {Number}\n\t */\n\tget maxOffset() {\n\t\treturn this._children.maxOffset;\n\t}\n\n\t/**\n\t * Is `true` if there are no nodes inside this element, `false` otherwise.\n\t *\n\t * @readonly\n\t * @type {Boolean}\n\t */\n\tget isEmpty() {\n\t\treturn this.childCount === 0;\n\t}\n\n\t/**\n\t * Checks whether given model tree object is of given type.\n\t *\n\t *\t\tobj.name; // 'listItem'\n\t *\t\tobj instanceof Element; // true\n\t *\n\t *\t\tobj.is( 'element' ); // true\n\t *\t\tobj.is( 'listItem' ); // true\n\t *\t\tobj.is( 'element', 'listItem' ); // true\n\t *\t\tobj.is( 'text' ); // false\n\t *\t\tobj.is( 'element', 'image' ); // false\n\t *\n\t * Read more in {@link module:engine/model/node~Node#is}.\n\t *\n\t * @param {String} type Type to check when `name` parameter is present.\n\t * Otherwise, it acts like the `name` parameter.\n\t * @param {String} [name] Element name.\n\t * @returns {Boolean}\n\t */\n\tis( type, name = null ) {\n\t\tif ( !name ) {\n\t\t\treturn type == 'element' || type == this.name;\n\t\t} else {\n\t\t\treturn type == 'element' && name == this.name;\n\t\t}\n\t}\n\n\t/**\n\t * Gets the child at the given index.\n\t *\n\t * @param {Number} index Index of child.\n\t * @returns {module:engine/model/node~Node} Child node.\n\t */\n\tgetChild( index ) {\n\t\treturn this._children.getNode( index );\n\t}\n\n\t/**\n\t * Returns an iterator that iterates over all of this element's children.\n\t *\n\t * @returns {Iterable.<module:engine/model/node~Node>}\n\t */\n\tgetChildren() {\n\t\treturn this._children[ Symbol.iterator ]();\n\t}\n\n\t/**\n\t * Returns an index of the given child node. Returns `null` if given node is not a child of this element.\n\t *\n\t * @param {module:engine/model/node~Node} node Child node to look for.\n\t * @returns {Number} Child node's index in this element.\n\t */\n\tgetChildIndex( node ) {\n\t\treturn this._children.getNodeIndex( node );\n\t}\n\n\t/**\n\t * Returns the starting offset of given child. Starting offset is equal to the sum of\n\t * {module:engine/model/node~Node#offsetSize offset sizes} of all node's siblings that are before it. Returns `null` if\n\t * given node is not a child of this element.\n\t *\n\t * @param {module:engine/model/node~Node} node Child node to look for.\n\t * @returns {Number} Child node's starting offset.\n\t */\n\tgetChildStartOffset( node ) {\n\t\treturn this._children.getNodeStartOffset( node );\n\t}\n\n\t/**\n\t * Creates a copy of this element and returns it. Created element has same name and attributes as original element.\n\t * If clone is not deep, children of copied element are references to the same nodes as in original element.\n\t * If clone is deep, original element's children are also cloned.\n\t *\n\t * @param {Boolean} [deep=false] Decides whether children of this element should also be cloned (`true`) or not (`false`).\n\t */\n\tclone( deep = false ) {\n\t\tconst children = deep ?\n\t\t\tArray.from( this._children ).map( ( node ) => node.clone() ) :\n\t\t\tArray.from( this._children );\n\n\t\treturn new Element( this.name, this.getAttributes(), children );\n\t}\n\n\t/**\n\t * Returns index of a node that occupies given offset. If given offset is too low, returns `0`. If given offset is\n\t * too high, returns {@link module:engine/model/element~Element#getChildIndex index after last child}.\n\t *\n\t *\t\tconst textNode = new Text( 'foo' );\n\t *\t\tconst pElement = new Element( 'p' );\n\t *\t\tconst divElement = new Element( [ textNode, pElement ] );\n\t *\t\tdivElement.offsetToIndex( -1 ); // Returns 0, because offset is too low.\n\t *\t\tdivElement.offsetToIndex( 0 ); // Returns 0, because offset 0 is taken by `textNode` which is at index 0.\n\t *\t\tdivElement.offsetToIndex( 1 ); // Returns 0, because `textNode` has `offsetSize` equal to 3, so it occupies offset 1 too.\n\t *\t\tdivElement.offsetToIndex( 2 ); // Returns 0.\n\t *\t\tdivElement.offsetToIndex( 3 ); // Returns 1.\n\t *\t\tdivElement.offsetToIndex( 4 ); // Returns 2. There are no nodes at offset 4, so last available index is returned.\n\t *\n\t * @param {Number} offset Offset to look for.\n\t * @returns {Number}\n\t */\n\toffsetToIndex( offset ) {\n\t\treturn this._children.offsetToIndex( offset );\n\t}\n\n\t/**\n\t * {@link module:engine/model/element~Element#insertChildren Inserts} one or more nodes at the end of this element.\n\t *\n\t * @param {module:engine/model/node~Node|Iterable.<module:engine/model/node~Node>} nodes Nodes to be inserted.\n\t */\n\tappendChildren( nodes ) {\n\t\tthis.insertChildren( this.childCount, nodes );\n\t}\n\n\t/**\n\t * Inserts one or more nodes at the given index and sets {@link module:engine/model/node~Node#parent parent} of these nodes\n\t * to this element.\n\t *\n\t * @param {Number} index Index at which nodes should be inserted.\n\t * @param {module:engine/model/node~Node|Iterable.<module:engine/model/node~Node>} nodes Nodes to be inserted.\n\t */\n\tinsertChildren( index, nodes ) {\n\t\tnodes = normalize( nodes );\n\n\t\tfor ( let node of nodes ) {\n\t\t\tnode.parent = this;\n\t\t}\n\n\t\tthis._children.insertNodes( index, nodes );\n\t}\n\n\t/**\n\t * Removes one or more nodes starting at the given index and sets\n\t * {@link module:engine/model/node~Node#parent parent} of these nodes to `null`.\n\t *\n\t * @param {Number} index Index of the first node to remove.\n\t * @param {Number} [howMany=1] Number of nodes to remove.\n\t * @returns {Array.<module:engine/model/node~Node>} Array containing removed nodes.\n\t */\n\tremoveChildren( index, howMany = 1 ) {\n\t\tconst nodes = this._children.removeNodes( index, howMany );\n\n\t\tfor ( let node of nodes ) {\n\t\t\tnode.parent = null;\n\t\t}\n\n\t\treturn nodes;\n\t}\n\n\t/**\n\t * Returns a descendant node by its path relative to this element.\n\t *\n\t *\t\t// <this>a<b>c</b></this>\n\t *\t\tthis.getNodeByPath( [ 0 ] );     // -> \"a\"\n\t *\t\tthis.getNodeByPath( [ 1 ] );     // -> <b>\n\t *\t\tthis.getNodeByPath( [ 1, 0 ] );  // -> \"c\"\n\t *\n\t * @param {Array.<Number>} relativePath Path of the node to find, relative to this element.\n\t * @returns {module:engine/model/node~Node}\n\t */\n\tgetNodeByPath( relativePath ) {\n\t\tlet node = this;\n\n\t\tfor ( const index of relativePath ) {\n\t\t\tnode = node.getChild( index );\n\t\t}\n\n\t\treturn node;\n\t}\n\n\t/**\n\t * Converts `Element` instance to plain object and returns it. Takes care of converting all of this element's children.\n\t *\n\t * @returns {Object} `Element` instance converted to plain object.\n\t */\n\ttoJSON() {\n\t\tlet json = super.toJSON();\n\n\t\tjson.name = this.name;\n\n\t\tif ( this._children.length > 0 ) {\n\t\t\tjson.children = [];\n\n\t\t\tfor ( let node of this._children ) {\n\t\t\t\tjson.children.push( node.toJSON() );\n\t\t\t}\n\t\t}\n\n\t\treturn json;\n\t}\n\n\t/**\n\t * Creates an `Element` instance from given plain object (i.e. parsed JSON string).\n\t * Converts `Element` children to proper nodes.\n\t *\n\t * @param {Object} json Plain object to be converted to `Element`.\n\t * @returns {module:engine/model/element~Element} `Element` instance created using given plain object.\n\t */\n\tstatic fromJSON( json ) {\n\t\tlet children = null;\n\n\t\tif ( json.children ) {\n\t\t\tchildren = [];\n\n\t\t\tfor ( let child of json.children ) {\n\t\t\t\tif ( child.name ) {\n\t\t\t\t\t// If child has name property, it is an Element.\n\t\t\t\t\tchildren.push( Element.fromJSON( child ) );\n\t\t\t\t} else {\n\t\t\t\t\t// Otherwise, it is a Text node.\n\t\t\t\t\tchildren.push( Text.fromJSON( child ) );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn new Element( json.name, json.attributes, children );\n\t}\n}\n\n// Converts strings to Text and non-iterables to arrays.\n//\n// @param {String|module:engine/model/node~Node|Iterable.<String|module:engine/model/node~Node>}\n// @return {Iterable.<module:engine/model/node~Node>}\nfunction normalize( nodes ) {\n\t// Separate condition because string is iterable.\n\tif ( typeof nodes == 'string' ) {\n\t\treturn [ new Text( nodes ) ];\n\t}\n\n\tif ( !isIterable( nodes ) ) {\n\t\tnodes = [ nodes ];\n\t}\n\n\t// Array.from to enable .map() on non-arrays.\n\treturn Array.from( nodes ).map( ( node ) => typeof node == 'string' ? new Text( node ) : node );\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/element.js\n// module id = 5\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/template\n */\n\n/* global document */\n\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\nimport EmitterMixin from '@ckeditor/ckeditor5-utils/src/emittermixin';\nimport Collection from '@ckeditor/ckeditor5-utils/src/collection';\nimport View from './view';\nimport ViewCollection from './viewcollection';\nimport cloneDeepWith from '@ckeditor/ckeditor5-utils/src/lib/lodash/cloneDeepWith';\nimport isObject from '@ckeditor/ckeditor5-utils/src/lib/lodash/isObject';\nimport log from '@ckeditor/ckeditor5-utils/src/log';\n\nconst xhtmlNs = 'http://www.w3.org/1999/xhtml';\n\n/**\n * A basic Template class. It renders DOM HTMLElement or Text from {@link module:ui/template~TemplateDefinition} and supports\n * element attributes, children, bindings to {@link module:utils/observablemixin~ObservableMixin} instances and DOM events\n * propagation. For example:\n *\n *\t\tnew Template( {\n *\t\t\ttag: 'p',\n *\t\t\tattributes: {\n *\t\t\t\tclass: 'foo',\n *\t\t\t\tstyle: {\n *\t\t\t\t\tbackgroundColor: 'yellow'\n *\t\t\t\t}\n *\t\t\t},\n *\t\t\tchildren: [\n *\t\t\t\t'A paragraph.'\n *\t\t\t]\n *\t\t} ).render();\n *\n * will render the following HTMLElement:\n *\n *\t\t<p class=\"foo\" style=\"background-color: yellow;\">A paragraph.</p>\n *\n * See {@link module:ui/template~TemplateDefinition} to know more about templates and complex template definitions.\n *\n* @mixes module:utils/emittermixin~EmitterMixin\n */\nexport default class Template {\n\t/**\n\t * Creates an instance of the {@link ~Template} class.\n\t *\n\t * @param {module:ui/template~TemplateDefinition} def The definition of the template.\n\t */\n\tconstructor( def ) {\n\t\tObject.assign( this, normalize( clone( def ) ) );\n\n\t\t/**\n\t\t * Indicates whether this particular Template instance has been\n\t\t * {@link #render rendered}.\n\t\t *\n\t\t * @readonly\n\t\t * @protected\n\t\t * @member {Boolean}\n\t\t */\n\t\tthis._isRendered = false;\n\n\t\t/**\n\t\t * Tag of this template, i.e. `div`, indicating that the instance will render\n\t\t * to an HTMLElement.\n\t\t *\n\t\t * @member {String} #tag\n\t\t */\n\n\t\t/**\n\t\t * Text of this template, indicating that the instance will render to a DOM Text.\n\t\t *\n\t\t * @member {Array.<String|module:ui/template~TemplateValueSchema>} #text\n\t\t */\n\n\t\t/**\n\t\t * Attributes of this template, i.e. `{ id: [ 'ck-id' ] }`, corresponding with\n\t\t * HTML attributes on HTMLElement.\n\t\t *\n\t\t * Note: Only when {@link #tag} is defined.\n\t\t *\n\t\t * @member {Object} #attributes\n\t\t */\n\n\t\t/**\n\t\t * Children of this template; sub–templates. Each one is an independent\n\t\t * instance of {@link ~Template}.\n\t\t *\n\t\t * Note: Only when {@link #tag} is defined.\n\t\t *\n\t\t * @member {module:utils/collection~Collection.<module:ui/template~Template>} #children\n\t\t */\n\n\t\t/**\n\t\t * DOM event listeners of this template.\n\t\t *\n\t\t * @member {Object} #eventListeners\n\t\t */\n\n\t\t/**\n\t\t * Data used by {@link #revert} method to restore a node\n\t\t * to its original state.\n\t\t *\n\t\t * See: {@link #apply}.\n\t\t *\n\t\t * @readonly\n\t\t * @protected\n\t\t * @member {module:ui/template~RenderData}\n\t\t */\n\t\tthis._revertData = null;\n\t}\n\n\t/**\n\t * Renders a DOM Node (`HTMLElement` or `Text`) out of the template.\n\t *\n\t * @see #apply\n\t *\n\t * @returns {HTMLElement|Text}\n\t */\n\trender() {\n\t\tconst node = this._renderNode( {\n\t\t\tintoFragment: true\n\t\t} );\n\n\t\tthis._isRendered = true;\n\n\t\treturn node;\n\t}\n\n\t/**\n\t * Applies the template to an existing DOM Node, either `HTMLElement` or `Text`.\n\t *\n\t * **Note:** No new DOM nodes (HTMLElement or Text) will be created. Applying extends attributes\n\t * ({@link module:ui/template~TemplateDefinition attributes}) and listeners ({@link module:ui/template~TemplateDefinition on}) only.\n\t *\n\t * **Note:** Existing \"class\" and \"style\" attributes are extended when a template\n\t * is applied to a Node, while other attributes and `textContent` are overridden.\n\t *\n\t * **Note:** The process of applying a template can be easily reverted using\n\t * {@link module:ui/template~Template#revert} method.\n\t *\n\t *\t\tconst element = document.createElement( 'div' );\n\t *\t\tconst bind = Template.bind( observableInstance, emitterInstance );\n\t *\n\t *\t\tnew Template( {\n\t *\t\t\tattrs: {\n\t *\t\t\t\tid: 'first-div',\n\t *\t\t\t\tclass: bind.to( 'divClass' )\n\t *\t\t\t},\n\t *\t\t\ton: {\n\t *\t\t\t\tclick: bind( 'elementClicked' ) // Will be fired by the observableInstance.\n\t *\t\t\t}\n\t *\t\t\tchildren: [\n\t *\t\t\t\t'Div text.'\n\t *\t\t\t]\n\t *\t\t} ).apply( element );\n\t *\n\t *\t\telement.outerHTML == \"<div id=\"first-div\" class=\"my-div\">Div text.</div>\"\n\t *\n\t * @see module:ui/template~Template#render\n\t * @see module:ui/template~Template#revert\n\t * @param {Node} node Root node for the template to apply.\n\t */\n\tapply( node ) {\n\t\tthis._revertData = getEmptyRevertData();\n\n\t\tthis._renderNode( {\n\t\t\tnode: node,\n\t\t\tisApplying: true,\n\t\t\trevertData: this._revertData\n\t\t} );\n\n\t\treturn node;\n\t}\n\n\t/**\n\t * Reverts a template {@link module:ui/template~Template#apply applied} to a DOM Node.\n\t *\n\t * @param {Node} node Root node for the template to revert. In most cases, it's the same node\n\t * that {@link module:ui/template~Template#apply} has used.\n\t */\n\trevert( node ) {\n\t\tif ( !this._revertData ) {\n\t\t\t/**\n\t\t\t * Attempting reverting a template which has not been applied yet.\n\t\t\t *\n\t\t\t * @error ui-template-revert-not-applied\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'ui-template-revert-not-applied: Attempting reverting a template which has not been applied yet.' );\n\t\t}\n\n\t\tthis._revertTemplateFromNode( node, this._revertData );\n\t}\n\n\t/**\n\t * An entry point to the interface which allows binding DOM nodes to {@link module:utils/observablemixin~ObservableMixin}.\n\t * There are two types of bindings:\n\t *\n\t * * `HTMLElement` attributes or Text Node `textContent` can be synchronized with {@link module:utils/observablemixin~ObservableMixin}\n\t * instance attributes. See {@link module:ui/template~BindChain#to} and {@link module:ui/template~BindChain#if}.\n\t *\n\t * * DOM events fired on `HTMLElement` can be propagated through {@link module:utils/observablemixin~ObservableMixin}.\n\t * See {@link module:ui/template~BindChain#to}.\n\t *\n\t * @param {module:utils/observablemixin~ObservableMixin} observable An instance of ObservableMixin class.\n\t * @param {module:utils/emittermixin~EmitterMixin} emitter An instance of `Emitter` class. It listens\n\t * to `observable` attribute changes and DOM Events, depending on the binding. Usually {@link module:ui/view~View} instance.\n\t * @returns {module:ui/template~BindChain}\n\t */\n\tstatic bind( observable, emitter ) {\n\t\treturn {\n\t\t\tto( eventNameOrFunctionOrAttribute, callback ) {\n\t\t\t\treturn new TemplateToBinding( {\n\t\t\t\t\teventNameOrFunction: eventNameOrFunctionOrAttribute,\n\t\t\t\t\tattribute: eventNameOrFunctionOrAttribute,\n\t\t\t\t\tobservable, emitter, callback\n\t\t\t\t} );\n\t\t\t},\n\n\t\t\tif( attribute, valueIfTrue, callback ) {\n\t\t\t\treturn new TemplateIfBinding( {\n\t\t\t\t\tobservable, emitter, attribute, valueIfTrue, callback\n\t\t\t\t} );\n\t\t\t}\n\t\t};\n\t}\n\n\t/**\n\t * Extends {@link module:ui/template~Template} instance with additional content from {@link module:ui/template~TemplateDefinition}.\n\t *\n\t *\t\tconst bind = Template.bind( observable, emitterInstance );\n\t *\t\tconst instance = new Template( {\n\t *\t\t\ttag: 'p',\n\t *\t\t\tattributes: {\n\t *\t\t\t\tclass: 'a',\n\t *\t\t\t\tdata-x: bind.to( 'foo' )\n\t *\t\t\t},\n\t *\t\t\tchildren: [\n\t *\t\t\t\t{\n\t *\t\t\t\t\ttag: 'span',\n\t *\t\t\t\t\tattributes: {\n\t *\t\t\t\t\t\tclass: 'b'\n\t *\t\t\t\t\t},\n\t *\t\t\t\t\tchildren: [\n\t *\t\t\t\t\t\t'Span'\n\t *\t\t\t\t\t]\n\t *\t\t\t\t}\n\t *\t\t\t]\n\t *\t\t } );\n\t *\n\t *\t\t// Instance-level extension.\n\t *\t\tTemplate.extend( instance, {\n\t *\t\t\tattributes: {\n\t *\t\t\t\tclass: 'b',\n\t *\t\t\t\tdata-x: bind.to( 'bar' )\n\t *\t\t\t},\n\t *\t\t\tchildren: [\n\t *\t\t\t\t{\n\t *\t\t\t\t\tattributes: {\n\t *\t\t\t\t\t\tclass: 'c'\n\t *\t\t\t\t\t}\n\t *\t\t\t\t}\n\t *\t\t\t]\n\t *\t\t} );\n\t *\n\t *\t\t// Child extension.\n\t *\t\tTemplate.extend( instance.children.get( 0 ), {\n\t *\t\t\tattributes: {\n\t *\t\t\t\tclass: 'd'\n\t *\t\t\t}\n\t *\t\t} );\n\t *\n\t * the `instance.render().outerHTML` is\n\t *\n\t *\t\t<p class=\"a b\" data-x=\"{ observable.foo } { observable.bar }\">\n\t *\t\t\t<span class=\"b c d\">Span</span>\n\t *\t\t</p>\n\t *\n\t * @param {module:ui/template~Template} template Existing Template instance to be extended.\n\t * @param {module:ui/template~TemplateDefinition} def An extension to existing an template instance.\n\t */\n\tstatic extend( template, def ) {\n\t\tif ( template._isRendered ) {\n\t\t\t/**\n\t\t\t * Extending a template after rendering may not work as expected. To make sure\n\t\t\t * the {@link #extend extending} works for the rendered element, perform it\n\t\t\t * before {@link #render} is called.\n\t\t\t *\n\t\t\t * @error template-extend-render\n\t\t\t */\n\t\t\tlog.warn( 'template-extend-render: Attempting to extend a template which has already been rendered.' );\n\t\t}\n\n\t\textendTemplate( template, normalize( clone( def ) ) );\n\t}\n\n\t/**\n\t * Renders a DOM Node (either `HTMLElement` or `Text`) out of the template.\n\t *\n\t * @protected\n\t * @param {module:ui/template~RenderData} data Rendering data.\n\t */\n\t_renderNode( data ) {\n\t\tlet isInvalid;\n\n\t\tif ( data.node ) {\n\t\t\t// When applying, a definition cannot have \"tag\" and \"text\" at the same time.\n\t\t\tisInvalid = this.tag && this.text;\n\t\t} else {\n\t\t\t// When rendering, a definition must have either \"tag\" or \"text\": XOR( this.tag, this.text ).\n\t\t\tisInvalid = this.tag ? this.text : !this.text;\n\t\t}\n\n\t\tif ( isInvalid ) {\n\t\t\t/**\n\t\t\t * Node definition cannot have \"tag\" and \"text\" properties at the same time.\n\t\t\t * Node definition must have either \"tag\" or \"text\" when rendering new Node.\n\t\t\t *\n\t\t\t * @error ui-template-wrong-syntax\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'ui-template-wrong-syntax: Node definition must have either \"tag\" or \"text\" when rendering new Node.' );\n\t\t}\n\n\t\tif ( this.text ) {\n\t\t\treturn this._renderText( data );\n\t\t} else {\n\t\t\treturn this._renderElement( data );\n\t\t}\n\t}\n\n\t/**\n\t * Renders an `HTMLElement` out of the template.\n\t *\n\t * @protected\n\t * @param {module:ui/template~RenderData} data Rendering data.\n\t */\n\t_renderElement( data ) {\n\t\tlet node = data.node;\n\n\t\tif ( !node ) {\n\t\t\tnode = data.node = document.createElementNS( this.ns || xhtmlNs, this.tag );\n\t\t}\n\n\t\tthis._renderAttributes( data );\n\t\tthis._renderElementChildren( data );\n\t\tthis._setUpListeners( data );\n\n\t\treturn node;\n\t}\n\n\t/**\n\t * Renders a `Text` node out of {@link module:ui/template~Template#text}.\n\t *\n\t * @protected\n\t * @param {module:ui/template~RenderData} data Rendering data.\n\t */\n\t_renderText( data ) {\n\t\tlet node = data.node;\n\n\t\t// Save the original textContent to revert it in #revert().\n\t\tif ( node ) {\n\t\t\tdata.revertData.text = node.textContent;\n\t\t} else {\n\t\t\tnode = data.node = document.createTextNode( '' );\n\t\t}\n\n\t\t// Check if this Text Node is bound to Observable. Cases:\n\t\t//\n\t\t//\t\ttext: [ Template.bind( ... ).to( ... ) ]\n\t\t//\n\t\t//\t\ttext: [\n\t\t//\t\t\t'foo',\n\t\t//\t\t\tTemplate.bind( ... ).to( ... ),\n\t\t//\t\t\t...\n\t\t//\t\t]\n\t\t//\n\t\tif ( hasTemplateBinding( this.text ) ) {\n\t\t\tthis._bindToObservable( {\n\t\t\t\tschema: this.text,\n\t\t\t\tupdater: getTextUpdater( node ),\n\t\t\t\tdata\n\t\t\t} );\n\t\t}\n\t\t// Simply set text. Cases:\n\t\t//\n\t\t//\t\ttext: [ 'all', 'are', 'static' ]\n\t\t//\n\t\t//\t\ttext: [ 'foo' ]\n\t\t//\n\t\telse {\n\t\t\tnode.textContent = this.text.join( '' );\n\t\t}\n\n\t\treturn node;\n\t}\n\n\t/**\n\t * Renders an `HTMLElement` attributes out of {@link module:ui/template~Template#attributes}.\n\t *\n\t * @protected\n\t * @param {module:ui/template~RenderData} data Rendering data.\n\t */\n\t_renderAttributes( data ) {\n\t\tlet attrName, attrValue, domAttrValue, attrNs;\n\n\t\tif ( !this.attributes ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst node = data.node;\n\t\tconst revertData = data.revertData;\n\n\t\tfor ( attrName in this.attributes ) {\n\t\t\t// Current attribute value in DOM.\n\t\t\tdomAttrValue = node.getAttribute( attrName );\n\n\t\t\t// The value to be set.\n\t\t\tattrValue = this.attributes[ attrName ];\n\n\t\t\t// Save revert data.\n\t\t\tif ( revertData ) {\n\t\t\t\trevertData.attributes[ attrName ] = domAttrValue;\n\t\t\t}\n\n\t\t\t// Detect custom namespace:\n\t\t\t//\n\t\t\t//\t\tclass: {\n\t\t\t//\t\t\tns: 'abc',\n\t\t\t//\t\t\tvalue: Template.bind( ... ).to( ... )\n\t\t\t//\t\t}\n\t\t\t//\n\t\t\tattrNs = ( isObject( attrValue[ 0 ] ) && attrValue[ 0 ].ns ) ? attrValue[ 0 ].ns : null;\n\n\t\t\t// Activate binding if one is found. Cases:\n\t\t\t//\n\t\t\t//\t\tclass: [\n\t\t\t//\t\t\tTemplate.bind( ... ).to( ... )\n\t\t\t//\t\t]\n\t\t\t//\n\t\t\t//\t\tclass: [\n\t\t\t//\t\t\t'bar',\n\t\t\t//\t\t\tTemplate.bind( ... ).to( ... ),\n\t\t\t//\t\t\t'baz'\n\t\t\t//\t\t]\n\t\t\t//\n\t\t\t//\t\tclass: {\n\t\t\t//\t\t\tns: 'abc',\n\t\t\t//\t\t\tvalue: Template.bind( ... ).to( ... )\n\t\t\t//\t\t}\n\t\t\t//\n\t\t\tif ( hasTemplateBinding( attrValue ) ) {\n\t\t\t\t// Normalize attributes with additional data like namespace:\n\t\t\t\t//\n\t\t\t\t//\t\tclass: {\n\t\t\t\t//\t\t\tns: 'abc',\n\t\t\t\t//\t\t\tvalue: [ ... ]\n\t\t\t\t//\t\t}\n\t\t\t\t//\n\t\t\t\tconst valueToBind = attrNs ? attrValue[ 0 ].value : attrValue;\n\n\t\t\t\t// Extend the original value of attributes like \"style\" and \"class\",\n\t\t\t\t// don't override them.\n\t\t\t\tif ( revertData && shouldExtend( attrName ) ) {\n\t\t\t\t\tvalueToBind.unshift( domAttrValue );\n\t\t\t\t}\n\n\t\t\t\tthis._bindToObservable( {\n\t\t\t\t\tschema: valueToBind,\n\t\t\t\t\tupdater: getAttributeUpdater( node, attrName, attrNs ),\n\t\t\t\t\tdata\n\t\t\t\t} );\n\t\t\t}\n\n\t\t\t// Style attribute could be an Object so it needs to be parsed in a specific way.\n\t\t\t//\n\t\t\t//\t\tstyle: {\n\t\t\t//\t\t\twidth: '100px',\n\t\t\t//\t\t\theight: Template.bind( ... ).to( ... )\n\t\t\t//\t\t}\n\t\t\t//\n\t\t\telse if ( attrName == 'style' && typeof attrValue[ 0 ] !== 'string' ) {\n\t\t\t\tthis._renderStyleAttribute( attrValue[ 0 ], data );\n\t\t\t}\n\n\t\t\t// Otherwise simply set the static attribute:\n\t\t\t//\n\t\t\t//\t\tclass: [ 'foo' ]\n\t\t\t//\n\t\t\t//\t\tclass: [ 'all', 'are', 'static' ]\n\t\t\t//\n\t\t\t//\t\tclass: [\n\t\t\t//\t\t\t{\n\t\t\t//\t\t\t\tns: 'abc',\n\t\t\t//\t\t\t\tvalue: [ 'foo' ]\n\t\t\t//\t\t\t}\n\t\t\t//\t\t]\n\t\t\t//\n\t\t\telse {\n\t\t\t\t// Extend the original value of attributes like \"style\" and \"class\",\n\t\t\t\t// don't override them.\n\t\t\t\tif ( revertData && domAttrValue && shouldExtend( attrName ) ) {\n\t\t\t\t\tattrValue.unshift( domAttrValue );\n\t\t\t\t}\n\n\t\t\t\tattrValue = attrValue\n\t\t\t\t\t// Retrieve \"values\" from:\n\t\t\t\t\t//\n\t\t\t\t\t//\t\tclass: [\n\t\t\t\t\t//\t\t\t{\n\t\t\t\t\t//\t\t\t\tns: 'abc',\n\t\t\t\t\t//\t\t\t\tvalue: [ ... ]\n\t\t\t\t\t//\t\t\t}\n\t\t\t\t\t//\t\t]\n\t\t\t\t\t//\n\t\t\t\t\t.map( val => val ? ( val.value || val ) : val )\n\t\t\t\t\t// Flatten the array.\n\t\t\t\t\t.reduce( ( prev, next ) => prev.concat( next ), [] )\n\t\t\t\t\t// Convert into string.\n\t\t\t\t\t.reduce( arrayValueReducer, '' );\n\n\t\t\t\tif ( !isFalsy( attrValue ) ) {\n\t\t\t\t\tnode.setAttributeNS( attrNs, attrName, attrValue );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Renders `style` attribute of an `HTMLElement` based on {@link module:ui/template~Template#attributes}.\n\t *\n\t * Style attribute is an {Object} with static values:\n\t *\n\t *\t\tattributes: {\n\t *\t\t\tstyle: {\n\t *\t\t\t\tcolor: 'red'\n\t *\t\t\t}\n\t *\t\t}\n\t *\n\t * or values bound to {@link module:ui/model~Model} properties:\n\t *\n\t *\t\tattributes: {\n\t *\t\t\tstyle: {\n\t *\t\t\t\tcolor: bind.to( ... )\n\t *\t\t\t}\n\t *\t\t}\n\t *\n\t * Note: `style` attribute is rendered without setting the namespace. It does not seem to be\n\t * needed.\n\t *\n\t * @private\n\t * @param {Object} styles Styles located in `attributes.style` of {@link module:ui/template~TemplateDefinition}.\n\t * @param {module:ui/template~RenderData} data Rendering data.\n\t */\n\t_renderStyleAttribute( styles, data ) {\n\t\tconst node = data.node;\n\n\t\tfor ( let styleName in styles ) {\n\t\t\tconst styleValue = styles[ styleName ];\n\n\t\t\t// Cases:\n\t\t\t//\n\t\t\t//\t\tstyle: {\n\t\t\t//\t\t\tcolor: bind.to( 'attribute' )\n\t\t\t//\t\t}\n\t\t\t//\n\t\t\tif ( hasTemplateBinding( styleValue ) ) {\n\t\t\t\tthis._bindToObservable( {\n\t\t\t\t\tschema: [ styleValue ],\n\t\t\t\t\tupdater: getStyleUpdater( node, styleName ),\n\t\t\t\t\tdata\n\t\t\t\t} );\n\t\t\t}\n\n\t\t\t// Cases:\n\t\t\t//\n\t\t\t//\t\tstyle: {\n\t\t\t//\t\t\tcolor: 'red'\n\t\t\t//\t\t}\n\t\t\t//\n\t\t\telse {\n\t\t\t\tnode.style[ styleName ] = styleValue;\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Recursively renders `HTMLElement` children from {@link module:ui/template~Template#children}.\n\t *\n\t * @protected\n\t * @param {module:ui/template~RenderData} data Rendering data.\n\t */\n\t_renderElementChildren( data ) {\n\t\tconst node = data.node;\n\t\tconst container = data.intoFragment ? document.createDocumentFragment() : node;\n\t\tconst isApplying = data.isApplying;\n\t\tlet childIndex = 0;\n\n\t\tfor ( let child of this.children ) {\n\t\t\tif ( isViewCollection( child ) ) {\n\t\t\t\tif ( !isApplying ) {\n\t\t\t\t\tchild.setParent( node );\n\n\t\t\t\t\tfor ( let view of child ) {\n\t\t\t\t\t\tcontainer.appendChild( view.element );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} else if ( isView( child ) ) {\n\t\t\t\tif ( !isApplying ) {\n\t\t\t\t\tcontainer.appendChild( child.element );\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\tif ( isApplying ) {\n\t\t\t\t\tconst revertData = data.revertData;\n\t\t\t\t\tconst childRevertData = getEmptyRevertData();\n\n\t\t\t\t\trevertData.children.push( childRevertData );\n\n\t\t\t\t\tchild._renderNode( {\n\t\t\t\t\t\tnode: container.childNodes[ childIndex++ ],\n\t\t\t\t\t\tisApplying: true,\n\t\t\t\t\t\trevertData: childRevertData\n\t\t\t\t\t} );\n\t\t\t\t} else {\n\t\t\t\t\tcontainer.appendChild( child.render() );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\tif ( data.intoFragment ) {\n\t\t\tnode.appendChild( container );\n\t\t}\n\t}\n\n\t/**\n\t * Activates `on` listeners in the {@link module:ui/template~TemplateDefinition}\n\t * on a passed `HTMLElement`.\n\t *\n\t * @protected\n\t * @param {module:ui/template~RenderData} data Rendering data.\n\t */\n\t_setUpListeners( data ) {\n\t\tif ( !this.eventListeners ) {\n\t\t\treturn;\n\t\t}\n\n\t\tfor ( let key in this.eventListeners ) {\n\t\t\tconst revertBindings = this.eventListeners[ key ].map( schemaItem => {\n\t\t\t\tconst [ domEvtName, domSelector ] = key.split( '@' );\n\n\t\t\t\treturn schemaItem.activateDomEventListener( domEvtName, domSelector, data );\n\t\t\t} );\n\n\t\t\tif ( data.revertData ) {\n\t\t\t\tdata.revertData.bindings.push( revertBindings );\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * For given {@link module:ui/template~TemplateValueSchema} containing {@link module:ui/template~TemplateBinding} it activates the\n\t * binding and sets its initial value.\n\t *\n\t * Note: {@link module:ui/template~TemplateValueSchema} can be for HTMLElement attributes or Text Node `textContent`.\n\t *\n\t * @protected\n\t * @param {Object} options Binding options.\n\t * @param {module:ui/template~TemplateValueSchema} options.schema\n\t * @param {Function} options.updater A function which updates DOM (like attribute or text).\n\t * @param {module:ui/template~RenderData} options.data Rendering data.\n\t */\n\t_bindToObservable( { schema, updater, data } ) {\n\t\tconst revertData = data.revertData;\n\n\t\t// Set initial values.\n\t\tsyncValueSchemaValue( schema, updater, data );\n\n\t\tconst revertBindings = schema\n\t\t\t// Filter \"falsy\" (false, undefined, null, '') value schema components out.\n\t\t\t.filter( item => !isFalsy( item ) )\n\t\t\t// Filter inactive bindings from schema, like static strings ('foo'), numbers (42), etc.\n\t\t\t.filter( item => item.observable )\n\t\t\t// Once only the actual binding are left, let the emitter listen to observable change:attribute event.\n\t\t\t// TODO: Reduce the number of listeners attached as many bindings may listen\n\t\t\t// to the same observable attribute.\n\t\t\t.map( templateBinding => templateBinding.activateAttributeListener( schema, updater, data ) );\n\n\t\tif ( revertData ) {\n\t\t\trevertData.bindings.push( revertBindings );\n\t\t}\n\t}\n\n\t/**\n\t * Reverts {@link module:ui/template~RenderData#revertData template data} from a node to\n\t * return it to the the original state.\n\t *\n\t * @protected\n\t * @param {HTMLElement|Text} node A node to be reverted.\n\t * @param {module:ui/template~RenderData#revertData} revertData Stores information about\n\t * what changes have been made by {@link #apply} to the node.\n\t */\n\t_revertTemplateFromNode( node, revertData ) {\n\t\tfor ( let binding of revertData.bindings ) {\n\t\t\t// Each binding may consist of several observable+observable#attribute.\n\t\t\t// like the following has 2:\n\t\t\t//\n\t\t\t//\t\tclass: [\n\t\t\t//\t\t\t'x',\n\t\t\t//\t\t\tbind.to( 'foo' ),\n\t\t\t//\t\t\t'y',\n\t\t\t//\t\t\tbind.to( 'bar' )\n\t\t\t//\t\t]\n\t\t\t//\n\t\t\tfor ( let revertBinding of binding ) {\n\t\t\t\trevertBinding();\n\t\t\t}\n\t\t}\n\n\t\tif ( revertData.text ) {\n\t\t\tnode.textContent = revertData.text;\n\n\t\t\treturn;\n\t\t}\n\n\t\tfor ( let attrName in revertData.attributes ) {\n\t\t\tconst attrValue = revertData.attributes[ attrName ];\n\n\t\t\t// When the attribute has **not** been set before #apply().\n\t\t\tif ( attrValue === null ) {\n\t\t\t\tnode.removeAttribute( attrName );\n\t\t\t} else {\n\t\t\t\tnode.setAttribute( attrName, attrValue );\n\t\t\t}\n\t\t}\n\n\t\tfor ( let i = 0; i < revertData.children.length; ++i ) {\n\t\t\tthis._revertTemplateFromNode( node.childNodes[ i ], revertData.children[ i ] );\n\t\t}\n\t}\n}\n\nmix( Template, EmitterMixin );\n\n/**\n * Describes a binding created by {@link module:ui/template~Template.bind} interface.\n *\n * @protected\n */\nexport class TemplateBinding {\n\t/**\n\t * Creates an instance of the {@link module:ui/template~TemplateBinding} class.\n\t *\n\t * @param {module:ui/template~TemplateDefinition} def The definition of the binding.\n\t */\n\tconstructor( def ) {\n\t\tObject.assign( this, def );\n\n\t\t/**\n\t\t * An observable instance of the binding. It provides the attribute\n\t\t * with the value or passes the event when a corresponding DOM event is fired.\n\t\t *\n\t\t * @member {module:utils/observablemixin~ObservableMixin} module:ui/template~TemplateBinding#observable\n\t\t */\n\n\t\t/**\n\t\t * An {@link module:utils/emittermixin~EmitterMixin} instance used by the binding\n\t\t * to (either):\n\t\t *\n\t\t * * listen to the attribute change in the {@link module:ui/template~TemplateBinding#observable},\n\t\t * * listen to the event in the DOM.\n\t\t *\n\t\t * @member {module:utils/emittermixin~EmitterMixin} module:ui/template~TemplateBinding#emitter\n\t\t */\n\n\t\t/**\n\t\t * The name of the attribute of {@link module:ui/template~TemplateBinding#observable} which is observed.\n\t\t *\n\t\t * @member {String} module:ui/template~TemplateBinding#attribute\n\t\t */\n\n\t\t/**\n\t\t * A custom function to process the value of {@link module:ui/template~TemplateBinding#attribute}.\n\t\t *\n\t\t * @member {Function} [module:ui/template~TemplateBinding#callback]\n\t\t */\n\t}\n\n\t/**\n\t * Returns the value of the binding, which is the value of {@link module:ui/template~TemplateBinding#attribute} in\n\t * {@link module:ui/template~TemplateBinding#observable}.\n\t *\n\t * @param {Node} [node] A native DOM node, passed to the custom {@link module:ui/template~TemplateBinding#callback}.\n\t * @returns {*} The value of {@link module:ui/template~TemplateBinding#attribute} in {@link module:ui/template~TemplateBinding#observable}.\n\t */\n\tgetValue( node ) {\n\t\tconst value = this.observable[ this.attribute ];\n\n\t\treturn this.callback ? this.callback( value, node ) : value;\n\t}\n\n\t/**\n\t * Activates the listener for the changes of {@link module:ui/template~TemplateBinding#attribute} in\n\t * {@link module:ui/template~TemplateBinding#observable}, which then updates the DOM with the aggregated\n\t * value of {@link module:ui/template~TemplateValueSchema}.\n\t *\n\t * For instance, the `class` attribute of the `Template` element can be be bound to\n\t * the observable `foo` attribute in `ObservableMixin` instance.\n\t *\n\t * @param {module:ui/template~TemplateValueSchema} schema A full schema to generate an attribute or text in DOM.\n\t * @param {Function} updater A DOM updater function used to update native DOM attribute or text.\n\t * @param {module:ui/template~RenderData} data Rendering data.\n\t * @returns {Function} A function to sever the listener binding.\n\t */\n\tactivateAttributeListener( schema, updater, data ) {\n\t\tconst callback = () => syncValueSchemaValue( schema, updater, data );\n\n\t\tthis.emitter.listenTo( this.observable, 'change:' + this.attribute, callback );\n\n\t\t// Allows revert of the listener.\n\t\treturn () => {\n\t\t\tthis.emitter.stopListening( this.observable, 'change:' + this.attribute, callback );\n\t\t};\n\t}\n}\n\n/**\n * Describes either:\n *\n * * a binding to {@link module:utils/observablemixin~ObservableMixin}\n * * or a native DOM event binding\n *\n * created by {@link module:ui/template~BindChain#to} method.\n *\n * @protected\n */\nexport class TemplateToBinding extends TemplateBinding {\n\t/**\n\t * Activates the listener for the native DOM event, which when fired, is propagated by\n\t * the {@link module:ui/template~TemplateBinding#emitter}.\n\t *\n\t * @param {String} domEvtName A name of the native DOM event.\n\t * @param {String} domSelector A selector in DOM to filter delegated events.\n\t * @param {module:ui/template~RenderData} data Rendering data.\n\t * @returns {Function} A function to sever the listener binding.\n\t */\n\tactivateDomEventListener( domEvtName, domSelector, data ) {\n\t\tconst callback = ( evt, domEvt ) => {\n\t\t\tif ( !domSelector || domEvt.target.matches( domSelector ) ) {\n\t\t\t\tif ( typeof this.eventNameOrFunction == 'function' ) {\n\t\t\t\t\tthis.eventNameOrFunction( domEvt );\n\t\t\t\t} else {\n\t\t\t\t\tthis.observable.fire( this.eventNameOrFunction, domEvt );\n\t\t\t\t}\n\t\t\t}\n\t\t};\n\n\t\tthis.emitter.listenTo( data.node, domEvtName, callback );\n\n\t\t// Allows revert of the listener.\n\t\treturn () => {\n\t\t\tthis.emitter.stopListening( data.node, domEvtName, callback );\n\t\t};\n\t}\n}\n\n/**\n * Describes a binding to {@link module:utils/observablemixin~ObservableMixin} created by {@link module:ui/template~BindChain#if}\n * method.\n *\n * @protected\n */\nexport class TemplateIfBinding extends TemplateBinding {\n\t/**\n\t * @inheritDoc\n\t */\n\tgetValue( node ) {\n\t\tconst value = super.getValue( node );\n\n\t\treturn isFalsy( value ) ? false : ( this.valueIfTrue || true );\n\t}\n\n\t/**\n\t * The value of the DOM attribute/text to be set if the {@link module:ui/template~TemplateBinding#attribute} in\n\t * {@link module:ui/template~TemplateBinding#observable} is `true`.\n\t *\n\t * @member {String} [module:ui/template~TemplateIfBinding#valueIfTrue]\n\t */\n}\n\n// Checks whether given {@link module:ui/template~TemplateValueSchema} contains a\n// {@link module:ui/template~TemplateBinding}.\n//\n// @param {module:ui/template~TemplateValueSchema} schema\n// @returns {Boolean}\nfunction hasTemplateBinding( schema ) {\n\tif ( !schema ) {\n\t\treturn false;\n\t}\n\n\t// Normalize attributes with additional data like namespace:\n\t//\n\t//\t\tclass: {\n\t//\t\t\tns: 'abc',\n\t//\t\t\tvalue: [ ... ]\n\t//\t\t}\n\t//\n\tif ( schema.value ) {\n\t\tschema = schema.value;\n\t}\n\n\tif ( Array.isArray( schema ) ) {\n\t\treturn schema.some( hasTemplateBinding );\n\t} else if ( schema instanceof TemplateBinding ) {\n\t\treturn true;\n\t}\n\n\treturn false;\n}\n\n// Assembles the value using {@link module:ui/template~TemplateValueSchema} and stores it in a form of\n// an Array. Each entry of an Array corresponds to one of {@link module:ui/template~TemplateValueSchema}\n// items.\n//\n// @param {module:ui/template~TemplateValueSchema} schema\n// @param {Node} node DOM Node updated when {@link module:utils/observablemixin~ObservableMixin} changes.\n// @return {Array}\nfunction getValueSchemaValue( schema, node ) {\n\treturn schema.map( schemaItem => {\n\t\t// Process {@link module:ui/template~TemplateBinding} bindings.\n\t\tif ( schemaItem instanceof TemplateBinding ) {\n\t\t\treturn schemaItem.getValue( node );\n\t\t}\n\n\t\t// All static values like strings, numbers, and \"falsy\" values (false, null, undefined, '', etc.) just pass.\n\t\treturn schemaItem;\n\t} );\n}\n\n// A function executed each time bound Observable attribute changes, which updates DOM with a value\n// constructed from {@link module:ui/template~TemplateValueSchema}.\n//\n// @param {module:ui/template~TemplateValueSchema} schema\n// @param {Function} updater A function which updates DOM (like attribute or text).\n// @param {Node} node DOM Node updated when {@link module:utils/observablemixin~ObservableMixin} changes.\nfunction syncValueSchemaValue( schema, updater, { node } ) {\n\tlet value = getValueSchemaValue( schema, node );\n\n\t// Check if schema is a single Template.bind.if, like:\n\t//\n\t//\t\tclass: Template.bind.if( 'foo' )\n\t//\n\tif ( schema.length == 1 && schema[ 0 ] instanceof TemplateIfBinding ) {\n\t\tvalue = value[ 0 ];\n\t} else {\n\t\tvalue = value.reduce( arrayValueReducer, '' );\n\t}\n\n\tif ( isFalsy( value ) ) {\n\t\tupdater.remove();\n\t} else {\n\t\tupdater.set( value );\n\t}\n}\n\n// Returns an object consisting of `set` and `remove` functions, which\n// can be used in the context of DOM Node to set or reset `textContent`.\n// @see module:ui/view~View#_bindToObservable\n//\n// @param {Node} node DOM Node to be modified.\n// @returns {Object}\nfunction getTextUpdater( node ) {\n\treturn {\n\t\tset( value ) {\n\t\t\tnode.textContent = value;\n\t\t},\n\n\t\tremove() {\n\t\t\tnode.textContent = '';\n\t\t}\n\t};\n}\n\n// Returns an object consisting of `set` and `remove` functions, which\n// can be used in the context of DOM Node to set or reset an attribute.\n// @see module:ui/view~View#_bindToObservable\n//\n// @param {Node} node DOM Node to be modified.\n// @param {String} attrName Name of the attribute to be modified.\n// @param {String} [ns=null] Namespace to use.\n// @returns {Object}\nfunction getAttributeUpdater( el, attrName, ns ) {\n\treturn {\n\t\tset( value ) {\n\t\t\tel.setAttributeNS( ns, attrName, value );\n\t\t},\n\n\t\tremove() {\n\t\t\tel.removeAttributeNS( ns, attrName );\n\t\t}\n\t};\n}\n\n// Returns an object consisting of `set` and `remove` functions, which\n// can be used in the context of CSSStyleDeclaration to set or remove a style.\n// @see module:ui/view~View#_bindToObservable\n//\n// @param {Node} node DOM Node to be modified.\n// @param {String} styleName Name of the style to be modified.\n// @returns {Object}\nfunction getStyleUpdater( el, styleName ) {\n\treturn {\n\t\tset( value ) {\n\t\t\tel.style[ styleName ] = value;\n\t\t},\n\n\t\tremove() {\n\t\t\tel.style[ styleName ] = null;\n\t\t}\n\t};\n}\n\n// Clones definition of the template.\n//\n// @param {module:ui/template~TemplateDefinition} def\n// @returns {module:ui/template~TemplateDefinition}\nfunction clone( def ) {\n\tconst clone = cloneDeepWith( def, value => {\n\t\t// Don't clone the `Template.bind`* bindings because of the references to Observable\n\t\t// and DomEmitterMixin instances inside, which would also be traversed and cloned by greedy\n\t\t// cloneDeepWith algorithm. There's no point in cloning Observable/DomEmitterMixins\n\t\t// along with the definition.\n\t\t//\n\t\t// Don't clone Template instances if provided as a child. They're simply #render()ed\n\t\t// and nothing should interfere.\n\t\t//\n\t\t// Also don't clone View instances if provided as a child of the Template. The template\n\t\t// instance will be extracted from the View during the normalization and there's no need\n\t\t// to clone it.\n\t\tif ( value && ( value instanceof TemplateBinding || isTemplate( value ) || isView( value ) || isViewCollection( value ) ) ) {\n\t\t\treturn value;\n\t\t}\n\t} );\n\n\treturn clone;\n}\n\n// Normalizes given {@link module:ui/template~TemplateDefinition}.\n//\n// See:\n//  * {@link normalizeAttributes}\n//  * {@link normalizeListeners}\n//  * {@link normalizePlainTextDefinition}\n//  * {@link normalizeTextDefinition}\n//\n// @param {module:ui/template~TemplateDefinition} def\n// @returns {module:ui/template~TemplateDefinition} Normalized definition.\nfunction normalize( def ) {\n\tif ( typeof def == 'string' ) {\n\t\tdef = normalizePlainTextDefinition( def );\n\t} else if ( def.text ) {\n\t\tnormalizeTextDefinition( def );\n\t}\n\n\tif ( def.on ) {\n\t\tdef.eventListeners = normalizeListeners( def.on );\n\n\t\t// Template mixes EmitterMixin, so delete #on to avoid collision.\n\t\tdelete def.on;\n\t}\n\n\tif ( !def.text ) {\n\t\tif ( def.attributes ) {\n\t\t\tnormalizeAttributes( def.attributes );\n\t\t}\n\n\t\tconst children = new Collection();\n\n\t\tif ( def.children ) {\n\t\t\tif ( isViewCollection( def.children ) ) {\n\t\t\t\tchildren.add( def.children );\n\t\t\t} else {\n\t\t\t\tfor ( let child of def.children ) {\n\t\t\t\t\tif ( isTemplate( child ) || isView( child ) ) {\n\t\t\t\t\t\tchildren.add( child );\n\t\t\t\t\t} else {\n\t\t\t\t\t\tchildren.add( new Template( child ) );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\tdef.children = children;\n\t}\n\n\treturn def;\n}\n\n// Normalizes \"attributes\" section of {@link module:ui/template~TemplateDefinition}.\n//\n//\t\tattributes: {\n//\t\t\ta: 'bar',\n//\t\t\tb: {@link module:ui/template~TemplateBinding},\n//\t\t\tc: {\n//\t\t\t\tvalue: 'bar'\n//\t\t\t}\n//\t\t}\n//\n// becomes\n//\n//\t\tattributes: {\n//\t\t\ta: [ 'bar' ],\n//\t\t\tb: [ {@link module:ui/template~TemplateBinding} ],\n//\t\t\tc: {\n//\t\t\t\tvalue: [ 'bar' ]\n//\t\t\t}\n//\t\t}\n//\n// @param {Object} attrs\nfunction normalizeAttributes( attrs ) {\n\tfor ( let a in attrs ) {\n\t\tif ( attrs[ a ].value ) {\n\t\t\tattrs[ a ].value = [].concat( attrs[ a ].value );\n\t\t}\n\n\t\tarrayify( attrs, a );\n\t}\n}\n\n// Normalizes \"on\" section of {@link module:ui/template~TemplateDefinition}.\n//\n//\t\ton: {\n//\t\t\ta: 'bar',\n//\t\t\tb: {@link module:ui/template~TemplateBinding},\n//\t\t\tc: [ {@link module:ui/template~TemplateBinding}, () => { ... } ]\n//\t\t}\n//\n// becomes\n//\n//\t\ton: {\n//\t\t\ta: [ 'bar' ],\n//\t\t\tb: [ {@link module:ui/template~TemplateBinding} ],\n//\t\t\tc: [ {@link module:ui/template~TemplateBinding}, () => { ... } ]\n//\t\t}\n//\n// @param {Object} listeners\n// @returns {Object} Object containing normalized listeners.\nfunction normalizeListeners( listeners ) {\n\tfor ( let l in listeners ) {\n\t\tarrayify( listeners, l );\n\t}\n\n\treturn listeners;\n}\n\n// Normalizes \"string\" {@link module:ui/template~TemplateDefinition}.\n//\n//\t\t\"foo\"\n//\n// becomes\n//\n//\t\t{ text: [ 'foo' ] },\n//\n// @param {String} def\n// @returns {module:ui/template~TemplateDefinition} Normalized template definition.\nfunction normalizePlainTextDefinition( def ) {\n\treturn {\n\t\ttext: [ def ]\n\t};\n}\n\n// Normalizes text {@link module:ui/template~TemplateDefinition}.\n//\n//\t\tchildren: [\n//\t\t\t{ text: 'def' },\n//\t\t\t{ text: {@link module:ui/template~TemplateBinding} }\n//\t\t]\n//\n// becomes\n//\n//\t\tchildren: [\n//\t\t\t{ text: [ 'def' ] },\n//\t\t\t{ text: [ {@link module:ui/template~TemplateBinding} ] }\n//\t\t]\n//\n// @param {module:ui/template~TemplateDefinition} def\nfunction normalizeTextDefinition( def ) {\n\tif ( !Array.isArray( def.text ) ) {\n\t\tdef.text = [ def.text ];\n\t}\n}\n\n// Wraps an entry in Object in an Array, if not already one.\n//\n//\t\t{\n//\t\t\tx: 'y',\n//\t\t\ta: [ 'b' ]\n//\t\t}\n//\n// becomes\n//\n//\t\t{\n//\t\t\tx: [ 'y' ],\n//\t\t\ta: [ 'b' ]\n//\t\t}\n//\n// @param {Object} obj\n// @param {String} key\nfunction arrayify( obj, key ) {\n\tif ( !Array.isArray( obj[ key ] ) ) {\n\t\tobj[ key ] = [ obj[ key ] ];\n\t}\n}\n\n// A helper which concatenates the value avoiding unwanted\n// leading white spaces.\n//\n// @param {String} prev\n// @param {String} cur\n// @returns {String}\nfunction arrayValueReducer( prev, cur ) {\n\tif ( isFalsy( cur ) ) {\n\t\treturn prev;\n\t} else if ( isFalsy( prev ) )  {\n\t\treturn cur;\n\t} else {\n\t\treturn `${prev} ${cur}`;\n\t}\n}\n\n// Extends one object defined in the following format:\n//\n//\t\t{\n//\t\t\tkey1: [Array1],\n//\t\t\tkey2: [Array2],\n//\t\t\t...\n//\t\t\tkeyN: [ArrayN]\n//\t\t}\n//\n// with another object of the same data format.\n//\n// @param {Object} obj Base object.\n// @param {Object} ext Object extending base.\n// @returns {String}\nfunction extendObjectValueArray( obj, ext ) {\n\tfor ( let a in ext ) {\n\t\tif ( obj[ a ] ) {\n\t\t\tobj[ a ].push( ...ext[ a ] );\n\t\t} else {\n\t\t\tobj[ a ] = ext[ a ];\n\t\t}\n\t}\n}\n\n// A helper for {@link module:ui/template~Template#extend}. Recursively extends {@link module:ui/template~Template} instance\n// with content from {module:ui/template~TemplateDefinition}. See {@link module:ui/template~Template#extend} to learn more.\n//\n// @param {module:ui/template~Template} def A template instance to be extended.\n// @param {module:ui/template~TemplateDefinition} def A definition which is to extend the template instance.\nfunction extendTemplate( template, def ) {\n\tif ( def.attributes ) {\n\t\tif ( !template.attributes ) {\n\t\t\ttemplate.attributes = {};\n\t\t}\n\n\t\textendObjectValueArray( template.attributes, def.attributes );\n\t}\n\n\tif ( def.eventListeners ) {\n\t\tif ( !template.eventListeners ) {\n\t\t\ttemplate.eventListeners = {};\n\t\t}\n\n\t\textendObjectValueArray( template.eventListeners, def.eventListeners );\n\t}\n\n\tif ( def.text ) {\n\t\ttemplate.text.push( ...def.text );\n\t}\n\n\tif ( def.children && def.children.length ) {\n\t\tif ( template.children.length != def.children.length ) {\n\t\t\t/**\n\t\t\t * The number of children in extended definition does not match.\n\t\t\t *\n\t\t\t * @error ui-template-extend-children-mismatch\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'ui-template-extend-children-mismatch: The number of children in extended definition does not match.' );\n\t\t}\n\n\t\tlet childIndex = 0;\n\n\t\tfor ( let childDef of def.children ) {\n\t\t\textendTemplate( template.children.get( childIndex++ ), childDef );\n\t\t}\n\t}\n}\n\n// Checks if value is \"falsy\".\n// Note: 0 (Number) is not \"falsy\" in this context.\n//\n// @private\n// @param {*} value Value to be checked.\nfunction isFalsy( value ) {\n\treturn !value && value !== 0;\n}\n\n// Checks if the item is an instance of {@link module:ui/view~View}\n//\n// @private\n// @param {*} value Value to be checked.\nfunction isView( item ) {\n\treturn item instanceof View;\n}\n\n// Checks if the item is an instance of {@link module:ui/template~Template}\n//\n// @private\n// @param {*} value Value to be checked.\nfunction isTemplate( item ) {\n\treturn item instanceof Template;\n}\n\n// Checks if the item is an instance of {@link module:ui/viewcollection~ViewCollection}\n//\n// @private\n// @param {*} value Value to be checked.\nfunction isViewCollection( item ) {\n\treturn item instanceof ViewCollection;\n}\n\n// Creates an empty skeleton for {@link module:ui/template~Template#revert}\n// data.\n//\n// @private\nfunction getEmptyRevertData() {\n\treturn {\n\t\tchildren: [],\n\t\tbindings: [],\n\t\tattributes: {}\n\t};\n}\n\n// Checks whether an attribute should be extended when\n// {@link module:ui/template~Template#apply} is called.\n//\n// @private\n// @param {String} attrName Attribute name to check.\nfunction shouldExtend( attrName ) {\n\treturn attrName == 'class' || attrName == 'style';\n}\n\n/**\n * A definition of {@link module:ui/template~Template}.\n * See: {@link module:ui/template~TemplateValueSchema}.\n *\n *\t\tnew Template( {\n *\t\t\ttag: 'p',\n *\t\t\tchildren: [\n *\t\t\t\t{\n *\t\t\t\t\ttag: 'span',\n *\t\t\t\t\tattributes: { ... },\n *\t\t\t\t\tchildren: [ ... ],\n *\t\t\t\t\t...\n *\t\t\t\t},\n *\t\t\t\t{\n *\t\t\t\t\ttext: 'static–text'\n *\t\t\t\t},\n *\t\t\t\t'also-static–text',\n *\t\t\t\t<{@link module:ui/view~View} instance>\n *\t\t\t\t<{@link module:ui/template~Template} instance>\n *\t\t\t\t...\n *\t\t\t],\n *\t\t\tattributes: {\n *\t\t\t\tclass: {@link module:ui/template~TemplateValueSchema},\n *\t\t\t\tid: {@link module:ui/template~TemplateValueSchema},\n *\t\t\t\tstyle: {@link module:ui/template~TemplateValueSchema}\n *\t\t\t\t...\n *\t\t\t},\n *\t\t\ton: {\n *\t\t\t\t'click': {@link module:ui/template~TemplateListenerSchema}\n *\t\t\t\t'keyup@.some-class': {@link module:ui/template~TemplateListenerSchema},\n *\t\t\t\t...\n *\t\t\t}\n *\t\t} );\n *\n *\t\t// An entire view collection can be used as a child in the definition.\n *\t\tnew Template( {\n *\t\t\ttag: 'p',\n *\t\t\tchildren: <{@link module:ui/viewcollection~ViewCollection} instance>\n *\t\t} );\n *\n * @typedef module:ui/template~TemplateDefinition\n * @type Object\n * @property {String} tag\n * @property {Array.<module:ui/template~TemplateDefinition>} [children]\n * @property {Object.<String,module:ui/template~TemplateValueSchema>} [attributes]\n * @property {String|module:ui/template~TemplateValueSchema|Array.<String|module:ui/template~TemplateValueSchema>} [text]\n * @property {Object.<String,module:ui/template~TemplateListenerSchema>} [on]\n */\n\n/**\n * Describes a value of HTMLElement attribute or `textContent`. See:\n *  * {@link module:ui/template~TemplateDefinition},\n *  * {@link module:ui/template~Template.bind},\n *\n *\t\tconst bind = Template.bind( observableInstance, emitterInstance );\n *\n *\t\tnew Template( {\n *\t\t\ttag: 'p',\n *\t\t\tattributes: {\n *\t\t\t\t// Plain String schema.\n *\t\t\t\tclass: 'static-text'\n *\n *\t\t\t\t// Object schema, an `ObservableMixin` binding.\n *\t\t\t\tclass: bind.to( 'foo' )\n *\n *\t\t\t\t// Array schema, combines the above.\n *\t\t\t\tclass: [\n *\t\t\t\t\t'static-text',\n *\t\t\t\t\tbind.to( 'bar', () => { ... } )\n *\t\t\t\t],\n *\n *\t\t\t\t// Array schema, with custom namespace.\n *\t\t\t\tclass: {\n *\t\t\t\t\tns: 'http://ns.url',\n *\t\t\t\t\tvalue: [\n *\t\t\t\t\t\tbind.if( 'baz', 'value-when-true' )\n *\t\t\t\t\t\t'static-text'\n *\t\t\t\t\t]\n *\t\t\t\t},\n *\n *\t\t\t\t// Object literal schema, specific for styles.\n *\t\t\t\tstyle: {\n *\t\t\t\t\tcolor: 'red',\n *\t\t\t\t\tbackgroundColor: bind.to( 'qux', () => { ... } )\n *\t\t\t\t}\n *\t\t\t}\n *\t\t} );\n *\n * @typedef module:ui/template~TemplateValueSchema\n * @type {Object|String|Array}\n */\n\n/**\n * Describes a listener attached to HTMLElement. See: {@link module:ui/template~TemplateDefinition}.\n *\n *\t\tnew Template( {\n *\t\t\ttag: 'p',\n *\t\t\ton: {\n *\t\t\t\t// Plain String schema.\n *\t\t\t\tclick: 'clicked'\n *\n *\t\t\t\t// Object schema, an `ObservableMixin` binding.\n *\t\t\t\tclick: {@link module:ui/template~TemplateBinding}\n *\n *\t\t\t\t// Array schema, combines the above.\n *\t\t\t\tclick: [\n *\t\t\t\t\t'clicked',\n *\t\t\t\t\t{@link module:ui/template~TemplateBinding}\n *\t\t\t\t],\n *\n *\t\t\t\t// Array schema, with custom callback.\n *\t\t\t\t// Note: It will work for \"click\" event on class=\".foo\" children only.\n *\t\t\t\t'click@.foo': {\n *\t\t\t\t\t'clicked',\n *\t\t\t\t\t{@link module:ui/template~TemplateBinding},\n *\t\t\t\t\t() => { ... }\n *\t\t\t\t}\n *\t\t\t}\n *\t\t} );\n *\n * @typedef module:ui/template~TemplateListenerSchema\n * @type {Object|String|Array}\n */\n\n/**\n * The type of {@link ~Template.bind}'s return value.\n *\n * @interface module:ui/template~BindChain\n */\n\n/**\n * Binds {@link module:utils/observablemixin~ObservableMixin} instance to:\n *\n * * HTMLElement attribute or Text Node `textContent` so remains in sync with the Observable when it changes:\n * * HTMLElement DOM event, so the DOM events are propagated through Observable.\n *\n *\t\tconst bind = Template.bind( observableInstance, emitterInstance );\n *\n *\t\tnew Template( {\n *\t\t\ttag: 'p',\n *\t\t\tattributes: {\n *\t\t\t\t// class=\"...\" attribute gets bound to `observableInstance#a`\n *\t\t\t\t'class': bind.to( 'a' )\n *\t\t\t},\n *\t\t\tchildren: [\n *\t\t\t\t// <p>...</p> gets bound to `observableInstance#b`; always `toUpperCase()`.\n *\t\t\t\t{ text: bind.to( 'b', ( value, node ) => value.toUpperCase() ) }\n *\t\t\t],\n *\t\t\ton: {\n *\t\t\t\tclick: [\n *\t\t\t\t\t// \"clicked\" event will be fired on `observableInstance` when \"click\" fires in DOM.\n *\t\t\t\t\tbind.to( 'clicked' ),\n *\n *\t\t\t\t\t// A custom callback function will be executed when \"click\" fires in DOM.\n *\t\t\t\t\tbind.to( () => {\n *\t\t\t\t\t\t...\n *\t\t\t\t\t} )\n *\t\t\t\t]\n *\t\t\t}\n *\t\t} ).render();\n *\n *\t\tconst bind = Template.bind( observableInstance, emitterInstance );\n *\n *\t\tnew Template( {\n *\t\t\ttag: 'p',\n *\t\t} ).render();\n *\n * @method #to\n * @param {String|Function} eventNameOrFunctionOrAttribute An attribute name of\n * {@link module:utils/observablemixin~ObservableMixin} or a DOM event name or an event callback.\n * @param {Function} [callback] Allows processing of the value. Accepts `Node` and `value` as arguments.\n * @return {module:ui/template~TemplateBinding}\n */\n\n/**\n * Binds {@link module:utils/observablemixin~ObservableMixin} to HTMLElement attribute or Text Node `textContent`\n * so remains in sync with the Model when it changes. Unlike {@link module:ui/template~BindChain#to},\n * it controls the presence of the attribute/`textContent` depending on the \"falseness\" of\n * {@link module:utils/observablemixin~ObservableMixin} attribute.\n *\n *\t\tconst bind = Template.bind( observableInstance, emitterInstance );\n *\n *\t\tnew Template( {\n *\t\t\ttag: 'input',\n *\t\t\tattributes: {\n *\t\t\t\t// <input checked> when `observableInstance#a` is not undefined/null/false/''\n *\t\t\t\t// <input> when `observableInstance#a` is undefined/null/false\n *\t\t\t\tchecked: bind.if( 'a' )\n *\t\t\t},\n *\t\t\tchildren: [\n *\t\t\t\t{\n *\t\t\t\t\t// <input>\"b-is-not-set\"</input> when `observableInstance#b` is undefined/null/false/''\n *\t\t\t\t\t// <input></input> when `observableInstance#b` is not \"falsy\"\n *\t\t\t\t\ttext: bind.if( 'b', 'b-is-not-set', ( value, node ) => !value )\n *\t\t\t\t}\n *\t\t\t]\n *\t\t} ).render();\n *\n * @method #if\n * @param {String} attribute An attribute name of {@link module:utils/observablemixin~ObservableMixin} used in the binding.\n * @param {String} [valueIfTrue] Value set when {@link module:utils/observablemixin~ObservableMixin} attribute is not\n * undefined/null/false/''.\n * @param {Function} [callback] Allows processing of the value. Accepts `Node` and `value` as arguments.\n * @return {module:ui/template~TemplateBinding}\n */\n\n/**\n * The {@link module:ui/template~Template#_renderNode} configuration.\n *\n * @private\n * @interface module:ui/template~RenderData\n */\n\n/**\n * Tells {@link module:ui/template~Template#_renderNode} to render\n * children into `DocumentFragment` first and then append the fragment\n * to the parent element. It's a speed optimization.\n *\n * @member {Boolean} #intoFragment\n */\n\n/**\n * A node which is being rendered.\n *\n * @member {HTMLElement|Text} #node\n */\n\n/**\n * Indicates whether the {@module:ui/template~RenderNodeOptions#node} has\n * been provided by {@module:ui/template~Template#apply}.\n *\n * @member {Boolean} #isApplying\n */\n\n/**\n * An object storing the data that helps {@module:ui/template~Template#revert}\n * bringing back an element to its initial state, i.e. before\n * {@module:ui/template~Template#apply} was called.\n *\n * @member {Object} #revertData\n */\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-ui/src/template.js\n// module id = 6\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/emittermixin\n */\n\nimport EventInfo from './eventinfo';\nimport uid from './uid';\nimport priorities from './priorities';\n\nconst _listeningTo = Symbol( 'listeningTo' );\nconst _emitterId = Symbol( 'emitterId' );\n\n/**\n * Mixin that injects the events API into its host.\n *\n * @mixin EmitterMixin\n * @implements module:utils/emittermixin~Emitter\n */\nconst EmitterMixin = {\n\t/**\n\t * Registers a callback function to be executed when an event is fired. Events can be grouped in namespaces using `:`.\n\t * When namespaced event is fired, it additionaly fires all callbacks for that namespace.\n\t *\n\t *\t\tmyEmitter.on( 'myGroup', genericCallback );\n\t *\t\tmyEmitter.on( 'myGroup:myEvent', specificCallback );\n\t *\t\tmyEmitter.fire( 'myGroup' ); // genericCallback is fired.\n\t *\t\tmyEmitter.fire( 'myGroup:myEvent' ); // both genericCallback and specificCallback are fired.\n\t *\t\tmyEmitter.fire( 'myGroup:foo' ); // genericCallback is fired even though there are no callbacks for \"foo\".\n\t *\n\t * @method #on\n\t * @param {String} event The name of the event.\n\t * @param {Function} callback The function to be called on event.\n\t * @param {Object} [options={}] Additional options.\n\t * @param {module:utils/priorities~PriorityString|Number} [options.priority='normal'] The priority of this event callback. The higher\n\t * the priority value the sooner the callback will be fired. Events having the same priority are called in the\n\t * order they were added.\n\t * @param {Object} [options.context] The object that represents `this` in the callback. Defaults to the object firing the event.\n\t */\n\ton( event, callback, options = {} ) {\n\t\tcreateEventNamespace( this, event );\n\t\tconst lists = getCallbacksListsForNamespace( this, event );\n\t\tconst priority = priorities.get( options.priority );\n\n\t\tcallback = {\n\t\t\tcallback: callback,\n\t\t\tcontext: options.context || this,\n\t\t\tpriority: priority\n\t\t};\n\n\t\t// Add the callback to all callbacks list.\n\t\tfor ( let callbacks of lists ) {\n\t\t\t// Add the callback to the list in the right priority position.\n\t\t\tlet added = false;\n\n\t\t\tfor ( let i = 0; i < callbacks.length; i++ ) {\n\t\t\t\tif ( callbacks[ i ].priority < priority ) {\n\t\t\t\t\tcallbacks.splice( i, 0, callback );\n\t\t\t\t\tadded = true;\n\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Add at the end, if right place was not found.\n\t\t\tif ( !added ) {\n\t\t\t\tcallbacks.push( callback );\n\t\t\t}\n\t\t}\n\t},\n\n\t/**\n\t * Registers a callback function to be executed on the next time the event is fired only. This is similar to\n\t * calling {@link #on} followed by {@link #off} in the callback.\n\t *\n\t * @method #once\n\t * @param {String} event The name of the event.\n\t * @param {Function} callback The function to be called on event.\n\t * @param {Object} [options={}] Additional options.\n\t * @param {module:utils/priorities~PriorityString|Number} [options.priority='normal'] The priority of this event callback. The higher\n\t * the priority value the sooner the callback will be fired. Events having the same priority are called in the\n\t * order they were added.\n\t * @param {Object} [options.context] The object that represents `this` in the callback. Defaults to the object firing the event.\n\t */\n\tonce( event, callback, options ) {\n\t\tconst onceCallback = function( event ) {\n\t\t\t// Go off() at the first call.\n\t\t\tevent.off();\n\n\t\t\t// Go with the original callback.\n\t\t\tcallback.apply( this, arguments );\n\t\t};\n\n\t\t// Make a similar on() call, simply replacing the callback.\n\t\tthis.on( event, onceCallback, options );\n\t},\n\n\t/**\n\t * Stops executing the callback on the given event.\n\t *\n\t * @method #off\n\t * @param {String} event The name of the event.\n\t * @param {Function} callback The function to stop being called.\n\t * @param {Object} [context] The context object to be removed, pared with the given callback. To handle cases where\n\t * the same callback is used several times with different contexts.\n\t */\n\toff( event, callback, context ) {\n\t\tconst lists = getCallbacksListsForNamespace( this, event );\n\n\t\tfor ( let callbacks of lists ) {\n\t\t\tfor ( let i = 0; i < callbacks.length; i++ ) {\n\t\t\t\tif ( callbacks[ i ].callback == callback ) {\n\t\t\t\t\tif ( !context || context == callbacks[ i ].context ) {\n\t\t\t\t\t\t// Remove the callback from the list (fixing the next index).\n\t\t\t\t\t\tcallbacks.splice( i, 1 );\n\t\t\t\t\t\ti--;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t},\n\n\t/**\n\t * Registers a callback function to be executed when an event is fired in a specific (emitter) object.\n\t *\n\t * @method #listenTo\n\t * @param {module:utils/emittermixin~Emitter} emitter The object that fires the event.\n\t * @param {String} event The name of the event.\n\t * @param {Function} callback The function to be called on event.\n\t * @param {Object} [options={}] Additional options.\n\t * @param {module:utils/priorities~PriorityString|Number} [options.priority='normal'] The priority of this event callback. The higher\n\t * the priority value the sooner the callback will be fired. Events having the same priority are called in the\n\t * order they were added.\n\t * @param {Object} [options.context] The object that represents `this` in the callback. Defaults to the object firing the event.\n\t */\n\tlistenTo( emitter, event, callback, options ) {\n\t\tlet emitters, emitterId, emitterInfo, eventCallbacks;\n\n\t\t// _listeningTo contains a list of emitters that this object is listening to.\n\t\t// This list has the following format:\n\t\t//\n\t\t// _listeningTo: {\n\t\t//     emitterId: {\n\t\t//         emitter: emitter,\n\t\t//         callbacks: {\n\t\t//             event1: [ callback1, callback2, ... ]\n\t\t//             ....\n\t\t//         }\n\t\t//     },\n\t\t//     ...\n\t\t// }\n\n\t\tif ( !this[ _listeningTo ] ) {\n\t\t\tthis[ _listeningTo ] = {};\n\t\t}\n\n\t\temitters = this[ _listeningTo ];\n\n\t\tif ( !_getEmitterId( emitter ) ) {\n\t\t\t_setEmitterId( emitter );\n\t\t}\n\n\t\temitterId = _getEmitterId( emitter );\n\n\t\tif ( !( emitterInfo = emitters[ emitterId ] ) ) {\n\t\t\temitterInfo = emitters[ emitterId ] = {\n\t\t\t\temitter: emitter,\n\t\t\t\tcallbacks: {}\n\t\t\t};\n\t\t}\n\n\t\tif ( !( eventCallbacks = emitterInfo.callbacks[ event ] ) ) {\n\t\t\teventCallbacks = emitterInfo.callbacks[ event ] = [];\n\t\t}\n\n\t\teventCallbacks.push( callback );\n\n\t\t// Finally register the callback to the event.\n\t\temitter.on( event, callback, options );\n\t},\n\n\t/**\n\t * Stops listening for events. It can be used at different levels:\n\t *\n\t * * To stop listening to a specific callback.\n\t * * To stop listening to a specific event.\n\t * * To stop listening to all events fired by a specific object.\n\t * * To stop listening to all events fired by all object.\n\t *\n\t * @method #stopListening\n\t * @param {module:utils/emittermixin~Emitter} [emitter] The object to stop listening to. If omitted, stops it for all objects.\n\t * @param {String} [event] (Requires the `emitter`) The name of the event to stop listening to. If omitted, stops it\n\t * for all events from `emitter`.\n\t * @param {Function} [callback] (Requires the `event`) The function to be removed from the call list for the given\n\t * `event`.\n\t */\n\tstopListening( emitter, event, callback ) {\n\t\tlet emitters = this[ _listeningTo ];\n\t\tlet emitterId = emitter && _getEmitterId( emitter );\n\t\tlet emitterInfo = emitters && emitterId && emitters[ emitterId ];\n\t\tlet eventCallbacks = emitterInfo && event && emitterInfo.callbacks[ event ];\n\n\t\t// Stop if nothing has been listened.\n\t\tif ( !emitters || ( emitter && !emitterInfo ) || ( event && !eventCallbacks ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// All params provided. off() that single callback.\n\t\tif ( callback ) {\n\t\t\temitter.off( event, callback );\n\t\t}\n\t\t// Only `emitter` and `event` provided. off() all callbacks for that event.\n\t\telse if ( eventCallbacks ) {\n\t\t\twhile ( ( callback = eventCallbacks.pop() ) ) {\n\t\t\t\temitter.off( event, callback );\n\t\t\t}\n\t\t\tdelete emitterInfo.callbacks[ event ];\n\t\t}\n\t\t// Only `emitter` provided. off() all events for that emitter.\n\t\telse if ( emitterInfo ) {\n\t\t\tfor ( event in emitterInfo.callbacks ) {\n\t\t\t\tthis.stopListening( emitter, event );\n\t\t\t}\n\t\t\tdelete emitters[ emitterId ];\n\t\t}\n\t\t// No params provided. off() all emitters.\n\t\telse {\n\t\t\tfor ( emitterId in emitters ) {\n\t\t\t\tthis.stopListening( emitters[ emitterId ].emitter );\n\t\t\t}\n\t\t\tdelete this[ _listeningTo ];\n\t\t}\n\t},\n\n\t/**\n\t * Fires an event, executing all callbacks registered for it.\n\t *\n\t * The first parameter passed to callbacks is an {@link module:utils/eventinfo~EventInfo} object,\n\t * followed by the optional `args` provided in the `fire()` method call.\n\t *\n\t * @method #fire\n\t * @param {String|module:utils/eventinfo~EventInfo} eventOrInfo The name of the event or `EventInfo` object if event is delegated.\n\t * @param {...*} [args] Additional arguments to be passed to the callbacks.\n\t */\n\tfire( eventOrInfo, ...args ) {\n\t\tconst eventInfo = eventOrInfo instanceof EventInfo ? eventOrInfo : new EventInfo( this, eventOrInfo );\n\t\tconst event = eventInfo.name;\n\t\tlet callbacks = getCallbacksForEvent( this, event );\n\n\t\t// Record that the event passed this emitter on its path.\n\t\teventInfo.path.push( this );\n\n\t\t// Handle event listener callbacks first.\n\t\tif ( callbacks ) {\n\t\t\t// Arguments passed to each callback.\n\t\t\tconst callbackArgs = [ eventInfo, ...args ];\n\n\t\t\t// Copying callbacks array is the easiest and most secure way of preventing infinite loops, when event callbacks\n\t\t\t// are added while processing other callbacks. Previous solution involved adding counters (unique ids) but\n\t\t\t// failed if callbacks were added to the queue before currently processed callback.\n\t\t\t// If this proves to be too inefficient, another method is to change `.on()` so callbacks are stored if same\n\t\t\t// event is currently processed. Then, `.fire()` at the end, would have to add all stored events.\n\t\t\tcallbacks = Array.from( callbacks );\n\n\t\t\tfor ( let i = 0; i < callbacks.length; i++ ) {\n\t\t\t\tcallbacks[ i ].callback.apply( callbacks[ i ].context, callbackArgs );\n\n\t\t\t\t// Remove the callback from future requests if off() has been called.\n\t\t\t\tif ( eventInfo.off.called ) {\n\t\t\t\t\t// Remove the called mark for the next calls.\n\t\t\t\t\tdelete eventInfo.off.called;\n\n\t\t\t\t\tthis.off( event, callbacks[ i ].callback, callbacks[ i ].context );\n\t\t\t\t}\n\n\t\t\t\t// Do not execute next callbacks if stop() was called.\n\t\t\t\tif ( eventInfo.stop.called ) {\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t// Delegate event to other emitters if needed.\n\t\tif ( this._delegations ) {\n\t\t\tconst destinations = this._delegations.get( event );\n\t\t\tconst passAllDestinations = this._delegations.get( '*' );\n\n\t\t\tif ( destinations ) {\n\t\t\t\tfireDelegatedEvents( destinations, eventInfo, args );\n\t\t\t}\n\n\t\t\tif ( passAllDestinations ) {\n\t\t\t\tfireDelegatedEvents( passAllDestinations, eventInfo, args );\n\t\t\t}\n\t\t}\n\t},\n\n\t/**\n\t * Delegates selected events to another {@link module:utils/emittermixin~Emitter}. For instance:\n\t *\n\t *\t\temitterA.delegate( 'eventX' ).to( emitterB );\n\t *\t\temitterA.delegate( 'eventX', 'eventY' ).to( emitterC );\n\t *\n\t * then `eventX` is delegated (fired by) `emitterB` and `emitterC` along with `data`:\n\t *\n\t *\t\temitterA.fire( 'eventX', data );\n\t *\n\t * and `eventY` is delegated (fired by) `emitterC` along with `data`:\n\t *\n\t *\t\temitterA.fire( 'eventY', data );\n\t *\n\t * @method #delegate\n\t * @param {...String} events Event names that will be delegated to another emitter.\n\t * @returns {module:utils/emittermixin~EmitterMixinDelegateChain}\n\t */\n\tdelegate( ...events ) {\n\t\treturn {\n\t\t\tto: ( emitter, nameOrFunction ) => {\n\t\t\t\tif ( !this._delegations ) {\n\t\t\t\t\tthis._delegations = new Map();\n\t\t\t\t}\n\n\t\t\t\tfor ( let eventName of events ) {\n\t\t\t\t\tlet destinations = this._delegations.get( eventName );\n\n\t\t\t\t\tif ( !destinations ) {\n\t\t\t\t\t\tthis._delegations.set( eventName, new Map( [ [ emitter, nameOrFunction ] ] ) );\n\t\t\t\t\t} else {\n\t\t\t\t\t\tdestinations.set( emitter, nameOrFunction );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t};\n\t},\n\n\t/**\n\t * Stops delegating events. It can be used at different levels:\n\t *\n\t * * To stop delegating all events.\n\t * * To stop delegating a specific event to all emitters.\n\t * * To stop delegating a specific event to a specific emitter.\n\t *\n\t * @method #stopDelegating\n\t * @param {String} [event] The name of the event to stop delegating. If omitted, stops it all delegations.\n\t * @param {module:utils/emittermixin~Emitter} [emitter] (requires `event`) The object to stop delegating a particular event to.\n\t * If omitted, stops delegation of `event` to all emitters.\n\t */\n\tstopDelegating( event, emitter ) {\n\t\tif ( !this._delegations ) {\n\t\t\treturn;\n\t\t}\n\n\t\tif ( !event ) {\n\t\t\tthis._delegations.clear();\n\t\t} else if ( !emitter ) {\n\t\t\tthis._delegations.delete( event );\n\t\t} else {\n\t\t\tconst destinations = this._delegations.get( event );\n\n\t\t\tif ( destinations ) {\n\t\t\t\tdestinations.delete( emitter );\n\t\t\t}\n\t\t}\n\t}\n};\n\nexport default EmitterMixin;\n\n/**\n * Checks if `listeningEmitter` listens to an emitter with given `listenedToEmitterId` and if so, returns that emitter.\n * If not, returns `null`.\n *\n * @protected\n * @param {module:utils/emittermixin~EmitterMixin} listeningEmitter Emitter that listens.\n * @param {String} listenedToEmitterId Unique emitter id of emitter listened to.\n * @returns {module:utils/emittermixin~EmitterMixin|null}\n */\nexport function _getEmitterListenedTo( listeningEmitter, listenedToEmitterId ) {\n\tif ( listeningEmitter[ _listeningTo ] && listeningEmitter[ _listeningTo ][ listenedToEmitterId ] ) {\n\t\treturn listeningEmitter[ _listeningTo ][ listenedToEmitterId ].emitter;\n\t}\n\n\treturn null;\n}\n\n/**\n * Sets emitter's unique id.\n *\n * **Note:** `_emitterId` can be set only once.\n *\n * @protected\n * @param {module:utils/emittermixin~EmitterMixin} emitter Emitter for which id will be set.\n * @param {String} [id] Unique id to set. If not passed, random unique id will be set.\n */\nexport function _setEmitterId( emitter, id ) {\n\tif ( !emitter[ _emitterId ] ) {\n\t\temitter[ _emitterId ] = id || uid();\n\t}\n}\n\n/**\n * Returns emitter's unique id.\n *\n * @protected\n * @param {module:utils/emittermixin~EmitterMixin} emitter Emitter which id will be returned.\n */\nexport function _getEmitterId( emitter ) {\n\treturn emitter[ _emitterId ];\n}\n\n// Gets the internal `_events` property of the given object.\n// `_events` property store all lists with callbacks for registered event names.\n// If there were no events registered on the object, empty `_events` object is created.\nfunction getEvents( source ) {\n\tif ( !source._events ) {\n\t\tObject.defineProperty( source, '_events', {\n\t\t\tvalue: {}\n\t\t} );\n\t}\n\n\treturn source._events;\n}\n\n// Creates event node for generic-specific events relation architecture.\nfunction makeEventNode() {\n\treturn {\n\t\tcallbacks: [],\n\t\tchildEvents: []\n\t};\n}\n\n// Creates an architecture for generic-specific events relation.\n// If needed, creates all events for given eventName, i.e. if the first registered event\n// is foo:bar:abc, it will create foo:bar:abc, foo:bar and foo event and tie them together.\n// It also copies callbacks from more generic events to more specific events when\n// specific events are created.\nfunction createEventNamespace( source, eventName ) {\n\tconst events = getEvents( source );\n\n\t// First, check if the event we want to add to the structure already exists.\n\tif ( events[ eventName ] ) {\n\t\t// If it exists, we don't have to do anything.\n\t\treturn;\n\t}\n\n\t// In other case, we have to create the structure for the event.\n\t// Note, that we might need to create intermediate events too.\n\t// I.e. if foo:bar:abc is being registered and we only have foo in the structure,\n\t// we need to also register foo:bar.\n\n\t// Currently processed event name.\n\tlet name = eventName;\n\t// Name of the event that is a child event for currently processed event.\n\tlet childEventName = null;\n\n\t// Array containing all newly created specific events.\n\tconst newEventNodes = [];\n\n\t// While loop can't check for ':' index because we have to handle generic events too.\n\t// In each loop, we truncate event name, going from the most specific name to the generic one.\n\t// I.e. foo:bar:abc -> foo:bar -> foo.\n\twhile ( name !== '' ) {\n\t\tif ( events[ name ] ) {\n\t\t\t// If the currently processed event name is already registered, we can be sure\n\t\t\t// that it already has all the structure created, so we can break the loop here\n\t\t\t// as no more events need to be registered.\n\t\t\tbreak;\n\t\t}\n\n\t\t// If this event is not yet registered, create a new object for it.\n\t\tevents[ name ] = makeEventNode();\n\t\t// Add it to the array with newly created events.\n\t\tnewEventNodes.push( events[ name ] );\n\n\t\t// Add previously processed event name as a child of this event.\n\t\tif ( childEventName ) {\n\t\t\tevents[ name ].childEvents.push( childEventName );\n\t\t}\n\n\t\tchildEventName = name;\n\t\t// If `.lastIndexOf()` returns -1, `.substr()` will return '' which will break the loop.\n\t\tname = name.substr( 0, name.lastIndexOf( ':' ) );\n\t}\n\n\tif ( name !== '' ) {\n\t\t// If name is not empty, we found an already registered event that was a parent of the\n\t\t// event we wanted to register.\n\n\t\t// Copy that event's callbacks to newly registered events.\n\t\tfor ( let node of newEventNodes ) {\n\t\t\tnode.callbacks = events[ name ].callbacks.slice();\n\t\t}\n\n\t\t// Add last newly created event to the already registered event.\n\t\tevents[ name ].childEvents.push( childEventName );\n\t}\n}\n\n// Gets an array containing callbacks list for a given event and it's more specific events.\n// I.e. if given event is foo:bar and there is also foo:bar:abc event registered, this will\n// return callback list of foo:bar and foo:bar:abc (but not foo).\n// Returns empty array if given event has not been yet registered.\nfunction getCallbacksListsForNamespace( source, eventName ) {\n\tconst eventNode = getEvents( source )[ eventName ];\n\n\tif ( !eventNode ) {\n\t\treturn [];\n\t}\n\n\tlet callbacksLists = [ eventNode.callbacks ];\n\n\tfor ( let i = 0; i < eventNode.childEvents.length; i++ ) {\n\t\tlet childCallbacksLists = getCallbacksListsForNamespace( source, eventNode.childEvents[ i ] );\n\n\t\tcallbacksLists = callbacksLists.concat( childCallbacksLists );\n\t}\n\n\treturn callbacksLists;\n}\n\n// Get the list of callbacks for a given event, but only if there any callbacks have been registered.\n// If there are no callbacks registered for given event, it checks if this is a specific event and looks\n// for callbacks for it's more generic version.\nfunction getCallbacksForEvent( source, eventName ) {\n\tlet event;\n\n\tif ( !source._events || !( event = source._events[ eventName ] ) || !event.callbacks.length ) {\n\t\t// There are no callbacks registered for specified eventName.\n\t\t// But this could be a specific-type event that is in a namespace.\n\t\tif ( eventName.indexOf( ':' ) > -1 ) {\n\t\t\t// If the eventName is specific, try to find callback lists for more generic event.\n\t\t\treturn getCallbacksForEvent( source, eventName.substr( 0, eventName.lastIndexOf( ':' ) ) );\n\t\t} else {\n\t\t\t// If this is a top-level generic event, return null;\n\t\t\treturn null;\n\t\t}\n\t}\n\n\treturn event.callbacks;\n}\n\n// Fires delegated events for given map of destinations.\n//\n// @private\n// * @param {Map.<utils.Emitter>} destinations A map containing `[ {@link utils.Emitter}, \"event name\" ]` pair destinations.\n// * @param {utils.EventInfo} eventInfo The original event info object.\n// * @param {Array.<*>} fireArgs Arguments the original event was fired with.\nfunction fireDelegatedEvents( destinations, eventInfo, fireArgs ) {\n\tfor ( let [ emitter, name ] of destinations ) {\n\t\tif ( !name ) {\n\t\t\tname = eventInfo.name;\n\t\t} else if ( typeof name == 'function' ) {\n\t\t\tname = name( eventInfo.name );\n\t\t}\n\n\t\tconst delegatedInfo = new EventInfo( eventInfo.source, name );\n\n\t\tdelegatedInfo.path = [ ...eventInfo.path ];\n\n\t\temitter.fire( delegatedInfo, ...fireArgs );\n\t}\n}\n\n/**\n * Interface representing classes which mix in {@link module:utils/emittermixin~EmitterMixin}.\n *\n * @interface Emitter\n */\n\n/**\n * The return value of {@link ~EmitterMixin#delegate}.\n *\n * @interface module:utils/emittermixin~EmitterMixinDelegateChain\n */\n\n/**\n * Selects destination for {@link module:utils/emittermixin~EmitterMixin#delegate} events.\n *\n * @method #to\n * @param {module:utils/emittermixin~Emitter} emitter An `EmitterMixin` instance which is the destination for delegated events.\n * @param {String|Function} nameOrFunction A custom event name or function which converts the original name string.\n */\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/emittermixin.js\n// module id = 7\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/view\n */\n\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\nimport ViewCollection from './viewcollection';\nimport Template from './template';\nimport DomEmmiterMixin from '@ckeditor/ckeditor5-utils/src/dom/emittermixin';\nimport ObservableMixin from '@ckeditor/ckeditor5-utils/src/observablemixin';\nimport Collection from '@ckeditor/ckeditor5-utils/src/collection';\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\nimport isIterable from '@ckeditor/ckeditor5-utils/src/isiterable';\n\n/**\n * Basic View class.\n *\n *\t\tclass SampleView extends View {\n *\t\t\tconstructor( locale ) {\n *\t\t\t\tsuper( locale );\n *\n *\t\t\t\tthis.template = new Template( {\n *\t\t\t\t\ttag: 'p',\n *\t\t\t\t\tchildren: [\n *\t\t\t\t\t\t'Hello',\n *\t\t\t\t\t\t{\n *\t\t\t\t\t\t\ttag: 'b',\n *\t\t\t\t\t\t\tchildren: [\n *\t\t\t\t\t\t\t\t'world!'\n *\t\t\t\t\t\t\t]\n *\t\t\t\t\t\t}\n *\t\t\t\t\t],\n *\t\t\t\t\tattributes: {\n *\t\t\t\t\t\tclass: 'foo'\n *\t\t\t\t\t}\n *\t\t\t\t} );\n *\t\t\t}\n *\t\t}\n *\n *\t\tconst view = new SampleView( locale );\n *\n *\t\tview.init().then( () => {\n *\t\t\t// Will append <p class=\"foo\">Hello<b>world</b></p>\n *\t\t\tdocument.body.appendChild( view.element );\n *\t\t} );\n *\n * @mixes module:utils/dom/emittermixin~EmmiterMixin\n * @mixes module:utils/observablemixin~ObservableMixin\n */\nexport default class View {\n\t/**\n\t * Creates an instance of the {@link module:ui/view~View} class.\n\t *\n\t * @param {module:utils/locale~Locale} [locale] The {@link module:core/editor/editor~Editor editor's locale} instance.\n\t */\n\tconstructor( locale ) {\n\t\t/**\n\t\t * A set of tools to localize the user interface. See {@link module:core/editor/editor~Editor}.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:utils/locale~Locale}\n\t\t */\n\t\tthis.locale = locale;\n\n\t\t/**\n\t\t * Shorthand for {@link module:utils/locale~Locale#t}.\n\t\t *\n\t\t * Note: If locale instance hasn't been passed to the view this method may not be available.\n\t\t *\n\t\t * @see module:utils/locale~Locale#t\n\t\t * @method\n\t\t */\n\t\tthis.t = locale && locale.t;\n\n\t\t/**\n\t\t * Set `true` after {@link #init}, which can be asynchronous.\n\t\t *\n\t\t * @readonly\n\t\t * @observable\n\t\t * @member {Boolean} #ready\n\t\t */\n\t\tthis.set( 'ready', false );\n\n\t\t/**\n\t\t * Collections registered with {@link #createCollection}.\n\t\t *\n\t\t * @protected\n\t\t * @member {Set.<module:ui/viewcollection~ViewCollection>}\n\t\t */\n\t\tthis._viewCollections = new Collection();\n\n\t\t/**\n\t\t * A collection of view instances, which have been added directly\n\t\t * into the {@link module:ui/template~Template#children}.\n\t\t *\n\t\t * @protected\n\t\t * @member {module:ui/viewcollection~ViewCollection}\n\t\t */\n\t\tthis._unboundChildren = this.createCollection();\n\n\t\t// Pass parent locale to its children.\n\t\tthis._viewCollections.on( 'add', ( evt, collection ) => {\n\t\t\tcollection.locale = locale;\n\t\t} );\n\n\t\t/**\n\t\t * Template of this view.\n\t\t *\n\t\t * @member {module:ui/template~Template} #template\n\t\t */\n\n\t\t/**\n\t\t * Element of this view.\n\t\t *\n\t\t * @private\n\t\t * @member {HTMLElement} #_element\n\t\t */\n\n\t\t/**\n\t\t * Cached {@link module:ui/template~Template} binder object specific for this instance.\n\t\t * See {@link #bindTemplate}.\n\t\t *\n\t\t * @private\n\t\t * @member {Object} #_bindTemplate\n\t\t */\n\t}\n\n\t/**\n\t * Element of this view. The element is rendered on first reference\n\t * using {@link #template} definition.\n\t *\n\t * @type {HTMLElement}\n\t */\n\tget element() {\n\t\tif ( this._element ) {\n\t\t\treturn this._element;\n\t\t}\n\n\t\t// No template means no element (a virtual view).\n\t\tif ( !this.template ) {\n\t\t\treturn null;\n\t\t}\n\n\t\tthis._addTemplateChildren();\n\n\t\treturn ( this._element = this.template.render() );\n\t}\n\n\t/**\n\t * @type {HTMLElement}\n\t */\n\tset element( el ) {\n\t\tthis._element = el;\n\t}\n\n\t/**\n\t * Shorthand for {@link module:ui/template~Template.bind}, bound to {@link ~View} on the first access.\n\t *\n\t * Cached {@link module:ui/template~Template.bind} object is stored in {@link #_bindTemplate}.\n\t *\n\t * @method #bindTemplate\n\t */\n\tget bindTemplate() {\n\t\tif ( this._bindTemplate ) {\n\t\t\treturn this._bindTemplate;\n\t\t}\n\n\t\treturn ( this._bindTemplate = Template.bind( this, this ) );\n\t}\n\n\t/**\n\t * Creates a new collection of views, which can be used in this view instance,\n\t * e.g. as a member of {@link module:ui/template~TemplateDefinition TemplateDefinition} children.\n\t *\n\t *\t\tclass SampleView extends View {\n\t *\t\t\tconstructor( locale ) {\n\t *\t\t\t\tsuper( locale );\n\t *\n\t *\t\t\t\tthis.items = this.createCollection();\n \t *\n\t *\t\t\t\tthis.template = new Template( {\n\t *\t\t\t\t\ttag: 'p',\n\t *\n\t *\t\t\t\t\t// `items` collection will render here.\n\t *\t\t\t\t\tchildren: this.items\n\t *\t\t\t\t} );\n\t *\t\t\t}\n\t *\t\t}\n\t *\n\t *\t\tconst view = new SampleView( locale );\n\t *\t\tconst anotherView = new AnotherSampleView( locale );\n\t *\n\t *\t\tview.init().then( () => {\n\t *\t\t\t// Will append <p></p>\n\t *\t\t\tdocument.body.appendChild( view.element );\n\t *\n\t *\t\t\t// `anotherView` becomes a child of the view, which is reflected in DOM\n\t *\t\t\t// <p><anotherView#element></p>\n\t *\t\t\tview.items.add( anotherView );\n\t *\t\t} );\n\t *\n\t * @returns {module:ui/viewcollection~ViewCollection} A new collection of view instances.\n\t */\n\tcreateCollection() {\n\t\tconst collection = new ViewCollection();\n\n\t\tthis._viewCollections.add( collection );\n\n\t\treturn collection;\n\t}\n\n\t/**\n\t * Registers a new child view under this view instance. Once registered, a child\n\t * view is managed by its parent, including initialization ({@link #init})\n\t * and destruction ({@link #destroy}).\n\t *\n\t *\t\tclass SampleView extends View {\n\t *\t\t\tconstructor( locale ) {\n\t *\t\t\t\tsuper( locale );\n\t *\n\t *\t\t\t\tthis.childA = new SomeChildView( locale );\n\t *\t\t\t\tthis.childB = new SomeChildView( locale );\n\t *\n\t *\t\t\t\tthis.template = new Template( { tag: 'p' } );\n\t *\n\t *\t\t\t\t// Register children.\n\t *\t\t\t\tthis.addChildren( [ this.childA, this.childB ] );\n\t *\t\t\t}\n\t *\n\t *\t\t\tinit() {\n\t *\t\t\t\tthis.element.appendChild( this.childA.element );\n\t *\t\t\t\tthis.element.appendChild( this.childB.element );\n\t *\n\t *\t\t\t\treturn super.init();\n\t *\t\t\t}\n\t *\t\t}\n\t *\n\t *\t\tconst view = new SampleView( locale );\n\t *\n\t *\t\tview.init().then( () => {\n\t *\t\t\t// Will append <p><childA#element><b></b><childB#element></p>\n\t *\t\t\tdocument.body.appendChild( view.element );\n\t *\t\t} );\n\t *\n\t * **Note**: There's no need to add child views if they're used in the\n\t * {@link #template} explicitly:\n\t *\n\t *\t\tclass SampleView extends View {\n\t *\t\t\tconstructor( locale ) {\n\t *\t\t\t\tsuper( locale );\n\t *\n\t *\t\t\t\tthis.childA = new SomeChildView( locale );\n\t *\t\t\t\tthis.childB = new SomeChildView( locale );\n\t *\n\t *\t\t\t\tthis.template = new Template( {\n\t *\t\t\t\t\ttag: 'p',\n\t *\n \t *\t\t\t\t\t// These children will be added automatically. There's no\n \t *\t\t\t\t\t// need to call {@link #addChildren} for any of them.\n\t *\t\t\t\t\tchildren: [ this.childA, this.childB ]\n\t *\t\t\t\t} );\n\t *\t\t\t}\n\t *\n\t *\t\t\t...\n\t *\t\t}\n\t *\n\t * @param {module:ui/view~View|Iterable.<module:ui/view~View>} children Children views to be registered.\n\t */\n\taddChildren( children ) {\n\t\tif ( !isIterable( children ) ) {\n\t\t\tchildren = [ children ];\n\t\t}\n\n\t\tfor ( let child of children ) {\n\t\t\tthis._unboundChildren.add( child );\n\t\t}\n\t}\n\n\t/**\n\t * Initializes the view and child views located in {@link #_viewCollections}.\n\t *\n\t * @returns {Promise} A Promise resolved when the initialization process is finished.\n\t */\n\tinit() {\n\t\tif ( this.ready ) {\n\t\t\t/**\n\t\t\t * This View has already been initialized.\n\t\t\t *\n\t\t\t * @error ui-view-init-reinit\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'ui-view-init-reinit: This View has already been initialized.' );\n\t\t}\n\n\t\treturn Promise.resolve()\n\t\t\t// Initialize collections in #_viewCollections.\n\t\t\t.then( () => {\n\t\t\t\treturn Promise.all( this._viewCollections.map( c => c.init() ) );\n\t\t\t} )\n\t\t\t// Spread the word that this view is ready!\n\t\t\t.then( () => {\n\t\t\t\tthis.ready = true;\n\t\t\t} );\n\t}\n\n\t/**\n\t * Destroys the view instance and child views located in {@link #_viewCollections}.\n\t *\n\t * @returns {Promise} A Promise resolved when the destruction process is finished.\n\t */\n\tdestroy() {\n\t\tthis.stopListening();\n\n\t\tconst promises = this._viewCollections.map( c => c.destroy() );\n\n\t\tthis._unboundChildren.clear();\n\t\tthis._viewCollections.clear();\n\n\t\tthis.element = this.template = this.locale = this.t =\n\t\t\tthis._viewCollections = this._unboundChildren = null;\n\n\t\treturn Promise.all( promises );\n\t}\n\n\t/**\n\t * Recursively traverses {@link #template} in search of {@link module:ui/view~View}\n\t * instances and automatically registers them using {@link #addChildren} method.\n\t *\n\t * @protected\n\t */\n\t_addTemplateChildren() {\n\t\tconst search = ( def ) => {\n\t\t\tif ( def.children ) {\n\t\t\t\tfor ( let defOrView of def.children ) {\n\t\t\t\t\tif ( defOrView instanceof View ) {\n\t\t\t\t\t\tthis.addChildren( defOrView );\n\t\t\t\t\t} else {\n\t\t\t\t\t\tsearch( defOrView );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t};\n\n\t\tsearch( this.template );\n\t}\n}\n\nmix( View, DomEmmiterMixin );\nmix( View, ObservableMixin );\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-ui/src/view.js\n// module id = 9\n// module chunks = 0","import baseMatches from './_baseMatches';\nimport baseMatchesProperty from './_baseMatchesProperty';\nimport identity from './identity';\nimport isArray from './isArray';\nimport property from './property';\n\n/**\n * The base implementation of `_.iteratee`.\n *\n * @private\n * @param {*} [value=_.identity] The value to convert to an iteratee.\n * @returns {Function} Returns the iteratee.\n */\nfunction baseIteratee(value) {\n  // Don't store the `typeof` result in a variable to avoid a JIT bug in Safari 9.\n  // See https://bugs.webkit.org/show_bug.cgi?id=156034 for more details.\n  if (typeof value == 'function') {\n    return value;\n  }\n  if (value == null) {\n    return identity;\n  }\n  if (typeof value == 'object') {\n    return isArray(value)\n      ? baseMatchesProperty(value[0], value[1])\n      : baseMatches(value);\n  }\n  return property(value);\n}\n\nexport default baseIteratee;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_baseIteratee.js\n// module id = 10\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module core/command/command\n */\n\nimport ObservableMixin from '@ckeditor/ckeditor5-utils/src/observablemixin';\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\n\n/**\n * The base class for CKEditor commands.\n *\n * Commands are main way to manipulate editor contents and state. They are mostly used by UI elements (or by other\n * commands) to make changes in Tree Model. Commands are available in every part of code that has access to\n * {@link module:core/editor/editor~Editor} instance, since they are registered in it and executed through\n * {@link module:core/editor/editor~Editor#execute}.\n * Commands instances are available through {@link module:core/editor/editor~Editor#commands}.\n *\n * This is an abstract base class for all commands.\n *\n * @mixes module:utils/observablemixin~ObservaleMixin\n */\nexport default class Command {\n\t/**\n\t * Creates a new Command instance.\n\t *\n\t * @param {module:core/editor/editor~Editor} editor Editor on which this command will be used.\n\t */\n\tconstructor( editor ) {\n\t\t/**\n\t\t * Editor on which this command will be used.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:core/editor/editor~Editor} #editor\n\t\t */\n\t\tthis.editor = editor;\n\n\t\t/**\n\t\t * Flag indicating whether a command is enabled or disabled.\n\t\t * A disabled command should do nothing upon it's execution.\n\t\t *\n\t\t * @observable\n\t\t * @member {Boolean} #isEnabled\n\t\t */\n\t\tthis.set( 'isEnabled', true );\n\n\t\t// If schema checking function is specified, add it to the `refreshState` listeners.\n\t\t// Feature will be disabled if it does not apply to schema requirements.\n\t\tif ( this._checkEnabled ) {\n\t\t\tthis.on( 'refreshState', ( evt, data ) => {\n\t\t\t\tdata.isEnabled = this._checkEnabled();\n\t\t\t} );\n\t\t}\n\t}\n\n\tdestroy() {\n\t\tthis.stopListening();\n\t}\n\n\t/**\n\t * Fires `refreshState` event and checks it's resolve value to decide whether command should be enabled or not.\n\t * Other parts of code might listen to `refreshState` event on this command and add their callbacks. This\n\t * way the responsibility of deciding whether a command should be enabled is shared.\n\t *\n\t * @fires refreshState\n\t */\n\trefreshState() {\n\t\tconst data = { isEnabled: true };\n\t\tthis.fire( 'refreshState', data );\n\n\t\tthis.isEnabled = data.isEnabled;\n\t}\n\n\t/**\n\t * Executes the command if it is enabled.\n\t *\n\t * @protected\n\t * @param {*} param Parameter passed to {@link module:core/editor/editor~Editor#execute execute} method of this command.\n\t */\n\t_execute( param ) {\n\t\tif ( this.isEnabled ) {\n\t\t\tthis._doExecute( param );\n\t\t}\n\t}\n\n\t/**\n\t * Disables the command. This should be used only by the command itself. Other parts of code should add\n\t * listeners to `refreshState` event.\n\t *\n\t * @protected\n\t */\n\t_disable() {\n\t\tthis.on( 'refreshState', disableCallback );\n\t\tthis.refreshState();\n\t}\n\n\t/**\n\t * Enables the command (internally). This should be used only by the command itself. Command will be enabled if\n\t * other listeners does not return false on `refreshState` event callbacks. Firing {@link #_enable}\n\t * does not guarantee that {@link #isEnabled} will be set to true, as it depends on other listeners.\n\t *\n\t * @protected\n\t */\n\t_enable() {\n\t\tthis.off( 'refreshState', disableCallback );\n\t\tthis.refreshState();\n\t}\n\n\t/**\n\t * Executes command.\n\t * This is an abstract method that should be overwritten in child classes.\n\t *\n\t * @protected\n\t */\n\t_doExecute() {}\n\n\t/**\n\t * Checks if a command should be enabled according to its own rules. Mostly it will check schema to see if the command\n\t * is allowed to be executed in given position. This method can be defined in child class (but is not obligatory).\n\t * If it is defined, it will be added as a callback to `refreshState` event.\n\t *\n\t * @protected\n\t * @method #_checkEnabled\n\t * @returns {Boolean} `true` if command should be enabled according to\n\t * {@link module:engine/model/document~Document#schema}. `false` otherwise.\n\t */\n}\n\nfunction disableCallback( evt, data ) {\n\tdata.isEnabled = false;\n}\n\nmix( Command, ObservableMixin );\n\n/**\n * Fired whenever command has to have its {@link #isEnabled} property refreshed. Every feature,\n * command or other class which needs to disable command (set `isEnabled` to `false`) should listen to this\n * event.\n *\n * @event refreshState\n * @param {Object} data\n * @param {Boolean} [data.isEnabled=true]\n */\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-core/src/command/command.js\n// module id = 11\n// module chunks = 0","/**\n * Checks if `value` is classified as an `Array` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @type {Function}\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is correctly classified,\n *  else `false`.\n * @example\n *\n * _.isArray([1, 2, 3]);\n * // => true\n *\n * _.isArray(document.body.children);\n * // => false\n *\n * _.isArray('abc');\n * // => false\n *\n * _.isArray(_.noop);\n * // => false\n */\nvar isArray = Array.isArray;\n\nexport default isArray;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/isArray.js\n// module id = 12\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/writer\n */\n\nimport Node from './node';\nimport Text from './text';\nimport TextProxy from './textproxy';\nimport Range from './range';\nimport DocumentFragment from './documentfragment';\nimport NodeList from './nodelist';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/**\n * Contains functions used for composing model tree, grouped together under \"model writer\" name. Those functions\n * are built on top of {@link module:engine/model/node~Node node}, and it's child classes', APIs.\n *\n * Model writer API has multiple advantages and it is highly recommended to use it when changing model tree and nodes:\n * * model writer API {@link module:engine/model/writer~writer.normalizeNodes normalizes inserted nodes}, which means that you can insert\n * not only {@link module:engine/model/node~Node nodes}, but also `String`s, {@link module:engine/model/textproxy~TextProxy text proxies}\n * and\n * {@link module:engine/model/documentfragment~DocumentFragment document fragments},\n * * model writer API operates on {@link module:engine/model/position~Position positions}, which means that you have\n * better control over manipulating model tree as positions operate on offsets rather than indexes,\n * * model writer API automatically merges {@link module:engine/model/text~Text text nodes} with same attributes, which means\n * lower memory usage and better efficiency.\n *\n * @namespace writer\n */\nconst writer = {\n\tinsert,\n\tremove,\n\tmove,\n\tsetAttribute,\n\tremoveAttribute,\n\tnormalizeNodes\n};\n\nexport default writer;\n\n/**\n * Inserts given nodes at given position.\n *\n * @function module:engine/model/writer~writer.insert\n * @param {module:engine/model/position~Position} position Position at which nodes should be inserted.\n * @param {module:engine/model/node~NodeSet} nodes Nodes to insert.\n * @returns {module:engine/model/range~Range} Range spanning over inserted elements.\n */\nexport function insert( position, nodes ) {\n\tnodes = normalizeNodes( nodes );\n\n\t// We have to count offset before inserting nodes because they can get merged and we would get wrong offsets.\n\tconst offset = nodes.reduce( ( sum, node ) => sum + node.offsetSize, 0 );\n\tconst parent = position.parent;\n\n\t// Insertion might be in a text node, we should split it if that's the case.\n\t_splitNodeAtPosition( position );\n\tconst index = position.index;\n\n\t// Insert nodes at given index. After splitting we have a proper index and insertion is between nodes,\n\t// using basic `Element` API.\n\tparent.insertChildren( index, nodes );\n\n\t// Merge text nodes, if possible. Merging is needed only at points where inserted nodes \"touch\" \"old\" nodes.\n\t_mergeNodesAtIndex( parent, index + nodes.length );\n\t_mergeNodesAtIndex( parent, index );\n\n\treturn new Range( position, position.getShiftedBy( offset ) );\n}\n\n/**\n * Removed nodes in given range. Only {@link module:engine/model/range~Range#isFlat flat} ranges are accepted.\n *\n * @function module:engine/model/writer~writer.remove\n * @param {module:engine/model/range~Range} range Range containing nodes to remove.\n * @returns {Array.<module:engine/model/node~Node>}\n */\nexport function remove( range ) {\n\tif ( !range.isFlat ) {\n\t\t/**\n\t\t * Trying to remove a range that starts and ends in different element.\n\t\t *\n\t\t * @error model-writer-remove-range-not-flat\n\t\t */\n\t\tthrow new CKEditorError( 'model-writer-remove-range-not-flat: ' +\n\t\t\t'Trying to remove a range that starts and ends in different element.' );\n\t}\n\n\tconst parent = range.start.parent;\n\n\t// Range may be inside text nodes, we have to split them if that's the case.\n\t_splitNodeAtPosition( range.start );\n\t_splitNodeAtPosition( range.end );\n\n\t// Remove the text nodes using basic `Element` API.\n\tconst removed = parent.removeChildren( range.start.index, range.end.index - range.start.index );\n\n\t// Merge text nodes, if possible. After some nodes were removed, node before and after removed range will be\n\t// touching at the position equal to the removed range beginning. We check merging possibility there.\n\t_mergeNodesAtIndex( parent, range.start.index );\n\n\treturn removed;\n}\n\n/**\n * Moves nodes in given range to given target position. Only {@link module:engine/model/range~Range#isFlat flat} ranges are accepted.\n *\n * @param {module:engine/model/range~Range} sourceRange Range containing nodes to move.\n * @param {module:engine/model/position~Position} targetPosition Position to which nodes should be moved.\n * @returns {module:engine/model/range~Range} Range containing moved nodes.\n */\nexport function move( sourceRange, targetPosition ) {\n\t/* jshint validthis:true */\n\tif ( !sourceRange.isFlat ) {\n\t\t/**\n\t\t * Trying to move a range that starts and ends in different element.\n\t\t *\n\t\t * @error model-writer-move-range-not-flat\n\t\t */\n\t\tthrow new CKEditorError( 'model-writer-move-range-not-flat: ' +\n\t\t\t'Trying to move a range that starts and ends in different element.' );\n\t}\n\n\tconst nodes = this.remove( sourceRange );\n\n\t// We have to fix `targetPosition` because model changed after nodes from `sourceRange` got removed and\n\t// that change might have an impact on `targetPosition`.\n\ttargetPosition = targetPosition._getTransformedByDeletion( sourceRange.start, sourceRange.end.offset - sourceRange.start.offset );\n\n\treturn this.insert( targetPosition, nodes );\n}\n\n/**\n * Sets given attribute on nodes in given range.\n *\n * @param {module:engine/model/range~Range} range Range containing nodes that should have the attribute set.\n * @param {String} key Key of attribute to set.\n * @param {*} value Attribute value.\n */\nexport function setAttribute( range, key, value ) {\n\t// Range might start or end in text nodes, so we have to split them.\n\t_splitNodeAtPosition( range.start );\n\t_splitNodeAtPosition( range.end );\n\n\t// Iterate over all items in the range.\n\tfor ( let item of range.getItems() ) {\n\t\t// Iterator will return `TextProxy` instances but we know that those text proxies will\n\t\t// always represent full text nodes (this is guaranteed thanks to splitting we did before).\n\t\t// So, we can operate on those text proxies' text nodes.\n\t\tlet node = item.is( 'textProxy' ) ? item.textNode : item;\n\n\t\tif ( value !== null ) {\n\t\t\tnode.setAttribute( key, value );\n\t\t} else {\n\t\t\tnode.removeAttribute( key );\n\t\t}\n\n\t\t// After attributes changing it may happen that some text nodes can be merged. Try to merge with previous node.\n\t\t_mergeNodesAtIndex( node.parent, node.index );\n\t}\n\n\t// Try to merge last changed node with it's previous sibling (not covered by the loop above).\n\t_mergeNodesAtIndex( range.end.parent, range.end.index );\n}\n\n/**\n * Removes given attribute from nodes in given range.\n *\n * @param {module:engine/model/range~Range} range Range containing nodes that should have the attribute removed.\n * @param {String} key Key of attribute to remove.\n */\nexport function removeAttribute( range, key ) {\n\t/* jshint validthis:true */\n\tthis.setAttribute( range, key, null );\n}\n\n/**\n * Normalizes given object or an array of objects to an array of {@link module:engine/model/node~Node nodes}. See\n * {@link module:engine/model/node~NodeSet NodeSet} for details on how normalization is performed.\n *\n * @param {module:engine/model/node~NodeSet} nodes Objects to normalize.\n * @returns {Array.<module:engine/model/node~Node>} Normalized nodes.\n */\nexport function normalizeNodes( nodes ) {\n\tconst normalized = [];\n\n\tif ( !( nodes instanceof Array ) ) {\n\t\tnodes = [ nodes ];\n\t}\n\n\t// Convert instances of classes other than Node.\n\tfor ( let i = 0; i < nodes.length; i++ ) {\n\t\tif ( typeof nodes[ i ] == 'string' ) {\n\t\t\tnormalized.push( new Text( nodes[ i ] ) );\n\t\t} else if ( nodes[ i ] instanceof TextProxy ) {\n\t\t\tnormalized.push( new Text( nodes[ i ].data, nodes[ i ].getAttributes() ) );\n\t\t} else if ( nodes[ i ] instanceof DocumentFragment || nodes[ i ] instanceof NodeList ) {\n\t\t\tfor ( let child of nodes[ i ] ) {\n\t\t\t\tnormalized.push( child );\n\t\t\t}\n\t\t} else if ( nodes[ i ] instanceof Node ) {\n\t\t\tnormalized.push( nodes[ i ] );\n\t\t}\n\t\t// Skip unrecognized type.\n\t}\n\n\t// Merge text nodes.\n\tfor ( let i = 1; i < normalized.length; i++ ) {\n\t\tconst node = normalized[ i ];\n\t\tconst prev = normalized[ i - 1 ];\n\n\t\tif ( node instanceof Text && prev instanceof Text && _haveSameAttributes( node, prev ) ) {\n\t\t\t// Doing this instead changing prev.data because .data is readonly.\n\t\t\tnormalized.splice( i - 1, 2, new Text( prev.data + node.data, prev.getAttributes() ) );\n\t\t\ti--;\n\t\t}\n\t}\n\n\treturn normalized;\n}\n\n/**\n * Checks if nodes before and after given index in given element are {@link module:engine/model/text~Text text nodes} and\n * merges them into one node if they have same attributes.\n *\n * Merging is done by removing two text nodes and inserting a new text node containing data from both merged text nodes.\n *\n * @ignore\n * @private\n * @param {module:engine/model/element~Element} element Parent element of nodes to merge.\n * @param {Number} index Index between nodes to merge.\n */\nfunction _mergeNodesAtIndex( element, index ) {\n\tconst nodeBefore = element.getChild( index - 1 );\n\tconst nodeAfter = element.getChild( index );\n\n\t// Check if both of those nodes are text objects with same attributes.\n\tif ( nodeBefore && nodeAfter && nodeBefore.is( 'text' ) && nodeAfter.is( 'text' ) && _haveSameAttributes( nodeBefore, nodeAfter ) ) {\n\t\t// Append text of text node after index to the before one.\n\t\tconst mergedNode = new Text( nodeBefore.data + nodeAfter.data, nodeBefore.getAttributes() );\n\n\t\t// Remove separate text nodes.\n\t\telement.removeChildren( index - 1, 2 );\n\n\t\t// Insert merged text node.\n\t\telement.insertChildren( index - 1, mergedNode );\n\t}\n}\n\n/**\n * Checks if given position is in a text node, and if so, splits the text node in two text nodes, each of them\n * containing a part of original text node.\n *\n * @ignore\n * @private\n * @param {module:engine/model/position~Position} position Position at which node should be split.\n */\nfunction _splitNodeAtPosition( position ) {\n\tconst textNode = position.textNode;\n\tconst element = position.parent;\n\n\tif ( textNode ) {\n\t\tconst offsetDiff = position.offset - textNode.startOffset;\n\t\tconst index = textNode.index;\n\n\t\telement.removeChildren( index, 1 );\n\n\t\tconst firstPart = new Text( textNode.data.substr( 0, offsetDiff ), textNode.getAttributes() );\n\t\tconst secondPart = new Text( textNode.data.substr( offsetDiff ), textNode.getAttributes() );\n\n\t\telement.insertChildren( index, [ firstPart, secondPart ] );\n\t}\n}\n\n/**\n * Checks whether two given nodes have same attributes.\n *\n * @ignore\n * @private\n * @param {module:engine/model/node~Node} nodeA Node to check.\n * @param {module:engine/model/node~Node} nodeB Node to check.\n * @returns {Boolean} `true` if nodes have same attributes, `false` otherwise.\n */\nfunction _haveSameAttributes( nodeA, nodeB ) {\n\tconst iteratorA = nodeA.getAttributes();\n\tconst iteratorB = nodeB.getAttributes();\n\n\tfor ( let attr of iteratorA ) {\n\t\tif ( attr[ 1 ] !== nodeB.getAttribute( attr[ 0 ] ) ) {\n\t\t\treturn false;\n\t\t}\n\n\t\titeratorB.next();\n\t}\n\n\treturn iteratorB.next().done;\n}\n\n/**\n * Value that can be normalized to an array of {@link module:engine/model/node~Node nodes}.\n *\n * Non-arrays are normalized as follows:\n * * {@link module:engine/model/node~Node Node} is left as is,\n * * {@link module:engine/model/textproxy~TextProxy TextProxy} and `String` are normalized to {@link module:engine/model/text~Text Text},\n * * {@link module:engine/model/nodelist~NodeList NodeList} is normalized to an array containing all nodes that are in that node list,\n * * {@link module:engine/model/documentfragment~DocumentFragment DocumentFragment} is normalized to an array containing all of it's\n * * children.\n *\n * Arrays are processed item by item like non-array values and flattened to one array. Normalization always results in\n * a flat array of {@link module:engine/model/node~Node nodes}. Consecutive text nodes (or items normalized to text nodes) will be\n * merged if they have same attributes.\n *\n * @typedef {module:engine/model/node~Node|module:engine/model/textproxy~TextProxy|String|\n * module:engine/model/nodelist~NodeList|module:engine/model/documentfragment~DocumentFragment|Iterable}\n * module:engine/model/node~NodeSet\n */\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/writer.js\n// module id = 13\n// module chunks = 0","import isArrayLike from './isArrayLike';\nimport isObjectLike from './isObjectLike';\n\n/**\n * This method is like `_.isArrayLike` except that it also checks if `value`\n * is an object.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an array-like object,\n *  else `false`.\n * @example\n *\n * _.isArrayLikeObject([1, 2, 3]);\n * // => true\n *\n * _.isArrayLikeObject(document.body.children);\n * // => true\n *\n * _.isArrayLikeObject('abc');\n * // => false\n *\n * _.isArrayLikeObject(_.noop);\n * // => false\n */\nfunction isArrayLikeObject(value) {\n  return isObjectLike(value) && isArrayLike(value);\n}\n\nexport default isArrayLikeObject;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/isArrayLikeObject.js\n// module id = 14\n// module chunks = 0","/**\n * Checks if `value` is the\n * [language type](http://www.ecma-international.org/ecma-262/6.0/#sec-ecmascript-language-types)\n * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an object, else `false`.\n * @example\n *\n * _.isObject({});\n * // => true\n *\n * _.isObject([1, 2, 3]);\n * // => true\n *\n * _.isObject(_.noop);\n * // => true\n *\n * _.isObject(null);\n * // => false\n */\nfunction isObject(value) {\n  var type = typeof value;\n  return !!value && (type == 'object' || type == 'function');\n}\n\nexport default isObject;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/isObject.js\n// module id = 15\n// module chunks = 0","import toFinite from './toFinite';\n\n/**\n * Converts `value` to an integer.\n *\n * **Note:** This function is loosely based on\n * [`ToInteger`](http://www.ecma-international.org/ecma-262/6.0/#sec-tointeger).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {number} Returns the converted integer.\n * @example\n *\n * _.toInteger(3.2);\n * // => 3\n *\n * _.toInteger(Number.MIN_VALUE);\n * // => 0\n *\n * _.toInteger(Infinity);\n * // => 1.7976931348623157e+308\n *\n * _.toInteger('3.2');\n * // => 3\n */\nfunction toInteger(value) {\n  var result = toFinite(value),\n      remainder = result % 1;\n\n  return result === result ? (remainder ? result - remainder : result) : 0;\n}\n\nexport default toInteger;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/toInteger.js\n// module id = 16\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/batch\n */\n\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/**\n * `Batch` instance groups document changes ({@link module:engine/model/delta/delta~Delta deltas}). All deltas grouped in a single `Batch`\n * can be reverted together, so you can think about `Batch` as of a single undo step. If you want to extend given undo step you\n * can call another method on the same `Batch` object. If you want to create a separate undo step you can create a new `Batch`.\n *\n * For example to create two separate undo steps you can call:\n *\n *\t\tdoc.batch().insert( firstPosition, 'foo' );\n *\t\tdoc.batch().insert( secondPosition, 'bar' );\n *\n * To create a single undo step:\n *\n *\t\tconst batch = doc.batch();\n *\t\tbatch.insert( firstPosition, 'foo' );\n *\t\tbatch.insert( secondPosition, 'bar' );\n *\n * Note that all document modification methods (insert, remove, split, etc.) are chainable so you can shorten code to:\n *\n *\t\tdoc.batch().insert( firstPosition, 'foo' ).insert( secondPosition, 'bar' );\n */\nexport default class Batch {\n\t/**\n\t * Creates `Batch` instance. Not recommended to use directly, use {@link module:engine/model/document~Document#batch} instead.\n\t *\n\t * @param {module:engine/model/document~Document} document Document which this Batch changes.\n\t * @param {'transparent'|'default'} [type='default'] Type of the batch.\n\t */\n\tconstructor( document, type = 'default' ) {\n\t\t/**\n\t\t * Document which this batch changes.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/model/document~Document} module:engine/model/batch~Batch#document\n\t\t */\n\t\tthis.document = document;\n\n\t\t/**\n\t\t * Array of deltas which compose this batch.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Array.<module:engine/model/delta/delta~Delta>} module:engine/model/batch~Batch#deltas\n\t\t */\n\t\tthis.deltas = [];\n\n\t\t/**\n\t\t * Type of the batch.\n\t\t *\n\t\t * Can be one of the following values:\n\t\t * * `'default'` - all \"normal\" batches, most commonly used type.\n\t\t * * `'transparent'` - batch that should be ignored by other features, i.e. initial batch or collaborative editing changes.\n\t\t *\n\t\t * @readonly\n\t\t * @member {'transparent'|'default'} module:engine/model/batch~Batch#type\n\t\t */\n\t\tthis.type = type;\n\t}\n\n\t/**\n\t * Returns this batch base version, which is equal to the base version of first delta in the batch.\n\t * If there are no deltas in the batch, it returns `null`.\n\t *\n\t * @readonly\n\t * @type {Number|null}\n\t */\n\tget baseVersion() {\n\t\treturn this.deltas.length > 0 ? this.deltas[ 0 ].baseVersion : null;\n\t}\n\n\t/**\n\t * Adds delta to the batch instance. All modification methods (insert, remove, split, etc.) use this method\n\t * to add created deltas.\n\t *\n\t * @param {module:engine/model/delta/delta~Delta} delta Delta to add.\n\t * @return {module:engine/model/delta/delta~Delta} Added delta.\n\t */\n\taddDelta( delta ) {\n\t\tdelta.batch = this;\n\t\tthis.deltas.push( delta );\n\n\t\treturn delta;\n\t}\n\n\t/**\n\t * Gets an iterable collection of operations.\n\t *\n\t * @returns {Iterable.<module:engine/model/operation/operation~Operation>}\n\t */\n\t*getOperations() {\n\t\tfor ( let delta of this.deltas ) {\n\t\t\tyield* delta.operations;\n\t\t}\n\t}\n}\n\n/**\n * Function to register batch methods. To make code scalable `Batch` do not have modification\n * methods built in. They can be registered using this method.\n *\n * This method checks if there is no naming collision and throws `batch-register-taken` if the method name\n * is already taken.\n *\n * Besides that no magic happens here, the method is added to the `Batch` class prototype.\n *\n * For example:\n *\n *\t\tBatch.register( 'insert', function( position, nodes ) {\n *\t\t\t// You can use a class inheriting from `Delta` if that class should handle OT in a special way.\n *\t\t\tconst delta = new Delta();\n *\n *\t\t\t// Add delta to the Batch instance. It is important to add a delta to the batch before applying any operation.\n *\t\t\tthis.addDelta( delta );\n *\n *\t\t\t// Create operations which should be components of this delta.\n *\t\t\tconst operation = new InsertOperation( position, nodes, this.document.version );\n *\n *\t\t\t// Add operation to the delta. It is important to add operation before applying it.\n *\t\t\tdelta.addOperation( operation );\n *\n *\t\t\t// Remember to apply every operation, no magic, you need to do it manually.\n *\t\t\tthis.document.applyOperation( operation );\n *\n *\t\t\t// Make this method chainable.\n *\t\t\treturn this;\n *\t\t} );\n *\n * @method module:engine/model/batch~Batch.register\n * @param {String} name Method name.\n * @param {Function} creator Method body.\n */\nexport function register( name, creator ) {\n\tif ( Batch.prototype[ name ] ) {\n\t\t/**\n\t\t * This batch method name is already taken.\n\t\t *\n\t\t * @error batch-register-taken\n\t\t * @param {String} name\n\t\t */\n\t\tthrow new CKEditorError(\n\t\t\t'model-batch-register-taken: This batch method name is already taken.',\n\t\t\t{ name: name } );\n\t}\n\n\tBatch.prototype[ name ] = creator;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/batch.js\n// module id = 17\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/delta/deltafactory\n */\n\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\nimport OperationFactory from '../operation/operationfactory';\n\nconst deserializers = new Map();\n\n/**\n * A factory class for creating operations.\n *\n * Delta is a single, from the user action point of view, change in the editable document, like insert, split or\n * rename element. Delta is composed of operations, which are unit changes needed to be done to execute user action.\n *\n * Multiple deltas are grouped into a single {@link module:engine/model/batch~Batch}.\n */\nexport default class DeltaFactory {\n\t/**\n\t * Creates InsertDelta from deserialized object, i.e. from parsed JSON string.\n\t *\n\t * @param {Object} json\n\t * @param {module:engine/model/document~Document} doc Document on which this delta will be applied.\n\t * @returns {module:engine/model/delta/insertdelta~InsertDelta}\n\t */\n\tstatic fromJSON( json, doc ) {\n\t\tif ( !deserializers.has( json.__className ) ) {\n\t\t\t/**\n\t\t\t * This delta has no defined deserializer.\n\t\t\t *\n\t\t\t * @error delta-fromjson-no-deserializer\n\t\t\t * @param {String} name\n\t\t\t */\n\t\t\tthrow new CKEditorError(\n\t\t\t\t'delta-fromjson-no-deserializer: This delta has no defined deserializer',\n\t\t\t\t{ name: json.__className }\n\t\t\t);\n\t\t}\n\n\t\tlet Delta = deserializers.get( json.__className );\n\n\t\tlet delta = new Delta();\n\n\t\tfor ( let operation of json.operations ) {\n\t\t\tdelta.addOperation( OperationFactory.fromJSON( operation, doc ) );\n\t\t}\n\n\t\treturn delta;\n\t}\n\n\t/**\n\t * Registers a class for delta factory.\n\t *\n\t * @param {Function} Delta A delta class to register.\n\t */\n\tstatic register( Delta ) {\n\t\tdeserializers.set( Delta.className, Delta );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/delta/deltafactory.js\n// module id = 18\n// module chunks = 0","/**\n * Gets the last element of `array`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to query.\n * @returns {*} Returns the last element of `array`.\n * @example\n *\n * _.last([1, 2, 3]);\n * // => 3\n */\nfunction last(array) {\n  var length = array ? array.length : 0;\n  return length ? array[length - 1] : undefined;\n}\n\nexport default last;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/last.js\n// module id = 19\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/delta/delta\n */\n\nimport clone from '@ckeditor/ckeditor5-utils/src/lib/lodash/clone';\nimport DeltaFactory from './deltafactory';\n\n/**\n * Base class for all deltas.\n *\n * Delta is a single, from the user action point of view, change in the editable document, like insert, split or\n * rename element. Delta is composed of operations, which are unit changes needed to be done to execute user action.\n *\n * Multiple deltas are grouped into a single {@link module:engine/model/batch~Batch}.\n */\nexport default class Delta {\n\t/**\n\t * Creates a delta instance.\n\t */\n\tconstructor() {\n\t\t/**\n\t\t * {@link module:engine/model/batch~Batch} which delta is a part of. This property is null by default and set by the\n\t\t * {@link module:engine/model/batch~Batch#addDelta} method.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/model/batch~Batch} module:engine/model/delta/delta~Delta#batch\n\t\t */\n\t\tthis.batch = null;\n\n\t\t/**\n\t\t * Array of operations which compose delta.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/model/operation/operation~Operation[]} module:engine/model/delta/delta~Delta#operations\n\t\t */\n\t\tthis.operations = [];\n\t}\n\n\t/**\n\t * Returns delta base version which is equal to the base version of the first operation in delta. If there\n\t * are no operations in delta, returns `null`.\n\t *\n\t * @see module:engine/model/document~Document\n\t * @type {Number|null}\n\t */\n\tget baseVersion() {\n\t\tif ( this.operations.length > 0 ) {\n\t\t\treturn this.operations[ 0 ].baseVersion;\n\t\t}\n\n\t\treturn null;\n\t}\n\n\t/**\n\t * @param {Number} baseVersion\n\t */\n\tset baseVersion( baseVersion ) {\n\t\tfor ( let operation of this.operations ) {\n\t\t\toperation.baseVersion = baseVersion++;\n\t\t}\n\t}\n\n\t/**\n\t * A class that will be used when creating reversed delta.\n\t *\n\t * @private\n\t * @type {Function}\n\t */\n\tget _reverseDeltaClass() {\n\t\treturn Delta;\n\t}\n\n\t/**\n\t * Delta type.\n\t *\n\t * @readonly\n\t * @member {String} #type\n\t */\n\n\t/**\n\t * Add operation to the delta.\n\t *\n\t * @param {module:engine/model/operation/operation~Operation} operation Operation instance.\n\t */\n\taddOperation( operation ) {\n\t\toperation.delta = this;\n\t\tthis.operations.push( operation );\n\n\t\treturn operation;\n\t}\n\n\t/**\n\t * Creates and returns a delta that has the same parameters as this delta.\n\t *\n\t * @returns {module:engine/model/delta/delta~Delta} Clone of this delta.\n\t */\n\tclone() {\n\t\tlet delta = new this.constructor();\n\n\t\tfor ( let op of this.operations ) {\n\t\t\tdelta.addOperation( op.clone() );\n\t\t}\n\n\t\treturn delta;\n\t}\n\n\t/**\n\t * Creates and returns a reverse delta. Reverse delta when executed right after the original delta will bring back\n\t * tree model state to the point before the original delta execution. In other words, it reverses changes done\n\t * by the original delta.\n\t *\n\t * Keep in mind that tree model state may change since executing the original delta, so reverse delta may be \"outdated\".\n\t * In that case you will need to {@link module:engine/model/delta/transform~transform} it by all deltas that were executed after\n\t * the original delta.\n\t *\n\t * @returns {module:engine/model/delta/delta~Delta} Reversed delta.\n\t */\n\tgetReversed() {\n\t\tlet delta = new this._reverseDeltaClass();\n\n\t\tfor ( let op of this.operations ) {\n\t\t\tdelta.addOperation( op.getReversed() );\n\t\t}\n\n\t\tdelta.operations.reverse();\n\n\t\tfor ( let i = 0; i < delta.operations.length; i++ ) {\n\t\t\tdelta.operations[ i ].baseVersion = this.operations[ this.operations.length - 1 ].baseVersion + i + 1;\n\t\t}\n\n\t\treturn delta;\n\t}\n\n\t/**\n\t * Custom toJSON method to make deltas serializable.\n\t *\n\t * @returns {Object} Clone of this delta with added class name.\n\t */\n\ttoJSON() {\n\t\tlet json = clone( this );\n\n\t\tjson.__className = this.constructor.className;\n\n\t\t// Remove parent batch to avoid circular dependencies.\n\t\tdelete json.batch;\n\n\t\treturn json;\n\t}\n\n\t/**\n\t * Delta class name. Used by {@link #toJSON} method for serialization and\n\t * {@link module:engine/model/delta/deltafactory~DeltaFactory.fromJSON} during deserialization.\n\t *\n\t * @type {String}\n\t * @readonly\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.delta.Delta';\n\t}\n\n\t/**\n\t * Delta priority. Used in {@link module:engine/model/delta/transform~transform delta transformations}. Delta with the higher\n\t * priority will be treated as more important when resolving transformation conflicts. If deltas have same\n\t * priority, other factors will be used to determine which delta is more important.\n\t *\n\t * @private\n\t * @type {Number}\n\t */\n\tstatic get _priority() {\n\t\treturn 0;\n\t}\n}\n\nDeltaFactory.register( Delta );\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/delta/delta.js\n// module id = 20\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/element\n */\n\nimport Node from './node';\nimport Text from './text';\nimport objectToMap from '@ckeditor/ckeditor5-utils/src/objecttomap';\nimport isIterable from '@ckeditor/ckeditor5-utils/src/isiterable';\nimport isPlainObject from '@ckeditor/ckeditor5-utils/src/lib/lodash/isPlainObject';\nimport Matcher from './matcher';\n\n/**\n * View element.\n *\n * Editing engine does not define fixed HTML DTD. This is why the type of the {@link module:engine/view/element~Element} need to\n * be defined by the feature developer. Creating an element you should use {@link module:engine/view/containerelement~ContainerElement}\n * class, {@link module:engine/view/attributeelement~AttributeElement} class or {@link module:engine/view/emptyelement~EmptyElement} class.\n *\n * Note that for view elements which are not created from model, like elements from mutations, paste or\n * {@link module:engine/controller/datacontroller~DataController#set data.set} it is not possible to define the type of the element, so\n * these will be instances of the {@link module:engine/view/element~Element}.\n *\n * @extends module:engine/view/node~Node\n */\nexport default class Element extends Node {\n\t/**\n\t * Creates a view element.\n\t *\n\t * Attributes can be passed in various formats:\n\t *\n\t *\t\tnew Element( 'div', { 'class': 'editor', 'contentEditable': 'true' } ); // object\n\t *\t\tnew Element( 'div', [ [ 'class', 'editor' ], [ 'contentEditable', 'true' ] ] ); // map-like iterator\n\t *\t\tnew Element( 'div', mapOfAttributes ); // map\n\t *\n\t * @param {String} name Node name.\n\t * @param {Object|Iterable} [attrs] Collection of attributes.\n\t * @param {module:engine/view/node~Node|Iterable.<module:engine/view/node~Node>} [children]\n\t * List of nodes to be inserted into created element.\n\t */\n\tconstructor( name, attrs, children ) {\n\t\tsuper();\n\n\t\t/**\n\t\t * Name of the element.\n\t\t *\n\t\t * @readonly\n\t\t * @member {String}\n\t\t */\n\t\tthis.name = name;\n\n\t\t/**\n\t\t * Map of attributes, where attributes names are keys and attributes values are values.\n\t\t *\n\t\t * @protected\n\t\t * @member {Map} #_attrs\n\t\t */\n\t\tif ( isPlainObject( attrs ) ) {\n\t\t\tthis._attrs = objectToMap( attrs );\n\t\t} else {\n\t\t\tthis._attrs = new Map( attrs );\n\t\t}\n\n\t\t/**\n\t\t * Array of child nodes.\n\t\t *\n\t\t * @protected\n\t\t * @member {Array.<module:engine/view/node~Node>}\n\t\t */\n\t\tthis._children = [];\n\n\t\tif ( children ) {\n\t\t\tthis.insertChildren( 0, children );\n\t\t}\n\n\t\t/**\n\t\t * Set of classes associated with element instance.\n\t\t *\n\t\t * @protected\n\t\t * @member {Set}\n\t\t */\n\t\tthis._classes = new Set();\n\n\t\tif ( this._attrs.has( 'class' ) ) {\n\t\t\t// Remove class attribute and handle it by class set.\n\t\t\tconst classString = this._attrs.get( 'class' );\n\t\t\tparseClasses( this._classes, classString );\n\t\t\tthis._attrs.delete( 'class' );\n\t\t}\n\n\t\t/**\n\t\t * Map of styles.\n\t\t *\n\t\t * @protected\n\t\t * @member {Set} module:engine/view/element~Element#_styles\n\t\t */\n\t\tthis._styles = new Map();\n\n\t\tif ( this._attrs.has( 'style' ) ) {\n\t\t\t// Remove style attribute and handle it by styles map.\n\t\t\tparseInlineStyles( this._styles, this._attrs.get( 'style' ) );\n\t\t\tthis._attrs.delete( 'style' );\n\t\t}\n\n\t\t/**\n\t\t * Map of custom properties.\n\t\t * Custom properties can be added to element instance, will be cloned but not rendered into DOM.\n\t\t *\n\t\t * @protected\n\t\t * @memeber {Map}\n\t\t */\n\t\tthis._customProperties = new Map();\n\t}\n\n\t/**\n\t * Number of element's children.\n\t *\n\t * @readonly\n\t * @type {Number}\n\t */\n\tget childCount() {\n\t\treturn this._children.length;\n\t}\n\n\t/**\n\t * Is `true` if there are no nodes inside this element, `false` otherwise.\n\t *\n\t * @readonly\n\t * @type {Boolean}\n\t */\n\tget isEmpty() {\n\t\treturn this._children.length === 0;\n\t}\n\n\t/**\n\t * Checks whether given view tree object is of given type.\n\t *\n\t * Read more in {@link module:engine/view/node~Node#is}.\n\t *\n\t * @param {String} type\n\t * @param {String} [name] Element name.\n\t * @returns {Boolean}\n\t */\n\tis( type, name = null ) {\n\t\tif ( !name ) {\n\t\t\treturn type == 'element' || type == this.name;\n\t\t} else {\n\t\t\treturn type == 'element' && name == this.name;\n\t\t}\n\t}\n\n\t/**\n\t * Clones provided element.\n\t *\n\t * @param {Boolean} deep If set to `true` clones element and all its children recursively. When set to `false`,\n\t * element will be cloned without any children.\n\t * @returns {module:engine/view/element~Element} Clone of this element.\n\t */\n\tclone( deep ) {\n\t\tconst childrenClone = [];\n\n\t\tif ( deep ) {\n\t\t\tfor ( let child of this.getChildren() ) {\n\t\t\t\tchildrenClone.push( child.clone( deep ) );\n\t\t\t}\n\t\t}\n\n\t\t// ContainerElement and AttributeElement should be also cloned properly.\n\t\tconst cloned = new this.constructor( this.name, this._attrs, childrenClone );\n\n\t\t// Classes and styles are cloned separately - this solution is faster than adding them back to attributes and\n\t\t// parse once again in constructor.\n\t\tcloned._classes = new Set( this._classes );\n\t\tcloned._styles = new Map( this._styles );\n\n\t\t// Clone custom properties.\n\t\tcloned._customProperties = new Map( this._customProperties );\n\n\t\t// Clone filler offset method.\n\t\tcloned.getFillerOffset = this.getFillerOffset;\n\n\t\treturn cloned;\n\t}\n\n\t/**\n\t * {@link module:engine/view/element~Element#insertChildren Insert} a child node or a list of child nodes at the end of this node and sets\n\t * the parent of these nodes to this element.\n\t *\n\t * @fires module:engine/view/node~Node#change\n\t * @param {module:engine/view/node~Node|Iterable.<module:engine/view/node~Node>} nodes Node or the list of nodes to be inserted.\n\t * @returns {Number} Number of appended nodes.\n\t */\n\tappendChildren( nodes ) {\n\t\treturn this.insertChildren( this.childCount, nodes );\n\t}\n\n\t/**\n\t * Gets child at the given index.\n\t *\n\t * @param {Number} index Index of child.\n\t * @returns {module:engine/view/node~Node} Child node.\n\t */\n\tgetChild( index ) {\n\t\treturn this._children[ index ];\n\t}\n\n\t/**\n\t * Gets index of the given child node. Returns `-1` if child node is not found.\n\t *\n\t * @param {module:engine/view/node~Node} node Child node.\n\t * @returns {Number} Index of the child node.\n\t */\n\tgetChildIndex( node ) {\n\t\treturn this._children.indexOf( node );\n\t}\n\n\t/**\n\t * Gets child nodes iterator.\n\t *\n\t * @returns {Iterable.<module:engine/view/node~Node>} Child nodes iterator.\n\t */\n\tgetChildren() {\n\t\treturn this._children[ Symbol.iterator ]();\n\t}\n\n\t/**\n\t * Returns an iterator that contains the keys for attributes. Order of inserting attributes is not preserved.\n\t *\n\t * @returns {Iterator.<String>} Keys for attributes.\n\t */\n\t*getAttributeKeys() {\n\t\tif ( this._classes.size > 0 ) {\n\t\t\tyield 'class';\n\t\t}\n\n\t\tif ( this._styles.size > 0 ) {\n\t\t\tyield 'style';\n\t\t}\n\n\t\t// This is not an optimal solution because of https://github.com/ckeditor/ckeditor5-engine/issues/454.\n\t\t// It can be simplified to `yield* this._attrs.keys();`.\n\t\tfor ( let key of this._attrs.keys() ) {\n\t\t\tyield key;\n\t\t}\n\t}\n\n\t/**\n\t * Returns iterator that iterates over this element's attributes.\n\t *\n\t * Attributes are returned as arrays containing two items. First one is attribute key and second is attribute value.\n\t * This format is accepted by native `Map` object and also can be passed in `Node` constructor.\n\t *\n\t * @returns {Iterable.<*>}\n\t */\n\t*getAttributes() {\n\t\tyield* this._attrs.entries();\n\n\t\tif ( this._classes.size > 0 ) {\n\t\t\tyield [ 'class', this.getAttribute( 'class' ) ];\n\t\t}\n\n\t\tif ( this._styles.size > 0 ) {\n\t\t\tyield [ 'style', this.getAttribute( 'style' ) ];\n\t\t}\n\t}\n\n\t/**\n\t * Gets attribute by key. If attribute is not present - returns undefined.\n\t *\n\t * @param {String} key Attribute key.\n\t * @returns {String|undefined} Attribute value.\n\t */\n\tgetAttribute( key ) {\n\t\tif ( key == 'class' ) {\n\t\t\tif ( this._classes.size > 0 ) {\n\t\t\t\treturn [ ...this._classes ].join( ' ' );\n\t\t\t}\n\n\t\t\treturn undefined;\n\t\t}\n\n\t\tif ( key == 'style' ) {\n\t\t\tif ( this._styles.size > 0 ) {\n\t\t\t\tlet styleString = '';\n\n\t\t\t\tfor ( let [ property, value ] of this._styles ) {\n\t\t\t\t\tstyleString += `${ property }:${ value };`;\n\t\t\t\t}\n\n\t\t\t\treturn styleString;\n\t\t\t}\n\n\t\t\treturn undefined;\n\t\t}\n\n\t\treturn this._attrs.get( key );\n\t}\n\n\t/**\n\t * Returns a boolean indicating whether an attribute with the specified key exists in the element.\n\t *\n\t * @param {String} key Attribute key.\n\t * @returns {Boolean} `true` if attribute with the specified key exists in the element, false otherwise.\n\t */\n\thasAttribute( key ) {\n\t\tif ( key == 'class' ) {\n\t\t\treturn this._classes.size  > 0;\n\t\t}\n\n\t\tif ( key == 'style' ) {\n\t\t\treturn this._styles.size > 0;\n\t\t}\n\n\t\treturn this._attrs.has( key );\n\t}\n\n\t/**\n\t * Adds or overwrite attribute with a specified key and value.\n\t *\n\t * @param {String} key Attribute key.\n\t * @param {String} value Attribute value.\n\t * @fires module:engine/view/node~Node#change\n\t */\n\tsetAttribute( key, value ) {\n\t\tthis._fireChange( 'attributes', this );\n\n\t\tif ( key == 'class' ) {\n\t\t\tparseClasses( this._classes, value );\n\t\t} else if ( key == 'style' ) {\n\t\t\tparseInlineStyles( this._styles, value );\n\t\t} else {\n\t\t\tthis._attrs.set( key, value );\n\t\t}\n\t}\n\n\t/**\n\t * Inserts a child node or a list of child nodes on the given index and sets the parent of these nodes to\n\t * this element.\n\t *\n\t * @param {Number} index Position where nodes should be inserted.\n\t * @param {module:engine/view/node~Node|Iterable.<module:engine/view/node~Node>} nodes Node or the list of nodes to be inserted.\n\t * @fires module:engine/view/node~Node#change\n\t * @returns {Number} Number of inserted nodes.\n\t */\n\tinsertChildren( index, nodes ) {\n\t\tthis._fireChange( 'children', this );\n\t\tlet count = 0;\n\n\t\tnodes = normalize( nodes );\n\n\t\tfor ( let node of nodes ) {\n\t\t\tnode.parent = this;\n\n\t\t\tthis._children.splice( index, 0, node );\n\t\t\tindex++;\n\t\t\tcount++;\n\t\t}\n\n\t\treturn count;\n\t}\n\n\t/**\n\t * Removes attribute from the element.\n\t *\n\t * @param {String} key Attribute key.\n\t * @returns {Boolean} Returns true if an attribute existed and has been removed.\n\t * @fires module:engine/view/node~Node#change\n\t */\n\tremoveAttribute( key ) {\n\t\tthis._fireChange( 'attributes', this );\n\n\t\t// Remove class attribute.\n\t\tif ( key == 'class' ) {\n\t\t\tif ( this._classes.size > 0 ) {\n\t\t\t\tthis._classes.clear();\n\n\t\t\t\treturn true;\n\t\t\t}\n\n\t\t\treturn false;\n\t\t}\n\n\t\t// Remove style attribute.\n\t\tif ( key == 'style' ) {\n\t\t\tif ( this._styles.size > 0 ) {\n\t\t\t\tthis._styles.clear();\n\n\t\t\t\treturn true;\n\t\t\t}\n\n\t\t\treturn false;\n\t\t}\n\n\t\t// Remove other attributes.\n\t\treturn this._attrs.delete( key );\n\t}\n\n\t/**\n\t * Removes number of child nodes starting at the given index and set the parent of these nodes to `null`.\n\t *\n\t * @param {Number} index Number of the first node to remove.\n\t * @param {Number} [howMany=1] Number of nodes to remove.\n\t * @returns {Array.<module:engine/view/node~Node>} The array of removed nodes.\n\t * @fires module:engine/view/node~Node#change\n\t */\n\tremoveChildren( index, howMany = 1 ) {\n\t\tthis._fireChange( 'children', this );\n\n\t\tfor ( let i = index; i < index + howMany; i++ ) {\n\t\t\tthis._children[ i ].parent = null;\n\t\t}\n\n\t\treturn this._children.splice( index, howMany );\n\t}\n\n\t/**\n\t * Checks if this element is similar to other element.\n\t * Both elements should have the same name and attributes to be considered as similar. Two similar elements\n\t * can contain different set of children nodes.\n\t *\n\t * @param {module:engine/view/element~Element} otherElement\n\t * @returns {Boolean}\n\t */\n\tisSimilar( otherElement ) {\n\t\tif ( !( otherElement instanceof Element ) ) {\n\t\t\treturn false;\n\t\t}\n\n\t\t// If exactly the same Element is provided - return true immediately.\n\t\tif ( this === otherElement ) {\n\t\t\treturn true;\n\t\t}\n\n\t\t// Check element name.\n\t\tif ( this.name != otherElement.name ) {\n\t\t\treturn false;\n\t\t}\n\n\t\t// Check number of attributes, classes and styles.\n\t\tif ( this._attrs.size !== otherElement._attrs.size || this._classes.size !== otherElement._classes.size ||\n\t\t\tthis._styles.size !== otherElement._styles.size ) {\n\t\t\treturn false;\n\t\t}\n\n\t\t// Check if attributes are the same.\n\t\tfor ( let [ key, value ] of this._attrs ) {\n\t\t\tif ( !otherElement._attrs.has( key ) || otherElement._attrs.get( key ) !== value ) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t}\n\n\t\t// Check if classes are the same.\n\t\tfor ( let className of this._classes ) {\n\t\t\tif ( !otherElement._classes.has( className ) ) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t}\n\n\t\t// Check if styles are the same.\n\t\tfor ( let [ property, value ] of this._styles ) {\n\t\t\tif ( !otherElement._styles.has( property ) || otherElement._styles.get( property ) !== value ) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t}\n\n\t\treturn true;\n\t}\n\n\t/**\n\t * Adds specified class.\n\t *\n\t *\t\telement.addClass( 'foo' ); // Adds 'foo' class.\n\t *\t\telement.addClass( 'foo', 'bar' ); // Adds 'foo' and 'bar' classes.\n\t *\n\t * @param {...String} className\n\t * @fires module:engine/view/node~Node#change\n\t */\n\taddClass( ...className ) {\n\t\tthis._fireChange( 'attributes', this );\n\t\tclassName.forEach( name => this._classes.add( name ) );\n\t}\n\n\t/**\n\t * Removes specified class.\n\t *\n \t *\t\telement.removeClass( 'foo' );  // Removes 'foo' class.\n\t *\t\telement.removeClass( 'foo', 'bar' ); // Removes both 'foo' and 'bar' classes.\n\t *\n\t * @param {...String} className\n\t * @fires module:engine/view/node~Node#change\n\t */\n\tremoveClass( ...className ) {\n\t\tthis._fireChange( 'attributes', this );\n\t\tclassName.forEach( name => this._classes.delete( name ) );\n\t}\n\n\t/**\n\t * Returns true if class is present.\n\t * If more then one class is provided - returns true only when all classes are present.\n\t *\n\t *\t\telement.hasClass( 'foo' ); // Returns true if 'foo' class is present.\n\t *\t\telement.hasClass( 'foo', 'bar' ); // Returns true if 'foo' and 'bar' classes are both present.\n\t *\n\t * @param {...String} className\n\t */\n\thasClass( ...className ) {\n\t\tfor ( let name of className ) {\n\t\t\tif ( !this._classes.has( name ) ) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t}\n\n\t\treturn true;\n\t}\n\n\t/**\n\t * Returns iterator that contains all class names.\n\t *\n\t * @returns {Iterator.<String>}\n\t */\n\tgetClassNames() {\n\t\treturn this._classes.keys();\n\t}\n\n\t/**\n\t * Adds style to the element.\n\t *\n\t *\t\telement.setStyle( 'color', 'red' );\n\t *\t\telement.setStyle( {\n\t *\t\t\tcolor: 'red',\n\t *\t\t\tposition: 'fixed'\n\t *\t\t} );\n\t *\n\t * @param {String|Object} property Property name or object with key - value pairs.\n\t * @param {String} [value] Value to set. This parameter is ignored if object is provided as the first parameter.\n\t * @fires module:engine/view/node~Node#change\n\t */\n\tsetStyle( property, value ) {\n\t\tthis._fireChange( 'attributes', this );\n\n\t\tif ( isPlainObject( property ) ) {\n\t\t\tconst keys = Object.keys( property );\n\n\t\t\tfor ( let key of keys ) {\n\t\t\t\tthis._styles.set( key, property[ key ] );\n\t\t\t}\n\t\t} else {\n\t\t\tthis._styles.set( property, value );\n\t\t}\n\t}\n\n\t/**\n\t * Returns style value for given property.\n\t * Undefined is returned if style does not exist.\n\t *\n\t * @param {String} property\n\t * @returns {String|undefined}\n\t */\n\tgetStyle( property ) {\n\t\treturn this._styles.get( property );\n\t}\n\n\t/**\n\t * Returns iterator that contains all style names.\n\t *\n\t * @returns {Iterator.<String>}\n\t */\n\tgetStyleNames() {\n\t\treturn this._styles.keys();\n\t}\n\n\t/**\n\t * Returns true if style keys are present.\n\t * If more then one style property is provided - returns true only when all properties are present.\n\t *\n\t *\t\telement.hasStyle( 'color' ); // Returns true if 'border-top' style is present.\n\t *\t\telement.hasStyle( 'color', 'border-top' ); // Returns true if 'color' and 'border-top' styles are both present.\n\t *\n\t * @param {...String} property\n\t */\n\thasStyle( ...property ) {\n\t\tfor ( let name of property ) {\n\t\t\tif ( !this._styles.has( name ) ) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t}\n\n\t\treturn true;\n\t}\n\n\t/**\n\t * Removes specified style.\n\t *\n\t *\t\telement.removeStyle( 'color' );  // Removes 'color' style.\n\t *\t\telement.removeStyle( 'color', 'border-top' ); // Removes both 'color' and 'border-top' styles.\n\t *\n\t * @param {...String} property\n\t * @fires module:engine/view/node~Node#change\n\t */\n\tremoveStyle( ...property ) {\n\t\tthis._fireChange( 'attributes', this );\n\t\tproperty.forEach( name => this._styles.delete( name ) );\n\t}\n\n\t/**\n\t * Returns ancestor element that match specified pattern.\n\t * Provided patterns should be compatible with {@link module:engine/view/matcher~Matcher Matcher} as it is used internally.\n\t *\n\t * @see module:engine/view/matcher~Matcher\n\t * @param {Object|String|RegExp|Function} patterns Patterns used to match correct ancestor.\n\t * See {@link module:engine/view/matcher~Matcher}.\n\t * @returns {module:engine/view/element~Element|null} Found element or `null` if no matching ancestor was found.\n\t */\n\tfindAncestor( ...patterns ) {\n\t\tconst matcher = new Matcher( ...patterns );\n\t\tlet parent = this.parent;\n\n\t\twhile ( parent ) {\n\t\t\tif ( matcher.match( parent ) ) {\n\t\t\t\treturn parent;\n\t\t\t}\n\n\t\t\tparent = parent.parent;\n\t\t}\n\n\t\treturn null;\n\t}\n\n\t/**\n\t * Sets a custom property. Unlike attributes, custom properties are not rendered to the DOM,\n\t * so they can be used to add special data to elements.\n\t *\n\t * @param {String|Symbol} key\n\t * @param {*} value\n\t */\n\tsetCustomProperty( key, value ) {\n\t\tthis._customProperties.set( key, value );\n\t}\n\n\t/**\n\t * Returns the custom property value for the given key.\n\t *\n\t * @param {String|Symbol} key\n\t * @returns {*}\n\t */\n\tgetCustomProperty( key ) {\n\t\treturn this._customProperties.get( key );\n\t}\n\n\t/**\n\t * Removes the custom property stored under the given key.\n\t *\n\t * @param {String|Symbol} key\n\t * @returns {Boolean} Returns true if property was removed.\n\t */\n\tremoveCustomProperty( key ) {\n\t\treturn this._customProperties.delete( key );\n\t}\n\n\t/**\n\t * Returns an iterator which iterates over this element's custom properties.\n\t * Iterator provides [key, value] pair for each stored property.\n\t *\n\t * @returns {Iterable.<*>}\n\t */\n\t*getCustomProperties() {\n\t\tyield* this._customProperties.entries();\n\t}\n\n\t/**\n\t * Returns block {@link module:engine/view/filler filler} offset or `null` if block filler is not needed.\n\t *\n\t * @abstract\n\t * @method module:engine/view/element~Element#getFillerOffset\n\t */\n}\n\n// Parses inline styles and puts property - value pairs into styles map.\n// Styles map is cleared before insertion.\n//\n// @param {Map.<String, String>} stylesMap Map to insert parsed properties and values.\n// @param {String} stylesString Styles to parse.\nfunction parseInlineStyles( stylesMap, stylesString ) {\n\tconst regex = /\\s*([^:;\\s]+)\\s*:\\s*([^;]+)\\s*(?=;|$)/g;\n\tlet matchStyle;\n\tstylesMap.clear();\n\n\twhile ( ( matchStyle = regex.exec( stylesString ) ) !== null ) {\n\t\tstylesMap.set( matchStyle[ 1 ], matchStyle[ 2 ].trim() );\n\t}\n}\n\n// Parses class attribute and puts all classes into classes set.\n// Classes set s cleared before insertion.\n//\n// @param {Set.<String>} classesSet Set to insert parsed classes.\n// @param {String} classesString String with classes to parse.\nfunction parseClasses( classesSet, classesString ) {\n\tconst classArray = classesString.split( /\\s+/ );\n\tclassesSet.clear();\n\tclassArray.forEach( name => classesSet.add( name ) );\n}\n\n// Converts strings to Text and non-iterables to arrays.\n//\n// @param {String|module:engine/view/node~Node|Iterable.<String|module:engine/view/node~Node>}\n// @return {Iterable.<module:engine/view/node~Node>}\nfunction normalize( nodes ) {\n\t// Separate condition because string is iterable.\n\tif ( typeof nodes == 'string' ) {\n\t\treturn [ new Text( nodes ) ];\n\t}\n\n\tif ( !isIterable( nodes ) ) {\n\t\tnodes = [ nodes ];\n\t}\n\n\t// Array.from to enable .map() on non-arrays.\n\treturn Array.from( nodes ).map( ( node ) => typeof node == 'string' ? new Text( node ) : node );\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/view/element.js\n// module id = 21\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/button/buttonview\n */\n\nimport View from '../view';\nimport Template from '../template';\nimport IconView from '../icon/iconview';\n\nimport { getEnvKeystrokeText } from '@ckeditor/ckeditor5-utils/src/keyboard';\n\n/**\n * The button view class.\n *\n * @extends module:ui/view~View\n */\nexport default class ButtonView extends View {\n\t/**\n\t * @inheritDoc\n\t */\n\tconstructor( locale ) {\n\t\tsuper( locale );\n\n\t\t/**\n\t\t * The label of the button view visible to the user.\n\t\t *\n\t\t * @observable\n\t\t * @member {String} #label\n\t\t */\n\t\tthis.set( 'label' );\n\n\t\t/**\n\t\t * (Optional) The keystroke associated with the button, i.e. <kbd>CTRL+B</kbd>,\n\t\t * in the string format compatible with {@link module:utils/keyboard}.\n\t\t *\n\t\t * @observable\n\t\t * @member {Boolean} #keystroke\n\t\t */\n\t\tthis.set( 'keystroke' );\n\n\t\t/**\n\t\t * (Optional) Tooltip of the button, i.e. displayed when hovering the button with the mouse cursor.\n\t\t *\n\t\t * * If defined as a `Boolean` (e.g. `true`), then combination of `label` and `keystroke` will be set as a tooltip.\n\t\t * * If defined as a `String`, tooltip will equal the exact text of that `String`.\n\t\t * * If defined as a `Function`, `label` and `keystroke` will be passed to that function, which is to return\n\t\t * a string with the tooltip text.\n\t\t *\n\t\t *\t\tconst view = new ButtonView( locale );\n\t\t *\t\tview.tooltip = ( label, keystroke ) => `A tooltip for ${ label } and ${ keystroke }.`\n\t\t *\n\t\t * @observable\n\t\t * @default false\n\t\t * @member {Boolean|String|Function} #tooltip\n\t\t */\n\t\tthis.set( 'tooltip' );\n\n\t\t/**\n\t\t * The HTML type of the button. Default `button`.\n\t\t *\n\t\t * @observable\n\t\t * @member {'button'|'submit'|'reset'|'menu'} #type\n\t\t */\n\t\tthis.set( 'type', 'button' );\n\n\t\t/**\n\t\t * Controls whether the button view is \"on\", e.g. some feature which it represents\n\t\t * is currently enabled.\n\t\t *\n\t\t * @observable\n\t\t * @member {Boolean} #isOn\n\t\t */\n\t\tthis.set( 'isOn', false );\n\n\t\t/**\n\t\t * Controls whether the button view is enabled (can be clicked).\n\t\t *\n\t\t * @observable\n\t\t * @member {Boolean} #isEnabled\n\t\t */\n\t\tthis.set( 'isEnabled', true );\n\n\t\t/**\n\t\t * (Optional) Whether the label of the button is hidden (e.g. button with icon only).\n\t\t *\n\t\t * @observable\n\t\t * @member {Boolean} #withText\n\t\t */\n\t\tthis.set( 'withText', false );\n\n\t\t/**\n\t\t * (Optional) Source of the icon. See {@link module:ui/icon/iconview~IconView#content}.\n\t\t *\n\t\t * @observable\n\t\t * @member {String} #icon\n\t\t */\n\t\tthis.set( 'icon' );\n\n\t\t/**\n\t\t * Controls the `tabindex` attribute of the button.\n\t\t *\n\t\t * @observable\n\t\t * @default -1\n\t\t * @member {String} #tabindex\n\t\t */\n\t\tthis.set( 'tabindex', -1 );\n\n\t\t/**\n\t\t * Tooltip of the button bound to the template.\n\t\t *\n\t\t * @see #tooltip\n\t\t * @see #_getTooltipString\n\t\t * @private\n\t\t * @observable\n\t\t * @member {Boolean} #_tooltipString\n\t\t */\n\t\tthis.bind( '_tooltipString' ).to(\n\t\t\tthis, 'tooltip',\n\t\t\tthis, 'label',\n\t\t\tthis, 'keystroke',\n\t\t\tthis._getTooltipString.bind( this )\n\t\t);\n\n\t\t/**\n\t\t * Icon of the button view.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:ui/icon/iconview~IconView} #iconView\n\t\t */\n\n\t\tconst bind = this.bindTemplate;\n\n\t\tthis.template = new Template( {\n\t\t\ttag: 'button',\n\n\t\t\tattributes: {\n\t\t\t\tclass: [\n\t\t\t\t\t'ck-button',\n\t\t\t\t\tbind.if( '_tooltipString', 'ck-tooltip_s' ),\n\t\t\t\t\tbind.to( 'isEnabled', value => value ? 'ck-enabled' : 'ck-disabled' ),\n\t\t\t\t\tbind.to( 'isOn', value => value ? 'ck-on' : 'ck-off' ),\n\t\t\t\t\tbind.if( 'withText', 'ck-button_with-text' )\n\t\t\t\t],\n\t\t\t\ttype: bind.to( 'type', value => value ? value : 'button' ),\n\t\t\t\t'data-ck-tooltip': [\n\t\t\t\t\tbind.to( '_tooltipString' )\n\t\t\t\t],\n\t\t\t\ttabindex: bind.to( 'tabindex' )\n\t\t\t},\n\n\t\t\tchildren: [\n\t\t\t\t{\n\t\t\t\t\ttag: 'span',\n\n\t\t\t\t\tattributes: {\n\t\t\t\t\t\tclass: [ 'ck-button__label' ]\n\t\t\t\t\t},\n\n\t\t\t\t\tchildren: [\n\t\t\t\t\t\t{\n\t\t\t\t\t\t\ttext: bind.to( 'label' )\n\t\t\t\t\t\t}\n\t\t\t\t\t]\n\t\t\t\t}\n\t\t\t],\n\n\t\t\ton: {\n\t\t\t\tmousedown: bind.to( evt => {\n\t\t\t\t\tevt.preventDefault();\n\t\t\t\t} ),\n\n\t\t\t\tclick: bind.to( evt => {\n\t\t\t\t\t// We can't make the button disabled using the disabled attribute, because it won't be focusable.\n\t\t\t\t\t// Though, shouldn't this condition be moved to the button controller?\n\t\t\t\t\tif ( this.isEnabled ) {\n\t\t\t\t\t\tthis.fire( 'execute' );\n\t\t\t\t\t} else {\n\t\t\t\t\t\t// Prevent the default when button is disabled, to block e.g.\n\t\t\t\t\t\t// automatic form submitting. See ckeditor/ckeditor5-link#74.\n\t\t\t\t\t\tevt.preventDefault();\n\t\t\t\t\t}\n\t\t\t\t} )\n\t\t\t}\n\t\t} );\n\n\t\t/**\n\t\t * Fired when the button view is clicked. It won't be fired when the button is disabled.\n\t\t *\n\t\t * @event #execute\n\t\t */\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tlet promise = Promise.resolve();\n\n\t\tif ( this.icon && !this.iconView ) {\n\t\t\tconst iconView = this.iconView = new IconView();\n\n\t\t\ticonView.bind( 'content' ).to( this, 'icon' );\n\n\t\t\tthis.element.insertBefore( iconView.element, this.element.firstChild );\n\n\t\t\t// Make sure the icon view will be destroyed along with button.\n\t\t\tpromise = promise.then( () => this.addChildren( iconView ) );\n\t\t}\n\n\t\treturn promise.then( () => super.init() );\n\t}\n\n\t/**\n\t * Focuses the button.\n\t */\n\tfocus() {\n\t\tthis.element.focus();\n\t}\n\n\t/**\n\t * Gets value for the `data-ck-tooltip` attribute from the combination of\n\t * {@link #tooltip}, {@link #label} and {@link #keystroke} attributes.\n\t *\n\t * @private\n\t * @see #tooltip\n\t * @see #_tooltipString\n\t * @param {Boolean|String|Function} tooltip Button tooltip.\n\t * @param {String} label Button label.\n\t * @param {String} keystroke Button keystroke.\n\t * @returns {String}\n\t */\n\t_getTooltipString( tooltip, label, keystroke ) {\n\t\tif ( tooltip ) {\n\t\t\tif ( typeof tooltip == 'string' ) {\n\t\t\t\treturn tooltip;\n\t\t\t} else {\n\t\t\t\tif ( keystroke ) {\n\t\t\t\t\tkeystroke = getEnvKeystrokeText( keystroke );\n\t\t\t\t}\n\n\t\t\t\tif ( tooltip instanceof Function ) {\n\t\t\t\t\treturn tooltip( label, keystroke );\n\t\t\t\t} else if ( tooltip === true ) {\n\t\t\t\t\treturn `${ label }${ keystroke ? ` (${ keystroke })` : '' }`;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn false;\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-ui/src/button/buttonview.js\n// module id = 22\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * Set of utils related to keyboard support.\n *\n * @module utils/keyboard\n */\n\nimport CKEditorError from './ckeditorerror';\nimport env from './env';\n\n/**\n * Object with `keyName => keyCode` pairs for a set of known keys.\n *\n * Contains:\n *\n * * `a-z`,\n * * `0-9`,\n * * `f1-f12`,\n * * `arrow(left|up|right|bottom)`,\n * * `backspace`, `delete`, `enter`, `esc`, `tab`,\n * * `ctrl`, `cmd`, `shift`, `alt`.\n */\nexport const keyCodes = generateKnownKeyCodes();\n\n/**\n * Converts a key name or a {@link module:utils/keyboard~KeystrokeInfo keystroke info} into a key code.\n *\n * Note: Key names are matched with {@link module:utils/keyboard~keyCodes} in a case-insensitive way.\n *\n * @param {String|module:utils/keyboard~KeystrokeInfo} Key name (see {@link module:utils/keyboard~keyCodes})\n * or a keystroke data object.\n * @returns {Number} Key or keystroke code.\n */\nexport function getCode( key ) {\n\tlet keyCode;\n\n\tif ( typeof key == 'string' ) {\n\t\tkeyCode = keyCodes[ key.toLowerCase() ];\n\n\t\tif ( !keyCode ) {\n\t\t\t/**\n\t\t\t * Unknown key name. Only key names contained by the {@link module:utils/keyboard~keyCodes} can be used.\n\t\t\t *\n\t\t\t * @errror keyboard-unknown-key\n\t\t\t * @param {String} key\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'keyboard-unknown-key: Unknown key name.', { key } );\n\t\t}\n\t} else {\n\t\tkeyCode = key.keyCode +\n\t\t\t( key.altKey ? keyCodes.alt : 0 ) +\n\t\t\t( key.ctrlKey ? keyCodes.ctrl : 0 ) +\n\t\t\t( key.shiftKey ? keyCodes.shift : 0 );\n\t}\n\n\treturn keyCode;\n}\n\n/**\n * Parses keystroke and returns a keystroke code that will match the code returned by\n * link {@link module:utils/keyboard.getCode} for a corresponding {@link module:utils/keyboard~KeystrokeInfo keystroke info}.\n *\n * The keystroke can be passed in two formats:\n *\n * * as a single string – e.g. `ctrl + A`,\n * * as an array of {@link module:utils/keyboard~keyCodes known key names} and key codes – e.g.:\n *   * `[ 'ctrl', 32 ]` (ctrl + space),\n *   * `[ 'ctrl', 'a' ]` (ctrl + A).\n *\n * Note: Key names are matched with {@link module:utils/keyboard~keyCodes} in a case-insensitive way.\n *\n * Note: Only keystrokes with a single non-modifier key are supported (e.g. `ctrl+A` is OK, but `ctrl+A+B` is not).\n *\n * @param {String|Array.<Number|String>} keystroke Keystroke definition.\n * @returns {Number} Keystroke code.\n */\nexport function parseKeystroke( keystroke ) {\n\tif ( typeof keystroke == 'string' ) {\n\t\tkeystroke = splitKeystrokeText( keystroke );\n\t}\n\n\treturn keystroke\n\t\t.map( key => ( typeof key == 'string' ) ? getCode( key ) : key )\n\t\t.reduce( ( key, sum ) => sum + key, 0 );\n}\n\n/**\n * It translates any keystroke string text like `\"CTRL+A\"` to an\n * environment–specific keystroke, i.e. `\"⌘A\"` on Mac OSX.\n *\n * @param {String} keystroke Keystroke text.\n * @returns {String} Keystroke text specific for the environment.\n */\nexport function getEnvKeystrokeText( keystroke ) {\n\tconst split = splitKeystrokeText( keystroke );\n\n\tif ( env.mac ) {\n\t\tif ( split[ 0 ].toLowerCase() == 'ctrl' ) {\n\t\t\treturn '⌘' + ( split[ 1 ] || '' );\n\t\t}\n\t}\n\n\treturn keystroke;\n}\n\nfunction generateKnownKeyCodes() {\n\tconst keyCodes = {\n\t\tarrowleft: 37,\n\t\tarrowup: 38,\n\t\tarrowright: 39,\n\t\tarrowdown: 40,\n\t\tbackspace: 8,\n\t\tdelete: 46,\n\t\tenter: 13,\n\t\tesc: 27,\n\t\ttab: 9,\n\n\t\t// The idea about these numbers is that they do not collide with any real key codes, so we can use them\n\t\t// like bit masks.\n\t\tctrl: 0x110000,\n\t\t// Has the same code as ctrl, because their behaviour should be unified across the editor.\n\t\t// See http://ckeditor.github.io/editor-recommendations/general-policies#ctrl-vs-cmd\n\t\tcmd: 0x110000,\n\t\tshift: 0x220000,\n\t\talt: 0x440000\n\t};\n\n\t// a-z\n\tfor ( let code = 65; code <= 90; code++ ) {\n\t\tconst letter = String.fromCharCode( code );\n\n\t\tkeyCodes[ letter.toLowerCase() ] = code;\n\t}\n\n\t// 0-9\n\tfor ( let code = 48; code <= 57; code++ ) {\n\t\tkeyCodes[ code - 48 ] = code;\n\t}\n\n\t// F1-F12\n\tfor ( let code = 112; code <= 123; code++ ) {\n\t\tkeyCodes[ 'f' + ( code - 111 ) ] = code;\n\t}\n\n\treturn keyCodes;\n}\n\nfunction splitKeystrokeText( keystroke ) {\n\treturn keystroke.split( /\\s*\\+\\s*/ );\n}\n\n/**\n * Information about a keystroke.\n *\n * @interface module:utils/keyboard~KeystrokeInfo\n */\n\n/**\n * The [key code](https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/keyCode).\n *\n * @member {Number} module:utils/keyboard~KeystrokeInfo#keyCode\n */\n\n/**\n * Whether the <kbd>Alt</kbd> modifier was pressed.\n *\n * @member {Bolean} module:utils/keyboard~KeystrokeInfo#altKey\n */\n\n/**\n * Whether the <kbd>Ctrl</kbd> or <kbd>Cmd</kbd> modifier was pressed.\n *\n * @member {Bolean} module:utils/keyboard~KeystrokeInfo#ctrlKey\n */\n\n/**\n * Whether the <kbd>Shift</kbd> modifier was pressed.\n *\n * @member {Bolean} module:utils/keyboard~KeystrokeInfo#shiftKey\n */\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/keyboard.js\n// module id = 23\n// module chunks = 0","import arrayPush from './_arrayPush';\nimport isFlattenable from './_isFlattenable';\n\n/**\n * The base implementation of `_.flatten` with support for restricting flattening.\n *\n * @private\n * @param {Array} array The array to flatten.\n * @param {number} depth The maximum recursion depth.\n * @param {boolean} [predicate=isFlattenable] The function invoked per iteration.\n * @param {boolean} [isStrict] Restrict to values that pass `predicate` checks.\n * @param {Array} [result=[]] The initial result value.\n * @returns {Array} Returns the new flattened array.\n */\nfunction baseFlatten(array, depth, predicate, isStrict, result) {\n  var index = -1,\n      length = array.length;\n\n  predicate || (predicate = isFlattenable);\n  result || (result = []);\n\n  while (++index < length) {\n    var value = array[index];\n    if (depth > 0 && predicate(value)) {\n      if (depth > 1) {\n        // Recursively flatten arrays (susceptible to call stack limits).\n        baseFlatten(value, depth - 1, predicate, isStrict, result);\n      } else {\n        arrayPush(result, value);\n      }\n    } else if (!isStrict) {\n      result[result.length] = value;\n    }\n  }\n  return result;\n}\n\nexport default baseFlatten;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_baseFlatten.js\n// module id = 24\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/text\n */\n\nimport Node from './node';\n\n/**\n * Model text node. Type of {@link module:engine/model/node~Node node} that contains {@link module:engine/model/text~Text#data text data}.\n *\n * **Important:** see {@link module:engine/model/node~Node} to read about restrictions using `Text` and `Node` API.\n *\n * **Note:** keep in mind that `Text` instances might indirectly got removed from model tree when model is changed.\n * This happens when {@link module:engine/model/writer~writer model writer} is used to change model and the text node is merged with\n * another text node. Then, both text nodes are removed and a new text node is inserted into the model. Because of\n * this behavior, keeping references to `Text` is not recommended. Instead, consider creating\n * {@link module:engine/model/liveposition~LivePosition live position} placed before the text node.\n */\nexport default class Text extends Node {\n\t/**\n\t * Creates a text node.\n\t *\n\t * @param {String} data Node's text.\n\t * @param {Object} [attrs] Node's attributes. See {@link module:utils/tomap~toMap} for a list of accepted values.\n\t */\n\tconstructor( data, attrs ) {\n\t\tsuper( attrs );\n\n\t\t/**\n\t\t * Text data contained in this text node.\n\t\t *\n\t\t * @type {String}\n\t\t */\n\t\tthis.data = data || '';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tget offsetSize() {\n\t\treturn this.data.length;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tis( type ) {\n\t\treturn type == 'text';\n\t}\n\n\t/**\n\t * Creates a copy of this text node and returns it. Created text node has same text data and attributes as original text node.\n\t */\n\tclone() {\n\t\treturn new Text( this.data, this.getAttributes() );\n\t}\n\n\t/**\n\t * Converts `Text` instance to plain object and returns it.\n\t *\n\t * @returns {Object} `Text` instance converted to plain object.\n\t */\n\ttoJSON() {\n\t\tlet json = super.toJSON();\n\n\t\tjson.data = this.data;\n\n\t\treturn json;\n\t}\n\n\t/**\n\t * Creates a `Text` instance from given plain object (i.e. parsed JSON string).\n\t *\n\t * @param {Object} json Plain object to be converted to `Text`.\n\t * @returns {module:engine/model/text~Text} `Text` instance created using given plain object.\n\t */\n\tstatic fromJSON( json ) {\n\t\treturn new Text( json.data, json.attributes );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/text.js\n// module id = 25\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/position\n */\n\nimport TreeWalker from './treewalker';\n\nimport compareArrays from '@ckeditor/ckeditor5-utils/src/comparearrays';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\nimport EditableElement from './editableelement';\n\n/**\n * Position in the tree. Position is always located before or after a node.\n */\nexport default class Position {\n\t/**\n\t * Creates a position.\n\t *\n\t * @param {module:engine/view/node~Node|module:engine/view/documentfragment~DocumentFragment} parent Position parent.\n\t * @param {Number} offset Position offset.\n\t */\n\tconstructor( parent, offset ) {\n\t\t/**\n\t\t * Position parent.\n\t\t *\n\t\t * @member {module:engine/view/node~Node|module:engine/view/documentfragment~DocumentFragment}\n\t\t * module:engine/view/position~Position#parent\n\t\t */\n\t\tthis.parent = parent;\n\n\t\t/**\n\t\t * Position offset.\n\t\t *\n\t\t * @member {Number} module:engine/view/position~Position#offset\n\t\t */\n\t\tthis.offset = offset;\n\t}\n\n\t/**\n\t * Node directly after the position. Equals `null` when there is no node after position or position is located\n\t * inside text node.\n\t *\n\t * @readonly\n\t * @type {module:engine/view/node~Node|null}\n\t */\n\tget nodeAfter() {\n\t\tif ( this.parent.is( 'text' ) ) {\n\t\t\treturn null;\n\t\t}\n\n\t\treturn this.parent.getChild( this.offset ) || null;\n\t}\n\n\t/**\n\t * Node directly before the position. Equals `null` when there is no node before position or position is located\n\t * inside text node.\n\t *\n\t * @readonly\n\t * @type {module:engine/view/node~Node|null}\n\t */\n\tget nodeBefore() {\n\t\tif ( this.parent.is( 'text' ) ) {\n\t\t\treturn null;\n\t\t}\n\n\t\treturn this.parent.getChild( this.offset - 1 ) || null;\n\t}\n\n\t/**\n\t * Is `true` if position is at the beginning of its {@link module:engine/view/position~Position#parent parent}, `false` otherwise.\n\t *\n\t * @readonly\n\t * @type {Boolean}\n\t */\n\tget isAtStart() {\n\t\treturn this.offset === 0;\n\t}\n\n\t/**\n\t * Is `true` if position is at the end of its {@link module:engine/view/position~Position#parent parent}, `false` otherwise.\n\t *\n\t * @readonly\n\t * @type {Boolean}\n\t */\n\tget isAtEnd() {\n\t\tconst endOffset = this.parent.is( 'text' ) ? this.parent.data.length : this.parent.childCount;\n\n\t\treturn this.offset === endOffset;\n\t}\n\n\t/**\n\t * Position's root, that is the root of the position's parent element.\n\t *\n\t * @readonly\n\t * @type {module:engine/view/node~Node|module:engine/view/documentfragment~DocumentFragment}\n\t */\n\tget root() {\n\t\treturn this.parent.root;\n\t}\n\n\t/**\n\t * {@link module:engine/view/editableelement~EditableElement EditableElement} instance that contains this position, or `null` if\n\t * position is not inside an editable element.\n\t *\n\t * @type {module:engine/view/editableelement~EditableElement|null}\n\t */\n\tget editableElement() {\n\t\tlet editable = this.parent;\n\n\t\twhile ( !( editable instanceof EditableElement ) ) {\n\t\t\tif ( editable.parent ) {\n\t\t\t\teditable = editable.parent;\n\t\t\t} else {\n\t\t\t\treturn null;\n\t\t\t}\n\t\t}\n\n\t\treturn editable;\n\t}\n\n\t/**\n\t * Returns a new instance of Position with offset incremented by `shift` value.\n\t *\n\t * @param {Number} shift How position offset should get changed. Accepts negative values.\n\t * @returns {module:engine/view/position~Position} Shifted position.\n\t */\n\tgetShiftedBy( shift ) {\n\t\tlet shifted = Position.createFromPosition( this );\n\n\t\tlet offset = shifted.offset + shift;\n\t\tshifted.offset = offset < 0 ? 0 : offset;\n\n\t\treturn shifted;\n\t}\n\n\t/**\n\t * Gets the farthest position which matches the callback using\n\t * {@link module:engine/view/treewalker~TreeWalker TreeWalker}.\n\t *\n\t * For example:\n\t *\n\t * \t\tgetLastMatchingPosition( value => value.type == 'text' ); // <p>{}foo</p> -> <p>foo[]</p>\n\t * \t\tgetLastMatchingPosition( value => value.type == 'text', { direction: 'backward' } ); // <p>foo[]</p> -> <p>{}foo</p>\n\t * \t\tgetLastMatchingPosition( value => false ); // Do not move the position.\n\t *\n\t * @param {Function} skip Callback function. Gets {@link module:engine/view/treewalker~TreeWalkerValue} and should\n\t * return `true` if the value should be skipped or `false` if not.\n\t * @param {Object} options Object with configuration options. See {@link module:engine/view/treewalker~TreeWalker}.\n\t *\n\t * @returns {module:engine/view/position~Position} The position after the last item which matches the `skip` callback test.\n\t */\n\tgetLastMatchingPosition( skip, options = {} ) {\n\t\toptions.startPosition = this;\n\n\t\tconst treeWalker = new TreeWalker( options );\n\t\ttreeWalker.skip( skip );\n\n\t\treturn treeWalker.position;\n\t}\n\n\t/**\n\t * Returns ancestors array of this position, that is this position's parent and it's ancestors.\n\t *\n\t * @returns {Array} Array with ancestors.\n\t */\n\tgetAncestors() {\n\t\tif ( this.parent.is( 'documentFragment' ) ) {\n\t\t\treturn [ this.parent ];\n\t\t} else {\n\t\t\treturn this.parent.getAncestors( { includeNode: true } );\n\t\t}\n\t}\n\n\t/**\n\t * Checks whether this position equals given position.\n\t *\n\t * @param {module:engine/view/position~Position} otherPosition Position to compare with.\n\t * @returns {Boolean} True if positions are same.\n\t */\n\tisEqual( otherPosition ) {\n\t\treturn ( this.parent == otherPosition.parent && this.offset == otherPosition.offset );\n\t}\n\n\t/**\n\t * Checks whether this position is located before given position. When method returns `false` it does not mean that\n\t * this position is after give one. Two positions may be located inside separate roots and in that situation this\n\t * method will still return `false`.\n\t *\n\t * @see module:engine/view/position~Position#isAfter\n\t * @see module:engine/view/position~Position#compareWith\n\t * @param {module:engine/view/position~Position} otherPosition Position to compare with.\n\t * @returns {Boolean} Returns `true` if this position is before given position.\n\t */\n\tisBefore( otherPosition ) {\n\t\treturn this.compareWith( otherPosition ) == 'before';\n\t}\n\n\t/**\n\t * Checks whether this position is located after given position. When method returns `false` it does not mean that\n\t * this position is before give one. Two positions may be located inside separate roots and in that situation this\n\t * method will still return `false`.\n\t *\n\t * @see module:engine/view/position~Position#isBefore\n\t * @see module:engine/view/position~Position#compareWith\n\t * @param {module:engine/view/position~Position} otherPosition Position to compare with.\n\t * @returns {Boolean} Returns `true` if this position is after given position.\n\t */\n\tisAfter( otherPosition ) {\n\t\treturn this.compareWith( otherPosition ) == 'after';\n\t}\n\n\t/**\n\t * Checks whether this position is before, after or in same position that other position. Two positions may be also\n\t * different when they are located in separate roots.\n\t *\n\t * @param {module:engine/view/position~Position} otherPosition Position to compare with.\n\t * @returns {module:engine/view/position~PositionRelation}\n\t */\n\tcompareWith( otherPosition ) {\n\t\tif ( this.isEqual( otherPosition ) ) {\n\t\t\treturn 'same';\n\t\t}\n\n\t\t// If positions have same parent.\n\t\tif ( this.parent === otherPosition.parent ) {\n\t\t\treturn this.offset - otherPosition.offset < 0 ? 'before' : 'after';\n\t\t}\n\n\t\t// Get path from root to position's parent element.\n\t\tconst path = this.getAncestors();\n\t\tconst otherPath = otherPosition.getAncestors();\n\n\t\t// Compare both path arrays to find common ancestor.\n\t\tconst result = compareArrays( path, otherPath );\n\n\t\tlet commonAncestorIndex;\n\n\t\tswitch ( result ) {\n\t\t\tcase 0:\n\t\t\t\t// No common ancestors found.\n\t\t\t\treturn 'different';\n\n\t\t\tcase 'prefix':\n\t\t\t\tcommonAncestorIndex = path.length - 1;\n\t\t\t\tbreak;\n\n\t\t\tcase 'extension':\n\t\t\t\tcommonAncestorIndex = otherPath.length - 1;\n\t\t\t\tbreak;\n\n\t\t\tdefault:\n\t\t\t\tcommonAncestorIndex = result - 1;\n\t\t}\n\n\t\t// Common ancestor of two positions.\n\t\tconst commonAncestor = path[ commonAncestorIndex ];\n\t\tconst nextAncestor1 = path[ commonAncestorIndex + 1 ];\n\t\tconst nextAncestor2 = otherPath[ commonAncestorIndex + 1 ];\n\n\t\t// Check if common ancestor is not one of the parents.\n\t\tif ( commonAncestor === this.parent ) {\n\t\t\tconst index = this.offset - nextAncestor2.index;\n\n\t\t\treturn index <= 0 ? 'before' : 'after';\n\t\t} else if ( commonAncestor === otherPosition.parent ) {\n\t\t\tconst index = nextAncestor1.index - otherPosition.offset;\n\n\t\t\treturn index < 0 ? 'before' : 'after';\n\t\t}\n\n\t\tconst index = nextAncestor1.index - nextAncestor2.index;\n\n\t\t// Compare indexes of next ancestors inside common one.\n\t\treturn index < 0 ? 'before' : 'after';\n\t}\n\n\t/**\n\t * Creates position at the given location. The location can be specified as:\n\t *\n\t * * a {@link module:engine/view/position~Position position},\n\t * * parent element and offset (offset defaults to `0`),\n\t * * parent element and `'end'` (sets position at the end of that element),\n\t * * {@link module:engine/view/item~Item view item} and `'before'` or `'after'` (sets position before or after given view item).\n\t *\n\t * This method is a shortcut to other constructors such as:\n\t *\n\t * * {@link module:engine/view/position~Position.createBefore},\n\t * * {@link module:engine/view/position~Position.createAfter},\n\t * * {@link module:engine/view/position~Position.createFromPosition}.\n\t *\n\t * @param {module:engine/view/item~Item|module:engine/model/position~Position} itemOrPosition\n\t * @param {Number|'end'|'before'|'after'} [offset=0] Offset or one of the flags. Used only when\n\t * first parameter is a {@link module:engine/view/item~Item view item}.\n\t */\n\tstatic createAt( itemOrPosition, offset ) {\n\t\tif ( itemOrPosition instanceof Position ) {\n\t\t\treturn this.createFromPosition( itemOrPosition );\n\t\t} else {\n\t\t\tlet node = itemOrPosition;\n\n\t\t\tif ( offset == 'end' ) {\n\t\t\t\toffset = node.is( 'text' ) ? node.data.length : node.childCount;\n\t\t\t} else if ( offset == 'before' ) {\n\t\t\t\treturn this.createBefore( node );\n\t\t\t} else if ( offset == 'after' ) {\n\t\t\t\treturn this.createAfter( node );\n\t\t\t} else if ( !offset ) {\n\t\t\t\toffset = 0;\n\t\t\t}\n\n\t\t\treturn new Position( node, offset );\n\t\t}\n\t}\n\n\t/**\n\t * Creates a new position after given view item.\n\t *\n\t * @param {module:engine/view/item~Item} item View item after which the position should be located.\n\t * @returns {module:engine/view/position~Position}\n\t */\n\tstatic createAfter( item ) {\n\t\t// TextProxy is not a instance of Node so we need do handle it in specific way.\n\t\tif ( item.is( 'textProxy' ) ) {\n\t\t\treturn new Position( item.textNode, item.offsetInText + item.data.length );\n\t\t}\n\n\t\tif ( !item.parent ) {\n\t\t\t/**\n\t\t\t * You can not make a position after a root.\n\t\t\t *\n\t\t\t * @error position-after-root\n\t\t\t * @param {module:engine/view/node~Node} root\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'view-position-after-root: You can not make position after root.', { root: item } );\n\t\t}\n\n\t\treturn new Position( item.parent, item.index + 1 );\n\t}\n\n\t/**\n\t * Creates a new position before given view item.\n\t *\n\t * @param {module:engine/view/item~Item} item View item before which the position should be located.\n\t * @returns {module:engine/view/position~Position}\n\t */\n\tstatic createBefore( item ) {\n\t\t// TextProxy is not a instance of Node so we need do handle it in specific way.\n\t\tif ( item.is( 'textProxy' ) ) {\n\t\t\treturn new Position( item.textNode, item.offsetInText );\n\t\t}\n\n\t\tif ( !item.parent ) {\n\t\t\t/**\n\t\t\t * You cannot make a position before a root.\n\t\t\t *\n\t\t\t * @error position-before-root\n\t\t\t * @param {module:engine/view/node~Node} root\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'view-position-before-root: You can not make position before root.', { root: item } );\n\t\t}\n\n\t\treturn new Position( item.parent, item.index );\n\t}\n\n\t/**\n\t * Creates and returns a new instance of `Position`, which is equal to the passed position.\n\t *\n\t * @param {module:engine/view/position~Position} position Position to be cloned.\n\t * @returns {module:engine/view/position~Position}\n\t */\n\tstatic createFromPosition( position ) {\n\t\treturn new this( position.parent, position.offset );\n\t}\n}\n\n/**\n * A flag indicating whether this position is `'before'` or `'after'` or `'same'` as given position.\n * If positions are in different roots `'different'` flag is returned.\n *\n * @typedef {String} module:engine/view/position~PositionRelation\n */\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/view/position.js\n// module id = 26\n// module chunks = 0","/**\n * A specialized version of `_.map` for arrays without support for iteratee\n * shorthands.\n *\n * @private\n * @param {Array} array The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array} Returns the new mapped array.\n */\nfunction arrayMap(array, iteratee) {\n  var index = -1,\n      length = array.length,\n      result = Array(length);\n\n  while (++index < length) {\n    result[index] = iteratee(array[index], index, array);\n  }\n  return result;\n}\n\nexport default arrayMap;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_arrayMap.js\n// module id = 27\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/operation/moveoperation\n */\n\nimport Operation from './operation';\nimport Position from '../position';\nimport Range from '../range';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\nimport compareArrays from '@ckeditor/ckeditor5-utils/src/comparearrays';\nimport writer from './../writer';\n\n/**\n * Operation to move a range of {@link module:engine/model/item~Item model items}\n * to given {@link module:engine/model/position~Position target position}.\n */\nexport default class MoveOperation extends Operation {\n\t/**\n\t * Creates a move operation.\n\t *\n\t * @param {module:engine/model/position~Position} sourcePosition\n\t * Position before the first {@link module:engine/model/item~Item model item} to move.\n\t * @param {Number} howMany Offset size of moved range. Moved range will start from `sourcePosition` and end at\n\t * `sourcePosition` with offset shifted by `howMany`.\n\t * @param {module:engine/model/position~Position} targetPosition Position at which moved nodes will be inserted.\n\t * @param {Number} baseVersion {@link module:engine/model/document~Document#version} on which operation can be applied.\n\t */\n\tconstructor( sourcePosition, howMany, targetPosition, baseVersion ) {\n\t\tsuper( baseVersion );\n\n\t\t/**\n\t\t * Position before the first {@link module:engine/model/item~Item model item} to move.\n\t\t *\n\t\t * @member {module:engine/model/position~Position} module:engine/model/operation/moveoperation~MoveOperation#sourcePosition\n\t\t */\n\t\tthis.sourcePosition = Position.createFromPosition( sourcePosition );\n\n\t\t/**\n\t\t * Offset size of moved range.\n\t\t *\n\t\t * @member {Number} module:engine/model/operation/moveoperation~MoveOperation#howMany\n\t\t */\n\t\tthis.howMany = howMany;\n\n\t\t/**\n\t\t * Position at which moved nodes will be inserted.\n\t\t *\n\t\t * @member {module:engine/model/position~Position} module:engine/model/operation/moveoperation~MoveOperation#targetPosition\n\t\t */\n\t\tthis.targetPosition = Position.createFromPosition( targetPosition );\n\n\t\t/**\n\t\t * Defines whether `MoveOperation` is sticky. If `MoveOperation` is sticky, during\n\t\t * {@link module:engine/model/operation/transform~transform operational transformation} if there will be an operation that\n\t\t * inserts some nodes at the position equal to the boundary of this `MoveOperation`, that operation will\n\t\t * get their insertion path updated to the position where this `MoveOperation` moves the range.\n\t\t *\n\t\t * @member {Boolean} module:engine/model/operation/moveoperation~MoveOperation#isSticky\n\t\t */\n\t\tthis.isSticky = false;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tget type() {\n\t\treturn 'move';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t * @returns {module:engine/model/operation/moveoperation~MoveOperation}\n\t */\n\tclone() {\n\t\tconst op = new this.constructor( this.sourcePosition, this.howMany, this.targetPosition, this.baseVersion );\n\t\top.isSticky = this.isSticky;\n\n\t\treturn op;\n\t}\n\n\t/**\n\t * Returns the start position of the moved range after it got moved. This may be different than\n\t * {@link module:engine/model/operation/moveoperation~MoveOperation#targetPosition} in some cases, i.e. when a range is moved\n\t * inside the same parent but {@link module:engine/model/operation/moveoperation~MoveOperation#targetPosition targetPosition}\n\t * is after {@link module:engine/model/operation/moveoperation~MoveOperation#sourcePosition sourcePosition}.\n\t *\n\t *\t\t vv              vv\n\t *\t\tabcdefg ===> adefbcg\n\t *\t\t     ^          ^\n\t *\t\t     targetPos\tmovedRangeStart\n\t *\t\t     offset 6\toffset 4\n\t *\n\t * @returns {module:engine/model/position~Position}\n\t */\n\tgetMovedRangeStart() {\n\t\treturn this.targetPosition._getTransformedByDeletion( this.sourcePosition, this.howMany );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t * @returns {module:engine/model/operation/moveoperation~MoveOperation}\n\t */\n\tgetReversed() {\n\t\tlet newTargetPosition = this.sourcePosition._getTransformedByInsertion( this.targetPosition, this.howMany );\n\n\t\tconst op = new this.constructor( this.getMovedRangeStart(), this.howMany, newTargetPosition, this.baseVersion + 1 );\n\t\top.isSticky = this.isSticky;\n\n\t\treturn op;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\t_execute() {\n\t\tlet sourceElement = this.sourcePosition.parent;\n\t\tlet targetElement = this.targetPosition.parent;\n\t\tlet sourceOffset = this.sourcePosition.offset;\n\t\tlet targetOffset = this.targetPosition.offset;\n\n\t\t// Validate whether move operation has correct parameters.\n\t\t// Validation is pretty complex but move operation is one of the core ways to manipulate the document state.\n\t\t// We expect that many errors might be connected with one of scenarios described below.\n\t\tif ( !sourceElement || !targetElement ) {\n\t\t\t/**\n\t\t\t * Source position or target position is invalid.\n\t\t\t *\n\t\t\t * @error move-operation-position-invalid\n\t\t\t */\n\t\t\tthrow new CKEditorError(\n\t\t\t\t'move-operation-position-invalid: Source position or target position is invalid.'\n\t\t\t);\n\t\t} else if ( sourceOffset + this.howMany > sourceElement.maxOffset ) {\n\t\t\t/**\n\t\t\t * The nodes which should be moved do not exist.\n\t\t\t *\n\t\t\t * @error move-operation-nodes-do-not-exist\n\t\t\t */\n\t\t\tthrow new CKEditorError(\n\t\t\t\t'move-operation-nodes-do-not-exist: The nodes which should be moved do not exist.'\n\t\t\t);\n\t\t} else if ( sourceElement === targetElement && sourceOffset < targetOffset && targetOffset < sourceOffset + this.howMany ) {\n\t\t\t/**\n\t\t\t * Trying to move a range of nodes into the middle of that range.\n\t\t\t *\n\t\t\t * @error move-operation-range-into-itself\n\t\t\t */\n\t\t\tthrow new CKEditorError(\n\t\t\t\t'move-operation-range-into-itself: Trying to move a range of nodes to the inside of that range.'\n\t\t\t);\n\t\t} else if ( this.sourcePosition.root == this.targetPosition.root ) {\n\t\t\tif ( compareArrays( this.sourcePosition.getParentPath(), this.targetPosition.getParentPath() ) == 'prefix' ) {\n\t\t\t\tlet i = this.sourcePosition.path.length - 1;\n\n\t\t\t\tif ( this.targetPosition.path[ i ] >= sourceOffset && this.targetPosition.path[ i ] < sourceOffset + this.howMany ) {\n\t\t\t\t\t/**\n\t\t\t\t\t * Trying to move a range of nodes into one of nodes from that range.\n\t\t\t\t\t *\n\t\t\t\t\t * @error move-operation-node-into-itself\n\t\t\t\t\t */\n\t\t\t\t\tthrow new CKEditorError(\n\t\t\t\t\t\t'move-operation-node-into-itself: Trying to move a range of nodes into one of nodes from that range.'\n\t\t\t\t\t);\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\tconst range = writer.move( Range.createFromPositionAndShift( this.sourcePosition, this.howMany ), this.targetPosition );\n\n\t\treturn {\n\t\t\tsourcePosition: this.sourcePosition,\n\t\t\trange: range\n\t\t};\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.operation.MoveOperation';\n\t}\n\n\t/**\n\t * Creates `MoveOperation` object from deserilized object, i.e. from parsed JSON string.\n\t *\n\t * @param {Object} json Deserialized JSON object.\n\t * @param {module:engine/model/document~Document} document Document on which this operation will be applied.\n\t * @returns {module:engine/model/operation/moveoperation~MoveOperation}\n\t */\n\tstatic fromJSON( json, document ) {\n\t\tlet sourcePosition = Position.fromJSON( json.sourcePosition, document );\n\t\tlet targetPosition = Position.fromJSON( json.targetPosition, document );\n\n\t\tconst move = new this( sourcePosition, json.howMany, targetPosition, json.baseVersion );\n\n\t\tif ( json.isSticky ) {\n\t\t\tmove.isSticky = true;\n\t\t}\n\n\t\treturn move;\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/operation/moveoperation.js\n// module id = 28\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/text\n */\n\nimport Node from './node';\n\n/**\n * Tree view text node.\n *\n * @extends module:engine/view/node~Node\n */\nexport default class Text extends Node {\n\t/**\n\t * Creates a tree view text node.\n\t *\n\t * @param {String} data Text.\n\t */\n\tconstructor( data ) {\n\t\tsuper();\n\n\t\t/**\n\t\t * The text content.\n\t\t *\n\t\t * Setting the data fires the {@link module:engine/view/node~Node#event:change:text change event}.\n\t\t *\n\t\t * @private\n\t\t * @member {String} module:engine/view/text~Text#_data\n\t\t */\n\t\tthis._data = data;\n\t}\n\n\t/**\n\t * Clones this node.\n\t *\n\t * @returns {module:engine/view/text~Text} Text node that is a clone of this node.\n\t */\n\tclone() {\n\t\treturn new Text( this.data );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tis( type ) {\n\t\treturn type == 'text';\n\t}\n\n\t/**\n\t * The text content.\n\t *\n\t * Setting the data fires the {@link module:engine/view/node~Node#event:change:text change event}.\n\t */\n\tget data() {\n\t\treturn this._data;\n\t}\n\n\tset data( data ) {\n\t\tthis._fireChange( 'text', this );\n\n\t\tthis._data = data;\n\t}\n\n\t/**\n\t * Checks if this text node is similar to other text node.\n\t * Both nodes should have the same data to be considered as similar.\n\t *\n\t * @param {module:engine/view/text~Text} otherNode Node to check if it is same as this node.\n\t * @returns {Boolean}\n\t */\n\tisSimilar( otherNode ) {\n\t\tif ( !( otherNode instanceof Text ) ) {\n\t\t\treturn false;\n\t\t}\n\n\t\treturn this === otherNode || this.data === otherNode.data;\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/view/text.js\n// module id = 29\n// module chunks = 0","import checkGlobal from './_checkGlobal';\n\n/** Used to determine if values are of the language type `Object`. */\nvar objectTypes = {\n  'function': true,\n  'object': true\n};\n\n/** Detect free variable `exports`. */\nvar freeExports = (objectTypes[typeof exports] && exports && !exports.nodeType)\n  ? exports\n  : undefined;\n\n/** Detect free variable `module`. */\nvar freeModule = (objectTypes[typeof module] && module && !module.nodeType)\n  ? module\n  : undefined;\n\n/** Detect free variable `global` from Node.js. */\nvar freeGlobal = checkGlobal(freeExports && freeModule && typeof global == 'object' && global);\n\n/** Detect free variable `self`. */\nvar freeSelf = checkGlobal(objectTypes[typeof self] && self);\n\n/** Detect free variable `window`. */\nvar freeWindow = checkGlobal(objectTypes[typeof window] && window);\n\n/** Detect `this` as the global object. */\nvar thisGlobal = checkGlobal(objectTypes[typeof this] && this);\n\n/**\n * Used as a reference to the global object.\n *\n * The `this` value is used if it's the global object to avoid Greasemonkey's\n * restricted `window` object, otherwise the `window` object is used.\n */\nvar root = freeGlobal ||\n  ((freeWindow !== (thisGlobal && thisGlobal.window)) && freeWindow) ||\n    freeSelf || thisGlobal || Function('return this')();\n\nexport default root;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_root.js\n// module id = 30\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/observablemixin\n */\n\nimport EmitterMixin from './emittermixin';\nimport CKEditorError from './ckeditorerror';\nimport extend from './lib/lodash/extend';\nimport isObject from './lib/lodash/isObject';\n\nconst attributesSymbol = Symbol( 'attributes' );\nconst boundObservablesSymbol = Symbol( 'boundObservables' );\nconst boundAttributesSymbol = Symbol( 'boundAttributes' );\n\n/**\n * Mixin that injects the \"observable attributes\" and data binding functionality.\n * Used mainly in the {@link module:ui/model~Model} class.\n *\n * @mixin ObservableMixin\n * @mixes module:utils/emittermixin~EmitterMixin\n * @implements module:utils/observablemixin~Observable\n */\nconst ObservableMixin = {\n\t/**\n\t * Creates and sets the value of an observable attribute of this object. Such an attribute becomes a part\n\t * of the state and is be observable.\n\t *\n\t * It accepts also a single object literal containing key/value pairs with attributes to be set.\n\t *\n\t * This method throws the observable-set-cannot-override error if the observable instance already\n\t * have a property with a given attribute name. This prevents from mistakenly overriding existing\n\t * properties and methods, but means that `foo.set( 'bar', 1 )` may be slightly slower than `foo.bar = 1`.\n\t *\n\t * @method #set\n\t * @param {String} name The attributes name.\n\t * @param {*} value The attributes value.\n\t */\n\tset( name, value ) {\n\t\t// If the first parameter is an Object, iterate over its properties.\n\t\tif ( isObject( name ) ) {\n\t\t\tObject.keys( name ).forEach( ( attr ) => {\n\t\t\t\tthis.set( attr, name[ attr ] );\n\t\t\t}, this );\n\n\t\t\treturn;\n\t\t}\n\n\t\tinitObservable( this );\n\n\t\tconst attributes = this[ attributesSymbol ];\n\n\t\tif ( ( name in this ) && !attributes.has( name ) ) {\n\t\t\t/**\n\t\t\t * Cannot override an existing property.\n\t\t\t *\n\t\t\t * This error is thrown when trying to {@link ~Observable#set set} an attribute with\n\t\t\t * a name of an already existing property. For example:\n\t\t\t *\n\t\t\t *\t\tlet observable = new Model();\n\t\t\t *\t\tobservable.property = 1;\n\t\t\t *\t\tobservable.set( 'property', 2 );\t\t// throws\n\t\t\t *\n\t\t\t *\t\tobservable.set( 'attr', 1 );\n\t\t\t *\t\tobservable.set( 'attr', 2 );\t\t\t// ok, because this is an existing attribute.\n\t\t\t *\n\t\t\t * @error observable-set-cannot-override\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'observable-set-cannot-override: Cannot override an existing property.' );\n\t\t}\n\n\t\tObject.defineProperty( this, name, {\n\t\t\tenumerable: true,\n\t\t\tconfigurable: true,\n\n\t\t\tget() {\n\t\t\t\treturn attributes.get( name );\n\t\t\t},\n\n\t\t\tset( value ) {\n\t\t\t\tconst oldValue = attributes.get( name );\n\n\t\t\t\t// Allow undefined as an initial value like A.define( 'x', undefined ) (#132).\n\t\t\t\t// Note: When attributes map has no such own property, then its value is undefined.\n\t\t\t\tif ( oldValue !== value || !attributes.has( name ) ) {\n\t\t\t\t\tattributes.set( name, value );\n\t\t\t\t\tthis.fire( 'change:' + name, name, value, oldValue );\n\t\t\t\t}\n\t\t\t}\n\t\t} );\n\n\t\tthis[ name ] = value;\n\t},\n\n\t/**\n\t * Binds observable attributes to another objects implementing {@link ~ObservableMixin}\n\t * interface (like {@link module:ui/model~Model}).\n\t *\n\t * Once bound, the observable will immediately share the current state of attributes\n\t * of the observable it is bound to and react to the changes to these attributes\n\t * in the future.\n\t *\n\t * **Note**: To release the binding use {@link module:utils/observablemixin~ObservableMixin#unbind}.\n\t *\n\t *\t\tA.bind( 'a' ).to( B );\n\t *\t\tA.bind( 'a' ).to( B, 'b' );\n\t *\t\tA.bind( 'a', 'b' ).to( B, 'c', 'd' );\n\t *\t\tA.bind( 'a' ).to( B, 'b', C, 'd', ( b, d ) => b + d );\n\t *\n\t * @method #bind\n\t * @param {...String} bindAttrs Observable attributes that will be bound to another observable(s).\n\t * @returns {module:utils/observablemixin~BindChain}\n\t */\n\tbind( ...bindAttrs ) {\n\t\tif ( !bindAttrs.length || !isStringArray( bindAttrs ) ) {\n\t\t\t/**\n\t\t\t * All attributes must be strings.\n\t\t\t *\n\t\t\t * @error observable-bind-wrong-attrs\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'observable-bind-wrong-attrs: All attributes must be strings.' );\n\t\t}\n\n\t\tif ( ( new Set( bindAttrs ) ).size !== bindAttrs.length ) {\n\t\t\t/**\n\t\t\t * Attributes must be unique.\n\t\t\t *\n\t\t\t * @error observable-bind-duplicate-attrs\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'observable-bind-duplicate-attrs: Attributes must be unique.' );\n\t\t}\n\n\t\tinitObservable( this );\n\n\t\tconst boundAttributes = this[ boundAttributesSymbol ];\n\n\t\tbindAttrs.forEach( attrName => {\n\t\t\tif ( boundAttributes.has( attrName ) ) {\n\t\t\t\t/**\n\t\t\t\t * Cannot bind the same attribute more that once.\n\t\t\t\t *\n\t\t\t\t * @error observable-bind-rebind\n\t\t\t\t */\n\t\t\t\tthrow new CKEditorError( 'observable-bind-rebind: Cannot bind the same attribute more that once.' );\n\t\t\t}\n\t\t} );\n\n\t\tconst bindings = new Map();\n\n\t\t/**\n\t\t * @typedef Binding\n\t\t * @type Object\n\t\t * @property {Array} attr Attribute which is bound.\n\t\t * @property {Array} to Array of observable–attribute components of the binding (`{ observable: ..., attr: .. }`).\n\t\t * @property {Array} callback A function which processes `to` components.\n\t\t */\n\t\tbindAttrs.forEach( a => {\n\t\t\tconst binding = { attr: a, to: [] };\n\n\t\t\tboundAttributes.set( a, binding );\n\t\t\tbindings.set( a, binding );\n\t\t} );\n\n\t\t/**\n\t\t * @typedef BindChain\n\t\t * @type Object\n\t\t * @property {Function} to See {@link ~ObservableMixin#_bindTo}.\n\t\t * @property {module:utils/observablemixin~Observable} _observable The observable which initializes the binding.\n\t\t * @property {Array} _bindAttrs Array of `_observable` attributes to be bound.\n\t\t * @property {Array} _to Array of `to()` observable–attributes (`{ observable: toObservable, attrs: ...toAttrs }`).\n\t\t * @property {Map} _bindings Stores bindings to be kept in\n\t\t *  {@link ~ObservableMixin#_boundAttributes}/{@link ~ObservableMixin#_boundObservables}\n\t\t * initiated in this binding chain.\n\t\t */\n\t\treturn {\n\t\t\tto: bindTo,\n\n\t\t\t_observable: this,\n\t\t\t_bindAttrs: bindAttrs,\n\t\t\t_to: [],\n\t\t\t_bindings: bindings\n\t\t};\n\t},\n\n\t/**\n\t * Removes the binding created with {@link ~ObservableMixin#bind}.\n\t *\n\t *\t\tA.unbind( 'a' );\n\t *\t\tA.unbind();\n\t *\n\t * @method #unbind\n\t * @param {...String} [unbindAttrs] Observable attributes to be unbound. All the bindings will\n\t * be released if no attributes provided.\n\t */\n\tunbind( ...unbindAttrs ) {\n\t\t// Nothing to do here if not inited yet.\n\t\tif ( !( attributesSymbol in this ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst boundAttributes = this[ boundAttributesSymbol ];\n\t\tconst boundObservables = this[ boundObservablesSymbol ];\n\n\t\tif ( unbindAttrs.length ) {\n\t\t\tif ( !isStringArray( unbindAttrs ) ) {\n\t\t\t\t/**\n\t\t\t\t * Attributes must be strings.\n\t\t\t\t *\n\t\t\t\t * @error observable-unbind-wrong-attrs\n\t\t\t\t */\n\t\t\t\tthrow new CKEditorError( 'observable-unbind-wrong-attrs: Attributes must be strings.' );\n\t\t\t}\n\n\t\t\tunbindAttrs.forEach( attrName => {\n\t\t\t\tconst binding = boundAttributes.get( attrName );\n\t\t\t\tlet toObservable, toAttr, toAttrs, toAttrBindings;\n\n\t\t\t\tbinding.to.forEach( to => {\n\t\t\t\t\t// TODO: ES6 destructuring.\n\t\t\t\t\ttoObservable = to[ 0 ];\n\t\t\t\t\ttoAttr = to[ 1 ];\n\t\t\t\t\ttoAttrs = boundObservables.get( toObservable );\n\t\t\t\t\ttoAttrBindings = toAttrs[ toAttr ];\n\n\t\t\t\t\ttoAttrBindings.delete( binding );\n\n\t\t\t\t\tif ( !toAttrBindings.size ) {\n\t\t\t\t\t\tdelete toAttrs[ toAttr ];\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( !Object.keys( toAttrs ).length ) {\n\t\t\t\t\t\tboundObservables.delete( toObservable );\n\t\t\t\t\t\tthis.stopListening( toObservable, 'change' );\n\t\t\t\t\t}\n\t\t\t\t} );\n\n\t\t\t\tboundAttributes.delete( attrName );\n\t\t\t} );\n\t\t} else {\n\t\t\tboundObservables.forEach( ( bindings, boundObservable ) => {\n\t\t\t\tthis.stopListening( boundObservable, 'change' );\n\t\t\t} );\n\n\t\t\tboundObservables.clear();\n\t\t\tboundAttributes.clear();\n\t\t}\n\t}\n\n\t/**\n\t * @private\n\t * @member ~ObservableMixin#_boundAttributes\n\t */\n\n\t/**\n\t * @private\n\t * @member ~ObservableMixin#_boundObservables\n\t */\n\n\t/**\n\t * @private\n\t * @member ~ObservableMixin#_bindTo\n\t */\n};\n\nexport default ObservableMixin;\n\n// Init symbol properties needed to for the observable mechanism to work.\n//\n// @private\n// @param {module:utils/observablemixin~ObservableMixin} observable\nfunction initObservable( observable ) {\n\t// Do nothing if already inited.\n\tif ( attributesSymbol in observable ) {\n\t\treturn;\n\t}\n\n\t// The internal hash containing the observable's state.\n\t//\n\t// @private\n\t// @type {Map}\n\tObject.defineProperty( observable, attributesSymbol, {\n\t\tvalue: new Map()\n\t} );\n\n\t// Map containing bindings to external observables. It shares the binding objects\n\t// (`{ observable: A, attr: 'a', to: ... }`) with {@link module:utils/observablemixin~ObservableMixin#_boundAttributes} and\n\t// it is used to observe external observables to update own attributes accordingly.\n\t// See {@link module:utils/observablemixin~ObservableMixin#bind}.\n\t//\n\t//\t\tA.bind( 'a', 'b', 'c' ).to( B, 'x', 'y', 'x' );\n\t//\t\tconsole.log( A._boundObservables );\n\t//\n\t//\t\t\tMap( {\n\t//\t\t\t\tB: {\n\t//\t\t\t\t\tx: Set( [\n\t//\t\t\t\t\t\t{ observable: A, attr: 'a', to: [ [ B, 'x' ] ] },\n\t//\t\t\t\t\t\t{ observable: A, attr: 'c', to: [ [ B, 'x' ] ] }\n\t//\t\t\t\t\t] ),\n\t//\t\t\t\t\ty: Set( [\n\t//\t\t\t\t\t\t{ observable: A, attr: 'b', to: [ [ B, 'y' ] ] },\n\t//\t\t\t\t\t] )\n\t//\t\t\t\t}\n\t//\t\t\t} )\n\t//\n\t//\t\tA.bind( 'd' ).to( B, 'z' ).to( C, 'w' ).as( callback );\n\t//\t\tconsole.log( A._boundObservables );\n\t//\n\t//\t\t\tMap( {\n\t//\t\t\t\tB: {\n\t//\t\t\t\t\tx: Set( [\n\t//\t\t\t\t\t\t{ observable: A, attr: 'a', to: [ [ B, 'x' ] ] },\n\t//\t\t\t\t\t\t{ observable: A, attr: 'c', to: [ [ B, 'x' ] ] }\n\t//\t\t\t\t\t] ),\n\t//\t\t\t\t\ty: Set( [\n\t//\t\t\t\t\t\t{ observable: A, attr: 'b', to: [ [ B, 'y' ] ] },\n\t//\t\t\t\t\t] ),\n\t//\t\t\t\t\tz: Set( [\n\t//\t\t\t\t\t\t{ observable: A, attr: 'd', to: [ [ B, 'z' ], [ C, 'w' ] ], callback: callback }\n\t//\t\t\t\t\t] )\n\t//\t\t\t\t},\n\t//\t\t\t\tC: {\n\t//\t\t\t\t\tw: Set( [\n\t//\t\t\t\t\t\t{ observable: A, attr: 'd', to: [ [ B, 'z' ], [ C, 'w' ] ], callback: callback }\n\t//\t\t\t\t\t] )\n\t//\t\t\t\t}\n\t//\t\t\t} )\n\t//\n\t// @private\n\t// @type {Map}\n\tObject.defineProperty( observable, boundObservablesSymbol, {\n\t\tvalue: new Map()\n\t} );\n\n\t// Object that stores which attributes of this observable are bound and how. It shares\n\t// the binding objects (`{ observable: A, attr: 'a', to: ... }`) with {@link utils.ObservableMixin#_boundObservables}.\n\t// This data structure is a reverse of {@link utils.ObservableMixin#_boundObservables} and it is helpful for\n\t// {@link utils.ObservableMixin#unbind}.\n\t//\n\t// See {@link utils.ObservableMixin#bind}.\n\t//\n\t//\t\tA.bind( 'a', 'b', 'c' ).to( B, 'x', 'y', 'x' );\n\t//\t\tconsole.log( A._boundAttributes );\n\t//\n\t//\t\t\tMap( {\n\t//\t\t\t\ta: { observable: A, attr: 'a', to: [ [ B, 'x' ] ] },\n\t//\t\t\t\tb: { observable: A, attr: 'b', to: [ [ B, 'y' ] ] },\n\t//\t\t\t\tc: { observable: A, attr: 'c', to: [ [ B, 'x' ] ] }\n\t//\t\t\t} )\n\t//\n\t//\t\tA.bind( 'd' ).to( B, 'z' ).to( C, 'w' ).as( callback );\n\t//\t\tconsole.log( A._boundAttributes );\n\t//\n\t//\t\t\tMap( {\n\t//\t\t\t\ta: { observable: A, attr: 'a', to: [ [ B, 'x' ] ] },\n\t//\t\t\t\tb: { observable: A, attr: 'b', to: [ [ B, 'y' ] ] },\n\t//\t\t\t\tc: { observable: A, attr: 'c', to: [ [ B, 'x' ] ] },\n\t//\t\t\t\td: { observable: A, attr: 'd', to: [ [ B, 'z' ], [ C, 'w' ] ], callback: callback }\n\t//\t\t\t} )\n\t//\n\t// @private\n\t// @type {Map}\n\tObject.defineProperty( observable, boundAttributesSymbol, {\n\t\tvalue: new Map()\n\t} );\n}\n\n// A chaining for {@link module:utils/observablemixin~ObservableMixin#bind} providing `.to()` interface.\n//\n// @private\n// @param {...[Observable|String|Function]} args Arguments of the `.to( args )` binding.\nfunction bindTo( ...args ) {\n\t/* jshint validthis: true */\n\tconst parsedArgs = parseBindToArgs( ...args );\n\tconst bindingsKeys = Array.from( this._bindings.keys() );\n\tconst numberOfBindings = bindingsKeys.length;\n\n\t// Eliminate A.bind( 'x' ).to( B, C )\n\tif ( !parsedArgs.callback && parsedArgs.to.length > 1 ) {\n\t\t/**\n\t\t * Binding multiple observables only possible with callback.\n\t\t *\n\t\t * @error observable-bind-no-callback\n\t\t */\n\t\tthrow new CKEditorError( 'observable-bind-to-no-callback: Binding multiple observables only possible with callback.' ) ;\n\t}\n\n\t// Eliminate A.bind( 'x', 'y' ).to( B, callback )\n\tif ( numberOfBindings > 1 && parsedArgs.callback ) {\n\t\t/**\n\t\t * Cannot bind multiple attributes and use a callback in one binding.\n\t\t *\n\t\t * @error observable-bind-to-extra-callback\n\t\t */\n\t\tthrow new CKEditorError( 'observable-bind-to-extra-callback: Cannot bind multiple attributes and use a callback in one binding.' ) ;\n\t}\n\n\tparsedArgs.to.forEach( to => {\n\t\t// Eliminate A.bind( 'x', 'y' ).to( B, 'a' )\n\t\tif ( to.attrs.length && to.attrs.length !== numberOfBindings ) {\n\t\t\t/**\n\t\t\t * The number of attributes must match.\n\t\t\t *\n\t\t\t * @error observable-bind-to-attrs-length\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'observable-bind-to-attrs-length: The number of attributes must match.' );\n\t\t}\n\n\t\t// When no to.attrs specified, observing source attributes instead i.e.\n\t\t// A.bind( 'x', 'y' ).to( B ) -> Observe B.x and B.y\n\t\tif ( !to.attrs.length ) {\n\t\t\tto.attrs = this._bindAttrs;\n\t\t}\n\t} );\n\n\tthis._to = parsedArgs.to;\n\n\t// Fill {@link BindChain#_bindings} with callback. When the callback is set there's only one binding.\n\tif ( parsedArgs.callback ) {\n\t\tthis._bindings.get( bindingsKeys[ 0 ] ).callback = parsedArgs.callback;\n\t}\n\n\tattachBindToListeners( this._observable, this._to );\n\n\t// Update observable._boundAttributes and observable._boundObservables.\n\tupdateBindToBound( this );\n\n\t// Set initial values of bound attributes.\n\tthis._bindAttrs.forEach( attrName => {\n\t\tupdateBoundObservableAttr( this._observable, attrName );\n\t} );\n}\n\n// Check if all entries of the array are of `String` type.\n//\n// @private\n// @param {Array} arr An array to be checked.\n// @returns {Boolean}\nfunction isStringArray( arr ) {\n\treturn arr.every( a => typeof a == 'string' );\n}\n\n// Parses and validates {@link Observable#bind}`.to( args )` arguments and returns\n// an object with a parsed structure. For example\n//\n//\t\tA.bind( 'x' ).to( B, 'a', C, 'b', call );\n//\n// becomes\n//\n//\t\t{\n//\t\t\tto: [\n//\t\t\t\t{ observable: B, attrs: [ 'a' ] },\n//\t\t\t\t{ observable: C, attrs: [ 'b' ] },\n//\t\t\t],\n//\t\t\tcallback: call\n// \t\t}\n//\n// @private\n// @param {...*} args Arguments of {@link Observable#bind}`.to( args )`.\n// @returns {Object}\nfunction parseBindToArgs( ...args ) {\n\t// Eliminate A.bind( 'x' ).to()\n\tif ( !args.length ) {\n\t\t/**\n\t\t * Invalid argument syntax in `to()`.\n\t\t *\n\t\t * @error observable-bind-to-parse-error\n\t\t */\n\t\tthrow new CKEditorError( 'observable-bind-to-parse-error: Invalid argument syntax in `to()`.' );\n\t}\n\n\tconst parsed = { to: [] };\n\tlet lastObservable;\n\n\tif ( typeof args[ args.length - 1 ] == 'function' ) {\n\t\tparsed.callback = args.pop();\n\t}\n\n\targs.forEach( a => {\n\t\tif ( typeof a == 'string' ) {\n\t\t\tlastObservable.attrs.push( a );\n\t\t} else if ( typeof a == 'object' ) {\n\t\t\tlastObservable = { observable: a, attrs: [] };\n\t\t\tparsed.to.push( lastObservable );\n\t\t} else {\n\t\t\tthrow new CKEditorError( 'observable-bind-to-parse-error: Invalid argument syntax in `to()`.' );\n\t\t}\n\t} );\n\n\treturn parsed;\n}\n\n// Synchronizes {@link module:utils/observablemixin#_boundObservables} with {@link Binding}.\n//\n// @private\n// @param {Binding} binding A binding to store in {@link Observable#_boundObservables}.\n// @param {Observable} toObservable A observable, which is a new component of `binding`.\n// @param {String} toAttrName A name of `toObservable`'s attribute, a new component of the `binding`.\nfunction updateBoundObservables( observable, binding, toObservable, toAttrName ) {\n\tconst boundObservables = observable[ boundObservablesSymbol ];\n\tconst bindingsToObservable = boundObservables.get( toObservable );\n\tconst bindings = bindingsToObservable || {};\n\n\tif ( !bindings[ toAttrName ] ) {\n\t\tbindings[ toAttrName ] = new Set();\n\t}\n\n\t// Pass the binding to a corresponding Set in `observable._boundObservables`.\n\tbindings[ toAttrName ].add( binding );\n\n\tif ( !bindingsToObservable ) {\n\t\tboundObservables.set( toObservable, bindings );\n\t}\n}\n\n// Synchronizes {@link Observable#_boundAttributes} and {@link Observable#_boundObservables}\n// with {@link BindChain}.\n//\n// Assuming the following binding being created\n//\n// \t\tA.bind( 'a', 'b' ).to( B, 'x', 'y' );\n//\n// the following bindings were initialized by {@link Observable#bind} in {@link BindChain#_bindings}:\n//\n// \t\t{\n// \t\t\ta: { observable: A, attr: 'a', to: [] },\n// \t\t\tb: { observable: A, attr: 'b', to: [] },\n// \t\t}\n//\n// Iterate over all bindings in this chain and fill their `to` properties with\n// corresponding to( ... ) arguments (components of the binding), so\n//\n// \t\t{\n// \t\t\ta: { observable: A, attr: 'a', to: [ B, 'x' ] },\n// \t\t\tb: { observable: A, attr: 'b', to: [ B, 'y' ] },\n// \t\t}\n//\n// Then update the structure of {@link Observable#_boundObservables} with updated\n// binding, so it becomes:\n//\n// \t\tMap( {\n// \t\t\tB: {\n// \t\t\t\tx: Set( [\n// \t\t\t\t\t{ observable: A, attr: 'a', to: [ [ B, 'x' ] ] }\n// \t\t\t\t] ),\n// \t\t\t\ty: Set( [\n// \t\t\t\t\t{ observable: A, attr: 'b', to: [ [ B, 'y' ] ] },\n// \t\t\t\t] )\n//\t\t\t}\n// \t\t} )\n//\n// @private\n// @param {BindChain} chain The binding initialized by {@link Observable#bind}.\nfunction updateBindToBound( chain ) {\n\tlet toAttr;\n\n\tchain._bindings.forEach( ( binding, attrName ) => {\n\t\t// Note: For a binding without a callback, this will run only once\n\t\t// like in A.bind( 'x', 'y' ).to( B, 'a', 'b' )\n\t\t// TODO: ES6 destructuring.\n\t\tchain._to.forEach( to => {\n\t\t\ttoAttr = to.attrs[ binding.callback ? 0 : chain._bindAttrs.indexOf( attrName ) ];\n\n\t\t\tbinding.to.push( [ to.observable, toAttr ] );\n\t\t\tupdateBoundObservables( chain._observable, binding, to.observable, toAttr );\n\t\t} );\n\t} );\n}\n\n// Updates an attribute of a {@link Observable} with a value\n// determined by an entry in {@link Observable#_boundAttributes}.\n//\n// @private\n// @param {Observable} observable A observable which attribute is to be updated.\n// @param {String} attrName An attribute to be updated.\nfunction updateBoundObservableAttr( observable, attrName ) {\n\tconst boundAttributes = observable[ boundAttributesSymbol ];\n\tconst binding = boundAttributes.get( attrName );\n\tlet attrValue;\n\n\t// When a binding with callback is created like\n\t//\n\t// \t\tA.bind( 'a' ).to( B, 'b', C, 'c', callback );\n\t//\n\t// collect B.b and C.c, then pass them to callback to set A.a.\n\tif ( binding.callback ) {\n\t\tattrValue = binding.callback.apply( observable, binding.to.map( to => to[ 0 ][ to[ 1 ] ] ) );\n\t} else {\n\t\tattrValue = binding.to[ 0 ];\n\t\tattrValue = attrValue[ 0 ][ attrValue[ 1 ] ];\n\t}\n\n\tif ( observable.hasOwnProperty( attrName ) ) {\n\t\tobservable[ attrName ] = attrValue;\n\t} else {\n\t\tobservable.set( attrName, attrValue );\n\t}\n}\n\n// Starts listening to changes in {@link BindChain._to} observables to update\n// {@link BindChain._observable} {@link BindChain._bindAttrs}. Also sets the\n// initial state of {@link BindChain._observable}.\n//\n// @private\n// @param {BindChain} chain The chain initialized by {@link Observable#bind}.\nfunction attachBindToListeners( observable, toBindings ) {\n\ttoBindings.forEach( to => {\n\t\tconst boundObservables = observable[ boundObservablesSymbol ];\n\t\tlet bindings;\n\n\t\t// If there's already a chain between the observables (`observable` listens to\n\t\t// `to.observable`), there's no need to create another `change` event listener.\n\t\tif ( !boundObservables.get( to.observable ) ) {\n\t\t\tobservable.listenTo( to.observable, 'change', ( evt, attrName ) => {\n\t\t\t\tbindings = boundObservables.get( to.observable )[ attrName ];\n\n\t\t\t\t// Note: to.observable will fire for any attribute change, react\n\t\t\t\t// to changes of attributes which are bound only.\n\t\t\t\tif ( bindings ) {\n\t\t\t\t\tbindings.forEach( binding => {\n\t\t\t\t\t\tupdateBoundObservableAttr( observable, binding.attr );\n\t\t\t\t\t} );\n\t\t\t\t}\n\t\t\t} );\n\t\t}\n\t} );\n}\n\nextend( ObservableMixin, EmitterMixin );\n\n/**\n * Fired when an attribute changed value.\n *\n * @event module:utils/observablemixin~ObservableMixin#change:{attribute}\n * @param {String} name The attribute name.\n * @param {*} value The new attribute value.\n * @param {*} oldValue The previous attribute value.\n */\n\n/**\n * Interface representing classes which mix in {@link module:utils/observablemixin~ObservableMixin}.\n *\n * @interface Observable\n */\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/observablemixin.js\n// module id = 31\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/operation/operation\n */\n\nimport clone from '@ckeditor/ckeditor5-utils/src/lib/lodash/clone';\n\n/**\n * Abstract base operation class.\n *\n * @abstract\n */\nexport default class Operation {\n\t/**\n\t * Base operation constructor.\n\t * @param {Number} baseVersion {@link module:engine/model/document~Document#version} on which the operation can be applied.\n\t */\n\tconstructor( baseVersion ) {\n\t\t/**\n\t\t * {@link module:engine/model/document~Document#version} on which operation can be applied. If you try to\n\t\t * {@link module:engine/model/document~Document#applyOperation apply} operation with different base version than the\n\t\t * {@link module:engine/model/document~Document#version document version} the\n\t\t * {@link module:utils/ckeditorerror~CKEditorError model-document-applyOperation-wrong-version} error is thrown.\n\t\t *\n\t\t * @member {Number}\n\t\t */\n\t\tthis.baseVersion = baseVersion;\n\n\t\t/**\n\t\t * Operation type.\n\t\t *\n\t\t * @readonly\n\t\t * @member {String} #type\n\t\t */\n\n\t\t/**\n\t\t * {@link module:engine/model/delta/delta~Delta Delta} which the operation is a part of. This property is set by the\n\t\t * {@link module:engine/model/delta/delta~Delta delta} when the operations is added to it by the\n\t\t * {@link module:engine/model/delta/delta~Delta#addOperation} method.\n\t\t *\n\t\t * @member {module:engine/model/delta/delta~Delta} #delta\n\t\t */\n\n\t\t/**\n\t\t * Creates and returns an operation that has the same parameters as this operation.\n\t\t *\n\t\t * @method #clone\n\t\t * @returns {module:engine/model/operation/operation~Operation} Clone of this operation.\n\t\t */\n\n\t\t/**\n\t\t * Creates and returns a reverse operation. Reverse operation when executed right after\n\t\t * the original operation will bring back tree model state to the point before the original\n\t\t * operation execution. In other words, it reverses changes done by the original operation.\n\t\t *\n\t\t * Keep in mind that tree model state may change since executing the original operation,\n\t\t * so reverse operation will be \"outdated\". In that case you will need to\n\t\t * {@link module:engine/model/operation/transform~transform} it by all operations that were executed after the original operation.\n\t\t *\n\t\t * @method #getReversed\n\t\t * @returns {module:engine/model/operation/operation~Operation} Reversed operation.\n\t\t */\n\n\t\t/**\n\t\t * Executes the operation - modifications described by the operation attributes\n\t\t * will be applied to the tree model.\n\t\t *\n\t\t * @protected\n\t\t * @method #_execute\n\t\t * @returns {Object} Object with additional information about the applied changes. It properties depends on the\n\t\t * operation type.\n\t\t */\n\t}\n\n\t/**\n\t * Custom toJSON method to solve child-parent circular dependencies.\n\t *\n\t * @method #toJSON\n\t * @returns {Object} Clone of this object with the delta property replaced with string.\n\t */\n\ttoJSON() {\n\t\tconst json = clone( this, true );\n\n\t\tjson.__className = this.constructor.className;\n\n\t\t// Remove parent delta to avoid circular dependencies.\n\t\tdelete json.delta;\n\n\t\treturn json;\n\t}\n\n\t/**\n\t * Name of the operation class used for serialization.\n\t *\n\t * @type {String}\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.operation.Operation';\n\t}\n\n\t/**\n\t * Creates Operation object from deserilized object, i.e. from parsed JSON string.\n\t *\n\t * @param {Object} json Deserialized JSON object.\n\t * @param {module:engine/model/document~Document} doc Document on which this operation will be applied.\n\t * @returns {module:engine/model/operation/operation~Operation}\n\t */\n\tstatic fromJSON( json ) {\n\t\treturn new this( json.baseVersion );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/operation/operation.js\n// module id = 32\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/treewalker\n */\n\nimport Text from './text';\nimport TextProxy from './textproxy';\nimport Element from './element';\nimport Position from './position';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/**\n * Position iterator class. It allows to iterate forward and backward over the document.\n */\nexport default class TreeWalker {\n\t/**\n\t * Creates a range iterator. All parameters are optional, but you have to specify either `boundaries` or `startPosition`.\n\t *\n\t * @constructor\n\t * @param {Object} [options={}] Object with configuration.\n\t * @param {'forward'|'backward'} [options.direction='forward'] Walking direction.\n\t * @param {module:engine/model/range~Range} [options.boundaries=null] Range to define boundaries of the iterator.\n\t * @param {module:engine/model/position~Position} [options.startPosition] Starting position.\n\t * @param {Boolean} [options.singleCharacters=false] Flag indicating whether all consecutive characters with the same attributes\n\t * should be returned one by one as multiple {@link module:engine/model/textproxy~TextProxy} (`true`) objects or as one\n\t * {@link module:engine/model/textproxy~TextProxy} (`false`).\n\t * @param {Boolean} [options.shallow=false] Flag indicating whether iterator should enter elements or not. If the\n\t * iterator is shallow child nodes of any iterated node will not be returned along with `elementEnd` tag.\n\t * @param {Boolean} [options.ignoreElementEnd=false] Flag indicating whether iterator should ignore `elementEnd`\n\t * tags. If the option is true walker will not return a parent node of start position. If this option is `true`\n\t * each {@link module:engine/model/element~Element} will be returned once, while if the option is `false` they might be returned\n\t * twice: for `'elementStart'` and `'elementEnd'`.\n\t */\n\tconstructor( options = {} ) {\n\t\tif ( !options.boundaries && !options.startPosition ) {\n\t\t\t/**\n\t\t\t * Neither boundaries nor starting position have been defined.\n\t\t\t *\n\t\t\t * @error tree-walker-no-start-position\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'model-tree-walker-no-start-position: Neither boundaries nor starting position have been defined.' );\n\t\t}\n\n\t\tconst direction = options.direction || 'forward';\n\n\t\tif ( direction != 'forward' && direction != 'backward' ) {\n\t\t\tthrow new CKEditorError(\n\t\t\t\t'model-tree-walker-unknown-direction: Only `backward` and `forward` direction allowed.',\n\t\t\t\t{ direction }\n\t\t\t);\n\t\t}\n\n\t\t/**\n\t\t * Walking direction. Defaults `'forward'`.\n\t\t *\n\t\t * @readonly\n\t\t * @member {'backward'|'forward'} module:engine/model/treewalker~TreeWalker#direction\n\t\t */\n\t\tthis.direction = direction;\n\n\t\t/**\n\t\t * Iterator boundaries.\n\t\t *\n\t\t * When the iterator is walking `'forward'` on the end of boundary or is walking `'backward'`\n\t\t * on the start of boundary, then `{ done: true }` is returned.\n\t\t *\n\t\t * If boundaries are not defined they are set before first and after last child of the root node.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/model/range~Range} module:engine/model/treewalker~TreeWalker#boundaries\n\t\t */\n\t\tthis.boundaries = options.boundaries || null;\n\n\t\t/**\n\t\t * Iterator position. This is always static position, even if the initial position was a\n\t\t * {@link module:engine/model/liveposition~LivePosition live position}. If start position is not defined then position depends\n\t\t * on {@link #direction}. If direction is `'forward'` position starts form the beginning, when direction\n\t\t * is `'backward'` position starts from the end.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/model/position~Position} module:engine/model/treewalker~TreeWalker#position\n\t\t */\n\t\tif ( options.startPosition ) {\n\t\t\tthis.position = Position.createFromPosition( options.startPosition );\n\t\t} else {\n\t\t\tthis.position = Position.createFromPosition( this.boundaries[ this.direction == 'backward' ? 'end' : 'start' ] );\n\t\t}\n\n\t\t/**\n\t\t * Flag indicating whether all consecutive characters with the same attributes should be\n\t\t * returned as one {@link module:engine/model/textproxy~TextProxy} (`true`) or one by one (`false`).\n\t\t *\n\t\t * @readonly\n\t\t * @member {Boolean} module:engine/model/treewalker~TreeWalker#singleCharacters\n\t\t */\n\t\tthis.singleCharacters = !!options.singleCharacters;\n\n\t\t/**\n\t\t * Flag indicating whether iterator should enter elements or not. If the iterator is shallow child nodes of any\n\t\t * iterated node will not be returned along with `elementEnd` tag.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Boolean} module:engine/model/treewalker~TreeWalker#shallow\n\t\t */\n\t\tthis.shallow = !!options.shallow;\n\n\t\t/**\n\t\t * Flag indicating whether iterator should ignore `elementEnd` tags. If the option is true walker will not\n\t\t * return a parent node of the start position. If this option is `true` each {@link module:engine/model/element~Element} will\n\t\t * be returned once, while if the option is `false` they might be returned twice:\n\t\t * for `'elementStart'` and `'elementEnd'`.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Boolean} module:engine/model/treewalker~TreeWalker#ignoreElementEnd\n\t\t */\n\t\tthis.ignoreElementEnd = !!options.ignoreElementEnd;\n\n\t\t/**\n\t\t * Start boundary cached for optimization purposes.\n\t\t *\n\t\t * @private\n\t\t * @member {module:engine/model/element~Element} module:engine/model/treewalker~TreeWalker#_boundaryStartParent\n\t\t */\n\t\tthis._boundaryStartParent = this.boundaries ? this.boundaries.start.parent : null;\n\n\t\t/**\n\t\t * End boundary cached for optimization purposes.\n\t\t *\n\t\t * @private\n\t\t * @member {module:engine/model/element~Element} module:engine/model/treewalker~TreeWalker#_boundaryEndParent\n\t\t */\n\t\tthis._boundaryEndParent = this.boundaries ? this.boundaries.end.parent : null;\n\n\t\t/**\n\t\t * Parent of the most recently visited node. Cached for optimization purposes.\n\t\t *\n\t\t * @private\n\t\t * @member {module:engine/model/element~Element|module:engine/model/documentfragment~DocumentFragment}\n\t\t * module:engine/model/treewalker~TreeWalker#_visitedParent\n\t\t */\n\t\tthis._visitedParent = this.position.parent;\n\t}\n\n\t/**\n\t * Iterator interface.\n\t */\n\t[ Symbol.iterator ]() {\n\t\treturn this;\n\t}\n\n\t/**\n\t * Moves {@link #position} in the {@link #direction} skipping values as long as the callback function returns `true`.\n\t *\n\t * For example:\n\t *\n\t * \t\twalker.skip( value => value.type == 'text' ); // <paragraph>[]foo</paragraph> -> <paragraph>foo[]</paragraph>\n\t * \t\twalker.skip( () => true ); // Move the position to the end: <paragraph>[]foo</paragraph> -> <paragraph>foo</paragraph>[]\n\t * \t\twalker.skip( () => false ); // Do not move the position.\n\t *\n\t * @param {Function} skip Callback function. Gets {@link module:engine/model/treewalker~TreeWalkerValue} and should\n\t * return `true` if the value should be skipped or `false` if not.\n\t */\n\tskip( skip ) {\n\t\tlet done, value, prevPosition, prevVisitedParent;\n\n\t\tdo {\n\t\t\tprevPosition = this.position;\n\t\t\tprevVisitedParent = this._visitedParent;\n\n\t\t\t( { done, value } = this.next() );\n\t\t} while ( !done && skip( value ) );\n\n\t\tif ( !done ) {\n\t\t\tthis.position = prevPosition;\n\t\t\tthis._visitedParent = prevVisitedParent;\n\t\t}\n\t}\n\n\t/**\n\t * Iterator interface method.\n\t * Detects walking direction and makes step forward or backward.\n\t *\n\t * @returns {Object} Object implementing iterator interface, returning information about taken step.\n\t */\n\tnext() {\n\t\tif ( this.direction == 'forward' ) {\n\t\t\treturn this._next();\n\t\t} else {\n\t\t\treturn this._previous();\n\t\t}\n\t}\n\n\t/**\n\t * Makes a step forward in model. Moves the {@link #position} to the next position and returns the encountered value.\n\t *\n\t * @private\n\t * @returns {Object}\n\t * @returns {Boolean} return.done True if iterator is done.\n\t * @returns {module:engine/model/treewalker~TreeWalkerValue} return.value Information about taken step.\n\t */\n\t_next() {\n\t\tconst previousPosition = this.position;\n\t\tconst position = Position.createFromPosition( this.position );\n\t\tconst parent = this._visitedParent;\n\n\t\t// We are at the end of the root.\n\t\tif ( parent.parent === null && position.offset === parent.maxOffset ) {\n\t\t\treturn { done: true };\n\t\t}\n\n\t\t// We reached the walker boundary.\n\t\tif ( parent === this._boundaryEndParent && position.offset == this.boundaries.end.offset ) {\n\t\t\treturn { done: true };\n\t\t}\n\n\t\tconst node = position.textNode ? position.textNode : position.nodeAfter;\n\n\t\tif ( node instanceof Element ) {\n\t\t\tif ( !this.shallow ) {\n\t\t\t\t// Manual operations on path internals for optimization purposes. Here and in the rest of the method.\n\t\t\t\tposition.path.push( 0 );\n\t\t\t\tthis._visitedParent = node;\n\t\t\t} else {\n\t\t\t\tposition.offset++;\n\t\t\t}\n\n\t\t\tthis.position = position;\n\n\t\t\treturn formatReturnValue( 'elementStart', node, previousPosition, position, 1 );\n\t\t} else if ( node instanceof Text ) {\n\t\t\tlet charactersCount, offsetInTextNode;\n\n\t\t\tif ( this.singleCharacters ) {\n\t\t\t\tcharactersCount = 1;\n\t\t\t} else {\n\t\t\t\tlet offset = node.endOffset;\n\n\t\t\t\tif ( this._boundaryEndParent == parent && this.boundaries.end.offset < offset ) {\n\t\t\t\t\toffset = this.boundaries.end.offset;\n\t\t\t\t}\n\n\t\t\t\tcharactersCount = offset - position.offset;\n\t\t\t}\n\n\t\t\toffsetInTextNode = position.offset - node.startOffset;\n\n\t\t\tconst item = new TextProxy( node, offsetInTextNode, charactersCount );\n\n\t\t\tposition.offset += charactersCount;\n\t\t\tthis.position = position;\n\n\t\t\treturn formatReturnValue( 'text', item, previousPosition, position, charactersCount );\n\t\t} else {\n\t\t\t// `node` is not set, we reached the end of current `parent`.\n\t\t\tposition.path.pop();\n\t\t\tposition.offset++;\n\t\t\tthis.position = position;\n\t\t\tthis._visitedParent = parent.parent;\n\n\t\t\tif ( this.ignoreElementEnd ) {\n\t\t\t\treturn this._next();\n\t\t\t} else {\n\t\t\t\treturn formatReturnValue( 'elementEnd', parent, previousPosition, position );\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Makes a step backward in model. Moves the {@link #position} to the previous position and returns the encountered value.\n\t *\n\t * @private\n\t * @returns {Object}\n\t * @returns {Boolean} return.done True if iterator is done.\n\t * @returns {module:engine/model/treewalker~TreeWalkerValue} return.value Information about taken step.\n\t */\n\t_previous() {\n\t\tconst previousPosition = this.position;\n\t\tconst position = Position.createFromPosition( this.position );\n\t\tconst parent = this._visitedParent;\n\n\t\t// We are at the beginning of the root.\n\t\tif ( parent.parent === null && position.offset === 0 ) {\n\t\t\treturn { done: true };\n\t\t}\n\n\t\t// We reached the walker boundary.\n\t\tif ( parent == this._boundaryStartParent && position.offset == this.boundaries.start.offset ) {\n\t\t\treturn { done: true };\n\t\t}\n\n\t\t// Get node just before current position\n\t\tconst node = position.textNode ? position.textNode : position.nodeBefore;\n\n\t\tif ( node instanceof Element ) {\n\t\t\tposition.offset--;\n\n\t\t\tif ( !this.shallow ) {\n\t\t\t\tposition.path.push( node.maxOffset );\n\t\t\t\tthis.position = position;\n\t\t\t\tthis._visitedParent = node;\n\n\t\t\t\tif ( this.ignoreElementEnd ) {\n\t\t\t\t\treturn this._previous();\n\t\t\t\t} else {\n\t\t\t\t\treturn formatReturnValue( 'elementEnd', node, previousPosition, position );\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\tthis.position = position;\n\n\t\t\t\treturn formatReturnValue( 'elementStart', node, previousPosition, position, 1 );\n\t\t\t}\n\t\t} else if ( node instanceof Text ) {\n\t\t\tlet charactersCount, offsetInTextNode;\n\n\t\t\tif ( this.singleCharacters ) {\n\t\t\t\tcharactersCount = 1;\n\t\t\t} else {\n\t\t\t\tlet offset = node.startOffset;\n\n\t\t\t\tif ( this._boundaryStartParent == parent && this.boundaries.start.offset > offset ) {\n\t\t\t\t\toffset = this.boundaries.start.offset;\n\t\t\t\t}\n\n\t\t\t\tcharactersCount = position.offset - offset;\n\t\t\t}\n\n\t\t\toffsetInTextNode = position.offset - node.startOffset;\n\n\t\t\tconst item = new TextProxy( node, offsetInTextNode - charactersCount, charactersCount );\n\n\t\t\tposition.offset -= charactersCount;\n\t\t\tthis.position = position;\n\n\t\t\treturn formatReturnValue( 'text', item, previousPosition, position, charactersCount );\n\t\t} else {\n\t\t\t// `node` is not set, we reached the beginning of current `parent`.\n\t\t\tposition.path.pop();\n\t\t\tthis.position = position;\n\t\t\tthis._visitedParent = parent.parent;\n\n\t\t\treturn formatReturnValue( 'elementStart', parent, previousPosition, position, 1 );\n\t\t}\n\t}\n}\n\nfunction formatReturnValue( type, item, previousPosition, nextPosition, length ) {\n\treturn {\n\t\tdone: false,\n\t\tvalue: {\n\t\t\ttype: type,\n\t\t\titem: item,\n\t\t\tpreviousPosition: previousPosition,\n\t\t\tnextPosition: nextPosition,\n\t\t\tlength: length\n\t\t}\n\t};\n}\n\n/**\n * Type of the step made by {@link module:engine/model/treewalker~TreeWalker}.\n * Possible values: `'elementStart'` if walker is at the beginning of a node, `'elementEnd'` if walker is at the end of node,\n * `'character'` if walker traversed over a character, or `'text'` if walker traversed over multiple characters (available in\n * character merging mode, see {@link module:engine/model/treewalker~TreeWalker#constructor}).\n *\n * @typedef {'elementStart'|'elementEnd'|'character'|'text'} module:engine/model/treewalker~TreeWalkerValueType\n */\n\n/**\n * Object returned by {@link module:engine/model/treewalker~TreeWalker} when traversing tree model.\n *\n * @typedef {Object} module:engine/model/treewalker~TreeWalkerValue\n * @property {module:engine/model/treewalker~TreeWalkerValueType} type\n * @property {module:engine/model/item~Item} item Item between old and new positions of {@link module:engine/model/treewalker~TreeWalker}.\n * @property {module:engine/model/position~Position} previousPosition Previous position of the iterator.\n * * Forward iteration: For `'elementEnd'` it is the last position inside the element. For all other types it is the\n * position before the item. Note that it is more efficient to use this position then calculate the position before\n * the node using {@link module:engine/model/position~Position.createBefore}. It is also more efficient to get the\n * position after node by shifting `previousPosition` by `length`, using {@link module:engine/model/position~Position#getShiftedBy},\n * then calculate the position using {@link module:engine/model/position~Position.createAfter}.\n * * Backward iteration: For `'elementStart'` it is the first position inside the element. For all other types it is\n * the position after item.\n * @property {module:engine/model/position~Position} nextPosition Next position of the iterator.\n * * Forward iteration: For `'elementStart'` it is the first position inside the element. For all other types it is\n * the position after the item.\n * * Backward iteration: For `'elementEnd'` it is last position inside element. For all other types it is the position\n * before the item.\n * @property {Number} [length] Length of the item. For `'elementStart'` and `'character'` it is 1. For `'text'` it is\n * the length of the text. For `'elementEnd'` it is undefined.\n */\n\n/**\n * Tree walking directions.\n *\n * @typedef {'forward'|'backward'} module:engine/view/treewalker~TreeWalkerDirection\n */\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/treewalker.js\n// module id = 33\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/range\n */\n\nimport Position from './position';\nimport TreeWalker from './treewalker';\n\n/**\n * Tree view range.\n */\nexport default class Range {\n\t/**\n\t * Creates a range spanning from `start` position to `end` position.\n\t *\n\t * **Note:** Constructor creates it's own {@link module:engine/view/position~Position} instances basing on passed values.\n\t *\n\t * @param {module:engine/view/position~Position} start Start position.\n\t * @param {module:engine/view/position~Position} [end] End position. If not set, range will be collapsed at `start` position.\n\t */\n\tconstructor( start, end = null ) {\n\t\t/**\n\t\t * Start position.\n\t\t *\n\t\t * @member {module:engine/view/position~Position}\n\t\t */\n\t\tthis.start = Position.createFromPosition( start );\n\n\t\t/**\n\t\t * End position.\n\t\t *\n\t\t * @member {module:engine/view/position~Position}\n\t\t */\n\t\tthis.end = end ? Position.createFromPosition( end ) : Position.createFromPosition( start );\n\t}\n\n\t/**\n\t * Returns an iterator that iterates over all {@link module:engine/view/item~Item view items} that are in this range and returns\n\t * them together with additional information like length or {@link module:engine/view/position~Position positions},\n\t * grouped as {@link module:engine/view/treewalker~TreeWalkerValue}.\n\t *\n\t * This iterator uses {@link module:engine/view/treewalker~TreeWalker TreeWalker} with `boundaries` set to this range and\n\t * `ignoreElementEnd` option\n\t * set to `true`.\n\t *\n\t * @returns {Iterable.<module:engine/view/treewalker~TreeWalkerValue>}\n\t */\n\t*[ Symbol.iterator ]() {\n\t\tyield* new TreeWalker( { boundaries: this, ignoreElementEnd: true } );\n\t}\n\n\t/**\n\t * Returns whether the range is collapsed, that is it start and end positions are equal.\n\t *\n\t * @type {Boolean}\n\t */\n\tget isCollapsed() {\n\t\treturn this.start.isEqual( this.end );\n\t}\n\n\t/**\n\t * Returns whether this range is flat, that is if {@link module:engine/view/range~Range#start start} position and\n\t * {@link module:engine/view/range~Range#end end} position are in the same {@link module:engine/view/position~Position#parent parent}.\n\t *\n\t * @type {Boolean}\n\t */\n\tget isFlat() {\n\t\treturn this.start.parent === this.end.parent;\n\t}\n\n\t/**\n\t * Range root element.\n\t *\n\t * @type {module:engine/view/element~Element|module:engine/view/documentfragment~DocumentFragment}\n\t */\n\tget root() {\n\t\treturn this.start.root;\n\t}\n\n\t/**\n\t * Creates a maximal range that has the same content as this range but is expanded in both ways (at the beginning\n\t * and at the end).\n\t *\n\t * For example:\n\t *\n\t * \t\t<p>Foo</p><p><b>{Bar}</b></p> -> <p>Foo</p>[<p><b>Bar</b>]</p>\n\t * \t\t<p><b>foo</b>{bar}<span></span></p> -> <p><b>foo[</b>bar<span></span>]</p>\n\t *\n\t * Note that in the sample above:\n\t *  - `<p>` have type of {@link module:engine/view/containerelement~ContainerElement},\n\t *  - `<b>` have type of {@link module:engine/view/attributeelement~AttributeElement},\n\t *  - `<span>` have type of {@link module:engine/view/uielement~UIElement}.\n\t *\n\t * @returns {module:engine/view/range~Range} Enlarged range.\n\t */\n\tgetEnlarged() {\n\t\tlet start = this.start.getLastMatchingPosition( enlargeShrinkSkip, { direction: 'backward' } );\n\t\tlet end = this.end.getLastMatchingPosition( enlargeShrinkSkip );\n\n\t\t// Fix positions, in case if they are in Text node.\n\t\tif ( start.parent.is( 'text' ) && start.isAtStart ) {\n\t\t\tstart = Position.createBefore( start.parent );\n\t\t}\n\n\t\tif ( end.parent.is( 'text' ) && end.isAtEnd ) {\n\t\t\tend = Position.createAfter( end.parent );\n\t\t}\n\n\t\treturn new Range( start, end );\n\t}\n\n\t/**\n\t * Creates a minimum range that has the same content as this range but is trimmed in both ways (at the beginning\n\t * and at the end).\n\t *\n\t * For example:\n\t *\n\t * \t\t<p>Foo</p>[<p><b>Bar</b>]</p> -> <p>Foo</p><p><b>{Bar}</b></p>\n\t * \t\t<p><b>foo[</b>bar<span></span>]</p> -> <p><b>foo</b>{bar}<span></span></p>\n\t *\n\t * Note that in the sample above:\n\t *  - `<p>` have type of {@link module:engine/view/containerelement~ContainerElement},\n\t *  - `<b>` have type of {@link module:engine/view/attributeelement~AttributeElement},\n\t *  - `<span>` have type of {@link module:engine/view/uielement~UIElement}.\n\t *\n\t * @returns {module:engine/view/range~Range} Shrink range.\n\t */\n\tgetTrimmed() {\n\t\tlet start = this.start.getLastMatchingPosition( enlargeShrinkSkip );\n\t\tlet end = this.end.getLastMatchingPosition( enlargeShrinkSkip, { direction: 'backward' } );\n\t\tlet nodeAfterStart = start.nodeAfter;\n\t\tlet nodeBeforeEnd = end.nodeBefore;\n\n\t\t// Because TreeWalker prefers positions next to text node, we need to move them manually into these text nodes.\n\t\tif ( nodeAfterStart && nodeAfterStart.is( 'text' ) ) {\n\t\t\tstart = new Position( nodeAfterStart, 0 );\n\t\t}\n\n\t\tif ( nodeBeforeEnd && nodeBeforeEnd.is( 'text' ) ) {\n\t\t\tend = new Position( nodeBeforeEnd, nodeBeforeEnd.data.length );\n\t\t}\n\n\t\treturn new Range( start, end );\n\t}\n\n\t/**\n\t * Two ranges are equal if their start and end positions are equal.\n\t *\n\t * @param {module:engine/view/range~Range} otherRange Range to compare with.\n\t * @returns {Boolean} `true` if ranges are equal, `false` otherwise\n\t */\n\tisEqual( otherRange ) {\n\t\treturn this == otherRange || ( this.start.isEqual( otherRange.start ) && this.end.isEqual( otherRange.end ) );\n\t}\n\n\t/**\n\t * Checks whether this range contains given {@link module:engine/view/position~Position position}.\n\t *\n\t * @param {module:engine/view/position~Position} position Position to check.\n\t * @returns {Boolean} `true` if given {@link module:engine/view/position~Position position} is contained in this range, `false` otherwise.\n\t */\n\tcontainsPosition( position ) {\n\t\treturn position.isAfter( this.start ) && position.isBefore( this.end );\n\t}\n\n\t/**\n\t * Checks whether this range contains given {@link module:engine/view/range~Range range}.\n\t *\n\t * @param {module:engine/view/range~Range} otherRange Range to check.\n\t * @returns {Boolean} `true` if given {@link module:engine/view/range~Range range} boundaries are contained by this range, `false`\n\t * otherwise.\n\t */\n\tcontainsRange( otherRange ) {\n\t\treturn this.containsPosition( otherRange.start ) && this.containsPosition( otherRange.end );\n\t}\n\n\t/**\n\t * Computes which part(s) of this {@link module:engine/view/range~Range range} is not a part of given\n\t * {@link module:engine/view/range~Range range}.\n\t * Returned array contains zero, one or two {@link module:engine/view/range~Range ranges}.\n\t *\n\t * Examples:\n\t *\n\t *\t\tlet foo = new Text( 'foo' );\n\t *\t\tlet img = new ContainerElement( 'img' );\n\t *\t\tlet bar = new Text( 'bar' );\n\t *\t\tlet p = new ContainerElement( 'p', null, [ foo, img, bar ] );\n\t *\n\t *\t\tlet range = new Range( new Position( foo, 2 ), new Position( bar, 1 ); // \"o\", img, \"b\" are in range.\n\t *\t\tlet otherRange = new Range( new Position( foo, 1 ), new Position( bar, 2 ); \"oo\", img, \"ba\" are in range.\n\t *\t\tlet transformed = range.getDifference( otherRange );\n\t *\t\t// transformed array has no ranges because `otherRange` contains `range`\n\t *\n\t *\t\totherRange = new Range( new Position( foo, 1 ), new Position( p, 2 ); // \"oo\", img are in range.\n\t *\t\ttransformed = range.getDifference( otherRange );\n\t *\t\t// transformed array has one range: from ( p, 2 ) to ( bar, 1 )\n\t *\n\t *\t\totherRange = new Range( new Position( p, 1 ), new Position( p, 2 ) ); // img is in range.\n\t *\t\ttransformed = range.getDifference( otherRange );\n\t *\t\t// transformed array has two ranges: from ( foo, 1 ) to ( p, 1 ) and from ( p, 2 ) to ( bar, 1 )\n\t *\n\t * @param {module:engine/view/range~Range} otherRange Range to differentiate against.\n\t * @returns {Array.<module:engine/view/range~Range>} The difference between ranges.\n\t */\n\tgetDifference( otherRange ) {\n\t\tconst ranges = [];\n\n\t\tif ( this.isIntersecting( otherRange ) ) {\n\t\t\t// Ranges intersect.\n\n\t\t\tif ( this.containsPosition( otherRange.start ) ) {\n\t\t\t\t// Given range start is inside this range. This means that we have to\n\t\t\t\t// add shrunken range - from the start to the middle of this range.\n\t\t\t\tranges.push( new Range( this.start, otherRange.start ) );\n\t\t\t}\n\n\t\t\tif ( this.containsPosition( otherRange.end ) ) {\n\t\t\t\t// Given range end is inside this range. This means that we have to\n\t\t\t\t// add shrunken range - from the middle of this range to the end.\n\t\t\t\tranges.push( new Range( otherRange.end, this.end ) );\n\t\t\t}\n\t\t} else {\n\t\t\t// Ranges do not intersect, return the original range.\n\t\t\tranges.push( Range.createFromRange( this ) );\n\t\t}\n\n\t\treturn ranges;\n\t}\n\n\t/**\n\t * Returns an intersection of this {@link module:engine/view/range~Range range} and given {@link module:engine/view/range~Range range}.\n\t * Intersection is a common part of both of those ranges. If ranges has no common part, returns `null`.\n\t *\n\t * Examples:\n\t *\n\t *\t\tlet foo = new Text( 'foo' );\n\t *\t\tlet img = new ContainerElement( 'img' );\n\t *\t\tlet bar = new Text( 'bar' );\n\t *\t\tlet p = new ContainerElement( 'p', null, [ foo, img, bar ] );\n\t *\n\t *\t\tlet range = new Range( new Position( foo, 2 ), new Position( bar, 1 ); // \"o\", img, \"b\" are in range.\n\t *\t\tlet otherRange = new Range( new Position( foo, 1 ), new Position( p, 2 ); // \"oo\", img are in range.\n\t *\t\tlet transformed = range.getIntersection( otherRange ); // range from ( foo, 1 ) to ( p, 2 ).\n\t *\n\t *\t\totherRange = new Range( new Position( bar, 1 ), new Position( bar, 3 ); \"ar\" is in range.\n\t *\t\ttransformed = range.getIntersection( otherRange ); // null - no common part.\n\t *\n\t * @param {module:engine/view/range~Range} otherRange Range to check for intersection.\n\t * @returns {module:engine/view/range~Range|null} A common part of given ranges or `null` if ranges have no common part.\n\t */\n\tgetIntersection( otherRange ) {\n\t\tif ( this.isIntersecting( otherRange ) ) {\n\t\t\t// Ranges intersect, so a common range will be returned.\n\t\t\t// At most, it will be same as this range.\n\t\t\tlet commonRangeStart = this.start;\n\t\t\tlet commonRangeEnd = this.end;\n\n\t\t\tif ( this.containsPosition( otherRange.start ) ) {\n\t\t\t\t// Given range start is inside this range. This means thaNt we have to\n\t\t\t\t// shrink common range to the given range start.\n\t\t\t\tcommonRangeStart = otherRange.start;\n\t\t\t}\n\n\t\t\tif ( this.containsPosition( otherRange.end ) ) {\n\t\t\t\t// Given range end is inside this range. This means that we have to\n\t\t\t\t// shrink common range to the given range end.\n\t\t\t\tcommonRangeEnd = otherRange.end;\n\t\t\t}\n\n\t\t\treturn new Range( commonRangeStart, commonRangeEnd );\n\t\t}\n\n\t\t// Ranges do not intersect, so they do not have common part.\n\t\treturn null;\n\t}\n\n\t/**\n\t * Creates a {@link module:engine/view/treewalker~TreeWalker TreeWalker} instance with this range as a boundary.\n\t *\n\t * @param {Object} options Object with configuration options. See {@link module:engine/view/treewalker~TreeWalker}.\n\t * @param {module:engine/view/position~Position} [options.startPosition]\n\t * @param {Boolean} [options.singleCharacters=false]\n\t * @param {Boolean} [options.shallow=false]\n\t * @param {Boolean} [options.ignoreElementEnd=false]\n\t */\n\tgetWalker( options = {} ) {\n\t\toptions.boundaries = this;\n\n\t\treturn new TreeWalker( options );\n\t}\n\n\t/**\n\t * Returns an iterator that iterates over all {@link module:engine/view/item~Item view items} that are in this range and returns\n\t * them.\n\t *\n\t * This method uses {@link module:engine/view/treewalker~TreeWalker} with `boundaries` set to this range and `ignoreElementEnd` option\n\t * set to `true`. However it returns only {@link module:engine/view/item~Item items},\n\t * not {@link module:engine/view/treewalker~TreeWalkerValue}.\n\t *\n\t * You may specify additional options for the tree walker. See {@link module:engine/view/treewalker~TreeWalker} for\n\t * a full list of available options.\n\t *\n\t * @param {Object} options Object with configuration options. See {@link module:engine/view/treewalker~TreeWalker}.\n\t * @returns {Iterable.<module:engine/view/item~Item>}\n\t */\n\t*getItems( options = {} ) {\n\t\toptions.boundaries = this;\n\t\toptions.ignoreElementEnd = true;\n\n\t\tconst treeWalker = new TreeWalker( options );\n\n\t\tfor ( let value of treeWalker ) {\n\t\t\tyield value.item;\n\t\t}\n\t}\n\n\t/**\n\t * Returns an iterator that iterates over all {@link module:engine/view/position~Position positions} that are boundaries or\n\t * contained in this range.\n\t *\n\t * This method uses {@link module:engine/view/treewalker~TreeWalker} with `boundaries` set to this range. However it returns only\n\t * {@link module:engine/view/position~Position positions}, not {@link module:engine/view/treewalker~TreeWalkerValue}.\n\t *\n\t * You may specify additional options for the tree walker. See {@link module:engine/view/treewalker~TreeWalker} for\n\t * a full list of available options.\n\t *\n\t * @param {Object} options Object with configuration options. See {@link module:engine/view/treewalker~TreeWalker}.\n\t * @returns {Iterable.<module:engine/view/position~Position>}\n\t */\n\t*getPositions( options = {} ) {\n\t\toptions.boundaries = this;\n\n\t\tconst treeWalker = new TreeWalker( options );\n\n\t\tyield treeWalker.position;\n\n\t\tfor ( let value of treeWalker ) {\n\t\t\tyield value.nextPosition;\n\t\t}\n\t}\n\n\t/**\n\t * Checks and returns whether this range intersects with given range.\n\t *\n\t * @param {module:engine/view/range~Range} otherRange Range to compare with.\n\t * @returns {Boolean} True if ranges intersect.\n\t */\n\tisIntersecting( otherRange ) {\n\t\treturn this.start.isBefore( otherRange.end ) && this.end.isAfter( otherRange.start );\n\t}\n\n\t/**\n\t * Creates a range from given parents and offsets.\n\t *\n\t * @param {module:engine/view/element~Element} startElement Start position parent element.\n\t * @param {Number} startOffset Start position offset.\n\t * @param {module:engine/view/element~Element} endElement End position parent element.\n\t * @param {Number} endOffset End position offset.\n\t * @returns {module:engine/view/range~Range} Created range.\n\t */\n\tstatic createFromParentsAndOffsets( startElement, startOffset, endElement, endOffset ) {\n\t\treturn new this(\n\t\t\tnew Position( startElement, startOffset ),\n\t\t\tnew Position( endElement, endOffset )\n\t\t);\n\t}\n\n\t/**\n\t * Creates and returns a new instance of Range which is equal to passed range.\n\t *\n\t * @param {module:engine/view/range~Range} range Range to clone.\n\t * @returns {module:engine/view/range~Range}\n\t */\n\tstatic createFromRange( range ) {\n\t\treturn new this( range.start, range.end );\n\t}\n\n\t/**\n\t * Creates a new range, spreading from specified {@link module:engine/view/position~Position position} to a position moved by\n\t * given `shift`. If `shift` is a negative value, shifted position is treated as the beginning of the range.\n\t *\n\t * @param {module:engine/view/position~Position} position Beginning of the range.\n\t * @param {Number} shift How long the range should be.\n\t * @returns {module:engine/view/range~Range}\n\t */\n\tstatic createFromPositionAndShift( position, shift ) {\n\t\tconst start = position;\n\t\tconst end = position.getShiftedBy( shift );\n\n\t\treturn shift > 0 ? new this( start, end ) : new this( end, start );\n\t}\n\n\t/**\n\t * Creates a range inside an {@link module:engine/view/element~Element element} which starts before the first child of\n\t * that element and ends after the last child of that element.\n\t *\n\t * @param {module:engine/view/element~Element} element Element which is a parent for the range.\n\t * @returns {module:engine/view/range~Range}\n\t */\n\tstatic createIn( element ) {\n\t\treturn this.createFromParentsAndOffsets( element, 0, element, element.childCount );\n\t}\n\n\t/**\n\t * Creates a range that starts before given {@link module:engine/view/item~Item view item} and ends after it.\n\t *\n\t * @param {module:engine/view/item~Item} item\n\t * @returns {module:engine/view/range~Range}\n\t */\n\tstatic createOn( item ) {\n\t\treturn this.createFromPositionAndShift( Position.createBefore( item ), 1 );\n\t}\n}\n\n// Function used by getEnlagred and getShrinked methods.\nfunction enlargeShrinkSkip( value ) {\n\tif ( value.item.is( 'attributeElement' ) || value.item.is( 'uiElement' ) ) {\n\t\treturn true;\n\t}\n\n\treturn false;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/view/range.js\n// module id = 34\n// module chunks = 0","/**\n * The base implementation of `_.slice` without an iteratee call guard.\n *\n * @private\n * @param {Array} array The array to slice.\n * @param {number} [start=0] The start position.\n * @param {number} [end=array.length] The end position.\n * @returns {Array} Returns the slice of `array`.\n */\nfunction baseSlice(array, start, end) {\n  var index = -1,\n      length = array.length;\n\n  if (start < 0) {\n    start = -start > length ? 0 : (length + start);\n  }\n  end = end > length ? length : end;\n  if (end < 0) {\n    end += length;\n  }\n  length = start > end ? 0 : ((end - start) >>> 0);\n  start >>>= 0;\n\n  var result = Array(length);\n  while (++index < length) {\n    result[index] = array[index + start];\n  }\n  return result;\n}\n\nexport default baseSlice;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_baseSlice.js\n// module id = 35\n// module chunks = 0","/** Used as references for various `Number` constants. */\nvar MAX_SAFE_INTEGER = 9007199254740991;\n\n/** Used to detect unsigned integer values. */\nvar reIsUint = /^(?:0|[1-9]\\d*)$/;\n\n/**\n * Checks if `value` is a valid array-like index.\n *\n * @private\n * @param {*} value The value to check.\n * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.\n * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.\n */\nfunction isIndex(value, length) {\n  length = length == null ? MAX_SAFE_INTEGER : length;\n  return !!length &&\n    (typeof value == 'number' || reIsUint.test(value)) &&\n    (value > -1 && value % 1 == 0 && value < length);\n}\n\nexport default isIndex;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_isIndex.js\n// module id = 36\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/conversion/buildmodelconverter\n */\n\nimport {\n\tinsertElement,\n\tinsertUIElement,\n\tsetAttribute,\n\tremoveAttribute,\n\tremoveUIElement,\n\twrapItem,\n\tunwrapItem,\n\twrapRange,\n\tunwrapRange\n} from './model-to-view-converters';\n\nimport { convertSelectionAttribute, convertSelectionMarker } from './model-selection-to-view-converters';\n\nimport ViewAttributeElement from '../view/attributeelement';\nimport ViewContainerElement from '../view/containerelement';\nimport ViewUIElement from '../view/uielement';\n\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/**\n * Provides chainable, high-level API to easily build basic model-to-view converters that are appended to given\n * dispatchers. In many cases, this is the API that should be used to specify how abstract model elements and\n * attributes should be represented in the view (and then later in DOM). Instances of this class are created by\n * {@link module:engine/conversion/buildmodelconverter~buildModelConverter}.\n *\n * If you need more complex converters, see {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher},\n * {@link module:engine/conversion/model-to-view-converters}, {@link module:engine/conversion/modelconsumable~ModelConsumable},\n * {@link module:engine/conversion/mapper~Mapper}.\n *\n * Using this API it is possible to create four kinds of converters:\n *\n * 1. Model element to view element converter. This is a converter that takes the model element and represents it\n * in the view.\n *\n *\t\tbuildModelConverter().for( dispatcher ).fromElement( 'paragraph' ).toElement( 'p' );\n *\t\tbuildModelConverter().for( dispatcher ).fromElement( 'image' ).toElement( 'img' );\n *\n * 2. Model attribute to view attribute converter. This is a converter that operates on model element attributes\n * and converts them to view element attributes. It is suitable for elements like `image` (`src`, `title` attributes).\n *\n *\t\tbuildModelConverter().for( dispatcher ).fromElement( 'image' ).toElement( 'img' );\n *\t\tbuildModelConverter().for( dispatcher ).fromAttribute( 'src' ).toAttribute();\n *\n * 3. Model attribute to view element converter. This is a converter that takes model attributes and represents them\n * as view elements. Elements created by this kind of converter are wrapping other view elements. Wrapped view nodes\n * correspond to model nodes had converter attribute. It is suitable for attributes like `bold`, where `bold` attribute\n * set on model text nodes is converter to `strong` view element.\n *\n *\t\tbuildModelConverter().for( dispatcher ).fromAttribute( 'bold' ).toElement( 'strong' );\n *\n * 4. Model marker to view element converter. This is a converter that converts markers from given group to view attribute element.\n * Markers, basically, are {@link module:engine/model/liverange~LiveRange} instances, that are named. In this conversion, model range is\n * converted to view range, then that view range is wrapped (or unwrapped, if range is removed) in a view attribute element.\n * To learn more about markers, see {@link module:engine/model/markercollection~MarkerCollection}.\n *\n *\t\tconst viewSpanSearchResult = new ViewAttributeElement( 'span', { class: 'search-result' } );\n *\t\tbuildModelConverter().for( dispatcher ).fromMarker( 'searchResult' ).toElement( viewSpanSearchResult );\n *\n * It is possible to provide various different parameters for\n * {@link module:engine/conversion/buildmodelconverter~ModelConverterBuilder#toElement}\n * and {@link module:engine/conversion/buildmodelconverter~ModelConverterBuilder#toAttribute} methods.\n * See their descriptions to learn more.\n *\n * It is also possible to {@link module:engine/conversion/buildmodelconverter~ModelConverterBuilder#withPriority change default priority}\n * of created converters to decide which converter should be fired earlier and which later. This is useful if you have\n * a general converter but also want to provide different special-case converters (i.e. given model element is converted\n * always to given view element, but if it has given attribute it is converter to other view element). For this,\n * use {@link module:engine/conversion/buildmodelconverter~ModelConverterBuilder#withPriority withPriority} right after `from...` method.\n *\n * Note that `to...` methods are \"terminators\", which means that should be the last one used in building converter.\n *\n * You can use {@link module:engine/conversion/buildviewconverter~ViewConverterBuilder}\n * to create \"opposite\" converters - from view to model.\n */\nclass ModelConverterBuilder {\n\t/**\n\t * Creates `ModelConverterBuilder` with given `dispatchers` registered to it.\n\t */\n\tconstructor() {\n\t\t/**\n\t\t * Dispatchers to which converters will be attached.\n\t\t *\n\t\t * @type {Array.<module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher>}\n\t\t * @private\n\t\t */\n\t\tthis._dispatchers = [];\n\n\t\t/**\n\t\t * Contains data about registered \"from\" query.\n\t\t *\n\t\t * @type {Object}\n\t\t * @private\n\t\t */\n\t\tthis._from = null;\n\t}\n\n\t/**\n\t * Set one or more dispatchers which the built converter will be attached to.\n\t *\n\t * @chainable\n\t * @param {...module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher} dispatchers One or more dispatchers.\n\t * @returns {module:engine/conversion/buildmodelconverter~ModelConverterBuilder}\n\t */\n\tfor( ...dispatchers ) {\n\t\tthis._dispatchers = dispatchers;\n\n\t\treturn this;\n\t}\n\n\t/**\n\t * Registers what model element should be converted.\n\t *\n\t * @chainable\n\t * @param {String} elementName Name of element to convert.\n\t * @returns {module:engine/conversion/buildmodelconverter~ModelConverterBuilder}\n\t */\n\tfromElement( elementName ) {\n\t\tthis._from = {\n\t\t\ttype: 'element',\n\t\t\tname: elementName,\n\t\t\tpriority: null\n\t\t};\n\n\t\treturn this;\n\t}\n\n\t/**\n\t * Registers what model attribute should be converted.\n\t *\n\t * @chainable\n\t * @param {String} key Key of attribute to convert.\n\t * @returns {module:engine/conversion/buildmodelconverter~ModelConverterBuilder}\n\t */\n\tfromAttribute( key ) {\n\t\tthis._from = {\n\t\t\ttype: 'attribute',\n\t\t\tkey: key,\n\t\t\tpriority: null\n\t\t};\n\n\t\treturn this;\n\t}\n\n\t/**\n\t * Registers what type of marker should be converted.\n\t *\n\t * @chainable\n\t * @param {String} markerName Name of marker to convert.\n\t * @returns {module:engine/conversion/buildmodelconverter~ModelConverterBuilder}\n\t */\n\tfromMarker( markerName ) {\n\t\tthis._from = {\n\t\t\ttype: 'marker',\n\t\t\tname: markerName,\n\t\t\tpriority: null\n\t\t};\n\n\t\treturn this;\n\t}\n\n\t/**\n\t * Changes default priority for built converter. The lower the number, the earlier converter will be fired.\n\t * Default priority is `10`.\n\t *\n\t * **Note:** Keep in mind that event priority, that is set by this modifier, is used for attribute priority\n\t * when {@link module:engine/view/writer~writer} is used. This changes how view elements are ordered,\n\t * i.e.: `<strong><em>foo</em></strong>` vs `<em><strong>foo</strong></em>`. Using priority you can also\n\t * prevent node merging, i.e.: `<span class=\"bold\"><span class=\"theme\">foo</span><span>` vs `<span class=\"bold theme\">foo</span>`.\n\t * If you want to prevent merging, just set different priority for both converters.\n\t *\n\t *\t\tbuildModelConverter().for( dispatcher ).fromAttribute( 'bold' ).withPriority( 2 ).toElement( 'strong' );\n\t *\t\tbuildModelConverter().for( dispatcher ).fromAttribute( 'italic' ).withPriority( 3 ).toElement( 'em' );\n\t *\n\t * @chainable\n\t * @param {Number} priority Converter priority.\n\t * @returns {module:engine/conversion/buildmodelconverter~ModelConverterBuilder}\n\t */\n\twithPriority( priority ) {\n\t\tthis._from.priority = priority;\n\n\t\treturn this;\n\t}\n\n\t/**\n\t * Registers what view element will be created by converter.\n\t *\n\t * Method accepts various ways of providing how the view element will be created. You can pass view element name as\n\t * `string`, view element instance which will be cloned and used, or creator function which returns view element that\n\t * will be used. Keep in mind that when you view element instance or creator function, it has to be/return a\n\t * proper type of view element: {@link module:engine/view/containerelement~ContainerElement ViewContainerElement} if you convert\n\t * from element or {@link module:engine/view/attributeelement~AttributeElement ViewAttributeElement} if you convert from attribute.\n\t *\n\t *\t\tbuildModelConverter().for( dispatcher ).fromElement( 'paragraph' ).toElement( 'p' );\n\t *\n\t *\t\tbuildModelConverter().for( dispatcher ).fromElement( 'image' ).toElement( new ViewContainerElement( 'img' ) );\n\t *\n\t *\t\tbuildModelConverter().for( dispatcher )\n\t *\t\t\t.fromElement( 'header' )\n\t *\t\t\t.toElement( ( data ) => new ViewContainerElement( 'h' + data.item.getAttribute( 'level' ) ) );\n\t *\n\t *\t\tbuildModelConverter().for( dispatcher ).fromAttribute( 'bold' ).toElement( new ViewAttributeElement( 'strong' ) );\n\t *\n\t * Creator function will be passed different values depending whether conversion is from element or from attribute:\n\t *\n\t * * from element: dispatcher's\n\t * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:insert insert event}\n\t * parameters will be passed,\n\t * * from attribute: there is one parameter and it is attribute value.\n\t *\n\t * This method also registers model selection to view selection converter, if conversion is from attribute.\n\t *\n\t * This method creates the converter and adds it as a callback to a proper\n\t * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher conversion dispatcher} event.\n\t *\n\t * @param {String|module:engine/view/element~Element|Function} element Element created by converter or\n\t * a function that returns view element.\n\t */\n\ttoElement( element ) {\n\t\tconst priority = this._from.priority === null ? 'normal' : this._from.priority;\n\n\t\tfor ( let dispatcher of this._dispatchers ) {\n\t\t\tif ( this._from.type == 'element' ) {\n\t\t\t\t// From model element to view element -> insert element.\n\t\t\t\telement = typeof element == 'string' ? new ViewContainerElement( element ) : element;\n\n\t\t\t\tdispatcher.on( 'insert:' + this._from.name, insertElement( element ), { priority } );\n\t\t\t} else if ( this._from.type == 'attribute' ) {\n\t\t\t\t// From model attribute to view element -> wrap and unwrap.\n\t\t\t\telement = typeof element == 'string' ? new ViewAttributeElement( element ) : element;\n\n\t\t\t\tdispatcher.on( 'addAttribute:' + this._from.key, wrapItem( element ), { priority } );\n\t\t\t\tdispatcher.on( 'changeAttribute:' + this._from.key, wrapItem( element ), { priority } );\n\t\t\t\tdispatcher.on( 'removeAttribute:' + this._from.key, unwrapItem( element ), { priority } );\n\n\t\t\t\tdispatcher.on( 'selectionAttribute:' + this._from.key, convertSelectionAttribute( element ), { priority } );\n\t\t\t} else {\n\t\t\t\telement = typeof element == 'string' ? new ViewAttributeElement( element ) : element;\n\n\t\t\t\tdispatcher.on( 'addMarker:' + this._from.name, wrapRange( element ), { priority } );\n\t\t\t\tdispatcher.on( 'removeMarker:' + this._from.name, unwrapRange( element ), { priority } );\n\n\t\t\t\tdispatcher.on( 'selectionMarker:' + this._from.name, convertSelectionMarker( element ), { priority } );\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Registers what view stamp will be created by converter to mark marker range bounds. Separate elements will be\n\t * created at the beginning and at the end of the range. If range is collapsed then only one element will be created.\n\t *\n\t * Method accepts various ways of providing how the view element will be created. You can pass view element name as\n\t * `string`, view element instance which will be cloned and used, or creator function which returns view element that\n\t * will be used. Keep in mind that when you provide view element instance or creator function, it has to be/return a\n\t * proper type of view element: {@link module:engine/view/uielement~UIElement UIElement}.\n\t *\n\t *\t\tbuildModelConverter().for( dispatcher ).fromMarker( 'search' ).toStamp( 'span' );\n\t *\n\t *\t\tbuildModelConverter().for( dispatcher )\n\t *\t\t\t.fromMarker( 'search' )\n\t *\t\t\t.toStamp( new UIElement( 'span', { 'data-name': 'search' } ) );\n\t *\n\t *\t\tbuildModelConverter().for( dispatcher )\n\t *\t\t\t.fromMarker( 'search' )\n\t *\t\t\t.toStamp( ( data ) => new UIElement( 'span', { 'data-name': data.name ) );\n\t *\n\t * Creator function provides additional `data.isOpening` parameter which defined if currently converted element is\n\t * a beginning or end of the marker range. This makes possible to create different opening and closing stamp.\n\t *\n\t *\t\tbuildModelConverter().for( dispatcher )\n\t *\t\t\t.fromMarker( 'search' )\n\t *\t\t\t.toStamp( ( data ) => {\n\t *\t\t\t\tif ( data.isOpening ) {\n\t *\t\t\t\t\treturn new UIElement( 'span', { 'data-name': data.name, 'data-start': true ) );\n\t *\t\t\t\t}\n\t *\n\t *\t\t\t\treturn new UIElement( 'span', { 'data-name': data.name, 'data-end': true ) );\n\t *\t\t\t}\n\t *\n\t * Creator function provides\n\t * {@link module:engine/conversion/buildmodelconverter~ModelConverterBuilder#StampCreatorData} parameters.\n\t *\n\t * See how markers {module:engine/model/buildviewconverter~ViewConverterBuilder#toMarker view -> model serialization}\n\t * works to find out what view element format is the best for you.\n\t *\n\t * @param {String|module:engine/view/element~UIElement|Function} element UIElement created by converter or\n\t * a function that returns view element.\n\t */\n\ttoStamp( element ) {\n\t\tfor ( let dispatcher of this._dispatchers ) {\n\t\t\tif ( this._from.type != 'marker' ) {\n\t\t\t\t/**\n\t\t\t\t * To-stamp conversion is supported only for model markers.\n\t\t\t\t *\n\t\t\t\t * @error build-model-converter-element-to-stamp\n\t\t\t\t */\n\t\t\t\tthrow new CKEditorError(\n\t\t\t\t\t'build-model-converter-non-marker-to-stamp: To-stamp conversion is supported only from model markers.'\n\t\t\t\t);\n\t\t\t}\n\n\t\t\tconst priority = this._from.priority === null ? 'normal' : this._from.priority;\n\n\t\t\telement = typeof element == 'string' ? new ViewUIElement( element ) : element;\n\n\t\t\tdispatcher.on( 'addMarker:' + this._from.name, insertUIElement( element ), { priority } );\n\t\t\tdispatcher.on( 'removeMarker:' + this._from.name, removeUIElement( element ), { priority } );\n\t\t}\n\t}\n\n\t/**\n\t * Registers what view attribute will be created by converter. Keep in mind, that only model attribute to\n\t * view attribute conversion is supported.\n\t *\n\t * Method accepts various ways of providing how the view attribute will be created:\n\t *\n\t * * for no passed parameter, attribute key and value will be converted 1-to-1 to view attribute,\n\t * * if you pass one `string`, it will be used as new attribute key while attribute value will be copied,\n\t * * if you pass two `string`s, first one will be used as new attribute key and second one as new attribute value,\n\t * * if you pass a function, it is expected to return an object with `key` and `value` properties representing attribute key and value.\n\t * This function will be passed model attribute value and model attribute key as first two parameters and then\n\t * all dispatcher's\n\t * {module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:changeAttribute changeAttribute event}\n\t * parameters.\n\t *\n\t *\t\tbuildModelConverter().for( dispatcher ).fromAttribute( 'class' ).toAttribute( '' );\n\t *\n\t *\t\tbuildModelConverter().for( dispatcher ).fromAttribute( 'linkTitle' ).toAttribute( 'title' );\n\t *\n\t *\t\tbuildModelConverter().for( dispatcher ).fromAttribute( 'highlighted' ).toAttribute( 'style', 'background:yellow' );\n\t *\n\t *\t\tbuildModelConverter().for( dispatcher )\n\t *\t\t\t.fromAttribute( 'theme' )\n\t *\t\t\t.toAttribute( ( value ) => ( { key: 'class', value: value + '-theme' } ) );\n\t *\n\t * This method creates the converter and adds it as a callback to a proper\n\t * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher conversion dispatcher} event.\n\t *\n\t * @param {String|Function} [keyOrCreator] Attribute key or a creator function.\n\t * @param {*} [value] Attribute value.\n\t */\n\ttoAttribute( keyOrCreator, value ) {\n\t\tif ( this._from.type != 'attribute' ) {\n\t\t\t/**\n\t\t\t * To-attribute conversion is supported only for model attributes.\n\t\t\t *\n\t\t\t * @error build-model-converter-element-to-attribute\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'build-model-converter-non-attribute-to-attribute: ' +\n\t\t\t\t'To-attribute conversion is supported only from model attributes.' );\n\t\t}\n\n\t\tlet attributeCreator;\n\n\t\tif ( !keyOrCreator ) {\n\t\t\t// If `keyOrCreator` is not set, we assume default behavior which is 1:1 attribute re-write.\n\t\t\t// This is also a default behavior for `setAttribute` converter when no attribute creator is passed.\n\t\t\tattributeCreator = undefined;\n\t\t} else if ( typeof keyOrCreator == 'string' ) {\n\t\t\t// `keyOrCreator` is an attribute key.\n\n\t\t\tif ( value ) {\n\t\t\t\t// If value is set, create \"dumb\" creator that always returns the same object.\n\t\t\t\tattributeCreator = function() {\n\t\t\t\t\treturn { key: keyOrCreator, value: value };\n\t\t\t\t};\n\t\t\t} else {\n\t\t\t\t// If value is not set, take it from the passed parameter.\n\t\t\t\tattributeCreator = function( value ) {\n\t\t\t\t\treturn { key: keyOrCreator, value: value };\n\t\t\t\t};\n\t\t\t}\n\t\t} else {\n\t\t\t// `keyOrCreator` is an attribute creator function.\n\t\t\tattributeCreator = keyOrCreator;\n\t\t}\n\n\t\tfor ( let dispatcher of this._dispatchers ) {\n\t\t\tconst options = { priority: this._from.priority || 'normal' };\n\n\t\t\tdispatcher.on( 'addAttribute:' + this._from.key, setAttribute( attributeCreator ), options );\n\t\t\tdispatcher.on( 'changeAttribute:' + this._from.key, setAttribute( attributeCreator ), options );\n\t\t\tdispatcher.on( 'removeAttribute:' + this._from.key, removeAttribute( attributeCreator ), options );\n\t\t}\n\t}\n}\n\n/**\n * Entry point for model-to-view converters builder. This chainable API makes it easy to create basic, most common\n * model-to-view converters and attach them to provided dispatchers. The method returns an instance of\n * {@link module:engine/conversion/buildmodelconverter~ModelConverterBuilder}.\n */\nexport default function buildModelConverter() {\n\treturn new ModelConverterBuilder();\n}\n\n/**\n * @typedef {StampCreatorData} {module:engine/conversion/buildmodelconverter~ModelConverterBuilder#StampCreatorData}\n * @param {Object} data Additional information about the change.\n * @param {String} data.name Marker name.\n * @param {module:engine/model/range~Range} data.range Marker range.\n * @param {Boolean} data.isOpening Defines if currently converted element is a beginning or end of the marker range.\n * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n * @param {Object} conversionApi Conversion interface to be used by callback, passed in `ModelConversionDispatcher` constructor.\n */\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/conversion/buildmodelconverter.js\n// module id = 37\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/conversion/buildviewconverter\n */\n\nimport Matcher from '../view/matcher';\nimport ModelElement from '../model/element';\nimport ModelPosition from '../model/position';\nimport modelWriter from '../model/writer';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\nimport isIterable from '@ckeditor/ckeditor5-utils/src/isiterable';\n\n/**\n * Provides chainable, high-level API to easily build basic view-to-model converters that are appended to given\n * dispatchers. View-to-model converters are used when external data is added to the editor, i.e. when a user pastes\n * HTML content to the editor. Then, converters are used to translate this structure, possibly removing unknown/incorrect\n * nodes, and add it to the model. Also multiple, different elements might be translated into the same thing in the\n * model, i.e. `<b>` and `<strong>` elements might be converted to `bold` attribute (even though `bold` attribute will\n * be then converted only to `<strong>` tag). Instances of this class are created by\n * {@link module:engine/conversion/buildviewconverter~buildViewConverter}.\n *\n * If you need more complex converters, see {@link module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher},\n * {@link module:engine/conversion/view-to-model-converters}, {@link module:engine/conversion/viewconsumable~ViewConsumable}.\n *\n * Using this API it is possible to create various kind of converters:\n *\n * 1. View element to model element:\n *\n *\t\tbuildViewConverter().for( dispatcher ).fromElement( 'p' ).toElement( 'paragraph' );\n *\n * 2. View element to model attribute:\n *\n *\t\tbuildViewConverter().for( dispatcher ).fromElement( 'b' ).fromElement( 'strong' ).toAttribute( 'bold', 'true' );\n *\n * 3. View attribute to model attribute:\n *\n *\t\tbuildViewConverter().for( dispatcher ).fromAttribute( 'style', { 'font-weight': 'bold' } ).toAttribute( 'bold', 'true' );\n *\t\tbuildViewConverter().for( dispatcher )\n *\t\t\t.fromAttribute( 'class' )\n *\t\t\t.toAttribute( ( viewElement ) => ( { class: viewElement.getAttribute( 'class' ) } ) );\n *\n * 4. View elements and attributes to model attribute:\n *\n *\t\tbuildViewConverter().for( dispatcher )\n *\t\t\t.fromElement( 'b' ).fromElement( 'strong' ).fromAttribute( 'style', { 'font-weight': 'bold' } )\n *\t\t\t.toAttribute( 'bold', 'true' );\n *\n * 5. View {@link module:engine/view/matcher~Matcher view element matcher instance} or\n * {@link module:engine/view/matcher~Matcher#add matcher pattern}\n * to model element or attribute:\n *\n *\t\tconst matcher = new ViewMatcher();\n *\t\tmatcher.add( 'div', { class: 'quote' } );\n *\t\tbuildViewConverter().for( dispatcher ).from( matcher ).toElement( 'quote' );\n *\n *\t\tbuildViewConverter().for( dispatcher ).from( { name: 'span', class: 'bold' } ).toAttribute( 'bold', 'true' );\n *\n * Note, that converters built using `ViewConverterBuilder` automatically check {@link module:engine/model/schema~Schema schema}\n * if created model structure is valid. If given conversion would be invalid according to schema, it is ignored.\n *\n * It is possible to provide creator functions as parameters for {@link ~ViewConverterBuilder#toElement}\n * and {@link module:engine/conversion/buildviewconverter~ViewConverterBuilder#toAttribute} methods. See their descriptions to learn more.\n *\n * By default, converter will {@link module:engine/conversion/viewconsumable~ViewConsumable#consume consume} every value specified in\n * given `from...` query, i.e. `.from( { name: 'span', class: 'bold' } )` will make converter consume both `span` name\n * and `bold` class. It is possible to change this behavior using {@link ~ViewConverterBuilder#consuming consuming}\n * modifier. The modifier alters the last `fromXXX` query used before it. To learn more about consuming values,\n * see {@link module:engine/conversion/viewconsumable~ViewConsumable}.\n *\n * It is also possible to {@link module:engine/conversion/buildviewconverter~ViewConverterBuilder#withPriority change default priority}\n * of created converters to decide which converter should be fired earlier and which later. This is useful if you provide\n * a general converter but want to provide different converter for a specific-case (i.e. given view element is converted\n * always to given model element, but if it has given class it is converter to other model element). For this,\n * use {@link module:engine/conversion/buildviewconverter~ViewConverterBuilder#withPriority withPriority} modifier. The modifier alters\n * the last `from...` query used before it.\n *\n * Note that `to...` methods are \"terminators\", which means that should be the last one used in building converter.\n *\n * You can use {@link module:engine/conversion/buildmodelconverter~ModelConverterBuilder}\n * to create \"opposite\" converters - from model to view.\n */\nclass ViewConverterBuilder {\n\t/**\n\t * Creates `ViewConverterBuilder` with given `dispatchers` registered to it.\n\t */\n\tconstructor() {\n\t\t/**\n\t\t * Dispatchers to which converters will be attached.\n\t\t *\n\t\t * @type {Array.<module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher>}\n\t\t * @private\n\t\t */\n\t\tthis._dispatchers = [];\n\n\t\t/**\n\t\t * Stores \"from\" queries.\n\t\t *\n\t\t * @type {Array}\n\t\t * @private\n\t\t */\n\t\tthis._from = [];\n\t}\n\n\t/**\n\t * Set one or more dispatchers which the built converter will be attached to.\n\t *\n\t * @chainable\n\t * @param {...module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher} dispatchers One or more dispatchers.\n\t * @returns {module:engine/conversion/buildviewconverter~ViewConverterBuilder}\n\t */\n\tfor( ...dispatchers ) {\n\t\tthis._dispatchers = dispatchers;\n\n\t\treturn this;\n\t}\n\n\t/**\n\t * Registers what view element should be converted.\n\t *\n\t *\t\tbuildViewConverter().for( dispatcher ).fromElement( 'p' ).toElement( 'paragraph' );\n\t *\n\t * @chainable\n\t * @param {String} elementName View element name.\n\t * @returns {module:engine/conversion/buildviewconverter~ViewConverterBuilder}\n\t */\n\tfromElement( elementName ) {\n\t\treturn this.from( { name: elementName } );\n\t}\n\n\t/**\n\t * Registers what view attribute should be converted.\n\t *\n\t *\t\tbuildViewConverter().for( dispatcher ).fromAttribute( 'style', { 'font-weight': 'bold' } ).toAttribute( 'bold', 'true' );\n\t *\n\t * @chainable\n\t * @param {String|RegExp} key View attribute key.\n\t * @param {String|RegExp} [value] View attribute value.\n\t * @returns {module:engine/conversion/buildviewconverter~ViewConverterBuilder}\n\t */\n\tfromAttribute( key, value = /.*/ ) {\n\t\tlet pattern = {};\n\t\tpattern[ key ] = value;\n\n\t\treturn this.from( pattern );\n\t}\n\n\t/**\n\t * Registers what view pattern should be converted. The method accepts either {@link module:engine/view/matcher~Matcher view matcher}\n\t * or view matcher pattern.\n\t *\n\t *\t\tconst matcher = new ViewMatcher();\n\t *\t\tmatcher.add( 'div', { class: 'quote' } );\n\t *\t\tbuildViewConverter().for( dispatcher ).from( matcher ).toElement( 'quote' );\n\t *\n\t *\t\tbuildViewConverter().for( dispatcher ).from( { name: 'span', class: 'bold' } ).toAttribute( 'bold', 'true' );\n\t *\n\t * @chainable\n\t * @param {Object|module:engine/view/matcher~Matcher} matcher View matcher or view matcher pattern.\n\t * @returns {module:engine/conversion/buildviewconverter~ViewConverterBuilder}\n\t */\n\tfrom( matcher ) {\n\t\tif ( !( matcher instanceof Matcher ) ) {\n\t\t\tmatcher = new Matcher( matcher );\n\t\t}\n\n\t\tthis._from.push( {\n\t\t\tmatcher: matcher,\n\t\t\tconsume: false,\n\t\t\tpriority: null\n\t\t} );\n\n\t\treturn this;\n\t}\n\n\t/**\n\t * Modifies which consumable values will be {@link module:engine/conversion/viewconsumable~ViewConsumable#consume consumed}\n\t * by built converter.\n\t * It modifies the last `from...` query. Can be used after each `from...` query in given chain. Useful for providing\n\t * more specific matches.\n\t *\n\t *\t\t// This converter will only handle class bold conversion (to proper attribute) but span element\n\t *\t\t// conversion will have to be done in separate converter.\n\t *\t\t// Without consuming modifier, the converter would consume both class and name, so a converter for\n\t *\t\t// span element would not be fired.\n\t *\t\tbuildViewConverter().for( dispatcher )\n\t *\t\t\t.from( { name: 'span', class: 'bold' } ).consuming( { class: 'bold' } )\n\t *\t\t\t.toAttribute( 'bold', 'true' } );\n\t *\n\t *\t\tbuildViewConverter().for( dispatcher )\n\t *\t\t\t.fromElement( 'img' ).consuming( { name: true, attributes: [ 'src', 'title' ] } )\n\t *\t\t\t.toElement( ( viewElement ) => new ModelElement( 'image', { src: viewElement.getAttribute( 'src' ),\n\t *\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\ttitle: viewElement.getAttribute( 'title' ) } );\n\t *\n\t * **Note:** All and only values from passed object has to be consumable on converted view element. This means that\n\t * using `consuming` method, you can either make looser conversion conditions (like in first example) or tighter\n\t * conversion conditions (like in second example). So, the view element, to be converter, has to match query of\n\t * `from...` method and then have to have enough consumable values to consume.\n\t *\n\t * @see module:engine/conversion/viewconsumable~ViewConsumable\n\t * @chainable\n\t * @param {Object} consume Values to consume.\n\t * @returns {module:engine/conversion/buildviewconverter~ViewConverterBuilder}\n\t */\n\tconsuming( consume ) {\n\t\tlet lastFrom = this._from[ this._from.length - 1 ];\n\t\tlastFrom.consume = consume;\n\n\t\treturn this;\n\t}\n\n\t/**\n\t * Changes default priority for built converter. It modifies the last `from...` query. Can be used after each\n\t * `from...` query in given chain. Useful for overwriting converters. The lower the number, the earlier converter will be fired.\n\t *\n\t *\t\tbuildViewConverter().for( dispatcher ).fromElement( 'p' ).toElement( 'paragraph' );\n\t *\t\t// Register converter with proper priority, otherwise \"p\" element would get consumed by first\n\t *\t\t// converter and the second converter would not be fired.\n\t *\t\tbuildViewConverter().for( dispatcher )\n\t *\t\t\t.from( { name: 'p', class: 'custom' } ).withPriority( 9 )\n\t *\t\t\t.toElement( 'customParagraph' );\n\t *\n\t * **Note:** `ViewConverterBuilder` takes care so all `toElement` conversions takes place before all `toAttribute`\n\t * conversions. This is done by setting default `toElement` priority to `10` and `toAttribute` priority to `1000`.\n\t * It is recommended to set converter priority for `toElement` conversions below `500` and `toAttribute` priority\n\t * above `500`. It is important that model elements are created before attributes, otherwise attributes would\n\t * not be applied or other errors may occur.\n\t *\n\t * @chainable\n\t * @param {Number} priority Converter priority.\n\t * @returns {module:engine/conversion/buildviewconverter~ViewConverterBuilder}\n\t */\n\twithPriority( priority ) {\n\t\tlet lastFrom = this._from[ this._from.length - 1 ];\n\t\tlastFrom.priority = priority;\n\n\t\treturn this;\n\t}\n\n\t/**\n\t * Registers what model element will be created by converter.\n\t *\n\t * Method accepts two ways of providing what kind of model element will be created. You can pass model element\n\t * name as a `string` or a function that will return model element instance. If you provide creator function,\n\t * it will be passed converted view element as first and only parameter.\n\t *\n\t *\t\tbuildViewConverter().for( dispatcher ).fromElement( 'p' ).toElement( 'paragraph' );\n\t *\t\tbuildViewConverter().for( dispatcher )\n\t *\t\t\t.fromElement( 'img' )\n\t *\t\t\t.toElement( ( viewElement ) => new ModelElement( 'image', { src: viewElement.getAttribute( 'src' ) } );\n\t *\n\t * @param {String|Function} element Model element name or model element creator function.\n\t */\n\ttoElement( element ) {\n\t\tfunction eventCallbackGen( from ) {\n\t\t\treturn ( evt, data, consumable, conversionApi ) => {\n\t\t\t\t// There is one callback for all patterns in the matcher.\n\t\t\t\t// This will be usually just one pattern but we support matchers with many patterns too.\n\t\t\t\tlet matchAll = from.matcher.matchAll( data.input );\n\n\t\t\t\t// If there is no match, this callback should not do anything.\n\t\t\t\tif ( !matchAll ) {\n\t\t\t\t\treturn;\n\t\t\t\t}\n\n\t\t\t\t// Now, for every match between matcher and actual element, we will try to consume the match.\n\t\t\t\tfor ( let match of matchAll ) {\n\t\t\t\t\t// Create model element basing on creator function or element name.\n\t\t\t\t\tconst modelElement = element instanceof Function ? element( data.input ) : new ModelElement( element );\n\n\t\t\t\t\t// Check whether generated structure is okay with `Schema`.\n\t\t\t\t\tconst keys = Array.from( modelElement.getAttributeKeys() );\n\n\t\t\t\t\tif ( !conversionApi.schema.check( { name: modelElement.name, attributes: keys, inside: data.context } ) ) {\n\t\t\t\t\t\tcontinue;\n\t\t\t\t\t}\n\n\t\t\t\t\t// Try to consume appropriate values from consumable values list.\n\t\t\t\t\tif ( !consumable.consume( data.input, from.consume || match.match ) ) {\n\t\t\t\t\t\tcontinue;\n\t\t\t\t\t}\n\n\t\t\t\t\t// If everything is fine, we are ready to start the conversion.\n\t\t\t\t\t// Add newly created `modelElement` to the parents stack.\n\t\t\t\t\tdata.context.push( modelElement );\n\n\t\t\t\t\t// Convert children of converted view element and append them to `modelElement`.\n\t\t\t\t\tconst modelChildren = conversionApi.convertChildren( data.input, consumable, data );\n\t\t\t\t\tconst insertPosition = ModelPosition.createAt( modelElement, 'end' );\n\t\t\t\t\tmodelWriter.insert( insertPosition, modelChildren );\n\n\t\t\t\t\t// Remove created `modelElement` from the parents stack.\n\t\t\t\t\tdata.context.pop();\n\n\t\t\t\t\t// Add `modelElement` as a result.\n\t\t\t\t\tdata.output = modelElement;\n\n\t\t\t\t\t// Prevent multiple conversion if there are other correct matches.\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t};\n\t\t}\n\n\t\tthis._setCallback( eventCallbackGen, 'normal' );\n\t}\n\n\t/**\n\t * Registers what model attribute will be created by converter.\n\t *\n\t * Method accepts two ways of providing what kind of model attribute will be created. You can either pass two strings\n\t * representing attribute key and attribute value or a function that returns an object with `key` and `value` properties.\n\t * If you provide creator function, it will be passed converted view element as first and only parameter.\n\t *\n\t *\t\tbuildViewConverter().for( dispatcher ).fromAttribute( 'style', { 'font-weight': 'bold' } ).toAttribute( 'bold', 'true' );\n\t *\t\tbuildViewConverter().for( dispatcher )\n\t *\t\t\t.fromAttribute( 'class' )\n\t *\t\t\t.toAttribute( ( viewElement ) => ( { key: 'class', value: viewElement.getAttribute( 'class' ) } ) );\n\t *\n\t * @param {String|Function} keyOrCreator Attribute key or a creator function.\n\t * @param {String} [value] Attribute value. Required if `keyOrCreator` is a `string`. Ignored otherwise.\n\t */\n\ttoAttribute( keyOrCreator, value ) {\n\t\tfunction eventCallbackGen( from ) {\n\t\t\treturn ( evt, data, consumable, conversionApi ) => {\n\t\t\t\t// There is one callback for all patterns in the matcher.\n\t\t\t\t// This will be usually just one pattern but we support matchers with many patterns too.\n\t\t\t\tlet matchAll = from.matcher.matchAll( data.input );\n\n\t\t\t\t// If there is no match, this callback should not do anything.\n\t\t\t\tif ( !matchAll ) {\n\t\t\t\t\treturn;\n\t\t\t\t}\n\n\t\t\t\t// Now, for every match between matcher and actual element, we will try to consume the match.\n\t\t\t\tfor ( let match of matchAll ) {\n\t\t\t\t\t// Try to consume appropriate values from consumable values list.\n\t\t\t\t\tif ( !consumable.consume( data.input, from.consume || match.match ) ) {\n\t\t\t\t\t\tcontinue;\n\t\t\t\t\t}\n\n\t\t\t\t\t// Since we are converting to attribute we need an output on which we will set the attribute.\n\t\t\t\t\t// If the output is not created yet, we will create it.\n\t\t\t\t\tif ( !data.output ) {\n\t\t\t\t\t\tdata.output = conversionApi.convertChildren( data.input, consumable, data );\n\t\t\t\t\t}\n\n\t\t\t\t\t// Use attribute creator function, if provided.\n\t\t\t\t\tlet attribute = keyOrCreator instanceof Function ? keyOrCreator( data.input ) : { key: keyOrCreator, value: value };\n\n\t\t\t\t\t// Set attribute on current `output`. `Schema` is checked inside this helper function.\n\t\t\t\t\tsetAttributeOn( data.output, attribute, data, conversionApi );\n\n\t\t\t\t\t// Prevent multiple conversion if there are other correct matches.\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t};\n\t\t}\n\n\t\tthis._setCallback( eventCallbackGen, 'low' );\n\t}\n\n\t/**\n\t * Registers how model element marking marker range will be created by converter.\n\t *\n\t * Created element has to match the following pattern:\n\t *\n\t * \t\t{ name: '$marker', attribute: { data-name: /^\\w/ } }\n\t *\n\t * There are two ways of creating this element:\n\t *\n\t * 1. Makes sure that converted view element will have property `data-name` then converter will\n\t * automatically take this property value. In this case there is no need to provide creator function.\n\t * For the following view:\n\t *\n\t *\t\t<marker data-name=\"search\"></marker>foo<marker data-name=\"search\"></marker>\n\t *\n\t * converter should look like this:\n\t *\n\t *\t\tbuildViewConverter().for( dispatcher ).fromElement( 'marker' ).toMarker();\n\t *\n\t * 2. Creates element by creator:\n\t *\n\t * For the following view:\n\t *\n\t * \t\t<span foo=\"search\"></span>foo<span foo=\"search\"></span>\n\t *\n\t * converter should look like this:\n\t *\n\t * \t\tbuildViewConverter().for( dispatcher ).from( { name: 'span', { attribute: foo: /^\\w/ } } ).toMarker( ( data ) => {\n\t * \t\t\treturn new Element( '$marker', { 'data-name': data.getAttribute( 'foo' ) } );\n\t * \t\t} );\n\t *\n\t * @param {Function} [creator] Creator function.\n\t */\n\ttoMarker( creator ) {\n\t\tfunction eventCallbackGen( from ) {\n\t\t\treturn ( evt, data, consumable ) => {\n\t\t\t\t// There is one callback for all patterns in the matcher.\n\t\t\t\t// This will be usually just one pattern but we support matchers with many patterns too.\n\t\t\t\tconst matchAll = from.matcher.matchAll( data.input );\n\n\t\t\t\t// If there is no match, this callback should not do anything.\n\t\t\t\tif ( !matchAll ) {\n\t\t\t\t\treturn;\n\t\t\t\t}\n\n\t\t\t\tlet modelElement;\n\n\t\t\t\t// When creator is provided then create model element basing on creator function.\n\t\t\t\tif ( creator instanceof Function ) {\n\t\t\t\t\tmodelElement = creator( data.input );\n\t\t\t\t// When there is no creator then create model element basing on data from view element.\n\t\t\t\t} else {\n\t\t\t\t\tmodelElement = new ModelElement( '$marker', { 'data-name': data.input.getAttribute( 'data-name' ) } );\n\t\t\t\t}\n\n\t\t\t\t// Check if model element is correct (has proper name and property).\n\t\t\t\tif ( modelElement.name != '$marker' || typeof modelElement.getAttribute( 'data-name' ) != 'string' ) {\n\t\t\t\t\tthrow new CKEditorError(\n\t\t\t\t\t\t'build-view-converter-invalid-marker: Invalid model element to mark marker range.'\n\t\t\t\t\t);\n\t\t\t\t}\n\n\t\t\t\t// Now, for every match between matcher and actual element, we will try to consume the match.\n\t\t\t\tfor ( const match of matchAll ) {\n\t\t\t\t\t// Try to consume appropriate values from consumable values list.\n\t\t\t\t\tif ( !consumable.consume( data.input, from.consume || match.match ) ) {\n\t\t\t\t\t\tcontinue;\n\t\t\t\t\t}\n\n\t\t\t\t\tdata.output = modelElement;\n\n\t\t\t\t\t// Prevent multiple conversion if there are other correct matches.\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t};\n\t\t}\n\n\t\tthis._setCallback( eventCallbackGen, 'normal' );\n\t}\n\n\t/**\n\t * Helper function that uses given callback generator to created callback function and sets it on registered dispatchers.\n\t *\n\t * @param eventCallbackGen\n\t * @param defaultPriority\n\t * @private\n\t */\n\t_setCallback( eventCallbackGen, defaultPriority ) {\n\t\t// We will add separate event callback for each registered `from` entry.\n\t\tfor ( let from of this._from ) {\n\t\t\t// We have to figure out event name basing on matcher's patterns.\n\t\t\t// If there is exactly one pattern and it has `name` property we will used that name.\n\t\t\tconst matcherElementName = from.matcher.getElementName();\n\t\t\tconst eventName = matcherElementName ? 'element:' + matcherElementName : 'element';\n\t\t\tconst eventCallback = eventCallbackGen( from );\n\n\t\t\tconst priority = from.priority === null ? defaultPriority : from.priority;\n\n\t\t\t// Add event to each registered dispatcher.\n\t\t\tfor ( let dispatcher of this._dispatchers ) {\n\t\t\t\tdispatcher.on( eventName, eventCallback, { priority } );\n\t\t\t}\n\t\t}\n\t}\n}\n\n// Helper function that sets given attributes on given `module:engine/model/node~Node` or\n// `module:engine/model/documentfragment~DocumentFragment`.\nfunction setAttributeOn( toChange, attribute, data, conversionApi ) {\n\tif ( isIterable( toChange ) ) {\n\t\tfor ( let node of toChange ) {\n\t\t\tsetAttributeOn( node, attribute, data, conversionApi );\n\t\t}\n\n\t\treturn;\n\t}\n\n\tconst keys = Array.from( toChange.getAttributeKeys() );\n\tkeys.push( attribute.key );\n\n\tconst schemaQuery = {\n\t\tname: toChange.name || '$text',\n\t\tattributes: keys,\n\t\tinside: data.context\n\t};\n\n\tif ( conversionApi.schema.check( schemaQuery ) ) {\n\t\ttoChange.setAttribute( attribute.key, attribute.value );\n\t}\n}\n\n/**\n * Entry point for view-to-model converters builder. This chainable API makes it easy to create basic, most common\n * view-to-model converters and attach them to provided dispatchers. The method returns an instance of\n * {@link module:engine/conversion/buildviewconverter~ViewConverterBuilder}.\n */\nexport default function buildViewConverter() {\n\treturn new ViewConverterBuilder();\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/conversion/buildviewconverter.js\n// module id = 38\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/operation/insertoperation\n */\n\nimport Operation from './operation';\nimport Position from '../position';\nimport NodeList from '../nodelist';\nimport RemoveOperation from './removeoperation';\nimport writer from './../writer';\nimport { normalizeNodes } from './../writer';\nimport Text from '../text';\nimport Element from '../element';\n\n/**\n * Operation to insert one or more nodes at given position in the model.\n *\n * @extends module:engine/model/operation/operation~Operation\n */\nexport default class InsertOperation extends Operation {\n\t/**\n\t * Creates an insert operation.\n\t *\n\t * @param {module:engine/model/position~Position} position Position of insertion.\n\t * @param {module:engine/model/node~NodeSet} nodes The list of nodes to be inserted.\n\t * @param {Number} baseVersion {@link module:engine/model/document~Document#version} on which operation can be applied.\n\t */\n\tconstructor( position, nodes, baseVersion ) {\n\t\tsuper( baseVersion );\n\n\t\t/**\n\t\t * Position of insertion.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/model/position~Position} module:engine/model/operation/insertoperation~InsertOperation#position\n\t\t */\n\t\tthis.position = Position.createFromPosition( position );\n\n\t\t/**\n\t\t * List of nodes to insert.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/model/nodelist~NodeList} module:engine/model/operation/insertoperation~InsertOperation#nodeList\n\t\t */\n\t\tthis.nodes = new NodeList( normalizeNodes( nodes ) );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tget type() {\n\t\treturn 'insert';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t * @returns {module:engine/model/operation/insertoperation~InsertOperation}\n\t */\n\tclone() {\n\t\tconst nodes = new NodeList( [ ...this.nodes ].map( ( node ) => node.clone( true ) ) );\n\n\t\treturn new InsertOperation( this.position, nodes, this.baseVersion );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t * @returns {module:engine/model/operation/removeoperation~RemoveOperation}\n\t */\n\tgetReversed() {\n\t\treturn new RemoveOperation( this.position, this.nodes.maxOffset, this.baseVersion + 1 );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\t_execute() {\n\t\t// What happens here is that we want original nodes be passed to writer because we want original nodes\n\t\t// to be inserted to the model. But in InsertOperation, we want to keep those nodes as they were added\n\t\t// to the operation, not modified. For example, text nodes can get merged or cropped while Elements can\n\t\t// get children. It is important that InsertOperation has the copy of original nodes in intact state.\n\t\tconst originalNodes = this.nodes;\n\t\tthis.nodes = new NodeList( [ ...originalNodes ].map( ( node ) => node.clone( true ) ) );\n\n\t\tconst range = writer.insert( this.position, originalNodes );\n\n\t\treturn { range };\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.operation.InsertOperation';\n\t}\n\n\t/**\n\t * Creates `InsertOperation` object from deserilized object, i.e. from parsed JSON string.\n\t *\n\t * @param {Object} json Deserialized JSON object.\n\t * @param {module:engine/model/document~Document} document Document on which this operation will be applied.\n\t * @returns {module:engine/model/operation/insertoperation~InsertOperation}\n\t */\n\tstatic fromJSON( json, document ) {\n\t\tlet children = [];\n\n\t\tfor ( let child of json.nodes ) {\n\t\t\tif ( child.name ) {\n\t\t\t\t// If child has name property, it is an Element.\n\t\t\t\tchildren.push( Element.fromJSON( child ) );\n\t\t\t} else {\n\t\t\t\t// Otherwise, it is a Text node.\n\t\t\t\tchildren.push( Text.fromJSON( child ) );\n\t\t\t}\n\t\t}\n\n\t\treturn new InsertOperation( Position.fromJSON( json.position, document ), children, json.baseVersion );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/operation/insertoperation.js\n// module id = 39\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/operation/removeoperation\n */\n\nimport MoveOperation from './moveoperation';\nimport Position from '../position';\nimport Element from '../element';\nimport ReinsertOperation from './reinsertoperation';\n\n/**\n * Operation to remove a range of nodes.\n */\nexport default class RemoveOperation extends MoveOperation {\n\t/**\n\t * Creates a remove operation.\n\t *\n\t * @param {module:engine/model/position~Position} position Position before the first {@link module:engine/model/item~Item model item} to\n\t * remove.\n\t * @param {Number} howMany Offset size of removed range. {@link module:engine/model/item~Item Model items} will be removed starting\n\t * from `sourcePosition`, up to a `sourcePosition` with offset shifted by `howMany`.\n\t * @param {Number} baseVersion {@link module:engine/model/document~Document#version} on which operation can be applied.\n\t */\n\tconstructor( position, howMany, baseVersion ) {\n\t\tconst graveyard = position.root.document.graveyard;\n\t\tconst graveyardPosition = new Position( graveyard, [ graveyard.maxOffset, 0 ] );\n\n\t\tsuper( position, howMany, graveyardPosition, baseVersion );\n\n\t\t/**\n\t\t * Flag informing whether this operation should insert \"holder\" element (`true`) or should move removed nodes\n\t\t * into existing \"holder\" element (`false`).\n\t\t *\n\t\t * The flag should be set to `true` for each \"new\" `RemoveOperation` that is each `RemoveOperation` originally\n\t\t * created to remove some nodes from document (most likely created through `Batch` API).\n\t\t *\n\t\t * The flag should be set to `false` for each `RemoveOperation` that got created by splitting the original\n\t\t * `RemoveOperation`, for example during operational transformation.\n\t\t *\n\t\t * The flag should be set to `false` whenever removing nodes that were re-inserted from graveyard. This will\n\t\t * ensure correctness of all other operations that might change something on those nodes. This will also ensure\n\t\t * that redundant empty graveyard holder elements are not created.\n\t\t *\n\t\t * @protected\n\t\t * @type {Boolean}\n\t\t */\n\t\tthis._needsHolderElement = true;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tget type() {\n\t\treturn 'remove';\n\t}\n\n\t/**\n\t * Offset of the graveyard \"holder\" element, in which nodes removed by this operation are stored.\n\t *\n\t * @protected\n\t * @type {Number}\n\t */\n\tget _holderElementOffset() {\n\t\treturn this.targetPosition.path[ 0 ];\n\t}\n\n\t/**\n\t * Sets {@link module:engine/model/operation/removeoperation~RemoveOperation#_holderElementOffset}.\n\t *\n\t * @protected\n\t * @param {Number} offset\n\t */\n\tset _holderElementOffset( offset ) {\n\t\tthis.targetPosition.path[ 0 ] = offset;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t * @returns {module:engine/model/operation/reinsertoperation~ReinsertOperation}\n\t */\n\tgetReversed() {\n\t\treturn new ReinsertOperation( this.targetPosition, this.howMany, this.sourcePosition, this.baseVersion + 1 );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t * @returns {module:engine/model/operation/removeoperation~RemoveOperation}\n\t */\n\tclone() {\n\t\tlet removeOperation = new RemoveOperation( this.sourcePosition, this.howMany, this.baseVersion );\n\t\tremoveOperation.targetPosition = Position.createFromPosition( this.targetPosition );\n\n\t\treturn removeOperation;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\t_execute() {\n\t\t// Insert \"holder\" element in graveyard root, if the operation needs it.\n\t\tif ( this._needsHolderElement ) {\n\t\t\tconst graveyard = this.targetPosition.root;\n\t\t\tconst holderElement = new Element( '$graveyardHolder' );\n\n\t\t\tgraveyard.insertChildren( this._holderElementOffset, holderElement );\n\n\t\t\t// If the operation removes nodes that are already in graveyard, it may happen that\n\t\t\t// the operation's source position is invalidated by inserting new holder element into the graveyard.\n\t\t\t// If that's the case, we need to fix source position path.\n\t\t\tif ( this.sourcePosition.root == graveyard && this.sourcePosition.path[ 0 ] >= this._holderElementOffset ) {\n\t\t\t\tthis.sourcePosition.path[ 0 ]++;\n\t\t\t}\n\t\t}\n\n\t\t// Then, execute as a move operation.\n\t\treturn super._execute();\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.operation.RemoveOperation';\n\t}\n\n\t/**\n\t * Creates `RemoveOperation` object from deserilized object, i.e. from parsed JSON string.\n\t *\n\t * @param {Object} json Deserialized JSON object.\n\t * @param {module:engine/model/document~Document} document Document on which this operation will be applied.\n\t * @returns {module:engine/model/operation/removeoperation~RemoveOperation}\n\t */\n\tstatic fromJSON( json, document ) {\n\t\tlet sourcePosition = Position.fromJSON( json.sourcePosition, document );\n\n\t\tconst removeOp = new RemoveOperation( sourcePosition, json.howMany, json.baseVersion );\n\n\t\tremoveOp.targetPosition = Position.fromJSON( json.targetPosition, document );\n\t\tremoveOp._needsHolderElement = json._needsHolderElement;\n\n\t\treturn removeOp;\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/operation/removeoperation.js\n// module id = 40\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/containerelement\n */\n\nimport Element from './element';\n\n/**\n * Containers are elements which define document structure. They define boundaries for\n * {@link module:engine/view/attributeelement~AttributeElement attributes}. They are mostly use for block elements like `<p>` or `<div>`.\n *\n * Editing engine does not define fixed HTML DTD. This is why the type of the {@link module:engine/view/element~Element} need to\n * be defined by the feature developer.\n *\n * Creating an element you should use `ContainerElement` class or {@link module:engine/view/attributeelement~AttributeElement}. This is\n * important to define the type of the element because of two reasons:\n *\n * Firstly, {@link module:engine/view/domconverter~DomConverter} needs the information what is an editable block to convert elements to\n * DOM properly. {@link module:engine/view/domconverter~DomConverter} will ensure that `ContainerElement` is editable and it is possible\n * to put caret inside it, even if the container is empty.\n *\n * Secondly, {@link module:engine/view/writer~writer view writer} uses this information.\n * Nodes {@link module:engine/view/writer~writer.breakAttributes breaking} and {@link module:engine/view/writer~writer.mergeAttributes\n * merging}\n * is performed only in a bounds of a container nodes.\n *\n * For instance if `<p>` is an container and `<b>` is attribute:\n *\n *\t\t<p><b>fo^o</b></p>\n *\n * {@link module:engine/view/writer~writer.breakAttributes breakAttributes} will create:\n *\n *\t\t<p><b>fo</b><b>o</b></p>\n *\n * There might be a need to mark `<span>` element as a container node, for example in situation when it will be a\n * container of an inline widget:\n *\n *\t\t<span color=\"red\">foobar</span>\t\t// attribute\n *\t\t<span data-widget>foobar</span>\t\t// container\n *\n * @extends module:engine/view/element~Element\n */\nexport default class ContainerElement extends Element {\n\t/**\n\t * Creates a container element.\n\t *\n\t * @see module:engine/view/element~Element\n\t */\n\tconstructor( name, attrs, children ) {\n\t\tsuper( name, attrs, children );\n\n\t\t/**\n\t\t * Returns block {@link module:engine/view/filler filler} offset or `null` if block filler is not needed.\n\t\t *\n\t\t * @method #getFillerOffset\n\t\t * @returns {Number|null} Block filler offset or `null` if block filler is not needed.\n\t\t */\n\t\tthis.getFillerOffset = getFillerOffset;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tis( type, name = null ) {\n\t\tif ( !name ) {\n\t\t\treturn type == 'containerElement' || super.is( type );\n\t\t} else {\n\t\t\treturn ( type == 'containerElement' && name == this.name ) || super.is( type, name );\n\t\t}\n\t}\n}\n\n// Returns block {@link module:engine/view/filler filler} offset or `null` if block filler is not needed.\n//\n// @returns {Number|null} Block filler offset or `null` if block filler is not needed.\nfunction getFillerOffset() {\n\t/*jshint validthis:true */\n\treturn this.childCount === 0 ? 0 : null;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/view/containerelement.js\n// module id = 41\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module image/image/utils\n */\n\nimport { toWidget, isWidget } from '@ckeditor/ckeditor5-widget/src/utils';\nimport ModelElement from '@ckeditor/ckeditor5-engine/src/model/element';\n\nconst imageSymbol = Symbol( 'isImage' );\n\n/**\n * Converts given {@link module:engine/view/element~Element} to image widget:\n * * adds {@link module:engine/view/element~Element#setCustomProperty custom property} allowing to recognize image widget element,\n * * calls {@link module:widget/utils~toWidget toWidget} function with proper element's label creator.\n *\n * @param {module:engine/view/element~Element} viewElement\n * @param {String} label Element's label. It will be concatenated with image's `alt` attribute if one is present.\n * @returns {module:engine/view/element~Element}\n */\nexport function toImageWidget( viewElement, label ) {\n\tviewElement.setCustomProperty( imageSymbol, true );\n\n\treturn toWidget( viewElement, { label: labelCreator } );\n\n\tfunction labelCreator() {\n\t\tconst imgElement = viewElement.getChild( 0 );\n\t\tconst altText = imgElement.getAttribute( 'alt' );\n\n\t\treturn altText ? `${ altText } ${ label }` : label;\n\t}\n}\n\n/**\n * Checks if given view element is an image widget.\n *\n * @param {module:engine/view/element~Element} viewElement\n * @returns {Boolean}\n */\nexport function isImageWidget( viewElement ) {\n\treturn !!viewElement.getCustomProperty( imageSymbol ) && isWidget( viewElement );\n}\n\n/**\n * Checks if provided modelElement is an instance of {@link module:engine/model/element~Element Element} and its name\n * is `image`.\n *\n * @param {module:engine/model/element~Element} modelElement\n * @returns {Boolean}\n */\nexport function isImage( modelElement ) {\n\treturn modelElement instanceof ModelElement && modelElement.name == 'image';\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-image/src/image/utils.js\n// module id = 42\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/isiterable\n */\n\n/**\n * Checks if value implements iterator interface.\n *\n * @param {*} value The value to check.\n * @returns {Boolean} True if value implements iterator interface.\n */\nexport default function isIterable( value ) {\n\treturn !!( value && value[ Symbol.iterator ] );\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/isiterable.js\n// module id = 43\n// module chunks = 0","import SetCache from './_SetCache';\nimport arrayIncludes from './_arrayIncludes';\nimport arrayIncludesWith from './_arrayIncludesWith';\nimport cacheHas from './_cacheHas';\nimport createSet from './_createSet';\nimport setToArray from './_setToArray';\n\n/** Used as the size to enable large array optimizations. */\nvar LARGE_ARRAY_SIZE = 200;\n\n/**\n * The base implementation of `_.uniqBy` without support for iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new duplicate free array.\n */\nfunction baseUniq(array, iteratee, comparator) {\n  var index = -1,\n      includes = arrayIncludes,\n      length = array.length,\n      isCommon = true,\n      result = [],\n      seen = result;\n\n  if (comparator) {\n    isCommon = false;\n    includes = arrayIncludesWith;\n  }\n  else if (length >= LARGE_ARRAY_SIZE) {\n    var set = iteratee ? null : createSet(array);\n    if (set) {\n      return setToArray(set);\n    }\n    isCommon = false;\n    includes = cacheHas;\n    seen = new SetCache;\n  }\n  else {\n    seen = iteratee ? [] : result;\n  }\n  outer:\n  while (++index < length) {\n    var value = array[index],\n        computed = iteratee ? iteratee(value) : value;\n\n    value = (comparator || value !== 0) ? value : 0;\n    if (isCommon && computed === computed) {\n      var seenIndex = seen.length;\n      while (seenIndex--) {\n        if (seen[seenIndex] === computed) {\n          continue outer;\n        }\n      }\n      if (iteratee) {\n        seen.push(computed);\n      }\n      result.push(value);\n    }\n    else if (!includes(seen, computed, comparator)) {\n      if (seen !== result) {\n        seen.push(computed);\n      }\n      result.push(value);\n    }\n  }\n  return result;\n}\n\nexport default baseUniq;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_baseUniq.js\n// module id = 44\n// module chunks = 0","export { default } from './assignIn'\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/extend.js\n// module id = 45\n// module chunks = 0","/**\n * Checks if `value` is object-like. A value is object-like if it's not `null`\n * and has a `typeof` result of \"object\".\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is object-like, else `false`.\n * @example\n *\n * _.isObjectLike({});\n * // => true\n *\n * _.isObjectLike([1, 2, 3]);\n * // => true\n *\n * _.isObjectLike(_.noop);\n * // => false\n *\n * _.isObjectLike(null);\n * // => false\n */\nfunction isObjectLike(value) {\n  return !!value && typeof value == 'object';\n}\n\nexport default isObjectLike;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/isObjectLike.js\n// module id = 46\n// module chunks = 0","import isObjectLike from './isObjectLike';\n\n/** `Object#toString` result references. */\nvar symbolTag = '[object Symbol]';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/**\n * Used to resolve the\n * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)\n * of values.\n */\nvar objectToString = objectProto.toString;\n\n/**\n * Checks if `value` is classified as a `Symbol` primitive or object.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is correctly classified,\n *  else `false`.\n * @example\n *\n * _.isSymbol(Symbol.iterator);\n * // => true\n *\n * _.isSymbol('abc');\n * // => false\n */\nfunction isSymbol(value) {\n  return typeof value == 'symbol' ||\n    (isObjectLike(value) && objectToString.call(value) == symbolTag);\n}\n\nexport default isSymbol;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/isSymbol.js\n// module id = 47\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/* global console */\n\n/**\n * @module utils/log\n */\n\n/**\n * The logging module.\n *\n * This object features two functions that should be used across CKEditor code base to log errors and warnings.\n * Despite being an overridable interface for native `console.*` this module serves also the goal to limit the\n * code size of a minified CKEditor package. During minification process the messages will be shortened and\n * links to their documentation will be logged to the console.\n *\n * All errors and warning should be documented in the following way:\n *\n *\t\t/**\n *\t\t * Error thrown when a plugin cannot be loaded due to JavaScript errors, lack of plugins with a given name, etc.\n *\t\t *\n *\t\t * @error plugin-load\n *\t\t * @param pluginName The name of the plugin that could not be loaded.\n *\t\t * @param moduleName The name of the module which tried to load this plugin.\n *\t\t * /\n *\t\tlog.error( 'plugin-load: It was not possible to load the \"{$pluginName}\" plugin in module \"{$moduleName}', {\n *\t\t\tpluginName: 'foo',\n *\t\t\tmoduleName: 'bar'\n *\t\t} );\n *\n * ### Warning vs Error vs Throw\n *\n * * Whenever a potentially incorrect situation occurs, which does not directly lead to an incorrect behavior,\n * log a warning.\n * * Whenever an incorrect situation occurs, but the app may continue working (although perhaps incorrectly),\n * log an error.\n * * Whenever it's really bad and it does not make sense to continue working, throw a {@link module:utils/ckeditorerror~CKEditorError}.\n *\n * @namespace\n */\nconst log = {\n\t/**\n\t * Logs an error to the console.\n\t *\n\t * Read more about error logging in the {@link module:utils/log} module.\n\t *\n\t * @param {String} message The error message in an `error-name: Error message.` format.\n\t * During the minification process the \"Error message\" part will be removed to limit the code size\n\t * and a link to this error documentation will be logged to the console.\n\t * @param {Object} [data] Additional data describing the error.\n\t */\n\terror( message, data ) {\n\t\tconsole.error( message, data );\n\t},\n\n\t/**\n\t * Logs a warning to the console.\n\t *\n\t * Read more about error logging in the {@link module:utils/log} module.\n\t *\n\t * @param {String} message The warning message in a `warning-name: Warning message.` format.\n\t * During the minification process the \"Warning message\" part will be removed to limit the code size\n\t * and a link to this error documentation will be logged to the console.\n\t * @param {Object} [data] Additional data describing the warning.\n\t */\n\twarn( message, data ) {\n\t\tconsole.warn( message, data );\n\t}\n};\n\nexport default log;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/log.js\n// module id = 48\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module module:engine/model/documentfragment\n */\n\nimport NodeList from './nodelist';\nimport Element from './element';\nimport Text from './text';\nimport isIterable from '@ckeditor/ckeditor5-utils/src/isiterable';\n\n/**\n * DocumentFragment represents a part of model which does not have a common root but it's top-level nodes\n * can be seen as siblings. In other words, it is a detached part of model tree, without a root.\n *\n * DocumentFragment has own {@link module:engine/model/markercollection~MarkerCollection}. Markers from this collection\n * will be set to the {@link module:engine/model/document~Document#markers document markers} by a\n * {@link module:engine/model/writer~writer.insert} function.\n */\nexport default class DocumentFragment {\n\t/**\n\t * Creates an empty `DocumentFragment`.\n\t *\n\t * @param {module:engine/model/node~Node|Iterable.<module:engine/model/node~Node>} [children]\n\t * Nodes to be contained inside the `DocumentFragment`.\n\t */\n\tconstructor( children ) {\n\t\t/**\n\t\t * DocumentFragment static markers map. This is a list of names and {@link module:engine/model/range~Range ranges}\n\t\t * which will be set as Markers to {@link module:engine/model/document~Document#markers document markers collection}\n\t\t * when DocumentFragment will be inserted to the document.\n\t\t *\n\t\t * @member {Map<String, {module:engine/model/range~Range}>} module:engine/model/documentfragment~DocumentFragment#markers\n\t\t */\n\t\tthis.markers = new Map();\n\n\t\t/**\n\t\t * List of nodes contained inside the document fragment.\n\t\t *\n\t\t * @private\n\t\t * @member {module:engine/model/nodelist~NodeList} module:engine/model/documentfragment~DocumentFragment#_children\n\t\t */\n\t\tthis._children = new NodeList();\n\n\t\tif ( children ) {\n\t\t\tthis.insertChildren( 0, children );\n\t\t}\n\t}\n\n\t/**\n\t * Returns an iterator that iterates over all nodes contained inside this document fragment.\n\t *\n\t * @returns {Iterator.<module:engine/model/node~Node>}\n\t */\n\t[ Symbol.iterator ]() {\n\t\treturn this.getChildren();\n\t}\n\n\t/**\n\t * Number of this document fragment's children.\n\t *\n\t * @readonly\n\t * @type {Number}\n\t */\n\tget childCount() {\n\t\treturn this._children.length;\n\t}\n\n\t/**\n\t * Sum of {module:engine/model/node~Node#offsetSize offset sizes} of all of this document fragment's children.\n\t *\n\t * @readonly\n\t * @type {Number}\n\t */\n\tget maxOffset() {\n\t\treturn this._children.maxOffset;\n\t}\n\n\t/**\n\t * Is `true` if there are no nodes inside this document fragment, `false` otherwise.\n\t *\n\t * @readonly\n\t * @type {Boolean}\n\t */\n\tget isEmpty() {\n\t\treturn this.childCount === 0;\n\t}\n\n\t/**\n\t * Artificial root of `DocumentFragment`. Returns itself. Added for compatibility reasons.\n\t *\n\t * @readonly\n\t * @type {module:engine/model/documentfragment~DocumentFragment}\n\t */\n\tget root() {\n\t\treturn this;\n\t}\n\n\t/**\n\t * Artificial parent of `DocumentFragment`. Returns `null`. Added for compatibility reasons.\n\t *\n\t * @readonly\n\t * @type {null}\n\t */\n\tget parent() {\n\t\treturn null;\n\t}\n\n\t/**\n\t * Checks whether given model tree object is of given type.\n\t *\n\t * Read more in {@link module:engine/model/node~Node#is}.\n\t *\n\t * @param {String} type\n\t * @returns {Boolean}\n\t */\n\tis( type ) {\n\t\treturn type == 'documentFragment';\n\t}\n\n\t/**\n\t * Gets the child at the given index. Returns `null` if incorrect index was passed.\n\t *\n\t * @param {Number} index Index of child.\n\t * @returns {module:engine/model/node~Node|null} Child node.\n\t */\n\tgetChild( index ) {\n\t\treturn this._children.getNode( index );\n\t}\n\n\t/**\n\t * Returns an iterator that iterates over all of this document fragment's children.\n\t *\n\t * @returns {Iterable.<module:engine/model/node~Node>}\n\t */\n\tgetChildren() {\n\t\treturn this._children[ Symbol.iterator ]();\n\t}\n\n\t/**\n\t * Returns an index of the given child node. Returns `null` if given node is not a child of this document fragment.\n\t *\n\t * @param {module:engine/model/node~Node} node Child node to look for.\n\t * @returns {Number|null} Child node's index.\n\t */\n\tgetChildIndex( node ) {\n\t\treturn this._children.getNodeIndex( node );\n\t}\n\n\t/**\n\t * Returns the starting offset of given child. Starting offset is equal to the sum of\n\t * {module:engine/model/node~Node#offsetSize offset sizes} of all node's siblings that are before it. Returns `null` if\n\t * given node is not a child of this document fragment.\n\t *\n\t * @param {module:engine/model/node~Node} node Child node to look for.\n\t * @returns {Number|null} Child node's starting offset.\n\t */\n\tgetChildStartOffset( node ) {\n\t\treturn this._children.getNodeStartOffset( node );\n\t}\n\n\t/**\n\t * Returns path to a `DocumentFragment`, which is an empty array. Added for compatibility reasons.\n\t *\n\t * @returns {Array}\n\t */\n\tgetPath() {\n\t\treturn [];\n\t}\n\n\t/**\n\t * Converts offset \"position\" to index \"position\".\n\t *\n\t * Returns index of a node that occupies given offset. If given offset is too low, returns `0`. If given offset is\n\t * too high, returns index after last child}.\n\t *\n\t *\t\tconst textNode = new Text( 'foo' );\n\t *\t\tconst pElement = new Element( 'p' );\n\t *\t\tconst docFrag = new DocumentFragment( [ textNode, pElement ] );\n\t *\t\tdocFrag.offsetToIndex( -1 ); // Returns 0, because offset is too low.\n\t *\t\tdocFrag.offsetToIndex( 0 ); // Returns 0, because offset 0 is taken by `textNode` which is at index 0.\n\t *\t\tdocFrag.offsetToIndex( 1 ); // Returns 0, because `textNode` has `offsetSize` equal to 3, so it occupies offset 1 too.\n\t *\t\tdocFrag.offsetToIndex( 2 ); // Returns 0.\n\t *\t\tdocFrag.offsetToIndex( 3 ); // Returns 1.\n\t *\t\tdocFrag.offsetToIndex( 4 ); // Returns 2. There are no nodes at offset 4, so last available index is returned.\n\t *\n\t * @param {Number} offset Offset to look for.\n\t * @returns {Number} Index of a node that occupies given offset.\n\t */\n\toffsetToIndex( offset ) {\n\t\treturn this._children.offsetToIndex( offset );\n\t}\n\n\t/**\n\t * {@link #insertChildren Inserts} one or more nodes at the end of this document fragment.\n\t *\n\t * @param {module:engine/model/node~Node|Iterable.<module:engine/model/node~Node>} nodes Nodes to be inserted.\n\t */\n\tappendChildren( nodes ) {\n\t\tthis.insertChildren( this.childCount, nodes );\n\t}\n\n\t/**\n\t * Inserts one or more nodes at the given index and sets {@link module:engine/model/node~Node#parent parent} of these nodes\n\t * to this document fragment.\n\t *\n\t * @param {Number} index Index at which nodes should be inserted.\n\t * @param {module:engine/model/node~Node|Iterable.<module:engine/model/node~Node>} nodes Nodes to be inserted.\n\t */\n\tinsertChildren( index, nodes ) {\n\t\tnodes = normalize( nodes );\n\n\t\tfor ( let node of nodes ) {\n\t\t\tnode.parent = this;\n\t\t}\n\n\t\tthis._children.insertNodes( index, nodes );\n\t}\n\n\t/**\n\t * Removes one or more nodes starting at the given index\n\t * and sets {@link module:engine/model/node~Node#parent parent} of these nodes to `null`.\n\t *\n\t * @param {Number} index Index of the first node to remove.\n\t * @param {Number} [howMany=1] Number of nodes to remove.\n\t * @returns {Array.<module:engine/model/node~Node>} Array containing removed nodes.\n\t */\n\tremoveChildren( index, howMany = 1 ) {\n\t\tconst nodes = this._children.removeNodes( index, howMany );\n\n\t\tfor ( let node of nodes ) {\n\t\t\tnode.parent = null;\n\t\t}\n\n\t\treturn nodes;\n\t}\n\n\t/**\n\t * Converts `DocumentFragment` instance to plain object and returns it.\n\t * Takes care of converting all of this document fragment's children.\n\t *\n\t * @returns {Object} `DocumentFragment` instance converted to plain object.\n\t */\n\ttoJSON() {\n\t\tlet json = [];\n\n\t\tfor ( let node of this._children ) {\n\t\t\tjson.push( node.toJSON() );\n\t\t}\n\n\t\treturn json;\n\t}\n\n\t/**\n\t * Creates a `DocumentFragment` instance from given plain object (i.e. parsed JSON string).\n\t * Converts `DocumentFragment` children to proper nodes.\n\t *\n\t * @param {Object} json Plain object to be converted to `DocumentFragment`.\n\t * @returns {module:engine/model/documentfragment~DocumentFragment} `DocumentFragment` instance created using given plain object.\n\t */\n\tstatic fromJSON( json ) {\n\t\tlet children = [];\n\n\t\tfor ( let child of json ) {\n\t\t\tif ( child.name ) {\n\t\t\t\t// If child has name property, it is an Element.\n\t\t\t\tchildren.push( Element.fromJSON( child ) );\n\t\t\t} else {\n\t\t\t\t// Otherwise, it is a Text node.\n\t\t\t\tchildren.push( Text.fromJSON( child ) );\n\t\t\t}\n\t\t}\n\n\t\treturn new DocumentFragment( children );\n\t}\n}\n\n// Converts strings to Text and non-iterables to arrays.\n//\n// @param {String|module:engine/model/node~Node|Iterable.<String|module:engine/model/node~Node>}\n// @return {Iterable.<module:engine/model/node~Node>}\nfunction normalize( nodes ) {\n\t// Separate condition because string is iterable.\n\tif ( typeof nodes == 'string' ) {\n\t\treturn [ new Text( nodes ) ];\n\t}\n\n\tif ( !isIterable( nodes ) ) {\n\t\tnodes = [ nodes ];\n\t}\n\n\t// Array.from to enable .map() on non-arrays.\n\treturn Array.from( nodes ).map( ( node ) => typeof node == 'string' ? new Text( node ) : node );\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/documentfragment.js\n// module id = 49\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/observer/observer\n */\n\nimport DomEmitterMixin from '@ckeditor/ckeditor5-utils/src/dom/emittermixin';\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\n\n/**\n * Abstract base observer class. Observers are classes which observe changes on DOM elements, do the preliminary\n * processing and fire events on the {@link module:engine/view/document~Document} objects. Observers can also add features to the view,\n * for instance by updating its status or marking elements which need refresh on DOM events.\n *\n * @abstract\n */\nexport default class Observer {\n\t/**\n\t * Creates an instance of the observer.\n\t *\n\t * @param {module:engine/view/document~Document} document\n\t */\n\tconstructor( document ) {\n\t\t/**\n\t\t * Reference to the {@link module:engine/view/document~Document} object.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/view/document~Document}\n\t\t */\n\t\tthis.document = document;\n\n\t\t/**\n\t\t * State of the observer. If it is disabled events will not be fired.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Boolean}\n\t\t */\n\t\tthis.isEnabled = false;\n\t}\n\n\t/**\n\t * Enables the observer. This method is called when then observer is registered to the\n\t * {@link module:engine/view/document~Document} and after {@link module:engine/view/document~Document#render rendering}\n\t * (all observers are {@link #disable disabled} before rendering).\n\t *\n\t * A typical use case for disabling observers is that mutation observers need to be disabled for the rendering.\n\t * However, a child class may not need to be disabled, so it can implement an empty method.\n\t *\n\t * @see module:engine/view/observer/observer~Observer#disable\n\t */\n\tenable() {\n\t\tthis.isEnabled = true;\n\t}\n\n\t/**\n\t * Disables the observer. This method is called before\n\t * {@link module:engine/view/document~Document#render rendering} to prevent firing events during rendering.\n\t *\n\t * @see module:engine/view/observer/observer~Observer#enable\n\t */\n\tdisable() {\n\t\tthis.isEnabled = false;\n\t}\n\n\t/**\n\t * Disables and destroys the observer, among others removes event listeners created by the observer.\n\t */\n\tdestroy() {\n\t\tthis.disable();\n\t\tthis.stopListening();\n\t}\n\n\t/**\n\t * Starts observing the given root element.\n\t *\n\t * @method #observe\n\t * @param {HTMLElement} domElement\n\t * @param {String} name The name of the root element.\n\t */\n}\n\nmix( Observer, DomEmitterMixin );\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/view/observer/observer.js\n// module id = 50\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/treewalker\n */\n\nimport Element from './element';\nimport Text from './text';\nimport TextProxy from './textproxy';\nimport Position from './position';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/**\n * Position iterator class. It allows to iterate forward and backward over the document.\n */\nexport default class TreeWalker {\n\t/**\n\t * Creates a range iterator. All parameters are optional, but you have to specify either `boundaries` or `startPosition`.\n\t *\n\t * @constructor\n\t * @param {Object} options Object with configuration.\n\t * @param {module:engine/view/range~Range} [options.boundaries=null] Range to define boundaries of the iterator.\n\t * @param {module:engine/view/position~Position} [options.startPosition] Starting position.\n\t * @param {'forward'|'backward'} [options.direction='forward'] Walking direction.\n\t * @param {Boolean} [options.singleCharacters=false] Flag indicating whether all characters from\n\t * {@link module:engine/view/text~Text} should be returned as one {@link module:engine/view/text~Text} (`false`) ore one by one as\n\t * {@link module:engine/view/textproxy~TextProxy} (`true`).\n\t * @param {Boolean} [options.shallow=false] Flag indicating whether iterator should enter elements or not. If the\n\t * iterator is shallow child nodes of any iterated node will not be returned along with `elementEnd` tag.\n\t * @param {Boolean} [options.ignoreElementEnd=false] Flag indicating whether iterator should ignore `elementEnd`\n\t * tags. If the option is true walker will not return a parent node of start position. If this option is `true`\n\t * each {@link module:engine/view/element~Element} will be returned once, while if the option is `false` they might be returned\n\t * twice: for `'elementStart'` and `'elementEnd'`.\n\t */\n\tconstructor( options = {} ) {\n\t\tif ( !options.boundaries && !options.startPosition ) {\n\t\t\t/**\n\t\t\t * Neither boundaries nor starting position have been defined.\n\t\t\t *\n\t\t\t * @error tree-walker-no-start-position\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'view-tree-walker-no-start-position: Neither boundaries nor starting position have been defined.' );\n\t\t}\n\n\t\tif ( options.direction && options.direction != 'forward' && options.direction != 'backward' ) {\n\t\t\tthrow new CKEditorError(\n\t\t\t\t'view-tree-walker-unknown-direction: Only `backward` and `forward` direction allowed.',\n\t\t\t\t{ direction: options.direction }\n\t\t\t);\n\t\t}\n\n\t\t/**\n\t\t * Iterator boundaries.\n\t\t *\n\t\t * When the iterator is walking `'forward'` on the end of boundary or is walking `'backward'`\n\t\t * on the start of boundary, then `{ done: true }` is returned.\n\t\t *\n\t\t * If boundaries are not defined they are set before first and after last child of the root node.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/view/range~Range} module:engine/view/treewalker~TreeWalker#boundaries\n\t\t */\n\t\tthis.boundaries = options.boundaries || null;\n\n\t\t/**\n\t\t * Iterator position. If start position is not defined then position depends on {@link #direction}. If direction is\n\t\t * `'forward'` position starts form the beginning, when direction is `'backward'` position starts from the end.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/view/position~Position} module:engine/view/treewalker~TreeWalker#position\n\t\t */\n\t\tif ( options.startPosition ) {\n\t\t\tthis.position = Position.createFromPosition( options.startPosition );\n\t\t} else {\n\t\t\tthis.position = Position.createFromPosition( options.boundaries[ options.direction == 'backward' ? 'end' : 'start' ] );\n\t\t}\n\n\t\t/**\n\t\t * Walking direction. Defaults `'forward'`.\n\t\t *\n\t\t * @readonly\n\t\t * @member {'backward'|'forward'} module:engine/view/treewalker~TreeWalker#direction\n\t\t */\n\t\tthis.direction = options.direction || 'forward';\n\n\t\t/**\n\t\t * Flag indicating whether all characters from {@link module:engine/view/text~Text} should be returned as one\n\t\t * {@link module:engine/view/text~Text} or one by one as {@link module:engine/view/textproxy~TextProxy}.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Boolean} module:engine/view/treewalker~TreeWalker#singleCharacters\n\t\t */\n\t\tthis.singleCharacters = !!options.singleCharacters;\n\n\t\t/**\n\t\t * Flag indicating whether iterator should enter elements or not. If the iterator is shallow child nodes of any\n\t\t * iterated node will not be returned along with `elementEnd` tag.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Boolean} module:engine/view/treewalker~TreeWalker#shallow\n\t\t */\n\t\tthis.shallow = !!options.shallow;\n\n\t\t/**\n\t\t * Flag indicating whether iterator should ignore `elementEnd` tags. If set to `true`, walker will not\n\t\t * return a parent node of the start position. Each {@link module:engine/view/element~Element} will be returned once.\n\t\t * When set to `false` each element might be returned twice: for `'elementStart'` and `'elementEnd'`.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Boolean} module:engine/view/treewalker~TreeWalker#ignoreElementEnd\n\t\t */\n\t\tthis.ignoreElementEnd = !!options.ignoreElementEnd;\n\n\t\t/**\n\t\t * Start boundary parent.\n\t\t *\n\t\t * @private\n\t\t * @member {module:engine/view/node~Node} module:engine/view/treewalker~TreeWalker#_boundaryStartParent\n\t\t */\n\t\tthis._boundaryStartParent = this.boundaries ? this.boundaries.start.parent : null;\n\n\t\t/**\n\t\t * End boundary parent.\n\t\t *\n\t\t * @private\n\t\t * @member {module:engine/view/node~Node} module:engine/view/treewalker~TreeWalker#_boundaryEndParent\n\t\t */\n\t\tthis._boundaryEndParent = this.boundaries ? this.boundaries.end.parent : null;\n\t}\n\n\t/**\n\t * Iterator interface.\n\t */\n\t[ Symbol.iterator ]() {\n\t\treturn this;\n\t}\n\n\t/**\n\t * Moves {@link #position} in the {@link #direction} skipping values as long as the callback function returns `true`.\n\t *\n\t * For example:\n\t *\n\t * \t\twalker.skip( value => value.type == 'text' ); // <p>{}foo</p> -> <p>foo[]</p>\n\t * \t\twalker.skip( value => true ); // Move the position to the end: <p>{}foo</p> -> <p>foo</p>[]\n\t * \t\twalker.skip( value => false ); // Do not move the position.\n\t *\n\t * @param {Function} skip Callback function. Gets {@link module:engine/view/treewalker~TreeWalkerValue} and should\n\t * return `true` if the value should be skipped or `false` if not.\n\t */\n\tskip( skip ) {\n\t\tlet done, value, prevPosition;\n\n\t\tdo {\n\t\t\tprevPosition = this.position;\n\n\t\t\t( { done, value } = this.next() );\n\t\t} while ( !done && skip( value ) );\n\n\t\tif ( !done ) {\n\t\t\tthis.position = prevPosition;\n\t\t}\n\t}\n\n\t/**\n\t * Iterator interface method.\n\t * Detects walking direction and makes step forward or backward.\n\t *\n\t * @returns {Object} Object implementing iterator interface, returning information about taken step.\n\t */\n\tnext() {\n\t\tif ( this.direction == 'forward' ) {\n\t\t\treturn this._next();\n\t\t} else {\n\t\t\treturn this._previous();\n\t\t}\n\t}\n\n\t/**\n\t * Makes a step forward in view. Moves the {@link #position} to the next position and returns the encountered value.\n\t *\n\t * @private\n\t * @returns {Object}\n\t * @returns {Boolean} return.done `true` if iterator is done, `false` otherwise.\n\t * @returns {module:engine/view/treewalker~TreeWalkerValue} return.value Information about taken step.\n\t */\n\t_next() {\n\t\tlet position = Position.createFromPosition( this.position );\n\t\tconst previousPosition = this.position;\n\t\tconst parent = position.parent;\n\n\t\t// We are at the end of the root.\n\t\tif ( parent.parent === null && position.offset === parent.childCount ) {\n\t\t\treturn { done: true };\n\t\t}\n\n\t\t// We reached the walker boundary.\n\t\tif ( parent === this._boundaryEndParent && position.offset == this.boundaries.end.offset ) {\n\t\t\treturn { done: true };\n\t\t}\n\n\t\t// Get node just after current position.\n\t\tlet node;\n\n\t\t// Text is a specific parent because it contains string instead of child nodes.\n\t\tif ( parent instanceof Text ) {\n\t\t\tif ( position.isAtEnd ) {\n\t\t\t\t// Prevent returning \"elementEnd\" for Text node. Skip that value and return the next walker step.\n\t\t\t\tthis.position = Position.createAfter( parent );\n\n\t\t\t\treturn this._next();\n\t\t\t}\n\n\t\t\tnode = parent.data[ position.offset ];\n\t\t} else {\n\t\t\tnode = parent.getChild( position.offset );\n\t\t}\n\n\t\tif ( node instanceof Element ) {\n\t\t\tif ( !this.shallow ) {\n\t\t\t\tposition = new Position( node, 0 );\n\t\t\t} else {\n\t\t\t\tposition.offset++;\n\t\t\t}\n\n\t\t\tthis.position = position;\n\n\t\t\treturn this._formatReturnValue( 'elementStart', node, previousPosition, position, 1 );\n\t\t} else if ( node instanceof Text ) {\n\t\t\tif ( this.singleCharacters ) {\n\t\t\t\tposition = new Position( node, 0 );\n\t\t\t\tthis.position = position;\n\n\t\t\t\treturn this._next();\n\t\t\t} else {\n\t\t\t\tlet charactersCount = node.data.length;\n\t\t\t\tlet item = node;\n\n\t\t\t\t// If text stick out of walker range, we need to cut it and wrap by TextProxy.\n\t\t\t\tif ( node == this._boundaryEndParent ) {\n\t\t\t\t\tcharactersCount = this.boundaries.end.offset;\n\t\t\t\t\titem = new TextProxy( node, 0, charactersCount );\n\t\t\t\t\tposition = Position.createAfter( item );\n\t\t\t\t} else {\n\t\t\t\t\t// If not just keep moving forward.\n\t\t\t\t\tposition.offset++;\n\t\t\t\t}\n\n\t\t\t\tthis.position = position;\n\n\t\t\t\treturn this._formatReturnValue( 'text', item, previousPosition, position, charactersCount );\n\t\t\t}\n\t\t} else if ( typeof node == 'string' ) {\n\t\t\tlet textLength;\n\n\t\t\tif ( this.singleCharacters ) {\n\t\t\t\ttextLength = 1;\n\t\t\t} else {\n\t\t\t\t// Check if text stick out of walker range.\n\t\t\t\tconst endOffset = parent === this._boundaryEndParent ? this.boundaries.end.offset : parent.data.length;\n\n\t\t\t\ttextLength = endOffset - position.offset;\n\t\t\t}\n\n\t\t\tconst textProxy = new TextProxy( parent, position.offset, textLength );\n\n\t\t\tposition.offset += textLength;\n\t\t\tthis.position = position;\n\n\t\t\treturn this._formatReturnValue( 'text', textProxy, previousPosition, position, textLength );\n\t\t} else {\n\t\t\t// `node` is not set, we reached the end of current `parent`.\n\t\t\tposition = Position.createAfter( parent );\n\t\t\tthis.position = position;\n\n\t\t\tif ( this.ignoreElementEnd ) {\n\t\t\t\treturn this._next();\n\t\t\t} else {\n\t\t\t\treturn this._formatReturnValue( 'elementEnd', parent, previousPosition, position );\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Makes a step backward in view. Moves the {@link #position} to the previous position and returns the encountered value.\n\t *\n\t * @private\n\t * @returns {Object}\n\t * @returns {Boolean} return.done True if iterator is done.\n\t * @returns {module:engine/view/treewalker~TreeWalkerValue} return.value Information about taken step.\n\t */\n\t_previous() {\n\t\tlet position = Position.createFromPosition( this.position );\n\t\tconst previousPosition = this.position;\n\t\tconst parent = position.parent;\n\n\t\t// We are at the beginning of the root.\n\t\tif ( parent.parent === null && position.offset === 0 ) {\n\t\t\treturn { done: true };\n\t\t}\n\n\t\t// We reached the walker boundary.\n\t\tif ( parent == this._boundaryStartParent && position.offset == this.boundaries.start.offset ) {\n\t\t\treturn { done: true };\n\t\t}\n\n\t\t// Get node just before current position.\n\t\tlet node;\n\n\t\t// Text {@link module:engine/view/text~Text} element is a specific parent because contains string instead of child nodes.\n\t\tif ( parent instanceof Text ) {\n\t\t\tif ( position.isAtStart ) {\n\t\t\t\t// Prevent returning \"elementStart\" for Text node. Skip that value and return the next walker step.\n\t\t\t\tthis.position = Position.createBefore( parent );\n\n\t\t\t\treturn this._previous();\n\t\t\t}\n\n\t\t\tnode = parent.data[ position.offset - 1 ];\n\t\t} else {\n\t\t\tnode = parent.getChild( position.offset - 1 );\n\t\t}\n\n\t\tif ( node instanceof Element ) {\n\t\t\tif ( !this.shallow ) {\n\t\t\t\tposition = new Position( node, node.childCount );\n\t\t\t\tthis.position = position;\n\n\t\t\t\tif ( this.ignoreElementEnd ) {\n\t\t\t\t\treturn this._previous();\n\t\t\t\t} else {\n\t\t\t\t\treturn this._formatReturnValue( 'elementEnd', node, previousPosition, position );\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\tposition.offset--;\n\t\t\t\tthis.position = position;\n\n\t\t\t\treturn this._formatReturnValue( 'elementStart', node, previousPosition, position, 1 );\n\t\t\t}\n\t\t} else if ( node instanceof Text ) {\n\t\t\tif ( this.singleCharacters ) {\n\t\t\t\tposition = new Position( node, node.data.length );\n\t\t\t\tthis.position = position;\n\n\t\t\t\treturn this._previous();\n\t\t\t} else {\n\t\t\t\tlet charactersCount = node.data.length;\n\t\t\t\tlet item = node;\n\n\t\t\t\t// If text stick out of walker range, we need to cut it and wrap by TextProxy.\n\t\t\t\tif ( node == this._boundaryStartParent ) {\n\t\t\t\t\tconst offset = this.boundaries.start.offset;\n\n\t\t\t\t\titem = new TextProxy( node, offset, node.data.length - offset );\n\t\t\t\t\tcharactersCount = item.data.length;\n\t\t\t\t\tposition = Position.createBefore( item );\n\t\t\t\t} else {\n\t\t\t\t\t// If not just keep moving backward.\n\t\t\t\t\tposition.offset--;\n\t\t\t\t}\n\n\t\t\t\tthis.position = position;\n\n\t\t\t\treturn this._formatReturnValue( 'text', item, previousPosition, position, charactersCount );\n\t\t\t}\n\t\t} else if ( typeof node == 'string' ) {\n\t\t\tlet textLength;\n\n\t\t\tif ( !this.singleCharacters ) {\n\t\t\t\t// Check if text stick out of walker range.\n\t\t\t\tconst startOffset = parent === this._boundaryStartParent ? this.boundaries.start.offset : 0;\n\n\t\t\t\ttextLength = position.offset - startOffset;\n\t\t\t} else {\n\t\t\t\ttextLength = 1;\n\t\t\t}\n\n\t\t\tposition.offset -= textLength;\n\n\t\t\tconst textProxy = new TextProxy( parent, position.offset, textLength );\n\n\t\t\tthis.position = position;\n\n\t\t\treturn this._formatReturnValue( 'text', textProxy, previousPosition, position, textLength );\n\t\t} else {\n\t\t\t// `node` is not set, we reached the beginning of current `parent`.\n\t\t\tposition = Position.createBefore( parent );\n\t\t\tthis.position = position;\n\n\t\t\treturn this._formatReturnValue( 'elementStart', parent, previousPosition, position, 1 );\n\t\t}\n\t}\n\n\t/**\n\t * Format returned data and adjust `previousPosition` and `nextPosition` if reach the bound of the {@link module:engine/view/text~Text}.\n\t *\n\t * @private\n\t * @param {module:engine/view/treewalker~TreeWalkerValueType} type Type of step.\n\t * @param {module:engine/view/item~Item} item Item between old and new position.\n\t * @param {module:engine/view/position~Position} previousPosition Previous position of iterator.\n\t * @param {module:engine/view/position~Position} nextPosition Next position of iterator.\n\t * @param {Number} [length] Length of the item.\n\t * @returns {module:engine/view/treewalker~TreeWalkerValue}\n\t */\n\t_formatReturnValue( type, item, previousPosition, nextPosition, length ) {\n\t\t// Text is a specific parent, because contains string instead of children.\n\t\t// Walker doesn't enter to the Text except situations when walker is iterating over every single character,\n\t\t// or the bound starts/ends inside the Text. So when the position is at the beginning or at the end of the Text\n\t\t// we move it just before or just after Text.\n\t\tif ( item instanceof TextProxy ) {\n\t\t\t// Position is at the end of Text.\n\t\t\tif ( item.offsetInText + item.data.length == item.textNode.data.length ) {\n\t\t\t\tif ( this.direction == 'forward' && !( this.boundaries && this.boundaries.end.isEqual( this.position ) ) ) {\n\t\t\t\t\tnextPosition = Position.createAfter( item.textNode );\n\t\t\t\t\t// When we change nextPosition of returned value we need also update walker current position.\n\t\t\t\t\tthis.position = nextPosition;\n\t\t\t\t} else {\n\t\t\t\t\tpreviousPosition = Position.createAfter( item.textNode );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Position is at the begining ot the text.\n\t\t\tif ( item.offsetInText === 0 ) {\n\t\t\t\tif ( this.direction == 'backward' && !( this.boundaries && this.boundaries.start.isEqual( this.position ) ) ) {\n\t\t\t\t\tnextPosition = Position.createBefore( item.textNode );\n\t\t\t\t\t// When we change nextPosition of returned value we need also update walker current position.\n\t\t\t\t\tthis.position = nextPosition;\n\t\t\t\t} else {\n\t\t\t\t\tpreviousPosition = Position.createBefore( item.textNode );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn {\n\t\t\tdone: false,\n\t\t\tvalue: {\n\t\t\t\ttype: type,\n\t\t\t\titem: item,\n\t\t\t\tpreviousPosition: previousPosition,\n\t\t\t\tnextPosition: nextPosition,\n\t\t\t\tlength: length\n\t\t\t}\n\t\t};\n\t}\n}\n\n/**\n * Type of the step made by {@link module:engine/view/treewalker~TreeWalker}.\n * Possible values: `'elementStart'` if walker is at the beginning of a node, `'elementEnd'` if walker is at the end\n * of node, or `'text'` if walker traversed over single and multiple characters.\n * For {@link module:engine/view/text~Text} `elementStart` and `elementEnd` is not returned.\n *\n * @typedef {String} module:engine/view/treewalker~TreeWalkerValueType\n */\n\n/**\n * Object returned by {@link module:engine/view/treewalker~TreeWalker} when traversing tree view.\n *\n * @typedef {Object} module:engine/view/treewalker~TreeWalkerValue\n * @property {module:engine/view/treewalker~TreeWalkerValueType} type\n * @property {module:engine/view/item~Item} item Item between old and new positions of {@link module:engine/view/treewalker~TreeWalker}.\n * @property {module:engine/view/position~Position} previousPosition Previous position of the iterator.\n * * Forward iteration: For `'elementEnd'` it is the last position inside the element. For all other types it is the\n * position before the item. Note that it is more efficient to use this position then calculate the position before\n * the node using {@link module:engine/view/position~Position.createBefore}.\n * * Backward iteration: For `'elementStart'` it is the first position inside the element. For all other types it is\n * the position after item.\n * * If the position is at the beginning or at the end of the {@link module:engine/view/text~Text} it is always moved from the\n * inside of the Text to its parent just before or just after Text.\n * @property {module:engine/view/position~Position} nextPosition Next position of the iterator.\n * * Forward iteration: For `'elementStart'` it is the first position inside the element. For all other types it is\n * the position after the item.\n * * Backward iteration: For `'elementEnd'` it is last position inside element. For all other types it is the position\n * before the item.\n * * If the position is at the beginning or at the end of the {@link module:engine/view/text~Text} it is always moved from the\n * inside of the Text to its parent just before or just after Text.\n * @property {Number} [length] Length of the item. For `'elementStart'` it is 1. For `'text'` it is\n * the length of the text. For `'elementEnd'` it is undefined.\n */\n\n/**\n * Tree walking directions.\n *\n * @typedef {'forward'|'backward'} module:engine/view/treewalker~TreeWalkerDirection\n */\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/view/treewalker.js\n// module id = 51\n// module chunks = 0","import isNative from './isNative';\n\n/**\n * Gets the native function at `key` of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {string} key The key of the method to get.\n * @returns {*} Returns the function if it's native, else `undefined`.\n */\nfunction getNative(object, key) {\n  var value = object[key];\n  return isNative(value) ? value : undefined;\n}\n\nexport default getNative;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_getNative.js\n// module id = 52\n// module chunks = 0","import isArray from './isArray';\nimport isSymbol from './isSymbol';\n\n/** Used to match property names within property paths. */\nvar reIsDeepProp = /\\.|\\[(?:[^[\\]]*|([\"'])(?:(?!\\1)[^\\\\]|\\\\.)*?\\1)\\]/,\n    reIsPlainProp = /^\\w*$/;\n\n/**\n * Checks if `value` is a property name and not a property path.\n *\n * @private\n * @param {*} value The value to check.\n * @param {Object} [object] The object to query keys on.\n * @returns {boolean} Returns `true` if `value` is a property name, else `false`.\n */\nfunction isKey(value, object) {\n  if (isArray(value)) {\n    return false;\n  }\n  var type = typeof value;\n  if (type == 'number' || type == 'symbol' || type == 'boolean' ||\n      value == null || isSymbol(value)) {\n    return true;\n  }\n  return reIsPlainProp.test(value) || !reIsDeepProp.test(value) ||\n    (object != null && value in Object(object));\n}\n\nexport default isKey;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_isKey.js\n// module id = 53\n// module chunks = 0","import isSymbol from './isSymbol';\n\n/** Used as references for various `Number` constants. */\nvar INFINITY = 1 / 0;\n\n/**\n * Converts `value` to a string key if it's not a string or symbol.\n *\n * @private\n * @param {*} value The value to inspect.\n * @returns {string|symbol} Returns the key.\n */\nfunction toKey(value) {\n  if (typeof value == 'string' || isSymbol(value)) {\n    return value;\n  }\n  var result = (value + '');\n  return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;\n}\n\nexport default toKey;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_toKey.js\n// module id = 54\n// module chunks = 0","/**\n * Performs a\n * [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)\n * comparison between two values to determine if they are equivalent.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n * @example\n *\n * var object = { 'user': 'fred' };\n * var other = { 'user': 'fred' };\n *\n * _.eq(object, object);\n * // => true\n *\n * _.eq(object, other);\n * // => false\n *\n * _.eq('a', 'a');\n * // => true\n *\n * _.eq('a', Object('a'));\n * // => false\n *\n * _.eq(NaN, NaN);\n * // => true\n */\nfunction eq(value, other) {\n  return value === other || (value !== value && other !== other);\n}\n\nexport default eq;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/eq.js\n// module id = 55\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/node\n */\n\nimport toMap from '@ckeditor/ckeditor5-utils/src/tomap';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/**\n * Model node. Most basic structure of model tree.\n *\n * This is an abstract class that is a base for other classes representing different nodes in model.\n *\n * **Note:** If a node is detached from the model tree, you can manipulate it using it's API.\n * However, it is **very important** that nodes already attached to model tree should be only changed through\n * {@link module:engine/model/document~Document#batch Batch API}.\n *\n * Changes done by `Node` methods, like {@link module:engine/model/element~Element#insertChildren insertChildren} or\n * {@link module:engine/model/node~Node#setAttribute setAttribute}\n * do not generate {@link module:engine/model/operation/operation~Operation operations}\n * which are essential for correct editor work if you modify nodes in {@link module:engine/model/document~Document document} root.\n *\n * The flow of working on `Node` (and classes that inherits from it) is as such:\n * 1. You can create a `Node` instance, modify it using it's API.\n * 2. Add `Node` to the model using `Batch` API.\n * 3. Change `Node` that was already added to the model using `Batch` API.\n *\n * Similarly, you cannot use `Batch` API on a node that has not been added to the model tree, with the exception\n * of {@link module:engine/model/batch~Batch#insert inserting} that node to the model tree.\n *\n * Be aware that using {@link module:engine/model/batch~Batch#remove remove from Batch API} does not allow to use `Node` API because\n * the information about `Node` is still kept in model document.\n *\n * In case of {@link module:engine/model/element~Element element node}, adding and removing children also counts as changing a node and\n * follows same rules.\n */\nexport default class Node {\n\t/**\n\t * Creates a model node.\n\t *\n\t * This is an abstract class, so this constructor should not be used directly.\n\t *\n\t * @abstract\n\t * @param {Object} [attrs] Node's attributes. See {@link module:utils/tomap~toMap} for a list of accepted values.\n\t */\n\tconstructor( attrs ) {\n\t\t/**\n\t\t * Parent of this node. It could be {@link module:engine/model/element~Element}\n\t\t * or {@link module:engine/model/documentfragment~DocumentFragment}.\n\t\t * Equals to `null` if the node has no parent.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/model/element~Element|module:engine/model/documentfragment~DocumentFragment|null}\n\t\t */\n\t\tthis.parent = null;\n\n\t\t/**\n\t\t * Attributes set on this node.\n\t\t *\n\t\t * @private\n\t\t * @member {Map} module:engine/model/node~Node#_attrs\n\t\t */\n\t\tthis._attrs = toMap( attrs );\n\t}\n\n\t/**\n\t * Index of this node in it's parent or `null` if the node has no parent.\n\t *\n\t * Accessing this property throws an error if this node's parent element does not contain it.\n\t * This means that model tree got broken.\n\t *\n\t * @readonly\n\t * @type {Number|null}\n\t */\n\tget index() {\n\t\tlet pos;\n\n\t\tif ( !this.parent ) {\n\t\t\treturn null;\n\t\t}\n\n\t\tif ( ( pos = this.parent.getChildIndex( this ) ) === null ) {\n\t\t\t/**\n\t\t\t * The node's parent does not contain this node.\n\t\t\t *\n\t\t\t * @error node-not-found-in-parent\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'model-node-not-found-in-parent: The node\\'s parent does not contain this node.' );\n\t\t}\n\n\t\treturn pos;\n\t}\n\n\t/**\n\t * Offset at which this node starts in it's parent. It is equal to the sum of {@link #offsetSize offsetSize}\n\t * of all it's previous siblings. Equals to `null` if node has no parent.\n\t *\n\t * Accessing this property throws an error if this node's parent element does not contain it.\n\t * This means that model tree got broken.\n\t *\n\t * @readonly\n\t * @type {Number|Null}\n\t */\n\tget startOffset() {\n\t\tlet pos;\n\n\t\tif ( !this.parent ) {\n\t\t\treturn null;\n\t\t}\n\n\t\tif ( ( pos = this.parent.getChildStartOffset( this ) ) === null ) {\n\t\t\t/**\n\t\t\t * The node's parent does not contain this node.\n\t\t\t *\n\t\t\t * @error node-not-found-in-parent\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'model-node-not-found-in-parent: The node\\'s parent does not contain this node.' );\n\t\t}\n\n\t\treturn pos;\n\t}\n\n\t/**\n\t * Offset size of this node. Represents how much \"offset space\" is occupied by the node in it's parent.\n\t * It is important for {@link module:engine/model/position~Position position}. When node has `offsetSize` greater than `1`, position\n\t * can be placed between that node start and end. `offsetSize` greater than `1` is for nodes that represents more\n\t * than one entity, i.e. {@link module:engine/model/text~Text text node}.\n\t *\n\t * @readonly\n\t * @type {Number}\n\t */\n\tget offsetSize() {\n\t\treturn 1;\n\t}\n\n\t/**\n\t * Offset at which this node ends in it's parent. It is equal to the sum of this node's\n\t * {@link module:engine/model/node~Node#startOffset start offset} and {@link #offsetSize offset size}.\n\t * Equals to `null` if the node has no parent.\n\t *\n\t * @readonly\n\t * @type {Number|null}\n\t */\n\tget endOffset() {\n\t\tif ( !this.parent ) {\n\t\t\treturn null;\n\t\t}\n\n\t\treturn this.startOffset + this.offsetSize;\n\t}\n\n\t/**\n\t * Node's next sibling or `null` if the node is a last child of it's parent or if the node has no parent.\n\t *\n\t * @readonly\n\t * @type {module:engine/model/node~Node|null}\n\t */\n\tget nextSibling() {\n\t\tconst index = this.index;\n\n\t\treturn ( index !== null && this.parent.getChild( index + 1 ) ) || null;\n\t}\n\n\t/**\n\t * Node's previous sibling or `null` if the node is a first child of it's parent or if the node has no parent.\n\t *\n\t * @readonly\n\t * @type {module:engine/model/node~Node|null}\n\t */\n\tget previousSibling() {\n\t\tconst index = this.index;\n\n\t\treturn ( index !== null && this.parent.getChild( index - 1 ) ) || null;\n\t}\n\n\t/**\n\t * The top-most ancestor of the node. If node has no parent it is the root itself. If the node is a part\n\t * of {@link module:engine/model/documentfragment~DocumentFragment}, it's `root` is equal to that `DocumentFragment`.\n\t *\n\t * @readonly\n\t * @type {module:engine/model/node~Node|module:engine/model/documentfragment~DocumentFragment}\n\t */\n\tget root() {\n\t\tlet root = this;\n\n\t\twhile ( root.parent ) {\n\t\t\troot = root.parent;\n\t\t}\n\n\t\treturn root;\n\t}\n\n\t/**\n\t * {@link module:engine/model/document~Document Document} that owns this node or `null` if the node has no parent or is inside\n\t * a {@link module:engine/model/documentfragment~DocumentFragment DocumentFragment}.\n\t *\n\t * @readonly\n\t * @type {module:engine/model/document~Document|null}\n\t */\n\tget document() {\n\t\t// This is a top element of a sub-tree.\n\t\tif ( this.root == this ) {\n\t\t\treturn null;\n\t\t}\n\n\t\t// Root may be `DocumentFragment` which does not have document property.\n\t\treturn this.root.document || null;\n\t}\n\n\t/**\n\t * Creates a copy of this node, that is a node with exactly same attributes, and returns it.\n\t *\n\t * @returns {module:engine/model/node~Node} Node with same attributes as this node.\n\t */\n\tclone() {\n\t\treturn new Node( this._attrs );\n\t}\n\n\t/**\n\t * Gets path to the node. The path is an array containing starting offsets of consecutive ancestors of this node,\n\t * beginning from {@link module:engine/model/node~Node#root root}, down to this node's starting offset. The path can be used to\n\t * create {@link module:engine/model/position~Position Position} instance.\n\t *\n\t *\t\tconst abc = new Text( 'abc' );\n\t *\t\tconst foo = new Text( 'foo' );\n\t *\t\tconst h1 = new Element( 'h1', null, new Text( 'header' ) );\n\t *\t\tconst p = new Element( 'p', null, [ abc, foo ] );\n\t *\t\tconst div = new Element( 'div', null, [ h1, p ] );\n\t *\t\tfoo.getPath(); // Returns [ 1, 3 ]. `foo` is in `p` which is in `div`. `p` starts at offset 1, while `foo` at 3.\n\t *\t\th1.getPath(); // Returns [ 0 ].\n\t *\t\tdiv.getPath(); // Returns [].\n\t *\n\t * @returns {Array.<Number>} The path.\n\t */\n\tgetPath() {\n\t\tconst path = [];\n\t\tlet node = this;\n\n\t\twhile ( node.parent ) {\n\t\t\tpath.unshift( node.startOffset );\n\t\t\tnode = node.parent;\n\t\t}\n\n\t\treturn path;\n\t}\n\n\t/**\n\t * Returns ancestors array of this node.\n\t *\n\t * @param {Object} options Options object.\n\t * @param {Boolean} [options.includeNode=false] When set to `true` this node will be also included in parent's array.\n\t * @param {Boolean} [options.parentFirst=false] When set to `true`, array will be sorted from node's parent to root element,\n\t * otherwise root element will be the first item in the array.\n\t * @returns {Array} Array with ancestors.\n\t */\n\tgetAncestors( options = { includeNode: false, parentFirst: false } ) {\n\t\tconst ancestors = [];\n\t\tlet parent = options.includeNode ? this : this.parent;\n\n\t\twhile ( parent ) {\n\t\t\tancestors[ options.parentFirst ? 'push' : 'unshift' ]( parent );\n\t\t\tparent = parent.parent;\n\t\t}\n\n\t\treturn ancestors;\n\t}\n\n\t/**\n\t * Removes this node from it's parent.\n\t */\n\tremove() {\n\t\tthis.parent.removeChildren( this.index );\n\t}\n\n\t/**\n\t * Checks if the node has an attribute with given key.\n\t *\n\t * @param {String} key Key of attribute to check.\n\t * @returns {Boolean} `true` if attribute with given key is set on node, `false` otherwise.\n\t */\n\thasAttribute( key ) {\n\t\treturn this._attrs.has( key );\n\t}\n\n\t/**\n\t * Gets an attribute value for given key or `undefined` if that attribute is not set on node.\n\t *\n\t * @param {String} key Key of attribute to look for.\n\t * @returns {*} Attribute value or `undefined`.\n\t */\n\tgetAttribute( key ) {\n\t\treturn this._attrs.get( key );\n\t}\n\n\t/**\n\t * Returns iterator that iterates over this node's attributes.\n\t *\n\t * Attributes are returned as arrays containing two items. First one is attribute key and second is attribute value.\n\t * This format is accepted by native `Map` object and also can be passed in `Node` constructor.\n\t *\n\t * @returns {Iterable.<*>}\n\t */\n\tgetAttributes() {\n\t\treturn this._attrs.entries();\n\t}\n\n\t/**\n\t * Returns iterator that iterates over this node's attribute keys.\n\t *\n\t * @returns {Iterator.<String>}\n\t */\n\tgetAttributeKeys() {\n\t\treturn this._attrs.keys();\n\t}\n\n\t/**\n\t * Sets attribute on the node. If attribute with the same key already is set, it's value is overwritten.\n\t *\n\t * @param {String} key Key of attribute to set.\n\t * @param {*} value Attribute value.\n\t */\n\tsetAttribute( key, value ) {\n\t\tthis._attrs.set( key, value );\n\t}\n\n\t/**\n\t * Removes all attributes from the node and sets given attributes.\n\t *\n\t * @param {Object} [attrs] Attributes to set. See {@link module:utils/tomap~toMap} for a list of accepted values.\n\t */\n\tsetAttributesTo( attrs ) {\n\t\tthis._attrs = toMap( attrs );\n\t}\n\n\t/**\n\t * Removes an attribute with given key from the node.\n\t *\n\t * @param {String} key Key of attribute to remove.\n\t * @returns {Boolean} `true` if the attribute was set on the element, `false` otherwise.\n\t */\n\tremoveAttribute( key ) {\n\t\treturn this._attrs.delete( key );\n\t}\n\n\t/**\n\t * Removes all attributes from the node.\n\t */\n\tclearAttributes() {\n\t\tthis._attrs.clear();\n\t}\n\n\t/**\n\t * Converts `Node` to plain object and returns it.\n\t *\n\t * @returns {Object} `Node` converted to plain object.\n\t */\n\ttoJSON() {\n\t\tlet json = {};\n\n\t\tif ( this._attrs.size ) {\n\t\t\tjson.attributes = [ ...this._attrs ];\n\t\t}\n\n\t\treturn json;\n\t}\n\n\t/**\n\t * Checks whether given model tree object is of given type.\n\t *\n\t * This method is useful when processing model tree objects that are of unknown type. For example, a function\n\t * may return {@link module:engine/model/documentfragment~DocumentFragment} or {@link module:engine/model/node~Node}\n\t * that can be either text node or element. This method can be used to check what kind of object is returned.\n\t *\n\t *\t\tobj.is( 'node' ); // true for any node, false for document fragment\n\t *\t\tobj.is( 'documentFragment' ); // true for document fragment, false for any node\n\t *\t\tobj.is( 'element' ); // true for any element, false for text node or document fragment\n\t *\t\tobj.is( 'element', 'paragraph' ); // true only for element which name is 'paragraph'\n\t *\t\tobj.is( 'paragraph' ); // shortcut for obj.is( 'element', 'paragraph' )\n\t *\t\tobj.is( 'text' ); // true for text node, false for element and document fragment\n\t *\t\tobj.is( 'textProxy' ); // true for text proxy object\n\t *\n\t * @method #is\n\t * @param {'element'|'rootElement'|'text'|'textProxy'|'documentFragment'} type\n\t * @returns {Boolean}\n\t */\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/node.js\n// module id = 56\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/selection\n */\n\nimport Position from './position';\nimport Element from './element';\nimport Range from './range';\nimport EmitterMixin from '@ckeditor/ckeditor5-utils/src/emittermixin';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\nimport toMap from '@ckeditor/ckeditor5-utils/src/tomap';\nimport mapsEqual from '@ckeditor/ckeditor5-utils/src/mapsequal';\n\n/**\n * `Selection` is a group of {@link module:engine/model/range~Range ranges} which has a direction specified by\n * {@link module:engine/model/selection~Selection#anchor anchor} and {@link module:engine/model/selection~Selection#focus focus}.\n * Additionally, `Selection` may have it's own attributes.\n */\nexport default class Selection {\n\t/**\n\t * Creates an empty selection.\n\t */\n\tconstructor() {\n\t\t/**\n\t\t * Specifies whether the last added range was added as a backward or forward range.\n\t\t *\n\t\t * @private\n\t\t * @member {Boolean}\n\t\t */\n\t\tthis._lastRangeBackward = false;\n\n\t\t/**\n\t\t * Stores selection ranges.\n\t\t *\n\t\t * @protected\n\t\t * @member {Array.<module:engine/model/range~Range>}\n\t\t */\n\t\tthis._ranges = [];\n\n\t\t/**\n\t\t * List of attributes set on current selection.\n\t\t *\n\t\t * @protected\n\t\t * @member {Map} module:engine/model/selection~Selection#_attrs\n\t\t */\n\t\tthis._attrs = new Map();\n\t}\n\n\t/**\n\t * Selection anchor. Anchor may be described as a position where the most recent part of the selection starts.\n\t * Together with {@link #focus} they define the direction of selection, which is important\n\t * when expanding/shrinking selection. Anchor is always {@link module:engine/model/range~Range#start start} or\n\t * {@link module:engine/model/range~Range#end end} position of the most recently added range.\n\t *\n\t * Is set to `null` if there are no ranges in selection.\n\t *\n\t * @see #focus\n\t * @readonly\n\t * @type {module:engine/model/position~Position|null}\n\t */\n\tget anchor() {\n\t\tif ( this._ranges.length > 0 ) {\n\t\t\tconst range = this._ranges[ this._ranges.length - 1 ];\n\n\t\t\treturn this._lastRangeBackward ? range.end : range.start;\n\t\t}\n\n\t\treturn null;\n\t}\n\n\t/**\n\t * Selection focus. Focus is a position where the selection ends.\n\t *\n\t * Is set to `null` if there are no ranges in selection.\n\t *\n\t * @see #anchor\n\t * @readonly\n\t * @type {module:engine/model/position~Position|null}\n\t */\n\tget focus() {\n\t\tif ( this._ranges.length > 0 ) {\n\t\t\tconst range = this._ranges[ this._ranges.length - 1 ];\n\n\t\t\treturn this._lastRangeBackward ? range.start : range.end;\n\t\t}\n\n\t\treturn null;\n\t}\n\n\t/**\n\t * Returns whether the selection is collapsed. Selection is collapsed when there is exactly one range which is\n\t * collapsed.\n\t *\n\t * @readonly\n\t * @type {Boolean}\n\t */\n\tget isCollapsed() {\n\t\tconst length = this._ranges.length;\n\n\t\tif ( length === 1 ) {\n\t\t\treturn this._ranges[ 0 ].isCollapsed;\n\t\t} else {\n\t\t\treturn false;\n\t\t}\n\t}\n\n\t/**\n\t * Returns number of ranges in selection.\n\t *\n\t * @type {Number}\n\t */\n\tget rangeCount() {\n\t\treturn this._ranges.length;\n\t}\n\n\t/**\n\t * Specifies whether the {@link #focus}\n\t * precedes {@link #anchor}.\n\t *\n\t * @type {Boolean}\n\t */\n\tget isBackward() {\n\t\treturn !this.isCollapsed && this._lastRangeBackward;\n\t}\n\n\t/**\n\t * Checks whether this selection is equal to given selection. Selections are equal if they have same directions,\n\t * same number of ranges and all ranges from one selection equal to a range from other selection.\n\t *\n\t * @param {module:engine/model/selection~Selection} otherSelection Selection to compare with.\n\t * @returns {Boolean} `true` if selections are equal, `false` otherwise.\n\t */\n\tisEqual( otherSelection ) {\n\t\tif ( this.rangeCount != otherSelection.rangeCount ) {\n\t\t\treturn false;\n\t\t} else if ( this.rangeCount === 0 ) {\n\t\t\treturn true;\n\t\t}\n\n\t\tif ( !this.anchor.isEqual( otherSelection.anchor ) || !this.focus.isEqual( otherSelection.focus ) ) {\n\t\t\treturn false;\n\t\t}\n\n\t\tfor ( let thisRange of this._ranges ) {\n\t\t\tlet found = false;\n\n\t\t\tfor ( let otherRange of otherSelection._ranges ) {\n\t\t\t\tif ( thisRange.isEqual( otherRange ) ) {\n\t\t\t\t\tfound = true;\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tif ( !found ) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t}\n\n\t\treturn true;\n\t}\n\n\t/**\n\t * Returns an iterator that iterates over copies of selection ranges.\n\t *\n\t * @returns {Iterator.<module:engine/model/range~Range>}\n\t */\n\t*getRanges() {\n\t\tfor ( let range of this._ranges ) {\n\t\t\tyield Range.createFromRange( range );\n\t\t}\n\t}\n\n\t/**\n\t * Returns a copy of the first range in the selection.\n\t * First range is the one which {@link module:engine/model/range~Range#start start} position\n\t * {@link module:engine/model/position~Position#isBefore is before} start position of all other ranges\n\t * (not to confuse with the first range added to the selection).\n\t *\n\t * Returns `null` if there are no ranges in selection.\n\t *\n\t * @returns {module:engine/model/range~Range|null}\n\t */\n\tgetFirstRange() {\n\t\tlet first = null;\n\n\t\tfor ( let range of this._ranges ) {\n\t\t\tif ( !first || range.start.isBefore( first.start ) ) {\n\t\t\t\tfirst = range;\n\t\t\t}\n\t\t}\n\n\t\treturn first ? Range.createFromRange( first ) : null;\n\t}\n\n\t/**\n\t * Returns a copy of the last range in the selection.\n\t * Last range is the one which {@link module:engine/model/range~Range#end end} position\n\t * {@link module:engine/model/position~Position#isAfter is after} end position of all other ranges (not to confuse with the range most\n\t * recently added to the selection).\n\t *\n\t * Returns `null` if there are no ranges in selection.\n\t *\n\t * @returns {module:engine/model/range~Range|null}\n\t */\n\tgetLastRange() {\n\t\tlet last = null;\n\n\t\tfor ( let range of this._ranges ) {\n\t\t\tif ( !last || range.end.isAfter( last.end ) ) {\n\t\t\t\tlast = range;\n\t\t\t}\n\t\t}\n\n\t\treturn last ? Range.createFromRange( last ) : null;\n\t}\n\n\t/**\n\t * Returns the first position in the selection.\n\t * First position is the position that {@link module:engine/model/position~Position#isBefore is before}\n\t * any other position in the selection.\n\t *\n\t * Returns `null` if there are no ranges in selection.\n\t *\n\t * @returns {module:engine/model/position~Position|null}\n\t */\n\tgetFirstPosition() {\n\t\tconst first = this.getFirstRange();\n\n\t\treturn first ? Position.createFromPosition( first.start ) : null;\n\t}\n\n\t/**\n\t * Returns the last position in the selection.\n\t * Last position is the position that {@link module:engine/model/position~Position#isAfter is after}\n\t * any other position in the selection.\n\t *\n\t * Returns `null` if there are no ranges in selection.\n\t *\n\t * @returns {module:engine/model/position~Position|null}\n\t */\n\tgetLastPosition() {\n\t\tconst lastRange = this.getLastRange();\n\n\t\treturn lastRange ? Position.createFromPosition( lastRange.end ) : null;\n\t}\n\n\t/**\n\t * Adds a range to this selection. Added range is copied. This means that passed range is not saved in `Selection`\n\t * instance and operating on it will not change `Selection` state.\n\t *\n\t * Accepts a flag describing in which way the selection is made - passed range might be selected from\n\t * {@link module:engine/model/range~Range#start start} to {@link module:engine/model/range~Range#end end}\n\t * or from {@link module:engine/model/range~Range#end end}\n\t * to {@link module:engine/model/range~Range#start start}.\n\t * The flag is used to set {@link #anchor} and\n\t * {@link #focus} properties.\n\t *\n\t * @fires change:range\n\t * @param {module:engine/model/range~Range} range Range to add.\n\t * @param {Boolean} [isBackward=false] Flag describing if added range was selected forward - from start to end (`false`)\n\t * or backward - from end to start (`true`).\n\t */\n\taddRange( range, isBackward = false ) {\n\t\tthis._pushRange( range );\n\t\tthis._lastRangeBackward = !!isBackward;\n\n\t\tthis.fire( 'change:range', { directChange: true } );\n\t}\n\n\t/**\n\t * Removes all ranges that were added to the selection.\n\t *\n\t * @fires change:range\n\t */\n\tremoveAllRanges() {\n\t\tif ( this._ranges.length > 0 ) {\n\t\t\tthis._removeAllRanges();\n\t\t\tthis.fire( 'change:range', { directChange: true } );\n\t\t}\n\t}\n\n\t/**\n\t * Replaces all ranges that were added to the selection with given array of ranges. Last range of the array\n\t * is treated like the last added range and is used to set {@link module:engine/model/selection~Selection#anchor} and\n\t * {@link module:engine/model/selection~Selection#focus}. Accepts a flag describing in which direction the selection is made\n\t * (see {@link module:engine/model/selection~Selection#addRange}).\n\t *\n\t * @fires change:range\n\t * @param {Iterable.<module:engine/model/range~Range>} newRanges Ranges to set.\n\t * @param {Boolean} [isLastBackward=false] Flag describing if last added range was selected forward - from start to end (`false`)\n\t * or backward - from end to start (`true`).\n\t */\n\tsetRanges( newRanges, isLastBackward = false ) {\n\t\tnewRanges = Array.from( newRanges );\n\n\t\t// Check whether there is any range in new ranges set that is different than all already added ranges.\n\t\tconst anyNewRange = newRanges.some( ( newRange ) => {\n\t\t\tif ( !( newRange instanceof Range ) ) {\n\t\t\t\tthrow new CKEditorError( 'model-selection-added-not-range: Trying to add an object that is not an instance of Range.' );\n\t\t\t}\n\n\t\t\treturn this._ranges.every( ( oldRange ) => {\n\t\t\t\treturn !oldRange.isEqual( newRange );\n\t\t\t} );\n\t\t} );\n\n\t\t// Don't do anything if nothing changed.\n\t\tif ( newRanges.length === this._ranges.length && !anyNewRange ) {\n\t\t\treturn;\n\t\t}\n\n\t\tthis._removeAllRanges();\n\n\t\tfor ( let range of newRanges ) {\n\t\t\tthis._pushRange( range );\n\t\t}\n\n\t\tthis._lastRangeBackward = !!isLastBackward;\n\n\t\tthis.fire( 'change:range', { directChange: true } );\n\t}\n\n\t/**\n\t * Sets this selection's ranges and direction to the ranges and direction of the given selection.\n\t *\n\t * @param {module:engine/model/selection~Selection} otherSelection\n\t */\n\tsetTo( otherSelection ) {\n\t\tthis.setRanges( otherSelection.getRanges(), otherSelection.isBackward );\n\t}\n\n\t/**\n\t * Sets collapsed selection in the specified location.\n\t *\n\t * The location can be specified in the same form as {@link module:engine/model/position~Position.createAt} parameters.\n\t *\n\t * @fires change:range\n\t * @param {module:engine/model/item~Item|module:engine/model/position~Position} itemOrPosition\n\t * @param {Number|'end'|'before'|'after'} [offset=0] Offset or one of the flags. Used only when\n\t * first parameter is a {@link module:engine/model/item~Item model item}.\n\t */\n\tcollapse( itemOrPosition, offset ) {\n\t\tconst pos = Position.createAt( itemOrPosition, offset );\n\t\tconst range = new Range( pos, pos );\n\n\t\tthis.setRanges( [ range ] );\n\t}\n\n\t/**\n\t * Collapses selection to the selection's {@link module:engine/model/selection~Selection#getFirstPosition first position}.\n\t * All ranges, besides the collapsed one, will be removed. Nothing will change if there are no ranges stored\n\t * inside selection.\n\t *\n\t * @fires change\n\t */\n\tcollapseToStart() {\n\t\tconst startPosition = this.getFirstPosition();\n\n\t\tif ( startPosition !== null ) {\n\t\t\tthis.setRanges( [ new Range( startPosition, startPosition ) ] );\n\t\t}\n\t}\n\n\t/**\n\t * Collapses selection to the selection's {@link module:engine/model/selection~Selection#getLastPosition last position}.\n\t * All ranges, besides the collapsed one, will be removed. Nothing will change if there are no ranges stored\n\t * inside selection.\n\t *\n\t * @fires change\n\t */\n\tcollapseToEnd() {\n\t\tconst endPosition = this.getLastPosition();\n\n\t\tif ( endPosition !== null ) {\n\t\t\tthis.setRanges( [ new Range( endPosition, endPosition ) ] );\n\t\t}\n\t}\n\n\t/**\n\t * Sets {@link module:engine/model/selection~Selection#focus} to the specified location.\n\t *\n\t * The location can be specified in the same form as {@link module:engine/model/position~Position.createAt} parameters.\n\t *\n\t * @fires change:range\n\t * @param {module:engine/model/item~Item|module:engine/model/position~Position} itemOrPosition\n\t * @param {Number|'end'|'before'|'after'} [offset=0] Offset or one of the flags. Used only when\n\t * first parameter is a {@link module:engine/model/item~Item model item}.\n\t */\n\tsetFocus( itemOrPosition, offset ) {\n\t\tif ( this.anchor === null ) {\n\t\t\t/**\n\t\t\t * Cannot set selection focus if there are no ranges in selection.\n\t\t\t *\n\t\t\t * @error model-selection-setFocus-no-ranges\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'model-selection-setFocus-no-ranges: Cannot set selection focus if there are no ranges in selection.' );\n\t\t}\n\n\t\tconst newFocus = Position.createAt( itemOrPosition, offset );\n\n\t\tif ( newFocus.compareWith( this.focus ) == 'same' ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst anchor = this.anchor;\n\n\t\tif ( this._ranges.length ) {\n\t\t\tthis._popRange();\n\t\t}\n\n\t\tif ( newFocus.compareWith( anchor ) == 'before' ) {\n\t\t\tthis.addRange( new Range( newFocus, anchor ), true );\n\t\t} else {\n\t\t\tthis.addRange( new Range( anchor, newFocus ) );\n\t\t}\n\t}\n\n\t/**\n\t * Gets an attribute value for given key or `undefined` if that attribute is not set on the selection.\n\t *\n\t * @param {String} key Key of attribute to look for.\n\t * @returns {*} Attribute value or `undefined`.\n\t */\n\tgetAttribute( key ) {\n\t\treturn this._attrs.get( key );\n\t}\n\n\t/**\n\t * Returns iterator that iterates over this selection's attributes.\n\t *\n\t * Attributes are returned as arrays containing two items. First one is attribute key and second is attribute value.\n\t * This format is accepted by native `Map` object and also can be passed in `Node` constructor.\n\t *\n\t * @returns {Iterable.<*>}\n\t */\n\tgetAttributes() {\n\t\treturn this._attrs.entries();\n\t}\n\n\t/**\n\t * Returns iterator that iterates over this selection's attribute keys.\n\t *\n\t * @returns {Iterator.<String>}\n\t */\n\tgetAttributeKeys() {\n\t\treturn this._attrs.keys();\n\t}\n\n\t/**\n\t * Checks if the selection has an attribute for given key.\n\t *\n\t * @param {String} key Key of attribute to check.\n\t * @returns {Boolean} `true` if attribute with given key is set on selection, `false` otherwise.\n\t */\n\thasAttribute( key ) {\n\t\treturn this._attrs.has( key );\n\t}\n\n\t/**\n\t * Removes all attributes from the selection.\n\t *\n\t * If there were any attributes in selection, fires the {@link #event:change} event with\n\t * removed attributes' keys.\n\t *\n\t * @fires change:attribute\n\t */\n\tclearAttributes() {\n\t\tif ( this._attrs.size > 0 ) {\n\t\t\tconst attributeKeys = Array.from( this._attrs.keys() );\n\t\t\tthis._attrs.clear();\n\n\t\t\tthis.fire( 'change:attribute', { attributeKeys, directChange: true } );\n\t\t}\n\t}\n\n\t/**\n\t * Removes an attribute with given key from the selection.\n\t *\n\t * If given attribute was set on the selection, fires the {@link #event:change} event with\n\t * removed attribute key.\n\t *\n\t * @fires change:attribute\n\t * @param {String} key Key of attribute to remove.\n\t */\n\tremoveAttribute( key ) {\n\t\tif ( this.hasAttribute( key ) ) {\n\t\t\tthis._attrs.delete( key );\n\n\t\t\tthis.fire( 'change:attribute', { attributeKeys: [ key ], directChange: true } );\n\t\t}\n\t}\n\n\t/**\n\t * Sets attribute on the selection. If attribute with the same key already is set, it's value is overwritten.\n\t *\n\t * If the attribute value has changed, fires the {@link #event:change} event with\n\t * the attribute key.\n\t *\n\t * @fires change:attribute\n\t * @param {String} key Key of attribute to set.\n\t * @param {*} value Attribute value.\n\t */\n\tsetAttribute( key, value ) {\n\t\tif ( this.getAttribute( key ) !== value ) {\n\t\t\tthis._attrs.set( key, value );\n\n\t\t\tthis.fire( 'change:attribute', { attributeKeys: [ key ], directChange: true } );\n\t\t}\n\t}\n\n\t/**\n\t * Removes all attributes from the selection and sets given attributes.\n\t *\n\t * If given set of attributes is different than set of attributes already added to selection, fires\n\t * {@link #event:change change event} with keys of attributes that changed.\n\t *\n\t * @fires event:change:attribute\n\t * @param {Iterable|Object} attrs Iterable object containing attributes to be set.\n\t */\n\tsetAttributesTo( attrs ) {\n\t\tattrs = toMap( attrs );\n\n\t\tif ( !mapsEqual( attrs, this._attrs ) ) {\n\t\t\t// Create a set from keys of old and new attributes.\n\t\t\tconst changed = new Set( Array.from( attrs.keys() ).concat( Array.from( this._attrs.keys() ) ) );\n\n\t\t\tfor ( let [ key, value ] of attrs ) {\n\t\t\t\t// If the attribute remains unchanged, remove it from changed set.\n\t\t\t\tif ( this._attrs.get( key ) === value ) {\n\t\t\t\t\tchanged.delete( key );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tthis._attrs = attrs;\n\n\t\t\tthis.fire( 'change:attribute', { attributeKeys: Array.from( changed ), directChange: true } );\n\t\t}\n\t}\n\n\t/**\n\t * Returns the selected element. {@link module:engine/model/element~Element Element} is considered as selected if there is only\n\t * one range in the selection, and that range contains exactly one element.\n\t * Returns `null` if there is no selected element.\n\t *\n\t * @returns {module:engine/model/element~Element|null}\n\t */\n\tgetSelectedElement() {\n\t\tif ( this.rangeCount !== 1 ) {\n\t\t\treturn null;\n\t\t}\n\n\t\tconst range = this.getFirstRange();\n\t\tconst nodeAfterStart = range.start.nodeAfter;\n\t\tconst nodeBeforeEnd = range.end.nodeBefore;\n\n\t\treturn ( nodeAfterStart instanceof Element && nodeAfterStart == nodeBeforeEnd ) ? nodeAfterStart : null;\n\t}\n\n\t/**\n\t * Gets elements of type \"block\" touched by the selection.\n\t *\n\t * This method's result can be used for example to apply block styling to all blocks covered by this selection.\n\t *\n\t * *Note:* `getSelectedBlocks` always returns the deepest block.\n\t *\n\t * In this case the function will return exactly all 3 paragraphs:\n\t *\n\t *\t\t<paragraph>[a</paragraph>\n\t *\t\t<quote>\n\t *\t\t\t<paragraph>b</paragraph>\n\t *\t\t</quote>\n\t *\t\t<paragraph>c]d</paragraph>\n\t *\n\t * In this case the paragraph will also be returned, despite the collapsed selection:\n\t *\n\t *\t\t<paragraph>[]a</paragraph>\n\t *\n\t * @returns {Iterator.<module:engine/model/element~Element>}\n\t */\n\t*getSelectedBlocks() {\n\t\tconst visited = new WeakSet();\n\n\t\tfor ( const range of this.getRanges() ) {\n\t\t\tconst startBlock = getParentBlock( range.start, visited );\n\n\t\t\tif ( startBlock ) {\n\t\t\t\tyield startBlock;\n\t\t\t}\n\n\t\t\tfor ( const value of range.getWalker() ) {\n\t\t\t\tif ( value.type == 'elementEnd' && isUnvisitedBlockContainer( value.item, visited ) ) {\n\t\t\t\t\tyield value.item;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tconst endBlock = getParentBlock( range.end, visited );\n\n\t\t\tif ( endBlock ) {\n\t\t\t\tyield endBlock;\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Creates and returns an instance of `Selection` that is a clone of given selection, meaning that it has same\n\t * ranges and same direction as this selection.\n\t *\n\t * @params {module:engine/model/selection~Selection} otherSelection Selection to be cloned.\n\t * @returns {module:engine/model/selection~Selection} `Selection` instance that is a clone of given selection.\n\t */\n\tstatic createFromSelection( otherSelection ) {\n\t\tconst selection = new this();\n\t\tselection.setTo( otherSelection );\n\n\t\treturn selection;\n\t}\n\n\t/**\n\t * Adds given range to internal {@link #_ranges ranges array}. Throws an error\n\t * if given range is intersecting with any range that is already stored in this selection.\n\t *\n\t * @protected\n\t * @param {module:engine/model/range~Range} range Range to add.\n\t */\n\t_pushRange( range ) {\n\t\tif ( !( range instanceof Range ) ) {\n\t\t\tthrow new CKEditorError( 'model-selection-added-not-range: Trying to add an object that is not an instance of Range.' );\n\t\t}\n\n\t\tthis._checkRange( range );\n\t\tthis._ranges.push( Range.createFromRange( range ) );\n\t}\n\n\t/**\n\t * Checks if given range intersects with ranges that are already in the selection. Throws an error if it does.\n\t *\n\t * @protected\n\t * @param {module:engine/model/range~Range} range Range to check.\n\t */\n\t_checkRange( range ) {\n\t\tfor ( let i = 0; i < this._ranges.length; i++ ) {\n\t\t\tif ( range.isIntersecting( this._ranges[ i ] ) ) {\n\t\t\t\t/**\n\t\t\t\t * Trying to add a range that intersects with another range from selection.\n\t\t\t\t *\n\t\t\t\t * @error selection-range-intersects\n\t\t\t\t * @param {module:engine/model/range~Range} addedRange Range that was added to the selection.\n\t\t\t\t * @param {module:engine/model/range~Range} intersectingRange Range from selection that intersects with `addedRange`.\n\t\t\t\t */\n\t\t\t\tthrow new CKEditorError(\n\t\t\t\t\t'model-selection-range-intersects: Trying to add a range that intersects with another range from selection.',\n\t\t\t\t\t{ addedRange: range, intersectingRange: this._ranges[ i ] }\n\t\t\t\t);\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Removes most recently added range from the selection.\n\t *\n\t * @protected\n\t */\n\t_popRange() {\n\t\tthis._ranges.pop();\n\t}\n\n\t/**\n\t * Deletes ranges from internal range array. Uses {@link #_popRange _popRange} to\n\t * ensure proper ranges removal.\n\t *\n\t * @private\n\t */\n\t_removeAllRanges() {\n\t\twhile ( this._ranges.length > 0 ) {\n\t\t\tthis._popRange();\n\t\t}\n\t}\n\n\t/**\n\t * @event change\n\t */\n\n\t/**\n\t * Fired whenever selection ranges are changed.\n\t *\n\t * @event change:range\n\t * @param {Boolean} directChange Specifies whether the range change was caused by direct usage of `Selection` API (`true`)\n\t * or by changes done to {@link module:engine/model/document~Document model document}\n\t * using {@link module:engine/model/batch~Batch Batch} API (`false`).\n\t */\n\n\t/**\n\t * Fired whenever selection attributes are changed.\n\t *\n\t * @event change:attribute\n\t * @param {Boolean} directChange Specifies whether the attributes changed by direct usage of the Selection API (`true`)\n\t * or by changes done to the {@link module:engine/model/document~Document model document}\n\t * using the {@link module:engine/model/batch~Batch Batch} API (`false`).\n\t * @param {Array.<String>} attributeKeys Array containing keys of attributes that changed.\n\t */\n}\n\nmix( Selection, EmitterMixin );\n\n// Checks whether the given element extends $block in the schema and has a parent (is not a root).\n// Marks it as already visited.\nfunction isUnvisitedBlockContainer( element, visited ) {\n\tif ( visited.has( element ) ) {\n\t\treturn false;\n\t}\n\n\tvisited.add( element );\n\n\t// TODO https://github.com/ckeditor/ckeditor5-engine/issues/532#issuecomment-278900072.\n\t// This should not be a `$block` check.\n\treturn element.document.schema.itemExtends( element.name, '$block' ) && element.parent;\n}\n\n// Finds the lowest element in position's ancestors which is a block.\n// Marks all ancestors as already visited to not include any of them later on.\nfunction getParentBlock( position, visited ) {\n\tconst ancestors = position.parent.getAncestors( { parentFirst: true, includeNode: true } );\n\tconst block = ancestors.find( ( element ) => isUnvisitedBlockContainer( element, visited ) );\n\n\t// Mark all ancestors of this position's parent, because find() might've stopped early and\n\t// the found block may be a child of another block.\n\tancestors.forEach( element => visited.add( element ) );\n\n\treturn block;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/selection.js\n// module id = 57\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/textproxy\n */\n\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/**\n * `TextProxy` represents a part of {@link module:engine/model/text~Text text node}.\n *\n * Since {@link module:engine/model/position~Position positions} can be placed between characters of a text node,\n * {@link module:engine/model/range~Range ranges} may contain only parts of text nodes. When {@link module:engine/model/range~Range#getItems\n * getting items}\n * contained in such range, we need to represent a part of that text node, since returning the whole text node would be incorrect.\n * `TextProxy` solves this issue.\n *\n * `TextProxy` has an API similar to {@link module:engine/model/text~Text Text} and allows to do most of the common tasks performed\n * on model nodes.\n *\n * **Note:** Some `TextProxy` instances may represent whole text node, not just a part of it.\n * See {@link module:engine/model/textproxy~TextProxy#isPartial}.\n *\n * **Note:** `TextProxy` is not an instance of {@link module:engine/model/node~Node node}. Keep this in mind when using it as a\n * parameter of methods.\n *\n * **Note:** `TextProxy` is a readonly interface. If you want to perform changes on model data represented by a `TextProxy`\n * use {@link module:engine/model/writer~writer model writer API}.\n *\n * **Note:** `TextProxy` instances are created on the fly, basing on the current state of model. Because of this, it is\n * highly unrecommended to store references to `TextProxy` instances. `TextProxy` instances are not refreshed when\n * model changes, so they might get invalidated. Instead, consider creating {@link module:engine/model/liveposition~LivePosition live\n * position}.\n *\n * `TextProxy` instances are created by {@link module:engine/model/treewalker~TreeWalker model tree walker}. You should not need to create\n * an instance of this class by your own.\n */\nexport default class TextProxy {\n\t/**\n\t * Creates a text proxy.\n\t *\n\t * @protected\n\t * @param {module:engine/model/text~Text} textNode Text node which part is represented by this text proxy.\n\t * @param {Number} offsetInText Offset in {@link module:engine/model/textproxy~TextProxy#textNode text node} from which the text proxy\n\t * starts.\n\t * @param {Number} length Text proxy length, that is how many text node's characters, starting from `offsetInText` it represents.\n\t * @constructor\n\t */\n\tconstructor( textNode, offsetInText, length ) {\n\t\t/**\n\t\t * Text node which part is represented by this text proxy.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/model/text~Text}\n\t\t */\n\t\tthis.textNode = textNode;\n\n\t\tif ( offsetInText < 0 || offsetInText > textNode.offsetSize ) {\n\t\t\t/**\n\t\t\t * Given offsetInText value is incorrect.\n\t\t\t *\n\t\t\t * @error model-textproxy-wrong-offsetintext\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'model-textproxy-wrong-offsetintext: Given offsetInText value is incorrect.' );\n\t\t}\n\n\t\tif ( length < 0 || offsetInText + length > textNode.offsetSize ) {\n\t\t\t/**\n\t\t\t * Given length value is incorrect.\n\t\t\t *\n\t\t\t * @error model-textproxy-wrong-length\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'model-textproxy-wrong-length: Given length value is incorrect.' );\n\t\t}\n\t\t/**\n\t\t * Text data represented by this text proxy.\n\t\t *\n\t\t * @readonly\n\t\t * @member {String}\n\t\t */\n\t\tthis.data = textNode.data.substring( offsetInText, offsetInText + length );\n\n\t\t/**\n\t\t * Offset in {@link module:engine/model/textproxy~TextProxy#textNode text node} from which the text proxy starts.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Number}\n\t\t */\n\t\tthis.offsetInText = offsetInText;\n\t}\n\n\t/**\n\t * Offset at which this text proxy starts in it's parent.\n\t *\n\t * @see module:engine/model/node~Node#startOffset\n\t * @readonly\n\t * @type {Number}\n\t */\n\tget startOffset() {\n\t\treturn this.textNode.startOffset !== null ? this.textNode.startOffset + this.offsetInText : null;\n\t}\n\n\t/**\n\t * Offset size of this text proxy. Equal to the number of characters represented by the text proxy.\n\t *\n\t * @see module:engine/model/node~Node#offsetSize\n\t * @readonly\n\t * @type {Number}\n\t */\n\tget offsetSize() {\n\t\treturn this.data.length;\n\t}\n\n\t/**\n\t * Offset at which this text proxy ends in it's parent.\n\t *\n\t * @see module:engine/model/node~Node#endOffset\n\t * @readonly\n\t * @type {Number}\n\t */\n\tget endOffset() {\n\t\treturn this.startOffset !== null ? this.startOffset + this.offsetSize : null;\n\t}\n\n\t/**\n\t * Flag indicating whether `TextProxy` instance covers only part of the original {@link module:engine/model/text~Text text node}\n\t * (`true`) or the whole text node (`false`).\n\t *\n\t * This is `false` when text proxy starts at the very beginning of {@link module:engine/model/textproxy~TextProxy#textNode textNode}\n\t * ({@link module:engine/model/textproxy~TextProxy#offsetInText offsetInText} equals `0`) and text proxy sizes is equal to\n\t * text node size.\n\t *\n\t * @readonly\n\t * @type {Boolean}\n\t */\n\tget isPartial() {\n\t\treturn this.offsetSize !== this.textNode.offsetSize;\n\t}\n\n\t/**\n\t * Parent of this text proxy, which is same as parent of text node represented by this text proxy.\n\t *\n\t * @readonly\n\t * @type {module:engine/model/element~Element|module:engine/model/documentfragment~DocumentFragment|null}\n\t */\n\tget parent() {\n\t\treturn this.textNode.parent;\n\t}\n\n\t/**\n\t * Root of this text proxy, which is same as root of text node represented by this text proxy.\n\t *\n\t * @readonly\n\t * @type {module:engine/model/node~Node|module:engine/model/documentfragment~DocumentFragment}\n\t */\n\tget root() {\n\t\treturn this.textNode.root;\n\t}\n\n\t/**\n\t * {@link module:engine/model/document~Document Document} that owns text node represented by this text proxy or `null` if the text node\n\t * has no parent or is inside a {@link module:engine/model/documentfragment~DocumentFragment DocumentFragment}.\n\t *\n\t * @readonly\n\t * @type {module:engine/model/document~Document|null}\n\t */\n\tget document() {\n\t\treturn this.textNode.document;\n\t}\n\n\t/**\n\t * Checks whether given model tree object is of given type.\n\t *\n\t * Read more in {@link module:engine/model/node~Node#is}.\n\t *\n\t * @param {String} type\n\t * @returns {Boolean}\n\t */\n\tis( type ) {\n\t\treturn type == 'textProxy';\n\t}\n\n\t/**\n\t * Gets path to this text proxy.\n\t *\n\t * @see module:engine/model/node~Node#getPath\n\t * @returns {Array.<Number>}\n\t */\n\tgetPath() {\n\t\tconst path = this.textNode.getPath();\n\n\t\tif ( path.length > 0 ) {\n\t\t\tpath[ path.length - 1 ] += this.offsetInText;\n\t\t}\n\n\t\treturn path;\n\t}\n\n\t/**\n\t * Returns ancestors array of this text proxy.\n\t *\n\t * @param {Object} options Options object.\n\t * @param {Boolean} [options.includeNode=false] When set to `true` this text proxy will be also included in parent's array.\n\t * @param {Boolean} [options.parentFirst=false] When set to `true`, array will be sorted from text proxy parent to root element,\n\t * otherwise root element will be the first item in the array.\n\t * @returns {Array} Array with ancestors.\n\t */\n\tgetAncestors( options = { includeNode: false, parentFirst: false } ) {\n\t\tconst ancestors = [];\n\t\tlet parent = options.includeNode ? this : this.parent;\n\n\t\twhile ( parent ) {\n\t\t\tancestors[ options.parentFirst ? 'push' : 'unshift' ]( parent );\n\t\t\tparent = parent.parent;\n\t\t}\n\n\t\treturn ancestors;\n\t}\n\n\t/**\n\t * Checks if this text proxy has an attribute for given key.\n\t *\n\t * @param {String} key Key of attribute to check.\n\t * @returns {Boolean} `true` if attribute with given key is set on text proxy, `false` otherwise.\n\t */\n\thasAttribute( key ) {\n\t\treturn this.textNode.hasAttribute( key );\n\t}\n\n\t/**\n\t * Gets an attribute value for given key or `undefined` if that attribute is not set on text proxy.\n\t *\n\t * @param {String} key Key of attribute to look for.\n\t * @returns {*} Attribute value or `undefined`.\n\t */\n\tgetAttribute( key ) {\n\t\treturn this.textNode.getAttribute( key );\n\t}\n\n\t/**\n\t * Returns iterator that iterates over this node's attributes. Attributes are returned as arrays containing two\n\t * items. First one is attribute key and second is attribute value.\n\t *\n\t * This format is accepted by native `Map` object and also can be passed in `Node` constructor.\n\t *\n\t * @returns {Iterable.<*>}\n\t */\n\tgetAttributes() {\n\t\treturn this.textNode.getAttributes();\n\t}\n\n\t/**\n\t * Returns iterator that iterates over this node's attribute keys.\n\t *\n\t * @returns {Iterator.<String>}\n\t */\n\tgetAttributeKeys() {\n\t\treturn this.textNode.getAttributeKeys();\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/textproxy.js\n// module id = 58\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/* globals window, Range, Text */\n\nimport { keyCodes } from '@ckeditor/ckeditor5-utils/src/keyboard';\n\n/**\n * Set of utils related to block and inline fillers handling.\n *\n * Browsers do not allow to put caret in elements which does not have height. Because of it, we need to fill all\n * empty elements which should be selectable with elements or characters called \"fillers\". Unfortunately there is no one\n * universal filler, this is why two types are uses:\n *\n * * Block filler is an element which fill block elements, like `<p>`. CKEditor uses `<br>` as a block filler during the editing,\n * as browsers do natively. So instead of an empty `<p>` there will be `<p><br></p>`. The advantage of block filler is that\n * it is transparent for the selection, so when the caret is before the `<br>` and user presses right arrow he will be\n * moved to the next paragraph, not after the `<br>`. The disadvantage is that it breaks a block, so it can not be used\n * in the middle of a line of text. The {@link module:engine/view/filler~BR_FILLER `<br>` filler} can be replaced with any other\n * character in the data output, for instance {@link module:engine/view/filler~NBSP_FILLER non-breaking space}.\n *\n * * Inline filler is a filler which does not break a line of text, so it can be used inside the text, for instance in the empty\n * `<b>` surrendered by text: `foo<b></b>bar`, if we want to put the caret there. CKEditor uses a sequence of the zero-width\n * spaces as an {@link module:engine/view/filler~INLINE_FILLER inline filler} having the predetermined\n * {@link module:engine/view/filler~INLINE_FILLER_LENGTH length}. A sequence is used, instead of a single character to\n * avoid treating random zero-width spaces as the inline filler. Disadvantage of the inline filler is that it is not\n * transparent for the selection. The arrow key moves the caret between zero-width spaces characters, so the additional\n * code is needed to handle the caret.\n *\n * Both inline and block fillers are handled by the {@link module:engine/view/renderer~Renderer renderer} and are not present in the\n * view.\n *\n * @module engine/view/filler\n */\n\n/**\n * `<br> filler creator. This is a function which creates `<br data-cke-filler=\"true\">` element.\n * It defines how the filler is created.\n *\n * @see module:engine/view/filler~NBSP_FILLER\n * @function\n */\nexport const BR_FILLER = ( domDocument ) => {\n\tconst fillerBr = domDocument.createElement( 'br' );\n\tfillerBr.dataset.ckeFiller = true;\n\n\treturn fillerBr;\n};\n\n/**\n * Non-breaking space filler creator. This is a function which creates `&nbsp;` text node.\n * It defines how the filler is created.\n *\n * @see module:engine/view/filler~BR_FILLER\n * @function\n */\nexport const NBSP_FILLER = ( domDocument ) => domDocument.createTextNode( '\\u00A0' );\n\n/**\n * Length of the {@link module:engine/view/filler~INLINE_FILLER INLINE_FILLER}.\n */\nexport const INLINE_FILLER_LENGTH = 7;\n\n/**\n * Inline filler which is sequence of the zero width spaces.\n */\nexport let INLINE_FILLER = '';\n\nfor ( let i = 0; i < INLINE_FILLER_LENGTH; i++ ) {\n\tINLINE_FILLER += '\\u200b';\n}\n\n/**\n * Checks if the node is a text node which starts with the {@link module:engine/view/filler~INLINE_FILLER inline filler}.\n *\n *\t\tstartsWithFiller( document.createTextNode( INLINE_FILLER ) ); // true\n *\t\tstartsWithFiller( document.createTextNode( INLINE_FILLER + 'foo' ) ); // true\n *\t\tstartsWithFiller( document.createTextNode( 'foo' ) ); // false\n *\t\tstartsWithFiller( document.createElement( 'p' ) ); // false\n *\n * @param {Node} domNode DOM node.\n * @returns {Boolean} True if the text node starts with the {@link module:engine/view/filler~INLINE_FILLER inline filler}.\n */\nexport function startsWithFiller( domNode ) {\n\treturn ( domNode instanceof Text ) && ( domNode.data.substr( 0, INLINE_FILLER_LENGTH ) === INLINE_FILLER );\n}\n\n/**\n * Checks if the text node contains only the {@link module:engine/view/filler~INLINE_FILLER inline filler}.\n *\n *\t\tisInlineFiller( document.createTextNode( INLINE_FILLER ) ); // true\n *\t\tisInlineFiller( document.createTextNode( INLINE_FILLER + 'foo' ) ); // false\n *\n * @param {Text} domText DOM text node.\n * @returns {Boolean} True if the text node contains only the {@link module:engine/view/filler~INLINE_FILLER inline filler}.\n */\nexport function isInlineFiller( domText ) {\n\treturn domText.data.length == INLINE_FILLER_LENGTH && startsWithFiller( domText );\n}\n\n/**\n * Get string data from the text node, removing an {@link module:engine/view/filler~INLINE_FILLER inline filler} from it,\n * if text node contains it.\n *\n *\t\tgetDataWithoutFiller( document.createTextNode( INLINE_FILLER + 'foo' ) ) == 'foo' // true\n *\t\tgetDataWithoutFiller( document.createTextNode( 'foo' ) ) == 'foo' // true\n *\n * @param {Text} domText DOM text node, possible with inline filler.\n * @returns {String} Data without filler.\n */\nexport function getDataWithoutFiller( domText ) {\n\tif ( startsWithFiller( domText ) ) {\n\t\treturn domText.data.slice( INLINE_FILLER_LENGTH );\n\t} else {\n\t\treturn domText.data;\n\t}\n}\n\n// Cache block fillers templates to improve performance.\nconst templateBlockFillers = new WeakMap();\n\n/**\n * Checks if the node is an instance of the block filler of the given type.\n *\n *\t\tconst brFillerInstance = BR_FILLER( document );\n *\t\tisBlockFiller( brFillerInstance, BR_FILLER ); // true\n *\n * @param {Node} domNode DOM node to check.\n * @param {Function} blockFiller Block filler creator.\n * @returns {Boolean} True if text node contains only {@link module:engine/view/filler~INLINE_FILLER inline filler}.\n */\nexport function isBlockFiller( domNode, blockFiller ) {\n\tlet templateBlockFiller = templateBlockFillers.get( blockFiller );\n\n\tif ( !templateBlockFiller ) {\n\t\ttemplateBlockFiller = blockFiller( window.document );\n\t\ttemplateBlockFillers.set( blockFiller, templateBlockFiller );\n\t}\n\n\treturn domNode.isEqualNode( templateBlockFiller );\n}\n\n/**\n * Assign key observer which move cursor from the end of the inline filler to the begging of it when\n * the left arrow is pressed, so the filler does not break navigation.\n *\n * @param {module:engine/view/document~Document} document Document instance we should inject quirks handling on.\n */\nexport function injectQuirksHandling( document ) {\n\tdocument.on( 'keydown', jumpOverInlineFiller );\n}\n\n// Move cursor from the end of the inline filler to the begging of it when, so the filler does not break navigation.\nfunction jumpOverInlineFiller( evt, data ) {\n\tif ( data.keyCode == keyCodes.arrowleft ) {\n\t\tconst domSelection = data.domTarget.ownerDocument.defaultView.getSelection();\n\n\t\tif ( domSelection.rangeCount == 1 && domSelection.getRangeAt( 0 ).collapsed ) {\n\t\t\tconst domParent = domSelection.getRangeAt( 0 ).startContainer;\n\t\t\tconst domOffset = domSelection.getRangeAt( 0 ).startOffset;\n\n\t\t\tif ( startsWithFiller( domParent ) && domOffset <= INLINE_FILLER_LENGTH ) {\n\t\t\t\tconst domRange = new Range();\n\t\t\t\tdomRange.setStart( domParent, 0 );\n\t\t\t\tdomRange.collapse( true );\n\t\t\t\tdomSelection.removeAllRanges();\n\t\t\t\tdomSelection.addRange( domRange );\n\t\t\t}\n\t\t}\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/view/filler.js\n// module id = 59\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/observer/domeventobserver\n */\n\nimport Observer from './observer';\nimport DomEventData from './domeventdata';\n\n/**\n * Base class for DOM event observers. This class handles\n * {@link module:engine/view/observer/observer~Observer#observe adding} listeners to DOM elements,\n * {@link module:engine/view/observer/observer~Observer#disable disabling} and\n * {@link module:engine/view/observer/observer~Observer#enable re-enabling} events.\n * Child class needs to define\n * {@link module:engine/view/observer/domeventobserver~DomEventObserver#domEventType DOM event type} and\n * {@link module:engine/view/observer/domeventobserver~DomEventObserver#onDomEvent callback}.\n *\n * For instance:\n *\n *\t\tclass ClickObserver extends DomEventObserver {\n *\t\t\t// It can also be defined as a normal property in the constructor.\n *\t\t\tget domEventType() {\n *\t\t\t\treturn 'click';\n *\t\t\t}\n *\n *\t\t\tonDomEvent( domEvent ) {\n *\t\t\t\tthis.fire( 'click', domEvent );\n *\t\t\t}\n *\t\t}\n *\n * @extends module:engine/view/observer/observer~Observer\n */\nexport default class DomEventObserver extends Observer {\n\t/**\n\t * Type of the DOM event the observer should listen on. Array of types can be defined\n\t * if the obsever should listen to multiple DOM events.\n\t *\n\t * @readonly\n\t * @member {String|Array.<String>} #domEventType\n\t */\n\n\t/**\n\t * Callback which should be called when the DOM event occurred. Note that the callback will not be called if\n\t * observer {@link #isEnabled is not enabled}.\n\t *\n\t * @see #domEventType\n\t * @abstract\n\t * @method #onDomEvent\n\t */\n\n\t/**\n\t * @inheritDoc\n\t */\n\tconstructor( document ) {\n\t\tsuper( document );\n\n\t\t/**\n\t\t * If set to `true` DOM events will be listened on the capturing phase.\n\t\t * Default value is `false`.\n\t\t *\n\t\t * @member {Boolean}\n\t\t */\n\t\tthis.useCapture = false;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tobserve( domElement ) {\n\t\tconst types = typeof this.domEventType == 'string' ? [ this.domEventType ] : this.domEventType;\n\n\t\ttypes.forEach( type => {\n\t\t\tthis.listenTo( domElement, type, ( eventInfo, domEvent ) => {\n\t\t\t\tif ( this.isEnabled ) {\n\t\t\t\t\tthis.onDomEvent( domEvent );\n\t\t\t\t}\n\t\t\t}, { useCapture: this.useCapture } );\n\t\t} );\n\t}\n\n\t/**\n\t * Calls `Document#fire()` if observer {@link #isEnabled is enabled}.\n\t *\n\t * @see module:utils/emittermixin~EmitterMixin#fire\n\t * @param {String} eventType The event type (name).\n\t * @param {Event} domEvent The DOM event.\n\t * @param {Object} [additionalData] The additional data which should extend the\n\t * {@link module:engine/view/observer/domeventdata~DomEventData event data} object.\n\t */\n\tfire( eventType, domEvent, additionalData ) {\n\t\tif ( this.isEnabled ) {\n\t\t\tthis.document.fire( eventType, new DomEventData( this.document, domEvent, additionalData ) );\n\t\t}\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/view/observer/domeventobserver.js\n// module id = 60\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/selection\n */\n\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\nimport Range from './range';\nimport Position from './position';\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\nimport EmitterMixin from '@ckeditor/ckeditor5-utils/src/emittermixin';\nimport Element from './element';\n\n/**\n * Class representing selection in tree view.\n *\n * Selection can consist of {@link module:engine/view/range~Range ranges} that can be added using\n * {@link module:engine/view/selection~Selection#addRange addRange}\n * and {@link module:engine/view/selection~Selection#setRanges setRanges} methods.\n * Both methods create copies of provided ranges and store those copies internally. Further modifications to passed\n * ranges will not change selection's state.\n * Selection's ranges can be obtained via {@link module:engine/view/selection~Selection#getRanges getRanges},\n * {@link module:engine/view/selection~Selection#getFirstRange getFirstRange}\n * and {@link module:engine/view/selection~Selection#getLastRange getLastRange}\n * methods, which return copies of ranges stored inside selection. Modifications made on these copies will not change\n * selection's state. Similar situation occurs when getting {@link module:engine/view/selection~Selection#anchor anchor},\n * {@link module:engine/view/selection~Selection#focus focus}, {@link module:engine/view/selection~Selection#getFirstPosition first} and\n * {@link module:engine/view/selection~Selection#getLastPosition last} positions - all will return copies of requested positions.\n */\nexport default class Selection {\n\t/**\n\t * Creates new selection instance.\n\t */\n\tconstructor() {\n\t\t/**\n\t\t * Stores all ranges that are selected.\n\t\t *\n\t\t * @protected\n\t\t * @member {Array.<module:engine/view/range~Range>}\n\t\t */\n\t\tthis._ranges = [];\n\n\t\t/**\n\t\t * Specifies whether the last added range was added as a backward or forward range.\n\t\t *\n\t\t * @protected\n\t\t * @member {Boolean}\n\t\t */\n\t\tthis._lastRangeBackward = false;\n\n\t\t/**\n\t\t * Specifies whether selection instance is fake.\n\t\t *\n\t\t * @private\n\t\t * @member {Boolean}\n\t\t */\n\t\tthis._isFake = false;\n\n\t\t/**\n\t\t * Fake selection's label.\n\t\t *\n\t\t * @private\n\t\t * @member {String}\n\t\t */\n\t\tthis._fakeSelectionLabel = '';\n\t}\n\n\t/**\n\t * Sets this selection instance to be marked as `fake`. A fake selection does not render as browser native selection\n\t * over selected elements and is hidden to the user. This way, no native selection UI artifacts are displayed to\n\t * the user and selection over elements can be represented in other way, for example by applying proper CSS class.\n\t *\n\t * Additionally fake's selection label can be provided. It will be used to describe fake selection in DOM (and be\n\t * properly handled by screen readers).\n\t *\n\t * @fires change\n\t * @param {Boolean} [value=true] If set to true selection will be marked as `fake`.\n\t * @param {Object} [options] Additional options.\n\t * @param {String} [options.label=''] Fake selection label.\n\t */\n\tsetFake( value = true, options = {} ) {\n\t\tthis._isFake = value;\n\t\tthis._fakeSelectionLabel = value ? options.label || '' : '';\n\n\t\tthis.fire( 'change' );\n\t}\n\n\t/**\n\t * Returns true if selection instance is marked as `fake`.\n\t *\n\t * @see #setFake\n\t * @returns {Boolean}\n\t */\n\tget isFake() {\n\t\treturn this._isFake;\n\t}\n\n\t/**\n\t * Returns fake selection label.\n\t *\n\t * @see #setFake\n\t * @returns {String}\n\t */\n\tget fakeSelectionLabel() {\n\t\treturn this._fakeSelectionLabel;\n\t}\n\n\t/**\n\t * Selection anchor. Anchor may be described as a position where the selection starts. Together with\n\t * {@link #focus focus} they define the direction of selection, which is important\n\t * when expanding/shrinking selection. Anchor is always the start or end of the most recent added range.\n\t * It may be a bit unintuitive when there are multiple ranges in selection.\n\t *\n\t * @see #focus\n\t * @type {module:engine/view/position~Position}\n\t */\n\tget anchor() {\n\t\tif ( !this._ranges.length ) {\n\t\t\treturn null;\n\t\t}\n\t\tconst range = this._ranges[ this._ranges.length - 1 ];\n\t\tconst anchor = this._lastRangeBackward ? range.end : range.start;\n\n\t\treturn Position.createFromPosition( anchor );\n\t}\n\n\t/**\n\t * Selection focus. Focus is a position where the selection ends.\n\t *\n\t * @see #anchor\n\t * @type {module:engine/view/position~Position}\n\t */\n\tget focus() {\n\t\tif ( !this._ranges.length ) {\n\t\t\treturn null;\n\t\t}\n\t\tconst range = this._ranges[ this._ranges.length - 1 ];\n\t\tconst focus = this._lastRangeBackward ? range.start : range.end;\n\n\t\treturn Position.createFromPosition( focus );\n\t}\n\n\t/**\n\t * Returns whether the selection is collapsed. Selection is collapsed when there is exactly one range which is\n\t * collapsed.\n\t *\n\t * @type {Boolean}\n\t */\n\tget isCollapsed() {\n\t\treturn this.rangeCount === 1 && this._ranges[ 0 ].isCollapsed;\n\t}\n\n\t/**\n\t * Returns number of ranges in selection.\n\t *\n\t * @type {Number}\n     */\n\tget rangeCount() {\n\t\treturn this._ranges.length;\n\t}\n\n\t/**\n\t * Specifies whether the {@link #focus} precedes {@link #anchor}.\n\t *\n\t * @type {Boolean}\n\t */\n\tget isBackward() {\n\t\treturn !this.isCollapsed && this._lastRangeBackward;\n\t}\n\n\t/**\n\t * {@link module:engine/view/editableelement~EditableElement EditableElement} instance that contains this selection, or `null`\n\t * if the selection is not inside an editable element.\n\t *\n\t * @type {module:engine/view/editableelement~EditableElement|null}\n\t */\n\tget editableElement() {\n\t\tif ( this.anchor ) {\n\t\t\treturn this.anchor.editableElement;\n\t\t}\n\n\t\treturn null;\n\t}\n\n\t/**\n\t * Adds a range to the selection. Added range is copied. This means that passed range is not saved in the\n\t * selection instance and you can safely operate on it.\n\t *\n\t * Accepts a flag describing in which way the selection is made - passed range might be selected from\n\t * {@link module:engine/view/range~Range#start start} to {@link module:engine/view/range~Range#end end}\n\t * or from {@link module:engine/view/range~Range#end end} to {@link module:engine/view/range~Range#start start}.\n\t * The flag is used to set {@link #anchor anchor} and {@link #focus focus} properties.\n\t *\n\t * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-selection-range-intersects` if added range intersects\n\t * with ranges already stored in Selection instance.\n\t *\n\t * @fires change\n\t * @param {module:engine/view/range~Range} range\n\t */\n\taddRange( range, isBackward ) {\n\t\tif ( !( range instanceof Range ) ) {\n\t\t\tthrow new CKEditorError( 'view-selection-invalid-range: Invalid Range.' );\n\t\t}\n\n\t\tthis._pushRange( range );\n\t\tthis._lastRangeBackward = !!isBackward;\n\t\tthis.fire( 'change' );\n\t}\n\n\t/**\n\t * Returns an iterator that contains copies of all ranges added to the selection.\n\t *\n\t * @returns {Iterator.<module:engine/view/range~Range>}\n\t */\n\t*getRanges() {\n\t\tfor ( let range of this._ranges ) {\n\t\t\tyield Range.createFromRange( range );\n\t\t}\n\t}\n\n\t/**\n\t * Returns copy of the first range in the selection. First range is the one which\n\t * {@link module:engine/view/range~Range#start start} position {@link module:engine/view/position~Position#isBefore is before} start\n\t * position of all other ranges (not to confuse with the first range added to the selection).\n\t * Returns `null` if no ranges are added to selection.\n\t *\n\t * @returns {module:engine/view/range~Range|null}\n\t */\n\tgetFirstRange() {\n\t\tlet first = null;\n\n\t\tfor ( let range of this._ranges ) {\n\t\t\tif ( !first || range.start.isBefore( first.start ) ) {\n\t\t\t\tfirst = range;\n\t\t\t}\n\t\t}\n\n\t\treturn first ? Range.createFromRange( first ) : null;\n\t}\n\n\t/**\n\t * Returns copy of the last range in the selection. Last range is the one which {@link module:engine/view/range~Range#end end}\n\t * position {@link module:engine/view/position~Position#isAfter is after} end position of all other ranges (not to confuse\n\t * with the last range added to the selection). Returns `null` if no ranges are added to selection.\n\t *\n\t * @returns {module:engine/view/range~Range|null}\n\t */\n\tgetLastRange() {\n\t\tlet last = null;\n\n\t\tfor ( let range of this._ranges ) {\n\t\t\tif ( !last || range.end.isAfter( last.end ) ) {\n\t\t\t\tlast = range;\n\t\t\t}\n\t\t}\n\n\t\treturn last ? Range.createFromRange( last ) : null;\n\t}\n\n\t/**\n\t * Returns copy of the first position in the selection. First position is the position that\n\t * {@link module:engine/view/position~Position#isBefore is before} any other position in the selection ranges.\n\t * Returns `null` if no ranges are added to selection.\n\t *\n\t * @returns {module:engine/view/position~Position|null}\n\t */\n\tgetFirstPosition() {\n\t\tconst firstRange = this.getFirstRange();\n\n\t\treturn firstRange ? Position.createFromPosition( firstRange.start ) : null;\n\t}\n\n\t/**\n\t * Returns copy of the last position in the selection. Last position is the position that\n\t * {@link module:engine/view/position~Position#isAfter is after} any other position in the selection ranges.\n\t * Returns `null` if no ranges are added to selection.\n\t *\n\t * @returns {module:engine/view/position~Position|null}\n\t */\n\tgetLastPosition() {\n\t\tconst lastRange = this.getLastRange();\n\n\t\treturn lastRange ? Position.createFromPosition( lastRange.end ) : null;\n\t}\n\n\t/**\n\t * Checks whether, this selection is equal to given selection. Selections are equal if they have same directions,\n\t * same number of ranges and all ranges from one selection equal to a range from other selection.\n\t *\n\t * @param {module:engine/view/selection~Selection} otherSelection Selection to compare with.\n\t * @returns {Boolean} `true` if selections are equal, `false` otherwise.\n\t */\n\tisEqual( otherSelection ) {\n\t\tif ( this.isFake != otherSelection.isFake ) {\n\t\t\treturn false;\n\t\t}\n\n\t\tif ( this.isFake && this.fakeSelectionLabel != otherSelection.fakeSelectionLabel ) {\n\t\t\treturn false;\n\t\t}\n\n\t\tif ( this.rangeCount != otherSelection.rangeCount ) {\n\t\t\treturn false;\n\t\t} else if ( this.rangeCount === 0 ) {\n\t\t\treturn true;\n\t\t}\n\n\t\tif ( !this.anchor.isEqual( otherSelection.anchor ) || !this.focus.isEqual( otherSelection.focus ) ) {\n\t\t\treturn false;\n\t\t}\n\n\t\tfor ( let thisRange of this._ranges ) {\n\t\t\tlet found = false;\n\n\t\t\tfor ( let otherRange of otherSelection._ranges ) {\n\t\t\t\tif ( thisRange.isEqual( otherRange ) ) {\n\t\t\t\t\tfound = true;\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tif ( !found ) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t}\n\n\t\treturn true;\n\t}\n\n\t/**\n\t * Removes all ranges that were added to the selection.\n\t *\n\t * @fires change\n\t */\n\tremoveAllRanges() {\n\t\tif ( this._ranges.length ) {\n\t\t\tthis._ranges = [];\n\t\t\tthis.fire( 'change' );\n\t\t}\n\t}\n\n\t/**\n\t * Replaces all ranges that were added to the selection with given array of ranges. Last range of the array\n\t * is treated like the last added range and is used to set {@link #anchor anchor} and {@link #focus focus}.\n\t * Accepts a flag describing in which way the selection is made (see {@link #addRange addRange}).\n\t *\n\t * @fires change\n\t * @param {Array.<module:engine/view/range~Range>} newRanges Array of ranges to set.\n\t * @param {Boolean} [isLastBackward] Flag describing if last added range was selected forward - from start to end\n\t * (`false`) or backward - from end to start (`true`). Defaults to `false`.\n\t */\n\tsetRanges( newRanges, isLastBackward ) {\n\t\tthis._ranges = [];\n\n\t\tfor ( let range of newRanges ) {\n\t\t\tif ( !( range instanceof Range ) ) {\n\t\t\t\tthrow new CKEditorError( 'view-selection-invalid-range: Invalid Range.' );\n\t\t\t}\n\n\t\t\tthis._pushRange( range );\n\t\t}\n\n\t\tthis._lastRangeBackward = !!isLastBackward;\n\t\tthis.fire( 'change' );\n\t}\n\n\t/**\n\t * Sets this selection's ranges and direction to the ranges and direction of the given selection.\n\t *\n\t * @param {module:engine/view/selection~Selection} otherSelection\n\t */\n\tsetTo( otherSelection ) {\n\t\tthis._isFake = otherSelection._isFake;\n\t\tthis._fakeSelectionLabel = otherSelection._fakeSelectionLabel;\n\n\t\tthis.setRanges( otherSelection.getRanges(), otherSelection.isBackward );\n\t}\n\n\t/**\n\t * Sets collapsed selection in the specified location.\n\t *\n\t * The location can be specified in the same form as {@link module:engine/view/position~Position.createAt} parameters.\n\t *\n\t * @fires change\n\t * @param {module:engine/view/item~Item|module:engine/view/position~Position} itemOrPosition\n\t * @param {Number|'end'|'before'|'after'} [offset=0] Offset or one of the flags. Used only when\n\t * first parameter is a {@link module:engine/view/item~Item view item}.\n\t */\n\tcollapse( itemOrPosition, offset ) {\n\t\tconst pos = Position.createAt( itemOrPosition, offset );\n\t\tconst range = new Range( pos, pos );\n\n\t\tthis.setRanges( [ range ] );\n\t}\n\n\t/**\n\t * Collapses selection to the selection's {@link #getFirstPosition first position}.\n\t * All ranges, besides the collapsed one, will be removed. Nothing will change if there are no ranges stored\n\t * inside selection.\n\t *\n\t * @fires change\n\t */\n\tcollapseToStart() {\n\t\tconst startPosition = this.getFirstPosition();\n\n\t\tif ( startPosition !== null ) {\n\t\t\tthis.setRanges( [ new Range( startPosition, startPosition ) ] );\n\t\t}\n\t}\n\n\t/**\n\t * Collapses selection to the selection's {@link #getLastPosition last position}.\n\t * All ranges, besides the collapsed one, will be removed. Nothing will change if there are no ranges stored\n\t * inside selection.\n\t *\n\t * @fires change\n\t */\n\tcollapseToEnd() {\n\t\tconst endPosition = this.getLastPosition();\n\n\t\tif ( endPosition !== null ) {\n\t\t\tthis.setRanges( [ new Range( endPosition, endPosition ) ] );\n\t\t}\n\t}\n\n\t/**\n\t * Sets {@link #focus} to the specified location.\n\t *\n\t * The location can be specified in the same form as {@link module:engine/view/position~Position.createAt} parameters.\n\t *\n\t * @fires change:range\n\t * @param {module:engine/view/item~Item|module:engine/view/position~Position} itemOrPosition\n\t * @param {Number|'end'|'before'|'after'} [offset=0] Offset or one of the flags. Used only when\n\t * first parameter is a {@link module:engine/view/item~Item view item}.\n\t */\n\tsetFocus( itemOrPosition, offset ) {\n\t\tif ( this.anchor === null ) {\n\t\t\t/**\n\t\t\t * Cannot set selection focus if there are no ranges in selection.\n\t\t\t *\n\t\t\t * @error view-selection-setFocus-no-ranges\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'view-selection-setFocus-no-ranges: Cannot set selection focus if there are no ranges in selection.' );\n\t\t}\n\n\t\tconst newFocus = Position.createAt( itemOrPosition, offset );\n\n\t\tif ( newFocus.compareWith( this.focus ) == 'same' ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst anchor = this.anchor;\n\n\t\tthis._ranges.pop();\n\n\t\tif ( newFocus.compareWith( anchor ) == 'before' ) {\n\t\t\tthis.addRange( new Range( newFocus, anchor ), true );\n\t\t} else {\n\t\t\tthis.addRange( new Range( anchor, newFocus ) );\n\t\t}\n\t}\n\n\t/**\n\t * Returns the selected element. {@link module:engine/view/element~Element Element} is considered as selected if there is only\n\t * one range in the selection, and that range contains exactly one element.\n\t * Returns `null` if there is no selected element.\n\t *\n\t * @returns {module:engine/view/element~Element|null}\n\t */\n\tgetSelectedElement() {\n\t\tif ( this.rangeCount !== 1 ) {\n\t\t\treturn null;\n\t\t}\n\n\t\tconst range = this.getFirstRange();\n\t\tconst nodeAfterStart = range.start.nodeAfter;\n\t\tconst nodeBeforeEnd = range.end.nodeBefore;\n\n\t\treturn ( nodeAfterStart instanceof Element && nodeAfterStart == nodeBeforeEnd ) ? nodeAfterStart : null;\n\t}\n\n\t/**\n\t * Creates and returns an instance of `Selection` that is a clone of given selection, meaning that it has same\n\t * ranges and same direction as this selection.\n\t *\n\t * @params {module:engine/view/selection~Selection} otherSelection Selection to be cloned.\n\t * @returns {module:engine/view/selection~Selection} `Selection` instance that is a clone of given selection.\n\t */\n\tstatic createFromSelection( otherSelection ) {\n\t\tconst selection = new Selection();\n\t\tselection.setTo( otherSelection );\n\n\t\treturn selection;\n\t}\n\n\t/**\n\t * Adds range to selection - creates copy of given range so it can be safely used and modified.\n\t *\n\t * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-selection-range-intersects` if added range intersects\n\t * with ranges already stored in selection instance.\n\t *\n\t * @private\n\t * @param {module:engine/view/range~Range} range\n\t */\n\t_pushRange( range ) {\n\t\tfor ( let storedRange of this._ranges ) {\n\t\t\tif ( range.isIntersecting( storedRange ) ) {\n\t\t\t\t/**\n\t\t\t\t * Trying to add a range that intersects with another range from selection.\n\t\t\t\t *\n\t\t\t\t * @error selection-range-intersects\n\t\t\t\t * @param {module:engine/view/range~Range} addedRange Range that was added to the selection.\n\t\t\t\t * @param {module:engine/view/range~Range} intersectingRange Range from selection that intersects with `addedRange`.\n\t\t\t\t */\n\t\t\t\tthrow new CKEditorError(\n\t\t\t\t\t'view-selection-range-intersects: Trying to add a range that intersects with another range from selection.',\n\t\t\t\t\t{ addedRange: range, intersectingRange: storedRange }\n\t\t\t\t);\n\t\t\t}\n\t\t}\n\n\t\tthis._ranges.push( Range.createFromRange( range ) );\n\t}\n}\n\nmix( Selection, EmitterMixin );\n\n/**\n * Fired whenever selection ranges are changed through {@link ~Selection Selection API}.\n *\n * @event change\n */\n\n/**\n * @event change:range\n */\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/view/selection.js\n// module id = 61\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/comparearrays\n */\n\n/**\n * Compares how given arrays relate to each other. One array can be: same as another array, prefix of another array\n * or completely different. If arrays are different, first index at which they differ is returned. Otherwise,\n * a flag specifying the relation is returned. Flags are negative numbers, so whenever a number >= 0 is returned\n * it means that arrays differ.\n *\n *\t\tcompareArrays( [ 0, 2 ], [ 0, 2 ] );\t\t// 'same'\n *\t\tcompareArrays( [ 0, 2 ], [ 0, 2, 1 ] );\t\t// 'prefix'\n *\t\tcompareArrays( [ 0, 2 ], [ 0 ] );\t\t\t// 'extension'\n *\t\tcompareArrays( [ 0, 2 ], [ 1, 2 ] );\t\t// 0\n *\t\tcompareArrays( [ 0, 2 ], [ 0, 1 ] );\t\t// 1\n *\n * @param {Array} a Array that is compared.\n * @param {Array} b Array to compare with.\n * @returns {module:utils/comparearrays~ArrayRelation} How array `a` is related to `b`.\n */\nexport default function compareArrays( a, b ) {\n\tconst minLen = Math.min( a.length, b.length );\n\n\tfor ( let i = 0; i < minLen; i++ ) {\n\t\tif ( a[ i ] != b[ i ] ) {\n\t\t\t// The arrays are different.\n\t\t\treturn i;\n\t\t}\n\t}\n\n\t// Both arrays were same at all points.\n\tif ( a.length == b.length ) {\n\t\t// If their length is also same, they are the same.\n\t\treturn 'same';\n\t} else if ( a.length < b.length ) {\n\t\t// Compared array is shorter so it is a prefix of the other array.\n\t\treturn 'prefix';\n\t} else {\n\t\t// Compared array is longer so it is an extension of the other array.\n\t\treturn 'extension';\n\t}\n}\n\n/**\n * @typedef {'extension'|'same'|'prefix'} module:utils/comparearrays~ArrayRelation\n */\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/comparearrays.js\n// module id = 62\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/* globals window, document */\n\n/**\n * @module utils/dom/global\n */\n\n/**\n * A helper (module) giving an access to the global DOM objects such as `window` and\n * `document`. Accessing these objects using this helper allows easy and bulletproof\n * testing, i.e. stubbing native properties:\n *\n *\t\timport global from 'ckeditor5/utils/dom/global.js';\n *\n *\t\t// This stub will work for any code using global module.\n *\t\ttestUtils.sinon.stub( global, 'window', {\n *\t\t\tinnerWidth: 10000\n *\t\t} );\n *\n *\t\tconsole.log( global.window.innerWidth );\n */\nexport default { window, document };\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/dom/global.js\n// module id = 63\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/first\n */\n\n/**\n * Returns first item of the given `iterable`.\n *\n * @param {Iterable.<*>} iterable\n * @returns {*}\n */\nexport default function first( iterable ) {\n\tconst iteratorItem = iterable.next();\n\n\tif ( iteratorItem.done ) {\n\t\treturn null;\n\t}\n\n\treturn iteratorItem.value;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/first.js\n// module id = 64\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/* global setTimeout, clearTimeout */\n\n/**\n * @module utils/focustracker\n */\n\nimport DomEmitterMixin from './dom/emittermixin';\nimport ObservableMixin from './observablemixin';\nimport CKEditorError from './ckeditorerror';\nimport mix from './mix';\n\n/**\n * Allows observing a group of `HTMLElement`s whether at least one of them is focused.\n *\n * Used by the {@link module:core/editor/editor~Editor} in order to track whether the focus is still within the application,\n * or were used outside of its UI.\n *\n * **Note** `focus` and `blur` listeners use event capturing, so it is only needed to register wrapper `HTMLElement`\n * which contain other `focusable` elements. But note that this wrapper element has to be focusable too\n * (have e.g. `tabindex=\"-1\"`).\n *\n * @mixes module:utils/dom/emittermixin~EmitterMixin\n * @mixes module:utils/observablemixin~ObservableMixin\n */\nexport default class FocusTracker {\n\tconstructor() {\n\t\t/**\n\t\t * True when one of the registered elements is focused.\n\t\t *\n\t\t * @readonly\n\t\t * @observable\n\t\t * @member {Boolean} #isFocused\n\t\t */\n\t\tthis.set( 'isFocused', false );\n\n\t\t/**\n\t\t * Currently focused element.\n\t\t *\n\t\t * @readonly\n\t\t * @member {HTMLElement}\n\t\t */\n\t\tthis.focusedElement = null;\n\n\t\t/**\n\t\t * List of registered elements.\n\t\t *\n\t\t * @private\n\t\t * @member {Set.<HTMLElement>}\n\t\t */\n\t\tthis._elements = new Set();\n\n\t\t/**\n\t\t * Event loop timeout.\n\t\t *\n\t\t * @private\n\t\t * @member {Number}\n\t\t */\n\t\tthis._nextEventLoopTimeout = null;\n\t}\n\n\t/**\n\t * Starts tracking the specified element.\n\t *\n\t * @param {HTMLElement} element\n\t */\n\tadd( element ) {\n\t\tif ( this._elements.has( element ) ) {\n\t\t\tthrow new CKEditorError( 'focusTracker-add-element-already-exist' );\n\t\t}\n\n\t\tthis.listenTo( element, 'focus', () => this._focus( element ), { useCapture: true } );\n\t\tthis.listenTo( element, 'blur', () => this._blur(), { useCapture: true } );\n\t\tthis._elements.add( element );\n\t}\n\n\t/**\n\t * Stops tracking the specified element and stops listening on this element.\n\t *\n\t * @param {HTMLElement} element\n\t */\n\tremove( element ) {\n\t\tif ( element === this.focusedElement ) {\n\t\t\tthis._blur( element );\n\t\t}\n\n\t\tif ( this._elements.has( element ) ) {\n\t\t\tthis.stopListening( element );\n\t\t\tthis._elements.delete( element );\n\t\t}\n\t}\n\n\t/**\n\t * Stores currently focused element and set {#isFocused} as `true`.\n\t *\n\t * @private\n\t * @param {HTMLElement} element Element which has been focused.\n\t */\n\t_focus( element ) {\n\t\tclearTimeout( this._nextEventLoopTimeout );\n\n\t\tthis.focusedElement = element;\n\t\tthis.isFocused = true;\n\t}\n\n\t/**\n\t * Clears currently focused element and set {@link #isFocused} as `false`.\n\t * This method uses `setTimeout` to change order of fires `blur` and `focus` events.\n\t *\n\t * @private\n\t * @fires blur\n\t */\n\t_blur() {\n\t\tthis._nextEventLoopTimeout = setTimeout( () => {\n\t\t\tthis.focusedElement = null;\n\t\t\tthis.isFocused = false;\n\t\t}, 0 );\n\t}\n\n\t/**\n\t * @event focus\n\t */\n\n\t/**\n\t * @event blur\n\t */\n}\n\nmix( FocusTracker, DomEmitterMixin );\nmix( FocusTracker, ObservableMixin );\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/focustracker.js\n// module id = 65\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/keystrokehandler\n */\n\nimport DomEmitterMixin from './dom/emittermixin';\nimport { getCode, parseKeystroke } from './keyboard';\n\n/**\n * Keystroke handler registers keystrokes so the callbacks associated\n * with these keystrokes will be executed if the matching `keydown` is fired\n * by a defined emitter.\n *\n *\t\tconst handler = new KeystrokeHandler();\n *\n *\t\thandler.listenTo( emitter );\n *\n *\t\thandler.set( 'ctrl + a', ( keyEventData, cancel ) => {\n *\t\t\tconsole.log( 'ctrl + a has been pressed' );\n *\t\t\tcancel();\n *\t\t} );\n */\nexport default class KeystrokeHandler {\n\t/**\n\t * Creates an instance of the keystroke handler.\n\t */\n\tconstructor() {\n\t\t/**\n\t\t * Listener used to listen to events for easier keystroke handler destruction.\n\t\t *\n\t\t * @protected\n\t\t * @member {module:utils/dom/emittermixin~Emitter}\n\t\t */\n\t\tthis._listener = Object.create( DomEmitterMixin );\n\n\t\t/**\n\t\t * Map of the defined keystrokes. Keystroke codes are the keys.\n\t\t *\n\t\t * @private\n\t\t * @member {Map}\n\t\t */\n\t\tthis._keystrokes = new Map();\n\t}\n\n\t/**\n\t * Starts listening for `keydown` events from a given emitter.\n\t *\n\t * @param {module:utils/emittermixin~Emitter} emitter\n\t */\n\tlistenTo( emitter ) {\n\t\tthis._listener.listenTo( emitter, 'keydown', ( evt, data ) => {\n\t\t\tthis.press( data );\n\t\t} );\n\t}\n\n\t/**\n\t * Registers a handler for the specified keystroke.\n\t *\n\t * @param {String|Array.<String|Number>} keystroke Keystroke defined in a format accepted by\n\t * the {@link module:utils/keyboard~parseKeystroke} function.\n\t * @param {Function} callback A function called with the\n\t * {@link module:engine/view/observer/keyobserver~KeyEventData key event data} object and\n\t * a helper to both `preventDefault` and `stopPropagation` of the event.\n\t */\n\tset( keystroke, callback ) {\n\t\tconst keyCode = parseKeystroke( keystroke );\n\t\tconst callbacks = this._keystrokes.get( keyCode );\n\n\t\tif ( callbacks ) {\n\t\t\tcallbacks.push( callback );\n\t\t} else {\n\t\t\tthis._keystrokes.set( keyCode, [ callback ] );\n\t\t}\n\t}\n\n\t/**\n\t * Triggers a keystroke handler for a specified key combination, if such a keystroke was {@link #set defined}.\n\t *\n\t * @param {module:engine/view/observer/keyobserver~KeyEventData} keyEventData Key event data.\n\t * @returns {Boolean} Whether the keystroke was handled.\n\t */\n\tpress( keyEventData ) {\n\t\tconst keyCode = getCode( keyEventData );\n\t\tconst callbacks = this._keystrokes.get( keyCode );\n\n\t\tif ( !callbacks ) {\n\t\t\treturn false;\n\t\t}\n\n\t\tfor ( let callback of callbacks ) {\n\t\t\tcallback( keyEventData, () => {\n\t\t\t\tkeyEventData.preventDefault();\n\t\t\t\tkeyEventData.stopPropagation();\n\t\t\t} );\n\t\t}\n\n\t\treturn true;\n\t}\n\n\t/**\n\t * Destroys the keystroke handler.\n\t */\n\tdestroy() {\n\t\tthis._keystrokes = new Map();\n\t\tthis._listener.stopListening();\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/keystrokehandler.js\n// module id = 66\n// module chunks = 0","import eq from './eq';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/**\n * Assigns `value` to `key` of `object` if the existing value is not equivalent\n * using [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)\n * for equality comparisons.\n *\n * @private\n * @param {Object} object The object to modify.\n * @param {string} key The key of the property to assign.\n * @param {*} value The value to assign.\n */\nfunction assignValue(object, key, value) {\n  var objValue = object[key];\n  if (!(hasOwnProperty.call(object, key) && eq(objValue, value)) ||\n      (value === undefined && !(key in object))) {\n    object[key] = value;\n  }\n}\n\nexport default assignValue;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_assignValue.js\n// module id = 67\n// module chunks = 0","import SetCache from './_SetCache';\nimport arrayIncludes from './_arrayIncludes';\nimport arrayIncludesWith from './_arrayIncludesWith';\nimport arrayMap from './_arrayMap';\nimport baseUnary from './_baseUnary';\nimport cacheHas from './_cacheHas';\n\n/** Used as the size to enable large array optimizations. */\nvar LARGE_ARRAY_SIZE = 200;\n\n/**\n * The base implementation of methods like `_.difference` without support\n * for excluding multiple arrays or iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {Array} values The values to exclude.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of filtered values.\n */\nfunction baseDifference(array, values, iteratee, comparator) {\n  var index = -1,\n      includes = arrayIncludes,\n      isCommon = true,\n      length = array.length,\n      result = [],\n      valuesLength = values.length;\n\n  if (!length) {\n    return result;\n  }\n  if (iteratee) {\n    values = arrayMap(values, baseUnary(iteratee));\n  }\n  if (comparator) {\n    includes = arrayIncludesWith;\n    isCommon = false;\n  }\n  else if (values.length >= LARGE_ARRAY_SIZE) {\n    includes = cacheHas;\n    isCommon = false;\n    values = new SetCache(values);\n  }\n  outer:\n  while (++index < length) {\n    var value = array[index],\n        computed = iteratee ? iteratee(value) : value;\n\n    value = (comparator || value !== 0) ? value : 0;\n    if (isCommon && computed === computed) {\n      var valuesIndex = valuesLength;\n      while (valuesIndex--) {\n        if (values[valuesIndex] === computed) {\n          continue outer;\n        }\n      }\n      result.push(value);\n    }\n    else if (!includes(values, computed, comparator)) {\n      result.push(value);\n    }\n  }\n  return result;\n}\n\nexport default baseDifference;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_baseDifference.js\n// module id = 68\n// module chunks = 0","import baseHas from './_baseHas';\nimport baseKeys from './_baseKeys';\nimport indexKeys from './_indexKeys';\nimport isArrayLike from './isArrayLike';\nimport isIndex from './_isIndex';\nimport isPrototype from './_isPrototype';\n\n/**\n * Creates an array of the own enumerable property names of `object`.\n *\n * **Note:** Non-object values are coerced to objects. See the\n * [ES spec](http://ecma-international.org/ecma-262/6.0/#sec-object.keys)\n * for more details.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n * @example\n *\n * function Foo() {\n *   this.a = 1;\n *   this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.keys(new Foo);\n * // => ['a', 'b'] (iteration order is not guaranteed)\n *\n * _.keys('hi');\n * // => ['0', '1']\n */\nfunction keys(object) {\n  var isProto = isPrototype(object);\n  if (!(isProto || isArrayLike(object))) {\n    return baseKeys(object);\n  }\n  var indexes = indexKeys(object),\n      skipIndexes = !!indexes,\n      result = indexes || [],\n      length = result.length;\n\n  for (var key in object) {\n    if (baseHas(object, key) &&\n        !(skipIndexes && (key == 'length' || isIndex(key, length))) &&\n        !(isProto && key == 'constructor')) {\n      result.push(key);\n    }\n  }\n  return result;\n}\n\nexport default keys;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/keys.js\n// module id = 69\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/uid\n */\n\n/**\n * Returns a unique id. This id is a number (starting from 1) which will never get repeated on successive calls\n * to this method.\n *\n * @returns {String} A number representing the id.\n */\nexport default function uid() {\n\tlet uuid = 'e'; // Make sure that id does not start with number.\n\n\tfor ( let i = 0; i < 8; i++ ) {\n\t\tuuid += Math.floor( ( 1 + Math.random() ) * 0x10000 ).toString( 16 ).substring( 1 );\n\t}\n\n\treturn uuid;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/uid.js\n// module id = 70\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/nodelist\n */\n\nimport Node from './node';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/**\n * Provides an interface to operate on a list of {@link module:engine/model/node~Node nodes}. `NodeList` is used internally\n * in classes like {@link module:engine/model/element~Element Element}\n * or {@link module:engine/model/documentfragment~DocumentFragment DocumentFragment}.\n */\nexport default class NodeList {\n\t/**\n\t * Creates an empty node list.\n\t *\n\t * @param {Iterable.<module:engine/model/node~Node>} nodes Nodes contained in this node list.\n\t */\n\tconstructor( nodes ) {\n\t\t/**\n\t\t * Nodes contained in this node list.\n\t\t *\n\t\t * @private\n\t\t * @member {Array.<module:engine/model/node~Node>}\n\t\t */\n\t\tthis._nodes = [];\n\n\t\tif ( nodes ) {\n\t\t\tthis.insertNodes( 0, nodes );\n\t\t}\n\t}\n\n\t/**\n\t * Returns an iterator that iterates over all nodes contained inside this node list.\n\t *\n\t * @returns {Iterator.<module:engine/model/node~Node>}\n\t */\n\t[ Symbol.iterator ]() {\n\t\treturn this._nodes[ Symbol.iterator ]();\n\t}\n\n\t/**\n\t * Number of nodes contained inside this node list.\n\t *\n\t * @readonly\n\t * @type {Number}\n\t */\n\tget length() {\n\t\treturn this._nodes.length;\n\t}\n\n\t/**\n\t * Sum of {@link module:engine/model/node~Node#offsetSize offset sizes} of all nodes contained inside this node list.\n\t *\n\t * @readonly\n\t * @type {Number}\n\t */\n\tget maxOffset() {\n\t\treturn this._nodes.reduce( ( sum, node ) => sum + node.offsetSize, 0 );\n\t}\n\n\t/**\n\t * Gets the node at the given index. Returns `null` if incorrect index was passed.\n\t *\n\t * @param {Number} index Index of node.\n\t * @returns {module:engine/model/node~Node|null} Node at given index.\n\t */\n\tgetNode( index ) {\n\t\treturn this._nodes[ index ] || null;\n\t}\n\n\t/**\n\t * Returns an index of the given node. Returns `null` if given node is not inside this node list.\n\t *\n\t * @param {module:engine/model/node~Node} node Child node to look for.\n\t * @returns {Number|null} Child node's index.\n\t */\n\tgetNodeIndex( node ) {\n\t\tconst index = this._nodes.indexOf( node );\n\n\t\treturn index == -1 ? null : index;\n\t}\n\n\t/**\n\t * Returns the starting offset of given node. Starting offset is equal to the sum of\n\t * {module:engine/model/node~Node#offsetSize offset sizes} of all nodes that are before this node in this node list.\n\t *\n\t * @param {module:engine/model/node~Node} node Node to look for.\n\t * @returns {Number|null} Node's starting offset.\n\t */\n\tgetNodeStartOffset( node ) {\n\t\tconst index = this.getNodeIndex( node );\n\n\t\treturn index === null ? null : this._nodes.slice( 0, index ).reduce( ( sum, node ) => sum + node.offsetSize, 0 );\n\t}\n\n\t/**\n\t * Converts index to offset in node list.\n\t *\n\t * Returns starting offset of a node that is at given index. Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError}\n\t * `model-nodelist-index-out-of-bounds` if given index is less than `0` or more than {@link #length}.\n\t *\n\t * @param {Number} index Node's index.\n\t * @returns {Number} Node's starting offset.\n\t */\n\tindexToOffset( index ) {\n\t\tif ( index == this._nodes.length ) {\n\t\t\treturn this.maxOffset;\n\t\t}\n\n\t\tconst node = this._nodes[ index ];\n\n\t\tif ( !node ) {\n\t\t\t/**\n\t\t\t * Given index cannot be found in the node list.\n\t\t\t *\n\t\t\t * @error nodelist-index-out-of-bounds\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'model-nodelist-index-out-of-bounds: Given index cannot be found in the node list.' );\n\t\t}\n\n\t\treturn this.getNodeStartOffset( node );\n\t}\n\n\t/**\n\t * Converts offset in node list to index.\n\t *\n\t * Returns index of a node that occupies given offset. Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError}\n\t * `model-nodelist-offset-out-of-bounds` if given offset is less than `0` or more than {@link #maxOffset}.\n\t *\n\t * @param {Number} offset Offset to look for.\n\t * @returns {Number} Index of a node that occupies given offset.\n\t */\n\toffsetToIndex( offset ) {\n\t\tlet totalOffset = 0;\n\n\t\tfor ( let node of this._nodes ) {\n\t\t\tif ( offset >= totalOffset && offset < totalOffset + node.offsetSize  ) {\n\t\t\t\treturn this.getNodeIndex( node );\n\t\t\t}\n\n\t\t\ttotalOffset += node.offsetSize;\n\t\t}\n\n\t\tif ( totalOffset != offset ) {\n\t\t\t/**\n\t\t\t * Given offset cannot be found in the node list.\n\t\t\t *\n\t\t\t * @error nodelist-offset-out-of-bounds\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'model-nodelist-offset-out-of-bounds: Given offset cannot be found in the node list.' );\n\t\t}\n\n\t\treturn this.length;\n\t}\n\n\t/**\n\t * Inserts given nodes at given index.\n\t *\n\t * @param {Number} index Index at which nodes should be inserted.\n\t * @param {Iterable.<module:engine/model/node~Node>} nodes Nodes to be inserted.\n\t */\n\tinsertNodes( index, nodes ) {\n\t\t// Validation.\n\t\tfor ( let node of nodes ) {\n\t\t\tif ( !( node instanceof Node ) ) {\n\t\t\t\t/**\n\t\t\t\t * Trying to insert an object which is not a Node instance.\n\t\t\t\t *\n\t\t\t\t * @error nodelist-insertNodes-not-node\n\t\t\t\t */\n\t\t\t\tthrow new CKEditorError( 'model-nodelist-insertNodes-not-node: Trying to insert an object which is not a Node instance.' );\n\t\t\t}\n\t\t}\n\n\t\tthis._nodes.splice( index, 0, ...nodes );\n\t}\n\n\t/**\n\t * Removes one or more nodes starting at the given index.\n\t *\n\t * @param {Number} indexStart Index of the first node to remove.\n\t * @param {Number} [howMany=1] Number of nodes to remove.\n\t * @returns {Array.<module:engine/model/node~Node>} Array containing removed nodes.\n\t */\n\tremoveNodes( indexStart, howMany = 1 ) {\n\t\treturn this._nodes.splice( indexStart, howMany );\n\t}\n\n\t/**\n\t * Converts `NodeList` instance to an array containing nodes that were inserted in the node list. Nodes\n\t * are also converted to their plain object representation.\n\t *\n\t * @returns {Array.<module:engine/model/node~Node>} `NodeList` instance converted to `Array`.\n\t */\n\ttoJSON() {\n\t\treturn this._nodes.map( ( node ) => node.toJSON() );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/nodelist.js\n// module id = 71\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/operation/attributeoperation\n */\n\nimport Operation from './operation';\nimport Range from '../range';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\nimport writer from '../writer';\nimport isEqual from '@ckeditor/ckeditor5-utils/src/lib/lodash/isEqual';\n\n/**\n * Operation to change nodes' attribute.\n *\n * Using this class you can add, remove or change value of the attribute.\n *\n * @extends module:engine/model/operation/operation~Operation\n */\nexport default class AttributeOperation extends Operation {\n\t/**\n\t * Creates an operation that changes, removes or adds attributes.\n\t *\n\t * If only `newValue` is set, attribute will be added on a node. Note that all nodes in operation's range must not\n\t * have an attribute with the same key as the added attribute.\n\t *\n\t * If only `oldValue` is set, then attribute with given key will be removed. Note that all nodes in operation's range\n\t * must have an attribute with that key added.\n\t *\n\t * If both `newValue` and `oldValue` are set, then the operation will change the attribute value. Note that all nodes in\n\t * operation's ranges must already have an attribute with given key and `oldValue` as value\n\t *\n\t * @param {module:engine/model/range~Range} range Range on which the operation should be applied.\n\t * @param {String} key Key of an attribute to change or remove.\n\t * @param {*} oldValue Old value of the attribute with given key or `null`, if attribute was not set before.\n\t * @param {*} newValue New value of the attribute with given key or `null`, if operation should remove attribute.\n\t * @param {Number} baseVersion {@link module:engine/model/document~Document#version} on which the operation can be applied.\n\t */\n\tconstructor( range, key, oldValue, newValue, baseVersion ) {\n\t\tsuper( baseVersion );\n\n\t\t/**\n\t\t * Range on which operation should be applied.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/model/range~Range}\n\t\t */\n\t\tthis.range = Range.createFromRange( range );\n\n\t\t/**\n\t\t * Key of an attribute to change or remove.\n\t\t *\n\t\t * @readonly\n\t\t * @member {String}\n\t\t */\n\t\tthis.key = key;\n\n\t\t/**\n\t\t * Old value of the attribute with given key or `null`, if attribute was not set before.\n\t\t *\n\t\t * @readonly\n\t\t * @member {*}\n\t\t */\n\t\tthis.oldValue = oldValue === undefined ? null : oldValue;\n\n\t\t/**\n\t\t * New value of the attribute with given key or `null`, if operation should remove attribute.\n\t\t *\n\t\t * @readonly\n\t\t * @member {*}\n\t\t */\n\t\tthis.newValue = newValue === undefined ? null : newValue;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tget type() {\n\t\tif ( this.oldValue === null ) {\n\t\t\treturn 'addAttribute';\n\t\t} else if ( this.newValue === null ) {\n\t\t\treturn 'removeAttribute';\n\t\t} else {\n\t\t\treturn 'changeAttribute';\n\t\t}\n\t}\n\n\t/**\n\t * @inheritDoc\n\t * @returns {module:engine/model/operation/attributeoperation~AttributeOperation}\n\t */\n\tclone() {\n\t\treturn new AttributeOperation( this.range, this.key, this.oldValue, this.newValue, this.baseVersion );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t * @returns {module:engine/model/operation/attributeoperation~AttributeOperation}\n\t */\n\tgetReversed() {\n\t\treturn new AttributeOperation( this.range, this.key, this.newValue, this.oldValue, this.baseVersion + 1 );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\t_execute() {\n\t\t// Validation.\n\t\tfor ( let item of this.range.getItems() ) {\n\t\t\tif ( this.oldValue !== null && !isEqual( item.getAttribute( this.key ), this.oldValue ) ) {\n\t\t\t\t/**\n\t\t\t\t * Changed node has different attribute value than operation's old attribute value.\n\t\t\t\t *\n\t\t\t\t * @error operation-attribute-wrong-old-value\n\t\t\t\t * @param {module:engine/model/item~Item} item\n\t\t\t\t * @param {String} key\n\t\t\t\t * @param {*} value\n\t\t\t\t */\n\t\t\t\tthrow new CKEditorError(\n\t\t\t\t\t'attribute-operation-wrong-old-value: Changed node has different attribute value than operation\\'s old attribute value.',\n\t\t\t\t\t{ item: item, key: this.key, value: this.oldValue }\n\t\t\t\t);\n\t\t\t}\n\n\t\t\tif ( this.oldValue === null && this.newValue !== null && item.hasAttribute( this.key ) ) {\n\t\t\t\t/**\n\t\t\t\t * The attribute with given key already exists for the given node.\n\t\t\t\t *\n\t\t\t\t * @error attribute-operation-attribute-exists\n\t\t\t\t * @param {module:engine/model/node~Node} node\n\t\t\t\t * @param {String} key\n\t\t\t\t */\n\t\t\t\tthrow new CKEditorError(\n\t\t\t\t\t'attribute-operation-attribute-exists: The attribute with given key already exists.',\n\t\t\t\t\t{ node: item, key: this.key }\n\t\t\t\t);\n\t\t\t}\n\n\t\t\t// If value to set is same as old value, don't do anything.\n\t\t\t// By returning `undefined`, this operation will be seen as `NoOperation` - that means\n\t\t\t// that it won't generate any events, etc. `AttributeOperation` with such parameters may be\n\t\t\t// a result of operational transformation.\n\t\t\tif ( isEqual( this.oldValue, this.newValue ) ) {\n\t\t\t\treturn;\n\t\t\t}\n\t\t}\n\n\t\t// Execution.\n\t\twriter.setAttribute( this.range, this.key, this.newValue );\n\n\t\treturn { range: this.range, key: this.key, oldValue: this.oldValue, newValue: this.newValue };\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.operation.AttributeOperation';\n\t}\n\n\t/**\n\t * Creates `AttributeOperation` object from deserilized object, i.e. from parsed JSON string.\n\t *\n\t * @param {Object} json Deserialized JSON object.\n\t * @param {module:engine/model/document~Document} document Document on which this operation will be applied.\n\t * @returns {module:engine/model/operation/attributeoperation~AttributeOperation}\n\t */\n\tstatic fromJSON( json, document ) {\n\t\treturn new AttributeOperation( Range.fromJSON( json.range, document ), json.key, json.oldValue, json.newValue, json.baseVersion );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/operation/attributeoperation.js\n// module id = 72\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/operation/nooperation\n */\n\nimport Operation from './operation';\n\n/**\n * Operation which is doing nothing (\"empty operation\", \"do-nothing operation\", \"noop\"). This is an operation,\n * which when executed does not change the tree model. It still has some parameters defined for transformation purposes.\n *\n * In most cases this operation is a result of transforming operations. When transformation returns\n * {@link module:engine/model/operation/nooperation~NoOperation} it means that changes done by the transformed operation\n * have already been applied.\n *\n * @extends module:engine/model/operation/operation~Operation\n */\nexport default class NoOperation extends Operation {\n\t/**\n\t * @inheritDoc\n\t * @returns {module:engine/model/operation/nooperation~NoOperation}\n\t */\n\tclone() {\n\t\treturn new NoOperation( this.baseVersion );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t * @returns {module:engine/model/operation/nooperation~NoOperation}\n\t */\n\tgetReversed() {\n\t\treturn new NoOperation( this.baseVersion + 1 );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\t_execute() {\n\t\t// Do nothing.\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.operation.NoOperation';\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/operation/nooperation.js\n// module id = 73\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/editableelement\n */\n\nimport ContainerElement from './containerelement';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\nimport ObservableMixin from '@ckeditor/ckeditor5-utils/src/observablemixin';\n\nconst documentSymbol = Symbol( 'document' );\n\n/**\n * Editable element which can be a {@link module:engine/view/rooteditableelement~RootEditableElement root}\n * or nested editable area in the editor.\n *\n * @extends module:engine/view/containerelement~ContainerElement\n * @mixes module:utils/observablemixin~ObservaleMixin\n */\nexport default class EditableElement extends ContainerElement {\n\t/**\n\t * Creates an editable element.\n\t */\n\tconstructor( name, attrs, children ) {\n\t\tsuper( name, attrs, children );\n\n\t\t/**\n\t\t * Whether the editable is in read-write or read-only mode.\n\t\t *\n\t\t * @observable\n\t\t * @member {Boolean} module:engine/view/editableelement~EditableElement#isReadOnly\n\t\t */\n\t\tthis.set( 'isReadOnly', false );\n\n\t\t/**\n\t\t * Whether the editable is focused.\n\t\t *\n\t\t * This property updates when {@link module:engine/view/document~Document#isFocused document.isFocused} is changed and after each\n\t\t * {@link module:engine/view/document~Document#render render} method call.\n\t\t *\n\t\t * @readonly\n\t\t * @observable\n\t\t * @member {Boolean} module:engine/view/editableelement~EditableElement#isFocused\n\t\t */\n\t\tthis.set( 'isFocused', false );\n\n\t\t/**\n\t\t * The {@link module:engine/view/document~Document} which is an owner of this root.\n\t\t * Can only by set once.\n\t\t * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-editableelement-document-already-set`\n\t\t * when document is already set.\n\t\t *\n\t\t * @member {module:engine/view/document~Document} #document\n\t\t */\n\t}\n\n\tget document() {\n\t\treturn this.getCustomProperty( documentSymbol );\n\t}\n\n\tset document( document ) {\n\t\tif ( this.getCustomProperty( documentSymbol ) ) {\n\t\t\t/**\n\t\t\t * View document is already set. It can only be set once.\n\t\t\t *\n\t\t\t * @error view-editableelement-document-already-set\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'view-editableelement-document-already-set: View document is already set.' );\n\t\t}\n\n\t\tthis.setCustomProperty( documentSymbol, document );\n\n\t\tthis.bind( 'isFocused' ).to(\n\t\t\tdocument,\n\t\t\t'isFocused',\n\t\t\t( isFocused ) => isFocused && document.selection.editableElement == this\n\t\t);\n\n\t\t// Update focus state before each rendering. Rendering should not change neither the selection nor the value of\n\t\t// document.isFocused property.\n\t\tthis.listenTo( document, 'render', () => {\n\t\t\tthis.isFocused = document.isFocused && document.selection.editableElement == this;\n\t\t}, { priority: 'high' } );\n\t}\n}\n\nmix( EditableElement, ObservableMixin );\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/view/editableelement.js\n// module id = 74\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/node\n */\n\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\nimport EmitterMixin from '@ckeditor/ckeditor5-utils/src/emittermixin';\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\n\n/**\n * Abstract tree view node class.\n *\n * @abstract\n */\nexport default class Node {\n\t/**\n\t * Creates a tree view node.\n\t *\n\t * This is an abstract class, so this constructor should not be used directly.\n\t */\n\tconstructor() {\n\t\t/**\n\t\t * Parent element. Null by default. Set by {@link module:engine/view/element~Element#insertChildren}.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/view/element~Element|module:engine/view/documentfragment~DocumentFragment|null}\n\t\t */\n\t\tthis.parent = null;\n\t}\n\n\t/**\n\t * Index of the node in the parent element or null if the node has no parent.\n\t *\n\t * Accessing this property throws an error if this node's parent element does not contain it.\n\t * This means that view tree got broken.\n\t *\n\t * @readonly\n\t * @type {Number|null}\n\t */\n\tget index() {\n\t\tlet pos;\n\n\t\tif ( !this.parent ) {\n\t\t\treturn null;\n\t\t}\n\n\t\t// No parent or child doesn't exist in parent's children.\n\t\tif ( ( pos = this.parent.getChildIndex( this ) ) == -1 ) {\n\t\t\t/**\n\t\t\t * The node's parent does not contain this node. It means that the document tree is corrupted.\n\t\t\t *\n\t\t\t * @error view-node-not-found-in-parent\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'view-node-not-found-in-parent: The node\\'s parent does not contain this node.' );\n\t\t}\n\n\t\treturn pos;\n\t}\n\n\t/**\n\t * Node's next sibling, or `null` if it is the last child.\n\t *\n\t * @readonly\n\t * @type {module:engine/view/node~Node|null}\n\t */\n\tget nextSibling() {\n\t\tconst index = this.index;\n\n\t\treturn ( index !== null && this.parent.getChild( index + 1 ) ) || null;\n\t}\n\n\t/**\n\t * Node's previous sibling, or `null` if it is the first child.\n\t *\n\t * @readonly\n\t * @type {module:engine/view/node~Node|null}\n\t */\n\tget previousSibling() {\n\t\tconst index = this.index;\n\n\t\treturn ( index !== null && this.parent.getChild( index - 1 ) ) || null;\n\t}\n\n\t/**\n\t * Top-most ancestor of the node. If the node has no parent it is the root itself.\n\t *\n\t * @readonly\n\t * @type {module:engine/view/node~Node|module:engine/view/documentfragment~DocumentFragment}\n\t */\n\tget root() {\n\t\tlet root = this;\n\n\t\twhile ( root.parent ) {\n\t\t\troot = root.parent;\n\t\t}\n\n\t\treturn root;\n\t}\n\n\t/**\n\t * {@link module:engine/view/document~Document View document} that owns this node, or `null` if the node is inside\n\t * {@link module:engine/view/documentfragment~DocumentFragment document fragment}.\n\t *\n\t * @readonly\n\t * @type {module:engine/view/document~Document|null}\n\t */\n\tget document() {\n\t\t// Parent might be Node, null or DocumentFragment.\n\t\tif ( this.parent instanceof Node ) {\n\t\t\treturn this.parent.document;\n\t\t} else {\n\t\t\treturn null;\n\t\t}\n\t}\n\n\t/**\n\t * Returns ancestors array of this node.\n\t *\n\t * @param {Object} options Options object.\n\t * @param {Boolean} [options.includeNode=false] When set to `true` this node will be also included in parent's array.\n\t * @param {Boolean} [options.parentFirst=false] When set to `true`, array will be sorted from node's parent to root element,\n\t * otherwise root element will be the first item in the array.\n\t * @returns {Array} Array with ancestors.\n\t */\n\tgetAncestors( options = { includeNode: false, parentFirst: false } ) {\n\t\tconst ancestors = [];\n\t\tlet parent = options.includeNode ? this : this.parent;\n\n\t\twhile ( parent ) {\n\t\t\tancestors[ options.parentFirst ? 'push' : 'unshift' ]( parent );\n\t\t\tparent = parent.parent;\n\t\t}\n\n\t\treturn ancestors;\n\t}\n\n\t/**\n\t * Removes node from parent.\n\t */\n\tremove() {\n\t\tthis.parent.removeChildren( this.index );\n\t}\n\n\t/**\n\t * @param {module:engine/view/document~ChangeType} type Type of the change.\n\t * @param {module:engine/view/node~Node} node Changed node.\n\t * @fires change\n\t */\n\t_fireChange( type, node ) {\n\t\tthis.fire( 'change:' + type, node );\n\n\t\tif ( this.parent ) {\n\t\t\tthis.parent._fireChange( type, node );\n\t\t}\n\t}\n\n\t/**\n\t * Clones this node.\n\t *\n\t * @method #clone\n\t * @returns {module:engine/view/node~Node} Clone of this node.\n\t */\n\n\t/**\n\t * Checks if provided node is similar to this node.\n\t *\n\t * @method #isSimilar\n\t * @returns {Boolean} True if nodes are similar.\n\t */\n\n\t/**\n\t * Checks whether given view tree object is of given type.\n\t *\n\t * This method is useful when processing view tree objects that are of unknown type. For example, a function\n\t * may return {@link module:engine/view/documentfragment~DocumentFragment} or {@link module:engine/view/node~Node}\n\t * that can be either text node or element. This method can be used to check what kind of object is returned.\n\t *\n\t *\t\tobj.is( 'node' ); // true for any node, false for document fragment\n\t *\t\tobj.is( 'documentFragment' ); // true for document fragment, false for any node\n\t *\t\tobj.is( 'element' ); // true for any element, false for text node or document fragment\n\t *\t\tobj.is( 'element', 'p' ); // true only for element which name is 'p'\n\t *\t\tobj.is( 'p' ); // shortcut for obj.is( 'element', 'p' )\n\t *\t\tobj.is( 'text' ); // true for text node, false for element and document fragment\n\t *\n\t * @method #is\n\t * @param {'element'|'containerElement'|'attributeElement'|'emptyElement'|'uiElement'|\n\t * 'rootElement'|'documentFragment'|'text'|'textProxy'} type\n\t * @returns {Boolean}\n\t */\n}\n\n/**\n * Fired when list of {@link module:engine/view/element~Element elements} children changes.\n *\n * Change event is bubbled – it is fired on all ancestors.\n *\n * @event change:children\n * @param {module:engine/view/node~Node} Changed node.\n */\n\n/**\n * Fired when list of {@link module:engine/view/element~Element elements} attributes changes.\n *\n * Change event is bubbled – it is fired on all ancestors.\n *\n * @event change:attributes\n * @param {module:engine/view/node~Node} Changed node.\n */\n\n/**\n * Fired when {@link module:engine/view/text~Text text nodes} data changes.\n *\n * Change event is bubbled – it is fired on all ancestors.\n *\n * @event change:text\n * @param {module:engine/view/node~Node} Changed node.\n */\n\n/**\n * @event change\n */\n\nmix( Node, EmitterMixin );\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/view/node.js\n// module id = 75\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module paragraph/paragraph\n */\n\nimport ParagraphCommand from './paragraphcommand';\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\n\nimport ModelElement from '@ckeditor/ckeditor5-engine/src/model/element';\nimport ModelPosition from '@ckeditor/ckeditor5-engine/src/model/position';\nimport ModelRange from '@ckeditor/ckeditor5-engine/src/model/range';\nimport ViewElement from '@ckeditor/ckeditor5-engine/src/view/element';\nimport ViewRange from '@ckeditor/ckeditor5-engine/src/view/range';\n\nimport modelWriter from '@ckeditor/ckeditor5-engine/src/model/writer';\nimport buildModelConverter from '@ckeditor/ckeditor5-engine/src/conversion/buildmodelconverter';\nimport buildViewConverter from '@ckeditor/ckeditor5-engine/src/conversion/buildviewconverter';\n\nimport isArray from '@ckeditor/ckeditor5-utils/src/lib/lodash/isArray';\n\n/**\n * The paragraph feature for the editor.\n * Introduces the `<paragraph>` element in the model which renders as a `<p>` element in the DOM and data.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class Paragraph extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get pluginName() {\n\t\treturn 'paragraph/paragraph';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tconst editor = this.editor;\n\t\tconst doc = editor.document;\n\t\tconst data = editor.data;\n\t\tconst editing = editor.editing;\n\n\t\t// Schema.\n\t\tdoc.schema.registerItem( 'paragraph', '$block' );\n\n\t\t// Build converter from model to view for data and editing pipelines.\n\t\tbuildModelConverter().for( data.modelToView, editing.modelToView )\n\t\t\t.fromElement( 'paragraph' )\n\t\t\t.toElement( 'p' );\n\n\t\t// Build converter from view to model for data pipeline.\n\t\tbuildViewConverter().for( data.viewToModel )\n\t\t\t.fromElement( 'p' )\n\t\t\t.toElement( 'paragraph' );\n\n\t\t// Autoparagraph text.\n\t\tdata.viewToModel.on( 'text', ( evt, data, consumable, conversionApi ) => {\n\t\t\tautoparagraphText( doc, evt, data, consumable, conversionApi );\n\t\t}, { priority: 'lowest' } );\n\n\t\t// Post-fix potential subsequent paragraphs created by autoparagraphText().\n\t\tdata.viewToModel.on( 'element', mergeSubsequentParagraphs, { priority: 'lowest' } );\n\t\tdata.viewToModel.on( 'documentFragment', mergeSubsequentParagraphs, { priority: 'lowest' } );\n\n\t\t// Convert paragraph-like elements to paragraphs if they weren't consumed.\n\t\t// It's a 'low' priority in order to hook in before the default 'element' converter\n\t\t// which would then convert children before handling this element.\n\t\tdata.viewToModel.on( 'element', ( evt, data, consumable, conversionApi ) => {\n\t\t\tautoparagraphParagraphLikeElements( doc, evt, data, consumable, conversionApi );\n\t\t}, { priority: 'low' } );\n\n\t\teditor.commands.set( 'paragraph', new ParagraphCommand( editor ) );\n\t}\n}\n\n/**\n * List of element names which should be treated by the autoparagraphing algorithms as\n * paragraph-like. This means that e.g. the following content:\n *\n *\t\t<h1>Foo</h1>\n *\t\t<table>\n *\t\t\t<tr>\n *\t\t\t\t<td>X</td>\n *\t\t\t\t<td>\n *\t\t\t\t\t<ul>\n *\t\t\t\t\t\t<li>Y</li>\n *\t\t\t\t\t\t<li>Z</li>\n *\t\t\t\t\t</ul>\n *\t\t\t\t</td>\n *\t\t\t</tr>\n *\t\t</table>\n *\n * Contains five paragraph-like elements – `<h1>` and two `<td>` and two `<li>`.\n * Hence, if none of the features is going to convert  those elements the above content will be automatically handled\n * by the paragraph feature and converted to:\n *\n *\t\t<p>Foo</p>\n *\t\t<p>X</p>\n *\t\t<p>Y</p>\n *\t\t<p>Z</p>\n *\n * Note: The `<td>` containing two `<li>` elements was ignored – the inner-most paragraph-like elements\n * have priority upon conversion.\n *\n * @member {Set.<String>} module:paragraph/paragraph~Paragraph.paragraphLikeElements\n */\nParagraph.paragraphLikeElements = new Set( [\n\t'blockquote',\n\t'dd',\n\t'div',\n\t'dt',\n\t'h1',\n\t'h2',\n\t'h3',\n\t'h4',\n\t'h5',\n\t'h6',\n\t'li',\n\t'p',\n\t'td'\n] );\n\nconst paragraphsToMerge = new WeakSet();\n\nfunction autoparagraphText( doc, evt, data, consumable, conversionApi ) {\n\t// If text wasn't consumed by the default converter...\n\tif ( !consumable.test( data.input ) ) {\n\t\treturn;\n\t}\n\n\t// And paragraph is allowed in this context...\n\tif ( !doc.schema.check( { name: 'paragraph', inside: data.context } ) ) {\n\t\treturn;\n\t}\n\n\t// Let's do autoparagraphing.\n\n\tconst paragraph = new ModelElement( 'paragraph' );\n\n\tparagraphsToMerge.add( paragraph );\n\n\tdata.context.push( paragraph );\n\n\tconst text = conversionApi.convertItem( data.input, consumable, data );\n\n\tif ( text ) {\n\t\tdata.output = paragraph;\n\t\tparagraph.appendChildren( text );\n\t}\n\n\tdata.context.pop();\n}\n\nfunction autoparagraphParagraphLikeElements( doc, evt, data, consumable, conversionApi ) {\n\t// If this is a paragraph-like element...\n\tif ( !Paragraph.paragraphLikeElements.has( data.input.name ) ) {\n\t\treturn;\n\t}\n\n\t// Which wasn't consumed by its own converter...\n\tif ( !consumable.test( data.input, { name: true } ) ) {\n\t\treturn;\n\t}\n\n\t// And there are no other paragraph-like elements inside this tree...\n\tif ( hasParagraphLikeContent( data.input ) ) {\n\t\treturn;\n\t}\n\n\t// And paragraph is allowed in this context...\n\tif ( !doc.schema.check( { name: 'paragraph', inside: data.context } ) ) {\n\t\treturn;\n\t}\n\n\t// Let's convert this element to a paragraph and then all its children.\n\n\tconsumable.consume( data.input, { name: true } );\n\n\tconst paragraph = new ModelElement( 'paragraph' );\n\n\tdata.context.push( paragraph );\n\n\tconst convertedChildren = conversionApi.convertChildren( data.input, consumable, data );\n\n\tparagraph.appendChildren( modelWriter.normalizeNodes( convertedChildren ) );\n\n\t// Remove the created paragraph from the stack for other converters.\n\t// See https://github.com/ckeditor/ckeditor5-engine/issues/736\n\tdata.context.pop();\n\n\tdata.output = paragraph;\n}\n\n// Merges subsequent paragraphs if they should be merged (see shouldMerge).\nfunction mergeSubsequentParagraphs( evt, data ) {\n\tif ( !data.output ) {\n\t\treturn;\n\t}\n\n\tlet node;\n\n\tif ( isArray( data.output ) ) {\n\t\tnode = data.output[ 0 ];\n\t} else {\n\t\tnode = data.output.getChild( 0 );\n\t}\n\n\twhile ( node && node.nextSibling ) {\n\t\tconst nextSibling = node.nextSibling;\n\n\t\tif ( paragraphsToMerge.has( node ) && paragraphsToMerge.has( nextSibling ) ) {\n\t\t\tmodelWriter.insert( ModelPosition.createAt( node, 'end' ), Array.from( nextSibling.getChildren() ) );\n\t\t\tmodelWriter.remove( ModelRange.createOn( nextSibling ) );\n\t\t} else {\n\t\t\tnode = node.nextSibling;\n\t\t}\n\t}\n}\n\n// Checks whether an element has paragraph-like descendant.\nfunction hasParagraphLikeContent( element ) {\n\tconst range = ViewRange.createIn( element );\n\n\tfor ( const value of range ) {\n\t\tif ( value.item instanceof ViewElement && Paragraph.paragraphLikeElements.has( value.item.name ) ) {\n\t\t\treturn true;\n\t\t}\n\t}\n\n\treturn false;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-paragraph/src/paragraph.js\n// module id = 77\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/collection\n */\n\nimport EmitterMixin from './emittermixin';\nimport CKEditorError from './ckeditorerror';\nimport uid from './uid';\nimport mix from './mix';\n\n/**\n * Collections are ordered sets of objects. Items in the collection can be retrieved by their indexes\n * in the collection (like in an array) or by their ids.\n *\n * If an object without an `id` property is being added to the collection, the `id` property will be generated\n * automatically. Note that the automatically generated id is unique only within this single collection instance.\n *\n * By default an item in the collection is identified by its `id` property. The name of the identifier can be\n * configured through the constructor of the collection.\n *\n * @mixes EventEmitter\n */\nexport default class Collection {\n\t/**\n\t * Creates a new Collection instance.\n\t *\n\t * @param {Object} options The options object.\n\t * @param {String} [options.idProperty='id'] The name of the property which is considered to identify an item.\n\t */\n\tconstructor( options ) {\n\t\t/**\n\t\t * The internal list of items in the collection.\n\t\t *\n\t\t * @private\n\t\t * @member {Object[]}\n\t\t */\n\t\tthis._items = [];\n\n\t\t/**\n\t\t * The internal map of items in the collection.\n\t\t *\n\t\t * @private\n\t\t * @member {Map}\n\t\t */\n\t\tthis._itemMap = new Map();\n\n\t\t/**\n\t\t * The name of the property which is considered to identify an item.\n\t\t *\n\t\t * @private\n\t\t * @member {String}\n\t\t */\n\t\tthis._idProperty = options && options.idProperty || 'id';\n\n\t\t/**\n\t\t * A helper mapping external items of a bound collection ({@link #bindTo})\n\t\t * and actual items of this collection. It provides information\n\t\t * necessary to properly remove items bound to another collection.\n\t\t *\n\t\t * See {@link #_bindToInternalToExternalMap}.\n\t\t *\n\t\t * @protected\n\t\t * @member {WeakMap}\n\t\t */\n\t\tthis._bindToExternalToInternalMap = new WeakMap();\n\n\t\t/**\n\t\t * A helper mapping items of this collection to external items of a bound collection\n\t\t * ({@link #bindTo}). It provides information necessary to manage the bindings, e.g.\n\t\t * to avoid loops in two–way bindings.\n\t\t *\n\t\t * See {@link #_bindToExternalToInternalMap}.\n\t\t *\n\t\t * @protected\n\t\t * @member {WeakMap}\n\t\t */\n\t\tthis._bindToInternalToExternalMap = new WeakMap();\n\n\t\t/**\n\t\t * A collection instance this collection is bound to as a result\n\t\t * of calling {@link #bindTo} method.\n\t\t *\n\t\t * @protected\n\t\t * @member {module:utils/collection~Collection} #_bindToCollection\n\t\t */\n\t}\n\n\t/**\n\t * The number of items available in the collection.\n\t *\n\t * @member {Number} #length\n\t */\n\tget length() {\n\t\treturn this._items.length;\n\t}\n\n\t/**\n\t * Adds an item into the collection.\n\t *\n\t * If the item does not have an id, then it will be automatically generated and set on the item.\n\t *\n\t * @chainable\n\t * @param {Object} item\n\t * @param {Number} [index] The position of the item in the collection. The item\n\t * is pushed to the collection when `index` not specified.\n\t * @fires add\n\t */\n\tadd( item, index ) {\n\t\tlet itemId;\n\t\tconst idProperty = this._idProperty;\n\n\t\tif ( ( idProperty in item ) ) {\n\t\t\titemId = item[ idProperty ];\n\n\t\t\tif ( typeof itemId != 'string' ) {\n\t\t\t\t/**\n\t\t\t\t * This item's id should be a string.\n\t\t\t\t *\n\t\t\t\t * @error collection-add-invalid-id\n\t\t\t\t */\n\t\t\t\tthrow new CKEditorError( 'collection-add-invalid-id' );\n\t\t\t}\n\n\t\t\tif ( this.get( itemId ) ) {\n\t\t\t\t/**\n\t\t\t\t * This item already exists in the collection.\n\t\t\t\t *\n\t\t\t\t * @error collection-add-item-already-exists\n\t\t\t\t */\n\t\t\t\tthrow new CKEditorError( 'collection-add-item-already-exists' );\n\t\t\t}\n\t\t} else {\n\t\t\titem[ idProperty ] = itemId = uid();\n\t\t}\n\n\t\t// TODO: Use ES6 default function argument.\n\t\tif ( index === undefined ) {\n\t\t\tindex = this._items.length;\n\t\t} else if ( index > this._items.length || index < 0 ) {\n\t\t\t/**\n\t\t\t * The index number has invalid value.\n\t\t\t *\n\t\t\t * @error collection-add-item-bad-index\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'collection-add-item-invalid-index' );\n\t\t}\n\n\t\tthis._items.splice( index, 0, item );\n\n\t\tthis._itemMap.set( itemId, item );\n\n\t\tthis.fire( 'add', item, index );\n\n\t\treturn this;\n\t}\n\n\t/**\n\t * Gets item by its id or index.\n\t *\n\t * @param {String|Number} idOrIndex The item id or index in the collection.\n\t * @returns {Object} The requested item or `null` if such item does not exist.\n\t */\n\tget( idOrIndex ) {\n\t\tlet item;\n\n\t\tif ( typeof idOrIndex == 'string' ) {\n\t\t\titem = this._itemMap.get( idOrIndex );\n\t\t} else if ( typeof idOrIndex == 'number' ) {\n\t\t\titem = this._items[ idOrIndex ];\n\t\t} else {\n\t\t\t/**\n\t\t\t * Index or id must be given.\n\t\t\t *\n\t\t\t * @error collection-get-invalid-arg\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'collection-get-invalid-arg: Index or id must be given.' );\n\t\t}\n\n\t\treturn item || null;\n\t}\n\n\t/**\n\t * Gets index of item in the collection.\n\t * When item is not defined in the collection then index will be equal -1.\n\t *\n\t * @param {String|Object} idOrItem The item or its id in the collection.\n\t * @returns {Number} Index of given item.\n\t */\n\tgetIndex( idOrItem ) {\n\t\tlet item;\n\n\t\tif ( typeof idOrItem == 'string' ) {\n\t\t\titem = this._itemMap.get( idOrItem );\n\t\t} else {\n\t\t\titem = idOrItem;\n\t\t}\n\n\t\treturn this._items.indexOf( item );\n\t}\n\n\t/**\n\t * Removes an item from the collection.\n\t *\n\t * @param {Object|Number|String} subject The item to remove, its id or index in the collection.\n\t * @returns {Object} The removed item.\n\t * @fires remove\n\t */\n\tremove( subject ) {\n\t\tlet index, id, item;\n\t\tlet itemDoesNotExist = false;\n\t\tconst idProperty = this._idProperty;\n\n\t\tif ( typeof subject == 'string' ) {\n\t\t\tid = subject;\n\t\t\titem = this._itemMap.get( id );\n\t\t\titemDoesNotExist = !item;\n\n\t\t\tif ( item ) {\n\t\t\t\tindex = this._items.indexOf( item );\n\t\t\t}\n\t\t} else if ( typeof subject == 'number' ) {\n\t\t\tindex = subject;\n\t\t\titem = this._items[ index ];\n\t\t\titemDoesNotExist = !item;\n\n\t\t\tif ( item ) {\n\t\t\t\tid = item[ idProperty ];\n\t\t\t}\n\t\t} else {\n\t\t\titem = subject;\n\t\t\tid = item[ idProperty ];\n\t\t\tindex = this._items.indexOf( item );\n\t\t\titemDoesNotExist = ( index == -1 || !this._itemMap.get( id ) );\n\t\t}\n\n\t\tif ( itemDoesNotExist ) {\n\t\t\t/**\n\t\t\t * Item not found.\n\t\t\t *\n\t\t\t * @error collection-remove-404\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'collection-remove-404: Item not found.' );\n\t\t}\n\n\t\tthis._items.splice( index, 1 );\n\t\tthis._itemMap.delete( id );\n\n\t\tconst externalItem = this._bindToInternalToExternalMap.get( item );\n\t\tthis._bindToInternalToExternalMap.delete( item );\n\t\tthis._bindToExternalToInternalMap.delete( externalItem );\n\n\t\tthis.fire( 'remove', item );\n\n\t\treturn item;\n\t}\n\n\t/**\n\t * Executes the callback for each item in the collection and composes an array or values returned by this callback.\n\t *\n\t * @param {Function} callback\n\t * @param {Object} callback.item\n\t * @param {Number} callback.index\n\t * @params {Object} ctx Context in which the `callback` will be called.\n\t * @returns {Array} The result of mapping.\n\t */\n\tmap( callback, ctx ) {\n\t\treturn this._items.map( callback, ctx );\n\t}\n\n\t/**\n\t * Finds the first item in the collection for which the `callback` returns a true value.\n\t *\n\t * @param {Function} callback\n\t * @param {Object} callback.item\n\t * @param {Number} callback.index\n\t * @returns {Object} The item for which `callback` returned a true value.\n\t * @params {Object} ctx Context in which the `callback` will be called.\n\t */\n\tfind( callback, ctx ) {\n\t\treturn this._items.find( callback, ctx );\n\t}\n\n\t/**\n\t * Returns an array with items for which the `callback` returned a true value.\n\t *\n\t * @param {Function} callback\n\t * @param {Object} callback.item\n\t * @param {Number} callback.index\n\t * @params {Object} ctx Context in which the `callback` will be called.\n\t * @returns {Object[]} The array with matching items.\n\t */\n\tfilter( callback, ctx ) {\n\t\treturn this._items.filter( callback, ctx );\n\t}\n\n\t/**\n\t * Removes all items from the collection and destroys the binding created using\n\t * {@link #bindTo}.\n\t */\n\tclear() {\n\t\tif ( this._bindToCollection ) {\n\t\t\tthis.stopListening( this._bindToCollection );\n\t\t\tthis._bindToCollection = null;\n\t\t}\n\n\t\twhile ( this.length ) {\n\t\t\tthis.remove( 0 );\n\t\t}\n\t}\n\n\t/**\n\t * Binds and synchronizes the collection with another one.\n\t *\n\t * The binding can be a simple factory:\n\t *\n\t *\t\tclass FactoryClass {\n\t *\t\t\tconstructor( data ) {\n\t *\t\t\t\tthis.label = data.label;\n\t *\t\t\t}\n\t *\t\t}\n\t *\n\t *\t\tconst source = new Collection( { idProperty: 'label' } );\n\t *\t\tconst target = new Collection();\n\t *\n\t *\t\ttarget.bindTo( source ).as( FactoryClass );\n\t *\n\t *\t\tsource.add( { label: 'foo' } );\n\t *\t\tsource.add( { label: 'bar' } );\n\t *\n\t *\t\tconsole.log( target.length ); // 2\n\t *\t\tconsole.log( target.get( 1 ).label ); // 'bar'\n\t *\n\t *\t\tsource.remove( 0 );\n\t *\t\tconsole.log( target.length ); // 1\n\t *\t\tconsole.log( target.get( 0 ).label ); // 'bar'\n\t *\n\t * or the factory driven by a custom callback:\n\t *\n\t *\t\tclass FooClass {\n\t *\t\t\tconstructor( data ) {\n\t *\t\t\t\tthis.label = data.label;\n\t *\t\t\t}\n\t *\t\t}\n\t *\n\t *\t\tclass BarClass {\n\t *\t\t\tconstructor( data ) {\n\t *\t\t\t\tthis.label = data.label;\n\t *\t\t\t}\n\t *\t\t}\n\t *\n\t *\t\tconst source = new Collection( { idProperty: 'label' } );\n\t *\t\tconst target = new Collection();\n\t *\n\t *\t\ttarget.bindTo( source ).using( ( item ) => {\n\t *\t\t\tif ( item.label == 'foo' ) {\n\t *\t\t\t\treturn new FooClass( item );\n\t *\t\t\t} else {\n\t *\t\t\t\treturn new BarClass( item );\n\t *\t\t\t}\n\t *\t\t} );\n\t *\n\t *\t\tsource.add( { label: 'foo' } );\n\t *\t\tsource.add( { label: 'bar' } );\n\t *\n\t *\t\tconsole.log( target.length ); // 2\n\t *\t\tconsole.log( target.get( 0 ) instanceof FooClass ); // true\n\t *\t\tconsole.log( target.get( 1 ) instanceof BarClass ); // true\n\t *\n\t * or the factory out of property name:\n\t *\n\t *\t\tconst source = new Collection( { idProperty: 'label' } );\n\t *\t\tconst target = new Collection();\n\t *\n\t *\t\ttarget.bindTo( source ).using( 'label' );\n\t *\n\t *\t\tsource.add( { label: { value: 'foo' } } );\n\t *\t\tsource.add( { label: { value: 'bar' } } );\n\t *\n\t *\t\tconsole.log( target.length ); // 2\n\t *\t\tconsole.log( target.get( 0 ).value ); // 'foo'\n\t *\t\tconsole.log( target.get( 1 ).value ); // 'bar'\n\t *\n\t * **Note**: {@link #clear} can be used to break the binding.\n\t *\n\t * @param {module:utils/collection~Collection} collection A collection to be bound.\n\t * @returns {Object}\n\t * @returns {module:utils/collection~Collection#bindTo#as} return.as\n\t * @returns {module:utils/collection~Collection#bindTo#using} return.using\n\t */\n\tbindTo( externalCollection ) {\n\t\tif ( this._bindToCollection ) {\n\t\t\t/**\n\t\t\t * The collection cannot be bound more than once.\n\t\t\t *\n\t\t\t * @error collection-bind-to-rebind\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'collection-bind-to-rebind: The collection cannot be bound more than once.' );\n\t\t}\n\n\t\tthis._bindToCollection = externalCollection;\n\n\t\treturn {\n\t\t\t/**\n\t\t\t * Creates the class factory binding.\n\t\t\t *\n\t\t\t * @static\n\t\t\t * @param {Function} Class Specifies which class factory is to be initialized.\n\t\t\t */\n\t\t\tas: ( Class ) => {\n\t\t\t\tthis._setUpBindToBinding( item => new Class( item ) );\n\t\t\t},\n\n\t\t\t/**\n\t\t\t * Creates callback or property binding.\n\t\t\t *\n\t\t\t * @static\n\t\t\t * @param {Function|String} callbackOrProperty When the function is passed, it is used to\n\t\t\t * produce the items. When the string is provided, the property value is used to create\n\t\t\t * the bound collection items.\n\t\t\t */\n\t\t\tusing: ( callbackOrProperty ) => {\n\t\t\t\tif ( typeof callbackOrProperty == 'function' ) {\n\t\t\t\t\tthis._setUpBindToBinding( item => callbackOrProperty( item ) );\n\t\t\t\t} else {\n\t\t\t\t\tthis._setUpBindToBinding( item => item[ callbackOrProperty ] );\n\t\t\t\t}\n\t\t\t}\n\t\t};\n\t}\n\n\t/**\n\t * Finalizes and activates a binding initiated by {#bindTo}.\n\t *\n\t * @protected\n\t * @param {Function} factory A function which produces collection items.\n\t */\n\t_setUpBindToBinding( factory ) {\n\t\tconst externalCollection = this._bindToCollection;\n\n\t\t// Adds the item to the collection once a change has been done to the external collection.\n\t\t//\n\t\t// @private\n\t\tconst addItem = ( evt, externalItem, index ) => {\n\t\t\tconst isExternalBoundToThis = externalCollection._bindToCollection == this;\n\t\t\tconst externalItemBound = externalCollection._bindToInternalToExternalMap.get( externalItem );\n\n\t\t\t// If an external collection is bound to this collection, which makes it a 2–way binding,\n\t\t\t// and the particular external collection item is already bound, don't add it here.\n\t\t\t// The external item has been created **out of this collection's item** and (re)adding it will\n\t\t\t// cause a loop.\n\t\t\tif ( isExternalBoundToThis && externalItemBound ) {\n\t\t\t\tthis._bindToExternalToInternalMap.set( externalItem, externalItemBound );\n\t\t\t\tthis._bindToInternalToExternalMap.set( externalItemBound, externalItem );\n\t\t\t} else {\n\t\t\t\tconst item = factory( externalItem );\n\n\t\t\t\tthis._bindToExternalToInternalMap.set( externalItem, item );\n\t\t\t\tthis._bindToInternalToExternalMap.set( item, externalItem );\n\n\t\t\t\tthis.add( item, index );\n\t\t\t}\n\t\t};\n\n\t\t// Load the initial content of the collection.\n\t\tfor ( let externalItem of externalCollection ) {\n\t\t\taddItem( null, externalItem );\n\t\t}\n\n\t\t// Synchronize the with collection as new items are added.\n\t\tthis.listenTo( externalCollection, 'add', addItem );\n\n\t\t// Synchronize the with collection as new items are removed.\n\t\tthis.listenTo( externalCollection, 'remove', ( evt, externalItem ) => {\n\t\t\tconst item = this._bindToExternalToInternalMap.get( externalItem );\n\n\t\t\tif ( item ) {\n\t\t\t\tthis.remove( item );\n\t\t\t}\n\t\t} );\n\t}\n\n\t/**\n\t * Collection iterator.\n\t */\n\t[ Symbol.iterator ]() {\n\t\treturn this._items[ Symbol.iterator ]();\n\t}\n\n\t/**\n\t * Fired when an item is added to the collection.\n\t *\n\t * @event add\n\t * @param {Object} item The added item.\n\t */\n\n\t/**\n\t * Fired when an item is removed from the collection.\n\t *\n\t * @event remove\n\t * @param {Object} item The removed item.\n\t */\n}\n\nmix( Collection, EmitterMixin );\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/collection.js\n// module id = 78\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/dom/emittermixin\n */\n\nimport EmitterMixin from '../emittermixin';\nimport { _getEmitterListenedTo, _setEmitterId } from '../emittermixin';\nimport uid from '../uid';\nimport extend from '../lib/lodash/extend';\nimport isNative from '../lib/lodash/isNative';\n\n/**\n * Mixin that injects the DOM events API into its host. It provides the API\n * compatible with {@link module:utils/emittermixin~EmitterMixin}.\n *\n * DOM emitter mixin is by default available in the {@link module:ui/view~View} class,\n * but it can also be mixed into any other class:\n *\n *\t\timport mix from '../utils/mix.js';\n *\t\timport DomEmitterMixin from '../utils/dom/emittermixin.js';\n *\n *\t\tclass SomeView {}\n *\t\tmix( SomeView, DomEmitterMixin );\n *\n *\t\tconst view = new SomeView();\n *\t\tview.listenTo( domElement, ( evt, domEvt ) => {\n *\t\t\tconsole.log( evt, domEvt );\n *\t\t} );\n *\n * @mixin module:utils/dom/emittermixin~EmitterMixin\n * @mixes module:utils/emittermixin~EmitterMixin\n * @implements module:utils/dom/emittermixin~Emitter\n */\nconst DomEmitterMixin = extend( {}, EmitterMixin, {\n\t/**\n\t * Registers a callback function to be executed when an event is fired in a specific Emitter or DOM Node.\n\t * It is backwards compatible with {@link module:utils/emittermixin~EmitterMixin#listenTo}.\n\t *\n\t * @param {module:utils/emittermixin~Emitter|Node} emitter The object that fires the event.\n\t * @param {String} event The name of the event.\n\t * @param {Function} callback The function to be called on event.\n\t * @param {Object} [options={}] Additional options.\n\t * @param {module:utils/priorities~PriorityString|Number} [options.priority='normal'] The priority of this event callback. The higher\n\t * the priority value the sooner the callback will be fired. Events having the same priority are called in the\n\t * order they were added.\n\t * @param {Object} [options.context] The object that represents `this` in the callback. Defaults to the object firing the event.\n\t * @param {Boolean} [options.useCapture=false] Indicates that events of this type will be dispatched to the registered\n\t * listener before being dispatched to any EventTarget beneath it in the DOM tree.\n\t *\n\t * @method module:utils/dom/emittermixin~EmitterMixin#listenTo\n\t */\n\tlistenTo( ...args ) {\n\t\tconst emitter = args[ 0 ];\n\n\t\t// Check if emitter is an instance of DOM Node. If so, replace the argument with\n\t\t// corresponding ProxyEmitter (or create one if not existing).\n\t\tif ( isDomNode( emitter ) ) {\n\t\t\targs[ 0 ] = this._getProxyEmitter( emitter ) || new ProxyEmitter( emitter );\n\t\t}\n\n\t\t// Execute parent class method with Emitter (or ProxyEmitter) instance.\n\t\tEmitterMixin.listenTo.apply( this, args );\n\t},\n\n\t/**\n\t * Stops listening for events. It can be used at different levels:\n\t * It is backwards compatible with {@link module:utils/emittermixin~EmitterMixin#listenTo}.\n\t *\n\t * * To stop listening to a specific callback.\n\t * * To stop listening to a specific event.\n\t * * To stop listening to all events fired by a specific object.\n\t * * To stop listening to all events fired by all object.\n\t *\n\t * @param {module:utils/emittermixin~Emitter|Node} [emitter] The object to stop listening to. If omitted, stops it for all objects.\n\t * @param {String} [event] (Requires the `emitter`) The name of the event to stop listening to. If omitted, stops it\n\t * for all events from `emitter`.\n\t * @param {Function} [callback] (Requires the `event`) The function to be removed from the call list for the given\n\t * `event`.\n\t *\n\t * @method module:utils/dom/emittermixin~EmitterMixin#stopListening\n\t */\n\tstopListening( ...args ) {\n\t\tconst emitter = args[ 0 ];\n\n\t\t// Check if emitter is an instance of DOM Node. If so, replace the argument with corresponding ProxyEmitter.\n\t\tif ( isDomNode( emitter ) ) {\n\t\t\tlet proxy = this._getProxyEmitter( emitter );\n\n\t\t\t// Element has no listeners.\n\t\t\tif ( !proxy ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\targs[ 0 ] = proxy;\n\t\t}\n\n\t\t// Execute parent class method with Emitter (or ProxyEmitter) instance.\n\t\tEmitterMixin.stopListening.apply( this, args );\n\t},\n\n\t/**\n\t * Retrieves ProxyEmitter instance for given DOM Node residing in this Host.\n\t *\n\t * @param {Node} node DOM Node of the ProxyEmitter.\n\t * @method module:utils/dom/emittermixin~EmitterMixin#_getProxyEmitter\n\t * @return {module:utils/dom/emittermixin~ProxyEmitter} ProxyEmitter instance or null.\n\t */\n\t_getProxyEmitter( node ) {\n\t\treturn _getEmitterListenedTo( this, getNodeUID( node ) );\n\t}\n} );\n\nexport default DomEmitterMixin;\n\n/**\n * Creates a ProxyEmitter instance. Such an instance is a bridge between a DOM Node firing events\n * and any Host listening to them. It is backwards compatible with {@link module:utils/emittermixin~EmitterMixin#on}.\n *\n *                                  listenTo( click, ... )\n *                    +-----------------------------------------+\n *                    |              stopListening( ... )       |\n *     +----------------------------+                           |             addEventListener( click, ... )\n *     | Host                       |                           |   +---------------------------------------------+\n *     +----------------------------+                           |   |       removeEventListener( click, ... )     |\n *     | _listeningTo: {            |                +----------v-------------+                                   |\n *     |   UID: {                   |                | ProxyEmitter           |                                   |\n *     |     emitter: ProxyEmitter, |                +------------------------+                      +------------v----------+\n *     |     callbacks: {           |                | events: {              |                      | Node (HTMLElement)    |\n *     |       click: [ callbacks ] |                |   click: [ callbacks ] |                      +-----------------------+\n *     |     }                      |                | },                     |                      | data-ck-expando: UID  |\n *     |   }                        |                | _domNode: Node,        |                      +-----------------------+\n *     | }                          |                | _domListeners: {},     |                                   |\n *     | +------------------------+ |                | _emitterId: UID        |                                   |\n *     | | DomEmitterMixin        | |                +--------------^---------+                                   |\n *     | +------------------------+ |                           |   |                                             |\n *     +--------------^-------------+                           |   +---------------------------------------------+\n *                    |                                         |                  click (DOM Event)\n *                    +-----------------------------------------+\n *                                fire( click, DOM Event )\n *\n * @mixes module:utils/emittermixin~EmitterMixin\n * @implements module:utils/dom/emittermixin~Emitter\n * @private\n */\nclass ProxyEmitter {\n\t/**\n\t * @param {Node} node DOM Node that fires events.\n\t * @returns {Object} ProxyEmitter instance bound to the DOM Node.\n\t */\n\tconstructor( node ) {\n\t\t// Set emitter ID to match DOM Node \"expando\" property.\n\t\t_setEmitterId( this, getNodeUID( node ) );\n\n\t\t// Remember the DOM Node this ProxyEmitter is bound to.\n\t\tthis._domNode = node;\n\t}\n}\n\nextend( ProxyEmitter.prototype, EmitterMixin, {\n\t/**\n\t * Collection of native DOM listeners.\n\t *\n\t * @private\n\t * @member {Object} module:utils/dom/emittermixin~ProxyEmitter#_domListeners\n\t */\n\n\t/**\n\t * Registers a callback function to be executed when an event is fired.\n\t *\n\t * It attaches a native DOM listener to the DOM Node. When fired,\n\t * a corresponding Emitter event will also fire with DOM Event object as an argument.\n\t *\n\t * @param {String} event The name of the event.\n\t * @param {Function} callback The function to be called on event.\n\t * @param {Object} [options={}] Additional options.\n\t * @param {module:utils/priorities~PriorityString|Number} [options.priority='normal'] The priority of this event callback. The higher\n\t * the priority value the sooner the callback will be fired. Events having the same priority are called in the\n\t * order they were added.\n\t * @param {Object} [options.context] The object that represents `this` in the callback. Defaults to the object firing the event.\n\t * @param {Boolean} [options.useCapture=false] Indicates that events of this type will be dispatched to the registered\n\t * listener before being dispatched to any EventTarget beneath it in the DOM tree.\n\t *\n\t * @method module:utils/dom/emittermixin~ProxyEmitter#on\n\t */\n\ton( event, callback, options = {} ) {\n\t\t// Execute parent class method first.\n\t\tEmitterMixin.on.apply( this, arguments );\n\n\t\t// If the DOM Listener for given event already exist it is pointless\n\t\t// to attach another one.\n\t\tif ( this._domListeners && this._domListeners[ event ] ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst domListener = this._createDomListener( event );\n\n\t\t// Attach the native DOM listener to DOM Node.\n\t\tthis._domNode.addEventListener( event, domListener, !!options.useCapture );\n\n\t\tif ( !this._domListeners ) {\n\t\t\tthis._domListeners = {};\n\t\t}\n\n\t\t// Store the native DOM listener in this ProxyEmitter. It will be helpful\n\t\t// when stopping listening to the event.\n\t\tthis._domListeners[ event ] = domListener;\n\t},\n\n\t/**\n\t * Stops executing the callback on the given event.\n\t *\n\t * @param {String} event The name of the event.\n\t * @param {Function} callback The function to stop being called.\n\t * @param {Object} [context] The context object to be removed, pared with the given callback. To handle cases where\n\t * the same callback is used several times with different contexts.\n\t *\n\t * @method module:utils/dom/emittermixin~ProxyEmitter#off\n\t */\n\toff( event ) {\n\t\t// Execute parent class method first.\n\t\tEmitterMixin.off.apply( this, arguments );\n\n\t\tlet events;\n\n\t\t// Remove native DOM listeners which are orphans. If no callbacks\n\t\t// are awaiting given event, detach native DOM listener from DOM Node.\n\t\t// See: {@link on}.\n\n\t\tif ( this._domListeners[ event ] && ( !( events = this._events[ event ] ) || !events.callbacks.length ) ) {\n\t\t\tthis._domListeners[ event ].removeListener();\n\t\t}\n\t},\n\n\t/**\n\t * Create a native DOM listener callback. When the native DOM event\n\t * is fired it will fire corresponding event on this ProxyEmitter.\n\t * Note: A native DOM Event is passed as an argument.\n\t *\n\t * @private\n\t * @param {String} event\n\t *\n\t * @method module:utils/dom/emittermixin~ProxyEmitter#_createDomListener\n\t * @returns {Function} The DOM listener callback.\n\t */\n\t_createDomListener( event ) {\n\t\tconst domListener = domEvt => {\n\t\t\tthis.fire( event, domEvt );\n\t\t};\n\n\t\t// Supply the DOM listener callback with a function that will help\n\t\t// detach it from the DOM Node, when it is no longer necessary.\n\t\t// See: {@link off}.\n\t\tdomListener.removeListener = () => {\n\t\t\tthis._domNode.removeEventListener( event, domListener );\n\t\t\tdelete this._domListeners[ event ];\n\t\t};\n\n\t\treturn domListener;\n\t}\n} );\n\n// Gets an unique DOM Node identifier. The identifier will be set if not defined.\n//\n// @private\n// @param {Node} node\n// @return {String} UID for given DOM Node.\nfunction getNodeUID( node ) {\n\treturn node[ 'data-ck-expando' ] || ( node[ 'data-ck-expando' ] = uid() );\n}\n\n// Checks (naively) if given node is native DOM Node.\n//\n// @private\n// @param {Node} node\n// @return {Boolean} True when native DOM Node.\nfunction isDomNode( node ) {\n\treturn node && isNative( node.addEventListener );\n}\n\n/**\n * Interface representing classes which mix in {@link module:utils/dom/emittermixin~EmitterMixin}.\n *\n * @interface Emitter\n */\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/dom/emittermixin.js\n// module id = 79\n// module chunks = 0","import listCacheClear from './_listCacheClear';\nimport listCacheDelete from './_listCacheDelete';\nimport listCacheGet from './_listCacheGet';\nimport listCacheHas from './_listCacheHas';\nimport listCacheSet from './_listCacheSet';\n\n/**\n * Creates an list cache object.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\nfunction ListCache(entries) {\n  var index = -1,\n      length = entries ? entries.length : 0;\n\n  this.clear();\n  while (++index < length) {\n    var entry = entries[index];\n    this.set(entry[0], entry[1]);\n  }\n}\n\n// Add methods to `ListCache`.\nListCache.prototype.clear = listCacheClear;\nListCache.prototype['delete'] = listCacheDelete;\nListCache.prototype.get = listCacheGet;\nListCache.prototype.has = listCacheHas;\nListCache.prototype.set = listCacheSet;\n\nexport default ListCache;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_ListCache.js\n// module id = 80\n// module chunks = 0","import MapCache from './_MapCache';\nimport setCacheAdd from './_setCacheAdd';\nimport setCacheHas from './_setCacheHas';\n\n/**\n *\n * Creates an array cache object to store unique values.\n *\n * @private\n * @constructor\n * @param {Array} [values] The values to cache.\n */\nfunction SetCache(values) {\n  var index = -1,\n      length = values ? values.length : 0;\n\n  this.__data__ = new MapCache;\n  while (++index < length) {\n    this.add(values[index]);\n  }\n}\n\n// Add methods to `SetCache`.\nSetCache.prototype.add = SetCache.prototype.push = setCacheAdd;\nSetCache.prototype.has = setCacheHas;\n\nexport default SetCache;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_SetCache.js\n// module id = 81\n// module chunks = 0","/**\n * A specialized version of `_.filter` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to iterate over.\n * @param {Function} predicate The function invoked per iteration.\n * @returns {Array} Returns the new filtered array.\n */\nfunction arrayFilter(array, predicate) {\n  var index = -1,\n      length = array.length,\n      resIndex = 0,\n      result = [];\n\n  while (++index < length) {\n    var value = array[index];\n    if (predicate(value, index, array)) {\n      result[resIndex++] = value;\n    }\n  }\n  return result;\n}\n\nexport default arrayFilter;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_arrayFilter.js\n// module id = 82\n// module chunks = 0","/**\n * Appends the elements of `values` to `array`.\n *\n * @private\n * @param {Array} array The array to modify.\n * @param {Array} values The values to append.\n * @returns {Array} Returns `array`.\n */\nfunction arrayPush(array, values) {\n  var index = -1,\n      length = values.length,\n      offset = array.length;\n\n  while (++index < length) {\n    array[offset + index] = values[index];\n  }\n  return array;\n}\n\nexport default arrayPush;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_arrayPush.js\n// module id = 83\n// module chunks = 0","import eq from './eq';\n\n/**\n * Gets the index at which the `key` is found in `array` of key-value pairs.\n *\n * @private\n * @param {Array} array The array to search.\n * @param {*} key The key to search for.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\nfunction assocIndexOf(array, key) {\n  var length = array.length;\n  while (length--) {\n    if (eq(array[length][0], key)) {\n      return length;\n    }\n  }\n  return -1;\n}\n\nexport default assocIndexOf;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_assocIndexOf.js\n// module id = 84\n// module chunks = 0","import baseSortedIndexBy from './_baseSortedIndexBy';\nimport identity from './identity';\nimport isSymbol from './isSymbol';\n\n/** Used as references for the maximum length and index of an array. */\nvar MAX_ARRAY_LENGTH = 4294967295,\n    HALF_MAX_ARRAY_LENGTH = MAX_ARRAY_LENGTH >>> 1;\n\n/**\n * The base implementation of `_.sortedIndex` and `_.sortedLastIndex` which\n * performs a binary search of `array` to determine the index at which `value`\n * should be inserted into `array` in order to maintain its sort order.\n *\n * @private\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @param {boolean} [retHighest] Specify returning the highest qualified index.\n * @returns {number} Returns the index at which `value` should be inserted\n *  into `array`.\n */\nfunction baseSortedIndex(array, value, retHighest) {\n  var low = 0,\n      high = array ? array.length : low;\n\n  if (typeof value == 'number' && value === value && high <= HALF_MAX_ARRAY_LENGTH) {\n    while (low < high) {\n      var mid = (low + high) >>> 1,\n          computed = array[mid];\n\n      if (computed !== null && !isSymbol(computed) &&\n          (retHighest ? (computed <= value) : (computed < value))) {\n        low = mid + 1;\n      } else {\n        high = mid;\n      }\n    }\n    return high;\n  }\n  return baseSortedIndexBy(array, value, identity, retHighest);\n}\n\nexport default baseSortedIndex;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_baseSortedIndex.js\n// module id = 85\n// module chunks = 0","import baseSlice from './_baseSlice';\n\n/**\n * The base implementation of methods like `_.dropWhile` and `_.takeWhile`\n * without support for iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to query.\n * @param {Function} predicate The function invoked per iteration.\n * @param {boolean} [isDrop] Specify dropping elements instead of taking them.\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {Array} Returns the slice of `array`.\n */\nfunction baseWhile(array, predicate, isDrop, fromRight) {\n  var length = array.length,\n      index = fromRight ? length : -1;\n\n  while ((fromRight ? index-- : ++index < length) &&\n    predicate(array[index], index, array)) {}\n\n  return isDrop\n    ? baseSlice(array, (fromRight ? 0 : index), (fromRight ? index + 1 : length))\n    : baseSlice(array, (fromRight ? index + 1 : 0), (fromRight ? length : index));\n}\n\nexport default baseWhile;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_baseWhile.js\n// module id = 86\n// module chunks = 0","import isArray from './isArray';\nimport stringToPath from './_stringToPath';\n\n/**\n * Casts `value` to a path array if it's not one.\n *\n * @private\n * @param {*} value The value to inspect.\n * @returns {Array} Returns the cast property path array.\n */\nfunction castPath(value) {\n  return isArray(value) ? value : stringToPath(value);\n}\n\nexport default castPath;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_castPath.js\n// module id = 87\n// module chunks = 0","import isKeyable from './_isKeyable';\n\n/**\n * Gets the data for `map`.\n *\n * @private\n * @param {Object} map The map to query.\n * @param {string} key The reference key.\n * @returns {*} Returns the map data.\n */\nfunction getMapData(map, key) {\n  var data = map.__data__;\n  return isKeyable(key)\n    ? data[typeof key == 'string' ? 'string' : 'hash']\n    : data.map;\n}\n\nexport default getMapData;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_getMapData.js\n// module id = 88\n// module chunks = 0","/**\n * Checks if `value` is a host object in IE < 9.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a host object, else `false`.\n */\nfunction isHostObject(value) {\n  // Many host objects are `Object` objects that can coerce to strings\n  // despite having improperly defined `toString` methods.\n  var result = false;\n  if (value != null && typeof value.toString != 'function') {\n    try {\n      result = !!(value + '');\n    } catch (e) {}\n  }\n  return result;\n}\n\nexport default isHostObject;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_isHostObject.js\n// module id = 89\n// module chunks = 0","import eq from './eq';\nimport isArrayLike from './isArrayLike';\nimport isIndex from './_isIndex';\nimport isObject from './isObject';\n\n/**\n * Checks if the given arguments are from an iteratee call.\n *\n * @private\n * @param {*} value The potential iteratee value argument.\n * @param {*} index The potential iteratee index or key argument.\n * @param {*} object The potential iteratee object argument.\n * @returns {boolean} Returns `true` if the arguments are from an iteratee call,\n *  else `false`.\n */\nfunction isIterateeCall(value, index, object) {\n  if (!isObject(object)) {\n    return false;\n  }\n  var type = typeof index;\n  if (type == 'number'\n        ? (isArrayLike(object) && isIndex(index, object.length))\n        : (type == 'string' && index in object)\n      ) {\n    return eq(object[index], value);\n  }\n  return false;\n}\n\nexport default isIterateeCall;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_isIterateeCall.js\n// module id = 90\n// module chunks = 0","/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/**\n * Checks if `value` is likely a prototype object.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a prototype, else `false`.\n */\nfunction isPrototype(value) {\n  var Ctor = value && value.constructor,\n      proto = (typeof Ctor == 'function' && Ctor.prototype) || objectProto;\n\n  return value === proto;\n}\n\nexport default isPrototype;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_isPrototype.js\n// module id = 91\n// module chunks = 0","import getNative from './_getNative';\n\n/* Built-in method references that are verified to be native. */\nvar nativeCreate = getNative(Object, 'create');\n\nexport default nativeCreate;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_nativeCreate.js\n// module id = 92\n// module chunks = 0","/**\n * Converts `set` to an array of its values.\n *\n * @private\n * @param {Object} set The set to convert.\n * @returns {Array} Returns the values.\n */\nfunction setToArray(set) {\n  var index = -1,\n      result = Array(set.size);\n\n  set.forEach(function(value) {\n    result[++index] = value;\n  });\n  return result;\n}\n\nexport default setToArray;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_setToArray.js\n// module id = 93\n// module chunks = 0","import baseClone from './_baseClone';\n\n/**\n * Creates a shallow clone of `value`.\n *\n * **Note:** This method is loosely based on the\n * [structured clone algorithm](https://mdn.io/Structured_clone_algorithm)\n * and supports cloning arrays, array buffers, booleans, date objects, maps,\n * numbers, `Object` objects, regexes, sets, strings, symbols, and typed\n * arrays. The own enumerable properties of `arguments` objects are cloned\n * as plain objects. An empty object is returned for uncloneable values such\n * as error objects, functions, DOM nodes, and WeakMaps.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to clone.\n * @returns {*} Returns the cloned value.\n * @see _.cloneDeep\n * @example\n *\n * var objects = [{ 'a': 1 }, { 'b': 2 }];\n *\n * var shallow = _.clone(objects);\n * console.log(shallow[0] === objects[0]);\n * // => true\n */\nfunction clone(value) {\n  return baseClone(value, false, true);\n}\n\nexport default clone;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/clone.js\n// module id = 94\n// module chunks = 0","import getLength from './_getLength';\nimport isFunction from './isFunction';\nimport isLength from './isLength';\n\n/**\n * Checks if `value` is array-like. A value is considered array-like if it's\n * not a function and has a `value.length` that's an integer greater than or\n * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is array-like, else `false`.\n * @example\n *\n * _.isArrayLike([1, 2, 3]);\n * // => true\n *\n * _.isArrayLike(document.body.children);\n * // => true\n *\n * _.isArrayLike('abc');\n * // => true\n *\n * _.isArrayLike(_.noop);\n * // => false\n */\nfunction isArrayLike(value) {\n  return value != null && isLength(getLength(value)) && !isFunction(value);\n}\n\nexport default isArrayLike;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/isArrayLike.js\n// module id = 95\n// module chunks = 0","/** Used as references for various `Number` constants. */\nvar MAX_SAFE_INTEGER = 9007199254740991;\n\n/**\n * Checks if `value` is a valid array-like length.\n *\n * **Note:** This function is loosely based on\n * [`ToLength`](http://ecma-international.org/ecma-262/6.0/#sec-tolength).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a valid length,\n *  else `false`.\n * @example\n *\n * _.isLength(3);\n * // => true\n *\n * _.isLength(Number.MIN_VALUE);\n * // => false\n *\n * _.isLength(Infinity);\n * // => false\n *\n * _.isLength('3');\n * // => false\n */\nfunction isLength(value) {\n  return typeof value == 'number' &&\n    value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;\n}\n\nexport default isLength;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/isLength.js\n// module id = 96\n// module chunks = 0","import getPrototype from './_getPrototype';\nimport isHostObject from './_isHostObject';\nimport isObjectLike from './isObjectLike';\n\n/** `Object#toString` result references. */\nvar objectTag = '[object Object]';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to resolve the decompiled source of functions. */\nvar funcToString = Function.prototype.toString;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/** Used to infer the `Object` constructor. */\nvar objectCtorString = funcToString.call(Object);\n\n/**\n * Used to resolve the\n * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)\n * of values.\n */\nvar objectToString = objectProto.toString;\n\n/**\n * Checks if `value` is a plain object, that is, an object created by the\n * `Object` constructor or one with a `[[Prototype]]` of `null`.\n *\n * @static\n * @memberOf _\n * @since 0.8.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a plain object,\n *  else `false`.\n * @example\n *\n * function Foo() {\n *   this.a = 1;\n * }\n *\n * _.isPlainObject(new Foo);\n * // => false\n *\n * _.isPlainObject([1, 2, 3]);\n * // => false\n *\n * _.isPlainObject({ 'x': 0, 'y': 0 });\n * // => true\n *\n * _.isPlainObject(Object.create(null));\n * // => true\n */\nfunction isPlainObject(value) {\n  if (!isObjectLike(value) ||\n      objectToString.call(value) != objectTag || isHostObject(value)) {\n    return false;\n  }\n  var proto = getPrototype(value);\n  if (proto === null) {\n    return true;\n  }\n  var Ctor = hasOwnProperty.call(proto, 'constructor') && proto.constructor;\n  return (typeof Ctor == 'function' &&\n    Ctor instanceof Ctor && funcToString.call(Ctor) == objectCtorString);\n}\n\nexport default isPlainObject;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/isPlainObject.js\n// module id = 97\n// module chunks = 0","import arrayFilter from './_arrayFilter';\nimport arrayMap from './_arrayMap';\nimport baseProperty from './_baseProperty';\nimport baseTimes from './_baseTimes';\nimport isArrayLikeObject from './isArrayLikeObject';\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeMax = Math.max;\n\n/**\n * This method is like `_.zip` except that it accepts an array of grouped\n * elements and creates an array regrouping the elements to their pre-zip\n * configuration.\n *\n * @static\n * @memberOf _\n * @since 1.2.0\n * @category Array\n * @param {Array} array The array of grouped elements to process.\n * @returns {Array} Returns the new array of regrouped elements.\n * @example\n *\n * var zipped = _.zip(['fred', 'barney'], [30, 40], [true, false]);\n * // => [['fred', 30, true], ['barney', 40, false]]\n *\n * _.unzip(zipped);\n * // => [['fred', 'barney'], [30, 40], [true, false]]\n */\nfunction unzip(array) {\n  if (!(array && array.length)) {\n    return [];\n  }\n  var length = 0;\n  array = arrayFilter(array, function(group) {\n    if (isArrayLikeObject(group)) {\n      length = nativeMax(group.length, length);\n      return true;\n    }\n  });\n  return baseTimes(length, function(index) {\n    return arrayMap(array, baseProperty(index));\n  });\n}\n\nexport default unzip;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/unzip.js\n// module id = 98\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module core/command/helpers/getschemavalidranges\n */\n\nimport TreeWalker from '@ckeditor/ckeditor5-engine/src/model/treewalker';\nimport Range from '@ckeditor/ckeditor5-engine/src/model/range';\nimport Position from '@ckeditor/ckeditor5-engine/src/model/position';\n\n/**\n * Walks through given array of ranges and removes parts of them that are not allowed by passed schema to have the\n * attribute set. This is done by breaking a range in two and omitting the not allowed part.\n *\n * @param {String} attribute Attribute key.\n * @param {Array.<module:engine/model/range~Range>} ranges Ranges to be validated.\n * @param {module:engine/model/schema~Schema} schema Document schema.\n * @returns {Array.<module:engine/model/range~Range>} Ranges without invalid parts.\n */\nexport default function getSchemaValidRanges( attribute, ranges, schema ) {\n\tconst validRanges = [];\n\n\tfor ( let range of ranges ) {\n\t\tconst walker = new TreeWalker( { boundaries: range, mergeCharacters: true } );\n\t\tlet step = walker.next();\n\n\t\tlet last = range.start;\n\t\tlet from = range.start;\n\t\tlet to = range.end;\n\n\t\twhile ( !step.done ) {\n\t\t\tconst name = step.value.item.name || '$text';\n\t\t\tconst itemPosition = Position.createBefore( step.value.item );\n\n\t\t\tif ( !schema.check( { name: name, inside: itemPosition, attributes: attribute } ) ) {\n\t\t\t\tif ( !from.isEqual( last ) ) {\n\t\t\t\t\tvalidRanges.push( new Range( from, last ) );\n\t\t\t\t}\n\n\t\t\t\tfrom = walker.position;\n\t\t\t}\n\n\t\t\tlast = walker.position;\n\t\t\tstep = walker.next();\n\t\t}\n\n\t\tif ( from && !from.isEqual( to ) ) {\n\t\t\tvalidRanges.push( new Range( from, to ) );\n\t\t}\n\t}\n\n\treturn validRanges;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-core/src/command/helpers/getschemavalidranges.js\n// module id = 99\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\nimport ViewElement from '../view/element';\nimport ViewText from '../view/text';\nimport ViewRange from '../view/range';\nimport ViewTreeWalker from '../view/treewalker';\nimport viewWriter from '../view/writer';\n\n/**\n * Contains {@link module:engine/model/model model} to {@link module:engine/view/view view} converters for\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher}.\n *\n * @module engine/conversion/model-to-view-converters\n */\n\n/**\n * Function factory, creates a converter that converts node insertion changes from the model to the view.\n * The view element that will be added to the view depends on passed parameter. If {@link module:engine/view/element~Element} was passed,\n * it will be cloned and the copy will be inserted. If `Function` is provided, it is passed all the parameters of the\n * dispatcher's {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:insert insert event}.\n * It's expected that the function returns a {@link module:engine/view/element~Element}.\n * The result of the function will be inserted to the view.\n *\n * The converter automatically consumes corresponding value from consumables list, stops the event (see\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher}) and bind model and view elements.\n *\n *\t\tmodelDispatcher.on( 'insert:paragraph', insertElement( new ViewElement( 'p' ) ) );\n *\n *\t\tmodelDispatcher.on(\n *\t\t\t'insert:myElem',\n *\t\t\tinsertElement( ( data, consumable, conversionApi ) => {\n *\t\t\t\tlet myElem = new ViewElement( 'myElem', { myAttr: true }, new ViewText( 'myText' ) );\n *\n *\t\t\t\t// Do something fancy with myElem using data/consumable/conversionApi ...\n *\n *\t\t\t\treturn myElem;\n *\t\t\t}\n *\t\t) );\n *\n * @param {module:engine/view/element~Element|Function} elementCreator View element, or function returning a view element, which\n * will be inserted.\n * @returns {Function} Insert element event converter.\n */\nexport function insertElement( elementCreator ) {\n\treturn ( evt, data, consumable, conversionApi ) => {\n\t\tconst viewElement = ( elementCreator instanceof ViewElement ) ?\n\t\t\telementCreator.clone( true ) :\n\t\t\telementCreator( data, consumable, conversionApi );\n\n\t\tif ( !viewElement ) {\n\t\t\treturn;\n\t\t}\n\n\t\tif ( !consumable.consume( data.item, 'insert' ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst viewPosition = conversionApi.mapper.toViewPosition( data.range.start );\n\n\t\tconversionApi.mapper.bindElements( data.item, viewElement );\n\t\tviewWriter.insert( viewPosition, viewElement );\n\t};\n}\n\n/**\n * Function factory, creates a default model-to-view converter for text insertion changes.\n *\n * The converter automatically consumes corresponding value from consumables list and stops the event (see\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher}).\n *\n *\t\tmodelDispatcher.on( 'insert:$text', insertText() );\n *\n * @returns {Function} Insert text event converter.\n */\nexport function insertText() {\n\treturn ( evt, data, consumable, conversionApi ) => {\n\t\tif ( !consumable.consume( data.item, 'insert' ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst viewPosition = conversionApi.mapper.toViewPosition( data.range.start );\n\t\tconst viewText = new ViewText( data.item.data );\n\n\t\tviewWriter.insert( viewPosition, viewText );\n\t};\n}\n\n/**\n * Function factory, creates a converter that converts marker adding change to the view ui element.\n * The view ui element that will be added to the view depends on passed parameter. See {@link ~insertElement}.\n * In a case of collapsed range element will not wrap range but separate elements will be placed at the beginning\n * and at the end of the range.\n *\n * **Note:** unlike {@link ~insertElement}, the converter does not bind view element to model, because this converter\n * uses marker as \"model source of data\". This means that view ui element does not have corresponding model element.\n *\n * @param {module:engine/view/uielement~UIElement|Function} elementCreator View ui element, or function returning a view element, which\n * will be inserted.\n * @returns {Function} Insert element event converter.\n */\nexport function insertUIElement( elementCreator ) {\n\treturn ( evt, data, consumable, conversionApi ) => {\n\t\tlet viewStartElement, viewEndElement;\n\n\t\tif ( elementCreator instanceof ViewElement ) {\n\t\t\tviewStartElement = elementCreator.clone( true );\n\t\t\tviewEndElement = elementCreator.clone( true );\n\t\t} else {\n\t\t\tdata.isOpening = true;\n\t\t\tviewStartElement = elementCreator( data, consumable, conversionApi );\n\n\t\t\tdata.isOpening = false;\n\t\t\tviewEndElement = elementCreator( data, consumable, conversionApi );\n\t\t}\n\n\t\tif ( !viewStartElement || !viewEndElement ) {\n\t\t\treturn;\n\t\t}\n\n\t\tif ( !consumable.consume( data.range, 'addMarker' ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst mapper = conversionApi.mapper;\n\n\t\tviewWriter.insert( mapper.toViewPosition( data.range.start ), viewStartElement );\n\n\t\tif ( !data.range.isCollapsed ) {\n\t\t\tviewWriter.insert( mapper.toViewPosition( data.range.end ), viewEndElement );\n\t\t}\n\t};\n}\n\n/**\n * Function factory, creates a converter that converts set/change attribute changes from the model to the view. Attributes\n * from model are converted to the view element attributes in the view. You may provide a custom function to generate a\n * key-value attribute pair to add/change. If not provided, model attributes will be converted to view elements attributes\n * on 1-to-1 basis.\n *\n * **Note:** Provided attribute creator should always return the same `key` for given attribute from the model.\n *\n * The converter automatically consumes corresponding value from consumables list and stops the event (see\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher}).\n *\n *\t\tmodelDispatcher.on( 'addAttribute:customAttr:myElem', setAttribute( ( data ) => {\n *\t\t\t// Change attribute key from `customAttr` to `class` in view.\n *\t\t\tconst key = 'class';\n *\t\t\tlet value = data.attributeNewValue;\n *\n *\t\t\t// Force attribute value to 'empty' if the model element is empty.\n *\t\t\tif ( data.item.childCount === 0 ) {\n *\t\t\t\tvalue = 'empty';\n *\t\t\t}\n *\n *\t\t\t// Return key-value pair.\n *\t\t\treturn { key, value };\n *\t\t} ) );\n *\n * @param {Function} [attributeCreator] Function returning an object with two properties: `key` and `value`, which\n * represents attribute key and attribute value to be set on a {@link module:engine/view/element~Element view element}.\n * The function is passed all the parameters of the\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:addAttribute}\n * or {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:changeAttribute} event.\n * @returns {Function} Set/change attribute converter.\n */\nexport function setAttribute( attributeCreator ) {\n\tattributeCreator = attributeCreator || ( ( value, key ) => ( { value, key } ) );\n\n\treturn ( evt, data, consumable, conversionApi ) => {\n\t\tif ( !consumable.consume( data.item, eventNameToConsumableType( evt.name ) ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst { key, value } = attributeCreator( data.attributeNewValue, data.attributeKey, data, consumable, conversionApi );\n\n\t\tconversionApi.mapper.toViewElement( data.item ).setAttribute( key, value );\n\t};\n}\n\n/**\n * Function factory, creates a converter that converts remove attribute changes from the model to the view. Removes attributes\n * that were converted to the view element attributes in the view. You may provide a custom function to generate a\n * key-value attribute pair to remove. If not provided, model attributes will be removed from view elements on 1-to-1 basis.\n *\n * **Note:** Provided attribute creator should always return the same `key` for given attribute from the model.\n *\n * **Note:** You can use the same attribute creator as in {@link module:engine/conversion/model-to-view-converters~setAttribute}.\n *\n * The converter automatically consumes corresponding value from consumables list and stops the event (see\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher}).\n *\n *\t\tmodelDispatcher.on( 'removeAttribute:customAttr:myElem', removeAttribute( ( data ) => {\n *\t\t\t// Change attribute key from `customAttr` to `class` in view.\n *\t\t\tconst key = 'class';\n *\t\t\tlet value = data.attributeNewValue;\n *\n *\t\t\t// Force attribute value to 'empty' if the model element is empty.\n *\t\t\tif ( data.item.childCount === 0 ) {\n *\t\t\t\tvalue = 'empty';\n *\t\t\t}\n *\n *\t\t\t// Return key-value pair.\n *\t\t\treturn { key, value };\n *\t\t} ) );\n *\n * @param {Function} [attributeCreator] Function returning an object with two properties: `key` and `value`, which\n * represents attribute key and attribute value to be removed from {@link module:engine/view/element~Element view element}.\n * The function is passed all the parameters of the\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:addAttribute addAttribute event}\n * or {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:changeAttribute changeAttribute event}.\n * @returns {Function} Remove attribute converter.\n */\nexport function removeAttribute( attributeCreator ) {\n\tattributeCreator = attributeCreator || ( ( value, key ) => ( { key } ) );\n\n\treturn ( evt, data, consumable, conversionApi ) => {\n\t\tif ( !consumable.consume( data.item, eventNameToConsumableType( evt.name ) ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst { key } = attributeCreator( data.attributeOldValue, data.attributeKey, data, consumable, conversionApi );\n\n\t\tconversionApi.mapper.toViewElement( data.item ).removeAttribute( key );\n\t};\n}\n\n/**\n * Function factory, creates a converter that converts set/change attribute changes from the model to the view. In this case,\n * model attributes are converted to a view element that will be wrapping view nodes which corresponding model nodes had\n * the attribute set. This is useful for attributes like `bold`, which may be set on text nodes in model but are\n * represented as an element in the view:\n *\n *\t\t[paragraph]              MODEL ====> VIEW        <p>\n *\t\t\t|- a {bold: true}                             |- <b>\n *\t\t\t|- b {bold: true}                             |   |- ab\n *\t\t\t|- c                                          |- c\n *\n * The wrapping node depends on passed parameter. If {@link module:engine/view/element~Element} was passed, it will be cloned and\n * the copy will become the wrapping element. If `Function` is provided, it is passed attribute value and then all the parameters of the\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:addAttribute addAttribute event}.\n * It's expected that the function returns a {@link module:engine/view/element~Element}.\n * The result of the function will be the wrapping element.\n * When provided `Function` does not return element, then will be no conversion.\n *\n * The converter automatically consumes corresponding value from consumables list, stops the event (see\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher}).\n *\n *\t\tmodelDispatcher.on( 'addAttribute:bold', wrapItem( new ViewAttributeElement( 'strong' ) ) );\n *\n * @param {module:engine/view/element~Element|Function} elementCreator View element, or function returning a view element, which will\n * be used for wrapping.\n * @returns {Function} Set/change attribute converter.\n */\nexport function wrapItem( elementCreator ) {\n\treturn ( evt, data, consumable, conversionApi ) => {\n\t\tconst viewElement = ( elementCreator instanceof ViewElement ) ?\n\t\t\telementCreator.clone( true ) :\n\t\t\telementCreator( data.attributeNewValue, data, consumable, conversionApi );\n\n\t\tif ( !viewElement ) {\n\t\t\treturn;\n\t\t}\n\n\t\tif ( !consumable.consume( data.item, eventNameToConsumableType( evt.name ) ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\tlet viewRange = conversionApi.mapper.toViewRange( data.range );\n\n\t\t// If this is a change event (because old value is not empty) and the creator is a function (so\n\t\t// it may create different view elements basing on attribute value) we have to create\n\t\t// view element basing on old value and unwrap it before wrapping with a newly created view element.\n\t\tif ( data.attributeOldValue !== null && !( elementCreator instanceof ViewElement ) ) {\n\t\t\tconst oldViewElement = elementCreator( data.attributeOldValue, data, consumable, conversionApi );\n\t\t\tviewRange = viewWriter.unwrap( viewRange, oldViewElement );\n\t\t}\n\n\t\tviewWriter.wrap( viewRange, viewElement );\n\t};\n}\n\n/**\n * Function factory, creates a converter that converts remove attribute changes from the model to the view. It assumes, that\n * attributes from model were converted to elements in the view. This converter will unwrap view nodes from corresponding\n * view element if given attribute was removed.\n *\n * The view element type that will be unwrapped depends on passed parameter.\n * If {@link module:engine/view/element~Element} was passed, it will be used to look for similar element in the view for unwrapping.\n * If `Function` is provided, it is passed all the parameters of the\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:addAttribute addAttribute event}.\n * It's expected that the function returns a {@link module:engine/view/element~Element}.\n * The result of the function will be used to look for similar element in the view for unwrapping.\n *\n * The converter automatically consumes corresponding value from consumables list, stops the event (see\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher}) and bind model and view elements.\n *\n *\t\tmodelDispatcher.on( 'removeAttribute:bold', unwrapItem( new ViewAttributeElement( 'strong' ) ) );\n *\n * @see module:engine/conversion/model-to-view-converters~wrapItem\n * @param {module:engine/view/element~Element|Function} elementCreator View element, or function returning a view element, which will\n * be used for unwrapping.\n * @returns {Function} Remove attribute converter.\n */\nexport function unwrapItem( elementCreator ) {\n\treturn ( evt, data, consumable, conversionApi ) => {\n\t\tconst viewElement = ( elementCreator instanceof ViewElement ) ?\n\t\t\telementCreator.clone( true ) :\n\t\t\telementCreator( data.attributeOldValue, data, consumable, conversionApi );\n\n\t\tif ( !viewElement ) {\n\t\t\treturn;\n\t\t}\n\n\t\tif ( !consumable.consume( data.item, eventNameToConsumableType( evt.name ) ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst viewRange = conversionApi.mapper.toViewRange( data.range );\n\n\t\tviewWriter.unwrap( viewRange, viewElement );\n\t};\n}\n\n/**\n * Function factory, creates a converter that wraps model range.\n *\n * In contrary to {@link module:engine/conversion/model-to-view-converters~wrapItem}, this converter's input is a\n * {@link module:engine/model/range~Range model range} (not changed model item). The model range is mapped\n * to {@link module:engine/view/range~Range view range} and then, view items within that view range are wrapped in a\n * {@link module:engine/view/attributeelement~AttributeElement view attribute element}. Note, that `elementCreator`\n * function of this converter takes different parameters that `elementCreator` of `wrapItem`.\n *\n * Let's assume following model and view. `{}` represents a range that is added as a marker with `searchResult` name.\n * The range represents a result of search `ab` string in the model document. The range has to be visualized in view.\n *\n *\t\t[paragraph]              MODEL ====> VIEW        <p>\n *\t\t\t|- {a                                         |- <span class=\"searchResult\">\n *\t\t\t|-  b}                                        |   |- ab\n *\t\t\t|-  c                                         |- c\n *\n * The wrapping node depends on passed parameter. If {@link module:engine/view/attributeelement~AttributeElement} was passed, it\n * will be cloned and the copy will become the wrapping element. If `Function` is provided, it is passed all the parameters of the\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:addMarker addMarker event}. It's expected\n * that the function returns a {@link module:engine/view/attributeelement~AttributeElement}. The result of the function will be the\n * wrapping element. When provided `Function` does not return element, then will be no conversion.\n *\n * The converter automatically consumes corresponding value from consumables list, stops the event (see\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher}).\n *\n *\t\tmodelDispatcher.on( 'addMarker:searchResult', wrapRange( new ViewAttributeElement( 'span', { class: 'searchResult' } ) ) );\n *\n * @param {module:engine/view/attributeelement~AttributeElement|Function} elementCreator View attribute element, or function returning\n * a view attribute element, which will be used for wrapping.\n * @returns {Function} Wrap range converter.\n */\nexport function wrapRange( elementCreator ) {\n\treturn ( evt, data, consumable, conversionApi ) => {\n\t\tconst viewElement = ( elementCreator instanceof ViewElement ) ?\n\t\t\telementCreator.clone( true ) :\n\t\t\telementCreator( data, consumable, conversionApi );\n\n\t\tif ( !viewElement ) {\n\t\t\treturn;\n\t\t}\n\n\t\tif ( !consumable.consume( data.range, 'addMarker' ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst viewRange = conversionApi.mapper.toViewRange( data.range );\n\t\tconst flatViewRanges = viewWriter.breakViewRangePerContainer( viewRange );\n\n\t\tfor ( let range of flatViewRanges ) {\n\t\t\tviewWriter.wrap( range, viewElement );\n\t\t}\n\t};\n}\n\n/**\n * Function factory, creates a converter that converts removing of a model marker to view attribute element.\n * This converter will unwrap view nodes from corresponding view range.\n *\n * The view element that will be unwrapped depends on passed parameter. If {@link module:engine/view/attributeelement~AttributeElement}\n * was passed, it will be used to look for similar element in the view for unwrapping. If `Function` is provided, it is passed all\n * the parameters of the\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:removeMarker removeMarker event}.\n * It's expected that the function returns a {@link module:engine/view/attributeelement~AttributeElement}. The result of\n * the function will be used to look for similar element in the view for unwrapping.\n *\n * The converter automatically consumes corresponding value from consumables list, stops the event (see\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher}) and bind model and view elements.\n *\n *\t\tmodelDispatcher.on( 'removeMarker:searchResult', unwrapRange( new ViewAttributeElement( 'span', { class: 'searchResult' } ) ) );\n *\n * @see module:engine/conversion/model-to-view-converters~wrapRange\n * @param {module:engine/view/attributeelement~AttributeElement|Function} elementCreator View attribute element, or function returning\n * a view attribute element, which will be used for unwrapping.\n * @returns {Function} Unwrap range converter.\n */\nexport function unwrapRange( elementCreator ) {\n\treturn ( evt, data, consumable, conversionApi ) => {\n\t\tconst viewElement = ( elementCreator instanceof ViewElement ) ?\n\t\t\telementCreator.clone( true ) :\n\t\t\telementCreator( data, consumable, conversionApi );\n\n\t\tif ( !viewElement ) {\n\t\t\treturn;\n\t\t}\n\n\t\tif ( !consumable.consume( data.range, 'removeMarker' ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst viewRange = conversionApi.mapper.toViewRange( data.range );\n\t\tconst flatViewRanges = viewWriter.breakViewRangePerContainer( viewRange );\n\n\t\tfor ( let range of flatViewRanges ) {\n\t\t\tviewWriter.unwrap( range, viewElement );\n\t\t}\n\t};\n}\n\n/**\n * Function factory, creates a default model-to-view converter for node remove changes.\n *\n *\t\tmodelDispatcher.on( 'remove', remove() );\n *\n * @returns {Function} Remove event converter.\n */\nexport function remove() {\n\treturn ( evt, data, consumable, conversionApi ) => {\n\t\tif ( !consumable.consume( data.item, 'remove' ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// We cannot map non-existing positions from model to view. Since a range was removed\n\t\t// from the model, we cannot recreate that range and map it to view, because\n\t\t// end of that range is incorrect.\n\t\t// Instead we will use `data.sourcePosition` as this is the last correct model position and\n\t\t// it is a position before the removed item. Then, we will calculate view range to remove \"manually\".\n\t\tconst viewPosition = conversionApi.mapper.toViewPosition( data.sourcePosition );\n\t\tlet viewRange;\n\n\t\tif ( data.item.is( 'element' ) ) {\n\t\t\t// Note: in remove conversion we cannot use model-to-view element mapping because `data.item` may be\n\t\t\t// already mapped to another element (this happens when move change is converted).\n\t\t\t// In this case however, `viewPosition` is the position before view element that corresponds to removed model element.\n\t\t\tviewRange = ViewRange.createOn( viewPosition.nodeAfter );\n\t\t} else {\n\t\t\t// If removed item is a text node, we need to traverse view tree to find the view range to remove.\n\t\t\t// Range to remove will start `viewPosition` and should contain amount of characters equal to the amount of removed characters.\n\t\t\tconst viewRangeEnd = _shiftViewPositionByCharacters( viewPosition, data.item.offsetSize );\n\t\t\tviewRange = new ViewRange( viewPosition, viewRangeEnd );\n\t\t}\n\n\t\t// Trim the range to remove in case some UI elements are on the view range boundaries.\n\t\tviewWriter.remove( viewRange.getTrimmed() );\n\n\t\t// Unbind this element only if it was moved to graveyard.\n\t\t// The dispatcher#remove event will also be fired if the element was moved to another place (remove+insert are fired).\n\t\t// Let's say that <b> is moved before <a>. The view will be changed like this:\n\t\t//\n\t\t// 1) start:    <a></a><b></b>\n\t\t// 2) insert:   <b (new)></b><a></a><b></b>\n\t\t// 3) remove:   <b (new)></b><a></a>\n\t\t//\n\t\t// If we'll unbind the <b> element in step 3 we'll also lose binding of the <b (new)> element in the view,\n\t\t// because unbindModelElement() cancels both bindings – (model <b> => view <b (new)>) and (view <b (new)> => model <b>).\n\t\t// We can't lose any of these.\n\t\t//\n\t\t// See #847.\n\t\tif ( data.item.root.rootName == '$graveyard' ) {\n\t\t\tconversionApi.mapper.unbindModelElement( data.item );\n\t\t}\n\t};\n}\n\n// Helper function that shifts given view `position` in a way that returned position is after `howMany` characters compared\n// to the original `position`.\n// Because in view there might be view ui elements splitting text nodes, we cannot simply use `ViewPosition#getShiftedBy()`.\nfunction _shiftViewPositionByCharacters( position, howMany ) {\n\t// Create a walker that will walk the view tree starting from given position and walking characters one-by-one.\n\tconst walker = new ViewTreeWalker( { startPosition: position, singleCharacters: true } );\n\t// We will count visited characters and return the position after `howMany` characters.\n\tlet charactersFound = 0;\n\n\tfor ( let value of walker ) {\n\t\tif ( value.type == 'text' ) {\n\t\t\tcharactersFound++;\n\n\t\t\tif ( charactersFound == howMany ) {\n\t\t\t\treturn walker.position;\n\t\t\t}\n\t\t}\n\t}\n}\n\n/**\n * Function factory, creates a default model-to-view converter for removing {@link module:engine/view/uielement~UIElement ui element}\n * basing on marker remove change.\n *\n * @param {module:engine/view/uielement~UIElement|Function} elementCreator View ui element, or function returning\n * a view ui element, which will be used as a pattern when look for element to remove at the marker start position.\n * @returns {Function} Remove ui element converter.\n */\nexport function removeUIElement( elementCreator ) {\n\treturn ( evt, data, consumable, conversionApi ) => {\n\t\tlet viewStartElement, viewEndElement;\n\n\t\tif ( elementCreator instanceof ViewElement ) {\n\t\t\tviewStartElement = elementCreator.clone( true );\n\t\t\tviewEndElement = elementCreator.clone( true );\n\t\t} else {\n\t\t\tdata.isOpening = true;\n\t\t\tviewStartElement = elementCreator( data, consumable, conversionApi );\n\n\t\t\tdata.isOpening = false;\n\t\t\tviewEndElement = elementCreator( data, consumable, conversionApi );\n\t\t}\n\n\t\tif ( !viewStartElement || !viewEndElement ) {\n\t\t\treturn;\n\t\t}\n\n\t\tif ( !consumable.consume( data.range, 'removeMarker' ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst viewRange = conversionApi.mapper.toViewRange( data.range );\n\n\t\t// First remove closing element.\n\t\tviewWriter.clear( viewRange.getEnlarged(), viewEndElement );\n\n\t\t// If closing and opening elements are not the same then remove opening element.\n\t\tif ( !viewStartElement.isSimilar( viewEndElement ) ) {\n\t\t\tviewWriter.clear( viewRange.getEnlarged(), viewStartElement );\n\t\t}\n\t};\n}\n\n/**\n * Returns the consumable type that is to be consumed in an event, basing on that event name.\n *\n * @param {String} evtName Event name.\n * @returns {String} Consumable type.\n */\nexport function eventNameToConsumableType( evtName ) {\n\tconst parts = evtName.split( ':' );\n\n\treturn parts[ 0 ] + ':' + parts[ 1 ];\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/conversion/model-to-view-converters.js\n// module id = 100\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/delta/insertdelta\n */\n\nimport Delta from './delta';\nimport RemoveDelta from './removedelta';\nimport DeltaFactory from './deltafactory';\nimport InsertOperation from '../operation/insertoperation';\nimport { register } from '../batch';\nimport { normalizeNodes } from './../writer';\n\nimport DocumentFragment from '../documentfragment';\nimport Range from '../../model/range.js';\nimport Position from '../../model/position.js';\n\n/**\n * @classdesc\n * To provide specific OT behavior and better collisions solving, the {@link module:engine/model/batch~Batch#insert Batch#insert} method\n * uses the `InsertDelta` class which inherits from the `Delta` class and may overwrite some methods.\n */\nexport default class InsertDelta extends Delta {\n\t/**\n\t * @inheritDoc\n\t */\n\tget type() {\n\t\treturn 'insert';\n\t}\n\n\t/**\n\t * Position where the delta inserts nodes or `null` if there are no operations in the delta.\n\t *\n\t * @readonly\n\t * @type {module:engine/model/position~Position|null}\n\t */\n\tget position() {\n\t\treturn this._insertOperation ? this._insertOperation.position : null;\n\t}\n\n\t/**\n\t * Node list containing all the nodes inserted by the delta or `null` if there are no operations in the delta.\n\t *\n\t * @readonly\n\t * @type {module:engine/model/nodelist~NodeList|null}\n\t */\n\tget nodes() {\n\t\treturn this._insertOperation ? this._insertOperation.nodes : null;\n\t}\n\n\t/**\n\t * Insert operation that is saved in this delta or `null` if there are no operations in the delta.\n\t *\n\t * @readonly\n\t * @protected\n\t * @type {module:engine/model/operation/insertoperation~InsertOperation|null}\n\t */\n\tget _insertOperation() {\n\t\treturn this.operations[ 0 ] || null;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tget _reverseDeltaClass() {\n\t\treturn RemoveDelta;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.delta.InsertDelta';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get _priority() {\n\t\treturn 20;\n\t}\n}\n\n/**\n * Inserts a node or nodes at the given position.\n *\n * When inserted element is a {@link engine/model/documentfragment~DocumentFragment} and has markers its markers will\n * be set to {@link engine/model/document~Document#markers}.\n *\n * @chainable\n * @method module:engine/model/batch~Batch#insert\n * @param {module:engine/model/position~Position} position Position of insertion.\n * @param {module:engine/model/node~NodeSet} nodes The list of nodes to be inserted.\n */\nregister( 'insert', function( position, nodes ) {\n\tconst normalizedNodes = normalizeNodes( nodes );\n\n\t// If nothing is inserted do not create delta and operation.\n\tif ( normalizedNodes.length === 0 ) {\n\t\treturn this;\n\t}\n\n\tconst delta = new InsertDelta();\n\tconst insert = new InsertOperation( position, normalizedNodes, this.document.version );\n\n\tthis.addDelta( delta );\n\tdelta.addOperation( insert );\n\tthis.document.applyOperation( insert );\n\n\t// When element is a DocumentFragment we need to move its markers to Document#markers.\n\tif ( nodes instanceof DocumentFragment ) {\n\t\tfor ( const [ markerName, markerRange ] of nodes.markers ) {\n\t\t\t// We need to migrate marker range from DocumentFragment to Document.\n\t\t\tconst rangeRootPosition = Position.createAt( markerRange.root );\n\t\t\tconst range = new Range(\n\t\t\t\tmarkerRange.start._getCombined( rangeRootPosition, position ),\n\t\t\t\tmarkerRange.end._getCombined( rangeRootPosition, position )\n\t\t\t);\n\n\t\t\tthis.setMarker( markerName, range );\n\t\t}\n\t}\n\n\treturn this;\n} );\n\nDeltaFactory.register( InsertDelta );\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/delta/insertdelta.js\n// module id = 101\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/delta/mergedelta\n */\n\nimport Delta from './delta';\nimport DeltaFactory from './deltafactory';\nimport SplitDelta from './splitdelta';\nimport { register } from '../batch';\nimport Position from '../position';\nimport Element from '../element';\nimport RemoveOperation from '../operation/removeoperation';\nimport MoveOperation from '../operation/moveoperation';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/**\n * @classdesc\n * To provide specific OT behavior and better collisions solving, {@link module:engine/model/batch~Batch#merge} method\n * uses the `MergeDelta` class which inherits from the `Delta` class and may overwrite some methods.\n */\nexport default class MergeDelta extends Delta {\n\t/**\n\t * @inheritDoc\n\t */\n\tget type() {\n\t\treturn 'merge';\n\t}\n\n\t/**\n\t * Position between to merged nodes or `null` if the delta has no operations.\n\t *\n\t * @readonly\n\t * @type {module:engine/model/position~Position|null}\n\t */\n\tget position() {\n\t\treturn this._removeOperation ? this._removeOperation.sourcePosition : null;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tgetReversed() {\n\t\tlet delta = super.getReversed();\n\n\t\tif ( delta.operations.length > 0 ) {\n\t\t\tdelta.operations[ 1 ].isSticky = false;\n\t\t}\n\n\t\treturn delta;\n\t}\n\n\t/**\n\t * Operation in this delta that removes the node after merge position (which will be empty at that point) or\n\t * `null` if the delta has no operations. Note, that after {@link module:engine/model/delta/transform~transform transformation}\n\t * this might be an instance of {@link module:engine/model/operation/moveoperation~MoveOperation} instead of\n\t * {@link module:engine/model/operation/removeoperation~RemoveOperation}.\n\t *\n\t * @readonly\n\t * @protected\n\t * @type {module:engine/model/operation/moveoperation~MoveOperation|null}\n\t */\n\tget _removeOperation() {\n\t\treturn this.operations[ 1 ] || null;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tget _reverseDeltaClass() {\n\t\treturn SplitDelta;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.delta.MergeDelta';\n\t}\n}\n\n/**\n * Merges two siblings at the given position.\n *\n * Node before and after the position have to be an element. Otherwise `batch-merge-no-element-before` or\n * `batch-merge-no-element-after` error will be thrown.\n *\n * @chainable\n * @method module:engine/model/batch~Batch#merge\n * @param {module:engine/model/position~Position} position Position of merge.\n */\nregister( 'merge', function( position ) {\n\tconst delta = new MergeDelta();\n\tthis.addDelta( delta );\n\n\tconst nodeBefore = position.nodeBefore;\n\tconst nodeAfter = position.nodeAfter;\n\n\tif ( !( nodeBefore instanceof Element ) ) {\n\t\t/**\n\t\t * Node before merge position must be an element.\n\t\t *\n\t\t * @error batch-merge-no-element-before\n\t\t */\n\t\tthrow new CKEditorError( 'batch-merge-no-element-before: Node before merge position must be an element.' );\n\t}\n\n\tif ( !( nodeAfter instanceof Element ) ) {\n\t\t/**\n\t\t * Node after merge position must be an element.\n\t\t *\n\t\t * @error batch-merge-no-element-after\n\t\t */\n\t\tthrow new CKEditorError( 'batch-merge-no-element-after: Node after merge position must be an element.' );\n\t}\n\n\tconst positionAfter = Position.createFromParentAndOffset( nodeAfter, 0 );\n\tconst positionBefore = Position.createFromParentAndOffset( nodeBefore, nodeBefore.maxOffset );\n\n\tconst move = new MoveOperation( positionAfter, nodeAfter.maxOffset, positionBefore, this.document.version );\n\tmove.isSticky = true;\n\tdelta.addOperation( move );\n\tthis.document.applyOperation( move );\n\n\tconst remove = new RemoveOperation( position, 1, this.document.version );\n\tdelta.addOperation( remove );\n\tthis.document.applyOperation( remove );\n\n\treturn this;\n} );\n\nDeltaFactory.register( MergeDelta );\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/delta/mergedelta.js\n// module id = 102\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/delta/movedelta\n */\n\nimport Delta from './delta';\nimport DeltaFactory from './deltafactory';\nimport { register } from '../batch';\nimport MoveOperation from '../operation/moveoperation';\nimport Position from '../position';\nimport Range from '../range';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/**\n * @classdesc\n * To provide specific OT behavior and better collisions solving, {@link module:engine/model/batch~Batch#move} method\n * uses the `MoveDelta` class which inherits from the `Delta` class and may overwrite some methods.\n */\nexport default class MoveDelta extends Delta {\n\t/**\n\t * @inheritDoc\n\t */\n\tget type() {\n\t\treturn 'move';\n\t}\n\n\t/**\n\t * Offset size of moved range or `null` if there are no operations in the delta.\n\t *\n\t * @type {Number|null}\n\t */\n\tget howMany() {\n\t\treturn this._moveOperation ? this._moveOperation.howMany : null;\n\t}\n\n\t/**\n\t * {@link module:engine/model/delta/movedelta~MoveDelta#_moveOperation Move operation}\n\t * {@link module:engine/model/operation/moveoperation~MoveOperation#sourcePosition source position} or `null` if there are\n\t * no operations in the delta.\n\t *\n\t * @type {module:engine/model/position~Position|null}\n\t */\n\tget sourcePosition() {\n\t\treturn this._moveOperation ? this._moveOperation.sourcePosition : null;\n\t}\n\n\t/**\n\t * {@link module:engine/model/delta/movedelta~MoveDelta#_moveOperation Move operation}\n\t * {@link module:engine/model/operation/moveoperation~MoveOperation#targetPosition target position} or `null` if there are\n\t * no operations in the delta.\n\t *\n\t * @type {module:engine/model/position~Position|null}\n\t */\n\tget targetPosition() {\n\t\treturn this._moveOperation ? this._moveOperation.targetPosition : null;\n\t}\n\n\t/**\n\t * {@link module:engine/model/delta/movedelta~MoveDelta#_moveOperation Move operation} that is saved in this delta or `null`\n\t * if there are no operations in the delta.\n\t *\n\t * @protected\n\t * @type {module:engine/model/operation/moveoperation~MoveOperation|null}\n\t */\n\tget _moveOperation() {\n\t\treturn this.operations[ 0 ] || null;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tget _reverseDeltaClass() {\n\t\treturn MoveDelta;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.delta.MoveDelta';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get _priority() {\n\t\treturn 20;\n\t}\n}\n\nfunction addMoveOperation( batch, delta, sourcePosition, howMany, targetPosition ) {\n\tconst operation = new MoveOperation( sourcePosition, howMany, targetPosition, batch.document.version );\n\tdelta.addOperation( operation );\n\tbatch.document.applyOperation( operation );\n}\n\n/**\n * Moves given {@link module:engine/model/item~Item model item} or given range to target position.\n *\n * @chainable\n * @method module:engine/model/batch~Batch#move\n * @param {module:engine/model/item~Item|module:engine/model/range~Range} itemOrRange Model item or range of nodes to move.\n * @param {module:engine/model/position~Position} targetPosition Position where moved nodes will be inserted.\n */\nregister( 'move', function( itemOrRange, targetPosition ) {\n\tconst delta = new MoveDelta();\n\tthis.addDelta( delta );\n\n\tif ( itemOrRange instanceof Range ) {\n\t\tif ( !itemOrRange.isFlat ) {\n\t\t\t/**\n\t\t\t * Range to move is not flat.\n\t\t\t *\n\t\t\t * @error batch-move-range-not-flat\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'batch-move-range-not-flat: Range to move is not flat.' );\n\t\t}\n\n\t\taddMoveOperation( this, delta, itemOrRange.start, itemOrRange.end.offset - itemOrRange.start.offset, targetPosition );\n\t} else {\n\t\taddMoveOperation( this, delta, Position.createBefore( itemOrRange ), 1, targetPosition );\n\t}\n\n\treturn this;\n} );\n\nDeltaFactory.register( MoveDelta );\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/delta/movedelta.js\n// module id = 103\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/delta/removedelta\n */\n\nimport MoveDelta from './movedelta';\nimport { register } from '../batch';\nimport DeltaFactory from './deltafactory';\nimport RemoveOperation from '../operation/removeoperation';\nimport Position from '../position';\nimport Range from '../range';\n\n/**\n * @classdesc\n * To provide specific OT behavior and better collisions solving, {@link module:engine/model/batch~Batch#remove} method\n * uses the `RemoveDelta` class which inherits from the `Delta` class and may overwrite some methods.\n */\nexport default class RemoveDelta extends MoveDelta {\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.delta.RemoveDelta';\n\t}\n}\n\nfunction addRemoveOperation( batch, delta, position, howMany ) {\n\tconst operation = new RemoveOperation( position, howMany, batch.document.version );\n\tdelta.addOperation( operation );\n\tbatch.document.applyOperation( operation );\n}\n\n/**\n * Removes given {@link module:engine/model/item~Item model item} or given range.\n *\n * @chainable\n * @method module:engine/model/batch~Batch#remove\n * @param {module:engine/model/item~Item|module:engine/model/range~Range} itemOrRange Model item or range to remove.\n */\nregister( 'remove', function( itemOrRange ) {\n\tconst delta = new RemoveDelta();\n\tthis.addDelta( delta );\n\n\tif ( itemOrRange instanceof Range ) {\n\t\t// The array is reversed, so the ranges are correct and do not have to be updated.\n\t\tlet ranges = itemOrRange.getMinimalFlatRanges().reverse();\n\n\t\tfor ( let flat of ranges ) {\n\t\t\taddRemoveOperation( this, delta, flat.start, flat.end.offset - flat.start.offset );\n\t\t}\n\t} else {\n\t\taddRemoveOperation( this, delta, Position.createBefore( itemOrRange ), 1 );\n\t}\n\n\treturn this;\n} );\n\nDeltaFactory.register( RemoveDelta );\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/delta/removedelta.js\n// module id = 104\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/delta/splitdelta\n */\n\nimport Delta from './delta';\nimport DeltaFactory from './deltafactory';\nimport { register } from '../batch';\nimport Position from '../position';\nimport Element from '../element';\nimport InsertOperation from '../operation/insertoperation';\nimport MoveOperation from '../operation/moveoperation';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\nimport MergeDelta from '../delta/mergedelta';\n\n/**\n * @classdesc\n * To provide specific OT behavior and better collisions solving, the {@link module:engine/model/batch~Batch#split} method\n * uses `SplitDelta` class which inherits from the `Delta` class and may overwrite some methods.\n */\nexport default class SplitDelta extends Delta {\n\t/**\n\t * @inheritDoc\n\t */\n\tget type() {\n\t\treturn 'split';\n\t}\n\n\t/**\n\t * Position of split or `null` if there are no operations in the delta.\n\t *\n\t * @type {module:engine/model/position~Position|null}\n\t */\n\tget position() {\n\t\treturn this._moveOperation ? this._moveOperation.sourcePosition : null;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tgetReversed() {\n\t\tlet delta = super.getReversed();\n\n\t\tif ( delta.operations.length > 0 ) {\n\t\t\tdelta.operations[ 0 ].isSticky = true;\n\t\t}\n\n\t\treturn delta;\n\t}\n\n\t/**\n\t * Operation in the delta that adds to model an element into which split nodes will be moved, or `null` if\n\t * there are no operations in the delta.\n\t *\n\t * Most commonly this will be {@link module:engine/model/operation/insertoperation~InsertOperation an insert operation},\n\t * as `SplitDelta` has to create a new node. If `SplitDelta` was created through\n\t * {@link module:engine/model/delta/delta~Delta#getReversed reversing}\n\t * a {@link module:engine/model/delta/mergedelta~MergeDelta merge delta},\n\t * this will be a {@link module:engine/model/operation/reinsertoperation~ReinsertOperation reinsert operation},\n\t * as we will want to re-insert the exact element that was removed by that merge delta.\n\t *\n\t * @protected\n\t * @type {module:engine/model/operation/insertoperation~InsertOperation|\n\t * module:engine/model/operation/reinsertoperation~ReinsertOperation|null}\n\t */\n\tget _cloneOperation() {\n\t\treturn this.operations[ 0 ] || null;\n\t}\n\n\t/**\n\t * Operation in the delta that moves model items, that are after split position, to their new parent or `null`\n\t * if there are no operations in the delta.\n\t *\n\t * @protected\n\t * @type {module:engine/model/operation/moveoperation~MoveOperation|null}\n\t */\n\tget _moveOperation() {\n\t\treturn this.operations[ 1 ] || null;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tget _reverseDeltaClass() {\n\t\treturn MergeDelta;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.delta.SplitDelta';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get _priority() {\n\t\treturn 5;\n\t}\n}\n\n/**\n * Splits an element at the given position.\n *\n * The element cannot be a root element, as root element cannot be split. The `batch-split-root` error will be thrown if\n * you try to split the root element.\n *\n * @chainable\n * @method module:engine/model/batch~Batch#split\n * @param {module:engine/model/position~Position} position Position of split.\n */\nregister( 'split', function( position ) {\n\tconst delta = new SplitDelta();\n\tthis.addDelta( delta );\n\n\tconst splitElement = position.parent;\n\n\tif ( !splitElement.parent ) {\n\t\t/**\n\t\t * Root element can not be split.\n\t\t *\n\t\t * @error batch-split-root\n\t\t */\n\t\tthrow new CKEditorError( 'batch-split-root: Root element can not be split.' );\n\t}\n\n\tconst copy = new Element( splitElement.name, splitElement.getAttributes() );\n\n\tconst insert = new InsertOperation( Position.createAfter( splitElement ), copy, this.document.version );\n\n\tdelta.addOperation( insert );\n\tthis.document.applyOperation( insert );\n\n\tconst move = new MoveOperation(\n\t\tposition,\n\t\tsplitElement.maxOffset - position.offset,\n\t\tPosition.createFromParentAndOffset( copy, 0 ),\n\t\tthis.document.version\n\t);\n\tmove.isSticky = true;\n\n\tdelta.addOperation( move );\n\tthis.document.applyOperation( move );\n\n\treturn this;\n} );\n\nDeltaFactory.register( SplitDelta );\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/delta/splitdelta.js\n// module id = 105\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/delta/transform\n */\n\nimport Delta from './delta';\nimport operationTransform from '../operation/transform';\nimport NoOperation from '../operation/nooperation';\nimport arrayUtils from '@ckeditor/ckeditor5-utils/src/lib/lodash/array';\n\nconst specialCases = new Map();\n\n/**\n * Transforms given {@link module:engine/model/delta/delta~Delta delta} by another {@link module:engine/model/delta/delta~Delta delta} and\n * returns the result of that transformation as an array containing one or more {@link module:engine/model/delta/delta~Delta delta}\n * instances.\n *\n * Delta transformations heavily base on {@link module:engine/model/operation/transform~transform operational transformations}. Since\n * delta is a list of operations most situations can be handled thanks to operational transformation. Unfortunately,\n * deltas are more complicated than operations and have they semantic meaning, as they represent user's editing intentions.\n *\n * Sometimes, simple operational transformation on deltas' operations might result in some unexpected results. Those\n * results would be fine from OT point of view, but would not reflect user's intentions. Because of such conflicts\n * we need to handle transformations in special cases in a custom way.\n *\n * The function itself looks whether two given delta types have a special case function registered. If so, the deltas are\n * transformed using that function. If not, {@link module:engine/model/delta/transform~defaultTransform default transformation algorithm}\n * is used.\n *\n * @param {module:engine/model/delta/delta~Delta} a Delta that will be transformed.\n * @param {module:engine/model/delta/delta~Delta} b Delta to transform by.\n * @param {Boolean} isAMoreImportantThanB Flag indicating whether the delta which will be transformed (`a`) should be treated\n * as more important when resolving conflicts. Note that this flag is used only if provided deltas have same\n * {@link module:engine/model/delta/delta~Delta._priority priority}. If deltas have different priorities, their importance is resolved\n * automatically and overwrites this flag.\n * @returns {Array.<module:engine/model/delta/delta~Delta>} Result of the transformation.\n */\nexport default function transform( a, b, isAMoreImportantThanB ) {\n\tconst transformAlgorithm = getTransformationCase( a, b ) || defaultTransform;\n\n\tconst transformed = transformAlgorithm( a, b, isAMoreImportantThanB );\n\tconst baseVersion = arrayUtils.last( b.operations ).baseVersion;\n\n\treturn updateBaseVersion( baseVersion, transformed );\n}\n\n// Updates base versions of operations inside deltas (which are the results of delta transformation).\nfunction updateBaseVersion( baseVersion, deltas ) {\n\tfor ( let delta of deltas ) {\n\t\tfor ( let op of delta.operations ) {\n\t\t\top.baseVersion = ++baseVersion;\n\t\t}\n\t}\n\n\treturn deltas;\n}\n\n/**\n * The default delta transformation function. It is used for those deltas that are not in special case conflict.\n *\n * This algorithm is similar to a popular `dOPT` algorithm used in operational transformation, as we are in fact\n * transforming two sets of operations by each other.\n *\n * @param {module:engine/model/delta/delta~Delta} a Delta that will be transformed.\n * @param {module:engine/model/delta/delta~Delta} b Delta to transform by.\n * @param {Boolean} isAMoreImportantThanB Flag indicating whether the delta which will be transformed (`a`) should be treated\n * as more important when resolving conflicts. Note that this flag is used only if provided deltas have same\n * {@link module:engine/model/delta/delta~Delta._priority priority}. If deltas have different priorities, their importance is resolved\n * automatically and overwrites this flag.\n * @returns {Array.<module:engine/model/delta/delta~Delta>} Result of the transformation, that is an array with single delta instance.\n */\nexport function defaultTransform( a, b, isAMoreImportantThanB ) {\n\t// First, resolve the flag real value.\n\tisAMoreImportantThanB = getPriority( a.constructor, b.constructor, isAMoreImportantThanB );\n\n\t// Create a new delta instance. Make sure that the new delta is of same type as transformed delta.\n\t// We will transform operations in that delta but it doesn't mean the delta's \"meaning\" which is connected to\n\t// the delta's type. Since the delta's type is heavily used in transformations and probably other parts\n\t// of system it is important to keep proper delta type through all transformation process.\n\tconst transformed = new a.constructor();\n\n\t// Array containing operations that we will transform by. At the beginning these are just operations from\n\tlet byOps = b.operations;\n\n\t// This array is storing operations from `byOps` which got transformed by operation from delta `a`.\n\tlet newByOps = [];\n\n\t// We take each operation from original set of operations to transform.\n\tfor ( let opA of a.operations ) {\n\t\t// We wrap the operation in the array. This is important, because operation transformation algorithm returns\n\t\t// an array of operations so we need to make sure that our algorithm is ready to handle arrays.\n\t\tconst ops = [ opA ];\n\n\t\t// Now the real algorithm takes place.\n\t\tfor ( let opB of byOps ) {\n\t\t\t// For each operation that we need transform by...\n\t\t\tfor ( let i = 0; i < ops.length; i++ ) {\n\t\t\t\t// We take each operation to transform...\n\t\t\t\tconst op = ops[ i ];\n\n\t\t\t\t// And transform both of them by themselves.\n\n\t\t\t\t// The result of transforming operation from delta B by operation from delta A is saved in\n\t\t\t\t// `newByOps` array. We will use that array for transformations in next loops. We need delta B\n\t\t\t\t// operations after transformed by delta A operations to get correct results of transformations\n\t\t\t\t// of next operations from delta A.\n\t\t\t\t//\n\t\t\t\t// It's like this because 2nd operation from delta A assumes that 1st operation from delta A\n\t\t\t\t// is \"already applied\". When we transform 2nd operation from delta A by operations from delta B\n\t\t\t\t// we have to be sure that operations from delta B are in a state that acknowledges 1st operation\n\t\t\t\t// from delta A.\n\t\t\t\t//\n\t\t\t\t// This can be easier understood when operations sets to transform are represented by diamond diagrams:\n\t\t\t\t// http://www.codecommit.com/blog/java/understanding-and-applying-operational-transformation\n\n\t\t\t\t// Using push.apply because operationTransform function is returning an array with one or multiple results.\n\t\t\t\tArray.prototype.push.apply( newByOps, operationTransform( opB, op, !isAMoreImportantThanB ) );\n\n\t\t\t\t// Then, we transform operation from delta A by operation from delta B.\n\t\t\t\tconst results = operationTransform( op, opB, isAMoreImportantThanB );\n\n\t\t\t\t// We replace currently processed operation from `ops` array by the results of transformation.\n\t\t\t\t// Note, that we process single operation but the operationTransform result might be an array, so we\n\t\t\t\t// might splice-in more operations. We will process them further in next iterations. Right now we\n\t\t\t\t// just save them in `ops` array and move `i` pointer by proper offset.\n\t\t\t\tArray.prototype.splice.apply( ops, [ i, 1 ].concat( results ) );\n\n\t\t\t\ti += results.length - 1;\n\t\t\t}\n\n\t\t\t// At this point a single operation from delta A got transformed by a single operation from delta B.\n\t\t\t// The transformation result is in `ops` array and it may be one or more operations. This was just the first step.\n\t\t\t// Operation from delta A has to be further transformed by the other operations from delta B.\n\t\t\t// So in next iterator loop we will take another operation from delta B and use transformed delta A (`ops`)\n\t\t\t// to transform it further.\n\t\t}\n\n\t\t// We got through all delta B operations and have a final transformed state of an operation from delta A.\n\n\t\t// As previously mentioned, we substitute operations from delta B by their transformed equivalents.\n\t\tbyOps = newByOps;\n\t\tnewByOps = [];\n\n\t\t// We add transformed operation from delta A to newly created delta.\n\t\t// Remember that transformed operation from delta A may consist of multiple operations.\n\t\tfor ( let op of ops ) {\n\t\t\ttransformed.addOperation( op );\n\t\t}\n\n\t\t// In next loop, we will take another operation from delta A and transform it through (transformed) operations\n\t\t// from delta B...\n\t}\n\n\treturn [ transformed ];\n}\n\n/**\n * Adds a special case callback for given delta classes.\n *\n * @external module:engine/model/delta/transform~transform\n * @function module:engine/model/delta/transform~transform.addTransformationCase\n * @param {Function} A Delta constructor which instance will get transformed.\n * @param {Function} B Delta constructor which instance will be transformed by.\n * @param {Function} resolver A callback that will handle custom special case transformation for instances of given delta classes.\n */\nexport function addTransformationCase( A, B, resolver ) {\n\tlet casesA = specialCases.get( A );\n\n\tif ( !casesA ) {\n\t\tcasesA = new Map();\n\t\tspecialCases.set( A, casesA );\n\t}\n\n\tcasesA.set( B, resolver );\n}\n\n/**\n * Gets a special case callback which was previously {@link module:engine/model/delta/transform~transform.addTransformationCase added}.\n *\n * @param {module:engine/model/delta/delta~Delta} a Delta to transform.\n * @param {module:engine/model/delta/delta~Delta} b Delta to be transformed by.\n */\nexport function getTransformationCase( a, b ) {\n\tlet casesA = specialCases.get( a.constructor );\n\n\t// If there are no special cases registered for class which `a` is instance of, we will\n\t// check if there are special cases registered for any parent class.\n\tif ( !casesA || !casesA.get( b.constructor ) ) {\n\t\tconst cases = specialCases.keys();\n\n\t\tfor ( let caseClass of cases ) {\n\t\t\tif ( a instanceof caseClass && specialCases.get( caseClass ).get( b.constructor ) ) {\n\t\t\t\tcasesA = specialCases.get( caseClass );\n\n\t\t\t\tbreak;\n\t\t\t}\n\t\t}\n\t}\n\n\tif ( casesA ) {\n\t\treturn casesA.get( b.constructor );\n\t}\n\n\treturn undefined;\n}\n\n// Checks priorities of passed constructors and decides which one is more important.\n// If both priorities are same, value passed in `isAMoreImportantThanB` parameter is used.\nfunction getPriority( A, B, isAMoreImportantThanB ) {\n\tif ( A._priority > B._priority ) {\n\t\treturn true;\n\t} else if ( A._priority < B._priority ) {\n\t\treturn false;\n\t} else {\n\t\treturn isAMoreImportantThanB;\n\t}\n}\n\n/**\n * Transforms two sets of deltas by themselves. Returns both transformed sets. Does not modify passed parameters.\n *\n * @param {Array.<module:engine/model/delta/delta~Delta>} deltasA Array with first set of deltas to transform.\n * @param {Array.<module:engine/model/delta/delta~Delta>} deltasB Array with second set of deltas to transform.\n * @param {Boolean} isAMoreImportantThanB Flag indicating whether the deltas from `deltasA` set should be treated as more\n * important when resolving conflicts.\n * @returns {Object}\n * @returns {Array.<module:engine/model/delta/delta~Delta>} return.deltasA The first set of deltas transformed by the second set of deltas.\n * @returns {Array.<module:engine/model/delta/delta~Delta>} return.deltasB The second set of deltas transformed by the first set of deltas.\n */\nexport function transformDeltaSets( deltasA, deltasB, isAMoreImportantThanB ) {\n\tlet transformedDeltasA = Array.from( deltasA );\n\tlet transformedDeltasB = Array.from( deltasB );\n\n\tfor ( let i = 0; i < transformedDeltasA.length; i++ ) {\n\t\tlet deltaA = [ transformedDeltasA[ i ] ];\n\n\t\tfor ( let j = 0; j < transformedDeltasB.length; j++ ) {\n\t\t\tlet deltaB = [ transformedDeltasB[ j ] ];\n\n\t\t\tfor ( let k = 0; k < deltaA.length; k++ ) {\n\t\t\t\tfor ( let l = 0; l < deltaB.length; l++ ) {\n\t\t\t\t\tlet resultAB = transform( deltaA[ k ], deltaB[ l ], isAMoreImportantThanB );\n\t\t\t\t\tlet resultBA = transform( deltaB[ l ], deltaA[ k ], !isAMoreImportantThanB );\n\n\t\t\t\t\tdeltaA.splice( k, 1, ...resultAB );\n\t\t\t\t\tk += resultAB.length - 1;\n\n\t\t\t\t\tdeltaB.splice( l, 1, ...resultBA );\n\t\t\t\t\tl += resultBA.length - 1;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\ttransformedDeltasB.splice( j, 1, ...deltaB );\n\t\t\tj += deltaB.length - 1;\n\t\t}\n\n\t\ttransformedDeltasA.splice( i, 1, ...deltaA );\n\t\ti += deltaA.length - 1;\n\t}\n\n\tconst opsDiffA = getOpsCount( transformedDeltasA ) - getOpsCount( deltasA );\n\tconst opsDiffB = getOpsCount( transformedDeltasB ) - getOpsCount( deltasB );\n\n\tif ( opsDiffB < opsDiffA ) {\n\t\tpadWithNoOps( transformedDeltasB, opsDiffA - opsDiffB );\n\t} else if ( opsDiffA < opsDiffB ) {\n\t\tpadWithNoOps( transformedDeltasA, opsDiffB - opsDiffA );\n\t}\n\n\treturn { deltasA: transformedDeltasA, deltasB: transformedDeltasB };\n}\n\n// Returns number of operations in given array of deltas.\nfunction getOpsCount( deltas ) {\n\treturn deltas.reduce( ( current, delta ) => {\n\t\treturn current + delta.operations.length;\n\t}, 0 );\n}\n\n// Adds a delta containing `howMany` `NoOperation` instances to given array with deltas.\n// Used to \"synchronize\" the number of operations in two delta sets.\nfunction padWithNoOps( deltas, howMany ) {\n\tconst lastDelta = deltas[ deltas.length - 1 ];\n\tlet baseVersion = lastDelta.operations.length + lastDelta.baseVersion;\n\n\tlet noDelta = new Delta();\n\n\tfor ( let i = 0; i < howMany; i++ ) {\n\t\tnoDelta.addOperation( new NoOperation( baseVersion++ ) );\n\t}\n\n\tdeltas.push( noDelta );\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/delta/transform.js\n// module id = 106\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/delta/unwrapdelta\n */\n\nimport Delta from './delta';\nimport DeltaFactory from './deltafactory';\nimport WrapDelta from './wrapdelta';\nimport { register } from '../batch';\nimport Position from '../position';\nimport RemoveOperation from '../operation/removeoperation';\nimport MoveOperation from '../operation/moveoperation';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/**\n * @classdesc\n * To provide specific OT behavior and better collisions solving, {@link module:engine/model/batch~Batch#merge} method\n * uses the `UnwrapDelta` class which inherits from the `Delta` class and may overwrite some methods.\n */\nexport default class UnwrapDelta extends Delta {\n\t/**\n\t * @inheritDoc\n\t */\n\tget type() {\n\t\treturn 'unwrap';\n\t}\n\n\t/**\n\t * Position before unwrapped element or `null` if there are no operations in the delta.\n\t *\n\t * @type {module:engine/model/position~Position|null}\n\t */\n\tget position() {\n\t\treturn this._moveOperation ? this._moveOperation.targetPosition : null;\n\t}\n\n\t/**\n\t * Operation in the delta that moves unwrapped nodes to their new parent or `null` if there are no operations in the delta.\n\t *\n\t * @protected\n\t * @type {module:engine/model/operation/moveoperation~MoveOperation|null}\n\t */\n\tget _moveOperation() {\n\t\treturn this.operations[ 0 ] || null;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tget _reverseDeltaClass() {\n\t\treturn WrapDelta;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.delta.UnwrapDelta';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get _priority() {\n\t\treturn 10;\n\t}\n}\n\n/**\n * Unwraps children of the given element – all its children are moved before it and then the element is removed.\n * Throws error if you try to unwrap an element which does not have a parent.\n *\n * @chainable\n * @method module:engine/model/batch~Batch#unwrap\n * @param {module:engine/model/element~Element} position Element to unwrap.\n */\nregister( 'unwrap', function( element ) {\n\tif ( element.parent === null ) {\n\t\t/**\n\t\t * Trying to unwrap an element which has no parent.\n\t\t *\n\t\t * @error batch-unwrap-element-no-parent\n\t\t */\n\t\tthrow new CKEditorError( 'batch-unwrap-element-no-parent: Trying to unwrap an element which has no parent.' );\n\t}\n\n\tconst delta = new UnwrapDelta();\n\tthis.addDelta( delta );\n\n\tlet sourcePosition = Position.createFromParentAndOffset( element, 0 );\n\n\tconst move = new MoveOperation( sourcePosition, element.maxOffset, Position.createBefore( element ), this.document.version );\n\tmove.isSticky = true;\n\tdelta.addOperation( move );\n\tthis.document.applyOperation( move );\n\n\t// Computing new position because we moved some nodes before `element`.\n\t// If we would cache `Position.createBefore( element )` we remove wrong node.\n\tconst remove = new RemoveOperation( Position.createBefore( element ), 1, this.document.version );\n\tdelta.addOperation( remove );\n\tthis.document.applyOperation( remove );\n\n\treturn this;\n} );\n\nDeltaFactory.register( UnwrapDelta );\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/delta/unwrapdelta.js\n// module id = 107\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/delta/wrapdelta\n */\n\nimport Delta from './delta';\nimport DeltaFactory from './deltafactory';\nimport UnwrapDelta from './unwrapdelta';\nimport { register } from '../batch';\nimport Position from '../position';\nimport Range from '../range';\nimport Element from '../element';\nimport InsertOperation from '../operation/insertoperation';\nimport MoveOperation from '../operation/moveoperation';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/**\n * @classdesc\n * To provide specific OT behavior and better collisions solving, {@link module:engine/model/batch~Batch#merge} method\n * uses the `WrapDelta` class which inherits from the `Delta` class and may overwrite some methods.\n */\nexport default class WrapDelta extends Delta {\n\t/**\n\t * @inheritDoc\n\t */\n\tget type() {\n\t\treturn 'wrap';\n\t}\n\n\t/**\n\t * Range to wrap or `null` if there are no operations in the delta.\n\t *\n\t * @type {module:engine/model/range~Range|null}\n\t */\n\tget range() {\n\t\tlet moveOp = this._moveOperation;\n\n\t\treturn moveOp ? Range.createFromPositionAndShift( moveOp.sourcePosition, moveOp.howMany ) : null;\n\t}\n\n\t/**\n\t * Offset size of range to wrap by the delta or `null` if there are no operations in delta.\n\t *\n\t * @type {Number}\n\t */\n\tget howMany() {\n\t\tlet range = this.range;\n\n\t\treturn range ? range.end.offset - range.start.offset : 0;\n\t}\n\n\t/**\n\t * Operation that inserts wrapping element or `null` if there are no operations in the delta.\n\t *\n\t * @protected\n\t * @type {module:engine/model/operation/insertoperation~InsertOperation|module:engine/model/operation/reinsertoperation~ReinsertOperation}\n\t */\n\tget _insertOperation() {\n\t\treturn this.operations[ 0 ] || null;\n\t}\n\n\t/**\n\t * Operation that moves wrapped nodes to their new parent or `null` if there are no operations in the delta.\n\t *\n\t * @protected\n\t * @type {module:engine/model/operation/moveoperation~MoveOperation|null}\n\t */\n\tget _moveOperation() {\n\t\treturn this.operations[ 1 ] || null;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tget _reverseDeltaClass() {\n\t\treturn UnwrapDelta;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.delta.WrapDelta';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get _priority() {\n\t\treturn 10;\n\t}\n}\n\n/**\n * Wraps given range with given element or with a new element with specified name, if string has been passed.\n * **Note:** range to wrap should be a \"flat range\" (see {@link module:engine/model/range~Range#isFlat}). If not, error will be thrown.\n *\n * @chainable\n * @method module:engine/model/batch~Batch#wrap\n * @param {module:engine/model/range~Range} range Range to wrap.\n * @param {module:engine/model/element~Element|String} elementOrString Element or name of element to wrap the range with.\n */\nregister( 'wrap', function( range, elementOrString ) {\n\tif ( !range.isFlat ) {\n\t\t/**\n\t\t * Range to wrap is not flat.\n\t\t *\n\t\t * @error batch-wrap-range-not-flat\n\t\t */\n\t\tthrow new CKEditorError( 'batch-wrap-range-not-flat: Range to wrap is not flat.' );\n\t}\n\n\tlet element = elementOrString instanceof Element ? elementOrString : new Element( elementOrString );\n\n\tif ( element.childCount > 0 ) {\n\t\t/**\n\t\t * Element to wrap with is not empty.\n\t\t *\n\t\t * @error batch-wrap-element-not-empty\n\t\t */\n\t\tthrow new CKEditorError( 'batch-wrap-element-not-empty: Element to wrap with is not empty.' );\n\t}\n\n\tif ( element.parent !== null ) {\n\t\t/**\n\t\t * Element to wrap with is already attached to a tree model.\n\t\t *\n\t\t * @error batch-wrap-element-attached\n\t\t */\n\t\tthrow new CKEditorError( 'batch-wrap-element-attached: Element to wrap with is already attached to tree model.' );\n\t}\n\n\tconst delta = new WrapDelta();\n\tthis.addDelta( delta );\n\n\tlet insert = new InsertOperation( range.end, element, this.document.version );\n\tdelta.addOperation( insert );\n\tthis.document.applyOperation( insert );\n\n\tlet targetPosition = Position.createFromParentAndOffset( element, 0 );\n\tlet move = new MoveOperation( range.start, range.end.offset - range.start.offset, targetPosition, this.document.version );\n\tdelta.addOperation( move );\n\tthis.document.applyOperation( move );\n\n\treturn this;\n} );\n\nDeltaFactory.register( WrapDelta );\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/delta/wrapdelta.js\n// module id = 108\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/liverange\n */\n\nimport Range from './range';\nimport EmitterMixin from '@ckeditor/ckeditor5-utils/src/emittermixin';\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\n\n/**\n * `LiveRange` is a type of {@link module:engine/model/range~Range Range}\n * that updates itself as {@link module:engine/model/document~Document document}\n * is changed through operations. It may be used as a bookmark.\n *\n * **Note:** Be very careful when dealing with `LiveRange`. Each `LiveRange` instance bind events that might\n * have to be unbound. Use {@link module:engine/model/liverange~LiveRange#detach detach} whenever you don't need `LiveRange` anymore.\n */\nexport default class LiveRange extends Range {\n\t/**\n\t * Creates a live range.\n\t *\n\t * @see module:engine/model/range~Range\n\t */\n\tconstructor( start, end ) {\n\t\tsuper( start, end );\n\n\t\tbindWithDocument.call( this );\n\t}\n\n\t/**\n\t * Unbinds all events previously bound by `LiveRange`. Use it whenever you don't need `LiveRange` instance\n\t * anymore (i.e. when leaving scope in which it was declared or before re-assigning variable that was\n\t * referring to it).\n\t */\n\tdetach() {\n\t\tthis.stopListening();\n\t}\n\n\t/**\n\t * @see module:engine/model/range~Range.createIn\n\t * @static\n\t * @method module:engine/model/liverange~LiveRange.createIn\n\t * @param {module:engine/model/element~Element} element\n\t * @returns {module:engine/model/liverange~LiveRange}\n\t */\n\n\t/**\n\t * @see module:engine/model/range~Range.createFromPositionAndShift\n\t * @static\n\t * @method module:engine/model/liverange~LiveRange.createFromPositionAndShift\n\t * @param {module:engine/model/position~Position} position\n\t * @param {Number} shift\n\t * @returns {module:engine/model/liverange~LiveRange}\n\t */\n\n\t/**\n\t * @see module:engine/model/range~Range.createFromParentsAndOffsets\n\t * @static\n\t * @method module:engine/model/liverange~LiveRange.createFromParentsAndOffsets\n\t * @param {module:engine/model/element~Element} startElement\n\t * @param {Number} startOffset\n\t * @param {module:engine/model/element~Element} endElement\n\t * @param {Number} endOffset\n\t * @returns {module:engine/model/liverange~LiveRange}\n\t */\n\n\t/**\n\t * @see module:engine/model/range~Range.createFromRange\n\t * @static\n\t * @method module:engine/model/liverange~LiveRange.createFromRange\n\t * @param {module:engine/model/range~Range} range\n\t * @returns {module:engine/model/liverange~LiveRange}\n\t */\n\n\t/**\n\t * Fired when `LiveRange` instance is changed due to changes on {@link module:engine/model/document~Document}.\n\t *\n\t * @event change\n\t * @param {module:engine/model/range~Range} oldRange\n\t * Range with start and end position equal to start and end position of this live range before it got changed.\n\t */\n}\n\n/**\n * Binds this `LiveRange` to the {@link module:engine/model/document~Document document}\n * that owns this range's {@link module:engine/model/range~Range#root root}.\n *\n * @ignore\n * @private\n * @method module:engine/model/liverange~LiveRange#bindWithDocument\n */\nfunction bindWithDocument() {\n\t/*jshint validthis: true */\n\t// Operation types that a range can be transformed by.\n\tconst supportedTypes = new Set( [ 'insert', 'move', 'remove', 'reinsert' ] );\n\n\tthis.listenTo(\n\t\tthis.root.document,\n\t\t'change',\n\t\t( event, type, changes, batch, deltaType ) => {\n\t\t\tif ( supportedTypes.has( type ) ) {\n\t\t\t\ttransform.call( this, type, deltaType, changes.range, changes.sourcePosition );\n\t\t\t}\n\t\t},\n\t\t{ priority: 'high' }\n\t);\n}\n\n/**\n * Updates this range accordingly to the updates applied to the model. Bases on change events.\n *\n * @ignore\n * @private\n * @method transform\n * @param {String} [changeType] Type of change applied to the model document.\n * @param {String} [deltaType] Type of delta which introduced the change.\n * @param {module:engine/model/range~Range} targetRange Range containing the result of applied change.\n * @param {module:engine/model/position~Position} [sourcePosition] Source position for move, remove and reinsert change types.\n */\nfunction transform( changeType, deltaType, targetRange, sourcePosition ) {\n\t/* jshint validthis: true */\n\tconst howMany = targetRange.end.offset - targetRange.start.offset;\n\tlet targetPosition = targetRange.start;\n\n\tif ( changeType == 'move' ) {\n\t\t// Range._getTransformedByDocumentChange is expecting `targetPosition` to be \"before\" move\n\t\t// (before transformation). `targetRange.start` is already after the move happened.\n\t\t// We have to revert `targetPosition` to the state before the move.\n\t\ttargetPosition = targetPosition._getTransformedByInsertion( sourcePosition, howMany );\n\t}\n\n\tconst result = this._getTransformedByDocumentChange( changeType, deltaType, targetPosition, howMany, sourcePosition );\n\n\t// Decide whether moved part should be included in the range.\n\t//\n\t// First, this concerns only `move` change, because insert change includes inserted part always (changeType == 'move').\n\t// Second, this is a case only if moved range was intersecting with this range and was inserted into this range (result.length == 3).\n\tif ( changeType == 'move' && result.length == 3 ) {\n\t\t// `result[ 2 ]` is a \"common part\" of this range and moved range. We substitute that common part with the whole\n\t\t// `targetRange` because we want to include whole `targetRange` in this range.\n\t\tresult[ 2 ] = targetRange;\n\t}\n\n\tconst updated = Range.createFromRanges( result );\n\n\t// If anything changed, update the range and fire an event.\n\tif ( !updated.isEqual( this ) ) {\n\t\tconst oldRange = Range.createFromRange( this );\n\n\t\tthis.start = updated.start;\n\t\tthis.end = updated.end;\n\n\t\tthis.fire( 'change', oldRange );\n\t}\n}\n\nmix( LiveRange, EmitterMixin );\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/liverange.js\n// module id = 109\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/operation/markeroperation\n */\n\nimport Operation from './operation';\nimport Range from '../range';\n\n/**\n * @extends module:engine/model/operation/operation~Operation\n */\nexport default class MarkerOperation extends Operation {\n\t/**\n\t * @param {String} name Marker name.\n\t * @param {module:engine/model/range~Range} oldRange Marker range before the change.\n\t * @param {module:engine/model/range~Range} newRange Marker range after the change.\n\t * @param {module:engine/model/markercollection~MarkerCollection} markers Marker collection on which change should be executed.\n\t * @param {Number} baseVersion {@link module:engine/model/document~Document#version} on which the operation can be applied.\n\t */\n\tconstructor( name, oldRange, newRange, markers, baseVersion ) {\n\t\tsuper( baseVersion );\n\n\t\t/**\n\t\t * Marker name.\n\t\t *\n\t\t * @readonly\n\t\t * @member {String}\n\t\t */\n\t\tthis.name = name;\n\n\t\t/**\n\t\t * Marker range before the change.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/model/range~Range}\n\t\t */\n\t\tthis.oldRange = oldRange ? Range.createFromRange( oldRange ) : null;\n\n\t\t/**\n\t\t * Marker range after the change.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/model/range~Range}\n\t\t */\n\t\tthis.newRange = newRange ? Range.createFromRange( newRange ) : null;\n\n\t\t/**\n\t\t * Marker collection on which change should be executed.\n\t\t *\n\t\t * @private\n\t\t * @member {module:engine/model/markercollection~MarkerCollection}\n\t\t */\n\t\tthis._markers = markers;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tget type() {\n\t\treturn 'marker';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t * @returns {module:engine/model/operation/markeroperation~MarkerOperation}\n\t */\n\tclone() {\n\t\treturn new MarkerOperation( this.name, this.oldRange, this.newRange, this._markers, this.baseVersion );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t * @returns {module:engine/model/operation/markeroperation~MarkerOperation}\n\t */\n\tgetReversed() {\n\t\treturn new MarkerOperation( this.name, this.newRange, this.oldRange, this._markers, this.baseVersion + 1 );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\t_execute() {\n\t\tconst type = this.newRange ? 'set' : 'remove';\n\n\t\tthis._markers[ type ]( this.name, this.newRange );\n\n\t\treturn { name: this.name, type: type };\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\ttoJSON() {\n\t\tconst json = super.toJSON();\n\n\t\tdelete json._markers;\n\n\t\treturn json;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.operation.MarkerOperation';\n\t}\n\n\t/**\n\t * Creates `MarkerOperation` object from deserilized object, i.e. from parsed JSON string.\n\t *\n\t * @param {Object} json Deserialized JSON object.\n\t * @param {module:engine/model/document~Document} document Document on which this operation will be applied.\n\t * @returns {module:engine/model/operation/markeroperation~MarkerOperation}\n\t */\n\tstatic fromJSON( json, document ) {\n\t\treturn new MarkerOperation(\n\t\t\tjson.name,\n\t\t\tjson.oldRange ? Range.fromJSON( json.oldRange, document ) : null,\n\t\t\tjson.newRange ? Range.fromJSON( json.newRange, document ) : null,\n\t\t\tdocument.markers,\n\t\t\tjson.baseVersion\n\t\t);\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/operation/markeroperation.js\n// module id = 110\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/operation/reinsertoperation\n */\n\nimport MoveOperation from './moveoperation';\nimport RemoveOperation from './removeoperation';\n\n/**\n * Operation to reinsert previously removed nodes back to the non-graveyard root. This operation acts like\n * {@link module:engine/model/operation/moveoperation~MoveOperation} but it returns\n * {@link module:engine/model/operation/removeoperation~RemoveOperation} when reversed\n * and fires different change event.\n */\nexport default class ReinsertOperation extends MoveOperation {\n\t/**\n\t * Position where nodes will be re-inserted.\n\t *\n\t * @type {module:engine/model/position~Position}\n\t */\n\tget position() {\n\t\treturn this.targetPosition;\n\t}\n\n\t/**\n\t * @param {module:engine/model/position~Position} pos\n\t */\n\tset position( pos ) {\n\t\tthis.targetPosition = pos;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tget type() {\n\t\treturn 'reinsert';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t * @returns {module:engine/model/operation/removeoperation~RemoveOperation}\n\t */\n\tgetReversed() {\n\t\tconst removeOp = new RemoveOperation( this.targetPosition, this.howMany, this.baseVersion + 1 );\n\n\t\t// Make sure that nodes are put back into the `$graveyardHolder` from which they got reinserted.\n\t\tremoveOp.targetPosition = this.sourcePosition;\n\t\tremoveOp._needsHolderElement = false;\n\n\t\treturn removeOp;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.operation.ReinsertOperation';\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/operation/reinsertoperation.js\n// module id = 111\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/operation/renameoperation\n */\n\nimport Operation from './operation';\nimport Element from '../element';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\nimport Position from '../position';\n\n/**\n * Operation to change element's name.\n *\n * Using this class you can change element's name.\n *\n * @extends module:engine/model/operation/operation~Operation\n */\nexport default class RenameOperation extends Operation {\n\t/**\n\t * Creates an operation that changes element's name.\n\t *\n\t * @param {module:engine/model/position~Position} position Position before an element to change.\n\t * @param {String} oldName Current name of the element.\n\t * @param {String} newName New name for the element.\n\t * @param {Number} baseVersion {@link module:engine/model/document~Document#version} on which the operation can be applied.\n\t */\n\tconstructor( position, oldName, newName, baseVersion ) {\n\t\tsuper( baseVersion );\n\n\t\t/**\n\t\t * Position before an element to change.\n\t\t *\n\t\t * @member {module:engine/model/position~Position} module:engine/model/operation/renameoperation~RenameOperation#position\n\t\t */\n\t\tthis.position = position;\n\n\t\t/**\n\t\t * Current name of the element.\n\t\t *\n\t\t * @member {String} module:engine/model/operation/renameoperation~RenameOperation#oldName\n\t\t */\n\t\tthis.oldName = oldName;\n\n\t\t/**\n\t\t * New name for the element.\n\t\t *\n\t\t * @member {String} module:engine/model/operation/renameoperation~RenameOperation#newName\n\t\t */\n\t\tthis.newName = newName;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tget type() {\n\t\treturn 'rename';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t * @returns {module:engine/model/operation/renameoperation~RenameOperation}\n\t */\n\tclone() {\n\t\treturn new RenameOperation( Position.createFromPosition( this.position ), this.oldName, this.newName, this.baseVersion );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t * @returns {module:engine/model/operation/renameoperation~RenameOperation}\n\t */\n\tgetReversed() {\n\t\treturn new RenameOperation( Position.createFromPosition( this.position ), this.newName, this.oldName, this.baseVersion + 1 );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\t_execute() {\n\t\t// Validation.\n\t\tconst element = this.position.nodeAfter;\n\n\t\tif ( !( element instanceof Element ) ) {\n\t\t\t/**\n\t\t\t * Given position is invalid or node after it is not instance of Element.\n\t\t\t *\n\t\t\t * @error rename-operation-wrong-position\n\t\t\t */\n\t\t\tthrow new CKEditorError(\n\t\t\t\t'rename-operation-wrong-position: Given position is invalid or node after it is not an instance of Element.'\n\t\t\t);\n\t\t} else if ( element.name !== this.oldName ) {\n\t\t\t/**\n\t\t\t * Element to change has different name than operation's old name.\n\t\t\t *\n\t\t\t * @error rename-operation-wrong-name\n\t\t\t */\n\t\t\tthrow new CKEditorError(\n\t\t\t\t'rename-operation-wrong-name: Element to change has different name than operation\\'s old name.'\n\t\t\t);\n\t\t}\n\n\t\t// If value to set is same as old value, don't do anything.\n\t\t// By not returning `undefined`, this operation will be seen as `NoOperation` - that means\n\t\t// that it won't generate any events, etc. `RenameOperation` with such parameters may be\n\t\t// a result of Operational Transformation.\n\t\tif ( this.oldName == this.newName ) {\n\t\t\treturn;\n\t\t}\n\n\t\telement.name = this.newName;\n\n\t\treturn { element, oldName: this.oldName };\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.operation.RenameOperation';\n\t}\n\n\t/**\n\t * Creates `RenameOperation` object from deserialized object, i.e. from parsed JSON string.\n\t *\n\t * @param {Object} json Deserialized JSON object.\n\t * @param {module:engine/model/document~Document} document Document on which this operation will be applied.\n\t * @returns {module:engine/model/operation/attributeoperation~AttributeOperation}\n\t */\n\tstatic fromJSON( json, document ) {\n\t\treturn new RenameOperation( Position.fromJSON( json.position, document ), json.oldName, json.newName, json.baseVersion );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/operation/renameoperation.js\n// module id = 112\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/operation/rootattributeoperation\n */\n\nimport Operation from './operation';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/**\n * Operation to change root element's attribute. Using this class you can add, remove or change value of the attribute.\n *\n * This operation is needed, because root elements can't be changed through\n * @link module:engine/model/operation/attributeoperation~AttributeOperation}.\n * It is because {@link module:engine/model/operation/attributeoperation~AttributeOperation}\n * requires a range to change and root element can't\n * be a part of range because every {@link module:engine/model/position~Position} has to be inside a root.\n * {@link module:engine/model/position~Position} can't be created before a root element.\n *\n * @extends module:engine/model/operation/operation~Operation\n */\nexport default class RootAttributeOperation extends Operation {\n\t/**\n\t * Creates an operation that changes, removes or adds attributes on root element.\n\t *\n\t * @see module:engine/model/operation/attributeoperation~AttributeOperation\n\t * @param {module:engine/model/rootelement~RootElement} root Root element to change.\n\t * @param {String} key Key of an attribute to change or remove.\n\t * @param {*} oldValue Old value of the attribute with given key or `null` if adding a new attribute.\n\t * @param {*} newValue New value to set for the attribute. If `null`, then the operation just removes the attribute.\n\t * @param {Number} baseVersion {@link module:engine/model/document~Document#version} on which the operation can be applied.\n\t */\n\tconstructor( root, key, oldValue, newValue, baseVersion ) {\n\t\tsuper( baseVersion );\n\n\t\t/**\n\t\t * Root element to change.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/model/rootelement~RootElement}\n\t\t */\n\t\tthis.root = root;\n\n\t\t/**\n\t\t * Key of an attribute to change or remove.\n\t\t *\n\t\t * @readonly\n\t\t * @member {String}\n\t\t */\n\t\tthis.key = key;\n\n\t\t/**\n\t\t * Old value of the attribute with given key or `null` if adding a new attribute.\n\t\t *\n\t\t * @readonly\n\t\t * @member {*}\n\t\t */\n\t\tthis.oldValue = oldValue;\n\n\t\t/**\n\t\t * New value to set for the attribute. If `null`, then the operation just removes the attribute.\n\t\t *\n\t\t * @readonly\n\t\t * @member {*}\n\t\t */\n\t\tthis.newValue = newValue;\n\t}\n\n\tget type() {\n\t\tif ( this.oldValue === null ) {\n\t\t\treturn 'addRootAttribute';\n\t\t} else if ( this.newValue === null ) {\n\t\t\treturn 'removeRootAttribute';\n\t\t} else {\n\t\t\treturn 'changeRootAttribute';\n\t\t}\n\t}\n\n\t/**\n\t * @returns {module:engine/model/operation/rootattributeoperation~RootAttributeOperation}\n\t */\n\tclone() {\n\t\treturn new RootAttributeOperation( this.root, this.key, this.oldValue, this.newValue, this.baseVersion );\n\t}\n\n\t/**\n\t * @returns {module:engine/model/operation/rootattributeoperation~RootAttributeOperation}\n\t */\n\tgetReversed() {\n\t\treturn new RootAttributeOperation( this.root, this.key, this.newValue, this.oldValue, this.baseVersion + 1 );\n\t}\n\n\t_execute() {\n\t\tif ( this.oldValue !== null && this.root.getAttribute( this.key ) !== this.oldValue ) {\n\t\t\t/**\n\t\t\t * The attribute which should be removed does not exists for the given node.\n\t\t\t *\n\t\t\t * @error rootattribute-operation-wrong-old-value\n\t\t\t * @param {module:engine/model/rootelement~RootElement} root\n\t\t\t * @param {String} key\n\t\t\t * @param {*} value\n\t\t\t */\n\t\t\tthrow new CKEditorError(\n\t\t\t\t'rootattribute-operation-wrong-old-value: Changed node has different attribute value than operation\\'s old attribute value.',\n\t\t\t\t{ root: this.root, key: this.key }\n\t\t\t);\n\t\t}\n\n\t\tif ( this.oldValue === null && this.newValue !== null && this.root.hasAttribute( this.key ) ) {\n\t\t\t/**\n\t\t\t * The attribute with given key already exists for the given node.\n\t\t\t *\n\t\t\t * @error rootattribute-operation-attribute-exists\n\t\t\t * @param {module:engine/model/rootelement~RootElement} root\n\t\t\t * @param {String} key\n\t\t\t */\n\t\t\tthrow new CKEditorError(\n\t\t\t\t'rootattribute-operation-attribute-exists: The attribute with given key already exists.',\n\t\t\t\t{ root: this.root, key: this.key }\n\t\t\t);\n\t\t}\n\n\t\tif ( this.newValue !== null ) {\n\t\t\tthis.root.setAttribute( this.key, this.newValue );\n\t\t} else {\n\t\t\tthis.root.removeAttribute( this.key );\n\t\t}\n\n\t\treturn { root: this.root, key: this.key, oldValue: this.oldValue, newValue: this.newValue };\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.operation.RootAttributeOperation';\n\t}\n\n\t/**\n\t * Creates RootAttributeOperation object from deserilized object, i.e. from parsed JSON string.\n\t *\n\t * @param {Object} json Deserialized JSON object.\n\t * @param {module:engine/model/document~Document} document Document on which this operation will be applied.\n\t * @returns {module:engine/model/operation/rootattributeoperation~RootAttributeOperation}\n\t */\n\tstatic fromJSON( json, document ) {\n\t\tif ( !document.hasRoot( json.root ) ) {\n\t\t\t/**\n\t\t\t * Cannot create RootAttributeOperation for document. Root with specified name does not exist.\n\t\t\t *\n\t\t\t * @error rootattributeoperation-fromjson-no-root\n\t\t\t * @param {String} rootName\n\t\t\t */\n\t\t\tthrow new CKEditorError(\n\t\t\t\t'rootattribute-operation-fromjson-no-root: Cannot create RootAttributeOperation. Root with specified name does not exist.',\n\t\t\t\t{ rootName: json }\n\t\t\t);\n\t\t}\n\n\t\treturn new RootAttributeOperation( document.getRoot( json.root ), json.key, json.oldValue, json.newValue, json.baseVersion );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/operation/rootattributeoperation.js\n// module id = 113\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/attributeelement\n */\n\nimport Element from './element';\n\n// Default attribute priority.\nconst DEFAULT_PRIORITY = 10;\n\n/**\n * Attributes are elements which define document presentation. They are mostly elements like `<b>` or `<span>`.\n * Attributes can be broken and merged by the {@link module:engine/view/writer~writer view writer}.\n *\n * Editing engine does not define fixed HTML DTD. This is why the type of the {@link module:engine/view/element~Element} need to\n * be defined by the feature developer. Creating an element you should use {@link module:engine/view/containerelement~ContainerElement}\n * class or `AttributeElement`.\n *\n * @extends module:engine/view/element~Element\n */\nexport default class AttributeElement extends Element {\n\t/**\n\t * Creates a attribute element.\n\t *\n\t * @see module:engine/view/element~Element\n\t */\n\tconstructor( name, attrs, children ) {\n\t\tsuper( name, attrs, children );\n\n\t\t/**\n\t\t * Element priority. Attributes have to have the same priority to be\n\t\t * {@link module:engine/view/element~Element#isSimilar similar}. Setting different priorities on similar\n \t\t * nodes may prevent merging, e.g. two `<abbr>` nodes next each other shouldn't be merged.\n\t\t *\n\t\t * @member {Number}\n\t\t */\n\t\tthis.priority = DEFAULT_PRIORITY;\n\n\t\t/**\n\t\t * Returns block {@link module:engine/view/filler filler} offset or `null` if block filler is not needed.\n\t\t *\n\t\t * @method #getFillerOffset\n\t\t * @returns {Number|null} Block filler offset or `null` if block filler is not needed.\n\t\t */\n\t\tthis.getFillerOffset = getFillerOffset;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tis( type, name = null ) {\n\t\tif ( !name ) {\n\t\t\treturn type == 'attributeElement' || super.is( type );\n\t\t} else {\n\t\t\treturn ( type == 'attributeElement' && name == this.name ) || super.is( type, name );\n\t\t}\n\t}\n\n\t/**\n\t * Clones provided element with priority.\n\t *\n\t * @param {Boolean} deep If set to `true` clones element and all its children recursively. When set to `false`,\n\t * element will be cloned without any children.\n\t * @returns {module:engine/view/attributeelement~AttributeElement} Clone of this element.\n\t */\n\tclone( deep ) {\n\t\tconst cloned = super.clone( deep );\n\n\t\t// Clone priority too.\n\t\tcloned.priority = this.priority;\n\n\t\treturn cloned;\n\t}\n\n\t/**\n\t * Checks if this element is similar to other element.\n\t * Both elements should have the same name, attributes and priority to be considered as similar.\n\t * Two similar elements can contain different set of children nodes.\n\t *\n\t * @param {module:engine/view/element~Element} otherElement\n\t * @returns {Boolean}\n\t */\n\tisSimilar( otherElement ) {\n\t\treturn super.isSimilar( otherElement ) && this.priority == otherElement.priority;\n\t}\n}\n\n/**\n * Default attribute priority.\n *\n * @member {Number} module:engine/view/attributeelement~AttributeElement.DEFAULT_PRIORITY\n */\nAttributeElement.DEFAULT_PRIORITY = DEFAULT_PRIORITY;\n\n// Returns block {@link module:engine/view/filler~Filler filler} offset or `null` if block filler is not needed.\n//\n// @returns {Number|null} Block filler offset or `null` if block filler is not needed.\nfunction getFillerOffset() {\n\t/*jshint validthis:true */\n\n\t// <b>foo</b> does not need filler.\n\tif ( this.childCount ) {\n\t\treturn null;\n\t}\n\n\tlet element = this.parent;\n\n\t// <p><b></b></p> needs filler -> <p><b><br></b></p>\n\twhile ( element && element.is( 'attributeElement' ) ) {\n\t\tif ( element.childCount > 1 ) {\n\t\t\treturn null;\n\t\t}\n\n\t\telement = element.parent;\n\t}\n\n\tif ( !element || element.childCount > 1 ) {\n\t\treturn null;\n\t}\n\n\treturn 0;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/view/attributeelement.js\n// module id = 114\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/documentfragment\n */\n\nimport Text from './text';\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\nimport isIterable from '@ckeditor/ckeditor5-utils/src/isiterable';\nimport EmitterMixin from '@ckeditor/ckeditor5-utils/src/emittermixin';\n\n/**\n * DocumentFragment class.\n */\nexport default class DocumentFragment {\n\t/**\n\t * Creates new DocumentFragment instance.\n\t *\n\t * @param {module:engine/view/node~Node|Iterable.<module:engine/view/node~Node>} [children] List of nodes to be inserted into\n\t * created document fragment.\n\t */\n\tconstructor( children ) {\n\t\t/**\n\t\t * Array of child nodes.\n\t\t *\n\t\t * @protected\n\t\t * @member {Array.<module:engine/view/element~Element>} module:engine/view/documentfragment~DocumentFragment#_children\n\t\t */\n\t\tthis._children = [];\n\n\t\tif ( children ) {\n\t\t\tthis.insertChildren( 0, children );\n\t\t}\n\t}\n\n\t/**\n\t * Iterates over nodes added to this DocumentFragment.\n\t */\n\t[ Symbol.iterator ]() {\n\t\treturn this._children[ Symbol.iterator ]();\n\t}\n\n\t/**\n\t * Number of child nodes in this document fragment.\n\t *\n\t * @readonly\n\t * @type {Number}\n\t */\n\tget childCount() {\n\t\treturn this._children.length;\n\t}\n\n\t/**\n\t * Is `true` if there are no nodes inside this document fragment, `false` otherwise.\n\t *\n\t * @readonly\n\t * @type {Boolean}\n\t */\n\tget isEmpty() {\n\t\treturn this.childCount === 0;\n\t}\n\n\t/**\n\t * Artificial root of `DocumentFragment`. Returns itself. Added for compatibility reasons.\n\t *\n\t * @readonly\n\t * @type {module:engine/model/documentfragment~DocumentFragment}\n\t */\n\tget root() {\n\t\treturn this;\n\t}\n\n\t/**\n\t * Artificial parent of `DocumentFragment`. Returns `null`. Added for compatibility reasons.\n\t *\n\t * @readonly\n\t * @type {null}\n\t */\n\tget parent() {\n\t\treturn null;\n\t}\n\n\t/**\n\t * Checks whether given view tree object is of given type.\n\t *\n\t * Read more in {@link module:engine/view/node~Node#is}.\n\t *\n\t * @param {String} type\n\t * @returns {Boolean}\n\t */\n\tis( type ) {\n\t\treturn type == 'documentFragment';\n\t}\n\n\t/**\n\t * {@link module:engine/view/documentfragment~DocumentFragment#insertChildren Insert} a child node or a list of child nodes at the end\n\t * and sets the parent of these nodes to this fragment.\n\t *\n\t * @param {module:engine/view/node~Node|Iterable.<module:engine/view/node~Node>} nodes Node or the list of nodes to be inserted.\n\t * @returns {Number} Number of appended nodes.\n\t */\n\tappendChildren( nodes ) {\n\t\treturn this.insertChildren( this.childCount, nodes );\n\t}\n\n\t/**\n\t * Gets child at the given index.\n\t *\n\t * @param {Number} index Index of child.\n\t * @returns {module:engine/view/node~Node} Child node.\n\t */\n\tgetChild( index ) {\n\t\treturn this._children[ index ];\n\t}\n\n\t/**\n\t * Gets index of the given child node. Returns `-1` if child node is not found.\n\t *\n\t * @param {module:engine/view/node~Node} node Child node.\n\t * @returns {Number} Index of the child node.\n\t */\n\tgetChildIndex( node ) {\n\t\treturn this._children.indexOf( node );\n\t}\n\n\t/**\n\t * Gets child nodes iterator.\n\t *\n\t * @returns {Iterable.<module:engine/view/node~Node>} Child nodes iterator.\n\t */\n\tgetChildren() {\n\t\treturn this._children[ Symbol.iterator ]();\n\t}\n\n\t/**\n\t * Inserts a child node or a list of child nodes on the given index and sets the parent of these nodes to\n\t * this fragment.\n\t *\n\t * @param {Number} index Position where nodes should be inserted.\n\t * @param {module:engine/view/node~Node|Iterable.<module:engine/view/node~Node>} nodes Node or list of nodes to be inserted.\n\t * @returns {Number} Number of inserted nodes.\n\t */\n\tinsertChildren( index, nodes ) {\n\t\tthis._fireChange( 'children', this );\n\t\tlet count = 0;\n\n\t\tnodes = normalize( nodes );\n\n\t\tfor ( let node of nodes ) {\n\t\t\tnode.parent = this;\n\n\t\t\tthis._children.splice( index, 0, node );\n\t\t\tindex++;\n\t\t\tcount++;\n\t\t}\n\n\t\treturn count;\n\t}\n\n\t/**\n\t * Removes number of child nodes starting at the given index and set the parent of these nodes to `null`.\n\t *\n\t * @param {Number} index Number of the first node to remove.\n\t * @param {Number} [howMany=1] Number of nodes to remove.\n\t * @returns {Array.<module:engine/view/node~Node>} The array of removed nodes.\n\t */\n\tremoveChildren( index, howMany = 1 ) {\n\t\tthis._fireChange( 'children', this );\n\n\t\tfor ( let i = index; i < index + howMany; i++ ) {\n\t\t\tthis._children[ i ].parent = null;\n\t\t}\n\n\t\treturn this._children.splice( index, howMany );\n\t}\n\n\t/**\n\t * Fires `change` event with given type of the change.\n\t *\n\t * @private\n\t * @param {module:engine/view/document~ChangeType} type Type of the change.\n\t * @param {module:engine/view/node~Node} node Changed node.\n\t * @fires module:engine/view/node~Node#change\n\t */\n\t_fireChange( type, node ) {\n\t\tthis.fire( 'change:' + type, node );\n\t}\n}\n\nmix( DocumentFragment, EmitterMixin );\n\n// Converts strings to Text and non-iterables to arrays.\n//\n// @param {String|module:engine/view/node~Node|Iterable.<String|module:engine/view/node~Node>}\n// @return {Iterable.<module:engine/view/node~Node>}\nfunction normalize( nodes ) {\n\t// Separate condition because string is iterable.\n\tif ( typeof nodes == 'string' ) {\n\t\treturn [ new Text( nodes ) ];\n\t}\n\n\tif ( !isIterable( nodes ) ) {\n\t\tnodes = [ nodes ];\n\t}\n\n\t// Array.from to enable .map() on non-arrays.\n\treturn Array.from( nodes ).map( ( node ) => typeof node == 'string' ? new Text( node ) : node );\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/view/documentfragment.js\n// module id = 115\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/observer/domeventdata\n */\n\nimport extend from '@ckeditor/ckeditor5-utils/src/lib/lodash/extend';\n\n/**\n * Information about a DOM event in context of the {@link module:engine/view/document~Document}.\n * It wraps the native event, which usually should not be used as the wrapper contains\n * additional data (like key code for keyboard events).\n */\nexport default class DomEventData {\n\t/**\n\t * @param {module:engine/view/document~Document} document The instance of the tree view Document.\n\t * @param {Event} domEvent The DOM event.\n\t * @param {Object} [additionalData] Additional properties that the instance should contain.\n\t */\n\tconstructor( document, domEvent, additionalData ) {\n\t\t/**\n\t\t * The instance of the document.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/view/document~Document} module:engine/view/observer/observer~Observer.DomEvent#view\n\t\t */\n\t\tthis.document = document;\n\n\t\t/**\n\t\t * The DOM event.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Event} module:engine/view/observer/observer~Observer.DomEvent#domEvent\n\t\t */\n\t\tthis.domEvent = domEvent;\n\n\t\t/**\n\t\t * The DOM target.\n\t\t *\n\t\t * @readonly\n\t\t * @member {HTMLElement} module:engine/view/observer/observer~Observer.DomEvent#target\n\t\t */\n\t\tthis.domTarget = domEvent.target;\n\n\t\textend( this, additionalData );\n\t}\n\n\t/**\n\t * The tree view element representing the target.\n\t *\n\t * @readonly\n\t * @type module:engine/view/element~Element\n\t */\n\tget target() {\n\t\treturn this.document.domConverter.getCorrespondingViewElement( this.domTarget );\n\t}\n\n\t/**\n\t * Prevents the native's event default action.\n\t */\n\tpreventDefault() {\n\t\tthis.domEvent.preventDefault();\n\t}\n\n\t/**\n\t * Stops native event propagation.\n\t */\n\tstopPropagation() {\n\t\tthis.domEvent.stopPropagation();\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/view/observer/domeventdata.js\n// module id = 116\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2016, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/focuscycler\n */\n\n/**\n * Helps cycling over focusable views in a {@link module:ui/viewcollection~ViewCollection}\n * when the focus is tracked by {@link module:utils/focustracker~FocusTracker} instance.\n *\n * It requires a collection of focusable views and associated focus tracker:\n *\n *\t\tconst focusables = new ViewCollection();\n *\t\tconst focusTracker = new FocusTracker();\n *\n *\t\t// Add focusables to the focus tracker.\n *\t\tfocusTracker.add( ... );\n *\n * The cycler can be used manually:\n *\n *\t\tconst cycler = new FocusCycler( { focusables, focusTracker } );\n *\n *\t\t// Will focus the first forusable view in #focusables.\n *\t\tcycler.focusFirst();\n *\n *\t\t// Will log next focusable item in #focusables.\n *\t\tconsole.log( cycler.next );\n *\n * or it can be used as an automated, keystroke–detecting utility:\n *\n *\t\tconst keystrokeHandler = new KeystrokeHandler();\n *\n *\t\t// Activate the keystroke handler.\n *\t\tkeystrokeHandler.listenTo( sourceOfEvents );\n *\n *\t\tconst cycler = new FocusCycler( {\n *\t\t\tfocusables, focusTracker, keystrokeHandler,\n *\t\t\tactions: {\n *\t\t\t\t// When arrowup of arrowleft is detected by the #keystrokeHandler\n *\t\t\t\t// focusPrevious() will be called by the cycler.\n *\t\t\t\tfocusPrevious: [ 'arrowup', 'arrowleft' ],\n *\t\t\t}\n *\t\t} );\n */\nexport default class FocusCycler {\n\t/**\n\t * Creates an instance of the focus cycler utility.\n\t *\n\t * @param {Object} options Configuration options.\n\t * @param {module:utils/collection~Collection|Object} options.focusables\n\t * @param {module:utils/focustracker~FocusTracker} options.focusTracker\n\t * @param {module:utils/keystrokehandler~KeystrokeHandler} [options.keystrokeHandler]\n\t * @param {Object} [options.actions]\n\t */\n\tconstructor( options ) {\n\t\tObject.assign( this, options );\n\n\t\t/**\n\t\t * A view collection the cycler operates on.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:utils/collection~Collection} #focusables\n\t\t */\n\n\t\t/**\n\t\t * A focus tracker instance that cycler uses to determine focus\n\t\t * state in {@link #focusables}.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:utils/focustracker~FocusTracker} #focusTracker\n\t\t */\n\n\t\t/**\n\t\t * Instance of the {@link module:utils/keystrokehandler~KeystrokeHandler}.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:utils/keystrokehandler~KeystrokeHandler} #keystrokeHandler\n\t\t */\n\n\t\t/**\n\t\t * Actions that the cycler can take when a keystroke is pressed. Requires\n\t\t * `options.keystrokeHandler` to be passed and working. When an action is\n\t\t * performed, the event the keystroke fired is will be `preventDefault` and\n\t\t * `stopPropagation` in DOM.\n\t\t *\n\t\t *\t\tactions: {\n\t\t *\t\t\t// Will call #focusPrevious() when arrowleft or arrowup is pressed.\n\t\t *\t\t\tfocusPrevious: [ 'arrowleft', 'arrowup' ],\n\t\t *\n\t\t *\t\t\t// Will call #focusNext() when arrowdown is pressed.\n\t\t *\t\t\tfocusNext: 'arrowdown'\n\t\t *\t\t}\n\t\t *\n\t\t * @readonly\n\t\t * @member {Object} #actions\n\t\t */\n\n\t\tif ( options.actions && options.keystrokeHandler ) {\n\t\t\tfor ( let methodName in options.actions ) {\n\t\t\t\tlet actions = options.actions[ methodName ];\n\n\t\t\t\tif ( typeof actions == 'string' ) {\n\t\t\t\t\tactions = [ actions ];\n\t\t\t\t}\n\n\t\t\t\tfor ( let keystroke of actions ) {\n\t\t\t\t\toptions.keystrokeHandler.set( keystroke, ( data, cancel ) => {\n\t\t\t\t\t\tthis[ methodName ]();\n\t\t\t\t\t\tcancel();\n\t\t\t\t\t} );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Returns the first focusable view in {@link #focusables}.\n\t * `null` if there's none.\n\t *\n\t * @readonly\n\t * @member {module:ui/view~View|null} #first\n\t */\n\tget first() {\n\t\treturn this.focusables.find( isFocusable ) || null;\n\t}\n\n\t/**\n\t * Returns the last focusable view in {@link #focusables}.\n\t * `null` if there's none.\n\t *\n\t * @readonly\n\t * @member {module:ui/view~View|null} #last\n\t */\n\tget last() {\n\t\treturn this.focusables.filter( isFocusable ).slice( -1 )[ 0 ] || null;\n\t}\n\n\t/**\n\t * Returns the next focusable view in {@link #focusables} based on {@link #current}.\n\t * `null` if there's none.\n\t *\n\t * @readonly\n\t * @member {module:ui/view~View|null} #next\n\t */\n\tget next() {\n\t\treturn this._getFocusableItem( 1 );\n\t}\n\n\t/**\n\t * Returns the previous focusable view in {@link #focusables} based on {@link #current}.\n\t * `null` if there's none.\n\t *\n\t * @readonly\n\t * @member {module:ui/view~View|null} #previous\n\t */\n\tget previous() {\n\t\treturn this._getFocusableItem( -1 );\n\t}\n\n\t/**\n\t * An index of the view in the {@link #focusables} which is focused according\n\t * to {@link #focusTracker}. `null` when there's no such view.\n\t *\n\t * @readonly\n\t * @member {Number|null} #current\n\t */\n\tget current() {\n\t\tlet index = null;\n\n\t\t// There's no focused view in the focusables.\n\t\tif ( this.focusTracker.focusedElement === null ) {\n\t\t\treturn null;\n\t\t}\n\n\t\tthis.focusables.find( ( view, viewIndex ) => {\n\t\t\tconst focused = view.element === this.focusTracker.focusedElement;\n\n\t\t\tif ( focused ) {\n\t\t\t\tindex = viewIndex;\n\t\t\t}\n\n\t\t\treturn focused;\n\t\t} );\n\n\t\treturn index;\n\t}\n\n\t/**\n\t * Focuses the {@link #first} item.\n\t */\n\tfocusFirst() {\n\t\tthis._focus( this.first );\n\t}\n\n\t/**\n\t * Focuses the {@link #last} item.\n\t */\n\tfocusLast() {\n\t\tthis._focus( this.last );\n\t}\n\n\t/**\n\t * Focuses the {@link #next} item.\n\t */\n\tfocusNext() {\n\t\tthis._focus( this.next );\n\t}\n\n\t/**\n\t * Focuses the {@link #previous} item.\n\t */\n\tfocusPrevious() {\n\t\tthis._focus( this.previous );\n\t}\n\n\t/**\n\t * Focuses the given view, if exists.\n\t *\n\t * @protected\n\t * @param {module:ui/view~View} view\n\t */\n\t_focus( view ) {\n\t\tif ( view ) {\n\t\t\tview.focus();\n\t\t}\n\t}\n\n\t/**\n\t * Returns the next/previous focusable view in {@link #focusables} with respect\n\t * to {@link #current}.\n\t *\n\t * @protected\n\t * @param {Number} step Either `1` for checking forward of {@link #current} or\n\t * `-1` for checking backwards.\n\t * @returns {module:ui/view~View|null}\n\t */\n\t_getFocusableItem( step ) {\n\t\t// Cache for speed.\n\t\tconst current = this.current;\n\t\tconst collectionLength = this.focusables.length;\n\n\t\tif ( !collectionLength || current === null ) {\n\t\t\treturn null;\n\t\t}\n\n\t\t// Cycle in both directions.\n\t\tlet index = ( current + collectionLength + step ) % collectionLength;\n\n\t\tdo {\n\t\t\tlet view = this.focusables.get( index );\n\n\t\t\t// TODO: Check if view is visible.\n\t\t\tif ( isFocusable( view ) ) {\n\t\t\t\treturn view;\n\t\t\t}\n\n\t\t\t// Cycle in both directions.\n\t\t\tindex = ( index + collectionLength + step ) % collectionLength;\n\t\t} while ( index !== current );\n\n\t\treturn null;\n\t}\n}\n\n// Checks whether an view is focusable.\n//\n// @private\n// @param {module:ui/view~View} view A view to be checked.\n// @returns {Boolean}\nfunction isFocusable( view ) {\n\treturn view.focus;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-ui/src/focuscycler.js\n// module id = 117\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/viewcollection\n */\n\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\nimport ObservableMixin from '@ckeditor/ckeditor5-utils/src/observablemixin';\nimport Collection from '@ckeditor/ckeditor5-utils/src/collection';\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\n\n/**\n * Collects {@link module:ui/view~View} instances.\n *\n * @extends module:utils/collection~Collection\n * @mixes module:utils/observablemixin~ObservableMixin\n */\nexport default class ViewCollection extends Collection {\n\t/**\n\t * Creates a new {@link module:ui/viewcollection~ViewCollection} instance.\n\t *\n\t * @param {module:utils/locale~Locale} [locale] The {@link module:core/editor~Editor editor's locale} instance.\n\t */\n\tconstructor( locale ) {\n\t\tsuper( {\n\t\t\t// An #id Number attribute should be legal and not break the `ViewCollection` instance.\n\t\t\t// https://github.com/ckeditor/ckeditor5-ui/issues/93\n\t\t\tidProperty: 'viewUid'\n\t\t} );\n\n\t\t// Handle {@link module:ui/view~View#element} in DOM when a new view is added to the collection.\n\t\tthis.on( 'add', ( evt, view, index ) => {\n\t\t\tif ( view.element && this._parentElement ) {\n\t\t\t\tthis._parentElement.insertBefore( view.element, this._parentElement.children[ index ] );\n\t\t\t}\n\t\t} );\n\n\t\t// Handle {@link module:ui/view~View#element} in DOM when a view is removed from the collection.\n\t\tthis.on( 'remove', ( evt, view ) => {\n\t\t\tif ( view.element && this._parentElement ) {\n\t\t\t\tview.element.remove();\n\t\t\t}\n\t\t} );\n\n\t\t/**\n\t\t * The {@link module:core/editor~Editor editor's locale} instance.\n\t\t *\n\t\t * @member {module:utils/locale~Locale}\n\t\t */\n\t\tthis.locale = locale;\n\n\t\t/**\n\t\t * Set to `true` once the parent's {@link module:ui/view~View#ready} is true, which means\n\t\t * that all the views in the collection are also ready (which can be asynchronous).\n\t\t *\n\t\t * @readonly\n\t\t * @observable\n\t\t * @member {Boolean} #ready\n\t\t */\n\t\tthis.set( 'ready', false );\n\n\t\t/**\n\t\t * A parent element within which child views are rendered and managed in DOM.\n\t\t *\n\t\t * @protected\n\t\t * @member {HTMLElement}\n\t\t */\n\t\tthis._parentElement = null;\n\t}\n\n\t/**\n\t * Initializes child views by injecting {@link module:ui/view~View#element} into DOM\n\t * and calling {@link module:ui/view~View#init}.\n\t *\n\t * @returns {Promise} A Promise resolved when the initialization process is finished.\n\t */\n\tinit() {\n\t\tif ( this.ready ) {\n\t\t\t/**\n\t\t\t * This ViewCollection has already been initialized.\n\t\t\t *\n\t\t\t * @error ui-viewcollection-init-reinit\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'ui-viewcollection-init-reinit: This ViewCollection has already been initialized.' );\n\t\t}\n\n\t\treturn Promise.all( this.map( v => v.init() ) )\n\t\t\t.then( () => {\n\t\t\t\tthis.ready = true;\n\t\t\t} );\n\t}\n\n\t/**\n\t * Destroys the view collection along with child views.\n\t *\n\t * @returns {Promise} A Promise resolved when the destruction process is finished.\n\t */\n\tdestroy() {\n\t\tlet promises = [];\n\n\t\tfor ( let view of this ) {\n\t\t\tpromises.push( view.destroy() );\n\t\t}\n\n\t\treturn Promise.all( promises );\n\t}\n\n\t/**\n\t * Adds a child view to the collection. If {@link module:ui/viewcollection~ViewCollection#ready}, the child view\n\t * is also initialized when added.\n\t *\n\t * @param {module:ui/view~View} view A child view.\n\t * @param {Number} [index] Index at which the child will be added to the collection.\n\t * @returns {Promise} A Promise resolved when the child {@link module:ui/view~View#init} is done.\n\t */\n\tadd( view, index ) {\n\t\tsuper.add( view, index );\n\n\t\t// {@link module:ui/view~View#init} returns `Promise`.\n\t\tlet promise = Promise.resolve();\n\n\t\tif ( this.ready && !view.ready ) {\n\t\t\tpromise = promise.then( () => {\n\t\t\t\treturn view.init();\n\t\t\t} );\n\t\t}\n\n\t\treturn promise;\n\t}\n\n\t/**\n\t * Sets {@link #_parentElement} of this collection.\n\t *\n\t * @param {HTMLElement} element A new parent.\n\t */\n\tsetParent( elementOrDocFragment ) {\n\t\tthis._parentElement = elementOrDocFragment;\n\t}\n\n\t/**\n\t * Delegates selected events coming from within the collection to desired {@link module:utils/emittermixin~EmitterMixin}.\n\t *\n\t * For instance:\n\t *\n\t *\t\tconst viewA = new View();\n\t *\t\tconst viewB = new View();\n\t *\t\tconst viewC = new View();\n\t *\n\t *\t\tconst views = parentView.createCollection();\n\t *\n\t *\t\tviews.delegate( 'eventX' ).to( viewB );\n\t *\t\tviews.delegate( 'eventX', 'eventY' ).to( viewC );\n\t *\n\t *\t\tviews.add( viewA );\n\t *\n\t * then `eventX` is delegated (fired by) `viewB` and `viewC` along with `customData`:\n\t *\n\t *\t\tviewA.fire( 'eventX', customData );\n\t *\n\t * and `eventY` is delegated (fired by) `viewC` along with `customData`:\n\t *\n\t *\t\tviewA.fire( 'eventY', customData );\n\t *\n\t * See {@link module:utils/emittermixin~EmitterMixin#delegate}.\n\t *\n\t * @param {...String} events {@link module:ui/view~View} event names to be delegated to another {@link\n\t * module:utils/emittermixin~EmitterMixin}.\n\t * @returns {module:ui/viewcollection~ViewCollection#delegate.to}\n\t */\n\tdelegate( ...events ) {\n\t\tif ( !events.length || !isStringArray( events ) ) {\n\t\t\t/**\n\t\t\t * All event names must be strings.\n\t\t\t *\n\t\t\t * @error ui-viewcollection-delegate-wrong-events\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'ui-viewcollection-delegate-wrong-events: All event names must be strings.' );\n\t\t}\n\n\t\treturn {\n\t\t\t/**\n\t\t\t * Selects destination for {@link module:utils/emittermixin~EmitterMixin#delegate} events.\n\t\t\t *\n\t\t\t * @memberOf module:ui/viewcollection~ViewCollection#delegate\n\t\t\t * @function module:ui/viewcollection~ViewCollection#delegate.to\n\t\t\t * @param {module:utils/emittermixin~EmitterMixin} dest An `EmitterMixin` instance which is the destination for delegated events.\n\t\t\t */\n\t\t\tto: ( dest ) => {\n\t\t\t\t// Activate delegating on existing views in this collection.\n\t\t\t\tfor ( let view of this ) {\n\t\t\t\t\tfor ( let evtName of events ) {\n\t\t\t\t\t\tview.delegate( evtName ).to( dest );\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\t// Activate delegating on future views in this collection.\n\t\t\t\tthis.on( 'add', ( evt, view ) => {\n\t\t\t\t\tfor ( let evtName of events ) {\n\t\t\t\t\t\tview.delegate( evtName ).to( dest );\n\t\t\t\t\t}\n\t\t\t\t} );\n\n\t\t\t\t// Deactivate delegating when view is removed from this collection.\n\t\t\t\tthis.on( 'remove', ( evt, view ) => {\n\t\t\t\t\tfor ( let evtName of events ) {\n\t\t\t\t\t\tview.stopDelegating( evtName, dest );\n\t\t\t\t\t}\n\t\t\t\t} );\n\t\t\t}\n\t\t};\n\t}\n}\n\nmix( Collection, ObservableMixin );\n\n// Check if all entries of the array are of `String` type.\n//\n// @private\n// @param {Array} arr An array to be checked.\n// @returns {Boolean}\nfunction isStringArray( arr ) {\n\treturn arr.every( a => typeof a == 'string' );\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-ui/src/viewcollection.js\n// module id = 118\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module undo/basecommand\n */\n\nimport Command from '@ckeditor/ckeditor5-core/src/command/command';\n\n/**\n * Base class for undo feature commands: {@link module:undo/undocommand~UndoCommand} and {@link module:undo/redocommand~RedoCommand}.\n *\n * @protected\n * @extends module:core/command/command~Command\n */\nexport default class BaseCommand extends Command {\n\tconstructor( editor ) {\n\t\tsuper( editor );\n\n\t\t/**\n\t\t * Stack of items stored by the command. These are pairs of:\n\t\t *\n\t\t * * {@link module:engine/model/batch~Batch batch} saved by the command,\n\t\t * * {@link module:engine/model/selection~Selection selection} state at the moment of saving the batch.\n\t\t *\n\t\t * @protected\n\t\t * @member {Array} #_stack\n\t\t */\n\t\tthis._stack = [];\n\n\t\t/**\n\t\t * Stores all batches that were created by this command.\n\t\t *\n\t\t * @protected\n\t\t * @member {WeakSet.<module:engine/model/batch~Batch>} #_createdBatches\n\t\t */\n\t\tthis._createdBatches = new WeakSet();\n\n\t\t// Refresh state, so command is inactive just after initialization.\n\t\tthis.refreshState();\n\t}\n\n\t/**\n\t * Stores a batch in the command, together with the selection state of the {@link module:engine/model/document~Document document}\n\t * created by the editor which this command is registered to.\n\t *\n\t * @param {module:engine/model/batch~Batch} batch The batch to add.\n\t */\n\taddBatch( batch ) {\n\t\tconst selection = {\n\t\t\tranges: Array.from( this.editor.document.selection.getRanges() ),\n\t\t\tisBackward: this.editor.document.selection.isBackward\n\t\t};\n\n\t\tthis._stack.push( { batch, selection } );\n\t\tthis.refreshState();\n\t}\n\n\t/**\n\t * Removes all items from the stack.\n\t */\n\tclearStack() {\n\t\tthis._stack = [];\n\t\tthis.refreshState();\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\t_checkEnabled() {\n\t\treturn this._stack.length > 0;\n\t}\n\n\t/**\n\t * Restores the {@link module:engine/model/document~Document#selection document selection} state after a batch was undone.\n\t *\n\t * @protected\n\t * @param {Array.<module:engine/model/range~Range>} ranges Ranges to be restored.\n\t * @param {Boolean} isBackward A flag describing whether the restored range was selected forward or backward.\n\t */\n\t_restoreSelection( ranges, isBackward, deltas ) {\n\t\tconst document = this.editor.document;\n\n\t\t// This will keep the transformed selection ranges.\n\t\tconst selectionRanges = [];\n\n\t\t// Transform all ranges from the restored selection.\n\t\tfor ( let range of ranges ) {\n\t\t\tconst transformedRanges = transformSelectionRange( range, deltas );\n\n\t\t\t// For each `range` from `ranges`, we take only one transformed range.\n\t\t\t// This is because we want to prevent situation where single-range selection\n\t\t\t// got transformed to multi-range selection. We will take the first range that\n\t\t\t// is not in the graveyard.\n\t\t\tconst transformedRange = transformedRanges.find(\n\t\t\t\t( range ) => range.start.root != document.graveyard\n\t\t\t);\n\n\t\t\t// `transformedRange` might be `undefined` if transformed range ended up in graveyard.\n\t\t\tif ( transformedRange ) {\n\t\t\t\tselectionRanges.push( transformedRange );\n\t\t\t}\n\t\t}\n\n\t\t// `selectionRanges` may be empty if all ranges ended up in graveyard. If that is the case, do not restore selection.\n\t\tif ( selectionRanges.length ) {\n\t\t\tdocument.selection.setRanges( selectionRanges, isBackward );\n\t\t}\n\t}\n}\n\n// Transforms given range `range` by deltas from `document` history, starting from a delta with given `baseVersion`.\n// Returns an array containing one or more ranges, which are result of the transformation.\nfunction transformSelectionRange( range, deltas ) {\n\t// The range will be transformed by history deltas that happened after the selection got stored.\n\t// Note, that at this point, the document history is already updated by undo command execution. We will\n\t// not transform the range by deltas that got undone or their reversing counterparts.\n\tlet transformed = transformRangesByDeltas( [ range ], deltas );\n\n\t// After `range` got transformed, we have an array of ranges. Some of those\n\t// ranges may be \"touching\" -- they can be next to each other and could be merged.\n\t// First, we have to sort those ranges because they don't have to be in an order.\n\ttransformed.sort( ( a, b ) => a.start.isBefore( b.start ) ? -1 : 1 );\n\n\t// Then, we check if two consecutive ranges are touching.\n\tfor ( let i = 1 ; i < transformed.length; i++ ) {\n\t\tlet a = transformed[ i - 1 ];\n\t\tlet b = transformed[ i ];\n\n\t\tif ( a.end.isTouching( b.start ) ) {\n\t\t\ta.end = b.end;\n\t\t\ttransformed.splice( i, 1 );\n\t\t\ti--;\n\t\t}\n\t}\n\n\treturn transformed;\n}\n\n// Transforms given set of `ranges` by given set of `deltas`. Returns transformed `ranges`.\nexport function transformRangesByDeltas( ranges, deltas ) {\n\tfor ( let delta of deltas ) {\n\t\tfor ( let operation of delta.operations ) {\n\t\t\t// We look through all operations from all deltas.\n\n\t\t\tfor ( let i = 0; i < ranges.length; i++ ) {\n\t\t\t\t// We transform every range by every operation.\n\t\t\t\tlet result;\n\n\t\t\t\tswitch ( operation.type ) {\n\t\t\t\t\tcase 'insert':\n\t\t\t\t\t\tresult = ranges[ i ]._getTransformedByInsertion(\n\t\t\t\t\t\t\toperation.position,\n\t\t\t\t\t\t\toperation.nodes.maxOffset,\n\t\t\t\t\t\t\ttrue\n\t\t\t\t\t\t);\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'move':\n\t\t\t\t\tcase 'remove':\n\t\t\t\t\tcase 'reinsert':\n\t\t\t\t\t\tresult = ranges[ i ]._getTransformedByMove(\n\t\t\t\t\t\t\toperation.sourcePosition,\n\t\t\t\t\t\t\toperation.targetPosition,\n\t\t\t\t\t\t\toperation.howMany,\n\t\t\t\t\t\t\ttrue\n\t\t\t\t\t\t);\n\t\t\t\t\t\tbreak;\n\t\t\t\t}\n\n\t\t\t\t// If we have a transformation result, we substitute transformed range with it in `transformed` array.\n\t\t\t\t// Keep in mind that the result is an array and may contain multiple ranges.\n\t\t\t\tif ( result ) {\n\t\t\t\t\tranges.splice( i, 1, ...result );\n\n\t\t\t\t\t// Fix iterator.\n\t\t\t\t\ti = i + result.length - 1;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\treturn ranges;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-undo/src/basecommand.js\n// module id = 119\n// module chunks = 0","import mapCacheClear from './_mapCacheClear';\nimport mapCacheDelete from './_mapCacheDelete';\nimport mapCacheGet from './_mapCacheGet';\nimport mapCacheHas from './_mapCacheHas';\nimport mapCacheSet from './_mapCacheSet';\n\n/**\n * Creates a map cache object to store key-value pairs.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\nfunction MapCache(entries) {\n  var index = -1,\n      length = entries ? entries.length : 0;\n\n  this.clear();\n  while (++index < length) {\n    var entry = entries[index];\n    this.set(entry[0], entry[1]);\n  }\n}\n\n// Add methods to `MapCache`.\nMapCache.prototype.clear = mapCacheClear;\nMapCache.prototype['delete'] = mapCacheDelete;\nMapCache.prototype.get = mapCacheGet;\nMapCache.prototype.has = mapCacheHas;\nMapCache.prototype.set = mapCacheSet;\n\nexport default MapCache;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_MapCache.js\n// module id = 120\n// module chunks = 0","import ListCache from './_ListCache';\nimport stackClear from './_stackClear';\nimport stackDelete from './_stackDelete';\nimport stackGet from './_stackGet';\nimport stackHas from './_stackHas';\nimport stackSet from './_stackSet';\n\n/**\n * Creates a stack cache object to store key-value pairs.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\nfunction Stack(entries) {\n  this.__data__ = new ListCache(entries);\n}\n\n// Add methods to `Stack`.\nStack.prototype.clear = stackClear;\nStack.prototype['delete'] = stackDelete;\nStack.prototype.get = stackGet;\nStack.prototype.has = stackHas;\nStack.prototype.set = stackSet;\n\nexport default Stack;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_Stack.js\n// module id = 121\n// module chunks = 0","import root from './_root';\n\n/** Built-in value references. */\nvar Symbol = root.Symbol;\n\nexport default Symbol;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_Symbol.js\n// module id = 122\n// module chunks = 0","import baseIndexOf from './_baseIndexOf';\n\n/**\n * A specialized version of `_.includes` for arrays without support for\n * specifying an index to search from.\n *\n * @private\n * @param {Array} array The array to search.\n * @param {*} target The value to search for.\n * @returns {boolean} Returns `true` if `target` is found, else `false`.\n */\nfunction arrayIncludes(array, value) {\n  return !!array.length && baseIndexOf(array, value, 0) > -1;\n}\n\nexport default arrayIncludes;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_arrayIncludes.js\n// module id = 123\n// module chunks = 0","/**\n * This function is like `arrayIncludes` except that it accepts a comparator.\n *\n * @private\n * @param {Array} array The array to search.\n * @param {*} target The value to search for.\n * @param {Function} comparator The comparator invoked per element.\n * @returns {boolean} Returns `true` if `target` is found, else `false`.\n */\nfunction arrayIncludesWith(array, value, comparator) {\n  var index = -1,\n      length = array.length;\n\n  while (++index < length) {\n    if (comparator(value, array[index])) {\n      return true;\n    }\n  }\n  return false;\n}\n\nexport default arrayIncludesWith;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_arrayIncludesWith.js\n// module id = 124\n// module chunks = 0","import castPath from './_castPath';\nimport isKey from './_isKey';\nimport toKey from './_toKey';\n\n/**\n * The base implementation of `_.get` without support for default values.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array|string} path The path of the property to get.\n * @returns {*} Returns the resolved value.\n */\nfunction baseGet(object, path) {\n  path = isKey(path, object) ? [path] : castPath(path);\n\n  var index = 0,\n      length = path.length;\n\n  while (object != null && index < length) {\n    object = object[toKey(path[index++])];\n  }\n  return (index && index == length) ? object : undefined;\n}\n\nexport default baseGet;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_baseGet.js\n// module id = 125\n// module chunks = 0","import indexOfNaN from './_indexOfNaN';\n\n/**\n * The base implementation of `_.indexOf` without `fromIndex` bounds checks.\n *\n * @private\n * @param {Array} array The array to search.\n * @param {*} value The value to search for.\n * @param {number} fromIndex The index to search from.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\nfunction baseIndexOf(array, value, fromIndex) {\n  if (value !== value) {\n    return indexOfNaN(array, fromIndex);\n  }\n  var index = fromIndex - 1,\n      length = array.length;\n\n  while (++index < length) {\n    if (array[index] === value) {\n      return index;\n    }\n  }\n  return -1;\n}\n\nexport default baseIndexOf;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_baseIndexOf.js\n// module id = 126\n// module chunks = 0","import SetCache from './_SetCache';\nimport arrayIncludes from './_arrayIncludes';\nimport arrayIncludesWith from './_arrayIncludesWith';\nimport arrayMap from './_arrayMap';\nimport baseUnary from './_baseUnary';\nimport cacheHas from './_cacheHas';\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeMin = Math.min;\n\n/**\n * The base implementation of methods like `_.intersection`, without support\n * for iteratee shorthands, that accepts an array of arrays to inspect.\n *\n * @private\n * @param {Array} arrays The arrays to inspect.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of shared values.\n */\nfunction baseIntersection(arrays, iteratee, comparator) {\n  var includes = comparator ? arrayIncludesWith : arrayIncludes,\n      length = arrays[0].length,\n      othLength = arrays.length,\n      othIndex = othLength,\n      caches = Array(othLength),\n      maxLength = Infinity,\n      result = [];\n\n  while (othIndex--) {\n    var array = arrays[othIndex];\n    if (othIndex && iteratee) {\n      array = arrayMap(array, baseUnary(iteratee));\n    }\n    maxLength = nativeMin(array.length, maxLength);\n    caches[othIndex] = !comparator && (iteratee || (length >= 120 && array.length >= 120))\n      ? new SetCache(othIndex && array)\n      : undefined;\n  }\n  array = arrays[0];\n\n  var index = -1,\n      seen = caches[0];\n\n  outer:\n  while (++index < length && result.length < maxLength) {\n    var value = array[index],\n        computed = iteratee ? iteratee(value) : value;\n\n    value = (comparator || value !== 0) ? value : 0;\n    if (!(seen\n          ? cacheHas(seen, computed)\n          : includes(result, computed, comparator)\n        )) {\n      othIndex = othLength;\n      while (--othIndex) {\n        var cache = caches[othIndex];\n        if (!(cache\n              ? cacheHas(cache, computed)\n              : includes(arrays[othIndex], computed, comparator))\n            ) {\n          continue outer;\n        }\n      }\n      if (seen) {\n        seen.push(computed);\n      }\n      result.push(value);\n    }\n  }\n  return result;\n}\n\nexport default baseIntersection;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_baseIntersection.js\n// module id = 127\n// module chunks = 0","import baseIsEqualDeep from './_baseIsEqualDeep';\nimport isObject from './isObject';\nimport isObjectLike from './isObjectLike';\n\n/**\n * The base implementation of `_.isEqual` which supports partial comparisons\n * and tracks traversed objects.\n *\n * @private\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @param {Function} [customizer] The function to customize comparisons.\n * @param {boolean} [bitmask] The bitmask of comparison flags.\n *  The bitmask may be composed of the following flags:\n *     1 - Unordered comparison\n *     2 - Partial comparison\n * @param {Object} [stack] Tracks traversed `value` and `other` objects.\n * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n */\nfunction baseIsEqual(value, other, customizer, bitmask, stack) {\n  if (value === other) {\n    return true;\n  }\n  if (value == null || other == null || (!isObject(value) && !isObjectLike(other))) {\n    return value !== value && other !== other;\n  }\n  return baseIsEqualDeep(value, other, baseIsEqual, customizer, bitmask, stack);\n}\n\nexport default baseIsEqual;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_baseIsEqual.js\n// module id = 128\n// module chunks = 0","/**\n * The base implementation of `_.property` without support for deep paths.\n *\n * @private\n * @param {string} key The key of the property to get.\n * @returns {Function} Returns the new accessor function.\n */\nfunction baseProperty(key) {\n  return function(object) {\n    return object == null ? undefined : object[key];\n  };\n}\n\nexport default baseProperty;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_baseProperty.js\n// module id = 129\n// module chunks = 0","import arrayMap from './_arrayMap';\nimport baseIndexOf from './_baseIndexOf';\nimport baseIndexOfWith from './_baseIndexOfWith';\nimport baseUnary from './_baseUnary';\n\n/** Used for built-in method references. */\nvar arrayProto = Array.prototype;\n\n/** Built-in value references. */\nvar splice = arrayProto.splice;\n\n/**\n * The base implementation of `_.pullAllBy` without support for iteratee\n * shorthands.\n *\n * @private\n * @param {Array} array The array to modify.\n * @param {Array} values The values to remove.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns `array`.\n */\nfunction basePullAll(array, values, iteratee, comparator) {\n  var indexOf = comparator ? baseIndexOfWith : baseIndexOf,\n      index = -1,\n      length = values.length,\n      seen = array;\n\n  if (iteratee) {\n    seen = arrayMap(array, baseUnary(iteratee));\n  }\n  while (++index < length) {\n    var fromIndex = 0,\n        value = values[index],\n        computed = iteratee ? iteratee(value) : value;\n\n    while ((fromIndex = indexOf(seen, computed, fromIndex, comparator)) > -1) {\n      if (seen !== array) {\n        splice.call(seen, fromIndex, 1);\n      }\n      splice.call(array, fromIndex, 1);\n    }\n  }\n  return array;\n}\n\nexport default basePullAll;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_basePullAll.js\n// module id = 130\n// module chunks = 0","import isSymbol from './isSymbol';\n\n/** Used as references for the maximum length and index of an array. */\nvar MAX_ARRAY_LENGTH = 4294967295,\n    MAX_ARRAY_INDEX = MAX_ARRAY_LENGTH - 1;\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeFloor = Math.floor,\n    nativeMin = Math.min;\n\n/**\n * The base implementation of `_.sortedIndexBy` and `_.sortedLastIndexBy`\n * which invokes `iteratee` for `value` and each element of `array` to compute\n * their sort ranking. The iteratee is invoked with one argument; (value).\n *\n * @private\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @param {Function} iteratee The iteratee invoked per element.\n * @param {boolean} [retHighest] Specify returning the highest qualified index.\n * @returns {number} Returns the index at which `value` should be inserted\n *  into `array`.\n */\nfunction baseSortedIndexBy(array, value, iteratee, retHighest) {\n  value = iteratee(value);\n\n  var low = 0,\n      high = array ? array.length : 0,\n      valIsNaN = value !== value,\n      valIsNull = value === null,\n      valIsSymbol = isSymbol(value),\n      valIsUndefined = value === undefined;\n\n  while (low < high) {\n    var mid = nativeFloor((low + high) / 2),\n        computed = iteratee(array[mid]),\n        othIsDefined = computed !== undefined,\n        othIsNull = computed === null,\n        othIsReflexive = computed === computed,\n        othIsSymbol = isSymbol(computed);\n\n    if (valIsNaN) {\n      var setLow = retHighest || othIsReflexive;\n    } else if (valIsUndefined) {\n      setLow = othIsReflexive && (retHighest || othIsDefined);\n    } else if (valIsNull) {\n      setLow = othIsReflexive && othIsDefined && (retHighest || !othIsNull);\n    } else if (valIsSymbol) {\n      setLow = othIsReflexive && othIsDefined && !othIsNull && (retHighest || !othIsSymbol);\n    } else if (othIsNull || othIsSymbol) {\n      setLow = false;\n    } else {\n      setLow = retHighest ? (computed <= value) : (computed < value);\n    }\n    if (setLow) {\n      low = mid + 1;\n    } else {\n      high = mid;\n    }\n  }\n  return nativeMin(high, MAX_ARRAY_INDEX);\n}\n\nexport default baseSortedIndexBy;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_baseSortedIndexBy.js\n// module id = 131\n// module chunks = 0","/**\n * The base implementation of `_.unary` without support for storing wrapper metadata.\n *\n * @private\n * @param {Function} func The function to cap arguments for.\n * @returns {Function} Returns the new capped function.\n */\nfunction baseUnary(func) {\n  return function(value) {\n    return func(value);\n  };\n}\n\nexport default baseUnary;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_baseUnary.js\n// module id = 132\n// module chunks = 0","import arrayPush from './_arrayPush';\nimport baseDifference from './_baseDifference';\nimport baseUniq from './_baseUniq';\n\n/**\n * The base implementation of methods like `_.xor`, without support for\n * iteratee shorthands, that accepts an array of arrays to inspect.\n *\n * @private\n * @param {Array} arrays The arrays to inspect.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of values.\n */\nfunction baseXor(arrays, iteratee, comparator) {\n  var index = -1,\n      length = arrays.length;\n\n  while (++index < length) {\n    var result = result\n      ? arrayPush(\n          baseDifference(result, arrays[index], iteratee, comparator),\n          baseDifference(arrays[index], result, iteratee, comparator)\n        )\n      : arrays[index];\n  }\n  return (result && result.length) ? baseUniq(result, iteratee, comparator) : [];\n}\n\nexport default baseXor;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_baseXor.js\n// module id = 133\n// module chunks = 0","/**\n * Checks if a cache value for `key` exists.\n *\n * @private\n * @param {Object} cache The cache to query.\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\nfunction cacheHas(cache, key) {\n  return cache.has(key);\n}\n\nexport default cacheHas;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_cacheHas.js\n// module id = 134\n// module chunks = 0","import isArrayLikeObject from './isArrayLikeObject';\n\n/**\n * Casts `value` to an empty array if it's not an array like object.\n *\n * @private\n * @param {*} value The value to inspect.\n * @returns {Array|Object} Returns the cast array-like object.\n */\nfunction castArrayLikeObject(value) {\n  return isArrayLikeObject(value) ? value : [];\n}\n\nexport default castArrayLikeObject;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_castArrayLikeObject.js\n// module id = 135\n// module chunks = 0","import Uint8Array from './_Uint8Array';\n\n/**\n * Creates a clone of `arrayBuffer`.\n *\n * @private\n * @param {ArrayBuffer} arrayBuffer The array buffer to clone.\n * @returns {ArrayBuffer} Returns the cloned array buffer.\n */\nfunction cloneArrayBuffer(arrayBuffer) {\n  var result = new arrayBuffer.constructor(arrayBuffer.byteLength);\n  new Uint8Array(result).set(new Uint8Array(arrayBuffer));\n  return result;\n}\n\nexport default cloneArrayBuffer;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_cloneArrayBuffer.js\n// module id = 136\n// module chunks = 0","import assignValue from './_assignValue';\n\n/**\n * Copies properties of `source` to `object`.\n *\n * @private\n * @param {Object} source The object to copy properties from.\n * @param {Array} props The property identifiers to copy.\n * @param {Object} [object={}] The object to copy properties to.\n * @param {Function} [customizer] The function to customize copied values.\n * @returns {Object} Returns `object`.\n */\nfunction copyObject(source, props, object, customizer) {\n  object || (object = {});\n\n  var index = -1,\n      length = props.length;\n\n  while (++index < length) {\n    var key = props[index];\n\n    var newValue = customizer\n      ? customizer(object[key], source[key], key, object, source)\n      : source[key];\n\n    assignValue(object, key, newValue);\n  }\n  return object;\n}\n\nexport default copyObject;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_copyObject.js\n// module id = 137\n// module chunks = 0","/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeGetPrototype = Object.getPrototypeOf;\n\n/**\n * Gets the `[[Prototype]]` of `value`.\n *\n * @private\n * @param {*} value The value to query.\n * @returns {null|Object} Returns the `[[Prototype]]`.\n */\nfunction getPrototype(value) {\n  return nativeGetPrototype(Object(value));\n}\n\nexport default getPrototype;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_getPrototype.js\n// module id = 138\n// module chunks = 0","import DataView from './_DataView';\nimport Map from './_Map';\nimport Promise from './_Promise';\nimport Set from './_Set';\nimport WeakMap from './_WeakMap';\nimport toSource from './_toSource';\n\n/** `Object#toString` result references. */\nvar mapTag = '[object Map]',\n    objectTag = '[object Object]',\n    promiseTag = '[object Promise]',\n    setTag = '[object Set]',\n    weakMapTag = '[object WeakMap]';\n\nvar dataViewTag = '[object DataView]';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/**\n * Used to resolve the\n * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)\n * of values.\n */\nvar objectToString = objectProto.toString;\n\n/** Used to detect maps, sets, and weakmaps. */\nvar dataViewCtorString = toSource(DataView),\n    mapCtorString = toSource(Map),\n    promiseCtorString = toSource(Promise),\n    setCtorString = toSource(Set),\n    weakMapCtorString = toSource(WeakMap);\n\n/**\n * Gets the `toStringTag` of `value`.\n *\n * @private\n * @param {*} value The value to query.\n * @returns {string} Returns the `toStringTag`.\n */\nfunction getTag(value) {\n  return objectToString.call(value);\n}\n\n// Fallback for data views, maps, sets, and weak maps in IE 11,\n// for data views in Edge, and promises in Node.js.\nif ((DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag) ||\n    (Map && getTag(new Map) != mapTag) ||\n    (Promise && getTag(Promise.resolve()) != promiseTag) ||\n    (Set && getTag(new Set) != setTag) ||\n    (WeakMap && getTag(new WeakMap) != weakMapTag)) {\n  getTag = function(value) {\n    var result = objectToString.call(value),\n        Ctor = result == objectTag ? value.constructor : undefined,\n        ctorString = Ctor ? toSource(Ctor) : undefined;\n\n    if (ctorString) {\n      switch (ctorString) {\n        case dataViewCtorString: return dataViewTag;\n        case mapCtorString: return mapTag;\n        case promiseCtorString: return promiseTag;\n        case setCtorString: return setTag;\n        case weakMapCtorString: return weakMapTag;\n      }\n    }\n    return result;\n  };\n}\n\nexport default getTag;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_getTag.js\n// module id = 139\n// module chunks = 0","/**\n * Converts `map` to its key-value pairs.\n *\n * @private\n * @param {Object} map The map to convert.\n * @returns {Array} Returns the key-value pairs.\n */\nfunction mapToArray(map) {\n  var index = -1,\n      result = Array(map.size);\n\n  map.forEach(function(value, key) {\n    result[++index] = [key, value];\n  });\n  return result;\n}\n\nexport default mapToArray;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_mapToArray.js\n// module id = 140\n// module chunks = 0","import isObject from './isObject';\nimport now from './now';\nimport toNumber from './toNumber';\n\n/** Used as the `TypeError` message for \"Functions\" methods. */\nvar FUNC_ERROR_TEXT = 'Expected a function';\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeMax = Math.max,\n    nativeMin = Math.min;\n\n/**\n * Creates a debounced function that delays invoking `func` until after `wait`\n * milliseconds have elapsed since the last time the debounced function was\n * invoked. The debounced function comes with a `cancel` method to cancel\n * delayed `func` invocations and a `flush` method to immediately invoke them.\n * Provide an options object to indicate whether `func` should be invoked on\n * the leading and/or trailing edge of the `wait` timeout. The `func` is invoked\n * with the last arguments provided to the debounced function. Subsequent calls\n * to the debounced function return the result of the last `func` invocation.\n *\n * **Note:** If `leading` and `trailing` options are `true`, `func` is invoked\n * on the trailing edge of the timeout only if the debounced function is\n * invoked more than once during the `wait` timeout.\n *\n * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)\n * for details over the differences between `_.debounce` and `_.throttle`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to debounce.\n * @param {number} [wait=0] The number of milliseconds to delay.\n * @param {Object} [options={}] The options object.\n * @param {boolean} [options.leading=false]\n *  Specify invoking on the leading edge of the timeout.\n * @param {number} [options.maxWait]\n *  The maximum time `func` is allowed to be delayed before it's invoked.\n * @param {boolean} [options.trailing=true]\n *  Specify invoking on the trailing edge of the timeout.\n * @returns {Function} Returns the new debounced function.\n * @example\n *\n * // Avoid costly calculations while the window size is in flux.\n * jQuery(window).on('resize', _.debounce(calculateLayout, 150));\n *\n * // Invoke `sendMail` when clicked, debouncing subsequent calls.\n * jQuery(element).on('click', _.debounce(sendMail, 300, {\n *   'leading': true,\n *   'trailing': false\n * }));\n *\n * // Ensure `batchLog` is invoked once after 1 second of debounced calls.\n * var debounced = _.debounce(batchLog, 250, { 'maxWait': 1000 });\n * var source = new EventSource('/stream');\n * jQuery(source).on('message', debounced);\n *\n * // Cancel the trailing debounced invocation.\n * jQuery(window).on('popstate', debounced.cancel);\n */\nfunction debounce(func, wait, options) {\n  var lastArgs,\n      lastThis,\n      maxWait,\n      result,\n      timerId,\n      lastCallTime = 0,\n      lastInvokeTime = 0,\n      leading = false,\n      maxing = false,\n      trailing = true;\n\n  if (typeof func != 'function') {\n    throw new TypeError(FUNC_ERROR_TEXT);\n  }\n  wait = toNumber(wait) || 0;\n  if (isObject(options)) {\n    leading = !!options.leading;\n    maxing = 'maxWait' in options;\n    maxWait = maxing ? nativeMax(toNumber(options.maxWait) || 0, wait) : maxWait;\n    trailing = 'trailing' in options ? !!options.trailing : trailing;\n  }\n\n  function invokeFunc(time) {\n    var args = lastArgs,\n        thisArg = lastThis;\n\n    lastArgs = lastThis = undefined;\n    lastInvokeTime = time;\n    result = func.apply(thisArg, args);\n    return result;\n  }\n\n  function leadingEdge(time) {\n    // Reset any `maxWait` timer.\n    lastInvokeTime = time;\n    // Start the timer for the trailing edge.\n    timerId = setTimeout(timerExpired, wait);\n    // Invoke the leading edge.\n    return leading ? invokeFunc(time) : result;\n  }\n\n  function remainingWait(time) {\n    var timeSinceLastCall = time - lastCallTime,\n        timeSinceLastInvoke = time - lastInvokeTime,\n        result = wait - timeSinceLastCall;\n\n    return maxing ? nativeMin(result, maxWait - timeSinceLastInvoke) : result;\n  }\n\n  function shouldInvoke(time) {\n    var timeSinceLastCall = time - lastCallTime,\n        timeSinceLastInvoke = time - lastInvokeTime;\n\n    // Either this is the first call, activity has stopped and we're at the\n    // trailing edge, the system time has gone backwards and we're treating\n    // it as the trailing edge, or we've hit the `maxWait` limit.\n    return (!lastCallTime || (timeSinceLastCall >= wait) ||\n      (timeSinceLastCall < 0) || (maxing && timeSinceLastInvoke >= maxWait));\n  }\n\n  function timerExpired() {\n    var time = now();\n    if (shouldInvoke(time)) {\n      return trailingEdge(time);\n    }\n    // Restart the timer.\n    timerId = setTimeout(timerExpired, remainingWait(time));\n  }\n\n  function trailingEdge(time) {\n    clearTimeout(timerId);\n    timerId = undefined;\n\n    // Only invoke if we have `lastArgs` which means `func` has been\n    // debounced at least once.\n    if (trailing && lastArgs) {\n      return invokeFunc(time);\n    }\n    lastArgs = lastThis = undefined;\n    return result;\n  }\n\n  function cancel() {\n    if (timerId !== undefined) {\n      clearTimeout(timerId);\n    }\n    lastCallTime = lastInvokeTime = 0;\n    lastArgs = lastThis = timerId = undefined;\n  }\n\n  function flush() {\n    return timerId === undefined ? result : trailingEdge(now());\n  }\n\n  function debounced() {\n    var time = now(),\n        isInvoking = shouldInvoke(time);\n\n    lastArgs = arguments;\n    lastThis = this;\n    lastCallTime = time;\n\n    if (isInvoking) {\n      if (timerId === undefined) {\n        return leadingEdge(lastCallTime);\n      }\n      if (maxing) {\n        // Handle invocations in a tight loop.\n        clearTimeout(timerId);\n        timerId = setTimeout(timerExpired, wait);\n        return invokeFunc(lastCallTime);\n      }\n    }\n    if (timerId === undefined) {\n      timerId = setTimeout(timerExpired, wait);\n    }\n    return result;\n  }\n  debounced.cancel = cancel;\n  debounced.flush = flush;\n  return debounced;\n}\n\nexport default debounce;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/debounce.js\n// module id = 141\n// module chunks = 0","import baseSlice from './_baseSlice';\nimport toInteger from './toInteger';\n\n/**\n * Creates a slice of `array` with `n` elements dropped from the beginning.\n *\n * @static\n * @memberOf _\n * @since 0.5.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {number} [n=1] The number of elements to drop.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.drop([1, 2, 3]);\n * // => [2, 3]\n *\n * _.drop([1, 2, 3], 2);\n * // => [3]\n *\n * _.drop([1, 2, 3], 5);\n * // => []\n *\n * _.drop([1, 2, 3], 0);\n * // => [1, 2, 3]\n */\nfunction drop(array, n, guard) {\n  var length = array ? array.length : 0;\n  if (!length) {\n    return [];\n  }\n  n = (guard || n === undefined) ? 1 : toInteger(n);\n  return baseSlice(array, n < 0 ? 0 : n, length);\n}\n\nexport default drop;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/drop.js\n// module id = 142\n// module chunks = 0","import baseSlice from './_baseSlice';\nimport toInteger from './toInteger';\n\n/**\n * Creates a slice of `array` with `n` elements dropped from the end.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {number} [n=1] The number of elements to drop.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.dropRight([1, 2, 3]);\n * // => [1, 2]\n *\n * _.dropRight([1, 2, 3], 2);\n * // => [1]\n *\n * _.dropRight([1, 2, 3], 5);\n * // => []\n *\n * _.dropRight([1, 2, 3], 0);\n * // => [1, 2, 3]\n */\nfunction dropRight(array, n, guard) {\n  var length = array ? array.length : 0;\n  if (!length) {\n    return [];\n  }\n  n = (guard || n === undefined) ? 1 : toInteger(n);\n  n = length - n;\n  return baseSlice(array, 0, n < 0 ? 0 : n);\n}\n\nexport default dropRight;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/dropRight.js\n// module id = 143\n// module chunks = 0","/**\n * Gets the first element of `array`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @alias first\n * @category Array\n * @param {Array} array The array to query.\n * @returns {*} Returns the first element of `array`.\n * @example\n *\n * _.head([1, 2, 3]);\n * // => 1\n *\n * _.head([]);\n * // => undefined\n */\nfunction head(array) {\n  return (array && array.length) ? array[0] : undefined;\n}\n\nexport default head;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/head.js\n// module id = 144\n// module chunks = 0","import isArrayLikeObject from './isArrayLikeObject';\n\n/** `Object#toString` result references. */\nvar argsTag = '[object Arguments]';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/**\n * Used to resolve the\n * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)\n * of values.\n */\nvar objectToString = objectProto.toString;\n\n/** Built-in value references. */\nvar propertyIsEnumerable = objectProto.propertyIsEnumerable;\n\n/**\n * Checks if `value` is likely an `arguments` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is correctly classified,\n *  else `false`.\n * @example\n *\n * _.isArguments(function() { return arguments; }());\n * // => true\n *\n * _.isArguments([1, 2, 3]);\n * // => false\n */\nfunction isArguments(value) {\n  // Safari 8.1 incorrectly makes `arguments.callee` enumerable in strict mode.\n  return isArrayLikeObject(value) && hasOwnProperty.call(value, 'callee') &&\n    (!propertyIsEnumerable.call(value, 'callee') || objectToString.call(value) == argsTag);\n}\n\nexport default isArguments;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/isArguments.js\n// module id = 145\n// module chunks = 0","import isObject from './isObject';\n\n/** `Object#toString` result references. */\nvar funcTag = '[object Function]',\n    genTag = '[object GeneratorFunction]';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/**\n * Used to resolve the\n * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)\n * of values.\n */\nvar objectToString = objectProto.toString;\n\n/**\n * Checks if `value` is classified as a `Function` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is correctly classified,\n *  else `false`.\n * @example\n *\n * _.isFunction(_);\n * // => true\n *\n * _.isFunction(/abc/);\n * // => false\n */\nfunction isFunction(value) {\n  // The use of `Object#toString` avoids issues with the `typeof` operator\n  // in Safari 8 which returns 'object' for typed array and weak map constructors,\n  // and PhantomJS 1.9 which returns 'function' for `NodeList` instances.\n  var tag = isObject(value) ? objectToString.call(value) : '';\n  return tag == funcTag || tag == genTag;\n}\n\nexport default isFunction;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/isFunction.js\n// module id = 146\n// module chunks = 0","import isArray from './isArray';\nimport isObjectLike from './isObjectLike';\n\n/** `Object#toString` result references. */\nvar stringTag = '[object String]';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/**\n * Used to resolve the\n * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)\n * of values.\n */\nvar objectToString = objectProto.toString;\n\n/**\n * Checks if `value` is classified as a `String` primitive or object.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is correctly classified,\n *  else `false`.\n * @example\n *\n * _.isString('abc');\n * // => true\n *\n * _.isString(1);\n * // => false\n */\nfunction isString(value) {\n  return typeof value == 'string' ||\n    (!isArray(value) && isObjectLike(value) && objectToString.call(value) == stringTag);\n}\n\nexport default isString;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/isString.js\n// module id = 147\n// module chunks = 0","import basePullAll from './_basePullAll';\n\n/**\n * This method is like `_.pull` except that it accepts an array of values to remove.\n *\n * **Note:** Unlike `_.difference`, this method mutates `array`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {Array} values The values to remove.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = [1, 2, 3, 1, 2, 3];\n *\n * _.pullAll(array, [2, 3]);\n * console.log(array);\n * // => [1, 1]\n */\nfunction pullAll(array, values) {\n  return (array && array.length && values && values.length)\n    ? basePullAll(array, values)\n    : array;\n}\n\nexport default pullAll;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/pullAll.js\n// module id = 148\n// module chunks = 0","import apply from './_apply';\nimport arrayMap from './_arrayMap';\nimport unzip from './unzip';\n\n/**\n * This method is like `_.unzip` except that it accepts `iteratee` to specify\n * how regrouped values should be combined. The iteratee is invoked with the\n * elements of each group: (...group).\n *\n * @static\n * @memberOf _\n * @since 3.8.0\n * @category Array\n * @param {Array} array The array of grouped elements to process.\n * @param {Function} [iteratee=_.identity] The function to combine\n *  regrouped values.\n * @returns {Array} Returns the new array of regrouped elements.\n * @example\n *\n * var zipped = _.zip([1, 2], [10, 20], [100, 200]);\n * // => [[1, 10, 100], [2, 20, 200]]\n *\n * _.unzipWith(zipped, _.add);\n * // => [3, 30, 300]\n */\nfunction unzipWith(array, iteratee) {\n  if (!(array && array.length)) {\n    return [];\n  }\n  var result = unzip(array);\n  if (iteratee == null) {\n    return result;\n  }\n  return arrayMap(result, function(group) {\n    return apply(iteratee, undefined, group);\n  });\n}\n\nexport default unzipWith;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/unzipWith.js\n// module id = 149\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/tomap\n */\n\nimport isPlainObject from './lib/lodash/isPlainObject';\nimport objectToMap from './objecttomap';\n\n/**\n * Transforms object or iterable to map. Iterable needs to be in the format acceptable by the `Map` constructor.\n *\n *\t\tmap = toMap( { 'foo': 1, 'bar': 2 } );\n *\t\tmap = toMap( [ [ 'foo', 1 ], [ 'bar', 2 ] ] );\n *\t\tmap = toMap( anotherMap );\n *\n * @param {Object|Iterable} data Object or iterable to transform.\n * @returns {Map} Map created from data.\n */\nexport default function toMap( data ) {\n\tif ( isPlainObject( data ) ) {\n\t\treturn objectToMap( data );\n\t} else {\n\t\treturn new Map( data );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/tomap.js\n// module id = 150\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module widget/utils\n */\n\nconst widgetSymbol = Symbol( 'isWidget' );\nconst labelSymbol = Symbol( 'label' );\n\n/**\n * CSS class added to each widget element.\n *\n * @const {String}\n */\nexport const WIDGET_CLASS_NAME = 'ck-widget';\n\n/**\n * CSS class added to currently selected widget element.\n *\n * @const {String}\n */\nexport const WIDGET_SELECTED_CLASS_NAME = 'ck-widget_selected';\n\n/**\n * Returns `true` if given {@link module:engine/view/element~Element} is a widget.\n *\n * @param {module:engine/view/element~Element} element\n * @returns {Boolean}\n */\nexport function isWidget( element ) {\n\treturn !!element.getCustomProperty( widgetSymbol );\n}\n\n/**\n * Converts given {@link module:engine/view/element~Element} to widget in following way:\n * * sets `contenteditable` attribute to `true`,\n * * adds custom `getFillerOffset` method returning `null`,\n * * adds `ck-widget` CSS class,\n * * adds custom property allowing to recognize widget elements by using {@link ~isWidget}.\n *\n * @param {module:engine/view/element~Element} element\n * @param {Object} [options]\n * @param {String|Function} [options.label] Element's label provided to {@link ~setLabel} function. It can be passed as\n * a plain string or a function returning a string.\n * @returns {module:engine/view/element~Element} Returns same element.\n */\nexport function toWidget( element, options ) {\n\toptions = options || {};\n\telement.setAttribute( 'contenteditable', false );\n\telement.getFillerOffset = getFillerOffset;\n\telement.addClass( WIDGET_CLASS_NAME );\n\telement.setCustomProperty( widgetSymbol, true );\n\n\tif ( options.label ) {\n\t\tsetLabel( element, options.label );\n\t}\n\n\treturn element;\n}\n\n/**\n * Sets label for given element.\n * It can be passed as a plain string or a function returning a string. Function will be called each time label is retrieved by\n * {@link ~getLabel}.\n *\n * @param {module:engine/view/element~Element} element\n * @param {String|Function} labelOrCreator\n */\nexport function setLabel( element, labelOrCreator ) {\n\telement.setCustomProperty( labelSymbol, labelOrCreator );\n}\n\n/**\n * Returns label for provided element.\n *\n * @param {module:engine/view/element~Element} element\n * @return {String}\n */\nexport function getLabel( element ) {\n\tconst labelCreator = element.getCustomProperty( labelSymbol );\n\n\tif ( !labelCreator ) {\n\t\treturn '';\n\t}\n\n\treturn typeof labelCreator == 'function' ? labelCreator() : labelCreator;\n}\n\n/**\n * Adds functionality to provided {module:engine/view/editableelement~EditableElement} to act as a widget's editable:\n * * sets `contenteditable` attribute to `true`,\n * * adds `ck-editable` CSS class,\n * * adds `ck-editable_focused` CSS class when editable is focused and removes it when it's blurred.\n *\n * @param {module:engine/view/editableelement~EditableElement} editable\n * @returns {module:engine/view/editableelement~EditableElement} Returns same element that was provided in `editable` param.\n */\nexport function toWidgetEditable( editable ) {\n\teditable.setAttribute( 'contenteditable', 'true' );\n\teditable.addClass( 'ck-editable' );\n\n\teditable.on( 'change:isFocused', ( evt, property, is ) => {\n\t\tif ( is ) {\n\t\t\teditable.addClass( 'ck-editable_focused' );\n\t\t} else {\n\t\t\teditable.removeClass( 'ck-editable_focused' );\n\t\t}\n\t} );\n\n\treturn editable;\n}\n\n// Default filler offset function applied to all widget elements.\n//\n// @returns {null}\nfunction getFillerOffset() {\n\treturn null;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-widget/src/utils.js\n// module id = 151\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module basic-styles/boldengine\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport buildModelConverter from '@ckeditor/ckeditor5-engine/src/conversion/buildmodelconverter';\nimport buildViewConverter from '@ckeditor/ckeditor5-engine/src/conversion/buildviewconverter';\nimport ToggleAttributeCommand from '@ckeditor/ckeditor5-core/src/command/toggleattributecommand';\n\nconst BOLD = 'bold';\n\n/**\n * The bold engine feature.\n *\n * It registers the `bold` command and introduces the `bold` attribute in the model which renders to the view\n * as a `<strong>` element.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class BoldEngine extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tconst editor = this.editor;\n\t\tconst data = editor.data;\n\t\tconst editing = editor.editing;\n\n\t\t// Allow bold attribute on all inline nodes.\n\t\teditor.document.schema.allow( { name: '$inline', attributes: [ BOLD ] } );\n\n\t\t// Build converter from model to view for data and editing pipelines.\n\t\tbuildModelConverter().for( data.modelToView, editing.modelToView )\n\t\t\t.fromAttribute( BOLD )\n\t\t\t.toElement( 'strong' );\n\n\t\t// Build converter from view to model for data pipeline.\n\t\tbuildViewConverter().for( data.viewToModel )\n\t\t\t.fromElement( 'strong' )\n\t\t\t.fromElement( 'b' )\n\t\t\t.fromAttribute( 'style', { 'font-weight': 'bold' } )\n\t\t\t.toAttribute( BOLD, true );\n\n\t\t// Create bold command.\n\t\teditor.commands.set( BOLD, new ToggleAttributeCommand( editor, BOLD ) );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-basic-styles/src/boldengine.js\n// module id = 152\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module basic-styles/italicengine\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport buildModelConverter from '@ckeditor/ckeditor5-engine/src/conversion/buildmodelconverter';\nimport buildViewConverter from '@ckeditor/ckeditor5-engine/src/conversion/buildviewconverter';\nimport ToggleAttributeCommand from '@ckeditor/ckeditor5-core/src/command/toggleattributecommand';\n\nconst ITALIC = 'italic';\n\n/**\n * The italic engine feature.\n *\n * It registers the `italic` command and introduces the `italic` attribute in the model which renders to the view\n * as an `<em>` element.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class ItalicEngine extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tconst editor = this.editor;\n\t\tconst data = editor.data;\n\t\tconst editing = editor.editing;\n\n\t\t// Allow italic attribute on all inline nodes.\n\t\teditor.document.schema.allow( { name: '$inline', attributes: [ ITALIC ] } );\n\n\t\t// Build converter from model to view for data and editing pipelines.\n\t\tbuildModelConverter().for( data.modelToView, editing.modelToView )\n\t\t\t.fromAttribute( ITALIC )\n\t\t\t.toElement( 'em' );\n\n\t\t// Build converter from view to model for data pipeline.\n\t\tbuildViewConverter().for( data.viewToModel )\n\t\t\t.fromElement( 'em' )\n\t\t\t.fromElement( 'i' )\n\t\t\t.fromAttribute( 'style', { 'font-style': 'italic' } )\n\t\t\t.toAttribute( ITALIC, true );\n\n\t\t// Create italic command.\n\t\teditor.commands.set( ITALIC, new ToggleAttributeCommand( editor, ITALIC ) );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-basic-styles/src/italicengine.js\n// module id = 153\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module core/command/helpers/isattributeallowedinselection\n */\n\nimport TreeWalker from '@ckeditor/ckeditor5-engine/src/model/treewalker';\n\n/**\n * Checks {@link module:engine/model/document~Document#schema} if attribute is allowed in selection:\n *\n * * if selection is on range, the command is enabled if any of nodes in that range can have bold,\n * * if selection is collapsed, the command is enabled if text with bold is allowed in that node.\n *\n * @param {String} attribute Attribute key.\n * @param {module:engine/model/selection~Selection} selection Selection which ranges will be validate.\n * @param {module:engine/model/schema~Schema} schema Document schema.\n * @returns {Boolean}\n */\nexport default function isAttributeAllowedInSelection( attribute, selection, schema ) {\n\tif ( selection.isCollapsed ) {\n\t\t// Check whether schema allows for a test with `attributeKey` in caret position.\n\t\treturn schema.check( { name: '$text', inside: selection.getFirstPosition(), attributes: attribute } );\n\t} else {\n\t\tconst ranges = selection.getRanges();\n\n\t\t// For all ranges, check nodes in them until you find a node that is allowed to have `attributeKey` attribute.\n\t\tfor ( let range of ranges ) {\n\t\t\tconst walker = new TreeWalker( { boundaries: range, mergeCharacters: true } );\n\t\t\tlet last = walker.position;\n\t\t\tlet step = walker.next();\n\n\t\t\t// Walk the range.\n\t\t\twhile ( !step.done ) {\n\t\t\t\t// If returned item does not have name property, it is a model.TextFragment.\n\t\t\t\tconst name = step.value.item.name || '$text';\n\n\t\t\t\tif ( schema.check( { name: name, inside: last, attributes: attribute } ) ) {\n\t\t\t\t\t// If we found a node that is allowed to have the attribute, return true.\n\t\t\t\t\treturn true;\n\t\t\t\t}\n\n\t\t\t\tlast = walker.position;\n\t\t\t\tstep = walker.next();\n\t\t\t}\n\t\t}\n\t}\n\n\t// If we haven't found such node, return false.\n\treturn false;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-core/src/command/helpers/isattributeallowedinselection.js\n// module id = 154\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module core/command/toggleattributecommand\n */\n\nimport Command from './command';\nimport getSchemaValidRanges from './helpers/getschemavalidranges';\nimport isAttributeAllowedInSelection from './helpers/isattributeallowedinselection';\n\n/**\n * An extension of the base {@link module:core/command/command~Command} class, which provides utilities for a command which toggles a single\n * attribute on a text or an element. `ToggleAttributeCommand` uses {@link module:engine/model/document~Document#selection}\n * to decide which nodes (if any) should be changed, and applies or removes attributes from them.\n *\n * The command checks {@link module:engine/model/document~Document#schema} to decide if it should be enabled.\n */\nexport default class ToggleAttributeCommand extends Command {\n\t/**\n\t * @see module:core/command/command~Command\n\t * @param {module:core/editor/editor~Editor} editor\n\t * @param {String} attributeKey Attribute that will be set by the command.\n\t */\n\tconstructor( editor, attributeKey ) {\n\t\tsuper( editor );\n\n\t\t/**\n\t\t * Attribute that will be set by the command.\n\t\t *\n\t\t * @member {String}\n\t\t */\n\t\tthis.attributeKey = attributeKey;\n\n\t\t/**\n\t\t * Flag indicating whether command is active. For collapsed selection it means that typed characters will have\n\t\t * the command's attribute set. For range selection it means that all nodes inside have the attribute applied.\n\t\t *\n\t\t * @observable\n\t\t * @member {Boolean} #value\n\t\t */\n\t\tthis.set( 'value', false );\n\n\t\tthis.listenTo( this.editor.document.selection, 'change:attribute', () => {\n\t\t\tthis.value = this.editor.document.selection.hasAttribute( this.attributeKey );\n\t\t} );\n\t}\n\n\t/**\n\t * Checks if {@link module:engine/model/document~Document#schema} allows to create attribute in\n\t * {@link module:engine/model/document~Document#selection}.\n\t *\n\t * @private\n\t * @returns {Boolean}\n\t */\n\t_checkEnabled() {\n\t\tconst document = this.editor.document;\n\n\t\treturn isAttributeAllowedInSelection( this.attributeKey, document.selection, document.schema );\n\t}\n\n\t/**\n\t * Executes the command: adds or removes attributes to nodes or selection.\n\t *\n\t * If the command is active (`value == true`), it will remove attributes. Otherwise, it will set attributes.\n\t *\n\t * The execution result differs, depending on the {@link module:engine/model/document~Document#selection}:\n\t * * if selection is on a range, the command applies the attribute on all nodes in that ranges\n\t * (if they are allowed to have this attribute by the {@link module:engine/model/schema~Schema schema}),\n\t * * if selection is collapsed in non-empty node, the command applies attribute to the\n\t * {@link module:engine/model/document~Document#selection} itself (note that typed characters copy attributes from selection),\n\t * * if selection is collapsed in empty node, the command applies attribute to the parent node of selection (note\n\t * that selection inherits all attributes from a node if it is in empty node).\n\t *\n\t * If the command is disabled (`isEnabled == false`) when it is executed, nothing will happen.\n\t *\n\t * @private\n\t * @param {Object} [options] Options of command.\n\t * @param {Boolean} [options.forceValue] If set it will force command behavior. If `true`, command will apply attribute,\n\t * otherwise command will remove attribute. If not set, command will look for it's current value to decide what it should do.\n\t * @param {module:engine/model/batch~Batch} [options.batch] Batch to group undo steps.\n\t */\n\t_doExecute( options = {} ) {\n\t\tconst document = this.editor.document;\n\t\tconst selection = document.selection;\n\t\tconst value = ( options.forceValue === undefined ) ? !this.value : options.forceValue;\n\n\t\t// If selection has non-collapsed ranges, we change attribute on nodes inside those ranges.\n\t\tdocument.enqueueChanges( () => {\n\t\t\tif ( selection.isCollapsed ) {\n\t\t\t\tif ( value ) {\n\t\t\t\t\tselection.setAttribute( this.attributeKey, true );\n\t\t\t\t} else {\n\t\t\t\t\tselection.removeAttribute( this.attributeKey );\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\tconst ranges = getSchemaValidRanges( this.attributeKey, selection.getRanges(), document.schema );\n\n\t\t\t\t// Keep it as one undo step.\n\t\t\t\tconst batch = options.batch || document.batch();\n\n\t\t\t\tfor ( let range of ranges ) {\n\t\t\t\t\tif ( value ) {\n\t\t\t\t\t\tbatch.setAttribute( range, this.attributeKey, value );\n\t\t\t\t\t} else {\n\t\t\t\t\t\tbatch.removeAttribute( range, this.attributeKey );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t} );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-core/src/command/toggleattributecommand.js\n// module id = 155\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/conversion/mapper\n */\n\nimport ModelPosition from '../model/position';\nimport ModelRange from '../model/range';\n\nimport ViewPosition from '../view/position';\nimport ViewRange from '../view/range';\nimport ViewText from '../view/text';\n\nimport EmitterMixin from '@ckeditor/ckeditor5-utils/src/emittermixin';\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\n\n/**\n * Maps elements and positions between {@link module:engine/view/document~Document view} and {@link module:engine/model/model model}.\n *\n * Mapper use bound elements to find corresponding elements and positions, so, to get proper results,\n * all model elements should be {@link module:engine/conversion/mapper~Mapper#bindElements bound}.\n *\n * To map complex model to/from view relations, you may provide custom callbacks for\n * {@link module:engine/conversion/mapper~Mapper#event:modelToViewPosition modelToViewPosition event} and\n * {@link module:engine/conversion/mapper~Mapper#event:viewToModelPosition viewToModelPosition event} that are fired whenever\n * a position mapping request occurs.\n * Those events are fired by {@link module:engine/conversion/mapper~Mapper#toViewPosition toViewPosition}\n * and {@link module:engine/conversion/mapper~Mapper#toModelPosition toModelPosition} methods. `Mapper` adds it's own default callbacks\n * with `'lowest'` priority. To override default `Mapper` mapping, add custom callback with higher priority and\n * stop the event.\n */\nexport default class Mapper {\n\t/**\n\t * Creates an instance of the mapper.\n\t */\n\tconstructor() {\n\t\t/**\n\t\t * Model element to view element mapping.\n\t\t *\n\t\t * @private\n\t\t * @member {WeakMap}\n\t\t */\n\t\tthis._modelToViewMapping = new WeakMap();\n\n\t\t/**\n\t\t * View element to model element mapping.\n\t\t *\n\t\t * @private\n\t\t * @member {WeakMap}\n\t\t */\n\t\tthis._viewToModelMapping = new WeakMap();\n\n\t\t/**\n\t\t * A map containing callbacks between view element names and functions evaluating length of view elements\n\t\t * in model.\n\t\t *\n\t\t * @private\n\t\t * @member {Map}\n\t\t */\n\t\tthis._viewToModelLengthCallbacks = new Map();\n\n\t\t// Default mapper algorithm for mapping model position to view position.\n\t\tthis.on( 'modelToViewPosition', ( evt, data ) => {\n\t\t\tif ( data.viewPosition ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tlet viewContainer = this._modelToViewMapping.get( data.modelPosition.parent );\n\n\t\t\tdata.viewPosition = this._findPositionIn( viewContainer, data.modelPosition.offset );\n\t\t}, { priority: 'low' } );\n\n\t\t// Default mapper algorithm for mapping view position to model position.\n\t\tthis.on( 'viewToModelPosition', ( evt, data ) => {\n\t\t\tif ( data.modelPosition ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tlet viewBlock = data.viewPosition.parent;\n\t\t\tlet modelParent = this._viewToModelMapping.get( viewBlock );\n\n\t\t\twhile ( !modelParent ) {\n\t\t\t\tviewBlock = viewBlock.parent;\n\t\t\t\tmodelParent = this._viewToModelMapping.get( viewBlock );\n\t\t\t}\n\n\t\t\tlet modelOffset = this._toModelOffset( data.viewPosition.parent, data.viewPosition.offset, viewBlock );\n\n\t\t\tdata.modelPosition = ModelPosition.createFromParentAndOffset( modelParent, modelOffset );\n\t\t}, { priority: 'low' } );\n\t}\n\n\t/**\n\t * Marks model and view elements as corresponding. Corresponding elements can be retrieved by using\n\t * the {@link module:engine/conversion/mapper~Mapper#toModelElement toModelElement} and\n\t * {@link module:engine/conversion/mapper~Mapper#toViewElement toViewElement} methods.\n\t * The information that elements are bound is also used to translate positions.\n\t *\n\t * @param {module:engine/model/element~Element} modelElement Model element.\n\t * @param {module:engine/view/element~Element} viewElement View element.\n\t */\n\tbindElements( modelElement, viewElement ) {\n\t\tthis._modelToViewMapping.set( modelElement, viewElement );\n\t\tthis._viewToModelMapping.set( viewElement, modelElement );\n\t}\n\n\t/**\n\t * Unbinds given {@link module:engine/view/element~Element view element} from the map.\n\t *\n\t * @param {module:engine/view/element~Element} viewElement View element to unbind.\n\t */\n\tunbindViewElement( viewElement ) {\n\t\tconst modelElement = this.toModelElement( viewElement );\n\n\t\tthis._unbindElements( modelElement, viewElement );\n\t}\n\n\t/**\n\t * Unbinds given {@link module:engine/model/element~Element model element} from the map.\n\t *\n\t * @param {module:engine/model/element~Element} modelElement Model element to unbind.\n\t */\n\tunbindModelElement( modelElement ) {\n\t\tconst viewElement = this.toViewElement( modelElement );\n\n\t\tthis._unbindElements( modelElement, viewElement );\n\t}\n\n\t/**\n\t * Removes all model to view and view to model bindings.\n\t */\n\tclearBindings() {\n\t\tthis._modelToViewMapping = new WeakMap();\n\t\tthis._viewToModelMapping = new WeakMap();\n\t}\n\n\t/**\n\t * Gets the corresponding model element.\n\t *\n\t * **Note:** {@link module:engine/view/uielement~UIElement} does not have corresponding element in model.\n\t *\n\t * @param {module:engine/view/element~Element} viewElement View element.\n\t * @returns {module:engine/model/element~Element|undefined} Corresponding model element or `undefined` if not found.\n\t */\n\ttoModelElement( viewElement ) {\n\t\treturn this._viewToModelMapping.get( viewElement );\n\t}\n\n\t/**\n\t * Gets the corresponding view element.\n\t *\n\t * @param {module:engine/model/element~Element} modelElement Model element.\n\t * @returns {module:engine/view/element~Element|undefined} Corresponding view element or `undefined` if not found.\n\t */\n\ttoViewElement( modelElement ) {\n\t\treturn this._modelToViewMapping.get( modelElement );\n\t}\n\n\t/**\n\t * Gets the corresponding model range.\n\t *\n\t * @param {module:engine/view/range~Range} viewRange View range.\n\t * @returns {module:engine/model/range~Range} Corresponding model range.\n\t */\n\ttoModelRange( viewRange ) {\n\t\treturn new ModelRange( this.toModelPosition( viewRange.start ), this.toModelPosition( viewRange.end ) );\n\t}\n\n\t/**\n\t * Gets the corresponding view range.\n\t *\n\t * @param {module:engine/model/range~Range} modelRange Model range.\n\t * @returns {module:engine/view/range~Range} Corresponding view range.\n\t */\n\ttoViewRange( modelRange ) {\n\t\treturn new ViewRange( this.toViewPosition( modelRange.start ), this.toViewPosition( modelRange.end ) );\n\t}\n\n\t/**\n\t * Gets the corresponding model position.\n\t *\n\t * @fires viewToModelPosition\n\t * @param {module:engine/view/position~Position} viewPosition View position.\n\t * @returns {module:engine/model/position~Position} Corresponding model position.\n\t */\n\ttoModelPosition( viewPosition ) {\n\t\tconst data = {\n\t\t\tviewPosition: viewPosition,\n\t\t\tmapper: this\n\t\t};\n\n\t\tthis.fire( 'viewToModelPosition', data );\n\n\t\treturn data.modelPosition;\n\t}\n\n\t/**\n\t * Gets the corresponding view position.\n\t *\n\t * @fires modelToViewPosition\n\t * @param {module:engine/model/position~Position} modelPosition Model position.\n\t * @returns {module:engine/view/position~Position} Corresponding view position.\n\t */\n\ttoViewPosition( modelPosition ) {\n\t\tconst data = {\n\t\t\tmodelPosition: modelPosition,\n\t\t\tmapper: this\n\t\t};\n\n\t\tthis.fire( 'modelToViewPosition', data );\n\n\t\treturn data.viewPosition;\n\t}\n\n\t/**\n\t * Registers a callback that evaluates the length in the model of a view element with given name.\n\t *\n\t * The callback is fired with one argument, which is a view element instance. The callback is expected to return\n\t * a number representing the length of view element in model.\n\t *\n\t *\t\t// List item in view may contain nested list, which have other list items. In model though,\n\t *\t\t// the lists are represented by flat structure. Because of those differences, length of list view element\n\t *\t\t// may be greater than one. In the callback it's checked how many nested list items are in evaluated list item.\n\t *\n\t *\t\tfunction getViewListItemLength( element ) {\n\t *\t\t\tlet length = 1;\n\t *\n\t *\t\t\tfor ( let child of element.getChildren() ) {\n\t *\t\t\t\tif ( child.name == 'ul' || child.name == 'ol' ) {\n\t *\t\t\t\t\tfor ( let item of child.getChildren() ) {\n\t *\t\t\t\t\t\tlength += getViewListItemLength( item );\n\t *\t\t\t\t\t}\n\t *\t\t\t\t}\n\t *\t\t\t}\n\t *\n\t *\t\t\treturn length;\n\t *\t\t}\n\t *\n\t *\t\tmapper.registerViewToModelLength( 'li', getViewListItemLength );\n\t *\n\t * @param {String} viewElementName Name of view element for which callback is registered.\n\t * @param {Function} lengthCallback Function return a length of view element instance in model.\n\t */\n\tregisterViewToModelLength( viewElementName, lengthCallback ) {\n\t\tthis._viewToModelLengthCallbacks.set( viewElementName, lengthCallback );\n\t}\n\n\t/**\n\t * Calculates model offset based on the view position and the block element.\n\t *\n\t * Example:\n\t *\n\t *\t\t<p>foo<b>ba|r</b></p> // _toModelOffset( b, 2, p ) -> 5\n\t *\n\t * Is a sum of:\n\t *\n\t *\t\t<p>foo|<b>bar</b></p> // _toModelOffset( p, 3, p ) -> 3\n\t *\t\t<p>foo<b>ba|r</b></p> // _toModelOffset( b, 2, b ) -> 2\n\t *\n\t * @private\n\t * @param {module:engine/view/element~Element} viewParent Position parent.\n\t * @param {Number} viewOffset Position offset.\n\t * @param {module:engine/view/element~Element} viewBlock Block used as a base to calculate offset.\n\t * @returns {Number} Offset in the model.\n\t */\n\t_toModelOffset( viewParent, viewOffset, viewBlock ) {\n\t\tif ( viewBlock != viewParent ) {\n\t\t\t// See example.\n\t\t\tconst offsetToParentStart = this._toModelOffset( viewParent.parent, viewParent.index, viewBlock );\n\t\t\tconst offsetInParent = this._toModelOffset( viewParent, viewOffset, viewParent );\n\n\t\t\treturn offsetToParentStart + offsetInParent;\n\t\t}\n\n\t\t// viewBlock == viewParent, so we need to calculate the offset in the parent element.\n\n\t\t// If the position is a text it is simple (\"ba|r\" -> 2).\n\t\tif ( viewParent.is( 'text' ) ) {\n\t\t\treturn viewOffset;\n\t\t}\n\n\t\t// If the position is in an element we need to sum lengths of siblings ( <b> bar </b> foo | -> 3 + 3 = 6 ).\n\t\tlet modelOffset = 0;\n\n\t\tfor ( let i = 0; i < viewOffset; i++ ) {\n\t\t\tmodelOffset += this.getModelLength( viewParent.getChild( i ) );\n\t\t}\n\n\t\treturn modelOffset;\n\t}\n\n\t/**\n\t * Removes binding between given elements.\n\t *\n\t * @private\n\t * @param {module:engine/model/element~Element} modelElement Model element to unbind.\n\t * @param {module:engine/view/element~Element} viewElement View element to unbind.\n\t */\n\t_unbindElements( modelElement, viewElement ) {\n\t\tthis._viewToModelMapping.delete( viewElement );\n\t\tthis._modelToViewMapping.delete( modelElement );\n\t}\n\n\t/**\n\t * Gets the length of the view element in the model.\n\t *\n\t * The length is calculated as follows:\n\t * * if {@link #registerViewToModelLength length mapping callback} is provided for given `viewNode` it is used to\n\t * evaluate model length (`viewNode` is used as first and only parameter passed to the callback),\n\t * * length of a {@link module:engine/view/text~Text text node} is equal to the length of it's\n\t * {@link module:engine/view/text~Text#data data},\n\t * * length of a {@link module:engine/view/uielement~UIElement ui element} is equal to 0,\n\t * * length of a mapped {@link module:engine/view/element~Element element} is equal to 1,\n\t * * length of a not-mapped {@link module:engine/view/element~Element element} is equal to the length of it's children.\n\t *\n\t * Examples:\n\t *\n\t *\t\tfoo                          -> 3 // Text length is equal to it's data length.\n\t *\t\t<p>foo</p>                   -> 1 // Length of an element which is mapped is by default equal to 1.\n\t *\t\t<b>foo</b>                   -> 3 // Length of an element which is not mapped is a length of its children.\n\t *\t\t<div><p>x</p><p>y</p></div>  -> 2 // Assuming that <div> is not mapped and <p> are mapped.\n\t *\n\t * @param {module:engine/view/element~Element} viewNode View node.\n\t * @returns {Number} Length of the node in the tree model.\n\t */\n\tgetModelLength( viewNode ) {\n\t\tif ( this._viewToModelLengthCallbacks.get( viewNode.name ) ) {\n\t\t\tconst callback = this._viewToModelLengthCallbacks.get( viewNode.name );\n\n\t\t\treturn callback( viewNode );\n\t\t} else if ( this._viewToModelMapping.has( viewNode ) ) {\n\t\t\treturn 1;\n\t\t} else if ( viewNode.is( 'text' ) ) {\n\t\t\treturn viewNode.data.length;\n\t\t} else if ( viewNode.is( 'uiElement' ) ) {\n\t\t\treturn 0;\n\t\t} else {\n\t\t\tlet len = 0;\n\n\t\t\tfor ( let child of viewNode.getChildren() ) {\n\t\t\t\tlen += this.getModelLength( child );\n\t\t\t}\n\n\t\t\treturn len;\n\t\t}\n\t}\n\n\t/**\n\t * Finds the position in the view node (or its children) with the expected model offset.\n\t *\n\t * Example:\n\t *\n\t *\t\t<p>fo<b>bar</b>bom</p> -> expected offset: 4\n\t *\n\t *\t\t_findPositionIn( p, 4 ):\n\t *\t\t<p>|fo<b>bar</b>bom</p> -> expected offset: 4, actual offset: 0\n\t *\t\t<p>fo|<b>bar</b>bom</p> -> expected offset: 4, actual offset: 2\n\t *\t\t<p>fo<b>bar</b>|bom</p> -> expected offset: 4, actual offset: 5 -> we are too far\n\t *\n\t *\t\t_findPositionIn( b, 4 - ( 5 - 3 ) ):\n\t *\t\t<p>fo<b>|bar</b>bom</p> -> expected offset: 2, actual offset: 0\n\t *\t\t<p>fo<b>bar|</b>bom</p> -> expected offset: 2, actual offset: 3 -> we are too far\n\t *\n\t *\t\t_findPositionIn( bar, 2 - ( 3 - 3 ) ):\n\t *\t\tWe are in the text node so we can simple find the offset.\n\t *\t\t<p>fo<b>ba|r</b>bom</p> -> expected offset: 2, actual offset: 2 -> position found\n\t *\n\t * @private\n\t * @param {module:engine/view/element~Element} viewParent Tree view element in which we are looking for the position.\n\t * @param {Number} expectedOffset Expected offset.\n\t * @returns {module:engine/view/position~Position} Found position.\n\t */\n\t_findPositionIn( viewParent, expectedOffset ) {\n\t\t// Last scanned view node.\n\t\tlet viewNode;\n\t\t// Length of the last scanned view node.\n\t\tlet lastLength = 0;\n\n\t\tlet modelOffset = 0;\n\t\tlet viewOffset = 0;\n\n\t\t// In the text node it is simple: offset in the model equals offset in the text.\n\t\tif ( viewParent.is( 'text' ) ) {\n\t\t\treturn new ViewPosition( viewParent, expectedOffset );\n\t\t}\n\n\t\t// In other cases we add lengths of child nodes to find the proper offset.\n\n\t\t// If it is smaller we add the length.\n\t\twhile ( modelOffset < expectedOffset ) {\n\t\t\tviewNode = viewParent.getChild( viewOffset );\n\t\t\tlastLength = this.getModelLength( viewNode );\n\t\t\tmodelOffset += lastLength;\n\t\t\tviewOffset++;\n\t\t}\n\n\t\t// If it equals we found the position.\n\t\tif ( modelOffset == expectedOffset ) {\n\t\t\treturn this._moveViewPositionToTextNode( new ViewPosition( viewParent, viewOffset ) );\n\t\t}\n\t\t// If it is higher we need to enter last child.\n\t\telse {\n\t\t\t// ( modelOffset - lastLength ) is the offset to the child we enter,\n\t\t\t// so we subtract it from the expected offset to fine the offset in the child.\n\t\t\treturn this._findPositionIn( viewNode, expectedOffset - ( modelOffset - lastLength ) );\n\t\t}\n\t}\n\n\t/**\n\t * Because we prefer positions in text nodes over positions next to text node moves view position to the text node\n\t * if it was next to it.\n\t *\n\t *\t\t<p>[]<b>foo</b></p> -> <p>[]<b>foo</b></p> // do not touch if position is not directly next to text\n\t *\t\t<p>foo[]<b>foo</b></p> -> <p>foo{}<b>foo</b></p> // move to text node\n\t *\t\t<p><b>[]foo</b></p> -> <p><b>{}foo</b></p> // move to text node\n\t *\n\t * @private\n\t * @param {module:engine/view/position~Position} viewPosition Position potentially next to text node.\n\t * @returns {module:engine/view/position~Position} Position in text node if possible.\n\t */\n\t_moveViewPositionToTextNode( viewPosition ) {\n\t\t// If the position is just after text node, put it at the end of that text node.\n\t\t// If the position is just before text node, put it at the beginning of that text node.\n\t\tconst nodeBefore = viewPosition.nodeBefore;\n\t\tconst nodeAfter = viewPosition.nodeAfter;\n\n\t\tif ( nodeBefore instanceof ViewText ) {\n\t\t\treturn new ViewPosition( nodeBefore, nodeBefore.data.length );\n\t\t} else if ( nodeAfter instanceof ViewText ) {\n\t\t\treturn new ViewPosition( nodeAfter, 0 );\n\t\t}\n\n\t\t// Otherwise, just return the given position.\n\t\treturn viewPosition;\n\t}\n\n\t/**\n\t * Fired for each model-to-view position mapping request. The purpose of this event is to enable custom model-to-view position\n\t * mapping. Callbacks added to this event take {@link module:engine/model/position~Position model position} and are expected to calculate\n\t * {@link module:engine/view/position~Position view position}. Calculated view position should be added as `viewPosition` value in\n\t * `data` object that is passed as one of parameters to the event callback.\n\t *\n\t * \t\t// Assume that \"captionedImage\" model element is converted to <img> and following <span> elements in view,\n\t * \t\t// and the model element is bound to <img> element. Force mapping model positions inside \"captionedImage\" to that <span> element.\n\t *\t\tmapper.on( 'modelToViewPosition', ( evt, data ) => {\n\t *\t\t\tconst positionParent = modelPosition.parent;\n\t *\n\t *\t\t\tif ( positionParent.name == 'captionedImage' ) {\n\t *\t\t\t\tconst viewImg = data.mapper.toViewElement( positionParent );\n\t *\t\t\t\tconst viewCaption = viewImg.nextSibling; // The <span> element.\n\t *\n\t *\t\t\t\tdata.viewPosition = new ViewPosition( viewCaption, modelPosition.offset );\n\t *\n\t *\t\t\t\t// Stop the event if other callbacks should not modify calculated value.\n\t *\t\t\t\tevt.stop();\n\t *\t\t\t}\n\t *\t\t} );\n\t *\n\t * **Note:** keep in mind that custom callback provided for this event should use provided `data.modelPosition` only to check\n\t * what is before the position (or position's parent). This is important when model-to-view position mapping is used in\n\t * remove change conversion. Model after the removed position (that is being mapped) does not correspond to view, so it cannot be used:\n\t *\n\t *\t\t// Incorrect:\n\t *\t\tconst modelElement = data.modelPosition.nodeAfter;\n\t *\t\tconst viewElement = data.mapper.toViewElement( modelElement );\n\t *\t\t// ... Do something with `viewElement` and set `data.viewPosition`.\n\t *\n\t *\t\t// Correct:\n\t *\t\tconst prevModelElement = data.modelPosition.nodeBefore;\n\t *\t\tconst prevViewElement = data.mapper.toViewElement( prevModelElement );\n\t *\t\t// ... Use `prevViewElement` to find correct `data.viewPosition`.\n\t *\n\t * **Note:** default mapping callback is provided with `low` priority setting and does not cancel the event, so it is possible to attach\n\t * a custom callback after default callback and also use `data.viewPosition` calculated by default callback (for example to fix it).\n\t *\n\t * **Note:** default mapping callback will not fire if `data.viewPosition` is already set.\n\t *\n\t * **Note:** these callbacks are called **very often**. For efficiency reasons, it is advised to use them only when position\n\t * mapping between given model and view elements is unsolvable using just elements mapping and default algorithm. Also,\n\t * the condition that checks if special case scenario happened should be as simple as possible.\n\t *\n\t * @event modelToViewPosition\n\t * @param {Object} data Data pipeline object that can store and pass data between callbacks. The callback should add\n\t * `viewPosition` value to that object with calculated {@link module:engine/view/position~Position view position}.\n\t * @param {module:engine/conversion/mapper~Mapper} data.mapper Mapper instance that fired the event.\n\t */\n\n\t/**\n\t * Fired for each view-to-model position mapping request. See {@link module:engine/conversion/mapper~Mapper#event:modelToViewPosition}.\n\t *\n\t * \t\t// See example in `modelToViewPosition` event description.\n\t * \t\t// This custom mapping will map positions from <span> element next to <img> to the \"captionedImage\" element.\n\t *\t\tmapper.on( 'viewToModelPosition', ( evt, data ) => {\n\t *\t\t\tconst positionParent = viewPosition.parent;\n\t *\n\t *\t\t\tif ( positionParent.hasClass( 'image-caption' ) ) {\n\t *\t\t\t\tconst viewImg = positionParent.previousSibling;\n\t *\t\t\t\tconst modelImg = data.mapper.toModelElement( viewImg );\n\t *\n\t *\t\t\t\tdata.modelPosition = new ModelPosition( modelImg, viewPosition.offset );\n\t *\t\t\t\tevt.stop();\n\t *\t\t\t}\n\t *\t\t} );\n\t *\n\t * **Note:** default mapping callback is provided with `low` priority setting and does not cancel the event, so it is possible to attach\n\t * a custom callback after default callback and also use `data.modelPosition` calculated by default callback (for example to fix it).\n\t *\n\t * **Note:** default mapping callback will not fire if `data.modelPosition` is already set.\n\t *\n\t * **Note:** these callbacks are called **very often**. For efficiency reasons, it is advised to use them only when position\n\t * mapping between given model and view elements is unsolvable using just elements mapping and default algorithm. Also,\n\t * the condition that checks if special case scenario happened should be as simple as possible.\n\t *\n\t * @event viewToModelPosition\n\t * @param {Object} data Data pipeline object that can store and pass data between callbacks. The callback should add\n\t * `modelPosition` value to that object with calculated {@link module:engine/model/position~Position model position}.\n\t * @param {module:engine/conversion/mapper~Mapper} data.mapper Mapper instance that fired the event.\n\t */\n}\n\nmix( Mapper, EmitterMixin );\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/conversion/mapper.js\n// module id = 156\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\nimport ViewElement from '../view/element';\nimport ViewRange from '../view/range';\nimport viewWriter from '../view/writer';\n\n/**\n * Contains {@link module:engine/model/selection~Selection model selection} to\n * {@link module:engine/view/selection~Selection view selection} converters for\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher}.\n *\n * @module engine/conversion/model-selection-to-view-converters\n */\n\n/**\n * Function factory, creates a converter that converts non-collapsed {@link module:engine/model/selection~Selection model selection} to\n * {@link module:engine/view/selection~Selection view selection}. The converter consumes appropriate value from `consumable` object\n * and maps model positions from selection to view positions.\n *\n *\t\tmodelDispatcher.on( 'selection', convertRangeSelection() );\n *\n * @returns {Function} Selection converter.\n */\nexport function convertRangeSelection() {\n\treturn ( evt, data, consumable, conversionApi ) => {\n\t\tconst selection = data.selection;\n\n\t\tif ( selection.isCollapsed ) {\n\t\t\treturn;\n\t\t}\n\n\t\tif ( !consumable.consume( selection, 'selection' ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconversionApi.viewSelection.removeAllRanges();\n\n\t\tfor ( let range of selection.getRanges() ) {\n\t\t\tconst viewRange = conversionApi.mapper.toViewRange( range );\n\t\t\tconversionApi.viewSelection.addRange( viewRange, selection.isBackward );\n\t\t}\n\t};\n}\n\n/**\n * Function factory, creates a converter that converts collapsed {@link module:engine/model/selection~Selection model selection} to\n * {@link module:engine/view/selection~Selection view selection}. The converter consumes appropriate value from `consumable` object,\n * maps model selection position to view position and breaks {@link module:engine/view/attributeelement~AttributeElement attribute elements}\n * at the selection position.\n *\n *\t\tmodelDispatcher.on( 'selection', convertCollapsedSelection() );\n *\n * Example of view state before and after converting collapsed selection:\n *\n *\t\t   <p><strong>f^oo<strong>bar</p>\n *\t\t-> <p><strong>f</strong>^<strong>oo</strong>bar</p>\n *\n * By breaking attribute elements like `<strong>`, selection is in correct element. See also complementary\n * {@link module:engine/conversion/model-selection-to-view-converters~convertSelectionAttribute attribute converter}\n * for selection attributes,\n * which wraps collapsed selection into view elements. Those converters together ensure, that selection ends up in\n * appropriate attribute elements.\n *\n * See also {@link module:engine/conversion/model-selection-to-view-converters~clearAttributes} which does a clean-up\n * by merging attributes.\n *\n * @returns {Function} Selection converter.\n */\nexport function convertCollapsedSelection() {\n\treturn ( evt, data, consumable, conversionApi ) => {\n\t\tconst selection = data.selection;\n\n\t\tif ( !selection.isCollapsed ) {\n\t\t\treturn;\n\t\t}\n\n\t\tif ( !consumable.consume( selection, 'selection' ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst modelPosition = selection.getFirstPosition();\n\t\tconst viewPosition = conversionApi.mapper.toViewPosition( modelPosition );\n\t\tconst brokenPosition = viewWriter.breakAttributes( viewPosition );\n\n\t\tconversionApi.viewSelection.removeAllRanges();\n\t\tconversionApi.viewSelection.addRange( new ViewRange( brokenPosition, brokenPosition ) );\n\t};\n}\n\n/**\n * Function factory, creates a converter that converts {@link module:engine/model/selection~Selection model selection} attributes to\n * {@link module:engine/view/attributeelement~AttributeElement view attribute elements}. The converter works only for collapsed selection.\n * The converter consumes appropriate value from `consumable` object, maps model selection position to view position and\n * wraps that position into a view attribute element.\n *\n * The wrapping node depends on passed parameter. If {@link module:engine/view/element~Element} was passed, it will be cloned and\n * the copy will become the wrapping element. If `Function` is provided, it is passed all the parameters of the\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:selectionAttribute selectionAttribute event}.\n * It's expected that the function returns a {@link module:engine/view/attributeelement~AttributeElement}.\n * The result of the function will be the wrapping element.\n *\n *\t\tmodelDispatcher.on( 'selectionAttribute:italic', convertSelectionAttribute( new ViewAttributeElement( 'em' ) ) );\n *\n *\t\tfunction styleElementCreator( styleValue ) {\n *\t\t\tif ( styleValue == 'important' ) {\n *\t\t\t\treturn new ViewAttributeElement( 'strong', { style: 'text-transform:uppercase;' } );\n *\t\t\t} else if ( styleValue == 'gold' ) {\n *\t\t\t\treturn new ViewAttributeElement( 'span', { style: 'color:yellow;' } );\n *\t\t\t}\n *\t\t}\n *\t\tmodelDispatcher.on( 'selectionAttribute:style', convertSelectionAttribute( styleCreator ) );\n *\n * **Note:** You can use the same `elementCreator` function for this converter factory\n * and {@link module:engine/conversion/model-to-view-converters~wrapRange}\n * model to view converter, as long as the `elementCreator` function uses only the first parameter (attribute value).\n *\n *\t\tmodelDispatcher.on( 'selection', convertCollapsedSelection() );\n *\t\tmodelDispatcher.on( 'selectionAttribute:italic', convertSelectionAttribute( new ViewAttributeElement( 'em' ) ) );\n *\t\tmodelDispatcher.on( 'selectionAttribute:bold', convertSelectionAttribute( new ViewAttributeElement( 'strong' ) ) );\n *\n * Example of view states before and after converting collapsed selection:\n *\n *\t\t   <p><em>f^oo</em>bar</p>\n *\t\t-> <p><em>f</em>^<em>oo</em>bar</p>\n *\t\t-> <p><em>f^oo</em>bar</p>\n *\n * Example of view state after converting collapsed selection. The scenario is: selection is inside bold text (`<strong>` element)\n * but it does not have bold attribute itself and has italic attribute instead (let's assume that user turned off bold and turned\n * on italic with selection collapsed):\n *\n *\t\t   <p><strong>f^oo<strong>bar</p>\n *\t\t-> <p><strong>f</strong>^<strong>oo<strong>bar</p>\n *\t\t-> <p><strong>f</strong><em>^</em><strong>oo</strong>bar</p>\n *\n * In first example, nothing has changed, because first `<em>` element got broken by `convertCollapsedSelection()` converter,\n * but then it got wrapped-back by `convertSelectionAttribute()` converter. In second example, notice how `<strong>` element\n * is broken to prevent putting selection in it, since selection has no `bold` attribute.\n *\n * @param {module:engine/view/attributeelement~AttributeElement|Function} elementCreator View element,\n * or function returning a view element, which will be used for wrapping.\n * @returns {Function} Selection converter.\n */\nexport function convertSelectionAttribute( elementCreator ) {\n\treturn ( evt, data, consumable, conversionApi ) => {\n\t\tconst viewElement = elementCreator instanceof ViewElement ?\n\t\t\telementCreator.clone( true ) :\n\t\t\telementCreator( data.value, data, data.selection, consumable, conversionApi );\n\n\t\tif ( !viewElement ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst consumableName = 'selectionAttribute:' + data.key;\n\n\t\twrapCollapsedSelectionPosition( data.selection, conversionApi.viewSelection, viewElement, consumable, consumableName );\n\t};\n}\n\n/**\n * Performs similar conversion as {@link ~convertSelectionAttribute}, but depends on a marker name of a marker in which\n * collapsed selection is placed.\n *\n *\t\tmodelDispatcher.on( 'selectionMarker:searchResult', wrapRange( new ViewAttributeElement( 'span', { class: 'searchResult' } ) ) );\n *\n * **Note:** You can use the same `elementCreator` function for this converter factory\n * and {@link module:engine/conversion/model-to-view-converters~wrapRange}.\n *\n * @see module:engine/conversion/model-selection-to-view-converters~convertSelectionAttribute\n * @param {module:engine/view/attributeelement~AttributeElement|Function} elementCreator View element,\n * or function returning a view element, which will be used for wrapping.\n * @returns {Function} Selection converter.\n */\nexport function convertSelectionMarker( elementCreator ) {\n\treturn ( evt, data, consumable, conversionApi ) => {\n\t\tconst viewElement = elementCreator instanceof ViewElement ?\n\t\t\telementCreator.clone( true ) :\n\t\t\telementCreator( data, consumable, conversionApi );\n\n\t\tif ( !viewElement ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst consumableName = 'selectionMarker:' + data.name;\n\n\t\twrapCollapsedSelectionPosition( data.selection, conversionApi.viewSelection, viewElement, consumable, consumableName );\n\t};\n}\n\n// Helper function for `convertSelectionAttribute` and `convertSelectionMarker`, which perform similar task.\nfunction wrapCollapsedSelectionPosition( modelSelection, viewSelection, viewElement, consumable, consumableName ) {\n\tif ( !modelSelection.isCollapsed ) {\n\t\treturn;\n\t}\n\n\tif ( !consumable.consume( modelSelection, consumableName ) ) {\n\t\treturn;\n\t}\n\n\tlet viewPosition = viewSelection.getFirstPosition();\n\tviewPosition = viewWriter.wrapPosition( viewPosition, viewElement );\n\n\tviewSelection.removeAllRanges();\n\tviewSelection.addRange( new ViewRange( viewPosition, viewPosition ) );\n}\n\n/**\n * Function factory, creates a converter that clears artifacts after the previous\n * {@link module:engine/model/selection~Selection model selection} conversion. It removes all empty\n * {@link module:engine/view/attributeelement~AttributeElement view attribute elements} and merge sibling attributes at all start and end\n * positions of all ranges.\n *\n *\t\t   <p><strong>^</strong></p>\n *\t\t-> <p>^</p>\n *\n *\t\t   <p><strong>foo</strong>^<strong>bar</strong>bar</p>\n *\t\t-> <p><strong>foo^bar<strong>bar</p>\n *\n *\t\t   <p><strong>foo</strong><em>^</em><strong>bar</strong>bar</p>\n *\t\t-> <p><strong>foo^bar<strong>bar</p>\n *\n * This listener should be assigned before any converter for the new selection:\n *\n *\t\tmodelDispatcher.on( 'selection', clearAttributes() );\n *\n * See {@link module:engine/conversion/model-selection-to-view-converters~convertCollapsedSelection}\n * which do the opposite by breaking attributes in the selection position.\n *\n * @returns {Function} Selection converter.\n */\nexport function clearAttributes() {\n\treturn ( evt, data, consumable, conversionApi ) => {\n\t\tfor ( let range of conversionApi.viewSelection.getRanges() ) {\n\t\t\t// Not collapsed selection should not have artifacts.\n\t\t\tif ( range.isCollapsed ) {\n\t\t\t\t// Position might be in the node removed by the view writer.\n\t\t\t\tif ( range.end.parent.document ) {\n\t\t\t\t\tviewWriter.mergeAttributes( range.start );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t\tconversionApi.viewSelection.removeAllRanges();\n\t};\n}\n\n/**\n * Function factory, creates a converter that clears fake selection marking after the previous\n * {@link module:engine/model/selection~Selection model selection} conversion.\n */\nexport function clearFakeSelection() {\n\treturn ( evt, data, consumable, conversionApi ) => conversionApi.viewSelection.setFake( false );\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/conversion/model-selection-to-view-converters.js\n// module id = 157\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/conversion/modelconversiondispatcher\n */\n\nimport Consumable from './modelconsumable';\nimport Range from '../model/range';\nimport Position from '../model/position';\nimport DocumentFragment from '../model/documentfragment';\nimport EmitterMixin from '@ckeditor/ckeditor5-utils/src/emittermixin';\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\nimport extend from '@ckeditor/ckeditor5-utils/src/lib/lodash/extend';\n\n/**\n * `ModelConversionDispatcher` is a central point of {@link module:engine/model/model model} conversion, which is\n * a process of reacting to changes in the model and reflecting them by listeners that listen to those changes.\n * In default application, {@link module:engine/model/model model} is converted to {@link module:engine/view/view view}. This means\n * that changes in the model are reflected by changing the view (i.e. adding view nodes or changing attributes on view elements).\n *\n * During conversion process, `ModelConversionDispatcher` fires data-manipulation events, basing on state of the model and prepares\n * data for those events. It is important to note that the events are connected with \"change actions\" like \"inserting\"\n * or \"removing\" so one might say that we are converting \"changes\". This is in contrary to view to model conversion,\n * where we convert view nodes (the structure, not \"changes\" to the view). Note, that because changes are converted\n * and not the structure itself, there is a need to have a mapping between model and the structure on which changes are\n * reflected. To map elements during model to view conversion use {@link module:engine/conversion/mapper~Mapper}.\n *\n * The main use for this class is to listen to {@link module:engine/model/document~Document#event:change Document change event}, process it\n * and then fire specific events telling what exactly has changed. For those events, `ModelConversionDispatcher`\n * creates {@link module:engine/conversion/modelconsumable~ModelConsumable list of consumable values} that should be handled by event\n * callbacks. Those events are listened to by model-to-view converters which convert changes done in the\n * {@link module:engine/model/model model} to changes in the {@link module:engine/view/view view}. `ModelConversionController` also checks\n * the current state of consumables, so it won't fire events for parts of model that were already consumed. This is\n * especially important in callbacks that consume multiple values. See {@link module:engine/conversion/modelconsumable~ModelConsumable}\n * for an example of such callback.\n *\n * Although the primary usage for this class is the model-to-view conversion, `ModelConversionDispatcher` can be used\n * to build custom data processing pipelines that converts model to anything that is needed. Existing model structure can\n * be used to generate events (listening to {@link module:engine/model/document~Document#event:change Document change event} is not\n * required)\n * and custom callbacks can be added to the events (these does not have to be limited to changes in the view).\n *\n * When providing your own event listeners for `ModelConversionDispatcher` keep in mind that any callback that had\n * {@link module:engine/conversion/modelconsumable~ModelConsumable#consume consumed} a value from consumable (and did some changes, i.e. to\n * the view) should also stop the event. This is because whenever a callback is fired it is assumed that there is something\n * to be consumed. Thanks to that approach, you do not have to test whether there is anything to consume at the beginning\n * of your listener callback.\n *\n * Example of providing a converter for `ModelConversionDispatcher`:\n *\n *\t\t// We will convert inserting \"paragraph\" model element into the model.\n *\t\tmodelDispatcher.on( 'insert:paragraph', ( evt, data, consumable, conversionApi ) => {\n *\t\t\t// Remember to consume the part of consumable.\n *\t\t\tconsumable.consume( data.item, 'insert' );\n *\n *\t\t\t// Translate position in model to position in the view.\n *\t\t\tconst viewPosition = conversionApi.mapper.toViewPosition( data.range.start );\n *\n *\t\t\t// Create a P element (note that this converter is for inserting P elements -> 'insert:paragraph').\n *\t\t\tconst viewElement = new ViewElement( 'p' );\n *\n *\t\t\t// Bind the newly created view element to model element so positions will map accordingly in future.\n *\t\t\tconversionApi.mapper.bindElements( data.item, viewElement );\n *\n *\t\t\t// Add the newly created view element to the view.\n *\t\t\tviewWriter.insert( viewPosition, viewElement );\n *\n *\t\t\t// Remember to stop the event propagation if the data.item was consumed.\n *\t\t\tevt.stop();\n *\t\t} );\n *\n * Callback that \"overrides\" other callback:\n *\n *\t\t// Special converter for `linkHref` attribute added on custom `quote` element. Note, that this\n *\t\t// attribute may be the same as the attribute added by other features (link feature in this case).\n *\t\t// It might be even added by that feature! It makes sense that a part of content that is a quote is linked\n *\t\t// to an external source so it makes sense that link feature works on the custom quote element.\n *\t\t// However, we have to make sure that the attributes added by link feature are correctly converted.\n *\t\t// To block default `linkHref` conversion we have to:\n *\t\t// 1) add this callback with higher priority than link feature callback,\n *\t\t// 2) consume `linkHref` attribute add change.\n *\t\tmodelConversionDispatcher.on( 'addAttribute:linkHref:quote', ( evt, data, consumable, conversionApi ) => {\n *\t\t\tconsumable.consume( data.item, 'addAttribute:linkHref' );\n *\n *\t\t\t// Create a button that will represent the `linkHref` attribute.\n *\t\t\tlet viewSourceBtn = new ViewElement( 'a', {\n *\t\t\t\thref: data.item.getAttribute( 'linkHref' ),\n *\t\t\t\ttitle: 'source'\n *\t\t\t} );\n *\n *\t\t\t// Add a class for the button.\n *\t\t\tviewSourceBtn.addClass( 'source' );\n *\n *\t\t\t// Insert the button using writer API.\n *\t\t\t// If `addAttribute` event is fired by\n *\t\t\t// `module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#convertInsert` it is fired\n *\t\t\t// after `data.item` insert conversion was done. If the event is fired due to attribute insertion coming from\n *\t\t\t// different source, `data.item` already existed. This means we are safe to get `viewQuote` from mapper.\n *\t\t\tconst viewQuote = conversionApi.mapper.toViewElement( data.item );\n *\t\t\tconst position = new ViewPosition( viewQuote, viewQuote.childCount );\n *\t\t\tviewWriter.insert( position, viewSourceBtn );\n *\n *\t\t\tevt.stop();\n *\t\t}, { priority: 'high' } );\n */\nexport default class ModelConversionDispatcher {\n\t/**\n\t * Creates a `ModelConversionDispatcher` that operates using passed API.\n\t *\n\t * @param {module:engine/model/document~Document} modelDocument Model document instance bound with this dispatcher.\n\t * @param {Object} [conversionApi] Interface passed by dispatcher to the events callbacks.\n\t */\n\tconstructor( modelDocument, conversionApi = {} ) {\n\t\t/**\n\t\t * Model document instance bound with this dispatcher.\n\t\t *\n\t\t * @private\n\t\t * @member {module:engine/model/document~Document}\n\t\t */\n\t\tthis._modelDocument = modelDocument;\n\n\t\t/**\n\t\t * Interface passed by dispatcher to the events callbacks.\n\t\t *\n\t\t * @member {Object}\n\t\t */\n\t\tthis.conversionApi = extend( { dispatcher: this }, conversionApi );\n\t}\n\n\t/**\n\t * Prepares data and fires a proper event.\n\t *\n\t * The method is crafted to take use of parameters passed in {@link module:engine/model/document~Document#event:change Document change\n\t * event}.\n\t *\n\t * @see module:engine/model/document~Document#event:change\n\t * @fires insert\n\t * @fires remove\n\t * @fires addAttribute\n\t * @fires removeAttribute\n\t * @fires changeAttribute\n\t * @fires addMarker\n\t * @param {String} type Change type.\n\t * @param {Object} data Additional information about the change.\n\t */\n\tconvertChange( type, data ) {\n\t\t// Do not convert changes if they happen in graveyard.\n\t\t// Graveyard is a special root that has no view / no other representation and changes done in it should not be converted.\n\t\tif ( type !== 'remove' && data.range && data.range.root.rootName == '$graveyard' ) {\n\t\t\treturn;\n\t\t}\n\n\t\tif ( type == 'remove' && data.sourcePosition.root.rootName == '$graveyard' ) {\n\t\t\treturn;\n\t\t}\n\n\t\tif ( type == 'rename' && data.element.root.rootName == '$graveyard' ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// We can safely dispatch changes.\n\t\tif ( type == 'insert' || type == 'reinsert' ) {\n\t\t\tthis.convertInsertion( data.range );\n\t\t} else if ( type == 'move' ) {\n\t\t\tthis.convertMove( data.sourcePosition, data.range );\n\t\t} else if ( type == 'remove' ) {\n\t\t\tthis.convertRemove( data.sourcePosition, data.range );\n\t\t} else if ( type == 'addAttribute' || type == 'removeAttribute' || type == 'changeAttribute' ) {\n\t\t\tthis.convertAttribute( type, data.range, data.key, data.oldValue, data.newValue );\n\t\t} else if ( type == 'rename' ) {\n\t\t\tthis.convertRename( data.element, data.oldName );\n\t\t}\n\t}\n\n\t/**\n\t * Starts conversion of insertion-change on given `range`.\n\t *\n\t * Analyzes given range and fires insertion-connected events with data based on that range.\n\t *\n\t * **Note**: This method will fire separate events for node insertion and attributes insertion. All\n\t * attributes that are set on inserted nodes are treated like they were added just after node insertion.\n\t *\n\t * @fires insert\n\t * @fires addAttribute\n\t * @fires addMarker\n\t * @param {module:engine/model/range~Range} range Inserted range.\n\t */\n\tconvertInsertion( range ) {\n\t\t// Create a list of things that can be consumed, consisting of nodes and their attributes.\n\t\tconst consumable = this._createInsertConsumable( range );\n\n\t\t// Fire a separate insert event for each node and text fragment contained in the range.\n\t\tfor ( let value of range ) {\n\t\t\tconst item = value.item;\n\t\t\tconst itemRange = Range.createFromPositionAndShift( value.previousPosition, value.length );\n\t\t\tconst data = {\n\t\t\t\titem: item,\n\t\t\t\trange: itemRange\n\t\t\t};\n\n\t\t\tthis._testAndFire( 'insert', data, consumable );\n\n\t\t\t// Fire a separate addAttribute event for each attribute that was set on inserted items.\n\t\t\t// This is important because most attributes converters will listen only to add/change/removeAttribute events.\n\t\t\t// If we would not add this part, attributes on inserted nodes would not be converted.\n\t\t\tfor ( let key of item.getAttributeKeys() ) {\n\t\t\t\tdata.attributeKey = key;\n\t\t\t\tdata.attributeOldValue = null;\n\t\t\t\tdata.attributeNewValue = item.getAttribute( key );\n\n\t\t\t\tthis._testAndFire( `addAttribute:${ key }`, data, consumable );\n\t\t\t}\n\t\t}\n\n\t\tfor ( let marker of this._modelDocument.markers ) {\n\t\t\tconst markerRange = marker.getRange();\n\n\t\t\t// Check if inserted content is inserted into a marker.\n\t\t\tif ( markerRange.containsPosition( range.start ) ) {\n\t\t\t\tthis.convertMarker( 'addMarker', marker.name, markerRange.getIntersection( range ) );\n\t\t\t}\n\n\t\t\t// Check if inserted content contains a marker.\n\t\t\tif ( range.containsRange( markerRange ) || range.isEqual( markerRange ) ) {\n\t\t\t\tthis.convertMarker( 'addMarker', marker.name, markerRange );\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Starts conversion of move-change of given `range`, that was moved from given `sourcePosition`.\n\t *\n\t * Fires {@link ~#event:remove remove event} and {@link ~#event:insert insert event} based on passed parameters.\n\t *\n\t * @fires remove\n\t * @fires insert\n\t * @param {module:engine/model/position~Position} sourcePosition The original position from which the range was moved.\n\t * @param {module:engine/model/range~Range} range The range containing the moved content.\n\t */\n\tconvertMove( sourcePosition, range ) {\n\t\t// Move left – convert insertion first (#847).\n\t\tif ( range.start.isBefore( sourcePosition ) ) {\n\t\t\tthis.convertInsertion( range );\n\n\t\t\tconst sourcePositionAfterInsertion\n\t\t\t\t= sourcePosition._getTransformedByInsertion( range.start, range.end.offset - range.start.offset );\n\n\t\t\tthis.convertRemove( sourcePositionAfterInsertion, range );\n\t\t} else {\n\t\t\tthis.convertRemove( sourcePosition, range );\n\t\t\tthis.convertInsertion( range );\n\t\t}\n\t}\n\n\t/**\n\t * Starts conversion of remove-change of given `range`, that was removed from given `sourcePosition`.\n\t *\n\t * Fires {@link ~#event:remove remove event} with data based on passed values.\n\t *\n\t * @fires remove\n\t * @param {module:engine/model/position~Position} sourcePosition Position from where the range has been removed.\n\t * @param {module:engine/model/range~Range} range Removed range (after remove, in\n\t * {@link module:engine/model/document~Document#graveyard graveyard root}).\n\t */\n\tconvertRemove( sourcePosition, range ) {\n\t\tconst consumable = this._createConsumableForRange( range, 'remove' );\n\n\t\tfor ( let item of range.getItems( { shallow: true } ) ) {\n\t\t\tconst data = {\n\t\t\t\tsourcePosition: sourcePosition,\n\t\t\t\titem: item\n\t\t\t};\n\n\t\t\tthis._testAndFire( `remove`, data, consumable );\n\t\t}\n\t}\n\n\t/**\n\t * Starts conversion of attribute-change on given `range`.\n\t *\n\t * Analyzes given attribute change and fires attributes-connected events with data based on passed values.\n\t *\n\t * @fires addAttribute\n\t * @fires removeAttribute\n\t * @fires changeAttribute\n\t * @param {String} type Change type. Possible values: `addAttribute`, `removeAttribute`, `changeAttribute`.\n\t * @param {module:engine/model/range~Range} range Changed range.\n\t * @param {String} key Attribute key.\n\t * @param {*} oldValue Attribute value before the change or `null` if attribute has not been set.\n\t * @param {*} newValue New attribute value or `null` if attribute has been removed.\n\t */\n\tconvertAttribute( type, range, key, oldValue, newValue ) {\n\t\t// Create a list with attributes to consume.\n\t\tconst consumable = this._createConsumableForRange( range, type + ':' + key );\n\n\t\t// Create a separate attribute event for each node in the range.\n\t\tfor ( let value of range ) {\n\t\t\tconst item = value.item;\n\t\t\tconst itemRange = Range.createFromPositionAndShift( value.previousPosition, value.length );\n\t\t\tconst data = {\n\t\t\t\titem: item,\n\t\t\t\trange: itemRange,\n\t\t\t\tattributeKey: key,\n\t\t\t\tattributeOldValue: oldValue,\n\t\t\t\tattributeNewValue: newValue\n\t\t\t};\n\n\t\t\tthis._testAndFire( `${ type }:${ key }`, data, consumable );\n\t\t}\n\t}\n\n\t/**\n\t * Starts conversion of rename-change of given `element` that had given `oldName`.\n\t *\n\t * Fires {@link ~#event:remove remove event} and {@link ~#event:insert insert event} based on passed values.\n\t *\n\t * @fires remove\n\t * @fires insert\n\t * @param {module:engine/model/element~Element} element Renamed element.\n\t * @param {String} oldName Name of the renamed element before it was renamed.\n\t */\n\tconvertRename( element, oldName ) {\n\t\t// Create fake element that will be used to fire remove event. The fake element will have the old element name.\n\t\tconst fakeElement = element.clone( true );\n\t\tfakeElement.name = oldName;\n\n\t\t// Bind fake element with original view element so the view element will be removed.\n\t\tthis.conversionApi.mapper.bindElements(\n\t\t\tfakeElement,\n\t\t\tthis.conversionApi.mapper.toViewElement( element )\n\t\t);\n\n\t\t// Create fake document fragment so a range can be created on fake element.\n\t\tconst fakeDocumentFragment = new DocumentFragment();\n\t\tfakeDocumentFragment.appendChildren( fakeElement );\n\n\t\tthis.convertRemove( Position.createBefore( element ), Range.createOn( fakeElement ) );\n\t\tthis.convertInsertion( Range.createOn( element ) );\n\t}\n\n\t/**\n\t * Starts selection conversion.\n\t *\n\t * Fires events for given {@link module:engine/model/selection~Selection selection} to start selection conversion.\n\t *\n\t * @fires selection\n\t * @fires selectionAttribute\n\t * @param {module:engine/model/selection~Selection} selection Selection to convert.\n\t */\n\tconvertSelection( selection ) {\n\t\tconst markers = Array.from( this._modelDocument.markers.getMarkersAtPosition( selection.getFirstPosition() ) );\n\t\tconst consumable = this._createSelectionConsumable( selection, markers );\n\n\t\tthis.fire( 'selection', { selection }, consumable, this.conversionApi );\n\n\t\tfor ( let marker of markers ) {\n\t\t\tconst data = {\n\t\t\t\tselection: selection,\n\t\t\t\tname: marker.name\n\t\t\t};\n\n\t\t\tif ( consumable.test( selection, 'selectionMarker:' + marker.name ) ) {\n\t\t\t\tthis.fire( 'selectionMarker:' + marker.name, data, consumable, this.conversionApi );\n\t\t\t}\n\t\t}\n\n\t\tfor ( let key of selection.getAttributeKeys() ) {\n\t\t\tconst data = {\n\t\t\t\tselection: selection,\n\t\t\t\tkey: key,\n\t\t\t\tvalue: selection.getAttribute( key )\n\t\t\t};\n\n\t\t\t// Do not fire event if the attribute has been consumed.\n\t\t\tif ( consumable.test( selection, 'selectionAttribute:' + data.key ) ) {\n\t\t\t\tthis.fire( 'selectionAttribute:' + data.key, data, consumable, this.conversionApi );\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Starts marker-conversion.\n\t *\n\t * Fires {@link ~#event:addMarker addMarker event} or {@link ~#event:removeMarker removeMarker event} based on\n\t * given `type` with data based on passed parameters.\n\t *\n\t * @fires addMarker\n\t * @fires removeMarker\n\t * @param {'addMarker'|'removeMarker'} type Change type.\n\t * @param {String} name Marker name.\n\t * @param {module:engine/model/range~Range} range Marker range.\n\t */\n\tconvertMarker( type, name, range ) {\n\t\t// Do not convert if range is in graveyard or not in the document (e.g. in DocumentFragment).\n\t\tif ( !range.root.document || range.root.rootName == '$graveyard' ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst consumable = this._createMarkerConsumable( type, range );\n\t\tconst data = { name, range };\n\n\t\tthis.fire( type + ':' + name, data, consumable, this.conversionApi );\n\t}\n\n\t/**\n\t * Creates {@link module:engine/conversion/modelconsumable~ModelConsumable} with values to consume from given range, assuming that\n\t * given range has just been inserted to the model.\n\t *\n\t * @private\n\t * @param {module:engine/model/range~Range} range Inserted range.\n\t * @returns {module:engine/conversion/modelconsumable~ModelConsumable} Values to consume.\n\t */\n\t_createInsertConsumable( range ) {\n\t\tconst consumable = new Consumable();\n\n\t\tfor ( let value of range ) {\n\t\t\tconst item = value.item;\n\n\t\t\tconsumable.add( item, 'insert' );\n\n\t\t\tfor ( let key of item.getAttributeKeys() ) {\n\t\t\t\tconsumable.add( item, 'addAttribute:' + key );\n\t\t\t}\n\t\t}\n\n\t\treturn consumable;\n\t}\n\n\t/**\n\t * Creates {@link module:engine/conversion/modelconsumable~ModelConsumable} with values of given `type`\n\t * for each item from given `range`.\n\t *\n\t * @private\n\t * @param {module:engine/model/range~Range} range Affected range.\n\t * @param {String} type Consumable type.\n\t * @returns {module:engine/conversion/modelconsumable~ModelConsumable} Values to consume.\n\t */\n\t_createConsumableForRange( range, type ) {\n\t\tconst consumable = new Consumable();\n\n\t\tfor ( let item of range.getItems() ) {\n\t\t\tconsumable.add( item, type );\n\t\t}\n\n\t\treturn consumable;\n\t}\n\n\t/**\n\t * Creates {@link module:engine/conversion/modelconsumable~ModelConsumable} with selection consumable values.\n\t *\n\t * @private\n\t * @param {module:engine/model/selection~Selection} selection Selection to create consumable from.\n\t * @param {Iterable.<module:engine/model/markercollection~Marker>} markers Markers which contains selection.\n\t * @returns {module:engine/conversion/modelconsumable~ModelConsumable} Values to consume.\n\t */\n\t_createSelectionConsumable( selection, markers ) {\n\t\tconst consumable = new Consumable();\n\n\t\tconsumable.add( selection, 'selection' );\n\n\t\tfor ( let marker of markers ) {\n\t\t\tconsumable.add( selection, 'selectionMarker:' + marker.name );\n\t\t}\n\n\t\tfor ( let key of selection.getAttributeKeys() ) {\n\t\t\tconsumable.add( selection, 'selectionAttribute:' + key );\n\t\t}\n\n\t\treturn consumable;\n\t}\n\n\t/**\n\t * Creates {@link module:engine/conversion/modelconsumable~ModelConsumable} for adding or removing marker on given `range`.\n\t *\n\t * @private\n\t * @param {'addMarker'|'removeMarker'} type Change type.\n\t * @param {module:engine/model/range~Range} range Range on which marker was added or removed.\n\t * @returns {module:engine/conversion/modelconsumable~ModelConsumable} Values to consume.\n\t */\n\t_createMarkerConsumable( type, range ) {\n\t\tconst consumable = new Consumable();\n\n\t\tconsumable.add( range, type );\n\n\t\treturn consumable;\n\t}\n\n\t/**\n\t * Tests passed `consumable` to check whether given event can be fired and if so, fires it.\n\t *\n\t * @private\n\t * @fires insert\n\t * @fires remove\n\t * @fires addAttribute\n\t * @fires removeAttribute\n\t * @fires changeAttribute\n\t * @param {String} type Event type.\n\t * @param {Object} data Event data.\n\t * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n\t */\n\t_testAndFire( type, data, consumable ) {\n\t\tif ( !consumable.test( data.item, type ) ) {\n\t\t\t// Do not fire event if the item was consumed.\n\t\t\treturn;\n\t\t}\n\n\t\tconst name = data.item.name || '$text';\n\n\t\tthis.fire( type + ':' + name, data, consumable, this.conversionApi );\n\t}\n\n\t/**\n\t * Fired for inserted nodes.\n\t *\n\t * `insert` is a namespace for a class of events. Names of actually called events follow this pattern:\n\t * `insert:<name>`. `name` is either `'$text'` when one or more characters has been inserted or\n\t * {@link module:engine/model/element~Element#name name} of inserted element.\n\t *\n\t * This way listeners can either listen to a general `insert` event or specific event (for example `insert:paragraph`).\n\t *\n\t * @event insert\n\t * @param {Object} data Additional information about the change.\n\t * @param {module:engine/model/item~Item} data.item Inserted item.\n\t * @param {module:engine/model/range~Range} data.range Range spanning over inserted item.\n\t * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n\t * @param {Object} conversionApi Conversion interface to be used by callback, passed in `ModelConversionDispatcher` constructor.\n\t */\n\n\t/**\n\t * Fired for removed nodes.\n\t *\n\t * `remove` is a namespace for a class of events. Names of actually called events follow this pattern:\n\t * `remove:<name>`. `name` is either `'$text'` when one or more characters has been removed or the\n\t * {@link module:engine/model/element~Element#name name} of removed element.\n\t *\n\t * This way listeners can either listen to a general `remove` event or specific event (for example `remove:paragraph`).\n\t *\n\t * @event remove\n\t * @param {Object} data Additional information about the change.\n\t * @param {module:engine/model/position~Position} data.sourcePosition Position from where the range has been removed.\n\t * @param {module:engine/model/range~Range} data.range Removed range (in {@link module:engine/model/document~Document#graveyard\n\t * graveyard root}).\n\t * @param {Object} conversionApi Conversion interface to be used by callback, passed in `ModelConversionDispatcher` constructor.\n\t */\n\n\t/**\n\t * Fired when attribute has been added on a node.\n\t *\n\t * `addAttribute` is a namespace for a class of events. Names of actually called events follow this pattern:\n\t * `addAttribute:<attributeKey>:<name>`. `attributeKey` is the key of added attribute. `name` is either `'$text'`\n\t * if attribute was added on one or more characters, or the {@link module:engine/model/element~Element#name name} of\n\t * the element on which attribute was added.\n\t *\n\t * This way listeners can either listen to a general `addAttribute:bold` event or specific event\n\t * (for example `addAttribute:link:image`).\n\t *\n\t * @event addAttribute\n\t * @param {Object} data Additional information about the change.\n\t * @param {module:engine/model/item~Item} data.item Changed item.\n\t * @param {module:engine/model/range~Range} data.range Range spanning over changed item.\n\t * @param {String} data.attributeKey Attribute key.\n\t * @param {null} data.attributeOldValue Attribute value before the change - always `null`. Kept for the sake of unifying events.\n\t * @param {*} data.attributeNewValue New attribute value.\n\t * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n\t * @param {Object} conversionApi Conversion interface to be used by callback, passed in `ModelConversionDispatcher` constructor.\n\t */\n\n\t/**\n\t * Fired when attribute has been removed from a node.\n\t *\n\t * `removeAttribute` is a namespace for a class of events. Names of actually called events follow this pattern:\n\t * `removeAttribute:<attributeKey>:<name>`. `attributeKey` is the key of removed attribute. `name` is either `'$text'`\n\t * if attribute was removed from one or more characters, or the {@link module:engine/model/element~Element#name name} of\n\t * the element from which attribute was removed.\n\t *\n\t * This way listeners can either listen to a general `removeAttribute:bold` event or specific event\n\t * (for example `removeAttribute:link:image`).\n\t *\n\t * @event removeAttribute\n\t * @param {Object} data Additional information about the change.\n\t * @param {module:engine/model/item~Item} data.item Changed item.\n\t * @param {module:engine/model/range~Range} data.range Range spanning over changed item.\n\t * @param {String} data.attributeKey Attribute key.\n\t * @param {*} data.attributeOldValue Attribute value before it was removed.\n\t * @param {null} data.attributeNewValue New attribute value - always `null`. Kept for the sake of unifying events.\n\t * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n\t * @param {Object} conversionApi Conversion interface to be used by callback, passed in `ModelConversionDispatcher` constructor.\n\t */\n\n\t/**\n\t * Fired when attribute of a node has been changed.\n\t *\n\t * `changeAttribute` is a namespace for a class of events. Names of actually called events follow this pattern:\n\t * `changeAttribute:<attributeKey>:<name>`. `attributeKey` is the key of changed attribute. `name` is either `'$text'`\n\t * if attribute was changed on one or more characters, or the {@link module:engine/model/element~Element#name name} of\n\t * the element on which attribute was changed.\n\t *\n\t * This way listeners can either listen to a general `changeAttribute:link` event or specific event\n\t * (for example `changeAttribute:link:image`).\n\t *\n\t * @event changeAttribute\n\t * @param {Object} data Additional information about the change.\n\t * @param {module:engine/model/item~Item} data.item Changed item.\n\t * @param {module:engine/model/range~Range} data.range Range spanning over changed item.\n\t * @param {String} data.attributeKey Attribute key.\n\t * @param {*} data.attributeOldValue Attribute value before the change.\n\t * @param {*} data.attributeNewValue New attribute value.\n\t * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n\t * @param {Object} conversionApi Conversion interface to be used by callback, passed in `ModelConversionDispatcher` constructor.\n\t */\n\n\t/**\n\t * Fired for {@link module:engine/model/selection~Selection selection} changes.\n\t *\n\t * @event selection\n\t * @param {module:engine/model/selection~Selection} selection `Selection` instance that is converted.\n\t * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n\t * @param {Object} conversionApi Conversion interface to be used by callback, passed in `ModelConversionDispatcher` constructor.\n\t */\n\n\t/**\n\t * Fired for {@link module:engine/model/selection~Selection selection} attributes changes.\n\t *\n\t * `selectionAttribute` is a namespace for a class of events. Names of actually called events follow this pattern:\n\t * `selectionAttribute:<attributeKey>`. `attributeKey` is the key of selection attribute. This way listen can listen to\n\t * certain attribute, i.e. `addAttribute:bold`.\n\t *\n\t * @event selectionAttribute\n\t * @param {Object} data Additional information about the change.\n\t * @param {module:engine/model/selection~Selection} data.selection Selection that is converted.\n\t * @param {String} data.attributeKey Key of changed attribute.\n\t * @param {*} data.attributeValue Value of changed attribute.\n\t * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n\t * @param {Object} conversionApi Conversion interface to be used by callback, passed in `ModelConversionDispatcher` constructor.\n\t */\n\n\t/**\n\t * Fired when a new marker is added to the model.\n\t *\n\t * `addMarker` is a namespace for a class of events. Names of actually called events follow this pattern:\n\t * `addMarker:<markerName>`. By specifying certain marker names, you can make the events even more gradual. For example,\n\t * markers can be named `foo:abc`, `foo:bar`, then it is possible to listen to `addMarker:foo` or `addMarker:foo:abc` and\n\t * `addMarker:foo:bar` events.\n\t *\n\t * @event addMarker\n\t * @param {Object} data Additional information about the change.\n\t * @param {String} data.name Marker name.\n\t * @param {module:engine/model/range~Range} data.range Marker range.\n\t * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n\t * @param {Object} conversionApi Conversion interface to be used by callback, passed in `ModelConversionDispatcher` constructor.\n\t */\n\n\t/**\n\t * Fired when marker is removed from the model.\n\t *\n\t * `removeMarker` is a namespace for a class of events. Names of actually called events follow this pattern:\n\t * `removeMarker:<markerName>`. By specifying certain marker names, you can make the events even more gradual. For example,\n\t * markers can be named `foo:abc`, `foo:bar`, then it is possible to listen to `removeMarker:foo` or `removeMarker:foo:abc` and\n\t * `removeMarker:foo:bar` events.\n\t *\n\t * @event removeMarker\n\t * @param {Object} data Additional information about the change.\n\t * @param {String} data.name Marker name.\n\t * @param {module:engine/model/range~Range} data.range Marker range.\n\t * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n\t * @param {Object} conversionApi Conversion interface to be used by callback, passed in `ModelConversionDispatcher` constructor.\n\t */\n}\n\nmix( ModelConversionDispatcher, EmitterMixin );\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/conversion/modelconversiondispatcher.js\n// module id = 158\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/dataprocessor/htmldataprocessor\n */\n\n/* globals document, DOMParser */\n\nimport BasicHtmlWriter from './basichtmlwriter';\nimport DomConverter from '../view/domconverter';\nimport { NBSP_FILLER } from '../view/filler';\n\n/**\n * HtmlDataProcessor class.\n * This data processor implementation uses HTML as input/output data.\n *\n * @implements module:engine/dataprocessor/dataprocessor~DataProcessor\n */\nexport default class HtmlDataProcessor {\n\t/**\n\t * Creates a new instance of the HtmlDataProcessor class.\n\t */\n\tconstructor() {\n\t\t/**\n\t\t * DOMParser instance used to parse HTML string to HTMLDocument.\n\t\t *\n\t\t * @private\n\t\t * @member {DOMParser}\n\t\t */\n\t\tthis._domParser = new DOMParser();\n\n\t\t/**\n\t\t * DOM converter used to convert DOM elements to view elements.\n\t\t *\n\t\t * @private\n\t\t * @member\n\t\t */\n\t\tthis._domConverter = new DomConverter( { blockFiller: NBSP_FILLER } );\n\n\t\t/**\n\t\t * BasicHtmlWriter instance used to convert DOM elements to HTML string.\n\t\t *\n\t\t * @private\n\t\t * @member {module:engine/dataprocessor/basichtmlwriter~BasicHtmlWriter}\n\t\t */\n\t\tthis._htmlWriter = new BasicHtmlWriter();\n\t}\n\n\t/**\n\t * Converts provided {@link module:engine/view/documentfragment~DocumentFragment DocumentFragment}\n\t * to data format - in this case HTML string.\n\t *\n\t * @param {module:engine/view/documentfragment~DocumentFragment} viewFragment\n\t * @returns {String} HTML string.\n\t */\n\ttoData( viewFragment ) {\n\t\t// Convert view DocumentFragment to DOM DocumentFragment.\n\t\tconst domFragment = this._domConverter.viewToDom( viewFragment, document );\n\n\t\t// Convert DOM DocumentFragment to HTML output.\n\t\treturn this._htmlWriter.getHtml( domFragment );\n\t}\n\n\t/**\n\t * Converts provided HTML string to view tree.\n\t *\n\t * @param {String} data HTML string.\n\t * @returns {module:engine/view/node~Node|module:engine/view/documentfragment~DocumentFragment|null} Converted view element.\n\t */\n\ttoView( data ) {\n\t\t// Convert input HTML data to DOM DocumentFragment.\n\t\tconst domFragment = this._toDom( data );\n\n\t\t// Convert DOM DocumentFragment to view DocumentFragment.\n\t\treturn this._domConverter.domToView( domFragment );\n\t}\n\n\t/**\n\t * Converts HTML String to its DOM representation. Returns DocumentFragment, containing nodes parsed from\n\t * provided data.\n\t *\n\t * @private\n\t * @param {String} data\n\t * @returns {DocumentFragment}\n\t */\n\t_toDom( data ) {\n\t\tconst document = this._domParser.parseFromString( data, 'text/html' );\n\t\tconst fragment = document.createDocumentFragment();\n\t\tconst nodes = document.body.childNodes;\n\n\t\twhile ( nodes.length > 0 ) {\n\t\t\tfragment.appendChild( nodes[ 0 ] );\n\t\t}\n\n\t\treturn fragment;\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/dataprocessor/htmldataprocessor.js\n// module id = 159\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/delta/attributedelta\n */\n\nimport Delta from './delta';\nimport DeltaFactory from './deltafactory';\nimport { register } from '../batch';\nimport AttributeOperation from '../operation/attributeoperation';\nimport RootAttributeOperation from '../operation/rootattributeoperation';\nimport Position from '../position';\nimport Range from '../range';\n\n/**\n * To provide specific OT behavior and better collisions solving, methods to change attributes\n * ({@link module:engine/model/batch~Batch#setAttribute} and {@link module:engine/model/batch~Batch#removeAttribute})\n * use `AttributeDelta` class which inherits from the `Delta` class and may overwrite some methods.\n * @extends module:engine/model/delta/delta~Delta\n */\nexport default class AttributeDelta extends Delta {\n\t/**\n\t * @inheritDoc\n\t */\n\tget type() {\n\t\treturn 'attribute';\n\t}\n\n\t/**\n\t * The attribute key that is changed by the delta or `null` if the delta has no operations.\n\t *\n\t * @readonly\n\t * @type {String|null}\n\t */\n\tget key() {\n\t\treturn this.operations[ 0 ] ? this.operations[ 0 ].key : null;\n\t}\n\n\t/**\n\t * The attribute value that is set by the delta or `null` if the delta has no operations.\n\t *\n\t * @readonly\n\t * @type {*|null}\n\t */\n\tget value() {\n\t\treturn this.operations[ 0 ] ? this.operations[ 0 ].newValue : null;\n\t}\n\n\t/**\n\t * The range on which delta operates or `null` if the delta has no operations.\n\t *\n\t * @readonly\n\t * @type {module:engine/model/range~Range|null}\n\t */\n\tget range() {\n\t\t// Check if it is cached.\n\t\tif ( this._range ) {\n\t\t\treturn this._range;\n\t\t}\n\n\t\tlet start = null;\n\t\tlet end = null;\n\n\t\tfor ( let operation of this.operations ) {\n\t\t\tif ( start === null || start.isAfter( operation.range.start ) ) {\n\t\t\t\tstart = operation.range.start;\n\t\t\t}\n\n\t\t\tif ( end === null || end.isBefore( operation.range.end ) ) {\n\t\t\t\tend = operation.range.end;\n\t\t\t}\n\t\t}\n\n\t\tif ( start && end ) {\n\t\t\tthis._range = new Range( start, end );\n\n\t\t\treturn this._range;\n\t\t}\n\n\t\treturn null;\n\t}\n\n\tget _reverseDeltaClass() {\n\t\treturn AttributeDelta;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.delta.AttributeDelta';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get _priority() {\n\t\treturn 20;\n\t}\n}\n\n/**\n * To provide specific OT behavior and better collisions solving, methods to change attributes\n * ({@link module:engine/model/batch~Batch#setAttribute} and {@link module:engine/model/batch~Batch#removeAttribute})\n * use `RootAttributeDelta` class which inherits from the `Delta` class and may\n * overwrite some methods.\n *\n * @extends module:engine/model/delta/delta~Delta\n */\nexport class RootAttributeDelta extends Delta {\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.delta.RootAttributeDelta';\n\t}\n}\n\n/**\n * Sets value of the attribute with given key on a {@link module:engine/model/item~Item model item}\n * or on a {@link module:engine/model/range~Range range}.\n *\n * @chainable\n * @method module:engine/model/batch~Batch#setAttribute\n * @param {module:engine/model/item~Item|module:engine/model/range~Range} itemOrRange\n * Model item or range on which the attribute will be set.\n * @param {String} key Attribute key.\n * @param {*} value Attribute new value.\n */\nregister( 'setAttribute', function( itemOrRange, key, value ) {\n\tattribute( this, key, value, itemOrRange );\n\n\treturn this;\n} );\n\n/**\n * Removes an attribute with given key from a {@link module:engine/model/item~Item model item}\n * or from a {@link module:engine/model/range~Range range}.\n *\n * @chainable\n * @param {module:engine/model/item~Item|module:engine/model/range~Range} itemOrRange\n * Model item or range from which the attribute will be removed.\n * @method module:engine/model/batch~Batch#removeAttribute\n * @param {String} key Attribute key.\n */\nregister( 'removeAttribute', function( itemOrRange, key ) {\n\tattribute( this, key, null, itemOrRange );\n\n\treturn this;\n} );\n\nfunction attribute( batch, key, value, itemOrRange ) {\n\tif ( itemOrRange instanceof Range ) {\n\t\tchangeRange( batch, batch.document, key, value, itemOrRange );\n\t} else {\n\t\tchangeItem( batch, batch.document, key, value, itemOrRange );\n\t}\n}\n\nfunction changeItem( batch, doc, key, value, item ) {\n\tconst previousValue = item.getAttribute( key );\n\tlet range, operation;\n\n\tconst delta = item.is( 'rootElement' ) ? new RootAttributeDelta() : new AttributeDelta();\n\n\tif ( previousValue != value ) {\n\t\tbatch.addDelta( delta );\n\n\t\tif ( item.is( 'rootElement' ) ) {\n\t\t\t// If we change attributes of root element, we have to use `RootAttributeOperation`.\n\t\t\toperation = new RootAttributeOperation( item, key, previousValue, value, doc.version );\n\t\t} else {\n\t\t\tif ( item.is( 'element' ) ) {\n\t\t\t\t// If we change the attribute of the element, we do not want to change attributes of its children, so\n\t\t\t\t// the end of the range cannot be after the closing tag, it should be inside that element, before any of\n\t\t\t\t// it's children, so the range will contain only the opening tag.\n\t\t\t\trange = new Range( Position.createBefore( item ), Position.createFromParentAndOffset( item, 0 ) );\n\t\t\t} else {\n\t\t\t\t// If `item` is text proxy, we create a range from the beginning to the end of that text proxy, to change\n\t\t\t\t// all characters represented by it.\n\t\t\t\trange = new Range( Position.createBefore( item ), Position.createAfter( item ) );\n\t\t\t}\n\n\t\t\toperation = new AttributeOperation( range, key, previousValue, value, doc.version );\n\t\t}\n\n\t\tdelta.addOperation( operation );\n\t\tdoc.applyOperation( operation );\n\t}\n}\n\n// Because attribute operation needs to have the same attribute value on the whole range, this function splits the range\n// into smaller parts.\nfunction changeRange( batch, doc, attributeKey, attributeValue, range ) {\n\tconst delta = new AttributeDelta();\n\n\t// Position of the last split, the beginning of the new range.\n\tlet lastSplitPosition = range.start;\n\n\t// Currently position in the scanning range. Because we need value after the position, it is not a current\n\t// position of the iterator but the previous one (we need to iterate one more time to get the value after).\n\tlet position;\n\t// Value before the currently position.\n\tlet attributeValueBefore;\n\t// Value after the currently position.\n\tlet attributeValueAfter;\n\n\tfor ( let value of range ) {\n\t\tattributeValueAfter = value.item.getAttribute( attributeKey );\n\n\t\t// At the first run of the iterator the position in undefined. We also do not have a attributeValueBefore, but\n\t\t// because attributeValueAfter may be null, attributeValueBefore may be equal attributeValueAfter ( undefined == null ).\n\t\tif ( position && attributeValueBefore != attributeValueAfter ) {\n\t\t\t// if attributeValueBefore == attributeValue there is nothing to change, so we add operation only if these values are different.\n\t\t\tif ( attributeValueBefore != attributeValue ) {\n\t\t\t\taddOperation();\n\t\t\t}\n\n\t\t\tlastSplitPosition = position;\n\t\t}\n\n\t\tposition = value.nextPosition;\n\t\tattributeValueBefore = attributeValueAfter;\n\t}\n\n\t// Because position in the loop is not the iterator position (see let position comment), the last position in\n\t// the while loop will be last but one position in the range. We need to check the last position manually.\n\tif ( position instanceof Position && position != lastSplitPosition && attributeValueBefore != attributeValue ) {\n\t\taddOperation();\n\t}\n\n\tfunction addOperation() {\n\t\t// Add delta to the batch only if there is at least operation in the delta. Add delta only once.\n\t\tif ( delta.operations.length === 0 ) {\n\t\t\tbatch.addDelta( delta );\n\t\t}\n\n\t\tlet range = new Range( lastSplitPosition, position );\n\t\tconst operation = new AttributeOperation( range, attributeKey, attributeValueBefore, attributeValue, doc.version );\n\n\t\tdelta.addOperation( operation );\n\t\tdoc.applyOperation( operation );\n\t}\n}\n\nDeltaFactory.register( AttributeDelta );\nDeltaFactory.register( RootAttributeDelta );\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/delta/attributedelta.js\n// module id = 160\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/delta/renamedelta\n */\n\nimport Delta from './delta';\nimport DeltaFactory from './deltafactory';\nimport { register } from '../batch';\nimport RenameOperation from '../operation/renameoperation';\nimport Element from '../element';\nimport Position from '../position';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/**\n * To provide specific OT behavior and better collisions solving, the {@link module:engine/model/batch~Batch#rename Batch#rename} method\n * uses the `RenameDelta` class which inherits from the `Delta` class and may overwrite some methods.\n */\nexport default class RenameDelta extends Delta {\n\t/**\n\t * @inheritDoc\n\t */\n\tget type() {\n\t\treturn 'rename';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tget _reverseDeltaClass() {\n\t\treturn RenameDelta;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.delta.RenameDelta';\n\t}\n}\n\nfunction apply( batch, delta, operation ) {\n\tdelta.addOperation( operation );\n\tbatch.document.applyOperation( operation );\n}\n\n/**\n * Renames given element.\n *\n * @chainable\n * @method module:engine/model/batch~Batch#rename\n * @param {module:engine/model/element~Element} element The element to rename.\n * @param {String} newName New element name.\n */\nregister( 'rename', function( element, newName ) {\n\tif ( !( element instanceof Element ) ) {\n\t\t/**\n\t\t * Trying to rename an object which is not an instance of Element.\n\t\t *\n\t\t * @error batch-rename-not-element-instance\n\t\t */\n\t\tthrow new CKEditorError( 'batch-rename-not-element-instance: Trying to rename an object which is not an instance of Element.' );\n\t}\n\n\tconst delta = new RenameDelta();\n\tthis.addDelta( delta );\n\n\tapply(\n\t\tthis, delta,\n\t\tnew RenameOperation( Position.createBefore( element ), element.name, newName, this.document.version )\n\t);\n\n\treturn this;\n} );\n\nDeltaFactory.register( RenameDelta );\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/delta/renamedelta.js\n// module id = 161\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/delta/weakinsertdelta\n */\n\nimport InsertDelta from './insertdelta';\nimport { register } from '../batch';\nimport DeltaFactory from './deltafactory';\nimport InsertOperation from '../operation/insertoperation';\nimport { normalizeNodes } from './../writer';\n\n/**\n * @classdesc\n * To provide specific OT behavior and better collisions solving, the {@link module:engine/model/batch~Batch#insert} method\n * uses the `WeakInsertDelta` class which inherits from the `Delta` class and may overwrite some methods.\n */\nexport default class WeakInsertDelta extends InsertDelta {\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.delta.WeakInsertDelta';\n\t}\n}\n\n/**\n * Inserts a node or nodes at given position. {@link module:engine/model/batch~Batch#weakInsert weakInsert} is commonly used for actions\n * like typing or plain-text paste (without formatting). There are two differences between\n * {@link module:engine/model/batch~Batch#insert insert} and {@link module:engine/model/batch~Batch#weakInsert weakInsert}:\n *\n * * When using `weakInsert`, inserted nodes will have same attributes as the current attributes of\n * {@link module:engine/model/document~Document#selection document selection}.\n * * If {@link module:engine/model/operation/insertoperation~InsertOperation insert operation} position is inside a range changed by\n * {@link module:engine/model/operation/attributeoperation~AttributeOperation attribute operation},\n * the attribute operation is split into two operations.\n * Thanks to this, attribute change \"omits\" the inserted nodes. The correct behavior for `WeakInsertDelta` is that\n * {@link module:engine/model/operation/attributeoperation~AttributeOperation AttributeOperation} does not \"break\" and also\n * applies attributes for inserted nodes. This behavior has to be reflected during\n * {@link module:engine/model/delta/transform~transform delta transformation}.\n *\n * @chainable\n * @method module:engine/model/batch~Batch#weakInsert\n * @param {module:engine/model/position~Position} position Position of insertion.\n * @param {module:engine/model/node~NodeSet} nodes The list of nodes to be inserted.\n */\nregister( 'weakInsert', function( position, nodes ) {\n\tconst delta = new WeakInsertDelta();\n\tthis.addDelta( delta );\n\n\tnodes = normalizeNodes( nodes );\n\n\tfor ( let node of nodes ) {\n\t\tnode.setAttributesTo( this.document.selection.getAttributes() );\n\t}\n\n\tconst operation = new InsertOperation( position, nodes, this.document.version );\n\tdelta.addOperation( operation );\n\tthis.document.applyOperation( operation );\n\n\treturn this;\n} );\n\nDeltaFactory.register( WeakInsertDelta );\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/delta/weakinsertdelta.js\n// module id = 162\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/liveposition\n */\n\nimport Position from './position';\nimport Range from './range';\nimport EmitterMixin from '@ckeditor/ckeditor5-utils/src/emittermixin';\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/**\n * `LivePosition` is a type of {@link module:engine/model/position~Position Position}\n * that updates itself as {@link module:engine/model/document~Document document}\n * is changed through operations. It may be used as a bookmark.\n *\n * **Note:** Contrary to {@link module:engine/model/position~Position}, `LivePosition` works only in roots that are\n * {@link module:engine/model/rootelement~RootElement}.\n * If {@link module:engine/model/documentfragment~DocumentFragment} is passed, error will be thrown.\n *\n * **Note:** Be very careful when dealing with `LivePosition`. Each `LivePosition` instance bind events that might\n * have to be unbound.\n * Use {@link module:engine/model/liveposition~LivePosition#detach} whenever you don't need `LivePosition` anymore.\n *\n * @extends module:engine/model/position~Position\n */\nexport default class LivePosition extends Position {\n\t/**\n\t * Creates a live position.\n\t *\n\t * @see module:engine/model/position~Position\n\t * @param {module:engine/model/rootelement~RootElement} root\n\t * @param {Array.<Number>} path\n\t * @param {module:engine/model/position~PositionStickiness} [stickiness] Defaults to `'sticksToNext'`.\n\t * See {@link module:engine/model/liveposition~LivePosition#stickiness}.\n\t */\n\tconstructor( root, path, stickiness ) {\n\t\tsuper( root, path );\n\n\t\tif ( !this.root.is( 'rootElement' ) ) {\n\t\t\t/**\n\t\t\t * LivePosition root has to be an instance of RootElement.\n\t\t\t *\n\t\t\t * @error liveposition-root-not-rootelement\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'model-liveposition-root-not-rootelement: LivePosition root has to be an instance of RootElement.' );\n\t\t}\n\n\t\t/**\n\t\t * Flag representing `LivePosition` stickiness. `LivePosition` might be sticking to previous node or next node.\n\t\t * Whenever some nodes are inserted at the same position as `LivePosition`, `stickiness` is checked to decide if\n\t\t * LivePosition should be moved. Similar applies when a range of nodes is moved and one of it's boundary\n\t\t * position is same as `LivePosition`.\n\t\t *\n\t\t * Examples:\n\t\t *\n\t\t *\t\tInsert:\n\t\t *\t\tPosition is at | and we insert at the same position, marked as ^:\n\t\t *\t\t- | sticks to previous node: `<p>f|^oo</p>` => `<p>f|baroo</p>`\n\t\t *\t\t- | sticks to next node: `<p>f^|oo</p>` => `<p>fbar|oo</p>`\n\t\t *\n\t\t *\t\tMove:\n\t\t *\t\tPosition is at | and range [ ] is moved to position ^:\n\t\t *\t\t- | sticks to previous node: `<p>f|[oo]</p><p>b^ar</p>` => `<p>f|</p><p>booar</p>`\n\t\t *\t\t- | sticks to next node: `<p>f|[oo]</p><p>b^ar</p>` => `<p>f</p><p>b|ooar</p>`\n\t\t *\n\t\t * @member {module:engine/model/position~PositionStickiness} module:engine/model/liveposition~LivePosition#stickiness\n\t\t */\n\t\tthis.stickiness = stickiness || 'sticksToNext';\n\n\t\tbindWithDocument.call( this );\n\t}\n\n\t/**\n\t * Unbinds all events previously bound by `LivePosition`. Use it whenever you don't need `LivePosition` instance\n\t * anymore (i.e. when leaving scope in which it was declared or before re-assigning variable that was\n\t * referring to it).\n\t */\n\tdetach() {\n\t\tthis.stopListening();\n\t}\n\n\t/**\n\t * @static\n\t * @method module:engine/model/liveposition~LivePosition.createAfter\n\t * @see module:engine/model/position~Position.createAfter\n\t * @param {module:engine/model/node~Node} node\n\t * @returns {module:engine/model/liveposition~LivePosition}\n\t */\n\n\t/**\n\t * @static\n\t * @method module:engine/model/liveposition~LivePosition.createBefore\n\t * @see module:engine/model/position~Position.createBefore\n\t * @param {module:engine/model/node~Node} node\n\t * @returns {module:engine/model/liveposition~LivePosition}\n\t */\n\n\t/**\n\t * @static\n\t * @method module:engine/model/liveposition~LivePosition.createFromParentAndOffset\n\t * @see module:engine/model/position~Position.createFromParentAndOffset\n\t * @param {module:engine/model/element~Element} parent\n\t * @param {Number} offset\n\t * @returns {module:engine/model/liveposition~LivePosition}\n\t */\n\n\t/**\n\t * @static\n\t * @method module:engine/model/liveposition~LivePosition.createFromPosition\n\t * @see module:engine/model/position~Position.createFromPosition\n\t * @param {module:engine/model/position~Position} position\n\t * @returns {module:engine/model/liveposition~LivePosition}\n\t */\n\n\t/**\n\t * Fired when `LivePosition` instance is changed due to changes on {@link module:engine/model/document~Document}.\n\t *\n\t * @event module:engine/model/liveposition~LivePosition#change\n\t * @param {module:engine/model/position~Position} oldPosition Position equal to this live position before it got changed.\n\t */\n}\n\n/**\n * Binds this `LivePosition` to the {@link module:engine/model/document~Document document} that owns\n * this position's {@link module:engine/model/position~Position#root root}.\n *\n * @ignore\n * @private\n * @method module:engine/model/liveposition~LivePosition.bindWithDocument\n */\nfunction bindWithDocument() {\n\t/*jshint validthis: true */\n\t// Operation types handled by LivePosition (these are operations that change model tree structure).\n\tconst supportedTypes = new Set( [ 'insert', 'move', 'remove', 'reinsert' ] );\n\n\tthis.listenTo(\n\t\tthis.root.document,\n\t\t'change',\n\t\t( event, type, changes ) => {\n\t\t\tif ( supportedTypes.has( type ) ) {\n\t\t\t\ttransform.call( this, type, changes.range, changes.sourcePosition );\n\t\t\t}\n\t\t},\n\t\t{ priority: 'high' }\n\t);\n}\n\n/**\n * Updates this position accordingly to the updates applied to the model. Bases on change events.\n *\n * @ignore\n * @private\n * @method transform\n * @param {String} type Type of changes applied to the Tree Model.\n * @param {module:engine/model/range~Range} range Range containing the result of applied change.\n * @param {module:engine/model/position~Position} [position] Additional position parameter provided by some change events.\n */\nfunction transform( type, range, position ) {\n\t/*jshint validthis: true */\n\n\tlet howMany = range.end.offset - range.start.offset;\n\tlet transformed;\n\n\tswitch ( type ) {\n\t\tcase 'insert':\n\t\t\tlet insertBefore = this.stickiness == 'sticksToNext';\n\t\t\ttransformed = this._getTransformedByInsertion( range.start, howMany, insertBefore );\n\t\t\tbreak;\n\n\t\tcase 'move':\n\t\tcase 'remove':\n\t\tcase 'reinsert':\n\t\t\tlet originalRange = Range.createFromPositionAndShift( position, howMany );\n\n\t\t\tlet gotMoved = originalRange.containsPosition( this ) ||\n\t\t\t\t( originalRange.start.isEqual( this ) && this.stickiness == 'sticksToNext' ) ||\n\t\t\t\t( originalRange.end.isEqual( this ) && this.stickiness == 'sticksToPrevious' );\n\n\t\t\t// We can't use ._getTransformedByMove() because we have a different if-condition.\n\t\t\tif ( gotMoved ) {\n\t\t\t\ttransformed = this._getCombined( position, range.start );\n\t\t\t} else {\n\t\t\t\tlet insertBefore = this.stickiness == 'sticksToNext';\n\t\t\t\ttransformed = this._getTransformedByMove( position, range.start, howMany, insertBefore );\n\t\t\t}\n\t\t\tbreak;\n\t}\n\n\tif ( !this.isEqual( transformed ) ) {\n\t\tconst oldPosition = Position.createFromPosition( this );\n\n\t\tthis.path = transformed.path;\n\t\tthis.root = transformed.root;\n\n\t\tthis.fire( 'change', oldPosition );\n\t}\n}\n\nmix( LivePosition, EmitterMixin );\n\n/**\n * Enum representing how position is \"sticking\" with their neighbour nodes.\n * Possible values: `'sticksToNext'`, `'sticksToPrevious'`.\n *\n * @typedef {String} module:engine/model/position~PositionStickiness\n */\n\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/liveposition.js\n// module id = 163\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/domconverter\n */\n\n/* globals Range, Node, NodeFilter */\n\nimport ViewText from './text';\nimport ViewElement from './element';\nimport ViewPosition from './position';\nimport ViewRange from './range';\nimport ViewSelection from './selection';\nimport ViewDocumentFragment from './documentfragment';\nimport ViewTreeWalker from './treewalker';\nimport { BR_FILLER, INLINE_FILLER_LENGTH, isBlockFiller, isInlineFiller, startsWithFiller, getDataWithoutFiller } from './filler';\n\nimport indexOf from '@ckeditor/ckeditor5-utils/src/dom/indexof';\nimport getAncestors from '@ckeditor/ckeditor5-utils/src/dom/getancestors';\nimport getCommonAncestor from '@ckeditor/ckeditor5-utils/src/dom/getcommonancestor';\n\n/**\n * DomConverter is a set of tools to do transformations between DOM nodes and view nodes. It also handles\n * {@link module:engine/view/domconverter~DomConverter#bindElements binding} these nodes.\n *\n * DomConverter does not check which nodes should be rendered (use {@link module:engine/view/renderer~Renderer}), does not keep a\n * state of a tree nor keeps synchronization between tree view and DOM tree (use {@link module:engine/view/document~Document}).\n *\n * DomConverter keeps DOM elements to View element bindings, so when the converter will be destroyed, the binding will\n * be lost. Two converters will keep separate binding maps, so one tree view can be bound with two DOM trees.\n */\nexport default class DomConverter {\n\t/**\n\t * Creates DOM converter.\n\t *\n\t * @param {Object} options Object with configuration options.\n\t * @param {Function} [options.blockFiller=module:engine/view/filler~BR_FILLER] Block filler creator.\n\t */\n\tconstructor( options = {} ) {\n\t\t// Using WeakMap prevent memory leaks: when the converter will be destroyed all referenced between View and DOM\n\t\t// will be removed. Also because it is a *Weak*Map when both view and DOM elements will be removed referenced\n\t\t// will be also removed, isn't it brilliant?\n\t\t//\n\t\t// Yes, PJ. It is.\n\t\t//\n\t\t// You guys so smart.\n\t\t//\n\t\t// I've been here. Seen stuff. Afraid of code now.\n\n\t\t/**\n\t\t * Block {@link module:engine/view/filler filler} creator, which is used to create all block fillers during the\n\t\t * view to DOM conversion and to recognize block fillers during the DOM to view conversion.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Function} module:engine/view/domconverter~DomConverter#blockFiller\n\t\t */\n\t\tthis.blockFiller = options.blockFiller || BR_FILLER;\n\n\t\t/**\n\t\t * Tag names of DOM `Element`s which are considered pre-formatted elements.\n\t\t *\n\t\t * @member {Array.<String>} module:engine/view/domconverter~DomConverter#preElements\n\t\t */\n\t\tthis.preElements = [ 'pre' ];\n\n\t\t/**\n\t\t * Tag names of DOM `Element`s which are considered block elements.\n\t\t *\n\t\t * @member {Array.<String>} module:engine/view/domconverter~DomConverter#blockElements\n\t\t */\n\t\tthis.blockElements = [ 'p', 'div', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6' ];\n\n\t\t/**\n\t\t * DOM to View mapping.\n\t\t *\n\t\t * @private\n\t\t * @member {WeakMap} module:engine/view/domconverter~DomConverter#_domToViewMapping\n\t\t */\n\t\tthis._domToViewMapping = new WeakMap();\n\n\t\t/**\n\t\t * View to DOM mapping.\n\t\t *\n\t\t * @private\n\t\t * @member {WeakMap} module:engine/view/domconverter~DomConverter#_viewToDomMapping\n\t\t */\n\t\tthis._viewToDomMapping = new WeakMap();\n\n\t\t/**\n\t\t * Holds mapping between fake selection containers and corresponding view selections.\n\t\t *\n\t\t * @private\n\t\t * @member {WeakMap} module:engine/view/domconverter~DomConverter#_fakeSelectionMapping\n\t\t */\n\t\tthis._fakeSelectionMapping = new WeakMap();\n\t}\n\n\t/**\n\t * Binds given DOM element that represents fake selection to {@link module:engine/view/selection~Selection view selection}.\n\t * View selection copy is stored and can be retrieved by {@link module:engine/view/domconverter~DomConverter#fakeSelectionToView} method.\n\t *\n\t * @param {HTMLElement} domElement\n\t * @param {module:engine/view/selection~Selection} viewSelection\n\t */\n\tbindFakeSelection( domElement, viewSelection ) {\n\t\tthis._fakeSelectionMapping.set( domElement, ViewSelection.createFromSelection( viewSelection ) );\n\t}\n\n\t/**\n\t * Returns {@link module:engine/view/selection~Selection view selection} instance corresponding to given DOM element that represents fake\n\t * selection. Returns `undefined` if binding to given DOM element does not exists.\n\t *\n\t * @param {HTMLElement} domElement\n\t * @returns {module:engine/view/selection~Selection|undefined}\n\t */\n\tfakeSelectionToView( domElement ) {\n\t\treturn this._fakeSelectionMapping.get( domElement );\n\t}\n\n\t/**\n\t * Binds DOM and View elements, so it will be possible to get corresponding elements using\n\t * {@link module:engine/view/domconverter~DomConverter#getCorrespondingViewElement getCorrespondingViewElement} and\n\t * {@link module:engine/view/domconverter~DomConverter#getCorrespondingDomElement getCorrespondingDomElement}.\n\t *\n\t * @param {HTMLElement} domElement DOM element to bind.\n\t * @param {module:engine/view/element~Element} viewElement View element to bind.\n\t */\n\tbindElements( domElement, viewElement ) {\n\t\tthis._domToViewMapping.set( domElement, viewElement );\n\t\tthis._viewToDomMapping.set( viewElement, domElement );\n\t}\n\n\t/**\n\t * Unbinds given `domElement` from the view element it was bound to. Unbinding is deep, meaning that all children of\n\t * `domElement` will be unbound too.\n\t *\n\t * @param {HTMLElement} domElement DOM element to unbind.\n\t */\n\tunbindDomElement( domElement ) {\n\t\tconst viewElement = this._domToViewMapping.get( domElement );\n\n\t\tif ( viewElement ) {\n\t\t\tthis._domToViewMapping.delete( domElement );\n\t\t\tthis._viewToDomMapping.delete( viewElement );\n\n\t\t\tfor ( let child of domElement.childNodes ) {\n\t\t\t\tthis.unbindDomElement( child );\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Binds DOM and View document fragments, so it will be possible to get corresponding document fragments using\n\t * {@link module:engine/view/domconverter~DomConverter#getCorrespondingViewDocumentFragment getCorrespondingViewDocumentFragment} and\n\t * {@link module:engine/view/domconverter~DomConverter#getCorrespondingDomDocumentFragment getCorrespondingDomDocumentFragment}.\n\t *\n\t * @param {DocumentFragment} domFragment DOM document fragment to bind.\n\t * @param {module:engine/view/documentfragment~DocumentFragment} viewFragment View document fragment to bind.\n\t */\n\tbindDocumentFragments( domFragment, viewFragment ) {\n\t\tthis._domToViewMapping.set( domFragment, viewFragment );\n\t\tthis._viewToDomMapping.set( viewFragment, domFragment );\n\t}\n\n\t/**\n\t * Converts view to DOM. For all text nodes, not bound elements and document fragments new items will\n\t * be created. For bound elements and document fragments function will return corresponding items.\n\t *\n\t * @param {module:engine/view/node~Node|module:engine/view/documentfragment~DocumentFragment} viewNode View node or document fragment to\n\t * transform.\n\t * @param {Document} domDocument Document which will be used to create DOM nodes.\n\t * @param {Object} [options] Conversion options.\n\t * @param {Boolean} [options.bind=false] Determines whether new elements will be bound.\n\t * @param {Boolean} [options.withChildren=true] If true node's and document fragment's children  will be converted too.\n\t * @returns {Node|DocumentFragment} Converted node or DocumentFragment.\n\t */\n\tviewToDom( viewNode, domDocument, options = {} ) {\n\t\tif ( viewNode.is( 'text' ) ) {\n\t\t\tconst textData = this._processDataFromViewText( viewNode );\n\n\t\t\treturn domDocument.createTextNode( textData );\n\t\t} else {\n\t\t\tif ( this.getCorrespondingDom( viewNode ) ) {\n\t\t\t\treturn this.getCorrespondingDom( viewNode );\n\t\t\t}\n\n\t\t\tlet domElement;\n\n\t\t\tif ( viewNode.is( 'documentFragment' ) ) {\n\t\t\t\t// Create DOM document fragment.\n\t\t\t\tdomElement = domDocument.createDocumentFragment();\n\n\t\t\t\tif ( options.bind ) {\n\t\t\t\t\tthis.bindDocumentFragments( domElement, viewNode );\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\t// Create DOM element.\n\t\t\t\tdomElement = domDocument.createElement( viewNode.name );\n\n\t\t\t\tif ( options.bind ) {\n\t\t\t\t\tthis.bindElements( domElement, viewNode );\n\t\t\t\t}\n\n\t\t\t\t// Copy element's attributes.\n\t\t\t\tfor ( let key of viewNode.getAttributeKeys() ) {\n\t\t\t\t\tdomElement.setAttribute( key, viewNode.getAttribute( key ) );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tif ( options.withChildren || options.withChildren === undefined ) {\n\t\t\t\tfor ( let child of this.viewChildrenToDom( viewNode, domDocument, options ) ) {\n\t\t\t\t\tdomElement.appendChild( child );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn domElement;\n\t\t}\n\t}\n\n\t/**\n\t * Converts children of the view element to DOM using {@link module:engine/view/domconverter~DomConverter#viewToDom} method.\n\t * Additionally this method adds block {@link module:engine/view/filler filler} to the list of children, if needed.\n\t *\n\t * @param {module:engine/view/element~Element|module:engine/view/documentfragment~DocumentFragment} viewElement Parent view element.\n\t * @param {Document} domDocument Document which will be used to create DOM nodes.\n\t * @param {Object} options See {@link module:engine/view/domconverter~DomConverter#viewToDom} options parameter.\n\t * @returns {Iterable.<Node>} DOM nodes.\n\t */\n\t*viewChildrenToDom( viewElement, domDocument, options = {} ) {\n\t\tlet fillerPositionOffset = viewElement.getFillerOffset && viewElement.getFillerOffset();\n\t\tlet offset = 0;\n\n\t\tfor ( let childView of viewElement.getChildren() ) {\n\t\t\tif ( fillerPositionOffset === offset ) {\n\t\t\t\tyield this.blockFiller( domDocument );\n\t\t\t}\n\n\t\t\tyield this.viewToDom( childView, domDocument, options );\n\n\t\t\toffset++;\n\t\t}\n\n\t\tif ( fillerPositionOffset === offset ) {\n\t\t\tyield this.blockFiller( domDocument );\n\t\t}\n\t}\n\n\t/**\n\t * Converts view {@link module:engine/view/range~Range} to DOM range.\n\t * Inline and block {@link module:engine/view/filler fillers} are handled during the conversion.\n\t *\n\t * @param {module:engine/view/range~Range} viewRange View range.\n\t * @returns {Range} DOM range.\n\t */\n\tviewRangeToDom( viewRange ) {\n\t\tconst domStart = this.viewPositionToDom( viewRange.start );\n\t\tconst domEnd = this.viewPositionToDom( viewRange.end );\n\n\t\tconst domRange = new Range();\n\t\tdomRange.setStart( domStart.parent, domStart.offset );\n\t\tdomRange.setEnd( domEnd.parent, domEnd.offset );\n\n\t\treturn domRange;\n\t}\n\n\t/**\n\t * Converts view {@link module:engine/view/position~Position} to DOM parent and offset.\n\t *\n\t * Inline and block {@link module:engine/view/filler fillers} are handled during the conversion.\n\t * If the converted position is directly before inline filler it is moved inside the filler.\n\t *\n\t * @param {module:engine/view/position~Position} viewPosition View position.\n\t * @returns {Object|null} position DOM position or `null` if view position could not be converted to DOM.\n\t * @returns {Node} position.parent DOM position parent.\n\t * @returns {Number} position.offset DOM position offset.\n\t */\n\tviewPositionToDom( viewPosition ) {\n\t\tconst viewParent = viewPosition.parent;\n\n\t\tif ( viewParent.is( 'text' ) ) {\n\t\t\tconst domParent = this.getCorrespondingDomText( viewParent );\n\n\t\t\tif ( !domParent ) {\n\t\t\t\t// Position is in a view text node that has not been rendered to DOM yet.\n\t\t\t\treturn null;\n\t\t\t}\n\n\t\t\tlet offset = viewPosition.offset;\n\n\t\t\tif ( startsWithFiller( domParent ) ) {\n\t\t\t\toffset += INLINE_FILLER_LENGTH;\n\t\t\t}\n\n\t\t\treturn { parent: domParent, offset: offset };\n\t\t} else {\n\t\t\t// viewParent is instance of ViewElement.\n\t\t\tlet domParent, domBefore, domAfter;\n\n\t\t\tif ( viewPosition.offset === 0 ) {\n\t\t\t\tdomParent = this.getCorrespondingDom( viewPosition.parent );\n\n\t\t\t\tif ( !domParent ) {\n\t\t\t\t\t// Position is in a view element that has not been rendered to DOM yet.\n\t\t\t\t\treturn null;\n\t\t\t\t}\n\n\t\t\t\tdomAfter = domParent.childNodes[ 0 ];\n\t\t\t} else {\n\t\t\t\tdomBefore = this.getCorrespondingDom( viewPosition.nodeBefore );\n\n\t\t\t\tif ( !domBefore ) {\n\t\t\t\t\t// Position is after a view element that has not been rendered to DOM yet.\n\t\t\t\t\treturn null;\n\t\t\t\t}\n\n\t\t\t\tdomParent = domBefore.parentNode;\n\t\t\t\tdomAfter = domBefore.nextSibling;\n\t\t\t}\n\n\t\t\t// If there is an inline filler at position return position inside the filler. We should never return\n\t\t\t// the position before the inline filler.\n\t\t\tif ( this.isText( domAfter ) && startsWithFiller( domAfter ) ) {\n\t\t\t\treturn { parent: domAfter, offset: INLINE_FILLER_LENGTH };\n\t\t\t}\n\n\t\t\tconst offset = domBefore ? indexOf( domBefore ) + 1 : 0;\n\n\t\t\treturn { parent: domParent, offset: offset };\n\t\t}\n\t}\n\n\t/**\n\t * Converts DOM to view. For all text nodes, not bound elements and document fragments new items will\n\t * be created. For bound elements and document fragments function will return corresponding items. For\n\t * {@link module:engine/view/filler fillers} `null` will be returned.\n\t *\n\t * @param {Node|DocumentFragment} domNode DOM node or document fragment to transform.\n\t * @param {Object} [options] Conversion options.\n\t * @param {Boolean} [options.bind=false] Determines whether new elements will be bound.\n\t * @param {Boolean} [options.withChildren=true] If `true`, node's and document fragment's children will be converted too.\n\t * @param {Boolean} [options.keepOriginalCase=false] If `false`, node's tag name will be converter to lower case.\n\t * @returns {module:engine/view/node~Node|module:engine/view/documentfragment~DocumentFragment|null} Converted node or document fragment or\n\t * `null`\n\t * if DOM node is a {@link module:engine/view/filler filler} or the given node is an empty text node.\n\t */\n\tdomToView( domNode, options = {} ) {\n\t\tif ( isBlockFiller( domNode, this.blockFiller )  ) {\n\t\t\treturn null;\n\t\t}\n\n\t\tif ( this.isText( domNode ) ) {\n\t\t\tif ( isInlineFiller( domNode ) ) {\n\t\t\t\treturn null;\n\t\t\t} else {\n\t\t\t\tconst textData = this._processDataFromDomText( domNode );\n\n\t\t\t\treturn textData === '' ? null : new ViewText( textData );\n\t\t\t}\n\t\t} else {\n\t\t\tif ( this.getCorrespondingView( domNode ) ) {\n\t\t\t\treturn this.getCorrespondingView( domNode );\n\t\t\t}\n\n\t\t\tlet viewElement;\n\n\t\t\tif ( this.isDocumentFragment( domNode ) ) {\n\t\t\t\t// Create view document fragment.\n\t\t\t\tviewElement = new ViewDocumentFragment();\n\n\t\t\t\tif ( options.bind ) {\n\t\t\t\t\tthis.bindDocumentFragments( domNode, viewElement );\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\t// Create view element.\n\t\t\t\tconst viewName = options.keepOriginalCase ? domNode.tagName : domNode.tagName.toLowerCase();\n\t\t\t\tviewElement = new ViewElement( viewName );\n\n\t\t\t\tif ( options.bind ) {\n\t\t\t\t\tthis.bindElements( domNode, viewElement );\n\t\t\t\t}\n\n\t\t\t\t// Copy element's attributes.\n\t\t\t\tconst attrs = domNode.attributes;\n\n\t\t\t\tfor ( let i = attrs.length - 1; i >= 0; i-- ) {\n\t\t\t\t\tviewElement.setAttribute( attrs[ i ].name, attrs[ i ].value );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tif ( options.withChildren || options.withChildren === undefined ) {\n\t\t\t\tfor ( let child of this.domChildrenToView( domNode, options ) ) {\n\t\t\t\t\tviewElement.appendChildren( child );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn viewElement;\n\t\t}\n\t}\n\n\t/**\n\t * Converts children of the DOM element to view nodes using {@link module:engine/view/domconverter~DomConverter#domToView} method.\n\t * Additionally this method omits block {@link module:engine/view/filler filler}, if it exists in the DOM parent.\n\t *\n\t * @param {HTMLElement} domElement Parent DOM element.\n\t * @param {Object} options See {@link module:engine/view/domconverter~DomConverter#domToView} options parameter.\n\t * @returns {Iterable.<module:engine/view/node~Node>} View nodes.\n\t */\n\t*domChildrenToView( domElement, options = {} ) {\n\t\tfor ( let i = 0; i < domElement.childNodes.length; i++ ) {\n\t\t\tconst domChild = domElement.childNodes[ i ];\n\t\t\tconst viewChild = this.domToView( domChild, options );\n\n\t\t\tif ( viewChild !== null ) {\n\t\t\t\tyield viewChild;\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Converts DOM selection to view {@link module:engine/view/selection~Selection}.\n\t * Ranges which cannot be converted will be omitted.\n\t *\n\t * @param {Selection} domSelection DOM selection.\n\t * @returns {module:engine/view/selection~Selection} View selection.\n\t */\n\tdomSelectionToView( domSelection ) {\n\t\t// DOM selection might be placed in fake selection container.\n\t\t// If container contains fake selection - return corresponding view selection.\n\t\tif ( domSelection.rangeCount === 1 ) {\n\t\t\tlet container = domSelection.getRangeAt( 0 ).startContainer;\n\n\t\t\t// The DOM selection might be moved to the text node inside the fake selection container.\n\t\t\tif ( this.isText( container ) ) {\n\t\t\t\tcontainer = container.parentNode;\n\t\t\t}\n\n\t\t\tconst viewSelection = this.fakeSelectionToView( container );\n\n\t\t\tif ( viewSelection ) {\n\t\t\t\treturn viewSelection;\n\t\t\t}\n\t\t}\n\n\t\tconst viewSelection = new ViewSelection();\n\t\tconst isBackward = this.isDomSelectionBackward( domSelection );\n\n\t\tfor ( let i = 0; i < domSelection.rangeCount; i++ ) {\n\t\t\t// DOM Range have correct start and end, no matter what is the DOM Selection direction. So we don't have to fix anything.\n\t\t\tconst domRange = domSelection.getRangeAt( i );\n\t\t\tconst viewRange = this.domRangeToView( domRange );\n\n\t\t\tif ( viewRange ) {\n\t\t\t\tviewSelection.addRange( viewRange, isBackward );\n\t\t\t}\n\t\t}\n\n\t\treturn viewSelection;\n\t}\n\n\t/**\n\t * Converts DOM Range to view {@link module:engine/view/range~Range}.\n\t * If the start or end position can not be converted `null` is returned.\n\t *\n\t * @param {Range} domRange DOM range.\n\t * @returns {module:engine/view/range~Range|null} View range.\n\t */\n\tdomRangeToView( domRange ) {\n\t\tconst viewStart = this.domPositionToView( domRange.startContainer, domRange.startOffset );\n\t\tconst viewEnd = this.domPositionToView( domRange.endContainer, domRange.endOffset );\n\n\t\tif ( viewStart && viewEnd ) {\n\t\t\treturn new ViewRange( viewStart, viewEnd );\n\t\t}\n\n\t\treturn null;\n\t}\n\n\t/**\n\t * Converts DOM parent and offset to view {@link module:engine/view/position~Position}.\n\t *\n\t * If the position is inside a {@link module:engine/view/filler filler} which has no corresponding view node,\n\t * position of the filler will be converted and returned.\n\t *\n\t * If structures are too different and it is not possible to find corresponding position then `null` will be returned.\n\t *\n\t * @param {Node} domParent DOM position parent.\n\t * @param {Number} domOffset DOM position offset.\n\t * @returns {module:engine/view/position~Position} viewPosition View position.\n\t */\n\tdomPositionToView( domParent, domOffset ) {\n\t\tif ( isBlockFiller( domParent, this.blockFiller ) ) {\n\t\t\treturn this.domPositionToView( domParent.parentNode, indexOf( domParent ) );\n\t\t}\n\n\t\tif ( this.isText( domParent ) ) {\n\t\t\tif ( isInlineFiller( domParent ) ) {\n\t\t\t\treturn this.domPositionToView( domParent.parentNode, indexOf( domParent ) );\n\t\t\t}\n\n\t\t\tconst viewParent = this.getCorrespondingViewText( domParent );\n\t\t\tlet offset = domOffset;\n\n\t\t\tif ( !viewParent ) {\n\t\t\t\treturn null;\n\t\t\t}\n\n\t\t\tif ( startsWithFiller( domParent ) ) {\n\t\t\t\toffset -= INLINE_FILLER_LENGTH;\n\t\t\t\toffset = offset < 0 ? 0 : offset;\n\t\t\t}\n\n\t\t\treturn new ViewPosition( viewParent, offset );\n\t\t}\n\t\t// domParent instanceof HTMLElement.\n\t\telse {\n\t\t\tif ( domOffset === 0 ) {\n\t\t\t\tconst viewParent = this.getCorrespondingView( domParent );\n\n\t\t\t\tif ( viewParent ) {\n\t\t\t\t\treturn new ViewPosition( viewParent, 0 );\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\tconst viewBefore = this.getCorrespondingView( domParent.childNodes[ domOffset - 1 ] );\n\n\t\t\t\t// TODO #663\n\t\t\t\tif ( viewBefore && viewBefore.parent ) {\n\t\t\t\t\treturn new ViewPosition( viewBefore.parent, viewBefore.index + 1 );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn null;\n\t\t}\n\t}\n\n\t/**\n\t * Gets corresponding view item. This function use\n\t * {@link module:engine/view/domconverter~DomConverter#getCorrespondingViewElement getCorrespondingViewElement}\n\t * for elements, {@link  module:engine/view/domconverter~DomConverter#getCorrespondingViewText getCorrespondingViewText} for text\n\t * nodes and {@link module:engine/view/domconverter~DomConverter#getCorrespondingViewDocumentFragment getCorrespondingViewDocumentFragment}\n\t * for document fragments.\n\t *\n\t * Note that for the block or inline {@link module:engine/view/filler filler} this method returns `null`.\n\t *\n\t * @param {Node|DocumentFragment} domNode DOM node or document fragment.\n\t * @returns {module:engine/view/node~Node|module:engine/view/documentfragment~DocumentFragment|null} Corresponding view item.\n\t */\n\tgetCorrespondingView( domNode ) {\n\t\tif ( this.isElement( domNode ) ) {\n\t\t\treturn this.getCorrespondingViewElement( domNode );\n\t\t} else if ( this.isDocumentFragment( domNode ) ) {\n\t\t\treturn this.getCorrespondingViewDocumentFragment( domNode );\n\t\t} else if ( this.isText( domNode ) ) {\n\t\t\treturn this.getCorrespondingViewText( domNode );\n\t\t}\n\n\t\treturn null;\n\t}\n\n\t/**\n\t * Gets corresponding view element. Returns element if an view element was\n\t * {@link module:engine/view/domconverter~DomConverter#bindElements bound} to the given DOM element or `null` otherwise.\n\t *\n\t * @param {HTMLElement} domElement DOM element.\n\t * @returns {module:engine/view/element~Element|null} Corresponding element or `null` if no element was bound.\n\t */\n\tgetCorrespondingViewElement( domElement ) {\n\t\treturn this._domToViewMapping.get( domElement );\n\t}\n\n\t/**\n\t * Gets corresponding view document fragment. Returns document fragment if an view element was\n\t * {@link module:engine/view/domconverter~DomConverter#bindDocumentFragments bound} to the given DOM fragment or `null` otherwise.\n\t *\n\t * @param {DocumentFragment} domFragment DOM element.\n\t * @returns {module:engine/view/documentfragment~DocumentFragment|null} Corresponding document fragment or `null` if none element was\n\t * bound.\n\t */\n\tgetCorrespondingViewDocumentFragment( domFragment ) {\n\t\treturn this._domToViewMapping.get( domFragment );\n\t}\n\n\t/**\n\t * Gets corresponding text node. Text nodes are not {@link module:engine/view/domconverter~DomConverter#bindElements bound},\n\t * corresponding text node is returned based on the sibling or parent.\n\t *\n\t * If the directly previous sibling is a {@link module:engine/view/domconverter~DomConverter#bindElements bound} element, it is used\n\t * to find the corresponding text node.\n\t *\n\t * If this is a first child in the parent and the parent is a {@link module:engine/view/domconverter~DomConverter#bindElements bound}\n\t * element, it is used to find the corresponding text node.\n\t *\n\t * Otherwise `null` is returned.\n\t *\n\t * Note that for the block or inline {@link module:engine/view/filler filler} this method returns `null`.\n\t *\n\t * @param {Text} domText DOM text node.\n\t * @returns {module:engine/view/text~Text|null} Corresponding view text node or `null`, if it was not possible to find a\n\t * corresponding node.\n\t */\n\tgetCorrespondingViewText( domText ) {\n\t\tif ( isInlineFiller( domText ) ) {\n\t\t\treturn null;\n\t\t}\n\n\t\tconst previousSibling = domText.previousSibling;\n\n\t\t// Try to use previous sibling to find the corresponding text node.\n\t\tif ( previousSibling ) {\n\t\t\tif ( !( this.isElement( previousSibling ) ) ) {\n\t\t\t\t// The previous is text or comment.\n\t\t\t\treturn null;\n\t\t\t}\n\n\t\t\tconst viewElement = this.getCorrespondingViewElement( previousSibling );\n\n\t\t\tif ( viewElement ) {\n\t\t\t\tconst nextSibling = viewElement.nextSibling;\n\n\t\t\t\t// It might be filler which has no corresponding view node.\n\t\t\t\tif ( nextSibling instanceof ViewText ) {\n\t\t\t\t\treturn viewElement.nextSibling;\n\t\t\t\t} else {\n\t\t\t\t\treturn null;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t\t// Try to use parent to find the corresponding text node.\n\t\telse {\n\t\t\tconst viewElement = this.getCorrespondingViewElement( domText.parentNode );\n\n\t\t\tif ( viewElement ) {\n\t\t\t\tconst firstChild = viewElement.getChild( 0 );\n\n\t\t\t\t// It might be filler which has no corresponding view node.\n\t\t\t\tif ( firstChild instanceof ViewText ) {\n\t\t\t\t\treturn firstChild;\n\t\t\t\t} else {\n\t\t\t\t\treturn null;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn null;\n\t}\n\n\t/**\n\t * Gets corresponding DOM item. This function uses\n\t * {@link module:engine/view/domconverter~DomConverter#getCorrespondingDomElement getCorrespondingDomElement} for\n\t * elements, {@link module:engine/view/domconverter~DomConverter#getCorrespondingDomText getCorrespondingDomText} for text nodes\n\t * and {@link module:engine/view/domconverter~DomConverter#getCorrespondingDomDocumentFragment getCorrespondingDomDocumentFragment}\n\t * for document fragments.\n\t *\n\t * @param {module:engine/view/node~Node|module:engine/view/documentfragment~DocumentFragment} viewNode View node or document fragment.\n\t * @returns {Node|DocumentFragment|null} Corresponding DOM node or document fragment.\n\t */\n\tgetCorrespondingDom( viewNode ) {\n\t\tif ( viewNode instanceof ViewElement ) {\n\t\t\treturn this.getCorrespondingDomElement( viewNode );\n\t\t} else if ( viewNode instanceof ViewDocumentFragment ) {\n\t\t\treturn this.getCorrespondingDomDocumentFragment( viewNode );\n\t\t} else if ( viewNode instanceof ViewText ) {\n\t\t\treturn this.getCorrespondingDomText( viewNode );\n\t\t}\n\n\t\treturn null;\n\t}\n\n\t/**\n\t * Gets corresponding DOM element. Returns element if an DOM element was\n\t * {@link module:engine/view/domconverter~DomConverter#bindElements bound} to the given view element or `null` otherwise.\n\t *\n\t * @param {module:engine/view/element~Element} viewElement View element.\n\t * @returns {HTMLElement|null} Corresponding element or `null` if none element was bound.\n\t */\n\tgetCorrespondingDomElement( viewElement ) {\n\t\treturn this._viewToDomMapping.get( viewElement );\n\t}\n\n\t/**\n\t * Gets corresponding DOM document fragment. Returns document fragment if an DOM element was\n\t * {@link module:engine/view/domconverter~DomConverter#bindDocumentFragments bound} to the given view document fragment or `null`\n\t * otherwise.\n\t *\n\t * @param {module:engine/view/documentfragment~DocumentFragment} viewDocumentFragment View document fragment.\n\t * @returns {DocumentFragment|null} Corresponding document fragment or `null` if no fragment was bound.\n\t */\n\tgetCorrespondingDomDocumentFragment( viewDocumentFragment ) {\n\t\treturn this._viewToDomMapping.get( viewDocumentFragment );\n\t}\n\n\t/**\n\t * Gets corresponding text node. Text nodes are not {@link module:engine/view/domconverter~DomConverter#bindElements bound},\n\t * corresponding text node is returned based on the sibling or parent.\n\t *\n\t * If the directly previous sibling is a {@link module:engine/view/domconverter~DomConverter#bindElements bound} element, it is used\n\t * to find the corresponding text node.\n\t *\n\t * If this is a first child in the parent and the parent is a {@link module:engine/view/domconverter~DomConverter#bindElements bound}\n\t * element, it is used to find the corresponding text node.\n\t *\n\t * Otherwise `null` is returned.\n\t *\n\t * @param {module:engine/view/text~Text} viewText View text node.\n\t * @returns {Text|null} Corresponding DOM text node or `null`, if it was not possible to find a corresponding node.\n\t */\n\tgetCorrespondingDomText( viewText ) {\n\t\tconst previousSibling = viewText.previousSibling;\n\n\t\t// Try to use previous sibling to find the corresponding text node.\n\t\tif ( previousSibling && this.getCorrespondingDom( previousSibling ) ) {\n\t\t\treturn this.getCorrespondingDom( previousSibling ).nextSibling;\n\t\t}\n\n\t\t// If this is a first node, try to use parent to find the corresponding text node.\n\t\tif ( !previousSibling && viewText.parent && this.getCorrespondingDom( viewText.parent ) ) {\n\t\t\treturn this.getCorrespondingDom( viewText.parent ).childNodes[ 0 ];\n\t\t}\n\n\t\treturn null;\n\t}\n\n\t/**\n\t * Focuses DOM editable that is corresponding to provided {@link module:engine/view/editableelement~EditableElement EditableElement}.\n\t *\n\t * @param {module:engine/view/editableelement~EditableElement} viewEditable\n\t */\n\tfocus( viewEditable ) {\n\t\tconst domEditable = this.getCorrespondingDomElement( viewEditable );\n\n\t\tif ( domEditable && domEditable.ownerDocument.activeElement !== domEditable ) {\n\t\t\tdomEditable.focus();\n\t\t}\n\t}\n\n\t/**\n\t * Returns `true` when `node.nodeType` equals `Node.TEXT_NODE`.\n\t *\n\t * @param {Node} node Node to check.\n\t * @returns {Boolean}\n\t */\n\tisText( node ) {\n\t\treturn node && node.nodeType == Node.TEXT_NODE;\n\t}\n\n\t/**\n\t * Returns `true` when `node.nodeType` equals `Node.ELEMENT_NODE`.\n\t *\n\t * @param {Node} node Node to check.\n\t * @returns {Boolean}\n\t */\n\tisElement( node ) {\n\t\treturn node && node.nodeType == Node.ELEMENT_NODE;\n\t}\n\n\t/**\n\t * Returns `true` when `node.nodeType` equals `Node.DOCUMENT_FRAGMENT_NODE`.\n\t *\n\t * @param {Node} node Node to check.\n\t * @returns {Boolean}\n\t */\n\tisDocumentFragment( node ) {\n\t\treturn node && node.nodeType == Node.DOCUMENT_FRAGMENT_NODE;\n\t}\n\n\t/**\n\t * Returns `true` if given selection is a backward selection, that is, if it's `focus` is before `anchor`.\n\t *\n\t * @param {Selection} DOM Selection instance to check.\n\t * @returns {Boolean}\n\t */\n\tisDomSelectionBackward( selection ) {\n\t\tif ( selection.isCollapsed ) {\n\t\t\treturn false;\n\t\t}\n\n\t\t// Since it takes multiple lines of code to check whether a \"DOM Position\" is before/after another \"DOM Position\",\n\t\t// we will use the fact that range will collapse if it's end is before it's start.\n\t\tconst range = new Range();\n\n\t\trange.setStart( selection.anchorNode, selection.anchorOffset );\n\t\trange.setEnd( selection.focusNode, selection.focusOffset );\n\n\t\tconst backward = range.collapsed;\n\n\t\trange.detach();\n\n\t\treturn backward;\n\t}\n\n\t/**\n\t * Takes text data from given {@link module:engine/view/text~Text#data} and processes it so it is correctly displayed in DOM.\n\t *\n\t * Following changes are done:\n\t * * multiple spaces are replaced to a chain of spaces and `&nbsp;`,\n\t * * space at the beginning of the text node is changed to `&nbsp;` if it is a first text node in it's container\n\t * element or if previous text node ends by space character,\n\t * * space at the end of the text node is changed to `&nbsp;` if it is a last text node in it's container.\n\t *\n\t * @private\n\t * @param {module:engine/view/text~Text} node View text node to process.\n\t * @returns {String} Processed text data.\n\t */\n\t_processDataFromViewText( node ) {\n\t\tlet data = node.data;\n\n\t\t// If any of node ancestors has a name which is in `preElements` array, then currently processed\n\t\t// view text node is (will be) in preformatted element. We should not change whitespaces then.\n\t\tif ( node.getAncestors().some( ( parent ) => this.preElements.includes( parent.name ) ) )  {\n\t\t\treturn data;\n\t\t}\n\n\t\tconst prevNode = this._getTouchingViewTextNode( node, false );\n\t\tconst nextNode = this._getTouchingViewTextNode( node, true );\n\n\t\t// Second part of text data, from the space after the last non-space character to the end.\n\t\t// We separate `textEnd` and `textStart` because `textEnd` needs some special handling.\n\t\tlet textEnd = data.match( / *$/ )[ 0 ];\n\t\t// First part of data, between first and last part of data.\n\t\tlet textStart = data.substr( 0, data.length - textEnd.length );\n\n\t\t// If previous text node does not exist or it ends by space character, replace space character at the beginning of text.\n\t\t// ` x`\t\t\t-> `_x`\n\t\t// `  x`\t\t-> `_ x`\n\t\t// `   x`\t\t-> `_  x`\n\t\tif ( !prevNode || prevNode.data.charAt( prevNode.data.length - 1 ) == ' ' ) {\n\t\t\ttextStart = textStart.replace( /^ /, '\\u00A0' );\n\t\t}\n\n\t\t// Multiple consecutive spaces. Change them to ` &nbsp;` pairs.\n\t\t// `_x  x`\t\t-> `_x _x`\n\t\t// `_ x  x`\t\t-> `_ x _x`\n\t\t// `_  x  x`\t-> `_ _x _x`\n\t\t// `_  x   x`\t-> `_ _x _ x`\n\t\t// `_  x    x`\t-> `_ _x _ _x`\n\t\t// `_   x    x` -> `_ _ x _ _x`\n\t\ttextStart = textStart.replace( /  /g, ' \\u00A0' );\n\n\t\t// Process `textEnd` only if there is anything to process.\n\t\tif ( textEnd.length > 0 ) {\n\t\t\t// (1) We need special treatment for the last part of text node, it has to end on `&nbsp;`, not space:\n\t\t\t// `x `\t\t-> `x_`\n\t\t\t// `x  `\t-> `x _`\n\t\t\t// `x   `\t-> `x_ _`\n\t\t\t// `x    `\t-> `x _ _`\n\t\t\t// (2) Different case when there is a node after:\n\t\t\t// `x <b>b</b>`\t\t-> `x <b>b</b>`\n\t\t\t// `x  <b>b</b>`\t-> `x _<b>b</b>`\n\t\t\t// `x   <b>b</b>`\t-> `x _ <b>b</b>`\n\t\t\t// `x    <b>b</b>`\t-> `x _ _<b>b</b>`\n\t\t\t// (3) But different, when that node starts by &nbsp; (or space that will be converted to &nbsp;):\n\t\t\t// `x <b>_b</b>`\t-> `x <b>_b</b>`\n\t\t\t// `x  <b>_b</b>`\t-> `x_ <b>_b</b>`\n\t\t\t// `x   <b>_b</b>`\t-> `x _ <b>_b</b>`\n\t\t\t// `x    <b>_b</b>`\t-> `x_ _ <b>_b</b>`\n\t\t\t// Let's assume that starting from space is normal behavior, because starting from &nbsp; is a less frequent case.\n\t\t\tlet textEndStartsFromNbsp = false;\n\n\t\t\tif ( !nextNode ) {\n\t\t\t\t// (1)\n\t\t\t\tif ( textEnd.length % 2 ) {\n\t\t\t\t\ttextEndStartsFromNbsp = true;\n\t\t\t\t}\n\t\t\t} else if ( nextNode.data.charAt( 0 ) == ' ' || nextNode.data.charAt( 0 ) == '\\u00A0' ) {\n\t\t\t\t// (3)\n\t\t\t\tif ( textEnd.length % 2 === 0 ) {\n\t\t\t\t\ttextEndStartsFromNbsp = true;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tif ( textEndStartsFromNbsp ) {\n\t\t\t\ttextEnd = '\\u00A0' + textEnd.substr( 0, textEnd.length - 1 );\n\t\t\t}\n\n\t\t\ttextEnd = textEnd.replace( /  /g, ' \\u00A0' );\n\t\t}\n\n\t\treturn textStart + textEnd;\n\t}\n\n\t/**\n\t * Helper function. For given {@link module:engine/view/text~Text view text node}, it finds previous or next sibling that is contained\n\t * in the same block element. If there is no such sibling, `null` is returned.\n\t *\n\t * @private\n\t * @param {module:engine/view/text~Text} node\n\t * @param {Boolean} getNext\n\t * @returns {module:engine/view/text~Text}\n\t */\n\t_getTouchingViewTextNode( node, getNext ) {\n\t\tif ( !node.parent ) {\n\t\t\treturn null;\n\t\t}\n\n\t\tconst treeWalker = new ViewTreeWalker( {\n\t\t\tstartPosition: getNext ? ViewPosition.createAfter( node ) : ViewPosition.createBefore( node ),\n\t\t\tdirection: getNext ? 'forward' : 'backward'\n\t\t} );\n\n\t\tfor ( let value of treeWalker ) {\n\t\t\tif ( value.item.is( 'containerElement' ) ) {\n\t\t\t\t// ViewContainerElement is found on a way to next ViewText node, so given `node` was first/last\n\t\t\t\t// text node in it's container element.\n\t\t\t\treturn null;\n\t\t\t} else if ( value.item.is( 'text' ) ) {\n\t\t\t\t// Found a text node in the same container element.\n\t\t\t\treturn value.item;\n\t\t\t}\n\t\t}\n\n\t\treturn null;\n\t}\n\n\t/**\n\t * Takes text data from native `Text` node and processes it to a correct {@link module:engine/view/text~Text view text node} data.\n\t *\n\t * Following changes are done:\n\t * * multiple whitespaces are replaced to a single space,\n\t * * space at the beginning of the text node is removed, if it is a first text node in it's container\n\t * element or if previous text node ends by space character,\n\t * * space at the end of the text node is removed, if it is a last text node in it's container.\n\t *\n\t * @param {Node} node DOM text node to process.\n\t * @returns {String} Processed data.\n\t * @private\n\t */\n\t_processDataFromDomText( node ) {\n\t\tlet data = getDataWithoutFiller( node );\n\n\t\tif ( _hasDomParentOfType( node, this.preElements ) ) {\n\t\t\treturn data;\n\t\t}\n\n\t\t// Change all consecutive whitespace characters to a single space character. That's how multiple whitespaces\n\t\t// are treated when rendered, so we normalize those whitespaces.\n\t\t// Note that &nbsp; (`\\u00A0`) should not be treated as a whitespace because it is rendered.\n\t\tdata = data.replace( /[^\\S\\u00A0]{2,}/g, ' ' );\n\n\t\tconst prevNode = this._getTouchingDomTextNode( node, false );\n\t\tconst nextNode = this._getTouchingDomTextNode( node, true );\n\n\t\t// If previous dom text node does not exist or it ends by whitespace character, remove space character from the beginning\n\t\t// of this text node. Such space character is treated as a whitespace.\n\t\tif ( !prevNode || /[^\\S\\u00A0]/.test( prevNode.data.charAt( prevNode.data.length - 1 ) ) ) {\n\t\t\tdata = data.replace( /^ /, '' );\n\t\t}\n\n\t\t// If next text node does not exist remove space character from the end of this text node.\n\t\tif ( !nextNode ) {\n\t\t\tdata = data.replace( / $/, '' );\n\t\t}\n\t\t// At this point we should have removed all whitespaces from DOM text data.\n\n\t\t// Now we have to change &nbsp; chars, that were in DOM text data because of rendering reasons, to spaces.\n\t\t// First, change all ` \\u00A0` pairs (space + &nbsp;) to two spaces. DOM converter changes two spaces from model/view as\n\t\t// ` \\u00A0` to ensure proper rendering. Since here we convert back, we recognize those pairs and change them\n\t\t// to `  ` which is what we expect to have in model/view.\n\t\tdata = data.replace( / \\u00A0/g, '  ' );\n\t\t// Then, change &nbsp; character that is at the beginning of the text node to space character.\n\t\t// As above, that &nbsp; was created for rendering reasons but it's real meaning is just a space character.\n\t\t// We do that replacement only if this is the first node or the previous node ends on whitespace character.\n\t\tif ( !prevNode || /[^\\S\\u00A0]/.test( prevNode.data.charAt( prevNode.data.length - 1 ) ) ) {\n\t\t\tdata = data.replace( /^\\u00A0/, ' ' );\n\t\t}\n\t\t// Since input text data could be: `x_ _`, we would not replace the first &nbsp; after `x` character.\n\t\t// We have to fix it. Since we already change all ` &nbsp;`, we will have something like this at the end of text data:\n\t\t// `x_ _ _` -> `x_    `. Find &nbsp; at the end of string (can be followed only by spaces).\n\t\t// We do that replacement only if this is the last node or the next node starts by &nbsp;.\n\t\tif ( !nextNode || nextNode.data.charAt( 0 ) == '\\u00A0' ) {\n\t\t\tdata = data.replace( /\\u00A0( *)$/, ' $1' );\n\t\t}\n\n\t\t// At this point, all whitespaces should be removed and all &nbsp; created for rendering reasons should be\n\t\t// changed to normal space. All left &nbsp; are &nbsp; inserted intentionally.\n\t\treturn data;\n\t}\n\n\t/**\n\t * Helper function. For given `Text` node, it finds previous or next sibling that is contained in the same block element.\n\t * If there is no such sibling, `null` is returned.\n\t *\n\t * @private\n\t * @param {Text} node\n\t * @param {Boolean} getNext\n\t * @returns {Text|null}\n\t */\n\t_getTouchingDomTextNode( node, getNext ) {\n\t\tif ( !node.parentNode ) {\n\t\t\treturn null;\n\t\t}\n\n\t\tconst direction = getNext ? 'nextNode' : 'previousNode';\n\t\tconst document = node.ownerDocument;\n\t\tconst treeWalker = document.createTreeWalker( document.childNodes[ 0 ], NodeFilter.SHOW_TEXT );\n\n\t\ttreeWalker.currentNode = node;\n\n\t\tconst touchingNode = treeWalker[ direction ]();\n\n\t\tif ( touchingNode !== null ) {\n\t\t\tconst lca = getCommonAncestor( node, touchingNode );\n\n\t\t\t// If there is common ancestor between the text node and next/prev text node,\n\t\t\t// and there are no block elements on a way from the text node to that ancestor,\n\t\t\t// and there are no block elements on a way from next/prev text node to that ancestor...\n\t\t\tif ( lca && !_hasDomParentOfType( node, this.blockElements, lca ) && !_hasDomParentOfType( touchingNode, this.blockElements, lca ) ) {\n\t\t\t\t// Then they are in the same container element.\n\t\t\t\treturn touchingNode;\n\t\t\t}\n\t\t}\n\n\t\treturn null;\n\t}\n}\n\n// Helper function.\n// Used to check if given native `Element` or `Text` node has parent with tag name from `types` array.\n//\n// @param {Node} node\n// @param {Array.<String>} types\n// @param {Boolean} [boundaryParent] Can be given if parents should be checked up to a given element (excluding that element).\n// @returns {Boolean} `true` if such parent exists or `false` if it does not.\nfunction _hasDomParentOfType( node, types, boundaryParent ) {\n\tlet parents = getAncestors( node );\n\n\tif ( boundaryParent ) {\n\t\tparents = parents.slice( parents.indexOf( boundaryParent ) + 1 );\n\t}\n\n\treturn parents.some( ( parent ) => parent.tagName && types.includes( parent.tagName.toLowerCase() ) );\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/view/domconverter.js\n// module id = 164\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/emptyelement\n */\n\nimport Element from './element';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\nimport Node from './node';\n\n/**\n * EmptyElement class. It is used to represent elements that cannot contain any child nodes.\n */\nexport default class EmptyElement extends Element {\n\t/**\n\t * Creates new instance of EmptyElement.\n\t *\n\t * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-emptyelement-cannot-add` when third parameter is passed,\n\t * to inform that usage of EmptyElement is incorrect (adding child nodes to EmptyElement is forbidden).\n\t *\n\t * @param {String} name Node name.\n\t * @param {Object|Iterable} [attributes] Collection of attributes.\n\t */\n\tconstructor( name, attributes, children ) {\n\t\tsuper( name, attributes, children );\n\n\t\t/**\n\t\t * Returns `null` because filler is not needed for EmptyElements.\n\t\t *\n\t\t * @method #getFillerOffset\n\t\t * @returns {null} Always returns null.\n\t\t */\n\t\tthis.getFillerOffset = getFillerOffset;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tis( type, name = null ) {\n\t\tif ( !name ) {\n\t\t\treturn type == 'emptyElement' || super.is( type );\n\t\t} else {\n\t\t\treturn ( type == 'emptyElement' && name == this.name ) || super.is( type, name );\n\t\t}\n\t}\n\n\t/**\n\t * Overrides {@link module:engine/view/element~Element#insertChildren} method.\n\t * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-emptyelement-cannot-add` to prevent adding any child nodes\n\t * to EmptyElement.\n\t */\n\tinsertChildren( index, nodes ) {\n\t\tif ( nodes && ( nodes instanceof Node || Array.from( nodes ).length > 0 ) ) {\n\t\t\t/**\n\t\t\t * Cannot add children to {@link module:engine/view/emptyelement~EmptyElement}.\n\t\t\t *\n\t\t\t * @error view-emptyelement-cannot-add\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'view-emptyelement-cannot-add: Cannot add child nodes to EmptyElement instance.' );\n\t\t}\n\t}\n}\n\n// Returns `null` because block filler is not needed for EmptyElements.\n//\n// @returns {null}\nfunction getFillerOffset() {\n\treturn null;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/view/emptyelement.js\n// module id = 165\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/matcher\n */\n\n/**\n * View matcher class.\n * Instance of this class can be used to find {@link module:engine/view/element~Element elements} that match given pattern.\n */\nexport default class Matcher {\n\t/**\n\t * Creates new instance of Matcher.\n\t *\n\t * @param {String|RegExp|Object} [pattern] Match patterns. See {@link module:engine/view/matcher~Matcher#add add method} for\n\t * more information.\n\t */\n\tconstructor( ...pattern ) {\n\t\tthis._patterns = [];\n\n\t\tthis.add( ...pattern );\n\t}\n\n\t/**\n\t * Adds pattern or patterns to matcher instance.\n\t *\n\t * Example patterns matching element's name:\n\t *\n\t *\t\t// String.\n\t *\t\tmatcher.add( 'div' );\n\t *\t\tmatcher.add( { name: 'div' } );\n\t *\n\t *\t\t// Regular expression.\n\t *\t\tmatcher.add( /^\\w/ );\n\t *\t\tmatcher.add( { name: /^\\w/ } );\n\t *\n\t * Example pattern matching element's attributes:\n\t *\n\t *\t\tmatcher.add( {\n\t *\t\t\tattributes: {\n\t *\t\t\t\ttitle: 'foobar',\n\t *\t\t\t\tfoo: /^\\w+/\n\t *\t\t\t}\n\t *\t\t} );\n\t *\n\t * Example patterns matching element's classes:\n\t *\n\t *\t\t// Single class.\n\t *\t\tmatcher.add( {\n\t *\t\t\tclass: 'foobar'\n\t *\t\t} );\n\t *\n\t *\t\t// Single class using regular expression.\n\t *\t\tmatcher.add( {\n\t *\t\t\tclass: /foo.../\n\t *\t\t} );\n\t *\n\t *\t\t// Multiple classes to match.\n\t *\t\tmatcher.add( {\n\t *\t\t\tclass: [ 'baz', 'bar', /foo.../ ]\n\t *\t\t} ):\n\t *\n\t * Example pattern matching element's styles:\n\t *\n\t *\t\tmatcher.add( {\n\t *\t\t\tstyle: {\n\t *\t\t\t\tposition: 'absolute',\n\t *\t\t\t\tcolor: /^\\w*blue$/\n\t *\t\t\t}\n\t *\t\t} );\n\t *\n\t * Example function pattern:\n\t *\n\t *\t\tmatcher.add( ( element ) => {\n\t *\t\t\t// Result of this function will be included in `match`\n\t *\t\t\t// property of the object returned from matcher.match() call.\n\t *\t\t\tif ( element.name === 'div' && element.childCount > 0 ) {\n\t *\t\t\t\treturn { name: true };\n\t *\t\t\t}\n\t *\n\t *\t\t\treturn null;\n\t *\t\t} );\n\t *\n\t * Multiple patterns can be added in one call:\n\t *\n\t * \t\tmatcher.add( 'div', { class: 'foobar' } );\n\t *\n\t * @param {Object|String|RegExp|Function} pattern Object describing pattern details. If string or regular expression\n\t * is provided it will be used to match element's name. Pattern can be also provided in a form\n\t * of a function - then this function will be called with each {@link module:engine/view/element~Element element} as a parameter.\n\t * Function's return value will be stored under `match` key of the object returned from\n\t * {@link module:engine/view/matcher~Matcher#match match} or {@link module:engine/view/matcher~Matcher#matchAll matchAll} methods.\n\t * @param {String|RegExp} [pattern.name] Name or regular expression to match element's name.\n\t * @param {Object} [pattern.attribute] Object with key-value pairs representing attributes to match. Each object key\n\t * represents attribute name. Value under that key can be either a string or a regular expression and it will be\n\t * used to match attribute value.\n\t * @param {String|RegExp|Array} [pattern.class] Class name or array of class names to match. Each name can be\n\t * provided in a form of string or regular expression.\n\t * @param {Object} [pattern.style] Object with key-value pairs representing styles to match. Each object key\n\t * represents style name. Value under that key can be either a string or a regular expression and it will be used\n\t * to match style value.\n\t */\n\tadd( ...pattern ) {\n\t\tfor ( let item of pattern ) {\n\t\t\t// String or RegExp pattern is used as element's name.\n\t\t\tif ( typeof item == 'string' || item instanceof RegExp ) {\n\t\t\t\titem = { name: item };\n\t\t\t}\n\n\t\t\t// Single class name/RegExp can be provided.\n\t\t\tif ( item.class && ( typeof item.class == 'string' || item.class instanceof RegExp ) ) {\n\t\t\t\titem.class = [ item.class ];\n\t\t\t}\n\n\t\t\tthis._patterns.push( item );\n\t\t}\n\t}\n\n\t/**\n\t * Matches elements for currently stored patterns. Returns match information about first found\n\t * {@link module:engine/view/element~Element element}, otherwise returns `null`.\n\t *\n\t * Example of returned object:\n\t *\n\t *\t\t{\n\t *\t\t\telement: <instance of found element>,\n\t *\t\t\tpattern: <pattern used to match found element>,\n\t *\t\t\tmatch: {\n\t *\t\t\t\tname: true,\n \t *\t\t\t\tattributes: [ 'title', 'href' ],\n\t *\t\t\t\tclasses: [ 'foo' ],\n \t *\t\t\t\tstyles: [ 'color', 'position' ]\n\t *\t\t\t}\n\t *\t\t}\n\t *\n\t * @see module:engine/view/matcher~Matcher#add\n\t * @see module:engine/view/matcher~Matcher#matchAll\n\t * @param {...module:engine/view/element~Element} element View element to match against stored patterns.\n\t * @returns {Object|null} result\n\t * @returns {module:engine/view/element~Element} result.element Matched view element.\n\t * @returns {Object|String|RegExp|Function} result.pattern Pattern that was used to find matched element.\n\t * @returns {Object} result.match Object representing matched element parts.\n\t * @returns {Boolean} [result.match.name] True if name of the element was matched.\n\t * @returns {Array} [result.match.attribute] Array with matched attribute names.\n\t * @returns {Array} [result.match.class] Array with matched class names.\n\t * @returns {Array} [result.match.style] Array with matched style names.\n\t */\n\tmatch( ...element ) {\n\t\tfor ( let singleElement of element ) {\n\t\t\tfor ( let pattern of this._patterns ) {\n\t\t\t\tconst match = isElementMatching( singleElement, pattern );\n\n\t\t\t\tif ( match ) {\n\t\t\t\t\treturn {\n\t\t\t\t\t\telement: singleElement,\n\t\t\t\t\t\tpattern: pattern,\n\t\t\t\t\t\tmatch: match\n\t\t\t\t\t};\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn null;\n\t}\n\n\t/**\n\t * Matches elements for currently stored patterns. Returns array of match information with all found\n\t * {@link module:engine/view/element~Element elements}. If no element is found - returns `null`.\n\t *\n\t * @see module:engine/view/matcher~Matcher#add\n\t * @see module:engine/view/matcher~Matcher#match\n\t * @param {...module:engine/view/element~Element} element View element to match against stored patterns.\n\t * @returns {Array.<Object>|null} Array with match information about found elements or `null`. For more information\n\t * see {@link module:engine/view/matcher~Matcher#match match method} description.\n\t */\n\tmatchAll( ...element ) {\n\t\tconst results = [];\n\n\t\tfor ( let singleElement of element ) {\n\t\t\tfor ( let pattern of this._patterns ) {\n\t\t\t\tconst match = isElementMatching( singleElement, pattern );\n\n\t\t\t\tif ( match ) {\n\t\t\t\t\tresults.push( {\n\t\t\t\t\t\telement: singleElement,\n\t\t\t\t\t\tpattern: pattern,\n\t\t\t\t\t\tmatch: match\n\t\t\t\t\t} );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn results.length > 0 ? results : null;\n\t}\n\n\t/**\n\t * Returns the name of the element to match if there is exactly one pattern added to the matcher instance\n\t * and it matches element name defined by `string` (not `RegExp`). Otherwise, returns `null`.\n\t *\n\t * @returns {String|null} Element name trying to match.\n\t */\n\tgetElementName() {\n\t\tif ( this._patterns.length !== 1 ) {\n\t\t\treturn null;\n\t\t}\n\n\t\tconst pattern = this._patterns[ 0 ];\n\t\tconst name = pattern.name;\n\n\t\treturn ( typeof pattern != 'function' && name && !( name instanceof RegExp ) ) ? name : null;\n\t}\n\n}\n\n// Returns match information if {@link module:engine/view/element~Element element} is matching provided pattern.\n// If element cannot be matched to provided pattern - returns `null`.\n//\n// @param {module:engine/view/element~Element} element\n// @param {Object|String|RegExp|Function} pattern\n// @returns {Object|null} Returns object with match information or null if element is not matching.\nfunction isElementMatching( element, pattern ) {\n\t// If pattern is provided as function - return result of that function;\n\tif ( typeof pattern == 'function' ) {\n\t\treturn pattern( element );\n\t}\n\n\tconst match = {};\n\t// Check element's name.\n\tif ( pattern.name ) {\n\t\tmatch.name = matchName( pattern.name, element.name );\n\n\t\tif ( !match.name ) {\n\t\t\treturn null;\n\t\t}\n\t}\n\n\t// Check element's attributes.\n\tif ( pattern.attribute ) {\n\t\tmatch.attribute = matchAttributes( pattern.attribute, element );\n\n\t\tif ( !match.attribute ) {\n\t\t\treturn null;\n\t\t}\n\t}\n\n\t// Check element's classes.\n\tif ( pattern.class ) {\n\t\tmatch.class = matchClasses( pattern.class, element );\n\n\t\tif ( !match.class ) {\n\t\t\treturn false;\n\t\t}\n\t}\n\n\t// Check element's styles.\n\tif ( pattern.style ) {\n\t\tmatch.style = matchStyles( pattern.style, element );\n\n\t\tif ( !match.style ) {\n\t\t\treturn false;\n\t\t}\n\t}\n\n\treturn match;\n}\n\n// Checks if name can be matched by provided pattern.\n//\n// @param {String|RegExp} pattern\n// @param {String} name\n// @returns {Boolean} Returns `true` if name can be matched, `false` otherwise.\nfunction matchName( pattern, name ) {\n\t// If pattern is provided as RegExp - test against this regexp.\n\tif ( pattern instanceof RegExp ) {\n\t\treturn pattern.test( name );\n\t}\n\n\treturn pattern === name;\n}\n\n// Checks if attributes of provided element can be matched against provided patterns.\n//\n// @param {Object} patterns Object with information about attributes to match. Each key of the object will be\n// used as attribute name. Value of each key can be a string or regular expression to match against attribute value.\n// @param {module:engine/view/element~Element} element Element which attributes will be tested.\n// @returns {Array|null} Returns array with matched attribute names or `null` if no attributes were matched.\nfunction matchAttributes( patterns, element ) {\n\tconst match = [];\n\n\tfor ( let name in patterns ) {\n\t\tconst pattern = patterns[ name ];\n\n\t\tif ( element.hasAttribute( name ) ) {\n\t\t\tconst attribute = element.getAttribute( name );\n\n\t\t\tif ( pattern instanceof RegExp ) {\n\t\t\t\tif ( pattern.test( attribute ) ) {\n\t\t\t\t\tmatch.push( name );\n\t\t\t\t} else {\n\t\t\t\t\treturn null;\n\t\t\t\t}\n\t\t\t} else if ( attribute === pattern  ) {\n\t\t\t\tmatch.push( name );\n\t\t\t} else {\n\t\t\t\treturn null;\n\t\t\t}\n\t\t} else {\n\t\t\treturn null;\n\t\t}\n\t}\n\n\treturn match;\n}\n\n// Checks if classes of provided element can be matched against provided patterns.\n//\n// @param {Array.<String|RegExp>} patterns Array of strings or regular expressions to match against element's classes.\n// @param {module:engine/view/element~Element} element Element which classes will be tested.\n// @returns {Array|null} Returns array with matched class names or `null` if no classes were matched.\nfunction matchClasses( patterns, element ) {\n\tconst match = [];\n\n\tfor ( let pattern of patterns ) {\n\t\tif ( pattern instanceof RegExp ) {\n\t\t\tconst classes = element.getClassNames();\n\n\t\t\tfor ( let name of classes ) {\n\t\t\t\tif ( pattern.test( name ) ) {\n\t\t\t\t\tmatch.push( name );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tif ( match.length === 0 ) {\n\t\t\t\treturn null;\n\t\t\t}\n\t\t} else if ( element.hasClass( pattern ) ) {\n\t\t\tmatch.push( pattern );\n\t\t} else {\n\t\t\treturn null;\n\t\t}\n\t}\n\n\treturn match;\n}\n\n// Checks if styles of provided element can be matched against provided patterns.\n//\n// @param {Object} patterns Object with information about styles to match. Each key of the object will be\n// used as style name. Value of each key can be a string or regular expression to match against style value.\n// @param {module:engine/view/element~Element} element Element which styles will be tested.\n// @returns {Array|null} Returns array with matched style names or `null` if no styles were matched.\nfunction matchStyles( patterns, element ) {\n\tconst match = [];\n\n\tfor ( let name in patterns ) {\n\t\tconst pattern = patterns[ name ];\n\n\t\tif ( element.hasStyle( name ) ) {\n\t\t\tconst style = element.getStyle( name );\n\n\t\t\tif ( pattern instanceof RegExp ) {\n\t\t\t\tif ( pattern.test( style ) ) {\n\t\t\t\t\tmatch.push( name );\n\t\t\t\t} else {\n\t\t\t\t\treturn null;\n\t\t\t\t}\n\t\t\t} else if ( style === pattern  ) {\n\t\t\t\tmatch.push( name );\n\t\t\t} else {\n\t\t\t\treturn null;\n\t\t\t}\n\t\t} else {\n\t\t\treturn null;\n\t\t}\n\t}\n\n\treturn match;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/view/matcher.js\n// module id = 166\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/observer/mutationobserver\n */\n\n/* globals window */\n\nimport Observer from './observer';\nimport ViewSelection from '../selection';\nimport { startsWithFiller, getDataWithoutFiller } from '../filler';\n\n/**\n * Mutation observer class observes changes in the DOM, fires {@link module:engine/view/document~Document#event:mutations} event, mark view\n * elements as changed and call {@link module:engine/view/renderer~Renderer#render}.\n * Because all mutated nodes are marked as \"to be rendered\" and the\n * {@link module:engine/view/renderer~Renderer#render} is called, all changes will be reverted, unless the mutation will be handled by the\n * {@link module:engine/view/document~Document#event:mutations} event listener. It means user will see only handled changes, and the editor\n * will block all changes which are not handled.\n *\n * Mutation Observer also take care of reducing number of mutations which are fired. It removes duplicates and\n * mutations on elements which do not have corresponding view elements. Also\n * {@link module:engine/view/observer/mutationobserver~MutatedText text mutation} is fired only if parent element do not change child list.\n *\n * Note that this observer is attached by the {@link module:engine/view/document~Document} and is available by default.\n *\n * @extends module:engine/view/observer/observer~Observer\n */\nexport default class MutationObserver extends Observer {\n\tconstructor( document ) {\n\t\tsuper( document );\n\n\t\t/**\n\t\t * Native mutation observer config.\n\t\t *\n\t\t * @private\n\t\t * @member {Object}\n\t\t */\n\t\tthis._config = {\n\t\t\tchildList: true,\n\t\t\tcharacterData: true,\n\t\t\tcharacterDataOldValue: true,\n\t\t\tsubtree: true\n\t\t};\n\n\t\t/**\n\t\t * Reference to the {@link module:engine/view/document~Document#domConverter}.\n\t\t *\n\t\t * @member {module:engine/view/domconverter~DomConverter}\n\t\t */\n\t\tthis.domConverter = document.domConverter;\n\n\t\t/**\n\t\t * Reference to the {@link module:engine/view/document~Document#renderer}.\n\t\t *\n\t\t * @member {module:engine/view/renderer~Renderer}\n\t\t */\n\t\tthis.renderer = document.renderer;\n\n\t\t/**\n\t\t * Observed DOM elements.\n\t\t *\n\t\t * @private\n\t\t * @member {Array.<HTMLElement>}\n\t\t */\n\t\tthis._domElements = [];\n\n\t\t/**\n\t\t * Native mutation observer.\n\t\t *\n\t\t * @private\n\t\t * @member {MutationObserver}\n\t\t */\n\t\tthis._mutationObserver = new window.MutationObserver( this._onMutations.bind( this ) );\n\t}\n\n\t/**\n\t * Synchronously fires {@link module:engine/view/document~Document#event:mutations} event with all mutations in record queue.\n\t * At the same time empties the queue so mutations will not be fired twice.\n\t */\n\tflush() {\n\t\tthis._onMutations( this._mutationObserver.takeRecords() );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tobserve( domElement ) {\n\t\tthis._domElements.push( domElement );\n\n\t\tif ( this.isEnabled ) {\n\t\t\tthis._mutationObserver.observe( domElement, this._config );\n\t\t}\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tenable() {\n\t\tsuper.enable();\n\n\t\tfor ( let domElement of this._domElements ) {\n\t\t\tthis._mutationObserver.observe( domElement, this._config );\n\t\t}\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tdisable() {\n\t\tsuper.disable();\n\n\t\tthis._mutationObserver.disconnect();\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tdestroy() {\n\t\tsuper.destroy();\n\n\t\tthis._mutationObserver.disconnect();\n\t}\n\n\t/**\n\t * Handles mutations. Deduplicates, mark view elements to sync, fire event and call render.\n\t *\n\t * @private\n\t * @param {Array.<Object>} domMutations Array of native mutations.\n\t */\n\t_onMutations( domMutations ) {\n\t\t// As a result of this.flush() we can have an empty collection.\n\t\tif ( domMutations.length === 0 ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst domConverter = this.domConverter;\n\n\t\t// Use　map and set for deduplication.\n\t\tconst mutatedTexts = new Map();\n\t\tconst mutatedElements = new Set();\n\n\t\t// Handle `childList` mutations first, so we will be able to check if the `characterData` mutation is in the\n\t\t// element with changed structure anyway.\n\t\tfor ( let mutation of domMutations ) {\n\t\t\tif ( mutation.type === 'childList' ) {\n\t\t\t\tconst element = domConverter.getCorrespondingViewElement( mutation.target );\n\n\t\t\t\tif ( element && !this._isBogusBrMutation( mutation ) ) {\n\t\t\t\t\tmutatedElements.add( element );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t// Handle `characterData` mutations later, when we have the full list of nodes which changed structure.\n\t\tfor ( let mutation of domMutations ) {\n\t\t\tif ( mutation.type === 'characterData' ) {\n\t\t\t\tconst text = domConverter.getCorrespondingViewText( mutation.target );\n\n\t\t\t\tif ( text && !mutatedElements.has( text.parent ) ) {\n\t\t\t\t\t// Use text as a key, for deduplication. If there will be another mutation on the same text element\n\t\t\t\t\t// we will have only one in the map.\n\t\t\t\t\tmutatedTexts.set( text, {\n\t\t\t\t\t\ttype: 'text',\n\t\t\t\t\t\toldText: text.data,\n\t\t\t\t\t\tnewText: getDataWithoutFiller( mutation.target ),\n\t\t\t\t\t\tnode: text\n\t\t\t\t\t} );\n\t\t\t\t}\n\t\t\t\t// When we added first letter to the text node which had only inline filler, for the DOM it is mutation\n\t\t\t\t// on text, but for the view, where filler text node did not existed, new text node was created, so we\n\t\t\t\t// need to fire 'children' mutation instead of 'text'.\n\t\t\t\telse if ( !text && startsWithFiller( mutation.target ) ) {\n\t\t\t\t\tmutatedElements.add( domConverter.getCorrespondingViewElement( mutation.target.parentNode ) );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t// Now we build the list of mutations to fire and mark elements. We did not do it earlier to avoid marking the\n\t\t// same node multiple times in case of duplication.\n\n\t\t// List of mutations we will fire.\n\t\tconst viewMutations = [];\n\n\t\tfor ( let mutatedText of mutatedTexts.values() ) {\n\t\t\tthis.renderer.markToSync( 'text', mutatedText.node );\n\t\t\tviewMutations.push( mutatedText );\n\t\t}\n\n\t\tfor ( let viewElement of mutatedElements ) {\n\t\t\tconst domElement = domConverter.getCorrespondingDomElement( viewElement );\n\t\t\tconst viewChildren = viewElement.getChildren();\n\t\t\tconst newViewChildren = domConverter.domChildrenToView( domElement );\n\n\t\t\tthis.renderer.markToSync( 'children', viewElement );\n\t\t\tviewMutations.push( {\n\t\t\t\ttype: 'children',\n\t\t\t\toldChildren: Array.from( viewChildren ),\n\t\t\t\tnewChildren: Array.from( newViewChildren ),\n\t\t\t\tnode: viewElement\n\t\t\t} );\n\t\t}\n\n\t\t// Retrieve `domSelection` using `ownerDocument` of one of mutated nodes.\n\t\t// There should not be simultaneous mutation in multiple documents, so it's fine.\n\t\tconst domSelection = domMutations[ 0 ].target.ownerDocument.getSelection();\n\n\t\tlet viewSelection = null;\n\n\t\tif ( domSelection && domSelection.anchorNode ) {\n\t\t\t// If `domSelection` is inside a dom node that is already bound to a view node from view tree, get\n\t\t\t// corresponding selection in the view and pass it together with `viewMutations`. The `viewSelection` may\n\t\t\t// be used by features handling mutations.\n\t\t\t// Only one range is supported.\n\n\t\t\tconst viewSelectionAnchor = domConverter.domPositionToView( domSelection.anchorNode, domSelection.anchorOffset );\n\t\t\tconst viewSelectionFocus = domConverter.domPositionToView( domSelection.focusNode, domSelection.focusOffset );\n\n\t\t\t// Anchor and focus has to be properly mapped to view.\n\t\t\tif ( viewSelectionAnchor && viewSelectionFocus ) {\n\t\t\t\tviewSelection = new ViewSelection();\n\t\t\t\tviewSelection.collapse( viewSelectionAnchor );\n\t\t\t\tviewSelection.setFocus( viewSelectionFocus );\n\t\t\t}\n\t\t}\n\n\t\tthis.document.fire( 'mutations', viewMutations, viewSelection );\n\n\t\t// If nothing changes on `mutations` event, at this point we have \"dirty DOM\" (changed) and de-synched\n\t\t// view (which has not been changed). In order to \"reset DOM\" we render the view again.\n\t\tthis.document.render();\n\t}\n\n\t/**\n\t * Checks if mutation was generated by the browser inserting bogus br on the end of the block element.\n\t * Such mutations are generated while pressing space or performing native spellchecker correction\n\t * on the end of the block element in Firefox browser.\n\t *\n\t * @private\n\t * @param {Object} mutation Native mutation object.\n\t * @returns {Boolean}\n\t */\n\t_isBogusBrMutation( mutation ) {\n\t\tlet addedNode = null;\n\n\t\t// Check if mutation added only one node on the end of its parent.\n\t\tif ( mutation.nextSibling === null && mutation.removedNodes.length === 0 && mutation.addedNodes.length == 1 ) {\n\t\t\taddedNode = this.domConverter.domToView( mutation.addedNodes[ 0 ], {\n\t\t\t\twithChildren: false\n\t\t\t} );\n\t\t}\n\n\t\treturn addedNode && addedNode.is( 'element', 'br' );\n\t}\n}\n\n/**\n * Fired when mutation occurred. If tree view is not changed on this event, DOM will be reverter to the state before\n * mutation, so all changes which should be applied, should be handled on this event.\n *\n * Introduced by {@link module:engine/view/observer/mutationobserver~MutationObserver}.\n *\n * Note that because {@link module:engine/view/observer/mutationobserver~MutationObserver} is attached by the\n * {@link module:engine/view/document~Document}\n * this event is available by default.\n *\n * @see module:engine/view/observer/mutationobserver~MutationObserver\n * @event module:engine/view/document~Document#event:mutations\n * @param {Array.<module:engine/view/observer/mutationobserver~MutatedText|module:engine/view/observer/mutationobserver~MutatedChildren>}\n * viewMutations Array of mutations.\n * For mutated texts it will be {@link module:engine/view/observer/mutationobserver~MutatedText} and for mutated elements it will be\n * {@link module:engine/view/observer/mutationobserver~MutatedChildren}. You can recognize the type based on the `type` property.\n * @param {module:engine/view/selection~Selection|null} viewSelection View selection that is a result of converting DOM selection to view.\n * Keep in\n * mind that the DOM selection is already \"updated\", meaning that it already acknowledges changes done in mutation.\n */\n\n/**\n * Mutation item for text.\n *\n * @see module:engine/view/document~Document#event:mutations\n * @see module:engine/view/observer/mutationobserver~MutatedChildren\n *\n * @typedef {Object} module:engine/view/observer/mutationobserver~MutatedText\n *\n * @property {String} type For text mutations it is always 'text'.\n * @property {module:engine/view/text~Text} node Mutated text node.\n * @property {String} oldText Old text.\n * @property {String} newText New text.\n */\n\n/**\n * Mutation item for child nodes.\n *\n * @see module:engine/view/document~Document#event:mutations\n * @see module:engine/view/observer/mutationobserver~MutatedText\n *\n * @typedef {Object} module:engine/view/observer/mutationobserver~MutatedChildren\n *\n * @property {String} type For child nodes mutations it is always 'children'.\n * @property {module:engine/view/element~Element} node Parent of the mutated children.\n * @property {Array.<module:engine/view/node~Node>} oldChildren Old child nodes.\n * @property {Array.<module:engine/view/node~Node>} newChildren New child nodes.\n */\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/view/observer/mutationobserver.js\n// module id = 167\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/rooteditableelement\n */\n\nimport EditableElement from './editableelement';\n\nconst rootNameSymbol = Symbol( 'rootName' );\n\n/**\n * Class representing a single root in the data view. A root can be either {@link #isReadOnly editable or read-only}, but\n * in both cases it is called \"an editable\". Roots can contain other {@link module:engine/view/editableelement~EditableElement editable\n * elements}\n * making them \"nested editables\".\n *\n * @extends module:engine/view/editableelement~EditableElement\n */\nexport default class RootEditableElement extends EditableElement {\n\t/**\n\t * Creates root editable element.\n\t *\n\t * @param {module:engine/view/document~Document} document {@link module:engine/view/document~Document} that is an owner of the root.\n\t * @param {String} name Node name.\n\t */\n\tconstructor( name ) {\n\t\tsuper( name );\n\n\t\t/**\n\t\t * Name of this root inside {@link module:engine/view/document~Document} that is an owner of this root. If no\n\t\t * other name is set, `main` name is used.\n\t\t *\n\t\t * @member {String}\n\t\t */\n\t\tthis.rootName = 'main';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tis( type, name = null ) {\n\t\tif ( !name ) {\n\t\t\treturn type == 'rootElement' || super.is( type );\n\t\t} else {\n\t\t\treturn ( type == 'rootElement' && name == this.name ) || super.is( type, name );\n\t\t}\n\t}\n\n\tget rootName() {\n\t\treturn this.getCustomProperty( rootNameSymbol );\n\t}\n\n\tset rootName( rootName ) {\n\t\tthis.setCustomProperty( rootNameSymbol, rootName );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/view/rooteditableelement.js\n// module id = 168\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/uielement\n */\n\nimport Element from './element';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\nimport Node from './node';\n\n/**\n * UIElement class. It is used to represent UI not a content of the document.\n * This element can't be split and selection can't be placed inside this element.\n */\nexport default class UIElement extends Element {\n\t/**\n\t * Creates new instance of UIElement.\n\t *\n\t * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-uielement-cannot-add` when third parameter is passed,\n\t * to inform that usage of UIElement is incorrect (adding child nodes to UIElement is forbidden).\n\t *\n\t * @param {String} name Node name.\n\t * @param {Object|Iterable} [attributes] Collection of attributes.\n\t */\n\tconstructor( name, attributes, children ) {\n\t\tsuper( name, attributes, children );\n\n\t\t/**\n\t\t * Returns `null` because filler is not needed for UIElements.\n\t\t *\n\t\t * @method #getFillerOffset\n\t\t * @returns {null} Always returns null.\n\t\t */\n\t\tthis.getFillerOffset = getFillerOffset;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tis( type, name = null ) {\n\t\tif ( !name ) {\n\t\t\treturn type == 'uiElement' || super.is( type );\n\t\t} else {\n\t\t\treturn ( type == 'uiElement' && name == this.name ) || super.is( type, name );\n\t\t}\n\t}\n\n\t/**\n\t * Overrides {@link module:engine/view/element~Element#insertChildren} method.\n\t * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-uielement-cannot-add` to prevent adding any child nodes\n\t * to UIElement.\n\t */\n\tinsertChildren( index, nodes ) {\n\t\tif ( nodes && ( nodes instanceof Node || Array.from( nodes ).length > 0 ) ) {\n\t\t\t/**\n\t\t\t * Cannot add children to {@link module:engine/view/uielement~UIElement}.\n\t\t\t *\n\t\t\t * @error view-uielement-cannot-add\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'view-uielement-cannot-add: Cannot add child nodes to UIElement instance.' );\n\t\t}\n\t}\n}\n\n// Returns `null` because block filler is not needed for UIElements.\n//\n// @returns {null}\nfunction getFillerOffset() {\n\treturn null;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/view/uielement.js\n// module id = 169\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module heading/headingengine\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport buildModelConverter from '@ckeditor/ckeditor5-engine/src/conversion/buildmodelconverter';\nimport buildViewConverter from '@ckeditor/ckeditor5-engine/src/conversion/buildviewconverter';\nimport Paragraph from '@ckeditor/ckeditor5-paragraph/src/paragraph';\nimport HeadingCommand from './headingcommand';\n\nconst defaultModelElement = 'paragraph';\n\n/**\n * The headings engine feature. It handles switching between block formats &ndash; headings and paragraph.\n * This class represents the engine part of the heading feature. See also {@link module:heading/heading~Heading}.\n *\n * @extends modules:core/plugin~Plugin\n */\nexport default class HeadingEngine extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tconstructor( editor ) {\n\t\tsuper( editor );\n\n\t\t// TODO: This needs proper documentation, i.e. why paragraph entry does not need\n\t\t// more properties (https://github.com/ckeditor/ckeditor5/issues/403).\n\t\t// TODO: Document CSS classes as well.\n\t\teditor.config.define( 'heading', {\n\t\t\toptions: [\n\t\t\t\t{ modelElement: 'paragraph', title: 'Paragraph', class: 'ck-heading_paragraph' },\n\t\t\t\t{ modelElement: 'heading1', viewElement: 'h2', title: 'Heading 1', class: 'ck-heading_heading1' },\n\t\t\t\t{ modelElement: 'heading2', viewElement: 'h3', title: 'Heading 2', class: 'ck-heading_heading2' },\n\t\t\t\t{ modelElement: 'heading3', viewElement: 'h4', title: 'Heading 3', class: 'ck-heading_heading3' }\n\t\t\t]\n\t\t} );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get requires() {\n\t\treturn [ Paragraph ];\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tconst editor = this.editor;\n\t\tconst data = editor.data;\n\t\tconst editing = editor.editing;\n\t\tconst options = editor.config.get( 'heading.options' );\n\n\t\tfor ( let option of options ) {\n\t\t\t// Skip paragraph - it is defined in required Paragraph feature.\n\t\t\tif ( option.modelElement !== defaultModelElement ) {\n\t\t\t\t// Schema.\n\t\t\t\teditor.document.schema.registerItem( option.modelElement, '$block' );\n\n\t\t\t\t// Build converter from model to view for data and editing pipelines.\n\t\t\t\tbuildModelConverter().for( data.modelToView, editing.modelToView )\n\t\t\t\t\t.fromElement( option.modelElement )\n\t\t\t\t\t.toElement( option.viewElement );\n\n\t\t\t\t// Build converter from view to model for data pipeline.\n\t\t\t\tbuildViewConverter().for( data.viewToModel )\n\t\t\t\t\t.fromElement( option.viewElement )\n\t\t\t\t\t.toElement( option.modelElement );\n\n\t\t\t\t// Register the heading command for this option.\n\t\t\t\teditor.commands.set( option.modelElement, new HeadingCommand( editor, option ) );\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tafterInit() {\n\t\t// If the enter command is added to the editor, alter its behavior.\n\t\t// Enter at the end of a heading element should create a paragraph.\n\t\tconst editor = this.editor;\n\t\tconst enterCommand = editor.commands.get( 'enter' );\n\t\tconst options = editor.config.get( 'heading.options' );\n\n\t\tif ( enterCommand ) {\n\t\t\tthis.listenTo( enterCommand, 'afterExecute', ( evt, data ) => {\n\t\t\t\tconst positionParent = editor.document.selection.getFirstPosition().parent;\n\t\t\t\tconst batch = data.batch;\n\t\t\t\tconst isHeading = options.some( option => positionParent.is( option.modelElement ) );\n\n\t\t\t\tif ( isHeading && !positionParent.is( defaultModelElement ) && positionParent.childCount === 0 ) {\n\t\t\t\t\tbatch.rename( positionParent, defaultModelElement );\n\t\t\t\t}\n\t\t\t} );\n\t\t}\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-heading/src/headingengine.js\n// module id = 170\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module image/image/imageengine\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport buildModelConverter from '@ckeditor/ckeditor5-engine/src/conversion/buildmodelconverter';\nimport { viewToModelImage, createImageAttributeConverter } from './converters';\nimport { toImageWidget } from './utils';\nimport ViewContainerElement from '@ckeditor/ckeditor5-engine/src/view/containerelement';\nimport ViewEmptyElement from '@ckeditor/ckeditor5-engine/src/view/emptyelement';\n\n/**\n * The image engine plugin.\n * Registers `image` as a block element in document's schema and allows it to have two attributes: `src` and `alt`.\n * Registers converters for editing and data pipelines.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class ImageEngine extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tconst editor = this.editor;\n\t\tconst doc = editor.document;\n\t\tconst schema = doc.schema;\n\t\tconst data = editor.data;\n\t\tconst editing = editor.editing;\n\t\tconst t = editor.t;\n\n\t\t// Configure schema.\n\t\tschema.registerItem( 'image' );\n\t\tschema.requireAttributes( 'image', [ 'src' ] );\n\t\tschema.allow( { name: 'image', attributes: [ 'alt', 'src' ], inside: '$root' } );\n\t\tschema.objects.add( 'image' );\n\n\t\t// Build converter from model to view for data pipeline.\n\t\tbuildModelConverter().for( data.modelToView )\n\t\t\t.fromElement( 'image' )\n\t\t\t.toElement( () => createImageViewElement() );\n\n\t\t// Build converter from model to view for editing pipeline.\n\t\tbuildModelConverter().for( editing.modelToView )\n\t\t\t.fromElement( 'image' )\n\t\t\t.toElement( () => toImageWidget( createImageViewElement(), t( 'image widget' ) ) );\n\n\t\tcreateImageAttributeConverter( [ editing.modelToView, data.modelToView ], 'src' );\n\t\tcreateImageAttributeConverter( [ editing.modelToView, data.modelToView ], 'alt' );\n\n\t\t// Converter for figure element from view to model.\n\t\tdata.viewToModel.on( 'element:figure', viewToModelImage() );\n\t}\n}\n\n// Creates view element representing the image.\n//\n//\t\t<figure class=\"image\"><img></img></figure>\n//\n// Note that `alt` and `src` attributes are converted separately, so they're not included.\n//\n// @private\n// @return {module:engine/view/containerelement~ContainerElement}\nexport function createImageViewElement() {\n\treturn new ViewContainerElement( 'figure', { class: 'image' }, new ViewEmptyElement( 'img' ) );\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-image/src/image/imageengine.js\n// module id = 171\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module image/image/ui/imageballoonpanel\n */\n\nimport throttle from '@ckeditor/ckeditor5-utils/src/lib/lodash/throttle';\nimport global from '@ckeditor/ckeditor5-utils/src/dom/global';\nimport BalloonPanelView from '@ckeditor/ckeditor5-ui/src/panel/balloon/balloonpanelview';\nimport { isImageWidget } from '../utils';\n\nconst arrowVOffset = BalloonPanelView.arrowVerticalOffset;\nconst positions = {\n\t//\t   [text range]\n\t//\t        ^\n\t//\t+-----------------+\n\t//\t|     Balloon     |\n\t//\t+-----------------+\n\tsouth( targetRect, balloonRect ) {\n\t\treturn {\n\t\t\ttop: targetRect.bottom + arrowVOffset,\n\t\t\tleft: targetRect.left + targetRect.width / 2 - balloonRect.width / 2,\n\t\t\tname: 's'\n\t\t};\n\t},\n\n\t//\t+-----------------+\n\t//\t|     Balloon     |\n\t//\t+-----------------+\n\t//\t        V\n\t//\t   [text range]\n\tnorth( targetRect, balloonRect ) {\n\t\treturn {\n\t\t\ttop: targetRect.top - balloonRect.height - arrowVOffset,\n\t\t\tleft: targetRect.left + targetRect.width / 2 - balloonRect.width / 2,\n\t\t\tname: 'n'\n\t\t};\n\t}\n};\n\n/**\n * Image balloon panel class. It extends {module:ui/panel/balloon/balloonpanelview~BalloonPanelView} by adding helpers\n * to use with image widgets. It sets proper positioning on `scroll` and `resize` events and hides the panel when\n * image is no longer selected or focus is lost.\n *\n * @extends module:ui/panel/balloon/balloonpanelview~BalloonPanelView\n */\nexport default class ImageBalloonPanelView extends BalloonPanelView {\n\t/**\n\t * @inheritDoc\n\t */\n\tconstructor( editor ) {\n\t\tsuper( editor.locale );\n\n\t\tthis.editor = editor;\n\t\tconst editingView = editor.editing.view;\n\n\t\t// Hide the balloon if editor had focus and now focus is lost.\n\t\tthis.listenTo( editor.ui.focusTracker, 'change:isFocused', ( evt, name, is, was ) => {\n\t\t\tif ( was && !is ) {\n\t\t\t\tthis.detach();\n\t\t\t}\n\t\t} );\n\n\t\t// Hide the balloon if no image is currently selected.\n\t\teditor.listenTo( editingView, 'render', () => {\n\t\t\tconst selectedElement = editingView.selection.getSelectedElement();\n\n\t\t\tif ( !selectedElement || !isImageWidget( selectedElement ) ) {\n\t\t\t\tthis.detach();\n\t\t\t}\n\t\t}, { priority: 'low' } );\n\n\t\t/**\n\t\t * Wraps {@link #_attach} method with throttle function that will fire it not more than every 100ms.\n\t\t * It is used as `scroll` and `resize` callback.\n\t\t *\n\t\t * @private\n\t\t * @member {Function} #_throttledAttach\n\t\t */\n\t\tthis._throttledAttach = throttle( () => {\n\t\t\tthis._attach();\n\t\t}, 100 );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\t// Let the focusTracker know about new focusable UI element.\n\t\tthis.editor.ui.focusTracker.add( this.element );\n\n\t\treturn super.init();\n\t}\n\n\t/**\n\t * Attaches the panel and enables `scroll` and `resize` listeners.\n\t */\n\tattach() {\n\t\tthis._attach();\n\t\tthis.editor.ui.view.listenTo( global.window, 'scroll', this._throttledAttach );\n\t\tthis.editor.ui.view.listenTo( global.window, 'resize', this._throttledAttach );\n\t}\n\n\t/**\n\t * Detaches the panel and disables `scroll` and `resize` listeners.\n\t */\n\tdetach() {\n\t\tthis.hide();\n\t\tthis.editor.ui.view.stopListening( global.window, 'scroll', this._throttledAttach );\n\t\tthis.editor.ui.view.stopListening( global.window, 'resize', this._throttledAttach );\n\t}\n\n\t/**\n\t * Attaches the panel to the first selection range.\n\t *\n\t * @private\n\t */\n\t_attach() {\n\t\tconst editingView = this.editor.editing.view;\n\n\t\tthis.attachTo( {\n\t\t\ttarget: editingView.domConverter.viewRangeToDom( editingView.selection.getFirstRange() ),\n\t\t\tpositions: [ positions.north, positions.south ]\n\t\t} );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-image/src/image/ui/imageballoonpanelview.js\n// module id = 172\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module image/imagetoolbar\n */\n\nimport Template from '@ckeditor/ckeditor5-ui/src/template';\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport ToolbarView from '@ckeditor/ckeditor5-ui/src/toolbar/toolbarview';\nimport { isImageWidget } from './image/utils';\nimport ImageBalloonPanel from './image/ui/imageballoonpanelview';\n\n/**\n * Image toolbar class. Creates image toolbar placed inside balloon panel that is showed when image widget is selected.\n * Toolbar components are created using editor's {@link module:ui/componentfactory~ComponentFactory ComponentFactory}\n * based on {@link module:core/editor/editor~Editor#config configuration} stored under `image.toolbar`.\n * Other plugins can add new components to the default toolbar configuration by pushing them to `image.defaultToolbar`\n * configuration. Default configuration is used when `image.toolbar` config is not present.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class ImageToolbar extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get pluginName() {\n\t\treturn 'image/imagetoolbar';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tconstructor( editor ) {\n\t\tsuper( editor );\n\n\t\teditor.config.set( 'image.defaultToolbar', [] );\n\n\t\t/**\n\t\t * When set to `true`, toolbar will be repositioned and showed on each render event and focus change.\n\t\t * Set to `false` to temporary disable the image toolbar.\n\t\t *\n\t\t * @member {Boolean}\n\t\t */\n\t\tthis.isEnabled = true;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tafterInit() {\n\t\tconst editor = this.editor;\n\t\tconst toolbarConfig = editor.config.get( 'image.toolbar' ) || editor.config.get( 'image.defaultToolbar' );\n\n\t\t// Don't add the toolbar if there is no configuration.\n\t\tif ( !toolbarConfig.length ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst panel = this._panel = new ImageBalloonPanel( editor );\n\t\tconst promises = [];\n\t\tconst toolbar = new ToolbarView();\n\n\t\t// Add CSS class to the panel.\n\t\tTemplate.extend( panel.template, {\n\t\t\tattributes: {\n\t\t\t\tclass: [\n\t\t\t\t\t'ck-toolbar__container'\n\t\t\t\t]\n\t\t\t}\n\t\t} );\n\n\t\t// Add toolbar to balloon panel.\n\t\tpromises.push( panel.content.add( toolbar ) );\n\n\t\t// Add buttons to the toolbar.\n\t\tpromises.push( toolbar.fillFromConfig( toolbarConfig, editor.ui.componentFactory ) );\n\n\t\t// Add balloon panel to editor's UI.\n\t\tpromises.push( editor.ui.view.body.add( panel ) );\n\n\t\t// Show balloon panel each time image widget is selected.\n\t\tthis.listenTo( this.editor.editing.view, 'render', () => {\n\t\t\tif ( this.isEnabled ) {\n\t\t\t\tthis.show();\n\t\t\t}\n\t\t}, { priority: 'low' } );\n\n\t\t// There is no render method after focus is back in editor, we need to check if balloon panel should be visible.\n\t\tthis.listenTo( editor.ui.focusTracker, 'change:isFocused', ( evt, name, is, was ) => {\n\t\t\tif ( !was && is && this.isEnabled ) {\n\t\t\t\tthis.show();\n\t\t\t}\n\t\t} );\n\n\t\treturn Promise.all( promises );\n\t}\n\n\t/**\n\t * Shows the toolbar.\n\t */\n\tshow() {\n\t\tconst selectedElement = this.editor.editing.view.selection.getSelectedElement();\n\n\t\tif ( selectedElement && isImageWidget( selectedElement ) ) {\n\t\t\tthis._panel.attach();\n\t\t}\n\t}\n\n\t/**\n\t * Hides the toolbar.\n\t */\n\thide() {\n\t\tthis._panel.detach();\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-image/src/imagetoolbar.js\n// module id = 173\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module link/findlinkrange\n */\n\nimport Range from '@ckeditor/ckeditor5-engine/src/model/range';\nimport Position from '@ckeditor/ckeditor5-engine/src/model/position';\n\n/**\n * Walk backward and forward from start position, node by node as long as they have the same `linkHref` attribute value and return\n * {@link module:engine/model/range~Range Range} with found link.\n *\n * @param {module:engine/model/position~Position} position Start position.\n * @param {String} value `linkHref` attribute value.\n * @returns {module:engine/model/range~Range} Link range.\n */\nexport default function findLinkRange( position, value ) {\n\treturn new Range( _findBound( position, value, true ), _findBound( position, value, false ) );\n}\n\n// Walk forward or backward (depends on `lookBack` flag), node by node as long as they have the same `linkHref` attribute value\n// and return position just before or after (depends on `lookBack` flag) last matched node.\n//\n// @param {module:engine/model/position~Position} position Start position.\n// @param {String} value `linkHref` attribute value.\n// @param {Boolean} lookBack Whether walk direction is forward `false` or backward `true`.\n// @returns {module:engine/model/position~Position} Position just before last matched node.\nfunction _findBound( position, value, lookBack ) {\n\t// Get node before or after position (depends on `lookBack` flag).\n\t// When position is inside text node then start searching from text node.\n\tlet node = position.textNode || ( lookBack ? position.nodeBefore : position.nodeAfter );\n\n\tlet lastNode = null;\n\n\twhile ( node && node.getAttribute( 'linkHref' ) == value ) {\n\t\tlastNode = node;\n\t\tnode = lookBack ? node.previousSibling : node.nextSibling;\n\t}\n\n\treturn lastNode ? Position.createAt( lastNode, lookBack ? 'before' : 'after' ) : position;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-link/src/findlinkrange.js\n// module id = 174\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module link/linkelement\n */\n\nimport AttributeElement from '@ckeditor/ckeditor5-engine/src/view/attributeelement';\n\n/**\n * This class is to mark specific {@link module:engine/view/node~Node} as {@link module:link/linkelement~LinkElement}.\n * E.g. There could be a situation when different features will create nodes with the same names,\n * and hence they must be identified somehow.\n *\n * @extends module:engine/view/attributelement~AttributeElement\n */\nexport default class LinkElement extends AttributeElement {\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-link/src/linkelement.js\n// module id = 175\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module list/listengine\n */\n\nimport ListCommand from './listcommand';\nimport IndentCommand from './indentcommand';\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport Paragraph from '@ckeditor/ckeditor5-paragraph/src/paragraph';\n\nimport {\n\tcleanList,\n\tcleanListItem,\n\tmodelViewInsertion,\n\tmodelViewChangeType,\n\tmodelViewMergeAfter,\n\tmodelViewRemove,\n\tmodelViewSplitOnInsert,\n\tmodelViewChangeIndent,\n\tmodelChangePostFixer,\n\tviewModelConverter,\n\tmodelToViewPosition,\n\tviewToModelPosition\n} from './converters';\n\n/**\n * The engine of the lists feature. It handles creating, editing and removing lists and list items.\n * It registers the `numberedList`, `bulletedList`, `indentList` and `outdentList` commands.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class ListEngine extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get requires() {\n\t\treturn [ Paragraph ];\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tconst editor = this.editor;\n\n\t\t// Schema.\n\t\t// Note: in case `$block` will be ever allowed in `listItem`, keep in mind that this feature\n\t\t// uses `Selection#getSelectedBlocks()` without any additional processing to obtain all selected list items.\n\t\t// If there are blocks allowed inside list item, algorithms using `getSelectedBlocks()` will have to be modified.\n\t\tconst schema = editor.document.schema;\n\t\tschema.registerItem( 'listItem', '$block' );\n\t\tschema.allow( {\n\t\t\tname: 'listItem',\n\t\t\tinside: '$root',\n\t\t\tattributes: [ 'type', 'indent' ]\n\t\t} );\n\t\tschema.requireAttributes( 'listItem', [ 'type', 'indent' ] );\n\n\t\t// Converters.\n\t\tconst data = editor.data;\n\t\tconst editing = editor.editing;\n\n\t\tthis.editor.document.on( 'change', modelChangePostFixer( this.editor.document ), { priority: 'high' } );\n\n\t\t// Unbind all moved model elements before conversion happens. This is important for converters.\n\t\t// TODO: fix this when changes are converted on `changesDone`.\n\t\tthis.editor.document.on( 'change', ( evt, type, changes ) => {\n\t\t\tif ( type == 'move' ) {\n\t\t\t\tfor ( let item of changes.range.getItems() ) {\n\t\t\t\t\tif ( item.is( 'listItem' ) ) {\n\t\t\t\t\t\tediting.mapper.unbindModelElement( item );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}, { priority: 'high' } );\n\n\t\tediting.mapper.registerViewToModelLength( 'li', getViewListItemLength );\n\t\tdata.mapper.registerViewToModelLength( 'li', getViewListItemLength );\n\n\t\tediting.mapper.on( 'modelToViewPosition', modelToViewPosition );\n\t\tediting.mapper.on( 'viewToModelPosition', viewToModelPosition );\n\t\tdata.mapper.on( 'modelToViewPosition', modelToViewPosition );\n\n\t\tediting.modelToView.on( 'insert', modelViewSplitOnInsert, { priority: 'high' } );\n\t\tediting.modelToView.on( 'insert:listItem', modelViewInsertion );\n\t\tdata.modelToView.on( 'insert', modelViewSplitOnInsert, { priority: 'high' } );\n\t\tdata.modelToView.on( 'insert:listItem', modelViewInsertion );\n\n\t\t// Only change converter is needed. List item's type attribute is required, so it's adding is handled when\n\t\t// list item is added and you cannot remove it.\n\t\tediting.modelToView.on( 'changeAttribute:type:listItem', modelViewChangeType );\n\t\tdata.modelToView.on( 'changeAttribute:type:listItem', modelViewChangeType );\n\n\t\tediting.modelToView.on( 'remove:listItem', modelViewRemove );\n\t\tediting.modelToView.on( 'remove', modelViewMergeAfter, { priority: 'low' } );\n\t\tdata.modelToView.on( 'remove:listItem', modelViewRemove );\n\t\tdata.modelToView.on( 'remove', modelViewMergeAfter, { priority: 'low' } );\n\n\t\tediting.modelToView.on( 'changeAttribute:indent:listItem', modelViewChangeIndent );\n\t\tdata.modelToView.on( 'changeAttribute:indent:listItem', modelViewChangeIndent );\n\n\t\tdata.viewToModel.on( 'element:ul', cleanList, { priority: 'high' } );\n\t\tdata.viewToModel.on( 'element:ol', cleanList, { priority: 'high' } );\n\t\tdata.viewToModel.on( 'element:li', cleanListItem, { priority: 'high' } );\n\t\tdata.viewToModel.on( 'element:li', viewModelConverter );\n\n\t\t// Register commands for numbered and bulleted list.\n\t\teditor.commands.set( 'numberedList', new ListCommand( editor, 'numbered' ) );\n\t\teditor.commands.set( 'bulletedList', new ListCommand( editor, 'bulleted' ) );\n\n\t\t// Register commands for indenting.\n\t\teditor.commands.set( 'indentList', new IndentCommand( editor, 'forward' ) );\n\t\teditor.commands.set( 'outdentList', new IndentCommand( editor, 'backward' ) );\n\t}\n}\n\nfunction getViewListItemLength( element ) {\n\tlet length = 1;\n\n\tfor ( let child of element.getChildren() ) {\n\t\tif ( child.name == 'ul' || child.name == 'ol' ) {\n\t\t\tfor ( let item of child.getChildren() ) {\n\t\t\t\tlength += getViewListItemLength( item );\n\t\t\t}\n\t\t}\n\t}\n\n\treturn length;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-list/src/listengine.js\n// module id = 176\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module typing/changebuffer\n */\n\nimport count from '@ckeditor/ckeditor5-utils/src/count';\n\n/**\n * Change buffer allows to group atomic changes (like characters that have been typed) into\n * {@link module:engine/model/batch~Batch batches}.\n *\n * Batches represent single undo steps, hence changes added to one single batch are undone together.\n *\n * The buffer has a configurable limit of atomic changes that it can accommodate. After the limit was\n * exceeded (see {@link ~ChangeBuffer#input}), a new batch is created in {@link ~ChangeBuffer#batch}.\n *\n * To use the change buffer you need to let it know about the number of changes that were added to the batch:\n *\n *\t\tconst buffer = new ChangeBuffer( document, LIMIT );\n *\n *\t\t// Later on in your feature:\n *\t\tbuffer.batch.insert( pos, insertedCharacters );\n *\t\tbuffer.input( insertedCharacters.length );\n *\n */\nexport default class ChangeBuffer {\n\t/**\n\t * Creates a new instance of the change buffer.\n\t *\n\t * @param {module:engine/model/document~Document} document\n\t * @param {Number} [limit=20] The maximum number of atomic changes which can be contained in one batch.\n\t */\n\tconstructor( doc, limit = 20 ) {\n\t\t/**\n\t\t * The document instance.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/model/document~Document} #document\n\t\t */\n\t\tthis.document = doc;\n\n\t\t/**\n\t\t * The number of atomic changes in the buffer. Once it exceeds the {@link #limit},\n\t\t * the {@link #batch batch} is set to a new one.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Number} #size\n\t\t */\n\t\tthis.size = 0;\n\n\t\t/**\n\t\t * The maximum number of atomic changes which can be contained in one batch.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Number} #limit\n\t\t */\n\t\tthis.limit = limit;\n\n\t\t/**\n\t\t * Whether the buffer is locked. The locked buffer cannot be reset unless it gets unlocked.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Boolean} #isLocked\n\t\t */\n\t\tthis.isLocked = false;\n\n\t\tthis._changeCallback = ( evt, type, changes, batch ) => {\n\t\t\tthis._onBatch( batch );\n\t\t};\n\n\t\tthis._selectionChangeCallback = () => {\n\t\t\tthis._reset();\n\t\t};\n\n\t\tdoc.on( 'change', this._changeCallback );\n\n\t\tdoc.selection.on( 'change:range', this._selectionChangeCallback );\n\n\t\tdoc.selection.on( 'change:attribute', this._selectionChangeCallback );\n\n\t\t/**\n\t\t * The current batch instance.\n\t\t *\n\t\t * @private\n\t\t * @member #_batch\n\t\t */\n\n\t\t/**\n\t\t * The callback to document the change event which later needs to be removed.\n\t\t *\n\t\t * @private\n\t\t * @member #_changeCallback\n\t\t */\n\n\t\t/**\n\t\t * The callback to document selection change:attribute and change:range events which resets the buffer.\n\t\t *\n\t\t * @private\n\t\t * @member #_selectionChangeCallback\n\t\t */\n\t}\n\n\t/**\n\t * The current batch to which a feature should add its deltas. Once the {@link #size}\n\t * is reached or exceeds the {@link #limit}, the batch is set to a new instance and the size is reset.\n\t *\n\t * @type {module:engine/model/batch~Batch}\n\t */\n\tget batch() {\n\t\tif ( !this._batch ) {\n\t\t\tthis._batch = this.document.batch();\n\t\t}\n\n\t\treturn this._batch;\n\t}\n\n\t/**\n\t * The input number of changes into the buffer. Once the {@link #size} is\n\t * reached or exceeds the {@link #limit}, the batch is set to a new instance and the size is reset.\n\t *\n\t * @param {Number} changeCount The number of atomic changes to input.\n\t */\n\tinput( changeCount ) {\n\t\tthis.size += changeCount;\n\n\t\tif ( this.size >= this.limit ) {\n\t\t\tthis._reset( true );\n\t\t}\n\t}\n\n\t/**\n\t * Locks the buffer.\n\t */\n\tlock() {\n\t\tthis.isLocked = true;\n\t}\n\n\t/**\n\t * Unlocks the buffer.\n\t */\n\tunlock() {\n\t\tthis.isLocked = false;\n\t}\n\n\t/**\n\t * Destroys the buffer.\n\t */\n\tdestroy() {\n\t\tthis.document.off( 'change', this._changeCallback );\n\t\tthis.document.selection.off( 'change:range', this._selectionChangeCallback );\n\t\tthis.document.selection.off( 'change:attribute', this._selectionChangeCallback );\n\t}\n\n\t/**\n\t * The method to be called in order to notify the buffer about batches which appeared in the document.\n\t * The method will check whether it is a new batch and in that case the buffer will be flushed.\n\t *\n\t * The reason why the buffer needs to be flushed whenever a new batch appears is that the changes added afterwards\n\t * should be added to a new batch. For instance, when the  user types, then inserts an image, and then types again,\n\t * the characters typed after inserting the image should be added to a different batch than the characters typed before.\n\t *\n\t * @private\n\t * @param {module:engine/model/batch~Batch} batch The batch which appears in the document.\n\t */\n\t_onBatch( batch ) {\n\t\t// One operation means a newly created batch.\n\t\tif ( batch.type != 'transparent' && batch !== this._batch && count( batch.getOperations() ) <= 1 ) {\n\t\t\tthis._reset( true );\n\t\t}\n\t}\n\n\t/**\n\t * Resets the change buffer.\n\t *\n\t * @private\n\t * @param {Boolean} [ignoreLock] Whether internal lock {@link #isLocked} should be ignored.\n\t */\n\t_reset( ignoreLock ) {\n\t\tif ( !this.isLocked || ignoreLock ) {\n\t\t\tthis._batch = null;\n\t\t\tthis.size = 0;\n\t\t}\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-typing/src/changebuffer.js\n// module id = 177\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/bindings/clickoutsidehandler\n */\n\n/* global document */\n\n/**\n * Handles a DOM `click` event outside of specified element and fires an action.\n *\n * Note that it is not handled by a `click` event, this is to avoid situation when click on some trigger\n * opens and closes element at the same time.\n *\n * @param {Object} options Configuration options.\n * @param {module:utils/dom/emittermixin~Emitter} options.emitter The emitter to which this behavior should be added.\n * @param {Function} options.activator Function returning a `Boolean`, to determine whether handler is active.\n * @param {HTMLElement} options.contextElement `HTMLElement` that clicking inside of which will not fire the callback.\n * @param {Function} options.callback Function fired after clicking outside of a specified element.\n */\nexport default function clickOutsideHandler( { emitter, activator, callback, contextElement } ) {\n\temitter.listenTo( document, 'mouseup', ( evt, { target } ) => {\n\t\tif ( activator() && !contextElement.contains( target ) ) {\n\t\t\tcallback();\n\t\t}\n\t} );\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-ui/src/bindings/clickoutsidehandler.js\n// module id = 178\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/bindings/submithandler\n */\n\n/**\n * Handles native DOM `submit` event by preventing it and firing\n * the {@link module:ui/view~View view's} `submit` event, which can be then handled by the\n * parent controller.\n *\n * @param {Object} [options] Configuration options.\n * @param {module:ui/view~View} options.view The view to which this behavior should be added.\n */\nexport default function submitHandler( { view } ) {\n\tview.listenTo( view.element, 'submit', ( evt, domEvt ) => {\n\t\tdomEvt.preventDefault();\n\t\tview.fire( 'submit' );\n\t}, { useCapture: true } );\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-ui/src/bindings/submithandler.js\n// module id = 179\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/inputtext/inputtextview\n */\n\nimport View from '../view';\nimport Template from '../template';\n\n/**\n * The text input view class.\n *\n * @extends module:ui/view~View\n */\nexport default class InputTextView extends View {\n\t/**\n\t * @inheritDoc\n\t */\n\tconstructor( locale ) {\n\t\tsuper( locale );\n\n\t\t/**\n\t\t * The value of the input.\n\t\t *\n\t\t * @observable\n\t\t * @member {String} #value\n\t\t */\n\t\tthis.set( 'value' );\n\n\t\t/**\n\t\t * The `id` attribute of the input (i.e. to pair with a `<label>` element).\n\t\t *\n\t\t * @observable\n\t\t * @member {String} #id\n\t\t */\n\t\tthis.set( 'id' );\n\n\t\tconst bind = this.bindTemplate;\n\n\t\tthis.template = new Template( {\n\t\t\ttag: 'input',\n\t\t\tattributes: {\n\t\t\t\ttype: 'text',\n\t\t\t\tclass: [\n\t\t\t\t\t'ck-input',\n\t\t\t\t\t'ck-input-text'\n\t\t\t\t],\n\t\t\t\tid: bind.to( 'id' )\n\t\t\t}\n\t\t} );\n\n\t\t// Note: `value` cannot be an HTML attribute, because it doesn't change HTMLInputElement value once changed.\n\t\tthis.on( 'change:value', ( evt, propertyName, value ) => this.element.value = value || '' );\n\t}\n\n\t/**\n\t * Moves the focus to the input and selects the value.\n\t */\n\tselect() {\n\t\tthis.element.select();\n\t}\n\n\t/**\n\t * Focuses the input.\n\t */\n\tfocus() {\n\t\tthis.element.focus();\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-ui/src/inputtext/inputtextview.js\n// module id = 180\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/labeledinput/labeledinputview\n */\n\nimport View from '../view';\nimport Template from '../template';\nimport uid from '@ckeditor/ckeditor5-utils/src/uid';\n\nimport LabelView from '../label/labelview';\n\n/**\n * The labeled input view class.\n *\n * @extends module:ui/view~View\n */\nexport default class LabeledInputView extends View {\n\t/**\n\t * Creates an instance of the labeled input view class.\n\t *\n\t * @param {module:utils/locale~Locale} locale The locale instance.\n\t * @param {Function} InputView Constructor of the input view.\n\t */\n\tconstructor( locale, InputView ) {\n\t\tsuper( locale );\n\n\t\tconst id = `ck-input-${ uid() }`;\n\n\t\t/**\n\t\t * The text of the label.\n\t\t *\n\t\t * @observable\n\t\t * @member {String} #label\n\t\t */\n\t\tthis.set( 'label' );\n\n\t\t/**\n\t\t * The value of the input.\n\t\t *\n\t\t * @observable\n\t\t * @member {String} #value\n\t\t */\n\t\tthis.set( 'value' );\n\n\t\t/**\n\t\t * The label view.\n\t\t *\n\t\t * @member {module:ui/label/labelview~LabelView} #labelView\n\t\t */\n\t\tthis.labelView = this._createLabelView( id );\n\n\t\t/**\n\t\t * The input view.\n\t\t *\n\t\t * @member {module:ui/view~View} #inputView\n\t\t */\n\t\tthis.inputView = this._createInputView( InputView, id );\n\n\t\tthis.template = new Template( {\n\t\t\ttag: 'div',\n\n\t\t\tchildren: [\n\t\t\t\tthis.labelView,\n\t\t\t\tthis.inputView\n\t\t\t]\n\t\t} );\n\t}\n\n\t/**\n\t * Creates label view class instance and bind with view.\n\t *\n\t * @private\n\t * @param {String} id Unique id to set as labelView#for attribute.\n\t * @returns {module:ui/label/labelview~LabelView}\n\t */\n\t_createLabelView( id ) {\n\t\tconst labelView = new LabelView( this.locale );\n\n\t\tlabelView.for = id;\n\t\tlabelView.bind( 'text' ).to( this, 'label' );\n\n\t\treturn labelView;\n\t}\n\n\t/**\n\t * Creates input view class instance and bind with view.\n\t *\n\t * @private\n\t * @param {Function} InputView Input view constructor.\n\t * @param {String} id Unique id to set as inputView#id attribute.\n\t * @returns {module:ui/inputtext/inputtextview~InputTextView}\n\t */\n\t_createInputView( InputView, id ) {\n\t\tconst inputView = new InputView( this.locale );\n\n\t\tinputView.id = id;\n\t\tinputView.bind( 'value' ).to( this );\n\n\t\treturn inputView;\n\t}\n\n\t/**\n\t * Moves the focus to the input and selects the value.\n\t */\n\tselect() {\n\t\tthis.inputView.select();\n\t}\n\n\t/**\n\t * Focuses the input.\n\t */\n\tfocus() {\n\t\tthis.inputView.focus();\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-ui/src/labeledinput/labeledinputview.js\n// module id = 181\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/panel/balloon/balloonpanelview\n */\n\n/* globals document */\n\nimport View from '../../view';\nimport Template from '../../template';\nimport { getOptimalPosition } from '@ckeditor/ckeditor5-utils/src/dom/position';\nimport toUnit from '@ckeditor/ckeditor5-utils/src/dom/tounit';\n\nconst toPx = toUnit( 'px' );\n\n/**\n * The balloon panel view class.\n *\n * @extends module:ui/view~View\n */\nexport default class BalloonPanelView extends View {\n\t/**\n\t * @inheritDoc\n\t */\n\tconstructor( locale ) {\n\t\tsuper( locale );\n\n\t\tconst bind = this.bindTemplate;\n\n\t\t/**\n\t\t * The absolute top position of the balloon panel in pixels.\n\t\t *\n\t\t * @observable\n\t\t * @default 0\n\t\t * @member {Number} #top\n\t\t */\n\t\tthis.set( 'top', 0 );\n\n\t\t/**\n\t\t * The absolute left position of the balloon panel in pixels.\n\t\t *\n\t\t * @observable\n\t\t * @default 0\n\t\t * @member {Number} #left\n\t\t */\n\t\tthis.set( 'left', 0 );\n\n\t\t/**\n\t\t * Balloon panel's current position. The position name is reflected in the CSS class set\n\t\t * to the balloon, i.e. `.ck-balloon-panel_arrow_se` for \"se\" position. The class\n\t\t * controls the minor aspects of the balloon's visual appearance like placement\n\t\t * of the \"arrow\". To support a new position, an additional CSS must be created.\n\t\t *\n\t\t * Default position names correspond with\n\t\t * {@link module:ui/panel/balloon/balloonpanelview~BalloonPanelView.defaultPositions}.\n\t\t *\n\t\t * @observable\n\t\t * @default 'se'\n\t\t * @member {'se'|'sw'|'ne'|'nw'} #position\n\t\t */\n\t\tthis.set( 'position', 'se' );\n\n\t\t/**\n\t\t * Controls whether the balloon panel is visible or not.\n\t\t *\n\t\t * @observable\n\t\t * @default false\n\t\t * @member {Boolean} #isVisible\n\t\t */\n\t\tthis.set( 'isVisible', false );\n\n\t\t/**\n\t\t * Max width of the balloon panel, as in CSS.\n\t\t *\n\t\t * @observable\n\t\t * @member {Number} #maxWidth\n\t\t */\n\n\t\t/**\n\t\t * Collection of the child views which creates balloon panel contents.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:ui/viewcollection~ViewCollection}\n\t\t */\n\t\tthis.content = this.createCollection();\n\n\t\tthis.template = new Template( {\n\t\t\ttag: 'div',\n\t\t\tattributes: {\n\t\t\t\tclass: [\n\t\t\t\t\t'ck-balloon-panel',\n\t\t\t\t\tbind.to( 'position', ( value ) => `ck-balloon-panel_arrow_${ value }` ),\n\t\t\t\t\tbind.if( 'isVisible', 'ck-balloon-panel_visible' )\n\t\t\t\t],\n\n\t\t\t\tstyle: {\n\t\t\t\t\ttop: bind.to( 'top', toPx ),\n\t\t\t\t\tleft: bind.to( 'left', toPx ),\n\t\t\t\t\tmaxWidth: bind.to( 'maxWidth', toPx )\n\t\t\t\t},\n\n\t\t\t\t// Make this element `focusable` to be available for adding to FocusTracker.\n\t\t\t\ttabindex: -1\n\t\t\t},\n\n\t\t\tchildren: this.content\n\t\t} );\n\t}\n\n\t/**\n\t * Shows the balloon panel.\n\t *\n\t * See {@link #isVisible}.\n\t */\n\tshow() {\n\t\tthis.isVisible = true;\n\t}\n\n\t/**\n\t * Hides the balloon panel.\n\t *\n\t * See {@link #isVisible}.\n\t */\n\thide() {\n\t\tthis.isVisible = false;\n\t}\n\n\t/**\n\t * Attaches the balloon panel to a specified DOM element or range with a smart heuristics.\n\t *\n\t * See {@link @link module:utils/dom/position~getOptimalPosition}.\n\t *\n\t * TODO: More docs and examples.\n\t *\n\t * @param {module:utils/dom/position~Options} options Positioning options compatible with\n\t * {@link module:utils/dom/position~getOptimalPosition}. Default `positions` array is\n\t * {@link module:ui/panel/balloon/balloonpanelview~BalloonPanelView.defaultPositions}.\n\t */\n\tattachTo( options ) {\n\t\tthis.show();\n\n\t\tconst defaultPositions = BalloonPanelView.defaultPositions;\n\t\tconst positionOptions = Object.assign( {}, {\n\t\t\telement: this.element,\n\t\t\tpositions: [\n\t\t\t\tdefaultPositions.se,\n\t\t\t\tdefaultPositions.sw,\n\t\t\t\tdefaultPositions.ne,\n\t\t\t\tdefaultPositions.nw\n\t\t\t],\n\t\t\tlimiter: document.body,\n\t\t\tfitInViewport: true\n\t\t}, options );\n\n\t\tconst { top, left, name: position } = getOptimalPosition( positionOptions );\n\n\t\tObject.assign( this, { top, left, position } );\n\t}\n}\n\n/**\n * A horizontal offset of the arrow tip from the edge of the balloon. Controlled by CSS.\n *\n *\t\t +-----|---------...\n *\t\t |     |\n *\t\t |     |\n *\t\t |     |\n *\t\t |     |\n *\t\t +--+  |  +------...\n *\t\t     \\ | /\n *\t\t      \\|/\n *\t    >|-----|<---------------- horizontal offset\n *\n * @default 30\n * @member {Number} module:ui/panel/balloon/balloonpanelview~BalloonPanelView.arrowHorizontalOffset\n */\nBalloonPanelView.arrowHorizontalOffset = 30;\n\n/**\n * A vertical offset of the arrow from the edge of the balloon. Controlled by CSS.\n *\n *\t\t +-------------...\n *\t\t |\n *\t\t |\n *\t\t |                      /-- vertical offset\n *\t\t |                     V\n *\t\t +--+    +-----...    ---------\n *\t\t     \\  /              |\n *\t\t      \\/               |\n *\t\t-------------------------------\n *\t\t                       ^\n *\n * @default 15\n * @member {Number} module:ui/panel/balloon/balloonpanelview~BalloonPanelView.arrowVerticalOffset\n */\nBalloonPanelView.arrowVerticalOffset = 15;\n\n/**\n * A default set of positioning functions used by the balloon panel view\n * when attaching using {@link module:ui/panel/balloon/balloonpanelview~BalloonPanelView#attachTo} method.\n *\n * The available positioning functions are as follows:\n *\n * * South east:\n *\n *\t\t[ Target ]\n *\t\t    ^\n *\t\t+-----------------+\n *\t\t|     Balloon     |\n *\t\t+-----------------+\n *\n *\n * * South west:\n *\n *\t\t         [ Target ]\n *\t\t              ^\n *\t\t+-----------------+\n *\t\t|     Balloon     |\n *\t\t+-----------------+\n *\n *\n * * North east:\n *\n *\t\t+-----------------+\n *\t\t|     Balloon     |\n *\t\t+-----------------+\n *\t\t    V\n *\t\t[ Target ]\n *\n *\n * * North west:\n *\n *\t\t+-----------------+\n *\t\t|     Balloon     |\n *\t\t+-----------------+\n *\t\t              V\n *\t\t         [ Target ]\n *\n * See {@link module:ui/panel/balloon/balloonpanelview~BalloonPanelView#attachTo}.\n *\n * Positioning functions must be compatible with {@link module:utils/dom/position~Position}.\n *\n * The name that position function returns will be reflected in balloon panel's class that\n * controls the placement of the \"arrow\". See {@link #position} to learn more.\n *\n * @member {Object} module:ui/panel/balloon/balloonpanelview~BalloonPanelView.defaultPositions\n */\nBalloonPanelView.defaultPositions = {\n\tse: ( targetRect ) => ( {\n\t\ttop: targetRect.bottom + BalloonPanelView.arrowVerticalOffset,\n\t\tleft: targetRect.left + targetRect.width / 2 - BalloonPanelView.arrowHorizontalOffset,\n\t\tname: 'se'\n\t} ),\n\n\tsw: ( targetRect, balloonRect ) => ( {\n\t\ttop: targetRect.bottom + BalloonPanelView.arrowVerticalOffset,\n\t\tleft: targetRect.left + targetRect.width / 2 - balloonRect.width + BalloonPanelView.arrowHorizontalOffset,\n\t\tname: 'sw'\n\t} ),\n\n\tne: ( targetRect, balloonRect ) => ( {\n\t\ttop: targetRect.top - balloonRect.height - BalloonPanelView.arrowVerticalOffset,\n\t\tleft: targetRect.left + targetRect.width / 2 - BalloonPanelView.arrowHorizontalOffset,\n\t\tname: 'ne'\n\t} ),\n\n\tnw: ( targetRect, balloonRect ) => ( {\n\t\ttop: targetRect.top - balloonRect.height - BalloonPanelView.arrowVerticalOffset,\n\t\tleft: targetRect.left + targetRect.width / 2 - balloonRect.width + BalloonPanelView.arrowHorizontalOffset,\n\t\tname: 'nw'\n\t} )\n};\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-ui/src/panel/balloon/balloonpanelview.js\n// module id = 182\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/toolbar/toolbarview\n */\n\nimport View from '../view';\nimport Template from '../template';\nimport FocusTracker from '@ckeditor/ckeditor5-utils/src/focustracker';\nimport FocusCycler from '../focuscycler';\nimport KeystrokeHandler from '@ckeditor/ckeditor5-utils/src/keystrokehandler';\nimport ToolbarSeparatorView from './toolbarseparatorview';\n\n/**\n * The toolbar view class.\n *\n * @extends module:ui/view~View\n */\nexport default class ToolbarView extends View {\n\t/**\n\t * @inheritDoc\n\t */\n\tconstructor( locale ) {\n\t\tsuper( locale );\n\n\t\t/**\n\t\t * Collection of the toolbar items (like buttons).\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:ui/viewcollection~ViewCollection}\n\t\t */\n\t\tthis.items = this.createCollection();\n\n\t\t/**\n\t\t * Tracks information about DOM focus in the list.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:utils/focustracker~FocusTracker}\n\t\t */\n\t\tthis.focusTracker = new FocusTracker();\n\n\t\t/**\n\t\t * Instance of the {@link module:utils/keystrokehandler~KeystrokeHandler}.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:utils/keystrokehandler~KeystrokeHandler}\n\t\t */\n\t\tthis.keystrokes = new KeystrokeHandler();\n\n\t\t/**\n\t\t * Helps cycling over focusable {@link #items} in the toolbar.\n\t\t *\n\t\t * @readonly\n\t\t * @protected\n\t\t * @member {module:ui/focuscycler~FocusCycler}\n\t\t */\n\t\tthis._focusCycler = new FocusCycler( {\n\t\t\tfocusables: this.items,\n\t\t\tfocusTracker: this.focusTracker,\n\t\t\tkeystrokeHandler: this.keystrokes,\n\t\t\tactions: {\n\t\t\t\t// Navigate toolbar items backwards using the arrow[left,up] keys.\n\t\t\t\tfocusPrevious: [ 'arrowleft', 'arrowup' ],\n\n\t\t\t\t// Navigate toolbar items forwards using the arrow[right,down] keys.\n\t\t\t\tfocusNext: [ 'arrowright', 'arrowdown' ]\n\t\t\t}\n\t\t} );\n\n\t\tthis.template = new Template( {\n\t\t\ttag: 'div',\n\t\t\tattributes: {\n\t\t\t\tclass: [\n\t\t\t\t\t'ck-toolbar'\n\t\t\t\t]\n\t\t\t},\n\n\t\t\tchildren: this.items\n\t\t} );\n\n\t\tthis.items.on( 'add', ( evt, item ) => {\n\t\t\tthis.focusTracker.add( item.element );\n\t\t} );\n\n\t\tthis.items.on( 'remove', ( evt, item ) => {\n\t\t\tthis.focusTracker.remove( item.element );\n\t\t} );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\t// Start listening for the keystrokes coming from #element.\n\t\tthis.keystrokes.listenTo( this.element );\n\n\t\treturn super.init();\n\t}\n\n\t/**\n\t * Focuses the first focusable in {@link #items}.\n\t */\n\tfocus() {\n\t\tthis._focusCycler.focusFirst();\n\t}\n\n\t/**\n\t * A utility which expands a plain toolbar configuration into\n\t * {@link module:ui/toolbar/toolbarview~ToolbarView#items} using a given component factory.\n\t *\n\t * @param {Array} config The toolbar config.\n\t * @param {module:ui/componentfactory~ComponentFactory} factory A factory producing toolbar items.\n\t * @returns {Promise} A promise resolved when created toolbar items are initialized.\n\t */\n\tfillFromConfig( config, factory ) {\n\t\tif ( !config ) {\n\t\t\treturn Promise.resolve();\n\t\t}\n\n\t\treturn Promise.all( config.map( name => {\n\t\t\tconst component = name == '|' ? new ToolbarSeparatorView() : factory.create( name );\n\n\t\t\treturn this.items.add( component );\n\t\t} ) );\n\t}\n}\n\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-ui/src/toolbar/toolbarview.js\n// module id = 183\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/count\n */\n\n/**\n * Returns the number of items return by the iterator.\n *\n *\t\tcount( [ 1, 2, 3, 4, 5 ] ); // 5;\n *\n * @param {Iterable.<*>} iterator Any iterator.\n * @returns {Number} Number of items returned by that iterator.\n */\nexport default function count( iterator ) {\n\tlet count = 0;\n\n\tfor ( let _ of iterator ) { // jshint ignore:line\n\t\tcount++;\n\t}\n\n\treturn count;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/count.js\n// module id = 184\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/diff\n */\n\n// The following code is based on the \"O(NP) Sequence Comparison Algorithm\"\n// by Sun Wu, Udi Manber, Gene Myers, Webb Miller.\n\n/**\n * Calculates the difference between two arrays or strings producing an array containing a list of changes\n * necessary to transform input into output.\n *\n *\t\tdiff( 'aba', 'acca' ); // [ 'equal', 'insert', 'insert', 'delete', 'equal' ]\n *\n * @param {Array|String} a Input array or string.\n * @param {Array|String} b Output array or string.\n * @param {Function} [cmp] Optional function used to compare array values, by default === is used.\n * @returns {Array} Array of changes.\n */\nexport default function diff( a, b, cmp ) {\n\t// Set the comparator function.\n\tcmp = cmp || function( a, b ) {\n\t\t\treturn a === b;\n\t\t};\n\n\t// Temporary action type statics.\n\tlet _insert, _delete;\n\n\t// Swapped the arrays to use the shorter one as the first one.\n\tif ( b.length < a.length ) {\n\t\tlet tmp = a;\n\n\t\ta = b;\n\t\tb = tmp;\n\n\t\t// We swap the action types as well.\n\t\t_insert = 'delete';\n\t\t_delete = 'insert';\n\t} else {\n\t\t_insert = 'insert';\n\t\t_delete = 'delete';\n\t}\n\n\tconst m = a.length;\n\tconst n = b.length;\n\tconst delta = n - m;\n\n\t// Edit scripts, for each diagonal.\n\tconst es = {};\n\t// Furthest points, the furthest y we can get on each diagonal.\n\tconst fp = {};\n\n\tfunction snake( k ) {\n\t\t// We use -1 as an alternative below to handle initial values ( instead of filling the fp with -1 first ).\n\t\t// Furthest points (y) on the diagonal below k.\n\t\tconst y1 = ( fp[ k - 1 ] !== undefined ? fp[ k - 1 ] : -1 ) + 1;\n\t\t// Furthest points (y) on the diagonal above k.\n\t\tconst y2 = fp[ k + 1 ] !== undefined ? fp[ k + 1 ] : -1;\n\t\t// The way we should go to get further.\n\t\tconst dir = y1 > y2 ? -1 : 1;\n\n\t\t// Clone previous changes array (if any).\n\t\tif ( es[ k + dir ] ) {\n\t\t\tes[ k ] = es[ k + dir ].slice( 0 );\n\t\t}\n\n\t\t// Create changes array.\n\t\tif ( !es[ k ] ) {\n\t\t\tes[ k ] = [];\n\t\t}\n\n\t\t// Push the action.\n\t\tes[ k ].push( y1 > y2 ? _insert : _delete );\n\n\t\t// Set the beginning coordinates.\n\t\tlet y = Math.max( y1, y2 );\n\t\tlet x = y - k;\n\n\t\t// Traverse the diagonal as long as the values match.\n\t\twhile ( x < m && y < n && cmp( a[ x ], b[ y ] ) ) {\n\t\t\tx++;\n\t\t\ty++;\n\t\t\t// Push no change action.\n\t\t\tes[ k ].push( 'equal' );\n\t\t}\n\n\t\treturn y;\n\t}\n\n\tlet p = 0;\n\tlet k;\n\n\t// Traverse the graph until we reach the end of the longer string.\n\tdo {\n\t\t// Updates furthest points and edit scripts for diagonals below delta.\n\t\tfor ( k = -p; k < delta; k++ ) {\n\t\t\tfp[ k ] = snake( k );\n\t\t}\n\n\t\t// Updates furthest points and edit scripts for diagonals above delta.\n\t\tfor ( k = delta + p; k > delta; k-- ) {\n\t\t\tfp[ k ] = snake( k );\n\t\t}\n\n\t\t// Updates furthest point and edit script for the delta diagonal.\n\t\t// note that the delta diagonal is the one which goes through the sink (m, n).\n\t\tfp[ delta ] = snake( delta );\n\n\t\tp++;\n\t} while ( fp[ delta ] !== n );\n\n\t// Return the final list of edit changes.\n\t// We remove the first item that represents the action for the injected nulls.\n\treturn es[ delta ].slice( 1 );\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/diff.js\n// module id = 185\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/* globals Node */\n\n/**\n * @module utils/dom/getancestors\n */\n\n/**\n * Returns all ancestors of given DOM node, starting from the top-most (root). Includes the given node itself. If the\n * node is a part of `DocumentFragment` that `DocumentFragment` will be returned. In contrary, if the node is\n * appended to a `Document`, that `Document` will not be returned (algorithms operating on DOM tree care for `Document#documentElement`\n * at most, which will be returned).\n *\n * @param {Node} node DOM node.\n * @returns {Array.<Node|DocumentFragment>} Array of given `node` parents.\n */\nexport default function getAncestors( node ) {\n\tconst nodes = [];\n\n\t// We are interested in `Node`s `DocumentFragment`s only.\n\twhile ( node && node.nodeType != Node.DOCUMENT_NODE ) {\n\t\tnodes.unshift( node );\n\t\tnode = node.parentNode;\n\t}\n\n\treturn nodes;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/dom/getancestors.js\n// module id = 186\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/dom/tounit\n */\n\n/**\n * Returns a helper function, which adds a desired trailing\n * `unit` to the passed value.\n *\n * @param {String} unit An unit like \"px\" or \"em\".\n * @returns {module:utils/dom/tounit~helper}\n */\nexport default function toUnit( unit ) {\n\t/**\n\t * A function, which adds a pre–defined trailing `unit`\n\t * to the passed `value`.\n\t *\n\t * @function helper\n \t * @param {*} value A value to be given the unit.\n \t * @returns {String} A value with the trailing unit.\n\t */\n\treturn ( value ) => value + unit;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/dom/tounit.js\n// module id = 187\n// module chunks = 0","import getNative from './_getNative';\nimport root from './_root';\n\n/* Built-in method references that are verified to be native. */\nvar Map = getNative(root, 'Map');\n\nexport default Map;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_Map.js\n// module id = 188\n// module chunks = 0","import getNative from './_getNative';\nimport root from './_root';\n\n/* Built-in method references that are verified to be native. */\nvar Set = getNative(root, 'Set');\n\nexport default Set;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_Set.js\n// module id = 189\n// module chunks = 0","import root from './_root';\n\n/** Built-in value references. */\nvar Uint8Array = root.Uint8Array;\n\nexport default Uint8Array;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_Uint8Array.js\n// module id = 190\n// module chunks = 0","/**\n * A faster alternative to `Function#apply`, this function invokes `func`\n * with the `this` binding of `thisArg` and the arguments of `args`.\n *\n * @private\n * @param {Function} func The function to invoke.\n * @param {*} thisArg The `this` binding of `func`.\n * @param {Array} args The arguments to invoke `func` with.\n * @returns {*} Returns the result of `func`.\n */\nfunction apply(func, thisArg, args) {\n  var length = args.length;\n  switch (length) {\n    case 0: return func.call(thisArg);\n    case 1: return func.call(thisArg, args[0]);\n    case 2: return func.call(thisArg, args[0], args[1]);\n    case 3: return func.call(thisArg, args[0], args[1], args[2]);\n  }\n  return func.apply(thisArg, args);\n}\n\nexport default apply;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_apply.js\n// module id = 191\n// module chunks = 0","/**\n * A specialized version of `_.reduce` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @param {*} [accumulator] The initial value.\n * @param {boolean} [initAccum] Specify using the first element of `array` as\n *  the initial value.\n * @returns {*} Returns the accumulated value.\n */\nfunction arrayReduce(array, iteratee, accumulator, initAccum) {\n  var index = -1,\n      length = array.length;\n\n  if (initAccum && length) {\n    accumulator = array[++index];\n  }\n  while (++index < length) {\n    accumulator = iteratee(accumulator, array[index], index, array);\n  }\n  return accumulator;\n}\n\nexport default arrayReduce;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_arrayReduce.js\n// module id = 192\n// module chunks = 0","import Stack from './_Stack';\nimport arrayEach from './_arrayEach';\nimport assignValue from './_assignValue';\nimport baseAssign from './_baseAssign';\nimport cloneBuffer from './_cloneBuffer';\nimport copyArray from './_copyArray';\nimport copySymbols from './_copySymbols';\nimport getAllKeys from './_getAllKeys';\nimport getTag from './_getTag';\nimport initCloneArray from './_initCloneArray';\nimport initCloneByTag from './_initCloneByTag';\nimport initCloneObject from './_initCloneObject';\nimport isArray from './isArray';\nimport isBuffer from './isBuffer';\nimport isHostObject from './_isHostObject';\nimport isObject from './isObject';\nimport keys from './keys';\n\n/** `Object#toString` result references. */\nvar argsTag = '[object Arguments]',\n    arrayTag = '[object Array]',\n    boolTag = '[object Boolean]',\n    dateTag = '[object Date]',\n    errorTag = '[object Error]',\n    funcTag = '[object Function]',\n    genTag = '[object GeneratorFunction]',\n    mapTag = '[object Map]',\n    numberTag = '[object Number]',\n    objectTag = '[object Object]',\n    regexpTag = '[object RegExp]',\n    setTag = '[object Set]',\n    stringTag = '[object String]',\n    symbolTag = '[object Symbol]',\n    weakMapTag = '[object WeakMap]';\n\nvar arrayBufferTag = '[object ArrayBuffer]',\n    dataViewTag = '[object DataView]',\n    float32Tag = '[object Float32Array]',\n    float64Tag = '[object Float64Array]',\n    int8Tag = '[object Int8Array]',\n    int16Tag = '[object Int16Array]',\n    int32Tag = '[object Int32Array]',\n    uint8Tag = '[object Uint8Array]',\n    uint8ClampedTag = '[object Uint8ClampedArray]',\n    uint16Tag = '[object Uint16Array]',\n    uint32Tag = '[object Uint32Array]';\n\n/** Used to identify `toStringTag` values supported by `_.clone`. */\nvar cloneableTags = {};\ncloneableTags[argsTag] = cloneableTags[arrayTag] =\ncloneableTags[arrayBufferTag] = cloneableTags[dataViewTag] =\ncloneableTags[boolTag] = cloneableTags[dateTag] =\ncloneableTags[float32Tag] = cloneableTags[float64Tag] =\ncloneableTags[int8Tag] = cloneableTags[int16Tag] =\ncloneableTags[int32Tag] = cloneableTags[mapTag] =\ncloneableTags[numberTag] = cloneableTags[objectTag] =\ncloneableTags[regexpTag] = cloneableTags[setTag] =\ncloneableTags[stringTag] = cloneableTags[symbolTag] =\ncloneableTags[uint8Tag] = cloneableTags[uint8ClampedTag] =\ncloneableTags[uint16Tag] = cloneableTags[uint32Tag] = true;\ncloneableTags[errorTag] = cloneableTags[funcTag] =\ncloneableTags[weakMapTag] = false;\n\n/**\n * The base implementation of `_.clone` and `_.cloneDeep` which tracks\n * traversed objects.\n *\n * @private\n * @param {*} value The value to clone.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @param {boolean} [isFull] Specify a clone including symbols.\n * @param {Function} [customizer] The function to customize cloning.\n * @param {string} [key] The key of `value`.\n * @param {Object} [object] The parent object of `value`.\n * @param {Object} [stack] Tracks traversed objects and their clone counterparts.\n * @returns {*} Returns the cloned value.\n */\nfunction baseClone(value, isDeep, isFull, customizer, key, object, stack) {\n  var result;\n  if (customizer) {\n    result = object ? customizer(value, key, object, stack) : customizer(value);\n  }\n  if (result !== undefined) {\n    return result;\n  }\n  if (!isObject(value)) {\n    return value;\n  }\n  var isArr = isArray(value);\n  if (isArr) {\n    result = initCloneArray(value);\n    if (!isDeep) {\n      return copyArray(value, result);\n    }\n  } else {\n    var tag = getTag(value),\n        isFunc = tag == funcTag || tag == genTag;\n\n    if (isBuffer(value)) {\n      return cloneBuffer(value, isDeep);\n    }\n    if (tag == objectTag || tag == argsTag || (isFunc && !object)) {\n      if (isHostObject(value)) {\n        return object ? value : {};\n      }\n      result = initCloneObject(isFunc ? {} : value);\n      if (!isDeep) {\n        return copySymbols(value, baseAssign(result, value));\n      }\n    } else {\n      if (!cloneableTags[tag]) {\n        return object ? value : {};\n      }\n      result = initCloneByTag(value, tag, baseClone, isDeep);\n    }\n  }\n  // Check for circular references and return its corresponding clone.\n  stack || (stack = new Stack);\n  var stacked = stack.get(value);\n  if (stacked) {\n    return stacked;\n  }\n  stack.set(value, result);\n\n  if (!isArr) {\n    var props = isFull ? getAllKeys(value) : keys(value);\n  }\n  // Recursively populate clone (susceptible to call stack limits).\n  arrayEach(props || value, function(subValue, key) {\n    if (props) {\n      key = subValue;\n      subValue = value[key];\n    }\n    assignValue(result, key, baseClone(subValue, isDeep, isFull, customizer, key, value, stack));\n  });\n  return result;\n}\n\nexport default baseClone;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_baseClone.js\n// module id = 193\n// module chunks = 0","/**\n * The base implementation of `_.findIndex` and `_.findLastIndex` without\n * support for iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to search.\n * @param {Function} predicate The function invoked per iteration.\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\nfunction baseFindIndex(array, predicate, fromRight) {\n  var length = array.length,\n      index = fromRight ? length : -1;\n\n  while ((fromRight ? index-- : ++index < length)) {\n    if (predicate(array[index], index, array)) {\n      return index;\n    }\n  }\n  return -1;\n}\n\nexport default baseFindIndex;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_baseFindIndex.js\n// module id = 194\n// module chunks = 0","import getPrototype from './_getPrototype';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/**\n * The base implementation of `_.has` without support for deep paths.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array|string} key The key to check.\n * @returns {boolean} Returns `true` if `key` exists, else `false`.\n */\nfunction baseHas(object, key) {\n  // Avoid a bug in IE 10-11 where objects with a [[Prototype]] of `null`,\n  // that are composed entirely of index properties, return `false` for\n  // `hasOwnProperty` checks of them.\n  return hasOwnProperty.call(object, key) ||\n    (typeof object == 'object' && key in object && getPrototype(object) === null);\n}\n\nexport default baseHas;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_baseHas.js\n// module id = 195\n// module chunks = 0","import castPath from './_castPath';\nimport isIndex from './_isIndex';\nimport isKey from './_isKey';\nimport last from './last';\nimport parent from './_parent';\nimport toKey from './_toKey';\n\n/** Used for built-in method references. */\nvar arrayProto = Array.prototype;\n\n/** Built-in value references. */\nvar splice = arrayProto.splice;\n\n/**\n * The base implementation of `_.pullAt` without support for individual\n * indexes or capturing the removed elements.\n *\n * @private\n * @param {Array} array The array to modify.\n * @param {number[]} indexes The indexes of elements to remove.\n * @returns {Array} Returns `array`.\n */\nfunction basePullAt(array, indexes) {\n  var length = array ? indexes.length : 0,\n      lastIndex = length - 1;\n\n  while (length--) {\n    var index = indexes[length];\n    if (length == lastIndex || index !== previous) {\n      var previous = index;\n      if (isIndex(index)) {\n        splice.call(array, index, 1);\n      }\n      else if (!isKey(index, array)) {\n        var path = castPath(index),\n            object = parent(array, path);\n\n        if (object != null) {\n          delete object[toKey(last(path))];\n        }\n      }\n      else {\n        delete array[toKey(index)];\n      }\n    }\n  }\n  return array;\n}\n\nexport default basePullAt;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_basePullAt.js\n// module id = 196\n// module chunks = 0","import eq from './eq';\n\n/**\n * The base implementation of `_.sortedUniq` and `_.sortedUniqBy` without\n * support for iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @returns {Array} Returns the new duplicate free array.\n */\nfunction baseSortedUniq(array, iteratee) {\n  var index = -1,\n      length = array.length,\n      resIndex = 0,\n      result = [];\n\n  while (++index < length) {\n    var value = array[index],\n        computed = iteratee ? iteratee(value) : value;\n\n    if (!index || !eq(computed, seen)) {\n      var seen = computed;\n      result[resIndex++] = value === 0 ? 0 : value;\n    }\n  }\n  return result;\n}\n\nexport default baseSortedUniq;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_baseSortedUniq.js\n// module id = 197\n// module chunks = 0","/**\n * The base implementation of `_.times` without support for iteratee shorthands\n * or max array length checks.\n *\n * @private\n * @param {number} n The number of times to invoke `iteratee`.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array} Returns the array of results.\n */\nfunction baseTimes(n, iteratee) {\n  var index = -1,\n      result = Array(n);\n\n  while (++index < n) {\n    result[index] = iteratee(index);\n  }\n  return result;\n}\n\nexport default baseTimes;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_baseTimes.js\n// module id = 198\n// module chunks = 0","/**\n * This base implementation of `_.zipObject` which assigns values using `assignFunc`.\n *\n * @private\n * @param {Array} props The property identifiers.\n * @param {Array} values The property values.\n * @param {Function} assignFunc The function to assign values.\n * @returns {Object} Returns the new object.\n */\nfunction baseZipObject(props, values, assignFunc) {\n  var index = -1,\n      length = props.length,\n      valsLength = values.length,\n      result = {};\n\n  while (++index < length) {\n    var value = index < valsLength ? values[index] : undefined;\n    assignFunc(result, props[index], value);\n  }\n  return result;\n}\n\nexport default baseZipObject;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_baseZipObject.js\n// module id = 199\n// module chunks = 0","/**\n * Copies the values of `source` to `array`.\n *\n * @private\n * @param {Array} source The array to copy values from.\n * @param {Array} [array=[]] The array to copy values to.\n * @returns {Array} Returns `array`.\n */\nfunction copyArray(source, array) {\n  var index = -1,\n      length = source.length;\n\n  array || (array = Array(length));\n  while (++index < length) {\n    array[index] = source[index];\n  }\n  return array;\n}\n\nexport default copyArray;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_copyArray.js\n// module id = 200\n// module chunks = 0","import SetCache from './_SetCache';\nimport arraySome from './_arraySome';\n\n/** Used to compose bitmasks for comparison styles. */\nvar UNORDERED_COMPARE_FLAG = 1,\n    PARTIAL_COMPARE_FLAG = 2;\n\n/**\n * A specialized version of `baseIsEqualDeep` for arrays with support for\n * partial deep comparisons.\n *\n * @private\n * @param {Array} array The array to compare.\n * @param {Array} other The other array to compare.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Function} customizer The function to customize comparisons.\n * @param {number} bitmask The bitmask of comparison flags. See `baseIsEqual`\n *  for more details.\n * @param {Object} stack Tracks traversed `array` and `other` objects.\n * @returns {boolean} Returns `true` if the arrays are equivalent, else `false`.\n */\nfunction equalArrays(array, other, equalFunc, customizer, bitmask, stack) {\n  var isPartial = bitmask & PARTIAL_COMPARE_FLAG,\n      arrLength = array.length,\n      othLength = other.length;\n\n  if (arrLength != othLength && !(isPartial && othLength > arrLength)) {\n    return false;\n  }\n  // Assume cyclic values are equal.\n  var stacked = stack.get(array);\n  if (stacked) {\n    return stacked == other;\n  }\n  var index = -1,\n      result = true,\n      seen = (bitmask & UNORDERED_COMPARE_FLAG) ? new SetCache : undefined;\n\n  stack.set(array, other);\n\n  // Ignore non-index properties.\n  while (++index < arrLength) {\n    var arrValue = array[index],\n        othValue = other[index];\n\n    if (customizer) {\n      var compared = isPartial\n        ? customizer(othValue, arrValue, index, other, array, stack)\n        : customizer(arrValue, othValue, index, array, other, stack);\n    }\n    if (compared !== undefined) {\n      if (compared) {\n        continue;\n      }\n      result = false;\n      break;\n    }\n    // Recursively compare arrays (susceptible to call stack limits).\n    if (seen) {\n      if (!arraySome(other, function(othValue, othIndex) {\n            if (!seen.has(othIndex) &&\n                (arrValue === othValue || equalFunc(arrValue, othValue, customizer, bitmask, stack))) {\n              return seen.add(othIndex);\n            }\n          })) {\n        result = false;\n        break;\n      }\n    } else if (!(\n          arrValue === othValue ||\n            equalFunc(arrValue, othValue, customizer, bitmask, stack)\n        )) {\n      result = false;\n      break;\n    }\n  }\n  stack['delete'](array);\n  return result;\n}\n\nexport default equalArrays;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_equalArrays.js\n// module id = 201\n// module chunks = 0","/** Built-in value references. */\nvar getOwnPropertySymbols = Object.getOwnPropertySymbols;\n\n/**\n * Creates an array of the own enumerable symbol properties of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of symbols.\n */\nfunction getSymbols(object) {\n  // Coerce `object` to an object to avoid non-object errors in V8.\n  // See https://bugs.chromium.org/p/v8/issues/detail?id=3443 for more details.\n  return getOwnPropertySymbols(Object(object));\n}\n\n// Fallback for IE < 11.\nif (!getOwnPropertySymbols) {\n  getSymbols = function() {\n    return [];\n  };\n}\n\nexport default getSymbols;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_getSymbols.js\n// module id = 202\n// module chunks = 0","import baseTimes from './_baseTimes';\nimport isArguments from './isArguments';\nimport isArray from './isArray';\nimport isLength from './isLength';\nimport isString from './isString';\n\n/**\n * Creates an array of index keys for `object` values of arrays,\n * `arguments` objects, and strings, otherwise `null` is returned.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array|null} Returns index keys, else `null`.\n */\nfunction indexKeys(object) {\n  var length = object ? object.length : undefined;\n  if (isLength(length) &&\n      (isArray(object) || isString(object) || isArguments(object))) {\n    return baseTimes(length, String);\n  }\n  return null;\n}\n\nexport default indexKeys;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_indexKeys.js\n// module id = 203\n// module chunks = 0","/**\n * Gets the index at which the first occurrence of `NaN` is found in `array`.\n *\n * @private\n * @param {Array} array The array to search.\n * @param {number} fromIndex The index to search from.\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {number} Returns the index of the matched `NaN`, else `-1`.\n */\nfunction indexOfNaN(array, fromIndex, fromRight) {\n  var length = array.length,\n      index = fromIndex + (fromRight ? 0 : -1);\n\n  while ((fromRight ? index-- : ++index < length)) {\n    var other = array[index];\n    if (other !== other) {\n      return index;\n    }\n  }\n  return -1;\n}\n\nexport default indexOfNaN;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_indexOfNaN.js\n// module id = 204\n// module chunks = 0","import isObject from './isObject';\n\n/**\n * Checks if `value` is suitable for strict equality comparisons, i.e. `===`.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` if suitable for strict\n *  equality comparisons, else `false`.\n */\nfunction isStrictComparable(value) {\n  return value === value && !isObject(value);\n}\n\nexport default isStrictComparable;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_isStrictComparable.js\n// module id = 205\n// module chunks = 0","/**\n * A specialized version of `matchesProperty` for source values suitable\n * for strict equality comparisons, i.e. `===`.\n *\n * @private\n * @param {string} key The key of the property to get.\n * @param {*} srcValue The value to match.\n * @returns {Function} Returns the new spec function.\n */\nfunction matchesStrictComparable(key, srcValue) {\n  return function(object) {\n    if (object == null) {\n      return false;\n    }\n    return object[key] === srcValue &&\n      (srcValue !== undefined || (key in Object(object)));\n  };\n}\n\nexport default matchesStrictComparable;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_matchesStrictComparable.js\n// module id = 206\n// module chunks = 0","/** Used to resolve the decompiled source of functions. */\nvar funcToString = Function.prototype.toString;\n\n/**\n * Converts `func` to its source code.\n *\n * @private\n * @param {Function} func The function to process.\n * @returns {string} Returns the source code.\n */\nfunction toSource(func) {\n  if (func != null) {\n    try {\n      return funcToString.call(func);\n    } catch (e) {}\n    try {\n      return (func + '');\n    } catch (e) {}\n  }\n  return '';\n}\n\nexport default toSource;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_toSource.js\n// module id = 207\n// module chunks = 0","import baseSlice from './_baseSlice';\nimport isIterateeCall from './_isIterateeCall';\nimport toInteger from './toInteger';\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeCeil = Math.ceil,\n    nativeMax = Math.max;\n\n/**\n * Creates an array of elements split into groups the length of `size`.\n * If `array` can't be split evenly, the final chunk will be the remaining\n * elements.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to process.\n * @param {number} [size=1] The length of each chunk\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the new array of chunks.\n * @example\n *\n * _.chunk(['a', 'b', 'c', 'd'], 2);\n * // => [['a', 'b'], ['c', 'd']]\n *\n * _.chunk(['a', 'b', 'c', 'd'], 3);\n * // => [['a', 'b', 'c'], ['d']]\n */\nfunction chunk(array, size, guard) {\n  if ((guard ? isIterateeCall(array, size, guard) : size === undefined)) {\n    size = 1;\n  } else {\n    size = nativeMax(toInteger(size), 0);\n  }\n  var length = array ? array.length : 0;\n  if (!length || size < 1) {\n    return [];\n  }\n  var index = 0,\n      resIndex = 0,\n      result = Array(nativeCeil(length / size));\n\n  while (index < length) {\n    result[resIndex++] = baseSlice(array, index, (index += size));\n  }\n  return result;\n}\n\nexport default chunk;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/chunk.js\n// module id = 208\n// module chunks = 0","/**\n * Creates an array with all falsey values removed. The values `false`, `null`,\n * `0`, `\"\"`, `undefined`, and `NaN` are falsey.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to compact.\n * @returns {Array} Returns the new array of filtered values.\n * @example\n *\n * _.compact([0, 1, false, 2, '', 3]);\n * // => [1, 2, 3]\n */\nfunction compact(array) {\n  var index = -1,\n      length = array ? array.length : 0,\n      resIndex = 0,\n      result = [];\n\n  while (++index < length) {\n    var value = array[index];\n    if (value) {\n      result[resIndex++] = value;\n    }\n  }\n  return result;\n}\n\nexport default compact;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/compact.js\n// module id = 209\n// module chunks = 0","import arrayPush from './_arrayPush';\nimport baseFlatten from './_baseFlatten';\nimport copyArray from './_copyArray';\nimport isArray from './isArray';\n\n/**\n * Creates a new array concatenating `array` with any additional arrays\n * and/or values.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to concatenate.\n * @param {...*} [values] The values to concatenate.\n * @returns {Array} Returns the new concatenated array.\n * @example\n *\n * var array = [1];\n * var other = _.concat(array, 2, [3], [[4]]);\n *\n * console.log(other);\n * // => [1, 2, 3, [4]]\n *\n * console.log(array);\n * // => [1]\n */\nfunction concat() {\n  var length = arguments.length,\n      args = Array(length ? length - 1 : 0),\n      array = arguments[0],\n      index = length;\n\n  while (index--) {\n    args[index - 1] = arguments[index];\n  }\n  return length\n    ? arrayPush(isArray(array) ? copyArray(array) : [array], baseFlatten(args, 1))\n    : [];\n}\n\nexport default concat;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/concat.js\n// module id = 210\n// module chunks = 0","import baseDifference from './_baseDifference';\nimport baseFlatten from './_baseFlatten';\nimport isArrayLikeObject from './isArrayLikeObject';\nimport rest from './rest';\n\n/**\n * Creates an array of unique `array` values not included in the other given\n * arrays using [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)\n * for equality comparisons. The order of result values is determined by the\n * order they occur in the first array.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {...Array} [values] The values to exclude.\n * @returns {Array} Returns the new array of filtered values.\n * @see _.without, _.xor\n * @example\n *\n * _.difference([3, 2, 1], [4, 2]);\n * // => [3, 1]\n */\nvar difference = rest(function(array, values) {\n  return isArrayLikeObject(array)\n    ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true))\n    : [];\n});\n\nexport default difference;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/difference.js\n// module id = 211\n// module chunks = 0","import baseDifference from './_baseDifference';\nimport baseFlatten from './_baseFlatten';\nimport baseIteratee from './_baseIteratee';\nimport isArrayLikeObject from './isArrayLikeObject';\nimport last from './last';\nimport rest from './rest';\n\n/**\n * This method is like `_.difference` except that it accepts `iteratee` which\n * is invoked for each element of `array` and `values` to generate the criterion\n * by which they're compared. Result values are chosen from the first array.\n * The iteratee is invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {...Array} [values] The values to exclude.\n * @param {Array|Function|Object|string} [iteratee=_.identity]\n *  The iteratee invoked per element.\n * @returns {Array} Returns the new array of filtered values.\n * @example\n *\n * _.differenceBy([3.1, 2.2, 1.3], [4.4, 2.5], Math.floor);\n * // => [3.1, 1.3]\n *\n * // The `_.property` iteratee shorthand.\n * _.differenceBy([{ 'x': 2 }, { 'x': 1 }], [{ 'x': 1 }], 'x');\n * // => [{ 'x': 2 }]\n */\nvar differenceBy = rest(function(array, values) {\n  var iteratee = last(values);\n  if (isArrayLikeObject(iteratee)) {\n    iteratee = undefined;\n  }\n  return isArrayLikeObject(array)\n    ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), baseIteratee(iteratee))\n    : [];\n});\n\nexport default differenceBy;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/differenceBy.js\n// module id = 212\n// module chunks = 0","import baseDifference from './_baseDifference';\nimport baseFlatten from './_baseFlatten';\nimport isArrayLikeObject from './isArrayLikeObject';\nimport last from './last';\nimport rest from './rest';\n\n/**\n * This method is like `_.difference` except that it accepts `comparator`\n * which is invoked to compare elements of `array` to `values`. Result values\n * are chosen from the first array. The comparator is invoked with two arguments:\n * (arrVal, othVal).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {...Array} [values] The values to exclude.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of filtered values.\n * @example\n *\n * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n *\n * _.differenceWith(objects, [{ 'x': 1, 'y': 2 }], _.isEqual);\n * // => [{ 'x': 2, 'y': 1 }]\n */\nvar differenceWith = rest(function(array, values) {\n  var comparator = last(values);\n  if (isArrayLikeObject(comparator)) {\n    comparator = undefined;\n  }\n  return isArrayLikeObject(array)\n    ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), undefined, comparator)\n    : [];\n});\n\nexport default differenceWith;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/differenceWith.js\n// module id = 213\n// module chunks = 0","import baseIteratee from './_baseIteratee';\nimport baseWhile from './_baseWhile';\n\n/**\n * Creates a slice of `array` excluding elements dropped from the end.\n * Elements are dropped until `predicate` returns falsey. The predicate is\n * invoked with three arguments: (value, index, array).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {Array|Function|Object|string} [predicate=_.identity]\n *  The function invoked per iteration.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * var users = [\n *   { 'user': 'barney',  'active': true },\n *   { 'user': 'fred',    'active': false },\n *   { 'user': 'pebbles', 'active': false }\n * ];\n *\n * _.dropRightWhile(users, function(o) { return !o.active; });\n * // => objects for ['barney']\n *\n * // The `_.matches` iteratee shorthand.\n * _.dropRightWhile(users, { 'user': 'pebbles', 'active': false });\n * // => objects for ['barney', 'fred']\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.dropRightWhile(users, ['active', false]);\n * // => objects for ['barney']\n *\n * // The `_.property` iteratee shorthand.\n * _.dropRightWhile(users, 'active');\n * // => objects for ['barney', 'fred', 'pebbles']\n */\nfunction dropRightWhile(array, predicate) {\n  return (array && array.length)\n    ? baseWhile(array, baseIteratee(predicate, 3), true, true)\n    : [];\n}\n\nexport default dropRightWhile;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/dropRightWhile.js\n// module id = 214\n// module chunks = 0","import baseIteratee from './_baseIteratee';\nimport baseWhile from './_baseWhile';\n\n/**\n * Creates a slice of `array` excluding elements dropped from the beginning.\n * Elements are dropped until `predicate` returns falsey. The predicate is\n * invoked with three arguments: (value, index, array).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {Array|Function|Object|string} [predicate=_.identity]\n *  The function invoked per iteration.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * var users = [\n *   { 'user': 'barney',  'active': false },\n *   { 'user': 'fred',    'active': false },\n *   { 'user': 'pebbles', 'active': true }\n * ];\n *\n * _.dropWhile(users, function(o) { return !o.active; });\n * // => objects for ['pebbles']\n *\n * // The `_.matches` iteratee shorthand.\n * _.dropWhile(users, { 'user': 'barney', 'active': false });\n * // => objects for ['fred', 'pebbles']\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.dropWhile(users, ['active', false]);\n * // => objects for ['pebbles']\n *\n * // The `_.property` iteratee shorthand.\n * _.dropWhile(users, 'active');\n * // => objects for ['barney', 'fred', 'pebbles']\n */\nfunction dropWhile(array, predicate) {\n  return (array && array.length)\n    ? baseWhile(array, baseIteratee(predicate, 3), true)\n    : [];\n}\n\nexport default dropWhile;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/dropWhile.js\n// module id = 215\n// module chunks = 0","import baseFill from './_baseFill';\nimport isIterateeCall from './_isIterateeCall';\n\n/**\n * Fills elements of `array` with `value` from `start` up to, but not\n * including, `end`.\n *\n * **Note:** This method mutates `array`.\n *\n * @static\n * @memberOf _\n * @since 3.2.0\n * @category Array\n * @param {Array} array The array to fill.\n * @param {*} value The value to fill `array` with.\n * @param {number} [start=0] The start position.\n * @param {number} [end=array.length] The end position.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = [1, 2, 3];\n *\n * _.fill(array, 'a');\n * console.log(array);\n * // => ['a', 'a', 'a']\n *\n * _.fill(Array(3), 2);\n * // => [2, 2, 2]\n *\n * _.fill([4, 6, 8, 10], '*', 1, 3);\n * // => [4, '*', '*', 10]\n */\nfunction fill(array, value, start, end) {\n  var length = array ? array.length : 0;\n  if (!length) {\n    return [];\n  }\n  if (start && typeof start != 'number' && isIterateeCall(array, value, start)) {\n    start = 0;\n    end = length;\n  }\n  return baseFill(array, value, start, end);\n}\n\nexport default fill;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/fill.js\n// module id = 216\n// module chunks = 0","import baseFindIndex from './_baseFindIndex';\nimport baseIteratee from './_baseIteratee';\n\n/**\n * This method is like `_.find` except that it returns the index of the first\n * element `predicate` returns truthy for instead of the element itself.\n *\n * @static\n * @memberOf _\n * @since 1.1.0\n * @category Array\n * @param {Array} array The array to search.\n * @param {Array|Function|Object|string} [predicate=_.identity]\n *  The function invoked per iteration.\n * @returns {number} Returns the index of the found element, else `-1`.\n * @example\n *\n * var users = [\n *   { 'user': 'barney',  'active': false },\n *   { 'user': 'fred',    'active': false },\n *   { 'user': 'pebbles', 'active': true }\n * ];\n *\n * _.findIndex(users, function(o) { return o.user == 'barney'; });\n * // => 0\n *\n * // The `_.matches` iteratee shorthand.\n * _.findIndex(users, { 'user': 'fred', 'active': false });\n * // => 1\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.findIndex(users, ['active', false]);\n * // => 0\n *\n * // The `_.property` iteratee shorthand.\n * _.findIndex(users, 'active');\n * // => 2\n */\nfunction findIndex(array, predicate) {\n  return (array && array.length)\n    ? baseFindIndex(array, baseIteratee(predicate, 3))\n    : -1;\n}\n\nexport default findIndex;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/findIndex.js\n// module id = 217\n// module chunks = 0","import baseFindIndex from './_baseFindIndex';\nimport baseIteratee from './_baseIteratee';\n\n/**\n * This method is like `_.findIndex` except that it iterates over elements\n * of `collection` from right to left.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Array\n * @param {Array} array The array to search.\n * @param {Array|Function|Object|string} [predicate=_.identity]\n *  The function invoked per iteration.\n * @returns {number} Returns the index of the found element, else `-1`.\n * @example\n *\n * var users = [\n *   { 'user': 'barney',  'active': true },\n *   { 'user': 'fred',    'active': false },\n *   { 'user': 'pebbles', 'active': false }\n * ];\n *\n * _.findLastIndex(users, function(o) { return o.user == 'pebbles'; });\n * // => 2\n *\n * // The `_.matches` iteratee shorthand.\n * _.findLastIndex(users, { 'user': 'barney', 'active': true });\n * // => 0\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.findLastIndex(users, ['active', false]);\n * // => 2\n *\n * // The `_.property` iteratee shorthand.\n * _.findLastIndex(users, 'active');\n * // => 0\n */\nfunction findLastIndex(array, predicate) {\n  return (array && array.length)\n    ? baseFindIndex(array, baseIteratee(predicate, 3), true)\n    : -1;\n}\n\nexport default findLastIndex;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/findLastIndex.js\n// module id = 218\n// module chunks = 0","export { default } from './head'\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/first.js\n// module id = 219\n// module chunks = 0","import baseFlatten from './_baseFlatten';\n\n/**\n * Flattens `array` a single level deep.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to flatten.\n * @returns {Array} Returns the new flattened array.\n * @example\n *\n * _.flatten([1, [2, [3, [4]], 5]]);\n * // => [1, 2, [3, [4]], 5]\n */\nfunction flatten(array) {\n  var length = array ? array.length : 0;\n  return length ? baseFlatten(array, 1) : [];\n}\n\nexport default flatten;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/flatten.js\n// module id = 220\n// module chunks = 0","import baseFlatten from './_baseFlatten';\n\n/** Used as references for various `Number` constants. */\nvar INFINITY = 1 / 0;\n\n/**\n * Recursively flattens `array`.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to flatten.\n * @returns {Array} Returns the new flattened array.\n * @example\n *\n * _.flattenDeep([1, [2, [3, [4]], 5]]);\n * // => [1, 2, 3, 4, 5]\n */\nfunction flattenDeep(array) {\n  var length = array ? array.length : 0;\n  return length ? baseFlatten(array, INFINITY) : [];\n}\n\nexport default flattenDeep;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/flattenDeep.js\n// module id = 221\n// module chunks = 0","import baseFlatten from './_baseFlatten';\nimport toInteger from './toInteger';\n\n/**\n * Recursively flatten `array` up to `depth` times.\n *\n * @static\n * @memberOf _\n * @since 4.4.0\n * @category Array\n * @param {Array} array The array to flatten.\n * @param {number} [depth=1] The maximum recursion depth.\n * @returns {Array} Returns the new flattened array.\n * @example\n *\n * var array = [1, [2, [3, [4]], 5]];\n *\n * _.flattenDepth(array, 1);\n * // => [1, 2, [3, [4]], 5]\n *\n * _.flattenDepth(array, 2);\n * // => [1, 2, 3, [4], 5]\n */\nfunction flattenDepth(array, depth) {\n  var length = array ? array.length : 0;\n  if (!length) {\n    return [];\n  }\n  depth = depth === undefined ? 1 : toInteger(depth);\n  return baseFlatten(array, depth);\n}\n\nexport default flattenDepth;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/flattenDepth.js\n// module id = 222\n// module chunks = 0","/**\n * The inverse of `_.toPairs`; this method returns an object composed\n * from key-value `pairs`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} pairs The key-value pairs.\n * @returns {Object} Returns the new object.\n * @example\n *\n * _.fromPairs([['fred', 30], ['barney', 40]]);\n * // => { 'fred': 30, 'barney': 40 }\n */\nfunction fromPairs(pairs) {\n  var index = -1,\n      length = pairs ? pairs.length : 0,\n      result = {};\n\n  while (++index < length) {\n    var pair = pairs[index];\n    result[pair[0]] = pair[1];\n  }\n  return result;\n}\n\nexport default fromPairs;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/fromPairs.js\n// module id = 223\n// module chunks = 0","import baseGet from './_baseGet';\n\n/**\n * Gets the value at `path` of `object`. If the resolved value is\n * `undefined`, the `defaultValue` is used in its place.\n *\n * @static\n * @memberOf _\n * @since 3.7.0\n * @category Object\n * @param {Object} object The object to query.\n * @param {Array|string} path The path of the property to get.\n * @param {*} [defaultValue] The value returned for `undefined` resolved values.\n * @returns {*} Returns the resolved value.\n * @example\n *\n * var object = { 'a': [{ 'b': { 'c': 3 } }] };\n *\n * _.get(object, 'a[0].b.c');\n * // => 3\n *\n * _.get(object, ['a', '0', 'b', 'c']);\n * // => 3\n *\n * _.get(object, 'a.b.c', 'default');\n * // => 'default'\n */\nfunction get(object, path, defaultValue) {\n  var result = object == null ? undefined : baseGet(object, path);\n  return result === undefined ? defaultValue : result;\n}\n\nexport default get;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/get.js\n// module id = 224\n// module chunks = 0","/**\n * This method returns the first argument given to it.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Util\n * @param {*} value Any value.\n * @returns {*} Returns `value`.\n * @example\n *\n * var object = { 'user': 'fred' };\n *\n * _.identity(object) === object;\n * // => true\n */\nfunction identity(value) {\n  return value;\n}\n\nexport default identity;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/identity.js\n// module id = 225\n// module chunks = 0","import baseIndexOf from './_baseIndexOf';\nimport toInteger from './toInteger';\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeMax = Math.max;\n\n/**\n * Gets the index at which the first occurrence of `value` is found in `array`\n * using [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)\n * for equality comparisons. If `fromIndex` is negative, it's used as the\n * offset from the end of `array`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to search.\n * @param {*} value The value to search for.\n * @param {number} [fromIndex=0] The index to search from.\n * @returns {number} Returns the index of the matched value, else `-1`.\n * @example\n *\n * _.indexOf([1, 2, 1, 2], 2);\n * // => 1\n *\n * // Search from the `fromIndex`.\n * _.indexOf([1, 2, 1, 2], 2, 2);\n * // => 3\n */\nfunction indexOf(array, value, fromIndex) {\n  var length = array ? array.length : 0;\n  if (!length) {\n    return -1;\n  }\n  fromIndex = toInteger(fromIndex);\n  if (fromIndex < 0) {\n    fromIndex = nativeMax(length + fromIndex, 0);\n  }\n  return baseIndexOf(array, value, fromIndex);\n}\n\nexport default indexOf;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/indexOf.js\n// module id = 226\n// module chunks = 0","import dropRight from './dropRight';\n\n/**\n * Gets all but the last element of `array`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to query.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.initial([1, 2, 3]);\n * // => [1, 2]\n */\nfunction initial(array) {\n  return dropRight(array, 1);\n}\n\nexport default initial;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/initial.js\n// module id = 227\n// module chunks = 0","import arrayMap from './_arrayMap';\nimport baseIntersection from './_baseIntersection';\nimport castArrayLikeObject from './_castArrayLikeObject';\nimport rest from './rest';\n\n/**\n * Creates an array of unique values that are included in all given arrays\n * using [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)\n * for equality comparisons. The order of result values is determined by the\n * order they occur in the first array.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @returns {Array} Returns the new array of intersecting values.\n * @example\n *\n * _.intersection([2, 1], [4, 2], [1, 2]);\n * // => [2]\n */\nvar intersection = rest(function(arrays) {\n  var mapped = arrayMap(arrays, castArrayLikeObject);\n  return (mapped.length && mapped[0] === arrays[0])\n    ? baseIntersection(mapped)\n    : [];\n});\n\nexport default intersection;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/intersection.js\n// module id = 228\n// module chunks = 0","import arrayMap from './_arrayMap';\nimport baseIntersection from './_baseIntersection';\nimport baseIteratee from './_baseIteratee';\nimport castArrayLikeObject from './_castArrayLikeObject';\nimport last from './last';\nimport rest from './rest';\n\n/**\n * This method is like `_.intersection` except that it accepts `iteratee`\n * which is invoked for each element of each `arrays` to generate the criterion\n * by which they're compared. Result values are chosen from the first array.\n * The iteratee is invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Array|Function|Object|string} [iteratee=_.identity]\n *  The iteratee invoked per element.\n * @returns {Array} Returns the new array of intersecting values.\n * @example\n *\n * _.intersectionBy([2.1, 1.2], [4.3, 2.4], Math.floor);\n * // => [2.1]\n *\n * // The `_.property` iteratee shorthand.\n * _.intersectionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');\n * // => [{ 'x': 1 }]\n */\nvar intersectionBy = rest(function(arrays) {\n  var iteratee = last(arrays),\n      mapped = arrayMap(arrays, castArrayLikeObject);\n\n  if (iteratee === last(mapped)) {\n    iteratee = undefined;\n  } else {\n    mapped.pop();\n  }\n  return (mapped.length && mapped[0] === arrays[0])\n    ? baseIntersection(mapped, baseIteratee(iteratee))\n    : [];\n});\n\nexport default intersectionBy;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/intersectionBy.js\n// module id = 229\n// module chunks = 0","import arrayMap from './_arrayMap';\nimport baseIntersection from './_baseIntersection';\nimport castArrayLikeObject from './_castArrayLikeObject';\nimport last from './last';\nimport rest from './rest';\n\n/**\n * This method is like `_.intersection` except that it accepts `comparator`\n * which is invoked to compare elements of `arrays`. Result values are chosen\n * from the first array. The comparator is invoked with two arguments:\n * (arrVal, othVal).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of intersecting values.\n * @example\n *\n * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];\n *\n * _.intersectionWith(objects, others, _.isEqual);\n * // => [{ 'x': 1, 'y': 2 }]\n */\nvar intersectionWith = rest(function(arrays) {\n  var comparator = last(arrays),\n      mapped = arrayMap(arrays, castArrayLikeObject);\n\n  if (comparator === last(mapped)) {\n    comparator = undefined;\n  } else {\n    mapped.pop();\n  }\n  return (mapped.length && mapped[0] === arrays[0])\n    ? baseIntersection(mapped, undefined, comparator)\n    : [];\n});\n\nexport default intersectionWith;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/intersectionWith.js\n// module id = 230\n// module chunks = 0","import isFunction from './isFunction';\nimport isHostObject from './_isHostObject';\nimport isObject from './isObject';\nimport toSource from './_toSource';\n\n/**\n * Used to match `RegExp`\n * [syntax characters](http://ecma-international.org/ecma-262/6.0/#sec-patterns).\n */\nvar reRegExpChar = /[\\\\^$.*+?()[\\]{}|]/g;\n\n/** Used to detect host constructors (Safari). */\nvar reIsHostCtor = /^\\[object .+?Constructor\\]$/;\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to resolve the decompiled source of functions. */\nvar funcToString = Function.prototype.toString;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/** Used to detect if a method is native. */\nvar reIsNative = RegExp('^' +\n  funcToString.call(hasOwnProperty).replace(reRegExpChar, '\\\\$&')\n  .replace(/hasOwnProperty|(function).*?(?=\\\\\\()| for .+?(?=\\\\\\])/g, '$1.*?') + '$'\n);\n\n/**\n * Checks if `value` is a native function.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a native function,\n *  else `false`.\n * @example\n *\n * _.isNative(Array.prototype.push);\n * // => true\n *\n * _.isNative(_);\n * // => false\n */\nfunction isNative(value) {\n  if (!isObject(value)) {\n    return false;\n  }\n  var pattern = (isFunction(value) || isHostObject(value)) ? reIsNative : reIsHostCtor;\n  return pattern.test(toSource(value));\n}\n\nexport default isNative;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/isNative.js\n// module id = 231\n// module chunks = 0","/** Used for built-in method references. */\nvar arrayProto = Array.prototype;\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeJoin = arrayProto.join;\n\n/**\n * Converts all elements in `array` into a string separated by `separator`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to convert.\n * @param {string} [separator=','] The element separator.\n * @returns {string} Returns the joined string.\n * @example\n *\n * _.join(['a', 'b', 'c'], '~');\n * // => 'a~b~c'\n */\nfunction join(array, separator) {\n  return array ? nativeJoin.call(array, separator) : '';\n}\n\nexport default join;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/join.js\n// module id = 232\n// module chunks = 0","import indexOfNaN from './_indexOfNaN';\nimport toInteger from './toInteger';\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeMax = Math.max,\n    nativeMin = Math.min;\n\n/**\n * This method is like `_.indexOf` except that it iterates over elements of\n * `array` from right to left.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to search.\n * @param {*} value The value to search for.\n * @param {number} [fromIndex=array.length-1] The index to search from.\n * @returns {number} Returns the index of the matched value, else `-1`.\n * @example\n *\n * _.lastIndexOf([1, 2, 1, 2], 2);\n * // => 3\n *\n * // Search from the `fromIndex`.\n * _.lastIndexOf([1, 2, 1, 2], 2, 2);\n * // => 1\n */\nfunction lastIndexOf(array, value, fromIndex) {\n  var length = array ? array.length : 0;\n  if (!length) {\n    return -1;\n  }\n  var index = length;\n  if (fromIndex !== undefined) {\n    index = toInteger(fromIndex);\n    index = (\n      index < 0\n        ? nativeMax(length + index, 0)\n        : nativeMin(index, length - 1)\n    ) + 1;\n  }\n  if (value !== value) {\n    return indexOfNaN(array, index, true);\n  }\n  while (index--) {\n    if (array[index] === value) {\n      return index;\n    }\n  }\n  return -1;\n}\n\nexport default lastIndexOf;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/lastIndexOf.js\n// module id = 233\n// module chunks = 0","import baseNth from './_baseNth';\nimport toInteger from './toInteger';\n\n/**\n * Gets the element at `n` index of `array`. If `n` is negative, the nth\n * element from the end is returned.\n *\n * @static\n * @memberOf _\n * @since 4.11.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {number} [n=0] The index of the element to return.\n * @returns {*} Returns the nth element of `array`.\n * @example\n *\n * var array = ['a', 'b', 'c', 'd'];\n *\n * _.nth(array, 1);\n * // => 'b'\n *\n * _.nth(array, -2);\n * // => 'c';\n */\nfunction nth(array, n) {\n  return (array && array.length) ? baseNth(array, toInteger(n)) : undefined;\n}\n\nexport default nth;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/nth.js\n// module id = 234\n// module chunks = 0","import pullAll from './pullAll';\nimport rest from './rest';\n\n/**\n * Removes all given values from `array` using\n * [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)\n * for equality comparisons.\n *\n * **Note:** Unlike `_.without`, this method mutates `array`. Use `_.remove`\n * to remove elements from an array by predicate.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {...*} [values] The values to remove.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = [1, 2, 3, 1, 2, 3];\n *\n * _.pull(array, 2, 3);\n * console.log(array);\n * // => [1, 1]\n */\nvar pull = rest(pullAll);\n\nexport default pull;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/pull.js\n// module id = 235\n// module chunks = 0","import baseIteratee from './_baseIteratee';\nimport basePullAll from './_basePullAll';\n\n/**\n * This method is like `_.pullAll` except that it accepts `iteratee` which is\n * invoked for each element of `array` and `values` to generate the criterion\n * by which they're compared. The iteratee is invoked with one argument: (value).\n *\n * **Note:** Unlike `_.differenceBy`, this method mutates `array`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {Array} values The values to remove.\n * @param {Array|Function|Object|string} [iteratee=_.identity]\n *  The iteratee invoked per element.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = [{ 'x': 1 }, { 'x': 2 }, { 'x': 3 }, { 'x': 1 }];\n *\n * _.pullAllBy(array, [{ 'x': 1 }, { 'x': 3 }], 'x');\n * console.log(array);\n * // => [{ 'x': 2 }]\n */\nfunction pullAllBy(array, values, iteratee) {\n  return (array && array.length && values && values.length)\n    ? basePullAll(array, values, baseIteratee(iteratee))\n    : array;\n}\n\nexport default pullAllBy;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/pullAllBy.js\n// module id = 236\n// module chunks = 0","import basePullAll from './_basePullAll';\n\n/**\n * This method is like `_.pullAll` except that it accepts `comparator` which\n * is invoked to compare elements of `array` to `values`. The comparator is\n * invoked with two arguments: (arrVal, othVal).\n *\n * **Note:** Unlike `_.differenceWith`, this method mutates `array`.\n *\n * @static\n * @memberOf _\n * @since 4.6.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {Array} values The values to remove.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = [{ 'x': 1, 'y': 2 }, { 'x': 3, 'y': 4 }, { 'x': 5, 'y': 6 }];\n *\n * _.pullAllWith(array, [{ 'x': 3, 'y': 4 }], _.isEqual);\n * console.log(array);\n * // => [{ 'x': 1, 'y': 2 }, { 'x': 5, 'y': 6 }]\n */\nfunction pullAllWith(array, values, comparator) {\n  return (array && array.length && values && values.length)\n    ? basePullAll(array, values, undefined, comparator)\n    : array;\n}\n\nexport default pullAllWith;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/pullAllWith.js\n// module id = 237\n// module chunks = 0","import arrayMap from './_arrayMap';\nimport baseAt from './_baseAt';\nimport baseFlatten from './_baseFlatten';\nimport basePullAt from './_basePullAt';\nimport compareAscending from './_compareAscending';\nimport isIndex from './_isIndex';\nimport rest from './rest';\n\n/**\n * Removes elements from `array` corresponding to `indexes` and returns an\n * array of removed elements.\n *\n * **Note:** Unlike `_.at`, this method mutates `array`.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {...(number|number[])} [indexes] The indexes of elements to remove.\n * @returns {Array} Returns the new array of removed elements.\n * @example\n *\n * var array = [5, 10, 15, 20];\n * var evens = _.pullAt(array, 1, 3);\n *\n * console.log(array);\n * // => [5, 15]\n *\n * console.log(evens);\n * // => [10, 20]\n */\nvar pullAt = rest(function(array, indexes) {\n  indexes = baseFlatten(indexes, 1);\n\n  var length = array ? array.length : 0,\n      result = baseAt(array, indexes);\n\n  basePullAt(array, arrayMap(indexes, function(index) {\n    return isIndex(index, length) ? +index : index;\n  }).sort(compareAscending));\n\n  return result;\n});\n\nexport default pullAt;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/pullAt.js\n// module id = 238\n// module chunks = 0","import baseIteratee from './_baseIteratee';\nimport basePullAt from './_basePullAt';\n\n/**\n * Removes all elements from `array` that `predicate` returns truthy for\n * and returns an array of the removed elements. The predicate is invoked\n * with three arguments: (value, index, array).\n *\n * **Note:** Unlike `_.filter`, this method mutates `array`. Use `_.pull`\n * to pull elements from an array by value.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {Array|Function|Object|string} [predicate=_.identity]\n *  The function invoked per iteration.\n * @returns {Array} Returns the new array of removed elements.\n * @example\n *\n * var array = [1, 2, 3, 4];\n * var evens = _.remove(array, function(n) {\n *   return n % 2 == 0;\n * });\n *\n * console.log(array);\n * // => [1, 3]\n *\n * console.log(evens);\n * // => [2, 4]\n */\nfunction remove(array, predicate) {\n  var result = [];\n  if (!(array && array.length)) {\n    return result;\n  }\n  var index = -1,\n      indexes = [],\n      length = array.length;\n\n  predicate = baseIteratee(predicate, 3);\n  while (++index < length) {\n    var value = array[index];\n    if (predicate(value, index, array)) {\n      result.push(value);\n      indexes.push(index);\n    }\n  }\n  basePullAt(array, indexes);\n  return result;\n}\n\nexport default remove;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/remove.js\n// module id = 239\n// module chunks = 0","/** Used for built-in method references. */\nvar arrayProto = Array.prototype;\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeReverse = arrayProto.reverse;\n\n/**\n * Reverses `array` so that the first element becomes the last, the second\n * element becomes the second to last, and so on.\n *\n * **Note:** This method mutates `array` and is based on\n * [`Array#reverse`](https://mdn.io/Array/reverse).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = [1, 2, 3];\n *\n * _.reverse(array);\n * // => [3, 2, 1]\n *\n * console.log(array);\n * // => [3, 2, 1]\n */\nfunction reverse(array) {\n  return array ? nativeReverse.call(array) : array;\n}\n\nexport default reverse;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/reverse.js\n// module id = 240\n// module chunks = 0","import baseSlice from './_baseSlice';\nimport isIterateeCall from './_isIterateeCall';\nimport toInteger from './toInteger';\n\n/**\n * Creates a slice of `array` from `start` up to, but not including, `end`.\n *\n * **Note:** This method is used instead of\n * [`Array#slice`](https://mdn.io/Array/slice) to ensure dense arrays are\n * returned.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to slice.\n * @param {number} [start=0] The start position.\n * @param {number} [end=array.length] The end position.\n * @returns {Array} Returns the slice of `array`.\n */\nfunction slice(array, start, end) {\n  var length = array ? array.length : 0;\n  if (!length) {\n    return [];\n  }\n  if (end && typeof end != 'number' && isIterateeCall(array, start, end)) {\n    start = 0;\n    end = length;\n  }\n  else {\n    start = start == null ? 0 : toInteger(start);\n    end = end === undefined ? length : toInteger(end);\n  }\n  return baseSlice(array, start, end);\n}\n\nexport default slice;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/slice.js\n// module id = 241\n// module chunks = 0","import baseSortedIndex from './_baseSortedIndex';\n\n/**\n * Uses a binary search to determine the lowest index at which `value`\n * should be inserted into `array` in order to maintain its sort order.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @returns {number} Returns the index at which `value` should be inserted\n *  into `array`.\n * @example\n *\n * _.sortedIndex([30, 50], 40);\n * // => 1\n *\n * _.sortedIndex([4, 5], 4);\n * // => 0\n */\nfunction sortedIndex(array, value) {\n  return baseSortedIndex(array, value);\n}\n\nexport default sortedIndex;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/sortedIndex.js\n// module id = 242\n// module chunks = 0","import baseIteratee from './_baseIteratee';\nimport baseSortedIndexBy from './_baseSortedIndexBy';\n\n/**\n * This method is like `_.sortedIndex` except that it accepts `iteratee`\n * which is invoked for `value` and each element of `array` to compute their\n * sort ranking. The iteratee is invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @param {Array|Function|Object|string} [iteratee=_.identity]\n *  The iteratee invoked per element.\n * @returns {number} Returns the index at which `value` should be inserted\n *  into `array`.\n * @example\n *\n * var dict = { 'thirty': 30, 'forty': 40, 'fifty': 50 };\n *\n * _.sortedIndexBy(['thirty', 'fifty'], 'forty', _.propertyOf(dict));\n * // => 1\n *\n * // The `_.property` iteratee shorthand.\n * _.sortedIndexBy([{ 'x': 4 }, { 'x': 5 }], { 'x': 4 }, 'x');\n * // => 0\n */\nfunction sortedIndexBy(array, value, iteratee) {\n  return baseSortedIndexBy(array, value, baseIteratee(iteratee));\n}\n\nexport default sortedIndexBy;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/sortedIndexBy.js\n// module id = 243\n// module chunks = 0","import baseSortedIndex from './_baseSortedIndex';\nimport eq from './eq';\n\n/**\n * This method is like `_.indexOf` except that it performs a binary\n * search on a sorted `array`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to search.\n * @param {*} value The value to search for.\n * @returns {number} Returns the index of the matched value, else `-1`.\n * @example\n *\n * _.sortedIndexOf([1, 1, 2, 2], 2);\n * // => 2\n */\nfunction sortedIndexOf(array, value) {\n  var length = array ? array.length : 0;\n  if (length) {\n    var index = baseSortedIndex(array, value);\n    if (index < length && eq(array[index], value)) {\n      return index;\n    }\n  }\n  return -1;\n}\n\nexport default sortedIndexOf;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/sortedIndexOf.js\n// module id = 244\n// module chunks = 0","import baseSortedIndex from './_baseSortedIndex';\n\n/**\n * This method is like `_.sortedIndex` except that it returns the highest\n * index at which `value` should be inserted into `array` in order to\n * maintain its sort order.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @returns {number} Returns the index at which `value` should be inserted\n *  into `array`.\n * @example\n *\n * _.sortedLastIndex([4, 5], 4);\n * // => 1\n */\nfunction sortedLastIndex(array, value) {\n  return baseSortedIndex(array, value, true);\n}\n\nexport default sortedLastIndex;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/sortedLastIndex.js\n// module id = 245\n// module chunks = 0","import baseIteratee from './_baseIteratee';\nimport baseSortedIndexBy from './_baseSortedIndexBy';\n\n/**\n * This method is like `_.sortedLastIndex` except that it accepts `iteratee`\n * which is invoked for `value` and each element of `array` to compute their\n * sort ranking. The iteratee is invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @param {Array|Function|Object|string} [iteratee=_.identity]\n *  The iteratee invoked per element.\n * @returns {number} Returns the index at which `value` should be inserted\n *  into `array`.\n * @example\n *\n * // The `_.property` iteratee shorthand.\n * _.sortedLastIndexBy([{ 'x': 4 }, { 'x': 5 }], { 'x': 4 }, 'x');\n * // => 1\n */\nfunction sortedLastIndexBy(array, value, iteratee) {\n  return baseSortedIndexBy(array, value, baseIteratee(iteratee), true);\n}\n\nexport default sortedLastIndexBy;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/sortedLastIndexBy.js\n// module id = 246\n// module chunks = 0","import baseSortedIndex from './_baseSortedIndex';\nimport eq from './eq';\n\n/**\n * This method is like `_.lastIndexOf` except that it performs a binary\n * search on a sorted `array`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to search.\n * @param {*} value The value to search for.\n * @returns {number} Returns the index of the matched value, else `-1`.\n * @example\n *\n * _.sortedLastIndexOf([1, 1, 2, 2], 2);\n * // => 3\n */\nfunction sortedLastIndexOf(array, value) {\n  var length = array ? array.length : 0;\n  if (length) {\n    var index = baseSortedIndex(array, value, true) - 1;\n    if (eq(array[index], value)) {\n      return index;\n    }\n  }\n  return -1;\n}\n\nexport default sortedLastIndexOf;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/sortedLastIndexOf.js\n// module id = 247\n// module chunks = 0","import baseSortedUniq from './_baseSortedUniq';\n\n/**\n * This method is like `_.uniq` except that it's designed and optimized\n * for sorted arrays.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @returns {Array} Returns the new duplicate free array.\n * @example\n *\n * _.sortedUniq([1, 1, 2]);\n * // => [1, 2]\n */\nfunction sortedUniq(array) {\n  return (array && array.length)\n    ? baseSortedUniq(array)\n    : [];\n}\n\nexport default sortedUniq;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/sortedUniq.js\n// module id = 248\n// module chunks = 0","import baseIteratee from './_baseIteratee';\nimport baseSortedUniq from './_baseSortedUniq';\n\n/**\n * This method is like `_.uniqBy` except that it's designed and optimized\n * for sorted arrays.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @returns {Array} Returns the new duplicate free array.\n * @example\n *\n * _.sortedUniqBy([1.1, 1.2, 2.3, 2.4], Math.floor);\n * // => [1.1, 2.3]\n */\nfunction sortedUniqBy(array, iteratee) {\n  return (array && array.length)\n    ? baseSortedUniq(array, baseIteratee(iteratee))\n    : [];\n}\n\nexport default sortedUniqBy;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/sortedUniqBy.js\n// module id = 249\n// module chunks = 0","import drop from './drop';\n\n/**\n * Gets all but the first element of `array`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.tail([1, 2, 3]);\n * // => [2, 3]\n */\nfunction tail(array) {\n  return drop(array, 1);\n}\n\nexport default tail;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/tail.js\n// module id = 250\n// module chunks = 0","import baseSlice from './_baseSlice';\nimport toInteger from './toInteger';\n\n/**\n * Creates a slice of `array` with `n` elements taken from the beginning.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {number} [n=1] The number of elements to take.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.take([1, 2, 3]);\n * // => [1]\n *\n * _.take([1, 2, 3], 2);\n * // => [1, 2]\n *\n * _.take([1, 2, 3], 5);\n * // => [1, 2, 3]\n *\n * _.take([1, 2, 3], 0);\n * // => []\n */\nfunction take(array, n, guard) {\n  if (!(array && array.length)) {\n    return [];\n  }\n  n = (guard || n === undefined) ? 1 : toInteger(n);\n  return baseSlice(array, 0, n < 0 ? 0 : n);\n}\n\nexport default take;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/take.js\n// module id = 251\n// module chunks = 0","import baseSlice from './_baseSlice';\nimport toInteger from './toInteger';\n\n/**\n * Creates a slice of `array` with `n` elements taken from the end.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {number} [n=1] The number of elements to take.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.takeRight([1, 2, 3]);\n * // => [3]\n *\n * _.takeRight([1, 2, 3], 2);\n * // => [2, 3]\n *\n * _.takeRight([1, 2, 3], 5);\n * // => [1, 2, 3]\n *\n * _.takeRight([1, 2, 3], 0);\n * // => []\n */\nfunction takeRight(array, n, guard) {\n  var length = array ? array.length : 0;\n  if (!length) {\n    return [];\n  }\n  n = (guard || n === undefined) ? 1 : toInteger(n);\n  n = length - n;\n  return baseSlice(array, n < 0 ? 0 : n, length);\n}\n\nexport default takeRight;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/takeRight.js\n// module id = 252\n// module chunks = 0","import baseIteratee from './_baseIteratee';\nimport baseWhile from './_baseWhile';\n\n/**\n * Creates a slice of `array` with elements taken from the end. Elements are\n * taken until `predicate` returns falsey. The predicate is invoked with\n * three arguments: (value, index, array).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {Array|Function|Object|string} [predicate=_.identity]\n *  The function invoked per iteration.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * var users = [\n *   { 'user': 'barney',  'active': true },\n *   { 'user': 'fred',    'active': false },\n *   { 'user': 'pebbles', 'active': false }\n * ];\n *\n * _.takeRightWhile(users, function(o) { return !o.active; });\n * // => objects for ['fred', 'pebbles']\n *\n * // The `_.matches` iteratee shorthand.\n * _.takeRightWhile(users, { 'user': 'pebbles', 'active': false });\n * // => objects for ['pebbles']\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.takeRightWhile(users, ['active', false]);\n * // => objects for ['fred', 'pebbles']\n *\n * // The `_.property` iteratee shorthand.\n * _.takeRightWhile(users, 'active');\n * // => []\n */\nfunction takeRightWhile(array, predicate) {\n  return (array && array.length)\n    ? baseWhile(array, baseIteratee(predicate, 3), false, true)\n    : [];\n}\n\nexport default takeRightWhile;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/takeRightWhile.js\n// module id = 253\n// module chunks = 0","import baseIteratee from './_baseIteratee';\nimport baseWhile from './_baseWhile';\n\n/**\n * Creates a slice of `array` with elements taken from the beginning. Elements\n * are taken until `predicate` returns falsey. The predicate is invoked with\n * three arguments: (value, index, array).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {Array|Function|Object|string} [predicate=_.identity]\n *  The function invoked per iteration.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * var users = [\n *   { 'user': 'barney',  'active': false },\n *   { 'user': 'fred',    'active': false},\n *   { 'user': 'pebbles', 'active': true }\n * ];\n *\n * _.takeWhile(users, function(o) { return !o.active; });\n * // => objects for ['barney', 'fred']\n *\n * // The `_.matches` iteratee shorthand.\n * _.takeWhile(users, { 'user': 'barney', 'active': false });\n * // => objects for ['barney']\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.takeWhile(users, ['active', false]);\n * // => objects for ['barney', 'fred']\n *\n * // The `_.property` iteratee shorthand.\n * _.takeWhile(users, 'active');\n * // => []\n */\nfunction takeWhile(array, predicate) {\n  return (array && array.length)\n    ? baseWhile(array, baseIteratee(predicate, 3))\n    : [];\n}\n\nexport default takeWhile;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/takeWhile.js\n// module id = 254\n// module chunks = 0","import isFunction from './isFunction';\nimport isObject from './isObject';\nimport isSymbol from './isSymbol';\n\n/** Used as references for various `Number` constants. */\nvar NAN = 0 / 0;\n\n/** Used to match leading and trailing whitespace. */\nvar reTrim = /^\\s+|\\s+$/g;\n\n/** Used to detect bad signed hexadecimal string values. */\nvar reIsBadHex = /^[-+]0x[0-9a-f]+$/i;\n\n/** Used to detect binary string values. */\nvar reIsBinary = /^0b[01]+$/i;\n\n/** Used to detect octal string values. */\nvar reIsOctal = /^0o[0-7]+$/i;\n\n/** Built-in method references without a dependency on `root`. */\nvar freeParseInt = parseInt;\n\n/**\n * Converts `value` to a number.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to process.\n * @returns {number} Returns the number.\n * @example\n *\n * _.toNumber(3.2);\n * // => 3.2\n *\n * _.toNumber(Number.MIN_VALUE);\n * // => 5e-324\n *\n * _.toNumber(Infinity);\n * // => Infinity\n *\n * _.toNumber('3.2');\n * // => 3.2\n */\nfunction toNumber(value) {\n  if (typeof value == 'number') {\n    return value;\n  }\n  if (isSymbol(value)) {\n    return NAN;\n  }\n  if (isObject(value)) {\n    var other = isFunction(value.valueOf) ? value.valueOf() : value;\n    value = isObject(other) ? (other + '') : other;\n  }\n  if (typeof value != 'string') {\n    return value === 0 ? value : +value;\n  }\n  value = value.replace(reTrim, '');\n  var isBinary = reIsBinary.test(value);\n  return (isBinary || reIsOctal.test(value))\n    ? freeParseInt(value.slice(2), isBinary ? 2 : 8)\n    : (reIsBadHex.test(value) ? NAN : +value);\n}\n\nexport default toNumber;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/toNumber.js\n// module id = 255\n// module chunks = 0","import baseFlatten from './_baseFlatten';\nimport baseUniq from './_baseUniq';\nimport isArrayLikeObject from './isArrayLikeObject';\nimport rest from './rest';\n\n/**\n * Creates an array of unique values, in order, from all given arrays using\n * [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)\n * for equality comparisons.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @returns {Array} Returns the new array of combined values.\n * @example\n *\n * _.union([2, 1], [4, 2], [1, 2]);\n * // => [2, 1, 4]\n */\nvar union = rest(function(arrays) {\n  return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true));\n});\n\nexport default union;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/union.js\n// module id = 256\n// module chunks = 0","import baseFlatten from './_baseFlatten';\nimport baseIteratee from './_baseIteratee';\nimport baseUniq from './_baseUniq';\nimport isArrayLikeObject from './isArrayLikeObject';\nimport last from './last';\nimport rest from './rest';\n\n/**\n * This method is like `_.union` except that it accepts `iteratee` which is\n * invoked for each element of each `arrays` to generate the criterion by\n * which uniqueness is computed. The iteratee is invoked with one argument:\n * (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Array|Function|Object|string} [iteratee=_.identity]\n *  The iteratee invoked per element.\n * @returns {Array} Returns the new array of combined values.\n * @example\n *\n * _.unionBy([2.1, 1.2], [4.3, 2.4], Math.floor);\n * // => [2.1, 1.2, 4.3]\n *\n * // The `_.property` iteratee shorthand.\n * _.unionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');\n * // => [{ 'x': 1 }, { 'x': 2 }]\n */\nvar unionBy = rest(function(arrays) {\n  var iteratee = last(arrays);\n  if (isArrayLikeObject(iteratee)) {\n    iteratee = undefined;\n  }\n  return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), baseIteratee(iteratee));\n});\n\nexport default unionBy;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/unionBy.js\n// module id = 257\n// module chunks = 0","import baseFlatten from './_baseFlatten';\nimport baseUniq from './_baseUniq';\nimport isArrayLikeObject from './isArrayLikeObject';\nimport last from './last';\nimport rest from './rest';\n\n/**\n * This method is like `_.union` except that it accepts `comparator` which\n * is invoked to compare elements of `arrays`. The comparator is invoked\n * with two arguments: (arrVal, othVal).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of combined values.\n * @example\n *\n * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];\n *\n * _.unionWith(objects, others, _.isEqual);\n * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]\n */\nvar unionWith = rest(function(arrays) {\n  var comparator = last(arrays);\n  if (isArrayLikeObject(comparator)) {\n    comparator = undefined;\n  }\n  return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), undefined, comparator);\n});\n\nexport default unionWith;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/unionWith.js\n// module id = 258\n// module chunks = 0","import baseUniq from './_baseUniq';\n\n/**\n * Creates a duplicate-free version of an array, using\n * [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)\n * for equality comparisons, in which only the first occurrence of each\n * element is kept.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @returns {Array} Returns the new duplicate free array.\n * @example\n *\n * _.uniq([2, 1, 2]);\n * // => [2, 1]\n */\nfunction uniq(array) {\n  return (array && array.length)\n    ? baseUniq(array)\n    : [];\n}\n\nexport default uniq;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/uniq.js\n// module id = 259\n// module chunks = 0","import baseIteratee from './_baseIteratee';\nimport baseUniq from './_baseUniq';\n\n/**\n * This method is like `_.uniq` except that it accepts `iteratee` which is\n * invoked for each element in `array` to generate the criterion by which\n * uniqueness is computed. The iteratee is invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {Array|Function|Object|string} [iteratee=_.identity]\n *  The iteratee invoked per element.\n * @returns {Array} Returns the new duplicate free array.\n * @example\n *\n * _.uniqBy([2.1, 1.2, 2.3], Math.floor);\n * // => [2.1, 1.2]\n *\n * // The `_.property` iteratee shorthand.\n * _.uniqBy([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x');\n * // => [{ 'x': 1 }, { 'x': 2 }]\n */\nfunction uniqBy(array, iteratee) {\n  return (array && array.length)\n    ? baseUniq(array, baseIteratee(iteratee))\n    : [];\n}\n\nexport default uniqBy;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/uniqBy.js\n// module id = 260\n// module chunks = 0","import baseUniq from './_baseUniq';\n\n/**\n * This method is like `_.uniq` except that it accepts `comparator` which\n * is invoked to compare elements of `array`. The comparator is invoked with\n * two arguments: (arrVal, othVal).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new duplicate free array.\n * @example\n *\n * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 },  { 'x': 1, 'y': 2 }];\n *\n * _.uniqWith(objects, _.isEqual);\n * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]\n */\nfunction uniqWith(array, comparator) {\n  return (array && array.length)\n    ? baseUniq(array, undefined, comparator)\n    : [];\n}\n\nexport default uniqWith;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/uniqWith.js\n// module id = 261\n// module chunks = 0","import baseDifference from './_baseDifference';\nimport isArrayLikeObject from './isArrayLikeObject';\nimport rest from './rest';\n\n/**\n * Creates an array excluding all given values using\n * [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)\n * for equality comparisons.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {...*} [values] The values to exclude.\n * @returns {Array} Returns the new array of filtered values.\n * @see _.difference, _.xor\n * @example\n *\n * _.without([1, 2, 1, 3], 1, 2);\n * // => [3]\n */\nvar without = rest(function(array, values) {\n  return isArrayLikeObject(array)\n    ? baseDifference(array, values)\n    : [];\n});\n\nexport default without;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/without.js\n// module id = 262\n// module chunks = 0","import arrayFilter from './_arrayFilter';\nimport baseXor from './_baseXor';\nimport isArrayLikeObject from './isArrayLikeObject';\nimport rest from './rest';\n\n/**\n * Creates an array of unique values that is the\n * [symmetric difference](https://en.wikipedia.org/wiki/Symmetric_difference)\n * of the given arrays. The order of result values is determined by the order\n * they occur in the arrays.\n *\n * @static\n * @memberOf _\n * @since 2.4.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @returns {Array} Returns the new array of filtered values.\n * @see _.difference, _.without\n * @example\n *\n * _.xor([2, 1], [4, 2]);\n * // => [1, 4]\n */\nvar xor = rest(function(arrays) {\n  return baseXor(arrayFilter(arrays, isArrayLikeObject));\n});\n\nexport default xor;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/xor.js\n// module id = 263\n// module chunks = 0","import arrayFilter from './_arrayFilter';\nimport baseIteratee from './_baseIteratee';\nimport baseXor from './_baseXor';\nimport isArrayLikeObject from './isArrayLikeObject';\nimport last from './last';\nimport rest from './rest';\n\n/**\n * This method is like `_.xor` except that it accepts `iteratee` which is\n * invoked for each element of each `arrays` to generate the criterion by\n * which by which they're compared. The iteratee is invoked with one argument:\n * (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Array|Function|Object|string} [iteratee=_.identity]\n *  The iteratee invoked per element.\n * @returns {Array} Returns the new array of filtered values.\n * @example\n *\n * _.xorBy([2.1, 1.2], [4.3, 2.4], Math.floor);\n * // => [1.2, 4.3]\n *\n * // The `_.property` iteratee shorthand.\n * _.xorBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');\n * // => [{ 'x': 2 }]\n */\nvar xorBy = rest(function(arrays) {\n  var iteratee = last(arrays);\n  if (isArrayLikeObject(iteratee)) {\n    iteratee = undefined;\n  }\n  return baseXor(arrayFilter(arrays, isArrayLikeObject), baseIteratee(iteratee));\n});\n\nexport default xorBy;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/xorBy.js\n// module id = 264\n// module chunks = 0","import arrayFilter from './_arrayFilter';\nimport baseXor from './_baseXor';\nimport isArrayLikeObject from './isArrayLikeObject';\nimport last from './last';\nimport rest from './rest';\n\n/**\n * This method is like `_.xor` except that it accepts `comparator` which is\n * invoked to compare elements of `arrays`. The comparator is invoked with\n * two arguments: (arrVal, othVal).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of filtered values.\n * @example\n *\n * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];\n *\n * _.xorWith(objects, others, _.isEqual);\n * // => [{ 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]\n */\nvar xorWith = rest(function(arrays) {\n  var comparator = last(arrays);\n  if (isArrayLikeObject(comparator)) {\n    comparator = undefined;\n  }\n  return baseXor(arrayFilter(arrays, isArrayLikeObject), undefined, comparator);\n});\n\nexport default xorWith;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/xorWith.js\n// module id = 265\n// module chunks = 0","import rest from './rest';\nimport unzip from './unzip';\n\n/**\n * Creates an array of grouped elements, the first of which contains the\n * first elements of the given arrays, the second of which contains the\n * second elements of the given arrays, and so on.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {...Array} [arrays] The arrays to process.\n * @returns {Array} Returns the new array of grouped elements.\n * @example\n *\n * _.zip(['fred', 'barney'], [30, 40], [true, false]);\n * // => [['fred', 30, true], ['barney', 40, false]]\n */\nvar zip = rest(unzip);\n\nexport default zip;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/zip.js\n// module id = 266\n// module chunks = 0","import assignValue from './_assignValue';\nimport baseZipObject from './_baseZipObject';\n\n/**\n * This method is like `_.fromPairs` except that it accepts two arrays,\n * one of property identifiers and one of corresponding values.\n *\n * @static\n * @memberOf _\n * @since 0.4.0\n * @category Array\n * @param {Array} [props=[]] The property identifiers.\n * @param {Array} [values=[]] The property values.\n * @returns {Object} Returns the new object.\n * @example\n *\n * _.zipObject(['a', 'b'], [1, 2]);\n * // => { 'a': 1, 'b': 2 }\n */\nfunction zipObject(props, values) {\n  return baseZipObject(props || [], values || [], assignValue);\n}\n\nexport default zipObject;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/zipObject.js\n// module id = 267\n// module chunks = 0","import baseSet from './_baseSet';\nimport baseZipObject from './_baseZipObject';\n\n/**\n * This method is like `_.zipObject` except that it supports property paths.\n *\n * @static\n * @memberOf _\n * @since 4.1.0\n * @category Array\n * @param {Array} [props=[]] The property identifiers.\n * @param {Array} [values=[]] The property values.\n * @returns {Object} Returns the new object.\n * @example\n *\n * _.zipObjectDeep(['a.b[0].c', 'a.b[1].d'], [1, 2]);\n * // => { 'a': { 'b': [{ 'c': 1 }, { 'd': 2 }] } }\n */\nfunction zipObjectDeep(props, values) {\n  return baseZipObject(props || [], values || [], baseSet);\n}\n\nexport default zipObjectDeep;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/zipObjectDeep.js\n// module id = 268\n// module chunks = 0","import rest from './rest';\nimport unzipWith from './unzipWith';\n\n/**\n * This method is like `_.zip` except that it accepts `iteratee` to specify\n * how grouped values should be combined. The iteratee is invoked with the\n * elements of each group: (...group).\n *\n * @static\n * @memberOf _\n * @since 3.8.0\n * @category Array\n * @param {...Array} [arrays] The arrays to process.\n * @param {Function} [iteratee=_.identity] The function to combine grouped values.\n * @returns {Array} Returns the new array of grouped elements.\n * @example\n *\n * _.zipWith([1, 2], [10, 20], [100, 200], function(a, b, c) {\n *   return a + b + c;\n * });\n * // => [111, 222]\n */\nvar zipWith = rest(function(arrays) {\n  var length = arrays.length,\n      iteratee = length > 1 ? arrays[length - 1] : undefined;\n\n  iteratee = typeof iteratee == 'function' ? (arrays.pop(), iteratee) : undefined;\n  return unzipWith(arrays, iteratee);\n});\n\nexport default zipWith;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/zipWith.js\n// module id = 269\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/objecttomap\n */\n\n/**\n * Transforms object to map.\n *\n *\t\tconst map = objectToMap( { 'foo': 1, 'bar': 2 } );\n *\t\tmap.get( 'foo' ); // 1\n *\n * @param {Object} obj Object to transform.\n * @returns {Map} Map created from object.\n */\nexport default function objectToMap( obj ) {\n\tconst map = new Map();\n\n\tfor ( let key in obj ) {\n\t\tmap.set( key, obj[ key ] );\n\t}\n\n\treturn map;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/objecttomap.js\n// module id = 270\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * Set of utils to handle unicode characters.\n *\n * @module utils/unicode\n */\n\n/**\n * Checks whether given `character` is a combining mark.\n *\n * @param {String} character Character to check.\n * @returns {Boolean}\n */\nexport function isCombiningMark( character ) {\n\treturn !!character && character.length == 1 && /[\\u0300-\\u036f\\u1ab0-\\u1aff\\u1dc0-\\u1dff\\u20d0-\\u20ff\\ufe20-\\ufe2f]/.test( character );\n}\n\n/**\n * Checks whether given `character` is a high half of surrogate pair.\n *\n * Using UTF-16 terminology, a surrogate pair denotes UTF-16 character using two UTF-8 characters. The surrogate pair\n * consist of high surrogate pair character followed by low surrogate pair character.\n *\n * @param {String} character Character to check.\n * @returns {Boolean}\n */\nexport function isHighSurrogateHalf( character ) {\n\treturn !!character && character.length == 1 && /[\\ud800-\\udbff]/.test( character );\n}\n\n/**\n * Checks whether given `character` is a low half of surrogate pair.\n *\n * Using UTF-16 terminology, a surrogate pair denotes UTF-16 character using two UTF-8 characters. The surrogate pair\n * consist of high surrogate pair character followed by low surrogate pair character.\n *\n * @param {String} character Character to check.\n * @returns {Boolean}\n */\nexport function isLowSurrogateHalf( character ) {\n\treturn !!character && character.length == 1 && /[\\udc00-\\udfff]/.test( character );\n}\n\n/**\n * Checks whether given offset in a string is inside a surrogate pair (between two surrogate halves).\n *\n * @param {String} string String to check.\n * @param {Number} offset Offset to check.\n * @returns {Boolean}\n */\nexport function isInsideSurrogatePair( string, offset ) {\n\treturn isHighSurrogateHalf( string.charAt( offset - 1 ) ) && isLowSurrogateHalf( string.charAt( offset ) );\n}\n\n/**\n * Checks whether given offset in a string is between base character and combining mark or between two combining marks.\n *\n * @param {String} string String to check.\n * @param {Number} offset Offset to check.\n * @returns {Boolean}\n */\nexport function isInsideCombinedSymbol( string, offset ) {\n\treturn isCombiningMark( string.charAt( offset ) );\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/unicode.js\n// module id = 271\n// module chunks = 0","module.exports = function(originalModule) {\r\n\tif(!originalModule.webpackPolyfill) {\r\n\t\tvar module = Object.create(originalModule);\r\n\t\t// module.parent = undefined by default\r\n\t\tif(!module.children) module.children = [];\r\n\t\tObject.defineProperty(module, \"loaded\", {\r\n\t\t\tenumerable: true,\r\n\t\t\tget: function() {\r\n\t\t\t\treturn module.l;\r\n\t\t\t}\r\n\t\t});\r\n\t\tObject.defineProperty(module, \"id\", {\r\n\t\t\tenumerable: true,\r\n\t\t\tget: function() {\r\n\t\t\t\treturn module.i;\r\n\t\t\t}\r\n\t\t});\r\n\t\tObject.defineProperty(module, \"exports\", {\r\n\t\t\tenumerable: true,\r\n\t\t});\r\n\t\tmodule.webpackPolyfill = 1;\r\n\t}\r\n\treturn module;\r\n};\r\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// (webpack)/buildin/harmony-module.js\n// module id = 272\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n */\n\nimport ClassicEditor from '@ckeditor/ckeditor5-editor-classic/src/classic';\nimport Autoformat from '@ckeditor/ckeditor5-autoformat/src/autoformat';\nimport ArticlePreset from '@ckeditor/ckeditor5-presets/src/article';\n\ntry {\n\tClassicEditor.create( document.querySelector( '#editor' ), {\n\t\tplugins: [\n\t\t\tAutoformat,\n\t\t\tArticlePreset\n\t\t],\n\t\ttoolbar: [\n\t\t\t'headings',\n\t\t\t'bold',\n\t\t\t'italic',\n\t\t\t'link',\n\t\t\t'unlink',\n\t\t\t'bulletedList',\n\t\t\t'numberedList',\n\t\t\t'blockQuote',\n\t\t\t'undo',\n\t\t\t'redo'\n\t\t]\n\t} ).then( ( editor ) => {\n\t\twindow.editor = editor;\n\t} )\n\t.catch( ( err ) => {\n\t\tconsole.error( err.stack );\n\t} );\n} catch ( err ) {\n\tshowCompatibilityMessage();\n}\n\nfunction showCompatibilityMessage() {\n\tconst editorElement = document.querySelector( '#editor' );\n\tconst message = document.createElement( 'p' );\n\n\tmessage.innerHTML = `\n\t\t<h2>That's a shame...</h2>\n\t\t<p>We're not proud of this but this early developer preview does not work in your web browser.</p>\n\t\t<p>Please consider using <a href=\"https://www.google.com/chrome/\">Google Chrome</a> instead.</p>\n\t\t<p>We're terribly sorry.</p>\n\t`;\n\n\tmessage.classList.add( 'message' );\n\n\teditorElement.style.display = 'none';\n\teditorElement.parentNode.insertBefore( message, editorElement );\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./js/app.js\n// module id = 273\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module autoformat/autoformat\n */\n\nimport BlockAutoformatEngine from './blockautoformatengine';\nimport InlineAutoformatEngine from './inlineautoformatengine';\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport HeadingEngine from '@ckeditor/ckeditor5-heading/src/headingengine';\nimport ListEngine from '@ckeditor/ckeditor5-list/src/listengine';\nimport BoldEngine from '@ckeditor/ckeditor5-basic-styles/src/boldengine';\nimport ItalicEngine from '@ckeditor/ckeditor5-basic-styles/src/italicengine';\n\n/**\n * Includes a set of predefined autoformatting actions.\n *\n * ## Bulleted list\n *\n * You can create a bulleted list by staring a line with:\n *\n * * `* `\n * * `- `\n *\n * ## Numbered list\n *\n * You can create a numbered list by staring a line with:\n *\n * * `1. `\n * * `1) `\n *\n * ## Headings\n *\n * You can create a heading by starting a line with:\n *\n * `# ` – will create Heading 1,\n * `## ` – will create Heading 2,\n * `### ` – will create Heading 3.\n *\n * ## Bold and italic\n *\n * You can apply bold or italic to a text by typing Markdown formatting:\n *\n * * `**foo bar**` or `__foo bar__` – will bold the text,\n * * `*foo bar*` or `_foo bar_` – will italicize the text,\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class Autoformat extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get requires() {\n\t\treturn [ HeadingEngine, ListEngine, BoldEngine, ItalicEngine ];\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get pluginName() {\n\t\treturn 'autoformat/autoformat';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tthis._addListAutoformats();\n\t\tthis._addHeadingAutoformats();\n\t\tthis._addInlineAutoformats();\n\t}\n\n\t/**\n\t * Adds autoformatting related to ListEngine commands.\n\t *\n\t * When typed:\n\t * - `* ` or `- ` - paragraph will be changed to a bulleted list,\n\t * - `1. ` or `1) ` - paragraph will be changed to a numbered list (1 can be any digit or list of digits).\n\t *\n\t * @private\n\t */\n\t_addListAutoformats() {\n\t\tnew BlockAutoformatEngine( this.editor, /^[\\*\\-]\\s$/, 'bulletedList' );\n\t\tnew BlockAutoformatEngine( this.editor, /^\\d+[\\.|)]?\\s$/, 'numberedList' );\n\t}\n\n\t/**\n\t * Adds autoformatting related to HeadingEngine commands.\n\t * When typed `# ` or `## ` or `### ` paragraph will be changed to a corresponding heading level.\n\t *\n\t * @private\n\t */\n\t_addHeadingAutoformats() {\n\t\tnew BlockAutoformatEngine( this.editor, /^(#{1,3})\\s$/, ( context ) => {\n\t\t\tconst { batch, match } = context;\n\t\t\tconst headingLevel = match[ 1 ].length;\n\n\t\t\tthis.editor.execute( `heading${ headingLevel }`, { batch } );\n\t\t} );\n\t}\n\n\t/**\n\t * Adds inline autoformatting capabilities to the editor.\n\t *\n\t * When typed:\n\t * - `**foobar**`: `**` characters are removed, and `foobar` is set to bold,\n\t * - `__foobar__`: `__` characters are removed, and `foobar` is set to bold,\n\t * - `*foobar*`: `*` characters are removed, and `foobar` is set to italic,\n\t * - `_foobar_`: `_` characters are removed, and `foobar` is set to italic.\n\t *\n\t * @private\n\t */\n\t_addInlineAutoformats() {\n\t\tnew InlineAutoformatEngine( this.editor, /(\\*\\*)([^\\*]+)(\\*\\*)$/g, 'bold' );\n\t\tnew InlineAutoformatEngine( this.editor, /(__)([^_]+)(__)$/g, 'bold' );\n\n\t\t// The italic autoformatter cannot be triggered by the bold markers, so we need to check the\n\t\t// text before the pattern (e.g. `(?:^|[^\\*])`).\n\t\tnew InlineAutoformatEngine( this.editor, /(?:^|[^\\*])(\\*)([^\\*_]+)(\\*)$/g, 'italic' );\n\t\tnew InlineAutoformatEngine( this.editor, /(?:^|[^_])(_)([^_]+)(_)$/g, 'italic' );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-autoformat/src/autoformat.js\n// module id = 274\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module autoformat/blockautoformatengine\n */\n\nimport Range from '@ckeditor/ckeditor5-engine/src/model/range';\nimport TextProxy from '@ckeditor/ckeditor5-engine/src/model/textproxy';\n\n/**\n * The block autoformatting engine. Allows to format various block patterns. For example,\n * it can be configured to make a paragraph starting with \"* \" a list item.\n *\n * The autoformatting operation is integrated with the undo manager,\n * so the autoformatting step can be undone, if the user's intention wasn't to format the text.\n *\n * See the constructors documentation to learn how to create custom inline autoformatters. You can also use\n * the {@link module:autoformat/autoformat~Autoformat} feature which enables a set of default autoformatters\n * (lists, headings, bold and italic).\n */\nexport default class BlockAutoformatEngine {\n\t/**\n\t * Creates listener triggered on `change` event in document.\n\t * Calls callback when inserted text matches regular expression or command name\n\t * if provided instead of callback.\n\t *\n\t * Examples of usage:\n\t *\n\t * To convert paragraph to heading1 when `- ` is typed, using just commmand name:\n\t *\n\t *\t\tnew BlockAutoformatEngine( editor, /^\\- $/, 'heading1' );\n\t *\n\t * To convert paragraph to heading1 when `- ` is typed, using just callback:\n\t *\n\t *\t\tnew BlockAutoformatEngine( editor, /^\\- $/, ( context ) => {\n\t *\t\t\tconst { batch, match } = context;\n\t *\t\t\tconst headingLevel = match[ 1 ].length;\n\t *\n\t *\t\t\teditor.execute( 'heading', {\n\t *\t\t\t\tbatch,\n\t *\t\t\t\tformatId: `heading${ headingLevel }`\n\t *\t\t\t} );\n\t * \t\t} );\n\t *\n\t * @param {module:core/editor/editor~Editor} editor Editor instance.\n\t * @param {RegExp} pattern Regular expression to exec on just inserted text.\n\t * @param {Function|String} callbackOrCommand Callback to execute or command to run when text is matched.\n\t * In case of providing callback it receives following parameters:\n\t * * {module:engine/model/batch~Batch} batch Newly created batch for autoformat changes.\n\t * * {Object} match RegExp.exec() result of matching pattern to inserted text.\n\t */\n\tconstructor( editor, pattern, callbackOrCommand ) {\n\t\tlet callback;\n\n\t\tif ( typeof callbackOrCommand == 'function' ) {\n\t\t\tcallback = callbackOrCommand;\n\t\t} else {\n\t\t\t// We assume that the actual command name was provided.\n\t\t\tconst command = callbackOrCommand;\n\n\t\t\tcallback = ( context ) => {\n\t\t\t\tconst { batch } = context;\n\n\t\t\t\t// Create new batch for removal and command execution.\n\t\t\t\teditor.execute( command, { batch } );\n\t\t\t};\n\t\t}\n\n\t\teditor.document.on( 'change', ( event, type, changes ) => {\n\t\t\tif ( type != 'insert' ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// Take the first element. Typing shouldn't add more than one element at once.\n\t\t\t// And if it is not typing (e.g. paste), Autoformat should not be fired.\n\t\t\tconst value = changes.range.getItems().next().value;\n\n\t\t\tif ( !( value instanceof TextProxy ) ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tconst textNode = value.textNode;\n\t\t\tconst text = textNode.data;\n\n\t\t\t// Run matching only on non-empty paragraphs.\n\t\t\tif ( textNode.parent.name !== 'paragraph' || !text ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tconst match = pattern.exec( text );\n\n\t\t\tif ( !match ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\teditor.document.enqueueChanges( () => {\n\t\t\t\t// Create new batch to separate typing batch from the Autoformat changes.\n\t\t\t\tconst batch = editor.document.batch();\n\n\t\t\t\t// Matched range.\n\t\t\t\tconst range = Range.createFromParentsAndOffsets( textNode.parent, 0, textNode.parent, match[ 0 ].length );\n\n\t\t\t\t// Remove matched text.\n\t\t\t\tbatch.remove( range );\n\n\t\t\t\tcallback( { batch, match } );\n\t\t\t} );\n\t\t} );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-autoformat/src/blockautoformatengine.js\n// module id = 275\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module autoformat/inlineautoformatengine\n */\n\nimport LiveRange from '@ckeditor/ckeditor5-engine/src/model/liverange';\nimport getSchemaValidRanges from '@ckeditor/ckeditor5-core/src/command/helpers/getschemavalidranges';\n\n/**\n * The inline autoformatting engine. Allows to format various inline patterns. For example,\n * it can be configured to make \"foo\" bold when typed `**foo**` (the `**` markers will be removed).\n *\n * The autoformatting operation is integrated with the undo manager,\n * so the autoformatting step can be undone, if the user's intention wasn't to format the text.\n *\n * See the constructors documentation to learn how to create custom inline autoformatters. You can also use\n * the {@link module:autoformat/autoformat~Autoformat} feature which enables a set of default autoformatters\n * (lists, headings, bold and italic).\n */\nexport default class InlineAutoformatEngine {\n\t/**\n\t * Enables autoformatting mechanism on a given {@link module:core/editor/editor~Editor}.\n\t *\n\t * It formats the matched text by applying given model attribute or by running the provided formatting callback.\n\t * Each time data model changes text from given node (from the beginning of the current node to the collapsed\n\t * selection location) will be tested.\n\t *\n\t * @param {module:core/editor/editor~Editor} editor Editor instance.\n\t * @param {Function|RegExp} testRegexpOrCallback RegExp or callback to execute on text.\n\t * Provided RegExp *must* have three capture groups. First and third capture groups\n\t * should match opening/closing delimiters. Second capture group should match text to format.\n\t *\n\t *\t\t// Matches `**bold text**` pattern.\n\t *\t\t// There are three capturing groups:\n\t *\t\t// - first to match starting `**` delimiter,\n\t *\t\t// - second to match text to format,\n\t *\t\t// - third to match ending `**` delimiter.\n\t *\t\tnew InlineAutoformatEngine( this.editor, /(\\*\\*)([^\\*]+?)(\\*\\*)$/g, 'bold' );\n\t *\n\t * When function is provided instead of RegExp, it will be executed with text to match as a parameter. Function\n\t * should return proper \"ranges\" to delete and format.\n\t *\n\t *\t\t{\n\t *\t\t\tremove: [\n\t *\t\t\t\t[ 0, 1 ],\t// Remove first letter from the given text.\n\t *\t\t\t\t[ 5, 6 ]\t// Remove 6th letter from the given text.\n\t *\t\t\t],\n\t *\t\t\tformat: [\n\t *\t\t\t\t[ 1, 5 ]\t// Format all letters from 2nd to 5th.\n\t *\t\t\t]\n\t *\t\t}\n\t *\n\t * @param {Function|String} attributeOrCallback Name of attribute to apply on matching text or callback for manual\n\t * formatting.\n\t *\n\t *\t\t// Use attribute name:\n\t *\t\tnew InlineAutoformatEngine( this.editor, /(\\*\\*)([^\\*]+?)(\\*\\*)$/g, 'bold' );\n\t *\n\t *\t\t// Use formatting callback:\n\t *\t\tnew InlineAutoformatEngine( this.editor, /(\\*\\*)([^\\*]+?)(\\*\\*)$/g, ( batch, validRanges ) => {\n\t *\t\t\tfor ( let range of validRanges ) {\n\t *\t\t\t\tbatch.setAttribute( range, command, true );\n\t *\t\t\t}\n\t *\t\t} );\n\t */\n\tconstructor( editor, testRegexpOrCallback, attributeOrCallback ) {\n\t\tthis.editor = editor;\n\n\t\tlet regExp;\n\t\tlet command;\n\t\tlet testCallback;\n\t\tlet formatCallback;\n\n\t\tif ( testRegexpOrCallback instanceof RegExp ) {\n\t\t\tregExp = testRegexpOrCallback;\n\t\t} else {\n\t\t\ttestCallback = testRegexpOrCallback;\n\t\t}\n\n\t\tif ( typeof attributeOrCallback == 'string' ) {\n\t\t\tcommand = attributeOrCallback;\n\t\t} else {\n\t\t\tformatCallback = attributeOrCallback;\n\t\t}\n\n\t\t// A test callback run on changed text.\n\t\ttestCallback = testCallback || ( ( text ) => {\n\t\t\tlet result;\n\t\t\tlet remove = [];\n\t\t\tlet format = [];\n\n\t\t\twhile ( ( result = regExp.exec( text ) ) !== null ) {\n\t\t\t\t// There should be full match and 3 capture groups.\n\t\t\t\tif ( result && result.length < 4 ) {\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\n\t\t\t\tlet {\n\t\t\t\t\tindex,\n\t\t\t\t\t'1': leftDel,\n\t\t\t\t\t'2': content,\n\t\t\t\t\t'3': rightDel\n\t\t\t\t} = result;\n\n\t\t\t\t// Real matched string - there might be some non-capturing groups so we need to recalculate starting index.\n\t\t\t\tconst found = leftDel + content + rightDel;\n\t\t\t\tindex += result[ 0 ].length - found.length;\n\n\t\t\t\t// Start and End offsets of delimiters to remove.\n\t\t\t\tconst delStart = [\n\t\t\t\t\tindex,\n\t\t\t\t\tindex + leftDel.length\n\t\t\t\t];\n\t\t\t\tconst delEnd = [\n\t\t\t\t\tindex + leftDel.length + content.length,\n\t\t\t\t\tindex + leftDel.length + content.length + rightDel.length\n\t\t\t\t];\n\n\t\t\t\tremove.push( delStart );\n\t\t\t\tremove.push( delEnd );\n\n\t\t\t\tformat.push( [ index + leftDel.length, index + leftDel.length + content.length ] );\n\t\t\t}\n\n\t\t\treturn {\n\t\t\t\tremove,\n\t\t\t\tformat\n\t\t\t};\n\t\t} );\n\n\t\t// A format callback run on matched text.\n\t\tformatCallback = formatCallback || ( ( batch, validRanges ) => {\n\t\t\tfor ( let range of validRanges ) {\n\t\t\t\tbatch.setAttribute( range, command, true );\n\t\t\t}\n\t\t} );\n\n\t\teditor.document.on( 'change', ( evt, type ) => {\n\t\t\tif ( type !== 'insert' ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tconst selection = this.editor.document.selection;\n\n\t\t\tif ( !selection.isCollapsed || !selection.focus || !selection.focus.parent ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tconst block = selection.focus.parent;\n\t\t\tconst text = getText( block ).slice( 0, selection.focus.offset );\n\t\t\tconst ranges = testCallback( text );\n\t\t\tconst rangesToFormat = [];\n\n\t\t\t// Apply format before deleting text.\n\t\t\tranges.format.forEach( ( range ) => {\n\t\t\t\tif ( range[ 0 ] === undefined || range[ 1 ] === undefined ) {\n\t\t\t\t\treturn;\n\t\t\t\t}\n\n\t\t\t\trangesToFormat.push( LiveRange.createFromParentsAndOffsets(\n\t\t\t\t\tblock, range[ 0 ],\n\t\t\t\t\tblock, range[ 1 ]\n\t\t\t\t) );\n\t\t\t} );\n\n\t\t\tconst rangesToRemove = [];\n\n\t\t\t// Reverse order to not mix the offsets while removing.\n\t\t\tranges.remove.slice().reverse().forEach( ( range ) => {\n\t\t\t\tif ( range[ 0 ] === undefined || range[ 1 ] === undefined ) {\n\t\t\t\t\treturn;\n\t\t\t\t}\n\n\t\t\t\trangesToRemove.push( LiveRange.createFromParentsAndOffsets(\n\t\t\t\t\tblock, range[ 0 ],\n\t\t\t\t\tblock, range[ 1 ]\n\t\t\t\t) );\n\t\t\t} );\n\n\t\t\tif ( !( rangesToFormat.length && rangesToRemove.length ) ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tconst batch = editor.document.batch();\n\n\t\t\teditor.document.enqueueChanges( () => {\n\t\t\t\tconst validRanges = getSchemaValidRanges( command, rangesToFormat, editor.document.schema );\n\n\t\t\t\t// Apply format.\n\t\t\t\tformatCallback( batch, validRanges );\n\n\t\t\t\t// Remove delimiters.\n\t\t\t\tfor ( let range of rangesToRemove ) {\n\t\t\t\t\tbatch.remove( range );\n\t\t\t\t}\n\t\t\t} );\n\t\t} );\n\t}\n}\n\n// Returns whole text from parent element by adding all data from text nodes together.\n//\n// @private\n// @param {module:engine/model/element~Element} element\n// @returns {String}\nfunction getText( element ) {\n\treturn Array.from( element.getChildren() ).reduce( ( a, b ) => a + b.data, '' );\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-autoformat/src/inlineautoformatengine.js\n// module id = 276\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module basic-styles/bold\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport BoldEngine from './boldengine';\nimport ButtonView from '@ckeditor/ckeditor5-ui/src/button/buttonview';\nimport boldIcon from '../theme/icons/bold.svg';\n\n/**\n * The bold feature. It introduces the Bold button and the <kbd>Ctrl+B</kbd> keystroke.\n *\n * It uses the {@link module:basic-styles/boldengine~BoldEngine bold engine feature}.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class Bold extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get requires() {\n\t\treturn [ BoldEngine ];\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get pluginName() {\n\t\treturn 'basic-styles/bold';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tconst editor = this.editor;\n\t\tconst t = editor.t;\n\t\tconst command = editor.commands.get( 'bold' );\n\t\tconst keystroke = 'CTRL+B';\n\n\t\t// Add bold button to feature components.\n\t\teditor.ui.componentFactory.add( 'bold', ( locale ) => {\n\t\t\tconst view = new ButtonView( locale );\n\n\t\t\tview.set( {\n\t\t\t\tlabel: t( 'Bold' ),\n\t\t\t\ticon: boldIcon,\n\t\t\t\tkeystroke,\n\t\t\t\ttooltip: true\n\t\t\t} );\n\n\t\t\tview.bind( 'isOn', 'isEnabled' ).to( command, 'value', 'isEnabled' );\n\n\t\t\t// Execute command.\n\t\t\tthis.listenTo( view, 'execute', () => editor.execute( 'bold' ) );\n\n\t\t\treturn view;\n\t\t} );\n\n\t\t// Set the Ctrl+B keystroke.\n\t\teditor.keystrokes.set( keystroke, 'bold' );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-basic-styles/src/bold.js\n// module id = 277\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module basic-styles/italic\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport ItalicEngine from './italicengine';\nimport ButtonView from '@ckeditor/ckeditor5-ui/src/button/buttonview';\nimport italicIcon from '../theme/icons/italic.svg';\n\n/**\n * The italic feature. It introduces the Italic button and the <kbd>Ctrl+I</kbd> keystroke.\n *\n * It uses the {@link module:basic-styles/italicengine~ItalicEngine italic engine feature}.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class Italic extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get requires() {\n\t\treturn [ ItalicEngine ];\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get pluginName() {\n\t\treturn 'basic-styles/italic';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tconst editor = this.editor;\n\t\tconst t = editor.t;\n\t\tconst command = editor.commands.get( 'italic' );\n\t\tconst keystroke = 'CTRL+I';\n\n\t\t// Add bold button to feature components.\n\t\teditor.ui.componentFactory.add( 'italic', ( locale ) => {\n\t\t\tconst view = new ButtonView( locale );\n\n\t\t\tview.set( {\n\t\t\t\tlabel: t( 'Italic' ),\n\t\t\t\ticon: italicIcon,\n\t\t\t\tkeystroke,\n\t\t\t\ttooltip: true\n\t\t\t} );\n\n\t\t\tview.bind( 'isOn', 'isEnabled' ).to( command, 'value', 'isEnabled' );\n\n\t\t\t// Execute command.\n\t\t\tthis.listenTo( view, 'execute', () => editor.execute( 'italic' ) );\n\n\t\t\treturn view;\n\t\t} );\n\n\t\t// Set the Ctrl+I keystroke.\n\t\teditor.keystrokes.set( keystroke, 'italic' );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-basic-styles/src/italic.js\n// module id = 278\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module block-quote/blockquote\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport BlockQuoteEngine from './blockquoteengine';\n\nimport ButtonView from '@ckeditor/ckeditor5-ui/src/button/buttonview';\n\nimport quoteIcon from '@ckeditor/ckeditor5-core/theme/icons/quote.svg';\nimport '../theme/theme.scss';\n\n/**\n * The block quote plugin.\n *\n * It introduces the `'blockQuote'` button and requires {@link module:block-quote/blockquoteengine~BlockQuoteEngine}\n * plugin. It also changes <kbd>Enter</kbd> key behavior so it escapes block quotes when pressed in an\n * empty quoted block.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class BlockQuote extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get requires() {\n\t\treturn [ BlockQuoteEngine ];\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get pluginName() {\n\t\treturn 'block-quote/blockquote';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tconst editor = this.editor;\n\t\tconst t = editor.t;\n\t\tconst command = editor.commands.get( 'blockQuote' );\n\n\t\teditor.ui.componentFactory.add( 'blockQuote', ( locale ) => {\n\t\t\tconst buttonView = new ButtonView( locale );\n\n\t\t\tbuttonView.set( {\n\t\t\t\tlabel: t( 'Block quote' ),\n\t\t\t\ticon: quoteIcon,\n\t\t\t\ttooltip: true\n\t\t\t} );\n\n\t\t\t// Bind button model to command.\n\t\t\tbuttonView.bind( 'isOn', 'isEnabled' ).to( command, 'value', 'isEnabled' );\n\n\t\t\t// Execute command.\n\t\t\tthis.listenTo( buttonView, 'execute', () => editor.execute( 'blockQuote' ) );\n\n\t\t\treturn buttonView;\n\t\t} );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tafterInit() {\n\t\tconst editor = this.editor;\n\t\tconst command = editor.commands.get( 'blockQuote' );\n\n\t\t// Overwrite default enter key behavior.\n\t\t// If enter key is pressed with selection collapsed in empty block inside a quote, break the quote.\n\t\t// This listener is added in afterInit in order to register it after list's feature listener.\n\t\t// We can't use a priority for this, because 'low' is already used by the enter feature, unless\n\t\t// we'd use numeric priority in this case.\n\t\tthis.listenTo( this.editor.editing.view, 'enter', ( evt, data ) => {\n\t\t\tconst doc = this.editor.document;\n\t\t\tconst positionParent = doc.selection.getLastPosition().parent;\n\n\t\t\tif ( doc.selection.isCollapsed && positionParent.isEmpty && command.value ) {\n\t\t\t\tthis.editor.execute( 'blockQuote' );\n\n\t\t\t\tdata.preventDefault();\n\t\t\t\tevt.stop();\n\t\t\t}\n\t\t} );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-block-quote/src/blockquote.js\n// module id = 279\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module block-quote/blockquotecommand\n */\n\nimport Command from '@ckeditor/ckeditor5-core/src/command/command';\nimport Position from '@ckeditor/ckeditor5-engine/src/model/position';\nimport Element from '@ckeditor/ckeditor5-engine/src/model/element';\nimport Range from '@ckeditor/ckeditor5-engine/src/model/range';\nimport first from '@ckeditor/ckeditor5-utils/src/first';\n\n/**\n * The block quote command.\n *\n * @extends module:core/command/command~Command\n */\nexport default class BlockQuoteCommand extends Command {\n\t/**\n\t * @inheritDoc\n\t */\n\tconstructor( editor ) {\n\t\tsuper( editor );\n\n\t\t/**\n\t\t * Flag indicating whether the command is active. It's on when the selection starts\n\t\t * in a quoted block.\n\t\t *\n\t\t * @readonly\n\t\t * @observable\n\t\t * @member {Boolean} #value\n\t\t */\n\t\tthis.set( 'value', false );\n\n\t\t// Update current value each time changes are done to the document.\n\t\tthis.listenTo( editor.document, 'changesDone', () => {\n\t\t\tthis.refreshValue();\n\t\t\tthis.refreshState();\n\t\t} );\n\t}\n\n\t/**\n\t * Updates command's {@link #value} based on the current selection.\n\t */\n\trefreshValue() {\n\t\tconst firstBlock = first( this.editor.document.selection.getSelectedBlocks() );\n\n\t\t// In the current implementation, the block quote must be an immediate parent of a block element.\n\t\tthis.value = !!( firstBlock && findQuote( firstBlock ) );\n\t}\n\n\t/**\n\t * Executes the command. When the command {@link #value is on}, then all block quotes within\n\t * the selection will be removed. If it's off, then all selected blocks will be wrapped with\n\t * a block quote.\n\t *\n\t * @protected\n\t * @param {Object} [options] Options for executed command.\n\t * @param {module:engine/model/batch~Batch} [options.batch] Batch to collect all the change steps.\n\t * New batch will be created if this option is not set.\n\t */\n\t_doExecute( options = {} ) {\n\t\tconst doc = this.editor.document;\n\t\tconst batch = options.batch || doc.batch();\n\t\tconst blocks = Array.from( doc.selection.getSelectedBlocks() );\n\n\t\tdoc.enqueueChanges( () => {\n\t\t\tif ( this.value ) {\n\t\t\t\tthis._removeQuote( batch, blocks.filter( findQuote ) );\n\t\t\t} else {\n\t\t\t\tthis._applyQuote( batch, blocks );\n\t\t\t}\n\t\t} );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\t_checkEnabled() {\n\t\tif ( this.value ) {\n\t\t\treturn true;\n\t\t}\n\n\t\tconst selection = this.editor.document.selection;\n\t\tconst schema = this.editor.document.schema;\n\n\t\tconst firstBlock = first( selection.getSelectedBlocks() );\n\n\t\tif ( !firstBlock ) {\n\t\t\treturn false;\n\t\t}\n\n\t\tconst isMQAllowed = schema.check( {\n\t\t\tname: 'blockQuote',\n\t\t\tinside: Position.createBefore( firstBlock )\n\t\t} );\n\t\tconst isBlockAllowed = schema.check( {\n\t\t\tname: firstBlock.name,\n\t\t\tattributes: Array.from( firstBlock.getAttributeKeys() ),\n\t\t\tinside: 'blockQuote'\n\t\t} );\n\n\t\t// Whether <mQ> can wrap the block.\n\t\treturn isMQAllowed && isBlockAllowed;\n\t}\n\n\t/**\n\t * Removes the quote from the given blocks.\n\t *\n\t * If blocks which are supposed to be \"unquoted\" are in the middle of a quote,\n\t * start it or end it, then the quote will be split (if needed) and the blocks\n\t * will be moved out of it, so other quoted blocks remained quoted.\n\t *\n\t * @param {module:engine/model/batch~Batch} batch\n\t * @param {Array.<module:engine/model/element~Element>} blocks\n\t */\n\t_removeQuote( batch, blocks ) {\n\t\t// Unquote all groups of block. Iterate in the reverse order to not break following ranges.\n\t\tgetRangesOfBlockGroups( blocks ).reverse().forEach( ( groupRange ) => {\n\t\t\tif ( groupRange.start.isAtStart && groupRange.end.isAtEnd ) {\n\t\t\t\tbatch.unwrap( groupRange.start.parent );\n\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// The group of blocks are at the beginning of an <mQ> so let's move them left (out of the <mQ>).\n\t\t\tif ( groupRange.start.isAtStart ) {\n\t\t\t\tconst positionBefore = Position.createBefore( groupRange.start.parent );\n\n\t\t\t\tbatch.move( groupRange, positionBefore );\n\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// The blocks are in the middle of an <mQ> so we need to split the <mQ> after the last block\n\t\t\t// so we move the items there.\n\t\t\tif ( !groupRange.end.isAtEnd ) {\n\t\t\t\tbatch.split( groupRange.end );\n\t\t\t}\n\n\t\t\t// Now we are sure that groupRange.end.isAtEnd is true, so let's move the blocks right.\n\n\t\t\tconst positionAfter = Position.createAfter( groupRange.end.parent );\n\n\t\t\tbatch.move( groupRange, positionAfter );\n\t\t} );\n\t}\n\n\t/**\n\t * Applies the quote to the given blocks.\n\t *\n\t * @param {module:engine/model/batch~Batch} batch\n\t * @param {Array.<module:engine/model/element~Element>} blocks\n\t */\n\t_applyQuote( batch, blocks ) {\n\t\tconst quotesToMerge = [];\n\n\t\t// Quote all groups of block. Iterate in the reverse order to not break following ranges.\n\t\tgetRangesOfBlockGroups( blocks ).reverse().forEach( ( groupRange ) => {\n\t\t\tlet quote = findQuote( groupRange.start );\n\n\t\t\tif ( !quote ) {\n\t\t\t\tquote = new Element( 'blockQuote' );\n\n\t\t\t\tbatch.wrap( groupRange, quote );\n\t\t\t}\n\n\t\t\tquotesToMerge.push( quote );\n\t\t} );\n\n\t\t// Merge subsequent <mQ> elements. Reverse the order again because this time we want to go through\n\t\t// the <mQ> elements in the source order (due to how merge works – it moves the right element's content\n\t\t// to the first element and removes the right one. Since we may need to merge a couple of subsequent `<mQ>` elements\n\t\t// we want to keep the reference to the first (furthest left) one.\n\t\tquotesToMerge.reverse().reduce( ( currentQuote, nextQuote ) => {\n\t\t\tif ( currentQuote.nextSibling == nextQuote ) {\n\t\t\t\tbatch.merge( Position.createAfter( currentQuote ) );\n\n\t\t\t\treturn currentQuote;\n\t\t\t}\n\n\t\t\treturn nextQuote;\n\t\t} );\n\t}\n}\n\nfunction findQuote( elementOrPosition ) {\n\treturn elementOrPosition.parent.name == 'blockQuote' ? elementOrPosition.parent : null;\n}\n\n// Returns a minimal array of ranges containing groups of subsequent blocks.\n//\n// content:         abcdefgh\n// blocks:          [ a, b, d , f, g, h ]\n// output ranges:   [ab]c[d]e[fgh]\n//\n// @param {Array.<module:engine/model/element~Element>} blocks\n// @returns {Array.<module:engine/model/range~Range>}\nfunction getRangesOfBlockGroups( blocks ) {\n\tlet startPosition;\n\tlet i = 0;\n\tconst ranges = [];\n\n\twhile ( i < blocks.length ) {\n\t\tconst block = blocks[ i ];\n\t\tconst nextBlock = blocks[ i + 1 ];\n\n\t\tif ( !startPosition ) {\n\t\t\tstartPosition = Position.createBefore( block );\n\t\t}\n\n\t\tif ( !nextBlock || block.nextSibling != nextBlock ) {\n\t\t\tranges.push( new Range( startPosition, Position.createAfter( block ) ) );\n\t\t\tstartPosition = null;\n\t\t}\n\n\t\ti++;\n\t}\n\n\treturn ranges;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-block-quote/src/blockquotecommand.js\n// module id = 280\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module block-quote/blockquoteengine\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\n\nimport BlockQuoteCommand from './blockquotecommand';\n\nimport buildViewConverter from '@ckeditor/ckeditor5-engine/src/conversion/buildviewconverter';\nimport buildModelConverter from '@ckeditor/ckeditor5-engine/src/conversion/buildmodelconverter';\n\n/**\n * The block quote engine.\n *\n * Introduces the `'blockQuote'` command and `'blockQuote'` model element.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class BlockQuoteEngine extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tconst editor = this.editor;\n\t\tconst schema = editor.document.schema;\n\n\t\teditor.commands.set( 'blockQuote', new BlockQuoteCommand( editor ) );\n\n\t\tschema.registerItem( 'blockQuote' );\n\t\tschema.allow( { name: 'blockQuote', inside: '$root' } );\n\t\tschema.allow( { name: '$block', inside: 'blockQuote' } );\n\n\t\tbuildViewConverter().for( editor.data.viewToModel )\n\t\t\t.fromElement( 'blockquote' )\n\t\t\t.toElement( 'blockQuote' );\n\n\t\tbuildModelConverter().for( editor.data.modelToView, editor.editing.modelToView )\n\t\t\t.fromElement( 'blockQuote' )\n\t\t\t.toElement( 'blockquote' );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tafterInit() {\n\t\tconst schema = this.editor.document.schema;\n\n\t\t// TODO\n\t\t// Workaround for https://github.com/ckeditor/ckeditor5-engine/issues/532#issuecomment-280924650.\n\t\tif ( schema.hasItem( 'listItem' ) ) {\n\t\t\tschema.allow( {\n\t\t\t\tname: 'listItem',\n\t\t\t\tinside: 'blockQuote',\n\t\t\t\tattributes: [ 'type', 'indent' ]\n\t\t\t} );\n\t\t}\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-block-quote/src/blockquoteengine.js\n// module id = 281\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module clipboard/clipboard\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\n\nimport ClipboardObserver from './clipboardobserver';\n\nimport plainTextToHtml from './utils/plaintexttohtml';\nimport normalizeClipboardHtml from './utils/normalizeclipboarddata';\n\nimport HtmlDataProcessor from '@ckeditor/ckeditor5-engine/src/dataprocessor/htmldataprocessor';\n\n/**\n * The clipboard feature. Currently, it's only responsible for intercepting the `paste` event and\n * passing the pasted content through the clipboard pipeline.\n *\n * ## Clipboard input pipeline\n *\n * The feature creates the clipboard input pipeline which allows processing clipboard content\n * before it gets inserted into the editor. The pipeline consists of two events on which\n * the features can listen in order to modify or totally override the default behavior.\n *\n * ### On {@link module:engine/view/document~Document#event:paste}\n *\n * The default action is to:\n *\n * 1. get HTML or plain text from the clipboard,\n * 2. prevent the default action of the native `paste` event,\n * 3. fire {@link module:engine/view/document~Document#event:clipboardInput} with the clipboard data parsed to\n * a {@link module:engine/view/documentfragment~DocumentFragment view document fragment}.\n *\n * This action is performed by a low priority listener, so it can be overridden by a normal one\n * when a deeper change in pasting behavior is needed. For example, a feature which wants to differently read\n * data from the clipboard (the {@link module:clipboard/datatransfer~DataTransfer `DataTransfer`}).\n * should plug a listener at this stage.\n *\n * ### On {@link module:engine/view/document~Document#event:clipboardInput}\n *\n * The default action is to insert the content (`data.content`, represented by a\n * {@link module:engine/view/documentfragment~DocumentFragment}) to an editor if the data is not empty.\n *\n * This action is performed by a low priority listener, so it can be overridden by a normal one.\n *\n * At this stage the pasted content can be processed by the features. E.g. a feature which wants to transform\n * a pasted text into a link can be implemented in this way:\n *\n *\t\tthis.listenTo( editor.editing.view, 'clipboardInput', ( evt, data ) => {\n *\t\t\tif ( data.content.childCount == 1 && isUrlText( data.content.getChild( 0 ) ) ) {\n *\t\t\t\tconst linkUrl = data.content.getChild( 0 ).data;\n *\n *\t\t\t\tdata.content = new ViewDocumentFragment( [\n *\t\t\t\t\tViewElement(\n *\t\t\t\t\t\t'a',\n *\t\t\t\t\t\t{ href: linkUrl },\n *\t\t\t\t\t\t[ new ViewText( linkUrl ) ]\n *\t\t\t\t\t)\n *\t\t\t\t] );\n *\t\t\t}\n *\t\t} );\n *\n * ## Clipboard output pipeline\n *\n * The output pipeline is the equivalent of the input pipeline but for the copy and cut operations.\n * It allows to process the content which will be then put into the clipboard or to override the whole process.\n *\n * ### On {@link module:engine/view/document~Document#event:copy} and {@link module:engine/view/document~Document#event:cut}\n *\n * The default action is to:\n *\n * 1. {@link module:engine/controller/datacontroller~DataController#getSelectedContent get selected content} from the editor,\n * 2. prevent the default action of the native `copy` or `cut` event,\n * 3. fire {@link module:engine/view/document~Document#event:clipboardOutput} with a clone of the selected content\n * converted to a {@link module:engine/view/documentfragment~DocumentFragment view document fragment}.\n *\n * ### On {@link module:engine/view/document~Document#event:clipboardOutput}\n *\n * The default action is to put the content (`data.content`, represented by a\n * {@link module:engine/view/documentfragment~DocumentFragment}) to the clipboard as HTML. In case of the cut operation,\n * the selected content is also deleted from the editor.\n *\n * This action is performed by a low priority listener, so it can be overridden by a normal one.\n *\n * At this stage the copied/cut content can be processed by the features.\n *\n * @extends module:core.plugin~Plugin\n */\nexport default class Clipboard extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get pluginName() {\n\t\treturn 'clipboard/clipboard';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tconst editor = this.editor;\n\t\tconst doc = editor.document;\n\t\tconst editingView = editor.editing.view;\n\n\t\t/**\n\t\t * Data processor used to convert pasted HTML to a view structure.\n\t\t *\n\t\t * @private\n\t\t * @member {module:engine/dataprocessor/htmldataprocessor~HtmlDataProcessor} #_htmlDataProcessor\n\t\t */\n\t\tthis._htmlDataProcessor = new HtmlDataProcessor();\n\n\t\teditingView.addObserver( ClipboardObserver );\n\n\t\t// The clipboard paste pipeline.\n\n\t\tthis.listenTo( editingView, 'paste', ( evt, data ) => {\n\t\t\tconst dataTransfer = data.dataTransfer;\n\t\t\tlet content = '';\n\n\t\t\tif ( dataTransfer.getData( 'text/html' ) ) {\n\t\t\t\tcontent = normalizeClipboardHtml( dataTransfer.getData( 'text/html' ) );\n\t\t\t} else if ( dataTransfer.getData( 'text/plain' ) ) {\n\t\t\t\tcontent = plainTextToHtml( dataTransfer.getData( 'text/plain' ) );\n\t\t\t}\n\n\t\t\tcontent = this._htmlDataProcessor.toView( content );\n\n\t\t\tdata.preventDefault();\n\n\t\t\teditingView.fire( 'clipboardInput', { dataTransfer, content } );\n\t\t}, { priority: 'low' } );\n\n\t\tthis.listenTo( editingView, 'clipboardInput', ( evt, data ) => {\n\t\t\tif ( !data.content.isEmpty ) {\n\t\t\t\tconst dataController = this.editor.data;\n\n\t\t\t\t// Convert the pasted content to a model document fragment.\n\t\t\t\t// Convertion is contextual, but in this case we need an \"all allowed\" context and for that\n\t\t\t\t// we use the $clipboardHolder item.\n\t\t\t\tconst modelFragment = dataController.toModel( data.content, '$clipboardHolder' );\n\n\t\t\t\tdoc.enqueueChanges( () => {\n\t\t\t\t\tdataController.insertContent( modelFragment, doc.selection );\n\t\t\t\t} );\n\t\t\t}\n\t\t}, { priority: 'low' } );\n\n\t\t// The clipboard copy/cut pipeline.\n\n\t\tconst onCopyCut = ( evt, data ) => {\n\t\t\tconst dataTransfer = data.dataTransfer;\n\t\t\tconst content = editor.data.toView( editor.data.getSelectedContent( doc.selection ) );\n\n\t\t\tdata.preventDefault();\n\n\t\t\teditingView.fire( 'clipboardOutput', { dataTransfer, content, method: evt.name } );\n\t\t};\n\n\t\tthis.listenTo( editingView, 'copy', onCopyCut, { priority: 'low' } );\n\t\tthis.listenTo( editingView, 'cut', onCopyCut, { priority: 'low' } );\n\n\t\tthis.listenTo( editingView, 'clipboardOutput', ( evt, data ) => {\n\t\t\tif ( !data.content.isEmpty ) {\n\t\t\t\tdata.dataTransfer.setData( 'text/html', this._htmlDataProcessor.toData( data.content ) );\n\t\t\t}\n\n\t\t\tif ( data.method == 'cut' ) {\n\t\t\t\tdoc.enqueueChanges( () => {\n\t\t\t\t\teditor.data.deleteContent( doc.selection, doc.batch(), { merge: true } );\n\t\t\t\t} );\n\t\t\t}\n\t\t}, { priority: 'low' } );\n\t}\n}\n\n/**\n * Fired with a content which comes from the clipboard (was pasted or dropped) and\n * should be processed in order to be inserted into the editor.\n * It's part of the {@link module:clipboard/clipboard~Clipboard \"clipboard pipeline\"}.\n *\n * @see module:clipboard/clipboardobserver~ClipboardObserver\n * @see module:clipboard/clipboard~Clipboard\n * @event module:engine/view/document~Document#event:clipboardInput\n * @param {module:clipboard/clipboard~ClipboardInputEventData} data Event data.\n */\n\n/**\n * The value of the {@link module:engine/view/document~Document#event:clipboardInput} event.\n *\n * @class module:clipboard/clipboard~ClipboardInputEventData\n */\n\n/**\n * Data transfer instance.\n *\n * @readonly\n * @member {module:clipboard/datatransfer~DataTransfer} module:clipboard/clipboard~ClipboardInputEventData#dataTransfer\n */\n\n/**\n * Content to be inserted into the editor. It can be modified by the event listeners.\n * Read more about the clipboard pipelines in {@link module:clipboard/clipboard~Clipboard}.\n *\n * @member {module:engine/view/documentfragment~DocumentFragment} module:clipboard/clipboard~ClipboardInputEventData#content\n */\n\n/**\n * Fired on {@link module:engine/view/document~Document#event:copy} and {@link module:engine/view/document~Document#event:cut}\n * with a copy of selected content. The content can be processed before it ends up in the clipboard.\n * It's part of the {@link module:clipboard/clipboard~Clipboard \"clipboard pipeline\"}.\n *\n * @see module:clipboard/clipboardobserver~ClipboardObserver\n * @see module:clipboard/clipboard~Clipboard\n * @event module:engine/view/document~Document#event:clipboardOutput\n * @param {module:clipboard/clipboard/ClipboardOutputEventData} data Event data.\n */\n\n/**\n * The value of the {@link module:engine/view/document~Document#event:clipboardOutput} event.\n *\n * @class module:clipboard/clipboard/ClipboardOutputEventData\n */\n\n/**\n * Data transfer instance.\n *\n * @readonly\n * @member {module:clipboard/datatransfer~DataTransfer} module:clipboard/clipboard~ClipboardOutputEventData#dataTransfer\n */\n\n/**\n * Content to be put into the clipboard. It can be modified by the event listeners.\n * Read more about the clipboard pipelines in {@link module:clipboard/clipboard~Clipboard}.\n *\n * @member {module:engine/view/documentfragment~DocumentFragment} module:clipboard/clipboard~ClipboardOutputEventData#content\n */\n\n/**\n * Whether the event was triggered by copy or cut operation.\n *\n * @member {'copy'|'cut'} module:clipboard/clipboard~ClipboardOutputEventData#method\n */\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-clipboard/src/clipboard.js\n// module id = 282\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module clipboard/clipboardobserver\n */\n\nimport DomEventObserver from '@ckeditor/ckeditor5-engine/src/view/observer/domeventobserver';\nimport DataTransfer from './datatransfer';\n\n/**\n * {@link module:engine/view/document~Document#event:paste Paste} event observer.\n *\n * Note that this observer is not available by default. To make it available it needs to be added to\n * {@link module:engine/view/document~Document} by the {@link module:engine/view/document~Document#addObserver} method.\n *\n * @extends module:engine/view/observer/domeventobserver~DomEventObserver\n */\nexport default class ClipboardObserver extends DomEventObserver {\n\tconstructor( doc ) {\n\t\tsuper( doc );\n\n\t\tthis.domEventType = [ 'paste', 'copy', 'cut' ];\n\t}\n\n\tonDomEvent( domEvent ) {\n\t\tthis.fire( domEvent.type, domEvent, {\n\t\t\tdataTransfer: new DataTransfer( domEvent.clipboardData )\n\t\t} );\n\t}\n}\n\n/**\n * Fired when user pasted content into one of the editables.\n *\n * Introduced by {@link module:clipboard/clipboardobserver~ClipboardObserver}.\n *\n * Note that this event is not available by default. To make it available {@link module:clipboard/clipboardobserver~ClipboardObserver}\n * needs to be added to {@link module:engine/view/document~Document} by the {@link module:engine/view/document~Document#addObserver} method.\n * It's done by the {@link module:clipboard/clipboard~Clipboard} feature. If it's not loaded, it must be done manually.\n *\n * @see module:clipboard/clipboardobserver~ClipboardObserver\n * @event module:engine/view/document~Document#event:paste\n * @param {module:clipboard/clipboardobserver~ClipboardEventData} data Event data.\n */\n\n/**\n * Fired when user copied content from one of the editables.\n *\n * Introduced by {@link module:clipboard/clipboardobserver~ClipboardObserver}.\n *\n * Note that this event is not available by default. To make it available {@link module:clipboard/clipboardobserver~ClipboardObserver}\n * needs to be added to {@link module:engine/view/document~Document} by the {@link module:engine/view/document~Document#addObserver} method.\n * It's done by the {@link module:clipboard/clipboard~Clipboard} feature. If it's not loaded, it must be done manually.\n *\n * @see module:clipboard/clipboardobserver~ClipboardObserver\n * @event module:engine/view/document~Document#event:copy\n * @param {module:clipboard/clipboardobserver~ClipboardEventData} data Event data.\n */\n\n/**\n * Fired when user cut content from one of the editables.\n *\n * Introduced by {@link module:clipboard/clipboardobserver~ClipboardObserver}.\n *\n * Note that this event is not available by default. To make it available {@link module:clipboard/clipboardobserver~ClipboardObserver}\n * needs to be added to {@link module:engine/view/document~Document} by the {@link module:engine/view/document~Document#addObserver} method.\n * It's done by the {@link module:clipboard/clipboard~Clipboard} feature. If it's not loaded, it must be done manually.\n *\n * @see module:clipboard/clipboardobserver~ClipboardObserver\n * @event module:engine/view/document~Document#event:cut\n * @param {module:clipboard/clipboardobserver~ClipboardEventData} data Event data.\n */\n\n/**\n * The value of the {@link module:engine/view/document~Document#event:paste},\n * {@link module:engine/view/document~Document#event:copy} and {@link module:engine/view/document~Document#event:cut} events.\n *\n * In order to access clipboard data use `dataTransfer` property.\n *\n * @class module:clipboard/clipboardobserver~ClipboardEventData\n * @extends module:engine/view/observer/domeventdata~DomEventData\n */\n\n/**\n * Data transfer instance.\n *\n * @readonly\n * @member {module:clipboard/datatransfer~DataTransfer} module:clipboard/clipboardobserver~ClipboardEventData#dataTransfer\n */\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-clipboard/src/clipboardobserver.js\n// module id = 283\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module clipboard/datatransfer\n */\n\n/**\n * Facade over the native [`DataTransfer`](https://developer.mozilla.org/en-US/docs/Web/API/DataTransfer) object.\n */\nexport default class DataTransfer {\n\tconstructor( nativeDataTransfer ) {\n\t\t/**\n\t\t * The native DataTransfer object.\n\t\t *\n\t\t * @private\n\t\t * @member {DataTransfer} #_native\n\t\t */\n\t\tthis._native = nativeDataTransfer;\n\t}\n\n\t/**\n\t * Gets data from the data transfer by its mime type.\n\t *\n\t *\t\tdataTransfer.getData( 'text/plain' );\n\t *\n\t * @param {String} type The mime type. E.g. `text/html` or `text/plain`.\n\t * @returns {String}\n\t */\n\tgetData( type ) {\n\t\treturn this._native.getData( type );\n\t}\n\n\t/**\n\t * Sets data in the data transfer.\n\t *\n\t * @param {String} type The mime type. E.g. `text/html` or `text/plain`.\n\t * @param {String} data\n\t */\n\tsetData( type, data ) {\n\t\tthis._native.setData( type, data );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-clipboard/src/datatransfer.js\n// module id = 284\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module clipboard/utils/normalizeclipboarddata\n */\n\n/**\n * Removes some popular browser quirks out of the clipboard data (HTML).\n *\n * @param {String} data The HTML data to normalize.\n * @returns {String} Normalized HTML.\n */\nexport default function normalizeClipboardData( data ) {\n\treturn data\n\t\t.replace( /<span class=\"Apple-converted-space\">(\\s+)<\\/span>/g, ( fullMatch, spaces ) => {\n\t\t\t// Handle the most popular and problematic case when even a single space becomes an nbsp;.\n\t\t\t// Decode those to normal spaces. Read more in https://github.com/ckeditor/ckeditor5-clipboard/issues/2.\n\t\t\tif ( spaces.length == 1 ) {\n\t\t\t\treturn ' ';\n\t\t\t}\n\n\t\t\treturn spaces;\n\t\t} );\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-clipboard/src/utils/normalizeclipboarddata.js\n// module id = 285\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module clipboard/utils/plaintexttohtml\n */\n\n/**\n * Converts plain text to its HTML-ized version.\n *\n * @param {String} text The plain text to convert.\n * @returns {String} HTML generated from the plain text.\n */\nexport default function plainTextToHtml( text ) {\n\ttext = text\n\t\t// Encode <>.\n\t\t.replace( /</g, '&lt;' )\n\t\t.replace( />/g, '&gt;' )\n\t\t// Creates paragraphs for double line breaks and change single line breaks to spaces.\n\t\t// In the future single line breaks may be converted into <br>s.\n\t\t.replace( /\\n\\n/g, '</p><p>' )\n\t\t.replace( /\\n/g, ' ' )\n\t\t// Preserve trailing spaces (only the first and last one – the rest is handled below).\n\t\t.replace( /^\\s/, '&nbsp;' )\n\t\t.replace( /\\s$/, '&nbsp;' )\n\t\t// Preserve other subsequent spaces now.\n\t\t.replace( /\\s\\s/g, ' &nbsp;' );\n\n\tif ( text.indexOf( '</p><p>' ) > -1 ) {\n\t\t// If we created paragraphs above, add the trailing ones.\n\t\ttext = `<p>${ text }</p>`;\n\t}\n\n\t// TODO:\n\t// * What about '\\nfoo' vs ' foo'?\n\n\treturn text;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-clipboard/src/utils/plaintexttohtml.js\n// module id = 286\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module core/editingkeystrokehandler\n */\n\nimport KeystrokeHandler from '@ckeditor/ckeditor5-utils/src/keystrokehandler';\n\n/**\n * A keystroke handler for editor editing. Its instance is available\n * in {@link module:core/editor/standardeditor~StandardEditor#keystrokes} so plugins\n * can register their keystrokes.\n *\n * E.g. an undo plugin would do this:\n *\n *\t\teditor.keystrokes.set( 'ctrl + Z', 'undo' );\n *\t\teditor.keystrokes.set( 'ctrl + shift + Z', 'redo' );\n *\t\teditor.keystrokes.set( 'ctrl + Y', 'redo' );\n *\n * @extends utils/keystrokehandler~KeystrokeHandler\n */\nexport default class EditingKeystrokeHandler extends KeystrokeHandler {\n\t/**\n\t * Creates an instance of the keystroke handler.\n\t *\n\t * @param {module:core/editor/editor~Editor} editor\n\t */\n\tconstructor( editor ) {\n\t\tsuper();\n\n\t\t/**\n\t\t * The editor instance.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:core/editor/editor~Editor}\n\t\t */\n\t\tthis.editor = editor;\n\t}\n\n\t/**\n\t * Registers a handler for the specified keystroke.\n\t *\n\t * * The handler can be specified as a command name or a callback.\n\t *\n\t * @param {String|Array.<String|Number>} keystroke Keystroke defined in a format accepted by\n\t * the {@link module:utils/keyboard~parseKeystroke} function.\n\t * @param {Function} callback If a string is passed, then the keystroke will\n\t * {@link module:core/editor/editor~Editor#execute execute a command}.\n\t * If a function, then it will be called with the\n\t * {@link module:engine/view/observer/keyobserver~KeyEventData key event data} object and\n\t * a helper to both `preventDefault` and `stopPropagation` of the event.\n\t */\n\tset( keystroke, callback ) {\n\t\tif ( typeof callback == 'string' ) {\n\t\t\tconst commandName = callback;\n\n\t\t\tcallback = () => {\n\t\t\t\tthis.editor.execute( commandName );\n\t\t\t};\n\t\t}\n\n\t\tsuper.set( keystroke, callback );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tlistenTo( emitter ) {\n\t\tthis._listener.listenTo( emitter, 'keydown', ( evt, data ) => {\n\t\t\tconst handled = this.press( data );\n\n\t\t\tif ( handled ) {\n\t\t\t\tdata.preventDefault();\n\t\t\t}\n\t\t} );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-core/src/editingkeystrokehandler.js\n// module id = 287\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module core/editor/editor\n */\n\nimport EmitterMixin from '@ckeditor/ckeditor5-utils/src/emittermixin';\nimport Config from '@ckeditor/ckeditor5-utils/src/config';\nimport PluginCollection from '../plugincollection';\nimport Locale from '@ckeditor/ckeditor5-utils/src/locale';\nimport DataController from '@ckeditor/ckeditor5-engine/src/controller/datacontroller';\nimport Document from '@ckeditor/ckeditor5-engine/src/model/document';\n\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\n\n/**\n * Class representing a basic editor. It contains a base architecture, without much additional logic.\n *\n * See also {@link module:core/editor/standardeditor~StandardEditor}.\n *\n * @mixes module:utils/emittermixin~EmitterMixin\n */\nexport default class Editor {\n\t/**\n\t * Creates a new instance of the Editor class.\n\t *\n\t * @param {Object} config The editor config.\n\t */\n\tconstructor( config ) {\n\t\tconst availablePlugins = this.constructor.build && this.constructor.build.plugins;\n\n\t\t/**\n\t\t * Holds all configurations specific to this editor instance.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:utils/config~Config}\n\t\t */\n\t\tthis.config = new Config( config, this.constructor.build && this.constructor.build.config );\n\n\t\tthis.config.define( 'plugins', availablePlugins );\n\n\t\t/**\n\t\t * The plugins loaded and in use by this editor instance.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:core/plugin~PluginCollection}\n\t\t */\n\t\tthis.plugins = new PluginCollection( this, availablePlugins );\n\n\t\t/**\n\t\t * Commands registered to the editor.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Map.<module:core/command/command~Command>}\n\t\t */\n\t\tthis.commands = new Map();\n\n\t\t/**\n\t\t * @readonly\n\t\t * @member {module:utils/locale~Locale}\n\t\t */\n\t\tthis.locale = new Locale( this.config.get( 'lang' ) );\n\n\t\t/**\n\t\t * Shorthand for {@link module:utils/locale~Locale#t}.\n\t\t *\n\t\t * @see module:utils/locale~Locale#t\n\t\t * @method #t\n\t\t */\n\t\tthis.t = this.locale.t;\n\n\t\t/**\n\t\t * Tree Model document managed by this editor.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/model/document~Document}\n\t\t */\n\t\tthis.document = new Document();\n\n\t\t/**\n\t\t * Instance of the {@link module:engine/controller/datacontroller~DataController data controller}.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/controller/datacontroller~DataController}\n\t\t */\n\t\tthis.data = new DataController( this.document );\n\n\t\t/**\n\t\t * Instance of the {@link module:engine/controller/editingcontroller~EditingController editing controller}.\n\t\t *\n\t\t * This property is set by more specialized editor classes (such as {@link module:core/editor/standardeditor~StandardEditor}),\n\t\t * however, it's required for features to work as their engine-related parts will try to connect converters.\n\t\t *\n\t\t * When defining a virtual editor class, like one working in Node.js, it's possible to plug a virtual\n\t\t * editing controller which only instantiates necessary properties, but without any observers and listeners.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/controller/editingcontroller~EditingController} #editing\n\t\t */\n\t}\n\n\t/**\n\t * Loads and initializes plugins specified in the config.\n\t *\n\t * @returns {Promise} A promise which resolves once the initialization is completed.\n\t */\n\tinitPlugins() {\n\t\tconst that = this;\n\t\tconst config = this.config;\n\n\t\treturn loadPlugins()\n\t\t\t.then( ( loadedPlugins ) => {\n\t\t\t\treturn initPlugins( loadedPlugins, 'init' )\n\t\t\t\t\t.then( () => initPlugins( loadedPlugins, 'afterInit' ) );\n\t\t\t} )\n\t\t\t.then( () => this.fire( 'pluginsReady' ) );\n\n\t\tfunction loadPlugins() {\n\t\t\tconst plugins = config.get( 'plugins' ) || [];\n\t\t\tconst removePlugins = config.get( 'removePlugins' ) || [];\n\n\t\t\treturn that.plugins.load( plugins, removePlugins );\n\t\t}\n\n\t\tfunction initPlugins( loadedPlugins, method ) {\n\t\t\treturn loadedPlugins.reduce( ( promise, plugin ) => {\n\t\t\t\treturn promise.then( plugin[ method ].bind( plugin ) );\n\t\t\t}, Promise.resolve() );\n\t\t}\n\t}\n\n\t/**\n\t * Destroys the editor instance, releasing all resources used by it.\n\t *\n\t * @fires module:core/editor/editor~Editor#destroy\n\t * @returns {Promise} A promise that resolves once the editor instance is fully destroyed.\n\t */\n\tdestroy() {\n\t\tthis.fire( 'destroy' );\n\t\tthis.stopListening();\n\n\t\treturn Promise.resolve()\n\t\t\t.then( () => {\n\t\t\t\tthis.document.destroy();\n\t\t\t\tthis.data.destroy();\n\t\t\t} );\n\t}\n\n\t/**\n\t * Executes specified command with given parameter.\n\t *\n\t * @param {String} commandName Name of command to execute.\n\t * @param {*} [commandParam] If set, command will be executed with this parameter.\n\t */\n\texecute( commandName, commandParam ) {\n\t\tlet command = this.commands.get( commandName );\n\n\t\tif ( !command ) {\n\t\t\t/**\n\t\t\t * Specified command has not been added to the editor.\n\t\t\t *\n\t\t\t * @error editor-command-not-found\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'editor-command-not-found: Specified command has not been added to the editor.' );\n\t\t}\n\n\t\tcommand._execute( commandParam );\n\t}\n\n\t/**\n\t * Creates a basic editor instance.\n\t *\n\t * @param {Object} config See {@link module:core/editor/editor~Editor}'s param.\n\t * @returns {Promise} Promise resolved once editor is ready.\n\t * @returns {module:core/editor/editor~Editor} return.editor The editor instance.\n\t */\n\tstatic create( config ) {\n\t\treturn new Promise( ( resolve ) => {\n\t\t\tconst editor = new this( config );\n\n\t\t\tresolve(\n\t\t\t\teditor.initPlugins()\n\t\t\t\t\t.then( () => {\n\t\t\t\t\t\teditor.fire( 'dataReady' );\n\t\t\t\t\t\teditor.fire( 'ready' );\n\t\t\t\t\t} )\n\t\t\t\t\t.then( () => editor )\n\t\t\t);\n\t\t} );\n\t}\n}\n\nmix( Editor, EmitterMixin );\n\n/**\n * Fired after {@link #initPlugins plugins are initialized}.\n *\n * @event pluginsReady\n */\n\n/**\n * Fired when the editor UI is ready. This event won't be fired if the editor has no UI.\n *\n * @event uiReady\n */\n\n/**\n * Fired when the data loaded to the editor is ready. If a specific editor doesn't load\n * any data initially, this event will be fired right before {@link #event:ready}.\n *\n * @event dataReady\n */\n\n/**\n * Fired when {@link #event:pluginsReady plugins}, {@link #event:uiReady UI} and {@link #event:dataReady data} and all additional\n * editor components are ready.\n *\n * @event ready\n */\n\n/**\n * Fired when this editor instance is destroyed. The editor at this point is not usable and this event should be used to\n * perform the clean-up in any plugin.\n *\n * @event destroy\n */\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-core/src/editor/editor.js\n// module id = 288\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module core/editor/standardeditor\n */\n\nimport Editor from './editor';\nimport EditingKeystrokeHandler from '../editingkeystrokehandler';\nimport EditingController from '@ckeditor/ckeditor5-engine/src/controller/editingcontroller';\n\nimport getDataFromElement from '@ckeditor/ckeditor5-utils/src/dom/getdatafromelement';\nimport setDataInElement from '@ckeditor/ckeditor5-utils/src/dom/setdatainelement';\n\n/**\n * Class representing a typical browser-based editor. It handles a single source element and\n * uses {@link module:engine/controller/editingcontroller~EditingController}.\n */\nexport default class StandardEditor extends Editor {\n\t/**\n\t * Creates a new instance of the standard editor.\n\t *\n\t * @param {HTMLElement} element The DOM element that will be the source\n\t * for the created editor.\n\t * @param {Object} config The editor config.\n\t */\n\tconstructor( element, config ) {\n\t\tsuper( config );\n\n\t\t/**\n\t\t * The element on which the editor has been initialized.\n\t\t *\n\t\t * @readonly\n\t\t * @member {HTMLElement}\n\t\t */\n\t\tthis.element = element;\n\n\t\t// Documented in Editor.\n\t\tthis.editing = new EditingController( this.document );\n\n\t\t/**\n\t\t * Instance of the {@link module:core/keystrokehandler~KeystrokeHandler}.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:core/keystrokehandler~KeystrokeHandler}\n\t\t */\n\t\tthis.keystrokes = new EditingKeystrokeHandler( this );\n\n\t\t/**\n\t\t * Editor UI instance.\n\t\t *\n\t\t * This property is set by more specialized editor constructors. However, it's required\n\t\t * for plugins to work (their UI-related part will try to interact with editor UI),\n\t\t * so every editor class which is meant to work with default plugins should set this property.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:core/editor/editorui~EditorUI} #ui\n\t\t */\n\n\t\tthis.keystrokes.listenTo( this.editing.view );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tdestroy() {\n\t\treturn Promise.resolve()\n\t\t\t.then( () => this.keystrokes.destroy() )\n\t\t\t.then( () => this.editing.destroy() )\n\t\t\t.then( super.destroy() );\n\t}\n\n\t/**\n\t * Sets the data in the editor's main root.\n\t *\n\t * @param {*} data The data to load.\n\t */\n\tsetData( data ) {\n\t\tthis.data.set( data );\n\t}\n\n\t/**\n\t * Gets the data from the editor's main root.\n\t */\n\tgetData() {\n\t\treturn this.data.get();\n\t}\n\n\t/**\n\t * Updates the {@link #element editor element}'s content with the data.\n\t */\n\tupdateEditorElement() {\n\t\tsetDataInElement( this.element, this.getData() );\n\t}\n\n\t/**\n\t * Loads the data from the {@link #element editor element} to the main root.\n\t */\n\tloadDataFromEditorElement() {\n\t\tthis.setData( getDataFromElement( this.element ) );\n\t}\n\n\t/**\n\t * Creates a standard editor instance.\n\t *\n\t * @param {HTMLElement} element See {@link module:core/editor/standardeditor~StandardEditor}'s param.\n\t * @param {Object} config See {@link module:core/editor/standardeditor~StandardEditor}'s param.\n\t * @returns {Promise} Promise resolved once editor is ready.\n\t * @returns {module:core/editor/standardeditor~StandardEditor} return.editor The editor instance.\n\t */\n\tstatic create( element, config ) {\n\t\treturn new Promise( ( resolve ) => {\n\t\t\tconst editor = new this( element, config );\n\n\t\t\tresolve(\n\t\t\t\teditor.initPlugins()\n\t\t\t\t\t.then( () => {\n\t\t\t\t\t\teditor.fire( 'dataReady' );\n\t\t\t\t\t\teditor.fire( 'ready' );\n\t\t\t\t\t} )\n\t\t\t\t\t.then( () => editor )\n\t\t\t);\n\t\t} );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-core/src/editor/standardeditor.js\n// module id = 289\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module core/plugincollection\n */\n\nimport Plugin from './plugin';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\nimport log from '@ckeditor/ckeditor5-utils/src/log';\n\n/**\n * Manages a list of CKEditor plugins, including loading, resolving dependencies and initialization.\n */\nexport default class PluginCollection {\n\t/**\n\t * Creates an instance of the PluginCollection class.\n\t * Allows loading and initializing plugins and their dependencies.\n\t *\n\t * @param {module:core/editor/editor~Editor} editor\n\t * @param {Array.<Function>} [availablePlugins] Plugins (constructors) which the collection will be able to use\n\t * when {@link module:core/plugin~PluginCollection#load} is used with plugin names (strings, instead of constructors).\n\t * Usually, the editor will pass its built-in plugins to the collection so they can later be\n\t * used in `config.plugins` or `config.removePlugins` by names.\n\t */\n\tconstructor( editor, availablePlugins = [] ) {\n\t\t/**\n\t\t * @protected\n\t\t * @member {module:core/editor/editor~Editor} module:core/plugin~PluginCollection#_editor\n\t\t */\n\t\tthis._editor = editor;\n\n\t\t/**\n\t\t * Map of plugin constructors which can be retrieved by their names.\n\t\t *\n\t\t * @protected\n\t\t * @member {Map.<String|Function,Function>} module:core/plugin~PluginCollection#_availablePlugins\n\t\t */\n\t\tthis._availablePlugins = new Map();\n\n\t\t/**\n\t\t * @protected\n\t\t * @member {Map} module:core/plugin~PluginCollection#_plugins\n\t\t */\n\t\tthis._plugins = new Map();\n\n\t\tfor ( const PluginConstructor of availablePlugins ) {\n\t\t\tthis._availablePlugins.set( PluginConstructor, PluginConstructor );\n\n\t\t\tif ( PluginConstructor.pluginName ) {\n\t\t\t\tthis._availablePlugins.set( PluginConstructor.pluginName, PluginConstructor );\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Collection iterator. Returns `[ PluginConstructor, pluginInstance ]` pairs.\n\t */\n\t*[ Symbol.iterator ]() {\n\t\tfor ( const entry of this._plugins ) {\n\t\t\tif ( typeof entry[ 0 ] == 'function' ) {\n\t\t\t\tyield entry;\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Gets the plugin instance by its constructor or name.\n\t *\n\t * @param {Function|String} key The plugin constructor or {@link module:core/plugin~Plugin.pluginName name}.\n\t * @returns {module:core/plugin~Plugin}\n\t */\n\tget( key ) {\n\t\treturn this._plugins.get( key );\n\t}\n\n\t/**\n\t * Loads a set of plugins and adds them to the collection.\n\t *\n\t * @param {Array.<Function|String>} plugins An array of {@link module:core/plugin~Plugin plugin constructors}\n\t * or {@link module:core/plugin~Plugin.pluginName plugin names}. The second option (names) work only if\n\t * `availablePlugins` were passed to the {@link #constructor}.\n\t * @param {Array.<String|Function>} [removePlugins] Names of plugins or plugin constructors\n\t * which should not be loaded (despite being specified in the `plugins` array).\n\t * @returns {Promise} A promise which gets resolved once all plugins are loaded and available into the\n\t * collection.\n\t * @returns {Promise.<Array.<module:core/plugin~Plugin>>} returns.loadedPlugins The array of loaded plugins.\n\t */\n\tload( plugins, removePlugins = [] ) {\n\t\tconst that = this;\n\t\tconst editor = this._editor;\n\t\tconst loading = new Set();\n\t\tconst loaded = [];\n\n\t\tconst pluginConstructors = mapToAvailableConstructors( plugins );\n\t\tconst removePluginConstructors = mapToAvailableConstructors( removePlugins );\n\t\tconst missingPlugins = getMissingPluginNames( plugins );\n\n\t\tif ( missingPlugins ) {\n\t\t\t// TODO update this error docs with links to docs because it will be a frequent problem.\n\n\t\t\t/**\n\t\t\t * Some plugins are not available and could not be loaded.\n\t\t\t *\n\t\t\t * Plugin classes (constructors) need to be provided to the editor before they can be loaded by name.\n\t\t\t * This is usually done by the builder by setting the {@link module:core/editor/editor~Editor.build}\n\t\t\t * property.\n\t\t\t *\n\t\t\t * @error plugincollection-plugin-not-found\n\t\t\t * @param {Array.<String>} plugins The name of the plugins which could not be loaded.\n\t\t\t */\n\t\t\tconst errorMsg = 'plugincollection-plugin-not-found: Some plugins are not available and could not be loaded.';\n\n\t\t\t// Log the error so it's more visible on the console. Hopefuly, for better DX.\n\t\t\tlog.error( errorMsg, { plugins: missingPlugins } );\n\n\t\t\treturn Promise.reject( new CKEditorError( errorMsg, { plugins: missingPlugins } ) );\n\t\t}\n\n\t\treturn Promise.all( pluginConstructors.map( loadPlugin ) )\n\t\t\t.then( () => loaded );\n\n\t\tfunction loadPlugin( PluginConstructor ) {\n\t\t\tif ( removePluginConstructors.includes( PluginConstructor ) ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// The plugin is already loaded or being loaded - do nothing.\n\t\t\tif ( that.get( PluginConstructor ) || loading.has( PluginConstructor ) ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\treturn instantiatePlugin( PluginConstructor )\n\t\t\t\t.catch( ( err ) => {\n\t\t\t\t\t/**\n\t\t\t\t\t * It was not possible to load the plugin.\n\t\t\t\t\t *\n\t\t\t\t\t * @error plugincollection-load\n\t\t\t\t\t * @param {String} plugin The name of the plugin that could not be loaded.\n\t\t\t\t\t */\n\t\t\t\t\tlog.error( 'plugincollection-load: It was not possible to load the plugin.', { plugin: PluginConstructor } );\n\n\t\t\t\t\tthrow err;\n\t\t\t\t} );\n\t\t}\n\n\t\tfunction instantiatePlugin( PluginConstructor ) {\n\t\t\treturn new Promise( ( resolve ) => {\n\t\t\t\tloading.add( PluginConstructor );\n\n\t\t\t\tassertIsPlugin( PluginConstructor );\n\n\t\t\t\tif ( PluginConstructor.requires ) {\n\t\t\t\t\tPluginConstructor.requires.forEach( ( RequiredPluginConstructorOrName ) => {\n\t\t\t\t\t\tconst RequiredPluginConstructor = getPluginConstructor( RequiredPluginConstructorOrName );\n\n\t\t\t\t\t\tif ( removePlugins.includes( RequiredPluginConstructor ) ) {\n\t\t\t\t\t\t\t/**\n\t\t\t\t\t\t\t * Cannot load a plugin because one of its dependencies is listed in the `removePlugins` option.\n\t\t\t\t\t\t\t *\n\t\t\t\t\t\t\t * @error plugincollection-required\n\t\t\t\t\t\t\t * @param {Function} plugin The required plugin.\n\t\t\t\t\t\t\t * @param {Function} requiredBy The parent plugin.\n\t\t\t\t\t\t\t */\n\t\t\t\t\t\t\tthrow new CKEditorError(\n\t\t\t\t\t\t\t\t'plugincollection-required: Cannot load a plugin because one of its dependencies is listed in' +\n\t\t\t\t\t\t\t\t'the `removePlugins` option.',\n\t\t\t\t\t\t\t\t{ plugin: RequiredPluginConstructor, requiredBy: PluginConstructor }\n\t\t\t\t\t\t\t);\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\tloadPlugin( RequiredPluginConstructor );\n\t\t\t\t\t} );\n\t\t\t\t}\n\n\t\t\t\tconst plugin = new PluginConstructor( editor );\n\t\t\t\tthat._add( PluginConstructor, plugin );\n\t\t\t\tloaded.push( plugin );\n\n\t\t\t\tresolve();\n\t\t\t} );\n\t\t}\n\n\t\tfunction getPluginConstructor( PluginConstructorOrName ) {\n\t\t\tif ( typeof PluginConstructorOrName == 'function' ) {\n\t\t\t\treturn PluginConstructorOrName;\n\t\t\t}\n\n\t\t\treturn that._availablePlugins.get( PluginConstructorOrName );\n\t\t}\n\n\t\tfunction assertIsPlugin( PluginConstructor ) {\n\t\t\tif ( !( PluginConstructor.prototype instanceof Plugin ) ) {\n\t\t\t\t/**\n\t\t\t\t * The loaded plugin module is not an instance of {@link module:core/plugin~Plugin}.\n\t\t\t\t *\n\t\t\t\t * @error plugincollection-instance\n\t\t\t\t * @param {*} plugin The constructor which is meant to be loaded as a plugin.\n\t\t\t\t */\n\t\t\t\tthrow new CKEditorError(\n\t\t\t\t\t'plugincollection-instance: The loaded plugin module is not an instance of Plugin.',\n\t\t\t\t\t{ plugin: PluginConstructor }\n\t\t\t\t);\n\t\t\t}\n\t\t}\n\n\t\tfunction getMissingPluginNames( plugins ) {\n\t\t\tconst missingPlugins = [];\n\n\t\t\tfor ( const pluginNameOrConstructor of plugins ) {\n\t\t\t\tif ( !getPluginConstructor( pluginNameOrConstructor ) ) {\n\t\t\t\t\tmissingPlugins.push( pluginNameOrConstructor );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn missingPlugins.length ? missingPlugins : null;\n\t\t}\n\n\t\tfunction mapToAvailableConstructors( plugins ) {\n\t\t\treturn plugins\n\t\t\t\t.map( pluginNameOrConstructor => getPluginConstructor( pluginNameOrConstructor ) )\n\t\t\t\t.filter( PluginConstructor => !!PluginConstructor );\n\t\t}\n\t}\n\n\t/**\n\t * Adds the plugin to the collection. Exposed mainly for testing purposes.\n\t *\n\t * @protected\n\t * @param {Function} PluginConstructor The plugin constructor.\n\t * @param {module:core/plugin~Plugin} plugin The instance of the plugin.\n\t */\n\t_add( PluginConstructor, plugin ) {\n\t\tthis._plugins.set( PluginConstructor, plugin );\n\n\t\tif ( PluginConstructor.pluginName ) {\n\t\t\tthis._plugins.set( PluginConstructor.pluginName, plugin );\n\t\t}\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-core/src/plugincollection.js\n// module id = 290\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module editor-classic/classic\n */\n\nimport StandardEditor from '@ckeditor/ckeditor5-core/src/editor/standardeditor';\nimport HtmlDataProcessor from '@ckeditor/ckeditor5-engine/src/dataprocessor/htmldataprocessor';\nimport ClassicEditorUI from './classiceditorui';\nimport ClassicEditorUIView from './classiceditoruiview';\nimport ElementReplacer from '@ckeditor/ckeditor5-utils/src/elementreplacer';\n\nimport '../theme/theme.scss';\n\n/**\n * Classic editor. Uses inline editable and sticky toolbar, all\n * enclosed in a boxed UI.\n *\n * @extends module:core/editor/standardeditor~StandardEditor\n */\nexport default class ClassicEditor extends StandardEditor {\n\t/**\n\t * Creates an instance of the classic editor.\n\t *\n\t * @param {HTMLElement} element The DOM element that will be the source for the created editor.\n\t * The data will be loaded from it and loaded back to it once the editor is destroyed.\n\t * @param {Object} config The editor configuration.\n\t */\n\tconstructor( element, config ) {\n\t\tsuper( element, config );\n\n\t\tthis.document.createRoot();\n\t\tthis.data.processor = new HtmlDataProcessor();\n\t\tthis.ui = new ClassicEditorUI( this, new ClassicEditorUIView( this.locale ) );\n\n\t\t/**\n\t\t * The element replacer instance used to hide the editor element.\n\t\t *\n\t\t * @protected\n\t\t * @member {module:utils/elementreplacer~ElementReplacer}\n\t\t */\n\t\tthis._elementReplacer = new ElementReplacer();\n\t}\n\n\t/**\n\t * Destroys the editor instance, releasing all resources used by it.\n\t *\n\t * Updates the original editor element with the data.\n\t *\n\t * @returns {Promise}\n\t */\n\tdestroy() {\n\t\tthis.updateEditorElement();\n\t\tthis._elementReplacer.restore();\n\n\t\treturn this.ui.destroy()\n\t\t\t.then( () => super.destroy() );\n\t}\n\n\t/**\n\t * Creates a classic editor instance.\n\t *\n\t *\t\tClassicEditor.create( document.querySelector( '#editor' ), {\n\t *\t\t\tplugins: [ Delete, Enter, Typing, Paragraph, Undo, Bold, Italic ],\n\t *\t\t\ttoolbar: [ 'bold', 'italic', 'undo', 'redo' ]\n\t *\t\t} )\n\t *\t\t.then( editor => {\n\t *\t\t\tconsole.log( 'Editor was initialized', editor );\n\t *\t\t} )\n\t *\t\t.catch( err => {\n\t *\t\t\tconsole.error( err.stack );\n\t *\t\t} );\n\t *\n\t * @param {HTMLElement} element See {@link module:editor-classic/classic~ClassicEditor#constructor}'s parameters.\n\t * @param {Object} config See {@link module:editor-classic/classic~ClassicEditor#constructor}'s parameters.\n\t * @returns {Promise} A promise resolved once the editor is ready.\n\t * @returns {module:core/editor/standardeditor~StandardEditor} return.editor The editor instance.\n\t */\n\tstatic create( element, config ) {\n\t\treturn new Promise( ( resolve ) => {\n\t\t\tconst editor = new this( element, config );\n\n\t\t\tresolve(\n\t\t\t\teditor.initPlugins()\n\t\t\t\t\t.then( () => editor._elementReplacer.replace( element, editor.ui.view.element ) )\n\t\t\t\t\t.then( () => editor.ui.init() )\n\t\t\t\t\t.then( () => editor.fire( 'uiReady' ) )\n\t\t\t\t\t.then( () => editor.editing.view.attachDomRoot( editor.ui.view.editableElement ) )\n\t\t\t\t\t.then( () => editor.loadDataFromEditorElement() )\n\t\t\t\t\t.then( () => {\n\t\t\t\t\t\teditor.fire( 'dataReady' );\n\t\t\t\t\t\teditor.fire( 'ready' );\n\t\t\t\t\t} )\n\t\t\t\t\t.then( () => editor )\n\t\t\t);\n\t\t} );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-editor-classic/src/classic.js\n// module id = 291\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module editor-classic/classiceditorui\n */\n\nimport ComponentFactory from '@ckeditor/ckeditor5-ui/src/componentfactory';\nimport FocusTracker from '@ckeditor/ckeditor5-utils/src/focustracker';\nimport enableToolbarKeyboardFocus from '@ckeditor/ckeditor5-ui/src/toolbar/enabletoolbarkeyboardfocus';\n\n/**\n * The classic editor UI class.\n *\n * @implements module:core/editor/editorui~EditorUI\n */\nexport default class ClassicEditorUI {\n\t/**\n\t * Creates an instance of the editor UI class.\n\t *\n\t * @param {module:core/editor/editor~Editor} editor The editor instance.\n\t * @param {module:ui/editorui/editoruiview~EditorUIView} view View of the ui.\n\t */\n\tconstructor( editor, view ) {\n\t\t/**\n\t\t * @inheritDoc\n\t\t */\n\t\tthis.editor = editor;\n\n\t\t/**\n\t\t * @inheritDoc\n\t\t */\n\t\tthis.view = view;\n\n\t\t/**\n\t\t * @inheritDoc\n\t\t */\n\t\tthis.componentFactory = new ComponentFactory( editor );\n\n\t\t/**\n\t\t * @inheritDoc\n\t\t */\n\t\tthis.focusTracker = new FocusTracker();\n\n\t\t// Set–up the view.\n\t\tview.set( 'width', editor.config.get( 'ui.width' ) );\n\t\tview.set( 'height', editor.config.get( 'ui.height' ) );\n\n\t\t// Set–up the toolbar.\n\t\tview.toolbar.bind( 'isActive' ).to( this.focusTracker, 'isFocused' );\n\t\tview.toolbar.limiterElement = view.element;\n\n\t\t// Setup the editable.\n\t\tconst editingRoot = editor.editing.createRoot( 'div' );\n\t\tview.editable.bind( 'isReadOnly' ).to( editingRoot );\n\t\tview.editable.bind( 'isFocused' ).to( editor.editing.view );\n\t\tview.editable.name = editingRoot.rootName;\n\t\tthis.focusTracker.add( view.editableElement );\n\t}\n\n\t/**\n\t * Initializes the UI.\n\t *\n\t * @returns {Promise} A Promise resolved when the initialization process is finished.\n\t */\n\tinit() {\n\t\tconst editor = this.editor;\n\n\t\treturn this.view.init()\n\t\t\t.then( () => {\n\t\t\t\treturn this.view.toolbar.fillFromConfig( editor.config.get( 'toolbar' ), this.componentFactory );\n\t\t\t} )\n\t\t\t.then( () => {\n\t\t\t\tenableToolbarKeyboardFocus( {\n\t\t\t\t\torigin: editor.editing.view,\n\t\t\t\t\toriginFocusTracker: this.focusTracker,\n\t\t\t\t\toriginKeystrokeHandler: editor.keystrokes,\n\t\t\t\t\ttoolbar: this.view.toolbar\n\t\t\t\t} );\n\t\t\t} );\n\t}\n\n\t/**\n\t * Destroys the UI.\n\t *\n\t * @returns {Promise} A Promise resolved when the destruction process is finished.\n\t */\n\tdestroy() {\n\t\treturn this.view.destroy();\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-editor-classic/src/classiceditorui.js\n// module id = 292\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module editor-classic/classiceditoruiview\n */\n\nimport BoxedEditorUIView from '@ckeditor/ckeditor5-ui/src/editorui/boxed/boxededitoruiview';\nimport InlineEditableUIView from '@ckeditor/ckeditor5-ui/src/editableui/inline/inlineeditableuiview';\nimport StickyToolbarView from '@ckeditor/ckeditor5-ui/src/toolbar/sticky/stickytoolbarview';\n\n/**\n * Classic editor UI view. Uses inline editable and sticky toolbar, all\n * enclosed in a boxed UI view.\n *\n * @extends module:ui/editorui/boxed/boxededitoruiview~BoxedEditorUIView\n */\nexport default class ClassicEditorUIView extends BoxedEditorUIView {\n\t/**\n\t * Creates an instance of the classic editor UI view.\n\t *\n\t * @param {module:utils/locale~Locale} locale The {@link module:core/editor/editor~Editor#locale} instance.\n\t */\n\tconstructor( locale ) {\n\t\tsuper( locale );\n\n\t\t/**\n\t\t * A sticky toolbar view instance.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:ui/toolbar/sticky/stickytoolbarview~StickyToolbarView}\n\t\t */\n\t\tthis.toolbar = new StickyToolbarView( locale );\n\n\t\t/**\n\t\t * Editable UI view.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:ui/editableui/inline/inlineeditableuiview~InlineEditableUIView}\n\t\t */\n\t\tthis.editable = new InlineEditableUIView( locale );\n\n\t\tthis.top.add( this.toolbar );\n\t\tthis.main.add( this.editable );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tget editableElement() {\n\t\treturn this.editable.element;\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-editor-classic/src/classiceditoruiview.js\n// module id = 293\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/controller/datacontroller\n */\n\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\nimport EmitterMixin from '@ckeditor/ckeditor5-utils/src/emittermixin';\n\nimport Mapper from '../conversion/mapper';\n\nimport ModelConversionDispatcher from '../conversion/modelconversiondispatcher';\nimport { insertText } from '../conversion/model-to-view-converters';\n\nimport ViewConversionDispatcher from '../conversion/viewconversiondispatcher';\nimport { convertText, convertToModelFragment } from '../conversion/view-to-model-converters';\n\nimport ViewDocumentFragment from '../view/documentfragment';\n\nimport ModelRange from '../model/range';\nimport ModelPosition from '../model/position';\n\nimport insertContent from './insertcontent';\nimport deleteContent from './deletecontent';\nimport modifySelection from './modifyselection';\nimport getSelectedContent from './getselectedcontent';\n\n/**\n * Controller for the data pipeline. The data pipeline controls how data is retrieved from the document\n * and set inside it. Hence, the controller features two methods which allow to {@link ~DataController#get get}\n * and {@link ~DataController#set set} data of the {@link ~DataController#model model}\n * using given:\n *\n * * {@link module:engine/dataprocessor/dataprocessor~DataProcessor data processor},\n * * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher model to view} and\n * * {@link module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher view to model} converters.\n *\n * @mixes module:utils/emittermixin~EmitterMixin\n */\nexport default class DataController {\n\t/**\n\t * Creates data controller instance.\n\t *\n\t * @param {module:engine/model/document~Document} model Document model.\n\t * @param {module:engine/dataprocessor/dataprocessor~DataProcessor} [dataProcessor] Data processor which should used by the controller.\n\t */\n\tconstructor( model, dataProcessor ) {\n\t\t/**\n\t\t * Document model.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/model/document~Document}\n\t\t */\n\t\tthis.model = model;\n\n\t\t/**\n\t\t * Data processor used during the conversion.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/dataProcessor~DataProcessor}\n\t\t */\n\t\tthis.processor = dataProcessor;\n\n\t\t/**\n\t\t * Mapper used for the conversion. It has no permanent bindings, because they are created when getting data and\n\t\t * cleared directly after data are converted. However, the mapper is defined as class property, because\n\t\t * it needs to be passed to the `ModelConversionDispatcher` as a conversion API.\n\t\t *\n\t\t * @member {module:engine/conversion/mapper~Mapper}\n\t\t */\n\t\tthis.mapper = new Mapper();\n\n\t\t/**\n\t\t * Model to view conversion dispatcher used by the {@link #get get method}.\n\t\t * To attach model to view converter to the data pipeline you need to add lister to this property:\n\t\t *\n\t\t *\t\tdata.modelToView( 'insert:$element', customInsertConverter );\n\t\t *\n\t\t * Or use {@link module:engine/conversion/buildmodelconverter~ModelConverterBuilder}:\n\t\t *\n\t\t *\t\tbuildModelConverter().for( data.modelToView ).fromAttribute( 'bold' ).toElement( 'b' );\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher}\n\t\t */\n\t\tthis.modelToView = new ModelConversionDispatcher( this.model, {\n\t\t\tmapper: this.mapper\n\t\t} );\n\t\tthis.modelToView.on( 'insert:$text', insertText(), { priority: 'lowest' } );\n\n\t\t/**\n\t\t * View to model conversion dispatcher used by the {@link #set set method}.\n\t\t * To attach view to model converter to the data pipeline you need to add lister to this property:\n\t\t *\n\t\t *\t\tdata.viewToModel( 'element', customElementConverter );\n\t\t *\n\t\t * Or use {@link module:engine/conversion/buildviewconverter~ViewConverterBuilder}:\n\t\t *\n\t\t *\t\tbuildViewConverter().for( data.viewToModel ).fromElement( 'b' ).toAttribute( 'bold', 'true' );\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher}\n\t\t */\n\t\tthis.viewToModel = new ViewConversionDispatcher( {\n\t\t\tschema: model.schema\n\t\t} );\n\n\t\t// Define default converters for text and elements.\n\t\t//\n\t\t// Note that if there is no default converter for the element it will be skipped, for instance `<b>foo</b>` will be\n\t\t// converted to nothing. We add `convertToModelFragment` as a last converter so it converts children of that\n\t\t// element to the document fragment so `<b>foo</b>` will be converted to `foo` if there is no converter for `<b>`.\n\t\tthis.viewToModel.on( 'text', convertText(), { priority: 'lowest' } );\n\t\tthis.viewToModel.on( 'element', convertToModelFragment(), { priority: 'lowest' } );\n\t\tthis.viewToModel.on( 'documentFragment', convertToModelFragment(), { priority: 'lowest' } );\n\n\t\tthis.on( 'insertContent', ( evt, data ) => insertContent( this, data.content, data.selection, data.batch ) );\n\t\tthis.on( 'deleteContent', ( evt, data ) => deleteContent( data.selection, data.batch, data.options ) );\n\t\tthis.on( 'modifySelection', ( evt, data ) => modifySelection( this, data.selection, data.options ) );\n\t\tthis.on( 'getSelectedContent', ( evt, data ) => {\n\t\t\tdata.content = getSelectedContent( data.selection );\n\t\t} );\n\t}\n\n\t/**\n\t * Returns model's data converted by the {@link #modelToView model to view converters} and\n\t * formatted by the {@link #processor data processor}.\n\t *\n\t * @param {String} [rootName='main'] Root name.\n\t * @returns {String} Output data.\n\t */\n\tget( rootName = 'main' ) {\n\t\t// Get model range.\n\t\treturn this.stringify( this.model.getRoot( rootName ) );\n\t}\n\n\t/**\n\t * Returns the content of the given {@link module:engine/model/element~Element model's element} or\n\t * {@link module:engine/model/documentfragment~DocumentFragment model document fragment} converted by the\n\t * {@link #modelToView model to view converters} and formatted by the\n\t * {@link #processor data processor}.\n\t *\n\t * @param {module:engine/model/element~Element|module:engine/model/documentfragment~DocumentFragment} modelElementOrFragment\n\t * Element which content will be stringified.\n\t * @returns {String} Output data.\n\t */\n\tstringify( modelElementOrFragment ) {\n\t\t// model -> view\n\t\tconst viewDocumentFragment = this.toView( modelElementOrFragment );\n\n\t\t// view -> data\n\t\treturn this.processor.toData( viewDocumentFragment );\n\t}\n\n\t/**\n\t * Returns the content of the given {@link module:engine/model/element~Element model element} or\n\t * {@link module:engine/model/documentfragment~DocumentFragment model document fragment} converted by the\n\t * {@link #modelToView model to view converters} to a\n\t * {@link module:engine/view/documentfragment~DocumentFragment view document fragment}.\n\t *\n\t * @param {module:engine/model/element~Element|module:engine/model/documentfragment~DocumentFragment} modelElementOrFragment\n\t * Element or document fragment which content will be converted.\n\t * @returns {module:engine/view/documentfragment~DocumentFragment} Output view DocumentFragment.\n\t */\n\ttoView( modelElementOrFragment ) {\n\t\tconst modelRange = ModelRange.createIn( modelElementOrFragment );\n\n\t\tconst viewDocumentFragment = new ViewDocumentFragment();\n\t\tthis.mapper.bindElements( modelElementOrFragment, viewDocumentFragment );\n\n\t\tthis.modelToView.convertInsertion( modelRange );\n\n\t\tthis.mapper.clearBindings();\n\n\t\treturn viewDocumentFragment;\n\t}\n\n\t/**\n\t * Sets input data parsed by the {@link #processor data processor} and\n\t * converted by the {@link #viewToModel view to model converters}.\n\t *\n\t * This method also creates a batch with all the changes applied. If all you need is to parse data use\n\t * the {@link #parse} method.\n\t *\n\t * @param {String} data Input data.\n\t * @param {String} [rootName='main'] Root name.\n\t */\n\tset( data, rootName = 'main' ) {\n\t\t// Save to model.\n\t\tconst modelRoot = this.model.getRoot( rootName );\n\n\t\tthis.model.enqueueChanges( () => {\n\t\t\t// Clearing selection is a workaround for ticket #569 (LiveRange loses position after removing data from document).\n\t\t\t// After fixing it this code should be removed.\n\t\t\tthis.model.selection.removeAllRanges();\n\t\t\tthis.model.selection.clearAttributes();\n\n\t\t\t// Initial batch should be ignored by features like undo, etc.\n\t\t\tthis.model.batch( 'transparent' )\n\t\t\t\t.remove( ModelRange.createIn( modelRoot ) )\n\t\t\t\t.insert( ModelPosition.createAt( modelRoot, 0 ), this.parse( data ) );\n\t\t} );\n\t}\n\n\t/**\n\t * Returns data parsed by the {@link #processor data processor} and then\n\t * converted by the {@link #viewToModel view to model converters}.\n\t *\n\t * @see #set\n\t * @param {String} data Data to parse.\n\t * @param {String} [context='$root'] Base context in which the view will be converted to the model. See:\n\t * {@link module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher#convert}.\n\t * @returns {module:engine/model/documentfragment~DocumentFragment} Parsed data.\n\t */\n\tparse( data, context = '$root' ) {\n\t\t// data -> view\n\t\tconst viewDocumentFragment = this.processor.toView( data );\n\n\t\t// view -> model\n\t\treturn this.toModel( viewDocumentFragment, context );\n\t}\n\n\t/**\n\t * Returns wrapped by {module:engine/model/documentfragment~DocumentFragment} result of the given\n\t * {@link module:engine/view/element~Element view element} or\n\t * {@link module:engine/view/documentfragment~DocumentFragment view document fragment} converted by the\n\t * {@link #viewToModel view to model converters}.\n\t *\n\t * When marker stamps were converted during conversion process then will be set as DocumentFragment\n\t * {@link module:engine/view/documentfragment~DocumentFragment#markers static markers map}.\n\t *\n\t * @param {module:engine/view/element~Element|module:engine/view/documentfragment~DocumentFragment} viewElementOrFragment\n\t * Element or document fragment which content will be converted.\n\t * @param {String} [context='$root'] Base context in which the view will be converted to the model. See:\n\t * {@link module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher#convert}.\n\t * @returns {module:engine/model/documentfragment~DocumentFragment} Output document fragment.\n\t */\n\ttoModel( viewElementOrFragment, context = '$root' ) {\n\t\treturn this.viewToModel.convert( viewElementOrFragment, { context: [ context ] } );\n\t}\n\n\t/**\n\t * Removes all event listeners set by the DataController.\n\t */\n\tdestroy() {}\n\n\t/**\n\t * See {@link module:engine/controller/insertcontent~insertContent}.\n\t *\n\t * @fires insertContent\n\t * @param {module:engine/model/documentfragment~DocumentFragment} content The content to insert.\n\t * @param {module:engine/model/selection~Selection} selection Selection into which the content should be inserted.\n\t * @param {module:engine/model/batch~Batch} [batch] Batch to which deltas will be added. If not specified, then\n\t * changes will be added to a new batch.\n\t */\n\tinsertContent( content, selection, batch ) {\n\t\tthis.fire( 'insertContent', { content, selection, batch } );\n\t}\n\n\t/**\n\t * See {@link module:engine/controller/deletecontent~deleteContent}.\n\t *\n\t * Note: For the sake of predictability, the resulting selection should always be collapsed.\n\t * In cases where a feature wants to modify deleting behavior so selection isn't collapsed\n\t * (e.g. a table feature may want to keep row selection after pressing <kbd>Backspace</kbd>),\n\t * then that behavior should be implemented in the view's listener. At the same time, the table feature\n\t * will need to modify this method's behavior too, e.g. to \"delete contents and then collapse\n\t * the selection inside the last selected cell\" or \"delete the row and collapse selection somewhere near\".\n\t * That needs to be done in order to ensure that other features which use `deleteContent()` will work well with tables.\n\t *\n\t * @fires deleteContent\n\t * @param {module:engine/model/selection~Selection} selection Selection of which the content should be deleted.\n\t * @param {module:engine/model/batch~Batch} batch Batch to which deltas will be added.\n\t * @param {Object} options See {@link module:engine/controller/deletecontent~deleteContent}'s options.\n\t */\n\tdeleteContent( selection, batch, options ) {\n\t\tthis.fire( 'deleteContent', { batch, selection, options } );\n\t}\n\n\t/**\n\t * See {@link module:engine/controller/modifyselection~modifySelection}.\n\t *\n\t * @fires modifySelection\n\t * @param {module:engine/model/selection~Selection} selection The selection to modify.\n\t * @param {Object} options See {@link module:engine/controller/modifyselection~modifySelection}'s options.\n\t */\n\tmodifySelection( selection, options ) {\n\t\tthis.fire( 'modifySelection', { selection, options } );\n\t}\n\n\t/**\n\t * See {@link module:engine/controller/getselectedcontent~getSelectedContent}.\n\t *\n\t * @fires module:engine/controller/datacontroller~DataController#getSelectedContent\n\t * @param {module:engine/model/selection~Selection} selection The selection of which content will be retrieved.\n\t * @returns {module:engine/model/documentfragment~DocumentFragment} Document fragment holding the clone of the selected content.\n\t */\n\tgetSelectedContent( selection ) {\n\t\tconst evtData = { selection };\n\n\t\tthis.fire( 'getSelectedContent', evtData );\n\n\t\treturn evtData.content;\n\t}\n}\n\nmix( DataController, EmitterMixin );\n\n/**\n * Event fired when {@link #insertContent} method is called.\n * The {@link #insertContent default action of that method} is implemented as a\n * listener to this event so it can be fully customized by the features.\n *\n * @event insertContent\n * @param {Object} data\n * @param {module:engine/view/documentfragment~DocumentFragment} data.content The content to insert.\n * @param {module:engine/model/selection~Selection} data.selection Selection into which the content should be inserted.\n * @param {module:engine/model/batch~Batch} [data.batch] Batch to which deltas will be added.\n */\n\n/**\n * Event fired when {@link #deleteContent} method is called.\n * The {@link module:engine/controller/deletecontent~deleteContent default action of that method} is implemented as a\n * listener to this event so it can be fully customized by the features.\n *\n * @event deleteContent\n * @param {Object} data\n * @param {module:engine/model/batch~Batch} data.batch\n * @param {module:engine/model/selection~Selection} data.selection\n * @param {Object} data.options See {@link module:engine/controller/deletecontent~deleteContent}'s options.\n */\n\n/**\n * Event fired when {@link #modifySelection} method is called.\n * The {@link module:engine/controller/modifyselection~modifySelection default action of that method} is implemented as a\n * listener to this event so it can be fully customized by the features.\n *\n * @event modifySelection\n * @param {Object} data\n * @param {module:engine/model/selection~Selection} data.selection\n * @param {Object} data.options See {@link module:engine/controller/modifyselection~modifySelection}'s options.\n */\n\n/**\n * Event fired when {@link module:engine/controller/datacontroller~DataController#getSelectedContent} method is called.\n * The {@link module:engine/controller/getselectedcontent~getSelectedContent default action of that method} is implemented as a\n * listener to this event so it can be fully customized by the features.\n *\n * @event module:engine/controller/datacontroller~DataController#getSelectedContent\n * @param {Object} data\n * @param {module:engine/model/selection~Selection} data.selection\n * @param {module:engine/model/documentfragment~DocumentFragment} data.content The document fragment to return\n * (holding a clone of the selected content).\n */\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/controller/datacontroller.js\n// module id = 294\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/controller/deletecontent\n */\n\nimport LivePosition from '../model/liveposition';\nimport Position from '../model/position';\nimport Range from '../model/range';\nimport Element from '../model/element';\n\n/**\n * Deletes content of the selection and merge siblings. The resulting selection is always collapsed.\n *\n * @param {module:engine/model/selection~Selection} selection Selection of which the content should be deleted.\n * @param {module:engine/model/batch~Batch} batch Batch to which the deltas will be added.\n * @param {Object} [options]\n * @param {Boolean} [options.merge=false] Merge elements after removing the contents of the selection.\n * For example, `<h>x[x</h><p>y]y</p>` will become: `<h>x^y</h>` with the option enabled\n * and: `<h>x^</h><p>y</p>` without it.\n * Note: {@link module:engine/model/schema~Schema#objects object} and {@link module:engine/model/schema~Schema#limits limit}\n * elements will not be merged.\n */\nexport default function deleteContent( selection, batch, options = {} ) {\n\tif ( selection.isCollapsed ) {\n\t\treturn;\n\t}\n\n\tconst selRange = selection.getFirstRange();\n\n\tconst startPos = selRange.start;\n\tconst endPos = LivePosition.createFromPosition( selRange.end );\n\n\t// 1. Remove the contents if there are any.\n\tif ( !selRange.start.isTouching( selRange.end ) ) {\n\t\tbatch.remove( selRange );\n\t}\n\n\t// 2. Merge elements in the right branch to the elements in the left branch.\n\t// The only reasonable (in terms of data and selection correctness) case in which we need to do that is:\n\t//\n\t// <heading type=1>Fo[</heading><paragraph>]ar</paragraph> => <heading type=1>Fo^ar</heading>\n\t//\n\t// However, the algorithm supports also merging deeper structures (up to the depth of the shallower branch),\n\t// as it's hard to imagine what should actually be the default behavior. Usually, specific features will\n\t// want to override that behavior anyway.\n\tif ( options.merge ) {\n\t\tmergeBranches( batch, startPos, endPos );\n\t}\n\n\tselection.collapse( startPos );\n\n\t// 3. Autoparagraphing.\n\t// Check if a text is allowed in the new container. If not, try to create a new paragraph (if it's allowed here).\n\tif ( shouldAutoparagraph( batch.document, startPos ) ) {\n\t\tconst paragraph = new Element( 'paragraph' );\n\t\tbatch.insert( startPos, paragraph );\n\n\t\tselection.collapse( paragraph );\n\t}\n\n\tendPos.detach();\n}\n\n// This function is a result of reaching the Ballmer's peak for just the right amount of time.\n// Even I had troubles documenting it after a while and after reading it again I couldn't believe that it really works.\nfunction mergeBranches( batch, startPos, endPos ) {\n\tconst startParent = startPos.parent;\n\tconst endParent = endPos.parent;\n\n\t// If both positions ended up in the same parent, then there's nothing more to merge:\n\t// <$root><p>x[]</p><p>{}y</p></$root> => <$root><p>xy</p>[]{}</$root>\n\tif ( startParent == endParent ) {\n\t\treturn;\n\t}\n\n\t// If one of the positions is a root, then there's nothing more to merge (at least in the current state of implementation).\n\t// Theoretically in this case we could unwrap the <p>: <$root>x[]<p>{}y</p></$root>, but we don't need to support it yet\n\t// so let's just abort.\n\tif ( !startParent.parent || !endParent.parent ) {\n\t\treturn;\n\t}\n\n\t// Check if operations we'll need to do won't need to cross object or limit boundaries.\n\t// E.g., we can't merge endParent into startParent in this case:\n\t// <limit><startParent>x[]</startParent></limit><endParent>{}</endParent>\n\tif ( !checkCanBeMerged( startPos, endPos ) ) {\n\t\treturn;\n\t}\n\n\t// Remember next positions to merge. For example:\n\t// <a><b>x[]</b></a><c><d>{}y</d></c>\n\t// will become:\n\t// <a><b>xy</b>[]</a><c>{}</c>\n\tstartPos = Position.createAfter( startParent );\n\tendPos = Position.createBefore( endParent );\n\n\tif ( endParent.isEmpty ) {\n\t\tbatch.remove( endParent );\n\t} else {\n\t\t// At the moment, next startPos is also the position to which the endParent\n\t\t// needs to be moved:\n\t\t// <a><b>x[]</b></a><c><d>{}y</d></c>\n\t\t// becomes:\n\t\t// <a><b>x</b>[]<d>y</d></a><c>{}</c>\n\n\t\t// Move the end parent only if needed.\n\t\t// E.g. not in this case: <p>ab</p>[]{}<p>cd</p>\n\t\tif ( !endPos.isEqual( startPos ) ) {\n\t\t\tbatch.move( endParent, startPos );\n\t\t}\n\n\t\t// To then become:\n\t\t// <a><b>xy</b>[]</a><c>{}</c>\n\t\tbatch.merge( startPos );\n\t}\n\n\t// Removes empty end ancestors:\n\t// <a>fo[o</a><b><a><c>bar]</c></a></b>\n\t// becomes:\n\t// <a>fo[]</a><b><a>{}</a></b>\n\t// So we can remove <a> and <b>.\n\twhile ( endPos.parent.isEmpty ) {\n\t\tconst parentToRemove = endPos.parent;\n\n\t\tendPos = Position.createBefore( parentToRemove );\n\n\t\tbatch.remove( parentToRemove );\n\t}\n\n\t// Continue merging next level.\n\tmergeBranches( batch, startPos, endPos );\n}\n\nfunction shouldAutoparagraph( doc, position ) {\n\tconst isTextAllowed = doc.schema.check( { name: '$text', inside: position } );\n\tconst isParagraphAllowed = doc.schema.check( { name: 'paragraph', inside: position } );\n\n\treturn !isTextAllowed && isParagraphAllowed;\n}\n\n// Check if parents of two positions can be merged by checking if there are no limit/object\n// boundaries between those two positions.\n//\n// E.g. in <bQ><p>x[]</p></bQ><widget><caption>{}</caption></widget>\n// we'll check <p>, <bQ>, <widget> and <caption>.\n// Usually, widget and caption are marked as objects/limits in the schema, so in this case merging will be blocked.\nfunction checkCanBeMerged( leftPos, rightPos ) {\n\tconst schema = leftPos.root.document.schema;\n\tconst rangeToCheck = new Range( leftPos, rightPos );\n\n\tfor ( const value of rangeToCheck.getWalker() ) {\n\t\tif ( schema.objects.has( value.item.name ) || schema.limits.has( value.item.name ) ) {\n\t\t\treturn false;\n\t\t}\n\t}\n\n\treturn true;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/controller/deletecontent.js\n// module id = 295\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/controller/editingcontroller\n */\n\nimport ViewDocument from '../view/document';\nimport Mapper from '../conversion/mapper';\nimport ModelConversionDispatcher from '../conversion/modelconversiondispatcher';\nimport {\n\tinsertText,\n\tremove\n} from '../conversion/model-to-view-converters';\nimport { convertSelectionChange } from '../conversion/view-selection-to-model-converters';\nimport {\n\tconvertRangeSelection,\n\tconvertCollapsedSelection,\n\tclearAttributes,\n\tclearFakeSelection\n} from '../conversion/model-selection-to-view-converters';\n\nimport EmitterMixin from '@ckeditor/ckeditor5-utils/src/emittermixin';\n\n/**\n * Controller for the editing pipeline. The editing pipeline controls {@link ~EditingController#model model} rendering,\n * including selection handling. It also creates {@link ~EditingController#view view document} which build a\n * browser-independent virtualization over the DOM elements. Editing controller also attach default converters.\n */\nexport default class EditingController {\n\t/**\n\t * Creates editing controller instance.\n\t *\n\t * @param {module:engine/model/document~Document} model Document model.\n\t */\n\tconstructor( model ) {\n\t\t/**\n\t\t * Document model.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/model/document~Document}\n\t\t */\n\t\tthis.model = model;\n\n\t\t/**\n\t\t * View document.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/view/document~Document}\n\t\t */\n\t\tthis.view = new ViewDocument();\n\n\t\t/**\n\t\t * Mapper which describes model-view binding.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/conversion/mapper~Mapper}\n\t\t */\n\t\tthis.mapper = new Mapper();\n\n\t\t/**\n\t\t * Model to view conversion dispatcher, which converts changes from the model to\n\t\t * {@link #view editing view}.\n\t\t *\n\t\t * To attach model to view converter to the editing pipeline you need to add lister to this property:\n\t\t *\n\t\t *\t\tediting.modelToView( 'insert:$element', customInsertConverter );\n\t\t *\n\t\t * Or use {@link module:engine/conversion/buildmodelconverter~ModelConverterBuilder}:\n\t\t *\n\t\t *\t\tbuildModelConverter().for( editing.modelToView ).fromAttribute( 'bold' ).toElement( 'b' );\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher} #modelToView\n\t\t */\n\t\tthis.modelToView = new ModelConversionDispatcher( this.model, {\n\t\t\tmapper: this.mapper,\n\t\t\tviewSelection: this.view.selection\n\t\t} );\n\n\t\t/**\n\t\t * Property keeping all listenters attached by controller on other objects, so it can\n\t\t * stop listening on {@link #destroy}.\n\t\t *\n\t\t * @private\n\t\t * @member {utils.EmitterMixin} #_listenter\n\t\t */\n\t\tthis._listener = Object.create( EmitterMixin );\n\n\t\t// Convert changes in model to view.\n\t\tthis._listener.listenTo( this.model, 'change', ( evt, type, changes ) => {\n\t\t\tthis.modelToView.convertChange( type, changes );\n\t\t}, { priority: 'low' } );\n\n\t\t// Convert model selection to view.\n\t\tthis._listener.listenTo( this.model, 'changesDone', () => {\n\t\t\tconst selection = this.model.selection;\n\n\t\t\tthis.modelToView.convertSelection( selection );\n\t\t\tthis.view.render();\n\t\t}, { priority: 'low' } );\n\n\t\t// Convert model markers changes.\n\t\tthis._listener.listenTo( this.model.markers, 'add', ( evt, marker ) => {\n\t\t\tthis.modelToView.convertMarker( 'addMarker', marker.name, marker.getRange() );\n\t\t} );\n\n\t\tthis._listener.listenTo( this.model.markers, 'remove', ( evt, marker ) => {\n\t\t\tthis.modelToView.convertMarker( 'removeMarker', marker.name, marker.getRange() );\n\t\t} );\n\n\t\t// Convert view selection to model.\n\t\tthis._listener.listenTo( this.view, 'selectionChange', convertSelectionChange( this.model, this.mapper ) );\n\n\t\t// Attach default content converters.\n\t\tthis.modelToView.on( 'insert:$text', insertText(), { priority: 'lowest' } );\n\t\tthis.modelToView.on( 'remove', remove(), { priority: 'low' } );\n\n\t\t// Attach default selection converters.\n\t\tthis.modelToView.on( 'selection', clearAttributes(), { priority: 'low' } );\n\t\tthis.modelToView.on( 'selection', clearFakeSelection(), { priority: 'low' } );\n\t\tthis.modelToView.on( 'selection', convertRangeSelection(), { priority: 'low' } );\n\t\tthis.modelToView.on( 'selection', convertCollapsedSelection(), { priority: 'low' } );\n\t}\n\n\t/**\n\t * {@link module:engine/view/document~Document#createRoot Creates} a view root\n\t * and {@link module:engine/conversion/mapper~Mapper#bindElements binds}\n\t * the model root with view root and and view root with DOM element:\n\t *\n\t *\t\tediting.createRoot( document.querySelector( div#editor ) );\n\t *\n\t * If the DOM element is not available at the time you want to create a view root, for instance it is iframe body\n\t * element, it is possible to create view element and bind the DOM element later:\n\t *\n\t *\t\tediting.createRoot( 'body' );\n\t *\t\tediting.view.attachDomRoot( iframe.contentDocument.body );\n\t *\n\t * @param {Element|String} domRoot DOM root element or the name of view root element if the DOM element will be\n\t * attached later.\n\t * @param {String} [name='main'] Root name.\n\t * @returns {module:engine/view/containerelement~ContainerElement} View root element.\n\t */\n\tcreateRoot( domRoot, name = 'main' ) {\n\t\tconst viewRoot = this.view.createRoot( domRoot, name );\n\t\tconst modelRoot = this.model.getRoot( name );\n\n\t\tthis.mapper.bindElements( modelRoot, viewRoot );\n\n\t\treturn viewRoot;\n\t}\n\n\t/**\n\t * Removes all event listeners attached to the `EditingController`. Destroys all objects created\n\t * by `EditingController` that need to be destroyed.\n\t */\n\tdestroy() {\n\t\tthis.view.destroy();\n\t\tthis._listener.stopListening();\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/controller/editingcontroller.js\n// module id = 296\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/controller/getselectedcontent\n */\n\nimport DocumentFragment from '../model/documentfragment';\nimport Range from '../model/range';\nimport Position from '../model/position';\nimport Text from '../model/text';\nimport { remove } from '../model/writer';\n\n/**\n * Gets a clone of the selected content.\n *\n * For example, for the following selection:\n *\n *\t\t<p>x</p><quote><p>y</p><h>fir[st</h></quote><p>se]cond</p><p>z</p>\n *\n * It will return a document fragment with such a content:\n *\n *\t\t<quote><h>st</h></quote><p>se</p>\n *\n * @param {module:engine/model/selection~Selection} selection The selection of which content will be returned.\n * @returns {module:engine/model/documentfragment~DocumentFragment}\n */\nexport default function getSelectedContent( selection ) {\n\tconst frag = new DocumentFragment();\n\tconst range = selection.getFirstRange();\n\n\tif ( !range || range.isCollapsed ) {\n\t\treturn frag;\n\t}\n\n\tconst root = range.start.root;\n\tconst commonPath = range.start.getCommonPath( range.end );\n\tconst commonParent = root.getNodeByPath( commonPath );\n\n\t// ## 1st step\n\t//\n\t// First, we'll clone a fragment represented by a minimal flat range\n\t// containing the original range to be cloned.\n\t// E.g. let's consider such a range:\n\t//\n\t// <p>x</p><quote><p>y</p><h>fir[st</h></quote><p>se]cond</p><p>z</p>\n\t//\n\t// A minimal flat range containing this one is:\n\t//\n\t// <p>x</p>[<quote><p>y</p><h>first</h></quote><p>second</p>]<p>z</p>\n\t//\n\t// We can easily clone this structure, preserving e.g. the <quote> element.\n\tlet flatSubtreeRange;\n\n\tif ( range.start.parent == range.end.parent ) {\n\t\t// The original range is flat, so take it.\n\t\tflatSubtreeRange = range;\n\t} else {\n\t\tflatSubtreeRange = Range.createFromParentsAndOffsets(\n\t\t\tcommonParent, range.start.path[ commonPath.length ],\n\t\t\tcommonParent, range.end.path[ commonPath.length ] + 1\n\t\t);\n\t}\n\n\tconst howMany = flatSubtreeRange.end.offset - flatSubtreeRange.start.offset;\n\n\t// Clone the whole contents.\n\tfor ( const item of flatSubtreeRange.getItems( { shallow: true } ) ) {\n\t\tif ( item.is( 'textProxy' ) ) {\n\t\t\tfrag.appendChildren( new Text( item.data, item.getAttributes() ) );\n\t\t} else {\n\t\t\tfrag.appendChildren( item.clone( true ) );\n\t\t}\n\t}\n\n\t// ## 2nd step\n\t//\n\t// If the original range wasn't flat, then we need to remove the excess nodes from the both ends of the cloned fragment.\n\t//\n\t// For example, for the range shown in the 1st step comment, we need to remove these pieces:\n\t//\n\t// <quote>[<p>y</p>]<h>[fir]st</h></quote><p>se[cond]</p>\n\t//\n\t// So this will be the final copied content:\n\t//\n\t// <quote><h>st</h></quote><p>se</p>\n\t//\n\t// In order to do that, we remove content from these two ranges:\n\t//\n\t// [<quote><p>y</p><h>fir]st</h></quote><p>se[cond</p>]\n\tif ( flatSubtreeRange != range ) {\n\t\t// Find the position of the original range in the cloned fragment.\n\t\tconst newRange = range._getTransformedByMove( flatSubtreeRange.start, Position.createAt( frag, 0 ), howMany )[ 0 ];\n\n\t\tconst leftExcessRange = new Range( Position.createAt( frag ), newRange.start );\n\t\tconst rightExcessRange = new Range( newRange.end, Position.createAt( frag, 'end' ) );\n\n\t\tremoveRangeContent( rightExcessRange );\n\t\tremoveRangeContent( leftExcessRange );\n\t}\n\n\treturn frag;\n}\n\n// After https://github.com/ckeditor/ckeditor5-engine/issues/690 is fixed,\n// this function will, most likely, be able to rewritten using getMinimalFlatRanges().\nfunction removeRangeContent( range ) {\n\tconst parentsToCheck = [];\n\n\tArray.from( range.getItems( { direction: 'backward' } ) )\n\t\t// We should better store ranges because text proxies will lose integrity\n\t\t// with the text nodes when we'll start removing content.\n\t\t.map( item => Range.createOn( item ) )\n\t\t// Filter only these items which are fully contained in the passed range.\n\t\t//\n\t\t// E.g. for the following range: [<quote><p>y</p><h>fir]st</h>\n\t\t// the walker will return the entire <h> element, when only the \"fir\" item inside it is fully contained.\n\t\t.filter( itemRange => {\n\t\t\t// We should be able to use Range.containsRange, but https://github.com/ckeditor/ckeditor5-engine/issues/691.\n\t\t\tconst contained =\n\t\t\t\t( itemRange.start.isAfter( range.start ) || itemRange.start.isEqual( range.start ) ) &&\n\t\t\t\t( itemRange.end.isBefore( range.end ) || itemRange.end.isEqual( range.end ) );\n\n\t\t\treturn contained;\n\t\t} )\n\t\t.forEach( itemRange => {\n\t\t\tparentsToCheck.push( itemRange.start.parent );\n\n\t\t\tremove( itemRange );\n\t\t} );\n\n\t// Remove ancestors of the removed items if they turned to be empty now\n\t// (their whole content was contained in the range).\n\tparentsToCheck.forEach( parentToCheck => {\n\t\tlet parent = parentToCheck;\n\n\t\twhile ( parent.parent && parent.isEmpty ) {\n\t\t\tconst removeRange = Range.createOn( parent );\n\n\t\t\tparent = parent.parent;\n\n\t\t\tremove( removeRange );\n\t\t}\n\t} );\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/controller/getselectedcontent.js\n// module id = 297\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/controller/insertcontent\n */\n\nimport Position from '../model/position';\nimport LivePosition from '../model/liveposition';\nimport Element from '../model/element';\nimport Range from '../model/range';\nimport log from '@ckeditor/ckeditor5-utils/src/log';\n\n/**\n * Inserts content into the editor (specified selection) as one would expect the paste\n * functionality to work.\n *\n * **Note:** Use {@link module:engine/controller/datacontroller~DataController#insertContent} instead of this function.\n * This function is only exposed to be reusable in algorithms\n * which change the {@link module:engine/controller/datacontroller~DataController#insertContent}\n * method's behavior.\n *\n * @param {module:engine/controller/datacontroller~DataController} dataController The data controller in context of which the insertion\n * should be performed.\n * @param {module:engine/model/documentfragment~DocumentFragment|module:engine/model/item~Item} content The content to insert.\n * @param {module:engine/model/selection~Selection} selection Selection into which the content should be inserted.\n * @param {module:engine/model/batch~Batch} [batch] Batch to which deltas will be added. If not specified, then\n * changes will be added to a new batch.\n */\nexport default function insertContent( dataController, content, selection, batch ) {\n\tif ( !batch ) {\n\t\tbatch = dataController.model.batch();\n\t}\n\n\tif ( !selection.isCollapsed ) {\n\t\tdataController.deleteContent( selection, batch, {\n\t\t\tmerge: true\n\t\t} );\n\t}\n\n\tconst insertion = new Insertion( dataController, batch, selection.anchor );\n\n\tlet nodesToInsert;\n\n\tif ( content.is( 'documentFragment' ) ) {\n\t\tnodesToInsert = content.getChildren();\n\t} else {\n\t\tnodesToInsert = [ content ];\n\t}\n\n\tinsertion.handleNodes( nodesToInsert, {\n\t\t// The set of children being inserted is the only set in this context\n\t\t// so it's the first and last (it's a hack ;)).\n\t\tisFirst: true,\n\t\tisLast: true\n\t} );\n\n\tconst newRange = insertion.getSelectionRange();\n\n\t/* istanbul ignore else */\n\tif ( newRange ) {\n\t\tselection.setRanges( [ newRange ] );\n\t} else {\n\t\t// We are not testing else because it's a safe check for unpredictable edge cases:\n\t\t// an insertion without proper range to select.\n\n\t\t/**\n\t\t * Cannot determine a proper selection range after insertion.\n\t\t *\n\t\t * @warning insertcontent-no-range\n\t\t */\n\t\tlog.warn( 'insertcontent-no-range: Cannot determine a proper selection range after insertion.' );\n\t}\n}\n\n/**\n * Utility class for performing content insertion.\n *\n * @private\n */\nclass Insertion {\n\tconstructor( dataController, batch, position ) {\n\t\t/**\n\t\t * The data controller in context of which the insertion should be performed.\n\t\t *\n\t\t * @member {module:engine/controller/datacontroller~DataController} #dataController\n\t\t */\n\t\tthis.dataController = dataController;\n\n\t\t/**\n\t\t * Batch to which deltas will be added.\n\t\t *\n\t\t * @member {module:engine/controller/batch~Batch} #batch\n\t\t */\n\t\tthis.batch = batch;\n\n\t\t/**\n\t\t * The position at which (or near which) the next node will be inserted.\n\t\t *\n\t\t * @member {module:engine/model/position~Position} #position\n\t\t */\n\t\tthis.position = position;\n\n\t\t/**\n\t\t * Elements with which the inserted elements can be merged.\n\t\t *\n\t\t *\t\t<p>x^</p><p>y</p> + <p>z</p> (can merge to <p>x</p>)\n\t\t *\t\t<p>x</p><p>^y</p> + <p>z</p> (can merge to <p>y</p>)\n\t\t *\t\t<p>x^y</p> + <p>z</p> (can merge to <p>xy</p> which will be split during the action,\n\t\t *\t\t\t\t\t\t\t\tso both its pieces will be added to this set)\n\t\t *\n\t\t *\n\t\t * @member {Set} #canMergeWith\n\t\t */\n\t\tthis.canMergeWith = new Set( [ this.position.parent ] );\n\n\t\t/**\n\t\t * Schema of the model.\n\t\t *\n\t\t * @member {module:engine/model/schema~Schema} #schema\n\t\t */\n\t\tthis.schema = dataController.model.schema;\n\t}\n\n\t/**\n\t * Handles insertion of a set of nodes.\n\t *\n\t * @param {Iterable.<module:engine/model/node~Node>} nodes Nodes to insert.\n\t * @param {Object} parentContext Context in which parent of these nodes was supposed to be inserted.\n\t * If the parent context is passed it means that the parent element was stripped (was not allowed).\n\t */\n\thandleNodes( nodes, parentContext ) {\n\t\tnodes = Array.from( nodes );\n\n\t\tfor ( let i = 0; i < nodes.length; i++ ) {\n\t\t\tconst node = nodes[ i ];\n\n\t\t\tthis._handleNode( node, {\n\t\t\t\tisFirst: i === 0 && parentContext.isFirst,\n\t\t\t\tisLast: ( i === ( nodes.length - 1 ) ) && parentContext.isLast\n\t\t\t} );\n\t\t}\n\t}\n\n\t/**\n\t * Returns range to be selected after insertion.\n\t * Returns null if there is no valid range to select after insertion.\n\t *\n\t * @returns {module:engine/model/range~Range|null}\n\t */\n\tgetSelectionRange() {\n\t\tif ( this.nodeToSelect ) {\n\t\t\treturn Range.createOn( this.nodeToSelect );\n\t\t}\n\n\t\treturn this.dataController.model.getNearestSelectionRange( this.position );\n\t}\n\n\t/**\n\t * Handles insertion of a single node.\n\t *\n\t * @param {module:engine/model/node~Node} node\n\t * @param {Object} context\n\t * @param {Boolean} context.isFirst Whether the given node is the first one in the content to be inserted.\n\t * @param {Boolean} context.isLast Whether the given node is the last one in the content to be inserted.\n\t */\n\t_handleNode( node, context ) {\n\t\t// Let's handle object in a special way.\n\t\t// * They should never be merged with other elements.\n\t\t// * If they are not allowed in any of the selection ancestors, they could be either autoparagraphed or totally removed.\n\t\tif ( this._checkIsObject( node ) ) {\n\t\t\tthis._handleObject( node, context );\n\n\t\t\treturn;\n\t\t}\n\n\t\t// Try to find a place for the given node.\n\t\t// Split the position.parent's branch up to a point where the node can be inserted.\n\t\t// If it isn't allowed in the whole branch, then of course don't split anything.\n\t\tconst isAllowed = this._checkAndSplitToAllowedPosition( node, context );\n\n\t\tif ( !isAllowed ) {\n\t\t\tthis._handleDisallowedNode( node, context );\n\n\t\t\treturn;\n\t\t}\n\n\t\tthis._insert( node );\n\n\t\t// After the node was inserted we may try to merge it with its siblings.\n\t\t// This should happen only if it was the first and/or last of the nodes (so only with boundary nodes)\n\t\t// and only if the selection was in those elements initially.\n\t\t//\n\t\t// E.g.:\n\t\t// <p>x^</p> + <p>y</p> => <p>x</p><p>y</p> => <p>xy[]</p>\n\t\t// and:\n\t\t// <p>x^y</p> + <p>z</p> => <p>x</p>^<p>y</p> + <p>z</p> => <p>x</p><p>y</p><p>z</p> => <p>xy[]z</p>\n\t\t// but:\n\t\t// <p>x</p><p>^</p><p>z</p> + <p>y</p> => <p>x</p><p>y</p><p>z</p> (no merging)\n\t\t// <p>x</p>[<img>]<p>z</p> + <p>y</p> => <p>x</p><p>y</p><p>z</p> (no merging, note: after running deletetContents\n\t\t//\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t it's exactly the same case as above)\n\t\tthis._mergeSiblingsOf( node, context );\n\t}\n\n\t/**\n\t * @param {module:engine/model/element~Element} node The object element.\n\t * @param {Object} context\n\t */\n\t_handleObject( node, context ) {\n\t\t// Try finding it a place in the tree.\n\t\tif ( this._checkAndSplitToAllowedPosition( node ) ) {\n\t\t\tthis._insert( node );\n\t\t}\n\t\t// Try autoparagraphing.\n\t\telse {\n\t\t\tthis._tryAutoparagraphing( node, context );\n\t\t}\n\t}\n\n\t/**\n\t * @param {module:engine/model/node~Node} node The disallowed node which needs to be handled.\n\t * @param {Object} context\n\t */\n\t_handleDisallowedNode( node, context ) {\n\t\t// Try inserting its children (strip the parent).\n\t\tif ( node.is( 'element' ) ) {\n\t\t\tthis.handleNodes( node.getChildren(), context );\n\t\t}\n\t\t// Try autoparagraphing.\n\t\telse {\n\t\t\tthis._tryAutoparagraphing( node, context );\n\t\t}\n\t}\n\n\t/**\n\t * @param {module:engine/model/node~Node} node The node to insert.\n\t */\n\t_insert( node ) {\n\t\t/* istanbul ignore if */\n\t\tif ( !this._checkIsAllowed( node, [ this.position.parent ] ) ) {\n\t\t\t// Algorithm's correctness check. We should never end up here but it's good to know that we did.\n\t\t\t// Note that it would often be a silent issue if we insert node in a place where it's not allowed.\n\t\t\tlog.error(\n\t\t\t\t'insertcontent-wrong-position: The node cannot be inserted on the given position.',\n\t\t\t\t{ node, position: this.position }\n\t\t\t);\n\n\t\t\treturn;\n\t\t}\n\n\t\tconst livePos = LivePosition.createFromPosition( this.position );\n\n\t\tthis.batch.insert( this.position, node );\n\n\t\tthis.position = Position.createFromPosition( livePos );\n\t\tlivePos.detach();\n\n\t\t// The last inserted object should be selected because we can't put a collapsed selection after it.\n\t\tif ( this._checkIsObject( node ) && !this.schema.check( { name: '$text', inside: [ this.position.parent ] } ) ) {\n\t\t\tthis.nodeToSelect = node;\n\t\t} else {\n\t\t\tthis.nodeToSelect = null;\n\t\t}\n\t}\n\n\t/**\n\t * @param {module:engine/model/node~Node} node The node which could potentially be merged.\n\t * @param {Object} context\n\t */\n\t_mergeSiblingsOf( node, context ) {\n\t\tif ( !( node instanceof Element ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst mergeLeft = context.isFirst && ( node.previousSibling instanceof Element ) && this.canMergeWith.has( node.previousSibling );\n\t\tconst mergeRight = context.isLast && ( node.nextSibling instanceof Element ) && this.canMergeWith.has( node.nextSibling );\n\t\tconst mergePosLeft = LivePosition.createBefore( node );\n\t\tconst mergePosRight = LivePosition.createAfter( node );\n\n\t\tif ( mergeLeft ) {\n\t\t\tconst position = LivePosition.createFromPosition( this.position );\n\n\t\t\tthis.batch.merge( mergePosLeft );\n\n\t\t\tthis.position = Position.createFromPosition( position );\n\t\t\tposition.detach();\n\t\t}\n\n\t\tif ( mergeRight ) {\n\t\t\tlet position;\n\n\t\t\t/* istanbul ignore if */\n\t\t\tif ( !this.position.isEqual( mergePosRight ) ) {\n\t\t\t\t// Algorithm's correctness check. We should never end up here but it's good to know that we did.\n\t\t\t\t// At this point the insertion position should be after the node we'll merge. If it isn't,\n\t\t\t\t// it should need to be secured as in the left merge case.\n\t\t\t\tlog.error( 'insertcontent-wrong-position-on-merge: The insertion position should equal the merge position' );\n\t\t\t}\n\n\t\t\t// Move the position to the previous node, so it isn't moved to the graveyard on merge.\n\t\t\t// <p>x</p>[]<p>y</p> => <p>x[]</p><p>y</p>\n\t\t\tthis.position = Position.createAt( mergePosRight.nodeBefore, 'end' );\n\n\t\t\t// OK:  <p>xx[]</p> + <p>yy</p> => <p>xx[]yy</p> (when sticks to previous)\n\t\t\t// NOK: <p>xx[]</p> + <p>yy</p> => <p>xxyy[]</p> (when sticks to next)\n\t\t\tposition = new LivePosition( this.position.root, this.position.path, 'sticksToPrevious' );\n\n\t\t\tthis.batch.merge( mergePosRight );\n\n\t\t\tthis.position = Position.createFromPosition( position );\n\t\t\tposition.detach();\n\t\t}\n\n\t\tmergePosLeft.detach();\n\t\tmergePosRight.detach();\n\t}\n\n\t/**\n\t * Tries wrapping the node in a new paragraph and inserting it this way.\n\t *\n\t * @param {module:engine/model/node~Node} node The node which needs to be autoparagraphed.\n\t * @param {Object} context\n\t */\n\t_tryAutoparagraphing( node, context ) {\n\t\tconst paragraph = new Element( 'paragraph' );\n\n\t\t// Do not autoparagraph if the paragraph won't be allowed there,\n\t\t// cause that would lead to an infinite loop. The paragraph would be rejected in\n\t\t// the next _handleNode() call and we'd be here again.\n\t\tif ( this._getAllowedIn( paragraph, this.position.parent ) && this._checkIsAllowed( node, [ paragraph ] ) ) {\n\t\t\tparagraph.appendChildren( node );\n\n\t\t\tthis._handleNode( paragraph, context );\n\t\t}\n\t}\n\n\t/**\n\t * @param {module:engine/model/node~Node} node\n\t * @returns {Boolean} Whether an allowed position was found.\n\t * `false` is returned if the node isn't allowed at any position up in the tree, `true` if was.\n\t */\n\t_checkAndSplitToAllowedPosition( node ) {\n\t\tconst allowedIn = this._getAllowedIn( node, this.position.parent );\n\n\t\tif ( !allowedIn ) {\n\t\t\treturn false;\n\t\t}\n\n\t\twhile ( allowedIn != this.position.parent ) {\n\t\t\t// If a parent which we'd need to leave is a limit element, break.\n\t\t\tif ( this.schema.limits.has( this.position.parent.name ) ) {\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\tif ( this.position.isAtStart ) {\n\t\t\t\tconst parent = this.position.parent;\n\t\t\t\tthis.position = Position.createBefore( parent );\n\n\t\t\t\t// Special case – parent is empty (<p>^</p>) so isAtStart == isAtEnd == true.\n\t\t\t\t// We can remove the element after moving selection out of it.\n\t\t\t\tif ( parent.isEmpty ) {\n\t\t\t\t\tthis.batch.remove( parent );\n\t\t\t\t}\n\t\t\t} else if ( this.position.isAtEnd ) {\n\t\t\t\tthis.position = Position.createAfter( this.position.parent );\n\t\t\t} else {\n\t\t\t\tconst tempPos = Position.createAfter( this.position.parent );\n\n\t\t\t\tthis.batch.split( this.position );\n\n\t\t\t\tthis.position = tempPos;\n\n\t\t\t\tthis.canMergeWith.add( this.position.nodeAfter );\n\t\t\t}\n\t\t}\n\n\t\treturn true;\n\t}\n\n\t/**\n\t * Gets the element in which the given node is allowed. It checks the passed element and all its ancestors.\n\t *\n\t * @param {module:engine/model/node~Node} node The node to check.\n\t * @param {module:engine/model/element~Element} element The element in which the node's correctness should be checked.\n\t * @returns {module:engine/model/element~Element|null}\n\t */\n\t_getAllowedIn( node, element ) {\n\t\tif ( this._checkIsAllowed( node, [ element ] ) ) {\n\t\t\treturn element;\n\t\t}\n\n\t\tif ( element.parent ) {\n\t\t\treturn this._getAllowedIn( node, element.parent );\n\t\t}\n\n\t\treturn null;\n\t}\n\n\t/**\n\t * Check whether the given node is allowed in the specified schema path.\n\t *\n\t * @param {module:engine/model/node~Node} node\n\t * @param {module:engine/model/schema~SchemaPath} path\n\t */\n\t_checkIsAllowed( node, path ) {\n\t\treturn this.schema.check( {\n\t\t\tname: this._getNodeSchemaName( node ),\n\t\t\tattributes: Array.from( node.getAttributeKeys() ),\n\t\t\tinside: path\n\t\t} );\n\t}\n\n\t/**\n\t * Checks wether according to the schema this is an object type element.\n\t *\n\t * @param {module:engine/model/node~Node} node The node to check.\n\t */\n\t_checkIsObject( node ) {\n\t\treturn this.schema.objects.has( this._getNodeSchemaName( node ) );\n\t}\n\n\t/**\n\t * Gets a name under which we should check this node in the schema.\n\t *\n\t * @param {module:engine/model/node~Node} node The node.\n\t */\n\t_getNodeSchemaName( node ) {\n\t\tif ( node.is( 'text' ) ) {\n\t\t\treturn '$text';\n\t\t}\n\n\t\treturn node.name;\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/controller/insertcontent.js\n// module id = 298\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/controller/modifyselection\n */\n\nimport Position from '../model/position';\nimport TreeWalker from '../model/treewalker';\nimport Range from '../model/range';\nimport { isInsideSurrogatePair, isInsideCombinedSymbol } from '@ckeditor/ckeditor5-utils/src/unicode';\n\n/**\n * Modifies the selection. Currently, the supported modifications are:\n *\n * * Extending. The selection focus is moved in the specified `options.direction` with a step specified in `options.unit`.\n * Possible values for `unit` are:\n *  * `'character'` (default) - moves selection by one user-perceived character. In most cases this means moving by one\n *  character in `String` sense. However, unicode also defines \"combing marks\". These are special symbols, that combines\n *  with a symbol before it (\"base character\") to create one user-perceived character. For example, `q̣̇` is a normal\n *  letter `q` with two \"combining marks\": upper dot (`Ux0307`) and lower dot (`Ux0323`). For most actions, i.e. extending\n *  selection by one position, it is correct to include both \"base character\" and all of it's \"combining marks\". That is\n *  why `'character'` value is most natural and common method of modifying selection.\n *  * `'codePoint'` - moves selection by one unicode code point. In contrary to, `'character'` unit, this will insert\n *  selection between \"base character\" and \"combining mark\", because \"combining marks\" have their own unicode code points.\n *  However, for technical reasons, unicode code points with values above `UxFFFF` are represented in native `String` by\n *  two characters, called \"surrogate pairs\". Halves of \"surrogate pairs\" have a meaning only when placed next to each other.\n *  For example `𨭎` is represented in `String` by `\\uD862\\uDF4E`. Both `\\uD862` and `\\uDF4E` do not have any meaning\n *  outside the pair (are rendered as ? when alone). Position between them would be incorrect. In this case, selection\n *  extension will include whole \"surrogate pair\".\n *\n * **Note:** if you extend a forward selection in a backward direction you will in fact shrink it.\n *\n * @param {module:engine/controller/datacontroller~DataController} dataController The data controller in context of which\n * the selection modification should be performed.\n * @param {module:engine/model/selection~Selection} selection The selection to modify.\n * @param {Object} [options]\n * @param {'forward'|'backward'} [options.direction='forward'] The direction in which the selection should be modified.\n * @param {'character'|'codePoint'} [options.unit='character'] The unit by which selection should be modified.\n */\nexport default function modifySelection( dataController, selection, options = {} ) {\n\tconst schema = dataController.model.schema;\n\tconst isForward = options.direction != 'backward';\n\tconst unit = options.unit ? options.unit : 'character';\n\n\tconst focus = selection.focus;\n\tconst walker = new TreeWalker( {\n\t\tboundaries: getSearchRange( focus, isForward ),\n\t\tsingleCharacters: true,\n\t\tdirection: isForward ? 'forward' : 'backward'\n\t} );\n\n\tconst data = { walker, schema, isForward, unit };\n\n\tlet next;\n\n\twhile ( ( next = walker.next() ) ) {\n\t\tif ( next.done ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst position = tryExtendingTo( data, next.value );\n\n\t\tif ( position ) {\n\t\t\tselection.setFocus( position );\n\n\t\t\treturn;\n\t\t}\n\t}\n}\n\n// Checks whether the selection can be extended to the the walker's next value (next position).\nfunction tryExtendingTo( data, value ) {\n\t// If found text, we can certainly put the focus in it. Let's just find a correct position\n\t// based on the unit.\n\tif ( value.type == 'text' ) {\n\t\treturn getCorrectPosition( data.walker, data.unit );\n\t}\n\n\t// Entering an element.\n\tif ( value.type == ( data.isForward ? 'elementStart' : 'elementEnd' ) ) {\n\t\t// If it's an object, we can select it now.\n\t\tif ( data.schema.objects.has( value.item.name ) ) {\n\t\t\treturn Position.createAt( value.item, data.isForward ? 'after' : 'before' );\n\t\t}\n\n\t\t// If text allowed on this position, extend to this place.\n\t\tif ( data.schema.check( { name: '$text', inside: value.nextPosition } ) ) {\n\t\t\treturn value.nextPosition;\n\t\t}\n\t}\n\t// Leaving an element.\n\telse {\n\t\t// If leaving a limit element, stop.\n\t\tif ( data.schema.limits.has( value.item.name ) ) {\n\t\t\t// NOTE: Fast-forward the walker until the end.\n\t\t\tdata.walker.skip( () => true );\n\n\t\t\treturn;\n\t\t}\n\n\t\t// If text allowed on this position, extend to this place.\n\t\tif ( data.schema.check( { name: '$text', inside: value.nextPosition } ) ) {\n\t\t\treturn value.nextPosition;\n\t\t}\n\t}\n}\n\n// Finds a correct position by walking in a text node and checking whether selection can be extended to given position\n// or should be extended further.\nfunction getCorrectPosition( walker, unit ) {\n\tconst textNode = walker.position.textNode;\n\n\tif ( textNode ) {\n\t\tconst data = textNode.data;\n\t\tlet offset = walker.position.offset - textNode.startOffset;\n\n\t\twhile ( isInsideSurrogatePair( data, offset ) || ( unit == 'character' && isInsideCombinedSymbol( data, offset ) ) ) {\n\t\t\twalker.next();\n\n\t\t\toffset = walker.position.offset - textNode.startOffset;\n\t\t}\n\t}\n\n\treturn walker.position;\n}\n\nfunction getSearchRange( start, isForward ) {\n\tconst root = start.root;\n\tconst searchEnd = Position.createAt( root, isForward ? 'end' : 0 );\n\n\tif ( isForward ) {\n\t\treturn new Range( start, searchEnd );\n\t} else {\n\t\treturn new Range( searchEnd, start );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/controller/modifyselection.js\n// module id = 299\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/conversion/modelconsumable\n */\n\nimport TextProxy from '../model/textproxy';\n\n/**\n * Manages a list of consumable values for {@link module:engine/model/item~Item model items}.\n *\n * Consumables are various aspects of the model. A model item can be broken down into singular properties that might be\n * taken into consideration when converting that item.\n *\n * `ModelConsumable` is used by {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher} while analyzing changed\n * parts of {@link module:engine/model/document~Document the document}. The added / changed / removed model items are broken down\n * into singular properties (the item itself and it's attributes). All those parts are saved in `ModelConsumable`. Then,\n * during conversion, when given part of model item is converted (i.e. the view element has been inserted into the view,\n * but without attributes), consumable value is removed from `ModelConsumable`.\n *\n * For model items, `ModelConsumable` stores consumable values of one of following types: `insert`, `addAttribute:<attributeKey>`,\n * `changeAttribute:<attributeKey>`, `removeAttribute:<attributeKey>`.\n *\n * In most cases, it is enough to let {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher}\n * gather consumable values, so there is no need to use\n * @link module:engine/conversion/modelconsumable~ModelConsumable#add add method} directly.\n * However, it is important to understand how consumable values can be\n * {@link module:engine/conversion/modelconsumable~ModelConsumable#consume consumed}.\n * See {@link module:engine/conversion/model-selection-to-view-converters default model to view converters} for more information.\n *\n * Keep in mind, that one conversion event may have multiple callbacks (converters) attached to it. Each of those is\n * able to convert one or more parts of the model. However, when one of those callbacks actually converts\n * something, other should not, because they would duplicate the results. Using `ModelConsumable` helps avoiding\n * this situation, because callbacks should only convert those values, which were not yet consumed from `ModelConsumable`.\n *\n * Consuming multiple values in a single callback:\n *\n *\t\t// Converter for custom `image` element that might have a `caption` element inside which changes\n *\t\t// how the image is displayed in the view:\n *\t\t//\n *\t\t// Model:\n *\t\t//\n *\t\t// [image]\n *\t\t//   └─ [caption]\n *\t\t//       └─ foo\n *\t\t//\n *\t\t// View:\n *\t\t//\n *\t\t// <figure>\n *\t\t//   ├─ <img />\n *\t\t//   └─ <caption>\n *\t\t//       └─ foo\n *\t\tmodelConversionDispatcher.on( 'insert:image', ( evt, data, consumable, conversionApi ) => {\n *\t\t\t// First, consume the `image` element.\n *\t\t\tconsumable.consume( data.item, 'insert' );\n *\n *\t\t\t// Just create normal image element for the view.\n *\t\t\t// Maybe it will be \"decorated\" later.\n *\t\t\tconst viewImage = new ViewElement( 'img' );\n *\t\t\tconst insertPosition = conversionApi.mapper.toViewPosition( data.range.start );\n *\n *\t\t\t// Check if the `image` element has children.\n *\t\t\tif ( data.item.childCount > 0 ) {\n *\t\t\t\tconst modelCaption = data.item.getChild( 0 );\n *\n *\t\t\t\t// `modelCaption` insertion change is consumed from consumable values.\n *\t\t\t\t// It will not be converted by other converters, but it's children (probably some text) will be.\n *\t\t\t\t// Through mapping, converters for text will know where to insert contents of `modelCaption`.\n *\t\t\t\tif ( consumable.consume( modelCaption, 'insert' ) ) {\n *\t\t\t\t\tconst viewCaption = new ViewElement( 'figcaption' );\n *\n *\t\t\t\t\tconst viewImageHolder = new ViewElement( 'figure', null, [ viewImage, viewCaption ] );\n *\n *\t\t\t\t\tconversionApi.mapper.bindElements( modelCaption, viewCaption );\n *\t\t\t\t\tconversionApi.mapper.bindElements( data.item, viewImageHolder );\n *\t\t\t\t\tviewWriter.insert( insertPosition, viewImageHolder );\n *\t\t\t\t}\n *\t\t\t} else {\n *\t\t\t\tconversionApi.mapper.bindElements( data.item, viewImage );\n *\t\t\t\tviewWriter.insert( insertPosition, viewImage );\n *\t\t\t}\n *\n *\t\t\tevt.stop();\n *\t\t} );\n */\nexport default class ModelConsumable {\n\t/**\n\t * Creates an empty consumables list.\n\t */\n\tconstructor() {\n\t\t/**\n\t\t * Contains list of consumable values.\n\t\t *\n\t\t * @private\n\t\t * @member {Map} module:engine/conversion/modelconsumable~ModelConsumable#_consumable\n\t\t */\n\t\tthis._consumable = new Map();\n\n\t\t/**\n\t\t * For each {@link module:engine/model/textproxy~TextProxy} added to `ModelConsumable`, this registry holds parent\n\t\t * of that `TextProxy` and start and end indices of that `TextProxy`. This allows identification of `TextProxy`\n\t\t * instances that points to the same part of the model but are different instances. Each distinct `TextProxy`\n\t\t * is given unique `Symbol` which is then registered as consumable. This process is transparent for `ModelConsumable`\n\t\t * API user because whenever `TextProxy` is added, tested, consumed or reverted, internal mechanisms of\n\t\t * `ModelConsumable` translates `TextProxy` to that unique `Symbol`.\n\t\t *\n\t\t * @private\n\t\t * @member {Map} module:engine/conversion/modelconsumable~ModelConsumable#_textProxyRegistry\n\t\t */\n\t\tthis._textProxyRegistry = new Map();\n\t}\n\n\t/**\n\t * Adds a consumable value to the consumables list and links it with given model item.\n\t *\n\t *\t\tmodelConsumable.add( modelElement, 'insert' ); // Add `modelElement` insertion change to consumable values.\n\t *\t\tmodelConsumable.add( modelElement, 'addAttribute:bold' ); // Add `bold` attribute insertion on `modelElement` change.\n\t *\t\tmodelConsumable.add( modelElement, 'removeAttribute:bold' ); // Add `bold` attribute removal on `modelElement` change.\n\t *\t\tmodelConsumable.add( modelSelection, 'selection' ); // Add `modelSelection` to consumable values.\n\t *\t\tmodelConsumable.add( modelSelection, 'selectionAttribute:bold' ); // Add `bold` attribute on `modelSelection` to consumables.\n\t *\t\tmodelConsumable.add( modelRange, 'range' ); // Add `modelRange` to consumable values.\n\t *\n\t * @param {module:engine/model/item~Item|module:engine/model/selection~Selection|module:engine/model/range~Range} item\n\t * Model item, range or selection that has the consumable.\n\t * @param {String} type Consumable type.\n\t */\n\tadd( item, type ) {\n\t\tif ( item instanceof TextProxy ) {\n\t\t\titem = this._getSymbolForTextProxy( item );\n\t\t}\n\n\t\tif ( !this._consumable.has( item ) ) {\n\t\t\tthis._consumable.set( item, new Map() );\n\t\t}\n\n\t\tthis._consumable.get( item ).set( type, true );\n\t}\n\n\t/**\n\t * Removes given consumable value from given model item.\n\t *\n\t *\t\tmodelConsumable.consume( modelElement, 'insert' ); // Remove `modelElement` insertion change from consumable values.\n\t *\t\tmodelConsumable.consume( modelElement, 'addAttribute:bold' ); // Remove `bold` attribute insertion on `modelElement` change.\n\t *\t\tmodelConsumable.consume( modelElement, 'removeAttribute:bold' ); // Remove `bold` attribute removal on `modelElement` change.\n\t *\t\tmodelConsumable.consume( modelSelection, 'selection' ); // Remove `modelSelection` from consumable values.\n\t *\t\tmodelConsumable.consume( modelSelection, 'selectionAttribute:bold' ); // Remove `bold` on `modelSelection` from consumables.\n\t *\t\tmodelConsumable.consume( modelRange, 'range' ); // Remove 'modelRange' from consumable values.\n\t *\n\t * @param {module:engine/model/item~Item|module:engine/model/selection~Selection|module:engine/model/range~Range} item\n\t * Model item, range or selection from which consumable will be consumed.\n\t * @param {String} type Consumable type.\n\t * @returns {Boolean} `true` if consumable value was available and was consumed, `false` otherwise.\n\t */\n\tconsume( item, type ) {\n\t\tif ( item instanceof TextProxy ) {\n\t\t\titem = this._getSymbolForTextProxy( item );\n\t\t}\n\n\t\tif ( this.test( item, type ) ) {\n\t\t\tthis._consumable.get( item ).set( type, false );\n\n\t\t\treturn true;\n\t\t} else {\n\t\t\treturn false;\n\t\t}\n\t}\n\n\t/**\n\t * Tests whether there is a consumable value of given type connected with given model item.\n\t *\n\t *\t\tmodelConsumable.test( modelElement, 'insert' ); // Check for `modelElement` insertion change.\n\t *\t\tmodelConsumable.test( modelElement, 'addAttribute:bold' ); // Check for `bold` attribute insertion on `modelElement` change.\n\t *\t\tmodelConsumable.test( modelElement, 'removeAttribute:bold' ); // Check for `bold` attribute removal on `modelElement` change.\n\t *\t\tmodelConsumable.test( modelSelection, 'selection' ); // Check if `modelSelection` is consumable.\n\t *\t\tmodelConsumable.test( modelSelection, 'selectionAttribute:bold' ); // Check if `bold` on `modelSelection` is consumable.\n\t *\t\tmodelConsumable.test( modelRange, 'range' ); // Check if `modelRange` is consumable.\n\t *\n\t * @param {module:engine/model/item~Item|module:engine/model/selection~Selection|module:engine/model/range~Range} item\n\t * Model item, range or selection to be tested.\n\t * @param {String} type Consumable type.\n\t * @returns {null|Boolean} `null` if such consumable was never added, `false` if the consumable values was\n\t * already consumed or `true` if it was added and not consumed yet.\n\t */\n\ttest( item, type ) {\n\t\tif ( item instanceof TextProxy ) {\n\t\t\titem = this._getSymbolForTextProxy( item );\n\t\t}\n\n\t\tconst itemConsumables = this._consumable.get( item );\n\n\t\tif ( itemConsumables === undefined ) {\n\t\t\treturn null;\n\t\t}\n\n\t\tconst value = itemConsumables.get( type );\n\n\t\tif ( value === undefined ) {\n\t\t\treturn null;\n\t\t}\n\n\t\treturn value;\n\t}\n\n\t/**\n\t * Reverts consuming of consumable value.\n\t *\n\t *\t\tmodelConsumable.revert( modelElement, 'insert' ); // Revert consuming `modelElement` insertion change.\n\t *\t\tmodelConsumable.revert( modelElement, 'addAttribute:bold' ); // Revert consuming `bold` attribute insert from `modelElement`.\n\t *\t\tmodelConsumable.revert( modelElement, 'removeAttribute:bold' ); // Revert consuming `bold` attribute remove from `modelElement`.\n\t *\t\tmodelConsumable.revert( modelSelection, 'selection' ); // Revert consuming `modelSelection`.\n\t *\t\tmodelConsumable.revert( modelSelection, 'selectionAttribute:bold' ); // Revert consuming `bold` from `modelSelection`.\n\t *\t\tmodelConsumable.revert( modelRange, 'range' ); // Revert consuming `modelRange`.\n\t *\n\t * @param {module:engine/model/item~Item|module:engine/model/selection~Selection|module:engine/model/range~Range} item\n\t * Model item, range or selection to be reverted.\n\t * @param {String} type Consumable type.\n\t * @returns {null|Boolean} `true` if consumable has been reversed, `false` otherwise. `null` if the consumable has\n\t * never been added.\n\t */\n\trevert( item, type ) {\n\t\tif ( item instanceof TextProxy ) {\n\t\t\titem = this._getSymbolForTextProxy( item );\n\t\t}\n\n\t\tconst test = this.test( item, type );\n\n\t\tif ( test === false ) {\n\t\t\tthis._consumable.get( item ).set( type, true );\n\n\t\t\treturn true;\n\t\t} else if ( test === true ) {\n\t\t\treturn false;\n\t\t}\n\n\t\treturn null;\n\t}\n\n\t/**\n\t * Gets a unique symbol for passed {@link module:engine/model/textproxy~TextProxy} instance. All `TextProxy` instances that\n\t * have same parent, same start index and same end index will get the same symbol.\n\t *\n\t * Used internally to correctly consume `TextProxy` instances.\n\t *\n\t * @private\n\t * @param {module:engine/model/textproxy~TextProxy} textProxy `TextProxy` instance to get a symbol for.\n\t * @returns {Symbol} Symbol representing all equal instances of `TextProxy`.\n\t */\n\t_getSymbolForTextProxy( textProxy ) {\n\t\tlet symbol = null;\n\n\t\tconst startMap = this._textProxyRegistry.get( textProxy.startOffset );\n\n\t\tif ( startMap ) {\n\t\t\tconst endMap = startMap.get( textProxy.endOffset );\n\n\t\t\tif ( endMap ) {\n\t\t\t\tsymbol = endMap.get( textProxy.parent );\n\t\t\t}\n\t\t}\n\n\t\tif ( !symbol ) {\n\t\t\tsymbol = this._addSymbolForTextProxy( textProxy.startOffset, textProxy.endOffset, textProxy.parent );\n\t\t}\n\n\t\treturn symbol;\n\t}\n\n\t/**\n\t * Adds a symbol for given properties that characterizes a {@link module:engine/model/textproxy~TextProxy} instance.\n\t *\n\t * Used internally to correctly consume `TextProxy` instances.\n\t *\n\t * @private\n\t * @param {Number} startIndex Text proxy start index in it's parent.\n\t * @param {Number} endIndex Text proxy end index in it's parent.\n\t * @param {module:engine/model/element~Element} parent Text proxy parent.\n\t * @returns {Symbol} Symbol generated for given properties.\n\t */\n\t_addSymbolForTextProxy( start, end, parent ) {\n\t\tconst symbol = Symbol();\n\t\tlet startMap, endMap;\n\n\t\tstartMap = this._textProxyRegistry.get( start );\n\n\t\tif ( !startMap ) {\n\t\t\tstartMap = new Map();\n\t\t\tthis._textProxyRegistry.set( start, startMap );\n\t\t}\n\n\t\tendMap = startMap.get( end );\n\n\t\tif ( !endMap ) {\n\t\t\tendMap = new Map();\n\t\t\tstartMap.set( end, endMap );\n\t\t}\n\n\t\tendMap.set( parent, symbol );\n\n\t\treturn symbol;\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/conversion/modelconsumable.js\n// module id = 300\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * Contains {@link module:engine/view/selection~Selection view selection}\n * to {@link module:engine/model/selection~Selection model selection} conversion helpers.\n *\n * @module engine/conversion/view-selection-to-model-converters\n */\n\nimport ModelSelection from '../model/selection';\n\n/**\n * Function factory, creates a callback function which converts a {@link module:engine/view/selection~Selection view selection} taken\n * from the {@link module:engine/view/document~Document#event:selectionChange} event\n * and sets in on the {@link module:engine/model/document~Document#selection model}.\n *\n * **Note**: because there is no view selection change dispatcher nor any other advanced view selection to model\n * conversion mechanism, the callback should be set directly on view document.\n *\n *\t\tview.document.on( 'selectionChange', convertSelectionChange( modelDocument, mapper ) );\n *\n * @param {module:engine/model/document~Document} modelDocument Model document on which selection should be updated.\n * @param {module:engine/conversion/mapper~Mapper} mapper Conversion mapper.\n * @returns {Function} {@link module:engine/view/document~Document#event:selectionChange} callback function.\n */\nexport function convertSelectionChange( modelDocument, mapper ) {\n\treturn ( evt, data ) => {\n\t\tconst viewSelection = data.newSelection;\n\t\tconst modelSelection = new ModelSelection();\n\n\t\tconst ranges = [];\n\n\t\tfor ( let viewRange of viewSelection.getRanges() ) {\n\t\t\tranges.push( mapper.toModelRange( viewRange ) );\n\t\t}\n\n\t\tmodelSelection.setRanges( ranges, viewSelection.isBackward );\n\n\t\tif ( !modelSelection.isEqual( modelDocument.selection ) ) {\n\t\t\tmodelDocument.enqueueChanges( () => {\n\t\t\t\tmodelDocument.selection.setTo( modelSelection );\n\t\t\t} );\n\t\t}\n\t};\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/conversion/view-selection-to-model-converters.js\n// module id = 301\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\nimport ModelDocumentFragment from '../model/documentfragment';\nimport ModelText from '../model/text';\nimport { normalizeNodes } from '../model/writer';\n\n/**\n * Contains {@link module:engine/view/view view} to {@link module:engine/model/model model} converters for\n * {@link module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher}.\n *\n * @module engine/conversion/view-to-model-converters\n */\n\n/**\n * Function factory, creates a converter that converts {@link module:engine/view/documentfragment~DocumentFragment view document fragment}\n * or all children of {@link module:engine/view/element~Element} into\n * {@link module:engine/model/documentfragment~DocumentFragment model document fragment}.\n * This is the \"entry-point\" converter for view to model conversion. This converter starts the conversion of all children\n * of passed view document fragment. Those children {@link module:engine/view/node~Node view nodes} are then handled by other converters.\n *\n * This also a \"default\", last resort converter for all view elements that has not been converted by other converters.\n * When a view element is being converted to the model but it does not have converter specified, that view element\n * will be converted to {@link module:engine/model/documentfragment~DocumentFragment model document fragment} and returned.\n *\n * @returns {Function} Universal converter for view {@link module:engine/view/documentfragment~DocumentFragment fragments} and\n * {@link module:engine/view/element~Element elements} that returns\n * {@link module:engine/model/documentfragment~DocumentFragment model fragment} with children of converted view item.\n */\nexport function convertToModelFragment() {\n\treturn ( evt, data, consumable, conversionApi ) => {\n\t\t// Second argument in `consumable.consume` is discarded for ViewDocumentFragment but is needed for ViewElement.\n\t\tif ( !data.output && consumable.consume( data.input, { name: true } ) ) {\n\t\t\tconst convertedChildren = conversionApi.convertChildren( data.input, consumable, data );\n\n\t\t\tdata.output = new ModelDocumentFragment( normalizeNodes( convertedChildren ) );\n\t\t}\n\t};\n}\n\n/**\n * Function factory, creates a converter that converts {@link module:engine/view/text~Text} to {@link module:engine/model/text~Text}.\n *\n * @returns {Function} {@link module:engine/view/text~Text View text} converter.\n */\nexport function convertText() {\n\treturn ( evt, data, consumable, conversionApi ) => {\n\t\tconst schemaQuery = {\n\t\t\tname: '$text',\n\t\t\tinside: data.context\n\t\t};\n\n\t\tif ( conversionApi.schema.check( schemaQuery ) ) {\n\t\t\tif ( consumable.consume( data.input ) ) {\n\t\t\t\tdata.output = new ModelText( data.input.data );\n\t\t\t}\n\t\t}\n\t};\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/conversion/view-to-model-converters.js\n// module id = 302\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/conversion/viewconsumable\n */\n\nimport isArray from '@ckeditor/ckeditor5-utils/src/lib/lodash/isArray';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/**\n * Class used for handling consumption of view {@link module:engine/view/element~Element elements},\n * {@link module:engine/view/text~Text text nodes} and {@link module:engine/view/documentfragment~DocumentFragment document fragments}.\n * Element's name and its parts (attributes, classes and styles) can be consumed separately. Consuming an element's name\n * does not consume its attributes, classes and styles.\n * To add items for consumption use {@link module:engine/conversion/viewconsumable~ViewConsumable#add add method}.\n * To test items use {@link module:engine/conversion/viewconsumable~ViewConsumable#test test method}.\n * To consume items use {@link module:engine/conversion/viewconsumable~ViewConsumable#consume consume method}.\n * To revert already consumed items use {@link module:engine/conversion/viewconsumable~ViewConsumable#revert revert method}.\n *\n *\t\tviewConsumable.add( element, { name: true } ); // Adds element's name as ready to be consumed.\n *\t\tviewConsumable.add( textNode ); // Adds text node for consumption.\n *\t\tviewConsumable.add( docFragment ); // Adds document fragment for consumption.\n *\t\tviewConsumable.test( element, { name: true }  ); // Tests if element's name can be consumed.\n *\t\tviewConsumable.test( textNode ); // Tests if text node can be consumed.\n *\t\tviewConsumable.test( docFragment ); // Tests if document fragment can be consumed.\n *\t\tviewConsumable.consume( element, { name: true }  ); // Consume element's name.\n *\t\tviewConsumable.consume( textNode ); // Consume text node.\n *\t\tviewConsumable.consume( docFragment ); // Consume document fragment.\n *\t\tviewConsumable.revert( element, { name: true }  ); // Revert already consumed element's name.\n *\t\tviewConsumable.revert( textNode ); // Revert already consumed text node.\n *\t\tviewConsumable.revert( docFragment ); // Revert already consumed document fragment.\n */\nexport default class ViewConsumable {\n\t/**\n\t * Creates new ViewConsumable.\n\t */\n\tconstructor() {\n\t\t/**\n\t\t * Map of consumable elements. If {@link module:engine/view/element~Element element} is used as a key,\n\t\t * {@link module:engine/conversion/viewconsumable~ViewElementConsumables ViewElementConsumables} instance is stored as value.\n\t\t * For {@link module:engine/view/text~Text text nodes} and {@link module:engine/view/documentfragment~DocumentFragment document fragments}\n\t\t * boolean value is stored as value.\n\t\t *\n\t\t * @protected\n\t\t * @member {Map.<module:engine/conversion/viewconsumable~ViewElementConsumables|Boolean>}\n\t\t*/\n\t\tthis._consumables = new Map();\n\t}\n\n\t/**\n\t * Adds {@link module:engine/view/element~Element view element}, {@link module:engine/view/text~Text text node} or\n\t * {@link module:engine/view/documentfragment~DocumentFragment document fragment} as ready to be consumed.\n\t *\n\t *\t\tviewConsumable.add( p, { name: true } ); // Adds element's name to consume.\n\t *\t\tviewConsumable.add( p, { attribute: 'name' } ); // Adds element's attribute.\n\t *\t\tviewConsumable.add( p, { class: 'foobar' } ); // Adds element's class.\n\t *\t\tviewConsumable.add( p, { style: 'color' } ); // Adds element's style\n\t *\t\tviewConsumable.add( p, { attribute: 'name', style: 'color' } ); // Adds attribute and style.\n\t *\t\tviewConsumable.add( p, { class: [ 'baz', 'bar' ] } ); // Multiple consumables can be provided.\n\t *\t\tviewConsumable.add( textNode ); // Adds text node to consume.\n\t *\t\tviewConsumable.add( docFragment ); // Adds document fragment to consume.\n\t *\n\t * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `viewconsumable-invalid-attribute` when `class` or `style`\n\t * attribute is provided - it should be handled separately by providing actual style/class.\n\t *\n\t *\t\tviewConsumable.add( p, { attribute: 'style' } ); // This call will throw an exception.\n\t *\t\tviewConsumable.add( p, { style: 'color' } ); // This is properly handled style.\n\t *\n\t * @param {module:engine/view/element~Element|module:engine/view/text~Text|module:engine/view/documentfragment~DocumentFragment} element\n\t * @param {Object} [consumables] Used only if first parameter is {@link module:engine/view/element~Element view element} instance.\n\t * @param {Boolean} consumables.name If set to true element's name will be included.\n\t * @param {String|Array.<String>} consumables.attribute Attribute name or array of attribute names.\n\t * @param {String|Array.<String>} consumables.class Class name or array of class names.\n\t * @param {String|Array.<String>} consumables.style Style name or array of style names.\n\t */\n\tadd( element, consumables ) {\n\t\tlet elementConsumables;\n\n\t\t// For text nodes and document fragments just mark them as consumable.\n\t\tif ( element.is( 'text' ) || element.is( 'documentFragment' ) ) {\n\t\t\tthis._consumables.set( element, true );\n\n\t\t\treturn;\n\t\t}\n\n\t\t// For elements create new ViewElementConsumables or update already existing one.\n\t\tif ( !this._consumables.has( element ) ) {\n\t\t\telementConsumables = new ViewElementConsumables();\n\t\t\tthis._consumables.set( element, elementConsumables );\n\t\t} else {\n\t\t\telementConsumables = this._consumables.get( element );\n\t\t}\n\n\t\telementConsumables.add( consumables );\n\t}\n\n\t/**\n\t * Tests if {@link module:engine/view/element~Element view element}, {@link module:engine/view/text~Text text node} or\n\t * {@link module:engine/view/documentfragment~DocumentFragment document fragment} can be consumed.\n\t * It returns `true` when all items included in method's call can be consumed. Returns `false` when\n\t * first already consumed item is found and `null` when first non-consumable item is found.\n\t *\n\t *\t\tviewConsumable.test( p, { name: true } ); // Tests element's name.\n\t *\t\tviewConsumable.test( p, { attribute: 'name' } ); // Tests attribute.\n\t *\t\tviewConsumable.test( p, { class: 'foobar' } ); // Tests class.\n\t *\t\tviewConsumable.test( p, { style: 'color' } ); // Tests style.\n\t *\t\tviewConsumable.test( p, { attribute: 'name', style: 'color' } ); // Tests attribute and style.\n\t *\t\tviewConsumable.test( p, { class: [ 'baz', 'bar' ] } ); // Multiple consumables can be tested.\n\t *\t\tviewConsumable.test( textNode ); // Tests text node.\n\t *\t\tviewConsumable.test( docFragment ); // Tests document fragment.\n\t *\n\t * Testing classes and styles as attribute will test if all added classes/styles can be consumed.\n\t *\n\t *\t\tviewConsumable.test( p, { attribute: 'class' } ); // Tests if all added classes can be consumed.\n\t *\t\tviewConsumable.test( p, { attribute: 'style' } ); // Tests if all added styles can be consumed.\n\t *\n\t * @param {module:engine/view/element~Element|module:engine/view/text~Text|module:engine/view/documentfragment~DocumentFragment} element\n\t * @param {Object} [consumables] Used only if first parameter is {@link module:engine/view/element~Element view element} instance.\n\t * @param {Boolean} consumables.name If set to true element's name will be included.\n\t * @param {String|Array.<String>} consumables.attribute Attribute name or array of attribute names.\n\t * @param {String|Array.<String>} consumables.class Class name or array of class names.\n\t * @param {String|Array.<String>} consumables.style Style name or array of style names.\n\t * @returns {Boolean|null} Returns `true` when all items included in method's call can be consumed. Returns `false`\n\t * when first already consumed item is found and `null` when first non-consumable item is found.\n\t */\n\ttest( element, consumables ) {\n\t\tconst elementConsumables = this._consumables.get( element );\n\n\t\tif ( elementConsumables === undefined ) {\n\t\t\treturn null;\n\t\t}\n\n\t\t// For text nodes and document fragments return stored boolean value.\n\t\tif ( element.is( 'text' ) || element.is( 'documentFragment' ) ) {\n\t\t\treturn elementConsumables;\n\t\t}\n\n\t\t// For elements test consumables object.\n\t\treturn elementConsumables.test( consumables );\n\t}\n\n\t/**\n\t * Consumes {@link module:engine/view/element~Element view element}, {@link module:engine/view/text~Text text node} or\n\t * {@link module:engine/view/documentfragment~DocumentFragment document fragment}.\n\t * It returns `true` when all items included in method's call can be consumed, otherwise returns `false`.\n\t *\n\t *\t\tviewConsumable.consume( p, { name: true } ); // Consumes element's name.\n\t *\t\tviewConsumable.consume( p, { attribute: 'name' } ); // Consumes element's attribute.\n\t *\t\tviewConsumable.consume( p, { class: 'foobar' } ); // Consumes element's class.\n\t *\t\tviewConsumable.consume( p, { style: 'color' } ); // Consumes element's style.\n\t *\t\tviewConsumable.consume( p, { attribute: 'name', style: 'color' } ); // Consumes attribute and style.\n\t *\t\tviewConsumable.consume( p, { class: [ 'baz', 'bar' ] } ); // Multiple consumables can be consumed.\n\t *\t\tviewConsumable.consume( textNode ); // Consumes text node.\n\t *\t\tviewConsumable.consume( docFragment ); // Consumes document fragment.\n\t *\n\t * Consuming classes and styles as attribute will test if all added classes/styles can be consumed.\n\t *\n\t *\t\tviewConsumable.consume( p, { attribute: 'class' } ); // Consume only if all added classes can be consumed.\n\t *\t\tviewConsumable.consume( p, { attribute: 'style' } ); // Consume only if all added styles can be consumed.\n\t *\n\t * @param {module:engine/view/element~Element|module:engine/view/text~Text|module:engine/view/documentfragment~DocumentFragment} element\n\t * @param {Object} [consumables] Used only if first parameter is {@link module:engine/view/element~Element view element} instance.\n\t * @param {Boolean} consumables.name If set to true element's name will be included.\n\t * @param {String|Array.<String>} consumables.attribute Attribute name or array of attribute names.\n\t * @param {String|Array.<String>} consumables.class Class name or array of class names.\n\t * @param {String|Array.<String>} consumables.style Style name or array of style names.\n\t * @returns {Boolean} Returns `true` when all items included in method's call can be consumed,\n\t * otherwise returns `false`.\n\t */\n\tconsume( element, consumables ) {\n\t\tif ( this.test( element, consumables ) ) {\n\t\t\tif ( element.is( 'text' ) || element.is( 'documentFragment' ) ) {\n\t\t\t\t// For text nodes and document fragments set value to false.\n\t\t\t\tthis._consumables.set( element, false );\n\t\t\t} else {\n\t\t\t\t// For elements - consume consumables object.\n\t\t\t\tthis._consumables.get( element ).consume( consumables );\n\t\t\t}\n\n\t\t\treturn true;\n\t\t}\n\n\t\treturn false;\n\t}\n\n\t/**\n\t * Reverts {@link module:engine/view/element~Element view element}, {@link module:engine/view/text~Text text node} or\n\t * {@link module:engine/view/documentfragment~DocumentFragment document fragment} so they can be consumed once again.\n\t * Method does not revert items that were never previously added for consumption, even if they are included in\n\t * method's call.\n\t *\n\t *\t\tviewConsumable.revert( p, { name: true } ); // Reverts element's name.\n\t *\t\tviewConsumable.revert( p, { attribute: 'name' } ); // Reverts element's attribute.\n\t *\t\tviewConsumable.revert( p, { class: 'foobar' } ); // Reverts element's class.\n\t *\t\tviewConsumable.revert( p, { style: 'color' } ); // Reverts element's style.\n\t *\t\tviewConsumable.revert( p, { attribute: 'name', style: 'color' } ); // Reverts attribute and style.\n\t *\t\tviewConsumable.revert( p, { class: [ 'baz', 'bar' ] } ); // Multiple names can be reverted.\n\t *\t\tviewConsumable.revert( textNode ); // Reverts text node.\n\t *\t\tviewConsumable.revert( docFragment ); // Reverts document fragment.\n\t *\n\t * Reverting classes and styles as attribute will revert all classes/styles that were previously added for\n\t * consumption.\n\t *\n\t *\t\tviewConsumable.revert( p, { attribute: 'class' } ); // Reverts all classes added for consumption.\n\t *\t\tviewConsumable.revert( p, { attribute: 'style' } ); // Reverts all styles added for consumption.\n\t *\n\t * @param {module:engine/view/element~Element|module:engine/view/text~Text|module:engine/view/documentfragment~DocumentFragment} element\n\t * @param {Object} [consumables] Used only if first parameter is {@link module:engine/view/element~Element view element} instance.\n\t * @param {Boolean} consumables.name If set to true element's name will be included.\n\t * @param {String|Array.<String>} consumables.attribute Attribute name or array of attribute names.\n\t * @param {String|Array.<String>} consumables.class Class name or array of class names.\n\t * @param {String|Array.<String>} consumables.style Style name or array of style names.\n\t */\n\trevert( element, consumables ) {\n\t\tconst elementConsumables = this._consumables.get( element );\n\n\t\tif ( elementConsumables !== undefined ) {\n\t\t\tif ( element.is( 'text' ) || element.is( 'documentFragment' ) ) {\n\t\t\t\t// For text nodes and document fragments - set consumable to true.\n\t\t\t\tthis._consumables.set( element, true );\n\t\t\t} else {\n\t\t\t\t// For elements - revert items from consumables object.\n\t\t\t\telementConsumables.revert( consumables );\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Creates consumable object from {@link module:engine/view/element~Element view element}. Consumable object will include\n\t * element's name and all its attributes, classes and styles.\n\t *\n\t * @static\n\t * @param {module:engine/view/element~Element} element\n\t * @returns {Object} consumables\n\t */\n\tstatic consumablesFromElement( element ) {\n\t\tconst consumables = {\n\t\t\tname: true,\n\t\t\tattribute: [],\n\t\t\tclass: [],\n\t\t\tstyle: []\n\t\t};\n\n\t\tconst attributes = element.getAttributeKeys();\n\n\t\tfor ( let attribute of attributes ) {\n\t\t\t// Skip classes and styles - will be added separately.\n\t\t\tif ( attribute == 'style' || attribute == 'class' ) {\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\tconsumables.attribute.push( attribute );\n\t\t}\n\n\t\tconst classes = element.getClassNames();\n\n\t\tfor ( let className of classes ) {\n\t\t\tconsumables.class.push( className );\n\t\t}\n\n\t\tconst styles = element.getStyleNames();\n\n\t\tfor ( let style of styles ) {\n\t\t\tconsumables.style.push( style );\n\t\t}\n\n\t\treturn consumables;\n\t}\n\n\t/**\n\t * Creates {@link module:engine/conversion/viewconsumable~ViewConsumable ViewConsumable} instance from\n\t * {@link module:engine/view/node~Node node} or {@link module:engine/view/documentfragment~DocumentFragment document fragment}.\n\t * Instance will contain all elements, child nodes, attributes, styles and classes added for consumption.\n\t *\n\t * @static\n\t * @param {module:engine/view/node~Node|module:engine/view/documentfragment~DocumentFragment} from View node or document fragment\n\t * from which `ViewConsumable` will be created.\n\t * @param {module:engine/conversion/viewconsumable~ViewConsumable} [instance] If provided, given `ViewConsumable` instance will be used\n\t * to add all consumables. It will be returned instead of a new instance.\n\t */\n\tstatic createFrom( from, instance ) {\n\t\tif ( !instance ) {\n\t\t\tinstance = new ViewConsumable();\n\t\t}\n\n\t\tif ( from.is( 'text' ) ) {\n\t\t\tinstance.add( from );\n\n\t\t\treturn instance;\n\t\t}\n\n\t\t// Add `from` itself, if it is an element.\n\t\tif ( from.is( 'element' ) ) {\n\t\t\tinstance.add( from, ViewConsumable.consumablesFromElement( from ) );\n\t\t}\n\n\t\tif ( from.is( 'documentFragment' ) ) {\n\t\t\tinstance.add( from );\n\t\t}\n\n\t\tfor ( let child of from.getChildren() ) {\n\t\t\tinstance = ViewConsumable.createFrom( child, instance );\n\t\t}\n\n\t\treturn instance;\n\t}\n}\n\n/**\n * This is a private helper-class for {@link module:engine/conversion/viewconsumable~ViewConsumable}.\n * It represents and manipulates consumable parts of a single {@link module:engine/view/element~Element}.\n *\n * @private\n */\nclass ViewElementConsumables {\n\n\t/**\n\t * Creates ViewElementConsumables instance.\n\t */\n\tconstructor()  {\n\t\t/**\n\t\t * Flag indicating if name of the element can be consumed.\n\t\t *\n\t\t * @private\n\t\t * @member {Boolean}\n\t\t */\n\t\tthis._canConsumeName = null;\n\n\t\t/**\n\t\t * Contains maps of element's consumables: attributes, classes and styles.\n\t\t *\n\t\t * @private\n\t\t * @member {Object}\n\t\t */\n\t\tthis._consumables = {\n\t\t\tattribute: new Map(),\n\t\t\tstyle: new Map(),\n\t\t\tclass: new Map()\n\t\t};\n\t}\n\n\t/**\n\t * Adds consumable parts of the {@link module:engine/view/element~Element view element}.\n\t * Element's name itself can be marked to be consumed (when element's name is consumed its attributes, classes and\n\t * styles still could be consumed):\n\t *\n\t *\t\tconsumables.add( { name: true } );\n\t *\n\t * Attributes classes and styles:\n\t *\n\t *\t\tconsumables.add( { attribute: 'title', class: 'foo', style: 'color' } );\n\t *\t\tconsumables.add( { attribute: [ 'title', 'name' ], class: [ 'foo', 'bar' ] );\n\t *\n\t * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `viewconsumable-invalid-attribute` when `class` or `style`\n\t * attribute is provided - it should be handled separately by providing `style` and `class` in consumables object.\n\t *\n\t * @param {Object} consumables Object describing which parts of the element can be consumed.\n\t * @param {Boolean} consumables.name If set to `true` element's name will be added as consumable.\n\t * @param {String|Array.<String>} consumables.attribute Attribute name or array of attribute names to add as consumable.\n\t * @param {String|Array.<String>} consumables.class Class name or array of class names to add as consumable.\n\t * @param {String|Array.<String>} consumables.style Style name or array of style names to add as consumable.\n\t */\n\tadd( consumables ) {\n\t\tif ( consumables.name ) {\n\t\t\tthis._canConsumeName = true;\n\t\t}\n\n\t\tfor ( let type in this._consumables ) {\n\t\t\tif ( type in consumables ) {\n\t\t\t\tthis._add( type, consumables[ type ] );\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Tests if parts of the {@link module:engine/view/node~Node view node} can be consumed.\n\t *\n\t * Element's name can be tested:\n\t *\n\t *\t\tconsumables.test( { name: true } );\n\t *\n\t * Attributes classes and styles:\n\t *\n\t *\t\tconsumables.test( { attribute: 'title', class: 'foo', style: 'color' } );\n\t *\t\tconsumables.test( { attribute: [ 'title', 'name' ], class: [ 'foo', 'bar' ] );\n\t *\n\t * @param {Object} consumables Object describing which parts of the element should be tested.\n\t * @param {Boolean} consumables.name If set to `true` element's name will be tested.\n\t * @param {String|Array.<String>} consumables.attribute Attribute name or array of attribute names to test.\n\t * @param {String|Array.<String>} consumables.class Class name or array of class names to test.\n\t * @param {String|Array.<String>} consumables.style Style name or array of style names to test.\n\t * @returns {Boolean|null} `true` when all tested items can be consumed, `null` when even one of the items\n\t * was never marked for consumption and `false` when even one of the items was already consumed.\n\t */\n\ttest( consumables ) {\n\t\t// Check if name can be consumed.\n\t\tif ( consumables.name && !this._canConsumeName ) {\n\t\t\treturn this._canConsumeName;\n\t\t}\n\n\t\tfor ( let type in this._consumables ) {\n\t\t\tif ( type in consumables ) {\n\t\t\t\tconst value = this._test( type, consumables[ type ] );\n\n\t\t\t\tif ( value !== true ) {\n\t\t\t\t\treturn value;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t// Return true only if all can be consumed.\n\t\treturn true;\n\t}\n\n\t/**\n\t * Consumes parts of {@link module:engine/view/element~Element view element}. This function does not check if consumable item\n\t * is already consumed - it consumes all consumable items provided.\n\t * Element's name can be consumed:\n\t *\n\t *\t\tconsumables.consume( { name: true } );\n\t *\n\t * Attributes classes and styles:\n\t *\n\t *\t\tconsumables.consume( { attribute: 'title', class: 'foo', style: 'color' } );\n\t *\t\tconsumables.consume( { attribute: [ 'title', 'name' ], class: [ 'foo', 'bar' ] );\n\t *\n\t * @param {Object} consumables Object describing which parts of the element should be consumed.\n\t * @param {Boolean} consumables.name If set to `true` element's name will be consumed.\n\t * @param {String|Array.<String>} consumables.attribute Attribute name or array of attribute names to consume.\n\t * @param {String|Array.<String>} consumables.class Class name or array of class names to consume.\n\t * @param {String|Array.<String>} consumables.style Style name or array of style names to consume.\n\t */\n\tconsume( consumables ) {\n\t\tif ( consumables.name ) {\n\t\t\tthis._canConsumeName = false;\n\t\t}\n\n\t\tfor ( let type in this._consumables ) {\n\t\t\tif ( type in consumables ) {\n\t\t\t\tthis._consume( type, consumables[ type ] );\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Revert already consumed parts of {@link module:engine/view/element~Element view Element}, so they can be consumed once again.\n\t * Element's name can be reverted:\n\t *\n\t *\t\tconsumables.revert( { name: true } );\n\t *\n\t * Attributes classes and styles:\n\t *\n\t *\t\tconsumables.revert( { attribute: 'title', class: 'foo', style: 'color' } );\n\t *\t\tconsumables.revert( { attribute: [ 'title', 'name' ], class: [ 'foo', 'bar' ] );\n\t *\n\t * @param {Object} consumables Object describing which parts of the element should be reverted.\n\t * @param {Boolean} consumables.name If set to `true` element's name will be reverted.\n\t * @param {String|Array.<String>} consumables.attribute Attribute name or array of attribute names to revert.\n\t * @param {String|Array.<String>} consumables.class Class name or array of class names to revert.\n\t * @param {String|Array.<String>} consumables.style Style name or array of style names to revert.\n\t */\n\trevert( consumables ) {\n\t\tif ( consumables.name ) {\n\t\t\tthis._canConsumeName = true;\n\t\t}\n\n\t\tfor ( let type in this._consumables ) {\n\t\t\tif ( type in consumables ) {\n\t\t\t\tthis._revert( type, consumables[ type ] );\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Helper method that adds consumables of a given type: attribute, class or style.\n\t *\n\t * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `viewconsumable-invalid-attribute` when `class` or `style`\n\t * type is provided - it should be handled separately by providing actual style/class type.\n\t *\n\t * @private\n\t * @param {String} type Type of the consumable item: `attribute`, `class` or `style`.\n\t * @param {String|Array.<String>} item Consumable item or array of items.\n\t */\n\t_add( type, item ) {\n\t\tconst items = isArray( item ) ? item : [ item ];\n\t\tconst consumables = this._consumables[ type ];\n\n\t\tfor ( let name of items ) {\n\t\t\tif ( type === 'attribute' && ( name === 'class' || name === 'style' ) ) {\n\t\t\t\t/**\n\t\t\t\t * Class and style attributes should be handled separately.\n\t\t\t\t *\n\t\t\t\t * @error viewconsumable-invalid-attribute\n\t\t\t\t */\n\t\t\t\tthrow new CKEditorError( 'viewconsumable-invalid-attribute: Classes and styles should be handled separately.' );\n\t\t\t}\n\n\t\t\tconsumables.set( name, true );\n\t\t}\n\t}\n\n\t/**\n\t * Helper method that tests consumables of a given type: attribute, class or style.\n\t *\n\t * @private\n\t * @param {String} type Type of the consumable item: `attribute`, `class` or `style`.\n\t * @param {String|Array.<String>} item Consumable item or array of items.\n\t * @returns {Boolean|null} Returns `true` if all items can be consumed, `null` when one of the items cannot be\n\t * consumed and `false` when one of the items is already consumed.\n\t */\n\t_test( type, item ) {\n\t\tconst items = isArray( item ) ? item : [ item ];\n\t\tconst consumables = this._consumables[ type ];\n\n\t\tfor ( let name of items ) {\n\t\t\tif ( type === 'attribute' && ( name === 'class' || name === 'style' ) )  {\n\t\t\t\t// Check all classes/styles if class/style attribute is tested.\n\t\t\t\tconst value = this._test( name, [ ...this._consumables[ name ].keys() ] );\n\n\t\t\t\tif ( value !== true ) {\n\t\t\t\t\treturn value;\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\tconst value = consumables.get( name );\n\t\t\t\t// Return null if attribute is not found.\n\t\t\t\tif ( value === undefined ) {\n\t\t\t\t\treturn null;\n\t\t\t\t}\n\n\t\t\t\tif ( !value ) {\n\t\t\t\t\treturn false;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn true;\n\t}\n\n\t/**\n\t * Helper method that consumes items of a given type: attribute, class or style.\n\t *\n\t * @private\n\t * @param {String} type Type of the consumable item: `attribute`, `class` or `style`.\n\t * @param {String|Array.<String>} item Consumable item or array of items.\n\t */\n\t_consume( type, item ) {\n\t\tconst items = isArray( item ) ? item : [ item ];\n\t\tconst consumables = this._consumables[ type ];\n\n\t\tfor ( let name of items ) {\n\t\t\tif ( type === 'attribute' && ( name === 'class' || name === 'style' ) ) {\n\t\t\t\t// If class or style is provided for consumption - consume them all.\n\t\t\t\tthis._consume( name, [ ...this._consumables[ name ].keys() ] );\n\t\t\t} else {\n\t\t\t\tconsumables.set( name, false );\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Helper method that reverts items of a given type: attribute, class or style.\n\t *\n\t * @private\n\t * @param {String} type Type of the consumable item: `attribute`, `class` or , `style`.\n\t * @param {String|Array.<String>} item Consumable item or array of items.\n\t */\n\t_revert( type, item ) {\n\t\tconst items = isArray( item ) ? item : [ item ];\n\t\tconst consumables = this._consumables[ type ];\n\n\t\tfor ( let name of items ) {\n\t\t\tif ( type === 'attribute' && ( name === 'class' || name === 'style' ) ) {\n\t\t\t\t// If class or style is provided for reverting - revert them all.\n\t\t\t\tthis._revert( name, [ ...this._consumables[ name ].keys() ] );\n\t\t\t} else {\n\t\t\t\tconst value = consumables.get( name );\n\n\t\t\t\tif ( value === false ) {\n\t\t\t\t\tconsumables.set( name, true );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/conversion/viewconsumable.js\n// module id = 303\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/conversion/viewconversiondispatcher\n */\n\nimport ViewConsumable from './viewconsumable';\nimport EmitterMixin from '@ckeditor/ckeditor5-utils/src/emittermixin';\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\nimport extend from '@ckeditor/ckeditor5-utils/src/lib/lodash/extend';\nimport ModelRange from '../model/range';\nimport ModelPosition from '../model/position';\nimport ModelTreeWalker from '../model/treewalker';\nimport ModelNode from '../model/node';\nimport ModelDocumentFragment from '../model/documentfragment';\nimport { remove } from '../model/writer';\n\n/**\n * `ViewConversionDispatcher` is a central point of {@link module:engine/view/view view} conversion, which is a process of\n * converting given {@link module:engine/view/documentfragment~DocumentFragment view document fragment} or\n * {@link module:engine/view/element~Element}\n * into another structure. In default application, {@link module:engine/view/view view} is converted to {@link module:engine/model/model}.\n *\n * During conversion process, for all {@link module:engine/view/node~Node view nodes} from the converted view document fragment,\n * `ViewConversionDispatcher` fires corresponding events. Special callbacks called \"converters\" should listen to\n * `ViewConversionDispatcher` for those events.\n *\n * Each callback, as a first argument, is passed a special object `data` that has `input` and `output` properties.\n * `input` property contains {@link module:engine/view/node~Node view node} or\n * {@link module:engine/view/documentfragment~DocumentFragment view document fragment}\n * that is converted at the moment and might be handled by the callback. `output` property should be used to save the result\n * of conversion. Keep in mind that the `data` parameter is customizable and may contain other values - see\n * {@link ~ViewConversionDispatcher#convert}. It is also shared by reference by all callbacks\n * listening to given event. **Note**: in view to model conversion - `data` contains `context` property that is an array\n * of {@link module:engine/model/element~Element model elements}. These are model elements that will be the parent of currently\n * converted view item. `context` property is used in examples below.\n *\n * The second parameter passed to a callback is an instance of {@link module:engine/conversion/viewconsumable~ViewConsumable}. It stores\n * information about what parts of processed view item are still waiting to be handled. After a piece of view item\n * was converted, appropriate consumable value should be {@link module:engine/conversion/viewconsumable~ViewConsumable#consume consumed}.\n *\n * The third parameter passed to a callback is an instance of {@link ~ViewConversionDispatcher}\n * which provides additional tools for converters.\n *\n * Examples of providing callbacks for `ViewConversionDispatcher`:\n *\n *\t\t// Converter for paragraphs (<p>).\n *\t\tviewDispatcher.on( 'element:p', ( evt, data, consumable, conversionApi ) => {\n *\t\t\tconst paragraph = new ModelElement( 'paragraph' );\n *\t\t\tconst schemaQuery = {\n *\t\t\t\tname: 'paragraph',\n *\t\t\t\tinside: data.context\n *\t\t\t};\n *\n *\t\t\tif ( conversionApi.schema.check( schemaQuery ) ) {\n *\t\t\t\tif ( !consumable.consume( data.input, { name: true } ) ) {\n *\t\t\t\t\t// Before converting this paragraph's children we have to update their context by this paragraph.\n *\t\t\t\t\tdata.context.push( paragraph );\n *\t\t\t\t\tconst children = conversionApi.convertChildren( data.input, consumable, data );\n *\t\t\t\t\tdata.context.pop();\n *\t\t\t\t\tparagraph.appendChildren( children );\n *\t\t\t\t\tdata.output = paragraph;\n *\t\t\t\t}\n *\t\t\t}\n *\t\t} );\n *\n *\t\t// Converter for links (<a>).\n *\t\tviewDispatcher.on( 'element:a', ( evt, data, consumable, conversionApi ) => {\n *\t\t\tif ( consumable.consume( data.input, { name: true, attributes: [ 'href' ] } ) ) {\n *\t\t\t\t// <a> element is inline and is represented by an attribute in the model.\n *\t\t\t\t// This is why we are not updating `context` property.\n *\t\t\t\tdata.output = conversionApi.convertChildren( data.input, consumable, data );\n *\n *\t\t\t\tfor ( let item of Range.createFrom( data.output ) ) {\n *\t\t\t\t\tconst schemaQuery = {\n *\t\t\t\t\t\tname: item.name || '$text',\n *\t\t\t\t\t\tattribute: 'link',\n *\t\t\t\t\t\tinside: data.context\n *\t\t\t\t\t};\n *\n *\t\t\t\t\tif ( conversionApi.schema.check( schemaQuery ) ) {\n *\t\t\t\t\t\titem.setAttribute( 'link', data.input.getAttribute( 'href' ) );\n *\t\t\t\t\t}\n *\t\t\t\t}\n *\t\t\t}\n *\t\t} );\n *\n *\t\t// Fire conversion.\n *\t\t// Always take care where the converted model structure will be appended to. If this `viewDocumentFragment`\n *\t\t// is going to be appended directly to a '$root' element, use that in `context`.\n *\t\tviewDispatcher.convert( viewDocumentFragment, { context: [ '$root' ] } );\n *\n * Before each conversion process, `ViewConversionDispatcher` fires {@link ~ViewConversionDispatcher#event:viewCleanup}\n * event which can be used to prepare tree view for conversion.\n *\n * @mixes module:utils/emittermixin~EmitterMixin\n * @fires viewCleanup\n * @fires element\n * @fires text\n * @fires documentFragment\n */\nexport default class ViewConversionDispatcher {\n\t/**\n\t * Creates a `ViewConversionDispatcher` that operates using passed API.\n\t *\n\t * @see module:engine/conversion/viewconversiondispatcher~ViewConversionApi\n\t * @param {Object} [conversionApi] Additional properties for interface that will be passed to events fired\n\t * by `ViewConversionDispatcher`.\n\t */\n\tconstructor( conversionApi = {} ) {\n\t\t/**\n\t\t * Interface passed by dispatcher to the events callbacks.\n\t\t *\n\t\t * @member {module:engine/conversion/viewconversiondispatcher~ViewConversionApi}\n\t\t */\n\t\tthis.conversionApi = extend( {}, conversionApi );\n\n\t\t// `convertItem` and `convertChildren` are bound to this `ViewConversionDispatcher` instance and\n\t\t// set on `conversionApi`. This way only a part of `ViewConversionDispatcher` API is exposed.\n\t\tthis.conversionApi.convertItem = this._convertItem.bind( this );\n\t\tthis.conversionApi.convertChildren = this._convertChildren.bind( this );\n\t}\n\n\t/**\n\t * Starts the conversion process. The entry point for the conversion.\n\t *\n\t * @fires element\n\t * @fires text\n\t * @fires documentFragment\n\t * @param {module:engine/view/documentfragment~DocumentFragment|module:engine/view/element~Element}\n\t * viewItem Part of the view to be converted.\n\t * @param {Object} [additionalData] Additional data to be passed in `data` argument when firing `ViewConversionDispatcher`\n\t * events. See also {@link ~ViewConversionDispatcher#event:element element event}.\n\t * @returns {module:engine/model/documentfragment~DocumentFragment} Model data that is a result of the conversion process\n\t * wrapped by DocumentFragment. Converted marker stamps will be set as DocumentFragment\n\t * {@link module:engine/view/documentfragment~DocumentFragment#markers static markers map}.\n\t */\n\tconvert( viewItem, additionalData = {} ) {\n\t\tthis.fire( 'viewCleanup', viewItem );\n\n\t\tconst consumable = ViewConsumable.createFrom( viewItem );\n\t\tconst conversionResult = this._convertItem( viewItem, consumable, additionalData );\n\n\t\t// In some cases conversion output doesn't have to be a node and in this case we do nothing additional with this data.\n\t\tif ( !( conversionResult instanceof ModelNode || conversionResult instanceof ModelDocumentFragment ) ) {\n\t\t\treturn conversionResult;\n\t\t}\n\n\t\tlet documentFragment = conversionResult;\n\n\t\t// When conversion result is not a DocumentFragment we need to wrap it by DocumentFragment.\n\t\tif ( !documentFragment.is( 'documentFragment' ) ) {\n\t\t\tdocumentFragment = new ModelDocumentFragment( [ documentFragment ] );\n\t\t}\n\n\t\t// Extract temporary markers stamp from model and set as static markers collection.\n\t\tdocumentFragment.markers = extractMarkersFromModelFragment( documentFragment );\n\n\t\treturn documentFragment;\n\t}\n\n\t/**\n\t * @private\n\t * @see module:engine/conversion/viewconversiondispatcher~ViewConversionApi#convertItem\n\t */\n\t_convertItem( input, consumable, additionalData = {} ) {\n\t\tconst data = extend( {}, additionalData, {\n\t\t\tinput: input,\n\t\t\toutput: null\n\t\t} );\n\n\t\tif ( input.is( 'element' ) ) {\n\t\t\tthis.fire( 'element:' + input.name, data, consumable, this.conversionApi );\n\t\t} else if ( input.is( 'text' ) ) {\n\t\t\tthis.fire( 'text', data, consumable, this.conversionApi );\n\t\t} else {\n\t\t\tthis.fire( 'documentFragment', data, consumable, this.conversionApi );\n\t\t}\n\n\t\treturn data.output;\n\t}\n\n\t/**\n\t * @private\n\t * @see module:engine/conversion/viewconversiondispatcher~ViewConversionApi#convertChildren\n\t */\n\t_convertChildren( input, consumable, additionalData = {} ) {\n\t\tconst viewChildren = Array.from( input.getChildren() );\n\t\tconst convertedChildren = viewChildren.map( ( viewChild ) => this._convertItem( viewChild, consumable, additionalData ) );\n\n\t\t// Flatten and remove nulls.\n\t\treturn convertedChildren.reduce( ( a, b ) => b ? a.concat( b ) : a, [] );\n\t}\n\n\t/**\n\t * Fired before the first conversion event, at the beginning of view to model conversion process.\n\t *\n\t * @event viewCleanup\n\t * @param {module:engine/view/documentfragment~DocumentFragment|module:engine/view/element~Element}\n\t * viewItem Part of the view to be converted.\n\t */\n\n\t/**\n\t * Fired when {@link module:engine/view/element~Element} is converted.\n\t *\n\t * `element` is a namespace event for a class of events. Names of actually called events follow this pattern:\n\t * `element:<elementName>` where `elementName` is the name of converted element. This way listeners may listen to\n\t * all elements conversion or to conversion of specific elements.\n\t *\n\t * @event element\n\t * @param {Object} data Object containing conversion input and a placeholder for conversion output and possibly other\n\t * values (see {@link #convert}).\n\t * Keep in mind that this object is shared by reference between all callbacks that will be called.\n\t * This means that callbacks can add their own values if needed,\n\t * and those values will be available in other callbacks.\n\t * @param {module:engine/view/element~Element} data.input Converted element.\n\t * @param {*} data.output The current state of conversion result. Every change to converted element should\n\t * be reflected by setting or modifying this property.\n\t * @param {module:engine/model/schema~SchemaPath} data.context The conversion context.\n\t * @param {module:engine/conversion/viewconsumable~ViewConsumable} consumable Values to consume.\n\t * @param {Object} conversionApi Conversion interface to be used by callback, passed in `ViewConversionDispatcher` constructor.\n\t * Besides of properties passed in constructor, it also has `convertItem` and `convertChildren` methods which are references\n\t * to {@link #_convertItem} and\n\t * {@link ~ViewConversionDispatcher#_convertChildren}. Those methods are needed to convert\n\t * the whole view-tree they were exposed in `conversionApi` for callbacks.\n\t */\n\n\t/**\n\t * Fired when {@link module:engine/view/text~Text} is converted.\n\t *\n\t * @event text\n\t * @see #event:element\n\t */\n\n\t/**\n\t * Fired when {@link module:engine/view/documentfragment~DocumentFragment} is converted.\n\t *\n\t * @event documentFragment\n\t * @see #event:element\n\t */\n}\n\nmix( ViewConversionDispatcher, EmitterMixin );\n\n// Traverses given model item and searches elements which marks marker range. Found element is removed from\n// DocumentFragment but path of this element is stored in a Map which is then returned.\n//\n// @param {module:engine/view/documentfragment~DocumentFragment|module:engine/view/node~Node} modelItem Fragment of model.\n// @returns {Map<String, module:engine/model/range~Range>} List of static markers.\nfunction extractMarkersFromModelFragment( modelItem ) {\n\tconst markerStamps = new Set();\n\tconst markers = new Map();\n\n\t// Create ModelTreeWalker.\n\tconst walker = new ModelTreeWalker( {\n\t\tstartPosition: ModelPosition.createAt( modelItem, 0 ),\n\t\tignoreElementEnd: true\n\t} );\n\n\t// Walk through DocumentFragment and collect marker elements.\n\tfor ( const value of walker ) {\n\t\t// Check if current element is a marker stamp.\n\t\tif ( value.item.name == '$marker' ) {\n\t\t\tmarkerStamps.add( value.item );\n\t\t}\n\t}\n\n\t// Walk through collected marker elements store its path and remove its from the DocumentFragment.\n\tfor ( const stamp of markerStamps ) {\n\t\tconst markerName = stamp.getAttribute( 'data-name' );\n\t\tconst currentPosition = ModelPosition.createBefore( stamp );\n\n\t\t// When marker of given name is not stored it means that we have found the beginning of the range.\n\t\tif ( !markers.has( markerName ) ) {\n\t\t\tmarkers.set( markerName, new ModelRange( ModelPosition.createFromPosition( currentPosition ) ) );\n\t\t// Otherwise is means that we have found end of the marker range.\n\t\t} else {\n\t\t\tmarkers.get( markerName ).end = ModelPosition.createFromPosition( currentPosition );\n\t\t}\n\n\t\t// Remove marker stamp element from DocumentFragment.\n\t\tremove( ModelRange.createOn( stamp ) );\n\t}\n\n\treturn markers;\n}\n\n/**\n * Conversion interface that is registered for given {@link module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher}\n * and is passed as one of parameters when {@link module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher dispatcher}\n * fires it's events.\n *\n * `ViewConversionApi` object is built by {@link module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher} constructor.\n * The exact list of properties of this object is determined by the object passed to the constructor.\n *\n * @interface ViewConversionApi\n */\n\n/**\n * Starts conversion of given item by firing an appropriate event.\n *\n * Every fired event is passed (as first parameter) an object with `output` property. Every event may set and/or\n * modify that property. When all callbacks are done, the final value of `output` property is returned by this method.\n *\n * @method #convertItem\n * @fires module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher#event:element\n * @fires module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher#event:text\n * @fires module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher#event:documentFragment\n * @param {module:engine/view/documentfragment~DocumentFragment|module:engine/view/element~Element|module:engine/view/text~Text}\n * input Item to convert.\n * @param {module:engine/conversion/viewconsumable~ViewConsumable} consumable Values to consume.\n * @param {Object} [additionalData] Additional data to be passed in `data` argument when firing `ViewConversionDispatcher`\n * events. See also {@link module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher#event:element element event}.\n * @returns {*} The result of item conversion, created and modified by callbacks attached to fired event.\n */\n\n/**\n * Starts conversion of all children of given item by firing appropriate events for all those children.\n *\n * @method #convertChildren\n * @fires module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher#event:element\n * @fires module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher#event:text\n * @fires module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher#event:documentFragment\n * @param {module:engine/view/documentfragment~DocumentFragment|module:engine/view/element~Element}\n * input Item which children will be converted.\n * @param {module:engine/conversion/viewconsumable~ViewConsumable} consumable Values to consume.\n * @param {Object} [additionalData] Additional data to be passed in `data` argument when firing `ViewConversionDispatcher`\n * events. See also {@link module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher#event:element element event}.\n * @returns {Array.<*>} Array containing results of conversion of all children of given item.\n */\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/conversion/viewconversiondispatcher.js\n// module id = 304\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/dataprocessor/basichtmlwriter\n */\n\n/* globals document */\n\n/**\n * Basic HTML writer, it uses the native `innerHTML` property for basic conversion\n * from DocumentFragment to an HTML string.\n *\n * @implements module:engine/dataprocessor/htmlwriter~HtmlWriter\n */\nexport default class BasicHtmlWriter {\n\t/**\n\t * Returns HTML string created from DocumentFragment.\n\t *\n\t * @param {DocumentFragment} fragment\n\t * @returns {String}\n\t */\n\tgetHtml( fragment ) {\n\t\tconst doc = document.implementation.createHTMLDocument( '' );\n\t\tconst container = doc.createElement( 'div' );\n\t\tcontainer.appendChild( fragment );\n\n\t\treturn container.innerHTML;\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/dataprocessor/basichtmlwriter.js\n// module id = 305\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/delta/basic-deltas\n */\n\n// Deltas require `register` method that require `Batch` class and is defined in batch-base.js.\n// We would like to group all deltas files in one place, so we would only have to include batch.js\n// which would already have all default deltas registered.\n\n// Import default suite of deltas so a feature have to include only Batch class file.\nimport d01 from './attributedelta';\nimport d02 from './insertdelta';\nimport d03 from './mergedelta';\nimport d04 from './movedelta';\nimport d05 from './removedelta';\nimport d06 from './renamedelta';\nimport d07 from './splitdelta';\nimport d08 from './unwrapdelta';\nimport d09 from './weakinsertdelta';\nimport d10 from './wrapdelta';\n/*jshint unused: false*/\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/delta/basic-deltas.js\n// module id = 306\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/delta/basic-transformations\n */\n\nimport { addTransformationCase, defaultTransform } from './transform';\n\nimport Range from '../range';\nimport Position from '../position';\n\nimport NoOperation from '../operation/nooperation';\nimport AttributeOperation from '../operation/attributeoperation';\nimport InsertOperation from '../operation/insertoperation';\nimport ReinsertOperation from '../operation/reinsertoperation';\n\nimport Delta from './delta';\nimport AttributeDelta from './attributedelta';\nimport InsertDelta from './insertdelta';\nimport MarkerDelta from './markerdelta';\nimport MergeDelta from './mergedelta';\nimport MoveDelta from './movedelta';\nimport SplitDelta from './splitdelta';\nimport WeakInsertDelta from './weakinsertdelta';\nimport WrapDelta from './wrapdelta';\nimport UnwrapDelta from './unwrapdelta';\nimport RenameDelta from './renamedelta';\nimport RemoveDelta from './removedelta';\n\nimport compareArrays from '@ckeditor/ckeditor5-utils/src/comparearrays';\n\n// Provide transformations for default deltas.\n\n// Add special case for AttributeDelta x WeakInsertDelta transformation.\naddTransformationCase( AttributeDelta, WeakInsertDelta, ( a, b, isStrong ) => {\n\t// If nodes are weak-inserted into attribute delta range, we need to apply changes from attribute delta on them.\n\t// So first we do the normal transformation and if this special cases happens, we will add an extra delta.\n\tconst deltas = defaultTransform( a, b, isStrong );\n\n\tif ( a.range.containsPosition( b.position ) ) {\n\t\tdeltas.push( _getComplementaryAttrDelta( b, a ) );\n\t}\n\n\treturn deltas;\n} );\n\n// Add special case for AttributeDelta x SplitDelta transformation.\naddTransformationCase( AttributeDelta, SplitDelta, ( a, b, isStrong ) => {\n\tconst splitPosition = new Position( b.position.root, b.position.path.slice( 0, -1 ) );\n\n\tconst deltas = defaultTransform( a, b, isStrong );\n\n\tfor ( let operation of a.operations ) {\n\t\t// If a node that has been split has it's attribute updated, we should also update attribute of\n\t\t// the node created during splitting.\n\t\tif ( operation.range.containsPosition( splitPosition ) || operation.range.start.isEqual( splitPosition ) ) {\n\t\t\tconst additionalAttributeDelta = new AttributeDelta();\n\n\t\t\tconst rangeStart = splitPosition.getShiftedBy( 1 );\n\t\t\tconst rangeEnd = Position.createFromPosition( rangeStart );\n\t\t\trangeEnd.path.push( 0 );\n\n\t\t\tconst oldValue = b._cloneOperation.nodes.getNode( 0 ).getAttribute( operation.key );\n\n\t\t\tadditionalAttributeDelta.addOperation( new AttributeOperation(\n\t\t\t\tnew Range( rangeStart, rangeEnd ),\n\t\t\t\toperation.key,\n\t\t\t\toldValue === undefined ? null : oldValue,\n\t\t\t\toperation.newValue,\n\t\t\t\t0\n\t\t\t) );\n\n\t\t\tdeltas.push( additionalAttributeDelta );\n\n\t\t\tbreak;\n\t\t}\n\t}\n\n\treturn deltas;\n} );\n\n// Add special case for InsertDelta x MergeDelta transformation.\naddTransformationCase( InsertDelta, MergeDelta, ( a, b, isStrong ) => {\n\t// If insert is applied at the same position where merge happened, we reverse the merge (we treat it like it\n\t// didn't happen) and then apply the original insert operation. This is \"mirrored\" in MergeDelta x InsertDelta\n\t// transformation below, where we simply do not apply MergeDelta.\n\tif ( a.position.isEqual( b.position ) ) {\n\t\treturn [\n\t\t\tb.getReversed(),\n\t\t\ta.clone()\n\t\t];\n\t}\n\n\treturn defaultTransform( a, b, isStrong );\n} );\n\nfunction transformMarkerDelta( a, b ) {\n\tconst transformedDelta = a.clone();\n\tconst transformedOp = transformedDelta.operations[ 0 ];\n\n\ttransformedOp.oldRange = transformedOp.oldRange.getTransformedByDelta( b )[ 0 ];\n\ttransformedOp.newRange = transformedOp.newRange.getTransformedByDelta( b )[ 0 ];\n\n\treturn [ transformedDelta ];\n}\n\naddTransformationCase( MarkerDelta, SplitDelta, transformMarkerDelta );\naddTransformationCase( MarkerDelta, MergeDelta, transformMarkerDelta );\naddTransformationCase( MarkerDelta, WrapDelta, transformMarkerDelta );\naddTransformationCase( MarkerDelta, UnwrapDelta, transformMarkerDelta );\naddTransformationCase( MarkerDelta, MoveDelta, transformMarkerDelta );\naddTransformationCase( MarkerDelta, RenameDelta, transformMarkerDelta );\n\n// Add special case for MoveDelta x MergeDelta transformation.\naddTransformationCase( MoveDelta, MergeDelta, ( a, b, isStrong ) => {\n\t// If move delta is supposed to move a node that has been merged, we reverse the merge (we treat it like it\n\t// didn't happen) and then apply the original move operation. This is \"mirrored\" in MergeDelta x MoveDelta\n\t// transformation below, where we simply do not apply MergeDelta.\n\n\tconst operateInSameParent =\n\t\ta.sourcePosition.root == b.position.root &&\n\t\tcompareArrays( a.sourcePosition.getParentPath(), b.position.getParentPath() ) === 'same';\n\n\tconst mergeInsideMoveRange = a.sourcePosition.offset <= b.position.offset && a.sourcePosition.offset + a.howMany > b.position.offset;\n\n\tif ( operateInSameParent && mergeInsideMoveRange ) {\n\t\treturn [\n\t\t\tb.getReversed(),\n\t\t\ta.clone()\n\t\t];\n\t}\n\n\treturn defaultTransform( a, b, isStrong );\n} );\n\n// Add special case for MergeDelta x InsertDelta transformation.\naddTransformationCase( MergeDelta, InsertDelta, ( a, b, isStrong ) => {\n\t// If merge is applied at the same position where we inserted a range of nodes we cancel the merge as it's results\n\t// may be unexpected and very weird. Even if we do some \"magic\" we don't know what really are users' expectations.\n\tif ( a.position.isEqual( b.position ) ) {\n\t\treturn [ noDelta() ];\n\t}\n\n\treturn defaultTransform( a, b, isStrong );\n} );\n\n// Add special case for MergeDelta x MoveDelta transformation.\naddTransformationCase( MergeDelta, MoveDelta, ( a, b, isStrong ) => {\n\t// If merge is applied at the position between moved nodes we cancel the merge as it's results may be unexpected and\n\t// very weird. Even if we do some \"magic\" we don't know what really are users' expectations.\n\n\tconst operateInSameParent =\n\t\ta.position.root == b.sourcePosition.root &&\n\t\tcompareArrays( a.position.getParentPath(), b.sourcePosition.getParentPath() ) === 'same';\n\n\tconst mergeInsideMoveRange = b.sourcePosition.offset <= a.position.offset && b.sourcePosition.offset + b.howMany > a.position.offset;\n\n\tif ( operateInSameParent && mergeInsideMoveRange ) {\n\t\treturn [ noDelta() ];\n\t}\n\n\treturn defaultTransform( a, b, isStrong );\n} );\n\n// Add special case for SplitDelta x SplitDelta transformation.\naddTransformationCase( SplitDelta, SplitDelta, ( a, b, isStrong ) => {\n\tconst pathA = a.position.getParentPath();\n\tconst pathB = b.position.getParentPath();\n\n\t// The special case is for splits inside the same parent.\n\tif ( compareArrays( pathA, pathB ) == 'same' ) {\n\t\tif ( a.position.offset == b.position.offset ) {\n\t\t\t// We are applying split at the position where split already happened. Additional split is not needed.\n\t\t\treturn [ noDelta() ];\n\t\t} else if ( a.position.offset < b.position.offset ) {\n\t\t\t// Incoming split delta splits at closer offset. So we simply have to once again split the same node,\n\t\t\t// but since it was already split (at further offset) there are less child nodes in the split node.\n\t\t\t// This means that we have to update `howMany` parameter of `MoveOperation` for that delta.\n\n\t\t\tconst delta = a.clone();\n\t\t\tdelta._moveOperation.howMany = b.position.offset - a.position.offset;\n\n\t\t\t// If both SplitDeltas are taking their nodes from graveyard, we have to transform their ReinsertOperations.\n\t\t\tif (\n\t\t\t\ta._cloneOperation instanceof ReinsertOperation &&\n\t\t\t\tb._cloneOperation instanceof ReinsertOperation &&\n\t\t\t\ta._cloneOperation.sourcePosition.offset > b._cloneOperation.sourcePosition.offset\n\t\t\t) {\n\t\t\t\tdelta._cloneOperation.sourcePosition.offset--;\n\t\t\t}\n\n\t\t\treturn [ delta ];\n\t\t} else {\n\t\t\t// Incoming split delta splits at further offset. We have to simulate that we are not splitting the\n\t\t\t// original split node but the node after it, which got created by the other split delta.\n\t\t\t// To do so, we increment offsets so it looks like the split delta was created in the next node.\n\n\t\t\tconst delta = a.clone();\n\n\t\t\tdelta._cloneOperation.position.offset++;\n\t\t\tdelta._moveOperation.sourcePosition.path[ delta._moveOperation.sourcePosition.path.length - 2 ]++;\n\t\t\tdelta._moveOperation.targetPosition.path[ delta._moveOperation.targetPosition.path.length - 2 ]++;\n\t\t\tdelta._moveOperation.sourcePosition.offset = a.position.offset - b.position.offset;\n\n\t\t\t// If both SplitDeltas are taking their nodes from graveyard, we have to transform their ReinsertOperations.\n\t\t\tif (\n\t\t\t\ta._cloneOperation instanceof ReinsertOperation &&\n\t\t\t\tb._cloneOperation instanceof ReinsertOperation &&\n\t\t\t\ta._cloneOperation.sourcePosition.offset > b._cloneOperation.sourcePosition.offset\n\t\t\t) {\n\t\t\t\tdelta._cloneOperation.sourcePosition.offset--;\n\t\t\t}\n\n\t\t\treturn [ delta ];\n\t\t}\n\t}\n\n\treturn defaultTransform( a, b, isStrong );\n} );\n\n// Add special case for SplitDelta x UnwrapDelta transformation.\naddTransformationCase( SplitDelta, UnwrapDelta, ( a, b, isStrong ) => {\n\t// If incoming split delta tries to split a node that just got unwrapped, there is actually nothing to split,\n\t// so we discard that delta.\n\tif ( compareArrays( b.position.path, a.position.getParentPath() ) === 'same' ) {\n\t\treturn [ noDelta() ];\n\t}\n\n\treturn defaultTransform( a, b, isStrong );\n} );\n\n// Add special case for SplitDelta x WrapDelta transformation.\naddTransformationCase( SplitDelta, WrapDelta, ( a, b, isStrong ) => {\n\t// If split is applied at the position between wrapped nodes, we cancel the split as it's results may be unexpected and\n\t// very weird. Even if we do some \"magic\" we don't know what really are users' expectations.\n\n\tconst operateInSameParent = compareArrays( a.position.getParentPath(), b.range.start.getParentPath() ) === 'same';\n\tconst splitInsideWrapRange = b.range.start.offset < a.position.offset && b.range.end.offset >= a.position.offset;\n\n\tif ( operateInSameParent && splitInsideWrapRange ) {\n\t\treturn [ noDelta() ];\n\t} else if ( compareArrays( a.position.getParentPath(), b.range.end.getShiftedBy( -1 ).path ) === 'same' ) {\n\t\t// Split position is directly inside the last node from wrap range.\n\t\t// If that's the case, we manually change split delta so it will \"target\" inside the wrapping element.\n\t\t// By doing so we will be inserting split node right to the original node which feels natural and is a good UX.\n\t\tconst delta = a.clone();\n\n\t\t// 1. Fix insert operation position.\n\t\t// Node to split is the last children of the wrapping element.\n\t\t// Wrapping element is the element inserted by WrapDelta (re)insert operation.\n\t\t// It is inserted after the wrapped range, but the wrapped range will be moved inside it.\n\t\t// Having this in mind, it is correct to use wrapped range start position as the position before wrapping element.\n\t\tconst splitNodePos = Position.createFromPosition( b.range.start );\n\t\t// Now, `splitNodePos` points before wrapping element.\n\t\t// To get a position before last children of that element, we expand position's `path` member by proper offset.\n\t\tsplitNodePos.path.push( b.howMany - 1 );\n\n\t\t// SplitDelta insert operation position should be right after the node we split.\n\t\tconst insertPos = splitNodePos.getShiftedBy( 1 );\n\t\tdelta._cloneOperation.position = insertPos;\n\n\t\t// 2. Fix move operation source position.\n\t\t// Nodes moved by SplitDelta will be moved from new position, modified by WrapDelta.\n\t\t// To obtain that new position, `splitNodePos` will be used, as this is the node we are extracting children from.\n\t\tconst sourcePos = Position.createFromPosition( splitNodePos );\n\t\t// Nothing changed inside split node so it is correct to use the original split position offset.\n\t\tsourcePos.path.push( a.position.offset );\n\t\tdelta._moveOperation.sourcePosition = sourcePos;\n\n\t\t// 3. Fix move operation target position.\n\t\t// SplitDelta move operation target position should be inside the node inserted by operation above.\n\t\t// Since the node is empty, we will insert at offset 0.\n\t\tconst targetPos = Position.createFromPosition( insertPos );\n\t\ttargetPos.path.push( 0 );\n\t\tdelta._moveOperation.targetPosition = targetPos;\n\n\t\treturn [ delta ];\n\t}\n\n\treturn defaultTransform( a, b, isStrong );\n} );\n\n// Add special case for SplitDelta x WrapDelta transformation.\naddTransformationCase( SplitDelta, AttributeDelta, ( a, b ) => {\n\ta = a.clone();\n\n\tconst splitPosition = new Position( a.position.root, a.position.path.slice( 0, -1 ) );\n\n\tif ( a._cloneOperation instanceof InsertOperation ) {\n\t\t// If element to split had it's attribute changed, we have to reflect this change in an element\n\t\t// that is in SplitDelta's InsertOperation.\n\t\tfor ( let operation of b.operations ) {\n\t\t\tif ( operation.range.containsPosition( splitPosition ) || operation.range.start.isEqual( splitPosition ) ) {\n\t\t\t\tif ( operation.newValue !== null ) {\n\t\t\t\t\ta._cloneOperation.nodes.getNode( 0 ).setAttribute( operation.key, operation.newValue );\n\t\t\t\t} else {\n\t\t\t\t\ta._cloneOperation.nodes.getNode( 0 ).removeAttribute( operation.key );\n\t\t\t\t}\n\n\t\t\t\tbreak;\n\t\t\t}\n\t\t}\n\t}\n\n\treturn [ a ];\n} );\n\n// Add special case for UnwrapDelta x SplitDelta transformation.\naddTransformationCase( UnwrapDelta, SplitDelta, ( a, b, isStrong ) => {\n\t// If incoming unwrap delta tries to unwrap node that got split we should unwrap the original node and the split copy.\n\t// This can be achieved either by reverting split and applying unwrap to singular node, or creating additional unwrap delta.\n\tif ( compareArrays( a.position.path, b.position.getParentPath() ) === 'same' ) {\n\t\tconst transformed = [\n\t\t\tb.getReversed(),\n\t\t\ta.clone()\n\t\t];\n\n\t\t// It's a kind of magic-magic-magic-maaaaagiiic!\n\t\ttransformed[ 1 ].operations[ 1 ].targetPosition.path[ 0 ]++;\n\t\t// But seriously, we have to fix RemoveOperation in the second delta because reversed UnwrapDelta creates\n\t\t// MergeDelta which also has RemoveOperation. Those two operations cannot point to the same \"holder\" element\n\t\t// in the graveyard, so we fix it by hand. This is the only case where it happens in \"special\" transformation\n\t\t// cases, and it won't happen for \"default\" transformation apart of RemoveDelta, where it is okay.\n\n\t\treturn transformed;\n\t}\n\n\treturn defaultTransform( a, b, isStrong );\n} );\n\n// Add special case for WeakInsertDelta x AttributeDelta transformation.\naddTransformationCase( WeakInsertDelta, AttributeDelta, ( a, b ) => {\n\t// If nodes are weak-inserted into attribute delta range, we need to apply changes from attribute delta on them.\n\tconst deltas = [ a.clone() ];\n\n\tif ( b.range.containsPosition( a.position ) ) {\n\t\tdeltas.push( _getComplementaryAttrDelta( a, b ) );\n\t}\n\n\treturn deltas;\n} );\n\n// Add special case for WrapDelta x SplitDelta transformation.\naddTransformationCase( WrapDelta, SplitDelta, ( a, b, isStrong ) => {\n\t// If incoming wrap delta tries to wrap range that contains split position, we have to cancel the split and apply\n\t// the wrap. Since split was already applied, we have to revert it.\n\n\tconst operateInSameParent = compareArrays( a.range.start.getParentPath(), b.position.getParentPath() ) === 'same';\n\tconst splitInsideWrapRange = a.range.start.offset < b.position.offset && a.range.end.offset >= b.position.offset;\n\n\tif ( operateInSameParent && splitInsideWrapRange ) {\n\t\treturn [\n\t\t\tb.getReversed(),\n\t\t\ta.clone()\n\t\t];\n\t} else if ( compareArrays( b.position.getParentPath(), a.range.end.getShiftedBy( -1 ).path ) === 'same' ) {\n\t\tconst delta = a.clone();\n\n\t\t// Move wrapping element insert position one node further so it is after the split node insertion.\n\t\tdelta._insertOperation.position.offset++;\n\n\t\t// Include the split node copy.\n\t\tdelta._moveOperation.howMany++;\n\n\t\t// Change the path to wrapping element in move operation.\n\t\tdelta._moveOperation.targetPosition.path[ delta._moveOperation.targetPosition.path.length - 2 ]++;\n\n\t\treturn [ delta ];\n\t}\n\n\treturn defaultTransform( a, b, isStrong );\n} );\n\n// Add special case for RenameDelta x SplitDelta transformation.\naddTransformationCase( RenameDelta, SplitDelta, ( a, b, isStrong ) => {\n\tconst splitPosition = new Position( b.position.root, b.position.path.slice( 0, -1 ) );\n\n\tconst deltas = defaultTransform( a, b, isStrong );\n\n\tif ( a.operations[ 0 ].position.isEqual( splitPosition ) ) {\n\t\t// If a node that has been split has it's name changed, we should also change name of\n\t\t// the node created during splitting.\n\t\tconst additionalRenameDelta = a.clone();\n\t\tadditionalRenameDelta.operations[ 0 ].position = a.operations[ 0 ].position.getShiftedBy( 1 );\n\n\t\tdeltas.push( additionalRenameDelta );\n\t}\n\n\treturn deltas;\n} );\n\n// Add special case for SplitDelta x RenameDelta transformation.\naddTransformationCase( SplitDelta, RenameDelta, ( a, b ) => {\n\ta = a.clone();\n\n\tconst splitPosition = new Position( a.position.root, a.position.path.slice( 0, -1 ) );\n\n\tif ( a._cloneOperation instanceof InsertOperation ) {\n\t\t// If element to split had it's name changed, we have to reflect this change in an element\n\t\t// that is in SplitDelta's InsertOperation.\n\t\tif ( b.operations[ 0 ].position.isEqual( splitPosition ) ) {\n\t\t\ta._cloneOperation.nodes.getNode( 0 ).name = b.operations[ 0 ].newName;\n\t\t}\n\t}\n\n\treturn [ a ];\n} );\n\n// Add special case for RemoveDelta x SplitDelta transformation.\naddTransformationCase( RemoveDelta, SplitDelta, ( a, b, isStrong ) => {\n\tconst deltas = defaultTransform( a, b, isStrong );\n\tconst insertPosition = b._cloneOperation.position;\n\n\t// In case if `defaultTransform` returned more than one delta.\n\tfor ( let delta of deltas ) {\n\t\tfor ( let operation of delta.operations ) {\n\t\t\tconst rangeEnd = operation.sourcePosition.getShiftedBy( operation.howMany );\n\n\t\t\tif ( rangeEnd.isEqual( insertPosition ) ) {\n\t\t\t\toperation.howMany += 1;\n\t\t\t}\n\t\t}\n\t}\n\n\treturn deltas;\n} );\n\n// Add special case for SplitDelta x RemoveDelta transformation.\naddTransformationCase( SplitDelta, RemoveDelta, ( a, b, isStrong ) => {\n\tb = b.clone();\n\n\tconst insertPosition = a._cloneOperation.position;\n\n\tfor ( let operation of b.operations ) {\n\t\tconst rangeEnd = operation.sourcePosition.getShiftedBy( operation.howMany );\n\n\t\tif ( rangeEnd.isEqual( insertPosition ) ) {\n\t\t\toperation.howMany += 1;\n\t\t}\n\t}\n\n\treturn defaultTransform( a, b, isStrong );\n} );\n\n// Helper function for `AttributeDelta` class transformations.\n// Creates an attribute delta that sets attribute from given `attributeDelta` on nodes from given `weakInsertDelta`.\nfunction _getComplementaryAttrDelta( weakInsertDelta, attributeDelta ) {\n\tconst complementaryAttrDelta = new AttributeDelta();\n\tconst nodes = weakInsertDelta.nodes;\n\n\t// At the beginning we store the attribute value from the first node on `weakInsertDelta` node list.\n\tlet val = nodes.getNode( 0 ).getAttribute( attributeDelta.key );\n\n\t// This stores the last index of `weakInsertDelta` node list where the attribute value was different\n\t// than in the previous node. We need it to create separate `AttributeOperation`s for nodes with different attributes.\n\tlet lastOffset = 0;\n\t// Sum of offsets of already processed nodes.\n\tlet offsetSum = nodes.getNode( 0 ).offsetSize;\n\n\tfor ( let i = 1; i < nodes.length; i++ ) {\n\t\tconst node = nodes.getNode( i );\n\t\tconst nodeAttrVal = node.getAttribute( attributeDelta.key );\n\n\t\t// If previous node has different attribute value, we will create an operation to the point before current node.\n\t\t// So all nodes with the same attributes up to this point will be included in one `AttributeOperation`.\n\t\tif ( nodeAttrVal != val ) {\n\t\t\t// New operation is created only when it is needed. If given node already has proper value for this\n\t\t\t// attribute we simply skip it without adding a new operation.\n\t\t\tif ( val != attributeDelta.value ) {\n\t\t\t\taddOperation();\n\t\t\t}\n\n\t\t\tval = nodeAttrVal;\n\t\t\tlastOffset = offsetSum;\n\t\t}\n\n\t\toffsetSum = offsetSum + node.offsetSize;\n\t}\n\n\t// At the end we have to add additional `AttributeOperation` for the last part of node list. If all nodes on the\n\t// node list had same attributes, this will be the only operation added to the delta.\n\taddOperation();\n\n\treturn complementaryAttrDelta;\n\n\tfunction addOperation() {\n\t\tconst range = new Range(\n\t\t\tweakInsertDelta.position.getShiftedBy( lastOffset ),\n\t\t\tweakInsertDelta.position.getShiftedBy( offsetSum )\n\t\t);\n\n\t\tconst attrOperation = new AttributeOperation( range, attributeDelta.key, val, attributeDelta.value, 0 );\n\t\tcomplementaryAttrDelta.addOperation( attrOperation );\n\t}\n}\n\n// This is \"no-op\" delta, it has no type and only no-operation, it basically does nothing.\n// It is used when we don't want to apply changes but still we need to return a delta.\nfunction noDelta() {\n\tlet noDelta = new Delta();\n\n\t// BaseVersion will be fixed later anyway.\n\tnoDelta.addOperation( new NoOperation( 0 ) );\n\n\treturn noDelta;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/delta/basic-transformations.js\n// module id = 307\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/delta/markerdelta\n */\n\nimport Delta from './delta';\nimport DeltaFactory from './deltafactory';\nimport { register } from '../batch';\nimport MarkerOperation from '../operation/markeroperation';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/**\n * @classdesc\n * To provide specific OT behavior and better collisions solving, the {@link module:engine/model/batch~Batch#setMarker Batch#setMarker}\n * and {@link module:engine/model/batch~Batch#removeMarker Batch#removeMarker} methods use the `MarkerDelta` class which inherits\n * from the `Delta` class and may overwrite some methods.\n */\nexport default class MarkerDelta extends Delta {\n\t/**\n\t * @inheritDoc\n\t */\n\tget type() {\n\t\treturn 'marker';\n\t}\n\n\t/**\n\t * A class that will be used when creating reversed delta.\n\t *\n\t * @private\n\t * @type {Function}\n\t */\n\tget _reverseDeltaClass() {\n\t\treturn MarkerDelta;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.delta.MarkerDelta';\n\t}\n}\n\n/**\n * Adds or updates {@link module:engine/model/markercollection~Marker marker} with given name to given `range`.\n *\n * If passed name is a name of already existing marker (or {@link module:engine/model/markercollection~Marker Marker} instance\n * is passed), `range` parameter may be omitted. In this case marker will not be updated in\n * {@link module:engine/model/document~Document#markers document marker collection}. However the marker will be added to\n * the document history. This may be important for other features, like undo. From document history point of view, it will\n * look like the marker was created and added to the document at the moment when it is set using this method.\n *\n * This is useful if the marker is created before it can be added to document history (e.g. a feature creating the marker\n * is waiting for additional data, etc.). In this case, the marker may be first created directly through\n * {@link module:engine/model/markercollection~MarkerCollection MarkerCollection API} and only later added using `Batch` API.\n *\n * @chainable\n * @method module:engine/model/batch~Batch#setMarker\n * @param {module:engine/model/markercollection~Marker|String} markerOrName Marker or marker name to add or update.\n * @param {module:engine/model/range~Range} [newRange] Marker range.\n */\nregister( 'setMarker', function( markerOrName, newRange ) {\n\tconst name = typeof markerOrName == 'string' ? markerOrName : markerOrName.name;\n\tconst currentMarker = this.document.markers.get( name );\n\n\tif ( !newRange && !currentMarker ) {\n\t\t/**\n\t\t * Range parameter is required when adding a new marker.\n\t\t *\n\t\t * @error batch-setMarker-no-range\n\t\t */\n\t\tthrow new CKEditorError( 'batch-setMarker-no-range: Range parameter is required when adding a new marker.' );\n\t}\n\n\tconst currentRange = currentMarker ? currentMarker.getRange() : null;\n\n\tif ( !newRange ) {\n\t\t// If `newRange` is not given, treat this as synchronizing existing marker.\n\t\t// Create `MarkerOperation` with `oldRange` set to `null`, so reverse operation will remove the marker.\n\t\taddOperation( this, name, null, currentRange );\n\t} else {\n\t\t// Just change marker range.\n\t\taddOperation( this, name, currentRange, newRange );\n\t}\n\n\treturn this;\n} );\n\n/**\n * Removes given {@link module:engine/model/markercollection~Marker marker} or marker with given name.\n *\n * @chainable\n * @method module:engine/model/batch~Batch#removeMarker\n * @param {module:engine/model/markercollection~Marker|String} markerOrName Marker or marker name to remove.\n */\nregister( 'removeMarker', function( markerOrName ) {\n\tconst name = typeof markerOrName == 'string' ? markerOrName : markerOrName.name;\n\n\tif ( !this.document.markers.has( name ) ) {\n\t\t/**\n\t\t * Trying to remove marker that does not exist.\n\t\t *\n\t\t * @error batch-removeMarker-no-marker\n\t\t */\n\t\tthrow new CKEditorError( 'batch-removeMarker-no-marker: Trying to remove marker that does not exist.' );\n\t}\n\n\tconst oldRange = this.document.markers.get( name ).getRange();\n\n\taddOperation( this, name, oldRange, null );\n\n\treturn this;\n} );\n\nfunction addOperation( batch, name, oldRange, newRange ) {\n\tconst doc = batch.document;\n\tconst delta = new MarkerDelta();\n\n\tconst operation = new MarkerOperation( name, oldRange, newRange, doc.markers, doc.version );\n\n\tbatch.addDelta( delta );\n\tdelta.addOperation( operation );\n\tdoc.applyOperation( operation );\n}\n\nDeltaFactory.register( MarkerDelta );\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/delta/markerdelta.js\n// module id = 308\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/document\n */\n\n// Load all basic deltas and transformations, they register themselves, but they need to be imported somewhere.\nimport deltas from './delta/basic-deltas'; // jshint ignore:line\nimport transformations from './delta/basic-transformations'; // jshint ignore:line\n\nimport Range from './range';\nimport Position from './position';\nimport RootElement from './rootelement';\nimport Batch from './batch';\nimport History from './history';\nimport LiveSelection from './liveselection';\nimport Schema from './schema';\nimport TreeWalker from './treewalker';\nimport MarkerCollection from './markercollection';\nimport clone from '@ckeditor/ckeditor5-utils/src/lib/lodash/clone';\nimport EmitterMixin from '@ckeditor/ckeditor5-utils/src/emittermixin';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\nimport { isInsideSurrogatePair, isInsideCombinedSymbol } from '@ckeditor/ckeditor5-utils/src/unicode';\n\nconst graveyardName = '$graveyard';\n\n/**\n * Document tree model describes all editable data in the editor. It may contain multiple\n * {@link module:engine/model/document~Document#roots root elements}, for example if the editor have multiple editable areas,\n * each area will be represented by the separate root.\n *\n * All changes in the document are done by {@link module:engine/model/operation/operation~Operation operations}. To create operations in\n * a simple way, use the {@link module:engine/model/batch~Batch} API, for example:\n *\n *\t\tdoc.batch().insert( position, nodes ).split( otherPosition );\n *\n * @see module:engine/model/document~Document#batch\n * @mixes module:utils/emittermixin~EmitterMixin\n */\nexport default class Document {\n\t/**\n\t * Creates an empty document instance with no {@link #roots} (other than\n\t * the {@link #graveyard graveyard root}).\n\t */\n\tconstructor() {\n\t\t/**\n\t\t * Document version. It starts from `0` and every operation increases the version number. It is used to ensure that\n\t\t * operations are applied on the proper document version.\n\t\t * If the {@link module:engine/model/operation/operation~Operation#baseVersion} will not match document version the\n\t\t * {@link module:utils/ckeditorerror~CKEditorError model-document-applyOperation-wrong-version} error is thrown.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Number}\n\t\t */\n\t\tthis.version = 0;\n\n\t\t/**\n\t\t * Schema for this document.\n\t\t *\n\t\t * @member {module:engine/model/schema~Schema}\n\t\t */\n\t\tthis.schema = new Schema();\n\n\t\t/**\n\t\t * Document's history.\n\t\t *\n\t\t * **Note:** Be aware that deltas applied to the document might get removed or changed.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/model/history~History}\n\t\t */\n\t\tthis.history = new History( this );\n\n\t\t/**\n\t\t * Document's markers' collection.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/model/markercollection~MarkerCollection}\n\t\t */\n\t\tthis.markers = new MarkerCollection();\n\n\t\t/**\n\t\t * Selection done on this document.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/model/liveselection~LiveSelection}\n\t\t */\n\t\tthis.selection = new LiveSelection( this );\n\n\t\t/**\n\t\t * Array of pending changes. See: {@link #enqueueChanges}.\n\t\t *\n\t\t * @private\n\t\t * @member {Array.<Function>}\n\t\t */\n\t\tthis._pendingChanges = [];\n\n\t\t/**\n\t\t * List of roots that are owned and managed by this document. Use {@link #createRoot} and\n\t\t * {@link #getRoot} to manipulate it.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Map}\n\t\t */\n\t\tthis.roots = new Map();\n\n\t\t// Add events that will ensure selection correctness.\n\t\tthis.selection.on( 'change:range', () => {\n\t\t\tfor ( let range of this.selection.getRanges() ) {\n\t\t\t\tif ( !this._validateSelectionRange( range ) ) {\n\t\t\t\t\t/**\n\t\t\t\t\t * Range from document selection starts or ends at incorrect position.\n\t\t\t\t\t *\n\t\t\t\t\t * @error document-selection-wrong-position\n\t\t\t\t\t * @param {module:engine/model/range~Range} range\n\t\t\t\t\t */\n\t\t\t\t\tthrow new CKEditorError( 'document-selection-wrong-position: ' +\n\t\t\t\t\t\t'Range from document selection starts or ends at incorrect position.', { range } );\n\t\t\t\t}\n\t\t\t}\n\t\t} );\n\n\t\t// Graveyard tree root. Document always have a graveyard root, which stores removed nodes.\n\t\tthis.createRoot( '$root', graveyardName );\n\t}\n\n\t/**\n\t * Graveyard tree root. Document always have a graveyard root, which stores removed nodes.\n\t *\n\t * @readonly\n\t * @member {module:engine/model/rootelement~RootElement}\n\t */\n\tget graveyard() {\n\t\treturn this.getRoot( graveyardName );\n\t}\n\n\t/**\n\t * This is the entry point for all document changes. All changes on the document are done using\n\t * {@link module:engine/model/operation/operation~Operation operations}. To create operations in the simple way use the\n\t * {@link module:engine/model/batch~Batch} API available via {@link #batch} method.\n\t *\n\t * @fires event:change\n\t * @param {module:engine/model/operation/operation~Operation} operation Operation to be applied.\n\t */\n\tapplyOperation( operation ) {\n\t\tif ( operation.baseVersion !== this.version ) {\n\t\t\t/**\n\t\t\t * Only operations with matching versions can be applied.\n\t\t\t *\n\t\t\t * @error document-applyOperation-wrong-version\n\t\t\t * @param {module:engine/model/operation/operation~Operation} operation\n\t\t\t */\n\t\t\tthrow new CKEditorError(\n\t\t\t\t'model-document-applyOperation-wrong-version: Only operations with matching versions can be applied.',\n\t\t\t\t{ operation: operation } );\n\t\t}\n\n\t\tlet changes = operation._execute();\n\n\t\tthis.version++;\n\n\t\tthis.history.addDelta( operation.delta );\n\n\t\tif ( changes ) {\n\t\t\t// `NoOperation` returns no changes, do not fire event for it.\n\t\t\tthis.fire( 'change', operation.type, changes, operation.delta.batch, operation.delta.type );\n\t\t}\n\t}\n\n\t/**\n\t * Creates a {@link module:engine/model/batch~Batch} instance which allows to change the document.\n\t *\n\t * @param {String} [type] Batch type. See {@link module:engine/model/batch~Batch#type}.\n\t * @returns {module:engine/model/batch~Batch} Batch instance.\n\t */\n\tbatch( type ) {\n\t\treturn new Batch( this, type );\n\t}\n\n\t/**\n\t * Creates a new top-level root.\n\t *\n\t * @param {String} [elementName='$root'] Element name. Defaults to `'$root'` which also have\n\t * some basic schema defined (`$block`s are allowed inside the `$root`). Make sure to define a proper\n\t * schema if you use a different name.\n\t * @param {String} [rootName='main'] Unique root name.\n\t * @returns {module:engine/model/rootelement~RootElement} Created root.\n\t */\n\tcreateRoot( elementName = '$root', rootName = 'main' ) {\n\t\tif ( this.roots.has( rootName ) ) {\n\t\t\t/**\n\t\t\t * Root with specified name already exists.\n\t\t\t *\n\t\t\t * @error document-createRoot-name-exists\n\t\t\t * @param {module:engine/model/document~Document} doc\n\t\t\t * @param {String} name\n\t\t\t */\n\t\t\tthrow new CKEditorError(\n\t\t\t\t'model-document-createRoot-name-exists: Root with specified name already exists.',\n\t\t\t\t{ name: rootName }\n\t\t\t);\n\t\t}\n\n\t\tconst root = new RootElement( this, elementName, rootName );\n\t\tthis.roots.set( rootName, root );\n\n\t\treturn root;\n\t}\n\n\t/**\n\t * Removes all events listeners set by document instance.\n\t */\n\tdestroy() {\n\t\tthis.selection.destroy();\n\t\tthis.stopListening();\n\t}\n\n\t/**\n\t * Enqueues document changes. Any changes to be done on document (mostly using {@link #batch}\n\t * should be placed in the queued callback. If no other plugin is changing document at the moment, the callback will be\n\t * called immediately. Otherwise it will wait for all previously queued changes to finish happening. This way\n\t * queued callback will not interrupt other callbacks.\n\t *\n\t * When all queued changes are done {@link #event:changesDone} event is fired.\n\t *\n\t * @fires changesDone\n\t * @param {Function} callback Callback to enqueue.\n\t */\n\tenqueueChanges( callback ) {\n\t\tthis._pendingChanges.push( callback );\n\n\t\tif ( this._pendingChanges.length == 1 ) {\n\t\t\twhile ( this._pendingChanges.length ) {\n\t\t\t\tthis._pendingChanges[ 0 ]();\n\t\t\t\tthis._pendingChanges.shift();\n\t\t\t}\n\n\t\t\tthis.fire( 'changesDone' );\n\t\t}\n\t}\n\n\t/**\n\t * Returns top-level root by its name.\n\t *\n\t * @param {String} [name='main'] Unique root name.\n\t * @returns {module:engine/model/rootelement~RootElement} Root registered under given name.\n\t */\n\tgetRoot( name = 'main' ) {\n\t\tif ( !this.roots.has( name ) ) {\n\t\t\t/**\n\t\t\t * Root with specified name does not exist.\n\t\t\t *\n\t\t\t * @error document-getRoot-root-not-exist\n\t\t\t * @param {String} name\n\t\t\t */\n\t\t\tthrow new CKEditorError(\n\t\t\t\t'model-document-getRoot-root-not-exist: Root with specified name does not exist.',\n\t\t\t\t{ name: name }\n\t\t\t);\n\t\t}\n\n\t\treturn this.roots.get( name );\n\t}\n\n\t/**\n\t * Checks if root with given name is defined.\n\t *\n\t * @param {String} name Name of root to check.\n\t * @returns {Boolean}\n\t */\n\thasRoot( name ) {\n\t\treturn this.roots.has( name );\n\t}\n\n\t/**\n\t * Returns array with names of all roots (without the {@link #graveyard}) added to the document.\n\t *\n\t * @returns {Array.<String>} Roots names.\n\t */\n\tgetRootNames() {\n\t\treturn Array.from( this.roots.keys() ).filter( ( name ) => name != graveyardName );\n\t}\n\n\t/**\n\t * Basing on given `position`, finds and returns a {@link module:engine/model/range~Range Range} instance that is\n\t * nearest to that `position` and is a correct range for selection.\n\t *\n\t * Correct selection range might be collapsed - when it's located in position where text node can be placed.\n\t * Non-collapsed range is returned when selection can be placed around element marked as \"object\" in\n\t * {@link module:engine/model/schema~Schema schema}.\n\t *\n\t * Direction of searching for nearest correct selection range can be specified as:\n\t * * `both` - searching will be performed in both ways,\n\t * * `forward` - searching will be performed only forward,\n\t * * `backward` - searching will be performed only backward.\n\t *\n\t * When valid selection range cannot be found, `null` is returned.\n\t *\n\t * @param {module:engine/model/position~Position} position Reference position where new selection range should be looked for.\n\t * @param {'both'|'forward'|'backward'} [direction='both'] Search direction.\n\t * @returns {module:engine/model/range~Range|null} Nearest selection range or `null` if one cannot be found.\n\t */\n\tgetNearestSelectionRange( position, direction = 'both' ) {\n\t\t// Return collapsed range if provided position is valid.\n\t\tif ( this.schema.check( { name: '$text', inside: position } ) ) {\n\t\t\treturn new Range( position );\n\t\t}\n\n\t\tlet backwardWalker;\n\t\tlet forwardWalker;\n\n\t\tif ( direction == 'both' || direction == 'backward' ) {\n\t\t\tbackwardWalker = new TreeWalker( { startPosition: position, direction: 'backward' } );\n\t\t}\n\n\t\tif ( direction == 'both' || direction == 'forward' ) {\n\t\t\tforwardWalker = new TreeWalker( { startPosition: position } );\n\t\t}\n\n\t\tfor ( let data of combineWalkers( backwardWalker, forwardWalker ) ) {\n\t\t\tconst type = ( data.walker == backwardWalker ? 'elementEnd' : 'elementStart' );\n\t\t\tconst value = data.value;\n\n\t\t\tif ( value.type == type && this.schema.objects.has( value.item.name ) ) {\n\t\t\t\treturn Range.createOn( value.item );\n\t\t\t}\n\n\t\t\tif ( this.schema.check( { name: '$text', inside: value.nextPosition } ) ) {\n\t\t\t\treturn new Range( value.nextPosition );\n\t\t\t}\n\t\t}\n\n\t\treturn null;\n\t}\n\n\t/**\n\t * Custom toJSON method to solve child-parent circular dependencies.\n\t *\n\t * @returns {Object} Clone of this object with the document property changed to string.\n\t */\n\ttoJSON() {\n\t\tconst json = clone( this );\n\n\t\t// Due to circular references we need to remove parent reference.\n\t\tjson.selection = '[engine.model.LiveSelection]';\n\n\t\treturn json;\n\t}\n\n\t/**\n\t * Returns default root for this document which is either the first root that was added to the the document using\n\t * {@link #createRoot} or the {@link #graveyard graveyard root} if no other roots were created.\n\t *\n\t * @protected\n\t * @returns {module:engine/model/rootelement~RootElement} The default root for this document.\n\t */\n\t_getDefaultRoot() {\n\t\tfor ( let root of this.roots.values() ) {\n\t\t\tif ( root !== this.graveyard ) {\n\t\t\t\treturn root;\n\t\t\t}\n\t\t}\n\n\t\treturn this.graveyard;\n\t}\n\n\t/**\n\t * Returns a default range for this selection. The default range is a collapsed range that starts and ends\n\t * at the beginning of this selection's document's {@link #_getDefaultRoot default root}.\n\t *\n\t * @protected\n\t * @returns {module:engine/model/range~Range}\n\t */\n\t_getDefaultRange() {\n\t\tconst defaultRoot = this._getDefaultRoot();\n\n\t\t// Find the first position where the selection can be put.\n\t\tconst position = new Position( defaultRoot, [ 0 ] );\n\t\tconst nearestRange = this.getNearestSelectionRange( position );\n\n\t\t// If valid selection range is not found - return range collapsed at the beginning of the root.\n\t\treturn nearestRange || new Range( position );\n\t}\n\n\t/**\n\t * Checks whether given {@link module:engine/model/range~Range range} is a valid range for\n\t * {@link #selection document's selection}.\n\t *\n\t * @private\n\t * @param {module:engine/model/range~Range} range Range to check.\n\t * @returns {Boolean} `true` if `range` is valid, `false` otherwise.\n\t */\n\t_validateSelectionRange( range ) {\n\t\treturn validateTextNodePosition( range.start ) && validateTextNodePosition( range.end );\n\t}\n\n\t/**\n\t * Fired when document changes by applying an operation.\n\t *\n\t * There are 5 types of change:\n\t *\n\t * * 'insert' when nodes are inserted,\n\t * * 'remove' when nodes are removed,\n\t * * 'reinsert' when remove is undone,\n\t * * 'move' when nodes are moved,\n\t * * 'addAttribute' when attributes are added,\n\t * * 'removeAttribute' when attributes are removed,\n\t * * 'changeAttribute' when attributes change,\n\t * * 'addRootAttribute' when attribute for root is added,\n\t * * 'removeRootAttribute' when attribute for root is removed,\n\t * * 'changeRootAttribute' when attribute for root changes.\n\t *\n\t * @event change\n\t * @param {String} type Change type, possible option: 'insert', 'remove', 'reinsert', 'move', 'attribute'.\n\t * @param {Object} data Additional information about the change.\n\t * @param {module:engine/model/range~Range} data.range Range in model containing changed nodes. Note that the range state is\n\t * after changes has been done, i.e. for 'remove' the range will be in the {@link #graveyard graveyard root}.\n\t * This is `undefined` for \"...root...\" types.\n\t * @param {module:engine/model/position~Position} [data.sourcePosition] Change source position.\n\t * Exists for 'remove', 'reinsert' and 'move'.\n\t * Note that this position state is before changes has been done, i.e. for 'reinsert' the source position will be in the\n\t * {@link #graveyard graveyard root}.\n\t * @param {String} [data.key] Only for attribute types. Key of changed / inserted / removed attribute.\n\t * @param {*} [data.oldValue] Only for 'removeAttribute', 'removeRootAttribute', 'changeAttribute' or\n\t * 'changeRootAttribute' type.\n\t * @param {*} [data.newValue] Only for 'addAttribute', 'addRootAttribute', 'changeAttribute' or\n\t * 'changeRootAttribute' type.\n\t * @param {module:engine/model/rootelement~RootElement} [changeInfo.root] Root element which attributes got changed. This is defined\n\t * only for root types.\n\t * @param {module:engine/model/batch~Batch} batch A {@link module:engine/model/batch~Batch batch}\n\t * of changes which this change is a part of.\n\t */\n\n\t/**\n\t * Fired when all queued document changes are done. See {@link #enqueueChanges}.\n\t *\n\t * @event changesDone\n\t */\n}\n\nmix( Document, EmitterMixin );\n\n// Checks whether given range boundary position is valid for document selection, meaning that is not between\n// unicode surrogate pairs or base character and combining marks.\nfunction validateTextNodePosition( rangeBoundary ) {\n\tconst textNode = rangeBoundary.textNode;\n\n\tif ( textNode ) {\n\t\tconst data = textNode.data;\n\t\tconst offset = rangeBoundary.offset - textNode.startOffset;\n\n\t\treturn !isInsideSurrogatePair( data, offset ) && !isInsideCombinedSymbol( data, offset );\n\t}\n\n\treturn true;\n}\n\n// Generator function returning values from provided walkers, switching between them at each iteration. If only one walker\n// is provided it will return data only from that walker.\n//\n// @param {module:engine/module/treewalker~TreeWalker} [backward] Walker iterating in backward direction.\n// @param {module:engine/module/treewalker~TreeWalker} [forward] Walker iterating in forward direction.\n// @returns {Iterable.<Object>} Object returned at each iteration contains `value` and `walker` (informing which walker returned\n// given value) fields.\nfunction *combineWalkers( backward, forward ) {\n\tlet done = false;\n\n\twhile ( !done ) {\n\t\tdone = true;\n\n\t\tif ( backward ) {\n\t\t\tconst step = backward.next();\n\n\t\t\tif ( !step.done ) {\n\t\t\t\tdone = false;\n\t\t\t\tyield {\n\t\t\t\t\twalker: backward,\n\t\t\t\t\tvalue: step.value\n\t\t\t\t};\n\t\t\t}\n\t\t}\n\n\t\tif ( forward ) {\n\t\t\tconst step = forward.next();\n\n\t\t\tif ( !step.done ) {\n\t\t\t\tdone = false;\n\t\t\t\tyield {\n\t\t\t\t\twalker: forward,\n\t\t\t\t\tvalue: step.value\n\t\t\t\t};\n\t\t\t}\n\t\t}\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/document.js\n// module id = 309\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/history\n */\n\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/**\n * `History` keeps the track of all the deltas applied to the {@link module:engine/model/document~Document document}. Deltas stored in\n * `History` might get updated, split into more deltas or even removed. This is used mostly to compress history, instead\n * of keeping all deltas in a state in which they were applied.\n *\n * **Note:** deltas kept in `History` should be used only to transform deltas. It's not advised to use `History` to get\n * original delta basing on it's {@link module:engine/model/delta/delta~Delta#baseVersion baseVersion}. Also, after transforming a\n * delta by deltas from `History`,\n * fix it's base version accordingly (set it to {@link module:engine/model/document~Document#version document version}).\n */\nexport default class History {\n\t/**\n\t * Creates an empty History instance.\n\t */\n\tconstructor() {\n\t\t/**\n\t\t * Deltas added to the history.\n\t\t *\n\t\t * @protected\n\t\t * @member {Array.<module:engine/model/delta/delta~Delta>} module:engine/model/history~History#_deltas\n\t\t */\n\t\tthis._deltas = [];\n\n\t\t/**\n\t\t * Helper structure that maps added delta's base version to the index in {@link module:engine/model/history~History#_deltas}\n\t\t * at which the delta was added.\n\t\t *\n\t\t * @protected\n\t\t * @member {Map} module:engine/model/history~History#_historyPoints\n\t\t */\n\t\tthis._historyPoints = new Map();\n\t}\n\n\t/**\n\t * Adds delta to the history.\n\t *\n\t * @param {module:engine/model/delta/delta~Delta} delta Delta to add.\n\t */\n\taddDelta( delta ) {\n\t\tif ( delta.operations.length > 0 && !this._historyPoints.has( delta.baseVersion ) ) {\n\t\t\tconst index = this._deltas.length;\n\n\t\t\tthis._deltas[ index ] = delta;\n\t\t\tthis._historyPoints.set( delta.baseVersion, index );\n\t\t}\n\t}\n\n\t/**\n\t * Returns deltas added to the history.\n\t *\n\t * @param {Number} [from=0] Base version from which deltas should be returned (inclusive). Defaults to `0`, which means\n\t * that deltas from the first one will be returned.\n\t * @param {Number} [to=Number.POSITIVE_INFINITY] Base version up to which deltas should be returned (exclusive).\n\t * Defaults to `Number.POSITIVE_INFINITY` which means that deltas up to the last one will be returned.\n\t * @returns {Iterator.<module:engine/model/delta/delta~Delta>} Deltas added to the history.\n\t */\n\t*getDeltas( from = 0, to = Number.POSITIVE_INFINITY ) {\n\t\t// No deltas added, nothing to yield.\n\t\tif ( this._deltas.length === 0 ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Will throw if base version is incorrect.\n\t\tlet fromIndex = this._getIndex( from );\n\n\t\t// Base version is too low or too high and is not found in history.\n\t\tif ( fromIndex == -1 ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// We have correct `fromIndex` so let's iterate starting from it.\n\t\twhile ( fromIndex < this._deltas.length ) {\n\t\t\tconst delta = this._deltas[ fromIndex++ ];\n\n\t\t\tif ( delta.baseVersion >= to ) {\n\t\t\t\tbreak;\n\t\t\t}\n\n\t\t\tyield delta;\n\t\t}\n\t}\n\n\t/**\n\t * Returns one or more deltas from history that bases on given `baseVersion`. Most often it will be just\n\t * one delta, but if that delta got updated by multiple deltas, all of those updated deltas will be returned.\n\t *\n\t * @see module:engine/model/history~History#updateDelta\n\t * @param {Number} baseVersion Base version of the delta to retrieve.\n\t * @returns {Array.<module:engine/model/delta/delta~Delta>|null} Delta with given base version or null if no such delta is in history.\n\t */\n\tgetDelta( baseVersion ) {\n\t\tlet index = this._historyPoints.get( baseVersion );\n\n\t\tif ( index === undefined ) {\n\t\t\treturn null;\n\t\t}\n\n\t\tconst deltas = [];\n\n\t\tfor ( index; index < this._deltas.length; index++ ) {\n\t\t\tconst delta = this._deltas[ index ];\n\n\t\t\tif ( delta.baseVersion != baseVersion ) {\n\t\t\t\tbreak;\n\t\t\t}\n\n\t\t\tdeltas.push( delta );\n\t\t}\n\n\t\treturn deltas.length === 0 ? null : deltas;\n\t}\n\n\t/**\n\t * Removes delta from the history. This happens i.e., when a delta is undone by another delta. Both undone delta and\n\t * undoing delta should be removed so they won't have an impact on transforming other deltas.\n\t *\n\t * **Note:** using this method does not change the state of {@link module:engine/model/document~Document model}. It just affects\n\t * the state of `History`.\n\t *\n\t * **Note:** when some deltas are removed, deltas between them should probably get updated. See\n\t * {@link module:engine/model/history~History#updateDelta}.\n\t *\n\t * **Note:** if delta with `baseVersion` got {@link module:engine/model/history~History#updateDelta updated} by multiple\n\t * deltas, all updated deltas will be removed.\n\t *\n\t * @param {Number} baseVersion Base version of a delta to be removed.\n\t */\n\tremoveDelta( baseVersion ) {\n\t\tthis.updateDelta( baseVersion, [] );\n\t}\n\n\t/**\n\t * Substitutes delta in history by one or more given deltas.\n\t *\n\t * **Note:** if delta with `baseVersion` was already updated by multiple deltas, all updated deltas will be removed\n\t * and new deltas will be inserted at their position.\n\t *\n\t * **Note:** removed delta won't get updated.\n\t *\n\t * @param {Number} baseVersion Base version of a delta to update.\n\t * @param {Iterable.<module:engine/model/delta/delta~Delta>} updatedDeltas Deltas to be inserted in place of updated delta.\n\t */\n\tupdateDelta( baseVersion, updatedDeltas ) {\n\t\tconst deltas = this.getDelta( baseVersion );\n\n\t\t// If there are no deltas, stop executing function as there is nothing to update.\n\t\tif ( deltas === null ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Make sure that every updated delta has correct `baseVersion`.\n\t\t// This is crucial for algorithms in `History` and algorithms using `History`.\n\t\tfor ( let delta of updatedDeltas ) {\n\t\t\tdelta.baseVersion = baseVersion;\n\t\t}\n\n\t\t// Put updated deltas in place of old deltas.\n\t\tthis._deltas.splice( this._getIndex( baseVersion ), deltas.length, ...updatedDeltas );\n\n\t\t// Update history points.\n\t\tconst changeBy = updatedDeltas.length - deltas.length;\n\n\t\tfor ( let key of this._historyPoints.keys() ) {\n\t\t\tif ( key > baseVersion ) {\n\t\t\t\tthis._historyPoints.set( key, this._historyPoints.get( key ) + changeBy );\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Gets an index in {@link module:engine/model/history~History#_deltas} where delta with given `baseVersion` is added.\n\t *\n\t * @private\n\t * @param {Number} baseVersion Base version of delta.\n\t */\n\t_getIndex( baseVersion ) {\n\t\tlet index = this._historyPoints.get( baseVersion );\n\n\t\t// Base version not found - it is either too high or too low, or is in the middle of delta.\n\t\tif ( index === undefined ) {\n\t\t\tconst lastDelta = this._deltas[ this._deltas.length - 1 ];\n\t\t\tconst nextBaseVersion = lastDelta.baseVersion + lastDelta.operations.length;\n\n\t\t\tif ( baseVersion < 0 || baseVersion >= nextBaseVersion ) {\n\t\t\t\t// Base version is too high or too low - it's acceptable situation.\n\t\t\t\t// Return -1 because `baseVersion` was correct.\n\t\t\t\treturn -1;\n\t\t\t}\n\n\t\t\t/**\n\t\t\t * Given base version points to the middle of a delta.\n\t\t\t *\n\t\t\t * @error history-wrong-version\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'model-history-wrong-version: Given base version points to the middle of a delta.' );\n\t\t}\n\n\t\treturn index;\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/history.js\n// module id = 310\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/liveselection\n */\n\nimport Position from './position';\nimport Range from './range';\nimport LiveRange from './liverange';\nimport Text from './text';\nimport TextProxy from './textproxy';\nimport toMap from '@ckeditor/ckeditor5-utils/src/tomap';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\nimport log from '@ckeditor/ckeditor5-utils/src/log';\n\nimport Selection from './selection';\n\nconst storePrefix = 'selection:';\n\nconst attrOpTypes = new Set(\n\t[ 'addAttribute', 'removeAttribute', 'changeAttribute', 'addRootAttribute', 'removeRootAttribute', 'changeRootAttribute' ]\n);\n\n/**\n * `LiveSelection` is a type of {@link module:engine/model/selection~Selection selection} that listens to changes on a\n * {@link module:engine/model/document~Document document} and has it ranges updated accordingly. Internal implementation of this\n * mechanism bases on {@link module:engine/model/liverange~LiveRange live ranges}.\n *\n * Differences between {@link module:engine/model/selection~Selection} and `LiveSelection` are:\n * * there is always a range in `LiveSelection` - even if no ranges were added there is a\n * {@link module:engine/model/liveselection~LiveSelection#_getDefaultRange \"default range\"} present in the selection,\n * * ranges added to this selection updates automatically when the document changes,\n * * attributes of `LiveSelection` are updated automatically according to selection ranges.\n *\n * Since `LiveSelection` uses {@link module:engine/model/liverange~LiveRange live ranges}\n * and is updated when {@link module:engine/model/document~Document document}\n * changes, it cannot be set on {@link module:engine/model/node~Node nodes}\n * that are inside {@link module:engine/model/documentfragment~DocumentFragment document fragment}.\n * If you need to represent a selection in document fragment,\n * use {@link module:engine/model/selection~Selection Selection class} instead.\n *\n * @extends module:engine/model/selection~Selection\n */\nexport default class LiveSelection extends Selection {\n\t/**\n\t * Creates an empty live selection for given {@link module:engine/model/document~Document}.\n\t *\n\t * @param {module:engine/model/document~Document} document Document which owns this selection.\n\t */\n\tconstructor( document ) {\n\t\tsuper();\n\n\t\t/**\n\t\t * Document which owns this selection.\n\t\t *\n\t\t * @protected\n\t\t * @member {module:engine/model/document~Document} module:engine/model/liveselection~LiveSelection#_document\n\t\t */\n\t\tthis._document = document;\n\n\t\t/**\n\t\t * Keeps mapping of attribute name to priority with which the attribute got modified (added/changed/removed)\n\t\t * last time. Possible values of priority are: `'low'` and `'normal'`.\n\t\t *\n\t\t * Priorities are used by internal `LiveSelection` mechanisms. All attributes set using `LiveSelection`\n\t\t * attributes API are set with `'normal'` priority.\n\t\t *\n\t\t * @private\n\t\t * @member {Map} module:engine/model/liveselection~LiveSelection#_attributePriority\n\t\t */\n\t\tthis._attributePriority = new Map();\n\n\t\t// Whenever attribute operation is performed on document, update selection attributes.\n\t\t// This is not the most efficient way to update selection attributes, but should be okay for now.\n\t\tthis.listenTo( this._document, 'change', ( evt, type ) => {\n\t\t\tif ( attrOpTypes.has( type ) ) {\n\t\t\t\tthis._updateAttributes( false );\n\t\t\t}\n\t\t} );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tget isCollapsed() {\n\t\tconst length = this._ranges.length;\n\n\t\treturn length === 0 ? true : super.isCollapsed;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tget anchor() {\n\t\treturn super.anchor || this._document._getDefaultRange().start;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tget focus() {\n\t\treturn super.focus || this._document._getDefaultRange().start;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tget rangeCount() {\n\t\treturn this._ranges.length ? this._ranges.length : 1;\n\t}\n\n\t/**\n\t * Unbinds all events previously bound by document selection.\n\t */\n\tdestroy() {\n\t\tfor ( let i = 0; i < this._ranges.length; i++ ) {\n\t\t\tthis._ranges[ i ].detach();\n\t\t}\n\n\t\tthis.stopListening();\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\t*getRanges() {\n\t\tif ( this._ranges.length ) {\n\t\t\tyield *super.getRanges();\n\t\t} else {\n\t\t\tyield this._document._getDefaultRange();\n\t\t}\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tgetFirstRange() {\n\t\treturn super.getFirstRange() || this._document._getDefaultRange();\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tgetLastRange() {\n\t\treturn super.getLastRange() || this._document._getDefaultRange();\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\taddRange( range, isBackward = false ) {\n\t\tsuper.addRange( range, isBackward );\n\t\tthis.refreshAttributes();\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tremoveAllRanges() {\n\t\tsuper.removeAllRanges();\n\t\tthis.refreshAttributes();\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tsetRanges( newRanges, isLastBackward = false ) {\n\t\tsuper.setRanges( newRanges, isLastBackward );\n\t\tthis.refreshAttributes();\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tsetAttribute( key, value ) {\n\t\t// Store attribute in parent element if the selection is collapsed in an empty node.\n\t\tif ( this.isCollapsed && this.anchor.parent.childCount === 0 ) {\n\t\t\tthis._storeAttribute( key, value );\n\t\t}\n\n\t\tif ( this._setAttribute( key, value ) ) {\n\t\t\t// Fire event with exact data.\n\t\t\tconst attributeKeys = [ key ];\n\t\t\tthis.fire( 'change:attribute', { attributeKeys, directChange: true } );\n\t\t}\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tremoveAttribute( key ) {\n\t\t// Remove stored attribute from parent element if the selection is collapsed in an empty node.\n\t\tif ( this.isCollapsed && this.anchor.parent.childCount === 0 ) {\n\t\t\tthis._removeStoredAttribute( key );\n\t\t}\n\n\t\tif ( this._removeAttribute( key ) ) {\n\t\t\t// Fire event with exact data.\n\t\t\tconst attributeKeys = [ key ];\n\t\t\tthis.fire( 'change:attribute', { attributeKeys, directChange: true } );\n\t\t}\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tsetAttributesTo( attrs ) {\n\t\tattrs = toMap( attrs );\n\n\t\tif ( this.isCollapsed && this.anchor.parent.childCount === 0 ) {\n\t\t\tthis._setStoredAttributesTo( attrs );\n\t\t}\n\n\t\tconst changed = this._setAttributesTo( attrs );\n\n\t\tif ( changed.size > 0 ) {\n\t\t\t// Fire event with exact data (fire only if anything changed).\n\t\t\tconst attributeKeys = Array.from( changed );\n\t\t\tthis.fire( 'change:attribute', { attributeKeys, directChange: true } );\n\t\t}\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tclearAttributes() {\n\t\tthis.setAttributesTo( [] );\n\t}\n\n\t/**\n\t * Removes all attributes from the selection and sets attributes according to the surrounding nodes.\n\t */\n\trefreshAttributes() {\n\t\tthis._updateAttributes( true );\n\t}\n\n\t/**\n\t * Creates and returns an instance of `LiveSelection` that is a clone of given selection, meaning that it has same\n\t * ranges and same direction as this selection.\n\t *\n\t * @params {module:engine/model/selection~Selection} otherSelection Selection to be cloned.\n\t * @returns {module:engine/model/liveselection~LiveSelection} `Selection` instance that is a clone of given selection.\n\t */\n\tstatic createFromSelection( otherSelection ) {\n\t\tconst selection = new this( otherSelection._document );\n\t\tselection.setTo( otherSelection );\n\n\t\treturn selection;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\t_popRange() {\n\t\tthis._ranges.pop().detach();\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\t_pushRange( range ) {\n\t\tconst liveRange = this._prepareRange( range );\n\n\t\t// `undefined` is returned when given `range` is in graveyard root.\n\t\tif ( liveRange ) {\n\t\t\tthis._ranges.push( liveRange );\n\t\t}\n\t}\n\n\t/**\n\t * Prepares given range to be added to selection. Checks if it is correct,\n\t * converts it to {@link module:engine/model/liverange~LiveRange LiveRange}\n\t * and sets listeners listening to the range's change event.\n\t *\n\t * @private\n\t * @param {module:engine/model/range~Range} range\n\t */\n\t_prepareRange( range ) {\n\t\tif ( !( range instanceof Range ) ) {\n\t\t\t/**\n\t\t\t * Trying to add an object that is not an instance of Range.\n\t\t\t *\n\t\t\t * @error model-selection-added-not-range\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'model-selection-added-not-range: Trying to add an object that is not an instance of Range.' );\n\t\t}\n\n\t\tif ( range.root == this._document.graveyard ) {\n\t\t\t/**\n\t\t\t * Trying to add a Range that is in the graveyard root. Range rejected.\n\t\t\t *\n\t\t\t * @warning model-selection-range-in-graveyard\n\t\t\t */\n\t\t\tlog.warn( 'model-selection-range-in-graveyard: Trying to add a Range that is in the graveyard root. Range rejected.' );\n\n\t\t\treturn;\n\t\t}\n\n\t\tthis._checkRange( range );\n\n\t\tconst liveRange = LiveRange.createFromRange( range );\n\t\tthis.listenTo( liveRange, 'change', ( evt, oldRange ) => {\n\t\t\tif ( liveRange.root == this._document.graveyard ) {\n\t\t\t\tthis._fixGraveyardSelection( liveRange, oldRange );\n\t\t\t}\n\n\t\t\tthis.fire( 'change:range', { directChange: false } );\n\t\t} );\n\n\t\treturn liveRange;\n\t}\n\n\t/**\n\t * Updates this selection attributes according to its ranges and the {@link module:engine/model/document~Document model document}.\n\t *\n\t * @protected\n\t * @param {Boolean} clearAll\n\t * @fires change:attribute\n\t */\n\t_updateAttributes( clearAll ) {\n\t\tconst newAttributes = toMap( this._getSurroundingAttributes() );\n\t\tconst oldAttributes = toMap( this.getAttributes() );\n\n\t\tif ( clearAll ) {\n\t\t\t// If `clearAll` remove all attributes and reset priorities.\n\t\t\tthis._attributePriority = new Map();\n\t\t\tthis._attrs = new Map();\n\t\t} else {\n\t\t\t// If not, remove only attributes added with `low` priority.\n\t\t\tfor ( let [ key, priority ] of this._attributePriority ) {\n\t\t\t\tif ( priority == 'low' ) {\n\t\t\t\t\tthis._attrs.delete( key );\n\t\t\t\t\tthis._attributePriority.delete( key );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\tthis._setAttributesTo( newAttributes, false );\n\n\t\t// Let's evaluate which attributes really changed.\n\t\tconst changed = [];\n\n\t\t// First, loop through all attributes that are set on selection right now.\n\t\t// Check which of them are different than old attributes.\n\t\tfor ( let [ newKey, newValue ] of this.getAttributes() ) {\n\t\t\tif ( !oldAttributes.has( newKey ) || oldAttributes.get( newKey ) !== newValue ) {\n\t\t\t\tchanged.push( newKey );\n\t\t\t}\n\t\t}\n\n\t\t// Then, check which of old attributes got removed.\n\t\tfor ( let [ oldKey ] of oldAttributes ) {\n\t\t\tif ( !this.hasAttribute( oldKey ) ) {\n\t\t\t\tchanged.push( oldKey );\n\t\t\t}\n\t\t}\n\n\t\t// Fire event with exact data (fire only if anything changed).\n\t\tif ( changed.length > 0 ) {\n\t\t\tthis.fire( 'change:attribute', { attributeKeys: changed, directChange: false } );\n\t\t}\n\t}\n\n\t/**\n\t * Generates and returns an attribute key for selection attributes store, basing on original attribute key.\n\t *\n\t * @protected\n\t * @param {String} key Attribute key to convert.\n\t * @returns {String} Converted attribute key, applicable for selection store.\n\t */\n\tstatic _getStoreAttributeKey( key ) {\n\t\treturn storePrefix + key;\n\t}\n\n\t/**\n\t * Internal method for setting `LiveSelection` attribute. Supports attribute priorities (through `directChange`\n\t * parameter).\n\t *\n\t * @private\n\t * @param {String} key Attribute key.\n\t * @param {*} value Attribute value.\n\t * @param {Boolean} [directChange=true] `true` if the change is caused by `Selection` API, `false` if change\n\t * is caused by `Batch` API.\n\t * @returns {Boolean} Whether value has changed.\n\t */\n\t_setAttribute( key, value, directChange = true ) {\n\t\tconst priority = directChange ? 'normal' : 'low';\n\n\t\tif ( priority == 'low' && this._attributePriority.get( key ) == 'normal' ) {\n\t\t\t// Priority too low.\n\t\t\treturn false;\n\t\t}\n\n\t\tconst oldValue = super.getAttribute( key );\n\n\t\t// Don't do anything if value has not changed.\n\t\tif ( oldValue === value ) {\n\t\t\treturn false;\n\t\t}\n\n\t\tthis._attrs.set( key, value );\n\n\t\t// Update priorities map.\n\t\tthis._attributePriority.set( key, priority );\n\n\t\treturn true;\n\t}\n\n\t/**\n\t * Internal method for removing `LiveSelection` attribute. Supports attribute priorities (through `directChange`\n\t * parameter).\n\t *\n\t * @private\n\t * @param {String} key Attribute key.\n\t * @param {Boolean} [directChange=true] `true` if the change is caused by `Selection` API, `false` if change\n\t * is caused by `Batch` API.\n\t * @returns {Boolean} Whether attribute was removed. May not be true if such attributes didn't exist or the\n\t * existing attribute had higher priority.\n\t */\n\t_removeAttribute( key, directChange = true ) {\n\t\tconst priority = directChange ? 'normal' : 'low';\n\n\t\tif ( priority == 'low' && this._attributePriority.get( key ) == 'normal' ) {\n\t\t\t// Priority too low.\n\t\t\treturn false;\n\t\t}\n\n\t\t// Don't do anything if value has not changed.\n\t\tif ( !super.hasAttribute( key ) ) {\n\t\t\treturn false;\n\t\t}\n\n\t\tthis._attrs.delete( key );\n\n\t\t// Update priorities map.\n\t\tthis._attributePriority.set( key, priority );\n\n\t\treturn true;\n\t}\n\n\t/**\n\t * Internal method for setting multiple `LiveSelection` attributes. Supports attribute priorities (through\n\t * `directChange` parameter).\n\t *\n\t * @private\n\t * @param {Iterable|Object} attrs Iterable object containing attributes to be set.\n\t * @param {Boolean} [directChange=true] `true` if the change is caused by `Selection` API, `false` if change\n\t * is caused by `Batch` API.\n\t * @returns {Set.<String>} Changed attribute keys.\n\t */\n\t_setAttributesTo( attrs, directChange = true ) {\n\t\tconst changed = new Set();\n\n\t\tfor ( let [ oldKey, oldValue ] of this.getAttributes() ) {\n\t\t\t// Do not remove attribute if attribute with same key and value is about to be set.\n\t\t\tif ( attrs.get( oldKey ) === oldValue ) {\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\t// Attribute still might not get removed because of priorities.\n\t\t\tif ( this._removeAttribute( oldKey, directChange ) ) {\n\t\t\t\tchanged.add( oldKey );\n\t\t\t}\n\t\t}\n\n\t\tfor ( let [ key, value ] of attrs ) {\n\t\t\t// Attribute may not be set because of attributes or because same key/value is already added.\n\t\t\tconst gotAdded = this._setAttribute( key, value, directChange );\n\n\t\t\tif ( gotAdded ) {\n\t\t\t\tchanged.add( key );\n\t\t\t}\n\t\t}\n\n\t\treturn changed;\n\t}\n\n\t/**\n\t * Returns an iterator that iterates through all selection attributes stored in current selection's parent.\n\t *\n\t * @private\n\t * @returns {Iterable.<*>}\n\t */\n\t*_getStoredAttributes() {\n\t\tconst selectionParent = this.getFirstPosition().parent;\n\n\t\tif ( this.isCollapsed && selectionParent.childCount === 0 ) {\n\t\t\tfor ( let key of selectionParent.getAttributeKeys() ) {\n\t\t\t\tif ( key.indexOf( storePrefix ) === 0 ) {\n\t\t\t\t\tconst realKey = key.substr( storePrefix.length );\n\n\t\t\t\t\tyield [ realKey, selectionParent.getAttribute( key ) ];\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Removes attribute with given key from attributes stored in current selection's parent node.\n\t *\n\t * @private\n\t * @param {String} key Key of attribute to remove.\n\t */\n\t_removeStoredAttribute( key ) {\n\t\tconst storeKey = LiveSelection._getStoreAttributeKey( key );\n\n\t\tthis._document.batch().removeAttribute( this.anchor.parent, storeKey );\n\t}\n\n\t/**\n\t * Stores given attribute key and value in current selection's parent node.\n\t *\n\t * @private\n\t * @param {String} key Key of attribute to set.\n\t * @param {*} value Attribute value.\n\t */\n\t_storeAttribute( key, value ) {\n\t\tconst storeKey = LiveSelection._getStoreAttributeKey( key );\n\n\t\tthis._document.batch().setAttribute( this.anchor.parent, storeKey, value );\n\t}\n\n\t/**\n\t * Sets selection attributes stored in current selection's parent node to given set of attributes.\n\t *\n\t * @private\n\t * @param {Iterable|Object} attrs Iterable object containing attributes to be set.\n\t */\n\t_setStoredAttributesTo( attrs ) {\n\t\tconst selectionParent = this.anchor.parent;\n\t\tconst batch = this._document.batch();\n\n\t\tfor ( let [ oldKey ] of this._getStoredAttributes() ) {\n\t\t\tconst storeKey = LiveSelection._getStoreAttributeKey( oldKey );\n\n\t\t\tbatch.removeAttribute( selectionParent, storeKey );\n\t\t}\n\n\t\tfor ( let [ key, value ] of attrs ) {\n\t\t\tconst storeKey = LiveSelection._getStoreAttributeKey( key );\n\n\t\t\tbatch.setAttribute( selectionParent, storeKey, value );\n\t\t}\n\t}\n\n\t/**\n\t * Checks model text nodes that are closest to the selection's first position and returns attributes of first\n\t * found element. If there are no text nodes in selection's first position parent, it returns selection\n\t * attributes stored in that parent.\n\t *\n\t * @private\n\t * @returns {Iterable.<*>} Collection of attributes.\n\t */\n\t_getSurroundingAttributes() {\n\t\tconst position = this.getFirstPosition();\n\n\t\tlet attrs = null;\n\n\t\tif ( !this.isCollapsed ) {\n\t\t\t// 1. If selection is a range...\n\t\t\tconst range = this.getFirstRange();\n\n\t\t\t// ...look for a first character node in that range and take attributes from it.\n\t\t\tfor ( let item of range ) {\n\t\t\t\t// This is not an optimal solution because of https://github.com/ckeditor/ckeditor5-engine/issues/454.\n\t\t\t\t// It can be done better by using `break;` instead of checking `attrs === null`.\n\t\t\t\tif ( item.type == 'text' && attrs === null ) {\n\t\t\t\t\tattrs = item.item.getAttributes();\n\t\t\t\t}\n\t\t\t}\n\t\t} else {\n\t\t\t// 2. If the selection is a caret or the range does not contain a character node...\n\n\t\t\tconst nodeBefore = position.textNode ? position.textNode : position.nodeBefore;\n\t\t\tconst nodeAfter = position.textNode ? position.textNode : position.nodeAfter;\n\n\t\t\t// ...look at the node before caret and take attributes from it if it is a character node.\n\t\t\tattrs = getAttrsIfCharacter( nodeBefore );\n\n\t\t\t// 3. If not, look at the node after caret...\n\t\t\tif ( !attrs ) {\n\t\t\t\tattrs = getAttrsIfCharacter( nodeAfter );\n\t\t\t}\n\n\t\t\t// 4. If not, try to find the first character on the left, that is in the same node.\n\t\t\tif ( !attrs ) {\n\t\t\t\tlet node = nodeBefore;\n\n\t\t\t\twhile ( node && !attrs ) {\n\t\t\t\t\tnode = node.previousSibling;\n\t\t\t\t\tattrs = getAttrsIfCharacter( node );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// 5. If not found, try to find the first character on the right, that is in the same node.\n\t\t\tif ( !attrs ) {\n\t\t\t\tlet node = nodeAfter;\n\n\t\t\t\twhile ( node && !attrs ) {\n\t\t\t\t\tnode = node.nextSibling;\n\t\t\t\t\tattrs = getAttrsIfCharacter( node );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// 6. If not found, selection should retrieve attributes from parent.\n\t\t\tif ( !attrs ) {\n\t\t\t\tattrs = this._getStoredAttributes();\n\t\t\t}\n\t\t}\n\n\t\treturn attrs;\n\t}\n\n\t/**\n\t * Fixes a selection range after it ends up in graveyard root.\n\t *\n\t * @private\n\t * @param {module:engine/model/liverange~LiveRange} gyRange The range added in selection, that ended up in graveyard root.\n\t * @param {module:engine/model/range~Range} oldRange The state of that range before it was added to graveyard root.\n\t */\n\t_fixGraveyardSelection( gyRange, oldRange ) {\n\t\tconst gyPath = gyRange.start.path;\n\n\t\tconst newPathLength = oldRange.start.path.length - ( gyPath.length - 2 );\n\t\tconst newPath = oldRange.start.path.slice( 0, newPathLength );\n\t\tnewPath[ newPath.length - 1 ] -= gyPath[ 1 ];\n\n\t\tconst newPosition = new Position( oldRange.root, newPath );\n\t\tlet selectionRange = this._document.getNearestSelectionRange( newPosition );\n\n\t\t// If nearest valid selection range cannot be found - use one created at root beginning.\n\t\tif ( !selectionRange ) {\n\t\t\tselectionRange = new Range( new Position( newPosition.root, [ 0 ] ) );\n\t\t}\n\n\t\tconst newRange = this._prepareRange( selectionRange );\n\t\tconst index = this._ranges.indexOf( gyRange );\n\t\tgyRange.detach();\n\n\t\tthis._ranges.splice( index, 1, newRange );\n\t}\n}\n\n/**\n * @event change:attribute\n */\n\n// Helper function for {@link module:engine/model/liveselection~LiveSelection#_updateAttributes}. It takes model item, checks whether\n// it is a text node (or text proxy) and if so, returns it's attributes. If not, returns `null`.\n//\n// @param {module:engine/model/item~Item|null}  node\n// @returns {Boolean}\nfunction getAttrsIfCharacter( node ) {\n\tif ( node instanceof TextProxy || node instanceof Text ) {\n\t\treturn node.getAttributes();\n\t}\n\n\treturn null;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/liveselection.js\n// module id = 311\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/markercollection\n */\n\nimport LiveRange from './liverange';\nimport Position from './position';\nimport Range from './range';\nimport EmitterMixin from '@ckeditor/ckeditor5-utils/src/emittermixin';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\n\n/**\n * Creates, stores and manages {@link ~Marker markers}.\n *\n * Markers are created by {@link ~MarkerCollection#set setting} a name for a {@link module:engine/model/liverange~LiveRange live range}\n * in `MarkerCollection`. Name is used to group and identify markers. Names have to be unique, but markers can be grouped by\n * using common prefixes, separated with `:`, for example: `user:john` or `search:3`.\n *\n * Since markers are based on {@link module:engine/model/liverange~LiveRange live ranges}, for efficiency reasons, it's\n * best to create and keep at least markers as possible.\n */\nexport default class MarkerCollection {\n\t/**\n\t * Creates a markers collection.\n\t */\n\tconstructor() {\n\t\t/**\n\t\t * Stores {@link ~Marker markers} added to the collection.\n\t\t *\n\t\t * @private\n\t\t * @member {Map} #_markers\n\t\t */\n\t\tthis._markers = new Map();\n\t}\n\n\t/**\n\t * Returns an iterator that iterates over all {@link ~Marker markers} added to the collection.\n\t *\n\t * @returns {Iterator}\n\t */\n\t[ Symbol.iterator ]() {\n\t\treturn this._markers.values();\n\t}\n\n\t/**\n\t * Checks if marker with given `markerName` is in the collection.\n\t *\n\t * @param {String} markerName Marker name.\n\t * @returns {Boolean} `true` if marker with given `markerName` is in the collection, `false` otherwise.\n\t */\n\thas( markerName ) {\n\t\treturn this._markers.has( markerName );\n\t}\n\n\t/**\n\t * Returns {@link ~Marker marker} with given `markerName`.\n\t *\n\t * @param {String} markerName Name of marker to get.\n\t * @returns {module:engine/model/markercollection~Marker|null} Marker with given name or `null` if such marker was\n\t * not added to the collection.\n\t */\n\tget( markerName ) {\n\t\treturn this._markers.get( markerName ) || null;\n\t}\n\n\t/**\n\t * Creates and adds a {@link ~Marker marker} to the `MarkerCollection` with given name on given\n\t * {@link module:engine/model/range~Range range}.\n\t *\n\t * If `MarkerCollection` already had a marker with given name (or {@link ~Marker marker} was passed) and the range to\n\t * set is different, the marker in collection is removed and then new marker is added. If the range was same, nothing\n\t * happens and `false` is returned.\n\t *\n\t * @fires module:engine/model/markercollection~MarkerCollection#event:add\n\t * @fires module:engine/model/markercollection~MarkerCollection#event:remove\n\t * @param {String|module:engine/model/markercollection~Marker} markerOrName Name of marker to add or Marker instance to update.\n\t * @param {module:engine/model/range~Range} range Marker range.\n\t * @returns {module:engine/model/markercollection~Marker} `Marker` instance added to the collection.\n\t */\n\tset( markerOrName, range ) {\n\t\tconst markerName = markerOrName instanceof Marker ? markerOrName.name : markerOrName;\n\t\tconst oldMarker = this._markers.get( markerName );\n\n\t\tif ( oldMarker ) {\n\t\t\tconst oldRange = oldMarker.getRange();\n\n\t\t\tif ( oldRange.isEqual( range ) ) {\n\t\t\t\treturn oldMarker;\n\t\t\t}\n\n\t\t\tthis.remove( markerName );\n\t\t}\n\n\t\tconst liveRange = LiveRange.createFromRange( range );\n\t\tconst marker = new Marker( markerName, liveRange );\n\n\t\tthis._markers.set( markerName, marker );\n\t\tthis.fire( 'add', marker );\n\n\t\treturn marker;\n\t}\n\n\t/**\n\t * Removes given {@link ~Marker marker} or a marker with given name from the `MarkerCollection`.\n\t *\n\t * @param {String} markerOrName Marker or name of a marker to remove.\n\t * @returns {Boolean} `true` if marker was found and removed, `false` otherwise.\n\t */\n\tremove( markerOrName ) {\n\t\tconst markerName = markerOrName instanceof Marker ? markerOrName.name : markerOrName;\n\t\tconst oldMarker = this._markers.get( markerName );\n\n\t\tif ( oldMarker ) {\n\t\t\tthis._markers.delete( markerName );\n\t\t\tthis.fire( 'remove', oldMarker );\n\n\t\t\tthis._destroyMarker( oldMarker );\n\n\t\t\treturn true;\n\t\t}\n\n\t\treturn false;\n\t}\n\n\t/**\n\t * Returns iterator that iterates over all markers, which ranges contain given {@link module:engine/model/position~Position position}.\n\t *\n\t * @param {module:engine/model/position~Position} position\n\t * @returns {Iterator.<module:engine/model/markercollection~Marker>}\n\t */\n\t*getMarkersAtPosition( position ) {\n\t\tfor ( let marker of this ) {\n\t\t\tif ( marker.getRange().containsPosition( position ) ) {\n\t\t\t\tyield marker;\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Destroys markers collection.\n\t */\n\tdestroy() {\n\t\tfor ( let marker of this._markers.values() ) {\n\t\t\tthis._destroyMarker( marker );\n\t\t}\n\n\t\tthis._markers = null;\n\n\t\tthis.stopListening();\n\t}\n\n\t/**\n\t * Iterates over all markers that starts with given `prefix`.\n\t *\n\t *\t\tconst markerFooA = markersCollection.set( 'foo:a', rangeFooA );\n\t *\t\tconst markerFooB = markersCollection.set( 'foo:b', rangeFooB );\n\t *\t\tconst markerBarA = markersCollection.set( 'bar:a', rangeBarA );\n\t *\t\tconst markerFooBarA = markersCollection.set( 'foobar:a', rangeFooBarA );\n\t *\t\tArray.from( markersCollection.getMarkersGroup( 'foo' ) ); // [ markerFooA, markerFooB ]\n\t *\t\tArray.from( markersCollection.getMarkersGroup( 'a' ) ); // []\n\t *\n\t * @param prefix\n\t * @returns {Iterator.<module:engine/model/markercollection~Marker>}\n\t */\n\t*getMarkersGroup( prefix ) {\n\t\tfor ( let marker of this._markers.values() ) {\n\t\t\tif ( marker.name.startsWith( prefix + ':' ) ) {\n\t\t\t\tyield marker;\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Destroys marker.\n\t *\n\t * @private\n\t * @param {module:engine/model/markercollection~Marker} marker Marker to destroy.\n\t */\n\t_destroyMarker( marker ) {\n\t\tmarker.stopListening();\n\t\tmarker._liveRange.detach();\n\t\tmarker._liveRange = null;\n\t}\n\n\t/**\n\t * Fired whenever marker is added to `MarkerCollection`.\n\t *\n\t * @event add\n\t * @param {module:engine/model/markercollection~Marker} The added marker.\n\t */\n\n\t/**\n\t * Fired whenever marker is removed from `MarkerCollection`.\n\t *\n\t * @event remove\n\t * @param {module:engine/model/markercollection~Marker} marker The removed marker.\n\t */\n}\n\nmix( MarkerCollection, EmitterMixin );\n\n/**\n * `Marker` is a continuous parts of model (like a range), is named and represent some kind of information about marked\n * part of model document. In contrary to {@link module:engine/model/node~Node nodes}, which are building blocks of\n * model document tree, markers are not stored directly in document tree. Still, they are document data, by giving\n * additional meaning to the part of a model document between marker start and marker end.\n *\n * In this sense, markers are similar to adding and converting attributes on nodes. The difference is that attribute is\n * connected with a given node (e.g. a character is bold no matter if it gets moved or content around it changes).\n * Markers on the other hand are continuous ranges and are characterised by their start and end position. This means that\n * any character in the marker is marked by the marker. For example, if a character is moved outside of marker it stops being\n * \"special\" and the marker is shrunk. Similarly, when a character is moved into the marker from other place in document\n * model, it starts being \"special\" and the marker is enlarged.\n *\n * Since markers are based on {@link module:engine/model/liverange~LiveRange live ranges}, for efficiency reasons, it's\n * best to create and keep at least markers as possible.\n *\n * Markers can be converted to view by adding appropriate converters for\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:addMarker addMarker} and\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:removeMarker removeMarker}\n * events, or by building converters for {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher}\n * using {@link module:engine/conversion/buildmodelconverter~buildModelConverter model converter builder}.\n *\n * Another upside of markers is that finding marked part of document is fast and easy. Using attributes to mark some nodes\n * and then trying to find that part of document would require traversing whole document tree. Marker gives instant access\n * to the range which it is marking at the moment.\n *\n * `Marker` instances are created and destroyed only by {@link ~MarkerCollection MarkerCollection}.\n */\nclass Marker {\n\t/**\n\t * Creates a marker instance.\n\t *\n\t * @param {String} name Marker name.\n\t * @param {module:engine/model/liverange~LiveRange} liveRange Range marked by the marker.\n\t */\n\tconstructor( name, liveRange ) {\n\t\t/**\n\t\t * Marker name.\n\t\t *\n\t\t * @readonly\n\t\t * @member {String} #name\n\t\t */\n\t\tthis.name = name;\n\n\t\t/**\n\t\t * Range marked by the marker.\n\t\t *\n\t\t * @protected\n\t\t * @member {module:engine/model/liverange~LiveRange} #_liveRange\n\t\t */\n\t\tthis._liveRange = liveRange;\n\n\t\tthis._liveRange.delegate( 'change' ).to( this );\n\t}\n\n\t/**\n\t * Returns current marker start position.\n\t *\n\t * @returns {module:engine/model/position~Position}\n\t */\n\tgetStart() {\n\t\tif ( !this._liveRange ) {\n\t\t\t/**\n\t\t\t * Operating on destroyed marker instance.\n\t\t\t *\n\t\t\t * @error marker-destroyed\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'marker-destroyed: Operating on destroyed marker instance.' );\n\t\t}\n\n\t\treturn Position.createFromPosition( this._liveRange.start );\n\t}\n\n\t/**\n\t * Returns current marker end position.\n\t *\n\t * @returns {module:engine/model/position~Position}\n\t */\n\tgetEnd() {\n\t\tif ( !this._liveRange ) {\n\t\t\t/**\n\t\t\t * Operating on destroyed marker instance.\n\t\t\t *\n\t\t\t * @error marker-destroyed\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'marker-destroyed: Operating on destroyed marker instance.' );\n\t\t}\n\n\t\treturn Position.createFromPosition( this._liveRange.end );\n\t}\n\n\t/**\n\t * Returns a range that represents current state of marker.\n\t *\n\t * Keep in mind that returned value is a {@link module:engine/model/range~Range Range}, not a\n\t * {@link module:engine/model/liverange~LiveRange LiveRange}. This means that it is up-to-date and relevant only\n\t * until next model document change. Do not store values returned by this method. Instead, store {@link ~Marker#name}\n\t * and get `Marker` instance from {@link module:engine/model/markercollection~MarkerCollection MarkerCollection} every\n\t * time there is a need to read marker properties. This will guarantee that the marker has not been removed and\n\t * that it's data is up-to-date.\n\t *\n\t * @returns {module:engine/model/range~Range}\n\t */\n\tgetRange() {\n\t\tif ( !this._liveRange ) {\n\t\t\t/**\n\t\t\t * Operating on destroyed marker instance.\n\t\t\t *\n\t\t\t * @error marker-destroyed\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'marker-destroyed: Operating on destroyed marker instance.' );\n\t\t}\n\n\t\treturn Range.createFromRange( this._liveRange );\n\t}\n\n\t/**\n\t * Fired whenever {@link ~Marker#_liveRange marker range} is changed due to changes on {@link module:engine/model/document~Document}.\n\t * This is actually a delegated {@link module:engine/model/liverange~LiveRange#event:change LiveRange change event}.\n\t *\n\t * When marker is removed from {@link module:engine/model/markercollection~MarkerCollection MarkerCollection},\n\t * all event listeners listening to it should be removed. It is best to do it on\n\t * {@link module:engine/model/markercollection~MarkerCollection#event:remove MarkerCollection remove event}.\n\t *\n\t * @see module:engine/model/liverange~LiveRange#event:change\n\t * @event change\n\t * @param {module:engine/model/range~Range} oldRange Range with start and end position equal to start and end position of\n\t * this marker range before it got changed.\n\t */\n}\n\nmix( Marker, EmitterMixin );\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/markercollection.js\n// module id = 312\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/operation/operationfactory\n */\n\nimport AttributeOperation from '../operation/attributeoperation';\nimport InsertOperation from '../operation/insertoperation';\nimport MarkerOperation from '../operation/markeroperation';\nimport MoveOperation from '../operation/moveoperation';\nimport NoOperation from '../operation/nooperation';\nimport Operation from '../operation/operation';\nimport ReinsertOperation from '../operation/reinsertoperation';\nimport RemoveOperation from '../operation/removeoperation';\nimport RenameOperation from '../operation/renameoperation';\nimport RootAttributeOperation from '../operation/rootattributeoperation';\n\nconst operations = {};\noperations[ AttributeOperation.className ] = AttributeOperation;\noperations[ InsertOperation.className ] = InsertOperation;\noperations[ MarkerOperation.className ] = MarkerOperation;\noperations[ MoveOperation.className ] = MoveOperation;\noperations[ NoOperation.className ] = NoOperation;\noperations[ Operation.className ] = Operation;\noperations[ ReinsertOperation.className ] = ReinsertOperation;\noperations[ RemoveOperation.className ] = RemoveOperation;\noperations[ RenameOperation.className ] = RenameOperation;\noperations[ RootAttributeOperation.className ] = RootAttributeOperation;\n\n/**\n * A factory class for creating operations.\n *\n * @abstract\n */\nexport default class OperationFactory {\n\t/**\n\t * Creates concrete `Operation` object from deserilized object, i.e. from parsed JSON string.\n\t *\n\t * @param {Object} json Deserialized JSON object.\n\t * @param {module:engine/model/document~Document} document Document on which this operation will be applied.\n\t * @returns {module:engine/model/operation/operation~Operation}\n\t */\n\tstatic fromJSON( json, document ) {\n\t\treturn operations[ json.__className ].fromJSON( json, document );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/operation/operationfactory.js\n// module id = 313\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/operation/transform\n */\n\nimport InsertOperation from './insertoperation';\nimport AttributeOperation from './attributeoperation';\nimport RootAttributeOperation from './rootattributeoperation';\nimport RenameOperation from './renameoperation';\nimport MarkerOperation from './markeroperation';\nimport MoveOperation from './moveoperation';\nimport RemoveOperation from './removeoperation';\nimport NoOperation from './nooperation';\nimport Range from '../range';\nimport compareArrays from '@ckeditor/ckeditor5-utils/src/comparearrays';\n\n/**\n * Transforms given {@link module:engine/model/operation/operation~Operation operation}\n * by another {@link module:engine/model/operation/operation~Operation operation}\n * and returns the result of that transformation as an array containing\n * one or more {@link module:engine/model/operation/operation~Operation operations}.\n *\n * Operations work on specified positions, passed to them when they are created.\n * Whenever {@link module:engine/model/document~Document document}\n * changes, we have to reflect those modifications by updating or \"transforming\" operations which are not yet applied.\n * When an operation is transformed, its parameters may change based on the operation by which it is transformed.\n * If the transform-by operation applied any modifications to the Tree Data Model which affect positions or nodes\n * connected with transformed operation, those changes will be reflected in the parameters of the returned operation(s).\n *\n * Whenever the {@link module:engine/model/document~Document document}\n * has different {@link module:engine/model/document~Document#version}\n * than the operation you want to {@link module:engine/model/document~Document#applyOperation apply}, you need to transform that\n * operation by all operations which were already applied to the {@link module:engine/model/document~Document document} and have greater\n * {@link module:engine/model/document~Document#version} than the operation being applied. Transform them in the same order as those\n * operations which were applied. This way all modifications done to the Tree Data Model will be reflected\n * in the operation parameters and the operation will \"operate\" on \"up-to-date\" version of the Tree Data Model.\n * This is mostly the case with Operational Transformations but it might be needed in particular features as well.\n *\n * In some cases, when given operation apply changes to the same nodes as this operation, two or more operations need\n * to be created as one would not be able to reflect the combination of these operations.\n * This is why an array is returned instead of a single object. All returned operations have to be applied\n * (or further transformed) to get an effect which was intended in pre-transformed operation.\n *\n * Sometimes two operations are in conflict. This happens when they modify the same node in a different way, i.e.\n * set different value for the same attribute or move the node into different positions. When this happens,\n * we need to decide which operation is more important. We can't assume that operation `a` or operation `b` is always\n * more important. In Operational Transformations algorithms we often need to get a result of transforming\n * `a` by `b` and also `b` by `a`. In both transformations the same operation has to be the important one. If we assume\n * that first or the second passed operation is always more important we won't be able to solve this case.\n *\n * @external module:engine/model/model.operation\n * @function module:engine/model/operation/transform~transform\n * @param {module:engine/model/operation/operation~Operation} a Operation that will be transformed.\n * @param {module:engine/model/operation/operation~Operation} b Operation to transform by.\n * @param {Boolean} isAMoreImportantThanB Flag indicating whether the operation which will be transformed (`a`) should be treated\n * as more important when resolving conflicts.\n * @returns {Array.<module:engine/model/operation/operation~Operation>} Result of the transformation.\n */\n\nexport default transform;\n\nconst ot = {\n\tInsertOperation: {\n\t\t// Transforms InsertOperation `a` by InsertOperation `b`. Accepts a flag stating whether `a` is more important\n\t\t// than `b` when it comes to resolving conflicts. Returns results as an array of operations.\n\t\tInsertOperation( a, b, isStrong ) {\n\t\t\t// Transformed operations are always new instances, not references to the original operations.\n\t\t\tconst transformed = a.clone();\n\n\t\t\t// Transform insert position by the other operation position.\n\t\t\ttransformed.position = transformed.position._getTransformedByInsertion( b.position, b.nodes.maxOffset, !isStrong );\n\n\t\t\treturn [ transformed ];\n\t\t},\n\n\t\tAttributeOperation: doNotUpdate,\n\n\t\tRootAttributeOperation: doNotUpdate,\n\n\t\tRenameOperation: doNotUpdate,\n\n\t\tMarkerOperation: doNotUpdate,\n\n\t\t// Transforms InsertOperation `a` by MoveOperation `b`. Accepts a flag stating whether `a` is more important\n\t\t// than `b` when it comes to resolving conflicts. Returns results as an array of operations.\n\t\tMoveOperation( a, b, isStrong ) {\n\t\t\tconst transformed = a.clone();\n\n\t\t\t// Transform insert position by the other operation parameters.\n\t\t\ttransformed.position = a.position._getTransformedByMove( b.sourcePosition, b.targetPosition, b.howMany, !isStrong, b.isSticky );\n\n\t\t\treturn [ transformed ];\n\t\t}\n\t},\n\n\tAttributeOperation: {\n\t\t// Transforms AttributeOperation `a` by InsertOperation `b`. Returns results as an array of operations.\n\t\tInsertOperation( a, b ) {\n\t\t\t// Transform this operation's range.\n\t\t\tconst ranges = a.range._getTransformedByInsertion( b.position, b.nodes.maxOffset, true, false );\n\n\t\t\t// Map transformed range(s) to operations and return them.\n\t\t\treturn ranges.reverse().map( ( range ) => {\n\t\t\t\treturn new AttributeOperation( range, a.key, a.oldValue, a.newValue, a.baseVersion );\n\t\t\t} );\n\t\t},\n\n\t\t// Transforms AttributeOperation `a` by AttributeOperation `b`. Accepts a flag stating whether `a` is more important\n\t\t// than `b` when it comes to resolving conflicts. Returns results as an array of operations.\n\t\tAttributeOperation( a, b, isStrong ) {\n\t\t\tif ( a.key === b.key ) {\n\t\t\t\t// If operations attributes are in conflict, check if their ranges intersect and manage them properly.\n\n\t\t\t\t// First, we want to apply change to the part of a range that has not been changed by the other operation.\n\t\t\t\tlet operations = a.range.getDifference( b.range ).map( ( range ) => {\n\t\t\t\t\treturn new AttributeOperation( range, a.key, a.oldValue, a.newValue, a.baseVersion );\n\t\t\t\t} );\n\n\t\t\t\t// Then we take care of the common part of ranges.\n\t\t\t\tconst common = a.range.getIntersection( b.range );\n\n\t\t\t\tif ( common ) {\n\t\t\t\t\t// If this operation is more important, we also want to apply change to the part of the\n\t\t\t\t\t// original range that has already been changed by the other operation. Since that range\n\t\t\t\t\t// got changed we also have to update `oldValue`.\n\t\t\t\t\tif ( isStrong ) {\n\t\t\t\t\t\toperations.push( new AttributeOperation( common, b.key, b.newValue, a.newValue, a.baseVersion ) );\n\t\t\t\t\t} else if ( operations.length === 0 ) {\n\t\t\t\t\t\toperations.push( new NoOperation( 0 ) );\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\treturn operations;\n\t\t\t} else {\n\t\t\t\t// If operations don't conflict, simply return an array containing just a clone of this operation.\n\t\t\t\treturn [ a.clone() ];\n\t\t\t}\n\t\t},\n\n\t\tRootAttributeOperation: doNotUpdate,\n\n\t\tRenameOperation: doNotUpdate,\n\n\t\tMarkerOperation: doNotUpdate,\n\n\t\t// Transforms AttributeOperation `a` by MoveOperation `b`. Returns results as an array of operations.\n\t\tMoveOperation( a, b ) {\n\t\t\t// Convert MoveOperation properties into a range.\n\t\t\tconst rangeB = Range.createFromPositionAndShift( b.sourcePosition, b.howMany );\n\n\t\t\t// This will aggregate transformed ranges.\n\t\t\tlet ranges = [];\n\n\t\t\t// Special case when MoveOperation is in fact a RemoveOperation. RemoveOperation not only moves nodes but also\n\t\t\t// creates a \"holder\" element for them in graveyard. If there was a RemoveOperation pointing to an offset\n\t\t\t// before this AttributeOperation, we have to increment AttributeOperation's offset.\n\t\t\tif ( b instanceof RemoveOperation && b._needsHolderElement &&\n\t\t\t\ta.range.root == b.targetPosition.root && a.range.start.path[ 0 ] >= b._holderElementOffset\n\t\t\t) {\n\t\t\t\t// Do not change original operation!\n\t\t\t\ta = a.clone();\n\t\t\t\ta.range.start.path[ 0 ]++;\n\t\t\t\ta.range.end.path[ 0 ]++;\n\t\t\t}\n\n\t\t\t// Difference is a part of changed range that is modified by AttributeOperation but is not affected\n\t\t\t// by MoveOperation. This can be zero, one or two ranges (if moved range is inside changed range).\n\t\t\t// Right now we will make a simplification and join difference ranges and transform them as one. We will cover rangeB later.\n\t\t\tconst difference = joinRanges( a.range.getDifference( rangeB ) );\n\n\t\t\t// Common is a range of nodes that is affected by MoveOperation. So it got moved to other place.\n\t\t\tconst common = a.range.getIntersection( rangeB );\n\n\t\t\tif ( difference !== null ) {\n\t\t\t\t// MoveOperation removes nodes from their original position. We acknowledge this by proper transformation.\n\t\t\t\t// Take the start and the end of the range and transform them by deletion of moved nodes.\n\t\t\t\t// Note that if rangeB was inside AttributeOperation range, only difference.end will be transformed.\n\t\t\t\t// This nicely covers the joining simplification we did in the previous step.\n\t\t\t\tdifference.start = difference.start._getTransformedByDeletion( b.sourcePosition, b.howMany );\n\t\t\t\tdifference.end = difference.end._getTransformedByDeletion( b.sourcePosition, b.howMany );\n\n\t\t\t\t// MoveOperation pastes nodes into target position. We acknowledge this by proper transformation.\n\t\t\t\t// Note that since we operate on transformed difference range, we should transform by\n\t\t\t\t// previously transformed target position.\n\t\t\t\t// Note that we do not use Position._getTransformedByMove on range boundaries because we need to\n\t\t\t\t// transform by insertion a range as a whole, since newTargetPosition might be inside that range.\n\t\t\t\tranges = difference._getTransformedByInsertion( b.getMovedRangeStart(), b.howMany, true, false ).reverse();\n\t\t\t}\n\n\t\t\tif ( common !== null ) {\n\t\t\t\t// Here we do not need to worry that newTargetPosition is inside moved range, because that\n\t\t\t\t// would mean that the MoveOperation targets into itself, and that is incorrect operation.\n\t\t\t\t// Instead, we calculate the new position of that part of original range.\n\t\t\t\tcommon.start = common.start._getCombined( b.sourcePosition, b.getMovedRangeStart() );\n\t\t\t\tcommon.end = common.end._getCombined( b.sourcePosition, b.getMovedRangeStart() );\n\n\t\t\t\tranges.push( common );\n\t\t\t}\n\n\t\t\t// Map transformed range(s) to operations and return them.\n\t\t\treturn ranges.map( ( range ) => {\n\t\t\t\treturn new AttributeOperation( range, a.key, a.oldValue, a.newValue, a.baseVersion );\n\t\t\t} );\n\t\t}\n\t},\n\n\tRootAttributeOperation: {\n\t\tInsertOperation: doNotUpdate,\n\n\t\tAttributeOperation: doNotUpdate,\n\n\t\t// Transforms RootAttributeOperation `a` by RootAttributeOperation `b`. Accepts a flag stating whether `a` is more important\n\t\t// than `b` when it comes to resolving conflicts. Returns results as an array of operations.\n\t\tRootAttributeOperation( a, b, isStrong ) {\n\t\t\tif ( a.root === b.root && a.key === b.key ) {\n\t\t\t\tif ( ( a.newValue !== b.newValue && !isStrong ) || a.newValue === b.newValue ) {\n\t\t\t\t\treturn [ new NoOperation( a.baseVersion ) ];\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn [ a.clone() ];\n\t\t},\n\n\t\tRenameOperation: doNotUpdate,\n\n\t\tMarkerOperation: doNotUpdate,\n\n\t\tMoveOperation: doNotUpdate\n\t},\n\n\tRenameOperation: {\n\t\t// Transforms RenameOperation `a` by InsertOperation `b`. Returns results as an array of operations.\n\t\tInsertOperation( a, b ) {\n\t\t\t// Clone the operation, we don't want to alter the original operation.\n\t\t\tconst clone = a.clone();\n\n\t\t\t// Transform this operation's position.\n\t\t\tclone.position = clone.position._getTransformedByInsertion( b.position, b.nodes.maxOffset, true );\n\n\t\t\treturn [ clone ];\n\t\t},\n\n\t\tAttributeOperation: doNotUpdate,\n\n\t\tRootAttributeOperation: doNotUpdate,\n\n\t\t// Transforms RenameOperation `a` by RenameOperation `b`. Accepts a flag stating whether `a` is more important\n\t\t// than `b` when it comes to resolving conflicts. Returns results as an array of operations.\n\t\tRenameOperation( a, b, isStrong ) {\n\t\t\t// Clone the operation, we don't want to alter the original operation.\n\t\t\tconst clone = a.clone();\n\n\t\t\tif ( a.position.isEqual( b.position ) ) {\n\t\t\t\tif ( isStrong ) {\n\t\t\t\t\tclone.oldName = b.newName;\n\t\t\t\t} else {\n\t\t\t\t\treturn [ new NoOperation( a.baseVersion ) ];\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn [ clone ];\n\t\t},\n\n\t\tMarkerOperation: doNotUpdate,\n\n\t\t// Transforms RenameOperation `a` by MoveOperation `b`. Returns results as an array of operations.\n\t\tMoveOperation( a, b ) {\n\t\t\tconst clone = a.clone();\n\t\t\tconst isSticky = clone.position.isEqual( b.sourcePosition );\n\n\t\t\tclone.position = clone.position._getTransformedByMove( b.sourcePosition, b.targetPosition, b.howMany, true, isSticky );\n\n\t\t\treturn [ clone ];\n\t\t}\n\t},\n\n\tMarkerOperation: {\n\t\t// Transforms MarkerOperation `a` by InsertOperation `b`. Returns results as an array of operations.\n\t\tInsertOperation( a, b ) {\n\t\t\t// Clone the operation, we don't want to alter the original operation.\n\t\t\tconst clone = a.clone();\n\n\t\t\tif ( clone.oldRange ) {\n\t\t\t\tclone.oldRange = clone.oldRange._getTransformedByInsertion( b.position, b.nodes.maxOffset, false, false )[ 0 ];\n\t\t\t}\n\n\t\t\tif ( clone.newRange ) {\n\t\t\t\tclone.newRange = clone.newRange._getTransformedByInsertion( b.position, b.nodes.maxOffset, false, false )[ 0 ];\n\t\t\t}\n\n\t\t\treturn [ clone ];\n\t\t},\n\n\t\tAttributeOperation: doNotUpdate,\n\n\t\tRootAttributeOperation: doNotUpdate,\n\n\t\tRenameOperation: doNotUpdate,\n\n\t\t// Transforms MarkerOperation `a` by MarkerOperation `b`. Accepts a flag stating whether `a` is more important\n\t\t// than `b` when it comes to resolving conflicts. Returns results as an array of operations.\n\t\tMarkerOperation( a, b, isStrong ) {\n\t\t\t// Clone the operation, we don't want to alter the original operation.\n\t\t\tconst clone = a.clone();\n\n\t\t\tif ( a.name == b.name ) {\n\t\t\t\tif ( isStrong ) {\n\t\t\t\t\tclone.oldRange = b.newRange;\n\t\t\t\t} else {\n\t\t\t\t\treturn [ new NoOperation( a.baseVersion ) ];\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn [ clone ];\n\t\t},\n\n\t\t// Transforms MarkerOperation `a` by MoveOperation `b`. Returns results as an array of operations.\n\t\tMoveOperation( a, b ) {\n\t\t\t// Clone the operation, we don't want to alter the original operation.\n\t\t\tconst clone = a.clone();\n\n\t\t\tif ( clone.oldRange ) {\n\t\t\t\tconst oldRanges = clone.oldRange._getTransformedByMove( b.sourcePosition, b.targetPosition, b.howMany );\n\t\t\t\tclone.oldRange = Range.createFromRanges( oldRanges );\n\t\t\t}\n\n\t\t\tif ( clone.newRange ) {\n\t\t\t\tconst newRanges = clone.newRange._getTransformedByMove( b.sourcePosition, b.targetPosition, b.howMany );\n\t\t\t\tclone.newRange = Range.createFromRanges( newRanges );\n\t\t\t}\n\n\t\t\treturn [ clone ];\n\t\t}\n\t},\n\n\tMoveOperation: {\n\t\t// Transforms MoveOperation `a` by InsertOperation `b`. Accepts a flag stating whether `a` is more important\n\t\t// than `b` when it comes to resolving conflicts. Returns results as an array of operations.\n\t\tInsertOperation( a, b, isStrong ) {\n\t\t\t// Create range from MoveOperation properties and transform it by insertion.\n\t\t\tlet range = Range.createFromPositionAndShift( a.sourcePosition, a.howMany );\n\t\t\trange = range._getTransformedByInsertion( b.position, b.nodes.maxOffset, false, a.isSticky )[ 0 ];\n\n\t\t\tlet result = new a.constructor(\n\t\t\t\trange.start,\n\t\t\t\trange.end.offset - range.start.offset,\n\t\t\t\ta instanceof RemoveOperation ?\n\t\t\t\t\ta.baseVersion :\n\t\t\t\t\ta.targetPosition._getTransformedByInsertion( b.position, b.nodes.maxOffset, !isStrong ),\n\t\t\t\ta instanceof RemoveOperation ? undefined : a.baseVersion\n\t\t\t);\n\n\t\t\tresult.isSticky = a.isSticky;\n\n\t\t\tif ( a instanceof RemoveOperation ) {\n\t\t\t\tresult._needsHolderElement = a._needsHolderElement;\n\t\t\t\tresult._holderElementOffset = a._holderElementOffset;\n\t\t\t}\n\n\t\t\treturn [ result ];\n\t\t},\n\n\t\tAttributeOperation: doNotUpdate,\n\n\t\tRootAttributeOperation: doNotUpdate,\n\n\t\tRenameOperation: doNotUpdate,\n\n\t\tMarkerOperation: doNotUpdate,\n\n\t\t// Transforms MoveOperation `a` by MoveOperation `b`. Accepts a flag stating whether `a` is more important\n\t\t// than `b` when it comes to resolving conflicts. Returns results as an array of operations.\n\t\tMoveOperation( a, b, isStrong ) {\n\t\t\t// Special case when both move operations' target positions are inside nodes that are\n\t\t\t// being moved by the other move operation. So in other words, we move ranges into inside of each other.\n\t\t\t// This case can't be solved reasonably (on the other hand, it should not happen often).\n\t\t\tif ( moveTargetIntoMovedRange( a, b ) && moveTargetIntoMovedRange( b, a ) ) {\n\t\t\t\t// Instead of transforming operation, we return a reverse of the operation that we transform by.\n\t\t\t\t// So when the results of this \"transformation\" will be applied, `b` MoveOperation will get reversed.\n\t\t\t\treturn [ b.getReversed() ];\n\t\t\t}\n\n\t\t\t// Special case when both operations are RemoveOperations. RemoveOperation not only moves nodes but also\n\t\t\t// (usually) creates a \"holder\" element for them in graveyard. Each RemoveOperation should move nodes to different\n\t\t\t// \"holder\" element. If `a` operation points after `b` operation, we move `a` offset to acknowledge\n\t\t\t// \"holder\" element insertion.\n\t\t\tif ( a instanceof RemoveOperation && b instanceof RemoveOperation ) {\n\t\t\t\tconst aTarget = a.targetPosition.path[ 0 ];\n\t\t\t\tconst bTarget = b.targetPosition.path[ 0 ];\n\n\t\t\t\tif ( aTarget > bTarget || ( aTarget == bTarget && isStrong ) ) {\n\t\t\t\t\t// Do not change original operation!\n\t\t\t\t\ta = a.clone();\n\t\t\t\t\ta.targetPosition.path[ 0 ]++;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// If only one of operations is a remove operation, we force remove operation to be the \"stronger\" one\n\t\t\t// to provide more expected results.\n\t\t\tif ( a instanceof RemoveOperation && !( b instanceof RemoveOperation ) ) {\n\t\t\t\tisStrong = true;\n\t\t\t} else if ( !( a instanceof RemoveOperation ) && b instanceof RemoveOperation ) {\n\t\t\t\tisStrong = false;\n\t\t\t}\n\n\t\t\t// Create ranges from MoveOperations properties.\n\t\t\tconst rangeA = Range.createFromPositionAndShift( a.sourcePosition, a.howMany );\n\t\t\tconst rangeB = Range.createFromPositionAndShift( b.sourcePosition, b.howMany );\n\n\t\t\t// This will aggregate transformed ranges.\n\t\t\tlet ranges = [];\n\n\t\t\t// All the other non-special cases are treated by generic algorithm below.\n\t\t\tlet difference = joinRanges( rangeA.getDifference( rangeB ) );\n\n\t\t\tif ( difference ) {\n\t\t\t\tdifference.start = difference.start._getTransformedByMove( b.sourcePosition, b.targetPosition, b.howMany, !a.isSticky, false );\n\t\t\t\tdifference.end = difference.end._getTransformedByMove( b.sourcePosition, b.targetPosition, b.howMany, a.isSticky, false );\n\n\t\t\t\tranges.push( difference );\n\t\t\t}\n\n\t\t\t// Then, we have to manage the common part of both move ranges.\n\t\t\tconst common = rangeA.getIntersection( rangeB );\n\n\t\t\t// If MoveOperations has common range it can be one of two:\n\t\t\t// * on the same tree level - it means that we move the same nodes into different places\n\t\t\t// * on deeper tree level - it means that we move nodes that are inside moved nodes\n\t\t\t// The operations are conflicting only if they try to move exactly same nodes, so only in the first case.\n\t\t\t// That means that we transform common part in two cases:\n\t\t\t// * `rangeA` is \"deeper\" than `rangeB` so it does not collide\n\t\t\t// * `rangeA` is at the same level but is stronger than `rangeB`.\n\t\t\tlet aCompB = compareArrays( a.sourcePosition.getParentPath(), b.sourcePosition.getParentPath() );\n\n\t\t\t// If the `b` MoveOperation points inside the `a` MoveOperation range, the common part will be included in\n\t\t\t// range(s) that (is) are results of processing `difference`. If that's the case, we cannot include it again.\n\t\t\tlet bTargetsToA = rangeA.containsPosition( b.targetPosition ) ||\n\t\t\t\t( rangeA.start.isEqual( b.targetPosition ) && a.isSticky ) ||\n\t\t\t\t( rangeA.end.isEqual( b.targetPosition ) && a.isSticky );\n\n\t\t\t// If the `b` MoveOperation range contains both whole `a` range and target position we do an exception and\n\t\t\t// transform `a` operation. Normally, when same nodes are moved, we stick with stronger operation's target.\n\t\t\t// Here it is a move inside larger range so there is no conflict because after all, all nodes from\n\t\t\t// smaller range will be moved to larger range target. The effect of this transformation feels natural.\n\t\t\t// Also if we wouldn't do that, we would get different results on both sides of transformation (i.e. in\n\t\t\t// collaborative editing).\n\t\t\tlet aIsInside = rangeB.containsRange( rangeA ) &&\n\t\t\t\t( rangeB.containsPosition( a.targetPosition ) || rangeB.start.isEqual( a.targetPosition ) || rangeB.end.isEqual( a.targetPosition ) );\n\n\t\t\tif ( common !== null && ( aCompB === 'extension' || ( aCompB === 'same' && isStrong ) || aIsInside ) && !bTargetsToA ) {\n\t\t\t\t// Here we do not need to worry that newTargetPosition is inside moved range, because that\n\t\t\t\t// would mean that the MoveOperation targets into itself, and that is incorrect operation.\n\t\t\t\t// Instead, we calculate the new position of that part of original range.\n\t\t\t\tcommon.start = common.start._getCombined( b.sourcePosition, b.getMovedRangeStart() );\n\t\t\t\tcommon.end = common.end._getCombined( b.sourcePosition, b.getMovedRangeStart() );\n\n\t\t\t\t// We have to take care of proper range order.\n\t\t\t\tif ( difference && rangeA.start.isBefore( rangeB.start ) ) {\n\t\t\t\t\tranges.push( common );\n\t\t\t\t} else {\n\t\t\t\t\tranges.unshift( common );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tif ( ranges.length === 0 ) {\n\t\t\t\t// At this point we transformed this operation's source ranges it means that nothing should be changed.\n\t\t\t\t// But since we need to return an instance of Operation we return an array with NoOperation.\n\n\t\t\t\tif ( a instanceof RemoveOperation ) {\n\t\t\t\t\t// If `a` operation was RemoveOperation, we cannot convert it to NoOperation.\n\t\t\t\t\t// This is because RemoveOperation creates a holder in graveyard.\n\t\t\t\t\t// Even if we \"remove nothing\" we need a RemoveOperation to create holder element\n\t\t\t\t\t// so that the tree structure is synchronised between clients.\n\t\t\t\t\t// Note that this can happen only if both operations are remove operations, because in\n\t\t\t\t\t// other case RemoveOperation would be forced to be stronger and there would be a common range to move.\n\t\t\t\t\ta = a.clone();\n\t\t\t\t\ta.howMany = 0;\n\t\t\t\t\ta.sourcePosition = b.targetPosition;\n\n\t\t\t\t\treturn [ a ];\n\t\t\t\t} else {\n\t\t\t\t\treturn [ new NoOperation( a.baseVersion ) ];\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Target position also could be affected by the other MoveOperation. We will transform it.\n\t\t\tlet newTargetPosition = a.targetPosition._getTransformedByMove(\n\t\t\t\tb.sourcePosition,\n\t\t\t\tb.targetPosition,\n\t\t\t\tb.howMany,\n\t\t\t\t!isStrong,\n\t\t\t\tb.isSticky || aIsInside\n\t\t\t);\n\n\t\t\t// Map transformed range(s) to operations and return them.\n\t\t\treturn ranges.reverse().map( ( range, i ) => {\n\t\t\t\t// We want to keep correct operation class.\n\t\t\t\tlet result = new a.constructor(\n\t\t\t\t\trange.start,\n\t\t\t\t\trange.end.offset - range.start.offset,\n\t\t\t\t\ta instanceof RemoveOperation ? a.baseVersion : newTargetPosition,\n\t\t\t\t\ta instanceof RemoveOperation ? undefined : a.baseVersion\n\t\t\t\t);\n\n\t\t\t\tresult.isSticky = a.isSticky;\n\n\t\t\t\tif ( a instanceof RemoveOperation ) {\n\t\t\t\t\t// Transformed `RemoveOperation` needs graveyard holder only when the original operation needed it.\n\t\t\t\t\t// If `RemoveOperation` got split into two or more operations, only first operation needs graveyard holder.\n\t\t\t\t\tresult._needsHolderElement = a._needsHolderElement && i === 0;\n\t\t\t\t\tresult._holderElementOffset = a._holderElementOffset;\n\t\t\t\t}\n\n\t\t\t\treturn result;\n\t\t\t} );\n\t\t}\n\t}\n};\n\nfunction transform( a, b, isStrong ) {\n\tlet group;\n\tlet algorithm;\n\n\tif ( a instanceof InsertOperation ) {\n\t\tgroup = ot.InsertOperation;\n\t} else if ( a instanceof AttributeOperation ) {\n\t\tgroup = ot.AttributeOperation;\n\t} else if ( a instanceof RootAttributeOperation ) {\n\t\tgroup = ot.RootAttributeOperation;\n\t} else if ( a instanceof RenameOperation ) {\n\t\tgroup = ot.RenameOperation;\n\t} else if ( a instanceof MarkerOperation ) {\n\t\tgroup = ot.MarkerOperation;\n\t} else if ( a instanceof MoveOperation ) {\n\t\tgroup = ot.MoveOperation;\n\t} else {\n\t\talgorithm = doNotUpdate;\n\t}\n\n\tif ( group ) {\n\t\tif ( b instanceof InsertOperation ) {\n\t\t\talgorithm = group.InsertOperation;\n\t\t} else if ( b instanceof AttributeOperation ) {\n\t\t\talgorithm = group.AttributeOperation;\n\t\t} else if ( b instanceof RootAttributeOperation ) {\n\t\t\talgorithm = group.RootAttributeOperation;\n\t\t} else if ( b instanceof RenameOperation ) {\n\t\t\talgorithm = group.RenameOperation;\n\t\t} else if ( b instanceof MarkerOperation ) {\n\t\t\talgorithm = group.MarkerOperation;\n\t\t} else if ( b instanceof MoveOperation ) {\n\t\t\talgorithm = group.MoveOperation;\n\t\t} else {\n\t\t\talgorithm = doNotUpdate;\n\t\t}\n\t}\n\n\tlet transformed = algorithm( a, b, isStrong );\n\n\treturn updateBaseVersions( a.baseVersion, transformed );\n}\n\n// When we don't want to update an operation, we create and return a clone of it.\n// Returns the operation in \"unified format\" - wrapped in an Array.\nfunction doNotUpdate( operation ) {\n\treturn [ operation.clone() ];\n}\n\n// Takes an Array of operations and sets consecutive base versions for them, starting from given base version.\n// Returns the passed array.\nfunction updateBaseVersions( baseVersion, operations ) {\n\tfor ( let i = 0; i < operations.length; i++ ) {\n\t\toperations[ i ].baseVersion = baseVersion + i + 1;\n\t}\n\n\treturn operations;\n}\n\n// Checks whether MoveOperation targetPosition is inside a node from the moved range of the other MoveOperation.\nfunction moveTargetIntoMovedRange( a, b ) {\n\treturn a.targetPosition._getTransformedByDeletion( b.sourcePosition, b.howMany ) === null;\n}\n\n// Gets an array of Ranges and produces one Range out of it. The root of a new range will be same as\n// the root of the first range in the array. If any of given ranges has different root than the first range,\n// it will be discarded.\nfunction joinRanges( ranges ) {\n\tif ( ranges.length === 0 ) {\n\t\treturn null;\n\t} else if ( ranges.length == 1 ) {\n\t\treturn ranges[ 0 ];\n\t} else {\n\t\tranges[ 0 ].end = ranges[ ranges.length - 1 ].end;\n\n\t\treturn ranges[ 0 ];\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/operation/transform.js\n// module id = 314\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/rootelement\n */\n\nimport Element from './element';\n\n/**\n * Type of {@link module:engine/model/element~Element} that is a root of a model tree.\n * @extends module:engine/model/element~Element\n */\nexport default class RootElement extends Element {\n\t/**\n\t * Creates root element.\n\t *\n\t * @param {module:engine/model/document~Document} doc Document that is an owner of this root.\n\t * @param {String} name Node name.\n\t * @param {String} [rootName='main'] Unique root name used to identify this root element by {@link module:engine/model/document~Document}.\n\t */\n\tconstructor( doc, name, rootName = 'main' ) {\n\t\tsuper( name );\n\n\t\t/**\n\t\t * Document that is an owner of this root.\n\t\t *\n\t\t * @private\n\t\t * @member {module:engine/model/document~Document}\n\t\t */\n\t\tthis._doc = doc;\n\n\t\t/**\n\t\t * Unique root name used to identify this root element by {@link module:engine/model/document~Document}.\n\t\t *\n\t\t * @readonly\n\t\t * @member {String}\n\t\t */\n\t\tthis.rootName = rootName;\n\t}\n\n\t/**\n\t * {@link module:engine/model/document~Document Document} that owns this root element.\n\t *\n\t * In contrary, to {@link module:engine/model/node~Node node}, root element always have a `document`.\n\t *\n\t * @readonly\n\t * @type {module:engine/model/document~Document|null}\n\t */\n\tget document() {\n\t\treturn this._doc;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tis( type, name ) {\n\t\tif ( !name ) {\n\t\t\treturn type == 'rootElement' || super.is( type );\n\t\t} else {\n\t\t\treturn ( type == 'rootElement' && name == this.name ) || super.is( type, name );\n\t\t}\n\t}\n\n\t/**\n\t * Converts `RootElement` instance to `String` containing it's name.\n\t *\n\t * @returns {String} `RootElement` instance converted to `String`.\n\t */\n\ttoJSON() {\n\t\treturn this.rootName;\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/rootelement.js\n// module id = 315\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/schema\n */\n\nimport Position from './position';\nimport Element from './element';\nimport clone from '@ckeditor/ckeditor5-utils/src/lib/lodash/clone';\nimport isArray from '@ckeditor/ckeditor5-utils/src/lib/lodash/isArray';\nimport isString from '@ckeditor/ckeditor5-utils/src/lib/lodash/isString';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/**\n * Schema is a definition of the structure of the document. It allows to define which tree model items (element, text, etc.)\n * can be nested within which ones and which attributes can be applied to them. It's created during the run-time of the application,\n * typically by features. Also, the features can query the schema to learn what structure is allowed and act accordingly.\n *\n * For instance, if a feature wants to define that an attribute bold is allowed on the text it needs to register this rule like this:\n *\n *\t\teditor.document.schema.allow( '$text', 'bold' );\n *\n * Note: items prefixed with `$` are special group of items. By default, `Schema` defines three special items:\n *\n * * `$inline` represents all inline elements,\n * * `$text` is a sub-group of `$inline` and represents text nodes,\n * * `$block` represents block elements,\n * * `$root` represents default editing roots (those that allow only `$block`s inside them).\n *\n * When registering an item it's possible to tell that this item should inherit from some other existing item.\n * E.g. `p` can inherit from `$block`, so whenever given attribute is allowed on the `$block` it will automatically be\n * also allowed on the `p` element. By default, `$text` item already inherits from `$inline`.\n */\nexport default class Schema {\n\t/**\n\t * Creates Schema instance.\n\t */\n\tconstructor() {\n\t\t/**\n\t\t * Names of elements which have \"object\" nature. This means that these\n\t\t * elements should be treated as whole, never merged, can be selected from outside, etc.\n\t\t * Just like images, placeholder widgets, etc.\n\t\t *\n\t\t * @member {Set.<String>} module:engine/model/schema~Schema#objects\n\t\t */\n\t\tthis.objects = new Set();\n\n\t\t/**\n\t\t * Names of elements to which editing operations should be limited.\n\t\t * For example, the <kbd>Enter</kbd> should not split such elements and\n\t\t * <kbd>Backspace</kbd> should not be able to leave or modify such elements.\n\t\t *\n\t\t * @member {Set.<String>} module:engine/model/schema~Schema#limits\n\t\t */\n\t\tthis.limits = new Set();\n\n\t\t/**\n\t\t * Schema items registered in the schema.\n\t\t *\n\t\t * @private\n\t\t * @member {Map} module:engine/model/schema~Schema#_items\n\t\t */\n\t\tthis._items = new Map();\n\n\t\t/**\n\t\t * Description of what entities are a base for given entity.\n\t\t *\n\t\t * @private\n\t\t * @member {Map} module:engine/model/schema~Schema#_extensionChains\n\t\t */\n\t\tthis._extensionChains = new Map();\n\n\t\t// Register some default abstract entities.\n\t\tthis.registerItem( '$root' );\n\t\tthis.registerItem( '$block' );\n\t\tthis.registerItem( '$inline' );\n\t\tthis.registerItem( '$text', '$inline' );\n\n\t\tthis.allow( { name: '$block', inside: '$root' } );\n\t\tthis.allow( { name: '$inline', inside: '$block' } );\n\n\t\t// TMP!\n\t\t// Create an \"all allowed\" context in the schema for processing the pasted content.\n\t\t// Read: https://github.com/ckeditor/ckeditor5-engine/issues/638#issuecomment-255086588\n\n\t\tthis.registerItem( '$clipboardHolder', '$root' );\n\t\tthis.allow( { name: '$inline', inside: '$clipboardHolder' } );\n\t}\n\n\t/**\n\t * Allows given query in the schema.\n\t *\n\t *\t\t// Allow text with bold attribute in all P elements.\n\t *\t\tschema.registerItem( 'p', '$block' );\n\t *\t\tschema.allow( { name: '$text', attributes: 'bold', inside: 'p' } );\n\t *\n\t *\t\t// Allow header in Ps that are in DIVs\n\t *\t\tschema.registerItem( 'header', '$block' );\n\t *\t\tschema.registerItem( 'div', '$block' );\n\t *\t\tschema.allow( { name: 'header', inside: 'div p' } ); // inside: [ 'div', 'p' ] would also work.\n\t *\n\t * @param {module:engine/model/schema~SchemaQuery} query Allowed query.\n\t */\n\tallow( query ) {\n\t\tthis._getItem( query.name ).allow( Schema._normalizeQueryPath( query.inside ), query.attributes );\n\t}\n\n\t/**\n\t * Disallows given query in the schema.\n\t *\n\t * @see #allow\n\t * @param {module:engine/model/schema~SchemaQuery} query Disallowed query.\n\t */\n\tdisallow( query ) {\n\t\tthis._getItem( query.name ).disallow( Schema._normalizeQueryPath( query.inside ), query.attributes );\n\t}\n\n\t/**\n\t * Makes a requirement in schema that entity represented by given item has to have given set of attributes. Some\n\t * elements in the model might require some attributes to be set. If multiple sets of attributes are required it\n\t * is enough that the entity fulfills only one set.\n\t *\n\t *\t\t// \"a\" element must either have \"href\" attribute or \"name\" attribute\n\t *\t\tschema.requireAttributes( 'a', [ 'href' ] );\n\t *\t\tschema.requireAttributes( 'a', [ 'name' ] );\n\t *\t\t// \"img\" element must have both \"src\" and \"alt\" attributes\n\t *\t\tschema.requireAttributes( 'img', [ 'src', 'alt' ] );\n\t *\n\t * @param {String} name Entity name.\n\t * @param {Array.<String>} attributes Attributes that has to be set on the entity to make it valid.\n\t */\n\trequireAttributes( name, attributes ) {\n\t\tthis._getItem( name ).requireAttributes( attributes );\n\t}\n\n\t/**\n\t * Checks whether given query is allowed in schema.\n\t *\n\t *\t\t// Check whether bold text is allowed in header element.\n\t *\t\tlet query = {\n\t *\t\t\tname: '$text',\n\t *\t\t\tattributes: 'bold',\n\t *\t\t\tinside: 'header'\n\t *\t\t};\n\t *\t\tif ( schema.check( query ) ) { ... }\n\t *\n\t *\t\t// Check whether bold and italic text can be placed at caret position.\n\t *\t\tlet caretPos = editor.document.selection.getFirstPosition();\n\t *\t\tlet query = {\n\t *\t\t\tname: '$text',\n\t *\t\t\tattributes: [ 'bold', 'italic' ],\n\t *\t\t\tinside: caretPos\n\t *\t\t};\n\t *\t\tif ( schema.check( query ) ) { ... }\n\t *\n\t *\t\t// Check whether image with alt, src and title is allowed in given elements path.\n\t *\t\tlet quoteElement = new Element( 'quote' );\n\t *\t\tlet query = {\n\t *\t\t\tname: 'img',\n\t *\t\t\tattributes: [ 'alt', 'src', 'title' ],\n\t *\t\t\t// It is possible to mix strings with elements.\n\t *\t\t\t// Query will check whether \"img\" can be inside \"quoteElement\" that is inside a block element.\n\t *\t\t\tinside: [ '$block', quoteElement ]\n\t *\t\t};\n\t *\t\tif ( schema.check( query ) ) { ... }\n\t *\n\t * @param {module:engine/model/schema~SchemaQuery} query Query to check.\n\t * @returns {Boolean} `true` if given query is allowed in schema, `false` otherwise.\n\t */\n\tcheck( query ) {\n\t\tif ( !this.hasItem( query.name ) ) {\n\t\t\treturn false;\n\t\t}\n\n\t\t// If attributes property is a string or undefined, wrap it in an array for easier processing.\n\t\tif ( !isArray( query.attributes ) ) {\n\t\t\tquery.attributes = [ query.attributes ];\n\t\t} else if ( query.attributes.length === 0 ) {\n\t\t\t// To simplify algorithms, when a SchemaItem path is added \"without\" attribute, it is added with\n\t\t\t// attribute equal to undefined. This means that algorithms can work the same way for specified attributes\n\t\t\t// and no-atrtibutes, but we have to fill empty array with \"fake\" undefined value for algorithms reasons.\n\t\t\tquery.attributes.push( undefined );\n\t\t}\n\n\t\t// Normalize the path to an array of strings.\n\t\tconst path = Schema._normalizeQueryPath( query.inside );\n\n\t\t// Get extension chain of given item and retrieve all schema items that are extended by given item.\n\t\tconst schemaItems = this._extensionChains.get( query.name ).map( ( name ) => {\n\t\t\treturn this._getItem( name );\n\t\t} );\n\n\t\t// First check if the query meets at required attributes for this item.\n\t\tif ( !this._getItem( query.name )._checkRequiredAttributes( query.attributes ) ) {\n\t\t\treturn false;\n\t\t}\n\n\t\t// If there is matching disallow path, this query is not valid with schema.\n\t\tfor ( let attribute of query.attributes ) {\n\t\t\tfor ( let schemaItem of schemaItems ) {\n\t\t\t\tif ( schemaItem._hasMatchingPath( 'disallow', path, attribute ) ) {\n\t\t\t\t\treturn false;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t// At this point, the query is not disallowed.\n\t\t// If there are correct allow paths that match the query, this query is valid with schema.\n\t\t// Since we are supporting multiple attributes, we have to make sure that if attributes are set,\n\t\t// we have allowed paths for all of them.\n\t\t// Keep in mind that if the query has no attributes, query.attribute was converted to an array\n\t\t// with a single `undefined` value. This fits the algorithm well.\n\t\tfor ( let attribute of query.attributes ) {\n\t\t\tlet matched = false;\n\n\t\t\tfor ( let schemaItem of schemaItems ) {\n\t\t\t\tif ( schemaItem._hasMatchingPath( 'allow', path, attribute ) ) {\n\t\t\t\t\tmatched = true;\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// The attribute has not been matched, so it is not allowed by any schema item.\n\t\t\t// The query is disallowed.\n\t\t\tif ( !matched ) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t}\n\n\t\treturn true;\n\t}\n\n\t/**\n\t * Checks whether there is an item registered under given name in schema.\n\t *\n\t * @param itemName\n\t * @returns {Boolean}\n\t */\n\thasItem( itemName ) {\n\t\treturn this._items.has( itemName );\n\t}\n\n\t/**\n\t * Registers given item name in schema.\n\t *\n\t *\t\t// Register P element that should be treated like all block elements.\n\t *\t\tschema.registerItem( 'p', '$block' );\n\t *\n\t * @param {String} itemName Name to register.\n\t * @param [isExtending] If set, new item will extend item with given name.\n\t */\n\tregisterItem( itemName, isExtending ) {\n\t\tif ( this.hasItem( itemName ) ) {\n\t\t\t/**\n\t\t\t * Item with specified name already exists in schema.\n\t\t\t *\n\t\t\t * @error model-schema-item-exists\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'model-schema-item-exists: Item with specified name already exists in schema.' );\n\t\t}\n\n\t\tif ( !!isExtending && !this.hasItem( isExtending ) ) {\n\t\t\t/**\n\t\t\t * Item with specified name does not exist in schema.\n\t\t\t *\n\t\t\t * @error model-schema-no-item\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'model-schema-no-item: Item with specified name does not exist in schema.' );\n\t\t}\n\n\t\t// Create new SchemaItem and add it to the items store.\n\t\tthis._items.set( itemName, new SchemaItem( this ) );\n\n\t\t// Create an extension chain.\n\t\t// Extension chain has all item names that should be checked when that item is on path to check.\n\t\t// This simply means, that if item is not extending anything, it should have only itself in it's extension chain.\n\t\t// Since extending is not dynamic, we can simply get extension chain of extended item and expand it with registered name,\n\t\t// if the registered item is extending something.\n\t\tconst chain = this.hasItem( isExtending ) ? this._extensionChains.get( isExtending ).concat( itemName ) : [ itemName ];\n\t\tthis._extensionChains.set( itemName, chain );\n\t}\n\n\t/**\n\t * Checks whether item of given name is extending item of another given name.\n\t *\n\t * @param {String} childItemName Name of the child item.\n\t * @param {String} parentItemName Name of the parent item.\n\t * @returns {Boolean} `true` if child item extends parent item, `false` otherwise.\n\t */\n\titemExtends( childItemName, parentItemName ) {\n\t\tif ( !this.hasItem( childItemName ) || !this.hasItem( parentItemName ) ) {\n\t\t\t/**\n\t\t\t * Item with specified name does not exist in schema.\n\t\t\t *\n\t\t\t * @error model-schema-no-item\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'model-schema-no-item: Item with specified name does not exist in schema.' );\n\t\t}\n\n\t\tconst chain = this._extensionChains.get( childItemName );\n\n\t\treturn chain.some( itemName => itemName == parentItemName );\n\t}\n\n\t/**\n\t * Returns {@link module:engine/model/schema~SchemaItem schema item} that was registered in the schema under given name.\n\t * If item has not been found, throws error.\n\t *\n\t * @private\n\t * @param {String} itemName Name to look for in schema.\n\t * @returns {module:engine/model/schema~SchemaItem} Schema item registered under given name.\n\t */\n\t_getItem( itemName ) {\n\t\tif ( !this.hasItem( itemName ) ) {\n\t\t\t/**\n\t\t\t * Item with specified name does not exist in schema.\n\t\t\t *\n\t\t\t * @error model-schema-no-item\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'model-schema-no-item: Item with specified name does not exist in schema.' );\n\t\t}\n\n\t\treturn this._items.get( itemName );\n\t}\n\n\t/**\n\t * Normalizes a path to an entity by converting it from {@link module:engine/model/schema~SchemaPath} to an array of strings.\n\t *\n\t * @protected\n\t * @param {module:engine/model/schema~SchemaPath} path Path to normalize.\n\t * @returns {Array.<String>} Normalized path.\n\t */\n\tstatic _normalizeQueryPath( path ) {\n\t\tlet normalized = [];\n\n\t\tif ( isArray( path ) ) {\n\t\t\tfor ( let pathItem of path ) {\n\t\t\t\tif ( pathItem instanceof Element ) {\n\t\t\t\t\tnormalized.push( pathItem.name );\n\t\t\t\t} else if ( isString( pathItem ) ) {\n\t\t\t\t\tnormalized.push( pathItem );\n\t\t\t\t}\n\t\t\t}\n\t\t} else if ( path instanceof Position ) {\n\t\t\tlet parent = path.parent;\n\n\t\t\twhile ( parent !== null ) {\n\t\t\t\tnormalized.push( parent.name );\n\t\t\t\tparent = parent.parent;\n\t\t\t}\n\n\t\t\tnormalized.reverse();\n\t\t} else if ( isString( path ) ) {\n\t\t\tnormalized = path.split( ' ' );\n\t\t}\n\n\t\treturn normalized;\n\t}\n}\n\n/**\n * SchemaItem is a singular registry item in {@link module:engine/model/schema~Schema} that groups and holds allow/disallow rules for\n * one entity. This class is used internally in {@link module:engine/model/schema~Schema} and should not be used outside it.\n *\n * @see module:engine/model/schema~Schema\n * @protected\n */\nexport class SchemaItem {\n\t/**\n\t * Creates SchemaItem instance.\n\t *\n\t * @param {module:engine/model/schema~Schema} schema Schema instance that owns this item.\n\t */\n\tconstructor( schema ) {\n\t\t/**\n\t\t * Schema instance that owns this item.\n\t\t *\n\t\t * @private\n\t\t * @member {module:engine/model/schema~Schema} module:engine/model/schema~SchemaItem#_schema\n\t\t */\n\t\tthis._schema = schema;\n\n\t\t/**\n\t\t * Paths in which the entity, represented by this item, is allowed.\n\t\t *\n\t\t * @private\n\t\t * @member {Array} module:engine/model/schema~SchemaItem#_allowed\n\t\t */\n\t\tthis._allowed = [];\n\n\t\t/**\n\t\t * Paths in which the entity, represented by this item, is disallowed.\n\t\t *\n\t\t * @private\n\t\t * @member {Array} module:engine/model/schema~SchemaItem#_disallowed\n\t\t */\n\t\tthis._disallowed = [];\n\n\t\t/**\n\t\t * Attributes that are required by the entity represented by this item.\n\t\t *\n\t\t * @protected\n\t\t * @member {Array} module:engine/model/schema~SchemaItem#_requiredAttributes\n\t\t */\n\t\tthis._requiredAttributes = [];\n\t}\n\n\t/**\n\t * Allows entity, represented by this item, to be in given path.\n\t *\n\t * @param {Array.<String>} path Path in which entity is allowed.\n\t * @param {Array.<String>|String} [attributes] If set, this path will be used only for entities that have attribute(s) with this key.\n\t */\n\tallow( path, attributes ) {\n\t\tthis._addPath( '_allowed', path, attributes );\n\t}\n\n\t/**\n\t * Disallows entity, represented by this item, to be in given path.\n\t *\n\t * @param {Array.<String>} path Path in which entity is disallowed.\n\t * @param {Array.<String>|String} [attributes] If set, this path will be used only for entities that have an attribute(s) with this key.\n\t */\n\tdisallow( path, attributes ) {\n\t\tthis._addPath( '_disallowed', path, attributes );\n\t}\n\n\t/**\n\t * Specifies that the entity, to be valid, requires given attributes set. It is possible to register multiple\n\t * different attributes set. If there are more than one attributes set required, the entity will be valid if\n\t * at least one of them is fulfilled.\n\t *\n\t * @param {Array.<String>} attributes Attributes that has to be set on the entity to make it valid.\n\t */\n\trequireAttributes( attributes ) {\n\t\tthis._requiredAttributes.push( attributes );\n\t}\n\n\t/**\n\t * Adds path to the SchemaItem instance.\n\t *\n\t * @private\n\t * @param {String} member Name of the array member into which the path will be added. Possible values are `_allowed` or `_disallowed`.\n\t * @param {Array.<String>} path Path to add.\n\t * @param {Array.<String>|String} [attributes] If set, this path will be used only for entities that have attribute(s) with this key.\n\t */\n\t_addPath( member, path, attributes ) {\n\t\tpath = path.slice();\n\n\t\tif ( !isArray( attributes ) ) {\n\t\t\tattributes = [ attributes ];\n\t\t}\n\n\t\tfor ( let attribute of attributes ) {\n\t\t\tthis[ member ].push( { path, attribute } );\n\t\t}\n\t}\n\n\t/**\n\t * Returns all paths of given type that were previously registered in the item.\n\t *\n\t * @private\n\t * @param {String} type Paths' type. Possible values are `allow` or `disallow`.\n\t * @param {String} [attribute] If set, only paths registered for given attribute will be returned.\n\t * @returns {Array} Paths registered in the item.\n\t */\n\t_getPaths( type, attribute ) {\n\t\tconst source = type === 'allow' ? this._allowed : this._disallowed;\n\t\tconst paths = [];\n\n\t\tfor ( let item of source ) {\n\t\t\tif ( item.attribute === attribute ) {\n\t\t\t\tpaths.push( item.path );\n\t\t\t}\n\t\t}\n\n\t\treturn paths;\n\t}\n\n\t/**\n\t * Checks whether given set of attributes fulfills required attributes of this item.\n\t *\n\t * @protected\n\t * @see module:engine/model/schema~SchemaItem#requireAttributes\n\t * @param {Array.<String>} attributesToCheck Attributes to check.\n\t * @returns {Boolean} `true` if given set or attributes fulfills required attributes, `false` otherwise.\n\t */\n\t_checkRequiredAttributes( attributesToCheck ) {\n\t\tlet found = true;\n\n\t\tfor ( let attributeSet of this._requiredAttributes ) {\n\t\t\tfound = true;\n\n\t\t\tfor ( let attribute of attributeSet ) {\n\t\t\t\tif ( attributesToCheck.indexOf( attribute ) == -1 ) {\n\t\t\t\t\tfound = false;\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tif ( found ) {\n\t\t\t\tbreak;\n\t\t\t}\n\t\t}\n\n\t\treturn found;\n\t}\n\n\t/**\n\t * Checks whether this item has any registered path of given type that matches the provided path.\n\t *\n\t * @protected\n\t * @param {String} type Paths' type. Possible values are `allow` or `disallow`.\n\t * @param {Array.<String>} pathToCheck Path to check.\n\t * @param {String} [attribute] If set, only paths registered for given attribute will be checked.\n\t * @returns {Boolean} `true` if item has any registered matching path, `false` otherwise.\n\t */\n\t_hasMatchingPath( type, pathToCheck, attribute ) {\n\t\tconst registeredPaths = this._getPaths( type, attribute );\n\n\t\tfor ( const registeredPathPath of registeredPaths ) {\n\t\t\tif ( matchPaths( this._schema, pathToCheck, registeredPathPath ) ) {\n\t\t\t\treturn true;\n\t\t\t}\n\t\t}\n\n\t\treturn false;\n\t}\n\n\t/**\n\t * Custom toJSON method to solve child-parent circular dependencies.\n\t *\n\t * @returns {Object} Clone of this object with the parent property replaced with its name.\n\t */\n\ttoJSON() {\n\t\tconst json = clone( this );\n\n\t\t// Due to circular references we need to remove parent reference.\n\t\tjson._schema = '[model.Schema]';\n\n\t\treturn json;\n\t}\n}\n\n/**\n * Object with query used by {@link module:engine/model/schema~Schema} to query schema or add allow/disallow rules to schema.\n *\n * @typedef {Object} module:engine/model/schema~SchemaQuery\n * @property {String} name Entity name.\n * @property {module:engine/model/schema~SchemaPath} inside Path inside which the entity is placed.\n * @property {Array.<String>|String} [attributes] If set, the query applies only to entities that has attribute(s) with given key.\n */\n\n/**\n * Path to an entity, begins from the top-most ancestor. Can be passed in multiple formats. Internally, normalized to\n * an array of strings. If string is passed, entities from the path should be divided by ` ` (space character). If\n * an array is passed, unrecognized items are skipped. If position is passed, it is assumed that the entity is at given position.\n *\n * @typedef {String|Array.<String|module:engine/model/element~Element>|module:engine/model/position~Position}\n * module:engine/model/schema~SchemaPath\n */\n\n// Checks whether the given pathToCheck and registeredPath right ends match.\n//\n// pathToCheck: C, D\n// registeredPath: A, B, C, D\n// result: OK\n//\n// pathToCheck: A, B, C\n// registeredPath: A, B, C, D\n// result: NOK\n//\n// Note – when matching paths, element extension chains (inheritance) are taken into consideration.\n//\n// @param {Schema} schema\n// @param {Array.<String>} pathToCheck\n// @param {Array.<String>} registeredPath\nfunction matchPaths( schema, pathToCheck, registeredPath ) {\n\t// Start checking from the right end of both tables.\n\tlet registeredPathIndex = registeredPath.length - 1;\n\tlet pathToCheckIndex = pathToCheck.length - 1;\n\n\t// And finish once reaching an end of the shorter table.\n\twhile ( registeredPathIndex >= 0 && pathToCheckIndex >= 0 ) {\n\t\tconst checkName = pathToCheck[ pathToCheckIndex ];\n\n\t\t// Fail when checking a path which contains element which aren't even registered to the schema.\n\t\tif ( !schema.hasItem( checkName ) ) {\n\t\t\treturn false;\n\t\t}\n\n\t\tconst extChain = schema._extensionChains.get( checkName );\n\n\t\tif ( extChain.includes( registeredPath[ registeredPathIndex ] ) ) {\n\t\t\tregisteredPathIndex--;\n\t\t\tpathToCheckIndex--;\n\t\t} else {\n\t\t\treturn false;\n\t\t}\n\t}\n\n\treturn true;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/model/schema.js\n// module id = 316\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/document\n */\n\nimport Selection from './selection';\nimport Renderer from './renderer';\nimport DomConverter from './domconverter';\nimport RootEditableElement from './rooteditableelement';\nimport { injectQuirksHandling } from './filler';\nimport log from '@ckeditor/ckeditor5-utils/src/log';\nimport MutationObserver from './observer/mutationobserver';\nimport SelectionObserver from './observer/selectionobserver';\nimport FocusObserver from './observer/focusobserver';\nimport KeyObserver from './observer/keyobserver';\nimport FakeSelectionObserver from './observer/fakeselectionobserver';\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\nimport ObservableMixin from '@ckeditor/ckeditor5-utils/src/observablemixin';\n\n/**\n * Document class creates an abstract layer over the content editable area.\n * It combines the actual tree of view elements, tree of DOM elements,\n * {@link module:engine/view/domconverter~DomConverter DOM Converter}, {@link module:engine/view/renderer~Renderer renderer} and all\n * {@link module:engine/view/observer/observer~Observer observers}.\n *\n * If you want to only transform the tree of view elements to the DOM elements you can use the\n * {@link module:engine/view/domconverter~DomConverter DomConverter}.\n *\n * Note that the following observers are added by the class constructor and are always available:\n *\n * * {@link module:engine/view/observer/mutationobserver~MutationObserver},\n * * {@link module:engine/view/observer/selectionobserver~SelectionObserver},\n * * {@link module:engine/view/observer/focusobserver~FocusObserver},\n * * {@link module:engine/view/observer/keyobserver~KeyObserver},\n * * {@link module:engine/view/observer/fakeselectionobserver~FakeSelectionObserver}.\n *\n * @mixes module:utils/observablemixin~ObservableMixin\n */\nexport default class Document {\n\t/**\n\t * Creates a Document instance.\n\t */\n\tconstructor() {\n\t\t/**\n\t\t * Roots of the DOM tree. Map on the `HTMLElement`s with roots names as keys.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Map} module:engine/view/document~Document#domRoots\n\t\t */\n\t\tthis.domRoots = new Map();\n\n\t\t/**\n\t\t * Selection done on this document.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/view/selection~Selection} module:engine/view/document~Document#selection\n\t\t */\n\t\tthis.selection = new Selection();\n\n\t\t/**\n\t\t * Instance of the {@link module:engine/view/domconverter~DomConverter domConverter} use by\n\t\t * {@link module:engine/view/document~Document#renderer renderer} and {@link module:engine/view/observer/observer~Observer observers}.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/view/domconverter~DomConverter} module:engine/view/document~Document#domConverter\n\t\t */\n\t\tthis.domConverter = new DomConverter();\n\n\t\t/**\n\t\t * Roots of the view tree. Map of the {module:engine/view/element~Element view elements} with roots names as keys.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Map} module:engine/view/document~Document#roots\n\t\t */\n\t\tthis.roots = new Map();\n\n\t\t/**\n\t\t * True if document is focused.\n\t\t *\n\t\t * This property is updated by the {@link module:engine/view/observer/focusobserver~FocusObserver}.\n\t\t * If the {@link module:engine/view/observer/focusobserver~FocusObserver} is disabled this property will not change.\n\t\t *\n\t\t * @readonly\n\t\t * @observable\n\t\t * @member {Boolean} module:engine/view/document~Document#isFocused\n\t\t */\n\t\tthis.set( 'isFocused', false );\n\n\t\t/**\n\t\t * Instance of the {@link module:engine/view/document~Document#renderer renderer}.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/view/renderer~Renderer} module:engine/view/document~Document#renderer\n\t\t */\n\t\tthis.renderer = new Renderer( this.domConverter, this.selection );\n\t\tthis.renderer.bind( 'isFocused' ).to( this, 'isFocused' );\n\n\t\t/**\n\t\t * Map of registered {@link module:engine/view/observer/observer~Observer observers}.\n\t\t *\n\t\t * @private\n\t\t * @member {Map.<Function, module:engine/view/observer/observer~Observer>} module:engine/view/document~Document#_observers\n\t\t */\n\t\tthis._observers = new Map();\n\n\t\t// Add default observers.\n\t\tthis.addObserver( MutationObserver );\n\t\tthis.addObserver( SelectionObserver );\n\t\tthis.addObserver( FocusObserver );\n\t\tthis.addObserver( KeyObserver );\n\t\tthis.addObserver( FakeSelectionObserver );\n\n\t\tinjectQuirksHandling( this );\n\n\t\t// Listens `render` event on default priority.\n\t\t// This way we can attach other listeners before or after rendering execution.\n\t\tthis.on( 'render', () => {\n\t\t\tthis.disableObservers();\n\t\t\tthis.renderer.render();\n\t\t\tthis.enableObservers();\n\t\t} );\n\t}\n\n\t/**\n\t * Creates observer of the given type if not yet created, {@link module:engine/view/observer/observer~Observer#enable enables} it\n\t * and {@link module:engine/view/observer/observer~Observer#observe attaches} to all existing and future\n\t * {@link module:engine/view/document~Document#domRoots DOM roots}.\n\t *\n\t * Note: Observers are recognized by their constructor (classes). A single observer will be instantiated and used only\n\t * when registered for the first time. This means that features and other components can register a single observer\n\t * multiple times without caring whether it has been already added or not.\n\t *\n\t * @param {Function} Observer The constructor of an observer to add.\n\t * Should create an instance inheriting from {@link module:engine/view/observer/observer~Observer}.\n\t * @returns {module:engine/view/observer/observer~Observer} Added observer instance.\n\t */\n\taddObserver( Observer ) {\n\t\tlet observer = this._observers.get( Observer );\n\n\t\tif ( observer ) {\n\t\t\treturn observer;\n\t\t}\n\n\t\tobserver = new Observer( this );\n\n\t\tthis._observers.set( Observer, observer );\n\n\t\tfor ( let [ name, domElement ] of this.domRoots ) {\n\t\t\tobserver.observe( domElement, name );\n\t\t}\n\n\t\tobserver.enable();\n\n\t\treturn observer;\n\t}\n\n\t/**\n\t * Returns observer of the given type or `undefined` if such observer has not been added yet.\n\t *\n\t * @param {Function} Observer The constructor of an observer to get.\n\t * @returns {module:engine/view/observer/observer~Observer|undefined} Observer instance or undefined.\n\t */\n\tgetObserver( Observer ) {\n\t\treturn this._observers.get( Observer );\n\t}\n\n\t/**\n\t * Creates a {@link module:engine/view/document~Document#roots view root element}.\n\t *\n\t * If the DOM element is passed as a first parameter it will be automatically\n\t * {@link module:engine/view/document~Document#attachDomRoot attached}:\n\t *\n\t *\t\tdocument.createRoot( document.querySelector( 'div#editor' ) ); // Will call document.attachDomRoot.\n\t *\n\t * However, if the string is passed, then only the view element will be created and the DOM element have to be\n\t * attached separately:\n\t *\n\t *\t\tdocument.createRoot( 'body' );\n\t *\t\tdocument.attachDomRoot( document.querySelector( 'body#editor' ) );\n\t *\n\t * In both cases, {@link module:engine/view/rooteditableelement~RootEditableElement#rootName element name} is always transformed to lower\n\t * case.\n\t *\n\t * @param {Element|String} domRoot DOM root element or the tag name of view root element if the DOM element will be\n\t * attached later.\n\t * @param {String} [name='main'] Name of the root.\n\t * @returns {module:engine/view/rooteditableelement~RootEditableElement} The created view root element.\n\t */\n\tcreateRoot( domRoot, name = 'main' ) {\n\t\tconst rootTag = typeof domRoot == 'string' ? domRoot : domRoot.tagName;\n\n\t\tconst viewRoot = new RootEditableElement( rootTag.toLowerCase(), name );\n\t\tviewRoot.document = this;\n\n\t\tthis.roots.set( name, viewRoot );\n\n\t\t// Mark changed nodes in the renderer.\n\t\tviewRoot.on( 'change:children', ( evt, node ) => this.renderer.markToSync( 'children', node ) );\n\t\tviewRoot.on( 'change:attributes', ( evt, node ) => this.renderer.markToSync( 'attributes', node ) );\n\t\tviewRoot.on( 'change:text', ( evt, node ) => this.renderer.markToSync( 'text', node ) );\n\n\t\tif ( this.domConverter.isElement( domRoot ) ) {\n\t\t\tthis.attachDomRoot( domRoot, name );\n\t\t}\n\n\t\treturn viewRoot;\n\t}\n\n\t/**\n\t * Attaches DOM root element to the view element and enable all observers on that element. This method also\n\t * {@link module:engine/view/renderer~Renderer#markToSync mark element} to be synchronized with the view what means that all child\n\t * nodes will be removed and replaced with content of the view root.\n\t *\n\t * Note that {@link module:engine/view/document~Document#createRoot} will call this method automatically if the DOM element is\n\t * passed to it.\n\t *\n\t * @param {Element|String} domRoot DOM root element.\n\t * @param {String} [name='main'] Name of the root.\n\t */\n\tattachDomRoot( domRoot, name = 'main' ) {\n\t\tconst viewRoot = this.getRoot( name );\n\n\t\tthis.domRoots.set( name, domRoot );\n\n\t\tthis.domConverter.bindElements( domRoot, viewRoot );\n\n\t\tthis.renderer.markToSync( 'children', viewRoot );\n\t\tthis.renderer.domDocuments.add( domRoot.ownerDocument );\n\n\t\tfor ( let observer of this._observers.values() ) {\n\t\t\tobserver.observe( domRoot, name );\n\t\t}\n\t}\n\n\t/**\n\t * Gets a {@link module:engine/view/document~Document#roots view root element} with the specified name. If the name is not\n\t * specific \"main\" root is returned.\n\t *\n\t * @param {String} [name='main'] Name of the root.\n\t * @returns {module:engine/view/rooteditableelement~RootEditableElement} The view root element with the specified name.\n\t */\n\tgetRoot( name = 'main' ) {\n\t\treturn this.roots.get( name );\n\t}\n\n\t/**\n\t * Gets DOM root element.\n\t *\n\t * @param {String} [name='main']  Name of the root.\n\t * @returns {Element} DOM root element instance.\n\t */\n\tgetDomRoot( name = 'main' ) {\n\t\treturn this.domRoots.get( name );\n\t}\n\n\t/**\n\t * Renders all changes. In order to avoid triggering the observers (e.g. mutations) all observers are disabled\n\t * before rendering and re-enabled after that.\n\t *\n\t * @fires render\n\t */\n\trender() {\n\t\tthis.fire( 'render' );\n\t}\n\n\t/**\n\t * Focuses document. It will focus {@link module:engine/view/editableelement~EditableElement EditableElement} that is currently having\n\t * selection inside.\n\t */\n\tfocus() {\n\t\tif ( !this.isFocused ) {\n\t\t\tconst editable = this.selection.editableElement;\n\n\t\t\tif ( editable ) {\n\t\t\t\tthis.domConverter.focus( editable );\n\t\t\t\tthis.render();\n\t\t\t} else {\n\t\t\t\t/**\n\t\t\t\t * Before focusing view document, selection should be placed inside one of the view's editables.\n\t\t\t\t * Normally its selection will be converted from model document (which have default selection), but\n\t\t\t\t * when using view document on its own, we need to manually place selection before focusing it.\n\t\t\t\t *\n\t\t\t\t * @error view-focus-no-selection\n\t\t\t\t */\n\t\t\t\tlog.warn( 'view-focus-no-selection: There is no selection in any editable to focus.' );\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Disables all added observers.\n\t */\n\tdisableObservers() {\n\t\tfor ( let observer of this._observers.values() ) {\n\t\t\tobserver.disable();\n\t\t}\n\t}\n\n\t/**\n\t * Enables all added observers.\n\t */\n\tenableObservers() {\n\t\tfor ( let observer of this._observers.values() ) {\n\t\t\tobserver.enable();\n\t\t}\n\t}\n\n\t/**\n\t * Destroys all observers created by view `Document`.\n\t */\n\tdestroy() {\n\t\tfor ( let observer of this._observers.values() ) {\n\t\t\tobserver.destroy();\n\t\t}\n\t}\n}\n\nmix( Document, ObservableMixin );\n\n/**\n * Enum representing type of the change.\n *\n * Possible values:\n *\n * * `children` - for child list changes,\n * * `attributes` - for element attributes changes,\n * * `text` - for text nodes changes.\n *\n * @typedef {String} module:engine/view/document~ChangeType\n */\n\n/**\n * Fired when {@link #render render} method is called. Actual rendering is executed as a listener to\n * this event with default priority. This way other listeners can be used to run code before or after rendering.\n *\n * @event render\n */\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/view/document.js\n// module id = 317\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/observer/clickobserver\n */\n\nimport DomEventObserver from './domeventobserver';\n\n/**\n * {@link module:engine/view/document~Document#event:click Click} event observer.\n *\n * Note that this observer is not available by default. To make it available it needs to be added to\n * {@link module:engine/view/document~Document}\n * by a {@link module:engine/view/document~Document#addObserver} method.\n *\n * @extends module:engine/view/observer/domeventobserver~DomEventObserver\n */\nexport default class ClickObserver extends DomEventObserver {\n\tconstructor( document ) {\n\t\tsuper( document );\n\n\t\tthis.domEventType = 'click';\n\t}\n\n\tonDomEvent( domEvent ) {\n\t\tthis.fire( domEvent.type, domEvent );\n\t}\n}\n\n/**\n * Fired when one of the editables has been clicked.\n *\n * Introduced by {@link module:engine/view/observer/clickobserver~ClickObserver}.\n *\n * Note that this event is not available by default. To make it available\n * {@link module:engine/view/observer/clickobserver~ClickObserver} needs to be added\n * to {@link module:engine/view/document~Document} by a {@link module:engine/view/document~Document#addObserver} method.\n *\n * @see module:engine/view/observer/clickobserver~ClickObserver\n * @event module:engine/view/document~Document#event:click\n * @param {module:engine/view/observer/domeventdata~DomEventData} data Event data.\n */\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/view/observer/clickobserver.js\n// module id = 318\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/observer/fakeselectionobserver\n */\n\nimport Observer from './observer';\nimport ViewSelection from '../selection';\nimport { keyCodes } from '@ckeditor/ckeditor5-utils/src/keyboard';\nimport debounce from '@ckeditor/ckeditor5-utils/src/lib/lodash/debounce';\n\n/**\n * Fake selection observer class. If view selection is fake it is placed in dummy DOM container. This observer listens\n * on {@link module:engine/view/document~Document#event:keydown keydown} events and handles moving fake view selection to the correct place\n * if arrow keys are pressed.\n * Fires {@link module:engine/view/document~Document#event:selectionChange selectionChange event} simulating natural behaviour of\n * {@link module:engine/view/observer/selectionobserver~SelectionObserver SelectionObserver}.\n *\n * @extends module:engine/view/observer/observer~Observer.Observer\n */\nexport default class FakeSelectionObserver extends Observer {\n\t/**\n\t * Creates new FakeSelectionObserver instance.\n\t *\n\t * @param {module:engine/view/document~Document} document\n\t */\n\tconstructor( document ) {\n\t\tsuper( document );\n\n\t\t/**\n\t\t * Fires debounced event `selectionChangeDone`. It uses `lodash#debounce` method to delay function call.\n\t\t *\n\t\t * @private\n\t\t * @param {Object} data Selection change data.\n\t\t * @method #_fireSelectionChangeDoneDebounced\n\t\t */\n\t\tthis._fireSelectionChangeDoneDebounced = debounce( data => this.document.fire( 'selectionChangeDone', data ), 200 );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tobserve() {\n\t\tconst document = this.document;\n\n\t\tdocument.on( 'keydown', ( eventInfo, data ) => {\n\t\t\tconst selection = document.selection;\n\n\t\t\tif ( selection.isFake && _isArrowKeyCode( data.keyCode ) && this.isEnabled ) {\n\t\t\t\t// Prevents default key down handling - no selection change will occur.\n\t\t\t\tdata.preventDefault();\n\n\t\t\t\tthis._handleSelectionMove( data.keyCode );\n\t\t\t}\n\t\t}, { priority: 'lowest' } );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tdestroy() {\n\t\tsuper.destroy();\n\n\t\tthis._fireSelectionChangeDoneDebounced.cancel();\n\t}\n\n\t/**\n\t * Handles collapsing view selection according to given key code. If left or up key is provided - new selection will be\n\t * collapsed to left. If right or down key is pressed - new selection will be collapsed to right.\n\t *\n\t * This method fires {@link module:engine/view/document~Document#event:selectionChange} and\n\t * {@link module:engine/view/document~Document#event:selectionChangeDone} events imitating behaviour of\n\t * {@link module:engine/view/observer/selectionobserver~SelectionObserver}.\n\t *\n\t * @private\n\t * @param {Number} keyCode\n\t * @fires module:engine/view/document~Document#event:selectionChange\n\t * @fires module:engine/view/document~Document#event:selectionChangeDone\n\t */\n\t_handleSelectionMove( keyCode ) {\n\t\tconst selection = this.document.selection;\n\t\tconst newSelection = ViewSelection.createFromSelection( selection );\n\t\tnewSelection.setFake( false );\n\n\t\t// Left or up arrow pressed - move selection to start.\n\t\tif ( keyCode == keyCodes.arrowleft || keyCode == keyCodes.arrowup ) {\n\t\t\tnewSelection.collapseToStart();\n\t\t}\n\n\t\t// Right or down arrow pressed - move selection to end.\n\t\tif ( keyCode == keyCodes.arrowright || keyCode == keyCodes.arrowdown ) {\n\t\t\tnewSelection.collapseToEnd();\n\t\t}\n\n\t\tconst data = {\n\t\t\toldSelection: selection,\n\t\t\tnewSelection: newSelection,\n\t\t\tdomSelection: null\n\t\t};\n\n\t\t// Fire dummy selection change event.\n\t\tthis.document.fire( 'selectionChange', data );\n\n\t\t// Call` #_fireSelectionChangeDoneDebounced` every time when `selectionChange` event is fired.\n\t\t// This function is debounced what means that `selectionChangeDone` event will be fired only when\n\t\t// defined int the function time will elapse since the last time the function was called.\n\t\t// So `selectionChangeDone` will be fired when selection will stop changing.\n\t\tthis._fireSelectionChangeDoneDebounced( data );\n\t}\n}\n\n// Checks if one of the arrow keys is pressed.\n//\n// @private\n// @param {Number} keyCode\n// @returns {Boolean}\nfunction _isArrowKeyCode( keyCode ) {\n\treturn keyCode == keyCodes.arrowright ||\n\t\tkeyCode == keyCodes.arrowleft ||\n\t\tkeyCode == keyCodes.arrowup ||\n\t\tkeyCode == keyCodes.arrowdown;\n}\n\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/view/observer/fakeselectionobserver.js\n// module id = 319\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/observer/focusobserver\n */\n\n/* globals setTimeout, clearTimeout */\n\nimport DomEventObserver from './domeventobserver';\n\n/**\n * {@link module:engine/view/document~Document#event:focus Focus}\n * and {@link module:engine/view/document~Document#event:blur blur} events observer.\n * Focus observer handle also {@link module:engine/view/rooteditableelement~RootEditableElement#isFocused isFocused} property of the\n * {@link module:engine/view/rooteditableelement~RootEditableElement root elements}.\n *\n * Note that this observer is attached by the {@link module:engine/view/document~Document} and is available by default.\n *\n * @extends module:engine/view/observer/domeventobserver~DomEventObserver\n */\nexport default class FocusObserver extends DomEventObserver {\n\tconstructor( document ) {\n\t\tsuper( document );\n\n\t\tthis.domEventType = [ 'focus', 'blur' ];\n\t\tthis.useCapture = true;\n\n\t\tdocument.on( 'focus', () => {\n\t\t\tdocument.isFocused = true;\n\n\t\t\t// Unfortunately native `selectionchange` event is fired asynchronously.\n\t\t\t// We need to wait until `SelectionObserver` handle the event and then render. Otherwise rendering will\n\t\t\t// overwrite new DOM selection with selection from the view.\n\t\t\t// See https://github.com/ckeditor/ckeditor5-engine/issues/795 for more details.\n\t\t\tthis._renderTimeoutId = setTimeout( () => document.render(), 0 );\n\t\t} );\n\n\t\tdocument.on( 'blur', ( evt, data ) => {\n\t\t\tconst selectedEditable = document.selection.editableElement;\n\n\t\t\tif ( selectedEditable === null || selectedEditable === data.target ) {\n\t\t\t\tdocument.isFocused = false;\n\n\t\t\t\t// Re-render the document to update view elements.\n\t\t\t\tdocument.render();\n\t\t\t}\n\t\t} );\n\n\t\t/**\n\t\t * Identifier of the timeout currently used by focus listener to delay rendering execution.\n\t\t *\n\t\t * @private\n\t\t * @member {Number} #_renderTimeoutId\n\t\t */\n\t}\n\n\tonDomEvent( domEvent ) {\n\t\tthis.fire( domEvent.type, domEvent );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tdestroy() {\n\t\tif ( this._renderTimeoutId ) {\n\t\t\tclearTimeout( this._renderTimeoutId );\n\t\t}\n\n\t\tsuper.destroy();\n\t}\n}\n\n/**\n * Fired when one of the editables gets focus.\n *\n * Introduced by {@link module:engine/view/observer/focusobserver~FocusObserver}.\n *\n * Note that because {@link module:engine/view/observer/focusobserver~FocusObserver} is attached by the\n * {@link module:engine/view/document~Document}\n * this event is available by default.\n *\n * @see module:engine/view/observer/focusobserver~FocusObserver\n * @event module:engine/view/document~Document#event:focus\n * @param {module:engine/view/observer/domeventdata~DomEventData} data Event data.\n */\n\n/**\n * Fired when one of the editables loses focus.\n *\n * Introduced by {@link module:engine/view/observer/focusobserver~FocusObserver}.\n *\n * Note that because {@link module:engine/view/observer/focusobserver~FocusObserver} is attached by the\n * {@link module:engine/view/document~Document}\n * this event is available by default.\n *\n * @see module:engine/view/observer/focusobserver~FocusObserver\n * @event module:engine/view/document~Document#event:blur\n * @param {module:engine/view/observer/domeventdata~DomEventData} data Event data.\n */\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/view/observer/focusobserver.js\n// module id = 320\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/observer/keyobserver\n */\n\nimport DomEventObserver from './domeventobserver';\nimport { getCode } from '@ckeditor/ckeditor5-utils/src/keyboard';\n\n/**\n * {@link module:engine/view/document~Document#event:keydown Key down} event observer.\n *\n * Note that this observer is attached by the {@link module:engine/view/document~Document} and is available by default.\n *\n * @extends module:engine/view/observer/domeventobserver~DomEventObserver\n */\nexport default class KeyObserver extends DomEventObserver {\n\tconstructor( document ) {\n\t\tsuper( document );\n\n\t\tthis.domEventType = 'keydown';\n\t}\n\n\tonDomEvent( domEvt ) {\n\t\tthis.fire( 'keydown', domEvt, {\n\t\t\tkeyCode: domEvt.keyCode,\n\n\t\t\taltKey: domEvt.altKey,\n\t\t\tctrlKey: domEvt.ctrlKey || domEvt.metaKey,\n\t\t\tshiftKey: domEvt.shiftKey,\n\n\t\t\tget keystroke() {\n\t\t\t\treturn getCode( this );\n\t\t\t}\n\t\t} );\n\t}\n}\n\n/**\n * Fired when a key has been pressed.\n *\n * Introduced by {@link module:engine/view/observer/keyobserver~KeyObserver}.\n *\n * Note that because {@link module:engine/view/observer/keyobserver~KeyObserver} is attached by the\n * {@link module:engine/view/document~Document}\n * this event is available by default.\n *\n * @see module:engine/view/observer/keyobserver~KeyObserver\n * @event module:engine/view/document~Document#event:keydown\n * @param {module:engine/view/observer/keyobserver~KeyEventData} keyEventData\n */\n\n/**\n * The value of the {@link module:engine/view/document~Document#event:keydown} event.\n *\n * @class module:engine/view/observer/keyobserver~KeyEventData\n * @extends module:engine/view/observer/domeventdata~DomEventData\n * @implements module:utils/keyboard~KeystrokeInfo\n */\n\n/**\n * Code of the whole keystroke. See {@link module:utils/keyboard~getCode}.\n *\n * @readonly\n * @member {Number} module:engine/view/observer/keyobserver~KeyEventData#keystroke\n */\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/view/observer/keyobserver.js\n// module id = 321\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/observer/mouseobserver\n */\n\nimport DomEventObserver from './domeventobserver';\n\n/**\n * Mouse events observer.\n *\n * Note that this observer is not available by default. To make it available it needs to be added to\n * {@link module:engine/view/document~Document}\n * by {@link module:engine/view/document~Document#addObserver} method.\n *\n * @extends module:engine/view/observer/domeventobserver~DomEventObserver\n */\nexport default class MouseObserver extends DomEventObserver {\n\tconstructor( document ) {\n\t\tsuper( document );\n\n\t\tthis.domEventType = 'mousedown';\n\t}\n\n\tonDomEvent( domEvent ) {\n\t\tthis.fire( domEvent.type, domEvent );\n\t}\n}\n\n/**\n * Fired when mouse button is pressed down on one of the editables.\n *\n * Introduced by {@link module:engine/view/observer/mouseobserver~MouseObserver}.\n *\n * Note that this event is not available by default. To make it available {@link module:engine/view/observer/mouseobserver~MouseObserver}\n * needs to be added to {@link module:engine/view/document~Document} by a {@link module:engine/view/document~Document#addObserver} method.\n *\n * @see module:engine/view/observer/mouseobserver~MouseObserver\n * @event module:engine/view/document~Document#event:mousedown\n * @param {module:engine/view/observer/domeventdata~DomEventData} data Event data.\n */\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/view/observer/mouseobserver.js\n// module id = 322\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/observer/selectionobserver\n */\n\n/* global setInterval, clearInterval */\n\nimport Observer from './observer';\nimport MutationObserver from './mutationobserver';\nimport log from '@ckeditor/ckeditor5-utils/src/log';\nimport debounce from '@ckeditor/ckeditor5-utils/src/lib/lodash/debounce';\n\n/**\n * Selection observer class observes selection changes in the document. If selection changes on the document this\n * observer checks if there are any mutations and if DOM selection is different than the\n * {@link module:engine/view/document~Document#selection view selection}. Selection observer fires\n * {@link module:engine/view/document~Document#event:selectionChange} event only if selection change was the only change in the document\n * and DOM selection is different then the view selection.\n *\n * Note that this observer is attached by the {@link module:engine/view/document~Document} and is available by default.\n *\n * @see module:engine/view/observer/mutationobserver~MutationObserver\n * @extends module:engine/view/observer/observer~Observer\n */\nexport default class SelectionObserver extends Observer {\n\tconstructor( document ) {\n\t\tsuper( document );\n\n\t\t/**\n\t\t * Instance of the mutation observer. Selection observer calls\n\t\t * {@link module:engine/view/observer/mutationobserver~MutationObserver#flush} to ensure that the mutations will be handled before the\n\t\t * {@link module:engine/view/document~Document#event:selectionChange} event is fired.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/view/observer/mutationobserver~MutationObserver}\n\t\t * module:engine/view/observer/selectionobserver~SelectionObserver#mutationObserver\n\t\t */\n\t\tthis.mutationObserver = document.getObserver( MutationObserver );\n\n\t\t/**\n\t\t * Reference to the {@link module:engine/view/document~Document} object.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/view/document~Document} module:engine/view/observer/selectionobserver~SelectionObserver#document\n\t\t */\n\t\tthis.document = document;\n\n\t\t/**\n\t\t * Reference to the view {@link module:engine/view/selection~Selection} object used to compare new selection with it.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/view/selection~Selection} module:engine/view/observer/selectionobserver~SelectionObserver#selection\n\t\t */\n\t\tthis.selection = document.selection;\n\n\t\t/**\n\t\t * Reference to the {@link module:engine/view/document~Document#domConverter}.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/view/domconverter~DomConverter} module:engine/view/observer/selectionobserver~SelectionObserver#domConverter\n\t\t */\n\t\tthis.domConverter = document.domConverter;\n\n\t\t/**\n\t\t * Set of documents which have added \"selectionchange\" listener to avoid adding listener twice to the same\n\t\t * document.\n\t\t *\n\t\t * @private\n\t\t * @member {WeakSet.<Document>} module:engine/view/observer/selectionobserver~SelectionObserver#_documents\n\t\t */\n\t\tthis._documents = new WeakSet();\n\n\t\t/**\n\t\t * Fires debounced event `selectionChangeDone`. It uses `lodash#debounce` method to delay function call.\n\t\t *\n\t\t * @private\n\t\t * @param {Object} data Selection change data.\n\t\t * @method #_fireSelectionChangeDoneDebounced\n\t\t */\n\t\tthis._fireSelectionChangeDoneDebounced = debounce( data => this.document.fire( 'selectionChangeDone', data ), 200 );\n\n\t\tthis._clearInfiniteLoopInterval = setInterval( () => this._clearInfiniteLoop(), 1000 );\n\n\t\t/**\n\t\t * Private property to check if the code does not enter infinite loop.\n\t\t *\n\t\t * @private\n\t\t * @member {Number} module:engine/view/observer/selectionobserver~SelectionObserver#_loopbackCounter\n\t\t */\n\t\tthis._loopbackCounter = 0;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tobserve( domElement ) {\n\t\tconst domDocument = domElement.ownerDocument;\n\n\t\t// Add listener once per each document.\n\t\tif ( this._documents.has( domDocument ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\tthis.listenTo( domDocument, 'selectionchange', () => {\n\t\t\tthis._handleSelectionChange( domDocument );\n\t\t} );\n\n\t\tthis._documents.add( domDocument );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tdestroy() {\n\t\tsuper.destroy();\n\n\t\tclearInterval( this._clearInfiniteLoopInterval );\n\t\tthis._fireSelectionChangeDoneDebounced.cancel();\n\t}\n\n\t/**\n\t * Selection change listener. {@link module:engine/view/observer/mutationobserver~MutationObserver#flush Flush} mutations, check if\n\t * selection changes and fires {@link module:engine/view/document~Document#event:selectionChange} event on every change\n\t * and {@link module:engine/view/document~Document#event:selectionChangeDone} when selection stop changing.\n\t *\n\t * @private\n\t * @param {Document} domDocument DOM document.\n\t */\n\t_handleSelectionChange( domDocument ) {\n\t\tif ( !this.isEnabled || !this.document.isFocused ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Ensure the mutation event will be before selection event on all browsers.\n\t\tthis.mutationObserver.flush();\n\n\t\t// If there were mutations then the view will be re-rendered by the mutation observer and selection\n\t\t// will be updated, so selections will equal and event will not be fired, as expected.\n\t\tconst domSelection = domDocument.defaultView.getSelection();\n\t\tconst newViewSelection = this.domConverter.domSelectionToView( domSelection );\n\n\t\tif ( this.selection.isEqual( newViewSelection ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Ensure we are not in the infinite loop (#400).\n\t\t// This counter is reset each second. 60 selection changes in 1 second is enough high number\n\t\t// to be very difficult (impossible) to achieve using just keyboard keys (during normal editor use).\n\t\tif ( ++this._loopbackCounter > 60 ) {\n\t\t\t/**\n\t\t\t * Selection change observer detected an infinite rendering loop.\n\t\t\t * Most probably you try to put the selection in the position which is not allowed\n\t\t\t * by the browser and browser fixes it automatically what causes `selectionchange` event on\n\t\t\t * which a loopback through a model tries to re-render the wrong selection and again.\n\t\t\t *\n\t\t\t * @error selectionchange-infinite-loop\n\t\t\t */\n\t\t\tlog.warn( 'selectionchange-infinite-loop: Selection change observer detected an infinite rendering loop.' );\n\n\t\t\treturn;\n\t\t}\n\n\t\tconst data = {\n\t\t\toldSelection: this.selection,\n\t\t\tnewSelection: newViewSelection,\n\t\t\tdomSelection: domSelection\n\t\t};\n\n\t\t// Should be fired only when selection change was the only document change.\n\t\tthis.document.fire( 'selectionChange', data );\n\n\t\t// Call` #_fireSelectionChangeDoneDebounced` every time when `selectionChange` event is fired.\n\t\t// This function is debounced what means that `selectionChangeDone` event will be fired only when\n\t\t// defined int the function time will elapse since the last time the function was called.\n\t\t// So `selectionChangeDone` will be fired when selection will stop changing.\n\t\tthis._fireSelectionChangeDoneDebounced( data );\n\t}\n\n\t/**\n\t * Clears `SelectionObserver` internal properties connected with preventing infinite loop.\n\t *\n\t * @protected\n\t */\n\t_clearInfiniteLoop() {\n\t\tthis._loopbackCounter = 0;\n\t}\n}\n\n/**\n * Fired when selection has changed. This event is fired only when the selection change was the only change that happened\n * in the document, and old selection is different then the new selection.\n *\n * Introduced by {@link module:engine/view/observer/selectionobserver~SelectionObserver}.\n *\n * Note that because {@link module:engine/view/observer/selectionobserver~SelectionObserver} is attached by the\n * {@link module:engine/view/document~Document}\n * this event is available by default.\n *\n * @see module:engine/view/observer/selectionobserver~SelectionObserver\n * @event module:engine/view/document~Document#event:selectionChange\n * @param {Object} data\n * @param {module:engine/view/selection~Selection} data.oldSelection Old View selection which is\n * {@link module:engine/view/document~Document#selection}.\n * @param {module:engine/view/selection~Selection} data.newSelection New View selection which is converted DOM selection.\n * @param {Selection} data.domSelection Native DOM selection.\n */\n\n/**\n * Fired when selection stops changing.\n *\n * Introduced by {@link module:engine/view/observer/selectionobserver~SelectionObserver}.\n *\n * Note that because {@link module:engine/view/observer/selectionobserver~SelectionObserver} is attached by the\n * {@link module:engine/view/document~Document}\n * this event is available by default.\n *\n * @see module:engine/view/observer/selectionobserver~SelectionObserver\n * @event module:engine/view/document~Document#event:selectionChangeDone\n * @param {Object} data\n * @param {module:engine/view/selection~Selection} data.oldSelection Old View selection which is\n * {@link module:engine/view/document~Document#selection}.\n * @param {module:engine/view/selection~Selection} data.newSelection New View selection which is converted DOM selection.\n * @param {Selection} data.domSelection Native DOM selection.\n */\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/view/observer/selectionobserver.js\n// module id = 323\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/placeholder\n */\n\nimport extend from '@ckeditor/ckeditor5-utils/src/lib/lodash/extend';\nimport EmitterMixin from '@ckeditor/ckeditor5-utils/src/emittermixin';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\nimport '../../theme/placeholder.scss';\n\nconst listener = {};\nextend( listener, EmitterMixin );\n\n// Each document stores information about its placeholder elements and check functions.\nconst documentPlaceholders = new WeakMap();\n\n/**\n * Attaches placeholder to provided element and updates it's visibility. To change placeholder simply call this method\n * once again with new parameters.\n *\n * @param {module:engine/view/element~Element} element Element to attach placeholder to.\n * @param {String} placeholderText Placeholder text to use.\n * @param {Function} [checkFunction] If provided it will be called before checking if placeholder should be displayed.\n * If function returns `false` placeholder will not be showed.\n */\nexport function attachPlaceholder( element, placeholderText, checkFunction ) {\n\tconst document = element.document;\n\n\tif ( !document ) {\n\t\t/**\n\t\t * Provided element is not placed in any {@link module:engine/view/document~Document}.\n\t\t *\n\t\t * @error view-placeholder-element-is-detached\n\t\t */\n\t\tthrow new CKEditorError( 'view-placeholder-element-is-detached: Provided element is not placed in document.' );\n\t}\n\n\t// Detach placeholder if was used before.\n\tdetachPlaceholder( element );\n\n\t// Single listener per document.\n\tif ( !documentPlaceholders.has( document ) ) {\n\t\tdocumentPlaceholders.set( document, new Map() );\n\t\tlistener.listenTo( document, 'render', () => updateAllPlaceholders( document ), { priority: 'high' } );\n\t}\n\n\t// Store text in element's data attribute.\n\t// This data attribute is used in CSS class to show the placeholder.\n\telement.setAttribute( 'data-placeholder', placeholderText );\n\n\t// Store information about placeholder.\n\tdocumentPlaceholders.get( document ).set( element, checkFunction );\n\n\t// Update right away too.\n\tupdateSinglePlaceholder( element, checkFunction );\n}\n\n/**\n * Removes placeholder functionality from given element.\n *\n * @param {module:engine/view/element~Element} element\n */\nexport function detachPlaceholder( element ) {\n\tconst document = element.document;\n\n\telement.removeClass( 'ck-placeholder' );\n\telement.removeAttribute( 'data-placeholder' );\n\n\tif ( documentPlaceholders.has( document ) ) {\n\t\tdocumentPlaceholders.get( document ).delete( element );\n\t}\n}\n\n// Updates all placeholders of given document.\n//\n// @private\n// @param {module:engine/view/document~Document} document\nfunction updateAllPlaceholders( document ) {\n\tconst placeholders = documentPlaceholders.get( document );\n\n\tfor ( let [ element, checkFunction ] of placeholders ) {\n\t\tupdateSinglePlaceholder( element, checkFunction );\n\t}\n}\n\n// Updates placeholder class of given element.\n//\n// @private\n// @param {module:engine/view/element~Element} element\n// @param {Function} checkFunction\nfunction updateSinglePlaceholder( element, checkFunction ) {\n\tconst document = element.document;\n\n\t// Element was removed from document.\n\tif ( !document ) {\n\t\treturn;\n\t}\n\n\tconst viewSelection = document.selection;\n\tconst anchor = viewSelection.anchor;\n\n\t// If checkFunction is provided and returns false - remove placeholder.\n\tif ( checkFunction && !checkFunction() ) {\n\t\telement.removeClass( 'ck-placeholder' );\n\n\t\treturn;\n\t}\n\n\t// If element is empty and editor is blurred.\n\tif ( !document.isFocused && !element.childCount ) {\n\t\telement.addClass( 'ck-placeholder' );\n\n\t\treturn;\n\t}\n\n\t// It there are no child elements and selection is not placed inside element.\n\tif ( !element.childCount && anchor && anchor.parent !== element ) {\n\t\telement.addClass( 'ck-placeholder' );\n\t} else {\n\t\telement.removeClass( 'ck-placeholder' );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/view/placeholder.js\n// module id = 324\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/renderer\n */\n\nimport ViewText from './text';\nimport ViewPosition from './position';\nimport Selection from './selection';\nimport { INLINE_FILLER, INLINE_FILLER_LENGTH, startsWithFiller, isInlineFiller, isBlockFiller } from './filler';\n\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\nimport diff from '@ckeditor/ckeditor5-utils/src/diff';\nimport insertAt from '@ckeditor/ckeditor5-utils/src/dom/insertat';\nimport remove from '@ckeditor/ckeditor5-utils/src/dom/remove';\nimport log from '@ckeditor/ckeditor5-utils/src/log';\nimport ObservableMixin from '@ckeditor/ckeditor5-utils/src/observablemixin';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/* global Range */\n\n/**\n * Renderer updates DOM structure and selection, to make them a reflection of the view structure and selection.\n *\n * View nodes which may need to be rendered needs to be {@link module:engine/view/renderer~Renderer#markToSync marked}.\n * Then, on {@link module:engine/view/renderer~Renderer#render render}, renderer compares the view nodes with the DOM nodes\n * in order to check which ones really need to be refreshed. Finally, it creates DOM nodes from these view nodes,\n * {@link module:engine/view/domconverter~DomConverter#bindElements binds} them and inserts into the DOM tree.\n *\n * Every time {@link module:engine/view/renderer~Renderer#render render} is called, renderer additionally checks if\n * {@link module:engine/view/renderer~Renderer#selection selection} needs update and updates it if so.\n *\n * Renderer uses {@link module:engine/view/domconverter~DomConverter} to transform and bind nodes.\n */\nexport default class Renderer {\n\t/**\n\t * Creates a renderer instance.\n\t *\n\t * @param {module:engine/view/domconverter~DomConverter} domConverter Converter instance.\n\t * @param {module:engine/view/selection~Selection} selection View selection.\n\t */\n\tconstructor( domConverter, selection ) {\n\t\t/**\n\t\t * Set of DOM Documents instances.\n\t\t *\n\t\t * @member {Set.<Document>}\n\t\t */\n\t\tthis.domDocuments = new Set();\n\n\t\t/**\n\t\t * Converter instance.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/view/domconverter~DomConverter}\n\t\t */\n\t\tthis.domConverter = domConverter;\n\n\t\t/**\n\t\t * Set of nodes which attributes changed and may need to be rendered.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Set.<module:engine/view/node~Node>}\n\t\t */\n\t\tthis.markedAttributes = new Set();\n\n\t\t/**\n\t\t * Set of elements which child lists changed and may need to be rendered.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Set.<module:engine/view/node~Node>}\n\t\t */\n\t\tthis.markedChildren = new Set();\n\n\t\t/**\n\t\t * Set of text nodes which text data changed and may need to be rendered.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Set.<module:engine/view/node~Node>}\n\t\t */\n\t\tthis.markedTexts = new Set();\n\n\t\t/**\n\t\t * View selection. Renderer updates DOM Selection to make it match this one.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/view/selection~Selection}\n\t\t */\n\t\tthis.selection = selection;\n\n\t\t/**\n\t\t * The text node in which the inline filler was rendered.\n\t\t *\n\t\t * @private\n\t\t * @member {Text}\n\t\t */\n\t\tthis._inlineFiller = null;\n\n\t\t/**\n\t\t * Indicates if view document is focused and selection can be rendered. Selection will not be rendered if\n\t\t * this is set to `false`.\n\t\t *\n\t\t * @member {Boolean}\n\t\t */\n\t\tthis.isFocused = false;\n\n\t\t/**\n\t\t * DOM element containing fake selection.\n\t\t *\n\t\t * @private\n\t\t * @type {null|HTMLElement}\n\t\t */\n\t\tthis._fakeSelectionContainer = null;\n\t}\n\n\t/**\n\t * Mark node to be synchronized.\n\t *\n\t * Note that only view nodes which parents have corresponding DOM elements need to be marked to be synchronized.\n\t *\n\t * @see #markedAttributes\n\t * @see #markedChildren\n\t * @see #markedTexts\n\t *\n\t * @param {module:engine/view/document~ChangeType} type Type of the change.\n\t * @param {module:engine/view/node~Node} node Node to be marked.\n\t */\n\tmarkToSync( type, node ) {\n\t\tif ( type === 'text' ) {\n\t\t\tif ( this.domConverter.getCorrespondingDom( node.parent ) ) {\n\t\t\t\tthis.markedTexts.add( node );\n\t\t\t}\n\t\t} else {\n\t\t\t// If the node has no DOM element it is not rendered yet,\n\t\t\t// its children/attributes do not need to be marked to be sync.\n\t\t\tif ( !this.domConverter.getCorrespondingDom( node ) ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tif ( type === 'attributes' ) {\n\t\t\t\tthis.markedAttributes.add( node );\n\t\t\t} else if ( type === 'children' ) {\n\t\t\t\tthis.markedChildren.add( node );\n\t\t\t} else {\n\t\t\t\t/**\n\t\t\t\t * Unknown type passed to Renderer.markToSync.\n\t\t\t\t *\n\t\t\t\t * @error renderer-unknown-type\n\t\t\t\t */\n\t\t\t\tthrow new CKEditorError( 'view-renderer-unknown-type: Unknown type passed to Renderer.markToSync.' );\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Render method checks {@link #markedAttributes},\n\t * {@link #markedChildren} and {@link #markedTexts} and updates all\n\t * nodes which need to be updated. Then it clears all three sets. Also, every time render is called it compares and\n\t * if needed updates the selection.\n\t *\n\t * Renderer tries not to break text composition (e.g. IME) and x-index of the selection,\n\t * so it does as little as it is needed to update the DOM.\n\t *\n\t * For attributes it adds new attributes to DOM elements, updates values and removes\n\t * attributes which do not exist in the view element.\n\t *\n\t * For text nodes it updates the text string if it is different. Note that if parent element is marked as an element\n\t * which changed child list, text node update will not be done, because it may not be possible do find a\n\t * {@link module:engine/view/domconverter~DomConverter#getCorrespondingDomText corresponding DOM text}. The change will be handled\n\t * in the parent element.\n\t *\n\t * For elements, which child lists have changed, it calculates a {@link module:utils/diff~diff} and adds or removes children which have\n\t * changed.\n\t *\n\t * Rendering also handles {@link module:engine/view/filler fillers}. Especially, it checks if the inline filler is needed\n\t * at selection position and adds or removes it. To prevent breaking text composition inline filler will not be\n\t * removed as long selection is in the text node which needed it at first.\n\t */\n\trender() {\n\t\tlet inlineFillerPosition;\n\n\t\t// There was inline filler rendered in the DOM but it's not\n\t\t// at the selection position any more, so we can remove it\n\t\t// (cause even if it's needed, it must be placed in another location).\n\t\tif ( this._inlineFiller && !this._isSelectionInInlineFiller() ) {\n\t\t\tthis._removeInlineFiller();\n\t\t}\n\n\t\t// If we've got the filler, let's try to guess its position in the view.\n\t\tif ( this._inlineFiller ) {\n\t\t\tinlineFillerPosition = this._getInlineFillerPosition();\n\t\t}\n\t\t// Othewise, if it's needed, create it at the selection position.\n\t\telse if ( this._needsInlineFillerAtSelection() ) {\n\t\t\tinlineFillerPosition = this.selection.getFirstPosition();\n\n\t\t\t// Do not use `markToSync` so it will be added even if the parent is already added.\n\t\t\tthis.markedChildren.add( inlineFillerPosition.parent );\n\t\t}\n\n\t\tfor ( let node of this.markedTexts ) {\n\t\t\tif ( !this.markedChildren.has( node.parent ) && this.domConverter.getCorrespondingDom( node.parent ) ) {\n\t\t\t\tthis._updateText( node, { inlineFillerPosition } );\n\t\t\t}\n\t\t}\n\n\t\tfor ( let element of this.markedAttributes ) {\n\t\t\tthis._updateAttrs( element );\n\t\t}\n\n\t\tfor ( let element of this.markedChildren ) {\n\t\t\tthis._updateChildren( element, { inlineFillerPosition } );\n\t\t}\n\n\t\tthis._updateSelection();\n\t\tthis._updateFocus();\n\n\t\tthis.markedTexts.clear();\n\t\tthis.markedAttributes.clear();\n\t\tthis.markedChildren.clear();\n\n\t\t// Remember the filler by its node.\n\t\tthis._inlineFiller = this._getInlineFillerNode( inlineFillerPosition );\n\t}\n\n\t/**\n\t * Gets the text node in which the inline filler is kept.\n\t *\n\t * @private\n\t * @param {module:engine/view/position~Position} fillerPosition The position on which the filler is needed in the view.\n\t * @returns {Text} The text node with the filler.\n\t */\n\t_getInlineFillerNode( fillerPosition ) {\n\t\tif ( !fillerPosition ) {\n\t\t\tthis._inlineFiller = null;\n\n\t\t\treturn;\n\t\t}\n\n\t\tconst domPosition = this.domConverter.viewPositionToDom( fillerPosition );\n\n\t\t/* istanbul ignore if */\n\t\tif ( !domPosition || !startsWithFiller( domPosition.parent ) ) {\n\t\t\t/**\n\t\t\t * Cannot find filler node by its position.\n\t\t\t *\n\t\t\t * @error view-renderer-cannot-find-filler\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'view-renderer-cannot-find-filler: Cannot find filler node by its position.' );\n\t\t}\n\n\t\treturn domPosition.parent;\n\t}\n\n\t/**\n\t * Gets the position of the inline filler based on the current selection.\n\t * Here, we assume that we know that the filler is needed and\n\t * {@link #_isSelectionInInlineFiller is at the selection position}, and, since it's needed,\n\t * it's somewhere at the selection postion.\n\t *\n\t * Note: we cannot restore the filler position based on the filler's DOM text node, because\n\t * when this method is called (before rendering) the bindings will often be broken. View to DOM\n\t * bindings are only dependable after rendering.\n\t *\n\t * @private\n\t * @returns {module:engine/view/position~Position}\n\t */\n\t_getInlineFillerPosition() {\n\t\tconst firstPos = this.selection.getFirstPosition();\n\n\t\tif ( firstPos.parent.is( 'text' ) ) {\n\t\t\treturn ViewPosition.createBefore( this.selection.getFirstPosition().parent );\n\t\t} else {\n\t\t\treturn firstPos;\n\t\t}\n\t}\n\n\t/**\n\t * Returns `true` if the selection hasn't left the inline filler's text node.\n\t * If it is `true` it means that the filler had been added for a reason and the selection does not\n\t * left the filler's text node. E.g. the user can be in the middle of a composition so it should not be touched.\n\t *\n\t * @private\n\t * @returns {Boolean} True if the inline filler and selection are in the same place.\n\t */\n\t_isSelectionInInlineFiller() {\n\t\tif ( this.selection.rangeCount != 1 || !this.selection.isCollapsed ) {\n\t\t\treturn false;\n\t\t}\n\n\t\t// Note, we can't check if selection's position equals position of the\n\t\t// this._inlineFiller node, because of #663. We may not be able to calculate\n\t\t// the filler's position in the view at this stage.\n\t\t// Instead, we check it the other way – whether selection is anchored in\n\t\t// that text node or next to it.\n\n\t\t// Possible options are:\n\t\t// \"FILLER{}\"\n\t\t// \"FILLERadded-text{}\"\n\t\tconst selectionPosition = this.selection.getFirstPosition();\n\t\tconst position = this.domConverter.viewPositionToDom( selectionPosition );\n\n\t\tif ( position && this.domConverter.isText( position.parent ) && startsWithFiller( position.parent ) ) {\n\t\t\treturn true;\n\t\t}\n\n\t\treturn false;\n\t}\n\n\t/**\n\t * Removes the inline filler.\n\t *\n\t * @private\n\t */\n\t_removeInlineFiller() {\n\t\tconst domFillerNode = this._inlineFiller;\n\n\t\t// Something weird happened and the stored node doesn't contain the filler's text.\n\t\tif ( !startsWithFiller( domFillerNode ) ) {\n\t\t\t/**\n\t\t\t * The inline filler node was lost. Most likely, something overwrote the filler text node\n\t\t\t * in the DOM.\n\t\t\t *\n\t\t\t * @error view-renderer-filler-was-lost\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'view-renderer-filler-was-lost: The inline filler node was lost.' );\n\t\t}\n\n\t\tif ( isInlineFiller( domFillerNode ) ) {\n\t\t\tdomFillerNode.parentNode.removeChild( domFillerNode );\n\t\t} else {\n\t\t\tdomFillerNode.data = domFillerNode.data.substr( INLINE_FILLER_LENGTH );\n\t\t}\n\n\t\tthis._inlineFiller = null;\n\t}\n\n\t/**\n\t * Checks if the inline {@link module:engine/view/filler filler} should be added.\n\t *\n\t * @private\n\t * @returns {Boolean} True if the inline fillers should be added.\n\t */\n\t_needsInlineFillerAtSelection() {\n\t\tif ( this.selection.rangeCount != 1 || !this.selection.isCollapsed ) {\n\t\t\treturn false;\n\t\t}\n\n\t\tconst selectionPosition = this.selection.getFirstPosition();\n\t\tconst selectionParent = selectionPosition.parent;\n\t\tconst selectionOffset = selectionPosition.offset;\n\n\t\t// If there is no DOM root we do not care about fillers.\n\t\tif ( !this.domConverter.getCorrespondingDomElement( selectionParent.root ) ) {\n\t\t\treturn false;\n\t\t}\n\n\t\tif ( !( selectionParent.is( 'element' ) ) ) {\n\t\t\treturn false;\n\t\t}\n\n\t\t// We have block filler, we do not need inline one.\n\t\tif ( selectionOffset === selectionParent.getFillerOffset() ) {\n\t\t\treturn false;\n\t\t}\n\n\t\tconst nodeBefore = selectionPosition.nodeBefore;\n\t\tconst nodeAfter = selectionPosition.nodeAfter;\n\n\t\tif ( nodeBefore instanceof ViewText || nodeAfter instanceof ViewText ) {\n\t\t\treturn false;\n\t\t}\n\n\t\treturn true;\n\t}\n\n\t/**\n\t * Checks if text needs to be updated and possibly updates it.\n\t *\n\t * @private\n\t * @param {module:engine/view/text~Text} viewText View text to update.\n\t * @param {Object} options\n\t * @param {module:engine/view/position~Position} options.inlineFillerPosition The position on which the inline\n\t * filler should be rendered.\n\t */\n\t_updateText( viewText, options ) {\n\t\tconst domText = this.domConverter.getCorrespondingDom( viewText );\n\t\tconst newDomText = this.domConverter.viewToDom( viewText, domText.ownerDocument );\n\n\t\tconst actualText = domText.data;\n\t\tlet expectedText = newDomText.data;\n\n\t\tconst filler = options.inlineFillerPosition;\n\n\t\tif ( filler && filler.parent == viewText.parent && filler.offset == viewText.index ) {\n\t\t\texpectedText = INLINE_FILLER + expectedText;\n\t\t}\n\n\t\tif ( actualText != expectedText ) {\n\t\t\tdomText.data = expectedText;\n\t\t}\n\t}\n\n\t/**\n\t * Checks if attributes list needs to be updated and possibly updates it.\n\t *\n\t * @private\n\t * @param {module:engine/view/element~Element} viewElement View element to update.\n\t */\n\t_updateAttrs( viewElement ) {\n\t\tconst domElement = this.domConverter.getCorrespondingDom( viewElement );\n\t\tconst domAttrKeys = Array.from( domElement.attributes ).map( attr => attr.name );\n\t\tconst viewAttrKeys = viewElement.getAttributeKeys();\n\n\t\t// Add or overwrite attributes.\n\t\tfor ( let key of viewAttrKeys ) {\n\t\t\tdomElement.setAttribute( key, viewElement.getAttribute( key ) );\n\t\t}\n\n\t\t// Remove from DOM attributes which do not exists in the view.\n\t\tfor ( let key of domAttrKeys ) {\n\t\t\tif ( !viewElement.hasAttribute( key ) ) {\n\t\t\t\tdomElement.removeAttribute( key );\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Checks if elements child list needs to be updated and possibly updates it.\n\t *\n\t * @private\n\t * @param {module:engine/view/element~Element} viewElement View element to update.\n\t * @param {Object} options\n\t * @param {module:engine/view/position~Position} options.inlineFillerPosition The position on which the inline\n\t * filler should be rendered.\n\t */\n\t_updateChildren( viewElement, options ) {\n\t\tconst domConverter = this.domConverter;\n\t\tconst domElement = domConverter.getCorrespondingDom( viewElement );\n\n\t\tif ( !domElement ) {\n\t\t\t// If there is no `domElement` it means that it was already removed from DOM.\n\t\t\t// There is no need to update it. It will be updated when re-inserted.\n\t\t\treturn;\n\t\t}\n\n\t\tconst domDocument = domElement.ownerDocument;\n\n\t\tconst filler = options.inlineFillerPosition;\n\n\t\tconst actualDomChildren = domElement.childNodes;\n\t\tconst expectedDomChildren = Array.from( domConverter.viewChildrenToDom( viewElement, domDocument, { bind: true } ) );\n\n\t\tif ( filler && filler.parent == viewElement ) {\n\t\t\tconst expectedNodeAfterFiller = expectedDomChildren[ filler.offset ];\n\n\t\t\tif ( this.domConverter.isText( expectedNodeAfterFiller ) ) {\n\t\t\t\texpectedNodeAfterFiller.data = INLINE_FILLER + expectedNodeAfterFiller.data;\n\t\t\t} else {\n\t\t\t\texpectedDomChildren.splice( filler.offset, 0, domDocument.createTextNode( INLINE_FILLER ) );\n\t\t\t}\n\t\t}\n\n\t\tconst actions = diff( actualDomChildren, expectedDomChildren, sameNodes );\n\n\t\tlet i = 0;\n\n\t\tfor ( let action of actions ) {\n\t\t\tif ( action === 'insert' ) {\n\t\t\t\tinsertAt( domElement, i, expectedDomChildren[ i ] );\n\t\t\t\ti++;\n\t\t\t} else if ( action === 'delete' ) {\n\t\t\t\t// Whenever element is removed from DOM, unbind it and all of its children.\n\t\t\t\tthis.domConverter.unbindDomElement( actualDomChildren[ i ] );\n\t\t\t\tremove( actualDomChildren[ i ] );\n\t\t\t} else { // 'equal'\n\t\t\t\ti++;\n\t\t\t}\n\t\t}\n\n\t\tfunction sameNodes( actualDomChild, expectedDomChild ) {\n\t\t\t// Elements.\n\t\t\tif ( actualDomChild === expectedDomChild ) {\n\t\t\t\treturn true;\n\t\t\t}\n\t\t\t// Texts.\n\t\t\telse if ( domConverter.isText( actualDomChild ) && domConverter.isText( expectedDomChild ) ) {\n\t\t\t\treturn actualDomChild.data === expectedDomChild.data;\n\t\t\t}\n\t\t\t// Block fillers.\n\t\t\telse if ( isBlockFiller( actualDomChild, domConverter.blockFiller ) &&\n\t\t\t\tisBlockFiller( expectedDomChild, domConverter.blockFiller ) ) {\n\t\t\t\treturn true;\n\t\t\t}\n\n\t\t\t// Not matching types.\n\t\t\treturn false;\n\t\t}\n\t}\n\n\t/**\n\t * Checks if selection needs to be updated and possibly updates it.\n\t *\n\t * @private\n\t */\n\t_updateSelection() {\n\t\t// If there is no selection - remove DOM and fake selections.\n\t\tif ( this.selection.rangeCount === 0 ) {\n\t\t\tthis._removeDomSelection();\n\t\t\tthis._removeFakeSelection();\n\n\t\t\treturn;\n\t\t}\n\n\t\tconst domRoot = this.domConverter.getCorrespondingDomElement( this.selection.editableElement );\n\n\t\t// Do nothing if there is no focus, or there is no DOM element corresponding to selection's editable element.\n\t\tif ( !this.isFocused || !domRoot ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Render selection.\n\t\tif ( this.selection.isFake ) {\n\t\t\tthis._updateFakeSelection( domRoot );\n\t\t} else {\n\t\t\tthis._removeFakeSelection();\n\t\t\tthis._updateDomSelection( domRoot );\n\t\t}\n\t}\n\n\t/**\n\t * Updates fake selection.\n\t *\n\t * @private\n\t * @param {HTMLElement} domRoot Valid DOM root where fake selection container should be added.\n\t */\n\t_updateFakeSelection( domRoot ) {\n\t\tconst domDocument = domRoot.ownerDocument;\n\n\t\t// Create fake selection container if one does not exist.\n\t\tif ( !this._fakeSelectionContainer ) {\n\t\t\tthis._fakeSelectionContainer = domDocument.createElement( 'div' );\n\t\t\tthis._fakeSelectionContainer.style.position = 'fixed';\n\t\t\tthis._fakeSelectionContainer.style.top = 0;\n\t\t\tthis._fakeSelectionContainer.style.left = '-9999px';\n\t\t\tthis._fakeSelectionContainer.appendChild( domDocument.createTextNode( '\\u00A0' ) );\n\t\t}\n\n\t\t// Add fake container if not already added.\n\t\tif ( !this._fakeSelectionContainer.parentElement ) {\n\t\t\tdomRoot.appendChild( this._fakeSelectionContainer );\n\t\t}\n\n\t\t// Update contents.\n\t\tconst content = this.selection.fakeSelectionLabel || '\\u00A0';\n\t\tthis._fakeSelectionContainer.firstChild.data = content;\n\n\t\t// Update selection.\n\t\tconst domSelection = domDocument.getSelection();\n\t\tdomSelection.removeAllRanges();\n\t\tconst domRange = new Range();\n\t\tdomRange.selectNodeContents( this._fakeSelectionContainer );\n\t\tdomSelection.addRange( domRange );\n\n\t\t// Bind fake selection container with current selection.\n\t\tthis.domConverter.bindFakeSelection( this._fakeSelectionContainer, this.selection );\n\t}\n\n\t/**\n\t * Updates DOM selection.\n\t *\n\t * @private\n\t * @param {HTMLElement} domRoot Valid DOM root where DOM selection should be rendered.\n\t */\n\t_updateDomSelection( domRoot ) {\n\t\tconst domSelection = domRoot.ownerDocument.defaultView.getSelection();\n\t\tconst oldViewSelection = domSelection && this.domConverter.domSelectionToView( domSelection );\n\n\t\tif ( oldViewSelection && this.selection.isEqual( oldViewSelection ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\tif ( oldViewSelection && areSimilarSelections( oldViewSelection, this.selection ) ) {\n\t\t\tconst data = {\n\t\t\t\toldSelection: oldViewSelection,\n\t\t\t\tcurrentSelection: this.selection\n\t\t\t};\n\n\t\t\tlog.warn( 'renderer-skipped-selection-rendering: The selection was not rendered due to its similarity to the current one.', data );\n\n\t\t\treturn;\n\t\t}\n\n\t\t// Multi-range selection is not available in most browsers, and, at least in Chrome, trying to\n\t\t// set such selection, that is not continuous, throws an error. Because of that, we will just use anchor\n\t\t// and focus of view selection.\n\t\t// Since we are not supporting multi-range selection, we also do not need to check if proper editable is\n\t\t// selected. If there is any editable selected, it is okay (editable is taken from selection anchor).\n\t\tconst anchor = this.domConverter.viewPositionToDom( this.selection.anchor );\n\t\tconst focus = this.domConverter.viewPositionToDom( this.selection.focus );\n\n\t\tdomSelection.collapse( anchor.parent, anchor.offset );\n\t\tdomSelection.extend( focus.parent, focus.offset );\n\t}\n\n\t/**\n\t * Removes DOM selection.\n\t *\n\t * @private\n\t */\n\t_removeDomSelection() {\n\t\tfor ( let doc of this.domDocuments ) {\n\t\t\tconst domSelection = doc.getSelection();\n\n\t\t\tif ( domSelection.rangeCount ) {\n\t\t\t\tconst activeDomElement = doc.activeElement;\n\t\t\t\tconst viewElement = this.domConverter.getCorrespondingViewElement( activeDomElement );\n\n\t\t\t\tif ( activeDomElement && viewElement ) {\n\t\t\t\t\tdoc.getSelection().removeAllRanges();\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Removes fake selection.\n\t *\n\t * @private\n\t */\n\t_removeFakeSelection() {\n\t\tconst container = this._fakeSelectionContainer;\n\n\t\tif ( container ) {\n\t\t\tcontainer.remove();\n\t\t}\n\t}\n\n\t/**\n\t * Checks if focus needs to be updated and possibly updates it.\n\t *\n\t * @private\n\t */\n\t_updateFocus() {\n\t\tif ( this.isFocused ) {\n\t\t\tconst editable = this.selection.editableElement;\n\n\t\t\tif ( editable ) {\n\t\t\t\tthis.domConverter.focus( editable );\n\t\t\t}\n\t\t}\n\t}\n}\n\nmix( Renderer, ObservableMixin );\n\n// Checks if two given selections are similar. Selections are considered similar if they are non-collapsed\n// and their trimmed (see {@link #_trimSelection}) representations are equal.\n//\n// @private\n// @param {module:engine/view/selection~Selection} selection1\n// @param {module:engine/view/selection~Selection} selection2\n// @returns {Boolean}\nfunction areSimilarSelections( selection1, selection2 ) {\n\treturn !selection1.isCollapsed && trimSelection( selection1 ).isEqual( trimSelection( selection2 ) );\n}\n\n// Creates a copy of a given selection with all of its ranges\n// trimmed (see {@link module:engine/view/range~Range#getTrimmed getTrimmed}).\n//\n// @private\n// @param {module:engine/view/selection~Selection} selection\n// @returns {module:engine/view/selection~Selection} Selection copy with all ranges trimmed.\nfunction trimSelection( selection ) {\n\tconst newSelection = Selection.createFromSelection( selection );\n\tconst ranges = newSelection.getRanges();\n\n\tlet trimmedRanges = [];\n\n\tfor ( let range of ranges ) {\n\t\ttrimmedRanges.push( range.getTrimmed() );\n\t}\n\n\tnewSelection.setRanges( trimmedRanges, newSelection.isBackward );\n\n\treturn newSelection;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/view/renderer.js\n// module id = 325\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/textproxy\n */\n\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/**\n * TextProxy is a wrapper for substring of {@link module:engine/view/text~Text}. Instance of this class is created by\n * {@link module:engine/view/treewalker~TreeWalker} when only a part of {@link module:engine/view/text~Text} needs to be returned.\n *\n * `TextProxy` has an API similar to {@link module:engine/view/text~Text Text} and allows to do most of the common tasks performed\n * on view nodes.\n *\n * **Note:** Some `TextProxy` instances may represent whole text node, not just a part of it.\n * See {@link module:engine/view/textproxy~TextProxy#isPartial}.\n *\n * **Note:** `TextProxy` is a readonly interface.\n *\n * **Note:** `TextProxy` instances are created on the fly basing on the current state of parent {@link module:engine/view/text~Text}.\n * Because of this it is highly unrecommended to store references to `TextProxy instances because they might get\n * invalidated due to operations on Document. Also TextProxy is not a {@link module:engine/view/node~Node} so it can not be\n * inserted as a child of {@link module:engine/view/element~Element}.\n *\n * `TextProxy` instances are created by {@link module:engine/view/treewalker~TreeWalker view tree walker}. You should not need to create\n * an instance of this class by your own.\n */\nexport default class TextProxy {\n\t/**\n\t * Creates a text proxy.\n\t *\n\t * @protected\n\t * @param {module:engine/view/text~Text} textNode Text node which part is represented by this text proxy.\n\t * @param {Number} offsetInText Offset in {@link module:engine/view/textproxy~TextProxy#textNode text node}\n\t * from which the text proxy starts.\n\t * @param {Number} length Text proxy length, that is how many text node's characters, starting from `offsetInText` it represents.\n\t * @constructor\n\t */\n\tconstructor( textNode, offsetInText, length ) {\n\t\t/**\n\t\t * Reference to the {@link module:engine/view/text~Text} element which TextProxy is a substring.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/view/text~Text} module:engine/view/textproxy~TextProxy#textNode\n\t\t */\n\t\tthis.textNode = textNode;\n\n\t\tif ( offsetInText < 0 || offsetInText > textNode.data.length ) {\n\t\t\t/**\n\t\t\t * Given offsetInText value is incorrect.\n\t\t\t *\n\t\t\t * @error view-textproxy-wrong-offsetintext\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'view-textproxy-wrong-offsetintext: Given offsetInText value is incorrect.' );\n\t\t}\n\n\t\tif ( length < 0 || offsetInText + length > textNode.data.length ) {\n\t\t\t/**\n\t\t\t * Given length value is incorrect.\n\t\t\t *\n\t\t\t * @error view-textproxy-wrong-length\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'view-textproxy-wrong-length: Given length value is incorrect.' );\n\t\t}\n\t\t/**\n\t\t * Text data represented by this text proxy.\n\t\t *\n\t\t * @readonly\n\t\t * @member {String} module:engine/view/textproxy~TextProxy#data\n\t\t */\n\t\tthis.data = textNode.data.substring( offsetInText, offsetInText + length );\n\n\t\t/**\n\t\t * Offset in the `textNode` where this `TextProxy` instance starts.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Number} module:engine/view/textproxy~TextProxy#offsetInText\n\t\t */\n\t\tthis.offsetInText = offsetInText;\n\t}\n\n\t/**\n\t * Flag indicating whether `TextProxy` instance covers only part of the original {@link module:engine/view/text~Text text node}\n\t * (`true`) or the whole text node (`false`).\n\t *\n\t * This is `false` when text proxy starts at the very beginning of {@link module:engine/view/textproxy~TextProxy#textNode textNode}\n\t * ({@link module:engine/view/textproxy~TextProxy#offsetInText offsetInText} equals `0`) and text proxy sizes is equal to\n\t * text node size.\n\t *\n\t * @readonly\n\t * @type {Boolean}\n\t */\n\tget isPartial() {\n\t\treturn this.data.length !== this.textNode.data.length;\n\t}\n\n\t/**\n\t * Parent of this text proxy, which is same as parent of text node represented by this text proxy.\n\t *\n\t * @readonly\n\t * @type {module:engine/view/element~Element|module:engine/view/documentfragment~DocumentFragment|null}\n\t */\n\tget parent() {\n\t\treturn this.textNode.parent;\n\t}\n\n\t/**\n\t * Root of this text proxy, which is same as root of text node represented by this text proxy.\n\t *\n\t * @readonly\n\t * @type {module:engine/view/node~Node|module:engine/view/documentfragment~DocumentFragment}\n\t */\n\tget root() {\n\t\treturn this.textNode.root;\n\t}\n\n\t/**\n\t * {@link module:engine/view/document~Document View document} that owns this text proxy, or `null` if the text proxy is inside\n\t * {@link module:engine/view/documentfragment~DocumentFragment document fragment}.\n\t *\n\t * @readonly\n\t * @type {module:engine/view/document~Document|null}\n\t */\n\tget document() {\n\t\treturn this.textNode.document;\n\t}\n\n\t/**\n\t * Checks whether given view tree object is of given type.\n\t *\n\t * Read more in {@link module:engine/view/node~Node#is}.\n\t *\n\t * @param {String} type\n\t * @returns {Boolean}\n\t */\n\tis( type ) {\n\t\treturn type == 'textProxy';\n\t}\n\n\t/**\n\t * Returns ancestors array of this text proxy.\n\t *\n\t * @param {Object} options Options object.\n\t * @param {Boolean} [options.includeNode=false] When set to `true` {#textNode} will be also included in parent's array.\n\t * @param {Boolean} [options.parentFirst=false] When set to `true`, array will be sorted from text proxy parent to\n\t * root element, otherwise root element will be the first item in the array.\n\t * @returns {Array} Array with ancestors.\n\t */\n\tgetAncestors( options = { includeNode: false, parentFirst: false } ) {\n\t\tconst ancestors = [];\n\t\tlet parent = options.includeNode ? this.textNode : this.parent;\n\n\t\twhile ( parent !== null ) {\n\t\t\tancestors[ options.parentFirst ? 'push' : 'unshift' ]( parent );\n\t\t\tparent = parent.parent;\n\t\t}\n\n\t\treturn ancestors;\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-engine/src/view/textproxy.js\n// module id = 326\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module enter/enter\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport EnterCommand from './entercommand';\nimport EnterObserver from './enterobserver';\n\n/**\n * The Enter feature. Handles the <kbd>Enter</kbd> and <kbd>Shift + Enter</kbd> keys in the editor.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class Enter extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get pluginName() {\n\t\treturn 'enter/enter';\n\t}\n\n\tinit() {\n\t\tconst editor = this.editor;\n\t\tconst editingView = editor.editing.view;\n\n\t\teditingView.addObserver( EnterObserver );\n\n\t\teditor.commands.set( 'enter', new EnterCommand( editor ) );\n\n\t\t// TODO We may use the keystroke handler for that.\n\t\tthis.listenTo( editingView, 'enter', ( evt, data ) => {\n\t\t\teditor.execute( 'enter' );\n\t\t\tdata.preventDefault();\n\t\t}, { priority: 'low' } );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-enter/src/enter.js\n// module id = 327\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module enter/entercommand\n */\n\nimport Command from '@ckeditor/ckeditor5-core/src/command/command';\nimport Position from '@ckeditor/ckeditor5-engine/src/model/position';\n\n/**\n * Enter command. It is used by the {@link module:enter/enter~Enter Enter feature} to handle the <kbd>Enter</kbd> key.\n *\n * @extends modue:core/command/command~Command\n */\nexport default class EnterCommand extends Command {\n\t/**\n\t * @inheritDoc\n\t */\n\t_doExecute() {\n\t\tconst doc = this.editor.document;\n\t\tconst batch = doc.batch();\n\n\t\tdoc.enqueueChanges( () => {\n\t\t\tenterBlock( this.editor.data, batch, doc.selection, doc.schema );\n\n\t\t\tthis.fire( 'afterExecute', { batch } );\n\t\t} );\n\t}\n}\n\n// Creates a new block in the way that the <kbd>Enter</kbd> key is expected to work.\n//\n// @param {engine.controller.DataController} dataController\n// @param {module:engine/model/batch~Batch} batch A batch to which the deltas will be added.\n// @param {module:engine/model/selection~Selection} selection Selection on which the action should be performed.\n// @param {module:engine/model/schema~Schema} schema\nfunction enterBlock( dataController, batch, selection, schema ) {\n\tconst isSelectionEmpty = selection.isCollapsed;\n\tconst range = selection.getFirstRange();\n\tconst startElement = range.start.parent;\n\tconst endElement = range.end.parent;\n\n\t// Do nothing if selection starts or ends inside `limit` elements.\n\tif ( schema.limits.has( startElement.name ) || schema.limits.has( endElement.name ) ) {\n\t\treturn;\n\t}\n\n\t// Don't touch the root.\n\tif ( startElement.root == startElement ) {\n\t\tif ( !isSelectionEmpty ) {\n\t\t\tdataController.deleteContent( selection, batch );\n\t\t}\n\n\t\treturn;\n\t}\n\n\tif ( isSelectionEmpty ) {\n\t\tsplitBlock( batch, selection, range.start );\n\t} else {\n\t\tconst shouldMerge = range.start.isAtStart && range.end.isAtEnd;\n\t\tconst isContainedWithinOneElement = ( startElement == endElement );\n\n\t\tdataController.deleteContent( selection, batch, { merge: shouldMerge } );\n\n\t\tif ( !shouldMerge ) {\n\t\t\t// Partially selected elements.\n\t\t\t//\n\t\t\t// <h>x[xx]x</h>\t\t-> <h>x^x</h>\t\t\t-> <h>x</h><h>^x</h>\n\t\t\tif ( isContainedWithinOneElement ) {\n\t\t\t\tsplitBlock( batch, selection, selection.focus );\n\t\t\t}\n\t\t\t// Selection over multiple elements.\n\t\t\t//\n\t\t\t// <h>x[x</h><p>y]y<p>\t-> <h>x^</h><p>y</p>\t-> <h>x</h><p>^y</p>\n\t\t\telse {\n\t\t\t\tselection.collapse( endElement );\n\t\t\t}\n\t\t}\n\t}\n}\n\nfunction splitBlock( batch, selection, splitPos ) {\n\tif ( splitPos.isAtEnd ) {\n\t\t// If the split is at the end of element, instead of splitting, just create a clone of position's parent\n\t\t// element and insert it after cloned element. The result is the same but less operations are taken\n\t\t// and it's more semantically correct (when it comes to operational transformation).\n\t\tconst oldElement = splitPos.parent;\n\t\tconst newElement = new oldElement.constructor( oldElement.name, oldElement.getAttributes() );\n\n\t\tbatch.insert( Position.createAfter( splitPos.parent ), newElement );\n\t} else {\n\t\tbatch.split( splitPos );\n\t}\n\n\tselection.collapse( splitPos.parent.nextSibling );\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-enter/src/entercommand.js\n// module id = 328\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module enter/enterobserver\n */\n\nimport Observer from '@ckeditor/ckeditor5-engine/src/view/observer/observer';\nimport DomEventData from '@ckeditor/ckeditor5-engine/src/view/observer/domeventdata';\nimport { keyCodes } from '@ckeditor/ckeditor5-utils/src/keyboard';\n\n/**\n * Enter observer introduces the {@link module:engine/view/document~Document#event:enter} event.\n *\n * @extends module:engine/view/observer~Observer\n */\nexport default class EnterObserver extends Observer {\n\tconstructor( document ) {\n\t\tsuper( document );\n\n\t\tdocument.on( 'keydown', ( evt, data ) => {\n\t\t\tif ( this.isEnabled && data.keyCode == keyCodes.enter ) {\n\t\t\t\tdocument.fire( 'enter', new DomEventData( document, data.domEvent ) );\n\t\t\t}\n\t\t} );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tobserve() {}\n}\n\n/**\n * Event fired when the user presses the <kbd>Enter</kbd> key.\n *\n * Note: This event is fired by the {@link module:enter/enterobserver~EnterObserver observer}\n * (usually registered by the {@link module:enter/enter~Enter Enter feature}).\n *\n * @event module:engine/view/document~Document#event:enter\n * @param {module:engine/view/observer/domeventdata~DomEventData} data\n */\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-enter/src/enterobserver.js\n// module id = 329\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module heading/heading\n */\n\nimport Paragraph from '@ckeditor/ckeditor5-paragraph/src/paragraph';\nimport HeadingEngine from './headingengine';\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport Model from '@ckeditor/ckeditor5-ui/src/model';\nimport createListDropdown from '@ckeditor/ckeditor5-ui/src/dropdown/list/createlistdropdown';\nimport Collection from '@ckeditor/ckeditor5-utils/src/collection';\nimport Template from '@ckeditor/ckeditor5-ui/src/template';\n\nimport '../theme/theme.scss';\n\n/**\n * The headings feature. It introduces the `headings` drop-down list and the `heading` command which allow\n * to convert paragraphs into headings.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class Heading extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get requires() {\n\t\treturn [ Paragraph, HeadingEngine ];\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get pluginName() {\n\t\treturn 'heading/heading';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tconst editor = this.editor;\n\t\tconst dropdownItems = new Collection();\n\t\tconst options = this._getLocalizedOptions();\n\t\tconst commands = [];\n\t\tconst t = editor.t;\n\t\tconst defaultTitle = t( 'Choose heading' );\n\t\tconst dropdownTooltip = t( 'Heading' );\n\n\t\tfor ( let option of options ) {\n\t\t\tconst command = editor.commands.get( option.modelElement );\n\t\t\tconst itemModel = new Model( {\n\t\t\t\tcommandName: option.modelElement,\n\t\t\t\tlabel: option.title,\n\t\t\t\tclass: option.class\n\t\t\t} );\n\n\t\t\titemModel.bind( 'isActive' ).to( command, 'value' );\n\n\t\t\t// Add the option to the collection.\n\t\t\tdropdownItems.add( itemModel );\n\n\t\t\tcommands.push( command );\n\t\t}\n\n\t\t// Create dropdown model.\n\t\tconst dropdownModel = new Model( {\n\t\t\twithText: true,\n\t\t\titems: dropdownItems,\n\t\t\ttooltip: dropdownTooltip\n\t\t} );\n\n\t\tdropdownModel.bind( 'isEnabled' ).to(\n\t\t\t// Bind to #isEnabled of each command...\n\t\t\t...getCommandsBindingTargets( commands, 'isEnabled' ),\n\t\t\t// ...and set it true if any command #isEnabled is true.\n\t\t\t( ...areEnabled ) => areEnabled.some( isEnabled => isEnabled )\n\t\t);\n\n\t\tdropdownModel.bind( 'label' ).to(\n\t\t\t// Bind to #value of each command...\n\t\t\t...getCommandsBindingTargets( commands, 'value' ),\n\t\t\t// ...and chose the title of the first one which #value is true.\n\t\t\t( ...areActive ) => {\n\t\t\t\tconst index = areActive.findIndex( value => value );\n\n\t\t\t\t// If none of the commands is active, display default title.\n\t\t\t\treturn options[ index ] ? options[ index ].title : defaultTitle;\n\t\t\t}\n\t\t);\n\n\t\t// Register UI component.\n\t\teditor.ui.componentFactory.add( 'headings', ( locale ) => {\n\t\t\tconst dropdown = createListDropdown( dropdownModel, locale );\n\n\t\t\tTemplate.extend( dropdown.template, {\n\t\t\t\tattributes: {\n\t\t\t\t\tclass: [\n\t\t\t\t\t\t'ck-heading-dropdown'\n\t\t\t\t\t]\n\t\t\t\t}\n\t\t\t} );\n\n\t\t\t// Execute command when an item from the dropdown is selected.\n\t\t\tthis.listenTo( dropdown, 'execute', ( evt ) => {\n\t\t\t\teditor.execute( evt.source.commandName );\n\t\t\t\teditor.editing.view.focus();\n\t\t\t} );\n\n\t\t\treturn dropdown;\n\t\t} );\n\t}\n\n\t/**\n\t * Returns heading options as defined in `config.heading.options` but processed to consider\n\t * editor localization, i.e. to display {@link module:heading/headingcommand~HeadingOption}\n\t * in the correct language.\n\t *\n\t * Note: The reason behind this method is that there's no way to use {@link module:utils/locale~Locale#t}\n\t * when the user config is defined because the editor does not exist yet.\n\t *\n\t * @private\n\t * @returns {Array.<module:heading/headingcommand~HeadingOption>}.\n\t */\n\t_getLocalizedOptions() {\n\t\tconst editor = this.editor;\n\t\tconst t = editor.t;\n\t\tconst localizedTitles = {\n\t\t\tParagraph: t( 'Paragraph' ),\n\t\t\t'Heading 1': t( 'Heading 1' ),\n\t\t\t'Heading 2': t( 'Heading 2' ),\n\t\t\t'Heading 3': t( 'Heading 3' )\n\t\t};\n\n\t\treturn editor.config.get( 'heading.options' ).map( option => {\n\t\t\tconst title = localizedTitles[ option.title ];\n\n\t\t\tif ( title && title != option.title ) {\n\t\t\t\t// Clone the option to avoid altering the original `config.heading.options`.\n\t\t\t\toption = Object.assign( {}, option, { title } );\n\t\t\t}\n\n\t\t\treturn option;\n\t\t} );\n\t}\n}\n\n// Returns an array of binding components for\n// {@link module:utils/observablemixin~Observable#bind} from a set of iterable\n// commands.\n//\n// @private\n// @param {Iterable.<module:core/command/command~Command>} commands\n// @param {String} attribute\n// @returns {Array.<String>}\nfunction getCommandsBindingTargets( commands, attribute ) {\n\treturn Array.prototype.concat( ...commands.map( c => [ c, attribute ] ) );\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-heading/src/heading.js\n// module id = 330\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module heading/headingcommand\n */\n\nimport Range from '@ckeditor/ckeditor5-engine/src/model/range';\nimport Command from '@ckeditor/ckeditor5-core/src/command/command';\nimport Selection from '@ckeditor/ckeditor5-engine/src/model/selection';\nimport Position from '@ckeditor/ckeditor5-engine/src/model/position';\nimport first from '@ckeditor/ckeditor5-utils/src/first';\n\n/**\n * The heading command. It is used by the {@link module:heading/heading~Heading heading feature} to apply headings.\n *\n * @extends module:core/command/command~Command\n */\nexport default class HeadingCommand extends Command {\n\t/**\n\t * Creates an instance of the command.\n\t *\n\t * @param {module:core/editor/editor~Editor} editor Editor instance.\n\t * @param {module:heading/headingcommand~HeadingOption} option An option to be used by the command instance.\n\t */\n\tconstructor( editor, option ) {\n\t\tsuper( editor );\n\n\t\tObject.assign( this, option );\n\n\t\t/**\n\t\t * Value of the command, indicating whether it is applied in the context\n\t\t * of current {@link module:engine/model/document~Document#selection selection}.\n\t\t *\n\t\t * @readonly\n\t\t * @observable\n\t\t * @member {Boolean}\n\t\t */\n\t\tthis.set( 'value', false );\n\n\t\t// Update current value each time changes are done on document.\n\t\tthis.listenTo( editor.document, 'changesDone', () => {\n\t\t\tthis.refreshValue();\n\t\t\tthis.refreshState();\n\t\t} );\n\n\t\t/**\n\t\t * Unique identifier of the command, also element's name in the model.\n\t\t * See {@link module:heading/headingcommand~HeadingOption}.\n\t\t *\n\t\t * @readonly\n\t\t * @member {String} #modelElement\n\t\t */\n\n\t\t/**\n\t\t * Element this command creates in the view.\n\t\t * See {@link module:heading/headingcommand~HeadingOption}.\n\t\t *\n\t\t * @readonly\n\t\t * @member {String} #viewElement\n\t\t */\n\n\t\t/**\n\t\t * User-readable title of the command.\n\t\t * See {@link module:heading/headingcommand~HeadingOption}.\n\t\t *\n\t\t * @readonly\n\t\t * @member {String} #title\n\t\t */\n\t}\n\n\t/**\n\t * Executes command.\n\t *\n\t * @protected\n\t * @param {Object} [options] Options for executed command.\n\t * @param {module:engine/model/batch~Batch} [options.batch] Batch to collect all the change steps.\n\t * New batch will be created if this option is not set.\n\t */\n\t_doExecute( options = {} ) {\n\t\tconst editor = this.editor;\n\t\tconst document = editor.document;\n\n\t\t// If current option is same as new option - toggle already applied option back to default one.\n\t\tconst shouldRemove = this.value;\n\n\t\tdocument.enqueueChanges( () => {\n\t\t\tconst batch = options.batch || document.batch();\n\n\t\t\tfor ( let block of document.selection.getSelectedBlocks() ) {\n\t\t\t\t// When removing applied option.\n\t\t\t\tif ( shouldRemove ) {\n\t\t\t\t\tif ( block.is( this.modelElement ) ) {\n\t\t\t\t\t\t// Apply paragraph to the selection withing that particular block only instead\n\t\t\t\t\t\t// of working on the entire document selection.\n\t\t\t\t\t\tconst selection = new Selection();\n\t\t\t\t\t\tselection.addRange( Range.createIn( block ) );\n\n\t\t\t\t\t\t// Share the batch with the paragraph command.\n\t\t\t\t\t\teditor.execute( 'paragraph', { selection, batch } );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\t// When applying new option.\n\t\t\t\telse if ( !block.is( this.modelElement ) ) {\n\t\t\t\t\tbatch.rename( block, this.modelElement );\n\t\t\t\t}\n\t\t\t}\n\t\t} );\n\t}\n\n\t/**\n\t * Updates command's {@link #value value} based on current selection.\n\t */\n\trefreshValue() {\n\t\tconst block = first( this.editor.document.selection.getSelectedBlocks() );\n\n\t\tthis.value = !!block && block.is( this.modelElement );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\t_checkEnabled() {\n\t\tconst block = first( this.editor.document.selection.getSelectedBlocks() );\n\n\t\treturn !!block && this.editor.document.schema.check( {\n\t\t\tname: this.modelElement,\n\t\t\tinside: Position.createBefore( block )\n\t\t} );\n\t}\n}\n\n/**\n * Heading option descriptor.\n *\n * @typedef {Object} module:heading/headingcommand~HeadingOption\n * @property {String} modelElement Element's name in the model.\n * @property {String} viewElement The name of the view element that will be used to represent the model element in the view.\n * @property {String} title The user-readable title of the option.\n */\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-heading/src/headingcommand.js\n// module id = 331\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module image/image\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport ImageEngine from './image/imageengine';\nimport Widget from '@ckeditor/ckeditor5-widget/src/widget';\nimport ImageTextAlternative from './imagetextalternative';\n\nimport '../theme/theme.scss';\n\n/**\n * The image plugin.\n *\n * Uses {@link module:image/image/imageengine~ImageEngine}.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class Image extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get requires() {\n\t\treturn [ ImageEngine, Widget, ImageTextAlternative ];\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get pluginName() {\n\t\treturn 'image/image';\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-image/src/image.js\n// module id = 332\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module image/image/converters\n */\n\nimport ModelElement from '@ckeditor/ckeditor5-engine/src/model/element';\nimport ModelPosition from '@ckeditor/ckeditor5-engine/src/model/position';\nimport modelWriter from '@ckeditor/ckeditor5-engine/src/model/writer';\n\n/**\n * Returns function that converts image view representation:\n *\n *\t\t<figure class=\"image\"><img src=\"...\" alt=\"...\"></img></figure>\n *\n * to model representation:\n *\n *\t\t<image src=\"...\" alt=\"...\"></image>\n *\n * @returns {Function}\n */\nexport function viewToModelImage() {\n\treturn ( evt, data, consumable, conversionApi ) => {\n\t\tconst viewFigureElement = data.input;\n\n\t\t// *** Step 1: Validate conversion.\n\t\t// Check if figure element can be consumed.\n\t\tif ( !consumable.test( viewFigureElement, { name: true, class: 'image' } ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Check if image element can be converted in current context.\n\t\tif ( !conversionApi.schema.check( { name: 'image', inside: data.context, attributes: 'src' } ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Check if img element is placed inside figure element and can be consumed with `src` attribute.\n\t\tconst viewImg = viewFigureElement.getChild( 0 );\n\n\t\tif ( !viewImg || viewImg.name != 'img' || !consumable.test( viewImg, { name: true, attribute: 'src' } ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// *** Step2: Convert to model.\n\t\tconsumable.consume( viewFigureElement, { name: true, class: 'image' } );\n\t\tconsumable.consume( viewImg, { name: true, attribute: 'src' } );\n\n\t\t// Create model element.\n\t\tconst modelImage = new ModelElement( 'image', {\n\t\t\tsrc: viewImg.getAttribute( 'src' )\n\t\t} );\n\n\t\t// Convert `alt` attribute if present.\n\t\tif ( consumable.consume( viewImg, { attribute: [ 'alt' ] } ) ) {\n\t\t\tmodelImage.setAttribute( 'alt', viewImg.getAttribute( 'alt' ) );\n\t\t}\n\n\t\t// Convert children of converted view element and append them to `modelImage`.\n\t\t// TODO https://github.com/ckeditor/ckeditor5-engine/issues/736.\n\t\tdata.context.push( modelImage );\n\t\tconst modelChildren = conversionApi.convertChildren( viewFigureElement, consumable, data );\n\t\tconst insertPosition = ModelPosition.createAt( modelImage, 'end' );\n\t\tmodelWriter.insert( insertPosition, modelChildren );\n\t\tdata.context.pop();\n\n\t\tdata.output = modelImage;\n\t};\n}\n\n/**\n * Creates image attribute converter for provided model conversion dispatchers.\n *\n * @param {Array.<module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher>} dispatchers\n * @param {String} attributeName\n */\nexport function createImageAttributeConverter( dispatchers, attributeName ) {\n\tfor ( let dispatcher of dispatchers ) {\n\t\tdispatcher.on( `addAttribute:${ attributeName }:image`, modelToViewAttributeConverter );\n\t\tdispatcher.on( `changeAttribute:${ attributeName }:image`, modelToViewAttributeConverter );\n\t\tdispatcher.on( `removeAttribute:${ attributeName }:image`, modelToViewAttributeConverter );\n\t}\n}\n\n// Model to view image converter converting given attribute, and adding it to `img` element nested inside `figure` element.\n//\n// @private\nfunction modelToViewAttributeConverter( evt, data, consumable, conversionApi ) {\n\tconst parts = evt.name.split( ':' );\n\tconst consumableType = parts[ 0 ] + ':' + parts[ 1 ];\n\n\tif ( !consumable.consume( data.item, consumableType ) ) {\n\t\treturn;\n\t}\n\n\tconst figure = conversionApi.mapper.toViewElement( data.item );\n\tconst img = figure.getChild( 0 );\n\n\tif ( parts[ 0 ] == 'removeAttribute' ) {\n\t\timg.removeAttribute( data.attributeKey );\n\t} else {\n\t\timg.setAttribute( data.attributeKey, data.attributeNewValue );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-image/src/image/converters.js\n// module id = 333\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module image/imagecaption\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport ImageCaptionEngine from './imagecaption/imagecaptionengine';\nimport '../theme/imagecaption/theme.scss';\n\n/**\n * The image caption plugin.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class ImageCaption extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get requires() {\n\t\treturn [ ImageCaptionEngine ];\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get pluginName() {\n\t\treturn 'image/imagecaption';\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-image/src/imagecaption.js\n// module id = 334\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module image/imagecaption/imagecaptionengine\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport ModelTreeWalker from '@ckeditor/ckeditor5-engine/src/model/treewalker';\nimport ModelElement from '@ckeditor/ckeditor5-engine/src/model/element';\nimport ViewContainerElement from '@ckeditor/ckeditor5-engine/src/view/containerelement';\nimport ViewElement from '@ckeditor/ckeditor5-engine/src/view/element';\nimport viewWriter from '@ckeditor/ckeditor5-engine/src/view/writer';\nimport ModelPosition from '@ckeditor/ckeditor5-engine/src/model/position';\nimport ViewPosition from '@ckeditor/ckeditor5-engine/src/view/position';\nimport buildViewConverter from '@ckeditor/ckeditor5-engine/src/conversion/buildviewconverter';\nimport { isImage, isImageWidget } from '../image/utils';\nimport {\n\tcaptionElementCreator,\n\tisCaption,\n\tgetCaptionFromImage,\n\tmatchImageCaption\n} from './utils';\n\n/**\n * The image caption engine plugin.\n *\n * Registers proper converters. Takes care of adding caption element if image without it is inserted to model document.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class ImageCaptionEngine extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tconst editor = this.editor;\n\t\tconst document = editor.document;\n\t\tconst viewDocument = editor.editing.view;\n\t\tconst schema = document.schema;\n\t\tconst data = editor.data;\n\t\tconst editing = editor.editing;\n\t\tconst t = editor.t;\n\n\t\t/**\n\t\t * Last selected caption editable.\n\t\t * It is used for hiding editable when is empty and image widget is no longer selected.\n\t\t *\n\t\t * @private\n\t\t * @member {module:engine/view/editableelement~EditableElement} #_lastSelectedCaption\n\t\t */\n\n\t\t/**\n\t\t * Function used to create editable caption element in the editing view.\n\t\t *\n\t\t * @private\n\t\t * @member {Function}\n\t\t */\n\t\tthis._createCaption = captionElementCreator( viewDocument, t( 'Enter image caption' ) );\n\n\t\t// Schema configuration.\n\t\tschema.registerItem( 'caption' );\n\t\tschema.allow( { name: '$inline', inside: 'caption' } );\n\t\tschema.allow( { name: 'caption', inside: 'image' } );\n\t\tschema.limits.add( 'caption' );\n\n\t\t// Add caption element to each image inserted without it.\n\t\tdocument.on( 'change', insertMissingModelCaptionElement );\n\n\t\t// View to model converter for the data pipeline.\n\t\tbuildViewConverter()\n\t\t\t.for( data.viewToModel )\n\t\t\t.from( matchImageCaption )\n\t\t\t.toElement( 'caption' );\n\n\t\t// Model to view converter for the data pipeline.\n\t\tdata.modelToView.on( 'insert:caption', captionModelToView( new ViewContainerElement( 'figcaption' ), false ) );\n\n\t\t// Model to view converter for the editing pipeline.\n\t\tediting.modelToView.on( 'insert:caption', captionModelToView( this._createCaption ) );\n\n\t\t// Always show caption in view when something is inserted in model.\n\t\tediting.modelToView.on( 'insert', ( evt, data ) => this._fixCaptionVisibility( data.item ), { priority: 'high' } );\n\n\t\t// Hide caption when everything is removed from it.\n\t\tediting.modelToView.on( 'remove', ( evt, data ) => this._fixCaptionVisibility( data.sourcePosition.parent ), { priority: 'high' } );\n\n\t\t// Update view before each rendering.\n\t\tthis.listenTo( viewDocument, 'render', () => this._updateCaptionVisibility(), { priority: 'high' } );\n\t}\n\n\t/**\n\t * Updates view before each rendering, making sure that empty captions (so unnecessary ones) are hidden\n\t * and then visible when the image is selected.\n\t *\n\t * @private\n\t */\n\t_updateCaptionVisibility() {\n\t\tconst mapper = this.editor.editing.mapper;\n\t\tconst viewSelection = this.editor.editing.view.selection;\n\t\tconst selectedElement = viewSelection.getSelectedElement();\n\t\tlet viewCaption;\n\n\t\t// Hide last selected caption if have no child elements.\n\t\tif ( this._lastSelectedCaption && !this._lastSelectedCaption.childCount ) {\n\t\t\tthis._lastSelectedCaption.addClass( 'ck-hidden' );\n\t\t}\n\n\t\t// If whole image widget is selected.\n\t\tif ( selectedElement && isImageWidget( selectedElement ) ) {\n\t\t\tconst modelImage = mapper.toModelElement( selectedElement );\n\t\t\tconst modelCaption = getCaptionFromImage( modelImage );\n\t\t\tviewCaption =  mapper.toViewElement( modelCaption );\n\t\t}\n\n\t\t// If selection is placed inside caption.\n\t\tif ( isCaption( viewSelection.editableElement ) ) {\n\t\t\tviewCaption = viewSelection.editableElement;\n\t\t}\n\n\t\tif ( viewCaption ) {\n\t\t\tviewCaption.removeClass( 'ck-hidden' );\n\t\t\tthis._lastSelectedCaption = viewCaption;\n\t\t}\n\t}\n\n\t/**\n\t * Fixes caption visibility during model to view conversion.\n\t * Checks if changed node is placed inside caption element and fixes it's visibility in the view.\n\t *\n\t * @private\n\t * @param {module:engine/model/node~Node} node\n\t */\n\t_fixCaptionVisibility( node ) {\n\t\tconst modelCaption = getParentCaption( node );\n\t\tconst mapper = this.editor.editing.mapper;\n\n\t\tif ( modelCaption ) {\n\t\t\tconst viewCaption = mapper.toViewElement( modelCaption );\n\n\t\t\tif ( viewCaption ) {\n\t\t\t\tif ( modelCaption.childCount ) {\n\t\t\t\t\tviewCaption.removeClass( 'ck-hidden' );\n\t\t\t\t} else {\n\t\t\t\t\tviewCaption.addClass( 'ck-hidden' );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n}\n\n// Checks whether data inserted to the model document have image element that has no caption element inside it.\n// If there is none - adds it to the image element.\n//\n// @private\nfunction insertMissingModelCaptionElement( evt, changeType, data, batch ) {\n\tif ( changeType !== 'insert' ) {\n\t\treturn;\n\t}\n\n\tconst walker = new ModelTreeWalker( {\n\t\tboundaries: data.range,\n\t\tignoreElementEnd: true\n\t} );\n\n\tfor ( let value of walker ) {\n\t\tconst item = value.item;\n\n\t\tif ( value.type == 'elementStart' && isImage( item ) && !getCaptionFromImage( item ) ) {\n\t\t\tbatch.document.enqueueChanges( () => {\n\t\t\t\t// Make sure that the image does not have caption already.\n\t\t\t\t// https://github.com/ckeditor/ckeditor5-image/issues/78\n\t\t\t\tif ( !getCaptionFromImage( item ) ) {\n\t\t\t\t\tbatch.insert( ModelPosition.createAt( item, 'end' ), new ModelElement( 'caption' ) );\n\t\t\t\t}\n\t\t\t} );\n\t\t}\n\t}\n}\n// Creates a converter that converts image caption model element to view element.\n//\n// @private\n// @param {Function|module:engine/view/element~Element} elementCreator\n// @param {Boolean} [hide=true] When set to `false` view element will not be inserted when it's empty.\n// @return {Function}\nfunction captionModelToView( elementCreator, hide = true ) {\n\treturn ( evt, data, consumable, conversionApi ) => {\n\t\tconst captionElement = data.item;\n\n\t\t// Return if element shouldn't be present when empty.\n\t\tif ( !captionElement.childCount && !hide ) {\n\t\t\treturn;\n\t\t}\n\n\t\tif ( isImage( captionElement.parent ) ) {\n\t\t\tif ( !consumable.consume( data.item, 'insert' ) ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tconst viewImage = conversionApi.mapper.toViewElement( data.range.start.parent );\n\t\t\tconst viewCaption = ( elementCreator instanceof ViewElement ) ?\n\t\t\t\telementCreator.clone( true ) :\n\t\t\t\telementCreator();\n\n\t\t\t// Hide if empty.\n\t\t\tif ( !captionElement.childCount ) {\n\t\t\t\tviewCaption.addClass( 'ck-hidden' );\n\t\t\t}\n\n\t\t\tinsertViewCaptionAndBind( viewCaption, data.item, viewImage, conversionApi.mapper );\n\t\t}\n\t};\n}\n\n// Inserts `viewCaption` at the end of `viewImage` and binds it to `modelCaption`.\n//\n// @private\n// @param {module:engine/view/containerelement~ContainerElement} viewCaption\n// @param {module:engine/model/element~Element} modelCaption\n// @param {module:engine/view/containerelement~ContainerElement} viewImage\n// @param {module:engine/conversion/mapper~Mapper} mapper\nfunction insertViewCaptionAndBind( viewCaption, modelCaption, viewImage, mapper ) {\n\tconst viewPosition = ViewPosition.createAt( viewImage, 'end' );\n\n\tviewWriter.insert( viewPosition, viewCaption );\n\tmapper.bindElements( modelCaption, viewCaption );\n}\n\n/**\n * Checks if provided node or one of its ancestors is caption element and returns it.\n *\n * @param {module:engine/model/node~Node} node\n * @returns {module:engine/model/element~Element|null}\n */\nfunction getParentCaption( node ) {\n\tconst ancestors = node.getAncestors( { includeNode: true } );\n\tconst caption = ancestors.find( ancestor => ancestor.name == 'caption' );\n\n\tif ( caption && caption.parent && caption.parent.name == 'image' ) {\n\t\treturn caption;\n\t}\n\n\treturn null;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-image/src/imagecaption/imagecaptionengine.js\n// module id = 335\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module image/imagecaption/utils\n */\n\nimport ModelElement from '@ckeditor/ckeditor5-engine/src/model/element';\nimport ViewEditableElement from '@ckeditor/ckeditor5-engine/src/view/editableelement';\nimport { attachPlaceholder } from '@ckeditor/ckeditor5-engine/src/view/placeholder';\nimport { toWidgetEditable } from '@ckeditor/ckeditor5-widget/src/utils';\n\nconst captionSymbol = Symbol( 'imageCaption' );\n\n/**\n * Returns a function that creates caption editable element for the given {@link module:engine/view/document~Document}.\n *\n * @param {module:engine/view/document~Document} viewDocument\n * @param {String} placeholderText Text to be displayed when caption is empty.\n * @return {Function}\n */\nexport function captionElementCreator( viewDocument, placeholderText ) {\n\treturn () => {\n\t\tconst editable = new ViewEditableElement( 'figcaption' );\n\t\teditable.document = viewDocument;\n\t\teditable.setCustomProperty( captionSymbol, true );\n\t\tattachPlaceholder( editable, placeholderText );\n\n\t\treturn toWidgetEditable( editable );\n\t};\n}\n\n/**\n * Returns `true` if given view element is image's caption editable.\n *\n * @param {module:engine/view/element~Element} viewElement\n * @return {Boolean}\n */\nexport function isCaption( viewElement ) {\n\treturn !!viewElement.getCustomProperty( captionSymbol );\n}\n\n/**\n * Returns caption model element from given image element. Returns `null` if no caption is found.\n *\n * @param {module:engine/model/element~Element} imageModelElement\n * @return {module:engine/model/element~Element|null}\n */\nexport function getCaptionFromImage( imageModelElement ) {\n\tfor ( let node of imageModelElement.getChildren() ) {\n\t\tif ( node instanceof ModelElement && node.name == 'caption' ) {\n\t\t\treturn node;\n\t\t}\n\t}\n\n\treturn null;\n}\n\n/**\n * {@link module:engine/view/matcher~Matcher} pattern. Checks if given element is `figcaption` element and is placed\n * inside image `figure` element.\n *\n * @param {module:engine/view/element~Element} element\n * @returns {Object|null} Returns object accepted by {@link module:engine/view/matcher~Matcher} or `null` if element\n * cannot be matched.\n */\nexport function matchImageCaption( element ) {\n\tconst parent = element.parent;\n\n\t// Convert only captions for images.\n\tif ( element.name == 'figcaption' && parent && parent.name == 'figure' && parent.hasClass( 'image' ) ) {\n\t\treturn { name: true };\n\t}\n\n\treturn null;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-image/src/imagecaption/utils.js\n// module id = 336\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module image/imagestyle\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport ImageStyleEngine from './imagestyle/imagestyleengine';\nimport ButtonView from '@ckeditor/ckeditor5-ui/src/button/buttonview';\n\n/**\n * The image style plugin.\n *\n * Uses {@link module:image/imagestyle/imagestyleengine~ImageStyleEngine}.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class ImageStyle extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get requires() {\n\t\treturn [ ImageStyleEngine ];\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get pluginName() {\n\t\treturn 'image/imagestyle';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tconst styles = this.editor.config.get( 'image.styles' );\n\n\t\tfor ( let style of styles ) {\n\t\t\tthis._createButton( style );\n\t\t}\n\n\t\t// Push buttons to default image toolbar if one exists.\n\t\tconst defaultImageToolbarConfig = this.editor.config.get( 'image.defaultToolbar' );\n\n\t\tif ( defaultImageToolbarConfig ) {\n\t\t\tif ( defaultImageToolbarConfig.length ) {\n\t\t\t\tdefaultImageToolbarConfig.push( '|' );\n\t\t\t}\n\n\t\t\tstyles.forEach( style => defaultImageToolbarConfig.push( style.name ) );\n\t\t}\n\t}\n\n\t/**\n\t * Creates button for each style and stores it in editor's {@link module:ui/componentfactory~ComponentFactory ComponentFactory}.\n\t *\n\t * @private\n\t * @param {module:image/imagestyle/imagestyleengine~ImageStyleFormat} style\n\t */\n\t_createButton( style ) {\n\t\tconst editor = this.editor;\n\t\tconst command = editor.commands.get( style.name );\n\n\t\teditor.ui.componentFactory.add( style.name, ( locale ) => {\n\t\t\tconst view = new ButtonView( locale );\n\n\t\t\tview.set( {\n\t\t\t\tlabel: style.title,\n\t\t\t\ticon: style.icon,\n\t\t\t\ttooltip: true\n\t\t\t} );\n\n\t\t\tview.bind( 'isEnabled' ).to( command, 'isEnabled' );\n\t\t\tview.bind( 'isOn' ).to( command, 'value' );\n\n\t\t\tthis.listenTo( view, 'execute', () => editor.execute( style.name ) );\n\n\t\t\treturn view;\n\t\t} );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-image/src/imagestyle.js\n// module id = 337\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module image/imagestyle/converters\n */\n\nimport { isImage } from '../image/utils';\n\n/**\n * Returns converter for the `imageStyle` attribute. It can be used for adding, changing and removing the attribute.\n *\n * @param {Object} styles Object containing available styles. See {@link module:image/imagestyle/imagestyleengine~ImageStyleFormat}\n * for more details.\n * @returns {Function} Model to view attribute converter.\n */\nexport function modelToViewStyleAttribute( styles ) {\n\treturn ( evt, data, consumable, conversionApi ) => {\n\t\tconst eventType = evt.name.split( ':' )[ 0 ];\n\t\tconst consumableType = eventType + ':imageStyle';\n\n\t\tif ( !consumable.test( data.item, consumableType ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Check if there is class name associated with given value.\n\t\tconst newStyle = getStyleByValue( data.attributeNewValue, styles );\n\t\tconst oldStyle = getStyleByValue( data.attributeOldValue, styles );\n\t\tconst viewElement = conversionApi.mapper.toViewElement( data.item );\n\n\t\tif ( handleRemoval( eventType, oldStyle, viewElement ) || handleAddition( eventType, newStyle, viewElement ) ) {\n\t\t\tconsumable.consume( data.item, consumableType );\n\t\t}\n\t};\n}\n\n/**\n * Returns view to model converter converting image CSS classes to proper value in the model.\n *\n * @param {Array.<module:image/imagestyle/imagestyleengine~ImageStyleFormat>} styles Styles for which converter is created.\n * @returns {Function} View to model converter.\n */\nexport function viewToModelStyleAttribute( styles ) {\n\t// Convert only styles without `null` value.\n\tconst filteredStyles = styles.filter( style => style.value !== null );\n\n\treturn ( evt, data, consumable, conversionApi ) => {\n\t\tfor ( let style of filteredStyles ) {\n\t\t\tviewToModelImageStyle( style, data, consumable, conversionApi );\n\t\t}\n\t};\n}\n\n// Converter from view to model converting single style.\n// For more information see {@link module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher};\n//\n// @param {module:image/imagestyle/imagestyleengine~ImageStyleFormat} style\n// @param {Object} data\n// @param {module:engine/conversion/viewconsumable~ViewConsumable} consumable\n// @param {Object} conversionApi\nfunction viewToModelImageStyle( style, data, consumable, conversionApi ) {\n\tconst viewFigureElement = data.input;\n\tconst modelImageElement = data.output;\n\n\t// *** Step 1: Validate conversion.\n\t// Check if view element has proper class to consume.\n\tif ( !consumable.test( viewFigureElement, { class: style.className } ) ) {\n\t\treturn;\n\t}\n\n\t// Check if figure is converted to image.\n\tif ( !isImage( modelImageElement ) ) {\n\t\treturn;\n\t}\n\n\t// Check if image element can be placed in current context wit additional attribute.\n\tconst attributes = [ ...modelImageElement.getAttributeKeys(), 'imageStyle' ];\n\n\tif ( !conversionApi.schema.check( { name: 'image', inside: data.context, attributes } ) ) {\n\t\treturn;\n\t}\n\n\t// *** Step2: Convert to model.\n\tconsumable.consume( viewFigureElement, { class: style.className } );\n\tmodelImageElement.setAttribute( 'imageStyle', style.value );\n}\n\n// Returns style with given `value` from array of styles.\n//\n// @param {String} value\n// @param {Array.<module:image/imagestyle/imagestyleengine~ImageStyleFormat> } styles\n// @return {module:image/imagestyle/imagestyleengine~ImageStyleFormat|undefined}\nfunction getStyleByValue( value, styles ) {\n\tfor ( let style of styles ) {\n\t\tif ( style.value === value ) {\n\t\t\treturn style;\n\t\t}\n\t}\n}\n\n// Handles converting removal of the attribute.\n// Returns `true` when handling was processed correctly and further conversion can be performed.\n//\n// @param {String} eventType Type of the event.\n// @param {module:image/imagestyle/imagestyleengine~ImageStyleFormat} style\n// @param {module:engine/view/element~Element} viewElement\n// @returns {Boolean} Whether the change was handled.\nfunction handleRemoval( eventType, style, viewElement ) {\n\tif ( style && ( eventType == 'changeAttribute' || eventType == 'removeAttribute' ) ) {\n\t\tviewElement.removeClass( style.className );\n\n\t\treturn true;\n\t}\n\n\treturn false;\n}\n\n// Handles converting addition of the attribute.\n// Returns `true` when handling was processed correctly and further conversion can be performed.\n//\n// @param {String} eventType Type of the event.\n// @param {module:image/imagestyle/imagestyleengine~ImageStyleFormat} style\n// @param {module:engine/view/element~Element} viewElement\n// @returns {Boolean} Whether the change was handled.\nfunction handleAddition( evenType, style, viewElement ) {\n\tif ( style && ( evenType == 'addAttribute' || evenType == 'changeAttribute' ) ) {\n\t\tviewElement.addClass( style.className );\n\n\t\treturn true;\n\t}\n\n\treturn false;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-image/src/imagestyle/converters.js\n// module id = 338\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module image/imagestyle/imagestylecommand\n */\n\nimport Command from '@ckeditor/ckeditor5-core/src/command/command';\nimport { isImage } from '../image/utils';\n\n/**\n * The image style command. It is used to apply different image styles.\n *\n * @extends module:core/command/command~Command\n */\nexport default class ImageStyleCommand extends Command {\n\t/**\n\t * Creates instance of the image style command. Each command instance is handling one style.\n\t *\n\t * @param {module:core/editor/editor~Editor} editor Editor instance.\n\t * @param {module:image/imagestyle/imagestyleengine~ImageStyleFormat} styles Style to apply by this command.\n\t */\n\tconstructor( editor, style ) {\n\t\tsuper( editor );\n\n\t\t/**\n\t\t * The current command value - `true` if style handled by the command is applied on currently selected image,\n\t\t * `false` otherwise.\n\t\t *\n\t\t * @readonly\n\t\t * @observable\n\t\t * @member {Boolean} #value\n\t\t */\n\t\tthis.set( 'value', false );\n\n\t\t/**\n\t\t * Style handled by this command.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:image/imagestyle/imagestyleengine~ImageStyleFormat} #style\n\t\t */\n\t\tthis.style = style;\n\n\t\t// Update current value and refresh state each time something change in model document.\n\t\tthis.listenTo( editor.document, 'changesDone', () => {\n\t\t\tthis._updateValue();\n\t\t\tthis.refreshState();\n\t\t} );\n\t}\n\n\t/**\n\t * Updates command's value.\n\t *\n\t * @private\n\t */\n\t_updateValue() {\n\t\tconst doc = this.editor.document;\n\t\tconst element = doc.selection.getSelectedElement();\n\n\t\tif ( !element ) {\n\t\t\tthis.value = false;\n\n\t\t\treturn;\n\t\t}\n\n\t\tif ( this.style.value === null ) {\n\t\t\tthis.value = !element.hasAttribute( 'imageStyle' );\n\t\t} else {\n\t\t\tthis.value = ( element.getAttribute( 'imageStyle' ) == this.style.value );\n\t\t}\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\t_checkEnabled() {\n\t\tconst element = this.editor.document.selection.getSelectedElement();\n\n\t\treturn isImage( element );\n\t}\n\n\t/**\n\t * Executes command.\n\t *\n\t * @protected\n\t * @param {Object} options\n\t * @param {module:engine/model/batch~Batch} [options.batch] Batch to collect all the change steps. New batch will be\n\t * created if this option is not set.\n\t */\n\t_doExecute( options = {} ) {\n\t\t// Stop if style is already applied.\n\t\tif ( this.value ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst editor = this.editor;\n\t\tconst doc = editor.document;\n\t\tconst selection = doc.selection;\n\t\tconst imageElement = selection.getSelectedElement();\n\n\t\tdoc.enqueueChanges( () => {\n\t\t\tconst batch = options.batch || doc.batch();\n\n\t\t\tbatch.setAttribute( imageElement, 'imageStyle', this.style.value );\n\t\t} );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-image/src/imagestyle/imagestylecommand.js\n// module id = 339\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module image/imagestyle/imagestyleengine\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport ImageStyleCommand from './imagestylecommand';\nimport ImageEngine from '../image/imageengine';\nimport { viewToModelStyleAttribute, modelToViewStyleAttribute } from './converters';\nimport fullSizeIcon from '@ckeditor/ckeditor5-core/theme/icons/object-center.svg';\nimport sideIcon from '@ckeditor/ckeditor5-core/theme/icons/object-right.svg';\n\n/**\n * The image style engine plugin. Sets default configuration, creates converters and registers\n * {@link module:image/imagestyle/imagestylecommand~ImageStyleCommand ImageStyleCommand}.\n *\n * @extends {module:core/plugin~Plugin}\n */\nexport default class ImageStyleEngine extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get requires() {\n\t\treturn [ ImageEngine ];\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tconst editor = this.editor;\n\t\tconst t = editor.t;\n\t\tconst doc = editor.document;\n\t\tconst schema = doc.schema;\n\t\tconst data = editor.data;\n\t\tconst editing = editor.editing;\n\n\t\t// Define default configuration.\n\t\teditor.config.define( 'image.styles', [\n\t\t\t// This option is equal to situation when no style is applied.\n\t\t\t{ name: 'imageStyleFull', title: t( 'Full size image' ), icon: fullSizeIcon, value: null },\n\n\t\t\t// This represents side image.\n\t\t\t{ name: 'imageStyleSide', title: t( 'Side image' ), icon: sideIcon, value: 'side', className: 'image-style-side' }\n\t\t] );\n\n\t\t// Get configuration.\n\t\tconst styles = editor.config.get( 'image.styles' );\n\n\t\t// Allow imageStyle attribute in image.\n\t\t// We could call it 'style' but https://github.com/ckeditor/ckeditor5-engine/issues/559.\n\t\tschema.allow( { name: 'image', attributes: 'imageStyle', inside: '$root' } );\n\n\t\t// Converters for imageStyle attribute from model to view.\n\t\tconst modelToViewConverter = modelToViewStyleAttribute( styles );\n\t\tediting.modelToView.on( 'addAttribute:imageStyle:image', modelToViewConverter );\n\t\tdata.modelToView.on( 'addAttribute:imageStyle:image', modelToViewConverter );\n\t\tediting.modelToView.on( 'changeAttribute:imageStyle:image', modelToViewConverter );\n\t\tdata.modelToView.on( 'changeAttribute:imageStyle:image', modelToViewConverter );\n\t\tediting.modelToView.on( 'removeAttribute:imageStyle:image', modelToViewConverter );\n\t\tdata.modelToView.on( 'removeAttribute:imageStyle:image', modelToViewConverter );\n\n\t\t// Converter for figure element from view to model.\n\t\tdata.viewToModel.on( 'element:figure', viewToModelStyleAttribute( styles ), { priority: 'low' } );\n\n\t\t// Register separate command for each style.\n\t\tfor ( let style of styles ) {\n\t\t\teditor.commands.set( style.name, new ImageStyleCommand( editor, style ) );\n\t\t}\n\t}\n}\n\n/**\n * Image style format descriptor.\n *\n *\timport fullIcon from 'path/to/icon.svg`;\n *\n *\tconst imageStyleFormat = {\n *\t\tname: 'fullSizeImage',\n *\t\tvalue: 'full',\n *\t\ticon: fullIcon,\n *\t\ttitle: `Full size image`,\n *\t\tclass: `image-full-size`\n *\t}\n *\n * @typedef {Object} module:image/imagestyle/imagestyleengine~ImageStyleFormat\n * @property {String} name Name of the style. It will be used to:\n * * register {@link module:core/command/command~Command command} which will apply this style,\n * * store style's button in editor's {@link module:ui/componentfactory~ComponentFactory ComponentFactory}.\n * @property {String} value Value used to store this style in model attribute.\n * When value is `null` style will be used as default one. Default style does not apply any CSS class to the view element.\n * @property {String} icon SVG icon representation to use when creating style's button.\n * @property {String} title Style's title.\n * @property {String} className CSS class used to represent style in view.\n */\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-image/src/imagestyle/imagestyleengine.js\n// module id = 340\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module image/imagetextalternative\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport ButtonView from '@ckeditor/ckeditor5-ui/src/button/buttonview';\nimport ImageTextAlternativeEngine from './imagetextalternative/imagetextalternativeengine';\nimport escPressHandler from '@ckeditor/ckeditor5-ui/src/bindings/escpresshandler';\nimport clickOutsideHandler from '@ckeditor/ckeditor5-ui/src/bindings/clickoutsidehandler';\nimport ImageToolbar from './imagetoolbar';\nimport TextAlternativeFormView from './imagetextalternative/ui/textalternativeformview';\nimport ImageBalloonPanel from './image/ui/imageballoonpanelview';\n\nimport textAlternativeIcon from '@ckeditor/ckeditor5-core/theme/icons/low-vision.svg';\nimport '../theme/imagetextalternative/theme.scss';\n\n/**\n * The image text alternative plugin.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class ImageTextAlternative extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get requires() {\n\t\treturn [ ImageTextAlternativeEngine ];\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get pluginName() {\n\t\treturn 'image/imagetextalternative';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tthis._createButton();\n\n\t\t// Push button to default image toolbar if the image toolbar was loaded.\n\t\tconst defaultImageToolbarConfig = this.editor.config.get( 'image.defaultToolbar' );\n\n\t\tif ( defaultImageToolbarConfig ) {\n\t\t\tif ( defaultImageToolbarConfig.length ) {\n\t\t\t\tdefaultImageToolbarConfig.push( '|' );\n\t\t\t}\n\n\t\t\tdefaultImageToolbarConfig.push( 'imageTextAlternative' );\n\t\t}\n\n\t\treturn this._createBalloonPanel().then( panel => {\n\t\t\t/**\n\t\t\t * Balloon panel containing text alternative change form.\n\t\t\t *\n\t\t\t * @member {module:image/ui/imageballoonpanel~ImageBalloonPanelView} #baloonPanel\n\t\t\t */\n\t\t\tthis.balloonPanel = panel;\n\n\t\t\t/**\n\t\t\t * Form containing textarea and buttons, used to change `alt` text value.\n\t\t\t *\n\t\t\t * @member {module:image/imagetextalternative/ui/textalternativeformview~TextAlternativeFormView} #form\n\t\t\t */\n\t\t\tthis.form = panel.content.get( 0 );\n\t\t} );\n\t}\n\n\t/**\n\t * Creates button showing text alternative change balloon panel and registers it in\n\t * editor's {@link module:ui/componentfactory~ComponentFactory ComponentFactory}.\n\t *\n\t * @private\n\t */\n\t_createButton() {\n\t\tconst editor = this.editor;\n\t\tconst command = editor.commands.get( 'imageTextAlternative' );\n\t\tconst t = editor.t;\n\n\t\teditor.ui.componentFactory.add( 'imageTextAlternative', ( locale ) => {\n\t\t\tconst view = new ButtonView( locale );\n\n\t\t\tview.set( {\n\t\t\t\tlabel: t( 'Change image text alternative' ),\n\t\t\t\ticon: textAlternativeIcon,\n\t\t\t\ttooltip: true\n\t\t\t} );\n\n\t\t\tview.bind( 'isEnabled' ).to( command, 'isEnabled' );\n\n\t\t\tthis.listenTo( view, 'execute', () => this._showBalloonPanel() );\n\n\t\t\treturn view;\n\t\t} );\n\t}\n\n\t/**\n\t * Creates balloon panel.\n\t *\n\t * @private\n\t * @return {Promise.<module:image/image/ui/imageballoonpanel~ImageBalloonPanelView>}\n\t */\n\t_createBalloonPanel() {\n\t\tconst editor = this.editor;\n\n\t\tconst panel = new ImageBalloonPanel( editor );\n\t\tconst form = new TextAlternativeFormView( editor.locale );\n\n\t\tthis.listenTo( form, 'submit', () => {\n\t\t\teditor.execute( 'imageTextAlternative', { newValue: form.lebeledInput.inputView.element.value } );\n\t\t\tthis._hideBalloonPanel();\n\t\t} );\n\n\t\t// If image toolbar is present - hide it when text alternative balloon is visible.\n\t\tconst imageToolbar = editor.plugins.get( ImageToolbar );\n\n\t\tif ( imageToolbar ) {\n\t\t\tthis.listenTo( panel, 'change:isVisible', () => {\n\t\t\t\tif ( panel.isVisible ) {\n\t\t\t\t\timageToolbar.hide();\n\t\t\t\t\timageToolbar.isEnabled = false;\n\t\t\t\t} else {\n\t\t\t\t\timageToolbar.show();\n\t\t\t\t\timageToolbar.isEnabled = true;\n\t\t\t\t}\n\t\t\t} );\n\t\t}\n\n\t\tthis.listenTo( form, 'cancel', () => this._hideBalloonPanel() );\n\n\t\t// Close on `ESC` press.\n\t\tescPressHandler( {\n\t\t\temitter: panel,\n\t\t\tactivator: () => panel.isVisible,\n\t\t\tcallback: () => this._hideBalloonPanel()\n\t\t} );\n\n\t\t// Close on click outside of balloon panel element.\n\t\tclickOutsideHandler( {\n\t\t\temitter: panel,\n\t\t\tactivator: () => panel.isVisible,\n\t\t\tcontextElement: panel.element,\n\t\t\tcallback: () => this._hideBalloonPanel()\n\t\t} );\n\n\t\treturn Promise.all( [\n\t\t\tpanel.content.add( form ),\n\t\t\teditor.ui.view.body.add( panel )\n\t\t] ).then( () => panel ) ;\n\t}\n\n\t/**\n\t * Shows the balloon panel.\n\t *\n\t * @private\n\t */\n\t_showBalloonPanel() {\n\t\tconst editor = this.editor;\n\t\tconst command = editor.commands.get( 'imageTextAlternative' );\n\t\tthis.form.lebeledInput.value = command.value || '';\n\t\tthis.balloonPanel.attach();\n\t\tthis.form.lebeledInput.select();\n\t}\n\n\t/**\n\t * Hides the balloon panel.\n\t *\n\t * @private\n\t */\n\t_hideBalloonPanel() {\n\t\tconst editor = this.editor;\n\t\tthis.balloonPanel.detach();\n\t\teditor.editing.view.focus();\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-image/src/imagetextalternative.js\n// module id = 341\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module image/imagelaternatetext/imagetextalternativecommand\n */\n\nimport Command from '@ckeditor/ckeditor5-core/src/command/command';\nimport { isImage } from '../image/utils';\n\n/**\n * The image text alternative command. It is used to change `alt` attribute on `image` elements.\n *\n * @extends module:core/command/command~Command\n */\nexport default class ImageTextAlternativeCommand extends Command {\n\t/**\n\t * @inheritDoc\n\t */\n\tconstructor( editor ) {\n\t\tsuper( editor );\n\t\t/**\n\t\t * The current command value - `false` if there is no `alt` attribute, otherwise contains string with `alt`\n\t\t * attribute value.\n\t\t *\n\t\t * @readonly\n\t\t * @observable\n\t\t * @member {String|Boolean} #value\n\t\t */\n\t\tthis.set( 'value', false );\n\n\t\t// Update current value and refresh state each time something change in model document.\n\t\tthis.listenTo( editor.document, 'changesDone', () => {\n\t\t\tthis._updateValue();\n\t\t\tthis.refreshState();\n\t\t} );\n\t}\n\n\t/**\n\t * Updates command's value.\n\t *\n\t * @private\n\t */\n\t_updateValue() {\n\t\tconst doc = this.editor.document;\n\t\tconst element = doc.selection.getSelectedElement();\n\n\t\tif ( isImage( element ) && element.hasAttribute( 'alt' ) ) {\n\t\t\tthis.value = element.getAttribute( 'alt' );\n\t\t} else {\n\t\t\tthis.value = false;\n\t\t}\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\t_checkEnabled() {\n\t\tconst element = this.editor.document.selection.getSelectedElement();\n\n\t\treturn isImage( element );\n\t}\n\n\t/**\n\t * Executes command.\n\t *\n\t * @protected\n\t * @param {Object} options\n\t * @param {String} options.newValue New value of `alt` attribute to set.\n\t * @param {module:engine/model/batch~Batch} [options.batch] Batch to collect all the change steps. New batch will be\n\t * created if this option is not set.\n\t */\n\t_doExecute( options ) {\n\t\tconst editor = this.editor;\n\t\tconst doc = editor.document;\n\t\tconst imageElement = doc.selection.getSelectedElement();\n\n\t\tdoc.enqueueChanges( () => {\n\t\t\tconst batch = options.batch || doc.batch();\n\n\t\t\tbatch.setAttribute( imageElement, 'alt', options.newValue );\n\t\t} );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-image/src/imagetextalternative/imagetextalternativecommand.js\n// module id = 342\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module image/imagetextalternative/imagetextalternativeengine\n */\n\nimport ImageTextAlternativeCommand from './imagetextalternativecommand';\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\n\n/**\n * The ImageTextAlternativeEngine plugin.\n * Registers `imageTextAlternative` command.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class ImageTextAlternativeEngine extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tthis.editor.commands.set( 'imageTextAlternative', new ImageTextAlternativeCommand( this.editor ) );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-image/src/imagetextalternative/imagetextalternativeengine.js\n// module id = 343\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module image/imagetextalternative/ui/imagetextalternativeformview\n */\n\nimport View from '@ckeditor/ckeditor5-ui/src/view';\nimport ButtonView from '@ckeditor/ckeditor5-ui/src/button/buttonview';\nimport Template from '@ckeditor/ckeditor5-ui/src/template';\nimport LabeledInputView from '@ckeditor/ckeditor5-ui/src/labeledinput/labeledinputview';\nimport InputTextView from '@ckeditor/ckeditor5-ui/src/inputtext/inputtextview';\nimport submitHandler from '@ckeditor/ckeditor5-ui/src/bindings/submithandler';\n\n/**\n * TextAlternativeFormView class.\n *\n * @extends module:ui/view~View\n */\nexport default class TextAlternativeFormView extends View {\n\t/**\n\t * @inheritDoc\n\t */\n\tconstructor( locale ) {\n\t\tsuper( locale );\n\n\t\tconst t = this.locale.t;\n\n\t\t/**\n\t\t * Text area with label.\n\t\t *\n\t\t * @member {module:ui/labeledinput/labeledinputview~LabeledInputView} #labeledTextarea\n\t\t */\n\t\tthis.lebeledInput = this._createLabeledInputView();\n\n\t\t/**\n\t\t * Button used to submit the form.\n\t\t *\n\t\t * @member {module:ui/button/buttonview~ButtonView} #saveButtonView\n\t\t */\n\t\tthis.saveButtonView = this._createButton( t( 'Save' ) );\n\t\tthis.saveButtonView.type = 'submit';\n\n\t\t/**\n\t\t * Button used to cancel the form.\n\t\t *\n\t\t * @member {module:ui/button/buttonview~ButtonView} #cancelButtonView\n\t\t */\n\t\tthis.cancelButtonView = this._createButton( t( 'Cancel' ), 'cancel' );\n\n\t\tTemplate.extend( this.saveButtonView.template, {\n\t\t\tattributes: {\n\t\t\t\tclass: [\n\t\t\t\t\t'ck-button-action'\n\t\t\t\t]\n\t\t\t}\n\t\t} );\n\n\t\tthis.template = new Template( {\n\t\t\ttag: 'form',\n\n\t\t\tattributes: {\n\t\t\t\tclass: [\n\t\t\t\t\t'cke-text-alternative-form',\n\t\t\t\t]\n\t\t\t},\n\n\t\t\tchildren: [\n\t\t\t\tthis.lebeledInput,\n\t\t\t\t{\n\t\t\t\t\ttag: 'div',\n\n\t\t\t\t\tattributes: {\n\t\t\t\t\t\tclass: [\n\t\t\t\t\t\t\t'cke-text-alternative-form__actions'\n\t\t\t\t\t\t]\n\t\t\t\t\t},\n\n\t\t\t\t\tchildren: [\n\t\t\t\t\t\tthis.saveButtonView,\n\t\t\t\t\t\tthis.cancelButtonView\n\t\t\t\t\t]\n\t\t\t\t}\n\t\t\t]\n\t\t} );\n\n\t\tsubmitHandler( {\n\t\t\tview: this\n\t\t} );\n\t}\n\n\t/**\n\t * Creates button view.\n\t *\n\t * @private\n\t * @param {String} label Button label\n\t * @param {String} [eventName] Event name which ButtonView#execute event will be delegated to.\n\t * @returns {module:ui/button/buttonview~ButtonView} Button view instance.\n\t */\n\t_createButton( label, eventName ) {\n\t\tconst button = new ButtonView( this.locale );\n\n\t\tbutton.label = label;\n\t\tbutton.withText = true;\n\n\t\tif ( eventName ) {\n\t\t\tbutton.delegate( 'execute' ).to( this, eventName );\n\t\t}\n\n\t\treturn button;\n\t}\n\n\t/**\n\t * Creates input with label.\n\t *\n\t * @private\n\t * @return {module:ui/labeledinput/labeledinputview~LabeledInputView}\n\t */\n\t_createLabeledInputView() {\n\t\tconst t = this.locale.t;\n\t\tconst labeledInput = new LabeledInputView( this.locale, InputTextView );\n\t\tlabeledInput.label = t( 'Text alternative' );\n\n\t\treturn labeledInput;\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-image/src/imagetextalternative/ui/textalternativeformview.js\n// module id = 344\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module link/link\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport ClickObserver from '@ckeditor/ckeditor5-engine/src/view/observer/clickobserver';\nimport LinkEngine from './linkengine';\nimport LinkElement from './linkelement';\n\nimport clickOutsideHandler from '@ckeditor/ckeditor5-ui/src/bindings/clickoutsidehandler';\n\nimport ButtonView from '@ckeditor/ckeditor5-ui/src/button/buttonview';\nimport BalloonPanelView from '@ckeditor/ckeditor5-ui/src/panel/balloon/balloonpanelview';\n\nimport LinkFormView from './ui/linkformview';\n\nimport linkIcon from '../theme/icons/link.svg';\nimport unlinkIcon from '../theme/icons/unlink.svg';\n\nimport '../theme/theme.scss';\n\n/**\n * The link feature. It introduces the Link and Unlink buttons and the <kbd>Ctrl+K</kbd> keystroke.\n *\n * It uses the {@link module:link/linkengine~LinkEngine link engine feature}.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class Link extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get requires() {\n\t\treturn [ LinkEngine ];\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get pluginName() {\n\t\treturn 'link/link';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tthis.editor.editing.view.addObserver( ClickObserver );\n\n\t\t/**\n\t\t * Balloon panel view to display the main UI.\n\t\t *\n\t\t * @member {module:link/ui/balloonpanel~BalloonPanelView}\n\t\t */\n\t\tthis.balloonPanelView = this._createBalloonPanel();\n\n\t\t/**\n\t\t * The form view inside {@link #balloonPanelView}.\n\t\t *\n\t\t * @member {module:link/ui/linkformview~LinkFormView}\n\t\t */\n\t\tthis.formView = this._createForm();\n\n\t\t// Create toolbar buttons.\n\t\tthis._createToolbarLinkButton();\n\t\tthis._createToolbarUnlinkButton();\n\t}\n\n\t/**\n\t * Creates a toolbar link button. Clicking this button will show\n\t * {@link #balloonPanelView} attached to the selection.\n\t *\n\t * @private\n\t */\n\t_createToolbarLinkButton() {\n\t\tconst editor = this.editor;\n\t\tconst linkCommand = editor.commands.get( 'link' );\n\t\tconst t = editor.t;\n\n\t\t// Handle `Ctrl+K` keystroke and show panel.\n\t\teditor.keystrokes.set( 'CTRL+K', () => this._showPanel() );\n\n\t\teditor.ui.componentFactory.add( 'link', ( locale ) => {\n\t\t\tconst button = new ButtonView( locale );\n\n\t\t\tbutton.isEnabled = true;\n\t\t\tbutton.label = t( 'Link' );\n\t\t\tbutton.icon = linkIcon;\n\t\t\tbutton.keystroke = 'CTRL+K';\n\t\t\tbutton.tooltip = true;\n\n\t\t\t// Bind button to the command.\n\t\t\tbutton.bind( 'isEnabled' ).to( linkCommand, 'isEnabled' );\n\n\t\t\t// Show the panel on button click.\n\t\t\tthis.listenTo( button, 'execute', () => this._showPanel() );\n\n\t\t\treturn button;\n\t\t} );\n\t}\n\n\t/**\n\t * Creates a toolbar unlink button. Clicking this button will unlink\n\t * the selected link.\n\t *\n\t * @private\n\t */\n\t_createToolbarUnlinkButton() {\n\t\tconst editor = this.editor;\n\t\tconst t = editor.t;\n\t\tconst unlinkCommand = editor.commands.get( 'unlink' );\n\n\t\teditor.ui.componentFactory.add( 'unlink', ( locale ) => {\n\t\t\tconst button = new ButtonView( locale );\n\n\t\t\tbutton.isEnabled = false;\n\t\t\tbutton.label = t( 'Unlink' );\n\t\t\tbutton.icon = unlinkIcon;\n\t\t\tbutton.tooltip = true;\n\n\t\t\t// Bind button to the command.\n\t\t\tbutton.bind( 'isEnabled' ).to( unlinkCommand, 'isEnabled' );\n\n\t\t\t// Execute unlink command and hide panel, if open on button click.\n\t\t\tthis.listenTo( button, 'execute', () => editor.execute( 'unlink' ) );\n\n\t\t\treturn button;\n\t\t} );\n\t}\n\n\t/**\n\t * Creates the {@link module:ui/panel/balloon/balloonpanelview~BalloonPanelView} instance.\n\t *\n\t * @private\n\t * @returns {module:ui/panel/balloon/balloonpanelview~BalloonPanelView} Link balloon panel instance.\n\t */\n\t_createBalloonPanel() {\n\t\tconst editor = this.editor;\n\t\tconst viewDocument = editor.editing.view;\n\n\t\t// Create the balloon panel instance.\n\t\tconst balloonPanelView = new BalloonPanelView( editor.locale );\n\t\tballoonPanelView.maxWidth = 300;\n\n\t\t// Add balloonPanel.view#element to FocusTracker.\n\t\t// @TODO: Do it automatically ckeditor5-core#23\n\t\teditor.ui.focusTracker.add( balloonPanelView.element );\n\n\t\t// Handle click on view document and show panel when selection is placed inside the link element.\n\t\t// Keep panel open until selection will be inside the same link element.\n\t\tthis.listenTo( viewDocument, 'click', () => {\n\t\t\tconst viewSelection = viewDocument.selection;\n\t\t\tconst parentLink = getPositionParentLink( viewSelection.getFirstPosition() );\n\n\t\t\tif ( viewSelection.isCollapsed && parentLink ) {\n\t\t\t\tthis._attachPanelToElement();\n\n\t\t\t\tthis.listenTo( viewDocument, 'render', () => {\n\t\t\t\t\tconst currentParentLink = getPositionParentLink( viewSelection.getFirstPosition() );\n\n\t\t\t\t\tif ( !viewSelection.isCollapsed || parentLink !== currentParentLink ) {\n\t\t\t\t\t\tthis._hidePanel();\n\t\t\t\t\t} else {\n\t\t\t\t\t\tthis._attachPanelToElement( parentLink );\n\t\t\t\t\t}\n\t\t\t\t} );\n\n\t\t\t\tthis.listenTo( balloonPanelView, 'change:isVisible', () => this.stopListening( viewDocument, 'render' ) );\n\t\t\t}\n\t\t} );\n\n\t\t// Focus the form if balloon panel is open and tab key has been pressed.\n\t\teditor.keystrokes.set( 'Tab', ( data, cancel ) => {\n\t\t\tif ( balloonPanelView.isVisible && !this.formView.focusTracker.isFocused ) {\n\t\t\t\tthis.formView.focus();\n\t\t\t\tcancel();\n\t\t\t}\n\t\t} );\n\n\t\t// Close the panel on esc key press when editable has focus.\n\t\teditor.keystrokes.set( 'Esc', ( data, cancel ) => {\n\t\t\tif ( balloonPanelView.isVisible ) {\n\t\t\t\tthis._hidePanel( true );\n\t\t\t\tcancel();\n\t\t\t}\n\t\t} );\n\n\t\t// Close on click outside of balloon panel element.\n\t\tclickOutsideHandler( {\n\t\t\temitter: balloonPanelView,\n\t\t\tactivator: () => balloonPanelView.isVisible,\n\t\t\tcontextElement: balloonPanelView.element,\n\t\t\tcallback: () => this._hidePanel()\n\t\t} );\n\n\t\teditor.ui.view.body.add( balloonPanelView );\n\n\t\treturn balloonPanelView;\n\t}\n\n\t/**\n\t * Creates the {@link module:link/ui/linkformview~LinkFormView} instance.\n\t *\n\t * @private\n\t * @returns {module:link/ui/linkformview~LinkFormView} Link form instance.\n\t */\n\t_createForm() {\n\t\tconst editor = this.editor;\n\t\tconst formView = new LinkFormView( editor.locale );\n\n\t\tformView.urlInputView.bind( 'value' ).to( editor.commands.get( 'link' ), 'value' );\n\n\t\t// Execute link command after clicking on formView `Save` button.\n\t\tthis.listenTo( formView, 'submit', () => {\n\t\t\teditor.execute( 'link', formView.urlInputView.inputView.element.value );\n\t\t\tthis._hidePanel( true );\n\t\t} );\n\n\t\t// Execute unlink command after clicking on formView `Unlink` button.\n\t\tthis.listenTo( formView, 'unlink', () => {\n\t\t\teditor.execute( 'unlink' );\n\t\t\tthis._hidePanel( true );\n\t\t} );\n\n\t\t// Close the panel on esc key press when the form has focus.\n\t\tformView.keystrokes.set( 'Esc', ( data, cancel ) => {\n\t\t\tthis._hidePanel( true );\n\t\t\tcancel();\n\t\t} );\n\n\t\t// Hide balloon panel after clicking on formView `Cancel` button.\n\t\tthis.listenTo( formView, 'cancel', () => this._hidePanel( true ) );\n\n\t\tthis.balloonPanelView.content.add( formView );\n\n\t\treturn formView;\n\t}\n\n\t/**\n\t * Shows {@link #balloonPanelView link balloon panel} and attach to target element.\n\t * If selection is collapsed and is placed inside link element, then panel will be attached\n\t * to whole link element, otherwise will be attached to the selection.\n\t *\n\t * @private\n\t * @param {module:link/linkelement~LinkElement} [parentLink] Target element.\n\t */\n\t_attachPanelToElement( parentLink ) {\n\t\tconst viewDocument = this.editor.editing.view;\n\t\tconst targetLink = parentLink || getPositionParentLink( viewDocument.selection.getFirstPosition() );\n\n\t\tconst target = targetLink ?\n\t\t\t\t// When selection is inside link element, then attach panel to this element.\n\t\t\t\tviewDocument.domConverter.getCorrespondingDomElement( targetLink )\n\t\t\t:\n\t\t\t\t// Otherwise attach panel to the selection.\n\t\t\t\tviewDocument.domConverter.viewRangeToDom( viewDocument.selection.getFirstRange() );\n\n\t\tthis.balloonPanelView.attachTo( {\n\t\t\ttarget,\n\t\t\tlimiter: viewDocument.domConverter.getCorrespondingDomElement( viewDocument.selection.editableElement )\n\t\t} );\n\t}\n\n\t/**\n\t * Hides {@link #balloonPanelView balloon panel view}.\n\t *\n\t * @private\n\t * @param {Boolean} [focusEditable=false] When `true` then editable focus will be restored on panel hide.\n\t */\n\t_hidePanel( focusEditable ) {\n\t\tthis.balloonPanelView.hide();\n\n\t\tif ( focusEditable ) {\n\t\t\tthis.editor.editing.view.focus();\n\t\t}\n\t}\n\n\t/**\n\t * Shows {@link #balloonPanelView balloon panel view}.\n\t *\n\t * @private\n\t */\n\t_showPanel() {\n\t\tthis._attachPanelToElement();\n\t\tthis.formView.urlInputView.select();\n\t}\n}\n\n// Try to find if one of the position parent ancestors is a LinkElement,\n// if yes return this element.\n//\n// @private\n// @param {engine.view.Position} position\n// @returns {module:link/linkelement~LinkElement|null}\nfunction getPositionParentLink( position ) {\n\treturn position.parent.getAncestors().find( ( ancestor ) => ancestor instanceof LinkElement );\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-link/src/link.js\n// module id = 345\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module link/linkcommand\n */\n\nimport Command from '@ckeditor/ckeditor5-core/src/command/command';\nimport Text from '@ckeditor/ckeditor5-engine/src/model/text';\nimport Range from '@ckeditor/ckeditor5-engine/src/model/range';\nimport getSchemaValidRanges from '@ckeditor/ckeditor5-core/src/command/helpers/getschemavalidranges';\nimport isAttributeAllowedInSelection from '@ckeditor/ckeditor5-core/src/command/helpers/isattributeallowedinselection';\nimport findLinkRange from './findlinkrange';\n\n/**\n * The link command. It is used by the {@link module:link/link~Link link feature}.\n *\n * @extends module:core/command/command~Command\n */\nexport default class LinkCommand extends Command {\n\t/**\n\t * @see module:core/command/command~Command\n\t * @param {module:core/editor/editor~Editor} editor\n\t */\n\tconstructor( editor ) {\n\t\tsuper( editor );\n\n\t\t/**\n\t\t * Currently selected `linkHref` attribute value.\n\t\t *\n\t\t * @observable\n\t\t * @member {Boolean} module:core/command/toggleattributecommand~ToggleAttributeCommand#value\n\t\t */\n\t\tthis.set( 'value', undefined );\n\n\t\tthis.listenTo( this.editor.document.selection, 'change:attribute', () => {\n\t\t\tthis.value = this.editor.document.selection.getAttribute( 'linkHref' );\n\t\t} );\n\t}\n\n\t/**\n\t * Checks if {@link module:engine/model/document~Document#schema} allows to create attribute in {@link\n\t * module:engine/model/document~Document#selection}\n\t *\n\t * @protected\n\t * @returns {Boolean}\n\t */\n\t_checkEnabled() {\n\t\tconst document = this.editor.document;\n\n\t\treturn isAttributeAllowedInSelection( 'linkHref', document.selection, document.schema );\n\t}\n\n\t/**\n\t * Executes the command.\n\t *\n\t * When selection is non-collapsed, then `linkHref` attribute will be applied to nodes inside selection, but only to\n\t * those nodes where `linkHref` attribute is allowed (disallowed nodes will be omitted).\n\t *\n\t * When selection is collapsed and is not inside text with `linkHref` attribute, then new {@link module:engine/model/text~Text Text node}\n\t * with\n\t * `linkHref` attribute will be inserted in place of caret, but only if such an element is allowed in this place. `_data` of\n\t * the inserted text will equal `href` parameter. Selection will be updated to wrap just inserted text node.\n\t *\n\t * When selection is collapsed and inside text with `linkHref` attribute, the attribute value will be updated.\n\t *\n\t * @protected\n\t * @param {String} href Link destination.\n\t */\n\t_doExecute( href ) {\n\t\tconst document = this.editor.document;\n\t\tconst selection = document.selection;\n\n\t\tdocument.enqueueChanges( () => {\n\t\t\t// Keep it as one undo step.\n\t\t\tconst batch = document.batch();\n\n\t\t\t// If selection is collapsed then update selected link or insert new one at the place of caret.\n\t\t\tif ( selection.isCollapsed ) {\n\t\t\t\tconst position = selection.getFirstPosition();\n\t\t\t\tconst parent = position.parent;\n\n\t\t\t\t// When selection is inside text with `linkHref` attribute.\n\t\t\t\tif ( selection.hasAttribute( 'linkHref' ) ) {\n\t\t\t\t\t// Then update `linkHref` value.\n\t\t\t\t\tconst linkRange = findLinkRange( selection.getFirstPosition(), selection.getAttribute( 'linkHref' ) );\n\n\t\t\t\t\tbatch.setAttribute( linkRange, 'linkHref', href );\n\n\t\t\t\t\t// Create new range wrapping changed link.\n\t\t\t\t\tselection.setRanges( [ linkRange ] );\n\t\t\t\t}\n\t\t\t\t// If not then insert text node with `linkHref` attribute in place of caret.\n\t\t\t\telse if ( document.schema.check( { name: '$text', attributes: 'linkHref', inside: parent.name } ) ) {\n\t\t\t\t\tconst node = new Text( href, { linkHref: href } );\n\n\t\t\t\t\tbatch.insert( position, node );\n\n\t\t\t\t\t// Create new range wrapping created node.\n\t\t\t\t\tselection.setRanges( [ Range.createOn( node ) ] );\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\t// If selection has non-collapsed ranges, we change attribute on nodes inside those ranges\n\t\t\t\t// omitting nodes where `linkHref` attribute is disallowed.\n\t\t\t\tconst ranges = getSchemaValidRanges( 'linkHref', selection.getRanges(), document.schema );\n\n\t\t\t\tfor ( let range of ranges ) {\n\t\t\t\t\tbatch.setAttribute( range, 'linkHref', href );\n\t\t\t\t}\n\t\t\t}\n\t\t} );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-link/src/linkcommand.js\n// module id = 346\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module link/linkengine\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport buildModelConverter from '@ckeditor/ckeditor5-engine/src/conversion/buildmodelconverter';\nimport buildViewConverter from '@ckeditor/ckeditor5-engine/src/conversion/buildviewconverter';\nimport LinkElement from './linkelement';\nimport LinkCommand from './linkcommand';\nimport UnlinkCommand from './unlinkcommand';\n\n/**\n * The link engine feature.\n *\n * It introduces the `linkHref=\"url\"` attribute in the model which renders to the view as a `<a href=\"url\">` element.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class LinkEngine extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tconst editor = this.editor;\n\t\tconst data = editor.data;\n\t\tconst editing = editor.editing;\n\n\t\t// Allow link attribute on all inline nodes.\n\t\teditor.document.schema.allow( { name: '$inline', attributes: 'linkHref' } );\n\n\t\t// Build converter from model to view for data and editing pipelines.\n\t\tbuildModelConverter().for( data.modelToView, editing.modelToView )\n\t\t\t.fromAttribute( 'linkHref' )\n\t\t\t.toElement( ( linkHref ) => new LinkElement( 'a', { href: linkHref } ) );\n\n\t\t// Build converter from view to model for data pipeline.\n\t\tbuildViewConverter().for( data.viewToModel )\n\t\t\t.fromElement( 'a' )\n\t\t\t.toAttribute( ( viewElement ) => ( {\n\t\t\t\tkey: 'linkHref',\n\t\t\t\tvalue: viewElement.getAttribute( 'href' )\n\t\t\t} ) );\n\n\t\t// Create linking commands.\n\t\teditor.commands.set( 'link', new LinkCommand( editor ) );\n\t\teditor.commands.set( 'unlink', new UnlinkCommand( editor ) );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-link/src/linkengine.js\n// module id = 347\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module link/ui/linkformview\n */\n\nimport View from '@ckeditor/ckeditor5-ui/src/view';\nimport Template from '@ckeditor/ckeditor5-ui/src/template';\nimport ViewCollection from '@ckeditor/ckeditor5-ui/src/viewcollection';\n\nimport ButtonView from '@ckeditor/ckeditor5-ui/src/button/buttonview';\nimport LabeledInputView from '@ckeditor/ckeditor5-ui/src/labeledinput/labeledinputview';\nimport InputTextView from '@ckeditor/ckeditor5-ui/src/inputtext/inputtextview';\n\nimport submitHandler from '@ckeditor/ckeditor5-ui/src/bindings/submithandler';\nimport FocusTracker from '@ckeditor/ckeditor5-utils/src/focustracker';\nimport FocusCycler from '@ckeditor/ckeditor5-ui/src/focuscycler';\nimport KeystrokeHandler from '@ckeditor/ckeditor5-utils/src/keystrokehandler';\n\n/**\n * The link form view controller class.\n *\n * See {@link module:link/ui/linkformview~LinkFormView}.\n *\n * @extends module:ui/view~View\n */\nexport default class LinkFormView extends View {\n\t/**\n\t * @inheritDoc\n\t */\n\tconstructor( locale ) {\n\t\tsuper( locale );\n\n\t\tconst t = locale.t;\n\n\t\t/**\n\t\t * Tracks information about DOM focus in the form.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:utils/focustracker~FocusTracker}\n\t\t */\n\t\tthis.focusTracker = new FocusTracker();\n\n\t\t/**\n\t\t * Instance of the {@link module:utils/keystrokehandler~KeystrokeHandler}.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:utils/keystrokehandler~KeystrokeHandler}\n\t\t */\n\t\tthis.keystrokes = new KeystrokeHandler();\n\n\t\t/**\n\t\t * The url input view.\n\t\t *\n\t\t * @member {module:ui/labeledinput/labeledinputview~LabeledInputView}\n\t\t */\n\t\tthis.urlInputView = this._createUrlInput();\n\n\t\t/**\n\t\t * The save button view.\n\t\t *\n\t\t * @member {module:ui/button/buttonview~ButtonView}\n\t\t */\n\t\tthis.saveButtonView = this._createButton( t( 'Save' ) );\n\t\tthis.saveButtonView.type = 'submit';\n\n\t\t/**\n\t\t * The cancel button view.\n\t\t *\n\t\t * @member {module:ui/button/buttonview~ButtonView}\n\t\t */\n\t\tthis.cancelButtonView = this._createButton( t( 'Cancel' ), 'cancel' );\n\n\t\t/**\n\t\t * The unlink button view.\n\t\t *\n\t\t * @member {module:ui/button/buttonview~ButtonView}\n\t\t */\n\t\tthis.unlinkButtonView = this._createButton( t( 'Unlink' ), 'unlink' );\n\n\t\t/**\n\t\t * A collection of views which can be focused in the form.\n\t\t *\n\t\t * @readonly\n\t\t * @protected\n\t\t * @member {module:ui/viewcollection~ViewCollection}\n\t\t */\n\t\tthis._focusables = new ViewCollection();\n\n\t\t/**\n\t\t * Helps cycling over {@link #_focusables} in the form.\n\t\t *\n\t\t * @readonly\n\t\t * @protected\n\t\t * @member {module:ui/focuscycler~FocusCycler}\n\t\t */\n\t\tthis._focusCycler = new FocusCycler( {\n\t\t\tfocusables: this._focusables,\n\t\t\tfocusTracker: this.focusTracker,\n\t\t\tkeystrokeHandler: this.keystrokes,\n\t\t\tactions: {\n\t\t\t\t// Navigate form fields backwards using the shift + tab keystroke.\n\t\t\t\tfocusPrevious: 'shift + tab',\n\n\t\t\t\t// Navigate form fields forwards using the tab key.\n\t\t\t\tfocusNext: 'tab'\n\t\t\t}\n\t\t} );\n\n\t\tTemplate.extend( this.saveButtonView.template, {\n\t\t\tattributes: {\n\t\t\t\tclass: [\n\t\t\t\t\t'ck-button-action'\n\t\t\t\t]\n\t\t\t}\n\t\t} );\n\n\t\tthis.template = new Template( {\n\t\t\ttag: 'form',\n\n\t\t\tattributes: {\n\t\t\t\tclass: [\n\t\t\t\t\t'ck-link-form',\n\t\t\t\t]\n\t\t\t},\n\n\t\t\tchildren: [\n\t\t\t\tthis.urlInputView,\n\t\t\t\t{\n\t\t\t\t\ttag: 'div',\n\n\t\t\t\t\tattributes: {\n\t\t\t\t\t\tclass: [\n\t\t\t\t\t\t\t'ck-link-form__actions'\n\t\t\t\t\t\t]\n\t\t\t\t\t},\n\n\t\t\t\t\tchildren: [\n\t\t\t\t\t\tthis.saveButtonView,\n\t\t\t\t\t\tthis.cancelButtonView,\n\t\t\t\t\t\tthis.unlinkButtonView\n\t\t\t\t\t]\n\t\t\t\t}\n\t\t\t]\n\t\t} );\n\n\t\tsubmitHandler( {\n\t\t\tview: this\n\t\t} );\n\n\t\tconst childViews = [\n\t\t\tthis.urlInputView,\n\t\t\tthis.saveButtonView,\n\t\t\tthis.cancelButtonView,\n\t\t\tthis.unlinkButtonView\n\t\t];\n\n\t\tchildViews.forEach( v => {\n\t\t\t// Register the view as focusable.\n\t\t\tthis._focusables.add( v );\n\n\t\t\t// Register the view in the focus tracker.\n\t\t\tthis.focusTracker.add( v.element );\n\t\t} );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\t// Start listening for the keystrokes coming from #element.\n\t\tthis.keystrokes.listenTo( this.element );\n\n\t\treturn super.init();\n\t}\n\n\t/**\n\t * Focuses the fist {@link #_focusables} in the form.\n\t */\n\tfocus() {\n\t\tthis._focusCycler.focusFirst();\n\t}\n\n\t/**\n\t * Create labeled input view.\n\t *\n\t * @private\n\t * @returns {module:ui/labeledinput/labeledinputview~LabeledInputView} Labeled input view instance.\n\t */\n\t_createUrlInput() {\n\t\tconst t = this.locale.t;\n\n\t\tconst labeledInput = new LabeledInputView( this.locale, InputTextView );\n\n\t\tlabeledInput.label = t( 'Link URL' );\n\n\t\treturn labeledInput;\n\t}\n\n\t/**\n\t * Creates button View.\n\t *\n\t * @private\n\t * @param {String} label Button label\n\t * @param {String} [eventName] Event name which ButtonView#execute event will be delegated to.\n\t * @returns {module:ui/button/buttonview~ButtonView} Button view instance.\n\t */\n\t_createButton( label, eventName ) {\n\t\tconst button = new ButtonView( this.locale );\n\n\t\tbutton.label = label;\n\t\tbutton.withText = true;\n\n\t\tif ( eventName ) {\n\t\t\tbutton.delegate( 'execute' ).to( this, eventName );\n\t\t}\n\n\t\treturn button;\n\t}\n}\n\n/**\n * Fired when the form view is submitted (when one of the child triggered submit event).\n * E.g. click on {@link #saveButtonView}.\n *\n * @event submit\n */\n\n/**\n * Fired when the form view is canceled, e.g. click on {@link #cancelButtonView}.\n *\n * @event cancel\n */\n\n/**\n * Fired when the {@link #unlinkButtonView} is clicked.\n *\n * @event unlink\n */\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-link/src/ui/linkformview.js\n// module id = 348\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module link/unlinkcommand\n */\n\nimport Command from '@ckeditor/ckeditor5-core/src/command/command';\nimport findLinkRange from './findlinkrange';\n\n/**\n * The unlink command. It is used by the {@link module:link/link~Link link plugin}.\n *\n * @extends module:core/command/command~Command\n */\nexport default class UnlinkCommand extends Command {\n\t/**\n\t * @see module:core/command/command~Command\n\t * @param {module:core/editor/editor~Editor} editor\n\t */\n\tconstructor( editor ) {\n\t\tsuper( editor );\n\n\t\t// Checks when command should be enabled or disabled.\n\t\tthis.listenTo( editor.document.selection, 'change:attribute', () => this.refreshState() );\n\t}\n\n\t/**\n\t * Executes the command.\n\t *\n\t * When the selection is collapsed, removes `linkHref` attribute from each node with the same `linkHref` attribute value.\n\t * When the selection is non-collapsed, removes `linkHref` from each node in selected ranges.\n\t *\n\t * @protected\n\t */\n\t_doExecute() {\n\t\tconst document = this.editor.document;\n\t\tconst selection = document.selection;\n\n\t\tdocument.enqueueChanges( () => {\n\t\t\t// Get ranges to unlink.\n\t\t\tconst rangesToUnlink = selection.isCollapsed ?\n\t\t\t\t[ findLinkRange( selection.getFirstPosition(), selection.getAttribute( 'linkHref' ) ) ] : selection.getRanges();\n\n\t\t\t// Keep it as one undo step.\n\t\t\tconst batch = document.batch();\n\n\t\t\t// Remove `linkHref` attribute from specified ranges.\n\t\t\tfor ( let range of rangesToUnlink ) {\n\t\t\t\tbatch.removeAttribute( range, 'linkHref' );\n\t\t\t}\n\t\t} );\n\t}\n\n\t/**\n\t * Checks if selection has `linkHref` attribute.\n\t *\n\t * @protected\n\t * @returns {Boolean}\n\t */\n\t_checkEnabled() {\n\t\treturn this.editor.document.selection.hasAttribute( 'linkHref' );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-link/src/unlinkcommand.js\n// module id = 349\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module list/converters\n */\n\nimport ViewListItemElement from './viewlistitemelement';\n\nimport ModelElement from '@ckeditor/ckeditor5-engine/src/model/element';\nimport ModelPosition from '@ckeditor/ckeditor5-engine/src/model/position';\nimport modelWriter from '@ckeditor/ckeditor5-engine/src/model/writer';\n\nimport ViewContainerElement from '@ckeditor/ckeditor5-engine/src/view/containerelement';\nimport ViewPosition from '@ckeditor/ckeditor5-engine/src/view/position';\nimport ViewRange from '@ckeditor/ckeditor5-engine/src/view/range';\nimport ViewTreeWalker from '@ckeditor/ckeditor5-engine/src/view/treewalker';\nimport viewWriter from '@ckeditor/ckeditor5-engine/src/view/writer';\n\n/**\n * Model to view converter for `listItem` model element insertion.\n *\n * It creates `<ul><li></li><ul>` (or `<ol>`) view structure out of `listItem` model element, inserts it at correct\n * position, and merges the list with surrounding lists (if able).\n *\n * @see module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:insert\n * @param {module:utils/eventinfo~EventInfo} evt Object containing information about the fired event.\n * @param {Object} data Additional information about the change.\n * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n * @param {Object} conversionApi Conversion interface.\n */\nexport function modelViewInsertion( evt, data, consumable, conversionApi ) {\n\tif ( !consumable.test( data.item, 'insert' ) ||\n\t\t!consumable.test( data.item, 'addAttribute:type' ) ||\n\t\t!consumable.test( data.item, 'addAttribute:indent' )\n\t) {\n\t\treturn;\n\t}\n\n\tconsumable.consume( data.item, 'insert' );\n\tconsumable.consume( data.item, 'addAttribute:type' );\n\tconsumable.consume( data.item, 'addAttribute:indent' );\n\n\tconst modelItem = data.item;\n\tconst viewItem = generateLiInUl( modelItem, conversionApi.mapper );\n\n\tinjectViewList( modelItem, viewItem, conversionApi.mapper );\n}\n\n/**\n * Model to view converter for `type` attribute change on `listItem` model element.\n *\n * This change means that `<li>`s parent changes from `<ul>` to `<ol>` (or vice versa). This is accomplished by breaking\n * view elements, changing their name and merging them.\n *\n * @see module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:changeAttribute\n * @param {module:utils/eventinfo~EventInfo} evt Object containing information about the fired event.\n * @param {Object} data Additional information about the change.\n * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n * @param {Object} conversionApi Conversion interface.\n */\nexport function modelViewChangeType( evt, data, consumable, conversionApi ) {\n\tif ( !consumable.consume( data.item, 'changeAttribute:type' ) ) {\n\t\treturn;\n\t}\n\n\tconst viewItem = conversionApi.mapper.toViewElement( data.item );\n\n\t// 1. Break the container after and before the list item.\n\t// This will create a view list with one view list item -- the one that changed type.\n\tviewWriter.breakContainer( ViewPosition.createBefore( viewItem ) );\n\tviewWriter.breakContainer( ViewPosition.createAfter( viewItem ) );\n\n\t// 2. Change name of the view list that holds the changed view item.\n\t// We cannot just change name property, because that would not render properly.\n\tlet viewList = viewItem.parent;\n\tconst listName = data.attributeNewValue == 'numbered' ? 'ol' : 'ul';\n\tviewList = viewWriter.rename( viewList, listName );\n\n\t// 3. Merge the changed view list with other lists, if possible.\n\tmergeViewLists( viewList, viewList.nextSibling );\n\tmergeViewLists( viewList.previousSibling, viewList );\n}\n\n/**\n * Model to view converter for `listItem` model element remove.\n *\n * @see module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:remove\n * @param {module:utils/eventinfo~EventInfo} evt Object containing information about the fired event.\n * @param {Object} data Additional information about the change.\n * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n * @param {Object} conversionApi Conversion interface.\n */\nexport function modelViewRemove( evt, data, consumable, conversionApi ) {\n\tif ( !consumable.consume( data.item, 'remove' ) ) {\n\t\treturn;\n\t}\n\n\tconst viewPosition = conversionApi.mapper.toViewPosition( data.sourcePosition );\n\tconst viewItem = viewPosition.nodeAfter.is( 'li' ) ? viewPosition.nodeAfter : viewPosition.nodeAfter.getChild( 0 );\n\n\t// 1. Break the container after and before the list item.\n\t// This will create a view list with one view list item -- the one that changed type.\n\tviewWriter.breakContainer( ViewPosition.createBefore( viewItem ) );\n\tviewWriter.breakContainer( ViewPosition.createAfter( viewItem ) );\n\n\t// 2. Remove the UL that contains just the removed <li>.\n\tconst viewList = viewItem.parent;\n\tconst viewListPrev = viewList.previousSibling;\n\tconst removeRange = ViewRange.createOn( viewList );\n\tviewWriter.remove( removeRange );\n\n\tif ( viewListPrev && viewListPrev.nextSibling ) {\n\t\tmergeViewLists( viewListPrev, viewListPrev.nextSibling );\n\t}\n\n\t// 3. Bring back nested list that was in the removed <li>.\n\thoistNestedLists( data.item.getAttribute( 'indent' ) + 1, data.sourcePosition, removeRange.start, viewItem, conversionApi.mapper );\n\n\t// Unbind this element only if it was moved to graveyard.\n\t// See #847.\n\tif ( data.item.root.rootName == '$graveyard' ) {\n\t\tconversionApi.mapper.unbindModelElement( data.item );\n\t}\n}\n\n/**\n * Model to view converter for `indent` attribute change on `listItem` model element.\n *\n * @see module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:changeAttribute\n * @param {module:utils/eventinfo~EventInfo} evt Object containing information about the fired event.\n * @param {Object} data Additional information about the change.\n * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n * @param {Object} conversionApi Conversion interface.\n */\nexport function modelViewChangeIndent( evt, data, consumable, conversionApi ) {\n\tif ( !consumable.consume( data.item, 'changeAttribute:indent' ) ) {\n\t\treturn;\n\t}\n\n\tconst viewItem = conversionApi.mapper.toViewElement( data.item );\n\n\t// 1. Break the container after and before the list item.\n\t// This will create a view list with one view list item -- the one that changed type.\n\tviewWriter.breakContainer( ViewPosition.createBefore( viewItem ) );\n\tviewWriter.breakContainer( ViewPosition.createAfter( viewItem ) );\n\n\t// 2. Extract view list with changed view list item and merge \"hole\" possibly created by breaking and removing elements.\n\tconst viewList = viewItem.parent;\n\tconst viewListPrev = viewList.previousSibling;\n\tconst removeRange = ViewRange.createOn( viewList );\n\tviewWriter.remove( removeRange );\n\n\t// TODO: get rid of `removePosition` when conversion is done on `changesDone`.\n\tlet removePosition;\n\n\tif ( viewListPrev && viewListPrev.nextSibling ) {\n\t\tremovePosition = mergeViewLists( viewListPrev, viewListPrev.nextSibling );\n\t}\n\n\tif ( !removePosition ) {\n\t\tremovePosition = removeRange.start;\n\t}\n\n\t// 3. Bring back nested list that was in the removed <li>.\n\thoistNestedLists( data.attributeOldValue + 1, data.range.start, removeRange.start, viewItem, conversionApi.mapper );\n\n\t// 4. Inject view list like it is newly inserted.\n\tinjectViewList( data.item, viewItem, conversionApi.mapper, removePosition );\n}\n\n/**\n * A special model to view converter introduced by {@link module:list/list~List List feature}. This converter is fired for\n * insert change of every model item, and should be fired before actual converter. The converter checks whether inserted\n * model item is a non-`listItem` element. If it is, and it is inserted inside a view list, the converter breaks the\n * list so the model element is inserted to the view parent element corresponding to its model parent element.\n *\n * The converter prevents such situations:\n *\n *\t\t// Model:                        // View:\n *\t\t<listItem>foo</listItem>         <ul>\n *\t\t<listItem>bar</listItem>             <li>foo</li>\n *\t\t                                     <li>bar</li>\n *\t\t                                 </ul>\n *\n *\t\t// After change:                 // Correct view guaranteed by this converter:\n *\t\t<listItem>foo</listItem>         <ul><li>foo</li></ul><p>xxx</p><ul><li>bar</li></ul>\n *\t\t<paragraph>xxx</paragraph>       // Instead of this wrong view state:\n *\t\t<listItem>bar</listItem>         <ul><li>foo</li><p>xxx</p><li>bar</li></ul>\n *\n * @see module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:insert\n * @param {module:utils/eventinfo~EventInfo} evt Object containing information about the fired event.\n * @param {Object} data Additional information about the change.\n * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n * @param {Object} conversionApi Conversion interface.\n */\nexport function modelViewSplitOnInsert( evt, data, consumable, conversionApi ) {\n\tif ( data.item.name != 'listItem' ) {\n\t\tlet viewPosition = conversionApi.mapper.toViewPosition( data.range.start );\n\n\t\tconst lists = [];\n\n\t\t// Break multiple ULs/OLs if there are.\n\t\t//\n\t\t// Imagine following list:\n\t\t//\n\t\t// 1 --------\n\t\t//   1.1 --------\n\t\t//     1.1.1 --------\n\t\t//     1.1.2 --------\n\t\t//     1.1.3 --------\n\t\t//       1.1.3.1 --------\n\t\t//   1.2 --------\n\t\t//     1.2.1 --------\n\t\t// 2 --------\n\t\t//\n\t\t// Insert paragraph after item 1.1.1:\n\t\t//\n\t\t// 1 --------\n\t\t//   1.1 --------\n\t\t//     1.1.1 --------\n\t\t//\n\t\t// Lorem ipsum.\n\t\t//\n\t\t//     1.1.2 --------\n\t\t//     1.1.3 --------\n\t\t//       1.1.3.1 --------\n\t\t//   1.2 --------\n\t\t//     1.2.1 --------\n\t\t// 2 --------\n\t\t//\n\t\t// In this case 1.1.2 has to become beginning of a new list.\n\t\t// We need to break list before 1.1.2 (obvious), then we need to break list also before 1.2.\n\t\t// Then we need to move those broken pieces one after another and merge:\n\t\t//\n\t\t// 1 --------\n\t\t//   1.1 --------\n\t\t//     1.1.1 --------\n\t\t//\n\t\t// Lorem ipsum.\n\t\t//\n\t\t// 1.1.2 --------\n\t\t//   1.1.3 --------\n\t\t//     1.1.3.1 --------\n\t\t// 1.2 --------\n\t\t//   1.2.1 --------\n\t\t// 2 --------\n\t\t//\n\t\twhile ( viewPosition.parent.name == 'ul' || viewPosition.parent.name == 'ol' ) {\n\t\t\tviewPosition = viewWriter.breakContainer( viewPosition );\n\n\t\t\tif ( viewPosition.parent.name != 'li' ) {\n\t\t\t\tbreak;\n\t\t\t}\n\n\t\t\t// Remove lists that are after inserted element.\n\t\t\t// They will be brought back later, below the inserted element.\n\t\t\tconst removeStart = viewPosition;\n\t\t\tconst removeEnd = ViewPosition.createAt( viewPosition.parent, 'end' );\n\n\t\t\t// Don't remove if there is nothing to remove.\n\t\t\tif ( !removeStart.isEqual( removeEnd ) ) {\n\t\t\t\tconst removed = viewWriter.remove( new ViewRange( removeStart, removeEnd ) );\n\t\t\t\tlists.push( removed );\n\t\t\t}\n\n\t\t\tviewPosition = ViewPosition.createAfter( viewPosition.parent );\n\t\t}\n\n\t\t// Bring back removed lists.\n\t\tif ( lists.length > 0 ) {\n\t\t\tfor ( let i = 0; i < lists.length; i++ ) {\n\t\t\t\tconst previousList = viewPosition.nodeBefore;\n\t\t\t\tconst insertedRange = viewWriter.insert( viewPosition, lists[ i ] );\n\t\t\t\tviewPosition = insertedRange.end;\n\n\t\t\t\t// Don't merge first list! We want a split in that place (this is why this converter is introduced).\n\t\t\t\tif ( i > 0 ) {\n\t\t\t\t\tlet mergePos = mergeViewLists( previousList, previousList.nextSibling );\n\n\t\t\t\t\t// If `mergePos` is in `previousList` it means that the lists got merged.\n\t\t\t\t\t// In this case, we need to fix insert position.\n\t\t\t\t\tif ( mergePos && mergePos.parent == previousList ) {\n\t\t\t\t\t\tviewPosition.offset--;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Merge last inserted list with element after it.\n\t\t\tmergeViewLists( viewPosition.nodeBefore, viewPosition.nodeAfter );\n\t\t}\n\t}\n}\n\n/**\n * A special model to view converter introduced by {@link module:list/list~List List feature}. This converter takes care of\n * merging view lists after something is removed or moved from near them.\n *\n * Example:\n *\n *\t\t// Model:                        // View:\n *\t\t<listItem>foo</listItem>         <ul><li>foo</li></ul>\n *\t\t<paragraph>xxx</paragraph>       <p>xxx</p>\n *\t\t<listItem>bar</listItem>         <ul><li>bar</li></ul>\n *\n *\t\t// After change:                 // Correct view guaranteed by this converter:\n *\t\t<listItem>foo</listItem>         <ul>\n *\t\t<listItem>bar</listItem>             <li>foo</li>\n *\t\t                                     <li>bar</li>\n *\t\t                                 </ul>\n *\n * @see module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:remove\n * @see module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:move\n * @param {module:utils/eventinfo~EventInfo} evt Object containing information about the fired event.\n * @param {Object} data Additional information about the change.\n * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n * @param {Object} conversionApi Conversion interface.\n */\nexport function modelViewMergeAfter( evt, data, consumable, conversionApi ) {\n\tif ( !data.item.is( 'listItem' ) ) {\n\t\tconst viewPosition = conversionApi.mapper.toViewPosition( data.sourcePosition );\n\t\tconst viewItemPrev = viewPosition.nodeBefore;\n\t\tconst viewItemNext = viewPosition.nodeAfter;\n\n\t\t// Merge lists if something (remove, move) was done from inside of list.\n\t\t// Merging will be done only if both items are view lists of the same type.\n\t\t// The check is done inside the helper function.\n\t\tmergeViewLists( viewItemPrev, viewItemNext );\n\t}\n}\n\n/**\n * View to model converter that converts view `<li>` elements into `listItem` model elements.\n *\n * To set correct values of `type` and `indent` attribute the converter:\n * * checks `<li>`'s parent,\n * * passes `data.indent` value when `<li>`'s sub-items are converted.\n *\n * @see module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher#event:element\n * @param {module:utils/eventinfo~EventInfo} evt Object containing information about the fired event.\n * @param {Object} data Object containing conversion input and a placeholder for conversion output and possibly other values.\n * @param {module:engine/conversion/viewconsumable~ViewConsumable} consumable Values to consume.\n * @param {Object} conversionApi Conversion interface to be used by callback.\n */\nexport function viewModelConverter( evt, data, consumable, conversionApi ) {\n\tif ( consumable.consume( data.input, { name: true } ) ) {\n\t\t// 1. Create `listItem` model element.\n\t\tconst listItem = new ModelElement( 'listItem' );\n\n\t\t// 2. Handle `listItem` model element attributes.\n\t\tdata.indent = data.indent ? data.indent : 0;\n\n\t\tconst type = data.input.parent.name == 'ul' ? 'bulleted' : 'numbered';\n\t\tlistItem.setAttribute( 'type', type );\n\t\tlistItem.setAttribute( 'indent', data.indent );\n\n\t\t// 3. Handle `<li>` children.\n\t\tdata.context.push( listItem );\n\n\t\t// `listItem`s created recursively should have bigger indent.\n\t\tdata.indent++;\n\n\t\t// `listItem`s will be kept in flat structure.\n\t\tlet items = [ listItem ];\n\n\t\t// Check all children of the converted `<li>`.\n\t\t// At this point we assume there are no \"whitespace\" view text nodes in view list, between view list items.\n\t\t// This should be handled by `<ul>` and `<ol>` converters.\n\t\tfor ( let child of data.input.getChildren() ) {\n\t\t\t// Let's convert the child.\n\t\t\tconst converted = conversionApi.convertItem( child, consumable, data );\n\n\t\t\t// If this is a view list element, we will convert it and concat the result (`listItem` model elements)\n\t\t\t// with already gathered results (in `items` array). `converted` should be a `ModelDocumentFragment`.\n\t\t\tif ( child.name == 'ul' || child.name == 'ol' ) {\n\t\t\t\titems = items.concat( Array.from( converted.getChildren() ) );\n\t\t\t}\n\t\t\t// If it was not a list it was a \"regular\" list item content. Just append it to `listItem`.\n\t\t\telse {\n\t\t\t\tmodelWriter.insert( ModelPosition.createAt( listItem, 'end' ), converted );\n\t\t\t}\n\t\t}\n\n\t\tdata.indent--;\n\t\tdata.context.pop();\n\n\t\tdata.output = items;\n\t}\n}\n\n/**\n * View to model converter for `<ul>` and `<ol>` view elements, that cleans the input view out of garbage.\n * This is mostly to clean white spaces from between `<li>` view elements inside the view list element, however also\n * incorrect data can be cleared if the view was incorrect.\n *\n * @see module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher#event:element\n * @param {module:utils/eventinfo~EventInfo} evt Object containing information about the fired event.\n * @param {Object} data Object containing conversion input and a placeholder for conversion output and possibly other values.\n * @param {module:engine/conversion/viewconsumable~ViewConsumable} consumable Values to consume.\n */\nexport function cleanList( evt, data, consumable ) {\n\tif ( consumable.test( data.input, { name: true } ) ) {\n\t\t// Caching children because when we start removing them iterating fails.\n\t\tconst children = Array.from( data.input.getChildren() );\n\n\t\tfor ( let child of children ) {\n\t\t\tif ( !child.is( 'li' ) ) {\n\t\t\t\tchild.remove();\n\t\t\t}\n\t\t}\n\t}\n}\n\n/**\n * View to model converter for `<li>, that cleans white space formatting from the input view.\n *\n * @see module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher#event:element\n * @param {module:utils/eventinfo~EventInfo} evt Object containing information about the fired event.\n * @param {Object} data Object containing conversion input and a placeholder for conversion output and possibly other values.\n * @param {module:engine/conversion/viewconsumable~ViewConsumable} consumable Values to consume.\n */\nexport function cleanListItem( evt, data, consumable ) {\n\tif ( consumable.test( data.input, { name: true } ) ) {\n\t\tif ( data.input.childCount === 0 ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst children = [ ...data.input.getChildren() ];\n\n\t\tlet foundList = false;\n\t\tlet firstNode = true;\n\n\t\tfor ( let child of children ) {\n\t\t\tif ( foundList && !child.is( 'ul' ) && !child.is( 'ol' ) ) {\n\t\t\t\tchild.remove();\n\t\t\t}\n\n\t\t\tif ( child.is( 'text' ) ) {\n\t\t\t\t// If this is the first node and it's a text node, left-trim it.\n\t\t\t\tif ( firstNode ) {\n\t\t\t\t\tchild.data = child.data.replace( /^\\s+/, '' );\n\t\t\t\t}\n\n\t\t\t\t// If this is the last text node before <ul> or <ol>, right-trim it.\n\t\t\t\tif ( !child.nextSibling || ( child.nextSibling.is( 'ul' ) || child.nextSibling.is( 'ol' ) ) ) {\n\t\t\t\t\tchild.data = child.data.replace( /\\s+$/, '' );\n\t\t\t\t}\n\t\t\t} else if ( child.is( 'ul' ) || child.is( 'ol' ) ) {\n\t\t\t\t// If this is a <ul> or <ol>, do not process it, just mark that we already visited list element.\n\t\t\t\tfoundList = true;\n\t\t\t}\n\n\t\t\tfirstNode = false;\n\t\t}\n\t}\n}\n\n/**\n * Callback for model position to view position mapping for {@link module:engine/conversion/mapper~Mapper}. The callback fixes positions\n * between `listItem` elements, that would be incorrectly mapped because of how list items are represented in model\n * and view.\n *\n * @see module:engine/conversion/mapper~Mapper#event:modelToViewPosition\n * @param {module:utils/eventinfo~EventInfo} evt Object containing information about the fired event.\n * @param {Object} data Object containing additional data and placeholder for mapping result.\n */\nexport function modelToViewPosition( evt, data ) {\n\tconst modelItem = data.modelPosition.nodeBefore;\n\n\tif ( modelItem && modelItem.is( 'listItem' ) ) {\n\t\tconst viewItem = data.mapper.toViewElement( modelItem );\n\t\tconst topmostViewList = viewItem.getAncestors().find( ( element ) => element.is( 'ul' ) || element.is( 'ol' ) );\n\t\tconst walker = new ViewTreeWalker( {\n\t\t\tstartPosition: ViewPosition.createAt( viewItem, 0 )\n\t\t} );\n\n\t\tfor ( let value of walker ) {\n\t\t\tif ( value.type == 'elementStart' && value.item.is( 'li' ) ) {\n\t\t\t\tdata.viewPosition = value.previousPosition;\n\n\t\t\t\tbreak;\n\t\t\t} else if ( value.type == 'elementEnd' && value.item == topmostViewList ) {\n\t\t\t\tdata.viewPosition = value.nextPosition;\n\n\t\t\t\tbreak;\n\t\t\t}\n\t\t}\n\t}\n}\n\n/**\n * Callback for view position to model position mapping for {@link module:engine/conversion/mapper~Mapper}. The callback fixes positions\n * between `<li>` elements, that would be incorrectly mapped because of how list items are represented in model\n * and view.\n *\n * @see module:engine/conversion/mapper~Mapper#event:viewToModelPosition\n * @param {module:utils/eventinfo~EventInfo} evt Object containing information about the fired event.\n * @param {Object} data Object containing additional data and placeholder for mapping result.\n */\nexport function viewToModelPosition( evt, data ) {\n\tconst viewPos = data.viewPosition;\n\tconst viewParent = viewPos.parent;\n\tconst mapper = data.mapper;\n\n\tif ( viewParent.name == 'ul' || viewParent.name == 'ol' ) {\n\t\t// Position is directly in <ul> or <ol>.\n\t\tif ( !viewPos.isAtEnd ) {\n\t\t\t// If position is not at the end, it must be before <li>.\n\t\t\t// Get that <li>, map it to `listItem` and set model position before that `listItem`.\n\t\t\tconst modelNode = mapper.toModelElement( viewPos.nodeAfter );\n\n\t\t\tdata.modelPosition = ModelPosition.createBefore( modelNode );\n\t\t} else {\n\t\t\t// Position is at the end of <ul> or <ol>, so there is no <li> after it to be mapped.\n\t\t\t// There is <li> before the position, but we cannot just map it to `listItem` and set model position after it,\n\t\t\t// because that <li> may contain nested items.\n\t\t\t// We will check \"model length\" of that <li>, in other words - how many `listItem`s are in that <li>.\n\t\t\tconst modelNode = mapper.toModelElement( viewPos.nodeBefore );\n\t\t\tconst modelLength = mapper.getModelLength( viewPos.nodeBefore );\n\n\t\t\t// Then we get model position before mapped `listItem` and shift it accordingly.\n\t\t\tdata.modelPosition = ModelPosition.createBefore( modelNode ).getShiftedBy( modelLength );\n\t\t}\n\n\t\tevt.stop();\n\t} else if ( viewParent.name == 'li' && viewPos.nodeBefore && ( viewPos.nodeBefore.name == 'ul' || viewPos.nodeBefore.name == 'ol' ) ) {\n\t\t// In most cases when view position is in <li> it is in text and this is a correct position.\n\t\t// However, if position is after <ul> or <ol> we have to fix it -- because in model <ul>/<ol> are not in the `listItem`.\n\t\tconst modelNode = mapper.toModelElement( viewParent );\n\n\t\t// Check all <ul>s and <ol>s that are in the <li> but before mapped position.\n\t\t// Get model length of those elements and then add it to the offset of `listItem` mapped to the original <li>.\n\t\tlet modelLength = 1; // Starts from 1 because the original <li> has to be counted in too.\n\t\tlet viewList = viewPos.nodeBefore;\n\n\t\twhile ( viewList && ( viewList.is( 'ul' ) || viewList.is( 'ol' ) ) ) {\n\t\t\tmodelLength += mapper.getModelLength( viewList );\n\n\t\t\tviewList = viewList.previousSibling;\n\t\t}\n\n\t\tdata.modelPosition = ModelPosition.createBefore( modelNode ).getShiftedBy( modelLength );\n\n\t\tevt.stop();\n\t}\n}\n\n/**\n * Post fixer that reacts to changes on document and fixed incorrect model states.\n *\n * Example:\n *\n *\t\t<listItem type=\"bulleted\" indent=0>Item 1</listItem>\n *\t\t<listItem type=\"bulleted\" indent=1>Item 2</listItem>   <--- this is removed.\n *\t\t<listItem type=\"bulleted\" indent=2>Item 3</listItem>\n *\n * Should become:\n *\n *\t\t<listItem type=\"bulleted\" indent=0>Item 1</listItem>\n *\t\t<listItem type=\"bulleted\" indent=1>Item 3</listItem>   <--- note that indent got postfixed.\n *\n * @param {module:engine/model/document~Document} document Document to observe.\n * @returns {Function} Callback to be attached to {@link module:engine/model/document~Document#event:change document change event}.\n */\nexport function modelChangePostFixer( document ) {\n\treturn ( evt, type, changes, batch ) => {\n\t\tif ( type == 'remove' ) {\n\t\t\t// Fix list items after the cut-out range.\n\t\t\t// This fix is needed if items in model after cut-out range have now wrong indents compared to their previous siblings.\n\t\t\t_fixItemsIndent( changes.sourcePosition, document, batch );\n\t\t\t// This fix is needed if two different nested lists got merged, change types of list items \"below\".\n\t\t\t_fixItemsType( changes.sourcePosition, false, document, batch );\n\t\t} else if ( type == 'move' ) {\n\t\t\t// Fix list items after the cut-out range.\n\t\t\t// This fix is needed if items in model after cut-out range have now wrong indents compared to their previous siblings.\n\t\t\t_fixItemsIndent( changes.sourcePosition, document, batch );\n\t\t\t// This fix is needed if two different nested lists got merged, change types of list items \"below\".\n\t\t\t_fixItemsType( changes.sourcePosition, false, document, batch );\n\n\t\t\t// Fix items in moved range.\n\t\t\t// This fix is needed if inserted items are too deeply intended.\n\t\t\t_fixItemsIndent( changes.range.start, document, batch );\n\t\t\t// This fix is needed if one or more first inserted items have different type.\n\t\t\t_fixItemsType( changes.range.start, false, document, batch );\n\n\t\t\t// Fix list items after inserted range.\n\t\t\t// This fix is needed if items in model after inserted range have wrong indents.\n\t\t\t_fixItemsIndent( changes.range.end, document, batch );\n\t\t\t// This fix is needed if one or more last inserted items have different type.\n\t\t\t_fixItemsType( changes.range.end, true, document, batch );\n\t\t} else if ( type == 'rename' && changes.oldName == 'listItem' && changes.newName != 'listItem' ) {\n\t\t\tconst element = changes.element;\n\n\t\t\t// Element name is changed from list to something else. Remove useless attributes.\n\t\t\tdocument.enqueueChanges( () => {\n\t\t\t\tbatch.removeAttribute( element, 'indent' ).removeAttribute( element, 'type' );\n\t\t\t} );\n\n\t\t\tconst changePos = ModelPosition.createAfter( changes.element );\n\n\t\t\t// Fix list items after the renamed element.\n\t\t\t// This fix is needed if there are items after renamed element, those items should start from indent = 0.\n\t\t\t_fixItemsIndent( changePos, document, batch );\n\t\t} else if ( type == 'insert' ) {\n\t\t\t// Fix list items in inserted range.\n\t\t\t// This fix is needed if inserted items are too deeply intended.\n\t\t\t_fixItemsIndent( changes.range.start, document, batch );\n\t\t\t// This fix is needed if one or more first inserted items have different type.\n\t\t\t_fixItemsType( changes.range.start, false, document, batch );\n\n\t\t\t// Fix list items after inserted range.\n\t\t\t// This fix is needed if items in model after inserted range have wrong indents.\n\t\t\t_fixItemsIndent( changes.range.end, document, batch );\n\t\t\t// This fix is needed if one or more last inserted items have different type.\n\t\t\t_fixItemsType( changes.range.end, true, document, batch );\n\t\t}\n\t};\n}\n\n// Helper function for post fixer callback. Performs fixing of model `listElement` items indent attribute. Checks the model at the\n// `changePosition`. Looks at the node before position where change occurred and uses that node as a reference for following list items.\nfunction _fixItemsIndent( changePosition, document, batch ) {\n\tconst prevItem = changePosition.nodeBefore;\n\tlet nextItem = changePosition.nodeAfter;\n\n\tif ( nextItem && nextItem.name == 'listItem' ) {\n\t\t// This is the maximum indent that following model list item may have.\n\t\tconst maxIndent = prevItem && prevItem.is( 'listItem' ) ? prevItem.getAttribute( 'indent' ) + 1 : 0;\n\n\t\t// Check how much the next item needs to be outdented.\n\t\tlet outdentBy = nextItem.getAttribute( 'indent' ) - maxIndent;\n\t\tconst items = [];\n\n\t\twhile ( nextItem && nextItem.name == 'listItem' && nextItem.getAttribute( 'indent' ) > maxIndent ) {\n\t\t\tif ( outdentBy > nextItem.getAttribute( 'indent' ) ) {\n\t\t\t\toutdentBy = nextItem.getAttribute( 'indent' );\n\t\t\t}\n\n\t\t\tconst newIndent = nextItem.getAttribute( 'indent' ) - outdentBy;\n\n\t\t\titems.push( { item: nextItem, indent: newIndent } );\n\n\t\t\tnextItem = nextItem.nextSibling;\n\t\t}\n\n\t\tif ( items.length > 0 ) {\n\t\t\tdocument.enqueueChanges( () => {\n\t\t\t\t// Since we are outdenting list items, it is safer to start from the last one (it will maintain correct model state).\n\t\t\t\tfor ( let item of items.reverse() ) {\n\t\t\t\t\tbatch.setAttribute( item.item, 'indent', item.indent );\n\t\t\t\t}\n\t\t\t} );\n\t\t}\n\t}\n}\n\n// Helper function for post fixer callback. Performs fixing of model nested `listElement` items type attribute.\n// Checks the model at the `changePosition`. Looks at nodes after/before that position and changes those items type\n// to the same as node before/after `changePosition`.\nfunction _fixItemsType( changePosition, fixPrevious, document, batch ) {\n\tlet item = changePosition[ fixPrevious ? 'nodeBefore' : 'nodeAfter' ];\n\n\tif ( !item || !item.is( 'listItem' ) || item.getAttribute( 'indent' ) === 0 ) {\n\t\t// !item - when last item got removed.\n\t\t// !item.is( 'listItem' ) - when first element to fix is not a list item already.\n\t\t// indent === 0 - do not fix if changes are done on top level lists.\n\t\treturn;\n\t}\n\n\tconst refItem = _getBoundaryItemOfSameList( item, !fixPrevious );\n\n\tif ( !refItem || refItem == item ) {\n\t\t// !refItem - happens if first list item is inserted.\n\t\t// refItem == item - happens if last item is inserted.\n\t\treturn;\n\t}\n\n\tconst refIndent = refItem.getAttribute( 'indent' );\n\tconst refType = refItem.getAttribute( 'type' );\n\n\tdocument.enqueueChanges( () => {\n\t\twhile ( item && item.is( 'listItem' ) && item.getAttribute( 'indent' ) >= refIndent ) {\n\t\t\tif ( item.getAttribute( 'type' ) != refType && item.getAttribute( 'indent' ) == refIndent ) {\n\t\t\t\tbatch.setAttribute( item, 'type', refType );\n\t\t\t}\n\n\t\t\titem = item[ fixPrevious ? 'previousSibling' : 'nextSibling' ];\n\t\t}\n\t} );\n}\n\n// Helper function that creates a `<ul><li></li></ul>` or (`<ol>`) structure out of given `modelItem` model `listItem` element.\n// Then, it binds created view list item (<li>) with model `listItem` element.\n// The function then returns created view list item (<li>).\nfunction generateLiInUl( modelItem, mapper ) {\n\tconst listType = modelItem.getAttribute( 'type' ) == 'numbered' ? 'ol' : 'ul';\n\tconst viewItem = new ViewListItemElement();\n\n\tconst viewList = new ViewContainerElement( listType, null );\n\tviewList.appendChildren( viewItem );\n\n\tmapper.bindElements( modelItem, viewItem );\n\n\treturn viewItem;\n}\n\n// Helper function that seeks for a list item sibling of given model item (or position) which meets given criteria.\n// `options` object may contain one or more of given values (by default they are `false`):\n// `options.getNext` - whether next or previous siblings should be checked (default = previous)\n// `options.checkAllSiblings` - whether all siblings or just the first one should be checked (default = only one),\n// `options.sameIndent` - whether sought sibling should have same indent (default = no),\n// `options.biggerIndent` - whether sought sibling should have bigger indent (default = no).\n// `options.smallerIndent` - whether sought sibling should have smaller indent (default = no).\n// `options.isMapped` - whether sought sibling must be mapped to view (default = no).\n// `options.mapper` - used to map model elements when `isMapped` option is set to true.\n// `options.indent` - used as reference item when first parameter is a position\n// Either `options.sameIndent` or `options.biggerIndent` should be set to `true`.\nfunction getSiblingListItem( modelItemOrPosition, options ) {\n\tconst direction = options.getNext ? 'nextSibling' : 'previousSibling';\n\tconst posDirection = options.getNext ? 'nodeAfter' : 'nodeBefore';\n\tconst checkAllSiblings = !!options.checkAllSiblings;\n\tconst sameIndent = !!options.sameIndent;\n\tconst biggerIndent = !!options.biggerIndent;\n\tconst smallerIndent = !!options.smallerIndent;\n\tconst isMapped = !!options.isMapped;\n\n\tconst indent = modelItemOrPosition instanceof ModelElement ? modelItemOrPosition.getAttribute( 'indent' ) : options.indent;\n\tlet item = modelItemOrPosition instanceof ModelElement ? modelItemOrPosition[ direction ] : modelItemOrPosition[ posDirection ];\n\n\twhile ( item && item.name == 'listItem' ) {\n\t\tlet itemIndent = item.getAttribute( 'indent' );\n\n\t\tif (\n\t\t\t( sameIndent && indent == itemIndent ) ||\n\t\t\t( biggerIndent && indent < itemIndent ) ||\n\t\t\t( smallerIndent && indent > itemIndent )\n\t\t) {\n\t\t\tif ( !isMapped || options.mapper.toViewElement( item ) ) {\n\t\t\t\treturn item;\n\t\t\t} else {\n\t\t\t\titem = item[ direction ];\n\n\t\t\t\tcontinue;\n\t\t\t}\n\t\t}\n\n\t\tif ( !checkAllSiblings ) {\n\t\t\treturn null;\n\t\t}\n\n\t\titem = item[ direction ];\n\t}\n\n\treturn null;\n}\n\n// Helper function that takes two parameters, that are expected to be view list elements, and merges them.\n// The merge happen only if both parameters are UL or OL elements.\nfunction mergeViewLists( firstList, secondList ) {\n\tif ( firstList && secondList && ( firstList.name == 'ul' || firstList.name == 'ol' ) && firstList.name == secondList.name ) {\n\t\treturn viewWriter.mergeContainers( ViewPosition.createAfter( firstList ) );\n\t}\n\n\treturn null;\n}\n\n// Helper function that takes model list item element `modelItem`, corresponding view list item element `injectedItem`\n// that is not added to the view and is inside a view list element (`ul` or `ol`) and is that's list only child.\n// The list is inserted at correct position (element breaking may be needed) and then merged with it's siblings.\n// See comments below to better understand the algorithm.\nfunction injectViewList( modelItem, injectedItem, mapper, removePosition ) {\n\tconst injectedList = injectedItem.parent;\n\n\t// Position where view list will be inserted.\n\tlet insertPosition;\n\n\t// 1. Find previous list item that has same or smaller indent. Basically we are looking for a first model item\n\t// that is \"parent\" or \"sibling\" if injected model item.\n\t// If there is no such list item, it means that injected list item is the first item in \"its list\".\n\tlet prevItem = getSiblingListItem( modelItem, { sameIndent: true, smallerIndent: true, checkAllSiblings: true } );\n\n\tif ( prevItem && prevItem.getAttribute( 'indent' ) == modelItem.getAttribute( 'indent' ) ) {\n\t\t// There is a list item with same indent - we found same-level sibling.\n\t\t// Break the list after it. Inserted view item will be inserted in the broken space.\n\t\tlet viewItem = mapper.toViewElement( prevItem );\n\t\tinsertPosition = viewWriter.breakContainer( ViewPosition.createAfter( viewItem ) );\n\t} else {\n\t\t// There is no list item with same indent. Check previous model item.\n\t\tprevItem = modelItem.previousSibling;\n\n\t\tif ( prevItem && prevItem.name == 'listItem' ) {\n\t\t\t// // If it is a list item, it has to have lower indent.\n\t\t\t// // It means that inserted item should be added to it as its nested item.\n\t\t\t// insertPosition = mapper.toViewPosition( ModelPosition.createAt( prevItem, 'end' ) );\n\t\t\t// ^ ACTUALLY NOT BECAUSE FIXING DOES NOT WORK PROPERLY.\n\t\t\t// TODO: fix this part of code when conversion from model to view is done on `changesDone` event or post/prefixing is better.\n\t\t\tif ( prevItem.getAttribute( 'indent' ) < modelItem.getAttribute( 'indent' ) ) {\n\t\t\t\t// Lower indent, correct model, previous item is a parent and this model item is its nested item.\n\t\t\t\tinsertPosition = mapper.toViewPosition( ModelPosition.createAt( prevItem, 'end' ) );\n\t\t\t} else {\n\t\t\t\t// Higher indent, incorrect model that is probably being fixed. Inject the view list where it was.\n\t\t\t\t// TODO: get rid of `removePosition` when conversion is done on `changesDone`.\n\t\t\t\tif ( removePosition.parent.is( 'ul' ) || removePosition.parent.is( 'ol' ) ) {\n\t\t\t\t\tinsertPosition = viewWriter.breakContainer( removePosition );\n\t\t\t\t} else {\n\t\t\t\t\tinsertPosition = removePosition;\n\t\t\t\t}\n\t\t\t}\n\t\t} else {\n\t\t\t// Previous item is not a list item (or does not exist at all).\n\t\t\t// Just map the position and insert the view item at mapped position.\n\t\t\tinsertPosition = mapper.toViewPosition( ModelPosition.createBefore( modelItem ) );\n\t\t}\n\t}\n\n\t// Insert the view item.\n\tviewWriter.insert( insertPosition, injectedList );\n\n\t// 2. Handle possible children of injected model item.\n\t// We have to check if next list item in model has bigger indent. If it has, it means that it and possibly\n\t// some following list items should be nested in the injected view item.\n\t// Look only after model elements that are already mapped to view. Some following model items might not be mapped\n\t// if multiple items in model were inserted/moved at once.\n\tconst nextItem = getSiblingListItem(\n\t\tmodelItem,\n\t\t{ biggerIndent: true, getNext: true, isMapped: true, mapper: mapper }\n\t);\n\n\tif ( nextItem ) {\n\t\tlet viewItem = mapper.toViewElement( nextItem );\n\n\t\t// Break the list between found view item and its preceding `<li>`s.\n\t\tviewWriter.breakContainer( ViewPosition.createBefore( viewItem ) );\n\n\t\t// The broken (\"lower\") part will be moved as nested children of the inserted view item.\n\t\tconst sourceStart = ViewPosition.createBefore( viewItem.parent );\n\n\t\tconst lastModelItem = _getBoundaryItemOfSameList( nextItem, false );\n\t\tconst lastViewItem = mapper.toViewElement( lastModelItem );\n\t\tconst sourceEnd = viewWriter.breakContainer( ViewPosition.createAfter( lastViewItem ) );\n\t\tconst sourceRange = new ViewRange( sourceStart, sourceEnd );\n\n\t\tconst targetPosition = ViewPosition.createAt( injectedItem, 'end' );\n\t\tviewWriter.move( sourceRange, targetPosition );\n\t}\n\n\t// Merge inserted view list with its possible neighbour lists.\n\tmergeViewLists( injectedList, injectedList.nextSibling );\n\tmergeViewLists( injectedList.previousSibling, injectedList );\n}\n\n// Helper function that takes all children of given `viewRemovedItem` and moves them in a correct place, according\n// to other given parameters.\nfunction hoistNestedLists( nextIndent, modelRemoveStartPosition, viewRemoveStartPosition, viewRemovedItem, mapper ) {\n\t// Find correct previous model list item element.\n\t// The element has to have either same or smaller indent than given reference indent.\n\t// This will be the model element which will get nested items (if it has smaller indent) or sibling items (if it has same indent).\n\t// Keep in mind that such element might not be found, if removed item was the first item.\n\tconst prevModelItem = getSiblingListItem( modelRemoveStartPosition, {\n\t\tsameIndent: true,\n\t\tsmallerIndent: true,\n\t\tcheckAllSiblings: true,\n\t\tindent: nextIndent\n\t} );\n\n\t// Indent of found element or `null` if the element has not been found.\n\tconst prevIndent = prevModelItem ? prevModelItem.getAttribute( 'indent' ) : null;\n\n\tlet insertPosition;\n\n\tif ( !prevModelItem ) {\n\t\t// If element has not been found, simply insert lists at the position where the removed item was:\n\t\t//\n\t\t// Lorem ipsum.\n\t\t// 1 --------           <--- this is removed, no previous list item, put nested items in place of removed item.\n\t\t//   1.1 --------       <--- this is reference indent.\n\t\t//     1.1.1 --------\n\t\t//     1.1.2 --------\n\t\t//   1.2 --------\n\t\t//\n\t\t// Becomes:\n\t\t//\n\t\t// Lorem ipsum.\n\t\t// 1.1 --------\n\t\t//   1.1.1 --------\n\t\t//   1.1.2 --------\n\t\t// 1.2 --------\n\t\tinsertPosition = viewRemoveStartPosition;\n\t} else if ( prevIndent == nextIndent ) {\n\t\t// If element has been found and has same indent as reference indent it means that nested items should\n\t\t// become siblings of found element:\n\t\t//\n\t\t// 1 --------\n\t\t//   1.1 --------\n\t\t//   1.2 --------       <--- this is `prevModelItem`.\n\t\t// 2 --------           <--- this is removed, previous list item has indent same as reference indent.\n\t\t//   2.1 --------       <--- this is reference indent, this and 2.2 should become siblings of 1.2.\n\t\t//   2.2 --------\n\t\t//\n\t\t// Becomes:\n\t\t//\n\t\t// 1 --------\n\t\t//   1.1 --------\n\t\t//   1.2 --------\n\t\t//   2.1 --------\n\t\t//   2.2 --------\n\t\tconst prevViewList = mapper.toViewElement( prevModelItem ).parent;\n\t\tinsertPosition = ViewPosition.createAfter( prevViewList );\n\t} else {\n\t\t// If element has been found and has smaller indent as reference indent it means that nested items\n\t\t// should become nested items of found item:\n\t\t//\n\t\t// 1 --------           <--- this is `prevModelItem`.\n\t\t//   1.1 --------       <--- this is removed, previous list item has indent smaller than reference indent.\n\t\t//     1.1.1 --------   <--- this is reference indent, this and 1.1.1 should become nested items of 1.\n\t\t//     1.1.2 --------\n\t\t//   1.2 --------\n\t\t//\n\t\t// Becomes:\n\t\t//\n\t\t// 1 --------\n\t\t//   1.1.1 --------\n\t\t//   1.1.2 --------\n\t\t//   1.2 --------\n\t\t//\n\t\t// Note: in this case 1.1.1 have indent 2 while 1 have indent 0. In model that should not be possible,\n\t\t// because following item may have indent bigger only by one. But this is fixed by postfixer.\n\t\tconst modelPosition = ModelPosition.createAt( prevModelItem, 'end' );\n\t\tinsertPosition = mapper.toViewPosition( modelPosition );\n\t}\n\n\t// Handle multiple lists. This happens if list item has nested numbered and bulleted lists. Following lists\n\t// are inserted after the first list (no need to recalculate insertion position for them).\n\tfor ( let child of [ ...viewRemovedItem.getChildren() ] ) {\n\t\tif ( child.is( 'ul' ) || child.is( 'ol' ) ) {\n\t\t\tinsertPosition = viewWriter.move( ViewRange.createOn( child ), insertPosition ).end;\n\n\t\t\tmergeViewLists( child, child.nextSibling );\n\t\t\tmergeViewLists( child.previousSibling, child );\n\t\t}\n\t}\n}\n\n// Helper function to obtain the first or the last model list item which is in on the same indent level as given `item`.\nfunction _getBoundaryItemOfSameList( item, getFirst ) {\n\tconst indent = item.getAttribute( 'indent' );\n\tconst direction = getFirst ? 'previousSibling' : 'nextSibling';\n\n\tlet result = item;\n\n\twhile ( item[ direction ] && item[ direction ].is( 'listItem' ) && item[ direction ].getAttribute( 'indent' ) >= indent ) {\n\t\titem = item[ direction ];\n\n\t\tif ( item.getAttribute( 'indent' ) == indent ) {\n\t\t\tresult = item;\n\t\t}\n\t}\n\n\treturn result;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-list/src/converters.js\n// module id = 350\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module list/indentcommand\n */\n\nimport Command from '@ckeditor/ckeditor5-core/src/command/command';\nimport first from '@ckeditor/ckeditor5-utils/src/first';\n\n/**\n * The list indent command. It is used by the {@link module:list/list~List list feature}.\n *\n * @extends core.command.Command\n */\nexport default class IndentCommand extends Command {\n\t/**\n\t * Creates an instance of the command.\n\t *\n\t * @param {module:core/editor/editor~Editor} editor Editor instance.\n\t * @param {'forward'|'backward'} indentDirection Direction of indent. If it is equal to `backward`, the command\n\t * will outdent a list item.\n\t */\n\tconstructor( editor, indentDirection ) {\n\t\tsuper( editor );\n\n\t\t/**\n\t\t * By how much the command will change list item's indent attribute.\n\t\t *\n\t\t * @readonly\n\t\t * @private\n\t\t * @member {Number}\n\t\t */\n\t\tthis._indentBy = indentDirection == 'forward' ? 1 : -1;\n\n\t\tthis.listenTo( editor.document, 'changesDone', () => {\n\t\t\tthis.refreshState();\n\t\t} );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\t_doExecute() {\n\t\tconst doc = this.editor.document;\n\t\tconst batch = doc.batch();\n\t\tlet itemsToChange = Array.from( doc.selection.getSelectedBlocks() );\n\n\t\tdoc.enqueueChanges( () => {\n\t\t\tconst lastItem = itemsToChange[ itemsToChange.length - 1 ];\n\n\t\t\t// Indenting a list item should also indent all the items that are already sub-items of indented item.\n\t\t\tlet next = lastItem.nextSibling;\n\n\t\t\t// Check all items after last indented item, as long as their indent is bigger than indent of that item.\n\t\t\twhile ( next && next.name == 'listItem' && next.getAttribute( 'indent' ) > lastItem.getAttribute( 'indent' ) ) {\n\t\t\t\titemsToChange.push( next );\n\n\t\t\t\tnext = next.nextSibling;\n\t\t\t}\n\n\t\t\t// We need to be sure to keep model in correct state after each small change, because converters\n\t\t\t// bases on that state and assumes that model is correct.\n\t\t\t// Because of that, if the command outdents items, we will outdent them starting from the last item, as\n\t\t\t// it is safer.\n\t\t\tif ( this._indentBy < 0 ) {\n\t\t\t\titemsToChange = itemsToChange.reverse();\n\t\t\t}\n\n\t\t\tfor ( let item of itemsToChange ) {\n\t\t\t\tconst indent = item.getAttribute( 'indent' ) + this._indentBy;\n\n\t\t\t\t// If indent is lower than 0, it means that the item got outdented when it was not indented.\n\t\t\t\t// This means that we need to convert that list item to paragraph.\n\t\t\t\tif ( indent < 0 ) {\n\t\t\t\t\t// To keep the model as correct as possible, first rename listItem, then remove attributes,\n\t\t\t\t\t// as listItem without attributes is very incorrect and will cause problems in converters.\n\t\t\t\t\t// No need to remove attributes, will be removed by post fixer.\n\t\t\t\t\tbatch.rename( item, 'paragraph' );\n\t\t\t\t}\n\t\t\t\t// If indent is >= 0, change the attribute value.\n\t\t\t\telse {\n\t\t\t\t\tbatch.setAttribute( item, 'indent', indent );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Check whether some of changed list items' type should not be fixed.\n\t\t\t// But first, reverse `itemsToChange` again -- we always want to perform those fixes starting from first item (source-wise).\n\t\t\tif ( this._indentBy < 0 ) {\n\t\t\t\titemsToChange = itemsToChange.reverse();\n\t\t\t}\n\n\t\t\tfor ( let item of itemsToChange ) {\n\t\t\t\t_fixType( item, batch );\n\t\t\t}\n\t\t} );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\t_checkEnabled() {\n\t\t// Check whether any of position's ancestor is a list item.\n\t\tconst listItem = first( this.editor.document.selection.getSelectedBlocks() );\n\n\t\t// If selection is not in a list item, the command is disabled.\n\t\tif ( !listItem || !listItem.is( 'listItem' ) ) {\n\t\t\treturn false;\n\t\t}\n\n\t\tif ( this._indentBy > 0 ) {\n\t\t\t// Cannot indent first item in it's list. Check if before `listItem` is a list item that is in same list.\n\t\t\t// To be in the same list, the item has to have same attributes and cannot be \"split\" by an item with lower indent.\n\t\t\tconst indent = listItem.getAttribute( 'indent' );\n\t\t\tconst type = listItem.getAttribute( 'type' );\n\n\t\t\tlet prev = listItem.previousSibling;\n\n\t\t\twhile ( prev && prev.is( 'listItem' ) && prev.getAttribute( 'indent' ) >= indent ) {\n\t\t\t\tif ( prev.getAttribute( 'indent' ) == indent ) {\n\t\t\t\t\t// The item is on the same level.\n\t\t\t\t\t// If it has same type, it means that we found a preceding sibling from the same list.\n\t\t\t\t\t// If it does not have same type, it means that `listItem` is on different list (this can happen only\n\t\t\t\t\t// on top level lists, though).\n\t\t\t\t\treturn prev.getAttribute( 'type' ) == type;\n\t\t\t\t}\n\n\t\t\t\tprev = prev.previousSibling;\n\t\t\t}\n\n\t\t\t// Could not find similar list item, this means that `listItem` is first in its list.\n\t\t\treturn false;\n\t\t}\n\n\t\t// If we are outdenting it is enough to be in list item. Every list item can always be outdented.\n\t\treturn true;\n\t}\n}\n\n// Fixes type of `item` element after it was indented/outdented. Looks for a sibling of `item` that has the same\n// indent and sets `item`'s type to the same as that sibling.\nfunction _fixType( item, batch ) {\n\t// Find a preceding sibling of `item` that is a list item of the same list as `item`.\n\tconst prev = _seekListItem( item, false );\n\n\t// If found, fix type.\n\tif ( prev ) {\n\t\tbatch.setAttribute( item, 'type', prev.getAttribute( 'type' ) );\n\n\t\treturn;\n\t}\n\n\t// If not found, find a following sibling of `item` that is a list item of the same list as `item`.\n\tconst next = _seekListItem( item, true );\n\n\t// If found, fix type.\n\tif ( next ) {\n\t\tbatch.setAttribute( item, 'type', next.getAttribute( 'type' ) );\n\t}\n}\n\n// Seeks for a list item that has same indent as given `item`. May look through next siblings (`seekForward = true`) or\n// previous siblings (`seekForward = false`). Returns found list item or `null` if item has not been found.\nfunction _seekListItem( item, seekForward ) {\n\tlet result = item[ seekForward ? 'nextSibling' : 'previousSibling' ];\n\n\t// Look for the previous/next sibling that has same indent and is before a list item element with lower indent.\n\t// If elements are split by an element with lower indent, they are on different lists.\n\twhile ( result && result.is( 'listItem' ) && result.getAttribute( 'indent' ) >= item.getAttribute( 'indent' ) ) {\n\t\tif ( result.getAttribute( 'indent' ) == item.getAttribute( 'indent' ) ) {\n\t\t\t// We found sibling that is on the same list.\n\t\t\treturn result;\n\t\t}\n\n\t\tresult = result[ seekForward ? 'nextSibling' : 'previousSibling' ];\n\t}\n\n\treturn null;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-list/src/indentcommand.js\n// module id = 351\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module list/list\n */\n\nimport ListEngine from './listengine';\n\nimport numberedListIcon from '../theme/icons/numberedlist.svg';\nimport bulletedListIcon from '../theme/icons/bulletedlist.svg';\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport { parseKeystroke } from '@ckeditor/ckeditor5-utils/src/keyboard';\nimport ButtonView from '@ckeditor/ckeditor5-ui/src/button/buttonview';\n\n/**\n * The lists feature. It introduces the `numberedList` and `bulletedList` buttons which\n * allows to convert paragraphs to/from list items and indent/outdent them.\n *\n * See also {@link module:list/listengine~ListEngine}.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class List extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get requires() {\n\t\treturn [ ListEngine ];\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get pluginName() {\n\t\treturn 'list/list';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\t// Create two buttons and link them with numberedList and bulletedList commands.\n\t\tconst t = this.editor.t;\n\t\tthis._addButton( 'numberedList', t( 'Numbered List' ), numberedListIcon );\n\t\tthis._addButton( 'bulletedList', t( 'Bulleted List' ), bulletedListIcon );\n\n\t\t// Overwrite default enter key behavior.\n\t\t// If enter key is pressed with selection collapsed in empty list item, outdent it instead of breaking it.\n\t\tthis.listenTo( this.editor.editing.view, 'enter', ( evt, data ) => {\n\t\t\tconst doc = this.editor.document;\n\t\t\tconst positionParent = doc.selection.getLastPosition().parent;\n\n\t\t\tif ( doc.selection.isCollapsed && positionParent.name == 'listItem' && positionParent.isEmpty ) {\n\t\t\t\tthis.editor.execute( 'outdentList' );\n\n\t\t\t\tdata.preventDefault();\n\t\t\t\tevt.stop();\n\t\t\t}\n\t\t} );\n\n\t\t// Add tab key support.\n\t\t// When in list item, pressing tab should indent list item, if possible.\n\t\t// Pressing Shift+Tab shout outdent list item.\n\t\tthis.listenTo( this.editor.editing.view, 'keydown', ( evt, data ) => {\n\t\t\tlet commandName;\n\n\t\t\tif ( data.keystroke == parseKeystroke( 'Tab' ) ) {\n\t\t\t\tcommandName = 'indentList';\n\t\t\t} else if ( data.keystroke == parseKeystroke( 'Shift+Tab' ) ) {\n\t\t\t\tcommandName = 'outdentList';\n\t\t\t}\n\n\t\t\tif ( commandName ) {\n\t\t\t\tconst command = this.editor.commands.get( commandName );\n\n\t\t\t\tif ( command.isEnabled ) {\n\t\t\t\t\tthis.editor.execute( commandName );\n\n\t\t\t\t\tdata.preventDefault();\n\t\t\t\t\tevt.stop();\n\t\t\t\t}\n\t\t\t}\n\t\t} );\n\t}\n\n\t/**\n\t * Helper method for initializing a button and linking it with an appropriate command.\n\t *\n\t * @private\n\t * @param {String} commandName Name of the command.\n\t * @param {Object} label Button label.\n\t * @param {String} icon Source of the icon.\n\t */\n\t_addButton( commandName, label, icon ) {\n\t\tconst editor = this.editor;\n\t\tconst command = editor.commands.get( commandName );\n\n\t\teditor.ui.componentFactory.add( commandName, ( locale ) => {\n\t\t\tconst buttonView = new ButtonView( locale );\n\n\t\t\tbuttonView.set( {\n\t\t\t\tlabel: label,\n\t\t\t\ticon: icon,\n\t\t\t\ttooltip: true\n\t\t\t} );\n\n\t\t\t// Bind button model to command.\n\t\t\tbuttonView.bind( 'isOn', 'isEnabled' ).to( command, 'value', 'isEnabled' );\n\n\t\t\t// Execute command.\n\t\t\tthis.listenTo( buttonView, 'execute', () => editor.execute( commandName ) );\n\n\t\t\treturn buttonView;\n\t\t} );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-list/src/list.js\n// module id = 352\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module list/listcommand\n */\n\nimport Command from '@ckeditor/ckeditor5-core/src/command/command';\nimport Position from '@ckeditor/ckeditor5-engine/src/model/position';\nimport first from '@ckeditor/ckeditor5-utils/src/first';\n\n/**\n * The list command. It is used by the {@link module:list/list~List list feature}.\n *\n * @extends module:core/command/command~Command\n */\nexport default class ListCommand extends Command {\n\t/**\n\t * Creates an instance of the command.\n\t *\n\t * @param {module:core/editor/editor~Editor} editor Editor instance.\n\t * @param {'numbered'|'bulleted'} type List type that will be handled by this command.\n\t */\n\tconstructor( editor, type ) {\n\t\tsuper( editor );\n\n\t\t/**\n\t\t * The type of list created by the command.\n\t\t *\n\t\t * @readonly\n\t\t * @member {'numbered'|'bulleted'}\n\t\t */\n\t\tthis.type = type == 'bulleted' ? 'bulleted' : 'numbered';\n\n\t\t/**\n\t\t * Flag indicating whether the command is active, which means that selection starts in a list of the same type.\n\t\t *\n\t\t * @observable\n\t\t * @member {Boolean} #value\n\t\t */\n\t\tthis.set( 'value', false );\n\n\t\t// Listen on selection and document changes and set the current command's value.\n\t\tthis.listenTo( editor.document, 'changesDone', () => {\n\t\t\tthis.refreshValue();\n\t\t\tthis.refreshState();\n\t\t} );\n\t}\n\n\t/**\n\t * Sets command's value based on the document selection.\n\t */\n\trefreshValue() {\n\t\t// Check whether closest `listItem` ancestor of the position has a correct type.\n\t\tconst listItem = first( this.editor.document.selection.getSelectedBlocks() );\n\n\t\tthis.value = listItem && listItem.is( 'listItem' ) && listItem.getAttribute( 'type' ) == this.type;\n\t}\n\n\t/**\n\t * Executes command.\n\t *\n\t * @protected\n\t * @param {Object} [options] Options for executed command.\n\t * @param {module:engine/model/batch~Batch} [options.batch] Batch to collect all the change steps.\n\t * New batch will be created if this option is not set.\n\t */\n\t_doExecute( options = {} ) {\n\t\tconst document = this.editor.document;\n\t\tconst blocks = Array.from( document.selection.getSelectedBlocks() );\n\n\t\t// Whether we are turning off some items.\n\t\tconst turnOff = this.value === true;\n\t\t// If we are turning off items, we are going to rename them to paragraphs.\n\n\t\tdocument.enqueueChanges( () => {\n\t\t\tconst batch = options.batch || document.batch();\n\n\t\t\t// If part of a list got turned off, we need to handle (outdent) all of sub-items of the last turned-off item.\n\t\t\t// To be sure that model is all the time in a good state, we first fix items below turned-off item.\n\t\t\tif ( turnOff ) {\n\t\t\t\t// Start from the model item that is just after the last turned-off item.\n\t\t\t\tlet next = blocks[ blocks.length - 1 ].nextSibling;\n\t\t\t\tlet currentIndent = Number.POSITIVE_INFINITY;\n\t\t\t\tlet changes = [];\n\n\t\t\t\t// Correct indent of all items after the last turned off item.\n\t\t\t\t// Rules that should be followed:\n\t\t\t\t// 1. All direct sub-items of turned-off item should become indent 0, because the first item after it\n\t\t\t\t//    will be the first item of a new list. Other items are at the same level, so should have same 0 index.\n\t\t\t\t// 2. All items with indent lower than indent of turned-off item should become indent 0, because they\n\t\t\t\t//    should not end up as a child of any of list items that they were not children of before.\n\t\t\t\t// 3. All other items should have their indent changed relatively to it's parent.\n\t\t\t\t//\n\t\t\t\t// For example:\n\t\t\t\t// 1  * --------\n\t\t\t\t// 2     * --------\n\t\t\t\t// 3        * --------\t\t\t<-- this is turned off.\n\t\t\t\t// 4           * --------\t\t<-- this has to become indent = 0, because it will be first item on a new list.\n\t\t\t\t// 5              * --------\t<-- this should be still be a child of item above, so indent = 1.\n\t\t\t\t// 6        * --------\t\t\t<-- this has to become indent = 0, because it should not be a child of any of items above.\n\t\t\t\t// 7           * --------\t\t<-- this should be still be a child of item above, so indent = 1.\n\t\t\t\t// 8     * --------\t\t\t\t<-- this has to become indent = 0.\n\t\t\t\t// 9        * --------\t\t\t<-- this should still be a child of item above, so indent = 1.\n\t\t\t\t// 10          * --------\t\t<-- this should still be a child of item above, so indent = 2.\n\t\t\t\t// 11          * --------\t\t<-- this should still be at the same level as item above, so indent = 2.\n\t\t\t\t// 12 * --------\t\t\t\t<-- this and all below are left unchanged.\n\t\t\t\t// 13    * --------\n\t\t\t\t// 14       * --------\n\t\t\t\t//\n\t\t\t\t// After turning off 3 the list becomes:\n\t\t\t\t//\n\t\t\t\t// 1  * --------\n\t\t\t\t// 2     * --------\n\t\t\t\t//\n\t\t\t\t// 3  --------\n\t\t\t\t//\n\t\t\t\t// 4  * --------\n\t\t\t\t// 5     * --------\n\t\t\t\t// 6  * --------\n\t\t\t\t// 7     * --------\n\t\t\t\t// 8  * --------\n\t\t\t\t// 9     * --------\n\t\t\t\t// 10       * --------\n\t\t\t\t// 11       * --------\n\t\t\t\t// 12 * --------\n\t\t\t\t// 13    * --------\n\t\t\t\t// 14       * --------\n\t\t\t\t//\n\t\t\t\t// Thanks to this algorithm no lists are mismatched and no items get unexpected children/parent, while\n\t\t\t\t// those parent-child connection which are possible to maintain are still maintained. It's worth noting\n\t\t\t\t// that this is the same effect that we would be get by multiple use of outdent command. However doing\n\t\t\t\t// it like this is much more efficient because it's less operation (less memory usage, easier OT) and\n\t\t\t\t// less conversion (faster).\n\t\t\t\twhile ( next && next.name == 'listItem' && next.getAttribute( 'indent' ) !== 0 ) {\n\t\t\t\t\t// Check each next list item, as long as its indent is bigger than 0.\n\t\t\t\t\t// If the indent is 0 we are not going to change anything anyway.\n\t\t\t\t\tconst indent = next.getAttribute( 'indent' );\n\n\t\t\t\t\t// We check if that's item indent is lower as current relative indent.\n\t\t\t\t\tif ( indent < currentIndent ) {\n\t\t\t\t\t\t// If it is, current relative indent becomes that indent.\n\t\t\t\t\t\tcurrentIndent = indent;\n\t\t\t\t\t}\n\n\t\t\t\t\t// Fix indent relatively to current relative indent.\n\t\t\t\t\t// Note, that if we just changed the current relative indent, the newIndent will be equal to 0.\n\t\t\t\t\tconst newIndent = indent - currentIndent;\n\n\t\t\t\t\t// Save the entry in changes array. We do not apply it at the moment, because we will need to\n\t\t\t\t\t// reverse the changes so the last item is changed first.\n\t\t\t\t\t// This is to keep model in correct state all the time.\n\t\t\t\t\tchanges.push( { element: next, indent: newIndent } );\n\n\t\t\t\t\t// Find next item.\n\t\t\t\t\tnext = next.nextSibling;\n\t\t\t\t}\n\n\t\t\t\tchanges = changes.reverse();\n\n\t\t\t\tfor ( let item of changes ) {\n\t\t\t\t\tbatch.setAttribute( item.element, 'indent', item.indent );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// If we are turning on, we might change some items that are already `listItem`s but with different type.\n\t\t\t// Changing one nested list item to other type should also trigger changing all its siblings so the\n\t\t\t// whole nested list is of the same type.\n\t\t\t// Example (assume changing to numbered list):\n\t\t\t// * ------\t\t\t\t<-- do not fix, top level item\n\t\t\t//   * ------\t\t\t<-- fix, because latter list item of this item's list is changed\n\t\t\t//      * ------\t\t<-- do not fix, item is not affected (different list)\n\t\t\t//   * ------\t\t\t<-- fix, because latter list item of this item's list is changed\n\t\t\t//      * ------\t\t<-- fix, because latter list item of this item's list is changed\n\t\t\t//      * ---[--\t\t<-- already in selection\n\t\t\t//   * ------\t\t\t<-- already in selection\n\t\t\t//   * ------\t\t\t<-- already in selection\n\t\t\t// * ------\t\t\t\t<-- already in selection, but does not cause other list items to change because is top-level\n\t\t\t//   * ---]--\t\t\t<-- already in selection\n\t\t\t//   * ------\t\t\t<-- fix, because preceding list item of this item's list is changed\n\t\t\t//      * ------\t\t<-- do not fix, item is not affected (different list)\n\t\t\t// * ------\t\t\t\t<-- do not fix, top level item\n\t\t\tif ( !turnOff ) {\n\t\t\t\t// Find lowest indent among selected items. This will be indicator what is the indent of\n\t\t\t\t// top-most list affected by the command.\n\t\t\t\tlet lowestIndent = Number.POSITIVE_INFINITY;\n\n\t\t\t\tfor ( let item of blocks ) {\n\t\t\t\t\tif ( item.is( 'listItem' ) && item.getAttribute( 'indent' ) < lowestIndent ) {\n\t\t\t\t\t\tlowestIndent = item.getAttribute( 'indent' );\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\t// Do not execute the fix for top-level lists.\n\t\t\t\tlowestIndent = lowestIndent === 0 ? 1 : lowestIndent;\n\n\t\t\t\t// Fix types of list items that are \"before\" the selected blocks.\n\t\t\t\t_fixType( blocks, true, lowestIndent );\n\n\t\t\t\t// Fix types of list items that are \"after\" the selected blocks.\n\t\t\t\t_fixType( blocks, false, lowestIndent );\n\t\t\t}\n\n\t\t\t// Phew! Now it will be easier :).\n\t\t\t// For each block element that was in the selection, we will either: turn it to list item,\n\t\t\t// turn it to paragraph, or change it's type. Or leave it as it is.\n\t\t\t// Do it in reverse as there might be multiple blocks (same as with changing indents).\n\t\t\tfor ( let element of blocks.reverse() ) {\n\t\t\t\tif ( turnOff && element.name == 'listItem' ) {\n\t\t\t\t\t// We are turning off and the element is a `listItem` - it should be converted to `paragraph`.\n\t\t\t\t\t// List item specific attributes are removed by post fixer.\n\t\t\t\t\tbatch.rename( element, 'paragraph' );\n\t\t\t\t} else if ( !turnOff && element.name != 'listItem' ) {\n\t\t\t\t\t// We are turning on and the element is not a `listItem` - it should be converted to `listItem`.\n\t\t\t\t\t// The order of operations is important to keep model in correct state.\n\t\t\t\t\tbatch.setAttribute( element, 'type', this.type ).setAttribute( element, 'indent', 0 ).rename( element, 'listItem' );\n\t\t\t\t} else if ( !turnOff && element.name == 'listItem' && element.getAttribute( 'type' ) != this.type ) {\n\t\t\t\t\t// We are turning on and the element is a `listItem` but has different type - change it's type and\n\t\t\t\t\t// type of it's all siblings that have same indent.\n\t\t\t\t\tbatch.setAttribute( element, 'type', this.type );\n\t\t\t\t}\n\t\t\t}\n\t\t} );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\t_checkEnabled() {\n\t\t// If command value is true it means that we are in list item, so the command should be enabled.\n\t\tif ( this.value ) {\n\t\t\treturn true;\n\t\t}\n\n\t\tconst selection = this.editor.document.selection;\n\t\tconst schema = this.editor.document.schema;\n\n\t\tconst firstBlock = first( selection.getSelectedBlocks() );\n\n\t\tif ( !firstBlock ) {\n\t\t\treturn false;\n\t\t}\n\n\t\t// Otherwise, check if list item can be inserted at the position start.\n\t\treturn schema.check( {\n\t\t\tname: 'listItem',\n\t\t\tattributes: [ 'type', 'indent' ],\n\t\t\tinside: Position.createBefore( firstBlock )\n\t\t} );\n\t}\n}\n\n// Helper function used when one or more list item have their type changed. Fixes type of other list items\n// that are affected by the change (are in same lists) but are not directly in selection. The function got extracted\n// not to duplicated code, as same fix has to be performed before and after selection.\n//\n// @param {Array.<module:engine/model/node~Node>} blocks Blocks that are in selection.\n// @param {Boolean} isBackward Specified whether fix will be applied for blocks before first selected block (`true`)\n// or blocks after last selected block (`false`).\n// @param {Number} lowestIndent Lowest indent among selected blocks.\nfunction _fixType( blocks, isBackward, lowestIndent ) {\n\t// We need to check previous sibling of first changed item and next siblings of last changed item.\n\tconst startingItem = isBackward ? blocks[ 0 ] : blocks[ blocks.length - 1 ];\n\n\tif ( startingItem.is( 'listItem' ) ) {\n\t\tlet item = startingItem[ isBackward ? 'previousSibling' : 'nextSibling' ];\n\t\t// During processing items, keeps the lowest indent of already processed items.\n\t\t// This saves us from changing too many items.\n\t\t// Following example is for going forward as it is easier to read, however same applies to going backward.\n\t\t// * ------\n\t\t//   * ------\n\t\t//     * --[---\n\t\t//   * ------\t\t<-- `lowestIndent` should be 1\n\t\t//     * --]---\t\t<-- `startingItem`, `currentIndent` = 2, `lowestIndent` == 1\n\t\t//     * ------\t\t<-- should be fixed, `indent` == 2 == `currentIndent`\n\t\t//   * ------\t\t<-- should be fixed, set `currentIndent` to 1, `indent` == 1 == `currentIndent`\n\t\t//     * ------\t\t<-- should not be fixed, item is in different list, `indent` = 2, `indent` != `currentIndent`\n\t\t//   * ------\t\t<-- should be fixed, `indent` == 1 == `currentIndent`\n\t\t// * ------\t\t\t<-- break loop (`indent` < `lowestIndent`)\n\t\tlet currentIndent = startingItem.getAttribute( 'indent' );\n\n\t\t// Look back until a list item with indent lower than reference `lowestIndent`.\n\t\t// That would be the parent of nested sublist which contains item having `lowestIndent`.\n\t\twhile ( item && item.is( 'listItem' ) && item.getAttribute( 'indent' ) >= lowestIndent ) {\n\t\t\tif ( currentIndent > item.getAttribute( 'indent' ) ) {\n\t\t\t\tcurrentIndent = item.getAttribute( 'indent' );\n\t\t\t}\n\n\t\t\t// Found an item that is in the same nested sublist.\n\t\t\tif ( item.getAttribute( 'indent' ) == currentIndent ) {\n\t\t\t\t// Just add the item to selected blocks like it was selected by the user.\n\t\t\t\tblocks[ isBackward ? 'unshift' : 'push' ]( item );\n\t\t\t}\n\n\t\t\titem = item[ isBackward ? 'previousSibling' : 'nextSibling' ];\n\t\t}\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-list/src/listcommand.js\n// module id = 353\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module list/viewlistitemelement\n */\n\nimport ViewContainerElement from '@ckeditor/ckeditor5-engine/src/view/containerelement';\n\n/**\n * View element class representing list item (`<li>`). It extends {@link module:engine/view/containerelement~ContainerElement}\n * and overwrites {@link module:list/viewlistitemelement~ViewListItemElement#getFillerOffset evaluating whether filler offset}\n * is needed.\n *\n * @extends module:engine/view/containerelement~ContainerElement\n */\nexport default class ViewListItemElement extends ViewContainerElement {\n\t/**\n\t * Creates `<li>` view item.\n\t *\n\t * @param {Object|Iterable} [attrs] Collection of attributes.\n\t * @param {module:engine/view/node~Node|Iterable.<module:engine/view/node~Node>} [children] List of nodes to be inserted\n\t * into created element.\n\t */\n\tconstructor( attrs, children ) {\n\t\tsuper( 'li', attrs, children );\n\n\t\t/**\n\t\t * @inheritDoc\n\t\t */\n\t\tthis.getFillerOffset = getFillerOffset;\n\t}\n}\n\n// Implementation of getFillerOffset for ViewListItemElements.\n//\n// @returns {Number|null} Block filler offset or `null` if block filler is not needed.\nfunction getFillerOffset() {\n\t/*jshint validthis:true */\n\tconst hasOnlyLists = !this.isEmpty && ( this.getChild( 0 ).name == 'ul' || this.getChild( 0 ).name == 'ol' );\n\n\treturn this.isEmpty || hasOnlyLists ? 0 : null;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-list/src/viewlistitemelement.js\n// module id = 354\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module paragraph/paragraphcommand\n */\n\nimport Command from '@ckeditor/ckeditor5-core/src/command/command';\nimport Position from '@ckeditor/ckeditor5-engine/src/model/position';\nimport first from '@ckeditor/ckeditor5-utils/src/first';\n\n/**\n * The paragraph command.\n *\n * @extends module:core/command/command~Command\n */\nexport default class ParagraphCommand extends Command {\n\t/**\n\t * Creates an instance of the command.\n\t *\n\t * @param {module:core/editor/editor~Editor} editor Editor instance.\n\t */\n\tconstructor( editor ) {\n\t\tsuper( editor );\n\n\t\t/**\n\t\t * Value of the command, indicating whether it is applied in the context\n\t\t * of current {@link module:engine/model/document~Document#selection selection}.\n\t\t *\n\t\t * @readonly\n\t\t * @observable\n\t\t * @member {Boolean}\n\t\t */\n\t\tthis.set( 'value', false );\n\n\t\t// Update current value each time changes are done on document.\n\t\tthis.listenTo( editor.document, 'changesDone', () => {\n\t\t\tthis.refreshValue();\n\t\t\tthis.refreshState();\n\t\t} );\n\t}\n\n\t/**\n\t * Executes the command. All the {@link module:engine/model/schema~Schema#blocks blocks} in the selection\n\t * will be turned to paragraphs.\n\t *\n\t * @protected\n\t * @param {Object} [options] Options for executed command.\n\t * @param {module:engine/model/batch~Batch} [options.batch] Batch to collect all the change steps.\n\t * New batch will be created if this option is not set.\n\t * @param {module:engine/model/selection~Selection} [options.selection] Selection the command should be applied to.\n\t * By default, if not provided, the command is applied to {@link module:engine/model/document~Document#selection}.\n\t */\n\t_doExecute( options = {} ) {\n\t\tconst document = this.editor.document;\n\n\t\tdocument.enqueueChanges( () => {\n\t\t\tconst batch = options.batch || document.batch();\n\t\t\tconst blocks = ( options.selection || document.selection ).getSelectedBlocks();\n\n\t\t\tfor ( let block of blocks ) {\n\t\t\t\tif ( !block.is( 'paragraph' ) ) {\n\t\t\t\t\tbatch.rename( block, 'paragraph' );\n\t\t\t\t}\n\t\t\t}\n\t\t} );\n\t}\n\n\t/**\n\t * Updates command's {@link #value value} based on current selection.\n\t */\n\trefreshValue() {\n\t\tconst block = first( this.editor.document.selection.getSelectedBlocks() );\n\n\t\tthis.value = !!block && block.is( 'paragraph' );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\t_checkEnabled() {\n\t\tconst block = first( this.editor.document.selection.getSelectedBlocks() );\n\n\t\treturn !!block && this.editor.document.schema.check( {\n\t\t\tname: 'paragraph',\n\t\t\tinside: Position.createBefore( block )\n\t\t} );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-paragraph/src/paragraphcommand.js\n// module id = 355\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module presets/article\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\n\nimport EssentialsPreset from './essentials';\n\nimport BlockQuote from '@ckeditor/ckeditor5-block-quote/src/blockquote';\nimport Bold from '@ckeditor/ckeditor5-basic-styles/src/bold';\nimport Heading from '@ckeditor/ckeditor5-heading/src/heading';\nimport Image from '@ckeditor/ckeditor5-image/src/image';\nimport ImageCaption from '@ckeditor/ckeditor5-image/src/imagecaption';\nimport ImageStyle from '@ckeditor/ckeditor5-image/src/imagestyle';\nimport ImageToolbar from '@ckeditor/ckeditor5-image/src/imagetoolbar';\nimport Italic from '@ckeditor/ckeditor5-basic-styles/src/italic';\nimport Link from '@ckeditor/ckeditor5-link/src/link';\nimport List from '@ckeditor/ckeditor5-list/src/list';\nimport Paragraph from '@ckeditor/ckeditor5-paragraph/src/paragraph';\n\n/**\n * Article editor preset. Represents a set of features which enable in the editor\n * all functionalities of a simple article editor.\n * This preset follows [Editor Recommendations](https://github.com/ckeditor/editor-recommendations).\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class Article extends Plugin {\n\tstatic get requires() {\n\t\treturn [\n\t\t\tEssentialsPreset,\n\t\t\tBlockQuote,\n\t\t\tBold,\n\t\t\tHeading,\n\t\t\tImage,\n\t\t\tImageCaption,\n\t\t\tImageStyle,\n\t\t\tImageToolbar,\n\t\t\tItalic,\n\t\t\tLink,\n\t\t\tList,\n\t\t\tParagraph\n\t\t];\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-presets/src/article.js\n// module id = 356\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module presets/essentials\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\n\nimport Clipboard from '@ckeditor/ckeditor5-clipboard/src/clipboard';\nimport Enter from '@ckeditor/ckeditor5-enter/src/enter';\nimport Typing from '@ckeditor/ckeditor5-typing/src/typing';\nimport Undo from '@ckeditor/ckeditor5-undo/src/undo';\n\n/**\n * Essential editing features preset. Represents a set of features which enable in the editor\n * similar functionalities to a `<textarea>`.\n *\n * It includes: {@link module:clipboard/clipboard~Clipboard}, {@link module:enter/enter~Enter},\n * {@link module:typing/typing~Typing}, {@link module:undo/undo~Undo}.\n *\n * This preset does not define any block-level containers (such as {@link module:paragraph/paragraph~Paragraph}).\n * If your editor is supposed to handle block content, make sure to include it. You can also inlcude\n * the {@link module:presets/article~Article article preset}.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class Essentials extends Plugin {\n\tstatic get requires() {\n\t\treturn [ Clipboard, Enter, Typing, Undo ];\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-presets/src/essentials.js\n// module id = 357\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module typing/delete\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport DeleteCommand from './deletecommand';\nimport DeleteObserver from './deleteobserver';\n\n/**\n * The delete and backspace feature. Handles the <kbd>Delete</kbd> and <kbd>Backspace</kbd> keys in the editor.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class Delete extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get pluginName() {\n\t\treturn 'typing/delete';\n\t}\n\n\tinit() {\n\t\tconst editor = this.editor;\n\t\tconst editingView = editor.editing.view;\n\n\t\teditingView.addObserver( DeleteObserver );\n\n\t\teditor.commands.set( 'forwardDelete', new DeleteCommand( editor, 'forward' ) );\n\t\teditor.commands.set( 'delete', new DeleteCommand( editor, 'backward' ) );\n\n\t\tthis.listenTo( editingView, 'delete', ( evt, data ) => {\n\t\t\teditor.execute( data.direction == 'forward' ? 'forwardDelete' : 'delete', { unit: data.unit } );\n\t\t\tdata.preventDefault();\n\t\t} );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-typing/src/delete.js\n// module id = 358\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module typing/deletecommand\n */\n\nimport Command from '@ckeditor/ckeditor5-core/src/command/command';\nimport Selection from '@ckeditor/ckeditor5-engine/src/model/selection';\nimport ChangeBuffer from './changebuffer';\nimport count from '@ckeditor/ckeditor5-utils/src/count';\n\n/**\n * The delete command. Used by the {@link module:typing/delete~Delete delete feature} to handle the <kbd>Delete</kbd> and\n * <kbd>Backspace</kbd> keys.\n *\n * @extends core.command.Command\n */\nexport default class DeleteCommand extends Command {\n\t/**\n\t * Creates an instance of the command.\n\t *\n\t * @param {module:core/editor/editor~Editor} editor\n\t * @param {'forward'|'backward'} direction The directionality of the delete describing in what direction it\n\t * should consume the content when the selection is collapsed.\n\t */\n\tconstructor( editor, direction ) {\n\t\tsuper( editor );\n\n\t\t/**\n\t\t * The directionality of the delete describing in what direction it should\n\t\t * consume the content when the selection is collapsed.\n\t\t *\n\t\t * @readonly\n\t\t * @member {'forward'|'backward'} #direction\n\t\t */\n\t\tthis.direction = direction;\n\n\t\t/**\n\t\t * Delete's change buffer used to group subsequent changes into batches.\n\t\t *\n\t\t * @readonly\n\t\t * @private\n\t\t * @member {typing.ChangeBuffer} #buffer\n\t\t */\n\t\tthis._buffer = new ChangeBuffer( editor.document, editor.config.get( 'typing.undoStep' ) );\n\t}\n\n\t/**\n\t * Executes the delete command. Depending on whether the selection is collapsed or not, deletes its content\n\t * or a piece of content in the {@link #direction defined direction}.\n\t *\n\t * @param {Object} [options] The command options.\n\t * @param {'character'} [options.unit='character'] See {@link module:engine/controller/modifyselection~modifySelection}'s\n\t * options.\n\t */\n\t_doExecute( options = {} ) {\n\t\tconst doc = this.editor.document;\n\t\tconst dataController = this.editor.data;\n\n\t\tdoc.enqueueChanges( () => {\n\t\t\tthis._buffer.lock();\n\n\t\t\tconst selection = Selection.createFromSelection( doc.selection );\n\n\t\t\t// Try to extend the selection in the specified direction.\n\t\t\tif ( selection.isCollapsed ) {\n\t\t\t\tdataController.modifySelection( selection, { direction: this.direction, unit: options.unit } );\n\t\t\t}\n\n\t\t\t// If selection is still collapsed, then there's nothing to delete.\n\t\t\tif ( selection.isCollapsed ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tlet changeCount = 0;\n\n\t\t\tselection.getFirstRange().getMinimalFlatRanges().forEach( ( range ) => {\n\t\t\t\tchangeCount += count(\n\t\t\t\t\trange.getWalker( { singleCharacters: true, ignoreElementEnd: true, shallow: true } )\n\t\t\t\t);\n\t\t\t} );\n\n\t\t\tdataController.deleteContent( selection, this._buffer.batch, { merge: true } );\n\t\t\tthis._buffer.input( changeCount );\n\n\t\t\tdoc.selection.setRanges( selection.getRanges(), selection.isBackward );\n\n\t\t\tthis._buffer.unlock();\n\t\t} );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-typing/src/deletecommand.js\n// module id = 359\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module typing/deleteobserver\n */\n\nimport Observer from '@ckeditor/ckeditor5-engine/src/view/observer/observer';\nimport DomEventData from '@ckeditor/ckeditor5-engine/src/view/observer/domeventdata';\nimport { keyCodes } from '@ckeditor/ckeditor5-utils/src/keyboard';\n\n/**\n * Delete observer introduces the {@link module:engine/view/document~Document#event:delete} event.\n *\n * @extends engine.view.observer.Observer\n */\nexport default class DeleteObserver extends Observer {\n\tconstructor( document ) {\n\t\tsuper( document );\n\n\t\tdocument.on( 'keydown', ( evt, data ) => {\n\t\t\tconst deleteData = {};\n\n\t\t\tif ( data.keyCode == keyCodes.delete ) {\n\t\t\t\tdeleteData.direction = 'forward';\n\t\t\t\tdeleteData.unit = 'character';\n\t\t\t} else if ( data.keyCode == keyCodes.backspace ) {\n\t\t\t\tdeleteData.direction = 'backward';\n\t\t\t\tdeleteData.unit = 'codePoint';\n\t\t\t} else {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tdeleteData.unit = data.altKey ? 'word' : deleteData.unit;\n\n\t\t\tdocument.fire( 'delete', new DomEventData( document, data.domEvent, deleteData ) );\n\t\t} );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tobserve() {}\n}\n\n/**\n * Event fired when the user tries to delete content (e.g. presses <kbd>Delete</kbd> or <kbd>Backspace</kbd>).\n *\n * Note: This event is fired by the {@link module:typing/deleteobserver~DeleteObserver observer}\n * (usually registered by the {@link module:typing/delete~Delete delete feature}).\n *\n * @event module:engine/view/document~Document#event:delete\n * @param {module:engine/view/observer/domeventdata~DomEventData} data\n * @param {'forward'|'delete'} data.direction The direction in which the deletion should happen.\n * @param {'character'|'word'} data.unit The \"amount\" of content that should be deleted.\n */\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-typing/src/deleteobserver.js\n// module id = 360\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module typing/input\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport ModelRange from '@ckeditor/ckeditor5-engine/src/model/range';\nimport ViewPosition from '@ckeditor/ckeditor5-engine/src/view/position';\nimport ViewText from '@ckeditor/ckeditor5-engine/src/view/text';\nimport diff from '@ckeditor/ckeditor5-utils/src/diff';\nimport diffToChanges from '@ckeditor/ckeditor5-utils/src/difftochanges';\nimport { getCode } from '@ckeditor/ckeditor5-utils/src/keyboard';\nimport InputCommand from './inputcommand';\n\n/**\n * Handles text input coming from the keyboard or other input methods.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class Input extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get pluginName() {\n\t\treturn 'typing/input';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tconst editor = this.editor;\n\t\tconst editingView = editor.editing.view;\n\t\tconst inputCommand = new InputCommand( editor, editor.config.get( 'typing.undoStep' ) || 20 );\n\n\t\t// TODO The above default configuration value should be defined using editor.config.define() once it's fixed.\n\n\t\teditor.commands.set( 'input', inputCommand );\n\n\t\tthis.listenTo( editingView, 'keydown', ( evt, data ) => {\n\t\t\tthis._handleKeydown( data, inputCommand.buffer );\n\t\t}, { priority: 'lowest' } );\n\n\t\tthis.listenTo( editingView, 'mutations', ( evt, mutations, viewSelection ) => {\n\t\t\tthis._handleMutations( mutations, viewSelection );\n\t\t} );\n\t}\n\n\t/**\n\t * Handles the keydown event. We need to guess whether such keystroke is going to result\n\t * in typing. If so, then before character insertion happens, any selected content needs\n\t * to be deleted. Otherwise the default browser deletion mechanism would be\n\t * triggered, resulting in:\n\t *\n\t * * Hundreds of mutations which could not be handled.\n\t * * But most importantly, loss of control over how the content is being deleted.\n\t *\n\t * The method is used in a low-priority listener, hence allowing other listeners (e.g. delete or enter features)\n\t * to handle the event.\n\t *\n\t * @private\n\t * @param {module:engine/view/observer/keyobserver~KeyEventData} evtData\n\t * @param {module:typing/changebuffer~ChangeBuffer} buffer\n\t */\n\t_handleKeydown( evtData, buffer ) {\n\t\tconst doc = this.editor.document;\n\n\t\tif ( isSafeKeystroke( evtData ) || doc.selection.isCollapsed ) {\n\t\t\treturn;\n\t\t}\n\n\t\tbuffer.lock();\n\n\t\tdoc.enqueueChanges( () => {\n\t\t\tthis.editor.data.deleteContent( doc.selection, buffer.batch );\n\t\t} );\n\n\t\tbuffer.unlock();\n\t}\n\n\t/**\n\t * Handles DOM mutations.\n\t *\n\t * @private\n\t * @param {Array.<module:engine/view/document~MutatatedText|module:engine/view/document~MutatatedChildren>} mutations\n\t * @param {module:engine/view/selection~Selection|null} viewSelection\n\t */\n\t_handleMutations( mutations, viewSelection ) {\n\t\tnew MutationHandler( this.editor ).handle( mutations, viewSelection );\n\t}\n}\n\n/**\n * Helper class for translating DOM mutations into model changes.\n *\n * @private\n */\nclass MutationHandler {\n\t/**\n\t * Creates an instance of the mutation handler.\n\t *\n\t * @param {module:core/editor/editor~Editor} editor\n\t */\n\tconstructor( editor ) {\n\t\t/**\n\t\t * Editor instance for which mutations are handled.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:core/editor/editor~Editor} #editor\n\t\t */\n\t\tthis.editor = editor;\n\n\t\t/**\n\t\t * The editing controller.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/controller/editingcontroller~EditingController} #editing\n\t\t */\n\t\tthis.editing = this.editor.editing;\n\t}\n\n\t/**\n\t * Handles given mutations.\n\t *\n\t * @param {Array.<module:engine/view/observer/mutationobserver~MutatedText|\n\t * module:engine/view/observer/mutationobserver~MutatatedChildren>} mutations\n\t * @param {module:engine/view/selection~Selection|null} viewSelection\n\t */\n\thandle( mutations, viewSelection ) {\n\t\tfor ( let mutation of mutations ) {\n\t\t\t// Fortunately it will never be both.\n\t\t\tthis._handleTextMutation( mutation, viewSelection );\n\t\t\tthis._handleTextNodeInsertion( mutation );\n\t\t}\n\t}\n\n\t_handleTextMutation( mutation, viewSelection ) {\n\t\tif ( mutation.type != 'text' ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Replace &nbsp; inserted by the browser with normal space.\n\t\t// We want only normal spaces in the model and in the view. Renderer and DOM Converter will be then responsible\n\t\t// for rendering consecutive spaces using &nbsp;, but the model and the view has to be clear.\n\t\t// Other feature may introduce inserting non-breakable space on specific key stroke (for example shift + space).\n\t\t// However then it will be handled outside of mutations, like enter key is.\n\t\t// The replacing is here because it has to be done before `diff` and `diffToChanges` functions, as they\n\t\t// take `newText` and compare it to (cleaned up) view.\n\t\t// It could also be done in mutation observer too, however if any outside plugin would like to\n\t\t// introduce additional events for mutations, they would get already cleaned up version (this may be good or not).\n\t\tconst newText = mutation.newText.replace( /\\u00A0/g, ' ' );\n\t\t// To have correct `diffResult`, we also compare view node text data with &nbsp; replaced by space.\n\t\tconst oldText = mutation.oldText.replace( /\\u00A0/g, ' ' );\n\n\t\tconst diffResult = diff( oldText, newText );\n\n\t\t// Index where the first change happens. Used to set the position from which nodes will be removed and where will be inserted.\n\t\tlet firstChangeAt = null;\n\t\t// Index where the last change happens. Used to properly count how many characters have to be removed and inserted.\n\t\tlet lastChangeAt = null;\n\n\t\t// Get `firstChangeAt` and `lastChangeAt`.\n\t\tfor ( let i = 0; i < diffResult.length; i++ ) {\n\t\t\tconst change = diffResult[ i ];\n\n\t\t\tif ( change != 'equal' ) {\n\t\t\t\tfirstChangeAt = firstChangeAt === null ? i : firstChangeAt;\n\t\t\t\tlastChangeAt = i;\n\t\t\t}\n\t\t}\n\n\t\t// How many characters, starting from `firstChangeAt`, should be removed.\n\t\tlet deletions = 0;\n\t\t// How many characters, starting from `firstChangeAt`, should be inserted (basing on mutation.newText).\n\t\tlet insertions = 0;\n\n\t\tfor ( let i = firstChangeAt; i <= lastChangeAt; i++ ) {\n\t\t\t// If there is no change (equal) or delete, the character is existing in `oldText`. We count it for removing.\n\t\t\tif ( diffResult[ i ] != 'insert' ) {\n\t\t\t\tdeletions++;\n\t\t\t}\n\n\t\t\t// If there is no change (equal) or insert, the character is existing in `newText`. We count it for inserting.\n\t\t\tif ( diffResult[ i ] != 'delete' ) {\n\t\t\t\tinsertions++;\n\t\t\t}\n\t\t}\n\n\t\t// Try setting new model selection according to passed view selection.\n\t\tlet modelSelectionRange = null;\n\n\t\tif ( viewSelection ) {\n\t\t\tmodelSelectionRange = this.editing.mapper.toModelRange( viewSelection.getFirstRange() );\n\t\t}\n\n\t\t// Get the position in view and model where the changes will happen.\n\t\tconst viewPos = new ViewPosition( mutation.node, firstChangeAt );\n\t\tconst modelPos = this.editing.mapper.toModelPosition( viewPos );\n\t\tconst removeRange = ModelRange.createFromPositionAndShift( modelPos, deletions );\n\t\tconst insertText = newText.substr( firstChangeAt, insertions );\n\n\t\tthis.editor.execute( 'input', {\n\t\t\ttext: insertText,\n\t\t\trange: removeRange,\n\t\t\tresultRange: modelSelectionRange\n\t\t} );\n\t}\n\n\t_handleTextNodeInsertion( mutation ) {\n\t\tif ( mutation.type != 'children' ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// One new node.\n\t\tif ( mutation.newChildren.length - mutation.oldChildren.length != 1 ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Which is text.\n\t\tconst diffResult = diff( mutation.oldChildren, mutation.newChildren, compareChildNodes );\n\t\tconst changes = diffToChanges( diffResult, mutation.newChildren );\n\n\t\t// In case of [ delete, insert, insert ] the previous check will not exit.\n\t\tif ( changes.length > 1 ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst change = changes[ 0 ];\n\n\t\t// Which is text.\n\t\tif ( !( change.values[ 0 ] instanceof ViewText ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst viewPos = new ViewPosition( mutation.node, change.index );\n\t\tconst modelPos = this.editing.mapper.toModelPosition( viewPos );\n\t\tconst insertedText = change.values[ 0 ].data;\n\n\t\tthis.editor.execute( 'input', {\n\t\t\t// Replace &nbsp; inserted by the browser with normal space.\n\t\t\t// See comment in `_handleTextMutation`.\n\t\t\t// In this case we don't need to do this before `diff` because we diff whole nodes.\n\t\t\t// Just change &nbsp; in case there are some.\n\t\t\ttext: insertedText.replace( /\\u00A0/g, ' ' ),\n\t\t\trange: new ModelRange( modelPos )\n\t\t} );\n\t}\n}\n\nconst safeKeycodes = [\n\tgetCode( 'arrowUp' ),\n\tgetCode( 'arrowRight' ),\n\tgetCode( 'arrowDown' ),\n\tgetCode( 'arrowLeft' ),\n\t9,  // Tab\n\t16, // Shift\n\t17, // Ctrl\n\t18, // Alt\n\t20, // CapsLock\n\t27, // Escape\n\t33, // PageUp\n\t34, // PageDown\n\t35, // Home\n\t36, // End\n\t229 // Composition start key\n];\n\n// Function keys.\nfor ( let code = 112; code <= 135; code++ ) {\n\tsafeKeycodes.push( code );\n}\n\n// Returns `true` if a keystroke should not cause any content change caused by \"typing\".\n//\n// Note: This implementation is very simple and will need to be refined with time.\n//\n// @param {engine.view.observer.keyObserver.KeyEventData} keyData\n// @returns {Boolean}\nfunction isSafeKeystroke( keyData ) {\n\t// Keystrokes which contain Ctrl don't represent typing.\n\tif ( keyData.ctrlKey ) {\n\t\treturn true;\n\t}\n\n\treturn safeKeycodes.includes( keyData.keyCode );\n}\n\n// Helper function that compares whether two given view nodes are same. It is used in `diff` when it's passed an array\n// with child nodes.\nfunction compareChildNodes( oldChild, newChild ) {\n\tif ( oldChild instanceof ViewText && newChild instanceof ViewText ) {\n\t\treturn oldChild.data === newChild.data;\n\t} else {\n\t\treturn oldChild === newChild;\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-typing/src/input.js\n// module id = 361\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module typing/inputcommand\n */\n\nimport Command from '@ckeditor/ckeditor5-core/src/command/command';\nimport ChangeBuffer from './changebuffer';\n\n/**\n * The input command. Used by the {@link module:typing/input~Input input feature} to handle typing.\n *\n * @extends module:core/command/command~Command\n */\nexport default class InputCommand extends Command {\n\t/**\n\t * Creates an instance of the command.\n\t *\n\t * @param {module:core/editor/editor~Editor} editor\n\t * @param {Number} undoStepSize The maximum number of atomic changes\n\t * which can be contained in one batch in the command buffer.\n\t */\n\tconstructor( editor, undoStepSize ) {\n\t\tsuper( editor );\n\n\t\t/**\n\t\t * Typing's change buffer used to group subsequent changes into batches.\n\t\t *\n\t\t * @readonly\n\t\t * @private\n\t\t * @member {module:typing/changebuffer~ChangeBuffer} #_buffer\n\t\t */\n\t\tthis._buffer = new ChangeBuffer( editor.document, undoStepSize );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tdestroy() {\n\t\tsuper.destroy();\n\n\t\tthis._buffer.destroy();\n\t\tthis._buffer = null;\n\t}\n\n\t/**\n\t * The current change buffer.\n\t *\n\t * @type {module:typing/changebuffer~ChangeBuffer}\n\t */\n\tget buffer() {\n\t\treturn this._buffer;\n\t}\n\n\t/**\n\t * Executes the input command. It replaces the content within the given range with the given text.\n\t * Replacing is a two step process, first content within the range is removed and then new text is inserted\n\t * on the beginning of the range (which after removal is a collapsed range).\n\t *\n\t * @param {Object} [options] The command options.\n\t * @param {String} [options.text=''] Text to be inserted.\n\t * @param {module:engine/model/range~Range} [options.range] Range in which the text is inserted. Defaults\n\t * to the first range in the current selection.\n\t * @param {module:engine/model/range~Range} [options.resultRange] Range at which the selection\n\t * should be placed after the insertion. If not specified, the selection will be placed right after\n\t * the inserted text.\n\t */\n\t_doExecute( options = {} ) {\n\t\tconst doc = this.editor.document;\n\t\tconst text = options.text || '';\n\t\tconst textInsertions = text.length;\n\t\tconst range = options.range || doc.selection.getFirstRange();\n\t\tconst resultRange = options.resultRange;\n\n\t\tdoc.enqueueChanges( () => {\n\t\t\tconst isCollapsedRange = range.isCollapsed;\n\n\t\t\tthis._buffer.lock();\n\n\t\t\tif ( !isCollapsedRange ) {\n\t\t\t\tthis._buffer.batch.remove( range );\n\t\t\t}\n\n\t\t\tthis._buffer.batch.weakInsert( range.start, text );\n\n\t\t\tif ( resultRange ) {\n\t\t\t\tthis.editor.data.model.selection.setRanges( [ resultRange ] );\n\t\t\t} else if ( isCollapsedRange ) {\n\t\t\t\t// If range was collapsed just shift the selection by the number of inserted characters.\n\t\t\t\tthis.editor.data.model.selection.collapse( range.start.getShiftedBy( textInsertions ) );\n\t\t\t}\n\n\t\t\tthis._buffer.unlock();\n\n\t\t\tthis._buffer.input( textInsertions );\n\t\t} );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-typing/src/inputcommand.js\n// module id = 362\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module typing/typing\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport Input from './input';\nimport Delete from './delete';\n\n/**\n * The typing feature. Handles typing.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class Typing extends Plugin {\n\tstatic get requires() {\n\t\treturn [ Input, Delete ];\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get pluginName() {\n\t\treturn 'typing/typing';\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-typing/src/typing.js\n// module id = 363\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/bindings/escpresshandler\n */\n\n/* global document */\n\nimport { keyCodes } from '@ckeditor/ckeditor5-utils/src/keyboard';\n\n/**\n * Detects <kbd>Esc</kbd> `keydown` DOM event and fires an action.\n *\n * @param {Object} options Configuration options.\n * @param {module:utils/dom/emittermixin~Emitter} options.emitter The emitter to which this behavior should be added.\n * @param {Function} options.activator Function returning a `Boolean`, to determine whether handler is active.\n * @param {Function} options.callback Function fired after <kbd>Esc</kbd> is pressed.\n */\nexport default function escPressHandler( { emitter, activator, callback } ) {\n\temitter.listenTo( document, 'keydown', ( evt, { keyCode } ) => {\n\t\tif ( keyCode == keyCodes.esc && activator() ) {\n\t\t\tcallback();\n\t\t}\n\t} );\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-ui/src/bindings/escpresshandler.js\n// module id = 364\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/componentfactory\n */\n\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/**\n * Class implementing the UI component factory.\n *\n * Factories of specific UI components can be registered under their unique names. Registered\n * components can be later instantiated by providing the name of the component.\n *\n * The main use case for the component factory is the {@link module:core/editor/editorui~EditorUI#componentFactory} factory.\n */\nexport default class ComponentFactory {\n\t/**ś\n\t * Creates ComponentFactory instance.\n\t *\n\t * @constructor\n\t * @param {module:core/editor/editor~Editor} editor The editor instance.\n\t */\n\tconstructor( editor ) {\n\t\t/**\n\t\t * The editor instance.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:core/editor/editor~Editor}\n\t\t */\n\t\tthis.editor = editor;\n\n\t\t/**\n\t\t * Registered component factories.\n\t\t *\n\t\t * @private\n\t\t * @member {Map}\n\t\t */\n\t\tthis._components = new Map();\n\t}\n\n\t/**\n\t * Registers a component factory.\n\t *\n\t * @param {String} name The name of the component.\n\t * @param {Function} ControllerClass The component controller constructor.\n\t * @param {Function} ViewClass The component view constructor.\n\t * @param {Function} [callback] The callback to process the view instance,\n\t * i.e. to set attribute values, create attribute bindings, etc.\n\t */\n\tadd( name, callback ) {\n\t\tif ( this._components.get( name ) ) {\n\t\t\t/**\n\t\t\t * The item already exists in the component factory.\n\t\t\t *\n\t\t\t * @error componentfactory-item-exists\n\t\t\t * @param {String} name The name of the component.\n\t\t\t */\n\t\t\tthrow new CKEditorError(\n\t\t\t\t'componentfactory-item-exists: The item already exists in the component factory.', { name }\n\t\t\t);\n\t\t}\n\n\t\tthis._components.set( name, callback );\n\t}\n\n\t/**\n\t * Creates a component view instance.\n\t *\n\t * @param {String} name The name of the component.\n\t * @returns {module:ui/view~View} The instantiated component view.\n\t */\n\tcreate( name ) {\n\t\tconst component = this._components.get( name );\n\n\t\tif ( !component ) {\n\t\t\t/**\n\t\t\t * There is no such UI component in the factory.\n\t\t\t *\n\t\t\t * @error componentfactory-item-missing\n\t\t\t * @param {String} name The name of the missing component.\n\t\t\t */\n\t\t\tthrow new CKEditorError(\n\t\t\t\t'componentfactory-item-missing: There is no such UI component in the factory.', { name }\n\t\t\t);\n\t\t}\n\n\t\treturn component( this.editor.locale );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-ui/src/componentfactory.js\n// module id = 365\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/dropdown/createdropdown\n */\n\nimport ButtonView from '../button/buttonview';\nimport DropdownView from './dropdownview';\nimport DropdownPanelView from './dropdownpanelview';\n\n/**\n * Creates an instance of {@link module:ui/dropdown/dropdownview~DropdownView} class using\n * defined model.\n *\n * @param {module:ui/dropdown/dropdownmodel~DropdownModel} model Model of this dropdown.\n * @param {module:utils/locale~Locale} locale The locale instance.\n * @returns {module:ui/dropdown/dropdownview~DropdownView} The dropdown view instance.\n */\nexport default function createDropdown( model, locale ) {\n\tconst buttonView = new ButtonView( locale );\n\tbuttonView.bind( 'label', 'isOn', 'isEnabled', 'withText', 'keystroke', 'tooltip' ).to( model );\n\n\tconst panelView = new DropdownPanelView( locale );\n\n\treturn new DropdownView( locale, buttonView, panelView );\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-ui/src/dropdown/createdropdown.js\n// module id = 366\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/dropdown/dropdownpanelview\n */\n\nimport View from '../view';\nimport Template from '../template';\n\n/**\n * The dropdown panel view class.\n *\n * @extends module:ui/view~View\n */\nexport default class DropdownPanelView extends View {\n\t/**\n\t * @inheritDoc\n\t */\n\tconstructor( locale ) {\n\t\tsuper( locale );\n\n\t\tconst bind = this.bindTemplate;\n\n\t\t/**\n\t\t * Controls whether the panel is visible.\n\t\t *\n\t\t * @observable\n\t\t * @member {Boolean} #isVisible\n\t\t */\n\t\tthis.set( 'isVisible', false );\n\n\t\t/**\n\t\t * Collection of the child views.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:ui/viewcollection~ViewCollection}\n\t\t */\n\t\tthis.children = this.createCollection();\n\n\t\tthis.template = new Template( {\n\t\t\ttag: 'div',\n\n\t\t\tattributes: {\n\t\t\t\tclass: [\n\t\t\t\t\t'ck-reset',\n\t\t\t\t\t'ck-dropdown__panel',\n\t\t\t\t\tbind.if( 'isVisible', 'ck-dropdown__panel-visible' )\n\t\t\t\t]\n\t\t\t},\n\n\t\t\tchildren: this.children\n\t\t} );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-ui/src/dropdown/dropdownpanelview.js\n// module id = 367\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/dropdown/dropdownview\n */\n\nimport View from '../view';\nimport Template from '../template';\nimport FocusTracker from '@ckeditor/ckeditor5-utils/src/focustracker';\nimport KeystrokeHandler from '@ckeditor/ckeditor5-utils/src/keystrokehandler';\n\n/**\n * The dropdown view class.\n *\n * @extends module:ui/view~View\n */\nexport default class DropdownView extends View {\n\t/**\n\t * @inheritDoc\n\t */\n\tconstructor( locale, buttonView, panelView ) {\n\t\tsuper( locale );\n\n\t\t// Extend button's template before it's registered as a child of the dropdown because\n\t\t// by doing so, its #element is rendered and any post–render template extension will\n\t\t// not be reflected in DOM.\n\t\tTemplate.extend( buttonView.template, {\n\t\t\tattributes: {\n\t\t\t\tclass: [\n\t\t\t\t\t'ck-dropdown__button'\n\t\t\t\t]\n\t\t\t}\n\t\t} );\n\n\t\t/**\n\t\t * Button of this dropdown view.\n\t\t *\n\t\t * @readonly\n\t\t * @member {ui.button.ButtonView} #buttonView\n\t\t */\n\t\tthis.buttonView = buttonView;\n\n\t\t/**\n\t\t * Panel of this dropdown view.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:ui/dropdown/dropdownpanelview~DropdownPanelView} #panelView\n\t\t */\n\t\tthis.panelView = panelView;\n\n\t\t/**\n\t\t * Controls whether the dropdown view is open, which also means its\n\t\t * {@link #panelView panel} is visible.\n\t\t *\n\t\t * @observable\n\t\t * @member {Boolean} #isOpen\n\t\t */\n\t\tthis.set( 'isOpen', false );\n\n\t\t/**\n\t\t * Tracks information about DOM focus in the list.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:utils/focustracker~FocusTracker}\n\t\t */\n\t\tthis.focusTracker = new FocusTracker();\n\n\t\t/**\n\t\t * Instance of the {@link module:utils/keystrokehandler~KeystrokeHandler}.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:utils/keystrokehandler~KeystrokeHandler}\n\t\t */\n\t\tthis.keystrokes = new KeystrokeHandler();\n\n\t\tthis.template = new Template( {\n\t\t\ttag: 'div',\n\n\t\t\tattributes: {\n\t\t\t\tclass: [\n\t\t\t\t\t'ck-dropdown'\n\t\t\t\t]\n\t\t\t},\n\n\t\t\tchildren: [\n\t\t\t\tbuttonView,\n\t\t\t\tpanelView\n\t\t\t]\n\t\t} );\n\n\t\t// Toggle the the dropdown when it's button has been clicked.\n\t\tthis.listenTo( buttonView, 'execute', () => this.isOpen = !this.isOpen );\n\n\t\t// Toggle the visibility of the panel when the dropdown becomes open.\n\t\tpanelView.bind( 'isVisible' ).to( this, 'isOpen' );\n\n\t\t/**\n\t\t * The label of the dropdown.\n\t\t *\n\t\t * @observable\n\t\t * @member {String} #label\n\t\t */\n\n\t\t/**\n\t\t * Controls whether the dropdown is enabled (can be clicked).\n\t\t *\n\t\t * @observable\n\t\t * @member {Boolean} #isEnabled\n\t\t */\n\n\t\t/**\n\t\t * Controls whether the {@link #buttonView} is \"pushed\".\n\t\t *\n\t\t * @observable\n\t\t * @member {Boolean} #isOn\n\t\t */\n\n\t\t/**\n\t\t * (Optional) Whether the label of the dropdown is visible. See {@link module:ui/button/buttonview~ButtonView#withText}.\n\t\t *\n\t\t * @observable\n\t\t * @member {Boolean} #withText\n\t\t */\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\t// Listen for keystrokes coming from within #element.\n\t\tthis.keystrokes.listenTo( this.element );\n\n\t\t// Register #element in the focus tracker.\n\t\tthis.focusTracker.add( this.element );\n\n\t\tconst closeDropdown = ( data, cancel ) => {\n\t\t\tif ( this.isOpen ) {\n\t\t\t\tthis.buttonView.focus();\n\t\t\t\tthis.isOpen = false;\n\t\t\t\tcancel();\n\t\t\t}\n\t\t};\n\n\t\t// Open the dropdown panel using the arrow down key, just like with return or space.\n\t\tthis.keystrokes.set( 'arrowdown', ( data, cancel ) => {\n\t\t\tif ( !this.isOpen ) {\n\t\t\t\tthis.isOpen = true;\n\t\t\t\tcancel();\n\t\t\t}\n\t\t} );\n\n\t\t// Block the right arrow key (until nested dropdowns are implemented).\n\t\tthis.keystrokes.set( 'arrowright', ( data, cancel ) => {\n\t\t\tif ( this.isOpen ) {\n\t\t\t\tcancel();\n\t\t\t}\n\t\t} );\n\n\t\t// Close the dropdown using the arrow left/escape key.\n\t\tthis.keystrokes.set( 'arrowleft', closeDropdown );\n\t\tthis.keystrokes.set( 'esc', closeDropdown );\n\n\t\treturn super.init();\n\t}\n\n\t/**\n\t * Focuses the {@link #buttonView}.\n\t */\n\tfocus() {\n\t\tthis.buttonView.focus();\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-ui/src/dropdown/dropdownview.js\n// module id = 368\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/dropdown/list/createlistdropdown\n */\n\n/* global document */\n\nimport ListView from '../../list/listview';\nimport ListItemView from '../../list/listitemview';\nimport createDropdown from '../createdropdown';\n\n/**\n * Creates an instance of {@link module:ui/dropdown/list/listdropdownview~ListDropdownView} class using\n * defined model.\n *\n * @param {module:ui/dropdown/list/listdropdownmodel~ListDropdownModel} model Model of this list dropdown.\n * @param {module:utils/locale~Locale} locale The locale instance.\n * @returns {module:ui/dropdown/list/listdropdownview~ListDropdownView} The list dropdown view instance.\n */\nexport default function createListDropdown( model, locale ) {\n\tconst dropdownView = createDropdown( model, locale );\n\n\tconst listView = dropdownView.listView = new ListView( locale );\n\n\tlistView.items.bindTo( model.items ).using( itemModel => {\n\t\tconst item = new ListItemView( locale );\n\n\t\t// Bind all attributes of the model to the item view.\n\t\titem.bind( ...Object.keys( itemModel ) ).to( itemModel );\n\n\t\treturn item;\n\t} );\n\n\t// TODO: Delegate all events instead of just execute.\n\tlistView.items.delegate( 'execute' ).to( dropdownView );\n\n\tdropdownView.panelView.children.add( listView );\n\n\tdropdownView.on( 'change:isOpen', ( evt, name, value ) => {\n\t\tif ( value ) {\n\t\t\tattachDocumentClickListener( dropdownView );\n\t\t} else {\n\t\t\tdropdownView.stopListening( document );\n\t\t}\n\t} );\n\n\t// Close the dropdown when one of the list items has been executed.\n\tdropdownView.on( 'execute', () => {\n\t\tdropdownView.isOpen = false;\n\t} );\n\n\t// If the dropdown panel is already open, the arrow down key should\n\t// focus the first element in list.\n\tdropdownView.keystrokes.set( 'arrowdown', ( data, cancel ) => {\n\t\tif ( dropdownView.isOpen ) {\n\t\t\tlistView.focus();\n\t\t\tcancel();\n\t\t}\n\t} );\n\n\t// If the dropdown panel is already open, the arrow up key should\n\t// focus the last element in the list.\n\tdropdownView.keystrokes.set( 'arrowup', ( data, cancel ) => {\n\t\tif ( dropdownView.isOpen ) {\n\t\t\tlistView.focusLast();\n\t\t\tcancel();\n\t\t}\n\t} );\n\n\treturn dropdownView;\n}\n\n// Attaches a \"click\" listener in DOM to check if any element outside\n// the dropdown has been clicked.\n//\n// @private\n// @param {module:ui/dropdown/listdropdownview~ListDropdownView} dropdownView\nfunction attachDocumentClickListener( dropdownView ) {\n\t// TODO: It will probably be focus/blur-based rather than click. It should be bound\n\t// to focusmanager of some sort.\n\tdropdownView.listenTo( document, 'click', ( evtInfo, { target: domEvtTarget } ) => {\n\t\t// Collapse the dropdown when the webpage outside of the component is clicked.\n\t\tif ( dropdownView.element != domEvtTarget && !dropdownView.element.contains( domEvtTarget ) ) {\n\t\t\tdropdownView.isOpen = false;\n\t\t}\n\t} );\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-ui/src/dropdown/list/createlistdropdown.js\n// module id = 369\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/editableui/editableuiview\n */\n\nimport View from '../view';\nimport Template from '../template';\n\n/**\n * The editable UI view class.\n *\n * @extends module:ui/view~View\n */\nexport default class EditableUIView extends View {\n\t/**\n\t * Creates an instance of EditableUIView class.\n\t *\n\t * @param {module:utils/locale~Locale} [locale] The locale instance.\n\t * @param {HTMLElement} [editableElement] The editable element. If not specified, this view\n\t * should create it. Otherwise, the existing element should be used.\n\t */\n\tconstructor( locale, editableElement ) {\n\t\tsuper( locale );\n\n\t\tconst bind = this.bindTemplate;\n\n\t\tif ( editableElement ) {\n\t\t\tthis.element = this.editableElement = editableElement;\n\t\t}\n\n\t\tthis.template = new Template( {\n\t\t\ttag: 'div',\n\t\t\tattributes: {\n\t\t\t\tclass: [\n\t\t\t\t\tbind.to( 'isFocused', value => value ? 'ck-focused' : 'ck-blurred' ),\n\t\t\t\t\t'ck-editor__editable'\n\t\t\t\t],\n\t\t\t\tcontenteditable: bind.to( 'isReadOnly', value => !value ),\n\t\t\t}\n\t\t} );\n\n\t\t/**\n\t\t * Controls whether the editable is writable or not.\n\t\t *\n\t\t * @observable\n\t\t * @member {Boolean} #isReadOnly\n\t\t */\n\t\tthis.set( 'isReadOnly', false );\n\n\t\t/**\n\t\t * Controls whether the editable is focused, i.e. the user is typing in it.\n\t\t *\n\t\t * @observable\n\t\t * @member {Boolean} #isFocused\n\t\t */\n\t\tthis.set( 'isFocused', false );\n\n\t\t/**\n\t\t * An external {@link #editableElement} passed into the constructor, which also means\n\t\t * the view will not render its {@link #template}.\n\t\t *\n\t\t * @member {HTMLElement} #externalElement\n\t\t */\n\t\tthis.externalElement = editableElement;\n\n\t\t/**\n\t\t * The element which is the main editable element (usually the one with `contentEditable=\"true\"`).\n\t\t *\n\t\t * @readonly\n\t\t * @member {HTMLElement} #editableElement\n\t\t */\n\t}\n\n\t/**\n\t * Initializes the view by either applying the {@link #template} to the existing\n\t * {@link #editableElement} or assigning {@link #element} as {@link #editableElement}.\n\t *\n\t * @returns {Promise}\n\t */\n\tinit() {\n\t\tif ( this.externalElement ) {\n\t\t\tthis.template.apply( this.externalElement );\n\t\t} else {\n\t\t\tthis.editableElement = this.element;\n\t\t}\n\n\t\treturn super.init();\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tdestroy() {\n\t\tif ( this.externalElement ) {\n\t\t\tthis.template.revert( this.externalElement );\n\t\t}\n\n\t\treturn super.destroy();\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-ui/src/editableui/editableuiview.js\n// module id = 370\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/editableui/inline/inlineeditableuiview\n */\n\nimport EditableUIView from '../../editableui/editableuiview';\nimport Template from '../../template';\n\n/**\n * The inline editable UI class implementing an inline {@link module:ui/editableui/editableuiview~EditableUIView}.\n *\n * @extends module:ui/editableui/editableuiview~EditableUIView\n */\nexport default class InlineEditableUIView extends EditableUIView {\n\t/**\n\t * Creates an instance of the InlineEditableUIView class.\n\t *\n\t * @param {module:utils/locale~Locale} [locale] The locale instance.\n\t * @param {HTMLElement} [editableElement] The editable element. If not specified, the\n\t * {@link module:ui/editableui/editableuiview~EditableUIView}\n\t * should create it. Otherwise, the existing element should be used.\n\t */\n\tconstructor( locale, editableElement ) {\n\t\tsuper( locale, editableElement );\n\n\t\tconst bind = this.bindTemplate;\n\t\tconst t = this.t;\n\n\t\t/**\n\t\t * The name of the editable UI view.\n\t\t *\n\t\t * @observable\n\t\t * @member {String} #name\n\t\t */\n\t\tthis.set( 'name', null );\n\n\t\tconst getLabel = ( value ) => {\n\t\t\treturn t( 'Rich Text Editor, %0', [ value ] );\n\t\t};\n\n\t\tTemplate.extend( this.template, {\n\t\t\tattributes: {\n\t\t\t\trole: 'textbox',\n\t\t\t\t'aria-label': bind.to( 'name', getLabel ),\n\t\t\t\tclass: 'ck-editor__editable_inline'\n\t\t\t}\n\t\t} );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-ui/src/editableui/inline/inlineeditableuiview.js\n// module id = 371\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/editorui/boxed/boxededitoruiview\n */\n\nimport EditorUIView from '../../editorui/editoruiview';\nimport uid from '@ckeditor/ckeditor5-utils/src/uid';\nimport Template from '../../template';\n\n/**\n * The boxed editor UI view class. This class represents an editor interface\n * consisting of a toolbar and an editable area, enclosed within a box.\n *\n * @extends module:ui/editorui/editoruiview~EditorUIView\n */\nexport default class BoxedEditorUIView extends EditorUIView {\n\t/**\n\t * Creates an instance of the boxed editor UI view class.\n\t *\n\t * @param {module:utils/locale~Locale} locale The locale instance..\n\t */\n\tconstructor( locale ) {\n\t\tsuper( locale );\n\n\t\tconst t = this.t;\n\t\tconst ariaLabelUid = uid();\n\n\t\t/**\n\t\t * The UI's width.\n\t\t *\n\t\t * @observable\n\t\t * @member {Number} #width\n\t\t */\n\t\tthis.set( 'width', null );\n\n\t\t/**\n\t\t * The UI's height.\n\t\t *\n\t\t * @observable\n\t\t * @member {Number} #height\n\t\t */\n\t\tthis.set( 'height', null );\n\n\t\t/**\n\t\t * Collection of the child views located in the top (`.ck-editor__top`)\n\t\t * area of the UI.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:ui/viewcollection~ViewCollection}\n\t\t */\n\t\tthis.top = this.createCollection();\n\n\t\t/**\n\t\t * Collection of the child views located in the main (`.ck-editor__main`)\n\t\t * area of the UI.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:ui/viewcollection~ViewCollection}\n\t\t */\n\t\tthis.main = this.createCollection();\n\n\t\tthis.template = new Template( {\n\t\t\ttag: 'div',\n\n\t\t\tattributes: {\n\t\t\t\tclass: [\n\t\t\t\t\t'ck-reset',\n\t\t\t\t\t'ck-editor',\n\t\t\t\t\t'ck-rounded-corners'\n\t\t\t\t],\n\t\t\t\trole: 'application',\n\t\t\t\tdir: 'ltr',\n\t\t\t\tlang: locale.lang,\n\t\t\t\t'aria-labelledby': `cke-editor__aria-label_${ ariaLabelUid }`\n\t\t\t},\n\n\t\t\tchildren: [\n\t\t\t\t{\n\t\t\t\t\ttag: 'span',\n\t\t\t\t\tattributes: {\n\t\t\t\t\t\tid: `cke-editor__aria-label_${ ariaLabelUid }`,\n\t\t\t\t\t\tclass: 'cke-voice-label'\n\t\t\t\t\t},\n\t\t\t\t\tchildren: [\n\t\t\t\t\t\t// TODO: Editor name?\n\t\t\t\t\t\tt( 'Rich Text Editor' )\n\t\t\t\t\t]\n\t\t\t\t},\n\t\t\t\t{\n\t\t\t\t\ttag: 'div',\n\t\t\t\t\tattributes: {\n\t\t\t\t\t\tclass: 'ck-editor__top ck-reset_all',\n\t\t\t\t\t\trole: 'presentation'\n\t\t\t\t\t},\n\t\t\t\t\tchildren: this.top\n\t\t\t\t},\n\t\t\t\t{\n\t\t\t\t\ttag: 'div',\n\t\t\t\t\tattributes: {\n\t\t\t\t\t\tclass: 'ck-editor__main',\n\t\t\t\t\t\trole: 'presentation'\n\t\t\t\t\t},\n\t\t\t\t\tchildren: this.main\n\t\t\t\t}\n\t\t\t]\n\t\t} );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-ui/src/editorui/boxed/boxededitoruiview.js\n// module id = 372\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/editorui/editoruiview\n */\n\n/* globals document */\n\nimport View from '../view';\nimport Template from '../template';\n\n/**\n * The editor UI view class. Base class for the editor main views.\n *\n * @extends module:ui/view~View\n */\nexport default class EditorUIView extends View {\n\t/**\n\t * Creates an instance of the editor UI view class.\n\t *\n\t * @param {module:utils/locale~Locale} [locale] The locale instance.\n\t */\n\tconstructor( locale ) {\n\t\tsuper( locale );\n\n\t\t/**\n\t\t * Collection of the child views, detached from the DOM\n\t\t * structure of the editor, like panels, icons etc.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:ui/viewcollection~ViewCollection} #body\n\t\t */\n\t\tthis.body = this.createCollection();\n\n\t\t/**\n\t\t * The element holding elements of the 'body' region.\n\t\t *\n\t\t * @private\n\t\t * @member {HTMLElement} #_bodyCollectionContainer\n\t\t */\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\treturn Promise.resolve()\n\t\t\t.then( () => this._renderBodyCollection() )\n\t\t\t.then( () => super.init() );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tdestroy() {\n\t\tthis._bodyCollectionContainer.remove();\n\n\t\treturn super.destroy();\n\t}\n\n\t/**\n\t * Creates and appends to `<body>` the {@link #body} collection container.\n\t *\n\t * @private\n\t */\n\t_renderBodyCollection() {\n\t\tconst bodyElement = this._bodyCollectionContainer = new Template( {\n\t\t\ttag: 'div',\n\t\t\tattributes: {\n\t\t\t\tclass: [\n\t\t\t\t\t'ck-body',\n\t\t\t\t\t'ck-rounded-corners',\n\t\t\t\t\t'ck-reset_all'\n\t\t\t\t]\n\t\t\t},\n\t\t\tchildren: this.body\n\t\t} ).render();\n\n\t\tdocument.body.appendChild( bodyElement );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-ui/src/editorui/editoruiview.js\n// module id = 373\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/* global DOMParser */\n\n/**\n * @module ui/icon/iconview\n */\n\nimport View from '../view';\nimport Template from '../template';\n\n/**\n * The icon view class.\n *\n * @extends module:ui/view~View\n */\nexport default class IconView extends View {\n\t/**\n\t * @inheritDoc\n\t */\n\tconstructor() {\n\t\tsuper();\n\n\t\tconst bind = this.bindTemplate;\n\n\t\t/**\n\t\t * The SVG source of the icon.\n\t\t *\n\t\t * @observable\n\t\t * @member {String} #content\n\t\t */\n\t\tthis.set( 'content' );\n\n\t\t/**\n\t\t * This attribute specifies the boundaries to which the\n\t\t * icon content should stretch.\n\t\t *\n\t\t * @observable\n\t\t * @default '0 0 20 20'\n\t\t * @member {String} #viewBox\n\t\t */\n\t\tthis.set( 'viewBox', '0 0 20 20' );\n\n\t\tthis.template = new Template( {\n\t\t\ttag: 'svg',\n\t\t\tns: 'http://www.w3.org/2000/svg',\n\t\t\tattributes: {\n\t\t\t\tclass: 'ck-icon',\n\t\t\t\tviewBox: bind.to( 'viewBox' )\n\t\t\t}\n\t\t} );\n\n\t\t// This is a hack for lack of innerHTML binding.\n\t\t// See: https://github.com/ckeditor/ckeditor5-ui/issues/99.\n\t\tthis.on( 'change:content', ( evt, name, value ) => {\n\t\t\tconst svg = new DOMParser()\n\t\t\t\t.parseFromString( value.trim(), 'image/svg+xml' )\n\t\t\t\t.firstChild;\n\n\t\t\twhile ( svg.childNodes.length > 0 ) {\n\t\t\t\tthis.element.appendChild( svg.childNodes[ 0 ] );\n\t\t\t}\n\t\t} );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-ui/src/icon/iconview.js\n// module id = 374\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/label/labelview\n */\n\nimport View from '../view';\nimport Template from '../template';\n\n/**\n * The label view class.\n *\n * @extends module:ui/view~View\n */\nexport default class LabelView extends View {\n\t/**\n\t * @inheritDoc\n\t */\n\tconstructor( locale ) {\n\t\tsuper( locale );\n\n\t\t/**\n\t\t * The text of the label.\n\t\t *\n\t\t * @observable\n\t\t * @member {String} #text\n\t\t */\n\t\tthis.set( 'text' );\n\n\t\t/**\n\t\t * The `for` attribute of the label (i.e. to pair with an `<input>` element).\n\t\t *\n\t\t * @observable\n\t\t * @member {String} #for\n\t\t */\n\t\tthis.set( 'for' );\n\n\t\tconst bind = this.bindTemplate;\n\n\t\tthis.template = new Template( {\n\t\t\ttag: 'label',\n\t\t\tattributes: {\n\t\t\t\tclass: [\n\t\t\t\t\t'ck-label'\n\t\t\t\t],\n\t\t\t\tfor: bind.to( 'for' )\n\t\t\t},\n\t\t\tchildren: [\n\t\t\t\t{\n\t\t\t\t\ttext: bind.to( 'text' )\n\t\t\t\t}\n\t\t\t]\n\t\t} );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-ui/src/label/labelview.js\n// module id = 375\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/list/listitemview\n */\n\nimport View from '../view';\nimport Template from '../template';\n\n/**\n * The list item view class.\n *\n * @extends module:ui/view~View\n */\nexport default class ListItemView extends View {\n\t/**\n\t * @inheritDoc\n\t */\n\tconstructor() {\n\t\tsuper();\n\n\t\t/**\n\t\t * Controls the `tabindex` attribute of the item.\n\t\t *\n\t\t * @observable\n\t\t * @default -1\n\t\t * @member {String} #tabindex\n\t\t */\n\t\tthis.set( 'tabindex', -1 );\n\n\t\tconst bind = this.bindTemplate;\n\n\t\tthis.template = new Template( {\n\t\t\ttag: 'li',\n\n\t\t\tattributes: {\n\t\t\t\tclass: [\n\t\t\t\t\t'ck-list__item',\n\t\t\t\t\tbind.to( 'class' ),\n\t\t\t\t\tbind.if( 'isActive', 'ck-list__item_active' )\n\t\t\t\t],\n\t\t\t\tstyle: bind.to( 'style' ),\n\t\t\t\ttabindex: bind.to( 'tabindex' )\n\t\t\t},\n\n\t\t\tchildren: [\n\t\t\t\t{\n\t\t\t\t\ttext: bind.to( 'label' )\n\t\t\t\t}\n\t\t\t],\n\n\t\t\ton: {\n\t\t\t\tclick: bind.to( 'execute' )\n\t\t\t}\n\t\t} );\n\n\t\t/**\n\t\t * The label of the list item.\n\t\t *\n\t\t * @observable\n\t\t * @member {String} #label\n\t\t */\n\n\t\t/**\n\t\t * (Optional) The DOM style attribute of the list item.\n\t\t *\n\t\t * @observable\n\t\t * @member {String} #style\n\t\t */\n\n\t\t/**\n\t\t * (Optional) The additional class set on the {@link #element}.\n\t\t *\n\t\t * @observable\n\t\t * @member {String} #class\n\t\t */\n\n\t\t/**\n\t\t * (Optional) When set, it marks the item as active among the others.\n\t\t *\n\t\t * @observable\n\t\t * @member {Boolean} #isActive\n\t\t */\n\n\t\t/**\n\t\t * Fired when the list item has been clicked.\n\t\t *\n\t\t * @event #execute\n\t\t */\n\t}\n\n\t/**\n\t * Focuses the list item.\n\t */\n\tfocus() {\n\t\tthis.element.focus();\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-ui/src/list/listitemview.js\n// module id = 376\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/list/listview\n */\n\nimport View from '../view';\nimport Template from '../template';\nimport FocusTracker from '@ckeditor/ckeditor5-utils/src/focustracker';\nimport FocusCycler from '../focuscycler';\nimport KeystrokeHandler from '@ckeditor/ckeditor5-utils/src/keystrokehandler';\n\n/**\n * The list view class.\n *\n * @extends module:ui/view~View\n */\nexport default class ListView extends View {\n\t/**\n\t * @inheritDoc\n\t */\n\tconstructor() {\n\t\tsuper();\n\n\t\t/**\n\t\t * Collection of the child list views.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:ui/viewcollection~ViewCollection}\n\t\t */\n\t\tthis.items = this.createCollection();\n\n\t\t/**\n\t\t * Tracks information about DOM focus in the list.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:utils/focustracker~FocusTracker}\n\t\t */\n\t\tthis.focusTracker = new FocusTracker();\n\n\t\t/**\n\t\t * Instance of the {@link module:utils/keystrokehandler~KeystrokeHandler}.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:utils/keystrokehandler~KeystrokeHandler}\n\t\t */\n\t\tthis.keystrokes = new KeystrokeHandler();\n\n\t\t/**\n\t\t * Helps cycling over focusable {@link #items} in the list.\n\t\t *\n\t\t * @readonly\n\t\t * @protected\n\t\t * @member {module:ui/focuscycler~FocusCycler}\n\t\t */\n\t\tthis._focusCycler = new FocusCycler( {\n\t\t\tfocusables: this.items,\n\t\t\tfocusTracker: this.focusTracker,\n\t\t\tkeystrokeHandler: this.keystrokes,\n\t\t\tactions: {\n\t\t\t\t// Navigate list items backwards using the arrowup key.\n\t\t\t\tfocusPrevious: 'arrowup',\n\n\t\t\t\t// Navigate toolbar items forwards using the arrowdown key.\n\t\t\t\tfocusNext: 'arrowdown',\n\t\t\t}\n\t\t} );\n\n\t\tthis.template = new Template( {\n\t\t\ttag: 'ul',\n\n\t\t\tattributes: {\n\t\t\t\tclass: [\n\t\t\t\t\t'ck-reset',\n\t\t\t\t\t'ck-list'\n\t\t\t\t]\n\t\t\t},\n\n\t\t\tchildren: this.items\n\t\t} );\n\n\t\tthis.items.on( 'add', ( evt, item ) => {\n\t\t\tthis.focusTracker.add( item.element );\n\t\t} );\n\n\t\tthis.items.on( 'remove', ( evt, item ) => {\n\t\t\tthis.focusTracker.remove( item.element );\n\t\t} );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\t// Start listening for the keystrokes coming from #element.\n\t\tthis.keystrokes.listenTo( this.element );\n\n\t\treturn super.init();\n\t}\n\n\t/**\n\t * Focuses the first focusable in {@link #items}.\n\t */\n\tfocus() {\n\t\tthis._focusCycler.focusFirst();\n\t}\n\n\t/**\n\t * Focuses the last focusable in {@link #items}.\n\t */\n\tfocusLast() {\n\t\tthis._focusCycler.focusLast();\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-ui/src/list/listview.js\n// module id = 377\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/model\n */\n\nimport extend from '@ckeditor/ckeditor5-utils/src/lib/lodash/extend';\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\nimport ObservableMixin from '@ckeditor/ckeditor5-utils/src/observablemixin';\n\n/**\n * The base MVC model class.\n *\n * @mixes module:utils/observablemixin~ObservableMixin\n */\nexport default class Model {\n\t/**\n\t * Creates a new Model instance.\n\t *\n\t * @param {Object} [attributes] The model state attributes to be defined during the instance creation.\n\t * @param {Object} [properties] The (out of state) properties to be appended to the instance during creation.\n\t */\n\tconstructor( attributes, properties ) {\n\t\t// Extend this instance with the additional (out of state) properties.\n\t\tif ( properties ) {\n\t\t\textend( this, properties );\n\t\t}\n\n\t\t// Initialize the attributes.\n\t\tif ( attributes ) {\n\t\t\tthis.set( attributes );\n\t\t}\n\t}\n}\n\nmix( Model, ObservableMixin );\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-ui/src/model.js\n// module id = 378\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/toolbar/enabletoolbarkeyboardfocus\n */\n\n/**\n * Enables focus/blur toolbar navigation using `Alt+F10` and `Esc` keystrokes.\n *\n * @param {Object} options Options of the utility.\n * @param {*} options.origin A view to which the focus will return when `Esc` is pressed and\n * `options.toolbar` is focused.\n * @param {module:utils/keystrokehandler~KeystrokeHandler} options.originKeystrokeHandler A keystroke\n * handler to register `Alt+F10` keystroke.\n * @param {module:utils/focustracker~FocusTracker} options.originFocusTracker A focus tracker\n * for `options.origin`.\n * @param {module:ui/toolbar/toolbarview~ToolbarView} options.toolbar A toolbar which is to gain\n * focus when `Alt+F10` is pressed.\n */\nexport default function enableToolbarKeyboardFocus( {\n\torigin,\n\toriginKeystrokeHandler,\n\toriginFocusTracker,\n\ttoolbar\n} ) {\n\t// Because toolbar items can get focus, the overall state of the toolbar must\n\t// also be tracked.\n\toriginFocusTracker.add( toolbar.element );\n\n\t// Focus the toolbar on the keystroke, if not already focused.\n\toriginKeystrokeHandler.set( 'Alt+F10', ( data, cancel ) => {\n\t\tif ( originFocusTracker.isFocused && !toolbar.focusTracker.isFocused ) {\n\t\t\ttoolbar.focus();\n\t\t\tcancel();\n\t\t}\n\t} );\n\n\t// Blur the toolbar and bring the focus back to origin.\n\ttoolbar.keystrokes.set( 'Esc', ( data, cancel ) => {\n\t\tif ( toolbar.focusTracker.isFocused ) {\n\t\t\torigin.focus();\n\t\t\tcancel();\n\t\t}\n\t} );\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-ui/src/toolbar/enabletoolbarkeyboardfocus.js\n// module id = 379\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/toolbar/sticky/stickytoolbarview\n */\n\nimport global from '@ckeditor/ckeditor5-utils/src/dom/global';\nimport Template from '../../template';\nimport ToolbarView from '../toolbarview';\nimport toUnit from '@ckeditor/ckeditor5-utils/src/dom/tounit';\n\nconst toPx = toUnit( 'px' );\n\n/**\n * The sticky toolbar view class.\n *\n * @extends module:ui/toolbar/toolbarview~ToolbarView\n */\nexport default class StickyToolbarView extends ToolbarView {\n\t/**\n\t * @inheritDoc\n\t */\n\tconstructor( locale ) {\n\t\tsuper( locale );\n\n\t\tconst bind = this.bindTemplate;\n\n\t\t/**\n\t\t * Controls whether the sticky toolbar should be active. When any editable\n\t\t * is focused in the editor, toolbar becomes active.\n\t\t *\n\t\t * @readonly\n\t\t * @observable\n\t\t * @member {Boolean} #isActive\n\t\t */\n\t\tthis.set( 'isActive', false );\n\n\t\t/**\n\t\t * Controls whether the sticky toolbar is in the \"sticky\" state.\n\t\t *\n\t\t * @readonly\n\t\t * @observable\n\t\t * @member {Boolean} #isSticky\n\t\t */\n\t\tthis.set( 'isSticky', false );\n\n\t\t/**\n\t\t * The limiter element for the sticky toolbar instance. Its bounding rect limits\n\t\t * the \"stickyness\" of the toolbar, i.e. when the toolbar reaches the bottom\n\t\t * edge of the limiter, it becomes sticky to that edge and does not float\n\t\t * off the limiter. It is mandatory for the toolbar to work properly and once\n\t\t * set, it cannot be changed.\n\t\t *\n\t\t * @readonly\n\t\t * @observable\n\t\t * @member {HTMLElement} #limiterElement\n\t\t */\n\t\tthis.set( 'limiterElement', null );\n\n\t\t/**\n\t\t * The offset from the bottom edge of {@link #limiterElement}\n\t\t * which stops the toolbar from stickying any further to prevent limiter's content\n\t\t * from being completely covered.\n\t\t *\n\t\t * @readonly\n\t\t * @observable\n\t\t * @default 50\n\t\t * @member {Number} #limiterOffset\n\t\t */\n\t\tthis.set( 'limiterOffset', 50 );\n\n\t\t/**\n\t\t * Controls the `margin-left` CSS style of the toolbar.\n\t\t *\n\t\t * @protected\n\t\t * @readonly\n\t\t * @observable\n\t\t * @member {String} #_marginLeft\n\t\t */\n\t\tthis.set( '_marginLeft', null );\n\n\t\t/**\n\t\t * Set `true` if the sticky toolbar reached the bottom edge of the\n\t\t * {@link #limiterElement}.\n\t\t *\n\t\t * @protected\n\t\t * @readonly\n\t\t * @observable\n\t\t * @member {Boolean} #_isStickyToTheLimiter\n\t\t */\n\t\tthis.set( '_isStickyToTheLimiter', false );\n\n\t\t/**\n\t\t * The DOM bounding client rect of the {@link module:ui/view~View#element} of the toolbar.\n\t\t *\n\t\t * @protected\n\t\t * @member {Object} #_toolbarRect\n\t\t */\n\n\t\t/**\n\t\t * The DOM bounding client rect of the {@link #limiterElement}\n\t\t * of the toolbar.\n\t\t *\n\t\t * @protected\n\t\t * @member {Object} #_limiterRect\n\t\t */\n\n\t\tTemplate.extend( this.template, {\n\t\t\tattributes: {\n\t\t\t\tclass: [\n\t\t\t\t\t// Toggle class of the toolbar when \"sticky\" state changes in the view.\n\t\t\t\t\tbind.if( 'isSticky', 'ck-toolbar_sticky' ),\n\t\t\t\t\tbind.if( '_isStickyToTheLimiter', 'ck-toolbar_sticky_bottom-limit' ),\n\t\t\t\t],\n\t\t\t\tstyle: {\n\t\t\t\t\twidth: bind.to( 'isSticky', ( isSticky ) => {\n\t\t\t\t\t\treturn isSticky ? toPx( this._elementPlaceholder.getBoundingClientRect().width ) : null;\n\t\t\t\t\t} ),\n\n\t\t\t\t\tbottom: bind.to( '_isStickyToTheLimiter', ( _isStickyToTheLimiter ) => {\n\t\t\t\t\t\treturn _isStickyToTheLimiter ? toPx( this.limiterOffset ) : null;\n\t\t\t\t\t} ),\n\n\t\t\t\t\tmarginLeft: bind.to( '_marginLeft' )\n\t\t\t\t}\n\t\t\t}\n\t\t} );\n\n\t\t/**\n\t\t * A dummy element which visually fills the space as long as the\n\t\t * actual toolbar is sticky. It prevents flickering of the UI.\n\t\t *\n\t\t * @private\n\t\t * @property {HTMLElement}\n\t\t */\n\t\tthis._elementPlaceholder = new Template( {\n\t\t\ttag: 'div',\n\t\t\tattributes: {\n\t\t\t\tclass: [\n\t\t\t\t\t'ck-toolbar__placeholder'\n\t\t\t\t],\n\t\t\t\tstyle: {\n\t\t\t\t\tdisplay: bind.to( 'isSticky', isSticky => isSticky ? 'block' : 'none' ),\n\t\t\t\t\theight: bind.to( 'isSticky', ( isSticky ) => {\n\t\t\t\t\t\treturn isSticky ? toPx( this._toolbarRect.height ) : null;\n\t\t\t\t\t} )\n\t\t\t\t}\n\t\t\t}\n\t\t} ).render();\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tsuper.init();\n\n\t\tthis.element.parentNode.insertBefore( this._elementPlaceholder, this.element );\n\n\t\t// Update sticky state of the toolbar as the window is being scrolled.\n\t\tthis.listenTo( global.window, 'scroll', () => {\n\t\t\tthis._checkIfShouldBeSticky();\n\t\t} );\n\n\t\t// Synchronize with `model.isActive` because sticking an inactive toolbar is pointless.\n\t\tthis.listenTo( this, 'change:isActive', () => {\n\t\t\tthis._checkIfShouldBeSticky();\n\t\t} );\n\t}\n\n\t/**\n\t * Destroys the toolbar and removes the {@link #_elementPlaceholder}.\n\t */\n\tdestroy() {\n\t\treturn super.destroy().then( () => {\n\t\t\tthis._elementPlaceholder.remove();\n\t\t} );\n\t}\n\n\t/**\n\t * Analyzes the environment to decide whether the toolbar should\n\t * be sticky or not.\n\t *\n\t * @protected\n\t */\n\t_checkIfShouldBeSticky() {\n\t\tconst limiterRect = this._limiterRect = this.limiterElement.getBoundingClientRect();\n\t\tconst toolbarRect = this._toolbarRect = this.element.getBoundingClientRect();\n\n\t\t// The toolbar must be active to become sticky.\n\t\tthis.isSticky = this.isActive &&\n\t\t\t// The limiter's top edge must be beyond the upper edge of the visible viewport.\n\t\t\tlimiterRect.top < 0 &&\n\t\t\t// The model#limiterElement's height mustn't be smaller than the toolbar's height and model#limiterOffset.\n\t\t\t// There's no point in entering the sticky mode if the model#limiterElement is very, very small, because\n\t\t\t// it would immediately set model#_isStickyToTheLimiter true and, given model#limiterOffset, the toolbar\n\t\t\t// would be positioned before the model#limiterElement.\n\t\t\tthis._toolbarRect.height + this.limiterOffset < limiterRect.height;\n\n\t\t// Stick the toolbar to the top edge of the viewport simulating CSS position:sticky.\n\t\t// TODO: Possibly replaced by CSS in the future http://caniuse.com/#feat=css-sticky\n\t\tif ( this.isSticky ) {\n\t\t\tthis._isStickyToTheLimiter = limiterRect.bottom < toolbarRect.height + this.limiterOffset;\n\t\t\tthis._marginLeft = this._isStickyToTheLimiter ? null : toPx( -global.window.scrollX );\n\t\t}\n\t\t// Detach the toolbar from the top edge of the viewport.\n\t\telse {\n\t\t\tthis._isStickyToTheLimiter = false;\n\t\t\tthis._marginLeft = null;\n\t\t}\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-ui/src/toolbar/sticky/stickytoolbarview.js\n// module id = 380\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/toolbar/toolbarseparatorview\n */\n\nimport View from '../view';\nimport Template from '../template';\n\n/**\n * The toolbar separator view class.\n *\n * @extends module:ui/view~View\n */\nexport default class ToolbarSeparatorView extends View {\n\t/**\n\t * @inheritDoc\n\t */\n\tconstructor( locale ) {\n\t\tsuper( locale );\n\n\t\tthis.template = new Template( {\n\t\t\ttag: 'span',\n\t\t\tattributes: {\n\t\t\t\tclass: [\n\t\t\t\t\t'ck-toolbar__separator'\n\t\t\t\t]\n\t\t\t}\n\t\t} );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-ui/src/toolbar/toolbarseparatorview.js\n// module id = 381\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module undo/redocommand\n */\n\nimport BaseCommand from './basecommand';\nimport { transformDeltaSets } from '@ckeditor/ckeditor5-engine/src/model/delta/transform';\n\n/**\n * The redo command stores {@link module:engine/model/batch~Batch batches} that were used to undo a batch by\n * {@link module:undo/undocommand~UndoCommand}. It is able to redo a previously undone batch by reversing the undoing\n * batches created by `UndoCommand`. The reversed batch is also transformed by batches from\n * {@link module:engine/model/document~Document#history history} that happened after it and are not other redo batches.\n *\n * The redo command also takes care of restoring the {@link module:engine/model/document~Document#selection document selection}\n * to the state before an undone batch was applied.\n *\n * @extends module:undo/basecommand~BaseCommand\n */\nexport default class RedoCommand extends BaseCommand {\n\t/**\n\t * Executes the command. This method reverts the last {@link module:engine/model/batch~Batch batch} added to\n\t * the command's stack, applies the reverted and transformed version on the\n\t * {@link module:engine/model/document~Document document} and removes the batch from the stack.\n\t * Then, it restores the {@link module:engine/model/document~Document#selection document selection}.\n\t *\n\t * @protected\n\t */\n\t_doExecute() {\n\t\tconst item = this._stack.pop();\n\n\t\t// All changes have to be done in one `enqueueChanges` callback so other listeners will not\n\t\t// step between consecutive deltas, or won't do changes to the document before selection is properly restored.\n\t\tthis.editor.document.enqueueChanges( () => {\n\t\t\tconst lastDelta = item.batch.deltas[ item.batch.deltas.length - 1 ];\n\t\t\tconst nextBaseVersion = lastDelta.baseVersion + lastDelta.operations.length;\n\n\t\t\t// Selection state is from the moment after undo happened. It needs to be transformed by all the deltas\n\t\t\t// that happened after the selection state got saved. Unfortunately it is tricky, because those deltas\n\t\t\t// are already compressed in the history (they are removed).\n\t\t\t// Because of that we will transform the selection only by non-redo deltas\n\t\t\tconst deltas = Array.from( this.editor.document.history.getDeltas( nextBaseVersion ) ).filter( ( delta ) => {\n\t\t\t\treturn !this._createdBatches.has( delta.batch );\n\t\t\t} );\n\n\t\t\tthis._restoreSelection( item.selection.ranges, item.selection.isBackward, deltas );\n\t\t\tthis._redo( item.batch );\n\t\t} );\n\n\t\tthis.refreshState();\n\t}\n\n\t/**\n\t * Redoes a batch by reversing the batch that has undone it, transforming that batch and applying it. This is\n\t * a helper method for {@link #_doExecute}.\n\t *\n\t * @private\n\t * @param {module:engine/model/batch~Batch} storedBatch The batch whose deltas will be reversed, transformed and applied.\n\t */\n\t_redo( storedBatch ) {\n\t\tconst document = this.editor.document;\n\n\t\t// All changes done by the command execution will be saved as one batch.\n\t\tconst redoingBatch = document.batch();\n\t\tthis._createdBatches.add( redoingBatch );\n\n\t\tconst deltasToRedo = storedBatch.deltas.slice();\n\t\tdeltasToRedo.reverse();\n\n\t\t// We will process each delta from `storedBatch`, in reverse order. If there was deltas A, B and C in stored batch,\n\t\t// we need to revert them in reverse order, so first reverse C, then B, then A.\n\t\tfor ( let deltaToRedo of deltasToRedo ) {\n\t\t\t// Keep in mind that all algorithms return arrays. That's because the transformation might result in multiple\n\t\t\t// deltas, so we need arrays to handle them anyway. To simplify algorithms, it is better to always have arrays\n\t\t\t// in mind. For simplicity reasons, we will use singular form in descriptions and names.\n\n\t\t\tconst nextBaseVersion = deltaToRedo.baseVersion + deltaToRedo.operations.length;\n\n\t\t\t// As stated above, convert delta to array of deltas.\n\t\t\tlet reversedDelta = [ deltaToRedo.getReversed() ];\n\n\t\t\t// 1. Transform that delta by deltas from history that happened after it.\n\t\t\t// Omit deltas from \"redo\" batches, because reversed delta already bases on them. Transforming by them\n\t\t\t// again will result in incorrect deltas.\n\t\t\tfor ( let historyDelta of document.history.getDeltas( nextBaseVersion ) ) {\n\t\t\t\tif ( !this._createdBatches.has( historyDelta.batch ) ) {\n\t\t\t\t\treversedDelta = transformDeltaSets( reversedDelta, [ historyDelta ], true ).deltasA;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// 2. After reversed delta has been transformed by all history deltas, apply it.\n\t\t\tfor ( let delta of reversedDelta ) {\n\t\t\t\t// Fix base version.\n\t\t\t\tdelta.baseVersion = document.version;\n\n\t\t\t\t// Before applying, add the delta to the `redoingBatch`.\n\t\t\t\tredoingBatch.addDelta( delta );\n\n\t\t\t\t// Now, apply all operations of the delta.\n\t\t\t\tfor ( let operation of delta.operations ) {\n\t\t\t\t\tdocument.applyOperation( operation );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-undo/src/redocommand.js\n// module id = 382\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module undo/undo\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport UndoEngine from './undoengine';\nimport ButtonView from '@ckeditor/ckeditor5-ui/src/button/buttonview';\n\nimport undoIcon from '../theme/icons/undo.svg';\nimport redoIcon from '../theme/icons/redo.svg';\n\n/**\n * The undo feature. It introduces the Undo and Redo buttons to the editor.\n *\n * Below is the explanation of the undo mechanism working together with {@link module:engine/model/history~History History}:\n *\n * Whenever a {@link module:engine/model/delta/delta~Delta delta} is applied to the\n * {@link module:engine/model/document~Document document}, it is saved to `History` as is.\n * The {@link module:engine/model/batch~Batch batch} that owns that delta is also saved, in\n * {@link module:undo/undocommand~UndoCommand}, together with the selection that was present in the document before the\n * delta was applied. A batch is saved instead of the delta because changes are undone batch-by-batch, not delta-by-delta\n * and a batch is seen as one undo step.\n *\n * After some changes happen to the document, the `History` and `UndoCommand` stack can be represented as follows:\n *\n *\t\t  History                           Undo stack\n *\t\t===========             ==================================\n *\t\t[delta A1]              [batch A with selection before A1]\n *\t\t[delta B1]              [batch B with selection before B1]\n *\t\t[delta B2]              [batch C with selection before C1]\n *\t\t[delta C1]\n *\t\t[delta C2]\n *\t\t[delta B3]\n *\t\t[delta C3]\n *\n * Where deltas starting with the same letter are from same batch.\n *\n * Undoing a batch means that a set of deltas which will reverse the effects of that batch needs to be generated. For example, if a batch\n * added several letters, undoing the batch should remove them. It is important to apply undoing deltas in the reversed order,\n * so if a batch has delta `X`, `Y`, `Z`, reversed deltas `Zr`, `Yr` and `Xr` need to be applied. Otherwise reversed delta\n * `Xr` would operate on a wrong document state, because delta `X` does not know that deltas `Y` and `Z` happened.\n *\n * After deltas from an undone batch got {@link module:engine/model/delta/delta~Delta#getReversed reversed},\n * one needs to make sure if they are ready to be applied. In the scenario above, delta `C3` is the last delta and `C3r`\n * bases on up-to-date document state, so it can be applied to the document.\n *\n *\t\t  History                           Undo stack\n *\t\t===========             ==================================\n *\t\t[delta A1 ]             [batch A with selection before A1]\n *\t\t[delta B1 ]             [batch B with selection before B1]\n *\t\t[delta B2 ]             [   processing undoing batch C   ]\n *\t\t[delta C1 ]\n *\t\t[delta C2 ]\n *\t\t[delta B3 ]\n *\t\t[delta C3 ]\n *\t\t[delta C3r]\n *\n * Next is delta `C2`, reversed to `C2r`. `C2r` bases on `C2`, so it bases on the wrong document state. It needs to be\n * transformed by deltas from history that happened after it, so it \"knows\" about them. Let us assume that `C2' = C2r * B3 * C3 * C3r`,\n * where `*` means \"transformed by\". As can be seen, `C2r` is transformed by a delta which is undone afterwards anyway.\n * This brings two problems: lower effectiveness (obvious) and incorrect results. Bad results come from the fact that\n * operational transformation algorithms assume there is no connection between two transformed operations when resolving\n * conflicts, which is true for example for collaborative editing, but is not true for the undo algorithm.\n *\n * To prevent both problems, `History` introduces an API to {@link module:engine/model/history~History#removeDelta remove}\n * deltas from history. It is used to remove undone and undoing deltas after they are applied. It feels right &mdash; since when a\n * delta is undone or reversed, it is \"removed\" and there should be no sign of it in the history (fig. 1).\n *\n * Notes:\n *\n * * `---` symbolizes a removed delta.\n * * `'` symbolizes a reversed delta that was later transformed.\n *\n *\t\tHistory (fig. 1)            History (fig. 2)            History (fig. 3)\n *\t\t================            ================            ================\n *\t\t   [delta A1]                  [delta A1]                  [delta A1]\n *\t\t   [delta B1]                  [delta B1]                  [delta B1]\n *\t\t   [delta B2]                  [delta B2]                  [delta B2]\n *\t\t   [delta C1]                  [delta C1]                  [---C1---]\n *\t\t   [delta C2]                  [---C2---]                  [---C2---]\n *\t\t   [delta B3]                  [delta B3]                  [delta B3]\n *\t\t   [---C3---]                  [---C3---]                  [---C3---]\n *\t\t   [---C3r--]                  [---C3r--]                  [---C3r--]\n *\t\t                               [---C2'--]                  [---C2'--]\n *\t\t                                                           [---C1'--]\n *\n * `C2r` can now be transformed only by `B3` and both `C2'` and `C2` can be removed (fig. 2). Same with `C1` (fig. 3).\n *\n * But what about that selection? For batch `C`, undo feature remembers the selection just before `C1` was applied. It can be\n * visualized between delta `B2` and `B3` (see fig. 3). As can be seen, some operations were applied to the document since the selection\n * state was remembered. Setting the document selection as it was remembered would be incorrect. It feels natural that\n * the selection state should also be transformed by deltas from history. The same pattern applies as with transforming deltas &mdash;\n * ranges should not be transformed by undone and undoing deltas. Thankfully, those deltas are already removed from history.\n *\n * Unfortunately, a problem appears with delta `B3`. It still remembers the context of deltas `C2` and `C1` on which it bases.\n * It is an obvious error &mdash; transforming by that delta would lead to incorrect results or \"repeating\" history would\n * produce a different document than the actual one.\n *\n * To prevent this situation, `B3` needs to also be {@link module:engine/model/history~History#updateDelta updated} in history.\n * It should be kept in a state that \"does not remember\" deltas that were removed from history. It is easily\n * achieved while transforming the reversed delta. For example, when `C2r` is transformed by `B3`, at the same time `B3` is\n * transformed by `C2r`. Transforming `B3` that remembers `C2` by a delta reversing `C2` effectively makes `B3` \"forget\" about `C2`.\n * By doing these transformations you effectively make `B3` base on `B2` which is the correct state of history (fig. 4).\n *\n *\t\t     History (fig. 4)                         History (fig. 5)\n *\t\t===========================            ===============================\n *\t\t        [delta A1]                               [---A1---]\n *\t\t        [delta B1]                         [delta B1 \"without A1\"]\n *\t\t        [delta B2]                         [delta B2 \"without A1\"]\n *\t\t        [---C1---]                               [---C1---]\n *\t\t        [---C2---]                               [---C2---]\n *\t\t[delta B3 \"without C2, C1\"]            [delta B3 \"without C2, C1, A1\"]\n *\t\t        [---C3---]                               [---C3---]\n *\t\t        [---C3r--]                               [---C3r--]\n *\t\t        [---C2'--]                               [---C2'--]\n *\t\t        [---C1'--]                               [---C1'--]\n *\t\t                                                 [---A1'--]\n *\n * Selective undo works on the same basis, however, instead of undoing the last batch in the undo stack, any batch can be undone.\n * The same algorithm applies: deltas from a batch (i.e. `A1`) are reversed and then transformed by deltas stored in history,\n * simultaneously updating them. Then deltas are applied to the document and removed from history (fig. 5).\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class Undo extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get requires() {\n\t\treturn [ UndoEngine ];\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get pluginName() {\n\t\treturn 'undo/undo';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tconst editor = this.editor;\n\t\tconst t = editor.t;\n\n\t\tthis._addButton( 'undo', t( 'Undo' ), 'CTRL+Z', undoIcon );\n\t\tthis._addButton( 'redo', t( 'Redo' ), 'CTRL+Y', redoIcon );\n\n\t\teditor.keystrokes.set( 'CTRL+Z', 'undo' );\n\t\teditor.keystrokes.set( 'CTRL+Y', 'redo' );\n\t\teditor.keystrokes.set( 'CTRL+SHIFT+Z', 'redo' );\n\t}\n\n\t/**\n\t * Creates a button for the specified command.\n\t *\n\t * @private\n\t * @param {String} name Command name.\n\t * @param {String} label Button label.\n\t * @param {String} keystroke Command keystroke.\n\t * @param {String} Icon Source of the icon.\n\t */\n\t_addButton( name, label, keystroke, Icon ) {\n\t\tconst editor = this.editor;\n\t\tconst command = editor.commands.get( name );\n\n\t\teditor.ui.componentFactory.add( name, ( locale ) => {\n\t\t\tconst view = new ButtonView( locale );\n\n\t\t\tview.set( {\n\t\t\t\tlabel: label,\n\t\t\t\ticon: Icon,\n\t\t\t\tkeystroke,\n\t\t\t\ttooltip: true\n\t\t\t} );\n\n\t\t\tview.bind( 'isEnabled' ).to( command, 'isEnabled' );\n\n\t\t\tthis.listenTo( view, 'execute', () => editor.execute( name ) );\n\n\t\t\treturn view;\n\t\t} );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-undo/src/undo.js\n// module id = 383\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module undo/undocommand\n */\n\nimport BaseCommand from './basecommand';\nimport { transformRangesByDeltas } from './basecommand';\nimport { transformDeltaSets } from '@ckeditor/ckeditor5-engine/src/model/delta/transform';\n\n/**\n * The undo command stores {@link module:engine/model/batch~Batch batches} applied to the\n * {@link module:engine/model/document~Document document} and is able to undo a batch by reversing it and transforming by\n * other batches from {@link module:engine/model/document~Document#history history} that happened after the reversed batch.\n *\n * The undo command also takes care of restoring the {@link module:engine/model/document~Document#selection document selection}\n * to the state before the undone batch was applied.\n *\n * @extends module:undo/basecommand~BaseCommand\n */\nexport default class UndoCommand extends BaseCommand {\n\t/**\n\t * Executes the command. This method reverts a {@link module:engine/model/batch~Batch batch} added to the command's stack, transforms\n\t * and applies the reverted version on the {@link module:engine/model/document~Document document} and removes the batch from the stack.\n\t * Then, it restores the {@link module:engine/model/document~Document#selection document selection}.\n\t *\n\t * @protected\n\t * @fires revert\n\t * @param {module:engine/model/batch~Batch} [batch] A batch that should be undone. If not set, the last added batch will be undone.\n\t */\n\t_doExecute( batch = null ) {\n\t\t// If batch is not given, set `batchIndex` to the last index in command stack.\n\t\tlet batchIndex = batch ? this._stack.findIndex( ( a ) => a.batch == batch ) : this._stack.length - 1;\n\n\t\tconst item = this._stack.splice( batchIndex, 1 )[ 0 ];\n\n\t\t// All changes has to be done in one `enqueueChanges` callback so other listeners will not\n\t\t// step between consecutive deltas, or won't do changes to the document before selection is properly restored.\n\t\tthis.editor.document.enqueueChanges( () => {\n\t\t\tconst undoingBatch = this._undo( item.batch );\n\n\t\t\tconst deltas = this.editor.document.history.getDeltas( item.batch.baseVersion );\n\t\t\tthis._restoreSelection( item.selection.ranges, item.selection.isBackward, deltas );\n\n\t\t\tthis.fire( 'revert', item.batch, undoingBatch );\n\t\t} );\n\n\t\tthis.refreshState();\n\t}\n\n\t/**\n\t * Returns an index in {@link module:undo/basecommand~BaseCommand#_stack} pointing to the item that is storing a\n\t * batch that has a given {@link module:engine/model/batch~Batch#baseVersion}.\n\t *\n\t * @private\n\t * @param {Number} baseVersion The base version of the batch to find.\n\t * @returns {Number|null}\n\t */\n\t_getItemIndexFromBaseVersion( baseVersion ) {\n\t\tfor ( let i = 0; i < this._stack.length; i++ ) {\n\t\t\tif ( this._stack[ i ].batch.baseVersion == baseVersion ) {\n\t\t\t\treturn i;\n\t\t\t}\n\t\t}\n\n\t\treturn null;\n\t}\n\n\t/**\n\t * Undoes a batch by reversing a batch from history, transforming that reversed batch and applying it. This is\n\t * a helper method for {@link #_doExecute}.\n\t *\n\t * @private\n\t * @param {module:engine/model/batch~Batch} batchToUndo A batch whose deltas will be reversed, transformed and applied.\n\t */\n\t_undo( batchToUndo ) {\n\t\tconst document = this.editor.document;\n\n\t\t// All changes done by the command execution will be saved as one batch.\n\t\tconst undoingBatch = document.batch();\n\t\tthis._createdBatches.add( undoingBatch );\n\n\t\tconst history = document.history;\n\t\tconst deltasToUndo = batchToUndo.deltas.slice();\n\t\tdeltasToUndo.reverse();\n\n\t\t// We will process each delta from `batchToUndo`, in reverse order. If there was deltas A, B and C in undone batch,\n\t\t// we need to revert them in reverse order, so first reverse C, then B, then A.\n\t\tfor ( let deltaToUndo of deltasToUndo ) {\n\t\t\t// Keep in mind that all algorithms return arrays. That's because the transformation might result in multiple\n\t\t\t// deltas, so we need arrays to handle them anyway. To simplify algorithms, it is better to always have arrays\n\t\t\t// in mind. For simplicity reasons, we will use singular form in descriptions and names.\n\t\t\tconst baseVersion = deltaToUndo.baseVersion;\n\t\t\tconst nextBaseVersion = baseVersion + deltaToUndo.operations.length;\n\n\t\t\t// 1. Get updated version of the delta from the history.\n\t\t\t// Batch stored in the undo command might have an outdated version of the delta that should be undone.\n\t\t\t// To prevent errors, we will take an updated version of it from the history, basing on delta's `baseVersion`.\n\t\t\tconst updatedDeltaToUndo = history.getDelta( baseVersion );\n\n\t\t\t// This is a safe valve in case of not finding delta to undo in history. This may come up if that delta\n\t\t\t// got updated into no deltas, or removed from history.\n\t\t\tif ( updatedDeltaToUndo === null ) {\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\t// 2. Reverse delta from the history.\n\t\t\tupdatedDeltaToUndo.reverse();\n\t\t\tlet reversedDelta = [];\n\n\t\t\tfor ( let delta of updatedDeltaToUndo ) {\n\t\t\t\treversedDelta.push( delta.getReversed() );\n\t\t\t}\n\n\t\t\t// Stores history deltas transformed by `deltaToUndo`. Will be used later for updating document history.\n\t\t\tconst updatedHistoryDeltas = {};\n\n\t\t\t// 3. Transform reversed delta by history deltas that happened after delta to undo. We have to bring\n\t\t\t// reversed delta to the current state of document. While doing this, we will also update history deltas\n\t\t\t// to the state which \"does not remember\" delta that we undo.\n\t\t\tfor ( let historyDelta of history.getDeltas( nextBaseVersion ) ) {\n\t\t\t\t// 3.1. Transform selection range stored with history batch by reversed delta.\n\t\t\t\t// It is important to keep stored selection ranges updated. As we are removing and updating deltas in the history,\n\t\t\t\t// selection ranges would base on outdated history state.\n\t\t\t\tconst itemIndex = this._getItemIndexFromBaseVersion( historyDelta.baseVersion );\n\n\t\t\t\t// `itemIndex` will be `null` for `historyDelta` if it is not the first delta in it's batch.\n\t\t\t\t// This is fine, because we want to transform each selection only once, before transforming reversed delta\n\t\t\t\t// by the first delta of the batch connected with the ranges.\n\t\t\t\tif ( itemIndex !== null ) {\n\t\t\t\t\tthis._stack[ itemIndex ].selection.ranges = transformRangesByDeltas( this._stack[ itemIndex ].selection.ranges, reversedDelta );\n\t\t\t\t}\n\n\t\t\t\t// 3.2. Transform reversed delta by history delta and vice-versa.\n\t\t\t\tconst results = transformDeltaSets( reversedDelta, [ historyDelta ], true );\n\n\t\t\t\treversedDelta = results.deltasA;\n\t\t\t\tconst updatedHistoryDelta = results.deltasB;\n\n\t\t\t\t// 3.3. Store updated history delta. Later, it will be updated in `history`.\n\t\t\t\tif ( !updatedHistoryDeltas[ historyDelta.baseVersion ] ) {\n\t\t\t\t\tupdatedHistoryDeltas[ historyDelta.baseVersion ] = [];\n\t\t\t\t}\n\n\t\t\t\tupdatedHistoryDeltas[ historyDelta.baseVersion ] = updatedHistoryDeltas[ historyDelta.baseVersion ].concat( updatedHistoryDelta );\n\t\t\t}\n\n\t\t\t// 4. After reversed delta has been transformed by all history deltas, apply it.\n\t\t\tfor ( let delta of reversedDelta ) {\n\t\t\t\t// Fix base version.\n\t\t\t\tdelta.baseVersion = document.version;\n\n\t\t\t\t// Before applying, add the delta to the `undoingBatch`.\n\t\t\t\tundoingBatch.addDelta( delta );\n\n\t\t\t\t// Now, apply all operations of the delta.\n\t\t\t\tfor ( let operation of delta.operations ) {\n\t\t\t\t\tdocument.applyOperation( operation );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// 5. Remove reversed delta from the history.\n\t\t\thistory.removeDelta( baseVersion );\n\n\t\t\t// And all deltas that are reversing it.\n\t\t\t// So the history looks like both original and reversing deltas never happened.\n\t\t\t// That's why we have to update history deltas - some of them might have been basing on deltas that we are now removing.\n\t\t\tfor ( let delta of reversedDelta ) {\n\t\t\t\thistory.removeDelta( delta.baseVersion );\n\t\t\t}\n\n\t\t\t// 6. Update history deltas in history.\n\t\t\tfor ( let historyBaseVersion in updatedHistoryDeltas ) {\n\t\t\t\thistory.updateDelta( Number( historyBaseVersion ), updatedHistoryDeltas[ historyBaseVersion ] );\n\t\t\t}\n\t\t}\n\n\t\treturn undoingBatch;\n\t}\n}\n\n/**\n * Fired when execution of the command reverts some batch.\n *\n * @event revert\n */\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-undo/src/undocommand.js\n// module id = 384\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module undo/undoengine\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport UndoCommand from './undocommand';\nimport RedoCommand from './redocommand';\n\n/**\n * The undo engine feature.\n *\n * Undo brings in possibility to undo and redo changes done in the model by deltas through\n * the {@link module:engine/model/document~Document#batch Batch API}.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class UndoEngine extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tconstructor( editor ) {\n\t\tsuper( editor );\n\n\t\t/**\n\t\t * The command that manages undo {@link module:engine/model/batch~Batch batches} stack (history).\n\t\t * Created and registered during the {@link #init feature initialization}.\n\t\t *\n\t\t * @private\n\t\t * @member {undo.UndoEngineCommand} #_undoCommand\n\t\t */\n\n\t\t/**\n\t\t * The command that manages redo {@link module:engine/model/batch~Batch batches} stack (history).\n\t\t * Created and registered during the {@link #init feature initialization}.\n\t\t *\n\t\t * @private\n\t\t * @member {undo.UndoEngineCommand} #_redoCommand\n\t\t */\n\n\t\t/**\n\t\t * Keeps track of which batches were registered in undo.\n\t\t *\n\t\t * @private\n\t\t * @member {WeakSet.<module:engine/model/batch~Batch>}\n\t\t */\n\t\tthis._batchRegistry = new WeakSet();\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\t// Create commands.\n\t\tthis._undoCommand = new UndoCommand( this.editor );\n\t\tthis._redoCommand = new RedoCommand( this.editor );\n\n\t\t// Register command to the editor.\n\t\tthis.editor.commands.set( 'undo', this._undoCommand );\n\t\tthis.editor.commands.set( 'redo', this._redoCommand );\n\n\t\tthis.listenTo( this.editor.document, 'change', ( evt, type, changes, batch ) => {\n\t\t\t// If changes are not a part of a batch or this is not a new batch, omit those changes.\n\t\t\tif ( this._batchRegistry.has( batch ) || batch.type == 'transparent' ) {\n\t\t\t\treturn;\n\t\t\t} else {\n\t\t\t\tif ( this._redoCommand._createdBatches.has( batch ) ) {\n\t\t\t\t\t// If this batch comes from `redoCommand`, add it to `undoCommand` stack.\n\t\t\t\t\tthis._undoCommand.addBatch( batch );\n\t\t\t\t} else if ( !this._undoCommand._createdBatches.has( batch ) ) {\n\t\t\t\t\t// A default batch - these are new changes in the document, not introduced by undo feature.\n\t\t\t\t\t// Add them to `undoCommand` stack and clear `redoCommand` stack.\n\t\t\t\t\tthis._undoCommand.addBatch( batch );\n\t\t\t\t\tthis._redoCommand.clearStack();\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Add the batch to the registry so it will not be processed again.\n\t\t\tthis._batchRegistry.add( batch );\n\t\t}, { priority: 'highest' } );\n\n\t\tthis.listenTo( this._undoCommand, 'revert', ( evt, undoneBatch, undoingBatch ) => {\n\t\t\tthis._redoCommand.addBatch( undoingBatch );\n\t\t} );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-undo/src/undoengine.js\n// module id = 385\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/config\n */\n\nimport isPlainObject from './lib/lodash/isPlainObject';\n\n/**\n * Handles a configuration dictionary.\n */\nexport default class Config {\n\t/**\n\t * Creates an instance of the {@link ~Config} class.\n\t *\n\t * @param {Object} [configurations] The initial configurations to be set. Usually, provided by the user.\n\t * @param {Object} [defaultConfigurations] The default configurations. Usually, provided by the system.\n\t */\n\tconstructor( configurations, defaultConfigurations ) {\n\t\t/**\n\t\t * Store for the whole configuration.\n\t\t *\n\t\t * @private\n\t\t * @member {Object}\n\t\t */\n\t\tthis._config = {};\n\n\t\t// Set default configuration.\n\t\tif ( defaultConfigurations ) {\n\t\t\tthis.define( defaultConfigurations );\n\t\t}\n\n\t\t// Set initial configuration.\n\t\tif ( configurations ) {\n\t\t\tthis._setObjectToTarget( this._config, configurations );\n\t\t}\n\t}\n\n\t/**\n\t * Set configuration values.\n\t *\n\t * It accepts both a name/value pair or an object, which properties and values will be used to set\n\t * configurations.\n\t *\n\t * It also accepts setting a \"deep configuration\" by using dots in the name. For example, `'resize.width'` sets\n\t * the value for the `width` configuration in the `resize` subset.\n\t *\n\t *\t\tconfig.set( 'width', 500 );\n\t *\t\tconfig.set( 'toolbar.collapsed', true );\n\t *\n\t *\t\t// Equivalent to:\n\t *\t\tconfig.set( {\n\t *\t\t\twidth: 500\n\t *\t\t\ttoolbar: {\n\t *\t\t\t\tcollapsed: true\n\t *\t\t\t}\n\t *\t\t} );\n\t *\n\t * Passing an object as the value will amend the configuration, not replace it.\n\t *\n\t *\t\tconfig.set( 'toolbar', {\n\t *\t\t\tcollapsed: true,\n\t *\t\t} );\n\t *\n\t *\t\tconfig.set( 'toolbar', {\n\t *\t\t\tcolor: 'red',\n\t *\t\t} );\n\t *\n\t *\t\tconfig.get( 'toolbar.collapsed' ); // true\n\t *\t\tconfig.get( 'toolbar.color' ); // 'red'\n\t *\n\t * @param {String|Object} name The configuration name or an object from which take properties as\n\t * configuration entries. Configuration names are case-sensitive.\n\t * @param {*} value The configuration value. Used if a name is passed.\n\t */\n\tset( name, value ) {\n\t\tthis._setToTarget( this._config, name, value );\n\t}\n\n\t/**\n\t * Does exactly the same as {@link #set} with one exception – passed configuration extends\n\t * existing one, but does not overwrite already defined values.\n\t *\n\t * This method is supposed to be called by plugin developers to setup plugin's configurations. It would be\n\t * rarely used for other needs.\n\t *\n\t * @param {String|Object} name The configuration name or an object from which take properties as\n\t * configuration entries. Configuration names are case-sensitive.\n\t * @param {*} value The configuration value. Used if a name is passed.\n\t */\n\tdefine( name, value ) {\n\t\tconst isDefine = true;\n\n\t\tthis._setToTarget( this._config, name, value, isDefine );\n\t}\n\n\t/**\n\t * Gets the value for a configuration entry.\n\t *\n\t *\t\tconfig.get( 'name' );\n\t *\n\t * Deep configurations can be retrieved by separating each part with a dot.\n\t *\n\t *\t\tconfig.get( 'toolbar.collapsed' );\n\t *\n\t * @param {String} name The configuration name. Configuration names are case-sensitive.\n\t * @returns {*} The configuration value or `undefined` if the configuration entry was not found.\n\t */\n\tget( name ) {\n\t\treturn this._getFromSource( this._config, name );\n\t}\n\n\t/**\n\t * Saves passed configuration to the specified target (nested object).\n\t *\n\t * @private\n\t * @param {Object} target Nested config object.\n\t * @param {String|Object} name The configuration name or an object from which take properties as\n\t * configuration entries. Configuration names are case-sensitive.\n\t * @param {*} value The configuration value. Used if a name is passed.\n\t * @param {Boolean} [isDefine=false] Define if passed configuration should overwrite existing one.\n\t */\n\t_setToTarget( target, name, value, isDefine = false ) {\n\t\t// In case of an object, iterate through it and call `_setToTarget` again for each property.\n\t\tif ( isPlainObject( name ) ) {\n\t\t\tthis._setObjectToTarget( target, name, isDefine );\n\n\t\t\treturn;\n\t\t}\n\n\t\t// The configuration name should be split into parts if it has dots. E.g. `resize.width` -> [`resize`, `width`].\n\t\tconst parts = name.split( '.' );\n\n\t\t// Take the name of the configuration out of the parts. E.g. `resize.width` -> `width`.\n\t\tname = parts.pop();\n\n\t\t// Iterate over parts to check if currently stored configuration has proper structure.\n\t\tfor ( let part of parts ) {\n\t\t\t// If there is no object for specified part then create one.\n\t\t\tif ( !isPlainObject( target[ part ] ) ) {\n\t\t\t\ttarget[ part ] = {};\n\t\t\t}\n\n\t\t\t// Nested object becomes a target.\n\t\t\ttarget = target[ part ];\n\t\t}\n\n\t\t// In case of value is an object.\n\t\tif ( isPlainObject( value ) ) {\n\t\t\t// We take care of proper config structure.\n\t\t\tif ( !isPlainObject( target[ name ] ) ) {\n\t\t\t\ttarget[ name ] = {};\n\t\t\t}\n\n\t\t\ttarget = target[ name ];\n\n\t\t\t// And iterate through this object calling `_setToTarget` again for each property.\n\t\t\tthis._setObjectToTarget( target, value, isDefine );\n\n\t\t\treturn;\n\t\t}\n\n\t\t// Do nothing if we are defining configuration for non empty name.\n\t\tif ( isDefine && typeof target[ name ] != 'undefined' ) {\n\t\t\treturn;\n\t\t}\n\n\t\ttarget[ name ] = value;\n\t}\n\n\t/**\n\t * Get specified configuration from specified source (nested object).\n\t *\n\t * @private\n\t * @param {Object} source level of nested object.\n\t * @param {String} name The configuration name. Configuration names are case-sensitive.\n\t * @returns {*} The configuration value or `undefined` if the configuration entry was not found.\n\t */\n\t_getFromSource( source, name ) {\n\t\t// The configuration name should be split into parts if it has dots. E.g. `resize.width` -> [`resize`, `width`].\n\t\tconst parts = name.split( '.' );\n\n\t\t// Take the name of the configuration out of the parts. E.g. `resize.width` -> `width`.\n\t\tname = parts.pop();\n\n\t\t// Iterate over parts to check if currently stored configuration has proper structure.\n\t\tfor ( let part of parts ) {\n\t\t\tif ( !isPlainObject( source[ part ] ) ) {\n\t\t\t\tsource = null;\n\t\t\t\tbreak;\n\t\t\t}\n\n\t\t\t// Nested object becomes a source.\n\t\t\tsource = source[ part ];\n\t\t}\n\n\t\t// Always returns undefined for non existing configuration\n\t\treturn source ? source[ name ] : undefined;\n\t}\n\n\t/**\n\t * Iterates through passed object and calls {@link #_setToTarget} method with object key and value for each property.\n\t *\n\t * @private\n\t * @param {Object} target Nested config object.\n\t * @param {Object} configuration Configuration data set\n\t * @param {Boolean} [isDefine] Defines if passed configuration is default configuration or not.\n\t */\n\t_setObjectToTarget( target, configuration, isDefine ) {\n\t\tObject.keys( configuration ).forEach( key => {\n\t\t\tthis._setToTarget( target, key, configuration[ key ], isDefine );\n\t\t} );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/config.js\n// module id = 386\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/difftochanges\n */\n\n/**\n * Creates a set of changes which need to be applied to the input in order to transform\n * it into the output. This function can be used with strings or arrays.\n *\n *\t\tconst input = Array.from( 'abc' );\n *\t\tconst output = Array.from( 'xaby' );\n *\t\tconst changes = diffToChanges( diff( input, output ), output );\n *\n *\t\tchanges.forEach( change => {\n *\t\t\tif ( change.type == 'insert' ) {\n *\t\t\t\tinput.splice( change.index, 0, ...change.values );\n *\t\t\t} else if ( change.type == 'delete' ) {\n *\t\t\t\tinput.splice( change.index, change.howMany );\n *\t\t\t}\n *\t\t} );\n *\n *\t\tinput.join( '' ) == output.join( '' ); // -> true\n *\n * @param {Array.<'equal'|'insert'|'delete'>} diff Result of {@link module:utils/diff~diff}.\n * @param {String|Array} output The string or array which was passed as diff's output.\n * @returns {Array.<Object>} Set of changes (insert or delete) which need to be applied to the input\n * in order to transform it into the output.\n */\nexport default function diffToChanges( diff, output ) {\n\tconst changes = [];\n\tlet index = 0;\n\tlet lastOperation;\n\n\tdiff.forEach( change => {\n\t\tif ( change == 'equal' ) {\n\t\t\tpushLast();\n\n\t\t\tindex++;\n\t\t} else if ( change == 'insert' ) {\n\t\t\tif ( isContinuationOf( 'insert' ) ) {\n\t\t\t\tlastOperation.values.push( output[ index ] );\n\t\t\t} else {\n\t\t\t\tpushLast();\n\n\t\t\t\tlastOperation = {\n\t\t\t\t\ttype: 'insert',\n\t\t\t\t\tindex: index,\n\t\t\t\t\tvalues: [ output[ index ] ]\n\t\t\t\t};\n\t\t\t}\n\n\t\t\tindex++;\n\t\t} else /* if ( change == 'delete' ) */ {\n\t\t\tif ( isContinuationOf( 'delete' ) ) {\n\t\t\t\tlastOperation.howMany++;\n\t\t\t} else {\n\t\t\t\tpushLast();\n\n\t\t\t\tlastOperation = {\n\t\t\t\t\ttype: 'delete',\n\t\t\t\t\tindex: index,\n\t\t\t\t\thowMany: 1\n\t\t\t\t};\n\t\t\t}\n\t\t}\n\t} );\n\n\tpushLast();\n\n\treturn changes;\n\n\tfunction pushLast() {\n\t\tif ( lastOperation ) {\n\t\t\tchanges.push( lastOperation );\n\t\t\tlastOperation = null;\n\t\t}\n\t}\n\n\tfunction isContinuationOf( expected ) {\n\t\treturn lastOperation && lastOperation.type == expected;\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/difftochanges.js\n// module id = 387\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/dom/getcommonancestor\n */\n\nimport getAncestors from './getancestors';\n\n/**\n * Searches and returns the lowest common ancestor of two given nodes.\n *\n * @param {Node} nodeA First node.\n * @param {Node} nodeB Second node.\n * @returns {Node|DocumentFragment|Document|null} Lowest common ancestor of both nodes or `null` if nodes do not have a common ancestor.\n */\nexport default function getCommonAncestor( nodeA, nodeB ) {\n\tconst ancestorsA = getAncestors( nodeA );\n\tconst ancestorsB = getAncestors( nodeB );\n\n\tlet i = 0;\n\n\t// It does not matter which array is shorter.\n\twhile ( ancestorsA[ i ] == ancestorsB[ i ] && ancestorsA[ i ] ) {\n\t\ti++;\n\t}\n\n\treturn i === 0 ? null : ancestorsA[ i - 1 ];\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/dom/getcommonancestor.js\n// module id = 388\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/* globals HTMLTextAreaElement */\n\n/**\n * @module utils/dom/getdatafromelement\n */\n\n/**\n * Gets data from a given source element.\n *\n * @param {HTMLElement} el The element from which the data will be retrieved.\n * @returns {String} The data string.\n */\nexport default function getDataFromElement( el ) {\n\tif ( el instanceof HTMLTextAreaElement ) {\n\t\treturn el.value;\n\t}\n\n\treturn el.innerHTML;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/dom/getdatafromelement.js\n// module id = 389\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/dom/getpositionedancestor\n */\n\nimport global from './global';\n\n/**\n * For a given element, returns the nearest ancestor element which CSS position is not \"static\".\n *\n * @param {HTMLElement} element Native DOM element to be checked.\n * @returns {HTMLElement|null}\n */\nexport default function getPositionedAncestor( element ) {\n\twhile ( element && element.tagName.toLowerCase() != 'html' ) {\n\t\tif ( global.window.getComputedStyle( element ).position != 'static' ) {\n\t\t\treturn element;\n\t\t}\n\n\t\telement = element.parentElement;\n\t}\n\n\treturn null;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/dom/getpositionedancestor.js\n// module id = 390\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/dom/indexof\n */\n\n/**\n * Returns index of the node in the parent element.\n *\n * @param {Node} node Node which index is tested.\n * @returns {Number} Index of the node in the parent element. Returns 0 if node has no parent.\n */\nexport default function indexOf( node ) {\n\tlet index = 0;\n\n\twhile ( node.previousSibling ) {\n\t\tnode = node.previousSibling;\n\t\tindex++;\n\t}\n\n\treturn index;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/dom/indexof.js\n// module id = 391\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/dom/insertat\n */\n\n/**\n * Inserts node to the parent at given index.\n *\n * @param {Element} parentElement Parent element.\n * @param {Number} index Insertions index.\n * @param {Node} nodeToInsert Node to insert.\n */\nexport default function insertAt( parentElement, index, nodeToInsert ) {\n\tparentElement.insertBefore( nodeToInsert, parentElement.childNodes[ index ] || null );\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/dom/insertat.js\n// module id = 392\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/dom/isrange\n */\n\n/**\n * Checks if the object is a native DOM Range.\n *\n * @param {*} obj\n * @returns {Boolean}\n */\nexport default function isRange( obj ) {\n\treturn Object.prototype.toString.apply( obj ) == '[object Range]';\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/dom/isrange.js\n// module id = 393\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/dom/position\n */\n\nimport global from './global';\nimport Rect from './rect';\nimport getPositionedAncestor from './getpositionedancestor';\n\n/**\n * Calculates the `position: absolute` coordinates of a given element so it can be positioned with respect to the\n * target in the visually most efficient way, taking various restrictions like viewport or limiter geometry\n * into consideration.\n *\n *\t\t// The element which is to be positioned.\n *\t\tconst element = document.body.querySelector( '#toolbar' );\n *\n *\t\t// A target to which the element is positioned relatively.\n *\t\tconst target = document.body.querySelector( '#container' );\n *\n *\t\t// Finding the optimal coordinates for the positioning.\n *\t\tconst { left, top, name } = getOptimalPosition( {\n *\t\t\telement: element,\n *\t\t\ttarget: target,\n *\n * \t\t\t// The algorithm will chose among these positions to meet the requirements such\n * \t\t\t// as \"limiter\" element or \"fitInViewport\", set below. The positions are considered\n * \t\t\t// in the order of the array.\n *\t\t\tpositions: [\n *\t\t\t\t//\n *\t\t\t \t//\t[ Target ]\n *\t\t\t\t//\t+-----------------+\n *\t\t\t\t//\t|     Element     |\n *\t\t\t\t//\t+-----------------+\n *\t\t\t\t//\n *\t\t\t\ttargetRect => ( {\n *\t\t\t\t\ttop: targetRect.bottom,\n *\t\t\t\t\tleft: targetRect.left,\n *\t\t\t\t\tname: 'mySouthEastPosition'\n *\t\t\t\t} ),\n *\n *\t\t\t\t//\n *\t\t\t\t//\t+-----------------+\n *\t\t\t\t//\t|     Element     |\n *\t\t\t\t//\t+-----------------+\n *\t\t\t\t//\t[ Target ]\n *\t\t\t\t//\n *\t\t\t\t( targetRect, elementRect ) => ( {\n *\t\t\t\t\ttop: targetRect.top - elementRect.height,\n *\t\t\t\t\tleft: targetRect.left,\n *\t\t\t\t\tname: 'myNorthEastPosition'\n *\t\t\t\t} )\n *\t\t\t],\n *\n *\t\t\t// Find a position such guarantees the element remains within visible boundaries of <body>.\n *\t\t\tlimiter: document.body,\n *\n *\t\t\t// Find a position such guarantees the element remains within visible boundaries of the browser viewport.\n *\t\t\tfitInViewport: true\n *\t\t} );\n *\n *\t\t// The best position which fits into document.body and the viewport. May be useful\n *\t\t// to set proper class on the `element`.\n *\t\tconsole.log( name ); -> \"myNorthEastPosition\"\n *\n *\t\t// Using the absolute coordinates which has been found to position the element\n *\t\t// as in the diagram depicting the \"myNorthEastPosition\" position.\n *\t\telement.style.top = top;\n *\t\telement.style.left = left;\n *\n * @param {module:utils/dom/position~Options} options Positioning options object.\n * @returns {module:utils/dom/position~Position}\n */\nexport function getOptimalPosition( { element, target, positions, limiter, fitInViewport } ) {\n\tconst positionedElementAncestor = getPositionedAncestor( element.parentElement );\n\tconst elementRect = new Rect( element );\n\tconst targetRect = new Rect( target );\n\n\tlet bestPosition;\n\tlet name;\n\n\t// If there are no limits, just grab the very first position and be done with that drama.\n\tif ( !limiter && !fitInViewport ) {\n\t\t[ name, bestPosition ] = getPosition( positions[ 0 ], targetRect, elementRect );\n\t} else {\n\t\tconst limiterRect = limiter && new Rect( limiter );\n\t\tconst viewportRect = fitInViewport && Rect.getViewportRect();\n\n\t\t[ name, bestPosition ] =\n\t\t\tgetBestPosition( positions, targetRect, elementRect, limiterRect, viewportRect ) ||\n\t\t\t// If there's no best position found, i.e. when all intersections have no area because\n\t\t\t// rects have no width or height, then just use the first available position.\n\t\t\tgetPosition( positions[ 0 ], targetRect, elementRect );\n\t}\n\n\tlet { left, top } = getAbsoluteRectCoordinates( bestPosition );\n\n\tif ( positionedElementAncestor ) {\n\t\tconst ancestorPosition = getAbsoluteRectCoordinates( new Rect( positionedElementAncestor ) );\n\t\tconst ancestorComputedStyles = global.window.getComputedStyle( positionedElementAncestor );\n\n\t\t// (https://github.com/ckeditor/ckeditor5-ui-default/issues/126)\n\t\t// If there's some positioned ancestor of the panel, then its `Rect` must be taken into\n\t\t// consideration. `Rect` is always relative to the viewport while `position: absolute` works\n\t\t// with respect to that positioned ancestor.\n\t\tleft -= ancestorPosition.left;\n\t\ttop -= ancestorPosition.top;\n\n\t\t// (https://github.com/ckeditor/ckeditor5-utils/issues/139)\n\t\t// If there's some positioned ancestor of the panel, not only its position must be taken into\n\t\t// consideration (see above) but also its internal scrolls. Scroll have an impact here because `Rect`\n\t\t// is relative to the viewport (it doesn't care about scrolling), while `position: absolute`\n\t\t// must compensate that scrolling.\n\t\tleft += positionedElementAncestor.scrollLeft;\n\t\ttop += positionedElementAncestor.scrollTop;\n\n\t\t// (https://github.com/ckeditor/ckeditor5-utils/issues/139)\n\t\t// If there's some positioned ancestor of the panel, then its `Rect` includes its CSS `borderWidth`\n\t\t// while `position: absolute` positioning does not consider it.\n\t\t// E.g. `{ position: absolute, top: 0, left: 0 }` means upper left corner of the element,\n\t\t// not upper-left corner of its border.\n\t\tleft -= parseInt( ancestorComputedStyles.borderLeftWidth, 10 );\n\t\ttop -= parseInt( ancestorComputedStyles.borderTopWidth, 10 );\n\t}\n\n\treturn { left, top, name };\n}\n\n// For given position function, returns a corresponding `Rect` instance.\n//\n// @private\n// @param {Function} position A function returning {@link module:utils/dom/position~Position}.\n// @param {utils/dom/rect~Rect} targetRect A rect of the target.\n// @param {utils/dom/rect~Rect} elementRect A rect of positioned element.\n// @returns {Array} An array containing position name and its Rect.\nfunction getPosition( position, targetRect, elementRect ) {\n\tconst { left, top, name } = position( targetRect, elementRect );\n\n\treturn [ name, elementRect.clone().moveTo( left, top ) ];\n}\n\n// For a given array of positioning functions, returns such that provides the best\n// fit of the `elementRect` into the `limiterRect` and `viewportRect`.\n//\n// @private\n// @param {module:utils/dom/position~Options#positions} positions Functions returning\n// {@link module:utils/dom/position~Position} to be checked, in the order of preference.\n// @param {utils/dom/rect~Rect} targetRect A rect of the {@link module:utils/dom/position~Options#target}.\n// @param {utils/dom/rect~Rect} elementRect A rect of positioned {@link module:utils/dom/position~Options#element}.\n// @param {utils/dom/rect~Rect} limiterRect A rect of the {@link module:utils/dom/position~Options#limiter}.\n// @param {utils/dom/rect~Rect} viewportRect A rect of the viewport.\n// @returns {Array} An array containing the name of the position and it's rect.\nfunction getBestPosition( positions, targetRect, elementRect, limiterRect, viewportRect ) {\n\tlet maxLimiterIntersectArea = 0;\n\tlet maxViewportIntersectArea = 0;\n\tlet bestPositionRect;\n\tlet bestPositionName;\n\n\t// This is when element is fully visible.\n\tconst elementRectArea = elementRect.getArea();\n\n\tpositions.some( position => {\n\t\tconst [ positionName, positionRect ] = getPosition( position, targetRect, elementRect );\n\t\tlet limiterIntersectArea;\n\t\tlet viewportIntersectArea;\n\n\t\tif ( limiterRect ) {\n\t\t\tif ( viewportRect ) {\n\t\t\t\t// Consider only the part of the limiter which is visible in the viewport. So the limiter is getting limited.\n\t\t\t\tconst limiterViewportIntersectRect = limiterRect.getIntersection( viewportRect );\n\n\t\t\t\tif ( limiterViewportIntersectRect ) {\n\t\t\t\t\t// If the limiter is within the viewport, then check the intersection between that part of the\n\t\t\t\t\t// limiter and actual position.\n\t\t\t\t\tlimiterIntersectArea = limiterViewportIntersectRect.getIntersectionArea( positionRect );\n\t\t\t\t} else {\n\t\t\t\t\tlimiterIntersectArea = 0;\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\tlimiterIntersectArea = limiterRect.getIntersectionArea( positionRect );\n\t\t\t}\n\t\t}\n\n\t\tif ( viewportRect ) {\n\t\t\tviewportIntersectArea = viewportRect.getIntersectionArea( positionRect );\n\t\t}\n\n\t\t// The only criterion: intersection with the viewport.\n\t\tif ( viewportRect && !limiterRect ) {\n\t\t\tif ( viewportIntersectArea > maxViewportIntersectArea ) {\n\t\t\t\tsetBestPosition();\n\t\t\t}\n\t\t}\n\t\t// The only criterion: intersection with the limiter.\n\t\telse if ( !viewportRect && limiterRect ) {\n\t\t\tif ( limiterIntersectArea > maxLimiterIntersectArea ) {\n\t\t\t\tsetBestPosition();\n\t\t\t}\n\t\t}\n\t\t// Two criteria: intersection with the viewport and the limiter visible in the viewport.\n\t\telse {\n\t\t\tif ( viewportIntersectArea > maxViewportIntersectArea && limiterIntersectArea >= maxLimiterIntersectArea ) {\n\t\t\t\tsetBestPosition();\n\t\t\t} else if ( viewportIntersectArea >= maxViewportIntersectArea && limiterIntersectArea > maxLimiterIntersectArea ) {\n\t\t\t\tsetBestPosition();\n\t\t\t}\n\t\t}\n\n\t\tfunction setBestPosition() {\n\t\t\tmaxViewportIntersectArea = viewportIntersectArea;\n\t\t\tmaxLimiterIntersectArea = limiterIntersectArea;\n\t\t\tbestPositionRect = positionRect;\n\t\t\tbestPositionName = positionName;\n\t\t}\n\n\t\t// If a such position is found that element is fully container by the limiter then, obviously,\n\t\t// there will be no better one, so finishing.\n\t\treturn limiterIntersectArea === elementRectArea;\n\t} );\n\n\treturn bestPositionRect ? [ bestPositionName, bestPositionRect ] : null;\n}\n\n// DOMRect (also Rect) works in a scroll–independent geometry but `position: absolute` doesn't.\n// This function converts Rect to `position: absolute` coordinates.\n//\n// @private\n// @param {utils/dom/rect~Rect} rect A rect to be converted.\n// @returns {Object} Object containing `left` and `top` properties, in absolute coordinates.\nfunction getAbsoluteRectCoordinates( { left, top } ) {\n\tconst { scrollX, scrollY } = global.window;\n\n\treturn {\n\t\tleft: left + scrollX,\n\t\ttop: top + scrollY,\n\t};\n}\n\n/**\n * The `getOptimalPosition` helper options.\n *\n * @interface module:utils/dom/position~Options\n */\n\n/**\n * Element that is to be positioned.\n *\n * @member {HTMLElement} #element\n */\n\n/**\n * Target with respect to which the `element` is to be positioned.\n *\n * @member {HTMLElement|Range|ClientRect} #target\n */\n\n/**\n * An array of functions which return {@link module:utils/dom/position~Position} relative\n * to the `target`, in the order of preference.\n *\n * @member {Array.<Function>} #positions\n */\n\n/**\n * When set, the algorithm will chose position which fits the most in the\n * limiter's bounding rect.\n *\n * @member {HTMLElement|Range|ClientRect} #limiter\n */\n\n/**\n * When set, the algorithm will chose such a position which fits `element`\n * the most inside visible viewport.\n *\n * @member {Boolean} #fitInViewport\n */\n\n/**\n * An object describing a position in `position: absolute` coordinate\n * system, along with position name.\n *\n * @typedef {Object} module:utils/dom/position~Position\n *\n * @property {Number} top Top position offset.\n * @property {Number} left Left position offset.\n * @property {String} name Name of the position.\n */\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/dom/position.js\n// module id = 394\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/dom/rect\n */\n\nimport global from './global';\nimport isRange from './isrange';\nimport isElement from '../lib/lodash/isElement';\n\nconst rectProperties = [ 'top', 'right', 'bottom', 'left', 'width', 'height' ];\n\n/**\n * A helper class representing a `ClientRect` object, e.g. value returned by\n * the native `object.getBoundingClientRect()` method. Provides a set of methods\n * to manipulate the rect and compare it against other `Rect` instances.\n */\nexport default class Rect {\n\t/**\n\t * Creates an instance of rect.\n\t *\n\t *\t\t// Rect of an HTMLElement.\n\t *\t\tconst rectA = new Rect( document.body );\n\t *\n\t *\t\t// Rect of a DOM Range.\n\t *\t\tconst rectB = new Rect( document.getSelection().getRangeAt( 0 ) );\n\t *\n\t *\t\t// Rect out of an object.\n\t *\t\tconst rectC = new Rect( { top: 0, right: 10, bottom: 10, left: 0, width: 10, height: 10 } );\n\t *\n\t *\t\t// Rect out of another Rect instance.\n\t *\t\tconst rectD = new Rect( rectC );\n\t *\n\t *\t\t// Rect out of a ClientRect.\n\t *\t\tconst rectE = new Rect( document.body.getClientRects().item( 0 ) );\n\t *\n\t * @param {HTMLElement|Range|ClientRect|module:utils/dom/rect~Rect|Object} obj A source object to create the rect.\n\t */\n\tconstructor( obj ) {\n\t\tif ( isElement( obj ) || isRange( obj ) ) {\n\t\t\tobj = obj.getBoundingClientRect();\n\t\t}\n\n\t\trectProperties.forEach( p => this[ p ] = obj[ p ] );\n\n\t\t/**\n\t\t * The \"top\" value of the rect.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Number} #top\n\t\t */\n\n\t\t/**\n\t\t * The \"right\" value of the rect.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Number} #right\n\t\t */\n\n\t\t/**\n\t\t * The \"bottom\" value of the rect.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Number} #bottom\n\t\t */\n\n\t\t/**\n\t\t * The \"left\" value of the rect.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Number} #left\n\t\t */\n\n\t\t/**\n\t\t * The \"width\" value of the rect.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Number} #width\n\t\t */\n\n\t\t/**\n\t\t * The \"height\" value of the rect.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Number} #height\n\t\t */\n\t}\n\n\t/**\n\t * Returns a clone of the rect.\n\t *\n\t * @returns {module:utils/dom/rect~Rect} A cloned rect.\n\t */\n\tclone() {\n\t\treturn new Rect( this );\n\t}\n\n\t/**\n\t * Moves the rect so that its upper–left corner lands in desired `[ x, y ]` location.\n\t *\n\t * @param {Number} x Desired horizontal location.\n\t * @param {Number} y Desired vertical location.\n\t * @returns {module:utils/dom/rect~Rect} A rect which has been moved.\n\t */\n\tmoveTo( x, y ) {\n\t\tthis.top = y;\n\t\tthis.right = x + this.width;\n\t\tthis.bottom = y + this.height;\n\t\tthis.left = x;\n\n\t\treturn this;\n\t}\n\n\t/**\n\t * Moves the rect in–place by a dedicated offset.\n\t *\n\t * @param {Number} x A horizontal offset.\n\t * @param {Number} y A vertical offset\n\t * @returns {module:utils/dom/rect~Rect} A rect which has been moved.\n\t */\n\tmoveBy( x, y ) {\n\t\tthis.top += y;\n\t\tthis.right += x;\n\t\tthis.left += x;\n\t\tthis.bottom += y;\n\n\t\treturn this;\n\t}\n\n\t/**\n\t * Returns a new rect a a result of intersection with another rect.\n\t *\n\t * @param {module:utils/dom/rect~Rect} anotherRect\n\t * @returns {module:utils/dom/rect~Rect}\n\t */\n\tgetIntersection( anotherRect ) {\n\t\tconst rect = {\n\t\t\ttop: Math.max( this.top, anotherRect.top ),\n\t\t\tright: Math.min( this.right, anotherRect.right ),\n\t\t\tbottom: Math.min( this.bottom, anotherRect.bottom ),\n\t\t\tleft: Math.max( this.left, anotherRect.left )\n\t\t};\n\n\t\trect.width = rect.right - rect.left;\n\t\trect.height = rect.bottom - rect.top;\n\n\t\tif ( rect.width < 0 || rect.height < 0 ) {\n\t\t\treturn null;\n\t\t} else {\n\t\t\treturn new Rect( rect );\n\t\t}\n\t}\n\n\t/**\n\t * Returns the area of intersection with another rect.\n\t *\n\t * @param {module:utils/dom/rect~Rect} anotherRect [description]\n\t * @returns {Number} Area of intersection.\n\t */\n\tgetIntersectionArea( anotherRect ) {\n\t\tconst rect = this.getIntersection( anotherRect );\n\n\t\tif ( rect ) {\n\t\t\treturn rect.getArea();\n\t\t} else {\n\t\t\treturn 0;\n\t\t}\n\t}\n\n\t/**\n\t * Returns the area of the rect.\n\t *\n\t * @returns {Number}\n\t */\n\tgetArea() {\n\t\treturn this.width * this.height;\n\t}\n\n\t/**\n\t * Returns a rect of the web browser viewport.\n\t *\n\t * @returns {module:utils/dom/rect~Rect} A viewport rect.\n\t */\n\tstatic getViewportRect() {\n\t\tconst { innerWidth, innerHeight } = global.window;\n\n\t\treturn new Rect( {\n\t\t\ttop: 0,\n\t\t\tright: innerWidth,\n\t\t\tbottom: innerHeight,\n\t\t\tleft: 0,\n\t\t\twidth: innerWidth,\n\t\t\theight: innerHeight\n\t\t} );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/dom/rect.js\n// module id = 395\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/dom/remove\n */\n\n/**\n * Removes given node from parent.\n *\n * @param {Node} node Node to remove.\n */\nexport default function remove( node ) {\n\tconst parent = node.parentNode;\n\n\tif ( parent ) {\n\t\tparent.removeChild( node );\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/dom/remove.js\n// module id = 396\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/dom/setdatainelement\n */\n\n/* globals HTMLTextAreaElement */\n\n/**\n * Sets data in a given element.\n *\n * @param {HTMLElement} el The element in which the data will be set.\n * @param {String} data The data string.\n */\nexport default function setDataInElement( el, data ) {\n\tif ( el instanceof HTMLTextAreaElement ) {\n\t\tel.value = data;\n\t}\n\n\tel.innerHTML = data;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/dom/setdatainelement.js\n// module id = 397\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/elementreplacer\n */\n\n/**\n * Utility class allowing to hide existing HTML elements or replace them with given ones in a way that doesn't remove\n * the original elements from the DOM.\n */\nexport default class ElementReplacer {\n\tconstructor() {\n\t\t/**\n\t\t * The elements replaced by {@link #replace} and their replacements.\n\t\t *\n\t\t * @private\n\t\t * @member {Array.<Object>}\n\t\t */\n\t\tthis._replacedElements = [];\n\t}\n\n\t/**\n\t * Hides the `element` and, if specified, inserts the the given element next to it.\n\t *\n\t * The effect of this method can be reverted by {@link #restore}.\n\t *\n\t * @param {HTMLElement} element The element to replace.\n\t * @param {HTMLElement} [newElement] The replacement element. If not passed, then the `element` will just be hidden.\n\t */\n\treplace( element, newElement ) {\n\t\tthis._replacedElements.push( { element, newElement } );\n\n\t\telement.style.display = 'none';\n\n\t\tif ( newElement ) {\n\t\t\telement.parentNode.insertBefore( newElement, element.nextSibling );\n\t\t}\n\t}\n\n\t/**\n\t * Restores what {@link #replace} did.\n\t */\n\trestore() {\n\t\tthis._replacedElements.forEach( ( { element, newElement } ) => {\n\t\t\telement.style.display = '';\n\n\t\t\tif ( newElement ) {\n\t\t\t\tnewElement.remove();\n\t\t\t}\n\t\t} );\n\n\t\tthis._replacedElements = [];\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/elementreplacer.js\n// module id = 398\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/* globals navigator:false */\n\n/**\n * @module utils/env\n */\n\nconst userAgent = navigator.userAgent.toLowerCase();\n\n/**\n * A namespace containing environment and browser information.\n *\n * @namespace\n */\nconst env = {\n\t/**\n\t * Indicates that application is running on Macintosh.\n\t *\n\t * @static\n\t * @member {Boolean} module:utils/env~env#mac\n\t */\n\tmac: isMac( userAgent )\n};\n\nexport default env;\n\n/**\n * Checks if User Agent represented by the string is running on Macintosh.\n *\n * @param {String} userAgent **Lowercase** `navigator.userAgent` string.\n * @returns {Boolean} Whether User Agent is running on Macintosh or not.\n */\nexport function isMac( userAgent ) {\n\treturn userAgent.indexOf( 'macintosh' ) > -1;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/env.js\n// module id = 399\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/eventinfo\n */\n\nimport spy from './spy';\n\n/**\n * The event object passed to event callbacks. It is used to provide information about the event as well as a tool to\n * manipulate it.\n */\nexport default class EventInfo {\n\t/**\n\t * @param {Object} source The emitter.\n\t * @param {String} name The event name.\n\t */\n\tconstructor( source, name ) {\n\t\t/**\n\t\t * The object that fired the event.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Object}\n\t\t */\n\t\tthis.source = source;\n\n\t\t/**\n\t\t * The event name.\n\t\t *\n\t\t * @readonly\n\t\t * @member {String}\n\t\t */\n\t\tthis.name = name;\n\n\t\t/**\n\t\t * Path this event has followed. See {@link module:utils/emittermixin~EmitterMixin#delegate}.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Array.<Object>}\n\t\t */\n\t\tthis.path = [];\n\n\t\t// The following methods are defined in the constructor because they must be re-created per instance.\n\n\t\t/**\n\t\t * Stops the event emitter to call further callbacks for this event interaction.\n\t\t *\n\t\t * @method #stop\n\t\t */\n\t\tthis.stop = spy();\n\n\t\t/**\n\t\t * Removes the current callback from future interactions of this event.\n\t\t *\n\t\t * @method #off\n\t\t */\n\t\tthis.off = spy();\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/eventinfo.js\n// module id = 400\n// module chunks = 0","import getNative from './_getNative';\nimport root from './_root';\n\n/* Built-in method references that are verified to be native. */\nvar DataView = getNative(root, 'DataView');\n\nexport default DataView;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_DataView.js\n// module id = 401\n// module chunks = 0","import hashClear from './_hashClear';\nimport hashDelete from './_hashDelete';\nimport hashGet from './_hashGet';\nimport hashHas from './_hashHas';\nimport hashSet from './_hashSet';\n\n/**\n * Creates a hash object.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\nfunction Hash(entries) {\n  var index = -1,\n      length = entries ? entries.length : 0;\n\n  this.clear();\n  while (++index < length) {\n    var entry = entries[index];\n    this.set(entry[0], entry[1]);\n  }\n}\n\n// Add methods to `Hash`.\nHash.prototype.clear = hashClear;\nHash.prototype['delete'] = hashDelete;\nHash.prototype.get = hashGet;\nHash.prototype.has = hashHas;\nHash.prototype.set = hashSet;\n\nexport default Hash;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_Hash.js\n// module id = 402\n// module chunks = 0","import getNative from './_getNative';\nimport root from './_root';\n\n/* Built-in method references that are verified to be native. */\nvar Promise = getNative(root, 'Promise');\n\nexport default Promise;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_Promise.js\n// module id = 403\n// module chunks = 0","import root from './_root';\n\n/** Built-in value references. */\nvar Reflect = root.Reflect;\n\nexport default Reflect;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_Reflect.js\n// module id = 404\n// module chunks = 0","import getNative from './_getNative';\nimport root from './_root';\n\n/* Built-in method references that are verified to be native. */\nvar WeakMap = getNative(root, 'WeakMap');\n\nexport default WeakMap;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_WeakMap.js\n// module id = 405\n// module chunks = 0","/**\n * Adds the key-value `pair` to `map`.\n *\n * @private\n * @param {Object} map The map to modify.\n * @param {Array} pair The key-value pair to add.\n * @returns {Object} Returns `map`.\n */\nfunction addMapEntry(map, pair) {\n  // Don't return `Map#set` because it doesn't return the map instance in IE 11.\n  map.set(pair[0], pair[1]);\n  return map;\n}\n\nexport default addMapEntry;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_addMapEntry.js\n// module id = 406\n// module chunks = 0","/**\n * Adds `value` to `set`.\n *\n * @private\n * @param {Object} set The set to modify.\n * @param {*} value The value to add.\n * @returns {Object} Returns `set`.\n */\nfunction addSetEntry(set, value) {\n  set.add(value);\n  return set;\n}\n\nexport default addSetEntry;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_addSetEntry.js\n// module id = 407\n// module chunks = 0","/**\n * A specialized version of `_.forEach` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array} Returns `array`.\n */\nfunction arrayEach(array, iteratee) {\n  var index = -1,\n      length = array.length;\n\n  while (++index < length) {\n    if (iteratee(array[index], index, array) === false) {\n      break;\n    }\n  }\n  return array;\n}\n\nexport default arrayEach;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_arrayEach.js\n// module id = 408\n// module chunks = 0","/**\n * A specialized version of `_.some` for arrays without support for iteratee\n * shorthands.\n *\n * @private\n * @param {Array} array The array to iterate over.\n * @param {Function} predicate The function invoked per iteration.\n * @returns {boolean} Returns `true` if any element passes the predicate check,\n *  else `false`.\n */\nfunction arraySome(array, predicate) {\n  var index = -1,\n      length = array.length;\n\n  while (++index < length) {\n    if (predicate(array[index], index, array)) {\n      return true;\n    }\n  }\n  return false;\n}\n\nexport default arraySome;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_arraySome.js\n// module id = 409\n// module chunks = 0","import copyObject from './_copyObject';\nimport keys from './keys';\n\n/**\n * The base implementation of `_.assign` without support for multiple sources\n * or `customizer` functions.\n *\n * @private\n * @param {Object} object The destination object.\n * @param {Object} source The source object.\n * @returns {Object} Returns `object`.\n */\nfunction baseAssign(object, source) {\n  return object && copyObject(source, keys(source), object);\n}\n\nexport default baseAssign;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_baseAssign.js\n// module id = 410\n// module chunks = 0","import get from './get';\n\n/**\n * The base implementation of `_.at` without support for individual paths.\n *\n * @private\n * @param {Object} object The object to iterate over.\n * @param {string[]} paths The property paths of elements to pick.\n * @returns {Array} Returns the picked elements.\n */\nfunction baseAt(object, paths) {\n  var index = -1,\n      isNil = object == null,\n      length = paths.length,\n      result = Array(length);\n\n  while (++index < length) {\n    result[index] = isNil ? undefined : get(object, paths[index]);\n  }\n  return result;\n}\n\nexport default baseAt;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_baseAt.js\n// module id = 411\n// module chunks = 0","/**\n * The base implementation of `_.clamp` which doesn't coerce arguments to numbers.\n *\n * @private\n * @param {number} number The number to clamp.\n * @param {number} [lower] The lower bound.\n * @param {number} upper The upper bound.\n * @returns {number} Returns the clamped number.\n */\nfunction baseClamp(number, lower, upper) {\n  if (number === number) {\n    if (upper !== undefined) {\n      number = number <= upper ? number : upper;\n    }\n    if (lower !== undefined) {\n      number = number >= lower ? number : lower;\n    }\n  }\n  return number;\n}\n\nexport default baseClamp;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_baseClamp.js\n// module id = 412\n// module chunks = 0","import isObject from './isObject';\n\n/** Built-in value references. */\nvar objectCreate = Object.create;\n\n/**\n * The base implementation of `_.create` without support for assigning\n * properties to the created object.\n *\n * @private\n * @param {Object} prototype The object to inherit from.\n * @returns {Object} Returns the new object.\n */\nfunction baseCreate(proto) {\n  return isObject(proto) ? objectCreate(proto) : {};\n}\n\nexport default baseCreate;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_baseCreate.js\n// module id = 413\n// module chunks = 0","import toInteger from './toInteger';\nimport toLength from './toLength';\n\n/**\n * The base implementation of `_.fill` without an iteratee call guard.\n *\n * @private\n * @param {Array} array The array to fill.\n * @param {*} value The value to fill `array` with.\n * @param {number} [start=0] The start position.\n * @param {number} [end=array.length] The end position.\n * @returns {Array} Returns `array`.\n */\nfunction baseFill(array, value, start, end) {\n  var length = array.length;\n\n  start = toInteger(start);\n  if (start < 0) {\n    start = -start > length ? 0 : (length + start);\n  }\n  end = (end === undefined || end > length) ? length : toInteger(end);\n  if (end < 0) {\n    end += length;\n  }\n  end = start > end ? 0 : toLength(end);\n  while (start < end) {\n    array[start++] = value;\n  }\n  return array;\n}\n\nexport default baseFill;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_baseFill.js\n// module id = 414\n// module chunks = 0","import arrayPush from './_arrayPush';\nimport isArray from './isArray';\n\n/**\n * The base implementation of `getAllKeys` and `getAllKeysIn` which uses\n * `keysFunc` and `symbolsFunc` to get the enumerable property names and\n * symbols of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Function} keysFunc The function to get the keys of `object`.\n * @param {Function} symbolsFunc The function to get the symbols of `object`.\n * @returns {Array} Returns the array of property names and symbols.\n */\nfunction baseGetAllKeys(object, keysFunc, symbolsFunc) {\n  var result = keysFunc(object);\n  return isArray(object) ? result : arrayPush(result, symbolsFunc(object));\n}\n\nexport default baseGetAllKeys;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_baseGetAllKeys.js\n// module id = 415\n// module chunks = 0","/**\n * The base implementation of `_.hasIn` without support for deep paths.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array|string} key The key to check.\n * @returns {boolean} Returns `true` if `key` exists, else `false`.\n */\nfunction baseHasIn(object, key) {\n  return key in Object(object);\n}\n\nexport default baseHasIn;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_baseHasIn.js\n// module id = 416\n// module chunks = 0","/**\n * This function is like `baseIndexOf` except that it accepts a comparator.\n *\n * @private\n * @param {Array} array The array to search.\n * @param {*} value The value to search for.\n * @param {number} fromIndex The index to search from.\n * @param {Function} comparator The comparator invoked per element.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\nfunction baseIndexOfWith(array, value, fromIndex, comparator) {\n  var index = fromIndex - 1,\n      length = array.length;\n\n  while (++index < length) {\n    if (comparator(array[index], value)) {\n      return index;\n    }\n  }\n  return -1;\n}\n\nexport default baseIndexOfWith;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_baseIndexOfWith.js\n// module id = 417\n// module chunks = 0","import Stack from './_Stack';\nimport equalArrays from './_equalArrays';\nimport equalByTag from './_equalByTag';\nimport equalObjects from './_equalObjects';\nimport getTag from './_getTag';\nimport isArray from './isArray';\nimport isHostObject from './_isHostObject';\nimport isTypedArray from './isTypedArray';\n\n/** Used to compose bitmasks for comparison styles. */\nvar PARTIAL_COMPARE_FLAG = 2;\n\n/** `Object#toString` result references. */\nvar argsTag = '[object Arguments]',\n    arrayTag = '[object Array]',\n    objectTag = '[object Object]';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/**\n * A specialized version of `baseIsEqual` for arrays and objects which performs\n * deep comparisons and tracks traversed objects enabling objects with circular\n * references to be compared.\n *\n * @private\n * @param {Object} object The object to compare.\n * @param {Object} other The other object to compare.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Function} [customizer] The function to customize comparisons.\n * @param {number} [bitmask] The bitmask of comparison flags. See `baseIsEqual`\n *  for more details.\n * @param {Object} [stack] Tracks traversed `object` and `other` objects.\n * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n */\nfunction baseIsEqualDeep(object, other, equalFunc, customizer, bitmask, stack) {\n  var objIsArr = isArray(object),\n      othIsArr = isArray(other),\n      objTag = arrayTag,\n      othTag = arrayTag;\n\n  if (!objIsArr) {\n    objTag = getTag(object);\n    objTag = objTag == argsTag ? objectTag : objTag;\n  }\n  if (!othIsArr) {\n    othTag = getTag(other);\n    othTag = othTag == argsTag ? objectTag : othTag;\n  }\n  var objIsObj = objTag == objectTag && !isHostObject(object),\n      othIsObj = othTag == objectTag && !isHostObject(other),\n      isSameTag = objTag == othTag;\n\n  if (isSameTag && !objIsObj) {\n    stack || (stack = new Stack);\n    return (objIsArr || isTypedArray(object))\n      ? equalArrays(object, other, equalFunc, customizer, bitmask, stack)\n      : equalByTag(object, other, objTag, equalFunc, customizer, bitmask, stack);\n  }\n  if (!(bitmask & PARTIAL_COMPARE_FLAG)) {\n    var objIsWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'),\n        othIsWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__');\n\n    if (objIsWrapped || othIsWrapped) {\n      var objUnwrapped = objIsWrapped ? object.value() : object,\n          othUnwrapped = othIsWrapped ? other.value() : other;\n\n      stack || (stack = new Stack);\n      return equalFunc(objUnwrapped, othUnwrapped, customizer, bitmask, stack);\n    }\n  }\n  if (!isSameTag) {\n    return false;\n  }\n  stack || (stack = new Stack);\n  return equalObjects(object, other, equalFunc, customizer, bitmask, stack);\n}\n\nexport default baseIsEqualDeep;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_baseIsEqualDeep.js\n// module id = 418\n// module chunks = 0","import Stack from './_Stack';\nimport baseIsEqual from './_baseIsEqual';\n\n/** Used to compose bitmasks for comparison styles. */\nvar UNORDERED_COMPARE_FLAG = 1,\n    PARTIAL_COMPARE_FLAG = 2;\n\n/**\n * The base implementation of `_.isMatch` without support for iteratee shorthands.\n *\n * @private\n * @param {Object} object The object to inspect.\n * @param {Object} source The object of property values to match.\n * @param {Array} matchData The property names, values, and compare flags to match.\n * @param {Function} [customizer] The function to customize comparisons.\n * @returns {boolean} Returns `true` if `object` is a match, else `false`.\n */\nfunction baseIsMatch(object, source, matchData, customizer) {\n  var index = matchData.length,\n      length = index,\n      noCustomizer = !customizer;\n\n  if (object == null) {\n    return !length;\n  }\n  object = Object(object);\n  while (index--) {\n    var data = matchData[index];\n    if ((noCustomizer && data[2])\n          ? data[1] !== object[data[0]]\n          : !(data[0] in object)\n        ) {\n      return false;\n    }\n  }\n  while (++index < length) {\n    data = matchData[index];\n    var key = data[0],\n        objValue = object[key],\n        srcValue = data[1];\n\n    if (noCustomizer && data[2]) {\n      if (objValue === undefined && !(key in object)) {\n        return false;\n      }\n    } else {\n      var stack = new Stack;\n      if (customizer) {\n        var result = customizer(objValue, srcValue, key, object, source, stack);\n      }\n      if (!(result === undefined\n            ? baseIsEqual(srcValue, objValue, customizer, UNORDERED_COMPARE_FLAG | PARTIAL_COMPARE_FLAG, stack)\n            : result\n          )) {\n        return false;\n      }\n    }\n  }\n  return true;\n}\n\nexport default baseIsMatch;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_baseIsMatch.js\n// module id = 419\n// module chunks = 0","/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeKeys = Object.keys;\n\n/**\n * The base implementation of `_.keys` which doesn't skip the constructor\n * property of prototypes or treat sparse arrays as dense.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n */\nfunction baseKeys(object) {\n  return nativeKeys(Object(object));\n}\n\nexport default baseKeys;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_baseKeys.js\n// module id = 420\n// module chunks = 0","import Reflect from './_Reflect';\nimport iteratorToArray from './_iteratorToArray';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Built-in value references. */\nvar enumerate = Reflect ? Reflect.enumerate : undefined,\n    propertyIsEnumerable = objectProto.propertyIsEnumerable;\n\n/**\n * The base implementation of `_.keysIn` which doesn't skip the constructor\n * property of prototypes or treat sparse arrays as dense.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n */\nfunction baseKeysIn(object) {\n  object = object == null ? object : Object(object);\n\n  var result = [];\n  for (var key in object) {\n    result.push(key);\n  }\n  return result;\n}\n\n// Fallback for IE < 9 with es6-shim.\nif (enumerate && !propertyIsEnumerable.call({ 'valueOf': 1 }, 'valueOf')) {\n  baseKeysIn = function(object) {\n    return iteratorToArray(enumerate(object));\n  };\n}\n\nexport default baseKeysIn;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_baseKeysIn.js\n// module id = 421\n// module chunks = 0","import baseIsMatch from './_baseIsMatch';\nimport getMatchData from './_getMatchData';\nimport matchesStrictComparable from './_matchesStrictComparable';\n\n/**\n * The base implementation of `_.matches` which doesn't clone `source`.\n *\n * @private\n * @param {Object} source The object of property values to match.\n * @returns {Function} Returns the new spec function.\n */\nfunction baseMatches(source) {\n  var matchData = getMatchData(source);\n  if (matchData.length == 1 && matchData[0][2]) {\n    return matchesStrictComparable(matchData[0][0], matchData[0][1]);\n  }\n  return function(object) {\n    return object === source || baseIsMatch(object, source, matchData);\n  };\n}\n\nexport default baseMatches;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_baseMatches.js\n// module id = 422\n// module chunks = 0","import baseIsEqual from './_baseIsEqual';\nimport get from './get';\nimport hasIn from './hasIn';\nimport isKey from './_isKey';\nimport isStrictComparable from './_isStrictComparable';\nimport matchesStrictComparable from './_matchesStrictComparable';\nimport toKey from './_toKey';\n\n/** Used to compose bitmasks for comparison styles. */\nvar UNORDERED_COMPARE_FLAG = 1,\n    PARTIAL_COMPARE_FLAG = 2;\n\n/**\n * The base implementation of `_.matchesProperty` which doesn't clone `srcValue`.\n *\n * @private\n * @param {string} path The path of the property to get.\n * @param {*} srcValue The value to match.\n * @returns {Function} Returns the new spec function.\n */\nfunction baseMatchesProperty(path, srcValue) {\n  if (isKey(path) && isStrictComparable(srcValue)) {\n    return matchesStrictComparable(toKey(path), srcValue);\n  }\n  return function(object) {\n    var objValue = get(object, path);\n    return (objValue === undefined && objValue === srcValue)\n      ? hasIn(object, path)\n      : baseIsEqual(srcValue, objValue, undefined, UNORDERED_COMPARE_FLAG | PARTIAL_COMPARE_FLAG);\n  };\n}\n\nexport default baseMatchesProperty;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_baseMatchesProperty.js\n// module id = 423\n// module chunks = 0","import isIndex from './_isIndex';\n\n/**\n * The base implementation of `_.nth` which doesn't coerce `n` to an integer.\n *\n * @private\n * @param {Array} array The array to query.\n * @param {number} n The index of the element to return.\n * @returns {*} Returns the nth element of `array`.\n */\nfunction baseNth(array, n) {\n  var length = array.length;\n  if (!length) {\n    return;\n  }\n  n += n < 0 ? length : 0;\n  return isIndex(n, length) ? array[n] : undefined;\n}\n\nexport default baseNth;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_baseNth.js\n// module id = 424\n// module chunks = 0","import baseGet from './_baseGet';\n\n/**\n * A specialized version of `baseProperty` which supports deep paths.\n *\n * @private\n * @param {Array|string} path The path of the property to get.\n * @returns {Function} Returns the new accessor function.\n */\nfunction basePropertyDeep(path) {\n  return function(object) {\n    return baseGet(object, path);\n  };\n}\n\nexport default basePropertyDeep;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_basePropertyDeep.js\n// module id = 425\n// module chunks = 0","import assignValue from './_assignValue';\nimport castPath from './_castPath';\nimport isIndex from './_isIndex';\nimport isKey from './_isKey';\nimport isObject from './isObject';\nimport toKey from './_toKey';\n\n/**\n * The base implementation of `_.set`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array|string} path The path of the property to set.\n * @param {*} value The value to set.\n * @param {Function} [customizer] The function to customize path creation.\n * @returns {Object} Returns `object`.\n */\nfunction baseSet(object, path, value, customizer) {\n  path = isKey(path, object) ? [path] : castPath(path);\n\n  var index = -1,\n      length = path.length,\n      lastIndex = length - 1,\n      nested = object;\n\n  while (nested != null && ++index < length) {\n    var key = toKey(path[index]);\n    if (isObject(nested)) {\n      var newValue = value;\n      if (index != lastIndex) {\n        var objValue = nested[key];\n        newValue = customizer ? customizer(objValue, key, nested) : undefined;\n        if (newValue === undefined) {\n          newValue = objValue == null\n            ? (isIndex(path[index + 1]) ? [] : {})\n            : objValue;\n        }\n      }\n      assignValue(nested, key, newValue);\n    }\n    nested = nested[key];\n  }\n  return object;\n}\n\nexport default baseSet;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_baseSet.js\n// module id = 426\n// module chunks = 0","import arrayMap from './_arrayMap';\n\n/**\n * The base implementation of `_.toPairs` and `_.toPairsIn` which creates an array\n * of key-value pairs for `object` corresponding to the property names of `props`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array} props The property names to get values for.\n * @returns {Object} Returns the key-value pairs.\n */\nfunction baseToPairs(object, props) {\n  return arrayMap(props, function(key) {\n    return [key, object[key]];\n  });\n}\n\nexport default baseToPairs;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_baseToPairs.js\n// module id = 427\n// module chunks = 0","import Symbol from './_Symbol';\nimport isSymbol from './isSymbol';\n\n/** Used as references for various `Number` constants. */\nvar INFINITY = 1 / 0;\n\n/** Used to convert symbols to primitives and strings. */\nvar symbolProto = Symbol ? Symbol.prototype : undefined,\n    symbolToString = symbolProto ? symbolProto.toString : undefined;\n\n/**\n * The base implementation of `_.toString` which doesn't convert nullish\n * values to empty strings.\n *\n * @private\n * @param {*} value The value to process.\n * @returns {string} Returns the string.\n */\nfunction baseToString(value) {\n  // Exit early for strings to avoid a performance hit in some environments.\n  if (typeof value == 'string') {\n    return value;\n  }\n  if (isSymbol(value)) {\n    return symbolToString ? symbolToString.call(value) : '';\n  }\n  var result = (value + '');\n  return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;\n}\n\nexport default baseToString;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_baseToString.js\n// module id = 428\n// module chunks = 0","/**\n * Checks if `value` is a global object.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {null|Object} Returns `value` if it's a global object, else `null`.\n */\nfunction checkGlobal(value) {\n  return (value && value.Object === Object) ? value : null;\n}\n\nexport default checkGlobal;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_checkGlobal.js\n// module id = 429\n// module chunks = 0","/**\n * Creates a clone of  `buffer`.\n *\n * @private\n * @param {Buffer} buffer The buffer to clone.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Buffer} Returns the cloned buffer.\n */\nfunction cloneBuffer(buffer, isDeep) {\n  if (isDeep) {\n    return buffer.slice();\n  }\n  var result = new buffer.constructor(buffer.length);\n  buffer.copy(result);\n  return result;\n}\n\nexport default cloneBuffer;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_cloneBuffer.js\n// module id = 430\n// module chunks = 0","import cloneArrayBuffer from './_cloneArrayBuffer';\n\n/**\n * Creates a clone of `dataView`.\n *\n * @private\n * @param {Object} dataView The data view to clone.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Object} Returns the cloned data view.\n */\nfunction cloneDataView(dataView, isDeep) {\n  var buffer = isDeep ? cloneArrayBuffer(dataView.buffer) : dataView.buffer;\n  return new dataView.constructor(buffer, dataView.byteOffset, dataView.byteLength);\n}\n\nexport default cloneDataView;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_cloneDataView.js\n// module id = 431\n// module chunks = 0","import addMapEntry from './_addMapEntry';\nimport arrayReduce from './_arrayReduce';\nimport mapToArray from './_mapToArray';\n\n/**\n * Creates a clone of `map`.\n *\n * @private\n * @param {Object} map The map to clone.\n * @param {Function} cloneFunc The function to clone values.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Object} Returns the cloned map.\n */\nfunction cloneMap(map, isDeep, cloneFunc) {\n  var array = isDeep ? cloneFunc(mapToArray(map), true) : mapToArray(map);\n  return arrayReduce(array, addMapEntry, new map.constructor);\n}\n\nexport default cloneMap;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_cloneMap.js\n// module id = 432\n// module chunks = 0","/** Used to match `RegExp` flags from their coerced string values. */\nvar reFlags = /\\w*$/;\n\n/**\n * Creates a clone of `regexp`.\n *\n * @private\n * @param {Object} regexp The regexp to clone.\n * @returns {Object} Returns the cloned regexp.\n */\nfunction cloneRegExp(regexp) {\n  var result = new regexp.constructor(regexp.source, reFlags.exec(regexp));\n  result.lastIndex = regexp.lastIndex;\n  return result;\n}\n\nexport default cloneRegExp;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_cloneRegExp.js\n// module id = 433\n// module chunks = 0","import addSetEntry from './_addSetEntry';\nimport arrayReduce from './_arrayReduce';\nimport setToArray from './_setToArray';\n\n/**\n * Creates a clone of `set`.\n *\n * @private\n * @param {Object} set The set to clone.\n * @param {Function} cloneFunc The function to clone values.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Object} Returns the cloned set.\n */\nfunction cloneSet(set, isDeep, cloneFunc) {\n  var array = isDeep ? cloneFunc(setToArray(set), true) : setToArray(set);\n  return arrayReduce(array, addSetEntry, new set.constructor);\n}\n\nexport default cloneSet;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_cloneSet.js\n// module id = 434\n// module chunks = 0","import Symbol from './_Symbol';\n\n/** Used to convert symbols to primitives and strings. */\nvar symbolProto = Symbol ? Symbol.prototype : undefined,\n    symbolValueOf = symbolProto ? symbolProto.valueOf : undefined;\n\n/**\n * Creates a clone of the `symbol` object.\n *\n * @private\n * @param {Object} symbol The symbol object to clone.\n * @returns {Object} Returns the cloned symbol object.\n */\nfunction cloneSymbol(symbol) {\n  return symbolValueOf ? Object(symbolValueOf.call(symbol)) : {};\n}\n\nexport default cloneSymbol;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_cloneSymbol.js\n// module id = 435\n// module chunks = 0","import cloneArrayBuffer from './_cloneArrayBuffer';\n\n/**\n * Creates a clone of `typedArray`.\n *\n * @private\n * @param {Object} typedArray The typed array to clone.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Object} Returns the cloned typed array.\n */\nfunction cloneTypedArray(typedArray, isDeep) {\n  var buffer = isDeep ? cloneArrayBuffer(typedArray.buffer) : typedArray.buffer;\n  return new typedArray.constructor(buffer, typedArray.byteOffset, typedArray.length);\n}\n\nexport default cloneTypedArray;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_cloneTypedArray.js\n// module id = 436\n// module chunks = 0","import isSymbol from './isSymbol';\n\n/**\n * Compares values to sort them in ascending order.\n *\n * @private\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {number} Returns the sort order indicator for `value`.\n */\nfunction compareAscending(value, other) {\n  if (value !== other) {\n    var valIsDefined = value !== undefined,\n        valIsNull = value === null,\n        valIsReflexive = value === value,\n        valIsSymbol = isSymbol(value);\n\n    var othIsDefined = other !== undefined,\n        othIsNull = other === null,\n        othIsReflexive = other === other,\n        othIsSymbol = isSymbol(other);\n\n    if ((!othIsNull && !othIsSymbol && !valIsSymbol && value > other) ||\n        (valIsSymbol && othIsDefined && othIsReflexive && !othIsNull && !othIsSymbol) ||\n        (valIsNull && othIsDefined && othIsReflexive) ||\n        (!valIsDefined && othIsReflexive) ||\n        !valIsReflexive) {\n      return 1;\n    }\n    if ((!valIsNull && !valIsSymbol && !othIsSymbol && value < other) ||\n        (othIsSymbol && valIsDefined && valIsReflexive && !valIsNull && !valIsSymbol) ||\n        (othIsNull && valIsDefined && valIsReflexive) ||\n        (!othIsDefined && valIsReflexive) ||\n        !othIsReflexive) {\n      return -1;\n    }\n  }\n  return 0;\n}\n\nexport default compareAscending;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_compareAscending.js\n// module id = 437\n// module chunks = 0","import copyObject from './_copyObject';\nimport getSymbols from './_getSymbols';\n\n/**\n * Copies own symbol properties of `source` to `object`.\n *\n * @private\n * @param {Object} source The object to copy symbols from.\n * @param {Object} [object={}] The object to copy symbols to.\n * @returns {Object} Returns `object`.\n */\nfunction copySymbols(source, object) {\n  return copyObject(source, getSymbols(source), object);\n}\n\nexport default copySymbols;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_copySymbols.js\n// module id = 438\n// module chunks = 0","import isIterateeCall from './_isIterateeCall';\nimport rest from './rest';\n\n/**\n * Creates a function like `_.assign`.\n *\n * @private\n * @param {Function} assigner The function to assign values.\n * @returns {Function} Returns the new assigner function.\n */\nfunction createAssigner(assigner) {\n  return rest(function(object, sources) {\n    var index = -1,\n        length = sources.length,\n        customizer = length > 1 ? sources[length - 1] : undefined,\n        guard = length > 2 ? sources[2] : undefined;\n\n    customizer = (assigner.length > 3 && typeof customizer == 'function')\n      ? (length--, customizer)\n      : undefined;\n\n    if (guard && isIterateeCall(sources[0], sources[1], guard)) {\n      customizer = length < 3 ? undefined : customizer;\n      length = 1;\n    }\n    object = Object(object);\n    while (++index < length) {\n      var source = sources[index];\n      if (source) {\n        assigner(object, source, index, customizer);\n      }\n    }\n    return object;\n  });\n}\n\nexport default createAssigner;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_createAssigner.js\n// module id = 439\n// module chunks = 0","import Set from './_Set';\nimport noop from './noop';\nimport setToArray from './_setToArray';\n\n/** Used as references for various `Number` constants. */\nvar INFINITY = 1 / 0;\n\n/**\n * Creates a set of `values`.\n *\n * @private\n * @param {Array} values The values to add to the set.\n * @returns {Object} Returns the new set.\n */\nvar createSet = !(Set && (1 / setToArray(new Set([,-0]))[1]) == INFINITY) ? noop : function(values) {\n  return new Set(values);\n};\n\nexport default createSet;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_createSet.js\n// module id = 440\n// module chunks = 0","import baseToPairs from './_baseToPairs';\nimport getTag from './_getTag';\nimport mapToArray from './_mapToArray';\nimport setToPairs from './_setToPairs';\n\n/** `Object#toString` result references. */\nvar mapTag = '[object Map]',\n    setTag = '[object Set]';\n\n/**\n * Creates a `_.toPairs` or `_.toPairsIn` function.\n *\n * @private\n * @param {Function} keysFunc The function to get the keys of a given object.\n * @returns {Function} Returns the new pairs function.\n */\nfunction createToPairs(keysFunc) {\n  return function(object) {\n    var tag = getTag(object);\n    if (tag == mapTag) {\n      return mapToArray(object);\n    }\n    if (tag == setTag) {\n      return setToPairs(object);\n    }\n    return baseToPairs(object, keysFunc(object));\n  };\n}\n\nexport default createToPairs;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_createToPairs.js\n// module id = 441\n// module chunks = 0","import Symbol from './_Symbol';\nimport Uint8Array from './_Uint8Array';\nimport equalArrays from './_equalArrays';\nimport mapToArray from './_mapToArray';\nimport setToArray from './_setToArray';\n\n/** Used to compose bitmasks for comparison styles. */\nvar UNORDERED_COMPARE_FLAG = 1,\n    PARTIAL_COMPARE_FLAG = 2;\n\n/** `Object#toString` result references. */\nvar boolTag = '[object Boolean]',\n    dateTag = '[object Date]',\n    errorTag = '[object Error]',\n    mapTag = '[object Map]',\n    numberTag = '[object Number]',\n    regexpTag = '[object RegExp]',\n    setTag = '[object Set]',\n    stringTag = '[object String]',\n    symbolTag = '[object Symbol]';\n\nvar arrayBufferTag = '[object ArrayBuffer]',\n    dataViewTag = '[object DataView]';\n\n/** Used to convert symbols to primitives and strings. */\nvar symbolProto = Symbol ? Symbol.prototype : undefined,\n    symbolValueOf = symbolProto ? symbolProto.valueOf : undefined;\n\n/**\n * A specialized version of `baseIsEqualDeep` for comparing objects of\n * the same `toStringTag`.\n *\n * **Note:** This function only supports comparing values with tags of\n * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.\n *\n * @private\n * @param {Object} object The object to compare.\n * @param {Object} other The other object to compare.\n * @param {string} tag The `toStringTag` of the objects to compare.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Function} customizer The function to customize comparisons.\n * @param {number} bitmask The bitmask of comparison flags. See `baseIsEqual`\n *  for more details.\n * @param {Object} stack Tracks traversed `object` and `other` objects.\n * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n */\nfunction equalByTag(object, other, tag, equalFunc, customizer, bitmask, stack) {\n  switch (tag) {\n    case dataViewTag:\n      if ((object.byteLength != other.byteLength) ||\n          (object.byteOffset != other.byteOffset)) {\n        return false;\n      }\n      object = object.buffer;\n      other = other.buffer;\n\n    case arrayBufferTag:\n      if ((object.byteLength != other.byteLength) ||\n          !equalFunc(new Uint8Array(object), new Uint8Array(other))) {\n        return false;\n      }\n      return true;\n\n    case boolTag:\n    case dateTag:\n      // Coerce dates and booleans to numbers, dates to milliseconds and\n      // booleans to `1` or `0` treating invalid dates coerced to `NaN` as\n      // not equal.\n      return +object == +other;\n\n    case errorTag:\n      return object.name == other.name && object.message == other.message;\n\n    case numberTag:\n      // Treat `NaN` vs. `NaN` as equal.\n      return (object != +object) ? other != +other : object == +other;\n\n    case regexpTag:\n    case stringTag:\n      // Coerce regexes to strings and treat strings, primitives and objects,\n      // as equal. See http://www.ecma-international.org/ecma-262/6.0/#sec-regexp.prototype.tostring\n      // for more details.\n      return object == (other + '');\n\n    case mapTag:\n      var convert = mapToArray;\n\n    case setTag:\n      var isPartial = bitmask & PARTIAL_COMPARE_FLAG;\n      convert || (convert = setToArray);\n\n      if (object.size != other.size && !isPartial) {\n        return false;\n      }\n      // Assume cyclic values are equal.\n      var stacked = stack.get(object);\n      if (stacked) {\n        return stacked == other;\n      }\n      bitmask |= UNORDERED_COMPARE_FLAG;\n      stack.set(object, other);\n\n      // Recursively compare objects (susceptible to call stack limits).\n      return equalArrays(convert(object), convert(other), equalFunc, customizer, bitmask, stack);\n\n    case symbolTag:\n      if (symbolValueOf) {\n        return symbolValueOf.call(object) == symbolValueOf.call(other);\n      }\n  }\n  return false;\n}\n\nexport default equalByTag;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_equalByTag.js\n// module id = 442\n// module chunks = 0","import baseHas from './_baseHas';\nimport keys from './keys';\n\n/** Used to compose bitmasks for comparison styles. */\nvar PARTIAL_COMPARE_FLAG = 2;\n\n/**\n * A specialized version of `baseIsEqualDeep` for objects with support for\n * partial deep comparisons.\n *\n * @private\n * @param {Object} object The object to compare.\n * @param {Object} other The other object to compare.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Function} customizer The function to customize comparisons.\n * @param {number} bitmask The bitmask of comparison flags. See `baseIsEqual`\n *  for more details.\n * @param {Object} stack Tracks traversed `object` and `other` objects.\n * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n */\nfunction equalObjects(object, other, equalFunc, customizer, bitmask, stack) {\n  var isPartial = bitmask & PARTIAL_COMPARE_FLAG,\n      objProps = keys(object),\n      objLength = objProps.length,\n      othProps = keys(other),\n      othLength = othProps.length;\n\n  if (objLength != othLength && !isPartial) {\n    return false;\n  }\n  var index = objLength;\n  while (index--) {\n    var key = objProps[index];\n    if (!(isPartial ? key in other : baseHas(other, key))) {\n      return false;\n    }\n  }\n  // Assume cyclic values are equal.\n  var stacked = stack.get(object);\n  if (stacked) {\n    return stacked == other;\n  }\n  var result = true;\n  stack.set(object, other);\n\n  var skipCtor = isPartial;\n  while (++index < objLength) {\n    key = objProps[index];\n    var objValue = object[key],\n        othValue = other[key];\n\n    if (customizer) {\n      var compared = isPartial\n        ? customizer(othValue, objValue, key, other, object, stack)\n        : customizer(objValue, othValue, key, object, other, stack);\n    }\n    // Recursively compare objects (susceptible to call stack limits).\n    if (!(compared === undefined\n          ? (objValue === othValue || equalFunc(objValue, othValue, customizer, bitmask, stack))\n          : compared\n        )) {\n      result = false;\n      break;\n    }\n    skipCtor || (skipCtor = key == 'constructor');\n  }\n  if (result && !skipCtor) {\n    var objCtor = object.constructor,\n        othCtor = other.constructor;\n\n    // Non `Object` object instances with different constructors are not equal.\n    if (objCtor != othCtor &&\n        ('constructor' in object && 'constructor' in other) &&\n        !(typeof objCtor == 'function' && objCtor instanceof objCtor &&\n          typeof othCtor == 'function' && othCtor instanceof othCtor)) {\n      result = false;\n    }\n  }\n  stack['delete'](object);\n  return result;\n}\n\nexport default equalObjects;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_equalObjects.js\n// module id = 443\n// module chunks = 0","import baseGetAllKeys from './_baseGetAllKeys';\nimport getSymbols from './_getSymbols';\nimport keys from './keys';\n\n/**\n * Creates an array of own enumerable property names and symbols of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names and symbols.\n */\nfunction getAllKeys(object) {\n  return baseGetAllKeys(object, keys, getSymbols);\n}\n\nexport default getAllKeys;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_getAllKeys.js\n// module id = 444\n// module chunks = 0","import baseProperty from './_baseProperty';\n\n/**\n * Gets the \"length\" property value of `object`.\n *\n * **Note:** This function is used to avoid a\n * [JIT bug](https://bugs.webkit.org/show_bug.cgi?id=142792) that affects\n * Safari on at least iOS 8.1-8.3 ARM64.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {*} Returns the \"length\" value.\n */\nvar getLength = baseProperty('length');\n\nexport default getLength;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_getLength.js\n// module id = 445\n// module chunks = 0","import isStrictComparable from './_isStrictComparable';\nimport toPairs from './toPairs';\n\n/**\n * Gets the property names, values, and compare flags of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the match data of `object`.\n */\nfunction getMatchData(object) {\n  var result = toPairs(object),\n      length = result.length;\n\n  while (length--) {\n    result[length][2] = isStrictComparable(result[length][1]);\n  }\n  return result;\n}\n\nexport default getMatchData;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_getMatchData.js\n// module id = 446\n// module chunks = 0","import castPath from './_castPath';\nimport isArguments from './isArguments';\nimport isArray from './isArray';\nimport isIndex from './_isIndex';\nimport isKey from './_isKey';\nimport isLength from './isLength';\nimport isString from './isString';\nimport toKey from './_toKey';\n\n/**\n * Checks if `path` exists on `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array|string} path The path to check.\n * @param {Function} hasFunc The function to check properties.\n * @returns {boolean} Returns `true` if `path` exists, else `false`.\n */\nfunction hasPath(object, path, hasFunc) {\n  path = isKey(path, object) ? [path] : castPath(path);\n\n  var result,\n      index = -1,\n      length = path.length;\n\n  while (++index < length) {\n    var key = toKey(path[index]);\n    if (!(result = object != null && hasFunc(object, key))) {\n      break;\n    }\n    object = object[key];\n  }\n  if (result) {\n    return result;\n  }\n  var length = object ? object.length : 0;\n  return !!length && isLength(length) && isIndex(key, length) &&\n    (isArray(object) || isString(object) || isArguments(object));\n}\n\nexport default hasPath;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_hasPath.js\n// module id = 447\n// module chunks = 0","import nativeCreate from './_nativeCreate';\n\n/**\n * Removes all key-value entries from the hash.\n *\n * @private\n * @name clear\n * @memberOf Hash\n */\nfunction hashClear() {\n  this.__data__ = nativeCreate ? nativeCreate(null) : {};\n}\n\nexport default hashClear;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_hashClear.js\n// module id = 448\n// module chunks = 0","/**\n * Removes `key` and its value from the hash.\n *\n * @private\n * @name delete\n * @memberOf Hash\n * @param {Object} hash The hash to modify.\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\nfunction hashDelete(key) {\n  return this.has(key) && delete this.__data__[key];\n}\n\nexport default hashDelete;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_hashDelete.js\n// module id = 449\n// module chunks = 0","import nativeCreate from './_nativeCreate';\n\n/** Used to stand-in for `undefined` hash values. */\nvar HASH_UNDEFINED = '__lodash_hash_undefined__';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/**\n * Gets the hash value for `key`.\n *\n * @private\n * @name get\n * @memberOf Hash\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\nfunction hashGet(key) {\n  var data = this.__data__;\n  if (nativeCreate) {\n    var result = data[key];\n    return result === HASH_UNDEFINED ? undefined : result;\n  }\n  return hasOwnProperty.call(data, key) ? data[key] : undefined;\n}\n\nexport default hashGet;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_hashGet.js\n// module id = 450\n// module chunks = 0","import nativeCreate from './_nativeCreate';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/**\n * Checks if a hash value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf Hash\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\nfunction hashHas(key) {\n  var data = this.__data__;\n  return nativeCreate ? data[key] !== undefined : hasOwnProperty.call(data, key);\n}\n\nexport default hashHas;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_hashHas.js\n// module id = 451\n// module chunks = 0","import nativeCreate from './_nativeCreate';\n\n/** Used to stand-in for `undefined` hash values. */\nvar HASH_UNDEFINED = '__lodash_hash_undefined__';\n\n/**\n * Sets the hash `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf Hash\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the hash instance.\n */\nfunction hashSet(key, value) {\n  var data = this.__data__;\n  data[key] = (nativeCreate && value === undefined) ? HASH_UNDEFINED : value;\n  return this;\n}\n\nexport default hashSet;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_hashSet.js\n// module id = 452\n// module chunks = 0","/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/**\n * Initializes an array clone.\n *\n * @private\n * @param {Array} array The array to clone.\n * @returns {Array} Returns the initialized clone.\n */\nfunction initCloneArray(array) {\n  var length = array.length,\n      result = array.constructor(length);\n\n  // Add properties assigned by `RegExp#exec`.\n  if (length && typeof array[0] == 'string' && hasOwnProperty.call(array, 'index')) {\n    result.index = array.index;\n    result.input = array.input;\n  }\n  return result;\n}\n\nexport default initCloneArray;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_initCloneArray.js\n// module id = 453\n// module chunks = 0","import cloneArrayBuffer from './_cloneArrayBuffer';\nimport cloneDataView from './_cloneDataView';\nimport cloneMap from './_cloneMap';\nimport cloneRegExp from './_cloneRegExp';\nimport cloneSet from './_cloneSet';\nimport cloneSymbol from './_cloneSymbol';\nimport cloneTypedArray from './_cloneTypedArray';\n\n/** `Object#toString` result references. */\nvar boolTag = '[object Boolean]',\n    dateTag = '[object Date]',\n    mapTag = '[object Map]',\n    numberTag = '[object Number]',\n    regexpTag = '[object RegExp]',\n    setTag = '[object Set]',\n    stringTag = '[object String]',\n    symbolTag = '[object Symbol]';\n\nvar arrayBufferTag = '[object ArrayBuffer]',\n    dataViewTag = '[object DataView]',\n    float32Tag = '[object Float32Array]',\n    float64Tag = '[object Float64Array]',\n    int8Tag = '[object Int8Array]',\n    int16Tag = '[object Int16Array]',\n    int32Tag = '[object Int32Array]',\n    uint8Tag = '[object Uint8Array]',\n    uint8ClampedTag = '[object Uint8ClampedArray]',\n    uint16Tag = '[object Uint16Array]',\n    uint32Tag = '[object Uint32Array]';\n\n/**\n * Initializes an object clone based on its `toStringTag`.\n *\n * **Note:** This function only supports cloning values with tags of\n * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.\n *\n * @private\n * @param {Object} object The object to clone.\n * @param {string} tag The `toStringTag` of the object to clone.\n * @param {Function} cloneFunc The function to clone values.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Object} Returns the initialized clone.\n */\nfunction initCloneByTag(object, tag, cloneFunc, isDeep) {\n  var Ctor = object.constructor;\n  switch (tag) {\n    case arrayBufferTag:\n      return cloneArrayBuffer(object);\n\n    case boolTag:\n    case dateTag:\n      return new Ctor(+object);\n\n    case dataViewTag:\n      return cloneDataView(object, isDeep);\n\n    case float32Tag: case float64Tag:\n    case int8Tag: case int16Tag: case int32Tag:\n    case uint8Tag: case uint8ClampedTag: case uint16Tag: case uint32Tag:\n      return cloneTypedArray(object, isDeep);\n\n    case mapTag:\n      return cloneMap(object, isDeep, cloneFunc);\n\n    case numberTag:\n    case stringTag:\n      return new Ctor(object);\n\n    case regexpTag:\n      return cloneRegExp(object);\n\n    case setTag:\n      return cloneSet(object, isDeep, cloneFunc);\n\n    case symbolTag:\n      return cloneSymbol(object);\n  }\n}\n\nexport default initCloneByTag;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_initCloneByTag.js\n// module id = 454\n// module chunks = 0","import baseCreate from './_baseCreate';\nimport getPrototype from './_getPrototype';\nimport isPrototype from './_isPrototype';\n\n/**\n * Initializes an object clone.\n *\n * @private\n * @param {Object} object The object to clone.\n * @returns {Object} Returns the initialized clone.\n */\nfunction initCloneObject(object) {\n  return (typeof object.constructor == 'function' && !isPrototype(object))\n    ? baseCreate(getPrototype(object))\n    : {};\n}\n\nexport default initCloneObject;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_initCloneObject.js\n// module id = 455\n// module chunks = 0","import isArguments from './isArguments';\nimport isArray from './isArray';\n\n/**\n * Checks if `value` is a flattenable `arguments` object or array.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is flattenable, else `false`.\n */\nfunction isFlattenable(value) {\n  return isArray(value) || isArguments(value);\n}\n\nexport default isFlattenable;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_isFlattenable.js\n// module id = 456\n// module chunks = 0","/**\n * Checks if `value` is suitable for use as unique object key.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is suitable, else `false`.\n */\nfunction isKeyable(value) {\n  var type = typeof value;\n  return (type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean')\n    ? (value !== '__proto__')\n    : (value === null);\n}\n\nexport default isKeyable;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_isKeyable.js\n// module id = 457\n// module chunks = 0","/**\n * Converts `iterator` to an array.\n *\n * @private\n * @param {Object} iterator The iterator to convert.\n * @returns {Array} Returns the converted array.\n */\nfunction iteratorToArray(iterator) {\n  var data,\n      result = [];\n\n  while (!(data = iterator.next()).done) {\n    result.push(data.value);\n  }\n  return result;\n}\n\nexport default iteratorToArray;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_iteratorToArray.js\n// module id = 458\n// module chunks = 0","/**\n * Removes all key-value entries from the list cache.\n *\n * @private\n * @name clear\n * @memberOf ListCache\n */\nfunction listCacheClear() {\n  this.__data__ = [];\n}\n\nexport default listCacheClear;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_listCacheClear.js\n// module id = 459\n// module chunks = 0","import assocIndexOf from './_assocIndexOf';\n\n/** Used for built-in method references. */\nvar arrayProto = Array.prototype;\n\n/** Built-in value references. */\nvar splice = arrayProto.splice;\n\n/**\n * Removes `key` and its value from the list cache.\n *\n * @private\n * @name delete\n * @memberOf ListCache\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\nfunction listCacheDelete(key) {\n  var data = this.__data__,\n      index = assocIndexOf(data, key);\n\n  if (index < 0) {\n    return false;\n  }\n  var lastIndex = data.length - 1;\n  if (index == lastIndex) {\n    data.pop();\n  } else {\n    splice.call(data, index, 1);\n  }\n  return true;\n}\n\nexport default listCacheDelete;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_listCacheDelete.js\n// module id = 460\n// module chunks = 0","import assocIndexOf from './_assocIndexOf';\n\n/**\n * Gets the list cache value for `key`.\n *\n * @private\n * @name get\n * @memberOf ListCache\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\nfunction listCacheGet(key) {\n  var data = this.__data__,\n      index = assocIndexOf(data, key);\n\n  return index < 0 ? undefined : data[index][1];\n}\n\nexport default listCacheGet;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_listCacheGet.js\n// module id = 461\n// module chunks = 0","import assocIndexOf from './_assocIndexOf';\n\n/**\n * Checks if a list cache value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf ListCache\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\nfunction listCacheHas(key) {\n  return assocIndexOf(this.__data__, key) > -1;\n}\n\nexport default listCacheHas;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_listCacheHas.js\n// module id = 462\n// module chunks = 0","import assocIndexOf from './_assocIndexOf';\n\n/**\n * Sets the list cache `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf ListCache\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the list cache instance.\n */\nfunction listCacheSet(key, value) {\n  var data = this.__data__,\n      index = assocIndexOf(data, key);\n\n  if (index < 0) {\n    data.push([key, value]);\n  } else {\n    data[index][1] = value;\n  }\n  return this;\n}\n\nexport default listCacheSet;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_listCacheSet.js\n// module id = 463\n// module chunks = 0","import Hash from './_Hash';\nimport ListCache from './_ListCache';\nimport Map from './_Map';\n\n/**\n * Removes all key-value entries from the map.\n *\n * @private\n * @name clear\n * @memberOf MapCache\n */\nfunction mapCacheClear() {\n  this.__data__ = {\n    'hash': new Hash,\n    'map': new (Map || ListCache),\n    'string': new Hash\n  };\n}\n\nexport default mapCacheClear;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_mapCacheClear.js\n// module id = 464\n// module chunks = 0","import getMapData from './_getMapData';\n\n/**\n * Removes `key` and its value from the map.\n *\n * @private\n * @name delete\n * @memberOf MapCache\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\nfunction mapCacheDelete(key) {\n  return getMapData(this, key)['delete'](key);\n}\n\nexport default mapCacheDelete;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_mapCacheDelete.js\n// module id = 465\n// module chunks = 0","import getMapData from './_getMapData';\n\n/**\n * Gets the map value for `key`.\n *\n * @private\n * @name get\n * @memberOf MapCache\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\nfunction mapCacheGet(key) {\n  return getMapData(this, key).get(key);\n}\n\nexport default mapCacheGet;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_mapCacheGet.js\n// module id = 466\n// module chunks = 0","import getMapData from './_getMapData';\n\n/**\n * Checks if a map value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf MapCache\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\nfunction mapCacheHas(key) {\n  return getMapData(this, key).has(key);\n}\n\nexport default mapCacheHas;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_mapCacheHas.js\n// module id = 467\n// module chunks = 0","import getMapData from './_getMapData';\n\n/**\n * Sets the map `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf MapCache\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the map cache instance.\n */\nfunction mapCacheSet(key, value) {\n  getMapData(this, key).set(key, value);\n  return this;\n}\n\nexport default mapCacheSet;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_mapCacheSet.js\n// module id = 468\n// module chunks = 0","import baseGet from './_baseGet';\nimport baseSlice from './_baseSlice';\n\n/**\n * Gets the parent value at `path` of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array} path The path to get the parent value of.\n * @returns {*} Returns the parent value.\n */\nfunction parent(object, path) {\n  return path.length == 1 ? object : baseGet(object, baseSlice(path, 0, -1));\n}\n\nexport default parent;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_parent.js\n// module id = 469\n// module chunks = 0","/** Used to stand-in for `undefined` hash values. */\nvar HASH_UNDEFINED = '__lodash_hash_undefined__';\n\n/**\n * Adds `value` to the array cache.\n *\n * @private\n * @name add\n * @memberOf SetCache\n * @alias push\n * @param {*} value The value to cache.\n * @returns {Object} Returns the cache instance.\n */\nfunction setCacheAdd(value) {\n  this.__data__.set(value, HASH_UNDEFINED);\n  return this;\n}\n\nexport default setCacheAdd;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_setCacheAdd.js\n// module id = 470\n// module chunks = 0","/**\n * Checks if `value` is in the array cache.\n *\n * @private\n * @name has\n * @memberOf SetCache\n * @param {*} value The value to search for.\n * @returns {number} Returns `true` if `value` is found, else `false`.\n */\nfunction setCacheHas(value) {\n  return this.__data__.has(value);\n}\n\nexport default setCacheHas;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_setCacheHas.js\n// module id = 471\n// module chunks = 0","/**\n * Converts `set` to its value-value pairs.\n *\n * @private\n * @param {Object} set The set to convert.\n * @returns {Array} Returns the value-value pairs.\n */\nfunction setToPairs(set) {\n  var index = -1,\n      result = Array(set.size);\n\n  set.forEach(function(value) {\n    result[++index] = [value, value];\n  });\n  return result;\n}\n\nexport default setToPairs;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_setToPairs.js\n// module id = 472\n// module chunks = 0","import ListCache from './_ListCache';\n\n/**\n * Removes all key-value entries from the stack.\n *\n * @private\n * @name clear\n * @memberOf Stack\n */\nfunction stackClear() {\n  this.__data__ = new ListCache;\n}\n\nexport default stackClear;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_stackClear.js\n// module id = 473\n// module chunks = 0","/**\n * Removes `key` and its value from the stack.\n *\n * @private\n * @name delete\n * @memberOf Stack\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\nfunction stackDelete(key) {\n  return this.__data__['delete'](key);\n}\n\nexport default stackDelete;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_stackDelete.js\n// module id = 474\n// module chunks = 0","/**\n * Gets the stack value for `key`.\n *\n * @private\n * @name get\n * @memberOf Stack\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\nfunction stackGet(key) {\n  return this.__data__.get(key);\n}\n\nexport default stackGet;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_stackGet.js\n// module id = 475\n// module chunks = 0","/**\n * Checks if a stack value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf Stack\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\nfunction stackHas(key) {\n  return this.__data__.has(key);\n}\n\nexport default stackHas;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_stackHas.js\n// module id = 476\n// module chunks = 0","import ListCache from './_ListCache';\nimport MapCache from './_MapCache';\n\n/** Used as the size to enable large array optimizations. */\nvar LARGE_ARRAY_SIZE = 200;\n\n/**\n * Sets the stack `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf Stack\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the stack cache instance.\n */\nfunction stackSet(key, value) {\n  var cache = this.__data__;\n  if (cache instanceof ListCache && cache.__data__.length == LARGE_ARRAY_SIZE) {\n    cache = this.__data__ = new MapCache(cache.__data__);\n  }\n  cache.set(key, value);\n  return this;\n}\n\nexport default stackSet;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_stackSet.js\n// module id = 477\n// module chunks = 0","import memoize from './memoize';\nimport toString from './toString';\n\n/** Used to match property names within property paths. */\nvar rePropName = /[^.[\\]]+|\\[(?:(-?\\d+(?:\\.\\d+)?)|([\"'])((?:(?!\\2)[^\\\\]|\\\\.)*?)\\2)\\]/g;\n\n/** Used to match backslashes in property paths. */\nvar reEscapeChar = /\\\\(\\\\)?/g;\n\n/**\n * Converts `string` to a property path array.\n *\n * @private\n * @param {string} string The string to convert.\n * @returns {Array} Returns the property path array.\n */\nvar stringToPath = memoize(function(string) {\n  var result = [];\n  toString(string).replace(rePropName, function(match, number, quote, string) {\n    result.push(quote ? string.replace(reEscapeChar, '$1') : (number || match));\n  });\n  return result;\n});\n\nexport default stringToPath;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/_stringToPath.js\n// module id = 478\n// module chunks = 0","import chunk from './chunk';\nimport compact from './compact';\nimport concat from './concat';\nimport difference from './difference';\nimport differenceBy from './differenceBy';\nimport differenceWith from './differenceWith';\nimport drop from './drop';\nimport dropRight from './dropRight';\nimport dropRightWhile from './dropRightWhile';\nimport dropWhile from './dropWhile';\nimport fill from './fill';\nimport findIndex from './findIndex';\nimport findLastIndex from './findLastIndex';\nimport first from './first';\nimport flatten from './flatten';\nimport flattenDeep from './flattenDeep';\nimport flattenDepth from './flattenDepth';\nimport fromPairs from './fromPairs';\nimport head from './head';\nimport indexOf from './indexOf';\nimport initial from './initial';\nimport intersection from './intersection';\nimport intersectionBy from './intersectionBy';\nimport intersectionWith from './intersectionWith';\nimport join from './join';\nimport last from './last';\nimport lastIndexOf from './lastIndexOf';\nimport nth from './nth';\nimport pull from './pull';\nimport pullAll from './pullAll';\nimport pullAllBy from './pullAllBy';\nimport pullAllWith from './pullAllWith';\nimport pullAt from './pullAt';\nimport remove from './remove';\nimport reverse from './reverse';\nimport slice from './slice';\nimport sortedIndex from './sortedIndex';\nimport sortedIndexBy from './sortedIndexBy';\nimport sortedIndexOf from './sortedIndexOf';\nimport sortedLastIndex from './sortedLastIndex';\nimport sortedLastIndexBy from './sortedLastIndexBy';\nimport sortedLastIndexOf from './sortedLastIndexOf';\nimport sortedUniq from './sortedUniq';\nimport sortedUniqBy from './sortedUniqBy';\nimport tail from './tail';\nimport take from './take';\nimport takeRight from './takeRight';\nimport takeRightWhile from './takeRightWhile';\nimport takeWhile from './takeWhile';\nimport union from './union';\nimport unionBy from './unionBy';\nimport unionWith from './unionWith';\nimport uniq from './uniq';\nimport uniqBy from './uniqBy';\nimport uniqWith from './uniqWith';\nimport unzip from './unzip';\nimport unzipWith from './unzipWith';\nimport without from './without';\nimport xor from './xor';\nimport xorBy from './xorBy';\nimport xorWith from './xorWith';\nimport zip from './zip';\nimport zipObject from './zipObject';\nimport zipObjectDeep from './zipObjectDeep';\nimport zipWith from './zipWith';\n\nexport default {\n  chunk, compact, concat, difference, differenceBy,\n  differenceWith, drop, dropRight, dropRightWhile, dropWhile,\n  fill, findIndex, findLastIndex, first, flatten,\n  flattenDeep, flattenDepth, fromPairs, head, indexOf,\n  initial, intersection, intersectionBy, intersectionWith, join,\n  last, lastIndexOf, nth, pull, pullAll,\n  pullAllBy, pullAllWith, pullAt, remove, reverse,\n  slice, sortedIndex, sortedIndexBy, sortedIndexOf, sortedLastIndex,\n  sortedLastIndexBy, sortedLastIndexOf, sortedUniq, sortedUniqBy, tail,\n  take, takeRight, takeRightWhile, takeWhile, union,\n  unionBy, unionWith, uniq, uniqBy, uniqWith,\n  unzip, unzipWith, without, xor, xorBy,\n  xorWith, zip, zipObject, zipObjectDeep, zipWith\n};\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/array.default.js\n// module id = 479\n// module chunks = 0","export { default as chunk } from './chunk';\nexport { default as compact } from './compact';\nexport { default as concat } from './concat';\nexport { default as difference } from './difference';\nexport { default as differenceBy } from './differenceBy';\nexport { default as differenceWith } from './differenceWith';\nexport { default as drop } from './drop';\nexport { default as dropRight } from './dropRight';\nexport { default as dropRightWhile } from './dropRightWhile';\nexport { default as dropWhile } from './dropWhile';\nexport { default as fill } from './fill';\nexport { default as findIndex } from './findIndex';\nexport { default as findLastIndex } from './findLastIndex';\nexport { default as first } from './first';\nexport { default as flatten } from './flatten';\nexport { default as flattenDeep } from './flattenDeep';\nexport { default as flattenDepth } from './flattenDepth';\nexport { default as fromPairs } from './fromPairs';\nexport { default as head } from './head';\nexport { default as indexOf } from './indexOf';\nexport { default as initial } from './initial';\nexport { default as intersection } from './intersection';\nexport { default as intersectionBy } from './intersectionBy';\nexport { default as intersectionWith } from './intersectionWith';\nexport { default as join } from './join';\nexport { default as last } from './last';\nexport { default as lastIndexOf } from './lastIndexOf';\nexport { default as nth } from './nth';\nexport { default as pull } from './pull';\nexport { default as pullAll } from './pullAll';\nexport { default as pullAllBy } from './pullAllBy';\nexport { default as pullAllWith } from './pullAllWith';\nexport { default as pullAt } from './pullAt';\nexport { default as remove } from './remove';\nexport { default as reverse } from './reverse';\nexport { default as slice } from './slice';\nexport { default as sortedIndex } from './sortedIndex';\nexport { default as sortedIndexBy } from './sortedIndexBy';\nexport { default as sortedIndexOf } from './sortedIndexOf';\nexport { default as sortedLastIndex } from './sortedLastIndex';\nexport { default as sortedLastIndexBy } from './sortedLastIndexBy';\nexport { default as sortedLastIndexOf } from './sortedLastIndexOf';\nexport { default as sortedUniq } from './sortedUniq';\nexport { default as sortedUniqBy } from './sortedUniqBy';\nexport { default as tail } from './tail';\nexport { default as take } from './take';\nexport { default as takeRight } from './takeRight';\nexport { default as takeRightWhile } from './takeRightWhile';\nexport { default as takeWhile } from './takeWhile';\nexport { default as union } from './union';\nexport { default as unionBy } from './unionBy';\nexport { default as unionWith } from './unionWith';\nexport { default as uniq } from './uniq';\nexport { default as uniqBy } from './uniqBy';\nexport { default as uniqWith } from './uniqWith';\nexport { default as unzip } from './unzip';\nexport { default as unzipWith } from './unzipWith';\nexport { default as without } from './without';\nexport { default as xor } from './xor';\nexport { default as xorBy } from './xorBy';\nexport { default as xorWith } from './xorWith';\nexport { default as zip } from './zip';\nexport { default as zipObject } from './zipObject';\nexport { default as zipObjectDeep } from './zipObjectDeep';\nexport { default as zipWith } from './zipWith';\nexport { default as default } from './array.default';\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/array.js\n// module id = 480\n// module chunks = 0","import assignValue from './_assignValue';\nimport copyObject from './_copyObject';\nimport createAssigner from './_createAssigner';\nimport isArrayLike from './isArrayLike';\nimport isPrototype from './_isPrototype';\nimport keysIn from './keysIn';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Built-in value references. */\nvar propertyIsEnumerable = objectProto.propertyIsEnumerable;\n\n/** Detect if properties shadowing those on `Object.prototype` are non-enumerable. */\nvar nonEnumShadows = !propertyIsEnumerable.call({ 'valueOf': 1 }, 'valueOf');\n\n/**\n * This method is like `_.assign` except that it iterates over own and\n * inherited source properties.\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @alias extend\n * @category Object\n * @param {Object} object The destination object.\n * @param {...Object} [sources] The source objects.\n * @returns {Object} Returns `object`.\n * @see _.assign\n * @example\n *\n * function Foo() {\n *   this.b = 2;\n * }\n *\n * function Bar() {\n *   this.d = 4;\n * }\n *\n * Foo.prototype.c = 3;\n * Bar.prototype.e = 5;\n *\n * _.assignIn({ 'a': 1 }, new Foo, new Bar);\n * // => { 'a': 1, 'b': 2, 'c': 3, 'd': 4, 'e': 5 }\n */\nvar assignIn = createAssigner(function(object, source) {\n  if (nonEnumShadows || isPrototype(source) || isArrayLike(source)) {\n    copyObject(source, keysIn(source), object);\n    return;\n  }\n  for (var key in source) {\n    assignValue(object, key, source[key]);\n  }\n});\n\nexport default assignIn;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/assignIn.js\n// module id = 481\n// module chunks = 0","import baseClone from './_baseClone';\n\n/**\n * This method is like `_.cloneWith` except that it recursively clones `value`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to recursively clone.\n * @param {Function} [customizer] The function to customize cloning.\n * @returns {*} Returns the deep cloned value.\n * @see _.cloneWith\n * @example\n *\n * function customizer(value) {\n *   if (_.isElement(value)) {\n *     return value.cloneNode(true);\n *   }\n * }\n *\n * var el = _.cloneDeepWith(document.body, customizer);\n *\n * console.log(el === document.body);\n * // => false\n * console.log(el.nodeName);\n * // => 'BODY'\n * console.log(el.childNodes.length);\n * // => 20\n */\nfunction cloneDeepWith(value, customizer) {\n  return baseClone(value, true, true, customizer);\n}\n\nexport default cloneDeepWith;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/cloneDeepWith.js\n// module id = 482\n// module chunks = 0","/**\n * Creates a function that returns `value`.\n *\n * @static\n * @memberOf _\n * @since 2.4.0\n * @category Util\n * @param {*} value The value to return from the new function.\n * @returns {Function} Returns the new constant function.\n * @example\n *\n * var object = { 'user': 'fred' };\n * var getter = _.constant(object);\n *\n * getter() === object;\n * // => true\n */\nfunction constant(value) {\n  return function() {\n    return value;\n  };\n}\n\nexport default constant;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/constant.js\n// module id = 483\n// module chunks = 0","import baseHasIn from './_baseHasIn';\nimport hasPath from './_hasPath';\n\n/**\n * Checks if `path` is a direct or inherited property of `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The object to query.\n * @param {Array|string} path The path to check.\n * @returns {boolean} Returns `true` if `path` exists, else `false`.\n * @example\n *\n * var object = _.create({ 'a': _.create({ 'b': 2 }) });\n *\n * _.hasIn(object, 'a');\n * // => true\n *\n * _.hasIn(object, 'a.b');\n * // => true\n *\n * _.hasIn(object, ['a', 'b']);\n * // => true\n *\n * _.hasIn(object, 'b');\n * // => false\n */\nfunction hasIn(object, path) {\n  return object != null && hasPath(object, path, baseHasIn);\n}\n\nexport default hasIn;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/hasIn.js\n// module id = 484\n// module chunks = 0","import constant from './constant';\nimport root from './_root';\n\n/** Used to determine if values are of the language type `Object`. */\nvar objectTypes = {\n  'function': true,\n  'object': true\n};\n\n/** Detect free variable `exports`. */\nvar freeExports = (objectTypes[typeof exports] && exports && !exports.nodeType)\n  ? exports\n  : undefined;\n\n/** Detect free variable `module`. */\nvar freeModule = (objectTypes[typeof module] && module && !module.nodeType)\n  ? module\n  : undefined;\n\n/** Detect the popular CommonJS extension `module.exports`. */\nvar moduleExports = (freeModule && freeModule.exports === freeExports)\n  ? freeExports\n  : undefined;\n\n/** Built-in value references. */\nvar Buffer = moduleExports ? root.Buffer : undefined;\n\n/**\n * Checks if `value` is a buffer.\n *\n * @static\n * @memberOf _\n * @since 4.3.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a buffer, else `false`.\n * @example\n *\n * _.isBuffer(new Buffer(2));\n * // => true\n *\n * _.isBuffer(new Uint8Array(2));\n * // => false\n */\nvar isBuffer = !Buffer ? constant(false) : function(value) {\n  return value instanceof Buffer;\n};\n\nexport default isBuffer;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/isBuffer.js\n// module id = 485\n// module chunks = 0","import isObjectLike from './isObjectLike';\nimport isPlainObject from './isPlainObject';\n\n/**\n * Checks if `value` is likely a DOM element.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a DOM element,\n *  else `false`.\n * @example\n *\n * _.isElement(document.body);\n * // => true\n *\n * _.isElement('<body>');\n * // => false\n */\nfunction isElement(value) {\n  return !!value && value.nodeType === 1 && isObjectLike(value) && !isPlainObject(value);\n}\n\nexport default isElement;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/isElement.js\n// module id = 486\n// module chunks = 0","import baseIsEqual from './_baseIsEqual';\n\n/**\n * Performs a deep comparison between two values to determine if they are\n * equivalent.\n *\n * **Note:** This method supports comparing arrays, array buffers, booleans,\n * date objects, error objects, maps, numbers, `Object` objects, regexes,\n * sets, strings, symbols, and typed arrays. `Object` objects are compared\n * by their own, not inherited, enumerable properties. Functions and DOM\n * nodes are **not** supported.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if the values are equivalent,\n *  else `false`.\n * @example\n *\n * var object = { 'user': 'fred' };\n * var other = { 'user': 'fred' };\n *\n * _.isEqual(object, other);\n * // => true\n *\n * object === other;\n * // => false\n */\nfunction isEqual(value, other) {\n  return baseIsEqual(value, other);\n}\n\nexport default isEqual;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/isEqual.js\n// module id = 487\n// module chunks = 0","import isLength from './isLength';\nimport isObjectLike from './isObjectLike';\n\n/** `Object#toString` result references. */\nvar argsTag = '[object Arguments]',\n    arrayTag = '[object Array]',\n    boolTag = '[object Boolean]',\n    dateTag = '[object Date]',\n    errorTag = '[object Error]',\n    funcTag = '[object Function]',\n    mapTag = '[object Map]',\n    numberTag = '[object Number]',\n    objectTag = '[object Object]',\n    regexpTag = '[object RegExp]',\n    setTag = '[object Set]',\n    stringTag = '[object String]',\n    weakMapTag = '[object WeakMap]';\n\nvar arrayBufferTag = '[object ArrayBuffer]',\n    dataViewTag = '[object DataView]',\n    float32Tag = '[object Float32Array]',\n    float64Tag = '[object Float64Array]',\n    int8Tag = '[object Int8Array]',\n    int16Tag = '[object Int16Array]',\n    int32Tag = '[object Int32Array]',\n    uint8Tag = '[object Uint8Array]',\n    uint8ClampedTag = '[object Uint8ClampedArray]',\n    uint16Tag = '[object Uint16Array]',\n    uint32Tag = '[object Uint32Array]';\n\n/** Used to identify `toStringTag` values of typed arrays. */\nvar typedArrayTags = {};\ntypedArrayTags[float32Tag] = typedArrayTags[float64Tag] =\ntypedArrayTags[int8Tag] = typedArrayTags[int16Tag] =\ntypedArrayTags[int32Tag] = typedArrayTags[uint8Tag] =\ntypedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] =\ntypedArrayTags[uint32Tag] = true;\ntypedArrayTags[argsTag] = typedArrayTags[arrayTag] =\ntypedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] =\ntypedArrayTags[dataViewTag] = typedArrayTags[dateTag] =\ntypedArrayTags[errorTag] = typedArrayTags[funcTag] =\ntypedArrayTags[mapTag] = typedArrayTags[numberTag] =\ntypedArrayTags[objectTag] = typedArrayTags[regexpTag] =\ntypedArrayTags[setTag] = typedArrayTags[stringTag] =\ntypedArrayTags[weakMapTag] = false;\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/**\n * Used to resolve the\n * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)\n * of values.\n */\nvar objectToString = objectProto.toString;\n\n/**\n * Checks if `value` is classified as a typed array.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is correctly classified,\n *  else `false`.\n * @example\n *\n * _.isTypedArray(new Uint8Array);\n * // => true\n *\n * _.isTypedArray([]);\n * // => false\n */\nfunction isTypedArray(value) {\n  return isObjectLike(value) &&\n    isLength(value.length) && !!typedArrayTags[objectToString.call(value)];\n}\n\nexport default isTypedArray;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/isTypedArray.js\n// module id = 488\n// module chunks = 0","import baseKeysIn from './_baseKeysIn';\nimport indexKeys from './_indexKeys';\nimport isIndex from './_isIndex';\nimport isPrototype from './_isPrototype';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/**\n * Creates an array of the own and inherited enumerable property names of `object`.\n *\n * **Note:** Non-object values are coerced to objects.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n * @example\n *\n * function Foo() {\n *   this.a = 1;\n *   this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.keysIn(new Foo);\n * // => ['a', 'b', 'c'] (iteration order is not guaranteed)\n */\nfunction keysIn(object) {\n  var index = -1,\n      isProto = isPrototype(object),\n      props = baseKeysIn(object),\n      propsLength = props.length,\n      indexes = indexKeys(object),\n      skipIndexes = !!indexes,\n      result = indexes || [],\n      length = result.length;\n\n  while (++index < propsLength) {\n    var key = props[index];\n    if (!(skipIndexes && (key == 'length' || isIndex(key, length))) &&\n        !(key == 'constructor' && (isProto || !hasOwnProperty.call(object, key)))) {\n      result.push(key);\n    }\n  }\n  return result;\n}\n\nexport default keysIn;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/keysIn.js\n// module id = 489\n// module chunks = 0","import MapCache from './_MapCache';\n\n/** Used as the `TypeError` message for \"Functions\" methods. */\nvar FUNC_ERROR_TEXT = 'Expected a function';\n\n/**\n * Creates a function that memoizes the result of `func`. If `resolver` is\n * provided, it determines the cache key for storing the result based on the\n * arguments provided to the memoized function. By default, the first argument\n * provided to the memoized function is used as the map cache key. The `func`\n * is invoked with the `this` binding of the memoized function.\n *\n * **Note:** The cache is exposed as the `cache` property on the memoized\n * function. Its creation may be customized by replacing the `_.memoize.Cache`\n * constructor with one whose instances implement the\n * [`Map`](http://ecma-international.org/ecma-262/6.0/#sec-properties-of-the-map-prototype-object)\n * method interface of `delete`, `get`, `has`, and `set`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to have its output memoized.\n * @param {Function} [resolver] The function to resolve the cache key.\n * @returns {Function} Returns the new memoized function.\n * @example\n *\n * var object = { 'a': 1, 'b': 2 };\n * var other = { 'c': 3, 'd': 4 };\n *\n * var values = _.memoize(_.values);\n * values(object);\n * // => [1, 2]\n *\n * values(other);\n * // => [3, 4]\n *\n * object.a = 2;\n * values(object);\n * // => [1, 2]\n *\n * // Modify the result cache.\n * values.cache.set(object, ['a', 'b']);\n * values(object);\n * // => ['a', 'b']\n *\n * // Replace `_.memoize.Cache`.\n * _.memoize.Cache = WeakMap;\n */\nfunction memoize(func, resolver) {\n  if (typeof func != 'function' || (resolver && typeof resolver != 'function')) {\n    throw new TypeError(FUNC_ERROR_TEXT);\n  }\n  var memoized = function() {\n    var args = arguments,\n        key = resolver ? resolver.apply(this, args) : args[0],\n        cache = memoized.cache;\n\n    if (cache.has(key)) {\n      return cache.get(key);\n    }\n    var result = func.apply(this, args);\n    memoized.cache = cache.set(key, result);\n    return result;\n  };\n  memoized.cache = new (memoize.Cache || MapCache);\n  return memoized;\n}\n\n// Assign cache to `_.memoize`.\nmemoize.Cache = MapCache;\n\nexport default memoize;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/memoize.js\n// module id = 490\n// module chunks = 0","/**\n * A no-operation function that returns `undefined` regardless of the\n * arguments it receives.\n *\n * @static\n * @memberOf _\n * @since 2.3.0\n * @category Util\n * @example\n *\n * var object = { 'user': 'fred' };\n *\n * _.noop(object) === undefined;\n * // => true\n */\nfunction noop() {\n  // No operation performed.\n}\n\nexport default noop;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/noop.js\n// module id = 491\n// module chunks = 0","/**\n * Gets the timestamp of the number of milliseconds that have elapsed since\n * the Unix epoch (1 January 1970 00:00:00 UTC).\n *\n * @static\n * @memberOf _\n * @since 2.4.0\n * @type {Function}\n * @category Date\n * @returns {number} Returns the timestamp.\n * @example\n *\n * _.defer(function(stamp) {\n *   console.log(_.now() - stamp);\n * }, _.now());\n * // => Logs the number of milliseconds it took for the deferred function to be invoked.\n */\nvar now = Date.now;\n\nexport default now;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/now.js\n// module id = 492\n// module chunks = 0","import baseProperty from './_baseProperty';\nimport basePropertyDeep from './_basePropertyDeep';\nimport isKey from './_isKey';\nimport toKey from './_toKey';\n\n/**\n * Creates a function that returns the value at `path` of a given object.\n *\n * @static\n * @memberOf _\n * @since 2.4.0\n * @category Util\n * @param {Array|string} path The path of the property to get.\n * @returns {Function} Returns the new accessor function.\n * @example\n *\n * var objects = [\n *   { 'a': { 'b': 2 } },\n *   { 'a': { 'b': 1 } }\n * ];\n *\n * _.map(objects, _.property('a.b'));\n * // => [2, 1]\n *\n * _.map(_.sortBy(objects, _.property(['a', 'b'])), 'a.b');\n * // => [1, 2]\n */\nfunction property(path) {\n  return isKey(path) ? baseProperty(toKey(path)) : basePropertyDeep(path);\n}\n\nexport default property;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/property.js\n// module id = 493\n// module chunks = 0","import debounce from './debounce';\nimport isObject from './isObject';\n\n/** Used as the `TypeError` message for \"Functions\" methods. */\nvar FUNC_ERROR_TEXT = 'Expected a function';\n\n/**\n * Creates a throttled function that only invokes `func` at most once per\n * every `wait` milliseconds. The throttled function comes with a `cancel`\n * method to cancel delayed `func` invocations and a `flush` method to\n * immediately invoke them. Provide an options object to indicate whether\n * `func` should be invoked on the leading and/or trailing edge of the `wait`\n * timeout. The `func` is invoked with the last arguments provided to the\n * throttled function. Subsequent calls to the throttled function return the\n * result of the last `func` invocation.\n *\n * **Note:** If `leading` and `trailing` options are `true`, `func` is\n * invoked on the trailing edge of the timeout only if the throttled function\n * is invoked more than once during the `wait` timeout.\n *\n * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)\n * for details over the differences between `_.throttle` and `_.debounce`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to throttle.\n * @param {number} [wait=0] The number of milliseconds to throttle invocations to.\n * @param {Object} [options={}] The options object.\n * @param {boolean} [options.leading=true]\n *  Specify invoking on the leading edge of the timeout.\n * @param {boolean} [options.trailing=true]\n *  Specify invoking on the trailing edge of the timeout.\n * @returns {Function} Returns the new throttled function.\n * @example\n *\n * // Avoid excessively updating the position while scrolling.\n * jQuery(window).on('scroll', _.throttle(updatePosition, 100));\n *\n * // Invoke `renewToken` when the click event is fired, but not more than once every 5 minutes.\n * var throttled = _.throttle(renewToken, 300000, { 'trailing': false });\n * jQuery(element).on('click', throttled);\n *\n * // Cancel the trailing throttled invocation.\n * jQuery(window).on('popstate', throttled.cancel);\n */\nfunction throttle(func, wait, options) {\n  var leading = true,\n      trailing = true;\n\n  if (typeof func != 'function') {\n    throw new TypeError(FUNC_ERROR_TEXT);\n  }\n  if (isObject(options)) {\n    leading = 'leading' in options ? !!options.leading : leading;\n    trailing = 'trailing' in options ? !!options.trailing : trailing;\n  }\n  return debounce(func, wait, {\n    'leading': leading,\n    'maxWait': wait,\n    'trailing': trailing\n  });\n}\n\nexport default throttle;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/throttle.js\n// module id = 494\n// module chunks = 0","import toNumber from './toNumber';\n\n/** Used as references for various `Number` constants. */\nvar INFINITY = 1 / 0,\n    MAX_INTEGER = 1.7976931348623157e+308;\n\n/**\n * Converts `value` to a finite number.\n *\n * @static\n * @memberOf _\n * @since 4.12.0\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {number} Returns the converted number.\n * @example\n *\n * _.toFinite(3.2);\n * // => 3.2\n *\n * _.toFinite(Number.MIN_VALUE);\n * // => 5e-324\n *\n * _.toFinite(Infinity);\n * // => 1.7976931348623157e+308\n *\n * _.toFinite('3.2');\n * // => 3.2\n */\nfunction toFinite(value) {\n  if (!value) {\n    return value === 0 ? value : 0;\n  }\n  value = toNumber(value);\n  if (value === INFINITY || value === -INFINITY) {\n    var sign = (value < 0 ? -1 : 1);\n    return sign * MAX_INTEGER;\n  }\n  return value === value ? value : 0;\n}\n\nexport default toFinite;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/toFinite.js\n// module id = 495\n// module chunks = 0","import baseClamp from './_baseClamp';\nimport toInteger from './toInteger';\n\n/** Used as references for the maximum length and index of an array. */\nvar MAX_ARRAY_LENGTH = 4294967295;\n\n/**\n * Converts `value` to an integer suitable for use as the length of an\n * array-like object.\n *\n * **Note:** This method is based on\n * [`ToLength`](http://ecma-international.org/ecma-262/6.0/#sec-tolength).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {number} Returns the converted integer.\n * @example\n *\n * _.toLength(3.2);\n * // => 3\n *\n * _.toLength(Number.MIN_VALUE);\n * // => 0\n *\n * _.toLength(Infinity);\n * // => 4294967295\n *\n * _.toLength('3.2');\n * // => 3\n */\nfunction toLength(value) {\n  return value ? baseClamp(toInteger(value), 0, MAX_ARRAY_LENGTH) : 0;\n}\n\nexport default toLength;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/toLength.js\n// module id = 496\n// module chunks = 0","import createToPairs from './_createToPairs';\nimport keys from './keys';\n\n/**\n * Creates an array of own enumerable string keyed-value pairs for `object`\n * which can be consumed by `_.fromPairs`. If `object` is a map or set, its\n * entries are returned.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @alias entries\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the key-value pairs.\n * @example\n *\n * function Foo() {\n *   this.a = 1;\n *   this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.toPairs(new Foo);\n * // => [['a', 1], ['b', 2]] (iteration order is not guaranteed)\n */\nvar toPairs = createToPairs(keys);\n\nexport default toPairs;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/toPairs.js\n// module id = 497\n// module chunks = 0","import baseToString from './_baseToString';\n\n/**\n * Converts `value` to a string. An empty string is returned for `null`\n * and `undefined` values. The sign of `-0` is preserved.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to process.\n * @returns {string} Returns the string.\n * @example\n *\n * _.toString(null);\n * // => ''\n *\n * _.toString(-0);\n * // => '-0'\n *\n * _.toString([1, 2, 3]);\n * // => '1,2,3'\n */\nfunction toString(value) {\n  return value == null ? '' : baseToString(value);\n}\n\nexport default toString;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/lib/lodash/toString.js\n// module id = 498\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/locale\n */\n\nimport { translate } from './translation-service';\n\n/**\n * Represents the localization services.\n */\nexport default class Locale {\n\t/**\n\t * Creates a new instance of the Locale class.\n\t *\n\t * @param {String} [lang='en'] The language code in [ISO 639-1](https://en.wikipedia.org/wiki/ISO_639-1) format.\n\t */\n\tconstructor( lang ) {\n\t\t/**\n\t\t * The language code in [ISO 639-1](https://en.wikipedia.org/wiki/ISO_639-1) format.\n\t\t *\n\t\t * @readonly\n\t\t * @member {String}\n\t\t */\n\t\tthis.lang = lang || 'en';\n\n\t\t/**\n\t\t * Translates the given string to the {@link #lang}. This method is also availble in {@link module:core/editor/editor~Editor#t} and\n\t\t * {@link module:ui/view~View#t}.\n\t\t *\n\t\t * The strings may contain placeholders (`%<index>`) for values which are passed as the second argument.\n\t\t * `<index>` is the index in the `values` array.\n\t\t *\n\t\t *\t\teditor.t( 'Created file \"%0\" in %1ms.', [ fileName, timeTaken ] );\n\t\t *\n\t\t * This method's context is statically bound to Locale instance,\n\t\t * so it can be called as a function:\n\t\t *\n\t\t *\t\tconst t = this.t;\n\t\t *\t\tt( 'Label' );\n\t\t *\n\t\t * @method #t\n\t\t * @param {String} str The string to translate.\n\t\t * @param {String[]} values Values that should be used to interpolate the string.\n\t\t */\n\t\tthis.t = ( ...args ) => this._t( ...args );\n\t}\n\n\t/**\n\t * Base for the {@link #t} method.\n\t *\n\t * @private\n\t */\n\t_t( str, values ) {\n\t\tlet translatedString = translate( this.lang, str );\n\n\t\tif ( values ) {\n\t\t\ttranslatedString = translatedString.replace( /\\%(\\d+)/g, ( match, index ) => {\n\t\t\t\treturn ( index < values.length ) ? values[ index ] : match;\n\t\t\t} );\n\t\t}\n\n\t\treturn translatedString;\n\t}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/locale.js\n// module id = 499\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/mapsequal\n */\n\n/**\n * Checks whether given {Map}s are equal, that is has same size and same key-value pairs.\n *\n * @returns {Boolean} `true` if given maps are equal, `false` otherwise.\n */\nexport default function mapsEqual( mapA, mapB ) {\n\tif ( mapA.size != mapB.size ) {\n\t\treturn false;\n\t}\n\n\tfor ( let attr of mapA.entries() ) {\n\t\tlet valA = JSON.stringify( attr[ 1 ] );\n\t\tlet valB = JSON.stringify( mapB.get( attr[ 0 ] ) );\n\n\t\tif ( valA !== valB ) {\n\t\t\treturn false;\n\t\t}\n\t}\n\n\treturn true;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/mapsequal.js\n// module id = 500\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/priorities\n */\n\n/**\n * String representing a priority value.\n *\n * @typedef {'highest'|'high'|'normal'|'low'|'lowest'} module:utils/priorities~PriorityString\n */\n\n/**\n * Provides group of constants to use instead of hardcoding numeric priority values.\n *\n * @namespace\n */\nconst priorities = {\n\t/**\n\t * Converts a string with priority name to it's numeric value. If `Number` is given, it just returns it.\n\t *\n\t * @static\n\t * @param {module:utils/priorities~PriorityString|Number} priority Priority to convert.\n\t * @returns {Number} Converted priority.\n\t */\n\tget( priority ) {\n\t\tif ( typeof priority != 'number' ) {\n\t\t\treturn this[ priority ] || this.normal;\n\t\t} else {\n\t\t\treturn priority;\n\t\t}\n\t},\n\n\thighest: 100000,\n\thigh: 1000,\n\tnormal: 0,\n\tlow: -1000,\n\tlowest: -100000\n};\n\nexport default priorities;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/priorities.js\n// module id = 501\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/spy\n */\n\n/**\n * Creates a spy function (ala Sinon.js) that can be used to inspect call to it.\n *\n * The following are the present features:\n *\n * * spy.called: property set to `true` if the function has been called at least once.\n *\n * @returns {Function} The spy function.\n */\nfunction spy() {\n\treturn function spy() {\n\t\tspy.called = true;\n\t};\n}\n\nexport default spy;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/spy.js\n// module id = 502\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2016, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/translation-service\n */\n\nlet dictionaries = {};\n\n/**\n * Adds package translations to existing ones.\n * These translations will later be available for {@link module:utils/translations-service~translate translate}.\n *\n *\t\tadd( 'pl', {\n *\t\t\t'OK': 'OK',\n *\t\t\t'Cancel [context: reject]': 'Anuluj'\n *\t\t} );\n *\n * @param {String} lang Target language.\n * @param {Object.<String, String>} translations Translations which will be added to the dictionary.\n */\nexport function add( lang, translations ) {\n\tdictionaries[ lang ] = dictionaries[ lang ] || {};\n\n\tObject.assign( dictionaries[ lang ], translations );\n}\n\n/**\n * Translates string if the translation of the string was previously {@link module:utils/translations-service~add added}\n * to the dictionary. This happens in a multi-language mode were translation modules are created by the bundler.\n *\n * When no translation is defined in the dictionary or the dictionary doesn't exist this function returns\n * the original string without the `'[context: ]'` (happens in development and single-language modes).\n *\n * In a single-language mode (when values passed to `t()` were replaced with target languange strings) the dictionary\n * is left empty, so this function will return the original strings always.\n *\n *\t\ttranslate( 'pl', 'Cancel [context: reject]' );\n *\n * @param {String} lang Target language.\n * @param {String} translationKey String which is going to be translated.\n * @returns {String} Translated sentence.\n */\nexport function translate( lang, translationKey ) {\n\tif ( !hasTranslation( lang, translationKey ) ) {\n\t\treturn translationKey.replace( / \\[context: [^\\]]+\\]$/, '' ) ;\n\t}\n\n\treturn dictionaries[ lang ][ translationKey ];\n}\n\n// Checks whether the dictionary exists and translaiton in that dictionary exists.\nfunction hasTranslation( lang, translationKey ) {\n\treturn (\n\t\t( lang in dictionaries ) &&\n\t\t( translationKey in dictionaries[ lang ] )\n\t);\n}\n\n/**\n * Clears dictionaries for test purposes.\n *\n * @protected\n */\nexport function _clear() {\n\tdictionaries = {};\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/@ckeditor/ckeditor5-utils/src/translation-service.js\n// module id = 503\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module widget/widget\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport MouseObserver from '@ckeditor/ckeditor5-engine/src/view/observer/mouseobserver';\nimport ModelRange from '@ckeditor/ckeditor5-engine/src/model/range';\nimport ModelSelection from '@ckeditor/ckeditor5-engine/src/model/selection';\nimport ModelElement from '@ckeditor/ckeditor5-engine/src/model/element';\nimport ViewEditableElement from '@ckeditor/ckeditor5-engine/src/view/editableelement';\nimport RootEditableElement from '@ckeditor/ckeditor5-engine/src/view/rooteditableelement';\nimport { isWidget, WIDGET_SELECTED_CLASS_NAME, getLabel } from './utils';\nimport { keyCodes } from '@ckeditor/ckeditor5-utils/src/keyboard';\n\nimport '../theme/theme.scss';\n\n/**\n * The widget plugin.\n * Registers model to view selection converter for editing pipeline. It is hooked after default selection conversion.\n * If converted selection is placed around widget element, selection is marked as fake. Additionally, proper CSS class\n * is added to indicate that widget has been selected.\n * Adds default {@link module:engine/view/document~Document#event:mousedown mousedown} handling on widget elements.\n *\n * @extends module:core/plugin~Plugin.\n */\nexport default class Widget extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get pluginName() {\n\t\treturn 'widget/widget';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tconst viewDocument = this.editor.editing.view;\n\n\t\tlet previouslySelected;\n\n\t\t// Model to view selection converter.\n\t\t// Converts selection placed over widget element to fake selection\n\t\tthis.editor.editing.modelToView.on( 'selection', ( evt, data, consumable, conversionApi ) => {\n\t\t\t// Remove selected class from previously selected widget.\n\t\t\tif ( previouslySelected && previouslySelected.hasClass( WIDGET_SELECTED_CLASS_NAME ) ) {\n\t\t\t\tpreviouslySelected.removeClass( WIDGET_SELECTED_CLASS_NAME );\n\t\t\t}\n\n\t\t\tconst viewSelection = conversionApi.viewSelection;\n\n\t\t\t// Check if widget was clicked or some sub-element.\n\t\t\tconst selectedElement = viewSelection.getSelectedElement();\n\n\t\t\tif ( !selectedElement || !isWidget( selectedElement ) ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tviewSelection.setFake( true, { label: getLabel( selectedElement ) } );\n\t\t\tselectedElement.addClass( WIDGET_SELECTED_CLASS_NAME );\n\t\t\tpreviouslySelected = selectedElement;\n\t\t}, { priority: 'low' } );\n\n\t\t// If mouse down is pressed on widget - create selection over whole widget.\n\t\tviewDocument.addObserver( MouseObserver );\n\t\tthis.listenTo( viewDocument, 'mousedown', ( ...args ) => this._onMousedown( ...args ) );\n\n\t\t// Handle custom keydown behaviour.\n\t\tthis.listenTo( viewDocument, 'keydown', ( ...args ) => this._onKeydown( ...args ), { priority: 'high' } );\n\t}\n\n\t/**\n\t * Handles {@link module:engine/view/document~Document#event:mousedown mousedown} events on widget elements.\n\t *\n\t * @private\n\t * @param {module:utils/eventinfo~EventInfo} eventInfo\n\t * @param {module:engine/view/observer/domeventdata~DomEventData} domEventData\n\t */\n\t_onMousedown( eventInfo, domEventData ) {\n\t\tconst editor = this.editor;\n\t\tconst viewDocument = editor.editing.view;\n\t\tlet element = domEventData.target;\n\n\t\t// Do nothing if inside nested editable.\n\t\tif ( isInsideNestedEditable( element ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// If target is not a widget element - check if one of the ancestors is.\n\t\tif ( !isWidget( element ) ) {\n\t\t\telement = element.findAncestor( isWidget );\n\n\t\t\tif ( !element ) {\n\t\t\t\treturn;\n\t\t\t}\n\t\t}\n\n\t\tdomEventData.preventDefault();\n\n\t\t// Focus editor if is not focused already.\n\t\tif ( !viewDocument.isFocused ) {\n\t\t\tviewDocument.focus();\n\t\t}\n\n\t\t// Create model selection over widget.\n\t\tconst modelElement = editor.editing.mapper.toModelElement( element );\n\n\t\teditor.document.enqueueChanges( ( ) => {\n\t\t\tthis._setSelectionOverElement( modelElement );\n\t\t} );\n\t}\n\n\t/**\n\t * Handles {@link module:engine/view/document~Document#event:keydown keydown} events.\n\t *\n\t * @private\n\t * @param {module:utils/eventinfo~EventInfo} eventInfo\n\t * @param {module:engine/view/observer/domeventdata~DomEventData} domEventData\n\t */\n\t_onKeydown( eventInfo, domEventData  ) {\n\t\tconst keyCode = domEventData.keyCode;\n\t\tconst isForward = keyCode == keyCodes.delete || keyCode == keyCodes.arrowdown || keyCode == keyCodes.arrowright;\n\n\t\t// Checks if delete/backspace or arrow keys were handled and then prevents default event behaviour and stops\n\t\t// event propagation.\n\t\tif ( ( isDeleteKeyCode( keyCode ) && this._handleDelete( isForward ) ) ||\n\t\t\t( isArrowKeyCode( keyCode ) && this._handleArrowKeys( isForward ) ) ) {\n\t\t\tdomEventData.preventDefault();\n\t\t\teventInfo.stop();\n\t\t}\n\t}\n\n\t/**\n\t * Handles delete keys: backspace and delete.\n\t *\n\t * @private\n\t * @param {Boolean} isForward Set to true if delete was performed in forward direction.\n\t * @returns {Boolean|undefined} Returns `true` if keys were handled correctly.\n\t */\n\t_handleDelete( isForward ) {\n\t\tconst modelDocument = this.editor.document;\n\t\tconst modelSelection = modelDocument.selection;\n\n\t\t// Do nothing on non-collapsed selection.\n\t\tif ( !modelSelection.isCollapsed ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst objectElement = this._getObjectElementNextToSelection( isForward );\n\n\t\tif ( objectElement ) {\n\t\t\tmodelDocument.enqueueChanges( () => {\n\t\t\t\t// Remove previous element if empty.\n\t\t\t\tconst previousNode = modelSelection.anchor.parent;\n\n\t\t\t\tif ( previousNode.isEmpty ) {\n\t\t\t\t\tconst batch = modelDocument.batch();\n\t\t\t\t\tbatch.remove( previousNode );\n\t\t\t\t}\n\n\t\t\t\tthis._setSelectionOverElement( objectElement );\n\t\t\t} );\n\n\t\t\treturn true;\n\t\t}\n\t}\n\n\t/**\n\t * Handles arrow keys.\n\t *\n\t * @param {Boolean} isForward Set to true if arrow key should be handled in forward direction.\n\t * @returns {Boolean|undefined} Returns `true` if keys were handled correctly.\n\t */\n\t_handleArrowKeys( isForward ) {\n\t\tconst modelDocument = this.editor.document;\n\t\tconst schema = modelDocument.schema;\n\t\tconst modelSelection = modelDocument.selection;\n\t\tconst objectElement = modelSelection.getSelectedElement();\n\n\t\t// if object element is selected.\n\t\tif ( objectElement && schema.objects.has( objectElement.name ) ) {\n\t\t\tconst position = isForward ? modelSelection.getLastPosition() : modelSelection.getFirstPosition();\n\t\t\tconst newRange = modelDocument.getNearestSelectionRange( position, isForward ? 'forward' : 'backward' );\n\n\t\t\tif ( newRange ) {\n\t\t\t\tmodelDocument.enqueueChanges( () => {\n\t\t\t\t\tmodelSelection.setRanges( [ newRange ] );\n\t\t\t\t} );\n\t\t\t}\n\n\t\t\treturn true;\n\t\t}\n\n\t\t// If selection is next to object element.\n\t\t// Return if not collapsed.\n\t\tif ( !modelSelection.isCollapsed ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst objectElement2 = this._getObjectElementNextToSelection( isForward );\n\n\t\tif ( objectElement2 instanceof ModelElement && modelDocument.schema.objects.has( objectElement2.name ) ) {\n\t\t\tmodelDocument.enqueueChanges( () => {\n\t\t\t\tthis._setSelectionOverElement( objectElement2 );\n\t\t\t} );\n\n\t\t\treturn true;\n\t\t}\n\t}\n\n\t/**\n\t * Sets {@link module:engine/model/selection~Selection document's selection} over given element.\n\t *\n\t * @private\n\t * @param {module:engine/model/element~Element} element\n\t */\n\t_setSelectionOverElement( element ) {\n\t\tthis.editor.document.selection.setRanges( [ ModelRange.createOn( element ) ] );\n\t}\n\n\t/**\n\t * Checks if {@link module:engine/model/element~Element element} placed next to the current\n\t * {@link module:engine/model/selection~Selection model selection} exists and is marked in\n\t * {@link module:engine/model/schema~Schema schema} as `object`.\n\t *\n\t * @private\n\t * @param {Boolean} forward Direction of checking.\n\t * @returns {module:engine/model/element~Element|null}\n\t */\n\t_getObjectElementNextToSelection( forward ) {\n\t\tconst modelDocument = this.editor.document;\n\t\tconst schema = modelDocument.schema;\n\t\tconst modelSelection = modelDocument.selection;\n\t\tconst dataController = this.editor.data;\n\n\t\t// Clone current selection to use it as a probe. We must leave default selection as it is so it can return\n\t\t// to its current state after undo.\n\t\tconst probe = ModelSelection.createFromSelection( modelSelection );\n\t\tdataController.modifySelection( probe, { direction: forward ? 'forward' : 'backward' } );\n\t\tconst objectElement = forward ? probe.focus.nodeBefore : probe.focus.nodeAfter;\n\n\t\tif ( objectElement instanceof ModelElement && schema.objects.has( objectElement.name ) ) {\n\t\t\treturn objectElement;\n\t\t}\n\n\t\treturn null;\n\t}\n}\n\n// Returns 'true' if provided key code represents one of the arrow keys.\n//\n// @param {Number} keyCode\n// @returns {Boolean}\nfunction isArrowKeyCode( keyCode ) {\n\treturn keyCode == keyCodes.arrowright ||\n\t\tkeyCode == keyCodes.arrowleft ||\n\t\tkeyCode == keyCodes.arrowup ||\n\t\tkeyCode == keyCodes.arrowdown;\n}\n\n//Returns 'true' if provided key code represents one of the delete keys: delete or backspace.\n//\n//@param {Number} keyCode\n//@returns {Boolean}\nfunction isDeleteKeyCode( keyCode ) {\n\treturn keyCode == keyCodes.delete || keyCode == keyCodes.backspace;\n}\n\n// Returns `true` when element is a nested editable or is placed inside one.\n//\n// @param {module:engine/view/element~Element}\n// 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0"],"sourceRoot":""}
\ No newline at end of file
diff --git a/build/styles.css b/build/styles.css
new file mode 100644
index 00000000000..3aea300b20f
--- /dev/null
+++ b/build/styles.css
@@ -0,0 +1,6 @@
+/**
+ * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.
+ * For licensing, see LICENSE.md.
+ */
+.ck-hidden{display:none}.ck-reset,.ck-reset_all,.ck-reset_all *,.ck-reset_all a,.ck-reset_all textarea{box-sizing:border-box;width:auto;height:auto;position:static}svg.ck-icon{min-width:20px;min-height:20px;font-size:1em;vertical-align:middle}svg.ck-icon,svg.ck-icon *{color:inherit;cursor:inherit}svg.ck-icon *{fill:currentColor}[data-ck-tooltip]:after,[data-ck-tooltip]:before{visibility:hidden;opacity:0;display:none;position:absolute;z-index:999;pointer-events:none;-webkit-backface-visibility:hidden}[data-ck-tooltip]:after{content:attr(data-ck-tooltip)}[data-ck-tooltip]:before{content:"";width:0;height:0}.ck-button,a.ck-button{display:inline-block;position:relative;-moz-user-select:none;-webkit-user-select:none;-ms-user-select:none}.ck-button:after,.ck-button:before,a.ck-button:after,a.ck-button:before{display:block}.ck-button:hover:after,.ck-button:hover:before,a.ck-button:hover:after,a.ck-button:hover:before{visibility:visible;opacity:1}.ck-button .ck-button__label,.ck-button:focus:not(:hover):after,.ck-button:focus:not(:hover):before,a.ck-button .ck-button__label,a.ck-button:focus:not(:hover):after,a.ck-button:focus:not(:hover):before{display:none}.ck-toolbar__separator{display:inline-block}.ck-toolbar__newline{display:block;clear:left}.ck-dropdown{display:inline-block;position:relative}.ck-dropdown:after{content:"";width:0;height:0;pointer-events:none;z-index:1;position:absolute;top:50%;transform:translateY(-50%)}.ck-dropdown__panel{-webkit-backface-visibility:hidden;display:none;z-index:999;position:absolute;left:0;transform:translateY(100%)}.ck-dropdown__panel-visible{display:inline-block}.ck-label,.ck-list__item{display:block}.cke-voice-label{display:none}.ck-balloon-panel{-moz-user-select:none;-webkit-user-select:none;-ms-user-select:none;display:none;position:absolute;z-index:999}.ck-balloon-panel:after,.ck-balloon-panel:before{content:"";position:absolute}.ck-balloon-panel:before{z-index:1}.ck-balloon-panel:after{z-index:2}.ck-balloon-panel_arrow_s:before,.ck-balloon-panel_arrow_se:before,.ck-balloon-panel_arrow_sw:before{z-index:1}.ck-balloon-panel_arrow_s:after,.ck-balloon-panel_arrow_se:after,.ck-balloon-panel_arrow_sw:after{z-index:2}.ck-balloon-panel_arrow_n:before,.ck-balloon-panel_arrow_ne:before,.ck-balloon-panel_arrow_nw:before{z-index:1}.ck-balloon-panel_arrow_n:after,.ck-balloon-panel_arrow_ne:after,.ck-balloon-panel_arrow_nw:after{z-index:2}.ck-balloon-panel_visible{display:block}.ck-floating-panel{position:absolute;display:none}.ck-floating-panel_active{display:block}.ck-editor .ck-toolbar.ck-toolbar_sticky{position:fixed;top:0}.ck-editor .ck-toolbar.ck-toolbar_sticky.ck-toolbar_sticky_bottom-limit{top:auto;position:absolute}.ck-disabled{opacity:.5}.ck-reset,.ck-reset_all,.ck-reset_all *,.ck-reset_all a,.ck-reset_all textarea{margin:0;padding:0;border:0;background:transparent;text-decoration:none;vertical-align:middle;transition:none}.ck-reset_all,.ck-reset_all *,.ck-reset_all a,.ck-reset_all textarea{border-collapse:collapse;font:normal normal normal 12px Helvetica,Arial,Tahoma,Verdana,Sans-Serif;color:#333;text-align:left;white-space:nowrap;cursor:auto;float:none}.ck-reset_all .ck-rtl *{text-align:right}.ck-reset_all iframe{vertical-align:inherit}.ck-reset_all textarea{white-space:pre-wrap}.ck-reset_all input[type=password],.ck-reset_all input[type=text],.ck-reset_all textarea{cursor:text}.ck-reset_all input[type=password][disabled],.ck-reset_all input[type=text][disabled],.ck-reset_all textarea[disabled]{cursor:default}.ck-reset_all fieldset{padding:10px;border:2px groove #e0dfe3}.ck-reset_all button::-moz-focus-inner{padding:0;border:0}svg.ck-icon{width:1.66667em;height:1.66667em}[data-ck-tooltip]:after,[data-ck-tooltip]:before{left:50%;transition:opacity .2s ease-in-out .2s}[data-ck-tooltip]:after{border-radius:2px;color:#fff;font-size:.7rem;background:#333;padding:.4em .64em}[data-ck-tooltip]:before{border-style:solid}.ck-tooltip_s:after{bottom:-4px;transform:translate(-50%,100%)}.ck-tooltip_s:before{bottom:0;transform:translate(-50%,100%);border-color:transparent transparent #333;border-width:0 5px 5px}.ck-tooltip_n:after{top:-4px;transform:translate(-50%,-100%)}.ck-tooltip_n:before{top:0;transform:translate(-50%,-100%);border-color:#333 transparent transparent;border-width:5px 5px 0}.ck-button,a.ck-button{background:#fff;border:1px solid #bfbfbf;white-space:nowrap;cursor:default;vertical-align:middle;padding:.4em;line-height:1.66667}.ck-button:not(.ck-disabled):focus,.ck-button:not(.ck-disabled):hover,a.ck-button:not(.ck-disabled):focus,a.ck-button:not(.ck-disabled):hover{background:#e6e6e6;border-color:#a6a6a6}.ck-button:not(.ck-disabled):active,a.ck-button:not(.ck-disabled):active{background:#d9d9d9;border-color:#999;box-shadow:inset 0 2px 2px #bfbfbf}.ck-button.ck-rounded-corners,.ck-rounded-corners .ck-button,.ck-rounded-corners a.ck-button,a.ck-button.ck-rounded-corners{border-radius:2px}.ck-button:focus,a.ck-button:focus{outline:none;border:1px solid #6ab5f9;box-shadow:0 0 3px 2px #9bcdfb}.ck-button .ck-icon,a.ck-button .ck-icon{float:left}.ck-button.ck-button_with-text,a.ck-button.ck-button_with-text{padding:.4em .8em}.ck-button.ck-button_with-text .ck-icon,a.ck-button.ck-button_with-text .ck-icon{margin-left:-.4em;margin-right:.4em}.ck-button.ck-button_with-text .ck-button__label,a.ck-button.ck-button_with-text .ck-button__label{display:block}.ck-button.ck-on,a.ck-button.ck-on{background:#f7f7f7;border-color:#b9b9b9}.ck-button.ck-on:not(.ck-disabled):focus,.ck-button.ck-on:not(.ck-disabled):hover,a.ck-button.ck-on:not(.ck-disabled):focus,a.ck-button.ck-on:not(.ck-disabled):hover{background:#dedede;border-color:#a1a1a1}.ck-button.ck-on:not(.ck-disabled):active,a.ck-button.ck-on:not(.ck-disabled):active{background:#d2d2d2;border-color:#949494;box-shadow:inset 0 2px 2px #b9b9b9}.ck-button-action,a.ck-button-action{background:#61b145;border-color:#498534;text-shadow:0 -1px #4e8e37;color:#fff}.ck-button-action:not(.ck-disabled):focus,.ck-button-action:not(.ck-disabled):hover,a.ck-button-action:not(.ck-disabled):focus,a.ck-button-action:not(.ck-disabled):hover{background:#579f3e;border-color:#3f732d}.ck-button-action:not(.ck-disabled):active,a.ck-button-action:not(.ck-disabled):active{background:#52963b;border-color:#3a6a29;box-shadow:inset 0 2px 2px #498534}.ck-button-action:active,.ck-button-action:focus,.ck-button-action:hover,a.ck-button-action:active,a.ck-button-action:focus,a.ck-button-action:hover{text-shadow:0 -1px #3a6a29}.ck-button-bold,a.ck-button-bold{font-weight:700}.ck-button .ck-icon use,.ck-button .ck-icon use *,a.ck-button .ck-icon use,a.ck-button .ck-icon use *{color:inherit}.ck-button .ck-button__label,a.ck-button .ck-button__label{float:left;line-height:inherit;font-size:inherit;font-weight:inherit;color:inherit;cursor:inherit}.ck-toolbar{line-height:1;padding:.4em;border:1px solid #bfbfbf;white-space:normal;-moz-user-select:none;-webkit-user-select:none;-ms-user-select:none}.ck-rounded-corners .ck-toolbar,.ck-toolbar.ck-rounded-corners{border-radius:2px}.ck-toolbar__separator{width:1px;height:2.28em;vertical-align:middle;background:#bfbfbf}.ck-toolbar__newline{height:.4em}.ck-toolbar>*{margin-right:.4em}.ck-toolbar>:last-child{margin-right:0}.ck-dropdown:after{border-style:solid;border-width:.4em .4em 0;border-color:#707070 transparent;right:.8em}.ck-dropdown .ck-button.ck-dropdown__button{padding-right:1.6em}.ck-dropdown .ck-button.ck-dropdown__button .ck-button__label{width:7em;overflow:hidden;text-overflow:ellipsis}.ck-dropdown__panel{border:1px solid #b9b9b9;bottom:1px;background:#fff;box-shadow:0 1px 2px 0 rgba(0,0,0,.2)}.ck-dropdown__panel.ck-rounded-corners,.ck-rounded-corners .ck-dropdown__panel{border-radius:2px}.ck-list{-moz-user-select:none;-webkit-user-select:none;-ms-user-select:none;list-style-type:none;background:#fff}.ck-list.ck-rounded-corners,.ck-rounded-corners .ck-list{border-radius:2px}.ck-list__item{padding:.64em;cursor:default;min-width:12em}.ck-list__item:focus,.ck-list__item:hover{background:#f7f7f7}.ck-list__item:focus{box-shadow:0 0 3px 2px #9bcdfb;position:relative;z-index:1;outline:none}.ck-list__item:last-of-type{border:none}.ck-list__item_active{background:#1a8bf1;color:#fff}.ck-list__item_active:focus,.ck-list__item_active:hover{background:#0e7ee2}.ck-label{font-weight:700}.ck-input-text{box-shadow:inset 2px 2px 3px #e6e6e6;border:1px solid #b9b9b9;padding:.64em;min-width:250px}.ck-input-text.ck-rounded-corners,.ck-rounded-corners .ck-input-text{border-radius:2px}.ck-input-text:focus{outline:none;border:1px solid #6ab5f9;box-shadow:0 0 3px 2px #9bcdfb,inset 2px 2px 3px #e6e6e6}.ck-balloon-panel{box-shadow:0 1px 2px 0 rgba(0,0,0,.2);min-width:50px;min-height:15px;background:#fff;border:1px solid #b9b9b9}.ck-balloon-panel.ck-rounded-corners,.ck-rounded-corners .ck-balloon-panel{border-radius:2px}.ck-balloon-panel:after,.ck-balloon-panel:before{width:0;height:0;border-style:solid}.ck-balloon-panel_arrow_s:after,.ck-balloon-panel_arrow_s:before,.ck-balloon-panel_arrow_se:after,.ck-balloon-panel_arrow_se:before,.ck-balloon-panel_arrow_sw:after,.ck-balloon-panel_arrow_sw:before{border-width:0 10px 15px}.ck-balloon-panel_arrow_s:before,.ck-balloon-panel_arrow_se:before,.ck-balloon-panel_arrow_sw:before{border-color:transparent transparent #b9b9b9}.ck-balloon-panel_arrow_s:after,.ck-balloon-panel_arrow_se:after,.ck-balloon-panel_arrow_sw:after{border-color:transparent transparent #fff;margin-top:2px}.ck-balloon-panel_arrow_n:after,.ck-balloon-panel_arrow_n:before,.ck-balloon-panel_arrow_ne:after,.ck-balloon-panel_arrow_ne:before,.ck-balloon-panel_arrow_nw:after,.ck-balloon-panel_arrow_nw:before{border-width:15px 10px 0}.ck-balloon-panel_arrow_n:before,.ck-balloon-panel_arrow_ne:before,.ck-balloon-panel_arrow_nw:before{border-color:#b9b9b9 transparent transparent}.ck-balloon-panel_arrow_n:after,.ck-balloon-panel_arrow_ne:after,.ck-balloon-panel_arrow_nw:after{border-color:#fff transparent transparent;margin-bottom:2px}.ck-balloon-panel_arrow_s:after,.ck-balloon-panel_arrow_s:before{left:50%;margin-left:-10px;top:-15px}.ck-balloon-panel_arrow_se:after,.ck-balloon-panel_arrow_se:before{left:20px;top:-15px}.ck-balloon-panel_arrow_sw:after,.ck-balloon-panel_arrow_sw:before{right:20px;top:-15px}.ck-balloon-panel_arrow_n:after,.ck-balloon-panel_arrow_n:before{left:50%;margin-left:-10px;bottom:-15px}.ck-balloon-panel_arrow_ne:after,.ck-balloon-panel_arrow_ne:before{left:20px;bottom:-15px}.ck-balloon-panel_arrow_nw:after,.ck-balloon-panel_arrow_nw:before{right:20px;bottom:-15px}.ck-floating-panel{box-shadow:0 1px 2px 0 rgba(0,0,0,.2);border:1px solid #bfbfbf;background:#f7f7f7}.ck-floating-panel.ck-rounded-corners,.ck-rounded-corners .ck-floating-panel{border-radius:2px}.ck-toolbar__container{background:#f7f7f7}.ck-toolbar__container .ck-toolbar{border-radius:0;border:0}.ck-toolbar__container .ck-toolbar .ck-button{border-width:0}.ck-toolbar__container .ck-toolbar .ck-button.ck-disabled,.ck-toolbar__container .ck-toolbar .ck-button:not(:hover):not(:focus):not(.ck-on){background:#f7f7f7}.ck-toolbar__container .ck-toolbar .ck-button.ck-on{background:#dedede;border-color:#a1a1a1}.ck-toolbar__container .ck-toolbar .ck-button.ck-on:not(.ck-disabled):focus,.ck-toolbar__container .ck-toolbar .ck-button.ck-on:not(.ck-disabled):hover{background:#c6c6c6;border-color:#888}.ck-toolbar__container .ck-toolbar .ck-button.ck-on:not(.ck-disabled):active{background:#b9b9b9;border-color:#7c7c7c;box-shadow:inset 0 2px 2px #a1a1a1}.ck-toolbar__container .ck-toolbar .ck-dropdown__button{border-width:1px}.ck-toolbar__container .ck-toolbar .ck-dropdown__button:not(:hover):not(:focus):not(.ck-on){background:#fff}.ck-toolbar__container.ck-balloon-panel_arrow_s:after,.ck-toolbar__container.ck-balloon-panel_arrow_se:after,.ck-toolbar__container.ck-balloon-panel_arrow_sw:after{border-bottom-color:#f7f7f7}.ck-toolbar__container.ck-balloon-panel_arrow_n:after,.ck-toolbar__container.ck-balloon-panel_arrow_ne:after,.ck-toolbar__container.ck-balloon-panel_arrow_nw:after{border-top-color:#f7f7f7}.ck-editor .ck-toolbar.ck-toolbar_sticky{box-shadow:0 1px 2px 0 rgba(0,0,0,.2);border:1px solid #bfbfbf;border-width:0 0 1px;background:#f7f7f7}.ck-editor{position:relative}.ck-editor.ck-rounded-corners,.ck-rounded-corners .ck-editor{border-radius:2px}.ck-editor .ck-editor__top .ck-toolbar{border-radius:0;border-top:0;border-left:0;border-right:0}.ck-editor .ck-editor__top .ck-toolbar .ck-button{border-width:0}.ck-editor .ck-editor__top .ck-toolbar .ck-button.ck-disabled,.ck-editor .ck-editor__top .ck-toolbar .ck-button:not(:hover):not(:focus):not(.ck-on){background:#f7f7f7}.ck-editor .ck-editor__top .ck-toolbar .ck-button.ck-on{background:#dedede;border-color:#a1a1a1}.ck-editor .ck-editor__top .ck-toolbar .ck-button.ck-on:not(.ck-disabled):focus,.ck-editor .ck-editor__top .ck-toolbar .ck-button.ck-on:not(.ck-disabled):hover{background:#c6c6c6;border-color:#888}.ck-editor .ck-editor__top .ck-toolbar .ck-button.ck-on:not(.ck-disabled):active{background:#b9b9b9;border-color:#7c7c7c;box-shadow:inset 0 2px 2px #a1a1a1}.ck-editor .ck-editor__top .ck-toolbar .ck-dropdown__button{border-width:1px}.ck-editor .ck-editor__main,.ck-editor .ck-editor__top .ck-toolbar .ck-dropdown__button:not(:hover):not(:focus):not(.ck-on){background:#fff}.ck-editor .ck-editor__bottom{border-bottom:0;border-left:0;border-right:0;padding:.8em}.ck-editor .ck-editor__editable.ck-focused{outline:1px solid #6ab5f9;box-shadow:inset 2px 2px 3px #e6e6e6}.ck-editor .ck-editor__editable_inline{overflow:auto;padding:0 .8em}.ck-editor,.ck-editor-bottom{background:#f7f7f7;border:1px solid #b9b9b9}blockquote{border-left:5px solid #ccc;padding-left:20px;margin-left:0;font-style:italic}.ck-heading_heading1{font-size:1.5em}.ck-heading_heading2{font-size:1.3em}.ck-heading_heading3{font-size:1.1em}[class*=ck-heading_]{line-height:21.6px;padding:9.6px}[class*=ck-heading_heading]{font-weight:700}.ck-dropdown.ck-heading-dropdown .ck-dropdown__button .ck-button__label{width:8em}.ck-disabled{opacity:.5}.ck-widget{margin:.8em 0;padding:0}.ck-widget.ck-widget_selected,.ck-widget.ck-widget_selected:hover{outline:3px solid #6ab5f9}.ck-editor__editable.ck-blurred .ck-widget.ck-widget_selected{outline:3px solid #ddd}.ck-widget:hover{outline:3px solid #ffd25c}.ck-widget .ck-editable.ck-editable_focused,.ck-widget .ck-editable:focus{outline:1px solid #6ab5f9;box-shadow:inset 2px 2px 3px #e6e6e6;background-color:#fff}.cke-text-alternative-form{padding:1.2em;overflow:hidden}.cke-text-alternative-form .ck-label{margin-bottom:.4em}.cke-text-alternative-form__actions{clear:both;padding-top:1.2em}.cke-text-alternative-form__actions .ck-button{float:right}.cke-text-alternative-form__actions .ck-button+.ck-button{margin-right:.64em}.cke-text-alternative-form__actions .ck-button+.ck-button+.ck-button{float:left}.ck-editor__editable .image{text-align:center;clear:both}.ck-editor__editable .image.image-style-side{float:right;margin-left:.8em;max-width:50%}.ck-editor__editable .image>img{display:block;margin:0 auto;max-width:100%}.ck-placeholder:before{content:attr(data-placeholder);cursor:text;color:#c2c2c2}.ck-editor__editable .image>figcaption{background-color:#f7f7f7;padding:.8em;font-size:.75rem;color:#858585;outline-offset:-1px}.ck-link-form{padding:1.2em;overflow:hidden}.ck-link-form .ck-label{margin-bottom:.4em}.ck-link-form__actions{clear:both;padding-top:1.2em}.ck-link-form__actions .ck-button{float:right}.ck-link-form__actions .ck-button+.ck-button{margin-right:.64em}.ck-link-form__actions .ck-button+.ck-button+.ck-button{float:left}
+/*# sourceMappingURL=styles.css.map*/
\ No newline at end of file
diff --git a/build/styles.css.map b/build/styles.css.map
new file mode 100644
index 00000000000..d8dd896ffcb
--- /dev/null
+++ b/build/styles.css.map
@@ -0,0 +1 @@
+{"version":3,"sources":[],"names":[],"mappings":"","file":"styles.css","sourceRoot":""}
\ No newline at end of file
diff --git a/index.html b/index.html
index 637f64e8eac..30930fd36c1 100644
--- a/index.html
+++ b/index.html
@@ -1,12 +1,12 @@
 <!DOCTYPE html>
 <!--
-Copyright (c) 2003-2016, CKSource - Frederico Knabben. All rights reserved.
+Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.
 For licensing, see LICENSE.md or http://ckeditor.com/license
 -->
 <html lang="en">
 <head>
 	<meta charset="utf-8">
-	<title>CKEditor&nbsp;5 Developer Preview (v0.8.0)</title>
+	<title>CKEditor&nbsp;5 Developer Preview (v0.9.0)</title>
 	<!-- Hotjar Tracking Code for https://ckeditor5.github.io -->
 	<script>
 		(function(h,o,t,j,a,r){
@@ -18,7 +18,8 @@
 			a.appendChild(r);
 		})(window,document,'//static.hotjar.com/c/hotjar-','.js?sv=');
 	</script>
-	<link rel="stylesheet" href="css/styles.css?0.8.0">
+	<link rel="stylesheet" href="css/styles.css?0.9.0">
+	<link rel="stylesheet" href="build/styles.css?0.9.0">
 </head>
 <body>
 	<!-- Google Tag Manager -->
@@ -35,7 +36,7 @@
 		<div class="header__nav__wrapper">
 			<div class="header__nav__inner">
 				<nav class="header__nav__inner_left">
-					<a href="/" title="CKEditor 5 Developer Preview (v0.8.0)"><img src="img/logo.svg" alt="CKEditor 5" /></a>
+					<a href="/" title="CKEditor 5 Developer Preview (v0.9.0)"><img src="img/logo.svg" alt="CKEditor 5" /></a>
 				</nav>
 				<nav class="header__nav__inner_right">
 					<a href="https://github.com/ckeditor/ckeditor5" title="See Project GitHub Page"><img src="img/gh.svg" alt="GitHub" />GitHub</a>
@@ -45,21 +46,25 @@
 			</div>
 		</div>
 
-		<h1>CKEditor&nbsp;5 Developer Preview (v0.8.0)</h1>
+		<h1>CKEditor&nbsp;5 Developer Preview (v0.9.0)</h1>
 	</header>
 
 	<main>
 		<div id="editor">
-			<h2>About CKEditor&nbsp;5, v0.8.0</h2>
+			<h2>About CKEditor&nbsp;5, v0.9.0</h2>
 
-			<p>This is the <a href="https://github.com/ckeditor/ckeditor5-design/issues/175">8th developer preview</a> of <a href="https://ckeditor5.github.io">CKEditor&nbsp;5</a>.</p>
+			<p>This is the <a href="TODO">9th developer preview</a> of <a href="https://ckeditor5.github.io">CKEditor&nbsp;5</a>.</p>
 
 			<figure class="image">
 				<img src="img/sample.jpg" alt="Autumn fields" />
-				<figcaption><b>BREAKING NEWS</b>: We'll be ready before summer.</figcaption>
+				<figcaption><strong>BREAKING NEWS</strong>: We'll be ready before summer.</figcaption>
 			</figure>
 
-			<p>After more than 2 years of building the next generation editor from scratch and closing over 1050 tickets, we created a highly <strong>extensible and flexible architecture</strong> which consists of an <strong>amazing editing framework</strong> and <strong>editing solutions</strong> that will be built on top of it.</p>
+			<p>After nearly 3 years of building the next generation editor from scratch and closing over 1170 tickets, we created a highly <strong>extensible and flexible architecture</strong> which consists of an <strong>amazing editing framework</strong> and <strong>editing solutions</strong> that will be built on top of it.</p>
+
+			<p>We explained this design choice in <a href="https://medium.com/content-uneditable/ckeditor-5-the-future-of-rich-text-editing-2b9300f9df2c">&ldquo;CKEditor 5: The future of rich text editing&ldquo;</a>:</p>
+
+			<blockquote><p>(…) we are changing our approach with CKEditor 5. We will no longer have only two solutions available, instead CKEditor will be seen as a framework for editing solutions. At the same time, we will be developing several out-of-the-box solutions based on it, which will be available to use in many different contexts. It will be a real “one size fits all” approach, from little requirements, to super advanced full featured applications.</p></blockquote>
 
 			<h3>Notes</h3>
 
@@ -76,6 +81,15 @@ <h3>Notes</h3>
 
 		<section id="changelog">
 			<div id="changelog__timeline">
+				<section>
+					<h2>v0.9.0</h2>
+					<time datetime="2017-04-05T17:58:27Z">Apr 5, 2017</time>
+					<p>
+						Nested lists, block quotes, caption placeholders, heading feature and stability improvements.</br />
+						Find out more in the <a href="TODO">&ldquo;9th developer preview of CKEditor&nbsp;5 available&rdquo;</a> blog post.
+					</p>
+				</section>
+
 				<section>
 					<h2>v0.8.0</h2>
 					<time datetime="2017-03-06T17:52:24Z">Mar 6, 2017</time>
@@ -170,6 +184,6 @@ <h2>v0.1.0</h2>
 		<p class="copy">Copyright &copy; 2003-2017, <a href="http://cksource.com">CKSource</a> &ndash; Frederico Knabben.
 			All rights reserved.</p>
 	</footer>
-	<script src="js/app.bundle.js?0.8.0"></script>
+	<script src="build/app.js?0.9.0"></script>
 </body>
 </html>
diff --git a/js/app.bundle.js b/js/app.bundle.js
deleted file mode 100644
index 3b6c8502777..00000000000
--- a/js/app.bundle.js
+++ /dev/null
@@ -1,237 +0,0 @@
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- * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.
- * For licensing, see LICENSE.md.
- */
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-                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.
-                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.
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-                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.
-                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */
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- * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.
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- * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.
- * For licensing, see LICENSE.md.
- */
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o=Object.getOwnPropertyDescriptor(t,n);if(void 0===o){var i=Object.getPrototypeOf(t);return null===i?void 0:e(i,n,r)}if("value"in o)return o.value;var a=o.get;if(void 0!==a)return a.call(r)},s=n(293),f=r(s),c=n(161),d=r(c),h=n(296),p=r(h),v=n(297),y=r(v),b=n(399),_=r(b);n(521);/**
-                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.
-                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.
-                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */
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- * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.
- * For licensing, see LICENSE.md.
- */
-function o(e,t){var n=arguments.length>2&&void 0!==arguments[2]?arguments[2]:{};if(!e.isCollapsed){var r=e.getFirstRange(),o=r.start,u=s.default.createFromPosition(r.end);if(r.start.isTouching(r.end)||t.remove(r),n.merge&&i(t,o,u),e.collapse(o),a(t.document,o)){var l=new h.default("paragraph");t.insert(o,l),e.collapse(l)}u.detach()}}function i(e,t,n){var r=n.path,o=Math.min(t.path.length-1,r.length-1),i=(0,v.default)(t.path,r);if("number"==typeof i)for(;i<o;i++){var a=t.path.slice(0,i);a.push(t.path[i]+1);var l=new c.default(n.root,a),s=l.nodeBefore,f=l.nodeAfter;if(!u(s)||!u(f))return;f.childCount>0?e.merge(l):e.remove(f)}}function a(e,t){var n=e.schema.check({name:"$text",inside:t}),r=e.schema.check({name:"paragraph",inside:t});return!n&&r}function u(e){var t=e.document.schema;return!t.objects.has(e.name)&&!t.limits.has(e.name)}Object.defineProperty(t,"__esModule",{value:!0}),t.default=o;var l=n(165),s=r(l),f=n(1),c=r(f),d=n(5),h=r(d),p=n(48),v=r(p)},function(e,t,n){"use strict";function r(e){return e&&e.__esModule?e:{default:e}}function o(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}Object.defineProperty(t,"__esModule",{value:!0});var i=function(){function e(e,t){for(var n=0;n<t.length;n++){var r=t[n];r.enumerable=r.enumerable||!1,r.configurable=!0,"value"in r&&(r.writable=!0),Object.defineProperty(e,r.key,r)}}return function(t,n,r){return n&&e(t.prototype,n),r&&e(t,r),t}}(),a=n(320),u=r(a),l=n(158),s=r(l),f=n(160),c=r(f),d=n(101),h=n(305),p=n(159),v=n(8),y=r(v),b=function(){function e(t){var n=this;o(this,e),this.model=t,this.view=new u.default,this.mapper=new s.default,this.modelToView=new c.default(this.model,{mapper:this.mapper,viewSelection:this.view.selection}),this._listener=Object.create(y.default),this._listener.listenTo(this.model,"change",function(e,t,r){n.modelToView.convertChange(t,r)},{priority:"low"}),this._listener.listenTo(this.model,"changesDone",function(){var e=n.model.selection;n.modelToView.convertSelection(e),n.view.render()},{priority:"low"}),this._listener.listenTo(this.model.markers,"add",function(e,t){n.modelToView.convertMarker("addMarker",t.name,t.getRange())}),this._listener.listenTo(this.model.markers,"remove",function(e,t){n.modelToView.convertMarker("removeMarker",t.name,t.getRange())}),this._listener.listenTo(this.view,"selectionChange",(0,h.convertSelectionChange)(this.model,this.mapper)),this.modelToView.on("insert:$text",(0,d.insertText)(),{priority:"lowest"}),this.modelToView.on("remove",(0,d.remove)(),{priority:"low"}),this.modelToView.on("selection",(0,p.clearAttributes)(),{priority:"low"}),this.modelToView.on("selection",(0,p.clearFakeSelection)(),{priority:"low"}),this.modelToView.on("selection",(0,p.convertRangeSelection)(),{priority:"low"}),this.modelToView.on("selection",(0,p.convertCollapsedSelection)(),{priority:"low"})}return i(e,[{key:"createRoot",value:function(e){var t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:"main",n=this.view.createRoot(e,t),r=this.model.getRoot(t);return this.mapper.bindElements(r,n),n}},{key:"destroy",value:function(){this.view.destroy(),this._listener.stopListening()}}]),e}();t.default=b},function(e,t,n){"use strict";function r(e){return e&&e.__esModule?e:{default:e}}function o(e){var t=new u.default,n=e.getFirstRange();if(!n||n.isCollapsed)return t;var r=n.start.root,o=n.start.getCommonPath(n.end),a=r.getNodeByPath(o),l=void 0;l=n.start.parent==n.end.parent?n:s.default.createFromParentsAndOffsets(a,n.start.path[o.length],a,n.end.path[o.length]+1);var f=l.end.offset-l.start.offset,d=!0,p=!1,v=void 0;try{for(var y,b=l.getItems({shallow:!0})[Symbol.iterator]();!(d=(y=b.next()).done);d=!0){var _=y.value;_.is("textProxy")?t.appendChildren(new h.default(_.data,_.getAttributes())):t.appendChildren(_.clone(!0))}}catch(e){p=!0,v=e}finally{try{!d&&b.return&&b.return()}finally{if(p)throw v}}if(l!=n){var m=n._getTransformedByMove(l.start,c.default.createAt(t,0),f)[0],g=new s.default(c.default.createAt(t),m.start),w=new s.default(m.end,c.default.createAt(t,"end"));i(w),i(g)}return t}/**
- * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.
- * For licensing, see LICENSE.md.
- */
-function i(e){var t=[];Array.from(e.getItems({direction:"backward"})).map(function(e){return s.default.createOn(e)}).filter(function(t){var n=(t.start.isAfter(e.start)||t.start.isEqual(e.start))&&(t.end.isBefore(e.end)||t.end.isEqual(e.end));return n}).forEach(function(e){t.push(e.start.parent),(0,p.remove)(e)}),t.forEach(function(e){for(var t=e;t.parent&&t.isEmpty;){var n=s.default.createOn(t);t=t.parent,(0,p.remove)(n)}})}Object.defineProperty(t,"__esModule",{value:!0}),t.default=o;var a=n(67),u=r(a),l=n(3),s=r(l),f=n(1),c=r(f),d=n(23),h=r(d),p=n(28)},function(e,t,n){"use strict";function r(e){return e&&e.__esModule?e:{default:e}}function o(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}function i(e,t,n,r){r||(r=e.model.batch()),n.isCollapsed||e.deleteContent(n,r,{merge:!0});var o=new b(e,r,n.anchor);o.handleNodes(t.getChildren(),{isFirst:!0,isLast:!0});var i=o.getSelectionRange();i?n.setRanges([i]):y.default.warn("insertcontent-no-range: Cannot determine a proper selection range after insertion.")}Object.defineProperty(t,"__esModule",{value:!0});var a=function(){function e(e,t){for(var n=0;n<t.length;n++){var r=t[n];r.enumerable=r.enumerable||!1,r.configurable=!0,"value"in r&&(r.writable=!0),Object.defineProperty(e,r.key,r)}}return function(t,n,r){return n&&e(t.prototype,n),r&&e(t,r),t}}();/**
-                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.
-                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.
-                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */
-t.default=i;var u=n(1),l=r(u),s=n(165),f=r(s),c=n(5),d=r(c),h=n(3),p=r(h),v=n(54),y=r(v),b=function(){function e(t,n,r){o(this,e),this.dataController=t,this.batch=n,this.position=r,this.canMergeWith=new Set([this.position.parent]),this.schema=t.model.schema}return a(e,[{key:"handleNodes",value:function(e,t){e=Array.from(e);for(var n=0;n<e.length;n++){var r=e[n].clone();this._handleNode(r,{isFirst:0===n&&t.isFirst,isLast:n===e.length-1&&t.isLast})}}},{key:"getSelectionRange",value:function(){return this.nodeToSelect?p.default.createOn(this.nodeToSelect):this.dataController.model.getNearestSelectionRange(this.position)}},{key:"_handleNode",value:function(e,t){if(this._checkIsObject(e))return void this._handleObject(e,t);var n=this._checkAndSplitToAllowedPosition(e,t);return n?(this._insert(e),void this._mergeSiblingsOf(e,t)):void this._handleDisallowedNode(e,t)}},{key:"_handleObject",value:function(e,t){this._checkAndSplitToAllowedPosition(e)?this._insert(e):this._tryAutoparagraphing(e,t)}},{key:"_handleDisallowedNode",value:function(e,t){e.is("element")?this.handleNodes(e.getChildren(),t):this._tryAutoparagraphing(e,t)}},{key:"_insert",value:function(e){if(!this._checkIsAllowed(e,[this.position.parent]))return void y.default.error("insertcontent-wrong-position: The node cannot be inserted on the given position.",{node:e,position:this.position});var t=f.default.createFromPosition(this.position);this.batch.insert(this.position,e),this.position=l.default.createFromPosition(t),t.detach(),this._checkIsObject(e)&&!this.schema.check({name:"$text",inside:[this.position.parent]})?this.nodeToSelect=e:this.nodeToSelect=null}},{key:"_mergeSiblingsOf",value:function(e,t){if(e instanceof d.default){var n=t.isFirst&&e.previousSibling instanceof d.default&&this.canMergeWith.has(e.previousSibling),r=t.isLast&&e.nextSibling instanceof d.default&&this.canMergeWith.has(e.nextSibling),o=f.default.createBefore(e),i=f.default.createAfter(e);if(n){var a=f.default.createFromPosition(this.position);this.batch.merge(o),this.position=l.default.createFromPosition(a),a.detach()}if(r){var u=void 0;this.position.isEqual(i)||y.default.error("insertcontent-wrong-position-on-merge: The insertion position should equal the merge position"),this.position=l.default.createAt(i.nodeBefore,"end"),u=new f.default(this.position.root,this.position.path,"sticksToPrevious"),this.batch.merge(i),this.position=l.default.createFromPosition(u),u.detach()}o.detach(),i.detach()}}},{key:"_tryAutoparagraphing",value:function(e,t){var n=new d.default("paragraph");this._getAllowedIn(n,this.position.parent)&&this._checkIsAllowed(e,[n])&&(n.appendChildren(e),this._handleNode(n,t))}},{key:"_checkAndSplitToAllowedPosition",value:function(e){var t=this._getAllowedIn(e,this.position.parent);if(!t)return!1;for(;t!=this.position.parent;){if(this.schema.limits.has(this.position.parent.name))return!1;if(this.position.isAtStart){var n=this.position.parent;this.position=l.default.createBefore(n),n.isEmpty&&this.batch.remove(n)}else if(this.position.isAtEnd)this.position=l.default.createAfter(this.position.parent);else{var r=l.default.createAfter(this.position.parent);this.batch.split(this.position),this.position=r,this.canMergeWith.add(this.position.nodeAfter)}}return!0}},{key:"_getAllowedIn",value:function(e,t){return this._checkIsAllowed(e,[t])?t:t.parent?this._getAllowedIn(e,t.parent):null}},{key:"_checkIsAllowed",value:function(e,t){return this.schema.check({name:this._getNodeSchemaName(e),attributes:Array.from(e.getAttributeKeys()),inside:t})}},{key:"_checkIsObject",value:function(e){return this.schema.objects.has(this._getNodeSchemaName(e))}},{key:"_getNodeSchemaName",value:function(e){return e.is("text")?"$text":e.name}}]),e}()},function(e,t,n){"use strict";function r(e){return e&&e.__esModule?e:{default:e}}/**
- * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.
- * For licensing, see LICENSE.md.
- */
-function o(e,t){for(var n=arguments.length>2&&void 0!==arguments[2]?arguments[2]:{},r=e.model.schema,o="backward"!=n.direction,a=n.unit?n.unit:"character",l=t.focus,s=new c.default({boundaries:u(l,o),singleCharacters:!0,direction:o?"forward":"backward"}),f={walker:s,schema:r,isForward:o,unit:a},d=void 0;d=s.next();){if(d.done)return;var h=i(f,d.value);if(h)return void t.setFocus(h)}}function i(e,t){if("text"==t.type)return a(e.walker,e.unit);if(t.type==(e.isForward?"elementStart":"elementEnd")){if(e.schema.objects.has(t.item.name))return s.default.createAt(t.item,e.isForward?"after":"before");if(e.schema.check({name:"$text",inside:t.nextPosition}))return t.nextPosition}else{if(e.schema.limits.has(t.item.name))return void e.walker.skip(function(){return!0});if(e.schema.check({name:"$text",inside:t.nextPosition}))return t.nextPosition}}function a(e,t){var n=e.position.textNode;if(n)for(var r=n.data,o=e.position.offset-n.startOffset;(0,p.isInsideSurrogatePair)(r,o)||"character"==t&&(0,p.isInsideCombinedSymbol)(r,o);)e.next(),o=e.position.offset-n.startOffset;return e.position}function u(e,t){var n=e.root,r=s.default.createAt(n,t?"end":0);return t?new h.default(e,r):new h.default(r,e)}Object.defineProperty(t,"__esModule",{value:!0}),t.default=o;var l=n(1),s=r(l),f=n(38),c=r(f),d=n(3),h=r(d),p=n(277)},function(e,t,n){"use strict";function r(e){return e&&e.__esModule?e:{default:e}}function o(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}Object.defineProperty(t,"__esModule",{value:!0});var i=function(){function e(e,t){for(var n=0;n<t.length;n++){var r=t[n];r.enumerable=r.enumerable||!1,r.configurable=!0,"value"in r&&(r.writable=!0),Object.defineProperty(e,r.key,r)}}return function(t,n,r){return n&&e(t.prototype,n),r&&e(t,r),t}}(),a=n(56),u=r(a),l=function(){function e(){o(this,e),this._consumable=new Map,this._textProxyRegistry=new Map}return i(e,[{key:"add",value:function(e,t){e instanceof u.default&&(e=this._getSymbolForTextProxy(e)),this._consumable.has(e)||this._consumable.set(e,new Map),this._consumable.get(e).set(t,!0)}},{key:"consume",value:function(e,t){return e instanceof u.default&&(e=this._getSymbolForTextProxy(e)),!!this.test(e,t)&&(this._consumable.get(e).set(t,!1),!0)}},{key:"test",value:function(e,t){e instanceof u.default&&(e=this._getSymbolForTextProxy(e));var n=this._consumable.get(e);if(void 0===n)return null;var r=n.get(t);return void 0===r?null:r}},{key:"revert",value:function(e,t){e instanceof u.default&&(e=this._getSymbolForTextProxy(e));var n=this.test(e,t);return n===!1?(this._consumable.get(e).set(t,!0),!0):n!==!0&&null}},{key:"_getSymbolForTextProxy",value:function(e){var t=null,n=this._textProxyRegistry.get(e.startOffset);if(n){var r=n.get(e.endOffset);r&&(t=r.get(e.parent))}return t||(t=this._addSymbolForTextProxy(e.startOffset,e.endOffset,e.parent)),t}},{key:"_addSymbolForTextProxy",value:function(e,t,n){var r=Symbol(),o=void 0,i=void 0;return o=this._textProxyRegistry.get(e),o||(o=new Map,this._textProxyRegistry.set(e,o)),i=o.get(t),i||(i=new Map,o.set(t,i)),i.set(n,r),r}}]),e}();t.default=l},function(e,t,n){"use strict";function r(e){return e&&e.__esModule?e:{default:e}}function o(e,t){return function(n,r){var o=r.newSelection,i=new a.default,u=[],l=!0,s=!1,f=void 0;try{for(var c,d=o.getRanges()[Symbol.iterator]();!(l=(c=d.next()).done);l=!0){var h=c.value;u.push(t.toModelRange(h))}}catch(e){s=!0,f=e}finally{try{!l&&d.return&&d.return()}finally{if(s)throw f}}i.setRanges(u,o.isBackward),i.isEqual(e.selection)||e.enqueueChanges(function(){e.selection.setTo(i)})}}Object.defineProperty(t,"__esModule",{value:!0}),t.convertSelectionChange=o;var i=n(72),a=r(i)},function(e,t,n){"use strict";function r(e){return e&&e.__esModule?e:{default:e}}function o(){return function(e,t,n,r){if(!t.output&&n.consume(t.input,{name:!0})){var o=r.convertChildren(t.input,n,t);t.output=new u.default((0,f.normalizeNodes)(o))}}}/**
- * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.
- * For licensing, see LICENSE.md.
- */
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l=a.value;"style"!=l&&"class"!=l&&t.attribute.push(l)}}catch(e){o=!0,i=e}finally{try{!r&&u.return&&u.return()}finally{if(o)throw i}}var s=e.getClassNames(),f=!0,c=!1,d=void 0;try{for(var h,p=s[Symbol.iterator]();!(f=(h=p.next()).done);f=!0){var v=h.value;t.class.push(v)}}catch(e){c=!0,d=e}finally{try{!f&&p.return&&p.return()}finally{if(c)throw d}}var y=e.getStyleNames(),b=!0,_=!1,m=void 0;try{for(var g,w=y[Symbol.iterator]();!(b=(g=w.next()).done);b=!0){var k=g.value;t.style.push(k)}}catch(e){_=!0,m=e}finally{try{!b&&w.return&&w.return()}finally{if(_)throw m}}return t}},{key:"createFrom",value:function(t,n){if(n||(n=new e),t.is("text"))return n.add(t),n;t.is("element")&&n.add(t,e.consumablesFromElement(t)),t.is("documentFragment")&&n.add(t);var r=!0,o=!1,i=void 0;try{for(var a,u=t.getChildren()[Symbol.iterator]();!(r=(a=u.next()).done);r=!0){var l=a.value;n=e.createFrom(l,n)}}catch(e){o=!0,i=e}finally{try{!r&&u.return&&u.return()}finally{if(o)throw i}}return n}}]),e}();t.default=c;var d=function(){function e(){i(this,e),this._canConsumeName=null,this._consumables={attribute:new Map,style:new Map,class:new Map}}return a(e,[{key:"add",value:function(e){e.name&&(this._canConsumeName=!0);for(var t in this._consumables)t in e&&this._add(t,e[t])}},{key:"test",value:function(e){if(e.name&&!this._canConsumeName)return this._canConsumeName;for(var t in this._consumables)if(t in e){var n=this._test(t,e[t]);if(n!==!0)return n}return!0}},{key:"consume",value:function(e){e.name&&(this._canConsumeName=!1);for(var t in this._consumables)t in e&&this._consume(t,e[t])}},{key:"revert",value:function(e){e.name&&(this._canConsumeName=!0);for(var t in this._consumables)t in e&&this._revert(t,e[t])}},{key:"_add",value:function(e,t){var n=(0,l.default)(t)?t:[t],r=this._consumables[e],o=!0,i=!1,a=void 0;try{for(var u,s=n[Symbol.iterator]();!(o=(u=s.next()).done);o=!0){var c=u.value;if("attribute"===e&&("class"===c||"style"===c))throw new f.default("viewconsumable-invalid-attribute: Classes and styles should be handled separately.");r.set(c,!0)}}catch(e){i=!0,a=e}finally{try{!o&&s.return&&s.return()}finally{if(i)throw a}}}},{key:"_test",value:function(e,t){var n=(0,l.default)(t)?t:[t],r=this._consumables[e],i=!0,a=!1,u=void 0;try{for(var s,f=n[Symbol.iterator]();!(i=(s=f.next()).done);i=!0){var c=s.value;if("attribute"!==e||"class"!==c&&"style"!==c){var d=r.get(c);if(void 0===d)return null;if(!d)return!1}else{var h=this._test(c,[].concat(o(this._consumables[c].keys())));if(h!==!0)return h}}}catch(e){a=!0,u=e}finally{try{!i&&f.return&&f.return()}finally{if(a)throw u}}return!0}},{key:"_consume",value:function(e,t){var n=(0,l.default)(t)?t:[t],r=this._consumables[e],i=!0,a=!1,u=void 0;try{for(var s,f=n[Symbol.iterator]();!(i=(s=f.next()).done);i=!0){var c=s.value;"attribute"!==e||"class"!==c&&"style"!==c?r.set(c,!1):this._consume(c,[].concat(o(this._consumables[c].keys())))}}catch(e){a=!0,u=e}finally{try{!i&&f.return&&f.return()}finally{if(a)throw 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- * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.
- * For licensing, see LICENSE.md.
- */
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-                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.
-                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */
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- * For licensing, see LICENSE.md.
- */
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i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new 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All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/ckeditorerror\n */\n\n/**\n * The CKEditor error class.\n *\n * All errors will be shortened during the minification process in order to reduce the code size.\n * Therefore, all error messages should be documented in the same way as those in {@link module:utils/log}.\n *\n * Read more in the {@link module:utils/log} module.\n *\n * @extends Error\n */\nvar CKEditorError = function (_Error) {\n\t_inherits(CKEditorError, _Error);\n\n\t/**\n  * Creates an instance of the CKEditorError class.\n  *\n  * Read more about error logging in the {@link module:utils/log} module.\n  *\n  * @param {String} message The error message in an `error-name: Error message.` format.\n  * During the minification process the \"Error message\" part will be removed to limit the code size\n  * and a link to this error documentation will be added to the `message`.\n  * @param {Object} [data] Additional data describing the error. A stringified version of this object\n  * will be appended to the error message, so the data are quickly visible in the console. The original\n  * data object will also be later available under the {@link #data} property.\n  */\n\tfunction CKEditorError(message, data) {\n\t\t_classCallCheck(this, CKEditorError);\n\n\t\tif (data) {\n\t\t\tmessage += ' ' + JSON.stringify(data);\n\t\t}\n\n\t\t/**\n   * @member {String}\n   */\n\t\tvar _this = _possibleConstructorReturn(this, (CKEditorError.__proto__ || Object.getPrototypeOf(CKEditorError)).call(this, message));\n\n\t\t_this.name = 'CKEditorError';\n\n\t\t/**\n   * The additional error data passed to the constructor.\n   *\n   * @member {Object}\n   */\n\t\t_this.data = data;\n\t\treturn _this;\n\t}\n\n\t/**\n  * Checks if error is an instance of CKEditorError class.\n  *\n  * @param {Object} error Object to check.\n  * @returns {Boolean}\n  */\n\n\n\t_createClass(CKEditorError, null, [{\n\t\tkey: 'isCKEditorError',\n\t\tvalue: function isCKEditorError(error) {\n\t\t\treturn error instanceof CKEditorError;\n\t\t}\n\t}]);\n\n\treturn CKEditorError;\n}(Error);\n\nexports.default = CKEditorError;\n\n/***/ }),\n/* 1 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module engine/model/position\n */\n\nvar _treewalker = __webpack_require__(38);\n\nvar _treewalker2 = _interopRequireDefault(_treewalker);\n\nvar _last = __webpack_require__(18);\n\nvar _last2 = _interopRequireDefault(_last);\n\nvar _comparearrays = __webpack_require__(48);\n\nvar _comparearrays2 = _interopRequireDefault(_comparearrays);\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nvar _text = __webpack_require__(23);\n\nvar _text2 = _interopRequireDefault(_text);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * Represents a position in the model tree.\n *\n * **Note:** Position is based on offsets, not indexes. This means that position in element containing two text nodes\n * with data `foo` and `bar`, position between them has offset `3`, not `1`.\n * See {@link module:engine/model/position~Position#path} for more.\n *\n * Since position in a model is represented by a {@link module:engine/model/position~Position#root position root} and\n * {@link module:engine/model/position~Position#path position path} it is possible to create positions placed in non-existing elements.\n * This requirement is important for {@link module:engine/model/operation/transform~transform operational transformation}.\n *\n * Also, {@link module:engine/model/operation/operation~Operation operations}\n * kept in {@link module:engine/model/document~Document#history document history}\n * are storing positions (and ranges) which were correct when those operations were applied, but may not be correct\n * after document got changed.\n *\n * When changes are applied to model, it may also happen that {@link module:engine/model/position~Position#parent position parent}\n * will change even if position path has not changed. Keep in mind, that if a position leads to non-existing element,\n * {@link module:engine/model/position~Position#parent} and some other properties and methods will throw errors.\n *\n * In most cases, position with wrong path is caused by an error in code, but it is sometimes needed, as described above.\n */\nvar Position = function () {\n\t/**\n  * Creates a position.\n  *\n  * @param {module:engine/model/element~Element|module:engine/model/documentfragment~DocumentFragment} root Root of the position.\n  * @param {Array.<Number>} path Position path. See {@link module:engine/model/position~Position#path}.\n  */\n\tfunction Position(root, path) {\n\t\t_classCallCheck(this, Position);\n\n\t\tif (!root.is('element') && !root.is('documentFragment')) {\n\t\t\t/**\n    * Position root invalid.\n    *\n    * @error position-root-invalid.\n    */\n\t\t\tthrow new _ckeditorerror2.default('model-position-root-invalid: Position root invalid.');\n\t\t}\n\n\t\tif (!(path instanceof Array) || path.length === 0) {\n\t\t\t/**\n    * Position path must be an Array with at least one item.\n    *\n    * @error position-path-incorrect\n    * @param path\n    */\n\t\t\tthrow new _ckeditorerror2.default('model-position-path-incorrect: Position path must be an Array with at least one item.', { path: path });\n\t\t}\n\n\t\t// Normalize the root and path (if element was passed).\n\t\tpath = root.getPath().concat(path);\n\t\troot = root.root;\n\n\t\t/**\n   * Root of the position path.\n   *\n   * @readonly\n   * @member {module:engine/model/element~Element|module:engine/model/documentfragment~DocumentFragment}\n   * module:engine/model/position~Position#root\n   */\n\t\tthis.root = root;\n\n\t\t/**\n   * Position of the node it the tree. Path is described through offsets, not indexes.\n   *\n   * Position can be placed before, after or in a {@link module:engine/model/node~Node node} if that node has\n   * {@link module:engine/model/node~Node#offsetSize} greater than `1`. Items in position path are\n   * {@link module:engine/model/node~Node#startOffset starting offsets} of position ancestors, starting from direct root children,\n   * down to the position offset in it's parent.\n   *\n   *\t\t ROOT\n   *\t\t  |- P            before: [ 0 ]         after: [ 1 ]\n   *\t\t  |- UL           before: [ 1 ]         after: [ 2 ]\n   *\t\t     |- LI        before: [ 1, 0 ]      after: [ 1, 1 ]\n   *\t\t     |  |- foo    before: [ 1, 0, 0 ]   after: [ 1, 0, 3 ]\n   *\t\t     |- LI        before: [ 1, 1 ]      after: [ 1, 2 ]\n   *\t\t        |- bar    before: [ 1, 1, 0 ]   after: [ 1, 1, 3 ]\n   *\n   * `foo` and `bar` are representing {@link module:engine/model/text~Text text nodes}. Since text nodes has offset size\n   * greater than `1` you can place position offset between their start and end:\n   *\n   *\t\t ROOT\n   *\t\t  |- P\n   *\t\t  |- UL\n   *\t\t     |- LI\n   *\t\t     |  |- f^o|o  ^ has path: [ 1, 0, 1 ]   | has path: [ 1, 0, 2 ]\n   *\t\t     |- LI\n   *\t\t        |- b^a|r  ^ has path: [ 1, 1, 1 ]   | has path: [ 1, 1, 2 ]\n   *\n   * @member {Array.<Number>} module:engine/model/position~Position#path\n   */\n\t\tthis.path = path;\n\t}\n\n\t/**\n  * Offset at which this position is located in its {@link module:engine/model/position~Position#parent parent}. It is equal\n  * to the last item in position {@link module:engine/model/position~Position#path path}.\n  *\n  * @type {Number}\n  */\n\n\n\t_createClass(Position, [{\n\t\tkey: 'compareWith',\n\n\n\t\t/**\n   * Checks whether this position is before or after given position.\n   *\n   * @param {module:engine/model/position~Position} otherPosition Position to compare with.\n   * @returns {module:engine/model/position~PositionRelation}\n   */\n\t\tvalue: function compareWith(otherPosition) {\n\t\t\tif (this.root != otherPosition.root) {\n\t\t\t\treturn 'different';\n\t\t\t}\n\n\t\t\tvar result = (0, _comparearrays2.default)(this.path, otherPosition.path);\n\n\t\t\tswitch (result) {\n\t\t\t\tcase 'same':\n\t\t\t\t\treturn 'same';\n\n\t\t\t\tcase 'prefix':\n\t\t\t\t\treturn 'before';\n\n\t\t\t\tcase 'extension':\n\t\t\t\t\treturn 'after';\n\n\t\t\t\tdefault:\n\t\t\t\t\tif (this.path[result] < otherPosition.path[result]) {\n\t\t\t\t\t\treturn 'before';\n\t\t\t\t\t} else {\n\t\t\t\t\t\treturn 'after';\n\t\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Gets the farthest position which matches the callback using\n   * {@link module:engine/model/treewalker~TreeWalker TreeWalker}.\n   *\n   * For example:\n   *\n   * \t\tgetLastMatchingPosition( value => value.type == 'text' );\n   * \t\t// <paragraph>[]foo</paragraph> -> <paragraph>foo[]</paragraph>\n   *\n   * \t\tgetLastMatchingPosition( value => value.type == 'text', { direction: 'backward' } );\n   * \t\t// <paragraph>foo[]</paragraph> -> <paragraph>[]foo</paragraph>\n   *\n   * \t\tgetLastMatchingPosition( value => false );\n   * \t\t// Do not move the position.\n   *\n   * @param {Function} skip Callback function. Gets {@link module:engine/model/treewalker~TreeWalkerValue} and should\n   * return `true` if the value should be skipped or `false` if not.\n   * @param {Object} options Object with configuration options. See {@link module:engine/model/treewalker~TreeWalker}.\n   *\n   * @returns {module:engine/model/position~Position} The position after the last item which matches the `skip` callback test.\n   */\n\n\t}, {\n\t\tkey: 'getLastMatchingPosition',\n\t\tvalue: function getLastMatchingPosition(skip) {\n\t\t\tvar options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n\n\t\t\toptions.startPosition = this;\n\n\t\t\tvar treeWalker = new _treewalker2.default(options);\n\t\t\ttreeWalker.skip(skip);\n\n\t\t\treturn treeWalker.position;\n\t\t}\n\n\t\t/**\n   * Returns a path to this position's parent. Parent path is equal to position {@link module:engine/model/position~Position#path path}\n   * but without the last item.\n   *\n   * This method returns the parent path even if the parent does not exists.\n   *\n   * @returns {Array.<Number>} Path to the parent.\n   */\n\n\t}, {\n\t\tkey: 'getParentPath',\n\t\tvalue: function getParentPath() {\n\t\t\treturn this.path.slice(0, -1);\n\t\t}\n\n\t\t/**\n   * Returns ancestors array of this position, that is this position's parent and its ancestors.\n   *\n   * @returns {Array.<module:engine/model/item~Item>} Array with ancestors.\n   */\n\n\t}, {\n\t\tkey: 'getAncestors',\n\t\tvalue: function getAncestors() {\n\t\t\tif (this.parent.is('documentFragment')) {\n\t\t\t\treturn [this.parent];\n\t\t\t} else {\n\t\t\t\treturn this.parent.getAncestors({ includeNode: true });\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Returns the slice of two position {@link #path paths} which is identical. The {@link #root roots}\n   * of these two paths must be identical.\n   *\n   * @param {module:engine/model/position~Position} position The second position.\n   * @returns {Array.<Number>} The common path.\n   */\n\n\t}, {\n\t\tkey: 'getCommonPath',\n\t\tvalue: function getCommonPath(position) {\n\t\t\tif (this.root != position.root) {\n\t\t\t\treturn [];\n\t\t\t}\n\n\t\t\t// We find on which tree-level start and end have the lowest common ancestor\n\t\t\tvar cmp = (0, _comparearrays2.default)(this.path, position.path);\n\t\t\t// If comparison returned string it means that arrays are same.\n\t\t\tvar diffAt = typeof cmp == 'string' ? Math.min(this.path.length, position.path.length) : cmp;\n\n\t\t\treturn this.path.slice(0, diffAt);\n\t\t}\n\n\t\t/**\n   * Returns a new instance of `Position`, that has same {@link #parent parent} but it's offset\n   * is shifted by `shift` value (can be a negative value).\n   *\n   * @param {Number} shift Offset shift. Can be a negative value.\n   * @returns {module:engine/model/position~Position} Shifted position.\n   */\n\n\t}, {\n\t\tkey: 'getShiftedBy',\n\t\tvalue: function getShiftedBy(shift) {\n\t\t\tvar shifted = Position.createFromPosition(this);\n\n\t\t\tvar offset = shifted.offset + shift;\n\t\t\tshifted.offset = offset < 0 ? 0 : offset;\n\n\t\t\treturn shifted;\n\t\t}\n\n\t\t/**\n   * Checks whether this position is after given position.\n   *\n   * @see module:engine/model/position~Position#isBefore\n   *\n   * @param {module:engine/model/position~Position} otherPosition Position to compare with.\n   * @returns {Boolean} True if this position is after given position.\n   */\n\n\t}, {\n\t\tkey: 'isAfter',\n\t\tvalue: function isAfter(otherPosition) {\n\t\t\treturn this.compareWith(otherPosition) == 'after';\n\t\t}\n\n\t\t/**\n   * Checks whether this position is before given position.\n   *\n   * **Note:** watch out when using negation of the value returned by this method, because the negation will also\n   * be `true` if positions are in different roots and you might not expect this. You should probably use\n   * `a.isAfter( b ) || a.isEqual( b )` or `!a.isBefore( p ) && a.root == b.root` in most scenarios. If your\n   * condition uses multiple `isAfter` and `isBefore` checks, build them so they do not use negated values, i.e.:\n   *\n   *\t\tif ( a.isBefore( b ) && c.isAfter( d ) ) {\n   *\t\t\t// do A.\n   *\t\t} else {\n   *\t\t\t// do B.\n   *\t\t}\n   *\n   * or, if you have only one if-branch:\n   *\n   *\t\tif ( !( a.isBefore( b ) && c.isAfter( d ) ) {\n   *\t\t\t// do B.\n   *\t\t}\n   *\n   * rather than:\n   *\n   *\t\tif ( !a.isBefore( b ) || && !c.isAfter( d ) ) {\n   *\t\t\t// do B.\n   *\t\t} else {\n   *\t\t\t// do A.\n   *\t\t}\n   *\n   * @param {module:engine/model/position~Position} otherPosition Position to compare with.\n   * @returns {Boolean} True if this position is before given position.\n   */\n\n\t}, {\n\t\tkey: 'isBefore',\n\t\tvalue: function isBefore(otherPosition) {\n\t\t\treturn this.compareWith(otherPosition) == 'before';\n\t\t}\n\n\t\t/**\n   * Checks whether this position is equal to given position.\n   *\n   * @param {module:engine/model/position~Position} otherPosition Position to compare with.\n   * @returns {Boolean} True if positions are same.\n   */\n\n\t}, {\n\t\tkey: 'isEqual',\n\t\tvalue: function isEqual(otherPosition) {\n\t\t\treturn this.compareWith(otherPosition) == 'same';\n\t\t}\n\n\t\t/**\n   * Checks whether this position is touching given position. Positions touch when there are no text nodes\n   * or empty nodes in a range between them. Technically, those positions are not equal but in many cases\n   * they are very similar or even indistinguishable.\n   *\n   * **Note:** this method traverses model document so it can be only used when range is up-to-date with model document.\n   *\n   * @param {module:engine/model/position~Position} otherPosition Position to compare with.\n   * @returns {Boolean} True if positions touch.\n   */\n\n\t}, {\n\t\tkey: 'isTouching',\n\t\tvalue: function isTouching(otherPosition) {\n\t\t\tvar left = null;\n\t\t\tvar right = null;\n\t\t\tvar compare = this.compareWith(otherPosition);\n\n\t\t\tswitch (compare) {\n\t\t\t\tcase 'same':\n\t\t\t\t\treturn true;\n\n\t\t\t\tcase 'before':\n\t\t\t\t\tleft = Position.createFromPosition(this);\n\t\t\t\t\tright = Position.createFromPosition(otherPosition);\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase 'after':\n\t\t\t\t\tleft = Position.createFromPosition(otherPosition);\n\t\t\t\t\tright = Position.createFromPosition(this);\n\t\t\t\t\tbreak;\n\n\t\t\t\tdefault:\n\t\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\t// Cached for optimization purposes.\n\t\t\tvar leftParent = left.parent;\n\n\t\t\twhile (left.path.length + right.path.length) {\n\t\t\t\tif (left.isEqual(right)) {\n\t\t\t\t\treturn true;\n\t\t\t\t}\n\n\t\t\t\tif (left.path.length > right.path.length) {\n\t\t\t\t\tif (left.offset !== leftParent.maxOffset) {\n\t\t\t\t\t\treturn false;\n\t\t\t\t\t}\n\n\t\t\t\t\tleft.path = left.path.slice(0, -1);\n\t\t\t\t\tleftParent = leftParent.parent;\n\t\t\t\t\tleft.offset++;\n\t\t\t\t} else {\n\t\t\t\t\tif (right.offset !== 0) {\n\t\t\t\t\t\treturn false;\n\t\t\t\t\t}\n\n\t\t\t\t\tright.path = right.path.slice(0, -1);\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Returns a copy of this position that is updated by removing `howMany` nodes starting from `deletePosition`.\n   * It may happen that this position is in a removed node. If that is the case, `null` is returned instead.\n   *\n   * @protected\n   * @param {module:engine/model/position~Position} deletePosition Position before the first removed node.\n   * @param {Number} howMany How many nodes are removed.\n   * @returns {module:engine/model/position~Position|null} Transformed position or `null`.\n   */\n\n\t}, {\n\t\tkey: '_getTransformedByDeletion',\n\t\tvalue: function _getTransformedByDeletion(deletePosition, howMany) {\n\t\t\tvar transformed = Position.createFromPosition(this);\n\n\t\t\t// This position can't be affected if deletion was in a different root.\n\t\t\tif (this.root != deletePosition.root) {\n\t\t\t\treturn transformed;\n\t\t\t}\n\n\t\t\tif ((0, _comparearrays2.default)(deletePosition.getParentPath(), this.getParentPath()) == 'same') {\n\t\t\t\t// If nodes are removed from the node that is pointed by this position...\n\t\t\t\tif (deletePosition.offset < this.offset) {\n\t\t\t\t\t// And are removed from before an offset of that position...\n\t\t\t\t\tif (deletePosition.offset + howMany > this.offset) {\n\t\t\t\t\t\t// Position is in removed range, it's no longer in the tree.\n\t\t\t\t\t\treturn null;\n\t\t\t\t\t} else {\n\t\t\t\t\t\t// Decrement the offset accordingly.\n\t\t\t\t\t\ttransformed.offset -= howMany;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} else if ((0, _comparearrays2.default)(deletePosition.getParentPath(), this.getParentPath()) == 'prefix') {\n\t\t\t\t// If nodes are removed from a node that is on a path to this position...\n\t\t\t\tvar i = deletePosition.path.length - 1;\n\n\t\t\t\tif (deletePosition.offset <= this.path[i]) {\n\t\t\t\t\t// And are removed from before next node of that path...\n\t\t\t\t\tif (deletePosition.offset + howMany > this.path[i]) {\n\t\t\t\t\t\t// If the next node of that path is removed return null\n\t\t\t\t\t\t// because the node containing this position got removed.\n\t\t\t\t\t\treturn null;\n\t\t\t\t\t} else {\n\t\t\t\t\t\t// Otherwise, decrement index on that path.\n\t\t\t\t\t\ttransformed.path[i] -= howMany;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn transformed;\n\t\t}\n\n\t\t/**\n   * Returns a copy of this position that is updated by inserting `howMany` nodes at `insertPosition`.\n   *\n   * @protected\n   * @param {module:engine/model/position~Position} insertPosition Position where nodes are inserted.\n   * @param {Number} howMany How many nodes are inserted.\n   * @param {Boolean} insertBefore Flag indicating whether nodes are inserted before or after `insertPosition`.\n   * This is important only when `insertPosition` and this position are same. If that is the case and the flag is\n   * set to `true`, this position will get transformed. If the flag is set to `false`, it won't.\n   * @returns {module:engine/model/position~Position} Transformed position.\n   */\n\n\t}, {\n\t\tkey: '_getTransformedByInsertion',\n\t\tvalue: function _getTransformedByInsertion(insertPosition, howMany, insertBefore) {\n\t\t\tvar transformed = Position.createFromPosition(this);\n\n\t\t\t// This position can't be affected if insertion was in a different root.\n\t\t\tif (this.root != insertPosition.root) {\n\t\t\t\treturn transformed;\n\t\t\t}\n\n\t\t\tif ((0, _comparearrays2.default)(insertPosition.getParentPath(), this.getParentPath()) == 'same') {\n\t\t\t\t// If nodes are inserted in the node that is pointed by this position...\n\t\t\t\tif (insertPosition.offset < this.offset || insertPosition.offset == this.offset && insertBefore) {\n\t\t\t\t\t// And are inserted before an offset of that position...\n\t\t\t\t\t// \"Push\" this positions offset.\n\t\t\t\t\ttransformed.offset += howMany;\n\t\t\t\t}\n\t\t\t} else if ((0, _comparearrays2.default)(insertPosition.getParentPath(), this.getParentPath()) == 'prefix') {\n\t\t\t\t// If nodes are inserted in a node that is on a path to this position...\n\t\t\t\tvar i = insertPosition.path.length - 1;\n\n\t\t\t\tif (insertPosition.offset <= this.path[i]) {\n\t\t\t\t\t// And are inserted before next node of that path...\n\t\t\t\t\t// \"Push\" the index on that path.\n\t\t\t\t\ttransformed.path[i] += howMany;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn transformed;\n\t\t}\n\n\t\t/**\n   * Returns a copy of this position that is updated by moving `howMany` nodes from `sourcePosition` to `targetPosition`.\n   *\n   * @protected\n   * @param {module:engine/model/position~Position} sourcePosition Position before the first element to move.\n   * @param {module:engine/model/position~Position} targetPosition Position where moved elements will be inserted.\n   * @param {Number} howMany How many consecutive nodes to move, starting from `sourcePosition`.\n   * @param {Boolean} insertBefore Flag indicating whether moved nodes are pasted before or after `insertPosition`.\n   * This is important only when `targetPosition` and this position are same. If that is the case and the flag is\n   * set to `true`, this position will get transformed by range insertion. If the flag is set to `false`, it won't.\n   * @param {Boolean} [sticky] Flag indicating whether this position \"sticks\" to range, that is if it should be moved\n   * with the moved range if it is equal to one of range's boundaries.\n   * @returns {module:engine/model/position~Position} Transformed position.\n   */\n\n\t}, {\n\t\tkey: '_getTransformedByMove',\n\t\tvalue: function _getTransformedByMove(sourcePosition, targetPosition, howMany, insertBefore, sticky) {\n\t\t\t// Moving a range removes nodes from their original position. We acknowledge this by proper transformation.\n\t\t\tvar transformed = this._getTransformedByDeletion(sourcePosition, howMany);\n\n\t\t\t// Then we update target position, as it could be affected by nodes removal too.\n\t\t\ttargetPosition = targetPosition._getTransformedByDeletion(sourcePosition, howMany);\n\n\t\t\tif (transformed === null || sticky && transformed.isEqual(sourcePosition)) {\n\t\t\t\t// This position is inside moved range (or sticks to it).\n\t\t\t\t// In this case, we calculate a combination of this position, move source position and target position.\n\t\t\t\ttransformed = this._getCombined(sourcePosition, targetPosition);\n\t\t\t} else {\n\t\t\t\t// This position is not inside a removed range.\n\t\t\t\t// In next step, we simply reflect inserting `howMany` nodes, which might further affect the position.\n\t\t\t\ttransformed = transformed._getTransformedByInsertion(targetPosition, howMany, insertBefore);\n\t\t\t}\n\n\t\t\treturn transformed;\n\t\t}\n\n\t\t/**\n   * Returns a new position that is a combination of this position and given positions.\n   *\n   * The combined position is a copy of this position transformed by moving a range starting at `source` position\n   * to the `target` position. It is expected that this position is inside the moved range.\n   *\n   * Example:\n   *\n   *\t\tlet original = new Position( root, [ 2, 3, 1 ] );\n   *\t\tlet source = new Position( root, [ 2, 2 ] );\n   *\t\tlet target = new Position( otherRoot, [ 1, 1, 3 ] );\n   *\t\toriginal._getCombined( source, target ); // path is [ 1, 1, 4, 1 ], root is `otherRoot`\n   *\n   * Explanation:\n   *\n   * We have a position `[ 2, 3, 1 ]` and move some nodes from `[ 2, 2 ]` to `[ 1, 1, 3 ]`. The original position\n   * was inside moved nodes and now should point to the new place. The moved nodes will be after\n   * positions `[ 1, 1, 3 ]`, `[ 1, 1, 4 ]`, `[ 1, 1, 5 ]`. Since our position was in the second moved node,\n   * the transformed position will be in a sub-tree of a node at `[ 1, 1, 4 ]`. Looking at original path, we\n   * took care of `[ 2, 3 ]` part of it. Now we have to add the rest of the original path to the transformed path.\n   * Finally, the transformed position will point to `[ 1, 1, 4, 1 ]`.\n   *\n   * @protected\n   * @param {module:engine/model/position~Position} source Beginning of the moved range.\n   * @param {module:engine/model/position~Position} target Position where the range is moved.\n   * @returns {module:engine/model/position~Position} Combined position.\n   */\n\n\t}, {\n\t\tkey: '_getCombined',\n\t\tvalue: function _getCombined(source, target) {\n\t\t\tvar i = source.path.length - 1;\n\n\t\t\t// The first part of a path to combined position is a path to the place where nodes were moved.\n\t\t\tvar combined = Position.createFromPosition(target);\n\n\t\t\t// Then we have to update the rest of the path.\n\n\t\t\t// Fix the offset because this position might be after `from` position and we have to reflect that.\n\t\t\tcombined.offset = combined.offset + this.path[i] - source.offset;\n\n\t\t\t// Then, add the rest of the path.\n\t\t\t// If this position is at the same level as `from` position nothing will get added.\n\t\t\tcombined.path = combined.path.concat(this.path.slice(i + 1));\n\n\t\t\treturn combined;\n\t\t}\n\n\t\t/**\n   * Creates position at the given location. The location can be specified as:\n   *\n   * * a {@link module:engine/model/position~Position position},\n   * * parent element and offset (offset defaults to `0`),\n   * * parent element and `'end'` (sets position at the end of that element),\n   * * {@link module:engine/model/item~Item model item} and `'before'` or `'after'` (sets position before or after given model item).\n   *\n   * This method is a shortcut to other constructors such as:\n   *\n   * * {@link module:engine/model/position~Position.createBefore},\n   * * {@link module:engine/model/position~Position.createAfter},\n   * * {@link module:engine/model/position~Position.createFromParentAndOffset},\n   * * {@link module:engine/model/position~Position.createFromPosition}.\n   *\n   * @param {module:engine/model/item~Item|module:engine/model/position~Position} itemOrPosition\n   * @param {Number|'end'|'before'|'after'} [offset=0] Offset or one of the flags. Used only when\n   * first parameter is a {@link module:engine/model/item~Item model item}.\n   */\n\n\t}, {\n\t\tkey: 'offset',\n\t\tget: function get() {\n\t\t\treturn (0, _last2.default)(this.path);\n\t\t}\n\n\t\t/**\n   * @param {Number} newOffset\n   */\n\t\t,\n\t\tset: function set(newOffset) {\n\t\t\tthis.path[this.path.length - 1] = newOffset;\n\t\t}\n\n\t\t/**\n   * Parent element of this position.\n   *\n   * Keep in mind that `parent` value is calculated when the property is accessed.\n   * If {@link module:engine/model/position~Position#path position path}\n   * leads to a non-existing element, `parent` property will throw error.\n   *\n   * Also it is a good idea to cache `parent` property if it is used frequently in an algorithm (i.e. in a long loop).\n   *\n   * @readonly\n   * @type {module:engine/model/element~Element}\n   */\n\n\t}, {\n\t\tkey: 'parent',\n\t\tget: function get() {\n\t\t\tvar parent = this.root;\n\n\t\t\tfor (var i = 0; i < this.path.length - 1; i++) {\n\t\t\t\tparent = parent.getChild(parent.offsetToIndex(this.path[i]));\n\t\t\t}\n\n\t\t\treturn parent;\n\t\t}\n\n\t\t/**\n   * Position {@link module:engine/model/position~Position#offset offset} converted to an index in position's parent node. It is\n   * equal to the {@link module:engine/model/node~Node#index index} of a node after this position. If position is placed\n   * in text node, position index is equal to the index of that text node.\n   *\n   * @readonly\n   * @type {Number}\n   */\n\n\t}, {\n\t\tkey: 'index',\n\t\tget: function get() {\n\t\t\treturn this.parent.offsetToIndex(this.offset);\n\t\t}\n\n\t\t/**\n   * Returns {@link module:engine/model/text~Text text node} instance in which this position is placed or `null` if this\n   * position is not in a text node.\n   *\n   * @readonly\n   * @type {module:engine/model/text~Text|null}\n   */\n\n\t}, {\n\t\tkey: 'textNode',\n\t\tget: function get() {\n\t\t\tvar node = this.parent.getChild(this.index);\n\n\t\t\treturn node instanceof _text2.default && node.startOffset < this.offset ? node : null;\n\t\t}\n\n\t\t/**\n   * Node directly after this position or `null` if this position is in text node.\n   *\n   * @readonly\n   * @type {module:engine/model/node~Node|null}\n   */\n\n\t}, {\n\t\tkey: 'nodeAfter',\n\t\tget: function get() {\n\t\t\treturn this.textNode === null ? this.parent.getChild(this.index) : null;\n\t\t}\n\n\t\t/**\n   * Node directly before this position or `null` if this position is in text node.\n   *\n   * @readonly\n   * @type {Node}\n   */\n\n\t}, {\n\t\tkey: 'nodeBefore',\n\t\tget: function get() {\n\t\t\treturn this.textNode === null ? this.parent.getChild(this.index - 1) : null;\n\t\t}\n\n\t\t/**\n   * Is `true` if position is at the beginning of its {@link module:engine/model/position~Position#parent parent}, `false` otherwise.\n   *\n   * @readonly\n   * @type {Boolean}\n   */\n\n\t}, {\n\t\tkey: 'isAtStart',\n\t\tget: function get() {\n\t\t\treturn this.offset === 0;\n\t\t}\n\n\t\t/**\n   * Is `true` if position is at the end of its {@link module:engine/model/position~Position#parent parent}, `false` otherwise.\n   *\n   * @readonly\n   * @type {Boolean}\n   */\n\n\t}, {\n\t\tkey: 'isAtEnd',\n\t\tget: function get() {\n\t\t\treturn this.offset == this.parent.maxOffset;\n\t\t}\n\t}], [{\n\t\tkey: 'createAt',\n\t\tvalue: function createAt(itemOrPosition, offset) {\n\t\t\tif (itemOrPosition instanceof Position) {\n\t\t\t\treturn this.createFromPosition(itemOrPosition);\n\t\t\t} else {\n\t\t\t\tvar node = itemOrPosition;\n\n\t\t\t\tif (offset == 'end') {\n\t\t\t\t\toffset = node.maxOffset;\n\t\t\t\t} else if (offset == 'before') {\n\t\t\t\t\treturn this.createBefore(node);\n\t\t\t\t} else if (offset == 'after') {\n\t\t\t\t\treturn this.createAfter(node);\n\t\t\t\t} else if (!offset) {\n\t\t\t\t\toffset = 0;\n\t\t\t\t}\n\n\t\t\t\treturn this.createFromParentAndOffset(node, offset);\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Creates a new position, after given {@link module:engine/model/item~Item model item}.\n   *\n   * @param {module:engine/model/item~Item} item Item after which the position should be placed.\n   * @returns {module:engine/model/position~Position}\n   */\n\n\t}, {\n\t\tkey: 'createAfter',\n\t\tvalue: function createAfter(item) {\n\t\t\tif (!item.parent) {\n\t\t\t\t/**\n     * You can not make position after root.\n     *\n     * @error position-after-root\n     * @param {module:engine/model/item~Item} root\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('model-position-after-root: You can not make position after root.', { root: item });\n\t\t\t}\n\n\t\t\treturn this.createFromParentAndOffset(item.parent, item.endOffset);\n\t\t}\n\n\t\t/**\n   * Creates a new position, before the given {@link module:engine/model/item~Item model item}.\n   *\n   * @param {module:engine/model/item~Item} item Item before which the position should be placed.\n   * @returns {module:engine/model/position~Position}\n   */\n\n\t}, {\n\t\tkey: 'createBefore',\n\t\tvalue: function createBefore(item) {\n\t\t\tif (!item.parent) {\n\t\t\t\t/**\n     * You can not make position before root.\n     *\n     * @error position-before-root\n     * @param {module:engine/model/item~Item} root\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('model-position-before-root: You can not make position before root.', { root: item });\n\t\t\t}\n\n\t\t\treturn this.createFromParentAndOffset(item.parent, item.startOffset);\n\t\t}\n\n\t\t/**\n   * Creates a new position from the parent element and an offset in that element.\n   *\n   * @param {module:engine/model/element~Element|module:engine/model/documentfragment~DocumentFragment} parent Position's parent.\n   * @param {Number} offset Position's offset.\n   * @returns {module:engine/model/position~Position}\n   */\n\n\t}, {\n\t\tkey: 'createFromParentAndOffset',\n\t\tvalue: function createFromParentAndOffset(parent, offset) {\n\t\t\tif (!parent.is('element') && !parent.is('documentFragment')) {\n\t\t\t\t/**\n     * Position parent have to be a model element or model document fragment.\n     *\n     * @error position-parent-incorrect\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('model-position-parent-incorrect: Position parent have to be a element or document fragment.');\n\t\t\t}\n\n\t\t\tvar path = parent.getPath();\n\n\t\t\tpath.push(offset);\n\n\t\t\treturn new this(parent.root, path);\n\t\t}\n\n\t\t/**\n   * Creates a new position, which is equal to passed position.\n   *\n   * @param {module:engine/model/position~Position} position Position to be cloned.\n   * @returns {module:engine/model/position~Position}\n   */\n\n\t}, {\n\t\tkey: 'createFromPosition',\n\t\tvalue: function createFromPosition(position) {\n\t\t\treturn new this(position.root, position.path.slice());\n\t\t}\n\n\t\t/**\n   * Creates a `Position` instance from given plain object (i.e. parsed JSON string).\n   *\n   * @param {Object} json Plain object to be converted to `Position`.\n   * @returns {module:engine/model/position~Position} `Position` instance created using given plain object.\n   */\n\n\t}, {\n\t\tkey: 'fromJSON',\n\t\tvalue: function fromJSON(json, doc) {\n\t\t\tif (json.root === '$graveyard') {\n\t\t\t\treturn new Position(doc.graveyard, json.path);\n\t\t\t}\n\n\t\t\tif (!doc.hasRoot(json.root)) {\n\t\t\t\t/**\n     * Cannot create position for document. Root with specified name does not exist.\n     *\n     * @error position-fromjson-no-root\n     * @param {String} rootName\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('model-position-fromjson-no-root: Cannot create position for document. Root with specified name does not exist.', { rootName: json.root });\n\t\t\t}\n\n\t\t\treturn new Position(doc.getRoot(json.root), json.path);\n\t\t}\n\t}]);\n\n\treturn Position;\n}();\n\n/**\n * A flag indicating whether this position is `'before'` or `'after'` or `'same'` as given position.\n * If positions are in different roots `'different'` flag is returned.\n *\n * @typedef {String} module:engine/model/position~PositionRelation\n */\n\n\nexports.default = Position;\n\n/***/ }),\n/* 2 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module core/plugin\n */\n\nvar _observablemixin = __webpack_require__(31);\n\nvar _observablemixin2 = _interopRequireDefault(_observablemixin);\n\nvar _mix = __webpack_require__(4);\n\nvar _mix2 = _interopRequireDefault(_mix);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * The base class for CKEditor plugin classes.\n *\n * @mixes module:utils/observablemixin~ObservaleMixin\n */\nvar Plugin = function () {\n\t/**\n  * Creates a new Plugin instance. This is the first step of a plugin initialization.\n  * See also {@link #init} and {@link #afterInit}.\n  *\n  * A plugin is always instantiated after its {@link module:core/plugin~Plugin.requires dependencies} and the\n  * {@link #init} and {@link #afterInit} methods are called in the same order.\n  *\n  * Usually, you'll want to put your plugin's initialization code in the {@link #init} method.\n  * The constructor can be understood as \"before init\" and used in special cases, just like\n  * {@link #afterInit} servers for the special \"after init\" scenarios (e.g. code which depends on other\n  * plugins, but which doesn't {@link module:core/plugin~Plugin.requires explicitly require} them).\n  *\n  * @param {module:core/editor/editor~Editor} editor\n  */\n\tfunction Plugin(editor) {\n\t\t_classCallCheck(this, Plugin);\n\n\t\t/**\n   * The editor instance.\n   *\n   * @readonly\n   * @member {module:core/editor/editor~Editor} module:core/plugin~Plugin#editor\n   */\n\t\tthis.editor = editor;\n\t}\n\n\t/**\n  * An array of plugins required by this plugin.\n  *\n  * To keep a plugin class definition tight it's recommended to define this property as a static getter:\n  *\n  *\t\timport Image from './image.js';\n  *\n  *\t\texport default class ImageCaption extends Plugin {\n     *\t\t\tstatic get requires() {\n     *\t\t\t\treturn [ Image ];\n     *\t\t\t}\n  *\t\t}\n  *\n  * @static\n  * @member {Array.<Function>|undefined} module:core/plugin~Plugin.requires\n  */\n\n\t/**\n  * Optional name of the plugin. If set, the plugin will be available in\n  * {@link module:core/plugincollection~PluginCollection#get} by its\n  * name and its constructor. If not, then only by its constructor.\n  *\n  * The name should reflect the package name + path to that module. E.g. `ckeditor5-image/src/image.js` plugin\n  * should be named `image/image` (the `ckeditor5-` prefix is stripped during compilation).\n  *\n  * To keep a plugin class definition tight it's recommended to define this property as a static getter:\n  *\n  *\t\texport default class ImageCaption {\n     *\t\t\tstatic get pluginName() {\n     *\t\t\t\treturn 'image/imagecaption';\n     *\t\t\t}\n  *\t\t}\n  *\n  * @static\n  * @member {String|undefined} module:core/plugin~Plugin.pluginName\n  */\n\n\t/**\n  * The second stage (after plugin {@link #constructor}) of plugin initialization.\n  * Unlike the plugin constructor this method can perform asynchronous.\n  *\n  * A plugin's `init()` method is called after its {@link module:core/plugin~Plugin.requires dependencies} are initialized,\n  * so in the same order as constructors of these plugins.\n  *\n  * @returns {null|Promise}\n  */\n\n\n\t_createClass(Plugin, [{\n\t\tkey: 'init',\n\t\tvalue: function init() {}\n\n\t\t/**\n   * The third (and last) stage of plugin initialization. See also {@link #constructor} and {@link #init}.\n   *\n   * @returns {null|Promise}\n   */\n\n\t}, {\n\t\tkey: 'afterInit',\n\t\tvalue: function afterInit() {}\n\n\t\t/**\n   * Destroys the plugin.\n   *\n   * @returns {null|Promise}\n   */\n\n\t}, {\n\t\tkey: 'destroy',\n\t\tvalue: function destroy() {}\n\t}]);\n\n\treturn Plugin;\n}();\n\nexports.default = Plugin;\n\n\n(0, _mix2.default)(Plugin, _observablemixin2.default);\n\n/***/ }),\n/* 3 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module engine/model/range\n */\n\nvar _position = __webpack_require__(1);\n\nvar _position2 = _interopRequireDefault(_position);\n\nvar _treewalker = __webpack_require__(38);\n\nvar _treewalker2 = _interopRequireDefault(_treewalker);\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _toConsumableArray(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } else { return Array.from(arr); } }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * Range class. Range is iterable.\n */\nvar Range = function () {\n\t/**\n  * Creates a range spanning from `start` position to `end` position.\n  *\n  * **Note:** Constructor creates it's own {@link module:engine/model/position~Position Position} instances basing on passed values.\n  *\n  * @param {module:engine/model/position~Position} start Start position.\n  * @param {module:engine/model/position~Position} [end] End position. If not set, range will be collapsed at `start` position.\n  */\n\tfunction Range(start) {\n\t\tvar end = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n\n\t\t_classCallCheck(this, Range);\n\n\t\t/**\n   * Start position.\n   *\n   * @readonly\n   * @member {module:engine/model/position~Position}\n   */\n\t\tthis.start = _position2.default.createFromPosition(start);\n\n\t\t/**\n   * End position.\n   *\n   * @readonly\n   * @member {module:engine/model/position~Position}\n   */\n\t\tthis.end = end ? _position2.default.createFromPosition(end) : _position2.default.createFromPosition(start);\n\t}\n\n\t/**\n  * Returns an iterator that iterates over all {@link module:engine/model/item~Item items} that are in this range and returns\n  * them together with additional information like length or {@link module:engine/model/position~Position positions},\n  * grouped as {@link module:engine/model/treewalker~TreeWalkerValue}.\n  * It iterates over all {@link module:engine/model/textproxy~TextProxy text contents} that are inside the range\n  * and all the {@link module:engine/model/element~Element}s that are entered into when iterating over this range.\n  *\n  * This iterator uses {@link module:engine/model/treewalker~TreeWalker} with `boundaries` set to this range\n  * and `ignoreElementEnd` option set to `true`.\n  *\n  * @returns {Iterable.<module:engine/model/treewalker~TreeWalkerValue>}\n  */\n\n\n\t_createClass(Range, [{\n\t\tkey: Symbol.iterator,\n\t\tvalue: regeneratorRuntime.mark(function value() {\n\t\t\treturn regeneratorRuntime.wrap(function value$(_context) {\n\t\t\t\twhile (1) {\n\t\t\t\t\tswitch (_context.prev = _context.next) {\n\t\t\t\t\t\tcase 0:\n\t\t\t\t\t\t\treturn _context.delegateYield(new _treewalker2.default({ boundaries: this, ignoreElementEnd: true }), 't0', 1);\n\n\t\t\t\t\t\tcase 1:\n\t\t\t\t\t\tcase 'end':\n\t\t\t\t\t\t\treturn _context.stop();\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}, value, this);\n\t\t})\n\n\t\t/**\n   * Returns whether the range is collapsed, that is if {@link #start start} and\n   * {@link #end end} positions are equal.\n   *\n   * @type {Boolean}\n   */\n\n\t}, {\n\t\tkey: 'containsPosition',\n\n\n\t\t/**\n   * Checks whether this range contains given {@link module:engine/model/position~Position position}.\n   *\n   * @param {module:engine/model/position~Position} position Position to check.\n   * @returns {Boolean} `true` if given {@link module:engine/model/position~Position position} is contained in this range, `false` otherwise.\n   */\n\t\tvalue: function containsPosition(position) {\n\t\t\treturn position.isAfter(this.start) && position.isBefore(this.end);\n\t\t}\n\n\t\t/**\n   * Checks whether this range contains given {@link ~Range range}.\n   *\n   * @param {module:engine/model/range~Range} otherRange Range to check.\n   * @returns {Boolean} `true` if given {@link ~Range range} boundaries are contained by this range, `false` otherwise.\n   */\n\n\t}, {\n\t\tkey: 'containsRange',\n\t\tvalue: function containsRange(otherRange) {\n\t\t\treturn this.containsPosition(otherRange.start) && this.containsPosition(otherRange.end);\n\t\t}\n\n\t\t/**\n   * Two ranges are equal if their {@link #start start} and\n   * {@link #end end} positions are equal.\n   *\n   * @param {module:engine/model/range~Range} otherRange Range to compare with.\n   * @returns {Boolean} `true` if ranges are equal, `false` otherwise.\n   */\n\n\t}, {\n\t\tkey: 'isEqual',\n\t\tvalue: function isEqual(otherRange) {\n\t\t\treturn this.start.isEqual(otherRange.start) && this.end.isEqual(otherRange.end);\n\t\t}\n\n\t\t/**\n   * Checks and returns whether this range intersects with given range.\n   *\n   * @param {module:engine/model/range~Range} otherRange Range to compare with.\n   * @returns {Boolean} `true` if ranges intersect, `false` otherwise.\n   */\n\n\t}, {\n\t\tkey: 'isIntersecting',\n\t\tvalue: function isIntersecting(otherRange) {\n\t\t\treturn this.start.isBefore(otherRange.end) && this.end.isAfter(otherRange.start);\n\t\t}\n\n\t\t/**\n   * Computes which part(s) of this {@link ~Range range} is not a part of given {@link ~Range range}.\n   * Returned array contains zero, one or two {@link ~Range ranges}.\n   *\n   * Examples:\n   *\n   *\t\tlet range = new Range( new Position( root, [ 2, 7 ] ), new Position( root, [ 4, 0, 1 ] ) );\n   *\t\tlet otherRange = new Range( new Position( root, [ 1 ] ), new Position( root, [ 5 ] ) );\n   *\t\tlet transformed = range.getDifference( otherRange );\n   *\t\t// transformed array has no ranges because `otherRange` contains `range`\n   *\n   *\t\totherRange = new Range( new Position( root, [ 1 ] ), new Position( root, [ 3 ] ) );\n   *\t\ttransformed = range.getDifference( otherRange );\n   *\t\t// transformed array has one range: from [ 3 ] to [ 4, 0, 1 ]\n   *\n   *\t\totherRange = new Range( new Position( root, [ 3 ] ), new Position( root, [ 4 ] ) );\n   *\t\ttransformed = range.getDifference( otherRange );\n   *\t\t// transformed array has two ranges: from [ 2, 7 ] to [ 3 ] and from [ 4 ] to [ 4, 0, 1 ]\n   *\n   * @param {module:engine/model/range~Range} otherRange Range to differentiate against.\n   * @returns {Array.<module:engine/model/range~Range>} The difference between ranges.\n   */\n\n\t}, {\n\t\tkey: 'getDifference',\n\t\tvalue: function getDifference(otherRange) {\n\t\t\tvar ranges = [];\n\n\t\t\tif (this.isIntersecting(otherRange)) {\n\t\t\t\t// Ranges intersect.\n\n\t\t\t\tif (this.containsPosition(otherRange.start)) {\n\t\t\t\t\t// Given range start is inside this range. This means that we have to\n\t\t\t\t\t// add shrunken range - from the start to the middle of this range.\n\t\t\t\t\tranges.push(new Range(this.start, otherRange.start));\n\t\t\t\t}\n\n\t\t\t\tif (this.containsPosition(otherRange.end)) {\n\t\t\t\t\t// Given range end is inside this range. This means that we have to\n\t\t\t\t\t// add shrunken range - from the middle of this range to the end.\n\t\t\t\t\tranges.push(new Range(otherRange.end, this.end));\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\t// Ranges do not intersect, return the original range.\n\t\t\t\tranges.push(Range.createFromRange(this));\n\t\t\t}\n\n\t\t\treturn ranges;\n\t\t}\n\n\t\t/**\n   * Returns an intersection of this {@link ~Range range} and given {@link ~Range range}.\n   * Intersection is a common part of both of those ranges. If ranges has no common part, returns `null`.\n   *\n   * Examples:\n   *\n   *\t\tlet range = new Range( new Position( root, [ 2, 7 ] ), new Position( root, [ 4, 0, 1 ] ) );\n   *\t\tlet otherRange = new Range( new Position( root, [ 1 ] ), new Position( root, [ 2 ] ) );\n   *\t\tlet transformed = range.getIntersection( otherRange ); // null - ranges have no common part\n   *\n   *\t\totherRange = new Range( new Position( root, [ 3 ] ), new Position( root, [ 5 ] ) );\n   *\t\ttransformed = range.getIntersection( otherRange ); // range from [ 3 ] to [ 4, 0, 1 ]\n   *\n   * @param {module:engine/model/range~Range} otherRange Range to check for intersection.\n   * @returns {module:engine/model/range~Range|null} A common part of given ranges or `null` if ranges have no common part.\n   */\n\n\t}, {\n\t\tkey: 'getIntersection',\n\t\tvalue: function getIntersection(otherRange) {\n\t\t\tif (this.isIntersecting(otherRange)) {\n\t\t\t\t// Ranges intersect, so a common range will be returned.\n\t\t\t\t// At most, it will be same as this range.\n\t\t\t\tvar commonRangeStart = this.start;\n\t\t\t\tvar commonRangeEnd = this.end;\n\n\t\t\t\tif (this.containsPosition(otherRange.start)) {\n\t\t\t\t\t// Given range start is inside this range. This means thaNt we have to\n\t\t\t\t\t// shrink common range to the given range start.\n\t\t\t\t\tcommonRangeStart = otherRange.start;\n\t\t\t\t}\n\n\t\t\t\tif (this.containsPosition(otherRange.end)) {\n\t\t\t\t\t// Given range end is inside this range. This means that we have to\n\t\t\t\t\t// shrink common range to the given range end.\n\t\t\t\t\tcommonRangeEnd = otherRange.end;\n\t\t\t\t}\n\n\t\t\t\treturn new Range(commonRangeStart, commonRangeEnd);\n\t\t\t}\n\n\t\t\t// Ranges do not intersect, so they do not have common part.\n\t\t\treturn null;\n\t\t}\n\n\t\t/**\n   * Computes and returns the smallest set of {@link #isFlat flat} ranges, that covers this range in whole.\n   *\n   * See an example of a model structure (`[` and `]` are range boundaries):\n   *\n   *\t\troot                                                            root\n   *\t\t |- element DIV                         DIV             P2              P3             DIV\n   *\t\t |   |- element H                   H        P1        f o o           b a r       H         P4\n   *\t\t |   |   |- \"fir[st\"             fir[st     lorem                               se]cond     ipsum\n   *\t\t |   |- element P1\n   *\t\t |   |   |- \"lorem\"                                              ||\n   *\t\t |- element P2                                                   ||\n   *\t\t |   |- \"foo\"                                                    VV\n   *\t\t |- element P3\n   *\t\t |   |- \"bar\"                                                   root\n   *\t\t |- element DIV                         DIV             [P2             P3]             DIV\n   *\t\t |   |- element H                   H       [P1]       f o o           b a r        H         P4\n   *\t\t |   |   |- \"se]cond\"            fir[st]    lorem                               [se]cond     ipsum\n   *\t\t |   |- element P4\n   *\t\t |   |   |- \"ipsum\"\n   *\n   * As it can be seen, letters contained in the range are: `stloremfoobarse`, spread across different parents.\n   * We are looking for minimal set of flat ranges that contains the same nodes.\n   *\n   * Minimal flat ranges for above range `( [ 0, 0, 3 ], [ 3, 0, 2 ] )` will be:\n   *\n   *\t\t( [ 0, 0, 3 ], [ 0, 0, 5 ] ) = \"st\"\n   *\t\t( [ 0, 1 ], [ 0, 2 ] ) = element P1 (\"lorem\")\n   *\t\t( [ 1 ], [ 3 ] ) = element P2, element P3 (\"foobar\")\n   *\t\t( [ 3, 0, 0 ], [ 3, 0, 2 ] ) = \"se\"\n   *\n   * **Note:** if an {@link module:engine/model/element~Element element} is not wholly contained in this range, it won't be returned\n   * in any of the returned flat ranges. See in the example how `H` elements at the beginning and at the end of the range\n   * were omitted. Only their parts that were wholly in the range were returned.\n   *\n   * **Note:** this method is not returning flat ranges that contain no nodes.\n   *\n   * @returns {Array.<module:engine/model/range~Range>} Array of flat ranges covering this range.\n   */\n\n\t}, {\n\t\tkey: 'getMinimalFlatRanges',\n\t\tvalue: function getMinimalFlatRanges() {\n\t\t\tvar ranges = [];\n\t\t\tvar diffAt = this.start.getCommonPath(this.end).length;\n\n\t\t\tvar pos = _position2.default.createFromPosition(this.start);\n\t\t\tvar posParent = pos.parent;\n\n\t\t\t// Go up.\n\t\t\twhile (pos.path.length > diffAt + 1) {\n\t\t\t\tvar howMany = posParent.maxOffset - pos.offset;\n\n\t\t\t\tif (howMany !== 0) {\n\t\t\t\t\tranges.push(new Range(pos, pos.getShiftedBy(howMany)));\n\t\t\t\t}\n\n\t\t\t\tpos.path = pos.path.slice(0, -1);\n\t\t\t\tpos.offset++;\n\t\t\t\tposParent = posParent.parent;\n\t\t\t}\n\n\t\t\t// Go down.\n\t\t\twhile (pos.path.length <= this.end.path.length) {\n\t\t\t\tvar offset = this.end.path[pos.path.length - 1];\n\t\t\t\tvar _howMany = offset - pos.offset;\n\n\t\t\t\tif (_howMany !== 0) {\n\t\t\t\t\tranges.push(new Range(pos, pos.getShiftedBy(_howMany)));\n\t\t\t\t}\n\n\t\t\t\tpos.offset = offset;\n\t\t\t\tpos.path.push(0);\n\t\t\t}\n\n\t\t\treturn ranges;\n\t\t}\n\n\t\t/**\n   * Creates a {@link module:engine/model/treewalker~TreeWalker TreeWalker} instance with this range as a boundary.\n   *\n   * @param {Object} options Object with configuration options. See {@link module:engine/model/treewalker~TreeWalker}.\n   * @param {module:engine/model/position~Position} [options.startPosition]\n   * @param {Boolean} [options.singleCharacters=false]\n   * @param {Boolean} [options.shallow=false]\n   * @param {Boolean} [options.ignoreElementEnd=false]\n   */\n\n\t}, {\n\t\tkey: 'getWalker',\n\t\tvalue: function getWalker() {\n\t\t\tvar options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n\n\t\t\toptions.boundaries = this;\n\n\t\t\treturn new _treewalker2.default(options);\n\t\t}\n\n\t\t/**\n   * Returns an iterator that iterates over all {@link module:engine/model/item~Item items} that are in this range and returns\n   * them.\n   *\n   * This method uses {@link module:engine/model/treewalker~TreeWalker} with `boundaries` set to this range and `ignoreElementEnd` option\n   * set to `true`. However it returns only {@link module:engine/model/item~Item model items},\n   * not {@link module:engine/model/treewalker~TreeWalkerValue}.\n   *\n   * You may specify additional options for the tree walker. See {@link module:engine/model/treewalker~TreeWalker} for\n   * a full list of available options.\n   *\n   * @method getItems\n   * @param {Object} options Object with configuration options. See {@link module:engine/model/treewalker~TreeWalker}.\n   * @returns {Iterable.<module:engine/model/item~Item>}\n   */\n\n\t}, {\n\t\tkey: 'getItems',\n\t\tvalue: regeneratorRuntime.mark(function getItems() {\n\t\t\tvar options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n\n\t\t\tvar treeWalker, _iteratorNormalCompletion, _didIteratorError, _iteratorError, _iterator, _step, _value;\n\n\t\t\treturn regeneratorRuntime.wrap(function getItems$(_context2) {\n\t\t\t\twhile (1) {\n\t\t\t\t\tswitch (_context2.prev = _context2.next) {\n\t\t\t\t\t\tcase 0:\n\t\t\t\t\t\t\toptions.boundaries = this;\n\t\t\t\t\t\t\toptions.ignoreElementEnd = true;\n\n\t\t\t\t\t\t\ttreeWalker = new _treewalker2.default(options);\n\t\t\t\t\t\t\t_iteratorNormalCompletion = true;\n\t\t\t\t\t\t\t_didIteratorError = false;\n\t\t\t\t\t\t\t_iteratorError = undefined;\n\t\t\t\t\t\t\t_context2.prev = 6;\n\t\t\t\t\t\t\t_iterator = treeWalker[Symbol.iterator]();\n\n\t\t\t\t\t\tcase 8:\n\t\t\t\t\t\t\tif (_iteratorNormalCompletion = (_step = _iterator.next()).done) {\n\t\t\t\t\t\t\t\t_context2.next = 15;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t_value = _step.value;\n\t\t\t\t\t\t\t_context2.next = 12;\n\t\t\t\t\t\t\treturn _value.item;\n\n\t\t\t\t\t\tcase 12:\n\t\t\t\t\t\t\t_iteratorNormalCompletion = true;\n\t\t\t\t\t\t\t_context2.next = 8;\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase 15:\n\t\t\t\t\t\t\t_context2.next = 21;\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase 17:\n\t\t\t\t\t\t\t_context2.prev = 17;\n\t\t\t\t\t\t\t_context2.t0 = _context2['catch'](6);\n\t\t\t\t\t\t\t_didIteratorError = true;\n\t\t\t\t\t\t\t_iteratorError = _context2.t0;\n\n\t\t\t\t\t\tcase 21:\n\t\t\t\t\t\t\t_context2.prev = 21;\n\t\t\t\t\t\t\t_context2.prev = 22;\n\n\t\t\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\tcase 24:\n\t\t\t\t\t\t\t_context2.prev = 24;\n\n\t\t\t\t\t\t\tif (!_didIteratorError) {\n\t\t\t\t\t\t\t\t_context2.next = 27;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\tthrow _iteratorError;\n\n\t\t\t\t\t\tcase 27:\n\t\t\t\t\t\t\treturn _context2.finish(24);\n\n\t\t\t\t\t\tcase 28:\n\t\t\t\t\t\t\treturn _context2.finish(21);\n\n\t\t\t\t\t\tcase 29:\n\t\t\t\t\t\tcase 'end':\n\t\t\t\t\t\t\treturn _context2.stop();\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}, getItems, this, [[6, 17, 21, 29], [22,, 24, 28]]);\n\t\t})\n\n\t\t/**\n   * Returns an iterator that iterates over all {@link module:engine/model/position~Position positions} that are boundaries or\n   * contained in this range.\n   *\n   * This method uses {@link module:engine/model/treewalker~TreeWalker} with `boundaries` set to this range. However it returns only\n   * {@link module:engine/model/position~Position positions}, not {@link module:engine/model/treewalker~TreeWalkerValue}.\n   *\n   * You may specify additional options for the tree walker. See {@link module:engine/model/treewalker~TreeWalker} for\n   * a full list of available options.\n   *\n   * @param {Object} options Object with configuration options. See {@link module:engine/model/treewalker~TreeWalker}.\n   * @returns {Iterable.<module:engine/model/position~Position>}\n   */\n\n\t}, {\n\t\tkey: 'getPositions',\n\t\tvalue: regeneratorRuntime.mark(function getPositions() {\n\t\t\tvar options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n\n\t\t\tvar treeWalker, _iteratorNormalCompletion2, _didIteratorError2, _iteratorError2, _iterator2, _step2, _value2;\n\n\t\t\treturn regeneratorRuntime.wrap(function getPositions$(_context3) {\n\t\t\t\twhile (1) {\n\t\t\t\t\tswitch (_context3.prev = _context3.next) {\n\t\t\t\t\t\tcase 0:\n\t\t\t\t\t\t\toptions.boundaries = this;\n\n\t\t\t\t\t\t\ttreeWalker = new _treewalker2.default(options);\n\t\t\t\t\t\t\t_context3.next = 4;\n\t\t\t\t\t\t\treturn treeWalker.position;\n\n\t\t\t\t\t\tcase 4:\n\t\t\t\t\t\t\t_iteratorNormalCompletion2 = true;\n\t\t\t\t\t\t\t_didIteratorError2 = false;\n\t\t\t\t\t\t\t_iteratorError2 = undefined;\n\t\t\t\t\t\t\t_context3.prev = 7;\n\t\t\t\t\t\t\t_iterator2 = treeWalker[Symbol.iterator]();\n\n\t\t\t\t\t\tcase 9:\n\t\t\t\t\t\t\tif (_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done) {\n\t\t\t\t\t\t\t\t_context3.next = 16;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t_value2 = _step2.value;\n\t\t\t\t\t\t\t_context3.next = 13;\n\t\t\t\t\t\t\treturn _value2.nextPosition;\n\n\t\t\t\t\t\tcase 13:\n\t\t\t\t\t\t\t_iteratorNormalCompletion2 = true;\n\t\t\t\t\t\t\t_context3.next = 9;\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase 16:\n\t\t\t\t\t\t\t_context3.next = 22;\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase 18:\n\t\t\t\t\t\t\t_context3.prev = 18;\n\t\t\t\t\t\t\t_context3.t0 = _context3['catch'](7);\n\t\t\t\t\t\t\t_didIteratorError2 = true;\n\t\t\t\t\t\t\t_iteratorError2 = _context3.t0;\n\n\t\t\t\t\t\tcase 22:\n\t\t\t\t\t\t\t_context3.prev = 22;\n\t\t\t\t\t\t\t_context3.prev = 23;\n\n\t\t\t\t\t\t\tif (!_iteratorNormalCompletion2 && _iterator2.return) {\n\t\t\t\t\t\t\t\t_iterator2.return();\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\tcase 25:\n\t\t\t\t\t\t\t_context3.prev = 25;\n\n\t\t\t\t\t\t\tif (!_didIteratorError2) {\n\t\t\t\t\t\t\t\t_context3.next = 28;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\tthrow _iteratorError2;\n\n\t\t\t\t\t\tcase 28:\n\t\t\t\t\t\t\treturn _context3.finish(25);\n\n\t\t\t\t\t\tcase 29:\n\t\t\t\t\t\t\treturn _context3.finish(22);\n\n\t\t\t\t\t\tcase 30:\n\t\t\t\t\t\tcase 'end':\n\t\t\t\t\t\t\treturn _context3.stop();\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}, getPositions, this, [[7, 18, 22, 30], [23,, 25, 29]]);\n\t\t})\n\n\t\t/**\n   * Returns a range that is a result of transforming this range by given `delta`.\n   *\n   * **Note:** transformation may break one range into multiple ranges (e.g. when a part of the range is\n   * moved to a different part of document tree). For this reason, an array is returned by this method and it\n   * may contain one or more `Range` instances.\n   *\n   * @param {module:engine/model/delta/delta~Delta} delta Delta to transform range by.\n   * @returns {Array.<module:engine/model/range~Range>} Range which is the result of transformation.\n   */\n\n\t}, {\n\t\tkey: 'getTransformedByDelta',\n\t\tvalue: function getTransformedByDelta(delta) {\n\t\t\tvar ranges = [Range.createFromRange(this)];\n\n\t\t\t// Operation types that a range can be transformed by.\n\t\t\tvar supportedTypes = new Set(['insert', 'move', 'remove', 'reinsert']);\n\n\t\t\tvar _iteratorNormalCompletion3 = true;\n\t\t\tvar _didIteratorError3 = false;\n\t\t\tvar _iteratorError3 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator3 = delta.operations[Symbol.iterator](), _step3; !(_iteratorNormalCompletion3 = (_step3 = _iterator3.next()).done); _iteratorNormalCompletion3 = true) {\n\t\t\t\t\tvar operation = _step3.value;\n\n\t\t\t\t\tif (supportedTypes.has(operation.type)) {\n\t\t\t\t\t\tfor (var i = 0; i < ranges.length; i++) {\n\t\t\t\t\t\t\tvar result = ranges[i]._getTransformedByDocumentChange(operation.type, delta.type, operation.targetPosition || operation.position, operation.howMany || operation.nodes.maxOffset, operation.sourcePosition);\n\n\t\t\t\t\t\t\tranges.splice.apply(ranges, [i, 1].concat(_toConsumableArray(result)));\n\n\t\t\t\t\t\t\ti += result.length - 1;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError3 = true;\n\t\t\t\t_iteratorError3 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion3 && _iterator3.return) {\n\t\t\t\t\t\t_iterator3.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError3) {\n\t\t\t\t\t\tthrow _iteratorError3;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn ranges;\n\t\t}\n\n\t\t/**\n   * Returns a range that is a result of transforming this range by multiple `deltas`.\n   *\n   * **Note:** transformation may break one range into multiple ranges (e.g. when a part of the range is\n   * moved to a different part of document tree). For this reason, an array is returned by this method and it\n   * may contain one or more `Range` instances.\n   *\n   * @param {Iterable.<module:engine/model/delta~Delta>} deltas Deltas to transform the range by.\n   * @returns {Array.<module:engine/model/range~Range>} Range which is the result of transformation.\n   */\n\n\t}, {\n\t\tkey: 'getTransformedByDeltas',\n\t\tvalue: function getTransformedByDeltas(deltas) {\n\t\t\tvar ranges = [Range.createFromRange(this)];\n\n\t\t\tvar _iteratorNormalCompletion4 = true;\n\t\t\tvar _didIteratorError4 = false;\n\t\t\tvar _iteratorError4 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator4 = deltas[Symbol.iterator](), _step4; !(_iteratorNormalCompletion4 = (_step4 = _iterator4.next()).done); _iteratorNormalCompletion4 = true) {\n\t\t\t\t\tvar delta = _step4.value;\n\n\t\t\t\t\tfor (var _i = 0; _i < ranges.length; _i++) {\n\t\t\t\t\t\tvar result = ranges[_i].getTransformedByDelta(delta);\n\n\t\t\t\t\t\tranges.splice.apply(ranges, [_i, 1].concat(_toConsumableArray(result)));\n\t\t\t\t\t\t_i += result.length - 1;\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\t// It may happen that a range is split into two, and then the part of second \"piece\" is moved into first\n\t\t\t\t// \"piece\". In this case we will have incorrect third rage, which should not be included in the result --\n\t\t\t\t// because it is already included in first \"piece\". In this loop we are looking for all such ranges that\n\t\t\t\t// are inside other ranges and we simply remove them.\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError4 = true;\n\t\t\t\t_iteratorError4 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion4 && _iterator4.return) {\n\t\t\t\t\t\t_iterator4.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError4) {\n\t\t\t\t\t\tthrow _iteratorError4;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tfor (var i = 0; i < ranges.length; i++) {\n\t\t\t\tvar range = ranges[i];\n\n\t\t\t\tfor (var j = i + 1; j < ranges.length; j++) {\n\t\t\t\t\tvar next = ranges[j];\n\n\t\t\t\t\tif (range.containsRange(next) || next.containsRange(range) || range.isEqual(next)) {\n\t\t\t\t\t\tranges.splice(j, 1);\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn ranges;\n\t\t}\n\n\t\t/**\n   * Returns a range that is a result of transforming this range by a change in the model document.\n   *\n   * @protected\n   * @param {'insert'|'move'|'remove'|'reinsert'} type Change type.\n   * @param {String} deltaType Type of delta that introduced the change.\n   * @param {module:engine/model/position~Position} targetPosition Position before the first changed node.\n   * @param {Number} howMany How many nodes has been changed.\n   * @param {module:engine/model/position~Position} sourcePosition Source position of changes.\n   * @returns {Array.<module:engine/model/range~Range>}\n   */\n\n\t}, {\n\t\tkey: '_getTransformedByDocumentChange',\n\t\tvalue: function _getTransformedByDocumentChange(type, deltaType, targetPosition, howMany, sourcePosition) {\n\t\t\tif (type == 'insert') {\n\t\t\t\treturn this._getTransformedByInsertion(targetPosition, howMany, false, false);\n\t\t\t} else {\n\t\t\t\tvar ranges = this._getTransformedByMove(sourcePosition, targetPosition, howMany);\n\n\t\t\t\tif (deltaType == 'split' && this.containsPosition(sourcePosition)) {\n\t\t\t\t\t// Special case for splitting element inside range.\n\t\t\t\t\t// <p>f[ooba]r</p> -> <p>f[oo</p><p>ba]r</p>\n\t\t\t\t\tranges[0].end = ranges[1].end;\n\t\t\t\t\tranges.pop();\n\t\t\t\t} else if (deltaType == 'merge' && type == 'move' && this.isCollapsed && ranges[0].start.isEqual(sourcePosition)) {\n\t\t\t\t\t// Special case when collapsed range is in merged element.\n\t\t\t\t\t// <p>foo</p><p>[]bar{}</p> -> <p>foo[]bar{}</p>\n\t\t\t\t\tranges[0] = new Range(targetPosition.getShiftedBy(this.start.offset));\n\t\t\t\t}\n\n\t\t\t\treturn ranges;\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Returns an array containing one or two {@link ~Range ranges} that are a result of transforming this\n   * {@link ~Range range} by inserting `howMany` nodes at `insertPosition`. Two {@link ~Range ranges} are\n   * returned if the insertion was inside this {@link ~Range range} and `spread` is set to `true`.\n   *\n   * Examples:\n   *\n   *\t\tlet range = new Range( new Position( root, [ 2, 7 ] ), new Position( root, [ 4, 0, 1 ] ) );\n   *\t\tlet transformed = range._getTransformedByInsertion( new Position( root, [ 1 ] ), 2 );\n   *\t\t// transformed array has one range from [ 4, 7 ] to [ 6, 0, 1 ]\n   *\n   *\t\ttransformed = range._getTransformedByInsertion( new Position( root, [ 4, 0, 0 ] ), 4 );\n   *\t\t// transformed array has one range from [ 2, 7 ] to [ 4, 0, 5 ]\n   *\n   *\t\ttransformed = range._getTransformedByInsertion( new Position( root, [ 3, 2 ] ), 4 );\n   *\t\t// transformed array has one range, which is equal to original range\n   *\n   *\t\ttransformed = range._getTransformedByInsertion( new Position( root, [ 3, 2 ] ), 4, true );\n   *\t\t// transformed array has two ranges: from [ 2, 7 ] to [ 3, 2 ] and from [ 3, 6 ] to [ 4, 0, 1 ]\n   *\n   *\t\ttransformed = range._getTransformedByInsertion( new Position( root, [ 4, 0, 1 ] ), 4, false, false );\n   *\t\t// transformed array has one range which is equal to original range because insertion is after the range boundary\n   *\n   *\t\ttransformed = range._getTransformedByInsertion( new Position( root, [ 4, 0, 1 ] ), 4, false, true );\n   *\t\t// transformed array has one range: from [ 2, 7 ] to [ 4, 0, 5 ] because range was expanded\n   *\n   * @protected\n   * @param {module:engine/model/position~Position} insertPosition Position where nodes are inserted.\n   * @param {Number} howMany How many nodes are inserted.\n   * @param {Boolean} [spread] Flag indicating whether this {~Range range} should be spread if insertion\n   * was inside the range. Defaults to `false`.\n   * @param {Boolean} [isSticky] Flag indicating whether insertion should expand a range if it is in a place of\n   * range boundary. Defaults to `false`.\n   * @returns {Array.<module:engine/model/range~Range>} Result of the transformation.\n   */\n\n\t}, {\n\t\tkey: '_getTransformedByInsertion',\n\t\tvalue: function _getTransformedByInsertion(insertPosition, howMany) {\n\t\t\tvar spread = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;\n\t\t\tvar isSticky = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : false;\n\n\t\t\tif (spread && this.containsPosition(insertPosition)) {\n\t\t\t\t// Range has to be spread. The first part is from original start to the spread point.\n\t\t\t\t// The other part is from spread point to the original end, but transformed by\n\t\t\t\t// insertion to reflect insertion changes.\n\n\t\t\t\treturn [new Range(this.start, insertPosition), new Range(insertPosition._getTransformedByInsertion(insertPosition, howMany, true), this.end._getTransformedByInsertion(insertPosition, howMany, this.isCollapsed))];\n\t\t\t} else {\n\t\t\t\tvar range = Range.createFromRange(this);\n\n\t\t\t\tvar insertBeforeStart = range.isCollapsed ? true : !isSticky;\n\t\t\t\tvar insertBeforeEnd = range.isCollapsed ? true : isSticky;\n\n\t\t\t\trange.start = range.start._getTransformedByInsertion(insertPosition, howMany, insertBeforeStart);\n\t\t\t\trange.end = range.end._getTransformedByInsertion(insertPosition, howMany, insertBeforeEnd);\n\n\t\t\t\treturn [range];\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Returns an array containing {@link ~Range ranges} that are a result of transforming this\n   * {@link ~Range range} by moving `howMany` nodes from `sourcePosition` to `targetPosition`.\n   *\n   * @protected\n   * @param {module:engine/model/position~Position} sourcePosition Position from which nodes are moved.\n   * @param {module:engine/model/position~Position} targetPosition Position to where nodes are moved.\n   * @param {Number} howMany How many nodes are moved.\n   * @returns {Array.<module:engine/model/range~Range>} Result of the transformation.\n   */\n\n\t}, {\n\t\tkey: '_getTransformedByMove',\n\t\tvalue: function _getTransformedByMove(sourcePosition, targetPosition, howMany) {\n\t\t\tif (this.isCollapsed) {\n\t\t\t\tvar newPos = this.start._getTransformedByMove(sourcePosition, targetPosition, howMany, true, false);\n\n\t\t\t\treturn [new Range(newPos)];\n\t\t\t}\n\n\t\t\tvar result = void 0;\n\n\t\t\tvar moveRange = new Range(sourcePosition, sourcePosition.getShiftedBy(howMany));\n\n\t\t\tvar differenceSet = this.getDifference(moveRange);\n\t\t\tvar difference = null;\n\n\t\t\tvar common = this.getIntersection(moveRange);\n\n\t\t\tif (differenceSet.length == 1) {\n\t\t\t\t// `moveRange` and this range may intersect.\n\t\t\t\tdifference = new Range(differenceSet[0].start._getTransformedByDeletion(sourcePosition, howMany), differenceSet[0].end._getTransformedByDeletion(sourcePosition, howMany));\n\t\t\t} else if (differenceSet.length == 2) {\n\t\t\t\t// `moveRange` is inside this range.\n\t\t\t\tdifference = new Range(this.start, this.end._getTransformedByDeletion(sourcePosition, howMany));\n\t\t\t} // else, `moveRange` contains this range.\n\n\t\t\tvar insertPosition = targetPosition._getTransformedByDeletion(sourcePosition, howMany);\n\n\t\t\tif (difference) {\n\t\t\t\tresult = difference._getTransformedByInsertion(insertPosition, howMany, common !== null);\n\t\t\t} else {\n\t\t\t\tresult = [];\n\t\t\t}\n\n\t\t\tif (common) {\n\t\t\t\tresult.push(new Range(common.start._getCombined(moveRange.start, insertPosition), common.end._getCombined(moveRange.start, insertPosition)));\n\t\t\t}\n\n\t\t\treturn result;\n\t\t}\n\n\t\t/**\n   * Creates a new range, spreading from specified {@link module:engine/model/position~Position position} to a position moved by\n   * given `shift`. If `shift` is a negative value, shifted position is treated as the beginning of the range.\n   *\n   * @param {module:engine/model/position~Position} position Beginning of the range.\n   * @param {Number} shift How long the range should be.\n   * @returns {module:engine/model/range~Range}\n   */\n\n\t}, {\n\t\tkey: 'isCollapsed',\n\t\tget: function get() {\n\t\t\treturn this.start.isEqual(this.end);\n\t\t}\n\n\t\t/**\n   * Returns whether this range is flat, that is if {@link #start start} position and\n   * {@link #end end} position are in the same {@link module:engine/model/position~Position#parent parent}.\n   *\n   * @type {Boolean}\n   */\n\n\t}, {\n\t\tkey: 'isFlat',\n\t\tget: function get() {\n\t\t\treturn this.start.parent === this.end.parent;\n\t\t}\n\n\t\t/**\n   * Range root element.\n   *\n   * @type {module:engine/model/element~Element|module:engine/model/documentfragment~DocumentFragment}\n   */\n\n\t}, {\n\t\tkey: 'root',\n\t\tget: function get() {\n\t\t\treturn this.start.root;\n\t\t}\n\t}], [{\n\t\tkey: 'createFromPositionAndShift',\n\t\tvalue: function createFromPositionAndShift(position, shift) {\n\t\t\tvar start = position;\n\t\t\tvar end = position.getShiftedBy(shift);\n\n\t\t\treturn shift > 0 ? new this(start, end) : new this(end, start);\n\t\t}\n\n\t\t/**\n   * Creates a range from given parents and offsets.\n   *\n   * @param {module:engine/model/element~Element} startElement Start position parent element.\n   * @param {Number} startOffset Start position offset.\n   * @param {module:engine/model/element~Element} endElement End position parent element.\n   * @param {Number} endOffset End position offset.\n   * @returns {module:engine/model/range~Range}\n   */\n\n\t}, {\n\t\tkey: 'createFromParentsAndOffsets',\n\t\tvalue: function createFromParentsAndOffsets(startElement, startOffset, endElement, endOffset) {\n\t\t\treturn new this(_position2.default.createFromParentAndOffset(startElement, startOffset), _position2.default.createFromParentAndOffset(endElement, endOffset));\n\t\t}\n\n\t\t/**\n   * Creates a new instance of `Range` which is equal to passed range.\n   *\n   * @param {module:engine/model/range~Range} range Range to clone.\n   * @returns {module:engine/model/range~Range}\n   */\n\n\t}, {\n\t\tkey: 'createFromRange',\n\t\tvalue: function createFromRange(range) {\n\t\t\treturn new this(range.start, range.end);\n\t\t}\n\n\t\t/**\n   * Creates a range inside an {@link module:engine/model/element~Element element} which starts before the first child of\n   * that element and ends after the last child of that element.\n   *\n   * @param {module:engine/model/element~Element} element Element which is a parent for the range.\n   * @returns {module:engine/model/range~Range}\n   */\n\n\t}, {\n\t\tkey: 'createIn',\n\t\tvalue: function createIn(element) {\n\t\t\treturn this.createFromParentsAndOffsets(element, 0, element, element.maxOffset);\n\t\t}\n\n\t\t/**\n   * Creates a range that starts before given {@link module:engine/model/item~Item model item} and ends after it.\n   *\n   * @param {module:engine/model/item~Item} item\n   * @returns {module:engine/model/range~Range}\n   */\n\n\t}, {\n\t\tkey: 'createOn',\n\t\tvalue: function createOn(item) {\n\t\t\treturn this.createFromPositionAndShift(_position2.default.createBefore(item), item.offsetSize);\n\t\t}\n\n\t\t/**\n   * Combines all ranges from the passed array into a one range. At least one range has to be passed.\n   * Passed ranges must not have common parts.\n   *\n   * The first range from the array is a reference range. If other ranges starts or ends on the exactly same position where\n   * the reference range, they get combined into one range.\n   *\n   *\t\t[  ][]  [    ][ ][  ref range  ][ ][]  [  ]  // Passed ranges, shown sorted. \"Ref range\" was the first range in original array.\n   *\t\t        [      returned range       ]  [  ]  // The combined range.\n   *\t\t[    ]                                       // The result of the function if the first range was a reference range.\n   *\t            [                           ]        // The result of the function if the third-to-seventh range was a reference range.\n   *\t                                           [  ]  // The result of the function if the last range was a reference range.\n   *\n   * @param {Array.<module:engine/model/range~Range>} ranges Ranges to combine.\n   * @returns {module:engine/model/range~Range} Combined range.\n   */\n\n\t}, {\n\t\tkey: 'createFromRanges',\n\t\tvalue: function createFromRanges(ranges) {\n\t\t\tif (ranges.length === 0) {\n\t\t\t\t/**\n     * At least one range has to be passed.\n     *\n     * @error range-create-from-ranges-empty-array\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('range-create-from-ranges-empty-array: At least one range has to be passed.');\n\t\t\t} else if (ranges.length == 1) {\n\t\t\t\treturn this.createFromRange(ranges[0]);\n\t\t\t}\n\n\t\t\t// 1. Set the first range in `ranges` array as a reference range.\n\t\t\t// If we are going to return just a one range, one of the ranges need to be the reference one.\n\t\t\t// Other ranges will be stuck to that range, if possible.\n\t\t\tvar ref = ranges[0];\n\n\t\t\t// 2. Sort all the ranges so it's easier to process them.\n\t\t\tranges.sort(function (a, b) {\n\t\t\t\treturn a.start.isAfter(b.start);\n\t\t\t});\n\n\t\t\t// 3. Check at which index the reference range is now.\n\t\t\tvar refIndex = ranges.indexOf(ref);\n\n\t\t\t// 4. At this moment we don't need the original range.\n\t\t\t// We are going to modify the result and we need to return a new instance of Range.\n\t\t\t// We have to create a copy of the reference range.\n\t\t\tvar result = new this(ref.start, ref.end);\n\n\t\t\t// 5. Ranges should be checked and glued starting from the range that is closest to the reference range.\n\t\t\t// Since ranges are sorted, start with the range with index that is closest to reference range index.\n\t\t\tfor (var i = refIndex - 1; i >= 0; i++) {\n\t\t\t\tif (ranges[i].end.isEqual(result.start)) {\n\t\t\t\t\tresult.start = _position2.default.createFromPosition(ranges[i].start);\n\t\t\t\t} else {\n\t\t\t\t\t// If ranges are not starting/ending at the same position there is no point in looking further.\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// 6. Ranges should be checked and glued starting from the range that is closest to the reference range.\n\t\t\t// Since ranges are sorted, start with the range with index that is closest to reference range index.\n\t\t\tfor (var _i2 = refIndex + 1; _i2 < ranges.length; _i2++) {\n\t\t\t\tif (ranges[_i2].start.isEqual(result.end)) {\n\t\t\t\t\tresult.end = _position2.default.createFromPosition(ranges[_i2].end);\n\t\t\t\t} else {\n\t\t\t\t\t// If ranges are not starting/ending at the same position there is no point in looking further.\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn result;\n\t\t}\n\n\t\t/**\n   * Creates a `Range` instance from given plain object (i.e. parsed JSON string).\n   *\n   * @param {Object} json Plain object to be converted to `Range`.\n   * @param {module:engine/model/document~Document} doc Document object that will be range owner.\n   * @returns {module:engine/model/element~Element} `Range` instance created using given plain object.\n   */\n\n\t}, {\n\t\tkey: 'fromJSON',\n\t\tvalue: function fromJSON(json, doc) {\n\t\t\treturn new this(_position2.default.fromJSON(json.start, doc), _position2.default.fromJSON(json.end, doc));\n\t\t}\n\t}]);\n\n\treturn Range;\n}();\n\nexports.default = Range;\n\n/***/ }),\n/* 4 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = mix;\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/mix\n */\n\n/**\n * Copies enumerable properties and symbols from the objects given as 2nd+ parameters to the\n * prototype of first object (a constructor).\n *\n *\t\tclass Editor {\n *\t\t\t...\n *\t\t}\n *\n *\t\tconst SomeMixin = {\n *\t\t\ta() {\n *\t\t\t\treturn 'a';\n *\t\t\t}\n *\t\t};\n *\n *\t\tmix( Editor, SomeMixin, ... );\n *\n *\t\tnew Editor().a(); // -> 'a'\n *\n * Note: Properties which already exist in the base class will not be overriden.\n *\n * @param {Function} [baseClass] Class which prototype will be extended.\n * @param {Object} [...mixins] Objects from which to get properties.\n */\nfunction mix(baseClass) {\n  for (var _len = arguments.length, mixins = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {\n    mixins[_key - 1] = arguments[_key];\n  }\n\n  mixins.forEach(function (mixin) {\n    Object.getOwnPropertyNames(mixin).concat(Object.getOwnPropertySymbols(mixin)).forEach(function (key) {\n      if (key in baseClass.prototype) {\n        return;\n      }\n\n      var sourceDescriptor = Object.getOwnPropertyDescriptor(mixin, key);\n      sourceDescriptor.enumerable = false;\n\n      Object.defineProperty(baseClass.prototype, key, sourceDescriptor);\n    });\n  });\n}\n\n/***/ }),\n/* 5 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if (\"value\" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };\n\nvar _node = __webpack_require__(68);\n\nvar _node2 = _interopRequireDefault(_node);\n\nvar _nodelist = __webpack_require__(69);\n\nvar _nodelist2 = _interopRequireDefault(_nodelist);\n\nvar _text = __webpack_require__(23);\n\nvar _text2 = _interopRequireDefault(_text);\n\nvar _isiterable = __webpack_require__(41);\n\nvar _isiterable2 = _interopRequireDefault(_isiterable);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module engine/model/element\n */\n\n/**\n * Model element. Type of {@link module:engine/model/node~Node node} that has a {@link module:engine/model/element~Element#name name} and\n * {@link module:engine/model/element~Element#getChildren child nodes}.\n *\n * **Important**: see {@link module:engine/model/node~Node} to read about restrictions using `Element` and `Node` API.\n */\nvar Element = function (_Node) {\n\t_inherits(Element, _Node);\n\n\t/**\n  * Creates a model element.\n  *\n  * @param {String} name Element's name.\n  * @param {Object} [attrs] Element's attributes. See {@link module:utils/tomap~toMap} for a list of accepted values.\n  * @param {module:engine/model/node~Node|Iterable.<module:engine/model/node~Node>} [children]\n  * One or more nodes to be inserted as children of created element.\n  */\n\tfunction Element(name, attrs, children) {\n\t\t_classCallCheck(this, Element);\n\n\t\t/**\n   * Element name.\n   *\n   * @member {String} module:engine/model/element~Element#name\n   */\n\t\tvar _this = _possibleConstructorReturn(this, (Element.__proto__ || Object.getPrototypeOf(Element)).call(this, attrs));\n\n\t\t_this.name = name;\n\n\t\t/**\n   * List of children nodes.\n   *\n   * @private\n   * @member {module:engine/model/nodelist~NodeList} module:engine/model/element~Element#_children\n   */\n\t\t_this._children = new _nodelist2.default();\n\n\t\tif (children) {\n\t\t\t_this.insertChildren(0, children);\n\t\t}\n\t\treturn _this;\n\t}\n\n\t/**\n  * Number of this element's children.\n  *\n  * @readonly\n  * @type {Number}\n  */\n\n\n\t_createClass(Element, [{\n\t\tkey: 'is',\n\n\n\t\t/**\n   * Checks whether given model tree object is of given type.\n   *\n   * Read more in {@link module:engine/model/node~Node#is}.\n   *\n   * @param {String} type\n   * @param {String} [name] Element name.\n   * @returns {Boolean}\n   */\n\t\tvalue: function is(type) {\n\t\t\tvar name = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n\n\t\t\tif (!name) {\n\t\t\t\treturn type == 'element' || type == this.name;\n\t\t\t} else {\n\t\t\t\treturn type == 'element' && name == this.name;\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Gets the child at the given index.\n   *\n   * @param {Number} index Index of child.\n   * @returns {module:engine/model/node~Node} Child node.\n   */\n\n\t}, {\n\t\tkey: 'getChild',\n\t\tvalue: function getChild(index) {\n\t\t\treturn this._children.getNode(index);\n\t\t}\n\n\t\t/**\n   * Returns an iterator that iterates over all of this element's children.\n   *\n   * @returns {Iterable.<module:engine/model/node~Node>}\n   */\n\n\t}, {\n\t\tkey: 'getChildren',\n\t\tvalue: function getChildren() {\n\t\t\treturn this._children[Symbol.iterator]();\n\t\t}\n\n\t\t/**\n   * Returns an index of the given child node. Returns `null` if given node is not a child of this element.\n   *\n   * @param {module:engine/model/node~Node} node Child node to look for.\n   * @returns {Number} Child node's index in this element.\n   */\n\n\t}, {\n\t\tkey: 'getChildIndex',\n\t\tvalue: function getChildIndex(node) {\n\t\t\treturn this._children.getNodeIndex(node);\n\t\t}\n\n\t\t/**\n   * Returns the starting offset of given child. Starting offset is equal to the sum of\n   * {module:engine/model/node~Node#offsetSize offset sizes} of all node's siblings that are before it. Returns `null` if\n   * given node is not a child of this element.\n   *\n   * @param {module:engine/model/node~Node} node Child node to look for.\n   * @returns {Number} Child node's starting offset.\n   */\n\n\t}, {\n\t\tkey: 'getChildStartOffset',\n\t\tvalue: function getChildStartOffset(node) {\n\t\t\treturn this._children.getNodeStartOffset(node);\n\t\t}\n\n\t\t/**\n   * Creates a copy of this element and returns it. Created element has same name and attributes as original element.\n   * If clone is not deep, children of copied element are references to the same nodes as in original element.\n   * If clone is deep, original element's children are also cloned.\n   *\n   * @param {Boolean} [deep=false] Decides whether children of this element should also be cloned (`true`) or not (`false`).\n   */\n\n\t}, {\n\t\tkey: 'clone',\n\t\tvalue: function clone() {\n\t\t\tvar deep = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : false;\n\n\t\t\tvar children = deep ? Array.from(this._children).map(function (node) {\n\t\t\t\treturn node.clone();\n\t\t\t}) : Array.from(this._children);\n\n\t\t\treturn new Element(this.name, this.getAttributes(), children);\n\t\t}\n\n\t\t/**\n   * Returns index of a node that occupies given offset. If given offset is too low, returns `0`. If given offset is\n   * too high, returns {@link module:engine/model/element~Element#getChildIndex index after last child}.\n   *\n   *\t\tconst textNode = new Text( 'foo' );\n   *\t\tconst pElement = new Element( 'p' );\n   *\t\tconst divElement = new Element( [ textNode, pElement ] );\n   *\t\tdivElement.offsetToIndex( -1 ); // Returns 0, because offset is too low.\n   *\t\tdivElement.offsetToIndex( 0 ); // Returns 0, because offset 0 is taken by `textNode` which is at index 0.\n   *\t\tdivElement.offsetToIndex( 1 ); // Returns 0, because `textNode` has `offsetSize` equal to 3, so it occupies offset 1 too.\n   *\t\tdivElement.offsetToIndex( 2 ); // Returns 0.\n   *\t\tdivElement.offsetToIndex( 3 ); // Returns 1.\n   *\t\tdivElement.offsetToIndex( 4 ); // Returns 2. There are no nodes at offset 4, so last available index is returned.\n   *\n   * @param {Number} offset Offset to look for.\n   * @returns {Number}\n   */\n\n\t}, {\n\t\tkey: 'offsetToIndex',\n\t\tvalue: function offsetToIndex(offset) {\n\t\t\treturn this._children.offsetToIndex(offset);\n\t\t}\n\n\t\t/**\n   * {@link module:engine/model/element~Element#insertChildren Inserts} one or more nodes at the end of this element.\n   *\n   * @param {module:engine/model/node~Node|Iterable.<module:engine/model/node~Node>} nodes Nodes to be inserted.\n   */\n\n\t}, {\n\t\tkey: 'appendChildren',\n\t\tvalue: function appendChildren(nodes) {\n\t\t\tthis.insertChildren(this.childCount, nodes);\n\t\t}\n\n\t\t/**\n   * Inserts one or more nodes at the given index and sets {@link module:engine/model/node~Node#parent parent} of these nodes\n   * to this element.\n   *\n   * @param {Number} index Index at which nodes should be inserted.\n   * @param {module:engine/model/node~Node|Iterable.<module:engine/model/node~Node>} nodes Nodes to be inserted.\n   */\n\n\t}, {\n\t\tkey: 'insertChildren',\n\t\tvalue: function insertChildren(index, nodes) {\n\t\t\tnodes = normalize(nodes);\n\n\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\tvar _didIteratorError = false;\n\t\t\tvar _iteratorError = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator = nodes[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\tvar node = _step.value;\n\n\t\t\t\t\tnode.parent = this;\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError = true;\n\t\t\t\t_iteratorError = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tthis._children.insertNodes(index, nodes);\n\t\t}\n\n\t\t/**\n   * Removes one or more nodes starting at the given index and sets\n   * {@link module:engine/model/node~Node#parent parent} of these nodes to `null`.\n   *\n   * @param {Number} index Index of the first node to remove.\n   * @param {Number} [howMany=1] Number of nodes to remove.\n   * @returns {Array.<module:engine/model/node~Node>} Array containing removed nodes.\n   */\n\n\t}, {\n\t\tkey: 'removeChildren',\n\t\tvalue: function removeChildren(index) {\n\t\t\tvar howMany = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 1;\n\n\t\t\tvar nodes = this._children.removeNodes(index, howMany);\n\n\t\t\tvar _iteratorNormalCompletion2 = true;\n\t\t\tvar _didIteratorError2 = false;\n\t\t\tvar _iteratorError2 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator2 = nodes[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {\n\t\t\t\t\tvar node = _step2.value;\n\n\t\t\t\t\tnode.parent = null;\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError2 = true;\n\t\t\t\t_iteratorError2 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion2 && _iterator2.return) {\n\t\t\t\t\t\t_iterator2.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError2) {\n\t\t\t\t\t\tthrow _iteratorError2;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn nodes;\n\t\t}\n\n\t\t/**\n   * Returns a descendant node by its path relative to this element.\n   *\n   *\t\t// <this>a<b>c</b></this>\n   *\t\tthis.getNodeByPath( [ 0 ] );     // -> \"a\"\n   *\t\tthis.getNodeByPath( [ 1 ] );     // -> <b>\n   *\t\tthis.getNodeByPath( [ 1, 0 ] );  // -> \"c\"\n   *\n   * @param {Array.<Number>} relativePath Path of the node to find, relative to this element.\n   * @returns {module:engine/model/node~Node}\n   */\n\n\t}, {\n\t\tkey: 'getNodeByPath',\n\t\tvalue: function getNodeByPath(relativePath) {\n\t\t\tvar node = this;\n\n\t\t\tvar _iteratorNormalCompletion3 = true;\n\t\t\tvar _didIteratorError3 = false;\n\t\t\tvar _iteratorError3 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator3 = relativePath[Symbol.iterator](), _step3; !(_iteratorNormalCompletion3 = (_step3 = _iterator3.next()).done); _iteratorNormalCompletion3 = true) {\n\t\t\t\t\tvar index = _step3.value;\n\n\t\t\t\t\tnode = node.getChild(index);\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError3 = true;\n\t\t\t\t_iteratorError3 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion3 && _iterator3.return) {\n\t\t\t\t\t\t_iterator3.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError3) {\n\t\t\t\t\t\tthrow _iteratorError3;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn node;\n\t\t}\n\n\t\t/**\n   * Converts `Element` instance to plain object and returns it. Takes care of converting all of this element's children.\n   *\n   * @returns {Object} `Element` instance converted to plain object.\n   */\n\n\t}, {\n\t\tkey: 'toJSON',\n\t\tvalue: function toJSON() {\n\t\t\tvar json = _get(Element.prototype.__proto__ || Object.getPrototypeOf(Element.prototype), 'toJSON', this).call(this);\n\n\t\t\tjson.name = this.name;\n\n\t\t\tif (this._children.length > 0) {\n\t\t\t\tjson.children = [];\n\n\t\t\t\tvar _iteratorNormalCompletion4 = true;\n\t\t\t\tvar _didIteratorError4 = false;\n\t\t\t\tvar _iteratorError4 = undefined;\n\n\t\t\t\ttry {\n\t\t\t\t\tfor (var _iterator4 = this._children[Symbol.iterator](), _step4; !(_iteratorNormalCompletion4 = (_step4 = _iterator4.next()).done); _iteratorNormalCompletion4 = true) {\n\t\t\t\t\t\tvar node = _step4.value;\n\n\t\t\t\t\t\tjson.children.push(node.toJSON());\n\t\t\t\t\t}\n\t\t\t\t} catch (err) {\n\t\t\t\t\t_didIteratorError4 = true;\n\t\t\t\t\t_iteratorError4 = err;\n\t\t\t\t} finally {\n\t\t\t\t\ttry {\n\t\t\t\t\t\tif (!_iteratorNormalCompletion4 && _iterator4.return) {\n\t\t\t\t\t\t\t_iterator4.return();\n\t\t\t\t\t\t}\n\t\t\t\t\t} finally {\n\t\t\t\t\t\tif (_didIteratorError4) {\n\t\t\t\t\t\t\tthrow _iteratorError4;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn json;\n\t\t}\n\n\t\t/**\n   * Creates an `Element` instance from given plain object (i.e. parsed JSON string).\n   * Converts `Element` children to proper nodes.\n   *\n   * @param {Object} json Plain object to be converted to `Element`.\n   * @returns {module:engine/model/element~Element} `Element` instance created using given plain object.\n   */\n\n\t}, {\n\t\tkey: 'childCount',\n\t\tget: function get() {\n\t\t\treturn this._children.length;\n\t\t}\n\n\t\t/**\n   * Sum of {module:engine/model/node~Node#offsetSize offset sizes} of all of this element's children.\n   *\n   * @readonly\n   * @type {Number}\n   */\n\n\t}, {\n\t\tkey: 'maxOffset',\n\t\tget: function get() {\n\t\t\treturn this._children.maxOffset;\n\t\t}\n\n\t\t/**\n   * Is `true` if there are no nodes inside this element, `false` otherwise.\n   *\n   * @readonly\n   * @type {Boolean}\n   */\n\n\t}, {\n\t\tkey: 'isEmpty',\n\t\tget: function get() {\n\t\t\treturn this.childCount === 0;\n\t\t}\n\t}], [{\n\t\tkey: 'fromJSON',\n\t\tvalue: function fromJSON(json) {\n\t\t\tvar children = null;\n\n\t\t\tif (json.children) {\n\t\t\t\tchildren = [];\n\n\t\t\t\tvar _iteratorNormalCompletion5 = true;\n\t\t\t\tvar _didIteratorError5 = false;\n\t\t\t\tvar _iteratorError5 = undefined;\n\n\t\t\t\ttry {\n\t\t\t\t\tfor (var _iterator5 = json.children[Symbol.iterator](), _step5; !(_iteratorNormalCompletion5 = (_step5 = _iterator5.next()).done); _iteratorNormalCompletion5 = true) {\n\t\t\t\t\t\tvar child = _step5.value;\n\n\t\t\t\t\t\tif (child.name) {\n\t\t\t\t\t\t\t// If child has name property, it is an Element.\n\t\t\t\t\t\t\tchildren.push(Element.fromJSON(child));\n\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\t// Otherwise, it is a Text node.\n\t\t\t\t\t\t\tchildren.push(_text2.default.fromJSON(child));\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t} catch (err) {\n\t\t\t\t\t_didIteratorError5 = true;\n\t\t\t\t\t_iteratorError5 = err;\n\t\t\t\t} finally {\n\t\t\t\t\ttry {\n\t\t\t\t\t\tif (!_iteratorNormalCompletion5 && _iterator5.return) {\n\t\t\t\t\t\t\t_iterator5.return();\n\t\t\t\t\t\t}\n\t\t\t\t\t} finally {\n\t\t\t\t\t\tif (_didIteratorError5) {\n\t\t\t\t\t\t\tthrow _iteratorError5;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn new Element(json.name, json.attributes, children);\n\t\t}\n\t}]);\n\n\treturn Element;\n}(_node2.default);\n\n// Converts strings to Text and non-iterables to arrays.\n//\n// @param {String|module:engine/model/node~Node|Iterable.<String|module:engine/model/node~Node>}\n// @return {Iterable.<module:engine/model/node~Node>}\n\n\nexports.default = Element;\nfunction normalize(nodes) {\n\t// Separate condition because string is iterable.\n\tif (typeof nodes == 'string') {\n\t\treturn [new _text2.default(nodes)];\n\t}\n\n\tif (!(0, _isiterable2.default)(nodes)) {\n\t\tnodes = [nodes];\n\t}\n\n\t// Array.from to enable .map() on non-arrays.\n\treturn Array.from(nodes).map(function (node) {\n\t\treturn typeof node == 'string' ? new _text2.default(node) : node;\n\t});\n}\n\n/***/ }),\n/* 6 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\nexports.TemplateIfBinding = exports.TemplateToBinding = exports.TemplateBinding = undefined;\n\nvar _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if (\"value\" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };\n\nvar _slicedToArray = function () { function sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i[\"return\"]) _i[\"return\"](); } finally { if (_d) throw _e; } } return _arr; } return function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return sliceIterator(arr, i); } else { throw new TypeError(\"Invalid attempt to destructure non-iterable instance\"); } }; }();\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module ui/template\n */\n\n/* global document */\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nvar _mix = __webpack_require__(4);\n\nvar _mix2 = _interopRequireDefault(_mix);\n\nvar _emittermixin = __webpack_require__(8);\n\nvar _emittermixin2 = _interopRequireDefault(_emittermixin);\n\nvar _collection = __webpack_require__(78);\n\nvar _collection2 = _interopRequireDefault(_collection);\n\nvar _view = __webpack_require__(7);\n\nvar _view2 = _interopRequireDefault(_view);\n\nvar _viewcollection = __webpack_require__(121);\n\nvar _viewcollection2 = _interopRequireDefault(_viewcollection);\n\nvar _cloneDeepWith = __webpack_require__(483);\n\nvar _cloneDeepWith2 = _interopRequireDefault(_cloneDeepWith);\n\nvar _isObject = __webpack_require__(13);\n\nvar _isObject2 = _interopRequireDefault(_isObject);\n\nvar _log = __webpack_require__(54);\n\nvar _log2 = _interopRequireDefault(_log);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _toConsumableArray(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } else { return Array.from(arr); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nvar xhtmlNs = 'http://www.w3.org/1999/xhtml';\n\n/**\n * A basic Template class. It renders DOM HTMLElement or Text from {@link module:ui/template~TemplateDefinition} and supports\n * element attributes, children, bindings to {@link module:utils/observablemixin~ObservableMixin} instances and DOM events\n * propagation. For example:\n *\n *\t\tnew Template( {\n *\t\t\ttag: 'p',\n *\t\t\tattributes: {\n *\t\t\t\tclass: 'foo',\n *\t\t\t\tstyle: {\n *\t\t\t\t\tbackgroundColor: 'yellow'\n *\t\t\t\t}\n *\t\t\t},\n *\t\t\tchildren: [\n *\t\t\t\t'A paragraph.'\n *\t\t\t]\n *\t\t} ).render();\n *\n * will render the following HTMLElement:\n *\n *\t\t<p class=\"foo\" style=\"background-color: yellow;\">A paragraph.</p>\n *\n * See {@link module:ui/template~TemplateDefinition} to know more about templates and complex template definitions.\n *\n* @mixes module:utils/emittermixin~EmitterMixin\n */\n\nvar Template = function () {\n\t/**\n  * Creates an instance of the {@link ~Template} class.\n  *\n  * @param {module:ui/template~TemplateDefinition} def The definition of the template.\n  */\n\tfunction Template(def) {\n\t\t_classCallCheck(this, Template);\n\n\t\tObject.assign(this, normalize(clone(def)));\n\n\t\t/**\n   * Indicates whether this particular Template instance has been\n   * {@link #render rendered}.\n   *\n   * @readonly\n   * @protected\n   * @member {Boolean}\n   */\n\t\tthis._isRendered = false;\n\n\t\t/**\n   * Tag of this template, i.e. `div`, indicating that the instance will render\n   * to an HTMLElement.\n   *\n   * @member {String} #tag\n   */\n\n\t\t/**\n   * Text of this template, indicating that the instance will render to a DOM Text.\n   *\n   * @member {Array.<String|module:ui/template~TemplateValueSchema>} #text\n   */\n\n\t\t/**\n   * Attributes of this template, i.e. `{ id: [ 'ck-id' ] }`, corresponding with\n   * HTML attributes on HTMLElement.\n   *\n   * Note: Only when {@link #tag} is defined.\n   *\n   * @member {Object} #attributes\n   */\n\n\t\t/**\n   * Children of this template; sub–templates. Each one is an independent\n   * instance of {@link ~Template}.\n   *\n   * Note: Only when {@link #tag} is defined.\n   *\n   * @member {module:utils/collection~Collection.<module:ui/template~Template>} #children\n   */\n\n\t\t/**\n   * DOM event listeners of this template.\n   *\n   * @member {Object} #eventListeners\n   */\n\t}\n\n\t/**\n  * Renders a DOM Node (`HTMLElement` or `Text`) out of the template.\n  *\n  * @see #apply\n  *\n  * @returns {HTMLElement|Text}\n  */\n\n\n\t_createClass(Template, [{\n\t\tkey: 'render',\n\t\tvalue: function render() {\n\t\t\tvar node = this._renderNode(undefined, true);\n\n\t\t\tthis._isRendered = true;\n\n\t\t\treturn node;\n\t\t}\n\n\t\t/**\n   * Applies the template to an existing DOM Node, either `HTMLElement` or `Text`.\n   *\n   * **Note:** No new DOM nodes (HTMLElement or Text) will be created. Applying extends attributes\n   * ({@link module:ui/template~TemplateDefinition attributes}) and listeners ({@link module:ui/template~TemplateDefinition on}) only.\n   *\n   *\t\tconst element = document.createElement( 'div' );\n   *\t\tconst bind = Template.bind( observableInstance, emitterInstance );\n   *\n   *\t\tnew Template( {\n   *\t\t\tattrs: {\n   *\t\t\t\tid: 'first-div',\n   *\t\t\t\tclass: bind.to( 'divClass' )\n   *\t\t\t},\n   *\t\t\ton: {\n   *\t\t\t\tclick: bind( 'elementClicked' ) // Will be fired by the observableInstance.\n   *\t\t\t}\n   *\t\t\tchildren: [\n   *\t\t\t\t'Div text.'\n   *\t\t\t]\n   *\t\t} ).apply( element );\n   *\n   *\t\telement.outerHTML == \"<div id=\"first-div\" class=\"my-div\">Div text.</div>\"\n   *\n   * @see module:ui/template~Template#render\n   * @param {Node} element Root element for the template to apply.\n   */\n\n\t}, {\n\t\tkey: 'apply',\n\t\tvalue: function apply(node) {\n\t\t\tif (!node) {\n\t\t\t\t/**\n     * No DOM Node specified.\n     *\n     * @error ui-template-wrong-syntax\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('ui-template-wrong-node: No DOM Node specified.');\n\t\t\t}\n\n\t\t\treturn this._renderNode(node);\n\t\t}\n\n\t\t/**\n   * An entry point to the interface which allows binding DOM nodes to {@link module:utils/observablemixin~ObservableMixin}.\n   * There are two types of bindings:\n   *\n   * * `HTMLElement` attributes or Text Node `textContent` can be synchronized with {@link module:utils/observablemixin~ObservableMixin}\n   * instance attributes. See {@link module:ui/template~BindChain#to} and {@link module:ui/template~BindChain#if}.\n   *\n   * * DOM events fired on `HTMLElement` can be propagated through {@link module:utils/observablemixin~ObservableMixin}.\n   * See {@link module:ui/template~BindChain#to}.\n   *\n   * @param {module:utils/observablemixin~ObservableMixin} observable An instance of ObservableMixin class.\n   * @param {module:utils/emittermixin~EmitterMixin} emitter An instance of `Emitter` class. It listens\n   * to `observable` attribute changes and DOM Events, depending on the binding. Usually {@link module:ui/view~View} instance.\n   * @returns {module:ui/template~BindChain}\n   */\n\n\t}, {\n\t\tkey: '_renderNode',\n\n\n\t\t/**\n   * Renders a DOM Node (either `HTMLElement` or `Text`) out of the template.\n   *\n   * @protected\n   * @param {Node} applyNode If specified, this template will be applied to an existing DOM Node.\n   * @param {Boolean} intoFragment If set, children are rendered into `DocumentFragment`.\n   * @returns {HTMLElement|Text} A rendered Node.\n   */\n\t\tvalue: function _renderNode(applyNode, intoFragment) {\n\t\t\tvar isInvalid = void 0;\n\n\t\t\tif (applyNode) {\n\t\t\t\t// When applying, a definition cannot have \"tag\" and \"text\" at the same time.\n\t\t\t\tisInvalid = this.tag && this.text;\n\t\t\t} else {\n\t\t\t\t// When rendering, a definition must have either \"tag\" or \"text\": XOR( this.tag, this.text ).\n\t\t\t\tisInvalid = this.tag ? this.text : !this.text;\n\t\t\t}\n\n\t\t\tif (isInvalid) {\n\t\t\t\t/**\n     * Node definition cannot have \"tag\" and \"text\" properties at the same time.\n     * Node definition must have either \"tag\" or \"text\" when rendering new Node.\n     *\n     * @error ui-template-wrong-syntax\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('ui-template-wrong-syntax: Node definition must have either \"tag\" or \"text\" when rendering new Node.');\n\t\t\t}\n\n\t\t\treturn this.text ? this._renderText(applyNode) : this._renderElement(applyNode, intoFragment);\n\t\t}\n\n\t\t/**\n   * Renders an `HTMLElement` out of the template.\n   *\n   * @protected\n   * @param {HTMLElement} applyElement If specified, this template will be applied to an existing `HTMLElement`.\n   * @param {Boolean} intoFragment If set, children are rendered into `DocumentFragment`.\n   * @returns {HTMLElement} A rendered `HTMLElement`.\n   */\n\n\t}, {\n\t\tkey: '_renderElement',\n\t\tvalue: function _renderElement(applyElement, intoFragment) {\n\t\t\tvar el = applyElement || document.createElementNS(this.ns || xhtmlNs, this.tag);\n\n\t\t\tthis._renderAttributes(el);\n\n\t\t\t// Invoke children recursively.\n\t\t\tif (intoFragment) {\n\t\t\t\tvar docFragment = document.createDocumentFragment();\n\n\t\t\t\tthis._renderElementChildren(el, docFragment);\n\n\t\t\t\tel.appendChild(docFragment);\n\t\t\t} else {\n\t\t\t\tthis._renderElementChildren(el, el, !!applyElement);\n\t\t\t}\n\n\t\t\t// Setup DOM bindings event listeners.\n\t\t\tthis._setUpListeners(el);\n\n\t\t\treturn el;\n\t\t}\n\n\t\t/**\n   * Renders a `Text` node out of {@link module:ui/template~Template#text}.\n   *\n   * @protected\n   * @param {HTMLElement} textNode If specified, this template instance will be applied to an existing `Text` Node.\n   * @returns {Text} A rendered `Text` node in DOM.\n   */\n\n\t}, {\n\t\tkey: '_renderText',\n\t\tvalue: function _renderText() {\n\t\t\tvar textNode = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : document.createTextNode('');\n\n\t\t\t// Check if this Text Node is bound to Observable. Cases:\n\t\t\t//\t\t{ text: [ Template.bind( ... ).to( ... ) ] }\n\t\t\t//\t\t{ text: [ 'foo', Template.bind( ... ).to( ... ), ... ] }\n\t\t\tif (hasTemplateBinding(this.text)) {\n\t\t\t\tthis._bindToObservable(this.text, textNode, getTextUpdater(textNode));\n\t\t\t}\n\n\t\t\t// Simply set text. Cases:\n\t\t\t// \t\t{ text: [ 'all', 'are', 'static' ] }\n\t\t\t// \t\t{ text: [ 'foo' ] }\n\t\t\telse {\n\t\t\t\t\ttextNode.textContent = this.text.join('');\n\t\t\t\t}\n\n\t\t\treturn textNode;\n\t\t}\n\n\t\t/**\n   * Renders an `HTMLElement` attributes out of {@link module:ui/template~Template#attributes}.\n   *\n   * @protected\n   * @param {HTMLElement} el `HTMLElement` which attributes are to be rendered.\n   */\n\n\t}, {\n\t\tkey: '_renderAttributes',\n\t\tvalue: function _renderAttributes(el) {\n\t\t\tvar attrName = void 0,\n\t\t\t    attrValue = void 0,\n\t\t\t    attrNs = void 0;\n\n\t\t\tif (!this.attributes) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tfor (attrName in this.attributes) {\n\t\t\t\tattrValue = this.attributes[attrName];\n\n\t\t\t\t// Detect custom namespace:\n\t\t\t\t// \t\t{ class: { ns: 'abc', value: Template.bind( ... ).to( ... ) } }\n\t\t\t\tattrNs = (0, _isObject2.default)(attrValue[0]) && attrValue[0].ns ? attrValue[0].ns : null;\n\n\t\t\t\t// Activate binding if one is found. Cases:\n\t\t\t\t// \t\t{ class: [ Template.bind( ... ).to( ... ) ] }\n\t\t\t\t// \t\t{ class: [ 'bar', Template.bind( ... ).to( ... ), 'baz' ] }\n\t\t\t\t// \t\t{ class: { ns: 'abc', value: Template.bind( ... ).to( ... ) } }\n\t\t\t\tif (hasTemplateBinding(attrValue)) {\n\t\t\t\t\tthis._bindToObservable(\n\t\t\t\t\t// Normalize attributes with additional data like namespace:\n\t\t\t\t\t//\t\t{ class: { ns: 'abc', value: [ ... ] } }\n\t\t\t\t\tattrNs ? attrValue[0].value : attrValue, el, getAttributeUpdater(el, attrName, attrNs));\n\t\t\t\t}\n\n\t\t\t\t// Style attribute could be an Object so it needs to be parsed in a specific way.\n\t\t\t\t//\t\tstyle: {\n\t\t\t\t//\t\t\twidth: '100px',\n\t\t\t\t//\t\t\theight: Template.bind( ... ).to( ... )\n\t\t\t\t//\t\t}\n\t\t\t\telse if (attrName == 'style' && typeof attrValue[0] !== 'string') {\n\t\t\t\t\t\tthis._renderStyleAttribute(attrValue[0], el);\n\t\t\t\t\t}\n\n\t\t\t\t\t// Otherwise simply set the static attribute.\n\t\t\t\t\t// \t\t{ class: [ 'foo' ] }\n\t\t\t\t\t// \t\t{ class: [ 'all', 'are', 'static' ] }\n\t\t\t\t\t// \t\t{ class: [ { ns: 'abc', value: [ 'foo' ] } ] }\n\t\t\t\t\telse {\n\t\t\t\t\t\t\tattrValue = attrValue\n\t\t\t\t\t\t\t// Retrieve \"values\" from { class: [ { ns: 'abc', value: [ ... ] } ] }\n\t\t\t\t\t\t\t.map(function (v) {\n\t\t\t\t\t\t\t\treturn v ? v.value || v : v;\n\t\t\t\t\t\t\t})\n\t\t\t\t\t\t\t// Flatten the array.\n\t\t\t\t\t\t\t.reduce(function (p, n) {\n\t\t\t\t\t\t\t\treturn p.concat(n);\n\t\t\t\t\t\t\t}, [])\n\t\t\t\t\t\t\t// Convert into string.\n\t\t\t\t\t\t\t.reduce(arrayValueReducer, '');\n\n\t\t\t\t\t\t\tif (!isFalsy(attrValue)) {\n\t\t\t\t\t\t\t\tel.setAttributeNS(attrNs, attrName, attrValue);\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Renders `style` attribute of an `HTMLElement` based on {@link module:ui/template~Template#attributes}.\n   *\n   * Style attribute is an {Object} with static values:\n   *\n   *\t\tattributes: {\n   * \t\t\tstyle: {\n   * \t\t\t\tcolor: 'red'\n   * \t\t\t}\n   * \t\t}\n   *\n   * or values bound to {@link module:ui/model~Model} properties:\n   *\n   *\t\tattributes: {\n   * \t\t\tstyle: {\n   * \t\t\t\tcolor: bind.to( ... )\n   * \t\t\t}\n   * \t\t}\n   *\n   * Note: `style` attribute is rendered without setting the namespace. It does not seem to be\n   * needed.\n   *\n   * @private\n   * @param {Object} styles module:ui/template~TemplateDefinition.attributes.styles Styles definition.\n   * @param {HTMLElement} el `HTMLElement` which `style` attribute is rendered.\n   */\n\n\t}, {\n\t\tkey: '_renderStyleAttribute',\n\t\tvalue: function _renderStyleAttribute(styles, el) {\n\t\t\tfor (var styleName in styles) {\n\t\t\t\tvar styleValue = styles[styleName];\n\n\t\t\t\t// style: {\n\t\t\t\t//\tcolor: bind.to( 'attribute' )\n\t\t\t\t// }\n\t\t\t\tif (hasTemplateBinding(styleValue)) {\n\t\t\t\t\tthis._bindToObservable([styleValue], el, getStyleUpdater(el, styleName));\n\t\t\t\t}\n\n\t\t\t\t// style: {\n\t\t\t\t//\tcolor: 'red'\n\t\t\t\t// }\n\t\t\t\telse {\n\t\t\t\t\t\tel.style[styleName] = styleValue;\n\t\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Recursively renders `HTMLElement` children from {@link module:ui/template~Template#children}.\n   *\n   * @protected\n   * @param {HTMLElement} element The element which is being rendered.\n   * @param {HTMLElement|DocumentFragment} container `HTMLElement` or `DocumentFragment`\n   * into which children are being rendered. If `shouldApply == true`, then `container === element`.\n   * @param {Boolean} shouldApply Traverse existing DOM structure only, don't modify DOM.\n   */\n\n\t}, {\n\t\tkey: '_renderElementChildren',\n\t\tvalue: function _renderElementChildren(element, container, shouldApply) {\n\t\t\tvar childIndex = 0;\n\n\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\tvar _didIteratorError = false;\n\t\t\tvar _iteratorError = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator = this.children[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\tvar child = _step.value;\n\n\t\t\t\t\tif (isViewCollection(child)) {\n\t\t\t\t\t\tif (!shouldApply) {\n\t\t\t\t\t\t\tchild.setParent(element);\n\n\t\t\t\t\t\t\tvar _iteratorNormalCompletion2 = true;\n\t\t\t\t\t\t\tvar _didIteratorError2 = false;\n\t\t\t\t\t\t\tvar _iteratorError2 = undefined;\n\n\t\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\t\tfor (var _iterator2 = child[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {\n\t\t\t\t\t\t\t\t\tvar view = _step2.value;\n\n\t\t\t\t\t\t\t\t\tcontainer.appendChild(view.element);\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t} catch (err) {\n\t\t\t\t\t\t\t\t_didIteratorError2 = true;\n\t\t\t\t\t\t\t\t_iteratorError2 = err;\n\t\t\t\t\t\t\t} finally {\n\t\t\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\t\t\tif (!_iteratorNormalCompletion2 && _iterator2.return) {\n\t\t\t\t\t\t\t\t\t\t_iterator2.return();\n\t\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\t} finally {\n\t\t\t\t\t\t\t\t\tif (_didIteratorError2) {\n\t\t\t\t\t\t\t\t\t\tthrow _iteratorError2;\n\t\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t} else if (isView(child)) {\n\t\t\t\t\t\tif (!shouldApply) {\n\t\t\t\t\t\t\tcontainer.appendChild(child.element);\n\t\t\t\t\t\t}\n\t\t\t\t\t} else {\n\t\t\t\t\t\tif (shouldApply) {\n\t\t\t\t\t\t\tchild._renderNode(container.childNodes[childIndex++]);\n\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\tcontainer.appendChild(child.render());\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError = true;\n\t\t\t\t_iteratorError = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Activates ~Template#on listeners on a passed `HTMLElement`.\n   *\n   * @protected\n   * @param {HTMLElement} el `HTMLElement` which is being rendered.\n   */\n\n\t}, {\n\t\tkey: '_setUpListeners',\n\t\tvalue: function _setUpListeners(el) {\n\t\t\tvar _this = this;\n\n\t\t\tif (!this.eventListeners) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tvar _loop = function _loop(key) {\n\t\t\t\tvar _key$split = key.split('@'),\n\t\t\t\t    _key$split2 = _slicedToArray(_key$split, 2),\n\t\t\t\t    domEvtName = _key$split2[0],\n\t\t\t\t    domSelector = _key$split2[1];\n\n\t\t\t\t_this.eventListeners[key].forEach(function (schemaItem) {\n\t\t\t\t\tschemaItem.activateDomEventListener(el, domEvtName, domSelector);\n\t\t\t\t});\n\t\t\t};\n\n\t\t\tfor (var key in this.eventListeners) {\n\t\t\t\t_loop(key);\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * For given {@link module:ui/template~TemplateValueSchema} containing {@link module:ui/template~TemplateBinding} it activates the\n   * binding and sets its initial value.\n   *\n   * Note: {@link module:ui/template~TemplateValueSchema} can be for HTMLElement attributes or Text Node `textContent`.\n   *\n   * @protected\n   * @param {module:ui/template~TemplateValueSchema} valueSchema\n   * @param {Node} node DOM Node to be updated when {@link module:utils/observablemixin~ObservableMixin} changes.\n   * @param {Function} domUpdater A function which updates DOM (like attribute or text).\n   */\n\n\t}, {\n\t\tkey: '_bindToObservable',\n\t\tvalue: function _bindToObservable(valueSchema) {\n\t\t\tvar _arguments = arguments;\n\n\t\t\tvalueSchema\n\t\t\t// Filter \"falsy\" (false, undefined, null, '') value schema components out.\n\t\t\t.filter(function (item) {\n\t\t\t\treturn !isFalsy(item);\n\t\t\t})\n\t\t\t// Filter inactive bindings from schema, like static strings ('foo'), numbers (42), etc.\n\t\t\t.filter(function (item) {\n\t\t\t\treturn item.observable;\n\t\t\t})\n\t\t\t// Once only the actual binding are left, let the emitter listen to observable change:attribute event.\n\t\t\t// TODO: Reduce the number of listeners attached as many bindings may listen\n\t\t\t// to the same observable attribute.\n\t\t\t.forEach(function (templateBinding) {\n\t\t\t\treturn templateBinding.activateAttributeListener.apply(templateBinding, _arguments);\n\t\t\t});\n\n\t\t\t// Set initial values.\n\t\t\tsyncValueSchemaValue.apply(undefined, arguments);\n\t\t}\n\t}], [{\n\t\tkey: 'bind',\n\t\tvalue: function bind(observable, emitter) {\n\t\t\treturn {\n\t\t\t\tto: function to(eventNameOrFunctionOrAttribute, callback) {\n\t\t\t\t\treturn new TemplateToBinding({\n\t\t\t\t\t\teventNameOrFunction: eventNameOrFunctionOrAttribute,\n\t\t\t\t\t\tattribute: eventNameOrFunctionOrAttribute,\n\t\t\t\t\t\tobservable: observable, emitter: emitter, callback: callback\n\t\t\t\t\t});\n\t\t\t\t},\n\t\t\t\tif: function _if(attribute, valueIfTrue, callback) {\n\t\t\t\t\treturn new TemplateIfBinding({\n\t\t\t\t\t\tobservable: observable, emitter: emitter, attribute: attribute, valueIfTrue: valueIfTrue, callback: callback\n\t\t\t\t\t});\n\t\t\t\t}\n\t\t\t};\n\t\t}\n\n\t\t/**\n   * Extends {@link module:ui/template~Template} instance with additional content from {@link module:ui/template~TemplateDefinition}.\n   *\n   *\t\tconst bind = Template.bind( observable, emitterInstance );\n   *\t\tconst instance = new Template( {\n   *\t\t\ttag: 'p',\n   *\t\t\tattributes: {\n   *\t\t\t\tclass: 'a',\n   *\t\t\t\tdata-x: bind.to( 'foo' )\n   *\t\t\t},\n   *\t\t\tchildren: [\n   *\t\t\t\t{\n   *\t\t\t\t\ttag: 'span',\n   *\t\t\t\t\tattributes: {\n   *\t\t\t\t\t\tclass: 'b'\n   *\t\t\t\t\t},\n   *\t\t\t\t\tchildren: [\n   *\t\t\t\t\t\t'Span'\n   *\t\t\t\t\t]\n   *\t\t\t\t}\n   *\t\t\t]\n   *\t\t } );\n   *\n   *\t\t// Instance-level extension.\n   *\t\tTemplate.extend( instance, {\n   *\t\t\tattributes: {\n   *\t\t\t\tclass: 'b',\n   *\t\t\t\tdata-x: bind.to( 'bar' )\n   *\t\t\t},\n   *\t\t\tchildren: [\n   *\t\t\t\t{\n   *\t\t\t\t\tattributes: {\n   *\t\t\t\t\t\tclass: 'c'\n   *\t\t\t\t\t}\n   *\t\t\t\t}\n   *\t\t\t]\n   *\t\t} );\n   *\n   *\t\t// Child extension.\n   *\t\tTemplate.extend( instance.children.get( 0 ), {\n   *\t\t\tattributes: {\n   *\t\t\t\tclass: 'd'\n   *\t\t\t}\n   *\t\t} );\n   *\n   * the `instance.render().outerHTML` is\n   *\n   *\t\t<p class=\"a b\" data-x=\"{ observable.foo } { observable.bar }\">\n   *\t\t\t<span class=\"b c d\">Span</span>\n   *\t\t</p>\n   *\n   * @param {module:ui/template~Template} template Existing Template instance to be extended.\n   * @param {module:ui/template~TemplateDefinition} def An extension to existing an template instance.\n   */\n\n\t}, {\n\t\tkey: 'extend',\n\t\tvalue: function extend(template, def) {\n\t\t\tif (template._isRendered) {\n\t\t\t\t/**\n     * Extending a template after rendering may not work as expected. To make sure\n     * the {@link #extend extending} works for the rendered element, perform it\n     * before {@link #render} is called.\n     *\n     * @error template-extend-render\n     */\n\t\t\t\t_log2.default.warn('template-extend-render: Attempting to extend a template which has already been rendered.');\n\t\t\t}\n\n\t\t\textendTemplate(template, normalize(clone(def)));\n\t\t}\n\t}]);\n\n\treturn Template;\n}();\n\nexports.default = Template;\n\n\n(0, _mix2.default)(Template, _emittermixin2.default);\n\n/**\n * Describes a binding created by {@link module:ui/template~Template.bind} interface.\n *\n * @protected\n */\n\nvar TemplateBinding = exports.TemplateBinding = function () {\n\t/**\n  * Creates an instance of the {@link module:ui/template~TemplateBinding} class.\n  *\n  * @param {module:ui/template~TemplateDefinition} def The definition of the binding.\n  */\n\tfunction TemplateBinding(def) {\n\t\t_classCallCheck(this, TemplateBinding);\n\n\t\tObject.assign(this, def);\n\n\t\t/**\n   * An observable instance of the binding. It provides the attribute\n   * with the value or passes the event when a corresponding DOM event is fired.\n   *\n   * @member {module:utils/observablemixin~ObservableMixin} module:ui/template~TemplateBinding#observable\n   */\n\n\t\t/**\n   * An {@link module:utils/emittermixin~EmitterMixin} instance used by the binding\n   * to (either):\n   *\n   * * listen to the attribute change in the {@link module:ui/template~TemplateBinding#observable},\n   * * listen to the event in the DOM.\n   *\n   * @member {module:utils/emittermixin~EmitterMixin} module:ui/template~TemplateBinding#emitter\n   */\n\n\t\t/**\n   * The name of the attribute of {@link module:ui/template~TemplateBinding#observable} which is observed.\n   *\n   * @member {String} module:ui/template~TemplateBinding#attribute\n   */\n\n\t\t/**\n   * A custom function to process the value of {@link module:ui/template~TemplateBinding#attribute}.\n   *\n   * @member {Function} [module:ui/template~TemplateBinding#callback]\n   */\n\t}\n\n\t/**\n  * Returns the value of the binding, which is the value of {@link module:ui/template~TemplateBinding#attribute} in\n  * {@link module:ui/template~TemplateBinding#observable}.\n  *\n  * @param {Node} [node] A native DOM node, passed to the custom {@link module:ui/template~TemplateBinding#callback}.\n  * @returns {*} The value of {@link module:ui/template~TemplateBinding#attribute} in {@link module:ui/template~TemplateBinding#observable}.\n  */\n\n\n\t_createClass(TemplateBinding, [{\n\t\tkey: 'getValue',\n\t\tvalue: function getValue(domNode) {\n\t\t\tvar value = this.observable[this.attribute];\n\n\t\t\treturn this.callback ? this.callback(value, domNode) : value;\n\t\t}\n\n\t\t/**\n   * Activates the listener for the changes of {@link module:ui/template~TemplateBinding#attribute} in\n   * {@link module:ui/template~TemplateBinding#observable}, which then updates the DOM with the aggregated\n   * value of {@link module:ui/template~TemplateValueSchema}.\n   *\n   * For instance, the `class` attribute of the `Template` element can be be bound to\n   * the observable `foo` attribute in `ObservableMixin` instance.\n   *\n   * @param {module:ui/template~TemplateValueSchema} valueSchema A full schema to generate an attribute or text in DOM.\n   * @param {Node} node A native DOM node, which attribute or text is to be updated.\n   * @param {Function} updater A DOM updater function used to update native DOM attribute or text.\n   */\n\n\t}, {\n\t\tkey: 'activateAttributeListener',\n\t\tvalue: function activateAttributeListener(valueSchema, node, updater) {\n\t\t\tthis.emitter.listenTo(this.observable, 'change:' + this.attribute, function () {\n\t\t\t\tsyncValueSchemaValue(valueSchema, node, updater);\n\t\t\t});\n\t\t}\n\t}]);\n\n\treturn TemplateBinding;\n}();\n\n/**\n * Describes either:\n *\n * * a binding to {@link module:utils/observablemixin~ObservableMixin}\n * * or a native DOM event binding\n *\n * created by {@link module:ui/template~BindChain#to} method.\n *\n * @protected\n */\n\n\nvar TemplateToBinding = exports.TemplateToBinding = function (_TemplateBinding) {\n\t_inherits(TemplateToBinding, _TemplateBinding);\n\n\tfunction TemplateToBinding() {\n\t\t_classCallCheck(this, TemplateToBinding);\n\n\t\treturn _possibleConstructorReturn(this, (TemplateToBinding.__proto__ || Object.getPrototypeOf(TemplateToBinding)).apply(this, arguments));\n\t}\n\n\t_createClass(TemplateToBinding, [{\n\t\tkey: 'activateDomEventListener',\n\n\t\t/**\n   * Activates the listener for the native DOM event, which when fired, is propagated by\n   * the {@link module:ui/template~TemplateBinding#emitter}.\n   *\n   * @param {HTMLElement} element An element on which listening to the native DOM event.\n   * @param {String} domEvtName A name of the native DOM event.\n   * @param {String} [domSelector] A selector in DOM to filter delegated events.\n   */\n\t\tvalue: function activateDomEventListener(el, domEvtName, domSelector) {\n\t\t\tvar _this3 = this;\n\n\t\t\tthis.emitter.listenTo(el, domEvtName, function (evt, domEvt) {\n\t\t\t\tif (!domSelector || domEvt.target.matches(domSelector)) {\n\t\t\t\t\tif (typeof _this3.eventNameOrFunction == 'function') {\n\t\t\t\t\t\t_this3.eventNameOrFunction(domEvt);\n\t\t\t\t\t} else {\n\t\t\t\t\t\t_this3.observable.fire(_this3.eventNameOrFunction, domEvt);\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t});\n\t\t}\n\t}]);\n\n\treturn TemplateToBinding;\n}(TemplateBinding);\n\n/**\n * Describes a binding to {@link module:utils/observablemixin~ObservableMixin} created by {@link module:ui/template~BindChain#if}\n * method.\n *\n * @protected\n */\n\n\nvar TemplateIfBinding = exports.TemplateIfBinding = function (_TemplateBinding2) {\n\t_inherits(TemplateIfBinding, _TemplateBinding2);\n\n\tfunction TemplateIfBinding() {\n\t\t_classCallCheck(this, TemplateIfBinding);\n\n\t\treturn _possibleConstructorReturn(this, (TemplateIfBinding.__proto__ || Object.getPrototypeOf(TemplateIfBinding)).apply(this, arguments));\n\t}\n\n\t_createClass(TemplateIfBinding, [{\n\t\tkey: 'getValue',\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tvalue: function getValue(domNode) {\n\t\t\tvar value = _get(TemplateIfBinding.prototype.__proto__ || Object.getPrototypeOf(TemplateIfBinding.prototype), 'getValue', this).call(this, domNode);\n\n\t\t\treturn isFalsy(value) ? false : this.valueIfTrue || true;\n\t\t}\n\n\t\t/**\n   * The value of the DOM attribute/text to be set if the {@link module:ui/template~TemplateBinding#attribute} in\n   * {@link module:ui/template~TemplateBinding#observable} is `true`.\n   *\n   * @member {String} [module:ui/template~TemplateIfBinding#valueIfTrue]\n   */\n\n\t}]);\n\n\treturn TemplateIfBinding;\n}(TemplateBinding);\n\n// Checks whether given {@link module:ui/template~TemplateValueSchema} contains a\n// {@link module:ui/template~TemplateBinding}.\n//\n// @param {module:ui/template~TemplateValueSchema} valueSchema\n// @returns {Boolean}\n\n\nfunction hasTemplateBinding(valueSchema) {\n\tif (!valueSchema) {\n\t\treturn false;\n\t}\n\n\t// Normalize attributes with additional data like namespace:\n\t// \t\tclass: { ns: 'abc', value: [ ... ] }\n\tif (valueSchema.value) {\n\t\tvalueSchema = valueSchema.value;\n\t}\n\n\tif (Array.isArray(valueSchema)) {\n\t\treturn valueSchema.some(hasTemplateBinding);\n\t} else if (valueSchema instanceof TemplateBinding) {\n\t\treturn true;\n\t}\n\n\treturn false;\n}\n\n// Assembles the value using {@link module:ui/template~TemplateValueSchema} and stores it in a form of\n// an Array. Each entry of an Array corresponds to one of {@link module:ui/template~TemplateValueSchema}\n// items.\n//\n// @param {module:ui/template~TemplateValueSchema} valueSchema\n// @param {Node} node DOM Node updated when {@link module:utils/observablemixin~ObservableMixin} changes.\n// @return {Array}\nfunction getValueSchemaValue(valueSchema, domNode) {\n\treturn valueSchema.map(function (schemaItem) {\n\t\t// Process {@link module:ui/template~TemplateBinding} bindings.\n\t\tif (schemaItem instanceof TemplateBinding) {\n\t\t\treturn schemaItem.getValue(domNode);\n\t\t}\n\n\t\t// All static values like strings, numbers, and \"falsy\" values (false, null, undefined, '', etc.) just pass.\n\t\treturn schemaItem;\n\t});\n}\n\n// A function executed each time bound Observable attribute changes, which updates DOM with a value\n// constructed from {@link module:ui/template~TemplateValueSchema}.\n//\n// @param {module:ui/template~TemplateValueSchema} valueSchema\n// @param {Node} node DOM Node updated when {@link module:utils/observablemixin~ObservableMixin} changes.\n// @param {Function} domUpdater A function which updates DOM (like attribute or text).\nfunction syncValueSchemaValue(valueSchema, domNode, domUpdater) {\n\tvar value = getValueSchemaValue(valueSchema, domNode);\n\n\t// Check if valueSchema is a single Template.bind.if, like:\n\t//\t\t{ class: Template.bind.if( 'foo' ) }\n\tif (valueSchema.length == 1 && valueSchema[0] instanceof TemplateIfBinding) {\n\t\tvalue = value[0];\n\t} else {\n\t\tvalue = value.reduce(arrayValueReducer, '');\n\t}\n\n\tif (isFalsy(value)) {\n\t\tdomUpdater.remove();\n\t} else {\n\t\tdomUpdater.set(value);\n\t}\n}\n\n// Returns an object consisting of `set` and `remove` functions, which\n// can be used in the context of DOM Node to set or reset `textContent`.\n// @see module:ui/view~View#_bindToObservable\n//\n// @param {Node} node DOM Node to be modified.\n// @returns {Object}\nfunction getTextUpdater(node) {\n\treturn {\n\t\tset: function set(value) {\n\t\t\tnode.textContent = value;\n\t\t},\n\t\tremove: function remove() {\n\t\t\tnode.textContent = '';\n\t\t}\n\t};\n}\n\n// Returns an object consisting of `set` and `remove` functions, which\n// can be used in the context of DOM Node to set or reset an attribute.\n// @see module:ui/view~View#_bindToObservable\n//\n// @param {Node} node DOM Node to be modified.\n// @param {String} attrName Name of the attribute to be modified.\n// @param {String} [ns=null] Namespace to use.\n// @returns {Object}\nfunction getAttributeUpdater(el, attrName, ns) {\n\treturn {\n\t\tset: function set(value) {\n\t\t\tel.setAttributeNS(ns, attrName, value);\n\t\t},\n\t\tremove: function remove() {\n\t\t\tel.removeAttributeNS(ns, attrName);\n\t\t}\n\t};\n}\n\n// Returns an object consisting of `set` and `remove` functions, which\n// can be used in the context of CSSStyleDeclaration to set or remove a style.\n// @see module:ui/view~View#_bindToObservable\n//\n// @param {Node} node DOM Node to be modified.\n// @param {String} styleName Name of the style to be modified.\n// @returns {Object}\nfunction getStyleUpdater(el, styleName) {\n\treturn {\n\t\tset: function set(value) {\n\t\t\tel.style[styleName] = value;\n\t\t},\n\t\tremove: function remove() {\n\t\t\tel.style[styleName] = null;\n\t\t}\n\t};\n}\n\n// Clones definition of the template.\n//\n// @param {module:ui/template~TemplateDefinition} def\n// @returns {module:ui/template~TemplateDefinition}\nfunction clone(def) {\n\tvar clone = (0, _cloneDeepWith2.default)(def, function (value) {\n\t\t// Don't clone the `Template.bind`* bindings because of the references to Observable\n\t\t// and DomEmitterMixin instances inside, which would also be traversed and cloned by greedy\n\t\t// cloneDeepWith algorithm. There's no point in cloning Observable/DomEmitterMixins\n\t\t// along with the definition.\n\t\t//\n\t\t// Don't clone Template instances if provided as a child. They're simply #render()ed\n\t\t// and nothing should interfere.\n\t\t//\n\t\t// Also don't clone View instances if provided as a child of the Template. The template\n\t\t// instance will be extracted from the View during the normalization and there's no need\n\t\t// to clone it.\n\t\tif (value && (value instanceof TemplateBinding || isTemplate(value) || isView(value) || isViewCollection(value))) {\n\t\t\treturn value;\n\t\t}\n\t});\n\n\treturn clone;\n}\n\n// Normalizes given {@link module:ui/template~TemplateDefinition}.\n//\n// See:\n//  * {@link normalizeAttributes}\n//  * {@link normalizeListeners}\n//  * {@link normalizePlainTextDefinition}\n//  * {@link normalizeTextDefinition}\n//\n// @param {module:ui/template~TemplateDefinition} def\n// @returns {module:ui/template~TemplateDefinition} Normalized definition.\nfunction normalize(def) {\n\tif (typeof def == 'string') {\n\t\tdef = normalizePlainTextDefinition(def);\n\t} else if (def.text) {\n\t\tnormalizeTextDefinition(def);\n\t}\n\n\tif (def.on) {\n\t\tdef.eventListeners = normalizeListeners(def.on);\n\n\t\t// Template mixes EmitterMixin, so delete #on to avoid collision.\n\t\tdelete def.on;\n\t}\n\n\tif (!def.text) {\n\t\tif (def.attributes) {\n\t\t\tnormalizeAttributes(def.attributes);\n\t\t}\n\n\t\tvar children = new _collection2.default();\n\n\t\tif (def.children) {\n\t\t\tif (isViewCollection(def.children)) {\n\t\t\t\tchildren.add(def.children);\n\t\t\t} else {\n\t\t\t\tvar _iteratorNormalCompletion3 = true;\n\t\t\t\tvar _didIteratorError3 = false;\n\t\t\t\tvar _iteratorError3 = undefined;\n\n\t\t\t\ttry {\n\t\t\t\t\tfor (var _iterator3 = def.children[Symbol.iterator](), _step3; !(_iteratorNormalCompletion3 = (_step3 = _iterator3.next()).done); _iteratorNormalCompletion3 = true) {\n\t\t\t\t\t\tvar child = _step3.value;\n\n\t\t\t\t\t\tif (isTemplate(child) || isView(child)) {\n\t\t\t\t\t\t\tchildren.add(child);\n\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\tchildren.add(new Template(child));\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t} catch (err) {\n\t\t\t\t\t_didIteratorError3 = true;\n\t\t\t\t\t_iteratorError3 = err;\n\t\t\t\t} finally {\n\t\t\t\t\ttry {\n\t\t\t\t\t\tif (!_iteratorNormalCompletion3 && _iterator3.return) {\n\t\t\t\t\t\t\t_iterator3.return();\n\t\t\t\t\t\t}\n\t\t\t\t\t} finally {\n\t\t\t\t\t\tif (_didIteratorError3) {\n\t\t\t\t\t\t\tthrow _iteratorError3;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\tdef.children = children;\n\t}\n\n\treturn def;\n}\n\n// Normalizes \"attributes\" section of {@link module:ui/template~TemplateDefinition}.\n//\n//\t\tattributes: {\n//\t\t\ta: 'bar',\n//\t\t\tb: {@link module:ui/template~TemplateBinding},\n//\t\t\tc: {\n//\t\t\t\tvalue: 'bar'\n//\t\t\t}\n//\t\t}\n//\n// becomes\n//\n//\t\tattributes: {\n//\t\t\ta: [ 'bar' ],\n//\t\t\tb: [ {@link module:ui/template~TemplateBinding} ],\n//\t\t\tc: {\n//\t\t\t\tvalue: [ 'bar' ]\n//\t\t\t}\n//\t\t}\n//\n// @param {Object} attrs\nfunction normalizeAttributes(attrs) {\n\tfor (var a in attrs) {\n\t\tif (attrs[a].value) {\n\t\t\tattrs[a].value = [].concat(attrs[a].value);\n\t\t}\n\n\t\tarrayify(attrs, a);\n\t}\n}\n\n// Normalizes \"on\" section of {@link module:ui/template~TemplateDefinition}.\n//\n//\t\ton: {\n//\t\t\ta: 'bar',\n//\t\t\tb: {@link module:ui/template~TemplateBinding},\n//\t\t\tc: [ {@link module:ui/template~TemplateBinding}, () => { ... } ]\n//\t\t}\n//\n// becomes\n//\n//\t\ton: {\n//\t\t\ta: [ 'bar' ],\n//\t\t\tb: [ {@link module:ui/template~TemplateBinding} ],\n//\t\t\tc: [ {@link module:ui/template~TemplateBinding}, () => { ... } ]\n//\t\t}\n//\n// @param {Object} listeners\n// @returns {Object} Object containing normalized listeners.\nfunction normalizeListeners(listeners) {\n\tfor (var l in listeners) {\n\t\tarrayify(listeners, l);\n\t}\n\n\treturn listeners;\n}\n\n// Normalizes \"string\" {@link module:ui/template~TemplateDefinition}.\n//\n//\t\t\"foo\"\n//\n// becomes\n//\n//\t\t{ text: [ 'foo' ] },\n//\n// @param {String} def\n// @returns {module:ui/template~TemplateDefinition} Normalized template definition.\nfunction normalizePlainTextDefinition(def) {\n\treturn {\n\t\ttext: [def]\n\t};\n}\n\n// Normalizes text {@link module:ui/template~TemplateDefinition}.\n//\n//\t\tchildren: [\n//\t\t\t{ text: 'def' },\n//\t\t\t{ text: {@link module:ui/template~TemplateBinding} }\n//\t\t]\n//\n// becomes\n//\n//\t\tchildren: [\n//\t\t\t{ text: [ 'def' ] },\n//\t\t\t{ text: [ {@link module:ui/template~TemplateBinding} ] }\n//\t\t]\n//\n// @param {module:ui/template~TemplateDefinition} def\nfunction normalizeTextDefinition(def) {\n\tif (!Array.isArray(def.text)) {\n\t\tdef.text = [def.text];\n\t}\n}\n\n// Wraps an entry in Object in an Array, if not already one.\n//\n//\t\t{\n//\t\t\tx: 'y',\n//\t\t\ta: [ 'b' ]\n//\t\t}\n//\n// becomes\n//\n//\t\t{\n//\t\t\tx: [ 'y' ],\n//\t\t\ta: [ 'b' ]\n//\t\t}\n//\n// @param {Object} obj\n// @param {String} key\nfunction arrayify(obj, key) {\n\tif (!Array.isArray(obj[key])) {\n\t\tobj[key] = [obj[key]];\n\t}\n}\n\n// A helper which concatenates the value avoiding unwanted\n// leading white spaces.\n//\n// @param {String} prev\n// @param {String} cur\n// @returns {String}\nfunction arrayValueReducer(prev, cur) {\n\tif (isFalsy(cur)) {\n\t\treturn prev;\n\t} else if (isFalsy(prev)) {\n\t\treturn cur;\n\t} else {\n\t\treturn prev + ' ' + cur;\n\t}\n}\n\n// Extends one object defined in the following format:\n//\n//\t\t{\n//\t\t\tkey1: [Array1],\n//\t\t\tkey2: [Array2],\n//\t\t\t...\n//\t\t\tkeyN: [ArrayN]\n//\t\t}\n//\n// with another object of the same data format.\n//\n// @param {Object} obj Base object.\n// @param {Object} ext Object extending base.\n// @returns {String}\nfunction extendObjectValueArray(obj, ext) {\n\tfor (var a in ext) {\n\t\tif (obj[a]) {\n\t\t\tvar _obj$a;\n\n\t\t\t(_obj$a = obj[a]).push.apply(_obj$a, _toConsumableArray(ext[a]));\n\t\t} else {\n\t\t\tobj[a] = ext[a];\n\t\t}\n\t}\n}\n\n// A helper for {@link module:ui/template~Template#extend}. Recursively extends {@link module:ui/template~Template} instance\n// with content from {module:ui/template~TemplateDefinition}. See {@link module:ui/template~Template#extend} to learn more.\n//\n// @param {module:ui/template~Template} def A template instance to be extended.\n// @param {module:ui/template~TemplateDefinition} def A definition which is to extend the template instance.\nfunction extendTemplate(template, def) {\n\tif (def.attributes) {\n\t\tif (!template.attributes) {\n\t\t\ttemplate.attributes = {};\n\t\t}\n\n\t\textendObjectValueArray(template.attributes, def.attributes);\n\t}\n\n\tif (def.eventListeners) {\n\t\tif (!template.eventListeners) {\n\t\t\ttemplate.eventListeners = {};\n\t\t}\n\n\t\textendObjectValueArray(template.eventListeners, def.eventListeners);\n\t}\n\n\tif (def.text) {\n\t\tvar _template$text;\n\n\t\t(_template$text = template.text).push.apply(_template$text, _toConsumableArray(def.text));\n\t}\n\n\tif (def.children && def.children.length) {\n\t\tif (template.children.length != def.children.length) {\n\t\t\t/**\n    * The number of children in extended definition does not match.\n    *\n    * @error ui-template-extend-children-mismatch\n    */\n\t\t\tthrow new _ckeditorerror2.default('ui-template-extend-children-mismatch: The number of children in extended definition does not match.');\n\t\t}\n\n\t\tvar childIndex = 0;\n\n\t\tvar _iteratorNormalCompletion4 = true;\n\t\tvar _didIteratorError4 = false;\n\t\tvar _iteratorError4 = undefined;\n\n\t\ttry {\n\t\t\tfor (var _iterator4 = def.children[Symbol.iterator](), _step4; !(_iteratorNormalCompletion4 = (_step4 = _iterator4.next()).done); _iteratorNormalCompletion4 = true) {\n\t\t\t\tvar childDef = _step4.value;\n\n\t\t\t\textendTemplate(template.children.get(childIndex++), childDef);\n\t\t\t}\n\t\t} catch (err) {\n\t\t\t_didIteratorError4 = true;\n\t\t\t_iteratorError4 = err;\n\t\t} finally {\n\t\t\ttry {\n\t\t\t\tif (!_iteratorNormalCompletion4 && _iterator4.return) {\n\t\t\t\t\t_iterator4.return();\n\t\t\t\t}\n\t\t\t} finally {\n\t\t\t\tif (_didIteratorError4) {\n\t\t\t\t\tthrow _iteratorError4;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n}\n\n// Checks if value is \"falsy\".\n// Note: 0 (Number) is not \"falsy\" in this context.\n//\n// @private\n// @param {*} value Value to be checked.\nfunction isFalsy(value) {\n\treturn !value && value !== 0;\n}\n\n// Checks if the item is an instance of {@link module:ui/view~View}\n//\n// @private\n// @param {*} value Value to be checked.\nfunction isView(item) {\n\treturn item instanceof _view2.default;\n}\n\n// Checks if the item is an instance of {@link module:ui/template~Template}\n//\n// @private\n// @param {*} value Value to be checked.\nfunction isTemplate(item) {\n\treturn item instanceof Template;\n}\n\n// Checks if the item is an instance of {@link module:ui/viewcollection~ViewCollection}\n//\n// @private\n// @param {*} value Value to be checked.\nfunction isViewCollection(item) {\n\treturn item instanceof _viewcollection2.default;\n}\n\n/**\n * A definition of {@link module:ui/template~Template}.\n * See: {@link module:ui/template~TemplateValueSchema}.\n *\n *\t\tnew Template( {\n *\t\t\ttag: 'p',\n *\t\t\tchildren: [\n *\t\t\t\t{\n *\t\t\t\t\ttag: 'span',\n *\t\t\t\t\tattributes: { ... },\n *\t\t\t\t\tchildren: [ ... ],\n *\t\t\t\t\t...\n *\t\t\t\t},\n *\t\t\t\t{\n *\t\t\t\t\ttext: 'static–text'\n *\t\t\t\t},\n *\t\t\t\t'also-static–text',\n *\t\t\t\t<{@link module:ui/view~View} instance>\n *\t\t\t\t<{@link module:ui/template~Template} instance>\n *\t\t\t\t...\n *\t\t\t],\n *\t\t\tattributes: {\n *\t\t\t\tclass: {@link module:ui/template~TemplateValueSchema},\n *\t\t\t\tid: {@link module:ui/template~TemplateValueSchema},\n *\t\t\t\tstyle: {@link module:ui/template~TemplateValueSchema}\n *\t\t\t\t...\n *\t\t\t},\n *\t\t\ton: {\n *\t\t\t\t'click': {@link module:ui/template~TemplateListenerSchema}\n *\t\t\t\t'keyup@.some-class': {@link module:ui/template~TemplateListenerSchema},\n *\t\t\t\t...\n *\t\t\t}\n *\t\t} );\n *\n *\t\t// An entire view collection can be used as a child in the definition.\n *\t\tnew Template( {\n *\t\t\ttag: 'p',\n *\t\t\tchildren: <{@link module:ui/viewcollection~ViewCollection} instance>\n *\t\t} );\n *\n * @typedef module:ui/template~TemplateDefinition\n * @type Object\n * @property {String} tag\n * @property {Array.<module:ui/template~TemplateDefinition>} [children]\n * @property {Object.<String,module:ui/template~TemplateValueSchema>} [attributes]\n * @property {String|module:ui/template~TemplateValueSchema|Array.<String|module:ui/template~TemplateValueSchema>} [text]\n * @property {Object.<String,module:ui/template~TemplateListenerSchema>} [on]\n */\n\n/**\n * Describes a value of HTMLElement attribute or `textContent`. See:\n *  * {@link module:ui/template~TemplateDefinition},\n *  * {@link module:ui/template~Template.bind},\n *\n *\t\tconst bind = Template.bind( observableInstance, emitterInstance );\n *\n *\t\tnew Template( {\n *\t\t\ttag: 'p',\n *\t\t\tattributes: {\n *\t\t\t\t// Plain String schema.\n *\t\t\t\tclass: 'static-text'\n *\n *\t\t\t\t// Object schema, an `ObservableMixin` binding.\n *\t\t\t\tclass: bind.to( 'foo' )\n *\n *\t\t\t\t// Array schema, combines the above.\n *\t\t\t\tclass: [\n *\t\t\t\t\t'static-text',\n *\t\t\t\t\tbind.to( 'bar', () => { ... } )\n *\t\t\t\t],\n *\n *\t\t\t\t// Array schema, with custom namespace.\n *\t\t\t\tclass: {\n *\t\t\t\t\tns: 'http://ns.url',\n *\t\t\t\t\tvalue: [\n *\t\t\t\t\t\tbind.if( 'baz', 'value-when-true' )\n *\t\t\t\t\t\t'static-text'\n *\t\t\t\t\t]\n *\t\t\t\t},\n *\n *\t\t\t\t// Object literal schema, specific for styles.\n *\t\t\t\tstyle: {\n *\t\t\t\t\tcolor: 'red',\n *\t\t\t\t\tbackgroundColor: bind.to( 'qux', () => { ... } )\n *\t\t\t\t}\n *\t\t\t}\n *\t\t} );\n *\n * @typedef module:ui/template~TemplateValueSchema\n * @type {Object|String|Array}\n */\n\n/**\n * Describes a listener attached to HTMLElement. See: {@link module:ui/template~TemplateDefinition}.\n *\n *\t\tnew Template( {\n *\t\t\ttag: 'p',\n *\t\t\ton: {\n *\t\t\t\t// Plain String schema.\n *\t\t\t\tclick: 'clicked'\n *\n *\t\t\t\t// Object schema, an `ObservableMixin` binding.\n *\t\t\t\tclick: {@link module:ui/template~TemplateBinding}\n *\n *\t\t\t\t// Array schema, combines the above.\n *\t\t\t\tclick: [\n *\t\t\t\t\t'clicked',\n *\t\t\t\t\t{@link module:ui/template~TemplateBinding}\n *\t\t\t\t],\n *\n *\t\t\t\t// Array schema, with custom callback.\n *\t\t\t\t// Note: It will work for \"click\" event on class=\".foo\" children only.\n *\t\t\t\t'click@.foo': {\n *\t\t\t\t\t'clicked',\n *\t\t\t\t\t{@link module:ui/template~TemplateBinding},\n *\t\t\t\t\t() => { ... }\n *\t\t\t\t}\n *\t\t\t}\n *\t\t} );\n *\n * @typedef module:ui/template~TemplateListenerSchema\n * @type {Object|String|Array}\n */\n\n/**\n * The type of {@link ~Template.bind}'s return value.\n *\n * @interface module:ui/template~BindChain\n */\n\n/**\n * Binds {@link module:utils/observablemixin~ObservableMixin} instance to:\n *\n * * HTMLElement attribute or Text Node `textContent` so remains in sync with the Observable when it changes:\n * * HTMLElement DOM event, so the DOM events are propagated through Observable.\n *\n *\t\tconst bind = Template.bind( observableInstance, emitterInstance );\n *\n *\t\tnew Template( {\n *\t\t\ttag: 'p',\n *\t\t\tattributes: {\n *\t\t\t\t// class=\"...\" attribute gets bound to `observableInstance#a`\n *\t\t\t\t'class': bind.to( 'a' )\n *\t\t\t},\n *\t\t\tchildren: [\n *\t\t\t\t// <p>...</p> gets bound to `observableInstance#b`; always `toUpperCase()`.\n *\t\t\t\t{ text: bind.to( 'b', ( value, node ) => value.toUpperCase() ) }\n *\t\t\t],\n *\t\t\ton: {\n *\t\t\t\tclick: [\n *\t\t\t\t\t// \"clicked\" event will be fired on `observableInstance` when \"click\" fires in DOM.\n *\t\t\t\t\tbind.to( 'clicked' ),\n *\n *\t\t\t\t\t// A custom callback function will be executed when \"click\" fires in DOM.\n *\t\t\t\t\tbind.to( () => {\n *\t\t\t\t\t\t...\n *\t\t\t\t\t} )\n *\t\t\t\t]\n *\t\t\t}\n *\t\t} ).render();\n *\n *\t\tconst bind = Template.bind( observableInstance, emitterInstance );\n *\n *\t\tnew Template( {\n *\t\t\ttag: 'p',\n *\t\t} ).render();\n *\n * @method #to\n * @param {String|Function} eventNameOrFunctionOrAttribute An attribute name of\n * {@link module:utils/observablemixin~ObservableMixin} or a DOM event name or an event callback.\n * @param {Function} [callback] Allows processing of the value. Accepts `Node` and `value` as arguments.\n * @return {module:ui/template~TemplateBinding}\n */\n\n/**\n * Binds {@link module:utils/observablemixin~ObservableMixin} to HTMLElement attribute or Text Node `textContent`\n * so remains in sync with the Model when it changes. Unlike {@link module:ui/template~BindChain#to},\n * it controls the presence of the attribute/`textContent` depending on the \"falseness\" of\n * {@link module:utils/observablemixin~ObservableMixin} attribute.\n *\n *\t\tconst bind = Template.bind( observableInstance, emitterInstance );\n *\n *\t\tnew Template( {\n *\t\t\ttag: 'input',\n *\t\t\tattributes: {\n *\t\t\t\t// <input checked> when `observableInstance#a` is not undefined/null/false/''\n *\t\t\t\t// <input> when `observableInstance#a` is undefined/null/false\n *\t\t\t\tchecked: bind.if( 'a' )\n *\t\t\t},\n *\t\t\tchildren: [\n *\t\t\t\t{\n *\t\t\t\t\t// <input>\"b-is-not-set\"</input> when `observableInstance#b` is undefined/null/false/''\n *\t\t\t\t\t// <input></input> when `observableInstance#b` is not \"falsy\"\n *\t\t\t\t\ttext: bind.if( 'b', 'b-is-not-set', ( value, node ) => !value )\n *\t\t\t\t}\n *\t\t\t]\n *\t\t} ).render();\n *\n * @method #if\n * @param {String} attribute An attribute name of {@link module:utils/observablemixin~ObservableMixin} used in the binding.\n * @param {String} [valueIfTrue] Value set when {@link module:utils/observablemixin~ObservableMixin} attribute is not\n * undefined/null/false/''.\n * @param {Function} [callback] Allows processing of the value. Accepts `Node` and `value` as arguments.\n * @return {module:ui/template~TemplateBinding}\n */\n\n/***/ }),\n/* 7 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module ui/view\n */\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nvar _viewcollection = __webpack_require__(121);\n\nvar _viewcollection2 = _interopRequireDefault(_viewcollection);\n\nvar _template = __webpack_require__(6);\n\nvar _template2 = _interopRequireDefault(_template);\n\nvar _emittermixin = __webpack_require__(79);\n\nvar _emittermixin2 = _interopRequireDefault(_emittermixin);\n\nvar _observablemixin = __webpack_require__(31);\n\nvar _observablemixin2 = _interopRequireDefault(_observablemixin);\n\nvar _collection = __webpack_require__(78);\n\nvar _collection2 = _interopRequireDefault(_collection);\n\nvar _mix = __webpack_require__(4);\n\nvar _mix2 = _interopRequireDefault(_mix);\n\nvar _isiterable = __webpack_require__(41);\n\nvar _isiterable2 = _interopRequireDefault(_isiterable);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * Basic View class.\n *\n *\t\tclass SampleView extends View {\n *\t\t\tconstructor( locale ) {\n *\t\t\t\tsuper( locale );\n *\n *\t\t\t\tthis.template = new Template( {\n *\t\t\t\t\ttag: 'p',\n *\t\t\t\t\tchildren: [\n *\t\t\t\t\t\t'Hello',\n *\t\t\t\t\t\t{\n *\t\t\t\t\t\t\ttag: 'b',\n *\t\t\t\t\t\t\tchildren: [\n *\t\t\t\t\t\t\t\t'world!'\n *\t\t\t\t\t\t\t]\n *\t\t\t\t\t\t}\n *\t\t\t\t\t],\n *\t\t\t\t\tattributes: {\n *\t\t\t\t\t\tclass: 'foo'\n *\t\t\t\t\t}\n *\t\t\t\t} );\n *\t\t\t}\n *\t\t}\n *\n *\t\tconst view = new SampleView( locale );\n *\n *\t\tview.init().then( () => {\n *\t\t\t// Will append <p class=\"foo\">Hello<b>world</b></p>\n *\t\t\tdocument.body.appendChild( view.element );\n *\t\t} );\n *\n * @mixes module:utils/dom/emittermixin~EmmiterMixin\n * @mixes module:utils/observablemixin~ObservableMixin\n */\nvar View = function () {\n\t/**\n  * Creates an instance of the {@link module:ui/view~View} class.\n  *\n  * @param {module:utils/locale~Locale} [locale] The {@link module:core/editor/editor~Editor editor's locale} instance.\n  */\n\tfunction View(locale) {\n\t\t_classCallCheck(this, View);\n\n\t\t/**\n   * A set of tools to localize the user interface. See {@link module:core/editor/editor~Editor}.\n   *\n   * @readonly\n   * @member {module:utils/locale~Locale}\n   */\n\t\tthis.locale = locale;\n\n\t\t/**\n   * Shorthand for {@link module:utils/locale~Locale#t}.\n   *\n   * Note: If locale instance hasn't been passed to the view this method may not be available.\n   *\n   * @see module:utils/locale~Locale#t\n   * @method\n   */\n\t\tthis.t = locale && locale.t;\n\n\t\t/**\n   * Set `true` after {@link #init}, which can be asynchronous.\n   *\n   * @readonly\n   * @observable\n   * @member {Boolean} #ready\n   */\n\t\tthis.set('ready', false);\n\n\t\t/**\n   * Collections registered with {@link #createCollection}.\n   *\n   * @protected\n   * @member {Set.<module:ui/viewcollection~ViewCollection>}\n   */\n\t\tthis._viewCollections = new _collection2.default();\n\n\t\t/**\n   * A collection of view instances, which have been added directly\n   * into the {@link module:ui/template~Template#children}.\n   *\n   * @protected\n   * @member {module:ui/viewcollection~ViewCollection}\n   */\n\t\tthis._unboundChildren = this.createCollection();\n\n\t\t// Pass parent locale to its children.\n\t\tthis._viewCollections.on('add', function (evt, collection) {\n\t\t\tcollection.locale = locale;\n\t\t});\n\n\t\t/**\n   * Template of this view.\n   *\n   * @member {module:ui/template~Template} #template\n   */\n\n\t\t/**\n   * Element of this view.\n   *\n   * @private\n   * @member {HTMLElement} #_element\n   */\n\n\t\t/**\n   * Cached {@link module:ui/template~Template} binder object specific for this instance.\n   * See {@link #bindTemplate}.\n   *\n   * @private\n   * @member {Object} #_bindTemplate\n   */\n\t}\n\n\t/**\n  * Element of this view. The element is rendered on first reference\n  * using {@link #template} definition.\n  *\n  * @type {HTMLElement}\n  */\n\n\n\t_createClass(View, [{\n\t\tkey: 'createCollection',\n\n\n\t\t/**\n   * Creates a new collection of views, which can be used in this view instance,\n   * e.g. as a member of {@link module:ui/template~TemplateDefinition TemplateDefinition} children.\n   *\n   *\t\tclass SampleView extends View {\n   *\t\t\tconstructor( locale ) {\n   *\t\t\t\tsuper( locale );\n   *\n   *\t\t\t\tthis.items = this.createCollection();\n  \t *\n   *\t\t\t\tthis.template = new Template( {\n   *\t\t\t\t\ttag: 'p',\n   *\n   *\t\t\t\t\t// `items` collection will render here.\n   *\t\t\t\t\tchildren: this.items\n   *\t\t\t\t} );\n   *\t\t\t}\n   *\t\t}\n   *\n   *\t\tconst view = new SampleView( locale );\n   *\t\tconst anotherView = new AnotherSampleView( locale );\n   *\n   *\t\tview.init().then( () => {\n   *\t\t\t// Will append <p></p>\n   *\t\t\tdocument.body.appendChild( view.element );\n   *\n   *\t\t\t// `anotherView` becomes a child of the view, which is reflected in DOM\n   *\t\t\t// <p><anotherView#element></p>\n   *\t\t\tview.items.add( anotherView );\n   *\t\t} );\n   *\n   * @returns {module:ui/viewcollection~ViewCollection} A new collection of view instances.\n   */\n\t\tvalue: function createCollection() {\n\t\t\tvar collection = new _viewcollection2.default();\n\n\t\t\tthis._viewCollections.add(collection);\n\n\t\t\treturn collection;\n\t\t}\n\n\t\t/**\n   * Registers a new child view under this view instance. Once registered, a child\n   * view is managed by its parent, including initialization ({@link #init})\n   * and destruction ({@link #destroy}).\n   *\n   *\t\tclass SampleView extends View {\n   *\t\t\tconstructor( locale ) {\n   *\t\t\t\tsuper( locale );\n   *\n   *\t\t\t\tthis.childA = new SomeChildView( locale );\n   *\t\t\t\tthis.childB = new SomeChildView( locale );\n   *\n   *\t\t\t\tthis.template = new Template( { tag: 'p' } );\n   *\n   *\t\t\t\t// Register children.\n   *\t\t\t\tthis.addChildren( [ this.childA, this.childB ] );\n   *\t\t\t}\n   *\n   *\t\t\tinit() {\n   *\t\t\t\tthis.element.appendChild( this.childA.element );\n   *\t\t\t\tthis.element.appendChild( this.childB.element );\n   *\n   *\t\t\t\treturn super.init();\n   *\t\t\t}\n   *\t\t}\n   *\n   *\t\tconst view = new SampleView( locale );\n   *\n   *\t\tview.init().then( () => {\n   *\t\t\t// Will append <p><childA#element><b></b><childB#element></p>\n   *\t\t\tdocument.body.appendChild( view.element );\n   *\t\t} );\n   *\n   * **Note**: There's no need to add child views if they're used in the\n   * {@link #template} explicitly:\n   *\n   *\t\tclass SampleView extends View {\n   *\t\t\tconstructor( locale ) {\n   *\t\t\t\tsuper( locale );\n   *\n   *\t\t\t\tthis.childA = new SomeChildView( locale );\n   *\t\t\t\tthis.childB = new SomeChildView( locale );\n   *\n   *\t\t\t\tthis.template = new Template( {\n   *\t\t\t\t\ttag: 'p',\n   *\n  \t *\t\t\t\t\t// These children will be added automatically. There's no\n  \t *\t\t\t\t\t// need to call {@link #addChildren} for any of them.\n   *\t\t\t\t\tchildren: [ this.childA, this.childB ]\n   *\t\t\t\t} );\n   *\t\t\t}\n   *\n   *\t\t\t...\n   *\t\t}\n   *\n   * @param {module:ui/view~View|Iterable.<module:ui/view~View>} children Children views to be registered.\n   */\n\n\t}, {\n\t\tkey: 'addChildren',\n\t\tvalue: function addChildren(children) {\n\t\t\tif (!(0, _isiterable2.default)(children)) {\n\t\t\t\tchildren = [children];\n\t\t\t}\n\n\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\tvar _didIteratorError = false;\n\t\t\tvar _iteratorError = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator = children[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\tvar child = _step.value;\n\n\t\t\t\t\tthis._unboundChildren.add(child);\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError = true;\n\t\t\t\t_iteratorError = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Initializes the view and child views located in {@link #_viewCollections}.\n   *\n   * @returns {Promise} A Promise resolved when the initialization process is finished.\n   */\n\n\t}, {\n\t\tkey: 'init',\n\t\tvalue: function init() {\n\t\t\tvar _this = this;\n\n\t\t\tif (this.ready) {\n\t\t\t\t/**\n     * This View has already been initialized.\n     *\n     * @error ui-view-init-reinit\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('ui-view-init-reinit: This View has already been initialized.');\n\t\t\t}\n\n\t\t\treturn Promise.resolve()\n\t\t\t// Initialize collections in #_viewCollections.\n\t\t\t.then(function () {\n\t\t\t\treturn Promise.all(_this._viewCollections.map(function (c) {\n\t\t\t\t\treturn c.init();\n\t\t\t\t}));\n\t\t\t})\n\t\t\t// Spread the word that this view is ready!\n\t\t\t.then(function () {\n\t\t\t\t_this.ready = true;\n\t\t\t});\n\t\t}\n\n\t\t/**\n   * Destroys the view instance and child views located in {@link #_viewCollections}.\n   *\n   * @returns {Promise} A Promise resolved when the destruction process is finished.\n   */\n\n\t}, {\n\t\tkey: 'destroy',\n\t\tvalue: function destroy() {\n\t\t\tthis.stopListening();\n\n\t\t\tvar promises = this._viewCollections.map(function (c) {\n\t\t\t\treturn c.destroy();\n\t\t\t});\n\n\t\t\tthis._unboundChildren.clear();\n\t\t\tthis._viewCollections.clear();\n\n\t\t\tif (this.element) {\n\t\t\t\tthis.element.remove();\n\t\t\t}\n\n\t\t\tthis.element = this.template = this.locale = this.t = this._viewCollections = this._unboundChildren = null;\n\n\t\t\treturn Promise.all(promises);\n\t\t}\n\n\t\t/**\n   * Recursively traverses {@link #template} in search of {@link module:ui/view~View}\n   * instances and automatically registers them using {@link #addChildren} method.\n   *\n   * @protected\n   */\n\n\t}, {\n\t\tkey: '_addTemplateChildren',\n\t\tvalue: function _addTemplateChildren() {\n\t\t\tvar _this2 = this;\n\n\t\t\tvar search = function search(def) {\n\t\t\t\tif (def.children) {\n\t\t\t\t\tvar _iteratorNormalCompletion2 = true;\n\t\t\t\t\tvar _didIteratorError2 = false;\n\t\t\t\t\tvar _iteratorError2 = undefined;\n\n\t\t\t\t\ttry {\n\t\t\t\t\t\tfor (var _iterator2 = def.children[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {\n\t\t\t\t\t\t\tvar defOrView = _step2.value;\n\n\t\t\t\t\t\t\tif (defOrView instanceof View) {\n\t\t\t\t\t\t\t\t_this2.addChildren(defOrView);\n\t\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\t\tsearch(defOrView);\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t} catch (err) {\n\t\t\t\t\t\t_didIteratorError2 = true;\n\t\t\t\t\t\t_iteratorError2 = err;\n\t\t\t\t\t} finally {\n\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\tif (!_iteratorNormalCompletion2 && _iterator2.return) {\n\t\t\t\t\t\t\t\t_iterator2.return();\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} finally {\n\t\t\t\t\t\t\tif (_didIteratorError2) {\n\t\t\t\t\t\t\t\tthrow _iteratorError2;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t};\n\n\t\t\tsearch(this.template);\n\t\t}\n\t}, {\n\t\tkey: 'element',\n\t\tget: function get() {\n\t\t\tif (this._element) {\n\t\t\t\treturn this._element;\n\t\t\t}\n\n\t\t\t// No template means no element (a virtual view).\n\t\t\tif (!this.template) {\n\t\t\t\treturn null;\n\t\t\t}\n\n\t\t\tthis._addTemplateChildren();\n\n\t\t\treturn this._element = this.template.render();\n\t\t}\n\n\t\t/**\n   * @type {HTMLElement}\n   */\n\t\t,\n\t\tset: function set(el) {\n\t\t\tthis._element = el;\n\t\t}\n\n\t\t/**\n   * Shorthand for {@link module:ui/template~Template.bind}, bound to {@link ~View} on the first access.\n   *\n   * Cached {@link module:ui/template~Template.bind} object is stored in {@link #_bindTemplate}.\n   *\n   * @method #bindTemplate\n   */\n\n\t}, {\n\t\tkey: 'bindTemplate',\n\t\tget: function get() {\n\t\t\tif (this._bindTemplate) {\n\t\t\t\treturn this._bindTemplate;\n\t\t\t}\n\n\t\t\treturn this._bindTemplate = _template2.default.bind(this, this);\n\t\t}\n\t}]);\n\n\treturn View;\n}();\n\nexports.default = View;\n\n\n(0, _mix2.default)(View, _emittermixin2.default);\n(0, _mix2.default)(View, _observablemixin2.default);\n\n/***/ }),\n/* 8 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _slicedToArray = function () { function sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i[\"return\"]) _i[\"return\"](); } finally { if (_d) throw _e; } } return _arr; } return function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return sliceIterator(arr, i); } else { throw new TypeError(\"Invalid attempt to destructure non-iterable instance\"); } }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          */\n\n/**\n * @module utils/emittermixin\n */\n\nexports._getEmitterListenedTo = _getEmitterListenedTo;\nexports._setEmitterId = _setEmitterId;\nexports._getEmitterId = _getEmitterId;\n\nvar _eventinfo = __webpack_require__(401);\n\nvar _eventinfo2 = _interopRequireDefault(_eventinfo);\n\nvar _uid = __webpack_require__(65);\n\nvar _uid2 = _interopRequireDefault(_uid);\n\nvar _priorities = __webpack_require__(502);\n\nvar _priorities2 = _interopRequireDefault(_priorities);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _toConsumableArray(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } else { return Array.from(arr); } }\n\nvar _listeningTo = Symbol('listeningTo');\nvar _emitterId = Symbol('emitterId');\n\n/**\n * Mixin that injects the events API into its host.\n *\n * @mixin EmitterMixin\n * @implements module:utils/emittermixin~Emitter\n */\nvar EmitterMixin = {\n\t/**\n  * Registers a callback function to be executed when an event is fired. Events can be grouped in namespaces using `:`.\n  * When namespaced event is fired, it additionaly fires all callbacks for that namespace.\n  *\n  *\t\tmyEmitter.on( 'myGroup', genericCallback );\n  *\t\tmyEmitter.on( 'myGroup:myEvent', specificCallback );\n  *\t\tmyEmitter.fire( 'myGroup' ); // genericCallback is fired.\n  *\t\tmyEmitter.fire( 'myGroup:myEvent' ); // both genericCallback and specificCallback are fired.\n  *\t\tmyEmitter.fire( 'myGroup:foo' ); // genericCallback is fired even though there are no callbacks for \"foo\".\n  *\n  * @method #on\n  * @param {String} event The name of the event.\n  * @param {Function} callback The function to be called on event.\n  * @param {Object} [options={}] Additional options.\n  * @param {module:utils/priorities~PriorityString|Number} [options.priority='normal'] The priority of this event callback. The higher\n  * the priority value the sooner the callback will be fired. Events having the same priority are called in the\n  * order they were added.\n  * @param {Object} [options.context] The object that represents `this` in the callback. Defaults to the object firing the event.\n  */\n\ton: function on(event, callback) {\n\t\tvar options = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};\n\n\t\tcreateEventNamespace(this, event);\n\t\tvar lists = getCallbacksListsForNamespace(this, event);\n\t\tvar priority = _priorities2.default.get(options.priority);\n\n\t\tcallback = {\n\t\t\tcallback: callback,\n\t\t\tcontext: options.context || this,\n\t\t\tpriority: priority\n\t\t};\n\n\t\t// Add the callback to all callbacks list.\n\t\tvar _iteratorNormalCompletion = true;\n\t\tvar _didIteratorError = false;\n\t\tvar _iteratorError = undefined;\n\n\t\ttry {\n\t\t\tfor (var _iterator = lists[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\tvar callbacks = _step.value;\n\n\t\t\t\t// Add the callback to the list in the right priority position.\n\t\t\t\tvar added = false;\n\n\t\t\t\tfor (var i = 0; i < callbacks.length; i++) {\n\t\t\t\t\tif (callbacks[i].priority < priority) {\n\t\t\t\t\t\tcallbacks.splice(i, 0, callback);\n\t\t\t\t\t\tadded = true;\n\n\t\t\t\t\t\tbreak;\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\t// Add at the end, if right place was not found.\n\t\t\t\tif (!added) {\n\t\t\t\t\tcallbacks.push(callback);\n\t\t\t\t}\n\t\t\t}\n\t\t} catch (err) {\n\t\t\t_didIteratorError = true;\n\t\t\t_iteratorError = err;\n\t\t} finally {\n\t\t\ttry {\n\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t_iterator.return();\n\t\t\t\t}\n\t\t\t} finally {\n\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t},\n\n\n\t/**\n  * Registers a callback function to be executed on the next time the event is fired only. This is similar to\n  * calling {@link #on} followed by {@link #off} in the callback.\n  *\n  * @method #once\n  * @param {String} event The name of the event.\n  * @param {Function} callback The function to be called on event.\n  * @param {Object} [options={}] Additional options.\n  * @param {module:utils/priorities~PriorityString|Number} [options.priority='normal'] The priority of this event callback. The higher\n  * the priority value the sooner the callback will be fired. Events having the same priority are called in the\n  * order they were added.\n  * @param {Object} [options.context] The object that represents `this` in the callback. Defaults to the object firing the event.\n  */\n\tonce: function once(event, callback, options) {\n\t\tvar onceCallback = function onceCallback(event) {\n\t\t\t// Go off() at the first call.\n\t\t\tevent.off();\n\n\t\t\t// Go with the original callback.\n\t\t\tcallback.apply(this, arguments);\n\t\t};\n\n\t\t// Make a similar on() call, simply replacing the callback.\n\t\tthis.on(event, onceCallback, options);\n\t},\n\n\n\t/**\n  * Stops executing the callback on the given event.\n  *\n  * @method #off\n  * @param {String} event The name of the event.\n  * @param {Function} callback The function to stop being called.\n  * @param {Object} [context] The context object to be removed, pared with the given callback. To handle cases where\n  * the same callback is used several times with different contexts.\n  */\n\toff: function off(event, callback, context) {\n\t\tvar lists = getCallbacksListsForNamespace(this, event);\n\n\t\tvar _iteratorNormalCompletion2 = true;\n\t\tvar _didIteratorError2 = false;\n\t\tvar _iteratorError2 = undefined;\n\n\t\ttry {\n\t\t\tfor (var _iterator2 = lists[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {\n\t\t\t\tvar callbacks = _step2.value;\n\n\t\t\t\tfor (var i = 0; i < callbacks.length; i++) {\n\t\t\t\t\tif (callbacks[i].callback == callback) {\n\t\t\t\t\t\tif (!context || context == callbacks[i].context) {\n\t\t\t\t\t\t\t// Remove the callback from the list (fixing the next index).\n\t\t\t\t\t\t\tcallbacks.splice(i, 1);\n\t\t\t\t\t\t\ti--;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t} catch (err) {\n\t\t\t_didIteratorError2 = true;\n\t\t\t_iteratorError2 = err;\n\t\t} finally {\n\t\t\ttry {\n\t\t\t\tif (!_iteratorNormalCompletion2 && _iterator2.return) {\n\t\t\t\t\t_iterator2.return();\n\t\t\t\t}\n\t\t\t} finally {\n\t\t\t\tif (_didIteratorError2) {\n\t\t\t\t\tthrow _iteratorError2;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t},\n\n\n\t/**\n  * Registers a callback function to be executed when an event is fired in a specific (emitter) object.\n  *\n  * @method #listenTo\n  * @param {module:utils/emittermixin~Emitter} emitter The object that fires the event.\n  * @param {String} event The name of the event.\n  * @param {Function} callback The function to be called on event.\n  * @param {Object} [options={}] Additional options.\n  * @param {module:utils/priorities~PriorityString|Number} [options.priority='normal'] The priority of this event callback. The higher\n  * the priority value the sooner the callback will be fired. Events having the same priority are called in the\n  * order they were added.\n  * @param {Object} [options.context] The object that represents `this` in the callback. Defaults to the object firing the event.\n  */\n\tlistenTo: function listenTo(emitter, event, callback, options) {\n\t\tvar emitters = void 0,\n\t\t    emitterId = void 0,\n\t\t    emitterInfo = void 0,\n\t\t    eventCallbacks = void 0;\n\n\t\t// _listeningTo contains a list of emitters that this object is listening to.\n\t\t// This list has the following format:\n\t\t//\n\t\t// _listeningTo: {\n\t\t//     emitterId: {\n\t\t//         emitter: emitter,\n\t\t//         callbacks: {\n\t\t//             event1: [ callback1, callback2, ... ]\n\t\t//             ....\n\t\t//         }\n\t\t//     },\n\t\t//     ...\n\t\t// }\n\n\t\tif (!this[_listeningTo]) {\n\t\t\tthis[_listeningTo] = {};\n\t\t}\n\n\t\temitters = this[_listeningTo];\n\n\t\tif (!_getEmitterId(emitter)) {\n\t\t\t_setEmitterId(emitter);\n\t\t}\n\n\t\temitterId = _getEmitterId(emitter);\n\n\t\tif (!(emitterInfo = emitters[emitterId])) {\n\t\t\temitterInfo = emitters[emitterId] = {\n\t\t\t\temitter: emitter,\n\t\t\t\tcallbacks: {}\n\t\t\t};\n\t\t}\n\n\t\tif (!(eventCallbacks = emitterInfo.callbacks[event])) {\n\t\t\teventCallbacks = emitterInfo.callbacks[event] = [];\n\t\t}\n\n\t\teventCallbacks.push(callback);\n\n\t\t// Finally register the callback to the event.\n\t\temitter.on(event, callback, options);\n\t},\n\n\n\t/**\n  * Stops listening for events. It can be used at different levels:\n  *\n  * * To stop listening to a specific callback.\n  * * To stop listening to a specific event.\n  * * To stop listening to all events fired by a specific object.\n  * * To stop listening to all events fired by all object.\n  *\n  * @method #stopListening\n  * @param {module:utils/emittermixin~Emitter} [emitter] The object to stop listening to. If omitted, stops it for all objects.\n  * @param {String} [event] (Requires the `emitter`) The name of the event to stop listening to. If omitted, stops it\n  * for all events from `emitter`.\n  * @param {Function} [callback] (Requires the `event`) The function to be removed from the call list for the given\n  * `event`.\n  */\n\tstopListening: function stopListening(emitter, event, callback) {\n\t\tvar emitters = this[_listeningTo];\n\t\tvar emitterId = emitter && _getEmitterId(emitter);\n\t\tvar emitterInfo = emitters && emitterId && emitters[emitterId];\n\t\tvar eventCallbacks = emitterInfo && event && emitterInfo.callbacks[event];\n\n\t\t// Stop if nothing has been listened.\n\t\tif (!emitters || emitter && !emitterInfo || event && !eventCallbacks) {\n\t\t\treturn;\n\t\t}\n\n\t\t// All params provided. off() that single callback.\n\t\tif (callback) {\n\t\t\temitter.off(event, callback);\n\t\t}\n\t\t// Only `emitter` and `event` provided. off() all callbacks for that event.\n\t\telse if (eventCallbacks) {\n\t\t\t\twhile (callback = eventCallbacks.pop()) {\n\t\t\t\t\temitter.off(event, callback);\n\t\t\t\t}\n\t\t\t\tdelete emitterInfo.callbacks[event];\n\t\t\t}\n\t\t\t// Only `emitter` provided. off() all events for that emitter.\n\t\t\telse if (emitterInfo) {\n\t\t\t\t\tfor (event in emitterInfo.callbacks) {\n\t\t\t\t\t\tthis.stopListening(emitter, event);\n\t\t\t\t\t}\n\t\t\t\t\tdelete emitters[emitterId];\n\t\t\t\t}\n\t\t\t\t// No params provided. off() all emitters.\n\t\t\t\telse {\n\t\t\t\t\t\tfor (emitterId in emitters) {\n\t\t\t\t\t\t\tthis.stopListening(emitters[emitterId].emitter);\n\t\t\t\t\t\t}\n\t\t\t\t\t\tdelete this[_listeningTo];\n\t\t\t\t\t}\n\t},\n\n\n\t/**\n  * Fires an event, executing all callbacks registered for it.\n  *\n  * The first parameter passed to callbacks is an {@link module:utils/eventinfo~EventInfo} object,\n  * followed by the optional `args` provided in the `fire()` method call.\n  *\n  * @method #fire\n  * @param {String|module:utils/eventinfo~EventInfo} eventOrInfo The name of the event or `EventInfo` object if event is delegated.\n  * @param {...*} [args] Additional arguments to be passed to the callbacks.\n  */\n\tfire: function fire(eventOrInfo) {\n\t\tvar eventInfo = eventOrInfo instanceof _eventinfo2.default ? eventOrInfo : new _eventinfo2.default(this, eventOrInfo);\n\t\tvar event = eventInfo.name;\n\t\tvar callbacks = getCallbacksForEvent(this, event);\n\n\t\t// Record that the event passed this emitter on its path.\n\t\teventInfo.path.push(this);\n\n\t\t// Handle event listener callbacks first.\n\n\t\tfor (var _len = arguments.length, args = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {\n\t\t\targs[_key - 1] = arguments[_key];\n\t\t}\n\n\t\tif (callbacks) {\n\t\t\t// Arguments passed to each callback.\n\t\t\tvar callbackArgs = [eventInfo].concat(args);\n\n\t\t\t// Copying callbacks array is the easiest and most secure way of preventing infinite loops, when event callbacks\n\t\t\t// are added while processing other callbacks. Previous solution involved adding counters (unique ids) but\n\t\t\t// failed if callbacks were added to the queue before currently processed callback.\n\t\t\t// If this proves to be too inefficient, another method is to change `.on()` so callbacks are stored if same\n\t\t\t// event is currently processed. Then, `.fire()` at the end, would have to add all stored events.\n\t\t\tcallbacks = Array.from(callbacks);\n\n\t\t\tfor (var i = 0; i < callbacks.length; i++) {\n\t\t\t\tcallbacks[i].callback.apply(callbacks[i].context, callbackArgs);\n\n\t\t\t\t// Remove the callback from future requests if off() has been called.\n\t\t\t\tif (eventInfo.off.called) {\n\t\t\t\t\t// Remove the called mark for the next calls.\n\t\t\t\t\tdelete eventInfo.off.called;\n\n\t\t\t\t\tthis.off(event, callbacks[i].callback, callbacks[i].context);\n\t\t\t\t}\n\n\t\t\t\t// Do not execute next callbacks if stop() was called.\n\t\t\t\tif (eventInfo.stop.called) {\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t// Delegate event to other emitters if needed.\n\t\tif (this._delegations) {\n\t\t\tvar destinations = this._delegations.get(event);\n\t\t\tvar passAllDestinations = this._delegations.get('*');\n\n\t\t\tif (destinations) {\n\t\t\t\tfireDelegatedEvents(destinations, eventInfo, args);\n\t\t\t}\n\n\t\t\tif (passAllDestinations) {\n\t\t\t\tfireDelegatedEvents(passAllDestinations, eventInfo, args);\n\t\t\t}\n\t\t}\n\t},\n\n\n\t/**\n  * Delegates selected events to another {@link module:utils/emittermixin~Emitter}. For instance:\n  *\n  *\t\temitterA.delegate( 'eventX' ).to( emitterB );\n  *\t\temitterA.delegate( 'eventX', 'eventY' ).to( emitterC );\n  *\n  * then `eventX` is delegated (fired by) `emitterB` and `emitterC` along with `data`:\n  *\n  *\t\temitterA.fire( 'eventX', data );\n  *\n  * and `eventY` is delegated (fired by) `emitterC` along with `data`:\n  *\n  *\t\temitterA.fire( 'eventY', data );\n  *\n  * @method #delegate\n  * @param {...String} events Event names that will be delegated to another emitter.\n  * @returns {module:utils/emittermixin~EmitterMixinDelegateChain}\n  */\n\tdelegate: function delegate() {\n\t\tvar _this = this;\n\n\t\tfor (var _len2 = arguments.length, events = Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {\n\t\t\tevents[_key2] = arguments[_key2];\n\t\t}\n\n\t\treturn {\n\t\t\tto: function to(emitter, nameOrFunction) {\n\t\t\t\tif (!_this._delegations) {\n\t\t\t\t\t_this._delegations = new Map();\n\t\t\t\t}\n\n\t\t\t\tvar _iteratorNormalCompletion3 = true;\n\t\t\t\tvar _didIteratorError3 = false;\n\t\t\t\tvar _iteratorError3 = undefined;\n\n\t\t\t\ttry {\n\t\t\t\t\tfor (var _iterator3 = events[Symbol.iterator](), _step3; !(_iteratorNormalCompletion3 = (_step3 = _iterator3.next()).done); _iteratorNormalCompletion3 = true) {\n\t\t\t\t\t\tvar eventName = _step3.value;\n\n\t\t\t\t\t\tvar destinations = _this._delegations.get(eventName);\n\n\t\t\t\t\t\tif (!destinations) {\n\t\t\t\t\t\t\t_this._delegations.set(eventName, new Map([[emitter, nameOrFunction]]));\n\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\tdestinations.set(emitter, nameOrFunction);\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t} catch (err) {\n\t\t\t\t\t_didIteratorError3 = true;\n\t\t\t\t\t_iteratorError3 = err;\n\t\t\t\t} finally {\n\t\t\t\t\ttry {\n\t\t\t\t\t\tif (!_iteratorNormalCompletion3 && _iterator3.return) {\n\t\t\t\t\t\t\t_iterator3.return();\n\t\t\t\t\t\t}\n\t\t\t\t\t} finally {\n\t\t\t\t\t\tif (_didIteratorError3) {\n\t\t\t\t\t\t\tthrow _iteratorError3;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t};\n\t},\n\n\n\t/**\n  * Stops delegating events. It can be used at different levels:\n  *\n  * * To stop delegating all events.\n  * * To stop delegating a specific event to all emitters.\n  * * To stop delegating a specific event to a specific emitter.\n  *\n  * @method #stopDelegating\n  * @param {String} [event] The name of the event to stop delegating. If omitted, stops it all delegations.\n  * @param {module:utils/emittermixin~Emitter} [emitter] (requires `event`) The object to stop delegating a particular event to.\n  * If omitted, stops delegation of `event` to all emitters.\n  */\n\tstopDelegating: function stopDelegating(event, emitter) {\n\t\tif (!this._delegations) {\n\t\t\treturn;\n\t\t}\n\n\t\tif (!event) {\n\t\t\tthis._delegations.clear();\n\t\t} else if (!emitter) {\n\t\t\tthis._delegations.delete(event);\n\t\t} else {\n\t\t\tvar destinations = this._delegations.get(event);\n\n\t\t\tif (destinations) {\n\t\t\t\tdestinations.delete(emitter);\n\t\t\t}\n\t\t}\n\t}\n};\n\nexports.default = EmitterMixin;\n\n/**\n * Checks if `listeningEmitter` listens to an emitter with given `listenedToEmitterId` and if so, returns that emitter.\n * If not, returns `null`.\n *\n * @protected\n * @param {module:utils/emittermixin~EmitterMixin} listeningEmitter Emitter that listens.\n * @param {String} listenedToEmitterId Unique emitter id of emitter listened to.\n * @returns {module:utils/emittermixin~EmitterMixin|null}\n */\n\nfunction _getEmitterListenedTo(listeningEmitter, listenedToEmitterId) {\n\tif (listeningEmitter[_listeningTo] && listeningEmitter[_listeningTo][listenedToEmitterId]) {\n\t\treturn listeningEmitter[_listeningTo][listenedToEmitterId].emitter;\n\t}\n\n\treturn null;\n}\n\n/**\n * Sets emitter's unique id.\n *\n * **Note:** `_emitterId` can be set only once.\n *\n * @protected\n * @param {module:utils/emittermixin~EmitterMixin} emitter Emitter for which id will be set.\n * @param {String} [id] Unique id to set. If not passed, random unique id will be set.\n */\nfunction _setEmitterId(emitter, id) {\n\tif (!emitter[_emitterId]) {\n\t\temitter[_emitterId] = id || (0, _uid2.default)();\n\t}\n}\n\n/**\n * Returns emitter's unique id.\n *\n * @protected\n * @param {module:utils/emittermixin~EmitterMixin} emitter Emitter which id will be returned.\n */\nfunction _getEmitterId(emitter) {\n\treturn emitter[_emitterId];\n}\n\n// Gets the internal `_events` property of the given object.\n// `_events` property store all lists with callbacks for registered event names.\n// If there were no events registered on the object, empty `_events` object is created.\nfunction getEvents(source) {\n\tif (!source._events) {\n\t\tObject.defineProperty(source, '_events', {\n\t\t\tvalue: {}\n\t\t});\n\t}\n\n\treturn source._events;\n}\n\n// Creates event node for generic-specific events relation architecture.\nfunction makeEventNode() {\n\treturn {\n\t\tcallbacks: [],\n\t\tchildEvents: []\n\t};\n}\n\n// Creates an architecture for generic-specific events relation.\n// If needed, creates all events for given eventName, i.e. if the first registered event\n// is foo:bar:abc, it will create foo:bar:abc, foo:bar and foo event and tie them together.\n// It also copies callbacks from more generic events to more specific events when\n// specific events are created.\nfunction createEventNamespace(source, eventName) {\n\tvar events = getEvents(source);\n\n\t// First, check if the event we want to add to the structure already exists.\n\tif (events[eventName]) {\n\t\t// If it exists, we don't have to do anything.\n\t\treturn;\n\t}\n\n\t// In other case, we have to create the structure for the event.\n\t// Note, that we might need to create intermediate events too.\n\t// I.e. if foo:bar:abc is being registered and we only have foo in the structure,\n\t// we need to also register foo:bar.\n\n\t// Currently processed event name.\n\tvar name = eventName;\n\t// Name of the event that is a child event for currently processed event.\n\tvar childEventName = null;\n\n\t// Array containing all newly created specific events.\n\tvar newEventNodes = [];\n\n\t// While loop can't check for ':' index because we have to handle generic events too.\n\t// In each loop, we truncate event name, going from the most specific name to the generic one.\n\t// I.e. foo:bar:abc -> foo:bar -> foo.\n\twhile (name !== '') {\n\t\tif (events[name]) {\n\t\t\t// If the currently processed event name is already registered, we can be sure\n\t\t\t// that it already has all the structure created, so we can break the loop here\n\t\t\t// as no more events need to be registered.\n\t\t\tbreak;\n\t\t}\n\n\t\t// If this event is not yet registered, create a new object for it.\n\t\tevents[name] = makeEventNode();\n\t\t// Add it to the array with newly created events.\n\t\tnewEventNodes.push(events[name]);\n\n\t\t// Add previously processed event name as a child of this event.\n\t\tif (childEventName) {\n\t\t\tevents[name].childEvents.push(childEventName);\n\t\t}\n\n\t\tchildEventName = name;\n\t\t// If `.lastIndexOf()` returns -1, `.substr()` will return '' which will break the loop.\n\t\tname = name.substr(0, name.lastIndexOf(':'));\n\t}\n\n\tif (name !== '') {\n\t\t// If name is not empty, we found an already registered event that was a parent of the\n\t\t// event we wanted to register.\n\n\t\t// Copy that event's callbacks to newly registered events.\n\t\tvar _iteratorNormalCompletion4 = true;\n\t\tvar _didIteratorError4 = false;\n\t\tvar _iteratorError4 = undefined;\n\n\t\ttry {\n\t\t\tfor (var _iterator4 = newEventNodes[Symbol.iterator](), _step4; !(_iteratorNormalCompletion4 = (_step4 = _iterator4.next()).done); _iteratorNormalCompletion4 = true) {\n\t\t\t\tvar node = _step4.value;\n\n\t\t\t\tnode.callbacks = events[name].callbacks.slice();\n\t\t\t}\n\n\t\t\t// Add last newly created event to the already registered event.\n\t\t} catch (err) {\n\t\t\t_didIteratorError4 = true;\n\t\t\t_iteratorError4 = err;\n\t\t} finally {\n\t\t\ttry {\n\t\t\t\tif (!_iteratorNormalCompletion4 && _iterator4.return) {\n\t\t\t\t\t_iterator4.return();\n\t\t\t\t}\n\t\t\t} finally {\n\t\t\t\tif (_didIteratorError4) {\n\t\t\t\t\tthrow _iteratorError4;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\tevents[name].childEvents.push(childEventName);\n\t}\n}\n\n// Gets an array containing callbacks list for a given event and it's more specific events.\n// I.e. if given event is foo:bar and there is also foo:bar:abc event registered, this will\n// return callback list of foo:bar and foo:bar:abc (but not foo).\n// Returns empty array if given event has not been yet registered.\nfunction getCallbacksListsForNamespace(source, eventName) {\n\tvar eventNode = getEvents(source)[eventName];\n\n\tif (!eventNode) {\n\t\treturn [];\n\t}\n\n\tvar callbacksLists = [eventNode.callbacks];\n\n\tfor (var i = 0; i < eventNode.childEvents.length; i++) {\n\t\tvar childCallbacksLists = getCallbacksListsForNamespace(source, eventNode.childEvents[i]);\n\n\t\tcallbacksLists = callbacksLists.concat(childCallbacksLists);\n\t}\n\n\treturn callbacksLists;\n}\n\n// Get the list of callbacks for a given event, but only if there any callbacks have been registered.\n// If there are no callbacks registered for given event, it checks if this is a specific event and looks\n// for callbacks for it's more generic version.\nfunction getCallbacksForEvent(source, eventName) {\n\tvar event = void 0;\n\n\tif (!source._events || !(event = source._events[eventName]) || !event.callbacks.length) {\n\t\t// There are no callbacks registered for specified eventName.\n\t\t// But this could be a specific-type event that is in a namespace.\n\t\tif (eventName.indexOf(':') > -1) {\n\t\t\t// If the eventName is specific, try to find callback lists for more generic event.\n\t\t\treturn getCallbacksForEvent(source, eventName.substr(0, eventName.lastIndexOf(':')));\n\t\t} else {\n\t\t\t// If this is a top-level generic event, return null;\n\t\t\treturn null;\n\t\t}\n\t}\n\n\treturn event.callbacks;\n}\n\n// Fires delegated events for given map of destinations.\n//\n// @private\n// * @param {Map.<utils.Emitter>} destinations A map containing `[ {@link utils.Emitter}, \"event name\" ]` pair destinations.\n// * @param {utils.EventInfo} eventInfo The original event info object.\n// * @param {Array.<*>} fireArgs Arguments the original event was fired with.\nfunction fireDelegatedEvents(destinations, eventInfo, fireArgs) {\n\tvar _iteratorNormalCompletion5 = true;\n\tvar _didIteratorError5 = false;\n\tvar _iteratorError5 = undefined;\n\n\ttry {\n\t\tfor (var _iterator5 = destinations[Symbol.iterator](), _step5; !(_iteratorNormalCompletion5 = (_step5 = _iterator5.next()).done); _iteratorNormalCompletion5 = true) {\n\t\t\tvar _step5$value = _slicedToArray(_step5.value, 2),\n\t\t\t    emitter = _step5$value[0],\n\t\t\t    name = _step5$value[1];\n\n\t\t\tif (!name) {\n\t\t\t\tname = eventInfo.name;\n\t\t\t} else if (typeof name == 'function') {\n\t\t\t\tname = name(eventInfo.name);\n\t\t\t}\n\n\t\t\tvar delegatedInfo = new _eventinfo2.default(eventInfo.source, name);\n\n\t\t\tdelegatedInfo.path = [].concat(_toConsumableArray(eventInfo.path));\n\n\t\t\temitter.fire.apply(emitter, [delegatedInfo].concat(_toConsumableArray(fireArgs)));\n\t\t}\n\t} catch (err) {\n\t\t_didIteratorError5 = true;\n\t\t_iteratorError5 = err;\n\t} finally {\n\t\ttry {\n\t\t\tif (!_iteratorNormalCompletion5 && _iterator5.return) {\n\t\t\t\t_iterator5.return();\n\t\t\t}\n\t\t} finally {\n\t\t\tif (_didIteratorError5) {\n\t\t\t\tthrow _iteratorError5;\n\t\t\t}\n\t\t}\n\t}\n}\n\n/**\n * Interface representing classes which mix in {@link module:utils/emittermixin~EmitterMixin}.\n *\n * @interface Emitter\n */\n\n/**\n * The return value of {@link ~EmitterMixin#delegate}.\n *\n * @interface module:utils/emittermixin~EmitterMixinDelegateChain\n */\n\n/**\n * Selects destination for {@link module:utils/emittermixin~EmitterMixin#delegate} events.\n *\n * @method #to\n * @param {module:utils/emittermixin~Emitter} emitter An `EmitterMixin` instance which is the destination for delegated events.\n * @param {String|Function} nameOrFunction A custom event name or function which converts the original name string.\n */\n\n/***/ }),\n/* 9 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _apply = __webpack_require__(197);\n\nvar _apply2 = _interopRequireDefault(_apply);\n\nvar _toInteger = __webpack_require__(14);\n\nvar _toInteger2 = _interopRequireDefault(_toInteger);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** Used as the `TypeError` message for \"Functions\" methods. */\nvar FUNC_ERROR_TEXT = 'Expected a function';\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeMax = Math.max;\n\n/**\n * Creates a function that invokes `func` with the `this` binding of the\n * created function and arguments from `start` and beyond provided as\n * an array.\n *\n * **Note:** This method is based on the\n * [rest parameter](https://mdn.io/rest_parameters).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Function\n * @param {Function} func The function to apply a rest parameter to.\n * @param {number} [start=func.length-1] The start position of the rest parameter.\n * @returns {Function} Returns the new function.\n * @example\n *\n * var say = _.rest(function(what, names) {\n *   return what + ' ' + _.initial(names).join(', ') +\n *     (_.size(names) > 1 ? ', & ' : '') + _.last(names);\n * });\n *\n * say('hello', 'fred', 'barney', 'pebbles');\n * // => 'hello fred, barney, & pebbles'\n */\nfunction rest(func, start) {\n  if (typeof func != 'function') {\n    throw new TypeError(FUNC_ERROR_TEXT);\n  }\n  start = nativeMax(start === undefined ? func.length - 1 : (0, _toInteger2.default)(start), 0);\n  return function () {\n    var args = arguments,\n        index = -1,\n        length = nativeMax(args.length - start, 0),\n        array = Array(length);\n\n    while (++index < length) {\n      array[index] = args[start + index];\n    }\n    switch (start) {\n      case 0:\n        return func.call(this, array);\n      case 1:\n        return func.call(this, args[0], array);\n      case 2:\n        return func.call(this, args[0], args[1], array);\n    }\n    var otherArgs = Array(start + 1);\n    index = -1;\n    while (++index < start) {\n      otherArgs[index] = args[index];\n    }\n    otherArgs[start] = array;\n    return (0, _apply2.default)(func, this, otherArgs);\n  };\n}\n\nexports.default = rest;\n\n/***/ }),\n/* 10 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; };\n\nvar _baseMatches = __webpack_require__(423);\n\nvar _baseMatches2 = _interopRequireDefault(_baseMatches);\n\nvar _baseMatchesProperty = __webpack_require__(424);\n\nvar _baseMatchesProperty2 = _interopRequireDefault(_baseMatchesProperty);\n\nvar _identity = __webpack_require__(231);\n\nvar _identity2 = _interopRequireDefault(_identity);\n\nvar _isArray = __webpack_require__(11);\n\nvar _isArray2 = _interopRequireDefault(_isArray);\n\nvar _property = __webpack_require__(494);\n\nvar _property2 = _interopRequireDefault(_property);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * The base implementation of `_.iteratee`.\n *\n * @private\n * @param {*} [value=_.identity] The value to convert to an iteratee.\n * @returns {Function} Returns the iteratee.\n */\nfunction baseIteratee(value) {\n  // Don't store the `typeof` result in a variable to avoid a JIT bug in Safari 9.\n  // See https://bugs.webkit.org/show_bug.cgi?id=156034 for more details.\n  if (typeof value == 'function') {\n    return value;\n  }\n  if (value == null) {\n    return _identity2.default;\n  }\n  if ((typeof value === 'undefined' ? 'undefined' : _typeof(value)) == 'object') {\n    return (0, _isArray2.default)(value) ? (0, _baseMatchesProperty2.default)(value[0], value[1]) : (0, _baseMatches2.default)(value);\n  }\n  return (0, _property2.default)(value);\n}\n\nexports.default = baseIteratee;\n\n/***/ }),\n/* 11 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * Checks if `value` is classified as an `Array` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @type {Function}\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is correctly classified,\n *  else `false`.\n * @example\n *\n * _.isArray([1, 2, 3]);\n * // => true\n *\n * _.isArray(document.body.children);\n * // => false\n *\n * _.isArray('abc');\n * // => false\n *\n * _.isArray(_.noop);\n * // => false\n */\nvar isArray = Array.isArray;\n\nexports.default = isArray;\n\n/***/ }),\n/* 12 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _isArrayLike = __webpack_require__(95);\n\nvar _isArrayLike2 = _interopRequireDefault(_isArrayLike);\n\nvar _isObjectLike = __webpack_require__(43);\n\nvar _isObjectLike2 = _interopRequireDefault(_isObjectLike);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * This method is like `_.isArrayLike` except that it also checks if `value`\n * is an object.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an array-like object,\n *  else `false`.\n * @example\n *\n * _.isArrayLikeObject([1, 2, 3]);\n * // => true\n *\n * _.isArrayLikeObject(document.body.children);\n * // => true\n *\n * _.isArrayLikeObject('abc');\n * // => false\n *\n * _.isArrayLikeObject(_.noop);\n * // => false\n */\nfunction isArrayLikeObject(value) {\n  return (0, _isObjectLike2.default)(value) && (0, _isArrayLike2.default)(value);\n}\n\nexports.default = isArrayLikeObject;\n\n/***/ }),\n/* 13 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; };\n\n/**\n * Checks if `value` is the\n * [language type](http://www.ecma-international.org/ecma-262/6.0/#sec-ecmascript-language-types)\n * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an object, else `false`.\n * @example\n *\n * _.isObject({});\n * // => true\n *\n * _.isObject([1, 2, 3]);\n * // => true\n *\n * _.isObject(_.noop);\n * // => true\n *\n * _.isObject(null);\n * // => false\n */\nfunction isObject(value) {\n  var type = typeof value === 'undefined' ? 'undefined' : _typeof(value);\n  return !!value && (type == 'object' || type == 'function');\n}\n\nexports.default = isObject;\n\n/***/ }),\n/* 14 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _toFinite = __webpack_require__(496);\n\nvar _toFinite2 = _interopRequireDefault(_toFinite);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Converts `value` to an integer.\n *\n * **Note:** This function is loosely based on\n * [`ToInteger`](http://www.ecma-international.org/ecma-262/6.0/#sec-tointeger).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {number} Returns the converted integer.\n * @example\n *\n * _.toInteger(3.2);\n * // => 3\n *\n * _.toInteger(Number.MIN_VALUE);\n * // => 0\n *\n * _.toInteger(Infinity);\n * // => 1.7976931348623157e+308\n *\n * _.toInteger('3.2');\n * // => 3\n */\nfunction toInteger(value) {\n  var result = (0, _toFinite2.default)(value),\n      remainder = result % 1;\n\n  return result === result ? remainder ? result - remainder : result : 0;\n}\n\nexports.default = toInteger;\n\n/***/ }),\n/* 15 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module core/command/command\n */\n\nvar _observablemixin = __webpack_require__(31);\n\nvar _observablemixin2 = _interopRequireDefault(_observablemixin);\n\nvar _mix = __webpack_require__(4);\n\nvar _mix2 = _interopRequireDefault(_mix);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * The base class for CKEditor commands.\n *\n * Commands are main way to manipulate editor contents and state. They are mostly used by UI elements (or by other\n * commands) to make changes in Tree Model. Commands are available in every part of code that has access to\n * {@link module:core/editor/editor~Editor} instance, since they are registered in it and executed through\n * {@link module:core/editor/editor~Editor#execute}.\n * Commands instances are available through {@link module:core/editor/editor~Editor#commands}.\n *\n * This is an abstract base class for all commands.\n *\n * @mixes module:utils/observablemixin~ObservaleMixin\n */\nvar Command = function () {\n\t/**\n  * Creates a new Command instance.\n  *\n  * @param {module:core/editor/editor~Editor} editor Editor on which this command will be used.\n  */\n\tfunction Command(editor) {\n\t\tvar _this = this;\n\n\t\t_classCallCheck(this, Command);\n\n\t\t/**\n   * Editor on which this command will be used.\n   *\n   * @readonly\n   * @member {module:core/editor/editor~Editor} #editor\n   */\n\t\tthis.editor = editor;\n\n\t\t/**\n   * Flag indicating whether a command is enabled or disabled.\n   * A disabled command should do nothing upon it's execution.\n   *\n   * @observable\n   * @member {Boolean} #isEnabled\n   */\n\t\tthis.set('isEnabled', true);\n\n\t\t// If schema checking function is specified, add it to the `refreshState` listeners.\n\t\t// Feature will be disabled if it does not apply to schema requirements.\n\t\tif (this._checkEnabled) {\n\t\t\tthis.on('refreshState', function (evt, data) {\n\t\t\t\tdata.isEnabled = _this._checkEnabled();\n\t\t\t});\n\t\t}\n\t}\n\n\t_createClass(Command, [{\n\t\tkey: 'destroy',\n\t\tvalue: function destroy() {\n\t\t\tthis.stopListening();\n\t\t}\n\n\t\t/**\n   * Fires `refreshState` event and checks it's resolve value to decide whether command should be enabled or not.\n   * Other parts of code might listen to `refreshState` event on this command and add their callbacks. This\n   * way the responsibility of deciding whether a command should be enabled is shared.\n   *\n   * @fires refreshState\n   */\n\n\t}, {\n\t\tkey: 'refreshState',\n\t\tvalue: function refreshState() {\n\t\t\tvar data = { isEnabled: true };\n\t\t\tthis.fire('refreshState', data);\n\n\t\t\tthis.isEnabled = data.isEnabled;\n\t\t}\n\n\t\t/**\n   * Executes the command if it is enabled.\n   *\n   * @protected\n   * @param {*} param Parameter passed to {@link module:core/editor/editor~Editor#execute execute} method of this command.\n   */\n\n\t}, {\n\t\tkey: '_execute',\n\t\tvalue: function _execute(param) {\n\t\t\tif (this.isEnabled) {\n\t\t\t\tthis._doExecute(param);\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Disables the command. This should be used only by the command itself. Other parts of code should add\n   * listeners to `refreshState` event.\n   *\n   * @protected\n   */\n\n\t}, {\n\t\tkey: '_disable',\n\t\tvalue: function _disable() {\n\t\t\tthis.on('refreshState', disableCallback);\n\t\t\tthis.refreshState();\n\t\t}\n\n\t\t/**\n   * Enables the command (internally). This should be used only by the command itself. Command will be enabled if\n   * other listeners does not return false on `refreshState` event callbacks. Firing {@link #_enable}\n   * does not guarantee that {@link #isEnabled} will be set to true, as it depends on other listeners.\n   *\n   * @protected\n   */\n\n\t}, {\n\t\tkey: '_enable',\n\t\tvalue: function _enable() {\n\t\t\tthis.off('refreshState', disableCallback);\n\t\t\tthis.refreshState();\n\t\t}\n\n\t\t/**\n   * Executes command.\n   * This is an abstract method that should be overwritten in child classes.\n   *\n   * @protected\n   */\n\n\t}, {\n\t\tkey: '_doExecute',\n\t\tvalue: function _doExecute() {}\n\n\t\t/**\n   * Checks if a command should be enabled according to its own rules. Mostly it will check schema to see if the command\n   * is allowed to be executed in given position. This method can be defined in child class (but is not obligatory).\n   * If it is defined, it will be added as a callback to `refreshState` event.\n   *\n   * @protected\n   * @method #_checkEnabled\n   * @returns {Boolean} `true` if command should be enabled according to\n   * {@link module:engine/model/document~Document#schema}. `false` otherwise.\n   */\n\n\t}]);\n\n\treturn Command;\n}();\n\nexports.default = Command;\n\n\nfunction disableCallback(evt, data) {\n\tdata.isEnabled = false;\n}\n\n(0, _mix2.default)(Command, _observablemixin2.default);\n\n/**\n * Fired whenever command has to have its {@link #isEnabled} property refreshed. Every feature,\n * command or other class which needs to disable command (set `isEnabled` to `false`) should listen to this\n * event.\n *\n * @event refreshState\n * @param {Object} data\n * @param {Boolean} [data.isEnabled=true]\n */\n\n/***/ }),\n/* 16 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module engine/model/batch\n */\n\nexports.register = register;\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * `Batch` instance groups document changes ({@link module:engine/model/delta/delta~Delta deltas}). All deltas grouped in a single `Batch`\n * can be reverted together, so you can think about `Batch` as of a single undo step. If you want to extend given undo step you\n * can call another method on the same `Batch` object. If you want to create a separate undo step you can create a new `Batch`.\n *\n * For example to create two separate undo steps you can call:\n *\n *\t\tdoc.batch().insert( firstPosition, 'foo' );\n *\t\tdoc.batch().insert( secondPosition, 'bar' );\n *\n * To create a single undo step:\n *\n *\t\tconst batch = doc.batch();\n *\t\tbatch.insert( firstPosition, 'foo' );\n *\t\tbatch.insert( secondPosition, 'bar' );\n *\n * Note that all document modification methods (insert, remove, split, etc.) are chainable so you can shorten code to:\n *\n *\t\tdoc.batch().insert( firstPosition, 'foo' ).insert( secondPosition, 'bar' );\n */\nvar Batch = function () {\n\t/**\n  * Creates `Batch` instance. Not recommended to use directly, use {@link module:engine/model/document~Document#batch} instead.\n  *\n  * @param {module:engine/model/document~Document} document Document which this Batch changes.\n  * @param {'transparent'|'default'} [type='default'] Type of the batch.\n  */\n\tfunction Batch(document) {\n\t\tvar type = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 'default';\n\n\t\t_classCallCheck(this, Batch);\n\n\t\t/**\n   * Document which this batch changes.\n   *\n   * @readonly\n   * @member {module:engine/model/document~Document} module:engine/model/batch~Batch#document\n   */\n\t\tthis.document = document;\n\n\t\t/**\n   * Array of deltas which compose this batch.\n   *\n   * @readonly\n   * @member {Array.<module:engine/model/delta/delta~Delta>} module:engine/model/batch~Batch#deltas\n   */\n\t\tthis.deltas = [];\n\n\t\t/**\n   * Type of the batch.\n   *\n   * Can be one of the following values:\n   * * `'default'` - all \"normal\" batches, most commonly used type.\n   * * `'transparent'` - batch that should be ignored by other features, i.e. initial batch or collaborative editing changes.\n   *\n   * @readonly\n   * @member {'transparent'|'default'} module:engine/model/batch~Batch#type\n   */\n\t\tthis.type = type;\n\t}\n\n\t/**\n  * Returns this batch base version, which is equal to the base version of first delta in the batch.\n  * If there are no deltas in the batch, it returns `null`.\n  *\n  * @readonly\n  * @type {Number|null}\n  */\n\n\n\t_createClass(Batch, [{\n\t\tkey: 'addDelta',\n\n\n\t\t/**\n   * Adds delta to the batch instance. All modification methods (insert, remove, split, etc.) use this method\n   * to add created deltas.\n   *\n   * @param {module:engine/model/delta/delta~Delta} delta Delta to add.\n   * @return {module:engine/model/delta/delta~Delta} Added delta.\n   */\n\t\tvalue: function addDelta(delta) {\n\t\t\tdelta.batch = this;\n\t\t\tthis.deltas.push(delta);\n\n\t\t\treturn delta;\n\t\t}\n\n\t\t/**\n   * Gets an iterable collection of operations.\n   *\n   * @returns {Iterable.<module:engine/model/operation/operation~Operation>}\n   */\n\n\t}, {\n\t\tkey: 'getOperations',\n\t\tvalue: regeneratorRuntime.mark(function getOperations() {\n\t\t\tvar _iteratorNormalCompletion, _didIteratorError, _iteratorError, _iterator, _step, delta;\n\n\t\t\treturn regeneratorRuntime.wrap(function getOperations$(_context) {\n\t\t\t\twhile (1) {\n\t\t\t\t\tswitch (_context.prev = _context.next) {\n\t\t\t\t\t\tcase 0:\n\t\t\t\t\t\t\t_iteratorNormalCompletion = true;\n\t\t\t\t\t\t\t_didIteratorError = false;\n\t\t\t\t\t\t\t_iteratorError = undefined;\n\t\t\t\t\t\t\t_context.prev = 3;\n\t\t\t\t\t\t\t_iterator = this.deltas[Symbol.iterator]();\n\n\t\t\t\t\t\tcase 5:\n\t\t\t\t\t\t\tif (_iteratorNormalCompletion = (_step = _iterator.next()).done) {\n\t\t\t\t\t\t\t\t_context.next = 11;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\tdelta = _step.value;\n\t\t\t\t\t\t\treturn _context.delegateYield(delta.operations, 't0', 8);\n\n\t\t\t\t\t\tcase 8:\n\t\t\t\t\t\t\t_iteratorNormalCompletion = true;\n\t\t\t\t\t\t\t_context.next = 5;\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase 11:\n\t\t\t\t\t\t\t_context.next = 17;\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase 13:\n\t\t\t\t\t\t\t_context.prev = 13;\n\t\t\t\t\t\t\t_context.t1 = _context['catch'](3);\n\t\t\t\t\t\t\t_didIteratorError = true;\n\t\t\t\t\t\t\t_iteratorError = _context.t1;\n\n\t\t\t\t\t\tcase 17:\n\t\t\t\t\t\t\t_context.prev = 17;\n\t\t\t\t\t\t\t_context.prev = 18;\n\n\t\t\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\tcase 20:\n\t\t\t\t\t\t\t_context.prev = 20;\n\n\t\t\t\t\t\t\tif (!_didIteratorError) {\n\t\t\t\t\t\t\t\t_context.next = 23;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\tthrow _iteratorError;\n\n\t\t\t\t\t\tcase 23:\n\t\t\t\t\t\t\treturn _context.finish(20);\n\n\t\t\t\t\t\tcase 24:\n\t\t\t\t\t\t\treturn _context.finish(17);\n\n\t\t\t\t\t\tcase 25:\n\t\t\t\t\t\tcase 'end':\n\t\t\t\t\t\t\treturn _context.stop();\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}, getOperations, this, [[3, 13, 17, 25], [18,, 20, 24]]);\n\t\t})\n\t}, {\n\t\tkey: 'baseVersion',\n\t\tget: function get() {\n\t\t\treturn this.deltas.length > 0 ? this.deltas[0].baseVersion : null;\n\t\t}\n\t}]);\n\n\treturn Batch;\n}();\n\n/**\n * Function to register batch methods. To make code scalable `Batch` do not have modification\n * methods built in. They can be registered using this method.\n *\n * This method checks if there is no naming collision and throws `batch-register-taken` if the method name\n * is already taken.\n *\n * Besides that no magic happens here, the method is added to the `Batch` class prototype.\n *\n * For example:\n *\n *\t\tBatch.register( 'insert', function( position, nodes ) {\n *\t\t\t// You can use a class inheriting from `Delta` if that class should handle OT in a special way.\n *\t\t\tconst delta = new Delta();\n *\n *\t\t\t// Add delta to the Batch instance. It is important to add a delta to the batch before applying any operation.\n *\t\t\tthis.addDelta( delta );\n *\n *\t\t\t// Create operations which should be components of this delta.\n *\t\t\tconst operation = new InsertOperation( position, nodes, this.document.version );\n *\n *\t\t\t// Add operation to the delta. It is important to add operation before applying it.\n *\t\t\tdelta.addOperation( operation );\n *\n *\t\t\t// Remember to apply every operation, no magic, you need to do it manually.\n *\t\t\tthis.document.applyOperation( operation );\n *\n *\t\t\t// Make this method chainable.\n *\t\t\treturn this;\n *\t\t} );\n *\n * @method module:engine/model/batch~Batch.register\n * @param {String} name Method name.\n * @param {Function} creator Method body.\n */\n\n\nexports.default = Batch;\nfunction register(name, creator) {\n\tif (Batch.prototype[name]) {\n\t\t/**\n   * This batch method name is already taken.\n   *\n   * @error batch-register-taken\n   * @param {String} name\n   */\n\t\tthrow new _ckeditorerror2.default('model-batch-register-taken: This batch method name is already taken.', { name: name });\n\t}\n\n\tBatch.prototype[name] = creator;\n}\n\n/***/ }),\n/* 17 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module engine/model/delta/deltafactory\n */\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nvar _operationfactory = __webpack_require__(317);\n\nvar _operationfactory2 = _interopRequireDefault(_operationfactory);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nvar deserializers = new Map();\n\n/**\n * A factory class for creating operations.\n *\n * Delta is a single, from the user action point of view, change in the editable document, like insert, split or\n * rename element. Delta is composed of operations, which are unit changes needed to be done to execute user action.\n *\n * Multiple deltas are grouped into a single {@link module:engine/model/batch~Batch}.\n */\n\nvar DeltaFactory = function () {\n\tfunction DeltaFactory() {\n\t\t_classCallCheck(this, DeltaFactory);\n\t}\n\n\t_createClass(DeltaFactory, null, [{\n\t\tkey: 'fromJSON',\n\n\t\t/**\n   * Creates InsertDelta from deserialized object, i.e. from parsed JSON string.\n   *\n   * @param {Object} json\n   * @param {module:engine/model/document~Document} doc Document on which this delta will be applied.\n   * @returns {module:engine/model/delta/insertdelta~InsertDelta}\n   */\n\t\tvalue: function fromJSON(json, doc) {\n\t\t\tif (!deserializers.has(json.__className)) {\n\t\t\t\t/**\n     * This delta has no defined deserializer.\n     *\n     * @error delta-fromjson-no-deserializer\n     * @param {String} name\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('delta-fromjson-no-deserializer: This delta has no defined deserializer', { name: json.__className });\n\t\t\t}\n\n\t\t\tvar Delta = deserializers.get(json.__className);\n\n\t\t\tvar delta = new Delta();\n\n\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\tvar _didIteratorError = false;\n\t\t\tvar _iteratorError = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator = json.operations[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\tvar operation = _step.value;\n\n\t\t\t\t\tdelta.addOperation(_operationfactory2.default.fromJSON(operation, doc));\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError = true;\n\t\t\t\t_iteratorError = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn delta;\n\t\t}\n\n\t\t/**\n   * Registers a class for delta factory.\n   *\n   * @param {Function} Delta A delta class to register.\n   */\n\n\t}, {\n\t\tkey: 'register',\n\t\tvalue: function register(Delta) {\n\t\t\tdeserializers.set(Delta.className, Delta);\n\t\t}\n\t}]);\n\n\treturn DeltaFactory;\n}();\n\nexports.default = DeltaFactory;\n\n/***/ }),\n/* 18 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * Gets the last element of `array`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to query.\n * @returns {*} Returns the last element of `array`.\n * @example\n *\n * _.last([1, 2, 3]);\n * // => 3\n */\nfunction last(array) {\n  var length = array ? array.length : 0;\n  return length ? array[length - 1] : undefined;\n}\n\nexports.default = last;\n\n/***/ }),\n/* 19 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module engine/model/delta/delta\n */\n\nvar _clone = __webpack_require__(94);\n\nvar _clone2 = _interopRequireDefault(_clone);\n\nvar _deltafactory = __webpack_require__(17);\n\nvar _deltafactory2 = _interopRequireDefault(_deltafactory);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * Base class for all deltas.\n *\n * Delta is a single, from the user action point of view, change in the editable document, like insert, split or\n * rename element. Delta is composed of operations, which are unit changes needed to be done to execute user action.\n *\n * Multiple deltas are grouped into a single {@link module:engine/model/batch~Batch}.\n */\nvar Delta = function () {\n\t/**\n  * Creates a delta instance.\n  */\n\tfunction Delta() {\n\t\t_classCallCheck(this, Delta);\n\n\t\t/**\n   * {@link module:engine/model/batch~Batch} which delta is a part of. This property is null by default and set by the\n   * {@link module:engine/model/batch~Batch#addDelta} method.\n   *\n   * @readonly\n   * @member {module:engine/model/batch~Batch} module:engine/model/delta/delta~Delta#batch\n   */\n\t\tthis.batch = null;\n\n\t\t/**\n   * Array of operations which compose delta.\n   *\n   * @readonly\n   * @member {module:engine/model/operation/operation~Operation[]} module:engine/model/delta/delta~Delta#operations\n   */\n\t\tthis.operations = [];\n\t}\n\n\t/**\n  * Returns delta base version which is equal to the base version of the first operation in delta. If there\n  * are no operations in delta, returns `null`.\n  *\n  * @see module:engine/model/document~Document\n  * @type {Number|null}\n  */\n\n\n\t_createClass(Delta, [{\n\t\tkey: 'addOperation',\n\n\n\t\t/**\n   * Delta type.\n   *\n   * @readonly\n   * @member {String} #type\n   */\n\n\t\t/**\n   * Add operation to the delta.\n   *\n   * @param {module:engine/model/operation/operation~Operation} operation Operation instance.\n   */\n\t\tvalue: function addOperation(operation) {\n\t\t\toperation.delta = this;\n\t\t\tthis.operations.push(operation);\n\n\t\t\treturn operation;\n\t\t}\n\n\t\t/**\n   * Creates and returns a delta that has the same parameters as this delta.\n   *\n   * @returns {module:engine/model/delta/delta~Delta} Clone of this delta.\n   */\n\n\t}, {\n\t\tkey: 'clone',\n\t\tvalue: function clone() {\n\t\t\tvar delta = new this.constructor();\n\n\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\tvar _didIteratorError = false;\n\t\t\tvar _iteratorError = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator = this.operations[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\tvar op = _step.value;\n\n\t\t\t\t\tdelta.addOperation(op.clone());\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError = true;\n\t\t\t\t_iteratorError = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn delta;\n\t\t}\n\n\t\t/**\n   * Creates and returns a reverse delta. Reverse delta when executed right after the original delta will bring back\n   * tree model state to the point before the original delta execution. In other words, it reverses changes done\n   * by the original delta.\n   *\n   * Keep in mind that tree model state may change since executing the original delta, so reverse delta may be \"outdated\".\n   * In that case you will need to {@link module:engine/model/delta/transform~transform} it by all deltas that were executed after\n   * the original delta.\n   *\n   * @returns {module:engine/model/delta/delta~Delta} Reversed delta.\n   */\n\n\t}, {\n\t\tkey: 'getReversed',\n\t\tvalue: function getReversed() {\n\t\t\tvar delta = new this._reverseDeltaClass();\n\n\t\t\tvar _iteratorNormalCompletion2 = true;\n\t\t\tvar _didIteratorError2 = false;\n\t\t\tvar _iteratorError2 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator2 = this.operations[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {\n\t\t\t\t\tvar op = _step2.value;\n\n\t\t\t\t\tdelta.addOperation(op.getReversed());\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError2 = true;\n\t\t\t\t_iteratorError2 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion2 && _iterator2.return) {\n\t\t\t\t\t\t_iterator2.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError2) {\n\t\t\t\t\t\tthrow _iteratorError2;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tdelta.operations.reverse();\n\n\t\t\tfor (var i = 0; i < delta.operations.length; i++) {\n\t\t\t\tdelta.operations[i].baseVersion = this.operations[this.operations.length - 1].baseVersion + i + 1;\n\t\t\t}\n\n\t\t\treturn delta;\n\t\t}\n\n\t\t/**\n   * Custom toJSON method to make deltas serializable.\n   *\n   * @returns {Object} Clone of this delta with added class name.\n   */\n\n\t}, {\n\t\tkey: 'toJSON',\n\t\tvalue: function toJSON() {\n\t\t\tvar json = (0, _clone2.default)(this);\n\n\t\t\tjson.__className = this.constructor.className;\n\n\t\t\t// Remove parent batch to avoid circular dependencies.\n\t\t\tdelete json.batch;\n\n\t\t\treturn json;\n\t\t}\n\n\t\t/**\n   * Delta class name. Used by {@link #toJSON} method for serialization and\n   * {@link module:engine/model/delta/deltafactory~DeltaFactory.fromJSON} during deserialization.\n   *\n   * @type {String}\n   * @readonly\n   */\n\n\t}, {\n\t\tkey: 'baseVersion',\n\t\tget: function get() {\n\t\t\tif (this.operations.length > 0) {\n\t\t\t\treturn this.operations[0].baseVersion;\n\t\t\t}\n\n\t\t\treturn null;\n\t\t}\n\n\t\t/**\n   * @param {Number} baseVersion\n   */\n\t\t,\n\t\tset: function set(baseVersion) {\n\t\t\tvar _iteratorNormalCompletion3 = true;\n\t\t\tvar _didIteratorError3 = false;\n\t\t\tvar _iteratorError3 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator3 = this.operations[Symbol.iterator](), _step3; !(_iteratorNormalCompletion3 = (_step3 = _iterator3.next()).done); _iteratorNormalCompletion3 = true) {\n\t\t\t\t\tvar operation = _step3.value;\n\n\t\t\t\t\toperation.baseVersion = baseVersion++;\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError3 = true;\n\t\t\t\t_iteratorError3 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion3 && _iterator3.return) {\n\t\t\t\t\t\t_iterator3.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError3) {\n\t\t\t\t\t\tthrow _iteratorError3;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * A class that will be used when creating reversed delta.\n   *\n   * @private\n   * @type {Function}\n   */\n\n\t}, {\n\t\tkey: '_reverseDeltaClass',\n\t\tget: function get() {\n\t\t\treturn Delta;\n\t\t}\n\t}], [{\n\t\tkey: 'className',\n\t\tget: function get() {\n\t\t\treturn 'engine.model.delta.Delta';\n\t\t}\n\n\t\t/**\n   * Delta priority. Used in {@link module:engine/model/delta/transform~transform delta transformations}. Delta with the higher\n   * priority will be treated as more important when resolving transformation conflicts. If deltas have same\n   * priority, other factors will be used to determine which delta is more important.\n   *\n   * @private\n   * @type {Number}\n   */\n\n\t}, {\n\t\tkey: '_priority',\n\t\tget: function get() {\n\t\t\treturn 0;\n\t\t}\n\t}]);\n\n\treturn Delta;\n}();\n\nexports.default = Delta;\n\n\n_deltafactory2.default.register(Delta);\n\n/***/ }),\n/* 20 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _slicedToArray = function () { function sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i[\"return\"]) _i[\"return\"](); } finally { if (_d) throw _e; } } return _arr; } return function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return sliceIterator(arr, i); } else { throw new TypeError(\"Invalid attempt to destructure non-iterable instance\"); } }; }();\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _node = __webpack_require__(74);\n\nvar _node2 = _interopRequireDefault(_node);\n\nvar _text = __webpack_require__(29);\n\nvar _text2 = _interopRequireDefault(_text);\n\nvar _objecttomap = __webpack_require__(276);\n\nvar _objecttomap2 = _interopRequireDefault(_objecttomap);\n\nvar _isiterable = __webpack_require__(41);\n\nvar _isiterable2 = _interopRequireDefault(_isiterable);\n\nvar _isPlainObject = __webpack_require__(97);\n\nvar _isPlainObject2 = _interopRequireDefault(_isPlainObject);\n\nvar _matcher = __webpack_require__(117);\n\nvar _matcher2 = _interopRequireDefault(_matcher);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _toConsumableArray(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } else { return Array.from(arr); } }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module engine/view/element\n */\n\n/**\n * View element.\n *\n * Editing engine does not define fixed HTML DTD. This is why the type of the {@link module:engine/view/element~Element} need to\n * be defined by the feature developer. Creating an element you should use {@link module:engine/view/containerelement~ContainerElement}\n * class, {@link module:engine/view/attributeelement~AttributeElement} class or {@link module:engine/view/emptyelement~EmptyElement} class.\n *\n * Note that for view elements which are not created from model, like elements from mutations, paste or\n * {@link module:engine/controller/datacontroller~DataController#set data.set} it is not possible to define the type of the element, so\n * these will be instances of the {@link module:engine/view/element~Element}.\n *\n * @extends module:engine/view/node~Node\n */\nvar Element = function (_Node) {\n\t_inherits(Element, _Node);\n\n\t/**\n  * Creates a view element.\n  *\n  * Attributes can be passed in various formats:\n  *\n  *\t\tnew Element( 'div', { 'class': 'editor', 'contentEditable': 'true' } ); // object\n  *\t\tnew Element( 'div', [ [ 'class', 'editor' ], [ 'contentEditable', 'true' ] ] ); // map-like iterator\n  *\t\tnew Element( 'div', mapOfAttributes ); // map\n  *\n  * @param {String} name Node name.\n  * @param {Object|Iterable} [attrs] Collection of attributes.\n  * @param {module:engine/view/node~Node|Iterable.<module:engine/view/node~Node>} [children]\n  * List of nodes to be inserted into created element.\n  */\n\tfunction Element(name, attrs, children) {\n\t\t_classCallCheck(this, Element);\n\n\t\t/**\n   * Name of the element.\n   *\n   * @readonly\n   * @member {String}\n   */\n\t\tvar _this = _possibleConstructorReturn(this, (Element.__proto__ || Object.getPrototypeOf(Element)).call(this));\n\n\t\t_this.name = name;\n\n\t\t/**\n   * Map of attributes, where attributes names are keys and attributes values are values.\n   *\n   * @protected\n   * @member {Map} #_attrs\n   */\n\t\tif ((0, _isPlainObject2.default)(attrs)) {\n\t\t\t_this._attrs = (0, _objecttomap2.default)(attrs);\n\t\t} else {\n\t\t\t_this._attrs = new Map(attrs);\n\t\t}\n\n\t\t/**\n   * Array of child nodes.\n   *\n   * @protected\n   * @member {Array.<module:engine/view/node~Node>}\n   */\n\t\t_this._children = [];\n\n\t\tif (children) {\n\t\t\t_this.insertChildren(0, children);\n\t\t}\n\n\t\t/**\n   * Set of classes associated with element instance.\n   *\n   * @protected\n   * @member {Set}\n   */\n\t\t_this._classes = new Set();\n\n\t\tif (_this._attrs.has('class')) {\n\t\t\t// Remove class attribute and handle it by class set.\n\t\t\tvar classString = _this._attrs.get('class');\n\t\t\tparseClasses(_this._classes, classString);\n\t\t\t_this._attrs.delete('class');\n\t\t}\n\n\t\t/**\n   * Map of styles.\n   *\n   * @protected\n   * @member {Set} module:engine/view/element~Element#_styles\n   */\n\t\t_this._styles = new Map();\n\n\t\tif (_this._attrs.has('style')) {\n\t\t\t// Remove style attribute and handle it by styles map.\n\t\t\tparseInlineStyles(_this._styles, _this._attrs.get('style'));\n\t\t\t_this._attrs.delete('style');\n\t\t}\n\n\t\t/**\n   * Map of custom properties.\n   * Custom properties can be added to element instance, will be cloned but not rendered into DOM.\n   *\n   * @protected\n   * @memeber {Map}\n   */\n\t\t_this._customProperties = new Map();\n\t\treturn _this;\n\t}\n\n\t/**\n  * Number of element's children.\n  *\n  * @readonly\n  * @type {Number}\n  */\n\n\n\t_createClass(Element, [{\n\t\tkey: 'is',\n\n\n\t\t/**\n   * Checks whether given view tree object is of given type.\n   *\n   * Read more in {@link module:engine/view/node~Node#is}.\n   *\n   * @param {String} type\n   * @param {String} [name] Element name.\n   * @returns {Boolean}\n   */\n\t\tvalue: function is(type) {\n\t\t\tvar name = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n\n\t\t\tif (!name) {\n\t\t\t\treturn type == 'element' || type == this.name;\n\t\t\t} else {\n\t\t\t\treturn type == 'element' && name == this.name;\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Clones provided element.\n   *\n   * @param {Boolean} deep If set to `true` clones element and all its children recursively. When set to `false`,\n   * element will be cloned without any children.\n   * @returns {module:engine/view/element~Element} Clone of this element.\n   */\n\n\t}, {\n\t\tkey: 'clone',\n\t\tvalue: function clone(deep) {\n\t\t\tvar childrenClone = [];\n\n\t\t\tif (deep) {\n\t\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\t\tvar _didIteratorError = false;\n\t\t\t\tvar _iteratorError = undefined;\n\n\t\t\t\ttry {\n\t\t\t\t\tfor (var _iterator = this.getChildren()[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\t\tvar child = _step.value;\n\n\t\t\t\t\t\tchildrenClone.push(child.clone(deep));\n\t\t\t\t\t}\n\t\t\t\t} catch (err) {\n\t\t\t\t\t_didIteratorError = true;\n\t\t\t\t\t_iteratorError = err;\n\t\t\t\t} finally {\n\t\t\t\t\ttry {\n\t\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t\t}\n\t\t\t\t\t} finally {\n\t\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// ContainerElement and AttributeElement should be also cloned properly.\n\t\t\tvar cloned = new this.constructor(this.name, this._attrs, childrenClone);\n\n\t\t\t// Classes and styles are cloned separately - this solution is faster than adding them back to attributes and\n\t\t\t// parse once again in constructor.\n\t\t\tcloned._classes = new Set(this._classes);\n\t\t\tcloned._styles = new Map(this._styles);\n\n\t\t\t// Clone custom properties.\n\t\t\tcloned._customProperties = new Map(this._customProperties);\n\n\t\t\t// Clone filler offset method.\n\t\t\tcloned.getFillerOffset = this.getFillerOffset;\n\n\t\t\treturn cloned;\n\t\t}\n\n\t\t/**\n   * {@link module:engine/view/element~Element#insertChildren Insert} a child node or a list of child nodes at the end of this node and sets\n   * the parent of these nodes to this element.\n   *\n   * @fires module:engine/view/node~Node#change\n   * @param {module:engine/view/node~Node|Iterable.<module:engine/view/node~Node>} nodes Node or the list of nodes to be inserted.\n   * @returns {Number} Number of appended nodes.\n   */\n\n\t}, {\n\t\tkey: 'appendChildren',\n\t\tvalue: function appendChildren(nodes) {\n\t\t\treturn this.insertChildren(this.childCount, nodes);\n\t\t}\n\n\t\t/**\n   * Gets child at the given index.\n   *\n   * @param {Number} index Index of child.\n   * @returns {module:engine/view/node~Node} Child node.\n   */\n\n\t}, {\n\t\tkey: 'getChild',\n\t\tvalue: function getChild(index) {\n\t\t\treturn this._children[index];\n\t\t}\n\n\t\t/**\n   * Gets index of the given child node. Returns `-1` if child node is not found.\n   *\n   * @param {module:engine/view/node~Node} node Child node.\n   * @returns {Number} Index of the child node.\n   */\n\n\t}, {\n\t\tkey: 'getChildIndex',\n\t\tvalue: function getChildIndex(node) {\n\t\t\treturn this._children.indexOf(node);\n\t\t}\n\n\t\t/**\n   * Gets child nodes iterator.\n   *\n   * @returns {Iterable.<module:engine/view/node~Node>} Child nodes iterator.\n   */\n\n\t}, {\n\t\tkey: 'getChildren',\n\t\tvalue: function getChildren() {\n\t\t\treturn this._children[Symbol.iterator]();\n\t\t}\n\n\t\t/**\n   * Returns an iterator that contains the keys for attributes. Order of inserting attributes is not preserved.\n   *\n   * @returns {Iterator.<String>} Keys for attributes.\n   */\n\n\t}, {\n\t\tkey: 'getAttributeKeys',\n\t\tvalue: regeneratorRuntime.mark(function getAttributeKeys() {\n\t\t\tvar _iteratorNormalCompletion2, _didIteratorError2, _iteratorError2, _iterator2, _step2, key;\n\n\t\t\treturn regeneratorRuntime.wrap(function getAttributeKeys$(_context) {\n\t\t\t\twhile (1) {\n\t\t\t\t\tswitch (_context.prev = _context.next) {\n\t\t\t\t\t\tcase 0:\n\t\t\t\t\t\t\tif (!(this._classes.size > 0)) {\n\t\t\t\t\t\t\t\t_context.next = 3;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t_context.next = 3;\n\t\t\t\t\t\t\treturn 'class';\n\n\t\t\t\t\t\tcase 3:\n\t\t\t\t\t\t\tif (!(this._styles.size > 0)) {\n\t\t\t\t\t\t\t\t_context.next = 6;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t_context.next = 6;\n\t\t\t\t\t\t\treturn 'style';\n\n\t\t\t\t\t\tcase 6:\n\n\t\t\t\t\t\t\t// This is not an optimal solution because of https://github.com/ckeditor/ckeditor5-engine/issues/454.\n\t\t\t\t\t\t\t// It can be simplified to `yield* this._attrs.keys();`.\n\t\t\t\t\t\t\t_iteratorNormalCompletion2 = true;\n\t\t\t\t\t\t\t_didIteratorError2 = false;\n\t\t\t\t\t\t\t_iteratorError2 = undefined;\n\t\t\t\t\t\t\t_context.prev = 9;\n\t\t\t\t\t\t\t_iterator2 = this._attrs.keys()[Symbol.iterator]();\n\n\t\t\t\t\t\tcase 11:\n\t\t\t\t\t\t\tif (_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done) {\n\t\t\t\t\t\t\t\t_context.next = 18;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\tkey = _step2.value;\n\t\t\t\t\t\t\t_context.next = 15;\n\t\t\t\t\t\t\treturn key;\n\n\t\t\t\t\t\tcase 15:\n\t\t\t\t\t\t\t_iteratorNormalCompletion2 = true;\n\t\t\t\t\t\t\t_context.next = 11;\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase 18:\n\t\t\t\t\t\t\t_context.next = 24;\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase 20:\n\t\t\t\t\t\t\t_context.prev = 20;\n\t\t\t\t\t\t\t_context.t0 = _context['catch'](9);\n\t\t\t\t\t\t\t_didIteratorError2 = true;\n\t\t\t\t\t\t\t_iteratorError2 = _context.t0;\n\n\t\t\t\t\t\tcase 24:\n\t\t\t\t\t\t\t_context.prev = 24;\n\t\t\t\t\t\t\t_context.prev = 25;\n\n\t\t\t\t\t\t\tif (!_iteratorNormalCompletion2 && _iterator2.return) {\n\t\t\t\t\t\t\t\t_iterator2.return();\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\tcase 27:\n\t\t\t\t\t\t\t_context.prev = 27;\n\n\t\t\t\t\t\t\tif (!_didIteratorError2) {\n\t\t\t\t\t\t\t\t_context.next = 30;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\tthrow _iteratorError2;\n\n\t\t\t\t\t\tcase 30:\n\t\t\t\t\t\t\treturn _context.finish(27);\n\n\t\t\t\t\t\tcase 31:\n\t\t\t\t\t\t\treturn _context.finish(24);\n\n\t\t\t\t\t\tcase 32:\n\t\t\t\t\t\tcase 'end':\n\t\t\t\t\t\t\treturn _context.stop();\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}, getAttributeKeys, this, [[9, 20, 24, 32], [25,, 27, 31]]);\n\t\t})\n\n\t\t/**\n   * Returns iterator that iterates over this element's attributes.\n   *\n   * Attributes are returned as arrays containing two items. First one is attribute key and second is attribute value.\n   * This format is accepted by native `Map` object and also can be passed in `Node` constructor.\n   *\n   * @returns {Iterable.<*>}\n   */\n\n\t}, {\n\t\tkey: 'getAttributes',\n\t\tvalue: regeneratorRuntime.mark(function getAttributes() {\n\t\t\treturn regeneratorRuntime.wrap(function getAttributes$(_context2) {\n\t\t\t\twhile (1) {\n\t\t\t\t\tswitch (_context2.prev = _context2.next) {\n\t\t\t\t\t\tcase 0:\n\t\t\t\t\t\t\treturn _context2.delegateYield(this._attrs.entries(), 't0', 1);\n\n\t\t\t\t\t\tcase 1:\n\t\t\t\t\t\t\tif (!(this._classes.size > 0)) {\n\t\t\t\t\t\t\t\t_context2.next = 4;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t_context2.next = 4;\n\t\t\t\t\t\t\treturn ['class', this.getAttribute('class')];\n\n\t\t\t\t\t\tcase 4:\n\t\t\t\t\t\t\tif (!(this._styles.size > 0)) {\n\t\t\t\t\t\t\t\t_context2.next = 7;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t_context2.next = 7;\n\t\t\t\t\t\t\treturn ['style', this.getAttribute('style')];\n\n\t\t\t\t\t\tcase 7:\n\t\t\t\t\t\tcase 'end':\n\t\t\t\t\t\t\treturn _context2.stop();\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}, getAttributes, this);\n\t\t})\n\n\t\t/**\n   * Gets attribute by key. If attribute is not present - returns undefined.\n   *\n   * @param {String} key Attribute key.\n   * @returns {String|undefined} Attribute value.\n   */\n\n\t}, {\n\t\tkey: 'getAttribute',\n\t\tvalue: function getAttribute(key) {\n\t\t\tif (key == 'class') {\n\t\t\t\tif (this._classes.size > 0) {\n\t\t\t\t\treturn [].concat(_toConsumableArray(this._classes)).join(' ');\n\t\t\t\t}\n\n\t\t\t\treturn undefined;\n\t\t\t}\n\n\t\t\tif (key == 'style') {\n\t\t\t\tif (this._styles.size > 0) {\n\t\t\t\t\tvar styleString = '';\n\n\t\t\t\t\tvar _iteratorNormalCompletion3 = true;\n\t\t\t\t\tvar _didIteratorError3 = false;\n\t\t\t\t\tvar _iteratorError3 = undefined;\n\n\t\t\t\t\ttry {\n\t\t\t\t\t\tfor (var _iterator3 = this._styles[Symbol.iterator](), _step3; !(_iteratorNormalCompletion3 = (_step3 = _iterator3.next()).done); _iteratorNormalCompletion3 = true) {\n\t\t\t\t\t\t\tvar _step3$value = _slicedToArray(_step3.value, 2),\n\t\t\t\t\t\t\t    property = _step3$value[0],\n\t\t\t\t\t\t\t    value = _step3$value[1];\n\n\t\t\t\t\t\t\tstyleString += property + ':' + value + ';';\n\t\t\t\t\t\t}\n\t\t\t\t\t} catch (err) {\n\t\t\t\t\t\t_didIteratorError3 = true;\n\t\t\t\t\t\t_iteratorError3 = err;\n\t\t\t\t\t} finally {\n\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\tif (!_iteratorNormalCompletion3 && _iterator3.return) {\n\t\t\t\t\t\t\t\t_iterator3.return();\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} finally {\n\t\t\t\t\t\t\tif (_didIteratorError3) {\n\t\t\t\t\t\t\t\tthrow _iteratorError3;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t\treturn styleString;\n\t\t\t\t}\n\n\t\t\t\treturn undefined;\n\t\t\t}\n\n\t\t\treturn this._attrs.get(key);\n\t\t}\n\n\t\t/**\n   * Returns a boolean indicating whether an attribute with the specified key exists in the element.\n   *\n   * @param {String} key Attribute key.\n   * @returns {Boolean} `true` if attribute with the specified key exists in the element, false otherwise.\n   */\n\n\t}, {\n\t\tkey: 'hasAttribute',\n\t\tvalue: function hasAttribute(key) {\n\t\t\tif (key == 'class') {\n\t\t\t\treturn this._classes.size > 0;\n\t\t\t}\n\n\t\t\tif (key == 'style') {\n\t\t\t\treturn this._styles.size > 0;\n\t\t\t}\n\n\t\t\treturn this._attrs.has(key);\n\t\t}\n\n\t\t/**\n   * Adds or overwrite attribute with a specified key and value.\n   *\n   * @param {String} key Attribute key.\n   * @param {String} value Attribute value.\n   * @fires module:engine/view/node~Node#change\n   */\n\n\t}, {\n\t\tkey: 'setAttribute',\n\t\tvalue: function setAttribute(key, value) {\n\t\t\tthis._fireChange('attributes', this);\n\n\t\t\tif (key == 'class') {\n\t\t\t\tparseClasses(this._classes, value);\n\t\t\t} else if (key == 'style') {\n\t\t\t\tparseInlineStyles(this._styles, value);\n\t\t\t} else {\n\t\t\t\tthis._attrs.set(key, value);\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Inserts a child node or a list of child nodes on the given index and sets the parent of these nodes to\n   * this element.\n   *\n   * @param {Number} index Position where nodes should be inserted.\n   * @param {module:engine/view/node~Node|Iterable.<module:engine/view/node~Node>} nodes Node or the list of nodes to be inserted.\n   * @fires module:engine/view/node~Node#change\n   * @returns {Number} Number of inserted nodes.\n   */\n\n\t}, {\n\t\tkey: 'insertChildren',\n\t\tvalue: function insertChildren(index, nodes) {\n\t\t\tthis._fireChange('children', this);\n\t\t\tvar count = 0;\n\n\t\t\tnodes = normalize(nodes);\n\n\t\t\tvar _iteratorNormalCompletion4 = true;\n\t\t\tvar _didIteratorError4 = false;\n\t\t\tvar _iteratorError4 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator4 = nodes[Symbol.iterator](), _step4; !(_iteratorNormalCompletion4 = (_step4 = _iterator4.next()).done); _iteratorNormalCompletion4 = true) {\n\t\t\t\t\tvar node = _step4.value;\n\n\t\t\t\t\tnode.parent = this;\n\n\t\t\t\t\tthis._children.splice(index, 0, node);\n\t\t\t\t\tindex++;\n\t\t\t\t\tcount++;\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError4 = true;\n\t\t\t\t_iteratorError4 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion4 && _iterator4.return) {\n\t\t\t\t\t\t_iterator4.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError4) {\n\t\t\t\t\t\tthrow _iteratorError4;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn count;\n\t\t}\n\n\t\t/**\n   * Removes attribute from the element.\n   *\n   * @param {String} key Attribute key.\n   * @returns {Boolean} Returns true if an attribute existed and has been removed.\n   * @fires module:engine/view/node~Node#change\n   */\n\n\t}, {\n\t\tkey: 'removeAttribute',\n\t\tvalue: function removeAttribute(key) {\n\t\t\tthis._fireChange('attributes', this);\n\n\t\t\t// Remove class attribute.\n\t\t\tif (key == 'class') {\n\t\t\t\tif (this._classes.size > 0) {\n\t\t\t\t\tthis._classes.clear();\n\n\t\t\t\t\treturn true;\n\t\t\t\t}\n\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\t// Remove style attribute.\n\t\t\tif (key == 'style') {\n\t\t\t\tif (this._styles.size > 0) {\n\t\t\t\t\tthis._styles.clear();\n\n\t\t\t\t\treturn true;\n\t\t\t\t}\n\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\t// Remove other attributes.\n\t\t\treturn this._attrs.delete(key);\n\t\t}\n\n\t\t/**\n   * Removes number of child nodes starting at the given index and set the parent of these nodes to `null`.\n   *\n   * @param {Number} index Number of the first node to remove.\n   * @param {Number} [howMany=1] Number of nodes to remove.\n   * @returns {Array.<module:engine/view/node~Node>} The array of removed nodes.\n   * @fires module:engine/view/node~Node#change\n   */\n\n\t}, {\n\t\tkey: 'removeChildren',\n\t\tvalue: function removeChildren(index) {\n\t\t\tvar howMany = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 1;\n\n\t\t\tthis._fireChange('children', this);\n\n\t\t\tfor (var i = index; i < index + howMany; i++) {\n\t\t\t\tthis._children[i].parent = null;\n\t\t\t}\n\n\t\t\treturn this._children.splice(index, howMany);\n\t\t}\n\n\t\t/**\n   * Checks if this element is similar to other element.\n   * Both elements should have the same name and attributes to be considered as similar. Two similar elements\n   * can contain different set of children nodes.\n   *\n   * @param {module:engine/view/element~Element} otherElement\n   * @returns {Boolean}\n   */\n\n\t}, {\n\t\tkey: 'isSimilar',\n\t\tvalue: function isSimilar(otherElement) {\n\t\t\tif (!(otherElement instanceof Element)) {\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\t// If exactly the same Element is provided - return true immediately.\n\t\t\tif (this === otherElement) {\n\t\t\t\treturn true;\n\t\t\t}\n\n\t\t\t// Check element name.\n\t\t\tif (this.name != otherElement.name) {\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\t// Check number of attributes, classes and styles.\n\t\t\tif (this._attrs.size !== otherElement._attrs.size || this._classes.size !== otherElement._classes.size || this._styles.size !== otherElement._styles.size) {\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\t// Check if attributes are the same.\n\t\t\tvar _iteratorNormalCompletion5 = true;\n\t\t\tvar _didIteratorError5 = false;\n\t\t\tvar _iteratorError5 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator5 = this._attrs[Symbol.iterator](), _step5; !(_iteratorNormalCompletion5 = (_step5 = _iterator5.next()).done); _iteratorNormalCompletion5 = true) {\n\t\t\t\t\tvar _step5$value = _slicedToArray(_step5.value, 2),\n\t\t\t\t\t    key = _step5$value[0],\n\t\t\t\t\t    value = _step5$value[1];\n\n\t\t\t\t\tif (!otherElement._attrs.has(key) || otherElement._attrs.get(key) !== value) {\n\t\t\t\t\t\treturn false;\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\t// Check if classes are the same.\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError5 = true;\n\t\t\t\t_iteratorError5 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion5 && _iterator5.return) {\n\t\t\t\t\t\t_iterator5.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError5) {\n\t\t\t\t\t\tthrow _iteratorError5;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tvar _iteratorNormalCompletion6 = true;\n\t\t\tvar _didIteratorError6 = false;\n\t\t\tvar _iteratorError6 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator6 = this._classes[Symbol.iterator](), _step6; !(_iteratorNormalCompletion6 = (_step6 = _iterator6.next()).done); _iteratorNormalCompletion6 = true) {\n\t\t\t\t\tvar className = _step6.value;\n\n\t\t\t\t\tif (!otherElement._classes.has(className)) {\n\t\t\t\t\t\treturn false;\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\t// Check if styles are the same.\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError6 = true;\n\t\t\t\t_iteratorError6 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion6 && _iterator6.return) {\n\t\t\t\t\t\t_iterator6.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError6) {\n\t\t\t\t\t\tthrow _iteratorError6;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tvar _iteratorNormalCompletion7 = true;\n\t\t\tvar _didIteratorError7 = false;\n\t\t\tvar _iteratorError7 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator7 = this._styles[Symbol.iterator](), _step7; !(_iteratorNormalCompletion7 = (_step7 = _iterator7.next()).done); _iteratorNormalCompletion7 = true) {\n\t\t\t\t\tvar _step7$value = _slicedToArray(_step7.value, 2),\n\t\t\t\t\t    property = _step7$value[0],\n\t\t\t\t\t    value = _step7$value[1];\n\n\t\t\t\t\tif (!otherElement._styles.has(property) || otherElement._styles.get(property) !== value) {\n\t\t\t\t\t\treturn false;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError7 = true;\n\t\t\t\t_iteratorError7 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion7 && _iterator7.return) {\n\t\t\t\t\t\t_iterator7.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError7) {\n\t\t\t\t\t\tthrow _iteratorError7;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn true;\n\t\t}\n\n\t\t/**\n   * Adds specified class.\n   *\n   *\t\telement.addClass( 'foo' ); // Adds 'foo' class.\n   *\t\telement.addClass( 'foo', 'bar' ); // Adds 'foo' and 'bar' classes.\n   *\n   * @param {...String} className\n   * @fires module:engine/view/node~Node#change\n   */\n\n\t}, {\n\t\tkey: 'addClass',\n\t\tvalue: function addClass() {\n\t\t\tvar _this2 = this;\n\n\t\t\tthis._fireChange('attributes', this);\n\n\t\t\tfor (var _len = arguments.length, className = Array(_len), _key = 0; _key < _len; _key++) {\n\t\t\t\tclassName[_key] = arguments[_key];\n\t\t\t}\n\n\t\t\tclassName.forEach(function (name) {\n\t\t\t\treturn _this2._classes.add(name);\n\t\t\t});\n\t\t}\n\n\t\t/**\n   * Removes specified class.\n   *\n  \t *\t\telement.removeClass( 'foo' );  // Removes 'foo' class.\n   *\t\telement.removeClass( 'foo', 'bar' ); // Removes both 'foo' and 'bar' classes.\n   *\n   * @param {...String} className\n   * @fires module:engine/view/node~Node#change\n   */\n\n\t}, {\n\t\tkey: 'removeClass',\n\t\tvalue: function removeClass() {\n\t\t\tvar _this3 = this;\n\n\t\t\tthis._fireChange('attributes', this);\n\n\t\t\tfor (var _len2 = arguments.length, className = Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {\n\t\t\t\tclassName[_key2] = arguments[_key2];\n\t\t\t}\n\n\t\t\tclassName.forEach(function (name) {\n\t\t\t\treturn _this3._classes.delete(name);\n\t\t\t});\n\t\t}\n\n\t\t/**\n   * Returns true if class is present.\n   * If more then one class is provided - returns true only when all classes are present.\n   *\n   *\t\telement.hasClass( 'foo' ); // Returns true if 'foo' class is present.\n   *\t\telement.hasClass( 'foo', 'bar' ); // Returns true if 'foo' and 'bar' classes are both present.\n   *\n   * @param {...String} className\n   */\n\n\t}, {\n\t\tkey: 'hasClass',\n\t\tvalue: function hasClass() {\n\t\t\tfor (var _len3 = arguments.length, className = Array(_len3), _key3 = 0; _key3 < _len3; _key3++) {\n\t\t\t\tclassName[_key3] = arguments[_key3];\n\t\t\t}\n\n\t\t\tvar _iteratorNormalCompletion8 = true;\n\t\t\tvar _didIteratorError8 = false;\n\t\t\tvar _iteratorError8 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator8 = className[Symbol.iterator](), _step8; !(_iteratorNormalCompletion8 = (_step8 = _iterator8.next()).done); _iteratorNormalCompletion8 = true) {\n\t\t\t\t\tvar name = _step8.value;\n\n\t\t\t\t\tif (!this._classes.has(name)) {\n\t\t\t\t\t\treturn false;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError8 = true;\n\t\t\t\t_iteratorError8 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion8 && _iterator8.return) {\n\t\t\t\t\t\t_iterator8.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError8) {\n\t\t\t\t\t\tthrow _iteratorError8;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn true;\n\t\t}\n\n\t\t/**\n   * Returns iterator that contains all class names.\n   *\n   * @returns {Iterator.<String>}\n   */\n\n\t}, {\n\t\tkey: 'getClassNames',\n\t\tvalue: function getClassNames() {\n\t\t\treturn this._classes.keys();\n\t\t}\n\n\t\t/**\n   * Adds style to the element.\n   *\n   *\t\telement.setStyle( 'color', 'red' );\n   *\t\telement.setStyle( {\n   *\t\t\tcolor: 'red',\n   *\t\t\tposition: 'fixed'\n   *\t\t} );\n   *\n   * @param {String|Object} property Property name or object with key - value pairs.\n   * @param {String} [value] Value to set. This parameter is ignored if object is provided as the first parameter.\n   * @fires module:engine/view/node~Node#change\n   */\n\n\t}, {\n\t\tkey: 'setStyle',\n\t\tvalue: function setStyle(property, value) {\n\t\t\tthis._fireChange('attributes', this);\n\n\t\t\tif ((0, _isPlainObject2.default)(property)) {\n\t\t\t\tvar keys = Object.keys(property);\n\n\t\t\t\tvar _iteratorNormalCompletion9 = true;\n\t\t\t\tvar _didIteratorError9 = false;\n\t\t\t\tvar _iteratorError9 = undefined;\n\n\t\t\t\ttry {\n\t\t\t\t\tfor (var _iterator9 = keys[Symbol.iterator](), _step9; !(_iteratorNormalCompletion9 = (_step9 = _iterator9.next()).done); _iteratorNormalCompletion9 = true) {\n\t\t\t\t\t\tvar key = _step9.value;\n\n\t\t\t\t\t\tthis._styles.set(key, property[key]);\n\t\t\t\t\t}\n\t\t\t\t} catch (err) {\n\t\t\t\t\t_didIteratorError9 = true;\n\t\t\t\t\t_iteratorError9 = err;\n\t\t\t\t} finally {\n\t\t\t\t\ttry {\n\t\t\t\t\t\tif (!_iteratorNormalCompletion9 && _iterator9.return) {\n\t\t\t\t\t\t\t_iterator9.return();\n\t\t\t\t\t\t}\n\t\t\t\t\t} finally {\n\t\t\t\t\t\tif (_didIteratorError9) {\n\t\t\t\t\t\t\tthrow _iteratorError9;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\tthis._styles.set(property, value);\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Returns style value for given property.\n   * Undefined is returned if style does not exist.\n   *\n   * @param {String} property\n   * @returns {String|undefined}\n   */\n\n\t}, {\n\t\tkey: 'getStyle',\n\t\tvalue: function getStyle(property) {\n\t\t\treturn this._styles.get(property);\n\t\t}\n\n\t\t/**\n   * Returns iterator that contains all style names.\n   *\n   * @returns {Iterator.<String>}\n   */\n\n\t}, {\n\t\tkey: 'getStyleNames',\n\t\tvalue: function getStyleNames() {\n\t\t\treturn this._styles.keys();\n\t\t}\n\n\t\t/**\n   * Returns true if style keys are present.\n   * If more then one style property is provided - returns true only when all properties are present.\n   *\n   *\t\telement.hasStyle( 'color' ); // Returns true if 'border-top' style is present.\n   *\t\telement.hasStyle( 'color', 'border-top' ); // Returns true if 'color' and 'border-top' styles are both present.\n   *\n   * @param {...String} property\n   */\n\n\t}, {\n\t\tkey: 'hasStyle',\n\t\tvalue: function hasStyle() {\n\t\t\tfor (var _len4 = arguments.length, property = Array(_len4), _key4 = 0; _key4 < _len4; _key4++) {\n\t\t\t\tproperty[_key4] = arguments[_key4];\n\t\t\t}\n\n\t\t\tvar _iteratorNormalCompletion10 = true;\n\t\t\tvar _didIteratorError10 = false;\n\t\t\tvar _iteratorError10 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator10 = property[Symbol.iterator](), _step10; !(_iteratorNormalCompletion10 = (_step10 = _iterator10.next()).done); _iteratorNormalCompletion10 = true) {\n\t\t\t\t\tvar name = _step10.value;\n\n\t\t\t\t\tif (!this._styles.has(name)) {\n\t\t\t\t\t\treturn false;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError10 = true;\n\t\t\t\t_iteratorError10 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion10 && _iterator10.return) {\n\t\t\t\t\t\t_iterator10.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError10) {\n\t\t\t\t\t\tthrow _iteratorError10;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn true;\n\t\t}\n\n\t\t/**\n   * Removes specified style.\n   *\n   *\t\telement.removeStyle( 'color' );  // Removes 'color' style.\n   *\t\telement.removeStyle( 'color', 'border-top' ); // Removes both 'color' and 'border-top' styles.\n   *\n   * @param {...String} property\n   * @fires module:engine/view/node~Node#change\n   */\n\n\t}, {\n\t\tkey: 'removeStyle',\n\t\tvalue: function removeStyle() {\n\t\t\tvar _this4 = this;\n\n\t\t\tthis._fireChange('attributes', this);\n\n\t\t\tfor (var _len5 = arguments.length, property = Array(_len5), _key5 = 0; _key5 < _len5; _key5++) {\n\t\t\t\tproperty[_key5] = arguments[_key5];\n\t\t\t}\n\n\t\t\tproperty.forEach(function (name) {\n\t\t\t\treturn _this4._styles.delete(name);\n\t\t\t});\n\t\t}\n\n\t\t/**\n   * Returns ancestor element that match specified pattern.\n   * Provided patterns should be compatible with {@link module:engine/view/matcher~Matcher Matcher} as it is used internally.\n   *\n   * @see module:engine/view/matcher~Matcher\n   * @param {Object|String|RegExp|Function} patterns Patterns used to match correct ancestor.\n   * See {@link module:engine/view/matcher~Matcher}.\n   * @returns {module:engine/view/element~Element|null} Found element or `null` if no matching ancestor was found.\n   */\n\n\t}, {\n\t\tkey: 'findAncestor',\n\t\tvalue: function findAncestor() {\n\t\t\tfor (var _len6 = arguments.length, patterns = Array(_len6), _key6 = 0; _key6 < _len6; _key6++) {\n\t\t\t\tpatterns[_key6] = arguments[_key6];\n\t\t\t}\n\n\t\t\tvar matcher = new (Function.prototype.bind.apply(_matcher2.default, [null].concat(patterns)))();\n\t\t\tvar parent = this.parent;\n\n\t\t\twhile (parent) {\n\t\t\t\tif (matcher.match(parent)) {\n\t\t\t\t\treturn parent;\n\t\t\t\t}\n\n\t\t\t\tparent = parent.parent;\n\t\t\t}\n\n\t\t\treturn null;\n\t\t}\n\n\t\t/**\n   * Sets a custom property. Unlike attributes, custom properties are not rendered to the DOM,\n   * so they can be used to add special data to elements.\n   *\n   * @param {String|Symbol} key\n   * @param {*} value\n   */\n\n\t}, {\n\t\tkey: 'setCustomProperty',\n\t\tvalue: function setCustomProperty(key, value) {\n\t\t\tthis._customProperties.set(key, value);\n\t\t}\n\n\t\t/**\n   * Returns the custom property value for the given key.\n   *\n   * @param {String|Symbol} key\n   * @returns {*}\n   */\n\n\t}, {\n\t\tkey: 'getCustomProperty',\n\t\tvalue: function getCustomProperty(key) {\n\t\t\treturn this._customProperties.get(key);\n\t\t}\n\n\t\t/**\n   * Removes the custom property stored under the given key.\n   *\n   * @param {String|Symbol} key\n   * @returns {Boolean} Returns true if property was removed.\n   */\n\n\t}, {\n\t\tkey: 'removeCustomProperty',\n\t\tvalue: function removeCustomProperty(key) {\n\t\t\treturn this._customProperties.delete(key);\n\t\t}\n\n\t\t/**\n   * Returns an iterator which iterates over this element's custom properties.\n   * Iterator provides [key, value] pair for each stored property.\n   *\n   * @returns {Iterable.<*>}\n   */\n\n\t}, {\n\t\tkey: 'getCustomProperties',\n\t\tvalue: regeneratorRuntime.mark(function getCustomProperties() {\n\t\t\treturn regeneratorRuntime.wrap(function getCustomProperties$(_context3) {\n\t\t\t\twhile (1) {\n\t\t\t\t\tswitch (_context3.prev = _context3.next) {\n\t\t\t\t\t\tcase 0:\n\t\t\t\t\t\t\treturn _context3.delegateYield(this._customProperties.entries(), 't0', 1);\n\n\t\t\t\t\t\tcase 1:\n\t\t\t\t\t\tcase 'end':\n\t\t\t\t\t\t\treturn _context3.stop();\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}, getCustomProperties, this);\n\t\t})\n\n\t\t/**\n   * Returns block {@link module:engine/view/filler filler} offset or `null` if block filler is not needed.\n   *\n   * @abstract\n   * @method module:engine/view/element~Element#getFillerOffset\n   */\n\n\t}, {\n\t\tkey: 'childCount',\n\t\tget: function get() {\n\t\t\treturn this._children.length;\n\t\t}\n\n\t\t/**\n   * Is `true` if there are no nodes inside this element, `false` otherwise.\n   *\n   * @readonly\n   * @type {Boolean}\n   */\n\n\t}, {\n\t\tkey: 'isEmpty',\n\t\tget: function get() {\n\t\t\treturn this._children.length === 0;\n\t\t}\n\t}]);\n\n\treturn Element;\n}(_node2.default);\n\n// Parses inline styles and puts property - value pairs into styles map.\n// Styles map is cleared before insertion.\n//\n// @param {Map.<String, String>} stylesMap Map to insert parsed properties and values.\n// @param {String} stylesString Styles to parse.\n\n\nexports.default = Element;\nfunction parseInlineStyles(stylesMap, stylesString) {\n\tvar regex = /\\s*([^:;\\s]+)\\s*:\\s*([^;]+)\\s*(?=;|$)/g;\n\tvar matchStyle = void 0;\n\tstylesMap.clear();\n\n\twhile ((matchStyle = regex.exec(stylesString)) !== null) {\n\t\tstylesMap.set(matchStyle[1], matchStyle[2].trim());\n\t}\n}\n\n// Parses class attribute and puts all classes into classes set.\n// Classes set s cleared before insertion.\n//\n// @param {Set.<String>} classesSet Set to insert parsed classes.\n// @param {String} classesString String with classes to parse.\nfunction parseClasses(classesSet, classesString) {\n\tvar classArray = classesString.split(/\\s+/);\n\tclassesSet.clear();\n\tclassArray.forEach(function (name) {\n\t\treturn classesSet.add(name);\n\t});\n}\n\n// Converts strings to Text and non-iterables to arrays.\n//\n// @param {String|module:engine/view/node~Node|Iterable.<String|module:engine/view/node~Node>}\n// @return {Iterable.<module:engine/view/node~Node>}\nfunction normalize(nodes) {\n\t// Separate condition because string is iterable.\n\tif (typeof nodes == 'string') {\n\t\treturn [new _text2.default(nodes)];\n\t}\n\n\tif (!(0, _isiterable2.default)(nodes)) {\n\t\tnodes = [nodes];\n\t}\n\n\t// Array.from to enable .map() on non-arrays.\n\treturn Array.from(nodes).map(function (node) {\n\t\treturn typeof node == 'string' ? new _text2.default(node) : node;\n\t});\n}\n\n/***/ }),\n/* 21 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.keyCodes = undefined;\nexports.getCode = getCode;\nexports.parseKeystroke = parseKeystroke;\nexports.getEnvKeystrokeText = getEnvKeystrokeText;\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nvar _env = __webpack_require__(400);\n\nvar _env2 = _interopRequireDefault(_env);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Object with `keyName => keyCode` pairs for a set of known keys.\n *\n * Contains:\n *\n * * `a-z`,\n * * `0-9`,\n * * `f1-f12`,\n * * `arrow(left|up|right|bottom)`,\n * * `backspace`, `delete`, `enter`, `esc`, `tab`,\n * * `ctrl`, `cmd`, `shift`, `alt`.\n */\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * Set of utils related to keyboard support.\n *\n * @module utils/keyboard\n */\n\nvar keyCodes = exports.keyCodes = generateKnownKeyCodes();\n\n/**\n * Converts a key name or a {@link module:utils/keyboard~KeystrokeInfo keystroke info} into a key code.\n *\n * Note: Key names are matched with {@link module:utils/keyboard~keyCodes} in a case-insensitive way.\n *\n * @param {String|module:utils/keyboard~KeystrokeInfo} Key name (see {@link module:utils/keyboard~keyCodes})\n * or a keystroke data object.\n * @returns {Number} Key or keystroke code.\n */\nfunction getCode(key) {\n  var keyCode = void 0;\n\n  if (typeof key == 'string') {\n    keyCode = keyCodes[key.toLowerCase()];\n\n    if (!keyCode) {\n      /**\n       * Unknown key name. Only key names contained by the {@link module:utils/keyboard~keyCodes} can be used.\n       *\n       * @errror keyboard-unknown-key\n       * @param {String} key\n       */\n      throw new _ckeditorerror2.default('keyboard-unknown-key: Unknown key name.', { key: key });\n    }\n  } else {\n    keyCode = key.keyCode + (key.altKey ? keyCodes.alt : 0) + (key.ctrlKey ? keyCodes.ctrl : 0) + (key.shiftKey ? keyCodes.shift : 0);\n  }\n\n  return keyCode;\n}\n\n/**\n * Parses keystroke and returns a keystroke code that will match the code returned by\n * link {@link module:utils/keyboard.getCode} for a corresponding {@link module:utils/keyboard~KeystrokeInfo keystroke info}.\n *\n * The keystroke can be passed in two formats:\n *\n * * as a single string – e.g. `ctrl + A`,\n * * as an array of {@link module:utils/keyboard~keyCodes known key names} and key codes – e.g.:\n *   * `[ 'ctrl', 32 ]` (ctrl + space),\n *   * `[ 'ctrl', 'a' ]` (ctrl + A).\n *\n * Note: Key names are matched with {@link module:utils/keyboard~keyCodes} in a case-insensitive way.\n *\n * Note: Only keystrokes with a single non-modifier key are supported (e.g. `ctrl+A` is OK, but `ctrl+A+B` is not).\n *\n * @param {String|Array.<Number|String>} keystroke Keystroke definition.\n * @returns {Number} Keystroke code.\n */\nfunction parseKeystroke(keystroke) {\n  if (typeof keystroke == 'string') {\n    keystroke = splitKeystrokeText(keystroke);\n  }\n\n  return keystroke.map(function (key) {\n    return typeof key == 'string' ? getCode(key) : key;\n  }).reduce(function (key, sum) {\n    return sum + key;\n  }, 0);\n}\n\n/**\n * It translates any keystroke string text like `\"CTRL+A\"` to an\n * environment–specific keystroke, i.e. `\"⌘A\"` on Mac OSX.\n *\n * @param {String} keystroke Keystroke text.\n * @returns {String} Keystroke text specific for the environment.\n */\nfunction getEnvKeystrokeText(keystroke) {\n  var split = splitKeystrokeText(keystroke);\n\n  if (_env2.default.mac) {\n    if (split[0].toLowerCase() == 'ctrl') {\n      return '⌘' + (split[1] || '');\n    }\n  }\n\n  return keystroke;\n}\n\nfunction generateKnownKeyCodes() {\n  var keyCodes = {\n    arrowleft: 37,\n    arrowup: 38,\n    arrowright: 39,\n    arrowdown: 40,\n    backspace: 8,\n    delete: 46,\n    enter: 13,\n    esc: 27,\n    tab: 9,\n\n    // The idea about these numbers is that they do not collide with any real key codes, so we can use them\n    // like bit masks.\n    ctrl: 0x110000,\n    // Has the same code as ctrl, because their behaviour should be unified across the editor.\n    // See http://ckeditor.github.io/editor-recommendations/general-policies#ctrl-vs-cmd\n    cmd: 0x110000,\n    shift: 0x220000,\n    alt: 0x440000\n  };\n\n  // a-z\n  for (var code = 65; code <= 90; code++) {\n    var letter = String.fromCharCode(code);\n\n    keyCodes[letter.toLowerCase()] = code;\n  }\n\n  // 0-9\n  for (var _code = 48; _code <= 57; _code++) {\n    keyCodes[_code - 48] = _code;\n  }\n\n  // F1-F12\n  for (var _code2 = 112; _code2 <= 123; _code2++) {\n    keyCodes['f' + (_code2 - 111)] = _code2;\n  }\n\n  return keyCodes;\n}\n\nfunction splitKeystrokeText(keystroke) {\n  return keystroke.split(/\\s*\\+\\s*/);\n}\n\n/**\n * Information about a keystroke.\n *\n * @interface module:utils/keyboard~KeystrokeInfo\n */\n\n/**\n * The [key code](https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/keyCode).\n *\n * @member {Number} module:utils/keyboard~KeystrokeInfo#keyCode\n */\n\n/**\n * Whether the <kbd>Alt</kbd> modifier was pressed.\n *\n * @member {Bolean} module:utils/keyboard~KeystrokeInfo#altKey\n */\n\n/**\n * Whether the <kbd>Ctrl</kbd> or <kbd>Cmd</kbd> modifier was pressed.\n *\n * @member {Bolean} module:utils/keyboard~KeystrokeInfo#ctrlKey\n */\n\n/**\n * Whether the <kbd>Shift</kbd> modifier was pressed.\n *\n * @member {Bolean} module:utils/keyboard~KeystrokeInfo#shiftKey\n */\n\n/***/ }),\n/* 22 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _arrayPush = __webpack_require__(83);\n\nvar _arrayPush2 = _interopRequireDefault(_arrayPush);\n\nvar _isFlattenable = __webpack_require__(457);\n\nvar _isFlattenable2 = _interopRequireDefault(_isFlattenable);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * The base implementation of `_.flatten` with support for restricting flattening.\n *\n * @private\n * @param {Array} array The array to flatten.\n * @param {number} depth The maximum recursion depth.\n * @param {boolean} [predicate=isFlattenable] The function invoked per iteration.\n * @param {boolean} [isStrict] Restrict to values that pass `predicate` checks.\n * @param {Array} [result=[]] The initial result value.\n * @returns {Array} Returns the new flattened array.\n */\nfunction baseFlatten(array, depth, predicate, isStrict, result) {\n  var index = -1,\n      length = array.length;\n\n  predicate || (predicate = _isFlattenable2.default);\n  result || (result = []);\n\n  while (++index < length) {\n    var value = array[index];\n    if (depth > 0 && predicate(value)) {\n      if (depth > 1) {\n        // Recursively flatten arrays (susceptible to call stack limits).\n        baseFlatten(value, depth - 1, predicate, isStrict, result);\n      } else {\n        (0, _arrayPush2.default)(result, value);\n      }\n    } else if (!isStrict) {\n      result[result.length] = value;\n    }\n  }\n  return result;\n}\n\nexports.default = baseFlatten;\n\n/***/ }),\n/* 23 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if (\"value\" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };\n\nvar _node = __webpack_require__(68);\n\nvar _node2 = _interopRequireDefault(_node);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module engine/model/text\n */\n\n/**\n * Model text node. Type of {@link module:engine/model/node~Node node} that contains {@link module:engine/model/text~Text#data text data}.\n *\n * **Important:** see {@link module:engine/model/node~Node} to read about restrictions using `Text` and `Node` API.\n *\n * **Note:** keep in mind that `Text` instances might indirectly got removed from model tree when model is changed.\n * This happens when {@link module:engine/model/writer~writer model writer} is used to change model and the text node is merged with\n * another text node. Then, both text nodes are removed and a new text node is inserted into the model. Because of\n * this behavior, keeping references to `Text` is not recommended. Instead, consider creating\n * {@link module:engine/model/liveposition~LivePosition live position} placed before the text node.\n */\nvar Text = function (_Node) {\n\t_inherits(Text, _Node);\n\n\t/**\n  * Creates a text node.\n  *\n  * @param {String} data Node's text.\n  * @param {Object} [attrs] Node's attributes. See {@link module:utils/tomap~toMap} for a list of accepted values.\n  */\n\tfunction Text(data, attrs) {\n\t\t_classCallCheck(this, Text);\n\n\t\t/**\n   * Text data contained in this text node.\n   *\n   * @type {String}\n   */\n\t\tvar _this = _possibleConstructorReturn(this, (Text.__proto__ || Object.getPrototypeOf(Text)).call(this, attrs));\n\n\t\t_this.data = data || '';\n\t\treturn _this;\n\t}\n\n\t/**\n  * @inheritDoc\n  */\n\n\n\t_createClass(Text, [{\n\t\tkey: 'is',\n\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tvalue: function is(type) {\n\t\t\treturn type == 'text';\n\t\t}\n\n\t\t/**\n   * Creates a copy of this text node and returns it. Created text node has same text data and attributes as original text node.\n   */\n\n\t}, {\n\t\tkey: 'clone',\n\t\tvalue: function clone() {\n\t\t\treturn new Text(this.data, this.getAttributes());\n\t\t}\n\n\t\t/**\n   * Converts `Text` instance to plain object and returns it.\n   *\n   * @returns {Object} `Text` instance converted to plain object.\n   */\n\n\t}, {\n\t\tkey: 'toJSON',\n\t\tvalue: function toJSON() {\n\t\t\tvar json = _get(Text.prototype.__proto__ || Object.getPrototypeOf(Text.prototype), 'toJSON', this).call(this);\n\n\t\t\tjson.data = this.data;\n\n\t\t\treturn json;\n\t\t}\n\n\t\t/**\n   * Creates a `Text` instance from given plain object (i.e. parsed JSON string).\n   *\n   * @param {Object} json Plain object to be converted to `Text`.\n   * @returns {module:engine/model/text~Text} `Text` instance created using given plain object.\n   */\n\n\t}, {\n\t\tkey: 'offsetSize',\n\t\tget: function get() {\n\t\t\treturn this.data.length;\n\t\t}\n\t}], [{\n\t\tkey: 'fromJSON',\n\t\tvalue: function fromJSON(json) {\n\t\t\treturn new Text(json.data, json.attributes);\n\t\t}\n\t}]);\n\n\treturn Text;\n}(_node2.default);\n\nexports.default = Text;\n\n/***/ }),\n/* 24 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module engine/view/position\n */\n\nvar _treewalker = __webpack_require__(76);\n\nvar _treewalker2 = _interopRequireDefault(_treewalker);\n\nvar _comparearrays = __webpack_require__(48);\n\nvar _comparearrays2 = _interopRequireDefault(_comparearrays);\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nvar _editableelement = __webpack_require__(73);\n\nvar _editableelement2 = _interopRequireDefault(_editableelement);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * Position in the tree. Position is always located before or after a node.\n */\nvar Position = function () {\n\t/**\n  * Creates a position.\n  *\n  * @param {module:engine/view/node~Node|module:engine/view/documentfragment~DocumentFragment} parent Position parent.\n  * @param {Number} offset Position offset.\n  */\n\tfunction Position(parent, offset) {\n\t\t_classCallCheck(this, Position);\n\n\t\t/**\n   * Position parent.\n   *\n   * @member {module:engine/view/node~Node|module:engine/view/documentfragment~DocumentFragment}\n   * module:engine/view/position~Position#parent\n   */\n\t\tthis.parent = parent;\n\n\t\t/**\n   * Position offset.\n   *\n   * @member {Number} module:engine/view/position~Position#offset\n   */\n\t\tthis.offset = offset;\n\t}\n\n\t/**\n  * Node directly after the position. Equals `null` when there is no node after position or position is located\n  * inside text node.\n  *\n  * @readonly\n  * @type {module:engine/view/node~Node|null}\n  */\n\n\n\t_createClass(Position, [{\n\t\tkey: 'getShiftedBy',\n\n\n\t\t/**\n   * Returns a new instance of Position with offset incremented by `shift` value.\n   *\n   * @param {Number} shift How position offset should get changed. Accepts negative values.\n   * @returns {module:engine/view/position~Position} Shifted position.\n   */\n\t\tvalue: function getShiftedBy(shift) {\n\t\t\tvar shifted = Position.createFromPosition(this);\n\n\t\t\tvar offset = shifted.offset + shift;\n\t\t\tshifted.offset = offset < 0 ? 0 : offset;\n\n\t\t\treturn shifted;\n\t\t}\n\n\t\t/**\n   * Gets the farthest position which matches the callback using\n   * {@link module:engine/view/treewalker~TreeWalker TreeWalker}.\n   *\n   * For example:\n   *\n   * \t\tgetLastMatchingPosition( value => value.type == 'text' ); // <p>{}foo</p> -> <p>foo[]</p>\n   * \t\tgetLastMatchingPosition( value => value.type == 'text', { direction: 'backward' } ); // <p>foo[]</p> -> <p>{}foo</p>\n   * \t\tgetLastMatchingPosition( value => false ); // Do not move the position.\n   *\n   * @param {Function} skip Callback function. Gets {@link module:engine/view/treewalker~TreeWalkerValue} and should\n   * return `true` if the value should be skipped or `false` if not.\n   * @param {Object} options Object with configuration options. See {@link module:engine/view/treewalker~TreeWalker}.\n   *\n   * @returns {module:engine/view/position~Position} The position after the last item which matches the `skip` callback test.\n   */\n\n\t}, {\n\t\tkey: 'getLastMatchingPosition',\n\t\tvalue: function getLastMatchingPosition(skip) {\n\t\t\tvar options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n\n\t\t\toptions.startPosition = this;\n\n\t\t\tvar treeWalker = new _treewalker2.default(options);\n\t\t\ttreeWalker.skip(skip);\n\n\t\t\treturn treeWalker.position;\n\t\t}\n\n\t\t/**\n   * Returns ancestors array of this position, that is this position's parent and it's ancestors.\n   *\n   * @returns {Array} Array with ancestors.\n   */\n\n\t}, {\n\t\tkey: 'getAncestors',\n\t\tvalue: function getAncestors() {\n\t\t\tif (this.parent.is('documentFragment')) {\n\t\t\t\treturn [this.parent];\n\t\t\t} else {\n\t\t\t\treturn this.parent.getAncestors({ includeNode: true });\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Checks whether this position equals given position.\n   *\n   * @param {module:engine/view/position~Position} otherPosition Position to compare with.\n   * @returns {Boolean} True if positions are same.\n   */\n\n\t}, {\n\t\tkey: 'isEqual',\n\t\tvalue: function isEqual(otherPosition) {\n\t\t\treturn this.parent == otherPosition.parent && this.offset == otherPosition.offset;\n\t\t}\n\n\t\t/**\n   * Checks whether this position is located before given position. When method returns `false` it does not mean that\n   * this position is after give one. Two positions may be located inside separate roots and in that situation this\n   * method will still return `false`.\n   *\n   * @see module:engine/view/position~Position#isAfter\n   * @see module:engine/view/position~Position#compareWith\n   * @param {module:engine/view/position~Position} otherPosition Position to compare with.\n   * @returns {Boolean} Returns `true` if this position is before given position.\n   */\n\n\t}, {\n\t\tkey: 'isBefore',\n\t\tvalue: function isBefore(otherPosition) {\n\t\t\treturn this.compareWith(otherPosition) == 'before';\n\t\t}\n\n\t\t/**\n   * Checks whether this position is located after given position. When method returns `false` it does not mean that\n   * this position is before give one. Two positions may be located inside separate roots and in that situation this\n   * method will still return `false`.\n   *\n   * @see module:engine/view/position~Position#isBefore\n   * @see module:engine/view/position~Position#compareWith\n   * @param {module:engine/view/position~Position} otherPosition Position to compare with.\n   * @returns {Boolean} Returns `true` if this position is after given position.\n   */\n\n\t}, {\n\t\tkey: 'isAfter',\n\t\tvalue: function isAfter(otherPosition) {\n\t\t\treturn this.compareWith(otherPosition) == 'after';\n\t\t}\n\n\t\t/**\n   * Checks whether this position is before, after or in same position that other position. Two positions may be also\n   * different when they are located in separate roots.\n   *\n   * @param {module:engine/view/position~Position} otherPosition Position to compare with.\n   * @returns {module:engine/view/position~PositionRelation}\n   */\n\n\t}, {\n\t\tkey: 'compareWith',\n\t\tvalue: function compareWith(otherPosition) {\n\t\t\tif (this.isEqual(otherPosition)) {\n\t\t\t\treturn 'same';\n\t\t\t}\n\n\t\t\t// If positions have same parent.\n\t\t\tif (this.parent === otherPosition.parent) {\n\t\t\t\treturn this.offset - otherPosition.offset < 0 ? 'before' : 'after';\n\t\t\t}\n\n\t\t\t// Get path from root to position's parent element.\n\t\t\tvar path = this.getAncestors();\n\t\t\tvar otherPath = otherPosition.getAncestors();\n\n\t\t\t// Compare both path arrays to find common ancestor.\n\t\t\tvar result = (0, _comparearrays2.default)(path, otherPath);\n\n\t\t\tvar commonAncestorIndex = void 0;\n\n\t\t\tswitch (result) {\n\t\t\t\tcase 0:\n\t\t\t\t\t// No common ancestors found.\n\t\t\t\t\treturn 'different';\n\n\t\t\t\tcase 'prefix':\n\t\t\t\t\tcommonAncestorIndex = path.length - 1;\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase 'extension':\n\t\t\t\t\tcommonAncestorIndex = otherPath.length - 1;\n\t\t\t\t\tbreak;\n\n\t\t\t\tdefault:\n\t\t\t\t\tcommonAncestorIndex = result - 1;\n\t\t\t}\n\n\t\t\t// Common ancestor of two positions.\n\t\t\tvar commonAncestor = path[commonAncestorIndex];\n\t\t\tvar nextAncestor1 = path[commonAncestorIndex + 1];\n\t\t\tvar nextAncestor2 = otherPath[commonAncestorIndex + 1];\n\n\t\t\t// Check if common ancestor is not one of the parents.\n\t\t\tif (commonAncestor === this.parent) {\n\t\t\t\tvar _index = this.offset - nextAncestor2.index;\n\n\t\t\t\treturn _index <= 0 ? 'before' : 'after';\n\t\t\t} else if (commonAncestor === otherPosition.parent) {\n\t\t\t\tvar _index2 = nextAncestor1.index - otherPosition.offset;\n\n\t\t\t\treturn _index2 < 0 ? 'before' : 'after';\n\t\t\t}\n\n\t\t\tvar index = nextAncestor1.index - nextAncestor2.index;\n\n\t\t\t// Compare indexes of next ancestors inside common one.\n\t\t\treturn index < 0 ? 'before' : 'after';\n\t\t}\n\n\t\t/**\n   * Creates position at the given location. The location can be specified as:\n   *\n   * * a {@link module:engine/view/position~Position position},\n   * * parent element and offset (offset defaults to `0`),\n   * * parent element and `'end'` (sets position at the end of that element),\n   * * {@link module:engine/view/item~Item view item} and `'before'` or `'after'` (sets position before or after given view item).\n   *\n   * This method is a shortcut to other constructors such as:\n   *\n   * * {@link module:engine/view/position~Position.createBefore},\n   * * {@link module:engine/view/position~Position.createAfter},\n   * * {@link module:engine/view/position~Position.createFromPosition}.\n   *\n   * @param {module:engine/view/item~Item|module:engine/model/position~Position} itemOrPosition\n   * @param {Number|'end'|'before'|'after'} [offset=0] Offset or one of the flags. Used only when\n   * first parameter is a {@link module:engine/view/item~Item view item}.\n   */\n\n\t}, {\n\t\tkey: 'nodeAfter',\n\t\tget: function get() {\n\t\t\tif (this.parent.is('text')) {\n\t\t\t\treturn null;\n\t\t\t}\n\n\t\t\treturn this.parent.getChild(this.offset) || null;\n\t\t}\n\n\t\t/**\n   * Node directly before the position. Equals `null` when there is no node before position or position is located\n   * inside text node.\n   *\n   * @readonly\n   * @type {module:engine/view/node~Node|null}\n   */\n\n\t}, {\n\t\tkey: 'nodeBefore',\n\t\tget: function get() {\n\t\t\tif (this.parent.is('text')) {\n\t\t\t\treturn null;\n\t\t\t}\n\n\t\t\treturn this.parent.getChild(this.offset - 1) || null;\n\t\t}\n\n\t\t/**\n   * Is `true` if position is at the beginning of its {@link module:engine/view/position~Position#parent parent}, `false` otherwise.\n   *\n   * @readonly\n   * @type {Boolean}\n   */\n\n\t}, {\n\t\tkey: 'isAtStart',\n\t\tget: function get() {\n\t\t\treturn this.offset === 0;\n\t\t}\n\n\t\t/**\n   * Is `true` if position is at the end of its {@link module:engine/view/position~Position#parent parent}, `false` otherwise.\n   *\n   * @readonly\n   * @type {Boolean}\n   */\n\n\t}, {\n\t\tkey: 'isAtEnd',\n\t\tget: function get() {\n\t\t\tvar endOffset = this.parent.is('text') ? this.parent.data.length : this.parent.childCount;\n\n\t\t\treturn this.offset === endOffset;\n\t\t}\n\n\t\t/**\n   * Position's root, that is the root of the position's parent element.\n   *\n   * @readonly\n   * @type {module:engine/view/node~Node|module:engine/view/documentfragment~DocumentFragment}\n   */\n\n\t}, {\n\t\tkey: 'root',\n\t\tget: function get() {\n\t\t\treturn this.parent.root;\n\t\t}\n\n\t\t/**\n   * {@link module:engine/view/editableelement~EditableElement EditableElement} instance that contains this position, or `null` if\n   * position is not inside an editable element.\n   *\n   * @type {module:engine/view/editableelement~EditableElement|null}\n   */\n\n\t}, {\n\t\tkey: 'editableElement',\n\t\tget: function get() {\n\t\t\tvar editable = this.parent;\n\n\t\t\twhile (!(editable instanceof _editableelement2.default)) {\n\t\t\t\tif (editable.parent) {\n\t\t\t\t\teditable = editable.parent;\n\t\t\t\t} else {\n\t\t\t\t\treturn null;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn editable;\n\t\t}\n\t}], [{\n\t\tkey: 'createAt',\n\t\tvalue: function createAt(itemOrPosition, offset) {\n\t\t\tif (itemOrPosition instanceof Position) {\n\t\t\t\treturn this.createFromPosition(itemOrPosition);\n\t\t\t} else {\n\t\t\t\tvar node = itemOrPosition;\n\n\t\t\t\tif (offset == 'end') {\n\t\t\t\t\toffset = node.is('text') ? node.data.length : node.childCount;\n\t\t\t\t} else if (offset == 'before') {\n\t\t\t\t\treturn this.createBefore(node);\n\t\t\t\t} else if (offset == 'after') {\n\t\t\t\t\treturn this.createAfter(node);\n\t\t\t\t} else if (!offset) {\n\t\t\t\t\toffset = 0;\n\t\t\t\t}\n\n\t\t\t\treturn new Position(node, offset);\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Creates a new position after given view item.\n   *\n   * @param {module:engine/view/item~Item} item View item after which the position should be located.\n   * @returns {module:engine/view/position~Position}\n   */\n\n\t}, {\n\t\tkey: 'createAfter',\n\t\tvalue: function createAfter(item) {\n\t\t\t// TextProxy is not a instance of Node so we need do handle it in specific way.\n\t\t\tif (item.is('textProxy')) {\n\t\t\t\treturn new Position(item.textNode, item.offsetInText + item.data.length);\n\t\t\t}\n\n\t\t\tif (!item.parent) {\n\t\t\t\t/**\n     * You can not make a position after a root.\n     *\n     * @error position-after-root\n     * @param {module:engine/view/node~Node} root\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('view-position-after-root: You can not make position after root.', { root: item });\n\t\t\t}\n\n\t\t\treturn new Position(item.parent, item.index + 1);\n\t\t}\n\n\t\t/**\n   * Creates a new position before given view item.\n   *\n   * @param {module:engine/view/item~Item} item View item before which the position should be located.\n   * @returns {module:engine/view/position~Position}\n   */\n\n\t}, {\n\t\tkey: 'createBefore',\n\t\tvalue: function createBefore(item) {\n\t\t\t// TextProxy is not a instance of Node so we need do handle it in specific way.\n\t\t\tif (item.is('textProxy')) {\n\t\t\t\treturn new Position(item.textNode, item.offsetInText);\n\t\t\t}\n\n\t\t\tif (!item.parent) {\n\t\t\t\t/**\n     * You cannot make a position before a root.\n     *\n     * @error position-before-root\n     * @param {module:engine/view/node~Node} root\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('view-position-before-root: You can not make position before root.', { root: item });\n\t\t\t}\n\n\t\t\treturn new Position(item.parent, item.index);\n\t\t}\n\n\t\t/**\n   * Creates and returns a new instance of `Position`, which is equal to the passed position.\n   *\n   * @param {module:engine/view/position~Position} position Position to be cloned.\n   * @returns {module:engine/view/position~Position}\n   */\n\n\t}, {\n\t\tkey: 'createFromPosition',\n\t\tvalue: function createFromPosition(position) {\n\t\t\treturn new this(position.parent, position.offset);\n\t\t}\n\t}]);\n\n\treturn Position;\n}();\n\n/**\n * A flag indicating whether this position is `'before'` or `'after'` or `'same'` as given position.\n * If positions are in different roots `'different'` flag is returned.\n *\n * @typedef {String} module:engine/view/position~PositionRelation\n */\n\n\nexports.default = Position;\n\n/***/ }),\n/* 25 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if (\"value\" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };\n\nvar _view = __webpack_require__(7);\n\nvar _view2 = _interopRequireDefault(_view);\n\nvar _template = __webpack_require__(6);\n\nvar _template2 = _interopRequireDefault(_template);\n\nvar _iconview = __webpack_require__(376);\n\nvar _iconview2 = _interopRequireDefault(_iconview);\n\nvar _keyboard = __webpack_require__(21);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module ui/button/buttonview\n */\n\n/**\n * The button view class.\n *\n * @extends module:ui/view~View\n */\nvar ButtonView = function (_View) {\n\t_inherits(ButtonView, _View);\n\n\t/**\n  * @inheritDoc\n  */\n\tfunction ButtonView(locale) {\n\t\t_classCallCheck(this, ButtonView);\n\n\t\t/**\n   * The label of the button view visible to the user.\n   *\n   * @observable\n   * @member {String} #label\n   */\n\t\tvar _this = _possibleConstructorReturn(this, (ButtonView.__proto__ || Object.getPrototypeOf(ButtonView)).call(this, locale));\n\n\t\t_this.set('label');\n\n\t\t/**\n   * (Optional) The keystroke associated with the button, i.e. <kbd>CTRL+B</kbd>,\n   * in the string format compatible with {@link module:utils/keyboard}.\n   *\n   * @observable\n   * @member {Boolean} #keystroke\n   */\n\t\t_this.set('keystroke');\n\n\t\t/**\n   * (Optional) Tooltip of the button, i.e. displayed when hovering the button with the mouse cursor.\n   *\n   * * If defined as a `Boolean` (e.g. `true`), then combination of `label` and `keystroke` will be set as a tooltip.\n   * * If defined as a `String`, tooltip will equal the exact text of that `String`.\n   * * If defined as a `Function`, `label` and `keystroke` will be passed to that function, which is to return\n   * a string with the tooltip text.\n   *\n   *\t\tconst view = new ButtonView( locale );\n   *\t\tview.tooltip = ( label, keystroke ) => `A tooltip for ${ label } and ${ keystroke }.`\n   *\n   * @observable\n   * @default false\n   * @member {Boolean|String|Function} #tooltip\n   */\n\t\t_this.set('tooltip');\n\n\t\t/**\n   * The HTML type of the button. Default `button`.\n   *\n   * @observable\n   * @member {'button'|'submit'|'reset'|'menu'} #type\n   */\n\t\t_this.set('type', 'button');\n\n\t\t/**\n   * Controls whether the button view is \"on\", e.g. some feature which it represents\n   * is currently enabled.\n   *\n   * @observable\n   * @member {Boolean} #isOn\n   */\n\t\t_this.set('isOn', false);\n\n\t\t/**\n   * Controls whether the button view is enabled (can be clicked).\n   *\n   * @observable\n   * @member {Boolean} #isEnabled\n   */\n\t\t_this.set('isEnabled', true);\n\n\t\t/**\n   * (Optional) Whether the label of the button is hidden (e.g. button with icon only).\n   *\n   * @observable\n   * @member {Boolean} #withText\n   */\n\t\t_this.set('withText', false);\n\n\t\t/**\n   * (Optional) Source of the icon. See {@link module:ui/icon/iconview~IconView#content}.\n   *\n   * @observable\n   * @member {String} #icon\n   */\n\t\t_this.set('icon');\n\n\t\t/**\n   * Controls the `tabindex` attribute of the button.\n   *\n   * @observable\n   * @default -1\n   * @member {String} #tabindex\n   */\n\t\t_this.set('tabindex', -1);\n\n\t\t/**\n   * Tooltip of the button bound to the template.\n   *\n   * @see #tooltip\n   * @see #_getTooltipString\n   * @private\n   * @observable\n   * @member {Boolean} #_tooltipString\n   */\n\t\t_this.bind('_tooltipString').to(_this, 'tooltip', _this, 'label', _this, 'keystroke', _this._getTooltipString.bind(_this));\n\n\t\t/**\n   * Icon of the button view.\n   *\n   * @readonly\n   * @member {module:ui/icon/iconview~IconView} #iconView\n   */\n\n\t\tvar bind = _this.bindTemplate;\n\n\t\t_this.template = new _template2.default({\n\t\t\ttag: 'button',\n\n\t\t\tattributes: {\n\t\t\t\tclass: ['ck-button', bind.if('_tooltipString', 'ck-tooltip_s'), bind.to('isEnabled', function (value) {\n\t\t\t\t\treturn value ? 'ck-enabled' : 'ck-disabled';\n\t\t\t\t}), bind.to('isOn', function (value) {\n\t\t\t\t\treturn value ? 'ck-on' : 'ck-off';\n\t\t\t\t}), bind.if('withText', 'ck-button_with-text')],\n\t\t\t\ttype: bind.to('type', function (value) {\n\t\t\t\t\treturn value ? value : 'button';\n\t\t\t\t}),\n\t\t\t\t'data-ck-tooltip': [bind.to('_tooltipString')],\n\t\t\t\ttabindex: bind.to('tabindex')\n\t\t\t},\n\n\t\t\tchildren: [{\n\t\t\t\ttag: 'span',\n\n\t\t\t\tattributes: {\n\t\t\t\t\tclass: ['ck-button__label']\n\t\t\t\t},\n\n\t\t\t\tchildren: [{\n\t\t\t\t\ttext: bind.to('label')\n\t\t\t\t}]\n\t\t\t}],\n\n\t\t\ton: {\n\t\t\t\tmousedown: bind.to(function (evt) {\n\t\t\t\t\tevt.preventDefault();\n\t\t\t\t}),\n\n\t\t\t\tclick: bind.to(function (evt) {\n\t\t\t\t\t// We can't make the button disabled using the disabled attribute, because it won't be focusable.\n\t\t\t\t\t// Though, shouldn't this condition be moved to the button controller?\n\t\t\t\t\tif (_this.isEnabled) {\n\t\t\t\t\t\t_this.fire('execute');\n\t\t\t\t\t} else {\n\t\t\t\t\t\t// Prevent the default when button is disabled, to block e.g.\n\t\t\t\t\t\t// automatic form submitting. See ckeditor/ckeditor5-link#74.\n\t\t\t\t\t\tevt.preventDefault();\n\t\t\t\t\t}\n\t\t\t\t})\n\t\t\t}\n\t\t});\n\n\t\t/**\n   * Fired when the button view is clicked. It won't be fired when the button is disabled.\n   *\n   * @event #execute\n   */\n\t\treturn _this;\n\t}\n\n\t/**\n  * @inheritDoc\n  */\n\n\n\t_createClass(ButtonView, [{\n\t\tkey: 'init',\n\t\tvalue: function init() {\n\t\t\tvar _this2 = this;\n\n\t\t\tvar promise = Promise.resolve();\n\n\t\t\tif (this.icon && !this.iconView) {\n\t\t\t\t(function () {\n\t\t\t\t\tvar iconView = _this2.iconView = new _iconview2.default();\n\n\t\t\t\t\ticonView.bind('content').to(_this2, 'icon');\n\n\t\t\t\t\t_this2.element.insertBefore(iconView.element, _this2.element.firstChild);\n\n\t\t\t\t\t// Make sure the icon view will be destroyed along with button.\n\t\t\t\t\tpromise = promise.then(function () {\n\t\t\t\t\t\treturn _this2.addChildren(iconView);\n\t\t\t\t\t});\n\t\t\t\t})();\n\t\t\t}\n\n\t\t\treturn promise.then(function () {\n\t\t\t\treturn _get(ButtonView.prototype.__proto__ || Object.getPrototypeOf(ButtonView.prototype), 'init', _this2).call(_this2);\n\t\t\t});\n\t\t}\n\n\t\t/**\n   * Focuses the button.\n   */\n\n\t}, {\n\t\tkey: 'focus',\n\t\tvalue: function focus() {\n\t\t\tthis.element.focus();\n\t\t}\n\n\t\t/**\n   * Gets value for the `data-ck-tooltip` attribute from the combination of\n   * {@link #tooltip}, {@link #label} and {@link #keystroke} attributes.\n   *\n   * @private\n   * @see #tooltip\n   * @see #_tooltipString\n   * @param {Boolean|String|Function} tooltip Button tooltip.\n   * @param {String} label Button label.\n   * @param {String} keystroke Button keystroke.\n   * @returns {String}\n   */\n\n\t}, {\n\t\tkey: '_getTooltipString',\n\t\tvalue: function _getTooltipString(tooltip, label, keystroke) {\n\t\t\tif (tooltip) {\n\t\t\t\tif (typeof tooltip == 'string') {\n\t\t\t\t\treturn tooltip;\n\t\t\t\t} else {\n\t\t\t\t\tif (keystroke) {\n\t\t\t\t\t\tkeystroke = (0, _keyboard.getEnvKeystrokeText)(keystroke);\n\t\t\t\t\t}\n\n\t\t\t\t\tif (tooltip instanceof Function) {\n\t\t\t\t\t\treturn tooltip(label, keystroke);\n\t\t\t\t\t} else if (tooltip === true) {\n\t\t\t\t\t\treturn '' + label + (keystroke ? ' (' + keystroke + ')' : '');\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn false;\n\t\t}\n\t}]);\n\n\treturn ButtonView;\n}(_view2.default);\n\nexports.default = ButtonView;\n\n/***/ }),\n/* 26 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * A specialized version of `_.map` for arrays without support for iteratee\n * shorthands.\n *\n * @private\n * @param {Array} array The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array} Returns the new mapped array.\n */\nfunction arrayMap(array, iteratee) {\n  var index = -1,\n      length = array.length,\n      result = Array(length);\n\n  while (++index < length) {\n    result[index] = iteratee(array[index], index, array);\n  }\n  return result;\n}\n\nexports.default = arrayMap;\n\n/***/ }),\n/* 27 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _operation = __webpack_require__(32);\n\nvar _operation2 = _interopRequireDefault(_operation);\n\nvar _position = __webpack_require__(1);\n\nvar _position2 = _interopRequireDefault(_position);\n\nvar _range = __webpack_require__(3);\n\nvar _range2 = _interopRequireDefault(_range);\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nvar _comparearrays = __webpack_require__(48);\n\nvar _comparearrays2 = _interopRequireDefault(_comparearrays);\n\nvar _writer = __webpack_require__(28);\n\nvar _writer2 = _interopRequireDefault(_writer);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module engine/model/operation/moveoperation\n */\n\n/**\n * Operation to move a range of {@link module:engine/model/item~Item model items}\n * to given {@link module:engine/model/position~Position target position}.\n */\nvar MoveOperation = function (_Operation) {\n\t_inherits(MoveOperation, _Operation);\n\n\t/**\n  * Creates a move operation.\n  *\n  * @param {module:engine/model/position~Position} sourcePosition\n  * Position before the first {@link module:engine/model/item~Item model item} to move.\n  * @param {Number} howMany Offset size of moved range. Moved range will start from `sourcePosition` and end at\n  * `sourcePosition` with offset shifted by `howMany`.\n  * @param {module:engine/model/position~Position} targetPosition Position at which moved nodes will be inserted.\n  * @param {Number} baseVersion {@link module:engine/model/document~Document#version} on which operation can be applied.\n  */\n\tfunction MoveOperation(sourcePosition, howMany, targetPosition, baseVersion) {\n\t\t_classCallCheck(this, MoveOperation);\n\n\t\t/**\n   * Position before the first {@link module:engine/model/item~Item model item} to move.\n   *\n   * @member {module:engine/model/position~Position} module:engine/model/operation/moveoperation~MoveOperation#sourcePosition\n   */\n\t\tvar _this = _possibleConstructorReturn(this, (MoveOperation.__proto__ || Object.getPrototypeOf(MoveOperation)).call(this, baseVersion));\n\n\t\t_this.sourcePosition = _position2.default.createFromPosition(sourcePosition);\n\n\t\t/**\n   * Offset size of moved range.\n   *\n   * @member {Number} module:engine/model/operation/moveoperation~MoveOperation#howMany\n   */\n\t\t_this.howMany = howMany;\n\n\t\t/**\n   * Position at which moved nodes will be inserted.\n   *\n   * @member {module:engine/model/position~Position} module:engine/model/operation/moveoperation~MoveOperation#targetPosition\n   */\n\t\t_this.targetPosition = _position2.default.createFromPosition(targetPosition);\n\n\t\t/**\n   * Defines whether `MoveOperation` is sticky. If `MoveOperation` is sticky, during\n   * {@link module:engine/model/operation/transform~transform operational transformation} if there will be an operation that\n   * inserts some nodes at the position equal to the boundary of this `MoveOperation`, that operation will\n   * get their insertion path updated to the position where this `MoveOperation` moves the range.\n   *\n   * @member {Boolean} module:engine/model/operation/moveoperation~MoveOperation#isSticky\n   */\n\t\t_this.isSticky = false;\n\t\treturn _this;\n\t}\n\n\t/**\n  * @inheritDoc\n  */\n\n\n\t_createClass(MoveOperation, [{\n\t\tkey: 'clone',\n\n\n\t\t/**\n   * @inheritDoc\n   * @returns {module:engine/model/operation/moveoperation~MoveOperation}\n   */\n\t\tvalue: function clone() {\n\t\t\tvar op = new this.constructor(this.sourcePosition, this.howMany, this.targetPosition, this.baseVersion);\n\t\t\top.isSticky = this.isSticky;\n\n\t\t\treturn op;\n\t\t}\n\n\t\t/**\n   * Returns the start position of the moved range after it got moved. This may be different than\n   * {@link module:engine/model/operation/moveoperation~MoveOperation#targetPosition} in some cases, i.e. when a range is moved\n   * inside the same parent but {@link module:engine/model/operation/moveoperation~MoveOperation#targetPosition targetPosition}\n   * is after {@link module:engine/model/operation/moveoperation~MoveOperation#sourcePosition sourcePosition}.\n   *\n   *\t\t vv              vv\n   *\t\tabcdefg ===> adefbcg\n   *\t\t     ^          ^\n   *\t\t     targetPos\tmovedRangeStart\n   *\t\t     offset 6\toffset 4\n   *\n   * @returns {module:engine/model/position~Position}\n   */\n\n\t}, {\n\t\tkey: 'getMovedRangeStart',\n\t\tvalue: function getMovedRangeStart() {\n\t\t\treturn this.targetPosition._getTransformedByDeletion(this.sourcePosition, this.howMany);\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   * @returns {module:engine/model/operation/moveoperation~MoveOperation}\n   */\n\n\t}, {\n\t\tkey: 'getReversed',\n\t\tvalue: function getReversed() {\n\t\t\tvar newTargetPosition = this.sourcePosition._getTransformedByInsertion(this.targetPosition, this.howMany);\n\n\t\t\tvar op = new this.constructor(this.getMovedRangeStart(), this.howMany, newTargetPosition, this.baseVersion + 1);\n\t\t\top.isSticky = this.isSticky;\n\n\t\t\treturn op;\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: '_execute',\n\t\tvalue: function _execute() {\n\t\t\tvar sourceElement = this.sourcePosition.parent;\n\t\t\tvar targetElement = this.targetPosition.parent;\n\t\t\tvar sourceOffset = this.sourcePosition.offset;\n\t\t\tvar targetOffset = this.targetPosition.offset;\n\n\t\t\t// Validate whether move operation has correct parameters.\n\t\t\t// Validation is pretty complex but move operation is one of the core ways to manipulate the document state.\n\t\t\t// We expect that many errors might be connected with one of scenarios described below.\n\t\t\tif (!sourceElement || !targetElement) {\n\t\t\t\t/**\n     * Source position or target position is invalid.\n     *\n     * @error move-operation-position-invalid\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('move-operation-position-invalid: Source position or target position is invalid.');\n\t\t\t} else if (sourceOffset + this.howMany > sourceElement.maxOffset) {\n\t\t\t\t/**\n     * The nodes which should be moved do not exist.\n     *\n     * @error move-operation-nodes-do-not-exist\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('move-operation-nodes-do-not-exist: The nodes which should be moved do not exist.');\n\t\t\t} else if (sourceElement === targetElement && sourceOffset < targetOffset && targetOffset < sourceOffset + this.howMany) {\n\t\t\t\t/**\n     * Trying to move a range of nodes into the middle of that range.\n     *\n     * @error move-operation-range-into-itself\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('move-operation-range-into-itself: Trying to move a range of nodes to the inside of that range.');\n\t\t\t} else if (this.sourcePosition.root == this.targetPosition.root) {\n\t\t\t\tif ((0, _comparearrays2.default)(this.sourcePosition.getParentPath(), this.targetPosition.getParentPath()) == 'prefix') {\n\t\t\t\t\tvar i = this.sourcePosition.path.length - 1;\n\n\t\t\t\t\tif (this.targetPosition.path[i] >= sourceOffset && this.targetPosition.path[i] < sourceOffset + this.howMany) {\n\t\t\t\t\t\t/**\n       * Trying to move a range of nodes into one of nodes from that range.\n       *\n       * @error move-operation-node-into-itself\n       */\n\t\t\t\t\t\tthrow new _ckeditorerror2.default('move-operation-node-into-itself: Trying to move a range of nodes into one of nodes from that range.');\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tvar range = _writer2.default.move(_range2.default.createFromPositionAndShift(this.sourcePosition, this.howMany), this.targetPosition);\n\n\t\t\treturn {\n\t\t\t\tsourcePosition: this.sourcePosition,\n\t\t\t\trange: range\n\t\t\t};\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: 'type',\n\t\tget: function get() {\n\t\t\treturn 'move';\n\t\t}\n\t}], [{\n\t\tkey: 'fromJSON',\n\n\n\t\t/**\n   * Creates `MoveOperation` object from deserilized object, i.e. from parsed JSON string.\n   *\n   * @param {Object} json Deserialized JSON object.\n   * @param {module:engine/model/document~Document} document Document on which this operation will be applied.\n   * @returns {module:engine/model/operation/moveoperation~MoveOperation}\n   */\n\t\tvalue: function fromJSON(json, document) {\n\t\t\tvar sourcePosition = _position2.default.fromJSON(json.sourcePosition, document);\n\t\t\tvar targetPosition = _position2.default.fromJSON(json.targetPosition, document);\n\n\t\t\tvar move = new this(sourcePosition, json.howMany, targetPosition, json.baseVersion);\n\n\t\t\tif (json.isSticky) {\n\t\t\t\tmove.isSticky = true;\n\t\t\t}\n\n\t\t\treturn move;\n\t\t}\n\t}, {\n\t\tkey: 'className',\n\t\tget: function get() {\n\t\t\treturn 'engine.model.operation.MoveOperation';\n\t\t}\n\t}]);\n\n\treturn MoveOperation;\n}(_operation2.default);\n\nexports.default = MoveOperation;\n\n/***/ }),\n/* 28 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\nexports.insert = insert;\nexports.remove = remove;\nexports.move = move;\nexports.setAttribute = setAttribute;\nexports.removeAttribute = removeAttribute;\nexports.normalizeNodes = normalizeNodes;\n\nvar _node = __webpack_require__(68);\n\nvar _node2 = _interopRequireDefault(_node);\n\nvar _text = __webpack_require__(23);\n\nvar _text2 = _interopRequireDefault(_text);\n\nvar _textproxy = __webpack_require__(56);\n\nvar _textproxy2 = _interopRequireDefault(_textproxy);\n\nvar _range = __webpack_require__(3);\n\nvar _range2 = _interopRequireDefault(_range);\n\nvar _documentfragment = __webpack_require__(67);\n\nvar _documentfragment2 = _interopRequireDefault(_documentfragment);\n\nvar _nodelist = __webpack_require__(69);\n\nvar _nodelist2 = _interopRequireDefault(_nodelist);\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Contains functions used for composing model tree, grouped together under \"model writer\" name. Those functions\n * are built on top of {@link module:engine/model/node~Node node}, and it's child classes', APIs.\n *\n * Model writer API has multiple advantages and it is highly recommended to use it when changing model tree and nodes:\n * * model writer API {@link module:engine/model/writer~writer.normalizeNodes normalizes inserted nodes}, which means that you can insert\n * not only {@link module:engine/model/node~Node nodes}, but also `String`s, {@link module:engine/model/textproxy~TextProxy text proxies}\n * and\n * {@link module:engine/model/documentfragment~DocumentFragment document fragments},\n * * model writer API operates on {@link module:engine/model/position~Position positions}, which means that you have\n * better control over manipulating model tree as positions operate on offsets rather than indexes,\n * * model writer API automatically merges {@link module:engine/model/text~Text text nodes} with same attributes, which means\n * lower memory usage and better efficiency.\n *\n * @namespace writer\n */\nvar writer = {\n\tinsert: insert,\n\tremove: remove,\n\tmove: move,\n\tsetAttribute: setAttribute,\n\tremoveAttribute: removeAttribute,\n\tnormalizeNodes: normalizeNodes\n}; /**\n    * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n    * For licensing, see LICENSE.md.\n    */\n\n/**\n * @module engine/model/writer\n */\n\nexports.default = writer;\n\n/**\n * Inserts given nodes at given position.\n *\n * @function module:engine/model/writer~writer.insert\n * @param {module:engine/model/position~Position} position Position at which nodes should be inserted.\n * @param {module:engine/model/node~NodeSet} nodes Nodes to insert.\n * @returns {module:engine/model/range~Range} Range spanning over inserted elements.\n */\n\nfunction insert(position, nodes) {\n\tnodes = normalizeNodes(nodes);\n\n\t// We have to count offset before inserting nodes because they can get merged and we would get wrong offsets.\n\tvar offset = nodes.reduce(function (sum, node) {\n\t\treturn sum + node.offsetSize;\n\t}, 0);\n\tvar parent = position.parent;\n\n\t// Insertion might be in a text node, we should split it if that's the case.\n\t_splitNodeAtPosition(position);\n\tvar index = position.index;\n\n\t// Insert nodes at given index. After splitting we have a proper index and insertion is between nodes,\n\t// using basic `Element` API.\n\tparent.insertChildren(index, nodes);\n\n\t// Merge text nodes, if possible. Merging is needed only at points where inserted nodes \"touch\" \"old\" nodes.\n\t_mergeNodesAtIndex(parent, index + nodes.length);\n\t_mergeNodesAtIndex(parent, index);\n\n\treturn new _range2.default(position, position.getShiftedBy(offset));\n}\n\n/**\n * Removed nodes in given range. Only {@link module:engine/model/range~Range#isFlat flat} ranges are accepted.\n *\n * @function module:engine/model/writer~writer.remove\n * @param {module:engine/model/range~Range} range Range containing nodes to remove.\n * @returns {Array.<module:engine/model/node~Node>}\n */\nfunction remove(range) {\n\tif (!range.isFlat) {\n\t\t/**\n   * Trying to remove a range that starts and ends in different element.\n   *\n   * @error model-writer-remove-range-not-flat\n   */\n\t\tthrow new _ckeditorerror2.default('model-writer-remove-range-not-flat: ' + 'Trying to remove a range that starts and ends in different element.');\n\t}\n\n\tvar parent = range.start.parent;\n\n\t// Range may be inside text nodes, we have to split them if that's the case.\n\t_splitNodeAtPosition(range.start);\n\t_splitNodeAtPosition(range.end);\n\n\t// Remove the text nodes using basic `Element` API.\n\tvar removed = parent.removeChildren(range.start.index, range.end.index - range.start.index);\n\n\t// Merge text nodes, if possible. After some nodes were removed, node before and after removed range will be\n\t// touching at the position equal to the removed range beginning. We check merging possibility there.\n\t_mergeNodesAtIndex(parent, range.start.index);\n\n\treturn removed;\n}\n\n/**\n * Moves nodes in given range to given target position. Only {@link module:engine/model/range~Range#isFlat flat} ranges are accepted.\n *\n * @param {module:engine/model/range~Range} sourceRange Range containing nodes to move.\n * @param {module:engine/model/position~Position} targetPosition Position to which nodes should be moved.\n * @returns {module:engine/model/range~Range} Range containing moved nodes.\n */\nfunction move(sourceRange, targetPosition) {\n\t/* jshint validthis:true */\n\tif (!sourceRange.isFlat) {\n\t\t/**\n   * Trying to move a range that starts and ends in different element.\n   *\n   * @error model-writer-move-range-not-flat\n   */\n\t\tthrow new _ckeditorerror2.default('model-writer-move-range-not-flat: ' + 'Trying to move a range that starts and ends in different element.');\n\t}\n\n\tvar nodes = this.remove(sourceRange);\n\n\t// We have to fix `targetPosition` because model changed after nodes from `sourceRange` got removed and\n\t// that change might have an impact on `targetPosition`.\n\ttargetPosition = targetPosition._getTransformedByDeletion(sourceRange.start, sourceRange.end.offset - sourceRange.start.offset);\n\n\treturn this.insert(targetPosition, nodes);\n}\n\n/**\n * Sets given attribute on nodes in given range.\n *\n * @param {module:engine/model/range~Range} range Range containing nodes that should have the attribute set.\n * @param {String} key Key of attribute to set.\n * @param {*} value Attribute value.\n */\nfunction setAttribute(range, key, value) {\n\t// Range might start or end in text nodes, so we have to split them.\n\t_splitNodeAtPosition(range.start);\n\t_splitNodeAtPosition(range.end);\n\n\t// Iterate over all items in the range.\n\tvar _iteratorNormalCompletion = true;\n\tvar _didIteratorError = false;\n\tvar _iteratorError = undefined;\n\n\ttry {\n\t\tfor (var _iterator = range.getItems()[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\tvar item = _step.value;\n\n\t\t\t// Iterator will return `TextProxy` instances but we know that those text proxies will\n\t\t\t// always represent full text nodes (this is guaranteed thanks to splitting we did before).\n\t\t\t// So, we can operate on those text proxies' text nodes.\n\t\t\tvar node = item.is('textProxy') ? item.textNode : item;\n\n\t\t\tif (value !== null) {\n\t\t\t\tnode.setAttribute(key, value);\n\t\t\t} else {\n\t\t\t\tnode.removeAttribute(key);\n\t\t\t}\n\n\t\t\t// After attributes changing it may happen that some text nodes can be merged. Try to merge with previous node.\n\t\t\t_mergeNodesAtIndex(node.parent, node.index);\n\t\t}\n\n\t\t// Try to merge last changed node with it's previous sibling (not covered by the loop above).\n\t} catch (err) {\n\t\t_didIteratorError = true;\n\t\t_iteratorError = err;\n\t} finally {\n\t\ttry {\n\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t_iterator.return();\n\t\t\t}\n\t\t} finally {\n\t\t\tif (_didIteratorError) {\n\t\t\t\tthrow _iteratorError;\n\t\t\t}\n\t\t}\n\t}\n\n\t_mergeNodesAtIndex(range.end.parent, range.end.index);\n}\n\n/**\n * Removes given attribute from nodes in given range.\n *\n * @param {module:engine/model/range~Range} range Range containing nodes that should have the attribute removed.\n * @param {String} key Key of attribute to remove.\n */\nfunction removeAttribute(range, key) {\n\t/* jshint validthis:true */\n\tthis.setAttribute(range, key, null);\n}\n\n/**\n * Normalizes given object or an array of objects to an array of {@link module:engine/model/node~Node nodes}. See\n * {@link module:engine/model/node~NodeSet NodeSet} for details on how normalization is performed.\n *\n * @param {module:engine/model/node~NodeSet} nodes Objects to normalize.\n * @returns {Array.<module:engine/model/node~Node>} Normalized nodes.\n */\nfunction normalizeNodes(nodes) {\n\tvar normalized = [];\n\n\tif (!(nodes instanceof Array)) {\n\t\tnodes = [nodes];\n\t}\n\n\t// Convert instances of classes other than Node.\n\tfor (var i = 0; i < nodes.length; i++) {\n\t\tif (typeof nodes[i] == 'string') {\n\t\t\tnormalized.push(new _text2.default(nodes[i]));\n\t\t} else if (nodes[i] instanceof _textproxy2.default) {\n\t\t\tnormalized.push(new _text2.default(nodes[i].data, nodes[i].getAttributes()));\n\t\t} else if (nodes[i] instanceof _documentfragment2.default || nodes[i] instanceof _nodelist2.default) {\n\t\t\tvar _iteratorNormalCompletion2 = true;\n\t\t\tvar _didIteratorError2 = false;\n\t\t\tvar _iteratorError2 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator2 = nodes[i][Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {\n\t\t\t\t\tvar child = _step2.value;\n\n\t\t\t\t\tnormalized.push(child);\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError2 = true;\n\t\t\t\t_iteratorError2 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion2 && _iterator2.return) {\n\t\t\t\t\t\t_iterator2.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError2) {\n\t\t\t\t\t\tthrow _iteratorError2;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t} else if (nodes[i] instanceof _node2.default) {\n\t\t\tnormalized.push(nodes[i]);\n\t\t}\n\t\t// Skip unrecognized type.\n\t}\n\n\t// Merge text nodes.\n\tfor (var _i = 1; _i < normalized.length; _i++) {\n\t\tvar node = normalized[_i];\n\t\tvar prev = normalized[_i - 1];\n\n\t\tif (node instanceof _text2.default && prev instanceof _text2.default && _haveSameAttributes(node, prev)) {\n\t\t\t// Doing this instead changing prev.data because .data is readonly.\n\t\t\tnormalized.splice(_i - 1, 2, new _text2.default(prev.data + node.data, prev.getAttributes()));\n\t\t\t_i--;\n\t\t}\n\t}\n\n\treturn normalized;\n}\n\n/**\n * Checks if nodes before and after given index in given element are {@link module:engine/model/text~Text text nodes} and\n * merges them into one node if they have same attributes.\n *\n * Merging is done by removing two text nodes and inserting a new text node containing data from both merged text nodes.\n *\n * @ignore\n * @private\n * @param {module:engine/model/element~Element} element Parent element of nodes to merge.\n * @param {Number} index Index between nodes to merge.\n */\nfunction _mergeNodesAtIndex(element, index) {\n\tvar nodeBefore = element.getChild(index - 1);\n\tvar nodeAfter = element.getChild(index);\n\n\t// Check if both of those nodes are text objects with same attributes.\n\tif (nodeBefore && nodeAfter && nodeBefore.is('text') && nodeAfter.is('text') && _haveSameAttributes(nodeBefore, nodeAfter)) {\n\t\t// Append text of text node after index to the before one.\n\t\tvar mergedNode = new _text2.default(nodeBefore.data + nodeAfter.data, nodeBefore.getAttributes());\n\n\t\t// Remove separate text nodes.\n\t\telement.removeChildren(index - 1, 2);\n\n\t\t// Insert merged text node.\n\t\telement.insertChildren(index - 1, mergedNode);\n\t}\n}\n\n/**\n * Checks if given position is in a text node, and if so, splits the text node in two text nodes, each of them\n * containing a part of original text node.\n *\n * @ignore\n * @private\n * @param {module:engine/model/position~Position} position Position at which node should be split.\n */\nfunction _splitNodeAtPosition(position) {\n\tvar textNode = position.textNode;\n\tvar element = position.parent;\n\n\tif (textNode) {\n\t\tvar offsetDiff = position.offset - textNode.startOffset;\n\t\tvar index = textNode.index;\n\n\t\telement.removeChildren(index, 1);\n\n\t\tvar firstPart = new _text2.default(textNode.data.substr(0, offsetDiff), textNode.getAttributes());\n\t\tvar secondPart = new _text2.default(textNode.data.substr(offsetDiff), textNode.getAttributes());\n\n\t\telement.insertChildren(index, [firstPart, secondPart]);\n\t}\n}\n\n/**\n * Checks whether two given nodes have same attributes.\n *\n * @ignore\n * @private\n * @param {module:engine/model/node~Node} nodeA Node to check.\n * @param {module:engine/model/node~Node} nodeB Node to check.\n * @returns {Boolean} `true` if nodes have same attributes, `false` otherwise.\n */\nfunction _haveSameAttributes(nodeA, nodeB) {\n\tvar iteratorA = nodeA.getAttributes();\n\tvar iteratorB = nodeB.getAttributes();\n\n\tvar _iteratorNormalCompletion3 = true;\n\tvar _didIteratorError3 = false;\n\tvar _iteratorError3 = undefined;\n\n\ttry {\n\t\tfor (var _iterator3 = iteratorA[Symbol.iterator](), _step3; !(_iteratorNormalCompletion3 = (_step3 = _iterator3.next()).done); _iteratorNormalCompletion3 = true) {\n\t\t\tvar attr = _step3.value;\n\n\t\t\tif (attr[1] !== nodeB.getAttribute(attr[0])) {\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\titeratorB.next();\n\t\t}\n\t} catch (err) {\n\t\t_didIteratorError3 = true;\n\t\t_iteratorError3 = err;\n\t} finally {\n\t\ttry {\n\t\t\tif (!_iteratorNormalCompletion3 && _iterator3.return) {\n\t\t\t\t_iterator3.return();\n\t\t\t}\n\t\t} finally {\n\t\t\tif (_didIteratorError3) {\n\t\t\t\tthrow _iteratorError3;\n\t\t\t}\n\t\t}\n\t}\n\n\treturn iteratorB.next().done;\n}\n\n/**\n * Value that can be normalized to an array of {@link module:engine/model/node~Node nodes}.\n *\n * Non-arrays are normalized as follows:\n * * {@link module:engine/model/node~Node Node} is left as is,\n * * {@link module:engine/model/textproxy~TextProxy TextProxy} and `String` are normalized to {@link module:engine/model/text~Text Text},\n * * {@link module:engine/model/nodelist~NodeList NodeList} is normalized to an array containing all nodes that are in that node list,\n * * {@link module:engine/model/documentfragment~DocumentFragment DocumentFragment} is normalized to an array containing all of it's\n * * children.\n *\n * Arrays are processed item by item like non-array values and flattened to one array. Normalization always results in\n * a flat array of {@link module:engine/model/node~Node nodes}. Consecutive text nodes (or items normalized to text nodes) will be\n * merged if they have same attributes.\n *\n * @typedef {module:engine/model/node~Node|module:engine/model/textproxy~TextProxy|String|\n * module:engine/model/nodelist~NodeList|module:engine/model/documentfragment~DocumentFragment|Iterable}\n * module:engine/model/node~NodeSet\n */\n\n/***/ }),\n/* 29 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _node = __webpack_require__(74);\n\nvar _node2 = _interopRequireDefault(_node);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module engine/view/text\n */\n\n/**\n * Tree view text node.\n *\n * @extends module:engine/view/node~Node\n */\nvar Text = function (_Node) {\n\t_inherits(Text, _Node);\n\n\t/**\n  * Creates a tree view text node.\n  *\n  * @param {String} data Text.\n  */\n\tfunction Text(data) {\n\t\t_classCallCheck(this, Text);\n\n\t\t/**\n   * The text content.\n   *\n   * Setting the data fires the {@link module:engine/view/node~Node#event:change:text change event}.\n   *\n   * @private\n   * @member {String} module:engine/view/text~Text#_data\n   */\n\t\tvar _this = _possibleConstructorReturn(this, (Text.__proto__ || Object.getPrototypeOf(Text)).call(this));\n\n\t\t_this._data = data;\n\t\treturn _this;\n\t}\n\n\t/**\n  * Clones this node.\n  *\n  * @returns {module:engine/view/text~Text} Text node that is a clone of this node.\n  */\n\n\n\t_createClass(Text, [{\n\t\tkey: 'clone',\n\t\tvalue: function clone() {\n\t\t\treturn new Text(this.data);\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: 'is',\n\t\tvalue: function is(type) {\n\t\t\treturn type == 'text';\n\t\t}\n\n\t\t/**\n   * The text content.\n   *\n   * Setting the data fires the {@link module:engine/view/node~Node#event:change:text change event}.\n   */\n\n\t}, {\n\t\tkey: 'isSimilar',\n\n\n\t\t/**\n   * Checks if this text node is similar to other text node.\n   * Both nodes should have the same data to be considered as similar.\n   *\n   * @param {module:engine/view/text~Text} otherNode Node to check if it is same as this node.\n   * @returns {Boolean}\n   */\n\t\tvalue: function isSimilar(otherNode) {\n\t\t\tif (!(otherNode instanceof Text)) {\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\treturn this === otherNode || this.data === otherNode.data;\n\t\t}\n\t}, {\n\t\tkey: 'data',\n\t\tget: function get() {\n\t\t\treturn this._data;\n\t\t},\n\t\tset: function set(data) {\n\t\t\tthis._fireChange('text', this);\n\n\t\t\tthis._data = data;\n\t\t}\n\t}]);\n\n\treturn Text;\n}(_node2.default);\n\nexports.default = Text;\n\n/***/ }),\n/* 30 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n/* WEBPACK VAR INJECTION */(function(module, global) {\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; };\n\nvar _checkGlobal = __webpack_require__(430);\n\nvar _checkGlobal2 = _interopRequireDefault(_checkGlobal);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** Used to determine if values are of the language type `Object`. */\nvar objectTypes = {\n  'function': true,\n  'object': true\n};\n\n/** Detect free variable `exports`. */\nvar freeExports = objectTypes[ false ? 'undefined' : _typeof(exports)] && exports && !exports.nodeType ? exports : undefined;\n\n/** Detect free variable `module`. */\nvar freeModule = objectTypes[ false ? 'undefined' : _typeof(module)] && module && !module.nodeType ? module : undefined;\n\n/** Detect free variable `global` from Node.js. */\nvar freeGlobal = (0, _checkGlobal2.default)(freeExports && freeModule && (typeof global === 'undefined' ? 'undefined' : _typeof(global)) == 'object' && global);\n\n/** Detect free variable `self`. */\nvar freeSelf = (0, _checkGlobal2.default)(objectTypes[typeof self === 'undefined' ? 'undefined' : _typeof(self)] && self);\n\n/** Detect free variable `window`. */\nvar freeWindow = (0, _checkGlobal2.default)(objectTypes[typeof window === 'undefined' ? 'undefined' : _typeof(window)] && window);\n\n/** Detect `this` as the global object. */\nvar thisGlobal = (0, _checkGlobal2.default)(objectTypes[_typeof(undefined)] && undefined);\n\n/**\n * Used as a reference to the global object.\n *\n * The `this` value is used if it's the global object to avoid Greasemonkey's\n * restricted `window` object, otherwise the `window` object is used.\n */\nvar root = freeGlobal || freeWindow !== (thisGlobal && thisGlobal.window) && freeWindow || freeSelf || thisGlobal || Function('return this')();\n\nexports.default = root;\n/* WEBPACK VAR INJECTION */}.call(exports, __webpack_require__(99)(module), __webpack_require__(153)))\n\n/***/ }),\n/* 31 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }; /**\n                                                                                                                                                                                                                                                                               * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                               * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                               */\n\n/**\n * @module utils/observablemixin\n */\n\nvar _emittermixin = __webpack_require__(8);\n\nvar _emittermixin2 = _interopRequireDefault(_emittermixin);\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nvar _extend = __webpack_require__(53);\n\nvar _extend2 = _interopRequireDefault(_extend);\n\nvar _isObject = __webpack_require__(13);\n\nvar _isObject2 = _interopRequireDefault(_isObject);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nvar attributesSymbol = Symbol('attributes');\nvar boundObservablesSymbol = Symbol('boundObservables');\nvar boundAttributesSymbol = Symbol('boundAttributes');\n\n/**\n * Mixin that injects the \"observable attributes\" and data binding functionality.\n * Used mainly in the {@link module:ui/model~Model} class.\n *\n * @mixin ObservableMixin\n * @mixes module:utils/emittermixin~EmitterMixin\n * @implements module:utils/observablemixin~Observable\n */\nvar ObservableMixin = {\n\t/**\n  * Creates and sets the value of an observable attribute of this object. Such an attribute becomes a part\n  * of the state and is be observable.\n  *\n  * It accepts also a single object literal containing key/value pairs with attributes to be set.\n  *\n  * This method throws the observable-set-cannot-override error if the observable instance already\n  * have a property with a given attribute name. This prevents from mistakenly overriding existing\n  * properties and methods, but means that `foo.set( 'bar', 1 )` may be slightly slower than `foo.bar = 1`.\n  *\n  * @method #set\n  * @param {String} name The attributes name.\n  * @param {*} value The attributes value.\n  */\n\tset: function set(name, value) {\n\t\tvar _this = this;\n\n\t\t// If the first parameter is an Object, iterate over its properties.\n\t\tif ((0, _isObject2.default)(name)) {\n\t\t\tObject.keys(name).forEach(function (attr) {\n\t\t\t\t_this.set(attr, name[attr]);\n\t\t\t}, this);\n\n\t\t\treturn;\n\t\t}\n\n\t\tinitObservable(this);\n\n\t\tvar attributes = this[attributesSymbol];\n\n\t\tif (name in this && !attributes.has(name)) {\n\t\t\t/**\n    * Cannot override an existing property.\n    *\n    * This error is thrown when trying to {@link ~Observable#set set} an attribute with\n    * a name of an already existing property. For example:\n    *\n    *\t\tlet observable = new Model();\n    *\t\tobservable.property = 1;\n    *\t\tobservable.set( 'property', 2 );\t\t// throws\n    *\n    *\t\tobservable.set( 'attr', 1 );\n    *\t\tobservable.set( 'attr', 2 );\t\t\t// ok, because this is an existing attribute.\n    *\n    * @error observable-set-cannot-override\n    */\n\t\t\tthrow new _ckeditorerror2.default('observable-set-cannot-override: Cannot override an existing property.');\n\t\t}\n\n\t\tObject.defineProperty(this, name, {\n\t\t\tenumerable: true,\n\t\t\tconfigurable: true,\n\n\t\t\tget: function get() {\n\t\t\t\treturn attributes.get(name);\n\t\t\t},\n\t\t\tset: function set(value) {\n\t\t\t\tvar oldValue = attributes.get(name);\n\n\t\t\t\t// Allow undefined as an initial value like A.define( 'x', undefined ) (#132).\n\t\t\t\t// Note: When attributes map has no such own property, then its value is undefined.\n\t\t\t\tif (oldValue !== value || !attributes.has(name)) {\n\t\t\t\t\tattributes.set(name, value);\n\t\t\t\t\tthis.fire('change:' + name, name, value, oldValue);\n\t\t\t\t}\n\t\t\t}\n\t\t});\n\n\t\tthis[name] = value;\n\t},\n\n\n\t/**\n  * Binds observable attributes to another objects implementing {@link ~ObservableMixin}\n  * interface (like {@link module:ui/model~Model}).\n  *\n  * Once bound, the observable will immediately share the current state of attributes\n  * of the observable it is bound to and react to the changes to these attributes\n  * in the future.\n  *\n  * **Note**: To release the binding use {@link module:utils/observablemixin~ObservableMixin#unbind}.\n  *\n  *\t\tA.bind( 'a' ).to( B );\n  *\t\tA.bind( 'a' ).to( B, 'b' );\n  *\t\tA.bind( 'a', 'b' ).to( B, 'c', 'd' );\n  *\t\tA.bind( 'a' ).to( B, 'b', C, 'd', ( b, d ) => b + d );\n  *\n  * @method #bind\n  * @param {...String} bindAttrs Observable attributes that will be bound to another observable(s).\n  * @returns {module:utils/observablemixin~BindChain}\n  */\n\tbind: function bind() {\n\t\tfor (var _len = arguments.length, bindAttrs = Array(_len), _key = 0; _key < _len; _key++) {\n\t\t\tbindAttrs[_key] = arguments[_key];\n\t\t}\n\n\t\tif (!bindAttrs.length || !isStringArray(bindAttrs)) {\n\t\t\t/**\n    * All attributes must be strings.\n    *\n    * @error observable-bind-wrong-attrs\n    */\n\t\t\tthrow new _ckeditorerror2.default('observable-bind-wrong-attrs: All attributes must be strings.');\n\t\t}\n\n\t\tif (new Set(bindAttrs).size !== bindAttrs.length) {\n\t\t\t/**\n    * Attributes must be unique.\n    *\n    * @error observable-bind-duplicate-attrs\n    */\n\t\t\tthrow new _ckeditorerror2.default('observable-bind-duplicate-attrs: Attributes must be unique.');\n\t\t}\n\n\t\tinitObservable(this);\n\n\t\tvar boundAttributes = this[boundAttributesSymbol];\n\n\t\tbindAttrs.forEach(function (attrName) {\n\t\t\tif (boundAttributes.has(attrName)) {\n\t\t\t\t/**\n     * Cannot bind the same attribute more that once.\n     *\n     * @error observable-bind-rebind\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('observable-bind-rebind: Cannot bind the same attribute more that once.');\n\t\t\t}\n\t\t});\n\n\t\tvar bindings = new Map();\n\n\t\t/**\n   * @typedef Binding\n   * @type Object\n   * @property {Array} attr Attribute which is bound.\n   * @property {Array} to Array of observable–attribute components of the binding (`{ observable: ..., attr: .. }`).\n   * @property {Array} callback A function which processes `to` components.\n   */\n\t\tbindAttrs.forEach(function (a) {\n\t\t\tvar binding = { attr: a, to: [] };\n\n\t\t\tboundAttributes.set(a, binding);\n\t\t\tbindings.set(a, binding);\n\t\t});\n\n\t\t/**\n   * @typedef BindChain\n   * @type Object\n   * @property {Function} to See {@link ~ObservableMixin#_bindTo}.\n   * @property {module:utils/observablemixin~Observable} _observable The observable which initializes the binding.\n   * @property {Array} _bindAttrs Array of `_observable` attributes to be bound.\n   * @property {Array} _to Array of `to()` observable–attributes (`{ observable: toObservable, attrs: ...toAttrs }`).\n   * @property {Map} _bindings Stores bindings to be kept in\n   *  {@link ~ObservableMixin#_boundAttributes}/{@link ~ObservableMixin#_boundObservables}\n   * initiated in this binding chain.\n   */\n\t\treturn {\n\t\t\tto: bindTo,\n\n\t\t\t_observable: this,\n\t\t\t_bindAttrs: bindAttrs,\n\t\t\t_to: [],\n\t\t\t_bindings: bindings\n\t\t};\n\t},\n\n\n\t/**\n  * Removes the binding created with {@link ~ObservableMixin#bind}.\n  *\n  *\t\tA.unbind( 'a' );\n  *\t\tA.unbind();\n  *\n  * @method #unbind\n  * @param {...String} [unbindAttrs] Observable attributes to be unbound. All the bindings will\n  * be released if no attributes provided.\n  */\n\tunbind: function unbind() {\n\t\tvar _this2 = this;\n\n\t\t// Nothing to do here if not inited yet.\n\t\tif (!(attributesSymbol in this)) {\n\t\t\treturn;\n\t\t}\n\n\t\tvar boundAttributes = this[boundAttributesSymbol];\n\t\tvar boundObservables = this[boundObservablesSymbol];\n\n\t\tfor (var _len2 = arguments.length, unbindAttrs = Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {\n\t\t\tunbindAttrs[_key2] = arguments[_key2];\n\t\t}\n\n\t\tif (unbindAttrs.length) {\n\t\t\tif (!isStringArray(unbindAttrs)) {\n\t\t\t\t/**\n     * Attributes must be strings.\n     *\n     * @error observable-unbind-wrong-attrs\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('observable-unbind-wrong-attrs: Attributes must be strings.');\n\t\t\t}\n\n\t\t\tunbindAttrs.forEach(function (attrName) {\n\t\t\t\tvar binding = boundAttributes.get(attrName);\n\t\t\t\tvar toObservable = void 0,\n\t\t\t\t    toAttr = void 0,\n\t\t\t\t    toAttrs = void 0,\n\t\t\t\t    toAttrBindings = void 0;\n\n\t\t\t\tbinding.to.forEach(function (to) {\n\t\t\t\t\t// TODO: ES6 destructuring.\n\t\t\t\t\ttoObservable = to[0];\n\t\t\t\t\ttoAttr = to[1];\n\t\t\t\t\ttoAttrs = boundObservables.get(toObservable);\n\t\t\t\t\ttoAttrBindings = toAttrs[toAttr];\n\n\t\t\t\t\ttoAttrBindings.delete(binding);\n\n\t\t\t\t\tif (!toAttrBindings.size) {\n\t\t\t\t\t\tdelete toAttrs[toAttr];\n\t\t\t\t\t}\n\n\t\t\t\t\tif (!Object.keys(toAttrs).length) {\n\t\t\t\t\t\tboundObservables.delete(toObservable);\n\t\t\t\t\t\t_this2.stopListening(toObservable, 'change');\n\t\t\t\t\t}\n\t\t\t\t});\n\n\t\t\t\tboundAttributes.delete(attrName);\n\t\t\t});\n\t\t} else {\n\t\t\tboundObservables.forEach(function (bindings, boundObservable) {\n\t\t\t\t_this2.stopListening(boundObservable, 'change');\n\t\t\t});\n\n\t\t\tboundObservables.clear();\n\t\t\tboundAttributes.clear();\n\t\t}\n\t}\n\n\t/**\n  * @private\n  * @member ~ObservableMixin#_boundAttributes\n  */\n\n\t/**\n  * @private\n  * @member ~ObservableMixin#_boundObservables\n  */\n\n\t/**\n  * @private\n  * @member ~ObservableMixin#_bindTo\n  */\n\n};\n\nexports.default = ObservableMixin;\n\n// Init symbol properties needed to for the observable mechanism to work.\n//\n// @private\n// @param {module:utils/observablemixin~ObservableMixin} observable\n\nfunction initObservable(observable) {\n\t// Do nothing if already inited.\n\tif (attributesSymbol in observable) {\n\t\treturn;\n\t}\n\n\t// The internal hash containing the observable's state.\n\t//\n\t// @private\n\t// @type {Map}\n\tObject.defineProperty(observable, attributesSymbol, {\n\t\tvalue: new Map()\n\t});\n\n\t// Map containing bindings to external observables. It shares the binding objects\n\t// (`{ observable: A, attr: 'a', to: ... }`) with {@link module:utils/observablemixin~ObservableMixin#_boundAttributes} and\n\t// it is used to observe external observables to update own attributes accordingly.\n\t// See {@link module:utils/observablemixin~ObservableMixin#bind}.\n\t//\n\t//\t\tA.bind( 'a', 'b', 'c' ).to( B, 'x', 'y', 'x' );\n\t//\t\tconsole.log( A._boundObservables );\n\t//\n\t//\t\t\tMap( {\n\t//\t\t\t\tB: {\n\t//\t\t\t\t\tx: Set( [\n\t//\t\t\t\t\t\t{ observable: A, attr: 'a', to: [ [ B, 'x' ] ] },\n\t//\t\t\t\t\t\t{ observable: A, attr: 'c', to: [ [ B, 'x' ] ] }\n\t//\t\t\t\t\t] ),\n\t//\t\t\t\t\ty: Set( [\n\t//\t\t\t\t\t\t{ observable: A, attr: 'b', to: [ [ B, 'y' ] ] },\n\t//\t\t\t\t\t] )\n\t//\t\t\t\t}\n\t//\t\t\t} )\n\t//\n\t//\t\tA.bind( 'd' ).to( B, 'z' ).to( C, 'w' ).as( callback );\n\t//\t\tconsole.log( A._boundObservables );\n\t//\n\t//\t\t\tMap( {\n\t//\t\t\t\tB: {\n\t//\t\t\t\t\tx: Set( [\n\t//\t\t\t\t\t\t{ observable: A, attr: 'a', to: [ [ B, 'x' ] ] },\n\t//\t\t\t\t\t\t{ observable: A, attr: 'c', to: [ [ B, 'x' ] ] }\n\t//\t\t\t\t\t] ),\n\t//\t\t\t\t\ty: Set( [\n\t//\t\t\t\t\t\t{ observable: A, attr: 'b', to: [ [ B, 'y' ] ] },\n\t//\t\t\t\t\t] ),\n\t//\t\t\t\t\tz: Set( [\n\t//\t\t\t\t\t\t{ observable: A, attr: 'd', to: [ [ B, 'z' ], [ C, 'w' ] ], callback: callback }\n\t//\t\t\t\t\t] )\n\t//\t\t\t\t},\n\t//\t\t\t\tC: {\n\t//\t\t\t\t\tw: Set( [\n\t//\t\t\t\t\t\t{ observable: A, attr: 'd', to: [ [ B, 'z' ], [ C, 'w' ] ], callback: callback }\n\t//\t\t\t\t\t] )\n\t//\t\t\t\t}\n\t//\t\t\t} )\n\t//\n\t// @private\n\t// @type {Map}\n\tObject.defineProperty(observable, boundObservablesSymbol, {\n\t\tvalue: new Map()\n\t});\n\n\t// Object that stores which attributes of this observable are bound and how. It shares\n\t// the binding objects (`{ observable: A, attr: 'a', to: ... }`) with {@link utils.ObservableMixin#_boundObservables}.\n\t// This data structure is a reverse of {@link utils.ObservableMixin#_boundObservables} and it is helpful for\n\t// {@link utils.ObservableMixin#unbind}.\n\t//\n\t// See {@link utils.ObservableMixin#bind}.\n\t//\n\t//\t\tA.bind( 'a', 'b', 'c' ).to( B, 'x', 'y', 'x' );\n\t//\t\tconsole.log( A._boundAttributes );\n\t//\n\t//\t\t\tMap( {\n\t//\t\t\t\ta: { observable: A, attr: 'a', to: [ [ B, 'x' ] ] },\n\t//\t\t\t\tb: { observable: A, attr: 'b', to: [ [ B, 'y' ] ] },\n\t//\t\t\t\tc: { observable: A, attr: 'c', to: [ [ B, 'x' ] ] }\n\t//\t\t\t} )\n\t//\n\t//\t\tA.bind( 'd' ).to( B, 'z' ).to( C, 'w' ).as( callback );\n\t//\t\tconsole.log( A._boundAttributes );\n\t//\n\t//\t\t\tMap( {\n\t//\t\t\t\ta: { observable: A, attr: 'a', to: [ [ B, 'x' ] ] },\n\t//\t\t\t\tb: { observable: A, attr: 'b', to: [ [ B, 'y' ] ] },\n\t//\t\t\t\tc: { observable: A, attr: 'c', to: [ [ B, 'x' ] ] },\n\t//\t\t\t\td: { observable: A, attr: 'd', to: [ [ B, 'z' ], [ C, 'w' ] ], callback: callback }\n\t//\t\t\t} )\n\t//\n\t// @private\n\t// @type {Map}\n\tObject.defineProperty(observable, boundAttributesSymbol, {\n\t\tvalue: new Map()\n\t});\n}\n\n// A chaining for {@link module:utils/observablemixin~ObservableMixin#bind} providing `.to()` interface.\n//\n// @private\n// @param {...[Observable|String|Function]} args Arguments of the `.to( args )` binding.\nfunction bindTo() {\n\tvar _this3 = this;\n\n\t/* jshint validthis: true */\n\tvar parsedArgs = parseBindToArgs.apply(undefined, arguments);\n\tvar bindingsKeys = Array.from(this._bindings.keys());\n\tvar numberOfBindings = bindingsKeys.length;\n\n\t// Eliminate A.bind( 'x' ).to( B, C )\n\tif (!parsedArgs.callback && parsedArgs.to.length > 1) {\n\t\t/**\n   * Binding multiple observables only possible with callback.\n   *\n   * @error observable-bind-no-callback\n   */\n\t\tthrow new _ckeditorerror2.default('observable-bind-to-no-callback: Binding multiple observables only possible with callback.');\n\t}\n\n\t// Eliminate A.bind( 'x', 'y' ).to( B, callback )\n\tif (numberOfBindings > 1 && parsedArgs.callback) {\n\t\t/**\n   * Cannot bind multiple attributes and use a callback in one binding.\n   *\n   * @error observable-bind-to-extra-callback\n   */\n\t\tthrow new _ckeditorerror2.default('observable-bind-to-extra-callback: Cannot bind multiple attributes and use a callback in one binding.');\n\t}\n\n\tparsedArgs.to.forEach(function (to) {\n\t\t// Eliminate A.bind( 'x', 'y' ).to( B, 'a' )\n\t\tif (to.attrs.length && to.attrs.length !== numberOfBindings) {\n\t\t\t/**\n    * The number of attributes must match.\n    *\n    * @error observable-bind-to-attrs-length\n    */\n\t\t\tthrow new _ckeditorerror2.default('observable-bind-to-attrs-length: The number of attributes must match.');\n\t\t}\n\n\t\t// When no to.attrs specified, observing source attributes instead i.e.\n\t\t// A.bind( 'x', 'y' ).to( B ) -> Observe B.x and B.y\n\t\tif (!to.attrs.length) {\n\t\t\tto.attrs = _this3._bindAttrs;\n\t\t}\n\t});\n\n\tthis._to = parsedArgs.to;\n\n\t// Fill {@link BindChain#_bindings} with callback. When the callback is set there's only one binding.\n\tif (parsedArgs.callback) {\n\t\tthis._bindings.get(bindingsKeys[0]).callback = parsedArgs.callback;\n\t}\n\n\tattachBindToListeners(this._observable, this._to);\n\n\t// Update observable._boundAttributes and observable._boundObservables.\n\tupdateBindToBound(this);\n\n\t// Set initial values of bound attributes.\n\tthis._bindAttrs.forEach(function (attrName) {\n\t\tupdateBoundObservableAttr(_this3._observable, attrName);\n\t});\n}\n\n// Check if all entries of the array are of `String` type.\n//\n// @private\n// @param {Array} arr An array to be checked.\n// @returns {Boolean}\nfunction isStringArray(arr) {\n\treturn arr.every(function (a) {\n\t\treturn typeof a == 'string';\n\t});\n}\n\n// Parses and validates {@link Observable#bind}`.to( args )` arguments and returns\n// an object with a parsed structure. For example\n//\n//\t\tA.bind( 'x' ).to( B, 'a', C, 'b', call );\n//\n// becomes\n//\n//\t\t{\n//\t\t\tto: [\n//\t\t\t\t{ observable: B, attrs: [ 'a' ] },\n//\t\t\t\t{ observable: C, attrs: [ 'b' ] },\n//\t\t\t],\n//\t\t\tcallback: call\n// \t\t}\n//\n// @private\n// @param {...*} args Arguments of {@link Observable#bind}`.to( args )`.\n// @returns {Object}\nfunction parseBindToArgs() {\n\tfor (var _len3 = arguments.length, args = Array(_len3), _key3 = 0; _key3 < _len3; _key3++) {\n\t\targs[_key3] = arguments[_key3];\n\t}\n\n\t// Eliminate A.bind( 'x' ).to()\n\tif (!args.length) {\n\t\t/**\n   * Invalid argument syntax in `to()`.\n   *\n   * @error observable-bind-to-parse-error\n   */\n\t\tthrow new _ckeditorerror2.default('observable-bind-to-parse-error: Invalid argument syntax in `to()`.');\n\t}\n\n\tvar parsed = { to: [] };\n\tvar lastObservable = void 0;\n\n\tif (typeof args[args.length - 1] == 'function') {\n\t\tparsed.callback = args.pop();\n\t}\n\n\targs.forEach(function (a) {\n\t\tif (typeof a == 'string') {\n\t\t\tlastObservable.attrs.push(a);\n\t\t} else if ((typeof a === 'undefined' ? 'undefined' : _typeof(a)) == 'object') {\n\t\t\tlastObservable = { observable: a, attrs: [] };\n\t\t\tparsed.to.push(lastObservable);\n\t\t} else {\n\t\t\tthrow new _ckeditorerror2.default('observable-bind-to-parse-error: Invalid argument syntax in `to()`.');\n\t\t}\n\t});\n\n\treturn parsed;\n}\n\n// Synchronizes {@link module:utils/observablemixin#_boundObservables} with {@link Binding}.\n//\n// @private\n// @param {Binding} binding A binding to store in {@link Observable#_boundObservables}.\n// @param {Observable} toObservable A observable, which is a new component of `binding`.\n// @param {String} toAttrName A name of `toObservable`'s attribute, a new component of the `binding`.\nfunction updateBoundObservables(observable, binding, toObservable, toAttrName) {\n\tvar boundObservables = observable[boundObservablesSymbol];\n\tvar bindingsToObservable = boundObservables.get(toObservable);\n\tvar bindings = bindingsToObservable || {};\n\n\tif (!bindings[toAttrName]) {\n\t\tbindings[toAttrName] = new Set();\n\t}\n\n\t// Pass the binding to a corresponding Set in `observable._boundObservables`.\n\tbindings[toAttrName].add(binding);\n\n\tif (!bindingsToObservable) {\n\t\tboundObservables.set(toObservable, bindings);\n\t}\n}\n\n// Synchronizes {@link Observable#_boundAttributes} and {@link Observable#_boundObservables}\n// with {@link BindChain}.\n//\n// Assuming the following binding being created\n//\n// \t\tA.bind( 'a', 'b' ).to( B, 'x', 'y' );\n//\n// the following bindings were initialized by {@link Observable#bind} in {@link BindChain#_bindings}:\n//\n// \t\t{\n// \t\t\ta: { observable: A, attr: 'a', to: [] },\n// \t\t\tb: { observable: A, attr: 'b', to: [] },\n// \t\t}\n//\n// Iterate over all bindings in this chain and fill their `to` properties with\n// corresponding to( ... ) arguments (components of the binding), so\n//\n// \t\t{\n// \t\t\ta: { observable: A, attr: 'a', to: [ B, 'x' ] },\n// \t\t\tb: { observable: A, attr: 'b', to: [ B, 'y' ] },\n// \t\t}\n//\n// Then update the structure of {@link Observable#_boundObservables} with updated\n// binding, so it becomes:\n//\n// \t\tMap( {\n// \t\t\tB: {\n// \t\t\t\tx: Set( [\n// \t\t\t\t\t{ observable: A, attr: 'a', to: [ [ B, 'x' ] ] }\n// \t\t\t\t] ),\n// \t\t\t\ty: Set( [\n// \t\t\t\t\t{ observable: A, attr: 'b', to: [ [ B, 'y' ] ] },\n// \t\t\t\t] )\n//\t\t\t}\n// \t\t} )\n//\n// @private\n// @param {BindChain} chain The binding initialized by {@link Observable#bind}.\nfunction updateBindToBound(chain) {\n\tvar toAttr = void 0;\n\n\tchain._bindings.forEach(function (binding, attrName) {\n\t\t// Note: For a binding without a callback, this will run only once\n\t\t// like in A.bind( 'x', 'y' ).to( B, 'a', 'b' )\n\t\t// TODO: ES6 destructuring.\n\t\tchain._to.forEach(function (to) {\n\t\t\ttoAttr = to.attrs[binding.callback ? 0 : chain._bindAttrs.indexOf(attrName)];\n\n\t\t\tbinding.to.push([to.observable, toAttr]);\n\t\t\tupdateBoundObservables(chain._observable, binding, to.observable, toAttr);\n\t\t});\n\t});\n}\n\n// Updates an attribute of a {@link Observable} with a value\n// determined by an entry in {@link Observable#_boundAttributes}.\n//\n// @private\n// @param {Observable} observable A observable which attribute is to be updated.\n// @param {String} attrName An attribute to be updated.\nfunction updateBoundObservableAttr(observable, attrName) {\n\tvar boundAttributes = observable[boundAttributesSymbol];\n\tvar binding = boundAttributes.get(attrName);\n\tvar attrValue = void 0;\n\n\t// When a binding with callback is created like\n\t//\n\t// \t\tA.bind( 'a' ).to( B, 'b', C, 'c', callback );\n\t//\n\t// collect B.b and C.c, then pass them to callback to set A.a.\n\tif (binding.callback) {\n\t\tattrValue = binding.callback.apply(observable, binding.to.map(function (to) {\n\t\t\treturn to[0][to[1]];\n\t\t}));\n\t} else {\n\t\tattrValue = binding.to[0];\n\t\tattrValue = attrValue[0][attrValue[1]];\n\t}\n\n\tif (observable.hasOwnProperty(attrName)) {\n\t\tobservable[attrName] = attrValue;\n\t} else {\n\t\tobservable.set(attrName, attrValue);\n\t}\n}\n\n// Starts listening to changes in {@link BindChain._to} observables to update\n// {@link BindChain._observable} {@link BindChain._bindAttrs}. Also sets the\n// initial state of {@link BindChain._observable}.\n//\n// @private\n// @param {BindChain} chain The chain initialized by {@link Observable#bind}.\nfunction attachBindToListeners(observable, toBindings) {\n\ttoBindings.forEach(function (to) {\n\t\tvar boundObservables = observable[boundObservablesSymbol];\n\t\tvar bindings = void 0;\n\n\t\t// If there's already a chain between the observables (`observable` listens to\n\t\t// `to.observable`), there's no need to create another `change` event listener.\n\t\tif (!boundObservables.get(to.observable)) {\n\t\t\tobservable.listenTo(to.observable, 'change', function (evt, attrName) {\n\t\t\t\tbindings = boundObservables.get(to.observable)[attrName];\n\n\t\t\t\t// Note: to.observable will fire for any attribute change, react\n\t\t\t\t// to changes of attributes which are bound only.\n\t\t\t\tif (bindings) {\n\t\t\t\t\tbindings.forEach(function (binding) {\n\t\t\t\t\t\tupdateBoundObservableAttr(observable, binding.attr);\n\t\t\t\t\t});\n\t\t\t\t}\n\t\t\t});\n\t\t}\n\t});\n}\n\n(0, _extend2.default)(ObservableMixin, _emittermixin2.default);\n\n/**\n * Fired when an attribute changed value.\n *\n * @event module:utils/observablemixin~ObservableMixin#change:{attribute}\n * @param {String} name The attribute name.\n * @param {*} value The new attribute value.\n * @param {*} oldValue The previous attribute value.\n */\n\n/**\n * Interface representing classes which mix in {@link module:utils/observablemixin~ObservableMixin}.\n *\n * @interface Observable\n */\n\n/***/ }),\n/* 32 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module engine/model/operation/operation\n */\n\nvar _clone = __webpack_require__(94);\n\nvar _clone2 = _interopRequireDefault(_clone);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * Abstract base operation class.\n *\n * @abstract\n */\nvar Operation = function () {\n\t/**\n  * Base operation constructor.\n  * @param {Number} baseVersion {@link module:engine/model/document~Document#version} on which the operation can be applied.\n  */\n\tfunction Operation(baseVersion) {\n\t\t_classCallCheck(this, Operation);\n\n\t\t/**\n   * {@link module:engine/model/document~Document#version} on which operation can be applied. If you try to\n   * {@link module:engine/model/document~Document#applyOperation apply} operation with different base version than the\n   * {@link module:engine/model/document~Document#version document version} the\n   * {@link module:utils/ckeditorerror~CKEditorError model-document-applyOperation-wrong-version} error is thrown.\n   *\n   * @member {Number}\n   */\n\t\tthis.baseVersion = baseVersion;\n\n\t\t/**\n   * Operation type.\n   *\n   * @readonly\n   * @member {String} #type\n   */\n\n\t\t/**\n   * {@link module:engine/model/delta/delta~Delta Delta} which the operation is a part of. This property is set by the\n   * {@link module:engine/model/delta/delta~Delta delta} when the operations is added to it by the\n   * {@link module:engine/model/delta/delta~Delta#addOperation} method.\n   *\n   * @member {module:engine/model/delta/delta~Delta} #delta\n   */\n\n\t\t/**\n   * Creates and returns an operation that has the same parameters as this operation.\n   *\n   * @method #clone\n   * @returns {module:engine/model/operation/operation~Operation} Clone of this operation.\n   */\n\n\t\t/**\n   * Creates and returns a reverse operation. Reverse operation when executed right after\n   * the original operation will bring back tree model state to the point before the original\n   * operation execution. In other words, it reverses changes done by the original operation.\n   *\n   * Keep in mind that tree model state may change since executing the original operation,\n   * so reverse operation will be \"outdated\". In that case you will need to\n   * {@link module:engine/model/operation/transform~transform} it by all operations that were executed after the original operation.\n   *\n   * @method #getReversed\n   * @returns {module:engine/model/operation/operation~Operation} Reversed operation.\n   */\n\n\t\t/**\n   * Executes the operation - modifications described by the operation attributes\n   * will be applied to the tree model.\n   *\n   * @protected\n   * @method #_execute\n   * @returns {Object} Object with additional information about the applied changes. It properties depends on the\n   * operation type.\n   */\n\t}\n\n\t/**\n  * Custom toJSON method to solve child-parent circular dependencies.\n  *\n  * @method #toJSON\n  * @returns {Object} Clone of this object with the delta property replaced with string.\n  */\n\n\n\t_createClass(Operation, [{\n\t\tkey: 'toJSON',\n\t\tvalue: function toJSON() {\n\t\t\tvar json = (0, _clone2.default)(this, true);\n\n\t\t\tjson.__className = this.constructor.className;\n\n\t\t\t// Remove parent delta to avoid circular dependencies.\n\t\t\tdelete json.delta;\n\n\t\t\treturn json;\n\t\t}\n\n\t\t/**\n   * Name of the operation class used for serialization.\n   *\n   * @type {String}\n   */\n\n\t}], [{\n\t\tkey: 'fromJSON',\n\n\n\t\t/**\n   * Creates Operation object from deserilized object, i.e. from parsed JSON string.\n   *\n   * @param {Object} json Deserialized JSON object.\n   * @param {module:engine/model/document~Document} doc Document on which this operation will be applied.\n   * @returns {module:engine/model/operation/operation~Operation}\n   */\n\t\tvalue: function fromJSON(json) {\n\t\t\treturn new this(json.baseVersion);\n\t\t}\n\t}, {\n\t\tkey: 'className',\n\t\tget: function get() {\n\t\t\treturn 'engine.model.operation.Operation';\n\t\t}\n\t}]);\n\n\treturn Operation;\n}();\n\nexports.default = Operation;\n\n/***/ }),\n/* 33 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module engine/view/range\n */\n\nvar _position = __webpack_require__(24);\n\nvar _position2 = _interopRequireDefault(_position);\n\nvar _treewalker = __webpack_require__(76);\n\nvar _treewalker2 = _interopRequireDefault(_treewalker);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * Tree view range.\n */\nvar Range = function () {\n\t/**\n  * Creates a range spanning from `start` position to `end` position.\n  *\n  * **Note:** Constructor creates it's own {@link module:engine/view/position~Position} instances basing on passed values.\n  *\n  * @param {module:engine/view/position~Position} start Start position.\n  * @param {module:engine/view/position~Position} [end] End position. If not set, range will be collapsed at `start` position.\n  */\n\tfunction Range(start) {\n\t\tvar end = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n\n\t\t_classCallCheck(this, Range);\n\n\t\t/**\n   * Start position.\n   *\n   * @member {module:engine/view/position~Position}\n   */\n\t\tthis.start = _position2.default.createFromPosition(start);\n\n\t\t/**\n   * End position.\n   *\n   * @member {module:engine/view/position~Position}\n   */\n\t\tthis.end = end ? _position2.default.createFromPosition(end) : _position2.default.createFromPosition(start);\n\t}\n\n\t/**\n  * Returns an iterator that iterates over all {@link module:engine/view/item~Item view items} that are in this range and returns\n  * them together with additional information like length or {@link module:engine/view/position~Position positions},\n  * grouped as {@link module:engine/view/treewalker~TreeWalkerValue}.\n  *\n  * This iterator uses {@link module:engine/view/treewalker~TreeWalker TreeWalker} with `boundaries` set to this range and\n  * `ignoreElementEnd` option\n  * set to `true`.\n  *\n  * @returns {Iterable.<module:engine/view/treewalker~TreeWalkerValue>}\n  */\n\n\n\t_createClass(Range, [{\n\t\tkey: Symbol.iterator,\n\t\tvalue: regeneratorRuntime.mark(function value() {\n\t\t\treturn regeneratorRuntime.wrap(function value$(_context) {\n\t\t\t\twhile (1) {\n\t\t\t\t\tswitch (_context.prev = _context.next) {\n\t\t\t\t\t\tcase 0:\n\t\t\t\t\t\t\treturn _context.delegateYield(new _treewalker2.default({ boundaries: this, ignoreElementEnd: true }), 't0', 1);\n\n\t\t\t\t\t\tcase 1:\n\t\t\t\t\t\tcase 'end':\n\t\t\t\t\t\t\treturn _context.stop();\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}, value, this);\n\t\t})\n\n\t\t/**\n   * Returns whether the range is collapsed, that is it start and end positions are equal.\n   *\n   * @type {Boolean}\n   */\n\n\t}, {\n\t\tkey: 'getEnlarged',\n\n\n\t\t/**\n   * Creates a maximal range that has the same content as this range but is expanded in both ways (at the beginning\n   * and at the end).\n   *\n   * For example:\n   *\n   * \t\t<p>Foo</p><p><b>{Bar}</b></p> -> <p>Foo</p>[<p><b>Bar</b>]</p>\n   * \t\t<p><b>foo</b>{bar}<span></span></p> -> <p><b>foo[</b>bar<span></span>]</p>\n   *\n   * Note that in the sample above:\n   *  - `<p>` have type of {@link module:engine/view/containerelement~ContainerElement},\n   *  - `<b>` have type of {@link module:engine/view/attributeelement~AttributeElement},\n   *  - `<span>` have type of {@link module:engine/view/uielement~UIElement}.\n   *\n   * @returns {module:engine/view/range~Range} Enlarged range.\n   */\n\t\tvalue: function getEnlarged() {\n\t\t\tvar start = this.start.getLastMatchingPosition(enlargeShrinkSkip, { direction: 'backward' });\n\t\t\tvar end = this.end.getLastMatchingPosition(enlargeShrinkSkip);\n\n\t\t\t// Fix positions, in case if they are in Text node.\n\t\t\tif (start.parent.is('text') && start.isAtStart) {\n\t\t\t\tstart = _position2.default.createBefore(start.parent);\n\t\t\t}\n\n\t\t\tif (end.parent.is('text') && end.isAtEnd) {\n\t\t\t\tend = _position2.default.createAfter(end.parent);\n\t\t\t}\n\n\t\t\treturn new Range(start, end);\n\t\t}\n\n\t\t/**\n   * Creates a minimum range that has the same content as this range but is trimmed in both ways (at the beginning\n   * and at the end).\n   *\n   * For example:\n   *\n   * \t\t<p>Foo</p>[<p><b>Bar</b>]</p> -> <p>Foo</p><p><b>{Bar}</b></p>\n   * \t\t<p><b>foo[</b>bar<span></span>]</p> -> <p><b>foo</b>{bar}<span></span></p>\n   *\n   * Note that in the sample above:\n   *  - `<p>` have type of {@link module:engine/view/containerelement~ContainerElement},\n   *  - `<b>` have type of {@link module:engine/view/attributeelement~AttributeElement},\n   *  - `<span>` have type of {@link module:engine/view/uielement~UIElement}.\n   *\n   * @returns {module:engine/view/range~Range} Shrink range.\n   */\n\n\t}, {\n\t\tkey: 'getTrimmed',\n\t\tvalue: function getTrimmed() {\n\t\t\tvar start = this.start.getLastMatchingPosition(enlargeShrinkSkip);\n\t\t\tvar end = this.end.getLastMatchingPosition(enlargeShrinkSkip, { direction: 'backward' });\n\t\t\tvar nodeAfterStart = start.nodeAfter;\n\t\t\tvar nodeBeforeEnd = end.nodeBefore;\n\n\t\t\t// Because TreeWalker prefers positions next to text node, we need to move them manually into these text nodes.\n\t\t\tif (nodeAfterStart && nodeAfterStart.is('text')) {\n\t\t\t\tstart = new _position2.default(nodeAfterStart, 0);\n\t\t\t}\n\n\t\t\tif (nodeBeforeEnd && nodeBeforeEnd.is('text')) {\n\t\t\t\tend = new _position2.default(nodeBeforeEnd, nodeBeforeEnd.data.length);\n\t\t\t}\n\n\t\t\treturn new Range(start, end);\n\t\t}\n\n\t\t/**\n   * Two ranges are equal if their start and end positions are equal.\n   *\n   * @param {module:engine/view/range~Range} otherRange Range to compare with.\n   * @returns {Boolean} `true` if ranges are equal, `false` otherwise\n   */\n\n\t}, {\n\t\tkey: 'isEqual',\n\t\tvalue: function isEqual(otherRange) {\n\t\t\treturn this == otherRange || this.start.isEqual(otherRange.start) && this.end.isEqual(otherRange.end);\n\t\t}\n\n\t\t/**\n   * Checks whether this range contains given {@link module:engine/view/position~Position position}.\n   *\n   * @param {module:engine/view/position~Position} position Position to check.\n   * @returns {Boolean} `true` if given {@link module:engine/view/position~Position position} is contained in this range, `false` otherwise.\n   */\n\n\t}, {\n\t\tkey: 'containsPosition',\n\t\tvalue: function containsPosition(position) {\n\t\t\treturn position.isAfter(this.start) && position.isBefore(this.end);\n\t\t}\n\n\t\t/**\n   * Checks whether this range contains given {@link module:engine/view/range~Range range}.\n   *\n   * @param {module:engine/view/range~Range} otherRange Range to check.\n   * @returns {Boolean} `true` if given {@link module:engine/view/range~Range range} boundaries are contained by this range, `false`\n   * otherwise.\n   */\n\n\t}, {\n\t\tkey: 'containsRange',\n\t\tvalue: function containsRange(otherRange) {\n\t\t\treturn this.containsPosition(otherRange.start) && this.containsPosition(otherRange.end);\n\t\t}\n\n\t\t/**\n   * Computes which part(s) of this {@link module:engine/view/range~Range range} is not a part of given\n   * {@link module:engine/view/range~Range range}.\n   * Returned array contains zero, one or two {@link module:engine/view/range~Range ranges}.\n   *\n   * Examples:\n   *\n   *\t\tlet foo = new Text( 'foo' );\n   *\t\tlet img = new ContainerElement( 'img' );\n   *\t\tlet bar = new Text( 'bar' );\n   *\t\tlet p = new ContainerElement( 'p', null, [ foo, img, bar ] );\n   *\n   *\t\tlet range = new Range( new Position( foo, 2 ), new Position( bar, 1 ); // \"o\", img, \"b\" are in range.\n   *\t\tlet otherRange = new Range( new Position( foo, 1 ), new Position( bar, 2 ); \"oo\", img, \"ba\" are in range.\n   *\t\tlet transformed = range.getDifference( otherRange );\n   *\t\t// transformed array has no ranges because `otherRange` contains `range`\n   *\n   *\t\totherRange = new Range( new Position( foo, 1 ), new Position( p, 2 ); // \"oo\", img are in range.\n   *\t\ttransformed = range.getDifference( otherRange );\n   *\t\t// transformed array has one range: from ( p, 2 ) to ( bar, 1 )\n   *\n   *\t\totherRange = new Range( new Position( p, 1 ), new Position( p, 2 ) ); // img is in range.\n   *\t\ttransformed = range.getDifference( otherRange );\n   *\t\t// transformed array has two ranges: from ( foo, 1 ) to ( p, 1 ) and from ( p, 2 ) to ( bar, 1 )\n   *\n   * @param {module:engine/view/range~Range} otherRange Range to differentiate against.\n   * @returns {Array.<module:engine/view/range~Range>} The difference between ranges.\n   */\n\n\t}, {\n\t\tkey: 'getDifference',\n\t\tvalue: function getDifference(otherRange) {\n\t\t\tvar ranges = [];\n\n\t\t\tif (this.isIntersecting(otherRange)) {\n\t\t\t\t// Ranges intersect.\n\n\t\t\t\tif (this.containsPosition(otherRange.start)) {\n\t\t\t\t\t// Given range start is inside this range. This means that we have to\n\t\t\t\t\t// add shrunken range - from the start to the middle of this range.\n\t\t\t\t\tranges.push(new Range(this.start, otherRange.start));\n\t\t\t\t}\n\n\t\t\t\tif (this.containsPosition(otherRange.end)) {\n\t\t\t\t\t// Given range end is inside this range. This means that we have to\n\t\t\t\t\t// add shrunken range - from the middle of this range to the end.\n\t\t\t\t\tranges.push(new Range(otherRange.end, this.end));\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\t// Ranges do not intersect, return the original range.\n\t\t\t\tranges.push(Range.createFromRange(this));\n\t\t\t}\n\n\t\t\treturn ranges;\n\t\t}\n\n\t\t/**\n   * Returns an intersection of this {@link module:engine/view/range~Range range} and given {@link module:engine/view/range~Range range}.\n   * Intersection is a common part of both of those ranges. If ranges has no common part, returns `null`.\n   *\n   * Examples:\n   *\n   *\t\tlet foo = new Text( 'foo' );\n   *\t\tlet img = new ContainerElement( 'img' );\n   *\t\tlet bar = new Text( 'bar' );\n   *\t\tlet p = new ContainerElement( 'p', null, [ foo, img, bar ] );\n   *\n   *\t\tlet range = new Range( new Position( foo, 2 ), new Position( bar, 1 ); // \"o\", img, \"b\" are in range.\n   *\t\tlet otherRange = new Range( new Position( foo, 1 ), new Position( p, 2 ); // \"oo\", img are in range.\n   *\t\tlet transformed = range.getIntersection( otherRange ); // range from ( foo, 1 ) to ( p, 2 ).\n   *\n   *\t\totherRange = new Range( new Position( bar, 1 ), new Position( bar, 3 ); \"ar\" is in range.\n   *\t\ttransformed = range.getIntersection( otherRange ); // null - no common part.\n   *\n   * @param {module:engine/view/range~Range} otherRange Range to check for intersection.\n   * @returns {module:engine/view/range~Range|null} A common part of given ranges or `null` if ranges have no common part.\n   */\n\n\t}, {\n\t\tkey: 'getIntersection',\n\t\tvalue: function getIntersection(otherRange) {\n\t\t\tif (this.isIntersecting(otherRange)) {\n\t\t\t\t// Ranges intersect, so a common range will be returned.\n\t\t\t\t// At most, it will be same as this range.\n\t\t\t\tvar commonRangeStart = this.start;\n\t\t\t\tvar commonRangeEnd = this.end;\n\n\t\t\t\tif (this.containsPosition(otherRange.start)) {\n\t\t\t\t\t// Given range start is inside this range. This means thaNt we have to\n\t\t\t\t\t// shrink common range to the given range start.\n\t\t\t\t\tcommonRangeStart = otherRange.start;\n\t\t\t\t}\n\n\t\t\t\tif (this.containsPosition(otherRange.end)) {\n\t\t\t\t\t// Given range end is inside this range. This means that we have to\n\t\t\t\t\t// shrink common range to the given range end.\n\t\t\t\t\tcommonRangeEnd = otherRange.end;\n\t\t\t\t}\n\n\t\t\t\treturn new Range(commonRangeStart, commonRangeEnd);\n\t\t\t}\n\n\t\t\t// Ranges do not intersect, so they do not have common part.\n\t\t\treturn null;\n\t\t}\n\n\t\t/**\n   * Creates a {@link module:engine/view/treewalker~TreeWalker TreeWalker} instance with this range as a boundary.\n   *\n   * @param {Object} options Object with configuration options. See {@link module:engine/view/treewalker~TreeWalker}.\n   * @param {module:engine/view/position~Position} [options.startPosition]\n   * @param {Boolean} [options.singleCharacters=false]\n   * @param {Boolean} [options.shallow=false]\n   * @param {Boolean} [options.ignoreElementEnd=false]\n   */\n\n\t}, {\n\t\tkey: 'getWalker',\n\t\tvalue: function getWalker() {\n\t\t\tvar options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n\n\t\t\toptions.boundaries = this;\n\n\t\t\treturn new _treewalker2.default(options);\n\t\t}\n\n\t\t/**\n   * Returns an iterator that iterates over all {@link module:engine/view/item~Item view items} that are in this range and returns\n   * them.\n   *\n   * This method uses {@link module:engine/view/treewalker~TreeWalker} with `boundaries` set to this range and `ignoreElementEnd` option\n   * set to `true`. However it returns only {@link module:engine/view/item~Item items},\n   * not {@link module:engine/view/treewalker~TreeWalkerValue}.\n   *\n   * You may specify additional options for the tree walker. See {@link module:engine/view/treewalker~TreeWalker} for\n   * a full list of available options.\n   *\n   * @param {Object} options Object with configuration options. See {@link module:engine/view/treewalker~TreeWalker}.\n   * @returns {Iterable.<module:engine/view/item~Item>}\n   */\n\n\t}, {\n\t\tkey: 'getItems',\n\t\tvalue: regeneratorRuntime.mark(function getItems() {\n\t\t\tvar options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n\n\t\t\tvar treeWalker, _iteratorNormalCompletion, _didIteratorError, _iteratorError, _iterator, _step, _value;\n\n\t\t\treturn regeneratorRuntime.wrap(function getItems$(_context2) {\n\t\t\t\twhile (1) {\n\t\t\t\t\tswitch (_context2.prev = _context2.next) {\n\t\t\t\t\t\tcase 0:\n\t\t\t\t\t\t\toptions.boundaries = this;\n\t\t\t\t\t\t\toptions.ignoreElementEnd = true;\n\n\t\t\t\t\t\t\ttreeWalker = new _treewalker2.default(options);\n\t\t\t\t\t\t\t_iteratorNormalCompletion = true;\n\t\t\t\t\t\t\t_didIteratorError = false;\n\t\t\t\t\t\t\t_iteratorError = undefined;\n\t\t\t\t\t\t\t_context2.prev = 6;\n\t\t\t\t\t\t\t_iterator = treeWalker[Symbol.iterator]();\n\n\t\t\t\t\t\tcase 8:\n\t\t\t\t\t\t\tif (_iteratorNormalCompletion = (_step = _iterator.next()).done) {\n\t\t\t\t\t\t\t\t_context2.next = 15;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t_value = _step.value;\n\t\t\t\t\t\t\t_context2.next = 12;\n\t\t\t\t\t\t\treturn _value.item;\n\n\t\t\t\t\t\tcase 12:\n\t\t\t\t\t\t\t_iteratorNormalCompletion = true;\n\t\t\t\t\t\t\t_context2.next = 8;\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase 15:\n\t\t\t\t\t\t\t_context2.next = 21;\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase 17:\n\t\t\t\t\t\t\t_context2.prev = 17;\n\t\t\t\t\t\t\t_context2.t0 = _context2['catch'](6);\n\t\t\t\t\t\t\t_didIteratorError = true;\n\t\t\t\t\t\t\t_iteratorError = _context2.t0;\n\n\t\t\t\t\t\tcase 21:\n\t\t\t\t\t\t\t_context2.prev = 21;\n\t\t\t\t\t\t\t_context2.prev = 22;\n\n\t\t\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\tcase 24:\n\t\t\t\t\t\t\t_context2.prev = 24;\n\n\t\t\t\t\t\t\tif (!_didIteratorError) {\n\t\t\t\t\t\t\t\t_context2.next = 27;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\tthrow _iteratorError;\n\n\t\t\t\t\t\tcase 27:\n\t\t\t\t\t\t\treturn _context2.finish(24);\n\n\t\t\t\t\t\tcase 28:\n\t\t\t\t\t\t\treturn _context2.finish(21);\n\n\t\t\t\t\t\tcase 29:\n\t\t\t\t\t\tcase 'end':\n\t\t\t\t\t\t\treturn _context2.stop();\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}, getItems, this, [[6, 17, 21, 29], [22,, 24, 28]]);\n\t\t})\n\n\t\t/**\n   * Returns an iterator that iterates over all {@link module:engine/view/position~Position positions} that are boundaries or\n   * contained in this range.\n   *\n   * This method uses {@link module:engine/view/treewalker~TreeWalker} with `boundaries` set to this range. However it returns only\n   * {@link module:engine/view/position~Position positions}, not {@link module:engine/view/treewalker~TreeWalkerValue}.\n   *\n   * You may specify additional options for the tree walker. See {@link module:engine/view/treewalker~TreeWalker} for\n   * a full list of available options.\n   *\n   * @param {Object} options Object with configuration options. See {@link module:engine/view/treewalker~TreeWalker}.\n   * @returns {Iterable.<module:engine/view/position~Position>}\n   */\n\n\t}, {\n\t\tkey: 'getPositions',\n\t\tvalue: regeneratorRuntime.mark(function getPositions() {\n\t\t\tvar options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n\n\t\t\tvar treeWalker, _iteratorNormalCompletion2, _didIteratorError2, _iteratorError2, _iterator2, _step2, _value2;\n\n\t\t\treturn regeneratorRuntime.wrap(function getPositions$(_context3) {\n\t\t\t\twhile (1) {\n\t\t\t\t\tswitch (_context3.prev = _context3.next) {\n\t\t\t\t\t\tcase 0:\n\t\t\t\t\t\t\toptions.boundaries = this;\n\n\t\t\t\t\t\t\ttreeWalker = new _treewalker2.default(options);\n\t\t\t\t\t\t\t_context3.next = 4;\n\t\t\t\t\t\t\treturn treeWalker.position;\n\n\t\t\t\t\t\tcase 4:\n\t\t\t\t\t\t\t_iteratorNormalCompletion2 = true;\n\t\t\t\t\t\t\t_didIteratorError2 = false;\n\t\t\t\t\t\t\t_iteratorError2 = undefined;\n\t\t\t\t\t\t\t_context3.prev = 7;\n\t\t\t\t\t\t\t_iterator2 = treeWalker[Symbol.iterator]();\n\n\t\t\t\t\t\tcase 9:\n\t\t\t\t\t\t\tif (_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done) {\n\t\t\t\t\t\t\t\t_context3.next = 16;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t_value2 = _step2.value;\n\t\t\t\t\t\t\t_context3.next = 13;\n\t\t\t\t\t\t\treturn _value2.nextPosition;\n\n\t\t\t\t\t\tcase 13:\n\t\t\t\t\t\t\t_iteratorNormalCompletion2 = true;\n\t\t\t\t\t\t\t_context3.next = 9;\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase 16:\n\t\t\t\t\t\t\t_context3.next = 22;\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase 18:\n\t\t\t\t\t\t\t_context3.prev = 18;\n\t\t\t\t\t\t\t_context3.t0 = _context3['catch'](7);\n\t\t\t\t\t\t\t_didIteratorError2 = true;\n\t\t\t\t\t\t\t_iteratorError2 = _context3.t0;\n\n\t\t\t\t\t\tcase 22:\n\t\t\t\t\t\t\t_context3.prev = 22;\n\t\t\t\t\t\t\t_context3.prev = 23;\n\n\t\t\t\t\t\t\tif (!_iteratorNormalCompletion2 && _iterator2.return) {\n\t\t\t\t\t\t\t\t_iterator2.return();\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\tcase 25:\n\t\t\t\t\t\t\t_context3.prev = 25;\n\n\t\t\t\t\t\t\tif (!_didIteratorError2) {\n\t\t\t\t\t\t\t\t_context3.next = 28;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\tthrow _iteratorError2;\n\n\t\t\t\t\t\tcase 28:\n\t\t\t\t\t\t\treturn _context3.finish(25);\n\n\t\t\t\t\t\tcase 29:\n\t\t\t\t\t\t\treturn _context3.finish(22);\n\n\t\t\t\t\t\tcase 30:\n\t\t\t\t\t\tcase 'end':\n\t\t\t\t\t\t\treturn _context3.stop();\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}, getPositions, this, [[7, 18, 22, 30], [23,, 25, 29]]);\n\t\t})\n\n\t\t/**\n   * Checks and returns whether this range intersects with given range.\n   *\n   * @param {module:engine/view/range~Range} otherRange Range to compare with.\n   * @returns {Boolean} True if ranges intersect.\n   */\n\n\t}, {\n\t\tkey: 'isIntersecting',\n\t\tvalue: function isIntersecting(otherRange) {\n\t\t\treturn this.start.isBefore(otherRange.end) && this.end.isAfter(otherRange.start);\n\t\t}\n\n\t\t/**\n   * Creates a range from given parents and offsets.\n   *\n   * @param {module:engine/view/element~Element} startElement Start position parent element.\n   * @param {Number} startOffset Start position offset.\n   * @param {module:engine/view/element~Element} endElement End position parent element.\n   * @param {Number} endOffset End position offset.\n   * @returns {module:engine/view/range~Range} Created range.\n   */\n\n\t}, {\n\t\tkey: 'isCollapsed',\n\t\tget: function get() {\n\t\t\treturn this.start.isEqual(this.end);\n\t\t}\n\n\t\t/**\n   * Returns whether this range is flat, that is if {@link module:engine/view/range~Range#start start} position and\n   * {@link module:engine/view/range~Range#end end} position are in the same {@link module:engine/view/position~Position#parent parent}.\n   *\n   * @type {Boolean}\n   */\n\n\t}, {\n\t\tkey: 'isFlat',\n\t\tget: function get() {\n\t\t\treturn this.start.parent === this.end.parent;\n\t\t}\n\n\t\t/**\n   * Range root element.\n   *\n   * @type {module:engine/view/element~Element|module:engine/view/documentfragment~DocumentFragment}\n   */\n\n\t}, {\n\t\tkey: 'root',\n\t\tget: function get() {\n\t\t\treturn this.start.root;\n\t\t}\n\t}], [{\n\t\tkey: 'createFromParentsAndOffsets',\n\t\tvalue: function createFromParentsAndOffsets(startElement, startOffset, endElement, endOffset) {\n\t\t\treturn new this(new _position2.default(startElement, startOffset), new _position2.default(endElement, endOffset));\n\t\t}\n\n\t\t/**\n   * Creates and returns a new instance of Range which is equal to passed range.\n   *\n   * @param {module:engine/view/range~Range} range Range to clone.\n   * @returns {module:engine/view/range~Range}\n   */\n\n\t}, {\n\t\tkey: 'createFromRange',\n\t\tvalue: function createFromRange(range) {\n\t\t\treturn new this(range.start, range.end);\n\t\t}\n\n\t\t/**\n   * Creates a new range, spreading from specified {@link module:engine/view/position~Position position} to a position moved by\n   * given `shift`. If `shift` is a negative value, shifted position is treated as the beginning of the range.\n   *\n   * @param {module:engine/view/position~Position} position Beginning of the range.\n   * @param {Number} shift How long the range should be.\n   * @returns {module:engine/view/range~Range}\n   */\n\n\t}, {\n\t\tkey: 'createFromPositionAndShift',\n\t\tvalue: function createFromPositionAndShift(position, shift) {\n\t\t\tvar start = position;\n\t\t\tvar end = position.getShiftedBy(shift);\n\n\t\t\treturn shift > 0 ? new this(start, end) : new this(end, start);\n\t\t}\n\n\t\t/**\n   * Creates a range inside an {@link module:engine/view/element~Element element} which starts before the first child of\n   * that element and ends after the last child of that element.\n   *\n   * @param {module:engine/view/element~Element} element Element which is a parent for the range.\n   * @returns {module:engine/view/range~Range}\n   */\n\n\t}, {\n\t\tkey: 'createIn',\n\t\tvalue: function createIn(element) {\n\t\t\treturn this.createFromParentsAndOffsets(element, 0, element, element.childCount);\n\t\t}\n\n\t\t/**\n   * Creates a range that starts before given {@link module:engine/view/item~Item view item} and ends after it.\n   *\n   * @param {module:engine/view/item~Item} item\n   * @returns {module:engine/view/range~Range}\n   */\n\n\t}, {\n\t\tkey: 'createOn',\n\t\tvalue: function createOn(item) {\n\t\t\treturn this.createFromPositionAndShift(_position2.default.createBefore(item), 1);\n\t\t}\n\t}]);\n\n\treturn Range;\n}();\n\n// Function used by getEnlagred and getShrinked methods.\n\n\nexports.default = Range;\nfunction enlargeShrinkSkip(value) {\n\tif (value.item.is('attributeElement') || value.item.is('uiElement')) {\n\t\treturn true;\n\t}\n\n\treturn false;\n}\n\n/***/ }),\n/* 34 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * The base implementation of `_.slice` without an iteratee call guard.\n *\n * @private\n * @param {Array} array The array to slice.\n * @param {number} [start=0] The start position.\n * @param {number} [end=array.length] The end position.\n * @returns {Array} Returns the slice of `array`.\n */\nfunction baseSlice(array, start, end) {\n  var index = -1,\n      length = array.length;\n\n  if (start < 0) {\n    start = -start > length ? 0 : length + start;\n  }\n  end = end > length ? length : end;\n  if (end < 0) {\n    end += length;\n  }\n  length = start > end ? 0 : end - start >>> 0;\n  start >>>= 0;\n\n  var result = Array(length);\n  while (++index < length) {\n    result[index] = array[index + start];\n  }\n  return result;\n}\n\nexports.default = baseSlice;\n\n/***/ }),\n/* 35 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/** Used as references for various `Number` constants. */\nvar MAX_SAFE_INTEGER = 9007199254740991;\n\n/** Used to detect unsigned integer values. */\nvar reIsUint = /^(?:0|[1-9]\\d*)$/;\n\n/**\n * Checks if `value` is a valid array-like index.\n *\n * @private\n * @param {*} value The value to check.\n * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.\n * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.\n */\nfunction isIndex(value, length) {\n  length = length == null ? MAX_SAFE_INTEGER : length;\n  return !!length && (typeof value == 'number' || reIsUint.test(value)) && value > -1 && value % 1 == 0 && value < length;\n}\n\nexports.default = isIndex;\n\n/***/ }),\n/* 36 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _operation = __webpack_require__(32);\n\nvar _operation2 = _interopRequireDefault(_operation);\n\nvar _position = __webpack_require__(1);\n\nvar _position2 = _interopRequireDefault(_position);\n\nvar _nodelist = __webpack_require__(69);\n\nvar _nodelist2 = _interopRequireDefault(_nodelist);\n\nvar _removeoperation = __webpack_require__(37);\n\nvar _removeoperation2 = _interopRequireDefault(_removeoperation);\n\nvar _writer = __webpack_require__(28);\n\nvar _writer2 = _interopRequireDefault(_writer);\n\nvar _text = __webpack_require__(23);\n\nvar _text2 = _interopRequireDefault(_text);\n\nvar _element = __webpack_require__(5);\n\nvar _element2 = _interopRequireDefault(_element);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _toConsumableArray(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } else { return Array.from(arr); } }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module engine/model/operation/insertoperation\n */\n\n/**\n * Operation to insert one or more nodes at given position in the model.\n *\n * @extends module:engine/model/operation/operation~Operation\n */\nvar InsertOperation = function (_Operation) {\n\t_inherits(InsertOperation, _Operation);\n\n\t/**\n  * Creates an insert operation.\n  *\n  * @param {module:engine/model/position~Position} position Position of insertion.\n  * @param {module:engine/model/node~NodeSet} nodes The list of nodes to be inserted.\n  * @param {Number} baseVersion {@link module:engine/model/document~Document#version} on which operation can be applied.\n  */\n\tfunction InsertOperation(position, nodes, baseVersion) {\n\t\t_classCallCheck(this, InsertOperation);\n\n\t\t/**\n   * Position of insertion.\n   *\n   * @readonly\n   * @member {module:engine/model/position~Position} module:engine/model/operation/insertoperation~InsertOperation#position\n   */\n\t\tvar _this = _possibleConstructorReturn(this, (InsertOperation.__proto__ || Object.getPrototypeOf(InsertOperation)).call(this, baseVersion));\n\n\t\t_this.position = _position2.default.createFromPosition(position);\n\n\t\t/**\n   * List of nodes to insert.\n   *\n   * @readonly\n   * @member {module:engine/model/nodelist~NodeList} module:engine/model/operation/insertoperation~InsertOperation#nodeList\n   */\n\t\t_this.nodes = new _nodelist2.default((0, _writer.normalizeNodes)(nodes));\n\t\treturn _this;\n\t}\n\n\t/**\n  * @inheritDoc\n  */\n\n\n\t_createClass(InsertOperation, [{\n\t\tkey: 'clone',\n\n\n\t\t/**\n   * @inheritDoc\n   * @returns {module:engine/model/operation/insertoperation~InsertOperation}\n   */\n\t\tvalue: function clone() {\n\t\t\tvar nodes = new _nodelist2.default([].concat(_toConsumableArray(this.nodes)).map(function (node) {\n\t\t\t\treturn node.clone(true);\n\t\t\t}));\n\n\t\t\treturn new InsertOperation(this.position, nodes, this.baseVersion);\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   * @returns {module:engine/model/operation/removeoperation~RemoveOperation}\n   */\n\n\t}, {\n\t\tkey: 'getReversed',\n\t\tvalue: function getReversed() {\n\t\t\treturn new _removeoperation2.default(this.position, this.nodes.maxOffset, this.baseVersion + 1);\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: '_execute',\n\t\tvalue: function _execute() {\n\t\t\t// What happens here is that we want original nodes be passed to writer because we want original nodes\n\t\t\t// to be inserted to the model. But in InsertOperation, we want to keep those nodes as they were added\n\t\t\t// to the operation, not modified. For example, text nodes can get merged or cropped while Elements can\n\t\t\t// get children. It is important that InsertOperation has the copy of original nodes in intact state.\n\t\t\tvar originalNodes = this.nodes;\n\t\t\tthis.nodes = new _nodelist2.default([].concat(_toConsumableArray(originalNodes)).map(function (node) {\n\t\t\t\treturn node.clone(true);\n\t\t\t}));\n\n\t\t\tvar range = _writer2.default.insert(this.position, originalNodes);\n\n\t\t\treturn { range: range };\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: 'type',\n\t\tget: function get() {\n\t\t\treturn 'insert';\n\t\t}\n\t}], [{\n\t\tkey: 'fromJSON',\n\n\n\t\t/**\n   * Creates `InsertOperation` object from deserilized object, i.e. from parsed JSON string.\n   *\n   * @param {Object} json Deserialized JSON object.\n   * @param {module:engine/model/document~Document} document Document on which this operation will be applied.\n   * @returns {module:engine/model/operation/insertoperation~InsertOperation}\n   */\n\t\tvalue: function fromJSON(json, document) {\n\t\t\tvar children = [];\n\n\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\tvar _didIteratorError = false;\n\t\t\tvar _iteratorError = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator = json.nodes[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\tvar child = _step.value;\n\n\t\t\t\t\tif (child.name) {\n\t\t\t\t\t\t// If child has name property, it is an Element.\n\t\t\t\t\t\tchildren.push(_element2.default.fromJSON(child));\n\t\t\t\t\t} else {\n\t\t\t\t\t\t// Otherwise, it is a Text node.\n\t\t\t\t\t\tchildren.push(_text2.default.fromJSON(child));\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError = true;\n\t\t\t\t_iteratorError = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn new InsertOperation(_position2.default.fromJSON(json.position, document), children, json.baseVersion);\n\t\t}\n\t}, {\n\t\tkey: 'className',\n\t\tget: function get() {\n\t\t\treturn 'engine.model.operation.InsertOperation';\n\t\t}\n\t}]);\n\n\treturn InsertOperation;\n}(_operation2.default);\n\nexports.default = InsertOperation;\n\n/***/ }),\n/* 37 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if (\"value\" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };\n\nvar _moveoperation = __webpack_require__(27);\n\nvar _moveoperation2 = _interopRequireDefault(_moveoperation);\n\nvar _position = __webpack_require__(1);\n\nvar _position2 = _interopRequireDefault(_position);\n\nvar _element = __webpack_require__(5);\n\nvar _element2 = _interopRequireDefault(_element);\n\nvar _reinsertoperation = __webpack_require__(112);\n\nvar _reinsertoperation2 = _interopRequireDefault(_reinsertoperation);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module engine/model/operation/removeoperation\n */\n\n/**\n * Operation to remove a range of nodes.\n */\nvar RemoveOperation = function (_MoveOperation) {\n\t_inherits(RemoveOperation, _MoveOperation);\n\n\t/**\n  * Creates a remove operation.\n  *\n  * @param {module:engine/model/position~Position} position Position before the first {@link module:engine/model/item~Item model item} to\n  * remove.\n  * @param {Number} howMany Offset size of removed range. {@link module:engine/model/item~Item Model items} will be removed starting\n  * from `sourcePosition`, up to a `sourcePosition` with offset shifted by `howMany`.\n  * @param {Number} baseVersion {@link module:engine/model/document~Document#version} on which operation can be applied.\n  */\n\tfunction RemoveOperation(position, howMany, baseVersion) {\n\t\t_classCallCheck(this, RemoveOperation);\n\n\t\tvar graveyard = position.root.document.graveyard;\n\t\tvar graveyardPosition = new _position2.default(graveyard, [graveyard.maxOffset, 0]);\n\n\t\treturn _possibleConstructorReturn(this, (RemoveOperation.__proto__ || Object.getPrototypeOf(RemoveOperation)).call(this, position, howMany, graveyardPosition, baseVersion));\n\t}\n\n\t/**\n  * @inheritDoc\n  */\n\n\n\t_createClass(RemoveOperation, [{\n\t\tkey: 'getReversed',\n\n\n\t\t/**\n   * @inheritDoc\n   * @returns {module:engine/model/operation/reinsertoperation~ReinsertOperation}\n   */\n\t\tvalue: function getReversed() {\n\t\t\treturn new _reinsertoperation2.default(this.targetPosition, this.howMany, this.sourcePosition, this.baseVersion + 1);\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   * @returns {module:engine/model/operation/removeoperation~RemoveOperation}\n   */\n\n\t}, {\n\t\tkey: 'clone',\n\t\tvalue: function clone() {\n\t\t\tvar removeOperation = new RemoveOperation(this.sourcePosition, this.howMany, this.baseVersion);\n\t\t\tremoveOperation.targetPosition = _position2.default.createFromPosition(this.targetPosition);\n\n\t\t\treturn removeOperation;\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: '_execute',\n\t\tvalue: function _execute() {\n\t\t\t// Insert \"holder\" element in graveyard root, if the operation needs it.\n\t\t\tif (this._needsHolderElement) {\n\t\t\t\tvar graveyard = this.targetPosition.root;\n\t\t\t\tvar holderElement = new _element2.default('$graveyardHolder');\n\n\t\t\t\tgraveyard.insertChildren(this._holderElementOffset, holderElement);\n\n\t\t\t\t// If the operation removes nodes that are already in graveyard, it may happen that\n\t\t\t\t// the operation's source position is invalidated by inserting new holder element into the graveyard.\n\t\t\t\t// If that's the case, we need to fix source position path.\n\t\t\t\tif (this.sourcePosition.root == graveyard && this.sourcePosition.path[0] >= this._holderElementOffset) {\n\t\t\t\t\tthis.sourcePosition.path[0]++;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Then, execute as a move operation.\n\t\t\treturn _get(RemoveOperation.prototype.__proto__ || Object.getPrototypeOf(RemoveOperation.prototype), '_execute', this).call(this);\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: 'type',\n\t\tget: function get() {\n\t\t\treturn 'remove';\n\t\t}\n\n\t\t/**\n   * Offset of the graveyard \"holder\" element, in which nodes removed by this operation are stored.\n   *\n   * @protected\n   * @type {Number}\n   */\n\n\t}, {\n\t\tkey: '_holderElementOffset',\n\t\tget: function get() {\n\t\t\treturn this.targetPosition.path[0];\n\t\t}\n\n\t\t/**\n   * Sets {@link module:engine/model/operation/removeoperation~RemoveOperation#_holderElementOffset}.\n   *\n   * @protected\n   * @param {Number} offset\n   */\n\t\t,\n\t\tset: function set(offset) {\n\t\t\tthis.targetPosition.path[0] = offset;\n\t\t}\n\n\t\t/**\n   * Flag informing whether this operation should insert \"holder\" element (`true`) or should move removed nodes\n   * into existing \"holder\" element (`false`).\n   *\n   * It is `true` for each `RemoveOperation` that is the first `RemoveOperation` in it's delta that points to given holder element.\n   * This way only one `RemoveOperation` in given delta will insert \"holder\" element.\n   *\n   * @protected\n   * @type {Boolean}\n   */\n\n\t}, {\n\t\tkey: '_needsHolderElement',\n\t\tget: function get() {\n\t\t\tif (this.delta) {\n\t\t\t\t// Let's look up all operations from this delta in the same order as they are in the delta.\n\t\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\t\tvar _didIteratorError = false;\n\t\t\t\tvar _iteratorError = undefined;\n\n\t\t\t\ttry {\n\t\t\t\t\tfor (var _iterator = this.delta.operations[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\t\tvar operation = _step.value;\n\n\t\t\t\t\t\t// We are interested only in `RemoveOperation`s.\n\t\t\t\t\t\tif (operation instanceof RemoveOperation) {\n\t\t\t\t\t\t\t// If the first `RemoveOperation` in the delta is this operation, this operation\n\t\t\t\t\t\t\t// needs to insert holder element in the graveyard.\n\t\t\t\t\t\t\tif (operation == this) {\n\t\t\t\t\t\t\t\treturn true;\n\t\t\t\t\t\t\t} else if (operation._holderElementOffset == this._holderElementOffset) {\n\t\t\t\t\t\t\t\t// If there is a `RemoveOperation` in this delta that \"points\" to the same holder element offset,\n\t\t\t\t\t\t\t\t// that operation will already insert holder element at that offset. We should not create another holder.\n\t\t\t\t\t\t\t\treturn false;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t} catch (err) {\n\t\t\t\t\t_didIteratorError = true;\n\t\t\t\t\t_iteratorError = err;\n\t\t\t\t} finally {\n\t\t\t\t\ttry {\n\t\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t\t}\n\t\t\t\t\t} finally {\n\t\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// By default `RemoveOperation` needs holder element, so set it so, if the operation does not have delta.\n\t\t\treturn true;\n\t\t}\n\t}], [{\n\t\tkey: 'fromJSON',\n\n\n\t\t/**\n   * Creates `RemoveOperation` object from deserilized object, i.e. from parsed JSON string.\n   *\n   * @param {Object} json Deserialized JSON object.\n   * @param {module:engine/model/document~Document} document Document on which this operation will be applied.\n   * @returns {module:engine/model/operation/removeoperation~RemoveOperation}\n   */\n\t\tvalue: function fromJSON(json, document) {\n\t\t\tvar sourcePosition = _position2.default.fromJSON(json.sourcePosition, document);\n\n\t\t\tvar removeOp = new RemoveOperation(sourcePosition, json.howMany, json.baseVersion);\n\t\t\tremoveOp.targetPosition = _position2.default.fromJSON(json.targetPosition, document);\n\n\t\t\treturn removeOp;\n\t\t}\n\t}, {\n\t\tkey: 'className',\n\t\tget: function get() {\n\t\t\treturn 'engine.model.operation.RemoveOperation';\n\t\t}\n\t}]);\n\n\treturn RemoveOperation;\n}(_moveoperation2.default);\n\nexports.default = RemoveOperation;\n\n/***/ }),\n/* 38 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module engine/model/treewalker\n */\n\nvar _text = __webpack_require__(23);\n\nvar _text2 = _interopRequireDefault(_text);\n\nvar _textproxy = __webpack_require__(56);\n\nvar _textproxy2 = _interopRequireDefault(_textproxy);\n\nvar _element = __webpack_require__(5);\n\nvar _element2 = _interopRequireDefault(_element);\n\nvar _position = __webpack_require__(1);\n\nvar _position2 = _interopRequireDefault(_position);\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * Position iterator class. It allows to iterate forward and backward over the document.\n */\nvar TreeWalker = function () {\n\t/**\n  * Creates a range iterator. All parameters are optional, but you have to specify either `boundaries` or `startPosition`.\n  *\n  * @constructor\n  * @param {Object} [options={}] Object with configuration.\n  * @param {'forward'|'backward'} [options.direction='forward'] Walking direction.\n  * @param {module:engine/model/range~Range} [options.boundaries=null] Range to define boundaries of the iterator.\n  * @param {module:engine/model/position~Position} [options.startPosition] Starting position.\n  * @param {Boolean} [options.singleCharacters=false] Flag indicating whether all consecutive characters with the same attributes\n  * should be returned one by one as multiple {@link module:engine/model/textproxy~TextProxy} (`true`) objects or as one\n  * {@link module:engine/model/textproxy~TextProxy} (`false`).\n  * @param {Boolean} [options.shallow=false] Flag indicating whether iterator should enter elements or not. If the\n  * iterator is shallow child nodes of any iterated node will not be returned along with `elementEnd` tag.\n  * @param {Boolean} [options.ignoreElementEnd=false] Flag indicating whether iterator should ignore `elementEnd`\n  * tags. If the option is true walker will not return a parent node of start position. If this option is `true`\n  * each {@link module:engine/model/element~Element} will be returned once, while if the option is `false` they might be returned\n  * twice: for `'elementStart'` and `'elementEnd'`.\n  */\n\tfunction TreeWalker() {\n\t\tvar options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n\n\t\t_classCallCheck(this, TreeWalker);\n\n\t\tif (!options.boundaries && !options.startPosition) {\n\t\t\t/**\n    * Neither boundaries nor starting position have been defined.\n    *\n    * @error tree-walker-no-start-position\n    */\n\t\t\tthrow new _ckeditorerror2.default('model-tree-walker-no-start-position: Neither boundaries nor starting position have been defined.');\n\t\t}\n\n\t\tvar direction = options.direction || 'forward';\n\n\t\tif (direction != 'forward' && direction != 'backward') {\n\t\t\tthrow new _ckeditorerror2.default('model-tree-walker-unknown-direction: Only `backward` and `forward` direction allowed.', { direction: direction });\n\t\t}\n\n\t\t/**\n   * Walking direction. Defaults `'forward'`.\n   *\n   * @readonly\n   * @member {'backward'|'forward'} module:engine/model/treewalker~TreeWalker#direction\n   */\n\t\tthis.direction = direction;\n\n\t\t/**\n   * Iterator boundaries.\n   *\n   * When the iterator is walking `'forward'` on the end of boundary or is walking `'backward'`\n   * on the start of boundary, then `{ done: true }` is returned.\n   *\n   * If boundaries are not defined they are set before first and after last child of the root node.\n   *\n   * @readonly\n   * @member {module:engine/model/range~Range} module:engine/model/treewalker~TreeWalker#boundaries\n   */\n\t\tthis.boundaries = options.boundaries || null;\n\n\t\t/**\n   * Iterator position. This is always static position, even if the initial position was a\n   * {@link module:engine/model/liveposition~LivePosition live position}. If start position is not defined then position depends\n   * on {@link #direction}. If direction is `'forward'` position starts form the beginning, when direction\n   * is `'backward'` position starts from the end.\n   *\n   * @readonly\n   * @member {module:engine/model/position~Position} module:engine/model/treewalker~TreeWalker#position\n   */\n\t\tif (options.startPosition) {\n\t\t\tthis.position = _position2.default.createFromPosition(options.startPosition);\n\t\t} else {\n\t\t\tthis.position = _position2.default.createFromPosition(this.boundaries[this.direction == 'backward' ? 'end' : 'start']);\n\t\t}\n\n\t\t/**\n   * Flag indicating whether all consecutive characters with the same attributes should be\n   * returned as one {@link module:engine/model/textproxy~TextProxy} (`true`) or one by one (`false`).\n   *\n   * @readonly\n   * @member {Boolean} module:engine/model/treewalker~TreeWalker#singleCharacters\n   */\n\t\tthis.singleCharacters = !!options.singleCharacters;\n\n\t\t/**\n   * Flag indicating whether iterator should enter elements or not. If the iterator is shallow child nodes of any\n   * iterated node will not be returned along with `elementEnd` tag.\n   *\n   * @readonly\n   * @member {Boolean} module:engine/model/treewalker~TreeWalker#shallow\n   */\n\t\tthis.shallow = !!options.shallow;\n\n\t\t/**\n   * Flag indicating whether iterator should ignore `elementEnd` tags. If the option is true walker will not\n   * return a parent node of the start position. If this option is `true` each {@link module:engine/model/element~Element} will\n   * be returned once, while if the option is `false` they might be returned twice:\n   * for `'elementStart'` and `'elementEnd'`.\n   *\n   * @readonly\n   * @member {Boolean} module:engine/model/treewalker~TreeWalker#ignoreElementEnd\n   */\n\t\tthis.ignoreElementEnd = !!options.ignoreElementEnd;\n\n\t\t/**\n   * Start boundary cached for optimization purposes.\n   *\n   * @private\n   * @member {module:engine/model/element~Element} module:engine/model/treewalker~TreeWalker#_boundaryStartParent\n   */\n\t\tthis._boundaryStartParent = this.boundaries ? this.boundaries.start.parent : null;\n\n\t\t/**\n   * End boundary cached for optimization purposes.\n   *\n   * @private\n   * @member {module:engine/model/element~Element} module:engine/model/treewalker~TreeWalker#_boundaryEndParent\n   */\n\t\tthis._boundaryEndParent = this.boundaries ? this.boundaries.end.parent : null;\n\n\t\t/**\n   * Parent of the most recently visited node. Cached for optimization purposes.\n   *\n   * @private\n   * @member {module:engine/model/element~Element|module:engine/model/documentfragment~DocumentFragment}\n   * module:engine/model/treewalker~TreeWalker#_visitedParent\n   */\n\t\tthis._visitedParent = this.position.parent;\n\t}\n\n\t/**\n  * Iterator interface.\n  */\n\n\n\t_createClass(TreeWalker, [{\n\t\tkey: Symbol.iterator,\n\t\tvalue: function value() {\n\t\t\treturn this;\n\t\t}\n\n\t\t/**\n   * Moves {@link #position} in the {@link #direction} skipping values as long as the callback function returns `true`.\n   *\n   * For example:\n   *\n   * \t\twalker.skip( value => value.type == 'text' ); // <paragraph>[]foo</paragraph> -> <paragraph>foo[]</paragraph>\n   * \t\twalker.skip( () => true ); // Move the position to the end: <paragraph>[]foo</paragraph> -> <paragraph>foo</paragraph>[]\n   * \t\twalker.skip( () => false ); // Do not move the position.\n   *\n   * @param {Function} skip Callback function. Gets {@link module:engine/model/treewalker~TreeWalkerValue} and should\n   * return `true` if the value should be skipped or `false` if not.\n   */\n\n\t}, {\n\t\tkey: 'skip',\n\t\tvalue: function skip(_skip) {\n\t\t\tvar done = void 0,\n\t\t\t    value = void 0,\n\t\t\t    prevPosition = void 0,\n\t\t\t    prevVisitedParent = void 0;\n\n\t\t\tdo {\n\t\t\t\tprevPosition = this.position;\n\t\t\t\tprevVisitedParent = this._visitedParent;\n\n\t\t\t\tvar _next2 = this.next();\n\n\t\t\t\tdone = _next2.done;\n\t\t\t\tvalue = _next2.value;\n\t\t\t} while (!done && _skip(value));\n\n\t\t\tif (!done) {\n\t\t\t\tthis.position = prevPosition;\n\t\t\t\tthis._visitedParent = prevVisitedParent;\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Iterator interface method.\n   * Detects walking direction and makes step forward or backward.\n   *\n   * @returns {Object} Object implementing iterator interface, returning information about taken step.\n   */\n\n\t}, {\n\t\tkey: 'next',\n\t\tvalue: function next() {\n\t\t\tif (this.direction == 'forward') {\n\t\t\t\treturn this._next();\n\t\t\t} else {\n\t\t\t\treturn this._previous();\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Makes a step forward in model. Moves the {@link #position} to the next position and returns the encountered value.\n   *\n   * @private\n   * @returns {Object}\n   * @returns {Boolean} return.done True if iterator is done.\n   * @returns {module:engine/model/treewalker~TreeWalkerValue} return.value Information about taken step.\n   */\n\n\t}, {\n\t\tkey: '_next',\n\t\tvalue: function _next() {\n\t\t\tvar previousPosition = this.position;\n\t\t\tvar position = _position2.default.createFromPosition(this.position);\n\t\t\tvar parent = this._visitedParent;\n\n\t\t\t// We are at the end of the root.\n\t\t\tif (parent.parent === null && position.offset === parent.maxOffset) {\n\t\t\t\treturn { done: true };\n\t\t\t}\n\n\t\t\t// We reached the walker boundary.\n\t\t\tif (parent === this._boundaryEndParent && position.offset == this.boundaries.end.offset) {\n\t\t\t\treturn { done: true };\n\t\t\t}\n\n\t\t\tvar node = position.textNode ? position.textNode : position.nodeAfter;\n\n\t\t\tif (node instanceof _element2.default) {\n\t\t\t\tif (!this.shallow) {\n\t\t\t\t\t// Manual operations on path internals for optimization purposes. Here and in the rest of the method.\n\t\t\t\t\tposition.path.push(0);\n\t\t\t\t\tthis._visitedParent = node;\n\t\t\t\t} else {\n\t\t\t\t\tposition.offset++;\n\t\t\t\t}\n\n\t\t\t\tthis.position = position;\n\n\t\t\t\treturn formatReturnValue('elementStart', node, previousPosition, position, 1);\n\t\t\t} else if (node instanceof _text2.default) {\n\t\t\t\tvar charactersCount = void 0,\n\t\t\t\t    offsetInTextNode = void 0;\n\n\t\t\t\tif (this.singleCharacters) {\n\t\t\t\t\tcharactersCount = 1;\n\t\t\t\t} else {\n\t\t\t\t\tvar offset = node.endOffset;\n\n\t\t\t\t\tif (this._boundaryEndParent == parent && this.boundaries.end.offset < offset) {\n\t\t\t\t\t\toffset = this.boundaries.end.offset;\n\t\t\t\t\t}\n\n\t\t\t\t\tcharactersCount = offset - position.offset;\n\t\t\t\t}\n\n\t\t\t\toffsetInTextNode = position.offset - node.startOffset;\n\n\t\t\t\tvar item = new _textproxy2.default(node, offsetInTextNode, charactersCount);\n\n\t\t\t\tposition.offset += charactersCount;\n\t\t\t\tthis.position = position;\n\n\t\t\t\treturn formatReturnValue('text', item, previousPosition, position, charactersCount);\n\t\t\t} else {\n\t\t\t\t// `node` is not set, we reached the end of current `parent`.\n\t\t\t\tposition.path.pop();\n\t\t\t\tposition.offset++;\n\t\t\t\tthis.position = position;\n\t\t\t\tthis._visitedParent = parent.parent;\n\n\t\t\t\tif (this.ignoreElementEnd) {\n\t\t\t\t\treturn this._next();\n\t\t\t\t} else {\n\t\t\t\t\treturn formatReturnValue('elementEnd', parent, previousPosition, position);\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Makes a step backward in model. Moves the {@link #position} to the previous position and returns the encountered value.\n   *\n   * @private\n   * @returns {Object}\n   * @returns {Boolean} return.done True if iterator is done.\n   * @returns {module:engine/model/treewalker~TreeWalkerValue} return.value Information about taken step.\n   */\n\n\t}, {\n\t\tkey: '_previous',\n\t\tvalue: function _previous() {\n\t\t\tvar previousPosition = this.position;\n\t\t\tvar position = _position2.default.createFromPosition(this.position);\n\t\t\tvar parent = this._visitedParent;\n\n\t\t\t// We are at the beginning of the root.\n\t\t\tif (parent.parent === null && position.offset === 0) {\n\t\t\t\treturn { done: true };\n\t\t\t}\n\n\t\t\t// We reached the walker boundary.\n\t\t\tif (parent == this._boundaryStartParent && position.offset == this.boundaries.start.offset) {\n\t\t\t\treturn { done: true };\n\t\t\t}\n\n\t\t\t// Get node just before current position\n\t\t\tvar node = position.textNode ? position.textNode : position.nodeBefore;\n\n\t\t\tif (node instanceof _element2.default) {\n\t\t\t\tposition.offset--;\n\n\t\t\t\tif (!this.shallow) {\n\t\t\t\t\tposition.path.push(node.maxOffset);\n\t\t\t\t\tthis.position = position;\n\t\t\t\t\tthis._visitedParent = node;\n\n\t\t\t\t\tif (this.ignoreElementEnd) {\n\t\t\t\t\t\treturn this._previous();\n\t\t\t\t\t} else {\n\t\t\t\t\t\treturn formatReturnValue('elementEnd', node, previousPosition, position);\n\t\t\t\t\t}\n\t\t\t\t} else {\n\t\t\t\t\tthis.position = position;\n\n\t\t\t\t\treturn formatReturnValue('elementStart', node, previousPosition, position, 1);\n\t\t\t\t}\n\t\t\t} else if (node instanceof _text2.default) {\n\t\t\t\tvar charactersCount = void 0,\n\t\t\t\t    offsetInTextNode = void 0;\n\n\t\t\t\tif (this.singleCharacters) {\n\t\t\t\t\tcharactersCount = 1;\n\t\t\t\t} else {\n\t\t\t\t\tvar offset = node.startOffset;\n\n\t\t\t\t\tif (this._boundaryStartParent == parent && this.boundaries.start.offset > offset) {\n\t\t\t\t\t\toffset = this.boundaries.start.offset;\n\t\t\t\t\t}\n\n\t\t\t\t\tcharactersCount = position.offset - offset;\n\t\t\t\t}\n\n\t\t\t\toffsetInTextNode = position.offset - node.startOffset;\n\n\t\t\t\tvar item = new _textproxy2.default(node, offsetInTextNode - charactersCount, charactersCount);\n\n\t\t\t\tposition.offset -= charactersCount;\n\t\t\t\tthis.position = position;\n\n\t\t\t\treturn formatReturnValue('text', item, previousPosition, position, charactersCount);\n\t\t\t} else {\n\t\t\t\t// `node` is not set, we reached the beginning of current `parent`.\n\t\t\t\tposition.path.pop();\n\t\t\t\tthis.position = position;\n\t\t\t\tthis._visitedParent = parent.parent;\n\n\t\t\t\treturn formatReturnValue('elementStart', parent, previousPosition, position, 1);\n\t\t\t}\n\t\t}\n\t}]);\n\n\treturn TreeWalker;\n}();\n\nexports.default = TreeWalker;\n\n\nfunction formatReturnValue(type, item, previousPosition, nextPosition, length) {\n\treturn {\n\t\tdone: false,\n\t\tvalue: {\n\t\t\ttype: type,\n\t\t\titem: item,\n\t\t\tpreviousPosition: previousPosition,\n\t\t\tnextPosition: nextPosition,\n\t\t\tlength: length\n\t\t}\n\t};\n}\n\n/**\n * Type of the step made by {@link module:engine/model/treewalker~TreeWalker}.\n * Possible values: `'elementStart'` if walker is at the beginning of a node, `'elementEnd'` if walker is at the end of node,\n * `'character'` if walker traversed over a character, or `'text'` if walker traversed over multiple characters (available in\n * character merging mode, see {@link module:engine/model/treewalker~TreeWalker#constructor}).\n *\n * @typedef {'elementStart'|'elementEnd'|'character'|'text'} module:engine/model/treewalker~TreeWalkerValueType\n */\n\n/**\n * Object returned by {@link module:engine/model/treewalker~TreeWalker} when traversing tree model.\n *\n * @typedef {Object} module:engine/model/treewalker~TreeWalkerValue\n * @property {module:engine/model/treewalker~TreeWalkerValueType} type\n * @property {module:engine/model/item~Item} item Item between old and new positions of {@link module:engine/model/treewalker~TreeWalker}.\n * @property {module:engine/model/position~Position} previousPosition Previous position of the iterator.\n * * Forward iteration: For `'elementEnd'` it is the last position inside the element. For all other types it is the\n * position before the item. Note that it is more efficient to use this position then calculate the position before\n * the node using {@link module:engine/model/position~Position.createBefore}. It is also more efficient to get the\n * position after node by shifting `previousPosition` by `length`, using {@link module:engine/model/position~Position#getShiftedBy},\n * then calculate the position using {@link module:engine/model/position~Position.createAfter}.\n * * Backward iteration: For `'elementStart'` it is the first position inside the element. For all other types it is\n * the position after item.\n * @property {module:engine/model/position~Position} nextPosition Next position of the iterator.\n * * Forward iteration: For `'elementStart'` it is the first position inside the element. For all other types it is\n * the position after the item.\n * * Backward iteration: For `'elementEnd'` it is last position inside element. For all other types it is the position\n * before the item.\n * @property {Number} [length] Length of the item. For `'elementStart'` and `'character'` it is 1. For `'text'` it is\n * the length of the text. For `'elementEnd'` it is undefined.\n */\n\n/**\n * Tree walking directions.\n *\n * @typedef {'forward'|'backward'} module:engine/view/treewalker~TreeWalkerDirection\n */\n\n/***/ }),\n/* 39 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if (\"value\" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };\n\nvar _element = __webpack_require__(20);\n\nvar _element2 = _interopRequireDefault(_element);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module engine/view/containerelement\n */\n\n/**\n * Containers are elements which define document structure. They define boundaries for\n * {@link module:engine/view/attributeelement~AttributeElement attributes}. They are mostly use for block elements like `<p>` or `<div>`.\n *\n * Editing engine does not define fixed HTML DTD. This is why the type of the {@link module:engine/view/element~Element} need to\n * be defined by the feature developer.\n *\n * Creating an element you should use `ContainerElement` class or {@link module:engine/view/attributeelement~AttributeElement}. This is\n * important to define the type of the element because of two reasons:\n *\n * Firstly, {@link module:engine/view/domconverter~DomConverter} needs the information what is an editable block to convert elements to\n * DOM properly. {@link module:engine/view/domconverter~DomConverter} will ensure that `ContainerElement` is editable and it is possible\n * to put caret inside it, even if the container is empty.\n *\n * Secondly, {@link module:engine/view/writer~writer view writer} uses this information.\n * Nodes {@link module:engine/view/writer~writer.breakAttributes breaking} and {@link module:engine/view/writer~writer.mergeAttributes\n * merging}\n * is performed only in a bounds of a container nodes.\n *\n * For instance if `<p>` is an container and `<b>` is attribute:\n *\n *\t\t<p><b>fo^o</b></p>\n *\n * {@link module:engine/view/writer~writer.breakAttributes breakAttributes} will create:\n *\n *\t\t<p><b>fo</b><b>o</b></p>\n *\n * There might be a need to mark `<span>` element as a container node, for example in situation when it will be a\n * container of an inline widget:\n *\n *\t\t<span color=\"red\">foobar</span>\t\t// attribute\n *\t\t<span data-widget>foobar</span>\t\t// container\n *\n * @extends module:engine/view/element~Element\n */\nvar ContainerElement = function (_Element) {\n  _inherits(ContainerElement, _Element);\n\n  /**\n   * Creates a container element.\n   *\n   * @see module:engine/view/element~Element\n   */\n  function ContainerElement(name, attrs, children) {\n    _classCallCheck(this, ContainerElement);\n\n    /**\n     * Returns block {@link module:engine/view/filler filler} offset or `null` if block filler is not needed.\n     *\n     * @method #getFillerOffset\n     * @returns {Number|null} Block filler offset or `null` if block filler is not needed.\n     */\n    var _this = _possibleConstructorReturn(this, (ContainerElement.__proto__ || Object.getPrototypeOf(ContainerElement)).call(this, name, attrs, children));\n\n    _this.getFillerOffset = getFillerOffset;\n    return _this;\n  }\n\n  /**\n   * @inheritDoc\n   */\n\n\n  _createClass(ContainerElement, [{\n    key: 'is',\n    value: function is(type) {\n      var name = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n\n      if (!name) {\n        return type == 'containerElement' || _get(ContainerElement.prototype.__proto__ || Object.getPrototypeOf(ContainerElement.prototype), 'is', this).call(this, type);\n      } else {\n        return type == 'containerElement' && name == this.name || _get(ContainerElement.prototype.__proto__ || Object.getPrototypeOf(ContainerElement.prototype), 'is', this).call(this, type, name);\n      }\n    }\n  }]);\n\n  return ContainerElement;\n}(_element2.default);\n\n// Returns block {@link module:engine/view/filler filler} offset or `null` if block filler is not needed.\n//\n// @returns {Number|null} Block filler offset or `null` if block filler is not needed.\n\n\nexports.default = ContainerElement;\nfunction getFillerOffset() {\n  /*jshint validthis:true */\n  return this.childCount === 0 ? 0 : null;\n}\n\n/***/ }),\n/* 40 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.toImageWidget = toImageWidget;\nexports.isImageWidget = isImageWidget;\nexports.isImage = isImage;\n\nvar _utils = __webpack_require__(119);\n\nvar _element = __webpack_require__(5);\n\nvar _element2 = _interopRequireDefault(_element);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module image/image/utils\n */\n\nvar imageSymbol = Symbol('isImage');\n\n/**\n * Converts given {@link module:engine/view/element~Element} to image widget:\n * * adds {@link module:engine/view/element~Element#setCustomProperty custom property} allowing to recognize image widget element,\n * * calls {@link module:image/widget/utils~widgetize widgetize} function with proper element's label creator.\n *\n * @param {module:engine/view/element~Element} viewElement\n * @param {String} label Element's label. It will be concatenated with image's `alt` attribute if one is present.\n * @returns {module:engine/view/element~Element}\n */\nfunction toImageWidget(viewElement, label) {\n  viewElement.setCustomProperty(imageSymbol, true);\n\n  return (0, _utils.widgetize)(viewElement, { label: labelCreator });\n\n  function labelCreator() {\n    var imgElement = viewElement.getChild(0);\n    var altText = imgElement.getAttribute('alt');\n\n    return altText ? altText + ' ' + label : label;\n  }\n}\n\n/**\n * Checks if given view element is an image widget.\n *\n * @param {module:engine/view/element~Element} viewElement\n * @returns {Boolean}\n */\nfunction isImageWidget(viewElement) {\n  return !!viewElement.getCustomProperty(imageSymbol) && (0, _utils.isWidget)(viewElement);\n}\n\n/**\n * Checks if provided modelElement is an instance of {@link module:engine/model/element~Element Element} and its name\n * is `image`.\n *\n * @param {module:engine/model/element~Element} modelElement\n * @returns {Boolean}\n */\nfunction isImage(modelElement) {\n  return modelElement instanceof _element2.default && modelElement.name == 'image';\n}\n\n/***/ }),\n/* 41 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = isIterable;\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/isiterable\n */\n\n/**\n * Checks if value implements iterator interface.\n *\n * @param {*} value The value to check.\n * @returns {Boolean} True if value implements iterator interface.\n */\nfunction isIterable(value) {\n  return !!(value && value[Symbol.iterator]);\n}\n\n/***/ }),\n/* 42 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _SetCache = __webpack_require__(81);\n\nvar _SetCache2 = _interopRequireDefault(_SetCache);\n\nvar _arrayIncludes = __webpack_require__(125);\n\nvar _arrayIncludes2 = _interopRequireDefault(_arrayIncludes);\n\nvar _arrayIncludesWith = __webpack_require__(126);\n\nvar _arrayIncludesWith2 = _interopRequireDefault(_arrayIncludesWith);\n\nvar _cacheHas = __webpack_require__(136);\n\nvar _cacheHas2 = _interopRequireDefault(_cacheHas);\n\nvar _createSet = __webpack_require__(441);\n\nvar _createSet2 = _interopRequireDefault(_createSet);\n\nvar _setToArray = __webpack_require__(93);\n\nvar _setToArray2 = _interopRequireDefault(_setToArray);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** Used as the size to enable large array optimizations. */\nvar LARGE_ARRAY_SIZE = 200;\n\n/**\n * The base implementation of `_.uniqBy` without support for iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new duplicate free array.\n */\nfunction baseUniq(array, iteratee, comparator) {\n  var index = -1,\n      includes = _arrayIncludes2.default,\n      length = array.length,\n      isCommon = true,\n      result = [],\n      seen = result;\n\n  if (comparator) {\n    isCommon = false;\n    includes = _arrayIncludesWith2.default;\n  } else if (length >= LARGE_ARRAY_SIZE) {\n    var set = iteratee ? null : (0, _createSet2.default)(array);\n    if (set) {\n      return (0, _setToArray2.default)(set);\n    }\n    isCommon = false;\n    includes = _cacheHas2.default;\n    seen = new _SetCache2.default();\n  } else {\n    seen = iteratee ? [] : result;\n  }\n  outer: while (++index < length) {\n    var value = array[index],\n        computed = iteratee ? iteratee(value) : value;\n\n    value = comparator || value !== 0 ? value : 0;\n    if (isCommon && computed === computed) {\n      var seenIndex = seen.length;\n      while (seenIndex--) {\n        if (seen[seenIndex] === computed) {\n          continue outer;\n        }\n      }\n      if (iteratee) {\n        seen.push(computed);\n      }\n      result.push(value);\n    } else if (!includes(seen, computed, comparator)) {\n      if (seen !== result) {\n        seen.push(computed);\n      }\n      result.push(value);\n    }\n  }\n  return result;\n}\n\nexports.default = baseUniq;\n\n/***/ }),\n/* 43 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; };\n\n/**\n * Checks if `value` is object-like. A value is object-like if it's not `null`\n * and has a `typeof` result of \"object\".\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is object-like, else `false`.\n * @example\n *\n * _.isObjectLike({});\n * // => true\n *\n * _.isObjectLike([1, 2, 3]);\n * // => true\n *\n * _.isObjectLike(_.noop);\n * // => false\n *\n * _.isObjectLike(null);\n * // => false\n */\nfunction isObjectLike(value) {\n  return !!value && (typeof value === 'undefined' ? 'undefined' : _typeof(value)) == 'object';\n}\n\nexports.default = isObjectLike;\n\n/***/ }),\n/* 44 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; };\n\nvar _isObjectLike = __webpack_require__(43);\n\nvar _isObjectLike2 = _interopRequireDefault(_isObjectLike);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** `Object#toString` result references. */\nvar symbolTag = '[object Symbol]';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/**\n * Used to resolve the\n * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)\n * of values.\n */\nvar objectToString = objectProto.toString;\n\n/**\n * Checks if `value` is classified as a `Symbol` primitive or object.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is correctly classified,\n *  else `false`.\n * @example\n *\n * _.isSymbol(Symbol.iterator);\n * // => true\n *\n * _.isSymbol('abc');\n * // => false\n */\nfunction isSymbol(value) {\n  return (typeof value === 'undefined' ? 'undefined' : _typeof(value)) == 'symbol' || (0, _isObjectLike2.default)(value) && objectToString.call(value) == symbolTag;\n}\n\nexports.default = isSymbol;\n\n/***/ }),\n/* 45 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module engine/conversion/buildmodelconverter\n */\n\nexports.default = buildModelConverter;\n\nvar _modelToViewConverters = __webpack_require__(101);\n\nvar _modelSelectionToViewConverters = __webpack_require__(159);\n\nvar _attributeelement = __webpack_require__(115);\n\nvar _attributeelement2 = _interopRequireDefault(_attributeelement);\n\nvar _containerelement = __webpack_require__(39);\n\nvar _containerelement2 = _interopRequireDefault(_containerelement);\n\nvar _uielement = __webpack_require__(171);\n\nvar _uielement2 = _interopRequireDefault(_uielement);\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * Provides chainable, high-level API to easily build basic model-to-view converters that are appended to given\n * dispatchers. In many cases, this is the API that should be used to specify how abstract model elements and\n * attributes should be represented in the view (and then later in DOM). Instances of this class are created by\n * {@link module:engine/conversion/buildmodelconverter~buildModelConverter}.\n *\n * If you need more complex converters, see {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher},\n * {@link module:engine/conversion/model-to-view-converters}, {@link module:engine/conversion/modelconsumable~ModelConsumable},\n * {@link module:engine/conversion/mapper~Mapper}.\n *\n * Using this API it is possible to create four kinds of converters:\n *\n * 1. Model element to view element converter. This is a converter that takes the model element and represents it\n * in the view.\n *\n *\t\tbuildModelConverter().for( dispatcher ).fromElement( 'paragraph' ).toElement( 'p' );\n *\t\tbuildModelConverter().for( dispatcher ).fromElement( 'image' ).toElement( 'img' );\n *\n * 2. Model attribute to view attribute converter. This is a converter that operates on model element attributes\n * and converts them to view element attributes. It is suitable for elements like `image` (`src`, `title` attributes).\n *\n *\t\tbuildModelConverter().for( dispatcher ).fromElement( 'image' ).toElement( 'img' );\n *\t\tbuildModelConverter().for( dispatcher ).fromAttribute( 'src' ).toAttribute();\n *\n * 3. Model attribute to view element converter. This is a converter that takes model attributes and represents them\n * as view elements. Elements created by this kind of converter are wrapping other view elements. Wrapped view nodes\n * correspond to model nodes had converter attribute. It is suitable for attributes like `bold`, where `bold` attribute\n * set on model text nodes is converter to `strong` view element.\n *\n *\t\tbuildModelConverter().for( dispatcher ).fromAttribute( 'bold' ).toElement( 'strong' );\n *\n * 4. Model marker to view element converter. This is a converter that converts markers from given group to view attribute element.\n * Markers, basically, are {@link module:engine/model/liverange~LiveRange} instances, that are named. In this conversion, model range is\n * converted to view range, then that view range is wrapped (or unwrapped, if range is removed) in a view attribute element.\n * To learn more about markers, see {@link module:engine/model/markercollection~MarkerCollection}.\n *\n *\t\tconst viewSpanSearchResult = new ViewAttributeElement( 'span', { class: 'search-result' } );\n *\t\tbuildModelConverter().for( dispatcher ).fromMarker( 'searchResult' ).toElement( viewSpanSearchResult );\n *\n * It is possible to provide various different parameters for\n * {@link module:engine/conversion/buildmodelconverter~ModelConverterBuilder#toElement}\n * and {@link module:engine/conversion/buildmodelconverter~ModelConverterBuilder#toAttribute} methods.\n * See their descriptions to learn more.\n *\n * It is also possible to {@link module:engine/conversion/buildmodelconverter~ModelConverterBuilder#withPriority change default priority}\n * of created converters to decide which converter should be fired earlier and which later. This is useful if you have\n * a general converter but also want to provide different special-case converters (i.e. given model element is converted\n * always to given view element, but if it has given attribute it is converter to other view element). For this,\n * use {@link module:engine/conversion/buildmodelconverter~ModelConverterBuilder#withPriority withPriority} right after `from...` method.\n *\n * Note that `to...` methods are \"terminators\", which means that should be the last one used in building converter.\n *\n * You can use {@link module:engine/conversion/buildviewconverter~ViewConverterBuilder}\n * to create \"opposite\" converters - from view to model.\n */\nvar ModelConverterBuilder = function () {\n\t/**\n  * Creates `ModelConverterBuilder` with given `dispatchers` registered to it.\n  */\n\tfunction ModelConverterBuilder() {\n\t\t_classCallCheck(this, ModelConverterBuilder);\n\n\t\t/**\n   * Dispatchers to which converters will be attached.\n   *\n   * @type {Array.<module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher>}\n   * @private\n   */\n\t\tthis._dispatchers = [];\n\n\t\t/**\n   * Contains data about registered \"from\" query.\n   *\n   * @type {Object}\n   * @private\n   */\n\t\tthis._from = null;\n\t}\n\n\t/**\n  * Set one or more dispatchers which the built converter will be attached to.\n  *\n  * @chainable\n  * @param {...module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher} dispatchers One or more dispatchers.\n  * @returns {module:engine/conversion/buildmodelconverter~ModelConverterBuilder}\n  */\n\n\n\t_createClass(ModelConverterBuilder, [{\n\t\tkey: 'for',\n\t\tvalue: function _for() {\n\t\t\tfor (var _len = arguments.length, dispatchers = Array(_len), _key = 0; _key < _len; _key++) {\n\t\t\t\tdispatchers[_key] = arguments[_key];\n\t\t\t}\n\n\t\t\tthis._dispatchers = dispatchers;\n\n\t\t\treturn this;\n\t\t}\n\n\t\t/**\n   * Registers what model element should be converted.\n   *\n   * @chainable\n   * @param {String} elementName Name of element to convert.\n   * @returns {module:engine/conversion/buildmodelconverter~ModelConverterBuilder}\n   */\n\n\t}, {\n\t\tkey: 'fromElement',\n\t\tvalue: function fromElement(elementName) {\n\t\t\tthis._from = {\n\t\t\t\ttype: 'element',\n\t\t\t\tname: elementName,\n\t\t\t\tpriority: null\n\t\t\t};\n\n\t\t\treturn this;\n\t\t}\n\n\t\t/**\n   * Registers what model attribute should be converted.\n   *\n   * @chainable\n   * @param {String} key Key of attribute to convert.\n   * @returns {module:engine/conversion/buildmodelconverter~ModelConverterBuilder}\n   */\n\n\t}, {\n\t\tkey: 'fromAttribute',\n\t\tvalue: function fromAttribute(key) {\n\t\t\tthis._from = {\n\t\t\t\ttype: 'attribute',\n\t\t\t\tkey: key,\n\t\t\t\tpriority: null\n\t\t\t};\n\n\t\t\treturn this;\n\t\t}\n\n\t\t/**\n   * Registers what type of non-collapsed marker should be converted. For collapsed markers conversion, see\n   * {@link #fromCollapsedMarker}.\n   *\n   * @chainable\n   * @param {String} markerName Name of marker to convert.\n   * @returns {module:engine/conversion/buildmodelconverter~ModelConverterBuilder}\n   */\n\n\t}, {\n\t\tkey: 'fromMarker',\n\t\tvalue: function fromMarker(markerName) {\n\t\t\tthis._from = {\n\t\t\t\ttype: 'marker',\n\t\t\t\tname: markerName,\n\t\t\t\tpriority: null,\n\t\t\t\tcollapsed: false\n\t\t\t};\n\n\t\t\treturn this;\n\t\t}\n\n\t\t/**\n   * Registers what type of collapsed marker should be converted. For non-collapsed markers conversion,\n   * see {@link #fromMarker}.\n   *\n   * @chainable\n   * @param {String} markerName Name of marker to convert.\n   * @returns {module:engine/conversion/buildmodelconverter~ModelConverterBuilder}\n   */\n\n\t}, {\n\t\tkey: 'fromCollapsedMarker',\n\t\tvalue: function fromCollapsedMarker(markerName) {\n\t\t\tthis._from = {\n\t\t\t\ttype: 'marker',\n\t\t\t\tname: markerName,\n\t\t\t\tpriority: null,\n\t\t\t\tcollapsed: true\n\t\t\t};\n\n\t\t\treturn this;\n\t\t}\n\n\t\t/**\n   * Changes default priority for built converter. The lower the number, the earlier converter will be fired.\n   * Default priority is `10`.\n   *\n   * **Note:** Keep in mind that event priority, that is set by this modifier, is used for attribute priority\n   * when {@link module:engine/view/writer~writer} is used. This changes how view elements are ordered,\n   * i.e.: `<strong><em>foo</em></strong>` vs `<em><strong>foo</strong></em>`. Using priority you can also\n   * prevent node merging, i.e.: `<span class=\"bold\"><span class=\"theme\">foo</span><span>` vs `<span class=\"bold theme\">foo</span>`.\n   * If you want to prevent merging, just set different priority for both converters.\n   *\n   *\t\tbuildModelConverter().for( dispatcher ).fromAttribute( 'bold' ).withPriority( 2 ).toElement( 'strong' );\n   *\t\tbuildModelConverter().for( dispatcher ).fromAttribute( 'italic' ).withPriority( 3 ).toElement( 'em' );\n   *\n   * @chainable\n   * @param {Number} priority Converter priority.\n   * @returns {module:engine/conversion/buildmodelconverter~ModelConverterBuilder}\n   */\n\n\t}, {\n\t\tkey: 'withPriority',\n\t\tvalue: function withPriority(priority) {\n\t\t\tthis._from.priority = priority;\n\n\t\t\treturn this;\n\t\t}\n\n\t\t/**\n   * Registers what view element will be created by converter.\n   *\n   * Method accepts various ways of providing how the view element will be created. You can pass view element name as\n   * `string`, view element instance which will be cloned and used, or creator function which returns view element that\n   * will be used. Keep in mind that when you view element instance or creator function, it has to be/return a\n   * proper type of view element: {@link module:engine/view/containerelement~ContainerElement ViewContainerElement} if you convert\n   * from element or {@link module:engine/view/attributeelement~AttributeElement ViewAttributeElement} if you convert from attribute.\n   *\n   *\t\tbuildModelConverter().for( dispatcher ).fromElement( 'paragraph' ).toElement( 'p' );\n   *\n   *\t\tbuildModelConverter().for( dispatcher ).fromElement( 'image' ).toElement( new ViewContainerElement( 'img' ) );\n   *\n   *\t\tbuildModelConverter().for( dispatcher )\n   *\t\t\t.fromElement( 'header' )\n   *\t\t\t.toElement( ( data ) => new ViewContainerElement( 'h' + data.item.getAttribute( 'level' ) ) );\n   *\n   *\t\tbuildModelConverter().for( dispatcher ).fromAttribute( 'bold' ).toElement( new ViewAttributeElement( 'strong' ) );\n   *\n   * Creator function will be passed different values depending whether conversion is from element or from attribute:\n   *\n   * * from element: dispatcher's\n   * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:insert insert event}\n   * parameters will be passed,\n   * * from attribute: there is one parameter and it is attribute value.\n   *\n   * This method also registers model selection to view selection converter, if conversion is from attribute.\n   *\n   * This method creates the converter and adds it as a callback to a proper\n   * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher conversion dispatcher} event.\n   *\n   * @param {String|module:engine/view/element~Element|Function} element Element created by converter or\n   * a function that returns view element.\n   */\n\n\t}, {\n\t\tkey: 'toElement',\n\t\tvalue: function toElement(element) {\n\t\t\tvar priority = this._from.priority === null ? 'normal' : this._from.priority;\n\n\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\tvar _didIteratorError = false;\n\t\t\tvar _iteratorError = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator = this._dispatchers[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\tvar dispatcher = _step.value;\n\n\t\t\t\t\tif (this._from.type == 'element') {\n\t\t\t\t\t\t// From model element to view element -> insert element.\n\t\t\t\t\t\telement = typeof element == 'string' ? new _containerelement2.default(element) : element;\n\n\t\t\t\t\t\tdispatcher.on('insert:' + this._from.name, (0, _modelToViewConverters.insertElement)(element), { priority: priority });\n\t\t\t\t\t} else if (this._from.type == 'attribute') {\n\t\t\t\t\t\t// From model attribute to view element -> wrap and unwrap.\n\t\t\t\t\t\telement = typeof element == 'string' ? new _attributeelement2.default(element) : element;\n\n\t\t\t\t\t\tdispatcher.on('addAttribute:' + this._from.key, (0, _modelToViewConverters.wrapItem)(element), { priority: priority });\n\t\t\t\t\t\tdispatcher.on('changeAttribute:' + this._from.key, (0, _modelToViewConverters.wrapItem)(element), { priority: priority });\n\t\t\t\t\t\tdispatcher.on('removeAttribute:' + this._from.key, (0, _modelToViewConverters.unwrapItem)(element), { priority: priority });\n\n\t\t\t\t\t\tdispatcher.on('selectionAttribute:' + this._from.key, (0, _modelSelectionToViewConverters.convertSelectionAttribute)(element), { priority: priority });\n\t\t\t\t\t} else {\n\t\t\t\t\t\tif (this._from.collapsed) {\n\t\t\t\t\t\t\t// From collapsed marker to view element -> insertUIElement, removeUIElement.\n\t\t\t\t\t\t\telement = typeof element == 'string' ? new _uielement2.default(element) : element;\n\n\t\t\t\t\t\t\tdispatcher.on('addMarker:' + this._from.name, (0, _modelToViewConverters.insertUIElement)(element), { priority: priority });\n\t\t\t\t\t\t\tdispatcher.on('removeMarker:' + this._from.name, (0, _modelToViewConverters.removeUIElement)(element), { priority: priority });\n\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\t// From non-collapsed marker to view element -> wrapRange and unwrapRange.\n\t\t\t\t\t\t\telement = typeof element == 'string' ? new _attributeelement2.default(element) : element;\n\n\t\t\t\t\t\t\tdispatcher.on('addMarker:' + this._from.name, (0, _modelToViewConverters.wrapRange)(element), { priority: priority });\n\t\t\t\t\t\t\tdispatcher.on('removeMarker:' + this._from.name, (0, _modelToViewConverters.unwrapRange)(element), { priority: priority });\n\n\t\t\t\t\t\t\tdispatcher.on('selectionMarker:' + this._from.name, (0, _modelSelectionToViewConverters.convertSelectionMarker)(element), { priority: priority });\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError = true;\n\t\t\t\t_iteratorError = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Registers what view attribute will be created by converter. Keep in mind, that only model attribute to\n   * view attribute conversion is supported.\n   *\n   * Method accepts various ways of providing how the view attribute will be created:\n   *\n   * * for no passed parameter, attribute key and value will be converted 1-to-1 to view attribute,\n   * * if you pass one `string`, it will be used as new attribute key while attribute value will be copied,\n   * * if you pass two `string`s, first one will be used as new attribute key and second one as new attribute value,\n   * * if you pass a function, it is expected to return an object with `key` and `value` properties representing attribute key and value.\n   * This function will be passed model attribute value and model attribute key as first two parameters and then\n   * all dispatcher's\n   * {module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:changeAttribute changeAttribute event}\n   * parameters.\n   *\n   *\t\tbuildModelConverter().for( dispatcher ).fromAttribute( 'class' ).toAttribute( '' );\n   *\n   *\t\tbuildModelConverter().for( dispatcher ).fromAttribute( 'linkTitle' ).toAttribute( 'title' );\n   *\n   *\t\tbuildModelConverter().for( dispatcher ).fromAttribute( 'highlighted' ).toAttribute( 'style', 'background:yellow' );\n   *\n   *\t\tbuildModelConverter().for( dispatcher )\n   *\t\t\t.fromAttribute( 'theme' )\n   *\t\t\t.toAttribute( ( value ) => ( { key: 'class', value: value + '-theme' } ) );\n   *\n   * This method creates the converter and adds it as a callback to a proper\n   * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher conversion dispatcher} event.\n   *\n   * @param {String|Function} [keyOrCreator] Attribute key or a creator function.\n   * @param {*} [value] Attribute value.\n   */\n\n\t}, {\n\t\tkey: 'toAttribute',\n\t\tvalue: function toAttribute(keyOrCreator, value) {\n\t\t\tif (this._from.type != 'attribute') {\n\t\t\t\t/**\n     * To-attribute conversion is supported only for model attributes.\n     *\n     * @error build-model-converter-element-to-attribute\n     * @param {module:engine/model/range~Range} range\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('build-model-converter-non-attribute-to-attribute: ' + 'To-attribute conversion is supported only from model attributes.');\n\t\t\t}\n\n\t\t\tvar attributeCreator = void 0;\n\n\t\t\tif (!keyOrCreator) {\n\t\t\t\t// If `keyOrCreator` is not set, we assume default behavior which is 1:1 attribute re-write.\n\t\t\t\t// This is also a default behavior for `setAttribute` converter when no attribute creator is passed.\n\t\t\t\tattributeCreator = undefined;\n\t\t\t} else if (typeof keyOrCreator == 'string') {\n\t\t\t\t// `keyOrCreator` is an attribute key.\n\n\t\t\t\tif (value) {\n\t\t\t\t\t// If value is set, create \"dumb\" creator that always returns the same object.\n\t\t\t\t\tattributeCreator = function attributeCreator() {\n\t\t\t\t\t\treturn { key: keyOrCreator, value: value };\n\t\t\t\t\t};\n\t\t\t\t} else {\n\t\t\t\t\t// If value is not set, take it from the passed parameter.\n\t\t\t\t\tattributeCreator = function attributeCreator(value) {\n\t\t\t\t\t\treturn { key: keyOrCreator, value: value };\n\t\t\t\t\t};\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\t// `keyOrCreator` is an attribute creator function.\n\t\t\t\tattributeCreator = keyOrCreator;\n\t\t\t}\n\n\t\t\tvar _iteratorNormalCompletion2 = true;\n\t\t\tvar _didIteratorError2 = false;\n\t\t\tvar _iteratorError2 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator2 = this._dispatchers[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {\n\t\t\t\t\tvar dispatcher = _step2.value;\n\n\t\t\t\t\tvar options = { priority: this._from.priority || 'normal' };\n\n\t\t\t\t\tdispatcher.on('addAttribute:' + this._from.key, (0, _modelToViewConverters.setAttribute)(attributeCreator), options);\n\t\t\t\t\tdispatcher.on('changeAttribute:' + this._from.key, (0, _modelToViewConverters.setAttribute)(attributeCreator), options);\n\t\t\t\t\tdispatcher.on('removeAttribute:' + this._from.key, (0, _modelToViewConverters.removeAttribute)(attributeCreator), options);\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError2 = true;\n\t\t\t\t_iteratorError2 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion2 && _iterator2.return) {\n\t\t\t\t\t\t_iterator2.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError2) {\n\t\t\t\t\t\tthrow _iteratorError2;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}]);\n\n\treturn ModelConverterBuilder;\n}();\n\n/**\n * Entry point for model-to-view converters builder. This chainable API makes it easy to create basic, most common\n * model-to-view converters and attach them to provided dispatchers. The method returns an instance of\n * {@link module:engine/conversion/buildmodelconverter~ModelConverterBuilder}.\n */\n\n\nfunction buildModelConverter() {\n\treturn new ModelConverterBuilder();\n}\n\n/***/ }),\n/* 46 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module engine/conversion/buildviewconverter\n */\n\nexports.default = buildViewConverter;\n\nvar _matcher = __webpack_require__(117);\n\nvar _matcher2 = _interopRequireDefault(_matcher);\n\nvar _element = __webpack_require__(5);\n\nvar _element2 = _interopRequireDefault(_element);\n\nvar _position = __webpack_require__(1);\n\nvar _position2 = _interopRequireDefault(_position);\n\nvar _writer = __webpack_require__(28);\n\nvar _writer2 = _interopRequireDefault(_writer);\n\nvar _isiterable = __webpack_require__(41);\n\nvar _isiterable2 = _interopRequireDefault(_isiterable);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * Provides chainable, high-level API to easily build basic view-to-model converters that are appended to given\n * dispatchers. View-to-model converters are used when external data is added to the editor, i.e. when a user pastes\n * HTML content to the editor. Then, converters are used to translate this structure, possibly removing unknown/incorrect\n * nodes, and add it to the model. Also multiple, different elements might be translated into the same thing in the\n * model, i.e. `<b>` and `<strong>` elements might be converted to `bold` attribute (even though `bold` attribute will\n * be then converted only to `<strong>` tag). Instances of this class are created by\n * {@link module:engine/conversion/buildviewconverter~buildViewConverter}.\n *\n * If you need more complex converters, see {@link module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher},\n * {@link module:engine/conversion/view-to-model-converters}, {@link module:engine/conversion/viewconsumable~ViewConsumable}.\n *\n * Using this API it is possible to create various kind of converters:\n *\n * 1. View element to model element:\n *\n *\t\tbuildViewConverter().for( dispatcher ).fromElement( 'p' ).toElement( 'paragraph' );\n *\n * 2. View element to model attribute:\n *\n *\t\tbuildViewConverter().for( dispatcher ).fromElement( 'b' ).fromElement( 'strong' ).toAttribute( 'bold', 'true' );\n *\n * 3. View attribute to model attribute:\n *\n *\t\tbuildViewConverter().for( dispatcher ).fromAttribute( 'style', { 'font-weight': 'bold' } ).toAttribute( 'bold', 'true' );\n *\t\tbuildViewConverter().for( dispatcher )\n *\t\t\t.fromAttribute( 'class' )\n *\t\t\t.toAttribute( ( viewElement ) => ( { class: viewElement.getAttribute( 'class' ) } ) );\n *\n * 4. View elements and attributes to model attribute:\n *\n *\t\tbuildViewConverter().for( dispatcher )\n *\t\t\t.fromElement( 'b' ).fromElement( 'strong' ).fromAttribute( 'style', { 'font-weight': 'bold' } )\n *\t\t\t.toAttribute( 'bold', 'true' );\n *\n * 5. View {@link module:engine/view/matcher~Matcher view element matcher instance} or\n * {@link module:engine/view/matcher~Matcher#add matcher pattern}\n * to model element or attribute:\n *\n *\t\tconst matcher = new ViewMatcher();\n *\t\tmatcher.add( 'div', { class: 'quote' } );\n *\t\tbuildViewConverter().for( dispatcher ).from( matcher ).toElement( 'quote' );\n *\n *\t\tbuildViewConverter().for( dispatcher ).from( { name: 'span', class: 'bold' } ).toAttribute( 'bold', 'true' );\n *\n * Note, that converters built using `ViewConverterBuilder` automatically check {@link module:engine/model/schema~Schema schema}\n * if created model structure is valid. If given conversion would be invalid according to schema, it is ignored.\n *\n * It is possible to provide creator functions as parameters for {@link ~ViewConverterBuilder#toElement}\n * and {@link module:engine/conversion/buildviewconverter~ViewConverterBuilder#toAttribute} methods. See their descriptions to learn more.\n *\n * By default, converter will {@link module:engine/conversion/viewconsumable~ViewConsumable#consume consume} every value specified in\n * given `from...` query, i.e. `.from( { name: 'span', class: 'bold' } )` will make converter consume both `span` name\n * and `bold` class. It is possible to change this behavior using {@link ~ViewConverterBuilder#consuming consuming}\n * modifier. The modifier alters the last `fromXXX` query used before it. To learn more about consuming values,\n * see {@link module:engine/conversion/viewconsumable~ViewConsumable}.\n *\n * It is also possible to {@link module:engine/conversion/buildviewconverter~ViewConverterBuilder#withPriority change default priority}\n * of created converters to decide which converter should be fired earlier and which later. This is useful if you provide\n * a general converter but want to provide different converter for a specific-case (i.e. given view element is converted\n * always to given model element, but if it has given class it is converter to other model element). For this,\n * use {@link module:engine/conversion/buildviewconverter~ViewConverterBuilder#withPriority withPriority} modifier. The modifier alters\n * the last `from...` query used before it.\n *\n * Note that `to...` methods are \"terminators\", which means that should be the last one used in building converter.\n *\n * You can use {@link module:engine/conversion/buildmodelconverter~ModelConverterBuilder}\n * to create \"opposite\" converters - from model to view.\n */\nvar ViewConverterBuilder = function () {\n\t/**\n  * Creates `ViewConverterBuilder` with given `dispatchers` registered to it.\n  */\n\tfunction ViewConverterBuilder() {\n\t\t_classCallCheck(this, ViewConverterBuilder);\n\n\t\t/**\n   * Dispatchers to which converters will be attached.\n   *\n   * @type {Array.<module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher>}\n   * @private\n   */\n\t\tthis._dispatchers = [];\n\n\t\t/**\n   * Stores \"from\" queries.\n   *\n   * @type {Array}\n   * @private\n   */\n\t\tthis._from = [];\n\t}\n\n\t/**\n  * Set one or more dispatchers which the built converter will be attached to.\n  *\n  * @chainable\n  * @param {...module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher} dispatchers One or more dispatchers.\n  * @returns {module:engine/conversion/buildviewconverter~ViewConverterBuilder}\n  */\n\n\n\t_createClass(ViewConverterBuilder, [{\n\t\tkey: 'for',\n\t\tvalue: function _for() {\n\t\t\tfor (var _len = arguments.length, dispatchers = Array(_len), _key = 0; _key < _len; _key++) {\n\t\t\t\tdispatchers[_key] = arguments[_key];\n\t\t\t}\n\n\t\t\tthis._dispatchers = dispatchers;\n\n\t\t\treturn this;\n\t\t}\n\n\t\t/**\n   * Registers what view element should be converted.\n   *\n   *\t\tbuildViewConverter().for( dispatcher ).fromElement( 'p' ).toElement( 'paragraph' );\n   *\n   * @chainable\n   * @param {String} elementName View element name.\n   * @returns {module:engine/conversion/buildviewconverter~ViewConverterBuilder}\n   */\n\n\t}, {\n\t\tkey: 'fromElement',\n\t\tvalue: function fromElement(elementName) {\n\t\t\treturn this.from({ name: elementName });\n\t\t}\n\n\t\t/**\n   * Registers what view attribute should be converted.\n   *\n   *\t\tbuildViewConverter().for( dispatcher ).fromAttribute( 'style', { 'font-weight': 'bold' } ).toAttribute( 'bold', 'true' );\n   *\n   * @chainable\n   * @param {String|RegExp} key View attribute key.\n   * @param {String|RegExp} [value] View attribute value.\n   * @returns {module:engine/conversion/buildviewconverter~ViewConverterBuilder}\n   */\n\n\t}, {\n\t\tkey: 'fromAttribute',\n\t\tvalue: function fromAttribute(key) {\n\t\t\tvar value = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : /.*/;\n\n\t\t\tvar pattern = {};\n\t\t\tpattern[key] = value;\n\n\t\t\treturn this.from(pattern);\n\t\t}\n\n\t\t/**\n   * Registers what view pattern should be converted. The method accepts either {@link module:engine/view/matcher~Matcher view matcher}\n   * or view matcher pattern.\n   *\n   *\t\tconst matcher = new ViewMatcher();\n   *\t\tmatcher.add( 'div', { class: 'quote' } );\n   *\t\tbuildViewConverter().for( dispatcher ).from( matcher ).toElement( 'quote' );\n   *\n   *\t\tbuildViewConverter().for( dispatcher ).from( { name: 'span', class: 'bold' } ).toAttribute( 'bold', 'true' );\n   *\n   * @chainable\n   * @param {Object|module:engine/view/matcher~Matcher} matcher View matcher or view matcher pattern.\n   * @returns {module:engine/conversion/buildviewconverter~ViewConverterBuilder}\n   */\n\n\t}, {\n\t\tkey: 'from',\n\t\tvalue: function from(matcher) {\n\t\t\tif (!(matcher instanceof _matcher2.default)) {\n\t\t\t\tmatcher = new _matcher2.default(matcher);\n\t\t\t}\n\n\t\t\tthis._from.push({\n\t\t\t\tmatcher: matcher,\n\t\t\t\tconsume: false,\n\t\t\t\tpriority: null\n\t\t\t});\n\n\t\t\treturn this;\n\t\t}\n\n\t\t/**\n   * Modifies which consumable values will be {@link module:engine/conversion/viewconsumable~ViewConsumable#consume consumed}\n   * by built converter.\n   * It modifies the last `from...` query. Can be used after each `from...` query in given chain. Useful for providing\n   * more specific matches.\n   *\n   *\t\t// This converter will only handle class bold conversion (to proper attribute) but span element\n   *\t\t// conversion will have to be done in separate converter.\n   *\t\t// Without consuming modifier, the converter would consume both class and name, so a converter for\n   *\t\t// span element would not be fired.\n   *\t\tbuildViewConverter().for( dispatcher )\n   *\t\t\t.from( { name: 'span', class: 'bold' } ).consuming( { class: 'bold' } )\n   *\t\t\t.toAttribute( 'bold', 'true' } );\n   *\n   *\t\tbuildViewConverter().for( dispatcher )\n   *\t\t\t.fromElement( 'img' ).consuming( { name: true, attributes: [ 'src', 'title' ] } )\n   *\t\t\t.toElement( ( viewElement ) => new ModelElement( 'image', { src: viewElement.getAttribute( 'src' ),\n   *\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\ttitle: viewElement.getAttribute( 'title' ) } );\n   *\n   * **Note:** All and only values from passed object has to be consumable on converted view element. This means that\n   * using `consuming` method, you can either make looser conversion conditions (like in first example) or tighter\n   * conversion conditions (like in second example). So, the view element, to be converter, has to match query of\n   * `from...` method and then have to have enough consumable values to consume.\n   *\n   * @see module:engine/conversion/viewconsumable~ViewConsumable\n   * @chainable\n   * @param {Object} consume Values to consume.\n   * @returns {module:engine/conversion/buildviewconverter~ViewConverterBuilder}\n   */\n\n\t}, {\n\t\tkey: 'consuming',\n\t\tvalue: function consuming(consume) {\n\t\t\tvar lastFrom = this._from[this._from.length - 1];\n\t\t\tlastFrom.consume = consume;\n\n\t\t\treturn this;\n\t\t}\n\n\t\t/**\n   * Changes default priority for built converter. It modifies the last `from...` query. Can be used after each\n   * `from...` query in given chain. Useful for overwriting converters. The lower the number, the earlier converter will be fired.\n   *\n   *\t\tbuildViewConverter().for( dispatcher ).fromElement( 'p' ).toElement( 'paragraph' );\n   *\t\t// Register converter with proper priority, otherwise \"p\" element would get consumed by first\n   *\t\t// converter and the second converter would not be fired.\n   *\t\tbuildViewConverter().for( dispatcher )\n   *\t\t\t.from( { name: 'p', class: 'custom' } ).withPriority( 9 )\n   *\t\t\t.toElement( 'customParagraph' );\n   *\n   * **Note:** `ViewConverterBuilder` takes care so all `toElement` conversions takes place before all `toAttribute`\n   * conversions. This is done by setting default `toElement` priority to `10` and `toAttribute` priority to `1000`.\n   * It is recommended to set converter priority for `toElement` conversions below `500` and `toAttribute` priority\n   * above `500`. It is important that model elements are created before attributes, otherwise attributes would\n   * not be applied or other errors may occur.\n   *\n   * @chainable\n   * @param {Number} priority Converter priority.\n   * @returns {module:engine/conversion/buildviewconverter~ViewConverterBuilder}\n   */\n\n\t}, {\n\t\tkey: 'withPriority',\n\t\tvalue: function withPriority(priority) {\n\t\t\tvar lastFrom = this._from[this._from.length - 1];\n\t\t\tlastFrom.priority = priority;\n\n\t\t\treturn this;\n\t\t}\n\n\t\t/**\n   * Registers what model element will be created by converter.\n   *\n   * Method accepts two ways of providing what kind of model element will be created. You can pass model element\n   * name as a `string` or a function that will return model element instance. If you provide creator function,\n   * it will be passed converted view element as first and only parameter.\n   *\n   *\t\tbuildViewConverter().for( dispatcher ).fromElement( 'p' ).toElement( 'paragraph' );\n   *\t\tbuildViewConverter().for( dispatcher )\n   *\t\t\t.fromElement( 'img' )\n   *\t\t\t.toElement( ( viewElement ) => new ModelElement( 'image', { src: viewElement.getAttribute( 'src' ) } );\n   *\n   * @param {String|Function} element Model element name or model element creator function.\n   */\n\n\t}, {\n\t\tkey: 'toElement',\n\t\tvalue: function toElement(element) {\n\t\t\tvar eventCallbackGen = function eventCallbackGen(from) {\n\t\t\t\treturn function (evt, data, consumable, conversionApi) {\n\t\t\t\t\t// There is one callback for all patterns in the matcher.\n\t\t\t\t\t// This will be usually just one pattern but we support matchers with many patterns too.\n\t\t\t\t\tvar matchAll = from.matcher.matchAll(data.input);\n\n\t\t\t\t\t// If there is no match, this callback should not do anything.\n\t\t\t\t\tif (!matchAll) {\n\t\t\t\t\t\treturn;\n\t\t\t\t\t}\n\n\t\t\t\t\t// Now, for every match between matcher and actual element, we will try to consume the match.\n\t\t\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\t\t\tvar _didIteratorError = false;\n\t\t\t\t\tvar _iteratorError = undefined;\n\n\t\t\t\t\ttry {\n\t\t\t\t\t\tfor (var _iterator = matchAll[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\t\t\tvar match = _step.value;\n\n\t\t\t\t\t\t\t// Create model element basing on creator function or element name.\n\t\t\t\t\t\t\tvar modelElement = element instanceof Function ? element(data.input) : new _element2.default(element);\n\n\t\t\t\t\t\t\t// Check whether generated structure is okay with `Schema`.\n\t\t\t\t\t\t\tvar keys = Array.from(modelElement.getAttributeKeys());\n\n\t\t\t\t\t\t\tif (!conversionApi.schema.check({ name: modelElement.name, attributes: keys, inside: data.context })) {\n\t\t\t\t\t\t\t\tcontinue;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t// Try to consume appropriate values from consumable values list.\n\t\t\t\t\t\t\tif (!consumable.consume(data.input, from.consume || match.match)) {\n\t\t\t\t\t\t\t\tcontinue;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t// If everything is fine, we are ready to start the conversion.\n\t\t\t\t\t\t\t// Add newly created `modelElement` to the parents stack.\n\t\t\t\t\t\t\tdata.context.push(modelElement);\n\n\t\t\t\t\t\t\t// Convert children of converted view element and append them to `modelElement`.\n\t\t\t\t\t\t\tvar modelChildren = conversionApi.convertChildren(data.input, consumable, data);\n\t\t\t\t\t\t\tvar insertPosition = _position2.default.createAt(modelElement, 'end');\n\t\t\t\t\t\t\t_writer2.default.insert(insertPosition, modelChildren);\n\n\t\t\t\t\t\t\t// Remove created `modelElement` from the parents stack.\n\t\t\t\t\t\t\tdata.context.pop();\n\n\t\t\t\t\t\t\t// Add `modelElement` as a result.\n\t\t\t\t\t\t\tdata.output = modelElement;\n\n\t\t\t\t\t\t\t// Prevent multiple conversion if there are other correct matches.\n\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t}\n\t\t\t\t\t} catch (err) {\n\t\t\t\t\t\t_didIteratorError = true;\n\t\t\t\t\t\t_iteratorError = err;\n\t\t\t\t\t} finally {\n\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} finally {\n\t\t\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t};\n\t\t\t};\n\n\t\t\tthis._setCallback(eventCallbackGen, 'normal');\n\t\t}\n\n\t\t/**\n   * Registers what model attribute will be created by converter.\n   *\n   * Method accepts two ways of providing what kind of model attribute will be created. You can either pass two strings\n   * representing attribute key and attribute value or a function that returns an object with `key` and `value` properties.\n   * If you provide creator function, it will be passed converted view element as first and only parameter.\n   *\n   *\t\tbuildViewConverter().for( dispatcher ).fromAttribute( 'style', { 'font-weight': 'bold' } ).toAttribute( 'bold', 'true' );\n   *\t\tbuildViewConverter().for( dispatcher )\n   *\t\t\t.fromAttribute( 'class' )\n   *\t\t\t.toAttribute( ( viewElement ) => ( { key: 'class', value: viewElement.getAttribute( 'class' ) } ) );\n   *\n   * @param {String|Function} keyOrCreator Attribute key or a creator function.\n   * @param {String} [value] Attribute value. Required if `keyOrCreator` is a `string`. Ignored otherwise.\n   */\n\n\t}, {\n\t\tkey: 'toAttribute',\n\t\tvalue: function toAttribute(keyOrCreator, value) {\n\t\t\tvar eventCallbackGen = function eventCallbackGen(from) {\n\t\t\t\treturn function (evt, data, consumable, conversionApi) {\n\t\t\t\t\t// There is one callback for all patterns in the matcher.\n\t\t\t\t\t// This will be usually just one pattern but we support matchers with many patterns too.\n\t\t\t\t\tvar matchAll = from.matcher.matchAll(data.input);\n\n\t\t\t\t\t// If there is no match, this callback should not do anything.\n\t\t\t\t\tif (!matchAll) {\n\t\t\t\t\t\treturn;\n\t\t\t\t\t}\n\n\t\t\t\t\t// Now, for every match between matcher and actual element, we will try to consume the match.\n\t\t\t\t\tvar _iteratorNormalCompletion2 = true;\n\t\t\t\t\tvar _didIteratorError2 = false;\n\t\t\t\t\tvar _iteratorError2 = undefined;\n\n\t\t\t\t\ttry {\n\t\t\t\t\t\tfor (var _iterator2 = matchAll[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {\n\t\t\t\t\t\t\tvar match = _step2.value;\n\n\t\t\t\t\t\t\t// Try to consume appropriate values from consumable values list.\n\t\t\t\t\t\t\tif (!consumable.consume(data.input, from.consume || match.match)) {\n\t\t\t\t\t\t\t\tcontinue;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t// Since we are converting to attribute we need an output on which we will set the attribute.\n\t\t\t\t\t\t\t// If the output is not created yet, we will create it.\n\t\t\t\t\t\t\tif (!data.output) {\n\t\t\t\t\t\t\t\tdata.output = conversionApi.convertChildren(data.input, consumable, data);\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t// Use attribute creator function, if provided.\n\t\t\t\t\t\t\tvar attribute = keyOrCreator instanceof Function ? keyOrCreator(data.input) : { key: keyOrCreator, value: value };\n\n\t\t\t\t\t\t\t// Set attribute on current `output`. `Schema` is checked inside this helper function.\n\t\t\t\t\t\t\tsetAttributeOn(data.output, attribute, data, conversionApi);\n\n\t\t\t\t\t\t\t// Prevent multiple conversion if there are other correct matches.\n\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t}\n\t\t\t\t\t} catch (err) {\n\t\t\t\t\t\t_didIteratorError2 = true;\n\t\t\t\t\t\t_iteratorError2 = err;\n\t\t\t\t\t} finally {\n\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\tif (!_iteratorNormalCompletion2 && _iterator2.return) {\n\t\t\t\t\t\t\t\t_iterator2.return();\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} finally {\n\t\t\t\t\t\t\tif (_didIteratorError2) {\n\t\t\t\t\t\t\t\tthrow _iteratorError2;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t};\n\t\t\t};\n\n\t\t\tthis._setCallback(eventCallbackGen, 'low');\n\t\t}\n\n\t\t/**\n   * Helper function that uses given callback generator to created callback function and sets it on registered dispatchers.\n   *\n   * @param eventCallbackGen\n   * @param defaultPriority\n   * @private\n   */\n\n\t}, {\n\t\tkey: '_setCallback',\n\t\tvalue: function _setCallback(eventCallbackGen, defaultPriority) {\n\t\t\t// We will add separate event callback for each registered `from` entry.\n\t\t\tvar _iteratorNormalCompletion3 = true;\n\t\t\tvar _didIteratorError3 = false;\n\t\t\tvar _iteratorError3 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator3 = this._from[Symbol.iterator](), _step3; !(_iteratorNormalCompletion3 = (_step3 = _iterator3.next()).done); _iteratorNormalCompletion3 = true) {\n\t\t\t\t\tvar from = _step3.value;\n\n\t\t\t\t\t// We have to figure out event name basing on matcher's patterns.\n\t\t\t\t\t// If there is exactly one pattern and it has `name` property we will used that name.\n\t\t\t\t\tvar matcherElementName = from.matcher.getElementName();\n\t\t\t\t\tvar eventName = matcherElementName ? 'element:' + matcherElementName : 'element';\n\t\t\t\t\tvar eventCallback = eventCallbackGen(from);\n\n\t\t\t\t\tvar priority = from.priority === null ? defaultPriority : from.priority;\n\n\t\t\t\t\t// Add event to each registered dispatcher.\n\t\t\t\t\tvar _iteratorNormalCompletion4 = true;\n\t\t\t\t\tvar _didIteratorError4 = false;\n\t\t\t\t\tvar _iteratorError4 = undefined;\n\n\t\t\t\t\ttry {\n\t\t\t\t\t\tfor (var _iterator4 = this._dispatchers[Symbol.iterator](), _step4; !(_iteratorNormalCompletion4 = (_step4 = _iterator4.next()).done); _iteratorNormalCompletion4 = true) {\n\t\t\t\t\t\t\tvar dispatcher = _step4.value;\n\n\t\t\t\t\t\t\tdispatcher.on(eventName, eventCallback, { priority: priority });\n\t\t\t\t\t\t}\n\t\t\t\t\t} catch (err) {\n\t\t\t\t\t\t_didIteratorError4 = true;\n\t\t\t\t\t\t_iteratorError4 = err;\n\t\t\t\t\t} finally {\n\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\tif (!_iteratorNormalCompletion4 && _iterator4.return) {\n\t\t\t\t\t\t\t\t_iterator4.return();\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} finally {\n\t\t\t\t\t\t\tif (_didIteratorError4) {\n\t\t\t\t\t\t\t\tthrow _iteratorError4;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError3 = true;\n\t\t\t\t_iteratorError3 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion3 && _iterator3.return) {\n\t\t\t\t\t\t_iterator3.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError3) {\n\t\t\t\t\t\tthrow _iteratorError3;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}]);\n\n\treturn ViewConverterBuilder;\n}();\n\n// Helper function that sets given attributes on given `module:engine/model/node~Node` or\n// `module:engine/model/documentfragment~DocumentFragment`.\n\n\nfunction setAttributeOn(toChange, attribute, data, conversionApi) {\n\tif ((0, _isiterable2.default)(toChange)) {\n\t\tvar _iteratorNormalCompletion5 = true;\n\t\tvar _didIteratorError5 = false;\n\t\tvar _iteratorError5 = undefined;\n\n\t\ttry {\n\t\t\tfor (var _iterator5 = toChange[Symbol.iterator](), _step5; !(_iteratorNormalCompletion5 = (_step5 = _iterator5.next()).done); _iteratorNormalCompletion5 = true) {\n\t\t\t\tvar node = _step5.value;\n\n\t\t\t\tsetAttributeOn(node, attribute, data, conversionApi);\n\t\t\t}\n\t\t} catch (err) {\n\t\t\t_didIteratorError5 = true;\n\t\t\t_iteratorError5 = err;\n\t\t} finally {\n\t\t\ttry {\n\t\t\t\tif (!_iteratorNormalCompletion5 && _iterator5.return) {\n\t\t\t\t\t_iterator5.return();\n\t\t\t\t}\n\t\t\t} finally {\n\t\t\t\tif (_didIteratorError5) {\n\t\t\t\t\tthrow _iteratorError5;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn;\n\t}\n\n\tvar keys = Array.from(toChange.getAttributeKeys());\n\tkeys.push(attribute.key);\n\n\tvar schemaQuery = {\n\t\tname: toChange.name || '$text',\n\t\tattributes: keys,\n\t\tinside: data.context\n\t};\n\n\tif (conversionApi.schema.check(schemaQuery)) {\n\t\ttoChange.setAttribute(attribute.key, attribute.value);\n\t}\n}\n\n/**\n * Entry point for view-to-model converters builder. This chainable API makes it easy to create basic, most common\n * view-to-model converters and attach them to provided dispatchers. The method returns an instance of\n * {@link module:engine/conversion/buildviewconverter~ViewConverterBuilder}.\n */\nfunction buildViewConverter() {\n\treturn new ViewConverterBuilder();\n}\n\n/***/ }),\n/* 47 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module engine/view/observer/observer\n */\n\nvar _emittermixin = __webpack_require__(79);\n\nvar _emittermixin2 = _interopRequireDefault(_emittermixin);\n\nvar _mix = __webpack_require__(4);\n\nvar _mix2 = _interopRequireDefault(_mix);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * Abstract base observer class. Observers are classes which observe changes on DOM elements, do the preliminary\n * processing and fire events on the {@link module:engine/view/document~Document} objects. Observers can also add features to the view,\n * for instance by updating its status or marking elements which need refresh on DOM events.\n *\n * @abstract\n */\nvar Observer = function () {\n\t/**\n  * Creates an instance of the observer.\n  *\n  * @param {module:engine/view/document~Document} document\n  */\n\tfunction Observer(document) {\n\t\t_classCallCheck(this, Observer);\n\n\t\t/**\n   * Reference to the {@link module:engine/view/document~Document} object.\n   *\n   * @readonly\n   * @member {module:engine/view/document~Document}\n   */\n\t\tthis.document = document;\n\n\t\t/**\n   * State of the observer. If it is disabled events will not be fired.\n   *\n   * @readonly\n   * @member {Boolean}\n   */\n\t\tthis.isEnabled = false;\n\t}\n\n\t/**\n  * Enables the observer. This method is called when then observer is registered to the\n  * {@link module:engine/view/document~Document} and after {@link module:engine/view/document~Document#render rendering}\n  * (all observers are {@link #disable disabled} before rendering).\n  *\n  * A typical use case for disabling observers is that mutation observers need to be disabled for the rendering.\n  * However, a child class may not need to be disabled, so it can implement an empty method.\n  *\n  * @see module:engine/view/observer/observer~Observer#disable\n  */\n\n\n\t_createClass(Observer, [{\n\t\tkey: 'enable',\n\t\tvalue: function enable() {\n\t\t\tthis.isEnabled = true;\n\t\t}\n\n\t\t/**\n   * Disables the observer. This method is called before\n   * {@link module:engine/view/document~Document#render rendering} to prevent firing events during rendering.\n   *\n   * @see module:engine/view/observer/observer~Observer#enable\n   */\n\n\t}, {\n\t\tkey: 'disable',\n\t\tvalue: function disable() {\n\t\t\tthis.isEnabled = false;\n\t\t}\n\n\t\t/**\n   * Disables and destroys the observer, among others removes event listeners created by the observer.\n   */\n\n\t}, {\n\t\tkey: 'destroy',\n\t\tvalue: function destroy() {\n\t\t\tthis.disable();\n\t\t\tthis.stopListening();\n\t\t}\n\n\t\t/**\n   * Starts observing the given root element.\n   *\n   * @method #observe\n   * @param {HTMLElement} domElement\n   * @param {String} name The name of the root element.\n   */\n\n\t}]);\n\n\treturn Observer;\n}();\n\nexports.default = Observer;\n\n\n(0, _mix2.default)(Observer, _emittermixin2.default);\n\n/***/ }),\n/* 48 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = compareArrays;\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/comparearrays\n */\n\n/**\n * Compares how given arrays relate to each other. One array can be: same as another array, prefix of another array\n * or completely different. If arrays are different, first index at which they differ is returned. Otherwise,\n * a flag specifying the relation is returned. Flags are negative numbers, so whenever a number >= 0 is returned\n * it means that arrays differ.\n *\n *\t\tcompareArrays( [ 0, 2 ], [ 0, 2 ] );\t\t// 'same'\n *\t\tcompareArrays( [ 0, 2 ], [ 0, 2, 1 ] );\t\t// 'prefix'\n *\t\tcompareArrays( [ 0, 2 ], [ 0 ] );\t\t\t// 'extension'\n *\t\tcompareArrays( [ 0, 2 ], [ 1, 2 ] );\t\t// 0\n *\t\tcompareArrays( [ 0, 2 ], [ 0, 1 ] );\t\t// 1\n *\n * @param {Array} a Array that is compared.\n * @param {Array} b Array to compare with.\n * @returns {module:utils/comparearrays~ArrayRelation} How array `a` is related to `b`.\n */\nfunction compareArrays(a, b) {\n  var minLen = Math.min(a.length, b.length);\n\n  for (var i = 0; i < minLen; i++) {\n    if (a[i] != b[i]) {\n      // The arrays are different.\n      return i;\n    }\n  }\n\n  // Both arrays were same at all points.\n  if (a.length == b.length) {\n    // If their length is also same, they are the same.\n    return 'same';\n  } else if (a.length < b.length) {\n    // Compared array is shorter so it is a prefix of the other array.\n    return 'prefix';\n  } else {\n    // Compared array is longer so it is an extension of the other array.\n    return 'extension';\n  }\n}\n\n/**\n * @typedef {'extension'|'same'|'prefix'} module:utils/comparearrays~ArrayRelation\n */\n\n/***/ }),\n/* 49 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _isNative = __webpack_require__(237);\n\nvar _isNative2 = _interopRequireDefault(_isNative);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Gets the native function at `key` of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {string} key The key of the method to get.\n * @returns {*} Returns the function if it's native, else `undefined`.\n */\nfunction getNative(object, key) {\n  var value = object[key];\n  return (0, _isNative2.default)(value) ? value : undefined;\n}\n\nexports.default = getNative;\n\n/***/ }),\n/* 50 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; };\n\nvar _isArray = __webpack_require__(11);\n\nvar _isArray2 = _interopRequireDefault(_isArray);\n\nvar _isSymbol = __webpack_require__(44);\n\nvar _isSymbol2 = _interopRequireDefault(_isSymbol);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** Used to match property names within property paths. */\nvar reIsDeepProp = /\\.|\\[(?:[^[\\]]*|([\"'])(?:(?!\\1)[^\\\\]|\\\\.)*?\\1)\\]/,\n    reIsPlainProp = /^\\w*$/;\n\n/**\n * Checks if `value` is a property name and not a property path.\n *\n * @private\n * @param {*} value The value to check.\n * @param {Object} [object] The object to query keys on.\n * @returns {boolean} Returns `true` if `value` is a property name, else `false`.\n */\nfunction isKey(value, object) {\n  if ((0, _isArray2.default)(value)) {\n    return false;\n  }\n  var type = typeof value === 'undefined' ? 'undefined' : _typeof(value);\n  if (type == 'number' || type == 'symbol' || type == 'boolean' || value == null || (0, _isSymbol2.default)(value)) {\n    return true;\n  }\n  return reIsPlainProp.test(value) || !reIsDeepProp.test(value) || object != null && value in Object(object);\n}\n\nexports.default = isKey;\n\n/***/ }),\n/* 51 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _isSymbol = __webpack_require__(44);\n\nvar _isSymbol2 = _interopRequireDefault(_isSymbol);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** Used as references for various `Number` constants. */\nvar INFINITY = 1 / 0;\n\n/**\n * Converts `value` to a string key if it's not a string or symbol.\n *\n * @private\n * @param {*} value The value to inspect.\n * @returns {string|symbol} Returns the key.\n */\nfunction toKey(value) {\n  if (typeof value == 'string' || (0, _isSymbol2.default)(value)) {\n    return value;\n  }\n  var result = value + '';\n  return result == '0' && 1 / value == -INFINITY ? '-0' : result;\n}\n\nexports.default = toKey;\n\n/***/ }),\n/* 52 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * Performs a\n * [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)\n * comparison between two values to determine if they are equivalent.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n * @example\n *\n * var object = { 'user': 'fred' };\n * var other = { 'user': 'fred' };\n *\n * _.eq(object, object);\n * // => true\n *\n * _.eq(object, other);\n * // => false\n *\n * _.eq('a', 'a');\n * // => true\n *\n * _.eq('a', Object('a'));\n * // => false\n *\n * _.eq(NaN, NaN);\n * // => true\n */\nfunction eq(value, other) {\n  return value === other || value !== value && other !== other;\n}\n\nexports.default = eq;\n\n/***/ }),\n/* 53 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _assignIn = __webpack_require__(482);\n\nObject.defineProperty(exports, 'default', {\n  enumerable: true,\n  get: function get() {\n    return _interopRequireDefault(_assignIn).default;\n  }\n});\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/***/ }),\n/* 54 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/* global console */\n\n/**\n * @module utils/log\n */\n\n/**\n * The logging module.\n *\n * This object features two functions that should be used across CKEditor code base to log errors and warnings.\n * Despite being an overridable interface for native `console.*` this module serves also the goal to limit the\n * code size of a minified CKEditor package. During minification process the messages will be shortened and\n * links to their documentation will be logged to the console.\n *\n * All errors and warning should be documented in the following way:\n *\n *\t\t/**\n *\t\t * Error thrown when a plugin cannot be loaded due to JavaScript errors, lack of plugins with a given name, etc.\n *\t\t *\n *\t\t * @error plugin-load\n *\t\t * @param pluginName The name of the plugin that could not be loaded.\n *\t\t * @param moduleName The name of the module which tried to load this plugin.\n *\t\t * /\n *\t\tlog.error( 'plugin-load: It was not possible to load the \"{$pluginName}\" plugin in module \"{$moduleName}', {\n *\t\t\tpluginName: 'foo',\n *\t\t\tmoduleName: 'bar'\n *\t\t} );\n *\n * ### Warning vs Error vs Throw\n *\n * * Whenever a potentially incorrect situation occurs, which does not directly lead to an incorrect behavior,\n * log a warning.\n * * Whenever an incorrect situation occurs, but the app may continue working (although perhaps incorrectly),\n * log an error.\n * * Whenever it's really bad and it does not make sense to continue working, throw a {@link module:utils/ckeditorerror~CKEditorError}.\n *\n * @namespace\n */\nvar log = {\n  /**\n   * Logs an error to the console.\n   *\n   * Read more about error logging in the {@link module:utils/log} module.\n   *\n   * @param {String} message The error message in an `error-name: Error message.` format.\n   * During the minification process the \"Error message\" part will be removed to limit the code size\n   * and a link to this error documentation will be logged to the console.\n   * @param {Object} [data] Additional data describing the error.\n   */\n  error: function error(message, data) {\n    console.error(message, data);\n  },\n\n\n  /**\n   * Logs a warning to the console.\n   *\n   * Read more about error logging in the {@link module:utils/log} module.\n   *\n   * @param {String} message The warning message in a `warning-name: Warning message.` format.\n   * During the minification process the \"Warning message\" part will be removed to limit the code size\n   * and a link to this error documentation will be logged to the console.\n   * @param {Object} [data] Additional data describing the warning.\n   */\n  warn: function warn(message, data) {\n    console.warn(message, data);\n  }\n};\n\nexports.default = log;\n\n/***/ }),\n/* 55 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\n/*\r\n\tMIT License http://www.opensource.org/licenses/mit-license.php\r\n\tAuthor Tobias Koppers @sokra\r\n*/\n// css base code, injected by the css-loader\nmodule.exports = function () {\n\tvar list = [];\n\n\t// return the list of modules as css string\n\tlist.toString = function toString() {\n\t\tvar result = [];\n\t\tfor (var i = 0; i < this.length; i++) {\n\t\t\tvar item = this[i];\n\t\t\tif (item[2]) {\n\t\t\t\tresult.push(\"@media \" + item[2] + \"{\" + item[1] + \"}\");\n\t\t\t} else {\n\t\t\t\tresult.push(item[1]);\n\t\t\t}\n\t\t}\n\t\treturn result.join(\"\");\n\t};\n\n\t// import a list of modules into the list\n\tlist.i = function (modules, mediaQuery) {\n\t\tif (typeof modules === \"string\") modules = [[null, modules, \"\"]];\n\t\tvar alreadyImportedModules = {};\n\t\tfor (var i = 0; i < this.length; i++) {\n\t\t\tvar id = this[i][0];\n\t\t\tif (typeof id === \"number\") alreadyImportedModules[id] = true;\n\t\t}\n\t\tfor (i = 0; i < modules.length; i++) {\n\t\t\tvar item = modules[i];\n\t\t\t// skip already imported module\n\t\t\t// this implementation is not 100% perfect for weird media query combinations\n\t\t\t//  when a module is imported multiple times with different media queries.\n\t\t\t//  I hope this will never occur (Hey this way we have smaller bundles)\n\t\t\tif (typeof item[0] !== \"number\" || !alreadyImportedModules[item[0]]) {\n\t\t\t\tif (mediaQuery && !item[2]) {\n\t\t\t\t\titem[2] = mediaQuery;\n\t\t\t\t} else if (mediaQuery) {\n\t\t\t\t\titem[2] = \"(\" + item[2] + \") and (\" + mediaQuery + \")\";\n\t\t\t\t}\n\t\t\t\tlist.push(item);\n\t\t\t}\n\t\t}\n\t};\n\treturn list;\n};\n\n/***/ }),\n/* 56 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module engine/model/textproxy\n */\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * `TextProxy` represents a part of {@link module:engine/model/text~Text text node}.\n *\n * Since {@link module:engine/model/position~Position positions} can be placed between characters of a text node,\n * {@link module:engine/model/range~Range ranges} may contain only parts of text nodes. When {@link module:engine/model/range~Range#getItems\n * getting items}\n * contained in such range, we need to represent a part of that text node, since returning the whole text node would be incorrect.\n * `TextProxy` solves this issue.\n *\n * `TextProxy` has an API similar to {@link module:engine/model/text~Text Text} and allows to do most of the common tasks performed\n * on model nodes.\n *\n * **Note:** Some `TextProxy` instances may represent whole text node, not just a part of it.\n * See {@link module:engine/model/textproxy~TextProxy#isPartial}.\n *\n * **Note:** `TextProxy` is not an instance of {@link module:engine/model/node~Node node}. Keep this in mind when using it as a\n * parameter of methods.\n *\n * **Note:** `TextProxy` is a readonly interface. If you want to perform changes on model data represented by a `TextProxy`\n * use {@link module:engine/model/writer~writer model writer API}.\n *\n * **Note:** `TextProxy` instances are created on the fly, basing on the current state of model. Because of this, it is\n * highly unrecommended to store references to `TextProxy` instances. `TextProxy` instances are not refreshed when\n * model changes, so they might get invalidated. Instead, consider creating {@link module:engine/model/liveposition~LivePosition live\n * position}.\n *\n * `TextProxy` instances are created by {@link module:engine/model/treewalker~TreeWalker model tree walker}. You should not need to create\n * an instance of this class by your own.\n */\nvar TextProxy = function () {\n\t/**\n  * Creates a text proxy.\n  *\n  * @protected\n  * @param {module:engine/model/text~Text} textNode Text node which part is represented by this text proxy.\n  * @param {Number} offsetInText Offset in {@link module:engine/model/textproxy~TextProxy#textNode text node} from which the text proxy\n  * starts.\n  * @param {Number} length Text proxy length, that is how many text node's characters, starting from `offsetInText` it represents.\n  * @constructor\n  */\n\tfunction TextProxy(textNode, offsetInText, length) {\n\t\t_classCallCheck(this, TextProxy);\n\n\t\t/**\n   * Text node which part is represented by this text proxy.\n   *\n   * @readonly\n   * @member {module:engine/model/text~Text}\n   */\n\t\tthis.textNode = textNode;\n\n\t\tif (offsetInText < 0 || offsetInText > textNode.offsetSize) {\n\t\t\t/**\n    * Given offsetInText value is incorrect.\n    *\n    * @error model-textproxy-wrong-offsetintext\n    */\n\t\t\tthrow new _ckeditorerror2.default('model-textproxy-wrong-offsetintext: Given offsetInText value is incorrect.');\n\t\t}\n\n\t\tif (length < 0 || offsetInText + length > textNode.offsetSize) {\n\t\t\t/**\n    * Given length value is incorrect.\n    *\n    * @error model-textproxy-wrong-length\n    */\n\t\t\tthrow new _ckeditorerror2.default('model-textproxy-wrong-length: Given length value is incorrect.');\n\t\t}\n\t\t/**\n   * Text data represented by this text proxy.\n   *\n   * @readonly\n   * @member {String}\n   */\n\t\tthis.data = textNode.data.substring(offsetInText, offsetInText + length);\n\n\t\t/**\n   * Offset in {@link module:engine/model/textproxy~TextProxy#textNode text node} from which the text proxy starts.\n   *\n   * @readonly\n   * @member {Number}\n   */\n\t\tthis.offsetInText = offsetInText;\n\t}\n\n\t/**\n  * Offset at which this text proxy starts in it's parent.\n  *\n  * @see module:engine/model/node~Node#startOffset\n  * @readonly\n  * @type {Number}\n  */\n\n\n\t_createClass(TextProxy, [{\n\t\tkey: 'is',\n\n\n\t\t/**\n   * Checks whether given model tree object is of given type.\n   *\n   * Read more in {@link module:engine/model/node~Node#is}.\n   *\n   * @param {String} type\n   * @returns {Boolean}\n   */\n\t\tvalue: function is(type) {\n\t\t\treturn type == 'textProxy';\n\t\t}\n\n\t\t/**\n   * Gets path to this text proxy.\n   *\n   * @see module:engine/model/node~Node#getPath\n   * @returns {Array.<Number>}\n   */\n\n\t}, {\n\t\tkey: 'getPath',\n\t\tvalue: function getPath() {\n\t\t\tvar path = this.textNode.getPath();\n\n\t\t\tif (path.length > 0) {\n\t\t\t\tpath[path.length - 1] += this.offsetInText;\n\t\t\t}\n\n\t\t\treturn path;\n\t\t}\n\n\t\t/**\n   * Returns ancestors array of this text proxy.\n   *\n   * @param {Object} options Options object.\n   * @param {Boolean} [options.includeNode=false] When set to `true` this text proxy will be also included in parent's array.\n   * @param {Boolean} [options.parentFirst=false] When set to `true`, array will be sorted from text proxy parent to root element,\n   * otherwise root element will be the first item in the array.\n   * @returns {Array} Array with ancestors.\n   */\n\n\t}, {\n\t\tkey: 'getAncestors',\n\t\tvalue: function getAncestors() {\n\t\t\tvar options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : { includeNode: false, parentFirst: false };\n\n\t\t\tvar ancestors = [];\n\t\t\tvar parent = options.includeNode ? this : this.parent;\n\n\t\t\twhile (parent) {\n\t\t\t\tancestors[options.parentFirst ? 'push' : 'unshift'](parent);\n\t\t\t\tparent = parent.parent;\n\t\t\t}\n\n\t\t\treturn ancestors;\n\t\t}\n\n\t\t/**\n   * Checks if this text proxy has an attribute for given key.\n   *\n   * @param {String} key Key of attribute to check.\n   * @returns {Boolean} `true` if attribute with given key is set on text proxy, `false` otherwise.\n   */\n\n\t}, {\n\t\tkey: 'hasAttribute',\n\t\tvalue: function hasAttribute(key) {\n\t\t\treturn this.textNode.hasAttribute(key);\n\t\t}\n\n\t\t/**\n   * Gets an attribute value for given key or `undefined` if that attribute is not set on text proxy.\n   *\n   * @param {String} key Key of attribute to look for.\n   * @returns {*} Attribute value or `undefined`.\n   */\n\n\t}, {\n\t\tkey: 'getAttribute',\n\t\tvalue: function getAttribute(key) {\n\t\t\treturn this.textNode.getAttribute(key);\n\t\t}\n\n\t\t/**\n   * Returns iterator that iterates over this node's attributes. Attributes are returned as arrays containing two\n   * items. First one is attribute key and second is attribute value.\n   *\n   * This format is accepted by native `Map` object and also can be passed in `Node` constructor.\n   *\n   * @returns {Iterable.<*>}\n   */\n\n\t}, {\n\t\tkey: 'getAttributes',\n\t\tvalue: function getAttributes() {\n\t\t\treturn this.textNode.getAttributes();\n\t\t}\n\n\t\t/**\n   * Returns iterator that iterates over this node's attribute keys.\n   *\n   * @returns {Iterator.<String>}\n   */\n\n\t}, {\n\t\tkey: 'getAttributeKeys',\n\t\tvalue: function getAttributeKeys() {\n\t\t\treturn this.textNode.getAttributeKeys();\n\t\t}\n\t}, {\n\t\tkey: 'startOffset',\n\t\tget: function get() {\n\t\t\treturn this.textNode.startOffset !== null ? this.textNode.startOffset + this.offsetInText : null;\n\t\t}\n\n\t\t/**\n   * Offset size of this text proxy. Equal to the number of characters represented by the text proxy.\n   *\n   * @see module:engine/model/node~Node#offsetSize\n   * @readonly\n   * @type {Number}\n   */\n\n\t}, {\n\t\tkey: 'offsetSize',\n\t\tget: function get() {\n\t\t\treturn this.data.length;\n\t\t}\n\n\t\t/**\n   * Offset at which this text proxy ends in it's parent.\n   *\n   * @see module:engine/model/node~Node#endOffset\n   * @readonly\n   * @type {Number}\n   */\n\n\t}, {\n\t\tkey: 'endOffset',\n\t\tget: function get() {\n\t\t\treturn this.startOffset !== null ? this.startOffset + this.offsetSize : null;\n\t\t}\n\n\t\t/**\n   * Flag indicating whether `TextProxy` instance covers only part of the original {@link module:engine/model/text~Text text node}\n   * (`true`) or the whole text node (`false`).\n   *\n   * This is `false` when text proxy starts at the very beginning of {@link module:engine/model/textproxy~TextProxy#textNode textNode}\n   * ({@link module:engine/model/textproxy~TextProxy#offsetInText offsetInText} equals `0`) and text proxy sizes is equal to\n   * text node size.\n   *\n   * @readonly\n   * @type {Boolean}\n   */\n\n\t}, {\n\t\tkey: 'isPartial',\n\t\tget: function get() {\n\t\t\treturn this.offsetSize !== this.textNode.offsetSize;\n\t\t}\n\n\t\t/**\n   * Parent of this text proxy, which is same as parent of text node represented by this text proxy.\n   *\n   * @readonly\n   * @type {module:engine/model/element~Element|module:engine/model/documentfragment~DocumentFragment|null}\n   */\n\n\t}, {\n\t\tkey: 'parent',\n\t\tget: function get() {\n\t\t\treturn this.textNode.parent;\n\t\t}\n\n\t\t/**\n   * Root of this text proxy, which is same as root of text node represented by this text proxy.\n   *\n   * @readonly\n   * @type {module:engine/model/node~Node|module:engine/model/documentfragment~DocumentFragment}\n   */\n\n\t}, {\n\t\tkey: 'root',\n\t\tget: function get() {\n\t\t\treturn this.textNode.root;\n\t\t}\n\n\t\t/**\n   * {@link module:engine/model/document~Document Document} that owns text node represented by this text proxy or `null` if the text node\n   * has no parent or is inside a {@link module:engine/model/documentfragment~DocumentFragment DocumentFragment}.\n   *\n   * @readonly\n   * @type {module:engine/model/document~Document|null}\n   */\n\n\t}, {\n\t\tkey: 'document',\n\t\tget: function get() {\n\t\t\treturn this.textNode.document;\n\t\t}\n\t}]);\n\n\treturn TextProxy;\n}();\n\nexports.default = TextProxy;\n\n/***/ }),\n/* 57 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.INLINE_FILLER = exports.INLINE_FILLER_LENGTH = exports.NBSP_FILLER = exports.BR_FILLER = undefined;\nexports.startsWithFiller = startsWithFiller;\nexports.isInlineFiller = isInlineFiller;\nexports.getDataWithoutFiller = getDataWithoutFiller;\nexports.isBlockFiller = isBlockFiller;\nexports.injectQuirksHandling = injectQuirksHandling;\n\nvar _keyboard = __webpack_require__(21);\n\n/**\n * Set of utils related to block and inline fillers handling.\n *\n * Browsers do not allow to put caret in elements which does not have height. Because of it, we need to fill all\n * empty elements which should be selectable with elements or characters called \"fillers\". Unfortunately there is no one\n * universal filler, this is why two types are uses:\n *\n * * Block filler is an element which fill block elements, like `<p>`. CKEditor uses `<br>` as a block filler during the editing,\n * as browsers do natively. So instead of an empty `<p>` there will be `<p><br></p>`. The advantage of block filler is that\n * it is transparent for the selection, so when the caret is before the `<br>` and user presses right arrow he will be\n * moved to the next paragraph, not after the `<br>`. The disadvantage is that it breaks a block, so it can not be used\n * in the middle of a line of text. The {@link module:engine/view/filler~BR_FILLER `<br>` filler} can be replaced with any other\n * character in the data output, for instance {@link module:engine/view/filler~NBSP_FILLER non-breaking space}.\n *\n * * Inline filler is a filler which does not break a line of text, so it can be used inside the text, for instance in the empty\n * `<b>` surrendered by text: `foo<b></b>bar`, if we want to put the caret there. CKEditor uses a sequence of the zero-width\n * spaces as an {@link module:engine/view/filler~INLINE_FILLER inline filler} having the predetermined\n * {@link module:engine/view/filler~INLINE_FILLER_LENGTH length}. A sequence is used, instead of a single character to\n * avoid treating random zero-width spaces as the inline filler. Disadvantage of the inline filler is that it is not\n * transparent for the selection. The arrow key moves the caret between zero-width spaces characters, so the additional\n * code is needed to handle the caret.\n *\n * Both inline and block fillers are handled by the {@link module:engine/view/renderer~Renderer renderer} and are not present in the\n * view.\n *\n * @module engine/view/filler\n */\n\n/**\n * `<br> filler creator. This is a function which creates `<br data-cke-filler=\"true\">` element.\n * It defines how the filler is created.\n *\n * @see module:engine/view/filler~NBSP_FILLER\n * @function\n */\nvar BR_FILLER = exports.BR_FILLER = function BR_FILLER(domDocument) {\n  var fillerBr = domDocument.createElement('br');\n  fillerBr.dataset.ckeFiller = true;\n\n  return fillerBr;\n};\n\n/**\n * Non-breaking space filler creator. This is a function which creates `&nbsp;` text node.\n * It defines how the filler is created.\n *\n * @see module:engine/view/filler~BR_FILLER\n * @function\n */\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/* globals window, Range, Text */\n\nvar NBSP_FILLER = exports.NBSP_FILLER = function NBSP_FILLER(domDocument) {\n  return domDocument.createTextNode('\\xA0');\n};\n\n/**\n * Length of the {@link module:engine/view/filler~INLINE_FILLER INLINE_FILLER}.\n */\nvar INLINE_FILLER_LENGTH = exports.INLINE_FILLER_LENGTH = 7;\n\n/**\n * Inline filler which is sequence of the zero width spaces.\n */\nvar INLINE_FILLER = exports.INLINE_FILLER = '';\n\nfor (var i = 0; i < INLINE_FILLER_LENGTH; i++) {\n  exports.INLINE_FILLER = INLINE_FILLER += '\\u200B';\n}\n\n/**\n * Checks if the node is a text node which starts with the {@link module:engine/view/filler~INLINE_FILLER inline filler}.\n *\n *\t\tstartsWithFiller( document.createTextNode( INLINE_FILLER ) ); // true\n *\t\tstartsWithFiller( document.createTextNode( INLINE_FILLER + 'foo' ) ); // true\n *\t\tstartsWithFiller( document.createTextNode( 'foo' ) ); // false\n *\t\tstartsWithFiller( document.createElement( 'p' ) ); // false\n *\n * @param {Node} domNode DOM node.\n * @returns {Boolean} True if the text node starts with the {@link module:engine/view/filler~INLINE_FILLER inline filler}.\n */\nfunction startsWithFiller(domNode) {\n  return domNode instanceof Text && domNode.data.substr(0, INLINE_FILLER_LENGTH) === INLINE_FILLER;\n}\n\n/**\n * Checks if the text node contains only the {@link module:engine/view/filler~INLINE_FILLER inline filler}.\n *\n *\t\tisInlineFiller( document.createTextNode( INLINE_FILLER ) ); // true\n *\t\tisInlineFiller( document.createTextNode( INLINE_FILLER + 'foo' ) ); // false\n *\n * @param {Text} domText DOM text node.\n * @returns {Boolean} True if the text node contains only the {@link module:engine/view/filler~INLINE_FILLER inline filler}.\n */\nfunction isInlineFiller(domText) {\n  return domText.data.length == INLINE_FILLER_LENGTH && startsWithFiller(domText);\n}\n\n/**\n * Get string data from the text node, removing an {@link module:engine/view/filler~INLINE_FILLER inline filler} from it,\n * if text node contains it.\n *\n *\t\tgetDataWithoutFiller( document.createTextNode( INLINE_FILLER + 'foo' ) ) == 'foo' // true\n *\t\tgetDataWithoutFiller( document.createTextNode( 'foo' ) ) == 'foo' // true\n *\n * @param {Text} domText DOM text node, possible with inline filler.\n * @returns {String} Data without filler.\n */\nfunction getDataWithoutFiller(domText) {\n  if (startsWithFiller(domText)) {\n    return domText.data.slice(INLINE_FILLER_LENGTH);\n  } else {\n    return domText.data;\n  }\n}\n\n// Cache block fillers templates to improve performance.\nvar templateBlockFillers = new WeakMap();\n\n/**\n * Checks if the node is an instance of the block filler of the given type.\n *\n *\t\tconst brFillerInstance = BR_FILLER( document );\n *\t\tisBlockFiller( brFillerInstance, BR_FILLER ); // true\n *\n * @param {Node} domNode DOM node to check.\n * @param {Function} blockFiller Block filler creator.\n * @returns {Boolean} True if text node contains only {@link module:engine/view/filler~INLINE_FILLER inline filler}.\n */\nfunction isBlockFiller(domNode, blockFiller) {\n  var templateBlockFiller = templateBlockFillers.get(blockFiller);\n\n  if (!templateBlockFiller) {\n    templateBlockFiller = blockFiller(window.document);\n    templateBlockFillers.set(blockFiller, templateBlockFiller);\n  }\n\n  return domNode.isEqualNode(templateBlockFiller);\n}\n\n/**\n * Assign key observer which move cursor from the end of the inline filler to the begging of it when\n * the left arrow is pressed, so the filler does not break navigation.\n *\n * @param {module:engine/view/document~Document} document Document instance we should inject quirks handling on.\n */\nfunction injectQuirksHandling(document) {\n  document.on('keydown', jumpOverInlineFiller);\n}\n\n// Move cursor from the end of the inline filler to the begging of it when, so the filler does not break navigation.\nfunction jumpOverInlineFiller(evt, data) {\n  if (data.keyCode == _keyboard.keyCodes.arrowleft) {\n    var domSelection = data.domTarget.ownerDocument.defaultView.getSelection();\n\n    if (domSelection.rangeCount == 1 && domSelection.getRangeAt(0).collapsed) {\n      var domParent = domSelection.getRangeAt(0).startContainer;\n      var domOffset = domSelection.getRangeAt(0).startOffset;\n\n      if (startsWithFiller(domParent) && domOffset <= INLINE_FILLER_LENGTH) {\n        var domRange = new Range();\n        domRange.setStart(domParent, 0);\n        domRange.collapse(true);\n        domSelection.removeAllRanges();\n        domSelection.addRange(domRange);\n      }\n    }\n  }\n}\n\n/***/ }),\n/* 58 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _observer = __webpack_require__(47);\n\nvar _observer2 = _interopRequireDefault(_observer);\n\nvar _domeventdata = __webpack_require__(118);\n\nvar _domeventdata2 = _interopRequireDefault(_domeventdata);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module engine/view/observer/domeventobserver\n */\n\n/**\n * Base class for DOM event observers. This class handles\n * {@link module:engine/view/observer/observer~Observer#observe adding} listeners to DOM elements,\n * {@link module:engine/view/observer/observer~Observer#disable disabling} and\n * {@link module:engine/view/observer/observer~Observer#enable re-enabling} events.\n * Child class needs to define\n * {@link module:engine/view/observer/domeventobserver~DomEventObserver#domEventType DOM event type} and\n * {@link module:engine/view/observer/domeventobserver~DomEventObserver#onDomEvent callback}.\n *\n * For instance:\n *\n *\t\tclass ClickObserver extends DomEventObserver {\n *\t\t\t// It can also be defined as a normal property in the constructor.\n *\t\t\tget domEventType() {\n *\t\t\t\treturn 'click';\n *\t\t\t}\n *\n *\t\t\tonDomEvent( domEvent ) {\n *\t\t\t\tthis.fire( 'click', domEvent );\n *\t\t\t}\n *\t\t}\n *\n * @extends module:engine/view/observer/observer~Observer\n */\nvar DomEventObserver = function (_Observer) {\n\t_inherits(DomEventObserver, _Observer);\n\n\t/**\n  * Type of the DOM event the observer should listen on. Array of types can be defined\n  * if the obsever should listen to multiple DOM events.\n  *\n  * @readonly\n  * @member {String|Array.<String>} #domEventType\n  */\n\n\t/**\n  * Callback which should be called when the DOM event occurred. Note that the callback will not be called if\n  * observer {@link #isEnabled is not enabled}.\n  *\n  * @see #domEventType\n  * @abstract\n  * @method #onDomEvent\n  */\n\n\t/**\n  * @inheritDoc\n  */\n\tfunction DomEventObserver(document) {\n\t\t_classCallCheck(this, DomEventObserver);\n\n\t\t/**\n   * If set to `true` DOM events will be listened on the capturing phase.\n   * Default value is `false`.\n   *\n   * @member {Boolean}\n   */\n\t\tvar _this = _possibleConstructorReturn(this, (DomEventObserver.__proto__ || Object.getPrototypeOf(DomEventObserver)).call(this, document));\n\n\t\t_this.useCapture = false;\n\t\treturn _this;\n\t}\n\n\t/**\n  * @inheritDoc\n  */\n\n\n\t_createClass(DomEventObserver, [{\n\t\tkey: 'observe',\n\t\tvalue: function observe(domElement) {\n\t\t\tvar _this2 = this;\n\n\t\t\tvar types = typeof this.domEventType == 'string' ? [this.domEventType] : this.domEventType;\n\n\t\t\ttypes.forEach(function (type) {\n\t\t\t\t_this2.listenTo(domElement, type, function (eventInfo, domEvent) {\n\t\t\t\t\tif (_this2.isEnabled) {\n\t\t\t\t\t\t_this2.onDomEvent(domEvent);\n\t\t\t\t\t}\n\t\t\t\t}, { useCapture: _this2.useCapture });\n\t\t\t});\n\t\t}\n\n\t\t/**\n   * Calls `Document#fire()` if observer {@link #isEnabled is enabled}.\n   *\n   * @see module:utils/emittermixin~EmitterMixin#fire\n   * @param {String} eventType The event type (name).\n   * @param {Event} domEvent The DOM event.\n   * @param {Object} [additionalData] The additional data which should extend the\n   * {@link module:engine/view/observer/domeventdata~DomEventData event data} object.\n   */\n\n\t}, {\n\t\tkey: 'fire',\n\t\tvalue: function fire(eventType, domEvent, additionalData) {\n\t\t\tif (this.isEnabled) {\n\t\t\t\tthis.document.fire(eventType, new _domeventdata2.default(this.document, domEvent, additionalData));\n\t\t\t}\n\t\t}\n\t}]);\n\n\treturn DomEventObserver;\n}(_observer2.default);\n\nexports.default = DomEventObserver;\n\n/***/ }),\n/* 59 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/* globals window, document */\n\n/**\n * @module utils/dom/global\n */\n\n/**\n * A helper (module) giving an access to the global DOM objects such as `window` and\n * `document`. Accessing these objects using this helper allows easy and bulletproof\n * testing, i.e. stubbing native properties:\n *\n *\t\timport global from 'ckeditor5/utils/dom/global.js';\n *\n *\t\t// This stub will work for any code using global module.\n *\t\ttestUtils.sinon.stub( global, 'window', {\n *\t\t\tinnerWidth: 10000\n *\t\t} );\n *\n *\t\tconsole.log( global.window.innerWidth );\n */\nexports.default = { window: window, document: document };\n\n/***/ }),\n/* 60 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/* global setTimeout, clearTimeout */\n\n/**\n * @module utils/focustracker\n */\n\nvar _emittermixin = __webpack_require__(79);\n\nvar _emittermixin2 = _interopRequireDefault(_emittermixin);\n\nvar _observablemixin = __webpack_require__(31);\n\nvar _observablemixin2 = _interopRequireDefault(_observablemixin);\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nvar _mix = __webpack_require__(4);\n\nvar _mix2 = _interopRequireDefault(_mix);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * Allows observing a group of `HTMLElement`s whether at least one of them is focused.\n *\n * Used by the {@link module:core/editor/editor~Editor} in order to track whether the focus is still within the application,\n * or were used outside of its UI.\n *\n * **Note** `focus` and `blur` listeners use event capturing, so it is only needed to register wrapper `HTMLElement`\n * which contain other `focusable` elements. But note that this wrapper element has to be focusable too\n * (have e.g. `tabindex=\"-1\"`).\n *\n * @mixes module:utils/dom/emittermixin~EmitterMixin\n * @mixes module:utils/observablemixin~ObservableMixin\n */\nvar FocusTracker = function () {\n\tfunction FocusTracker() {\n\t\t_classCallCheck(this, FocusTracker);\n\n\t\t/**\n   * True when one of the registered elements is focused.\n   *\n   * @readonly\n   * @observable\n   * @member {Boolean} #isFocused\n   */\n\t\tthis.set('isFocused', false);\n\n\t\t/**\n   * Currently focused element.\n   *\n   * @readonly\n   * @member {HTMLElement}\n   */\n\t\tthis.focusedElement = null;\n\n\t\t/**\n   * List of registered elements.\n   *\n   * @private\n   * @member {Set.<HTMLElement>}\n   */\n\t\tthis._elements = new Set();\n\n\t\t/**\n   * Event loop timeout.\n   *\n   * @private\n   * @member {Number}\n   */\n\t\tthis._nextEventLoopTimeout = null;\n\t}\n\n\t/**\n  * Starts tracking the specified element.\n  *\n  * @param {HTMLElement} element\n  */\n\n\n\t_createClass(FocusTracker, [{\n\t\tkey: 'add',\n\t\tvalue: function add(element) {\n\t\t\tvar _this = this;\n\n\t\t\tif (this._elements.has(element)) {\n\t\t\t\tthrow new _ckeditorerror2.default('focusTracker-add-element-already-exist');\n\t\t\t}\n\n\t\t\tthis.listenTo(element, 'focus', function () {\n\t\t\t\treturn _this._focus(element);\n\t\t\t}, { useCapture: true });\n\t\t\tthis.listenTo(element, 'blur', function () {\n\t\t\t\treturn _this._blur();\n\t\t\t}, { useCapture: true });\n\t\t\tthis._elements.add(element);\n\t\t}\n\n\t\t/**\n   * Stops tracking the specified element and stops listening on this element.\n   *\n   * @param {HTMLElement} element\n   */\n\n\t}, {\n\t\tkey: 'remove',\n\t\tvalue: function remove(element) {\n\t\t\tif (element === this.focusedElement) {\n\t\t\t\tthis._blur(element);\n\t\t\t}\n\n\t\t\tif (this._elements.has(element)) {\n\t\t\t\tthis.stopListening(element);\n\t\t\t\tthis._elements.delete(element);\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Stores currently focused element and set {#isFocused} as `true`.\n   *\n   * @private\n   * @param {HTMLElement} element Element which has been focused.\n   */\n\n\t}, {\n\t\tkey: '_focus',\n\t\tvalue: function _focus(element) {\n\t\t\tclearTimeout(this._nextEventLoopTimeout);\n\n\t\t\tthis.focusedElement = element;\n\t\t\tthis.isFocused = true;\n\t\t}\n\n\t\t/**\n   * Clears currently focused element and set {@link #isFocused} as `false`.\n   * This method uses `setTimeout` to change order of fires `blur` and `focus` events.\n   *\n   * @private\n   * @fires blur\n   */\n\n\t}, {\n\t\tkey: '_blur',\n\t\tvalue: function _blur() {\n\t\t\tvar _this2 = this;\n\n\t\t\tthis._nextEventLoopTimeout = setTimeout(function () {\n\t\t\t\t_this2.focusedElement = null;\n\t\t\t\t_this2.isFocused = false;\n\t\t\t}, 0);\n\t\t}\n\n\t\t/**\n   * @event focus\n   */\n\n\t\t/**\n   * @event blur\n   */\n\n\t}]);\n\n\treturn FocusTracker;\n}();\n\nexports.default = FocusTracker;\n\n\n(0, _mix2.default)(FocusTracker, _emittermixin2.default);\n(0, _mix2.default)(FocusTracker, _observablemixin2.default);\n\n/***/ }),\n/* 61 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module utils/keystrokehandler\n */\n\nvar _emittermixin = __webpack_require__(79);\n\nvar _emittermixin2 = _interopRequireDefault(_emittermixin);\n\nvar _keyboard = __webpack_require__(21);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * Keystroke handler registers keystrokes so the callbacks associated\n * with these keystrokes will be executed if the matching `keydown` is fired\n * by a defined emitter.\n *\n *\t\tconst handler = new KeystrokeHandler();\n *\n *\t\thandler.listenTo( emitter );\n *\n *\t\thandler.set( 'ctrl + a', ( keyEventData, cancel ) => {\n *\t\t\tconsole.log( 'ctrl + a has been pressed' );\n *\t\t\tcancel();\n *\t\t} );\n */\nvar KeystrokeHandler = function () {\n\t/**\n  * Creates an instance of the keystroke handler.\n  */\n\tfunction KeystrokeHandler() {\n\t\t_classCallCheck(this, KeystrokeHandler);\n\n\t\t/**\n   * Listener used to listen to events for easier keystroke handler destruction.\n   *\n   * @private\n   * @member {module:utils/dom/emittermixin~Emitter}\n   */\n\t\tthis._listener = Object.create(_emittermixin2.default);\n\n\t\t/**\n   * Map of the defined keystrokes. Keystroke codes are the keys.\n   *\n   * @private\n   * @member {Map}\n   */\n\t\tthis._keystrokes = new Map();\n\t}\n\n\t/**\n  * Starts listening for `keydown` events from a given emitter.\n  *\n  * @param {module:utils/emittermixin~Emitter} emitter\n  */\n\n\n\t_createClass(KeystrokeHandler, [{\n\t\tkey: 'listenTo',\n\t\tvalue: function listenTo(emitter) {\n\t\t\tvar _this = this;\n\n\t\t\tthis._listener.listenTo(emitter, 'keydown', function (evt, data) {\n\t\t\t\t_this.press(data);\n\t\t\t});\n\t\t}\n\n\t\t/**\n   * Registers a handler for the specified keystroke.\n   *\n   * @param {String|Array.<String|Number>} keystroke Keystroke defined in a format accepted by\n   * the {@link module:utils/keyboard~parseKeystroke} function.\n   * @param {Function} callback A function called with the\n   * {@link module:engine/view/observer/keyobserver~KeyEventData key event data} object and\n   * a helper to both `preventDefault` and `stopPropagation` of the event.\n   */\n\n\t}, {\n\t\tkey: 'set',\n\t\tvalue: function set(keystroke, callback) {\n\t\t\tvar keyCode = (0, _keyboard.parseKeystroke)(keystroke);\n\t\t\tvar callbacks = this._keystrokes.get(keyCode);\n\n\t\t\tif (callbacks) {\n\t\t\t\tcallbacks.push(callback);\n\t\t\t} else {\n\t\t\t\tthis._keystrokes.set(keyCode, [callback]);\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Triggers a keystroke handler for a specified key combination, if such a keystroke was {@link #set defined}.\n   *\n   * @param {module:engine/view/observer/keyobserver~KeyEventData} keyEventData Key event data.\n   * @returns {Boolean} Whether the keystroke was handled.\n   */\n\n\t}, {\n\t\tkey: 'press',\n\t\tvalue: function press(keyEventData) {\n\t\t\tvar keyCode = (0, _keyboard.getCode)(keyEventData);\n\t\t\tvar callbacks = this._keystrokes.get(keyCode);\n\n\t\t\tif (!callbacks) {\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\tvar _didIteratorError = false;\n\t\t\tvar _iteratorError = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator = callbacks[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\tvar callback = _step.value;\n\n\t\t\t\t\tcallback(keyEventData, function () {\n\t\t\t\t\t\tkeyEventData.preventDefault();\n\t\t\t\t\t\tkeyEventData.stopPropagation();\n\t\t\t\t\t});\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError = true;\n\t\t\t\t_iteratorError = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn true;\n\t\t}\n\n\t\t/**\n   * Destroys the keystroke handler.\n   */\n\n\t}, {\n\t\tkey: 'destroy',\n\t\tvalue: function destroy() {\n\t\t\tthis._keystrokes = new Map();\n\t\t\tthis._listener.stopListening();\n\t\t}\n\t}]);\n\n\treturn KeystrokeHandler;\n}();\n\nexports.default = KeystrokeHandler;\n\n/***/ }),\n/* 62 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _eq = __webpack_require__(52);\n\nvar _eq2 = _interopRequireDefault(_eq);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/**\n * Assigns `value` to `key` of `object` if the existing value is not equivalent\n * using [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)\n * for equality comparisons.\n *\n * @private\n * @param {Object} object The object to modify.\n * @param {string} key The key of the property to assign.\n * @param {*} value The value to assign.\n */\nfunction assignValue(object, key, value) {\n  var objValue = object[key];\n  if (!(hasOwnProperty.call(object, key) && (0, _eq2.default)(objValue, value)) || value === undefined && !(key in object)) {\n    object[key] = value;\n  }\n}\n\nexports.default = assignValue;\n\n/***/ }),\n/* 63 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _SetCache = __webpack_require__(81);\n\nvar _SetCache2 = _interopRequireDefault(_SetCache);\n\nvar _arrayIncludes = __webpack_require__(125);\n\nvar _arrayIncludes2 = _interopRequireDefault(_arrayIncludes);\n\nvar _arrayIncludesWith = __webpack_require__(126);\n\nvar _arrayIncludesWith2 = _interopRequireDefault(_arrayIncludesWith);\n\nvar _arrayMap = __webpack_require__(26);\n\nvar _arrayMap2 = _interopRequireDefault(_arrayMap);\n\nvar _baseUnary = __webpack_require__(134);\n\nvar _baseUnary2 = _interopRequireDefault(_baseUnary);\n\nvar _cacheHas = __webpack_require__(136);\n\nvar _cacheHas2 = _interopRequireDefault(_cacheHas);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** Used as the size to enable large array optimizations. */\nvar LARGE_ARRAY_SIZE = 200;\n\n/**\n * The base implementation of methods like `_.difference` without support\n * for excluding multiple arrays or iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {Array} values The values to exclude.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of filtered values.\n */\nfunction baseDifference(array, values, iteratee, comparator) {\n  var index = -1,\n      includes = _arrayIncludes2.default,\n      isCommon = true,\n      length = array.length,\n      result = [],\n      valuesLength = values.length;\n\n  if (!length) {\n    return result;\n  }\n  if (iteratee) {\n    values = (0, _arrayMap2.default)(values, (0, _baseUnary2.default)(iteratee));\n  }\n  if (comparator) {\n    includes = _arrayIncludesWith2.default;\n    isCommon = false;\n  } else if (values.length >= LARGE_ARRAY_SIZE) {\n    includes = _cacheHas2.default;\n    isCommon = false;\n    values = new _SetCache2.default(values);\n  }\n  outer: while (++index < length) {\n    var value = array[index],\n        computed = iteratee ? iteratee(value) : value;\n\n    value = comparator || value !== 0 ? value : 0;\n    if (isCommon && computed === computed) {\n      var valuesIndex = valuesLength;\n      while (valuesIndex--) {\n        if (values[valuesIndex] === computed) {\n          continue outer;\n        }\n      }\n      result.push(value);\n    } else if (!includes(values, computed, comparator)) {\n      result.push(value);\n    }\n  }\n  return result;\n}\n\nexports.default = baseDifference;\n\n/***/ }),\n/* 64 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseHas = __webpack_require__(201);\n\nvar _baseHas2 = _interopRequireDefault(_baseHas);\n\nvar _baseKeys = __webpack_require__(421);\n\nvar _baseKeys2 = _interopRequireDefault(_baseKeys);\n\nvar _indexKeys = __webpack_require__(209);\n\nvar _indexKeys2 = _interopRequireDefault(_indexKeys);\n\nvar _isArrayLike = __webpack_require__(95);\n\nvar _isArrayLike2 = _interopRequireDefault(_isArrayLike);\n\nvar _isIndex = __webpack_require__(35);\n\nvar _isIndex2 = _interopRequireDefault(_isIndex);\n\nvar _isPrototype = __webpack_require__(91);\n\nvar _isPrototype2 = _interopRequireDefault(_isPrototype);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Creates an array of the own enumerable property names of `object`.\n *\n * **Note:** Non-object values are coerced to objects. See the\n * [ES spec](http://ecma-international.org/ecma-262/6.0/#sec-object.keys)\n * for more details.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n * @example\n *\n * function Foo() {\n *   this.a = 1;\n *   this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.keys(new Foo);\n * // => ['a', 'b'] (iteration order is not guaranteed)\n *\n * _.keys('hi');\n * // => ['0', '1']\n */\nfunction keys(object) {\n  var isProto = (0, _isPrototype2.default)(object);\n  if (!(isProto || (0, _isArrayLike2.default)(object))) {\n    return (0, _baseKeys2.default)(object);\n  }\n  var indexes = (0, _indexKeys2.default)(object),\n      skipIndexes = !!indexes,\n      result = indexes || [],\n      length = result.length;\n\n  for (var key in object) {\n    if ((0, _baseHas2.default)(object, key) && !(skipIndexes && (key == 'length' || (0, _isIndex2.default)(key, length))) && !(isProto && key == 'constructor')) {\n      result.push(key);\n    }\n  }\n  return result;\n}\n\nexports.default = keys;\n\n/***/ }),\n/* 65 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = uid;\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/uid\n */\n\n/**\n * Returns a unique id. This id is a number (starting from 1) which will never get repeated on successive calls\n * to this method.\n *\n * @returns {String} A number representing the id.\n */\nfunction uid() {\n  var uuid = 'e'; // Make sure that id does not start with number.\n\n  for (var i = 0; i < 8; i++) {\n    uuid += Math.floor((1 + Math.random()) * 0x10000).toString(16).substring(1);\n  }\n\n  return uuid;\n}\n\n/***/ }),\n/* 66 */\n/***/ (function(module, exports) {\n\n/*\r\n\tMIT License http://www.opensource.org/licenses/mit-license.php\r\n\tAuthor Tobias Koppers @sokra\r\n*/\r\nvar stylesInDom = {},\r\n\tmemoize = function(fn) {\r\n\t\tvar memo;\r\n\t\treturn function () {\r\n\t\t\tif (typeof memo === \"undefined\") memo = fn.apply(this, arguments);\r\n\t\t\treturn memo;\r\n\t\t};\r\n\t},\r\n\tisOldIE = memoize(function() {\r\n\t\treturn /msie [6-9]\\b/.test(window.navigator.userAgent.toLowerCase());\r\n\t}),\r\n\tgetHeadElement = memoize(function () {\r\n\t\treturn document.head || document.getElementsByTagName(\"head\")[0];\r\n\t}),\r\n\tsingletonElement = null,\r\n\tsingletonCounter = 0,\r\n\tstyleElementsInsertedAtTop = [];\r\n\r\nmodule.exports = function(list, options) {\r\n\tif(typeof DEBUG !== \"undefined\" && DEBUG) {\r\n\t\tif(typeof document !== \"object\") throw new Error(\"The style-loader cannot be used in a non-browser environment\");\r\n\t}\r\n\r\n\toptions = options || {};\r\n\t// Force single-tag solution on IE6-9, which has a hard limit on the # of <style>\r\n\t// tags it will allow on a page\r\n\tif (typeof options.singleton === \"undefined\") options.singleton = isOldIE();\r\n\r\n\t// By default, add <style> tags to the bottom of <head>.\r\n\tif (typeof options.insertAt === \"undefined\") options.insertAt = \"bottom\";\r\n\r\n\tvar styles = listToStyles(list);\r\n\taddStylesToDom(styles, options);\r\n\r\n\treturn function update(newList) {\r\n\t\tvar mayRemove = [];\r\n\t\tfor(var i = 0; i < styles.length; i++) {\r\n\t\t\tvar item = styles[i];\r\n\t\t\tvar domStyle = stylesInDom[item.id];\r\n\t\t\tdomStyle.refs--;\r\n\t\t\tmayRemove.push(domStyle);\r\n\t\t}\r\n\t\tif(newList) {\r\n\t\t\tvar newStyles = listToStyles(newList);\r\n\t\t\taddStylesToDom(newStyles, options);\r\n\t\t}\r\n\t\tfor(var i = 0; i < mayRemove.length; i++) {\r\n\t\t\tvar domStyle = mayRemove[i];\r\n\t\t\tif(domStyle.refs === 0) {\r\n\t\t\t\tfor(var j = 0; j < domStyle.parts.length; j++)\r\n\t\t\t\t\tdomStyle.parts[j]();\r\n\t\t\t\tdelete stylesInDom[domStyle.id];\r\n\t\t\t}\r\n\t\t}\r\n\t};\r\n}\r\n\r\nfunction addStylesToDom(styles, options) {\r\n\tfor(var i = 0; i < styles.length; i++) {\r\n\t\tvar item = styles[i];\r\n\t\tvar domStyle = stylesInDom[item.id];\r\n\t\tif(domStyle) {\r\n\t\t\tdomStyle.refs++;\r\n\t\t\tfor(var j = 0; j < domStyle.parts.length; j++) {\r\n\t\t\t\tdomStyle.parts[j](item.parts[j]);\r\n\t\t\t}\r\n\t\t\tfor(; j < item.parts.length; j++) {\r\n\t\t\t\tdomStyle.parts.push(addStyle(item.parts[j], options));\r\n\t\t\t}\r\n\t\t} else {\r\n\t\t\tvar parts = [];\r\n\t\t\tfor(var j = 0; j < item.parts.length; j++) {\r\n\t\t\t\tparts.push(addStyle(item.parts[j], options));\r\n\t\t\t}\r\n\t\t\tstylesInDom[item.id] = {id: item.id, refs: 1, parts: parts};\r\n\t\t}\r\n\t}\r\n}\r\n\r\nfunction listToStyles(list) {\r\n\tvar styles = [];\r\n\tvar newStyles = {};\r\n\tfor(var i = 0; i < list.length; i++) {\r\n\t\tvar item = list[i];\r\n\t\tvar id = item[0];\r\n\t\tvar css = item[1];\r\n\t\tvar media = item[2];\r\n\t\tvar sourceMap = item[3];\r\n\t\tvar part = {css: css, media: media, sourceMap: sourceMap};\r\n\t\tif(!newStyles[id])\r\n\t\t\tstyles.push(newStyles[id] = {id: id, parts: [part]});\r\n\t\telse\r\n\t\t\tnewStyles[id].parts.push(part);\r\n\t}\r\n\treturn styles;\r\n}\r\n\r\nfunction insertStyleElement(options, styleElement) {\r\n\tvar head = getHeadElement();\r\n\tvar lastStyleElementInsertedAtTop = styleElementsInsertedAtTop[styleElementsInsertedAtTop.length - 1];\r\n\tif (options.insertAt === \"top\") {\r\n\t\tif(!lastStyleElementInsertedAtTop) {\r\n\t\t\thead.insertBefore(styleElement, head.firstChild);\r\n\t\t} else if(lastStyleElementInsertedAtTop.nextSibling) {\r\n\t\t\thead.insertBefore(styleElement, lastStyleElementInsertedAtTop.nextSibling);\r\n\t\t} else {\r\n\t\t\thead.appendChild(styleElement);\r\n\t\t}\r\n\t\tstyleElementsInsertedAtTop.push(styleElement);\r\n\t} else if (options.insertAt === \"bottom\") {\r\n\t\thead.appendChild(styleElement);\r\n\t} else {\r\n\t\tthrow new Error(\"Invalid value for parameter 'insertAt'. Must be 'top' or 'bottom'.\");\r\n\t}\r\n}\r\n\r\nfunction removeStyleElement(styleElement) {\r\n\tstyleElement.parentNode.removeChild(styleElement);\r\n\tvar idx = styleElementsInsertedAtTop.indexOf(styleElement);\r\n\tif(idx >= 0) {\r\n\t\tstyleElementsInsertedAtTop.splice(idx, 1);\r\n\t}\r\n}\r\n\r\nfunction createStyleElement(options) {\r\n\tvar styleElement = document.createElement(\"style\");\r\n\tstyleElement.type = \"text/css\";\r\n\tinsertStyleElement(options, styleElement);\r\n\treturn styleElement;\r\n}\r\n\r\nfunction createLinkElement(options) {\r\n\tvar linkElement = document.createElement(\"link\");\r\n\tlinkElement.rel = \"stylesheet\";\r\n\tinsertStyleElement(options, linkElement);\r\n\treturn linkElement;\r\n}\r\n\r\nfunction addStyle(obj, options) {\r\n\tvar styleElement, update, remove;\r\n\r\n\tif (options.singleton) {\r\n\t\tvar styleIndex = singletonCounter++;\r\n\t\tstyleElement = singletonElement || (singletonElement = createStyleElement(options));\r\n\t\tupdate = applyToSingletonTag.bind(null, styleElement, styleIndex, false);\r\n\t\tremove = applyToSingletonTag.bind(null, styleElement, styleIndex, true);\r\n\t} else if(obj.sourceMap &&\r\n\t\ttypeof URL === \"function\" &&\r\n\t\ttypeof URL.createObjectURL === \"function\" &&\r\n\t\ttypeof URL.revokeObjectURL === \"function\" &&\r\n\t\ttypeof Blob === \"function\" &&\r\n\t\ttypeof btoa === \"function\") {\r\n\t\tstyleElement = createLinkElement(options);\r\n\t\tupdate = updateLink.bind(null, styleElement);\r\n\t\tremove = function() {\r\n\t\t\tremoveStyleElement(styleElement);\r\n\t\t\tif(styleElement.href)\r\n\t\t\t\tURL.revokeObjectURL(styleElement.href);\r\n\t\t};\r\n\t} else {\r\n\t\tstyleElement = createStyleElement(options);\r\n\t\tupdate = applyToTag.bind(null, styleElement);\r\n\t\tremove = function() {\r\n\t\t\tremoveStyleElement(styleElement);\r\n\t\t};\r\n\t}\r\n\r\n\tupdate(obj);\r\n\r\n\treturn function updateStyle(newObj) {\r\n\t\tif(newObj) {\r\n\t\t\tif(newObj.css === obj.css && newObj.media === obj.media && newObj.sourceMap === obj.sourceMap)\r\n\t\t\t\treturn;\r\n\t\t\tupdate(obj = newObj);\r\n\t\t} else {\r\n\t\t\tremove();\r\n\t\t}\r\n\t};\r\n}\r\n\r\nvar replaceText = (function () {\r\n\tvar textStore = [];\r\n\r\n\treturn function (index, replacement) {\r\n\t\ttextStore[index] = replacement;\r\n\t\treturn textStore.filter(Boolean).join('\\n');\r\n\t};\r\n})();\r\n\r\nfunction applyToSingletonTag(styleElement, index, remove, obj) {\r\n\tvar css = remove ? \"\" : obj.css;\r\n\r\n\tif (styleElement.styleSheet) {\r\n\t\tstyleElement.styleSheet.cssText = replaceText(index, css);\r\n\t} else {\r\n\t\tvar cssNode = document.createTextNode(css);\r\n\t\tvar childNodes = styleElement.childNodes;\r\n\t\tif (childNodes[index]) styleElement.removeChild(childNodes[index]);\r\n\t\tif (childNodes.length) {\r\n\t\t\tstyleElement.insertBefore(cssNode, childNodes[index]);\r\n\t\t} else {\r\n\t\t\tstyleElement.appendChild(cssNode);\r\n\t\t}\r\n\t}\r\n}\r\n\r\nfunction applyToTag(styleElement, obj) {\r\n\tvar css = obj.css;\r\n\tvar media = obj.media;\r\n\r\n\tif(media) {\r\n\t\tstyleElement.setAttribute(\"media\", media)\r\n\t}\r\n\r\n\tif(styleElement.styleSheet) {\r\n\t\tstyleElement.styleSheet.cssText = css;\r\n\t} else {\r\n\t\twhile(styleElement.firstChild) {\r\n\t\t\tstyleElement.removeChild(styleElement.firstChild);\r\n\t\t}\r\n\t\tstyleElement.appendChild(document.createTextNode(css));\r\n\t}\r\n}\r\n\r\nfunction updateLink(linkElement, obj) {\r\n\tvar css = obj.css;\r\n\tvar sourceMap = obj.sourceMap;\r\n\r\n\tif(sourceMap) {\r\n\t\t// http://stackoverflow.com/a/26603875\r\n\t\tcss += \"\\n/*# sourceMappingURL=data:application/json;base64,\" + btoa(unescape(encodeURIComponent(JSON.stringify(sourceMap)))) + \" */\";\r\n\t}\r\n\r\n\tvar blob = new Blob([css], { type: \"text/css\" });\r\n\r\n\tvar oldSrc = linkElement.href;\r\n\r\n\tlinkElement.href = URL.createObjectURL(blob);\r\n\r\n\tif(oldSrc)\r\n\t\tURL.revokeObjectURL(oldSrc);\r\n}\r\n\n\n/***/ }),\n/* 67 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module module:engine/model/documentfragment\n */\n\nvar _nodelist = __webpack_require__(69);\n\nvar _nodelist2 = _interopRequireDefault(_nodelist);\n\nvar _element = __webpack_require__(5);\n\nvar _element2 = _interopRequireDefault(_element);\n\nvar _text = __webpack_require__(23);\n\nvar _text2 = _interopRequireDefault(_text);\n\nvar _isiterable = __webpack_require__(41);\n\nvar _isiterable2 = _interopRequireDefault(_isiterable);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * DocumentFragment represents a part of model which does not have a common root but it's top-level nodes\n * can be seen as siblings. In other words, it is a detached part of model tree, without a root.\n */\nvar DocumentFragment = function () {\n\t/**\n  * Creates an empty `DocumentFragment`.\n  *\n  * @param {module:engine/model/node~Node|Iterable.<module:engine/model/node~Node>} [children]\n  * Nodes to be contained inside the `DocumentFragment`.\n  */\n\tfunction DocumentFragment(children) {\n\t\t_classCallCheck(this, DocumentFragment);\n\n\t\t/**\n   * List of nodes contained inside the document fragment.\n   *\n   * @private\n   * @member {module:engine/model/nodelist~NodeList} module:engine/model/documentfragment~DocumentFragment#_children\n   */\n\t\tthis._children = new _nodelist2.default();\n\n\t\tif (children) {\n\t\t\tthis.insertChildren(0, children);\n\t\t}\n\t}\n\n\t/**\n  * Returns an iterator that iterates over all nodes contained inside this document fragment.\n  *\n  * @returns {Iterator.<module:engine/model/node~Node>}\n  */\n\n\n\t_createClass(DocumentFragment, [{\n\t\tkey: Symbol.iterator,\n\t\tvalue: function value() {\n\t\t\treturn this.getChildren();\n\t\t}\n\n\t\t/**\n   * Number of this document fragment's children.\n   *\n   * @readonly\n   * @type {Number}\n   */\n\n\t}, {\n\t\tkey: 'is',\n\n\n\t\t/**\n   * Checks whether given model tree object is of given type.\n   *\n   * Read more in {@link module:engine/model/node~Node#is}.\n   *\n   * @param {String} type\n   * @returns {Boolean}\n   */\n\t\tvalue: function is(type) {\n\t\t\treturn type == 'documentFragment';\n\t\t}\n\n\t\t/**\n   * Gets the child at the given index. Returns `null` if incorrect index was passed.\n   *\n   * @param {Number} index Index of child.\n   * @returns {module:engine/model/node~Node|null} Child node.\n   */\n\n\t}, {\n\t\tkey: 'getChild',\n\t\tvalue: function getChild(index) {\n\t\t\treturn this._children.getNode(index);\n\t\t}\n\n\t\t/**\n   * Returns an iterator that iterates over all of this document fragment's children.\n   *\n   * @returns {Iterable.<module:engine/model/node~Node>}\n   */\n\n\t}, {\n\t\tkey: 'getChildren',\n\t\tvalue: function getChildren() {\n\t\t\treturn this._children[Symbol.iterator]();\n\t\t}\n\n\t\t/**\n   * Returns an index of the given child node. Returns `null` if given node is not a child of this document fragment.\n   *\n   * @param {module:engine/model/node~Node} node Child node to look for.\n   * @returns {Number|null} Child node's index.\n   */\n\n\t}, {\n\t\tkey: 'getChildIndex',\n\t\tvalue: function getChildIndex(node) {\n\t\t\treturn this._children.getNodeIndex(node);\n\t\t}\n\n\t\t/**\n   * Returns the starting offset of given child. Starting offset is equal to the sum of\n   * {module:engine/model/node~Node#offsetSize offset sizes} of all node's siblings that are before it. Returns `null` if\n   * given node is not a child of this document fragment.\n   *\n   * @param {module:engine/model/node~Node} node Child node to look for.\n   * @returns {Number|null} Child node's starting offset.\n   */\n\n\t}, {\n\t\tkey: 'getChildStartOffset',\n\t\tvalue: function getChildStartOffset(node) {\n\t\t\treturn this._children.getNodeStartOffset(node);\n\t\t}\n\n\t\t/**\n   * Returns path to a `DocumentFragment`, which is an empty array. Added for compatibility reasons.\n   *\n   * @returns {Array}\n   */\n\n\t}, {\n\t\tkey: 'getPath',\n\t\tvalue: function getPath() {\n\t\t\treturn [];\n\t\t}\n\n\t\t/**\n   * Converts offset \"position\" to index \"position\".\n   *\n   * Returns index of a node that occupies given offset. If given offset is too low, returns `0`. If given offset is\n   * too high, returns index after last child}.\n   *\n   *\t\tconst textNode = new Text( 'foo' );\n   *\t\tconst pElement = new Element( 'p' );\n   *\t\tconst docFrag = new DocumentFragment( [ textNode, pElement ] );\n   *\t\tdocFrag.offsetToIndex( -1 ); // Returns 0, because offset is too low.\n   *\t\tdocFrag.offsetToIndex( 0 ); // Returns 0, because offset 0 is taken by `textNode` which is at index 0.\n   *\t\tdocFrag.offsetToIndex( 1 ); // Returns 0, because `textNode` has `offsetSize` equal to 3, so it occupies offset 1 too.\n   *\t\tdocFrag.offsetToIndex( 2 ); // Returns 0.\n   *\t\tdocFrag.offsetToIndex( 3 ); // Returns 1.\n   *\t\tdocFrag.offsetToIndex( 4 ); // Returns 2. There are no nodes at offset 4, so last available index is returned.\n   *\n   * @param {Number} offset Offset to look for.\n   * @returns {Number} Index of a node that occupies given offset.\n   */\n\n\t}, {\n\t\tkey: 'offsetToIndex',\n\t\tvalue: function offsetToIndex(offset) {\n\t\t\treturn this._children.offsetToIndex(offset);\n\t\t}\n\n\t\t/**\n   * {@link #insertChildren Inserts} one or more nodes at the end of this document fragment.\n   *\n   * @param {module:engine/model/node~Node|Iterable.<module:engine/model/node~Node>} nodes Nodes to be inserted.\n   */\n\n\t}, {\n\t\tkey: 'appendChildren',\n\t\tvalue: function appendChildren(nodes) {\n\t\t\tthis.insertChildren(this.childCount, nodes);\n\t\t}\n\n\t\t/**\n   * Inserts one or more nodes at the given index and sets {@link module:engine/model/node~Node#parent parent} of these nodes\n   * to this document fragment.\n   *\n   * @param {Number} index Index at which nodes should be inserted.\n   * @param {module:engine/model/node~Node|Iterable.<module:engine/model/node~Node>} nodes Nodes to be inserted.\n   */\n\n\t}, {\n\t\tkey: 'insertChildren',\n\t\tvalue: function insertChildren(index, nodes) {\n\t\t\tnodes = normalize(nodes);\n\n\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\tvar _didIteratorError = false;\n\t\t\tvar _iteratorError = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator = nodes[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\tvar node = _step.value;\n\n\t\t\t\t\tnode.parent = this;\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError = true;\n\t\t\t\t_iteratorError = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tthis._children.insertNodes(index, nodes);\n\t\t}\n\n\t\t/**\n   * Removes one or more nodes starting at the given index\n   * and sets {@link module:engine/model/node~Node#parent parent} of these nodes to `null`.\n   *\n   * @param {Number} index Index of the first node to remove.\n   * @param {Number} [howMany=1] Number of nodes to remove.\n   * @returns {Array.<module:engine/model/node~Node>} Array containing removed nodes.\n   */\n\n\t}, {\n\t\tkey: 'removeChildren',\n\t\tvalue: function removeChildren(index) {\n\t\t\tvar howMany = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 1;\n\n\t\t\tvar nodes = this._children.removeNodes(index, howMany);\n\n\t\t\tvar _iteratorNormalCompletion2 = true;\n\t\t\tvar _didIteratorError2 = false;\n\t\t\tvar _iteratorError2 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator2 = nodes[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {\n\t\t\t\t\tvar node = _step2.value;\n\n\t\t\t\t\tnode.parent = null;\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError2 = true;\n\t\t\t\t_iteratorError2 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion2 && _iterator2.return) {\n\t\t\t\t\t\t_iterator2.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError2) {\n\t\t\t\t\t\tthrow _iteratorError2;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn nodes;\n\t\t}\n\n\t\t/**\n   * Converts `DocumentFragment` instance to plain object and returns it.\n   * Takes care of converting all of this document fragment's children.\n   *\n   * @returns {Object} `DocumentFragment` instance converted to plain object.\n   */\n\n\t}, {\n\t\tkey: 'toJSON',\n\t\tvalue: function toJSON() {\n\t\t\tvar json = [];\n\n\t\t\tvar _iteratorNormalCompletion3 = true;\n\t\t\tvar _didIteratorError3 = false;\n\t\t\tvar _iteratorError3 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator3 = this._children[Symbol.iterator](), _step3; !(_iteratorNormalCompletion3 = (_step3 = _iterator3.next()).done); _iteratorNormalCompletion3 = true) {\n\t\t\t\t\tvar node = _step3.value;\n\n\t\t\t\t\tjson.push(node.toJSON());\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError3 = true;\n\t\t\t\t_iteratorError3 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion3 && _iterator3.return) {\n\t\t\t\t\t\t_iterator3.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError3) {\n\t\t\t\t\t\tthrow _iteratorError3;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn json;\n\t\t}\n\n\t\t/**\n   * Creates a `DocumentFragment` instance from given plain object (i.e. parsed JSON string).\n   * Converts `DocumentFragment` children to proper nodes.\n   *\n   * @param {Object} json Plain object to be converted to `DocumentFragment`.\n   * @returns {module:engine/model/documentfragment~DocumentFragment} `DocumentFragment` instance created using given plain object.\n   */\n\n\t}, {\n\t\tkey: 'childCount',\n\t\tget: function get() {\n\t\t\treturn this._children.length;\n\t\t}\n\n\t\t/**\n   * Sum of {module:engine/model/node~Node#offsetSize offset sizes} of all of this document fragment's children.\n   *\n   * @readonly\n   * @type {Number}\n   */\n\n\t}, {\n\t\tkey: 'maxOffset',\n\t\tget: function get() {\n\t\t\treturn this._children.maxOffset;\n\t\t}\n\n\t\t/**\n   * Is `true` if there are no nodes inside this document fragment, `false` otherwise.\n   *\n   * @readonly\n   * @type {Boolean}\n   */\n\n\t}, {\n\t\tkey: 'isEmpty',\n\t\tget: function get() {\n\t\t\treturn this.childCount === 0;\n\t\t}\n\n\t\t/**\n   * Artificial root of `DocumentFragment`. Returns itself. Added for compatibility reasons.\n   *\n   * @readonly\n   * @type {module:engine/model/documentfragment~DocumentFragment}\n   */\n\n\t}, {\n\t\tkey: 'root',\n\t\tget: function get() {\n\t\t\treturn this;\n\t\t}\n\n\t\t/**\n   * Artificial parent of `DocumentFragment`. Returns `null`. Added for compatibility reasons.\n   *\n   * @readonly\n   * @type {null}\n   */\n\n\t}, {\n\t\tkey: 'parent',\n\t\tget: function get() {\n\t\t\treturn null;\n\t\t}\n\t}], [{\n\t\tkey: 'fromJSON',\n\t\tvalue: function fromJSON(json) {\n\t\t\tvar children = [];\n\n\t\t\tvar _iteratorNormalCompletion4 = true;\n\t\t\tvar _didIteratorError4 = false;\n\t\t\tvar _iteratorError4 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator4 = json[Symbol.iterator](), _step4; !(_iteratorNormalCompletion4 = (_step4 = _iterator4.next()).done); _iteratorNormalCompletion4 = true) {\n\t\t\t\t\tvar child = _step4.value;\n\n\t\t\t\t\tif (child.name) {\n\t\t\t\t\t\t// If child has name property, it is an Element.\n\t\t\t\t\t\tchildren.push(_element2.default.fromJSON(child));\n\t\t\t\t\t} else {\n\t\t\t\t\t\t// Otherwise, it is a Text node.\n\t\t\t\t\t\tchildren.push(_text2.default.fromJSON(child));\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError4 = true;\n\t\t\t\t_iteratorError4 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion4 && _iterator4.return) {\n\t\t\t\t\t\t_iterator4.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError4) {\n\t\t\t\t\t\tthrow _iteratorError4;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn new DocumentFragment(children);\n\t\t}\n\t}]);\n\n\treturn DocumentFragment;\n}();\n\n// Converts strings to Text and non-iterables to arrays.\n//\n// @param {String|module:engine/model/node~Node|Iterable.<String|module:engine/model/node~Node>}\n// @return {Iterable.<module:engine/model/node~Node>}\n\n\nexports.default = DocumentFragment;\nfunction normalize(nodes) {\n\t// Separate condition because string is iterable.\n\tif (typeof nodes == 'string') {\n\t\treturn [new _text2.default(nodes)];\n\t}\n\n\tif (!(0, _isiterable2.default)(nodes)) {\n\t\tnodes = [nodes];\n\t}\n\n\t// Array.from to enable .map() on non-arrays.\n\treturn Array.from(nodes).map(function (node) {\n\t\treturn typeof node == 'string' ? new _text2.default(node) : node;\n\t});\n}\n\n/***/ }),\n/* 68 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module engine/model/node\n */\n\nvar _tomap = __webpack_require__(152);\n\nvar _tomap2 = _interopRequireDefault(_tomap);\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _toConsumableArray(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } else { return Array.from(arr); } }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * Model node. Most basic structure of model tree.\n *\n * This is an abstract class that is a base for other classes representing different nodes in model.\n *\n * **Note:** If a node is detached from the model tree, you can manipulate it using it's API.\n * However, it is **very important** that nodes already attached to model tree should be only changed through\n * {@link module:engine/model/document~Document#batch Batch API}.\n *\n * Changes done by `Node` methods, like {@link module:engine/model/element~Element#insertChildren insertChildren} or\n * {@link module:engine/model/node~Node#setAttribute setAttribute}\n * do not generate {@link module:engine/model/operation/operation~Operation operations}\n * which are essential for correct editor work if you modify nodes in {@link module:engine/model/document~Document document} root.\n *\n * The flow of working on `Node` (and classes that inherits from it) is as such:\n * 1. You can create a `Node` instance, modify it using it's API.\n * 2. Add `Node` to the model using `Batch` API.\n * 3. Change `Node` that was already added to the model using `Batch` API.\n *\n * Similarly, you cannot use `Batch` API on a node that has not been added to the model tree, with the exception\n * of {@link module:engine/model/batch~Batch#insert inserting} that node to the model tree.\n *\n * Be aware that using {@link module:engine/model/batch~Batch#remove remove from Batch API} does not allow to use `Node` API because\n * the information about `Node` is still kept in model document.\n *\n * In case of {@link module:engine/model/element~Element element node}, adding and removing children also counts as changing a node and\n * follows same rules.\n */\nvar Node = function () {\n\t/**\n  * Creates a model node.\n  *\n  * This is an abstract class, so this constructor should not be used directly.\n  *\n  * @abstract\n  * @param {Object} [attrs] Node's attributes. See {@link module:utils/tomap~toMap} for a list of accepted values.\n  */\n\tfunction Node(attrs) {\n\t\t_classCallCheck(this, Node);\n\n\t\t/**\n   * Parent of this node. It could be {@link module:engine/model/element~Element}\n   * or {@link module:engine/model/documentfragment~DocumentFragment}.\n   * Equals to `null` if the node has no parent.\n   *\n   * @readonly\n   * @member {module:engine/model/element~Element|module:engine/model/documentfragment~DocumentFragment|null}\n   */\n\t\tthis.parent = null;\n\n\t\t/**\n   * Attributes set on this node.\n   *\n   * @private\n   * @member {Map} module:engine/model/node~Node#_attrs\n   */\n\t\tthis._attrs = (0, _tomap2.default)(attrs);\n\t}\n\n\t/**\n  * Index of this node in it's parent or `null` if the node has no parent.\n  *\n  * Accessing this property throws an error if this node's parent element does not contain it.\n  * This means that model tree got broken.\n  *\n  * @readonly\n  * @type {Number|null}\n  */\n\n\n\t_createClass(Node, [{\n\t\tkey: 'clone',\n\n\n\t\t/**\n   * Creates a copy of this node, that is a node with exactly same attributes, and returns it.\n   *\n   * @returns {module:engine/model/node~Node} Node with same attributes as this node.\n   */\n\t\tvalue: function clone() {\n\t\t\treturn new Node(this._attrs);\n\t\t}\n\n\t\t/**\n   * Gets path to the node. The path is an array containing starting offsets of consecutive ancestors of this node,\n   * beginning from {@link module:engine/model/node~Node#root root}, down to this node's starting offset. The path can be used to\n   * create {@link module:engine/model/position~Position Position} instance.\n   *\n   *\t\tconst abc = new Text( 'abc' );\n   *\t\tconst foo = new Text( 'foo' );\n   *\t\tconst h1 = new Element( 'h1', null, new Text( 'header' ) );\n   *\t\tconst p = new Element( 'p', null, [ abc, foo ] );\n   *\t\tconst div = new Element( 'div', null, [ h1, p ] );\n   *\t\tfoo.getPath(); // Returns [ 1, 3 ]. `foo` is in `p` which is in `div`. `p` starts at offset 1, while `foo` at 3.\n   *\t\th1.getPath(); // Returns [ 0 ].\n   *\t\tdiv.getPath(); // Returns [].\n   *\n   * @returns {Array.<Number>} The path.\n   */\n\n\t}, {\n\t\tkey: 'getPath',\n\t\tvalue: function getPath() {\n\t\t\tvar path = [];\n\t\t\tvar node = this;\n\n\t\t\twhile (node.parent) {\n\t\t\t\tpath.unshift(node.startOffset);\n\t\t\t\tnode = node.parent;\n\t\t\t}\n\n\t\t\treturn path;\n\t\t}\n\n\t\t/**\n   * Returns ancestors array of this node.\n   *\n   * @param {Object} options Options object.\n   * @param {Boolean} [options.includeNode=false] When set to `true` this node will be also included in parent's array.\n   * @param {Boolean} [options.parentFirst=false] When set to `true`, array will be sorted from node's parent to root element,\n   * otherwise root element will be the first item in the array.\n   * @returns {Array} Array with ancestors.\n   */\n\n\t}, {\n\t\tkey: 'getAncestors',\n\t\tvalue: function getAncestors() {\n\t\t\tvar options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : { includeNode: false, parentFirst: false };\n\n\t\t\tvar ancestors = [];\n\t\t\tvar parent = options.includeNode ? this : this.parent;\n\n\t\t\twhile (parent) {\n\t\t\t\tancestors[options.parentFirst ? 'push' : 'unshift'](parent);\n\t\t\t\tparent = parent.parent;\n\t\t\t}\n\n\t\t\treturn ancestors;\n\t\t}\n\n\t\t/**\n   * Removes this node from it's parent.\n   */\n\n\t}, {\n\t\tkey: 'remove',\n\t\tvalue: function remove() {\n\t\t\tthis.parent.removeChildren(this.index);\n\t\t}\n\n\t\t/**\n   * Checks if the node has an attribute with given key.\n   *\n   * @param {String} key Key of attribute to check.\n   * @returns {Boolean} `true` if attribute with given key is set on node, `false` otherwise.\n   */\n\n\t}, {\n\t\tkey: 'hasAttribute',\n\t\tvalue: function hasAttribute(key) {\n\t\t\treturn this._attrs.has(key);\n\t\t}\n\n\t\t/**\n   * Gets an attribute value for given key or `undefined` if that attribute is not set on node.\n   *\n   * @param {String} key Key of attribute to look for.\n   * @returns {*} Attribute value or `undefined`.\n   */\n\n\t}, {\n\t\tkey: 'getAttribute',\n\t\tvalue: function getAttribute(key) {\n\t\t\treturn this._attrs.get(key);\n\t\t}\n\n\t\t/**\n   * Returns iterator that iterates over this node's attributes.\n   *\n   * Attributes are returned as arrays containing two items. First one is attribute key and second is attribute value.\n   * This format is accepted by native `Map` object and also can be passed in `Node` constructor.\n   *\n   * @returns {Iterable.<*>}\n   */\n\n\t}, {\n\t\tkey: 'getAttributes',\n\t\tvalue: function getAttributes() {\n\t\t\treturn this._attrs.entries();\n\t\t}\n\n\t\t/**\n   * Returns iterator that iterates over this node's attribute keys.\n   *\n   * @returns {Iterator.<String>}\n   */\n\n\t}, {\n\t\tkey: 'getAttributeKeys',\n\t\tvalue: function getAttributeKeys() {\n\t\t\treturn this._attrs.keys();\n\t\t}\n\n\t\t/**\n   * Sets attribute on the node. If attribute with the same key already is set, it's value is overwritten.\n   *\n   * @param {String} key Key of attribute to set.\n   * @param {*} value Attribute value.\n   */\n\n\t}, {\n\t\tkey: 'setAttribute',\n\t\tvalue: function setAttribute(key, value) {\n\t\t\tthis._attrs.set(key, value);\n\t\t}\n\n\t\t/**\n   * Removes all attributes from the node and sets given attributes.\n   *\n   * @param {Object} [attrs] Attributes to set. See {@link module:utils/tomap~toMap} for a list of accepted values.\n   */\n\n\t}, {\n\t\tkey: 'setAttributesTo',\n\t\tvalue: function setAttributesTo(attrs) {\n\t\t\tthis._attrs = (0, _tomap2.default)(attrs);\n\t\t}\n\n\t\t/**\n   * Removes an attribute with given key from the node.\n   *\n   * @param {String} key Key of attribute to remove.\n   * @returns {Boolean} `true` if the attribute was set on the element, `false` otherwise.\n   */\n\n\t}, {\n\t\tkey: 'removeAttribute',\n\t\tvalue: function removeAttribute(key) {\n\t\t\treturn this._attrs.delete(key);\n\t\t}\n\n\t\t/**\n   * Removes all attributes from the node.\n   */\n\n\t}, {\n\t\tkey: 'clearAttributes',\n\t\tvalue: function clearAttributes() {\n\t\t\tthis._attrs.clear();\n\t\t}\n\n\t\t/**\n   * Converts `Node` to plain object and returns it.\n   *\n   * @returns {Object} `Node` converted to plain object.\n   */\n\n\t}, {\n\t\tkey: 'toJSON',\n\t\tvalue: function toJSON() {\n\t\t\tvar json = {};\n\n\t\t\tif (this._attrs.size) {\n\t\t\t\tjson.attributes = [].concat(_toConsumableArray(this._attrs));\n\t\t\t}\n\n\t\t\treturn json;\n\t\t}\n\n\t\t/**\n   * Checks whether given model tree object is of given type.\n   *\n   * This method is useful when processing model tree objects that are of unknown type. For example, a function\n   * may return {@link module:engine/model/documentfragment~DocumentFragment} or {@link module:engine/model/node~Node}\n   * that can be either text node or element. This method can be used to check what kind of object is returned.\n   *\n   *\t\tobj.is( 'node' ); // true for any node, false for document fragment\n   *\t\tobj.is( 'documentFragment' ); // true for document fragment, false for any node\n   *\t\tobj.is( 'element' ); // true for any element, false for text node or document fragment\n   *\t\tobj.is( 'element', 'paragraph' ); // true only for element which name is 'paragraph'\n   *\t\tobj.is( 'paragraph' ); // shortcut for obj.is( 'element', 'paragraph' )\n   *\t\tobj.is( 'text' ); // true for text node, false for element and document fragment\n   *\t\tobj.is( 'textProxy' ); // true for text proxy object\n   *\n   * @method #is\n   * @param {'element'|'rootElement'|'text'|'textProxy'|'documentFragment'} type\n   * @returns {Boolean}\n   */\n\n\t}, {\n\t\tkey: 'index',\n\t\tget: function get() {\n\t\t\tvar pos = void 0;\n\n\t\t\tif (!this.parent) {\n\t\t\t\treturn null;\n\t\t\t}\n\n\t\t\tif ((pos = this.parent.getChildIndex(this)) === null) {\n\t\t\t\t/**\n     * The node's parent does not contain this node.\n     *\n     * @error node-not-found-in-parent\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('model-node-not-found-in-parent: The node\\'s parent does not contain this node.');\n\t\t\t}\n\n\t\t\treturn pos;\n\t\t}\n\n\t\t/**\n   * Offset at which this node starts in it's parent. It is equal to the sum of {@link #offsetSize offsetSize}\n   * of all it's previous siblings. Equals to `null` if node has no parent.\n   *\n   * Accessing this property throws an error if this node's parent element does not contain it.\n   * This means that model tree got broken.\n   *\n   * @readonly\n   * @type {Number|Null}\n   */\n\n\t}, {\n\t\tkey: 'startOffset',\n\t\tget: function get() {\n\t\t\tvar pos = void 0;\n\n\t\t\tif (!this.parent) {\n\t\t\t\treturn null;\n\t\t\t}\n\n\t\t\tif ((pos = this.parent.getChildStartOffset(this)) === null) {\n\t\t\t\t/**\n     * The node's parent does not contain this node.\n     *\n     * @error node-not-found-in-parent\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('model-node-not-found-in-parent: The node\\'s parent does not contain this node.');\n\t\t\t}\n\n\t\t\treturn pos;\n\t\t}\n\n\t\t/**\n   * Offset size of this node. Represents how much \"offset space\" is occupied by the node in it's parent.\n   * It is important for {@link module:engine/model/position~Position position}. When node has `offsetSize` greater than `1`, position\n   * can be placed between that node start and end. `offsetSize` greater than `1` is for nodes that represents more\n   * than one entity, i.e. {@link module:engine/model/text~Text text node}.\n   *\n   * @readonly\n   * @type {Number}\n   */\n\n\t}, {\n\t\tkey: 'offsetSize',\n\t\tget: function get() {\n\t\t\treturn 1;\n\t\t}\n\n\t\t/**\n   * Offset at which this node ends in it's parent. It is equal to the sum of this node's\n   * {@link module:engine/model/node~Node#startOffset start offset} and {@link #offsetSize offset size}.\n   * Equals to `null` if the node has no parent.\n   *\n   * @readonly\n   * @type {Number|null}\n   */\n\n\t}, {\n\t\tkey: 'endOffset',\n\t\tget: function get() {\n\t\t\tif (!this.parent) {\n\t\t\t\treturn null;\n\t\t\t}\n\n\t\t\treturn this.startOffset + this.offsetSize;\n\t\t}\n\n\t\t/**\n   * Node's next sibling or `null` if the node is a last child of it's parent or if the node has no parent.\n   *\n   * @readonly\n   * @type {module:engine/model/node~Node|null}\n   */\n\n\t}, {\n\t\tkey: 'nextSibling',\n\t\tget: function get() {\n\t\t\tvar index = this.index;\n\n\t\t\treturn index !== null && this.parent.getChild(index + 1) || null;\n\t\t}\n\n\t\t/**\n   * Node's previous sibling or `null` if the node is a first child of it's parent or if the node has no parent.\n   *\n   * @readonly\n   * @type {module:engine/model/node~Node|null}\n   */\n\n\t}, {\n\t\tkey: 'previousSibling',\n\t\tget: function get() {\n\t\t\tvar index = this.index;\n\n\t\t\treturn index !== null && this.parent.getChild(index - 1) || null;\n\t\t}\n\n\t\t/**\n   * The top-most ancestor of the node. If node has no parent it is the root itself. If the node is a part\n   * of {@link module:engine/model/documentfragment~DocumentFragment}, it's `root` is equal to that `DocumentFragment`.\n   *\n   * @readonly\n   * @type {module:engine/model/node~Node|module:engine/model/documentfragment~DocumentFragment}\n   */\n\n\t}, {\n\t\tkey: 'root',\n\t\tget: function get() {\n\t\t\tvar root = this;\n\n\t\t\twhile (root.parent) {\n\t\t\t\troot = root.parent;\n\t\t\t}\n\n\t\t\treturn root;\n\t\t}\n\n\t\t/**\n   * {@link module:engine/model/document~Document Document} that owns this node or `null` if the node has no parent or is inside\n   * a {@link module:engine/model/documentfragment~DocumentFragment DocumentFragment}.\n   *\n   * @readonly\n   * @type {module:engine/model/document~Document|null}\n   */\n\n\t}, {\n\t\tkey: 'document',\n\t\tget: function get() {\n\t\t\t// This is a top element of a sub-tree.\n\t\t\tif (this.root == this) {\n\t\t\t\treturn null;\n\t\t\t}\n\n\t\t\t// Root may be `DocumentFragment` which does not have document property.\n\t\t\treturn this.root.document || null;\n\t\t}\n\t}]);\n\n\treturn Node;\n}();\n\nexports.default = Node;\n\n/***/ }),\n/* 69 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module engine/model/nodelist\n */\n\nvar _node = __webpack_require__(68);\n\nvar _node2 = _interopRequireDefault(_node);\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _toConsumableArray(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } else { return Array.from(arr); } }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * Provides an interface to operate on a list of {@link module:engine/model/node~Node nodes}. `NodeList` is used internally\n * in classes like {@link module:engine/model/element~Element Element}\n * or {@link module:engine/model/documentfragment~DocumentFragment DocumentFragment}.\n */\nvar NodeList = function () {\n\t/**\n  * Creates an empty node list.\n  *\n  * @param {Iterable.<module:engine/model/node~Node>} nodes Nodes contained in this node list.\n  */\n\tfunction NodeList(nodes) {\n\t\t_classCallCheck(this, NodeList);\n\n\t\t/**\n   * Nodes contained in this node list.\n   *\n   * @private\n   * @member {Array.<module:engine/model/node~Node>}\n   */\n\t\tthis._nodes = [];\n\n\t\tif (nodes) {\n\t\t\tthis.insertNodes(0, nodes);\n\t\t}\n\t}\n\n\t/**\n  * Returns an iterator that iterates over all nodes contained inside this node list.\n  *\n  * @returns {Iterator.<module:engine/model/node~Node>}\n  */\n\n\n\t_createClass(NodeList, [{\n\t\tkey: Symbol.iterator,\n\t\tvalue: function value() {\n\t\t\treturn this._nodes[Symbol.iterator]();\n\t\t}\n\n\t\t/**\n   * Number of nodes contained inside this node list.\n   *\n   * @readonly\n   * @type {Number}\n   */\n\n\t}, {\n\t\tkey: 'getNode',\n\n\n\t\t/**\n   * Gets the node at the given index. Returns `null` if incorrect index was passed.\n   *\n   * @param {Number} index Index of node.\n   * @returns {module:engine/model/node~Node|null} Node at given index.\n   */\n\t\tvalue: function getNode(index) {\n\t\t\treturn this._nodes[index] || null;\n\t\t}\n\n\t\t/**\n   * Returns an index of the given node. Returns `null` if given node is not inside this node list.\n   *\n   * @param {module:engine/model/node~Node} node Child node to look for.\n   * @returns {Number|null} Child node's index.\n   */\n\n\t}, {\n\t\tkey: 'getNodeIndex',\n\t\tvalue: function getNodeIndex(node) {\n\t\t\tvar index = this._nodes.indexOf(node);\n\n\t\t\treturn index == -1 ? null : index;\n\t\t}\n\n\t\t/**\n   * Returns the starting offset of given node. Starting offset is equal to the sum of\n   * {module:engine/model/node~Node#offsetSize offset sizes} of all nodes that are before this node in this node list.\n   *\n   * @param {module:engine/model/node~Node} node Node to look for.\n   * @returns {Number|null} Node's starting offset.\n   */\n\n\t}, {\n\t\tkey: 'getNodeStartOffset',\n\t\tvalue: function getNodeStartOffset(node) {\n\t\t\tvar index = this.getNodeIndex(node);\n\n\t\t\treturn index === null ? null : this._nodes.slice(0, index).reduce(function (sum, node) {\n\t\t\t\treturn sum + node.offsetSize;\n\t\t\t}, 0);\n\t\t}\n\n\t\t/**\n   * Converts index to offset in node list.\n   *\n   * Returns starting offset of a node that is at given index. Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError}\n   * `model-nodelist-index-out-of-bounds` if given index is less than `0` or more than {@link #length}.\n   *\n   * @param {Number} index Node's index.\n   * @returns {Number} Node's starting offset.\n   */\n\n\t}, {\n\t\tkey: 'indexToOffset',\n\t\tvalue: function indexToOffset(index) {\n\t\t\tif (index == this._nodes.length) {\n\t\t\t\treturn this.maxOffset;\n\t\t\t}\n\n\t\t\tvar node = this._nodes[index];\n\n\t\t\tif (!node) {\n\t\t\t\t/**\n     * Given index cannot be found in the node list.\n     *\n     * @error nodelist-index-out-of-bounds\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('model-nodelist-index-out-of-bounds: Given index cannot be found in the node list.');\n\t\t\t}\n\n\t\t\treturn this.getNodeStartOffset(node);\n\t\t}\n\n\t\t/**\n   * Converts offset in node list to index.\n   *\n   * Returns index of a node that occupies given offset. Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError}\n   * `model-nodelist-offset-out-of-bounds` if given offset is less than `0` or more than {@link #maxOffset}.\n   *\n   * @param {Number} offset Offset to look for.\n   * @returns {Number} Index of a node that occupies given offset.\n   */\n\n\t}, {\n\t\tkey: 'offsetToIndex',\n\t\tvalue: function offsetToIndex(offset) {\n\t\t\tvar totalOffset = 0;\n\n\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\tvar _didIteratorError = false;\n\t\t\tvar _iteratorError = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator = this._nodes[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\tvar node = _step.value;\n\n\t\t\t\t\tif (offset >= totalOffset && offset < totalOffset + node.offsetSize) {\n\t\t\t\t\t\treturn this.getNodeIndex(node);\n\t\t\t\t\t}\n\n\t\t\t\t\ttotalOffset += node.offsetSize;\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError = true;\n\t\t\t\t_iteratorError = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tif (totalOffset != offset) {\n\t\t\t\t/**\n     * Given offset cannot be found in the node list.\n     *\n     * @error nodelist-offset-out-of-bounds\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('model-nodelist-offset-out-of-bounds: Given offset cannot be found in the node list.');\n\t\t\t}\n\n\t\t\treturn this.length;\n\t\t}\n\n\t\t/**\n   * Inserts given nodes at given index.\n   *\n   * @param {Number} index Index at which nodes should be inserted.\n   * @param {Iterable.<module:engine/model/node~Node>} nodes Nodes to be inserted.\n   */\n\n\t}, {\n\t\tkey: 'insertNodes',\n\t\tvalue: function insertNodes(index, nodes) {\n\t\t\tvar _nodes;\n\n\t\t\t// Validation.\n\t\t\tvar _iteratorNormalCompletion2 = true;\n\t\t\tvar _didIteratorError2 = false;\n\t\t\tvar _iteratorError2 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator2 = nodes[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {\n\t\t\t\t\tvar node = _step2.value;\n\n\t\t\t\t\tif (!(node instanceof _node2.default)) {\n\t\t\t\t\t\t/**\n       * Trying to insert an object which is not a Node instance.\n       *\n       * @error nodelist-insertNodes-not-node\n       */\n\t\t\t\t\t\tthrow new _ckeditorerror2.default('model-nodelist-insertNodes-not-node: Trying to insert an object which is not a Node instance.');\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError2 = true;\n\t\t\t\t_iteratorError2 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion2 && _iterator2.return) {\n\t\t\t\t\t\t_iterator2.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError2) {\n\t\t\t\t\t\tthrow _iteratorError2;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t(_nodes = this._nodes).splice.apply(_nodes, [index, 0].concat(_toConsumableArray(nodes)));\n\t\t}\n\n\t\t/**\n   * Removes one or more nodes starting at the given index.\n   *\n   * @param {Number} indexStart Index of the first node to remove.\n   * @param {Number} [howMany=1] Number of nodes to remove.\n   * @returns {Array.<module:engine/model/node~Node>} Array containing removed nodes.\n   */\n\n\t}, {\n\t\tkey: 'removeNodes',\n\t\tvalue: function removeNodes(indexStart) {\n\t\t\tvar howMany = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 1;\n\n\t\t\treturn this._nodes.splice(indexStart, howMany);\n\t\t}\n\n\t\t/**\n   * Converts `NodeList` instance to an array containing nodes that were inserted in the node list. Nodes\n   * are also converted to their plain object representation.\n   *\n   * @returns {Array.<module:engine/model/node~Node>} `NodeList` instance converted to `Array`.\n   */\n\n\t}, {\n\t\tkey: 'toJSON',\n\t\tvalue: function toJSON() {\n\t\t\treturn this._nodes.map(function (node) {\n\t\t\t\treturn node.toJSON();\n\t\t\t});\n\t\t}\n\t}, {\n\t\tkey: 'length',\n\t\tget: function get() {\n\t\t\treturn this._nodes.length;\n\t\t}\n\n\t\t/**\n   * Sum of {@link module:engine/model/node~Node#offsetSize offset sizes} of all nodes contained inside this node list.\n   *\n   * @readonly\n   * @type {Number}\n   */\n\n\t}, {\n\t\tkey: 'maxOffset',\n\t\tget: function get() {\n\t\t\treturn this._nodes.reduce(function (sum, node) {\n\t\t\t\treturn sum + node.offsetSize;\n\t\t\t}, 0);\n\t\t}\n\t}]);\n\n\treturn NodeList;\n}();\n\nexports.default = NodeList;\n\n/***/ }),\n/* 70 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _operation = __webpack_require__(32);\n\nvar _operation2 = _interopRequireDefault(_operation);\n\nvar _range = __webpack_require__(3);\n\nvar _range2 = _interopRequireDefault(_range);\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nvar _writer = __webpack_require__(28);\n\nvar _writer2 = _interopRequireDefault(_writer);\n\nvar _isEqual = __webpack_require__(488);\n\nvar _isEqual2 = _interopRequireDefault(_isEqual);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module engine/model/operation/attributeoperation\n */\n\n/**\n * Operation to change nodes' attribute.\n *\n * Using this class you can add, remove or change value of the attribute.\n *\n * @extends module:engine/model/operation/operation~Operation\n */\nvar AttributeOperation = function (_Operation) {\n\t_inherits(AttributeOperation, _Operation);\n\n\t/**\n  * Creates an operation that changes, removes or adds attributes.\n  *\n  * If only `newValue` is set, attribute will be added on a node. Note that all nodes in operation's range must not\n  * have an attribute with the same key as the added attribute.\n  *\n  * If only `oldValue` is set, then attribute with given key will be removed. Note that all nodes in operation's range\n  * must have an attribute with that key added.\n  *\n  * If both `newValue` and `oldValue` are set, then the operation will change the attribute value. Note that all nodes in\n  * operation's ranges must already have an attribute with given key and `oldValue` as value\n  *\n  * @param {module:engine/model/range~Range} range Range on which the operation should be applied.\n  * @param {String} key Key of an attribute to change or remove.\n  * @param {*} oldValue Old value of the attribute with given key or `null`, if attribute was not set before.\n  * @param {*} newValue New value of the attribute with given key or `null`, if operation should remove attribute.\n  * @param {Number} baseVersion {@link module:engine/model/document~Document#version} on which the operation can be applied.\n  */\n\tfunction AttributeOperation(range, key, oldValue, newValue, baseVersion) {\n\t\t_classCallCheck(this, AttributeOperation);\n\n\t\t/**\n   * Range on which operation should be applied.\n   *\n   * @readonly\n   * @member {module:engine/model/range~Range}\n   */\n\t\tvar _this = _possibleConstructorReturn(this, (AttributeOperation.__proto__ || Object.getPrototypeOf(AttributeOperation)).call(this, baseVersion));\n\n\t\t_this.range = _range2.default.createFromRange(range);\n\n\t\t/**\n   * Key of an attribute to change or remove.\n   *\n   * @readonly\n   * @member {String}\n   */\n\t\t_this.key = key;\n\n\t\t/**\n   * Old value of the attribute with given key or `null`, if attribute was not set before.\n   *\n   * @readonly\n   * @member {*}\n   */\n\t\t_this.oldValue = oldValue === undefined ? null : oldValue;\n\n\t\t/**\n   * New value of the attribute with given key or `null`, if operation should remove attribute.\n   *\n   * @readonly\n   * @member {*}\n   */\n\t\t_this.newValue = newValue === undefined ? null : newValue;\n\t\treturn _this;\n\t}\n\n\t/**\n  * @inheritDoc\n  */\n\n\n\t_createClass(AttributeOperation, [{\n\t\tkey: 'clone',\n\n\n\t\t/**\n   * @inheritDoc\n   * @returns {module:engine/model/operation/attributeoperation~AttributeOperation}\n   */\n\t\tvalue: function clone() {\n\t\t\treturn new AttributeOperation(this.range, this.key, this.oldValue, this.newValue, this.baseVersion);\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   * @returns {module:engine/model/operation/attributeoperation~AttributeOperation}\n   */\n\n\t}, {\n\t\tkey: 'getReversed',\n\t\tvalue: function getReversed() {\n\t\t\treturn new AttributeOperation(this.range, this.key, this.newValue, this.oldValue, this.baseVersion + 1);\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: '_execute',\n\t\tvalue: function _execute() {\n\t\t\t// Validation.\n\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\tvar _didIteratorError = false;\n\t\t\tvar _iteratorError = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator = this.range.getItems()[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\tvar item = _step.value;\n\n\t\t\t\t\tif (this.oldValue !== null && !(0, _isEqual2.default)(item.getAttribute(this.key), this.oldValue)) {\n\t\t\t\t\t\t/**\n       * Changed node has different attribute value than operation's old attribute value.\n       *\n       * @error operation-attribute-wrong-old-value\n       * @param {module:engine/model/item~Item} item\n       * @param {String} key\n       * @param {*} value\n       */\n\t\t\t\t\t\tthrow new _ckeditorerror2.default('attribute-operation-wrong-old-value: Changed node has different attribute value than operation\\'s old attribute value.', { item: item, key: this.key, value: this.oldValue });\n\t\t\t\t\t}\n\n\t\t\t\t\tif (this.oldValue === null && this.newValue !== null && item.hasAttribute(this.key)) {\n\t\t\t\t\t\t/**\n       * The attribute with given key already exists for the given node.\n       *\n       * @error attribute-operation-attribute-exists\n       * @param {module:engine/model/node~Node} node\n       * @param {String} key\n       */\n\t\t\t\t\t\tthrow new _ckeditorerror2.default('attribute-operation-attribute-exists: The attribute with given key already exists.', { node: item, key: this.key });\n\t\t\t\t\t}\n\n\t\t\t\t\t// If value to set is same as old value, don't do anything.\n\t\t\t\t\t// By returning `undefined`, this operation will be seen as `NoOperation` - that means\n\t\t\t\t\t// that it won't generate any events, etc. `AttributeOperation` with such parameters may be\n\t\t\t\t\t// a result of operational transformation.\n\t\t\t\t\tif ((0, _isEqual2.default)(this.oldValue, this.newValue)) {\n\t\t\t\t\t\treturn;\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\t// Execution.\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError = true;\n\t\t\t\t_iteratorError = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t_writer2.default.setAttribute(this.range, this.key, this.newValue);\n\n\t\t\treturn { range: this.range, key: this.key, oldValue: this.oldValue, newValue: this.newValue };\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: 'type',\n\t\tget: function get() {\n\t\t\tif (this.oldValue === null) {\n\t\t\t\treturn 'addAttribute';\n\t\t\t} else if (this.newValue === null) {\n\t\t\t\treturn 'removeAttribute';\n\t\t\t} else {\n\t\t\t\treturn 'changeAttribute';\n\t\t\t}\n\t\t}\n\t}], [{\n\t\tkey: 'fromJSON',\n\n\n\t\t/**\n   * Creates `AttributeOperation` object from deserilized object, i.e. from parsed JSON string.\n   *\n   * @param {Object} json Deserialized JSON object.\n   * @param {module:engine/model/document~Document} document Document on which this operation will be applied.\n   * @returns {module:engine/model/operation/attributeoperation~AttributeOperation}\n   */\n\t\tvalue: function fromJSON(json, document) {\n\t\t\treturn new AttributeOperation(_range2.default.fromJSON(json.range, document), json.key, json.oldValue, json.newValue, json.baseVersion);\n\t\t}\n\t}, {\n\t\tkey: 'className',\n\t\tget: function get() {\n\t\t\treturn 'engine.model.operation.AttributeOperation';\n\t\t}\n\t}]);\n\n\treturn AttributeOperation;\n}(_operation2.default);\n\nexports.default = AttributeOperation;\n\n/***/ }),\n/* 71 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _operation = __webpack_require__(32);\n\nvar _operation2 = _interopRequireDefault(_operation);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module engine/model/operation/nooperation\n */\n\n/**\n * Operation which is doing nothing (\"empty operation\", \"do-nothing operation\", \"noop\"). This is an operation,\n * which when executed does not change the tree model. It still has some parameters defined for transformation purposes.\n *\n * In most cases this operation is a result of transforming operations. When transformation returns\n * {@link module:engine/model/operation/nooperation~NoOperation} it means that changes done by the transformed operation\n * have already been applied.\n *\n * @extends module:engine/model/operation/operation~Operation\n */\nvar NoOperation = function (_Operation) {\n\t_inherits(NoOperation, _Operation);\n\n\tfunction NoOperation() {\n\t\t_classCallCheck(this, NoOperation);\n\n\t\treturn _possibleConstructorReturn(this, (NoOperation.__proto__ || Object.getPrototypeOf(NoOperation)).apply(this, arguments));\n\t}\n\n\t_createClass(NoOperation, [{\n\t\tkey: 'clone',\n\n\t\t/**\n   * @inheritDoc\n   * @returns {module:engine/model/operation/nooperation~NoOperation}\n   */\n\t\tvalue: function clone() {\n\t\t\treturn new NoOperation(this.baseVersion);\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   * @returns {module:engine/model/operation/nooperation~NoOperation}\n   */\n\n\t}, {\n\t\tkey: 'getReversed',\n\t\tvalue: function getReversed() {\n\t\t\treturn new NoOperation(this.baseVersion + 1);\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: '_execute',\n\t\tvalue: function _execute() {}\n\t\t// Do nothing.\n\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}], [{\n\t\tkey: 'className',\n\t\tget: function get() {\n\t\t\treturn 'engine.model.operation.NoOperation';\n\t\t}\n\t}]);\n\n\treturn NoOperation;\n}(_operation2.default);\n\nexports.default = NoOperation;\n\n/***/ }),\n/* 72 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _slicedToArray = function () { function sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i[\"return\"]) _i[\"return\"](); } finally { if (_d) throw _e; } } return _arr; } return function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return sliceIterator(arr, i); } else { throw new TypeError(\"Invalid attempt to destructure non-iterable instance\"); } }; }();\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module engine/model/selection\n */\n\nvar _position = __webpack_require__(1);\n\nvar _position2 = _interopRequireDefault(_position);\n\nvar _element = __webpack_require__(5);\n\nvar _element2 = _interopRequireDefault(_element);\n\nvar _range = __webpack_require__(3);\n\nvar _range2 = _interopRequireDefault(_range);\n\nvar _emittermixin = __webpack_require__(8);\n\nvar _emittermixin2 = _interopRequireDefault(_emittermixin);\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nvar _mix = __webpack_require__(4);\n\nvar _mix2 = _interopRequireDefault(_mix);\n\nvar _tomap = __webpack_require__(152);\n\nvar _tomap2 = _interopRequireDefault(_tomap);\n\nvar _mapsequal = __webpack_require__(501);\n\nvar _mapsequal2 = _interopRequireDefault(_mapsequal);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * `Selection` is a group of {@link module:engine/model/range~Range ranges} which has a direction specified by\n * {@link module:engine/model/selection~Selection#anchor anchor} and {@link module:engine/model/selection~Selection#focus focus}.\n * Additionally, `Selection` may have it's own attributes.\n */\nvar Selection = function () {\n\t/**\n  * Creates an empty selection.\n  */\n\tfunction Selection() {\n\t\t_classCallCheck(this, Selection);\n\n\t\t/**\n   * Specifies whether the last added range was added as a backward or forward range.\n   *\n   * @private\n   * @member {Boolean}\n   */\n\t\tthis._lastRangeBackward = false;\n\n\t\t/**\n   * Stores selection ranges.\n   *\n   * @protected\n   * @member {Array.<module:engine/model/range~Range>}\n   */\n\t\tthis._ranges = [];\n\n\t\t/**\n   * List of attributes set on current selection.\n   *\n   * @protected\n   * @member {Map} module:engine/model/selection~Selection#_attrs\n   */\n\t\tthis._attrs = new Map();\n\t}\n\n\t/**\n  * Selection anchor. Anchor may be described as a position where the most recent part of the selection starts.\n  * Together with {@link #focus} they define the direction of selection, which is important\n  * when expanding/shrinking selection. Anchor is always {@link module:engine/model/range~Range#start start} or\n  * {@link module:engine/model/range~Range#end end} position of the most recently added range.\n  *\n  * Is set to `null` if there are no ranges in selection.\n  *\n  * @see #focus\n  * @readonly\n  * @type {module:engine/model/position~Position|null}\n  */\n\n\n\t_createClass(Selection, [{\n\t\tkey: 'isEqual',\n\n\n\t\t/**\n   * Checks whether this selection is equal to given selection. Selections are equal if they have same directions,\n   * same number of ranges and all ranges from one selection equal to a range from other selection.\n   *\n   * @param {module:engine/model/selection~Selection} otherSelection Selection to compare with.\n   * @returns {Boolean} `true` if selections are equal, `false` otherwise.\n   */\n\t\tvalue: function isEqual(otherSelection) {\n\t\t\tif (this.rangeCount != otherSelection.rangeCount) {\n\t\t\t\treturn false;\n\t\t\t} else if (this.rangeCount === 0) {\n\t\t\t\treturn true;\n\t\t\t}\n\n\t\t\tif (!this.anchor.isEqual(otherSelection.anchor) || !this.focus.isEqual(otherSelection.focus)) {\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\tvar _didIteratorError = false;\n\t\t\tvar _iteratorError = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator = this._ranges[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\tvar thisRange = _step.value;\n\n\t\t\t\t\tvar found = false;\n\n\t\t\t\t\tvar _iteratorNormalCompletion2 = true;\n\t\t\t\t\tvar _didIteratorError2 = false;\n\t\t\t\t\tvar _iteratorError2 = undefined;\n\n\t\t\t\t\ttry {\n\t\t\t\t\t\tfor (var _iterator2 = otherSelection._ranges[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {\n\t\t\t\t\t\t\tvar otherRange = _step2.value;\n\n\t\t\t\t\t\t\tif (thisRange.isEqual(otherRange)) {\n\t\t\t\t\t\t\t\tfound = true;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t} catch (err) {\n\t\t\t\t\t\t_didIteratorError2 = true;\n\t\t\t\t\t\t_iteratorError2 = err;\n\t\t\t\t\t} finally {\n\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\tif (!_iteratorNormalCompletion2 && _iterator2.return) {\n\t\t\t\t\t\t\t\t_iterator2.return();\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} finally {\n\t\t\t\t\t\t\tif (_didIteratorError2) {\n\t\t\t\t\t\t\t\tthrow _iteratorError2;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t\tif (!found) {\n\t\t\t\t\t\treturn false;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError = true;\n\t\t\t\t_iteratorError = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn true;\n\t\t}\n\n\t\t/**\n   * Returns an iterator that iterates over copies of selection ranges.\n   *\n   * @returns {Iterator.<module:engine/model/range~Range>}\n   */\n\n\t}, {\n\t\tkey: 'getRanges',\n\t\tvalue: regeneratorRuntime.mark(function getRanges() {\n\t\t\tvar _iteratorNormalCompletion3, _didIteratorError3, _iteratorError3, _iterator3, _step3, range;\n\n\t\t\treturn regeneratorRuntime.wrap(function getRanges$(_context) {\n\t\t\t\twhile (1) {\n\t\t\t\t\tswitch (_context.prev = _context.next) {\n\t\t\t\t\t\tcase 0:\n\t\t\t\t\t\t\t_iteratorNormalCompletion3 = true;\n\t\t\t\t\t\t\t_didIteratorError3 = false;\n\t\t\t\t\t\t\t_iteratorError3 = undefined;\n\t\t\t\t\t\t\t_context.prev = 3;\n\t\t\t\t\t\t\t_iterator3 = this._ranges[Symbol.iterator]();\n\n\t\t\t\t\t\tcase 5:\n\t\t\t\t\t\t\tif (_iteratorNormalCompletion3 = (_step3 = _iterator3.next()).done) {\n\t\t\t\t\t\t\t\t_context.next = 12;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\trange = _step3.value;\n\t\t\t\t\t\t\t_context.next = 9;\n\t\t\t\t\t\t\treturn _range2.default.createFromRange(range);\n\n\t\t\t\t\t\tcase 9:\n\t\t\t\t\t\t\t_iteratorNormalCompletion3 = true;\n\t\t\t\t\t\t\t_context.next = 5;\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase 12:\n\t\t\t\t\t\t\t_context.next = 18;\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase 14:\n\t\t\t\t\t\t\t_context.prev = 14;\n\t\t\t\t\t\t\t_context.t0 = _context['catch'](3);\n\t\t\t\t\t\t\t_didIteratorError3 = true;\n\t\t\t\t\t\t\t_iteratorError3 = _context.t0;\n\n\t\t\t\t\t\tcase 18:\n\t\t\t\t\t\t\t_context.prev = 18;\n\t\t\t\t\t\t\t_context.prev = 19;\n\n\t\t\t\t\t\t\tif (!_iteratorNormalCompletion3 && _iterator3.return) {\n\t\t\t\t\t\t\t\t_iterator3.return();\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\tcase 21:\n\t\t\t\t\t\t\t_context.prev = 21;\n\n\t\t\t\t\t\t\tif (!_didIteratorError3) {\n\t\t\t\t\t\t\t\t_context.next = 24;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\tthrow _iteratorError3;\n\n\t\t\t\t\t\tcase 24:\n\t\t\t\t\t\t\treturn _context.finish(21);\n\n\t\t\t\t\t\tcase 25:\n\t\t\t\t\t\t\treturn _context.finish(18);\n\n\t\t\t\t\t\tcase 26:\n\t\t\t\t\t\tcase 'end':\n\t\t\t\t\t\t\treturn _context.stop();\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}, getRanges, this, [[3, 14, 18, 26], [19,, 21, 25]]);\n\t\t})\n\n\t\t/**\n   * Returns a copy of the first range in the selection.\n   * irst range is the one which {@link module:engine/model/range~Range#start start} position\n   * {@link module:engine/model/position~Position#isBefore is before} start position of all other ranges\n   * (not to confuse with the first range added to the selection).\n   *\n   * Returns `null` if there are no ranges in selection.\n   *\n   * @returns {module:engine/model/range~Range|null}\n   */\n\n\t}, {\n\t\tkey: 'getFirstRange',\n\t\tvalue: function getFirstRange() {\n\t\t\tvar first = null;\n\n\t\t\tvar _iteratorNormalCompletion4 = true;\n\t\t\tvar _didIteratorError4 = false;\n\t\t\tvar _iteratorError4 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator4 = this._ranges[Symbol.iterator](), _step4; !(_iteratorNormalCompletion4 = (_step4 = _iterator4.next()).done); _iteratorNormalCompletion4 = true) {\n\t\t\t\t\tvar range = _step4.value;\n\n\t\t\t\t\tif (!first || range.start.isBefore(first.start)) {\n\t\t\t\t\t\tfirst = range;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError4 = true;\n\t\t\t\t_iteratorError4 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion4 && _iterator4.return) {\n\t\t\t\t\t\t_iterator4.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError4) {\n\t\t\t\t\t\tthrow _iteratorError4;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn first ? _range2.default.createFromRange(first) : null;\n\t\t}\n\n\t\t/**\n   * Returns a copy of the last range in the selection.\n   * Last range is the one which {@link module:engine/model/range~Range#end end} position\n   * {@link module:engine/model/position~Position#isAfter is after} end position of all other ranges (not to confuse with the range most\n   * recently added to the selection).\n   *\n   * Returns `null` if there are no ranges in selection.\n   *\n   * @returns {module:engine/model/range~Range|null}\n   */\n\n\t}, {\n\t\tkey: 'getLastRange',\n\t\tvalue: function getLastRange() {\n\t\t\tvar last = null;\n\n\t\t\tvar _iteratorNormalCompletion5 = true;\n\t\t\tvar _didIteratorError5 = false;\n\t\t\tvar _iteratorError5 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator5 = this._ranges[Symbol.iterator](), _step5; !(_iteratorNormalCompletion5 = (_step5 = _iterator5.next()).done); _iteratorNormalCompletion5 = true) {\n\t\t\t\t\tvar range = _step5.value;\n\n\t\t\t\t\tif (!last || range.end.isAfter(last.end)) {\n\t\t\t\t\t\tlast = range;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError5 = true;\n\t\t\t\t_iteratorError5 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion5 && _iterator5.return) {\n\t\t\t\t\t\t_iterator5.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError5) {\n\t\t\t\t\t\tthrow _iteratorError5;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn last ? _range2.default.createFromRange(last) : null;\n\t\t}\n\n\t\t/**\n   * Returns the first position in the selection.\n   * First position is the position that {@link module:engine/model/position~Position#isBefore is before}\n   * any other position in the selection.\n   *\n   * Returns `null` if there are no ranges in selection.\n   *\n   * @returns {module:engine/model/position~Position|null}\n   */\n\n\t}, {\n\t\tkey: 'getFirstPosition',\n\t\tvalue: function getFirstPosition() {\n\t\t\tvar first = this.getFirstRange();\n\n\t\t\treturn first ? _position2.default.createFromPosition(first.start) : null;\n\t\t}\n\n\t\t/**\n   * Returns the last position in the selection.\n   * Last position is the position that {@link module:engine/model/position~Position#isAfter is after}\n   * any other position in the selection.\n   *\n   * Returns `null` if there are no ranges in selection.\n   *\n   * @returns {module:engine/model/position~Position|null}\n   */\n\n\t}, {\n\t\tkey: 'getLastPosition',\n\t\tvalue: function getLastPosition() {\n\t\t\tvar lastRange = this.getLastRange();\n\n\t\t\treturn lastRange ? _position2.default.createFromPosition(lastRange.end) : null;\n\t\t}\n\n\t\t/**\n   * Adds a range to this selection. Added range is copied. This means that passed range is not saved in `Selection`\n   * instance and operating on it will not change `Selection` state.\n   *\n   * Accepts a flag describing in which way the selection is made - passed range might be selected from\n   * {@link module:engine/model/range~Range#start start} to {@link module:engine/model/range~Range#end end}\n   * or from {@link module:engine/model/range~Range#end end}\n   * to {@link module:engine/model/range~Range#start start}.\n   * The flag is used to set {@link #anchor} and\n   * {@link #focus} properties.\n   *\n   * @fires change:range\n   * @param {module:engine/model/range~Range} range Range to add.\n   * @param {Boolean} [isBackward=false] Flag describing if added range was selected forward - from start to end (`false`)\n   * or backward - from end to start (`true`).\n   */\n\n\t}, {\n\t\tkey: 'addRange',\n\t\tvalue: function addRange(range) {\n\t\t\tvar isBackward = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;\n\n\t\t\tthis._pushRange(range);\n\t\t\tthis._lastRangeBackward = !!isBackward;\n\n\t\t\tthis.fire('change:range', { directChange: true });\n\t\t}\n\n\t\t/**\n   * Removes all ranges that were added to the selection.\n   *\n   * @fires change:range\n   */\n\n\t}, {\n\t\tkey: 'removeAllRanges',\n\t\tvalue: function removeAllRanges() {\n\t\t\tif (this._ranges.length > 0) {\n\t\t\t\tthis._removeAllRanges();\n\t\t\t\tthis.fire('change:range', { directChange: true });\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Replaces all ranges that were added to the selection with given array of ranges. Last range of the array\n   * is treated like the last added range and is used to set {@link module:engine/model/selection~Selection#anchor} and\n   * {@link module:engine/model/selection~Selection#focus}. Accepts a flag describing in which direction the selection is made\n   * (see {@link module:engine/model/selection~Selection#addRange}).\n   *\n   * @fires change:range\n   * @param {Iterable.<module:engine/model/range~Range>} newRanges Ranges to set.\n   * @param {Boolean} [isLastBackward=false] Flag describing if last added range was selected forward - from start to end (`false`)\n   * or backward - from end to start (`true`).\n   */\n\n\t}, {\n\t\tkey: 'setRanges',\n\t\tvalue: function setRanges(newRanges) {\n\t\t\tvar _this = this;\n\n\t\t\tvar isLastBackward = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;\n\n\t\t\tnewRanges = Array.from(newRanges);\n\n\t\t\t// Check whether there is any range in new ranges set that is different than all already added ranges.\n\t\t\tvar anyNewRange = newRanges.some(function (newRange) {\n\t\t\t\tif (!(newRange instanceof _range2.default)) {\n\t\t\t\t\tthrow new _ckeditorerror2.default('model-selection-added-not-range: Trying to add an object that is not an instance of Range.');\n\t\t\t\t}\n\n\t\t\t\treturn _this._ranges.every(function (oldRange) {\n\t\t\t\t\treturn !oldRange.isEqual(newRange);\n\t\t\t\t});\n\t\t\t});\n\n\t\t\t// Don't do anything if nothing changed.\n\t\t\tif (newRanges.length === this._ranges.length && !anyNewRange) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tthis._removeAllRanges();\n\n\t\t\tvar _iteratorNormalCompletion6 = true;\n\t\t\tvar _didIteratorError6 = false;\n\t\t\tvar _iteratorError6 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator6 = newRanges[Symbol.iterator](), _step6; !(_iteratorNormalCompletion6 = (_step6 = _iterator6.next()).done); _iteratorNormalCompletion6 = true) {\n\t\t\t\t\tvar range = _step6.value;\n\n\t\t\t\t\tthis._pushRange(range);\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError6 = true;\n\t\t\t\t_iteratorError6 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion6 && _iterator6.return) {\n\t\t\t\t\t\t_iterator6.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError6) {\n\t\t\t\t\t\tthrow _iteratorError6;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tthis._lastRangeBackward = !!isLastBackward;\n\n\t\t\tthis.fire('change:range', { directChange: true });\n\t\t}\n\n\t\t/**\n   * Sets this selection's ranges and direction to the ranges and direction of the given selection.\n   *\n   * @param {module:engine/model/selection~Selection} otherSelection\n   */\n\n\t}, {\n\t\tkey: 'setTo',\n\t\tvalue: function setTo(otherSelection) {\n\t\t\tthis.setRanges(otherSelection.getRanges(), otherSelection.isBackward);\n\t\t}\n\n\t\t/**\n   * Sets collapsed selection in the specified location.\n   *\n   * The location can be specified in the same form as {@link module:engine/model/position~Position.createAt} parameters.\n   *\n   * @fires change:range\n   * @param {module:engine/model/item~Item|module:engine/model/position~Position} itemOrPosition\n   * @param {Number|'end'|'before'|'after'} [offset=0] Offset or one of the flags. Used only when\n   * first parameter is a {@link module:engine/model/item~Item model item}.\n   */\n\n\t}, {\n\t\tkey: 'collapse',\n\t\tvalue: function collapse(itemOrPosition, offset) {\n\t\t\tvar pos = _position2.default.createAt(itemOrPosition, offset);\n\t\t\tvar range = new _range2.default(pos, pos);\n\n\t\t\tthis.setRanges([range]);\n\t\t}\n\n\t\t/**\n   * Collapses selection to the selection's {@link module:engine/model/selection~Selection#getFirstPosition first position}.\n   * All ranges, besides the collapsed one, will be removed. Nothing will change if there are no ranges stored\n   * inside selection.\n   *\n   * @fires change\n   */\n\n\t}, {\n\t\tkey: 'collapseToStart',\n\t\tvalue: function collapseToStart() {\n\t\t\tvar startPosition = this.getFirstPosition();\n\n\t\t\tif (startPosition !== null) {\n\t\t\t\tthis.setRanges([new _range2.default(startPosition, startPosition)]);\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Collapses selection to the selection's {@link module:engine/model/selection~Selection#getLastPosition last position}.\n   * All ranges, besides the collapsed one, will be removed. Nothing will change if there are no ranges stored\n   * inside selection.\n   *\n   * @fires change\n   */\n\n\t}, {\n\t\tkey: 'collapseToEnd',\n\t\tvalue: function collapseToEnd() {\n\t\t\tvar endPosition = this.getLastPosition();\n\n\t\t\tif (endPosition !== null) {\n\t\t\t\tthis.setRanges([new _range2.default(endPosition, endPosition)]);\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Sets {@link module:engine/model/selection~Selection#focus} to the specified location.\n   *\n   * The location can be specified in the same form as {@link module:engine/model/position~Position.createAt} parameters.\n   *\n   * @fires change:range\n   * @param {module:engine/model/item~Item|module:engine/model/position~Position} itemOrPosition\n   * @param {Number|'end'|'before'|'after'} [offset=0] Offset or one of the flags. Used only when\n   * first parameter is a {@link module:engine/model/item~Item model item}.\n   */\n\n\t}, {\n\t\tkey: 'setFocus',\n\t\tvalue: function setFocus(itemOrPosition, offset) {\n\t\t\tif (this.anchor === null) {\n\t\t\t\t/**\n     * Cannot set selection focus if there are no ranges in selection.\n     *\n     * @error model-selection-setFocus-no-ranges\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('model-selection-setFocus-no-ranges: Cannot set selection focus if there are no ranges in selection.');\n\t\t\t}\n\n\t\t\tvar newFocus = _position2.default.createAt(itemOrPosition, offset);\n\n\t\t\tif (newFocus.compareWith(this.focus) == 'same') {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tvar anchor = this.anchor;\n\n\t\t\tif (this._ranges.length) {\n\t\t\t\tthis._popRange();\n\t\t\t}\n\n\t\t\tif (newFocus.compareWith(anchor) == 'before') {\n\t\t\t\tthis.addRange(new _range2.default(newFocus, anchor), true);\n\t\t\t} else {\n\t\t\t\tthis.addRange(new _range2.default(anchor, newFocus));\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Gets an attribute value for given key or `undefined` if that attribute is not set on the selection.\n   *\n   * @param {String} key Key of attribute to look for.\n   * @returns {*} Attribute value or `undefined`.\n   */\n\n\t}, {\n\t\tkey: 'getAttribute',\n\t\tvalue: function getAttribute(key) {\n\t\t\treturn this._attrs.get(key);\n\t\t}\n\n\t\t/**\n   * Returns iterator that iterates over this selection's attributes.\n   *\n   * Attributes are returned as arrays containing two items. First one is attribute key and second is attribute value.\n   * This format is accepted by native `Map` object and also can be passed in `Node` constructor.\n   *\n   * @returns {Iterable.<*>}\n   */\n\n\t}, {\n\t\tkey: 'getAttributes',\n\t\tvalue: function getAttributes() {\n\t\t\treturn this._attrs.entries();\n\t\t}\n\n\t\t/**\n   * Returns iterator that iterates over this selection's attribute keys.\n   *\n   * @returns {Iterator.<String>}\n   */\n\n\t}, {\n\t\tkey: 'getAttributeKeys',\n\t\tvalue: function getAttributeKeys() {\n\t\t\treturn this._attrs.keys();\n\t\t}\n\n\t\t/**\n   * Checks if the selection has an attribute for given key.\n   *\n   * @param {String} key Key of attribute to check.\n   * @returns {Boolean} `true` if attribute with given key is set on selection, `false` otherwise.\n   */\n\n\t}, {\n\t\tkey: 'hasAttribute',\n\t\tvalue: function hasAttribute(key) {\n\t\t\treturn this._attrs.has(key);\n\t\t}\n\n\t\t/**\n   * Removes all attributes from the selection.\n   *\n   * If there were any attributes in selection, fires the {@link #event:change} event with\n   * removed attributes' keys.\n   *\n   * @fires change:attribute\n   */\n\n\t}, {\n\t\tkey: 'clearAttributes',\n\t\tvalue: function clearAttributes() {\n\t\t\tif (this._attrs.size > 0) {\n\t\t\t\tvar attributeKeys = Array.from(this._attrs.keys());\n\t\t\t\tthis._attrs.clear();\n\n\t\t\t\tthis.fire('change:attribute', { attributeKeys: attributeKeys, directChange: true });\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Removes an attribute with given key from the selection.\n   *\n   * If given attribute was set on the selection, fires the {@link #event:change} event with\n   * removed attribute key.\n   *\n   * @fires change:attribute\n   * @param {String} key Key of attribute to remove.\n   */\n\n\t}, {\n\t\tkey: 'removeAttribute',\n\t\tvalue: function removeAttribute(key) {\n\t\t\tif (this.hasAttribute(key)) {\n\t\t\t\tthis._attrs.delete(key);\n\n\t\t\t\tthis.fire('change:attribute', { attributeKeys: [key], directChange: true });\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Sets attribute on the selection. If attribute with the same key already is set, it's value is overwritten.\n   *\n   * If the attribute value has changed, fires the {@link #event:change} event with\n   * the attribute key.\n   *\n   * @fires change:attribute\n   * @param {String} key Key of attribute to set.\n   * @param {*} value Attribute value.\n   */\n\n\t}, {\n\t\tkey: 'setAttribute',\n\t\tvalue: function setAttribute(key, value) {\n\t\t\tif (this.getAttribute(key) !== value) {\n\t\t\t\tthis._attrs.set(key, value);\n\n\t\t\t\tthis.fire('change:attribute', { attributeKeys: [key], directChange: true });\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Removes all attributes from the selection and sets given attributes.\n   *\n   * If given set of attributes is different than set of attributes already added to selection, fires\n   * {@link #event:change change event} with keys of attributes that changed.\n   *\n   * @fires event:change:attribute\n   * @param {Iterable|Object} attrs Iterable object containing attributes to be set.\n   */\n\n\t}, {\n\t\tkey: 'setAttributesTo',\n\t\tvalue: function setAttributesTo(attrs) {\n\t\t\tattrs = (0, _tomap2.default)(attrs);\n\n\t\t\tif (!(0, _mapsequal2.default)(attrs, this._attrs)) {\n\t\t\t\t// Create a set from keys of old and new attributes.\n\t\t\t\tvar changed = new Set(Array.from(attrs.keys()).concat(Array.from(this._attrs.keys())));\n\n\t\t\t\tvar _iteratorNormalCompletion7 = true;\n\t\t\t\tvar _didIteratorError7 = false;\n\t\t\t\tvar _iteratorError7 = undefined;\n\n\t\t\t\ttry {\n\t\t\t\t\tfor (var _iterator7 = attrs[Symbol.iterator](), _step7; !(_iteratorNormalCompletion7 = (_step7 = _iterator7.next()).done); _iteratorNormalCompletion7 = true) {\n\t\t\t\t\t\tvar _step7$value = _slicedToArray(_step7.value, 2),\n\t\t\t\t\t\t    key = _step7$value[0],\n\t\t\t\t\t\t    value = _step7$value[1];\n\n\t\t\t\t\t\t// If the attribute remains unchanged, remove it from changed set.\n\t\t\t\t\t\tif (this._attrs.get(key) === value) {\n\t\t\t\t\t\t\tchanged.delete(key);\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t} catch (err) {\n\t\t\t\t\t_didIteratorError7 = true;\n\t\t\t\t\t_iteratorError7 = err;\n\t\t\t\t} finally {\n\t\t\t\t\ttry {\n\t\t\t\t\t\tif (!_iteratorNormalCompletion7 && _iterator7.return) {\n\t\t\t\t\t\t\t_iterator7.return();\n\t\t\t\t\t\t}\n\t\t\t\t\t} finally {\n\t\t\t\t\t\tif (_didIteratorError7) {\n\t\t\t\t\t\t\tthrow _iteratorError7;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\tthis._attrs = attrs;\n\n\t\t\t\tthis.fire('change:attribute', { attributeKeys: Array.from(changed), directChange: true });\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Returns the selected element. {@link module:engine/model/element~Element Element} is considered as selected if there is only\n   * one range in the selection, and that range contains exactly one element.\n   * Returns `null` if there is no selected element.\n   *\n   * @returns {module:engine/model/element~Element|null}\n   */\n\n\t}, {\n\t\tkey: 'getSelectedElement',\n\t\tvalue: function getSelectedElement() {\n\t\t\tif (this.rangeCount !== 1) {\n\t\t\t\treturn null;\n\t\t\t}\n\n\t\t\tvar range = this.getFirstRange();\n\t\t\tvar nodeAfterStart = range.start.nodeAfter;\n\t\t\tvar nodeBeforeEnd = range.end.nodeBefore;\n\n\t\t\treturn nodeAfterStart instanceof _element2.default && nodeAfterStart == nodeBeforeEnd ? nodeAfterStart : null;\n\t\t}\n\n\t\t/**\n   * Gets elements of type \"block\" touched by the selection.\n   *\n   * This method's result can be used for example to apply block styling to all blocks covered by this selection.\n   *\n   * *Note:* `getSelectedBlocks` always returns the deepest block.\n   *\n   * In this case the function will return exactly all 3 paragraphs:\n   *\n   *\t\t<paragraph>[a</paragraph>\n   *\t\t<quote>\n   *\t\t\t<paragraph>b</paragraph>\n   *\t\t</quote>\n   *\t\t<paragraph>c]d</paragraph>\n   *\n   * In this case the paragraph will also be returned, despite the collapsed selection:\n   *\n   *\t\t<paragraph>[]a</paragraph>\n   *\n   * @returns {Iterator.<module:engine/model/element~Element>}\n   */\n\n\t}, {\n\t\tkey: 'getSelectedBlocks',\n\t\tvalue: regeneratorRuntime.mark(function getSelectedBlocks() {\n\t\t\tvar visited, _iteratorNormalCompletion8, _didIteratorError8, _iteratorError8, _iterator8, _step8, range, startBlock, _iteratorNormalCompletion9, _didIteratorError9, _iteratorError9, _iterator9, _step9, value, endBlock;\n\n\t\t\treturn regeneratorRuntime.wrap(function getSelectedBlocks$(_context2) {\n\t\t\t\twhile (1) {\n\t\t\t\t\tswitch (_context2.prev = _context2.next) {\n\t\t\t\t\t\tcase 0:\n\t\t\t\t\t\t\tvisited = new WeakSet();\n\t\t\t\t\t\t\t_iteratorNormalCompletion8 = true;\n\t\t\t\t\t\t\t_didIteratorError8 = false;\n\t\t\t\t\t\t\t_iteratorError8 = undefined;\n\t\t\t\t\t\t\t_context2.prev = 4;\n\t\t\t\t\t\t\t_iterator8 = this.getRanges()[Symbol.iterator]();\n\n\t\t\t\t\t\tcase 6:\n\t\t\t\t\t\t\tif (_iteratorNormalCompletion8 = (_step8 = _iterator8.next()).done) {\n\t\t\t\t\t\t\t\t_context2.next = 46;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\trange = _step8.value;\n\t\t\t\t\t\t\tstartBlock = getParentBlock(range.start, visited);\n\n\t\t\t\t\t\t\tif (!startBlock) {\n\t\t\t\t\t\t\t\t_context2.next = 12;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t_context2.next = 12;\n\t\t\t\t\t\t\treturn startBlock;\n\n\t\t\t\t\t\tcase 12:\n\t\t\t\t\t\t\t_iteratorNormalCompletion9 = true;\n\t\t\t\t\t\t\t_didIteratorError9 = false;\n\t\t\t\t\t\t\t_iteratorError9 = undefined;\n\t\t\t\t\t\t\t_context2.prev = 15;\n\t\t\t\t\t\t\t_iterator9 = range.getWalker()[Symbol.iterator]();\n\n\t\t\t\t\t\tcase 17:\n\t\t\t\t\t\t\tif (_iteratorNormalCompletion9 = (_step9 = _iterator9.next()).done) {\n\t\t\t\t\t\t\t\t_context2.next = 25;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\tvalue = _step9.value;\n\n\t\t\t\t\t\t\tif (!(value.type == 'elementEnd' && isUnvisitedBlockContainer(value.item, visited))) {\n\t\t\t\t\t\t\t\t_context2.next = 22;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t_context2.next = 22;\n\t\t\t\t\t\t\treturn value.item;\n\n\t\t\t\t\t\tcase 22:\n\t\t\t\t\t\t\t_iteratorNormalCompletion9 = true;\n\t\t\t\t\t\t\t_context2.next = 17;\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase 25:\n\t\t\t\t\t\t\t_context2.next = 31;\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase 27:\n\t\t\t\t\t\t\t_context2.prev = 27;\n\t\t\t\t\t\t\t_context2.t0 = _context2['catch'](15);\n\t\t\t\t\t\t\t_didIteratorError9 = true;\n\t\t\t\t\t\t\t_iteratorError9 = _context2.t0;\n\n\t\t\t\t\t\tcase 31:\n\t\t\t\t\t\t\t_context2.prev = 31;\n\t\t\t\t\t\t\t_context2.prev = 32;\n\n\t\t\t\t\t\t\tif (!_iteratorNormalCompletion9 && _iterator9.return) {\n\t\t\t\t\t\t\t\t_iterator9.return();\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\tcase 34:\n\t\t\t\t\t\t\t_context2.prev = 34;\n\n\t\t\t\t\t\t\tif (!_didIteratorError9) {\n\t\t\t\t\t\t\t\t_context2.next = 37;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\tthrow _iteratorError9;\n\n\t\t\t\t\t\tcase 37:\n\t\t\t\t\t\t\treturn _context2.finish(34);\n\n\t\t\t\t\t\tcase 38:\n\t\t\t\t\t\t\treturn _context2.finish(31);\n\n\t\t\t\t\t\tcase 39:\n\t\t\t\t\t\t\tendBlock = getParentBlock(range.end, visited);\n\n\t\t\t\t\t\t\tif (!endBlock) {\n\t\t\t\t\t\t\t\t_context2.next = 43;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t_context2.next = 43;\n\t\t\t\t\t\t\treturn endBlock;\n\n\t\t\t\t\t\tcase 43:\n\t\t\t\t\t\t\t_iteratorNormalCompletion8 = true;\n\t\t\t\t\t\t\t_context2.next = 6;\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase 46:\n\t\t\t\t\t\t\t_context2.next = 52;\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase 48:\n\t\t\t\t\t\t\t_context2.prev = 48;\n\t\t\t\t\t\t\t_context2.t1 = _context2['catch'](4);\n\t\t\t\t\t\t\t_didIteratorError8 = true;\n\t\t\t\t\t\t\t_iteratorError8 = _context2.t1;\n\n\t\t\t\t\t\tcase 52:\n\t\t\t\t\t\t\t_context2.prev = 52;\n\t\t\t\t\t\t\t_context2.prev = 53;\n\n\t\t\t\t\t\t\tif (!_iteratorNormalCompletion8 && _iterator8.return) {\n\t\t\t\t\t\t\t\t_iterator8.return();\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\tcase 55:\n\t\t\t\t\t\t\t_context2.prev = 55;\n\n\t\t\t\t\t\t\tif (!_didIteratorError8) {\n\t\t\t\t\t\t\t\t_context2.next = 58;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\tthrow _iteratorError8;\n\n\t\t\t\t\t\tcase 58:\n\t\t\t\t\t\t\treturn _context2.finish(55);\n\n\t\t\t\t\t\tcase 59:\n\t\t\t\t\t\t\treturn _context2.finish(52);\n\n\t\t\t\t\t\tcase 60:\n\t\t\t\t\t\tcase 'end':\n\t\t\t\t\t\t\treturn _context2.stop();\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}, getSelectedBlocks, this, [[4, 48, 52, 60], [15, 27, 31, 39], [32,, 34, 38], [53,, 55, 59]]);\n\t\t})\n\n\t\t/**\n   * Creates and returns an instance of `Selection` that is a clone of given selection, meaning that it has same\n   * ranges and same direction as this selection.\n   *\n   * @params {module:engine/model/selection~Selection} otherSelection Selection to be cloned.\n   * @returns {module:engine/model/selection~Selection} `Selection` instance that is a clone of given selection.\n   */\n\n\t}, {\n\t\tkey: '_pushRange',\n\n\n\t\t/**\n   * Adds given range to internal {@link #_ranges ranges array}. Throws an error\n   * if given range is intersecting with any range that is already stored in this selection.\n   *\n   * @protected\n   * @param {module:engine/model/range~Range} range Range to add.\n   */\n\t\tvalue: function _pushRange(range) {\n\t\t\tif (!(range instanceof _range2.default)) {\n\t\t\t\tthrow new _ckeditorerror2.default('model-selection-added-not-range: Trying to add an object that is not an instance of Range.');\n\t\t\t}\n\n\t\t\tthis._checkRange(range);\n\t\t\tthis._ranges.push(_range2.default.createFromRange(range));\n\t\t}\n\n\t\t/**\n   * Checks if given range intersects with ranges that are already in the selection. Throws an error if it does.\n   *\n   * @protected\n   * @param {module:engine/model/range~Range} range Range to check.\n   */\n\n\t}, {\n\t\tkey: '_checkRange',\n\t\tvalue: function _checkRange(range) {\n\t\t\tfor (var i = 0; i < this._ranges.length; i++) {\n\t\t\t\tif (range.isIntersecting(this._ranges[i])) {\n\t\t\t\t\t/**\n      * Trying to add a range that intersects with another range from selection.\n      *\n      * @error selection-range-intersects\n      * @param {module:engine/model/range~Range} addedRange Range that was added to the selection.\n      * @param {module:engine/model/range~Range} intersectingRange Range from selection that intersects with `addedRange`.\n      */\n\t\t\t\t\tthrow new _ckeditorerror2.default('model-selection-range-intersects: Trying to add a range that intersects with another range from selection.', { addedRange: range, intersectingRange: this._ranges[i] });\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Removes most recently added range from the selection.\n   *\n   * @protected\n   */\n\n\t}, {\n\t\tkey: '_popRange',\n\t\tvalue: function _popRange() {\n\t\t\tthis._ranges.pop();\n\t\t}\n\n\t\t/**\n   * Deletes ranges from internal range array. Uses {@link #_popRange _popRange} to\n   * ensure proper ranges removal.\n   *\n   * @private\n   */\n\n\t}, {\n\t\tkey: '_removeAllRanges',\n\t\tvalue: function _removeAllRanges() {\n\t\t\twhile (this._ranges.length > 0) {\n\t\t\t\tthis._popRange();\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * @event change\n   */\n\n\t\t/**\n   * Fired whenever selection ranges are changed.\n   *\n   * @event change:range\n   * @param {Boolean} directChange Specifies whether the range change was caused by direct usage of `Selection` API (`true`)\n   * or by changes done to {@link module:engine/model/document~Document model document}\n   * using {@link module:engine/model/batch~Batch Batch} API (`false`).\n   */\n\n\t\t/**\n   * Fired whenever selection attributes are changed.\n   *\n   * @event change:attribute\n   * @param {Boolean} directChange Specifies whether the attributes changed by direct usage of the Selection API (`true`)\n   * or by changes done to the {@link module:engine/model/document~Document model document}\n   * using the {@link module:engine/model/batch~Batch Batch} API (`false`).\n   * @param {Array.<String>} attributeKeys Array containing keys of attributes that changed.\n   */\n\n\t}, {\n\t\tkey: 'anchor',\n\t\tget: function get() {\n\t\t\tif (this._ranges.length > 0) {\n\t\t\t\tvar range = this._ranges[this._ranges.length - 1];\n\n\t\t\t\treturn this._lastRangeBackward ? range.end : range.start;\n\t\t\t}\n\n\t\t\treturn null;\n\t\t}\n\n\t\t/**\n   * Selection focus. Focus is a position where the selection ends.\n   *\n   * Is set to `null` if there are no ranges in selection.\n   *\n   * @see #anchor\n   * @readonly\n   * @type {module:engine/model/position~Position|null}\n   */\n\n\t}, {\n\t\tkey: 'focus',\n\t\tget: function get() {\n\t\t\tif (this._ranges.length > 0) {\n\t\t\t\tvar range = this._ranges[this._ranges.length - 1];\n\n\t\t\t\treturn this._lastRangeBackward ? range.start : range.end;\n\t\t\t}\n\n\t\t\treturn null;\n\t\t}\n\n\t\t/**\n   * Returns whether the selection is collapsed. Selection is collapsed when there is exactly one range which is\n   * collapsed.\n   *\n   * @readonly\n   * @type {Boolean}\n   */\n\n\t}, {\n\t\tkey: 'isCollapsed',\n\t\tget: function get() {\n\t\t\tvar length = this._ranges.length;\n\n\t\t\tif (length === 1) {\n\t\t\t\treturn this._ranges[0].isCollapsed;\n\t\t\t} else {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Returns number of ranges in selection.\n   *\n   * @type {Number}\n   */\n\n\t}, {\n\t\tkey: 'rangeCount',\n\t\tget: function get() {\n\t\t\treturn this._ranges.length;\n\t\t}\n\n\t\t/**\n   * Specifies whether the {@link #focus}\n   * precedes {@link #anchor}.\n   *\n   * @type {Boolean}\n   */\n\n\t}, {\n\t\tkey: 'isBackward',\n\t\tget: function get() {\n\t\t\treturn !this.isCollapsed && this._lastRangeBackward;\n\t\t}\n\t}], [{\n\t\tkey: 'createFromSelection',\n\t\tvalue: function createFromSelection(otherSelection) {\n\t\t\tvar selection = new this();\n\t\t\tselection.setTo(otherSelection);\n\n\t\t\treturn selection;\n\t\t}\n\t}]);\n\n\treturn Selection;\n}();\n\nexports.default = Selection;\n\n\n(0, _mix2.default)(Selection, _emittermixin2.default);\n\n// Checks whether the given element extends $block in the schema and has a parent (is not a root).\n// Marks it as already visited.\nfunction isUnvisitedBlockContainer(element, visited) {\n\tif (visited.has(element)) {\n\t\treturn false;\n\t}\n\n\tvisited.add(element);\n\n\t// TODO https://github.com/ckeditor/ckeditor5-engine/issues/532#issuecomment-278900072.\n\t// This should not be a `$block` check.\n\treturn element.document.schema.itemExtends(element.name, '$block') && element.parent;\n}\n\n// Finds the lowest element in position's ancestors which is a block.\n// Marks all ancestors as already visited to not include any of them later on.\nfunction getParentBlock(position, visited) {\n\tvar ancestors = position.parent.getAncestors({ parentFirst: true, includeNode: true });\n\tvar block = ancestors.find(function (element) {\n\t\treturn isUnvisitedBlockContainer(element, visited);\n\t});\n\n\t// Mark all ancestors of this position's parent, because find() might've stopped early and\n\t// the found block may be a child of another block.\n\tancestors.forEach(function (element) {\n\t\treturn visited.add(element);\n\t});\n\n\treturn block;\n}\n\n/***/ }),\n/* 73 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _containerelement = __webpack_require__(39);\n\nvar _containerelement2 = _interopRequireDefault(_containerelement);\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nvar _mix = __webpack_require__(4);\n\nvar _mix2 = _interopRequireDefault(_mix);\n\nvar _observablemixin = __webpack_require__(31);\n\nvar _observablemixin2 = _interopRequireDefault(_observablemixin);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module engine/view/editableelement\n */\n\nvar documentSymbol = Symbol('document');\n\n/**\n * Editable element which can be a {@link module:engine/view/rooteditableelement~RootEditableElement root}\n * or nested editable area in the editor.\n *\n * @extends module:engine/view/containerelement~ContainerElement\n * @mixes module:utils/observablemixin~ObservaleMixin\n */\n\nvar EditableElement = function (_ContainerElement) {\n\t_inherits(EditableElement, _ContainerElement);\n\n\t/**\n  * Creates an editable element.\n  */\n\tfunction EditableElement(name, attrs, children) {\n\t\t_classCallCheck(this, EditableElement);\n\n\t\t/**\n   * Whether the editable is in read-write or read-only mode.\n   *\n   * @observable\n   * @member {Boolean} module:engine/view/editableelement~EditableElement#isReadOnly\n   */\n\t\tvar _this = _possibleConstructorReturn(this, (EditableElement.__proto__ || Object.getPrototypeOf(EditableElement)).call(this, name, attrs, children));\n\n\t\t_this.set('isReadOnly', false);\n\n\t\t/**\n   * Whether the editable is focused.\n   *\n   * This property updates when {@link module:engine/view/document~Document#isFocused document.isFocused} is changed and after each\n   * {@link module:engine/view/document~Document#render render} method call.\n   *\n   * @readonly\n   * @observable\n   * @member {Boolean} module:engine/view/editableelement~EditableElement#isFocused\n   */\n\t\t_this.set('isFocused', false);\n\n\t\t/**\n   * The {@link module:engine/view/document~Document} which is an owner of this root.\n   * Can only by set once.\n   * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-editableelement-document-already-set`\n   * when document is already set.\n   *\n   * @member {module:engine/view/document~Document} #document\n   */\n\t\treturn _this;\n\t}\n\n\t_createClass(EditableElement, [{\n\t\tkey: 'document',\n\t\tget: function get() {\n\t\t\treturn this.getCustomProperty(documentSymbol);\n\t\t},\n\t\tset: function set(document) {\n\t\t\tvar _this2 = this;\n\n\t\t\tif (this.getCustomProperty(documentSymbol)) {\n\t\t\t\t/**\n     * View document is already set. It can only be set once.\n     *\n     * @error view-editableelement-document-already-set\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('view-editableelement-document-already-set: View document is already set.');\n\t\t\t}\n\n\t\t\tthis.setCustomProperty(documentSymbol, document);\n\n\t\t\tthis.bind('isFocused').to(document, 'isFocused', function (isFocused) {\n\t\t\t\treturn isFocused && document.selection.editableElement == _this2;\n\t\t\t});\n\n\t\t\t// Update focus state before each rendering. Rendering should not change neither the selection nor the value of\n\t\t\t// document.isFocused property.\n\t\t\tthis.listenTo(document, 'render', function () {\n\t\t\t\t_this2.isFocused = document.isFocused && document.selection.editableElement == _this2;\n\t\t\t}, { priority: 'high' });\n\t\t}\n\t}]);\n\n\treturn EditableElement;\n}(_containerelement2.default);\n\nexports.default = EditableElement;\n\n\n(0, _mix2.default)(EditableElement, _observablemixin2.default);\n\n/***/ }),\n/* 74 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module engine/view/node\n */\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nvar _emittermixin = __webpack_require__(8);\n\nvar _emittermixin2 = _interopRequireDefault(_emittermixin);\n\nvar _mix = __webpack_require__(4);\n\nvar _mix2 = _interopRequireDefault(_mix);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * Abstract tree view node class.\n *\n * @abstract\n */\nvar Node = function () {\n\t/**\n  * Creates a tree view node.\n  *\n  * This is an abstract class, so this constructor should not be used directly.\n  */\n\tfunction Node() {\n\t\t_classCallCheck(this, Node);\n\n\t\t/**\n   * Parent element. Null by default. Set by {@link module:engine/view/element~Element#insertChildren}.\n   *\n   * @readonly\n   * @member {module:engine/view/element~Element|module:engine/view/documentfragment~DocumentFragment|null}\n   */\n\t\tthis.parent = null;\n\t}\n\n\t/**\n  * Index of the node in the parent element or null if the node has no parent.\n  *\n  * Accessing this property throws an error if this node's parent element does not contain it.\n  * This means that view tree got broken.\n  *\n  * @readonly\n  * @type {Number|null}\n  */\n\n\n\t_createClass(Node, [{\n\t\tkey: 'getAncestors',\n\n\n\t\t/**\n   * Returns ancestors array of this node.\n   *\n   * @param {Object} options Options object.\n   * @param {Boolean} [options.includeNode=false] When set to `true` this node will be also included in parent's array.\n   * @param {Boolean} [options.parentFirst=false] When set to `true`, array will be sorted from node's parent to root element,\n   * otherwise root element will be the first item in the array.\n   * @returns {Array} Array with ancestors.\n   */\n\t\tvalue: function getAncestors() {\n\t\t\tvar options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : { includeNode: false, parentFirst: false };\n\n\t\t\tvar ancestors = [];\n\t\t\tvar parent = options.includeNode ? this : this.parent;\n\n\t\t\twhile (parent) {\n\t\t\t\tancestors[options.parentFirst ? 'push' : 'unshift'](parent);\n\t\t\t\tparent = parent.parent;\n\t\t\t}\n\n\t\t\treturn ancestors;\n\t\t}\n\n\t\t/**\n   * Removes node from parent.\n   */\n\n\t}, {\n\t\tkey: 'remove',\n\t\tvalue: function remove() {\n\t\t\tthis.parent.removeChildren(this.index);\n\t\t}\n\n\t\t/**\n   * @param {module:engine/view/document~ChangeType} type Type of the change.\n   * @param {module:engine/view/node~Node} node Changed node.\n   * @fires change\n   */\n\n\t}, {\n\t\tkey: '_fireChange',\n\t\tvalue: function _fireChange(type, node) {\n\t\t\tthis.fire('change:' + type, node);\n\n\t\t\tif (this.parent) {\n\t\t\t\tthis.parent._fireChange(type, node);\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Clones this node.\n   *\n   * @method #clone\n   * @returns {module:engine/view/node~Node} Clone of this node.\n   */\n\n\t\t/**\n   * Checks if provided node is similar to this node.\n   *\n   * @method #isSimilar\n   * @returns {Boolean} True if nodes are similar.\n   */\n\n\t\t/**\n   * Checks whether given view tree object is of given type.\n   *\n   * This method is useful when processing view tree objects that are of unknown type. For example, a function\n   * may return {@link module:engine/view/documentfragment~DocumentFragment} or {@link module:engine/view/node~Node}\n   * that can be either text node or element. This method can be used to check what kind of object is returned.\n   *\n   *\t\tobj.is( 'node' ); // true for any node, false for document fragment\n   *\t\tobj.is( 'documentFragment' ); // true for document fragment, false for any node\n   *\t\tobj.is( 'element' ); // true for any element, false for text node or document fragment\n   *\t\tobj.is( 'element', 'p' ); // true only for element which name is 'p'\n   *\t\tobj.is( 'p' ); // shortcut for obj.is( 'element', 'p' )\n   *\t\tobj.is( 'text' ); // true for text node, false for element and document fragment\n   *\n   * @method #is\n   * @param {'element'|'containerElement'|'attributeElement'|'emptyElement'|'uiElement'|\n   * 'rootElement'|'documentFragment'|'text'|'textProxy'} type\n   * @returns {Boolean}\n   */\n\n\t}, {\n\t\tkey: 'index',\n\t\tget: function get() {\n\t\t\tvar pos = void 0;\n\n\t\t\tif (!this.parent) {\n\t\t\t\treturn null;\n\t\t\t}\n\n\t\t\t// No parent or child doesn't exist in parent's children.\n\t\t\tif ((pos = this.parent.getChildIndex(this)) == -1) {\n\t\t\t\t/**\n     * The node's parent does not contain this node. It means that the document tree is corrupted.\n     *\n     * @error view-node-not-found-in-parent\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('view-node-not-found-in-parent: The node\\'s parent does not contain this node.');\n\t\t\t}\n\n\t\t\treturn pos;\n\t\t}\n\n\t\t/**\n   * Node's next sibling, or `null` if it is the last child.\n   *\n   * @readonly\n   * @type {module:engine/view/node~Node|null}\n   */\n\n\t}, {\n\t\tkey: 'nextSibling',\n\t\tget: function get() {\n\t\t\tvar index = this.index;\n\n\t\t\treturn index !== null && this.parent.getChild(index + 1) || null;\n\t\t}\n\n\t\t/**\n   * Node's previous sibling, or `null` if it is the first child.\n   *\n   * @readonly\n   * @type {module:engine/view/node~Node|null}\n   */\n\n\t}, {\n\t\tkey: 'previousSibling',\n\t\tget: function get() {\n\t\t\tvar index = this.index;\n\n\t\t\treturn index !== null && this.parent.getChild(index - 1) || null;\n\t\t}\n\n\t\t/**\n   * Top-most ancestor of the node. If the node has no parent it is the root itself.\n   *\n   * @readonly\n   * @type {module:engine/view/node~Node|module:engine/view/documentfragment~DocumentFragment}\n   */\n\n\t}, {\n\t\tkey: 'root',\n\t\tget: function get() {\n\t\t\tvar root = this;\n\n\t\t\twhile (root.parent) {\n\t\t\t\troot = root.parent;\n\t\t\t}\n\n\t\t\treturn root;\n\t\t}\n\n\t\t/**\n   * {@link module:engine/view/document~Document View document} that owns this node, or `null` if the node is inside\n   * {@link module:engine/view/documentfragment~DocumentFragment document fragment}.\n   *\n   * @readonly\n   * @type {module:engine/view/document~Document|null}\n   */\n\n\t}, {\n\t\tkey: 'document',\n\t\tget: function get() {\n\t\t\t// Parent might be Node, null or DocumentFragment.\n\t\t\tif (this.parent instanceof Node) {\n\t\t\t\treturn this.parent.document;\n\t\t\t} else {\n\t\t\t\treturn null;\n\t\t\t}\n\t\t}\n\t}]);\n\n\treturn Node;\n}();\n\n/**\n * Fired when list of {@link module:engine/view/element~Element elements} children changes.\n *\n * Change event is bubbled – it is fired on all ancestors.\n *\n * @event change:children\n * @param {module:engine/view/node~Node} Changed node.\n */\n\n/**\n * Fired when list of {@link module:engine/view/element~Element elements} attributes changes.\n *\n * Change event is bubbled – it is fired on all ancestors.\n *\n * @event change:attributes\n * @param {module:engine/view/node~Node} Changed node.\n */\n\n/**\n * Fired when {@link module:engine/view/text~Text text nodes} data changes.\n *\n * Change event is bubbled – it is fired on all ancestors.\n *\n * @event change:text\n * @param {module:engine/view/node~Node} Changed node.\n */\n\n/**\n * @event change\n */\n\nexports.default = Node;\n(0, _mix2.default)(Node, _emittermixin2.default);\n\n/***/ }),\n/* 75 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module engine/view/selection\n */\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nvar _range = __webpack_require__(33);\n\nvar _range2 = _interopRequireDefault(_range);\n\nvar _position = __webpack_require__(24);\n\nvar _position2 = _interopRequireDefault(_position);\n\nvar _mix = __webpack_require__(4);\n\nvar _mix2 = _interopRequireDefault(_mix);\n\nvar _emittermixin = __webpack_require__(8);\n\nvar _emittermixin2 = _interopRequireDefault(_emittermixin);\n\nvar _element = __webpack_require__(20);\n\nvar _element2 = _interopRequireDefault(_element);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * Class representing selection in tree view.\n *\n * Selection can consist of {@link module:engine/view/range~Range ranges} that can be added using\n * {@link module:engine/view/selection~Selection#addRange addRange}\n * and {@link module:engine/view/selection~Selection#setRanges setRanges} methods.\n * Both methods create copies of provided ranges and store those copies internally. Further modifications to passed\n * ranges will not change selection's state.\n * Selection's ranges can be obtained via {@link module:engine/view/selection~Selection#getRanges getRanges},\n * {@link module:engine/view/selection~Selection#getFirstRange getFirstRange}\n * and {@link module:engine/view/selection~Selection#getLastRange getLastRange}\n * methods, which return copies of ranges stored inside selection. Modifications made on these copies will not change\n * selection's state. Similar situation occurs when getting {@link module:engine/view/selection~Selection#anchor anchor},\n * {@link module:engine/view/selection~Selection#focus focus}, {@link module:engine/view/selection~Selection#getFirstPosition first} and\n * {@link module:engine/view/selection~Selection#getLastPosition last} positions - all will return copies of requested positions.\n */\nvar Selection = function () {\n\t/**\n  * Creates new selection instance.\n  */\n\tfunction Selection() {\n\t\t_classCallCheck(this, Selection);\n\n\t\t/**\n   * Stores all ranges that are selected.\n   *\n   * @protected\n   * @member {Array.<module:engine/view/range~Range>}\n   */\n\t\tthis._ranges = [];\n\n\t\t/**\n   * Specifies whether the last added range was added as a backward or forward range.\n   *\n   * @protected\n   * @member {Boolean}\n   */\n\t\tthis._lastRangeBackward = false;\n\n\t\t/**\n   * Specifies whether selection instance is fake.\n   *\n   * @private\n   * @member {Boolean}\n   */\n\t\tthis._isFake = false;\n\n\t\t/**\n   * Fake selection's label.\n   *\n   * @private\n   * @member {String}\n   */\n\t\tthis._fakeSelectionLabel = '';\n\t}\n\n\t/**\n  * Sets this selection instance to be marked as `fake`. A fake selection does not render as browser native selection\n  * over selected elements and is hidden to the user. This way, no native selection UI artifacts are displayed to\n  * the user and selection over elements can be represented in other way, for example by applying proper CSS class.\n  *\n  * Additionally fake's selection label can be provided. It will be used to describe fake selection in DOM (and be\n  * properly handled by screen readers).\n  *\n  * @fires change\n  * @param {Boolean} [value=true] If set to true selection will be marked as `fake`.\n  * @param {Object} [options] Additional options.\n  * @param {String} [options.label=''] Fake selection label.\n  */\n\n\n\t_createClass(Selection, [{\n\t\tkey: 'setFake',\n\t\tvalue: function setFake() {\n\t\t\tvar value = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : true;\n\t\t\tvar options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n\n\t\t\tthis._isFake = value;\n\t\t\tthis._fakeSelectionLabel = value ? options.label || '' : '';\n\n\t\t\tthis.fire('change');\n\t\t}\n\n\t\t/**\n   * Returns true if selection instance is marked as `fake`.\n   *\n   * @see #setFake\n   * @returns {Boolean}\n   */\n\n\t}, {\n\t\tkey: 'addRange',\n\n\n\t\t/**\n   * Adds a range to the selection. Added range is copied. This means that passed range is not saved in the\n   * selection instance and you can safely operate on it.\n   *\n   * Accepts a flag describing in which way the selection is made - passed range might be selected from\n   * {@link module:engine/view/range~Range#start start} to {@link module:engine/view/range~Range#end end}\n   * or from {@link module:engine/view/range~Range#end end} to {@link module:engine/view/range~Range#start start}.\n   * The flag is used to set {@link #anchor anchor} and {@link #focus focus} properties.\n   *\n   * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-selection-range-intersects` if added range intersects\n   * with ranges already stored in Selection instance.\n   *\n   * @fires change\n   * @param {module:engine/view/range~Range} range\n   */\n\t\tvalue: function addRange(range, isBackward) {\n\t\t\tif (!(range instanceof _range2.default)) {\n\t\t\t\tthrow new _ckeditorerror2.default('view-selection-invalid-range: Invalid Range.');\n\t\t\t}\n\n\t\t\tthis._pushRange(range);\n\t\t\tthis._lastRangeBackward = !!isBackward;\n\t\t\tthis.fire('change');\n\t\t}\n\n\t\t/**\n   * Returns an iterator that contains copies of all ranges added to the selection.\n   *\n   * @returns {Iterator.<module:engine/view/range~Range>}\n   */\n\n\t}, {\n\t\tkey: 'getRanges',\n\t\tvalue: regeneratorRuntime.mark(function getRanges() {\n\t\t\tvar _iteratorNormalCompletion, _didIteratorError, _iteratorError, _iterator, _step, range;\n\n\t\t\treturn regeneratorRuntime.wrap(function getRanges$(_context) {\n\t\t\t\twhile (1) {\n\t\t\t\t\tswitch (_context.prev = _context.next) {\n\t\t\t\t\t\tcase 0:\n\t\t\t\t\t\t\t_iteratorNormalCompletion = true;\n\t\t\t\t\t\t\t_didIteratorError = false;\n\t\t\t\t\t\t\t_iteratorError = undefined;\n\t\t\t\t\t\t\t_context.prev = 3;\n\t\t\t\t\t\t\t_iterator = this._ranges[Symbol.iterator]();\n\n\t\t\t\t\t\tcase 5:\n\t\t\t\t\t\t\tif (_iteratorNormalCompletion = (_step = _iterator.next()).done) {\n\t\t\t\t\t\t\t\t_context.next = 12;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\trange = _step.value;\n\t\t\t\t\t\t\t_context.next = 9;\n\t\t\t\t\t\t\treturn _range2.default.createFromRange(range);\n\n\t\t\t\t\t\tcase 9:\n\t\t\t\t\t\t\t_iteratorNormalCompletion = true;\n\t\t\t\t\t\t\t_context.next = 5;\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase 12:\n\t\t\t\t\t\t\t_context.next = 18;\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase 14:\n\t\t\t\t\t\t\t_context.prev = 14;\n\t\t\t\t\t\t\t_context.t0 = _context['catch'](3);\n\t\t\t\t\t\t\t_didIteratorError = true;\n\t\t\t\t\t\t\t_iteratorError = _context.t0;\n\n\t\t\t\t\t\tcase 18:\n\t\t\t\t\t\t\t_context.prev = 18;\n\t\t\t\t\t\t\t_context.prev = 19;\n\n\t\t\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\tcase 21:\n\t\t\t\t\t\t\t_context.prev = 21;\n\n\t\t\t\t\t\t\tif (!_didIteratorError) {\n\t\t\t\t\t\t\t\t_context.next = 24;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\tthrow _iteratorError;\n\n\t\t\t\t\t\tcase 24:\n\t\t\t\t\t\t\treturn _context.finish(21);\n\n\t\t\t\t\t\tcase 25:\n\t\t\t\t\t\t\treturn _context.finish(18);\n\n\t\t\t\t\t\tcase 26:\n\t\t\t\t\t\tcase 'end':\n\t\t\t\t\t\t\treturn _context.stop();\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}, getRanges, this, [[3, 14, 18, 26], [19,, 21, 25]]);\n\t\t})\n\n\t\t/**\n   * Returns copy of the first range in the selection. First range is the one which\n   * {@link module:engine/view/range~Range#start start} position {@link module:engine/view/position~Position#isBefore is before} start\n   * position of all other ranges (not to confuse with the first range added to the selection).\n   * Returns `null` if no ranges are added to selection.\n   *\n   * @returns {module:engine/view/range~Range|null}\n   */\n\n\t}, {\n\t\tkey: 'getFirstRange',\n\t\tvalue: function getFirstRange() {\n\t\t\tvar first = null;\n\n\t\t\tvar _iteratorNormalCompletion2 = true;\n\t\t\tvar _didIteratorError2 = false;\n\t\t\tvar _iteratorError2 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator2 = this._ranges[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {\n\t\t\t\t\tvar range = _step2.value;\n\n\t\t\t\t\tif (!first || range.start.isBefore(first.start)) {\n\t\t\t\t\t\tfirst = range;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError2 = true;\n\t\t\t\t_iteratorError2 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion2 && _iterator2.return) {\n\t\t\t\t\t\t_iterator2.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError2) {\n\t\t\t\t\t\tthrow _iteratorError2;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn first ? _range2.default.createFromRange(first) : null;\n\t\t}\n\n\t\t/**\n   * Returns copy of the last range in the selection. Last range is the one which {@link module:engine/view/range~Range#end end}\n   * position {@link module:engine/view/position~Position#isAfter is after} end position of all other ranges (not to confuse\n   * with the last range added to the selection). Returns `null` if no ranges are added to selection.\n   *\n   * @returns {module:engine/view/range~Range|null}\n   */\n\n\t}, {\n\t\tkey: 'getLastRange',\n\t\tvalue: function getLastRange() {\n\t\t\tvar last = null;\n\n\t\t\tvar _iteratorNormalCompletion3 = true;\n\t\t\tvar _didIteratorError3 = false;\n\t\t\tvar _iteratorError3 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator3 = this._ranges[Symbol.iterator](), _step3; !(_iteratorNormalCompletion3 = (_step3 = _iterator3.next()).done); _iteratorNormalCompletion3 = true) {\n\t\t\t\t\tvar range = _step3.value;\n\n\t\t\t\t\tif (!last || range.end.isAfter(last.end)) {\n\t\t\t\t\t\tlast = range;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError3 = true;\n\t\t\t\t_iteratorError3 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion3 && _iterator3.return) {\n\t\t\t\t\t\t_iterator3.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError3) {\n\t\t\t\t\t\tthrow _iteratorError3;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn last ? _range2.default.createFromRange(last) : null;\n\t\t}\n\n\t\t/**\n   * Returns copy of the first position in the selection. First position is the position that\n   * {@link module:engine/view/position~Position#isBefore is before} any other position in the selection ranges.\n   * Returns `null` if no ranges are added to selection.\n   *\n   * @returns {module:engine/view/position~Position|null}\n   */\n\n\t}, {\n\t\tkey: 'getFirstPosition',\n\t\tvalue: function getFirstPosition() {\n\t\t\tvar firstRange = this.getFirstRange();\n\n\t\t\treturn firstRange ? _position2.default.createFromPosition(firstRange.start) : null;\n\t\t}\n\n\t\t/**\n   * Returns copy of the last position in the selection. Last position is the position that\n   * {@link module:engine/view/position~Position#isAfter is after} any other position in the selection ranges.\n   * Returns `null` if no ranges are added to selection.\n   *\n   * @returns {module:engine/view/position~Position|null}\n   */\n\n\t}, {\n\t\tkey: 'getLastPosition',\n\t\tvalue: function getLastPosition() {\n\t\t\tvar lastRange = this.getLastRange();\n\n\t\t\treturn lastRange ? _position2.default.createFromPosition(lastRange.end) : null;\n\t\t}\n\n\t\t/**\n   * Checks whether, this selection is equal to given selection. Selections are equal if they have same directions,\n   * same number of ranges and all ranges from one selection equal to a range from other selection.\n   *\n   * @param {module:engine/view/selection~Selection} otherSelection Selection to compare with.\n   * @returns {Boolean} `true` if selections are equal, `false` otherwise.\n   */\n\n\t}, {\n\t\tkey: 'isEqual',\n\t\tvalue: function isEqual(otherSelection) {\n\t\t\tif (this.isFake != otherSelection.isFake) {\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\tif (this.isFake && this.fakeSelectionLabel != otherSelection.fakeSelectionLabel) {\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\tif (this.rangeCount != otherSelection.rangeCount) {\n\t\t\t\treturn false;\n\t\t\t} else if (this.rangeCount === 0) {\n\t\t\t\treturn true;\n\t\t\t}\n\n\t\t\tif (!this.anchor.isEqual(otherSelection.anchor) || !this.focus.isEqual(otherSelection.focus)) {\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\tvar _iteratorNormalCompletion4 = true;\n\t\t\tvar _didIteratorError4 = false;\n\t\t\tvar _iteratorError4 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator4 = this._ranges[Symbol.iterator](), _step4; !(_iteratorNormalCompletion4 = (_step4 = _iterator4.next()).done); _iteratorNormalCompletion4 = true) {\n\t\t\t\t\tvar thisRange = _step4.value;\n\n\t\t\t\t\tvar found = false;\n\n\t\t\t\t\tvar _iteratorNormalCompletion5 = true;\n\t\t\t\t\tvar _didIteratorError5 = false;\n\t\t\t\t\tvar _iteratorError5 = undefined;\n\n\t\t\t\t\ttry {\n\t\t\t\t\t\tfor (var _iterator5 = otherSelection._ranges[Symbol.iterator](), _step5; !(_iteratorNormalCompletion5 = (_step5 = _iterator5.next()).done); _iteratorNormalCompletion5 = true) {\n\t\t\t\t\t\t\tvar otherRange = _step5.value;\n\n\t\t\t\t\t\t\tif (thisRange.isEqual(otherRange)) {\n\t\t\t\t\t\t\t\tfound = true;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t} catch (err) {\n\t\t\t\t\t\t_didIteratorError5 = true;\n\t\t\t\t\t\t_iteratorError5 = err;\n\t\t\t\t\t} finally {\n\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\tif (!_iteratorNormalCompletion5 && _iterator5.return) {\n\t\t\t\t\t\t\t\t_iterator5.return();\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} finally {\n\t\t\t\t\t\t\tif (_didIteratorError5) {\n\t\t\t\t\t\t\t\tthrow _iteratorError5;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t\tif (!found) {\n\t\t\t\t\t\treturn false;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError4 = true;\n\t\t\t\t_iteratorError4 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion4 && _iterator4.return) {\n\t\t\t\t\t\t_iterator4.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError4) {\n\t\t\t\t\t\tthrow _iteratorError4;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn true;\n\t\t}\n\n\t\t/**\n   * Removes all ranges that were added to the selection.\n   *\n   * @fires change\n   */\n\n\t}, {\n\t\tkey: 'removeAllRanges',\n\t\tvalue: function removeAllRanges() {\n\t\t\tif (this._ranges.length) {\n\t\t\t\tthis._ranges = [];\n\t\t\t\tthis.fire('change');\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Replaces all ranges that were added to the selection with given array of ranges. Last range of the array\n   * is treated like the last added range and is used to set {@link #anchor anchor} and {@link #focus focus}.\n   * Accepts a flag describing in which way the selection is made (see {@link #addRange addRange}).\n   *\n   * @fires change\n   * @param {Array.<module:engine/view/range~Range>} newRanges Array of ranges to set.\n   * @param {Boolean} [isLastBackward] Flag describing if last added range was selected forward - from start to end\n   * (`false`) or backward - from end to start (`true`). Defaults to `false`.\n   */\n\n\t}, {\n\t\tkey: 'setRanges',\n\t\tvalue: function setRanges(newRanges, isLastBackward) {\n\t\t\tthis._ranges = [];\n\n\t\t\tvar _iteratorNormalCompletion6 = true;\n\t\t\tvar _didIteratorError6 = false;\n\t\t\tvar _iteratorError6 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator6 = newRanges[Symbol.iterator](), _step6; !(_iteratorNormalCompletion6 = (_step6 = _iterator6.next()).done); _iteratorNormalCompletion6 = true) {\n\t\t\t\t\tvar range = _step6.value;\n\n\t\t\t\t\tif (!(range instanceof _range2.default)) {\n\t\t\t\t\t\tthrow new _ckeditorerror2.default('view-selection-invalid-range: Invalid Range.');\n\t\t\t\t\t}\n\n\t\t\t\t\tthis._pushRange(range);\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError6 = true;\n\t\t\t\t_iteratorError6 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion6 && _iterator6.return) {\n\t\t\t\t\t\t_iterator6.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError6) {\n\t\t\t\t\t\tthrow _iteratorError6;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tthis._lastRangeBackward = !!isLastBackward;\n\t\t\tthis.fire('change');\n\t\t}\n\n\t\t/**\n   * Sets this selection's ranges and direction to the ranges and direction of the given selection.\n   *\n   * @param {module:engine/view/selection~Selection} otherSelection\n   */\n\n\t}, {\n\t\tkey: 'setTo',\n\t\tvalue: function setTo(otherSelection) {\n\t\t\tthis._isFake = otherSelection._isFake;\n\t\t\tthis._fakeSelectionLabel = otherSelection._fakeSelectionLabel;\n\n\t\t\tthis.setRanges(otherSelection.getRanges(), otherSelection.isBackward);\n\t\t}\n\n\t\t/**\n   * Sets collapsed selection in the specified location.\n   *\n   * The location can be specified in the same form as {@link module:engine/view/position~Position.createAt} parameters.\n   *\n   * @fires change\n   * @param {module:engine/view/item~Item|module:engine/view/position~Position} itemOrPosition\n   * @param {Number|'end'|'before'|'after'} [offset=0] Offset or one of the flags. Used only when\n   * first parameter is a {@link module:engine/view/item~Item view item}.\n   */\n\n\t}, {\n\t\tkey: 'collapse',\n\t\tvalue: function collapse(itemOrPosition, offset) {\n\t\t\tvar pos = _position2.default.createAt(itemOrPosition, offset);\n\t\t\tvar range = new _range2.default(pos, pos);\n\n\t\t\tthis.setRanges([range]);\n\t\t}\n\n\t\t/**\n   * Collapses selection to the selection's {@link #getFirstPosition first position}.\n   * All ranges, besides the collapsed one, will be removed. Nothing will change if there are no ranges stored\n   * inside selection.\n   *\n   * @fires change\n   */\n\n\t}, {\n\t\tkey: 'collapseToStart',\n\t\tvalue: function collapseToStart() {\n\t\t\tvar startPosition = this.getFirstPosition();\n\n\t\t\tif (startPosition !== null) {\n\t\t\t\tthis.setRanges([new _range2.default(startPosition, startPosition)]);\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Collapses selection to the selection's {@link #getLastPosition last position}.\n   * All ranges, besides the collapsed one, will be removed. Nothing will change if there are no ranges stored\n   * inside selection.\n   *\n   * @fires change\n   */\n\n\t}, {\n\t\tkey: 'collapseToEnd',\n\t\tvalue: function collapseToEnd() {\n\t\t\tvar endPosition = this.getLastPosition();\n\n\t\t\tif (endPosition !== null) {\n\t\t\t\tthis.setRanges([new _range2.default(endPosition, endPosition)]);\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Sets {@link #focus} to the specified location.\n   *\n   * The location can be specified in the same form as {@link module:engine/view/position~Position.createAt} parameters.\n   *\n   * @fires change:range\n   * @param {module:engine/view/item~Item|module:engine/view/position~Position} itemOrPosition\n   * @param {Number|'end'|'before'|'after'} [offset=0] Offset or one of the flags. Used only when\n   * first parameter is a {@link module:engine/view/item~Item view item}.\n   */\n\n\t}, {\n\t\tkey: 'setFocus',\n\t\tvalue: function setFocus(itemOrPosition, offset) {\n\t\t\tif (this.anchor === null) {\n\t\t\t\t/**\n     * Cannot set selection focus if there are no ranges in selection.\n     *\n     * @error view-selection-setFocus-no-ranges\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('view-selection-setFocus-no-ranges: Cannot set selection focus if there are no ranges in selection.');\n\t\t\t}\n\n\t\t\tvar newFocus = _position2.default.createAt(itemOrPosition, offset);\n\n\t\t\tif (newFocus.compareWith(this.focus) == 'same') {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tvar anchor = this.anchor;\n\n\t\t\tthis._ranges.pop();\n\n\t\t\tif (newFocus.compareWith(anchor) == 'before') {\n\t\t\t\tthis.addRange(new _range2.default(newFocus, anchor), true);\n\t\t\t} else {\n\t\t\t\tthis.addRange(new _range2.default(anchor, newFocus));\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Returns the selected element. {@link module:engine/view/element~Element Element} is considered as selected if there is only\n   * one range in the selection, and that range contains exactly one element.\n   * Returns `null` if there is no selected element.\n   *\n   * @returns {module:engine/view/element~Element|null}\n   */\n\n\t}, {\n\t\tkey: 'getSelectedElement',\n\t\tvalue: function getSelectedElement() {\n\t\t\tif (this.rangeCount !== 1) {\n\t\t\t\treturn null;\n\t\t\t}\n\n\t\t\tvar range = this.getFirstRange();\n\t\t\tvar nodeAfterStart = range.start.nodeAfter;\n\t\t\tvar nodeBeforeEnd = range.end.nodeBefore;\n\n\t\t\treturn nodeAfterStart instanceof _element2.default && nodeAfterStart == nodeBeforeEnd ? nodeAfterStart : null;\n\t\t}\n\n\t\t/**\n   * Creates and returns an instance of `Selection` that is a clone of given selection, meaning that it has same\n   * ranges and same direction as this selection.\n   *\n   * @params {module:engine/view/selection~Selection} otherSelection Selection to be cloned.\n   * @returns {module:engine/view/selection~Selection} `Selection` instance that is a clone of given selection.\n   */\n\n\t}, {\n\t\tkey: '_pushRange',\n\n\n\t\t/**\n   * Adds range to selection - creates copy of given range so it can be safely used and modified.\n   *\n   * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-selection-range-intersects` if added range intersects\n   * with ranges already stored in selection instance.\n   *\n   * @private\n   * @param {module:engine/view/range~Range} range\n   */\n\t\tvalue: function _pushRange(range) {\n\t\t\tvar _iteratorNormalCompletion7 = true;\n\t\t\tvar _didIteratorError7 = false;\n\t\t\tvar _iteratorError7 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator7 = this._ranges[Symbol.iterator](), _step7; !(_iteratorNormalCompletion7 = (_step7 = _iterator7.next()).done); _iteratorNormalCompletion7 = true) {\n\t\t\t\t\tvar storedRange = _step7.value;\n\n\t\t\t\t\tif (range.isIntersecting(storedRange)) {\n\t\t\t\t\t\t/**\n       * Trying to add a range that intersects with another range from selection.\n       *\n       * @error selection-range-intersects\n       * @param {module:engine/view/range~Range} addedRange Range that was added to the selection.\n       * @param {module:engine/view/range~Range} intersectingRange Range from selection that intersects with `addedRange`.\n       */\n\t\t\t\t\t\tthrow new _ckeditorerror2.default('view-selection-range-intersects: Trying to add a range that intersects with another range from selection.', { addedRange: range, intersectingRange: storedRange });\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError7 = true;\n\t\t\t\t_iteratorError7 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion7 && _iterator7.return) {\n\t\t\t\t\t\t_iterator7.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError7) {\n\t\t\t\t\t\tthrow _iteratorError7;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tthis._ranges.push(_range2.default.createFromRange(range));\n\t\t}\n\t}, {\n\t\tkey: 'isFake',\n\t\tget: function get() {\n\t\t\treturn this._isFake;\n\t\t}\n\n\t\t/**\n   * Returns fake selection label.\n   *\n   * @see #setFake\n   * @returns {String}\n   */\n\n\t}, {\n\t\tkey: 'fakeSelectionLabel',\n\t\tget: function get() {\n\t\t\treturn this._fakeSelectionLabel;\n\t\t}\n\n\t\t/**\n   * Selection anchor. Anchor may be described as a position where the selection starts. Together with\n   * {@link #focus focus} they define the direction of selection, which is important\n   * when expanding/shrinking selection. Anchor is always the start or end of the most recent added range.\n   * It may be a bit unintuitive when there are multiple ranges in selection.\n   *\n   * @see #focus\n   * @type {module:engine/view/position~Position}\n   */\n\n\t}, {\n\t\tkey: 'anchor',\n\t\tget: function get() {\n\t\t\tif (!this._ranges.length) {\n\t\t\t\treturn null;\n\t\t\t}\n\t\t\tvar range = this._ranges[this._ranges.length - 1];\n\t\t\tvar anchor = this._lastRangeBackward ? range.end : range.start;\n\n\t\t\treturn _position2.default.createFromPosition(anchor);\n\t\t}\n\n\t\t/**\n   * Selection focus. Focus is a position where the selection ends.\n   *\n   * @see #anchor\n   * @type {module:engine/view/position~Position}\n   */\n\n\t}, {\n\t\tkey: 'focus',\n\t\tget: function get() {\n\t\t\tif (!this._ranges.length) {\n\t\t\t\treturn null;\n\t\t\t}\n\t\t\tvar range = this._ranges[this._ranges.length - 1];\n\t\t\tvar focus = this._lastRangeBackward ? range.start : range.end;\n\n\t\t\treturn _position2.default.createFromPosition(focus);\n\t\t}\n\n\t\t/**\n   * Returns whether the selection is collapsed. Selection is collapsed when there is exactly one range which is\n   * collapsed.\n   *\n   * @type {Boolean}\n   */\n\n\t}, {\n\t\tkey: 'isCollapsed',\n\t\tget: function get() {\n\t\t\treturn this.rangeCount === 1 && this._ranges[0].isCollapsed;\n\t\t}\n\n\t\t/**\n   * Returns number of ranges in selection.\n   *\n   * @type {Number}\n      */\n\n\t}, {\n\t\tkey: 'rangeCount',\n\t\tget: function get() {\n\t\t\treturn this._ranges.length;\n\t\t}\n\n\t\t/**\n   * Specifies whether the {@link #focus} precedes {@link #anchor}.\n   *\n   * @type {Boolean}\n   */\n\n\t}, {\n\t\tkey: 'isBackward',\n\t\tget: function get() {\n\t\t\treturn !this.isCollapsed && this._lastRangeBackward;\n\t\t}\n\n\t\t/**\n   * {@link module:engine/view/editableelement~EditableElement EditableElement} instance that contains this selection, or `null`\n   * if the selection is not inside an editable element.\n   *\n   * @type {module:engine/view/editableelement~EditableElement|null}\n   */\n\n\t}, {\n\t\tkey: 'editableElement',\n\t\tget: function get() {\n\t\t\tif (this.anchor) {\n\t\t\t\treturn this.anchor.editableElement;\n\t\t\t}\n\n\t\t\treturn null;\n\t\t}\n\t}], [{\n\t\tkey: 'createFromSelection',\n\t\tvalue: function createFromSelection(otherSelection) {\n\t\t\tvar selection = new Selection();\n\t\t\tselection.setTo(otherSelection);\n\n\t\t\treturn selection;\n\t\t}\n\t}]);\n\n\treturn Selection;\n}();\n\nexports.default = Selection;\n\n\n(0, _mix2.default)(Selection, _emittermixin2.default);\n\n/**\n * Fired whenever selection ranges are changed through {@link ~Selection Selection API}.\n *\n * @event change\n */\n\n/**\n * @event change:range\n */\n\n/***/ }),\n/* 76 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module engine/view/treewalker\n */\n\nvar _element = __webpack_require__(20);\n\nvar _element2 = _interopRequireDefault(_element);\n\nvar _text = __webpack_require__(29);\n\nvar _text2 = _interopRequireDefault(_text);\n\nvar _textproxy = __webpack_require__(328);\n\nvar _textproxy2 = _interopRequireDefault(_textproxy);\n\nvar _position = __webpack_require__(24);\n\nvar _position2 = _interopRequireDefault(_position);\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * Position iterator class. It allows to iterate forward and backward over the document.\n */\nvar TreeWalker = function () {\n\t/**\n  * Creates a range iterator. All parameters are optional, but you have to specify either `boundaries` or `startPosition`.\n  *\n  * @constructor\n  * @param {Object} options Object with configuration.\n  * @param {module:engine/view/range~Range} [options.boundaries=null] Range to define boundaries of the iterator.\n  * @param {module:engine/view/position~Position} [options.startPosition] Starting position.\n  * @param {'forward'|'backward'} [options.direction='forward'] Walking direction.\n  * @param {Boolean} [options.singleCharacters=false] Flag indicating whether all characters from\n  * {@link module:engine/view/text~Text} should be returned as one {@link module:engine/view/text~Text} (`false`) ore one by one as\n  * {@link module:engine/view/textproxy~TextProxy} (`true`).\n  * @param {Boolean} [options.shallow=false] Flag indicating whether iterator should enter elements or not. If the\n  * iterator is shallow child nodes of any iterated node will not be returned along with `elementEnd` tag.\n  * @param {Boolean} [options.ignoreElementEnd=false] Flag indicating whether iterator should ignore `elementEnd`\n  * tags. If the option is true walker will not return a parent node of start position. If this option is `true`\n  * each {@link module:engine/view/element~Element} will be returned once, while if the option is `false` they might be returned\n  * twice: for `'elementStart'` and `'elementEnd'`.\n  */\n\tfunction TreeWalker() {\n\t\tvar options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n\n\t\t_classCallCheck(this, TreeWalker);\n\n\t\tif (!options.boundaries && !options.startPosition) {\n\t\t\t/**\n    * Neither boundaries nor starting position have been defined.\n    *\n    * @error tree-walker-no-start-position\n    */\n\t\t\tthrow new _ckeditorerror2.default('view-tree-walker-no-start-position: Neither boundaries nor starting position have been defined.');\n\t\t}\n\n\t\tif (options.direction && options.direction != 'forward' && options.direction != 'backward') {\n\t\t\tthrow new _ckeditorerror2.default('view-tree-walker-unknown-direction: Only `backward` and `forward` direction allowed.', { direction: options.direction });\n\t\t}\n\n\t\t/**\n   * Iterator boundaries.\n   *\n   * When the iterator is walking `'forward'` on the end of boundary or is walking `'backward'`\n   * on the start of boundary, then `{ done: true }` is returned.\n   *\n   * If boundaries are not defined they are set before first and after last child of the root node.\n   *\n   * @readonly\n   * @member {module:engine/view/range~Range} module:engine/view/treewalker~TreeWalker#boundaries\n   */\n\t\tthis.boundaries = options.boundaries || null;\n\n\t\t/**\n   * Iterator position. If start position is not defined then position depends on {@link #direction}. If direction is\n   * `'forward'` position starts form the beginning, when direction is `'backward'` position starts from the end.\n   *\n   * @readonly\n   * @member {module:engine/view/position~Position} module:engine/view/treewalker~TreeWalker#position\n   */\n\t\tif (options.startPosition) {\n\t\t\tthis.position = _position2.default.createFromPosition(options.startPosition);\n\t\t} else {\n\t\t\tthis.position = _position2.default.createFromPosition(options.boundaries[options.direction == 'backward' ? 'end' : 'start']);\n\t\t}\n\n\t\t/**\n   * Walking direction. Defaults `'forward'`.\n   *\n   * @readonly\n   * @member {'backward'|'forward'} module:engine/view/treewalker~TreeWalker#direction\n   */\n\t\tthis.direction = options.direction || 'forward';\n\n\t\t/**\n   * Flag indicating whether all characters from {@link module:engine/view/text~Text} should be returned as one\n   * {@link module:engine/view/text~Text} or one by one as {@link module:engine/view/textproxy~TextProxy}.\n   *\n   * @readonly\n   * @member {Boolean} module:engine/view/treewalker~TreeWalker#singleCharacters\n   */\n\t\tthis.singleCharacters = !!options.singleCharacters;\n\n\t\t/**\n   * Flag indicating whether iterator should enter elements or not. If the iterator is shallow child nodes of any\n   * iterated node will not be returned along with `elementEnd` tag.\n   *\n   * @readonly\n   * @member {Boolean} module:engine/view/treewalker~TreeWalker#shallow\n   */\n\t\tthis.shallow = !!options.shallow;\n\n\t\t/**\n   * Flag indicating whether iterator should ignore `elementEnd` tags. If set to `true`, walker will not\n   * return a parent node of the start position. Each {@link module:engine/view/element~Element} will be returned once.\n   * When set to `false` each element might be returned twice: for `'elementStart'` and `'elementEnd'`.\n   *\n   * @readonly\n   * @member {Boolean} module:engine/view/treewalker~TreeWalker#ignoreElementEnd\n   */\n\t\tthis.ignoreElementEnd = !!options.ignoreElementEnd;\n\n\t\t/**\n   * Start boundary parent.\n   *\n   * @private\n   * @member {module:engine/view/node~Node} module:engine/view/treewalker~TreeWalker#_boundaryStartParent\n   */\n\t\tthis._boundaryStartParent = this.boundaries ? this.boundaries.start.parent : null;\n\n\t\t/**\n   * End boundary parent.\n   *\n   * @private\n   * @member {module:engine/view/node~Node} module:engine/view/treewalker~TreeWalker#_boundaryEndParent\n   */\n\t\tthis._boundaryEndParent = this.boundaries ? this.boundaries.end.parent : null;\n\t}\n\n\t/**\n  * Iterator interface.\n  */\n\n\n\t_createClass(TreeWalker, [{\n\t\tkey: Symbol.iterator,\n\t\tvalue: function value() {\n\t\t\treturn this;\n\t\t}\n\n\t\t/**\n   * Moves {@link #position} in the {@link #direction} skipping values as long as the callback function returns `true`.\n   *\n   * For example:\n   *\n   * \t\twalker.skip( value => value.type == 'text' ); // <p>{}foo</p> -> <p>foo[]</p>\n   * \t\twalker.skip( value => true ); // Move the position to the end: <p>{}foo</p> -> <p>foo</p>[]\n   * \t\twalker.skip( value => false ); // Do not move the position.\n   *\n   * @param {Function} skip Callback function. Gets {@link module:engine/view/treewalker~TreeWalkerValue} and should\n   * return `true` if the value should be skipped or `false` if not.\n   */\n\n\t}, {\n\t\tkey: 'skip',\n\t\tvalue: function skip(_skip) {\n\t\t\tvar done = void 0,\n\t\t\t    value = void 0,\n\t\t\t    prevPosition = void 0;\n\n\t\t\tdo {\n\t\t\t\tprevPosition = this.position;\n\n\t\t\t\tvar _next2 = this.next();\n\n\t\t\t\tdone = _next2.done;\n\t\t\t\tvalue = _next2.value;\n\t\t\t} while (!done && _skip(value));\n\n\t\t\tif (!done) {\n\t\t\t\tthis.position = prevPosition;\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Iterator interface method.\n   * Detects walking direction and makes step forward or backward.\n   *\n   * @returns {Object} Object implementing iterator interface, returning information about taken step.\n   */\n\n\t}, {\n\t\tkey: 'next',\n\t\tvalue: function next() {\n\t\t\tif (this.direction == 'forward') {\n\t\t\t\treturn this._next();\n\t\t\t} else {\n\t\t\t\treturn this._previous();\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Makes a step forward in view. Moves the {@link #position} to the next position and returns the encountered value.\n   *\n   * @private\n   * @returns {Object}\n   * @returns {Boolean} return.done `true` if iterator is done, `false` otherwise.\n   * @returns {module:engine/view/treewalker~TreeWalkerValue} return.value Information about taken step.\n   */\n\n\t}, {\n\t\tkey: '_next',\n\t\tvalue: function _next() {\n\t\t\tvar position = _position2.default.createFromPosition(this.position);\n\t\t\tvar previousPosition = this.position;\n\t\t\tvar parent = position.parent;\n\n\t\t\t// We are at the end of the root.\n\t\t\tif (parent.parent === null && position.offset === parent.childCount) {\n\t\t\t\treturn { done: true };\n\t\t\t}\n\n\t\t\t// We reached the walker boundary.\n\t\t\tif (parent === this._boundaryEndParent && position.offset == this.boundaries.end.offset) {\n\t\t\t\treturn { done: true };\n\t\t\t}\n\n\t\t\t// Get node just after current position.\n\t\t\tvar node = void 0;\n\n\t\t\t// Text is a specific parent because it contains string instead of child nodes.\n\t\t\tif (parent instanceof _text2.default) {\n\t\t\t\tif (position.isAtEnd) {\n\t\t\t\t\t// Prevent returning \"elementEnd\" for Text node. Skip that value and return the next walker step.\n\t\t\t\t\tthis.position = _position2.default.createAfter(parent);\n\n\t\t\t\t\treturn this._next();\n\t\t\t\t}\n\n\t\t\t\tnode = parent.data[position.offset];\n\t\t\t} else {\n\t\t\t\tnode = parent.getChild(position.offset);\n\t\t\t}\n\n\t\t\tif (node instanceof _element2.default) {\n\t\t\t\tif (!this.shallow) {\n\t\t\t\t\tposition = new _position2.default(node, 0);\n\t\t\t\t} else {\n\t\t\t\t\tposition.offset++;\n\t\t\t\t}\n\n\t\t\t\tthis.position = position;\n\n\t\t\t\treturn this._formatReturnValue('elementStart', node, previousPosition, position, 1);\n\t\t\t} else if (node instanceof _text2.default) {\n\t\t\t\tif (this.singleCharacters) {\n\t\t\t\t\tposition = new _position2.default(node, 0);\n\t\t\t\t\tthis.position = position;\n\n\t\t\t\t\treturn this._next();\n\t\t\t\t} else {\n\t\t\t\t\tvar charactersCount = node.data.length;\n\t\t\t\t\tvar item = node;\n\n\t\t\t\t\t// If text stick out of walker range, we need to cut it and wrap by TextProxy.\n\t\t\t\t\tif (node == this._boundaryEndParent) {\n\t\t\t\t\t\tcharactersCount = this.boundaries.end.offset;\n\t\t\t\t\t\titem = new _textproxy2.default(node, 0, charactersCount);\n\t\t\t\t\t\tposition = _position2.default.createAfter(item);\n\t\t\t\t\t} else {\n\t\t\t\t\t\t// If not just keep moving forward.\n\t\t\t\t\t\tposition.offset++;\n\t\t\t\t\t}\n\n\t\t\t\t\tthis.position = position;\n\n\t\t\t\t\treturn this._formatReturnValue('text', item, previousPosition, position, charactersCount);\n\t\t\t\t}\n\t\t\t} else if (typeof node == 'string') {\n\t\t\t\tvar textLength = void 0;\n\n\t\t\t\tif (this.singleCharacters) {\n\t\t\t\t\ttextLength = 1;\n\t\t\t\t} else {\n\t\t\t\t\t// Check if text stick out of walker range.\n\t\t\t\t\tvar endOffset = parent === this._boundaryEndParent ? this.boundaries.end.offset : parent.data.length;\n\n\t\t\t\t\ttextLength = endOffset - position.offset;\n\t\t\t\t}\n\n\t\t\t\tvar textProxy = new _textproxy2.default(parent, position.offset, textLength);\n\n\t\t\t\tposition.offset += textLength;\n\t\t\t\tthis.position = position;\n\n\t\t\t\treturn this._formatReturnValue('text', textProxy, previousPosition, position, textLength);\n\t\t\t} else {\n\t\t\t\t// `node` is not set, we reached the end of current `parent`.\n\t\t\t\tposition = _position2.default.createAfter(parent);\n\t\t\t\tthis.position = position;\n\n\t\t\t\tif (this.ignoreElementEnd) {\n\t\t\t\t\treturn this._next();\n\t\t\t\t} else {\n\t\t\t\t\treturn this._formatReturnValue('elementEnd', parent, previousPosition, position);\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Makes a step backward in view. Moves the {@link #position} to the previous position and returns the encountered value.\n   *\n   * @private\n   * @returns {Object}\n   * @returns {Boolean} return.done True if iterator is done.\n   * @returns {module:engine/view/treewalker~TreeWalkerValue} return.value Information about taken step.\n   */\n\n\t}, {\n\t\tkey: '_previous',\n\t\tvalue: function _previous() {\n\t\t\tvar position = _position2.default.createFromPosition(this.position);\n\t\t\tvar previousPosition = this.position;\n\t\t\tvar parent = position.parent;\n\n\t\t\t// We are at the beginning of the root.\n\t\t\tif (parent.parent === null && position.offset === 0) {\n\t\t\t\treturn { done: true };\n\t\t\t}\n\n\t\t\t// We reached the walker boundary.\n\t\t\tif (parent == this._boundaryStartParent && position.offset == this.boundaries.start.offset) {\n\t\t\t\treturn { done: true };\n\t\t\t}\n\n\t\t\t// Get node just before current position.\n\t\t\tvar node = void 0;\n\n\t\t\t// Text {@link module:engine/view/text~Text} element is a specific parent because contains string instead of child nodes.\n\t\t\tif (parent instanceof _text2.default) {\n\t\t\t\tif (position.isAtStart) {\n\t\t\t\t\t// Prevent returning \"elementStart\" for Text node. Skip that value and return the next walker step.\n\t\t\t\t\tthis.position = _position2.default.createBefore(parent);\n\n\t\t\t\t\treturn this._previous();\n\t\t\t\t}\n\n\t\t\t\tnode = parent.data[position.offset - 1];\n\t\t\t} else {\n\t\t\t\tnode = parent.getChild(position.offset - 1);\n\t\t\t}\n\n\t\t\tif (node instanceof _element2.default) {\n\t\t\t\tif (!this.shallow) {\n\t\t\t\t\tposition = new _position2.default(node, node.childCount);\n\t\t\t\t\tthis.position = position;\n\n\t\t\t\t\tif (this.ignoreElementEnd) {\n\t\t\t\t\t\treturn this._previous();\n\t\t\t\t\t} else {\n\t\t\t\t\t\treturn this._formatReturnValue('elementEnd', node, previousPosition, position);\n\t\t\t\t\t}\n\t\t\t\t} else {\n\t\t\t\t\tposition.offset--;\n\t\t\t\t\tthis.position = position;\n\n\t\t\t\t\treturn this._formatReturnValue('elementStart', node, previousPosition, position, 1);\n\t\t\t\t}\n\t\t\t} else if (node instanceof _text2.default) {\n\t\t\t\tif (this.singleCharacters) {\n\t\t\t\t\tposition = new _position2.default(node, node.data.length);\n\t\t\t\t\tthis.position = position;\n\n\t\t\t\t\treturn this._previous();\n\t\t\t\t} else {\n\t\t\t\t\tvar charactersCount = node.data.length;\n\t\t\t\t\tvar item = node;\n\n\t\t\t\t\t// If text stick out of walker range, we need to cut it and wrap by TextProxy.\n\t\t\t\t\tif (node == this._boundaryStartParent) {\n\t\t\t\t\t\tvar offset = this.boundaries.start.offset;\n\n\t\t\t\t\t\titem = new _textproxy2.default(node, offset, node.data.length - offset);\n\t\t\t\t\t\tcharactersCount = item.data.length;\n\t\t\t\t\t\tposition = _position2.default.createBefore(item);\n\t\t\t\t\t} else {\n\t\t\t\t\t\t// If not just keep moving backward.\n\t\t\t\t\t\tposition.offset--;\n\t\t\t\t\t}\n\n\t\t\t\t\tthis.position = position;\n\n\t\t\t\t\treturn this._formatReturnValue('text', item, previousPosition, position, charactersCount);\n\t\t\t\t}\n\t\t\t} else if (typeof node == 'string') {\n\t\t\t\tvar textLength = void 0;\n\n\t\t\t\tif (!this.singleCharacters) {\n\t\t\t\t\t// Check if text stick out of walker range.\n\t\t\t\t\tvar startOffset = parent === this._boundaryStartParent ? this.boundaries.start.offset : 0;\n\n\t\t\t\t\ttextLength = position.offset - startOffset;\n\t\t\t\t} else {\n\t\t\t\t\ttextLength = 1;\n\t\t\t\t}\n\n\t\t\t\tposition.offset -= textLength;\n\n\t\t\t\tvar textProxy = new _textproxy2.default(parent, position.offset, textLength);\n\n\t\t\t\tthis.position = position;\n\n\t\t\t\treturn this._formatReturnValue('text', textProxy, previousPosition, position, textLength);\n\t\t\t} else {\n\t\t\t\t// `node` is not set, we reached the beginning of current `parent`.\n\t\t\t\tposition = _position2.default.createBefore(parent);\n\t\t\t\tthis.position = position;\n\n\t\t\t\treturn this._formatReturnValue('elementStart', parent, previousPosition, position, 1);\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Format returned data and adjust `previousPosition` and `nextPosition` if reach the bound of the {@link module:engine/view/text~Text}.\n   *\n   * @private\n   * @param {module:engine/view/treewalker~TreeWalkerValueType} type Type of step.\n   * @param {module:engine/view/item~Item} item Item between old and new position.\n   * @param {module:engine/view/position~Position} previousPosition Previous position of iterator.\n   * @param {module:engine/view/position~Position} nextPosition Next position of iterator.\n   * @param {Number} [length] Length of the item.\n   * @returns {module:engine/view/treewalker~TreeWalkerValue}\n   */\n\n\t}, {\n\t\tkey: '_formatReturnValue',\n\t\tvalue: function _formatReturnValue(type, item, previousPosition, nextPosition, length) {\n\t\t\t// Text is a specific parent, because contains string instead of children.\n\t\t\t// Walker doesn't enter to the Text except situations when walker is iterating over every single character,\n\t\t\t// or the bound starts/ends inside the Text. So when the position is at the beginning or at the end of the Text\n\t\t\t// we move it just before or just after Text.\n\t\t\tif (item instanceof _textproxy2.default) {\n\t\t\t\t// Position is at the end of Text.\n\t\t\t\tif (item.offsetInText + item.data.length == item.textNode.data.length) {\n\t\t\t\t\tif (this.direction == 'forward' && !(this.boundaries && this.boundaries.end.isEqual(this.position))) {\n\t\t\t\t\t\tnextPosition = _position2.default.createAfter(item.textNode);\n\t\t\t\t\t\t// When we change nextPosition of returned value we need also update walker current position.\n\t\t\t\t\t\tthis.position = nextPosition;\n\t\t\t\t\t} else {\n\t\t\t\t\t\tpreviousPosition = _position2.default.createAfter(item.textNode);\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\t// Position is at the begining ot the text.\n\t\t\t\tif (item.offsetInText === 0) {\n\t\t\t\t\tif (this.direction == 'backward' && !(this.boundaries && this.boundaries.start.isEqual(this.position))) {\n\t\t\t\t\t\tnextPosition = _position2.default.createBefore(item.textNode);\n\t\t\t\t\t\t// When we change nextPosition of returned value we need also update walker current position.\n\t\t\t\t\t\tthis.position = nextPosition;\n\t\t\t\t\t} else {\n\t\t\t\t\t\tpreviousPosition = _position2.default.createBefore(item.textNode);\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn {\n\t\t\t\tdone: false,\n\t\t\t\tvalue: {\n\t\t\t\t\ttype: type,\n\t\t\t\t\titem: item,\n\t\t\t\t\tpreviousPosition: previousPosition,\n\t\t\t\t\tnextPosition: nextPosition,\n\t\t\t\t\tlength: length\n\t\t\t\t}\n\t\t\t};\n\t\t}\n\t}]);\n\n\treturn TreeWalker;\n}();\n\n/**\n * Type of the step made by {@link module:engine/view/treewalker~TreeWalker}.\n * Possible values: `'elementStart'` if walker is at the beginning of a node, `'elementEnd'` if walker is at the end\n * of node, or `'text'` if walker traversed over single and multiple characters.\n * For {@link module:engine/view/text~Text} `elementStart` and `elementEnd` is not returned.\n *\n * @typedef {String} module:engine/view/treewalker~TreeWalkerValueType\n */\n\n/**\n * Object returned by {@link module:engine/view/treewalker~TreeWalker} when traversing tree view.\n *\n * @typedef {Object} module:engine/view/treewalker~TreeWalkerValue\n * @property {module:engine/view/treewalker~TreeWalkerValueType} type\n * @property {module:engine/view/item~Item} item Item between old and new positions of {@link module:engine/view/treewalker~TreeWalker}.\n * @property {module:engine/view/position~Position} previousPosition Previous position of the iterator.\n * * Forward iteration: For `'elementEnd'` it is the last position inside the element. For all other types it is the\n * position before the item. Note that it is more efficient to use this position then calculate the position before\n * the node using {@link module:engine/view/position~Position.createBefore}.\n * * Backward iteration: For `'elementStart'` it is the first position inside the element. For all other types it is\n * the position after item.\n * * If the position is at the beginning or at the end of the {@link module:engine/view/text~Text} it is always moved from the\n * inside of the Text to its parent just before or just after Text.\n * @property {module:engine/view/position~Position} nextPosition Next position of the iterator.\n * * Forward iteration: For `'elementStart'` it is the first position inside the element. For all other types it is\n * the position after the item.\n * * Backward iteration: For `'elementEnd'` it is last position inside element. For all other types it is the position\n * before the item.\n * * If the position is at the beginning or at the end of the {@link module:engine/view/text~Text} it is always moved from the\n * inside of the Text to its parent just before or just after Text.\n * @property {Number} [length] Length of the item. For `'elementStart'` it is 1. For `'text'` it is\n * the length of the text. For `'elementEnd'` it is undefined.\n */\n\n/**\n * Tree walking directions.\n *\n * @typedef {'forward'|'backward'} module:engine/view/treewalker~TreeWalkerDirection\n */\n\n\nexports.default = TreeWalker;\n\n/***/ }),\n/* 77 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\nexports.breakAttributes = breakAttributes;\nexports.breakContainer = breakContainer;\nexports.mergeAttributes = mergeAttributes;\nexports.mergeContainers = mergeContainers;\nexports.breakViewRangePerContainer = breakViewRangePerContainer;\nexports.insert = insert;\nexports.remove = remove;\nexports.clear = clear;\nexports.move = move;\nexports.wrap = wrap;\nexports.wrapPosition = wrapPosition;\nexports.unwrap = unwrap;\nexports.rename = rename;\n\nvar _position = __webpack_require__(24);\n\nvar _position2 = _interopRequireDefault(_position);\n\nvar _containerelement = __webpack_require__(39);\n\nvar _containerelement2 = _interopRequireDefault(_containerelement);\n\nvar _attributeelement = __webpack_require__(115);\n\nvar _attributeelement2 = _interopRequireDefault(_attributeelement);\n\nvar _emptyelement = __webpack_require__(168);\n\nvar _emptyelement2 = _interopRequireDefault(_emptyelement);\n\nvar _uielement = __webpack_require__(171);\n\nvar _uielement2 = _interopRequireDefault(_uielement);\n\nvar _text = __webpack_require__(29);\n\nvar _text2 = _interopRequireDefault(_text);\n\nvar _range = __webpack_require__(33);\n\nvar _range2 = _interopRequireDefault(_range);\n\nvar _treewalker = __webpack_require__(76);\n\nvar _treewalker2 = _interopRequireDefault(_treewalker);\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nvar _documentfragment = __webpack_require__(116);\n\nvar _documentfragment2 = _interopRequireDefault(_documentfragment);\n\nvar _isiterable = __webpack_require__(41);\n\nvar _isiterable2 = _interopRequireDefault(_isiterable);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _toConsumableArray(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } else { return Array.from(arr); } } /**\n                                                                                                                                                                                                     * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                     * For licensing, see LICENSE.md.\n                                                                                                                                                                                                     */\n\n/**\n * @module module:engine/view/writer\n */\n\n/**\n * Contains functions used for composing view tree.\n *\n * @namespace writer\n */\n\nvar writer = {\n\tbreakAttributes: breakAttributes,\n\tbreakContainer: breakContainer,\n\tmergeAttributes: mergeAttributes,\n\tmergeContainers: mergeContainers,\n\tinsert: insert,\n\tremove: remove,\n\tclear: clear,\n\tmove: move,\n\twrap: wrap,\n\twrapPosition: wrapPosition,\n\tunwrap: unwrap,\n\trename: rename,\n\tbreakViewRangePerContainer: breakViewRangePerContainer\n};\n\nexports.default = writer;\n\n/**\n * Breaks attribute nodes at provided position or at boundaries of provided range. It breaks attribute elements inside\n * up to a container element.\n *\n * In following examples `<p>` is a container, `<b>` and `<u>` are attribute nodes:\n *\n *\t\t<p>foo<b><u>bar{}</u></b></p> -> <p>foo<b><u>bar</u></b>[]</p>\n *\t\t<p>foo<b><u>{}bar</u></b></p> -> <p>foo{}<b><u>bar</u></b></p>\n *\t\t<p>foo<b><u>b{}ar</u></b></p> -> <p>foo<b><u>b</u></b>[]<b><u>ar</u></b></p>\n *\t\t<p><b>fo{o</b><u>ba}r</u></p> -> <p><b>fo</b><b>o</b><u>ba</u><u>r</u></b></p>\n *\n * **Note:** {@link module:engine/view/documentfragment~DocumentFragment DocumentFragment} is treated like a container.\n *\n * **Note:** Difference between {@link module:engine/view/writer~writer.breakAttributes breakAttributes} and\n * {@link module:engine/view/writer~writer.breakContainer breakContainer} is that `breakAttributes` breaks all\n * {@link module:engine/view/attributeelement~AttributeElement attribute elements} that are ancestors of given `position`, up to the first\n * encountered {@link module:engine/view/containerelement~ContainerElement container element}. `breakContainer` assumes that given\n * `position`\n * is directly in container element and breaks that container element.\n *\n * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-writer-invalid-range-container`\n * when {@link module:engine/view/range~Range#start start}\n * and {@link module:engine/view/range~Range#end end} positions of a passed range are not placed inside same parent container.\n *\n * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-writer-cannot-break-empty-element`\n * when trying to break attributes\n * inside {@link module:engine/view/emptyelement~EmptyElement EmptyElement}.\n *\n * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-writer-cannot-break-ui-element`\n * when trying to break attributes\n * inside {@link module:engine/view/uielement~UIElement UIElement}.\n *\n * @see module:engine/view/attributeelement~AttributeElement\n * @see module:engine/view/containerelement~ContainerElement\n * @see module:engine/view/writer~writer.breakContainer\n * @function module:engine/view/writer~writer.breakAttributes\n * @param {module:engine/view/position~Position|module:engine/view/range~Range} positionOrRange Position where to break attribute elements.\n * @returns {module:engine/view/position~Position|module:engine/view/range~Range} New position or range, after breaking the attribute\n * elements.\n */\n\nfunction breakAttributes(positionOrRange) {\n\tif (positionOrRange instanceof _position2.default) {\n\t\treturn _breakAttributes(positionOrRange);\n\t} else {\n\t\treturn _breakAttributesRange(positionOrRange);\n\t}\n}\n\n/**\n * Breaks {@link module:engine/view/containerelement~ContainerElement container view element} into two, at the given position. Position\n * has to be directly inside container element and cannot be in root. Does not break if position is at the beginning\n * or at the end of it's parent element.\n *\n *\t\t<p>foo^bar</p> -> <p>foo</p><p>bar</p>\n *\t\t<div><p>foo</p>^<p>bar</p></div> -> <div><p>foo</p></div><div><p>bar</p></div>\n *\t\t<p>^foobar</p> -> ^<p>foobar</p>\n *\t\t<p>foobar^</p> -> <p>foobar</p>^\n *\n * **Note:** Difference between {@link module:engine/view/writer~writer.breakAttributes breakAttributes} and\n * {@link module:engine/view/writer~writer.breakContainer breakContainer} is that `breakAttributes` breaks all\n * {@link module:engine/view/attributeelement~AttributeElement attribute elements} that are ancestors of given `position`, up to the first\n * encountered {@link module:engine/view/containerelement~ContainerElement container element}. `breakContainer` assumes that given\n * `position`\n * is directly in container element and breaks that container element.\n *\n * @see module:engine/view/attributeelement~AttributeElement\n * @see module:engine/view/containerelement~ContainerElement\n * @see module:engine/view/writer~writer.breakAttributes\n * @function module:engine/view/writer~writer.breakContainer\n * @param {module:engine/view/position~Position} position Position where to break element.\n * @returns {module:engine/view/position~Position} Position between broken elements. If element has not been broken, the returned position\n * is placed either before it or after it.\n */\nfunction breakContainer(position) {\n\tvar element = position.parent;\n\n\tif (!element.is('containerElement')) {\n\t\t/**\n   * Trying to break an element which is not a container element.\n   *\n   * @error view-writer-break-non-container-element\n   */\n\t\tthrow new _ckeditorerror2.default('view-writer-break-non-container-element: Trying to break an element which is not a container element.');\n\t}\n\n\tif (!element.parent) {\n\t\t/**\n   * Trying to break root element.\n   *\n   * @error view-writer-break-root\n   */\n\t\tthrow new _ckeditorerror2.default('view-writer-break-root: Trying to break root element.');\n\t}\n\n\tif (position.isAtStart) {\n\t\treturn _position2.default.createBefore(element);\n\t} else if (!position.isAtEnd) {\n\t\tvar newElement = element.clone(false);\n\n\t\tinsert(_position2.default.createAfter(element), newElement);\n\n\t\tvar sourceRange = new _range2.default(position, _position2.default.createAt(element, 'end'));\n\t\tvar targetPosition = new _position2.default(newElement, 0);\n\n\t\tmove(sourceRange, targetPosition);\n\t}\n\n\treturn _position2.default.createAfter(element);\n}\n\n/**\n * Merges {@link module:engine/view/attributeelement~AttributeElement attribute elements}. It also merges text nodes if needed.\n * Only {@link module:engine/view/attributeelement~AttributeElement#isSimilar similar} attribute elements can be merged.\n *\n * In following examples `<p>` is a container and `<b>` is an attribute element:\n *\n *\t\t<p>foo[]bar</p> -> <p>foo{}bar</p>\n *\t\t<p><b>foo</b>[]<b>bar</b></p> -> <p><b>foo{}bar</b></p>\n *\t\t<p><b foo=\"bar\">a</b>[]<b foo=\"baz\">b</b></p> -> <p><b foo=\"bar\">a</b>[]<b foo=\"baz\">b</b></p>\n *\n * It will also take care about empty attributes when merging:\n *\n *\t\t<p><b>[]</b></p> -> <p>[]</p>\n *\t\t<p><b>foo</b><i>[]</i><b>bar</b></p> -> <p><b>foo{}bar</b></p>\n *\n * **Note:** Difference between {@link module:engine/view/writer~writer.mergeAttributes mergeAttributes} and\n * {@link module:engine/view/writer~writer.mergeContainers mergeContainers} is that `mergeAttributes` merges two\n * {@link module:engine/view/attributeelement~AttributeElement attribute elements} or {@link module:engine/view/text~Text text nodes}\n * while `mergeContainer` merges two {@link module:engine/view/containerelement~ContainerElement container elements}.\n *\n * @see module:engine/view/attributeelement~AttributeElement\n * @see module:engine/view/containerelement~ContainerElement\n * @see module:engine/view/writer~writer.mergeContainers\n * @function module:engine/view/writer~writer.mergeAttributes\n * @param {module:engine/view/position~Position} position Merge position.\n * @returns {module:engine/view/position~Position} Position after merge.\n */\nfunction mergeAttributes(position) {\n\tvar positionOffset = position.offset;\n\tvar positionParent = position.parent;\n\n\t// When inside text node - nothing to merge.\n\tif (positionParent.is('text')) {\n\t\treturn position;\n\t}\n\n\t// When inside empty attribute - remove it.\n\tif (positionParent.is('attributeElement') && positionParent.childCount === 0) {\n\t\tvar parent = positionParent.parent;\n\t\tvar offset = positionParent.index;\n\t\tpositionParent.remove();\n\n\t\treturn mergeAttributes(new _position2.default(parent, offset));\n\t}\n\n\tvar nodeBefore = positionParent.getChild(positionOffset - 1);\n\tvar nodeAfter = positionParent.getChild(positionOffset);\n\n\t// Position should be placed between two nodes.\n\tif (!nodeBefore || !nodeAfter) {\n\t\treturn position;\n\t}\n\n\t// When position is between two text nodes.\n\tif (nodeBefore.is('text') && nodeAfter.is('text')) {\n\t\treturn mergeTextNodes(nodeBefore, nodeAfter);\n\t}\n\t// When selection is between two same attribute elements.\n\telse if (nodeBefore.is('attributeElement') && nodeAfter.is('attributeElement') && nodeBefore.isSimilar(nodeAfter)) {\n\t\t\t// Move all children nodes from node placed after selection and remove that node.\n\t\t\tvar count = nodeBefore.childCount;\n\t\t\tnodeBefore.appendChildren(nodeAfter.getChildren());\n\t\t\tnodeAfter.remove();\n\n\t\t\t// New position is located inside the first node, before new nodes.\n\t\t\t// Call this method recursively to merge again if needed.\n\t\t\treturn mergeAttributes(new _position2.default(nodeBefore, count));\n\t\t}\n\n\treturn position;\n}\n\n/**\n * Merges two {@link module:engine/view/containerelement~ContainerElement container elements} that are before and after given position.\n * Precisely, the element after the position is removed and it's contents are moved to element before the position.\n *\n *\t\t<p>foo</p>^<p>bar</p> -> <p>foo^bar</p>\n *\t\t<div>foo</div>^<p>bar</p> -> <div>foo^bar</div>\n *\n * **Note:** Difference between {@link module:engine/view/writer~writer.mergeAttributes mergeAttributes} and\n * {@link module:engine/view/writer~writer.mergeContainers mergeContainers} is that `mergeAttributes` merges two\n * {@link module:engine/view/attributeelement~AttributeElement attribute elements} or {@link module:engine/view/text~Text text nodes}\n * while `mergeContainer` merges two {@link module:engine/view/containerelement~ContainerElement container elements}.\n *\n * @see module:engine/view/attributeelement~AttributeElement\n * @see module:engine/view/containerelement~ContainerElement\n * @see module:engine/view/writer~writer.mergeAttributes\n * @function module:engine/view/writer~writer.mergeContainers\n * @param {module:engine/view/position~Position} position Merge position.\n * @returns {module:engine/view/position~Position} Position after merge.\n */\nfunction mergeContainers(position) {\n\tvar prev = position.nodeBefore;\n\tvar next = position.nodeAfter;\n\n\tif (!prev || !next || !prev.is('containerElement') || !next.is('containerElement')) {\n\t\t/**\n   * Element before and after given position cannot be merged.\n   *\n   * @error view-writer-merge-containers-invalid-position\n   */\n\t\tthrow new _ckeditorerror2.default('view-writer-merge-containers-invalid-position: ' + 'Element before and after given position cannot be merged.');\n\t}\n\n\tvar lastChild = prev.getChild(prev.childCount - 1);\n\tvar newPosition = lastChild instanceof _text2.default ? _position2.default.createAt(lastChild, 'end') : _position2.default.createAt(prev, 'end');\n\n\tmove(_range2.default.createIn(next), _position2.default.createAt(prev, 'end'));\n\tremove(_range2.default.createOn(next));\n\n\treturn newPosition;\n}\n\n/**\n * Breaks given `range` on a set of {@link module:engine/view/range~Range ranges}, that each are contained within a\n * {@link module:engine/view/containerelement~ContainerElement container element}. After `range` is broken, it's \"pieces\" can\n * be used by other {@link module:engine/view/writer~writer} methods (which expect that passed ranges are contained within\n * one container element).\n *\n * @function module:engine/view/writer~writer.breakViewRangePerContainer\n * @param {module:engine/view/range~Range} range Range to break.\n * @returns {Array.<module:engine/view/range~Range>} Ranges that combine into passed `viewRange`.\n */\nfunction breakViewRangePerContainer(range) {\n\tvar ranges = [];\n\tvar walker = new _treewalker2.default({ boundaries: range });\n\n\tvar start = range.start;\n\n\tvar _iteratorNormalCompletion = true;\n\tvar _didIteratorError = false;\n\tvar _iteratorError = undefined;\n\n\ttry {\n\t\tfor (var _iterator = walker[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\tvar value = _step.value;\n\n\t\t\tif (value.item.is('containerElement')) {\n\t\t\t\tif (!start.isEqual(value.previousPosition)) {\n\t\t\t\t\tranges.push(new _range2.default(start, value.previousPosition));\n\t\t\t\t}\n\n\t\t\t\tstart = value.nextPosition;\n\t\t\t}\n\t\t}\n\t} catch (err) {\n\t\t_didIteratorError = true;\n\t\t_iteratorError = err;\n\t} finally {\n\t\ttry {\n\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t_iterator.return();\n\t\t\t}\n\t\t} finally {\n\t\t\tif (_didIteratorError) {\n\t\t\t\tthrow _iteratorError;\n\t\t\t}\n\t\t}\n\t}\n\n\tranges.push(new _range2.default(start, range.end));\n\n\treturn ranges;\n}\n\n/**\n * Insert node or nodes at specified position. Takes care about breaking attributes before insertion\n * and merging them afterwards.\n *\n * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-writer-insert-invalid-node` when nodes to insert\n * contains instances that are not {@link module:engine/view/text~Text Texts},\n * {@link module:engine/view/attributeelement~AttributeElement AttributeElements},\n * {@link module:engine/view/containerelement~ContainerElement ContainerElements},\n * {@link module:engine/view/emptyelement~EmptyElement EmptyElements} or\n * {@link module:engine/view/uielement~UIElement UIElements}.\n *\n * @function insert\n * @param {module:engine/view/position~Position} position Insertion position.\n * @param {module:engine/view/text~Text|module:engine/view/attributeelement~AttributeElement|\n * module:engine/view/containerelement~ContainerElement|module:engine/view/emptyelement~EmptyElement|\n * module:engine/view/uielement~UIElement|Iterable.<module:engine/view/text~Text|\n * module:engine/view/attributeelement~AttributeElement|module:engine/view/containerelement~ContainerElement|\n * module:engine/view/emptyelement~EmptyElement|module:engine/view/uielement~UIElement>} nodes Node or nodes to insert.\n * @returns {module:engine/view/range~Range} Range around inserted nodes.\n */\nfunction insert(position, nodes) {\n\tnodes = (0, _isiterable2.default)(nodes) ? [].concat(_toConsumableArray(nodes)) : [nodes];\n\n\t// Check if nodes to insert are instances of AttributeElements, ContainerElements, EmptyElements, UIElements or Text.\n\tvalidateNodesToInsert(nodes);\n\n\tvar container = getParentContainer(position);\n\n\tif (!container) {\n\t\t/**\n   * Position's parent container cannot be found.\n   *\n   * @error view-writer-invalid-position-container\n   */\n\t\tthrow new _ckeditorerror2.default('view-writer-invalid-position-container');\n\t}\n\n\tvar insertionPosition = _breakAttributes(position, true);\n\n\tvar length = container.insertChildren(insertionPosition.offset, nodes);\n\tvar endPosition = insertionPosition.getShiftedBy(length);\n\tvar start = mergeAttributes(insertionPosition);\n\n\t// When no nodes were inserted - return collapsed range.\n\tif (length === 0) {\n\t\treturn new _range2.default(start, start);\n\t} else {\n\t\t// If start position was merged - move end position.\n\t\tif (!start.isEqual(insertionPosition)) {\n\t\t\tendPosition.offset--;\n\t\t}\n\n\t\tvar end = mergeAttributes(endPosition);\n\n\t\treturn new _range2.default(start, end);\n\t}\n}\n\n/**\n * Removes provided range from the container.\n *\n * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-writer-invalid-range-container` when\n * {@link module:engine/view/range~Range#start start} and {@link module:engine/view/range~Range#end end} positions are not placed inside\n * same parent container.\n *\n * @function module:engine/view/writer~writer.remove\n * @param {module:engine/view/range~Range} range Range to remove from container. After removing, it will be updated\n * to a collapsed range showing the new position.\n * @returns {module:engine/view/documentfragment~DocumentFragment} Document fragment containing removed nodes.\n */\nfunction remove(range) {\n\tvalidateRangeContainer(range);\n\n\t// If range is collapsed - nothing to remove.\n\tif (range.isCollapsed) {\n\t\treturn new _documentfragment2.default();\n\t}\n\n\t// Break attributes at range start and end.\n\n\tvar _breakAttributesRange2 = _breakAttributesRange(range, true),\n\t    breakStart = _breakAttributesRange2.start,\n\t    breakEnd = _breakAttributesRange2.end;\n\n\tvar parentContainer = breakStart.parent;\n\n\tvar count = breakEnd.offset - breakStart.offset;\n\n\t// Remove nodes in range.\n\tvar removed = parentContainer.removeChildren(breakStart.offset, count);\n\n\t// Merge after removing.\n\tvar mergePosition = mergeAttributes(breakStart);\n\trange.start = mergePosition;\n\trange.end = _position2.default.createFromPosition(mergePosition);\n\n\t// Return removed nodes.\n\treturn new _documentfragment2.default(removed);\n}\n\n/**\n * Removes matching elements from given range.\n *\n * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-writer-invalid-range-container` when\n * {@link module:engine/view/range~Range#start start} and {@link module:engine/view/range~Range#end end} positions are not placed inside\n * same parent container.\n *\n * @function module:engine/view/writer~writer.clear\n * @param {module:engine/view/range~Range} range Range to clear.\n * @param {module:engine/view/element~Element} element Element to remove.\n */\nfunction clear(range, element) {\n\tvalidateRangeContainer(range);\n\n\t// Create walker on given range.\n\t// We walk backward because when we remove element during walk it modifies range end position.\n\tvar walker = range.getWalker({\n\t\tdirection: 'backward',\n\t\tignoreElementEnd: true\n\t});\n\n\t// Let's walk.\n\tvar _iteratorNormalCompletion2 = true;\n\tvar _didIteratorError2 = false;\n\tvar _iteratorError2 = undefined;\n\n\ttry {\n\t\tfor (var _iterator2 = walker[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {\n\t\t\tvar current = _step2.value;\n\n\t\t\tvar item = current.item;\n\t\t\tvar rangeToRemove = void 0;\n\n\t\t\t// When current item matches to the given element.\n\t\t\tif (item.is('element') && element.isSimilar(item)) {\n\t\t\t\t// Create range on this element.\n\t\t\t\trangeToRemove = _range2.default.createOn(item);\n\t\t\t\t// When range starts inside Text or TextProxy element.\n\t\t\t} else if (!current.nextPosition.isAfter(range.start) && (item.is('text') || item.is('textProxy'))) {\n\t\t\t\t// We need to check if parent of this text matches to given element.\n\t\t\t\tvar parentElement = item.getAncestors().find(function (ancestor) {\n\t\t\t\t\treturn ancestor.is('element') && element.isSimilar(ancestor);\n\t\t\t\t});\n\n\t\t\t\t// If it is then create range inside this element.\n\t\t\t\tif (parentElement) {\n\t\t\t\t\trangeToRemove = _range2.default.createIn(parentElement);\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// If we have found element to remove.\n\t\t\tif (rangeToRemove) {\n\t\t\t\t// We need to check if element range stick out of the given range and truncate if it is.\n\t\t\t\tif (rangeToRemove.end.isAfter(range.end)) {\n\t\t\t\t\trangeToRemove.end = range.end;\n\t\t\t\t}\n\n\t\t\t\tif (rangeToRemove.start.isBefore(range.start)) {\n\t\t\t\t\trangeToRemove.start = range.start;\n\t\t\t\t}\n\n\t\t\t\t// At the end we remove range with found element.\n\t\t\t\tremove(rangeToRemove);\n\t\t\t}\n\t\t}\n\t} catch (err) {\n\t\t_didIteratorError2 = true;\n\t\t_iteratorError2 = err;\n\t} finally {\n\t\ttry {\n\t\t\tif (!_iteratorNormalCompletion2 && _iterator2.return) {\n\t\t\t\t_iterator2.return();\n\t\t\t}\n\t\t} finally {\n\t\t\tif (_didIteratorError2) {\n\t\t\t\tthrow _iteratorError2;\n\t\t\t}\n\t\t}\n\t}\n}\n\n/**\n * Moves nodes from provided range to target position.\n *\n * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-writer-invalid-range-container` when\n * {@link module:engine/view/range~Range#start start} and {@link module:engine/view/range~Range#end end} positions are not placed inside\n * same parent container.\n *\n * @function module:engine/view/writer~writer.move\n * @param {module:engine/view/range~Range} sourceRange Range containing nodes to move.\n * @param {module:engine/view/position~Position} targetPosition Position to insert.\n * @returns {module:engine/view/range~Range} Range in target container. Inserted nodes are placed between\n * {@link module:engine/view/range~Range#start start} and {@link module:engine/view/range~Range#end end} positions.\n */\nfunction move(sourceRange, targetPosition) {\n\tvar nodes = void 0;\n\n\tif (targetPosition.isAfter(sourceRange.end)) {\n\t\ttargetPosition = _breakAttributes(targetPosition, true);\n\n\t\tvar parent = targetPosition.parent;\n\t\tvar countBefore = parent.childCount;\n\n\t\tsourceRange = _breakAttributesRange(sourceRange, true);\n\n\t\tnodes = remove(sourceRange);\n\n\t\ttargetPosition.offset += parent.childCount - countBefore;\n\t} else {\n\t\tnodes = remove(sourceRange);\n\t}\n\n\treturn insert(targetPosition, nodes);\n}\n\n/**\n * Wraps elements within range with provided {@link module:engine/view/attributeelement~AttributeElement AttributeElement}.\n *\n * Throws {@link module:utils/ckeditorerror~CKEditorError} `view-writer-invalid-range-container`\n * when {@link module:engine/view/range~Range#start}\n * and {@link module:engine/view/range~Range#end} positions are not placed inside same parent container.\n * Throws {@link module:utils/ckeditorerror~CKEditorError} `view-writer-wrap-invalid-attribute` when passed attribute element is not\n * an instance of {module:engine/view/attributeelement~AttributeElement AttributeElement}.\n *\n * @function module:engine/view/writer~writer.wrap\n * @param {module:engine/view/range~Range} range Range to wrap.\n * @param {module:engine/view/attributeelement~AttributeElement} attribute Attribute element to use as wrapper.\n */\nfunction wrap(range, attribute) {\n\tif (!(attribute instanceof _attributeelement2.default)) {\n\t\t/**\n   * Attribute element need to be instance of attribute element.\n   *\n   * @error view-writer-wrap-invalid-attribute\n   */\n\t\tthrow new _ckeditorerror2.default('view-writer-wrap-invalid-attribute');\n\t}\n\n\tvalidateRangeContainer(range);\n\n\t// If range is collapsed - nothing to wrap.\n\tif (range.isCollapsed) {\n\t\treturn range;\n\t}\n\n\t// Range around one element.\n\tif (range.end.isEqual(range.start.getShiftedBy(1))) {\n\t\tvar node = range.start.nodeAfter;\n\n\t\tif (node instanceof _attributeelement2.default && wrapAttributeElement(attribute, node)) {\n\t\t\treturn range;\n\t\t}\n\t}\n\n\t// Range is inside single attribute and spans on all children.\n\tif (rangeSpansOnAllChildren(range) && wrapAttributeElement(attribute, range.start.parent)) {\n\t\tvar parent = range.start.parent.parent;\n\t\tvar index = range.start.parent.index;\n\n\t\treturn _range2.default.createFromParentsAndOffsets(parent, index, parent, index + 1);\n\t}\n\n\t// Break attributes at range start and end.\n\n\tvar _breakAttributesRange3 = _breakAttributesRange(range, true),\n\t    breakStart = _breakAttributesRange3.start,\n\t    breakEnd = _breakAttributesRange3.end;\n\n\tvar parentContainer = breakStart.parent;\n\n\t// Unwrap children located between break points.\n\tvar unwrappedRange = unwrapChildren(parentContainer, breakStart.offset, breakEnd.offset, attribute);\n\n\t// Wrap all children with attribute.\n\tvar newRange = wrapChildren(parentContainer, unwrappedRange.start.offset, unwrappedRange.end.offset, attribute);\n\n\t// Merge attributes at the both ends and return a new range.\n\tvar start = mergeAttributes(newRange.start);\n\n\t// If start position was merged - move end position back.\n\tif (!start.isEqual(newRange.start)) {\n\t\tnewRange.end.offset--;\n\t}\n\tvar end = mergeAttributes(newRange.end);\n\n\treturn new _range2.default(start, end);\n}\n\n/**\n * Wraps position with provided attribute. Returns new position after wrapping. This method will also merge newly\n * added attribute with its siblings whenever possible.\n *\n * Throws {@link module:utils/ckeditorerror~CKEditorError} `view-writer-wrap-invalid-attribute` when passed attribute element is not\n * an instance of {module:engine/view/attributeelement~AttributeElement AttributeElement}.\n *\n * @param {module:engine/view/position~Position} position\n * @param {module:engine/view/attributeelement~AttributeElement} attribute\n * @returns {module:engine/view/position~Position} New position after wrapping.\n */\nfunction wrapPosition(position, attribute) {\n\tif (!(attribute instanceof _attributeelement2.default)) {\n\t\t/**\n   * Attribute element need to be instance of attribute element.\n   *\n   * @error view-writer-wrap-invalid-attribute\n   */\n\t\tthrow new _ckeditorerror2.default('view-writer-wrap-invalid-attribute');\n\t}\n\n\t// Return same position when trying to wrap with attribute similar to position parent.\n\tif (attribute.isSimilar(position.parent)) {\n\t\treturn movePositionToTextNode(_position2.default.createFromPosition(position));\n\t}\n\n\t// When position is inside text node - break it and place new position between two text nodes.\n\tif (position.parent.is('text')) {\n\t\tposition = breakTextNode(position);\n\t}\n\n\t// Create fake element that will represent position, and will not be merged with other attributes.\n\tvar fakePosition = new _attributeelement2.default();\n\tfakePosition.priority = Number.POSITIVE_INFINITY;\n\tfakePosition.isSimilar = function () {\n\t\treturn false;\n\t};\n\n\t// Insert fake element in position location.\n\tposition.parent.insertChildren(position.offset, fakePosition);\n\n\t// Range around inserted fake attribute element.\n\tvar wrapRange = new _range2.default(position, position.getShiftedBy(1));\n\n\t// Wrap fake element with attribute (it will also merge if possible).\n\twrap(wrapRange, attribute);\n\n\t// Remove fake element and place new position there.\n\tvar newPosition = new _position2.default(fakePosition.parent, fakePosition.index);\n\tfakePosition.remove();\n\n\t// If position is placed between text nodes - merge them and return position inside.\n\tvar nodeBefore = newPosition.nodeBefore;\n\tvar nodeAfter = newPosition.nodeAfter;\n\n\tif (nodeBefore instanceof _text2.default && nodeAfter instanceof _text2.default) {\n\t\treturn mergeTextNodes(nodeBefore, nodeAfter);\n\t}\n\n\t// If position is next to text node - move position inside.\n\treturn movePositionToTextNode(newPosition);\n}\n\n/**\n * Unwraps nodes within provided range from attribute element.\n *\n * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-writer-invalid-range-container` when\n * {@link module:engine/view/range~Range#start start} and {@link module:engine/view/range~Range#end end} positions are not placed inside\n * same parent container.\n *\n * @param {module:engine/view/range~Range} range\n * @param {module:engine/view/attributeelement~AttributeElement} element\n */\nfunction unwrap(range, attribute) {\n\tif (!(attribute instanceof _attributeelement2.default)) {\n\t\t/**\n   * Attribute element need to be instance of attribute element.\n   *\n   * @error view-writer-unwrap-invalid-attribute\n   */\n\t\tthrow new _ckeditorerror2.default('view-writer-unwrap-invalid-attribute');\n\t}\n\n\tvalidateRangeContainer(range);\n\n\t// If range is collapsed - nothing to unwrap.\n\tif (range.isCollapsed) {\n\t\treturn range;\n\t}\n\n\t// Range around one element - check if AttributeElement can be unwrapped partially when it's not similar.\n\t// For example:\n\t// <b class=\"foo bar\" title=\"baz\"></b> unwrap with:\t<b class=\"foo\"></p> result: <b class\"bar\" title=\"baz\"></b>\n\tif (range.end.isEqual(range.start.getShiftedBy(1))) {\n\t\tvar node = range.start.nodeAfter;\n\n\t\t// Unwrap single attribute element.\n\t\tif (!attribute.isSimilar(node) && node instanceof _attributeelement2.default && unwrapAttributeElement(attribute, node)) {\n\t\t\treturn range;\n\t\t}\n\t}\n\n\t// Break attributes at range start and end.\n\n\tvar _breakAttributesRange4 = _breakAttributesRange(range, true),\n\t    breakStart = _breakAttributesRange4.start,\n\t    breakEnd = _breakAttributesRange4.end;\n\n\tvar parentContainer = breakStart.parent;\n\n\t// Unwrap children located between break points.\n\tvar newRange = unwrapChildren(parentContainer, breakStart.offset, breakEnd.offset, attribute);\n\n\t// Merge attributes at the both ends and return a new range.\n\tvar start = mergeAttributes(newRange.start);\n\n\t// If start position was merged - move end position back.\n\tif (!start.isEqual(newRange.start)) {\n\t\tnewRange.end.offset--;\n\t}\n\tvar end = mergeAttributes(newRange.end);\n\n\treturn new _range2.default(start, end);\n}\n\n/**\n * Renames element by creating a copy of renamed element but with changed name and then moving contents of the\n * old element to the new one. Keep in mind that this will invalidate all {@link module:engine/view/position~Position positions} which\n * has renamed element as {@link module:engine/view/position~Position#parent a parent}.\n *\n * New element has to be created because `Element#tagName` property in DOM is readonly.\n *\n * Since this function creates a new element and removes the given one, the new element is returned to keep reference.\n *\n * @param {module:engine/view/containerelement~ContainerElement} viewElement Element to be renamed.\n * @param {String} newName New name for element.\n */\nfunction rename(viewElement, newName) {\n\tvar newElement = new _containerelement2.default(newName, viewElement.getAttributes());\n\n\tinsert(_position2.default.createAfter(viewElement), newElement);\n\tmove(_range2.default.createIn(viewElement), _position2.default.createAt(newElement));\n\tremove(_range2.default.createOn(viewElement));\n\n\treturn newElement;\n}\n\n// Returns first parent container of specified {@link module:engine/view/position~Position Position}.\n// Position's parent node is checked as first, then next parents are checked.\n// Note that {@link module:engine/view/documentfragment~DocumentFragment DocumentFragment} is treated like a container.\n//\n// @param {module:engine/view/position~Position} position Position used as a start point to locate parent container.\n// @returns {module:engine/view/containerelement~ContainerElement|module:engine/view/documentfragment~DocumentFragment|undefined}\n// Parent container element or `undefined` if container is not found.\nfunction getParentContainer(position) {\n\tvar parent = position.parent;\n\n\twhile (!isContainerOrFragment(parent)) {\n\t\tif (!parent) {\n\t\t\treturn undefined;\n\t\t}\n\t\tparent = parent.parent;\n\t}\n\n\treturn parent;\n}\n\n// Function used by both public breakAttributes (without splitting text nodes) and by other methods (with\n// splitting text nodes).\n//\n// @param {module:engine/view/range~Range} range Range which `start` and `end` positions will be used to break attributes.\n// @param {Boolean} [forceSplitText = false] If set to `true`, will break text nodes even if they are directly in\n// container element. This behavior will result in incorrect view state, but is needed by other view writing methods\n// which then fixes view state. Defaults to `false`.\n// @returns {module:engine/view/range~Range} New range with located at break positions.\nfunction _breakAttributesRange(range) {\n\tvar forceSplitText = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;\n\n\tvar rangeStart = range.start;\n\tvar rangeEnd = range.end;\n\n\tvalidateRangeContainer(range);\n\n\t// Break at the collapsed position. Return new collapsed range.\n\tif (range.isCollapsed) {\n\t\tvar position = _breakAttributes(range.start, forceSplitText);\n\n\t\treturn new _range2.default(position, position);\n\t}\n\n\tvar breakEnd = _breakAttributes(rangeEnd, forceSplitText);\n\tvar count = breakEnd.parent.childCount;\n\tvar breakStart = _breakAttributes(rangeStart, forceSplitText);\n\n\t// Calculate new break end offset.\n\tbreakEnd.offset += breakEnd.parent.childCount - count;\n\n\treturn new _range2.default(breakStart, breakEnd);\n}\n\n// Function used by public breakAttributes (without splitting text nodes) and by other methods (with\n// splitting text nodes).\n//\n// Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-writer-cannot-break-empty-element` when break position\n// is placed inside {@link module:engine/view/emptyelement~EmptyElement EmptyElement}.\n//\n// Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-writer-cannot-break-ui-element` when break position\n// is placed inside {@link module:engine/view/uielement~UIElement UIElement}.\n//\n// @param {module:engine/view/position~Position} position Position where to break attributes.\n// @param {Boolean} [forceSplitText = false] If set to `true`, will break text nodes even if they are directly in\n// container element. This behavior will result in incorrect view state, but is needed by other view writing methods\n// which then fixes view state. Defaults to `false`.\n// @returns {module:engine/view/position~Position} New position after breaking the attributes.\nfunction _breakAttributes(position) {\n\tvar forceSplitText = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;\n\n\tvar positionOffset = position.offset;\n\tvar positionParent = position.parent;\n\n\t// If position is placed inside EmptyElement - throw an exception as we cannot break inside.\n\tif (position.parent.is('emptyElement')) {\n\t\t/**\n   * Cannot break inside EmptyElement instance.\n   *\n   * @error view-writer-cannot-break-empty-element\n   */\n\t\tthrow new _ckeditorerror2.default('view-writer-cannot-break-empty-element');\n\t}\n\n\t// If position is placed inside UIElement - throw an exception as we cannot break inside.\n\tif (position.parent.is('uiElement')) {\n\t\t/**\n   * Cannot break inside UIElement instance.\n   *\n   * @error view-writer-cannot-break-ui-element\n   */\n\t\tthrow new _ckeditorerror2.default('view-writer-cannot-break-ui-element');\n\t}\n\n\t// There are no attributes to break and text nodes breaking is not forced.\n\tif (!forceSplitText && positionParent.is('text') && isContainerOrFragment(positionParent.parent)) {\n\t\treturn _position2.default.createFromPosition(position);\n\t}\n\n\t// Position's parent is container, so no attributes to break.\n\tif (isContainerOrFragment(positionParent)) {\n\t\treturn _position2.default.createFromPosition(position);\n\t}\n\n\t// Break text and start again in new position.\n\tif (positionParent.is('text')) {\n\t\treturn _breakAttributes(breakTextNode(position), forceSplitText);\n\t}\n\n\tvar length = positionParent.childCount;\n\n\t// <p>foo<b><u>bar{}</u></b></p>\n\t// <p>foo<b><u>bar</u>[]</b></p>\n\t// <p>foo<b><u>bar</u></b>[]</p>\n\tif (positionOffset == length) {\n\t\tvar newPosition = new _position2.default(positionParent.parent, positionParent.index + 1);\n\n\t\treturn _breakAttributes(newPosition, forceSplitText);\n\t} else\n\t\t// <p>foo<b><u>{}bar</u></b></p>\n\t\t// <p>foo<b>[]<u>bar</u></b></p>\n\t\t// <p>foo{}<b><u>bar</u></b></p>\n\t\tif (positionOffset === 0) {\n\t\t\tvar _newPosition = new _position2.default(positionParent.parent, positionParent.index);\n\n\t\t\treturn _breakAttributes(_newPosition, forceSplitText);\n\t\t}\n\t\t// <p>foo<b><u>b{}ar</u></b></p>\n\t\t// <p>foo<b><u>b[]ar</u></b></p>\n\t\t// <p>foo<b><u>b</u>[]<u>ar</u></b></p>\n\t\t// <p>foo<b><u>b</u></b>[]<b><u>ar</u></b></p>\n\t\telse {\n\t\t\t\tvar offsetAfter = positionParent.index + 1;\n\n\t\t\t\t// Break element.\n\t\t\t\tvar clonedNode = positionParent.clone();\n\n\t\t\t\t// Insert cloned node to position's parent node.\n\t\t\t\tpositionParent.parent.insertChildren(offsetAfter, clonedNode);\n\n\t\t\t\t// Get nodes to move.\n\t\t\t\tvar count = positionParent.childCount - positionOffset;\n\t\t\t\tvar nodesToMove = positionParent.removeChildren(positionOffset, count);\n\n\t\t\t\t// Move nodes to cloned node.\n\t\t\t\tclonedNode.appendChildren(nodesToMove);\n\n\t\t\t\t// Create new position to work on.\n\t\t\t\tvar _newPosition2 = new _position2.default(positionParent.parent, offsetAfter);\n\n\t\t\t\treturn _breakAttributes(_newPosition2, forceSplitText);\n\t\t\t}\n}\n\n// Unwraps children from provided `attribute`. Only children contained in `parent` element between\n// `startOffset` and `endOffset` will be unwrapped.\n//\n// @param {module:engine/view/element~Element} parent\n// @param {Number} startOffset\n// @param {Number} endOffset\n// @param {module:engine/view/element~Element} attribute\nfunction unwrapChildren(parent, startOffset, endOffset, attribute) {\n\tvar i = startOffset;\n\tvar unwrapPositions = [];\n\n\t// Iterate over each element between provided offsets inside parent.\n\twhile (i < endOffset) {\n\t\tvar child = parent.getChild(i);\n\n\t\t// If attributes are the similar, then unwrap.\n\t\tif (child.isSimilar(attribute)) {\n\t\t\tvar unwrapped = child.getChildren();\n\t\t\tvar count = child.childCount;\n\n\t\t\t// Replace wrapper element with its children\n\t\t\tchild.remove();\n\t\t\tparent.insertChildren(i, unwrapped);\n\n\t\t\t// Save start and end position of moved items.\n\t\t\tunwrapPositions.push(new _position2.default(parent, i), new _position2.default(parent, i + count));\n\n\t\t\t// Skip elements that were unwrapped. Assuming that there won't be another element to unwrap in child\n\t\t\t// elements.\n\t\t\ti += count;\n\t\t\tendOffset += count - 1;\n\t\t} else {\n\t\t\t// If other nested attribute is found start unwrapping there.\n\t\t\tif (child.is('attributeElement')) {\n\t\t\t\tunwrapChildren(child, 0, child.childCount, attribute);\n\t\t\t}\n\n\t\t\ti++;\n\t\t}\n\t}\n\n\t// Merge at each unwrap.\n\tvar offsetChange = 0;\n\n\tvar _iteratorNormalCompletion3 = true;\n\tvar _didIteratorError3 = false;\n\tvar _iteratorError3 = undefined;\n\n\ttry {\n\t\tfor (var _iterator3 = unwrapPositions[Symbol.iterator](), _step3; !(_iteratorNormalCompletion3 = (_step3 = _iterator3.next()).done); _iteratorNormalCompletion3 = true) {\n\t\t\tvar position = _step3.value;\n\n\t\t\tposition.offset -= offsetChange;\n\n\t\t\t// Do not merge with elements outside selected children.\n\t\t\tif (position.offset == startOffset || position.offset == endOffset) {\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\tvar newPosition = mergeAttributes(position);\n\n\t\t\t// If nodes were merged - other merge offsets will change.\n\t\t\tif (!newPosition.isEqual(position)) {\n\t\t\t\toffsetChange++;\n\t\t\t\tendOffset--;\n\t\t\t}\n\t\t}\n\t} catch (err) {\n\t\t_didIteratorError3 = true;\n\t\t_iteratorError3 = err;\n\t} finally {\n\t\ttry {\n\t\t\tif (!_iteratorNormalCompletion3 && _iterator3.return) {\n\t\t\t\t_iterator3.return();\n\t\t\t}\n\t\t} finally {\n\t\t\tif (_didIteratorError3) {\n\t\t\t\tthrow _iteratorError3;\n\t\t\t}\n\t\t}\n\t}\n\n\treturn _range2.default.createFromParentsAndOffsets(parent, startOffset, parent, endOffset);\n}\n\n// Wraps children with provided `attribute`. Only children contained in `parent` element between\n// `startOffset` and `endOffset` will be wrapped.\n//\n// @param {module:engine/view/element~Element} parent\n// @param {Number} startOffset\n// @param {Number} endOffset\n// @param {module:engine/view/element~Element} attribute\nfunction wrapChildren(parent, startOffset, endOffset, attribute) {\n\tvar i = startOffset;\n\tvar wrapPositions = [];\n\n\twhile (i < endOffset) {\n\t\tvar child = parent.getChild(i);\n\t\tvar isText = child.is('text');\n\t\tvar isAttribute = child.is('attributeElement');\n\t\tvar isEmpty = child.is('emptyElement');\n\t\tvar isUI = child.is('uiElement');\n\n\t\t// Wrap text, empty elements, ui elements or attributes with higher or equal priority.\n\t\tif (isText || isEmpty || isUI || isAttribute && attribute.priority <= child.priority) {\n\t\t\t// Clone attribute.\n\t\t\tvar newAttribute = attribute.clone();\n\n\t\t\t// Wrap current node with new attribute;\n\t\t\tchild.remove();\n\t\t\tnewAttribute.appendChildren(child);\n\t\t\tparent.insertChildren(i, newAttribute);\n\n\t\t\twrapPositions.push(new _position2.default(parent, i));\n\t\t}\n\t\t// If other nested attribute is found start wrapping there.\n\t\telse if (isAttribute) {\n\t\t\t\twrapChildren(child, 0, child.childCount, attribute);\n\t\t\t}\n\n\t\ti++;\n\t}\n\n\t// Merge at each wrap.\n\tvar offsetChange = 0;\n\n\tvar _iteratorNormalCompletion4 = true;\n\tvar _didIteratorError4 = false;\n\tvar _iteratorError4 = undefined;\n\n\ttry {\n\t\tfor (var _iterator4 = wrapPositions[Symbol.iterator](), _step4; !(_iteratorNormalCompletion4 = (_step4 = _iterator4.next()).done); _iteratorNormalCompletion4 = true) {\n\t\t\tvar position = _step4.value;\n\n\t\t\tposition.offset -= offsetChange;\n\n\t\t\t// Do not merge with elements outside selected children.\n\t\t\tif (position.offset == startOffset) {\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\tvar newPosition = mergeAttributes(position);\n\n\t\t\t// If nodes were merged - other merge offsets will change.\n\t\t\tif (!newPosition.isEqual(position)) {\n\t\t\t\toffsetChange++;\n\t\t\t\tendOffset--;\n\t\t\t}\n\t\t}\n\t} catch (err) {\n\t\t_didIteratorError4 = true;\n\t\t_iteratorError4 = err;\n\t} finally {\n\t\ttry {\n\t\t\tif (!_iteratorNormalCompletion4 && _iterator4.return) {\n\t\t\t\t_iterator4.return();\n\t\t\t}\n\t\t} finally {\n\t\t\tif (_didIteratorError4) {\n\t\t\t\tthrow _iteratorError4;\n\t\t\t}\n\t\t}\n\t}\n\n\treturn _range2.default.createFromParentsAndOffsets(parent, startOffset, parent, endOffset);\n}\n\n// Returns new position that is moved to near text node. Returns same position if there is no text node before of after\n// specified position.\n//\n//\t\t<p>foo[]</p>  ->  <p>foo{}</p>\n//\t\t<p>[]foo</p>  ->  <p>{}foo</p>\n//\n// @param {module:engine/view/position~Position} position\n// @returns {module:engine/view/position~Position} Position located inside text node or same position if there is no text nodes\n// before or after position location.\nfunction movePositionToTextNode(position) {\n\tvar nodeBefore = position.nodeBefore;\n\n\tif (nodeBefore && nodeBefore.is('text')) {\n\t\treturn new _position2.default(nodeBefore, nodeBefore.data.length);\n\t}\n\n\tvar nodeAfter = position.nodeAfter;\n\n\tif (nodeAfter && nodeAfter.is('text')) {\n\t\treturn new _position2.default(nodeAfter, 0);\n\t}\n\n\treturn position;\n}\n\n// Breaks text node into two text nodes when possible.\n//\n//\t\t<p>foo{}bar</p> -> <p>foo[]bar</p>\n//\t\t<p>{}foobar</p> -> <p>[]foobar</p>\n//\t\t<p>foobar{}</p> -> <p>foobar[]</p>\n//\n// @param {module:engine/view/position~Position} position Position that need to be placed inside text node.\n// @returns {module:engine/view/position~Position} New position after breaking text node.\nfunction breakTextNode(position) {\n\tif (position.offset == position.parent.data.length) {\n\t\treturn new _position2.default(position.parent.parent, position.parent.index + 1);\n\t}\n\n\tif (position.offset === 0) {\n\t\treturn new _position2.default(position.parent.parent, position.parent.index);\n\t}\n\n\t// Get part of the text that need to be moved.\n\tvar textToMove = position.parent.data.slice(position.offset);\n\n\t// Leave rest of the text in position's parent.\n\tposition.parent.data = position.parent.data.slice(0, position.offset);\n\n\t// Insert new text node after position's parent text node.\n\tposition.parent.parent.insertChildren(position.parent.index + 1, new _text2.default(textToMove));\n\n\t// Return new position between two newly created text nodes.\n\treturn new _position2.default(position.parent.parent, position.parent.index + 1);\n}\n\n// Merges two text nodes into first node. Removes second node and returns merge position.\n//\n// @param {module:engine/view/text~Text} t1 First text node to merge. Data from second text node will be moved at the end of\n// this text node.\n// @param {module:engine/view/text~Text} t2 Second text node to merge. This node will be removed after merging.\n// @returns {module:engine/view/position~Position} Position after merging text nodes.\nfunction mergeTextNodes(t1, t2) {\n\t// Merge text data into first text node and remove second one.\n\tvar nodeBeforeLength = t1.data.length;\n\tt1.data += t2.data;\n\tt2.remove();\n\n\treturn new _position2.default(t1, nodeBeforeLength);\n}\n\n// Wraps one {@link module:engine/view/attributeelement~AttributeElement AttributeElement} into another by merging them if possible.\n// Two AttributeElements can be merged when there is no attribute or style conflicts between them.\n// When merging is possible - all attributes, styles and classes are moved from wrapper element to element being\n// wrapped.\n//\n// @param {module:engine/view/attributeelement~AttributeElement} wrapper Wrapper AttributeElement.\n// @param {module:engine/view/attributeelement~AttributeElement} toWrap AttributeElement to wrap using wrapper element.\n// @returns {Boolean} Returns `true` if elements are merged.\nfunction wrapAttributeElement(wrapper, toWrap) {\n\t// Can't merge if name or priority differs.\n\tif (wrapper.name !== toWrap.name || wrapper.priority !== toWrap.priority) {\n\t\treturn false;\n\t}\n\n\t// Check if attributes can be merged.\n\tvar _iteratorNormalCompletion5 = true;\n\tvar _didIteratorError5 = false;\n\tvar _iteratorError5 = undefined;\n\n\ttry {\n\t\tfor (var _iterator5 = wrapper.getAttributeKeys()[Symbol.iterator](), _step5; !(_iteratorNormalCompletion5 = (_step5 = _iterator5.next()).done); _iteratorNormalCompletion5 = true) {\n\t\t\tvar key = _step5.value;\n\n\t\t\t// Classes and styles should be checked separately.\n\t\t\tif (key === 'class' || key === 'style') {\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\t// If some attributes are different we cannot wrap.\n\t\t\tif (toWrap.hasAttribute(key) && toWrap.getAttribute(key) !== wrapper.getAttribute(key)) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t}\n\n\t\t// Check if styles can be merged.\n\t} catch (err) {\n\t\t_didIteratorError5 = true;\n\t\t_iteratorError5 = err;\n\t} finally {\n\t\ttry {\n\t\t\tif (!_iteratorNormalCompletion5 && _iterator5.return) {\n\t\t\t\t_iterator5.return();\n\t\t\t}\n\t\t} finally {\n\t\t\tif (_didIteratorError5) {\n\t\t\t\tthrow _iteratorError5;\n\t\t\t}\n\t\t}\n\t}\n\n\tvar _iteratorNormalCompletion6 = true;\n\tvar _didIteratorError6 = false;\n\tvar _iteratorError6 = undefined;\n\n\ttry {\n\t\tfor (var _iterator6 = wrapper.getStyleNames()[Symbol.iterator](), _step6; !(_iteratorNormalCompletion6 = (_step6 = _iterator6.next()).done); _iteratorNormalCompletion6 = true) {\n\t\t\tvar _key = _step6.value;\n\n\t\t\tif (toWrap.hasStyle(_key) && toWrap.getStyle(_key) !== wrapper.getStyle(_key)) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t}\n\n\t\t// Move all attributes/classes/styles from wrapper to wrapped AttributeElement.\n\t} catch (err) {\n\t\t_didIteratorError6 = true;\n\t\t_iteratorError6 = err;\n\t} finally {\n\t\ttry {\n\t\t\tif (!_iteratorNormalCompletion6 && _iterator6.return) {\n\t\t\t\t_iterator6.return();\n\t\t\t}\n\t\t} finally {\n\t\t\tif (_didIteratorError6) {\n\t\t\t\tthrow _iteratorError6;\n\t\t\t}\n\t\t}\n\t}\n\n\tvar _iteratorNormalCompletion7 = true;\n\tvar _didIteratorError7 = false;\n\tvar _iteratorError7 = undefined;\n\n\ttry {\n\t\tfor (var _iterator7 = wrapper.getAttributeKeys()[Symbol.iterator](), _step7; !(_iteratorNormalCompletion7 = (_step7 = _iterator7.next()).done); _iteratorNormalCompletion7 = true) {\n\t\t\tvar _key2 = _step7.value;\n\n\t\t\t// Classes and styles should be checked separately.\n\t\t\tif (_key2 === 'class' || _key2 === 'style') {\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\t// Move only these attributes that are not present - other are similar.\n\t\t\tif (!toWrap.hasAttribute(_key2)) {\n\t\t\t\ttoWrap.setAttribute(_key2, wrapper.getAttribute(_key2));\n\t\t\t}\n\t\t}\n\t} catch (err) {\n\t\t_didIteratorError7 = true;\n\t\t_iteratorError7 = err;\n\t} finally {\n\t\ttry {\n\t\t\tif (!_iteratorNormalCompletion7 && _iterator7.return) {\n\t\t\t\t_iterator7.return();\n\t\t\t}\n\t\t} finally {\n\t\t\tif (_didIteratorError7) {\n\t\t\t\tthrow _iteratorError7;\n\t\t\t}\n\t\t}\n\t}\n\n\tvar _iteratorNormalCompletion8 = true;\n\tvar _didIteratorError8 = false;\n\tvar _iteratorError8 = undefined;\n\n\ttry {\n\t\tfor (var _iterator8 = wrapper.getStyleNames()[Symbol.iterator](), _step8; !(_iteratorNormalCompletion8 = (_step8 = _iterator8.next()).done); _iteratorNormalCompletion8 = true) {\n\t\t\tvar _key3 = _step8.value;\n\n\t\t\tif (!toWrap.hasStyle(_key3)) {\n\t\t\t\ttoWrap.setStyle(_key3, wrapper.getStyle(_key3));\n\t\t\t}\n\t\t}\n\t} catch (err) {\n\t\t_didIteratorError8 = true;\n\t\t_iteratorError8 = err;\n\t} finally {\n\t\ttry {\n\t\t\tif (!_iteratorNormalCompletion8 && _iterator8.return) {\n\t\t\t\t_iterator8.return();\n\t\t\t}\n\t\t} finally {\n\t\t\tif (_didIteratorError8) {\n\t\t\t\tthrow _iteratorError8;\n\t\t\t}\n\t\t}\n\t}\n\n\tvar _iteratorNormalCompletion9 = true;\n\tvar _didIteratorError9 = false;\n\tvar _iteratorError9 = undefined;\n\n\ttry {\n\t\tfor (var _iterator9 = wrapper.getClassNames()[Symbol.iterator](), _step9; !(_iteratorNormalCompletion9 = (_step9 = _iterator9.next()).done); _iteratorNormalCompletion9 = true) {\n\t\t\tvar _key4 = _step9.value;\n\n\t\t\tif (!toWrap.hasClass(_key4)) {\n\t\t\t\ttoWrap.addClass(_key4);\n\t\t\t}\n\t\t}\n\t} catch (err) {\n\t\t_didIteratorError9 = true;\n\t\t_iteratorError9 = err;\n\t} finally {\n\t\ttry {\n\t\t\tif (!_iteratorNormalCompletion9 && _iterator9.return) {\n\t\t\t\t_iterator9.return();\n\t\t\t}\n\t\t} finally {\n\t\t\tif (_didIteratorError9) {\n\t\t\t\tthrow _iteratorError9;\n\t\t\t}\n\t\t}\n\t}\n\n\treturn true;\n}\n\n// Unwraps {@link module:engine/view/attributeelement~AttributeElement AttributeElement} from another by removing corresponding attributes,\n// classes and styles. All attributes, classes and styles from wrapper should be present inside element being unwrapped.\n//\n// @param {module:engine/view/attributeelement~AttributeElement} wrapper Wrapper AttributeElement.\n// @param {module:engine/view/attributeelement~AttributeElement} toUnwrap AttributeElement to unwrap using wrapper element.\n// @returns {Boolean} Returns `true` if elements are unwrapped.\nfunction unwrapAttributeElement(wrapper, toUnwrap) {\n\t// Can't unwrap if name or priority differs.\n\tif (wrapper.name !== toUnwrap.name || wrapper.priority !== toUnwrap.priority) {\n\t\treturn false;\n\t}\n\n\t// Check if AttributeElement has all wrapper attributes.\n\tvar _iteratorNormalCompletion10 = true;\n\tvar _didIteratorError10 = false;\n\tvar _iteratorError10 = undefined;\n\n\ttry {\n\t\tfor (var _iterator10 = wrapper.getAttributeKeys()[Symbol.iterator](), _step10; !(_iteratorNormalCompletion10 = (_step10 = _iterator10.next()).done); _iteratorNormalCompletion10 = true) {\n\t\t\tvar key = _step10.value;\n\n\t\t\t// Classes and styles should be checked separately.\n\t\t\tif (key === 'class' || key === 'style') {\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\t// If some attributes are missing or different we cannot unwrap.\n\t\t\tif (!toUnwrap.hasAttribute(key) || toUnwrap.getAttribute(key) !== wrapper.getAttribute(key)) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t}\n\n\t\t// Check if AttributeElement has all wrapper classes.\n\t} catch (err) {\n\t\t_didIteratorError10 = true;\n\t\t_iteratorError10 = err;\n\t} finally {\n\t\ttry {\n\t\t\tif (!_iteratorNormalCompletion10 && _iterator10.return) {\n\t\t\t\t_iterator10.return();\n\t\t\t}\n\t\t} finally {\n\t\t\tif (_didIteratorError10) {\n\t\t\t\tthrow _iteratorError10;\n\t\t\t}\n\t\t}\n\t}\n\n\tif (!toUnwrap.hasClass.apply(toUnwrap, _toConsumableArray(wrapper.getClassNames()))) {\n\t\treturn false;\n\t}\n\n\t// Check if AttributeElement has all wrapper styles.\n\tvar _iteratorNormalCompletion11 = true;\n\tvar _didIteratorError11 = false;\n\tvar _iteratorError11 = undefined;\n\n\ttry {\n\t\tfor (var _iterator11 = wrapper.getStyleNames()[Symbol.iterator](), _step11; !(_iteratorNormalCompletion11 = (_step11 = _iterator11.next()).done); _iteratorNormalCompletion11 = true) {\n\t\t\tvar _key5 = _step11.value;\n\n\t\t\t// If some styles are missing or different we cannot unwrap.\n\t\t\tif (!toUnwrap.hasStyle(_key5) || toUnwrap.getStyle(_key5) !== wrapper.getStyle(_key5)) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t}\n\n\t\t// Remove all wrapper's attributes from unwrapped element.\n\t} catch (err) {\n\t\t_didIteratorError11 = true;\n\t\t_iteratorError11 = err;\n\t} finally {\n\t\ttry {\n\t\t\tif (!_iteratorNormalCompletion11 && _iterator11.return) {\n\t\t\t\t_iterator11.return();\n\t\t\t}\n\t\t} finally {\n\t\t\tif (_didIteratorError11) {\n\t\t\t\tthrow _iteratorError11;\n\t\t\t}\n\t\t}\n\t}\n\n\tvar _iteratorNormalCompletion12 = true;\n\tvar _didIteratorError12 = false;\n\tvar _iteratorError12 = undefined;\n\n\ttry {\n\t\tfor (var _iterator12 = wrapper.getAttributeKeys()[Symbol.iterator](), _step12; !(_iteratorNormalCompletion12 = (_step12 = _iterator12.next()).done); _iteratorNormalCompletion12 = true) {\n\t\t\tvar _key6 = _step12.value;\n\n\t\t\t// Classes and styles should be checked separately.\n\t\t\tif (_key6 === 'class' || _key6 === 'style') {\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\ttoUnwrap.removeAttribute(_key6);\n\t\t}\n\n\t\t// Remove all wrapper's classes from unwrapped element.\n\t} catch (err) {\n\t\t_didIteratorError12 = true;\n\t\t_iteratorError12 = err;\n\t} finally {\n\t\ttry {\n\t\t\tif (!_iteratorNormalCompletion12 && _iterator12.return) {\n\t\t\t\t_iterator12.return();\n\t\t\t}\n\t\t} finally {\n\t\t\tif (_didIteratorError12) {\n\t\t\t\tthrow _iteratorError12;\n\t\t\t}\n\t\t}\n\t}\n\n\ttoUnwrap.removeClass.apply(toUnwrap, _toConsumableArray(wrapper.getClassNames()));\n\n\t// Remove all wrapper's styles from unwrapped element.\n\ttoUnwrap.removeStyle.apply(toUnwrap, _toConsumableArray(wrapper.getStyleNames()));\n\n\treturn true;\n}\n\n// Returns `true` if range is located in same {@link module:engine/view/attributeelement~AttributeElement AttributeElement}\n// (`start` and `end` positions are located inside same {@link module:engine/view/attributeelement~AttributeElement AttributeElement}),\n// starts on 0 offset and ends after last child node.\n//\n// @param {module:engine/view/range~Range} Range\n// @returns {Boolean}\nfunction rangeSpansOnAllChildren(range) {\n\treturn range.start.parent == range.end.parent && range.start.parent.is('attributeElement') && range.start.offset === 0 && range.end.offset === range.start.parent.childCount;\n}\n\n// Checks if provided nodes are valid to insert. Checks if each node is an instance of\n// {@link module:engine/view/text~Text Text} or {@link module:engine/view/attributeelement~AttributeElement AttributeElement},\n// {@link module:engine/view/containerelement~ContainerElement ContainerElement},\n// {@link module:engine/view/emptyelement~EmptyElement EmptyElement} or\n// {@link module:engine/view/uielement~UIElement UIElement}.\n//\n// Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-writer-insert-invalid-node` when nodes to insert\n// contains instances that are not {@link module:engine/view/text~Text Texts},\n// {@link module:engine/view/emptyelement~EmptyElement EmptyElements},\n// {@link module:engine/view/uielement~UIElement UIElements},\n// {@link module:engine/view/attributeelement~AttributeElement AttributeElements} or\n// {@link module:engine/view/containerelement~ContainerElement ContainerElements}.\n//\n// @param Iterable.<module:engine/view/text~Text|module:engine/view/attributeelement~AttributeElement\n// |module:engine/view/containerelement~ContainerElement> nodes\nfunction validateNodesToInsert(nodes) {\n\tvar _iteratorNormalCompletion13 = true;\n\tvar _didIteratorError13 = false;\n\tvar _iteratorError13 = undefined;\n\n\ttry {\n\t\tvar _loop = function _loop() {\n\t\t\tvar node = _step13.value;\n\n\t\t\tif (!validNodesToInsert.some(function (validNode) {\n\t\t\t\treturn node instanceof validNode;\n\t\t\t})) {\n\t\t\t\t/**\n     * Inserted nodes should be valid to insert. of {@link module:engine/view/attributeelement~AttributeElement AttributeElement},\n     * {@link module:engine/view/containerelement~ContainerElement ContainerElement},\n     * {@link module:engine/view/emptyelement~EmptyElement EmptyElement},\n     * {@link module:engine/view/uielement~UIElement UIElement}, {@link module:engine/view/text~Text Text}.\n     *\n     * @error view-writer-insert-invalid-node\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('view-writer-insert-invalid-node');\n\t\t\t}\n\n\t\t\tif (!node.is('text')) {\n\t\t\t\tvalidateNodesToInsert(node.getChildren());\n\t\t\t}\n\t\t};\n\n\t\tfor (var _iterator13 = nodes[Symbol.iterator](), _step13; !(_iteratorNormalCompletion13 = (_step13 = _iterator13.next()).done); _iteratorNormalCompletion13 = true) {\n\t\t\t_loop();\n\t\t}\n\t} catch (err) {\n\t\t_didIteratorError13 = true;\n\t\t_iteratorError13 = err;\n\t} finally {\n\t\ttry {\n\t\t\tif (!_iteratorNormalCompletion13 && _iterator13.return) {\n\t\t\t\t_iterator13.return();\n\t\t\t}\n\t\t} finally {\n\t\t\tif (_didIteratorError13) {\n\t\t\t\tthrow _iteratorError13;\n\t\t\t}\n\t\t}\n\t}\n}\n\nvar validNodesToInsert = [_text2.default, _attributeelement2.default, _containerelement2.default, _emptyelement2.default, _uielement2.default];\n\n// Checks if node is ContainerElement or DocumentFragment, because in most cases they should be treated the same way.\n//\n// @param {module:engine/view/node~Node} node\n// @returns {Boolean} Returns `true` if node is instance of ContainerElement or DocumentFragment.\nfunction isContainerOrFragment(node) {\n\treturn node && (node.is('containerElement') || node.is('documentFragment'));\n}\n\n// Checks if {@link module:engine/view/range~Range#start range start} and {@link module:engine/view/range~Range#end range end} are placed\n// inside same {@link module:engine/view/containerelement~ContainerElement container element}.\n// Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-writer-invalid-range-container` when validation fails.\n//\n// @param {module:engine/view/range~Range} range\nfunction validateRangeContainer(range) {\n\tvar startContainer = getParentContainer(range.start);\n\tvar endContainer = getParentContainer(range.end);\n\n\tif (!startContainer || !endContainer || startContainer !== endContainer) {\n\t\t/**\n   * Range container is invalid. This can happen if {@link module:engine/view/range~Range#start range start} and\n   * {@link module:engine/view/range~Range#end range end} positions are not placed inside same container or\n   * parent container for these positions cannot be found.\n   *\n   * @error view-writer-invalid-range-container\n   */\n\t\tthrow new _ckeditorerror2.default('view-writer-invalid-range-container');\n\t}\n}\n\n/***/ }),\n/* 78 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module utils/collection\n */\n\nvar _emittermixin = __webpack_require__(8);\n\nvar _emittermixin2 = _interopRequireDefault(_emittermixin);\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nvar _uid = __webpack_require__(65);\n\nvar _uid2 = _interopRequireDefault(_uid);\n\nvar _mix = __webpack_require__(4);\n\nvar _mix2 = _interopRequireDefault(_mix);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * Collections are ordered sets of objects. Items in the collection can be retrieved by their indexes\n * in the collection (like in an array) or by their ids.\n *\n * If an object without an `id` property is being added to the collection, the `id` property will be generated\n * automatically. Note that the automatically generated id is unique only within this single collection instance.\n *\n * By default an item in the collection is identified by its `id` property. The name of the identifier can be\n * configured through the constructor of the collection.\n *\n * @mixes EventEmitter\n */\nvar Collection = function () {\n\t/**\n  * Creates a new Collection instance.\n  *\n  * @param {Iterable} [items] Items to be added to the collection.\n  * @param {Object} options The options object.\n  * @param {String} [options.idProperty='id'] The name of the property which is considered to identify an item.\n  */\n\tfunction Collection(options) {\n\t\t_classCallCheck(this, Collection);\n\n\t\t/**\n   * The internal list of items in the collection.\n   *\n   * @private\n   * @member {Object[]}\n   */\n\t\tthis._items = [];\n\n\t\t/**\n   * The internal map of items in the collection.\n   *\n   * @private\n   * @member {Map}\n   */\n\t\tthis._itemMap = new Map();\n\n\t\t/**\n   * The name of the property which is considered to identify an item.\n   *\n   * @private\n   * @member {String}\n   */\n\t\tthis._idProperty = options && options.idProperty || 'id';\n\t}\n\n\t/**\n  * The number of items available in the collection.\n  *\n  * @member {Number} #length\n  */\n\n\n\t_createClass(Collection, [{\n\t\tkey: 'add',\n\n\n\t\t/**\n   * Adds an item into the collection.\n   *\n   * If the item does not have an id, then it will be automatically generated and set on the item.\n   *\n   * @chainable\n   * @param {Object} item\n   * @param {Number} [index] The position of the item in the collection. The item\n   * is pushed to the collection when `index` not specified.\n   * @fires add\n   */\n\t\tvalue: function add(item, index) {\n\t\t\tvar itemId = void 0;\n\t\t\tvar idProperty = this._idProperty;\n\n\t\t\tif (idProperty in item) {\n\t\t\t\titemId = item[idProperty];\n\n\t\t\t\tif (typeof itemId != 'string') {\n\t\t\t\t\t/**\n      * This item's id should be a string.\n      *\n      * @error collection-add-invalid-id\n      */\n\t\t\t\t\tthrow new _ckeditorerror2.default('collection-add-invalid-id');\n\t\t\t\t}\n\n\t\t\t\tif (this.get(itemId)) {\n\t\t\t\t\t/**\n      * This item already exists in the collection.\n      *\n      * @error collection-add-item-already-exists\n      */\n\t\t\t\t\tthrow new _ckeditorerror2.default('collection-add-item-already-exists');\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\titem[idProperty] = itemId = (0, _uid2.default)();\n\t\t\t}\n\n\t\t\t// TODO: Use ES6 default function argument.\n\t\t\tif (index === undefined) {\n\t\t\t\tindex = this._items.length;\n\t\t\t} else if (index > this._items.length || index < 0) {\n\t\t\t\t/**\n     * The index number has invalid value.\n     *\n     * @error collection-add-item-bad-index\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('collection-add-item-invalid-index');\n\t\t\t}\n\n\t\t\tthis._items.splice(index, 0, item);\n\n\t\t\tthis._itemMap.set(itemId, item);\n\n\t\t\tthis.fire('add', item, index);\n\n\t\t\treturn this;\n\t\t}\n\n\t\t/**\n   * Gets item by its id or index.\n   *\n   * @param {String|Number} idOrIndex The item id or index in the collection.\n   * @returns {Object} The requested item or `null` if such item does not exist.\n   */\n\n\t}, {\n\t\tkey: 'get',\n\t\tvalue: function get(idOrIndex) {\n\t\t\tvar item = void 0;\n\n\t\t\tif (typeof idOrIndex == 'string') {\n\t\t\t\titem = this._itemMap.get(idOrIndex);\n\t\t\t} else if (typeof idOrIndex == 'number') {\n\t\t\t\titem = this._items[idOrIndex];\n\t\t\t} else {\n\t\t\t\t/**\n     * Index or id must be given.\n     *\n     * @error collection-get-invalid-arg\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('collection-get-invalid-arg: Index or id must be given.');\n\t\t\t}\n\n\t\t\treturn item || null;\n\t\t}\n\n\t\t/**\n   * Gets index of item in the collection.\n   * When item is not defined in the collection then index will be equal -1.\n   *\n   * @param {String|Object} idOrItem The item or its id in the collection.\n   * @returns {Number} Index of given item.\n   */\n\n\t}, {\n\t\tkey: 'getIndex',\n\t\tvalue: function getIndex(idOrItem) {\n\t\t\tvar item = void 0;\n\n\t\t\tif (typeof idOrItem == 'string') {\n\t\t\t\titem = this._itemMap.get(idOrItem);\n\t\t\t} else {\n\t\t\t\titem = idOrItem;\n\t\t\t}\n\n\t\t\treturn this._items.indexOf(item);\n\t\t}\n\n\t\t/**\n   * Removes an item from the collection.\n   *\n   * @param {Object|Number|String} subject The item to remove, its id or index in the collection.\n   * @returns {Object} The removed item.\n   * @fires remove\n   */\n\n\t}, {\n\t\tkey: 'remove',\n\t\tvalue: function remove(subject) {\n\t\t\tvar index = void 0,\n\t\t\t    id = void 0,\n\t\t\t    item = void 0;\n\t\t\tvar itemDoesNotExist = false;\n\t\t\tvar idProperty = this._idProperty;\n\n\t\t\tif (typeof subject == 'string') {\n\t\t\t\tid = subject;\n\t\t\t\titem = this._itemMap.get(id);\n\t\t\t\titemDoesNotExist = !item;\n\n\t\t\t\tif (item) {\n\t\t\t\t\tindex = this._items.indexOf(item);\n\t\t\t\t}\n\t\t\t} else if (typeof subject == 'number') {\n\t\t\t\tindex = subject;\n\t\t\t\titem = this._items[index];\n\t\t\t\titemDoesNotExist = !item;\n\n\t\t\t\tif (item) {\n\t\t\t\t\tid = item[idProperty];\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\titem = subject;\n\t\t\t\tid = item[idProperty];\n\t\t\t\tindex = this._items.indexOf(item);\n\t\t\t\titemDoesNotExist = index == -1 || !this._itemMap.get(id);\n\t\t\t}\n\n\t\t\tif (itemDoesNotExist) {\n\t\t\t\t/**\n     * Item not found.\n     *\n     * @error collection-remove-404\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('collection-remove-404: Item not found.');\n\t\t\t}\n\n\t\t\tthis._items.splice(index, 1);\n\t\t\tthis._itemMap.delete(id);\n\n\t\t\tthis.fire('remove', item);\n\n\t\t\treturn item;\n\t\t}\n\n\t\t/**\n   * Executes the callback for each item in the collection and composes an array or values returned by this callback.\n   *\n   * @param {Function} callback\n   * @param {Object} callback.item\n   * @param {Number} callback.index\n   * @params {Object} ctx Context in which the `callback` will be called.\n   * @returns {Array} The result of mapping.\n   */\n\n\t}, {\n\t\tkey: 'map',\n\t\tvalue: function map(callback, ctx) {\n\t\t\treturn this._items.map(callback, ctx);\n\t\t}\n\n\t\t/**\n   * Finds the first item in the collection for which the `callback` returns a true value.\n   *\n   * @param {Function} callback\n   * @param {Object} callback.item\n   * @param {Number} callback.index\n   * @returns {Object} The item for which `callback` returned a true value.\n   * @params {Object} ctx Context in which the `callback` will be called.\n   */\n\n\t}, {\n\t\tkey: 'find',\n\t\tvalue: function find(callback, ctx) {\n\t\t\treturn this._items.find(callback, ctx);\n\t\t}\n\n\t\t/**\n   * Returns an array with items for which the `callback` returned a true value.\n   *\n   * @param {Function} callback\n   * @param {Object} callback.item\n   * @param {Number} callback.index\n   * @params {Object} ctx Context in which the `callback` will be called.\n   * @returns {Object[]} The array with matching items.\n   */\n\n\t}, {\n\t\tkey: 'filter',\n\t\tvalue: function filter(callback, ctx) {\n\t\t\treturn this._items.filter(callback, ctx);\n\t\t}\n\n\t\t/**\n   * Removes all items from the collection.\n   */\n\n\t}, {\n\t\tkey: 'clear',\n\t\tvalue: function clear() {\n\t\t\twhile (this.length) {\n\t\t\t\tthis.remove(0);\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Collection iterator.\n   */\n\n\t}, {\n\t\tkey: Symbol.iterator,\n\t\tvalue: function value() {\n\t\t\treturn this._items[Symbol.iterator]();\n\t\t}\n\n\t\t/**\n   * Fired when an item is added to the collection.\n   *\n   * @event add\n   * @param {Object} item The added item.\n   */\n\n\t\t/**\n   * Fired when an item is removed from the collection.\n   *\n   * @event remove\n   * @param {Object} item The removed item.\n   */\n\n\t}, {\n\t\tkey: 'length',\n\t\tget: function get() {\n\t\t\treturn this._items.length;\n\t\t}\n\t}]);\n\n\treturn Collection;\n}();\n\nexports.default = Collection;\n\n\n(0, _mix2.default)(Collection, _emittermixin2.default);\n\n/***/ }),\n/* 79 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _emittermixin = __webpack_require__(8);\n\nvar _emittermixin2 = _interopRequireDefault(_emittermixin);\n\nvar _uid = __webpack_require__(65);\n\nvar _uid2 = _interopRequireDefault(_uid);\n\nvar _extend = __webpack_require__(53);\n\nvar _extend2 = _interopRequireDefault(_extend);\n\nvar _isNative = __webpack_require__(237);\n\nvar _isNative2 = _interopRequireDefault(_isNative);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } } /**\n                                                                                                                                                           * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                           * For licensing, see LICENSE.md.\n                                                                                                                                                           */\n\n/**\n * @module utils/dom/emittermixin\n */\n\n/**\n * Mixin that injects the DOM events API into its host. It provides the API\n * compatible with {@link module:utils/emittermixin~EmitterMixin}.\n *\n * DOM emitter mixin is by default available in the {@link module:ui/view~View} class,\n * but it can also be mixed into any other class:\n *\n *\t\timport mix from '../utils/mix.js';\n *\t\timport DomEmitterMixin from '../utils/dom/emittermixin.js';\n *\n *\t\tclass SomeView {}\n *\t\tmix( SomeView, DomEmitterMixin );\n *\n *\t\tconst view = new SomeView();\n *\t\tview.listenTo( domElement, ( evt, domEvt ) => {\n *\t\t\tconsole.log( evt, domEvt );\n *\t\t} );\n *\n * @mixin module:utils/dom/emittermixin~EmitterMixin\n * @mixes module:utils/emittermixin~EmitterMixin\n * @implements module:utils/dom/emittermixin~Emitter\n */\nvar DomEmitterMixin = (0, _extend2.default)({}, _emittermixin2.default, {\n\t/**\n  * Registers a callback function to be executed when an event is fired in a specific Emitter or DOM Node.\n  * It is backwards compatible with {@link module:utils/emittermixin~EmitterMixin#listenTo}.\n  *\n  * @param {module:utils/emittermixin~Emitter|Node} emitter The object that fires the event.\n  * @param {String} event The name of the event.\n  * @param {Function} callback The function to be called on event.\n  * @param {Object} [options={}] Additional options.\n  * @param {module:utils/priorities~PriorityString|Number} [options.priority='normal'] The priority of this event callback. The higher\n  * the priority value the sooner the callback will be fired. Events having the same priority are called in the\n  * order they were added.\n  * @param {Object} [options.context] The object that represents `this` in the callback. Defaults to the object firing the event.\n  * @param {Boolean} [options.useCapture=false] Indicates that events of this type will be dispatched to the registered\n  * listener before being dispatched to any EventTarget beneath it in the DOM tree.\n  *\n  * @method module:utils/dom/emittermixin~EmitterMixin#listenTo\n  */\n\tlistenTo: function listenTo() {\n\t\tfor (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {\n\t\t\targs[_key] = arguments[_key];\n\t\t}\n\n\t\tvar emitter = args[0];\n\n\t\t// Check if emitter is an instance of DOM Node. If so, replace the argument with\n\t\t// corresponding ProxyEmitter (or create one if not existing).\n\t\tif (isDomNode(emitter)) {\n\t\t\targs[0] = this._getProxyEmitter(emitter) || new ProxyEmitter(emitter);\n\t\t}\n\n\t\t// Execute parent class method with Emitter (or ProxyEmitter) instance.\n\t\t_emittermixin2.default.listenTo.apply(this, args);\n\t},\n\n\n\t/**\n  * Stops listening for events. It can be used at different levels:\n  * It is backwards compatible with {@link module:utils/emittermixin~EmitterMixin#listenTo}.\n  *\n  * * To stop listening to a specific callback.\n  * * To stop listening to a specific event.\n  * * To stop listening to all events fired by a specific object.\n  * * To stop listening to all events fired by all object.\n  *\n  * @param {module:utils/emittermixin~Emitter|Node} [emitter] The object to stop listening to. If omitted, stops it for all objects.\n  * @param {String} [event] (Requires the `emitter`) The name of the event to stop listening to. If omitted, stops it\n  * for all events from `emitter`.\n  * @param {Function} [callback] (Requires the `event`) The function to be removed from the call list for the given\n  * `event`.\n  *\n  * @method module:utils/dom/emittermixin~EmitterMixin#stopListening\n  */\n\tstopListening: function stopListening() {\n\t\tfor (var _len2 = arguments.length, args = Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {\n\t\t\targs[_key2] = arguments[_key2];\n\t\t}\n\n\t\tvar emitter = args[0];\n\n\t\t// Check if emitter is an instance of DOM Node. If so, replace the argument with corresponding ProxyEmitter.\n\t\tif (isDomNode(emitter)) {\n\t\t\tvar proxy = this._getProxyEmitter(emitter);\n\n\t\t\t// Element has no listeners.\n\t\t\tif (!proxy) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\targs[0] = proxy;\n\t\t}\n\n\t\t// Execute parent class method with Emitter (or ProxyEmitter) instance.\n\t\t_emittermixin2.default.stopListening.apply(this, args);\n\t},\n\n\n\t/**\n  * Retrieves ProxyEmitter instance for given DOM Node residing in this Host.\n  *\n  * @param {Node} node DOM Node of the ProxyEmitter.\n  * @method module:utils/dom/emittermixin~EmitterMixin#_getProxyEmitter\n  * @return {module:utils/dom/emittermixin~ProxyEmitter} ProxyEmitter instance or null.\n  */\n\t_getProxyEmitter: function _getProxyEmitter(node) {\n\t\treturn (0, _emittermixin._getEmitterListenedTo)(this, getNodeUID(node));\n\t}\n});\n\nexports.default = DomEmitterMixin;\n\n/**\n * Creates a ProxyEmitter instance. Such an instance is a bridge between a DOM Node firing events\n * and any Host listening to them. It is backwards compatible with {@link module:utils/emittermixin~EmitterMixin#on}.\n *\n *                                  listenTo( click, ... )\n *                    +-----------------------------------------+\n *                    |              stopListening( ... )       |\n *     +----------------------------+                           |             addEventListener( click, ... )\n *     | Host                       |                           |   +---------------------------------------------+\n *     +----------------------------+                           |   |       removeEventListener( click, ... )     |\n *     | _listeningTo: {            |                +----------v-------------+                                   |\n *     |   UID: {                   |                | ProxyEmitter           |                                   |\n *     |     emitter: ProxyEmitter, |                +------------------------+                      +------------v----------+\n *     |     callbacks: {           |                | events: {              |                      | Node (HTMLElement)    |\n *     |       click: [ callbacks ] |                |   click: [ callbacks ] |                      +-----------------------+\n *     |     }                      |                | },                     |                      | data-ck-expando: UID  |\n *     |   }                        |                | _domNode: Node,        |                      +-----------------------+\n *     | }                          |                | _domListeners: {},     |                                   |\n *     | +------------------------+ |                | _emitterId: UID        |                                   |\n *     | | DomEmitterMixin        | |                +--------------^---------+                                   |\n *     | +------------------------+ |                           |   |                                             |\n *     +--------------^-------------+                           |   +---------------------------------------------+\n *                    |                                         |                  click (DOM Event)\n *                    +-----------------------------------------+\n *                                fire( click, DOM Event )\n *\n * @mixes module:utils/emittermixin~EmitterMixin\n * @implements module:utils/dom/emittermixin~Emitter\n * @private\n */\n\nvar ProxyEmitter =\n/**\n * @param {Node} node DOM Node that fires events.\n * @returns {Object} ProxyEmitter instance bound to the DOM Node.\n */\nfunction ProxyEmitter(node) {\n\t_classCallCheck(this, ProxyEmitter);\n\n\t// Set emitter ID to match DOM Node \"expando\" property.\n\t(0, _emittermixin._setEmitterId)(this, getNodeUID(node));\n\n\t// Remember the DOM Node this ProxyEmitter is bound to.\n\tthis._domNode = node;\n};\n\n(0, _extend2.default)(ProxyEmitter.prototype, _emittermixin2.default, {\n\t/**\n  * Collection of native DOM listeners.\n  *\n  * @private\n  * @member {Object} module:utils/dom/emittermixin~ProxyEmitter#_domListeners\n  */\n\n\t/**\n  * Registers a callback function to be executed when an event is fired.\n  *\n  * It attaches a native DOM listener to the DOM Node. When fired,\n  * a corresponding Emitter event will also fire with DOM Event object as an argument.\n  *\n  * @param {String} event The name of the event.\n  * @param {Function} callback The function to be called on event.\n  * @param {Object} [options={}] Additional options.\n  * @param {module:utils/priorities~PriorityString|Number} [options.priority='normal'] The priority of this event callback. The higher\n  * the priority value the sooner the callback will be fired. Events having the same priority are called in the\n  * order they were added.\n  * @param {Object} [options.context] The object that represents `this` in the callback. Defaults to the object firing the event.\n  * @param {Boolean} [options.useCapture=false] Indicates that events of this type will be dispatched to the registered\n  * listener before being dispatched to any EventTarget beneath it in the DOM tree.\n  *\n  * @method module:utils/dom/emittermixin~ProxyEmitter#on\n  */\n\ton: function on(event, callback) {\n\t\tvar options = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};\n\n\t\t// Execute parent class method first.\n\t\t_emittermixin2.default.on.apply(this, arguments);\n\n\t\t// If the DOM Listener for given event already exist it is pointless\n\t\t// to attach another one.\n\t\tif (this._domListeners && this._domListeners[event]) {\n\t\t\treturn;\n\t\t}\n\n\t\tvar domListener = this._createDomListener(event);\n\n\t\t// Attach the native DOM listener to DOM Node.\n\t\tthis._domNode.addEventListener(event, domListener, !!options.useCapture);\n\n\t\tif (!this._domListeners) {\n\t\t\tthis._domListeners = {};\n\t\t}\n\n\t\t// Store the native DOM listener in this ProxyEmitter. It will be helpful\n\t\t// when stopping listening to the event.\n\t\tthis._domListeners[event] = domListener;\n\t},\n\n\n\t/**\n  * Stops executing the callback on the given event.\n  *\n  * @param {String} event The name of the event.\n  * @param {Function} callback The function to stop being called.\n  * @param {Object} [context] The context object to be removed, pared with the given callback. To handle cases where\n  * the same callback is used several times with different contexts.\n  *\n  * @method module:utils/dom/emittermixin~ProxyEmitter#off\n  */\n\toff: function off(event) {\n\t\t// Execute parent class method first.\n\t\t_emittermixin2.default.off.apply(this, arguments);\n\n\t\tvar events = void 0;\n\n\t\t// Remove native DOM listeners which are orphans. If no callbacks\n\t\t// are awaiting given event, detach native DOM listener from DOM Node.\n\t\t// See: {@link on}.\n\n\t\tif (this._domListeners[event] && (!(events = this._events[event]) || !events.callbacks.length)) {\n\t\t\tthis._domListeners[event].removeListener();\n\t\t}\n\t},\n\n\n\t/**\n  * Create a native DOM listener callback. When the native DOM event\n  * is fired it will fire corresponding event on this ProxyEmitter.\n  * Note: A native DOM Event is passed as an argument.\n  *\n  * @private\n  * @param {String} event\n  *\n  * @method module:utils/dom/emittermixin~ProxyEmitter#_createDomListener\n  * @returns {Function} The DOM listener callback.\n  */\n\t_createDomListener: function _createDomListener(event) {\n\t\tvar _this = this;\n\n\t\tvar domListener = function domListener(domEvt) {\n\t\t\t_this.fire(event, domEvt);\n\t\t};\n\n\t\t// Supply the DOM listener callback with a function that will help\n\t\t// detach it from the DOM Node, when it is no longer necessary.\n\t\t// See: {@link off}.\n\t\tdomListener.removeListener = function () {\n\t\t\t_this._domNode.removeEventListener(event, domListener);\n\t\t\tdelete _this._domListeners[event];\n\t\t};\n\n\t\treturn domListener;\n\t}\n});\n\n// Gets an unique DOM Node identifier. The identifier will be set if not defined.\n//\n// @private\n// @param {Node} node\n// @return {String} UID for given DOM Node.\nfunction getNodeUID(node) {\n\treturn node['data-ck-expando'] || (node['data-ck-expando'] = (0, _uid2.default)());\n}\n\n// Checks (naively) if given node is native DOM Node.\n//\n// @private\n// @param {Node} node\n// @return {Boolean} True when native DOM Node.\nfunction isDomNode(node) {\n\treturn node && (0, _isNative2.default)(node.addEventListener);\n}\n\n/**\n * Interface representing classes which mix in {@link module:utils/dom/emittermixin~EmitterMixin}.\n *\n * @interface Emitter\n */\n\n/***/ }),\n/* 80 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _listCacheClear = __webpack_require__(460);\n\nvar _listCacheClear2 = _interopRequireDefault(_listCacheClear);\n\nvar _listCacheDelete = __webpack_require__(461);\n\nvar _listCacheDelete2 = _interopRequireDefault(_listCacheDelete);\n\nvar _listCacheGet = __webpack_require__(462);\n\nvar _listCacheGet2 = _interopRequireDefault(_listCacheGet);\n\nvar _listCacheHas = __webpack_require__(463);\n\nvar _listCacheHas2 = _interopRequireDefault(_listCacheHas);\n\nvar _listCacheSet = __webpack_require__(464);\n\nvar _listCacheSet2 = _interopRequireDefault(_listCacheSet);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Creates an list cache object.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\nfunction ListCache(entries) {\n  var index = -1,\n      length = entries ? entries.length : 0;\n\n  this.clear();\n  while (++index < length) {\n    var entry = entries[index];\n    this.set(entry[0], entry[1]);\n  }\n}\n\n// Add methods to `ListCache`.\nListCache.prototype.clear = _listCacheClear2.default;\nListCache.prototype['delete'] = _listCacheDelete2.default;\nListCache.prototype.get = _listCacheGet2.default;\nListCache.prototype.has = _listCacheHas2.default;\nListCache.prototype.set = _listCacheSet2.default;\n\nexports.default = ListCache;\n\n/***/ }),\n/* 81 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _MapCache = __webpack_require__(122);\n\nvar _MapCache2 = _interopRequireDefault(_MapCache);\n\nvar _setCacheAdd = __webpack_require__(471);\n\nvar _setCacheAdd2 = _interopRequireDefault(_setCacheAdd);\n\nvar _setCacheHas = __webpack_require__(472);\n\nvar _setCacheHas2 = _interopRequireDefault(_setCacheHas);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n *\n * Creates an array cache object to store unique values.\n *\n * @private\n * @constructor\n * @param {Array} [values] The values to cache.\n */\nfunction SetCache(values) {\n  var index = -1,\n      length = values ? values.length : 0;\n\n  this.__data__ = new _MapCache2.default();\n  while (++index < length) {\n    this.add(values[index]);\n  }\n}\n\n// Add methods to `SetCache`.\nSetCache.prototype.add = SetCache.prototype.push = _setCacheAdd2.default;\nSetCache.prototype.has = _setCacheHas2.default;\n\nexports.default = SetCache;\n\n/***/ }),\n/* 82 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * A specialized version of `_.filter` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to iterate over.\n * @param {Function} predicate The function invoked per iteration.\n * @returns {Array} Returns the new filtered array.\n */\nfunction arrayFilter(array, predicate) {\n  var index = -1,\n      length = array.length,\n      resIndex = 0,\n      result = [];\n\n  while (++index < length) {\n    var value = array[index];\n    if (predicate(value, index, array)) {\n      result[resIndex++] = value;\n    }\n  }\n  return result;\n}\n\nexports.default = arrayFilter;\n\n/***/ }),\n/* 83 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * Appends the elements of `values` to `array`.\n *\n * @private\n * @param {Array} array The array to modify.\n * @param {Array} values The values to append.\n * @returns {Array} Returns `array`.\n */\nfunction arrayPush(array, values) {\n  var index = -1,\n      length = values.length,\n      offset = array.length;\n\n  while (++index < length) {\n    array[offset + index] = values[index];\n  }\n  return array;\n}\n\nexports.default = arrayPush;\n\n/***/ }),\n/* 84 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _eq = __webpack_require__(52);\n\nvar _eq2 = _interopRequireDefault(_eq);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Gets the index at which the `key` is found in `array` of key-value pairs.\n *\n * @private\n * @param {Array} array The array to search.\n * @param {*} key The key to search for.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\nfunction assocIndexOf(array, key) {\n  var length = array.length;\n  while (length--) {\n    if ((0, _eq2.default)(array[length][0], key)) {\n      return length;\n    }\n  }\n  return -1;\n}\n\nexports.default = assocIndexOf;\n\n/***/ }),\n/* 85 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseSortedIndexBy = __webpack_require__(133);\n\nvar _baseSortedIndexBy2 = _interopRequireDefault(_baseSortedIndexBy);\n\nvar _identity = __webpack_require__(231);\n\nvar _identity2 = _interopRequireDefault(_identity);\n\nvar _isSymbol = __webpack_require__(44);\n\nvar _isSymbol2 = _interopRequireDefault(_isSymbol);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** Used as references for the maximum length and index of an array. */\nvar MAX_ARRAY_LENGTH = 4294967295,\n    HALF_MAX_ARRAY_LENGTH = MAX_ARRAY_LENGTH >>> 1;\n\n/**\n * The base implementation of `_.sortedIndex` and `_.sortedLastIndex` which\n * performs a binary search of `array` to determine the index at which `value`\n * should be inserted into `array` in order to maintain its sort order.\n *\n * @private\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @param {boolean} [retHighest] Specify returning the highest qualified index.\n * @returns {number} Returns the index at which `value` should be inserted\n *  into `array`.\n */\nfunction baseSortedIndex(array, value, retHighest) {\n  var low = 0,\n      high = array ? array.length : low;\n\n  if (typeof value == 'number' && value === value && high <= HALF_MAX_ARRAY_LENGTH) {\n    while (low < high) {\n      var mid = low + high >>> 1,\n          computed = array[mid];\n\n      if (computed !== null && !(0, _isSymbol2.default)(computed) && (retHighest ? computed <= value : computed < value)) {\n        low = mid + 1;\n      } else {\n        high = mid;\n      }\n    }\n    return high;\n  }\n  return (0, _baseSortedIndexBy2.default)(array, value, _identity2.default, retHighest);\n}\n\nexports.default = baseSortedIndex;\n\n/***/ }),\n/* 86 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseSlice = __webpack_require__(34);\n\nvar _baseSlice2 = _interopRequireDefault(_baseSlice);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * The base implementation of methods like `_.dropWhile` and `_.takeWhile`\n * without support for iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to query.\n * @param {Function} predicate The function invoked per iteration.\n * @param {boolean} [isDrop] Specify dropping elements instead of taking them.\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {Array} Returns the slice of `array`.\n */\nfunction baseWhile(array, predicate, isDrop, fromRight) {\n  var length = array.length,\n      index = fromRight ? length : -1;\n\n  while ((fromRight ? index-- : ++index < length) && predicate(array[index], index, array)) {}\n\n  return isDrop ? (0, _baseSlice2.default)(array, fromRight ? 0 : index, fromRight ? index + 1 : length) : (0, _baseSlice2.default)(array, fromRight ? index + 1 : 0, fromRight ? length : index);\n}\n\nexports.default = baseWhile;\n\n/***/ }),\n/* 87 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _isArray = __webpack_require__(11);\n\nvar _isArray2 = _interopRequireDefault(_isArray);\n\nvar _stringToPath = __webpack_require__(479);\n\nvar _stringToPath2 = _interopRequireDefault(_stringToPath);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Casts `value` to a path array if it's not one.\n *\n * @private\n * @param {*} value The value to inspect.\n * @returns {Array} Returns the cast property path array.\n */\nfunction castPath(value) {\n  return (0, _isArray2.default)(value) ? value : (0, _stringToPath2.default)(value);\n}\n\nexports.default = castPath;\n\n/***/ }),\n/* 88 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _isKeyable = __webpack_require__(458);\n\nvar _isKeyable2 = _interopRequireDefault(_isKeyable);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Gets the data for `map`.\n *\n * @private\n * @param {Object} map The map to query.\n * @param {string} key The reference key.\n * @returns {*} Returns the map data.\n */\nfunction getMapData(map, key) {\n  var data = map.__data__;\n  return (0, _isKeyable2.default)(key) ? data[typeof key == 'string' ? 'string' : 'hash'] : data.map;\n}\n\nexports.default = getMapData;\n\n/***/ }),\n/* 89 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * Checks if `value` is a host object in IE < 9.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a host object, else `false`.\n */\nfunction isHostObject(value) {\n  // Many host objects are `Object` objects that can coerce to strings\n  // despite having improperly defined `toString` methods.\n  var result = false;\n  if (value != null && typeof value.toString != 'function') {\n    try {\n      result = !!(value + '');\n    } catch (e) {}\n  }\n  return result;\n}\n\nexports.default = isHostObject;\n\n/***/ }),\n/* 90 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; };\n\nvar _eq = __webpack_require__(52);\n\nvar _eq2 = _interopRequireDefault(_eq);\n\nvar _isArrayLike = __webpack_require__(95);\n\nvar _isArrayLike2 = _interopRequireDefault(_isArrayLike);\n\nvar _isIndex = __webpack_require__(35);\n\nvar _isIndex2 = _interopRequireDefault(_isIndex);\n\nvar _isObject = __webpack_require__(13);\n\nvar _isObject2 = _interopRequireDefault(_isObject);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Checks if the given arguments are from an iteratee call.\n *\n * @private\n * @param {*} value The potential iteratee value argument.\n * @param {*} index The potential iteratee index or key argument.\n * @param {*} object The potential iteratee object argument.\n * @returns {boolean} Returns `true` if the arguments are from an iteratee call,\n *  else `false`.\n */\nfunction isIterateeCall(value, index, object) {\n  if (!(0, _isObject2.default)(object)) {\n    return false;\n  }\n  var type = typeof index === 'undefined' ? 'undefined' : _typeof(index);\n  if (type == 'number' ? (0, _isArrayLike2.default)(object) && (0, _isIndex2.default)(index, object.length) : type == 'string' && index in object) {\n    return (0, _eq2.default)(object[index], value);\n  }\n  return false;\n}\n\nexports.default = isIterateeCall;\n\n/***/ }),\n/* 91 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/**\n * Checks if `value` is likely a prototype object.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a prototype, else `false`.\n */\nfunction isPrototype(value) {\n  var Ctor = value && value.constructor,\n      proto = typeof Ctor == 'function' && Ctor.prototype || objectProto;\n\n  return value === proto;\n}\n\nexports.default = isPrototype;\n\n/***/ }),\n/* 92 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _getNative = __webpack_require__(49);\n\nvar _getNative2 = _interopRequireDefault(_getNative);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/* Built-in method references that are verified to be native. */\nvar nativeCreate = (0, _getNative2.default)(Object, 'create');\n\nexports.default = nativeCreate;\n\n/***/ }),\n/* 93 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * Converts `set` to an array of its values.\n *\n * @private\n * @param {Object} set The set to convert.\n * @returns {Array} Returns the values.\n */\nfunction setToArray(set) {\n  var index = -1,\n      result = Array(set.size);\n\n  set.forEach(function (value) {\n    result[++index] = value;\n  });\n  return result;\n}\n\nexports.default = setToArray;\n\n/***/ }),\n/* 94 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseClone = __webpack_require__(199);\n\nvar _baseClone2 = _interopRequireDefault(_baseClone);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Creates a shallow clone of `value`.\n *\n * **Note:** This method is loosely based on the\n * [structured clone algorithm](https://mdn.io/Structured_clone_algorithm)\n * and supports cloning arrays, array buffers, booleans, date objects, maps,\n * numbers, `Object` objects, regexes, sets, strings, symbols, and typed\n * arrays. The own enumerable properties of `arguments` objects are cloned\n * as plain objects. An empty object is returned for uncloneable values such\n * as error objects, functions, DOM nodes, and WeakMaps.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to clone.\n * @returns {*} Returns the cloned value.\n * @see _.cloneDeep\n * @example\n *\n * var objects = [{ 'a': 1 }, { 'b': 2 }];\n *\n * var shallow = _.clone(objects);\n * console.log(shallow[0] === objects[0]);\n * // => true\n */\nfunction clone(value) {\n  return (0, _baseClone2.default)(value, false, true);\n}\n\nexports.default = clone;\n\n/***/ }),\n/* 95 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _getLength = __webpack_require__(446);\n\nvar _getLength2 = _interopRequireDefault(_getLength);\n\nvar _isFunction = __webpack_require__(148);\n\nvar _isFunction2 = _interopRequireDefault(_isFunction);\n\nvar _isLength = __webpack_require__(96);\n\nvar _isLength2 = _interopRequireDefault(_isLength);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Checks if `value` is array-like. A value is considered array-like if it's\n * not a function and has a `value.length` that's an integer greater than or\n * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is array-like, else `false`.\n * @example\n *\n * _.isArrayLike([1, 2, 3]);\n * // => true\n *\n * _.isArrayLike(document.body.children);\n * // => true\n *\n * _.isArrayLike('abc');\n * // => true\n *\n * _.isArrayLike(_.noop);\n * // => false\n */\nfunction isArrayLike(value) {\n  return value != null && (0, _isLength2.default)((0, _getLength2.default)(value)) && !(0, _isFunction2.default)(value);\n}\n\nexports.default = isArrayLike;\n\n/***/ }),\n/* 96 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/** Used as references for various `Number` constants. */\nvar MAX_SAFE_INTEGER = 9007199254740991;\n\n/**\n * Checks if `value` is a valid array-like length.\n *\n * **Note:** This function is loosely based on\n * [`ToLength`](http://ecma-international.org/ecma-262/6.0/#sec-tolength).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a valid length,\n *  else `false`.\n * @example\n *\n * _.isLength(3);\n * // => true\n *\n * _.isLength(Number.MIN_VALUE);\n * // => false\n *\n * _.isLength(Infinity);\n * // => false\n *\n * _.isLength('3');\n * // => false\n */\nfunction isLength(value) {\n  return typeof value == 'number' && value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;\n}\n\nexports.default = isLength;\n\n/***/ }),\n/* 97 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _getPrototype = __webpack_require__(140);\n\nvar _getPrototype2 = _interopRequireDefault(_getPrototype);\n\nvar _isHostObject = __webpack_require__(89);\n\nvar _isHostObject2 = _interopRequireDefault(_isHostObject);\n\nvar _isObjectLike = __webpack_require__(43);\n\nvar _isObjectLike2 = _interopRequireDefault(_isObjectLike);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** `Object#toString` result references. */\nvar objectTag = '[object Object]';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to resolve the decompiled source of functions. */\nvar funcToString = Function.prototype.toString;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/** Used to infer the `Object` constructor. */\nvar objectCtorString = funcToString.call(Object);\n\n/**\n * Used to resolve the\n * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)\n * of values.\n */\nvar objectToString = objectProto.toString;\n\n/**\n * Checks if `value` is a plain object, that is, an object created by the\n * `Object` constructor or one with a `[[Prototype]]` of `null`.\n *\n * @static\n * @memberOf _\n * @since 0.8.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a plain object,\n *  else `false`.\n * @example\n *\n * function Foo() {\n *   this.a = 1;\n * }\n *\n * _.isPlainObject(new Foo);\n * // => false\n *\n * _.isPlainObject([1, 2, 3]);\n * // => false\n *\n * _.isPlainObject({ 'x': 0, 'y': 0 });\n * // => true\n *\n * _.isPlainObject(Object.create(null));\n * // => true\n */\nfunction isPlainObject(value) {\n  if (!(0, _isObjectLike2.default)(value) || objectToString.call(value) != objectTag || (0, _isHostObject2.default)(value)) {\n    return false;\n  }\n  var proto = (0, _getPrototype2.default)(value);\n  if (proto === null) {\n    return true;\n  }\n  var Ctor = hasOwnProperty.call(proto, 'constructor') && proto.constructor;\n  return typeof Ctor == 'function' && Ctor instanceof Ctor && funcToString.call(Ctor) == objectCtorString;\n}\n\nexports.default = isPlainObject;\n\n/***/ }),\n/* 98 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _arrayFilter = __webpack_require__(82);\n\nvar _arrayFilter2 = _interopRequireDefault(_arrayFilter);\n\nvar _arrayMap = __webpack_require__(26);\n\nvar _arrayMap2 = _interopRequireDefault(_arrayMap);\n\nvar _baseProperty = __webpack_require__(131);\n\nvar _baseProperty2 = _interopRequireDefault(_baseProperty);\n\nvar _baseTimes = __webpack_require__(204);\n\nvar _baseTimes2 = _interopRequireDefault(_baseTimes);\n\nvar _isArrayLikeObject = __webpack_require__(12);\n\nvar _isArrayLikeObject2 = _interopRequireDefault(_isArrayLikeObject);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeMax = Math.max;\n\n/**\n * This method is like `_.zip` except that it accepts an array of grouped\n * elements and creates an array regrouping the elements to their pre-zip\n * configuration.\n *\n * @static\n * @memberOf _\n * @since 1.2.0\n * @category Array\n * @param {Array} array The array of grouped elements to process.\n * @returns {Array} Returns the new array of regrouped elements.\n * @example\n *\n * var zipped = _.zip(['fred', 'barney'], [30, 40], [true, false]);\n * // => [['fred', 30, true], ['barney', 40, false]]\n *\n * _.unzip(zipped);\n * // => [['fred', 'barney'], [30, 40], [true, false]]\n */\nfunction unzip(array) {\n  if (!(array && array.length)) {\n    return [];\n  }\n  var length = 0;\n  array = (0, _arrayFilter2.default)(array, function (group) {\n    if ((0, _isArrayLikeObject2.default)(group)) {\n      length = nativeMax(group.length, length);\n      return true;\n    }\n  });\n  return (0, _baseTimes2.default)(length, function (index) {\n    return (0, _arrayMap2.default)(array, (0, _baseProperty2.default)(index));\n  });\n}\n\nexports.default = unzip;\n\n/***/ }),\n/* 99 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nmodule.exports = function (module) {\n\tif (!module.webpackPolyfill) {\n\t\tmodule.deprecate = function () {};\n\t\tmodule.paths = [];\n\t\t// module.parent = undefined by default\n\t\tif (!module.children) module.children = [];\n\t\tObject.defineProperty(module, \"loaded\", {\n\t\t\tenumerable: true,\n\t\t\tget: function get() {\n\t\t\t\treturn module.l;\n\t\t\t}\n\t\t});\n\t\tObject.defineProperty(module, \"id\", {\n\t\t\tenumerable: true,\n\t\t\tget: function get() {\n\t\t\t\treturn module.i;\n\t\t\t}\n\t\t});\n\t\tmodule.webpackPolyfill = 1;\n\t}\n\treturn module;\n};\n\n/***/ }),\n/* 100 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\nexports.default = getSchemaValidRanges;\n\nvar _treewalker = __webpack_require__(38);\n\nvar _treewalker2 = _interopRequireDefault(_treewalker);\n\nvar _range = __webpack_require__(3);\n\nvar _range2 = _interopRequireDefault(_range);\n\nvar _position = __webpack_require__(1);\n\nvar _position2 = _interopRequireDefault(_position);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Walks through given array of ranges and removes parts of them that are not allowed by passed schema to have the\n * attribute set. This is done by breaking a range in two and omitting the not allowed part.\n *\n * @param {String} attribute Attribute key.\n * @param {Array.<module:engine/model/range~Range>} ranges Ranges to be validated.\n * @param {module:engine/model/schema~Schema} schema Document schema.\n * @returns {Array.<module:engine/model/range~Range>} Ranges without invalid parts.\n */\nfunction getSchemaValidRanges(attribute, ranges, schema) {\n\tvar validRanges = [];\n\n\tvar _iteratorNormalCompletion = true;\n\tvar _didIteratorError = false;\n\tvar _iteratorError = undefined;\n\n\ttry {\n\t\tfor (var _iterator = ranges[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\tvar range = _step.value;\n\n\t\t\tvar walker = new _treewalker2.default({ boundaries: range, mergeCharacters: true });\n\t\t\tvar step = walker.next();\n\n\t\t\tvar last = range.start;\n\t\t\tvar from = range.start;\n\t\t\tvar to = range.end;\n\n\t\t\twhile (!step.done) {\n\t\t\t\tvar name = step.value.item.name || '$text';\n\t\t\t\tvar itemPosition = _position2.default.createBefore(step.value.item);\n\n\t\t\t\tif (!schema.check({ name: name, inside: itemPosition, attributes: attribute })) {\n\t\t\t\t\tif (!from.isEqual(last)) {\n\t\t\t\t\t\tvalidRanges.push(new _range2.default(from, last));\n\t\t\t\t\t}\n\n\t\t\t\t\tfrom = walker.position;\n\t\t\t\t}\n\n\t\t\t\tlast = walker.position;\n\t\t\t\tstep = walker.next();\n\t\t\t}\n\n\t\t\tif (from && !from.isEqual(to)) {\n\t\t\t\tvalidRanges.push(new _range2.default(from, to));\n\t\t\t}\n\t\t}\n\t} catch (err) {\n\t\t_didIteratorError = true;\n\t\t_iteratorError = err;\n\t} finally {\n\t\ttry {\n\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t_iterator.return();\n\t\t\t}\n\t\t} finally {\n\t\t\tif (_didIteratorError) {\n\t\t\t\tthrow _iteratorError;\n\t\t\t}\n\t\t}\n\t}\n\n\treturn validRanges;\n} /**\n   * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n   * For licensing, see LICENSE.md.\n   */\n\n/**\n * @module core/command/helpers/getschemavalidranges\n */\n\n/***/ }),\n/* 101 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.insertElement = insertElement;\nexports.insertText = insertText;\nexports.insertUIElement = insertUIElement;\nexports.setAttribute = setAttribute;\nexports.removeAttribute = removeAttribute;\nexports.wrapItem = wrapItem;\nexports.unwrapItem = unwrapItem;\nexports.wrapRange = wrapRange;\nexports.unwrapRange = unwrapRange;\nexports.remove = remove;\nexports.removeUIElement = removeUIElement;\nexports.eventNameToConsumableType = eventNameToConsumableType;\n\nvar _range = __webpack_require__(3);\n\nvar _range2 = _interopRequireDefault(_range);\n\nvar _element = __webpack_require__(20);\n\nvar _element2 = _interopRequireDefault(_element);\n\nvar _text = __webpack_require__(29);\n\nvar _text2 = _interopRequireDefault(_text);\n\nvar _writer = __webpack_require__(77);\n\nvar _writer2 = _interopRequireDefault(_writer);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Contains {@link module:engine/model/model model} to {@link module:engine/view/view view} converters for\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher}.\n *\n * @module engine/conversion/model-to-view-converters\n */\n\n/**\n * Function factory, creates a converter that converts node insertion changes from the model to the view.\n * The view element that will be added to the view depends on passed parameter. If {@link module:engine/view/element~Element} was passed,\n * it will be cloned and the copy will be inserted. If `Function` is provided, it is passed all the parameters of the\n * dispatcher's {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:insert insert event}.\n * It's expected that the function returns a {@link module:engine/view/element~Element}.\n * The result of the function will be inserted to the view.\n *\n * The converter automatically consumes corresponding value from consumables list, stops the event (see\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher}) and bind model and view elements.\n *\n *\t\tmodelDispatcher.on( 'insert:paragraph', insertElement( new ViewElement( 'p' ) ) );\n *\n *\t\tmodelDispatcher.on(\n *\t\t\t'insert:myElem',\n *\t\t\tinsertElement( ( data, consumable, conversionApi ) => {\n *\t\t\t\tlet myElem = new ViewElement( 'myElem', { myAttr: true }, new ViewText( 'myText' ) );\n *\n *\t\t\t\t// Do something fancy with myElem using data/consumable/conversionApi ...\n *\n *\t\t\t\treturn myElem;\n *\t\t\t}\n *\t\t) );\n *\n * @param {module:engine/view/element~Element|Function} elementCreator View element, or function returning a view element, which\n * will be inserted.\n * @returns {Function} Insert element event converter.\n */\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\nfunction insertElement(elementCreator) {\n  return function (evt, data, consumable, conversionApi) {\n    var viewElement = elementCreator instanceof _element2.default ? elementCreator.clone(true) : elementCreator(data, consumable, conversionApi);\n\n    if (!viewElement) {\n      return;\n    }\n\n    if (!consumable.consume(data.item, 'insert')) {\n      return;\n    }\n\n    var viewPosition = conversionApi.mapper.toViewPosition(data.range.start);\n\n    conversionApi.mapper.bindElements(data.item, viewElement);\n    _writer2.default.insert(viewPosition, viewElement);\n  };\n}\n\n/**\n * Function factory, creates a default model-to-view converter for text insertion changes.\n *\n * The converter automatically consumes corresponding value from consumables list and stops the event (see\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher}).\n *\n *\t\tmodelDispatcher.on( 'insert:$text', insertText() );\n *\n * @returns {Function} Insert text event converter.\n */\nfunction insertText() {\n  return function (evt, data, consumable, conversionApi) {\n    if (!consumable.consume(data.item, 'insert')) {\n      return;\n    }\n\n    var viewPosition = conversionApi.mapper.toViewPosition(data.range.start);\n    var viewText = new _text2.default(data.item.data);\n\n    _writer2.default.insert(viewPosition, viewText);\n  };\n}\n\n/**\n * Function factory, creates a converter that converts marker adding change to the view ui element.\n * The view ui element that will be added to the view depends on passed parameter. See {@link ~insertElement}.\n *\n * **Note:** unlike {@link ~insertElement}, the converter does not bind view element to model, because this converter\n * uses marker as \"model source of data\". This means that view ui element does not have corresponding model element.\n *\n * @param {module:engine/view/uielement~UIElement|Function} elementCreator View ui element, or function returning a view element, which\n * will be inserted.\n * @returns {Function} Insert element event converter.\n */\nfunction insertUIElement(elementCreator) {\n  return function (evt, data, consumable, conversionApi) {\n    var viewElement = elementCreator instanceof _element2.default ? elementCreator.clone(true) : elementCreator(data, consumable, conversionApi);\n\n    if (!viewElement) {\n      return;\n    }\n\n    if (!consumable.consume(data.range, 'addMarker')) {\n      return;\n    }\n\n    var viewPosition = conversionApi.mapper.toViewPosition(data.range.start);\n\n    _writer2.default.insert(viewPosition, viewElement);\n  };\n}\n\n/**\n * Function factory, creates a converter that converts set/change attribute changes from the model to the view. Attributes\n * from model are converted to the view element attributes in the view. You may provide a custom function to generate a\n * key-value attribute pair to add/change. If not provided, model attributes will be converted to view elements attributes\n * on 1-to-1 basis.\n *\n * **Note:** Provided attribute creator should always return the same `key` for given attribute from the model.\n *\n * The converter automatically consumes corresponding value from consumables list and stops the event (see\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher}).\n *\n *\t\tmodelDispatcher.on( 'addAttribute:customAttr:myElem', setAttribute( ( data ) => {\n *\t\t\t// Change attribute key from `customAttr` to `class` in view.\n *\t\t\tconst key = 'class';\n *\t\t\tlet value = data.attributeNewValue;\n *\n *\t\t\t// Force attribute value to 'empty' if the model element is empty.\n *\t\t\tif ( data.item.childCount === 0 ) {\n *\t\t\t\tvalue = 'empty';\n *\t\t\t}\n *\n *\t\t\t// Return key-value pair.\n *\t\t\treturn { key, value };\n *\t\t} ) );\n *\n * @param {Function} [attributeCreator] Function returning an object with two properties: `key` and `value`, which\n * represents attribute key and attribute value to be set on a {@link module:engine/view/element~Element view element}.\n * The function is passed all the parameters of the\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:addAttribute}\n * or {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:changeAttribute} event.\n * @returns {Function} Set/change attribute converter.\n */\nfunction setAttribute(attributeCreator) {\n  attributeCreator = attributeCreator || function (value, key) {\n    return { value: value, key: key };\n  };\n\n  return function (evt, data, consumable, conversionApi) {\n    if (!consumable.consume(data.item, eventNameToConsumableType(evt.name))) {\n      return;\n    }\n\n    var _attributeCreator = attributeCreator(data.attributeNewValue, data.attributeKey, data, consumable, conversionApi),\n        key = _attributeCreator.key,\n        value = _attributeCreator.value;\n\n    conversionApi.mapper.toViewElement(data.item).setAttribute(key, value);\n  };\n}\n\n/**\n * Function factory, creates a converter that converts remove attribute changes from the model to the view. Removes attributes\n * that were converted to the view element attributes in the view. You may provide a custom function to generate a\n * key-value attribute pair to remove. If not provided, model attributes will be removed from view elements on 1-to-1 basis.\n *\n * **Note:** Provided attribute creator should always return the same `key` for given attribute from the model.\n *\n * **Note:** You can use the same attribute creator as in {@link module:engine/conversion/model-to-view-converters~setAttribute}.\n *\n * The converter automatically consumes corresponding value from consumables list and stops the event (see\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher}).\n *\n *\t\tmodelDispatcher.on( 'removeAttribute:customAttr:myElem', removeAttribute( ( data ) => {\n *\t\t\t// Change attribute key from `customAttr` to `class` in view.\n *\t\t\tconst key = 'class';\n *\t\t\tlet value = data.attributeNewValue;\n *\n *\t\t\t// Force attribute value to 'empty' if the model element is empty.\n *\t\t\tif ( data.item.childCount === 0 ) {\n *\t\t\t\tvalue = 'empty';\n *\t\t\t}\n *\n *\t\t\t// Return key-value pair.\n *\t\t\treturn { key, value };\n *\t\t} ) );\n *\n * @param {Function} [attributeCreator] Function returning an object with two properties: `key` and `value`, which\n * represents attribute key and attribute value to be removed from {@link module:engine/view/element~Element view element}.\n * The function is passed all the parameters of the\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:addAttribute addAttribute event}\n * or {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:changeAttribute changeAttribute event}.\n * @returns {Function} Remove attribute converter.\n */\nfunction removeAttribute(attributeCreator) {\n  attributeCreator = attributeCreator || function (value, key) {\n    return { key: key };\n  };\n\n  return function (evt, data, consumable, conversionApi) {\n    if (!consumable.consume(data.item, eventNameToConsumableType(evt.name))) {\n      return;\n    }\n\n    var _attributeCreator2 = attributeCreator(data.attributeOldValue, data.attributeKey, data, consumable, conversionApi),\n        key = _attributeCreator2.key;\n\n    conversionApi.mapper.toViewElement(data.item).removeAttribute(key);\n  };\n}\n\n/**\n * Function factory, creates a converter that converts set/change attribute changes from the model to the view. In this case,\n * model attributes are converted to a view element that will be wrapping view nodes which corresponding model nodes had\n * the attribute set. This is useful for attributes like `bold`, which may be set on text nodes in model but are\n * represented as an element in the view:\n *\n *\t\t[paragraph]              MODEL ====> VIEW        <p>\n *\t\t\t|- a {bold: true}                             |- <b>\n *\t\t\t|- b {bold: true}                             |   |- ab\n *\t\t\t|- c                                          |- c\n *\n * The wrapping node depends on passed parameter. If {@link module:engine/view/element~Element} was passed, it will be cloned and\n * the copy will become the wrapping element. If `Function` is provided, it is passed attribute value and then all the parameters of the\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:addAttribute addAttribute event}.\n * It's expected that the function returns a {@link module:engine/view/element~Element}.\n * The result of the function will be the wrapping element.\n * When provided `Function` does not return element, then will be no conversion.\n *\n * The converter automatically consumes corresponding value from consumables list, stops the event (see\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher}).\n *\n *\t\tmodelDispatcher.on( 'addAttribute:bold', wrapItem( new ViewAttributeElement( 'strong' ) ) );\n *\n * @param {module:engine/view/element~Element|Function} elementCreator View element, or function returning a view element, which will\n * be used for wrapping.\n * @returns {Function} Set/change attribute converter.\n */\nfunction wrapItem(elementCreator) {\n  return function (evt, data, consumable, conversionApi) {\n    var viewElement = elementCreator instanceof _element2.default ? elementCreator.clone(true) : elementCreator(data.attributeNewValue, data, consumable, conversionApi);\n\n    if (!viewElement) {\n      return;\n    }\n\n    if (!consumable.consume(data.item, eventNameToConsumableType(evt.name))) {\n      return;\n    }\n\n    var viewRange = conversionApi.mapper.toViewRange(data.range);\n\n    // If this is a change event (because old value is not empty) and the creator is a function (so\n    // it may create different view elements basing on attribute value) we have to create\n    // view element basing on old value and unwrap it before wrapping with a newly created view element.\n    if (data.attributeOldValue !== null && !(elementCreator instanceof _element2.default)) {\n      var oldViewElement = elementCreator(data.attributeOldValue, data, consumable, conversionApi);\n      viewRange = _writer2.default.unwrap(viewRange, oldViewElement);\n    }\n\n    _writer2.default.wrap(viewRange, viewElement);\n  };\n}\n\n/**\n * Function factory, creates a converter that converts remove attribute changes from the model to the view. It assumes, that\n * attributes from model were converted to elements in the view. This converter will unwrap view nodes from corresponding\n * view element if given attribute was removed.\n *\n * The view element type that will be unwrapped depends on passed parameter.\n * If {@link module:engine/view/element~Element} was passed, it will be used to look for similar element in the view for unwrapping.\n * If `Function` is provided, it is passed all the parameters of the\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:addAttribute addAttribute event}.\n * It's expected that the function returns a {@link module:engine/view/element~Element}.\n * The result of the function will be used to look for similar element in the view for unwrapping.\n *\n * The converter automatically consumes corresponding value from consumables list, stops the event (see\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher}) and bind model and view elements.\n *\n *\t\tmodelDispatcher.on( 'removeAttribute:bold', unwrapItem( new ViewAttributeElement( 'strong' ) ) );\n *\n * @see module:engine/conversion/model-to-view-converters~wrapItem\n * @param {module:engine/view/element~Element|Function} elementCreator View element, or function returning a view element, which will\n * be used for unwrapping.\n * @returns {Function} Remove attribute converter.\n */\nfunction unwrapItem(elementCreator) {\n  return function (evt, data, consumable, conversionApi) {\n    var viewElement = elementCreator instanceof _element2.default ? elementCreator.clone(true) : elementCreator(data.attributeOldValue, data, consumable, conversionApi);\n\n    if (!viewElement) {\n      return;\n    }\n\n    if (!consumable.consume(data.item, eventNameToConsumableType(evt.name))) {\n      return;\n    }\n\n    var viewRange = conversionApi.mapper.toViewRange(data.range);\n\n    _writer2.default.unwrap(viewRange, viewElement);\n  };\n}\n\n/**\n * Function factory, creates a converter that wraps model range.\n *\n * In contrary to {@link module:engine/conversion/model-to-view-converters~wrapItem}, this converter's input is a\n * {@link module:engine/model/range~Range model range} (not changed model item). The model range is mapped\n * to {@link module:engine/view/range~Range view range} and then, view items within that view range are wrapped in a\n * {@link module:engine/view/attributeelement~AttributeElement view attribute element}. Note, that `elementCreator`\n * function of this converter takes different parameters that `elementCreator` of `wrapItem`.\n *\n * Let's assume following model and view. `{}` represents a range that is added as a marker with `searchResult` name.\n * The range represents a result of search `ab` string in the model document. The range has to be visualized in view.\n *\n *\t\t[paragraph]              MODEL ====> VIEW        <p>\n *\t\t\t|- {a                                         |- <span class=\"searchResult\">\n *\t\t\t|-  b}                                        |   |- ab\n *\t\t\t|-  c                                         |- c\n *\n * The wrapping node depends on passed parameter. If {@link module:engine/view/attributeelement~AttributeElement} was passed, it\n * will be cloned and the copy will become the wrapping element. If `Function` is provided, it is passed all the parameters of the\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:addMarker addMarker event}. It's expected\n * that the function returns a {@link module:engine/view/attributeelement~AttributeElement}. The result of the function will be the\n * wrapping element. When provided `Function` does not return element, then will be no conversion.\n *\n * The converter automatically consumes corresponding value from consumables list, stops the event (see\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher}).\n *\n *\t\tmodelDispatcher.on( 'addMarker:searchResult', wrapRange( new ViewAttributeElement( 'span', { class: 'searchResult' } ) ) );\n *\n * @param {module:engine/view/attributeelement~AttributeElement|Function} elementCreator View attribute element, or function returning\n * a view attribute element, which will be used for wrapping.\n * @returns {Function} Wrap range converter.\n */\nfunction wrapRange(elementCreator) {\n  return function (evt, data, consumable, conversionApi) {\n    var viewElement = elementCreator instanceof _element2.default ? elementCreator.clone(true) : elementCreator(data, consumable, conversionApi);\n\n    if (!viewElement) {\n      return;\n    }\n\n    if (!consumable.consume(data.range, 'addMarker')) {\n      return;\n    }\n\n    var viewRange = conversionApi.mapper.toViewRange(data.range);\n    var flatViewRanges = _writer2.default.breakViewRangePerContainer(viewRange);\n\n    var _iteratorNormalCompletion = true;\n    var _didIteratorError = false;\n    var _iteratorError = undefined;\n\n    try {\n      for (var _iterator = flatViewRanges[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n        var range = _step.value;\n\n        _writer2.default.wrap(range, viewElement);\n      }\n    } catch (err) {\n      _didIteratorError = true;\n      _iteratorError = err;\n    } finally {\n      try {\n        if (!_iteratorNormalCompletion && _iterator.return) {\n          _iterator.return();\n        }\n      } finally {\n        if (_didIteratorError) {\n          throw _iteratorError;\n        }\n      }\n    }\n  };\n}\n\n/**\n * Function factory, creates a converter that converts removing of a model marker to view attribute element.\n * This converter will unwrap view nodes from corresponding view range.\n *\n * The view element that will be unwrapped depends on passed parameter. If {@link module:engine/view/attributeelement~AttributeElement}\n * was passed, it will be used to look for similar element in the view for unwrapping. If `Function` is provided, it is passed all\n * the parameters of the\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:removeMarker removeMarker event}.\n * It's expected that the function returns a {@link module:engine/view/attributeelement~AttributeElement}. The result of\n * the function will be used to look for similar element in the view for unwrapping.\n *\n * The converter automatically consumes corresponding value from consumables list, stops the event (see\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher}) and bind model and view elements.\n *\n *\t\tmodelDispatcher.on( 'removeMarker:searchResult', unwrapRange( new ViewAttributeElement( 'span', { class: 'searchResult' } ) ) );\n *\n * @see module:engine/conversion/model-to-view-converters~wrapRange\n * @param {module:engine/view/attributeelement~AttributeElement|Function} elementCreator View attribute element, or function returning\n * a view attribute element, which will be used for unwrapping.\n * @returns {Function} Unwrap range converter.\n */\nfunction unwrapRange(elementCreator) {\n  return function (evt, data, consumable, conversionApi) {\n    var viewElement = elementCreator instanceof _element2.default ? elementCreator.clone(true) : elementCreator(data, consumable, conversionApi);\n\n    if (!viewElement) {\n      return;\n    }\n\n    if (!consumable.consume(data.range, 'removeMarker')) {\n      return;\n    }\n\n    var viewRange = conversionApi.mapper.toViewRange(data.range);\n    var flatViewRanges = _writer2.default.breakViewRangePerContainer(viewRange);\n\n    var _iteratorNormalCompletion2 = true;\n    var _didIteratorError2 = false;\n    var _iteratorError2 = undefined;\n\n    try {\n      for (var _iterator2 = flatViewRanges[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {\n        var range = _step2.value;\n\n        _writer2.default.unwrap(range, viewElement);\n      }\n    } catch (err) {\n      _didIteratorError2 = true;\n      _iteratorError2 = err;\n    } finally {\n      try {\n        if (!_iteratorNormalCompletion2 && _iterator2.return) {\n          _iterator2.return();\n        }\n      } finally {\n        if (_didIteratorError2) {\n          throw _iteratorError2;\n        }\n      }\n    }\n  };\n}\n\n/**\n * Function factory, creates a default model-to-view converter for node remove changes.\n *\n *\t\tmodelDispatcher.on( 'remove', remove() );\n *\n * @returns {Function} Remove event converter.\n */\nfunction remove() {\n  return function (evt, data, consumable, conversionApi) {\n    if (!consumable.consume(data.item, 'remove')) {\n      return;\n    }\n\n    var modelRange = _range2.default.createFromPositionAndShift(data.sourcePosition, data.item.offsetSize);\n    var viewRange = conversionApi.mapper.toViewRange(modelRange);\n\n    _writer2.default.remove(viewRange.getTrimmed());\n    conversionApi.mapper.unbindModelElement(data.item);\n  };\n}\n\n/**\n * Function factory, creates a default model-to-view converter for removing {@link module:engine/view/uielement~UIElement ui element}\n * basing on marker remove change.\n *\n * @param {module:engine/view/uielement~UIElement|Function} elementCreator View ui element, or function returning\n * a view ui element, which will be used as a pattern when look for element to remove at the marker start position.\n * @returns {Function} Remove ui element converter.\n */\nfunction removeUIElement(elementCreator) {\n  return function (evt, data, consumable, conversionApi) {\n    var viewElement = elementCreator instanceof _element2.default ? elementCreator.clone(true) : elementCreator(data, consumable, conversionApi);\n\n    if (!viewElement) {\n      return;\n    }\n\n    if (!consumable.consume(data.range, 'removeMarker')) {\n      return;\n    }\n\n    var viewRange = conversionApi.mapper.toViewRange(data.range);\n\n    _writer2.default.clear(viewRange.getEnlarged(), viewElement);\n  };\n}\n\n/**\n * Returns the consumable type that is to be consumed in an event, basing on that event name.\n *\n * @param {String} evtName Event name.\n * @returns {String} Consumable type.\n */\nfunction eventNameToConsumableType(evtName) {\n  var parts = evtName.split(':');\n\n  return parts[0] + ':' + parts[1];\n}\n\n/***/ }),\n/* 102 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _delta = __webpack_require__(19);\n\nvar _delta2 = _interopRequireDefault(_delta);\n\nvar _deltafactory = __webpack_require__(17);\n\nvar _deltafactory2 = _interopRequireDefault(_deltafactory);\n\nvar _removedelta = __webpack_require__(105);\n\nvar _removedelta2 = _interopRequireDefault(_removedelta);\n\nvar _batch = __webpack_require__(16);\n\nvar _insertoperation = __webpack_require__(36);\n\nvar _insertoperation2 = _interopRequireDefault(_insertoperation);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module engine/model/delta/insertdelta\n */\n\n/**\n * @classdesc\n * To provide specific OT behavior and better collisions solving, the {@link module:engine/model/batch~Batch#insert Batch#insert} method\n * uses the `InsertDelta` class which inherits from the `Delta` class and may overwrite some methods.\n */\nvar InsertDelta = function (_Delta) {\n\t_inherits(InsertDelta, _Delta);\n\n\tfunction InsertDelta() {\n\t\t_classCallCheck(this, InsertDelta);\n\n\t\treturn _possibleConstructorReturn(this, (InsertDelta.__proto__ || Object.getPrototypeOf(InsertDelta)).apply(this, arguments));\n\t}\n\n\t_createClass(InsertDelta, [{\n\t\tkey: 'type',\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tget: function get() {\n\t\t\treturn 'insert';\n\t\t}\n\n\t\t/**\n   * Position where the delta inserts nodes or `null` if there are no operations in the delta.\n   *\n   * @readonly\n   * @type {module:engine/model/position~Position|null}\n   */\n\n\t}, {\n\t\tkey: 'position',\n\t\tget: function get() {\n\t\t\treturn this._insertOperation ? this._insertOperation.position : null;\n\t\t}\n\n\t\t/**\n   * Node list containing all the nodes inserted by the delta or `null` if there are no operations in the delta.\n   *\n   * @readonly\n   * @type {module:engine/model/nodelist~NodeList|null}\n   */\n\n\t}, {\n\t\tkey: 'nodes',\n\t\tget: function get() {\n\t\t\treturn this._insertOperation ? this._insertOperation.nodes : null;\n\t\t}\n\n\t\t/**\n   * Insert operation that is saved in this delta or `null` if there are no operations in the delta.\n   *\n   * @readonly\n   * @protected\n   * @type {module:engine/model/operation/insertoperation~InsertOperation|null}\n   */\n\n\t}, {\n\t\tkey: '_insertOperation',\n\t\tget: function get() {\n\t\t\treturn this.operations[0] || null;\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: '_reverseDeltaClass',\n\t\tget: function get() {\n\t\t\treturn _removedelta2.default;\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}], [{\n\t\tkey: 'className',\n\t\tget: function get() {\n\t\t\treturn 'engine.model.delta.InsertDelta';\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: '_priority',\n\t\tget: function get() {\n\t\t\treturn 20;\n\t\t}\n\t}]);\n\n\treturn InsertDelta;\n}(_delta2.default);\n\n/**\n * Inserts a node or nodes at the given position.\n *\n * @chainable\n * @method module:engine/model/batch~Batch#insert\n * @param {module:engine/model/position~Position} position Position of insertion.\n * @param {module:engine/model/node~NodeSet} nodes The list of nodes to be inserted.\n */\n\n\nexports.default = InsertDelta;\n(0, _batch.register)('insert', function (position, nodes) {\n\tvar delta = new InsertDelta();\n\tvar insert = new _insertoperation2.default(position, nodes, this.document.version);\n\n\tthis.addDelta(delta);\n\tdelta.addOperation(insert);\n\tthis.document.applyOperation(insert);\n\n\treturn this;\n});\n\n_deltafactory2.default.register(InsertDelta);\n\n/***/ }),\n/* 103 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if (\"value\" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };\n\nvar _delta = __webpack_require__(19);\n\nvar _delta2 = _interopRequireDefault(_delta);\n\nvar _deltafactory = __webpack_require__(17);\n\nvar _deltafactory2 = _interopRequireDefault(_deltafactory);\n\nvar _splitdelta = __webpack_require__(106);\n\nvar _splitdelta2 = _interopRequireDefault(_splitdelta);\n\nvar _batch = __webpack_require__(16);\n\nvar _position = __webpack_require__(1);\n\nvar _position2 = _interopRequireDefault(_position);\n\nvar _element = __webpack_require__(5);\n\nvar _element2 = _interopRequireDefault(_element);\n\nvar _removeoperation = __webpack_require__(37);\n\nvar _removeoperation2 = _interopRequireDefault(_removeoperation);\n\nvar _moveoperation = __webpack_require__(27);\n\nvar _moveoperation2 = _interopRequireDefault(_moveoperation);\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module engine/model/delta/mergedelta\n */\n\n/**\n * @classdesc\n * To provide specific OT behavior and better collisions solving, {@link module:engine/model/batch~Batch#merge} method\n * uses the `MergeDelta` class which inherits from the `Delta` class and may overwrite some methods.\n */\nvar MergeDelta = function (_Delta) {\n\t_inherits(MergeDelta, _Delta);\n\n\tfunction MergeDelta() {\n\t\t_classCallCheck(this, MergeDelta);\n\n\t\treturn _possibleConstructorReturn(this, (MergeDelta.__proto__ || Object.getPrototypeOf(MergeDelta)).apply(this, arguments));\n\t}\n\n\t_createClass(MergeDelta, [{\n\t\tkey: 'getReversed',\n\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tvalue: function getReversed() {\n\t\t\tvar delta = _get(MergeDelta.prototype.__proto__ || Object.getPrototypeOf(MergeDelta.prototype), 'getReversed', this).call(this);\n\n\t\t\tif (delta.operations.length > 0) {\n\t\t\t\tdelta.operations[1].isSticky = false;\n\t\t\t}\n\n\t\t\treturn delta;\n\t\t}\n\n\t\t/**\n   * Operation in this delta that removes the node after merge position (which will be empty at that point) or\n   * `null` if the delta has no operations. Note, that after {@link module:engine/model/delta/transform~transform transformation}\n   * this might be an instance of {@link module:engine/model/operation/moveoperation~MoveOperation} instead of\n   * {@link module:engine/model/operation/removeoperation~RemoveOperation}.\n   *\n   * @readonly\n   * @protected\n   * @type {module:engine/model/operation/moveoperation~MoveOperation|null}\n   */\n\n\t}, {\n\t\tkey: 'type',\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tget: function get() {\n\t\t\treturn 'merge';\n\t\t}\n\n\t\t/**\n   * Position between to merged nodes or `null` if the delta has no operations.\n   *\n   * @readonly\n   * @type {module:engine/model/position~Position|null}\n   */\n\n\t}, {\n\t\tkey: 'position',\n\t\tget: function get() {\n\t\t\treturn this._removeOperation ? this._removeOperation.sourcePosition : null;\n\t\t}\n\t}, {\n\t\tkey: '_removeOperation',\n\t\tget: function get() {\n\t\t\treturn this.operations[1] || null;\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: '_reverseDeltaClass',\n\t\tget: function get() {\n\t\t\treturn _splitdelta2.default;\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}], [{\n\t\tkey: 'className',\n\t\tget: function get() {\n\t\t\treturn 'engine.model.delta.MergeDelta';\n\t\t}\n\t}]);\n\n\treturn MergeDelta;\n}(_delta2.default);\n\n/**\n * Merges two siblings at the given position.\n *\n * Node before and after the position have to be an element. Otherwise `batch-merge-no-element-before` or\n * `batch-merge-no-element-after` error will be thrown.\n *\n * @chainable\n * @method module:engine/model/batch~Batch#merge\n * @param {module:engine/model/position~Position} position Position of merge.\n */\n\n\nexports.default = MergeDelta;\n(0, _batch.register)('merge', function (position) {\n\tvar delta = new MergeDelta();\n\tthis.addDelta(delta);\n\n\tvar nodeBefore = position.nodeBefore;\n\tvar nodeAfter = position.nodeAfter;\n\n\tif (!(nodeBefore instanceof _element2.default)) {\n\t\t/**\n   * Node before merge position must be an element.\n   *\n   * @error batch-merge-no-element-before\n   */\n\t\tthrow new _ckeditorerror2.default('batch-merge-no-element-before: Node before merge position must be an element.');\n\t}\n\n\tif (!(nodeAfter instanceof _element2.default)) {\n\t\t/**\n   * Node after merge position must be an element.\n   *\n   * @error batch-merge-no-element-after\n   */\n\t\tthrow new _ckeditorerror2.default('batch-merge-no-element-after: Node after merge position must be an element.');\n\t}\n\n\tvar positionAfter = _position2.default.createFromParentAndOffset(nodeAfter, 0);\n\tvar positionBefore = _position2.default.createFromParentAndOffset(nodeBefore, nodeBefore.maxOffset);\n\n\tvar move = new _moveoperation2.default(positionAfter, nodeAfter.maxOffset, positionBefore, this.document.version);\n\tmove.isSticky = true;\n\tdelta.addOperation(move);\n\tthis.document.applyOperation(move);\n\n\tvar remove = new _removeoperation2.default(position, 1, this.document.version);\n\tdelta.addOperation(remove);\n\tthis.document.applyOperation(remove);\n\n\treturn this;\n});\n\n_deltafactory2.default.register(MergeDelta);\n\n/***/ }),\n/* 104 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _delta = __webpack_require__(19);\n\nvar _delta2 = _interopRequireDefault(_delta);\n\nvar _deltafactory = __webpack_require__(17);\n\nvar _deltafactory2 = _interopRequireDefault(_deltafactory);\n\nvar _batch = __webpack_require__(16);\n\nvar _moveoperation = __webpack_require__(27);\n\nvar _moveoperation2 = _interopRequireDefault(_moveoperation);\n\nvar _position = __webpack_require__(1);\n\nvar _position2 = _interopRequireDefault(_position);\n\nvar _range = __webpack_require__(3);\n\nvar _range2 = _interopRequireDefault(_range);\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module engine/model/delta/movedelta\n */\n\n/**\n * @classdesc\n * To provide specific OT behavior and better collisions solving, {@link module:engine/model/batch~Batch#move} method\n * uses the `MoveDelta` class which inherits from the `Delta` class and may overwrite some methods.\n */\nvar MoveDelta = function (_Delta) {\n\t_inherits(MoveDelta, _Delta);\n\n\tfunction MoveDelta() {\n\t\t_classCallCheck(this, MoveDelta);\n\n\t\treturn _possibleConstructorReturn(this, (MoveDelta.__proto__ || Object.getPrototypeOf(MoveDelta)).apply(this, arguments));\n\t}\n\n\t_createClass(MoveDelta, [{\n\t\tkey: 'type',\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tget: function get() {\n\t\t\treturn 'move';\n\t\t}\n\n\t\t/**\n   * Offset size of moved range or `null` if there are no operations in the delta.\n   *\n   * @type {Number|null}\n   */\n\n\t}, {\n\t\tkey: 'howMany',\n\t\tget: function get() {\n\t\t\treturn this._moveOperation ? this._moveOperation.howMany : null;\n\t\t}\n\n\t\t/**\n   * {@link module:engine/model/delta/movedelta~MoveDelta#_moveOperation Move operation}\n   * {@link module:engine/model/operation/moveoperation~MoveOperation#sourcePosition source position} or `null` if there are\n   * no operations in the delta.\n   *\n   * @type {module:engine/model/position~Position|null}\n   */\n\n\t}, {\n\t\tkey: 'sourcePosition',\n\t\tget: function get() {\n\t\t\treturn this._moveOperation ? this._moveOperation.sourcePosition : null;\n\t\t}\n\n\t\t/**\n   * {@link module:engine/model/delta/movedelta~MoveDelta#_moveOperation Move operation}\n   * {@link module:engine/model/operation/moveoperation~MoveOperation#targetPosition target position} or `null` if there are\n   * no operations in the delta.\n   *\n   * @type {module:engine/model/position~Position|null}\n   */\n\n\t}, {\n\t\tkey: 'targetPosition',\n\t\tget: function get() {\n\t\t\treturn this._moveOperation ? this._moveOperation.targetPosition : null;\n\t\t}\n\n\t\t/**\n   * {@link module:engine/model/delta/movedelta~MoveDelta#_moveOperation Move operation} that is saved in this delta or `null`\n   * if there are no operations in the delta.\n   *\n   * @protected\n   * @type {module:engine/model/operation/moveoperation~MoveOperation|null}\n   */\n\n\t}, {\n\t\tkey: '_moveOperation',\n\t\tget: function get() {\n\t\t\treturn this.operations[0] || null;\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: '_reverseDeltaClass',\n\t\tget: function get() {\n\t\t\treturn MoveDelta;\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}], [{\n\t\tkey: 'className',\n\t\tget: function get() {\n\t\t\treturn 'engine.model.delta.MoveDelta';\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: '_priority',\n\t\tget: function get() {\n\t\t\treturn 20;\n\t\t}\n\t}]);\n\n\treturn MoveDelta;\n}(_delta2.default);\n\nexports.default = MoveDelta;\n\n\nfunction addMoveOperation(batch, delta, sourcePosition, howMany, targetPosition) {\n\tvar operation = new _moveoperation2.default(sourcePosition, howMany, targetPosition, batch.document.version);\n\tdelta.addOperation(operation);\n\tbatch.document.applyOperation(operation);\n}\n\n/**\n * Moves given {@link module:engine/model/item~Item model item} or given range to target position.\n *\n * @chainable\n * @method module:engine/model/batch~Batch#move\n * @param {module:engine/model/item~Item|module:engine/model/range~Range} itemOrRange Model item or range of nodes to move.\n * @param {module:engine/model/position~Position} targetPosition Position where moved nodes will be inserted.\n */\n(0, _batch.register)('move', function (itemOrRange, targetPosition) {\n\tvar delta = new MoveDelta();\n\tthis.addDelta(delta);\n\n\tif (itemOrRange instanceof _range2.default) {\n\t\tif (!itemOrRange.isFlat) {\n\t\t\t/**\n    * Range to move is not flat.\n    *\n    * @error batch-move-range-not-flat\n    */\n\t\t\tthrow new _ckeditorerror2.default('batch-move-range-not-flat: Range to move is not flat.');\n\t\t}\n\n\t\taddMoveOperation(this, delta, itemOrRange.start, itemOrRange.end.offset - itemOrRange.start.offset, targetPosition);\n\t} else {\n\t\taddMoveOperation(this, delta, _position2.default.createBefore(itemOrRange), 1, targetPosition);\n\t}\n\n\treturn this;\n});\n\n_deltafactory2.default.register(MoveDelta);\n\n/***/ }),\n/* 105 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _movedelta = __webpack_require__(104);\n\nvar _movedelta2 = _interopRequireDefault(_movedelta);\n\nvar _batch = __webpack_require__(16);\n\nvar _deltafactory = __webpack_require__(17);\n\nvar _deltafactory2 = _interopRequireDefault(_deltafactory);\n\nvar _removeoperation = __webpack_require__(37);\n\nvar _removeoperation2 = _interopRequireDefault(_removeoperation);\n\nvar _position = __webpack_require__(1);\n\nvar _position2 = _interopRequireDefault(_position);\n\nvar _range = __webpack_require__(3);\n\nvar _range2 = _interopRequireDefault(_range);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module engine/model/delta/removedelta\n */\n\n/**\n * @classdesc\n * To provide specific OT behavior and better collisions solving, {@link module:engine/model/batch~Batch#remove} method\n * uses the `RemoveDelta` class which inherits from the `Delta` class and may overwrite some methods.\n */\nvar RemoveDelta = function (_MoveDelta) {\n\t_inherits(RemoveDelta, _MoveDelta);\n\n\tfunction RemoveDelta() {\n\t\t_classCallCheck(this, RemoveDelta);\n\n\t\treturn _possibleConstructorReturn(this, (RemoveDelta.__proto__ || Object.getPrototypeOf(RemoveDelta)).apply(this, arguments));\n\t}\n\n\t_createClass(RemoveDelta, null, [{\n\t\tkey: 'className',\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tget: function get() {\n\t\t\treturn 'engine.model.delta.RemoveDelta';\n\t\t}\n\t}]);\n\n\treturn RemoveDelta;\n}(_movedelta2.default);\n\nexports.default = RemoveDelta;\n\n\nfunction addRemoveOperation(batch, delta, position, howMany) {\n\tvar operation = new _removeoperation2.default(position, howMany, batch.document.version);\n\tdelta.addOperation(operation);\n\tbatch.document.applyOperation(operation);\n}\n\n/**\n * Removes given {@link module:engine/model/item~Item model item} or given range.\n *\n * @chainable\n * @method module:engine/model/batch~Batch#remove\n * @param {module:engine/model/item~Item|module:engine/model/range~Range} itemOrRange Model item or range to remove.\n */\n(0, _batch.register)('remove', function (itemOrRange) {\n\tvar delta = new RemoveDelta();\n\tthis.addDelta(delta);\n\n\tif (itemOrRange instanceof _range2.default) {\n\t\t// The array is reversed, so the ranges are correct and do not have to be updated.\n\t\tvar ranges = itemOrRange.getMinimalFlatRanges().reverse();\n\n\t\tvar _iteratorNormalCompletion = true;\n\t\tvar _didIteratorError = false;\n\t\tvar _iteratorError = undefined;\n\n\t\ttry {\n\t\t\tfor (var _iterator = ranges[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\tvar flat = _step.value;\n\n\t\t\t\taddRemoveOperation(this, delta, flat.start, flat.end.offset - flat.start.offset);\n\t\t\t}\n\t\t} catch (err) {\n\t\t\t_didIteratorError = true;\n\t\t\t_iteratorError = err;\n\t\t} finally {\n\t\t\ttry {\n\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t_iterator.return();\n\t\t\t\t}\n\t\t\t} finally {\n\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t} else {\n\t\taddRemoveOperation(this, delta, _position2.default.createBefore(itemOrRange), 1);\n\t}\n\n\treturn this;\n});\n\n_deltafactory2.default.register(RemoveDelta);\n\n/***/ }),\n/* 106 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if (\"value\" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };\n\nvar _delta = __webpack_require__(19);\n\nvar _delta2 = _interopRequireDefault(_delta);\n\nvar _deltafactory = __webpack_require__(17);\n\nvar _deltafactory2 = _interopRequireDefault(_deltafactory);\n\nvar _batch = __webpack_require__(16);\n\nvar _position = __webpack_require__(1);\n\nvar _position2 = _interopRequireDefault(_position);\n\nvar _element = __webpack_require__(5);\n\nvar _element2 = _interopRequireDefault(_element);\n\nvar _insertoperation = __webpack_require__(36);\n\nvar _insertoperation2 = _interopRequireDefault(_insertoperation);\n\nvar _moveoperation = __webpack_require__(27);\n\nvar _moveoperation2 = _interopRequireDefault(_moveoperation);\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nvar _mergedelta = __webpack_require__(103);\n\nvar _mergedelta2 = _interopRequireDefault(_mergedelta);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module engine/model/delta/splitdelta\n */\n\n/**\n * @classdesc\n * To provide specific OT behavior and better collisions solving, the {@link module:engine/model/batch~Batch#split} method\n * uses `SplitDelta` class which inherits from the `Delta` class and may overwrite some methods.\n */\nvar SplitDelta = function (_Delta) {\n\t_inherits(SplitDelta, _Delta);\n\n\tfunction SplitDelta() {\n\t\t_classCallCheck(this, SplitDelta);\n\n\t\treturn _possibleConstructorReturn(this, (SplitDelta.__proto__ || Object.getPrototypeOf(SplitDelta)).apply(this, arguments));\n\t}\n\n\t_createClass(SplitDelta, [{\n\t\tkey: 'getReversed',\n\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tvalue: function getReversed() {\n\t\t\tvar delta = _get(SplitDelta.prototype.__proto__ || Object.getPrototypeOf(SplitDelta.prototype), 'getReversed', this).call(this);\n\n\t\t\tif (delta.operations.length > 0) {\n\t\t\t\tdelta.operations[0].isSticky = true;\n\t\t\t}\n\n\t\t\treturn delta;\n\t\t}\n\n\t\t/**\n   * Operation in the delta that adds to model an element into which split nodes will be moved, or `null` if\n   * there are no operations in the delta.\n   *\n   * Most commonly this will be {@link module:engine/model/operation/insertoperation~InsertOperation an insert operation},\n   * as `SplitDelta` has to create a new node. If `SplitDelta` was created through\n   * {@link module:engine/model/delta/delta~Delta#getReversed reversing}\n   * a {@link module:engine/model/delta/mergedelta~MergeDelta merge delta},\n   * this will be a {@link module:engine/model/operation/reinsertoperation~ReinsertOperation reinsert operation},\n   * as we will want to re-insert the exact element that was removed by that merge delta.\n   *\n   * @protected\n   * @type {module:engine/model/operation/insertoperation~InsertOperation|\n   * module:engine/model/operation/reinsertoperation~ReinsertOperation|null}\n   */\n\n\t}, {\n\t\tkey: 'type',\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tget: function get() {\n\t\t\treturn 'split';\n\t\t}\n\n\t\t/**\n   * Position of split or `null` if there are no operations in the delta.\n   *\n   * @type {module:engine/model/position~Position|null}\n   */\n\n\t}, {\n\t\tkey: 'position',\n\t\tget: function get() {\n\t\t\treturn this._moveOperation ? this._moveOperation.sourcePosition : null;\n\t\t}\n\t}, {\n\t\tkey: '_cloneOperation',\n\t\tget: function get() {\n\t\t\treturn this.operations[0] || null;\n\t\t}\n\n\t\t/**\n   * Operation in the delta that moves model items, that are after split position, to their new parent or `null`\n   * if there are no operations in the delta.\n   *\n   * @protected\n   * @type {module:engine/model/operation/moveoperation~MoveOperation|null}\n   */\n\n\t}, {\n\t\tkey: '_moveOperation',\n\t\tget: function get() {\n\t\t\treturn this.operations[1] || null;\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: '_reverseDeltaClass',\n\t\tget: function get() {\n\t\t\treturn _mergedelta2.default;\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}], [{\n\t\tkey: 'className',\n\t\tget: function get() {\n\t\t\treturn 'engine.model.delta.SplitDelta';\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: '_priority',\n\t\tget: function get() {\n\t\t\treturn 5;\n\t\t}\n\t}]);\n\n\treturn SplitDelta;\n}(_delta2.default);\n\n/**\n * Splits an element at the given position.\n *\n * The element cannot be a root element, as root element cannot be split. The `batch-split-root` error will be thrown if\n * you try to split the root element.\n *\n * @chainable\n * @method module:engine/model/batch~Batch#split\n * @param {module:engine/model/position~Position} position Position of split.\n */\n\n\nexports.default = SplitDelta;\n(0, _batch.register)('split', function (position) {\n\tvar delta = new SplitDelta();\n\tthis.addDelta(delta);\n\n\tvar splitElement = position.parent;\n\n\tif (!splitElement.parent) {\n\t\t/**\n   * Root element can not be split.\n   *\n   * @error batch-split-root\n   */\n\t\tthrow new _ckeditorerror2.default('batch-split-root: Root element can not be split.');\n\t}\n\n\tvar copy = new _element2.default(splitElement.name, splitElement.getAttributes());\n\n\tvar insert = new _insertoperation2.default(_position2.default.createAfter(splitElement), copy, this.document.version);\n\n\tdelta.addOperation(insert);\n\tthis.document.applyOperation(insert);\n\n\tvar move = new _moveoperation2.default(position, splitElement.maxOffset - position.offset, _position2.default.createFromParentAndOffset(copy, 0), this.document.version);\n\tmove.isSticky = true;\n\n\tdelta.addOperation(move);\n\tthis.document.applyOperation(move);\n\n\treturn this;\n});\n\n_deltafactory2.default.register(SplitDelta);\n\n/***/ }),\n/* 107 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\nexports.default = transform;\nexports.defaultTransform = defaultTransform;\nexports.addTransformationCase = addTransformationCase;\nexports.getTransformationCase = getTransformationCase;\nexports.transformDeltaSets = transformDeltaSets;\n\nvar _delta = __webpack_require__(19);\n\nvar _delta2 = _interopRequireDefault(_delta);\n\nvar _transform = __webpack_require__(318);\n\nvar _transform2 = _interopRequireDefault(_transform);\n\nvar _nooperation = __webpack_require__(71);\n\nvar _nooperation2 = _interopRequireDefault(_nooperation);\n\nvar _array = __webpack_require__(481);\n\nvar _array2 = _interopRequireDefault(_array);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _toConsumableArray(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } else { return Array.from(arr); } } /**\n                                                                                                                                                                                                     * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                     * For licensing, see LICENSE.md.\n                                                                                                                                                                                                     */\n\n/**\n * @module engine/model/delta/transform\n */\n\nvar specialCases = new Map();\n\n/**\n * Transforms given {@link module:engine/model/delta/delta~Delta delta} by another {@link module:engine/model/delta/delta~Delta delta} and\n * returns the result of that transformation as an array containing one or more {@link module:engine/model/delta/delta~Delta delta}\n * instances.\n *\n * Delta transformations heavily base on {@link module:engine/model/operation/transform~transform operational transformations}. Since\n * delta is a list of operations most situations can be handled thanks to operational transformation. Unfortunately,\n * deltas are more complicated than operations and have they semantic meaning, as they represent user's editing intentions.\n *\n * Sometimes, simple operational transformation on deltas' operations might result in some unexpected results. Those\n * results would be fine from OT point of view, but would not reflect user's intentions. Because of such conflicts\n * we need to handle transformations in special cases in a custom way.\n *\n * The function itself looks whether two given delta types have a special case function registered. If so, the deltas are\n * transformed using that function. If not, {@link module:engine/model/delta/transform~defaultTransform default transformation algorithm}\n * is used.\n *\n * @param {module:engine/model/delta/delta~Delta} a Delta that will be transformed.\n * @param {module:engine/model/delta/delta~Delta} b Delta to transform by.\n * @param {Boolean} isAMoreImportantThanB Flag indicating whether the delta which will be transformed (`a`) should be treated\n * as more important when resolving conflicts. Note that this flag is used only if provided deltas have same\n * {@link module:engine/model/delta/delta~Delta._priority priority}. If deltas have different priorities, their importance is resolved\n * automatically and overwrites this flag.\n * @returns {Array.<module:engine/model/delta/delta~Delta>} Result of the transformation.\n */\nfunction transform(a, b, isAMoreImportantThanB) {\n\tvar transformAlgorithm = getTransformationCase(a, b) || defaultTransform;\n\n\tvar transformed = transformAlgorithm(a, b, isAMoreImportantThanB);\n\tvar baseVersion = _array2.default.last(b.operations).baseVersion;\n\n\treturn updateBaseVersion(baseVersion, transformed);\n}\n\n// Updates base versions of operations inside deltas (which are the results of delta transformation).\nfunction updateBaseVersion(baseVersion, deltas) {\n\tvar _iteratorNormalCompletion = true;\n\tvar _didIteratorError = false;\n\tvar _iteratorError = undefined;\n\n\ttry {\n\t\tfor (var _iterator = deltas[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\tvar delta = _step.value;\n\t\t\tvar _iteratorNormalCompletion2 = true;\n\t\t\tvar _didIteratorError2 = false;\n\t\t\tvar _iteratorError2 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator2 = delta.operations[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {\n\t\t\t\t\tvar op = _step2.value;\n\n\t\t\t\t\top.baseVersion = ++baseVersion;\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError2 = true;\n\t\t\t\t_iteratorError2 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion2 && _iterator2.return) {\n\t\t\t\t\t\t_iterator2.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError2) {\n\t\t\t\t\t\tthrow _iteratorError2;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t} catch (err) {\n\t\t_didIteratorError = true;\n\t\t_iteratorError = err;\n\t} finally {\n\t\ttry {\n\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t_iterator.return();\n\t\t\t}\n\t\t} finally {\n\t\t\tif (_didIteratorError) {\n\t\t\t\tthrow _iteratorError;\n\t\t\t}\n\t\t}\n\t}\n\n\treturn deltas;\n}\n\n/**\n * The default delta transformation function. It is used for those deltas that are not in special case conflict.\n *\n * This algorithm is similar to a popular `dOPT` algorithm used in operational transformation, as we are in fact\n * transforming two sets of operations by each other.\n *\n * @param {module:engine/model/delta/delta~Delta} a Delta that will be transformed.\n * @param {module:engine/model/delta/delta~Delta} b Delta to transform by.\n * @param {Boolean} isAMoreImportantThanB Flag indicating whether the delta which will be transformed (`a`) should be treated\n * as more important when resolving conflicts. Note that this flag is used only if provided deltas have same\n * {@link module:engine/model/delta/delta~Delta._priority priority}. If deltas have different priorities, their importance is resolved\n * automatically and overwrites this flag.\n * @returns {Array.<module:engine/model/delta/delta~Delta>} Result of the transformation, that is an array with single delta instance.\n */\nfunction defaultTransform(a, b, isAMoreImportantThanB) {\n\t// First, resolve the flag real value.\n\tisAMoreImportantThanB = getPriority(a.constructor, b.constructor, isAMoreImportantThanB);\n\n\t// Create a new delta instance. Make sure that the new delta is of same type as transformed delta.\n\t// We will transform operations in that delta but it doesn't mean the delta's \"meaning\" which is connected to\n\t// the delta's type. Since the delta's type is heavily used in transformations and probably other parts\n\t// of system it is important to keep proper delta type through all transformation process.\n\tvar transformed = new a.constructor();\n\n\t// Array containing operations that we will transform by. At the beginning these are just operations from\n\tvar byOps = b.operations;\n\n\t// This array is storing operations from `byOps` which got transformed by operation from delta `a`.\n\tvar newByOps = [];\n\n\t// We take each operation from original set of operations to transform.\n\tvar _iteratorNormalCompletion3 = true;\n\tvar _didIteratorError3 = false;\n\tvar _iteratorError3 = undefined;\n\n\ttry {\n\t\tfor (var _iterator3 = a.operations[Symbol.iterator](), _step3; !(_iteratorNormalCompletion3 = (_step3 = _iterator3.next()).done); _iteratorNormalCompletion3 = true) {\n\t\t\tvar opA = _step3.value;\n\n\t\t\t// We wrap the operation in the array. This is important, because operation transformation algorithm returns\n\t\t\t// an array of operations so we need to make sure that our algorithm is ready to handle arrays.\n\t\t\tvar ops = [opA];\n\n\t\t\t// Now the real algorithm takes place.\n\t\t\tvar _iteratorNormalCompletion4 = true;\n\t\t\tvar _didIteratorError4 = false;\n\t\t\tvar _iteratorError4 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator4 = byOps[Symbol.iterator](), _step4; !(_iteratorNormalCompletion4 = (_step4 = _iterator4.next()).done); _iteratorNormalCompletion4 = true) {\n\t\t\t\t\tvar opB = _step4.value;\n\n\t\t\t\t\t// For each operation that we need transform by...\n\t\t\t\t\tfor (var i = 0; i < ops.length; i++) {\n\t\t\t\t\t\t// We take each operation to transform...\n\t\t\t\t\t\tvar op = ops[i];\n\n\t\t\t\t\t\t// And transform both of them by themselves.\n\n\t\t\t\t\t\t// The result of transforming operation from delta B by operation from delta A is saved in\n\t\t\t\t\t\t// `newByOps` array. We will use that array for transformations in next loops. We need delta B\n\t\t\t\t\t\t// operations after transformed by delta A operations to get correct results of transformations\n\t\t\t\t\t\t// of next operations from delta A.\n\t\t\t\t\t\t//\n\t\t\t\t\t\t// It's like this because 2nd operation from delta A assumes that 1st operation from delta A\n\t\t\t\t\t\t// is \"already applied\". When we transform 2nd operation from delta A by operations from delta B\n\t\t\t\t\t\t// we have to be sure that operations from delta B are in a state that acknowledges 1st operation\n\t\t\t\t\t\t// from delta A.\n\t\t\t\t\t\t//\n\t\t\t\t\t\t// This can be easier understood when operations sets to transform are represented by diamond diagrams:\n\t\t\t\t\t\t// http://www.codecommit.com/blog/java/understanding-and-applying-operational-transformation\n\n\t\t\t\t\t\t// Using push.apply because operationTransform function is returning an array with one or multiple results.\n\t\t\t\t\t\tArray.prototype.push.apply(newByOps, (0, _transform2.default)(opB, op, !isAMoreImportantThanB));\n\n\t\t\t\t\t\t// Then, we transform operation from delta A by operation from delta B.\n\t\t\t\t\t\tvar results = (0, _transform2.default)(op, opB, isAMoreImportantThanB);\n\n\t\t\t\t\t\t// We replace currently processed operation from `ops` array by the results of transformation.\n\t\t\t\t\t\t// Note, that we process single operation but the operationTransform result might be an array, so we\n\t\t\t\t\t\t// might splice-in more operations. We will process them further in next iterations. Right now we\n\t\t\t\t\t\t// just save them in `ops` array and move `i` pointer by proper offset.\n\t\t\t\t\t\tArray.prototype.splice.apply(ops, [i, 1].concat(results));\n\n\t\t\t\t\t\ti += results.length - 1;\n\t\t\t\t\t}\n\n\t\t\t\t\t// At this point a single operation from delta A got transformed by a single operation from delta B.\n\t\t\t\t\t// The transformation result is in `ops` array and it may be one or more operations. This was just the first step.\n\t\t\t\t\t// Operation from delta A has to be further transformed by the other operations from delta B.\n\t\t\t\t\t// So in next iterator loop we will take another operation from delta B and use transformed delta A (`ops`)\n\t\t\t\t\t// to transform it further.\n\t\t\t\t}\n\n\t\t\t\t// We got through all delta B operations and have a final transformed state of an operation from delta A.\n\n\t\t\t\t// As previously mentioned, we substitute operations from delta B by their transformed equivalents.\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError4 = true;\n\t\t\t\t_iteratorError4 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion4 && _iterator4.return) {\n\t\t\t\t\t\t_iterator4.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError4) {\n\t\t\t\t\t\tthrow _iteratorError4;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tbyOps = newByOps;\n\t\t\tnewByOps = [];\n\n\t\t\t// We add transformed operation from delta A to newly created delta.\n\t\t\t// Remember that transformed operation from delta A may consist of multiple operations.\n\t\t\tvar _iteratorNormalCompletion5 = true;\n\t\t\tvar _didIteratorError5 = false;\n\t\t\tvar _iteratorError5 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator5 = ops[Symbol.iterator](), _step5; !(_iteratorNormalCompletion5 = (_step5 = _iterator5.next()).done); _iteratorNormalCompletion5 = true) {\n\t\t\t\t\tvar _op = _step5.value;\n\n\t\t\t\t\ttransformed.addOperation(_op);\n\t\t\t\t}\n\n\t\t\t\t// In next loop, we will take another operation from delta A and transform it through (transformed) operations\n\t\t\t\t// from delta B...\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError5 = true;\n\t\t\t\t_iteratorError5 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion5 && _iterator5.return) {\n\t\t\t\t\t\t_iterator5.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError5) {\n\t\t\t\t\t\tthrow _iteratorError5;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t} catch (err) {\n\t\t_didIteratorError3 = true;\n\t\t_iteratorError3 = err;\n\t} finally {\n\t\ttry {\n\t\t\tif (!_iteratorNormalCompletion3 && _iterator3.return) {\n\t\t\t\t_iterator3.return();\n\t\t\t}\n\t\t} finally {\n\t\t\tif (_didIteratorError3) {\n\t\t\t\tthrow _iteratorError3;\n\t\t\t}\n\t\t}\n\t}\n\n\treturn [transformed];\n}\n\n/**\n * Adds a special case callback for given delta classes.\n *\n * @external module:engine/model/delta/transform~transform\n * @function module:engine/model/delta/transform~transform.addTransformationCase\n * @param {Function} A Delta constructor which instance will get transformed.\n * @param {Function} B Delta constructor which instance will be transformed by.\n * @param {Function} resolver A callback that will handle custom special case transformation for instances of given delta classes.\n */\nfunction addTransformationCase(A, B, resolver) {\n\tvar casesA = specialCases.get(A);\n\n\tif (!casesA) {\n\t\tcasesA = new Map();\n\t\tspecialCases.set(A, casesA);\n\t}\n\n\tcasesA.set(B, resolver);\n}\n\n/**\n * Gets a special case callback which was previously {@link module:engine/model/delta/transform~transform.addTransformationCase added}.\n *\n * @param {module:engine/model/delta/delta~Delta} a Delta to transform.\n * @param {module:engine/model/delta/delta~Delta} b Delta to be transformed by.\n */\nfunction getTransformationCase(a, b) {\n\tvar casesA = specialCases.get(a.constructor);\n\n\t// If there are no special cases registered for class which `a` is instance of, we will\n\t// check if there are special cases registered for any parent class.\n\tif (!casesA || !casesA.get(b.constructor)) {\n\t\tvar cases = specialCases.keys();\n\n\t\tvar _iteratorNormalCompletion6 = true;\n\t\tvar _didIteratorError6 = false;\n\t\tvar _iteratorError6 = undefined;\n\n\t\ttry {\n\t\t\tfor (var _iterator6 = cases[Symbol.iterator](), _step6; !(_iteratorNormalCompletion6 = (_step6 = _iterator6.next()).done); _iteratorNormalCompletion6 = true) {\n\t\t\t\tvar caseClass = _step6.value;\n\n\t\t\t\tif (a instanceof caseClass && specialCases.get(caseClass).get(b.constructor)) {\n\t\t\t\t\tcasesA = specialCases.get(caseClass);\n\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t}\n\t\t} catch (err) {\n\t\t\t_didIteratorError6 = true;\n\t\t\t_iteratorError6 = err;\n\t\t} finally {\n\t\t\ttry {\n\t\t\t\tif (!_iteratorNormalCompletion6 && _iterator6.return) {\n\t\t\t\t\t_iterator6.return();\n\t\t\t\t}\n\t\t\t} finally {\n\t\t\t\tif (_didIteratorError6) {\n\t\t\t\t\tthrow _iteratorError6;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\tif (casesA) {\n\t\treturn casesA.get(b.constructor);\n\t}\n\n\treturn undefined;\n}\n\n// Checks priorities of passed constructors and decides which one is more important.\n// If both priorities are same, value passed in `isAMoreImportantThanB` parameter is used.\nfunction getPriority(A, B, isAMoreImportantThanB) {\n\tif (A._priority > B._priority) {\n\t\treturn true;\n\t} else if (A._priority < B._priority) {\n\t\treturn false;\n\t} else {\n\t\treturn isAMoreImportantThanB;\n\t}\n}\n\n/**\n * Transforms two sets of deltas by themselves. Returns both transformed sets. Does not modify passed parameters.\n *\n * @param {Array.<module:engine/model/delta/delta~Delta>} deltasA Array with first set of deltas to transform.\n * @param {Array.<module:engine/model/delta/delta~Delta>} deltasB Array with second set of deltas to transform.\n * @param {Boolean} isAMoreImportantThanB Flag indicating whether the deltas from `deltasA` set should be treated as more\n * important when resolving conflicts.\n * @returns {Object}\n * @returns {Array.<module:engine/model/delta/delta~Delta>} return.deltasA The first set of deltas transformed by the second set of deltas.\n * @returns {Array.<module:engine/model/delta/delta~Delta>} return.deltasB The second set of deltas transformed by the first set of deltas.\n */\nfunction transformDeltaSets(deltasA, deltasB, isAMoreImportantThanB) {\n\tvar transformedDeltasA = Array.from(deltasA);\n\tvar transformedDeltasB = Array.from(deltasB);\n\n\tfor (var i = 0; i < transformedDeltasA.length; i++) {\n\t\tvar deltaA = [transformedDeltasA[i]];\n\n\t\tfor (var j = 0; j < transformedDeltasB.length; j++) {\n\t\t\tvar deltaB = [transformedDeltasB[j]];\n\n\t\t\tfor (var k = 0; k < deltaA.length; k++) {\n\t\t\t\tfor (var l = 0; l < deltaB.length; l++) {\n\t\t\t\t\tvar resultAB = transform(deltaA[k], deltaB[l], isAMoreImportantThanB);\n\t\t\t\t\tvar resultBA = transform(deltaB[l], deltaA[k], !isAMoreImportantThanB);\n\n\t\t\t\t\tdeltaA.splice.apply(deltaA, [k, 1].concat(_toConsumableArray(resultAB)));\n\t\t\t\t\tk += resultAB.length - 1;\n\n\t\t\t\t\tdeltaB.splice.apply(deltaB, [l, 1].concat(_toConsumableArray(resultBA)));\n\t\t\t\t\tl += resultBA.length - 1;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\ttransformedDeltasB.splice.apply(transformedDeltasB, [j, 1].concat(deltaB));\n\t\t\tj += deltaB.length - 1;\n\t\t}\n\n\t\ttransformedDeltasA.splice.apply(transformedDeltasA, [i, 1].concat(deltaA));\n\t\ti += deltaA.length - 1;\n\t}\n\n\tvar opsDiffA = getOpsCount(transformedDeltasA) - getOpsCount(deltasA);\n\tvar opsDiffB = getOpsCount(transformedDeltasB) - getOpsCount(deltasB);\n\n\tif (opsDiffB < opsDiffA) {\n\t\tpadWithNoOps(transformedDeltasB, opsDiffA - opsDiffB);\n\t} else if (opsDiffA < opsDiffB) {\n\t\tpadWithNoOps(transformedDeltasA, opsDiffB - opsDiffA);\n\t}\n\n\treturn { deltasA: transformedDeltasA, deltasB: transformedDeltasB };\n}\n\n// Returns number of operations in given array of deltas.\nfunction getOpsCount(deltas) {\n\treturn deltas.reduce(function (current, delta) {\n\t\treturn current + delta.operations.length;\n\t}, 0);\n}\n\n// Adds a delta containing `howMany` `NoOperation` instances to given array with deltas.\n// Used to \"synchronize\" the number of operations in two delta sets.\nfunction padWithNoOps(deltas, howMany) {\n\tvar lastDelta = deltas[deltas.length - 1];\n\tvar baseVersion = lastDelta.operations.length + lastDelta.baseVersion;\n\n\tvar noDelta = new _delta2.default();\n\n\tfor (var i = 0; i < howMany; i++) {\n\t\tnoDelta.addOperation(new _nooperation2.default(baseVersion++));\n\t}\n\n\tdeltas.push(noDelta);\n}\n\n/***/ }),\n/* 108 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _delta = __webpack_require__(19);\n\nvar _delta2 = _interopRequireDefault(_delta);\n\nvar _deltafactory = __webpack_require__(17);\n\nvar _deltafactory2 = _interopRequireDefault(_deltafactory);\n\nvar _wrapdelta = __webpack_require__(109);\n\nvar _wrapdelta2 = _interopRequireDefault(_wrapdelta);\n\nvar _batch = __webpack_require__(16);\n\nvar _position = __webpack_require__(1);\n\nvar _position2 = _interopRequireDefault(_position);\n\nvar _removeoperation = __webpack_require__(37);\n\nvar _removeoperation2 = _interopRequireDefault(_removeoperation);\n\nvar _moveoperation = __webpack_require__(27);\n\nvar _moveoperation2 = _interopRequireDefault(_moveoperation);\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module engine/model/delta/unwrapdelta\n */\n\n/**\n * @classdesc\n * To provide specific OT behavior and better collisions solving, {@link module:engine/model/batch~Batch#merge} method\n * uses the `UnwrapDelta` class which inherits from the `Delta` class and may overwrite some methods.\n */\nvar UnwrapDelta = function (_Delta) {\n\t_inherits(UnwrapDelta, _Delta);\n\n\tfunction UnwrapDelta() {\n\t\t_classCallCheck(this, UnwrapDelta);\n\n\t\treturn _possibleConstructorReturn(this, (UnwrapDelta.__proto__ || Object.getPrototypeOf(UnwrapDelta)).apply(this, arguments));\n\t}\n\n\t_createClass(UnwrapDelta, [{\n\t\tkey: 'type',\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tget: function get() {\n\t\t\treturn 'unwrap';\n\t\t}\n\n\t\t/**\n   * Position before unwrapped element or `null` if there are no operations in the delta.\n   *\n   * @type {module:engine/model/position~Position|null}\n   */\n\n\t}, {\n\t\tkey: 'position',\n\t\tget: function get() {\n\t\t\treturn this._moveOperation ? this._moveOperation.targetPosition : null;\n\t\t}\n\n\t\t/**\n   * Operation in the delta that moves unwrapped nodes to their new parent or `null` if there are no operations in the delta.\n   *\n   * @protected\n   * @type {module:engine/model/operation/moveoperation~MoveOperation|null}\n   */\n\n\t}, {\n\t\tkey: '_moveOperation',\n\t\tget: function get() {\n\t\t\treturn this.operations[0] || null;\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: '_reverseDeltaClass',\n\t\tget: function get() {\n\t\t\treturn _wrapdelta2.default;\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}], [{\n\t\tkey: 'className',\n\t\tget: function get() {\n\t\t\treturn 'engine.model.delta.UnwrapDelta';\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: '_priority',\n\t\tget: function get() {\n\t\t\treturn 10;\n\t\t}\n\t}]);\n\n\treturn UnwrapDelta;\n}(_delta2.default);\n\n/**\n * Unwraps children of the given element – all its children are moved before it and then the element is removed.\n * Throws error if you try to unwrap an element which does not have a parent.\n *\n * @chainable\n * @method module:engine/model/batch~Batch#unwrap\n * @param {module:engine/model/element~Element} position Element to unwrap.\n */\n\n\nexports.default = UnwrapDelta;\n(0, _batch.register)('unwrap', function (element) {\n\tif (element.parent === null) {\n\t\t/**\n   * Trying to unwrap an element which has no parent.\n   *\n   * @error batch-unwrap-element-no-parent\n   */\n\t\tthrow new _ckeditorerror2.default('batch-unwrap-element-no-parent: Trying to unwrap an element which has no parent.');\n\t}\n\n\tvar delta = new UnwrapDelta();\n\tthis.addDelta(delta);\n\n\tvar sourcePosition = _position2.default.createFromParentAndOffset(element, 0);\n\n\tvar move = new _moveoperation2.default(sourcePosition, element.maxOffset, _position2.default.createBefore(element), this.document.version);\n\tmove.isSticky = true;\n\tdelta.addOperation(move);\n\tthis.document.applyOperation(move);\n\n\t// Computing new position because we moved some nodes before `element`.\n\t// If we would cache `Position.createBefore( element )` we remove wrong node.\n\tvar remove = new _removeoperation2.default(_position2.default.createBefore(element), 1, this.document.version);\n\tdelta.addOperation(remove);\n\tthis.document.applyOperation(remove);\n\n\treturn this;\n});\n\n_deltafactory2.default.register(UnwrapDelta);\n\n/***/ }),\n/* 109 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _delta = __webpack_require__(19);\n\nvar _delta2 = _interopRequireDefault(_delta);\n\nvar _deltafactory = __webpack_require__(17);\n\nvar _deltafactory2 = _interopRequireDefault(_deltafactory);\n\nvar _unwrapdelta = __webpack_require__(108);\n\nvar _unwrapdelta2 = _interopRequireDefault(_unwrapdelta);\n\nvar _batch = __webpack_require__(16);\n\nvar _position = __webpack_require__(1);\n\nvar _position2 = _interopRequireDefault(_position);\n\nvar _range = __webpack_require__(3);\n\nvar _range2 = _interopRequireDefault(_range);\n\nvar _element = __webpack_require__(5);\n\nvar _element2 = _interopRequireDefault(_element);\n\nvar _insertoperation = __webpack_require__(36);\n\nvar _insertoperation2 = _interopRequireDefault(_insertoperation);\n\nvar _moveoperation = __webpack_require__(27);\n\nvar _moveoperation2 = _interopRequireDefault(_moveoperation);\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module engine/model/delta/wrapdelta\n */\n\n/**\n * @classdesc\n * To provide specific OT behavior and better collisions solving, {@link module:engine/model/batch~Batch#merge} method\n * uses the `WrapDelta` class which inherits from the `Delta` class and may overwrite some methods.\n */\nvar WrapDelta = function (_Delta) {\n\t_inherits(WrapDelta, _Delta);\n\n\tfunction WrapDelta() {\n\t\t_classCallCheck(this, WrapDelta);\n\n\t\treturn _possibleConstructorReturn(this, (WrapDelta.__proto__ || Object.getPrototypeOf(WrapDelta)).apply(this, arguments));\n\t}\n\n\t_createClass(WrapDelta, [{\n\t\tkey: 'type',\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tget: function get() {\n\t\t\treturn 'wrap';\n\t\t}\n\n\t\t/**\n   * Range to wrap or `null` if there are no operations in the delta.\n   *\n   * @type {module:engine/model/range~Range|null}\n   */\n\n\t}, {\n\t\tkey: 'range',\n\t\tget: function get() {\n\t\t\tvar moveOp = this._moveOperation;\n\n\t\t\treturn moveOp ? _range2.default.createFromPositionAndShift(moveOp.sourcePosition, moveOp.howMany) : null;\n\t\t}\n\n\t\t/**\n   * Offset size of range to wrap by the delta or `null` if there are no operations in delta.\n   *\n   * @type {Number}\n   */\n\n\t}, {\n\t\tkey: 'howMany',\n\t\tget: function get() {\n\t\t\tvar range = this.range;\n\n\t\t\treturn range ? range.end.offset - range.start.offset : 0;\n\t\t}\n\n\t\t/**\n   * Operation that inserts wrapping element or `null` if there are no operations in the delta.\n   *\n   * @protected\n   * @type {module:engine/model/operation/insertoperation~InsertOperation|module:engine/model/operation/reinsertoperation~ReinsertOperation}\n   */\n\n\t}, {\n\t\tkey: '_insertOperation',\n\t\tget: function get() {\n\t\t\treturn this.operations[0] || null;\n\t\t}\n\n\t\t/**\n   * Operation that moves wrapped nodes to their new parent or `null` if there are no operations in the delta.\n   *\n   * @protected\n   * @type {module:engine/model/operation/moveoperation~MoveOperation|null}\n   */\n\n\t}, {\n\t\tkey: '_moveOperation',\n\t\tget: function get() {\n\t\t\treturn this.operations[1] || null;\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: '_reverseDeltaClass',\n\t\tget: function get() {\n\t\t\treturn _unwrapdelta2.default;\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}], [{\n\t\tkey: 'className',\n\t\tget: function get() {\n\t\t\treturn 'engine.model.delta.WrapDelta';\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: '_priority',\n\t\tget: function get() {\n\t\t\treturn 10;\n\t\t}\n\t}]);\n\n\treturn WrapDelta;\n}(_delta2.default);\n\n/**\n * Wraps given range with given element or with a new element with specified name, if string has been passed.\n * **Note:** range to wrap should be a \"flat range\" (see {@link module:engine/model/range~Range#isFlat}). If not, error will be thrown.\n *\n * @chainable\n * @method module:engine/model/batch~Batch#wrap\n * @param {module:engine/model/range~Range} range Range to wrap.\n * @param {module:engine/model/element~Element|String} elementOrString Element or name of element to wrap the range with.\n */\n\n\nexports.default = WrapDelta;\n(0, _batch.register)('wrap', function (range, elementOrString) {\n\tif (!range.isFlat) {\n\t\t/**\n   * Range to wrap is not flat.\n   *\n   * @error batch-wrap-range-not-flat\n   */\n\t\tthrow new _ckeditorerror2.default('batch-wrap-range-not-flat: Range to wrap is not flat.');\n\t}\n\n\tvar element = elementOrString instanceof _element2.default ? elementOrString : new _element2.default(elementOrString);\n\n\tif (element.childCount > 0) {\n\t\t/**\n   * Element to wrap with is not empty.\n   *\n   * @error batch-wrap-element-not-empty\n   */\n\t\tthrow new _ckeditorerror2.default('batch-wrap-element-not-empty: Element to wrap with is not empty.');\n\t}\n\n\tif (element.parent !== null) {\n\t\t/**\n   * Element to wrap with is already attached to a tree model.\n   *\n   * @error batch-wrap-element-attached\n   */\n\t\tthrow new _ckeditorerror2.default('batch-wrap-element-attached: Element to wrap with is already attached to tree model.');\n\t}\n\n\tvar delta = new WrapDelta();\n\tthis.addDelta(delta);\n\n\tvar insert = new _insertoperation2.default(range.end, element, this.document.version);\n\tdelta.addOperation(insert);\n\tthis.document.applyOperation(insert);\n\n\tvar targetPosition = _position2.default.createFromParentAndOffset(element, 0);\n\tvar move = new _moveoperation2.default(range.start, range.end.offset - range.start.offset, targetPosition, this.document.version);\n\tdelta.addOperation(move);\n\tthis.document.applyOperation(move);\n\n\treturn this;\n});\n\n_deltafactory2.default.register(WrapDelta);\n\n/***/ }),\n/* 110 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _range = __webpack_require__(3);\n\nvar _range2 = _interopRequireDefault(_range);\n\nvar _emittermixin = __webpack_require__(8);\n\nvar _emittermixin2 = _interopRequireDefault(_emittermixin);\n\nvar _mix = __webpack_require__(4);\n\nvar _mix2 = _interopRequireDefault(_mix);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module engine/model/liverange\n */\n\n/**\n * `LiveRange` is a type of {@link module:engine/model/range~Range Range}\n * that updates itself as {@link module:engine/model/document~Document document}\n * is changed through operations. It may be used as a bookmark.\n *\n * **Note:** Be very careful when dealing with `LiveRange`. Each `LiveRange` instance bind events that might\n * have to be unbound. Use {@link module:engine/model/liverange~LiveRange#detach detach} whenever you don't need `LiveRange` anymore.\n */\nvar LiveRange = function (_Range) {\n\t_inherits(LiveRange, _Range);\n\n\t/**\n  * Creates a live range.\n  *\n  * @see module:engine/model/range~Range\n  */\n\tfunction LiveRange(start, end) {\n\t\t_classCallCheck(this, LiveRange);\n\n\t\tvar _this = _possibleConstructorReturn(this, (LiveRange.__proto__ || Object.getPrototypeOf(LiveRange)).call(this, start, end));\n\n\t\tbindWithDocument.call(_this);\n\t\treturn _this;\n\t}\n\n\t/**\n  * Unbinds all events previously bound by `LiveRange`. Use it whenever you don't need `LiveRange` instance\n  * anymore (i.e. when leaving scope in which it was declared or before re-assigning variable that was\n  * referring to it).\n  */\n\n\n\t_createClass(LiveRange, [{\n\t\tkey: 'detach',\n\t\tvalue: function detach() {\n\t\t\tthis.stopListening();\n\t\t}\n\n\t\t/**\n   * @see module:engine/model/range~Range.createIn\n   * @static\n   * @method module:engine/model/liverange~LiveRange.createIn\n   * @param {module:engine/model/element~Element} element\n   * @returns {module:engine/model/liverange~LiveRange}\n   */\n\n\t\t/**\n   * @see module:engine/model/range~Range.createFromPositionAndShift\n   * @static\n   * @method module:engine/model/liverange~LiveRange.createFromPositionAndShift\n   * @param {module:engine/model/position~Position} position\n   * @param {Number} shift\n   * @returns {module:engine/model/liverange~LiveRange}\n   */\n\n\t\t/**\n   * @see module:engine/model/range~Range.createFromParentsAndOffsets\n   * @static\n   * @method module:engine/model/liverange~LiveRange.createFromParentsAndOffsets\n   * @param {module:engine/model/element~Element} startElement\n   * @param {Number} startOffset\n   * @param {module:engine/model/element~Element} endElement\n   * @param {Number} endOffset\n   * @returns {module:engine/model/liverange~LiveRange}\n   */\n\n\t\t/**\n   * @see module:engine/model/range~Range.createFromRange\n   * @static\n   * @method module:engine/model/liverange~LiveRange.createFromRange\n   * @param {module:engine/model/range~Range} range\n   * @returns {module:engine/model/liverange~LiveRange}\n   */\n\n\t\t/**\n   * Fired when `LiveRange` instance is changed due to changes on {@link module:engine/model/document~Document}.\n   *\n   * @event change\n   * @param {module:engine/model/range~Range} oldRange\n   * Range with start and end position equal to start and end position of this live range before it got changed.\n   */\n\n\t}]);\n\n\treturn LiveRange;\n}(_range2.default);\n\n/**\n * Binds this `LiveRange` to the {@link module:engine/model/document~Document document}\n * that owns this range's {@link module:engine/model/range~Range#root root}.\n *\n * @ignore\n * @private\n * @method module:engine/model/liverange~LiveRange#bindWithDocument\n */\n\n\nexports.default = LiveRange;\nfunction bindWithDocument() {\n\tvar _this2 = this;\n\n\t/*jshint validthis: true */\n\t// Operation types that a range can be transformed by.\n\tvar supportedTypes = new Set(['insert', 'move', 'remove', 'reinsert']);\n\n\tthis.listenTo(this.root.document, 'change', function (event, type, changes, batch, deltaType) {\n\t\tif (supportedTypes.has(type)) {\n\t\t\ttransform.call(_this2, type, deltaType, changes.range, changes.sourcePosition);\n\t\t}\n\t}, { priority: 'high' });\n}\n\n/**\n * Updates this range accordingly to the updates applied to the model. Bases on change events.\n *\n * @ignore\n * @private\n * @method transform\n * @param {String} [changeType] Type of change applied to the model document.\n * @param {String} [deltaType] Type of delta which introduced the change.\n * @param {module:engine/model/range~Range} targetRange Range containing the result of applied change.\n * @param {module:engine/model/position~Position} [sourcePosition] Source position for move, remove and reinsert change types.\n */\nfunction transform(changeType, deltaType, targetRange, sourcePosition) {\n\t/* jshint validthis: true */\n\tvar howMany = targetRange.end.offset - targetRange.start.offset;\n\tvar targetPosition = targetRange.start;\n\n\tif (changeType == 'move') {\n\t\t// Range._getTransformedByDocumentChange is expecting `targetPosition` to be \"before\" move\n\t\t// (before transformation). `targetRange.start` is already after the move happened.\n\t\t// We have to revert `targetPosition` to the state before the move.\n\t\ttargetPosition = targetPosition._getTransformedByInsertion(sourcePosition, howMany);\n\t}\n\n\tvar result = this._getTransformedByDocumentChange(changeType, deltaType, targetPosition, howMany, sourcePosition);\n\n\t// Decide whether moved part should be included in the range.\n\t//\n\t// First, this concerns only `move` change, because insert change includes inserted part always (changeType == 'move').\n\t// Second, this is a case only if moved range was intersecting with this range and was inserted into this range (result.length == 3).\n\tif (changeType == 'move' && result.length == 3) {\n\t\t// `result[ 2 ]` is a \"common part\" of this range and moved range. We substitute that common part with the whole\n\t\t// `targetRange` because we want to include whole `targetRange` in this range.\n\t\tresult[2] = targetRange;\n\t}\n\n\tvar updated = _range2.default.createFromRanges(result);\n\n\t// If anything changed, update the range and fire an event.\n\tif (!updated.isEqual(this)) {\n\t\tvar oldRange = _range2.default.createFromRange(this);\n\n\t\tthis.start = updated.start;\n\t\tthis.end = updated.end;\n\n\t\tthis.fire('change', oldRange);\n\t}\n}\n\n(0, _mix2.default)(LiveRange, _emittermixin2.default);\n\n/***/ }),\n/* 111 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if (\"value\" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };\n\nvar _operation = __webpack_require__(32);\n\nvar _operation2 = _interopRequireDefault(_operation);\n\nvar _range = __webpack_require__(3);\n\nvar _range2 = _interopRequireDefault(_range);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module engine/model/operation/markeroperation\n */\n\n/**\n * @extends module:engine/model/operation/operation~Operation\n */\nvar MarkerOperation = function (_Operation) {\n\t_inherits(MarkerOperation, _Operation);\n\n\t/**\n  * @param {String} name Marker name.\n  * @param {module:engine/model/range~Range} oldRange Marker range before the change.\n  * @param {module:engine/model/range~Range} newRange Marker range after the change.\n  * @param {module:engine/model/markercollection~MarkerCollection} markers Marker collection on which change should be executed.\n  * @param {Number} baseVersion {@link module:engine/model/document~Document#version} on which the operation can be applied.\n  */\n\tfunction MarkerOperation(name, oldRange, newRange, markers, baseVersion) {\n\t\t_classCallCheck(this, MarkerOperation);\n\n\t\t/**\n   * Marker name.\n   *\n   * @readonly\n   * @member {String}\n   */\n\t\tvar _this = _possibleConstructorReturn(this, (MarkerOperation.__proto__ || Object.getPrototypeOf(MarkerOperation)).call(this, baseVersion));\n\n\t\t_this.name = name;\n\n\t\t/**\n   * Marker range before the change.\n   *\n   * @readonly\n   * @member {module:engine/model/range~Range}\n   */\n\t\t_this.oldRange = oldRange ? _range2.default.createFromRange(oldRange) : null;\n\n\t\t/**\n   * Marker range after the change.\n   *\n   * @readonly\n   * @member {module:engine/model/range~Range}\n   */\n\t\t_this.newRange = newRange ? _range2.default.createFromRange(newRange) : null;\n\n\t\t/**\n   * Marker collection on which change should be executed.\n   *\n   * @private\n   * @member {module:engine/model/markercollection~MarkerCollection}\n   */\n\t\t_this._markers = markers;\n\t\treturn _this;\n\t}\n\n\t/**\n  * @inheritDoc\n  */\n\n\n\t_createClass(MarkerOperation, [{\n\t\tkey: 'clone',\n\n\n\t\t/**\n   * @inheritDoc\n   * @returns {module:engine/model/operation/markeroperation~MarkerOperation}\n   */\n\t\tvalue: function clone() {\n\t\t\treturn new MarkerOperation(this.name, this.oldRange, this.newRange, this._markers, this.baseVersion);\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   * @returns {module:engine/model/operation/markeroperation~MarkerOperation}\n   */\n\n\t}, {\n\t\tkey: 'getReversed',\n\t\tvalue: function getReversed() {\n\t\t\treturn new MarkerOperation(this.name, this.newRange, this.oldRange, this._markers, this.baseVersion + 1);\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: '_execute',\n\t\tvalue: function _execute() {\n\t\t\tvar type = this.newRange ? 'set' : 'remove';\n\n\t\t\tthis._markers[type](this.name, this.newRange);\n\n\t\t\treturn { name: this.name, type: type };\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: 'toJSON',\n\t\tvalue: function toJSON() {\n\t\t\tvar json = _get(MarkerOperation.prototype.__proto__ || Object.getPrototypeOf(MarkerOperation.prototype), 'toJSON', this).call(this);\n\n\t\t\tdelete json._markers;\n\n\t\t\treturn json;\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: 'type',\n\t\tget: function get() {\n\t\t\treturn 'marker';\n\t\t}\n\t}], [{\n\t\tkey: 'fromJSON',\n\n\n\t\t/**\n   * Creates `MarkerOperation` object from deserilized object, i.e. from parsed JSON string.\n   *\n   * @param {Object} json Deserialized JSON object.\n   * @param {module:engine/model/document~Document} document Document on which this operation will be applied.\n   * @returns {module:engine/model/operation/markeroperation~MarkerOperation}\n   */\n\t\tvalue: function fromJSON(json, document) {\n\t\t\treturn new MarkerOperation(json.name, json.oldRange ? _range2.default.fromJSON(json.oldRange, document) : null, json.newRange ? _range2.default.fromJSON(json.newRange, document) : null, document.markers, json.baseVersion);\n\t\t}\n\t}, {\n\t\tkey: 'className',\n\t\tget: function get() {\n\t\t\treturn 'engine.model.operation.MarkerOperation';\n\t\t}\n\t}]);\n\n\treturn MarkerOperation;\n}(_operation2.default);\n\nexports.default = MarkerOperation;\n\n/***/ }),\n/* 112 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _moveoperation = __webpack_require__(27);\n\nvar _moveoperation2 = _interopRequireDefault(_moveoperation);\n\nvar _removeoperation = __webpack_require__(37);\n\nvar _removeoperation2 = _interopRequireDefault(_removeoperation);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module engine/model/operation/reinsertoperation\n */\n\n/**\n * Operation to reinsert previously removed nodes back to the non-graveyard root. This operation acts like\n * {@link module:engine/model/operation/moveoperation~MoveOperation} but it returns\n * {@link module:engine/model/operation/removeoperation~RemoveOperation} when reversed\n * and fires different change event.\n */\nvar ReinsertOperation = function (_MoveOperation) {\n\t_inherits(ReinsertOperation, _MoveOperation);\n\n\tfunction ReinsertOperation() {\n\t\t_classCallCheck(this, ReinsertOperation);\n\n\t\treturn _possibleConstructorReturn(this, (ReinsertOperation.__proto__ || Object.getPrototypeOf(ReinsertOperation)).apply(this, arguments));\n\t}\n\n\t_createClass(ReinsertOperation, [{\n\t\tkey: 'getReversed',\n\n\n\t\t/**\n   * @inheritDoc\n   * @returns {module:engine/model/operation/removeoperation~RemoveOperation}\n   */\n\t\tvalue: function getReversed() {\n\t\t\treturn new _removeoperation2.default(this.targetPosition, this.howMany, this.baseVersion + 1);\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: 'position',\n\n\t\t/**\n   * Position where nodes will be re-inserted.\n   *\n   * @type {module:engine/model/position~Position}\n   */\n\t\tget: function get() {\n\t\t\treturn this.targetPosition;\n\t\t}\n\n\t\t/**\n   * @param {module:engine/model/position~Position} pos\n   */\n\t\t,\n\t\tset: function set(pos) {\n\t\t\tthis.targetPosition = pos;\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: 'type',\n\t\tget: function get() {\n\t\t\treturn 'reinsert';\n\t\t}\n\t}], [{\n\t\tkey: 'className',\n\t\tget: function get() {\n\t\t\treturn 'engine.model.operation.ReinsertOperation';\n\t\t}\n\t}]);\n\n\treturn ReinsertOperation;\n}(_moveoperation2.default);\n\nexports.default = ReinsertOperation;\n\n/***/ }),\n/* 113 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _operation = __webpack_require__(32);\n\nvar _operation2 = _interopRequireDefault(_operation);\n\nvar _element = __webpack_require__(5);\n\nvar _element2 = _interopRequireDefault(_element);\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nvar _position = __webpack_require__(1);\n\nvar _position2 = _interopRequireDefault(_position);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module engine/model/operation/renameoperation\n */\n\n/**\n * Operation to change element's name.\n *\n * Using this class you can change element's name.\n *\n * @extends module:engine/model/operation/operation~Operation\n */\nvar RenameOperation = function (_Operation) {\n\t_inherits(RenameOperation, _Operation);\n\n\t/**\n  * Creates an operation that changes element's name.\n  *\n  * @param {module:engine/model/position~Position} position Position before an element to change.\n  * @param {String} oldName Current name of the element.\n  * @param {String} newName New name for the element.\n  * @param {Number} baseVersion {@link module:engine/model/document~Document#version} on which the operation can be applied.\n  */\n\tfunction RenameOperation(position, oldName, newName, baseVersion) {\n\t\t_classCallCheck(this, RenameOperation);\n\n\t\t/**\n   * Position before an element to change.\n   *\n   * @member {module:engine/model/position~Position} module:engine/model/operation/renameoperation~RenameOperation#position\n   */\n\t\tvar _this = _possibleConstructorReturn(this, (RenameOperation.__proto__ || Object.getPrototypeOf(RenameOperation)).call(this, baseVersion));\n\n\t\t_this.position = position;\n\n\t\t/**\n   * Current name of the element.\n   *\n   * @member {String} module:engine/model/operation/renameoperation~RenameOperation#oldName\n   */\n\t\t_this.oldName = oldName;\n\n\t\t/**\n   * New name for the element.\n   *\n   * @member {String} module:engine/model/operation/renameoperation~RenameOperation#newName\n   */\n\t\t_this.newName = newName;\n\t\treturn _this;\n\t}\n\n\t/**\n  * @inheritDoc\n  */\n\n\n\t_createClass(RenameOperation, [{\n\t\tkey: 'clone',\n\n\n\t\t/**\n   * @inheritDoc\n   * @returns {module:engine/model/operation/renameoperation~RenameOperation}\n   */\n\t\tvalue: function clone() {\n\t\t\treturn new RenameOperation(_position2.default.createFromPosition(this.position), this.oldName, this.newName, this.baseVersion);\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   * @returns {module:engine/model/operation/renameoperation~RenameOperation}\n   */\n\n\t}, {\n\t\tkey: 'getReversed',\n\t\tvalue: function getReversed() {\n\t\t\treturn new RenameOperation(_position2.default.createFromPosition(this.position), this.newName, this.oldName, this.baseVersion + 1);\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: '_execute',\n\t\tvalue: function _execute() {\n\t\t\t// Validation.\n\t\t\tvar element = this.position.nodeAfter;\n\n\t\t\tif (!(element instanceof _element2.default)) {\n\t\t\t\t/**\n     * Given position is invalid or node after it is not instance of Element.\n     *\n     * @error rename-operation-wrong-position\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('rename-operation-wrong-position: Given position is invalid or node after it is not an instance of Element.');\n\t\t\t} else if (element.name !== this.oldName) {\n\t\t\t\t/**\n     * Element to change has different name than operation's old name.\n     *\n     * @error rename-operation-wrong-name\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('rename-operation-wrong-name: Element to change has different name than operation\\'s old name.');\n\t\t\t}\n\n\t\t\t// If value to set is same as old value, don't do anything.\n\t\t\t// By not returning `undefined`, this operation will be seen as `NoOperation` - that means\n\t\t\t// that it won't generate any events, etc. `RenameOperation` with such parameters may be\n\t\t\t// a result of Operational Transformation.\n\t\t\tif (this.oldName == this.newName) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\telement.name = this.newName;\n\n\t\t\treturn { element: element, oldName: this.oldName };\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: 'type',\n\t\tget: function get() {\n\t\t\treturn 'rename';\n\t\t}\n\t}], [{\n\t\tkey: 'fromJSON',\n\n\n\t\t/**\n   * Creates `RenameOperation` object from deserialized object, i.e. from parsed JSON string.\n   *\n   * @param {Object} json Deserialized JSON object.\n   * @param {module:engine/model/document~Document} document Document on which this operation will be applied.\n   * @returns {module:engine/model/operation/attributeoperation~AttributeOperation}\n   */\n\t\tvalue: function fromJSON(json, document) {\n\t\t\treturn new RenameOperation(_position2.default.fromJSON(json.position, document), json.oldName, json.newName, json.baseVersion);\n\t\t}\n\t}, {\n\t\tkey: 'className',\n\t\tget: function get() {\n\t\t\treturn 'engine.model.operation.RenameOperation';\n\t\t}\n\t}]);\n\n\treturn RenameOperation;\n}(_operation2.default);\n\nexports.default = RenameOperation;\n\n/***/ }),\n/* 114 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _operation = __webpack_require__(32);\n\nvar _operation2 = _interopRequireDefault(_operation);\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module engine/model/operation/rootattributeoperation\n */\n\n/**\n * Operation to change root element's attribute. Using this class you can add, remove or change value of the attribute.\n *\n * This operation is needed, because root elements can't be changed through\n * @link module:engine/model/operation/attributeoperation~AttributeOperation}.\n * It is because {@link module:engine/model/operation/attributeoperation~AttributeOperation}\n * requires a range to change and root element can't\n * be a part of range because every {@link module:engine/model/position~Position} has to be inside a root.\n * {@link module:engine/model/position~Position} can't be created before a root element.\n *\n * @extends module:engine/model/operation/operation~Operation\n */\nvar RootAttributeOperation = function (_Operation) {\n\t_inherits(RootAttributeOperation, _Operation);\n\n\t/**\n  * Creates an operation that changes, removes or adds attributes on root element.\n  *\n  * @see module:engine/model/operation/attributeoperation~AttributeOperation\n  * @param {module:engine/model/rootelement~RootElement} root Root element to change.\n  * @param {String} key Key of an attribute to change or remove.\n  * @param {*} oldValue Old value of the attribute with given key or `null` if adding a new attribute.\n  * @param {*} newValue New value to set for the attribute. If `null`, then the operation just removes the attribute.\n  * @param {Number} baseVersion {@link module:engine/model/document~Document#version} on which the operation can be applied.\n  */\n\tfunction RootAttributeOperation(root, key, oldValue, newValue, baseVersion) {\n\t\t_classCallCheck(this, RootAttributeOperation);\n\n\t\t/**\n   * Root element to change.\n   *\n   * @readonly\n   * @member {module:engine/model/rootelement~RootElement}\n   */\n\t\tvar _this = _possibleConstructorReturn(this, (RootAttributeOperation.__proto__ || Object.getPrototypeOf(RootAttributeOperation)).call(this, baseVersion));\n\n\t\t_this.root = root;\n\n\t\t/**\n   * Key of an attribute to change or remove.\n   *\n   * @readonly\n   * @member {String}\n   */\n\t\t_this.key = key;\n\n\t\t/**\n   * Old value of the attribute with given key or `null` if adding a new attribute.\n   *\n   * @readonly\n   * @member {*}\n   */\n\t\t_this.oldValue = oldValue;\n\n\t\t/**\n   * New value to set for the attribute. If `null`, then the operation just removes the attribute.\n   *\n   * @readonly\n   * @member {*}\n   */\n\t\t_this.newValue = newValue;\n\t\treturn _this;\n\t}\n\n\t_createClass(RootAttributeOperation, [{\n\t\tkey: 'clone',\n\n\n\t\t/**\n   * @returns {module:engine/model/operation/rootattributeoperation~RootAttributeOperation}\n   */\n\t\tvalue: function clone() {\n\t\t\treturn new RootAttributeOperation(this.root, this.key, this.oldValue, this.newValue, this.baseVersion);\n\t\t}\n\n\t\t/**\n   * @returns {module:engine/model/operation/rootattributeoperation~RootAttributeOperation}\n   */\n\n\t}, {\n\t\tkey: 'getReversed',\n\t\tvalue: function getReversed() {\n\t\t\treturn new RootAttributeOperation(this.root, this.key, this.newValue, this.oldValue, this.baseVersion + 1);\n\t\t}\n\t}, {\n\t\tkey: '_execute',\n\t\tvalue: function _execute() {\n\t\t\tif (this.oldValue !== null && this.root.getAttribute(this.key) !== this.oldValue) {\n\t\t\t\t/**\n     * The attribute which should be removed does not exists for the given node.\n     *\n     * @error rootattribute-operation-wrong-old-value\n     * @param {module:engine/model/rootelement~RootElement} root\n     * @param {String} key\n     * @param {*} value\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('rootattribute-operation-wrong-old-value: Changed node has different attribute value than operation\\'s old attribute value.', { root: this.root, key: this.key });\n\t\t\t}\n\n\t\t\tif (this.oldValue === null && this.newValue !== null && this.root.hasAttribute(this.key)) {\n\t\t\t\t/**\n     * The attribute with given key already exists for the given node.\n     *\n     * @error rootattribute-operation-attribute-exists\n     * @param {module:engine/model/rootelement~RootElement} root\n     * @param {String} key\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('rootattribute-operation-attribute-exists: The attribute with given key already exists.', { root: this.root, key: this.key });\n\t\t\t}\n\n\t\t\tif (this.newValue !== null) {\n\t\t\t\tthis.root.setAttribute(this.key, this.newValue);\n\t\t\t} else {\n\t\t\t\tthis.root.removeAttribute(this.key);\n\t\t\t}\n\n\t\t\treturn { root: this.root, key: this.key, oldValue: this.oldValue, newValue: this.newValue };\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: 'type',\n\t\tget: function get() {\n\t\t\tif (this.oldValue === null) {\n\t\t\t\treturn 'addRootAttribute';\n\t\t\t} else if (this.newValue === null) {\n\t\t\t\treturn 'removeRootAttribute';\n\t\t\t} else {\n\t\t\t\treturn 'changeRootAttribute';\n\t\t\t}\n\t\t}\n\t}], [{\n\t\tkey: 'fromJSON',\n\n\n\t\t/**\n   * Creates RootAttributeOperation object from deserilized object, i.e. from parsed JSON string.\n   *\n   * @param {Object} json Deserialized JSON object.\n   * @param {module:engine/model/document~Document} document Document on which this operation will be applied.\n   * @returns {module:engine/model/operation/rootattributeoperation~RootAttributeOperation}\n   */\n\t\tvalue: function fromJSON(json, document) {\n\t\t\tif (!document.hasRoot(json.root)) {\n\t\t\t\t/**\n     * Cannot create RootAttributeOperation for document. Root with specified name does not exist.\n     *\n     * @error rootattributeoperation-fromjson-no-root\n     * @param {String} rootName\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('rootattribute-operation-fromjson-no-root: Cannot create RootAttributeOperation. Root with specified name does not exist.', { rootName: json });\n\t\t\t}\n\n\t\t\treturn new RootAttributeOperation(document.getRoot(json.root), json.key, json.oldValue, json.newValue, json.baseVersion);\n\t\t}\n\t}, {\n\t\tkey: 'className',\n\t\tget: function get() {\n\t\t\treturn 'engine.model.operation.RootAttributeOperation';\n\t\t}\n\t}]);\n\n\treturn RootAttributeOperation;\n}(_operation2.default);\n\nexports.default = RootAttributeOperation;\n\n/***/ }),\n/* 115 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if (\"value\" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };\n\nvar _element = __webpack_require__(20);\n\nvar _element2 = _interopRequireDefault(_element);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module engine/view/attributeelement\n */\n\n// Default attribute priority.\nvar DEFAULT_PRIORITY = 10;\n\n/**\n * Attributes are elements which define document presentation. They are mostly elements like `<b>` or `<span>`.\n * Attributes can be broken and merged by the {@link module:engine/view/writer~writer view writer}.\n *\n * Editing engine does not define fixed HTML DTD. This is why the type of the {@link module:engine/view/element~Element} need to\n * be defined by the feature developer. Creating an element you should use {@link module:engine/view/containerelement~ContainerElement}\n * class or `AttributeElement`.\n *\n * @extends module:engine/view/element~Element\n */\n\nvar AttributeElement = function (_Element) {\n\t_inherits(AttributeElement, _Element);\n\n\t/**\n  * Creates a attribute element.\n  *\n  * @see module:engine/view/element~Element\n  */\n\tfunction AttributeElement(name, attrs, children) {\n\t\t_classCallCheck(this, AttributeElement);\n\n\t\t/**\n   * Element priority. Attributes have to have the same priority to be\n   * {@link module:engine/view/element~Element#isSimilar similar}. Setting different priorities on similar\n  \t * nodes may prevent merging, e.g. two `<abbr>` nodes next each other shouldn't be merged.\n   *\n   * @member {Number}\n   */\n\t\tvar _this = _possibleConstructorReturn(this, (AttributeElement.__proto__ || Object.getPrototypeOf(AttributeElement)).call(this, name, attrs, children));\n\n\t\t_this.priority = DEFAULT_PRIORITY;\n\n\t\t/**\n   * Returns block {@link module:engine/view/filler filler} offset or `null` if block filler is not needed.\n   *\n   * @method #getFillerOffset\n   * @returns {Number|null} Block filler offset or `null` if block filler is not needed.\n   */\n\t\t_this.getFillerOffset = getFillerOffset;\n\t\treturn _this;\n\t}\n\n\t/**\n  * @inheritDoc\n  */\n\n\n\t_createClass(AttributeElement, [{\n\t\tkey: 'is',\n\t\tvalue: function is(type) {\n\t\t\tvar name = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n\n\t\t\tif (!name) {\n\t\t\t\treturn type == 'attributeElement' || _get(AttributeElement.prototype.__proto__ || Object.getPrototypeOf(AttributeElement.prototype), 'is', this).call(this, type);\n\t\t\t} else {\n\t\t\t\treturn type == 'attributeElement' && name == this.name || _get(AttributeElement.prototype.__proto__ || Object.getPrototypeOf(AttributeElement.prototype), 'is', this).call(this, type, name);\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Clones provided element with priority.\n   *\n   * @param {Boolean} deep If set to `true` clones element and all its children recursively. When set to `false`,\n   * element will be cloned without any children.\n   * @returns {module:engine/view/attributeelement~AttributeElement} Clone of this element.\n   */\n\n\t}, {\n\t\tkey: 'clone',\n\t\tvalue: function clone(deep) {\n\t\t\tvar cloned = _get(AttributeElement.prototype.__proto__ || Object.getPrototypeOf(AttributeElement.prototype), 'clone', this).call(this, deep);\n\n\t\t\t// Clone priority too.\n\t\t\tcloned.priority = this.priority;\n\n\t\t\treturn cloned;\n\t\t}\n\n\t\t/**\n   * Checks if this element is similar to other element.\n   * Both elements should have the same name, attributes and priority to be considered as similar.\n   * Two similar elements can contain different set of children nodes.\n   *\n   * @param {module:engine/view/element~Element} otherElement\n   * @returns {Boolean}\n   */\n\n\t}, {\n\t\tkey: 'isSimilar',\n\t\tvalue: function isSimilar(otherElement) {\n\t\t\treturn _get(AttributeElement.prototype.__proto__ || Object.getPrototypeOf(AttributeElement.prototype), 'isSimilar', this).call(this, otherElement) && this.priority == otherElement.priority;\n\t\t}\n\t}]);\n\n\treturn AttributeElement;\n}(_element2.default);\n\n/**\n * Default attribute priority.\n *\n * @member {Number} module:engine/view/attributeelement~AttributeElement.DEFAULT_PRIORITY\n */\n\n\nexports.default = AttributeElement;\nAttributeElement.DEFAULT_PRIORITY = DEFAULT_PRIORITY;\n\n// Returns block {@link module:engine/view/filler~Filler filler} offset or `null` if block filler is not needed.\n//\n// @returns {Number|null} Block filler offset or `null` if block filler is not needed.\nfunction getFillerOffset() {\n\t/*jshint validthis:true */\n\n\t// <b>foo</b> does not need filler.\n\tif (this.childCount) {\n\t\treturn null;\n\t}\n\n\tvar element = this.parent;\n\n\t// <p><b></b></p> needs filler -> <p><b><br></b></p>\n\twhile (element && element.is('attributeElement')) {\n\t\tif (element.childCount > 1) {\n\t\t\treturn null;\n\t\t}\n\n\t\telement = element.parent;\n\t}\n\n\tif (!element || element.childCount > 1) {\n\t\treturn null;\n\t}\n\n\treturn 0;\n}\n\n/***/ }),\n/* 116 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module engine/view/documentfragment\n */\n\nvar _text = __webpack_require__(29);\n\nvar _text2 = _interopRequireDefault(_text);\n\nvar _mix = __webpack_require__(4);\n\nvar _mix2 = _interopRequireDefault(_mix);\n\nvar _isiterable = __webpack_require__(41);\n\nvar _isiterable2 = _interopRequireDefault(_isiterable);\n\nvar _emittermixin = __webpack_require__(8);\n\nvar _emittermixin2 = _interopRequireDefault(_emittermixin);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * DocumentFragment class.\n */\nvar DocumentFragment = function () {\n\t/**\n  * Creates new DocumentFragment instance.\n  *\n  * @param {module:engine/view/node~Node|Iterable.<module:engine/view/node~Node>} [children] List of nodes to be inserted into\n  * created document fragment.\n  */\n\tfunction DocumentFragment(children) {\n\t\t_classCallCheck(this, DocumentFragment);\n\n\t\t/**\n   * Array of child nodes.\n   *\n   * @protected\n   * @member {Array.<module:engine/view/element~Element>} module:engine/view/documentfragment~DocumentFragment#_children\n   */\n\t\tthis._children = [];\n\n\t\tif (children) {\n\t\t\tthis.insertChildren(0, children);\n\t\t}\n\t}\n\n\t/**\n  * Iterates over nodes added to this DocumentFragment.\n  */\n\n\n\t_createClass(DocumentFragment, [{\n\t\tkey: Symbol.iterator,\n\t\tvalue: function value() {\n\t\t\treturn this._children[Symbol.iterator]();\n\t\t}\n\n\t\t/**\n   * Number of child nodes in this document fragment.\n   *\n   * @readonly\n   * @type {Number}\n   */\n\n\t}, {\n\t\tkey: 'is',\n\n\n\t\t/**\n   * Checks whether given view tree object is of given type.\n   *\n   * Read more in {@link module:engine/view/node~Node#is}.\n   *\n   * @param {String} type\n   * @returns {Boolean}\n   */\n\t\tvalue: function is(type) {\n\t\t\treturn type == 'documentFragment';\n\t\t}\n\n\t\t/**\n   * {@link module:engine/view/documentfragment~DocumentFragment#insertChildren Insert} a child node or a list of child nodes at the end\n   * and sets the parent of these nodes to this fragment.\n   *\n   * @param {module:engine/view/node~Node|Iterable.<module:engine/view/node~Node>} nodes Node or the list of nodes to be inserted.\n   * @returns {Number} Number of appended nodes.\n   */\n\n\t}, {\n\t\tkey: 'appendChildren',\n\t\tvalue: function appendChildren(nodes) {\n\t\t\treturn this.insertChildren(this.childCount, nodes);\n\t\t}\n\n\t\t/**\n   * Gets child at the given index.\n   *\n   * @param {Number} index Index of child.\n   * @returns {module:engine/view/node~Node} Child node.\n   */\n\n\t}, {\n\t\tkey: 'getChild',\n\t\tvalue: function getChild(index) {\n\t\t\treturn this._children[index];\n\t\t}\n\n\t\t/**\n   * Gets index of the given child node. Returns `-1` if child node is not found.\n   *\n   * @param {module:engine/view/node~Node} node Child node.\n   * @returns {Number} Index of the child node.\n   */\n\n\t}, {\n\t\tkey: 'getChildIndex',\n\t\tvalue: function getChildIndex(node) {\n\t\t\treturn this._children.indexOf(node);\n\t\t}\n\n\t\t/**\n   * Gets child nodes iterator.\n   *\n   * @returns {Iterable.<module:engine/view/node~Node>} Child nodes iterator.\n   */\n\n\t}, {\n\t\tkey: 'getChildren',\n\t\tvalue: function getChildren() {\n\t\t\treturn this._children[Symbol.iterator]();\n\t\t}\n\n\t\t/**\n   * Inserts a child node or a list of child nodes on the given index and sets the parent of these nodes to\n   * this fragment.\n   *\n   * @param {Number} index Position where nodes should be inserted.\n   * @param {module:engine/view/node~Node|Iterable.<module:engine/view/node~Node>} nodes Node or list of nodes to be inserted.\n   * @returns {Number} Number of inserted nodes.\n   */\n\n\t}, {\n\t\tkey: 'insertChildren',\n\t\tvalue: function insertChildren(index, nodes) {\n\t\t\tthis._fireChange('children', this);\n\t\t\tvar count = 0;\n\n\t\t\tnodes = normalize(nodes);\n\n\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\tvar _didIteratorError = false;\n\t\t\tvar _iteratorError = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator = nodes[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\tvar node = _step.value;\n\n\t\t\t\t\tnode.parent = this;\n\n\t\t\t\t\tthis._children.splice(index, 0, node);\n\t\t\t\t\tindex++;\n\t\t\t\t\tcount++;\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError = true;\n\t\t\t\t_iteratorError = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn count;\n\t\t}\n\n\t\t/**\n   * Removes number of child nodes starting at the given index and set the parent of these nodes to `null`.\n   *\n   * @param {Number} index Number of the first node to remove.\n   * @param {Number} [howMany=1] Number of nodes to remove.\n   * @returns {Array.<module:engine/view/node~Node>} The array of removed nodes.\n   */\n\n\t}, {\n\t\tkey: 'removeChildren',\n\t\tvalue: function removeChildren(index) {\n\t\t\tvar howMany = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 1;\n\n\t\t\tthis._fireChange('children', this);\n\n\t\t\tfor (var i = index; i < index + howMany; i++) {\n\t\t\t\tthis._children[i].parent = null;\n\t\t\t}\n\n\t\t\treturn this._children.splice(index, howMany);\n\t\t}\n\n\t\t/**\n   * Fires `change` event with given type of the change.\n   *\n   * @private\n   * @param {module:engine/view/document~ChangeType} type Type of the change.\n   * @param {module:engine/view/node~Node} node Changed node.\n   * @fires module:engine/view/node~Node#change\n   */\n\n\t}, {\n\t\tkey: '_fireChange',\n\t\tvalue: function _fireChange(type, node) {\n\t\t\tthis.fire('change:' + type, node);\n\t\t}\n\t}, {\n\t\tkey: 'childCount',\n\t\tget: function get() {\n\t\t\treturn this._children.length;\n\t\t}\n\n\t\t/**\n   * Is `true` if there are no nodes inside this document fragment, `false` otherwise.\n   *\n   * @readonly\n   * @type {Boolean}\n   */\n\n\t}, {\n\t\tkey: 'isEmpty',\n\t\tget: function get() {\n\t\t\treturn this.childCount === 0;\n\t\t}\n\n\t\t/**\n   * Artificial root of `DocumentFragment`. Returns itself. Added for compatibility reasons.\n   *\n   * @readonly\n   * @type {module:engine/model/documentfragment~DocumentFragment}\n   */\n\n\t}, {\n\t\tkey: 'root',\n\t\tget: function get() {\n\t\t\treturn this;\n\t\t}\n\n\t\t/**\n   * Artificial parent of `DocumentFragment`. Returns `null`. Added for compatibility reasons.\n   *\n   * @readonly\n   * @type {null}\n   */\n\n\t}, {\n\t\tkey: 'parent',\n\t\tget: function get() {\n\t\t\treturn null;\n\t\t}\n\t}]);\n\n\treturn DocumentFragment;\n}();\n\nexports.default = DocumentFragment;\n\n\n(0, _mix2.default)(DocumentFragment, _emittermixin2.default);\n\n// Converts strings to Text and non-iterables to arrays.\n//\n// @param {String|module:engine/view/node~Node|Iterable.<String|module:engine/view/node~Node>}\n// @return {Iterable.<module:engine/view/node~Node>}\nfunction normalize(nodes) {\n\t// Separate condition because string is iterable.\n\tif (typeof nodes == 'string') {\n\t\treturn [new _text2.default(nodes)];\n\t}\n\n\tif (!(0, _isiterable2.default)(nodes)) {\n\t\tnodes = [nodes];\n\t}\n\n\t// Array.from to enable .map() on non-arrays.\n\treturn Array.from(nodes).map(function (node) {\n\t\treturn typeof node == 'string' ? new _text2.default(node) : node;\n\t});\n}\n\n/***/ }),\n/* 117 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/matcher\n */\n\n/**\n * View matcher class.\n * Instance of this class can be used to find {@link module:engine/view/element~Element elements} that match given pattern.\n */\nvar Matcher = function () {\n\t/**\n  * Creates new instance of Matcher.\n  *\n  * @param {String|RegExp|Object} [pattern] Match patterns. See {@link module:engine/view/matcher~Matcher#add add method} for\n  * more information.\n  */\n\tfunction Matcher() {\n\t\t_classCallCheck(this, Matcher);\n\n\t\tthis._patterns = [];\n\n\t\tthis.add.apply(this, arguments);\n\t}\n\n\t/**\n  * Adds pattern or patterns to matcher instance.\n  *\n  * Example patterns matching element's name:\n  *\n  *\t\t// String.\n  *\t\tmatcher.add( 'div' );\n  *\t\tmatcher.add( { name: 'div' } );\n  *\n  *\t\t// Regular expression.\n  *\t\tmatcher.add( /^\\w/ );\n  *\t\tmatcher.add( { name: /^\\w/ } );\n  *\n  * Example pattern matching element's attributes:\n  *\n  *\t\tmatcher.add( {\n  *\t\t\tattributes: {\n  *\t\t\t\ttitle: 'foobar',\n  *\t\t\t\tfoo: /^\\w+/\n  *\t\t\t}\n  *\t\t} );\n  *\n  * Example patterns matching element's classes:\n  *\n  *\t\t// Single class.\n  *\t\tmatcher.add( {\n  *\t\t\tclass: 'foobar'\n  *\t\t} );\n  *\n  *\t\t// Single class using regular expression.\n  *\t\tmatcher.add( {\n  *\t\t\tclass: /foo.../\n  *\t\t} );\n  *\n  *\t\t// Multiple classes to match.\n  *\t\tmatcher.add( {\n  *\t\t\tclass: [ 'baz', 'bar', /foo.../ ]\n  *\t\t} ):\n  *\n  * Example pattern matching element's styles:\n  *\n  *\t\tmatcher.add( {\n  *\t\t\tstyle: {\n  *\t\t\t\tposition: 'absolute',\n  *\t\t\t\tcolor: /^\\w*blue$/\n  *\t\t\t}\n  *\t\t} );\n  *\n  * Example function pattern:\n  *\n  *\t\tmatcher.add( ( element ) => {\n  *\t\t\t// Result of this function will be included in `match`\n  *\t\t\t// property of the object returned from matcher.match() call.\n  *\t\t\tif ( element.name === 'div' && element.childCount > 0 ) {\n  *\t\t\t\treturn { name: true };\n  *\t\t\t}\n  *\n  *\t\t\treturn null;\n  *\t\t} );\n  *\n  * Multiple patterns can be added in one call:\n  *\n  * \t\tmatcher.add( 'div', { class: 'foobar' } );\n  *\n  * @param {Object|String|RegExp|Function} pattern Object describing pattern details. If string or regular expression\n  * is provided it will be used to match element's name. Pattern can be also provided in a form\n  * of a function - then this function will be called with each {@link module:engine/view/element~Element element} as a parameter.\n  * Function's return value will be stored under `match` key of the object returned from\n  * {@link module:engine/view/matcher~Matcher#match match} or {@link module:engine/view/matcher~Matcher#matchAll matchAll} methods.\n  * @param {String|RegExp} [pattern.name] Name or regular expression to match element's name.\n  * @param {Object} [pattern.attribute] Object with key-value pairs representing attributes to match. Each object key\n  * represents attribute name. Value under that key can be either a string or a regular expression and it will be\n  * used to match attribute value.\n  * @param {String|RegExp|Array} [pattern.class] Class name or array of class names to match. Each name can be\n  * provided in a form of string or regular expression.\n  * @param {Object} [pattern.style] Object with key-value pairs representing styles to match. Each object key\n  * represents style name. Value under that key can be either a string or a regular expression and it will be used\n  * to match style value.\n  */\n\n\n\t_createClass(Matcher, [{\n\t\tkey: 'add',\n\t\tvalue: function add() {\n\t\t\tfor (var _len = arguments.length, pattern = Array(_len), _key = 0; _key < _len; _key++) {\n\t\t\t\tpattern[_key] = arguments[_key];\n\t\t\t}\n\n\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\tvar _didIteratorError = false;\n\t\t\tvar _iteratorError = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator = pattern[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\tvar item = _step.value;\n\n\t\t\t\t\t// String or RegExp pattern is used as element's name.\n\t\t\t\t\tif (typeof item == 'string' || item instanceof RegExp) {\n\t\t\t\t\t\titem = { name: item };\n\t\t\t\t\t}\n\n\t\t\t\t\t// Single class name/RegExp can be provided.\n\t\t\t\t\tif (item.class && (typeof item.class == 'string' || item.class instanceof RegExp)) {\n\t\t\t\t\t\titem.class = [item.class];\n\t\t\t\t\t}\n\n\t\t\t\t\tthis._patterns.push(item);\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError = true;\n\t\t\t\t_iteratorError = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Matches elements for currently stored patterns. Returns match information about first found\n   * {@link module:engine/view/element~Element element}, otherwise returns `null`.\n   *\n   * Example of returned object:\n   *\n   *\t\t{\n   *\t\t\telement: <instance of found element>,\n   *\t\t\tpattern: <pattern used to match found element>,\n   *\t\t\tmatch: {\n   *\t\t\t\tname: true,\n  \t *\t\t\t\tattributes: [ 'title', 'href' ],\n   *\t\t\t\tclasses: [ 'foo' ],\n  \t *\t\t\t\tstyles: [ 'color', 'position' ]\n   *\t\t\t}\n   *\t\t}\n   *\n   * @see module:engine/view/matcher~Matcher#add\n   * @see module:engine/view/matcher~Matcher#matchAll\n   * @param {...module:engine/view/element~Element} element View element to match against stored patterns.\n   * @returns {Object|null} result\n   * @returns {module:engine/view/element~Element} result.element Matched view element.\n   * @returns {Object|String|RegExp|Function} result.pattern Pattern that was used to find matched element.\n   * @returns {Object} result.match Object representing matched element parts.\n   * @returns {Boolean} [result.match.name] True if name of the element was matched.\n   * @returns {Array} [result.match.attribute] Array with matched attribute names.\n   * @returns {Array} [result.match.class] Array with matched class names.\n   * @returns {Array} [result.match.style] Array with matched style names.\n   */\n\n\t}, {\n\t\tkey: 'match',\n\t\tvalue: function match() {\n\t\t\tfor (var _len2 = arguments.length, element = Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {\n\t\t\t\telement[_key2] = arguments[_key2];\n\t\t\t}\n\n\t\t\tvar _iteratorNormalCompletion2 = true;\n\t\t\tvar _didIteratorError2 = false;\n\t\t\tvar _iteratorError2 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator2 = element[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {\n\t\t\t\t\tvar singleElement = _step2.value;\n\t\t\t\t\tvar _iteratorNormalCompletion3 = true;\n\t\t\t\t\tvar _didIteratorError3 = false;\n\t\t\t\t\tvar _iteratorError3 = undefined;\n\n\t\t\t\t\ttry {\n\t\t\t\t\t\tfor (var _iterator3 = this._patterns[Symbol.iterator](), _step3; !(_iteratorNormalCompletion3 = (_step3 = _iterator3.next()).done); _iteratorNormalCompletion3 = true) {\n\t\t\t\t\t\t\tvar _pattern = _step3.value;\n\n\t\t\t\t\t\t\tvar match = isElementMatching(singleElement, _pattern);\n\n\t\t\t\t\t\t\tif (match) {\n\t\t\t\t\t\t\t\treturn {\n\t\t\t\t\t\t\t\t\telement: singleElement,\n\t\t\t\t\t\t\t\t\tpattern: _pattern,\n\t\t\t\t\t\t\t\t\tmatch: match\n\t\t\t\t\t\t\t\t};\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t} catch (err) {\n\t\t\t\t\t\t_didIteratorError3 = true;\n\t\t\t\t\t\t_iteratorError3 = err;\n\t\t\t\t\t} finally {\n\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\tif (!_iteratorNormalCompletion3 && _iterator3.return) {\n\t\t\t\t\t\t\t\t_iterator3.return();\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} finally {\n\t\t\t\t\t\t\tif (_didIteratorError3) {\n\t\t\t\t\t\t\t\tthrow _iteratorError3;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError2 = true;\n\t\t\t\t_iteratorError2 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion2 && _iterator2.return) {\n\t\t\t\t\t\t_iterator2.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError2) {\n\t\t\t\t\t\tthrow _iteratorError2;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn null;\n\t\t}\n\n\t\t/**\n   * Matches elements for currently stored patterns. Returns array of match information with all found\n   * {@link module:engine/view/element~Element elements}. If no element is found - returns `null`.\n   *\n   * @see module:engine/view/matcher~Matcher#add\n   * @see module:engine/view/matcher~Matcher#match\n   * @param {...module:engine/view/element~Element} element View element to match against stored patterns.\n   * @returns {Array.<Object>|null} Array with match information about found elements or `null`. For more information\n   * see {@link module:engine/view/matcher~Matcher#match match method} description.\n   */\n\n\t}, {\n\t\tkey: 'matchAll',\n\t\tvalue: function matchAll() {\n\t\t\tvar results = [];\n\n\t\t\tfor (var _len3 = arguments.length, element = Array(_len3), _key3 = 0; _key3 < _len3; _key3++) {\n\t\t\t\telement[_key3] = arguments[_key3];\n\t\t\t}\n\n\t\t\tvar _iteratorNormalCompletion4 = true;\n\t\t\tvar _didIteratorError4 = false;\n\t\t\tvar _iteratorError4 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator4 = element[Symbol.iterator](), _step4; !(_iteratorNormalCompletion4 = (_step4 = _iterator4.next()).done); _iteratorNormalCompletion4 = true) {\n\t\t\t\t\tvar singleElement = _step4.value;\n\t\t\t\t\tvar _iteratorNormalCompletion5 = true;\n\t\t\t\t\tvar _didIteratorError5 = false;\n\t\t\t\t\tvar _iteratorError5 = undefined;\n\n\t\t\t\t\ttry {\n\t\t\t\t\t\tfor (var _iterator5 = this._patterns[Symbol.iterator](), _step5; !(_iteratorNormalCompletion5 = (_step5 = _iterator5.next()).done); _iteratorNormalCompletion5 = true) {\n\t\t\t\t\t\t\tvar _pattern2 = _step5.value;\n\n\t\t\t\t\t\t\tvar match = isElementMatching(singleElement, _pattern2);\n\n\t\t\t\t\t\t\tif (match) {\n\t\t\t\t\t\t\t\tresults.push({\n\t\t\t\t\t\t\t\t\telement: singleElement,\n\t\t\t\t\t\t\t\t\tpattern: _pattern2,\n\t\t\t\t\t\t\t\t\tmatch: match\n\t\t\t\t\t\t\t\t});\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t} catch (err) {\n\t\t\t\t\t\t_didIteratorError5 = true;\n\t\t\t\t\t\t_iteratorError5 = err;\n\t\t\t\t\t} finally {\n\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\tif (!_iteratorNormalCompletion5 && _iterator5.return) {\n\t\t\t\t\t\t\t\t_iterator5.return();\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} finally {\n\t\t\t\t\t\t\tif (_didIteratorError5) {\n\t\t\t\t\t\t\t\tthrow _iteratorError5;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError4 = true;\n\t\t\t\t_iteratorError4 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion4 && _iterator4.return) {\n\t\t\t\t\t\t_iterator4.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError4) {\n\t\t\t\t\t\tthrow _iteratorError4;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn results.length > 0 ? results : null;\n\t\t}\n\n\t\t/**\n   * Returns the name of the element to match if there is exactly one pattern added to the matcher instance\n   * and it matches element name defined by `string` (not `RegExp`). Otherwise, returns `null`.\n   *\n   * @returns {String|null} Element name trying to match.\n   */\n\n\t}, {\n\t\tkey: 'getElementName',\n\t\tvalue: function getElementName() {\n\t\t\tif (this._patterns.length !== 1) {\n\t\t\t\treturn null;\n\t\t\t}\n\n\t\t\tvar pattern = this._patterns[0];\n\t\t\tvar name = pattern.name;\n\n\t\t\treturn typeof pattern != 'function' && name && !(name instanceof RegExp) ? name : null;\n\t\t}\n\t}]);\n\n\treturn Matcher;\n}();\n\n// Returns match information if {@link module:engine/view/element~Element element} is matching provided pattern.\n// If element cannot be matched to provided pattern - returns `null`.\n//\n// @param {module:engine/view/element~Element} element\n// @param {Object|String|RegExp|Function} pattern\n// @returns {Object|null} Returns object with match information or null if element is not matching.\n\n\nexports.default = Matcher;\nfunction isElementMatching(element, pattern) {\n\t// If pattern is provided as function - return result of that function;\n\tif (typeof pattern == 'function') {\n\t\treturn pattern(element);\n\t}\n\n\tvar match = {};\n\t// Check element's name.\n\tif (pattern.name) {\n\t\tmatch.name = matchName(pattern.name, element.name);\n\n\t\tif (!match.name) {\n\t\t\treturn null;\n\t\t}\n\t}\n\n\t// Check element's attributes.\n\tif (pattern.attribute) {\n\t\tmatch.attribute = matchAttributes(pattern.attribute, element);\n\n\t\tif (!match.attribute) {\n\t\t\treturn null;\n\t\t}\n\t}\n\n\t// Check element's classes.\n\tif (pattern.class) {\n\t\tmatch.class = matchClasses(pattern.class, element);\n\n\t\tif (!match.class) {\n\t\t\treturn false;\n\t\t}\n\t}\n\n\t// Check element's styles.\n\tif (pattern.style) {\n\t\tmatch.style = matchStyles(pattern.style, element);\n\n\t\tif (!match.style) {\n\t\t\treturn false;\n\t\t}\n\t}\n\n\treturn match;\n}\n\n// Checks if name can be matched by provided pattern.\n//\n// @param {String|RegExp} pattern\n// @param {String} name\n// @returns {Boolean} Returns `true` if name can be matched, `false` otherwise.\nfunction matchName(pattern, name) {\n\t// If pattern is provided as RegExp - test against this regexp.\n\tif (pattern instanceof RegExp) {\n\t\treturn pattern.test(name);\n\t}\n\n\treturn pattern === name;\n}\n\n// Checks if attributes of provided element can be matched against provided patterns.\n//\n// @param {Object} patterns Object with information about attributes to match. Each key of the object will be\n// used as attribute name. Value of each key can be a string or regular expression to match against attribute value.\n// @param {module:engine/view/element~Element} element Element which attributes will be tested.\n// @returns {Array|null} Returns array with matched attribute names or `null` if no attributes were matched.\nfunction matchAttributes(patterns, element) {\n\tvar match = [];\n\n\tfor (var name in patterns) {\n\t\tvar pattern = patterns[name];\n\n\t\tif (element.hasAttribute(name)) {\n\t\t\tvar attribute = element.getAttribute(name);\n\n\t\t\tif (pattern instanceof RegExp) {\n\t\t\t\tif (pattern.test(attribute)) {\n\t\t\t\t\tmatch.push(name);\n\t\t\t\t} else {\n\t\t\t\t\treturn null;\n\t\t\t\t}\n\t\t\t} else if (attribute === pattern) {\n\t\t\t\tmatch.push(name);\n\t\t\t} else {\n\t\t\t\treturn null;\n\t\t\t}\n\t\t} else {\n\t\t\treturn null;\n\t\t}\n\t}\n\n\treturn match;\n}\n\n// Checks if classes of provided element can be matched against provided patterns.\n//\n// @param {Array.<String|RegExp>} patterns Array of strings or regular expressions to match against element's classes.\n// @param {module:engine/view/element~Element} element Element which classes will be tested.\n// @returns {Array|null} Returns array with matched class names or `null` if no classes were matched.\nfunction matchClasses(patterns, element) {\n\tvar match = [];\n\n\tvar _iteratorNormalCompletion6 = true;\n\tvar _didIteratorError6 = false;\n\tvar _iteratorError6 = undefined;\n\n\ttry {\n\t\tfor (var _iterator6 = patterns[Symbol.iterator](), _step6; !(_iteratorNormalCompletion6 = (_step6 = _iterator6.next()).done); _iteratorNormalCompletion6 = true) {\n\t\t\tvar pattern = _step6.value;\n\n\t\t\tif (pattern instanceof RegExp) {\n\t\t\t\tvar classes = element.getClassNames();\n\n\t\t\t\tvar _iteratorNormalCompletion7 = true;\n\t\t\t\tvar _didIteratorError7 = false;\n\t\t\t\tvar _iteratorError7 = undefined;\n\n\t\t\t\ttry {\n\t\t\t\t\tfor (var _iterator7 = classes[Symbol.iterator](), _step7; !(_iteratorNormalCompletion7 = (_step7 = _iterator7.next()).done); _iteratorNormalCompletion7 = true) {\n\t\t\t\t\t\tvar name = _step7.value;\n\n\t\t\t\t\t\tif (pattern.test(name)) {\n\t\t\t\t\t\t\tmatch.push(name);\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t} catch (err) {\n\t\t\t\t\t_didIteratorError7 = true;\n\t\t\t\t\t_iteratorError7 = err;\n\t\t\t\t} finally {\n\t\t\t\t\ttry {\n\t\t\t\t\t\tif (!_iteratorNormalCompletion7 && _iterator7.return) {\n\t\t\t\t\t\t\t_iterator7.return();\n\t\t\t\t\t\t}\n\t\t\t\t\t} finally {\n\t\t\t\t\t\tif (_didIteratorError7) {\n\t\t\t\t\t\t\tthrow _iteratorError7;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\tif (match.length === 0) {\n\t\t\t\t\treturn null;\n\t\t\t\t}\n\t\t\t} else if (element.hasClass(pattern)) {\n\t\t\t\tmatch.push(pattern);\n\t\t\t} else {\n\t\t\t\treturn null;\n\t\t\t}\n\t\t}\n\t} catch (err) {\n\t\t_didIteratorError6 = true;\n\t\t_iteratorError6 = err;\n\t} finally {\n\t\ttry {\n\t\t\tif (!_iteratorNormalCompletion6 && _iterator6.return) {\n\t\t\t\t_iterator6.return();\n\t\t\t}\n\t\t} finally {\n\t\t\tif (_didIteratorError6) {\n\t\t\t\tthrow _iteratorError6;\n\t\t\t}\n\t\t}\n\t}\n\n\treturn match;\n}\n\n// Checks if styles of provided element can be matched against provided patterns.\n//\n// @param {Object} patterns Object with information about styles to match. Each key of the object will be\n// used as style name. Value of each key can be a string or regular expression to match against style value.\n// @param {module:engine/view/element~Element} element Element which styles will be tested.\n// @returns {Array|null} Returns array with matched style names or `null` if no styles were matched.\nfunction matchStyles(patterns, element) {\n\tvar match = [];\n\n\tfor (var name in patterns) {\n\t\tvar pattern = patterns[name];\n\n\t\tif (element.hasStyle(name)) {\n\t\t\tvar style = element.getStyle(name);\n\n\t\t\tif (pattern instanceof RegExp) {\n\t\t\t\tif (pattern.test(style)) {\n\t\t\t\t\tmatch.push(name);\n\t\t\t\t} else {\n\t\t\t\t\treturn null;\n\t\t\t\t}\n\t\t\t} else if (style === pattern) {\n\t\t\t\tmatch.push(name);\n\t\t\t} else {\n\t\t\t\treturn null;\n\t\t\t}\n\t\t} else {\n\t\t\treturn null;\n\t\t}\n\t}\n\n\treturn match;\n}\n\n/***/ }),\n/* 118 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module engine/view/observer/domeventdata\n */\n\nvar _extend = __webpack_require__(53);\n\nvar _extend2 = _interopRequireDefault(_extend);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * Information about a DOM event in context of the {@link module:engine/view/document~Document}.\n * It wraps the native event, which usually should not be used as the wrapper contains\n * additional data (like key code for keyboard events).\n */\nvar DomEventData = function () {\n\t/**\n  * @param {module:engine/view/document~Document} document The instance of the tree view Document.\n  * @param {Event} domEvent The DOM event.\n  * @param {Object} [additionalData] Additional properties that the instance should contain.\n  */\n\tfunction DomEventData(document, domEvent, additionalData) {\n\t\t_classCallCheck(this, DomEventData);\n\n\t\t/**\n   * The instance of the document.\n   *\n   * @readonly\n   * @member {module:engine/view/document~Document} module:engine/view/observer/observer~Observer.DomEvent#view\n   */\n\t\tthis.document = document;\n\n\t\t/**\n   * The DOM event.\n   *\n   * @readonly\n   * @member {Event} module:engine/view/observer/observer~Observer.DomEvent#domEvent\n   */\n\t\tthis.domEvent = domEvent;\n\n\t\t/**\n   * The DOM target.\n   *\n   * @readonly\n   * @member {HTMLElement} module:engine/view/observer/observer~Observer.DomEvent#target\n   */\n\t\tthis.domTarget = domEvent.target;\n\n\t\t(0, _extend2.default)(this, additionalData);\n\t}\n\n\t/**\n  * The tree view element representing the target.\n  *\n  * @readonly\n  * @type module:engine/view/element~Element\n  */\n\n\n\t_createClass(DomEventData, [{\n\t\tkey: 'preventDefault',\n\n\n\t\t/**\n   * Prevents the native's event default action.\n   */\n\t\tvalue: function preventDefault() {\n\t\t\tthis.domEvent.preventDefault();\n\t\t}\n\n\t\t/**\n   * Stops native event propagation.\n   */\n\n\t}, {\n\t\tkey: 'stopPropagation',\n\t\tvalue: function stopPropagation() {\n\t\t\tthis.domEvent.stopPropagation();\n\t\t}\n\t}, {\n\t\tkey: 'target',\n\t\tget: function get() {\n\t\t\treturn this.document.domConverter.getCorrespondingViewElement(this.domTarget);\n\t\t}\n\t}]);\n\n\treturn DomEventData;\n}();\n\nexports.default = DomEventData;\n\n/***/ }),\n/* 119 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.isWidget = isWidget;\nexports.widgetize = widgetize;\nexports.setLabel = setLabel;\nexports.getLabel = getLabel;\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module image/widget/utils\n */\n\nvar widgetSymbol = Symbol('isWidget');\nvar labelSymbol = Symbol('label');\n\n/**\n * CSS class added to each widget element.\n *\n * @const {String}\n */\nvar WIDGET_CLASS_NAME = exports.WIDGET_CLASS_NAME = 'ck-widget';\n\n/**\n * CSS class added to currently selected widget element.\n *\n * @const {String}\n */\nvar WIDGET_SELECTED_CLASS_NAME = exports.WIDGET_SELECTED_CLASS_NAME = 'ck-widget_selected';\n\n/**\n * Returns `true` if given {@link module:engine/view/element~Element} is a widget.\n *\n * @param {module:engine/view/element~Element} element\n * @returns {Boolean}\n */\nfunction isWidget(element) {\n  return !!element.getCustomProperty(widgetSymbol);\n}\n\n/**\n * \"Widgetizes\" given {@link module:engine/view/element~Element}:\n * * sets `contenteditable` attribute to `true`,\n * * adds custom `getFillerOffset` method returning `null`,\n * * adds `ck-widget` CSS class,\n * * adds custom property allowing to recognize widget elements by using {@link ~isWidget}.\n *\n * @param {module:engine/view/element~Element} element\n * @param {Object} [options]\n * @param {String|Function} [options.label] Element's label provided to {@link ~setLabel} function. It can be passed as\n * a plain string or a function returning a string.\n * @returns {module:engine/view/element~Element} Returns same element.\n */\nfunction widgetize(element, options) {\n  options = options || {};\n  element.setAttribute('contenteditable', false);\n  element.getFillerOffset = getFillerOffset;\n  element.addClass(WIDGET_CLASS_NAME);\n  element.setCustomProperty(widgetSymbol, true);\n\n  if (options.label) {\n    setLabel(element, options.label);\n  }\n\n  return element;\n}\n\n/**\n * Sets label for given element.\n * It can be passed as a plain string or a function returning a string. Function will be called each time label is retrieved by\n * {@link ~getLabel}.\n *\n * @param {module:engine/view/element~Element} element\n * @param {String|Function} labelOrCreator\n */\nfunction setLabel(element, labelOrCreator) {\n  element.setCustomProperty(labelSymbol, labelOrCreator);\n}\n\n/**\n * Returns label for provided element.\n *\n * @param {module:engine/view/element~Element} element\n * @return {String}\n */\nfunction getLabel(element) {\n  var labelCreator = element.getCustomProperty(labelSymbol);\n\n  if (!labelCreator) {\n    return '';\n  }\n\n  return typeof labelCreator == 'function' ? labelCreator() : labelCreator;\n}\n\n// Default filler offset function applied to all widget elements.\n//\n// @returns {null}\nfunction getFillerOffset() {\n  return null;\n}\n\n/***/ }),\n/* 120 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * @license Copyright (c) 2003-2016, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/focuscycler\n */\n\n/**\n * Helps cycling over focusable views in a {@link module:ui/viewcollection~ViewCollection}\n * when the focus is tracked by {@link module:utils/focustracker~FocusTracker} instance.\n *\n * It requires a collection of focusable views and associated focus tracker:\n *\n *\t\tconst focusables = new ViewCollection();\n *\t\tconst focusTracker = new FocusTracker();\n *\n *\t\t// Add focusables to the focus tracker.\n *\t\tfocusTracker.add( ... );\n *\n * The cycler can be used manually:\n *\n *\t\tconst cycler = new FocusCycler( { focusables, focusTracker } );\n *\n *\t\t// Will focus the first forusable view in #focusables.\n *\t\tcycler.focusFirst();\n *\n *\t\t// Will log next focusable item in #focusables.\n *\t\tconsole.log( cycler.next );\n *\n * or it can be used as an automated, keystroke–detecting utility:\n *\n *\t\tconst keystrokeHandler = new KeystrokeHandler();\n *\n *\t\t// Activate the keystroke handler.\n *\t\tkeystrokeHandler.listenTo( sourceOfEvents );\n *\n *\t\tconst cycler = new FocusCycler( {\n *\t\t\tfocusables, focusTracker, keystrokeHandler,\n *\t\t\tactions: {\n *\t\t\t\t// When arrowup of arrowleft is detected by the #keystrokeHandler\n *\t\t\t\t// focusPrevious() will be called by the cycler.\n *\t\t\t\tfocusPrevious: [ 'arrowup', 'arrowleft' ],\n *\t\t\t}\n *\t\t} );\n */\nvar FocusCycler = function () {\n\t/**\n  * Creates an instance of the focus cycler utility.\n  *\n  * @param {Object} options Configuration options.\n  * @param {module:utils/collection~Collection|Object} options.focusables\n  * @param {module:utils/focustracker~FocusTracker} options.focusTracker\n  * @param {module:core/keystrokehandler~KeystrokeHandler} [options.keystrokeHandler]\n  * @param {Object} [options.actions]\n  */\n\tfunction FocusCycler(options) {\n\t\tvar _this = this;\n\n\t\t_classCallCheck(this, FocusCycler);\n\n\t\tObject.assign(this, options);\n\n\t\t/**\n   * A view collection the cycler operates on.\n   *\n   * @readonly\n   * @member {module:utils/collection~Collection} #focusables\n   */\n\n\t\t/**\n   * A focus tracker instance that cycler uses to determine focus\n   * state in {@link #viewCollection}.\n   *\n   * @readonly\n   * @member {module:utils/focustracker~FocusTracker} #focusTracker\n   */\n\n\t\t/**\n   * Instance of the {@link module:core/keystrokehandler~KeystrokeHandler}.\n   *\n   * @readonly\n   * @member {module:core/keystrokehandler~KeystrokeHandler} #keystrokeHandler\n   */\n\n\t\t/**\n   * Actions that the cycler can take when a keystroke is pressed. Requires\n   * `options.keystrokeHandler` to be passed and working. When an action is\n   * performed, the event the keystroke fired is will be `preventDefault` and\n   * `stopPropagation` in DOM.\n   *\n   *\t\tactions: {\n   *\t\t\t// Will call #focusPrevious() when arrowleft or arrowup is pressed.\n   *\t\t\tfocusPrevious: [ 'arrowleft', 'arrowup' ],\n   *\n   *\t\t\t// Will call #focusNext() when arrowdown is pressed.\n   *\t\t\tfocusNext: 'arrowdown'\n   *\t\t}\n   *\n   * @readonly\n   * @member {Object} #actions\n   */\n\n\t\tif (options.actions && options.keystrokeHandler) {\n\t\t\tvar _loop = function _loop(methodName) {\n\t\t\t\tvar actions = options.actions[methodName];\n\n\t\t\t\tif (typeof actions == 'string') {\n\t\t\t\t\tactions = [actions];\n\t\t\t\t}\n\n\t\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\t\tvar _didIteratorError = false;\n\t\t\t\tvar _iteratorError = undefined;\n\n\t\t\t\ttry {\n\t\t\t\t\tfor (var _iterator = actions[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\t\tvar keystroke = _step.value;\n\n\t\t\t\t\t\toptions.keystrokeHandler.set(keystroke, function (data, cancel) {\n\t\t\t\t\t\t\t_this[methodName]();\n\t\t\t\t\t\t\tcancel();\n\t\t\t\t\t\t});\n\t\t\t\t\t}\n\t\t\t\t} catch (err) {\n\t\t\t\t\t_didIteratorError = true;\n\t\t\t\t\t_iteratorError = err;\n\t\t\t\t} finally {\n\t\t\t\t\ttry {\n\t\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t\t}\n\t\t\t\t\t} finally {\n\t\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t};\n\n\t\t\tfor (var methodName in options.actions) {\n\t\t\t\t_loop(methodName);\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n  * Returns the first focusable view in {@link #viewCollection}.\n  * `null` if there's none.\n  *\n  * @readonly\n  * @member {module:ui/view~View|null} #first\n  */\n\n\n\t_createClass(FocusCycler, [{\n\t\tkey: 'focusFirst',\n\n\n\t\t/**\n   * Focuses the {@link #first} item.\n   */\n\t\tvalue: function focusFirst() {\n\t\t\tthis._focus(this.first);\n\t\t}\n\n\t\t/**\n   * Focuses the {@link #last} item.\n   */\n\n\t}, {\n\t\tkey: 'focusLast',\n\t\tvalue: function focusLast() {\n\t\t\tthis._focus(this.last);\n\t\t}\n\n\t\t/**\n   * Focuses the {@link #next} item.\n   */\n\n\t}, {\n\t\tkey: 'focusNext',\n\t\tvalue: function focusNext() {\n\t\t\tthis._focus(this.next);\n\t\t}\n\n\t\t/**\n   * Focuses the {@link #previous} item.\n   */\n\n\t}, {\n\t\tkey: 'focusPrevious',\n\t\tvalue: function focusPrevious() {\n\t\t\tthis._focus(this.previous);\n\t\t}\n\n\t\t/**\n   * Focuses the given view, if exists.\n   *\n   * @protected\n   * @param {module:ui/view~View} view\n   */\n\n\t}, {\n\t\tkey: '_focus',\n\t\tvalue: function _focus(view) {\n\t\t\tif (view) {\n\t\t\t\tview.focus();\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Returns the next/previous focusable view in {@link #viewCollection} with respect\n   * to {@link #current}.\n   *\n   * @protected\n   * @param {Number} step Either `1` for checking forward of {@link #current} or\n   * `-1` for checking backwards.\n   * @returns {module:ui/view~View|null}\n   */\n\n\t}, {\n\t\tkey: '_getFocusableItem',\n\t\tvalue: function _getFocusableItem(step) {\n\t\t\t// Cache for speed.\n\t\t\tvar current = this.current;\n\t\t\tvar collectionLength = this.focusables.length;\n\n\t\t\tif (!collectionLength || current === null) {\n\t\t\t\treturn null;\n\t\t\t}\n\n\t\t\t// Cycle in both directions.\n\t\t\tvar index = (current + collectionLength + step) % collectionLength;\n\n\t\t\tdo {\n\t\t\t\tvar view = this.focusables.get(index);\n\n\t\t\t\t// TODO: Check if view is visible.\n\t\t\t\tif (isFocusable(view)) {\n\t\t\t\t\treturn view;\n\t\t\t\t}\n\n\t\t\t\t// Cycle in both directions.\n\t\t\t\tindex = (index + collectionLength + step) % collectionLength;\n\t\t\t} while (index !== current);\n\n\t\t\treturn null;\n\t\t}\n\t}, {\n\t\tkey: 'first',\n\t\tget: function get() {\n\t\t\treturn this.focusables.find(isFocusable) || null;\n\t\t}\n\n\t\t/**\n   * Returns the last focusable view in {@link #viewCollection}.\n   * `null` if there's none.\n   *\n   * @readonly\n   * @member {module:ui/view~View|null} #last\n   */\n\n\t}, {\n\t\tkey: 'last',\n\t\tget: function get() {\n\t\t\treturn this.focusables.filter(isFocusable).slice(-1)[0] || null;\n\t\t}\n\n\t\t/**\n   * Returns the next focusable view in {@link #viewCollection} based on {@link #current}.\n   * `null` if there's none.\n   *\n   * @readonly\n   * @member {module:ui/view~View|null} #next\n   */\n\n\t}, {\n\t\tkey: 'next',\n\t\tget: function get() {\n\t\t\treturn this._getFocusableItem(1);\n\t\t}\n\n\t\t/**\n   * Returns the previous focusable view in {@link #viewCollection} based on {@link #current}.\n   * `null` if there's none.\n   *\n   * @readonly\n   * @member {module:ui/view~View|null} #previous\n   */\n\n\t}, {\n\t\tkey: 'previous',\n\t\tget: function get() {\n\t\t\treturn this._getFocusableItem(-1);\n\t\t}\n\n\t\t/**\n   * An index of the view in the {@link #viewCollection} which is focused according\n   * to {@link #focusTracker}. `null` when there's no such view.\n   *\n   * @readonly\n   * @member {Number|null} #current\n   */\n\n\t}, {\n\t\tkey: 'current',\n\t\tget: function get() {\n\t\t\tvar _this2 = this;\n\n\t\t\tvar index = null;\n\n\t\t\t// There's no focused view in the viewCollection.\n\t\t\tif (this.focusTracker.focusedElement === null) {\n\t\t\t\treturn null;\n\t\t\t}\n\n\t\t\tthis.focusables.find(function (view, viewIndex) {\n\t\t\t\tvar focused = view.element === _this2.focusTracker.focusedElement;\n\n\t\t\t\tif (focused) {\n\t\t\t\t\tindex = viewIndex;\n\t\t\t\t}\n\n\t\t\t\treturn focused;\n\t\t\t});\n\n\t\t\treturn index;\n\t\t}\n\t}]);\n\n\treturn FocusCycler;\n}();\n\n// Checks whether an view is focusable.\n//\n// @private\n// @param {module:ui/view~View} view A view to be checked.\n// @returns {Boolean}\n\n\nexports.default = FocusCycler;\nfunction isFocusable(view) {\n\treturn view.focus;\n}\n\n/***/ }),\n/* 121 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if (\"value\" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nvar _observablemixin = __webpack_require__(31);\n\nvar _observablemixin2 = _interopRequireDefault(_observablemixin);\n\nvar _collection = __webpack_require__(78);\n\nvar _collection2 = _interopRequireDefault(_collection);\n\nvar _mix = __webpack_require__(4);\n\nvar _mix2 = _interopRequireDefault(_mix);\n\nvar _view = __webpack_require__(7);\n\nvar _view2 = _interopRequireDefault(_view);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module ui/viewcollection\n */\n\n/**\n * Collects {@link module:ui/view~View} instances.\n *\n * @extends module:utils/collection~Collection\n * @mixes module:utils/observablemixin~ObservableMixin\n */\nvar ViewCollection = function (_Collection) {\n\t_inherits(ViewCollection, _Collection);\n\n\t/**\n  * Creates a new {@link module:ui/viewcollection~ViewCollection} instance.\n  *\n  * @param {module:utils/locale~Locale} [locale] The {@link module:core/editor~Editor editor's locale} instance.\n  */\n\tfunction ViewCollection(locale) {\n\t\t_classCallCheck(this, ViewCollection);\n\n\t\t// Handle {@link module:ui/view~View#element} in DOM when a new view is added to the collection.\n\t\tvar _this = _possibleConstructorReturn(this, (ViewCollection.__proto__ || Object.getPrototypeOf(ViewCollection)).call(this, {\n\t\t\t// An #id Number attribute should be legal and not break the `ViewCollection` instance.\n\t\t\t// https://github.com/ckeditor/ckeditor5-ui/issues/93\n\t\t\tidProperty: 'viewUid'\n\t\t}));\n\n\t\t_this.on('add', function (evt, view, index) {\n\t\t\tif (view.element && _this._parentElement) {\n\t\t\t\t_this._parentElement.insertBefore(view.element, _this._parentElement.children[index]);\n\t\t\t}\n\t\t});\n\n\t\t// Handle {@link module:ui/view~View#element} in DOM when a view is removed from the collection.\n\t\t_this.on('remove', function (evt, view) {\n\t\t\tif (view.element && _this._parentElement) {\n\t\t\t\tview.element.remove();\n\t\t\t}\n\t\t});\n\n\t\t/**\n   * The {@link module:core/editor~Editor editor's locale} instance.\n   *\n   * @member {module:utils/locale~Locale}\n   */\n\t\t_this.locale = locale;\n\n\t\t/**\n   * Set to `true` once the parent's {@link module:ui/view~View#ready} is true, which means\n   * that all the views in the collection are also ready (which can be asynchronous).\n   *\n   * @readonly\n   * @observable\n   * @member {Boolean} #ready\n   */\n\t\t_this.set('ready', false);\n\n\t\t/**\n   * A parent element within which child views are rendered and managed in DOM.\n   *\n   * @protected\n   * @member {HTMLElement}\n   */\n\t\t_this._parentElement = null;\n\n\t\t/**\n   * A helper mapping between bound collection items passed to {@link #bindTo}\n   * and view instances. Speeds up the view management.\n   *\n   * @protected\n   * @member {HTMLElement}\n   */\n\t\t_this._boundItemsToViewsMap = new Map();\n\t\treturn _this;\n\t}\n\n\t/**\n  * Initializes child views by injecting {@link module:ui/view~View#element} into DOM\n  * and calling {@link module:ui/view~View#init}.\n  *\n  * @returns {Promise} A Promise resolved when the initialization process is finished.\n  */\n\n\n\t_createClass(ViewCollection, [{\n\t\tkey: 'init',\n\t\tvalue: function init() {\n\t\t\tvar _this2 = this;\n\n\t\t\tif (this.ready) {\n\t\t\t\t/**\n     * This ViewCollection has already been initialized.\n     *\n     * @error ui-viewcollection-init-reinit\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('ui-viewcollection-init-reinit: This ViewCollection has already been initialized.');\n\t\t\t}\n\n\t\t\treturn Promise.all(this.map(function (v) {\n\t\t\t\treturn v.init();\n\t\t\t})).then(function () {\n\t\t\t\t_this2.ready = true;\n\t\t\t});\n\t\t}\n\n\t\t/**\n   * Destroys the view collection along with child views.\n   *\n   * @returns {Promise} A Promise resolved when the destruction process is finished.\n   */\n\n\t}, {\n\t\tkey: 'destroy',\n\t\tvalue: function destroy() {\n\t\t\tvar promises = [];\n\n\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\tvar _didIteratorError = false;\n\t\t\tvar _iteratorError = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator = this[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\tvar view = _step.value;\n\n\t\t\t\t\tpromises.push(view.destroy());\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError = true;\n\t\t\t\t_iteratorError = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn Promise.all(promises);\n\t\t}\n\n\t\t/**\n   * Adds a child view to the collection. If {@link module:ui/viewcollection~ViewCollection#ready}, the child view\n   * is also initialized when added.\n   *\n   * @param {module:ui/view~View} view A child view.\n   * @param {Number} [index] Index at which the child will be added to the collection.\n   * @returns {Promise} A Promise resolved when the child {@link module:ui/view~View#init} is done.\n   */\n\n\t}, {\n\t\tkey: 'add',\n\t\tvalue: function add(view, index) {\n\t\t\t_get(ViewCollection.prototype.__proto__ || Object.getPrototypeOf(ViewCollection.prototype), 'add', this).call(this, view, index);\n\n\t\t\t// {@link module:ui/view~View#init} returns `Promise`.\n\t\t\tvar promise = Promise.resolve();\n\n\t\t\tif (this.ready && !view.ready) {\n\t\t\t\tpromise = promise.then(function () {\n\t\t\t\t\treturn view.init();\n\t\t\t\t});\n\t\t\t}\n\n\t\t\treturn promise;\n\t\t}\n\n\t\t/**\n   * Sets {@link #_parentElement} of this collection.\n   *\n   * @param {HTMLElement} element A new parent.\n   */\n\n\t}, {\n\t\tkey: 'setParent',\n\t\tvalue: function setParent(elementOrDocFragment) {\n\t\t\tthis._parentElement = elementOrDocFragment;\n\t\t}\n\n\t\t/**\n   * Binds this collection to {@link module:utils/collection~Collection another collection}. For each item in the\n   * second collection there will be one view instance added to this collection.\n   *\n   * The process can be automatic:\n   *\n   *\t\t// This collection stores items.\n   *\t\tconst items = new Collection( { idProperty: 'label' } );\n   *\n   *\t\t// This view collection will become a factory out of the collection of items.\n   *\t\tconst views = new ViewCollection( locale );\n   *\n   *\t\t// Activate the binding – since now, this view collection works like a **factory**.\n   *\t\t// Each new item is passed to the FooView constructor like new FooView( locale, item ).\n   *\t\tviews.bindTo( items ).as( FooView );\n   *\n   *\t\t// As new items arrive to the collection, each becomes an instance of FooView\n   *\t\t// in the view collection.\n   *\t\titems.add( new Model( { label: 'foo' } ) );\n   *\t\titems.add( new Model( { label: 'bar' } ) );\n   *\n   *\t\tconsole.log( views.length == 2 );\n   *\n   *\t\t// View collection is updated as the model is removed.\n   *\t\titems.remove( 0 );\n   *\t\tconsole.log( views.length == 1 );\n   *\n   * or the factory can be driven by a custom callback:\n   *\n   *\t\t// This collection stores any kind of data.\n   *\t\tconst data = new Collection();\n   *\n   *\t\t// This view collection will become a custom factory for the data.\n   *\t\tconst views = new ViewCollection( locale );\n   *\n   *\t\t// Activate the binding – the **factory** is driven by a custom callback.\n   *\t\tviews.bindTo( data ).as( item => {\n   *\t\t\tif ( !item.foo ) {\n   *\t\t\t\treturn null;\n   *\t\t\t} else if ( item.foo == 'bar' ) {\n   *\t\t\t\treturn new BarView();\n   *\t\t\t} else {\n   *\t\t\t\treturn new DifferentView();\n   *\t\t\t}\n   *\t\t} );\n   *\n   *\t\t// As new data arrive to the collection, each is handled individually by the callback.\n   *\t\t// This will produce BarView.\n   *\t\tdata.add( { foo: 'bar' } );\n   *\n   *\t\t// And this one will become DifferentView.\n   *\t\tdata.add( { foo: 'baz' } );\n   *\n   *\t\t// Also there will be no view for data lacking the `foo` property.\n   *\t\tdata.add( {} );\n   *\n   *\t\tconsole.log( controllers.length == 2 );\n   *\n   *\t\t// View collection is also updated as the data is removed.\n   *\t\tdata.remove( 0 );\n   *\t\tconsole.log( controllers.length == 1 );\n   *\n   * @param {module:utils/collection~Collection} collection A collection to be bound.\n   * @returns {module:ui/viewcollection~ViewCollection#bindTo#as}\n   */\n\n\t}, {\n\t\tkey: 'bindTo',\n\t\tvalue: function bindTo(collection) {\n\t\t\tvar _this3 = this;\n\n\t\t\treturn {\n\t\t\t\t/**\n     * Determines the output view of the binding.\n     *\n     * @static\n     * @param {Function|module:ui/view~View} CallbackOrViewClass Specifies the constructor of the view to be used or\n     * a custom callback function which produces views.\n     */\n\t\t\t\tas: function as(CallbackOrViewClass) {\n\t\t\t\t\tvar createView = void 0;\n\n\t\t\t\t\tif (CallbackOrViewClass.prototype instanceof _view2.default) {\n\t\t\t\t\t\tcreateView = function createView(item) {\n\t\t\t\t\t\t\tvar viewInstance = new CallbackOrViewClass(_this3.locale, item);\n\n\t\t\t\t\t\t\t_this3._boundItemsToViewsMap.set(item, viewInstance);\n\n\t\t\t\t\t\t\treturn viewInstance;\n\t\t\t\t\t\t};\n\t\t\t\t\t} else {\n\t\t\t\t\t\tcreateView = function createView(item) {\n\t\t\t\t\t\t\tvar viewInstance = CallbackOrViewClass(item);\n\n\t\t\t\t\t\t\t_this3._boundItemsToViewsMap.set(item, viewInstance);\n\n\t\t\t\t\t\t\treturn viewInstance;\n\t\t\t\t\t\t};\n\t\t\t\t\t}\n\n\t\t\t\t\t// Load the initial content of the collection.\n\t\t\t\t\tvar _iteratorNormalCompletion2 = true;\n\t\t\t\t\tvar _didIteratorError2 = false;\n\t\t\t\t\tvar _iteratorError2 = undefined;\n\n\t\t\t\t\ttry {\n\t\t\t\t\t\tfor (var _iterator2 = collection[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {\n\t\t\t\t\t\t\tvar item = _step2.value;\n\n\t\t\t\t\t\t\t_this3.add(createView(item));\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\t// Synchronize views as new items are added to the collection.\n\t\t\t\t\t} catch (err) {\n\t\t\t\t\t\t_didIteratorError2 = true;\n\t\t\t\t\t\t_iteratorError2 = err;\n\t\t\t\t\t} finally {\n\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\tif (!_iteratorNormalCompletion2 && _iterator2.return) {\n\t\t\t\t\t\t\t\t_iterator2.return();\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} finally {\n\t\t\t\t\t\t\tif (_didIteratorError2) {\n\t\t\t\t\t\t\t\tthrow _iteratorError2;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t\t_this3.listenTo(collection, 'add', function (evt, item, index) {\n\t\t\t\t\t\t_this3.add(createView(item), index);\n\t\t\t\t\t});\n\n\t\t\t\t\t// Synchronize views as items are removed from the collection.\n\t\t\t\t\t_this3.listenTo(collection, 'remove', function (evt, item) {\n\t\t\t\t\t\t_this3.remove(_this3._boundItemsToViewsMap.get(item));\n\n\t\t\t\t\t\t_this3._boundItemsToViewsMap.delete(item);\n\t\t\t\t\t});\n\t\t\t\t}\n\t\t\t};\n\t\t}\n\n\t\t/**\n   * Delegates selected events coming from within the collection to desired {@link module:utils/emittermixin~EmitterMixin}.\n   *\n   * For instance:\n   *\n   *\t\tconst viewA = new View();\n   *\t\tconst viewB = new View();\n   *\t\tconst viewC = new View();\n   *\n   *\t\tconst views = parentView.createCollection();\n   *\n   *\t\tviews.delegate( 'eventX' ).to( viewB );\n   *\t\tviews.delegate( 'eventX', 'eventY' ).to( viewC );\n   *\n   *\t\tviews.add( viewA );\n   *\n   * then `eventX` is delegated (fired by) `viewB` and `viewC` along with `customData`:\n   *\n   *\t\tviewA.fire( 'eventX', customData );\n   *\n   * and `eventY` is delegated (fired by) `viewC` along with `customData`:\n   *\n   *\t\tviewA.fire( 'eventY', customData );\n   *\n   * See {@link module:utils/emittermixin~EmitterMixin#delegate}.\n   *\n   * @param {...String} events {@link module:ui/view~View} event names to be delegated to another {@link\n   * module:utils/emittermixin~EmitterMixin}.\n   * @returns {module:ui/viewcollection~ViewCollection#delegate.to}\n   */\n\n\t}, {\n\t\tkey: 'delegate',\n\t\tvalue: function delegate() {\n\t\t\tvar _this4 = this;\n\n\t\t\tfor (var _len = arguments.length, events = Array(_len), _key = 0; _key < _len; _key++) {\n\t\t\t\tevents[_key] = arguments[_key];\n\t\t\t}\n\n\t\t\tif (!events.length || !isStringArray(events)) {\n\t\t\t\t/**\n     * All event names must be strings.\n     *\n     * @error ui-viewcollection-delegate-wrong-events\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('ui-viewcollection-delegate-wrong-events: All event names must be strings.');\n\t\t\t}\n\n\t\t\treturn {\n\t\t\t\t/**\n     * Selects destination for {@link module:utils/emittermixin~EmitterMixin#delegate} events.\n     *\n     * @memberOf module:ui/viewcollection~ViewCollection#delegate\n     * @function module:ui/viewcollection~ViewCollection#delegate.to\n     * @param {module:utils/emittermixin~EmitterMixin} dest An `EmitterMixin` instance which is the destination for delegated events.\n     */\n\t\t\t\tto: function to(dest) {\n\t\t\t\t\t// Activate delegating on existing views in this collection.\n\t\t\t\t\tvar _iteratorNormalCompletion3 = true;\n\t\t\t\t\tvar _didIteratorError3 = false;\n\t\t\t\t\tvar _iteratorError3 = undefined;\n\n\t\t\t\t\ttry {\n\t\t\t\t\t\tfor (var _iterator3 = _this4[Symbol.iterator](), _step3; !(_iteratorNormalCompletion3 = (_step3 = _iterator3.next()).done); _iteratorNormalCompletion3 = true) {\n\t\t\t\t\t\t\tvar view = _step3.value;\n\t\t\t\t\t\t\tvar _iteratorNormalCompletion6 = true;\n\t\t\t\t\t\t\tvar _didIteratorError6 = false;\n\t\t\t\t\t\t\tvar _iteratorError6 = undefined;\n\n\t\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\t\tfor (var _iterator6 = events[Symbol.iterator](), _step6; !(_iteratorNormalCompletion6 = (_step6 = _iterator6.next()).done); _iteratorNormalCompletion6 = true) {\n\t\t\t\t\t\t\t\t\tvar evtName = _step6.value;\n\n\t\t\t\t\t\t\t\t\tview.delegate(evtName).to(dest);\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t} catch (err) {\n\t\t\t\t\t\t\t\t_didIteratorError6 = true;\n\t\t\t\t\t\t\t\t_iteratorError6 = err;\n\t\t\t\t\t\t\t} finally {\n\t\t\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\t\t\tif (!_iteratorNormalCompletion6 && _iterator6.return) {\n\t\t\t\t\t\t\t\t\t\t_iterator6.return();\n\t\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\t} finally {\n\t\t\t\t\t\t\t\t\tif (_didIteratorError6) {\n\t\t\t\t\t\t\t\t\t\tthrow _iteratorError6;\n\t\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\t// Activate delegating on future views in this collection.\n\t\t\t\t\t} catch (err) {\n\t\t\t\t\t\t_didIteratorError3 = true;\n\t\t\t\t\t\t_iteratorError3 = err;\n\t\t\t\t\t} finally {\n\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\tif (!_iteratorNormalCompletion3 && _iterator3.return) {\n\t\t\t\t\t\t\t\t_iterator3.return();\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} finally {\n\t\t\t\t\t\t\tif (_didIteratorError3) {\n\t\t\t\t\t\t\t\tthrow _iteratorError3;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t\t_this4.on('add', function (evt, view) {\n\t\t\t\t\t\tvar _iteratorNormalCompletion4 = true;\n\t\t\t\t\t\tvar _didIteratorError4 = false;\n\t\t\t\t\t\tvar _iteratorError4 = undefined;\n\n\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\tfor (var _iterator4 = events[Symbol.iterator](), _step4; !(_iteratorNormalCompletion4 = (_step4 = _iterator4.next()).done); _iteratorNormalCompletion4 = true) {\n\t\t\t\t\t\t\t\tvar evtName = _step4.value;\n\n\t\t\t\t\t\t\t\tview.delegate(evtName).to(dest);\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} catch (err) {\n\t\t\t\t\t\t\t_didIteratorError4 = true;\n\t\t\t\t\t\t\t_iteratorError4 = err;\n\t\t\t\t\t\t} finally {\n\t\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\t\tif (!_iteratorNormalCompletion4 && _iterator4.return) {\n\t\t\t\t\t\t\t\t\t_iterator4.return();\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t} finally {\n\t\t\t\t\t\t\t\tif (_didIteratorError4) {\n\t\t\t\t\t\t\t\t\tthrow _iteratorError4;\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t});\n\n\t\t\t\t\t// Deactivate delegating when view is removed from this collection.\n\t\t\t\t\t_this4.on('remove', function (evt, view) {\n\t\t\t\t\t\tvar _iteratorNormalCompletion5 = true;\n\t\t\t\t\t\tvar _didIteratorError5 = false;\n\t\t\t\t\t\tvar _iteratorError5 = undefined;\n\n\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\tfor (var _iterator5 = events[Symbol.iterator](), _step5; !(_iteratorNormalCompletion5 = (_step5 = _iterator5.next()).done); _iteratorNormalCompletion5 = true) {\n\t\t\t\t\t\t\t\tvar evtName = _step5.value;\n\n\t\t\t\t\t\t\t\tview.stopDelegating(evtName, dest);\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} catch (err) {\n\t\t\t\t\t\t\t_didIteratorError5 = true;\n\t\t\t\t\t\t\t_iteratorError5 = err;\n\t\t\t\t\t\t} finally {\n\t\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\t\tif (!_iteratorNormalCompletion5 && _iterator5.return) {\n\t\t\t\t\t\t\t\t\t_iterator5.return();\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t} finally {\n\t\t\t\t\t\t\t\tif (_didIteratorError5) {\n\t\t\t\t\t\t\t\t\tthrow _iteratorError5;\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t});\n\t\t\t\t}\n\t\t\t};\n\t\t}\n\t}]);\n\n\treturn ViewCollection;\n}(_collection2.default);\n\nexports.default = ViewCollection;\n\n\n(0, _mix2.default)(_collection2.default, _observablemixin2.default);\n\n// Check if all entries of the array are of `String` type.\n//\n// @private\n// @param {Array} arr An array to be checked.\n// @returns {Boolean}\nfunction isStringArray(arr) {\n\treturn arr.every(function (a) {\n\t\treturn typeof a == 'string';\n\t});\n}\n\n/***/ }),\n/* 122 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _mapCacheClear = __webpack_require__(465);\n\nvar _mapCacheClear2 = _interopRequireDefault(_mapCacheClear);\n\nvar _mapCacheDelete = __webpack_require__(466);\n\nvar _mapCacheDelete2 = _interopRequireDefault(_mapCacheDelete);\n\nvar _mapCacheGet = __webpack_require__(467);\n\nvar _mapCacheGet2 = _interopRequireDefault(_mapCacheGet);\n\nvar _mapCacheHas = __webpack_require__(468);\n\nvar _mapCacheHas2 = _interopRequireDefault(_mapCacheHas);\n\nvar _mapCacheSet = __webpack_require__(469);\n\nvar _mapCacheSet2 = _interopRequireDefault(_mapCacheSet);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Creates a map cache object to store key-value pairs.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\nfunction MapCache(entries) {\n  var index = -1,\n      length = entries ? entries.length : 0;\n\n  this.clear();\n  while (++index < length) {\n    var entry = entries[index];\n    this.set(entry[0], entry[1]);\n  }\n}\n\n// Add methods to `MapCache`.\nMapCache.prototype.clear = _mapCacheClear2.default;\nMapCache.prototype['delete'] = _mapCacheDelete2.default;\nMapCache.prototype.get = _mapCacheGet2.default;\nMapCache.prototype.has = _mapCacheHas2.default;\nMapCache.prototype.set = _mapCacheSet2.default;\n\nexports.default = MapCache;\n\n/***/ }),\n/* 123 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _ListCache = __webpack_require__(80);\n\nvar _ListCache2 = _interopRequireDefault(_ListCache);\n\nvar _stackClear = __webpack_require__(474);\n\nvar _stackClear2 = _interopRequireDefault(_stackClear);\n\nvar _stackDelete = __webpack_require__(475);\n\nvar _stackDelete2 = _interopRequireDefault(_stackDelete);\n\nvar _stackGet = __webpack_require__(476);\n\nvar _stackGet2 = _interopRequireDefault(_stackGet);\n\nvar _stackHas = __webpack_require__(477);\n\nvar _stackHas2 = _interopRequireDefault(_stackHas);\n\nvar _stackSet = __webpack_require__(478);\n\nvar _stackSet2 = _interopRequireDefault(_stackSet);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Creates a stack cache object to store key-value pairs.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\nfunction Stack(entries) {\n  this.__data__ = new _ListCache2.default(entries);\n}\n\n// Add methods to `Stack`.\nStack.prototype.clear = _stackClear2.default;\nStack.prototype['delete'] = _stackDelete2.default;\nStack.prototype.get = _stackGet2.default;\nStack.prototype.has = _stackHas2.default;\nStack.prototype.set = _stackSet2.default;\n\nexports.default = Stack;\n\n/***/ }),\n/* 124 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _root = __webpack_require__(30);\n\nvar _root2 = _interopRequireDefault(_root);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** Built-in value references. */\nvar _Symbol = _root2.default.Symbol;\n\nexports.default = _Symbol;\n\n/***/ }),\n/* 125 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseIndexOf = __webpack_require__(128);\n\nvar _baseIndexOf2 = _interopRequireDefault(_baseIndexOf);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * A specialized version of `_.includes` for arrays without support for\n * specifying an index to search from.\n *\n * @private\n * @param {Array} array The array to search.\n * @param {*} target The value to search for.\n * @returns {boolean} Returns `true` if `target` is found, else `false`.\n */\nfunction arrayIncludes(array, value) {\n  return !!array.length && (0, _baseIndexOf2.default)(array, value, 0) > -1;\n}\n\nexports.default = arrayIncludes;\n\n/***/ }),\n/* 126 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * This function is like `arrayIncludes` except that it accepts a comparator.\n *\n * @private\n * @param {Array} array The array to search.\n * @param {*} target The value to search for.\n * @param {Function} comparator The comparator invoked per element.\n * @returns {boolean} Returns `true` if `target` is found, else `false`.\n */\nfunction arrayIncludesWith(array, value, comparator) {\n  var index = -1,\n      length = array.length;\n\n  while (++index < length) {\n    if (comparator(value, array[index])) {\n      return true;\n    }\n  }\n  return false;\n}\n\nexports.default = arrayIncludesWith;\n\n/***/ }),\n/* 127 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _castPath = __webpack_require__(87);\n\nvar _castPath2 = _interopRequireDefault(_castPath);\n\nvar _isKey = __webpack_require__(50);\n\nvar _isKey2 = _interopRequireDefault(_isKey);\n\nvar _toKey = __webpack_require__(51);\n\nvar _toKey2 = _interopRequireDefault(_toKey);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * The base implementation of `_.get` without support for default values.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array|string} path The path of the property to get.\n * @returns {*} Returns the resolved value.\n */\nfunction baseGet(object, path) {\n  path = (0, _isKey2.default)(path, object) ? [path] : (0, _castPath2.default)(path);\n\n  var index = 0,\n      length = path.length;\n\n  while (object != null && index < length) {\n    object = object[(0, _toKey2.default)(path[index++])];\n  }\n  return index && index == length ? object : undefined;\n}\n\nexports.default = baseGet;\n\n/***/ }),\n/* 128 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _indexOfNaN = __webpack_require__(210);\n\nvar _indexOfNaN2 = _interopRequireDefault(_indexOfNaN);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * The base implementation of `_.indexOf` without `fromIndex` bounds checks.\n *\n * @private\n * @param {Array} array The array to search.\n * @param {*} value The value to search for.\n * @param {number} fromIndex The index to search from.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\nfunction baseIndexOf(array, value, fromIndex) {\n  if (value !== value) {\n    return (0, _indexOfNaN2.default)(array, fromIndex);\n  }\n  var index = fromIndex - 1,\n      length = array.length;\n\n  while (++index < length) {\n    if (array[index] === value) {\n      return index;\n    }\n  }\n  return -1;\n}\n\nexports.default = baseIndexOf;\n\n/***/ }),\n/* 129 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _SetCache = __webpack_require__(81);\n\nvar _SetCache2 = _interopRequireDefault(_SetCache);\n\nvar _arrayIncludes = __webpack_require__(125);\n\nvar _arrayIncludes2 = _interopRequireDefault(_arrayIncludes);\n\nvar _arrayIncludesWith = __webpack_require__(126);\n\nvar _arrayIncludesWith2 = _interopRequireDefault(_arrayIncludesWith);\n\nvar _arrayMap = __webpack_require__(26);\n\nvar _arrayMap2 = _interopRequireDefault(_arrayMap);\n\nvar _baseUnary = __webpack_require__(134);\n\nvar _baseUnary2 = _interopRequireDefault(_baseUnary);\n\nvar _cacheHas = __webpack_require__(136);\n\nvar _cacheHas2 = _interopRequireDefault(_cacheHas);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeMin = Math.min;\n\n/**\n * The base implementation of methods like `_.intersection`, without support\n * for iteratee shorthands, that accepts an array of arrays to inspect.\n *\n * @private\n * @param {Array} arrays The arrays to inspect.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of shared values.\n */\nfunction baseIntersection(arrays, iteratee, comparator) {\n  var includes = comparator ? _arrayIncludesWith2.default : _arrayIncludes2.default,\n      length = arrays[0].length,\n      othLength = arrays.length,\n      othIndex = othLength,\n      caches = Array(othLength),\n      maxLength = Infinity,\n      result = [];\n\n  while (othIndex--) {\n    var array = arrays[othIndex];\n    if (othIndex && iteratee) {\n      array = (0, _arrayMap2.default)(array, (0, _baseUnary2.default)(iteratee));\n    }\n    maxLength = nativeMin(array.length, maxLength);\n    caches[othIndex] = !comparator && (iteratee || length >= 120 && array.length >= 120) ? new _SetCache2.default(othIndex && array) : undefined;\n  }\n  array = arrays[0];\n\n  var index = -1,\n      seen = caches[0];\n\n  outer: while (++index < length && result.length < maxLength) {\n    var value = array[index],\n        computed = iteratee ? iteratee(value) : value;\n\n    value = comparator || value !== 0 ? value : 0;\n    if (!(seen ? (0, _cacheHas2.default)(seen, computed) : includes(result, computed, comparator))) {\n      othIndex = othLength;\n      while (--othIndex) {\n        var cache = caches[othIndex];\n        if (!(cache ? (0, _cacheHas2.default)(cache, computed) : includes(arrays[othIndex], computed, comparator))) {\n          continue outer;\n        }\n      }\n      if (seen) {\n        seen.push(computed);\n      }\n      result.push(value);\n    }\n  }\n  return result;\n}\n\nexports.default = baseIntersection;\n\n/***/ }),\n/* 130 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseIsEqualDeep = __webpack_require__(419);\n\nvar _baseIsEqualDeep2 = _interopRequireDefault(_baseIsEqualDeep);\n\nvar _isObject = __webpack_require__(13);\n\nvar _isObject2 = _interopRequireDefault(_isObject);\n\nvar _isObjectLike = __webpack_require__(43);\n\nvar _isObjectLike2 = _interopRequireDefault(_isObjectLike);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * The base implementation of `_.isEqual` which supports partial comparisons\n * and tracks traversed objects.\n *\n * @private\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @param {Function} [customizer] The function to customize comparisons.\n * @param {boolean} [bitmask] The bitmask of comparison flags.\n *  The bitmask may be composed of the following flags:\n *     1 - Unordered comparison\n *     2 - Partial comparison\n * @param {Object} [stack] Tracks traversed `value` and `other` objects.\n * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n */\nfunction baseIsEqual(value, other, customizer, bitmask, stack) {\n  if (value === other) {\n    return true;\n  }\n  if (value == null || other == null || !(0, _isObject2.default)(value) && !(0, _isObjectLike2.default)(other)) {\n    return value !== value && other !== other;\n  }\n  return (0, _baseIsEqualDeep2.default)(value, other, baseIsEqual, customizer, bitmask, stack);\n}\n\nexports.default = baseIsEqual;\n\n/***/ }),\n/* 131 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * The base implementation of `_.property` without support for deep paths.\n *\n * @private\n * @param {string} key The key of the property to get.\n * @returns {Function} Returns the new accessor function.\n */\nfunction baseProperty(key) {\n  return function (object) {\n    return object == null ? undefined : object[key];\n  };\n}\n\nexports.default = baseProperty;\n\n/***/ }),\n/* 132 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _arrayMap = __webpack_require__(26);\n\nvar _arrayMap2 = _interopRequireDefault(_arrayMap);\n\nvar _baseIndexOf = __webpack_require__(128);\n\nvar _baseIndexOf2 = _interopRequireDefault(_baseIndexOf);\n\nvar _baseIndexOfWith = __webpack_require__(418);\n\nvar _baseIndexOfWith2 = _interopRequireDefault(_baseIndexOfWith);\n\nvar _baseUnary = __webpack_require__(134);\n\nvar _baseUnary2 = _interopRequireDefault(_baseUnary);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** Used for built-in method references. */\nvar arrayProto = Array.prototype;\n\n/** Built-in value references. */\nvar splice = arrayProto.splice;\n\n/**\n * The base implementation of `_.pullAllBy` without support for iteratee\n * shorthands.\n *\n * @private\n * @param {Array} array The array to modify.\n * @param {Array} values The values to remove.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns `array`.\n */\nfunction basePullAll(array, values, iteratee, comparator) {\n  var indexOf = comparator ? _baseIndexOfWith2.default : _baseIndexOf2.default,\n      index = -1,\n      length = values.length,\n      seen = array;\n\n  if (iteratee) {\n    seen = (0, _arrayMap2.default)(array, (0, _baseUnary2.default)(iteratee));\n  }\n  while (++index < length) {\n    var fromIndex = 0,\n        value = values[index],\n        computed = iteratee ? iteratee(value) : value;\n\n    while ((fromIndex = indexOf(seen, computed, fromIndex, comparator)) > -1) {\n      if (seen !== array) {\n        splice.call(seen, fromIndex, 1);\n      }\n      splice.call(array, fromIndex, 1);\n    }\n  }\n  return array;\n}\n\nexports.default = basePullAll;\n\n/***/ }),\n/* 133 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _isSymbol = __webpack_require__(44);\n\nvar _isSymbol2 = _interopRequireDefault(_isSymbol);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** Used as references for the maximum length and index of an array. */\nvar MAX_ARRAY_LENGTH = 4294967295,\n    MAX_ARRAY_INDEX = MAX_ARRAY_LENGTH - 1;\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeFloor = Math.floor,\n    nativeMin = Math.min;\n\n/**\n * The base implementation of `_.sortedIndexBy` and `_.sortedLastIndexBy`\n * which invokes `iteratee` for `value` and each element of `array` to compute\n * their sort ranking. The iteratee is invoked with one argument; (value).\n *\n * @private\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @param {Function} iteratee The iteratee invoked per element.\n * @param {boolean} [retHighest] Specify returning the highest qualified index.\n * @returns {number} Returns the index at which `value` should be inserted\n *  into `array`.\n */\nfunction baseSortedIndexBy(array, value, iteratee, retHighest) {\n  value = iteratee(value);\n\n  var low = 0,\n      high = array ? array.length : 0,\n      valIsNaN = value !== value,\n      valIsNull = value === null,\n      valIsSymbol = (0, _isSymbol2.default)(value),\n      valIsUndefined = value === undefined;\n\n  while (low < high) {\n    var mid = nativeFloor((low + high) / 2),\n        computed = iteratee(array[mid]),\n        othIsDefined = computed !== undefined,\n        othIsNull = computed === null,\n        othIsReflexive = computed === computed,\n        othIsSymbol = (0, _isSymbol2.default)(computed);\n\n    if (valIsNaN) {\n      var setLow = retHighest || othIsReflexive;\n    } else if (valIsUndefined) {\n      setLow = othIsReflexive && (retHighest || othIsDefined);\n    } else if (valIsNull) {\n      setLow = othIsReflexive && othIsDefined && (retHighest || !othIsNull);\n    } else if (valIsSymbol) {\n      setLow = othIsReflexive && othIsDefined && !othIsNull && (retHighest || !othIsSymbol);\n    } else if (othIsNull || othIsSymbol) {\n      setLow = false;\n    } else {\n      setLow = retHighest ? computed <= value : computed < value;\n    }\n    if (setLow) {\n      low = mid + 1;\n    } else {\n      high = mid;\n    }\n  }\n  return nativeMin(high, MAX_ARRAY_INDEX);\n}\n\nexports.default = baseSortedIndexBy;\n\n/***/ }),\n/* 134 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * The base implementation of `_.unary` without support for storing wrapper metadata.\n *\n * @private\n * @param {Function} func The function to cap arguments for.\n * @returns {Function} Returns the new capped function.\n */\nfunction baseUnary(func) {\n  return function (value) {\n    return func(value);\n  };\n}\n\nexports.default = baseUnary;\n\n/***/ }),\n/* 135 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _arrayPush = __webpack_require__(83);\n\nvar _arrayPush2 = _interopRequireDefault(_arrayPush);\n\nvar _baseDifference = __webpack_require__(63);\n\nvar _baseDifference2 = _interopRequireDefault(_baseDifference);\n\nvar _baseUniq = __webpack_require__(42);\n\nvar _baseUniq2 = _interopRequireDefault(_baseUniq);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * The base implementation of methods like `_.xor`, without support for\n * iteratee shorthands, that accepts an array of arrays to inspect.\n *\n * @private\n * @param {Array} arrays The arrays to inspect.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of values.\n */\nfunction baseXor(arrays, iteratee, comparator) {\n  var index = -1,\n      length = arrays.length;\n\n  while (++index < length) {\n    var result = result ? (0, _arrayPush2.default)((0, _baseDifference2.default)(result, arrays[index], iteratee, comparator), (0, _baseDifference2.default)(arrays[index], result, iteratee, comparator)) : arrays[index];\n  }\n  return result && result.length ? (0, _baseUniq2.default)(result, iteratee, comparator) : [];\n}\n\nexports.default = baseXor;\n\n/***/ }),\n/* 136 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * Checks if a cache value for `key` exists.\n *\n * @private\n * @param {Object} cache The cache to query.\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\nfunction cacheHas(cache, key) {\n  return cache.has(key);\n}\n\nexports.default = cacheHas;\n\n/***/ }),\n/* 137 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _isArrayLikeObject = __webpack_require__(12);\n\nvar _isArrayLikeObject2 = _interopRequireDefault(_isArrayLikeObject);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Casts `value` to an empty array if it's not an array like object.\n *\n * @private\n * @param {*} value The value to inspect.\n * @returns {Array|Object} Returns the cast array-like object.\n */\nfunction castArrayLikeObject(value) {\n  return (0, _isArrayLikeObject2.default)(value) ? value : [];\n}\n\nexports.default = castArrayLikeObject;\n\n/***/ }),\n/* 138 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _Uint8Array = __webpack_require__(196);\n\nvar _Uint8Array2 = _interopRequireDefault(_Uint8Array);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Creates a clone of `arrayBuffer`.\n *\n * @private\n * @param {ArrayBuffer} arrayBuffer The array buffer to clone.\n * @returns {ArrayBuffer} Returns the cloned array buffer.\n */\nfunction cloneArrayBuffer(arrayBuffer) {\n  var result = new arrayBuffer.constructor(arrayBuffer.byteLength);\n  new _Uint8Array2.default(result).set(new _Uint8Array2.default(arrayBuffer));\n  return result;\n}\n\nexports.default = cloneArrayBuffer;\n\n/***/ }),\n/* 139 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _assignValue = __webpack_require__(62);\n\nvar _assignValue2 = _interopRequireDefault(_assignValue);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Copies properties of `source` to `object`.\n *\n * @private\n * @param {Object} source The object to copy properties from.\n * @param {Array} props The property identifiers to copy.\n * @param {Object} [object={}] The object to copy properties to.\n * @param {Function} [customizer] The function to customize copied values.\n * @returns {Object} Returns `object`.\n */\nfunction copyObject(source, props, object, customizer) {\n  object || (object = {});\n\n  var index = -1,\n      length = props.length;\n\n  while (++index < length) {\n    var key = props[index];\n\n    var newValue = customizer ? customizer(object[key], source[key], key, object, source) : source[key];\n\n    (0, _assignValue2.default)(object, key, newValue);\n  }\n  return object;\n}\n\nexports.default = copyObject;\n\n/***/ }),\n/* 140 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeGetPrototype = Object.getPrototypeOf;\n\n/**\n * Gets the `[[Prototype]]` of `value`.\n *\n * @private\n * @param {*} value The value to query.\n * @returns {null|Object} Returns the `[[Prototype]]`.\n */\nfunction getPrototype(value) {\n  return nativeGetPrototype(Object(value));\n}\n\nexports.default = getPrototype;\n\n/***/ }),\n/* 141 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _DataView = __webpack_require__(402);\n\nvar _DataView2 = _interopRequireDefault(_DataView);\n\nvar _Map = __webpack_require__(194);\n\nvar _Map2 = _interopRequireDefault(_Map);\n\nvar _Promise = __webpack_require__(404);\n\nvar _Promise2 = _interopRequireDefault(_Promise);\n\nvar _Set = __webpack_require__(195);\n\nvar _Set2 = _interopRequireDefault(_Set);\n\nvar _WeakMap = __webpack_require__(406);\n\nvar _WeakMap2 = _interopRequireDefault(_WeakMap);\n\nvar _toSource = __webpack_require__(213);\n\nvar _toSource2 = _interopRequireDefault(_toSource);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** `Object#toString` result references. */\nvar mapTag = '[object Map]',\n    objectTag = '[object Object]',\n    promiseTag = '[object Promise]',\n    setTag = '[object Set]',\n    weakMapTag = '[object WeakMap]';\n\nvar dataViewTag = '[object DataView]';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/**\n * Used to resolve the\n * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)\n * of values.\n */\nvar objectToString = objectProto.toString;\n\n/** Used to detect maps, sets, and weakmaps. */\nvar dataViewCtorString = (0, _toSource2.default)(_DataView2.default),\n    mapCtorString = (0, _toSource2.default)(_Map2.default),\n    promiseCtorString = (0, _toSource2.default)(_Promise2.default),\n    setCtorString = (0, _toSource2.default)(_Set2.default),\n    weakMapCtorString = (0, _toSource2.default)(_WeakMap2.default);\n\n/**\n * Gets the `toStringTag` of `value`.\n *\n * @private\n * @param {*} value The value to query.\n * @returns {string} Returns the `toStringTag`.\n */\nfunction getTag(value) {\n  return objectToString.call(value);\n}\n\n// Fallback for data views, maps, sets, and weak maps in IE 11,\n// for data views in Edge, and promises in Node.js.\nif (_DataView2.default && getTag(new _DataView2.default(new ArrayBuffer(1))) != dataViewTag || _Map2.default && getTag(new _Map2.default()) != mapTag || _Promise2.default && getTag(_Promise2.default.resolve()) != promiseTag || _Set2.default && getTag(new _Set2.default()) != setTag || _WeakMap2.default && getTag(new _WeakMap2.default()) != weakMapTag) {\n  getTag = function getTag(value) {\n    var result = objectToString.call(value),\n        Ctor = result == objectTag ? value.constructor : undefined,\n        ctorString = Ctor ? (0, _toSource2.default)(Ctor) : undefined;\n\n    if (ctorString) {\n      switch (ctorString) {\n        case dataViewCtorString:\n          return dataViewTag;\n        case mapCtorString:\n          return mapTag;\n        case promiseCtorString:\n          return promiseTag;\n        case setCtorString:\n          return setTag;\n        case weakMapCtorString:\n          return weakMapTag;\n      }\n    }\n    return result;\n  };\n}\n\nexports.default = getTag;\n\n/***/ }),\n/* 142 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * Converts `map` to its key-value pairs.\n *\n * @private\n * @param {Object} map The map to convert.\n * @returns {Array} Returns the key-value pairs.\n */\nfunction mapToArray(map) {\n  var index = -1,\n      result = Array(map.size);\n\n  map.forEach(function (value, key) {\n    result[++index] = [key, value];\n  });\n  return result;\n}\n\nexports.default = mapToArray;\n\n/***/ }),\n/* 143 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _isObject = __webpack_require__(13);\n\nvar _isObject2 = _interopRequireDefault(_isObject);\n\nvar _now = __webpack_require__(493);\n\nvar _now2 = _interopRequireDefault(_now);\n\nvar _toNumber = __webpack_require__(261);\n\nvar _toNumber2 = _interopRequireDefault(_toNumber);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** Used as the `TypeError` message for \"Functions\" methods. */\nvar FUNC_ERROR_TEXT = 'Expected a function';\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeMax = Math.max,\n    nativeMin = Math.min;\n\n/**\n * Creates a debounced function that delays invoking `func` until after `wait`\n * milliseconds have elapsed since the last time the debounced function was\n * invoked. The debounced function comes with a `cancel` method to cancel\n * delayed `func` invocations and a `flush` method to immediately invoke them.\n * Provide an options object to indicate whether `func` should be invoked on\n * the leading and/or trailing edge of the `wait` timeout. The `func` is invoked\n * with the last arguments provided to the debounced function. Subsequent calls\n * to the debounced function return the result of the last `func` invocation.\n *\n * **Note:** If `leading` and `trailing` options are `true`, `func` is invoked\n * on the trailing edge of the timeout only if the debounced function is\n * invoked more than once during the `wait` timeout.\n *\n * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)\n * for details over the differences between `_.debounce` and `_.throttle`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to debounce.\n * @param {number} [wait=0] The number of milliseconds to delay.\n * @param {Object} [options={}] The options object.\n * @param {boolean} [options.leading=false]\n *  Specify invoking on the leading edge of the timeout.\n * @param {number} [options.maxWait]\n *  The maximum time `func` is allowed to be delayed before it's invoked.\n * @param {boolean} [options.trailing=true]\n *  Specify invoking on the trailing edge of the timeout.\n * @returns {Function} Returns the new debounced function.\n * @example\n *\n * // Avoid costly calculations while the window size is in flux.\n * jQuery(window).on('resize', _.debounce(calculateLayout, 150));\n *\n * // Invoke `sendMail` when clicked, debouncing subsequent calls.\n * jQuery(element).on('click', _.debounce(sendMail, 300, {\n *   'leading': true,\n *   'trailing': false\n * }));\n *\n * // Ensure `batchLog` is invoked once after 1 second of debounced calls.\n * var debounced = _.debounce(batchLog, 250, { 'maxWait': 1000 });\n * var source = new EventSource('/stream');\n * jQuery(source).on('message', debounced);\n *\n * // Cancel the trailing debounced invocation.\n * jQuery(window).on('popstate', debounced.cancel);\n */\nfunction debounce(func, wait, options) {\n  var lastArgs,\n      lastThis,\n      maxWait,\n      result,\n      timerId,\n      lastCallTime = 0,\n      lastInvokeTime = 0,\n      leading = false,\n      maxing = false,\n      trailing = true;\n\n  if (typeof func != 'function') {\n    throw new TypeError(FUNC_ERROR_TEXT);\n  }\n  wait = (0, _toNumber2.default)(wait) || 0;\n  if ((0, _isObject2.default)(options)) {\n    leading = !!options.leading;\n    maxing = 'maxWait' in options;\n    maxWait = maxing ? nativeMax((0, _toNumber2.default)(options.maxWait) || 0, wait) : maxWait;\n    trailing = 'trailing' in options ? !!options.trailing : trailing;\n  }\n\n  function invokeFunc(time) {\n    var args = lastArgs,\n        thisArg = lastThis;\n\n    lastArgs = lastThis = undefined;\n    lastInvokeTime = time;\n    result = func.apply(thisArg, args);\n    return result;\n  }\n\n  function leadingEdge(time) {\n    // Reset any `maxWait` timer.\n    lastInvokeTime = time;\n    // Start the timer for the trailing edge.\n    timerId = setTimeout(timerExpired, wait);\n    // Invoke the leading edge.\n    return leading ? invokeFunc(time) : result;\n  }\n\n  function remainingWait(time) {\n    var timeSinceLastCall = time - lastCallTime,\n        timeSinceLastInvoke = time - lastInvokeTime,\n        result = wait - timeSinceLastCall;\n\n    return maxing ? nativeMin(result, maxWait - timeSinceLastInvoke) : result;\n  }\n\n  function shouldInvoke(time) {\n    var timeSinceLastCall = time - lastCallTime,\n        timeSinceLastInvoke = time - lastInvokeTime;\n\n    // Either this is the first call, activity has stopped and we're at the\n    // trailing edge, the system time has gone backwards and we're treating\n    // it as the trailing edge, or we've hit the `maxWait` limit.\n    return !lastCallTime || timeSinceLastCall >= wait || timeSinceLastCall < 0 || maxing && timeSinceLastInvoke >= maxWait;\n  }\n\n  function timerExpired() {\n    var time = (0, _now2.default)();\n    if (shouldInvoke(time)) {\n      return trailingEdge(time);\n    }\n    // Restart the timer.\n    timerId = setTimeout(timerExpired, remainingWait(time));\n  }\n\n  function trailingEdge(time) {\n    clearTimeout(timerId);\n    timerId = undefined;\n\n    // Only invoke if we have `lastArgs` which means `func` has been\n    // debounced at least once.\n    if (trailing && lastArgs) {\n      return invokeFunc(time);\n    }\n    lastArgs = lastThis = undefined;\n    return result;\n  }\n\n  function cancel() {\n    if (timerId !== undefined) {\n      clearTimeout(timerId);\n    }\n    lastCallTime = lastInvokeTime = 0;\n    lastArgs = lastThis = timerId = undefined;\n  }\n\n  function flush() {\n    return timerId === undefined ? result : trailingEdge((0, _now2.default)());\n  }\n\n  function debounced() {\n    var time = (0, _now2.default)(),\n        isInvoking = shouldInvoke(time);\n\n    lastArgs = arguments;\n    lastThis = this;\n    lastCallTime = time;\n\n    if (isInvoking) {\n      if (timerId === undefined) {\n        return leadingEdge(lastCallTime);\n      }\n      if (maxing) {\n        // Handle invocations in a tight loop.\n        clearTimeout(timerId);\n        timerId = setTimeout(timerExpired, wait);\n        return invokeFunc(lastCallTime);\n      }\n    }\n    if (timerId === undefined) {\n      timerId = setTimeout(timerExpired, wait);\n    }\n    return result;\n  }\n  debounced.cancel = cancel;\n  debounced.flush = flush;\n  return debounced;\n}\n\nexports.default = debounce;\n\n/***/ }),\n/* 144 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseSlice = __webpack_require__(34);\n\nvar _baseSlice2 = _interopRequireDefault(_baseSlice);\n\nvar _toInteger = __webpack_require__(14);\n\nvar _toInteger2 = _interopRequireDefault(_toInteger);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Creates a slice of `array` with `n` elements dropped from the beginning.\n *\n * @static\n * @memberOf _\n * @since 0.5.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {number} [n=1] The number of elements to drop.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.drop([1, 2, 3]);\n * // => [2, 3]\n *\n * _.drop([1, 2, 3], 2);\n * // => [3]\n *\n * _.drop([1, 2, 3], 5);\n * // => []\n *\n * _.drop([1, 2, 3], 0);\n * // => [1, 2, 3]\n */\nfunction drop(array, n, guard) {\n  var length = array ? array.length : 0;\n  if (!length) {\n    return [];\n  }\n  n = guard || n === undefined ? 1 : (0, _toInteger2.default)(n);\n  return (0, _baseSlice2.default)(array, n < 0 ? 0 : n, length);\n}\n\nexports.default = drop;\n\n/***/ }),\n/* 145 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseSlice = __webpack_require__(34);\n\nvar _baseSlice2 = _interopRequireDefault(_baseSlice);\n\nvar _toInteger = __webpack_require__(14);\n\nvar _toInteger2 = _interopRequireDefault(_toInteger);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Creates a slice of `array` with `n` elements dropped from the end.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {number} [n=1] The number of elements to drop.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.dropRight([1, 2, 3]);\n * // => [1, 2]\n *\n * _.dropRight([1, 2, 3], 2);\n * // => [1]\n *\n * _.dropRight([1, 2, 3], 5);\n * // => []\n *\n * _.dropRight([1, 2, 3], 0);\n * // => [1, 2, 3]\n */\nfunction dropRight(array, n, guard) {\n  var length = array ? array.length : 0;\n  if (!length) {\n    return [];\n  }\n  n = guard || n === undefined ? 1 : (0, _toInteger2.default)(n);\n  n = length - n;\n  return (0, _baseSlice2.default)(array, 0, n < 0 ? 0 : n);\n}\n\nexports.default = dropRight;\n\n/***/ }),\n/* 146 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * Gets the first element of `array`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @alias first\n * @category Array\n * @param {Array} array The array to query.\n * @returns {*} Returns the first element of `array`.\n * @example\n *\n * _.head([1, 2, 3]);\n * // => 1\n *\n * _.head([]);\n * // => undefined\n */\nfunction head(array) {\n  return array && array.length ? array[0] : undefined;\n}\n\nexports.default = head;\n\n/***/ }),\n/* 147 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _isArrayLikeObject = __webpack_require__(12);\n\nvar _isArrayLikeObject2 = _interopRequireDefault(_isArrayLikeObject);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** `Object#toString` result references. */\nvar argsTag = '[object Arguments]';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/**\n * Used to resolve the\n * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)\n * of values.\n */\nvar objectToString = objectProto.toString;\n\n/** Built-in value references. */\nvar propertyIsEnumerable = objectProto.propertyIsEnumerable;\n\n/**\n * Checks if `value` is likely an `arguments` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is correctly classified,\n *  else `false`.\n * @example\n *\n * _.isArguments(function() { return arguments; }());\n * // => true\n *\n * _.isArguments([1, 2, 3]);\n * // => false\n */\nfunction isArguments(value) {\n  // Safari 8.1 incorrectly makes `arguments.callee` enumerable in strict mode.\n  return (0, _isArrayLikeObject2.default)(value) && hasOwnProperty.call(value, 'callee') && (!propertyIsEnumerable.call(value, 'callee') || objectToString.call(value) == argsTag);\n}\n\nexports.default = isArguments;\n\n/***/ }),\n/* 148 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _isObject = __webpack_require__(13);\n\nvar _isObject2 = _interopRequireDefault(_isObject);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** `Object#toString` result references. */\nvar funcTag = '[object Function]',\n    genTag = '[object GeneratorFunction]';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/**\n * Used to resolve the\n * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)\n * of values.\n */\nvar objectToString = objectProto.toString;\n\n/**\n * Checks if `value` is classified as a `Function` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is correctly classified,\n *  else `false`.\n * @example\n *\n * _.isFunction(_);\n * // => true\n *\n * _.isFunction(/abc/);\n * // => false\n */\nfunction isFunction(value) {\n  // The use of `Object#toString` avoids issues with the `typeof` operator\n  // in Safari 8 which returns 'object' for typed array and weak map constructors,\n  // and PhantomJS 1.9 which returns 'function' for `NodeList` instances.\n  var tag = (0, _isObject2.default)(value) ? objectToString.call(value) : '';\n  return tag == funcTag || tag == genTag;\n}\n\nexports.default = isFunction;\n\n/***/ }),\n/* 149 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _isArray = __webpack_require__(11);\n\nvar _isArray2 = _interopRequireDefault(_isArray);\n\nvar _isObjectLike = __webpack_require__(43);\n\nvar _isObjectLike2 = _interopRequireDefault(_isObjectLike);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** `Object#toString` result references. */\nvar stringTag = '[object String]';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/**\n * Used to resolve the\n * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)\n * of values.\n */\nvar objectToString = objectProto.toString;\n\n/**\n * Checks if `value` is classified as a `String` primitive or object.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is correctly classified,\n *  else `false`.\n * @example\n *\n * _.isString('abc');\n * // => true\n *\n * _.isString(1);\n * // => false\n */\nfunction isString(value) {\n  return typeof value == 'string' || !(0, _isArray2.default)(value) && (0, _isObjectLike2.default)(value) && objectToString.call(value) == stringTag;\n}\n\nexports.default = isString;\n\n/***/ }),\n/* 150 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _basePullAll = __webpack_require__(132);\n\nvar _basePullAll2 = _interopRequireDefault(_basePullAll);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * This method is like `_.pull` except that it accepts an array of values to remove.\n *\n * **Note:** Unlike `_.difference`, this method mutates `array`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {Array} values The values to remove.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = [1, 2, 3, 1, 2, 3];\n *\n * _.pullAll(array, [2, 3]);\n * console.log(array);\n * // => [1, 1]\n */\nfunction pullAll(array, values) {\n  return array && array.length && values && values.length ? (0, _basePullAll2.default)(array, values) : array;\n}\n\nexports.default = pullAll;\n\n/***/ }),\n/* 151 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _apply = __webpack_require__(197);\n\nvar _apply2 = _interopRequireDefault(_apply);\n\nvar _arrayMap = __webpack_require__(26);\n\nvar _arrayMap2 = _interopRequireDefault(_arrayMap);\n\nvar _unzip = __webpack_require__(98);\n\nvar _unzip2 = _interopRequireDefault(_unzip);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * This method is like `_.unzip` except that it accepts `iteratee` to specify\n * how regrouped values should be combined. The iteratee is invoked with the\n * elements of each group: (...group).\n *\n * @static\n * @memberOf _\n * @since 3.8.0\n * @category Array\n * @param {Array} array The array of grouped elements to process.\n * @param {Function} [iteratee=_.identity] The function to combine\n *  regrouped values.\n * @returns {Array} Returns the new array of regrouped elements.\n * @example\n *\n * var zipped = _.zip([1, 2], [10, 20], [100, 200]);\n * // => [[1, 10, 100], [2, 20, 200]]\n *\n * _.unzipWith(zipped, _.add);\n * // => [3, 30, 300]\n */\nfunction unzipWith(array, iteratee) {\n  if (!(array && array.length)) {\n    return [];\n  }\n  var result = (0, _unzip2.default)(array);\n  if (iteratee == null) {\n    return result;\n  }\n  return (0, _arrayMap2.default)(result, function (group) {\n    return (0, _apply2.default)(iteratee, undefined, group);\n  });\n}\n\nexports.default = unzipWith;\n\n/***/ }),\n/* 152 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = toMap;\n\nvar _isPlainObject = __webpack_require__(97);\n\nvar _isPlainObject2 = _interopRequireDefault(_isPlainObject);\n\nvar _objecttomap = __webpack_require__(276);\n\nvar _objecttomap2 = _interopRequireDefault(_objecttomap);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Transforms object or iterable to map. Iterable needs to be in the format acceptable by the `Map` constructor.\n *\n *\t\tmap = toMap( { 'foo': 1, 'bar': 2 } );\n *\t\tmap = toMap( [ [ 'foo', 1 ], [ 'bar', 2 ] ] );\n *\t\tmap = toMap( anotherMap );\n *\n * @param {Object|Iterable} data Object or iterable to transform.\n * @returns {Map} Map created from data.\n */\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/tomap\n */\n\nfunction toMap(data) {\n  if ((0, _isPlainObject2.default)(data)) {\n    return (0, _objecttomap2.default)(data);\n  } else {\n    return new Map(data);\n  }\n}\n\n/***/ }),\n/* 153 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nvar _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; };\n\nvar g;\n\n// This works in non-strict mode\ng = function () {\n\treturn this;\n}();\n\ntry {\n\t// This works if eval is allowed (see CSP)\n\tg = g || Function(\"return this\")() || (1, eval)(\"this\");\n} catch (e) {\n\t// This works if the window reference is available\n\tif ((typeof window === \"undefined\" ? \"undefined\" : _typeof(window)) === \"object\") g = window;\n}\n\n// g can still be undefined, but nothing to do about it...\n// We return undefined, instead of nothing here, so it's\n// easier to handle this case. if(!global) { ...}\n\nmodule.exports = g;\n\n/***/ }),\n/* 154 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _plugin = __webpack_require__(2);\n\nvar _plugin2 = _interopRequireDefault(_plugin);\n\nvar _buildmodelconverter = __webpack_require__(45);\n\nvar _buildmodelconverter2 = _interopRequireDefault(_buildmodelconverter);\n\nvar _buildviewconverter = __webpack_require__(46);\n\nvar _buildviewconverter2 = _interopRequireDefault(_buildviewconverter);\n\nvar _toggleattributecommand = __webpack_require__(157);\n\nvar _toggleattributecommand2 = _interopRequireDefault(_toggleattributecommand);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module basic-styles/boldengine\n */\n\nvar BOLD = 'bold';\n\n/**\n * The bold engine feature.\n *\n * It registers the `bold` command and introduces the `bold` attribute in the model which renders to the view\n * as a `<strong>` element.\n *\n * @extends module:core/plugin~Plugin\n */\n\nvar BoldEngine = function (_Plugin) {\n\t_inherits(BoldEngine, _Plugin);\n\n\tfunction BoldEngine() {\n\t\t_classCallCheck(this, BoldEngine);\n\n\t\treturn _possibleConstructorReturn(this, (BoldEngine.__proto__ || Object.getPrototypeOf(BoldEngine)).apply(this, arguments));\n\t}\n\n\t_createClass(BoldEngine, [{\n\t\tkey: 'init',\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tvalue: function init() {\n\t\t\tvar editor = this.editor;\n\t\t\tvar data = editor.data;\n\t\t\tvar editing = editor.editing;\n\n\t\t\t// Allow bold attribute on all inline nodes.\n\t\t\teditor.document.schema.allow({ name: '$inline', attributes: [BOLD] });\n\n\t\t\t// Build converter from model to view for data and editing pipelines.\n\t\t\t(0, _buildmodelconverter2.default)().for(data.modelToView, editing.modelToView).fromAttribute(BOLD).toElement('strong');\n\n\t\t\t// Build converter from view to model for data pipeline.\n\t\t\t(0, _buildviewconverter2.default)().for(data.viewToModel).fromElement('strong').fromElement('b').fromAttribute('style', { 'font-weight': 'bold' }).toAttribute(BOLD, true);\n\n\t\t\t// Create bold command.\n\t\t\teditor.commands.set(BOLD, new _toggleattributecommand2.default(editor, BOLD));\n\t\t}\n\t}]);\n\n\treturn BoldEngine;\n}(_plugin2.default);\n\nexports.default = BoldEngine;\n\n/***/ }),\n/* 155 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _plugin = __webpack_require__(2);\n\nvar _plugin2 = _interopRequireDefault(_plugin);\n\nvar _buildmodelconverter = __webpack_require__(45);\n\nvar _buildmodelconverter2 = _interopRequireDefault(_buildmodelconverter);\n\nvar _buildviewconverter = __webpack_require__(46);\n\nvar _buildviewconverter2 = _interopRequireDefault(_buildviewconverter);\n\nvar _toggleattributecommand = __webpack_require__(157);\n\nvar _toggleattributecommand2 = _interopRequireDefault(_toggleattributecommand);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module basic-styles/italicengine\n */\n\nvar ITALIC = 'italic';\n\n/**\n * The italic engine feature.\n *\n * It registers the `italic` command and introduces the `italic` attribute in the model which renders to the view\n * as an `<em>` element.\n *\n * @extends module:core/plugin~Plugin\n */\n\nvar ItalicEngine = function (_Plugin) {\n\t_inherits(ItalicEngine, _Plugin);\n\n\tfunction ItalicEngine() {\n\t\t_classCallCheck(this, ItalicEngine);\n\n\t\treturn _possibleConstructorReturn(this, (ItalicEngine.__proto__ || Object.getPrototypeOf(ItalicEngine)).apply(this, arguments));\n\t}\n\n\t_createClass(ItalicEngine, [{\n\t\tkey: 'init',\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tvalue: function init() {\n\t\t\tvar editor = this.editor;\n\t\t\tvar data = editor.data;\n\t\t\tvar editing = editor.editing;\n\n\t\t\t// Allow italic attribute on all inline nodes.\n\t\t\teditor.document.schema.allow({ name: '$inline', attributes: [ITALIC] });\n\n\t\t\t// Build converter from model to view for data and editing pipelines.\n\t\t\t(0, _buildmodelconverter2.default)().for(data.modelToView, editing.modelToView).fromAttribute(ITALIC).toElement('em');\n\n\t\t\t// Build converter from view to model for data pipeline.\n\t\t\t(0, _buildviewconverter2.default)().for(data.viewToModel).fromElement('em').fromElement('i').fromAttribute('style', { 'font-style': 'italic' }).toAttribute(ITALIC, true);\n\n\t\t\t// Create italic command.\n\t\t\teditor.commands.set(ITALIC, new _toggleattributecommand2.default(editor, ITALIC));\n\t\t}\n\t}]);\n\n\treturn ItalicEngine;\n}(_plugin2.default);\n\nexports.default = ItalicEngine;\n\n/***/ }),\n/* 156 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\nexports.default = isAttributeAllowedInSelection;\n\nvar _treewalker = __webpack_require__(38);\n\nvar _treewalker2 = _interopRequireDefault(_treewalker);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Checks {@link module:engine/model/document~Document#schema} if attribute is allowed in selection:\n *\n * * if selection is on range, the command is enabled if any of nodes in that range can have bold,\n * * if selection is collapsed, the command is enabled if text with bold is allowed in that node.\n *\n * @param {String} attribute Attribute key.\n * @param {module:engine/model/selection~Selection} selection Selection which ranges will be validate.\n * @param {module:engine/model/schema~Schema} schema Document schema.\n * @returns {Boolean}\n */\nfunction isAttributeAllowedInSelection(attribute, selection, schema) {\n\tif (selection.isCollapsed) {\n\t\t// Check whether schema allows for a test with `attributeKey` in caret position.\n\t\treturn schema.check({ name: '$text', inside: selection.getFirstPosition(), attributes: attribute });\n\t} else {\n\t\tvar ranges = selection.getRanges();\n\n\t\t// For all ranges, check nodes in them until you find a node that is allowed to have `attributeKey` attribute.\n\t\tvar _iteratorNormalCompletion = true;\n\t\tvar _didIteratorError = false;\n\t\tvar _iteratorError = undefined;\n\n\t\ttry {\n\t\t\tfor (var _iterator = ranges[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\tvar range = _step.value;\n\n\t\t\t\tvar walker = new _treewalker2.default({ boundaries: range, mergeCharacters: true });\n\t\t\t\tvar last = walker.position;\n\t\t\t\tvar step = walker.next();\n\n\t\t\t\t// Walk the range.\n\t\t\t\twhile (!step.done) {\n\t\t\t\t\t// If returned item does not have name property, it is a model.TextFragment.\n\t\t\t\t\tvar name = step.value.item.name || '$text';\n\n\t\t\t\t\tif (schema.check({ name: name, inside: last, attributes: attribute })) {\n\t\t\t\t\t\t// If we found a node that is allowed to have the attribute, return true.\n\t\t\t\t\t\treturn true;\n\t\t\t\t\t}\n\n\t\t\t\t\tlast = walker.position;\n\t\t\t\t\tstep = walker.next();\n\t\t\t\t}\n\t\t\t}\n\t\t} catch (err) {\n\t\t\t_didIteratorError = true;\n\t\t\t_iteratorError = err;\n\t\t} finally {\n\t\t\ttry {\n\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t_iterator.return();\n\t\t\t\t}\n\t\t\t} finally {\n\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\t// If we haven't found such node, return false.\n\treturn false;\n} /**\n   * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n   * For licensing, see LICENSE.md.\n   */\n\n/**\n * @module core/command/helpers/isattributeallowedinselection\n */\n\n/***/ }),\n/* 157 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _command = __webpack_require__(15);\n\nvar _command2 = _interopRequireDefault(_command);\n\nvar _getschemavalidranges = __webpack_require__(100);\n\nvar _getschemavalidranges2 = _interopRequireDefault(_getschemavalidranges);\n\nvar _isattributeallowedinselection = __webpack_require__(156);\n\nvar _isattributeallowedinselection2 = _interopRequireDefault(_isattributeallowedinselection);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module core/command/toggleattributecommand\n */\n\n/**\n * An extension of the base {@link module:core/command/command~Command} class, which provides utilities for a command which toggles a single\n * attribute on a text or an element. `ToggleAttributeCommand` uses {@link module:engine/model/document~Document#selection}\n * to decide which nodes (if any) should be changed, and applies or removes attributes from them.\n *\n * The command checks {@link module:engine/model/document~Document#schema} to decide if it should be enabled.\n */\nvar ToggleAttributeCommand = function (_Command) {\n\t_inherits(ToggleAttributeCommand, _Command);\n\n\t/**\n  * @see module:core/command/command~Command\n  * @param {module:core/editor/editor~Editor} editor\n  * @param {String} attributeKey Attribute that will be set by the command.\n  */\n\tfunction ToggleAttributeCommand(editor, attributeKey) {\n\t\t_classCallCheck(this, ToggleAttributeCommand);\n\n\t\t/**\n   * Attribute that will be set by the command.\n   *\n   * @member {String}\n   */\n\t\tvar _this = _possibleConstructorReturn(this, (ToggleAttributeCommand.__proto__ || Object.getPrototypeOf(ToggleAttributeCommand)).call(this, editor));\n\n\t\t_this.attributeKey = attributeKey;\n\n\t\t/**\n   * Flag indicating whether command is active. For collapsed selection it means that typed characters will have\n   * the command's attribute set. For range selection it means that all nodes inside have the attribute applied.\n   *\n   * @observable\n   * @member {Boolean} #value\n   */\n\t\t_this.set('value', false);\n\n\t\t_this.listenTo(_this.editor.document.selection, 'change:attribute', function () {\n\t\t\t_this.value = _this.editor.document.selection.hasAttribute(_this.attributeKey);\n\t\t});\n\t\treturn _this;\n\t}\n\n\t/**\n  * Checks if {@link module:engine/model/document~Document#schema} allows to create attribute in\n  * {@link module:engine/model/document~Document#selection}.\n  *\n  * @private\n  * @returns {Boolean}\n  */\n\n\n\t_createClass(ToggleAttributeCommand, [{\n\t\tkey: '_checkEnabled',\n\t\tvalue: function _checkEnabled() {\n\t\t\tvar document = this.editor.document;\n\n\t\t\treturn (0, _isattributeallowedinselection2.default)(this.attributeKey, document.selection, document.schema);\n\t\t}\n\n\t\t/**\n   * Executes the command: adds or removes attributes to nodes or selection.\n   *\n   * If the command is active (`value == true`), it will remove attributes. Otherwise, it will set attributes.\n   *\n   * The execution result differs, depending on the {@link module:engine/model/document~Document#selection}:\n   * * if selection is on a range, the command applies the attribute on all nodes in that ranges\n   * (if they are allowed to have this attribute by the {@link module:engine/model/schema~Schema schema}),\n   * * if selection is collapsed in non-empty node, the command applies attribute to the\n   * {@link module:engine/model/document~Document#selection} itself (note that typed characters copy attributes from selection),\n   * * if selection is collapsed in empty node, the command applies attribute to the parent node of selection (note\n   * that selection inherits all attributes from a node if it is in empty node).\n   *\n   * If the command is disabled (`isEnabled == false`) when it is executed, nothing will happen.\n   *\n   * @private\n   * @param {Object} [options] Options of command.\n   * @param {Boolean} [options.forceValue] If set it will force command behavior. If `true`, command will apply attribute,\n   * otherwise command will remove attribute. If not set, command will look for it's current value to decide what it should do.\n   * @param {module:engine/model/batch~Batch} [options.batch] Batch to group undo steps.\n   */\n\n\t}, {\n\t\tkey: '_doExecute',\n\t\tvalue: function _doExecute() {\n\t\t\tvar _this2 = this;\n\n\t\t\tvar options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n\n\t\t\tvar document = this.editor.document;\n\t\t\tvar selection = document.selection;\n\t\t\tvar value = options.forceValue === undefined ? !this.value : options.forceValue;\n\n\t\t\t// If selection has non-collapsed ranges, we change attribute on nodes inside those ranges.\n\t\t\tdocument.enqueueChanges(function () {\n\t\t\t\tif (selection.isCollapsed) {\n\t\t\t\t\tif (value) {\n\t\t\t\t\t\tselection.setAttribute(_this2.attributeKey, true);\n\t\t\t\t\t} else {\n\t\t\t\t\t\tselection.removeAttribute(_this2.attributeKey);\n\t\t\t\t\t}\n\t\t\t\t} else {\n\t\t\t\t\tvar ranges = (0, _getschemavalidranges2.default)(_this2.attributeKey, selection.getRanges(), document.schema);\n\n\t\t\t\t\t// Keep it as one undo step.\n\t\t\t\t\tvar batch = options.batch || document.batch();\n\n\t\t\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\t\t\tvar _didIteratorError = false;\n\t\t\t\t\tvar _iteratorError = undefined;\n\n\t\t\t\t\ttry {\n\t\t\t\t\t\tfor (var _iterator = ranges[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\t\t\tvar range = _step.value;\n\n\t\t\t\t\t\t\tif (value) {\n\t\t\t\t\t\t\t\tbatch.setAttribute(range, _this2.attributeKey, value);\n\t\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\t\tbatch.removeAttribute(range, _this2.attributeKey);\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t} catch (err) {\n\t\t\t\t\t\t_didIteratorError = true;\n\t\t\t\t\t\t_iteratorError = err;\n\t\t\t\t\t} finally {\n\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} finally {\n\t\t\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t});\n\t\t}\n\t}]);\n\n\treturn ToggleAttributeCommand;\n}(_command2.default);\n\nexports.default = ToggleAttributeCommand;\n\n/***/ }),\n/* 158 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module engine/conversion/mapper\n */\n\nvar _position = __webpack_require__(1);\n\nvar _position2 = _interopRequireDefault(_position);\n\nvar _range = __webpack_require__(3);\n\nvar _range2 = _interopRequireDefault(_range);\n\nvar _position3 = __webpack_require__(24);\n\nvar _position4 = _interopRequireDefault(_position3);\n\nvar _range3 = __webpack_require__(33);\n\nvar _range4 = _interopRequireDefault(_range3);\n\nvar _text = __webpack_require__(29);\n\nvar _text2 = _interopRequireDefault(_text);\n\nvar _emittermixin = __webpack_require__(8);\n\nvar _emittermixin2 = _interopRequireDefault(_emittermixin);\n\nvar _mix = __webpack_require__(4);\n\nvar _mix2 = _interopRequireDefault(_mix);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * Maps elements and positions between {@link module:engine/view/document~Document view} and {@link module:engine/model/model model}.\n *\n * Mapper use bound elements to find corresponding elements and positions, so, to get proper results,\n * all model elements should be {@link module:engine/conversion/mapper~Mapper#bindElements bound}.\n *\n * To map complex model to/from view relations, you may provide custom callbacks for\n * {@link module:engine/conversion/mapper~Mapper#event:modelToViewPosition modelToViewPosition event} and\n * {@link module:engine/conversion/mapper~Mapper#event:viewToModelPosition viewToModelPosition event} that are fired whenever\n * a position mapping request occurs.\n * Those events are fired by {@link module:engine/conversion/mapper~Mapper#toViewPosition toViewPosition}\n * and {@link module:engine/conversion/mapper~Mapper#toModelPosition toModelPosition} methods. `Mapper` adds it's own default callbacks\n * with `'lowest'` priority. To override default `Mapper` mapping, add custom callback with higher priority and\n * stop the event.\n */\nvar Mapper = function () {\n\t/**\n  * Creates an instance of the mapper.\n  */\n\tfunction Mapper() {\n\t\t_classCallCheck(this, Mapper);\n\n\t\t/**\n   * Model element to view element mapping.\n   *\n   * @private\n   * @member {WeakMap}\n   */\n\t\tthis._modelToViewMapping = new WeakMap();\n\n\t\t/**\n   * View element to model element mapping.\n   *\n   * @private\n   * @member {WeakMap}\n   */\n\t\tthis._viewToModelMapping = new WeakMap();\n\n\t\t/**\n   * A map containing callbacks between view element names and functions evaluating length of view elements\n   * in model.\n   *\n   * @private\n   * @member {Map}\n   */\n\t\tthis._viewToModelLengthCallbacks = new Map();\n\t}\n\n\t/**\n  * Marks model and view elements as corresponding. Corresponding elements can be retrieved by using\n  * the {@link module:engine/conversion/mapper~Mapper#toModelElement toModelElement} and\n  * {@link module:engine/conversion/mapper~Mapper#toViewElement toViewElement} methods.\n  * The information that elements are bound is also used to translate positions.\n  *\n  * @param {module:engine/model/element~Element} modelElement Model element.\n  * @param {module:engine/view/element~Element} viewElement View element.\n  */\n\n\n\t_createClass(Mapper, [{\n\t\tkey: 'bindElements',\n\t\tvalue: function bindElements(modelElement, viewElement) {\n\t\t\tthis._modelToViewMapping.set(modelElement, viewElement);\n\t\t\tthis._viewToModelMapping.set(viewElement, modelElement);\n\t\t}\n\n\t\t/**\n   * Unbinds given {@link module:engine/view/element~Element view element} from the map.\n   *\n   * @param {module:engine/view/element~Element} viewElement View element to unbind.\n   */\n\n\t}, {\n\t\tkey: 'unbindViewElement',\n\t\tvalue: function unbindViewElement(viewElement) {\n\t\t\tvar modelElement = this.toModelElement(viewElement);\n\n\t\t\tthis._unbindElements(modelElement, viewElement);\n\t\t}\n\n\t\t/**\n   * Unbinds given {@link module:engine/model/element~Element model element} from the map.\n   *\n   * @param {module:engine/model/element~Element} modelElement Model element to unbind.\n   */\n\n\t}, {\n\t\tkey: 'unbindModelElement',\n\t\tvalue: function unbindModelElement(modelElement) {\n\t\t\tvar viewElement = this.toViewElement(modelElement);\n\n\t\t\tthis._unbindElements(modelElement, viewElement);\n\t\t}\n\n\t\t/**\n   * Removes all model to view and view to model bindings.\n   */\n\n\t}, {\n\t\tkey: 'clearBindings',\n\t\tvalue: function clearBindings() {\n\t\t\tthis._modelToViewMapping = new WeakMap();\n\t\t\tthis._viewToModelMapping = new WeakMap();\n\t\t}\n\n\t\t/**\n   * Gets the corresponding model element.\n   *\n   * **Note:** {@link module:engine/view/uielement~UIElement} does not have corresponding element in model.\n   *\n   * @param {module:engine/view/element~Element} viewElement View element.\n   * @returns {module:engine/model/element~Element|undefined} Corresponding model element or `undefined` if not found.\n   */\n\n\t}, {\n\t\tkey: 'toModelElement',\n\t\tvalue: function toModelElement(viewElement) {\n\t\t\treturn this._viewToModelMapping.get(viewElement);\n\t\t}\n\n\t\t/**\n   * Gets the corresponding view element.\n   *\n   * @param {module:engine/model/element~Element} modelElement Model element.\n   * @returns {module:engine/view/element~Element|undefined} Corresponding view element or `undefined` if not found.\n   */\n\n\t}, {\n\t\tkey: 'toViewElement',\n\t\tvalue: function toViewElement(modelElement) {\n\t\t\treturn this._modelToViewMapping.get(modelElement);\n\t\t}\n\n\t\t/**\n   * Gets the corresponding model range.\n   *\n   * @param {module:engine/view/range~Range} viewRange View range.\n   * @returns {module:engine/model/range~Range} Corresponding model range.\n   */\n\n\t}, {\n\t\tkey: 'toModelRange',\n\t\tvalue: function toModelRange(viewRange) {\n\t\t\treturn new _range2.default(this.toModelPosition(viewRange.start), this.toModelPosition(viewRange.end));\n\t\t}\n\n\t\t/**\n   * Gets the corresponding view range.\n   *\n   * @param {module:engine/model/range~Range} modelRange Model range.\n   * @returns {module:engine/view/range~Range} Corresponding view range.\n   */\n\n\t}, {\n\t\tkey: 'toViewRange',\n\t\tvalue: function toViewRange(modelRange) {\n\t\t\treturn new _range4.default(this.toViewPosition(modelRange.start), this.toViewPosition(modelRange.end));\n\t\t}\n\n\t\t/**\n   * Gets the corresponding model position.\n   *\n   * @fires viewToModelPosition\n   * @param {module:engine/view/position~Position} viewPosition View position.\n   * @returns {module:engine/model/position~Position} Corresponding model position.\n   */\n\n\t}, {\n\t\tkey: 'toModelPosition',\n\t\tvalue: function toModelPosition(viewPosition) {\n\t\t\tvar data = {\n\t\t\t\tviewPosition: viewPosition,\n\t\t\t\tmodelPosition: this._defaultToModelPosition(viewPosition),\n\t\t\t\tmapper: this\n\t\t\t};\n\n\t\t\tthis.fire('viewToModelPosition', data);\n\n\t\t\treturn data.modelPosition;\n\t\t}\n\n\t\t/**\n   * Maps model position to view position using default mapper algorithm.\n   *\n   * @private\n   * @param {module:engine/model/position~Position} modelPosition\n   * @returns {module:engine/view/position~Position} View position mapped from model position.\n   */\n\n\t}, {\n\t\tkey: '_defaultToViewPosition',\n\t\tvalue: function _defaultToViewPosition(modelPosition) {\n\t\t\tvar viewContainer = this._modelToViewMapping.get(modelPosition.parent);\n\n\t\t\treturn this._findPositionIn(viewContainer, modelPosition.offset);\n\t\t}\n\n\t\t/**\n   * Gets the corresponding view position.\n   *\n   * @fires modelToViewPosition\n   * @param {module:engine/model/position~Position} modelPosition Model position.\n   * @returns {module:engine/view/position~Position} Corresponding view position.\n   */\n\n\t}, {\n\t\tkey: 'toViewPosition',\n\t\tvalue: function toViewPosition(modelPosition) {\n\t\t\tvar data = {\n\t\t\t\tviewPosition: this._defaultToViewPosition(modelPosition),\n\t\t\t\tmodelPosition: modelPosition,\n\t\t\t\tmapper: this\n\t\t\t};\n\n\t\t\tthis.fire('modelToViewPosition', data);\n\n\t\t\treturn data.viewPosition;\n\t\t}\n\n\t\t/**\n   * Maps view position to model position using default mapper algorithm.\n   *\n   * @private\n   * @param {module:engine/view/position~Position} viewPosition\n   * @returns {module:engine/model/position~Position} Model position mapped from view position.\n   */\n\n\t}, {\n\t\tkey: '_defaultToModelPosition',\n\t\tvalue: function _defaultToModelPosition(viewPosition) {\n\t\t\tvar viewBlock = viewPosition.parent;\n\t\t\tvar modelParent = this._viewToModelMapping.get(viewBlock);\n\n\t\t\twhile (!modelParent) {\n\t\t\t\tviewBlock = viewBlock.parent;\n\t\t\t\tmodelParent = this._viewToModelMapping.get(viewBlock);\n\t\t\t}\n\n\t\t\tvar modelOffset = this._toModelOffset(viewPosition.parent, viewPosition.offset, viewBlock);\n\n\t\t\treturn _position2.default.createFromParentAndOffset(modelParent, modelOffset);\n\t\t}\n\n\t\t/**\n   * Registers a callback that evaluates the length in the model of a view element with given name.\n   *\n   * The callback is fired with one argument, which is a view element instance. The callback is expected to return\n   * a number representing the length of view element in model.\n   *\n   *\t\t// List item in view may contain nested list, which have other list items. In model though,\n   *\t\t// the lists are represented by flat structure. Because of those differences, length of list view element\n   *\t\t// may be greater than one. In the callback it's checked how many nested list items are in evaluated list item.\n   *\n   *\t\tfunction getViewListItemLength( element ) {\n   *\t\t\tlet length = 1;\n   *\n   *\t\t\tfor ( let child of element.getChildren() ) {\n   *\t\t\t\tif ( child.name == 'ul' || child.name == 'ol' ) {\n   *\t\t\t\t\tfor ( let item of child.getChildren() ) {\n   *\t\t\t\t\t\tlength += getViewListItemLength( item );\n   *\t\t\t\t\t}\n   *\t\t\t\t}\n   *\t\t\t}\n   *\n   *\t\t\treturn length;\n   *\t\t}\n   *\n   *\t\tmapper.registerViewToModelLength( 'li', getViewListItemLength );\n   *\n   * @param {String} viewElementName Name of view element for which callback is registered.\n   * @param {Function} lengthCallback Function return a length of view element instance in model.\n   */\n\n\t}, {\n\t\tkey: 'registerViewToModelLength',\n\t\tvalue: function registerViewToModelLength(viewElementName, lengthCallback) {\n\t\t\tthis._viewToModelLengthCallbacks.set(viewElementName, lengthCallback);\n\t\t}\n\n\t\t/**\n   * Calculates model offset based on the view position and the block element.\n   *\n   * Example:\n   *\n   *\t\t<p>foo<b>ba|r</b></p> // _toModelOffset( b, 2, p ) -> 5\n   *\n   * Is a sum of:\n   *\n   *\t\t<p>foo|<b>bar</b></p> // _toModelOffset( p, 3, p ) -> 3\n   *\t\t<p>foo<b>ba|r</b></p> // _toModelOffset( b, 2, b ) -> 2\n   *\n   * @private\n   * @param {module:engine/view/element~Element} viewParent Position parent.\n   * @param {Number} viewOffset Position offset.\n   * @param {module:engine/view/element~Element} viewBlock Block used as a base to calculate offset.\n   * @returns {Number} Offset in the model.\n   */\n\n\t}, {\n\t\tkey: '_toModelOffset',\n\t\tvalue: function _toModelOffset(viewParent, viewOffset, viewBlock) {\n\t\t\tif (viewBlock != viewParent) {\n\t\t\t\t// See example.\n\t\t\t\tvar offsetToParentStart = this._toModelOffset(viewParent.parent, viewParent.index, viewBlock);\n\t\t\t\tvar offsetInParent = this._toModelOffset(viewParent, viewOffset, viewParent);\n\n\t\t\t\treturn offsetToParentStart + offsetInParent;\n\t\t\t}\n\n\t\t\t// viewBlock == viewParent, so we need to calculate the offset in the parent element.\n\n\t\t\t// If the position is a text it is simple (\"ba|r\" -> 2).\n\t\t\tif (viewParent.is('text')) {\n\t\t\t\treturn viewOffset;\n\t\t\t}\n\n\t\t\t// If the position is in an element we need to sum lengths of siblings ( <b> bar </b> foo | -> 3 + 3 = 6 ).\n\t\t\tvar modelOffset = 0;\n\n\t\t\tfor (var i = 0; i < viewOffset; i++) {\n\t\t\t\tmodelOffset += this.getModelLength(viewParent.getChild(i));\n\t\t\t}\n\n\t\t\treturn modelOffset;\n\t\t}\n\n\t\t/**\n   * Removes binding between given elements.\n   *\n   * @private\n   * @param {module:engine/model/element~Element} modelElement Model element to unbind.\n   * @param {module:engine/view/element~Element} viewElement View element to unbind.\n   */\n\n\t}, {\n\t\tkey: '_unbindElements',\n\t\tvalue: function _unbindElements(modelElement, viewElement) {\n\t\t\tthis._viewToModelMapping.delete(viewElement);\n\t\t\tthis._modelToViewMapping.delete(modelElement);\n\t\t}\n\n\t\t/**\n   * Gets the length of the view element in the model.\n   *\n   * The length is calculated as follows:\n   * * if {@link #registerViewToModelLength length mapping callback} is provided for given `viewNode` it is used to\n   * evaluate model length (`viewNode` is used as first and only parameter passed to the callback),\n   * * length of a {@link module:engine/view/text~Text text node} is equal to the length of it's\n   * {@link module:engine/view/text~Text#data data},\n   * * length of a {@link module:engine/view/uielement~UIElement ui element} is equal to 0,\n   * * length of a mapped {@link module:engine/view/element~Element element} is equal to 1,\n   * * length of a not-mapped {@link module:engine/view/element~Element element} is equal to the length of it's children.\n   *\n   * Examples:\n   *\n   *\t\tfoo                          -> 3 // Text length is equal to it's data length.\n   *\t\t<p>foo</p>                   -> 1 // Length of an element which is mapped is by default equal to 1.\n   *\t\t<b>foo</b>                   -> 3 // Length of an element which is not mapped is a length of its children.\n   *\t\t<div><p>x</p><p>y</p></div>  -> 2 // Assuming that <div> is not mapped and <p> are mapped.\n   *\n   * @param {module:engine/view/element~Element} viewNode View node.\n   * @returns {Number} Length of the node in the tree model.\n   */\n\n\t}, {\n\t\tkey: 'getModelLength',\n\t\tvalue: function getModelLength(viewNode) {\n\t\t\tif (this._viewToModelLengthCallbacks.get(viewNode.name)) {\n\t\t\t\tvar callback = this._viewToModelLengthCallbacks.get(viewNode.name);\n\n\t\t\t\treturn callback(viewNode);\n\t\t\t} else if (this._viewToModelMapping.has(viewNode)) {\n\t\t\t\treturn 1;\n\t\t\t} else if (viewNode.is('text')) {\n\t\t\t\treturn viewNode.data.length;\n\t\t\t} else if (viewNode.is('uiElement')) {\n\t\t\t\treturn 0;\n\t\t\t} else {\n\t\t\t\tvar len = 0;\n\n\t\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\t\tvar _didIteratorError = false;\n\t\t\t\tvar _iteratorError = undefined;\n\n\t\t\t\ttry {\n\t\t\t\t\tfor (var _iterator = viewNode.getChildren()[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\t\tvar child = _step.value;\n\n\t\t\t\t\t\tlen += this.getModelLength(child);\n\t\t\t\t\t}\n\t\t\t\t} catch (err) {\n\t\t\t\t\t_didIteratorError = true;\n\t\t\t\t\t_iteratorError = err;\n\t\t\t\t} finally {\n\t\t\t\t\ttry {\n\t\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t\t}\n\t\t\t\t\t} finally {\n\t\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\treturn len;\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Finds the position in the view node (or its children) with the expected model offset.\n   *\n   * Example:\n   *\n   *\t\t<p>fo<b>bar</b>bom</p> -> expected offset: 4\n   *\n   *\t\t_findPositionIn( p, 4 ):\n   *\t\t<p>|fo<b>bar</b>bom</p> -> expected offset: 4, actual offset: 0\n   *\t\t<p>fo|<b>bar</b>bom</p> -> expected offset: 4, actual offset: 2\n   *\t\t<p>fo<b>bar</b>|bom</p> -> expected offset: 4, actual offset: 5 -> we are too far\n   *\n   *\t\t_findPositionIn( b, 4 - ( 5 - 3 ) ):\n   *\t\t<p>fo<b>|bar</b>bom</p> -> expected offset: 2, actual offset: 0\n   *\t\t<p>fo<b>bar|</b>bom</p> -> expected offset: 2, actual offset: 3 -> we are too far\n   *\n   *\t\t_findPositionIn( bar, 2 - ( 3 - 3 ) ):\n   *\t\tWe are in the text node so we can simple find the offset.\n   *\t\t<p>fo<b>ba|r</b>bom</p> -> expected offset: 2, actual offset: 2 -> position found\n   *\n   * @private\n   * @param {module:engine/view/element~Element} viewParent Tree view element in which we are looking for the position.\n   * @param {Number} expectedOffset Expected offset.\n   * @returns {module:engine/view/position~Position} Found position.\n   */\n\n\t}, {\n\t\tkey: '_findPositionIn',\n\t\tvalue: function _findPositionIn(viewParent, expectedOffset) {\n\t\t\t// Last scanned view node.\n\t\t\tvar viewNode = void 0;\n\t\t\t// Length of the last scanned view node.\n\t\t\tvar lastLength = 0;\n\n\t\t\tvar modelOffset = 0;\n\t\t\tvar viewOffset = 0;\n\n\t\t\t// In the text node it is simple: offset in the model equals offset in the text.\n\t\t\tif (viewParent.is('text')) {\n\t\t\t\treturn new _position4.default(viewParent, expectedOffset);\n\t\t\t}\n\n\t\t\t// In other cases we add lengths of child nodes to find the proper offset.\n\n\t\t\t// If it is smaller we add the length.\n\t\t\twhile (modelOffset < expectedOffset) {\n\t\t\t\tviewNode = viewParent.getChild(viewOffset);\n\t\t\t\tlastLength = this.getModelLength(viewNode);\n\t\t\t\tmodelOffset += lastLength;\n\t\t\t\tviewOffset++;\n\t\t\t}\n\n\t\t\t// If it equals we found the position.\n\t\t\tif (modelOffset == expectedOffset) {\n\t\t\t\treturn this._moveViewPositionToTextNode(new _position4.default(viewParent, viewOffset));\n\t\t\t}\n\t\t\t// If it is higher we need to enter last child.\n\t\t\telse {\n\t\t\t\t\t// ( modelOffset - lastLength ) is the offset to the child we enter,\n\t\t\t\t\t// so we subtract it from the expected offset to fine the offset in the child.\n\t\t\t\t\treturn this._findPositionIn(viewNode, expectedOffset - (modelOffset - lastLength));\n\t\t\t\t}\n\t\t}\n\n\t\t/**\n   * Because we prefer positions in text nodes over positions next to text node moves view position to the text node\n   * if it was next to it.\n   *\n   *\t\t<p>[]<b>foo</b></p> -> <p>[]<b>foo</b></p> // do not touch if position is not directly next to text\n   *\t\t<p>foo[]<b>foo</b></p> -> <p>foo{}<b>foo</b></p> // move to text node\n   *\t\t<p><b>[]foo</b></p> -> <p><b>{}foo</b></p> // move to text node\n   *\n   * @private\n   * @param {module:engine/view/position~Position} viewPosition Position potentially next to text node.\n   * @returns {module:engine/view/position~Position} Position in text node if possible.\n   */\n\n\t}, {\n\t\tkey: '_moveViewPositionToTextNode',\n\t\tvalue: function _moveViewPositionToTextNode(viewPosition) {\n\t\t\t// If the position is just after text node, put it at the end of that text node.\n\t\t\t// If the position is just before text node, put it at the beginning of that text node.\n\t\t\tvar nodeBefore = viewPosition.nodeBefore;\n\t\t\tvar nodeAfter = viewPosition.nodeAfter;\n\n\t\t\tif (nodeBefore instanceof _text2.default) {\n\t\t\t\treturn new _position4.default(nodeBefore, nodeBefore.data.length);\n\t\t\t} else if (nodeAfter instanceof _text2.default) {\n\t\t\t\treturn new _position4.default(nodeAfter, 0);\n\t\t\t}\n\n\t\t\t// Otherwise, just return the given position.\n\t\t\treturn viewPosition;\n\t\t}\n\t}]);\n\n\treturn Mapper;\n}();\n\nexports.default = Mapper;\n\n\n(0, _mix2.default)(Mapper, _emittermixin2.default);\n\n/**\n * Fired for each model-to-view position mapping request. The purpose of this event is to enable custom model-to-view position\n * mapping. Callbacks added to this event take {@link module:engine/model/position~Position model position} and are expected to calculate\n * {@link module:engine/view/position~Position view position}. Calculated view position should be added as `viewPosition` value in\n * `data` object that is passed as one of parameters to the event callback.\n *\n * \t\t// Assume that \"captionedImage\" model element is converted to <img> and following <span> elements in view,\n * \t\t// and the model element is bound to <img> element. Force mapping model positions inside \"captionedImage\" to that <span> element.\n *\t\tmapper.on( 'modelToViewPosition', ( evt, data ) => {\n *\t\t\tconst positionParent = modelPosition.parent;\n *\n *\t\t\tif ( positionParent.name == 'captionedImage' ) {\n *\t\t\t\tconst viewImg = mapper.toViewElement( positionParent );\n *\t\t\t\tconst viewCaption = viewImg.nextSibling; // The <span> element.\n *\n *\t\t\t\tdata.viewPosition = new ViewPosition( viewCaption, modelPosition.offset );\n *\t\t\t\tevt.stop();\n *\t\t\t}\n *\t\t} );\n *\n * **Note:** these callbacks are called **very often**. For efficiency reasons, it is advised to use them only when position\n * mapping between given model and view elements is unsolvable using just elements mapping and default algorithm. Also,\n * the condition that checks if special case scenario happened should be as simple as possible.\n *\n * @event modelToViewPosition\n * @param {Object} data Data pipeline object that can store and pass data between callbacks. The callback should add\n * `viewPosition` value to that object with calculated {@link module:engine/view/position~Position view position}.\n * @param {module:engine/model/position~Position} data.modelPosition Model position to be mapped.\n * @param {module:engine/view/position~Position} data.viewPosition View position that is a result of mapping\n * `modelPosition` using `Mapper` default algorithm.\n * @param {module:engine/conversion/mapper~Mapper} data.mapper Mapper instance that fired the event.\n */\n\n/**\n * Fired for each view-to-model position mapping request. See {@link module:engine/conversion/mapper~Mapper#event:modelToViewPosition}.\n *\n * \t\t// See example in `modelToViewPosition` event description.\n * \t\t// This custom mapping will map positions from <span> element next to <img> to the \"captionedImage\" element.\n *\t\tmapper.on( 'viewToModelPosition', ( evt, data ) => {\n *\t\t\tconst positionParent = viewPosition.parent;\n *\n *\t\t\tif ( positionParent.hasClass( 'image-caption' ) ) {\n *\t\t\t\tconst viewImg = positionParent.previousSibling;\n *\t\t\t\tconst modelImg = mapper.toModelElement( viewImg );\n *\n *\t\t\t\tdata.modelPosition = new ModelPosition( modelImg, viewPosition.offset );\n *\t\t\t\tevt.stop();\n *\t\t\t}\n *\t\t} );\n *\n * @event viewToModelPosition\n * @param {Object} data Data pipeline object that can store and pass data between callbacks. The callback should add\n * `modelPosition` value to that object with calculated {@link module:engine/model/position~Position model position}.\n * @param {module:engine/view/position~Position} data.viewPosition View position to be mapped.\n * @param {module:engine/model/position~Position} data.modelPosition Model position that is a result of mapping\n * `viewPosition` using `Mapper` default algorithm.\n * @param {module:engine/conversion/mapper~Mapper} data.mapper Mapper instance that fired the event.\n */\n\n/***/ }),\n/* 159 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.convertRangeSelection = convertRangeSelection;\nexports.convertCollapsedSelection = convertCollapsedSelection;\nexports.convertSelectionAttribute = convertSelectionAttribute;\nexports.convertSelectionMarker = convertSelectionMarker;\nexports.clearAttributes = clearAttributes;\nexports.clearFakeSelection = clearFakeSelection;\n\nvar _element = __webpack_require__(20);\n\nvar _element2 = _interopRequireDefault(_element);\n\nvar _range = __webpack_require__(33);\n\nvar _range2 = _interopRequireDefault(_range);\n\nvar _writer = __webpack_require__(77);\n\nvar _writer2 = _interopRequireDefault(_writer);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Contains {@link module:engine/model/selection~Selection model selection} to\n * {@link module:engine/view/selection~Selection view selection} converters for\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher}.\n *\n * @module engine/conversion/model-selection-to-view-converters\n */\n\n/**\n * Function factory, creates a converter that converts non-collapsed {@link module:engine/model/selection~Selection model selection} to\n * {@link module:engine/view/selection~Selection view selection}. The converter consumes appropriate value from `consumable` object\n * and maps model positions from selection to view positions.\n *\n *\t\tmodelDispatcher.on( 'selection', convertRangeSelection() );\n *\n * @returns {Function} Selection converter.\n */\nfunction convertRangeSelection() {\n  return function (evt, data, consumable, conversionApi) {\n    var selection = data.selection;\n\n    if (selection.isCollapsed) {\n      return;\n    }\n\n    if (!consumable.consume(selection, 'selection')) {\n      return;\n    }\n\n    conversionApi.viewSelection.removeAllRanges();\n\n    var _iteratorNormalCompletion = true;\n    var _didIteratorError = false;\n    var _iteratorError = undefined;\n\n    try {\n      for (var _iterator = selection.getRanges()[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n        var range = _step.value;\n\n        var viewRange = conversionApi.mapper.toViewRange(range);\n        conversionApi.viewSelection.addRange(viewRange, selection.isBackward);\n      }\n    } catch (err) {\n      _didIteratorError = true;\n      _iteratorError = err;\n    } finally {\n      try {\n        if (!_iteratorNormalCompletion && _iterator.return) {\n          _iterator.return();\n        }\n      } finally {\n        if (_didIteratorError) {\n          throw _iteratorError;\n        }\n      }\n    }\n  };\n}\n\n/**\n * Function factory, creates a converter that converts collapsed {@link module:engine/model/selection~Selection model selection} to\n * {@link module:engine/view/selection~Selection view selection}. The converter consumes appropriate value from `consumable` object,\n * maps model selection position to view position and breaks {@link module:engine/view/attributeelement~AttributeElement attribute elements}\n * at the selection position.\n *\n *\t\tmodelDispatcher.on( 'selection', convertCollapsedSelection() );\n *\n * Example of view state before and after converting collapsed selection:\n *\n *\t\t   <p><strong>f^oo<strong>bar</p>\n *\t\t-> <p><strong>f</strong>^<strong>oo</strong>bar</p>\n *\n * By breaking attribute elements like `<strong>`, selection is in correct element. See also complementary\n * {@link module:engine/conversion/model-selection-to-view-converters~convertSelectionAttribute attribute converter}\n * for selection attributes,\n * which wraps collapsed selection into view elements. Those converters together ensure, that selection ends up in\n * appropriate attribute elements.\n *\n * See also {@link module:engine/conversion/model-selection-to-view-converters~clearAttributes} which does a clean-up\n * by merging attributes.\n *\n * @returns {Function} Selection converter.\n */\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\nfunction convertCollapsedSelection() {\n  return function (evt, data, consumable, conversionApi) {\n    var selection = data.selection;\n\n    if (!selection.isCollapsed) {\n      return;\n    }\n\n    if (!consumable.consume(selection, 'selection')) {\n      return;\n    }\n\n    var modelPosition = selection.getFirstPosition();\n    var viewPosition = conversionApi.mapper.toViewPosition(modelPosition);\n    var brokenPosition = _writer2.default.breakAttributes(viewPosition);\n\n    conversionApi.viewSelection.removeAllRanges();\n    conversionApi.viewSelection.addRange(new _range2.default(brokenPosition, brokenPosition));\n  };\n}\n\n/**\n * Function factory, creates a converter that converts {@link module:engine/model/selection~Selection model selection} attributes to\n * {@link module:engine/view/attributeelement~AttributeElement view attribute elements}. The converter works only for collapsed selection.\n * The converter consumes appropriate value from `consumable` object, maps model selection position to view position and\n * wraps that position into a view attribute element.\n *\n * The wrapping node depends on passed parameter. If {@link module:engine/view/element~Element} was passed, it will be cloned and\n * the copy will become the wrapping element. If `Function` is provided, it is passed all the parameters of the\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:selectionAttribute selectionAttribute event}.\n * It's expected that the function returns a {@link module:engine/view/attributeelement~AttributeElement}.\n * The result of the function will be the wrapping element.\n *\n *\t\tmodelDispatcher.on( 'selectionAttribute:italic', convertSelectionAttribute( new ViewAttributeElement( 'em' ) ) );\n *\n *\t\tfunction styleElementCreator( styleValue ) {\n *\t\t\tif ( styleValue == 'important' ) {\n *\t\t\t\treturn new ViewAttributeElement( 'strong', { style: 'text-transform:uppercase;' } );\n *\t\t\t} else if ( styleValue == 'gold' ) {\n *\t\t\t\treturn new ViewAttributeElement( 'span', { style: 'color:yellow;' } );\n *\t\t\t}\n *\t\t}\n *\t\tmodelDispatcher.on( 'selectionAttribute:style', convertSelectionAttribute( styleCreator ) );\n *\n * **Note:** You can use the same `elementCreator` function for this converter factory\n * and {@link module:engine/conversion/model-to-view-converters~wrapRange}\n * model to view converter, as long as the `elementCreator` function uses only the first parameter (attribute value).\n *\n *\t\tmodelDispatcher.on( 'selection', convertCollapsedSelection() );\n *\t\tmodelDispatcher.on( 'selectionAttribute:italic', convertSelectionAttribute( new ViewAttributeElement( 'em' ) ) );\n *\t\tmodelDispatcher.on( 'selectionAttribute:bold', convertSelectionAttribute( new ViewAttributeElement( 'strong' ) ) );\n *\n * Example of view states before and after converting collapsed selection:\n *\n *\t\t   <p><em>f^oo</em>bar</p>\n *\t\t-> <p><em>f</em>^<em>oo</em>bar</p>\n *\t\t-> <p><em>f^oo</em>bar</p>\n *\n * Example of view state after converting collapsed selection. The scenario is: selection is inside bold text (`<strong>` element)\n * but it does not have bold attribute itself and has italic attribute instead (let's assume that user turned off bold and turned\n * on italic with selection collapsed):\n *\n *\t\t   <p><strong>f^oo<strong>bar</p>\n *\t\t-> <p><strong>f</strong>^<strong>oo<strong>bar</p>\n *\t\t-> <p><strong>f</strong><em>^</em><strong>oo</strong>bar</p>\n *\n * In first example, nothing has changed, because first `<em>` element got broken by `convertCollapsedSelection()` converter,\n * but then it got wrapped-back by `convertSelectionAttribute()` converter. In second example, notice how `<strong>` element\n * is broken to prevent putting selection in it, since selection has no `bold` attribute.\n *\n * @param {module:engine/view/attributeelement~AttributeElement|Function} elementCreator View element,\n * or function returning a view element, which will be used for wrapping.\n * @returns {Function} Selection converter.\n */\nfunction convertSelectionAttribute(elementCreator) {\n  return function (evt, data, consumable, conversionApi) {\n    var viewElement = elementCreator instanceof _element2.default ? elementCreator.clone(true) : elementCreator(data.value, data, data.selection, consumable, conversionApi);\n\n    if (!viewElement) {\n      return;\n    }\n\n    var consumableName = 'selectionAttribute:' + data.key;\n\n    wrapCollapsedSelectionPosition(data.selection, conversionApi.viewSelection, viewElement, consumable, consumableName);\n  };\n}\n\n/**\n * Performs similar conversion as {@link ~convertSelectionAttribute}, but depends on a marker name of a marker in which\n * collapsed selection is placed.\n *\n *\t\tmodelDispatcher.on( 'selectionMarker:searchResult', wrapRange( new ViewAttributeElement( 'span', { class: 'searchResult' } ) ) );\n *\n * **Note:** You can use the same `elementCreator` function for this converter factory\n * and {@link module:engine/conversion/model-to-view-converters~wrapRange}.\n *\n * @see module:engine/conversion/model-selection-to-view-converters~convertSelectionAttribute\n * @param {module:engine/view/attributeelement~AttributeElement|Function} elementCreator View element,\n * or function returning a view element, which will be used for wrapping.\n * @returns {Function} Selection converter.\n */\nfunction convertSelectionMarker(elementCreator) {\n  return function (evt, data, consumable, conversionApi) {\n    var viewElement = elementCreator instanceof _element2.default ? elementCreator.clone(true) : elementCreator(data, consumable, conversionApi);\n\n    if (!viewElement) {\n      return;\n    }\n\n    var consumableName = 'selectionMarker:' + data.name;\n\n    wrapCollapsedSelectionPosition(data.selection, conversionApi.viewSelection, viewElement, consumable, consumableName);\n  };\n}\n\n// Helper function for `convertSelectionAttribute` and `convertSelectionMarker`, which perform similar task.\nfunction wrapCollapsedSelectionPosition(modelSelection, viewSelection, viewElement, consumable, consumableName) {\n  if (!modelSelection.isCollapsed) {\n    return;\n  }\n\n  if (!consumable.consume(modelSelection, consumableName)) {\n    return;\n  }\n\n  var viewPosition = viewSelection.getFirstPosition();\n  viewPosition = _writer2.default.wrapPosition(viewPosition, viewElement);\n\n  viewSelection.removeAllRanges();\n  viewSelection.addRange(new _range2.default(viewPosition, viewPosition));\n}\n\n/**\n * Function factory, creates a converter that clears artifacts after the previous\n * {@link module:engine/model/selection~Selection model selection} conversion. It removes all empty\n * {@link module:engine/view/attributeelement~AttributeElement view attribute elements} and merge sibling attributes at all start and end\n * positions of all ranges.\n *\n *\t\t   <p><strong>^</strong></p>\n *\t\t-> <p>^</p>\n *\n *\t\t   <p><strong>foo</strong>^<strong>bar</strong>bar</p>\n *\t\t-> <p><strong>foo^bar<strong>bar</p>\n *\n *\t\t   <p><strong>foo</strong><em>^</em><strong>bar</strong>bar</p>\n *\t\t-> <p><strong>foo^bar<strong>bar</p>\n *\n * This listener should be assigned before any converter for the new selection:\n *\n *\t\tmodelDispatcher.on( 'selection', clearAttributes() );\n *\n * See {@link module:engine/conversion/model-selection-to-view-converters~convertCollapsedSelection}\n * which do the opposite by breaking attributes in the selection position.\n *\n * @returns {Function} Selection converter.\n */\nfunction clearAttributes() {\n  return function (evt, data, consumable, conversionApi) {\n    var _iteratorNormalCompletion2 = true;\n    var _didIteratorError2 = false;\n    var _iteratorError2 = undefined;\n\n    try {\n      for (var _iterator2 = conversionApi.viewSelection.getRanges()[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {\n        var range = _step2.value;\n\n        // Not collapsed selection should not have artifacts.\n        if (range.isCollapsed) {\n          // Position might be in the node removed by the view writer.\n          if (range.end.parent.document) {\n            _writer2.default.mergeAttributes(range.start);\n          }\n        }\n      }\n    } catch (err) {\n      _didIteratorError2 = true;\n      _iteratorError2 = err;\n    } finally {\n      try {\n        if (!_iteratorNormalCompletion2 && _iterator2.return) {\n          _iterator2.return();\n        }\n      } finally {\n        if (_didIteratorError2) {\n          throw _iteratorError2;\n        }\n      }\n    }\n\n    conversionApi.viewSelection.removeAllRanges();\n  };\n}\n\n/**\n * Function factory, creates a converter that clears fake selection marking after the previous\n * {@link module:engine/model/selection~Selection model selection} conversion.\n */\nfunction clearFakeSelection() {\n  return function (evt, data, consumable, conversionApi) {\n    return conversionApi.viewSelection.setFake(false);\n  };\n}\n\n/***/ }),\n/* 160 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module engine/conversion/modelconversiondispatcher\n */\n\nvar _modelconsumable = __webpack_require__(304);\n\nvar _modelconsumable2 = _interopRequireDefault(_modelconsumable);\n\nvar _range = __webpack_require__(3);\n\nvar _range2 = _interopRequireDefault(_range);\n\nvar _position = __webpack_require__(1);\n\nvar _position2 = _interopRequireDefault(_position);\n\nvar _documentfragment = __webpack_require__(67);\n\nvar _documentfragment2 = _interopRequireDefault(_documentfragment);\n\nvar _emittermixin = __webpack_require__(8);\n\nvar _emittermixin2 = _interopRequireDefault(_emittermixin);\n\nvar _mix = __webpack_require__(4);\n\nvar _mix2 = _interopRequireDefault(_mix);\n\nvar _extend = __webpack_require__(53);\n\nvar _extend2 = _interopRequireDefault(_extend);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * `ModelConversionDispatcher` is a central point of {@link module:engine/model/model model} conversion, which is\n * a process of reacting to changes in the model and reflecting them by listeners that listen to those changes.\n * In default application, {@link module:engine/model/model model} is converted to {@link module:engine/view/view view}. This means\n * that changes in the model are reflected by changing the view (i.e. adding view nodes or changing attributes on view elements).\n *\n * During conversion process, `ModelConversionDispatcher` fires data-manipulation events, basing on state of the model and prepares\n * data for those events. It is important to note that the events are connected with \"change actions\" like \"inserting\"\n * or \"removing\" so one might say that we are converting \"changes\". This is in contrary to view to model conversion,\n * where we convert view nodes (the structure, not \"changes\" to the view). Note, that because changes are converted\n * and not the structure itself, there is a need to have a mapping between model and the structure on which changes are\n * reflected. To map elements during model to view conversion use {@link module:engine/conversion/mapper~Mapper}.\n *\n * The main use for this class is to listen to {@link module:engine/model/document~Document#event:change Document change event}, process it\n * and then fire specific events telling what exactly has changed. For those events, `ModelConversionDispatcher`\n * creates {@link module:engine/conversion/modelconsumable~ModelConsumable list of consumable values} that should be handled by event\n * callbacks. Those events are listened to by model-to-view converters which convert changes done in the\n * {@link module:engine/model/model model} to changes in the {@link module:engine/view/view view}. `ModelConversionController` also checks\n * the current state of consumables, so it won't fire events for parts of model that were already consumed. This is\n * especially important in callbacks that consume multiple values. See {@link module:engine/conversion/modelconsumable~ModelConsumable}\n * for an example of such callback.\n *\n * Although the primary usage for this class is the model-to-view conversion, `ModelConversionDispatcher` can be used\n * to build custom data processing pipelines that converts model to anything that is needed. Existing model structure can\n * be used to generate events (listening to {@link module:engine/model/document~Document#event:change Document change event} is not\n * required)\n * and custom callbacks can be added to the events (these does not have to be limited to changes in the view).\n *\n * When providing your own event listeners for `ModelConversionDispatcher` keep in mind that any callback that had\n * {@link module:engine/conversion/modelconsumable~ModelConsumable#consume consumed} a value from consumable (and did some changes, i.e. to\n * the view) should also stop the event. This is because whenever a callback is fired it is assumed that there is something\n * to be consumed. Thanks to that approach, you do not have to test whether there is anything to consume at the beginning\n * of your listener callback.\n *\n * Example of providing a converter for `ModelConversionDispatcher`:\n *\n *\t\t// We will convert inserting \"paragraph\" model element into the model.\n *\t\tmodelDispatcher.on( 'insert:paragraph', ( evt, data, consumable, conversionApi ) => {\n *\t\t\t// Remember to consume the part of consumable.\n *\t\t\tconsumable.consume( data.item, 'insert' );\n *\n *\t\t\t// Translate position in model to position in the view.\n *\t\t\tconst viewPosition = conversionApi.mapper.toViewPosition( data.range.start );\n *\n *\t\t\t// Create a P element (note that this converter is for inserting P elements -> 'insert:paragraph').\n *\t\t\tconst viewElement = new ViewElement( 'p' );\n *\n *\t\t\t// Bind the newly created view element to model element so positions will map accordingly in future.\n *\t\t\tconversionApi.mapper.bindElements( data.item, viewElement );\n *\n *\t\t\t// Add the newly created view element to the view.\n *\t\t\tviewWriter.insert( viewPosition, viewElement );\n *\n *\t\t\t// Remember to stop the event propagation if the data.item was consumed.\n *\t\t\tevt.stop();\n *\t\t} );\n *\n * Callback that \"overrides\" other callback:\n *\n *\t\t// Special converter for `linkHref` attribute added on custom `quote` element. Note, that this\n *\t\t// attribute may be the same as the attribute added by other features (link feature in this case).\n *\t\t// It might be even added by that feature! It makes sense that a part of content that is a quote is linked\n *\t\t// to an external source so it makes sense that link feature works on the custom quote element.\n *\t\t// However, we have to make sure that the attributes added by link feature are correctly converted.\n *\t\t// To block default `linkHref` conversion we have to:\n *\t\t// 1) add this callback with higher priority than link feature callback,\n *\t\t// 2) consume `linkHref` attribute add change.\n *\t\tmodelConversionDispatcher.on( 'addAttribute:linkHref:quote', ( evt, data, consumable, conversionApi ) => {\n *\t\t\tconsumable.consume( data.item, 'addAttribute:linkHref' );\n *\n *\t\t\t// Create a button that will represent the `linkHref` attribute.\n *\t\t\tlet viewSourceBtn = new ViewElement( 'a', {\n *\t\t\t\thref: data.item.getAttribute( 'linkHref' ),\n *\t\t\t\ttitle: 'source'\n *\t\t\t} );\n *\n *\t\t\t// Add a class for the button.\n *\t\t\tviewSourceBtn.addClass( 'source' );\n *\n *\t\t\t// Insert the button using writer API.\n *\t\t\t// If `addAttribute` event is fired by\n *\t\t\t// `module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#convertInsert` it is fired\n *\t\t\t// after `data.item` insert conversion was done. If the event is fired due to attribute insertion coming from\n *\t\t\t// different source, `data.item` already existed. This means we are safe to get `viewQuote` from mapper.\n *\t\t\tconst viewQuote = conversionApi.mapper.toViewElement( data.item );\n *\t\t\tconst position = new ViewPosition( viewQuote, viewQuote.childCount );\n *\t\t\tviewWriter.insert( position, viewSourceBtn );\n *\n *\t\t\tevt.stop();\n *\t\t}, { priority: 'high' } );\n */\nvar ModelConversionDispatcher = function () {\n\t/**\n  * Creates a `ModelConversionDispatcher` that operates using passed API.\n  *\n  * @param {module:engine/model/document~Document} modelDocument Model document instance bound with this dispatcher.\n  * @param {Object} [conversionApi] Interface passed by dispatcher to the events callbacks.\n  */\n\tfunction ModelConversionDispatcher(modelDocument) {\n\t\tvar conversionApi = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n\n\t\t_classCallCheck(this, ModelConversionDispatcher);\n\n\t\t/**\n   * Model document instance bound with this dispatcher.\n   *\n   * @private\n   * @member {module:engine/model/document~Document}\n   */\n\t\tthis._modelDocument = modelDocument;\n\n\t\t/**\n   * Interface passed by dispatcher to the events callbacks.\n   *\n   * @member {Object}\n   */\n\t\tthis.conversionApi = (0, _extend2.default)({ dispatcher: this }, conversionApi);\n\t}\n\n\t/**\n  * Prepares data and fires a proper event.\n  *\n  * The method is crafted to take use of parameters passed in {@link module:engine/model/document~Document#event:change Document change\n  * event}.\n  *\n  * @see module:engine/model/document~Document#event:change\n  * @fires insert\n  * @fires remove\n  * @fires addAttribute\n  * @fires removeAttribute\n  * @fires changeAttribute\n  * @fires addMarker\n  * @param {String} type Change type.\n  * @param {Object} data Additional information about the change.\n  */\n\n\n\t_createClass(ModelConversionDispatcher, [{\n\t\tkey: 'convertChange',\n\t\tvalue: function convertChange(type, data) {\n\t\t\t// Do not convert changes if they happen in graveyard.\n\t\t\t// Graveyard is a special root that has no view / no other representation and changes done in it should not be converted.\n\t\t\tif (type !== 'remove' && data.range && data.range.root.rootName == '$graveyard') {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tif (type == 'remove' && data.sourcePosition.root.rootName == '$graveyard') {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tif (type == 'rename' && data.element.root.rootName == '$graveyard') {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// We can safely dispatch changes.\n\t\t\tif (type == 'insert' || type == 'reinsert') {\n\t\t\t\tthis.convertInsertion(data.range);\n\t\t\t} else if (type == 'move') {\n\t\t\t\tthis.convertMove(data.sourcePosition, data.range);\n\t\t\t} else if (type == 'remove') {\n\t\t\t\tthis.convertRemove(data.sourcePosition, data.range);\n\t\t\t} else if (type == 'addAttribute' || type == 'removeAttribute' || type == 'changeAttribute') {\n\t\t\t\tthis.convertAttribute(type, data.range, data.key, data.oldValue, data.newValue);\n\t\t\t} else if (type == 'rename') {\n\t\t\t\tthis.convertRename(data.element, data.oldName);\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Starts conversion of insertion-change on given `range`.\n   *\n   * Analyzes given range and fires insertion-connected events with data based on that range.\n   *\n   * **Note**: This method will fire separate events for node insertion and attributes insertion. All\n   * attributes that are set on inserted nodes are treated like they were added just after node insertion.\n   *\n   * @fires insert\n   * @fires addAttribute\n   * @fires addMarker\n   * @param {module:engine/model/range~Range} range Inserted range.\n   */\n\n\t}, {\n\t\tkey: 'convertInsertion',\n\t\tvalue: function convertInsertion(range) {\n\t\t\t// Create a list of things that can be consumed, consisting of nodes and their attributes.\n\t\t\tvar consumable = this._createInsertConsumable(range);\n\n\t\t\t// Fire a separate insert event for each node and text fragment contained in the range.\n\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\tvar _didIteratorError = false;\n\t\t\tvar _iteratorError = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator = range[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\tvar value = _step.value;\n\n\t\t\t\t\tvar item = value.item;\n\t\t\t\t\tvar itemRange = _range2.default.createFromPositionAndShift(value.previousPosition, value.length);\n\t\t\t\t\tvar data = {\n\t\t\t\t\t\titem: item,\n\t\t\t\t\t\trange: itemRange\n\t\t\t\t\t};\n\n\t\t\t\t\tthis._testAndFire('insert', data, consumable);\n\n\t\t\t\t\t// Fire a separate addAttribute event for each attribute that was set on inserted items.\n\t\t\t\t\t// This is important because most attributes converters will listen only to add/change/removeAttribute events.\n\t\t\t\t\t// If we would not add this part, attributes on inserted nodes would not be converted.\n\t\t\t\t\tvar _iteratorNormalCompletion3 = true;\n\t\t\t\t\tvar _didIteratorError3 = false;\n\t\t\t\t\tvar _iteratorError3 = undefined;\n\n\t\t\t\t\ttry {\n\t\t\t\t\t\tfor (var _iterator3 = item.getAttributeKeys()[Symbol.iterator](), _step3; !(_iteratorNormalCompletion3 = (_step3 = _iterator3.next()).done); _iteratorNormalCompletion3 = true) {\n\t\t\t\t\t\t\tvar key = _step3.value;\n\n\t\t\t\t\t\t\tdata.attributeKey = key;\n\t\t\t\t\t\t\tdata.attributeOldValue = null;\n\t\t\t\t\t\t\tdata.attributeNewValue = item.getAttribute(key);\n\n\t\t\t\t\t\t\tthis._testAndFire('addAttribute:' + key, data, consumable);\n\t\t\t\t\t\t}\n\t\t\t\t\t} catch (err) {\n\t\t\t\t\t\t_didIteratorError3 = true;\n\t\t\t\t\t\t_iteratorError3 = err;\n\t\t\t\t\t} finally {\n\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\tif (!_iteratorNormalCompletion3 && _iterator3.return) {\n\t\t\t\t\t\t\t\t_iterator3.return();\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} finally {\n\t\t\t\t\t\t\tif (_didIteratorError3) {\n\t\t\t\t\t\t\t\tthrow _iteratorError3;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError = true;\n\t\t\t\t_iteratorError = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tvar _iteratorNormalCompletion2 = true;\n\t\t\tvar _didIteratorError2 = false;\n\t\t\tvar _iteratorError2 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator2 = this._modelDocument.markers[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {\n\t\t\t\t\tvar marker = _step2.value;\n\n\t\t\t\t\tvar markerRange = marker.getRange();\n\n\t\t\t\t\t// Check if inserted content is inserted into a marker.\n\t\t\t\t\tif (markerRange.containsPosition(range.start)) {\n\t\t\t\t\t\tthis.convertMarker('addMarker', marker.name, markerRange.getIntersection(range));\n\t\t\t\t\t}\n\n\t\t\t\t\t// Check if inserted content contains a marker.\n\t\t\t\t\tif (range.containsRange(markerRange) || range.isEqual(markerRange)) {\n\t\t\t\t\t\tthis.convertMarker('addMarker', marker.name, markerRange);\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError2 = true;\n\t\t\t\t_iteratorError2 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion2 && _iterator2.return) {\n\t\t\t\t\t\t_iterator2.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError2) {\n\t\t\t\t\t\tthrow _iteratorError2;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Starts conversion of move-change of given `range`, that was moved from given `sourcePosition`.\n   *\n   * Fires {@link ~#event:remove remove event} and {@link ~#event:insert insert event} based on passed parameters.\n   *\n   * @fires remove\n   * @fires insert\n   * @param {module:engine/model/position~Position} sourcePosition The original position from which the range was moved.\n   * @param {module:engine/model/range~Range} range The range containing the moved content.\n   */\n\n\t}, {\n\t\tkey: 'convertMove',\n\t\tvalue: function convertMove(sourcePosition, range) {\n\t\t\tthis.convertRemove(sourcePosition, range);\n\t\t\tthis.convertInsertion(range);\n\t\t}\n\n\t\t/**\n   * Starts conversion of remove-change of given `range`, that was removed from given `sourcePosition`.\n   *\n   * Fires {@link ~#event:remove remove event} with data based on passed values.\n   *\n   * @fires remove\n   * @param {module:engine/model/position~Position} sourcePosition Position from where the range has been removed.\n   * @param {module:engine/model/range~Range} range Removed range (after remove, in\n   * {@link module:engine/model/document~Document#graveyard graveyard root}).\n   */\n\n\t}, {\n\t\tkey: 'convertRemove',\n\t\tvalue: function convertRemove(sourcePosition, range) {\n\t\t\tvar consumable = this._createConsumableForRange(range, 'remove');\n\n\t\t\tvar _iteratorNormalCompletion4 = true;\n\t\t\tvar _didIteratorError4 = false;\n\t\t\tvar _iteratorError4 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator4 = range.getItems({ shallow: true })[Symbol.iterator](), _step4; !(_iteratorNormalCompletion4 = (_step4 = _iterator4.next()).done); _iteratorNormalCompletion4 = true) {\n\t\t\t\t\tvar item = _step4.value;\n\n\t\t\t\t\tvar data = {\n\t\t\t\t\t\tsourcePosition: sourcePosition,\n\t\t\t\t\t\titem: item\n\t\t\t\t\t};\n\n\t\t\t\t\tthis._testAndFire('remove', data, consumable);\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError4 = true;\n\t\t\t\t_iteratorError4 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion4 && _iterator4.return) {\n\t\t\t\t\t\t_iterator4.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError4) {\n\t\t\t\t\t\tthrow _iteratorError4;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Starts conversion of attribute-change on given `range`.\n   *\n   * Analyzes given attribute change and fires attributes-connected events with data based on passed values.\n   *\n   * @fires addAttribute\n   * @fires removeAttribute\n   * @fires changeAttribute\n   * @param {String} type Change type. Possible values: `addAttribute`, `removeAttribute`, `changeAttribute`.\n   * @param {module:engine/model/range~Range} range Changed range.\n   * @param {String} key Attribute key.\n   * @param {*} oldValue Attribute value before the change or `null` if attribute has not been set.\n   * @param {*} newValue New attribute value or `null` if attribute has been removed.\n   */\n\n\t}, {\n\t\tkey: 'convertAttribute',\n\t\tvalue: function convertAttribute(type, range, key, oldValue, newValue) {\n\t\t\t// Create a list with attributes to consume.\n\t\t\tvar consumable = this._createConsumableForRange(range, type + ':' + key);\n\n\t\t\t// Create a separate attribute event for each node in the range.\n\t\t\tvar _iteratorNormalCompletion5 = true;\n\t\t\tvar _didIteratorError5 = false;\n\t\t\tvar _iteratorError5 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator5 = range[Symbol.iterator](), _step5; !(_iteratorNormalCompletion5 = (_step5 = _iterator5.next()).done); _iteratorNormalCompletion5 = true) {\n\t\t\t\t\tvar value = _step5.value;\n\n\t\t\t\t\tvar item = value.item;\n\t\t\t\t\tvar itemRange = _range2.default.createFromPositionAndShift(value.previousPosition, value.length);\n\t\t\t\t\tvar data = {\n\t\t\t\t\t\titem: item,\n\t\t\t\t\t\trange: itemRange,\n\t\t\t\t\t\tattributeKey: key,\n\t\t\t\t\t\tattributeOldValue: oldValue,\n\t\t\t\t\t\tattributeNewValue: newValue\n\t\t\t\t\t};\n\n\t\t\t\t\tthis._testAndFire(type + ':' + key, data, consumable);\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError5 = true;\n\t\t\t\t_iteratorError5 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion5 && _iterator5.return) {\n\t\t\t\t\t\t_iterator5.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError5) {\n\t\t\t\t\t\tthrow _iteratorError5;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Starts conversion of rename-change of given `element` that had given `oldName`.\n   *\n   * Fires {@link ~#event:remove remove event} and {@link ~#event:insert insert event} based on passed values.\n   *\n   * @fires remove\n   * @fires insert\n   * @param {module:engine/model/element~Element} element Renamed element.\n   * @param {String} oldName Name of the renamed element before it was renamed.\n   */\n\n\t}, {\n\t\tkey: 'convertRename',\n\t\tvalue: function convertRename(element, oldName) {\n\t\t\t// Create fake element that will be used to fire remove event. The fake element will have the old element name.\n\t\t\tvar fakeElement = element.clone(true);\n\t\t\tfakeElement.name = oldName;\n\n\t\t\t// Bind fake element with original view element so the view element will be removed.\n\t\t\tthis.conversionApi.mapper.bindElements(fakeElement, this.conversionApi.mapper.toViewElement(element));\n\n\t\t\t// Create fake document fragment so a range can be created on fake element.\n\t\t\tvar fakeDocumentFragment = new _documentfragment2.default();\n\t\t\tfakeDocumentFragment.appendChildren(fakeElement);\n\n\t\t\tthis.convertRemove(_position2.default.createBefore(element), _range2.default.createOn(fakeElement));\n\t\t\tthis.convertInsertion(_range2.default.createOn(element));\n\t\t}\n\n\t\t/**\n   * Starts selection conversion.\n   *\n   * Fires events for given {@link module:engine/model/selection~Selection selection} to start selection conversion.\n   *\n   * @fires selection\n   * @fires selectionAttribute\n   * @param {module:engine/model/selection~Selection} selection Selection to convert.\n   */\n\n\t}, {\n\t\tkey: 'convertSelection',\n\t\tvalue: function convertSelection(selection) {\n\t\t\tvar markers = Array.from(this._modelDocument.markers.getMarkersAtPosition(selection.getFirstPosition()));\n\t\t\tvar consumable = this._createSelectionConsumable(selection, markers);\n\n\t\t\tthis.fire('selection', { selection: selection }, consumable, this.conversionApi);\n\n\t\t\tvar _iteratorNormalCompletion6 = true;\n\t\t\tvar _didIteratorError6 = false;\n\t\t\tvar _iteratorError6 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator6 = markers[Symbol.iterator](), _step6; !(_iteratorNormalCompletion6 = (_step6 = _iterator6.next()).done); _iteratorNormalCompletion6 = true) {\n\t\t\t\t\tvar marker = _step6.value;\n\n\t\t\t\t\tvar data = {\n\t\t\t\t\t\tselection: selection,\n\t\t\t\t\t\tname: marker.name\n\t\t\t\t\t};\n\n\t\t\t\t\tif (consumable.test(selection, 'selectionMarker:' + marker.name)) {\n\t\t\t\t\t\tthis.fire('selectionMarker:' + marker.name, data, consumable, this.conversionApi);\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError6 = true;\n\t\t\t\t_iteratorError6 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion6 && _iterator6.return) {\n\t\t\t\t\t\t_iterator6.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError6) {\n\t\t\t\t\t\tthrow _iteratorError6;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tvar _iteratorNormalCompletion7 = true;\n\t\t\tvar _didIteratorError7 = false;\n\t\t\tvar _iteratorError7 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator7 = selection.getAttributeKeys()[Symbol.iterator](), _step7; !(_iteratorNormalCompletion7 = (_step7 = _iterator7.next()).done); _iteratorNormalCompletion7 = true) {\n\t\t\t\t\tvar key = _step7.value;\n\n\t\t\t\t\tvar _data = {\n\t\t\t\t\t\tselection: selection,\n\t\t\t\t\t\tkey: key,\n\t\t\t\t\t\tvalue: selection.getAttribute(key)\n\t\t\t\t\t};\n\n\t\t\t\t\t// Do not fire event if the attribute has been consumed.\n\t\t\t\t\tif (consumable.test(selection, 'selectionAttribute:' + _data.key)) {\n\t\t\t\t\t\tthis.fire('selectionAttribute:' + _data.key, _data, consumable, this.conversionApi);\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError7 = true;\n\t\t\t\t_iteratorError7 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion7 && _iterator7.return) {\n\t\t\t\t\t\t_iterator7.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError7) {\n\t\t\t\t\t\tthrow _iteratorError7;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Starts marker-conversion.\n   *\n   * Fires {@link ~#event:addMarker addMarker event} or {@link ~#event:removeMarker removeMarker event} based on\n   * given `type` with data based on passed parameters.\n   *\n   * @fires addMarker\n   * @fires removeMarker\n   * @param {'addMarker'|'removeMarker'} type Change type.\n   * @param {String} name Marker name.\n   * @param {module:engine/model/range~Range} range Marker range.\n   */\n\n\t}, {\n\t\tkey: 'convertMarker',\n\t\tvalue: function convertMarker(type, name, range) {\n\t\t\t// Do not convert if range is in graveyard or not in the document (e.g. in DocumentFragment).\n\t\t\tif (!range.root.document || range.root.rootName == '$graveyard') {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tvar consumable = this._createMarkerConsumable(type, range);\n\t\t\tvar data = { name: name, range: range };\n\n\t\t\tthis.fire(type + ':' + name, data, consumable, this.conversionApi);\n\t\t}\n\n\t\t/**\n   * Creates {@link module:engine/conversion/modelconsumable~ModelConsumable} with values to consume from given range, assuming that\n   * given range has just been inserted to the model.\n   *\n   * @private\n   * @param {module:engine/model/range~Range} range Inserted range.\n   * @returns {module:engine/conversion/modelconsumable~ModelConsumable} Values to consume.\n   */\n\n\t}, {\n\t\tkey: '_createInsertConsumable',\n\t\tvalue: function _createInsertConsumable(range) {\n\t\t\tvar consumable = new _modelconsumable2.default();\n\n\t\t\tvar _iteratorNormalCompletion8 = true;\n\t\t\tvar _didIteratorError8 = false;\n\t\t\tvar _iteratorError8 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator8 = range[Symbol.iterator](), _step8; !(_iteratorNormalCompletion8 = (_step8 = _iterator8.next()).done); _iteratorNormalCompletion8 = true) {\n\t\t\t\t\tvar value = _step8.value;\n\n\t\t\t\t\tvar item = value.item;\n\n\t\t\t\t\tconsumable.add(item, 'insert');\n\n\t\t\t\t\tvar _iteratorNormalCompletion9 = true;\n\t\t\t\t\tvar _didIteratorError9 = false;\n\t\t\t\t\tvar _iteratorError9 = undefined;\n\n\t\t\t\t\ttry {\n\t\t\t\t\t\tfor (var _iterator9 = item.getAttributeKeys()[Symbol.iterator](), _step9; !(_iteratorNormalCompletion9 = (_step9 = _iterator9.next()).done); _iteratorNormalCompletion9 = true) {\n\t\t\t\t\t\t\tvar key = _step9.value;\n\n\t\t\t\t\t\t\tconsumable.add(item, 'addAttribute:' + key);\n\t\t\t\t\t\t}\n\t\t\t\t\t} catch (err) {\n\t\t\t\t\t\t_didIteratorError9 = true;\n\t\t\t\t\t\t_iteratorError9 = err;\n\t\t\t\t\t} finally {\n\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\tif (!_iteratorNormalCompletion9 && _iterator9.return) {\n\t\t\t\t\t\t\t\t_iterator9.return();\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} finally {\n\t\t\t\t\t\t\tif (_didIteratorError9) {\n\t\t\t\t\t\t\t\tthrow _iteratorError9;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError8 = true;\n\t\t\t\t_iteratorError8 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion8 && _iterator8.return) {\n\t\t\t\t\t\t_iterator8.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError8) {\n\t\t\t\t\t\tthrow _iteratorError8;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn consumable;\n\t\t}\n\n\t\t/**\n   * Creates {@link module:engine/conversion/modelconsumable~ModelConsumable} with values of given `type`\n   * for each item from given `range`.\n   *\n   * @private\n   * @param {module:engine/model/range~Range} range Affected range.\n   * @param {String} type Consumable type.\n   * @returns {module:engine/conversion/modelconsumable~ModelConsumable} Values to consume.\n   */\n\n\t}, {\n\t\tkey: '_createConsumableForRange',\n\t\tvalue: function _createConsumableForRange(range, type) {\n\t\t\tvar consumable = new _modelconsumable2.default();\n\n\t\t\tvar _iteratorNormalCompletion10 = true;\n\t\t\tvar _didIteratorError10 = false;\n\t\t\tvar _iteratorError10 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator10 = range.getItems()[Symbol.iterator](), _step10; !(_iteratorNormalCompletion10 = (_step10 = _iterator10.next()).done); _iteratorNormalCompletion10 = true) {\n\t\t\t\t\tvar item = _step10.value;\n\n\t\t\t\t\tconsumable.add(item, type);\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError10 = true;\n\t\t\t\t_iteratorError10 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion10 && _iterator10.return) {\n\t\t\t\t\t\t_iterator10.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError10) {\n\t\t\t\t\t\tthrow _iteratorError10;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn consumable;\n\t\t}\n\n\t\t/**\n   * Creates {@link module:engine/conversion/modelconsumable~ModelConsumable} with selection consumable values.\n   *\n   * @private\n   * @param {module:engine/model/selection~Selection} selection Selection to create consumable from.\n   * @param {Iterable.<module:engine/model/markercollection~Marker>} markers Markers which contains selection.\n   * @returns {module:engine/conversion/modelconsumable~ModelConsumable} Values to consume.\n   */\n\n\t}, {\n\t\tkey: '_createSelectionConsumable',\n\t\tvalue: function _createSelectionConsumable(selection, markers) {\n\t\t\tvar consumable = new _modelconsumable2.default();\n\n\t\t\tconsumable.add(selection, 'selection');\n\n\t\t\tvar _iteratorNormalCompletion11 = true;\n\t\t\tvar _didIteratorError11 = false;\n\t\t\tvar _iteratorError11 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator11 = markers[Symbol.iterator](), _step11; !(_iteratorNormalCompletion11 = (_step11 = _iterator11.next()).done); _iteratorNormalCompletion11 = true) {\n\t\t\t\t\tvar marker = _step11.value;\n\n\t\t\t\t\tconsumable.add(selection, 'selectionMarker:' + marker.name);\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError11 = true;\n\t\t\t\t_iteratorError11 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion11 && _iterator11.return) {\n\t\t\t\t\t\t_iterator11.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError11) {\n\t\t\t\t\t\tthrow _iteratorError11;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tvar _iteratorNormalCompletion12 = true;\n\t\t\tvar _didIteratorError12 = false;\n\t\t\tvar _iteratorError12 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator12 = selection.getAttributeKeys()[Symbol.iterator](), _step12; !(_iteratorNormalCompletion12 = (_step12 = _iterator12.next()).done); _iteratorNormalCompletion12 = true) {\n\t\t\t\t\tvar key = _step12.value;\n\n\t\t\t\t\tconsumable.add(selection, 'selectionAttribute:' + key);\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError12 = true;\n\t\t\t\t_iteratorError12 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion12 && _iterator12.return) {\n\t\t\t\t\t\t_iterator12.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError12) {\n\t\t\t\t\t\tthrow _iteratorError12;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn consumable;\n\t\t}\n\n\t\t/**\n   * Creates {@link module:engine/conversion/modelconsumable~ModelConsumable} for adding or removing marker on given `range`.\n   *\n   * @private\n   * @param {'addMarker'|'removeMarker'} type Change type.\n   * @param {module:engine/model/range~Range} range Range on which marker was added or removed.\n   * @returns {module:engine/conversion/modelconsumable~ModelConsumable} Values to consume.\n   */\n\n\t}, {\n\t\tkey: '_createMarkerConsumable',\n\t\tvalue: function _createMarkerConsumable(type, range) {\n\t\t\tvar consumable = new _modelconsumable2.default();\n\n\t\t\tconsumable.add(range, type);\n\n\t\t\treturn consumable;\n\t\t}\n\n\t\t/**\n   * Tests passed `consumable` to check whether given event can be fired and if so, fires it.\n   *\n   * @private\n   * @fires insert\n   * @fires remove\n   * @fires addAttribute\n   * @fires removeAttribute\n   * @fires changeAttribute\n   * @param {String} type Event type.\n   * @param {Object} data Event data.\n   * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n   */\n\n\t}, {\n\t\tkey: '_testAndFire',\n\t\tvalue: function _testAndFire(type, data, consumable) {\n\t\t\tif (!consumable.test(data.item, type)) {\n\t\t\t\t// Do not fire event if the item was consumed.\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tvar name = data.item.name || '$text';\n\n\t\t\tthis.fire(type + ':' + name, data, consumable, this.conversionApi);\n\t\t}\n\n\t\t/**\n   * Fired for inserted nodes.\n   *\n   * `insert` is a namespace for a class of events. Names of actually called events follow this pattern:\n   * `insert:<name>`. `name` is either `'$text'` when one or more characters has been inserted or\n   * {@link module:engine/model/element~Element#name name} of inserted element.\n   *\n   * This way listeners can either listen to a general `insert` event or specific event (for example `insert:paragraph`).\n   *\n   * @event insert\n   * @param {Object} data Additional information about the change.\n   * @param {module:engine/model/item~Item} data.item Inserted item.\n   * @param {module:engine/model/range~Range} data.range Range spanning over inserted item.\n   * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n   * @param {Object} conversionApi Conversion interface to be used by callback, passed in `ModelConversionDispatcher` constructor.\n   */\n\n\t\t/**\n   * Fired for removed nodes.\n   *\n   * `remove` is a namespace for a class of events. Names of actually called events follow this pattern:\n   * `remove:<name>`. `name` is either `'$text'` when one or more characters has been removed or the\n   * {@link module:engine/model/element~Element#name name} of removed element.\n   *\n   * This way listeners can either listen to a general `remove` event or specific event (for example `remove:paragraph`).\n   *\n   * @event remove\n   * @param {Object} data Additional information about the change.\n   * @param {module:engine/model/position~Position} data.sourcePosition Position from where the range has been removed.\n   * @param {module:engine/model/range~Range} data.range Removed range (in {@link module:engine/model/document~Document#graveyard\n   * graveyard root}).\n   * @param {Object} conversionApi Conversion interface to be used by callback, passed in `ModelConversionDispatcher` constructor.\n   */\n\n\t\t/**\n   * Fired when attribute has been added on a node.\n   *\n   * `addAttribute` is a namespace for a class of events. Names of actually called events follow this pattern:\n   * `addAttribute:<attributeKey>:<name>`. `attributeKey` is the key of added attribute. `name` is either `'$text'`\n   * if attribute was added on one or more characters, or the {@link module:engine/model/element~Element#name name} of\n   * the element on which attribute was added.\n   *\n   * This way listeners can either listen to a general `addAttribute:bold` event or specific event\n   * (for example `addAttribute:link:image`).\n   *\n   * @event addAttribute\n   * @param {Object} data Additional information about the change.\n   * @param {module:engine/model/item~Item} data.item Changed item.\n   * @param {module:engine/model/range~Range} data.range Range spanning over changed item.\n   * @param {String} data.attributeKey Attribute key.\n   * @param {null} data.attributeOldValue Attribute value before the change - always `null`. Kept for the sake of unifying events.\n   * @param {*} data.attributeNewValue New attribute value.\n   * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n   * @param {Object} conversionApi Conversion interface to be used by callback, passed in `ModelConversionDispatcher` constructor.\n   */\n\n\t\t/**\n   * Fired when attribute has been removed from a node.\n   *\n   * `removeAttribute` is a namespace for a class of events. Names of actually called events follow this pattern:\n   * `removeAttribute:<attributeKey>:<name>`. `attributeKey` is the key of removed attribute. `name` is either `'$text'`\n   * if attribute was removed from one or more characters, or the {@link module:engine/model/element~Element#name name} of\n   * the element from which attribute was removed.\n   *\n   * This way listeners can either listen to a general `removeAttribute:bold` event or specific event\n   * (for example `removeAttribute:link:image`).\n   *\n   * @event removeAttribute\n   * @param {Object} data Additional information about the change.\n   * @param {module:engine/model/item~Item} data.item Changed item.\n   * @param {module:engine/model/range~Range} data.range Range spanning over changed item.\n   * @param {String} data.attributeKey Attribute key.\n   * @param {*} data.attributeOldValue Attribute value before it was removed.\n   * @param {null} data.attributeNewValue New attribute value - always `null`. Kept for the sake of unifying events.\n   * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n   * @param {Object} conversionApi Conversion interface to be used by callback, passed in `ModelConversionDispatcher` constructor.\n   */\n\n\t\t/**\n   * Fired when attribute of a node has been changed.\n   *\n   * `changeAttribute` is a namespace for a class of events. Names of actually called events follow this pattern:\n   * `changeAttribute:<attributeKey>:<name>`. `attributeKey` is the key of changed attribute. `name` is either `'$text'`\n   * if attribute was changed on one or more characters, or the {@link module:engine/model/element~Element#name name} of\n   * the element on which attribute was changed.\n   *\n   * This way listeners can either listen to a general `changeAttribute:link` event or specific event\n   * (for example `changeAttribute:link:image`).\n   *\n   * @event changeAttribute\n   * @param {Object} data Additional information about the change.\n   * @param {module:engine/model/item~Item} data.item Changed item.\n   * @param {module:engine/model/range~Range} data.range Range spanning over changed item.\n   * @param {String} data.attributeKey Attribute key.\n   * @param {*} data.attributeOldValue Attribute value before the change.\n   * @param {*} data.attributeNewValue New attribute value.\n   * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n   * @param {Object} conversionApi Conversion interface to be used by callback, passed in `ModelConversionDispatcher` constructor.\n   */\n\n\t\t/**\n   * Fired for {@link module:engine/model/selection~Selection selection} changes.\n   *\n   * @event selection\n   * @param {module:engine/model/selection~Selection} selection `Selection` instance that is converted.\n   * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n   * @param {Object} conversionApi Conversion interface to be used by callback, passed in `ModelConversionDispatcher` constructor.\n   */\n\n\t\t/**\n   * Fired for {@link module:engine/model/selection~Selection selection} attributes changes.\n   *\n   * `selectionAttribute` is a namespace for a class of events. Names of actually called events follow this pattern:\n   * `selectionAttribute:<attributeKey>`. `attributeKey` is the key of selection attribute. This way listen can listen to\n   * certain attribute, i.e. `addAttribute:bold`.\n   *\n   * @event selectionAttribute\n   * @param {Object} data Additional information about the change.\n   * @param {module:engine/model/selection~Selection} data.selection Selection that is converted.\n   * @param {String} data.attributeKey Key of changed attribute.\n   * @param {*} data.attributeValue Value of changed attribute.\n   * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n   * @param {Object} conversionApi Conversion interface to be used by callback, passed in `ModelConversionDispatcher` constructor.\n   */\n\n\t\t/**\n   * Fired when a new marker is added to the model.\n   *\n   * `addMarker` is a namespace for a class of events. Names of actually called events follow this pattern:\n   * `addMarker:<markerName>`. By specifying certain marker names, you can make the events even more gradual. For example,\n   * markers can be named `foo:abc`, `foo:bar`, then it is possible to listen to `addMarker:foo` or `addMarker:foo:abc` and\n   * `addMarker:foo:bar` events.\n   *\n   * @event addMarker\n   * @param {Object} data Additional information about the change.\n   * @param {String} data.name Marker name.\n   * @param {module:engine/model/range~Range} data.range Marker range.\n   * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n   * @param {Object} conversionApi Conversion interface to be used by callback, passed in `ModelConversionDispatcher` constructor.\n   */\n\n\t\t/**\n   * Fired when marker is removed from the model.\n   *\n   * `removeMarker` is a namespace for a class of events. Names of actually called events follow this pattern:\n   * `removeMarker:<markerName>`. By specifying certain marker names, you can make the events even more gradual. For example,\n   * markers can be named `foo:abc`, `foo:bar`, then it is possible to listen to `removeMarker:foo` or `removeMarker:foo:abc` and\n   * `removeMarker:foo:bar` events.\n   *\n   * @event removeMarker\n   * @param {Object} data Additional information about the change.\n   * @param {String} data.name Marker name.\n   * @param {module:engine/model/range~Range} data.range Marker range.\n   * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n   * @param {Object} conversionApi Conversion interface to be used by callback, passed in `ModelConversionDispatcher` constructor.\n   */\n\n\t}]);\n\n\treturn ModelConversionDispatcher;\n}();\n\nexports.default = ModelConversionDispatcher;\n\n\n(0, _mix2.default)(ModelConversionDispatcher, _emittermixin2.default);\n\n/***/ }),\n/* 161 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module engine/dataprocessor/htmldataprocessor\n */\n\n/* globals document, DOMParser */\n\nvar _basichtmlwriter = __webpack_require__(309);\n\nvar _basichtmlwriter2 = _interopRequireDefault(_basichtmlwriter);\n\nvar _domconverter = __webpack_require__(167);\n\nvar _domconverter2 = _interopRequireDefault(_domconverter);\n\nvar _filler = __webpack_require__(57);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * HtmlDataProcessor class.\n * This data processor implementation uses HTML as input/output data.\n *\n * @implements module:engine/dataprocessor/dataprocessor~DataProcessor\n */\nvar HtmlDataProcessor = function () {\n\t/**\n  * Creates a new instance of the HtmlDataProcessor class.\n  */\n\tfunction HtmlDataProcessor() {\n\t\t_classCallCheck(this, HtmlDataProcessor);\n\n\t\t/**\n   * DOMParser instance used to parse HTML string to HTMLDocument.\n   *\n   * @private\n   * @member {DOMParser}\n   */\n\t\tthis._domParser = new DOMParser();\n\n\t\t/**\n   * DOM converter used to convert DOM elements to view elements.\n   *\n   * @private\n   * @member\n   */\n\t\tthis._domConverter = new _domconverter2.default({ blockFiller: _filler.NBSP_FILLER });\n\n\t\t/**\n   * BasicHtmlWriter instance used to convert DOM elements to HTML string.\n   *\n   * @private\n   * @member {module:engine/dataprocessor/basichtmlwriter~BasicHtmlWriter}\n   */\n\t\tthis._htmlWriter = new _basichtmlwriter2.default();\n\t}\n\n\t/**\n  * Converts provided {@link module:engine/view/documentfragment~DocumentFragment DocumentFragment}\n  * to data format - in this case HTML string.\n  *\n  * @param {module:engine/view/documentfragment~DocumentFragment} viewFragment\n  * @returns {String} HTML string.\n  */\n\n\n\t_createClass(HtmlDataProcessor, [{\n\t\tkey: 'toData',\n\t\tvalue: function toData(viewFragment) {\n\t\t\t// Convert view DocumentFragment to DOM DocumentFragment.\n\t\t\tvar domFragment = this._domConverter.viewToDom(viewFragment, document);\n\n\t\t\t// Convert DOM DocumentFragment to HTML output.\n\t\t\treturn this._htmlWriter.getHtml(domFragment);\n\t\t}\n\n\t\t/**\n   * Converts provided HTML string to view tree.\n   *\n   * @param {String} data HTML string.\n   * @returns {module:engine/view/node~Node|module:engine/view/documentfragment~DocumentFragment|null} Converted view element.\n   */\n\n\t}, {\n\t\tkey: 'toView',\n\t\tvalue: function toView(data) {\n\t\t\t// Convert input HTML data to DOM DocumentFragment.\n\t\t\tvar domFragment = this._toDom(data);\n\n\t\t\t// Convert DOM DocumentFragment to view DocumentFragment.\n\t\t\treturn this._domConverter.domToView(domFragment);\n\t\t}\n\n\t\t/**\n   * Converts HTML String to its DOM representation. Returns DocumentFragment, containing nodes parsed from\n   * provided data.\n   *\n   * @private\n   * @param {String} data\n   * @returns {DocumentFragment}\n   */\n\n\t}, {\n\t\tkey: '_toDom',\n\t\tvalue: function _toDom(data) {\n\t\t\tvar document = this._domParser.parseFromString(data, 'text/html');\n\t\t\tvar fragment = document.createDocumentFragment();\n\t\t\tvar nodes = document.body.childNodes;\n\n\t\t\twhile (nodes.length > 0) {\n\t\t\t\tfragment.appendChild(nodes[0]);\n\t\t\t}\n\n\t\t\treturn fragment;\n\t\t}\n\t}]);\n\n\treturn HtmlDataProcessor;\n}();\n\nexports.default = HtmlDataProcessor;\n\n/***/ }),\n/* 162 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\nexports.RootAttributeDelta = undefined;\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _delta = __webpack_require__(19);\n\nvar _delta2 = _interopRequireDefault(_delta);\n\nvar _deltafactory = __webpack_require__(17);\n\nvar _deltafactory2 = _interopRequireDefault(_deltafactory);\n\nvar _batch = __webpack_require__(16);\n\nvar _attributeoperation = __webpack_require__(70);\n\nvar _attributeoperation2 = _interopRequireDefault(_attributeoperation);\n\nvar _rootattributeoperation = __webpack_require__(114);\n\nvar _rootattributeoperation2 = _interopRequireDefault(_rootattributeoperation);\n\nvar _position = __webpack_require__(1);\n\nvar _position2 = _interopRequireDefault(_position);\n\nvar _range = __webpack_require__(3);\n\nvar _range2 = _interopRequireDefault(_range);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module engine/model/delta/attributedelta\n */\n\n/**\n * To provide specific OT behavior and better collisions solving, methods to change attributes\n * ({@link module:engine/model/batch~Batch#setAttribute} and {@link module:engine/model/batch~Batch#removeAttribute})\n * use `AttributeDelta` class which inherits from the `Delta` class and may overwrite some methods.\n * @extends module:engine/model/delta/delta~Delta\n */\nvar AttributeDelta = function (_Delta) {\n\t_inherits(AttributeDelta, _Delta);\n\n\tfunction AttributeDelta() {\n\t\t_classCallCheck(this, AttributeDelta);\n\n\t\treturn _possibleConstructorReturn(this, (AttributeDelta.__proto__ || Object.getPrototypeOf(AttributeDelta)).apply(this, arguments));\n\t}\n\n\t_createClass(AttributeDelta, [{\n\t\tkey: 'type',\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tget: function get() {\n\t\t\treturn 'attribute';\n\t\t}\n\n\t\t/**\n   * The attribute key that is changed by the delta or `null` if the delta has no operations.\n   *\n   * @readonly\n   * @type {String|null}\n   */\n\n\t}, {\n\t\tkey: 'key',\n\t\tget: function get() {\n\t\t\treturn this.operations[0] ? this.operations[0].key : null;\n\t\t}\n\n\t\t/**\n   * The attribute value that is set by the delta or `null` if the delta has no operations.\n   *\n   * @readonly\n   * @type {*|null}\n   */\n\n\t}, {\n\t\tkey: 'value',\n\t\tget: function get() {\n\t\t\treturn this.operations[0] ? this.operations[0].newValue : null;\n\t\t}\n\n\t\t/**\n   * The range on which delta operates or `null` if the delta has no operations.\n   *\n   * @readonly\n   * @type {module:engine/model/range~Range|null}\n   */\n\n\t}, {\n\t\tkey: 'range',\n\t\tget: function get() {\n\t\t\t// Check if it is cached.\n\t\t\tif (this._range) {\n\t\t\t\treturn this._range;\n\t\t\t}\n\n\t\t\tvar start = null;\n\t\t\tvar end = null;\n\n\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\tvar _didIteratorError = false;\n\t\t\tvar _iteratorError = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator = this.operations[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\tvar operation = _step.value;\n\n\t\t\t\t\tif (start === null || start.isAfter(operation.range.start)) {\n\t\t\t\t\t\tstart = operation.range.start;\n\t\t\t\t\t}\n\n\t\t\t\t\tif (end === null || end.isBefore(operation.range.end)) {\n\t\t\t\t\t\tend = operation.range.end;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError = true;\n\t\t\t\t_iteratorError = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tif (start && end) {\n\t\t\t\tthis._range = new _range2.default(start, end);\n\n\t\t\t\treturn this._range;\n\t\t\t}\n\n\t\t\treturn null;\n\t\t}\n\t}, {\n\t\tkey: '_reverseDeltaClass',\n\t\tget: function get() {\n\t\t\treturn AttributeDelta;\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}], [{\n\t\tkey: 'className',\n\t\tget: function get() {\n\t\t\treturn 'engine.model.delta.AttributeDelta';\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: '_priority',\n\t\tget: function get() {\n\t\t\treturn 20;\n\t\t}\n\t}]);\n\n\treturn AttributeDelta;\n}(_delta2.default);\n\n/**\n * To provide specific OT behavior and better collisions solving, methods to change attributes\n * ({@link module:engine/model/batch~Batch#setAttribute} and {@link module:engine/model/batch~Batch#removeAttribute})\n * use `RootAttributeDelta` class which inherits from the `Delta` class and may\n * overwrite some methods.\n *\n * @extends module:engine/model/delta/delta~Delta\n */\n\n\nexports.default = AttributeDelta;\n\nvar RootAttributeDelta = exports.RootAttributeDelta = function (_Delta2) {\n\t_inherits(RootAttributeDelta, _Delta2);\n\n\tfunction RootAttributeDelta() {\n\t\t_classCallCheck(this, RootAttributeDelta);\n\n\t\treturn _possibleConstructorReturn(this, (RootAttributeDelta.__proto__ || Object.getPrototypeOf(RootAttributeDelta)).apply(this, arguments));\n\t}\n\n\t_createClass(RootAttributeDelta, null, [{\n\t\tkey: 'className',\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tget: function get() {\n\t\t\treturn 'engine.model.delta.RootAttributeDelta';\n\t\t}\n\t}]);\n\n\treturn RootAttributeDelta;\n}(_delta2.default);\n\n/**\n * Sets value of the attribute with given key on a {@link module:engine/model/item~Item model item}\n * or on a {@link module:engine/model/range~Range range}.\n *\n * @chainable\n * @method module:engine/model/batch~Batch#setAttribute\n * @param {module:engine/model/item~Item|module:engine/model/range~Range} itemOrRange\n * Model item or range on which the attribute will be set.\n * @param {String} key Attribute key.\n * @param {*} value Attribute new value.\n */\n\n\n(0, _batch.register)('setAttribute', function (itemOrRange, key, value) {\n\tattribute(this, key, value, itemOrRange);\n\n\treturn this;\n});\n\n/**\n * Removes an attribute with given key from a {@link module:engine/model/item~Item model item}\n * or from a {@link module:engine/model/range~Range range}.\n *\n * @chainable\n * @param {module:engine/model/item~Item|module:engine/model/range~Range} itemOrRange\n * Model item or range from which the attribute will be removed.\n * @method module:engine/model/batch~Batch#removeAttribute\n * @param {String} key Attribute key.\n */\n(0, _batch.register)('removeAttribute', function (itemOrRange, key) {\n\tattribute(this, key, null, itemOrRange);\n\n\treturn this;\n});\n\nfunction attribute(batch, key, value, itemOrRange) {\n\tif (itemOrRange instanceof _range2.default) {\n\t\tchangeRange(batch, batch.document, key, value, itemOrRange);\n\t} else {\n\t\tchangeItem(batch, batch.document, key, value, itemOrRange);\n\t}\n}\n\nfunction changeItem(batch, doc, key, value, item) {\n\tvar previousValue = item.getAttribute(key);\n\tvar range = void 0,\n\t    operation = void 0;\n\n\tvar delta = item.is('rootElement') ? new RootAttributeDelta() : new AttributeDelta();\n\tbatch.addDelta(delta);\n\n\tif (previousValue != value) {\n\t\tif (item.is('rootElement')) {\n\t\t\t// If we change attributes of root element, we have to use `RootAttributeOperation`.\n\t\t\toperation = new _rootattributeoperation2.default(item, key, previousValue, value, doc.version);\n\t\t} else {\n\t\t\tif (item.is('element')) {\n\t\t\t\t// If we change the attribute of the element, we do not want to change attributes of its children, so\n\t\t\t\t// the end of the range cannot be after the closing tag, it should be inside that element, before any of\n\t\t\t\t// it's children, so the range will contain only the opening tag.\n\t\t\t\trange = new _range2.default(_position2.default.createBefore(item), _position2.default.createFromParentAndOffset(item, 0));\n\t\t\t} else {\n\t\t\t\t// If `item` is text proxy, we create a range from the beginning to the end of that text proxy, to change\n\t\t\t\t// all characters represented by it.\n\t\t\t\trange = new _range2.default(_position2.default.createBefore(item), _position2.default.createAfter(item));\n\t\t\t}\n\n\t\t\toperation = new _attributeoperation2.default(range, key, previousValue, value, doc.version);\n\t\t}\n\n\t\tdelta.addOperation(operation);\n\t\tdoc.applyOperation(operation);\n\t}\n}\n\n// Because attribute operation needs to have the same attribute value on the whole range, this function splits the range\n// into smaller parts.\nfunction changeRange(batch, doc, attributeKey, attributeValue, range) {\n\tvar delta = new AttributeDelta();\n\tbatch.addDelta(delta);\n\n\t// Position of the last split, the beginning of the new range.\n\tvar lastSplitPosition = range.start;\n\n\t// Currently position in the scanning range. Because we need value after the position, it is not a current\n\t// position of the iterator but the previous one (we need to iterate one more time to get the value after).\n\tvar position = void 0;\n\t// Value before the currently position.\n\tvar attributeValueBefore = void 0;\n\t// Value after the currently position.\n\tvar attributeValueAfter = void 0;\n\n\tvar _iteratorNormalCompletion2 = true;\n\tvar _didIteratorError2 = false;\n\tvar _iteratorError2 = undefined;\n\n\ttry {\n\t\tfor (var _iterator2 = range[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {\n\t\t\tvar value = _step2.value;\n\n\t\t\tattributeValueAfter = value.item.getAttribute(attributeKey);\n\n\t\t\t// At the first run of the iterator the position in undefined. We also do not have a attributeValueBefore, but\n\t\t\t// because attributeValueAfter may be null, attributeValueBefore may be equal attributeValueAfter ( undefined == null ).\n\t\t\tif (position && attributeValueBefore != attributeValueAfter) {\n\t\t\t\t// if attributeValueBefore == attributeValue there is nothing to change, so we add operation only if these values are different.\n\t\t\t\tif (attributeValueBefore != attributeValue) {\n\t\t\t\t\taddOperation();\n\t\t\t\t}\n\n\t\t\t\tlastSplitPosition = position;\n\t\t\t}\n\n\t\t\tposition = value.nextPosition;\n\t\t\tattributeValueBefore = attributeValueAfter;\n\t\t}\n\n\t\t// Because position in the loop is not the iterator position (see let position comment), the last position in\n\t\t// the while loop will be last but one position in the range. We need to check the last position manually.\n\t} catch (err) {\n\t\t_didIteratorError2 = true;\n\t\t_iteratorError2 = err;\n\t} finally {\n\t\ttry {\n\t\t\tif (!_iteratorNormalCompletion2 && _iterator2.return) {\n\t\t\t\t_iterator2.return();\n\t\t\t}\n\t\t} finally {\n\t\t\tif (_didIteratorError2) {\n\t\t\t\tthrow _iteratorError2;\n\t\t\t}\n\t\t}\n\t}\n\n\tif (position instanceof _position2.default && position != lastSplitPosition && attributeValueBefore != attributeValue) {\n\t\taddOperation();\n\t}\n\n\tfunction addOperation() {\n\t\tvar range = new _range2.default(lastSplitPosition, position);\n\t\tvar operation = new _attributeoperation2.default(range, attributeKey, attributeValueBefore, attributeValue, doc.version);\n\n\t\tdelta.addOperation(operation);\n\t\tdoc.applyOperation(operation);\n\t}\n}\n\n_deltafactory2.default.register(AttributeDelta);\n_deltafactory2.default.register(RootAttributeDelta);\n\n/***/ }),\n/* 163 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _delta = __webpack_require__(19);\n\nvar _delta2 = _interopRequireDefault(_delta);\n\nvar _deltafactory = __webpack_require__(17);\n\nvar _deltafactory2 = _interopRequireDefault(_deltafactory);\n\nvar _batch = __webpack_require__(16);\n\nvar _renameoperation = __webpack_require__(113);\n\nvar _renameoperation2 = _interopRequireDefault(_renameoperation);\n\nvar _element = __webpack_require__(5);\n\nvar _element2 = _interopRequireDefault(_element);\n\nvar _position = __webpack_require__(1);\n\nvar _position2 = _interopRequireDefault(_position);\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module engine/model/delta/renamedelta\n */\n\n/**\n * To provide specific OT behavior and better collisions solving, the {@link module:engine/model/batch~Batch#rename Batch#rename} method\n * uses the `RenameDelta` class which inherits from the `Delta` class and may overwrite some methods.\n */\nvar RenameDelta = function (_Delta) {\n\t_inherits(RenameDelta, _Delta);\n\n\tfunction RenameDelta() {\n\t\t_classCallCheck(this, RenameDelta);\n\n\t\treturn _possibleConstructorReturn(this, (RenameDelta.__proto__ || Object.getPrototypeOf(RenameDelta)).apply(this, arguments));\n\t}\n\n\t_createClass(RenameDelta, [{\n\t\tkey: 'type',\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tget: function get() {\n\t\t\treturn 'rename';\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: '_reverseDeltaClass',\n\t\tget: function get() {\n\t\t\treturn RenameDelta;\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}], [{\n\t\tkey: 'className',\n\t\tget: function get() {\n\t\t\treturn 'engine.model.delta.RenameDelta';\n\t\t}\n\t}]);\n\n\treturn RenameDelta;\n}(_delta2.default);\n\nexports.default = RenameDelta;\n\n\nfunction apply(batch, delta, operation) {\n\tdelta.addOperation(operation);\n\tbatch.document.applyOperation(operation);\n}\n\n/**\n * Renames given element.\n *\n * @chainable\n * @method module:engine/model/batch~Batch#rename\n * @param {module:engine/model/element~Element} element The element to rename.\n * @param {String} newName New element name.\n */\n(0, _batch.register)('rename', function (element, newName) {\n\tif (!(element instanceof _element2.default)) {\n\t\t/**\n   * Trying to rename an object which is not an instance of Element.\n   *\n   * @error batch-rename-not-element-instance\n   */\n\t\tthrow new _ckeditorerror2.default('batch-rename-not-element-instance: Trying to rename an object which is not an instance of Element.');\n\t}\n\n\tvar delta = new RenameDelta();\n\tthis.addDelta(delta);\n\n\tapply(this, delta, new _renameoperation2.default(_position2.default.createBefore(element), element.name, newName, this.document.version));\n\n\treturn this;\n});\n\n_deltafactory2.default.register(RenameDelta);\n\n/***/ }),\n/* 164 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _insertdelta = __webpack_require__(102);\n\nvar _insertdelta2 = _interopRequireDefault(_insertdelta);\n\nvar _batch = __webpack_require__(16);\n\nvar _deltafactory = __webpack_require__(17);\n\nvar _deltafactory2 = _interopRequireDefault(_deltafactory);\n\nvar _insertoperation = __webpack_require__(36);\n\nvar _insertoperation2 = _interopRequireDefault(_insertoperation);\n\nvar _writer = __webpack_require__(28);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module engine/model/delta/weakinsertdelta\n */\n\n/**\n * @classdesc\n * To provide specific OT behavior and better collisions solving, the {@link module:engine/model/batch~Batch#insert} method\n * uses the `WeakInsertDelta` class which inherits from the `Delta` class and may overwrite some methods.\n */\nvar WeakInsertDelta = function (_InsertDelta) {\n  _inherits(WeakInsertDelta, _InsertDelta);\n\n  function WeakInsertDelta() {\n    _classCallCheck(this, WeakInsertDelta);\n\n    return _possibleConstructorReturn(this, (WeakInsertDelta.__proto__ || Object.getPrototypeOf(WeakInsertDelta)).apply(this, arguments));\n  }\n\n  _createClass(WeakInsertDelta, null, [{\n    key: 'className',\n\n    /**\n     * @inheritDoc\n     */\n    get: function get() {\n      return 'engine.model.delta.WeakInsertDelta';\n    }\n  }]);\n\n  return WeakInsertDelta;\n}(_insertdelta2.default);\n\n/**\n * Inserts a node or nodes at given position. {@link module:engine/model/batch~Batch#weakInsert weakInsert} is commonly used for actions\n * like typing or plain-text paste (without formatting). There are two differences between\n * {@link module:engine/model/batch~Batch#insert insert} and {@link module:engine/model/batch~Batch#weakInsert weakInsert}:\n *\n * * When using `weakInsert`, inserted nodes will have same attributes as the current attributes of\n * {@link module:engine/model/document~Document#selection document selection}.\n * * If {@link module:engine/model/operation/insertoperation~InsertOperation insert operation} position is inside a range changed by\n * {@link module:engine/model/operation/attributeoperation~AttributeOperation attribute operation},\n * the attribute operation is split into two operations.\n * Thanks to this, attribute change \"omits\" the inserted nodes. The correct behavior for `WeakInsertDelta` is that\n * {@link module:engine/model/operation/attributeoperation~AttributeOperation AttributeOperation} does not \"break\" and also\n * applies attributes for inserted nodes. This behavior has to be reflected during\n * {@link module:engine/model/delta/transform~transform delta transformation}.\n *\n * @chainable\n * @method module:engine/model/batch~Batch#weakInsert\n * @param {module:engine/model/position~Position} position Position of insertion.\n * @param {module:engine/model/node~NodeSet} nodes The list of nodes to be inserted.\n */\n\n\nexports.default = WeakInsertDelta;\n(0, _batch.register)('weakInsert', function (position, nodes) {\n  var delta = new WeakInsertDelta();\n  this.addDelta(delta);\n\n  nodes = (0, _writer.normalizeNodes)(nodes);\n\n  var _iteratorNormalCompletion = true;\n  var _didIteratorError = false;\n  var _iteratorError = undefined;\n\n  try {\n    for (var _iterator = nodes[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n      var node = _step.value;\n\n      node.setAttributesTo(this.document.selection.getAttributes());\n    }\n  } catch (err) {\n    _didIteratorError = true;\n    _iteratorError = err;\n  } finally {\n    try {\n      if (!_iteratorNormalCompletion && _iterator.return) {\n        _iterator.return();\n      }\n    } finally {\n      if (_didIteratorError) {\n        throw _iteratorError;\n      }\n    }\n  }\n\n  var operation = new _insertoperation2.default(position, nodes, this.document.version);\n  delta.addOperation(operation);\n  this.document.applyOperation(operation);\n\n  return this;\n});\n\n_deltafactory2.default.register(WeakInsertDelta);\n\n/***/ }),\n/* 165 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _position = __webpack_require__(1);\n\nvar _position2 = _interopRequireDefault(_position);\n\nvar _range = __webpack_require__(3);\n\nvar _range2 = _interopRequireDefault(_range);\n\nvar _emittermixin = __webpack_require__(8);\n\nvar _emittermixin2 = _interopRequireDefault(_emittermixin);\n\nvar _mix = __webpack_require__(4);\n\nvar _mix2 = _interopRequireDefault(_mix);\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module engine/model/liveposition\n */\n\n/**\n * `LivePosition` is a type of {@link module:engine/model/position~Position Position}\n * that updates itself as {@link module:engine/model/document~Document document}\n * is changed through operations. It may be used as a bookmark.\n *\n * **Note:** Contrary to {@link module:engine/model/position~Position}, `LivePosition` works only in roots that are\n * {@link module:engine/model/rootelement~RootElement}.\n * If {@link module:engine/model/documentfragment~DocumentFragment} is passed, error will be thrown.\n *\n * **Note:** Be very careful when dealing with `LivePosition`. Each `LivePosition` instance bind events that might\n * have to be unbound.\n * Use {@link module:engine/model/liveposition~LivePosition#detach} whenever you don't need `LivePosition` anymore.\n *\n * @extends module:engine/model/position~Position\n */\nvar LivePosition = function (_Position) {\n\t_inherits(LivePosition, _Position);\n\n\t/**\n  * Creates a live position.\n  *\n  * @see module:engine/model/position~Position\n  * @param {module:engine/model/rootelement~RootElement} root\n  * @param {Array.<Number>} path\n  * @param {module:engine/model/position~PositionStickiness} [stickiness] Defaults to `'sticksToNext'`.\n  * See {@link module:engine/model/liveposition~LivePosition#stickiness}.\n  */\n\tfunction LivePosition(root, path, stickiness) {\n\t\t_classCallCheck(this, LivePosition);\n\n\t\tvar _this = _possibleConstructorReturn(this, (LivePosition.__proto__ || Object.getPrototypeOf(LivePosition)).call(this, root, path));\n\n\t\tif (!_this.root.is('rootElement')) {\n\t\t\t/**\n    * LivePosition root has to be an instance of RootElement.\n    *\n    * @error liveposition-root-not-rootelement\n    */\n\t\t\tthrow new _ckeditorerror2.default('model-liveposition-root-not-rootelement: LivePosition root has to be an instance of RootElement.');\n\t\t}\n\n\t\t/**\n   * Flag representing `LivePosition` stickiness. `LivePosition` might be sticking to previous node or next node.\n   * Whenever some nodes are inserted at the same position as `LivePosition`, `stickiness` is checked to decide if\n   * LivePosition should be moved. Similar applies when a range of nodes is moved and one of it's boundary\n   * position is same as `LivePosition`.\n   *\n   * Examples:\n   *\n   *\t\tInsert:\n   *\t\tPosition is at | and we insert at the same position, marked as ^:\n   *\t\t- | sticks to previous node: `<p>f|^oo</p>` => `<p>f|baroo</p>`\n   *\t\t- | sticks to next node: `<p>f^|oo</p>` => `<p>fbar|oo</p>`\n   *\n   *\t\tMove:\n   *\t\tPosition is at | and range [ ] is moved to position ^:\n   *\t\t- | sticks to previous node: `<p>f|[oo]</p><p>b^ar</p>` => `<p>f|</p><p>booar</p>`\n   *\t\t- | sticks to next node: `<p>f|[oo]</p><p>b^ar</p>` => `<p>f</p><p>b|ooar</p>`\n   *\n   * @member {module:engine/model/position~PositionStickiness} module:engine/model/liveposition~LivePosition#stickiness\n   */\n\t\t_this.stickiness = stickiness || 'sticksToNext';\n\n\t\tbindWithDocument.call(_this);\n\t\treturn _this;\n\t}\n\n\t/**\n  * Unbinds all events previously bound by `LivePosition`. Use it whenever you don't need `LivePosition` instance\n  * anymore (i.e. when leaving scope in which it was declared or before re-assigning variable that was\n  * referring to it).\n  */\n\n\n\t_createClass(LivePosition, [{\n\t\tkey: 'detach',\n\t\tvalue: function detach() {\n\t\t\tthis.stopListening();\n\t\t}\n\n\t\t/**\n   * @static\n   * @method module:engine/model/liveposition~LivePosition.createAfter\n   * @see module:engine/model/position~Position.createAfter\n   * @param {module:engine/model/node~Node} node\n   * @returns {module:engine/model/liveposition~LivePosition}\n   */\n\n\t\t/**\n   * @static\n   * @method module:engine/model/liveposition~LivePosition.createBefore\n   * @see module:engine/model/position~Position.createBefore\n   * @param {module:engine/model/node~Node} node\n   * @returns {module:engine/model/liveposition~LivePosition}\n   */\n\n\t\t/**\n   * @static\n   * @method module:engine/model/liveposition~LivePosition.createFromParentAndOffset\n   * @see module:engine/model/position~Position.createFromParentAndOffset\n   * @param {module:engine/model/element~Element} parent\n   * @param {Number} offset\n   * @returns {module:engine/model/liveposition~LivePosition}\n   */\n\n\t\t/**\n   * @static\n   * @method module:engine/model/liveposition~LivePosition.createFromPosition\n   * @see module:engine/model/position~Position.createFromPosition\n   * @param {module:engine/model/position~Position} position\n   * @returns {module:engine/model/liveposition~LivePosition}\n   */\n\n\t\t/**\n   * Fired when `LivePosition` instance is changed due to changes on {@link module:engine/model/document~Document}.\n   *\n   * @event module:engine/model/liveposition~LivePosition#change\n   * @param {module:engine/model/position~Position} oldPosition Position equal to this live position before it got changed.\n   */\n\n\t}]);\n\n\treturn LivePosition;\n}(_position2.default);\n\n/**\n * Binds this `LivePosition` to the {@link module:engine/model/document~Document document} that owns\n * this position's {@link module:engine/model/position~Position#root root}.\n *\n * @ignore\n * @private\n * @method module:engine/model/liveposition~LivePosition.bindWithDocument\n */\n\n\nexports.default = LivePosition;\nfunction bindWithDocument() {\n\tvar _this2 = this;\n\n\t/*jshint validthis: true */\n\t// Operation types handled by LivePosition (these are operations that change model tree structure).\n\tvar supportedTypes = new Set(['insert', 'move', 'remove', 'reinsert']);\n\n\tthis.listenTo(this.root.document, 'change', function (event, type, changes) {\n\t\tif (supportedTypes.has(type)) {\n\t\t\ttransform.call(_this2, type, changes.range, changes.sourcePosition);\n\t\t}\n\t}, { priority: 'high' });\n}\n\n/**\n * Updates this position accordingly to the updates applied to the model. Bases on change events.\n *\n * @ignore\n * @private\n * @method transform\n * @param {String} type Type of changes applied to the Tree Model.\n * @param {module:engine/model/range~Range} range Range containing the result of applied change.\n * @param {module:engine/model/position~Position} [position] Additional position parameter provided by some change events.\n */\nfunction transform(type, range, position) {\n\t/*jshint validthis: true */\n\n\tvar howMany = range.end.offset - range.start.offset;\n\tvar transformed = void 0;\n\n\tswitch (type) {\n\t\tcase 'insert':\n\t\t\tvar insertBefore = this.stickiness == 'sticksToNext';\n\t\t\ttransformed = this._getTransformedByInsertion(range.start, howMany, insertBefore);\n\t\t\tbreak;\n\n\t\tcase 'move':\n\t\tcase 'remove':\n\t\tcase 'reinsert':\n\t\t\tvar originalRange = _range2.default.createFromPositionAndShift(position, howMany);\n\n\t\t\tvar gotMoved = originalRange.containsPosition(this) || originalRange.start.isEqual(this) && this.stickiness == 'sticksToNext' || originalRange.end.isEqual(this) && this.stickiness == 'sticksToPrevious';\n\n\t\t\t// We can't use ._getTransformedByMove() because we have a different if-condition.\n\t\t\tif (gotMoved) {\n\t\t\t\ttransformed = this._getCombined(position, range.start);\n\t\t\t} else {\n\t\t\t\tvar _insertBefore = this.stickiness == 'sticksToNext';\n\t\t\t\ttransformed = this._getTransformedByMove(position, range.start, howMany, _insertBefore);\n\t\t\t}\n\t\t\tbreak;\n\t}\n\n\tif (!this.isEqual(transformed)) {\n\t\tvar oldPosition = _position2.default.createFromPosition(this);\n\n\t\tthis.path = transformed.path;\n\t\tthis.root = transformed.root;\n\n\t\tthis.fire('change', oldPosition);\n\t}\n}\n\n(0, _mix2.default)(LivePosition, _emittermixin2.default);\n\n/**\n * Enum representing how position is \"sticking\" with their neighbour nodes.\n * Possible values: `'sticksToNext'`, `'sticksToPrevious'`.\n *\n * @typedef {String} module:engine/model/position~PositionStickiness\n */\n\n/***/ }),\n/* 166 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if (\"value\" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };\n\nvar _element = __webpack_require__(5);\n\nvar _element2 = _interopRequireDefault(_element);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module engine/model/rootelement\n */\n\n/**\n * Type of {@link module:engine/model/element~Element} that is a root of a model tree.\n * @extends module:engine/model/element~Element\n */\nvar RootElement = function (_Element) {\n\t_inherits(RootElement, _Element);\n\n\t/**\n  * Creates root element.\n  *\n  * @param {module:engine/model/document~Document} doc Document that is an owner of this root.\n  * @param {String} name Node name.\n  * @param {String} [rootName='main'] Unique root name used to identify this root element by {@link module:engine/model/document~Document}.\n  */\n\tfunction RootElement(doc, name) {\n\t\tvar rootName = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 'main';\n\n\t\t_classCallCheck(this, RootElement);\n\n\t\t/**\n   * Document that is an owner of this root.\n   *\n   * @private\n   * @member {module:engine/model/document~Document}\n   */\n\t\tvar _this = _possibleConstructorReturn(this, (RootElement.__proto__ || Object.getPrototypeOf(RootElement)).call(this, name));\n\n\t\t_this._doc = doc;\n\n\t\t/**\n   * Unique root name used to identify this root element by {@link module:engine/model/document~Document}.\n   *\n   * @readonly\n   * @member {String}\n   */\n\t\t_this.rootName = rootName;\n\t\treturn _this;\n\t}\n\n\t/**\n  * {@link module:engine/model/document~Document Document} that owns this root element.\n  *\n  * In contrary, to {@link module:engine/model/node~Node node}, root element always have a `document`.\n  *\n  * @readonly\n  * @type {module:engine/model/document~Document|null}\n  */\n\n\n\t_createClass(RootElement, [{\n\t\tkey: 'is',\n\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tvalue: function is(type, name) {\n\t\t\tif (!name) {\n\t\t\t\treturn type == 'rootElement' || _get(RootElement.prototype.__proto__ || Object.getPrototypeOf(RootElement.prototype), 'is', this).call(this, type);\n\t\t\t} else {\n\t\t\t\treturn type == 'rootElement' && name == this.name || _get(RootElement.prototype.__proto__ || Object.getPrototypeOf(RootElement.prototype), 'is', this).call(this, type, name);\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Converts `RootElement` instance to `String` containing it's name.\n   *\n   * @returns {String} `RootElement` instance converted to `String`.\n   */\n\n\t}, {\n\t\tkey: 'toJSON',\n\t\tvalue: function toJSON() {\n\t\t\treturn this.rootName;\n\t\t}\n\t}, {\n\t\tkey: 'document',\n\t\tget: function get() {\n\t\t\treturn this._doc;\n\t\t}\n\t}]);\n\n\treturn RootElement;\n}(_element2.default);\n\nexports.default = RootElement;\n\n/***/ }),\n/* 167 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module engine/view/domconverter\n */\n\n/* globals Range, Node, NodeFilter */\n\nvar _text = __webpack_require__(29);\n\nvar _text2 = _interopRequireDefault(_text);\n\nvar _element = __webpack_require__(20);\n\nvar _element2 = _interopRequireDefault(_element);\n\nvar _position = __webpack_require__(24);\n\nvar _position2 = _interopRequireDefault(_position);\n\nvar _range = __webpack_require__(33);\n\nvar _range2 = _interopRequireDefault(_range);\n\nvar _selection = __webpack_require__(75);\n\nvar _selection2 = _interopRequireDefault(_selection);\n\nvar _documentfragment = __webpack_require__(116);\n\nvar _documentfragment2 = _interopRequireDefault(_documentfragment);\n\nvar _treewalker = __webpack_require__(76);\n\nvar _treewalker2 = _interopRequireDefault(_treewalker);\n\nvar _filler = __webpack_require__(57);\n\nvar _indexof = __webpack_require__(392);\n\nvar _indexof2 = _interopRequireDefault(_indexof);\n\nvar _getancestors = __webpack_require__(192);\n\nvar _getancestors2 = _interopRequireDefault(_getancestors);\n\nvar _getcommonancestor = __webpack_require__(389);\n\nvar _getcommonancestor2 = _interopRequireDefault(_getcommonancestor);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * DomConverter is a set of tools to do transformations between DOM nodes and view nodes. It also handles\n * {@link module:engine/view/domconverter~DomConverter#bindElements binding} these nodes.\n *\n * DomConverter does not check which nodes should be rendered (use {@link module:engine/view/renderer~Renderer}), does not keep a\n * state of a tree nor keeps synchronization between tree view and DOM tree (use {@link module:engine/view/document~Document}).\n *\n * DomConverter keeps DOM elements to View element bindings, so when the converter will be destroyed, the binding will\n * be lost. Two converters will keep separate binding maps, so one tree view can be bound with two DOM trees.\n */\nvar DomConverter = function () {\n\t/**\n  * Creates DOM converter.\n  *\n  * @param {Object} options Object with configuration options.\n  * @param {Function} [options.blockFiller=module:engine/view/filler~BR_FILLER] Block filler creator.\n  */\n\tfunction DomConverter() {\n\t\tvar options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n\n\t\t_classCallCheck(this, DomConverter);\n\n\t\t// Using WeakMap prevent memory leaks: when the converter will be destroyed all referenced between View and DOM\n\t\t// will be removed. Also because it is a *Weak*Map when both view and DOM elements will be removed referenced\n\t\t// will be also removed, isn't it brilliant?\n\t\t//\n\t\t// Yes, PJ. It is.\n\t\t//\n\t\t// You guys so smart.\n\t\t//\n\t\t// I've been here. Seen stuff. Afraid of code now.\n\n\t\t/**\n   * Block {@link module:engine/view/filler filler} creator, which is used to create all block fillers during the\n   * view to DOM conversion and to recognize block fillers during the DOM to view conversion.\n   *\n   * @readonly\n   * @member {Function} module:engine/view/domconverter~DomConverter#blockFiller\n   */\n\t\tthis.blockFiller = options.blockFiller || _filler.BR_FILLER;\n\n\t\t/**\n   * Tag names of DOM `Element`s which are considered pre-formatted elements.\n   *\n   * @member {Array.<String>} module:engine/view/domconverter~DomConverter#preElements\n   */\n\t\tthis.preElements = ['pre'];\n\n\t\t/**\n   * Tag names of DOM `Element`s which are considered block elements.\n   *\n   * @member {Array.<String>} module:engine/view/domconverter~DomConverter#blockElements\n   */\n\t\tthis.blockElements = ['p', 'div', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6'];\n\n\t\t/**\n   * DOM to View mapping.\n   *\n   * @private\n   * @member {WeakMap} module:engine/view/domconverter~DomConverter#_domToViewMapping\n   */\n\t\tthis._domToViewMapping = new WeakMap();\n\n\t\t/**\n   * View to DOM mapping.\n   *\n   * @private\n   * @member {WeakMap} module:engine/view/domconverter~DomConverter#_viewToDomMapping\n   */\n\t\tthis._viewToDomMapping = new WeakMap();\n\n\t\t/**\n   * Holds mapping between fake selection containers and corresponding view selections.\n   *\n   * @private\n   * @member {WeakMap} module:engine/view/domconverter~DomConverter#_fakeSelectionMapping\n   */\n\t\tthis._fakeSelectionMapping = new WeakMap();\n\t}\n\n\t/**\n  * Binds given DOM element that represents fake selection to {@link module:engine/view/selection~Selection view selection}.\n  * View selection copy is stored and can be retrieved by {@link module:engine/view/domconverter~DomConverter#fakeSelectionToView} method.\n  *\n  * @param {HTMLElement} domElement\n  * @param {module:engine/view/selection~Selection} viewSelection\n  */\n\n\n\t_createClass(DomConverter, [{\n\t\tkey: 'bindFakeSelection',\n\t\tvalue: function bindFakeSelection(domElement, viewSelection) {\n\t\t\tthis._fakeSelectionMapping.set(domElement, _selection2.default.createFromSelection(viewSelection));\n\t\t}\n\n\t\t/**\n   * Returns {@link module:engine/view/selection~Selection view selection} instance corresponding to given DOM element that represents fake\n   * selection. Returns `undefined` if binding to given DOM element does not exists.\n   *\n   * @param {HTMLElement} domElement\n   * @returns {module:engine/view/selection~Selection|undefined}\n   */\n\n\t}, {\n\t\tkey: 'fakeSelectionToView',\n\t\tvalue: function fakeSelectionToView(domElement) {\n\t\t\treturn this._fakeSelectionMapping.get(domElement);\n\t\t}\n\n\t\t/**\n   * Binds DOM and View elements, so it will be possible to get corresponding elements using\n   * {@link module:engine/view/domconverter~DomConverter#getCorrespondingViewElement getCorrespondingViewElement} and\n   * {@link module:engine/view/domconverter~DomConverter#getCorrespondingDomElement getCorrespondingDomElement}.\n   *\n   * @param {HTMLElement} domElement DOM element to bind.\n   * @param {module:engine/view/element~Element} viewElement View element to bind.\n   */\n\n\t}, {\n\t\tkey: 'bindElements',\n\t\tvalue: function bindElements(domElement, viewElement) {\n\t\t\tthis._domToViewMapping.set(domElement, viewElement);\n\t\t\tthis._viewToDomMapping.set(viewElement, domElement);\n\t\t}\n\n\t\t/**\n   * Binds DOM and View document fragments, so it will be possible to get corresponding document fragments using\n   * {@link module:engine/view/domconverter~DomConverter#getCorrespondingViewDocumentFragment getCorrespondingViewDocumentFragment} and\n   * {@link module:engine/view/domconverter~DomConverter#getCorrespondingDomDocumentFragment getCorrespondingDomDocumentFragment}.\n   *\n   * @param {DocumentFragment} domFragment DOM document fragment to bind.\n   * @param {module:engine/view/documentfragment~DocumentFragment} viewFragment View document fragment to bind.\n   */\n\n\t}, {\n\t\tkey: 'bindDocumentFragments',\n\t\tvalue: function bindDocumentFragments(domFragment, viewFragment) {\n\t\t\tthis._domToViewMapping.set(domFragment, viewFragment);\n\t\t\tthis._viewToDomMapping.set(viewFragment, domFragment);\n\t\t}\n\n\t\t/**\n   * Converts view to DOM. For all text nodes, not bound elements and document fragments new items will\n   * be created. For bound elements and document fragments function will return corresponding items.\n   *\n   * @param {module:engine/view/node~Node|module:engine/view/documentfragment~DocumentFragment} viewNode View node or document fragment to\n   * transform.\n   * @param {Document} domDocument Document which will be used to create DOM nodes.\n   * @param {Object} [options] Conversion options.\n   * @param {Boolean} [options.bind=false] Determines whether new elements will be bound.\n   * @param {Boolean} [options.withChildren=true] If true node's and document fragment's children  will be converted too.\n   * @returns {Node|DocumentFragment} Converted node or DocumentFragment.\n   */\n\n\t}, {\n\t\tkey: 'viewToDom',\n\t\tvalue: function viewToDom(viewNode, domDocument) {\n\t\t\tvar options = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};\n\n\t\t\tif (viewNode.is('text')) {\n\t\t\t\tvar textData = this._processDataFromViewText(viewNode);\n\n\t\t\t\treturn domDocument.createTextNode(textData);\n\t\t\t} else {\n\t\t\t\tif (this.getCorrespondingDom(viewNode)) {\n\t\t\t\t\treturn this.getCorrespondingDom(viewNode);\n\t\t\t\t}\n\n\t\t\t\tvar domElement = void 0;\n\n\t\t\t\tif (viewNode.is('documentFragment')) {\n\t\t\t\t\t// Create DOM document fragment.\n\t\t\t\t\tdomElement = domDocument.createDocumentFragment();\n\n\t\t\t\t\tif (options.bind) {\n\t\t\t\t\t\tthis.bindDocumentFragments(domElement, viewNode);\n\t\t\t\t\t}\n\t\t\t\t} else {\n\t\t\t\t\t// Create DOM element.\n\t\t\t\t\tdomElement = domDocument.createElement(viewNode.name);\n\n\t\t\t\t\tif (options.bind) {\n\t\t\t\t\t\tthis.bindElements(domElement, viewNode);\n\t\t\t\t\t}\n\n\t\t\t\t\t// Copy element's attributes.\n\t\t\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\t\t\tvar _didIteratorError = false;\n\t\t\t\t\tvar _iteratorError = undefined;\n\n\t\t\t\t\ttry {\n\t\t\t\t\t\tfor (var _iterator = viewNode.getAttributeKeys()[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\t\t\tvar key = _step.value;\n\n\t\t\t\t\t\t\tdomElement.setAttribute(key, viewNode.getAttribute(key));\n\t\t\t\t\t\t}\n\t\t\t\t\t} catch (err) {\n\t\t\t\t\t\t_didIteratorError = true;\n\t\t\t\t\t\t_iteratorError = err;\n\t\t\t\t\t} finally {\n\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} finally {\n\t\t\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\tif (options.withChildren || options.withChildren === undefined) {\n\t\t\t\t\tvar _iteratorNormalCompletion2 = true;\n\t\t\t\t\tvar _didIteratorError2 = false;\n\t\t\t\t\tvar _iteratorError2 = undefined;\n\n\t\t\t\t\ttry {\n\t\t\t\t\t\tfor (var _iterator2 = this.viewChildrenToDom(viewNode, domDocument, options)[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {\n\t\t\t\t\t\t\tvar child = _step2.value;\n\n\t\t\t\t\t\t\tdomElement.appendChild(child);\n\t\t\t\t\t\t}\n\t\t\t\t\t} catch (err) {\n\t\t\t\t\t\t_didIteratorError2 = true;\n\t\t\t\t\t\t_iteratorError2 = err;\n\t\t\t\t\t} finally {\n\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\tif (!_iteratorNormalCompletion2 && _iterator2.return) {\n\t\t\t\t\t\t\t\t_iterator2.return();\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} finally {\n\t\t\t\t\t\t\tif (_didIteratorError2) {\n\t\t\t\t\t\t\t\tthrow _iteratorError2;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\treturn domElement;\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Converts children of the view element to DOM using {@link module:engine/view/domconverter~DomConverter#viewToDom} method.\n   * Additionally this method adds block {@link module:engine/view/filler filler} to the list of children, if needed.\n   *\n   * @param {module:engine/view/element~Element|module:engine/view/documentfragment~DocumentFragment} viewElement Parent view element.\n   * @param {Document} domDocument Document which will be used to create DOM nodes.\n   * @param {Object} options See {@link module:engine/view/domconverter~DomConverter#viewToDom} options parameter.\n   * @returns {Iterable.<Node>} DOM nodes.\n   */\n\n\t}, {\n\t\tkey: 'viewChildrenToDom',\n\t\tvalue: regeneratorRuntime.mark(function viewChildrenToDom(viewElement, domDocument) {\n\t\t\tvar options = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};\n\n\t\t\tvar fillerPositionOffset, offset, _iteratorNormalCompletion3, _didIteratorError3, _iteratorError3, _iterator3, _step3, childView;\n\n\t\t\treturn regeneratorRuntime.wrap(function viewChildrenToDom$(_context) {\n\t\t\t\twhile (1) {\n\t\t\t\t\tswitch (_context.prev = _context.next) {\n\t\t\t\t\t\tcase 0:\n\t\t\t\t\t\t\tfillerPositionOffset = viewElement.getFillerOffset && viewElement.getFillerOffset();\n\t\t\t\t\t\t\toffset = 0;\n\t\t\t\t\t\t\t_iteratorNormalCompletion3 = true;\n\t\t\t\t\t\t\t_didIteratorError3 = false;\n\t\t\t\t\t\t\t_iteratorError3 = undefined;\n\t\t\t\t\t\t\t_context.prev = 5;\n\t\t\t\t\t\t\t_iterator3 = viewElement.getChildren()[Symbol.iterator]();\n\n\t\t\t\t\t\tcase 7:\n\t\t\t\t\t\t\tif (_iteratorNormalCompletion3 = (_step3 = _iterator3.next()).done) {\n\t\t\t\t\t\t\t\t_context.next = 18;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\tchildView = _step3.value;\n\n\t\t\t\t\t\t\tif (!(fillerPositionOffset === offset)) {\n\t\t\t\t\t\t\t\t_context.next = 12;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t_context.next = 12;\n\t\t\t\t\t\t\treturn this.blockFiller(domDocument);\n\n\t\t\t\t\t\tcase 12:\n\t\t\t\t\t\t\t_context.next = 14;\n\t\t\t\t\t\t\treturn this.viewToDom(childView, domDocument, options);\n\n\t\t\t\t\t\tcase 14:\n\n\t\t\t\t\t\t\toffset++;\n\n\t\t\t\t\t\tcase 15:\n\t\t\t\t\t\t\t_iteratorNormalCompletion3 = true;\n\t\t\t\t\t\t\t_context.next = 7;\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase 18:\n\t\t\t\t\t\t\t_context.next = 24;\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase 20:\n\t\t\t\t\t\t\t_context.prev = 20;\n\t\t\t\t\t\t\t_context.t0 = _context['catch'](5);\n\t\t\t\t\t\t\t_didIteratorError3 = true;\n\t\t\t\t\t\t\t_iteratorError3 = _context.t0;\n\n\t\t\t\t\t\tcase 24:\n\t\t\t\t\t\t\t_context.prev = 24;\n\t\t\t\t\t\t\t_context.prev = 25;\n\n\t\t\t\t\t\t\tif (!_iteratorNormalCompletion3 && _iterator3.return) {\n\t\t\t\t\t\t\t\t_iterator3.return();\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\tcase 27:\n\t\t\t\t\t\t\t_context.prev = 27;\n\n\t\t\t\t\t\t\tif (!_didIteratorError3) {\n\t\t\t\t\t\t\t\t_context.next = 30;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\tthrow _iteratorError3;\n\n\t\t\t\t\t\tcase 30:\n\t\t\t\t\t\t\treturn _context.finish(27);\n\n\t\t\t\t\t\tcase 31:\n\t\t\t\t\t\t\treturn _context.finish(24);\n\n\t\t\t\t\t\tcase 32:\n\t\t\t\t\t\t\tif (!(fillerPositionOffset === offset)) {\n\t\t\t\t\t\t\t\t_context.next = 35;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t_context.next = 35;\n\t\t\t\t\t\t\treturn this.blockFiller(domDocument);\n\n\t\t\t\t\t\tcase 35:\n\t\t\t\t\t\tcase 'end':\n\t\t\t\t\t\t\treturn _context.stop();\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}, viewChildrenToDom, this, [[5, 20, 24, 32], [25,, 27, 31]]);\n\t\t})\n\n\t\t/**\n   * Converts view {@link module:engine/view/range~Range} to DOM range.\n   * Inline and block {@link module:engine/view/filler fillers} are handled during the conversion.\n   *\n   * @param {module:engine/view/range~Range} viewRange View range.\n   * @returns {Range} DOM range.\n   */\n\n\t}, {\n\t\tkey: 'viewRangeToDom',\n\t\tvalue: function viewRangeToDom(viewRange) {\n\t\t\tvar domStart = this.viewPositionToDom(viewRange.start);\n\t\t\tvar domEnd = this.viewPositionToDom(viewRange.end);\n\n\t\t\tvar domRange = new Range();\n\t\t\tdomRange.setStart(domStart.parent, domStart.offset);\n\t\t\tdomRange.setEnd(domEnd.parent, domEnd.offset);\n\n\t\t\treturn domRange;\n\t\t}\n\n\t\t/**\n   * Converts view {@link module:engine/view/position~Position} to DOM parent and offset.\n   *\n   * Inline and block {@link module:engine/view/filler fillers} are handled during the conversion.\n   * If the converted position is directly before inline filler it is moved inside the filler.\n   *\n   * @param {module:engine/view/position~Position} viewPosition View position.\n   * @returns {Object|null} position DOM position or `null` if view position could not be converted to DOM.\n   * @returns {Node} position.parent DOM position parent.\n   * @returns {Number} position.offset DOM position offset.\n   */\n\n\t}, {\n\t\tkey: 'viewPositionToDom',\n\t\tvalue: function viewPositionToDom(viewPosition) {\n\t\t\tvar viewParent = viewPosition.parent;\n\n\t\t\tif (viewParent.is('text')) {\n\t\t\t\tvar domParent = this.getCorrespondingDomText(viewParent);\n\n\t\t\t\tif (!domParent) {\n\t\t\t\t\t// Position is in a view text node that has not been rendered to DOM yet.\n\t\t\t\t\treturn null;\n\t\t\t\t}\n\n\t\t\t\tvar offset = viewPosition.offset;\n\n\t\t\t\tif ((0, _filler.startsWithFiller)(domParent)) {\n\t\t\t\t\toffset += _filler.INLINE_FILLER_LENGTH;\n\t\t\t\t}\n\n\t\t\t\treturn { parent: domParent, offset: offset };\n\t\t\t} else {\n\t\t\t\t// viewParent is instance of ViewElement.\n\t\t\t\tvar _domParent = void 0,\n\t\t\t\t    domBefore = void 0,\n\t\t\t\t    domAfter = void 0;\n\n\t\t\t\tif (viewPosition.offset === 0) {\n\t\t\t\t\t_domParent = this.getCorrespondingDom(viewPosition.parent);\n\n\t\t\t\t\tif (!_domParent) {\n\t\t\t\t\t\t// Position is in a view element that has not been rendered to DOM yet.\n\t\t\t\t\t\treturn null;\n\t\t\t\t\t}\n\n\t\t\t\t\tdomAfter = _domParent.childNodes[0];\n\t\t\t\t} else {\n\t\t\t\t\tdomBefore = this.getCorrespondingDom(viewPosition.nodeBefore);\n\n\t\t\t\t\tif (!domBefore) {\n\t\t\t\t\t\t// Position is after a view element that has not been rendered to DOM yet.\n\t\t\t\t\t\treturn null;\n\t\t\t\t\t}\n\n\t\t\t\t\t_domParent = domBefore.parentNode;\n\t\t\t\t\tdomAfter = domBefore.nextSibling;\n\t\t\t\t}\n\n\t\t\t\t// If there is an inline filler at position return position inside the filler. We should never return\n\t\t\t\t// the position before the inline filler.\n\t\t\t\tif (this.isText(domAfter) && (0, _filler.startsWithFiller)(domAfter)) {\n\t\t\t\t\treturn { parent: domAfter, offset: _filler.INLINE_FILLER_LENGTH };\n\t\t\t\t}\n\n\t\t\t\tvar _offset = domBefore ? (0, _indexof2.default)(domBefore) + 1 : 0;\n\n\t\t\t\treturn { parent: _domParent, offset: _offset };\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Converts DOM to view. For all text nodes, not bound elements and document fragments new items will\n   * be created. For bound elements and document fragments function will return corresponding items. For\n   * {@link module:engine/view/filler fillers} `null` will be returned.\n   *\n   * @param {Node|DocumentFragment} domNode DOM node or document fragment to transform.\n   * @param {Object} [options] Conversion options.\n   * @param {Boolean} [options.bind=false] Determines whether new elements will be bound.\n   * @param {Boolean} [options.withChildren=true] If `true`, node's and document fragment's children will be converted too.\n   * @param {Boolean} [options.keepOriginalCase=false] If `false`, node's tag name will be converter to lower case.\n   * @returns {module:engine/view/node~Node|module:engine/view/documentfragment~DocumentFragment|null} Converted node or document fragment or\n   * `null`\n   * if DOM node is a {@link module:engine/view/filler filler} or the given node is an empty text node.\n   */\n\n\t}, {\n\t\tkey: 'domToView',\n\t\tvalue: function domToView(domNode) {\n\t\t\tvar options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n\n\t\t\tif ((0, _filler.isBlockFiller)(domNode, this.blockFiller)) {\n\t\t\t\treturn null;\n\t\t\t}\n\n\t\t\tif (this.isText(domNode)) {\n\t\t\t\tif ((0, _filler.isInlineFiller)(domNode)) {\n\t\t\t\t\treturn null;\n\t\t\t\t} else {\n\t\t\t\t\tvar textData = this._processDataFromDomText(domNode);\n\n\t\t\t\t\treturn textData === '' ? null : new _text2.default(textData);\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\tif (this.getCorrespondingView(domNode)) {\n\t\t\t\t\treturn this.getCorrespondingView(domNode);\n\t\t\t\t}\n\n\t\t\t\tvar viewElement = void 0;\n\n\t\t\t\tif (this.isDocumentFragment(domNode)) {\n\t\t\t\t\t// Create view document fragment.\n\t\t\t\t\tviewElement = new _documentfragment2.default();\n\n\t\t\t\t\tif (options.bind) {\n\t\t\t\t\t\tthis.bindDocumentFragments(domNode, viewElement);\n\t\t\t\t\t}\n\t\t\t\t} else {\n\t\t\t\t\t// Create view element.\n\t\t\t\t\tvar viewName = options.keepOriginalCase ? domNode.tagName : domNode.tagName.toLowerCase();\n\t\t\t\t\tviewElement = new _element2.default(viewName);\n\n\t\t\t\t\tif (options.bind) {\n\t\t\t\t\t\tthis.bindElements(domNode, viewElement);\n\t\t\t\t\t}\n\n\t\t\t\t\t// Copy element's attributes.\n\t\t\t\t\tvar attrs = domNode.attributes;\n\n\t\t\t\t\tfor (var i = attrs.length - 1; i >= 0; i--) {\n\t\t\t\t\t\tviewElement.setAttribute(attrs[i].name, attrs[i].value);\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\tif (options.withChildren || options.withChildren === undefined) {\n\t\t\t\t\tvar _iteratorNormalCompletion4 = true;\n\t\t\t\t\tvar _didIteratorError4 = false;\n\t\t\t\t\tvar _iteratorError4 = undefined;\n\n\t\t\t\t\ttry {\n\t\t\t\t\t\tfor (var _iterator4 = this.domChildrenToView(domNode, options)[Symbol.iterator](), _step4; !(_iteratorNormalCompletion4 = (_step4 = _iterator4.next()).done); _iteratorNormalCompletion4 = true) {\n\t\t\t\t\t\t\tvar child = _step4.value;\n\n\t\t\t\t\t\t\tviewElement.appendChildren(child);\n\t\t\t\t\t\t}\n\t\t\t\t\t} catch (err) {\n\t\t\t\t\t\t_didIteratorError4 = true;\n\t\t\t\t\t\t_iteratorError4 = err;\n\t\t\t\t\t} finally {\n\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\tif (!_iteratorNormalCompletion4 && _iterator4.return) {\n\t\t\t\t\t\t\t\t_iterator4.return();\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} finally {\n\t\t\t\t\t\t\tif (_didIteratorError4) {\n\t\t\t\t\t\t\t\tthrow _iteratorError4;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\treturn viewElement;\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Converts children of the DOM element to view nodes using {@link module:engine/view/domconverter~DomConverter#domToView} method.\n   * Additionally this method omits block {@link module:engine/view/filler filler}, if it exists in the DOM parent.\n   *\n   * @param {HTMLElement} domElement Parent DOM element.\n   * @param {Object} options See {@link module:engine/view/domconverter~DomConverter#domToView} options parameter.\n   * @returns {Iterable.<module:engine/view/node~Node>} View nodes.\n   */\n\n\t}, {\n\t\tkey: 'domChildrenToView',\n\t\tvalue: regeneratorRuntime.mark(function domChildrenToView(domElement) {\n\t\t\tvar options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n\t\t\tvar i, domChild, viewChild;\n\t\t\treturn regeneratorRuntime.wrap(function domChildrenToView$(_context2) {\n\t\t\t\twhile (1) {\n\t\t\t\t\tswitch (_context2.prev = _context2.next) {\n\t\t\t\t\t\tcase 0:\n\t\t\t\t\t\t\ti = 0;\n\n\t\t\t\t\t\tcase 1:\n\t\t\t\t\t\t\tif (!(i < domElement.childNodes.length)) {\n\t\t\t\t\t\t\t\t_context2.next = 10;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\tdomChild = domElement.childNodes[i];\n\t\t\t\t\t\t\tviewChild = this.domToView(domChild, options);\n\n\t\t\t\t\t\t\tif (!(viewChild !== null)) {\n\t\t\t\t\t\t\t\t_context2.next = 7;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t_context2.next = 7;\n\t\t\t\t\t\t\treturn viewChild;\n\n\t\t\t\t\t\tcase 7:\n\t\t\t\t\t\t\ti++;\n\t\t\t\t\t\t\t_context2.next = 1;\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase 10:\n\t\t\t\t\t\tcase 'end':\n\t\t\t\t\t\t\treturn _context2.stop();\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}, domChildrenToView, this);\n\t\t})\n\n\t\t/**\n   * Converts DOM selection to view {@link module:engine/view/selection~Selection}.\n   * Ranges which cannot be converted will be omitted.\n   *\n   * @param {Selection} domSelection DOM selection.\n   * @returns {module:engine/view/selection~Selection} View selection.\n   */\n\n\t}, {\n\t\tkey: 'domSelectionToView',\n\t\tvalue: function domSelectionToView(domSelection) {\n\t\t\t// DOM selection might be placed in fake selection container.\n\t\t\t// If container contains fake selection - return corresponding view selection.\n\t\t\tif (domSelection.rangeCount === 1) {\n\t\t\t\tvar container = domSelection.getRangeAt(0).startContainer;\n\n\t\t\t\t// The DOM selection might be moved to the text node inside the fake selection container.\n\t\t\t\tif (this.isText(container)) {\n\t\t\t\t\tcontainer = container.parentNode;\n\t\t\t\t}\n\n\t\t\t\tvar _viewSelection = this.fakeSelectionToView(container);\n\n\t\t\t\tif (_viewSelection) {\n\t\t\t\t\treturn _viewSelection;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tvar viewSelection = new _selection2.default();\n\t\t\tvar isBackward = this.isDomSelectionBackward(domSelection);\n\n\t\t\tfor (var i = 0; i < domSelection.rangeCount; i++) {\n\t\t\t\t// DOM Range have correct start and end, no matter what is the DOM Selection direction. So we don't have to fix anything.\n\t\t\t\tvar domRange = domSelection.getRangeAt(i);\n\t\t\t\tvar viewRange = this.domRangeToView(domRange);\n\n\t\t\t\tif (viewRange) {\n\t\t\t\t\tviewSelection.addRange(viewRange, isBackward);\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn viewSelection;\n\t\t}\n\n\t\t/**\n   * Converts DOM Range to view {@link module:engine/view/range~Range}.\n   * If the start or end position can not be converted `null` is returned.\n   *\n   * @param {Range} domRange DOM range.\n   * @returns {module:engine/view/range~Range|null} View range.\n   */\n\n\t}, {\n\t\tkey: 'domRangeToView',\n\t\tvalue: function domRangeToView(domRange) {\n\t\t\tvar viewStart = this.domPositionToView(domRange.startContainer, domRange.startOffset);\n\t\t\tvar viewEnd = this.domPositionToView(domRange.endContainer, domRange.endOffset);\n\n\t\t\tif (viewStart && viewEnd) {\n\t\t\t\treturn new _range2.default(viewStart, viewEnd);\n\t\t\t}\n\n\t\t\treturn null;\n\t\t}\n\n\t\t/**\n   * Converts DOM parent and offset to view {@link module:engine/view/position~Position}.\n   *\n   * If the position is inside a {@link module:engine/view/filler filler} which has no corresponding view node,\n   * position of the filler will be converted and returned.\n   *\n   * If structures are too different and it is not possible to find corresponding position then `null` will be returned.\n   *\n   * @param {Node} domParent DOM position parent.\n   * @param {Number} domOffset DOM position offset.\n   * @returns {module:engine/view/position~Position} viewPosition View position.\n   */\n\n\t}, {\n\t\tkey: 'domPositionToView',\n\t\tvalue: function domPositionToView(domParent, domOffset) {\n\t\t\tif ((0, _filler.isBlockFiller)(domParent, this.blockFiller)) {\n\t\t\t\treturn this.domPositionToView(domParent.parentNode, (0, _indexof2.default)(domParent));\n\t\t\t}\n\n\t\t\tif (this.isText(domParent)) {\n\t\t\t\tif ((0, _filler.isInlineFiller)(domParent)) {\n\t\t\t\t\treturn this.domPositionToView(domParent.parentNode, (0, _indexof2.default)(domParent));\n\t\t\t\t}\n\n\t\t\t\tvar viewParent = this.getCorrespondingViewText(domParent);\n\t\t\t\tvar offset = domOffset;\n\n\t\t\t\tif (!viewParent) {\n\t\t\t\t\treturn null;\n\t\t\t\t}\n\n\t\t\t\tif ((0, _filler.startsWithFiller)(domParent)) {\n\t\t\t\t\toffset -= _filler.INLINE_FILLER_LENGTH;\n\t\t\t\t\toffset = offset < 0 ? 0 : offset;\n\t\t\t\t}\n\n\t\t\t\treturn new _position2.default(viewParent, offset);\n\t\t\t}\n\t\t\t// domParent instanceof HTMLElement.\n\t\t\telse {\n\t\t\t\t\tif (domOffset === 0) {\n\t\t\t\t\t\tvar _viewParent = this.getCorrespondingView(domParent);\n\n\t\t\t\t\t\tif (_viewParent) {\n\t\t\t\t\t\t\treturn new _position2.default(_viewParent, 0);\n\t\t\t\t\t\t}\n\t\t\t\t\t} else {\n\t\t\t\t\t\tvar viewBefore = this.getCorrespondingView(domParent.childNodes[domOffset - 1]);\n\n\t\t\t\t\t\t// TODO #663\n\t\t\t\t\t\tif (viewBefore && viewBefore.parent) {\n\t\t\t\t\t\t\treturn new _position2.default(viewBefore.parent, viewBefore.index + 1);\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t\treturn null;\n\t\t\t\t}\n\t\t}\n\n\t\t/**\n   * Gets corresponding view item. This function use\n   * {@link module:engine/view/domconverter~DomConverter#getCorrespondingViewElement getCorrespondingViewElement}\n   * for elements, {@link  module:engine/view/domconverter~DomConverter#getCorrespondingViewText getCorrespondingViewText} for text\n   * nodes and {@link module:engine/view/domconverter~DomConverter#getCorrespondingViewDocumentFragment getCorrespondingViewDocumentFragment}\n   * for document fragments.\n   *\n   * Note that for the block or inline {@link module:engine/view/filler filler} this method returns `null`.\n   *\n   * @param {Node|DocumentFragment} domNode DOM node or document fragment.\n   * @returns {module:engine/view/node~Node|module:engine/view/documentfragment~DocumentFragment|null} Corresponding view item.\n   */\n\n\t}, {\n\t\tkey: 'getCorrespondingView',\n\t\tvalue: function getCorrespondingView(domNode) {\n\t\t\tif (this.isElement(domNode)) {\n\t\t\t\treturn this.getCorrespondingViewElement(domNode);\n\t\t\t} else if (this.isDocumentFragment(domNode)) {\n\t\t\t\treturn this.getCorrespondingViewDocumentFragment(domNode);\n\t\t\t} else if (this.isText(domNode)) {\n\t\t\t\treturn this.getCorrespondingViewText(domNode);\n\t\t\t}\n\n\t\t\treturn null;\n\t\t}\n\n\t\t/**\n   * Gets corresponding view element. Returns element if an view element was\n   * {@link module:engine/view/domconverter~DomConverter#bindElements bound} to the given DOM element or `null` otherwise.\n   *\n   * @param {HTMLElement} domElement DOM element.\n   * @returns {module:engine/view/element~Element|null} Corresponding element or `null` if no element was bound.\n   */\n\n\t}, {\n\t\tkey: 'getCorrespondingViewElement',\n\t\tvalue: function getCorrespondingViewElement(domElement) {\n\t\t\treturn this._domToViewMapping.get(domElement);\n\t\t}\n\n\t\t/**\n   * Gets corresponding view document fragment. Returns document fragment if an view element was\n   * {@link module:engine/view/domconverter~DomConverter#bindDocumentFragments bound} to the given DOM fragment or `null` otherwise.\n   *\n   * @param {DocumentFragment} domFragment DOM element.\n   * @returns {module:engine/view/documentfragment~DocumentFragment|null} Corresponding document fragment or `null` if none element was\n   * bound.\n   */\n\n\t}, {\n\t\tkey: 'getCorrespondingViewDocumentFragment',\n\t\tvalue: function getCorrespondingViewDocumentFragment(domFragment) {\n\t\t\treturn this._domToViewMapping.get(domFragment);\n\t\t}\n\n\t\t/**\n   * Gets corresponding text node. Text nodes are not {@link module:engine/view/domconverter~DomConverter#bindElements bound},\n   * corresponding text node is returned based on the sibling or parent.\n   *\n   * If the directly previous sibling is a {@link module:engine/view/domconverter~DomConverter#bindElements bound} element, it is used\n   * to find the corresponding text node.\n   *\n   * If this is a first child in the parent and the parent is a {@link module:engine/view/domconverter~DomConverter#bindElements bound}\n   * element, it is used to find the corresponding text node.\n   *\n   * Otherwise `null` is returned.\n   *\n   * Note that for the block or inline {@link module:engine/view/filler filler} this method returns `null`.\n   *\n   * @param {Text} domText DOM text node.\n   * @returns {module:engine/view/text~Text|null} Corresponding view text node or `null`, if it was not possible to find a\n   * corresponding node.\n   */\n\n\t}, {\n\t\tkey: 'getCorrespondingViewText',\n\t\tvalue: function getCorrespondingViewText(domText) {\n\t\t\tif ((0, _filler.isInlineFiller)(domText)) {\n\t\t\t\treturn null;\n\t\t\t}\n\n\t\t\tvar previousSibling = domText.previousSibling;\n\n\t\t\t// Try to use previous sibling to find the corresponding text node.\n\t\t\tif (previousSibling) {\n\t\t\t\tif (!this.isElement(previousSibling)) {\n\t\t\t\t\t// The previous is text or comment.\n\t\t\t\t\treturn null;\n\t\t\t\t}\n\n\t\t\t\tvar viewElement = this.getCorrespondingViewElement(previousSibling);\n\n\t\t\t\tif (viewElement) {\n\t\t\t\t\tvar nextSibling = viewElement.nextSibling;\n\n\t\t\t\t\t// It might be filler which has no corresponding view node.\n\t\t\t\t\tif (nextSibling instanceof _text2.default) {\n\t\t\t\t\t\treturn viewElement.nextSibling;\n\t\t\t\t\t} else {\n\t\t\t\t\t\treturn null;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t\t// Try to use parent to find the corresponding text node.\n\t\t\telse {\n\t\t\t\t\tvar _viewElement = this.getCorrespondingViewElement(domText.parentNode);\n\n\t\t\t\t\tif (_viewElement) {\n\t\t\t\t\t\tvar firstChild = _viewElement.getChild(0);\n\n\t\t\t\t\t\t// It might be filler which has no corresponding view node.\n\t\t\t\t\t\tif (firstChild instanceof _text2.default) {\n\t\t\t\t\t\t\treturn firstChild;\n\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\treturn null;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\treturn null;\n\t\t}\n\n\t\t/**\n   * Gets corresponding DOM item. This function uses\n   * {@link module:engine/view/domconverter~DomConverter#getCorrespondingDomElement getCorrespondingDomElement} for\n   * elements, {@link module:engine/view/domconverter~DomConverter#getCorrespondingDomText getCorrespondingDomText} for text nodes\n   * and {@link module:engine/view/domconverter~DomConverter#getCorrespondingDomDocumentFragment getCorrespondingDomDocumentFragment}\n   * for document fragments.\n   *\n   * @param {module:engine/view/node~Node|module:engine/view/documentfragment~DocumentFragment} viewNode View node or document fragment.\n   * @returns {Node|DocumentFragment|null} Corresponding DOM node or document fragment.\n   */\n\n\t}, {\n\t\tkey: 'getCorrespondingDom',\n\t\tvalue: function getCorrespondingDom(viewNode) {\n\t\t\tif (viewNode instanceof _element2.default) {\n\t\t\t\treturn this.getCorrespondingDomElement(viewNode);\n\t\t\t} else if (viewNode instanceof _documentfragment2.default) {\n\t\t\t\treturn this.getCorrespondingDomDocumentFragment(viewNode);\n\t\t\t} else if (viewNode instanceof _text2.default) {\n\t\t\t\treturn this.getCorrespondingDomText(viewNode);\n\t\t\t}\n\n\t\t\treturn null;\n\t\t}\n\n\t\t/**\n   * Gets corresponding DOM element. Returns element if an DOM element was\n   * {@link module:engine/view/domconverter~DomConverter#bindElements bound} to the given view element or `null` otherwise.\n   *\n   * @param {module:engine/view/element~Element} viewElement View element.\n   * @returns {HTMLElement|null} Corresponding element or `null` if none element was bound.\n   */\n\n\t}, {\n\t\tkey: 'getCorrespondingDomElement',\n\t\tvalue: function getCorrespondingDomElement(viewElement) {\n\t\t\treturn this._viewToDomMapping.get(viewElement);\n\t\t}\n\n\t\t/**\n   * Gets corresponding DOM document fragment. Returns document fragment if an DOM element was\n   * {@link module:engine/view/domconverter~DomConverter#bindDocumentFragments bound} to the given view document fragment or `null`\n   * otherwise.\n   *\n   * @param {module:engine/view/documentfragment~DocumentFragment} viewDocumentFragment View document fragment.\n   * @returns {DocumentFragment|null} Corresponding document fragment or `null` if no fragment was bound.\n   */\n\n\t}, {\n\t\tkey: 'getCorrespondingDomDocumentFragment',\n\t\tvalue: function getCorrespondingDomDocumentFragment(viewDocumentFragment) {\n\t\t\treturn this._viewToDomMapping.get(viewDocumentFragment);\n\t\t}\n\n\t\t/**\n   * Gets corresponding text node. Text nodes are not {@link module:engine/view/domconverter~DomConverter#bindElements bound},\n   * corresponding text node is returned based on the sibling or parent.\n   *\n   * If the directly previous sibling is a {@link module:engine/view/domconverter~DomConverter#bindElements bound} element, it is used\n   * to find the corresponding text node.\n   *\n   * If this is a first child in the parent and the parent is a {@link module:engine/view/domconverter~DomConverter#bindElements bound}\n   * element, it is used to find the corresponding text node.\n   *\n   * Otherwise `null` is returned.\n   *\n   * @param {module:engine/view/text~Text} viewText View text node.\n   * @returns {Text|null} Corresponding DOM text node or `null`, if it was not possible to find a corresponding node.\n   */\n\n\t}, {\n\t\tkey: 'getCorrespondingDomText',\n\t\tvalue: function getCorrespondingDomText(viewText) {\n\t\t\tvar previousSibling = viewText.previousSibling;\n\n\t\t\t// Try to use previous sibling to find the corresponding text node.\n\t\t\tif (previousSibling && this.getCorrespondingDom(previousSibling)) {\n\t\t\t\treturn this.getCorrespondingDom(previousSibling).nextSibling;\n\t\t\t}\n\n\t\t\t// If this is a first node, try to use parent to find the corresponding text node.\n\t\t\tif (!previousSibling && viewText.parent && this.getCorrespondingDom(viewText.parent)) {\n\t\t\t\treturn this.getCorrespondingDom(viewText.parent).childNodes[0];\n\t\t\t}\n\n\t\t\treturn null;\n\t\t}\n\n\t\t/**\n   * Focuses DOM editable that is corresponding to provided {@link module:engine/view/editableelement~EditableElement EditableElement}.\n   *\n   * @param {module:engine/view/editableelement~EditableElement} viewEditable\n   */\n\n\t}, {\n\t\tkey: 'focus',\n\t\tvalue: function focus(viewEditable) {\n\t\t\tvar domEditable = this.getCorrespondingDomElement(viewEditable);\n\n\t\t\tif (domEditable && domEditable.ownerDocument.activeElement !== domEditable) {\n\t\t\t\tdomEditable.focus();\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Returns `true` when `node.nodeType` equals `Node.TEXT_NODE`.\n   *\n   * @param {Node} node Node to check.\n   * @returns {Boolean}\n   */\n\n\t}, {\n\t\tkey: 'isText',\n\t\tvalue: function isText(node) {\n\t\t\treturn node && node.nodeType == Node.TEXT_NODE;\n\t\t}\n\n\t\t/**\n   * Returns `true` when `node.nodeType` equals `Node.ELEMENT_NODE`.\n   *\n   * @param {Node} node Node to check.\n   * @returns {Boolean}\n   */\n\n\t}, {\n\t\tkey: 'isElement',\n\t\tvalue: function isElement(node) {\n\t\t\treturn node && node.nodeType == Node.ELEMENT_NODE;\n\t\t}\n\n\t\t/**\n   * Returns `true` when `node.nodeType` equals `Node.DOCUMENT_FRAGMENT_NODE`.\n   *\n   * @param {Node} node Node to check.\n   * @returns {Boolean}\n   */\n\n\t}, {\n\t\tkey: 'isDocumentFragment',\n\t\tvalue: function isDocumentFragment(node) {\n\t\t\treturn node && node.nodeType == Node.DOCUMENT_FRAGMENT_NODE;\n\t\t}\n\n\t\t/**\n   * Returns `true` if given selection is a backward selection, that is, if it's `focus` is before `anchor`.\n   *\n   * @param {Selection} DOM Selection instance to check.\n   * @returns {Boolean}\n   */\n\n\t}, {\n\t\tkey: 'isDomSelectionBackward',\n\t\tvalue: function isDomSelectionBackward(selection) {\n\t\t\tif (selection.isCollapsed) {\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\t// Since it takes multiple lines of code to check whether a \"DOM Position\" is before/after another \"DOM Position\",\n\t\t\t// we will use the fact that range will collapse if it's end is before it's start.\n\t\t\tvar range = new Range();\n\n\t\t\trange.setStart(selection.anchorNode, selection.anchorOffset);\n\t\t\trange.setEnd(selection.focusNode, selection.focusOffset);\n\n\t\t\tvar backward = range.collapsed;\n\n\t\t\trange.detach();\n\n\t\t\treturn backward;\n\t\t}\n\n\t\t/**\n   * Takes text data from given {@link module:engine/view/text~Text#data} and processes it so it is correctly displayed in DOM.\n   *\n   * Following changes are done:\n   * * multiple spaces are replaced to a chain of spaces and `&nbsp;`,\n   * * space at the beginning of the text node is changed to `&nbsp;` if it is a first text node in it's container\n   * element or if previous text node ends by space character,\n   * * space at the end of the text node is changed to `&nbsp;` if it is a last text node in it's container.\n   *\n   * @private\n   * @param {module:engine/view/text~Text} node View text node to process.\n   * @returns {String} Processed text data.\n   */\n\n\t}, {\n\t\tkey: '_processDataFromViewText',\n\t\tvalue: function _processDataFromViewText(node) {\n\t\t\tvar _this = this;\n\n\t\t\tvar data = node.data;\n\n\t\t\t// If any of node ancestors has a name which is in `preElements` array, then currently processed\n\t\t\t// view text node is (will be) in preformatted element. We should not change whitespaces then.\n\t\t\tif (node.getAncestors().some(function (parent) {\n\t\t\t\treturn _this.preElements.includes(parent.name);\n\t\t\t})) {\n\t\t\t\treturn data;\n\t\t\t}\n\n\t\t\tvar prevNode = this._getTouchingViewTextNode(node, false);\n\t\t\tvar nextNode = this._getTouchingViewTextNode(node, true);\n\n\t\t\t// Second part of text data, from the space after the last non-space character to the end.\n\t\t\t// We separate `textEnd` and `textStart` because `textEnd` needs some special handling.\n\t\t\tvar textEnd = data.match(/ *$/)[0];\n\t\t\t// First part of data, between first and last part of data.\n\t\t\tvar textStart = data.substr(0, data.length - textEnd.length);\n\n\t\t\t// If previous text node does not exist or it ends by space character, replace space character at the beginning of text.\n\t\t\t// ` x`\t\t\t-> `_x`\n\t\t\t// `  x`\t\t-> `_ x`\n\t\t\t// `   x`\t\t-> `_  x`\n\t\t\tif (!prevNode || prevNode.data.charAt(prevNode.data.length - 1) == ' ') {\n\t\t\t\ttextStart = textStart.replace(/^ /, '\\xA0');\n\t\t\t}\n\n\t\t\t// Multiple consecutive spaces. Change them to ` &nbsp;` pairs.\n\t\t\t// `_x  x`\t\t-> `_x _x`\n\t\t\t// `_ x  x`\t\t-> `_ x _x`\n\t\t\t// `_  x  x`\t-> `_ _x _x`\n\t\t\t// `_  x   x`\t-> `_ _x _ x`\n\t\t\t// `_  x    x`\t-> `_ _x _ _x`\n\t\t\t// `_   x    x` -> `_ _ x _ _x`\n\t\t\ttextStart = textStart.replace(/  /g, ' \\xA0');\n\n\t\t\t// Process `textEnd` only if there is anything to process.\n\t\t\tif (textEnd.length > 0) {\n\t\t\t\t// (1) We need special treatment for the last part of text node, it has to end on `&nbsp;`, not space:\n\t\t\t\t// `x `\t\t-> `x_`\n\t\t\t\t// `x  `\t-> `x _`\n\t\t\t\t// `x   `\t-> `x_ _`\n\t\t\t\t// `x    `\t-> `x _ _`\n\t\t\t\t// (2) Different case when there is a node after:\n\t\t\t\t// `x <b>b</b>`\t\t-> `x <b>b</b>`\n\t\t\t\t// `x  <b>b</b>`\t-> `x _<b>b</b>`\n\t\t\t\t// `x   <b>b</b>`\t-> `x _ <b>b</b>`\n\t\t\t\t// `x    <b>b</b>`\t-> `x _ _<b>b</b>`\n\t\t\t\t// (3) But different, when that node starts by &nbsp; (or space that will be converted to &nbsp;):\n\t\t\t\t// `x <b>_b</b>`\t-> `x <b>_b</b>`\n\t\t\t\t// `x  <b>_b</b>`\t-> `x_ <b>_b</b>`\n\t\t\t\t// `x   <b>_b</b>`\t-> `x _ <b>_b</b>`\n\t\t\t\t// `x    <b>_b</b>`\t-> `x_ _ <b>_b</b>`\n\t\t\t\t// Let's assume that starting from space is normal behavior, because starting from &nbsp; is a less frequent case.\n\t\t\t\tvar textEndStartsFromNbsp = false;\n\n\t\t\t\tif (!nextNode) {\n\t\t\t\t\t// (1)\n\t\t\t\t\tif (textEnd.length % 2) {\n\t\t\t\t\t\ttextEndStartsFromNbsp = true;\n\t\t\t\t\t}\n\t\t\t\t} else if (nextNode.data.charAt(0) == ' ' || nextNode.data.charAt(0) == '\\xA0') {\n\t\t\t\t\t// (3)\n\t\t\t\t\tif (textEnd.length % 2 === 0) {\n\t\t\t\t\t\ttextEndStartsFromNbsp = true;\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\tif (textEndStartsFromNbsp) {\n\t\t\t\t\ttextEnd = '\\xA0' + textEnd.substr(0, textEnd.length - 1);\n\t\t\t\t}\n\n\t\t\t\ttextEnd = textEnd.replace(/  /g, ' \\xA0');\n\t\t\t}\n\n\t\t\treturn textStart + textEnd;\n\t\t}\n\n\t\t/**\n   * Helper function. For given {@link module:engine/view/text~Text view text node}, it finds previous or next sibling that is contained\n   * in the same block element. If there is no such sibling, `null` is returned.\n   *\n   * @private\n   * @param {module:engine/view/text~Text} node\n   * @param {Boolean} getNext\n   * @returns {module:engine/view/text~Text}\n   */\n\n\t}, {\n\t\tkey: '_getTouchingViewTextNode',\n\t\tvalue: function _getTouchingViewTextNode(node, getNext) {\n\t\t\tif (!node.parent) {\n\t\t\t\treturn null;\n\t\t\t}\n\n\t\t\tvar treeWalker = new _treewalker2.default({\n\t\t\t\tstartPosition: getNext ? _position2.default.createAfter(node) : _position2.default.createBefore(node),\n\t\t\t\tdirection: getNext ? 'forward' : 'backward'\n\t\t\t});\n\n\t\t\tvar _iteratorNormalCompletion5 = true;\n\t\t\tvar _didIteratorError5 = false;\n\t\t\tvar _iteratorError5 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator5 = treeWalker[Symbol.iterator](), _step5; !(_iteratorNormalCompletion5 = (_step5 = _iterator5.next()).done); _iteratorNormalCompletion5 = true) {\n\t\t\t\t\tvar value = _step5.value;\n\n\t\t\t\t\tif (value.item.is('containerElement')) {\n\t\t\t\t\t\t// ViewContainerElement is found on a way to next ViewText node, so given `node` was first/last\n\t\t\t\t\t\t// text node in it's container element.\n\t\t\t\t\t\treturn null;\n\t\t\t\t\t} else if (value.item.is('text')) {\n\t\t\t\t\t\t// Found a text node in the same container element.\n\t\t\t\t\t\treturn value.item;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError5 = true;\n\t\t\t\t_iteratorError5 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion5 && _iterator5.return) {\n\t\t\t\t\t\t_iterator5.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError5) {\n\t\t\t\t\t\tthrow _iteratorError5;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn null;\n\t\t}\n\n\t\t/**\n   * Takes text data from native `Text` node and processes it to a correct {@link module:engine/view/text~Text view text node} data.\n   *\n   * Following changes are done:\n   * * multiple whitespaces are replaced to a single space,\n   * * space at the beginning of the text node is removed, if it is a first text node in it's container\n   * element or if previous text node ends by space character,\n   * * space at the end of the text node is removed, if it is a last text node in it's container.\n   *\n   * @param {Node} node DOM text node to process.\n   * @returns {String} Processed data.\n   * @private\n   */\n\n\t}, {\n\t\tkey: '_processDataFromDomText',\n\t\tvalue: function _processDataFromDomText(node) {\n\t\t\tvar data = (0, _filler.getDataWithoutFiller)(node);\n\n\t\t\tif (_hasDomParentOfType(node, this.preElements)) {\n\t\t\t\treturn data;\n\t\t\t}\n\n\t\t\t// Change all consecutive whitespace characters to a single space character. That's how multiple whitespaces\n\t\t\t// are treated when rendered, so we normalize those whitespaces.\n\t\t\t// Note that &nbsp; (`\\u00A0`) should not be treated as a whitespace because it is rendered.\n\t\t\tdata = data.replace(/[^\\S\\u00A0]{2,}/g, ' ');\n\n\t\t\tvar prevNode = this._getTouchingDomTextNode(node, false);\n\t\t\tvar nextNode = this._getTouchingDomTextNode(node, true);\n\n\t\t\t// If previous dom text node does not exist or it ends by whitespace character, remove space character from the beginning\n\t\t\t// of this text node. Such space character is treated as a whitespace.\n\t\t\tif (!prevNode || /[^\\S\\u00A0]/.test(prevNode.data.charAt(prevNode.data.length - 1))) {\n\t\t\t\tdata = data.replace(/^ /, '');\n\t\t\t}\n\n\t\t\t// If next text node does not exist remove space character from the end of this text node.\n\t\t\tif (!nextNode) {\n\t\t\t\tdata = data.replace(/ $/, '');\n\t\t\t}\n\t\t\t// At this point we should have removed all whitespaces from DOM text data.\n\n\t\t\t// Now we have to change &nbsp; chars, that were in DOM text data because of rendering reasons, to spaces.\n\t\t\t// First, change all ` \\u00A0` pairs (space + &nbsp;) to two spaces. DOM converter changes two spaces from model/view as\n\t\t\t// ` \\u00A0` to ensure proper rendering. Since here we convert back, we recognize those pairs and change them\n\t\t\t// to `  ` which is what we expect to have in model/view.\n\t\t\tdata = data.replace(/ \\u00A0/g, '  ');\n\t\t\t// Then, change &nbsp; character that is at the beginning of the text node to space character.\n\t\t\t// As above, that &nbsp; was created for rendering reasons but it's real meaning is just a space character.\n\t\t\t// We do that replacement only if this is the first node or the previous node ends on whitespace character.\n\t\t\tif (!prevNode || /[^\\S\\u00A0]/.test(prevNode.data.charAt(prevNode.data.length - 1))) {\n\t\t\t\tdata = data.replace(/^\\u00A0/, ' ');\n\t\t\t}\n\t\t\t// Since input text data could be: `x_ _`, we would not replace the first &nbsp; after `x` character.\n\t\t\t// We have to fix it. Since we already change all ` &nbsp;`, we will have something like this at the end of text data:\n\t\t\t// `x_ _ _` -> `x_    `. Find &nbsp; at the end of string (can be followed only by spaces).\n\t\t\t// We do that replacement only if this is the last node or the next node starts by &nbsp;.\n\t\t\tif (!nextNode || nextNode.data.charAt(0) == '\\xA0') {\n\t\t\t\tdata = data.replace(/\\u00A0( *)$/, ' $1');\n\t\t\t}\n\n\t\t\t// At this point, all whitespaces should be removed and all &nbsp; created for rendering reasons should be\n\t\t\t// changed to normal space. All left &nbsp; are &nbsp; inserted intentionally.\n\t\t\treturn data;\n\t\t}\n\n\t\t/**\n   * Helper function. For given `Text` node, it finds previous or next sibling that is contained in the same block element.\n   * If there is no such sibling, `null` is returned.\n   *\n   * @private\n   * @param {Text} node\n   * @param {Boolean} getNext\n   * @returns {Text|null}\n   */\n\n\t}, {\n\t\tkey: '_getTouchingDomTextNode',\n\t\tvalue: function _getTouchingDomTextNode(node, getNext) {\n\t\t\tif (!node.parentNode) {\n\t\t\t\treturn null;\n\t\t\t}\n\n\t\t\tvar direction = getNext ? 'nextNode' : 'previousNode';\n\t\t\tvar document = node.ownerDocument;\n\t\t\tvar treeWalker = document.createTreeWalker(document.childNodes[0], NodeFilter.SHOW_TEXT);\n\n\t\t\ttreeWalker.currentNode = node;\n\n\t\t\tvar touchingNode = treeWalker[direction]();\n\n\t\t\tif (touchingNode !== null) {\n\t\t\t\tvar lca = (0, _getcommonancestor2.default)(node, touchingNode);\n\n\t\t\t\t// If there is common ancestor between the text node and next/prev text node,\n\t\t\t\t// and there are no block elements on a way from the text node to that ancestor,\n\t\t\t\t// and there are no block elements on a way from next/prev text node to that ancestor...\n\t\t\t\tif (lca && !_hasDomParentOfType(node, this.blockElements, lca) && !_hasDomParentOfType(touchingNode, this.blockElements, lca)) {\n\t\t\t\t\t// Then they are in the same container element.\n\t\t\t\t\treturn touchingNode;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn null;\n\t\t}\n\t}]);\n\n\treturn DomConverter;\n}();\n\n// Helper function.\n// Used to check if given native `Element` or `Text` node has parent with tag name from `types` array.\n//\n// @param {Node} node\n// @param {Array.<String>} types\n// @param {Boolean} [boundaryParent] Can be given if parents should be checked up to a given element (excluding that element).\n// @returns {Boolean} `true` if such parent exists or `false` if it does not.\n\n\nexports.default = DomConverter;\nfunction _hasDomParentOfType(node, types, boundaryParent) {\n\tvar parents = (0, _getancestors2.default)(node);\n\n\tif (boundaryParent) {\n\t\tparents = parents.slice(parents.indexOf(boundaryParent) + 1);\n\t}\n\n\treturn parents.some(function (parent) {\n\t\treturn parent.tagName && types.includes(parent.tagName.toLowerCase());\n\t});\n}\n\n/***/ }),\n/* 168 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if (\"value\" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };\n\nvar _element = __webpack_require__(20);\n\nvar _element2 = _interopRequireDefault(_element);\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nvar _node = __webpack_require__(74);\n\nvar _node2 = _interopRequireDefault(_node);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module engine/view/emptyelement\n */\n\n/**\n * EmptyElement class. It is used to represent elements that cannot contain any child nodes.\n */\nvar EmptyElement = function (_Element) {\n\t_inherits(EmptyElement, _Element);\n\n\t/**\n  * Creates new instance of EmptyElement.\n  *\n  * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-emptyelement-cannot-add` when third parameter is passed,\n  * to inform that usage of EmptyElement is incorrect (adding child nodes to EmptyElement is forbidden).\n  *\n  * @param {String} name Node name.\n  * @param {Object|Iterable} [attributes] Collection of attributes.\n  */\n\tfunction EmptyElement(name, attributes, children) {\n\t\t_classCallCheck(this, EmptyElement);\n\n\t\t/**\n   * Returns `null` because filler is not needed for EmptyElements.\n   *\n   * @method #getFillerOffset\n   * @returns {null} Always returns null.\n   */\n\t\tvar _this = _possibleConstructorReturn(this, (EmptyElement.__proto__ || Object.getPrototypeOf(EmptyElement)).call(this, name, attributes, children));\n\n\t\t_this.getFillerOffset = getFillerOffset;\n\t\treturn _this;\n\t}\n\n\t/**\n  * @inheritDoc\n  */\n\n\n\t_createClass(EmptyElement, [{\n\t\tkey: 'is',\n\t\tvalue: function is(type) {\n\t\t\tvar name = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n\n\t\t\tif (!name) {\n\t\t\t\treturn type == 'emptyElement' || _get(EmptyElement.prototype.__proto__ || Object.getPrototypeOf(EmptyElement.prototype), 'is', this).call(this, type);\n\t\t\t} else {\n\t\t\t\treturn type == 'emptyElement' && name == this.name || _get(EmptyElement.prototype.__proto__ || Object.getPrototypeOf(EmptyElement.prototype), 'is', this).call(this, type, name);\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Overrides {@link module:engine/view/element~Element#insertChildren} method.\n   * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-emptyelement-cannot-add` to prevent adding any child nodes\n   * to EmptyElement.\n   */\n\n\t}, {\n\t\tkey: 'insertChildren',\n\t\tvalue: function insertChildren(index, nodes) {\n\t\t\tif (nodes && (nodes instanceof _node2.default || Array.from(nodes).length > 0)) {\n\t\t\t\t/**\n     * Cannot add children to {@link module:engine/view/emptyelement~EmptyElement}.\n     *\n     * @error view-emptyelement-cannot-add\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('view-emptyelement-cannot-add: Cannot add child nodes to EmptyElement instance.');\n\t\t\t}\n\t\t}\n\t}]);\n\n\treturn EmptyElement;\n}(_element2.default);\n\n// Returns `null` because block filler is not needed for EmptyElements.\n//\n// @returns {null}\n\n\nexports.default = EmptyElement;\nfunction getFillerOffset() {\n\treturn null;\n}\n\n/***/ }),\n/* 169 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if (\"value\" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };\n\nvar _observer = __webpack_require__(47);\n\nvar _observer2 = _interopRequireDefault(_observer);\n\nvar _selection = __webpack_require__(75);\n\nvar _selection2 = _interopRequireDefault(_selection);\n\nvar _filler = __webpack_require__(57);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module engine/view/observer/mutationobserver\n */\n\n/* globals window */\n\n/**\n * Mutation observer class observes changes in the DOM, fires {@link module:engine/view/document~Document#event:mutations} event, mark view\n * elements as changed and call {@link module:engine/view/renderer~Renderer#render}.\n * Because all mutated nodes are marked as \"to be rendered\" and the\n * {@link module:engine/view/renderer~Renderer#render} is called, all changes will be reverted, unless the mutation will be handled by the\n * {@link module:engine/view/document~Document#event:mutations} event listener. It means user will see only handled changes, and the editor\n * will block all changes which are not handled.\n *\n * Mutation Observer also take care of reducing number of mutations which are fired. It removes duplicates and\n * mutations on elements which do not have corresponding view elements. Also\n * {@link module:engine/view/observer/mutationobserver~MutatedText text mutation} is fired only if parent element do not change child list.\n *\n * Note that this observer is attached by the {@link module:engine/view/document~Document} and is available by default.\n *\n * @extends module:engine/view/observer/observer~Observer\n */\nvar MutationObserver = function (_Observer) {\n\t_inherits(MutationObserver, _Observer);\n\n\tfunction MutationObserver(document) {\n\t\t_classCallCheck(this, MutationObserver);\n\n\t\t/**\n   * Native mutation observer config.\n   *\n   * @private\n   * @member {Object}\n   */\n\t\tvar _this = _possibleConstructorReturn(this, (MutationObserver.__proto__ || Object.getPrototypeOf(MutationObserver)).call(this, document));\n\n\t\t_this._config = {\n\t\t\tchildList: true,\n\t\t\tcharacterData: true,\n\t\t\tcharacterDataOldValue: true,\n\t\t\tsubtree: true\n\t\t};\n\n\t\t/**\n   * Reference to the {@link module:engine/view/document~Document#domConverter}.\n   *\n   * @member {module:engine/view/domconverter~DomConverter}\n   */\n\t\t_this.domConverter = document.domConverter;\n\n\t\t/**\n   * Reference to the {@link module:engine/view/document~Document#renderer}.\n   *\n   * @member {module:engine/view/renderer~Renderer}\n   */\n\t\t_this.renderer = document.renderer;\n\n\t\t/**\n   * Observed DOM elements.\n   *\n   * @private\n   * @member {Array.<HTMLElement>}\n   */\n\t\t_this._domElements = [];\n\n\t\t/**\n   * Native mutation observer.\n   *\n   * @private\n   * @member {MutationObserver}\n   */\n\t\t_this._mutationObserver = new window.MutationObserver(_this._onMutations.bind(_this));\n\t\treturn _this;\n\t}\n\n\t/**\n  * Synchronously fires {@link module:engine/view/document~Document#event:mutations} event with all mutations in record queue.\n  * At the same time empties the queue so mutations will not be fired twice.\n  */\n\n\n\t_createClass(MutationObserver, [{\n\t\tkey: 'flush',\n\t\tvalue: function flush() {\n\t\t\tthis._onMutations(this._mutationObserver.takeRecords());\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: 'observe',\n\t\tvalue: function observe(domElement) {\n\t\t\tthis._domElements.push(domElement);\n\n\t\t\tif (this.isEnabled) {\n\t\t\t\tthis._mutationObserver.observe(domElement, this._config);\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: 'enable',\n\t\tvalue: function enable() {\n\t\t\t_get(MutationObserver.prototype.__proto__ || Object.getPrototypeOf(MutationObserver.prototype), 'enable', this).call(this);\n\n\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\tvar _didIteratorError = false;\n\t\t\tvar _iteratorError = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator = this._domElements[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\tvar domElement = _step.value;\n\n\t\t\t\t\tthis._mutationObserver.observe(domElement, this._config);\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError = true;\n\t\t\t\t_iteratorError = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: 'disable',\n\t\tvalue: function disable() {\n\t\t\t_get(MutationObserver.prototype.__proto__ || Object.getPrototypeOf(MutationObserver.prototype), 'disable', this).call(this);\n\n\t\t\tthis._mutationObserver.disconnect();\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: 'destroy',\n\t\tvalue: function destroy() {\n\t\t\t_get(MutationObserver.prototype.__proto__ || Object.getPrototypeOf(MutationObserver.prototype), 'destroy', this).call(this);\n\n\t\t\tthis._mutationObserver.disconnect();\n\t\t}\n\n\t\t/**\n   * Handles mutations. Deduplicates, mark view elements to sync, fire event and call render.\n   *\n   * @private\n   * @param {Array.<Object>} domMutations Array of native mutations.\n   */\n\n\t}, {\n\t\tkey: '_onMutations',\n\t\tvalue: function _onMutations(domMutations) {\n\t\t\t// As a result of this.flush() we can have an empty collection.\n\t\t\tif (domMutations.length === 0) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tvar domConverter = this.domConverter;\n\n\t\t\t// Use　map and set for deduplication.\n\t\t\tvar mutatedTexts = new Map();\n\t\t\tvar mutatedElements = new Set();\n\n\t\t\t// Handle `childList` mutations first, so we will be able to check if the `characterData` mutation is in the\n\t\t\t// element with changed structure anyway.\n\t\t\tvar _iteratorNormalCompletion2 = true;\n\t\t\tvar _didIteratorError2 = false;\n\t\t\tvar _iteratorError2 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator2 = domMutations[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {\n\t\t\t\t\tvar mutation = _step2.value;\n\n\t\t\t\t\tif (mutation.type === 'childList') {\n\t\t\t\t\t\tvar element = domConverter.getCorrespondingViewElement(mutation.target);\n\n\t\t\t\t\t\tif (element) {\n\t\t\t\t\t\t\tmutatedElements.add(element);\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\t// Handle `characterData` mutations later, when we have the full list of nodes which changed structure.\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError2 = true;\n\t\t\t\t_iteratorError2 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion2 && _iterator2.return) {\n\t\t\t\t\t\t_iterator2.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError2) {\n\t\t\t\t\t\tthrow _iteratorError2;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tvar _iteratorNormalCompletion3 = true;\n\t\t\tvar _didIteratorError3 = false;\n\t\t\tvar _iteratorError3 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator3 = domMutations[Symbol.iterator](), _step3; !(_iteratorNormalCompletion3 = (_step3 = _iterator3.next()).done); _iteratorNormalCompletion3 = true) {\n\t\t\t\t\tvar _mutation = _step3.value;\n\n\t\t\t\t\tif (_mutation.type === 'characterData') {\n\t\t\t\t\t\tvar text = domConverter.getCorrespondingViewText(_mutation.target);\n\n\t\t\t\t\t\tif (text && !mutatedElements.has(text.parent)) {\n\t\t\t\t\t\t\t// Use text as a key, for deduplication. If there will be another mutation on the same text element\n\t\t\t\t\t\t\t// we will have only one in the map.\n\t\t\t\t\t\t\tmutatedTexts.set(text, {\n\t\t\t\t\t\t\t\ttype: 'text',\n\t\t\t\t\t\t\t\toldText: text.data,\n\t\t\t\t\t\t\t\tnewText: (0, _filler.getDataWithoutFiller)(_mutation.target),\n\t\t\t\t\t\t\t\tnode: text\n\t\t\t\t\t\t\t});\n\t\t\t\t\t\t}\n\t\t\t\t\t\t// When we added first letter to the text node which had only inline filler, for the DOM it is mutation\n\t\t\t\t\t\t// on text, but for the view, where filler text node did not existed, new text node was created, so we\n\t\t\t\t\t\t// need to fire 'children' mutation instead of 'text'.\n\t\t\t\t\t\telse if (!text && (0, _filler.startsWithFiller)(_mutation.target)) {\n\t\t\t\t\t\t\t\tmutatedElements.add(domConverter.getCorrespondingViewElement(_mutation.target.parentNode));\n\t\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\t// Now we build the list of mutations to fire and mark elements. We did not do it earlier to avoid marking the\n\t\t\t\t// same node multiple times in case of duplication.\n\n\t\t\t\t// List of mutations we will fire.\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError3 = true;\n\t\t\t\t_iteratorError3 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion3 && _iterator3.return) {\n\t\t\t\t\t\t_iterator3.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError3) {\n\t\t\t\t\t\tthrow _iteratorError3;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tvar viewMutations = [];\n\n\t\t\tvar _iteratorNormalCompletion4 = true;\n\t\t\tvar _didIteratorError4 = false;\n\t\t\tvar _iteratorError4 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator4 = mutatedTexts.values()[Symbol.iterator](), _step4; !(_iteratorNormalCompletion4 = (_step4 = _iterator4.next()).done); _iteratorNormalCompletion4 = true) {\n\t\t\t\t\tvar mutatedText = _step4.value;\n\n\t\t\t\t\tthis.renderer.markToSync('text', mutatedText.node);\n\t\t\t\t\tviewMutations.push(mutatedText);\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError4 = true;\n\t\t\t\t_iteratorError4 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion4 && _iterator4.return) {\n\t\t\t\t\t\t_iterator4.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError4) {\n\t\t\t\t\t\tthrow _iteratorError4;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tvar _iteratorNormalCompletion5 = true;\n\t\t\tvar _didIteratorError5 = false;\n\t\t\tvar _iteratorError5 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator5 = mutatedElements[Symbol.iterator](), _step5; !(_iteratorNormalCompletion5 = (_step5 = _iterator5.next()).done); _iteratorNormalCompletion5 = true) {\n\t\t\t\t\tvar viewElement = _step5.value;\n\n\t\t\t\t\tvar domElement = domConverter.getCorrespondingDomElement(viewElement);\n\t\t\t\t\tvar viewChildren = viewElement.getChildren();\n\t\t\t\t\tvar newViewChildren = domConverter.domChildrenToView(domElement);\n\n\t\t\t\t\tthis.renderer.markToSync('children', viewElement);\n\t\t\t\t\tviewMutations.push({\n\t\t\t\t\t\ttype: 'children',\n\t\t\t\t\t\toldChildren: Array.from(viewChildren),\n\t\t\t\t\t\tnewChildren: Array.from(newViewChildren),\n\t\t\t\t\t\tnode: viewElement\n\t\t\t\t\t});\n\t\t\t\t}\n\n\t\t\t\t// Retrieve `domSelection` using `ownerDocument` of one of mutated nodes.\n\t\t\t\t// There should not be simultaneous mutation in multiple documents, so it's fine.\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError5 = true;\n\t\t\t\t_iteratorError5 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion5 && _iterator5.return) {\n\t\t\t\t\t\t_iterator5.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError5) {\n\t\t\t\t\t\tthrow _iteratorError5;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tvar domSelection = domMutations[0].target.ownerDocument.getSelection();\n\n\t\t\tvar viewSelection = null;\n\n\t\t\tif (domSelection && domSelection.anchorNode) {\n\t\t\t\t// If `domSelection` is inside a dom node that is already bound to a view node from view tree, get\n\t\t\t\t// corresponding selection in the view and pass it together with `viewMutations`. The `viewSelection` may\n\t\t\t\t// be used by features handling mutations.\n\t\t\t\t// Only one range is supported.\n\n\t\t\t\tvar viewSelectionAnchor = domConverter.domPositionToView(domSelection.anchorNode, domSelection.anchorOffset);\n\t\t\t\tvar viewSelectionFocus = domConverter.domPositionToView(domSelection.focusNode, domSelection.focusOffset);\n\n\t\t\t\t// Anchor and focus has to be properly mapped to view.\n\t\t\t\tif (viewSelectionAnchor && viewSelectionFocus) {\n\t\t\t\t\tviewSelection = new _selection2.default();\n\t\t\t\t\tviewSelection.collapse(viewSelectionAnchor);\n\t\t\t\t\tviewSelection.setFocus(viewSelectionFocus);\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tthis.document.fire('mutations', viewMutations, viewSelection);\n\n\t\t\t// If nothing changes on `mutations` event, at this point we have \"dirty DOM\" (changed) and de-synched\n\t\t\t// view (which has not been changed). In order to \"reset DOM\" we render the view again.\n\t\t\tthis.document.render();\n\t\t}\n\t}]);\n\n\treturn MutationObserver;\n}(_observer2.default);\n\n/**\n * Fired when mutation occurred. If tree view is not changed on this event, DOM will be reverter to the state before\n * mutation, so all changes which should be applied, should be handled on this event.\n *\n * Introduced by {@link module:engine/view/observer/mutationobserver~MutationObserver}.\n *\n * Note that because {@link module:engine/view/observer/mutationobserver~MutationObserver} is attached by the\n * {@link module:engine/view/document~Document}\n * this event is available by default.\n *\n * @see module:engine/view/observer/mutationobserver~MutationObserver\n * @event module:engine/view/document~Document#event:mutations\n * @param {Array.<module:engine/view/observer/mutationobserver~MutatedText|module:engine/view/observer/mutationobserver~MutatedChildren>}\n * viewMutations Array of mutations.\n * For mutated texts it will be {@link module:engine/view/observer/mutationobserver~MutatedText} and for mutated elements it will be\n * {@link module:engine/view/observer/mutationobserver~MutatedChildren}. You can recognize the type based on the `type` property.\n * @param {module:engine/view/selection~Selection|null} viewSelection View selection that is a result of converting DOM selection to view.\n * Keep in\n * mind that the DOM selection is already \"updated\", meaning that it already acknowledges changes done in mutation.\n */\n\n/**\n * Mutation item for text.\n *\n * @see module:engine/view/document~Document#event:mutations\n * @see module:engine/view/observer/mutationobserver~MutatedChildren\n *\n * @typedef {Object} module:engine/view/observer/mutationobserver~MutatedText\n *\n * @property {String} type For text mutations it is always 'text'.\n * @property {module:engine/view/text~Text} node Mutated text node.\n * @property {String} oldText Old text.\n * @property {String} newText New text.\n */\n\n/**\n * Mutation item for child nodes.\n *\n * @see module:engine/view/document~Document#event:mutations\n * @see module:engine/view/observer/mutationobserver~MutatedText\n *\n * @typedef {Object} module:engine/view/observer/mutationobserver~MutatedChildren\n *\n * @property {String} type For child nodes mutations it is always 'children'.\n * @property {module:engine/view/element~Element} node Parent of the mutated children.\n * @property {Array.<module:engine/view/node~Node>} oldChildren Old child nodes.\n * @property {Array.<module:engine/view/node~Node>} newChildren New child nodes.\n */\n\n\nexports.default = MutationObserver;\n\n/***/ }),\n/* 170 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if (\"value\" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };\n\nvar _editableelement = __webpack_require__(73);\n\nvar _editableelement2 = _interopRequireDefault(_editableelement);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module engine/view/rooteditableelement\n */\n\nvar rootNameSymbol = Symbol('rootName');\n\n/**\n * Class representing a single root in the data view. A root can be either {@link #isReadOnly editable or read-only}, but\n * in both cases it is called \"an editable\". Roots can contain other {@link module:engine/view/editableelement~EditableElement editable\n * elements}\n * making them \"nested editables\".\n *\n * @extends module:engine/view/editableelement~EditableElement\n */\n\nvar RootEditableElement = function (_EditableElement) {\n\t_inherits(RootEditableElement, _EditableElement);\n\n\t/**\n  * Creates root editable element.\n  *\n  * @param {module:engine/view/document~Document} document {@link module:engine/view/document~Document} that is an owner of the root.\n  * @param {String} name Node name.\n  */\n\tfunction RootEditableElement(name) {\n\t\t_classCallCheck(this, RootEditableElement);\n\n\t\t/**\n   * Name of this root inside {@link module:engine/view/document~Document} that is an owner of this root. If no\n   * other name is set, `main` name is used.\n   *\n   * @member {String}\n   */\n\t\tvar _this = _possibleConstructorReturn(this, (RootEditableElement.__proto__ || Object.getPrototypeOf(RootEditableElement)).call(this, name));\n\n\t\t_this.rootName = 'main';\n\t\treturn _this;\n\t}\n\n\t/**\n  * @inheritDoc\n  */\n\n\n\t_createClass(RootEditableElement, [{\n\t\tkey: 'is',\n\t\tvalue: function is(type) {\n\t\t\tvar name = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n\n\t\t\tif (!name) {\n\t\t\t\treturn type == 'rootElement' || _get(RootEditableElement.prototype.__proto__ || Object.getPrototypeOf(RootEditableElement.prototype), 'is', this).call(this, type);\n\t\t\t} else {\n\t\t\t\treturn type == 'rootElement' && name == this.name || _get(RootEditableElement.prototype.__proto__ || Object.getPrototypeOf(RootEditableElement.prototype), 'is', this).call(this, type, name);\n\t\t\t}\n\t\t}\n\t}, {\n\t\tkey: 'rootName',\n\t\tget: function get() {\n\t\t\treturn this.getCustomProperty(rootNameSymbol);\n\t\t},\n\t\tset: function set(rootName) {\n\t\t\tthis.setCustomProperty(rootNameSymbol, rootName);\n\t\t}\n\t}]);\n\n\treturn RootEditableElement;\n}(_editableelement2.default);\n\nexports.default = RootEditableElement;\n\n/***/ }),\n/* 171 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if (\"value\" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };\n\nvar _element = __webpack_require__(20);\n\nvar _element2 = _interopRequireDefault(_element);\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nvar _node = __webpack_require__(74);\n\nvar _node2 = _interopRequireDefault(_node);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module engine/view/uielement\n */\n\n/**\n * UIElement class. It is used to represent UI not a content of the document.\n * This element can't be split and selection can't be placed inside this element.\n */\nvar UIElement = function (_Element) {\n\t_inherits(UIElement, _Element);\n\n\t/**\n  * Creates new instance of UIElement.\n  *\n  * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-uielement-cannot-add` when third parameter is passed,\n  * to inform that usage of UIElement is incorrect (adding child nodes to UIElement is forbidden).\n  *\n  * @param {String} name Node name.\n  * @param {Object|Iterable} [attributes] Collection of attributes.\n  */\n\tfunction UIElement(name, attributes, children) {\n\t\t_classCallCheck(this, UIElement);\n\n\t\t/**\n   * Returns `null` because filler is not needed for UIElements.\n   *\n   * @method #getFillerOffset\n   * @returns {null} Always returns null.\n   */\n\t\tvar _this = _possibleConstructorReturn(this, (UIElement.__proto__ || Object.getPrototypeOf(UIElement)).call(this, name, attributes, children));\n\n\t\t_this.getFillerOffset = getFillerOffset;\n\t\treturn _this;\n\t}\n\n\t/**\n  * @inheritDoc\n  */\n\n\n\t_createClass(UIElement, [{\n\t\tkey: 'is',\n\t\tvalue: function is(type) {\n\t\t\tvar name = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n\n\t\t\tif (!name) {\n\t\t\t\treturn type == 'uiElement' || _get(UIElement.prototype.__proto__ || Object.getPrototypeOf(UIElement.prototype), 'is', this).call(this, type);\n\t\t\t} else {\n\t\t\t\treturn type == 'uiElement' && name == this.name || _get(UIElement.prototype.__proto__ || Object.getPrototypeOf(UIElement.prototype), 'is', this).call(this, type, name);\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Overrides {@link module:engine/view/element~Element#insertChildren} method.\n   * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-uielement-cannot-add` to prevent adding any child nodes\n   * to UIElement.\n   */\n\n\t}, {\n\t\tkey: 'insertChildren',\n\t\tvalue: function insertChildren(index, nodes) {\n\t\t\tif (nodes && (nodes instanceof _node2.default || Array.from(nodes).length > 0)) {\n\t\t\t\t/**\n     * Cannot add children to {@link module:engine/view/uielement~UIElement}.\n     *\n     * @error view-uielement-cannot-add\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('view-uielement-cannot-add: Cannot add child nodes to UIElement instance.');\n\t\t\t}\n\t\t}\n\t}]);\n\n\treturn UIElement;\n}(_element2.default);\n\n// Returns `null` because block filler is not needed for UIElements.\n//\n// @returns {null}\n\n\nexports.default = UIElement;\nfunction getFillerOffset() {\n\treturn null;\n}\n\n/***/ }),\n/* 172 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _plugin = __webpack_require__(2);\n\nvar _plugin2 = _interopRequireDefault(_plugin);\n\nvar _buildmodelconverter = __webpack_require__(45);\n\nvar _buildmodelconverter2 = _interopRequireDefault(_buildmodelconverter);\n\nvar _buildviewconverter = __webpack_require__(46);\n\nvar _buildviewconverter2 = _interopRequireDefault(_buildviewconverter);\n\nvar _paragraph = __webpack_require__(181);\n\nvar _paragraph2 = _interopRequireDefault(_paragraph);\n\nvar _headingcommand = __webpack_require__(333);\n\nvar _headingcommand2 = _interopRequireDefault(_headingcommand);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module heading/headingengine\n */\n\nvar defaultOptionId = 'paragraph';\n\n/**\n * The headings engine feature. It handles switching between block formats &ndash; headings and paragraph.\n * This class represents the engine part of the heading feature. See also {@link module:heading/heading~Heading}.\n *\n * @extends modules:core/plugin~Plugin\n */\n\nvar HeadingEngine = function (_Plugin) {\n\t_inherits(HeadingEngine, _Plugin);\n\n\t/**\n  * @inheritDoc\n  */\n\tfunction HeadingEngine(editor) {\n\t\t_classCallCheck(this, HeadingEngine);\n\n\t\tvar _this = _possibleConstructorReturn(this, (HeadingEngine.__proto__ || Object.getPrototypeOf(HeadingEngine)).call(this, editor));\n\n\t\teditor.config.define('heading', {\n\t\t\toptions: [{ id: 'paragraph', element: 'p', label: 'Paragraph' }, { id: 'heading1', element: 'h2', label: 'Heading 1' }, { id: 'heading2', element: 'h3', label: 'Heading 2' }, { id: 'heading3', element: 'h4', label: 'Heading 3' }]\n\t\t});\n\t\treturn _this;\n\t}\n\n\t/**\n  * @inheritDoc\n  */\n\n\n\t_createClass(HeadingEngine, [{\n\t\tkey: 'init',\n\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tvalue: function init() {\n\t\t\tvar editor = this.editor;\n\t\t\tvar data = editor.data;\n\t\t\tvar editing = editor.editing;\n\t\t\tvar options = this._getLocalizedOptions();\n\n\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\tvar _didIteratorError = false;\n\t\t\tvar _iteratorError = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator = options[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\tvar option = _step.value;\n\n\t\t\t\t\t// Skip paragraph - it is defined in required Paragraph feature.\n\t\t\t\t\tif (option.id !== defaultOptionId) {\n\t\t\t\t\t\t// Schema.\n\t\t\t\t\t\teditor.document.schema.registerItem(option.id, '$block');\n\n\t\t\t\t\t\t// Build converter from model to view for data and editing pipelines.\n\t\t\t\t\t\t(0, _buildmodelconverter2.default)().for(data.modelToView, editing.modelToView).fromElement(option.id).toElement(option.element);\n\n\t\t\t\t\t\t// Build converter from view to model for data pipeline.\n\t\t\t\t\t\t(0, _buildviewconverter2.default)().for(data.viewToModel).fromElement(option.element).toElement(option.id);\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\t// Register the heading command.\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError = true;\n\t\t\t\t_iteratorError = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tvar command = new _headingcommand2.default(editor, options, defaultOptionId);\n\t\t\teditor.commands.set('heading', command);\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: 'afterInit',\n\t\tvalue: function afterInit() {\n\t\t\t// If the enter command is added to the editor, alter its behavior.\n\t\t\t// Enter at the end of a heading element should create a paragraph.\n\t\t\tvar editor = this.editor;\n\t\t\tvar command = editor.commands.get('heading');\n\t\t\tvar enterCommand = editor.commands.get('enter');\n\t\t\tvar options = this._getLocalizedOptions();\n\n\t\t\tif (enterCommand) {\n\t\t\t\tthis.listenTo(enterCommand, 'afterExecute', function (evt, data) {\n\t\t\t\t\tvar positionParent = editor.document.selection.getFirstPosition().parent;\n\t\t\t\t\tvar batch = data.batch;\n\t\t\t\t\tvar isHeading = options.some(function (option) {\n\t\t\t\t\t\treturn option.id == positionParent.name;\n\t\t\t\t\t});\n\n\t\t\t\t\tif (isHeading && positionParent.name != command.defaultOption.id && positionParent.childCount === 0) {\n\t\t\t\t\t\tbatch.rename(positionParent, command.defaultOption.id);\n\t\t\t\t\t}\n\t\t\t\t});\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Returns heading options as defined in `config.heading.options` but processed to consider\n   * editor localization, i.e. to display {@link module:heading/headingcommand~HeadingOption#label}\n   * in the correct language.\n   *\n   * Note: The reason behind this method is that there's no way to use {@link utils/locale~Locale#t}\n   * when the user config is defined because the editor does not exist yet.\n   *\n   * @private\n   * @returns {Array.<module:heading/headingcommand~HeadingOption>}.\n   */\n\n\t}, {\n\t\tkey: '_getLocalizedOptions',\n\t\tvalue: function _getLocalizedOptions() {\n\t\t\tif (this._cachedLocalizedOptions) {\n\t\t\t\treturn this._cachedLocalizedOptions;\n\t\t\t}\n\n\t\t\tvar editor = this.editor;\n\t\t\tvar t = editor.t;\n\t\t\tvar localizedLabels = {\n\t\t\t\tParagraph: t('Paragraph'),\n\t\t\t\t'Heading 1': t('Heading 1'),\n\t\t\t\t'Heading 2': t('Heading 2'),\n\t\t\t\t'Heading 3': t('Heading 3')\n\t\t\t};\n\n\t\t\t/**\n    * Cached localized version of `config.heading.options` generated by\n    * {@link module:heading/headingengine~HeadingEngine#_localizedOptions}.\n    *\n    * @private\n    * @readonly\n    * @member {Array.<module:heading/headingcommand~HeadingOption>} #_cachedLocalizedOptions\n    */\n\t\t\tthis._cachedLocalizedOptions = editor.config.get('heading.options').map(function (option) {\n\t\t\t\tif (localizedLabels[option.label]) {\n\t\t\t\t\t// Clone the option to avoid altering the original `config.heading.options`.\n\t\t\t\t\toption = Object.assign({}, option, {\n\t\t\t\t\t\tlabel: localizedLabels[option.label]\n\t\t\t\t\t});\n\t\t\t\t}\n\n\t\t\t\treturn option;\n\t\t\t});\n\n\t\t\treturn this._cachedLocalizedOptions;\n\t\t}\n\t}], [{\n\t\tkey: 'requires',\n\t\tget: function get() {\n\t\t\treturn [_paragraph2.default];\n\t\t}\n\t}]);\n\n\treturn HeadingEngine;\n}(_plugin2.default);\n\nexports.default = HeadingEngine;\n\n/***/ }),\n/* 173 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nexports.createImageViewElement = createImageViewElement;\n\nvar _plugin = __webpack_require__(2);\n\nvar _plugin2 = _interopRequireDefault(_plugin);\n\nvar _buildmodelconverter = __webpack_require__(45);\n\nvar _buildmodelconverter2 = _interopRequireDefault(_buildmodelconverter);\n\nvar _widgetengine = __webpack_require__(176);\n\nvar _widgetengine2 = _interopRequireDefault(_widgetengine);\n\nvar _converters = __webpack_require__(335);\n\nvar _utils = __webpack_require__(40);\n\nvar _containerelement = __webpack_require__(39);\n\nvar _containerelement2 = _interopRequireDefault(_containerelement);\n\nvar _emptyelement = __webpack_require__(168);\n\nvar _emptyelement2 = _interopRequireDefault(_emptyelement);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module image/image/imageengine\n */\n\n/**\n * The image engine plugin.\n * Registers `image` as a block element in document's schema and allows it to have two attributes: `src` and `alt`.\n * Registers converters for editing and data pipelines.\n *\n * @extends module:core/plugin~Plugin\n */\nvar ImageEngine = function (_Plugin) {\n\t_inherits(ImageEngine, _Plugin);\n\n\tfunction ImageEngine() {\n\t\t_classCallCheck(this, ImageEngine);\n\n\t\treturn _possibleConstructorReturn(this, (ImageEngine.__proto__ || Object.getPrototypeOf(ImageEngine)).apply(this, arguments));\n\t}\n\n\t_createClass(ImageEngine, [{\n\t\tkey: 'init',\n\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tvalue: function init() {\n\t\t\tvar editor = this.editor;\n\t\t\tvar doc = editor.document;\n\t\t\tvar schema = doc.schema;\n\t\t\tvar data = editor.data;\n\t\t\tvar editing = editor.editing;\n\t\t\tvar t = editor.t;\n\n\t\t\t// Configure schema.\n\t\t\tschema.registerItem('image');\n\t\t\tschema.requireAttributes('image', ['src']);\n\t\t\tschema.allow({ name: 'image', attributes: ['alt', 'src'], inside: '$root' });\n\t\t\tschema.objects.add('image');\n\n\t\t\t// Build converter from model to view for data pipeline.\n\t\t\t(0, _buildmodelconverter2.default)().for(data.modelToView).fromElement('image').toElement(function () {\n\t\t\t\treturn createImageViewElement();\n\t\t\t});\n\n\t\t\t// Build converter from model to view for editing pipeline.\n\t\t\t(0, _buildmodelconverter2.default)().for(editing.modelToView).fromElement('image').toElement(function () {\n\t\t\t\treturn (0, _utils.toImageWidget)(createImageViewElement(), t('image widget'));\n\t\t\t});\n\n\t\t\t(0, _converters.createImageAttributeConverter)([editing.modelToView, data.modelToView], 'src');\n\t\t\t(0, _converters.createImageAttributeConverter)([editing.modelToView, data.modelToView], 'alt');\n\n\t\t\t// Converter for figure element from view to model.\n\t\t\tdata.viewToModel.on('element:figure', (0, _converters.viewToModelImage)());\n\t\t}\n\t}], [{\n\t\tkey: 'requires',\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tget: function get() {\n\t\t\treturn [_widgetengine2.default];\n\t\t}\n\t}]);\n\n\treturn ImageEngine;\n}(_plugin2.default);\n\n// Creates view element representing the image.\n//\n//\t\t<figure class=\"image\"><img></img></figure>\n//\n// Note that `alt` and `src` attributes are converted separately, so they're not included.\n//\n// @private\n// @return {module:engine/view/containerelement~ContainerElement}\n\n\nexports.default = ImageEngine;\nfunction createImageViewElement() {\n\treturn new _containerelement2.default('figure', { class: 'image' }, new _emptyelement2.default('img'));\n}\n\n/***/ }),\n/* 174 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if (\"value\" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };\n\nvar _throttle = __webpack_require__(495);\n\nvar _throttle2 = _interopRequireDefault(_throttle);\n\nvar _global = __webpack_require__(59);\n\nvar _global2 = _interopRequireDefault(_global);\n\nvar _balloonpanelview = __webpack_require__(183);\n\nvar _balloonpanelview2 = _interopRequireDefault(_balloonpanelview);\n\nvar _utils = __webpack_require__(40);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module image/image/ui/imageballoonpanel\n */\n\nvar arrowVOffset = _balloonpanelview2.default.arrowVerticalOffset;\nvar positions = {\n\t//\t   [text range]\n\t//\t        ^\n\t//\t+-----------------+\n\t//\t|     Balloon     |\n\t//\t+-----------------+\n\tsouth: function south(targetRect, balloonRect) {\n\t\treturn {\n\t\t\ttop: targetRect.bottom + arrowVOffset,\n\t\t\tleft: targetRect.left + targetRect.width / 2 - balloonRect.width / 2,\n\t\t\tname: 's'\n\t\t};\n\t},\n\n\n\t//\t+-----------------+\n\t//\t|     Balloon     |\n\t//\t+-----------------+\n\t//\t        V\n\t//\t   [text range]\n\tnorth: function north(targetRect, balloonRect) {\n\t\treturn {\n\t\t\ttop: targetRect.top - balloonRect.height - arrowVOffset,\n\t\t\tleft: targetRect.left + targetRect.width / 2 - balloonRect.width / 2,\n\t\t\tname: 'n'\n\t\t};\n\t}\n};\n\n/**\n * Image balloon panel class. It extends {module:ui/balloonpanel/balloonpanelview~BalloonPanelView} by adding helpers\n * to use with image widgets. It sets proper positioning on `scroll` and `resize` events and hides the panel when\n * image is no longer selected or focus is lost.\n *\n * @extends module:ui/balloonpanel/balloonpanelview~BalloonPanelView\n */\n\nvar ImageBalloonPanelView = function (_BalloonPanelView) {\n\t_inherits(ImageBalloonPanelView, _BalloonPanelView);\n\n\t/**\n  * @inheritDoc\n  */\n\tfunction ImageBalloonPanelView(editor) {\n\t\t_classCallCheck(this, ImageBalloonPanelView);\n\n\t\tvar _this = _possibleConstructorReturn(this, (ImageBalloonPanelView.__proto__ || Object.getPrototypeOf(ImageBalloonPanelView)).call(this, editor.locale));\n\n\t\t_this.editor = editor;\n\t\tvar editingView = editor.editing.view;\n\n\t\t// Hide the balloon if editor had focus and now focus is lost.\n\t\t_this.listenTo(editor.ui.focusTracker, 'change:isFocused', function (evt, name, is, was) {\n\t\t\tif (was && !is) {\n\t\t\t\t_this.detach();\n\t\t\t}\n\t\t});\n\n\t\t// Hide the balloon if no image is currently selected.\n\t\teditor.listenTo(editingView, 'render', function () {\n\t\t\tvar selectedElement = editingView.selection.getSelectedElement();\n\n\t\t\tif (!selectedElement || !(0, _utils.isImageWidget)(selectedElement)) {\n\t\t\t\t_this.detach();\n\t\t\t}\n\t\t}, { priority: 'low' });\n\n\t\t/**\n   * Wraps {@link #_attach} method with throttle function that will fire it not more than every 100ms.\n   * It is used as `scroll` and `resize` callback.\n   *\n   * @private\n   * @member {Function} #_throttledAttach\n   */\n\t\t_this._throttledAttach = (0, _throttle2.default)(function () {\n\t\t\t_this._attach();\n\t\t}, 100);\n\t\treturn _this;\n\t}\n\n\t/**\n  * @inheritDoc\n  */\n\n\n\t_createClass(ImageBalloonPanelView, [{\n\t\tkey: 'init',\n\t\tvalue: function init() {\n\t\t\t// Let the focusTracker know about new focusable UI element.\n\t\t\tthis.editor.ui.focusTracker.add(this.element);\n\n\t\t\treturn _get(ImageBalloonPanelView.prototype.__proto__ || Object.getPrototypeOf(ImageBalloonPanelView.prototype), 'init', this).call(this);\n\t\t}\n\n\t\t/**\n   * Attaches the panel and enables `scroll` and `resize` listeners.\n   */\n\n\t}, {\n\t\tkey: 'attach',\n\t\tvalue: function attach() {\n\t\t\tthis._attach();\n\t\t\tthis.editor.ui.view.listenTo(_global2.default.window, 'scroll', this._throttledAttach);\n\t\t\tthis.editor.ui.view.listenTo(_global2.default.window, 'resize', this._throttledAttach);\n\t\t}\n\n\t\t/**\n   * Detaches the panel and disables `scroll` and `resize` listeners.\n   */\n\n\t}, {\n\t\tkey: 'detach',\n\t\tvalue: function detach() {\n\t\t\tthis.hide();\n\t\t\tthis.editor.ui.view.stopListening(_global2.default.window, 'scroll', this._throttledAttach);\n\t\t\tthis.editor.ui.view.stopListening(_global2.default.window, 'resize', this._throttledAttach);\n\t\t}\n\n\t\t/**\n   * Attaches the panel to the first selection range.\n   *\n   * @private\n   */\n\n\t}, {\n\t\tkey: '_attach',\n\t\tvalue: function _attach() {\n\t\t\tvar editingView = this.editor.editing.view;\n\n\t\t\tthis.attachTo({\n\t\t\t\ttarget: editingView.domConverter.viewRangeToDom(editingView.selection.getFirstRange()),\n\t\t\t\tpositions: [positions.north, positions.south]\n\t\t\t});\n\t\t}\n\t}]);\n\n\treturn ImageBalloonPanelView;\n}(_balloonpanelview2.default);\n\nexports.default = ImageBalloonPanelView;\n\n/***/ }),\n/* 175 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _template = __webpack_require__(6);\n\nvar _template2 = _interopRequireDefault(_template);\n\nvar _plugin = __webpack_require__(2);\n\nvar _plugin2 = _interopRequireDefault(_plugin);\n\nvar _toolbarview = __webpack_require__(188);\n\nvar _toolbarview2 = _interopRequireDefault(_toolbarview);\n\nvar _utils = __webpack_require__(40);\n\nvar _imageballoonpanelview = __webpack_require__(174);\n\nvar _imageballoonpanelview2 = _interopRequireDefault(_imageballoonpanelview);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module image/imagetoolbar\n */\n\n/**\n * Image toolbar class. Creates image toolbar placed inside balloon panel that is showed when image widget is selected.\n * Toolbar components are created using editor's {@link module:ui/componentfactory~ComponentFactory ComponentFactory}\n * based on {@link module:core/editor/editor~Editor#config configuration} stored under `image.toolbar`.\n * Other plugins can add new components to the default toolbar configuration by pushing them to `image.defaultToolbar`\n * configuration. Default configuration is used when `image.toolbar` config is not present.\n *\n * @extends module:core/plugin~Plugin\n */\nvar ImageToolbar = function (_Plugin) {\n\t_inherits(ImageToolbar, _Plugin);\n\n\t/**\n  * @inheritDoc\n  */\n\tfunction ImageToolbar(editor) {\n\t\t_classCallCheck(this, ImageToolbar);\n\n\t\tvar _this = _possibleConstructorReturn(this, (ImageToolbar.__proto__ || Object.getPrototypeOf(ImageToolbar)).call(this, editor));\n\n\t\teditor.config.set('image.defaultToolbar', []);\n\n\t\t/**\n   * When set to `true`, toolbar will be repositioned and showed on each render event and focus change.\n   * Set to `false` to temporary disable the image toolbar.\n   *\n   * @member {Boolean}\n   */\n\t\t_this.isEnabled = true;\n\t\treturn _this;\n\t}\n\n\t/**\n  * @inheritDoc\n  */\n\n\n\t_createClass(ImageToolbar, [{\n\t\tkey: 'afterInit',\n\t\tvalue: function afterInit() {\n\t\t\tvar _this2 = this;\n\n\t\t\tvar editor = this.editor;\n\t\t\tvar toolbarConfig = editor.config.get('image.toolbar') || editor.config.get('image.defaultToolbar');\n\n\t\t\t// Don't add the toolbar if there is no configuration.\n\t\t\tif (!toolbarConfig.length) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tvar panel = this._panel = new _imageballoonpanelview2.default(editor);\n\t\t\tvar promises = [];\n\t\t\tvar toolbar = new _toolbarview2.default();\n\n\t\t\t// Add CSS class to the panel.\n\t\t\t_template2.default.extend(panel.template, {\n\t\t\t\tattributes: {\n\t\t\t\t\tclass: ['ck-toolbar__container']\n\t\t\t\t}\n\t\t\t});\n\n\t\t\t// Add toolbar to balloon panel.\n\t\t\tpromises.push(panel.content.add(toolbar));\n\n\t\t\t// Add buttons to the toolbar.\n\t\t\tpromises.push(toolbar.fillFromConfig(toolbarConfig, editor.ui.componentFactory));\n\n\t\t\t// Add balloon panel to editor's UI.\n\t\t\tpromises.push(editor.ui.view.body.add(panel));\n\n\t\t\t// Show balloon panel each time image widget is selected.\n\t\t\tthis.listenTo(this.editor.editing.view, 'render', function () {\n\t\t\t\tif (_this2.isEnabled) {\n\t\t\t\t\t_this2.show();\n\t\t\t\t}\n\t\t\t}, { priority: 'low' });\n\n\t\t\t// There is no render method after focus is back in editor, we need to check if balloon panel should be visible.\n\t\t\tthis.listenTo(editor.ui.focusTracker, 'change:isFocused', function (evt, name, is, was) {\n\t\t\t\tif (!was && is && _this2.isEnabled) {\n\t\t\t\t\t_this2.show();\n\t\t\t\t}\n\t\t\t});\n\n\t\t\treturn Promise.all(promises);\n\t\t}\n\n\t\t/**\n   * Shows the toolbar.\n   */\n\n\t}, {\n\t\tkey: 'show',\n\t\tvalue: function show() {\n\t\t\tvar selectedElement = this.editor.editing.view.selection.getSelectedElement();\n\n\t\t\tif (selectedElement && (0, _utils.isImageWidget)(selectedElement)) {\n\t\t\t\tthis._panel.attach();\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Hides the toolbar.\n   */\n\n\t}, {\n\t\tkey: 'hide',\n\t\tvalue: function hide() {\n\t\t\tthis._panel.detach();\n\t\t}\n\t}]);\n\n\treturn ImageToolbar;\n}(_plugin2.default);\n\nexports.default = ImageToolbar;\n\n/***/ }),\n/* 176 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _plugin = __webpack_require__(2);\n\nvar _plugin2 = _interopRequireDefault(_plugin);\n\nvar _utils = __webpack_require__(119);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module image/widget/widgetengine\n */\n\n/**\n * The widget engine plugin.\n * Registers model to view selection converter for editing pipeline. It is hooked after default selection conversion.\n * If converted selection is placed around widget element, selection is marked as fake. Additionally, proper CSS class\n * is added to indicate that widget has been selected.\n *\n * @extends module:core/plugin~Plugin.\n */\nvar WidgetEngine = function (_Plugin) {\n\t_inherits(WidgetEngine, _Plugin);\n\n\tfunction WidgetEngine() {\n\t\t_classCallCheck(this, WidgetEngine);\n\n\t\treturn _possibleConstructorReturn(this, (WidgetEngine.__proto__ || Object.getPrototypeOf(WidgetEngine)).apply(this, arguments));\n\t}\n\n\t_createClass(WidgetEngine, [{\n\t\tkey: 'init',\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tvalue: function init() {\n\t\t\tvar previouslySelected = void 0;\n\n\t\t\t// Model to view selection converter.\n\t\t\t// Converts selection placed over widget element to fake selection\n\t\t\tthis.editor.editing.modelToView.on('selection', function (evt, data, consumable, conversionApi) {\n\t\t\t\t// Remove selected class from previously selected widget.\n\t\t\t\tif (previouslySelected && previouslySelected.hasClass(_utils.WIDGET_SELECTED_CLASS_NAME)) {\n\t\t\t\t\tpreviouslySelected.removeClass(_utils.WIDGET_SELECTED_CLASS_NAME);\n\t\t\t\t}\n\n\t\t\t\tvar viewSelection = conversionApi.viewSelection;\n\n\t\t\t\t// Check if widget was clicked or some sub-element.\n\t\t\t\tvar selectedElement = viewSelection.getSelectedElement();\n\n\t\t\t\tif (!selectedElement || !(0, _utils.isWidget)(selectedElement)) {\n\t\t\t\t\treturn;\n\t\t\t\t}\n\n\t\t\t\tviewSelection.setFake(true, { label: (0, _utils.getLabel)(selectedElement) });\n\t\t\t\tselectedElement.addClass(_utils.WIDGET_SELECTED_CLASS_NAME);\n\t\t\t\tpreviouslySelected = selectedElement;\n\t\t\t}, { priority: 'low' });\n\t\t}\n\t}]);\n\n\treturn WidgetEngine;\n}(_plugin2.default);\n\nexports.default = WidgetEngine;\n\n/***/ }),\n/* 177 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = findLinkRange;\n\nvar _range = __webpack_require__(3);\n\nvar _range2 = _interopRequireDefault(_range);\n\nvar _position = __webpack_require__(1);\n\nvar _position2 = _interopRequireDefault(_position);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Walk backward and forward from start position, node by node as long as they have the same `linkHref` attribute value and return\n * {@link module:engine/model/range~Range Range} with found link.\n *\n * @param {module:engine/model/position~Position} position Start position.\n * @param {String} value `linkHref` attribute value.\n * @returns {module:engine/model/range~Range} Link range.\n */\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module link/findlinkrange\n */\n\nfunction findLinkRange(position, value) {\n  return new _range2.default(_findBound(position, value, true), _findBound(position, value, false));\n}\n\n// Walk forward or backward (depends on `lookBack` flag), node by node as long as they have the same `linkHref` attribute value\n// and return position just before or after (depends on `lookBack` flag) last matched node.\n//\n// @param {module:engine/model/position~Position} position Start position.\n// @param {String} value `linkHref` attribute value.\n// @param {Boolean} lookBack Whether walk direction is forward `false` or backward `true`.\n// @returns {module:engine/model/position~Position} Position just before last matched node.\nfunction _findBound(position, value, lookBack) {\n  // Get node before or after position (depends on `lookBack` flag).\n  // When position is inside text node then start searching from text node.\n  var node = position.textNode || (lookBack ? position.nodeBefore : position.nodeAfter);\n\n  var lastNode = null;\n\n  while (node && node.getAttribute('linkHref') == value) {\n    lastNode = node;\n    node = lookBack ? node.previousSibling : node.nextSibling;\n  }\n\n  return lastNode ? _position2.default.createAt(lastNode, lookBack ? 'before' : 'after') : position;\n}\n\n/***/ }),\n/* 178 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _attributeelement = __webpack_require__(115);\n\nvar _attributeelement2 = _interopRequireDefault(_attributeelement);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module link/linkelement\n */\n\n/**\n * This class is to mark specific {@link module:engine/view/node~Node} as {@link module:link/linkelement~LinkElement}.\n * E.g. There could be a situation when different features will create nodes with the same names,\n * and hence they must be identified somehow.\n *\n * @extends module:engine/view/attributelement~AttributeElement\n */\nvar LinkElement = function (_AttributeElement) {\n  _inherits(LinkElement, _AttributeElement);\n\n  function LinkElement() {\n    _classCallCheck(this, LinkElement);\n\n    return _possibleConstructorReturn(this, (LinkElement.__proto__ || Object.getPrototypeOf(LinkElement)).apply(this, arguments));\n  }\n\n  return LinkElement;\n}(_attributeelement2.default);\n\nexports.default = LinkElement;\n\n/***/ }),\n/* 179 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _plugin = __webpack_require__(2);\n\nvar _plugin2 = _interopRequireDefault(_plugin);\n\nvar _listcommand = __webpack_require__(356);\n\nvar _listcommand2 = _interopRequireDefault(_listcommand);\n\nvar _indentcommand = __webpack_require__(354);\n\nvar _indentcommand2 = _interopRequireDefault(_indentcommand);\n\nvar _converters = __webpack_require__(353);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module list/listengine\n */\n\n/**\n * The engine of the lists feature. It handles creating, editing and removing lists and list items.\n * It registers the `numberedList`, `bulletedList`, `indentList` and `outdentList` commands.\n *\n * @extends module:core/plugin~Plugin\n */\nvar ListEngine = function (_Plugin) {\n\t_inherits(ListEngine, _Plugin);\n\n\tfunction ListEngine() {\n\t\t_classCallCheck(this, ListEngine);\n\n\t\treturn _possibleConstructorReturn(this, (ListEngine.__proto__ || Object.getPrototypeOf(ListEngine)).apply(this, arguments));\n\t}\n\n\t_createClass(ListEngine, [{\n\t\tkey: 'init',\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tvalue: function init() {\n\t\t\tvar editor = this.editor;\n\n\t\t\t// Schema.\n\t\t\tvar schema = editor.document.schema;\n\t\t\tschema.registerItem('listItem', '$block');\n\t\t\tschema.allow({\n\t\t\t\tname: 'listItem',\n\t\t\t\tinside: '$root',\n\t\t\t\tattributes: ['type', 'indent']\n\t\t\t});\n\t\t\tschema.requireAttributes('listItem', ['type', 'indent']);\n\n\t\t\t// Converters.\n\t\t\tvar data = editor.data;\n\t\t\tvar editing = editor.editing;\n\n\t\t\tediting.mapper.on('modelToViewPosition', _converters.modelToViewPosition);\n\t\t\tediting.mapper.on('viewToModelPosition', _converters.viewToModelPosition);\n\t\t\tdata.mapper.on('modelToViewPosition', _converters.modelToViewPosition);\n\n\t\t\tediting.modelToView.on('insert', _converters.modelViewSplitOnInsert, { priority: 'high' });\n\t\t\tediting.modelToView.on('insert:listItem', _converters.modelViewInsertion);\n\t\t\tdata.modelToView.on('insert', _converters.modelViewSplitOnInsert, { priority: 'high' });\n\t\t\tdata.modelToView.on('insert:listItem', _converters.modelViewInsertion);\n\n\t\t\t// Only change converter is needed. List item's type attribute is required, so it's adding is handled when\n\t\t\t// list item is added and you cannot remove it.\n\t\t\tediting.modelToView.on('changeAttribute:type:listItem', _converters.modelViewChangeType);\n\t\t\tdata.modelToView.on('changeAttribute:type:listItem', _converters.modelViewChangeType);\n\n\t\t\tediting.modelToView.on('remove:listItem', _converters.modelViewRemove);\n\t\t\tediting.modelToView.on('remove', _converters.modelViewMergeAfter, { priority: 'low' });\n\t\t\tdata.modelToView.on('remove:listItem', _converters.modelViewRemove);\n\t\t\tdata.modelToView.on('remove', _converters.modelViewMergeAfter, { priority: 'low' });\n\n\t\t\tediting.modelToView.on('changeAttribute:indent:listItem', _converters.modelViewChangeIndent);\n\t\t\tdata.modelToView.on('changeAttribute:indent:listItem', _converters.modelViewChangeIndent);\n\n\t\t\tdata.viewToModel.on('element:li', _converters.viewModelConverter);\n\t\t\tdata.viewToModel.on('element:ul', _converters.cleanList, { priority: 'high' });\n\t\t\tdata.viewToModel.on('element:ol', _converters.cleanList, { priority: 'high' });\n\n\t\t\t// Register commands for numbered and bulleted list.\n\t\t\teditor.commands.set('numberedList', new _listcommand2.default(editor, 'numbered'));\n\t\t\teditor.commands.set('bulletedList', new _listcommand2.default(editor, 'bulleted'));\n\n\t\t\t// Register commands for indenting.\n\t\t\teditor.commands.set('indentList', new _indentcommand2.default(editor, 'forward'));\n\t\t\teditor.commands.set('outdentList', new _indentcommand2.default(editor, 'backward'));\n\t\t}\n\t}]);\n\n\treturn ListEngine;\n}(_plugin2.default);\n\nexports.default = ListEngine;\n\n/***/ }),\n/* 180 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.getClosestListItem = getClosestListItem;\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * Utilities used in modules from {@link module:list/list list} package.\n *\n * @module list/utils\n */\n\n/**\n * For given {@link module:engine/model/position~Position position}, returns the closest ancestor of that position which is a\n * `listItem` element.\n *\n * @param {module:engine/model/position~Position} position Position which ancestor should be check looking for `listItem` element.\n * @returns {module:engine/model/element~Element|null} Element with `listItem` name that is a closest ancestor of given `position`, or\n * `null` if neither of `position` ancestors is a `listItem`.\n */\nfunction getClosestListItem(position) {\n  return Array.from(position.getAncestors()).find(function (parent) {\n    return parent.name == 'listItem';\n  }) || null;\n}\n\n/***/ }),\n/* 181 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _plugin = __webpack_require__(2);\n\nvar _plugin2 = _interopRequireDefault(_plugin);\n\nvar _element = __webpack_require__(5);\n\nvar _element2 = _interopRequireDefault(_element);\n\nvar _position = __webpack_require__(1);\n\nvar _position2 = _interopRequireDefault(_position);\n\nvar _range = __webpack_require__(3);\n\nvar _range2 = _interopRequireDefault(_range);\n\nvar _element3 = __webpack_require__(20);\n\nvar _element4 = _interopRequireDefault(_element3);\n\nvar _range3 = __webpack_require__(33);\n\nvar _range4 = _interopRequireDefault(_range3);\n\nvar _writer = __webpack_require__(28);\n\nvar _writer2 = _interopRequireDefault(_writer);\n\nvar _buildmodelconverter = __webpack_require__(45);\n\nvar _buildmodelconverter2 = _interopRequireDefault(_buildmodelconverter);\n\nvar _buildviewconverter = __webpack_require__(46);\n\nvar _buildviewconverter2 = _interopRequireDefault(_buildviewconverter);\n\nvar _isArray = __webpack_require__(11);\n\nvar _isArray2 = _interopRequireDefault(_isArray);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module paragraph/paragraph\n */\n\n/**\n * The paragraph feature for the editor.\n * Introduces the `<paragraph>` element in the model which renders as a `<p>` element in the DOM and data.\n *\n * @extends module:core/plugin~Plugin\n */\nvar Paragraph = function (_Plugin) {\n\t_inherits(Paragraph, _Plugin);\n\n\tfunction Paragraph() {\n\t\t_classCallCheck(this, Paragraph);\n\n\t\treturn _possibleConstructorReturn(this, (Paragraph.__proto__ || Object.getPrototypeOf(Paragraph)).apply(this, arguments));\n\t}\n\n\t_createClass(Paragraph, [{\n\t\tkey: 'init',\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tvalue: function init() {\n\t\t\tvar editor = this.editor;\n\t\t\tvar doc = editor.document;\n\t\t\tvar data = editor.data;\n\t\t\tvar editing = editor.editing;\n\n\t\t\t// Schema.\n\t\t\tdoc.schema.registerItem('paragraph', '$block');\n\n\t\t\t// Build converter from model to view for data and editing pipelines.\n\t\t\t(0, _buildmodelconverter2.default)().for(data.modelToView, editing.modelToView).fromElement('paragraph').toElement('p');\n\n\t\t\t// Build converter from view to model for data pipeline.\n\t\t\t(0, _buildviewconverter2.default)().for(data.viewToModel).fromElement('p').toElement('paragraph');\n\n\t\t\t// Autoparagraph text.\n\t\t\tdata.viewToModel.on('text', function (evt, data, consumable, conversionApi) {\n\t\t\t\tautoparagraphText(doc, evt, data, consumable, conversionApi);\n\t\t\t}, { priority: 'lowest' });\n\n\t\t\t// Post-fix potential subsequent paragraphs created by autoparagraphText().\n\t\t\tdata.viewToModel.on('element', mergeSubsequentParagraphs, { priority: 'lowest' });\n\t\t\tdata.viewToModel.on('documentFragment', mergeSubsequentParagraphs, { priority: 'lowest' });\n\n\t\t\t// Convert paragraph-like elements to paragraphs if they weren't consumed.\n\t\t\t// It's a 'low' priority in order to hook in before the default 'element' converter\n\t\t\t// which would then convert children before handling this element.\n\t\t\tdata.viewToModel.on('element', function (evt, data, consumable, conversionApi) {\n\t\t\t\tautoparagraphParagraphLikeElements(doc, evt, data, consumable, conversionApi);\n\t\t\t}, { priority: 'low' });\n\t\t}\n\t}]);\n\n\treturn Paragraph;\n}(_plugin2.default);\n\n/**\n * List of element names which should be treated by the autoparagraphing algorithms as\n * paragraph-like. This means that e.g. the following content:\n *\n *\t\t<h1>Foo</h1>\n *\t\t<table>\n *\t\t\t<tr>\n *\t\t\t\t<td>X</td>\n *\t\t\t\t<td>\n *\t\t\t\t\t<ul>\n *\t\t\t\t\t\t<li>Y</li>\n *\t\t\t\t\t\t<li>Z</li>\n *\t\t\t\t\t</ul>\n *\t\t\t\t</td>\n *\t\t\t</tr>\n *\t\t</table>\n *\n * Contains five paragraph-like elements – `<h1>` and two `<td>` and two `<li>`.\n * Hence, if none of the features is going to convert  those elements the above content will be automatically handled\n * by the paragraph feature and converted to:\n *\n *\t\t<p>Foo</p>\n *\t\t<p>X</p>\n *\t\t<p>Y</p>\n *\t\t<p>Z</p>\n *\n * Note: The `<td>` containing two `<li>` elements was ignored – the inner-most paragraph-like elements\n * have priority upon conversion.\n *\n * @member {Set.<String>} module:paragraph/paragraph~Paragraph.paragraphLikeElements\n */\n\n\nexports.default = Paragraph;\nParagraph.paragraphLikeElements = new Set(['blockquote', 'dd', 'div', 'dt', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'li', 'p', 'td']);\n\nvar paragraphsToMerge = new WeakSet();\n\nfunction autoparagraphText(doc, evt, data, consumable, conversionApi) {\n\t// If text wasn't consumed by the default converter...\n\tif (!consumable.test(data.input)) {\n\t\treturn;\n\t}\n\n\t// And paragraph is allowed in this context...\n\tif (!doc.schema.check({ name: 'paragraph', inside: data.context })) {\n\t\treturn;\n\t}\n\n\t// Let's do autoparagraphing.\n\n\tvar paragraph = new _element2.default('paragraph');\n\n\tparagraphsToMerge.add(paragraph);\n\n\tdata.context.push(paragraph);\n\n\tvar text = conversionApi.convertItem(data.input, consumable, data);\n\n\tif (text) {\n\t\tdata.output = paragraph;\n\t\tparagraph.appendChildren(text);\n\t}\n\n\tdata.context.pop();\n}\n\nfunction autoparagraphParagraphLikeElements(doc, evt, data, consumable, conversionApi) {\n\t// If this is a paragraph-like element...\n\tif (!Paragraph.paragraphLikeElements.has(data.input.name)) {\n\t\treturn;\n\t}\n\n\t// Which wasn't consumed by its own converter...\n\tif (!consumable.test(data.input, { name: true })) {\n\t\treturn;\n\t}\n\n\t// And there are no other paragraph-like elements inside this tree...\n\tif (hasParagraphLikeContent(data.input)) {\n\t\treturn;\n\t}\n\n\t// And paragraph is allowed in this context...\n\tif (!doc.schema.check({ name: 'paragraph', inside: data.context })) {\n\t\treturn;\n\t}\n\n\t// Let's convert this element to a paragraph and then all its children.\n\n\tconsumable.consume(data.input, { name: true });\n\n\tvar paragraph = new _element2.default('paragraph');\n\n\tdata.context.push(paragraph);\n\n\tvar convertedChildren = conversionApi.convertChildren(data.input, consumable, data);\n\n\tparagraph.appendChildren(_writer2.default.normalizeNodes(convertedChildren));\n\n\t// Remove the created paragraph from the stack for other converters.\n\t// See https://github.com/ckeditor/ckeditor5-engine/issues/736\n\tdata.context.pop();\n\n\tdata.output = paragraph;\n}\n\n// Merges subsequent paragraphs if they should be merged (see shouldMerge).\nfunction mergeSubsequentParagraphs(evt, data) {\n\tif (!data.output) {\n\t\treturn;\n\t}\n\n\tvar node = void 0;\n\n\tif ((0, _isArray2.default)(data.output)) {\n\t\tnode = data.output[0];\n\t} else {\n\t\tnode = data.output.getChild(0);\n\t}\n\n\twhile (node && node.nextSibling) {\n\t\tvar nextSibling = node.nextSibling;\n\n\t\tif (paragraphsToMerge.has(node) && paragraphsToMerge.has(nextSibling)) {\n\t\t\t_writer2.default.insert(_position2.default.createAt(node, 'end'), Array.from(nextSibling.getChildren()));\n\t\t\t_writer2.default.remove(_range2.default.createOn(nextSibling));\n\t\t} else {\n\t\t\tnode = node.nextSibling;\n\t\t}\n\t}\n}\n\n// Checks whether an element has paragraph-like descendant.\nfunction hasParagraphLikeContent(element) {\n\tvar range = _range4.default.createIn(element);\n\n\tvar _iteratorNormalCompletion = true;\n\tvar _didIteratorError = false;\n\tvar _iteratorError = undefined;\n\n\ttry {\n\t\tfor (var _iterator = range[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\tvar value = _step.value;\n\n\t\t\tif (value.item instanceof _element4.default && Paragraph.paragraphLikeElements.has(value.item.name)) {\n\t\t\t\treturn true;\n\t\t\t}\n\t\t}\n\t} catch (err) {\n\t\t_didIteratorError = true;\n\t\t_iteratorError = err;\n\t} finally {\n\t\ttry {\n\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t_iterator.return();\n\t\t\t}\n\t\t} finally {\n\t\t\tif (_didIteratorError) {\n\t\t\t\tthrow _iteratorError;\n\t\t\t}\n\t\t}\n\t}\n\n\treturn false;\n}\n\n/***/ }),\n/* 182 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module typing/changebuffer\n */\n\nvar _count = __webpack_require__(190);\n\nvar _count2 = _interopRequireDefault(_count);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * Change buffer allows to group atomic changes (like characters that have been typed) into\n * {@link module:engine/model/batch~Batch batches}.\n *\n * Batches represent single undo steps, hence changes added to one single batch are undone together.\n *\n * The buffer has a configurable limit of atomic changes that it can accommodate. After the limit was\n * exceeded (see {@link ~ChangeBuffer#input}), a new batch is created in {@link ~ChangeBuffer#batch}.\n *\n * To use the change buffer you need to let it know about the number of changes that were added to the batch:\n *\n *\t\tconst buffer = new ChangeBuffer( document, LIMIT );\n *\n *\t\t// Later on in your feature:\n *\t\tbuffer.batch.insert( pos, insertedCharacters );\n *\t\tbuffer.input( insertedCharacters.length );\n *\n */\nvar ChangeBuffer = function () {\n\t/**\n  * Creates a new instance of the change buffer.\n  *\n  * @param {module:engine/model/document~Document} document\n  * @param {Number} [limit=20] The maximum number of atomic changes which can be contained in one batch.\n  */\n\tfunction ChangeBuffer(doc) {\n\t\tvar _this = this;\n\n\t\tvar limit = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 20;\n\n\t\t_classCallCheck(this, ChangeBuffer);\n\n\t\t/**\n   * The document instance.\n   *\n   * @readonly\n   * @member {module:engine/model/document~Document} #document\n   */\n\t\tthis.document = doc;\n\n\t\t/**\n   * The number of atomic changes in the buffer. Once it exceeds the {@link #limit},\n   * the {@link #batch batch} is set to a new one.\n   *\n   * @readonly\n   * @member {Number} #size\n   */\n\t\tthis.size = 0;\n\n\t\t/**\n   * The maximum number of atomic changes which can be contained in one batch.\n   *\n   * @readonly\n   * @member {Number} #limit\n   */\n\t\tthis.limit = limit;\n\n\t\tthis._changeCallback = function (evt, type, changes, batch) {\n\t\t\t_this._onBatch(batch);\n\t\t};\n\n\t\tdoc.on('change', this._changeCallback);\n\n\t\t/**\n   * The current batch instance.\n   *\n   * @private\n   * @member #_batch\n   */\n\n\t\t/**\n   * The callback to document the change event which later needs to be removed.\n   *\n   * @private\n   * @member #_changeCallback\n   */\n\t}\n\n\t/**\n  * The current batch to which a feature should add its deltas. Once the {@link #size}\n  * is reached or exceeds the {@link #limit}, the batch is set to a new instance and the size is reset.\n  *\n  * @type {engine.treeModel.batch.Batch}\n  */\n\n\n\t_createClass(ChangeBuffer, [{\n\t\tkey: 'input',\n\n\n\t\t/**\n   * The input number of changes into the buffer. Once the {@link #size} is\n   * reached or exceeds the {@link #limit}, the batch is set to a new instance and the size is reset.\n   *\n   * @param {Number} changeCount The number of atomic changes to input.\n   */\n\t\tvalue: function input(changeCount) {\n\t\t\tthis.size += changeCount;\n\n\t\t\tif (this.size >= this.limit) {\n\t\t\t\tthis._reset();\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Destroys the buffer.\n   */\n\n\t}, {\n\t\tkey: 'destroy',\n\t\tvalue: function destroy() {\n\t\t\tthis.document.off('change', this._changeCallback);\n\t\t}\n\n\t\t/**\n   * The method to be called in order to notify the buffer about batches which appeared in the document.\n   * The method will check whether it is a new batch and in that case the buffer will be flushed.\n   *\n   * The reason why the buffer needs to be flushed whenever a new batch appears is that the changes added afterwards\n   * should be added to a new batch. For instance, when the  user types, then inserts an image, and then types again,\n   * the characters typed after inserting the image should be added to a different batch than the characters typed before.\n   *\n   * @private\n   * @param {module:engine/model/batch~Batch} batch The batch which appears in the document.\n   */\n\n\t}, {\n\t\tkey: '_onBatch',\n\t\tvalue: function _onBatch(batch) {\n\t\t\t// One operation means a newly created batch.\n\t\t\tif (batch.type != 'transparent' && batch !== this._batch && (0, _count2.default)(batch.getOperations()) <= 1) {\n\t\t\t\tthis._reset();\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Resets the change buffer.\n   *\n   * @private\n   */\n\n\t}, {\n\t\tkey: '_reset',\n\t\tvalue: function _reset() {\n\t\t\tthis._batch = null;\n\t\t\tthis.size = 0;\n\t\t}\n\t}, {\n\t\tkey: 'batch',\n\t\tget: function get() {\n\t\t\tif (!this._batch) {\n\t\t\t\tthis._batch = this.document.batch();\n\t\t\t}\n\n\t\t\treturn this._batch;\n\t\t}\n\t}]);\n\n\treturn ChangeBuffer;\n}();\n\nexports.default = ChangeBuffer;\n\n/***/ }),\n/* 183 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _view = __webpack_require__(7);\n\nvar _view2 = _interopRequireDefault(_view);\n\nvar _template = __webpack_require__(6);\n\nvar _template2 = _interopRequireDefault(_template);\n\nvar _position = __webpack_require__(395);\n\nvar _tounit = __webpack_require__(193);\n\nvar _tounit2 = _interopRequireDefault(_tounit);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module ui/balloonpanel/balloonpanelview\n */\n\n/* globals document */\n\nvar toPx = (0, _tounit2.default)('px');\n\n/**\n * The balloon panel view class.\n *\n * @extends module:ui/view~View\n */\n\nvar BalloonPanelView = function (_View) {\n\t_inherits(BalloonPanelView, _View);\n\n\t/**\n  * @inheritDoc\n  */\n\tfunction BalloonPanelView(locale) {\n\t\t_classCallCheck(this, BalloonPanelView);\n\n\t\tvar _this = _possibleConstructorReturn(this, (BalloonPanelView.__proto__ || Object.getPrototypeOf(BalloonPanelView)).call(this, locale));\n\n\t\tvar bind = _this.bindTemplate;\n\n\t\t/**\n   * The absolute top position of the balloon panel in pixels.\n   *\n   * @observable\n   * @default 0\n   * @member {Number} #top\n   */\n\t\t_this.set('top', 0);\n\n\t\t/**\n   * The absolute left position of the balloon panel in pixels.\n   *\n   * @observable\n   * @default 0\n   * @member {Number} #left\n   */\n\t\t_this.set('left', 0);\n\n\t\t/**\n   * Balloon panel's current position. The position name is reflected in the CSS class set\n   * to the balloon, i.e. `.ck-balloon-panel_arrow_se` for \"se\" position. The class\n   * controls the minor aspects of the balloon's visual appearance like placement\n   * of the \"arrow\". To support a new position, an additional CSS must be created.\n   *\n   * Default position names correspond with {@link #defaultPositions}.\n   *\n   * @observable\n   * @default 'se'\n   * @member {'se'|'sw'|'ne'|'nw'} #position\n   */\n\t\t_this.set('position', 'se');\n\n\t\t/**\n   * Controls whether the balloon panel is visible or not.\n   *\n   * @observable\n   * @default false\n   * @member {Boolean} #isVisible\n   */\n\t\t_this.set('isVisible', false);\n\n\t\t/**\n   * Max width of the balloon panel, as in CSS.\n   *\n   * @observable\n   * @member {Number} #maxWidth\n   */\n\n\t\t/**\n   * Collection of the child views which creates balloon panel contents.\n   *\n   * @readonly\n   * @member {module:ui/viewcollection~ViewCollection}\n   */\n\t\t_this.content = _this.createCollection();\n\n\t\t_this.template = new _template2.default({\n\t\t\ttag: 'div',\n\t\t\tattributes: {\n\t\t\t\tclass: ['ck-balloon-panel', bind.to('position', function (value) {\n\t\t\t\t\treturn 'ck-balloon-panel_arrow_' + value;\n\t\t\t\t}), bind.if('isVisible', 'ck-balloon-panel_visible')],\n\n\t\t\t\tstyle: {\n\t\t\t\t\ttop: bind.to('top', toPx),\n\t\t\t\t\tleft: bind.to('left', toPx),\n\t\t\t\t\tmaxWidth: bind.to('maxWidth', toPx)\n\t\t\t\t},\n\n\t\t\t\t// Make this element `focusable` to be available for adding to FocusTracker.\n\t\t\t\ttabindex: -1\n\t\t\t},\n\n\t\t\tchildren: _this.content\n\t\t});\n\t\treturn _this;\n\t}\n\n\t/**\n  * Shows the balloon panel.\n  *\n  * See {@link #isVisible}.\n  */\n\n\n\t_createClass(BalloonPanelView, [{\n\t\tkey: 'show',\n\t\tvalue: function show() {\n\t\t\tthis.isVisible = true;\n\t\t}\n\n\t\t/**\n   * Hides the balloon panel.\n   *\n   * See {@link #isVisible}.\n   */\n\n\t}, {\n\t\tkey: 'hide',\n\t\tvalue: function hide() {\n\t\t\tthis.isVisible = false;\n\t\t}\n\n\t\t/**\n   * Attaches the balloon panel to a specified DOM element or range with a smart heuristics.\n   *\n   * See {@link @link module:utils/dom/position~getOptimalPosition}.\n   *\n   * TODO: More docs and examples.\n   *\n   * @param {module:utils/dom/position~Options} options Positioning options compatible with\n   * {@link module:utils/dom/position~getOptimalPosition}. Default `positions` array is\n   * {@link module:ui/balloonpanel/balloonpanelview~BalloonPanelView.defaultPositions}.\n   */\n\n\t}, {\n\t\tkey: 'attachTo',\n\t\tvalue: function attachTo(options) {\n\t\t\tthis.show();\n\n\t\t\tvar defaultPositions = BalloonPanelView.defaultPositions;\n\t\t\tvar positionOptions = Object.assign({}, {\n\t\t\t\telement: this.element,\n\t\t\t\tpositions: [defaultPositions.se, defaultPositions.sw, defaultPositions.ne, defaultPositions.nw],\n\t\t\t\tlimiter: document.body,\n\t\t\t\tfitInViewport: true\n\t\t\t}, options);\n\n\t\t\tvar _getOptimalPosition = (0, _position.getOptimalPosition)(positionOptions),\n\t\t\t    top = _getOptimalPosition.top,\n\t\t\t    left = _getOptimalPosition.left,\n\t\t\t    position = _getOptimalPosition.name;\n\n\t\t\tObject.assign(this, { top: top, left: left, position: position });\n\t\t}\n\t}]);\n\n\treturn BalloonPanelView;\n}(_view2.default);\n\n/**\n * A horizontal offset of the arrow tip from the edge of the balloon. Controlled by CSS.\n *\n *\t\t +-----|---------...\n *\t\t |     |\n *\t\t |     |\n *\t\t |     |\n *\t\t |     |\n *\t\t +--+  |  +------...\n *\t\t     \\ | /\n *\t\t      \\|/\n *\t    >|-----|<---------------- horizontal offset\n *\n * @default 30\n * @member {Number} module:ui/balloonpanel/balloonpanelview~BalloonPanelView.arrowHorizontalOffset\n */\n\n\nexports.default = BalloonPanelView;\nBalloonPanelView.arrowHorizontalOffset = 30;\n\n/**\n * A vertical offset of the arrow from the edge of the balloon. Controlled by CSS.\n *\n *\t\t +-------------...\n *\t\t |\n *\t\t |\n *\t\t |                      /-- vertical offset\n *\t\t |                     V\n *\t\t +--+    +-----...    ---------\n *\t\t     \\  /              |\n *\t\t      \\/               |\n *\t\t-------------------------------\n *\t\t                       ^\n *\n * @default 15\n * @member {Number} module:ui/balloonpanel/balloonpanelview~BalloonPanelView.arrowVerticalOffset\n */\nBalloonPanelView.arrowVerticalOffset = 15;\n\n/**\n * A default set of positioning functions used by the balloon panel view\n * when attaching using {@link #attachTo} method.\n *\n * The available positioning functions are as follows:\n *\n * * South east:\n *\n *\t\t[ Target ]\n *\t\t    ^\n *\t\t+-----------------+\n *\t\t|     Balloon     |\n *\t\t+-----------------+\n *\n *\n * * South west:\n *\n *\t\t         [ Target ]\n *\t\t              ^\n *\t\t+-----------------+\n *\t\t|     Balloon     |\n *\t\t+-----------------+\n *\n *\n * * North east:\n *\n *\t\t+-----------------+\n *\t\t|     Balloon     |\n *\t\t+-----------------+\n *\t\t    V\n *\t\t[ Target ]\n *\n *\n * * North west:\n *\n *\t\t+-----------------+\n *\t\t|     Balloon     |\n *\t\t+-----------------+\n *\t\t              V\n *\t\t         [ Target ]\n *\n * See {@link #attachTo}.\n *\n * Positioning functions must be compatible with {@link module:utils/dom/position~Position}.\n *\n * The name that position function returns will be reflected in balloon panel's class that\n * controls the placement of the \"arrow\". See {@link #position} to learn more.\n *\n * @member {Object} module:ui/balloonpanel/balloonpanelview~BalloonPanelView.defaultPositions\n */\nBalloonPanelView.defaultPositions = {\n\tse: function se(targetRect) {\n\t\treturn {\n\t\t\ttop: targetRect.bottom + BalloonPanelView.arrowVerticalOffset,\n\t\t\tleft: targetRect.left + targetRect.width / 2 - BalloonPanelView.arrowHorizontalOffset,\n\t\t\tname: 'se'\n\t\t};\n\t},\n\n\tsw: function sw(targetRect, balloonRect) {\n\t\treturn {\n\t\t\ttop: targetRect.bottom + BalloonPanelView.arrowVerticalOffset,\n\t\t\tleft: targetRect.left + targetRect.width / 2 - balloonRect.width + BalloonPanelView.arrowHorizontalOffset,\n\t\t\tname: 'sw'\n\t\t};\n\t},\n\n\tne: function ne(targetRect, balloonRect) {\n\t\treturn {\n\t\t\ttop: targetRect.top - balloonRect.height - BalloonPanelView.arrowVerticalOffset,\n\t\t\tleft: targetRect.left + targetRect.width / 2 - BalloonPanelView.arrowHorizontalOffset,\n\t\t\tname: 'ne'\n\t\t};\n\t},\n\n\tnw: function nw(targetRect, balloonRect) {\n\t\treturn {\n\t\t\ttop: targetRect.top - balloonRect.height - BalloonPanelView.arrowVerticalOffset,\n\t\t\tleft: targetRect.left + targetRect.width / 2 - balloonRect.width + BalloonPanelView.arrowHorizontalOffset,\n\t\t\tname: 'nw'\n\t\t};\n\t}\n};\n\n/***/ }),\n/* 184 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = clickOutsideHandler;\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/bindings/clickoutsidehandler\n */\n\n/* global document */\n\n/**\n * Handles a DOM `click` event outside of specified element and fires an action.\n *\n * Note that it is not handled by a `click` event, this is to avoid situation when click on some trigger\n * opens and closes element at the same time.\n *\n * @param {Object} options Configuration options.\n * @param {module:utils/dom/emittermixin~Emitter} options.emitter The emitter to which this behavior should be added.\n * @param {Function} options.activator Function returning a `Boolean`, to determine whether handler is active.\n * @param {HTMLElement} options.contextElement `HTMLElement` that clicking inside of which will not fire the callback.\n * @param {Function} options.callback Function fired after clicking outside of a specified element.\n */\nfunction clickOutsideHandler(_ref) {\n  var emitter = _ref.emitter,\n      activator = _ref.activator,\n      callback = _ref.callback,\n      contextElement = _ref.contextElement;\n\n  emitter.listenTo(document, 'mouseup', function (evt, _ref2) {\n    var target = _ref2.target;\n\n    if (activator() && !contextElement.contains(target)) {\n      callback();\n    }\n  });\n}\n\n/***/ }),\n/* 185 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = submitHandler;\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/bindings/submithandler\n */\n\n/**\n * Handles native DOM `submit` event by preventing it and firing\n * the {@link module:ui/view~View view's} `submit` event, which can be then handled by the\n * parent controller.\n *\n * @param {Object} [options] Configuration options.\n * @param {module:ui/view~View} options.view The view to which this behavior should be added.\n */\nfunction submitHandler(_ref) {\n  var view = _ref.view;\n\n  view.listenTo(view.element, 'submit', function (evt, domEvt) {\n    domEvt.preventDefault();\n    view.fire('submit');\n  }, { useCapture: true });\n}\n\n/***/ }),\n/* 186 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _view = __webpack_require__(7);\n\nvar _view2 = _interopRequireDefault(_view);\n\nvar _template = __webpack_require__(6);\n\nvar _template2 = _interopRequireDefault(_template);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module ui/inputtext/inputtextview\n */\n\n/**\n * The text input view class.\n *\n * @extends module:ui/view~View\n */\nvar InputTextView = function (_View) {\n\t_inherits(InputTextView, _View);\n\n\t/**\n  * @inheritDoc\n  */\n\tfunction InputTextView(locale) {\n\t\t_classCallCheck(this, InputTextView);\n\n\t\t/**\n   * The value of the input.\n   *\n   * @observable\n   * @member {String} #value\n   */\n\t\tvar _this = _possibleConstructorReturn(this, (InputTextView.__proto__ || Object.getPrototypeOf(InputTextView)).call(this, locale));\n\n\t\t_this.set('value');\n\n\t\t/**\n   * The `id` attribute of the input (i.e. to pair with a `<label>` element).\n   *\n   * @observable\n   * @member {String} #id\n   */\n\t\t_this.set('id');\n\n\t\tvar bind = _this.bindTemplate;\n\n\t\t_this.template = new _template2.default({\n\t\t\ttag: 'input',\n\t\t\tattributes: {\n\t\t\t\ttype: 'text',\n\t\t\t\tclass: ['ck-input', 'ck-input-text'],\n\t\t\t\tid: bind.to('id')\n\t\t\t}\n\t\t});\n\n\t\t// Note: `value` cannot be an HTML attribute, because it doesn't change HTMLInputElement value once changed.\n\t\t_this.on('change:value', function (evt, propertyName, value) {\n\t\t\treturn _this.element.value = value || '';\n\t\t});\n\t\treturn _this;\n\t}\n\n\t/**\n  * Moves the focus to the input and selects the value.\n  */\n\n\n\t_createClass(InputTextView, [{\n\t\tkey: 'select',\n\t\tvalue: function select() {\n\t\t\tthis.element.select();\n\t\t}\n\n\t\t/**\n   * Focuses the input.\n   */\n\n\t}, {\n\t\tkey: 'focus',\n\t\tvalue: function focus() {\n\t\t\tthis.element.focus();\n\t\t}\n\t}]);\n\n\treturn InputTextView;\n}(_view2.default);\n\nexports.default = InputTextView;\n\n/***/ }),\n/* 187 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _view = __webpack_require__(7);\n\nvar _view2 = _interopRequireDefault(_view);\n\nvar _template = __webpack_require__(6);\n\nvar _template2 = _interopRequireDefault(_template);\n\nvar _uid = __webpack_require__(65);\n\nvar _uid2 = _interopRequireDefault(_uid);\n\nvar _labelview = __webpack_require__(377);\n\nvar _labelview2 = _interopRequireDefault(_labelview);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module ui/labeledinput/labeledinputview\n */\n\n/**\n * The labeled input view class.\n *\n * @extends module:ui/view~View\n */\nvar LabeledInputView = function (_View) {\n\t_inherits(LabeledInputView, _View);\n\n\t/**\n  * Creates an instance of the labeled input view class.\n  *\n  * @param {module:utils/locale~Locale} locale The locale instance.\n  * @param {Function} InputView Constructor of the input view.\n  */\n\tfunction LabeledInputView(locale, InputView) {\n\t\t_classCallCheck(this, LabeledInputView);\n\n\t\tvar _this = _possibleConstructorReturn(this, (LabeledInputView.__proto__ || Object.getPrototypeOf(LabeledInputView)).call(this, locale));\n\n\t\tvar id = 'ck-input-' + (0, _uid2.default)();\n\n\t\t/**\n   * The text of the label.\n   *\n   * @observable\n   * @member {String} #label\n   */\n\t\t_this.set('label');\n\n\t\t/**\n   * The value of the input.\n   *\n   * @observable\n   * @member {String} #value\n   */\n\t\t_this.set('value');\n\n\t\t/**\n   * The label view.\n   *\n   * @member {module:ui/label/labelview~LabelView} #labelView\n   */\n\t\t_this.labelView = _this._createLabelView(id);\n\n\t\t/**\n   * The input view.\n   *\n   * @member {module:ui/view~View} #inputView\n   */\n\t\t_this.inputView = _this._createInputView(InputView, id);\n\n\t\t_this.template = new _template2.default({\n\t\t\ttag: 'div',\n\n\t\t\tchildren: [_this.labelView, _this.inputView]\n\t\t});\n\t\treturn _this;\n\t}\n\n\t/**\n  * Creates label view class instance and bind with view.\n  *\n  * @private\n  * @param {String} id Unique id to set as labelView#for attribute.\n  * @returns {module:ui/label/labelview~LabelView}\n  */\n\n\n\t_createClass(LabeledInputView, [{\n\t\tkey: '_createLabelView',\n\t\tvalue: function _createLabelView(id) {\n\t\t\tvar labelView = new _labelview2.default(this.locale);\n\n\t\t\tlabelView.for = id;\n\t\t\tlabelView.bind('text').to(this, 'label');\n\n\t\t\treturn labelView;\n\t\t}\n\n\t\t/**\n   * Creates input view class instance and bind with view.\n   *\n   * @private\n   * @param {Function} InputView Input view constructor.\n   * @param {String} id Unique id to set as inputView#id attribute.\n   * @returns {module:ui/inputtext/inputtextview~InputTextView}\n   */\n\n\t}, {\n\t\tkey: '_createInputView',\n\t\tvalue: function _createInputView(InputView, id) {\n\t\t\tvar inputView = new InputView(this.locale);\n\n\t\t\tinputView.id = id;\n\t\t\tinputView.bind('value').to(this);\n\n\t\t\treturn inputView;\n\t\t}\n\n\t\t/**\n   * Moves the focus to the input and selects the value.\n   */\n\n\t}, {\n\t\tkey: 'select',\n\t\tvalue: function select() {\n\t\t\tthis.inputView.select();\n\t\t}\n\n\t\t/**\n   * Focuses the input.\n   */\n\n\t}, {\n\t\tkey: 'focus',\n\t\tvalue: function focus() {\n\t\t\tthis.inputView.focus();\n\t\t}\n\t}]);\n\n\treturn LabeledInputView;\n}(_view2.default);\n\nexports.default = LabeledInputView;\n\n/***/ }),\n/* 188 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if (\"value\" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };\n\nvar _view = __webpack_require__(7);\n\nvar _view2 = _interopRequireDefault(_view);\n\nvar _template = __webpack_require__(6);\n\nvar _template2 = _interopRequireDefault(_template);\n\nvar _focustracker = __webpack_require__(60);\n\nvar _focustracker2 = _interopRequireDefault(_focustracker);\n\nvar _focuscycler = __webpack_require__(120);\n\nvar _focuscycler2 = _interopRequireDefault(_focuscycler);\n\nvar _keystrokehandler = __webpack_require__(61);\n\nvar _keystrokehandler2 = _interopRequireDefault(_keystrokehandler);\n\nvar _toolbarseparatorview = __webpack_require__(382);\n\nvar _toolbarseparatorview2 = _interopRequireDefault(_toolbarseparatorview);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module ui/toolbar/toolbarview\n */\n\n/**\n * The toolbar view class.\n *\n * @extends module:ui/view~View\n */\nvar ToolbarView = function (_View) {\n\t_inherits(ToolbarView, _View);\n\n\t/**\n  * @inheritDoc\n  */\n\tfunction ToolbarView(locale) {\n\t\t_classCallCheck(this, ToolbarView);\n\n\t\t/**\n   * Collection of the toolbar items (like buttons).\n   *\n   * @readonly\n   * @member {module:ui/viewcollection~ViewCollection}\n   */\n\t\tvar _this = _possibleConstructorReturn(this, (ToolbarView.__proto__ || Object.getPrototypeOf(ToolbarView)).call(this, locale));\n\n\t\t_this.items = _this.createCollection();\n\n\t\t/**\n   * Tracks information about DOM focus in the list.\n   *\n   * @readonly\n   * @member {module:utils/focustracker~FocusTracker}\n   */\n\t\t_this.focusTracker = new _focustracker2.default();\n\n\t\t/**\n   * Instance of the {@link module:core/keystrokehandler~KeystrokeHandler}.\n   *\n   * @readonly\n   * @member {module:core/keystrokehandler~KeystrokeHandler}\n   */\n\t\t_this.keystrokes = new _keystrokehandler2.default();\n\n\t\t/**\n   * Helps cycling over focusable {@link #items} in the toolbar.\n   *\n   * @readonly\n   * @protected\n   * @member {module:ui/focuscycler~FocusCycler}\n   */\n\t\t_this._focusCycler = new _focuscycler2.default({\n\t\t\tfocusables: _this.items,\n\t\t\tfocusTracker: _this.focusTracker,\n\t\t\tkeystrokeHandler: _this.keystrokes,\n\t\t\tactions: {\n\t\t\t\t// Navigate toolbar items backwards using the arrow[left,up] keys.\n\t\t\t\tfocusPrevious: ['arrowleft', 'arrowup'],\n\n\t\t\t\t// Navigate toolbar items forwards using the arrow[right,down] keys.\n\t\t\t\tfocusNext: ['arrowright', 'arrowdown']\n\t\t\t}\n\t\t});\n\n\t\t_this.template = new _template2.default({\n\t\t\ttag: 'div',\n\t\t\tattributes: {\n\t\t\t\tclass: ['ck-toolbar']\n\t\t\t},\n\n\t\t\tchildren: _this.items\n\t\t});\n\n\t\t_this.items.on('add', function (evt, item) {\n\t\t\t_this.focusTracker.add(item.element);\n\t\t});\n\n\t\t_this.items.on('remove', function (evt, item) {\n\t\t\t_this.focusTracker.remove(item.element);\n\t\t});\n\t\treturn _this;\n\t}\n\n\t/**\n  * @inheritDoc\n  */\n\n\n\t_createClass(ToolbarView, [{\n\t\tkey: 'init',\n\t\tvalue: function init() {\n\t\t\t// Start listening for the keystrokes coming from #element.\n\t\t\tthis.keystrokes.listenTo(this.element);\n\n\t\t\treturn _get(ToolbarView.prototype.__proto__ || Object.getPrototypeOf(ToolbarView.prototype), 'init', this).call(this);\n\t\t}\n\n\t\t/**\n   * Focuses the first focusable in {@link #items}.\n   */\n\n\t}, {\n\t\tkey: 'focus',\n\t\tvalue: function focus() {\n\t\t\tthis._focusCycler.focusFirst();\n\t\t}\n\n\t\t/**\n   * A utility which expands a plain toolbar configuration into\n   * {@link module:ui/toolbar/toolbarview~ToolbarView#items} using a given component factory.\n   *\n   * @param {Array} config The toolbar config.\n   * @param {module:ui/componentfactory~ComponentFactory} factory A factory producing toolbar items.\n   * @returns {Promise} A promise resolved when created toolbar items are initialized.\n   */\n\n\t}, {\n\t\tkey: 'fillFromConfig',\n\t\tvalue: function fillFromConfig(config, factory) {\n\t\t\tvar _this2 = this;\n\n\t\t\tif (!config) {\n\t\t\t\treturn Promise.resolve();\n\t\t\t}\n\n\t\t\treturn Promise.all(config.map(function (name) {\n\t\t\t\tvar component = name == '|' ? new _toolbarseparatorview2.default() : factory.create(name);\n\n\t\t\t\treturn _this2.items.add(component);\n\t\t\t}));\n\t\t}\n\t}]);\n\n\treturn ToolbarView;\n}(_view2.default);\n\nexports.default = ToolbarView;\n\n/***/ }),\n/* 189 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nexports.transformRangesByDeltas = transformRangesByDeltas;\n\nvar _command = __webpack_require__(15);\n\nvar _command2 = _interopRequireDefault(_command);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _toConsumableArray(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } else { return Array.from(arr); } }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module undo/basecommand\n */\n\n/**\n * Base class for undo feature commands: {@link module:undo/undocommand~UndoCommand} and {@link module:undo/redocommand~RedoCommand}.\n *\n * @protected\n * @extends module:core/command/command~Command\n */\nvar BaseCommand = function (_Command) {\n\t_inherits(BaseCommand, _Command);\n\n\tfunction BaseCommand(editor) {\n\t\t_classCallCheck(this, BaseCommand);\n\n\t\t/**\n   * Stack of items stored by the command. These are pairs of:\n   *\n   * * {@link module:engine/model/batch~Batch batch} saved by the command,\n   * * {@link module:engine/model/selection~Selection selection} state at the moment of saving the batch.\n   *\n   * @protected\n   * @member {Array} #_stack\n   */\n\t\tvar _this = _possibleConstructorReturn(this, (BaseCommand.__proto__ || Object.getPrototypeOf(BaseCommand)).call(this, editor));\n\n\t\t_this._stack = [];\n\n\t\t/**\n   * Stores all batches that were created by this command.\n   *\n   * @protected\n   * @member {WeakSet.<module:engine/model/batch~Batch>} #_createdBatches\n   */\n\t\t_this._createdBatches = new WeakSet();\n\n\t\t// Refresh state, so command is inactive just after initialization.\n\t\t_this.refreshState();\n\t\treturn _this;\n\t}\n\n\t/**\n  * Stores a batch in the command, together with the selection state of the {@link module:engine/model/document~Document document}\n  * created by the editor which this command is registered to.\n  *\n  * @param {module:engine/model/batch~Batch} batch The batch to add.\n  */\n\n\n\t_createClass(BaseCommand, [{\n\t\tkey: 'addBatch',\n\t\tvalue: function addBatch(batch) {\n\t\t\tvar selection = {\n\t\t\t\tranges: Array.from(this.editor.document.selection.getRanges()),\n\t\t\t\tisBackward: this.editor.document.selection.isBackward\n\t\t\t};\n\n\t\t\tthis._stack.push({ batch: batch, selection: selection });\n\t\t\tthis.refreshState();\n\t\t}\n\n\t\t/**\n   * Removes all items from the stack.\n   */\n\n\t}, {\n\t\tkey: 'clearStack',\n\t\tvalue: function clearStack() {\n\t\t\tthis._stack = [];\n\t\t\tthis.refreshState();\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: '_checkEnabled',\n\t\tvalue: function _checkEnabled() {\n\t\t\treturn this._stack.length > 0;\n\t\t}\n\n\t\t/**\n   * Restores the {@link module:engine/model/document~Document#selection document selection} state after a batch was undone.\n   *\n   * @protected\n   * @param {Array.<module:engine/model/range~Range>} ranges Ranges to be restored.\n   * @param {Boolean} isBackward A flag describing whether the restored range was selected forward or backward.\n   */\n\n\t}, {\n\t\tkey: '_restoreSelection',\n\t\tvalue: function _restoreSelection(ranges, isBackward, deltas) {\n\t\t\tvar document = this.editor.document;\n\n\t\t\t// This will keep the transformed selection ranges.\n\t\t\tvar selectionRanges = [];\n\n\t\t\t// Transform all ranges from the restored selection.\n\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\tvar _didIteratorError = false;\n\t\t\tvar _iteratorError = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator = ranges[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\tvar range = _step.value;\n\n\t\t\t\t\tvar transformedRanges = transformSelectionRange(range, deltas);\n\n\t\t\t\t\t// For each `range` from `ranges`, we take only one transformed range.\n\t\t\t\t\t// This is because we want to prevent situation where single-range selection\n\t\t\t\t\t// got transformed to multi-range selection. We will take the first range that\n\t\t\t\t\t// is not in the graveyard.\n\t\t\t\t\tvar transformedRange = transformedRanges.find(function (range) {\n\t\t\t\t\t\treturn range.start.root != document.graveyard;\n\t\t\t\t\t});\n\n\t\t\t\t\t// `transformedRange` might be `undefined` if transformed range ended up in graveyard.\n\t\t\t\t\tif (transformedRange) {\n\t\t\t\t\t\tselectionRanges.push(transformedRange);\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\t// `selectionRanges` may be empty if all ranges ended up in graveyard. If that is the case, do not restore selection.\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError = true;\n\t\t\t\t_iteratorError = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tif (selectionRanges.length) {\n\t\t\t\tdocument.selection.setRanges(selectionRanges, isBackward);\n\t\t\t}\n\t\t}\n\t}]);\n\n\treturn BaseCommand;\n}(_command2.default);\n\n// Transforms given range `range` by deltas from `document` history, starting from a delta with given `baseVersion`.\n// Returns an array containing one or more ranges, which are result of the transformation.\n\n\nexports.default = BaseCommand;\nfunction transformSelectionRange(range, deltas) {\n\t// The range will be transformed by history deltas that happened after the selection got stored.\n\t// Note, that at this point, the document history is already updated by undo command execution. We will\n\t// not transform the range by deltas that got undone or their reversing counterparts.\n\tvar transformed = transformRangesByDeltas([range], deltas);\n\n\t// After `range` got transformed, we have an array of ranges. Some of those\n\t// ranges may be \"touching\" -- they can be next to each other and could be merged.\n\t// First, we have to sort those ranges because they don't have to be in an order.\n\ttransformed.sort(function (a, b) {\n\t\treturn a.start.isBefore(b.start) ? -1 : 1;\n\t});\n\n\t// Then, we check if two consecutive ranges are touching.\n\tfor (var i = 1; i < transformed.length; i++) {\n\t\tvar a = transformed[i - 1];\n\t\tvar b = transformed[i];\n\n\t\tif (a.end.isTouching(b.start)) {\n\t\t\ta.end = b.end;\n\t\t\ttransformed.splice(i, 1);\n\t\t\ti--;\n\t\t}\n\t}\n\n\treturn transformed;\n}\n\n// Transforms given set of `ranges` by given set of `deltas`. Returns transformed `ranges`.\nfunction transformRangesByDeltas(ranges, deltas) {\n\tvar _iteratorNormalCompletion2 = true;\n\tvar _didIteratorError2 = false;\n\tvar _iteratorError2 = undefined;\n\n\ttry {\n\t\tfor (var _iterator2 = deltas[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {\n\t\t\tvar delta = _step2.value;\n\t\t\tvar _iteratorNormalCompletion3 = true;\n\t\t\tvar _didIteratorError3 = false;\n\t\t\tvar _iteratorError3 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator3 = delta.operations[Symbol.iterator](), _step3; !(_iteratorNormalCompletion3 = (_step3 = _iterator3.next()).done); _iteratorNormalCompletion3 = true) {\n\t\t\t\t\tvar operation = _step3.value;\n\n\t\t\t\t\t// We look through all operations from all deltas.\n\n\t\t\t\t\tfor (var i = 0; i < ranges.length; i++) {\n\t\t\t\t\t\t// We transform every range by every operation.\n\t\t\t\t\t\tvar result = void 0;\n\n\t\t\t\t\t\tswitch (operation.type) {\n\t\t\t\t\t\t\tcase 'insert':\n\t\t\t\t\t\t\t\tresult = ranges[i]._getTransformedByInsertion(operation.position, operation.nodes.maxOffset, true);\n\t\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\t\tcase 'move':\n\t\t\t\t\t\t\tcase 'remove':\n\t\t\t\t\t\t\tcase 'reinsert':\n\t\t\t\t\t\t\t\tresult = ranges[i]._getTransformedByMove(operation.sourcePosition, operation.targetPosition, operation.howMany, true);\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\t// If we have a transformation result, we substitute transformed range with it in `transformed` array.\n\t\t\t\t\t\t// Keep in mind that the result is an array and may contain multiple ranges.\n\t\t\t\t\t\tif (result) {\n\t\t\t\t\t\t\tranges.splice.apply(ranges, [i, 1].concat(_toConsumableArray(result)));\n\n\t\t\t\t\t\t\t// Fix iterator.\n\t\t\t\t\t\t\ti = i + result.length - 1;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError3 = true;\n\t\t\t\t_iteratorError3 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion3 && _iterator3.return) {\n\t\t\t\t\t\t_iterator3.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError3) {\n\t\t\t\t\t\tthrow _iteratorError3;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t} catch (err) {\n\t\t_didIteratorError2 = true;\n\t\t_iteratorError2 = err;\n\t} finally {\n\t\ttry {\n\t\t\tif (!_iteratorNormalCompletion2 && _iterator2.return) {\n\t\t\t\t_iterator2.return();\n\t\t\t}\n\t\t} finally {\n\t\t\tif (_didIteratorError2) {\n\t\t\t\tthrow _iteratorError2;\n\t\t\t}\n\t\t}\n\t}\n\n\treturn ranges;\n}\n\n/***/ }),\n/* 190 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = count;\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/count\n */\n\n/**\n * Returns the number of items return by the iterator.\n *\n *\t\tcount( [ 1, 2, 3, 4, 5 ] ); // 5;\n *\n * @param {Iterable.<*>} iterator Any iterator.\n * @returns {Number} Number of items returned by that iterator.\n */\nfunction count(iterator) {\n  var count = 0;\n\n  var _iteratorNormalCompletion = true;\n  var _didIteratorError = false;\n  var _iteratorError = undefined;\n\n  try {\n    for (var _iterator = iterator[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n      var _ = _step.value;\n      // jshint ignore:line\n      count++;\n    }\n  } catch (err) {\n    _didIteratorError = true;\n    _iteratorError = err;\n  } finally {\n    try {\n      if (!_iteratorNormalCompletion && _iterator.return) {\n        _iterator.return();\n      }\n    } finally {\n      if (_didIteratorError) {\n        throw _iteratorError;\n      }\n    }\n  }\n\n  return count;\n}\n\n/***/ }),\n/* 191 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\nexports.default = diff;\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/diff\n */\n\n// The following code is based on the \"O(NP) Sequence Comparison Algorithm\"\n// by Sun Wu, Udi Manber, Gene Myers, Webb Miller.\n\n/**\n * Calculates the difference between two arrays or strings producing an array containing a list of changes\n * necessary to transform input into output.\n *\n *\t\tdiff( 'aba', 'acca' ); // [ 'equal', 'insert', 'insert', 'delete', 'equal' ]\n *\n * @param {Array|String} a Input array or string.\n * @param {Array|String} b Output array or string.\n * @param {Function} [cmp] Optional function used to compare array values, by default === is used.\n * @returns {Array} Array of changes.\n */\nfunction diff(a, b, cmp) {\n\t// Set the comparator function.\n\tcmp = cmp || function (a, b) {\n\t\treturn a === b;\n\t};\n\n\t// Temporary action type statics.\n\tvar _insert = void 0,\n\t    _delete = void 0;\n\n\t// Swapped the arrays to use the shorter one as the first one.\n\tif (b.length < a.length) {\n\t\tvar tmp = a;\n\n\t\ta = b;\n\t\tb = tmp;\n\n\t\t// We swap the action types as well.\n\t\t_insert = 'delete';\n\t\t_delete = 'insert';\n\t} else {\n\t\t_insert = 'insert';\n\t\t_delete = 'delete';\n\t}\n\n\tvar m = a.length;\n\tvar n = b.length;\n\tvar delta = n - m;\n\n\t// Edit scripts, for each diagonal.\n\tvar es = {};\n\t// Furthest points, the furthest y we can get on each diagonal.\n\tvar fp = {};\n\n\tfunction snake(k) {\n\t\t// We use -1 as an alternative below to handle initial values ( instead of filling the fp with -1 first ).\n\t\t// Furthest points (y) on the diagonal below k.\n\t\tvar y1 = (fp[k - 1] !== undefined ? fp[k - 1] : -1) + 1;\n\t\t// Furthest points (y) on the diagonal above k.\n\t\tvar y2 = fp[k + 1] !== undefined ? fp[k + 1] : -1;\n\t\t// The way we should go to get further.\n\t\tvar dir = y1 > y2 ? -1 : 1;\n\n\t\t// Clone previous changes array (if any).\n\t\tif (es[k + dir]) {\n\t\t\tes[k] = es[k + dir].slice(0);\n\t\t}\n\n\t\t// Create changes array.\n\t\tif (!es[k]) {\n\t\t\tes[k] = [];\n\t\t}\n\n\t\t// Push the action.\n\t\tes[k].push(y1 > y2 ? _insert : _delete);\n\n\t\t// Set the beginning coordinates.\n\t\tvar y = Math.max(y1, y2);\n\t\tvar x = y - k;\n\n\t\t// Traverse the diagonal as long as the values match.\n\t\twhile (x < m && y < n && cmp(a[x], b[y])) {\n\t\t\tx++;\n\t\t\ty++;\n\t\t\t// Push no change action.\n\t\t\tes[k].push('equal');\n\t\t}\n\n\t\treturn y;\n\t}\n\n\tvar p = 0;\n\tvar k = void 0;\n\n\t// Traverse the graph until we reach the end of the longer string.\n\tdo {\n\t\t// Updates furthest points and edit scripts for diagonals below delta.\n\t\tfor (k = -p; k < delta; k++) {\n\t\t\tfp[k] = snake(k);\n\t\t}\n\n\t\t// Updates furthest points and edit scripts for diagonals above delta.\n\t\tfor (k = delta + p; k > delta; k--) {\n\t\t\tfp[k] = snake(k);\n\t\t}\n\n\t\t// Updates furthest point and edit script for the delta diagonal.\n\t\t// note that the delta diagonal is the one which goes through the sink (m, n).\n\t\tfp[delta] = snake(delta);\n\n\t\tp++;\n\t} while (fp[delta] !== n);\n\n\t// Return the final list of edit changes.\n\t// We remove the first item that represents the action for the injected nulls.\n\treturn es[delta].slice(1);\n}\n\n/***/ }),\n/* 192 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = getAncestors;\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/* globals Node */\n\n/**\n * @module utils/dom/getancestors\n */\n\n/**\n * Returns all ancestors of given DOM node, starting from the top-most (root). Includes the given node itself. If the\n * node is a part of `DocumentFragment` that `DocumentFragment` will be returned. In contrary, if the node is\n * appended to a `Document`, that `Document` will not be returned (algorithms operating on DOM tree care for `Document#documentElement`\n * at most, which will be returned).\n *\n * @param {Node} node DOM node.\n * @returns {Array.<Node|DocumentFragment>} Array of given `node` parents.\n */\nfunction getAncestors(node) {\n  var nodes = [];\n\n  // We are interested in `Node`s `DocumentFragment`s only.\n  while (node && node.nodeType != Node.DOCUMENT_NODE) {\n    nodes.unshift(node);\n    node = node.parentNode;\n  }\n\n  return nodes;\n}\n\n/***/ }),\n/* 193 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = toUnit;\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/dom/tounit\n */\n\n/**\n * Returns a helper function, which adds a desired trailing\n * `unit` to the passed value.\n *\n * @param {String} unit An unit like \"px\" or \"em\".\n * @returns {module:utils/dom/tounit~helper}\n */\nfunction toUnit(unit) {\n  /**\n   * A function, which adds a pre–defined trailing `unit`\n   * to the passed `value`.\n   *\n   * @function helper\n  \t * @param {*} value A value to be given the unit.\n  \t * @returns {String} A value with the trailing unit.\n   */\n  return function (value) {\n    return value + unit;\n  };\n}\n\n/***/ }),\n/* 194 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _getNative = __webpack_require__(49);\n\nvar _getNative2 = _interopRequireDefault(_getNative);\n\nvar _root = __webpack_require__(30);\n\nvar _root2 = _interopRequireDefault(_root);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/* Built-in method references that are verified to be native. */\nvar Map = (0, _getNative2.default)(_root2.default, 'Map');\n\nexports.default = Map;\n\n/***/ }),\n/* 195 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _getNative = __webpack_require__(49);\n\nvar _getNative2 = _interopRequireDefault(_getNative);\n\nvar _root = __webpack_require__(30);\n\nvar _root2 = _interopRequireDefault(_root);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/* Built-in method references that are verified to be native. */\nvar Set = (0, _getNative2.default)(_root2.default, 'Set');\n\nexports.default = Set;\n\n/***/ }),\n/* 196 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _root = __webpack_require__(30);\n\nvar _root2 = _interopRequireDefault(_root);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** Built-in value references. */\nvar Uint8Array = _root2.default.Uint8Array;\n\nexports.default = Uint8Array;\n\n/***/ }),\n/* 197 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * A faster alternative to `Function#apply`, this function invokes `func`\n * with the `this` binding of `thisArg` and the arguments of `args`.\n *\n * @private\n * @param {Function} func The function to invoke.\n * @param {*} thisArg The `this` binding of `func`.\n * @param {Array} args The arguments to invoke `func` with.\n * @returns {*} Returns the result of `func`.\n */\nfunction apply(func, thisArg, args) {\n  var length = args.length;\n  switch (length) {\n    case 0:\n      return func.call(thisArg);\n    case 1:\n      return func.call(thisArg, args[0]);\n    case 2:\n      return func.call(thisArg, args[0], args[1]);\n    case 3:\n      return func.call(thisArg, args[0], args[1], args[2]);\n  }\n  return func.apply(thisArg, args);\n}\n\nexports.default = apply;\n\n/***/ }),\n/* 198 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * A specialized version of `_.reduce` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @param {*} [accumulator] The initial value.\n * @param {boolean} [initAccum] Specify using the first element of `array` as\n *  the initial value.\n * @returns {*} Returns the accumulated value.\n */\nfunction arrayReduce(array, iteratee, accumulator, initAccum) {\n  var index = -1,\n      length = array.length;\n\n  if (initAccum && length) {\n    accumulator = array[++index];\n  }\n  while (++index < length) {\n    accumulator = iteratee(accumulator, array[index], index, array);\n  }\n  return accumulator;\n}\n\nexports.default = arrayReduce;\n\n/***/ }),\n/* 199 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _Stack = __webpack_require__(123);\n\nvar _Stack2 = _interopRequireDefault(_Stack);\n\nvar _arrayEach = __webpack_require__(409);\n\nvar _arrayEach2 = _interopRequireDefault(_arrayEach);\n\nvar _assignValue = __webpack_require__(62);\n\nvar _assignValue2 = _interopRequireDefault(_assignValue);\n\nvar _baseAssign = __webpack_require__(411);\n\nvar _baseAssign2 = _interopRequireDefault(_baseAssign);\n\nvar _cloneBuffer = __webpack_require__(431);\n\nvar _cloneBuffer2 = _interopRequireDefault(_cloneBuffer);\n\nvar _copyArray = __webpack_require__(206);\n\nvar _copyArray2 = _interopRequireDefault(_copyArray);\n\nvar _copySymbols = __webpack_require__(439);\n\nvar _copySymbols2 = _interopRequireDefault(_copySymbols);\n\nvar _getAllKeys = __webpack_require__(445);\n\nvar _getAllKeys2 = _interopRequireDefault(_getAllKeys);\n\nvar _getTag = __webpack_require__(141);\n\nvar _getTag2 = _interopRequireDefault(_getTag);\n\nvar _initCloneArray = __webpack_require__(454);\n\nvar _initCloneArray2 = _interopRequireDefault(_initCloneArray);\n\nvar _initCloneByTag = __webpack_require__(455);\n\nvar _initCloneByTag2 = _interopRequireDefault(_initCloneByTag);\n\nvar _initCloneObject = __webpack_require__(456);\n\nvar _initCloneObject2 = _interopRequireDefault(_initCloneObject);\n\nvar _isArray = __webpack_require__(11);\n\nvar _isArray2 = _interopRequireDefault(_isArray);\n\nvar _isBuffer = __webpack_require__(486);\n\nvar _isBuffer2 = _interopRequireDefault(_isBuffer);\n\nvar _isHostObject = __webpack_require__(89);\n\nvar _isHostObject2 = _interopRequireDefault(_isHostObject);\n\nvar _isObject = __webpack_require__(13);\n\nvar _isObject2 = _interopRequireDefault(_isObject);\n\nvar _keys = __webpack_require__(64);\n\nvar _keys2 = _interopRequireDefault(_keys);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** `Object#toString` result references. */\nvar argsTag = '[object Arguments]',\n    arrayTag = '[object Array]',\n    boolTag = '[object Boolean]',\n    dateTag = '[object Date]',\n    errorTag = '[object Error]',\n    funcTag = '[object Function]',\n    genTag = '[object GeneratorFunction]',\n    mapTag = '[object Map]',\n    numberTag = '[object Number]',\n    objectTag = '[object Object]',\n    regexpTag = '[object RegExp]',\n    setTag = '[object Set]',\n    stringTag = '[object String]',\n    symbolTag = '[object Symbol]',\n    weakMapTag = '[object WeakMap]';\n\nvar arrayBufferTag = '[object ArrayBuffer]',\n    dataViewTag = '[object DataView]',\n    float32Tag = '[object Float32Array]',\n    float64Tag = '[object Float64Array]',\n    int8Tag = '[object Int8Array]',\n    int16Tag = '[object Int16Array]',\n    int32Tag = '[object Int32Array]',\n    uint8Tag = '[object Uint8Array]',\n    uint8ClampedTag = '[object Uint8ClampedArray]',\n    uint16Tag = '[object Uint16Array]',\n    uint32Tag = '[object Uint32Array]';\n\n/** Used to identify `toStringTag` values supported by `_.clone`. */\nvar cloneableTags = {};\ncloneableTags[argsTag] = cloneableTags[arrayTag] = cloneableTags[arrayBufferTag] = cloneableTags[dataViewTag] = cloneableTags[boolTag] = cloneableTags[dateTag] = cloneableTags[float32Tag] = cloneableTags[float64Tag] = cloneableTags[int8Tag] = cloneableTags[int16Tag] = cloneableTags[int32Tag] = cloneableTags[mapTag] = cloneableTags[numberTag] = cloneableTags[objectTag] = cloneableTags[regexpTag] = cloneableTags[setTag] = cloneableTags[stringTag] = cloneableTags[symbolTag] = cloneableTags[uint8Tag] = cloneableTags[uint8ClampedTag] = cloneableTags[uint16Tag] = cloneableTags[uint32Tag] = true;\ncloneableTags[errorTag] = cloneableTags[funcTag] = cloneableTags[weakMapTag] = false;\n\n/**\n * The base implementation of `_.clone` and `_.cloneDeep` which tracks\n * traversed objects.\n *\n * @private\n * @param {*} value The value to clone.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @param {boolean} [isFull] Specify a clone including symbols.\n * @param {Function} [customizer] The function to customize cloning.\n * @param {string} [key] The key of `value`.\n * @param {Object} [object] The parent object of `value`.\n * @param {Object} [stack] Tracks traversed objects and their clone counterparts.\n * @returns {*} Returns the cloned value.\n */\nfunction baseClone(value, isDeep, isFull, customizer, key, object, stack) {\n  var result;\n  if (customizer) {\n    result = object ? customizer(value, key, object, stack) : customizer(value);\n  }\n  if (result !== undefined) {\n    return result;\n  }\n  if (!(0, _isObject2.default)(value)) {\n    return value;\n  }\n  var isArr = (0, _isArray2.default)(value);\n  if (isArr) {\n    result = (0, _initCloneArray2.default)(value);\n    if (!isDeep) {\n      return (0, _copyArray2.default)(value, result);\n    }\n  } else {\n    var tag = (0, _getTag2.default)(value),\n        isFunc = tag == funcTag || tag == genTag;\n\n    if ((0, _isBuffer2.default)(value)) {\n      return (0, _cloneBuffer2.default)(value, isDeep);\n    }\n    if (tag == objectTag || tag == argsTag || isFunc && !object) {\n      if ((0, _isHostObject2.default)(value)) {\n        return object ? value : {};\n      }\n      result = (0, _initCloneObject2.default)(isFunc ? {} : value);\n      if (!isDeep) {\n        return (0, _copySymbols2.default)(value, (0, _baseAssign2.default)(result, value));\n      }\n    } else {\n      if (!cloneableTags[tag]) {\n        return object ? value : {};\n      }\n      result = (0, _initCloneByTag2.default)(value, tag, baseClone, isDeep);\n    }\n  }\n  // Check for circular references and return its corresponding clone.\n  stack || (stack = new _Stack2.default());\n  var stacked = stack.get(value);\n  if (stacked) {\n    return stacked;\n  }\n  stack.set(value, result);\n\n  if (!isArr) {\n    var props = isFull ? (0, _getAllKeys2.default)(value) : (0, _keys2.default)(value);\n  }\n  // Recursively populate clone (susceptible to call stack limits).\n  (0, _arrayEach2.default)(props || value, function (subValue, key) {\n    if (props) {\n      key = subValue;\n      subValue = value[key];\n    }\n    (0, _assignValue2.default)(result, key, baseClone(subValue, isDeep, isFull, customizer, key, value, stack));\n  });\n  return result;\n}\n\nexports.default = baseClone;\n\n/***/ }),\n/* 200 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * The base implementation of `_.findIndex` and `_.findLastIndex` without\n * support for iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to search.\n * @param {Function} predicate The function invoked per iteration.\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\nfunction baseFindIndex(array, predicate, fromRight) {\n  var length = array.length,\n      index = fromRight ? length : -1;\n\n  while (fromRight ? index-- : ++index < length) {\n    if (predicate(array[index], index, array)) {\n      return index;\n    }\n  }\n  return -1;\n}\n\nexports.default = baseFindIndex;\n\n/***/ }),\n/* 201 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; };\n\nvar _getPrototype = __webpack_require__(140);\n\nvar _getPrototype2 = _interopRequireDefault(_getPrototype);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/**\n * The base implementation of `_.has` without support for deep paths.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array|string} key The key to check.\n * @returns {boolean} Returns `true` if `key` exists, else `false`.\n */\nfunction baseHas(object, key) {\n  // Avoid a bug in IE 10-11 where objects with a [[Prototype]] of `null`,\n  // that are composed entirely of index properties, return `false` for\n  // `hasOwnProperty` checks of them.\n  return hasOwnProperty.call(object, key) || (typeof object === 'undefined' ? 'undefined' : _typeof(object)) == 'object' && key in object && (0, _getPrototype2.default)(object) === null;\n}\n\nexports.default = baseHas;\n\n/***/ }),\n/* 202 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _castPath = __webpack_require__(87);\n\nvar _castPath2 = _interopRequireDefault(_castPath);\n\nvar _isIndex = __webpack_require__(35);\n\nvar _isIndex2 = _interopRequireDefault(_isIndex);\n\nvar _isKey = __webpack_require__(50);\n\nvar _isKey2 = _interopRequireDefault(_isKey);\n\nvar _last = __webpack_require__(18);\n\nvar _last2 = _interopRequireDefault(_last);\n\nvar _parent = __webpack_require__(470);\n\nvar _parent2 = _interopRequireDefault(_parent);\n\nvar _toKey = __webpack_require__(51);\n\nvar _toKey2 = _interopRequireDefault(_toKey);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** Used for built-in method references. */\nvar arrayProto = Array.prototype;\n\n/** Built-in value references. */\nvar splice = arrayProto.splice;\n\n/**\n * The base implementation of `_.pullAt` without support for individual\n * indexes or capturing the removed elements.\n *\n * @private\n * @param {Array} array The array to modify.\n * @param {number[]} indexes The indexes of elements to remove.\n * @returns {Array} Returns `array`.\n */\nfunction basePullAt(array, indexes) {\n  var length = array ? indexes.length : 0,\n      lastIndex = length - 1;\n\n  while (length--) {\n    var index = indexes[length];\n    if (length == lastIndex || index !== previous) {\n      var previous = index;\n      if ((0, _isIndex2.default)(index)) {\n        splice.call(array, index, 1);\n      } else if (!(0, _isKey2.default)(index, array)) {\n        var path = (0, _castPath2.default)(index),\n            object = (0, _parent2.default)(array, path);\n\n        if (object != null) {\n          delete object[(0, _toKey2.default)((0, _last2.default)(path))];\n        }\n      } else {\n        delete array[(0, _toKey2.default)(index)];\n      }\n    }\n  }\n  return array;\n}\n\nexports.default = basePullAt;\n\n/***/ }),\n/* 203 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _eq = __webpack_require__(52);\n\nvar _eq2 = _interopRequireDefault(_eq);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * The base implementation of `_.sortedUniq` and `_.sortedUniqBy` without\n * support for iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @returns {Array} Returns the new duplicate free array.\n */\nfunction baseSortedUniq(array, iteratee) {\n  var index = -1,\n      length = array.length,\n      resIndex = 0,\n      result = [];\n\n  while (++index < length) {\n    var value = array[index],\n        computed = iteratee ? iteratee(value) : value;\n\n    if (!index || !(0, _eq2.default)(computed, seen)) {\n      var seen = computed;\n      result[resIndex++] = value === 0 ? 0 : value;\n    }\n  }\n  return result;\n}\n\nexports.default = baseSortedUniq;\n\n/***/ }),\n/* 204 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * The base implementation of `_.times` without support for iteratee shorthands\n * or max array length checks.\n *\n * @private\n * @param {number} n The number of times to invoke `iteratee`.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array} Returns the array of results.\n */\nfunction baseTimes(n, iteratee) {\n  var index = -1,\n      result = Array(n);\n\n  while (++index < n) {\n    result[index] = iteratee(index);\n  }\n  return result;\n}\n\nexports.default = baseTimes;\n\n/***/ }),\n/* 205 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * This base implementation of `_.zipObject` which assigns values using `assignFunc`.\n *\n * @private\n * @param {Array} props The property identifiers.\n * @param {Array} values The property values.\n * @param {Function} assignFunc The function to assign values.\n * @returns {Object} Returns the new object.\n */\nfunction baseZipObject(props, values, assignFunc) {\n  var index = -1,\n      length = props.length,\n      valsLength = values.length,\n      result = {};\n\n  while (++index < length) {\n    var value = index < valsLength ? values[index] : undefined;\n    assignFunc(result, props[index], value);\n  }\n  return result;\n}\n\nexports.default = baseZipObject;\n\n/***/ }),\n/* 206 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * Copies the values of `source` to `array`.\n *\n * @private\n * @param {Array} source The array to copy values from.\n * @param {Array} [array=[]] The array to copy values to.\n * @returns {Array} Returns `array`.\n */\nfunction copyArray(source, array) {\n  var index = -1,\n      length = source.length;\n\n  array || (array = Array(length));\n  while (++index < length) {\n    array[index] = source[index];\n  }\n  return array;\n}\n\nexports.default = copyArray;\n\n/***/ }),\n/* 207 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _SetCache = __webpack_require__(81);\n\nvar _SetCache2 = _interopRequireDefault(_SetCache);\n\nvar _arraySome = __webpack_require__(410);\n\nvar _arraySome2 = _interopRequireDefault(_arraySome);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** Used to compose bitmasks for comparison styles. */\nvar UNORDERED_COMPARE_FLAG = 1,\n    PARTIAL_COMPARE_FLAG = 2;\n\n/**\n * A specialized version of `baseIsEqualDeep` for arrays with support for\n * partial deep comparisons.\n *\n * @private\n * @param {Array} array The array to compare.\n * @param {Array} other The other array to compare.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Function} customizer The function to customize comparisons.\n * @param {number} bitmask The bitmask of comparison flags. See `baseIsEqual`\n *  for more details.\n * @param {Object} stack Tracks traversed `array` and `other` objects.\n * @returns {boolean} Returns `true` if the arrays are equivalent, else `false`.\n */\nfunction equalArrays(array, other, equalFunc, customizer, bitmask, stack) {\n  var isPartial = bitmask & PARTIAL_COMPARE_FLAG,\n      arrLength = array.length,\n      othLength = other.length;\n\n  if (arrLength != othLength && !(isPartial && othLength > arrLength)) {\n    return false;\n  }\n  // Assume cyclic values are equal.\n  var stacked = stack.get(array);\n  if (stacked) {\n    return stacked == other;\n  }\n  var index = -1,\n      result = true,\n      seen = bitmask & UNORDERED_COMPARE_FLAG ? new _SetCache2.default() : undefined;\n\n  stack.set(array, other);\n\n  // Ignore non-index properties.\n  while (++index < arrLength) {\n    var arrValue = array[index],\n        othValue = other[index];\n\n    if (customizer) {\n      var compared = isPartial ? customizer(othValue, arrValue, index, other, array, stack) : customizer(arrValue, othValue, index, array, other, stack);\n    }\n    if (compared !== undefined) {\n      if (compared) {\n        continue;\n      }\n      result = false;\n      break;\n    }\n    // Recursively compare arrays (susceptible to call stack limits).\n    if (seen) {\n      if (!(0, _arraySome2.default)(other, function (othValue, othIndex) {\n        if (!seen.has(othIndex) && (arrValue === othValue || equalFunc(arrValue, othValue, customizer, bitmask, stack))) {\n          return seen.add(othIndex);\n        }\n      })) {\n        result = false;\n        break;\n      }\n    } else if (!(arrValue === othValue || equalFunc(arrValue, othValue, customizer, bitmask, stack))) {\n      result = false;\n      break;\n    }\n  }\n  stack['delete'](array);\n  return result;\n}\n\nexports.default = equalArrays;\n\n/***/ }),\n/* 208 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/** Built-in value references. */\nvar getOwnPropertySymbols = Object.getOwnPropertySymbols;\n\n/**\n * Creates an array of the own enumerable symbol properties of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of symbols.\n */\nfunction getSymbols(object) {\n  // Coerce `object` to an object to avoid non-object errors in V8.\n  // See https://bugs.chromium.org/p/v8/issues/detail?id=3443 for more details.\n  return getOwnPropertySymbols(Object(object));\n}\n\n// Fallback for IE < 11.\nif (!getOwnPropertySymbols) {\n  getSymbols = function getSymbols() {\n    return [];\n  };\n}\n\nexports.default = getSymbols;\n\n/***/ }),\n/* 209 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseTimes = __webpack_require__(204);\n\nvar _baseTimes2 = _interopRequireDefault(_baseTimes);\n\nvar _isArguments = __webpack_require__(147);\n\nvar _isArguments2 = _interopRequireDefault(_isArguments);\n\nvar _isArray = __webpack_require__(11);\n\nvar _isArray2 = _interopRequireDefault(_isArray);\n\nvar _isLength = __webpack_require__(96);\n\nvar _isLength2 = _interopRequireDefault(_isLength);\n\nvar _isString = __webpack_require__(149);\n\nvar _isString2 = _interopRequireDefault(_isString);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Creates an array of index keys for `object` values of arrays,\n * `arguments` objects, and strings, otherwise `null` is returned.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array|null} Returns index keys, else `null`.\n */\nfunction indexKeys(object) {\n  var length = object ? object.length : undefined;\n  if ((0, _isLength2.default)(length) && ((0, _isArray2.default)(object) || (0, _isString2.default)(object) || (0, _isArguments2.default)(object))) {\n    return (0, _baseTimes2.default)(length, String);\n  }\n  return null;\n}\n\nexports.default = indexKeys;\n\n/***/ }),\n/* 210 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * Gets the index at which the first occurrence of `NaN` is found in `array`.\n *\n * @private\n * @param {Array} array The array to search.\n * @param {number} fromIndex The index to search from.\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {number} Returns the index of the matched `NaN`, else `-1`.\n */\nfunction indexOfNaN(array, fromIndex, fromRight) {\n  var length = array.length,\n      index = fromIndex + (fromRight ? 0 : -1);\n\n  while (fromRight ? index-- : ++index < length) {\n    var other = array[index];\n    if (other !== other) {\n      return index;\n    }\n  }\n  return -1;\n}\n\nexports.default = indexOfNaN;\n\n/***/ }),\n/* 211 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _isObject = __webpack_require__(13);\n\nvar _isObject2 = _interopRequireDefault(_isObject);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Checks if `value` is suitable for strict equality comparisons, i.e. `===`.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` if suitable for strict\n *  equality comparisons, else `false`.\n */\nfunction isStrictComparable(value) {\n  return value === value && !(0, _isObject2.default)(value);\n}\n\nexports.default = isStrictComparable;\n\n/***/ }),\n/* 212 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * A specialized version of `matchesProperty` for source values suitable\n * for strict equality comparisons, i.e. `===`.\n *\n * @private\n * @param {string} key The key of the property to get.\n * @param {*} srcValue The value to match.\n * @returns {Function} Returns the new spec function.\n */\nfunction matchesStrictComparable(key, srcValue) {\n  return function (object) {\n    if (object == null) {\n      return false;\n    }\n    return object[key] === srcValue && (srcValue !== undefined || key in Object(object));\n  };\n}\n\nexports.default = matchesStrictComparable;\n\n/***/ }),\n/* 213 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/** Used to resolve the decompiled source of functions. */\nvar funcToString = Function.prototype.toString;\n\n/**\n * Converts `func` to its source code.\n *\n * @private\n * @param {Function} func The function to process.\n * @returns {string} Returns the source code.\n */\nfunction toSource(func) {\n  if (func != null) {\n    try {\n      return funcToString.call(func);\n    } catch (e) {}\n    try {\n      return func + '';\n    } catch (e) {}\n  }\n  return '';\n}\n\nexports.default = toSource;\n\n/***/ }),\n/* 214 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseSlice = __webpack_require__(34);\n\nvar _baseSlice2 = _interopRequireDefault(_baseSlice);\n\nvar _isIterateeCall = __webpack_require__(90);\n\nvar _isIterateeCall2 = _interopRequireDefault(_isIterateeCall);\n\nvar _toInteger = __webpack_require__(14);\n\nvar _toInteger2 = _interopRequireDefault(_toInteger);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeCeil = Math.ceil,\n    nativeMax = Math.max;\n\n/**\n * Creates an array of elements split into groups the length of `size`.\n * If `array` can't be split evenly, the final chunk will be the remaining\n * elements.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to process.\n * @param {number} [size=1] The length of each chunk\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the new array of chunks.\n * @example\n *\n * _.chunk(['a', 'b', 'c', 'd'], 2);\n * // => [['a', 'b'], ['c', 'd']]\n *\n * _.chunk(['a', 'b', 'c', 'd'], 3);\n * // => [['a', 'b', 'c'], ['d']]\n */\nfunction chunk(array, size, guard) {\n  if (guard ? (0, _isIterateeCall2.default)(array, size, guard) : size === undefined) {\n    size = 1;\n  } else {\n    size = nativeMax((0, _toInteger2.default)(size), 0);\n  }\n  var length = array ? array.length : 0;\n  if (!length || size < 1) {\n    return [];\n  }\n  var index = 0,\n      resIndex = 0,\n      result = Array(nativeCeil(length / size));\n\n  while (index < length) {\n    result[resIndex++] = (0, _baseSlice2.default)(array, index, index += size);\n  }\n  return result;\n}\n\nexports.default = chunk;\n\n/***/ }),\n/* 215 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * Creates an array with all falsey values removed. The values `false`, `null`,\n * `0`, `\"\"`, `undefined`, and `NaN` are falsey.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to compact.\n * @returns {Array} Returns the new array of filtered values.\n * @example\n *\n * _.compact([0, 1, false, 2, '', 3]);\n * // => [1, 2, 3]\n */\nfunction compact(array) {\n  var index = -1,\n      length = array ? array.length : 0,\n      resIndex = 0,\n      result = [];\n\n  while (++index < length) {\n    var value = array[index];\n    if (value) {\n      result[resIndex++] = value;\n    }\n  }\n  return result;\n}\n\nexports.default = compact;\n\n/***/ }),\n/* 216 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _arrayPush = __webpack_require__(83);\n\nvar _arrayPush2 = _interopRequireDefault(_arrayPush);\n\nvar _baseFlatten = __webpack_require__(22);\n\nvar _baseFlatten2 = _interopRequireDefault(_baseFlatten);\n\nvar _copyArray = __webpack_require__(206);\n\nvar _copyArray2 = _interopRequireDefault(_copyArray);\n\nvar _isArray = __webpack_require__(11);\n\nvar _isArray2 = _interopRequireDefault(_isArray);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Creates a new array concatenating `array` with any additional arrays\n * and/or values.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to concatenate.\n * @param {...*} [values] The values to concatenate.\n * @returns {Array} Returns the new concatenated array.\n * @example\n *\n * var array = [1];\n * var other = _.concat(array, 2, [3], [[4]]);\n *\n * console.log(other);\n * // => [1, 2, 3, [4]]\n *\n * console.log(array);\n * // => [1]\n */\nfunction concat() {\n  var length = arguments.length,\n      args = Array(length ? length - 1 : 0),\n      array = arguments[0],\n      index = length;\n\n  while (index--) {\n    args[index - 1] = arguments[index];\n  }\n  return length ? (0, _arrayPush2.default)((0, _isArray2.default)(array) ? (0, _copyArray2.default)(array) : [array], (0, _baseFlatten2.default)(args, 1)) : [];\n}\n\nexports.default = concat;\n\n/***/ }),\n/* 217 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseDifference = __webpack_require__(63);\n\nvar _baseDifference2 = _interopRequireDefault(_baseDifference);\n\nvar _baseFlatten = __webpack_require__(22);\n\nvar _baseFlatten2 = _interopRequireDefault(_baseFlatten);\n\nvar _isArrayLikeObject = __webpack_require__(12);\n\nvar _isArrayLikeObject2 = _interopRequireDefault(_isArrayLikeObject);\n\nvar _rest = __webpack_require__(9);\n\nvar _rest2 = _interopRequireDefault(_rest);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Creates an array of unique `array` values not included in the other given\n * arrays using [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)\n * for equality comparisons. The order of result values is determined by the\n * order they occur in the first array.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {...Array} [values] The values to exclude.\n * @returns {Array} Returns the new array of filtered values.\n * @see _.without, _.xor\n * @example\n *\n * _.difference([3, 2, 1], [4, 2]);\n * // => [3, 1]\n */\nvar difference = (0, _rest2.default)(function (array, values) {\n  return (0, _isArrayLikeObject2.default)(array) ? (0, _baseDifference2.default)(array, (0, _baseFlatten2.default)(values, 1, _isArrayLikeObject2.default, true)) : [];\n});\n\nexports.default = difference;\n\n/***/ }),\n/* 218 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseDifference = __webpack_require__(63);\n\nvar _baseDifference2 = _interopRequireDefault(_baseDifference);\n\nvar _baseFlatten = __webpack_require__(22);\n\nvar _baseFlatten2 = _interopRequireDefault(_baseFlatten);\n\nvar _baseIteratee = __webpack_require__(10);\n\nvar _baseIteratee2 = _interopRequireDefault(_baseIteratee);\n\nvar _isArrayLikeObject = __webpack_require__(12);\n\nvar _isArrayLikeObject2 = _interopRequireDefault(_isArrayLikeObject);\n\nvar _last = __webpack_require__(18);\n\nvar _last2 = _interopRequireDefault(_last);\n\nvar _rest = __webpack_require__(9);\n\nvar _rest2 = _interopRequireDefault(_rest);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * This method is like `_.difference` except that it accepts `iteratee` which\n * is invoked for each element of `array` and `values` to generate the criterion\n * by which they're compared. Result values are chosen from the first array.\n * The iteratee is invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {...Array} [values] The values to exclude.\n * @param {Array|Function|Object|string} [iteratee=_.identity]\n *  The iteratee invoked per element.\n * @returns {Array} Returns the new array of filtered values.\n * @example\n *\n * _.differenceBy([3.1, 2.2, 1.3], [4.4, 2.5], Math.floor);\n * // => [3.1, 1.3]\n *\n * // The `_.property` iteratee shorthand.\n * _.differenceBy([{ 'x': 2 }, { 'x': 1 }], [{ 'x': 1 }], 'x');\n * // => [{ 'x': 2 }]\n */\nvar differenceBy = (0, _rest2.default)(function (array, values) {\n  var iteratee = (0, _last2.default)(values);\n  if ((0, _isArrayLikeObject2.default)(iteratee)) {\n    iteratee = undefined;\n  }\n  return (0, _isArrayLikeObject2.default)(array) ? (0, _baseDifference2.default)(array, (0, _baseFlatten2.default)(values, 1, _isArrayLikeObject2.default, true), (0, _baseIteratee2.default)(iteratee)) : [];\n});\n\nexports.default = differenceBy;\n\n/***/ }),\n/* 219 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseDifference = __webpack_require__(63);\n\nvar _baseDifference2 = _interopRequireDefault(_baseDifference);\n\nvar _baseFlatten = __webpack_require__(22);\n\nvar _baseFlatten2 = _interopRequireDefault(_baseFlatten);\n\nvar _isArrayLikeObject = __webpack_require__(12);\n\nvar _isArrayLikeObject2 = _interopRequireDefault(_isArrayLikeObject);\n\nvar _last = __webpack_require__(18);\n\nvar _last2 = _interopRequireDefault(_last);\n\nvar _rest = __webpack_require__(9);\n\nvar _rest2 = _interopRequireDefault(_rest);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * This method is like `_.difference` except that it accepts `comparator`\n * which is invoked to compare elements of `array` to `values`. Result values\n * are chosen from the first array. The comparator is invoked with two arguments:\n * (arrVal, othVal).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {...Array} [values] The values to exclude.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of filtered values.\n * @example\n *\n * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n *\n * _.differenceWith(objects, [{ 'x': 1, 'y': 2 }], _.isEqual);\n * // => [{ 'x': 2, 'y': 1 }]\n */\nvar differenceWith = (0, _rest2.default)(function (array, values) {\n  var comparator = (0, _last2.default)(values);\n  if ((0, _isArrayLikeObject2.default)(comparator)) {\n    comparator = undefined;\n  }\n  return (0, _isArrayLikeObject2.default)(array) ? (0, _baseDifference2.default)(array, (0, _baseFlatten2.default)(values, 1, _isArrayLikeObject2.default, true), undefined, comparator) : [];\n});\n\nexports.default = differenceWith;\n\n/***/ }),\n/* 220 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseIteratee = __webpack_require__(10);\n\nvar _baseIteratee2 = _interopRequireDefault(_baseIteratee);\n\nvar _baseWhile = __webpack_require__(86);\n\nvar _baseWhile2 = _interopRequireDefault(_baseWhile);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Creates a slice of `array` excluding elements dropped from the end.\n * Elements are dropped until `predicate` returns falsey. The predicate is\n * invoked with three arguments: (value, index, array).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {Array|Function|Object|string} [predicate=_.identity]\n *  The function invoked per iteration.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * var users = [\n *   { 'user': 'barney',  'active': true },\n *   { 'user': 'fred',    'active': false },\n *   { 'user': 'pebbles', 'active': false }\n * ];\n *\n * _.dropRightWhile(users, function(o) { return !o.active; });\n * // => objects for ['barney']\n *\n * // The `_.matches` iteratee shorthand.\n * _.dropRightWhile(users, { 'user': 'pebbles', 'active': false });\n * // => objects for ['barney', 'fred']\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.dropRightWhile(users, ['active', false]);\n * // => objects for ['barney']\n *\n * // The `_.property` iteratee shorthand.\n * _.dropRightWhile(users, 'active');\n * // => objects for ['barney', 'fred', 'pebbles']\n */\nfunction dropRightWhile(array, predicate) {\n  return array && array.length ? (0, _baseWhile2.default)(array, (0, _baseIteratee2.default)(predicate, 3), true, true) : [];\n}\n\nexports.default = dropRightWhile;\n\n/***/ }),\n/* 221 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseIteratee = __webpack_require__(10);\n\nvar _baseIteratee2 = _interopRequireDefault(_baseIteratee);\n\nvar _baseWhile = __webpack_require__(86);\n\nvar _baseWhile2 = _interopRequireDefault(_baseWhile);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Creates a slice of `array` excluding elements dropped from the beginning.\n * Elements are dropped until `predicate` returns falsey. The predicate is\n * invoked with three arguments: (value, index, array).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {Array|Function|Object|string} [predicate=_.identity]\n *  The function invoked per iteration.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * var users = [\n *   { 'user': 'barney',  'active': false },\n *   { 'user': 'fred',    'active': false },\n *   { 'user': 'pebbles', 'active': true }\n * ];\n *\n * _.dropWhile(users, function(o) { return !o.active; });\n * // => objects for ['pebbles']\n *\n * // The `_.matches` iteratee shorthand.\n * _.dropWhile(users, { 'user': 'barney', 'active': false });\n * // => objects for ['fred', 'pebbles']\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.dropWhile(users, ['active', false]);\n * // => objects for ['pebbles']\n *\n * // The `_.property` iteratee shorthand.\n * _.dropWhile(users, 'active');\n * // => objects for ['barney', 'fred', 'pebbles']\n */\nfunction dropWhile(array, predicate) {\n  return array && array.length ? (0, _baseWhile2.default)(array, (0, _baseIteratee2.default)(predicate, 3), true) : [];\n}\n\nexports.default = dropWhile;\n\n/***/ }),\n/* 222 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseFill = __webpack_require__(415);\n\nvar _baseFill2 = _interopRequireDefault(_baseFill);\n\nvar _isIterateeCall = __webpack_require__(90);\n\nvar _isIterateeCall2 = _interopRequireDefault(_isIterateeCall);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Fills elements of `array` with `value` from `start` up to, but not\n * including, `end`.\n *\n * **Note:** This method mutates `array`.\n *\n * @static\n * @memberOf _\n * @since 3.2.0\n * @category Array\n * @param {Array} array The array to fill.\n * @param {*} value The value to fill `array` with.\n * @param {number} [start=0] The start position.\n * @param {number} [end=array.length] The end position.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = [1, 2, 3];\n *\n * _.fill(array, 'a');\n * console.log(array);\n * // => ['a', 'a', 'a']\n *\n * _.fill(Array(3), 2);\n * // => [2, 2, 2]\n *\n * _.fill([4, 6, 8, 10], '*', 1, 3);\n * // => [4, '*', '*', 10]\n */\nfunction fill(array, value, start, end) {\n  var length = array ? array.length : 0;\n  if (!length) {\n    return [];\n  }\n  if (start && typeof start != 'number' && (0, _isIterateeCall2.default)(array, value, start)) {\n    start = 0;\n    end = length;\n  }\n  return (0, _baseFill2.default)(array, value, start, end);\n}\n\nexports.default = fill;\n\n/***/ }),\n/* 223 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseFindIndex = __webpack_require__(200);\n\nvar _baseFindIndex2 = _interopRequireDefault(_baseFindIndex);\n\nvar _baseIteratee = __webpack_require__(10);\n\nvar _baseIteratee2 = _interopRequireDefault(_baseIteratee);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * This method is like `_.find` except that it returns the index of the first\n * element `predicate` returns truthy for instead of the element itself.\n *\n * @static\n * @memberOf _\n * @since 1.1.0\n * @category Array\n * @param {Array} array The array to search.\n * @param {Array|Function|Object|string} [predicate=_.identity]\n *  The function invoked per iteration.\n * @returns {number} Returns the index of the found element, else `-1`.\n * @example\n *\n * var users = [\n *   { 'user': 'barney',  'active': false },\n *   { 'user': 'fred',    'active': false },\n *   { 'user': 'pebbles', 'active': true }\n * ];\n *\n * _.findIndex(users, function(o) { return o.user == 'barney'; });\n * // => 0\n *\n * // The `_.matches` iteratee shorthand.\n * _.findIndex(users, { 'user': 'fred', 'active': false });\n * // => 1\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.findIndex(users, ['active', false]);\n * // => 0\n *\n * // The `_.property` iteratee shorthand.\n * _.findIndex(users, 'active');\n * // => 2\n */\nfunction findIndex(array, predicate) {\n  return array && array.length ? (0, _baseFindIndex2.default)(array, (0, _baseIteratee2.default)(predicate, 3)) : -1;\n}\n\nexports.default = findIndex;\n\n/***/ }),\n/* 224 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseFindIndex = __webpack_require__(200);\n\nvar _baseFindIndex2 = _interopRequireDefault(_baseFindIndex);\n\nvar _baseIteratee = __webpack_require__(10);\n\nvar _baseIteratee2 = _interopRequireDefault(_baseIteratee);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * This method is like `_.findIndex` except that it iterates over elements\n * of `collection` from right to left.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Array\n * @param {Array} array The array to search.\n * @param {Array|Function|Object|string} [predicate=_.identity]\n *  The function invoked per iteration.\n * @returns {number} Returns the index of the found element, else `-1`.\n * @example\n *\n * var users = [\n *   { 'user': 'barney',  'active': true },\n *   { 'user': 'fred',    'active': false },\n *   { 'user': 'pebbles', 'active': false }\n * ];\n *\n * _.findLastIndex(users, function(o) { return o.user == 'pebbles'; });\n * // => 2\n *\n * // The `_.matches` iteratee shorthand.\n * _.findLastIndex(users, { 'user': 'barney', 'active': true });\n * // => 0\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.findLastIndex(users, ['active', false]);\n * // => 2\n *\n * // The `_.property` iteratee shorthand.\n * _.findLastIndex(users, 'active');\n * // => 0\n */\nfunction findLastIndex(array, predicate) {\n  return array && array.length ? (0, _baseFindIndex2.default)(array, (0, _baseIteratee2.default)(predicate, 3), true) : -1;\n}\n\nexports.default = findLastIndex;\n\n/***/ }),\n/* 225 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _head = __webpack_require__(146);\n\nObject.defineProperty(exports, 'default', {\n  enumerable: true,\n  get: function get() {\n    return _interopRequireDefault(_head).default;\n  }\n});\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/***/ }),\n/* 226 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseFlatten = __webpack_require__(22);\n\nvar _baseFlatten2 = _interopRequireDefault(_baseFlatten);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Flattens `array` a single level deep.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to flatten.\n * @returns {Array} Returns the new flattened array.\n * @example\n *\n * _.flatten([1, [2, [3, [4]], 5]]);\n * // => [1, 2, [3, [4]], 5]\n */\nfunction flatten(array) {\n  var length = array ? array.length : 0;\n  return length ? (0, _baseFlatten2.default)(array, 1) : [];\n}\n\nexports.default = flatten;\n\n/***/ }),\n/* 227 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseFlatten = __webpack_require__(22);\n\nvar _baseFlatten2 = _interopRequireDefault(_baseFlatten);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** Used as references for various `Number` constants. */\nvar INFINITY = 1 / 0;\n\n/**\n * Recursively flattens `array`.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to flatten.\n * @returns {Array} Returns the new flattened array.\n * @example\n *\n * _.flattenDeep([1, [2, [3, [4]], 5]]);\n * // => [1, 2, 3, 4, 5]\n */\nfunction flattenDeep(array) {\n  var length = array ? array.length : 0;\n  return length ? (0, _baseFlatten2.default)(array, INFINITY) : [];\n}\n\nexports.default = flattenDeep;\n\n/***/ }),\n/* 228 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseFlatten = __webpack_require__(22);\n\nvar _baseFlatten2 = _interopRequireDefault(_baseFlatten);\n\nvar _toInteger = __webpack_require__(14);\n\nvar _toInteger2 = _interopRequireDefault(_toInteger);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Recursively flatten `array` up to `depth` times.\n *\n * @static\n * @memberOf _\n * @since 4.4.0\n * @category Array\n * @param {Array} array The array to flatten.\n * @param {number} [depth=1] The maximum recursion depth.\n * @returns {Array} Returns the new flattened array.\n * @example\n *\n * var array = [1, [2, [3, [4]], 5]];\n *\n * _.flattenDepth(array, 1);\n * // => [1, 2, [3, [4]], 5]\n *\n * _.flattenDepth(array, 2);\n * // => [1, 2, 3, [4], 5]\n */\nfunction flattenDepth(array, depth) {\n  var length = array ? array.length : 0;\n  if (!length) {\n    return [];\n  }\n  depth = depth === undefined ? 1 : (0, _toInteger2.default)(depth);\n  return (0, _baseFlatten2.default)(array, depth);\n}\n\nexports.default = flattenDepth;\n\n/***/ }),\n/* 229 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * The inverse of `_.toPairs`; this method returns an object composed\n * from key-value `pairs`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} pairs The key-value pairs.\n * @returns {Object} Returns the new object.\n * @example\n *\n * _.fromPairs([['fred', 30], ['barney', 40]]);\n * // => { 'fred': 30, 'barney': 40 }\n */\nfunction fromPairs(pairs) {\n  var index = -1,\n      length = pairs ? pairs.length : 0,\n      result = {};\n\n  while (++index < length) {\n    var pair = pairs[index];\n    result[pair[0]] = pair[1];\n  }\n  return result;\n}\n\nexports.default = fromPairs;\n\n/***/ }),\n/* 230 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseGet = __webpack_require__(127);\n\nvar _baseGet2 = _interopRequireDefault(_baseGet);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Gets the value at `path` of `object`. If the resolved value is\n * `undefined`, the `defaultValue` is used in its place.\n *\n * @static\n * @memberOf _\n * @since 3.7.0\n * @category Object\n * @param {Object} object The object to query.\n * @param {Array|string} path The path of the property to get.\n * @param {*} [defaultValue] The value returned for `undefined` resolved values.\n * @returns {*} Returns the resolved value.\n * @example\n *\n * var object = { 'a': [{ 'b': { 'c': 3 } }] };\n *\n * _.get(object, 'a[0].b.c');\n * // => 3\n *\n * _.get(object, ['a', '0', 'b', 'c']);\n * // => 3\n *\n * _.get(object, 'a.b.c', 'default');\n * // => 'default'\n */\nfunction get(object, path, defaultValue) {\n  var result = object == null ? undefined : (0, _baseGet2.default)(object, path);\n  return result === undefined ? defaultValue : result;\n}\n\nexports.default = get;\n\n/***/ }),\n/* 231 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * This method returns the first argument given to it.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Util\n * @param {*} value Any value.\n * @returns {*} Returns `value`.\n * @example\n *\n * var object = { 'user': 'fred' };\n *\n * _.identity(object) === object;\n * // => true\n */\nfunction identity(value) {\n  return value;\n}\n\nexports.default = identity;\n\n/***/ }),\n/* 232 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseIndexOf = __webpack_require__(128);\n\nvar _baseIndexOf2 = _interopRequireDefault(_baseIndexOf);\n\nvar _toInteger = __webpack_require__(14);\n\nvar _toInteger2 = _interopRequireDefault(_toInteger);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeMax = Math.max;\n\n/**\n * Gets the index at which the first occurrence of `value` is found in `array`\n * using [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)\n * for equality comparisons. If `fromIndex` is negative, it's used as the\n * offset from the end of `array`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to search.\n * @param {*} value The value to search for.\n * @param {number} [fromIndex=0] The index to search from.\n * @returns {number} Returns the index of the matched value, else `-1`.\n * @example\n *\n * _.indexOf([1, 2, 1, 2], 2);\n * // => 1\n *\n * // Search from the `fromIndex`.\n * _.indexOf([1, 2, 1, 2], 2, 2);\n * // => 3\n */\nfunction indexOf(array, value, fromIndex) {\n  var length = array ? array.length : 0;\n  if (!length) {\n    return -1;\n  }\n  fromIndex = (0, _toInteger2.default)(fromIndex);\n  if (fromIndex < 0) {\n    fromIndex = nativeMax(length + fromIndex, 0);\n  }\n  return (0, _baseIndexOf2.default)(array, value, fromIndex);\n}\n\nexports.default = indexOf;\n\n/***/ }),\n/* 233 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _dropRight = __webpack_require__(145);\n\nvar _dropRight2 = _interopRequireDefault(_dropRight);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Gets all but the last element of `array`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to query.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.initial([1, 2, 3]);\n * // => [1, 2]\n */\nfunction initial(array) {\n  return (0, _dropRight2.default)(array, 1);\n}\n\nexports.default = initial;\n\n/***/ }),\n/* 234 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _arrayMap = __webpack_require__(26);\n\nvar _arrayMap2 = _interopRequireDefault(_arrayMap);\n\nvar _baseIntersection = __webpack_require__(129);\n\nvar _baseIntersection2 = _interopRequireDefault(_baseIntersection);\n\nvar _castArrayLikeObject = __webpack_require__(137);\n\nvar _castArrayLikeObject2 = _interopRequireDefault(_castArrayLikeObject);\n\nvar _rest = __webpack_require__(9);\n\nvar _rest2 = _interopRequireDefault(_rest);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Creates an array of unique values that are included in all given arrays\n * using [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)\n * for equality comparisons. The order of result values is determined by the\n * order they occur in the first array.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @returns {Array} Returns the new array of intersecting values.\n * @example\n *\n * _.intersection([2, 1], [4, 2], [1, 2]);\n * // => [2]\n */\nvar intersection = (0, _rest2.default)(function (arrays) {\n  var mapped = (0, _arrayMap2.default)(arrays, _castArrayLikeObject2.default);\n  return mapped.length && mapped[0] === arrays[0] ? (0, _baseIntersection2.default)(mapped) : [];\n});\n\nexports.default = intersection;\n\n/***/ }),\n/* 235 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _arrayMap = __webpack_require__(26);\n\nvar _arrayMap2 = _interopRequireDefault(_arrayMap);\n\nvar _baseIntersection = __webpack_require__(129);\n\nvar _baseIntersection2 = _interopRequireDefault(_baseIntersection);\n\nvar _baseIteratee = __webpack_require__(10);\n\nvar _baseIteratee2 = _interopRequireDefault(_baseIteratee);\n\nvar _castArrayLikeObject = __webpack_require__(137);\n\nvar _castArrayLikeObject2 = _interopRequireDefault(_castArrayLikeObject);\n\nvar _last = __webpack_require__(18);\n\nvar _last2 = _interopRequireDefault(_last);\n\nvar _rest = __webpack_require__(9);\n\nvar _rest2 = _interopRequireDefault(_rest);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * This method is like `_.intersection` except that it accepts `iteratee`\n * which is invoked for each element of each `arrays` to generate the criterion\n * by which they're compared. Result values are chosen from the first array.\n * The iteratee is invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Array|Function|Object|string} [iteratee=_.identity]\n *  The iteratee invoked per element.\n * @returns {Array} Returns the new array of intersecting values.\n * @example\n *\n * _.intersectionBy([2.1, 1.2], [4.3, 2.4], Math.floor);\n * // => [2.1]\n *\n * // The `_.property` iteratee shorthand.\n * _.intersectionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');\n * // => [{ 'x': 1 }]\n */\nvar intersectionBy = (0, _rest2.default)(function (arrays) {\n  var iteratee = (0, _last2.default)(arrays),\n      mapped = (0, _arrayMap2.default)(arrays, _castArrayLikeObject2.default);\n\n  if (iteratee === (0, _last2.default)(mapped)) {\n    iteratee = undefined;\n  } else {\n    mapped.pop();\n  }\n  return mapped.length && mapped[0] === arrays[0] ? (0, _baseIntersection2.default)(mapped, (0, _baseIteratee2.default)(iteratee)) : [];\n});\n\nexports.default = intersectionBy;\n\n/***/ }),\n/* 236 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _arrayMap = __webpack_require__(26);\n\nvar _arrayMap2 = _interopRequireDefault(_arrayMap);\n\nvar _baseIntersection = __webpack_require__(129);\n\nvar _baseIntersection2 = _interopRequireDefault(_baseIntersection);\n\nvar _castArrayLikeObject = __webpack_require__(137);\n\nvar _castArrayLikeObject2 = _interopRequireDefault(_castArrayLikeObject);\n\nvar _last = __webpack_require__(18);\n\nvar _last2 = _interopRequireDefault(_last);\n\nvar _rest = __webpack_require__(9);\n\nvar _rest2 = _interopRequireDefault(_rest);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * This method is like `_.intersection` except that it accepts `comparator`\n * which is invoked to compare elements of `arrays`. Result values are chosen\n * from the first array. The comparator is invoked with two arguments:\n * (arrVal, othVal).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of intersecting values.\n * @example\n *\n * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];\n *\n * _.intersectionWith(objects, others, _.isEqual);\n * // => [{ 'x': 1, 'y': 2 }]\n */\nvar intersectionWith = (0, _rest2.default)(function (arrays) {\n  var comparator = (0, _last2.default)(arrays),\n      mapped = (0, _arrayMap2.default)(arrays, _castArrayLikeObject2.default);\n\n  if (comparator === (0, _last2.default)(mapped)) {\n    comparator = undefined;\n  } else {\n    mapped.pop();\n  }\n  return mapped.length && mapped[0] === arrays[0] ? (0, _baseIntersection2.default)(mapped, undefined, comparator) : [];\n});\n\nexports.default = intersectionWith;\n\n/***/ }),\n/* 237 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _isFunction = __webpack_require__(148);\n\nvar _isFunction2 = _interopRequireDefault(_isFunction);\n\nvar _isHostObject = __webpack_require__(89);\n\nvar _isHostObject2 = _interopRequireDefault(_isHostObject);\n\nvar _isObject = __webpack_require__(13);\n\nvar _isObject2 = _interopRequireDefault(_isObject);\n\nvar _toSource = __webpack_require__(213);\n\nvar _toSource2 = _interopRequireDefault(_toSource);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Used to match `RegExp`\n * [syntax characters](http://ecma-international.org/ecma-262/6.0/#sec-patterns).\n */\nvar reRegExpChar = /[\\\\^$.*+?()[\\]{}|]/g;\n\n/** Used to detect host constructors (Safari). */\nvar reIsHostCtor = /^\\[object .+?Constructor\\]$/;\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to resolve the decompiled source of functions. */\nvar funcToString = Function.prototype.toString;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/** Used to detect if a method is native. */\nvar reIsNative = RegExp('^' + funcToString.call(hasOwnProperty).replace(reRegExpChar, '\\\\$&').replace(/hasOwnProperty|(function).*?(?=\\\\\\()| for .+?(?=\\\\\\])/g, '$1.*?') + '$');\n\n/**\n * Checks if `value` is a native function.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a native function,\n *  else `false`.\n * @example\n *\n * _.isNative(Array.prototype.push);\n * // => true\n *\n * _.isNative(_);\n * // => false\n */\nfunction isNative(value) {\n  if (!(0, _isObject2.default)(value)) {\n    return false;\n  }\n  var pattern = (0, _isFunction2.default)(value) || (0, _isHostObject2.default)(value) ? reIsNative : reIsHostCtor;\n  return pattern.test((0, _toSource2.default)(value));\n}\n\nexports.default = isNative;\n\n/***/ }),\n/* 238 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/** Used for built-in method references. */\nvar arrayProto = Array.prototype;\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeJoin = arrayProto.join;\n\n/**\n * Converts all elements in `array` into a string separated by `separator`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to convert.\n * @param {string} [separator=','] The element separator.\n * @returns {string} Returns the joined string.\n * @example\n *\n * _.join(['a', 'b', 'c'], '~');\n * // => 'a~b~c'\n */\nfunction join(array, separator) {\n  return array ? nativeJoin.call(array, separator) : '';\n}\n\nexports.default = join;\n\n/***/ }),\n/* 239 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _indexOfNaN = __webpack_require__(210);\n\nvar _indexOfNaN2 = _interopRequireDefault(_indexOfNaN);\n\nvar _toInteger = __webpack_require__(14);\n\nvar _toInteger2 = _interopRequireDefault(_toInteger);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeMax = Math.max,\n    nativeMin = Math.min;\n\n/**\n * This method is like `_.indexOf` except that it iterates over elements of\n * `array` from right to left.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to search.\n * @param {*} value The value to search for.\n * @param {number} [fromIndex=array.length-1] The index to search from.\n * @returns {number} Returns the index of the matched value, else `-1`.\n * @example\n *\n * _.lastIndexOf([1, 2, 1, 2], 2);\n * // => 3\n *\n * // Search from the `fromIndex`.\n * _.lastIndexOf([1, 2, 1, 2], 2, 2);\n * // => 1\n */\nfunction lastIndexOf(array, value, fromIndex) {\n  var length = array ? array.length : 0;\n  if (!length) {\n    return -1;\n  }\n  var index = length;\n  if (fromIndex !== undefined) {\n    index = (0, _toInteger2.default)(fromIndex);\n    index = (index < 0 ? nativeMax(length + index, 0) : nativeMin(index, length - 1)) + 1;\n  }\n  if (value !== value) {\n    return (0, _indexOfNaN2.default)(array, index, true);\n  }\n  while (index--) {\n    if (array[index] === value) {\n      return index;\n    }\n  }\n  return -1;\n}\n\nexports.default = lastIndexOf;\n\n/***/ }),\n/* 240 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseNth = __webpack_require__(425);\n\nvar _baseNth2 = _interopRequireDefault(_baseNth);\n\nvar _toInteger = __webpack_require__(14);\n\nvar _toInteger2 = _interopRequireDefault(_toInteger);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Gets the element at `n` index of `array`. If `n` is negative, the nth\n * element from the end is returned.\n *\n * @static\n * @memberOf _\n * @since 4.11.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {number} [n=0] The index of the element to return.\n * @returns {*} Returns the nth element of `array`.\n * @example\n *\n * var array = ['a', 'b', 'c', 'd'];\n *\n * _.nth(array, 1);\n * // => 'b'\n *\n * _.nth(array, -2);\n * // => 'c';\n */\nfunction nth(array, n) {\n  return array && array.length ? (0, _baseNth2.default)(array, (0, _toInteger2.default)(n)) : undefined;\n}\n\nexports.default = nth;\n\n/***/ }),\n/* 241 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _pullAll = __webpack_require__(150);\n\nvar _pullAll2 = _interopRequireDefault(_pullAll);\n\nvar _rest = __webpack_require__(9);\n\nvar _rest2 = _interopRequireDefault(_rest);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Removes all given values from `array` using\n * [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)\n * for equality comparisons.\n *\n * **Note:** Unlike `_.without`, this method mutates `array`. Use `_.remove`\n * to remove elements from an array by predicate.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {...*} [values] The values to remove.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = [1, 2, 3, 1, 2, 3];\n *\n * _.pull(array, 2, 3);\n * console.log(array);\n * // => [1, 1]\n */\nvar pull = (0, _rest2.default)(_pullAll2.default);\n\nexports.default = pull;\n\n/***/ }),\n/* 242 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseIteratee = __webpack_require__(10);\n\nvar _baseIteratee2 = _interopRequireDefault(_baseIteratee);\n\nvar _basePullAll = __webpack_require__(132);\n\nvar _basePullAll2 = _interopRequireDefault(_basePullAll);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * This method is like `_.pullAll` except that it accepts `iteratee` which is\n * invoked for each element of `array` and `values` to generate the criterion\n * by which they're compared. The iteratee is invoked with one argument: (value).\n *\n * **Note:** Unlike `_.differenceBy`, this method mutates `array`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {Array} values The values to remove.\n * @param {Array|Function|Object|string} [iteratee=_.identity]\n *  The iteratee invoked per element.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = [{ 'x': 1 }, { 'x': 2 }, { 'x': 3 }, { 'x': 1 }];\n *\n * _.pullAllBy(array, [{ 'x': 1 }, { 'x': 3 }], 'x');\n * console.log(array);\n * // => [{ 'x': 2 }]\n */\nfunction pullAllBy(array, values, iteratee) {\n  return array && array.length && values && values.length ? (0, _basePullAll2.default)(array, values, (0, _baseIteratee2.default)(iteratee)) : array;\n}\n\nexports.default = pullAllBy;\n\n/***/ }),\n/* 243 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _basePullAll = __webpack_require__(132);\n\nvar _basePullAll2 = _interopRequireDefault(_basePullAll);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * This method is like `_.pullAll` except that it accepts `comparator` which\n * is invoked to compare elements of `array` to `values`. The comparator is\n * invoked with two arguments: (arrVal, othVal).\n *\n * **Note:** Unlike `_.differenceWith`, this method mutates `array`.\n *\n * @static\n * @memberOf _\n * @since 4.6.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {Array} values The values to remove.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = [{ 'x': 1, 'y': 2 }, { 'x': 3, 'y': 4 }, { 'x': 5, 'y': 6 }];\n *\n * _.pullAllWith(array, [{ 'x': 3, 'y': 4 }], _.isEqual);\n * console.log(array);\n * // => [{ 'x': 1, 'y': 2 }, { 'x': 5, 'y': 6 }]\n */\nfunction pullAllWith(array, values, comparator) {\n  return array && array.length && values && values.length ? (0, _basePullAll2.default)(array, values, undefined, comparator) : array;\n}\n\nexports.default = pullAllWith;\n\n/***/ }),\n/* 244 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _arrayMap = __webpack_require__(26);\n\nvar _arrayMap2 = _interopRequireDefault(_arrayMap);\n\nvar _baseAt = __webpack_require__(412);\n\nvar _baseAt2 = _interopRequireDefault(_baseAt);\n\nvar _baseFlatten = __webpack_require__(22);\n\nvar _baseFlatten2 = _interopRequireDefault(_baseFlatten);\n\nvar _basePullAt = __webpack_require__(202);\n\nvar _basePullAt2 = _interopRequireDefault(_basePullAt);\n\nvar _compareAscending = __webpack_require__(438);\n\nvar _compareAscending2 = _interopRequireDefault(_compareAscending);\n\nvar _isIndex = __webpack_require__(35);\n\nvar _isIndex2 = _interopRequireDefault(_isIndex);\n\nvar _rest = __webpack_require__(9);\n\nvar _rest2 = _interopRequireDefault(_rest);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Removes elements from `array` corresponding to `indexes` and returns an\n * array of removed elements.\n *\n * **Note:** Unlike `_.at`, this method mutates `array`.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {...(number|number[])} [indexes] The indexes of elements to remove.\n * @returns {Array} Returns the new array of removed elements.\n * @example\n *\n * var array = [5, 10, 15, 20];\n * var evens = _.pullAt(array, 1, 3);\n *\n * console.log(array);\n * // => [5, 15]\n *\n * console.log(evens);\n * // => [10, 20]\n */\nvar pullAt = (0, _rest2.default)(function (array, indexes) {\n  indexes = (0, _baseFlatten2.default)(indexes, 1);\n\n  var length = array ? array.length : 0,\n      result = (0, _baseAt2.default)(array, indexes);\n\n  (0, _basePullAt2.default)(array, (0, _arrayMap2.default)(indexes, function (index) {\n    return (0, _isIndex2.default)(index, length) ? +index : index;\n  }).sort(_compareAscending2.default));\n\n  return result;\n});\n\nexports.default = pullAt;\n\n/***/ }),\n/* 245 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseIteratee = __webpack_require__(10);\n\nvar _baseIteratee2 = _interopRequireDefault(_baseIteratee);\n\nvar _basePullAt = __webpack_require__(202);\n\nvar _basePullAt2 = _interopRequireDefault(_basePullAt);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Removes all elements from `array` that `predicate` returns truthy for\n * and returns an array of the removed elements. The predicate is invoked\n * with three arguments: (value, index, array).\n *\n * **Note:** Unlike `_.filter`, this method mutates `array`. Use `_.pull`\n * to pull elements from an array by value.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {Array|Function|Object|string} [predicate=_.identity]\n *  The function invoked per iteration.\n * @returns {Array} Returns the new array of removed elements.\n * @example\n *\n * var array = [1, 2, 3, 4];\n * var evens = _.remove(array, function(n) {\n *   return n % 2 == 0;\n * });\n *\n * console.log(array);\n * // => [1, 3]\n *\n * console.log(evens);\n * // => [2, 4]\n */\nfunction remove(array, predicate) {\n  var result = [];\n  if (!(array && array.length)) {\n    return result;\n  }\n  var index = -1,\n      indexes = [],\n      length = array.length;\n\n  predicate = (0, _baseIteratee2.default)(predicate, 3);\n  while (++index < length) {\n    var value = array[index];\n    if (predicate(value, index, array)) {\n      result.push(value);\n      indexes.push(index);\n    }\n  }\n  (0, _basePullAt2.default)(array, indexes);\n  return result;\n}\n\nexports.default = remove;\n\n/***/ }),\n/* 246 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/** Used for built-in method references. */\nvar arrayProto = Array.prototype;\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeReverse = arrayProto.reverse;\n\n/**\n * Reverses `array` so that the first element becomes the last, the second\n * element becomes the second to last, and so on.\n *\n * **Note:** This method mutates `array` and is based on\n * [`Array#reverse`](https://mdn.io/Array/reverse).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = [1, 2, 3];\n *\n * _.reverse(array);\n * // => [3, 2, 1]\n *\n * console.log(array);\n * // => [3, 2, 1]\n */\nfunction reverse(array) {\n  return array ? nativeReverse.call(array) : array;\n}\n\nexports.default = reverse;\n\n/***/ }),\n/* 247 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseSlice = __webpack_require__(34);\n\nvar _baseSlice2 = _interopRequireDefault(_baseSlice);\n\nvar _isIterateeCall = __webpack_require__(90);\n\nvar _isIterateeCall2 = _interopRequireDefault(_isIterateeCall);\n\nvar _toInteger = __webpack_require__(14);\n\nvar _toInteger2 = _interopRequireDefault(_toInteger);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Creates a slice of `array` from `start` up to, but not including, `end`.\n *\n * **Note:** This method is used instead of\n * [`Array#slice`](https://mdn.io/Array/slice) to ensure dense arrays are\n * returned.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to slice.\n * @param {number} [start=0] The start position.\n * @param {number} [end=array.length] The end position.\n * @returns {Array} Returns the slice of `array`.\n */\nfunction slice(array, start, end) {\n  var length = array ? array.length : 0;\n  if (!length) {\n    return [];\n  }\n  if (end && typeof end != 'number' && (0, _isIterateeCall2.default)(array, start, end)) {\n    start = 0;\n    end = length;\n  } else {\n    start = start == null ? 0 : (0, _toInteger2.default)(start);\n    end = end === undefined ? length : (0, _toInteger2.default)(end);\n  }\n  return (0, _baseSlice2.default)(array, start, end);\n}\n\nexports.default = slice;\n\n/***/ }),\n/* 248 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseSortedIndex = __webpack_require__(85);\n\nvar _baseSortedIndex2 = _interopRequireDefault(_baseSortedIndex);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Uses a binary search to determine the lowest index at which `value`\n * should be inserted into `array` in order to maintain its sort order.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @returns {number} Returns the index at which `value` should be inserted\n *  into `array`.\n * @example\n *\n * _.sortedIndex([30, 50], 40);\n * // => 1\n *\n * _.sortedIndex([4, 5], 4);\n * // => 0\n */\nfunction sortedIndex(array, value) {\n  return (0, _baseSortedIndex2.default)(array, value);\n}\n\nexports.default = sortedIndex;\n\n/***/ }),\n/* 249 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseIteratee = __webpack_require__(10);\n\nvar _baseIteratee2 = _interopRequireDefault(_baseIteratee);\n\nvar _baseSortedIndexBy = __webpack_require__(133);\n\nvar _baseSortedIndexBy2 = _interopRequireDefault(_baseSortedIndexBy);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * This method is like `_.sortedIndex` except that it accepts `iteratee`\n * which is invoked for `value` and each element of `array` to compute their\n * sort ranking. The iteratee is invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @param {Array|Function|Object|string} [iteratee=_.identity]\n *  The iteratee invoked per element.\n * @returns {number} Returns the index at which `value` should be inserted\n *  into `array`.\n * @example\n *\n * var dict = { 'thirty': 30, 'forty': 40, 'fifty': 50 };\n *\n * _.sortedIndexBy(['thirty', 'fifty'], 'forty', _.propertyOf(dict));\n * // => 1\n *\n * // The `_.property` iteratee shorthand.\n * _.sortedIndexBy([{ 'x': 4 }, { 'x': 5 }], { 'x': 4 }, 'x');\n * // => 0\n */\nfunction sortedIndexBy(array, value, iteratee) {\n  return (0, _baseSortedIndexBy2.default)(array, value, (0, _baseIteratee2.default)(iteratee));\n}\n\nexports.default = sortedIndexBy;\n\n/***/ }),\n/* 250 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseSortedIndex = __webpack_require__(85);\n\nvar _baseSortedIndex2 = _interopRequireDefault(_baseSortedIndex);\n\nvar _eq = __webpack_require__(52);\n\nvar _eq2 = _interopRequireDefault(_eq);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * This method is like `_.indexOf` except that it performs a binary\n * search on a sorted `array`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to search.\n * @param {*} value The value to search for.\n * @returns {number} Returns the index of the matched value, else `-1`.\n * @example\n *\n * _.sortedIndexOf([1, 1, 2, 2], 2);\n * // => 2\n */\nfunction sortedIndexOf(array, value) {\n  var length = array ? array.length : 0;\n  if (length) {\n    var index = (0, _baseSortedIndex2.default)(array, value);\n    if (index < length && (0, _eq2.default)(array[index], value)) {\n      return index;\n    }\n  }\n  return -1;\n}\n\nexports.default = sortedIndexOf;\n\n/***/ }),\n/* 251 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseSortedIndex = __webpack_require__(85);\n\nvar _baseSortedIndex2 = _interopRequireDefault(_baseSortedIndex);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * This method is like `_.sortedIndex` except that it returns the highest\n * index at which `value` should be inserted into `array` in order to\n * maintain its sort order.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @returns {number} Returns the index at which `value` should be inserted\n *  into `array`.\n * @example\n *\n * _.sortedLastIndex([4, 5], 4);\n * // => 1\n */\nfunction sortedLastIndex(array, value) {\n  return (0, _baseSortedIndex2.default)(array, value, true);\n}\n\nexports.default = sortedLastIndex;\n\n/***/ }),\n/* 252 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseIteratee = __webpack_require__(10);\n\nvar _baseIteratee2 = _interopRequireDefault(_baseIteratee);\n\nvar _baseSortedIndexBy = __webpack_require__(133);\n\nvar _baseSortedIndexBy2 = _interopRequireDefault(_baseSortedIndexBy);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * This method is like `_.sortedLastIndex` except that it accepts `iteratee`\n * which is invoked for `value` and each element of `array` to compute their\n * sort ranking. The iteratee is invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @param {Array|Function|Object|string} [iteratee=_.identity]\n *  The iteratee invoked per element.\n * @returns {number} Returns the index at which `value` should be inserted\n *  into `array`.\n * @example\n *\n * // The `_.property` iteratee shorthand.\n * _.sortedLastIndexBy([{ 'x': 4 }, { 'x': 5 }], { 'x': 4 }, 'x');\n * // => 1\n */\nfunction sortedLastIndexBy(array, value, iteratee) {\n  return (0, _baseSortedIndexBy2.default)(array, value, (0, _baseIteratee2.default)(iteratee), true);\n}\n\nexports.default = sortedLastIndexBy;\n\n/***/ }),\n/* 253 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseSortedIndex = __webpack_require__(85);\n\nvar _baseSortedIndex2 = _interopRequireDefault(_baseSortedIndex);\n\nvar _eq = __webpack_require__(52);\n\nvar _eq2 = _interopRequireDefault(_eq);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * This method is like `_.lastIndexOf` except that it performs a binary\n * search on a sorted `array`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to search.\n * @param {*} value The value to search for.\n * @returns {number} Returns the index of the matched value, else `-1`.\n * @example\n *\n * _.sortedLastIndexOf([1, 1, 2, 2], 2);\n * // => 3\n */\nfunction sortedLastIndexOf(array, value) {\n  var length = array ? array.length : 0;\n  if (length) {\n    var index = (0, _baseSortedIndex2.default)(array, value, true) - 1;\n    if ((0, _eq2.default)(array[index], value)) {\n      return index;\n    }\n  }\n  return -1;\n}\n\nexports.default = sortedLastIndexOf;\n\n/***/ }),\n/* 254 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseSortedUniq = __webpack_require__(203);\n\nvar _baseSortedUniq2 = _interopRequireDefault(_baseSortedUniq);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * This method is like `_.uniq` except that it's designed and optimized\n * for sorted arrays.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @returns {Array} Returns the new duplicate free array.\n * @example\n *\n * _.sortedUniq([1, 1, 2]);\n * // => [1, 2]\n */\nfunction sortedUniq(array) {\n  return array && array.length ? (0, _baseSortedUniq2.default)(array) : [];\n}\n\nexports.default = sortedUniq;\n\n/***/ }),\n/* 255 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseIteratee = __webpack_require__(10);\n\nvar _baseIteratee2 = _interopRequireDefault(_baseIteratee);\n\nvar _baseSortedUniq = __webpack_require__(203);\n\nvar _baseSortedUniq2 = _interopRequireDefault(_baseSortedUniq);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * This method is like `_.uniqBy` except that it's designed and optimized\n * for sorted arrays.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @returns {Array} Returns the new duplicate free array.\n * @example\n *\n * _.sortedUniqBy([1.1, 1.2, 2.3, 2.4], Math.floor);\n * // => [1.1, 2.3]\n */\nfunction sortedUniqBy(array, iteratee) {\n  return array && array.length ? (0, _baseSortedUniq2.default)(array, (0, _baseIteratee2.default)(iteratee)) : [];\n}\n\nexports.default = sortedUniqBy;\n\n/***/ }),\n/* 256 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _drop = __webpack_require__(144);\n\nvar _drop2 = _interopRequireDefault(_drop);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Gets all but the first element of `array`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.tail([1, 2, 3]);\n * // => [2, 3]\n */\nfunction tail(array) {\n  return (0, _drop2.default)(array, 1);\n}\n\nexports.default = tail;\n\n/***/ }),\n/* 257 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseSlice = __webpack_require__(34);\n\nvar _baseSlice2 = _interopRequireDefault(_baseSlice);\n\nvar _toInteger = __webpack_require__(14);\n\nvar _toInteger2 = _interopRequireDefault(_toInteger);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Creates a slice of `array` with `n` elements taken from the beginning.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {number} [n=1] The number of elements to take.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.take([1, 2, 3]);\n * // => [1]\n *\n * _.take([1, 2, 3], 2);\n * // => [1, 2]\n *\n * _.take([1, 2, 3], 5);\n * // => [1, 2, 3]\n *\n * _.take([1, 2, 3], 0);\n * // => []\n */\nfunction take(array, n, guard) {\n  if (!(array && array.length)) {\n    return [];\n  }\n  n = guard || n === undefined ? 1 : (0, _toInteger2.default)(n);\n  return (0, _baseSlice2.default)(array, 0, n < 0 ? 0 : n);\n}\n\nexports.default = take;\n\n/***/ }),\n/* 258 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseSlice = __webpack_require__(34);\n\nvar _baseSlice2 = _interopRequireDefault(_baseSlice);\n\nvar _toInteger = __webpack_require__(14);\n\nvar _toInteger2 = _interopRequireDefault(_toInteger);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Creates a slice of `array` with `n` elements taken from the end.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {number} [n=1] The number of elements to take.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.takeRight([1, 2, 3]);\n * // => [3]\n *\n * _.takeRight([1, 2, 3], 2);\n * // => [2, 3]\n *\n * _.takeRight([1, 2, 3], 5);\n * // => [1, 2, 3]\n *\n * _.takeRight([1, 2, 3], 0);\n * // => []\n */\nfunction takeRight(array, n, guard) {\n  var length = array ? array.length : 0;\n  if (!length) {\n    return [];\n  }\n  n = guard || n === undefined ? 1 : (0, _toInteger2.default)(n);\n  n = length - n;\n  return (0, _baseSlice2.default)(array, n < 0 ? 0 : n, length);\n}\n\nexports.default = takeRight;\n\n/***/ }),\n/* 259 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseIteratee = __webpack_require__(10);\n\nvar _baseIteratee2 = _interopRequireDefault(_baseIteratee);\n\nvar _baseWhile = __webpack_require__(86);\n\nvar _baseWhile2 = _interopRequireDefault(_baseWhile);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Creates a slice of `array` with elements taken from the end. Elements are\n * taken until `predicate` returns falsey. The predicate is invoked with\n * three arguments: (value, index, array).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {Array|Function|Object|string} [predicate=_.identity]\n *  The function invoked per iteration.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * var users = [\n *   { 'user': 'barney',  'active': true },\n *   { 'user': 'fred',    'active': false },\n *   { 'user': 'pebbles', 'active': false }\n * ];\n *\n * _.takeRightWhile(users, function(o) { return !o.active; });\n * // => objects for ['fred', 'pebbles']\n *\n * // The `_.matches` iteratee shorthand.\n * _.takeRightWhile(users, { 'user': 'pebbles', 'active': false });\n * // => objects for ['pebbles']\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.takeRightWhile(users, ['active', false]);\n * // => objects for ['fred', 'pebbles']\n *\n * // The `_.property` iteratee shorthand.\n * _.takeRightWhile(users, 'active');\n * // => []\n */\nfunction takeRightWhile(array, predicate) {\n  return array && array.length ? (0, _baseWhile2.default)(array, (0, _baseIteratee2.default)(predicate, 3), false, true) : [];\n}\n\nexports.default = takeRightWhile;\n\n/***/ }),\n/* 260 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseIteratee = __webpack_require__(10);\n\nvar _baseIteratee2 = _interopRequireDefault(_baseIteratee);\n\nvar _baseWhile = __webpack_require__(86);\n\nvar _baseWhile2 = _interopRequireDefault(_baseWhile);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Creates a slice of `array` with elements taken from the beginning. Elements\n * are taken until `predicate` returns falsey. The predicate is invoked with\n * three arguments: (value, index, array).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {Array|Function|Object|string} [predicate=_.identity]\n *  The function invoked per iteration.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * var users = [\n *   { 'user': 'barney',  'active': false },\n *   { 'user': 'fred',    'active': false},\n *   { 'user': 'pebbles', 'active': true }\n * ];\n *\n * _.takeWhile(users, function(o) { return !o.active; });\n * // => objects for ['barney', 'fred']\n *\n * // The `_.matches` iteratee shorthand.\n * _.takeWhile(users, { 'user': 'barney', 'active': false });\n * // => objects for ['barney']\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.takeWhile(users, ['active', false]);\n * // => objects for ['barney', 'fred']\n *\n * // The `_.property` iteratee shorthand.\n * _.takeWhile(users, 'active');\n * // => []\n */\nfunction takeWhile(array, predicate) {\n  return array && array.length ? (0, _baseWhile2.default)(array, (0, _baseIteratee2.default)(predicate, 3)) : [];\n}\n\nexports.default = takeWhile;\n\n/***/ }),\n/* 261 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _isFunction = __webpack_require__(148);\n\nvar _isFunction2 = _interopRequireDefault(_isFunction);\n\nvar _isObject = __webpack_require__(13);\n\nvar _isObject2 = _interopRequireDefault(_isObject);\n\nvar _isSymbol = __webpack_require__(44);\n\nvar _isSymbol2 = _interopRequireDefault(_isSymbol);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** Used as references for various `Number` constants. */\nvar NAN = 0 / 0;\n\n/** Used to match leading and trailing whitespace. */\nvar reTrim = /^\\s+|\\s+$/g;\n\n/** Used to detect bad signed hexadecimal string values. */\nvar reIsBadHex = /^[-+]0x[0-9a-f]+$/i;\n\n/** Used to detect binary string values. */\nvar reIsBinary = /^0b[01]+$/i;\n\n/** Used to detect octal string values. */\nvar reIsOctal = /^0o[0-7]+$/i;\n\n/** Built-in method references without a dependency on `root`. */\nvar freeParseInt = parseInt;\n\n/**\n * Converts `value` to a number.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to process.\n * @returns {number} Returns the number.\n * @example\n *\n * _.toNumber(3.2);\n * // => 3.2\n *\n * _.toNumber(Number.MIN_VALUE);\n * // => 5e-324\n *\n * _.toNumber(Infinity);\n * // => Infinity\n *\n * _.toNumber('3.2');\n * // => 3.2\n */\nfunction toNumber(value) {\n  if (typeof value == 'number') {\n    return value;\n  }\n  if ((0, _isSymbol2.default)(value)) {\n    return NAN;\n  }\n  if ((0, _isObject2.default)(value)) {\n    var other = (0, _isFunction2.default)(value.valueOf) ? value.valueOf() : value;\n    value = (0, _isObject2.default)(other) ? other + '' : other;\n  }\n  if (typeof value != 'string') {\n    return value === 0 ? value : +value;\n  }\n  value = value.replace(reTrim, '');\n  var isBinary = reIsBinary.test(value);\n  return isBinary || reIsOctal.test(value) ? freeParseInt(value.slice(2), isBinary ? 2 : 8) : reIsBadHex.test(value) ? NAN : +value;\n}\n\nexports.default = toNumber;\n\n/***/ }),\n/* 262 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseFlatten = __webpack_require__(22);\n\nvar _baseFlatten2 = _interopRequireDefault(_baseFlatten);\n\nvar _baseUniq = __webpack_require__(42);\n\nvar _baseUniq2 = _interopRequireDefault(_baseUniq);\n\nvar _isArrayLikeObject = __webpack_require__(12);\n\nvar _isArrayLikeObject2 = _interopRequireDefault(_isArrayLikeObject);\n\nvar _rest = __webpack_require__(9);\n\nvar _rest2 = _interopRequireDefault(_rest);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Creates an array of unique values, in order, from all given arrays using\n * [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)\n * for equality comparisons.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @returns {Array} Returns the new array of combined values.\n * @example\n *\n * _.union([2, 1], [4, 2], [1, 2]);\n * // => [2, 1, 4]\n */\nvar union = (0, _rest2.default)(function (arrays) {\n  return (0, _baseUniq2.default)((0, _baseFlatten2.default)(arrays, 1, _isArrayLikeObject2.default, true));\n});\n\nexports.default = union;\n\n/***/ }),\n/* 263 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseFlatten = __webpack_require__(22);\n\nvar _baseFlatten2 = _interopRequireDefault(_baseFlatten);\n\nvar _baseIteratee = __webpack_require__(10);\n\nvar _baseIteratee2 = _interopRequireDefault(_baseIteratee);\n\nvar _baseUniq = __webpack_require__(42);\n\nvar _baseUniq2 = _interopRequireDefault(_baseUniq);\n\nvar _isArrayLikeObject = __webpack_require__(12);\n\nvar _isArrayLikeObject2 = _interopRequireDefault(_isArrayLikeObject);\n\nvar _last = __webpack_require__(18);\n\nvar _last2 = _interopRequireDefault(_last);\n\nvar _rest = __webpack_require__(9);\n\nvar _rest2 = _interopRequireDefault(_rest);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * This method is like `_.union` except that it accepts `iteratee` which is\n * invoked for each element of each `arrays` to generate the criterion by\n * which uniqueness is computed. The iteratee is invoked with one argument:\n * (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Array|Function|Object|string} [iteratee=_.identity]\n *  The iteratee invoked per element.\n * @returns {Array} Returns the new array of combined values.\n * @example\n *\n * _.unionBy([2.1, 1.2], [4.3, 2.4], Math.floor);\n * // => [2.1, 1.2, 4.3]\n *\n * // The `_.property` iteratee shorthand.\n * _.unionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');\n * // => [{ 'x': 1 }, { 'x': 2 }]\n */\nvar unionBy = (0, _rest2.default)(function (arrays) {\n  var iteratee = (0, _last2.default)(arrays);\n  if ((0, _isArrayLikeObject2.default)(iteratee)) {\n    iteratee = undefined;\n  }\n  return (0, _baseUniq2.default)((0, _baseFlatten2.default)(arrays, 1, _isArrayLikeObject2.default, true), (0, _baseIteratee2.default)(iteratee));\n});\n\nexports.default = unionBy;\n\n/***/ }),\n/* 264 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseFlatten = __webpack_require__(22);\n\nvar _baseFlatten2 = _interopRequireDefault(_baseFlatten);\n\nvar _baseUniq = __webpack_require__(42);\n\nvar _baseUniq2 = _interopRequireDefault(_baseUniq);\n\nvar _isArrayLikeObject = __webpack_require__(12);\n\nvar _isArrayLikeObject2 = _interopRequireDefault(_isArrayLikeObject);\n\nvar _last = __webpack_require__(18);\n\nvar _last2 = _interopRequireDefault(_last);\n\nvar _rest = __webpack_require__(9);\n\nvar _rest2 = _interopRequireDefault(_rest);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * This method is like `_.union` except that it accepts `comparator` which\n * is invoked to compare elements of `arrays`. The comparator is invoked\n * with two arguments: (arrVal, othVal).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of combined values.\n * @example\n *\n * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];\n *\n * _.unionWith(objects, others, _.isEqual);\n * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]\n */\nvar unionWith = (0, _rest2.default)(function (arrays) {\n  var comparator = (0, _last2.default)(arrays);\n  if ((0, _isArrayLikeObject2.default)(comparator)) {\n    comparator = undefined;\n  }\n  return (0, _baseUniq2.default)((0, _baseFlatten2.default)(arrays, 1, _isArrayLikeObject2.default, true), undefined, comparator);\n});\n\nexports.default = unionWith;\n\n/***/ }),\n/* 265 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseUniq = __webpack_require__(42);\n\nvar _baseUniq2 = _interopRequireDefault(_baseUniq);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Creates a duplicate-free version of an array, using\n * [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)\n * for equality comparisons, in which only the first occurrence of each\n * element is kept.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @returns {Array} Returns the new duplicate free array.\n * @example\n *\n * _.uniq([2, 1, 2]);\n * // => [2, 1]\n */\nfunction uniq(array) {\n  return array && array.length ? (0, _baseUniq2.default)(array) : [];\n}\n\nexports.default = uniq;\n\n/***/ }),\n/* 266 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseIteratee = __webpack_require__(10);\n\nvar _baseIteratee2 = _interopRequireDefault(_baseIteratee);\n\nvar _baseUniq = __webpack_require__(42);\n\nvar _baseUniq2 = _interopRequireDefault(_baseUniq);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * This method is like `_.uniq` except that it accepts `iteratee` which is\n * invoked for each element in `array` to generate the criterion by which\n * uniqueness is computed. The iteratee is invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {Array|Function|Object|string} [iteratee=_.identity]\n *  The iteratee invoked per element.\n * @returns {Array} Returns the new duplicate free array.\n * @example\n *\n * _.uniqBy([2.1, 1.2, 2.3], Math.floor);\n * // => [2.1, 1.2]\n *\n * // The `_.property` iteratee shorthand.\n * _.uniqBy([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x');\n * // => [{ 'x': 1 }, { 'x': 2 }]\n */\nfunction uniqBy(array, iteratee) {\n  return array && array.length ? (0, _baseUniq2.default)(array, (0, _baseIteratee2.default)(iteratee)) : [];\n}\n\nexports.default = uniqBy;\n\n/***/ }),\n/* 267 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseUniq = __webpack_require__(42);\n\nvar _baseUniq2 = _interopRequireDefault(_baseUniq);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * This method is like `_.uniq` except that it accepts `comparator` which\n * is invoked to compare elements of `array`. The comparator is invoked with\n * two arguments: (arrVal, othVal).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new duplicate free array.\n * @example\n *\n * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 },  { 'x': 1, 'y': 2 }];\n *\n * _.uniqWith(objects, _.isEqual);\n * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]\n */\nfunction uniqWith(array, comparator) {\n  return array && array.length ? (0, _baseUniq2.default)(array, undefined, comparator) : [];\n}\n\nexports.default = uniqWith;\n\n/***/ }),\n/* 268 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseDifference = __webpack_require__(63);\n\nvar _baseDifference2 = _interopRequireDefault(_baseDifference);\n\nvar _isArrayLikeObject = __webpack_require__(12);\n\nvar _isArrayLikeObject2 = _interopRequireDefault(_isArrayLikeObject);\n\nvar _rest = __webpack_require__(9);\n\nvar _rest2 = _interopRequireDefault(_rest);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Creates an array excluding all given values using\n * [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)\n * for equality comparisons.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {...*} [values] The values to exclude.\n * @returns {Array} Returns the new array of filtered values.\n * @see _.difference, _.xor\n * @example\n *\n * _.without([1, 2, 1, 3], 1, 2);\n * // => [3]\n */\nvar without = (0, _rest2.default)(function (array, values) {\n  return (0, _isArrayLikeObject2.default)(array) ? (0, _baseDifference2.default)(array, values) : [];\n});\n\nexports.default = without;\n\n/***/ }),\n/* 269 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _arrayFilter = __webpack_require__(82);\n\nvar _arrayFilter2 = _interopRequireDefault(_arrayFilter);\n\nvar _baseXor = __webpack_require__(135);\n\nvar _baseXor2 = _interopRequireDefault(_baseXor);\n\nvar _isArrayLikeObject = __webpack_require__(12);\n\nvar _isArrayLikeObject2 = _interopRequireDefault(_isArrayLikeObject);\n\nvar _rest = __webpack_require__(9);\n\nvar _rest2 = _interopRequireDefault(_rest);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Creates an array of unique values that is the\n * [symmetric difference](https://en.wikipedia.org/wiki/Symmetric_difference)\n * of the given arrays. The order of result values is determined by the order\n * they occur in the arrays.\n *\n * @static\n * @memberOf _\n * @since 2.4.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @returns {Array} Returns the new array of filtered values.\n * @see _.difference, _.without\n * @example\n *\n * _.xor([2, 1], [4, 2]);\n * // => [1, 4]\n */\nvar xor = (0, _rest2.default)(function (arrays) {\n  return (0, _baseXor2.default)((0, _arrayFilter2.default)(arrays, _isArrayLikeObject2.default));\n});\n\nexports.default = xor;\n\n/***/ }),\n/* 270 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _arrayFilter = __webpack_require__(82);\n\nvar _arrayFilter2 = _interopRequireDefault(_arrayFilter);\n\nvar _baseIteratee = __webpack_require__(10);\n\nvar _baseIteratee2 = _interopRequireDefault(_baseIteratee);\n\nvar _baseXor = __webpack_require__(135);\n\nvar _baseXor2 = _interopRequireDefault(_baseXor);\n\nvar _isArrayLikeObject = __webpack_require__(12);\n\nvar _isArrayLikeObject2 = _interopRequireDefault(_isArrayLikeObject);\n\nvar _last = __webpack_require__(18);\n\nvar _last2 = _interopRequireDefault(_last);\n\nvar _rest = __webpack_require__(9);\n\nvar _rest2 = _interopRequireDefault(_rest);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * This method is like `_.xor` except that it accepts `iteratee` which is\n * invoked for each element of each `arrays` to generate the criterion by\n * which by which they're compared. The iteratee is invoked with one argument:\n * (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Array|Function|Object|string} [iteratee=_.identity]\n *  The iteratee invoked per element.\n * @returns {Array} Returns the new array of filtered values.\n * @example\n *\n * _.xorBy([2.1, 1.2], [4.3, 2.4], Math.floor);\n * // => [1.2, 4.3]\n *\n * // The `_.property` iteratee shorthand.\n * _.xorBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');\n * // => [{ 'x': 2 }]\n */\nvar xorBy = (0, _rest2.default)(function (arrays) {\n  var iteratee = (0, _last2.default)(arrays);\n  if ((0, _isArrayLikeObject2.default)(iteratee)) {\n    iteratee = undefined;\n  }\n  return (0, _baseXor2.default)((0, _arrayFilter2.default)(arrays, _isArrayLikeObject2.default), (0, _baseIteratee2.default)(iteratee));\n});\n\nexports.default = xorBy;\n\n/***/ }),\n/* 271 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _arrayFilter = __webpack_require__(82);\n\nvar _arrayFilter2 = _interopRequireDefault(_arrayFilter);\n\nvar _baseXor = __webpack_require__(135);\n\nvar _baseXor2 = _interopRequireDefault(_baseXor);\n\nvar _isArrayLikeObject = __webpack_require__(12);\n\nvar _isArrayLikeObject2 = _interopRequireDefault(_isArrayLikeObject);\n\nvar _last = __webpack_require__(18);\n\nvar _last2 = _interopRequireDefault(_last);\n\nvar _rest = __webpack_require__(9);\n\nvar _rest2 = _interopRequireDefault(_rest);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * This method is like `_.xor` except that it accepts `comparator` which is\n * invoked to compare elements of `arrays`. The comparator is invoked with\n * two arguments: (arrVal, othVal).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of filtered values.\n * @example\n *\n * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];\n *\n * _.xorWith(objects, others, _.isEqual);\n * // => [{ 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]\n */\nvar xorWith = (0, _rest2.default)(function (arrays) {\n  var comparator = (0, _last2.default)(arrays);\n  if ((0, _isArrayLikeObject2.default)(comparator)) {\n    comparator = undefined;\n  }\n  return (0, _baseXor2.default)((0, _arrayFilter2.default)(arrays, _isArrayLikeObject2.default), undefined, comparator);\n});\n\nexports.default = xorWith;\n\n/***/ }),\n/* 272 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _rest = __webpack_require__(9);\n\nvar _rest2 = _interopRequireDefault(_rest);\n\nvar _unzip = __webpack_require__(98);\n\nvar _unzip2 = _interopRequireDefault(_unzip);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Creates an array of grouped elements, the first of which contains the\n * first elements of the given arrays, the second of which contains the\n * second elements of the given arrays, and so on.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {...Array} [arrays] The arrays to process.\n * @returns {Array} Returns the new array of grouped elements.\n * @example\n *\n * _.zip(['fred', 'barney'], [30, 40], [true, false]);\n * // => [['fred', 30, true], ['barney', 40, false]]\n */\nvar zip = (0, _rest2.default)(_unzip2.default);\n\nexports.default = zip;\n\n/***/ }),\n/* 273 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _assignValue = __webpack_require__(62);\n\nvar _assignValue2 = _interopRequireDefault(_assignValue);\n\nvar _baseZipObject = __webpack_require__(205);\n\nvar _baseZipObject2 = _interopRequireDefault(_baseZipObject);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * This method is like `_.fromPairs` except that it accepts two arrays,\n * one of property identifiers and one of corresponding values.\n *\n * @static\n * @memberOf _\n * @since 0.4.0\n * @category Array\n * @param {Array} [props=[]] The property identifiers.\n * @param {Array} [values=[]] The property values.\n * @returns {Object} Returns the new object.\n * @example\n *\n * _.zipObject(['a', 'b'], [1, 2]);\n * // => { 'a': 1, 'b': 2 }\n */\nfunction zipObject(props, values) {\n  return (0, _baseZipObject2.default)(props || [], values || [], _assignValue2.default);\n}\n\nexports.default = zipObject;\n\n/***/ }),\n/* 274 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseSet = __webpack_require__(427);\n\nvar _baseSet2 = _interopRequireDefault(_baseSet);\n\nvar _baseZipObject = __webpack_require__(205);\n\nvar _baseZipObject2 = _interopRequireDefault(_baseZipObject);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * This method is like `_.zipObject` except that it supports property paths.\n *\n * @static\n * @memberOf _\n * @since 4.1.0\n * @category Array\n * @param {Array} [props=[]] The property identifiers.\n * @param {Array} [values=[]] The property values.\n * @returns {Object} Returns the new object.\n * @example\n *\n * _.zipObjectDeep(['a.b[0].c', 'a.b[1].d'], [1, 2]);\n * // => { 'a': { 'b': [{ 'c': 1 }, { 'd': 2 }] } }\n */\nfunction zipObjectDeep(props, values) {\n  return (0, _baseZipObject2.default)(props || [], values || [], _baseSet2.default);\n}\n\nexports.default = zipObjectDeep;\n\n/***/ }),\n/* 275 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _rest = __webpack_require__(9);\n\nvar _rest2 = _interopRequireDefault(_rest);\n\nvar _unzipWith = __webpack_require__(151);\n\nvar _unzipWith2 = _interopRequireDefault(_unzipWith);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * This method is like `_.zip` except that it accepts `iteratee` to specify\n * how grouped values should be combined. The iteratee is invoked with the\n * elements of each group: (...group).\n *\n * @static\n * @memberOf _\n * @since 3.8.0\n * @category Array\n * @param {...Array} [arrays] The arrays to process.\n * @param {Function} [iteratee=_.identity] The function to combine grouped values.\n * @returns {Array} Returns the new array of grouped elements.\n * @example\n *\n * _.zipWith([1, 2], [10, 20], [100, 200], function(a, b, c) {\n *   return a + b + c;\n * });\n * // => [111, 222]\n */\nvar zipWith = (0, _rest2.default)(function (arrays) {\n  var length = arrays.length,\n      iteratee = length > 1 ? arrays[length - 1] : undefined;\n\n  iteratee = typeof iteratee == 'function' ? (arrays.pop(), iteratee) : undefined;\n  return (0, _unzipWith2.default)(arrays, iteratee);\n});\n\nexports.default = zipWith;\n\n/***/ }),\n/* 276 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = objectToMap;\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/objecttomap\n */\n\n/**\n * Transforms object to map.\n *\n *\t\tconst map = objectToMap( { 'foo': 1, 'bar': 2 } );\n *\t\tmap.get( 'foo' ); // 1\n *\n * @param {Object} obj Object to transform.\n * @returns {Map} Map created from object.\n */\nfunction objectToMap(obj) {\n  var map = new Map();\n\n  for (var key in obj) {\n    map.set(key, obj[key]);\n  }\n\n  return map;\n}\n\n/***/ }),\n/* 277 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.isCombiningMark = isCombiningMark;\nexports.isHighSurrogateHalf = isHighSurrogateHalf;\nexports.isLowSurrogateHalf = isLowSurrogateHalf;\nexports.isInsideSurrogatePair = isInsideSurrogatePair;\nexports.isInsideCombinedSymbol = isInsideCombinedSymbol;\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * Set of utils to handle unicode characters.\n *\n * @module utils/unicode\n */\n\n/**\n * Checks whether given `character` is a combining mark.\n *\n * @param {String} character Character to check.\n * @returns {Boolean}\n */\nfunction isCombiningMark(character) {\n  return !!character && character.length == 1 && /[\\u0300-\\u036f\\u1ab0-\\u1aff\\u1dc0-\\u1dff\\u20d0-\\u20ff\\ufe20-\\ufe2f]/.test(character);\n}\n\n/**\n * Checks whether given `character` is a high half of surrogate pair.\n *\n * Using UTF-16 terminology, a surrogate pair denotes UTF-16 character using two UTF-8 characters. The surrogate pair\n * consist of high surrogate pair character followed by low surrogate pair character.\n *\n * @param {String} character Character to check.\n * @returns {Boolean}\n */\nfunction isHighSurrogateHalf(character) {\n  return !!character && character.length == 1 && /[\\ud800-\\udbff]/.test(character);\n}\n\n/**\n * Checks whether given `character` is a low half of surrogate pair.\n *\n * Using UTF-16 terminology, a surrogate pair denotes UTF-16 character using two UTF-8 characters. The surrogate pair\n * consist of high surrogate pair character followed by low surrogate pair character.\n *\n * @param {String} character Character to check.\n * @returns {Boolean}\n */\nfunction isLowSurrogateHalf(character) {\n  return !!character && character.length == 1 && /[\\udc00-\\udfff]/.test(character);\n}\n\n/**\n * Checks whether given offset in a string is inside a surrogate pair (between two surrogate halves).\n *\n * @param {String} string String to check.\n * @param {Number} offset Offset to check.\n * @returns {Boolean}\n */\nfunction isInsideSurrogatePair(string, offset) {\n  return isHighSurrogateHalf(string.charAt(offset - 1)) && isLowSurrogateHalf(string.charAt(offset));\n}\n\n/**\n * Checks whether given offset in a string is between base character and combining mark or between two combining marks.\n *\n * @param {String} string String to check.\n * @param {Number} offset Offset to check.\n * @returns {Boolean}\n */\nfunction isInsideCombinedSymbol(string, offset) {\n  return isCombiningMark(string.charAt(offset));\n}\n\n/***/ }),\n/* 278 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nvar _classic = __webpack_require__(295);\n\nvar _classic2 = _interopRequireDefault(_classic);\n\nvar _autoformat = __webpack_require__(281);\n\nvar _autoformat2 = _interopRequireDefault(_autoformat);\n\nvar _article = __webpack_require__(358);\n\nvar _article2 = _interopRequireDefault(_article);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\ntry {\n\t_classic2.default.create(document.querySelector('#editor'), {\n\t\tplugins: [_autoformat2.default, _article2.default],\n\t\ttoolbar: ['headings', 'bold', 'italic', 'link', 'unlink', 'bulletedList', 'numberedList', 'undo', 'redo']\n\t}).then(function (editor) {\n\t\twindow.editor = editor;\n\t}).catch(function (err) {\n\t\tconsole.error(err.stack);\n\t});\n} catch (err) {\n\tshowCompatibilityMessage();\n} /**\n   * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n   */\n\nfunction showCompatibilityMessage() {\n\tvar editorElement = document.querySelector('#editor');\n\tvar message = document.createElement('p');\n\n\tmessage.innerHTML = '\\n\\t\\t<h2>That\\'s a shame...</h2>\\n\\t\\t<p>We\\'re not proud of this but this early developer preview does not work in your web browser.</p>\\n\\t\\t<p>Please consider using <a href=\"https://www.google.com/chrome/\">Google Chrome</a> instead.</p>\\n\\t\\t<p>We\\'re terribly sorry.</p>\\n\\t';\n\n\tmessage.classList.add('message');\n\n\teditorElement.style.display = 'none';\n\teditorElement.parentNode.insertBefore(message, editorElement);\n}\n\n/***/ }),\n/* 279 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n/* WEBPACK VAR INJECTION */(function(global, module, process) {\n\nvar _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; };\n\n/**\n * Copyright (c) 2014, Facebook, Inc.\n * All rights reserved.\n *\n * This source code is licensed under the BSD-style license found in the\n * https://raw.github.com/facebook/regenerator/master/LICENSE file. An\n * additional grant of patent rights can be found in the PATENTS file in\n * the same directory.\n */\n\n!function (global) {\n  \"use strict\";\n\n  var Op = Object.prototype;\n  var hasOwn = Op.hasOwnProperty;\n  var undefined; // More compressible than void 0.\n  var $Symbol = typeof Symbol === \"function\" ? Symbol : {};\n  var iteratorSymbol = $Symbol.iterator || \"@@iterator\";\n  var toStringTagSymbol = $Symbol.toStringTag || \"@@toStringTag\";\n\n  var inModule = ( false ? \"undefined\" : _typeof(module)) === \"object\";\n  var runtime = global.regeneratorRuntime;\n  if (runtime) {\n    if (inModule) {\n      // If regeneratorRuntime is defined globally and we're in a module,\n      // make the exports object identical to regeneratorRuntime.\n      module.exports = runtime;\n    }\n    // Don't bother evaluating the rest of this file if the runtime was\n    // already defined globally.\n    return;\n  }\n\n  // Define the runtime globally (as expected by generated code) as either\n  // module.exports (if we're in a module) or a new, empty object.\n  runtime = global.regeneratorRuntime = inModule ? module.exports : {};\n\n  function wrap(innerFn, outerFn, self, tryLocsList) {\n    // If outerFn provided and outerFn.prototype is a Generator, then outerFn.prototype instanceof Generator.\n    var protoGenerator = outerFn && outerFn.prototype instanceof Generator ? outerFn : Generator;\n    var generator = Object.create(protoGenerator.prototype);\n    var context = new Context(tryLocsList || []);\n\n    // The ._invoke method unifies the implementations of the .next,\n    // .throw, and .return methods.\n    generator._invoke = makeInvokeMethod(innerFn, self, context);\n\n    return generator;\n  }\n  runtime.wrap = wrap;\n\n  // Try/catch helper to minimize deoptimizations. Returns a completion\n  // record like context.tryEntries[i].completion. This interface could\n  // have been (and was previously) designed to take a closure to be\n  // invoked without arguments, but in all the cases we care about we\n  // already have an existing method we want to call, so there's no need\n  // to create a new function object. We can even get away with assuming\n  // the method takes exactly one argument, since that happens to be true\n  // in every case, so we don't have to touch the arguments object. The\n  // only additional allocation required is the completion record, which\n  // has a stable shape and so hopefully should be cheap to allocate.\n  function tryCatch(fn, obj, arg) {\n    try {\n      return { type: \"normal\", arg: fn.call(obj, arg) };\n    } catch (err) {\n      return { type: \"throw\", arg: err };\n    }\n  }\n\n  var GenStateSuspendedStart = \"suspendedStart\";\n  var GenStateSuspendedYield = \"suspendedYield\";\n  var GenStateExecuting = \"executing\";\n  var GenStateCompleted = \"completed\";\n\n  // Returning this object from the innerFn has the same effect as\n  // breaking out of the dispatch switch statement.\n  var ContinueSentinel = {};\n\n  // Dummy constructor functions that we use as the .constructor and\n  // .constructor.prototype properties for functions that return Generator\n  // objects. For full spec compliance, you may wish to configure your\n  // minifier not to mangle the names of these two functions.\n  function Generator() {}\n  function GeneratorFunction() {}\n  function GeneratorFunctionPrototype() {}\n\n  // This is a polyfill for %IteratorPrototype% for environments that\n  // don't natively support it.\n  var IteratorPrototype = {};\n  IteratorPrototype[iteratorSymbol] = function () {\n    return this;\n  };\n\n  var getProto = Object.getPrototypeOf;\n  var NativeIteratorPrototype = getProto && getProto(getProto(values([])));\n  if (NativeIteratorPrototype && NativeIteratorPrototype !== Op && hasOwn.call(NativeIteratorPrototype, iteratorSymbol)) {\n    // This environment has a native %IteratorPrototype%; use it instead\n    // of the polyfill.\n    IteratorPrototype = NativeIteratorPrototype;\n  }\n\n  var Gp = GeneratorFunctionPrototype.prototype = Generator.prototype = Object.create(IteratorPrototype);\n  GeneratorFunction.prototype = Gp.constructor = GeneratorFunctionPrototype;\n  GeneratorFunctionPrototype.constructor = GeneratorFunction;\n  GeneratorFunctionPrototype[toStringTagSymbol] = GeneratorFunction.displayName = \"GeneratorFunction\";\n\n  // Helper for defining the .next, .throw, and .return methods of the\n  // Iterator interface in terms of a single ._invoke method.\n  function defineIteratorMethods(prototype) {\n    [\"next\", \"throw\", \"return\"].forEach(function (method) {\n      prototype[method] = function (arg) {\n        return this._invoke(method, arg);\n      };\n    });\n  }\n\n  runtime.isGeneratorFunction = function (genFun) {\n    var ctor = typeof genFun === \"function\" && genFun.constructor;\n    return ctor ? ctor === GeneratorFunction ||\n    // For the native GeneratorFunction constructor, the best we can\n    // do is to check its .name property.\n    (ctor.displayName || ctor.name) === \"GeneratorFunction\" : false;\n  };\n\n  runtime.mark = function (genFun) {\n    if (Object.setPrototypeOf) {\n      Object.setPrototypeOf(genFun, GeneratorFunctionPrototype);\n    } else {\n      genFun.__proto__ = GeneratorFunctionPrototype;\n      if (!(toStringTagSymbol in genFun)) {\n        genFun[toStringTagSymbol] = \"GeneratorFunction\";\n      }\n    }\n    genFun.prototype = Object.create(Gp);\n    return genFun;\n  };\n\n  // Within the body of any async function, `await x` is transformed to\n  // `yield regeneratorRuntime.awrap(x)`, so that the runtime can test\n  // `hasOwn.call(value, \"__await\")` to determine if the yielded value is\n  // meant to be awaited.\n  runtime.awrap = function (arg) {\n    return { __await: arg };\n  };\n\n  function AsyncIterator(generator) {\n    function invoke(method, arg, resolve, reject) {\n      var record = tryCatch(generator[method], generator, arg);\n      if (record.type === \"throw\") {\n        reject(record.arg);\n      } else {\n        var result = record.arg;\n        var value = result.value;\n        if (value && (typeof value === \"undefined\" ? \"undefined\" : _typeof(value)) === \"object\" && hasOwn.call(value, \"__await\")) {\n          return Promise.resolve(value.__await).then(function (value) {\n            invoke(\"next\", value, resolve, reject);\n          }, function (err) {\n            invoke(\"throw\", err, resolve, reject);\n          });\n        }\n\n        return Promise.resolve(value).then(function (unwrapped) {\n          // When a yielded Promise is resolved, its final value becomes\n          // the .value of the Promise<{value,done}> result for the\n          // current iteration. If the Promise is rejected, however, the\n          // result for this iteration will be rejected with the same\n          // reason. Note that rejections of yielded Promises are not\n          // thrown back into the generator function, as is the case\n          // when an awaited Promise is rejected. This difference in\n          // behavior between yield and await is important, because it\n          // allows the consumer to decide what to do with the yielded\n          // rejection (swallow it and continue, manually .throw it back\n          // into the generator, abandon iteration, whatever). With\n          // await, by contrast, there is no opportunity to examine the\n          // rejection reason outside the generator function, so the\n          // only option is to throw it from the await expression, and\n          // let the generator function handle the exception.\n          result.value = unwrapped;\n          resolve(result);\n        }, reject);\n      }\n    }\n\n    if ((typeof process === \"undefined\" ? \"undefined\" : _typeof(process)) === \"object\" && process.domain) {\n      invoke = process.domain.bind(invoke);\n    }\n\n    var previousPromise;\n\n    function enqueue(method, arg) {\n      function callInvokeWithMethodAndArg() {\n        return new Promise(function (resolve, reject) {\n          invoke(method, arg, resolve, reject);\n        });\n      }\n\n      return previousPromise =\n      // If enqueue has been called before, then we want to wait until\n      // all previous Promises have been resolved before calling invoke,\n      // so that results are always delivered in the correct order. If\n      // enqueue has not been called before, then it is important to\n      // call invoke immediately, without waiting on a callback to fire,\n      // so that the async generator function has the opportunity to do\n      // any necessary setup in a predictable way. This predictability\n      // is why the Promise constructor synchronously invokes its\n      // executor callback, and why async functions synchronously\n      // execute code before the first await. Since we implement simple\n      // async functions in terms of async generators, it is especially\n      // important to get this right, even though it requires care.\n      previousPromise ? previousPromise.then(callInvokeWithMethodAndArg,\n      // Avoid propagating failures to Promises returned by later\n      // invocations of the iterator.\n      callInvokeWithMethodAndArg) : callInvokeWithMethodAndArg();\n    }\n\n    // Define the unified helper method that is used to implement .next,\n    // .throw, and .return (see defineIteratorMethods).\n    this._invoke = enqueue;\n  }\n\n  defineIteratorMethods(AsyncIterator.prototype);\n  runtime.AsyncIterator = AsyncIterator;\n\n  // Note that simple async functions are implemented on top of\n  // AsyncIterator objects; they just return a Promise for the value of\n  // the final result produced by the iterator.\n  runtime.async = function (innerFn, outerFn, self, tryLocsList) {\n    var iter = new AsyncIterator(wrap(innerFn, outerFn, self, tryLocsList));\n\n    return runtime.isGeneratorFunction(outerFn) ? iter // If outerFn is a generator, return the full iterator.\n    : iter.next().then(function (result) {\n      return result.done ? result.value : iter.next();\n    });\n  };\n\n  function makeInvokeMethod(innerFn, self, context) {\n    var state = GenStateSuspendedStart;\n\n    return function invoke(method, arg) {\n      if (state === GenStateExecuting) {\n        throw new Error(\"Generator is already running\");\n      }\n\n      if (state === GenStateCompleted) {\n        if (method === \"throw\") {\n          throw arg;\n        }\n\n        // Be forgiving, per 25.3.3.3.3 of the spec:\n        // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-generatorresume\n        return doneResult();\n      }\n\n      while (true) {\n        var delegate = context.delegate;\n        if (delegate) {\n          if (method === \"return\" || method === \"throw\" && delegate.iterator[method] === undefined) {\n            // A return or throw (when the delegate iterator has no throw\n            // method) always terminates the yield* loop.\n            context.delegate = null;\n\n            // If the delegate iterator has a return method, give it a\n            // chance to clean up.\n            var returnMethod = delegate.iterator[\"return\"];\n            if (returnMethod) {\n              var record = tryCatch(returnMethod, delegate.iterator, arg);\n              if (record.type === \"throw\") {\n                // If the return method threw an exception, let that\n                // exception prevail over the original return or throw.\n                method = \"throw\";\n                arg = record.arg;\n                continue;\n              }\n            }\n\n            if (method === \"return\") {\n              // Continue with the outer return, now that the delegate\n              // iterator has been terminated.\n              continue;\n            }\n          }\n\n          var record = tryCatch(delegate.iterator[method], delegate.iterator, arg);\n\n          if (record.type === \"throw\") {\n            context.delegate = null;\n\n            // Like returning generator.throw(uncaught), but without the\n            // overhead of an extra function call.\n            method = \"throw\";\n            arg = record.arg;\n            continue;\n          }\n\n          // Delegate generator ran and handled its own exceptions so\n          // regardless of what the method was, we continue as if it is\n          // \"next\" with an undefined arg.\n          method = \"next\";\n          arg = undefined;\n\n          var info = record.arg;\n          if (info.done) {\n            context[delegate.resultName] = info.value;\n            context.next = delegate.nextLoc;\n          } else {\n            state = GenStateSuspendedYield;\n            return info;\n          }\n\n          context.delegate = null;\n        }\n\n        if (method === \"next\") {\n          // Setting context._sent for legacy support of Babel's\n          // function.sent implementation.\n          context.sent = context._sent = arg;\n        } else if (method === \"throw\") {\n          if (state === GenStateSuspendedStart) {\n            state = GenStateCompleted;\n            throw arg;\n          }\n\n          if (context.dispatchException(arg)) {\n            // If the dispatched exception was caught by a catch block,\n            // then let that catch block handle the exception normally.\n            method = \"next\";\n            arg = undefined;\n          }\n        } else if (method === \"return\") {\n          context.abrupt(\"return\", arg);\n        }\n\n        state = GenStateExecuting;\n\n        var record = tryCatch(innerFn, self, context);\n        if (record.type === \"normal\") {\n          // If an exception is thrown from innerFn, we leave state ===\n          // GenStateExecuting and loop back for another invocation.\n          state = context.done ? GenStateCompleted : GenStateSuspendedYield;\n\n          var info = {\n            value: record.arg,\n            done: context.done\n          };\n\n          if (record.arg === ContinueSentinel) {\n            if (context.delegate && method === \"next\") {\n              // Deliberately forget the last sent value so that we don't\n              // accidentally pass it on to the delegate.\n              arg = undefined;\n            }\n          } else {\n            return info;\n          }\n        } else if (record.type === \"throw\") {\n          state = GenStateCompleted;\n          // Dispatch the exception by looping back around to the\n          // context.dispatchException(arg) call above.\n          method = \"throw\";\n          arg = record.arg;\n        }\n      }\n    };\n  }\n\n  // Define Generator.prototype.{next,throw,return} in terms of the\n  // unified ._invoke helper method.\n  defineIteratorMethods(Gp);\n\n  Gp[toStringTagSymbol] = \"Generator\";\n\n  Gp.toString = function () {\n    return \"[object Generator]\";\n  };\n\n  function pushTryEntry(locs) {\n    var entry = { tryLoc: locs[0] };\n\n    if (1 in locs) {\n      entry.catchLoc = locs[1];\n    }\n\n    if (2 in locs) {\n      entry.finallyLoc = locs[2];\n      entry.afterLoc = locs[3];\n    }\n\n    this.tryEntries.push(entry);\n  }\n\n  function resetTryEntry(entry) {\n    var record = entry.completion || {};\n    record.type = \"normal\";\n    delete record.arg;\n    entry.completion = record;\n  }\n\n  function Context(tryLocsList) {\n    // The root entry object (effectively a try statement without a catch\n    // or a finally block) gives us a place to store values thrown from\n    // locations where there is no enclosing try statement.\n    this.tryEntries = [{ tryLoc: \"root\" }];\n    tryLocsList.forEach(pushTryEntry, this);\n    this.reset(true);\n  }\n\n  runtime.keys = function (object) {\n    var keys = [];\n    for (var key in object) {\n      keys.push(key);\n    }\n    keys.reverse();\n\n    // Rather than returning an object with a next method, we keep\n    // things simple and return the next function itself.\n    return function next() {\n      while (keys.length) {\n        var key = keys.pop();\n        if (key in object) {\n          next.value = key;\n          next.done = false;\n          return next;\n        }\n      }\n\n      // To avoid creating an additional object, we just hang the .value\n      // and .done properties off the next function object itself. This\n      // also ensures that the minifier will not anonymize the function.\n      next.done = true;\n      return next;\n    };\n  };\n\n  function values(iterable) {\n    if (iterable) {\n      var iteratorMethod = iterable[iteratorSymbol];\n      if (iteratorMethod) {\n        return iteratorMethod.call(iterable);\n      }\n\n      if (typeof iterable.next === \"function\") {\n        return iterable;\n      }\n\n      if (!isNaN(iterable.length)) {\n        var i = -1,\n            next = function next() {\n          while (++i < iterable.length) {\n            if (hasOwn.call(iterable, i)) {\n              next.value = iterable[i];\n              next.done = false;\n              return next;\n            }\n          }\n\n          next.value = undefined;\n          next.done = true;\n\n          return next;\n        };\n\n        return next.next = next;\n      }\n    }\n\n    // Return an iterator with no values.\n    return { next: doneResult };\n  }\n  runtime.values = values;\n\n  function doneResult() {\n    return { value: undefined, done: true };\n  }\n\n  Context.prototype = {\n    constructor: Context,\n\n    reset: function reset(skipTempReset) {\n      this.prev = 0;\n      this.next = 0;\n      // Resetting context._sent for legacy support of Babel's\n      // function.sent implementation.\n      this.sent = this._sent = undefined;\n      this.done = false;\n      this.delegate = null;\n\n      this.tryEntries.forEach(resetTryEntry);\n\n      if (!skipTempReset) {\n        for (var name in this) {\n          // Not sure about the optimal order of these conditions:\n          if (name.charAt(0) === \"t\" && hasOwn.call(this, name) && !isNaN(+name.slice(1))) {\n            this[name] = undefined;\n          }\n        }\n      }\n    },\n\n    stop: function stop() {\n      this.done = true;\n\n      var rootEntry = this.tryEntries[0];\n      var rootRecord = rootEntry.completion;\n      if (rootRecord.type === \"throw\") {\n        throw rootRecord.arg;\n      }\n\n      return this.rval;\n    },\n\n    dispatchException: function dispatchException(exception) {\n      if (this.done) {\n        throw exception;\n      }\n\n      var context = this;\n      function handle(loc, caught) {\n        record.type = \"throw\";\n        record.arg = exception;\n        context.next = loc;\n        return !!caught;\n      }\n\n      for (var i = this.tryEntries.length - 1; i >= 0; --i) {\n        var entry = this.tryEntries[i];\n        var record = entry.completion;\n\n        if (entry.tryLoc === \"root\") {\n          // Exception thrown outside of any try block that could handle\n          // it, so set the completion value of the entire function to\n          // throw the exception.\n          return handle(\"end\");\n        }\n\n        if (entry.tryLoc <= this.prev) {\n          var hasCatch = hasOwn.call(entry, \"catchLoc\");\n          var hasFinally = hasOwn.call(entry, \"finallyLoc\");\n\n          if (hasCatch && hasFinally) {\n            if (this.prev < entry.catchLoc) {\n              return handle(entry.catchLoc, true);\n            } else if (this.prev < entry.finallyLoc) {\n              return handle(entry.finallyLoc);\n            }\n          } else if (hasCatch) {\n            if (this.prev < entry.catchLoc) {\n              return handle(entry.catchLoc, true);\n            }\n          } else if (hasFinally) {\n            if (this.prev < entry.finallyLoc) {\n              return handle(entry.finallyLoc);\n            }\n          } else {\n            throw new Error(\"try statement without catch or finally\");\n          }\n        }\n      }\n    },\n\n    abrupt: function abrupt(type, arg) {\n      for (var i = this.tryEntries.length - 1; i >= 0; --i) {\n        var entry = this.tryEntries[i];\n        if (entry.tryLoc <= this.prev && hasOwn.call(entry, \"finallyLoc\") && this.prev < entry.finallyLoc) {\n          var finallyEntry = entry;\n          break;\n        }\n      }\n\n      if (finallyEntry && (type === \"break\" || type === \"continue\") && finallyEntry.tryLoc <= arg && arg <= finallyEntry.finallyLoc) {\n        // Ignore the finally entry if control is not jumping to a\n        // location outside the try/catch block.\n        finallyEntry = null;\n      }\n\n      var record = finallyEntry ? finallyEntry.completion : {};\n      record.type = type;\n      record.arg = arg;\n\n      if (finallyEntry) {\n        this.next = finallyEntry.finallyLoc;\n      } else {\n        this.complete(record);\n      }\n\n      return ContinueSentinel;\n    },\n\n    complete: function complete(record, afterLoc) {\n      if (record.type === \"throw\") {\n        throw record.arg;\n      }\n\n      if (record.type === \"break\" || record.type === \"continue\") {\n        this.next = record.arg;\n      } else if (record.type === \"return\") {\n        this.rval = record.arg;\n        this.next = \"end\";\n      } else if (record.type === \"normal\" && afterLoc) {\n        this.next = afterLoc;\n      }\n    },\n\n    finish: function finish(finallyLoc) {\n      for (var i = this.tryEntries.length - 1; i >= 0; --i) {\n        var entry = this.tryEntries[i];\n        if (entry.finallyLoc === finallyLoc) {\n          this.complete(entry.completion, entry.afterLoc);\n          resetTryEntry(entry);\n          return ContinueSentinel;\n        }\n      }\n    },\n\n    \"catch\": function _catch(tryLoc) {\n      for (var i = this.tryEntries.length - 1; i >= 0; --i) {\n        var entry = this.tryEntries[i];\n        if (entry.tryLoc === tryLoc) {\n          var record = entry.completion;\n          if (record.type === \"throw\") {\n            var thrown = record.arg;\n            resetTryEntry(entry);\n          }\n          return thrown;\n        }\n      }\n\n      // The context.catch method must only be called with a location\n      // argument that corresponds to a known catch block.\n      throw new Error(\"illegal catch attempt\");\n    },\n\n    delegateYield: function delegateYield(iterable, resultName, nextLoc) {\n      this.delegate = {\n        iterator: values(iterable),\n        resultName: resultName,\n        nextLoc: nextLoc\n      };\n\n      return ContinueSentinel;\n    }\n  };\n}(\n// Among the various tricks for obtaining a reference to the global\n// object, this seems to be the most reliable technique that does not\n// use indirect eval (which violates Content Security Policy).\n(typeof global === \"undefined\" ? \"undefined\" : _typeof(global)) === \"object\" ? global : (typeof window === \"undefined\" ? \"undefined\" : _typeof(window)) === \"object\" ? window : (typeof self === \"undefined\" ? \"undefined\" : _typeof(self)) === \"object\" ? self : undefined);\n/* WEBPACK VAR INJECTION */}.call(exports, __webpack_require__(153), __webpack_require__(99)(module), __webpack_require__(280)))\n\n/***/ }),\n/* 280 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\n// shim for using process in browser\nvar process = module.exports = {};\n\n// cached from whatever global is present so that test runners that stub it\n// don't break things.  But we need to wrap it in a try catch in case it is\n// wrapped in strict mode code which doesn't define any globals.  It's inside a\n// function because try/catches deoptimize in certain engines.\n\nvar cachedSetTimeout;\nvar cachedClearTimeout;\n\nfunction defaultSetTimout() {\n    throw new Error('setTimeout has not been defined');\n}\nfunction defaultClearTimeout() {\n    throw new Error('clearTimeout has not been defined');\n}\n(function () {\n    try {\n        if (typeof setTimeout === 'function') {\n            cachedSetTimeout = setTimeout;\n        } else {\n            cachedSetTimeout = defaultSetTimout;\n        }\n    } catch (e) {\n        cachedSetTimeout = defaultSetTimout;\n    }\n    try {\n        if (typeof clearTimeout === 'function') {\n            cachedClearTimeout = clearTimeout;\n        } else {\n            cachedClearTimeout = defaultClearTimeout;\n        }\n    } catch (e) {\n        cachedClearTimeout = defaultClearTimeout;\n    }\n})();\nfunction runTimeout(fun) {\n    if (cachedSetTimeout === setTimeout) {\n        //normal enviroments in sane situations\n        return setTimeout(fun, 0);\n    }\n    // if setTimeout wasn't available but was latter defined\n    if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {\n        cachedSetTimeout = setTimeout;\n        return setTimeout(fun, 0);\n    }\n    try {\n        // when when somebody has screwed with setTimeout but no I.E. maddness\n        return cachedSetTimeout(fun, 0);\n    } catch (e) {\n        try {\n            // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally\n            return cachedSetTimeout.call(null, fun, 0);\n        } catch (e) {\n            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error\n            return cachedSetTimeout.call(this, fun, 0);\n        }\n    }\n}\nfunction runClearTimeout(marker) {\n    if (cachedClearTimeout === clearTimeout) {\n        //normal enviroments in sane situations\n        return clearTimeout(marker);\n    }\n    // if clearTimeout wasn't available but was latter defined\n    if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {\n        cachedClearTimeout = clearTimeout;\n        return clearTimeout(marker);\n    }\n    try {\n        // when when somebody has screwed with setTimeout but no I.E. maddness\n        return cachedClearTimeout(marker);\n    } catch (e) {\n        try {\n            // When we are in I.E. but the script has been evaled so I.E. doesn't  trust the global object when called normally\n            return cachedClearTimeout.call(null, marker);\n        } catch (e) {\n            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.\n            // Some versions of I.E. have different rules for clearTimeout vs setTimeout\n            return cachedClearTimeout.call(this, marker);\n        }\n    }\n}\nvar queue = [];\nvar draining = false;\nvar currentQueue;\nvar queueIndex = -1;\n\nfunction cleanUpNextTick() {\n    if (!draining || !currentQueue) {\n        return;\n    }\n    draining = false;\n    if (currentQueue.length) {\n        queue = currentQueue.concat(queue);\n    } else {\n        queueIndex = -1;\n    }\n    if (queue.length) {\n        drainQueue();\n    }\n}\n\nfunction drainQueue() {\n    if (draining) {\n        return;\n    }\n    var timeout = runTimeout(cleanUpNextTick);\n    draining = true;\n\n    var len = queue.length;\n    while (len) {\n        currentQueue = queue;\n        queue = [];\n        while (++queueIndex < len) {\n            if (currentQueue) {\n                currentQueue[queueIndex].run();\n            }\n        }\n        queueIndex = -1;\n        len = queue.length;\n    }\n    currentQueue = null;\n    draining = false;\n    runClearTimeout(timeout);\n}\n\nprocess.nextTick = function (fun) {\n    var args = new Array(arguments.length - 1);\n    if (arguments.length > 1) {\n        for (var i = 1; i < arguments.length; i++) {\n            args[i - 1] = arguments[i];\n        }\n    }\n    queue.push(new Item(fun, args));\n    if (queue.length === 1 && !draining) {\n        runTimeout(drainQueue);\n    }\n};\n\n// v8 likes predictible objects\nfunction Item(fun, array) {\n    this.fun = fun;\n    this.array = array;\n}\nItem.prototype.run = function () {\n    this.fun.apply(null, this.array);\n};\nprocess.title = 'browser';\nprocess.browser = true;\nprocess.env = {};\nprocess.argv = [];\nprocess.version = ''; // empty string to avoid regexp issues\nprocess.versions = {};\n\nfunction noop() {}\n\nprocess.on = noop;\nprocess.addListener = noop;\nprocess.once = noop;\nprocess.off = noop;\nprocess.removeListener = noop;\nprocess.removeAllListeners = noop;\nprocess.emit = noop;\n\nprocess.binding = function (name) {\n    throw new Error('process.binding is not supported');\n};\n\nprocess.cwd = function () {\n    return '/';\n};\nprocess.chdir = function (dir) {\n    throw new Error('process.chdir is not supported');\n};\nprocess.umask = function () {\n    return 0;\n};\n\n/***/ }),\n/* 281 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _blockautoformatengine = __webpack_require__(282);\n\nvar _blockautoformatengine2 = _interopRequireDefault(_blockautoformatengine);\n\nvar _inlineautoformatengine = __webpack_require__(283);\n\nvar _inlineautoformatengine2 = _interopRequireDefault(_inlineautoformatengine);\n\nvar _plugin = __webpack_require__(2);\n\nvar _plugin2 = _interopRequireDefault(_plugin);\n\nvar _headingengine = __webpack_require__(172);\n\nvar _headingengine2 = _interopRequireDefault(_headingengine);\n\nvar _listengine = __webpack_require__(179);\n\nvar _listengine2 = _interopRequireDefault(_listengine);\n\nvar _boldengine = __webpack_require__(154);\n\nvar _boldengine2 = _interopRequireDefault(_boldengine);\n\nvar _italicengine = __webpack_require__(155);\n\nvar _italicengine2 = _interopRequireDefault(_italicengine);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module autoformat/autoformat\n */\n\n/**\n * Includes a set of predefined autoformatting actions.\n *\n * ## Bulleted list\n *\n * You can create a bulleted list by staring a line with:\n *\n * * `* `\n * * `- `\n *\n * ## Numbered list\n *\n * You can create a numbered list by staring a line with:\n *\n * * `1. `\n * * `1) `\n *\n * ## Headings\n *\n * You can create a heading by starting a line with:\n *\n * `# ` – will create Heading 1,\n * `## ` – will create Heading 2,\n * `### ` – will create Heading 3.\n *\n * ## Bold and italic\n *\n * You can apply bold or italic to a text by typing Markdown formatting:\n *\n * * `**foo bar**` or `__foo bar__` – will bold the text,\n * * `*foo bar*` or `_foo bar_` – will italicize the text,\n *\n * @extends module:core/plugin~Plugin\n */\nvar Autoformat = function (_Plugin) {\n\t_inherits(Autoformat, _Plugin);\n\n\tfunction Autoformat() {\n\t\t_classCallCheck(this, Autoformat);\n\n\t\treturn _possibleConstructorReturn(this, (Autoformat.__proto__ || Object.getPrototypeOf(Autoformat)).apply(this, arguments));\n\t}\n\n\t_createClass(Autoformat, [{\n\t\tkey: 'init',\n\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tvalue: function init() {\n\t\t\tthis._addListAutoformats();\n\t\t\tthis._addHeadingAutoformats();\n\t\t\tthis._addInlineAutoformats();\n\t\t}\n\n\t\t/**\n   * Adds autoformatting related to ListEngine commands.\n   *\n   * When typed:\n   * - `* ` or `- ` - paragraph will be changed to a bulleted list,\n   * - `1. ` or `1) ` - paragraph will be changed to a numbered list (1 can be any digit or list of digits).\n   *\n   * @private\n   */\n\n\t}, {\n\t\tkey: '_addListAutoformats',\n\t\tvalue: function _addListAutoformats() {\n\t\t\tnew _blockautoformatengine2.default(this.editor, /^[\\*\\-]\\s$/, 'bulletedList');\n\t\t\tnew _blockautoformatengine2.default(this.editor, /^\\d+[\\.|)]?\\s$/, 'numberedList');\n\t\t}\n\n\t\t/**\n   * Adds autoformatting related to HeadingEngine commands.\n   * When typed `# ` or `## ` or `### ` paragraph will be changed to a corresponding heading level.\n   *\n   * @private\n   */\n\n\t}, {\n\t\tkey: '_addHeadingAutoformats',\n\t\tvalue: function _addHeadingAutoformats() {\n\t\t\tvar _this2 = this;\n\n\t\t\tnew _blockautoformatengine2.default(this.editor, /^(#{1,3})\\s$/, function (context) {\n\t\t\t\tvar batch = context.batch,\n\t\t\t\t    match = context.match;\n\n\t\t\t\tvar headingLevel = match[1].length;\n\n\t\t\t\t_this2.editor.execute('heading', {\n\t\t\t\t\tbatch: batch,\n\t\t\t\t\tid: 'heading' + headingLevel\n\t\t\t\t});\n\t\t\t});\n\t\t}\n\n\t\t/**\n   * Adds inline autoformatting capabilities to the editor.\n   *\n   * When typed:\n   * - `**foobar**`: `**` characters are removed, and `foobar` is set to bold,\n   * - `__foobar__`: `__` characters are removed, and `foobar` is set to bold,\n   * - `*foobar*`: `*` characters are removed, and `foobar` is set to italic,\n   * - `_foobar_`: `_` characters are removed, and `foobar` is set to italic.\n   *\n   * @private\n   */\n\n\t}, {\n\t\tkey: '_addInlineAutoformats',\n\t\tvalue: function _addInlineAutoformats() {\n\t\t\tnew _inlineautoformatengine2.default(this.editor, /(\\*\\*)([^\\*]+)(\\*\\*)$/g, 'bold');\n\t\t\tnew _inlineautoformatengine2.default(this.editor, /(__)([^_]+)(__)$/g, 'bold');\n\n\t\t\t// The italic autoformatter cannot be triggered by the bold markers, so we need to check the\n\t\t\t// text before the pattern (e.g. `(?:^|[^\\*])`).\n\t\t\tnew _inlineautoformatengine2.default(this.editor, /(?:^|[^\\*])(\\*)([^\\*_]+)(\\*)$/g, 'italic');\n\t\t\tnew _inlineautoformatengine2.default(this.editor, /(?:^|[^_])(_)([^_]+)(_)$/g, 'italic');\n\t\t}\n\t}], [{\n\t\tkey: 'requires',\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tget: function get() {\n\t\t\treturn [_headingengine2.default, _listengine2.default, _boldengine2.default, _italicengine2.default];\n\t\t}\n\t}]);\n\n\treturn Autoformat;\n}(_plugin2.default);\n\nexports.default = Autoformat;\n\n/***/ }),\n/* 282 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _range = __webpack_require__(3);\n\nvar _range2 = _interopRequireDefault(_range);\n\nvar _textproxy = __webpack_require__(56);\n\nvar _textproxy2 = _interopRequireDefault(_textproxy);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } } /**\n                                                                                                                                                           * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                           * For licensing, see LICENSE.md.\n                                                                                                                                                           */\n\n/**\n * @module autoformat/blockautoformatengine\n */\n\n/**\n * The block autoformatting engine. Allows to format various block patterns. For example,\n * it can be configured to make a paragraph starting with \"* \" a list item.\n *\n * The autoformatting operation is integrated with the undo manager,\n * so the autoformatting step can be undone, if the user's intention wasn't to format the text.\n *\n * See the constructors documentation to learn how to create custom inline autoformatters. You can also use\n * the {@link module:autoformat/autoformat~Autoformat} feature which enables a set of default autoformatters\n * (lists, headings, bold and italic).\n */\nvar BlockAutoformatEngine =\n/**\n * Creates listener triggered on `change` event in document.\n * Calls callback when inserted text matches regular expression or command name\n * if provided instead of callback.\n *\n * Examples of usage:\n *\n * To convert paragraph to heading1 when `- ` is typed, using just commmand name:\n *\n *\t\tnew BlockAutoformatEngine( editor, /^\\- $/, 'heading1' );\n *\n * To convert paragraph to heading1 when `- ` is typed, using just callback:\n *\n *\t\tnew BlockAutoformatEngine( editor, /^\\- $/, ( context ) => {\n *\t\t\tconst { batch, match } = context;\n *\t\t\tconst headingLevel = match[ 1 ].length;\n *\n *\t\t\teditor.execute( 'heading', {\n *\t\t\t\tbatch,\n *\t\t\t\tformatId: `heading${ headingLevel }`\n *\t\t\t} );\n * \t\t} );\n *\n * @param {module:core/editor/editor~Editor} editor Editor instance.\n * @param {RegExp} pattern Regular expression to exec on just inserted text.\n * @param {Function|String} callbackOrCommand Callback to execute or command to run when text is matched.\n * In case of providing callback it receives following parameters:\n * * {module:engine/model/batch~Batch} batch Newly created batch for autoformat changes.\n * * {Object} match RegExp.exec() result of matching pattern to inserted text.\n */\nfunction BlockAutoformatEngine(editor, pattern, callbackOrCommand) {\n\t_classCallCheck(this, BlockAutoformatEngine);\n\n\tvar callback = void 0;\n\n\tif (typeof callbackOrCommand == 'function') {\n\t\tcallback = callbackOrCommand;\n\t} else {\n\t\t(function () {\n\t\t\t// We assume that the actual command name was provided.\n\t\t\tvar command = callbackOrCommand;\n\n\t\t\tcallback = function callback(context) {\n\t\t\t\tvar batch = context.batch;\n\n\t\t\t\t// Create new batch for removal and command execution.\n\n\t\t\t\teditor.execute(command, { batch: batch });\n\t\t\t};\n\t\t})();\n\t}\n\n\teditor.document.on('change', function (event, type, changes) {\n\t\tif (type != 'insert') {\n\t\t\treturn;\n\t\t}\n\n\t\t// Take the first element. Typing shouldn't add more than one element at once.\n\t\t// And if it is not typing (e.g. paste), Autoformat should not be fired.\n\t\tvar value = changes.range.getItems().next().value;\n\n\t\tif (!(value instanceof _textproxy2.default)) {\n\t\t\treturn;\n\t\t}\n\n\t\tvar textNode = value.textNode;\n\t\tvar text = textNode.data;\n\n\t\t// Run matching only on non-empty paragraphs.\n\t\tif (textNode.parent.name !== 'paragraph' || !text) {\n\t\t\treturn;\n\t\t}\n\n\t\tvar match = pattern.exec(text);\n\n\t\tif (!match) {\n\t\t\treturn;\n\t\t}\n\n\t\teditor.document.enqueueChanges(function () {\n\t\t\t// Create new batch to separate typing batch from the Autoformat changes.\n\t\t\tvar batch = editor.document.batch();\n\n\t\t\t// Matched range.\n\t\t\tvar range = _range2.default.createFromParentsAndOffsets(textNode.parent, 0, textNode.parent, match[0].length);\n\n\t\t\t// Remove matched text.\n\t\t\tbatch.remove(range);\n\n\t\t\tcallback({ batch: batch, match: match });\n\t\t});\n\t});\n};\n\nexports.default = BlockAutoformatEngine;\n\n/***/ }),\n/* 283 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _liverange = __webpack_require__(110);\n\nvar _liverange2 = _interopRequireDefault(_liverange);\n\nvar _getschemavalidranges = __webpack_require__(100);\n\nvar _getschemavalidranges2 = _interopRequireDefault(_getschemavalidranges);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } } /**\n                                                                                                                                                           * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                           * For licensing, see LICENSE.md.\n                                                                                                                                                           */\n\n/**\n * @module autoformat/inlineautoformatengine\n */\n\n/**\n * The inline autoformatting engine. Allows to format various inline patterns. For example,\n * it can be configured to make \"foo\" bold when typed `**foo**` (the `**` markers will be removed).\n *\n * The autoformatting operation is integrated with the undo manager,\n * so the autoformatting step can be undone, if the user's intention wasn't to format the text.\n *\n * See the constructors documentation to learn how to create custom inline autoformatters. You can also use\n * the {@link module:autoformat/autoformat~Autoformat} feature which enables a set of default autoformatters\n * (lists, headings, bold and italic).\n */\nvar InlineAutoformatEngine =\n/**\n * Enables autoformatting mechanism on a given {@link module:core/editor/editor~Editor}.\n *\n * It formats the matched text by applying given model attribute or by running the provided formatting callback.\n * Each time data model changes text from given node (from the beginning of the current node to the collapsed\n * selection location) will be tested.\n *\n * @param {module:core/editor/editor~Editor} editor Editor instance.\n * @param {Function|RegExp} testRegexpOrCallback RegExp or callback to execute on text.\n * Provided RegExp *must* have three capture groups. First and third capture groups\n * should match opening/closing delimiters. Second capture group should match text to format.\n *\n *\t\t// Matches `**bold text**` pattern.\n *\t\t// There are three capturing groups:\n *\t\t// - first to match starting `**` delimiter,\n *\t\t// - second to match text to format,\n *\t\t// - third to match ending `**` delimiter.\n *\t\tnew InlineAutoformatEngine( this.editor, /(\\*\\*)([^\\*]+?)(\\*\\*)$/g, 'bold' );\n *\n * When function is provided instead of RegExp, it will be executed with text to match as a parameter. Function\n * should return proper \"ranges\" to delete and format.\n *\n *\t\t{\n *\t\t\tremove: [\n *\t\t\t\t[ 0, 1 ],\t// Remove first letter from the given text.\n *\t\t\t\t[ 5, 6 ]\t// Remove 6th letter from the given text.\n *\t\t\t],\n *\t\t\tformat: [\n *\t\t\t\t[ 1, 5 ]\t// Format all letters from 2nd to 5th.\n *\t\t\t]\n *\t\t}\n *\n * @param {Function|String} attributeOrCallback Name of attribute to apply on matching text or callback for manual\n * formatting.\n *\n *\t\t// Use attribute name:\n *\t\tnew InlineAutoformatEngine( this.editor, /(\\*\\*)([^\\*]+?)(\\*\\*)$/g, 'bold' );\n *\n *\t\t// Use formatting callback:\n *\t\tnew InlineAutoformatEngine( this.editor, /(\\*\\*)([^\\*]+?)(\\*\\*)$/g, ( batch, validRanges ) => {\n *\t\t\tfor ( let range of validRanges ) {\n *\t\t\t\tbatch.setAttribute( range, command, true );\n *\t\t\t}\n *\t\t} );\n */\nfunction InlineAutoformatEngine(editor, testRegexpOrCallback, attributeOrCallback) {\n\tvar _this = this;\n\n\t_classCallCheck(this, InlineAutoformatEngine);\n\n\tthis.editor = editor;\n\n\tvar regExp = void 0;\n\tvar command = void 0;\n\tvar testCallback = void 0;\n\tvar formatCallback = void 0;\n\n\tif (testRegexpOrCallback instanceof RegExp) {\n\t\tregExp = testRegexpOrCallback;\n\t} else {\n\t\ttestCallback = testRegexpOrCallback;\n\t}\n\n\tif (typeof attributeOrCallback == 'string') {\n\t\tcommand = attributeOrCallback;\n\t} else {\n\t\tformatCallback = attributeOrCallback;\n\t}\n\n\t// A test callback run on changed text.\n\ttestCallback = testCallback || function (text) {\n\t\tvar result = void 0;\n\t\tvar remove = [];\n\t\tvar format = [];\n\n\t\twhile ((result = regExp.exec(text)) !== null) {\n\t\t\t// There should be full match and 3 capture groups.\n\t\t\tif (result && result.length < 4) {\n\t\t\t\tbreak;\n\t\t\t}\n\n\t\t\tvar _result = result,\n\t\t\t    index = _result.index,\n\t\t\t    leftDel = _result['1'],\n\t\t\t    content = _result['2'],\n\t\t\t    rightDel = _result['3'];\n\n\t\t\t// Real matched string - there might be some non-capturing groups so we need to recalculate starting index.\n\n\t\t\tvar found = leftDel + content + rightDel;\n\t\t\tindex += result[0].length - found.length;\n\n\t\t\t// Start and End offsets of delimiters to remove.\n\t\t\tvar delStart = [index, index + leftDel.length];\n\t\t\tvar delEnd = [index + leftDel.length + content.length, index + leftDel.length + content.length + rightDel.length];\n\n\t\t\tremove.push(delStart);\n\t\t\tremove.push(delEnd);\n\n\t\t\tformat.push([index + leftDel.length, index + leftDel.length + content.length]);\n\t\t}\n\n\t\treturn {\n\t\t\tremove: remove,\n\t\t\tformat: format\n\t\t};\n\t};\n\n\t// A format callback run on matched text.\n\tformatCallback = formatCallback || function (batch, validRanges) {\n\t\tvar _iteratorNormalCompletion = true;\n\t\tvar _didIteratorError = false;\n\t\tvar _iteratorError = undefined;\n\n\t\ttry {\n\t\t\tfor (var _iterator = validRanges[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\tvar range = _step.value;\n\n\t\t\t\tbatch.setAttribute(range, command, true);\n\t\t\t}\n\t\t} catch (err) {\n\t\t\t_didIteratorError = true;\n\t\t\t_iteratorError = err;\n\t\t} finally {\n\t\t\ttry {\n\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t_iterator.return();\n\t\t\t\t}\n\t\t\t} finally {\n\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t};\n\n\teditor.document.on('change', function (evt, type) {\n\t\tif (type !== 'insert') {\n\t\t\treturn;\n\t\t}\n\n\t\tvar selection = _this.editor.document.selection;\n\n\t\tif (!selection.isCollapsed || !selection.focus || !selection.focus.parent) {\n\t\t\treturn;\n\t\t}\n\n\t\tvar block = selection.focus.parent;\n\t\tvar text = getText(block).slice(0, selection.focus.offset);\n\t\tvar ranges = testCallback(text);\n\t\tvar rangesToFormat = [];\n\n\t\t// Apply format before deleting text.\n\t\tranges.format.forEach(function (range) {\n\t\t\tif (range[0] === undefined || range[1] === undefined) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\trangesToFormat.push(_liverange2.default.createFromParentsAndOffsets(block, range[0], block, range[1]));\n\t\t});\n\n\t\tvar rangesToRemove = [];\n\n\t\t// Reverse order to not mix the offsets while removing.\n\t\tranges.remove.slice().reverse().forEach(function (range) {\n\t\t\tif (range[0] === undefined || range[1] === undefined) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\trangesToRemove.push(_liverange2.default.createFromParentsAndOffsets(block, range[0], block, range[1]));\n\t\t});\n\n\t\tif (!(rangesToFormat.length && rangesToRemove.length)) {\n\t\t\treturn;\n\t\t}\n\n\t\tvar batch = editor.document.batch();\n\n\t\teditor.document.enqueueChanges(function () {\n\t\t\tvar validRanges = (0, _getschemavalidranges2.default)(command, rangesToFormat, editor.document.schema);\n\n\t\t\t// Apply format.\n\t\t\tformatCallback(batch, validRanges);\n\n\t\t\t// Remove delimiters.\n\t\t\tvar _iteratorNormalCompletion2 = true;\n\t\t\tvar _didIteratorError2 = false;\n\t\t\tvar _iteratorError2 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator2 = rangesToRemove[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {\n\t\t\t\t\tvar range = _step2.value;\n\n\t\t\t\t\tbatch.remove(range);\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError2 = true;\n\t\t\t\t_iteratorError2 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion2 && _iterator2.return) {\n\t\t\t\t\t\t_iterator2.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError2) {\n\t\t\t\t\t\tthrow _iteratorError2;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t});\n\t});\n};\n\n// Returns whole text from parent element by adding all data from text nodes together.\n//\n// @private\n// @param {module:engine/model/element~Element} element\n// @returns {String}\n\n\nexports.default = InlineAutoformatEngine;\nfunction getText(element) {\n\treturn Array.from(element.getChildren()).reduce(function (a, b) {\n\t\treturn a + b.data;\n\t}, '');\n}\n\n/***/ }),\n/* 284 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _plugin = __webpack_require__(2);\n\nvar _plugin2 = _interopRequireDefault(_plugin);\n\nvar _boldengine = __webpack_require__(154);\n\nvar _boldengine2 = _interopRequireDefault(_boldengine);\n\nvar _buttonview = __webpack_require__(25);\n\nvar _buttonview2 = _interopRequireDefault(_buttonview);\n\nvar _bold = __webpack_require__(510);\n\nvar _bold2 = _interopRequireDefault(_bold);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module basic-styles/bold\n */\n\n/**\n * The bold feature. It introduces the Bold button and the <kbd>Ctrl+B</kbd> keystroke.\n *\n * It uses the {@link module:basic-styles/boldengine~BoldEngine bold engine feature}.\n *\n * @extends module:core/plugin~Plugin\n */\nvar Bold = function (_Plugin) {\n\t_inherits(Bold, _Plugin);\n\n\tfunction Bold() {\n\t\t_classCallCheck(this, Bold);\n\n\t\treturn _possibleConstructorReturn(this, (Bold.__proto__ || Object.getPrototypeOf(Bold)).apply(this, arguments));\n\t}\n\n\t_createClass(Bold, [{\n\t\tkey: 'init',\n\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tvalue: function init() {\n\t\t\tvar _this2 = this;\n\n\t\t\tvar editor = this.editor;\n\t\t\tvar t = editor.t;\n\t\t\tvar command = editor.commands.get('bold');\n\t\t\tvar keystroke = 'CTRL+B';\n\n\t\t\t// Add bold button to feature components.\n\t\t\teditor.ui.componentFactory.add('bold', function (locale) {\n\t\t\t\tvar view = new _buttonview2.default(locale);\n\n\t\t\t\tview.set({\n\t\t\t\t\tlabel: t('Bold'),\n\t\t\t\t\ticon: _bold2.default,\n\t\t\t\t\tkeystroke: keystroke,\n\t\t\t\t\ttooltip: true\n\t\t\t\t});\n\n\t\t\t\tview.bind('isOn', 'isEnabled').to(command, 'value', 'isEnabled');\n\n\t\t\t\t// Execute command.\n\t\t\t\t_this2.listenTo(view, 'execute', function () {\n\t\t\t\t\treturn editor.execute('bold');\n\t\t\t\t});\n\n\t\t\t\treturn view;\n\t\t\t});\n\n\t\t\t// Set the Ctrl+B keystroke.\n\t\t\teditor.keystrokes.set(keystroke, 'bold');\n\t\t}\n\t}], [{\n\t\tkey: 'requires',\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tget: function get() {\n\t\t\treturn [_boldengine2.default];\n\t\t}\n\t}]);\n\n\treturn Bold;\n}(_plugin2.default);\n\nexports.default = Bold;\n\n/***/ }),\n/* 285 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _plugin = __webpack_require__(2);\n\nvar _plugin2 = _interopRequireDefault(_plugin);\n\nvar _italicengine = __webpack_require__(155);\n\nvar _italicengine2 = _interopRequireDefault(_italicengine);\n\nvar _buttonview = __webpack_require__(25);\n\nvar _buttonview2 = _interopRequireDefault(_buttonview);\n\nvar _italic = __webpack_require__(511);\n\nvar _italic2 = _interopRequireDefault(_italic);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module basic-styles/italic\n */\n\n/**\n * The italic feature. It introduces the Italic button and the <kbd>Ctrl+I</kbd> keystroke.\n *\n * It uses the {@link module:basic-styles/italicengine~ItalicEngine italic engine feature}.\n *\n * @extends module:core/plugin~Plugin\n */\nvar Italic = function (_Plugin) {\n\t_inherits(Italic, _Plugin);\n\n\tfunction Italic() {\n\t\t_classCallCheck(this, Italic);\n\n\t\treturn _possibleConstructorReturn(this, (Italic.__proto__ || Object.getPrototypeOf(Italic)).apply(this, arguments));\n\t}\n\n\t_createClass(Italic, [{\n\t\tkey: 'init',\n\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tvalue: function init() {\n\t\t\tvar _this2 = this;\n\n\t\t\tvar editor = this.editor;\n\t\t\tvar t = editor.t;\n\t\t\tvar command = editor.commands.get('italic');\n\t\t\tvar keystroke = 'CTRL+I';\n\n\t\t\t// Add bold button to feature components.\n\t\t\teditor.ui.componentFactory.add('italic', function (locale) {\n\t\t\t\tvar view = new _buttonview2.default(locale);\n\n\t\t\t\tview.set({\n\t\t\t\t\tlabel: t('Italic'),\n\t\t\t\t\ticon: _italic2.default,\n\t\t\t\t\tkeystroke: keystroke,\n\t\t\t\t\ttooltip: true\n\t\t\t\t});\n\n\t\t\t\tview.bind('isOn', 'isEnabled').to(command, 'value', 'isEnabled');\n\n\t\t\t\t// Execute command.\n\t\t\t\t_this2.listenTo(view, 'execute', function () {\n\t\t\t\t\treturn editor.execute('italic');\n\t\t\t\t});\n\n\t\t\t\treturn view;\n\t\t\t});\n\n\t\t\t// Set the Ctrl+I keystroke.\n\t\t\teditor.keystrokes.set(keystroke, 'italic');\n\t\t}\n\t}], [{\n\t\tkey: 'requires',\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tget: function get() {\n\t\t\treturn [_italicengine2.default];\n\t\t}\n\t}]);\n\n\treturn Italic;\n}(_plugin2.default);\n\nexports.default = Italic;\n\n/***/ }),\n/* 286 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _plugin = __webpack_require__(2);\n\nvar _plugin2 = _interopRequireDefault(_plugin);\n\nvar _clipboardobserver = __webpack_require__(287);\n\nvar _clipboardobserver2 = _interopRequireDefault(_clipboardobserver);\n\nvar _plaintexttohtml = __webpack_require__(290);\n\nvar _plaintexttohtml2 = _interopRequireDefault(_plaintexttohtml);\n\nvar _normalizeclipboarddata = __webpack_require__(289);\n\nvar _normalizeclipboarddata2 = _interopRequireDefault(_normalizeclipboarddata);\n\nvar _htmldataprocessor = __webpack_require__(161);\n\nvar _htmldataprocessor2 = _interopRequireDefault(_htmldataprocessor);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module clipboard/clipboard\n */\n\n/**\n * The clipboard feature. Currently, it's only responsible for intercepting the `paste` event and\n * passing the pasted content through the clipboard pipeline.\n *\n * ## Clipboard input pipeline\n *\n * The feature creates the clipboard input pipeline which allows processing clipboard content\n * before it gets inserted into the editor. The pipeline consists of two events on which\n * the features can listen in order to modify or totally override the default behavior.\n *\n * ### On {@link module:engine/view/document~Document#event:paste}\n *\n * The default action is to:\n *\n * 1. get HTML or plain text from the clipboard,\n * 2. prevent the default action of the native `paste` event,\n * 3. fire {@link module:engine/view/document~Document#event:clipboardInput} with the clipboard data parsed to\n * a {@link module:engine/view/documentfragment~DocumentFragment view document fragment}.\n *\n * This action is performed by a low priority listener, so it can be overridden by a normal one\n * when a deeper change in pasting behavior is needed. For example, a feature which wants to differently read\n * data from the clipboard (the {@link module:clipboard/datatransfer~DataTransfer `DataTransfer`}).\n * should plug a listener at this stage.\n *\n * ### On {@link module:engine/view/document~Document#event:clipboardInput}\n *\n * The default action is to insert the content (`data.content`, represented by a\n * {@link module:engine/view/documentfragment~DocumentFragment}) to an editor if the data is not empty.\n *\n * This action is performed by a low priority listener, so it can be overridden by a normal one.\n *\n * At this stage the pasted content can be processed by the features. E.g. a feature which wants to transform\n * a pasted text into a link can be implemented in this way:\n *\n *\t\tthis.listenTo( editor.editing.view, 'clipboardInput', ( evt, data ) => {\n *\t\t\tif ( data.content.childCount == 1 && isUrlText( data.content.getChild( 0 ) ) ) {\n *\t\t\t\tconst linkUrl = data.content.getChild( 0 ).data;\n *\n *\t\t\t\tdata.content = new ViewDocumentFragment( [\n *\t\t\t\t\tViewElement(\n *\t\t\t\t\t\t'a',\n *\t\t\t\t\t\t{ href: linkUrl },\n *\t\t\t\t\t\t[ new ViewText( linkUrl ) ]\n *\t\t\t\t\t)\n *\t\t\t\t] );\n *\t\t\t}\n *\t\t} );\n *\n * ## Clipboard output pipeline\n *\n * The output pipeline is the equivalent of the input pipeline but for the copy and cut operations.\n * It allows to process the content which will be then put into the clipboard or to override the whole process.\n *\n * ### On {@link module:engine/view/document~Document#event:copy} and {@link module:engine/view/document~Document#event:cut}\n *\n * The default action is to:\n *\n * 1. {@link module:engine/controller/datacontroller~DataController#getSelectedContent get selected content} from the editor,\n * 2. prevent the default action of the native `copy` or `cut` event,\n * 3. fire {@link module:engine/view/document~Document#event:clipboardOutput} with a clone of the selected content\n * converted to a {@link module:engine/view/documentfragment~DocumentFragment view document fragment}.\n *\n * ### On {@link module:engine/view/document~Document#event:clipboardOutput}\n *\n * The default action is to put the content (`data.content`, represented by a\n * {@link module:engine/view/documentfragment~DocumentFragment}) to the clipboard as HTML. In case of the cut operation,\n * the selected content is also deleted from the editor.\n *\n * This action is performed by a low priority listener, so it can be overridden by a normal one.\n *\n * At this stage the copied/cut content can be processed by the features.\n *\n * @extends module:core.plugin~Plugin\n */\nvar Clipboard = function (_Plugin) {\n  _inherits(Clipboard, _Plugin);\n\n  function Clipboard() {\n    _classCallCheck(this, Clipboard);\n\n    return _possibleConstructorReturn(this, (Clipboard.__proto__ || Object.getPrototypeOf(Clipboard)).apply(this, arguments));\n  }\n\n  _createClass(Clipboard, [{\n    key: 'init',\n\n    /**\n     * @inheritDoc\n     */\n    value: function init() {\n      var _this2 = this;\n\n      var editor = this.editor;\n      var doc = editor.document;\n      var editingView = editor.editing.view;\n\n      /**\n       * Data processor used to convert pasted HTML to a view structure.\n       *\n       * @private\n       * @member {module:engine/dataprocessor/htmldataprocessor~HtmlDataProcessor} #_htmlDataProcessor\n       */\n      this._htmlDataProcessor = new _htmldataprocessor2.default();\n\n      editingView.addObserver(_clipboardobserver2.default);\n\n      // The clipboard paste pipeline.\n\n      this.listenTo(editingView, 'paste', function (evt, data) {\n        var dataTransfer = data.dataTransfer;\n        var content = '';\n\n        if (dataTransfer.getData('text/html')) {\n          content = (0, _normalizeclipboarddata2.default)(dataTransfer.getData('text/html'));\n        } else if (dataTransfer.getData('text/plain')) {\n          content = (0, _plaintexttohtml2.default)(dataTransfer.getData('text/plain'));\n        }\n\n        content = _this2._htmlDataProcessor.toView(content);\n\n        data.preventDefault();\n\n        editingView.fire('clipboardInput', { dataTransfer: dataTransfer, content: content });\n      }, { priority: 'low' });\n\n      this.listenTo(editingView, 'clipboardInput', function (evt, data) {\n        if (!data.content.isEmpty) {\n          (function () {\n            var dataController = _this2.editor.data;\n\n            // Convert the pasted content to a model document fragment.\n            // Convertion is contextual, but in this case we need an \"all allowed\" context and for that\n            // we use the $clipboardHolder item.\n            var modelFragment = dataController.viewToModel.convert(data.content, {\n              context: ['$clipboardHolder']\n            });\n\n            doc.enqueueChanges(function () {\n              dataController.insertContent(modelFragment, doc.selection);\n            });\n          })();\n        }\n      }, { priority: 'low' });\n\n      // The clipboard copy/cut pipeline.\n\n      var onCopyCut = function onCopyCut(evt, data) {\n        var dataTransfer = data.dataTransfer;\n        var content = editor.data.toView(editor.data.getSelectedContent(doc.selection));\n\n        data.preventDefault();\n\n        editingView.fire('clipboardOutput', { dataTransfer: dataTransfer, content: content, method: evt.name });\n      };\n\n      this.listenTo(editingView, 'copy', onCopyCut, { priority: 'low' });\n      this.listenTo(editingView, 'cut', onCopyCut, { priority: 'low' });\n\n      this.listenTo(editingView, 'clipboardOutput', function (evt, data) {\n        if (!data.content.isEmpty) {\n          data.dataTransfer.setData('text/html', _this2._htmlDataProcessor.toData(data.content));\n        }\n\n        if (data.method == 'cut') {\n          doc.enqueueChanges(function () {\n            editor.data.deleteContent(doc.selection, doc.batch(), { merge: true });\n          });\n        }\n      }, { priority: 'low' });\n    }\n  }]);\n\n  return Clipboard;\n}(_plugin2.default);\n\n/**\n * Fired with a content which comes from the clipboard (was pasted or dropped) and\n * should be processed in order to be inserted into the editor.\n * It's part of the {@link module:clipboard/clipboard~Clipboard \"clipboard pipeline\"}.\n *\n * @see module:clipboard/clipboardobserver~ClipboardObserver\n * @see module:clipboard/clipboard~Clipboard\n * @event module:engine/view/document~Document#event:clipboardInput\n * @param {module:clipboard/clipboard~ClipboardInputEventData} data Event data.\n */\n\n/**\n * The value of the {@link module:engine/view/document~Document#event:clipboardInput} event.\n *\n * @class module:clipboard/clipboard~ClipboardInputEventData\n */\n\n/**\n * Data transfer instance.\n *\n * @readonly\n * @member {module:clipboard/datatransfer~DataTransfer} module:clipboard/clipboard~ClipboardInputEventData#dataTransfer\n */\n\n/**\n * Content to be inserted into the editor. It can be modified by the event listeners.\n * Read more about the clipboard pipelines in {@link module:clipboard/clipboard~Clipboard}.\n *\n * @member {module:engine/view/documentfragment~DocumentFragment} module:clipboard/clipboard~ClipboardInputEventData#content\n */\n\n/**\n * Fired on {@link module:engine/view/document~Document#event:copy} and {@link module:engine/view/document~Document#event:cut}\n * with a copy of selected content. The content can be processed before it ends up in the clipboard.\n * It's part of the {@link module:clipboard/clipboard~Clipboard \"clipboard pipeline\"}.\n *\n * @see module:clipboard/clipboardobserver~ClipboardObserver\n * @see module:clipboard/clipboard~Clipboard\n * @event module:engine/view/document~Document#event:clipboardOutput\n * @param {module:clipboard/clipboard/ClipboardOutputEventData} data Event data.\n */\n\n/**\n * The value of the {@link module:engine/view/document~Document#event:clipboardOutput} event.\n *\n * @class module:clipboard/clipboard/ClipboardOutputEventData\n */\n\n/**\n * Data transfer instance.\n *\n * @readonly\n * @member {module:clipboard/datatransfer~DataTransfer} module:clipboard/clipboard~ClipboardOutputEventData#dataTransfer\n */\n\n/**\n * Content to be put into the clipboard. It can be modified by the event listeners.\n * Read more about the clipboard pipelines in {@link module:clipboard/clipboard~Clipboard}.\n *\n * @member {module:engine/view/documentfragment~DocumentFragment} module:clipboard/clipboard~ClipboardOutputEventData#content\n */\n\n/**\n * Whether the event was triggered by copy or cut operation.\n *\n * @member {'copy'|'cut'} module:clipboard/clipboard~ClipboardOutputEventData#method\n */\n\n\nexports.default = Clipboard;\n\n/***/ }),\n/* 287 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _domeventobserver = __webpack_require__(58);\n\nvar _domeventobserver2 = _interopRequireDefault(_domeventobserver);\n\nvar _datatransfer = __webpack_require__(288);\n\nvar _datatransfer2 = _interopRequireDefault(_datatransfer);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module clipboard/clipboardobserver\n */\n\n/**\n * {@link module:engine/view/document~Document#event:paste Paste} event observer.\n *\n * Note that this observer is not available by default. To make it available it needs to be added to\n * {@link module:engine/view/document~Document} by the {@link module:engine/view/document~Document#addObserver} method.\n *\n * @extends module:engine/view/observer/domeventobserver~DomEventObserver\n */\nvar ClipboardObserver = function (_DomEventObserver) {\n  _inherits(ClipboardObserver, _DomEventObserver);\n\n  function ClipboardObserver(doc) {\n    _classCallCheck(this, ClipboardObserver);\n\n    var _this = _possibleConstructorReturn(this, (ClipboardObserver.__proto__ || Object.getPrototypeOf(ClipboardObserver)).call(this, doc));\n\n    _this.domEventType = ['paste', 'copy', 'cut'];\n    return _this;\n  }\n\n  _createClass(ClipboardObserver, [{\n    key: 'onDomEvent',\n    value: function onDomEvent(domEvent) {\n      this.fire(domEvent.type, domEvent, {\n        dataTransfer: new _datatransfer2.default(domEvent.clipboardData)\n      });\n    }\n  }]);\n\n  return ClipboardObserver;\n}(_domeventobserver2.default);\n\n/**\n * Fired when user pasted content into one of the editables.\n *\n * Introduced by {@link module:clipboard/clipboardobserver~ClipboardObserver}.\n *\n * Note that this event is not available by default. To make it available {@link module:clipboard/clipboardobserver~ClipboardObserver}\n * needs to be added to {@link module:engine/view/document~Document} by the {@link module:engine/view/document~Document#addObserver} method.\n * It's done by the {@link module:clipboard/clipboard~Clipboard} feature. If it's not loaded, it must be done manually.\n *\n * @see module:clipboard/clipboardobserver~ClipboardObserver\n * @event module:engine/view/document~Document#event:paste\n * @param {module:clipboard/clipboardobserver~ClipboardEventData} data Event data.\n */\n\n/**\n * Fired when user copied content from one of the editables.\n *\n * Introduced by {@link module:clipboard/clipboardobserver~ClipboardObserver}.\n *\n * Note that this event is not available by default. To make it available {@link module:clipboard/clipboardobserver~ClipboardObserver}\n * needs to be added to {@link module:engine/view/document~Document} by the {@link module:engine/view/document~Document#addObserver} method.\n * It's done by the {@link module:clipboard/clipboard~Clipboard} feature. If it's not loaded, it must be done manually.\n *\n * @see module:clipboard/clipboardobserver~ClipboardObserver\n * @event module:engine/view/document~Document#event:copy\n * @param {module:clipboard/clipboardobserver~ClipboardEventData} data Event data.\n */\n\n/**\n * Fired when user cut content from one of the editables.\n *\n * Introduced by {@link module:clipboard/clipboardobserver~ClipboardObserver}.\n *\n * Note that this event is not available by default. To make it available {@link module:clipboard/clipboardobserver~ClipboardObserver}\n * needs to be added to {@link module:engine/view/document~Document} by the {@link module:engine/view/document~Document#addObserver} method.\n * It's done by the {@link module:clipboard/clipboard~Clipboard} feature. If it's not loaded, it must be done manually.\n *\n * @see module:clipboard/clipboardobserver~ClipboardObserver\n * @event module:engine/view/document~Document#event:cut\n * @param {module:clipboard/clipboardobserver~ClipboardEventData} data Event data.\n */\n\n/**\n * The value of the {@link module:engine/view/document~Document#event:paste},\n * {@link module:engine/view/document~Document#event:copy} and {@link module:engine/view/document~Document#event:cut} events.\n *\n * In order to access clipboard data use `dataTransfer` property.\n *\n * @class module:clipboard/clipboardobserver~ClipboardEventData\n * @extends module:engine/view/observer/domeventdata~DomEventData\n */\n\n/**\n * Data transfer instance.\n *\n * @readonly\n * @member {module:clipboard/datatransfer~DataTransfer} module:clipboard/clipboardobserver~ClipboardEventData#dataTransfer\n */\n\n\nexports.default = ClipboardObserver;\n\n/***/ }),\n/* 288 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module clipboard/datatransfer\n */\n\n/**\n * Facade over the native [`DataTransfer`](https://developer.mozilla.org/en-US/docs/Web/API/DataTransfer) object.\n */\nvar DataTransfer = function () {\n\tfunction DataTransfer(nativeDataTransfer) {\n\t\t_classCallCheck(this, DataTransfer);\n\n\t\t/**\n   * The native DataTransfer object.\n   *\n   * @private\n   * @member {DataTransfer} #_native\n   */\n\t\tthis._native = nativeDataTransfer;\n\t}\n\n\t/**\n  * Gets data from the data transfer by its mime type.\n  *\n  *\t\tdataTransfer.getData( 'text/plain' );\n  *\n  * @param {String} type The mime type. E.g. `text/html` or `text/plain`.\n  * @returns {String}\n  */\n\n\n\t_createClass(DataTransfer, [{\n\t\tkey: \"getData\",\n\t\tvalue: function getData(type) {\n\t\t\treturn this._native.getData(type);\n\t\t}\n\n\t\t/**\n   * Sets data in the data transfer.\n   *\n   * @param {String} type The mime type. E.g. `text/html` or `text/plain`.\n   * @param {String} data\n   */\n\n\t}, {\n\t\tkey: \"setData\",\n\t\tvalue: function setData(type, data) {\n\t\t\tthis._native.setData(type, data);\n\t\t}\n\t}]);\n\n\treturn DataTransfer;\n}();\n\nexports.default = DataTransfer;\n\n/***/ }),\n/* 289 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = normalizeClipboardData;\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module clipboard/utils/normalizeclipboarddata\n */\n\n/**\n * Removes some popular browser quirks out of the clipboard data (HTML).\n *\n * @param {String} data The HTML data to normalize.\n * @returns {String} Normalized HTML.\n */\nfunction normalizeClipboardData(data) {\n  return data.replace(/<span class=\"Apple-converted-space\">(\\s+)<\\/span>/g, function (fullMatch, spaces) {\n    // Handle the most popular and problematic case when even a single space becomes an nbsp;.\n    // Decode those to normal spaces. Read more in https://github.com/ckeditor/ckeditor5-clipboard/issues/2.\n    if (spaces.length == 1) {\n      return ' ';\n    }\n\n    return spaces;\n  });\n}\n\n/***/ }),\n/* 290 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\nexports.default = plainTextToHtml;\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module clipboard/utils/plaintexttohtml\n */\n\n/**\n * Converts plain text to its HTML-ized version.\n *\n * @param {String} text The plain text to convert.\n * @returns {String} HTML generated from the plain text.\n */\nfunction plainTextToHtml(text) {\n\ttext = text\n\t// Encode <>.\n\t.replace(/</g, '&lt;').replace(/>/g, '&gt;')\n\t// Creates paragraphs for double line breaks and change single line breaks to spaces.\n\t// In the future single line breaks may be converted into <br>s.\n\t.replace(/\\n\\n/g, '</p><p>').replace(/\\n/g, ' ')\n\t// Preserve trailing spaces (only the first and last one – the rest is handled below).\n\t.replace(/^\\s/, '&nbsp;').replace(/\\s$/, '&nbsp;')\n\t// Preserve other subsequent spaces now.\n\t.replace(/\\s\\s/g, ' &nbsp;');\n\n\tif (text.indexOf('</p><p>') > -1) {\n\t\t// If we created paragraphs above, add the trailing ones.\n\t\ttext = '<p>' + text + '</p>';\n\t}\n\n\t// TODO:\n\t// * What about '\\nfoo' vs ' foo'?\n\n\treturn text;\n}\n\n/***/ }),\n/* 291 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if (\"value\" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };\n\nvar _keystrokehandler = __webpack_require__(61);\n\nvar _keystrokehandler2 = _interopRequireDefault(_keystrokehandler);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module core/editingkeystrokehandler\n */\n\n/**\n * A keystroke handler for editor editing. Its instance is available\n * in {@link module:core/editor/standardeditor~StandardEditor#keystrokes} so plugins\n * can register their keystrokes.\n *\n * E.g. an undo plugin would do this:\n *\n *\t\teditor.keystrokes.set( 'ctrl + Z', 'undo' );\n *\t\teditor.keystrokes.set( 'ctrl + shift + Z', 'redo' );\n *\t\teditor.keystrokes.set( 'ctrl + Y', 'redo' );\n *\n * @extends utils/keystrokehandler~KeystrokeHandler\n */\nvar EditingKeystrokeHandler = function (_KeystrokeHandler) {\n\t_inherits(EditingKeystrokeHandler, _KeystrokeHandler);\n\n\t/**\n  * Creates an instance of the keystroke handler.\n  *\n  * @param {module:core/editor/editor~Editor} editor\n  */\n\tfunction EditingKeystrokeHandler(editor) {\n\t\t_classCallCheck(this, EditingKeystrokeHandler);\n\n\t\t/**\n   * The editor instance.\n   *\n   * @readonly\n   * @member {module:core/editor/editor~Editor}\n   */\n\t\tvar _this = _possibleConstructorReturn(this, (EditingKeystrokeHandler.__proto__ || Object.getPrototypeOf(EditingKeystrokeHandler)).call(this));\n\n\t\t_this.editor = editor;\n\t\treturn _this;\n\t}\n\n\t/**\n  * Registers a handler for the specified keystroke.\n  *\n  * * The handler can be specified as a command name or a callback.\n  *\n  * @param {String|Array.<String|Number>} keystroke Keystroke defined in a format accepted by\n  * the {@link module:utils/keyboard~parseKeystroke} function.\n  * @param {Function} callback If a string is passed, then the keystroke will\n  * {@link module:core/editor/editor~Editor#execute execute a command}.\n  * If a function, then it will be called with the\n  * {@link module:engine/view/observer/keyobserver~KeyEventData key event data} object and\n  * a helper to both `preventDefault` and `stopPropagation` of the event.\n  */\n\n\n\t_createClass(EditingKeystrokeHandler, [{\n\t\tkey: 'set',\n\t\tvalue: function set(keystroke, callback) {\n\t\t\tvar _this2 = this;\n\n\t\t\tif (typeof callback == 'string') {\n\t\t\t\t(function () {\n\t\t\t\t\tvar commandName = callback;\n\n\t\t\t\t\tcallback = function callback() {\n\t\t\t\t\t\t_this2.editor.execute(commandName);\n\t\t\t\t\t};\n\t\t\t\t})();\n\t\t\t}\n\n\t\t\t_get(EditingKeystrokeHandler.prototype.__proto__ || Object.getPrototypeOf(EditingKeystrokeHandler.prototype), 'set', this).call(this, keystroke, callback);\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: 'listenTo',\n\t\tvalue: function listenTo(emitter) {\n\t\t\tvar _this3 = this;\n\n\t\t\tthis._listener.listenTo(emitter, 'keydown', function (evt, data) {\n\t\t\t\tvar handled = _this3.press(data);\n\n\t\t\t\tif (handled) {\n\t\t\t\t\tdata.preventDefault();\n\t\t\t\t}\n\t\t\t});\n\t\t}\n\t}]);\n\n\treturn EditingKeystrokeHandler;\n}(_keystrokehandler2.default);\n\nexports.default = EditingKeystrokeHandler;\n\n/***/ }),\n/* 292 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module core/editor/editor\n */\n\nvar _emittermixin = __webpack_require__(8);\n\nvar _emittermixin2 = _interopRequireDefault(_emittermixin);\n\nvar _config = __webpack_require__(387);\n\nvar _config2 = _interopRequireDefault(_config);\n\nvar _plugincollection = __webpack_require__(294);\n\nvar _plugincollection2 = _interopRequireDefault(_plugincollection);\n\nvar _locale = __webpack_require__(500);\n\nvar _locale2 = _interopRequireDefault(_locale);\n\nvar _datacontroller = __webpack_require__(298);\n\nvar _datacontroller2 = _interopRequireDefault(_datacontroller);\n\nvar _document = __webpack_require__(313);\n\nvar _document2 = _interopRequireDefault(_document);\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nvar _mix = __webpack_require__(4);\n\nvar _mix2 = _interopRequireDefault(_mix);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * Class representing a basic editor. It contains a base architecture, without much additional logic.\n *\n * See also {@link module:core/editor/standardeditor~StandardEditor}.\n *\n * @mixes module:utils/emittermixin~EmitterMixin\n */\nvar Editor = function () {\n\t/**\n  * Creates a new instance of the Editor class.\n  *\n  * @param {Object} config The editor config.\n  */\n\tfunction Editor(config) {\n\t\t_classCallCheck(this, Editor);\n\n\t\t/**\n   * Holds all configurations specific to this editor instance.\n   *\n   * @readonly\n   * @member {module:utils/config~Config}\n   */\n\t\tthis.config = new _config2.default(config);\n\n\t\t/**\n   * The plugins loaded and in use by this editor instance.\n   *\n   * @readonly\n   * @member {module:core/plugin~PluginCollection}\n   */\n\t\tthis.plugins = new _plugincollection2.default(this);\n\n\t\t/**\n   * Commands registered to the editor.\n   *\n   * @readonly\n   * @member {Map.<module:core/command/command~Command>}\n   */\n\t\tthis.commands = new Map();\n\n\t\t/**\n   * @readonly\n   * @member {module:utils/locale~Locale}\n   */\n\t\tthis.locale = new _locale2.default(this.config.get('lang'));\n\n\t\t/**\n   * Shorthand for {@link module:utils/locale~Locale#t}.\n   *\n   * @see module:utils/locale~Locale#t\n   * @method #t\n   */\n\t\tthis.t = this.locale.t;\n\n\t\t/**\n   * Tree Model document managed by this editor.\n   *\n   * @readonly\n   * @member {module:engine/model/document~Document}\n   */\n\t\tthis.document = new _document2.default();\n\n\t\t/**\n   * Instance of the {@link module:engine/controller/datacontroller~DataController data controller}.\n   *\n   * @readonly\n   * @member {module:engine/controller/datacontroller~DataController}\n   */\n\t\tthis.data = new _datacontroller2.default(this.document);\n\n\t\t/**\n   * Instance of the {@link module:engine/controller/editingcontroller~EditingController editing controller}.\n   *\n   * This property is set by more specialized editor classes (such as {@link module:core/editor/standardeditor~StandardEditor}),\n   * however, it's required for features to work as their engine-related parts will try to connect converters.\n   *\n   * When defining a virtual editor class, like one working in Node.js, it's possible to plug a virtual\n   * editing controller which only instantiates necessary properties, but without any observers and listeners.\n   *\n   * @readonly\n   * @member {module:engine/controller/editingcontroller~EditingController} #editing\n   */\n\t}\n\n\t/**\n  * Loads and initializes plugins specified in the config.\n  *\n  * @returns {Promise} A promise which resolves once the initialization is completed.\n  */\n\n\n\t_createClass(Editor, [{\n\t\tkey: 'initPlugins',\n\t\tvalue: function initPlugins() {\n\t\t\tvar _this = this;\n\n\t\t\tvar that = this;\n\t\t\tvar config = this.config;\n\n\t\t\treturn loadPlugins().then(function (loadedPlugins) {\n\t\t\t\treturn initPlugins(loadedPlugins, 'init').then(function () {\n\t\t\t\t\treturn initPlugins(loadedPlugins, 'afterInit');\n\t\t\t\t});\n\t\t\t}).then(function () {\n\t\t\t\treturn _this.fire('pluginsReady');\n\t\t\t});\n\n\t\t\tfunction loadPlugins() {\n\t\t\t\treturn that.plugins.load(config.get('plugins') || []);\n\t\t\t}\n\n\t\t\tfunction initPlugins(loadedPlugins, method) {\n\t\t\t\treturn loadedPlugins.reduce(function (promise, plugin) {\n\t\t\t\t\treturn promise.then(plugin[method].bind(plugin));\n\t\t\t\t}, Promise.resolve());\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Destroys the editor instance, releasing all resources used by it.\n   *\n   * @fires module:core/editor/editor~Editor#destroy\n   * @returns {Promise} A promise that resolves once the editor instance is fully destroyed.\n   */\n\n\t}, {\n\t\tkey: 'destroy',\n\t\tvalue: function destroy() {\n\t\t\tvar _this2 = this;\n\n\t\t\tthis.fire('destroy');\n\t\t\tthis.stopListening();\n\n\t\t\treturn Promise.resolve().then(function () {\n\t\t\t\t_this2.document.destroy();\n\t\t\t\t_this2.data.destroy();\n\t\t\t});\n\t\t}\n\n\t\t/**\n   * Executes specified command with given parameter.\n   *\n   * @param {String} commandName Name of command to execute.\n   * @param {*} [commandParam] If set, command will be executed with this parameter.\n   */\n\n\t}, {\n\t\tkey: 'execute',\n\t\tvalue: function execute(commandName, commandParam) {\n\t\t\tvar command = this.commands.get(commandName);\n\n\t\t\tif (!command) {\n\t\t\t\t/**\n     * Specified command has not been added to the editor.\n     *\n     * @error editor-command-not-found\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('editor-command-not-found: Specified command has not been added to the editor.');\n\t\t\t}\n\n\t\t\tcommand._execute(commandParam);\n\t\t}\n\n\t\t/**\n   * Creates a basic editor instance.\n   *\n   * @param {Object} config See {@link module:core/editor/editor~Editor}'s param.\n   * @returns {Promise} Promise resolved once editor is ready.\n   * @returns {module:core/editor/editor~Editor} return.editor The editor instance.\n   */\n\n\t}], [{\n\t\tkey: 'create',\n\t\tvalue: function create(config) {\n\t\t\tvar _this3 = this;\n\n\t\t\treturn new Promise(function (resolve) {\n\t\t\t\tvar editor = new _this3(config);\n\n\t\t\t\tresolve(editor.initPlugins().then(function () {\n\t\t\t\t\teditor.fire('dataReady');\n\t\t\t\t\teditor.fire('ready');\n\t\t\t\t}).then(function () {\n\t\t\t\t\treturn editor;\n\t\t\t\t}));\n\t\t\t});\n\t\t}\n\t}]);\n\n\treturn Editor;\n}();\n\nexports.default = Editor;\n\n\n(0, _mix2.default)(Editor, _emittermixin2.default);\n\n/**\n * Fired after {@link #initPlugins plugins are initialized}.\n *\n * @event pluginsReady\n */\n\n/**\n * Fired when the editor UI is ready. This event won't be fired if the editor has no UI.\n *\n * @event uiReady\n */\n\n/**\n * Fired when the data loaded to the editor is ready. If a specific editor doesn't load\n * any data initially, this event will be fired right before {@link #event:ready}.\n *\n * @event dataReady\n */\n\n/**\n * Fired when {@link #event:pluginsReady plugins}, {@link #event:uiReady UI} and {@link #event:dataReady data} and all additional\n * editor components are ready.\n *\n * @event ready\n */\n\n/**\n * Fired when this editor instance is destroyed. The editor at this point is not usable and this event should be used to\n * perform the clean-up in any plugin.\n *\n * @event destroy\n */\n\n/***/ }),\n/* 293 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if (\"value\" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };\n\nvar _editor = __webpack_require__(292);\n\nvar _editor2 = _interopRequireDefault(_editor);\n\nvar _editingkeystrokehandler = __webpack_require__(291);\n\nvar _editingkeystrokehandler2 = _interopRequireDefault(_editingkeystrokehandler);\n\nvar _editingcontroller = __webpack_require__(300);\n\nvar _editingcontroller2 = _interopRequireDefault(_editingcontroller);\n\nvar _getdatafromelement = __webpack_require__(390);\n\nvar _getdatafromelement2 = _interopRequireDefault(_getdatafromelement);\n\nvar _setdatainelement = __webpack_require__(398);\n\nvar _setdatainelement2 = _interopRequireDefault(_setdatainelement);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module core/editor/standardeditor\n */\n\n/**\n * Class representing a typical browser-based editor. It handles a single source element and\n * uses {@link module:engine/controller/editingcontroller~EditingController}.\n */\nvar StandardEditor = function (_Editor) {\n\t_inherits(StandardEditor, _Editor);\n\n\t/**\n  * Creates a new instance of the standard editor.\n  *\n  * @param {HTMLElement} element The DOM element that will be the source\n  * for the created editor.\n  * @param {Object} config The editor config.\n  */\n\tfunction StandardEditor(element, config) {\n\t\t_classCallCheck(this, StandardEditor);\n\n\t\t/**\n   * The element on which the editor has been initialized.\n   *\n   * @readonly\n   * @member {HTMLElement}\n   */\n\t\tvar _this = _possibleConstructorReturn(this, (StandardEditor.__proto__ || Object.getPrototypeOf(StandardEditor)).call(this, config));\n\n\t\t_this.element = element;\n\n\t\t// Documented in Editor.\n\t\t_this.editing = new _editingcontroller2.default(_this.document);\n\n\t\t/**\n   * Instance of the {@link module:core/keystrokehandler~KeystrokeHandler}.\n   *\n   * @readonly\n   * @member {module:core/keystrokehandler~KeystrokeHandler}\n   */\n\t\t_this.keystrokes = new _editingkeystrokehandler2.default(_this);\n\n\t\t/**\n   * Editor UI instance.\n   *\n   * This property is set by more specialized editor constructors. However, it's required\n   * for plugins to work (their UI-related part will try to interact with editor UI),\n   * so every editor class which is meant to work with default plugins should set this property.\n   *\n   * @readonly\n   * @member {module:core/editor/editorui~EditorUI} #ui\n   */\n\n\t\t_this.keystrokes.listenTo(_this.editing.view);\n\t\treturn _this;\n\t}\n\n\t/**\n  * @inheritDoc\n  */\n\n\n\t_createClass(StandardEditor, [{\n\t\tkey: 'destroy',\n\t\tvalue: function destroy() {\n\t\t\tvar _this2 = this;\n\n\t\t\treturn Promise.resolve().then(function () {\n\t\t\t\treturn _this2.keystrokes.destroy();\n\t\t\t}).then(function () {\n\t\t\t\treturn _this2.editing.destroy();\n\t\t\t}).then(_get(StandardEditor.prototype.__proto__ || Object.getPrototypeOf(StandardEditor.prototype), 'destroy', this).call(this));\n\t\t}\n\n\t\t/**\n   * Sets the data in the editor's main root.\n   *\n   * @param {*} data The data to load.\n   */\n\n\t}, {\n\t\tkey: 'setData',\n\t\tvalue: function setData(data) {\n\t\t\tthis.data.set(data);\n\t\t}\n\n\t\t/**\n   * Gets the data from the editor's main root.\n   */\n\n\t}, {\n\t\tkey: 'getData',\n\t\tvalue: function getData() {\n\t\t\treturn this.data.get();\n\t\t}\n\n\t\t/**\n   * Updates the {@link #element editor element}'s content with the data.\n   */\n\n\t}, {\n\t\tkey: 'updateEditorElement',\n\t\tvalue: function updateEditorElement() {\n\t\t\t(0, _setdatainelement2.default)(this.element, this.getData());\n\t\t}\n\n\t\t/**\n   * Loads the data from the {@link #element editor element} to the main root.\n   */\n\n\t}, {\n\t\tkey: 'loadDataFromEditorElement',\n\t\tvalue: function loadDataFromEditorElement() {\n\t\t\tthis.setData((0, _getdatafromelement2.default)(this.element));\n\t\t}\n\n\t\t/**\n   * Creates a standard editor instance.\n   *\n   * @param {HTMLElement} element See {@link module:core/editor/standardeditor~StandardEditor}'s param.\n   * @param {Object} config See {@link module:core/editor/standardeditor~StandardEditor}'s param.\n   * @returns {Promise} Promise resolved once editor is ready.\n   * @returns {module:core/editor/standardeditor~StandardEditor} return.editor The editor instance.\n   */\n\n\t}], [{\n\t\tkey: 'create',\n\t\tvalue: function create(element, config) {\n\t\t\tvar _this3 = this;\n\n\t\t\treturn new Promise(function (resolve) {\n\t\t\t\tvar editor = new _this3(element, config);\n\n\t\t\t\tresolve(editor.initPlugins().then(function () {\n\t\t\t\t\teditor.fire('dataReady');\n\t\t\t\t\teditor.fire('ready');\n\t\t\t\t}).then(function () {\n\t\t\t\t\treturn editor;\n\t\t\t\t}));\n\t\t\t});\n\t\t}\n\t}]);\n\n\treturn StandardEditor;\n}(_editor2.default);\n\nexports.default = StandardEditor;\n\n/***/ }),\n/* 294 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module core/plugincollection\n */\n\nvar _plugin = __webpack_require__(2);\n\nvar _plugin2 = _interopRequireDefault(_plugin);\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nvar _log = __webpack_require__(54);\n\nvar _log2 = _interopRequireDefault(_log);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * Manages a list of CKEditor plugins, including loading, resolving dependencies and initialization.\n */\nvar PluginCollection = function () {\n\t/**\n  * Creates an instance of the PluginCollection class.\n  * Allows loading and initializing plugins and their dependencies.\n  *\n  * @param {module:core/editor/editor~Editor} editor\n  * @param {Array.<Function>} [availablePlugins] Plugins (constructors) which the collection will be able to use\n  * when {@link module:core/plugin~PluginCollection#load} is used with plugin names (strings, instead of constructors).\n  * Usually, the editor will pass its built-in plugins to the collection so they can later be\n  * used in `config.plugins` or `config.removePlugins` by names.\n  */\n\tfunction PluginCollection(editor) {\n\t\tvar availablePlugins = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : [];\n\n\t\t_classCallCheck(this, PluginCollection);\n\n\t\t/**\n   * @protected\n   * @member {module:core/editor/editor~Editor} module:core/plugin~PluginCollection#_editor\n   */\n\t\tthis._editor = editor;\n\n\t\t/**\n   * Map of plugin constructors which can be retrieved by their names.\n   *\n   * @protected\n   * @member {Map.<String|Function,Function>} module:core/plugin~PluginCollection#_availablePlugins\n   */\n\t\tthis._availablePlugins = new Map();\n\n\t\t/**\n   * @protected\n   * @member {Map} module:core/plugin~PluginCollection#_plugins\n   */\n\t\tthis._plugins = new Map();\n\n\t\tvar _iteratorNormalCompletion = true;\n\t\tvar _didIteratorError = false;\n\t\tvar _iteratorError = undefined;\n\n\t\ttry {\n\t\t\tfor (var _iterator = availablePlugins[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\tvar PluginConstructor = _step.value;\n\n\t\t\t\tthis._availablePlugins.set(PluginConstructor, PluginConstructor);\n\n\t\t\t\tif (PluginConstructor.pluginName) {\n\t\t\t\t\tthis._availablePlugins.set(PluginConstructor.pluginName, PluginConstructor);\n\t\t\t\t}\n\t\t\t}\n\t\t} catch (err) {\n\t\t\t_didIteratorError = true;\n\t\t\t_iteratorError = err;\n\t\t} finally {\n\t\t\ttry {\n\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t_iterator.return();\n\t\t\t\t}\n\t\t\t} finally {\n\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n  * Collection iterator. Returns `[ PluginConstructor, pluginInstance ]` pairs.\n  */\n\n\n\t_createClass(PluginCollection, [{\n\t\tkey: Symbol.iterator,\n\t\tvalue: regeneratorRuntime.mark(function value() {\n\t\t\tvar _iteratorNormalCompletion2, _didIteratorError2, _iteratorError2, _iterator2, _step2, entry;\n\n\t\t\treturn regeneratorRuntime.wrap(function value$(_context) {\n\t\t\t\twhile (1) {\n\t\t\t\t\tswitch (_context.prev = _context.next) {\n\t\t\t\t\t\tcase 0:\n\t\t\t\t\t\t\t_iteratorNormalCompletion2 = true;\n\t\t\t\t\t\t\t_didIteratorError2 = false;\n\t\t\t\t\t\t\t_iteratorError2 = undefined;\n\t\t\t\t\t\t\t_context.prev = 3;\n\t\t\t\t\t\t\t_iterator2 = this._plugins[Symbol.iterator]();\n\n\t\t\t\t\t\tcase 5:\n\t\t\t\t\t\t\tif (_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done) {\n\t\t\t\t\t\t\t\t_context.next = 13;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\tentry = _step2.value;\n\n\t\t\t\t\t\t\tif (!(typeof entry[0] == 'function')) {\n\t\t\t\t\t\t\t\t_context.next = 10;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t_context.next = 10;\n\t\t\t\t\t\t\treturn entry;\n\n\t\t\t\t\t\tcase 10:\n\t\t\t\t\t\t\t_iteratorNormalCompletion2 = true;\n\t\t\t\t\t\t\t_context.next = 5;\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase 13:\n\t\t\t\t\t\t\t_context.next = 19;\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase 15:\n\t\t\t\t\t\t\t_context.prev = 15;\n\t\t\t\t\t\t\t_context.t0 = _context['catch'](3);\n\t\t\t\t\t\t\t_didIteratorError2 = true;\n\t\t\t\t\t\t\t_iteratorError2 = _context.t0;\n\n\t\t\t\t\t\tcase 19:\n\t\t\t\t\t\t\t_context.prev = 19;\n\t\t\t\t\t\t\t_context.prev = 20;\n\n\t\t\t\t\t\t\tif (!_iteratorNormalCompletion2 && _iterator2.return) {\n\t\t\t\t\t\t\t\t_iterator2.return();\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\tcase 22:\n\t\t\t\t\t\t\t_context.prev = 22;\n\n\t\t\t\t\t\t\tif (!_didIteratorError2) {\n\t\t\t\t\t\t\t\t_context.next = 25;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\tthrow _iteratorError2;\n\n\t\t\t\t\t\tcase 25:\n\t\t\t\t\t\t\treturn _context.finish(22);\n\n\t\t\t\t\t\tcase 26:\n\t\t\t\t\t\t\treturn _context.finish(19);\n\n\t\t\t\t\t\tcase 27:\n\t\t\t\t\t\tcase 'end':\n\t\t\t\t\t\t\treturn _context.stop();\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}, value, this, [[3, 15, 19, 27], [20,, 22, 26]]);\n\t\t})\n\n\t\t/**\n   * Gets the plugin instance by its constructor or name.\n   *\n   * @param {Function|String} key The plugin constructor or {@link module:core/plugin~Plugin.pluginName name}.\n   * @returns {module:core/plugin~Plugin}\n   */\n\n\t}, {\n\t\tkey: 'get',\n\t\tvalue: function get(key) {\n\t\t\treturn this._plugins.get(key);\n\t\t}\n\n\t\t/**\n   * Loads a set of plugins and adds them to the collection.\n   *\n   * @param {Array.<Function|String>} plugins An array of {@link module:core/plugin~Plugin plugin constructors}\n   * or {@link module:core/plugin~Plugin.pluginName plugin names}. The second option (names) work only if\n   * `availablePlugins` were passed to the {@link #constructor}.\n   * @param {Array.<String|Function>} [removePlugins] Names of plugins or plugin constructors\n   * which should not be loaded (despite being specified in the `plugins` array).\n   * @returns {Promise} A promise which gets resolved once all plugins are loaded and available into the\n   * collection.\n   * @returns {Promise.<Array.<module:core/plugin~Plugin>>} returns.loadedPlugins The array of loaded plugins.\n   */\n\n\t}, {\n\t\tkey: 'load',\n\t\tvalue: function load(plugins) {\n\t\t\tvar removePlugins = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : [];\n\n\t\t\tvar that = this;\n\t\t\tvar editor = this._editor;\n\t\t\tvar loading = new Set();\n\t\t\tvar loaded = [];\n\n\t\t\tvar pluginConstructors = mapToAvailableConstructors(plugins);\n\t\t\tvar removePluginConstructors = mapToAvailableConstructors(removePlugins);\n\t\t\tvar missingPlugins = getMissingPluginNames(plugins);\n\n\t\t\tif (missingPlugins) {\n\t\t\t\t// TODO update this error docs with links to docs because it will be a frequent problem.\n\n\t\t\t\t/**\n     * Some plugins are not available and could not be loaded.\n     *\n     * Plugin classes (constructors) need to be provided to the editor before they can be loaded by name.\n     * This is usually done by the builder by setting the {@link module:core/editor/editor~Editor.build}\n     * property.\n     *\n     * @error plugincollection-plugin-not-found\n     * @param {Array.<String>} plugins The name of the plugins which could not be loaded.\n     */\n\t\t\t\tvar errorMsg = 'plugincollection-plugin-not-found: Some plugins are not available and could not be loaded.';\n\n\t\t\t\t// Log the error so it's more visible on the console. Hopefuly, for better DX.\n\t\t\t\t_log2.default.error(errorMsg, { plugins: missingPlugins });\n\n\t\t\t\treturn Promise.reject(new _ckeditorerror2.default(errorMsg, { plugins: missingPlugins }));\n\t\t\t}\n\n\t\t\treturn Promise.all(pluginConstructors.map(loadPlugin)).then(function () {\n\t\t\t\treturn loaded;\n\t\t\t});\n\n\t\t\tfunction loadPlugin(PluginConstructor) {\n\t\t\t\tif (removePluginConstructors.includes(PluginConstructor)) {\n\t\t\t\t\treturn;\n\t\t\t\t}\n\n\t\t\t\t// The plugin is already loaded or being loaded - do nothing.\n\t\t\t\tif (that.get(PluginConstructor) || loading.has(PluginConstructor)) {\n\t\t\t\t\treturn;\n\t\t\t\t}\n\n\t\t\t\treturn instantiatePlugin(PluginConstructor).catch(function (err) {\n\t\t\t\t\t/**\n      * It was not possible to load the plugin.\n      *\n      * @error plugincollection-load\n      * @param {String} plugin The name of the plugin that could not be loaded.\n      */\n\t\t\t\t\t_log2.default.error('plugincollection-load: It was not possible to load the plugin.', { plugin: PluginConstructor });\n\n\t\t\t\t\tthrow err;\n\t\t\t\t});\n\t\t\t}\n\n\t\t\tfunction instantiatePlugin(PluginConstructor) {\n\t\t\t\treturn new Promise(function (resolve) {\n\t\t\t\t\tloading.add(PluginConstructor);\n\n\t\t\t\t\tassertIsPlugin(PluginConstructor);\n\n\t\t\t\t\tif (PluginConstructor.requires) {\n\t\t\t\t\t\tPluginConstructor.requires.forEach(function (RequiredPluginConstructorOrName) {\n\t\t\t\t\t\t\tvar RequiredPluginConstructor = getPluginConstructor(RequiredPluginConstructorOrName);\n\n\t\t\t\t\t\t\tif (removePlugins.includes(RequiredPluginConstructor)) {\n\t\t\t\t\t\t\t\t/**\n         * Cannot load a plugin because one of its dependencies is listed in the `removePlugins` option.\n         *\n         * @error plugincollection-required\n         * @param {Function} plugin The required plugin.\n         * @param {Function} requiredBy The parent plugin.\n         */\n\t\t\t\t\t\t\t\tthrow new _ckeditorerror2.default('plugincollection-required: Cannot load a plugin because one of its dependencies is listed in' + 'the `removePlugins` option.', { plugin: RequiredPluginConstructor, requiredBy: PluginConstructor });\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\tloadPlugin(RequiredPluginConstructor);\n\t\t\t\t\t\t});\n\t\t\t\t\t}\n\n\t\t\t\t\tvar plugin = new PluginConstructor(editor);\n\t\t\t\t\tthat._add(PluginConstructor, plugin);\n\t\t\t\t\tloaded.push(plugin);\n\n\t\t\t\t\tresolve();\n\t\t\t\t});\n\t\t\t}\n\n\t\t\tfunction getPluginConstructor(PluginConstructorOrName) {\n\t\t\t\tif (typeof PluginConstructorOrName == 'function') {\n\t\t\t\t\treturn PluginConstructorOrName;\n\t\t\t\t}\n\n\t\t\t\treturn that._availablePlugins.get(PluginConstructorOrName);\n\t\t\t}\n\n\t\t\tfunction assertIsPlugin(PluginConstructor) {\n\t\t\t\tif (!(PluginConstructor.prototype instanceof _plugin2.default)) {\n\t\t\t\t\t/**\n      * The loaded plugin module is not an instance of {@link module:core/plugin~Plugin}.\n      *\n      * @error plugincollection-instance\n      * @param {*} plugin The constructor which is meant to be loaded as a plugin.\n      */\n\t\t\t\t\tthrow new _ckeditorerror2.default('plugincollection-instance: The loaded plugin module is not an instance of Plugin.', { plugin: PluginConstructor });\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tfunction getMissingPluginNames(plugins) {\n\t\t\t\tvar missingPlugins = [];\n\n\t\t\t\tvar _iteratorNormalCompletion3 = true;\n\t\t\t\tvar _didIteratorError3 = false;\n\t\t\t\tvar _iteratorError3 = undefined;\n\n\t\t\t\ttry {\n\t\t\t\t\tfor (var _iterator3 = plugins[Symbol.iterator](), _step3; !(_iteratorNormalCompletion3 = (_step3 = _iterator3.next()).done); _iteratorNormalCompletion3 = true) {\n\t\t\t\t\t\tvar pluginNameOrConstructor = _step3.value;\n\n\t\t\t\t\t\tif (!getPluginConstructor(pluginNameOrConstructor)) {\n\t\t\t\t\t\t\tmissingPlugins.push(pluginNameOrConstructor);\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t} catch (err) {\n\t\t\t\t\t_didIteratorError3 = true;\n\t\t\t\t\t_iteratorError3 = err;\n\t\t\t\t} finally {\n\t\t\t\t\ttry {\n\t\t\t\t\t\tif (!_iteratorNormalCompletion3 && _iterator3.return) {\n\t\t\t\t\t\t\t_iterator3.return();\n\t\t\t\t\t\t}\n\t\t\t\t\t} finally {\n\t\t\t\t\t\tif (_didIteratorError3) {\n\t\t\t\t\t\t\tthrow _iteratorError3;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\treturn missingPlugins.length ? missingPlugins : null;\n\t\t\t}\n\n\t\t\tfunction mapToAvailableConstructors(plugins) {\n\t\t\t\treturn plugins.map(function (pluginNameOrConstructor) {\n\t\t\t\t\treturn getPluginConstructor(pluginNameOrConstructor);\n\t\t\t\t}).filter(function (PluginConstructor) {\n\t\t\t\t\treturn !!PluginConstructor;\n\t\t\t\t});\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Adds the plugin to the collection. Exposed mainly for testing purposes.\n   *\n   * @protected\n   * @param {Function} PluginConstructor The plugin constructor.\n   * @param {module:core/plugin~Plugin} plugin The instance of the plugin.\n   */\n\n\t}, {\n\t\tkey: '_add',\n\t\tvalue: function _add(PluginConstructor, plugin) {\n\t\t\tthis._plugins.set(PluginConstructor, plugin);\n\n\t\t\tif (PluginConstructor.pluginName) {\n\t\t\t\tthis._plugins.set(PluginConstructor.pluginName, plugin);\n\t\t\t}\n\t\t}\n\t}]);\n\n\treturn PluginCollection;\n}();\n\nexports.default = PluginCollection;\n\n/***/ }),\n/* 295 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if (\"value\" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };\n\nvar _standardeditor = __webpack_require__(293);\n\nvar _standardeditor2 = _interopRequireDefault(_standardeditor);\n\nvar _htmldataprocessor = __webpack_require__(161);\n\nvar _htmldataprocessor2 = _interopRequireDefault(_htmldataprocessor);\n\nvar _classiceditorui = __webpack_require__(296);\n\nvar _classiceditorui2 = _interopRequireDefault(_classiceditorui);\n\nvar _classiceditoruiview = __webpack_require__(297);\n\nvar _classiceditoruiview2 = _interopRequireDefault(_classiceditoruiview);\n\nvar _elementreplacer = __webpack_require__(399);\n\nvar _elementreplacer2 = _interopRequireDefault(_elementreplacer);\n\n__webpack_require__(521);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module editor-classic/classic\n */\n\n/**\n * Classic editor. Uses inline editable and sticky toolbar, all\n * enclosed in a boxed UI.\n *\n * @extends module:core/editor/standardeditor~StandardEditor\n */\nvar ClassicEditor = function (_StandardEditor) {\n\t_inherits(ClassicEditor, _StandardEditor);\n\n\t/**\n  * Creates an instance of the classic editor.\n  *\n  * @param {HTMLElement} element The DOM element that will be the source for the created editor.\n  * The data will be loaded from it and loaded back to it once the editor is destroyed.\n  * @param {Object} config The editor configuration.\n  */\n\tfunction ClassicEditor(element, config) {\n\t\t_classCallCheck(this, ClassicEditor);\n\n\t\tvar _this = _possibleConstructorReturn(this, (ClassicEditor.__proto__ || Object.getPrototypeOf(ClassicEditor)).call(this, element, config));\n\n\t\t_this.document.createRoot();\n\t\t_this.data.processor = new _htmldataprocessor2.default();\n\t\t_this.ui = new _classiceditorui2.default(_this, new _classiceditoruiview2.default(_this.locale));\n\n\t\t/**\n   * The element replacer instance used to hide the editor element.\n   *\n   * @protected\n   * @member {module:utils/elementreplacer~ElementReplacer}\n   */\n\t\t_this._elementReplacer = new _elementreplacer2.default();\n\t\treturn _this;\n\t}\n\n\t/**\n  * Destroys the editor instance, releasing all resources used by it.\n  *\n  * Updates the original editor element with the data.\n  *\n  * @returns {Promise}\n  */\n\n\n\t_createClass(ClassicEditor, [{\n\t\tkey: 'destroy',\n\t\tvalue: function destroy() {\n\t\t\tvar _this2 = this;\n\n\t\t\tthis.updateEditorElement();\n\t\t\tthis._elementReplacer.restore();\n\n\t\t\treturn this.ui.destroy().then(function () {\n\t\t\t\treturn _get(ClassicEditor.prototype.__proto__ || Object.getPrototypeOf(ClassicEditor.prototype), 'destroy', _this2).call(_this2);\n\t\t\t});\n\t\t}\n\n\t\t/**\n   * Creates a classic editor instance.\n   *\n   *\t\tClassicEditor.create( document.querySelector( '#editor' ), {\n   *\t\t\tplugins: [ Delete, Enter, Typing, Paragraph, Undo, Bold, Italic ],\n   *\t\t\ttoolbar: [ 'bold', 'italic', 'undo', 'redo' ]\n   *\t\t} )\n   *\t\t.then( editor => {\n   *\t\t\tconsole.log( 'Editor was initialized', editor );\n   *\t\t} )\n   *\t\t.catch( err => {\n   *\t\t\tconsole.error( err.stack );\n   *\t\t} );\n   *\n   * @param {HTMLElement} element See {@link module:editor-classic/classic~ClassicEditor#constructor}'s parameters.\n   * @param {Object} config See {@link module:editor-classic/classic~ClassicEditor#constructor}'s parameters.\n   * @returns {Promise} A promise resolved once the editor is ready.\n   * @returns {module:core/editor/standardeditor~StandardEditor} return.editor The editor instance.\n   */\n\n\t}], [{\n\t\tkey: 'create',\n\t\tvalue: function create(element, config) {\n\t\t\treturn new Promise(function (resolve) {\n\t\t\t\tvar editor = new ClassicEditor(element, config);\n\n\t\t\t\tresolve(editor.initPlugins().then(function () {\n\t\t\t\t\treturn editor._elementReplacer.replace(element, editor.ui.view.element);\n\t\t\t\t}).then(function () {\n\t\t\t\t\treturn editor.ui.init();\n\t\t\t\t}).then(function () {\n\t\t\t\t\treturn editor.fire('uiReady');\n\t\t\t\t}).then(function () {\n\t\t\t\t\treturn editor.editing.view.attachDomRoot(editor.ui.view.editableElement);\n\t\t\t\t}).then(function () {\n\t\t\t\t\treturn editor.loadDataFromEditorElement();\n\t\t\t\t}).then(function () {\n\t\t\t\t\teditor.fire('dataReady');\n\t\t\t\t\teditor.fire('ready');\n\t\t\t\t}).then(function () {\n\t\t\t\t\treturn editor;\n\t\t\t\t}));\n\t\t\t});\n\t\t}\n\t}]);\n\n\treturn ClassicEditor;\n}(_standardeditor2.default);\n\nexports.default = ClassicEditor;\n\n/***/ }),\n/* 296 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module editor-classic/classiceditorui\n */\n\nvar _componentfactory = __webpack_require__(367);\n\nvar _componentfactory2 = _interopRequireDefault(_componentfactory);\n\nvar _focustracker = __webpack_require__(60);\n\nvar _focustracker2 = _interopRequireDefault(_focustracker);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * The classic editor UI class.\n */\nvar ClassicEditorUI = function () {\n\t/**\n  * Creates an instance of the editor UI class.\n  *\n  * @param {module:core/editor/editor~Editor} editor The editor instance.\n  * @param {module:ui/editorui/editoruiview~EditorUIView} view View of the ui.\n  */\n\tfunction ClassicEditorUI(editor, view) {\n\t\t_classCallCheck(this, ClassicEditorUI);\n\n\t\t/**\n   * Editor that the UI belongs to.\n   *\n   * @readonly\n   * @member {module:core/editor/editor~Editor}\n   */\n\t\tthis.editor = editor;\n\n\t\t/**\n   * View of the ui.\n   *\n   * @readonly\n   * @member {module:ui/editorui/editoruiview~EditorUIView}\n   */\n\t\tthis.view = view;\n\n\t\t/**\n   * Instance of the {@link module:ui/componentfactory~ComponentFactory}.\n   *\n   * @readonly\n   * @member {module:ui/componentfactory~ComponentFactory}\n   */\n\t\tthis.componentFactory = new _componentfactory2.default(editor);\n\n\t\t/**\n   * Keeps information about editor focus.\n   *\n   * @readonly\n   * @member {module:utils/focustracker~FocusTracker}\n   */\n\t\tthis.focusTracker = new _focustracker2.default();\n\n\t\t// Set–up the view.\n\t\tview.set('width', editor.config.get('ui.width'));\n\t\tview.set('height', editor.config.get('ui.height'));\n\n\t\t// Set–up the toolbar.\n\t\tview.toolbar.bind('isActive').to(this.focusTracker, 'isFocused');\n\t\tview.toolbar.limiterElement = view.element;\n\n\t\t// Setup the editable.\n\t\tvar editingRoot = editor.editing.createRoot('div');\n\t\tview.editable.bind('isReadOnly').to(editingRoot);\n\t\tview.editable.bind('isFocused').to(editor.editing.view);\n\t\tview.editable.name = editingRoot.rootName;\n\t\tthis.focusTracker.add(view.editableElement);\n\t}\n\n\t/**\n  * Initializes the UI.\n  *\n  * @returns {Promise} A Promise resolved when the initialization process is finished.\n  */\n\n\n\t_createClass(ClassicEditorUI, [{\n\t\tkey: 'init',\n\t\tvalue: function init() {\n\t\t\tvar _this = this;\n\n\t\t\tvar editor = this.editor;\n\n\t\t\treturn this.view.init().then(function () {\n\t\t\t\tvar toolbarConfig = editor.config.get('toolbar');\n\t\t\t\tvar promises = [];\n\n\t\t\t\tif (toolbarConfig) {\n\t\t\t\t\tpromises.push(_this.view.toolbar.fillFromConfig(toolbarConfig, _this.componentFactory));\n\t\t\t\t}\n\n\t\t\t\treturn Promise.all(promises);\n\t\t\t}).then(function () {\n\t\t\t\tvar toolbarFocusTracker = _this.view.toolbar.focusTracker;\n\n\t\t\t\t// Because toolbar items can get focus, the overall state of\n\t\t\t\t// the toolbar must also be tracked.\n\t\t\t\t_this.focusTracker.add(_this.view.toolbar.element);\n\n\t\t\t\t// Focus the toolbar on the keystroke, if not already focused.\n\t\t\t\teditor.keystrokes.set('Alt+F10', function (data, cancel) {\n\t\t\t\t\tif (_this.focusTracker.isFocused && !toolbarFocusTracker.isFocused) {\n\t\t\t\t\t\t_this.view.toolbar.focus();\n\t\t\t\t\t\tcancel();\n\t\t\t\t\t}\n\t\t\t\t});\n\n\t\t\t\t// Blur the toolbar and bring the focus back to editable on the keystroke.\n\t\t\t\t_this.view.toolbar.keystrokes.set('Esc', function (data, cancel) {\n\t\t\t\t\tif (toolbarFocusTracker.isFocused) {\n\t\t\t\t\t\teditor.editing.view.focus();\n\t\t\t\t\t\tcancel();\n\t\t\t\t\t}\n\t\t\t\t});\n\t\t\t});\n\t\t}\n\n\t\t/**\n   * Destroys the UI.\n   *\n   * @returns {Promise} A Promise resolved when the destruction process is finished.\n   */\n\n\t}, {\n\t\tkey: 'destroy',\n\t\tvalue: function destroy() {\n\t\t\treturn this.view.destroy();\n\t\t}\n\t}]);\n\n\treturn ClassicEditorUI;\n}();\n\nexports.default = ClassicEditorUI;\n\n/***/ }),\n/* 297 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _boxededitoruiview = __webpack_require__(374);\n\nvar _boxededitoruiview2 = _interopRequireDefault(_boxededitoruiview);\n\nvar _inlineeditableuiview = __webpack_require__(373);\n\nvar _inlineeditableuiview2 = _interopRequireDefault(_inlineeditableuiview);\n\nvar _stickytoolbarview = __webpack_require__(381);\n\nvar _stickytoolbarview2 = _interopRequireDefault(_stickytoolbarview);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module editor-classic/classiceditoruiview\n */\n\n/**\n * Classic editor UI view. Uses inline editable and sticky toolbar, all\n * enclosed in a boxed UI view.\n *\n * @extends module:ui/editorui/boxed/boxededitoruiview~BoxedEditorUIView\n */\nvar ClassicEditorUIView = function (_BoxedEditorUIView) {\n\t_inherits(ClassicEditorUIView, _BoxedEditorUIView);\n\n\t/**\n  * Creates an instance of the classic editor UI view.\n  *\n  * @param {module:utils/locale~Locale} locale The {@link module:core/editor/editor~Editor#locale} instance.\n  */\n\tfunction ClassicEditorUIView(locale) {\n\t\t_classCallCheck(this, ClassicEditorUIView);\n\n\t\t/**\n   * A sticky toolbar view instance.\n   *\n   * @readonly\n   * @member {module:ui/toolbar/sticky/stickytoolbarview~StickyToolbarView}\n   */\n\t\tvar _this = _possibleConstructorReturn(this, (ClassicEditorUIView.__proto__ || Object.getPrototypeOf(ClassicEditorUIView)).call(this, locale));\n\n\t\t_this.toolbar = new _stickytoolbarview2.default(locale);\n\n\t\t/**\n   * Editable UI view.\n   *\n   * @readonly\n   * @member {module:ui/editableui/inline/inlineeditableuiview~InlineEditableUIView}\n   */\n\t\t_this.editable = new _inlineeditableuiview2.default(locale);\n\n\t\t_this.top.add(_this.toolbar);\n\t\t_this.main.add(_this.editable);\n\t\treturn _this;\n\t}\n\n\t/**\n  * @inheritDoc\n  */\n\n\n\t_createClass(ClassicEditorUIView, [{\n\t\tkey: 'editableElement',\n\t\tget: function get() {\n\t\t\treturn this.editable.element;\n\t\t}\n\t}]);\n\n\treturn ClassicEditorUIView;\n}(_boxededitoruiview2.default);\n\nexports.default = ClassicEditorUIView;\n\n/***/ }),\n/* 298 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module engine/controller/datacontroller\n */\n\nvar _mix = __webpack_require__(4);\n\nvar _mix2 = _interopRequireDefault(_mix);\n\nvar _emittermixin = __webpack_require__(8);\n\nvar _emittermixin2 = _interopRequireDefault(_emittermixin);\n\nvar _mapper = __webpack_require__(158);\n\nvar _mapper2 = _interopRequireDefault(_mapper);\n\nvar _modelconversiondispatcher = __webpack_require__(160);\n\nvar _modelconversiondispatcher2 = _interopRequireDefault(_modelconversiondispatcher);\n\nvar _modelToViewConverters = __webpack_require__(101);\n\nvar _viewconversiondispatcher = __webpack_require__(308);\n\nvar _viewconversiondispatcher2 = _interopRequireDefault(_viewconversiondispatcher);\n\nvar _viewToModelConverters = __webpack_require__(306);\n\nvar _documentfragment = __webpack_require__(116);\n\nvar _documentfragment2 = _interopRequireDefault(_documentfragment);\n\nvar _range = __webpack_require__(3);\n\nvar _range2 = _interopRequireDefault(_range);\n\nvar _position = __webpack_require__(1);\n\nvar _position2 = _interopRequireDefault(_position);\n\nvar _insertcontent = __webpack_require__(302);\n\nvar _insertcontent2 = _interopRequireDefault(_insertcontent);\n\nvar _deletecontent = __webpack_require__(299);\n\nvar _deletecontent2 = _interopRequireDefault(_deletecontent);\n\nvar _modifyselection = __webpack_require__(303);\n\nvar _modifyselection2 = _interopRequireDefault(_modifyselection);\n\nvar _getselectedcontent = __webpack_require__(301);\n\nvar _getselectedcontent2 = _interopRequireDefault(_getselectedcontent);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * Controller for the data pipeline. The data pipeline controls how data is retrieved from the document\n * and set inside it. Hence, the controller features two methods which allow to {@link ~DataController#get get}\n * and {@link ~DataController#set set} data of the {@link ~DataController#model model}\n * using given:\n *\n * * {@link module:engine/dataprocessor/dataprocessor~DataProcessor data processor},\n * * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher model to view} and\n * * {@link module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher view to model} converters.\n *\n * @mixes module:utils/emittermixin~EmitterMixin\n */\nvar DataController = function () {\n\t/**\n  * Creates data controller instance.\n  *\n  * @param {module:engine/model/document~Document} model Document model.\n  * @param {module:engine/dataprocessor/dataprocessor~DataProcessor} [dataProcessor] Data processor which should used by the controller.\n  */\n\tfunction DataController(model, dataProcessor) {\n\t\tvar _this = this;\n\n\t\t_classCallCheck(this, DataController);\n\n\t\t/**\n   * Document model.\n   *\n   * @readonly\n   * @member {module:engine/model/document~Document}\n   */\n\t\tthis.model = model;\n\n\t\t/**\n   * Data processor used during the conversion.\n   *\n   * @readonly\n   * @member {module:engine/dataProcessor~DataProcessor}\n   */\n\t\tthis.processor = dataProcessor;\n\n\t\t/**\n   * Mapper used for the conversion. It has no permanent bindings, because they are created when getting data and\n   * cleared directly after data are converted. However, the mapper is defined as class property, because\n   * it needs to be passed to the `ModelConversionDispatcher` as a conversion API.\n   *\n   * @member {module:engine/conversion/mapper~Mapper}\n   */\n\t\tthis.mapper = new _mapper2.default();\n\n\t\t/**\n   * Model to view conversion dispatcher used by the {@link #get get method}.\n   * To attach model to view converter to the data pipeline you need to add lister to this property:\n   *\n   *\t\tdata.modelToView( 'insert:$element', customInsertConverter );\n   *\n   * Or use {@link module:engine/conversion/buildmodelconverter~ModelConverterBuilder}:\n   *\n   *\t\tbuildModelConverter().for( data.modelToView ).fromAttribute( 'bold' ).toElement( 'b' );\n   *\n   * @readonly\n   * @member {module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher}\n   */\n\t\tthis.modelToView = new _modelconversiondispatcher2.default(this.model, {\n\t\t\tmapper: this.mapper\n\t\t});\n\t\tthis.modelToView.on('insert:$text', (0, _modelToViewConverters.insertText)(), { priority: 'lowest' });\n\n\t\t/**\n   * View to model conversion dispatcher used by the {@link #set set method}.\n   * To attach view to model converter to the data pipeline you need to add lister to this property:\n   *\n   *\t\tdata.viewToModel( 'element', customElementConverter );\n   *\n   * Or use {@link module:engine/conversion/buildviewconverter~ViewConverterBuilder}:\n   *\n   *\t\tbuildViewConverter().for( data.viewToModel ).fromElement( 'b' ).toAttribute( 'bold', 'true' );\n   *\n   * @readonly\n   * @member {module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher}\n   */\n\t\tthis.viewToModel = new _viewconversiondispatcher2.default({\n\t\t\tschema: model.schema\n\t\t});\n\n\t\t// Define default converters for text and elements.\n\t\t//\n\t\t// Note that if there is no default converter for the element it will be skipped, for instance `<b>foo</b>` will be\n\t\t// converted to nothing. We add `convertToModelFragment` as a last converter so it converts children of that\n\t\t// element to the document fragment so `<b>foo</b>` will be converted to `foo` if there is no converter for `<b>`.\n\t\tthis.viewToModel.on('text', (0, _viewToModelConverters.convertText)(), { priority: 'lowest' });\n\t\tthis.viewToModel.on('element', (0, _viewToModelConverters.convertToModelFragment)(), { priority: 'lowest' });\n\t\tthis.viewToModel.on('documentFragment', (0, _viewToModelConverters.convertToModelFragment)(), { priority: 'lowest' });\n\n\t\tthis.on('insertContent', function (evt, data) {\n\t\t\treturn (0, _insertcontent2.default)(_this, data.content, data.selection, data.batch);\n\t\t});\n\t\tthis.on('deleteContent', function (evt, data) {\n\t\t\treturn (0, _deletecontent2.default)(data.selection, data.batch, data.options);\n\t\t});\n\t\tthis.on('modifySelection', function (evt, data) {\n\t\t\treturn (0, _modifyselection2.default)(_this, data.selection, data.options);\n\t\t});\n\t\tthis.on('getSelectedContent', function (evt, data) {\n\t\t\tdata.content = (0, _getselectedcontent2.default)(data.selection);\n\t\t});\n\t}\n\n\t/**\n  * Returns model's data converted by the {@link #modelToView model to view converters} and\n  * formatted by the {@link #processor data processor}.\n  *\n  * @param {String} [rootName='main'] Root name.\n  * @returns {String} Output data.\n  */\n\n\n\t_createClass(DataController, [{\n\t\tkey: 'get',\n\t\tvalue: function get() {\n\t\t\tvar rootName = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 'main';\n\n\t\t\t// Get model range.\n\t\t\treturn this.stringify(this.model.getRoot(rootName));\n\t\t}\n\n\t\t/**\n   * Returns the content of the given {@link module:engine/model/element~Element model's element} or\n   * {@link module:engine/model/documentfragment~DocumentFragment model document fragment} converted by the\n   * {@link #modelToView model to view converters} and formatted by the\n   * {@link #processor data processor}.\n   *\n   * @param {module:engine/model/element~Element|module:engine/model/documentfragment~DocumentFragment} modelElementOrFragment\n   * Element which content will be stringified.\n   * @returns {String} Output data.\n   */\n\n\t}, {\n\t\tkey: 'stringify',\n\t\tvalue: function stringify(modelElementOrFragment) {\n\t\t\t// model -> view\n\t\t\tvar viewDocumentFragment = this.toView(modelElementOrFragment);\n\n\t\t\t// view -> data\n\t\t\treturn this.processor.toData(viewDocumentFragment);\n\t\t}\n\n\t\t/**\n   * Returns the content of the given {@link module:engine/model/element~Element model element} or\n   * {@link module:engine/model/documentfragment~DocumentFragment model document fragment} converted by the\n   * {@link #modelToView model to view converters} to a\n   * {@link module:engine/view/documentfragment~DocumentFragment view document fragment}.\n   *\n   * @param {module:engine/model/element~Element|module:engine/model/documentfragment~DocumentFragment} modelElementOrFragment\n   * Element or document fragment which content will be converted.\n   * @returns {module:engine/view/documentfragment~DocumentFragment} Output view DocumentFragment.\n   */\n\n\t}, {\n\t\tkey: 'toView',\n\t\tvalue: function toView(modelElementOrFragment) {\n\t\t\tvar modelRange = _range2.default.createIn(modelElementOrFragment);\n\n\t\t\tvar viewDocumentFragment = new _documentfragment2.default();\n\t\t\tthis.mapper.bindElements(modelElementOrFragment, viewDocumentFragment);\n\n\t\t\tthis.modelToView.convertInsertion(modelRange);\n\n\t\t\tthis.mapper.clearBindings();\n\n\t\t\treturn viewDocumentFragment;\n\t\t}\n\n\t\t/**\n   * Sets input data parsed by the {@link #processor data processor} and\n   * converted by the {@link #viewToModel view to model converters}.\n   *\n   * This method also creates a batch with all the changes applied. If all you need is to parse data use\n   * the {@link #parse} method.\n   *\n   * @param {String} data Input data.\n   * @param {String} [rootName='main'] Root name.\n   */\n\n\t}, {\n\t\tkey: 'set',\n\t\tvalue: function set(data) {\n\t\t\tvar _this2 = this;\n\n\t\t\tvar rootName = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 'main';\n\n\t\t\t// Save to model.\n\t\t\tvar modelRoot = this.model.getRoot(rootName);\n\n\t\t\tthis.model.enqueueChanges(function () {\n\t\t\t\t// Clearing selection is a workaround for ticket #569 (LiveRange loses position after removing data from document).\n\t\t\t\t// After fixing it this code should be removed.\n\t\t\t\t_this2.model.selection.removeAllRanges();\n\t\t\t\t_this2.model.selection.clearAttributes();\n\n\t\t\t\t// Initial batch should be ignored by features like undo, etc.\n\t\t\t\t_this2.model.batch('transparent').remove(_range2.default.createIn(modelRoot)).insert(_position2.default.createAt(modelRoot, 0), _this2.parse(data));\n\t\t\t});\n\t\t}\n\n\t\t/**\n   * Returns data parsed by the {@link #processor data processor} and then\n   * converted by the {@link #viewToModel view to model converters}.\n   *\n   * @see #set\n   * @param {String} data Data to parse.\n   * @param {String} [context='$root'] Base context in which the view will be converted to the model. See:\n   * {@link module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher#convert}.\n   * @returns {module:engine/model/documentfragment~DocumentFragment} Parsed data.\n   */\n\n\t}, {\n\t\tkey: 'parse',\n\t\tvalue: function parse(data) {\n\t\t\tvar context = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : '$root';\n\n\t\t\t// data -> view\n\t\t\tvar viewDocumentFragment = this.processor.toView(data);\n\n\t\t\t// view -> model\n\t\t\treturn this.toModel(viewDocumentFragment, context);\n\t\t}\n\n\t\t/**\n   * Returns the content of the given {@link module:engine/view/element~Element view element} or\n   * {@link module:engine/view/documentfragment~DocumentFragment view document fragment} converted by the\n   * {@link #viewToModel view to model converters} to a\n   * {@link module:engine/model/documentfragment~DocumentFragment model document fragment}.\n   *\n   * @param {module:engine/view/element~Element|module:engine/view/documentfragment~DocumentFragment} viewElementOrFragment\n   * Element or document fragment which content will be converted.\n   * @param {String} [context='$root'] Base context in which the view will be converted to the model. See:\n   * {@link module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher#convert}.\n   * @returns {module:engine/model/documentfragment~DocumentFragment} Output document fragment.\n   */\n\n\t}, {\n\t\tkey: 'toModel',\n\t\tvalue: function toModel(viewElementOrFragment) {\n\t\t\tvar context = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : '$root';\n\n\t\t\treturn this.viewToModel.convert(viewElementOrFragment, { context: [context] });\n\t\t}\n\n\t\t/**\n   * Removes all event listeners set by the DataController.\n   */\n\n\t}, {\n\t\tkey: 'destroy',\n\t\tvalue: function destroy() {}\n\n\t\t/**\n   * See {@link module:engine/controller/insertcontent~insertContent}.\n   *\n   * @fires insertContent\n   * @param {module:engine/model/documentfragment~DocumentFragment} content The content to insert.\n   * @param {module:engine/model/selection~Selection} selection Selection into which the content should be inserted.\n   * @param {module:engine/model/batch~Batch} [batch] Batch to which deltas will be added. If not specified, then\n   * changes will be added to a new batch.\n   */\n\n\t}, {\n\t\tkey: 'insertContent',\n\t\tvalue: function insertContent(content, selection, batch) {\n\t\t\tthis.fire('insertContent', { content: content, selection: selection, batch: batch });\n\t\t}\n\n\t\t/**\n   * See {@link module:engine/controller/deletecontent~deleteContent}.\n   *\n   * Note: For the sake of predictability, the resulting selection should always be collapsed.\n   * In cases where a feature wants to modify deleting behavior so selection isn't collapsed\n   * (e.g. a table feature may want to keep row selection after pressing <kbd>Backspace</kbd>),\n   * then that behavior should be implemented in the view's listener. At the same time, the table feature\n   * will need to modify this method's behavior too, e.g. to \"delete contents and then collapse\n   * the selection inside the last selected cell\" or \"delete the row and collapse selection somewhere near\".\n   * That needs to be done in order to ensure that other features which use `deleteContent()` will work well with tables.\n   *\n   * @fires deleteContent\n   * @param {module:engine/model/selection~Selection} selection Selection of which the content should be deleted.\n   * @param {module:engine/model/batch~Batch} batch Batch to which deltas will be added.\n   * @param {Object} options See {@link module:engine/controller/deletecontent~deleteContent}'s options.\n   */\n\n\t}, {\n\t\tkey: 'deleteContent',\n\t\tvalue: function deleteContent(selection, batch, options) {\n\t\t\tthis.fire('deleteContent', { batch: batch, selection: selection, options: options });\n\t\t}\n\n\t\t/**\n   * See {@link module:engine/controller/modifyselection~modifySelection}.\n   *\n   * @fires modifySelection\n   * @param {module:engine/model/selection~Selection} The selection to modify.\n   * @param {Object} options See {@link module:engine/controller/modifyselection~modifySelection}'s options.\n   */\n\n\t}, {\n\t\tkey: 'modifySelection',\n\t\tvalue: function modifySelection(selection, options) {\n\t\t\tthis.fire('modifySelection', { selection: selection, options: options });\n\t\t}\n\n\t\t/**\n   * See {@link module:engine/controller/getselectedcontent~getSelectedContent}.\n   *\n   * @fires module:engine/controller/datacontroller~DataController#getSelectedContent\n   * @param {module:engine/model/selection~Selection} selection The selection of which content will be retrieved.\n   * @returns {module:engine/model/documentfragment~DocumentFragment} Document fragment holding the clone of the selected content.\n   */\n\n\t}, {\n\t\tkey: 'getSelectedContent',\n\t\tvalue: function getSelectedContent(selection) {\n\t\t\tvar evtData = { selection: selection };\n\n\t\t\tthis.fire('getSelectedContent', evtData);\n\n\t\t\treturn evtData.content;\n\t\t}\n\t}]);\n\n\treturn DataController;\n}();\n\nexports.default = DataController;\n\n\n(0, _mix2.default)(DataController, _emittermixin2.default);\n\n/**\n * Event fired when {@link #insertContent} method is called.\n * The {@link #insertContent default action of that method} is implemented as a\n * listener to this event so it can be fully customized by the features.\n *\n * @event insertContent\n * @param {Object} data\n * @param {module:engine/view/documentfragment~DocumentFragment} data.content The content to insert.\n * @param {module:engine/model/selection~Selection} data.selection Selection into which the content should be inserted.\n * @param {module:engine/model/batch~Batch} [data.batch] Batch to which deltas will be added.\n */\n\n/**\n * Event fired when {@link #deleteContent} method is called.\n * The {@link module:engine/controller/deletecontent~deleteContent default action of that method} is implemented as a\n * listener to this event so it can be fully customized by the features.\n *\n * @event deleteContent\n * @param {Object} data\n * @param {module:engine/model/batch~Batch} data.batch\n * @param {module:engine/model/selection~Selection} data.selection\n * @param {Object} data.options See {@link module:engine/controller/deletecontent~deleteContent}'s options.\n */\n\n/**\n * Event fired when {@link #modifySelection} method is called.\n * The {@link module:engine/controller/modifyselection~modifySelection default action of that method} is implemented as a\n * listener to this event so it can be fully customized by the features.\n *\n * @event modifySelection\n * @param {Object} data\n * @param {module:engine/model/selection~Selection} data.selection\n * @param {Object} data.options See {@link module:engine/controller/modifyselection~modifySelection}'s options.\n */\n\n/**\n * Event fired when {@link module:engine/controller/datacontroller~DataController#getSelectedContent} method is called.\n * The {@link module:engine/controller/getselectedcontent~getSelectedContent default action of that method} is implemented as a\n * listener to this event so it can be fully customized by the features.\n *\n * @event module:engine/controller/datacontroller~DataController#getSelectedContent\n * @param {Object} data\n * @param {module:engine/model/selection~Selection} data.selection\n * @param {module:engine/model/documentfragment~DocumentFragment} data.content The document fragment to return\n * (holding a clone of the selected content).\n */\n\n/***/ }),\n/* 299 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\nexports.default = deleteContent;\n\nvar _liveposition = __webpack_require__(165);\n\nvar _liveposition2 = _interopRequireDefault(_liveposition);\n\nvar _position = __webpack_require__(1);\n\nvar _position2 = _interopRequireDefault(_position);\n\nvar _element = __webpack_require__(5);\n\nvar _element2 = _interopRequireDefault(_element);\n\nvar _comparearrays = __webpack_require__(48);\n\nvar _comparearrays2 = _interopRequireDefault(_comparearrays);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Deletes content of the selection and merge siblings. The resulting selection is always collapsed.\n *\n * @param {module:engine/model/selection~Selection} selection Selection of which the content should be deleted.\n * @param {module:engine/model/batch~Batch} batch Batch to which the deltas will be added.\n * @param {Object} [options]\n * @param {Boolean} [options.merge=false] Merge elements after removing the contents of the selection.\n * For example, `<h>x[x</h><p>y]y</p>` will become: `<h>x^y</h>` with the option enabled\n * and: `<h>x^</h><p>y</p>` without it.\n * Note: {@link module:engine/model/schema~Schema#objects object} and {@link module:engine/model/schema~Schema#limits limit}\n * elements will not be merged.\n */\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/controller/deletecontent\n */\n\nfunction deleteContent(selection, batch) {\n\tvar options = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};\n\n\tif (selection.isCollapsed) {\n\t\treturn;\n\t}\n\n\tvar selRange = selection.getFirstRange();\n\n\tvar startPos = selRange.start;\n\tvar endPos = _liveposition2.default.createFromPosition(selRange.end);\n\n\t// 1. Remove the contents if there are any.\n\tif (!selRange.start.isTouching(selRange.end)) {\n\t\tbatch.remove(selRange);\n\t}\n\n\t// 2. Merge elements in the right branch to the elements in the left branch.\n\t// The only reasonable (in terms of data and selection correctness) case in which we need to do that is:\n\t//\n\t// <heading type=1>Fo[</heading><paragraph>]ar</paragraph> => <heading type=1>Fo^ar</heading>\n\t//\n\t// However, the algorithm supports also merging deeper structures (up to the depth of the shallower branch),\n\t// as it's hard to imagine what should actually be the default behavior. Usually, specific features will\n\t// want to override that behavior anyway.\n\tif (options.merge) {\n\t\tmergeBranches(batch, startPos, endPos);\n\t}\n\n\tselection.collapse(startPos);\n\n\t// 3. Autoparagraphing.\n\t// Check if a text is allowed in the new container. If not, try to create a new paragraph (if it's allowed here).\n\tif (shouldAutoparagraph(batch.document, startPos)) {\n\t\tvar paragraph = new _element2.default('paragraph');\n\t\tbatch.insert(startPos, paragraph);\n\n\t\tselection.collapse(paragraph);\n\t}\n\n\tendPos.detach();\n}\n\nfunction mergeBranches(batch, startPos, endPos) {\n\tvar endPath = endPos.path;\n\tvar mergeEnd = Math.min(startPos.path.length - 1, endPath.length - 1);\n\tvar mergeDepth = (0, _comparearrays2.default)(startPos.path, endPath);\n\n\tif (typeof mergeDepth == 'number') {\n\t\tfor (; mergeDepth < mergeEnd; mergeDepth++) {\n\t\t\tvar mergePath = startPos.path.slice(0, mergeDepth);\n\t\t\tmergePath.push(startPos.path[mergeDepth] + 1);\n\n\t\t\tvar mergePos = new _position2.default(endPos.root, mergePath);\n\t\t\tvar previousNode = mergePos.nodeBefore;\n\t\t\tvar nextNode = mergePos.nodeAfter;\n\n\t\t\tif (!checkCanBeMerged(previousNode) || !checkCanBeMerged(nextNode)) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tif (nextNode.childCount > 0) {\n\t\t\t\tbatch.merge(mergePos);\n\t\t\t} else {\n\t\t\t\tbatch.remove(nextNode);\n\t\t\t}\n\t\t}\n\t}\n}\n\nfunction shouldAutoparagraph(doc, position) {\n\tvar isTextAllowed = doc.schema.check({ name: '$text', inside: position });\n\tvar isParagraphAllowed = doc.schema.check({ name: 'paragraph', inside: position });\n\n\treturn !isTextAllowed && isParagraphAllowed;\n}\n\nfunction checkCanBeMerged(element) {\n\tvar schema = element.document.schema;\n\n\treturn !schema.objects.has(element.name) && !schema.limits.has(element.name);\n}\n\n/***/ }),\n/* 300 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module engine/controller/editingcontroller\n */\n\nvar _document = __webpack_require__(320);\n\nvar _document2 = _interopRequireDefault(_document);\n\nvar _mapper = __webpack_require__(158);\n\nvar _mapper2 = _interopRequireDefault(_mapper);\n\nvar _modelconversiondispatcher = __webpack_require__(160);\n\nvar _modelconversiondispatcher2 = _interopRequireDefault(_modelconversiondispatcher);\n\nvar _modelToViewConverters = __webpack_require__(101);\n\nvar _viewSelectionToModelConverters = __webpack_require__(305);\n\nvar _modelSelectionToViewConverters = __webpack_require__(159);\n\nvar _emittermixin = __webpack_require__(8);\n\nvar _emittermixin2 = _interopRequireDefault(_emittermixin);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * Controller for the editing pipeline. The editing pipeline controls {@link ~EditingController#model model} rendering,\n * including selection handling. It also creates {@link ~EditingController#view view document} which build a\n * browser-independent virtualization over the DOM elements. Editing controller also attach default converters.\n */\nvar EditingController = function () {\n\t/**\n  * Creates editing controller instance.\n  *\n  * @param {module:engine/model/document~Document} model Document model.\n  */\n\tfunction EditingController(model) {\n\t\tvar _this = this;\n\n\t\t_classCallCheck(this, EditingController);\n\n\t\t/**\n   * Document model.\n   *\n   * @readonly\n   * @member {module:engine/model/document~Document}\n   */\n\t\tthis.model = model;\n\n\t\t/**\n   * View document.\n   *\n   * @readonly\n   * @member {module:engine/view/document~Document}\n   */\n\t\tthis.view = new _document2.default();\n\n\t\t/**\n   * Mapper which describes model-view binding.\n   *\n   * @readonly\n   * @member {module:engine/conversion/mapper~Mapper}\n   */\n\t\tthis.mapper = new _mapper2.default();\n\n\t\t/**\n   * Model to view conversion dispatcher, which converts changes from the model to\n   * {@link #view editing view}.\n   *\n   * To attach model to view converter to the editing pipeline you need to add lister to this property:\n   *\n   *\t\tediting.modelToView( 'insert:$element', customInsertConverter );\n   *\n   * Or use {@link module:engine/conversion/buildmodelconverter~ModelConverterBuilder}:\n   *\n   *\t\tbuildModelConverter().for( editing.modelToView ).fromAttribute( 'bold' ).toElement( 'b' );\n   *\n   * @readonly\n   * @member {module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher} #modelToView\n   */\n\t\tthis.modelToView = new _modelconversiondispatcher2.default(this.model, {\n\t\t\tmapper: this.mapper,\n\t\t\tviewSelection: this.view.selection\n\t\t});\n\n\t\t/**\n   * Property keeping all listenters attached by controller on other objects, so it can\n   * stop listening on {@link #destroy}.\n   *\n   * @private\n   * @member {utils.EmitterMixin} #_listenter\n   */\n\t\tthis._listener = Object.create(_emittermixin2.default);\n\n\t\t// Convert changes in model to view.\n\t\tthis._listener.listenTo(this.model, 'change', function (evt, type, changes) {\n\t\t\t_this.modelToView.convertChange(type, changes);\n\t\t}, { priority: 'low' });\n\n\t\t// Convert model selection to view.\n\t\tthis._listener.listenTo(this.model, 'changesDone', function () {\n\t\t\tvar selection = _this.model.selection;\n\n\t\t\t_this.modelToView.convertSelection(selection);\n\t\t\t_this.view.render();\n\t\t}, { priority: 'low' });\n\n\t\t// Convert model markers changes.\n\t\tthis._listener.listenTo(this.model.markers, 'add', function (evt, marker) {\n\t\t\t_this.modelToView.convertMarker('addMarker', marker.name, marker.getRange());\n\t\t});\n\n\t\tthis._listener.listenTo(this.model.markers, 'remove', function (evt, marker) {\n\t\t\t_this.modelToView.convertMarker('removeMarker', marker.name, marker.getRange());\n\t\t});\n\n\t\t// Convert view selection to model.\n\t\tthis._listener.listenTo(this.view, 'selectionChange', (0, _viewSelectionToModelConverters.convertSelectionChange)(this.model, this.mapper));\n\n\t\t// Attach default content converters.\n\t\tthis.modelToView.on('insert:$text', (0, _modelToViewConverters.insertText)(), { priority: 'lowest' });\n\t\tthis.modelToView.on('remove', (0, _modelToViewConverters.remove)(), { priority: 'low' });\n\n\t\t// Attach default selection converters.\n\t\tthis.modelToView.on('selection', (0, _modelSelectionToViewConverters.clearAttributes)(), { priority: 'low' });\n\t\tthis.modelToView.on('selection', (0, _modelSelectionToViewConverters.clearFakeSelection)(), { priority: 'low' });\n\t\tthis.modelToView.on('selection', (0, _modelSelectionToViewConverters.convertRangeSelection)(), { priority: 'low' });\n\t\tthis.modelToView.on('selection', (0, _modelSelectionToViewConverters.convertCollapsedSelection)(), { priority: 'low' });\n\t}\n\n\t/**\n  * {@link module:engine/view/document~Document#createRoot Creates} a view root\n  * and {@link module:engine/conversion/mapper~Mapper#bindElements binds}\n  * the model root with view root and and view root with DOM element:\n  *\n  *\t\tediting.createRoot( document.querySelector( div#editor ) );\n  *\n  * If the DOM element is not available at the time you want to create a view root, for instance it is iframe body\n  * element, it is possible to create view element and bind the DOM element later:\n  *\n  *\t\tediting.createRoot( 'body' );\n  *\t\tediting.view.attachDomRoot( iframe.contentDocument.body );\n  *\n  * @param {Element|String} domRoot DOM root element or the name of view root element if the DOM element will be\n  * attached later.\n  * @param {String} [name='main'] Root name.\n  * @returns {module:engine/view/containerelement~ContainerElement} View root element.\n  */\n\n\n\t_createClass(EditingController, [{\n\t\tkey: 'createRoot',\n\t\tvalue: function createRoot(domRoot) {\n\t\t\tvar name = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 'main';\n\n\t\t\tvar viewRoot = this.view.createRoot(domRoot, name);\n\t\t\tvar modelRoot = this.model.getRoot(name);\n\n\t\t\tthis.mapper.bindElements(modelRoot, viewRoot);\n\n\t\t\treturn viewRoot;\n\t\t}\n\n\t\t/**\n   * Removes all event listeners attached to the `EditingController`. Destroys all objects created\n   * by `EditingController` that need to be destroyed.\n   */\n\n\t}, {\n\t\tkey: 'destroy',\n\t\tvalue: function destroy() {\n\t\t\tthis.view.destroy();\n\t\t\tthis._listener.stopListening();\n\t\t}\n\t}]);\n\n\treturn EditingController;\n}();\n\nexports.default = EditingController;\n\n/***/ }),\n/* 301 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\nexports.default = getSelectedContent;\n\nvar _documentfragment = __webpack_require__(67);\n\nvar _documentfragment2 = _interopRequireDefault(_documentfragment);\n\nvar _range = __webpack_require__(3);\n\nvar _range2 = _interopRequireDefault(_range);\n\nvar _position = __webpack_require__(1);\n\nvar _position2 = _interopRequireDefault(_position);\n\nvar _text = __webpack_require__(23);\n\nvar _text2 = _interopRequireDefault(_text);\n\nvar _writer = __webpack_require__(28);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Gets a clone of the selected content.\n *\n * For example, for the following selection:\n *\n *\t\t<p>x</p><quote><p>y</p><h>fir[st</h></quote><p>se]cond</p><p>z</p>\n *\n * It will return a document fragment with such a content:\n *\n *\t\t<quote><h>st</h></quote><p>se</p>\n *\n * @param {module:engine/model/selection~Selection} selection The selection of which content will be returned.\n * @returns {module:engine/model/documentfragment~DocumentFragment}\n */\nfunction getSelectedContent(selection) {\n\tvar frag = new _documentfragment2.default();\n\tvar range = selection.getFirstRange();\n\n\tif (!range || range.isCollapsed) {\n\t\treturn frag;\n\t}\n\n\tvar root = range.start.root;\n\tvar commonPath = range.start.getCommonPath(range.end);\n\tvar commonParent = root.getNodeByPath(commonPath);\n\n\t// ## 1st step\n\t//\n\t// First, we'll clone a fragment represented by a minimal flat range\n\t// containing the original range to be cloned.\n\t// E.g. let's consider such a range:\n\t//\n\t// <p>x</p><quote><p>y</p><h>fir[st</h></quote><p>se]cond</p><p>z</p>\n\t//\n\t// A minimal flat range containing this one is:\n\t//\n\t// <p>x</p>[<quote><p>y</p><h>first</h></quote><p>second</p>]<p>z</p>\n\t//\n\t// We can easily clone this structure, preserving e.g. the <quote> element.\n\tvar flatSubtreeRange = void 0;\n\n\tif (range.start.parent == range.end.parent) {\n\t\t// The original range is flat, so take it.\n\t\tflatSubtreeRange = range;\n\t} else {\n\t\tflatSubtreeRange = _range2.default.createFromParentsAndOffsets(commonParent, range.start.path[commonPath.length], commonParent, range.end.path[commonPath.length] + 1);\n\t}\n\n\tvar howMany = flatSubtreeRange.end.offset - flatSubtreeRange.start.offset;\n\n\t// Clone the whole contents.\n\tvar _iteratorNormalCompletion = true;\n\tvar _didIteratorError = false;\n\tvar _iteratorError = undefined;\n\n\ttry {\n\t\tfor (var _iterator = flatSubtreeRange.getItems({ shallow: true })[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\tvar item = _step.value;\n\n\t\t\tif (item.is('textProxy')) {\n\t\t\t\tfrag.appendChildren(new _text2.default(item.data, item.getAttributes()));\n\t\t\t} else {\n\t\t\t\tfrag.appendChildren(item.clone(true));\n\t\t\t}\n\t\t}\n\n\t\t// ## 2nd step\n\t\t//\n\t\t// If the original range wasn't flat, then we need to remove the excess nodes from the both ends of the cloned fragment.\n\t\t//\n\t\t// For example, for the range shown in the 1st step comment, we need to remove these pieces:\n\t\t//\n\t\t// <quote>[<p>y</p>]<h>[fir]st</h></quote><p>se[cond]</p>\n\t\t//\n\t\t// So this will be the final copied content:\n\t\t//\n\t\t// <quote><h>st</h></quote><p>se</p>\n\t\t//\n\t\t// In order to do that, we remove content from these two ranges:\n\t\t//\n\t\t// [<quote><p>y</p><h>fir]st</h></quote><p>se[cond</p>]\n\t} catch (err) {\n\t\t_didIteratorError = true;\n\t\t_iteratorError = err;\n\t} finally {\n\t\ttry {\n\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t_iterator.return();\n\t\t\t}\n\t\t} finally {\n\t\t\tif (_didIteratorError) {\n\t\t\t\tthrow _iteratorError;\n\t\t\t}\n\t\t}\n\t}\n\n\tif (flatSubtreeRange != range) {\n\t\t// Find the position of the original range in the cloned fragment.\n\t\tvar newRange = range._getTransformedByMove(flatSubtreeRange.start, _position2.default.createAt(frag, 0), howMany)[0];\n\n\t\tvar leftExcessRange = new _range2.default(_position2.default.createAt(frag), newRange.start);\n\t\tvar rightExcessRange = new _range2.default(newRange.end, _position2.default.createAt(frag, 'end'));\n\n\t\tremoveRangeContent(rightExcessRange);\n\t\tremoveRangeContent(leftExcessRange);\n\t}\n\n\treturn frag;\n}\n\n// After https://github.com/ckeditor/ckeditor5-engine/issues/690 is fixed,\n// this function will, most likely, be able to rewritten using getMinimalFlatRanges().\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/controller/getselectedcontent\n */\n\nfunction removeRangeContent(range) {\n\tvar parentsToCheck = [];\n\n\tArray.from(range.getItems({ direction: 'backward' }))\n\t// We should better store ranges because text proxies will lose integrity\n\t// with the text nodes when we'll start removing content.\n\t.map(function (item) {\n\t\treturn _range2.default.createOn(item);\n\t})\n\t// Filter only these items which are fully contained in the passed range.\n\t//\n\t// E.g. for the following range: [<quote><p>y</p><h>fir]st</h>\n\t// the walker will return the entire <h> element, when only the \"fir\" item inside it is fully contained.\n\t.filter(function (itemRange) {\n\t\t// We should be able to use Range.containsRange, but https://github.com/ckeditor/ckeditor5-engine/issues/691.\n\t\tvar contained = (itemRange.start.isAfter(range.start) || itemRange.start.isEqual(range.start)) && (itemRange.end.isBefore(range.end) || itemRange.end.isEqual(range.end));\n\n\t\treturn contained;\n\t}).forEach(function (itemRange) {\n\t\tparentsToCheck.push(itemRange.start.parent);\n\n\t\t(0, _writer.remove)(itemRange);\n\t});\n\n\t// Remove ancestors of the removed items if they turned to be empty now\n\t// (their whole content was contained in the range).\n\tparentsToCheck.forEach(function (parentToCheck) {\n\t\tvar parent = parentToCheck;\n\n\t\twhile (parent.parent && parent.isEmpty) {\n\t\t\tvar removeRange = _range2.default.createOn(parent);\n\n\t\t\tparent = parent.parent;\n\n\t\t\t(0, _writer.remove)(removeRange);\n\t\t}\n\t});\n}\n\n/***/ }),\n/* 302 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module engine/controller/insertcontent\n */\n\nexports.default = insertContent;\n\nvar _position2 = __webpack_require__(1);\n\nvar _position3 = _interopRequireDefault(_position2);\n\nvar _liveposition = __webpack_require__(165);\n\nvar _liveposition2 = _interopRequireDefault(_liveposition);\n\nvar _element = __webpack_require__(5);\n\nvar _element2 = _interopRequireDefault(_element);\n\nvar _range = __webpack_require__(3);\n\nvar _range2 = _interopRequireDefault(_range);\n\nvar _log = __webpack_require__(54);\n\nvar _log2 = _interopRequireDefault(_log);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * Inserts content into the editor (specified selection) as one would expect the paste\n * functionality to work.\n *\n * **Note:** Use {@link module:engine/controller/datacontroller~DataController#insertContent} instead of this function.\n * This function is only exposed to be reusable in algorithms\n * which change the {@link module:engine/controller/datacontroller~DataController#insertContent}\n * method's behavior.\n *\n * @param {module:engine/controller/datacontroller~DataController} dataController The data controller in context of which the insertion\n * should be performed.\n * @param {module:engine/model/documentfragment~DocumentFragment} content The content to insert.\n * @param {module:engine/model/selection~Selection} selection Selection into which the content should be inserted.\n * @param {module:engine/model/batch~Batch} [batch] Batch to which deltas will be added. If not specified, then\n * changes will be added to a new batch.\n */\nfunction insertContent(dataController, content, selection, batch) {\n\tif (!batch) {\n\t\tbatch = dataController.model.batch();\n\t}\n\n\tif (!selection.isCollapsed) {\n\t\tdataController.deleteContent(selection, batch, {\n\t\t\tmerge: true\n\t\t});\n\t}\n\n\tvar insertion = new Insertion(dataController, batch, selection.anchor);\n\n\tinsertion.handleNodes(content.getChildren(), {\n\t\t// The set of children being inserted is the only set in this context\n\t\t// so it's the first and last (it's a hack ;)).\n\t\tisFirst: true,\n\t\tisLast: true\n\t});\n\n\tvar newRange = insertion.getSelectionRange();\n\n\t/* istanbul ignore else */\n\tif (newRange) {\n\t\tselection.setRanges([newRange]);\n\t} else {\n\t\t// We are not testing else because it's a safe check for unpredictable edge cases:\n\t\t// an insertion without proper range to select.\n\n\t\t/**\n   * Cannot determine a proper selection range after insertion.\n   *\n   * @warning insertcontent-no-range\n   */\n\t\t_log2.default.warn('insertcontent-no-range: Cannot determine a proper selection range after insertion.');\n\t}\n}\n\n/**\n * Utility class for performing content insertion.\n *\n * @private\n */\n\nvar Insertion = function () {\n\tfunction Insertion(dataController, batch, position) {\n\t\t_classCallCheck(this, Insertion);\n\n\t\t/**\n   * The data controller in context of which the insertion should be performed.\n   *\n   * @member {module:engine/controller/datacontroller~DataController} #dataController\n   */\n\t\tthis.dataController = dataController;\n\n\t\t/**\n   * Batch to which deltas will be added.\n   *\n   * @member {module:engine/controller/batch~Batch} #batch\n   */\n\t\tthis.batch = batch;\n\n\t\t/**\n   * The position at which (or near which) the next node will be inserted.\n   *\n   * @member {module:engine/model/position~Position} #position\n   */\n\t\tthis.position = position;\n\n\t\t/**\n   * Elements with which the inserted elements can be merged.\n   *\n   *\t\t<p>x^</p><p>y</p> + <p>z</p> (can merge to <p>x</p>)\n   *\t\t<p>x</p><p>^y</p> + <p>z</p> (can merge to <p>y</p>)\n   *\t\t<p>x^y</p> + <p>z</p> (can merge to <p>xy</p> which will be split during the action,\n   *\t\t\t\t\t\t\t\tso both its pieces will be added to this set)\n   *\n   *\n   * @member {Set} #canMergeWith\n   */\n\t\tthis.canMergeWith = new Set([this.position.parent]);\n\n\t\t/**\n   * Schema of the model.\n   *\n   * @member {module:engine/model/schema~Schema} #schema\n   */\n\t\tthis.schema = dataController.model.schema;\n\t}\n\n\t/**\n  * Handles insertion of a set of nodes.\n  *\n  * @param {Iterable.<module:engine/model/node~Node>} nodes Nodes to insert.\n  * @param {Object} parentContext Context in which parent of these nodes was supposed to be inserted.\n  * If the parent context is passed it means that the parent element was stripped (was not allowed).\n  */\n\n\n\t_createClass(Insertion, [{\n\t\tkey: 'handleNodes',\n\t\tvalue: function handleNodes(nodes, parentContext) {\n\t\t\tnodes = Array.from(nodes);\n\n\t\t\tfor (var i = 0; i < nodes.length; i++) {\n\t\t\t\tvar node = nodes[i].clone();\n\n\t\t\t\tthis._handleNode(node, {\n\t\t\t\t\tisFirst: i === 0 && parentContext.isFirst,\n\t\t\t\t\tisLast: i === nodes.length - 1 && parentContext.isLast\n\t\t\t\t});\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Returns range to be selected after insertion.\n   * Returns null if there is no valid range to select after insertion.\n   *\n   * @returns {module:engine/model/range~Range|null}\n   */\n\n\t}, {\n\t\tkey: 'getSelectionRange',\n\t\tvalue: function getSelectionRange() {\n\t\t\tif (this.nodeToSelect) {\n\t\t\t\treturn _range2.default.createOn(this.nodeToSelect);\n\t\t\t}\n\n\t\t\treturn this.dataController.model.getNearestSelectionRange(this.position);\n\t\t}\n\n\t\t/**\n   * Handles insertion of a single node.\n   *\n   * @param {module:engine/model/node~Node} node\n   * @param {Object} context\n   * @param {Boolean} context.isFirst Whether the given node is the first one in the content to be inserted.\n   * @param {Boolean} context.isLast Whether the given node is the last one in the content to be inserted.\n   */\n\n\t}, {\n\t\tkey: '_handleNode',\n\t\tvalue: function _handleNode(node, context) {\n\t\t\t// Let's handle object in a special way.\n\t\t\t// * They should never be merged with other elements.\n\t\t\t// * If they are not allowed in any of the selection ancestors, they could be either autoparagraphed or totally removed.\n\t\t\tif (this._checkIsObject(node)) {\n\t\t\t\tthis._handleObject(node, context);\n\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// Try to find a place for the given node.\n\t\t\t// Split the position.parent's branch up to a point where the node can be inserted.\n\t\t\t// If it isn't allowed in the whole branch, then of course don't split anything.\n\t\t\tvar isAllowed = this._checkAndSplitToAllowedPosition(node, context);\n\n\t\t\tif (!isAllowed) {\n\t\t\t\tthis._handleDisallowedNode(node, context);\n\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tthis._insert(node);\n\n\t\t\t// After the node was inserted we may try to merge it with its siblings.\n\t\t\t// This should happen only if it was the first and/or last of the nodes (so only with boundary nodes)\n\t\t\t// and only if the selection was in those elements initially.\n\t\t\t//\n\t\t\t// E.g.:\n\t\t\t// <p>x^</p> + <p>y</p> => <p>x</p><p>y</p> => <p>xy[]</p>\n\t\t\t// and:\n\t\t\t// <p>x^y</p> + <p>z</p> => <p>x</p>^<p>y</p> + <p>z</p> => <p>x</p><p>y</p><p>z</p> => <p>xy[]z</p>\n\t\t\t// but:\n\t\t\t// <p>x</p><p>^</p><p>z</p> + <p>y</p> => <p>x</p><p>y</p><p>z</p> (no merging)\n\t\t\t// <p>x</p>[<img>]<p>z</p> + <p>y</p> => <p>x</p><p>y</p><p>z</p> (no merging, note: after running deletetContents\n\t\t\t//\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t it's exactly the same case as above)\n\t\t\tthis._mergeSiblingsOf(node, context);\n\t\t}\n\n\t\t/**\n   * @param {module:engine/model/element~Element} node The object element.\n   * @param {Object} context\n   */\n\n\t}, {\n\t\tkey: '_handleObject',\n\t\tvalue: function _handleObject(node, context) {\n\t\t\t// Try finding it a place in the tree.\n\t\t\tif (this._checkAndSplitToAllowedPosition(node)) {\n\t\t\t\tthis._insert(node);\n\t\t\t}\n\t\t\t// Try autoparagraphing.\n\t\t\telse {\n\t\t\t\t\tthis._tryAutoparagraphing(node, context);\n\t\t\t\t}\n\t\t}\n\n\t\t/**\n   * @param {module:engine/model/node~Node} node The disallowed node which needs to be handled.\n   * @param {Object} context\n   */\n\n\t}, {\n\t\tkey: '_handleDisallowedNode',\n\t\tvalue: function _handleDisallowedNode(node, context) {\n\t\t\t// Try inserting its children (strip the parent).\n\t\t\tif (node.is('element')) {\n\t\t\t\tthis.handleNodes(node.getChildren(), context);\n\t\t\t}\n\t\t\t// Try autoparagraphing.\n\t\t\telse {\n\t\t\t\t\tthis._tryAutoparagraphing(node, context);\n\t\t\t\t}\n\t\t}\n\n\t\t/**\n   * @param {module:engine/model/node~Node} node The node to insert.\n   */\n\n\t}, {\n\t\tkey: '_insert',\n\t\tvalue: function _insert(node) {\n\t\t\t/* istanbul ignore if */\n\t\t\tif (!this._checkIsAllowed(node, [this.position.parent])) {\n\t\t\t\t// Algorithm's correctness check. We should never end up here but it's good to know that we did.\n\t\t\t\t// Note that it would often be a silent issue if we insert node in a place where it's not allowed.\n\t\t\t\t_log2.default.error('insertcontent-wrong-position: The node cannot be inserted on the given position.', { node: node, position: this.position });\n\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tvar livePos = _liveposition2.default.createFromPosition(this.position);\n\n\t\t\tthis.batch.insert(this.position, node);\n\n\t\t\tthis.position = _position3.default.createFromPosition(livePos);\n\t\t\tlivePos.detach();\n\n\t\t\t// The last inserted object should be selected because we can't put a collapsed selection after it.\n\t\t\tif (this._checkIsObject(node) && !this.schema.check({ name: '$text', inside: [this.position.parent] })) {\n\t\t\t\tthis.nodeToSelect = node;\n\t\t\t} else {\n\t\t\t\tthis.nodeToSelect = null;\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * @param {module:engine/model/node~Node} node The node which could potentially be merged.\n   * @param {Object} context\n   */\n\n\t}, {\n\t\tkey: '_mergeSiblingsOf',\n\t\tvalue: function _mergeSiblingsOf(node, context) {\n\t\t\tif (!(node instanceof _element2.default)) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tvar mergeLeft = context.isFirst && node.previousSibling instanceof _element2.default && this.canMergeWith.has(node.previousSibling);\n\t\t\tvar mergeRight = context.isLast && node.nextSibling instanceof _element2.default && this.canMergeWith.has(node.nextSibling);\n\t\t\tvar mergePosLeft = _liveposition2.default.createBefore(node);\n\t\t\tvar mergePosRight = _liveposition2.default.createAfter(node);\n\n\t\t\tif (mergeLeft) {\n\t\t\t\tvar position = _liveposition2.default.createFromPosition(this.position);\n\n\t\t\t\tthis.batch.merge(mergePosLeft);\n\n\t\t\t\tthis.position = _position3.default.createFromPosition(position);\n\t\t\t\tposition.detach();\n\t\t\t}\n\n\t\t\tif (mergeRight) {\n\t\t\t\tvar _position = void 0;\n\n\t\t\t\t/* istanbul ignore if */\n\t\t\t\tif (!this.position.isEqual(mergePosRight)) {\n\t\t\t\t\t// Algorithm's correctness check. We should never end up here but it's good to know that we did.\n\t\t\t\t\t// At this point the insertion position should be after the node we'll merge. If it isn't,\n\t\t\t\t\t// it should need to be secured as in the left merge case.\n\t\t\t\t\t_log2.default.error('insertcontent-wrong-position-on-merge: The insertion position should equal the merge position');\n\t\t\t\t}\n\n\t\t\t\t// Move the position to the previous node, so it isn't moved to the graveyard on merge.\n\t\t\t\t// <p>x</p>[]<p>y</p> => <p>x[]</p><p>y</p>\n\t\t\t\tthis.position = _position3.default.createAt(mergePosRight.nodeBefore, 'end');\n\n\t\t\t\t// OK:  <p>xx[]</p> + <p>yy</p> => <p>xx[]yy</p> (when sticks to previous)\n\t\t\t\t// NOK: <p>xx[]</p> + <p>yy</p> => <p>xxyy[]</p> (when sticks to next)\n\t\t\t\t_position = new _liveposition2.default(this.position.root, this.position.path, 'sticksToPrevious');\n\n\t\t\t\tthis.batch.merge(mergePosRight);\n\n\t\t\t\tthis.position = _position3.default.createFromPosition(_position);\n\t\t\t\t_position.detach();\n\t\t\t}\n\n\t\t\tmergePosLeft.detach();\n\t\t\tmergePosRight.detach();\n\t\t}\n\n\t\t/**\n   * Tries wrapping the node in a new paragraph and inserting it this way.\n   *\n   * @param {module:engine/model/node~Node} node The node which needs to be autoparagraphed.\n   * @param {Object} context\n   */\n\n\t}, {\n\t\tkey: '_tryAutoparagraphing',\n\t\tvalue: function _tryAutoparagraphing(node, context) {\n\t\t\tvar paragraph = new _element2.default('paragraph');\n\n\t\t\t// Do not autoparagraph if the paragraph won't be allowed there,\n\t\t\t// cause that would lead to an infinite loop. The paragraph would be rejected in\n\t\t\t// the next _handleNode() call and we'd be here again.\n\t\t\tif (this._getAllowedIn(paragraph, this.position.parent) && this._checkIsAllowed(node, [paragraph])) {\n\t\t\t\tparagraph.appendChildren(node);\n\n\t\t\t\tthis._handleNode(paragraph, context);\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * @param {module:engine/model/node~Node} node\n   * @returns {Boolean} Whether an allowed position was found.\n   * `false` is returned if the node isn't allowed at any position up in the tree, `true` if was.\n   */\n\n\t}, {\n\t\tkey: '_checkAndSplitToAllowedPosition',\n\t\tvalue: function _checkAndSplitToAllowedPosition(node) {\n\t\t\tvar allowedIn = this._getAllowedIn(node, this.position.parent);\n\n\t\t\tif (!allowedIn) {\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\twhile (allowedIn != this.position.parent) {\n\t\t\t\t// If a parent which we'd need to leave is a limit element, break.\n\t\t\t\tif (this.schema.limits.has(this.position.parent.name)) {\n\t\t\t\t\treturn false;\n\t\t\t\t}\n\n\t\t\t\tif (this.position.isAtStart) {\n\t\t\t\t\tvar parent = this.position.parent;\n\t\t\t\t\tthis.position = _position3.default.createBefore(parent);\n\n\t\t\t\t\t// Special case – parent is empty (<p>^</p>) so isAtStart == isAtEnd == true.\n\t\t\t\t\t// We can remove the element after moving selection out of it.\n\t\t\t\t\tif (parent.isEmpty) {\n\t\t\t\t\t\tthis.batch.remove(parent);\n\t\t\t\t\t}\n\t\t\t\t} else if (this.position.isAtEnd) {\n\t\t\t\t\tthis.position = _position3.default.createAfter(this.position.parent);\n\t\t\t\t} else {\n\t\t\t\t\tvar tempPos = _position3.default.createAfter(this.position.parent);\n\n\t\t\t\t\tthis.batch.split(this.position);\n\n\t\t\t\t\tthis.position = tempPos;\n\n\t\t\t\t\tthis.canMergeWith.add(this.position.nodeAfter);\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn true;\n\t\t}\n\n\t\t/**\n   * Gets the element in which the given node is allowed. It checks the passed element and all its ancestors.\n   *\n   * @param {module:engine/model/node~Node} node The node to check.\n   * @param {module:engine/model/element~Element} element The element in which the node's correctness should be checked.\n   * @returns {module:engine/model/element~Element|null}\n   */\n\n\t}, {\n\t\tkey: '_getAllowedIn',\n\t\tvalue: function _getAllowedIn(node, element) {\n\t\t\tif (this._checkIsAllowed(node, [element])) {\n\t\t\t\treturn element;\n\t\t\t}\n\n\t\t\tif (element.parent) {\n\t\t\t\treturn this._getAllowedIn(node, element.parent);\n\t\t\t}\n\n\t\t\treturn null;\n\t\t}\n\n\t\t/**\n   * Check whether the given node is allowed in the specified schema path.\n   *\n   * @param {module:engine/model/node~Node} node\n   * @param {module:engine/model/schema~SchemaPath} path\n   */\n\n\t}, {\n\t\tkey: '_checkIsAllowed',\n\t\tvalue: function _checkIsAllowed(node, path) {\n\t\t\treturn this.schema.check({\n\t\t\t\tname: this._getNodeSchemaName(node),\n\t\t\t\tattributes: Array.from(node.getAttributeKeys()),\n\t\t\t\tinside: path\n\t\t\t});\n\t\t}\n\n\t\t/**\n   * Checks wether according to the schema this is an object type element.\n   *\n   * @param {module:engine/model/node~Node} node The node to check.\n   */\n\n\t}, {\n\t\tkey: '_checkIsObject',\n\t\tvalue: function _checkIsObject(node) {\n\t\t\treturn this.schema.objects.has(this._getNodeSchemaName(node));\n\t\t}\n\n\t\t/**\n   * Gets a name under which we should check this node in the schema.\n   *\n   * @param {module:engine/model/node~Node} node The node.\n   */\n\n\t}, {\n\t\tkey: '_getNodeSchemaName',\n\t\tvalue: function _getNodeSchemaName(node) {\n\t\t\tif (node.is('text')) {\n\t\t\t\treturn '$text';\n\t\t\t}\n\n\t\t\treturn node.name;\n\t\t}\n\t}]);\n\n\treturn Insertion;\n}();\n\n/***/ }),\n/* 303 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\nexports.default = modifySelection;\n\nvar _position = __webpack_require__(1);\n\nvar _position2 = _interopRequireDefault(_position);\n\nvar _treewalker = __webpack_require__(38);\n\nvar _treewalker2 = _interopRequireDefault(_treewalker);\n\nvar _range = __webpack_require__(3);\n\nvar _range2 = _interopRequireDefault(_range);\n\nvar _unicode = __webpack_require__(277);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Modifies the selection. Currently, the supported modifications are:\n *\n * * Extending. The selection focus is moved in the specified `options.direction` with a step specified in `options.unit`.\n * Possible values for `unit` are:\n *  * `'character'` (default) - moves selection by one user-perceived character. In most cases this means moving by one\n *  character in `String` sense. However, unicode also defines \"combing marks\". These are special symbols, that combines\n *  with a symbol before it (\"base character\") to create one user-perceived character. For example, `q̣̇` is a normal\n *  letter `q` with two \"combining marks\": upper dot (`Ux0307`) and lower dot (`Ux0323`). For most actions, i.e. extending\n *  selection by one position, it is correct to include both \"base character\" and all of it's \"combining marks\". That is\n *  why `'character'` value is most natural and common method of modifying selection.\n *  * `'codePoint'` - moves selection by one unicode code point. In contrary to, `'character'` unit, this will insert\n *  selection between \"base character\" and \"combining mark\", because \"combining marks\" have their own unicode code points.\n *  However, for technical reasons, unicode code points with values above `UxFFFF` are represented in native `String` by\n *  two characters, called \"surrogate pairs\". Halves of \"surrogate pairs\" have a meaning only when placed next to each other.\n *  For example `𨭎` is represented in `String` by `\\uD862\\uDF4E`. Both `\\uD862` and `\\uDF4E` do not have any meaning\n *  outside the pair (are rendered as ? when alone). Position between them would be incorrect. In this case, selection\n *  extension will include whole \"surrogate pair\".\n *\n * **Note:** if you extend a forward selection in a backward direction you will in fact shrink it.\n *\n * @param {module:engine/controller/datacontroller~DataController} dataController The data controller in context of which\n * the selection modification should be performed.\n * @param {module:engine/model/selection~Selection} selection The selection to modify.\n * @param {Object} [options]\n * @param {'forward'|'backward'} [options.direction='forward'] The direction in which the selection should be modified.\n * @param {'character'|'codePoint'} [options.unit='character'] The unit by which selection should be modified.\n */\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/controller/modifyselection\n */\n\nfunction modifySelection(dataController, selection) {\n\tvar options = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};\n\n\tvar schema = dataController.model.schema;\n\tvar isForward = options.direction != 'backward';\n\tvar unit = options.unit ? options.unit : 'character';\n\n\tvar focus = selection.focus;\n\tvar walker = new _treewalker2.default({\n\t\tboundaries: getSearchRange(focus, isForward),\n\t\tsingleCharacters: true,\n\t\tdirection: isForward ? 'forward' : 'backward'\n\t});\n\n\tvar data = { walker: walker, schema: schema, isForward: isForward, unit: unit };\n\n\tvar next = void 0;\n\n\twhile (next = walker.next()) {\n\t\tif (next.done) {\n\t\t\treturn;\n\t\t}\n\n\t\tvar position = tryExtendingTo(data, next.value);\n\n\t\tif (position) {\n\t\t\tselection.setFocus(position);\n\n\t\t\treturn;\n\t\t}\n\t}\n}\n\n// Checks whether the selection can be extended to the the walker's next value (next position).\nfunction tryExtendingTo(data, value) {\n\t// If found text, we can certainly put the focus in it. Let's just find a correct position\n\t// based on the unit.\n\tif (value.type == 'text') {\n\t\treturn getCorrectPosition(data.walker, data.unit);\n\t}\n\n\t// Entering an element.\n\tif (value.type == (data.isForward ? 'elementStart' : 'elementEnd')) {\n\t\t// If it's an object, we can select it now.\n\t\tif (data.schema.objects.has(value.item.name)) {\n\t\t\treturn _position2.default.createAt(value.item, data.isForward ? 'after' : 'before');\n\t\t}\n\n\t\t// If text allowed on this position, extend to this place.\n\t\tif (data.schema.check({ name: '$text', inside: value.nextPosition })) {\n\t\t\treturn value.nextPosition;\n\t\t}\n\t}\n\t// Leaving an element.\n\telse {\n\t\t\t// If leaving a limit element, stop.\n\t\t\tif (data.schema.limits.has(value.item.name)) {\n\t\t\t\t// NOTE: Fast-forward the walker until the end.\n\t\t\t\tdata.walker.skip(function () {\n\t\t\t\t\treturn true;\n\t\t\t\t});\n\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// If text allowed on this position, extend to this place.\n\t\t\tif (data.schema.check({ name: '$text', inside: value.nextPosition })) {\n\t\t\t\treturn value.nextPosition;\n\t\t\t}\n\t\t}\n}\n\n// Finds a correct position by walking in a text node and checking whether selection can be extended to given position\n// or should be extended further.\nfunction getCorrectPosition(walker, unit) {\n\tvar textNode = walker.position.textNode;\n\n\tif (textNode) {\n\t\tvar data = textNode.data;\n\t\tvar offset = walker.position.offset - textNode.startOffset;\n\n\t\twhile ((0, _unicode.isInsideSurrogatePair)(data, offset) || unit == 'character' && (0, _unicode.isInsideCombinedSymbol)(data, offset)) {\n\t\t\twalker.next();\n\n\t\t\toffset = walker.position.offset - textNode.startOffset;\n\t\t}\n\t}\n\n\treturn walker.position;\n}\n\nfunction getSearchRange(start, isForward) {\n\tvar root = start.root;\n\tvar searchEnd = _position2.default.createAt(root, isForward ? 'end' : 0);\n\n\tif (isForward) {\n\t\treturn new _range2.default(start, searchEnd);\n\t} else {\n\t\treturn new _range2.default(searchEnd, start);\n\t}\n}\n\n/***/ }),\n/* 304 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module engine/conversion/modelconsumable\n */\n\nvar _textproxy = __webpack_require__(56);\n\nvar _textproxy2 = _interopRequireDefault(_textproxy);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * Manages a list of consumable values for {@link module:engine/model/item~Item model items}.\n *\n * Consumables are various aspects of the model. A model item can be broken down into singular properties that might be\n * taken into consideration when converting that item.\n *\n * `ModelConsumable` is used by {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher} while analyzing changed\n * parts of {@link module:engine/model/document~Document the document}. The added / changed / removed model items are broken down\n * into singular properties (the item itself and it's attributes). All those parts are saved in `ModelConsumable`. Then,\n * during conversion, when given part of model item is converted (i.e. the view element has been inserted into the view,\n * but without attributes), consumable value is removed from `ModelConsumable`.\n *\n * For model items, `ModelConsumable` stores consumable values of one of following types: `insert`, `addAttribute:<attributeKey>`,\n * `changeAttribute:<attributeKey>`, `removeAttribute:<attributeKey>`.\n *\n * In most cases, it is enough to let {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher}\n * gather consumable values, so there is no need to use\n * @link module:engine/conversion/modelconsumable~ModelConsumable#add add method} directly.\n * However, it is important to understand how consumable values can be\n * {@link module:engine/conversion/modelconsumable~ModelConsumable#consume consumed}.\n * See {@link module:engine/conversion/model-selection-to-view-converters default model to view converters} for more information.\n *\n * Keep in mind, that one conversion event may have multiple callbacks (converters) attached to it. Each of those is\n * able to convert one or more parts of the model. However, when one of those callbacks actually converts\n * something, other should not, because they would duplicate the results. Using `ModelConsumable` helps avoiding\n * this situation, because callbacks should only convert those values, which were not yet consumed from `ModelConsumable`.\n *\n * Consuming multiple values in a single callback:\n *\n *\t\t// Converter for custom `image` element that might have a `caption` element inside which changes\n *\t\t// how the image is displayed in the view:\n *\t\t//\n *\t\t// Model:\n *\t\t//\n *\t\t// [image]\n *\t\t//   └─ [caption]\n *\t\t//       └─ foo\n *\t\t//\n *\t\t// View:\n *\t\t//\n *\t\t// <figure>\n *\t\t//   ├─ <img />\n *\t\t//   └─ <caption>\n *\t\t//       └─ foo\n *\t\tmodelConversionDispatcher.on( 'insert:image', ( evt, data, consumable, conversionApi ) => {\n *\t\t\t// First, consume the `image` element.\n *\t\t\tconsumable.consume( data.item, 'insert' );\n *\n *\t\t\t// Just create normal image element for the view.\n *\t\t\t// Maybe it will be \"decorated\" later.\n *\t\t\tconst viewImage = new ViewElement( 'img' );\n *\t\t\tconst insertPosition = conversionApi.mapper.toViewPosition( data.range.start );\n *\n *\t\t\t// Check if the `image` element has children.\n *\t\t\tif ( data.item.childCount > 0 ) {\n *\t\t\t\tconst modelCaption = data.item.getChild( 0 );\n *\n *\t\t\t\t// `modelCaption` insertion change is consumed from consumable values.\n *\t\t\t\t// It will not be converted by other converters, but it's children (probably some text) will be.\n *\t\t\t\t// Through mapping, converters for text will know where to insert contents of `modelCaption`.\n *\t\t\t\tif ( consumable.consume( modelCaption, 'insert' ) ) {\n *\t\t\t\t\tconst viewCaption = new ViewElement( 'figcaption' );\n *\n *\t\t\t\t\tconst viewImageHolder = new ViewElement( 'figure', null, [ viewImage, viewCaption ] );\n *\n *\t\t\t\t\tconversionApi.mapper.bindElements( modelCaption, viewCaption );\n *\t\t\t\t\tconversionApi.mapper.bindElements( data.item, viewImageHolder );\n *\t\t\t\t\tviewWriter.insert( insertPosition, viewImageHolder );\n *\t\t\t\t}\n *\t\t\t} else {\n *\t\t\t\tconversionApi.mapper.bindElements( data.item, viewImage );\n *\t\t\t\tviewWriter.insert( insertPosition, viewImage );\n *\t\t\t}\n *\n *\t\t\tevt.stop();\n *\t\t} );\n */\nvar ModelConsumable = function () {\n\t/**\n  * Creates an empty consumables list.\n  */\n\tfunction ModelConsumable() {\n\t\t_classCallCheck(this, ModelConsumable);\n\n\t\t/**\n   * Contains list of consumable values.\n   *\n   * @private\n   * @member {Map} module:engine/conversion/modelconsumable~ModelConsumable#_consumable\n   */\n\t\tthis._consumable = new Map();\n\n\t\t/**\n   * For each {@link module:engine/model/textproxy~TextProxy} added to `ModelConsumable`, this registry holds parent\n   * of that `TextProxy` and start and end indices of that `TextProxy`. This allows identification of `TextProxy`\n   * instances that points to the same part of the model but are different instances. Each distinct `TextProxy`\n   * is given unique `Symbol` which is then registered as consumable. This process is transparent for `ModelConsumable`\n   * API user because whenever `TextProxy` is added, tested, consumed or reverted, internal mechanisms of\n   * `ModelConsumable` translates `TextProxy` to that unique `Symbol`.\n   *\n   * @private\n   * @member {Map} module:engine/conversion/modelconsumable~ModelConsumable#_textProxyRegistry\n   */\n\t\tthis._textProxyRegistry = new Map();\n\t}\n\n\t/**\n  * Adds a consumable value to the consumables list and links it with given model item.\n  *\n  *\t\tmodelConsumable.add( modelElement, 'insert' ); // Add `modelElement` insertion change to consumable values.\n  *\t\tmodelConsumable.add( modelElement, 'addAttribute:bold' ); // Add `bold` attribute insertion on `modelElement` change.\n  *\t\tmodelConsumable.add( modelElement, 'removeAttribute:bold' ); // Add `bold` attribute removal on `modelElement` change.\n  *\t\tmodelConsumable.add( modelSelection, 'selection' ); // Add `modelSelection` to consumable values.\n  *\t\tmodelConsumable.add( modelSelection, 'selectionAttribute:bold' ); // Add `bold` attribute on `modelSelection` to consumables.\n  *\t\tmodelConsumable.add( modelRange, 'range' ); // Add `modelRange` to consumable values.\n  *\n  * @param {module:engine/model/item~Item|module:engine/model/selection~Selection|module:engine/model/range~Range} item\n  * Model item, range or selection that has the consumable.\n  * @param {String} type Consumable type.\n  */\n\n\n\t_createClass(ModelConsumable, [{\n\t\tkey: 'add',\n\t\tvalue: function add(item, type) {\n\t\t\tif (item instanceof _textproxy2.default) {\n\t\t\t\titem = this._getSymbolForTextProxy(item);\n\t\t\t}\n\n\t\t\tif (!this._consumable.has(item)) {\n\t\t\t\tthis._consumable.set(item, new Map());\n\t\t\t}\n\n\t\t\tthis._consumable.get(item).set(type, true);\n\t\t}\n\n\t\t/**\n   * Removes given consumable value from given model item.\n   *\n   *\t\tmodelConsumable.consume( modelElement, 'insert' ); // Remove `modelElement` insertion change from consumable values.\n   *\t\tmodelConsumable.consume( modelElement, 'addAttribute:bold' ); // Remove `bold` attribute insertion on `modelElement` change.\n   *\t\tmodelConsumable.consume( modelElement, 'removeAttribute:bold' ); // Remove `bold` attribute removal on `modelElement` change.\n   *\t\tmodelConsumable.consume( modelSelection, 'selection' ); // Remove `modelSelection` from consumable values.\n   *\t\tmodelConsumable.consume( modelSelection, 'selectionAttribute:bold' ); // Remove `bold` on `modelSelection` from consumables.\n   *\t\tmodelConsumable.consume( modelRange, 'range' ); // Remove 'modelRange' from consumable values.\n   *\n   * @param {module:engine/model/item~Item|module:engine/model/selection~Selection|module:engine/model/range~Range} item\n   * Model item, range or selection from which consumable will be consumed.\n   * @param {String} type Consumable type.\n   * @returns {Boolean} `true` if consumable value was available and was consumed, `false` otherwise.\n   */\n\n\t}, {\n\t\tkey: 'consume',\n\t\tvalue: function consume(item, type) {\n\t\t\tif (item instanceof _textproxy2.default) {\n\t\t\t\titem = this._getSymbolForTextProxy(item);\n\t\t\t}\n\n\t\t\tif (this.test(item, type)) {\n\t\t\t\tthis._consumable.get(item).set(type, false);\n\n\t\t\t\treturn true;\n\t\t\t} else {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Tests whether there is a consumable value of given type connected with given model item.\n   *\n   *\t\tmodelConsumable.test( modelElement, 'insert' ); // Check for `modelElement` insertion change.\n   *\t\tmodelConsumable.test( modelElement, 'addAttribute:bold' ); // Check for `bold` attribute insertion on `modelElement` change.\n   *\t\tmodelConsumable.test( modelElement, 'removeAttribute:bold' ); // Check for `bold` attribute removal on `modelElement` change.\n   *\t\tmodelConsumable.test( modelSelection, 'selection' ); // Check if `modelSelection` is consumable.\n   *\t\tmodelConsumable.test( modelSelection, 'selectionAttribute:bold' ); // Check if `bold` on `modelSelection` is consumable.\n   *\t\tmodelConsumable.test( modelRange, 'range' ); // Check if `modelRange` is consumable.\n   *\n   * @param {module:engine/model/item~Item|module:engine/model/selection~Selection|module:engine/model/range~Range} item\n   * Model item, range or selection to be tested.\n   * @param {String} type Consumable type.\n   * @returns {null|Boolean} `null` if such consumable was never added, `false` if the consumable values was\n   * already consumed or `true` if it was added and not consumed yet.\n   */\n\n\t}, {\n\t\tkey: 'test',\n\t\tvalue: function test(item, type) {\n\t\t\tif (item instanceof _textproxy2.default) {\n\t\t\t\titem = this._getSymbolForTextProxy(item);\n\t\t\t}\n\n\t\t\tvar itemConsumables = this._consumable.get(item);\n\n\t\t\tif (itemConsumables === undefined) {\n\t\t\t\treturn null;\n\t\t\t}\n\n\t\t\tvar value = itemConsumables.get(type);\n\n\t\t\tif (value === undefined) {\n\t\t\t\treturn null;\n\t\t\t}\n\n\t\t\treturn value;\n\t\t}\n\n\t\t/**\n   * Reverts consuming of consumable value.\n   *\n   *\t\tmodelConsumable.revert( modelElement, 'insert' ); // Revert consuming `modelElement` insertion change.\n   *\t\tmodelConsumable.revert( modelElement, 'addAttribute:bold' ); // Revert consuming `bold` attribute insert from `modelElement`.\n   *\t\tmodelConsumable.revert( modelElement, 'removeAttribute:bold' ); // Revert consuming `bold` attribute remove from `modelElement`.\n   *\t\tmodelConsumable.revert( modelSelection, 'selection' ); // Revert consuming `modelSelection`.\n   *\t\tmodelConsumable.revert( modelSelection, 'selectionAttribute:bold' ); // Revert consuming `bold` from `modelSelection`.\n   *\t\tmodelConsumable.revert( modelRange, 'range' ); // Revert consuming `modelRange`.\n   *\n   * @param {module:engine/model/item~Item|module:engine/model/selection~Selection|module:engine/model/range~Range} item\n   * Model item, range or selection to be reverted.\n   * @param {String} type Consumable type.\n   * @returns {null|Boolean} `true` if consumable has been reversed, `false` otherwise. `null` if the consumable has\n   * never been added.\n   */\n\n\t}, {\n\t\tkey: 'revert',\n\t\tvalue: function revert(item, type) {\n\t\t\tif (item instanceof _textproxy2.default) {\n\t\t\t\titem = this._getSymbolForTextProxy(item);\n\t\t\t}\n\n\t\t\tvar test = this.test(item, type);\n\n\t\t\tif (test === false) {\n\t\t\t\tthis._consumable.get(item).set(type, true);\n\n\t\t\t\treturn true;\n\t\t\t} else if (test === true) {\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\treturn null;\n\t\t}\n\n\t\t/**\n   * Gets a unique symbol for passed {@link module:engine/model/textproxy~TextProxy} instance. All `TextProxy` instances that\n   * have same parent, same start index and same end index will get the same symbol.\n   *\n   * Used internally to correctly consume `TextProxy` instances.\n   *\n   * @private\n   * @param {module:engine/model/textproxy~TextProxy} textProxy `TextProxy` instance to get a symbol for.\n   * @returns {Symbol} Symbol representing all equal instances of `TextProxy`.\n   */\n\n\t}, {\n\t\tkey: '_getSymbolForTextProxy',\n\t\tvalue: function _getSymbolForTextProxy(textProxy) {\n\t\t\tvar symbol = null;\n\n\t\t\tvar startMap = this._textProxyRegistry.get(textProxy.startOffset);\n\n\t\t\tif (startMap) {\n\t\t\t\tvar endMap = startMap.get(textProxy.endOffset);\n\n\t\t\t\tif (endMap) {\n\t\t\t\t\tsymbol = endMap.get(textProxy.parent);\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tif (!symbol) {\n\t\t\t\tsymbol = this._addSymbolForTextProxy(textProxy.startOffset, textProxy.endOffset, textProxy.parent);\n\t\t\t}\n\n\t\t\treturn symbol;\n\t\t}\n\n\t\t/**\n   * Adds a symbol for given properties that characterizes a {@link module:engine/model/textproxy~TextProxy} instance.\n   *\n   * Used internally to correctly consume `TextProxy` instances.\n   *\n   * @private\n   * @param {Number} startIndex Text proxy start index in it's parent.\n   * @param {Number} endIndex Text proxy end index in it's parent.\n   * @param {module:engine/model/element~Element} parent Text proxy parent.\n   * @returns {Symbol} Symbol generated for given properties.\n   */\n\n\t}, {\n\t\tkey: '_addSymbolForTextProxy',\n\t\tvalue: function _addSymbolForTextProxy(start, end, parent) {\n\t\t\tvar symbol = Symbol();\n\t\t\tvar startMap = void 0,\n\t\t\t    endMap = void 0;\n\n\t\t\tstartMap = this._textProxyRegistry.get(start);\n\n\t\t\tif (!startMap) {\n\t\t\t\tstartMap = new Map();\n\t\t\t\tthis._textProxyRegistry.set(start, startMap);\n\t\t\t}\n\n\t\t\tendMap = startMap.get(end);\n\n\t\t\tif (!endMap) {\n\t\t\t\tendMap = new Map();\n\t\t\t\tstartMap.set(end, endMap);\n\t\t\t}\n\n\t\t\tendMap.set(parent, symbol);\n\n\t\t\treturn symbol;\n\t\t}\n\t}]);\n\n\treturn ModelConsumable;\n}();\n\nexports.default = ModelConsumable;\n\n/***/ }),\n/* 305 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.convertSelectionChange = convertSelectionChange;\n\nvar _selection = __webpack_require__(72);\n\nvar _selection2 = _interopRequireDefault(_selection);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Function factory, creates a callback function which converts a {@link module:engine/view/selection~Selection view selection} taken\n * from the {@link module:engine/view/document~Document#event:selectionChange} event\n * and sets in on the {@link module:engine/model/document~Document#selection model}.\n *\n * **Note**: because there is no view selection change dispatcher nor any other advanced view selection to model\n * conversion mechanism, the callback should be set directly on view document.\n *\n *\t\tview.document.on( 'selectionChange', convertSelectionChange( modelDocument, mapper ) );\n *\n * @param {module:engine/model/document~Document} modelDocument Model document on which selection should be updated.\n * @param {module:engine/conversion/mapper~Mapper} mapper Conversion mapper.\n * @returns {Function} {@link module:engine/view/document~Document#event:selectionChange} callback function.\n */\nfunction convertSelectionChange(modelDocument, mapper) {\n  return function (evt, data) {\n    var viewSelection = data.newSelection;\n    var modelSelection = new _selection2.default();\n\n    var ranges = [];\n\n    var _iteratorNormalCompletion = true;\n    var _didIteratorError = false;\n    var _iteratorError = undefined;\n\n    try {\n      for (var _iterator = viewSelection.getRanges()[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n        var viewRange = _step.value;\n\n        ranges.push(mapper.toModelRange(viewRange));\n      }\n    } catch (err) {\n      _didIteratorError = true;\n      _iteratorError = err;\n    } finally {\n      try {\n        if (!_iteratorNormalCompletion && _iterator.return) {\n          _iterator.return();\n        }\n      } finally {\n        if (_didIteratorError) {\n          throw _iteratorError;\n        }\n      }\n    }\n\n    modelSelection.setRanges(ranges, viewSelection.isBackward);\n\n    if (!modelSelection.isEqual(modelDocument.selection)) {\n      modelDocument.enqueueChanges(function () {\n        modelDocument.selection.setTo(modelSelection);\n      });\n    }\n  };\n} /**\n   * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n   * For licensing, see LICENSE.md.\n   */\n\n/**\n * Contains {@link module:engine/view/selection~Selection view selection}\n * to {@link module:engine/model/selection~Selection model selection} conversion helpers.\n *\n * @module engine/conversion/view-selection-to-model-converters\n */\n\n/***/ }),\n/* 306 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.convertToModelFragment = convertToModelFragment;\nexports.convertText = convertText;\n\nvar _documentfragment = __webpack_require__(67);\n\nvar _documentfragment2 = _interopRequireDefault(_documentfragment);\n\nvar _text = __webpack_require__(23);\n\nvar _text2 = _interopRequireDefault(_text);\n\nvar _writer = __webpack_require__(28);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Contains {@link module:engine/view/view view} to {@link module:engine/model/model model} converters for\n * {@link module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher}.\n *\n * @module engine/conversion/view-to-model-converters\n */\n\n/**\n * Function factory, creates a converter that converts {@link module:engine/view/documentfragment~DocumentFragment view document fragment}\n * or all children of {@link module:engine/view/element~Element} into\n * {@link module:engine/model/documentfragment~DocumentFragment model document fragment}.\n * This is the \"entry-point\" converter for view to model conversion. This converter starts the conversion of all children\n * of passed view document fragment. Those children {@link module:engine/view/node~Node view nodes} are then handled by other converters.\n *\n * This also a \"default\", last resort converter for all view elements that has not been converted by other converters.\n * When a view element is being converted to the model but it does not have converter specified, that view element\n * will be converted to {@link module:engine/model/documentfragment~DocumentFragment model document fragment} and returned.\n *\n * @returns {Function} Universal converter for view {@link module:engine/view/documentfragment~DocumentFragment fragments} and\n * {@link module:engine/view/element~Element elements} that returns\n * {@link module:engine/model/documentfragment~DocumentFragment model fragment} with children of converted view item.\n */\nfunction convertToModelFragment() {\n  return function (evt, data, consumable, conversionApi) {\n    // Second argument in `consumable.consume` is discarded for ViewDocumentFragment but is needed for ViewElement.\n    if (!data.output && consumable.consume(data.input, { name: true })) {\n      var convertedChildren = conversionApi.convertChildren(data.input, consumable, data);\n\n      data.output = new _documentfragment2.default((0, _writer.normalizeNodes)(convertedChildren));\n    }\n  };\n}\n\n/**\n * Function factory, creates a converter that converts {@link module:engine/view/text~Text} to {@link module:engine/model/text~Text}.\n *\n * @returns {Function} {@link module:engine/view/text~Text View text} converter.\n */\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\nfunction convertText() {\n  return function (evt, data, consumable, conversionApi) {\n    var schemaQuery = {\n      name: '$text',\n      inside: data.context\n    };\n\n    if (conversionApi.schema.check(schemaQuery)) {\n      if (consumable.consume(data.input)) {\n        data.output = new _text2.default(data.input.data);\n      }\n    }\n  };\n}\n\n/***/ }),\n/* 307 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module engine/conversion/viewconsumable\n */\n\nvar _isArray = __webpack_require__(11);\n\nvar _isArray2 = _interopRequireDefault(_isArray);\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _toConsumableArray(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } else { return Array.from(arr); } }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * Class used for handling consumption of view {@link module:engine/view/element~Element elements},\n * {@link module:engine/view/text~Text text nodes} and {@link module:engine/view/documentfragment~DocumentFragment document fragments}.\n * Element's name and its parts (attributes, classes and styles) can be consumed separately. Consuming an element's name\n * does not consume its attributes, classes and styles.\n * To add items for consumption use {@link module:engine/conversion/viewconsumable~ViewConsumable#add add method}.\n * To test items use {@link module:engine/conversion/viewconsumable~ViewConsumable#test test method}.\n * To consume items use {@link module:engine/conversion/viewconsumable~ViewConsumable#consume consume method}.\n * To revert already consumed items use {@link module:engine/conversion/viewconsumable~ViewConsumable#revert revert method}.\n *\n *\t\tviewConsumable.add( element, { name: true } ); // Adds element's name as ready to be consumed.\n *\t\tviewConsumable.add( textNode ); // Adds text node for consumption.\n *\t\tviewConsumable.add( docFragment ); // Adds document fragment for consumption.\n *\t\tviewConsumable.test( element, { name: true }  ); // Tests if element's name can be consumed.\n *\t\tviewConsumable.test( textNode ); // Tests if text node can be consumed.\n *\t\tviewConsumable.test( docFragment ); // Tests if document fragment can be consumed.\n *\t\tviewConsumable.consume( element, { name: true }  ); // Consume element's name.\n *\t\tviewConsumable.consume( textNode ); // Consume text node.\n *\t\tviewConsumable.consume( docFragment ); // Consume document fragment.\n *\t\tviewConsumable.revert( element, { name: true }  ); // Revert already consumed element's name.\n *\t\tviewConsumable.revert( textNode ); // Revert already consumed text node.\n *\t\tviewConsumable.revert( docFragment ); // Revert already consumed document fragment.\n */\nvar ViewConsumable = function () {\n\t/**\n  * Creates new ViewConsumable.\n  */\n\tfunction ViewConsumable() {\n\t\t_classCallCheck(this, ViewConsumable);\n\n\t\t/**\n   * Map of consumable elements. If {@link module:engine/view/element~Element element} is used as a key,\n   * {@link module:engine/conversion/viewconsumable~ViewElementConsumables ViewElementConsumables} instance is stored as value.\n   * For {@link module:engine/view/text~Text text nodes} and {@link module:engine/view/documentfragment~DocumentFragment document fragments}\n   * boolean value is stored as value.\n   *\n   * @protected\n   * @member {Map.<module:engine/conversion/viewconsumable~ViewElementConsumables|Boolean>}\n  */\n\t\tthis._consumables = new Map();\n\t}\n\n\t/**\n  * Adds {@link module:engine/view/element~Element view element}, {@link module:engine/view/text~Text text node} or\n  * {@link module:engine/view/documentfragment~DocumentFragment document fragment} as ready to be consumed.\n  *\n  *\t\tviewConsumable.add( p, { name: true } ); // Adds element's name to consume.\n  *\t\tviewConsumable.add( p, { attribute: 'name' } ); // Adds element's attribute.\n  *\t\tviewConsumable.add( p, { class: 'foobar' } ); // Adds element's class.\n  *\t\tviewConsumable.add( p, { style: 'color' } ); // Adds element's style\n  *\t\tviewConsumable.add( p, { attribute: 'name', style: 'color' } ); // Adds attribute and style.\n  *\t\tviewConsumable.add( p, { class: [ 'baz', 'bar' ] } ); // Multiple consumables can be provided.\n  *\t\tviewConsumable.add( textNode ); // Adds text node to consume.\n  *\t\tviewConsumable.add( docFragment ); // Adds document fragment to consume.\n  *\n  * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `viewconsumable-invalid-attribute` when `class` or `style`\n  * attribute is provided - it should be handled separately by providing actual style/class.\n  *\n  *\t\tviewConsumable.add( p, { attribute: 'style' } ); // This call will throw an exception.\n  *\t\tviewConsumable.add( p, { style: 'color' } ); // This is properly handled style.\n  *\n  * @param {module:engine/view/element~Element|module:engine/view/text~Text|module:engine/view/documentfragment~DocumentFragment} element\n  * @param {Object} [consumables] Used only if first parameter is {@link module:engine/view/element~Element view element} instance.\n  * @param {Boolean} consumables.name If set to true element's name will be included.\n  * @param {String|Array.<String>} consumables.attribute Attribute name or array of attribute names.\n  * @param {String|Array.<String>} consumables.class Class name or array of class names.\n  * @param {String|Array.<String>} consumables.style Style name or array of style names.\n  */\n\n\n\t_createClass(ViewConsumable, [{\n\t\tkey: 'add',\n\t\tvalue: function add(element, consumables) {\n\t\t\tvar elementConsumables = void 0;\n\n\t\t\t// For text nodes and document fragments just mark them as consumable.\n\t\t\tif (element.is('text') || element.is('documentFragment')) {\n\t\t\t\tthis._consumables.set(element, true);\n\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// For elements create new ViewElementConsumables or update already existing one.\n\t\t\tif (!this._consumables.has(element)) {\n\t\t\t\telementConsumables = new ViewElementConsumables();\n\t\t\t\tthis._consumables.set(element, elementConsumables);\n\t\t\t} else {\n\t\t\t\telementConsumables = this._consumables.get(element);\n\t\t\t}\n\n\t\t\telementConsumables.add(consumables);\n\t\t}\n\n\t\t/**\n   * Tests if {@link module:engine/view/element~Element view element}, {@link module:engine/view/text~Text text node} or\n   * {@link module:engine/view/documentfragment~DocumentFragment document fragment} can be consumed.\n   * It returns `true` when all items included in method's call can be consumed. Returns `false` when\n   * first already consumed item is found and `null` when first non-consumable item is found.\n   *\n   *\t\tviewConsumable.test( p, { name: true } ); // Tests element's name.\n   *\t\tviewConsumable.test( p, { attribute: 'name' } ); // Tests attribute.\n   *\t\tviewConsumable.test( p, { class: 'foobar' } ); // Tests class.\n   *\t\tviewConsumable.test( p, { style: 'color' } ); // Tests style.\n   *\t\tviewConsumable.test( p, { attribute: 'name', style: 'color' } ); // Tests attribute and style.\n   *\t\tviewConsumable.test( p, { class: [ 'baz', 'bar' ] } ); // Multiple consumables can be tested.\n   *\t\tviewConsumable.test( textNode ); // Tests text node.\n   *\t\tviewConsumable.test( docFragment ); // Tests document fragment.\n   *\n   * Testing classes and styles as attribute will test if all added classes/styles can be consumed.\n   *\n   *\t\tviewConsumable.test( p, { attribute: 'class' } ); // Tests if all added classes can be consumed.\n   *\t\tviewConsumable.test( p, { attribute: 'style' } ); // Tests if all added styles can be consumed.\n   *\n   * @param {module:engine/view/element~Element|module:engine/view/text~Text|module:engine/view/documentfragment~DocumentFragment} element\n   * @param {Object} [consumables] Used only if first parameter is {@link module:engine/view/element~Element view element} instance.\n   * @param {Boolean} consumables.name If set to true element's name will be included.\n   * @param {String|Array.<String>} consumables.attribute Attribute name or array of attribute names.\n   * @param {String|Array.<String>} consumables.class Class name or array of class names.\n   * @param {String|Array.<String>} consumables.style Style name or array of style names.\n   * @returns {Boolean|null} Returns `true` when all items included in method's call can be consumed. Returns `false`\n   * when first already consumed item is found and `null` when first non-consumable item is found.\n   */\n\n\t}, {\n\t\tkey: 'test',\n\t\tvalue: function test(element, consumables) {\n\t\t\tvar elementConsumables = this._consumables.get(element);\n\n\t\t\tif (elementConsumables === undefined) {\n\t\t\t\treturn null;\n\t\t\t}\n\n\t\t\t// For text nodes and document fragments return stored boolean value.\n\t\t\tif (element.is('text') || element.is('documentFragment')) {\n\t\t\t\treturn elementConsumables;\n\t\t\t}\n\n\t\t\t// For elements test consumables object.\n\t\t\treturn elementConsumables.test(consumables);\n\t\t}\n\n\t\t/**\n   * Consumes {@link module:engine/view/element~Element view element}, {@link module:engine/view/text~Text text node} or\n   * {@link module:engine/view/documentfragment~DocumentFragment document fragment}.\n   * It returns `true` when all items included in method's call can be consumed, otherwise returns `false`.\n   *\n   *\t\tviewConsumable.consume( p, { name: true } ); // Consumes element's name.\n   *\t\tviewConsumable.consume( p, { attribute: 'name' } ); // Consumes element's attribute.\n   *\t\tviewConsumable.consume( p, { class: 'foobar' } ); // Consumes element's class.\n   *\t\tviewConsumable.consume( p, { style: 'color' } ); // Consumes element's style.\n   *\t\tviewConsumable.consume( p, { attribute: 'name', style: 'color' } ); // Consumes attribute and style.\n   *\t\tviewConsumable.consume( p, { class: [ 'baz', 'bar' ] } ); // Multiple consumables can be consumed.\n   *\t\tviewConsumable.consume( textNode ); // Consumes text node.\n   *\t\tviewConsumable.consume( docFragment ); // Consumes document fragment.\n   *\n   * Consuming classes and styles as attribute will test if all added classes/styles can be consumed.\n   *\n   *\t\tviewConsumable.consume( p, { attribute: 'class' } ); // Consume only if all added classes can be consumed.\n   *\t\tviewConsumable.consume( p, { attribute: 'style' } ); // Consume only if all added styles can be consumed.\n   *\n   * @param {module:engine/view/element~Element|module:engine/view/text~Text|module:engine/view/documentfragment~DocumentFragment} element\n   * @param {Object} [consumables] Used only if first parameter is {@link module:engine/view/element~Element view element} instance.\n   * @param {Boolean} consumables.name If set to true element's name will be included.\n   * @param {String|Array.<String>} consumables.attribute Attribute name or array of attribute names.\n   * @param {String|Array.<String>} consumables.class Class name or array of class names.\n   * @param {String|Array.<String>} consumables.style Style name or array of style names.\n   * @returns {Boolean} Returns `true` when all items included in method's call can be consumed,\n   * otherwise returns `false`.\n   */\n\n\t}, {\n\t\tkey: 'consume',\n\t\tvalue: function consume(element, consumables) {\n\t\t\tif (this.test(element, consumables)) {\n\t\t\t\tif (element.is('text') || element.is('documentFragment')) {\n\t\t\t\t\t// For text nodes and document fragments set value to false.\n\t\t\t\t\tthis._consumables.set(element, false);\n\t\t\t\t} else {\n\t\t\t\t\t// For elements - consume consumables object.\n\t\t\t\t\tthis._consumables.get(element).consume(consumables);\n\t\t\t\t}\n\n\t\t\t\treturn true;\n\t\t\t}\n\n\t\t\treturn false;\n\t\t}\n\n\t\t/**\n   * Reverts {@link module:engine/view/element~Element view element}, {@link module:engine/view/text~Text text node} or\n   * {@link module:engine/view/documentfragment~DocumentFragment document fragment} so they can be consumed once again.\n   * Method does not revert items that were never previously added for consumption, even if they are included in\n   * method's call.\n   *\n   *\t\tviewConsumable.revert( p, { name: true } ); // Reverts element's name.\n   *\t\tviewConsumable.revert( p, { attribute: 'name' } ); // Reverts element's attribute.\n   *\t\tviewConsumable.revert( p, { class: 'foobar' } ); // Reverts element's class.\n   *\t\tviewConsumable.revert( p, { style: 'color' } ); // Reverts element's style.\n   *\t\tviewConsumable.revert( p, { attribute: 'name', style: 'color' } ); // Reverts attribute and style.\n   *\t\tviewConsumable.revert( p, { class: [ 'baz', 'bar' ] } ); // Multiple names can be reverted.\n   *\t\tviewConsumable.revert( textNode ); // Reverts text node.\n   *\t\tviewConsumable.revert( docFragment ); // Reverts document fragment.\n   *\n   * Reverting classes and styles as attribute will revert all classes/styles that were previously added for\n   * consumption.\n   *\n   *\t\tviewConsumable.revert( p, { attribute: 'class' } ); // Reverts all classes added for consumption.\n   *\t\tviewConsumable.revert( p, { attribute: 'style' } ); // Reverts all styles added for consumption.\n   *\n   * @param {module:engine/view/element~Element|module:engine/view/text~Text|module:engine/view/documentfragment~DocumentFragment} element\n   * @param {Object} [consumables] Used only if first parameter is {@link module:engine/view/element~Element view element} instance.\n   * @param {Boolean} consumables.name If set to true element's name will be included.\n   * @param {String|Array.<String>} consumables.attribute Attribute name or array of attribute names.\n   * @param {String|Array.<String>} consumables.class Class name or array of class names.\n   * @param {String|Array.<String>} consumables.style Style name or array of style names.\n   */\n\n\t}, {\n\t\tkey: 'revert',\n\t\tvalue: function revert(element, consumables) {\n\t\t\tvar elementConsumables = this._consumables.get(element);\n\n\t\t\tif (elementConsumables !== undefined) {\n\t\t\t\tif (element.is('text') || element.is('documentFragment')) {\n\t\t\t\t\t// For text nodes and document fragments - set consumable to true.\n\t\t\t\t\tthis._consumables.set(element, true);\n\t\t\t\t} else {\n\t\t\t\t\t// For elements - revert items from consumables object.\n\t\t\t\t\telementConsumables.revert(consumables);\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Creates consumable object from {@link module:engine/view/element~Element view element}. Consumable object will include\n   * element's name and all its attributes, classes and styles.\n   *\n   * @static\n   * @param {module:engine/view/element~Element} element\n   * @returns {Object} consumables\n   */\n\n\t}], [{\n\t\tkey: 'consumablesFromElement',\n\t\tvalue: function consumablesFromElement(element) {\n\t\t\tvar consumables = {\n\t\t\t\tname: true,\n\t\t\t\tattribute: [],\n\t\t\t\tclass: [],\n\t\t\t\tstyle: []\n\t\t\t};\n\n\t\t\tvar attributes = element.getAttributeKeys();\n\n\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\tvar _didIteratorError = false;\n\t\t\tvar _iteratorError = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator = attributes[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\tvar attribute = _step.value;\n\n\t\t\t\t\t// Skip classes and styles - will be added separately.\n\t\t\t\t\tif (attribute == 'style' || attribute == 'class') {\n\t\t\t\t\t\tcontinue;\n\t\t\t\t\t}\n\n\t\t\t\t\tconsumables.attribute.push(attribute);\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError = true;\n\t\t\t\t_iteratorError = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tvar classes = element.getClassNames();\n\n\t\t\tvar _iteratorNormalCompletion2 = true;\n\t\t\tvar _didIteratorError2 = false;\n\t\t\tvar _iteratorError2 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator2 = classes[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {\n\t\t\t\t\tvar className = _step2.value;\n\n\t\t\t\t\tconsumables.class.push(className);\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError2 = true;\n\t\t\t\t_iteratorError2 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion2 && _iterator2.return) {\n\t\t\t\t\t\t_iterator2.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError2) {\n\t\t\t\t\t\tthrow _iteratorError2;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tvar styles = element.getStyleNames();\n\n\t\t\tvar _iteratorNormalCompletion3 = true;\n\t\t\tvar _didIteratorError3 = false;\n\t\t\tvar _iteratorError3 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator3 = styles[Symbol.iterator](), _step3; !(_iteratorNormalCompletion3 = (_step3 = _iterator3.next()).done); _iteratorNormalCompletion3 = true) {\n\t\t\t\t\tvar style = _step3.value;\n\n\t\t\t\t\tconsumables.style.push(style);\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError3 = true;\n\t\t\t\t_iteratorError3 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion3 && _iterator3.return) {\n\t\t\t\t\t\t_iterator3.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError3) {\n\t\t\t\t\t\tthrow _iteratorError3;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn consumables;\n\t\t}\n\n\t\t/**\n   * Creates {@link module:engine/conversion/viewconsumable~ViewConsumable ViewConsumable} instance from\n   * {@link module:engine/view/node~Node node} or {@link module:engine/view/documentfragment~DocumentFragment document fragment}.\n   * Instance will contain all elements, child nodes, attributes, styles and classes added for consumption.\n   *\n   * @static\n   * @param {module:engine/view/node~Node|module:engine/view/documentfragment~DocumentFragment} from View node or document fragment\n   * from which `ViewConsumable` will be created.\n   * @param {module:engine/conversion/viewconsumable~ViewConsumable} [instance] If provided, given `ViewConsumable` instance will be used\n   * to add all consumables. It will be returned instead of a new instance.\n   */\n\n\t}, {\n\t\tkey: 'createFrom',\n\t\tvalue: function createFrom(from, instance) {\n\t\t\tif (!instance) {\n\t\t\t\tinstance = new ViewConsumable();\n\t\t\t}\n\n\t\t\tif (from.is('text')) {\n\t\t\t\tinstance.add(from);\n\n\t\t\t\treturn instance;\n\t\t\t}\n\n\t\t\t// Add `from` itself, if it is an element.\n\t\t\tif (from.is('element')) {\n\t\t\t\tinstance.add(from, ViewConsumable.consumablesFromElement(from));\n\t\t\t}\n\n\t\t\tif (from.is('documentFragment')) {\n\t\t\t\tinstance.add(from);\n\t\t\t}\n\n\t\t\tvar _iteratorNormalCompletion4 = true;\n\t\t\tvar _didIteratorError4 = false;\n\t\t\tvar _iteratorError4 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator4 = from.getChildren()[Symbol.iterator](), _step4; !(_iteratorNormalCompletion4 = (_step4 = _iterator4.next()).done); _iteratorNormalCompletion4 = true) {\n\t\t\t\t\tvar child = _step4.value;\n\n\t\t\t\t\tinstance = ViewConsumable.createFrom(child, instance);\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError4 = true;\n\t\t\t\t_iteratorError4 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion4 && _iterator4.return) {\n\t\t\t\t\t\t_iterator4.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError4) {\n\t\t\t\t\t\tthrow _iteratorError4;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn instance;\n\t\t}\n\t}]);\n\n\treturn ViewConsumable;\n}();\n\n/**\n * This is a private helper-class for {@link module:engine/conversion/viewconsumable~ViewConsumable}.\n * It represents and manipulates consumable parts of a single {@link module:engine/view/element~Element}.\n *\n * @private\n */\n\n\nexports.default = ViewConsumable;\n\nvar ViewElementConsumables = function () {\n\n\t/**\n  * Creates ViewElementConsumables instance.\n  */\n\tfunction ViewElementConsumables() {\n\t\t_classCallCheck(this, ViewElementConsumables);\n\n\t\t/**\n   * Flag indicating if name of the element can be consumed.\n   *\n   * @private\n   * @member {Boolean}\n   */\n\t\tthis._canConsumeName = null;\n\n\t\t/**\n   * Contains maps of element's consumables: attributes, classes and styles.\n   *\n   * @private\n   * @member {Object}\n   */\n\t\tthis._consumables = {\n\t\t\tattribute: new Map(),\n\t\t\tstyle: new Map(),\n\t\t\tclass: new Map()\n\t\t};\n\t}\n\n\t/**\n  * Adds consumable parts of the {@link module:engine/view/element~Element view element}.\n  * Element's name itself can be marked to be consumed (when element's name is consumed its attributes, classes and\n  * styles still could be consumed):\n  *\n  *\t\tconsumables.add( { name: true } );\n  *\n  * Attributes classes and styles:\n  *\n  *\t\tconsumables.add( { attribute: 'title', class: 'foo', style: 'color' } );\n  *\t\tconsumables.add( { attribute: [ 'title', 'name' ], class: [ 'foo', 'bar' ] );\n  *\n  * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `viewconsumable-invalid-attribute` when `class` or `style`\n  * attribute is provided - it should be handled separately by providing `style` and `class` in consumables object.\n  *\n  * @param {Object} consumables Object describing which parts of the element can be consumed.\n  * @param {Boolean} consumables.name If set to `true` element's name will be added as consumable.\n  * @param {String|Array.<String>} consumables.attribute Attribute name or array of attribute names to add as consumable.\n  * @param {String|Array.<String>} consumables.class Class name or array of class names to add as consumable.\n  * @param {String|Array.<String>} consumables.style Style name or array of style names to add as consumable.\n  */\n\n\n\t_createClass(ViewElementConsumables, [{\n\t\tkey: 'add',\n\t\tvalue: function add(consumables) {\n\t\t\tif (consumables.name) {\n\t\t\t\tthis._canConsumeName = true;\n\t\t\t}\n\n\t\t\tfor (var type in this._consumables) {\n\t\t\t\tif (type in consumables) {\n\t\t\t\t\tthis._add(type, consumables[type]);\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Tests if parts of the {@link module:engine/view/node~Node view node} can be consumed.\n   *\n   * Element's name can be tested:\n   *\n   *\t\tconsumables.test( { name: true } );\n   *\n   * Attributes classes and styles:\n   *\n   *\t\tconsumables.test( { attribute: 'title', class: 'foo', style: 'color' } );\n   *\t\tconsumables.test( { attribute: [ 'title', 'name' ], class: [ 'foo', 'bar' ] );\n   *\n   * @param {Object} consumables Object describing which parts of the element should be tested.\n   * @param {Boolean} consumables.name If set to `true` element's name will be tested.\n   * @param {String|Array.<String>} consumables.attribute Attribute name or array of attribute names to test.\n   * @param {String|Array.<String>} consumables.class Class name or array of class names to test.\n   * @param {String|Array.<String>} consumables.style Style name or array of style names to test.\n   * @returns {Boolean|null} `true` when all tested items can be consumed, `null` when even one of the items\n   * was never marked for consumption and `false` when even one of the items was already consumed.\n   */\n\n\t}, {\n\t\tkey: 'test',\n\t\tvalue: function test(consumables) {\n\t\t\t// Check if name can be consumed.\n\t\t\tif (consumables.name && !this._canConsumeName) {\n\t\t\t\treturn this._canConsumeName;\n\t\t\t}\n\n\t\t\tfor (var type in this._consumables) {\n\t\t\t\tif (type in consumables) {\n\t\t\t\t\tvar value = this._test(type, consumables[type]);\n\n\t\t\t\t\tif (value !== true) {\n\t\t\t\t\t\treturn value;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Return true only if all can be consumed.\n\t\t\treturn true;\n\t\t}\n\n\t\t/**\n   * Consumes parts of {@link module:engine/view/element~Element view element}. This function does not check if consumable item\n   * is already consumed - it consumes all consumable items provided.\n   * Element's name can be consumed:\n   *\n   *\t\tconsumables.consume( { name: true } );\n   *\n   * Attributes classes and styles:\n   *\n   *\t\tconsumables.consume( { attribute: 'title', class: 'foo', style: 'color' } );\n   *\t\tconsumables.consume( { attribute: [ 'title', 'name' ], class: [ 'foo', 'bar' ] );\n   *\n   * @param {Object} consumables Object describing which parts of the element should be consumed.\n   * @param {Boolean} consumables.name If set to `true` element's name will be consumed.\n   * @param {String|Array.<String>} consumables.attribute Attribute name or array of attribute names to consume.\n   * @param {String|Array.<String>} consumables.class Class name or array of class names to consume.\n   * @param {String|Array.<String>} consumables.style Style name or array of style names to consume.\n   */\n\n\t}, {\n\t\tkey: 'consume',\n\t\tvalue: function consume(consumables) {\n\t\t\tif (consumables.name) {\n\t\t\t\tthis._canConsumeName = false;\n\t\t\t}\n\n\t\t\tfor (var type in this._consumables) {\n\t\t\t\tif (type in consumables) {\n\t\t\t\t\tthis._consume(type, consumables[type]);\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Revert already consumed parts of {@link module:engine/view/element~Element view Element}, so they can be consumed once again.\n   * Element's name can be reverted:\n   *\n   *\t\tconsumables.revert( { name: true } );\n   *\n   * Attributes classes and styles:\n   *\n   *\t\tconsumables.revert( { attribute: 'title', class: 'foo', style: 'color' } );\n   *\t\tconsumables.revert( { attribute: [ 'title', 'name' ], class: [ 'foo', 'bar' ] );\n   *\n   * @param {Object} consumables Object describing which parts of the element should be reverted.\n   * @param {Boolean} consumables.name If set to `true` element's name will be reverted.\n   * @param {String|Array.<String>} consumables.attribute Attribute name or array of attribute names to revert.\n   * @param {String|Array.<String>} consumables.class Class name or array of class names to revert.\n   * @param {String|Array.<String>} consumables.style Style name or array of style names to revert.\n   */\n\n\t}, {\n\t\tkey: 'revert',\n\t\tvalue: function revert(consumables) {\n\t\t\tif (consumables.name) {\n\t\t\t\tthis._canConsumeName = true;\n\t\t\t}\n\n\t\t\tfor (var type in this._consumables) {\n\t\t\t\tif (type in consumables) {\n\t\t\t\t\tthis._revert(type, consumables[type]);\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Helper method that adds consumables of a given type: attribute, class or style.\n   *\n   * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `viewconsumable-invalid-attribute` when `class` or `style`\n   * type is provided - it should be handled separately by providing actual style/class type.\n   *\n   * @private\n   * @param {String} type Type of the consumable item: `attribute`, `class` or `style`.\n   * @param {String|Array.<String>} item Consumable item or array of items.\n   */\n\n\t}, {\n\t\tkey: '_add',\n\t\tvalue: function _add(type, item) {\n\t\t\tvar items = (0, _isArray2.default)(item) ? item : [item];\n\t\t\tvar consumables = this._consumables[type];\n\n\t\t\tvar _iteratorNormalCompletion5 = true;\n\t\t\tvar _didIteratorError5 = false;\n\t\t\tvar _iteratorError5 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator5 = items[Symbol.iterator](), _step5; !(_iteratorNormalCompletion5 = (_step5 = _iterator5.next()).done); _iteratorNormalCompletion5 = true) {\n\t\t\t\t\tvar name = _step5.value;\n\n\t\t\t\t\tif (type === 'attribute' && (name === 'class' || name === 'style')) {\n\t\t\t\t\t\t/**\n       * Class and style attributes should be handled separately.\n       *\n       * @error viewconsumable-invalid-attribute\n       */\n\t\t\t\t\t\tthrow new _ckeditorerror2.default('viewconsumable-invalid-attribute: Classes and styles should be handled separately.');\n\t\t\t\t\t}\n\n\t\t\t\t\tconsumables.set(name, true);\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError5 = true;\n\t\t\t\t_iteratorError5 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion5 && _iterator5.return) {\n\t\t\t\t\t\t_iterator5.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError5) {\n\t\t\t\t\t\tthrow _iteratorError5;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Helper method that tests consumables of a given type: attribute, class or style.\n   *\n   * @private\n   * @param {String} type Type of the consumable item: `attribute`, `class` or `style`.\n   * @param {String|Array.<String>} item Consumable item or array of items.\n   * @returns {Boolean|null} Returns `true` if all items can be consumed, `null` when one of the items cannot be\n   * consumed and `false` when one of the items is already consumed.\n   */\n\n\t}, {\n\t\tkey: '_test',\n\t\tvalue: function _test(type, item) {\n\t\t\tvar items = (0, _isArray2.default)(item) ? item : [item];\n\t\t\tvar consumables = this._consumables[type];\n\n\t\t\tvar _iteratorNormalCompletion6 = true;\n\t\t\tvar _didIteratorError6 = false;\n\t\t\tvar _iteratorError6 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator6 = items[Symbol.iterator](), _step6; !(_iteratorNormalCompletion6 = (_step6 = _iterator6.next()).done); _iteratorNormalCompletion6 = true) {\n\t\t\t\t\tvar name = _step6.value;\n\n\t\t\t\t\tif (type === 'attribute' && (name === 'class' || name === 'style')) {\n\t\t\t\t\t\t// Check all classes/styles if class/style attribute is tested.\n\t\t\t\t\t\tvar value = this._test(name, [].concat(_toConsumableArray(this._consumables[name].keys())));\n\n\t\t\t\t\t\tif (value !== true) {\n\t\t\t\t\t\t\treturn value;\n\t\t\t\t\t\t}\n\t\t\t\t\t} else {\n\t\t\t\t\t\tvar _value = consumables.get(name);\n\t\t\t\t\t\t// Return null if attribute is not found.\n\t\t\t\t\t\tif (_value === undefined) {\n\t\t\t\t\t\t\treturn null;\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\tif (!_value) {\n\t\t\t\t\t\t\treturn false;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError6 = true;\n\t\t\t\t_iteratorError6 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion6 && _iterator6.return) {\n\t\t\t\t\t\t_iterator6.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError6) {\n\t\t\t\t\t\tthrow _iteratorError6;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn true;\n\t\t}\n\n\t\t/**\n   * Helper method that consumes items of a given type: attribute, class or style.\n   *\n   * @private\n   * @param {String} type Type of the consumable item: `attribute`, `class` or `style`.\n   * @param {String|Array.<String>} item Consumable item or array of items.\n   */\n\n\t}, {\n\t\tkey: '_consume',\n\t\tvalue: function _consume(type, item) {\n\t\t\tvar items = (0, _isArray2.default)(item) ? item : [item];\n\t\t\tvar consumables = this._consumables[type];\n\n\t\t\tvar _iteratorNormalCompletion7 = true;\n\t\t\tvar _didIteratorError7 = false;\n\t\t\tvar _iteratorError7 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator7 = items[Symbol.iterator](), _step7; !(_iteratorNormalCompletion7 = (_step7 = _iterator7.next()).done); _iteratorNormalCompletion7 = true) {\n\t\t\t\t\tvar name = _step7.value;\n\n\t\t\t\t\tif (type === 'attribute' && (name === 'class' || name === 'style')) {\n\t\t\t\t\t\t// If class or style is provided for consumption - consume them all.\n\t\t\t\t\t\tthis._consume(name, [].concat(_toConsumableArray(this._consumables[name].keys())));\n\t\t\t\t\t} else {\n\t\t\t\t\t\tconsumables.set(name, false);\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError7 = true;\n\t\t\t\t_iteratorError7 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion7 && _iterator7.return) {\n\t\t\t\t\t\t_iterator7.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError7) {\n\t\t\t\t\t\tthrow _iteratorError7;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Helper method that reverts items of a given type: attribute, class or style.\n   *\n   * @private\n   * @param {String} type Type of the consumable item: `attribute`, `class` or , `style`.\n   * @param {String|Array.<String>} item Consumable item or array of items.\n   */\n\n\t}, {\n\t\tkey: '_revert',\n\t\tvalue: function _revert(type, item) {\n\t\t\tvar items = (0, _isArray2.default)(item) ? item : [item];\n\t\t\tvar consumables = this._consumables[type];\n\n\t\t\tvar _iteratorNormalCompletion8 = true;\n\t\t\tvar _didIteratorError8 = false;\n\t\t\tvar _iteratorError8 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator8 = items[Symbol.iterator](), _step8; !(_iteratorNormalCompletion8 = (_step8 = _iterator8.next()).done); _iteratorNormalCompletion8 = true) {\n\t\t\t\t\tvar name = _step8.value;\n\n\t\t\t\t\tif (type === 'attribute' && (name === 'class' || name === 'style')) {\n\t\t\t\t\t\t// If class or style is provided for reverting - revert them all.\n\t\t\t\t\t\tthis._revert(name, [].concat(_toConsumableArray(this._consumables[name].keys())));\n\t\t\t\t\t} else {\n\t\t\t\t\t\tvar value = consumables.get(name);\n\n\t\t\t\t\t\tif (value === false) {\n\t\t\t\t\t\t\tconsumables.set(name, true);\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError8 = true;\n\t\t\t\t_iteratorError8 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion8 && _iterator8.return) {\n\t\t\t\t\t\t_iterator8.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError8) {\n\t\t\t\t\t\tthrow _iteratorError8;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}]);\n\n\treturn ViewElementConsumables;\n}();\n\n/***/ }),\n/* 308 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module engine/conversion/viewconversiondispatcher\n */\n\nvar _viewconsumable = __webpack_require__(307);\n\nvar _viewconsumable2 = _interopRequireDefault(_viewconsumable);\n\nvar _emittermixin = __webpack_require__(8);\n\nvar _emittermixin2 = _interopRequireDefault(_emittermixin);\n\nvar _mix = __webpack_require__(4);\n\nvar _mix2 = _interopRequireDefault(_mix);\n\nvar _extend = __webpack_require__(53);\n\nvar _extend2 = _interopRequireDefault(_extend);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * `ViewConversionDispatcher` is a central point of {@link module:engine/view/view view} conversion, which is a process of\n * converting given {@link module:engine/view/documentfragment~DocumentFragment view document fragment} or\n * {@link module:engine/view/element~Element}\n * into another structure. In default application, {@link module:engine/view/view view} is converted to {@link module:engine/model/model}.\n *\n * During conversion process, for all {@link module:engine/view/node~Node view nodes} from the converted view document fragment,\n * `ViewConversionDispatcher` fires corresponding events. Special callbacks called \"converters\" should listen to\n * `ViewConversionDispatcher` for those events.\n *\n * Each callback, as a first argument, is passed a special object `data` that has `input` and `output` properties.\n * `input` property contains {@link module:engine/view/node~Node view node} or\n * {@link module:engine/view/documentfragment~DocumentFragment view document fragment}\n * that is converted at the moment and might be handled by the callback. `output` property should be used to save the result\n * of conversion. Keep in mind that the `data` parameter is customizable and may contain other values - see\n * {@link ~ViewConversionDispatcher#convert}. It is also shared by reference by all callbacks\n * listening to given event. **Note**: in view to model conversion - `data` contains `context` property that is an array\n * of {@link module:engine/model/element~Element model elements}. These are model elements that will be the parent of currently\n * converted view item. `context` property is used in examples below.\n *\n * The second parameter passed to a callback is an instance of {@link module:engine/conversion/viewconsumable~ViewConsumable}. It stores\n * information about what parts of processed view item are still waiting to be handled. After a piece of view item\n * was converted, appropriate consumable value should be {@link module:engine/conversion/viewconsumable~ViewConsumable#consume consumed}.\n *\n * The third parameter passed to a callback is an instance of {@link ~ViewConversionDispatcher}\n * which provides additional tools for converters.\n *\n * Examples of providing callbacks for `ViewConversionDispatcher`:\n *\n *\t\t// Converter for paragraphs (<p>).\n *\t\tviewDispatcher.on( 'element:p', ( evt, data, consumable, conversionApi ) => {\n *\t\t\tconst paragraph = new ModelElement( 'paragraph' );\n *\t\t\tconst schemaQuery = {\n *\t\t\t\tname: 'paragraph',\n *\t\t\t\tinside: data.context\n *\t\t\t};\n *\n *\t\t\tif ( conversionApi.schema.check( schemaQuery ) ) {\n *\t\t\t\tif ( !consumable.consume( data.input, { name: true } ) ) {\n *\t\t\t\t\t// Before converting this paragraph's children we have to update their context by this paragraph.\n *\t\t\t\t\tdata.context.push( paragraph );\n *\t\t\t\t\tconst children = conversionApi.convertChildren( data.input, consumable, data );\n *\t\t\t\t\tdata.context.pop();\n *\t\t\t\t\tparagraph.appendChildren( children );\n *\t\t\t\t\tdata.output = paragraph;\n *\t\t\t\t}\n *\t\t\t}\n *\t\t} );\n *\n *\t\t// Converter for links (<a>).\n *\t\tviewDispatcher.on( 'element:a', ( evt, data, consumable, conversionApi ) => {\n *\t\t\tif ( consumable.consume( data.input, { name: true, attributes: [ 'href' ] } ) ) {\n *\t\t\t\t// <a> element is inline and is represented by an attribute in the model.\n *\t\t\t\t// This is why we are not updating `context` property.\n *\t\t\t\tdata.output = conversionApi.convertChildren( data.input, consumable, data );\n *\n *\t\t\t\tfor ( let item of Range.createFrom( data.output ) ) {\n *\t\t\t\t\tconst schemaQuery = {\n *\t\t\t\t\t\tname: item.name || '$text',\n *\t\t\t\t\t\tattribute: 'link',\n *\t\t\t\t\t\tinside: data.context\n *\t\t\t\t\t};\n *\n *\t\t\t\t\tif ( conversionApi.schema.check( schemaQuery ) ) {\n *\t\t\t\t\t\titem.setAttribute( 'link', data.input.getAttribute( 'href' ) );\n *\t\t\t\t\t}\n *\t\t\t\t}\n *\t\t\t}\n *\t\t} );\n *\n *\t\t// Fire conversion.\n *\t\t// Always take care where the converted model structure will be appended to. If this `viewDocumentFragment`\n *\t\t// is going to be appended directly to a '$root' element, use that in `context`.\n *\t\tviewDispatcher.convert( viewDocumentFragment, { context: [ '$root' ] } );\n *\n * Before each conversion process, `ViewConversionDispatcher` fires {@link ~ViewConversionDispatcher#event:viewCleanup}\n * event which can be used to prepare tree view for conversion.\n *\n * @mixes module:utils/emittermixin~EmitterMixin\n * @fires viewCleanup\n * @fires element\n * @fires text\n * @fires documentFragment\n */\nvar ViewConversionDispatcher = function () {\n  /**\n   * Creates a `ViewConversionDispatcher` that operates using passed API.\n   *\n   * @see module:engine/conversion/viewconversiondispatcher~ViewConversionApi\n   * @param {Object} [conversionApi] Additional properties for interface that will be passed to events fired\n   * by `ViewConversionDispatcher`.\n   */\n  function ViewConversionDispatcher() {\n    var conversionApi = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n\n    _classCallCheck(this, ViewConversionDispatcher);\n\n    /**\n     * Interface passed by dispatcher to the events callbacks.\n     *\n     * @member {module:engine/conversion/viewconversiondispatcher~ViewConversionApi}\n     */\n    this.conversionApi = (0, _extend2.default)({}, conversionApi);\n\n    // `convertItem` and `convertChildren` are bound to this `ViewConversionDispatcher` instance and\n    // set on `conversionApi`. This way only a part of `ViewConversionDispatcher` API is exposed.\n    this.conversionApi.convertItem = this._convertItem.bind(this);\n    this.conversionApi.convertChildren = this._convertChildren.bind(this);\n  }\n\n  /**\n   * Starts the conversion process. The entry point for the conversion.\n   *\n   * @fires element\n   * @fires text\n   * @fires documentFragment\n   * @param {module:engine/view/documentfragment~DocumentFragment|module:engine/view/element~Element}\n   * viewItem Part of the view to be converted.\n   * @param {Object} [additionalData] Additional data to be passed in `data` argument when firing `ViewConversionDispatcher`\n   * events. See also {@link ~ViewConversionDispatcher#event:element element event}.\n   * @returns {module:engine/model/documentfragment~DocumentFragment} Model document fragment that is a result of the conversion process.\n   */\n\n\n  _createClass(ViewConversionDispatcher, [{\n    key: 'convert',\n    value: function convert(viewItem) {\n      var additionalData = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n\n      this.fire('viewCleanup', viewItem);\n\n      var consumable = _viewconsumable2.default.createFrom(viewItem);\n\n      return this._convertItem(viewItem, consumable, additionalData);\n    }\n\n    /**\n     * @private\n     * @see module:engine/conversion/viewconversiondispatcher~ViewConversionApi#convertItem\n     */\n\n  }, {\n    key: '_convertItem',\n    value: function _convertItem(input, consumable) {\n      var additionalData = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};\n\n      var data = (0, _extend2.default)({}, additionalData, {\n        input: input,\n        output: null\n      });\n\n      if (input.is('element')) {\n        this.fire('element:' + input.name, data, consumable, this.conversionApi);\n      } else if (input.is('text')) {\n        this.fire('text', data, consumable, this.conversionApi);\n      } else {\n        this.fire('documentFragment', data, consumable, this.conversionApi);\n      }\n\n      return data.output;\n    }\n\n    /**\n     * @private\n     * @see module:engine/conversion/viewconversiondispatcher~ViewConversionApi#convertChildren\n     */\n\n  }, {\n    key: '_convertChildren',\n    value: function _convertChildren(input, consumable) {\n      var _this = this;\n\n      var additionalData = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};\n\n      var viewChildren = Array.from(input.getChildren());\n      var convertedChildren = viewChildren.map(function (viewChild) {\n        return _this._convertItem(viewChild, consumable, additionalData);\n      });\n\n      // Flatten and remove nulls.\n      return convertedChildren.reduce(function (a, b) {\n        return b ? a.concat(b) : a;\n      }, []);\n    }\n\n    /**\n     * Fired before the first conversion event, at the beginning of view to model conversion process.\n     *\n     * @event viewCleanup\n     * @param {module:engine/view/documentfragment~DocumentFragment|module:engine/view/element~Element}\n     * viewItem Part of the view to be converted.\n     */\n\n    /**\n     * Fired when {@link module:engine/view/element~Element} is converted.\n     *\n     * `element` is a namespace event for a class of events. Names of actually called events follow this pattern:\n     * `element:<elementName>` where `elementName` is the name of converted element. This way listeners may listen to\n     * all elements conversion or to conversion of specific elements.\n     *\n     * @event element\n     * @param {Object} data Object containing conversion input and a placeholder for conversion output and possibly other\n     * values (see {@link #convert}).\n     * Keep in mind that this object is shared by reference between all callbacks that will be called.\n     * This means that callbacks can add their own values if needed,\n     * and those values will be available in other callbacks.\n     * @param {module:engine/view/element~Element} data.input Converted element.\n     * @param {*} data.output The current state of conversion result. Every change to converted element should\n     * be reflected by setting or modifying this property.\n     * @param {module:engine/model/schema~SchemaPath} data.context The conversion context.\n     * @param {module:engine/conversion/viewconsumable~ViewConsumable} consumable Values to consume.\n     * @param {Object} conversionApi Conversion interface to be used by callback, passed in `ViewConversionDispatcher` constructor.\n     * Besides of properties passed in constructor, it also has `convertItem` and `convertChildren` methods which are references\n     * to {@link #_convertItem} and\n     * {@link ~ViewConversionDispatcher#_convertChildren}. Those methods are needed to convert\n     * the whole view-tree they were exposed in `conversionApi` for callbacks.\n     */\n\n    /**\n     * Fired when {@link module:engine/view/text~Text} is converted.\n     *\n     * @event text\n     * @see #event:element\n     */\n\n    /**\n     * Fired when {@link module:engine/view/documentfragment~DocumentFragment} is converted.\n     *\n     * @event documentFragment\n     * @see #event:element\n     */\n\n  }]);\n\n  return ViewConversionDispatcher;\n}();\n\nexports.default = ViewConversionDispatcher;\n\n\n(0, _mix2.default)(ViewConversionDispatcher, _emittermixin2.default);\n\n/**\n * Conversion interface that is registered for given {@link module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher}\n * and is passed as one of parameters when {@link module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher dispatcher}\n * fires it's events.\n *\n * `ViewConversionApi` object is built by {@link module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher} constructor.\n * The exact list of properties of this object is determined by the object passed to the constructor.\n *\n * @interface ViewConversionApi\n */\n\n/**\n * Starts conversion of given item by firing an appropriate event.\n *\n * Every fired event is passed (as first parameter) an object with `output` property. Every event may set and/or\n * modify that property. When all callbacks are done, the final value of `output` property is returned by this method.\n *\n * @method #convertItem\n * @fires module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher#event:element\n * @fires module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher#event:text\n * @fires module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher#event:documentFragment\n * @param {module:engine/view/documentfragment~DocumentFragment|module:engine/view/element~Element|module:engine/view/text~Text}\n * input Item to convert.\n * @param {module:engine/conversion/viewconsumable~ViewConsumable} consumable Values to consume.\n * @param {Object} [additionalData] Additional data to be passed in `data` argument when firing `ViewConversionDispatcher`\n * events. See also {@link module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher#event:element element event}.\n * @returns {*} The result of item conversion, created and modified by callbacks attached to fired event.\n */\n\n/**\n * Starts conversion of all children of given item by firing appropriate events for all those children.\n *\n * @method #convertChildren\n * @fires module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher#event:element\n * @fires module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher#event:text\n * @fires module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher#event:documentFragment\n * @param {module:engine/view/documentfragment~DocumentFragment|module:engine/view/element~Element}\n * input Item which children will be converted.\n * @param {module:engine/conversion/viewconsumable~ViewConsumable} consumable Values to consume.\n * @param {Object} [additionalData] Additional data to be passed in `data` argument when firing `ViewConversionDispatcher`\n * events. See also {@link module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher#event:element element event}.\n * @returns {Array.<*>} Array containing results of conversion of all children of given item.\n */\n\n/***/ }),\n/* 309 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/dataprocessor/basichtmlwriter\n */\n\n/* globals document */\n\n/**\n * Basic HTML writer, it uses the native `innerHTML` property for basic conversion\n * from DocumentFragment to an HTML string.\n *\n * @implements module:engine/dataprocessor/htmlwriter~HtmlWriter\n */\nvar BasicHtmlWriter = function () {\n\tfunction BasicHtmlWriter() {\n\t\t_classCallCheck(this, BasicHtmlWriter);\n\t}\n\n\t_createClass(BasicHtmlWriter, [{\n\t\tkey: 'getHtml',\n\n\t\t/**\n   * Returns HTML string created from DocumentFragment.\n   *\n   * @param {DocumentFragment} fragment\n   * @returns {String}\n   */\n\t\tvalue: function getHtml(fragment) {\n\t\t\tvar doc = document.implementation.createHTMLDocument('');\n\t\t\tvar container = doc.createElement('div');\n\t\t\tcontainer.appendChild(fragment);\n\n\t\t\treturn container.innerHTML;\n\t\t}\n\t}]);\n\n\treturn BasicHtmlWriter;\n}();\n\nexports.default = BasicHtmlWriter;\n\n/***/ }),\n/* 310 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nvar _attributedelta = __webpack_require__(162);\n\nvar _attributedelta2 = _interopRequireDefault(_attributedelta);\n\nvar _insertdelta = __webpack_require__(102);\n\nvar _insertdelta2 = _interopRequireDefault(_insertdelta);\n\nvar _mergedelta = __webpack_require__(103);\n\nvar _mergedelta2 = _interopRequireDefault(_mergedelta);\n\nvar _movedelta = __webpack_require__(104);\n\nvar _movedelta2 = _interopRequireDefault(_movedelta);\n\nvar _removedelta = __webpack_require__(105);\n\nvar _removedelta2 = _interopRequireDefault(_removedelta);\n\nvar _renamedelta = __webpack_require__(163);\n\nvar _renamedelta2 = _interopRequireDefault(_renamedelta);\n\nvar _splitdelta = __webpack_require__(106);\n\nvar _splitdelta2 = _interopRequireDefault(_splitdelta);\n\nvar _unwrapdelta = __webpack_require__(108);\n\nvar _unwrapdelta2 = _interopRequireDefault(_unwrapdelta);\n\nvar _weakinsertdelta = __webpack_require__(164);\n\nvar _weakinsertdelta2 = _interopRequireDefault(_weakinsertdelta);\n\nvar _wrapdelta = __webpack_require__(109);\n\nvar _wrapdelta2 = _interopRequireDefault(_wrapdelta);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/***/ }),\n/* 311 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nvar _transform = __webpack_require__(107);\n\nvar _range = __webpack_require__(3);\n\nvar _range2 = _interopRequireDefault(_range);\n\nvar _position = __webpack_require__(1);\n\nvar _position2 = _interopRequireDefault(_position);\n\nvar _nooperation = __webpack_require__(71);\n\nvar _nooperation2 = _interopRequireDefault(_nooperation);\n\nvar _attributeoperation = __webpack_require__(70);\n\nvar _attributeoperation2 = _interopRequireDefault(_attributeoperation);\n\nvar _insertoperation = __webpack_require__(36);\n\nvar _insertoperation2 = _interopRequireDefault(_insertoperation);\n\nvar _reinsertoperation = __webpack_require__(112);\n\nvar _reinsertoperation2 = _interopRequireDefault(_reinsertoperation);\n\nvar _delta2 = __webpack_require__(19);\n\nvar _delta3 = _interopRequireDefault(_delta2);\n\nvar _attributedelta = __webpack_require__(162);\n\nvar _attributedelta2 = _interopRequireDefault(_attributedelta);\n\nvar _insertdelta = __webpack_require__(102);\n\nvar _insertdelta2 = _interopRequireDefault(_insertdelta);\n\nvar _markerdelta = __webpack_require__(312);\n\nvar _markerdelta2 = _interopRequireDefault(_markerdelta);\n\nvar _mergedelta = __webpack_require__(103);\n\nvar _mergedelta2 = _interopRequireDefault(_mergedelta);\n\nvar _movedelta = __webpack_require__(104);\n\nvar _movedelta2 = _interopRequireDefault(_movedelta);\n\nvar _splitdelta = __webpack_require__(106);\n\nvar _splitdelta2 = _interopRequireDefault(_splitdelta);\n\nvar _weakinsertdelta = __webpack_require__(164);\n\nvar _weakinsertdelta2 = _interopRequireDefault(_weakinsertdelta);\n\nvar _wrapdelta = __webpack_require__(109);\n\nvar _wrapdelta2 = _interopRequireDefault(_wrapdelta);\n\nvar _unwrapdelta = __webpack_require__(108);\n\nvar _unwrapdelta2 = _interopRequireDefault(_unwrapdelta);\n\nvar _renamedelta = __webpack_require__(163);\n\nvar _renamedelta2 = _interopRequireDefault(_renamedelta);\n\nvar _removedelta = __webpack_require__(105);\n\nvar _removedelta2 = _interopRequireDefault(_removedelta);\n\nvar _comparearrays = __webpack_require__(48);\n\nvar _comparearrays2 = _interopRequireDefault(_comparearrays);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n// Provide transformations for default deltas.\n\n// Add special case for AttributeDelta x WeakInsertDelta transformation.\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/delta/basic-transformations\n */\n\n(0, _transform.addTransformationCase)(_attributedelta2.default, _weakinsertdelta2.default, function (a, b, isStrong) {\n\t// If nodes are weak-inserted into attribute delta range, we need to apply changes from attribute delta on them.\n\t// So first we do the normal transformation and if this special cases happens, we will add an extra delta.\n\tvar deltas = (0, _transform.defaultTransform)(a, b, isStrong);\n\n\tif (a.range.containsPosition(b.position)) {\n\t\tdeltas.push(_getComplementaryAttrDelta(b, a));\n\t}\n\n\treturn deltas;\n});\n\n// Add special case for AttributeDelta x SplitDelta transformation.\n(0, _transform.addTransformationCase)(_attributedelta2.default, _splitdelta2.default, function (a, b, isStrong) {\n\tvar splitPosition = new _position2.default(b.position.root, b.position.path.slice(0, -1));\n\n\tvar deltas = (0, _transform.defaultTransform)(a, b, isStrong);\n\n\tvar _iteratorNormalCompletion = true;\n\tvar _didIteratorError = false;\n\tvar _iteratorError = undefined;\n\n\ttry {\n\t\tfor (var _iterator = a.operations[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\tvar operation = _step.value;\n\n\t\t\t// If a node that has been split has it's attribute updated, we should also update attribute of\n\t\t\t// the node created during splitting.\n\t\t\tif (operation.range.containsPosition(splitPosition) || operation.range.start.isEqual(splitPosition)) {\n\t\t\t\tvar additionalAttributeDelta = new _attributedelta2.default();\n\n\t\t\t\tvar rangeStart = splitPosition.getShiftedBy(1);\n\t\t\t\tvar rangeEnd = _position2.default.createFromPosition(rangeStart);\n\t\t\t\trangeEnd.path.push(0);\n\n\t\t\t\tvar oldValue = b._cloneOperation.nodes.getNode(0).getAttribute(operation.key);\n\n\t\t\t\tadditionalAttributeDelta.addOperation(new _attributeoperation2.default(new _range2.default(rangeStart, rangeEnd), operation.key, oldValue === undefined ? null : oldValue, operation.newValue, 0));\n\n\t\t\t\tdeltas.push(additionalAttributeDelta);\n\n\t\t\t\tbreak;\n\t\t\t}\n\t\t}\n\t} catch (err) {\n\t\t_didIteratorError = true;\n\t\t_iteratorError = err;\n\t} finally {\n\t\ttry {\n\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t_iterator.return();\n\t\t\t}\n\t\t} finally {\n\t\t\tif (_didIteratorError) {\n\t\t\t\tthrow _iteratorError;\n\t\t\t}\n\t\t}\n\t}\n\n\treturn deltas;\n});\n\n// Add special case for InsertDelta x MergeDelta transformation.\n(0, _transform.addTransformationCase)(_insertdelta2.default, _mergedelta2.default, function (a, b, isStrong) {\n\t// If insert is applied at the same position where merge happened, we reverse the merge (we treat it like it\n\t// didn't happen) and then apply the original insert operation. This is \"mirrored\" in MergeDelta x InsertDelta\n\t// transformation below, where we simply do not apply MergeDelta.\n\tif (a.position.isEqual(b.position)) {\n\t\treturn [b.getReversed(), a.clone()];\n\t}\n\n\treturn (0, _transform.defaultTransform)(a, b, isStrong);\n});\n\n// Add special case for MarkerDelta x SplitDelta\n(0, _transform.addTransformationCase)(_markerdelta2.default, _splitdelta2.default, function (a, b, isStrong) {\n\t// If marked range is split, we need to fix it:\n\t// ab[cdef]gh   ==>  ab[cd\n\t//                   ef]gh\n\t// To mimic what normally happens with LiveRange if you split it.\n\n\t// Mote: MarkerDelta can't get split to two deltas, neither can MarkerOperation.\n\tvar transformedDelta = (0, _transform.defaultTransform)(a, b, isStrong)[0];\n\tvar transformedOp = transformedDelta.operations[0];\n\n\t// Fix positions, if needed.\n\tvar markerOp = a.operations[0];\n\n\tvar source = b.position;\n\tvar target = b._moveOperation.targetPosition;\n\n\tif (markerOp.oldRange.containsPosition(b.position)) {\n\t\ttransformedOp.oldRange.end = markerOp.oldRange.end._getCombined(source, target);\n\t}\n\n\tif (markerOp.newRange.containsPosition(b.position)) {\n\t\ttransformedOp.newRange.end = markerOp.newRange.end._getCombined(source, target);\n\t}\n\n\treturn [transformedDelta];\n});\n\n// Add special case for MoveDelta x MergeDelta transformation.\n(0, _transform.addTransformationCase)(_movedelta2.default, _mergedelta2.default, function (a, b, isStrong) {\n\t// If move delta is supposed to move a node that has been merged, we reverse the merge (we treat it like it\n\t// didn't happen) and then apply the original move operation. This is \"mirrored\" in MergeDelta x MoveDelta\n\t// transformation below, where we simply do not apply MergeDelta.\n\n\tvar operateInSameParent = a.sourcePosition.root == b.position.root && (0, _comparearrays2.default)(a.sourcePosition.getParentPath(), b.position.getParentPath()) === 'same';\n\n\tvar mergeInsideMoveRange = a.sourcePosition.offset <= b.position.offset && a.sourcePosition.offset + a.howMany > b.position.offset;\n\n\tif (operateInSameParent && mergeInsideMoveRange) {\n\t\treturn [b.getReversed(), a.clone()];\n\t}\n\n\treturn (0, _transform.defaultTransform)(a, b, isStrong);\n});\n\n// Add special case for MergeDelta x InsertDelta transformation.\n(0, _transform.addTransformationCase)(_mergedelta2.default, _insertdelta2.default, function (a, b, isStrong) {\n\t// If merge is applied at the same position where we inserted a range of nodes we cancel the merge as it's results\n\t// may be unexpected and very weird. Even if we do some \"magic\" we don't know what really are users' expectations.\n\tif (a.position.isEqual(b.position)) {\n\t\treturn [noDelta()];\n\t}\n\n\treturn (0, _transform.defaultTransform)(a, b, isStrong);\n});\n\n// Add special case for MergeDelta x MoveDelta transformation.\n(0, _transform.addTransformationCase)(_mergedelta2.default, _movedelta2.default, function (a, b, isStrong) {\n\t// If merge is applied at the position between moved nodes we cancel the merge as it's results may be unexpected and\n\t// very weird. Even if we do some \"magic\" we don't know what really are users' expectations.\n\n\tvar operateInSameParent = a.position.root == b.sourcePosition.root && (0, _comparearrays2.default)(a.position.getParentPath(), b.sourcePosition.getParentPath()) === 'same';\n\n\tvar mergeInsideMoveRange = b.sourcePosition.offset <= a.position.offset && b.sourcePosition.offset + b.howMany > a.position.offset;\n\n\tif (operateInSameParent && mergeInsideMoveRange) {\n\t\treturn [noDelta()];\n\t}\n\n\treturn (0, _transform.defaultTransform)(a, b, isStrong);\n});\n\n// Add special case for SplitDelta x SplitDelta transformation.\n(0, _transform.addTransformationCase)(_splitdelta2.default, _splitdelta2.default, function (a, b, isStrong) {\n\tvar pathA = a.position.getParentPath();\n\tvar pathB = b.position.getParentPath();\n\n\t// The special case is for splits inside the same parent.\n\tif ((0, _comparearrays2.default)(pathA, pathB) == 'same') {\n\t\tif (a.position.offset == b.position.offset) {\n\t\t\t// We are applying split at the position where split already happened. Additional split is not needed.\n\t\t\treturn [noDelta()];\n\t\t} else if (a.position.offset < b.position.offset) {\n\t\t\t// Incoming split delta splits at closer offset. So we simply have to once again split the same node,\n\t\t\t// but since it was already split (at further offset) there are less child nodes in the split node.\n\t\t\t// This means that we have to update `howMany` parameter of `MoveOperation` for that delta.\n\n\t\t\tvar delta = a.clone();\n\t\t\tdelta._moveOperation.howMany = b.position.offset - a.position.offset;\n\n\t\t\t// If both SplitDeltas are taking their nodes from graveyard, we have to transform their ReinsertOperations.\n\t\t\tif (a._cloneOperation instanceof _reinsertoperation2.default && b._cloneOperation instanceof _reinsertoperation2.default && a._cloneOperation.sourcePosition.offset > b._cloneOperation.sourcePosition.offset) {\n\t\t\t\tdelta._cloneOperation.sourcePosition.offset--;\n\t\t\t}\n\n\t\t\treturn [delta];\n\t\t} else {\n\t\t\t// Incoming split delta splits at further offset. We have to simulate that we are not splitting the\n\t\t\t// original split node but the node after it, which got created by the other split delta.\n\t\t\t// To do so, we increment offsets so it looks like the split delta was created in the next node.\n\n\t\t\tvar _delta = a.clone();\n\n\t\t\t_delta._cloneOperation.position.offset++;\n\t\t\t_delta._moveOperation.sourcePosition.path[_delta._moveOperation.sourcePosition.path.length - 2]++;\n\t\t\t_delta._moveOperation.targetPosition.path[_delta._moveOperation.targetPosition.path.length - 2]++;\n\t\t\t_delta._moveOperation.sourcePosition.offset = a.position.offset - b.position.offset;\n\n\t\t\t// If both SplitDeltas are taking their nodes from graveyard, we have to transform their ReinsertOperations.\n\t\t\tif (a._cloneOperation instanceof _reinsertoperation2.default && b._cloneOperation instanceof _reinsertoperation2.default && a._cloneOperation.sourcePosition.offset > b._cloneOperation.sourcePosition.offset) {\n\t\t\t\t_delta._cloneOperation.sourcePosition.offset--;\n\t\t\t}\n\n\t\t\treturn [_delta];\n\t\t}\n\t}\n\n\treturn (0, _transform.defaultTransform)(a, b, isStrong);\n});\n\n// Add special case for SplitDelta x UnwrapDelta transformation.\n(0, _transform.addTransformationCase)(_splitdelta2.default, _unwrapdelta2.default, function (a, b, isStrong) {\n\t// If incoming split delta tries to split a node that just got unwrapped, there is actually nothing to split,\n\t// so we discard that delta.\n\tif ((0, _comparearrays2.default)(b.position.path, a.position.getParentPath()) === 'same') {\n\t\treturn [noDelta()];\n\t}\n\n\treturn (0, _transform.defaultTransform)(a, b, isStrong);\n});\n\n// Add special case for SplitDelta x WrapDelta transformation.\n(0, _transform.addTransformationCase)(_splitdelta2.default, _wrapdelta2.default, function (a, b, isStrong) {\n\t// If split is applied at the position between wrapped nodes, we cancel the split as it's results may be unexpected and\n\t// very weird. Even if we do some \"magic\" we don't know what really are users' expectations.\n\n\tvar operateInSameParent = (0, _comparearrays2.default)(a.position.getParentPath(), b.range.start.getParentPath()) === 'same';\n\tvar splitInsideWrapRange = b.range.start.offset < a.position.offset && b.range.end.offset >= a.position.offset;\n\n\tif (operateInSameParent && splitInsideWrapRange) {\n\t\treturn [noDelta()];\n\t} else if ((0, _comparearrays2.default)(a.position.getParentPath(), b.range.end.getShiftedBy(-1).path) === 'same') {\n\t\t// Split position is directly inside the last node from wrap range.\n\t\t// If that's the case, we manually change split delta so it will \"target\" inside the wrapping element.\n\t\t// By doing so we will be inserting split node right to the original node which feels natural and is a good UX.\n\t\tvar delta = a.clone();\n\n\t\t// 1. Fix insert operation position.\n\t\t// Node to split is the last children of the wrapping element.\n\t\t// Wrapping element is the element inserted by WrapDelta (re)insert operation.\n\t\t// It is inserted after the wrapped range, but the wrapped range will be moved inside it.\n\t\t// Having this in mind, it is correct to use wrapped range start position as the position before wrapping element.\n\t\tvar splitNodePos = _position2.default.createFromPosition(b.range.start);\n\t\t// Now, `splitNodePos` points before wrapping element.\n\t\t// To get a position before last children of that element, we expand position's `path` member by proper offset.\n\t\tsplitNodePos.path.push(b.howMany - 1);\n\n\t\t// SplitDelta insert operation position should be right after the node we split.\n\t\tvar insertPos = splitNodePos.getShiftedBy(1);\n\t\tdelta._cloneOperation.position = insertPos;\n\n\t\t// 2. Fix move operation source position.\n\t\t// Nodes moved by SplitDelta will be moved from new position, modified by WrapDelta.\n\t\t// To obtain that new position, `splitNodePos` will be used, as this is the node we are extracting children from.\n\t\tvar sourcePos = _position2.default.createFromPosition(splitNodePos);\n\t\t// Nothing changed inside split node so it is correct to use the original split position offset.\n\t\tsourcePos.path.push(a.position.offset);\n\t\tdelta._moveOperation.sourcePosition = sourcePos;\n\n\t\t// 3. Fix move operation target position.\n\t\t// SplitDelta move operation target position should be inside the node inserted by operation above.\n\t\t// Since the node is empty, we will insert at offset 0.\n\t\tvar targetPos = _position2.default.createFromPosition(insertPos);\n\t\ttargetPos.path.push(0);\n\t\tdelta._moveOperation.targetPosition = targetPos;\n\n\t\treturn [delta];\n\t}\n\n\treturn (0, _transform.defaultTransform)(a, b, isStrong);\n});\n\n// Add special case for SplitDelta x WrapDelta transformation.\n(0, _transform.addTransformationCase)(_splitdelta2.default, _attributedelta2.default, function (a, b) {\n\ta = a.clone();\n\n\tvar splitPosition = new _position2.default(a.position.root, a.position.path.slice(0, -1));\n\n\tif (a._cloneOperation instanceof _insertoperation2.default) {\n\t\t// If element to split had it's attribute changed, we have to reflect this change in an element\n\t\t// that is in SplitDelta's InsertOperation.\n\t\tvar _iteratorNormalCompletion2 = true;\n\t\tvar _didIteratorError2 = false;\n\t\tvar _iteratorError2 = undefined;\n\n\t\ttry {\n\t\t\tfor (var _iterator2 = b.operations[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {\n\t\t\t\tvar operation = _step2.value;\n\n\t\t\t\tif (operation.range.containsPosition(splitPosition) || operation.range.start.isEqual(splitPosition)) {\n\t\t\t\t\tif (operation.newValue !== null) {\n\t\t\t\t\t\ta._cloneOperation.nodes.getNode(0).setAttribute(operation.key, operation.newValue);\n\t\t\t\t\t} else {\n\t\t\t\t\t\ta._cloneOperation.nodes.getNode(0).removeAttribute(operation.key);\n\t\t\t\t\t}\n\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t}\n\t\t} catch (err) {\n\t\t\t_didIteratorError2 = true;\n\t\t\t_iteratorError2 = err;\n\t\t} finally {\n\t\t\ttry {\n\t\t\t\tif (!_iteratorNormalCompletion2 && _iterator2.return) {\n\t\t\t\t\t_iterator2.return();\n\t\t\t\t}\n\t\t\t} finally {\n\t\t\t\tif (_didIteratorError2) {\n\t\t\t\t\tthrow _iteratorError2;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\treturn [a];\n});\n\n// Add special case for UnwrapDelta x SplitDelta transformation.\n(0, _transform.addTransformationCase)(_unwrapdelta2.default, _splitdelta2.default, function (a, b, isStrong) {\n\t// If incoming unwrap delta tries to unwrap node that got split we should unwrap the original node and the split copy.\n\t// This can be achieved either by reverting split and applying unwrap to singular node, or creating additional unwrap delta.\n\tif ((0, _comparearrays2.default)(a.position.path, b.position.getParentPath()) === 'same') {\n\t\tvar transformed = [b.getReversed(), a.clone()];\n\n\t\t// It's a kind of magic-magic-magic-maaaaagiiic!\n\t\ttransformed[1].operations[1].targetPosition.path[0]++;\n\t\t// But seriously, we have to fix RemoveOperation in the second delta because reversed UnwrapDelta creates\n\t\t// MergeDelta which also has RemoveOperation. Those two operations cannot point to the same \"holder\" element\n\t\t// in the graveyard, so we fix it by hand. This is the only case where it happens in \"special\" transformation\n\t\t// cases, and it won't happen for \"default\" transformation apart of RemoveDelta, where it is okay.\n\n\t\treturn transformed;\n\t}\n\n\treturn (0, _transform.defaultTransform)(a, b, isStrong);\n});\n\n// Add special case for WeakInsertDelta x AttributeDelta transformation.\n(0, _transform.addTransformationCase)(_weakinsertdelta2.default, _attributedelta2.default, function (a, b) {\n\t// If nodes are weak-inserted into attribute delta range, we need to apply changes from attribute delta on them.\n\tvar deltas = [a.clone()];\n\n\tif (b.range.containsPosition(a.position)) {\n\t\tdeltas.push(_getComplementaryAttrDelta(a, b));\n\t}\n\n\treturn deltas;\n});\n\n// Add special case for WrapDelta x SplitDelta transformation.\n(0, _transform.addTransformationCase)(_wrapdelta2.default, _splitdelta2.default, function (a, b, isStrong) {\n\t// If incoming wrap delta tries to wrap range that contains split position, we have to cancel the split and apply\n\t// the wrap. Since split was already applied, we have to revert it.\n\n\tvar operateInSameParent = (0, _comparearrays2.default)(a.range.start.getParentPath(), b.position.getParentPath()) === 'same';\n\tvar splitInsideWrapRange = a.range.start.offset < b.position.offset && a.range.end.offset >= b.position.offset;\n\n\tif (operateInSameParent && splitInsideWrapRange) {\n\t\treturn [b.getReversed(), a.clone()];\n\t} else if ((0, _comparearrays2.default)(b.position.getParentPath(), a.range.end.getShiftedBy(-1).path) === 'same') {\n\t\tvar delta = a.clone();\n\n\t\t// Move wrapping element insert position one node further so it is after the split node insertion.\n\t\tdelta._insertOperation.position.offset++;\n\n\t\t// Include the split node copy.\n\t\tdelta._moveOperation.howMany++;\n\n\t\t// Change the path to wrapping element in move operation.\n\t\tdelta._moveOperation.targetPosition.path[delta._moveOperation.targetPosition.path.length - 2]++;\n\n\t\treturn [delta];\n\t}\n\n\treturn (0, _transform.defaultTransform)(a, b, isStrong);\n});\n\n// Add special case for RenameDelta x SplitDelta transformation.\n(0, _transform.addTransformationCase)(_renamedelta2.default, _splitdelta2.default, function (a, b, isStrong) {\n\tvar splitPosition = new _position2.default(b.position.root, b.position.path.slice(0, -1));\n\n\tvar deltas = (0, _transform.defaultTransform)(a, b, isStrong);\n\n\tif (a.operations[0].position.isEqual(splitPosition)) {\n\t\t// If a node that has been split has it's name changed, we should also change name of\n\t\t// the node created during splitting.\n\t\tvar additionalRenameDelta = a.clone();\n\t\tadditionalRenameDelta.operations[0].position = a.operations[0].position.getShiftedBy(1);\n\n\t\tdeltas.push(additionalRenameDelta);\n\t}\n\n\treturn deltas;\n});\n\n// Add special case for SplitDelta x RenameDelta transformation.\n(0, _transform.addTransformationCase)(_splitdelta2.default, _renamedelta2.default, function (a, b) {\n\ta = a.clone();\n\n\tvar splitPosition = new _position2.default(a.position.root, a.position.path.slice(0, -1));\n\n\tif (a._cloneOperation instanceof _insertoperation2.default) {\n\t\t// If element to split had it's name changed, we have to reflect this change in an element\n\t\t// that is in SplitDelta's InsertOperation.\n\t\tif (b.operations[0].position.isEqual(splitPosition)) {\n\t\t\ta._cloneOperation.nodes.getNode(0).name = b.operations[0].newName;\n\t\t}\n\t}\n\n\treturn [a];\n});\n\n// Add special case for RemoveDelta x SplitDelta transformation.\n(0, _transform.addTransformationCase)(_removedelta2.default, _splitdelta2.default, function (a, b, isStrong) {\n\tvar deltas = (0, _transform.defaultTransform)(a, b, isStrong);\n\tvar insertPosition = b._cloneOperation.position;\n\n\t// In case if `defaultTransform` returned more than one delta.\n\tvar _iteratorNormalCompletion3 = true;\n\tvar _didIteratorError3 = false;\n\tvar _iteratorError3 = undefined;\n\n\ttry {\n\t\tfor (var _iterator3 = deltas[Symbol.iterator](), _step3; !(_iteratorNormalCompletion3 = (_step3 = _iterator3.next()).done); _iteratorNormalCompletion3 = true) {\n\t\t\tvar delta = _step3.value;\n\t\t\tvar _iteratorNormalCompletion4 = true;\n\t\t\tvar _didIteratorError4 = false;\n\t\t\tvar _iteratorError4 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator4 = delta.operations[Symbol.iterator](), _step4; !(_iteratorNormalCompletion4 = (_step4 = _iterator4.next()).done); _iteratorNormalCompletion4 = true) {\n\t\t\t\t\tvar operation = _step4.value;\n\n\t\t\t\t\tvar rangeEnd = operation.sourcePosition.getShiftedBy(operation.howMany);\n\n\t\t\t\t\tif (rangeEnd.isEqual(insertPosition)) {\n\t\t\t\t\t\toperation.howMany += 1;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError4 = true;\n\t\t\t\t_iteratorError4 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion4 && _iterator4.return) {\n\t\t\t\t\t\t_iterator4.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError4) {\n\t\t\t\t\t\tthrow _iteratorError4;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t} catch (err) {\n\t\t_didIteratorError3 = true;\n\t\t_iteratorError3 = err;\n\t} finally {\n\t\ttry {\n\t\t\tif (!_iteratorNormalCompletion3 && _iterator3.return) {\n\t\t\t\t_iterator3.return();\n\t\t\t}\n\t\t} finally {\n\t\t\tif (_didIteratorError3) {\n\t\t\t\tthrow _iteratorError3;\n\t\t\t}\n\t\t}\n\t}\n\n\treturn deltas;\n});\n\n// Add special case for SplitDelta x RemoveDelta transformation.\n(0, _transform.addTransformationCase)(_splitdelta2.default, _removedelta2.default, function (a, b, isStrong) {\n\tb = b.clone();\n\n\tvar insertPosition = a._cloneOperation.position;\n\n\tvar _iteratorNormalCompletion5 = true;\n\tvar _didIteratorError5 = false;\n\tvar _iteratorError5 = undefined;\n\n\ttry {\n\t\tfor (var _iterator5 = b.operations[Symbol.iterator](), _step5; !(_iteratorNormalCompletion5 = (_step5 = _iterator5.next()).done); _iteratorNormalCompletion5 = true) {\n\t\t\tvar operation = _step5.value;\n\n\t\t\tvar rangeEnd = operation.sourcePosition.getShiftedBy(operation.howMany);\n\n\t\t\tif (rangeEnd.isEqual(insertPosition)) {\n\t\t\t\toperation.howMany += 1;\n\t\t\t}\n\t\t}\n\t} catch (err) {\n\t\t_didIteratorError5 = true;\n\t\t_iteratorError5 = err;\n\t} finally {\n\t\ttry {\n\t\t\tif (!_iteratorNormalCompletion5 && _iterator5.return) {\n\t\t\t\t_iterator5.return();\n\t\t\t}\n\t\t} finally {\n\t\t\tif (_didIteratorError5) {\n\t\t\t\tthrow _iteratorError5;\n\t\t\t}\n\t\t}\n\t}\n\n\treturn (0, _transform.defaultTransform)(a, b, isStrong);\n});\n\n// Helper function for `AttributeDelta` class transformations.\n// Creates an attribute delta that sets attribute from given `attributeDelta` on nodes from given `weakInsertDelta`.\nfunction _getComplementaryAttrDelta(weakInsertDelta, attributeDelta) {\n\tvar complementaryAttrDelta = new _attributedelta2.default();\n\tvar nodes = weakInsertDelta.nodes;\n\n\t// At the beginning we store the attribute value from the first node on `weakInsertDelta` node list.\n\tvar val = nodes.getNode(0).getAttribute(attributeDelta.key);\n\n\t// This stores the last index of `weakInsertDelta` node list where the attribute value was different\n\t// than in the previous node. We need it to create separate `AttributeOperation`s for nodes with different attributes.\n\tvar lastOffset = 0;\n\t// Sum of offsets of already processed nodes.\n\tvar offsetSum = nodes.getNode(0).offsetSize;\n\n\tfor (var i = 1; i < nodes.length; i++) {\n\t\tvar node = nodes.getNode(i);\n\t\tvar nodeAttrVal = node.getAttribute(attributeDelta.key);\n\n\t\t// If previous node has different attribute value, we will create an operation to the point before current node.\n\t\t// So all nodes with the same attributes up to this point will be included in one `AttributeOperation`.\n\t\tif (nodeAttrVal != val) {\n\t\t\t// New operation is created only when it is needed. If given node already has proper value for this\n\t\t\t// attribute we simply skip it without adding a new operation.\n\t\t\tif (val != attributeDelta.value) {\n\t\t\t\taddOperation();\n\t\t\t}\n\n\t\t\tval = nodeAttrVal;\n\t\t\tlastOffset = offsetSum;\n\t\t}\n\n\t\toffsetSum = offsetSum + node.offsetSize;\n\t}\n\n\t// At the end we have to add additional `AttributeOperation` for the last part of node list. If all nodes on the\n\t// node list had same attributes, this will be the only operation added to the delta.\n\taddOperation();\n\n\treturn complementaryAttrDelta;\n\n\tfunction addOperation() {\n\t\tvar range = new _range2.default(weakInsertDelta.position.getShiftedBy(lastOffset), weakInsertDelta.position.getShiftedBy(offsetSum));\n\n\t\tvar attrOperation = new _attributeoperation2.default(range, attributeDelta.key, val, attributeDelta.value, 0);\n\t\tcomplementaryAttrDelta.addOperation(attrOperation);\n\t}\n}\n\n// This is \"no-op\" delta, it has no type and only no-operation, it basically does nothing.\n// It is used when we don't want to apply changes but still we need to return a delta.\nfunction noDelta() {\n\tvar noDelta = new _delta3.default();\n\n\t// BaseVersion will be fixed later anyway.\n\tnoDelta.addOperation(new _nooperation2.default(0));\n\n\treturn noDelta;\n}\n\n/***/ }),\n/* 312 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _delta = __webpack_require__(19);\n\nvar _delta2 = _interopRequireDefault(_delta);\n\nvar _deltafactory = __webpack_require__(17);\n\nvar _deltafactory2 = _interopRequireDefault(_deltafactory);\n\nvar _batch = __webpack_require__(16);\n\nvar _markeroperation = __webpack_require__(111);\n\nvar _markeroperation2 = _interopRequireDefault(_markeroperation);\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module engine/model/delta/markerdelta\n */\n\n/**\n * @classdesc\n * To provide specific OT behavior and better collisions solving, the {@link module:engine/model/batch~Batch#setMarker Batch#setMarker}\n * and {@link module:engine/model/batch~Batch#removeMarker Batch#removeMarker} methods use the `MarkerDelta` class which inherits\n * from the `Delta` class and may overwrite some methods.\n */\nvar MarkerDelta = function (_Delta) {\n\t_inherits(MarkerDelta, _Delta);\n\n\tfunction MarkerDelta() {\n\t\t_classCallCheck(this, MarkerDelta);\n\n\t\treturn _possibleConstructorReturn(this, (MarkerDelta.__proto__ || Object.getPrototypeOf(MarkerDelta)).apply(this, arguments));\n\t}\n\n\t_createClass(MarkerDelta, [{\n\t\tkey: 'type',\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tget: function get() {\n\t\t\treturn 'marker';\n\t\t}\n\n\t\t/**\n   * A class that will be used when creating reversed delta.\n   *\n   * @private\n   * @type {Function}\n   */\n\n\t}, {\n\t\tkey: '_reverseDeltaClass',\n\t\tget: function get() {\n\t\t\treturn MarkerDelta;\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}], [{\n\t\tkey: 'className',\n\t\tget: function get() {\n\t\t\treturn 'engine.model.delta.MarkerDelta';\n\t\t}\n\t}]);\n\n\treturn MarkerDelta;\n}(_delta2.default);\n\n/**\n * Adds or updates {@link module:engine/model/markercollection~Marker marker} with given name to given `range`.\n *\n * If passed name is a name of already existing marker (or {@link module:engine/model/markercollection~Marker Marker} instance\n * is passed), `range` parameter may be omitted. In this case marker will not be updated in\n * {@link module:engine/model/document~Document#markers document marker collection}. However the marker will be added to\n * the document history. This may be important for other features, like undo. From document history point of view, it will\n * look like the marker was created and added to the document at the moment when it is set using this method.\n *\n * This is useful if the marker is created before it can be added to document history (e.g. a feature creating the marker\n * is waiting for additional data, etc.). In this case, the marker may be first created directly through\n * {@link module:engine/model/markercollection~MarkerCollection MarkerCollection API} and only later added using `Batch` API.\n *\n * @chainable\n * @method module:engine/model/batch~Batch#setMarker\n * @param {module:engine/model/markercollection~Marker|String} markerOrName Marker or marker name to add or update.\n * @param {module:engine/model/range~Range} [newRange] Marker range.\n */\n\n\nexports.default = MarkerDelta;\n(0, _batch.register)('setMarker', function (markerOrName, newRange) {\n\tvar name = typeof markerOrName == 'string' ? markerOrName : markerOrName.name;\n\tvar currentMarker = this.document.markers.get(name);\n\n\tif (!newRange && !currentMarker) {\n\t\t/**\n   * Range parameter is required when adding a new marker.\n   *\n   * @error batch-setMarker-no-range\n   */\n\t\tthrow new _ckeditorerror2.default('batch-setMarker-no-range: Range parameter is required when adding a new marker.');\n\t}\n\n\tvar currentRange = currentMarker ? currentMarker.getRange() : null;\n\n\tif (!newRange) {\n\t\t// If `newRange` is not given, treat this as synchronizing existing marker.\n\t\t// Create `MarkerOperation` with `oldRange` set to `null`, so reverse operation will remove the marker.\n\t\taddOperation(this, name, null, currentRange);\n\t} else {\n\t\t// Just change marker range.\n\t\taddOperation(this, name, currentRange, newRange);\n\t}\n\n\treturn this;\n});\n\n/**\n * Removes given {@link module:engine/model/markercollection~Marker marker} or marker with given name.\n *\n * @chainable\n * @method module:engine/model/batch~Batch#removeMarker\n * @param {module:engine/model/markercollection~Marker|String} markerOrName Marker or marker name to remove.\n */\n(0, _batch.register)('removeMarker', function (markerOrName) {\n\tvar name = typeof markerOrName == 'string' ? markerOrName : markerOrName.name;\n\n\tif (!this.document.markers.has(name)) {\n\t\t/**\n   * Trying to remove marker that does not exist.\n   *\n   * @error batch-removeMarker-no-marker\n   */\n\t\tthrow new _ckeditorerror2.default('batch-removeMarker-no-marker: Trying to remove marker that does not exist.');\n\t}\n\n\tvar oldRange = this.document.markers.get(name).getRange();\n\n\taddOperation(this, name, oldRange, null);\n\n\treturn this;\n});\n\nfunction addOperation(batch, name, oldRange, newRange) {\n\tvar doc = batch.document;\n\tvar delta = new MarkerDelta();\n\n\tvar operation = new _markeroperation2.default(name, oldRange, newRange, doc.markers, doc.version);\n\n\tbatch.addDelta(delta);\n\tdelta.addOperation(operation);\n\tdoc.applyOperation(operation);\n}\n\n_deltafactory2.default.register(MarkerDelta);\n\n/***/ }),\n/* 313 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module engine/model/document\n */\n\n// Load all basic deltas and transformations, they register themselves, but they need to be imported somewhere.\n// jshint ignore:line\n// jshint ignore:line\n\nvar _basicDeltas = __webpack_require__(310);\n\nvar _basicDeltas2 = _interopRequireDefault(_basicDeltas);\n\nvar _basicTransformations = __webpack_require__(311);\n\nvar _basicTransformations2 = _interopRequireDefault(_basicTransformations);\n\nvar _range = __webpack_require__(3);\n\nvar _range2 = _interopRequireDefault(_range);\n\nvar _position = __webpack_require__(1);\n\nvar _position2 = _interopRequireDefault(_position);\n\nvar _rootelement = __webpack_require__(166);\n\nvar _rootelement2 = _interopRequireDefault(_rootelement);\n\nvar _batch = __webpack_require__(16);\n\nvar _batch2 = _interopRequireDefault(_batch);\n\nvar _history = __webpack_require__(314);\n\nvar _history2 = _interopRequireDefault(_history);\n\nvar _liveselection = __webpack_require__(315);\n\nvar _liveselection2 = _interopRequireDefault(_liveselection);\n\nvar _schema = __webpack_require__(319);\n\nvar _schema2 = _interopRequireDefault(_schema);\n\nvar _treewalker = __webpack_require__(38);\n\nvar _treewalker2 = _interopRequireDefault(_treewalker);\n\nvar _markercollection = __webpack_require__(316);\n\nvar _markercollection2 = _interopRequireDefault(_markercollection);\n\nvar _clone = __webpack_require__(94);\n\nvar _clone2 = _interopRequireDefault(_clone);\n\nvar _emittermixin = __webpack_require__(8);\n\nvar _emittermixin2 = _interopRequireDefault(_emittermixin);\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nvar _mix = __webpack_require__(4);\n\nvar _mix2 = _interopRequireDefault(_mix);\n\nvar _unicode = __webpack_require__(277);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nvar _marked = [combineWalkers].map(regeneratorRuntime.mark);\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nvar graveyardName = '$graveyard';\n\n/**\n * Document tree model describes all editable data in the editor. It may contain multiple\n * {@link module:engine/model/document~Document#roots root elements}, for example if the editor have multiple editable areas,\n * each area will be represented by the separate root.\n *\n * All changes in the document are done by {@link module:engine/model/operation/operation~Operation operations}. To create operations in\n * a simple way, use the {@link module:engine/model/batch~Batch} API, for example:\n *\n *\t\tdoc.batch().insert( position, nodes ).split( otherPosition );\n *\n * @see module:engine/model/document~Document#batch\n * @mixes module:utils/emittermixin~EmitterMixin\n */\n\nvar Document = function () {\n\t/**\n  * Creates an empty document instance with no {@link #roots} (other than\n  * the {@link #graveyard graveyard root}).\n  */\n\tfunction Document() {\n\t\tvar _this = this;\n\n\t\t_classCallCheck(this, Document);\n\n\t\t/**\n   * Document version. It starts from `0` and every operation increases the version number. It is used to ensure that\n   * operations are applied on the proper document version.\n   * If the {@link module:engine/model/operation/operation~Operation#baseVersion} will not match document version the\n   * {@link module:utils/ckeditorerror~CKEditorError model-document-applyOperation-wrong-version} error is thrown.\n   *\n   * @readonly\n   * @member {Number}\n   */\n\t\tthis.version = 0;\n\n\t\t/**\n   * Schema for this document.\n   *\n   * @member {module:engine/model/schema~Schema}\n   */\n\t\tthis.schema = new _schema2.default();\n\n\t\t/**\n   * Document's history.\n   *\n   * **Note:** Be aware that deltas applied to the document might get removed or changed.\n   *\n   * @readonly\n   * @member {module:engine/model/history~History}\n   */\n\t\tthis.history = new _history2.default(this);\n\n\t\t/**\n   * Document's markers' collection.\n   *\n   * @readonly\n   * @member {module:engine/model/markercollection~MarkerCollection}\n   */\n\t\tthis.markers = new _markercollection2.default();\n\n\t\t/**\n   * Selection done on this document.\n   *\n   * @readonly\n   * @member {module:engine/model/liveselection~LiveSelection}\n   */\n\t\tthis.selection = new _liveselection2.default(this);\n\n\t\t/**\n   * Array of pending changes. See: {@link #enqueueChanges}.\n   *\n   * @private\n   * @member {Array.<Function>}\n   */\n\t\tthis._pendingChanges = [];\n\n\t\t/**\n   * List of roots that are owned and managed by this document. Use {@link #createRoot} and\n   * {@link #getRoot} to manipulate it.\n   *\n   * @readonly\n   * @member {Map}\n   */\n\t\tthis.roots = new Map();\n\n\t\t// Add events that will ensure selection correctness.\n\t\tthis.selection.on('change:range', function () {\n\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\tvar _didIteratorError = false;\n\t\t\tvar _iteratorError = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator = _this.selection.getRanges()[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\tvar range = _step.value;\n\n\t\t\t\t\tif (!_this._validateSelectionRange(range)) {\n\t\t\t\t\t\t/**\n       * Range from document selection starts or ends at incorrect position.\n       *\n       * @error document-selection-wrong-position\n       * @param {module:engine/model/range~Range} range\n       */\n\t\t\t\t\t\tthrow new _ckeditorerror2.default('document-selection-wrong-position: ' + 'Range from document selection starts or ends at incorrect position.', { range: range });\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError = true;\n\t\t\t\t_iteratorError = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t});\n\n\t\t// Graveyard tree root. Document always have a graveyard root, which stores removed nodes.\n\t\tthis.createRoot('$root', graveyardName);\n\t}\n\n\t/**\n  * Graveyard tree root. Document always have a graveyard root, which stores removed nodes.\n  *\n  * @readonly\n  * @member {module:engine/model/rootelement~RootElement}\n  */\n\n\n\t_createClass(Document, [{\n\t\tkey: 'applyOperation',\n\n\n\t\t/**\n   * This is the entry point for all document changes. All changes on the document are done using\n   * {@link module:engine/model/operation/operation~Operation operations}. To create operations in the simple way use the\n   * {@link module:engine/model/batch~Batch} API available via {@link #batch} method.\n   *\n   * @fires event:change\n   * @param {module:engine/model/operation/operation~Operation} operation Operation to be applied.\n   */\n\t\tvalue: function applyOperation(operation) {\n\t\t\tif (operation.baseVersion !== this.version) {\n\t\t\t\t/**\n     * Only operations with matching versions can be applied.\n     *\n     * @error document-applyOperation-wrong-version\n     * @param {module:engine/model/operation/operation~Operation} operation\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('model-document-applyOperation-wrong-version: Only operations with matching versions can be applied.', { operation: operation });\n\t\t\t}\n\n\t\t\tvar changes = operation._execute();\n\n\t\t\tthis.version++;\n\n\t\t\tthis.history.addDelta(operation.delta);\n\n\t\t\tif (changes) {\n\t\t\t\t// `NoOperation` returns no changes, do not fire event for it.\n\t\t\t\tthis.fire('change', operation.type, changes, operation.delta.batch, operation.delta.type);\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Creates a {@link module:engine/model/batch~Batch} instance which allows to change the document.\n   *\n   * @param {String} [type] Batch type. See {@link module:engine/model/batch~Batch#type}.\n   * @returns {module:engine/model/batch~Batch} Batch instance.\n   */\n\n\t}, {\n\t\tkey: 'batch',\n\t\tvalue: function batch(type) {\n\t\t\treturn new _batch2.default(this, type);\n\t\t}\n\n\t\t/**\n   * Creates a new top-level root.\n   *\n   * @param {String} [elementName='$root'] Element name. Defaults to `'$root'` which also have\n   * some basic schema defined (`$block`s are allowed inside the `$root`). Make sure to define a proper\n   * schema if you use a different name.\n   * @param {String} [rootName='main'] Unique root name.\n   * @returns {module:engine/model/rootelement~RootElement} Created root.\n   */\n\n\t}, {\n\t\tkey: 'createRoot',\n\t\tvalue: function createRoot() {\n\t\t\tvar elementName = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : '$root';\n\t\t\tvar rootName = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 'main';\n\n\t\t\tif (this.roots.has(rootName)) {\n\t\t\t\t/**\n     * Root with specified name already exists.\n     *\n     * @error document-createRoot-name-exists\n     * @param {module:engine/model/document~Document} doc\n     * @param {String} name\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('model-document-createRoot-name-exists: Root with specified name already exists.', { name: rootName });\n\t\t\t}\n\n\t\t\tvar root = new _rootelement2.default(this, elementName, rootName);\n\t\t\tthis.roots.set(rootName, root);\n\n\t\t\treturn root;\n\t\t}\n\n\t\t/**\n   * Removes all events listeners set by document instance.\n   */\n\n\t}, {\n\t\tkey: 'destroy',\n\t\tvalue: function destroy() {\n\t\t\tthis.selection.destroy();\n\t\t\tthis.stopListening();\n\t\t}\n\n\t\t/**\n   * Enqueues document changes. Any changes to be done on document (mostly using {@link #batch}\n   * should be placed in the queued callback. If no other plugin is changing document at the moment, the callback will be\n   * called immediately. Otherwise it will wait for all previously queued changes to finish happening. This way\n   * queued callback will not interrupt other callbacks.\n   *\n   * When all queued changes are done {@link #event:changesDone} event is fired.\n   *\n   * @fires changesDone\n   * @param {Function} callback Callback to enqueue.\n   */\n\n\t}, {\n\t\tkey: 'enqueueChanges',\n\t\tvalue: function enqueueChanges(callback) {\n\t\t\tthis._pendingChanges.push(callback);\n\n\t\t\tif (this._pendingChanges.length == 1) {\n\t\t\t\twhile (this._pendingChanges.length) {\n\t\t\t\t\tthis._pendingChanges[0]();\n\t\t\t\t\tthis._pendingChanges.shift();\n\t\t\t\t}\n\n\t\t\t\tthis.fire('changesDone');\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Returns top-level root by its name.\n   *\n   * @param {String} [name='main'] Unique root name.\n   * @returns {module:engine/model/rootelement~RootElement} Root registered under given name.\n   */\n\n\t}, {\n\t\tkey: 'getRoot',\n\t\tvalue: function getRoot() {\n\t\t\tvar name = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 'main';\n\n\t\t\tif (!this.roots.has(name)) {\n\t\t\t\t/**\n     * Root with specified name does not exist.\n     *\n     * @error document-getRoot-root-not-exist\n     * @param {String} name\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('model-document-getRoot-root-not-exist: Root with specified name does not exist.', { name: name });\n\t\t\t}\n\n\t\t\treturn this.roots.get(name);\n\t\t}\n\n\t\t/**\n   * Checks if root with given name is defined.\n   *\n   * @param {String} name Name of root to check.\n   * @returns {Boolean}\n   */\n\n\t}, {\n\t\tkey: 'hasRoot',\n\t\tvalue: function hasRoot(name) {\n\t\t\treturn this.roots.has(name);\n\t\t}\n\n\t\t/**\n   * Returns array with names of all roots (without the {@link #graveyard}) added to the document.\n   *\n   * @returns {Array.<String>} Roots names.\n   */\n\n\t}, {\n\t\tkey: 'getRootNames',\n\t\tvalue: function getRootNames() {\n\t\t\treturn Array.from(this.roots.keys()).filter(function (name) {\n\t\t\t\treturn name != graveyardName;\n\t\t\t});\n\t\t}\n\n\t\t/**\n   * Basing on given `position`, finds and returns a {@link module:engine/model/range~Range Range} instance that is\n   * nearest to that `position` and is a correct range for selection.\n   *\n   * Correct selection range might be collapsed - when it's located in position where text node can be placed.\n   * Non-collapsed range is returned when selection can be placed around element marked as \"object\" in\n   * {@link module:engine/model/schema~Schema schema}.\n   *\n   * Direction of searching for nearest correct selection range can be specified as:\n   * * `both` - searching will be performed in both ways,\n   * * `forward` - searching will be performed only forward,\n   * * `backward` - searching will be performed only backward.\n   *\n   * When valid selection range cannot be found, `null` is returned.\n   *\n   * @param {module:engine/model/position~Position} position Reference position where new selection range should be looked for.\n   * @param {'both'|'forward'|'backward'} [direction='both'] Search direction.\n   * @returns {module:engine/model/range~Range|null} Nearest selection range or `null` if one cannot be found.\n   */\n\n\t}, {\n\t\tkey: 'getNearestSelectionRange',\n\t\tvalue: function getNearestSelectionRange(position) {\n\t\t\tvar direction = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 'both';\n\n\t\t\t// Return collapsed range if provided position is valid.\n\t\t\tif (this.schema.check({ name: '$text', inside: position })) {\n\t\t\t\treturn new _range2.default(position);\n\t\t\t}\n\n\t\t\tvar backwardWalker = void 0;\n\t\t\tvar forwardWalker = void 0;\n\n\t\t\tif (direction == 'both' || direction == 'backward') {\n\t\t\t\tbackwardWalker = new _treewalker2.default({ startPosition: position, direction: 'backward' });\n\t\t\t}\n\n\t\t\tif (direction == 'both' || direction == 'forward') {\n\t\t\t\tforwardWalker = new _treewalker2.default({ startPosition: position });\n\t\t\t}\n\n\t\t\tvar _iteratorNormalCompletion2 = true;\n\t\t\tvar _didIteratorError2 = false;\n\t\t\tvar _iteratorError2 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator2 = combineWalkers(backwardWalker, forwardWalker)[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {\n\t\t\t\t\tvar data = _step2.value;\n\n\t\t\t\t\tvar type = data.walker == backwardWalker ? 'elementEnd' : 'elementStart';\n\t\t\t\t\tvar value = data.value;\n\n\t\t\t\t\tif (value.type == type && this.schema.objects.has(value.item.name)) {\n\t\t\t\t\t\treturn _range2.default.createOn(value.item);\n\t\t\t\t\t}\n\n\t\t\t\t\tif (this.schema.check({ name: '$text', inside: value.nextPosition })) {\n\t\t\t\t\t\treturn new _range2.default(value.nextPosition);\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError2 = true;\n\t\t\t\t_iteratorError2 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion2 && _iterator2.return) {\n\t\t\t\t\t\t_iterator2.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError2) {\n\t\t\t\t\t\tthrow _iteratorError2;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn null;\n\t\t}\n\n\t\t/**\n   * Custom toJSON method to solve child-parent circular dependencies.\n   *\n   * @returns {Object} Clone of this object with the document property changed to string.\n   */\n\n\t}, {\n\t\tkey: 'toJSON',\n\t\tvalue: function toJSON() {\n\t\t\tvar json = (0, _clone2.default)(this);\n\n\t\t\t// Due to circular references we need to remove parent reference.\n\t\t\tjson.selection = '[engine.model.LiveSelection]';\n\n\t\t\treturn json;\n\t\t}\n\n\t\t/**\n   * Returns default root for this document which is either the first root that was added to the the document using\n   * {@link #createRoot} or the {@link #graveyard graveyard root} if no other roots were created.\n   *\n   * @protected\n   * @returns {module:engine/model/rootelement~RootElement} The default root for this document.\n   */\n\n\t}, {\n\t\tkey: '_getDefaultRoot',\n\t\tvalue: function _getDefaultRoot() {\n\t\t\tvar _iteratorNormalCompletion3 = true;\n\t\t\tvar _didIteratorError3 = false;\n\t\t\tvar _iteratorError3 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator3 = this.roots.values()[Symbol.iterator](), _step3; !(_iteratorNormalCompletion3 = (_step3 = _iterator3.next()).done); _iteratorNormalCompletion3 = true) {\n\t\t\t\t\tvar root = _step3.value;\n\n\t\t\t\t\tif (root !== this.graveyard) {\n\t\t\t\t\t\treturn root;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError3 = true;\n\t\t\t\t_iteratorError3 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion3 && _iterator3.return) {\n\t\t\t\t\t\t_iterator3.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError3) {\n\t\t\t\t\t\tthrow _iteratorError3;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn this.graveyard;\n\t\t}\n\n\t\t/**\n   * Returns a default range for this selection. The default range is a collapsed range that starts and ends\n   * at the beginning of this selection's document's {@link #_getDefaultRoot default root}.\n   *\n   * @protected\n   * @returns {module:engine/model/range~Range}\n   */\n\n\t}, {\n\t\tkey: '_getDefaultRange',\n\t\tvalue: function _getDefaultRange() {\n\t\t\tvar defaultRoot = this._getDefaultRoot();\n\n\t\t\t// Find the first position where the selection can be put.\n\t\t\tvar position = new _position2.default(defaultRoot, [0]);\n\t\t\tvar nearestRange = this.getNearestSelectionRange(position);\n\n\t\t\t// If valid selection range is not found - return range collapsed at the beginning of the root.\n\t\t\treturn nearestRange || new _range2.default(position);\n\t\t}\n\n\t\t/**\n   * Checks whether given {@link module:engine/model/range~Range range} is a valid range for\n   * {@link #selection document's selection}.\n   *\n   * @private\n   * @param {module:engine/model/range~Range} range Range to check.\n   * @returns {Boolean} `true` if `range` is valid, `false` otherwise.\n   */\n\n\t}, {\n\t\tkey: '_validateSelectionRange',\n\t\tvalue: function _validateSelectionRange(range) {\n\t\t\treturn validateTextNodePosition(range.start) && validateTextNodePosition(range.end);\n\t\t}\n\n\t\t/**\n   * Fired when document changes by applying an operation.\n   *\n   * There are 5 types of change:\n   *\n   * * 'insert' when nodes are inserted,\n   * * 'remove' when nodes are removed,\n   * * 'reinsert' when remove is undone,\n   * * 'move' when nodes are moved,\n   * * 'addAttribute' when attributes are added,\n   * * 'removeAttribute' when attributes are removed,\n   * * 'changeAttribute' when attributes change,\n   * * 'addRootAttribute' when attribute for root is added,\n   * * 'removeRootAttribute' when attribute for root is removed,\n   * * 'changeRootAttribute' when attribute for root changes.\n   *\n   * @event change\n   * @param {String} type Change type, possible option: 'insert', 'remove', 'reinsert', 'move', 'attribute'.\n   * @param {Object} data Additional information about the change.\n   * @param {module:engine/model/range~Range} data.range Range in model containing changed nodes. Note that the range state is\n   * after changes has been done, i.e. for 'remove' the range will be in the {@link #graveyard graveyard root}.\n   * This is `undefined` for \"...root...\" types.\n   * @param {module:engine/model/position~Position} [data.sourcePosition] Change source position.\n   * Exists for 'remove', 'reinsert' and 'move'.\n   * Note that this position state is before changes has been done, i.e. for 'reinsert' the source position will be in the\n   * {@link #graveyard graveyard root}.\n   * @param {String} [data.key] Only for attribute types. Key of changed / inserted / removed attribute.\n   * @param {*} [data.oldValue] Only for 'removeAttribute', 'removeRootAttribute', 'changeAttribute' or\n   * 'changeRootAttribute' type.\n   * @param {*} [data.newValue] Only for 'addAttribute', 'addRootAttribute', 'changeAttribute' or\n   * 'changeRootAttribute' type.\n   * @param {module:engine/model/rootelement~RootElement} [changeInfo.root] Root element which attributes got changed. This is defined\n   * only for root types.\n   * @param {module:engine/model/batch~Batch} batch A {@link module:engine/model/batch~Batch batch}\n   * of changes which this change is a part of.\n   */\n\n\t\t/**\n   * Fired when all queued document changes are done. See {@link #enqueueChanges}.\n   *\n   * @event changesDone\n   */\n\n\t}, {\n\t\tkey: 'graveyard',\n\t\tget: function get() {\n\t\t\treturn this.getRoot(graveyardName);\n\t\t}\n\t}]);\n\n\treturn Document;\n}();\n\nexports.default = Document;\n\n\n(0, _mix2.default)(Document, _emittermixin2.default);\n\n// Checks whether given range boundary position is valid for document selection, meaning that is not between\n// unicode surrogate pairs or base character and combining marks.\nfunction validateTextNodePosition(rangeBoundary) {\n\tvar textNode = rangeBoundary.textNode;\n\n\tif (textNode) {\n\t\tvar data = textNode.data;\n\t\tvar offset = rangeBoundary.offset - textNode.startOffset;\n\n\t\treturn !(0, _unicode.isInsideSurrogatePair)(data, offset) && !(0, _unicode.isInsideCombinedSymbol)(data, offset);\n\t}\n\n\treturn true;\n}\n\n// Generator function returning values from provided walkers, switching between them at each iteration. If only one walker\n// is provided it will return data only from that walker.\n//\n// @param {module:engine/module/treewalker~TreeWalker} [backward] Walker iterating in backward direction.\n// @param {module:engine/module/treewalker~TreeWalker} [forward] Walker iterating in forward direction.\n// @returns {Iterable.<Object>} Object returned at each iteration contains `value` and `walker` (informing which walker returned\n// given value) fields.\nfunction combineWalkers(backward, forward) {\n\tvar done, step, _step4;\n\n\treturn regeneratorRuntime.wrap(function combineWalkers$(_context) {\n\t\twhile (1) {\n\t\t\tswitch (_context.prev = _context.next) {\n\t\t\t\tcase 0:\n\t\t\t\t\tdone = false;\n\n\t\t\t\tcase 1:\n\t\t\t\t\tif (done) {\n\t\t\t\t\t\t_context.next = 17;\n\t\t\t\t\t\tbreak;\n\t\t\t\t\t}\n\n\t\t\t\t\tdone = true;\n\n\t\t\t\t\tif (!backward) {\n\t\t\t\t\t\t_context.next = 9;\n\t\t\t\t\t\tbreak;\n\t\t\t\t\t}\n\n\t\t\t\t\tstep = backward.next();\n\n\t\t\t\t\tif (step.done) {\n\t\t\t\t\t\t_context.next = 9;\n\t\t\t\t\t\tbreak;\n\t\t\t\t\t}\n\n\t\t\t\t\tdone = false;\n\t\t\t\t\t_context.next = 9;\n\t\t\t\t\treturn {\n\t\t\t\t\t\twalker: backward,\n\t\t\t\t\t\tvalue: step.value\n\t\t\t\t\t};\n\n\t\t\t\tcase 9:\n\t\t\t\t\tif (!forward) {\n\t\t\t\t\t\t_context.next = 15;\n\t\t\t\t\t\tbreak;\n\t\t\t\t\t}\n\n\t\t\t\t\t_step4 = forward.next();\n\n\t\t\t\t\tif (_step4.done) {\n\t\t\t\t\t\t_context.next = 15;\n\t\t\t\t\t\tbreak;\n\t\t\t\t\t}\n\n\t\t\t\t\tdone = false;\n\t\t\t\t\t_context.next = 15;\n\t\t\t\t\treturn {\n\t\t\t\t\t\twalker: forward,\n\t\t\t\t\t\tvalue: _step4.value\n\t\t\t\t\t};\n\n\t\t\t\tcase 15:\n\t\t\t\t\t_context.next = 1;\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase 17:\n\t\t\t\tcase 'end':\n\t\t\t\t\treturn _context.stop();\n\t\t\t}\n\t\t}\n\t}, _marked[0], this);\n}\n\n/***/ }),\n/* 314 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module engine/model/history\n */\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _toConsumableArray(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } else { return Array.from(arr); } }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * `History` keeps the track of all the deltas applied to the {@link module:engine/model/document~Document document}. Deltas stored in\n * `History` might get updated, split into more deltas or even removed. This is used mostly to compress history, instead\n * of keeping all deltas in a state in which they were applied.\n *\n * **Note:** deltas kept in `History` should be used only to transform deltas. It's not advised to use `History` to get\n * original delta basing on it's {@link module:engine/model/delta/delta~Delta#baseVersion baseVersion}. Also, after transforming a\n * delta by deltas from `History`,\n * fix it's base version accordingly (set it to {@link module:engine/model/document~Document#version document version}).\n */\nvar History = function () {\n\t/**\n  * Creates an empty History instance.\n  */\n\tfunction History() {\n\t\t_classCallCheck(this, History);\n\n\t\t/**\n   * Deltas added to the history.\n   *\n   * @protected\n   * @member {Array.<module:engine/model/delta/delta~Delta>} module:engine/model/history~History#_deltas\n   */\n\t\tthis._deltas = [];\n\n\t\t/**\n   * Helper structure that maps added delta's base version to the index in {@link module:engine/model/history~History#_deltas}\n   * at which the delta was added.\n   *\n   * @protected\n   * @member {Map} module:engine/model/history~History#_historyPoints\n   */\n\t\tthis._historyPoints = new Map();\n\t}\n\n\t/**\n  * Adds delta to the history.\n  *\n  * @param {module:engine/model/delta/delta~Delta} delta Delta to add.\n  */\n\n\n\t_createClass(History, [{\n\t\tkey: 'addDelta',\n\t\tvalue: function addDelta(delta) {\n\t\t\tif (delta.operations.length > 0 && !this._historyPoints.has(delta.baseVersion)) {\n\t\t\t\tvar index = this._deltas.length;\n\n\t\t\t\tthis._deltas[index] = delta;\n\t\t\t\tthis._historyPoints.set(delta.baseVersion, index);\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Returns deltas added to the history.\n   *\n   * @param {Number} [from=0] Base version from which deltas should be returned (inclusive). Defaults to `0`, which means\n   * that deltas from the first one will be returned.\n   * @param {Number} [to=Number.POSITIVE_INFINITY] Base version up to which deltas should be returned (exclusive).\n   * Defaults to `Number.POSITIVE_INFINITY` which means that deltas up to the last one will be returned.\n   * @returns {Iterator.<module:engine/model/delta/delta~Delta>} Deltas added to the history.\n   */\n\n\t}, {\n\t\tkey: 'getDeltas',\n\t\tvalue: regeneratorRuntime.mark(function getDeltas() {\n\t\t\tvar from = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 0;\n\t\t\tvar to = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : Number.POSITIVE_INFINITY;\n\t\t\tvar fromIndex, delta;\n\t\t\treturn regeneratorRuntime.wrap(function getDeltas$(_context) {\n\t\t\t\twhile (1) {\n\t\t\t\t\tswitch (_context.prev = _context.next) {\n\t\t\t\t\t\tcase 0:\n\t\t\t\t\t\t\tif (!(this._deltas.length === 0)) {\n\t\t\t\t\t\t\t\t_context.next = 2;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\treturn _context.abrupt('return');\n\n\t\t\t\t\t\tcase 2:\n\n\t\t\t\t\t\t\t// Will throw if base version is incorrect.\n\t\t\t\t\t\t\tfromIndex = this._getIndex(from);\n\n\t\t\t\t\t\t\t// Base version is too low or too high and is not found in history.\n\n\t\t\t\t\t\t\tif (!(fromIndex == -1)) {\n\t\t\t\t\t\t\t\t_context.next = 5;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\treturn _context.abrupt('return');\n\n\t\t\t\t\t\tcase 5:\n\t\t\t\t\t\t\tif (!(fromIndex < this._deltas.length)) {\n\t\t\t\t\t\t\t\t_context.next = 13;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\tdelta = this._deltas[fromIndex++];\n\n\t\t\t\t\t\t\tif (!(delta.baseVersion >= to)) {\n\t\t\t\t\t\t\t\t_context.next = 9;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\treturn _context.abrupt('break', 13);\n\n\t\t\t\t\t\tcase 9:\n\t\t\t\t\t\t\t_context.next = 11;\n\t\t\t\t\t\t\treturn delta;\n\n\t\t\t\t\t\tcase 11:\n\t\t\t\t\t\t\t_context.next = 5;\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase 13:\n\t\t\t\t\t\tcase 'end':\n\t\t\t\t\t\t\treturn _context.stop();\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}, getDeltas, this);\n\t\t})\n\n\t\t/**\n   * Returns one or more deltas from history that bases on given `baseVersion`. Most often it will be just\n   * one delta, but if that delta got updated by multiple deltas, all of those updated deltas will be returned.\n   *\n   * @see module:engine/model/history~History#updateDelta\n   * @param {Number} baseVersion Base version of the delta to retrieve.\n   * @returns {Array.<module:engine/model/delta/delta~Delta>|null} Delta with given base version or null if no such delta is in history.\n   */\n\n\t}, {\n\t\tkey: 'getDelta',\n\t\tvalue: function getDelta(baseVersion) {\n\t\t\tvar index = this._historyPoints.get(baseVersion);\n\n\t\t\tif (index === undefined) {\n\t\t\t\treturn null;\n\t\t\t}\n\n\t\t\tvar deltas = [];\n\n\t\t\tfor (index; index < this._deltas.length; index++) {\n\t\t\t\tvar delta = this._deltas[index];\n\n\t\t\t\tif (delta.baseVersion != baseVersion) {\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\n\t\t\t\tdeltas.push(delta);\n\t\t\t}\n\n\t\t\treturn deltas.length === 0 ? null : deltas;\n\t\t}\n\n\t\t/**\n   * Removes delta from the history. This happens i.e., when a delta is undone by another delta. Both undone delta and\n   * undoing delta should be removed so they won't have an impact on transforming other deltas.\n   *\n   * **Note:** using this method does not change the state of {@link module:engine/model/document~Document model}. It just affects\n   * the state of `History`.\n   *\n   * **Note:** when some deltas are removed, deltas between them should probably get updated. See\n   * {@link module:engine/model/history~History#updateDelta}.\n   *\n   * **Note:** if delta with `baseVersion` got {@link module:engine/model/history~History#updateDelta updated} by multiple\n   * deltas, all updated deltas will be removed.\n   *\n   * @param {Number} baseVersion Base version of a delta to be removed.\n   */\n\n\t}, {\n\t\tkey: 'removeDelta',\n\t\tvalue: function removeDelta(baseVersion) {\n\t\t\tthis.updateDelta(baseVersion, []);\n\t\t}\n\n\t\t/**\n   * Substitutes delta in history by one or more given deltas.\n   *\n   * **Note:** if delta with `baseVersion` was already updated by multiple deltas, all updated deltas will be removed\n   * and new deltas will be inserted at their position.\n   *\n   * **Note:** removed delta won't get updated.\n   *\n   * @param {Number} baseVersion Base version of a delta to update.\n   * @param {Iterable.<module:engine/model/delta/delta~Delta>} updatedDeltas Deltas to be inserted in place of updated delta.\n   */\n\n\t}, {\n\t\tkey: 'updateDelta',\n\t\tvalue: function updateDelta(baseVersion, updatedDeltas) {\n\t\t\tvar _deltas;\n\n\t\t\tvar deltas = this.getDelta(baseVersion);\n\n\t\t\t// If there are no deltas, stop executing function as there is nothing to update.\n\t\t\tif (deltas === null) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// Make sure that every updated delta has correct `baseVersion`.\n\t\t\t// This is crucial for algorithms in `History` and algorithms using `History`.\n\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\tvar _didIteratorError = false;\n\t\t\tvar _iteratorError = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator = updatedDeltas[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\tvar delta = _step.value;\n\n\t\t\t\t\tdelta.baseVersion = baseVersion;\n\t\t\t\t}\n\n\t\t\t\t// Put updated deltas in place of old deltas.\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError = true;\n\t\t\t\t_iteratorError = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t(_deltas = this._deltas).splice.apply(_deltas, [this._getIndex(baseVersion), deltas.length].concat(_toConsumableArray(updatedDeltas)));\n\n\t\t\t// Update history points.\n\t\t\tvar changeBy = updatedDeltas.length - deltas.length;\n\n\t\t\tvar _iteratorNormalCompletion2 = true;\n\t\t\tvar _didIteratorError2 = false;\n\t\t\tvar _iteratorError2 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator2 = this._historyPoints.keys()[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {\n\t\t\t\t\tvar key = _step2.value;\n\n\t\t\t\t\tif (key > baseVersion) {\n\t\t\t\t\t\tthis._historyPoints.set(key, this._historyPoints.get(key) + changeBy);\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError2 = true;\n\t\t\t\t_iteratorError2 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion2 && _iterator2.return) {\n\t\t\t\t\t\t_iterator2.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError2) {\n\t\t\t\t\t\tthrow _iteratorError2;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Gets an index in {@link module:engine/model/history~History#_deltas} where delta with given `baseVersion` is added.\n   *\n   * @private\n   * @param {Number} baseVersion Base version of delta.\n   */\n\n\t}, {\n\t\tkey: '_getIndex',\n\t\tvalue: function _getIndex(baseVersion) {\n\t\t\tvar index = this._historyPoints.get(baseVersion);\n\n\t\t\t// Base version not found - it is either too high or too low, or is in the middle of delta.\n\t\t\tif (index === undefined) {\n\t\t\t\tvar lastDelta = this._deltas[this._deltas.length - 1];\n\t\t\t\tvar nextBaseVersion = lastDelta.baseVersion + lastDelta.operations.length;\n\n\t\t\t\tif (baseVersion < 0 || baseVersion >= nextBaseVersion) {\n\t\t\t\t\t// Base version is too high or too low - it's acceptable situation.\n\t\t\t\t\t// Return -1 because `baseVersion` was correct.\n\t\t\t\t\treturn -1;\n\t\t\t\t}\n\n\t\t\t\t/**\n     * Given base version points to the middle of a delta.\n     *\n     * @error history-wrong-version\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('model-history-wrong-version: Given base version points to the middle of a delta.');\n\t\t\t}\n\n\t\t\treturn index;\n\t\t}\n\t}]);\n\n\treturn History;\n}();\n\nexports.default = History;\n\n/***/ }),\n/* 315 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _slicedToArray = function () { function sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i[\"return\"]) _i[\"return\"](); } finally { if (_d) throw _e; } } return _arr; } return function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return sliceIterator(arr, i); } else { throw new TypeError(\"Invalid attempt to destructure non-iterable instance\"); } }; }();\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if (\"value\" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };\n\nvar _position = __webpack_require__(1);\n\nvar _position2 = _interopRequireDefault(_position);\n\nvar _range = __webpack_require__(3);\n\nvar _range2 = _interopRequireDefault(_range);\n\nvar _liverange = __webpack_require__(110);\n\nvar _liverange2 = _interopRequireDefault(_liverange);\n\nvar _text = __webpack_require__(23);\n\nvar _text2 = _interopRequireDefault(_text);\n\nvar _textproxy = __webpack_require__(56);\n\nvar _textproxy2 = _interopRequireDefault(_textproxy);\n\nvar _tomap = __webpack_require__(152);\n\nvar _tomap2 = _interopRequireDefault(_tomap);\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nvar _log = __webpack_require__(54);\n\nvar _log2 = _interopRequireDefault(_log);\n\nvar _selection = __webpack_require__(72);\n\nvar _selection2 = _interopRequireDefault(_selection);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module engine/model/liveselection\n */\n\nvar storePrefix = 'selection:';\n\nvar attrOpTypes = new Set(['addAttribute', 'removeAttribute', 'changeAttribute', 'addRootAttribute', 'removeRootAttribute', 'changeRootAttribute']);\n\n/**\n * `LiveSelection` is a type of {@link module:engine/model/selection~Selection selection} that listens to changes on a\n * {@link module:engine/model/document~Document document} and has it ranges updated accordingly. Internal implementation of this\n * mechanism bases on {@link module:engine/model/liverange~LiveRange live ranges}.\n *\n * Differences between {@link module:engine/model/selection~Selection} and `LiveSelection` are:\n * * there is always a range in `LiveSelection` - even if no ranges were added there is a\n * {@link module:engine/model/liveselection~LiveSelection#_getDefaultRange \"default range\"} present in the selection,\n * * ranges added to this selection updates automatically when the document changes,\n * * attributes of `LiveSelection` are updated automatically according to selection ranges.\n *\n * Since `LiveSelection` uses {@link module:engine/model/liverange~LiveRange live ranges}\n * and is updated when {@link module:engine/model/document~Document document}\n * changes, it cannot be set on {@link module:engine/model/node~Node nodes}\n * that are inside {@link module:engine/model/documentfragment~DocumentFragment document fragment}.\n * If you need to represent a selection in document fragment,\n * use {@link module:engine/model/selection~Selection Selection class} instead.\n *\n * @extends module:engine/model/selection~Selection\n */\n\nvar LiveSelection = function (_Selection) {\n\t_inherits(LiveSelection, _Selection);\n\n\t/**\n  * Creates an empty live selection for given {@link module:engine/model/document~Document}.\n  *\n  * @param {module:engine/model/document~Document} document Document which owns this selection.\n  */\n\tfunction LiveSelection(document) {\n\t\t_classCallCheck(this, LiveSelection);\n\n\t\t/**\n   * Document which owns this selection.\n   *\n   * @protected\n   * @member {module:engine/model/document~Document} module:engine/model/liveselection~LiveSelection#_document\n   */\n\t\tvar _this = _possibleConstructorReturn(this, (LiveSelection.__proto__ || Object.getPrototypeOf(LiveSelection)).call(this));\n\n\t\t_this._document = document;\n\n\t\t/**\n   * Keeps mapping of attribute name to priority with which the attribute got modified (added/changed/removed)\n   * last time. Possible values of priority are: `'low'` and `'normal'`.\n   *\n   * Priorities are used by internal `LiveSelection` mechanisms. All attributes set using `LiveSelection`\n   * attributes API are set with `'normal'` priority.\n   *\n   * @private\n   * @member {Map} module:engine/model/liveselection~LiveSelection#_attributePriority\n   */\n\t\t_this._attributePriority = new Map();\n\n\t\t// Whenever attribute operation is performed on document, update selection attributes.\n\t\t// This is not the most efficient way to update selection attributes, but should be okay for now.\n\t\t_this.listenTo(_this._document, 'change', function (evt, type) {\n\t\t\tif (attrOpTypes.has(type)) {\n\t\t\t\t_this._updateAttributes(false);\n\t\t\t}\n\t\t});\n\t\treturn _this;\n\t}\n\n\t/**\n  * @inheritDoc\n  */\n\n\n\t_createClass(LiveSelection, [{\n\t\tkey: 'destroy',\n\n\n\t\t/**\n   * Unbinds all events previously bound by document selection.\n   */\n\t\tvalue: function destroy() {\n\t\t\tfor (var i = 0; i < this._ranges.length; i++) {\n\t\t\t\tthis._ranges[i].detach();\n\t\t\t}\n\n\t\t\tthis.stopListening();\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: 'getRanges',\n\t\tvalue: regeneratorRuntime.mark(function getRanges() {\n\t\t\treturn regeneratorRuntime.wrap(function getRanges$(_context) {\n\t\t\t\twhile (1) {\n\t\t\t\t\tswitch (_context.prev = _context.next) {\n\t\t\t\t\t\tcase 0:\n\t\t\t\t\t\t\tif (!this._ranges.length) {\n\t\t\t\t\t\t\t\t_context.next = 4;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\treturn _context.delegateYield(_get(LiveSelection.prototype.__proto__ || Object.getPrototypeOf(LiveSelection.prototype), 'getRanges', this).call(this), 't0', 2);\n\n\t\t\t\t\t\tcase 2:\n\t\t\t\t\t\t\t_context.next = 6;\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase 4:\n\t\t\t\t\t\t\t_context.next = 6;\n\t\t\t\t\t\t\treturn this._document._getDefaultRange();\n\n\t\t\t\t\t\tcase 6:\n\t\t\t\t\t\tcase 'end':\n\t\t\t\t\t\t\treturn _context.stop();\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}, getRanges, this);\n\t\t})\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: 'getFirstRange',\n\t\tvalue: function getFirstRange() {\n\t\t\treturn _get(LiveSelection.prototype.__proto__ || Object.getPrototypeOf(LiveSelection.prototype), 'getFirstRange', this).call(this) || this._document._getDefaultRange();\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: 'getLastRange',\n\t\tvalue: function getLastRange() {\n\t\t\treturn _get(LiveSelection.prototype.__proto__ || Object.getPrototypeOf(LiveSelection.prototype), 'getLastRange', this).call(this) || this._document._getDefaultRange();\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: 'addRange',\n\t\tvalue: function addRange(range) {\n\t\t\tvar isBackward = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;\n\n\t\t\t_get(LiveSelection.prototype.__proto__ || Object.getPrototypeOf(LiveSelection.prototype), 'addRange', this).call(this, range, isBackward);\n\t\t\tthis.refreshAttributes();\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: 'removeAllRanges',\n\t\tvalue: function removeAllRanges() {\n\t\t\t_get(LiveSelection.prototype.__proto__ || Object.getPrototypeOf(LiveSelection.prototype), 'removeAllRanges', this).call(this);\n\t\t\tthis.refreshAttributes();\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: 'setRanges',\n\t\tvalue: function setRanges(newRanges) {\n\t\t\tvar isLastBackward = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;\n\n\t\t\t_get(LiveSelection.prototype.__proto__ || Object.getPrototypeOf(LiveSelection.prototype), 'setRanges', this).call(this, newRanges, isLastBackward);\n\t\t\tthis.refreshAttributes();\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: 'setAttribute',\n\t\tvalue: function setAttribute(key, value) {\n\t\t\t// Store attribute in parent element if the selection is collapsed in an empty node.\n\t\t\tif (this.isCollapsed && this.anchor.parent.childCount === 0) {\n\t\t\t\tthis._storeAttribute(key, value);\n\t\t\t}\n\n\t\t\tif (this._setAttribute(key, value)) {\n\t\t\t\t// Fire event with exact data.\n\t\t\t\tvar attributeKeys = [key];\n\t\t\t\tthis.fire('change:attribute', { attributeKeys: attributeKeys, directChange: true });\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: 'removeAttribute',\n\t\tvalue: function removeAttribute(key) {\n\t\t\t// Remove stored attribute from parent element if the selection is collapsed in an empty node.\n\t\t\tif (this.isCollapsed && this.anchor.parent.childCount === 0) {\n\t\t\t\tthis._removeStoredAttribute(key);\n\t\t\t}\n\n\t\t\tif (this._removeAttribute(key)) {\n\t\t\t\t// Fire event with exact data.\n\t\t\t\tvar attributeKeys = [key];\n\t\t\t\tthis.fire('change:attribute', { attributeKeys: attributeKeys, directChange: true });\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: 'setAttributesTo',\n\t\tvalue: function setAttributesTo(attrs) {\n\t\t\tattrs = (0, _tomap2.default)(attrs);\n\n\t\t\tif (this.isCollapsed && this.anchor.parent.childCount === 0) {\n\t\t\t\tthis._setStoredAttributesTo(attrs);\n\t\t\t}\n\n\t\t\tvar changed = this._setAttributesTo(attrs);\n\n\t\t\tif (changed.size > 0) {\n\t\t\t\t// Fire event with exact data (fire only if anything changed).\n\t\t\t\tvar attributeKeys = Array.from(changed);\n\t\t\t\tthis.fire('change:attribute', { attributeKeys: attributeKeys, directChange: true });\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: 'clearAttributes',\n\t\tvalue: function clearAttributes() {\n\t\t\tthis.setAttributesTo([]);\n\t\t}\n\n\t\t/**\n   * Removes all attributes from the selection and sets attributes according to the surrounding nodes.\n   */\n\n\t}, {\n\t\tkey: 'refreshAttributes',\n\t\tvalue: function refreshAttributes() {\n\t\t\tthis._updateAttributes(true);\n\t\t}\n\n\t\t/**\n   * Creates and returns an instance of `LiveSelection` that is a clone of given selection, meaning that it has same\n   * ranges and same direction as this selection.\n   *\n   * @params {module:engine/model/selection~Selection} otherSelection Selection to be cloned.\n   * @returns {module:engine/model/liveselection~LiveSelection} `Selection` instance that is a clone of given selection.\n   */\n\n\t}, {\n\t\tkey: '_popRange',\n\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tvalue: function _popRange() {\n\t\t\tthis._ranges.pop().detach();\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: '_pushRange',\n\t\tvalue: function _pushRange(range) {\n\t\t\tvar liveRange = this._prepareRange(range);\n\n\t\t\t// `undefined` is returned when given `range` is in graveyard root.\n\t\t\tif (liveRange) {\n\t\t\t\tthis._ranges.push(liveRange);\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Prepares given range to be added to selection. Checks if it is correct,\n   * converts it to {@link module:engine/model/liverange~LiveRange LiveRange}\n   * and sets listeners listening to the range's change event.\n   *\n   * @private\n   * @param {module:engine/model/range~Range} range\n   */\n\n\t}, {\n\t\tkey: '_prepareRange',\n\t\tvalue: function _prepareRange(range) {\n\t\t\tvar _this2 = this;\n\n\t\t\tif (!(range instanceof _range2.default)) {\n\t\t\t\t/**\n     * Trying to add an object that is not an instance of Range.\n     *\n     * @error model-selection-added-not-range\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('model-selection-added-not-range: Trying to add an object that is not an instance of Range.');\n\t\t\t}\n\n\t\t\tif (range.root == this._document.graveyard) {\n\t\t\t\t/**\n     * Trying to add a Range that is in the graveyard root. Range rejected.\n     *\n     * @warning model-selection-range-in-graveyard\n     */\n\t\t\t\t_log2.default.warn('model-selection-range-in-graveyard: Trying to add a Range that is in the graveyard root. Range rejected.');\n\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tthis._checkRange(range);\n\n\t\t\tvar liveRange = _liverange2.default.createFromRange(range);\n\t\t\tthis.listenTo(liveRange, 'change', function (evt, oldRange) {\n\t\t\t\tif (liveRange.root == _this2._document.graveyard) {\n\t\t\t\t\t_this2._fixGraveyardSelection(liveRange, oldRange);\n\t\t\t\t}\n\n\t\t\t\t_this2.fire('change:range', { directChange: false });\n\t\t\t});\n\n\t\t\treturn liveRange;\n\t\t}\n\n\t\t/**\n   * Updates this selection attributes according to its ranges and the {@link module:engine/model/document~Document model document}.\n   *\n   * @protected\n   * @param {Boolean} clearAll\n   * @fires change:attribute\n   */\n\n\t}, {\n\t\tkey: '_updateAttributes',\n\t\tvalue: function _updateAttributes(clearAll) {\n\t\t\tvar newAttributes = (0, _tomap2.default)(this._getSurroundingAttributes());\n\t\t\tvar oldAttributes = (0, _tomap2.default)(this.getAttributes());\n\n\t\t\tif (clearAll) {\n\t\t\t\t// If `clearAll` remove all attributes and reset priorities.\n\t\t\t\tthis._attributePriority = new Map();\n\t\t\t\tthis._attrs = new Map();\n\t\t\t} else {\n\t\t\t\t// If not, remove only attributes added with `low` priority.\n\t\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\t\tvar _didIteratorError = false;\n\t\t\t\tvar _iteratorError = undefined;\n\n\t\t\t\ttry {\n\t\t\t\t\tfor (var _iterator = this._attributePriority[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\t\tvar _step$value = _slicedToArray(_step.value, 2),\n\t\t\t\t\t\t    key = _step$value[0],\n\t\t\t\t\t\t    priority = _step$value[1];\n\n\t\t\t\t\t\tif (priority == 'low') {\n\t\t\t\t\t\t\tthis._attrs.delete(key);\n\t\t\t\t\t\t\tthis._attributePriority.delete(key);\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t} catch (err) {\n\t\t\t\t\t_didIteratorError = true;\n\t\t\t\t\t_iteratorError = err;\n\t\t\t\t} finally {\n\t\t\t\t\ttry {\n\t\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t\t}\n\t\t\t\t\t} finally {\n\t\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tthis._setAttributesTo(newAttributes, false);\n\n\t\t\t// Let's evaluate which attributes really changed.\n\t\t\tvar changed = [];\n\n\t\t\t// First, loop through all attributes that are set on selection right now.\n\t\t\t// Check which of them are different than old attributes.\n\t\t\tvar _iteratorNormalCompletion2 = true;\n\t\t\tvar _didIteratorError2 = false;\n\t\t\tvar _iteratorError2 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator2 = this.getAttributes()[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {\n\t\t\t\t\tvar _step2$value = _slicedToArray(_step2.value, 2),\n\t\t\t\t\t    newKey = _step2$value[0],\n\t\t\t\t\t    newValue = _step2$value[1];\n\n\t\t\t\t\tif (!oldAttributes.has(newKey) || oldAttributes.get(newKey) !== newValue) {\n\t\t\t\t\t\tchanged.push(newKey);\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\t// Then, check which of old attributes got removed.\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError2 = true;\n\t\t\t\t_iteratorError2 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion2 && _iterator2.return) {\n\t\t\t\t\t\t_iterator2.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError2) {\n\t\t\t\t\t\tthrow _iteratorError2;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tvar _iteratorNormalCompletion3 = true;\n\t\t\tvar _didIteratorError3 = false;\n\t\t\tvar _iteratorError3 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator3 = oldAttributes[Symbol.iterator](), _step3; !(_iteratorNormalCompletion3 = (_step3 = _iterator3.next()).done); _iteratorNormalCompletion3 = true) {\n\t\t\t\t\tvar _step3$value = _slicedToArray(_step3.value, 1),\n\t\t\t\t\t    oldKey = _step3$value[0];\n\n\t\t\t\t\tif (!this.hasAttribute(oldKey)) {\n\t\t\t\t\t\tchanged.push(oldKey);\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\t// Fire event with exact data (fire only if anything changed).\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError3 = true;\n\t\t\t\t_iteratorError3 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion3 && _iterator3.return) {\n\t\t\t\t\t\t_iterator3.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError3) {\n\t\t\t\t\t\tthrow _iteratorError3;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tif (changed.length > 0) {\n\t\t\t\tthis.fire('change:attribute', { attributeKeys: changed, directChange: false });\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Generates and returns an attribute key for selection attributes store, basing on original attribute key.\n   *\n   * @protected\n   * @param {String} key Attribute key to convert.\n   * @returns {String} Converted attribute key, applicable for selection store.\n   */\n\n\t}, {\n\t\tkey: '_setAttribute',\n\n\n\t\t/**\n   * Internal method for setting `LiveSelection` attribute. Supports attribute priorities (through `directChange`\n   * parameter).\n   *\n   * @private\n   * @param {String} key Attribute key.\n   * @param {*} value Attribute value.\n   * @param {Boolean} [directChange=true] `true` if the change is caused by `Selection` API, `false` if change\n   * is caused by `Batch` API.\n   * @returns {Boolean} Whether value has changed.\n   */\n\t\tvalue: function _setAttribute(key, value) {\n\t\t\tvar directChange = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : true;\n\n\t\t\tvar priority = directChange ? 'normal' : 'low';\n\n\t\t\tif (priority == 'low' && this._attributePriority.get(key) == 'normal') {\n\t\t\t\t// Priority too low.\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\tvar oldValue = _get(LiveSelection.prototype.__proto__ || Object.getPrototypeOf(LiveSelection.prototype), 'getAttribute', this).call(this, key);\n\n\t\t\t// Don't do anything if value has not changed.\n\t\t\tif (oldValue === value) {\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\tthis._attrs.set(key, value);\n\n\t\t\t// Update priorities map.\n\t\t\tthis._attributePriority.set(key, priority);\n\n\t\t\treturn true;\n\t\t}\n\n\t\t/**\n   * Internal method for removing `LiveSelection` attribute. Supports attribute priorities (through `directChange`\n   * parameter).\n   *\n   * @private\n   * @param {String} key Attribute key.\n   * @param {Boolean} [directChange=true] `true` if the change is caused by `Selection` API, `false` if change\n   * is caused by `Batch` API.\n   * @returns {Boolean} Whether attribute was removed. May not be true if such attributes didn't exist or the\n   * existing attribute had higher priority.\n   */\n\n\t}, {\n\t\tkey: '_removeAttribute',\n\t\tvalue: function _removeAttribute(key) {\n\t\t\tvar directChange = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : true;\n\n\t\t\tvar priority = directChange ? 'normal' : 'low';\n\n\t\t\tif (priority == 'low' && this._attributePriority.get(key) == 'normal') {\n\t\t\t\t// Priority too low.\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\t// Don't do anything if value has not changed.\n\t\t\tif (!_get(LiveSelection.prototype.__proto__ || Object.getPrototypeOf(LiveSelection.prototype), 'hasAttribute', this).call(this, key)) {\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\tthis._attrs.delete(key);\n\n\t\t\t// Update priorities map.\n\t\t\tthis._attributePriority.set(key, priority);\n\n\t\t\treturn true;\n\t\t}\n\n\t\t/**\n   * Internal method for setting multiple `LiveSelection` attributes. Supports attribute priorities (through\n   * `directChange` parameter).\n   *\n   * @private\n   * @param {Iterable|Object} attrs Iterable object containing attributes to be set.\n   * @param {Boolean} [directChange=true] `true` if the change is caused by `Selection` API, `false` if change\n   * is caused by `Batch` API.\n   * @returns {Set.<String>} Changed attribute keys.\n   */\n\n\t}, {\n\t\tkey: '_setAttributesTo',\n\t\tvalue: function _setAttributesTo(attrs) {\n\t\t\tvar directChange = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : true;\n\n\t\t\tvar changed = new Set();\n\n\t\t\tvar _iteratorNormalCompletion4 = true;\n\t\t\tvar _didIteratorError4 = false;\n\t\t\tvar _iteratorError4 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator4 = this.getAttributes()[Symbol.iterator](), _step4; !(_iteratorNormalCompletion4 = (_step4 = _iterator4.next()).done); _iteratorNormalCompletion4 = true) {\n\t\t\t\t\tvar _step4$value = _slicedToArray(_step4.value, 2),\n\t\t\t\t\t    oldKey = _step4$value[0],\n\t\t\t\t\t    oldValue = _step4$value[1];\n\n\t\t\t\t\t// Do not remove attribute if attribute with same key and value is about to be set.\n\t\t\t\t\tif (attrs.get(oldKey) === oldValue) {\n\t\t\t\t\t\tcontinue;\n\t\t\t\t\t}\n\n\t\t\t\t\t// Attribute still might not get removed because of priorities.\n\t\t\t\t\tif (this._removeAttribute(oldKey, directChange)) {\n\t\t\t\t\t\tchanged.add(oldKey);\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError4 = true;\n\t\t\t\t_iteratorError4 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion4 && _iterator4.return) {\n\t\t\t\t\t\t_iterator4.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError4) {\n\t\t\t\t\t\tthrow _iteratorError4;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tvar _iteratorNormalCompletion5 = true;\n\t\t\tvar _didIteratorError5 = false;\n\t\t\tvar _iteratorError5 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator5 = attrs[Symbol.iterator](), _step5; !(_iteratorNormalCompletion5 = (_step5 = _iterator5.next()).done); _iteratorNormalCompletion5 = true) {\n\t\t\t\t\tvar _step5$value = _slicedToArray(_step5.value, 2),\n\t\t\t\t\t    key = _step5$value[0],\n\t\t\t\t\t    value = _step5$value[1];\n\n\t\t\t\t\t// Attribute may not be set because of attributes or because same key/value is already added.\n\t\t\t\t\tvar gotAdded = this._setAttribute(key, value, directChange);\n\n\t\t\t\t\tif (gotAdded) {\n\t\t\t\t\t\tchanged.add(key);\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError5 = true;\n\t\t\t\t_iteratorError5 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion5 && _iterator5.return) {\n\t\t\t\t\t\t_iterator5.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError5) {\n\t\t\t\t\t\tthrow _iteratorError5;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn changed;\n\t\t}\n\n\t\t/**\n   * Returns an iterator that iterates through all selection attributes stored in current selection's parent.\n   *\n   * @private\n   * @returns {Iterable.<*>}\n   */\n\n\t}, {\n\t\tkey: '_getStoredAttributes',\n\t\tvalue: regeneratorRuntime.mark(function _getStoredAttributes() {\n\t\t\tvar selectionParent, _iteratorNormalCompletion6, _didIteratorError6, _iteratorError6, _iterator6, _step6, key, realKey;\n\n\t\t\treturn regeneratorRuntime.wrap(function _getStoredAttributes$(_context2) {\n\t\t\t\twhile (1) {\n\t\t\t\t\tswitch (_context2.prev = _context2.next) {\n\t\t\t\t\t\tcase 0:\n\t\t\t\t\t\t\tselectionParent = this.getFirstPosition().parent;\n\n\t\t\t\t\t\t\tif (!(this.isCollapsed && selectionParent.childCount === 0)) {\n\t\t\t\t\t\t\t\t_context2.next = 30;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t_iteratorNormalCompletion6 = true;\n\t\t\t\t\t\t\t_didIteratorError6 = false;\n\t\t\t\t\t\t\t_iteratorError6 = undefined;\n\t\t\t\t\t\t\t_context2.prev = 5;\n\t\t\t\t\t\t\t_iterator6 = selectionParent.getAttributeKeys()[Symbol.iterator]();\n\n\t\t\t\t\t\tcase 7:\n\t\t\t\t\t\t\tif (_iteratorNormalCompletion6 = (_step6 = _iterator6.next()).done) {\n\t\t\t\t\t\t\t\t_context2.next = 16;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\tkey = _step6.value;\n\n\t\t\t\t\t\t\tif (!(key.indexOf(storePrefix) === 0)) {\n\t\t\t\t\t\t\t\t_context2.next = 13;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\trealKey = key.substr(storePrefix.length);\n\t\t\t\t\t\t\t_context2.next = 13;\n\t\t\t\t\t\t\treturn [realKey, selectionParent.getAttribute(key)];\n\n\t\t\t\t\t\tcase 13:\n\t\t\t\t\t\t\t_iteratorNormalCompletion6 = true;\n\t\t\t\t\t\t\t_context2.next = 7;\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase 16:\n\t\t\t\t\t\t\t_context2.next = 22;\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase 18:\n\t\t\t\t\t\t\t_context2.prev = 18;\n\t\t\t\t\t\t\t_context2.t0 = _context2['catch'](5);\n\t\t\t\t\t\t\t_didIteratorError6 = true;\n\t\t\t\t\t\t\t_iteratorError6 = _context2.t0;\n\n\t\t\t\t\t\tcase 22:\n\t\t\t\t\t\t\t_context2.prev = 22;\n\t\t\t\t\t\t\t_context2.prev = 23;\n\n\t\t\t\t\t\t\tif (!_iteratorNormalCompletion6 && _iterator6.return) {\n\t\t\t\t\t\t\t\t_iterator6.return();\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\tcase 25:\n\t\t\t\t\t\t\t_context2.prev = 25;\n\n\t\t\t\t\t\t\tif (!_didIteratorError6) {\n\t\t\t\t\t\t\t\t_context2.next = 28;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\tthrow _iteratorError6;\n\n\t\t\t\t\t\tcase 28:\n\t\t\t\t\t\t\treturn _context2.finish(25);\n\n\t\t\t\t\t\tcase 29:\n\t\t\t\t\t\t\treturn _context2.finish(22);\n\n\t\t\t\t\t\tcase 30:\n\t\t\t\t\t\tcase 'end':\n\t\t\t\t\t\t\treturn _context2.stop();\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}, _getStoredAttributes, this, [[5, 18, 22, 30], [23,, 25, 29]]);\n\t\t})\n\n\t\t/**\n   * Removes attribute with given key from attributes stored in current selection's parent node.\n   *\n   * @private\n   * @param {String} key Key of attribute to remove.\n   */\n\n\t}, {\n\t\tkey: '_removeStoredAttribute',\n\t\tvalue: function _removeStoredAttribute(key) {\n\t\t\tvar storeKey = LiveSelection._getStoreAttributeKey(key);\n\n\t\t\tthis._document.batch().removeAttribute(this.anchor.parent, storeKey);\n\t\t}\n\n\t\t/**\n   * Stores given attribute key and value in current selection's parent node.\n   *\n   * @private\n   * @param {String} key Key of attribute to set.\n   * @param {*} value Attribute value.\n   */\n\n\t}, {\n\t\tkey: '_storeAttribute',\n\t\tvalue: function _storeAttribute(key, value) {\n\t\t\tvar storeKey = LiveSelection._getStoreAttributeKey(key);\n\n\t\t\tthis._document.batch().setAttribute(this.anchor.parent, storeKey, value);\n\t\t}\n\n\t\t/**\n   * Sets selection attributes stored in current selection's parent node to given set of attributes.\n   *\n   * @private\n   * @param {Iterable|Object} attrs Iterable object containing attributes to be set.\n   */\n\n\t}, {\n\t\tkey: '_setStoredAttributesTo',\n\t\tvalue: function _setStoredAttributesTo(attrs) {\n\t\t\tvar selectionParent = this.anchor.parent;\n\t\t\tvar batch = this._document.batch();\n\n\t\t\tvar _iteratorNormalCompletion7 = true;\n\t\t\tvar _didIteratorError7 = false;\n\t\t\tvar _iteratorError7 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator7 = this._getStoredAttributes()[Symbol.iterator](), _step7; !(_iteratorNormalCompletion7 = (_step7 = _iterator7.next()).done); _iteratorNormalCompletion7 = true) {\n\t\t\t\t\tvar _step7$value = _slicedToArray(_step7.value, 1),\n\t\t\t\t\t    oldKey = _step7$value[0];\n\n\t\t\t\t\tvar storeKey = LiveSelection._getStoreAttributeKey(oldKey);\n\n\t\t\t\t\tbatch.removeAttribute(selectionParent, storeKey);\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError7 = true;\n\t\t\t\t_iteratorError7 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion7 && _iterator7.return) {\n\t\t\t\t\t\t_iterator7.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError7) {\n\t\t\t\t\t\tthrow _iteratorError7;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tvar _iteratorNormalCompletion8 = true;\n\t\t\tvar _didIteratorError8 = false;\n\t\t\tvar _iteratorError8 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator8 = attrs[Symbol.iterator](), _step8; !(_iteratorNormalCompletion8 = (_step8 = _iterator8.next()).done); _iteratorNormalCompletion8 = true) {\n\t\t\t\t\tvar _step8$value = _slicedToArray(_step8.value, 2),\n\t\t\t\t\t    key = _step8$value[0],\n\t\t\t\t\t    value = _step8$value[1];\n\n\t\t\t\t\tvar _storeKey = LiveSelection._getStoreAttributeKey(key);\n\n\t\t\t\t\tbatch.setAttribute(selectionParent, _storeKey, value);\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError8 = true;\n\t\t\t\t_iteratorError8 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion8 && _iterator8.return) {\n\t\t\t\t\t\t_iterator8.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError8) {\n\t\t\t\t\t\tthrow _iteratorError8;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Checks model text nodes that are closest to the selection's first position and returns attributes of first\n   * found element. If there are no text nodes in selection's first position parent, it returns selection\n   * attributes stored in that parent.\n   *\n   * @private\n   * @returns {Iterable.<*>} Collection of attributes.\n   */\n\n\t}, {\n\t\tkey: '_getSurroundingAttributes',\n\t\tvalue: function _getSurroundingAttributes() {\n\t\t\tvar position = this.getFirstPosition();\n\n\t\t\tvar attrs = null;\n\n\t\t\tif (!this.isCollapsed) {\n\t\t\t\t// 1. If selection is a range...\n\t\t\t\tvar range = this.getFirstRange();\n\n\t\t\t\t// ...look for a first character node in that range and take attributes from it.\n\t\t\t\tvar _iteratorNormalCompletion9 = true;\n\t\t\t\tvar _didIteratorError9 = false;\n\t\t\t\tvar _iteratorError9 = undefined;\n\n\t\t\t\ttry {\n\t\t\t\t\tfor (var _iterator9 = range[Symbol.iterator](), _step9; !(_iteratorNormalCompletion9 = (_step9 = _iterator9.next()).done); _iteratorNormalCompletion9 = true) {\n\t\t\t\t\t\tvar item = _step9.value;\n\n\t\t\t\t\t\t// This is not an optimal solution because of https://github.com/ckeditor/ckeditor5-engine/issues/454.\n\t\t\t\t\t\t// It can be done better by using `break;` instead of checking `attrs === null`.\n\t\t\t\t\t\tif (item.type == 'text' && attrs === null) {\n\t\t\t\t\t\t\tattrs = item.item.getAttributes();\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t} catch (err) {\n\t\t\t\t\t_didIteratorError9 = true;\n\t\t\t\t\t_iteratorError9 = err;\n\t\t\t\t} finally {\n\t\t\t\t\ttry {\n\t\t\t\t\t\tif (!_iteratorNormalCompletion9 && _iterator9.return) {\n\t\t\t\t\t\t\t_iterator9.return();\n\t\t\t\t\t\t}\n\t\t\t\t\t} finally {\n\t\t\t\t\t\tif (_didIteratorError9) {\n\t\t\t\t\t\t\tthrow _iteratorError9;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\t// 2. If the selection is a caret or the range does not contain a character node...\n\n\t\t\t\tvar nodeBefore = position.textNode ? position.textNode : position.nodeBefore;\n\t\t\t\tvar nodeAfter = position.textNode ? position.textNode : position.nodeAfter;\n\n\t\t\t\t// ...look at the node before caret and take attributes from it if it is a character node.\n\t\t\t\tattrs = getAttrsIfCharacter(nodeBefore);\n\n\t\t\t\t// 3. If not, look at the node after caret...\n\t\t\t\tif (!attrs) {\n\t\t\t\t\tattrs = getAttrsIfCharacter(nodeAfter);\n\t\t\t\t}\n\n\t\t\t\t// 4. If not, try to find the first character on the left, that is in the same node.\n\t\t\t\tif (!attrs) {\n\t\t\t\t\tvar node = nodeBefore;\n\n\t\t\t\t\twhile (node && !attrs) {\n\t\t\t\t\t\tnode = node.previousSibling;\n\t\t\t\t\t\tattrs = getAttrsIfCharacter(node);\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\t// 5. If not found, try to find the first character on the right, that is in the same node.\n\t\t\t\tif (!attrs) {\n\t\t\t\t\tvar _node = nodeAfter;\n\n\t\t\t\t\twhile (_node && !attrs) {\n\t\t\t\t\t\t_node = _node.nextSibling;\n\t\t\t\t\t\tattrs = getAttrsIfCharacter(_node);\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\t// 6. If not found, selection should retrieve attributes from parent.\n\t\t\t\tif (!attrs) {\n\t\t\t\t\tattrs = this._getStoredAttributes();\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn attrs;\n\t\t}\n\n\t\t/**\n   * Fixes a selection range after it ends up in graveyard root.\n   *\n   * @private\n   * @param {module:engine/model/liverange~LiveRange} gyRange The range added in selection, that ended up in graveyard root.\n   * @param {module:engine/model/range~Range} oldRange The state of that range before it was added to graveyard root.\n   */\n\n\t}, {\n\t\tkey: '_fixGraveyardSelection',\n\t\tvalue: function _fixGraveyardSelection(gyRange, oldRange) {\n\t\t\tvar gyPath = gyRange.start.path;\n\n\t\t\tvar newPathLength = oldRange.start.path.length - (gyPath.length - 2);\n\t\t\tvar newPath = oldRange.start.path.slice(0, newPathLength);\n\t\t\tnewPath[newPath.length - 1] -= gyPath[1];\n\n\t\t\tvar newPosition = new _position2.default(oldRange.root, newPath);\n\t\t\tvar selectionRange = this._document.getNearestSelectionRange(newPosition);\n\n\t\t\t// If nearest valid selection range cannot be found - use one created at root beginning.\n\t\t\tif (!selectionRange) {\n\t\t\t\tselectionRange = new _range2.default(new _position2.default(newPosition.root, [0]));\n\t\t\t}\n\n\t\t\tvar newRange = this._prepareRange(selectionRange);\n\t\t\tvar index = this._ranges.indexOf(gyRange);\n\t\t\tgyRange.detach();\n\n\t\t\tthis._ranges.splice(index, 1, newRange);\n\t\t}\n\t}, {\n\t\tkey: 'isCollapsed',\n\t\tget: function get() {\n\t\t\tvar length = this._ranges.length;\n\n\t\t\treturn length === 0 ? true : _get(LiveSelection.prototype.__proto__ || Object.getPrototypeOf(LiveSelection.prototype), 'isCollapsed', this);\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: 'anchor',\n\t\tget: function get() {\n\t\t\treturn _get(LiveSelection.prototype.__proto__ || Object.getPrototypeOf(LiveSelection.prototype), 'anchor', this) || this._document._getDefaultRange().start;\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: 'focus',\n\t\tget: function get() {\n\t\t\treturn _get(LiveSelection.prototype.__proto__ || Object.getPrototypeOf(LiveSelection.prototype), 'focus', this) || this._document._getDefaultRange().start;\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: 'rangeCount',\n\t\tget: function get() {\n\t\t\treturn this._ranges.length ? this._ranges.length : 1;\n\t\t}\n\t}], [{\n\t\tkey: 'createFromSelection',\n\t\tvalue: function createFromSelection(otherSelection) {\n\t\t\tvar selection = new this(otherSelection._document);\n\t\t\tselection.setTo(otherSelection);\n\n\t\t\treturn selection;\n\t\t}\n\t}, {\n\t\tkey: '_getStoreAttributeKey',\n\t\tvalue: function _getStoreAttributeKey(key) {\n\t\t\treturn storePrefix + key;\n\t\t}\n\t}]);\n\n\treturn LiveSelection;\n}(_selection2.default);\n\n/**\n * @event change:attribute\n */\n\n// Helper function for {@link module:engine/model/liveselection~LiveSelection#_updateAttributes}. It takes model item, checks whether\n// it is a text node (or text proxy) and if so, returns it's attributes. If not, returns `null`.\n//\n// @param {module:engine/model/item~Item|null}  node\n// @returns {Boolean}\n\n\nexports.default = LiveSelection;\nfunction getAttrsIfCharacter(node) {\n\tif (node instanceof _textproxy2.default || node instanceof _text2.default) {\n\t\treturn node.getAttributes();\n\t}\n\n\treturn null;\n}\n\n/***/ }),\n/* 316 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module engine/model/markercollection\n */\n\nvar _liverange = __webpack_require__(110);\n\nvar _liverange2 = _interopRequireDefault(_liverange);\n\nvar _position = __webpack_require__(1);\n\nvar _position2 = _interopRequireDefault(_position);\n\nvar _range = __webpack_require__(3);\n\nvar _range2 = _interopRequireDefault(_range);\n\nvar _emittermixin = __webpack_require__(8);\n\nvar _emittermixin2 = _interopRequireDefault(_emittermixin);\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nvar _mix = __webpack_require__(4);\n\nvar _mix2 = _interopRequireDefault(_mix);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * Creates, stores and manages {@link ~Marker markers}.\n *\n * Markers are created by {@link ~MarkerCollection#set setting} a name for a {@link module:engine/model/liverange~LiveRange live range}\n * in `MarkerCollection`. Name is used to group and identify markers. Names have to be unique, but markers can be grouped by\n * using common prefixes, separated with `:`, for example: `user:john` or `search:3`.\n *\n * Since markers are based on {@link module:engine/model/liverange~LiveRange live ranges}, for efficiency reasons, it's\n * best to create and keep at least markers as possible.\n */\nvar MarkerCollection = function () {\n\t/**\n  * Creates a markers collection.\n  */\n\tfunction MarkerCollection() {\n\t\t_classCallCheck(this, MarkerCollection);\n\n\t\t/**\n   * Stores {@link ~Marker markers} added to the collection.\n   *\n   * @private\n   * @member {Map} #_markers\n   */\n\t\tthis._markers = new Map();\n\t}\n\n\t/**\n  * Returns an iterator that iterates over all {@link ~Marker markers} added to the collection.\n  *\n  * @returns {Iterator}\n  */\n\n\n\t_createClass(MarkerCollection, [{\n\t\tkey: Symbol.iterator,\n\t\tvalue: function value() {\n\t\t\treturn this._markers.values();\n\t\t}\n\n\t\t/**\n   * Checks if marker with given `markerName` is in the collection.\n   *\n   * @param {String} markerName Marker name.\n   * @returns {Boolean} `true` if marker with given `markerName` is in the collection, `false` otherwise.\n   */\n\n\t}, {\n\t\tkey: 'has',\n\t\tvalue: function has(markerName) {\n\t\t\treturn this._markers.has(markerName);\n\t\t}\n\n\t\t/**\n   * Returns {@link ~Marker marker} with given `markerName`.\n   *\n   * @param {String} markerName Name of marker to get.\n   * @returns {module:engine/model/markercollection~Marker|null} Marker with given name or `null` if such marker was\n   * not added to the collection.\n   */\n\n\t}, {\n\t\tkey: 'get',\n\t\tvalue: function get(markerName) {\n\t\t\treturn this._markers.get(markerName) || null;\n\t\t}\n\n\t\t/**\n   * Creates and adds a {@link ~Marker marker} to the `MarkerCollection` with given name on given\n   * {@link module:engine/model/range~Range range}.\n   *\n   * If `MarkerCollection` already had a marker with given name (or {@link ~Marker marker} was passed) and the range to\n   * set is different, the marker in collection is removed and then new marker is added. If the range was same, nothing\n   * happens and `false` is returned.\n   *\n   * @fires module:engine/model/markercollection~MarkerCollection#event:add\n   * @fires module:engine/model/markercollection~MarkerCollection#event:remove\n   * @param {String|module:engine/model/markercollection~Marker} markerOrName Name of marker to add or Marker instance to update.\n   * @param {module:engine/model/range~Range} range Marker range.\n   * @returns {module:engine/model/markercollection~Marker} `Marker` instance added to the collection.\n   */\n\n\t}, {\n\t\tkey: 'set',\n\t\tvalue: function set(markerOrName, range) {\n\t\t\tvar markerName = markerOrName instanceof Marker ? markerOrName.name : markerOrName;\n\t\t\tvar oldMarker = this._markers.get(markerName);\n\n\t\t\tif (oldMarker) {\n\t\t\t\tvar oldRange = oldMarker.getRange();\n\n\t\t\t\tif (oldRange.isEqual(range)) {\n\t\t\t\t\treturn oldMarker;\n\t\t\t\t}\n\n\t\t\t\tthis.remove(markerName);\n\t\t\t}\n\n\t\t\tvar liveRange = _liverange2.default.createFromRange(range);\n\t\t\tvar marker = new Marker(markerName, liveRange);\n\n\t\t\tthis._markers.set(markerName, marker);\n\t\t\tthis.fire('add', marker);\n\n\t\t\treturn marker;\n\t\t}\n\n\t\t/**\n   * Removes given {@link ~Marker marker} or a marker with given name from the `MarkerCollection`.\n   *\n   * @param {String} markerOrName Marker or name of a marker to remove.\n   * @returns {Boolean} `true` if marker was found and removed, `false` otherwise.\n   */\n\n\t}, {\n\t\tkey: 'remove',\n\t\tvalue: function remove(markerOrName) {\n\t\t\tvar markerName = markerOrName instanceof Marker ? markerOrName.name : markerOrName;\n\t\t\tvar oldMarker = this._markers.get(markerName);\n\n\t\t\tif (oldMarker) {\n\t\t\t\tthis._markers.delete(markerName);\n\t\t\t\tthis.fire('remove', oldMarker);\n\n\t\t\t\tthis._destroyMarker(oldMarker);\n\n\t\t\t\treturn true;\n\t\t\t}\n\n\t\t\treturn false;\n\t\t}\n\n\t\t/**\n   * Returns iterator that iterates over all markers, which ranges contain given {@link module:engine/model/position~Position position}.\n   *\n   * @param {module:engine/model/position~Position} position\n   * @returns {Iterator.<module:engine/model/markercollection~Marker>}\n   */\n\n\t}, {\n\t\tkey: 'getMarkersAtPosition',\n\t\tvalue: regeneratorRuntime.mark(function getMarkersAtPosition(position) {\n\t\t\tvar _iteratorNormalCompletion, _didIteratorError, _iteratorError, _iterator, _step, marker;\n\n\t\t\treturn regeneratorRuntime.wrap(function getMarkersAtPosition$(_context) {\n\t\t\t\twhile (1) {\n\t\t\t\t\tswitch (_context.prev = _context.next) {\n\t\t\t\t\t\tcase 0:\n\t\t\t\t\t\t\t_iteratorNormalCompletion = true;\n\t\t\t\t\t\t\t_didIteratorError = false;\n\t\t\t\t\t\t\t_iteratorError = undefined;\n\t\t\t\t\t\t\t_context.prev = 3;\n\t\t\t\t\t\t\t_iterator = this[Symbol.iterator]();\n\n\t\t\t\t\t\tcase 5:\n\t\t\t\t\t\t\tif (_iteratorNormalCompletion = (_step = _iterator.next()).done) {\n\t\t\t\t\t\t\t\t_context.next = 13;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\tmarker = _step.value;\n\n\t\t\t\t\t\t\tif (!marker.getRange().containsPosition(position)) {\n\t\t\t\t\t\t\t\t_context.next = 10;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t_context.next = 10;\n\t\t\t\t\t\t\treturn marker;\n\n\t\t\t\t\t\tcase 10:\n\t\t\t\t\t\t\t_iteratorNormalCompletion = true;\n\t\t\t\t\t\t\t_context.next = 5;\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase 13:\n\t\t\t\t\t\t\t_context.next = 19;\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase 15:\n\t\t\t\t\t\t\t_context.prev = 15;\n\t\t\t\t\t\t\t_context.t0 = _context['catch'](3);\n\t\t\t\t\t\t\t_didIteratorError = true;\n\t\t\t\t\t\t\t_iteratorError = _context.t0;\n\n\t\t\t\t\t\tcase 19:\n\t\t\t\t\t\t\t_context.prev = 19;\n\t\t\t\t\t\t\t_context.prev = 20;\n\n\t\t\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\tcase 22:\n\t\t\t\t\t\t\t_context.prev = 22;\n\n\t\t\t\t\t\t\tif (!_didIteratorError) {\n\t\t\t\t\t\t\t\t_context.next = 25;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\tthrow _iteratorError;\n\n\t\t\t\t\t\tcase 25:\n\t\t\t\t\t\t\treturn _context.finish(22);\n\n\t\t\t\t\t\tcase 26:\n\t\t\t\t\t\t\treturn _context.finish(19);\n\n\t\t\t\t\t\tcase 27:\n\t\t\t\t\t\tcase 'end':\n\t\t\t\t\t\t\treturn _context.stop();\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}, getMarkersAtPosition, this, [[3, 15, 19, 27], [20,, 22, 26]]);\n\t\t})\n\n\t\t/**\n   * Destroys markers collection.\n   */\n\n\t}, {\n\t\tkey: 'destroy',\n\t\tvalue: function destroy() {\n\t\t\tvar _iteratorNormalCompletion2 = true;\n\t\t\tvar _didIteratorError2 = false;\n\t\t\tvar _iteratorError2 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator2 = this._markers.values()[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {\n\t\t\t\t\tvar marker = _step2.value;\n\n\t\t\t\t\tthis._destroyMarker(marker);\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError2 = true;\n\t\t\t\t_iteratorError2 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion2 && _iterator2.return) {\n\t\t\t\t\t\t_iterator2.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError2) {\n\t\t\t\t\t\tthrow _iteratorError2;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tthis._markers = null;\n\n\t\t\tthis.stopListening();\n\t\t}\n\n\t\t/**\n   * Iterates over all markers that starts with given `prefix`.\n   *\n   *\t\tconst markerFooA = markersCollection.set( 'foo:a', rangeFooA );\n   *\t\tconst markerFooB = markersCollection.set( 'foo:b', rangeFooB );\n   *\t\tconst markerBarA = markersCollection.set( 'bar:a', rangeBarA );\n   *\t\tconst markerFooBarA = markersCollection.set( 'foobar:a', rangeFooBarA );\n   *\t\tArray.from( markersCollection.getMarkersGroup( 'foo' ) ); // [ markerFooA, markerFooB ]\n   *\t\tArray.from( markersCollection.getMarkersGroup( 'a' ) ); // []\n   *\n   * @param prefix\n   * @returns {Iterator.<module:engine/model/markercollection~Marker>}\n   */\n\n\t}, {\n\t\tkey: 'getMarkersGroup',\n\t\tvalue: regeneratorRuntime.mark(function getMarkersGroup(prefix) {\n\t\t\tvar _iteratorNormalCompletion3, _didIteratorError3, _iteratorError3, _iterator3, _step3, marker;\n\n\t\t\treturn regeneratorRuntime.wrap(function getMarkersGroup$(_context2) {\n\t\t\t\twhile (1) {\n\t\t\t\t\tswitch (_context2.prev = _context2.next) {\n\t\t\t\t\t\tcase 0:\n\t\t\t\t\t\t\t_iteratorNormalCompletion3 = true;\n\t\t\t\t\t\t\t_didIteratorError3 = false;\n\t\t\t\t\t\t\t_iteratorError3 = undefined;\n\t\t\t\t\t\t\t_context2.prev = 3;\n\t\t\t\t\t\t\t_iterator3 = this._markers.values()[Symbol.iterator]();\n\n\t\t\t\t\t\tcase 5:\n\t\t\t\t\t\t\tif (_iteratorNormalCompletion3 = (_step3 = _iterator3.next()).done) {\n\t\t\t\t\t\t\t\t_context2.next = 13;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\tmarker = _step3.value;\n\n\t\t\t\t\t\t\tif (!marker.name.startsWith(prefix + ':')) {\n\t\t\t\t\t\t\t\t_context2.next = 10;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t_context2.next = 10;\n\t\t\t\t\t\t\treturn marker;\n\n\t\t\t\t\t\tcase 10:\n\t\t\t\t\t\t\t_iteratorNormalCompletion3 = true;\n\t\t\t\t\t\t\t_context2.next = 5;\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase 13:\n\t\t\t\t\t\t\t_context2.next = 19;\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase 15:\n\t\t\t\t\t\t\t_context2.prev = 15;\n\t\t\t\t\t\t\t_context2.t0 = _context2['catch'](3);\n\t\t\t\t\t\t\t_didIteratorError3 = true;\n\t\t\t\t\t\t\t_iteratorError3 = _context2.t0;\n\n\t\t\t\t\t\tcase 19:\n\t\t\t\t\t\t\t_context2.prev = 19;\n\t\t\t\t\t\t\t_context2.prev = 20;\n\n\t\t\t\t\t\t\tif (!_iteratorNormalCompletion3 && _iterator3.return) {\n\t\t\t\t\t\t\t\t_iterator3.return();\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\tcase 22:\n\t\t\t\t\t\t\t_context2.prev = 22;\n\n\t\t\t\t\t\t\tif (!_didIteratorError3) {\n\t\t\t\t\t\t\t\t_context2.next = 25;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\tthrow _iteratorError3;\n\n\t\t\t\t\t\tcase 25:\n\t\t\t\t\t\t\treturn _context2.finish(22);\n\n\t\t\t\t\t\tcase 26:\n\t\t\t\t\t\t\treturn _context2.finish(19);\n\n\t\t\t\t\t\tcase 27:\n\t\t\t\t\t\tcase 'end':\n\t\t\t\t\t\t\treturn _context2.stop();\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}, getMarkersGroup, this, [[3, 15, 19, 27], [20,, 22, 26]]);\n\t\t})\n\n\t\t/**\n   * Destroys marker.\n   *\n   * @private\n   * @param {module:engine/model/markercollection~Marker} marker Marker to destroy.\n   */\n\n\t}, {\n\t\tkey: '_destroyMarker',\n\t\tvalue: function _destroyMarker(marker) {\n\t\t\tmarker.stopListening();\n\t\t\tmarker._liveRange.detach();\n\t\t\tmarker._liveRange = null;\n\t\t}\n\n\t\t/**\n   * Fired whenever marker is added to `MarkerCollection`.\n   *\n   * @event add\n   * @param {module:engine/model/markercollection~Marker} The added marker.\n   */\n\n\t\t/**\n   * Fired whenever marker is removed from `MarkerCollection`.\n   *\n   * @event remove\n   * @param {module:engine/model/markercollection~Marker} marker The removed marker.\n   */\n\n\t}]);\n\n\treturn MarkerCollection;\n}();\n\nexports.default = MarkerCollection;\n\n\n(0, _mix2.default)(MarkerCollection, _emittermixin2.default);\n\n/**\n * `Marker` is a continuous parts of model (like a range), is named and represent some kind of information about marked\n * part of model document. In contrary to {@link module:engine/model/node~Node nodes}, which are building blocks of\n * model document tree, markers are not stored directly in document tree. Still, they are document data, by giving\n * additional meaning to the part of a model document between marker start and marker end.\n *\n * In this sense, markers are similar to adding and converting attributes on nodes. The difference is that attribute is\n * connected with a given node (e.g. a character is bold no matter if it gets moved or content around it changes).\n * Markers on the other hand are continuous ranges and are characterised by their start and end position. This means that\n * any character in the marker is marked by the marker. For example, if a character is moved outside of marker it stops being\n * \"special\" and the marker is shrunk. Similarly, when a character is moved into the marker from other place in document\n * model, it starts being \"special\" and the marker is enlarged.\n *\n * Since markers are based on {@link module:engine/model/liverange~LiveRange live ranges}, for efficiency reasons, it's\n * best to create and keep at least markers as possible.\n *\n * Markers can be converted to view by adding appropriate converters for\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:addMarker addMarker} and\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:removeMarker removeMarker}\n * events, or by building converters for {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher}\n * using {@link module:engine/conversion/buildmodelconverter~buildModelConverter model converter builder}.\n *\n * Another upside of markers is that finding marked part of document is fast and easy. Using attributes to mark some nodes\n * and then trying to find that part of document would require traversing whole document tree. Marker gives instant access\n * to the range which it is marking at the moment.\n *\n * `Marker` instances are created and destroyed only by {@link ~MarkerCollection MarkerCollection}.\n */\n\nvar Marker = function () {\n\t/**\n  * Creates a marker instance.\n  *\n  * @param {String} name Marker name.\n  * @param {module:engine/model/liverange~LiveRange} liveRange Range marked by the marker.\n  */\n\tfunction Marker(name, liveRange) {\n\t\t_classCallCheck(this, Marker);\n\n\t\t/**\n   * Marker name.\n   *\n   * @readonly\n   * @member {String} #name\n   */\n\t\tthis.name = name;\n\n\t\t/**\n   * Range marked by the marker.\n   *\n   * @protected\n   * @member {module:engine/model/liverange~LiveRange} #_liveRange\n   */\n\t\tthis._liveRange = liveRange;\n\n\t\tthis._liveRange.delegate('change').to(this);\n\t}\n\n\t/**\n  * Returns current marker start position.\n  *\n  * @returns {module:engine/model/position~Position}\n  */\n\n\n\t_createClass(Marker, [{\n\t\tkey: 'getStart',\n\t\tvalue: function getStart() {\n\t\t\tif (!this._liveRange) {\n\t\t\t\t/**\n     * Operating on destroyed marker instance.\n     *\n     * @error marker-destroyed\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('marker-destroyed: Operating on destroyed marker instance.');\n\t\t\t}\n\n\t\t\treturn _position2.default.createFromPosition(this._liveRange.start);\n\t\t}\n\n\t\t/**\n   * Returns current marker end position.\n   *\n   * @returns {module:engine/model/position~Position}\n   */\n\n\t}, {\n\t\tkey: 'getEnd',\n\t\tvalue: function getEnd() {\n\t\t\tif (!this._liveRange) {\n\t\t\t\t/**\n     * Operating on destroyed marker instance.\n     *\n     * @error marker-destroyed\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('marker-destroyed: Operating on destroyed marker instance.');\n\t\t\t}\n\n\t\t\treturn _position2.default.createFromPosition(this._liveRange.end);\n\t\t}\n\n\t\t/**\n   * Returns a range that represents current state of marker.\n   *\n   * Keep in mind that returned value is a {@link module:engine/model/range~Range Range}, not a\n   * {@link module:engine/model/liverange~LiveRange LiveRange}. This means that it is up-to-date and relevant only\n   * until next model document change. Do not store values returned by this method. Instead, store {@link ~Marker#name}\n   * and get `Marker` instance from {@link module:engine/model/markercollection~MarkerCollection MarkerCollection} every\n   * time there is a need to read marker properties. This will guarantee that the marker has not been removed and\n   * that it's data is up-to-date.\n   *\n   * @returns {module:engine/model/range~Range}\n   */\n\n\t}, {\n\t\tkey: 'getRange',\n\t\tvalue: function getRange() {\n\t\t\tif (!this._liveRange) {\n\t\t\t\t/**\n     * Operating on destroyed marker instance.\n     *\n     * @error marker-destroyed\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('marker-destroyed: Operating on destroyed marker instance.');\n\t\t\t}\n\n\t\t\treturn _range2.default.createFromRange(this._liveRange);\n\t\t}\n\n\t\t/**\n   * Fired whenever {@link ~Marker#_liveRange marker range} is changed due to changes on {@link module:engine/model/document~Document}.\n   * This is actually a delegated {@link module:engine/model/liverange~LiveRange#event:change LiveRange change event}.\n   *\n   * When marker is removed from {@link module:engine/model/markercollection~MarkerCollection MarkerCollection},\n   * all event listeners listening to it should be removed. It is best to do it on\n   * {@link module:engine/model/markercollection~MarkerCollection#event:remove MarkerCollection remove event}.\n   *\n   * @see module:engine/model/liverange~LiveRange#event:change\n   * @event change\n   * @param {module:engine/model/range~Range} oldRange Range with start and end position equal to start and end position of\n   * this marker range before it got changed.\n   */\n\n\t}]);\n\n\treturn Marker;\n}();\n\n(0, _mix2.default)(Marker, _emittermixin2.default);\n\n/***/ }),\n/* 317 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module engine/model/operation/operationfactory\n */\n\nvar _attributeoperation = __webpack_require__(70);\n\nvar _attributeoperation2 = _interopRequireDefault(_attributeoperation);\n\nvar _insertoperation = __webpack_require__(36);\n\nvar _insertoperation2 = _interopRequireDefault(_insertoperation);\n\nvar _markeroperation = __webpack_require__(111);\n\nvar _markeroperation2 = _interopRequireDefault(_markeroperation);\n\nvar _moveoperation = __webpack_require__(27);\n\nvar _moveoperation2 = _interopRequireDefault(_moveoperation);\n\nvar _nooperation = __webpack_require__(71);\n\nvar _nooperation2 = _interopRequireDefault(_nooperation);\n\nvar _operation = __webpack_require__(32);\n\nvar _operation2 = _interopRequireDefault(_operation);\n\nvar _reinsertoperation = __webpack_require__(112);\n\nvar _reinsertoperation2 = _interopRequireDefault(_reinsertoperation);\n\nvar _removeoperation = __webpack_require__(37);\n\nvar _removeoperation2 = _interopRequireDefault(_removeoperation);\n\nvar _renameoperation = __webpack_require__(113);\n\nvar _renameoperation2 = _interopRequireDefault(_renameoperation);\n\nvar _rootattributeoperation = __webpack_require__(114);\n\nvar _rootattributeoperation2 = _interopRequireDefault(_rootattributeoperation);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nvar operations = {};\noperations[_attributeoperation2.default.className] = _attributeoperation2.default;\noperations[_insertoperation2.default.className] = _insertoperation2.default;\noperations[_markeroperation2.default.className] = _markeroperation2.default;\noperations[_moveoperation2.default.className] = _moveoperation2.default;\noperations[_nooperation2.default.className] = _nooperation2.default;\noperations[_operation2.default.className] = _operation2.default;\noperations[_reinsertoperation2.default.className] = _reinsertoperation2.default;\noperations[_removeoperation2.default.className] = _removeoperation2.default;\noperations[_renameoperation2.default.className] = _renameoperation2.default;\noperations[_rootattributeoperation2.default.className] = _rootattributeoperation2.default;\n\n/**\n * A factory class for creating operations.\n *\n * @abstract\n */\n\nvar OperationFactory = function () {\n\tfunction OperationFactory() {\n\t\t_classCallCheck(this, OperationFactory);\n\t}\n\n\t_createClass(OperationFactory, null, [{\n\t\tkey: 'fromJSON',\n\n\t\t/**\n   * Creates concrete `Operation` object from deserilized object, i.e. from parsed JSON string.\n   *\n   * @param {Object} json Deserialized JSON object.\n   * @param {module:engine/model/document~Document} document Document on which this operation will be applied.\n   * @returns {module:engine/model/operation/operation~Operation}\n   */\n\t\tvalue: function fromJSON(json, document) {\n\t\t\treturn operations[json.__className].fromJSON(json, document);\n\t\t}\n\t}]);\n\n\treturn OperationFactory;\n}();\n\nexports.default = OperationFactory;\n\n/***/ }),\n/* 318 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _insertoperation = __webpack_require__(36);\n\nvar _insertoperation2 = _interopRequireDefault(_insertoperation);\n\nvar _attributeoperation = __webpack_require__(70);\n\nvar _attributeoperation2 = _interopRequireDefault(_attributeoperation);\n\nvar _rootattributeoperation = __webpack_require__(114);\n\nvar _rootattributeoperation2 = _interopRequireDefault(_rootattributeoperation);\n\nvar _renameoperation = __webpack_require__(113);\n\nvar _renameoperation2 = _interopRequireDefault(_renameoperation);\n\nvar _markeroperation = __webpack_require__(111);\n\nvar _markeroperation2 = _interopRequireDefault(_markeroperation);\n\nvar _moveoperation = __webpack_require__(27);\n\nvar _moveoperation2 = _interopRequireDefault(_moveoperation);\n\nvar _removeoperation = __webpack_require__(37);\n\nvar _removeoperation2 = _interopRequireDefault(_removeoperation);\n\nvar _nooperation = __webpack_require__(71);\n\nvar _nooperation2 = _interopRequireDefault(_nooperation);\n\nvar _range = __webpack_require__(3);\n\nvar _range2 = _interopRequireDefault(_range);\n\nvar _comparearrays = __webpack_require__(48);\n\nvar _comparearrays2 = _interopRequireDefault(_comparearrays);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Transforms given {@link module:engine/model/operation/operation~Operation operation}\n * by another {@link module:engine/model/operation/operation~Operation operation}\n * and returns the result of that transformation as an array containing\n * one or more {@link module:engine/model/operation/operation~Operation operations}.\n *\n * Operations work on specified positions, passed to them when they are created.\n * Whenever {@link module:engine/model/document~Document document}\n * changes, we have to reflect those modifications by updating or \"transforming\" operations which are not yet applied.\n * When an operation is transformed, its parameters may change based on the operation by which it is transformed.\n * If the transform-by operation applied any modifications to the Tree Data Model which affect positions or nodes\n * connected with transformed operation, those changes will be reflected in the parameters of the returned operation(s).\n *\n * Whenever the {@link module:engine/model/document~Document document}\n * has different {@link module:engine/model/document~Document#version}\n * than the operation you want to {@link module:engine/model/document~Document#applyOperation apply}, you need to transform that\n * operation by all operations which were already applied to the {@link module:engine/model/document~Document document} and have greater\n * {@link module:engine/model/document~Document#version} than the operation being applied. Transform them in the same order as those\n * operations which were applied. This way all modifications done to the Tree Data Model will be reflected\n * in the operation parameters and the operation will \"operate\" on \"up-to-date\" version of the Tree Data Model.\n * This is mostly the case with Operational Transformations but it might be needed in particular features as well.\n *\n * In some cases, when given operation apply changes to the same nodes as this operation, two or more operations need\n * to be created as one would not be able to reflect the combination of these operations.\n * This is why an array is returned instead of a single object. All returned operations have to be applied\n * (or further transformed) to get an effect which was intended in pre-transformed operation.\n *\n * Sometimes two operations are in conflict. This happens when they modify the same node in a different way, i.e.\n * set different value for the same attribute or move the node into different positions. When this happens,\n * we need to decide which operation is more important. We can't assume that operation `a` or operation `b` is always\n * more important. In Operational Transformations algorithms we often need to get a result of transforming\n * `a` by `b` and also `b` by `a`. In both transformations the same operation has to be the important one. If we assume\n * that first or the second passed operation is always more important we won't be able to solve this case.\n *\n * @external module:engine/model/model.operation\n * @function module:engine/model/operation/transform~transform\n * @param {module:engine/model/operation/operation~Operation} a Operation that will be transformed.\n * @param {module:engine/model/operation/operation~Operation} b Operation to transform by.\n * @param {Boolean} isAMoreImportantThanB Flag indicating whether the operation which will be transformed (`a`) should be treated\n * as more important when resolving conflicts.\n * @returns {Array.<module:engine/model/operation/operation~Operation>} Result of the transformation.\n */\n\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/operation/transform\n */\n\nexports.default = transform;\n\n\nvar ot = {\n\tInsertOperation: {\n\t\t// Transforms InsertOperation `a` by InsertOperation `b`. Accepts a flag stating whether `a` is more important\n\t\t// than `b` when it comes to resolving conflicts. Returns results as an array of operations.\n\t\tInsertOperation: function InsertOperation(a, b, isStrong) {\n\t\t\t// Transformed operations are always new instances, not references to the original operations.\n\t\t\tvar transformed = a.clone();\n\n\t\t\t// Transform insert position by the other operation position.\n\t\t\ttransformed.position = transformed.position._getTransformedByInsertion(b.position, b.nodes.maxOffset, !isStrong);\n\n\t\t\treturn [transformed];\n\t\t},\n\n\n\t\tAttributeOperation: doNotUpdate,\n\n\t\tRootAttributeOperation: doNotUpdate,\n\n\t\tRenameOperation: doNotUpdate,\n\n\t\tMarkerOperation: doNotUpdate,\n\n\t\t// Transforms InsertOperation `a` by MoveOperation `b`. Accepts a flag stating whether `a` is more important\n\t\t// than `b` when it comes to resolving conflicts. Returns results as an array of operations.\n\t\tMoveOperation: function MoveOperation(a, b, isStrong) {\n\t\t\tvar transformed = a.clone();\n\n\t\t\t// Transform insert position by the other operation parameters.\n\t\t\ttransformed.position = a.position._getTransformedByMove(b.sourcePosition, b.targetPosition, b.howMany, !isStrong, b.isSticky);\n\n\t\t\treturn [transformed];\n\t\t}\n\t},\n\n\tAttributeOperation: {\n\t\t// Transforms AttributeOperation `a` by InsertOperation `b`. Returns results as an array of operations.\n\t\tInsertOperation: function InsertOperation(a, b) {\n\t\t\t// Transform this operation's range.\n\t\t\tvar ranges = a.range._getTransformedByInsertion(b.position, b.nodes.maxOffset, true, false);\n\n\t\t\t// Map transformed range(s) to operations and return them.\n\t\t\treturn ranges.reverse().map(function (range) {\n\t\t\t\treturn new _attributeoperation2.default(range, a.key, a.oldValue, a.newValue, a.baseVersion);\n\t\t\t});\n\t\t},\n\n\n\t\t// Transforms AttributeOperation `a` by AttributeOperation `b`. Accepts a flag stating whether `a` is more important\n\t\t// than `b` when it comes to resolving conflicts. Returns results as an array of operations.\n\t\tAttributeOperation: function AttributeOperation(a, b, isStrong) {\n\t\t\tif (a.key === b.key) {\n\t\t\t\t// If operations attributes are in conflict, check if their ranges intersect and manage them properly.\n\n\t\t\t\t// First, we want to apply change to the part of a range that has not been changed by the other operation.\n\t\t\t\tvar operations = a.range.getDifference(b.range).map(function (range) {\n\t\t\t\t\treturn new _attributeoperation2.default(range, a.key, a.oldValue, a.newValue, a.baseVersion);\n\t\t\t\t});\n\n\t\t\t\t// Then we take care of the common part of ranges.\n\t\t\t\tvar common = a.range.getIntersection(b.range);\n\n\t\t\t\tif (common) {\n\t\t\t\t\t// If this operation is more important, we also want to apply change to the part of the\n\t\t\t\t\t// original range that has already been changed by the other operation. Since that range\n\t\t\t\t\t// got changed we also have to update `oldValue`.\n\t\t\t\t\tif (isStrong) {\n\t\t\t\t\t\toperations.push(new _attributeoperation2.default(common, b.key, b.newValue, a.newValue, a.baseVersion));\n\t\t\t\t\t} else if (operations.length === 0) {\n\t\t\t\t\t\toperations.push(new _nooperation2.default(0));\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\treturn operations;\n\t\t\t} else {\n\t\t\t\t// If operations don't conflict, simply return an array containing just a clone of this operation.\n\t\t\t\treturn [a.clone()];\n\t\t\t}\n\t\t},\n\n\n\t\tRootAttributeOperation: doNotUpdate,\n\n\t\tRenameOperation: doNotUpdate,\n\n\t\tMarkerOperation: doNotUpdate,\n\n\t\t// Transforms AttributeOperation `a` by MoveOperation `b`. Returns results as an array of operations.\n\t\tMoveOperation: function MoveOperation(a, b) {\n\t\t\t// Convert MoveOperation properties into a range.\n\t\t\tvar rangeB = _range2.default.createFromPositionAndShift(b.sourcePosition, b.howMany);\n\n\t\t\t// This will aggregate transformed ranges.\n\t\t\tvar ranges = [];\n\n\t\t\t// Special case when MoveOperation is in fact a RemoveOperation. RemoveOperation not only moves nodes but also\n\t\t\t// creates a \"holder\" element for them in graveyard. If there was a RemoveOperation pointing to an offset\n\t\t\t// before this AttributeOperation, we have to increment AttributeOperation's offset.\n\t\t\tif (b instanceof _removeoperation2.default && b._needsHolderElement && a.range.root == b.targetPosition.root && a.range.start.path[0] >= b._holderElementOffset) {\n\t\t\t\t// Do not change original operation!\n\t\t\t\ta = a.clone();\n\t\t\t\ta.range.start.path[0]++;\n\t\t\t\ta.range.end.path[0]++;\n\t\t\t}\n\n\t\t\t// Difference is a part of changed range that is modified by AttributeOperation but is not affected\n\t\t\t// by MoveOperation. This can be zero, one or two ranges (if moved range is inside changed range).\n\t\t\t// Right now we will make a simplification and join difference ranges and transform them as one. We will cover rangeB later.\n\t\t\tvar difference = joinRanges(a.range.getDifference(rangeB));\n\n\t\t\t// Common is a range of nodes that is affected by MoveOperation. So it got moved to other place.\n\t\t\tvar common = a.range.getIntersection(rangeB);\n\n\t\t\tif (difference !== null) {\n\t\t\t\t// MoveOperation removes nodes from their original position. We acknowledge this by proper transformation.\n\t\t\t\t// Take the start and the end of the range and transform them by deletion of moved nodes.\n\t\t\t\t// Note that if rangeB was inside AttributeOperation range, only difference.end will be transformed.\n\t\t\t\t// This nicely covers the joining simplification we did in the previous step.\n\t\t\t\tdifference.start = difference.start._getTransformedByDeletion(b.sourcePosition, b.howMany);\n\t\t\t\tdifference.end = difference.end._getTransformedByDeletion(b.sourcePosition, b.howMany);\n\n\t\t\t\t// MoveOperation pastes nodes into target position. We acknowledge this by proper transformation.\n\t\t\t\t// Note that since we operate on transformed difference range, we should transform by\n\t\t\t\t// previously transformed target position.\n\t\t\t\t// Note that we do not use Position._getTransformedByMove on range boundaries because we need to\n\t\t\t\t// transform by insertion a range as a whole, since newTargetPosition might be inside that range.\n\t\t\t\tranges = difference._getTransformedByInsertion(b.getMovedRangeStart(), b.howMany, true, false).reverse();\n\t\t\t}\n\n\t\t\tif (common !== null) {\n\t\t\t\t// Here we do not need to worry that newTargetPosition is inside moved range, because that\n\t\t\t\t// would mean that the MoveOperation targets into itself, and that is incorrect operation.\n\t\t\t\t// Instead, we calculate the new position of that part of original range.\n\t\t\t\tcommon.start = common.start._getCombined(b.sourcePosition, b.getMovedRangeStart());\n\t\t\t\tcommon.end = common.end._getCombined(b.sourcePosition, b.getMovedRangeStart());\n\n\t\t\t\tranges.push(common);\n\t\t\t}\n\n\t\t\t// Map transformed range(s) to operations and return them.\n\t\t\treturn ranges.map(function (range) {\n\t\t\t\treturn new _attributeoperation2.default(range, a.key, a.oldValue, a.newValue, a.baseVersion);\n\t\t\t});\n\t\t}\n\t},\n\n\tRootAttributeOperation: {\n\t\tInsertOperation: doNotUpdate,\n\n\t\tAttributeOperation: doNotUpdate,\n\n\t\t// Transforms RootAttributeOperation `a` by RootAttributeOperation `b`. Accepts a flag stating whether `a` is more important\n\t\t// than `b` when it comes to resolving conflicts. Returns results as an array of operations.\n\t\tRootAttributeOperation: function RootAttributeOperation(a, b, isStrong) {\n\t\t\tif (a.root === b.root && a.key === b.key) {\n\t\t\t\tif (a.newValue !== b.newValue && !isStrong || a.newValue === b.newValue) {\n\t\t\t\t\treturn [new _nooperation2.default(a.baseVersion)];\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn [a.clone()];\n\t\t},\n\n\n\t\tRenameOperation: doNotUpdate,\n\n\t\tMarkerOperation: doNotUpdate,\n\n\t\tMoveOperation: doNotUpdate\n\t},\n\n\tRenameOperation: {\n\t\t// Transforms RenameOperation `a` by InsertOperation `b`. Returns results as an array of operations.\n\t\tInsertOperation: function InsertOperation(a, b) {\n\t\t\t// Clone the operation, we don't want to alter the original operation.\n\t\t\tvar clone = a.clone();\n\n\t\t\t// Transform this operation's position.\n\t\t\tclone.position = clone.position._getTransformedByInsertion(b.position, b.nodes.maxOffset, true);\n\n\t\t\treturn [clone];\n\t\t},\n\n\n\t\tAttributeOperation: doNotUpdate,\n\n\t\tRootAttributeOperation: doNotUpdate,\n\n\t\t// Transforms RenameOperation `a` by RenameOperation `b`. Accepts a flag stating whether `a` is more important\n\t\t// than `b` when it comes to resolving conflicts. Returns results as an array of operations.\n\t\tRenameOperation: function RenameOperation(a, b, isStrong) {\n\t\t\t// Clone the operation, we don't want to alter the original operation.\n\t\t\tvar clone = a.clone();\n\n\t\t\tif (a.position.isEqual(b.position)) {\n\t\t\t\tif (isStrong) {\n\t\t\t\t\tclone.oldName = b.newName;\n\t\t\t\t} else {\n\t\t\t\t\treturn [new _nooperation2.default(a.baseVersion)];\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn [clone];\n\t\t},\n\n\n\t\tMarkerOperation: doNotUpdate,\n\n\t\t// Transforms RenameOperation `a` by MoveOperation `b`. Returns results as an array of operations.\n\t\tMoveOperation: function MoveOperation(a, b) {\n\t\t\tvar clone = a.clone();\n\t\t\tvar isSticky = clone.position.isEqual(b.sourcePosition);\n\n\t\t\tclone.position = clone.position._getTransformedByMove(b.sourcePosition, b.targetPosition, b.howMany, true, isSticky);\n\n\t\t\treturn [clone];\n\t\t}\n\t},\n\n\tMarkerOperation: {\n\t\t// Transforms MarkerOperation `a` by InsertOperation `b`. Returns results as an array of operations.\n\t\tInsertOperation: function InsertOperation(a, b) {\n\t\t\t// Clone the operation, we don't want to alter the original operation.\n\t\t\tvar clone = a.clone();\n\n\t\t\tif (clone.oldRange) {\n\t\t\t\tclone.oldRange = clone.oldRange._getTransformedByInsertion(b.position, b.nodes.maxOffset, false, false)[0];\n\t\t\t}\n\n\t\t\tif (clone.newRange) {\n\t\t\t\tclone.newRange = clone.newRange._getTransformedByInsertion(b.position, b.nodes.maxOffset, false, false)[0];\n\t\t\t}\n\n\t\t\treturn [clone];\n\t\t},\n\n\n\t\tAttributeOperation: doNotUpdate,\n\n\t\tRootAttributeOperation: doNotUpdate,\n\n\t\tRenameOperation: doNotUpdate,\n\n\t\t// Transforms MarkerOperation `a` by MarkerOperation `b`. Accepts a flag stating whether `a` is more important\n\t\t// than `b` when it comes to resolving conflicts. Returns results as an array of operations.\n\t\tMarkerOperation: function MarkerOperation(a, b, isStrong) {\n\t\t\t// Clone the operation, we don't want to alter the original operation.\n\t\t\tvar clone = a.clone();\n\n\t\t\tif (a.name == b.name) {\n\t\t\t\tif (isStrong) {\n\t\t\t\t\tclone.oldRange = b.newRange;\n\t\t\t\t} else {\n\t\t\t\t\treturn [new _nooperation2.default(a.baseVersion)];\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn [clone];\n\t\t},\n\n\n\t\t// Transforms MarkerOperation `a` by MoveOperation `b`. Returns results as an array of operations.\n\t\tMoveOperation: function MoveOperation(a, b) {\n\t\t\t// Clone the operation, we don't want to alter the original operation.\n\t\t\tvar clone = a.clone();\n\n\t\t\tif (clone.oldRange) {\n\t\t\t\tvar oldRanges = clone.oldRange._getTransformedByMove(b.sourcePosition, b.targetPosition, b.howMany);\n\t\t\t\tclone.oldRange = _range2.default.createFromRanges(oldRanges);\n\t\t\t}\n\n\t\t\tif (clone.newRange) {\n\t\t\t\tvar newRanges = clone.newRange._getTransformedByMove(b.sourcePosition, b.targetPosition, b.howMany);\n\t\t\t\tclone.newRange = _range2.default.createFromRanges(newRanges);\n\t\t\t}\n\n\t\t\treturn [clone];\n\t\t}\n\t},\n\n\tMoveOperation: {\n\t\t// Transforms MoveOperation `a` by InsertOperation `b`. Accepts a flag stating whether `a` is more important\n\t\t// than `b` when it comes to resolving conflicts. Returns results as an array of operations.\n\t\tInsertOperation: function InsertOperation(a, b, isStrong) {\n\t\t\t// Create range from MoveOperation properties and transform it by insertion.\n\t\t\tvar range = _range2.default.createFromPositionAndShift(a.sourcePosition, a.howMany);\n\t\t\trange = range._getTransformedByInsertion(b.position, b.nodes.maxOffset, false, a.isSticky)[0];\n\n\t\t\tvar result = new a.constructor(range.start, range.end.offset - range.start.offset, a instanceof _removeoperation2.default ? a.baseVersion : a.targetPosition._getTransformedByInsertion(b.position, b.nodes.maxOffset, !isStrong), a instanceof _removeoperation2.default ? undefined : a.baseVersion);\n\n\t\t\tresult.isSticky = a.isSticky;\n\t\t\tresult._holderElementOffset = a._holderElementOffset;\n\n\t\t\treturn [result];\n\t\t},\n\n\n\t\tAttributeOperation: doNotUpdate,\n\n\t\tRootAttributeOperation: doNotUpdate,\n\n\t\tRenameOperation: doNotUpdate,\n\n\t\tMarkerOperation: doNotUpdate,\n\n\t\t// Transforms MoveOperation `a` by MoveOperation `b`. Accepts a flag stating whether `a` is more important\n\t\t// than `b` when it comes to resolving conflicts. Returns results as an array of operations.\n\t\tMoveOperation: function MoveOperation(a, b, isStrong) {\n\t\t\t// Special case when both move operations' target positions are inside nodes that are\n\t\t\t// being moved by the other move operation. So in other words, we move ranges into inside of each other.\n\t\t\t// This case can't be solved reasonably (on the other hand, it should not happen often).\n\t\t\tif (moveTargetIntoMovedRange(a, b) && moveTargetIntoMovedRange(b, a)) {\n\t\t\t\t// Instead of transforming operation, we return a reverse of the operation that we transform by.\n\t\t\t\t// So when the results of this \"transformation\" will be applied, `b` MoveOperation will get reversed.\n\t\t\t\treturn [b.getReversed()];\n\t\t\t}\n\n\t\t\t// Special case when both operations are RemoveOperations. RemoveOperation not only moves nodes but also\n\t\t\t// (usually) creates a \"holder\" element for them in graveyard. Each RemoveOperation should move nodes to different\n\t\t\t// \"holder\" element. If `a` operation points after `b` operation, we move `a` offset to acknowledge\n\t\t\t// \"holder\" element insertion.\n\t\t\tif (a instanceof _removeoperation2.default && b instanceof _removeoperation2.default) {\n\t\t\t\tvar aTarget = a.targetPosition.path[0];\n\t\t\t\tvar bTarget = b.targetPosition.path[0];\n\n\t\t\t\tif (aTarget >= bTarget && isStrong) {\n\t\t\t\t\t// Do not change original operation!\n\t\t\t\t\ta = a.clone();\n\t\t\t\t\ta.targetPosition.path[0]++;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// If only one of operations is a remove operation, we force remove operation to be the \"stronger\" one\n\t\t\t// to provide more expected results.\n\t\t\tif (a instanceof _removeoperation2.default && !(b instanceof _removeoperation2.default)) {\n\t\t\t\tisStrong = true;\n\t\t\t} else if (!(a instanceof _removeoperation2.default) && b instanceof _removeoperation2.default) {\n\t\t\t\tisStrong = false;\n\t\t\t}\n\n\t\t\t// Create ranges from MoveOperations properties.\n\t\t\tvar rangeA = _range2.default.createFromPositionAndShift(a.sourcePosition, a.howMany);\n\t\t\tvar rangeB = _range2.default.createFromPositionAndShift(b.sourcePosition, b.howMany);\n\n\t\t\t// This will aggregate transformed ranges.\n\t\t\tvar ranges = [];\n\n\t\t\t// All the other non-special cases are treated by generic algorithm below.\n\t\t\tvar difference = joinRanges(rangeA.getDifference(rangeB));\n\n\t\t\tif (difference) {\n\t\t\t\tdifference.start = difference.start._getTransformedByMove(b.sourcePosition, b.targetPosition, b.howMany, !a.isSticky, false);\n\t\t\t\tdifference.end = difference.end._getTransformedByMove(b.sourcePosition, b.targetPosition, b.howMany, a.isSticky, false);\n\n\t\t\t\tranges.push(difference);\n\t\t\t}\n\n\t\t\t// Then, we have to manage the common part of both move ranges.\n\t\t\tvar common = rangeA.getIntersection(rangeB);\n\n\t\t\t// If MoveOperations has common range it can be one of two:\n\t\t\t// * on the same tree level - it means that we move the same nodes into different places\n\t\t\t// * on deeper tree level - it means that we move nodes that are inside moved nodes\n\t\t\t// The operations are conflicting only if they try to move exactly same nodes, so only in the first case.\n\t\t\t// That means that we transform common part in two cases:\n\t\t\t// * `rangeA` is \"deeper\" than `rangeB` so it does not collide\n\t\t\t// * `rangeA` is at the same level but is stronger than `rangeB`.\n\t\t\tvar aCompB = (0, _comparearrays2.default)(a.sourcePosition.getParentPath(), b.sourcePosition.getParentPath());\n\n\t\t\t// If the `b` MoveOperation points inside the `a` MoveOperation range, the common part will be included in\n\t\t\t// range(s) that (is) are results of processing `difference`. If that's the case, we cannot include it again.\n\t\t\tvar bTargetsToA = rangeA.containsPosition(b.targetPosition) || rangeA.start.isEqual(b.targetPosition) && a.isSticky || rangeA.end.isEqual(b.targetPosition) && a.isSticky;\n\n\t\t\t// If the `b` MoveOperation range contains both whole `a` range and target position we do an exception and\n\t\t\t// transform `a` operation. Normally, when same nodes are moved, we stick with stronger operation's target.\n\t\t\t// Here it is a move inside larger range so there is no conflict because after all, all nodes from\n\t\t\t// smaller range will be moved to larger range target. The effect of this transformation feels natural.\n\t\t\t// Also if we wouldn't do that, we would get different results on both sides of transformation (i.e. in\n\t\t\t// collaborative editing).\n\t\t\tvar aIsInside = rangeB.containsRange(rangeA) && (rangeB.containsPosition(a.targetPosition) || rangeB.start.isEqual(a.targetPosition) || rangeB.end.isEqual(a.targetPosition));\n\n\t\t\tif (common !== null && (aCompB === 'extension' || aCompB === 'same' && isStrong || aIsInside) && !bTargetsToA) {\n\t\t\t\t// Here we do not need to worry that newTargetPosition is inside moved range, because that\n\t\t\t\t// would mean that the MoveOperation targets into itself, and that is incorrect operation.\n\t\t\t\t// Instead, we calculate the new position of that part of original range.\n\t\t\t\tcommon.start = common.start._getCombined(b.sourcePosition, b.getMovedRangeStart());\n\t\t\t\tcommon.end = common.end._getCombined(b.sourcePosition, b.getMovedRangeStart());\n\n\t\t\t\t// We have to take care of proper range order.\n\t\t\t\tif (difference && rangeA.start.isBefore(rangeB.start)) {\n\t\t\t\t\tranges.push(common);\n\t\t\t\t} else {\n\t\t\t\t\tranges.unshift(common);\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// At this point we transformed this operation's source ranges it means that nothing should be changed.\n\t\t\t// But since we need to return an instance of Operation we return an array with NoOperation.\n\t\t\tif (ranges.length === 0) {\n\t\t\t\tif (a instanceof _removeoperation2.default) {\n\t\t\t\t\t// If `a` operation was RemoveOperation, we cannot convert it to NoOperation.\n\t\t\t\t\t// This is because RemoveOperation creates a holder in graveyard.\n\t\t\t\t\t// Even if we \"remove nothing\" we need a RemoveOperation to create holder element\n\t\t\t\t\t// so that the tree structure is synchronised between clients.\n\t\t\t\t\t// Note that this can happen only if both operations are remove operations, because in\n\t\t\t\t\t// other case RemoveOperation would be forced to be stronger and there would be a common range to move.\n\t\t\t\t\ta = a.clone();\n\t\t\t\t\ta.howMany = 0;\n\t\t\t\t\ta.sourcePosition = b.targetPosition;\n\n\t\t\t\t\treturn [a];\n\t\t\t\t} else {\n\t\t\t\t\treturn [new _nooperation2.default(a.baseVersion)];\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Target position also could be affected by the other MoveOperation. We will transform it.\n\t\t\tvar newTargetPosition = a.targetPosition._getTransformedByMove(b.sourcePosition, b.targetPosition, b.howMany, !isStrong, b.isSticky || aIsInside);\n\n\t\t\t// Map transformed range(s) to operations and return them.\n\t\t\treturn ranges.reverse().map(function (range) {\n\t\t\t\t// We want to keep correct operation class.\n\t\t\t\tvar result = new a.constructor(range.start, range.end.offset - range.start.offset, a instanceof _removeoperation2.default ? a.baseVersion : newTargetPosition, a instanceof _removeoperation2.default ? undefined : a.baseVersion);\n\n\t\t\t\tresult.isSticky = a.isSticky;\n\t\t\t\tresult._holderElementOffset = a._holderElementOffset;\n\n\t\t\t\treturn result;\n\t\t\t});\n\t\t}\n\t}\n};\n\nfunction transform(a, b, isStrong) {\n\tvar group = void 0;\n\tvar algorithm = void 0;\n\n\tif (a instanceof _insertoperation2.default) {\n\t\tgroup = ot.InsertOperation;\n\t} else if (a instanceof _attributeoperation2.default) {\n\t\tgroup = ot.AttributeOperation;\n\t} else if (a instanceof _rootattributeoperation2.default) {\n\t\tgroup = ot.RootAttributeOperation;\n\t} else if (a instanceof _renameoperation2.default) {\n\t\tgroup = ot.RenameOperation;\n\t} else if (a instanceof _markeroperation2.default) {\n\t\tgroup = ot.MarkerOperation;\n\t} else if (a instanceof _moveoperation2.default) {\n\t\tgroup = ot.MoveOperation;\n\t} else {\n\t\talgorithm = doNotUpdate;\n\t}\n\n\tif (group) {\n\t\tif (b instanceof _insertoperation2.default) {\n\t\t\talgorithm = group.InsertOperation;\n\t\t} else if (b instanceof _attributeoperation2.default) {\n\t\t\talgorithm = group.AttributeOperation;\n\t\t} else if (b instanceof _rootattributeoperation2.default) {\n\t\t\talgorithm = group.RootAttributeOperation;\n\t\t} else if (b instanceof _renameoperation2.default) {\n\t\t\talgorithm = group.RenameOperation;\n\t\t} else if (b instanceof _markeroperation2.default) {\n\t\t\talgorithm = group.MarkerOperation;\n\t\t} else if (b instanceof _moveoperation2.default) {\n\t\t\talgorithm = group.MoveOperation;\n\t\t} else {\n\t\t\talgorithm = doNotUpdate;\n\t\t}\n\t}\n\n\tvar transformed = algorithm(a, b, isStrong);\n\n\treturn updateBaseVersions(a.baseVersion, transformed);\n}\n\n// When we don't want to update an operation, we create and return a clone of it.\n// Returns the operation in \"unified format\" - wrapped in an Array.\nfunction doNotUpdate(operation) {\n\treturn [operation.clone()];\n}\n\n// Takes an Array of operations and sets consecutive base versions for them, starting from given base version.\n// Returns the passed array.\nfunction updateBaseVersions(baseVersion, operations) {\n\tfor (var i = 0; i < operations.length; i++) {\n\t\toperations[i].baseVersion = baseVersion + i + 1;\n\t}\n\n\treturn operations;\n}\n\n// Checks whether MoveOperation targetPosition is inside a node from the moved range of the other MoveOperation.\nfunction moveTargetIntoMovedRange(a, b) {\n\treturn a.targetPosition._getTransformedByDeletion(b.sourcePosition, b.howMany) === null;\n}\n\n// Gets an array of Ranges and produces one Range out of it. The root of a new range will be same as\n// the root of the first range in the array. If any of given ranges has different root than the first range,\n// it will be discarded.\nfunction joinRanges(ranges) {\n\tif (ranges.length === 0) {\n\t\treturn null;\n\t} else if (ranges.length == 1) {\n\t\treturn ranges[0];\n\t} else {\n\t\tranges[0].end = ranges[ranges.length - 1].end;\n\n\t\treturn ranges[0];\n\t}\n}\n\n/***/ }),\n/* 319 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\nexports.SchemaItem = undefined;\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module engine/model/schema\n */\n\nvar _position = __webpack_require__(1);\n\nvar _position2 = _interopRequireDefault(_position);\n\nvar _element = __webpack_require__(5);\n\nvar _element2 = _interopRequireDefault(_element);\n\nvar _clone = __webpack_require__(94);\n\nvar _clone2 = _interopRequireDefault(_clone);\n\nvar _isArray = __webpack_require__(11);\n\nvar _isArray2 = _interopRequireDefault(_isArray);\n\nvar _isString = __webpack_require__(149);\n\nvar _isString2 = _interopRequireDefault(_isString);\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * Schema is a definition of the structure of the document. It allows to define which tree model items (element, text, etc.)\n * can be nested within which ones and which attributes can be applied to them. It's created during the run-time of the application,\n * typically by features. Also, the features can query the schema to learn what structure is allowed and act accordingly.\n *\n * For instance, if a feature wants to define that an attribute bold is allowed on the text it needs to register this rule like this:\n *\n *\t\teditor.document.schema.allow( '$text', 'bold' );\n *\n * Note: items prefixed with `$` are special group of items. By default, `Schema` defines three special items:\n *\n * * `$inline` represents all inline elements,\n * * `$text` is a sub-group of `$inline` and represents text nodes,\n * * `$block` represents block elements,\n * * `$root` represents default editing roots (those that allow only `$block`s inside them).\n *\n * When registering an item it's possible to tell that this item should inherit from some other existing item.\n * E.g. `p` can inherit from `$block`, so whenever given attribute is allowed on the `$block` it will automatically be\n * also allowed on the `p` element. By default, `$text` item already inherits from `$inline`.\n */\nvar Schema = function () {\n\t/**\n  * Creates Schema instance.\n  */\n\tfunction Schema() {\n\t\t_classCallCheck(this, Schema);\n\n\t\t/**\n   * Names of elements which have \"object\" nature. This means that these\n   * elements should be treated as whole, never merged, can be selected from outside, etc.\n   * Just like images, placeholder widgets, etc.\n   *\n   * @member {Set.<String>} module:engine/model/schema~Schema#objects\n   */\n\t\tthis.objects = new Set();\n\n\t\t/**\n   * Names of elements to which editing operations should be limited.\n   * For example, the <kbd>Enter</kbd> should not split such elements and\n   * <kbd>Backspace</kbd> should not be able to leave or modify such elements.\n   *\n   * @member {Set.<String>} module:engine/model/schema~Schema#limits\n   */\n\t\tthis.limits = new Set();\n\n\t\t/**\n   * Schema items registered in the schema.\n   *\n   * @private\n   * @member {Map} module:engine/model/schema~Schema#_items\n   */\n\t\tthis._items = new Map();\n\n\t\t/**\n   * Description of what entities are a base for given entity.\n   *\n   * @private\n   * @member {Map} module:engine/model/schema~Schema#_extensionChains\n   */\n\t\tthis._extensionChains = new Map();\n\n\t\t// Register some default abstract entities.\n\t\tthis.registerItem('$root');\n\t\tthis.registerItem('$block');\n\t\tthis.registerItem('$inline');\n\t\tthis.registerItem('$text', '$inline');\n\n\t\tthis.allow({ name: '$block', inside: '$root' });\n\t\tthis.allow({ name: '$inline', inside: '$block' });\n\n\t\t// TMP!\n\t\t// Create an \"all allowed\" context in the schema for processing the pasted content.\n\t\t// Read: https://github.com/ckeditor/ckeditor5-engine/issues/638#issuecomment-255086588\n\n\t\tthis.registerItem('$clipboardHolder', '$root');\n\t\tthis.allow({ name: '$inline', inside: '$clipboardHolder' });\n\t}\n\n\t/**\n  * Allows given query in the schema.\n  *\n  *\t\t// Allow text with bold attribute in all P elements.\n  *\t\tschema.registerItem( 'p', '$block' );\n  *\t\tschema.allow( { name: '$text', attributes: 'bold', inside: 'p' } );\n  *\n  *\t\t// Allow header in Ps that are in DIVs\n  *\t\tschema.registerItem( 'header', '$block' );\n  *\t\tschema.registerItem( 'div', '$block' );\n  *\t\tschema.allow( { name: 'header', inside: 'div p' } ); // inside: [ 'div', 'p' ] would also work.\n  *\n  * @param {module:engine/model/schema~SchemaQuery} query Allowed query.\n  */\n\n\n\t_createClass(Schema, [{\n\t\tkey: 'allow',\n\t\tvalue: function allow(query) {\n\t\t\tthis._getItem(query.name).allow(Schema._normalizeQueryPath(query.inside), query.attributes);\n\t\t}\n\n\t\t/**\n   * Disallows given query in the schema.\n   *\n   * @see #allow\n   * @param {module:engine/model/schema~SchemaQuery} query Disallowed query.\n   */\n\n\t}, {\n\t\tkey: 'disallow',\n\t\tvalue: function disallow(query) {\n\t\t\tthis._getItem(query.name).disallow(Schema._normalizeQueryPath(query.inside), query.attributes);\n\t\t}\n\n\t\t/**\n   * Makes a requirement in schema that entity represented by given item has to have given set of attributes. Some\n   * elements in the model might require some attributes to be set. If multiple sets of attributes are required it\n   * is enough that the entity fulfills only one set.\n   *\n   *\t\t// \"a\" element must either have \"href\" attribute or \"name\" attribute\n   *\t\tschema.requireAttributes( 'a', [ 'href' ] );\n   *\t\tschema.requireAttributes( 'a', [ 'name' ] );\n   *\t\t// \"img\" element must have both \"src\" and \"alt\" attributes\n   *\t\tschema.requireAttributes( 'img', [ 'src', 'alt' ] );\n   *\n   * @param {String} name Entity name.\n   * @param {Array.<String>} attributes Attributes that has to be set on the entity to make it valid.\n   */\n\n\t}, {\n\t\tkey: 'requireAttributes',\n\t\tvalue: function requireAttributes(name, attributes) {\n\t\t\tthis._getItem(name).requireAttributes(attributes);\n\t\t}\n\n\t\t/**\n   * Checks whether given query is allowed in schema.\n   *\n   *\t\t// Check whether bold text is allowed in header element.\n   *\t\tlet query = {\n   *\t\t\tname: '$text',\n   *\t\t\tattributes: 'bold',\n   *\t\t\tinside: 'header'\n   *\t\t};\n   *\t\tif ( schema.check( query ) ) { ... }\n   *\n   *\t\t// Check whether bold and italic text can be placed at caret position.\n   *\t\tlet caretPos = editor.document.selection.getFirstPosition();\n   *\t\tlet query = {\n   *\t\t\tname: '$text',\n   *\t\t\tattributes: [ 'bold', 'italic' ],\n   *\t\t\tinside: caretPos\n   *\t\t};\n   *\t\tif ( schema.check( query ) ) { ... }\n   *\n   *\t\t// Check whether image with alt, src and title is allowed in given elements path.\n   *\t\tlet quoteElement = new Element( 'quote' );\n   *\t\tlet query = {\n   *\t\t\tname: 'img',\n   *\t\t\tattributes: [ 'alt', 'src', 'title' ],\n   *\t\t\t// It is possible to mix strings with elements.\n   *\t\t\t// Query will check whether \"img\" can be inside \"quoteElement\" that is inside a block element.\n   *\t\t\tinside: [ '$block', quoteElement ]\n   *\t\t};\n   *\t\tif ( schema.check( query ) ) { ... }\n   *\n   * @param {module:engine/model/schema~SchemaQuery} query Query to check.\n   * @returns {Boolean} `true` if given query is allowed in schema, `false` otherwise.\n   */\n\n\t}, {\n\t\tkey: 'check',\n\t\tvalue: function check(query) {\n\t\t\tvar _this = this;\n\n\t\t\tif (!this.hasItem(query.name)) {\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\t// If attributes property is a string or undefined, wrap it in an array for easier processing.\n\t\t\tif (!(0, _isArray2.default)(query.attributes)) {\n\t\t\t\tquery.attributes = [query.attributes];\n\t\t\t} else if (query.attributes.length === 0) {\n\t\t\t\t// To simplify algorithms, when a SchemaItem path is added \"without\" attribute, it is added with\n\t\t\t\t// attribute equal to undefined. This means that algorithms can work the same way for specified attributes\n\t\t\t\t// and no-atrtibutes, but we have to fill empty array with \"fake\" undefined value for algorithms reasons.\n\t\t\t\tquery.attributes.push(undefined);\n\t\t\t}\n\n\t\t\t// Normalize the path to an array of strings.\n\t\t\tvar path = Schema._normalizeQueryPath(query.inside);\n\n\t\t\t// Get extension chain of given item and retrieve all schema items that are extended by given item.\n\t\t\tvar schemaItems = this._extensionChains.get(query.name).map(function (name) {\n\t\t\t\treturn _this._getItem(name);\n\t\t\t});\n\n\t\t\t// First check if the query meets at required attributes for this item.\n\t\t\tif (!this._getItem(query.name)._checkRequiredAttributes(query.attributes)) {\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\t// If there is matching disallow path, this query is not valid with schema.\n\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\tvar _didIteratorError = false;\n\t\t\tvar _iteratorError = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator = query.attributes[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\tvar attribute = _step.value;\n\t\t\t\t\tvar _iteratorNormalCompletion3 = true;\n\t\t\t\t\tvar _didIteratorError3 = false;\n\t\t\t\t\tvar _iteratorError3 = undefined;\n\n\t\t\t\t\ttry {\n\t\t\t\t\t\tfor (var _iterator3 = schemaItems[Symbol.iterator](), _step3; !(_iteratorNormalCompletion3 = (_step3 = _iterator3.next()).done); _iteratorNormalCompletion3 = true) {\n\t\t\t\t\t\t\tvar schemaItem = _step3.value;\n\n\t\t\t\t\t\t\tif (schemaItem._hasMatchingPath('disallow', path, attribute)) {\n\t\t\t\t\t\t\t\treturn false;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t} catch (err) {\n\t\t\t\t\t\t_didIteratorError3 = true;\n\t\t\t\t\t\t_iteratorError3 = err;\n\t\t\t\t\t} finally {\n\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\tif (!_iteratorNormalCompletion3 && _iterator3.return) {\n\t\t\t\t\t\t\t\t_iterator3.return();\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} finally {\n\t\t\t\t\t\t\tif (_didIteratorError3) {\n\t\t\t\t\t\t\t\tthrow _iteratorError3;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\t// At this point, the query is not disallowed.\n\t\t\t\t// If there are correct allow paths that match the query, this query is valid with schema.\n\t\t\t\t// Since we are supporting multiple attributes, we have to make sure that if attributes are set,\n\t\t\t\t// we have allowed paths for all of them.\n\t\t\t\t// Keep in mind that if the query has no attributes, query.attribute was converted to an array\n\t\t\t\t// with a single `undefined` value. This fits the algorithm well.\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError = true;\n\t\t\t\t_iteratorError = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tvar _iteratorNormalCompletion2 = true;\n\t\t\tvar _didIteratorError2 = false;\n\t\t\tvar _iteratorError2 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator2 = query.attributes[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {\n\t\t\t\t\tvar _attribute = _step2.value;\n\n\t\t\t\t\tvar matched = false;\n\n\t\t\t\t\tvar _iteratorNormalCompletion4 = true;\n\t\t\t\t\tvar _didIteratorError4 = false;\n\t\t\t\t\tvar _iteratorError4 = undefined;\n\n\t\t\t\t\ttry {\n\t\t\t\t\t\tfor (var _iterator4 = schemaItems[Symbol.iterator](), _step4; !(_iteratorNormalCompletion4 = (_step4 = _iterator4.next()).done); _iteratorNormalCompletion4 = true) {\n\t\t\t\t\t\t\tvar _schemaItem = _step4.value;\n\n\t\t\t\t\t\t\tif (_schemaItem._hasMatchingPath('allow', path, _attribute)) {\n\t\t\t\t\t\t\t\tmatched = true;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\t// The attribute has not been matched, so it is not allowed by any schema item.\n\t\t\t\t\t\t// The query is disallowed.\n\t\t\t\t\t} catch (err) {\n\t\t\t\t\t\t_didIteratorError4 = true;\n\t\t\t\t\t\t_iteratorError4 = err;\n\t\t\t\t\t} finally {\n\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\tif (!_iteratorNormalCompletion4 && _iterator4.return) {\n\t\t\t\t\t\t\t\t_iterator4.return();\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} finally {\n\t\t\t\t\t\t\tif (_didIteratorError4) {\n\t\t\t\t\t\t\t\tthrow _iteratorError4;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t\tif (!matched) {\n\t\t\t\t\t\treturn false;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError2 = true;\n\t\t\t\t_iteratorError2 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion2 && _iterator2.return) {\n\t\t\t\t\t\t_iterator2.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError2) {\n\t\t\t\t\t\tthrow _iteratorError2;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn true;\n\t\t}\n\n\t\t/**\n   * Checks whether there is an item registered under given name in schema.\n   *\n   * @param itemName\n   * @returns {Boolean}\n   */\n\n\t}, {\n\t\tkey: 'hasItem',\n\t\tvalue: function hasItem(itemName) {\n\t\t\treturn this._items.has(itemName);\n\t\t}\n\n\t\t/**\n   * Registers given item name in schema.\n   *\n   *\t\t// Register P element that should be treated like all block elements.\n   *\t\tschema.registerItem( 'p', '$block' );\n   *\n   * @param {String} itemName Name to register.\n   * @param [isExtending] If set, new item will extend item with given name.\n   */\n\n\t}, {\n\t\tkey: 'registerItem',\n\t\tvalue: function registerItem(itemName, isExtending) {\n\t\t\tif (this.hasItem(itemName)) {\n\t\t\t\t/**\n     * Item with specified name already exists in schema.\n     *\n     * @error model-schema-item-exists\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('model-schema-item-exists: Item with specified name already exists in schema.');\n\t\t\t}\n\n\t\t\tif (!!isExtending && !this.hasItem(isExtending)) {\n\t\t\t\t/**\n     * Item with specified name does not exist in schema.\n     *\n     * @error model-schema-no-item\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('model-schema-no-item: Item with specified name does not exist in schema.');\n\t\t\t}\n\n\t\t\t// Create new SchemaItem and add it to the items store.\n\t\t\tthis._items.set(itemName, new SchemaItem(this));\n\n\t\t\t// Create an extension chain.\n\t\t\t// Extension chain has all item names that should be checked when that item is on path to check.\n\t\t\t// This simply means, that if item is not extending anything, it should have only itself in it's extension chain.\n\t\t\t// Since extending is not dynamic, we can simply get extension chain of extended item and expand it with registered name,\n\t\t\t// if the registered item is extending something.\n\t\t\tvar chain = this.hasItem(isExtending) ? this._extensionChains.get(isExtending).concat(itemName) : [itemName];\n\t\t\tthis._extensionChains.set(itemName, chain);\n\t\t}\n\n\t\t/**\n   * Checks whether item of given name is extending item of another given name.\n   *\n   * @param {String} childItemName Name of the child item.\n   * @param {String} parentItemName Name of the parent item.\n   * @returns {Boolean} `true` if child item extends parent item, `false` otherwise.\n   */\n\n\t}, {\n\t\tkey: 'itemExtends',\n\t\tvalue: function itemExtends(childItemName, parentItemName) {\n\t\t\tif (!this.hasItem(childItemName) || !this.hasItem(parentItemName)) {\n\t\t\t\t/**\n     * Item with specified name does not exist in schema.\n     *\n     * @error model-schema-no-item\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('model-schema-no-item: Item with specified name does not exist in schema.');\n\t\t\t}\n\n\t\t\tvar chain = this._extensionChains.get(childItemName);\n\n\t\t\treturn chain.some(function (itemName) {\n\t\t\t\treturn itemName == parentItemName;\n\t\t\t});\n\t\t}\n\n\t\t/**\n   * Returns {@link module:engine/model/schema~SchemaItem schema item} that was registered in the schema under given name.\n   * If item has not been found, throws error.\n   *\n   * @private\n   * @param {String} itemName Name to look for in schema.\n   * @returns {module:engine/model/schema~SchemaItem} Schema item registered under given name.\n   */\n\n\t}, {\n\t\tkey: '_getItem',\n\t\tvalue: function _getItem(itemName) {\n\t\t\tif (!this.hasItem(itemName)) {\n\t\t\t\t/**\n     * Item with specified name does not exist in schema.\n     *\n     * @error model-schema-no-item\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('model-schema-no-item: Item with specified name does not exist in schema.');\n\t\t\t}\n\n\t\t\treturn this._items.get(itemName);\n\t\t}\n\n\t\t/**\n   * Normalizes a path to an entity by converting it from {@link module:engine/model/schema~SchemaPath} to an array of strings.\n   *\n   * @protected\n   * @param {module:engine/model/schema~SchemaPath} path Path to normalize.\n   * @returns {Array.<String>} Normalized path.\n   */\n\n\t}], [{\n\t\tkey: '_normalizeQueryPath',\n\t\tvalue: function _normalizeQueryPath(path) {\n\t\t\tvar normalized = [];\n\n\t\t\tif ((0, _isArray2.default)(path)) {\n\t\t\t\tvar _iteratorNormalCompletion5 = true;\n\t\t\t\tvar _didIteratorError5 = false;\n\t\t\t\tvar _iteratorError5 = undefined;\n\n\t\t\t\ttry {\n\t\t\t\t\tfor (var _iterator5 = path[Symbol.iterator](), _step5; !(_iteratorNormalCompletion5 = (_step5 = _iterator5.next()).done); _iteratorNormalCompletion5 = true) {\n\t\t\t\t\t\tvar pathItem = _step5.value;\n\n\t\t\t\t\t\tif (pathItem instanceof _element2.default) {\n\t\t\t\t\t\t\tnormalized.push(pathItem.name);\n\t\t\t\t\t\t} else if ((0, _isString2.default)(pathItem)) {\n\t\t\t\t\t\t\tnormalized.push(pathItem);\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t} catch (err) {\n\t\t\t\t\t_didIteratorError5 = true;\n\t\t\t\t\t_iteratorError5 = err;\n\t\t\t\t} finally {\n\t\t\t\t\ttry {\n\t\t\t\t\t\tif (!_iteratorNormalCompletion5 && _iterator5.return) {\n\t\t\t\t\t\t\t_iterator5.return();\n\t\t\t\t\t\t}\n\t\t\t\t\t} finally {\n\t\t\t\t\t\tif (_didIteratorError5) {\n\t\t\t\t\t\t\tthrow _iteratorError5;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} else if (path instanceof _position2.default) {\n\t\t\t\tvar parent = path.parent;\n\n\t\t\t\twhile (parent !== null) {\n\t\t\t\t\tnormalized.push(parent.name);\n\t\t\t\t\tparent = parent.parent;\n\t\t\t\t}\n\n\t\t\t\tnormalized.reverse();\n\t\t\t} else if ((0, _isString2.default)(path)) {\n\t\t\t\tnormalized = path.split(' ');\n\t\t\t}\n\n\t\t\treturn normalized;\n\t\t}\n\t}]);\n\n\treturn Schema;\n}();\n\n/**\n * SchemaItem is a singular registry item in {@link module:engine/model/schema~Schema} that groups and holds allow/disallow rules for\n * one entity. This class is used internally in {@link module:engine/model/schema~Schema} and should not be used outside it.\n *\n * @see module:engine/model/schema~Schema\n * @protected\n */\n\n\nexports.default = Schema;\n\nvar SchemaItem = exports.SchemaItem = function () {\n\t/**\n  * Creates SchemaItem instance.\n  *\n  * @param {module:engine/model/schema~Schema} schema Schema instance that owns this item.\n  */\n\tfunction SchemaItem(schema) {\n\t\t_classCallCheck(this, SchemaItem);\n\n\t\t/**\n   * Schema instance that owns this item.\n   *\n   * @private\n   * @member {module:engine/model/schema~Schema} module:engine/model/schema~SchemaItem#_schema\n   */\n\t\tthis._schema = schema;\n\n\t\t/**\n   * Paths in which the entity, represented by this item, is allowed.\n   *\n   * @private\n   * @member {Array} module:engine/model/schema~SchemaItem#_allowed\n   */\n\t\tthis._allowed = [];\n\n\t\t/**\n   * Paths in which the entity, represented by this item, is disallowed.\n   *\n   * @private\n   * @member {Array} module:engine/model/schema~SchemaItem#_disallowed\n   */\n\t\tthis._disallowed = [];\n\n\t\t/**\n   * Attributes that are required by the entity represented by this item.\n   *\n   * @protected\n   * @member {Array} module:engine/model/schema~SchemaItem#_requiredAttributes\n   */\n\t\tthis._requiredAttributes = [];\n\t}\n\n\t/**\n  * Allows entity, represented by this item, to be in given path.\n  *\n  * @param {Array.<String>} path Path in which entity is allowed.\n  * @param {Array.<String>|String} [attributes] If set, this path will be used only for entities that have attribute(s) with this key.\n  */\n\n\n\t_createClass(SchemaItem, [{\n\t\tkey: 'allow',\n\t\tvalue: function allow(path, attributes) {\n\t\t\tthis._addPath('_allowed', path, attributes);\n\t\t}\n\n\t\t/**\n   * Disallows entity, represented by this item, to be in given path.\n   *\n   * @param {Array.<String>} path Path in which entity is disallowed.\n   * @param {Array.<String>|String} [attributes] If set, this path will be used only for entities that have an attribute(s) with this key.\n   */\n\n\t}, {\n\t\tkey: 'disallow',\n\t\tvalue: function disallow(path, attributes) {\n\t\t\tthis._addPath('_disallowed', path, attributes);\n\t\t}\n\n\t\t/**\n   * Specifies that the entity, to be valid, requires given attributes set. It is possible to register multiple\n   * different attributes set. If there are more than one attributes set required, the entity will be valid if\n   * at least one of them is fulfilled.\n   *\n   * @param {Array.<String>} attributes Attributes that has to be set on the entity to make it valid.\n   */\n\n\t}, {\n\t\tkey: 'requireAttributes',\n\t\tvalue: function requireAttributes(attributes) {\n\t\t\tthis._requiredAttributes.push(attributes);\n\t\t}\n\n\t\t/**\n   * Adds path to the SchemaItem instance.\n   *\n   * @private\n   * @param {String} member Name of the array member into which the path will be added. Possible values are `_allowed` or `_disallowed`.\n   * @param {Array.<String>} path Path to add.\n   * @param {Array.<String>|String} [attributes] If set, this path will be used only for entities that have attribute(s) with this key.\n   */\n\n\t}, {\n\t\tkey: '_addPath',\n\t\tvalue: function _addPath(member, path, attributes) {\n\t\t\tpath = path.slice();\n\n\t\t\tif (!(0, _isArray2.default)(attributes)) {\n\t\t\t\tattributes = [attributes];\n\t\t\t}\n\n\t\t\tvar _iteratorNormalCompletion6 = true;\n\t\t\tvar _didIteratorError6 = false;\n\t\t\tvar _iteratorError6 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator6 = attributes[Symbol.iterator](), _step6; !(_iteratorNormalCompletion6 = (_step6 = _iterator6.next()).done); _iteratorNormalCompletion6 = true) {\n\t\t\t\t\tvar attribute = _step6.value;\n\n\t\t\t\t\tthis[member].push({ path: path, attribute: attribute });\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError6 = true;\n\t\t\t\t_iteratorError6 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion6 && _iterator6.return) {\n\t\t\t\t\t\t_iterator6.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError6) {\n\t\t\t\t\t\tthrow _iteratorError6;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Returns all paths of given type that were previously registered in the item.\n   *\n   * @private\n   * @param {String} type Paths' type. Possible values are `allow` or `disallow`.\n   * @param {String} [attribute] If set, only paths registered for given attribute will be returned.\n   * @returns {Array} Paths registered in the item.\n   */\n\n\t}, {\n\t\tkey: '_getPaths',\n\t\tvalue: function _getPaths(type, attribute) {\n\t\t\tvar source = type === 'allow' ? this._allowed : this._disallowed;\n\t\t\tvar paths = [];\n\n\t\t\tvar _iteratorNormalCompletion7 = true;\n\t\t\tvar _didIteratorError7 = false;\n\t\t\tvar _iteratorError7 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator7 = source[Symbol.iterator](), _step7; !(_iteratorNormalCompletion7 = (_step7 = _iterator7.next()).done); _iteratorNormalCompletion7 = true) {\n\t\t\t\t\tvar item = _step7.value;\n\n\t\t\t\t\tif (item.attribute === attribute) {\n\t\t\t\t\t\tpaths.push(item.path);\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError7 = true;\n\t\t\t\t_iteratorError7 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion7 && _iterator7.return) {\n\t\t\t\t\t\t_iterator7.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError7) {\n\t\t\t\t\t\tthrow _iteratorError7;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn paths;\n\t\t}\n\n\t\t/**\n   * Checks whether given set of attributes fulfills required attributes of this item.\n   *\n   * @protected\n   * @see module:engine/model/schema~SchemaItem#requireAttributes\n   * @param {Array.<String>} attributesToCheck Attributes to check.\n   * @returns {Boolean} `true` if given set or attributes fulfills required attributes, `false` otherwise.\n   */\n\n\t}, {\n\t\tkey: '_checkRequiredAttributes',\n\t\tvalue: function _checkRequiredAttributes(attributesToCheck) {\n\t\t\tvar found = true;\n\n\t\t\tvar _iteratorNormalCompletion8 = true;\n\t\t\tvar _didIteratorError8 = false;\n\t\t\tvar _iteratorError8 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator8 = this._requiredAttributes[Symbol.iterator](), _step8; !(_iteratorNormalCompletion8 = (_step8 = _iterator8.next()).done); _iteratorNormalCompletion8 = true) {\n\t\t\t\t\tvar attributeSet = _step8.value;\n\n\t\t\t\t\tfound = true;\n\n\t\t\t\t\tvar _iteratorNormalCompletion9 = true;\n\t\t\t\t\tvar _didIteratorError9 = false;\n\t\t\t\t\tvar _iteratorError9 = undefined;\n\n\t\t\t\t\ttry {\n\t\t\t\t\t\tfor (var _iterator9 = attributeSet[Symbol.iterator](), _step9; !(_iteratorNormalCompletion9 = (_step9 = _iterator9.next()).done); _iteratorNormalCompletion9 = true) {\n\t\t\t\t\t\t\tvar attribute = _step9.value;\n\n\t\t\t\t\t\t\tif (attributesToCheck.indexOf(attribute) == -1) {\n\t\t\t\t\t\t\t\tfound = false;\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t} catch (err) {\n\t\t\t\t\t\t_didIteratorError9 = true;\n\t\t\t\t\t\t_iteratorError9 = err;\n\t\t\t\t\t} finally {\n\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\tif (!_iteratorNormalCompletion9 && _iterator9.return) {\n\t\t\t\t\t\t\t\t_iterator9.return();\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} finally {\n\t\t\t\t\t\t\tif (_didIteratorError9) {\n\t\t\t\t\t\t\t\tthrow _iteratorError9;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t\tif (found) {\n\t\t\t\t\t\tbreak;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError8 = true;\n\t\t\t\t_iteratorError8 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion8 && _iterator8.return) {\n\t\t\t\t\t\t_iterator8.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError8) {\n\t\t\t\t\t\tthrow _iteratorError8;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn found;\n\t\t}\n\n\t\t/**\n   * Checks whether this item has any registered path of given type that matches the provided path.\n   *\n   * @protected\n   * @param {String} type Paths' type. Possible values are `allow` or `disallow`.\n   * @param {Array.<String>} pathToCheck Path to check.\n   * @param {String} [attribute] If set, only paths registered for given attribute will be checked.\n   * @returns {Boolean} `true` if item has any registered matching path, `false` otherwise.\n   */\n\n\t}, {\n\t\tkey: '_hasMatchingPath',\n\t\tvalue: function _hasMatchingPath(type, pathToCheck, attribute) {\n\t\t\tvar registeredPaths = this._getPaths(type, attribute);\n\n\t\t\tvar _iteratorNormalCompletion10 = true;\n\t\t\tvar _didIteratorError10 = false;\n\t\t\tvar _iteratorError10 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator10 = registeredPaths[Symbol.iterator](), _step10; !(_iteratorNormalCompletion10 = (_step10 = _iterator10.next()).done); _iteratorNormalCompletion10 = true) {\n\t\t\t\t\tvar registeredPathPath = _step10.value;\n\n\t\t\t\t\tif (matchPaths(this._schema, pathToCheck, registeredPathPath)) {\n\t\t\t\t\t\treturn true;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError10 = true;\n\t\t\t\t_iteratorError10 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion10 && _iterator10.return) {\n\t\t\t\t\t\t_iterator10.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError10) {\n\t\t\t\t\t\tthrow _iteratorError10;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn false;\n\t\t}\n\n\t\t/**\n   * Custom toJSON method to solve child-parent circular dependencies.\n   *\n   * @returns {Object} Clone of this object with the parent property replaced with its name.\n   */\n\n\t}, {\n\t\tkey: 'toJSON',\n\t\tvalue: function toJSON() {\n\t\t\tvar json = (0, _clone2.default)(this);\n\n\t\t\t// Due to circular references we need to remove parent reference.\n\t\t\tjson._schema = '[model.Schema]';\n\n\t\t\treturn json;\n\t\t}\n\t}]);\n\n\treturn SchemaItem;\n}();\n\n/**\n * Object with query used by {@link module:engine/model/schema~Schema} to query schema or add allow/disallow rules to schema.\n *\n * @typedef {Object} module:engine/model/schema~SchemaQuery\n * @property {String} name Entity name.\n * @property {module:engine/model/schema~SchemaPath} inside Path inside which the entity is placed.\n * @property {Array.<String>|String} [attributes] If set, the query applies only to entities that has attribute(s) with given key.\n */\n\n/**\n * Path to an entity, begins from the top-most ancestor. Can be passed in multiple formats. Internally, normalized to\n * an array of strings. If string is passed, entities from the path should be divided by ` ` (space character). If\n * an array is passed, unrecognized items are skipped. If position is passed, it is assumed that the entity is at given position.\n *\n * @typedef {String|Array.<String|module:engine/model/element~Element>|module:engine/model/position~Position}\n * module:engine/model/schema~SchemaPath\n */\n\n// Checks whether the given pathToCheck and registeredPath right ends match.\n//\n// pathToCheck: C, D\n// registeredPath: A, B, C, D\n// result: OK\n//\n// pathToCheck: A, B, C\n// registeredPath: A, B, C, D\n// result: NOK\n//\n// Note – when matching paths, element extension chains (inheritance) are taken into consideration.\n//\n// @param {Schema} schema\n// @param {Array.<String>} pathToCheck\n// @param {Array.<String>} registeredPath\n\n\nfunction matchPaths(schema, pathToCheck, registeredPath) {\n\t// Start checking from the right end of both tables.\n\tvar registeredPathIndex = registeredPath.length - 1;\n\tvar pathToCheckIndex = pathToCheck.length - 1;\n\n\t// And finish once reaching an end of the shorter table.\n\twhile (registeredPathIndex >= 0 && pathToCheckIndex >= 0) {\n\t\tvar checkName = pathToCheck[pathToCheckIndex];\n\n\t\t// Fail when checking a path which contains element which aren't even registered to the schema.\n\t\tif (!schema.hasItem(checkName)) {\n\t\t\treturn false;\n\t\t}\n\n\t\tvar extChain = schema._extensionChains.get(checkName);\n\n\t\tif (extChain.includes(registeredPath[registeredPathIndex])) {\n\t\t\tregisteredPathIndex--;\n\t\t\tpathToCheckIndex--;\n\t\t} else {\n\t\t\treturn false;\n\t\t}\n\t}\n\n\treturn true;\n}\n\n/***/ }),\n/* 320 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _slicedToArray = function () { function sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i[\"return\"]) _i[\"return\"](); } finally { if (_d) throw _e; } } return _arr; } return function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return sliceIterator(arr, i); } else { throw new TypeError(\"Invalid attempt to destructure non-iterable instance\"); } }; }();\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module engine/view/document\n */\n\nvar _selection = __webpack_require__(75);\n\nvar _selection2 = _interopRequireDefault(_selection);\n\nvar _renderer = __webpack_require__(327);\n\nvar _renderer2 = _interopRequireDefault(_renderer);\n\nvar _domconverter = __webpack_require__(167);\n\nvar _domconverter2 = _interopRequireDefault(_domconverter);\n\nvar _rooteditableelement = __webpack_require__(170);\n\nvar _rooteditableelement2 = _interopRequireDefault(_rooteditableelement);\n\nvar _filler = __webpack_require__(57);\n\nvar _log = __webpack_require__(54);\n\nvar _log2 = _interopRequireDefault(_log);\n\nvar _mutationobserver = __webpack_require__(169);\n\nvar _mutationobserver2 = _interopRequireDefault(_mutationobserver);\n\nvar _selectionobserver = __webpack_require__(326);\n\nvar _selectionobserver2 = _interopRequireDefault(_selectionobserver);\n\nvar _focusobserver = __webpack_require__(323);\n\nvar _focusobserver2 = _interopRequireDefault(_focusobserver);\n\nvar _keyobserver = __webpack_require__(324);\n\nvar _keyobserver2 = _interopRequireDefault(_keyobserver);\n\nvar _fakeselectionobserver = __webpack_require__(322);\n\nvar _fakeselectionobserver2 = _interopRequireDefault(_fakeselectionobserver);\n\nvar _mix = __webpack_require__(4);\n\nvar _mix2 = _interopRequireDefault(_mix);\n\nvar _observablemixin = __webpack_require__(31);\n\nvar _observablemixin2 = _interopRequireDefault(_observablemixin);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * Document class creates an abstract layer over the content editable area.\n * It combines the actual tree of view elements, tree of DOM elements,\n * {@link module:engine/view/domconverter~DomConverter DOM Converter}, {@link module:engine/view/renderer~Renderer renderer} and all\n * {@link module:engine/view/observer/observer~Observer observers}.\n *\n * If you want to only transform the tree of view elements to the DOM elements you can use the\n * {@link module:engine/view/domconverter~DomConverter DomConverter}.\n *\n * Note that the following observers are added by the class constructor and are always available:\n *\n * * {@link module:engine/view/observer/mutationobserver~MutationObserver},\n * * {@link module:engine/view/observer/selectionobserver~SelectionObserver},\n * * {@link module:engine/view/observer/focusobserver~FocusObserver},\n * * {@link module:engine/view/observer/keyobserver~KeyObserver},\n * * {@link module:engine/view/observer/fakeselectionobserver~FakeSelectionObserver}.\n *\n * @mixes module:utils/observablemixin~ObservableMixin\n */\nvar Document = function () {\n\t/**\n  * Creates a Document instance.\n  */\n\tfunction Document() {\n\t\tvar _this = this;\n\n\t\t_classCallCheck(this, Document);\n\n\t\t/**\n   * Roots of the DOM tree. Map on the `HTMLElement`s with roots names as keys.\n   *\n   * @readonly\n   * @member {Map} module:engine/view/document~Document#domRoots\n   */\n\t\tthis.domRoots = new Map();\n\n\t\t/**\n   * Selection done on this document.\n   *\n   * @readonly\n   * @member {module:engine/view/selection~Selection} module:engine/view/document~Document#selection\n   */\n\t\tthis.selection = new _selection2.default();\n\n\t\t/**\n   * Instance of the {@link module:engine/view/domconverter~DomConverter domConverter} use by\n   * {@link module:engine/view/document~Document#renderer renderer} and {@link module:engine/view/observer/observer~Observer observers}.\n   *\n   * @readonly\n   * @member {module:engine/view/domconverter~DomConverter} module:engine/view/document~Document#domConverter\n   */\n\t\tthis.domConverter = new _domconverter2.default();\n\n\t\t/**\n   * Roots of the view tree. Map of the {module:engine/view/element~Element view elements} with roots names as keys.\n   *\n   * @readonly\n   * @member {Map} module:engine/view/document~Document#roots\n   */\n\t\tthis.roots = new Map();\n\n\t\t/**\n   * True if document is focused.\n   *\n   * This property is updated by the {@link module:engine/view/observer/focusobserver~FocusObserver}.\n   * If the {@link module:engine/view/observer/focusobserver~FocusObserver} is disabled this property will not change.\n   *\n   * @readonly\n   * @observable\n   * @member {Boolean} module:engine/view/document~Document#isFocused\n   */\n\t\tthis.set('isFocused', false);\n\n\t\t/**\n   * Instance of the {@link module:engine/view/document~Document#renderer renderer}.\n   *\n   * @readonly\n   * @member {module:engine/view/renderer~Renderer} module:engine/view/document~Document#renderer\n   */\n\t\tthis.renderer = new _renderer2.default(this.domConverter, this.selection);\n\t\tthis.renderer.bind('isFocused').to(this, 'isFocused');\n\n\t\t/**\n   * Map of registered {@link module:engine/view/observer/observer~Observer observers}.\n   *\n   * @private\n   * @member {Map.<Function, module:engine/view/observer/observer~Observer>} module:engine/view/document~Document#_observers\n   */\n\t\tthis._observers = new Map();\n\n\t\t// Add default observers.\n\t\tthis.addObserver(_mutationobserver2.default);\n\t\tthis.addObserver(_selectionobserver2.default);\n\t\tthis.addObserver(_focusobserver2.default);\n\t\tthis.addObserver(_keyobserver2.default);\n\t\tthis.addObserver(_fakeselectionobserver2.default);\n\n\t\t(0, _filler.injectQuirksHandling)(this);\n\n\t\t// Listens `render` event on default priority.\n\t\t// This way we can attach other listeners before or after rendering execution.\n\t\tthis.on('render', function () {\n\t\t\t_this.disableObservers();\n\t\t\t_this.renderer.render();\n\t\t\t_this.enableObservers();\n\t\t});\n\t}\n\n\t/**\n  * Creates observer of the given type if not yet created, {@link module:engine/view/observer/observer~Observer#enable enables} it\n  * and {@link module:engine/view/observer/observer~Observer#observe attaches} to all existing and future\n  * {@link module:engine/view/document~Document#domRoots DOM roots}.\n  *\n  * Note: Observers are recognized by their constructor (classes). A single observer will be instantiated and used only\n  * when registered for the first time. This means that features and other components can register a single observer\n  * multiple times without caring whether it has been already added or not.\n  *\n  * @param {Function} Observer The constructor of an observer to add.\n  * Should create an instance inheriting from {@link module:engine/view/observer/observer~Observer}.\n  * @returns {module:engine/view/observer/observer~Observer} Added observer instance.\n  */\n\n\n\t_createClass(Document, [{\n\t\tkey: 'addObserver',\n\t\tvalue: function addObserver(Observer) {\n\t\t\tvar observer = this._observers.get(Observer);\n\n\t\t\tif (observer) {\n\t\t\t\treturn observer;\n\t\t\t}\n\n\t\t\tobserver = new Observer(this);\n\n\t\t\tthis._observers.set(Observer, observer);\n\n\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\tvar _didIteratorError = false;\n\t\t\tvar _iteratorError = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator = this.domRoots[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\tvar _step$value = _slicedToArray(_step.value, 2),\n\t\t\t\t\t    name = _step$value[0],\n\t\t\t\t\t    domElement = _step$value[1];\n\n\t\t\t\t\tobserver.observe(domElement, name);\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError = true;\n\t\t\t\t_iteratorError = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tobserver.enable();\n\n\t\t\treturn observer;\n\t\t}\n\n\t\t/**\n   * Returns observer of the given type or `undefined` if such observer has not been added yet.\n   *\n   * @param {Function} Observer The constructor of an observer to get.\n   * @returns {module:engine/view/observer/observer~Observer|undefined} Observer instance or undefined.\n   */\n\n\t}, {\n\t\tkey: 'getObserver',\n\t\tvalue: function getObserver(Observer) {\n\t\t\treturn this._observers.get(Observer);\n\t\t}\n\n\t\t/**\n   * Creates a {@link module:engine/view/document~Document#roots view root element}.\n   *\n   * If the DOM element is passed as a first parameter it will be automatically\n   * {@link module:engine/view/document~Document#attachDomRoot attached}:\n   *\n   *\t\tdocument.createRoot( document.querySelector( 'div#editor' ) ); // Will call document.attachDomRoot.\n   *\n   * However, if the string is passed, then only the view element will be created and the DOM element have to be\n   * attached separately:\n   *\n   *\t\tdocument.createRoot( 'body' );\n   *\t\tdocument.attachDomRoot( document.querySelector( 'body#editor' ) );\n   *\n   * In both cases, {@link module:engine/view/rooteditableelement~RootEditableElement#rootName element name} is always transformed to lower\n   * case.\n   *\n   * @param {Element|String} domRoot DOM root element or the tag name of view root element if the DOM element will be\n   * attached later.\n   * @param {String} [name='main'] Name of the root.\n   * @returns {module:engine/view/rooteditableelement~RootEditableElement} The created view root element.\n   */\n\n\t}, {\n\t\tkey: 'createRoot',\n\t\tvalue: function createRoot(domRoot) {\n\t\t\tvar _this2 = this;\n\n\t\t\tvar name = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 'main';\n\n\t\t\tvar rootTag = typeof domRoot == 'string' ? domRoot : domRoot.tagName;\n\n\t\t\tvar viewRoot = new _rooteditableelement2.default(rootTag.toLowerCase(), name);\n\t\t\tviewRoot.document = this;\n\n\t\t\tthis.roots.set(name, viewRoot);\n\n\t\t\t// Mark changed nodes in the renderer.\n\t\t\tviewRoot.on('change:children', function (evt, node) {\n\t\t\t\treturn _this2.renderer.markToSync('children', node);\n\t\t\t});\n\t\t\tviewRoot.on('change:attributes', function (evt, node) {\n\t\t\t\treturn _this2.renderer.markToSync('attributes', node);\n\t\t\t});\n\t\t\tviewRoot.on('change:text', function (evt, node) {\n\t\t\t\treturn _this2.renderer.markToSync('text', node);\n\t\t\t});\n\n\t\t\tif (this.domConverter.isElement(domRoot)) {\n\t\t\t\tthis.attachDomRoot(domRoot, name);\n\t\t\t}\n\n\t\t\treturn viewRoot;\n\t\t}\n\n\t\t/**\n   * Attaches DOM root element to the view element and enable all observers on that element. This method also\n   * {@link module:engine/view/renderer~Renderer#markToSync mark element} to be synchronized with the view what means that all child\n   * nodes will be removed and replaced with content of the view root.\n   *\n   * Note that {@link module:engine/view/document~Document#createRoot} will call this method automatically if the DOM element is\n   * passed to it.\n   *\n   * @param {Element|String} domRoot DOM root element.\n   * @param {String} [name='main'] Name of the root.\n   */\n\n\t}, {\n\t\tkey: 'attachDomRoot',\n\t\tvalue: function attachDomRoot(domRoot) {\n\t\t\tvar name = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 'main';\n\n\t\t\tvar viewRoot = this.getRoot(name);\n\n\t\t\tthis.domRoots.set(name, domRoot);\n\n\t\t\tthis.domConverter.bindElements(domRoot, viewRoot);\n\n\t\t\tthis.renderer.markToSync('children', viewRoot);\n\t\t\tthis.renderer.domDocuments.add(domRoot.ownerDocument);\n\n\t\t\tvar _iteratorNormalCompletion2 = true;\n\t\t\tvar _didIteratorError2 = false;\n\t\t\tvar _iteratorError2 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator2 = this._observers.values()[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {\n\t\t\t\t\tvar observer = _step2.value;\n\n\t\t\t\t\tobserver.observe(domRoot, name);\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError2 = true;\n\t\t\t\t_iteratorError2 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion2 && _iterator2.return) {\n\t\t\t\t\t\t_iterator2.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError2) {\n\t\t\t\t\t\tthrow _iteratorError2;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Gets a {@link module:engine/view/document~Document#roots view root element} with the specified name. If the name is not\n   * specific \"main\" root is returned.\n   *\n   * @param {String} [name='main'] Name of the root.\n   * @returns {module:engine/view/rooteditableelement~RootEditableElement} The view root element with the specified name.\n   */\n\n\t}, {\n\t\tkey: 'getRoot',\n\t\tvalue: function getRoot() {\n\t\t\tvar name = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 'main';\n\n\t\t\treturn this.roots.get(name);\n\t\t}\n\n\t\t/**\n   * Gets DOM root element.\n   *\n   * @param {String} [name='main']  Name of the root.\n   * @returns {Element} DOM root element instance.\n   */\n\n\t}, {\n\t\tkey: 'getDomRoot',\n\t\tvalue: function getDomRoot() {\n\t\t\tvar name = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 'main';\n\n\t\t\treturn this.domRoots.get(name);\n\t\t}\n\n\t\t/**\n   * Renders all changes. In order to avoid triggering the observers (e.g. mutations) all observers are disabled\n   * before rendering and re-enabled after that.\n   *\n   * @fires render\n   */\n\n\t}, {\n\t\tkey: 'render',\n\t\tvalue: function render() {\n\t\t\tthis.fire('render');\n\t\t}\n\n\t\t/**\n   * Focuses document. It will focus {@link module:engine/view/editableelement~EditableElement EditableElement} that is currently having\n   * selection inside.\n   */\n\n\t}, {\n\t\tkey: 'focus',\n\t\tvalue: function focus() {\n\t\t\tif (!this.isFocused) {\n\t\t\t\tvar editable = this.selection.editableElement;\n\n\t\t\t\tif (editable) {\n\t\t\t\t\tthis.domConverter.focus(editable);\n\t\t\t\t\tthis.render();\n\t\t\t\t} else {\n\t\t\t\t\t/**\n      * Before focusing view document, selection should be placed inside one of the view's editables.\n      * Normally its selection will be converted from model document (which have default selection), but\n      * when using view document on its own, we need to manually place selection before focusing it.\n      *\n      * @error view-focus-no-selection\n      */\n\t\t\t\t\t_log2.default.warn('view-focus-no-selection: There is no selection in any editable to focus.');\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Disables all added observers.\n   */\n\n\t}, {\n\t\tkey: 'disableObservers',\n\t\tvalue: function disableObservers() {\n\t\t\tvar _iteratorNormalCompletion3 = true;\n\t\t\tvar _didIteratorError3 = false;\n\t\t\tvar _iteratorError3 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator3 = this._observers.values()[Symbol.iterator](), _step3; !(_iteratorNormalCompletion3 = (_step3 = _iterator3.next()).done); _iteratorNormalCompletion3 = true) {\n\t\t\t\t\tvar observer = _step3.value;\n\n\t\t\t\t\tobserver.disable();\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError3 = true;\n\t\t\t\t_iteratorError3 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion3 && _iterator3.return) {\n\t\t\t\t\t\t_iterator3.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError3) {\n\t\t\t\t\t\tthrow _iteratorError3;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Enables all added observers.\n   */\n\n\t}, {\n\t\tkey: 'enableObservers',\n\t\tvalue: function enableObservers() {\n\t\t\tvar _iteratorNormalCompletion4 = true;\n\t\t\tvar _didIteratorError4 = false;\n\t\t\tvar _iteratorError4 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator4 = this._observers.values()[Symbol.iterator](), _step4; !(_iteratorNormalCompletion4 = (_step4 = _iterator4.next()).done); _iteratorNormalCompletion4 = true) {\n\t\t\t\t\tvar observer = _step4.value;\n\n\t\t\t\t\tobserver.enable();\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError4 = true;\n\t\t\t\t_iteratorError4 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion4 && _iterator4.return) {\n\t\t\t\t\t\t_iterator4.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError4) {\n\t\t\t\t\t\tthrow _iteratorError4;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Destroys all observers created by view `Document`.\n   */\n\n\t}, {\n\t\tkey: 'destroy',\n\t\tvalue: function destroy() {\n\t\t\tvar _iteratorNormalCompletion5 = true;\n\t\t\tvar _didIteratorError5 = false;\n\t\t\tvar _iteratorError5 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator5 = this._observers.values()[Symbol.iterator](), _step5; !(_iteratorNormalCompletion5 = (_step5 = _iterator5.next()).done); _iteratorNormalCompletion5 = true) {\n\t\t\t\t\tvar observer = _step5.value;\n\n\t\t\t\t\tobserver.destroy();\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError5 = true;\n\t\t\t\t_iteratorError5 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion5 && _iterator5.return) {\n\t\t\t\t\t\t_iterator5.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError5) {\n\t\t\t\t\t\tthrow _iteratorError5;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}]);\n\n\treturn Document;\n}();\n\nexports.default = Document;\n\n\n(0, _mix2.default)(Document, _observablemixin2.default);\n\n/**\n * Enum representing type of the change.\n *\n * Possible values:\n *\n * * `children` - for child list changes,\n * * `attributes` - for element attributes changes,\n * * `text` - for text nodes changes.\n *\n * @typedef {String} module:engine/view/document~ChangeType\n */\n\n/**\n * Fired when {@link #render render} method is called. Actual rendering is executed as a listener to\n * this event with default priority. This way other listeners can be used to run code before or after rendering.\n *\n * @event render\n */\n\n/***/ }),\n/* 321 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _domeventobserver = __webpack_require__(58);\n\nvar _domeventobserver2 = _interopRequireDefault(_domeventobserver);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module engine/view/observer/clickobserver\n */\n\n/**\n * {@link module:engine/view/document~Document#event:click Click} event observer.\n *\n * Note that this observer is not available by default. To make it available it needs to be added to\n * {@link module:engine/view/document~Document}\n * by a {@link module:engine/view/document~Document#addObserver} method.\n *\n * @extends module:engine/view/observer/domeventobserver~DomEventObserver\n */\nvar ClickObserver = function (_DomEventObserver) {\n  _inherits(ClickObserver, _DomEventObserver);\n\n  function ClickObserver(document) {\n    _classCallCheck(this, ClickObserver);\n\n    var _this = _possibleConstructorReturn(this, (ClickObserver.__proto__ || Object.getPrototypeOf(ClickObserver)).call(this, document));\n\n    _this.domEventType = 'click';\n    return _this;\n  }\n\n  _createClass(ClickObserver, [{\n    key: 'onDomEvent',\n    value: function onDomEvent(domEvent) {\n      this.fire(domEvent.type, domEvent);\n    }\n  }]);\n\n  return ClickObserver;\n}(_domeventobserver2.default);\n\n/**\n * Fired when one of the editables has been clicked.\n *\n * Introduced by {@link module:engine/view/observer/clickobserver~ClickObserver}.\n *\n * Note that this event is not available by default. To make it available\n * {@link module:engine/view/observer/clickobserver~ClickObserver} needs to be added\n * to {@link module:engine/view/document~Document} by a {@link module:engine/view/document~Document#addObserver} method.\n *\n * @see module:engine/view/observer/clickobserver~ClickObserver\n * @event module:engine/view/document~Document#event:click\n * @param {module:engine/view/observer/domeventdata~DomEventData} data Event data.\n */\n\n\nexports.default = ClickObserver;\n\n/***/ }),\n/* 322 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if (\"value\" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };\n\nvar _observer = __webpack_require__(47);\n\nvar _observer2 = _interopRequireDefault(_observer);\n\nvar _selection = __webpack_require__(75);\n\nvar _selection2 = _interopRequireDefault(_selection);\n\nvar _keyboard = __webpack_require__(21);\n\nvar _debounce = __webpack_require__(143);\n\nvar _debounce2 = _interopRequireDefault(_debounce);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module engine/view/observer/fakeselectionobserver\n */\n\n/**\n * Fake selection observer class. If view selection is fake it is placed in dummy DOM container. This observer listens\n * on {@link module:engine/view/document~Document#event:keydown keydown} events and handles moving fake view selection to the correct place\n * if arrow keys are pressed.\n * Fires {@link module:engine/view/document~Document#event:selectionChange selectionChange event} simulating natural behaviour of\n * {@link module:engine/view/observer/selectionobserver~SelectionObserver SelectionObserver}.\n *\n * @extends module:engine/view/observer/observer~Observer.Observer\n */\nvar FakeSelectionObserver = function (_Observer) {\n\t_inherits(FakeSelectionObserver, _Observer);\n\n\t/**\n  * Creates new FakeSelectionObserver instance.\n  *\n  * @param {module:engine/view/document~Document} document\n  */\n\tfunction FakeSelectionObserver(document) {\n\t\t_classCallCheck(this, FakeSelectionObserver);\n\n\t\t/**\n   * Fires debounced event `selectionChangeDone`. It uses `lodash#debounce` method to delay function call.\n   *\n   * @private\n   * @param {Object} data Selection change data.\n   * @method #_fireSelectionChangeDoneDebounced\n   */\n\t\tvar _this = _possibleConstructorReturn(this, (FakeSelectionObserver.__proto__ || Object.getPrototypeOf(FakeSelectionObserver)).call(this, document));\n\n\t\t_this._fireSelectionChangeDoneDebounced = (0, _debounce2.default)(function (data) {\n\t\t\treturn _this.document.fire('selectionChangeDone', data);\n\t\t}, 200);\n\t\treturn _this;\n\t}\n\n\t/**\n  * @inheritDoc\n  */\n\n\n\t_createClass(FakeSelectionObserver, [{\n\t\tkey: 'observe',\n\t\tvalue: function observe() {\n\t\t\tvar _this2 = this;\n\n\t\t\tvar document = this.document;\n\n\t\t\tdocument.on('keydown', function (eventInfo, data) {\n\t\t\t\tvar selection = document.selection;\n\n\t\t\t\tif (selection.isFake && _isArrowKeyCode(data.keyCode) && _this2.isEnabled) {\n\t\t\t\t\t// Prevents default key down handling - no selection change will occur.\n\t\t\t\t\tdata.preventDefault();\n\n\t\t\t\t\t_this2._handleSelectionMove(data.keyCode);\n\t\t\t\t}\n\t\t\t}, { priority: 'lowest' });\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: 'destroy',\n\t\tvalue: function destroy() {\n\t\t\t_get(FakeSelectionObserver.prototype.__proto__ || Object.getPrototypeOf(FakeSelectionObserver.prototype), 'destroy', this).call(this);\n\n\t\t\tthis._fireSelectionChangeDoneDebounced.cancel();\n\t\t}\n\n\t\t/**\n   * Handles collapsing view selection according to given key code. If left or up key is provided - new selection will be\n   * collapsed to left. If right or down key is pressed - new selection will be collapsed to right.\n   *\n   * This method fires {@link module:engine/view/document~Document#event:selectionChange} and\n   * {@link module:engine/view/document~Document#event:selectionChangeDone} events imitating behaviour of\n   * {@link module:engine/view/observer/selectionobserver~SelectionObserver}.\n   *\n   * @private\n   * @param {Number} keyCode\n   * @fires module:engine/view/document~Document#event:selectionChange\n   * @fires module:engine/view/document~Document#event:selectionChangeDone\n   */\n\n\t}, {\n\t\tkey: '_handleSelectionMove',\n\t\tvalue: function _handleSelectionMove(keyCode) {\n\t\t\tvar selection = this.document.selection;\n\t\t\tvar newSelection = _selection2.default.createFromSelection(selection);\n\t\t\tnewSelection.setFake(false);\n\n\t\t\t// Left or up arrow pressed - move selection to start.\n\t\t\tif (keyCode == _keyboard.keyCodes.arrowleft || keyCode == _keyboard.keyCodes.arrowup) {\n\t\t\t\tnewSelection.collapseToStart();\n\t\t\t}\n\n\t\t\t// Right or down arrow pressed - move selection to end.\n\t\t\tif (keyCode == _keyboard.keyCodes.arrowright || keyCode == _keyboard.keyCodes.arrowdown) {\n\t\t\t\tnewSelection.collapseToEnd();\n\t\t\t}\n\n\t\t\tvar data = {\n\t\t\t\toldSelection: selection,\n\t\t\t\tnewSelection: newSelection,\n\t\t\t\tdomSelection: null\n\t\t\t};\n\n\t\t\t// Fire dummy selection change event.\n\t\t\tthis.document.fire('selectionChange', data);\n\n\t\t\t// Call` #_fireSelectionChangeDoneDebounced` every time when `selectionChange` event is fired.\n\t\t\t// This function is debounced what means that `selectionChangeDone` event will be fired only when\n\t\t\t// defined int the function time will elapse since the last time the function was called.\n\t\t\t// So `selectionChangeDone` will be fired when selection will stop changing.\n\t\t\tthis._fireSelectionChangeDoneDebounced(data);\n\t\t}\n\t}]);\n\n\treturn FakeSelectionObserver;\n}(_observer2.default);\n\n// Checks if one of the arrow keys is pressed.\n//\n// @private\n// @param {Number} keyCode\n// @returns {Boolean}\n\n\nexports.default = FakeSelectionObserver;\nfunction _isArrowKeyCode(keyCode) {\n\treturn keyCode == _keyboard.keyCodes.arrowright || keyCode == _keyboard.keyCodes.arrowleft || keyCode == _keyboard.keyCodes.arrowup || keyCode == _keyboard.keyCodes.arrowdown;\n}\n\n/***/ }),\n/* 323 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _domeventobserver = __webpack_require__(58);\n\nvar _domeventobserver2 = _interopRequireDefault(_domeventobserver);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module engine/view/observer/focusobserver\n */\n\n/**\n * {@link module:engine/view/document~Document#event:focus Focus}\n * and {@link module:engine/view/document~Document#event:blur blur} events observer.\n * Focus observer handle also {@link module:engine/view/rooteditableelement~RootEditableElement#isFocused isFocused} property of the\n * {@link module:engine/view/rooteditableelement~RootEditableElement root elements}.\n *\n * Note that this observer is attached by the {@link module:engine/view/document~Document} and is available by default.\n *\n * @extends module:engine/view/observer/domeventobserver~DomEventObserver\n */\nvar FocusObserver = function (_DomEventObserver) {\n  _inherits(FocusObserver, _DomEventObserver);\n\n  function FocusObserver(document) {\n    _classCallCheck(this, FocusObserver);\n\n    var _this = _possibleConstructorReturn(this, (FocusObserver.__proto__ || Object.getPrototypeOf(FocusObserver)).call(this, document));\n\n    _this.domEventType = ['focus', 'blur'];\n    _this.useCapture = true;\n\n    document.on('focus', function () {\n      document.isFocused = true;\n    });\n\n    document.on('blur', function (evt, data) {\n      var selectedEditable = document.selection.editableElement;\n\n      if (selectedEditable === null || selectedEditable === data.target) {\n        document.isFocused = false;\n\n        // Re-render the document to update view elements.\n        document.render();\n      }\n    });\n    return _this;\n  }\n\n  _createClass(FocusObserver, [{\n    key: 'onDomEvent',\n    value: function onDomEvent(domEvent) {\n      this.fire(domEvent.type, domEvent);\n    }\n  }]);\n\n  return FocusObserver;\n}(_domeventobserver2.default);\n\n/**\n * Fired when one of the editables gets focus.\n *\n * Introduced by {@link module:engine/view/observer/focusobserver~FocusObserver}.\n *\n * Note that because {@link module:engine/view/observer/focusobserver~FocusObserver} is attached by the\n * {@link module:engine/view/document~Document}\n * this event is available by default.\n *\n * @see module:engine/view/observer/focusobserver~FocusObserver\n * @event module:engine/view/document~Document#event:focus\n * @param {module:engine/view/observer/domeventdata~DomEventData} data Event data.\n */\n\n/**\n * Fired when one of the editables loses focus.\n *\n * Introduced by {@link module:engine/view/observer/focusobserver~FocusObserver}.\n *\n * Note that because {@link module:engine/view/observer/focusobserver~FocusObserver} is attached by the\n * {@link module:engine/view/document~Document}\n * this event is available by default.\n *\n * @see module:engine/view/observer/focusobserver~FocusObserver\n * @event module:engine/view/document~Document#event:blur\n * @param {module:engine/view/observer/domeventdata~DomEventData} data Event data.\n */\n\n\nexports.default = FocusObserver;\n\n/***/ }),\n/* 324 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _domeventobserver = __webpack_require__(58);\n\nvar _domeventobserver2 = _interopRequireDefault(_domeventobserver);\n\nvar _keyboard = __webpack_require__(21);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module engine/view/observer/keyobserver\n */\n\n/**\n * {@link module:engine/view/document~Document#event:keydown Key down} event observer.\n *\n * Note that this observer is attached by the {@link module:engine/view/document~Document} and is available by default.\n *\n * @extends module:engine/view/observer/domeventobserver~DomEventObserver\n */\nvar KeyObserver = function (_DomEventObserver) {\n  _inherits(KeyObserver, _DomEventObserver);\n\n  function KeyObserver(document) {\n    _classCallCheck(this, KeyObserver);\n\n    var _this = _possibleConstructorReturn(this, (KeyObserver.__proto__ || Object.getPrototypeOf(KeyObserver)).call(this, document));\n\n    _this.domEventType = 'keydown';\n    return _this;\n  }\n\n  _createClass(KeyObserver, [{\n    key: 'onDomEvent',\n    value: function onDomEvent(domEvt) {\n      this.fire('keydown', domEvt, {\n        keyCode: domEvt.keyCode,\n\n        altKey: domEvt.altKey,\n        ctrlKey: domEvt.ctrlKey || domEvt.metaKey,\n        shiftKey: domEvt.shiftKey,\n\n        get keystroke() {\n          return (0, _keyboard.getCode)(this);\n        }\n      });\n    }\n  }]);\n\n  return KeyObserver;\n}(_domeventobserver2.default);\n\n/**\n * Fired when a key has been pressed.\n *\n * Introduced by {@link module:engine/view/observer/keyobserver~KeyObserver}.\n *\n * Note that because {@link module:engine/view/observer/keyobserver~KeyObserver} is attached by the\n * {@link module:engine/view/document~Document}\n * this event is available by default.\n *\n * @see module:engine/view/observer/keyobserver~KeyObserver\n * @event module:engine/view/document~Document#event:keydown\n * @param {module:engine/view/observer/keyobserver~KeyEventData} keyEventData\n */\n\n/**\n * The value of the {@link module:engine/view/document~Document#event:keydown} event.\n *\n * @class module:engine/view/observer/keyobserver~KeyEventData\n * @extends module:engine/view/observer/domeventdata~DomEventData\n * @implements module:utils/keyboard~KeystrokeInfo\n */\n\n/**\n * Code of the whole keystroke. See {@link module:utils/keyboard~getCode}.\n *\n * @readonly\n * @member {Number} module:engine/view/observer/keyobserver~KeyEventData#keystroke\n */\n\n\nexports.default = KeyObserver;\n\n/***/ }),\n/* 325 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _domeventobserver = __webpack_require__(58);\n\nvar _domeventobserver2 = _interopRequireDefault(_domeventobserver);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module engine/view/observer/mouseobserver\n */\n\n/**\n * Mouse events observer.\n *\n * Note that this observer is not available by default. To make it available it needs to be added to\n * {@link module:engine/view/document~Document}\n * by {@link module:engine/view/document~Document#addObserver} method.\n *\n * @extends module:engine/view/observer/domeventobserver~DomEventObserver\n */\nvar MouseObserver = function (_DomEventObserver) {\n  _inherits(MouseObserver, _DomEventObserver);\n\n  function MouseObserver(document) {\n    _classCallCheck(this, MouseObserver);\n\n    var _this = _possibleConstructorReturn(this, (MouseObserver.__proto__ || Object.getPrototypeOf(MouseObserver)).call(this, document));\n\n    _this.domEventType = 'mousedown';\n    return _this;\n  }\n\n  _createClass(MouseObserver, [{\n    key: 'onDomEvent',\n    value: function onDomEvent(domEvent) {\n      this.fire(domEvent.type, domEvent);\n    }\n  }]);\n\n  return MouseObserver;\n}(_domeventobserver2.default);\n\n/**\n * Fired when mouse button is pressed down on one of the editables.\n *\n * Introduced by {@link module:engine/view/observer/mouseobserver~MouseObserver}.\n *\n * Note that this event is not available by default. To make it available {@link module:engine/view/observer/mouseobserver~MouseObserver}\n * needs to be added to {@link module:engine/view/document~Document} by a {@link module:engine/view/document~Document#addObserver} method.\n *\n * @see module:engine/view/observer/mouseobserver~MouseObserver\n * @event module:engine/view/document~Document#event:mousedown\n * @param {module:engine/view/observer/domeventdata~DomEventData} data Event data.\n */\n\n\nexports.default = MouseObserver;\n\n/***/ }),\n/* 326 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if (\"value\" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };\n\nvar _observer = __webpack_require__(47);\n\nvar _observer2 = _interopRequireDefault(_observer);\n\nvar _mutationobserver = __webpack_require__(169);\n\nvar _mutationobserver2 = _interopRequireDefault(_mutationobserver);\n\nvar _log = __webpack_require__(54);\n\nvar _log2 = _interopRequireDefault(_log);\n\nvar _debounce = __webpack_require__(143);\n\nvar _debounce2 = _interopRequireDefault(_debounce);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module engine/view/observer/selectionobserver\n */\n\n/* global setInterval, clearInterval */\n\n/**\n * Selection observer class observes selection changes in the document. If selection changes on the document this\n * observer checks if there are any mutations and if DOM selection is different than the\n * {@link module:engine/view/document~Document#selection view selection}. Selection observer fires\n * {@link module:engine/view/document~Document#event:selectionChange} event only if selection change was the only change in the document\n * and DOM selection is different then the view selection.\n *\n * Note that this observer is attached by the {@link module:engine/view/document~Document} and is available by default.\n *\n * @see module:engine/view/observer/mutationobserver~MutationObserver\n * @extends module:engine/view/observer/observer~Observer\n */\nvar SelectionObserver = function (_Observer) {\n\t_inherits(SelectionObserver, _Observer);\n\n\tfunction SelectionObserver(document) {\n\t\t_classCallCheck(this, SelectionObserver);\n\n\t\t/**\n   * Instance of the mutation observer. Selection observer calls\n   * {@link module:engine/view/observer/mutationobserver~MutationObserver#flush} to ensure that the mutations will be handled before the\n   * {@link module:engine/view/document~Document#event:selectionChange} event is fired.\n   *\n   * @readonly\n   * @member {module:engine/view/observer/mutationobserver~MutationObserver}\n   * module:engine/view/observer/selectionobserver~SelectionObserver#mutationObserver\n   */\n\t\tvar _this = _possibleConstructorReturn(this, (SelectionObserver.__proto__ || Object.getPrototypeOf(SelectionObserver)).call(this, document));\n\n\t\t_this.mutationObserver = document.getObserver(_mutationobserver2.default);\n\n\t\t/**\n   * Reference to the {@link module:engine/view/document~Document} object.\n   *\n   * @readonly\n   * @member {module:engine/view/document~Document} module:engine/view/observer/selectionobserver~SelectionObserver#document\n   */\n\t\t_this.document = document;\n\n\t\t/**\n   * Reference to the view {@link module:engine/view/selection~Selection} object used to compare new selection with it.\n   *\n   * @readonly\n   * @member {module:engine/view/selection~Selection} module:engine/view/observer/selectionobserver~SelectionObserver#selection\n   */\n\t\t_this.selection = document.selection;\n\n\t\t/**\n   * Reference to the {@link module:engine/view/document~Document#domConverter}.\n   *\n   * @readonly\n   * @member {module:engine/view/domconverter~DomConverter} module:engine/view/observer/selectionobserver~SelectionObserver#domConverter\n   */\n\t\t_this.domConverter = document.domConverter;\n\n\t\t/**\n   * Set of documents which have added \"selectionchange\" listener to avoid adding listener twice to the same\n   * document.\n   *\n   * @private\n   * @member {WeakSet.<Document>} module:engine/view/observer/selectionobserver~SelectionObserver#_documents\n   */\n\t\t_this._documents = new WeakSet();\n\n\t\t/**\n   * Fires debounced event `selectionChangeDone`. It uses `lodash#debounce` method to delay function call.\n   *\n   * @private\n   * @param {Object} data Selection change data.\n   * @method #_fireSelectionChangeDoneDebounced\n   */\n\t\t_this._fireSelectionChangeDoneDebounced = (0, _debounce2.default)(function (data) {\n\t\t\treturn _this.document.fire('selectionChangeDone', data);\n\t\t}, 200);\n\n\t\t_this._clearInfiniteLoopInterval = setInterval(function () {\n\t\t\treturn _this._clearInfiniteLoop();\n\t\t}, 2000);\n\n\t\t/**\n   * Private property to store the last selection, to check if the code does not enter infinite loop.\n   *\n   * @private\n   * @member {module:engine/view/selection~Selection} module:engine/view/observer/selectionobserver~SelectionObserver#_lastSelection\n   */\n\n\t\t/**\n   * Private property to store the last but one selection, to check if the code does not enter infinite loop.\n   *\n   * @private\n   * @member {module:engine/view/selection~Selection} module:engine/view/observer/selectionobserver~SelectionObserver#_lastButOneSelection\n   */\n\n\t\t/**\n   * Private property to check if the code does not enter infinite loop.\n   *\n   * @private\n   * @member {Number} module:engine/view/observer/selectionobserver~SelectionObserver#_loopbackCounter\n   */\n\t\treturn _this;\n\t}\n\n\t/**\n  * @inheritDoc\n  */\n\n\n\t_createClass(SelectionObserver, [{\n\t\tkey: 'observe',\n\t\tvalue: function observe(domElement) {\n\t\t\tvar _this2 = this;\n\n\t\t\tvar domDocument = domElement.ownerDocument;\n\n\t\t\t// Add listener once per each document.\n\t\t\tif (this._documents.has(domDocument)) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tthis.listenTo(domDocument, 'selectionchange', function () {\n\t\t\t\t_this2._handleSelectionChange(domDocument);\n\t\t\t});\n\n\t\t\tthis._documents.add(domDocument);\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: 'destroy',\n\t\tvalue: function destroy() {\n\t\t\t_get(SelectionObserver.prototype.__proto__ || Object.getPrototypeOf(SelectionObserver.prototype), 'destroy', this).call(this);\n\n\t\t\tclearInterval(this._clearInfiniteLoopInterval);\n\t\t\tthis._fireSelectionChangeDoneDebounced.cancel();\n\t\t}\n\n\t\t/**\n   * Selection change listener. {@link module:engine/view/observer/mutationobserver~MutationObserver#flush Flush} mutations, check if\n   * selection changes and fires {@link module:engine/view/document~Document#event:selectionChange} event on every change\n   * and {@link module:engine/view/document~Document#event:selectionChangeDone} when selection stop changing.\n   *\n   * @private\n   * @param {Document} domDocument DOM document.\n   */\n\n\t}, {\n\t\tkey: '_handleSelectionChange',\n\t\tvalue: function _handleSelectionChange(domDocument) {\n\t\t\tif (!this.isEnabled || !this.document.isFocused) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// Ensure the mutation event will be before selection event on all browsers.\n\t\t\tthis.mutationObserver.flush();\n\n\t\t\t// If there were mutations then the view will be re-rendered by the mutation observer and selection\n\t\t\t// will be updated, so selections will equal and event will not be fired, as expected.\n\t\t\tvar domSelection = domDocument.defaultView.getSelection();\n\t\t\tvar newViewSelection = this.domConverter.domSelectionToView(domSelection);\n\n\t\t\tif (this.selection.isEqual(newViewSelection)) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// Ensure we are not in the infinite loop (#400).\n\t\t\tif (this._isInfiniteLoop(newViewSelection)) {\n\t\t\t\t/**\n     * Selection change observer detected an infinite rendering loop.\n     * Most probably you try to put the selection in the position which is not allowed\n     * by the browser and browser fixes it automatically what causes `selectionchange` event on\n     * which a loopback through a model tries to re-render the wrong selection and again.\n     *\n     * @error selectionchange-infinite-loop\n     */\n\t\t\t\t_log2.default.warn('selectionchange-infinite-loop: Selection change observer detected an infinite rendering loop.');\n\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tvar data = {\n\t\t\t\toldSelection: this.selection,\n\t\t\t\tnewSelection: newViewSelection,\n\t\t\t\tdomSelection: domSelection\n\t\t\t};\n\n\t\t\t// Should be fired only when selection change was the only document change.\n\t\t\tthis.document.fire('selectionChange', data);\n\n\t\t\t// Call` #_fireSelectionChangeDoneDebounced` every time when `selectionChange` event is fired.\n\t\t\t// This function is debounced what means that `selectionChangeDone` event will be fired only when\n\t\t\t// defined int the function time will elapse since the last time the function was called.\n\t\t\t// So `selectionChangeDone` will be fired when selection will stop changing.\n\t\t\tthis._fireSelectionChangeDoneDebounced(data);\n\t\t}\n\n\t\t/**\n   * Checks if selection rendering entered an infinite loop.\n   *\n   * See https://github.com/ckeditor/ckeditor5-engine/issues/400.\n   *\n   * @private\n   * @param {module:engine/view/selection~Selection} newSelection DOM selection converted to view.\n   * @returns {Boolean} True is the same selection repeat more then 10 times.\n   */\n\n\t}, {\n\t\tkey: '_isInfiniteLoop',\n\t\tvalue: function _isInfiniteLoop(newSelection) {\n\t\t\t// If the position is the same a the last one or the last but one we increment the counter.\n\t\t\t// We need to check last two selections because the browser will first fire a selectionchange event\n\t\t\t// for an incorrect selection and then for a corrected one.\n\t\t\tif (this._lastSelection && this._lastButOneSelection && (newSelection.isEqual(this._lastSelection) || newSelection.isEqual(this._lastButOneSelection))) {\n\t\t\t\tthis._loopbackCounter++;\n\t\t\t} else {\n\t\t\t\tthis._lastButOneSelection = this._lastSelection;\n\t\t\t\tthis._lastSelection = newSelection;\n\t\t\t\tthis._loopbackCounter = 0;\n\t\t\t}\n\n\t\t\t// This counter is reset every 2 seconds. 50 selection changes in 2 seconds is enough high number\n\t\t\t// to be very difficult (impossible) to achieve using just keyboard keys (during normal editor use).\n\t\t\tif (this._loopbackCounter > 50) {\n\t\t\t\treturn true;\n\t\t\t}\n\n\t\t\treturn false;\n\t\t}\n\n\t\t/**\n   * Clears `SelectionObserver` internal properties connected with preventing infinite loop.\n   *\n   * @protected\n   */\n\n\t}, {\n\t\tkey: '_clearInfiniteLoop',\n\t\tvalue: function _clearInfiniteLoop() {\n\t\t\tthis._lastSelection = null;\n\t\t\tthis._lastButOneSelection = null;\n\t\t\tthis._loopbackCounter = 0;\n\t\t}\n\t}]);\n\n\treturn SelectionObserver;\n}(_observer2.default);\n\n/**\n * Fired when selection has changed. This event is fired only when the selection change was the only change that happened\n * in the document, and old selection is different then the new selection.\n *\n * Introduced by {@link module:engine/view/observer/selectionobserver~SelectionObserver}.\n *\n * Note that because {@link module:engine/view/observer/selectionobserver~SelectionObserver} is attached by the\n * {@link module:engine/view/document~Document}\n * this event is available by default.\n *\n * @see module:engine/view/observer/selectionobserver~SelectionObserver\n * @event module:engine/view/document~Document#event:selectionChange\n * @param {Object} data\n * @param {module:engine/view/selection~Selection} data.oldSelection Old View selection which is\n * {@link module:engine/view/document~Document#selection}.\n * @param {module:engine/view/selection~Selection} data.newSelection New View selection which is converted DOM selection.\n * @param {Selection} data.domSelection Native DOM selection.\n */\n\n/**\n * Fired when selection stops changing.\n *\n * Introduced by {@link module:engine/view/observer/selectionobserver~SelectionObserver}.\n *\n * Note that because {@link module:engine/view/observer/selectionobserver~SelectionObserver} is attached by the\n * {@link module:engine/view/document~Document}\n * this event is available by default.\n *\n * @see module:engine/view/observer/selectionobserver~SelectionObserver\n * @event module:engine/view/document~Document#event:selectionChangeDone\n * @param {Object} data\n * @param {module:engine/view/selection~Selection} data.oldSelection Old View selection which is\n * {@link module:engine/view/document~Document#selection}.\n * @param {module:engine/view/selection~Selection} data.newSelection New View selection which is converted DOM selection.\n * @param {Selection} data.domSelection Native DOM selection.\n */\n\n\nexports.default = SelectionObserver;\n\n/***/ }),\n/* 327 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module engine/view/renderer\n */\n\nvar _text = __webpack_require__(29);\n\nvar _text2 = _interopRequireDefault(_text);\n\nvar _position = __webpack_require__(24);\n\nvar _position2 = _interopRequireDefault(_position);\n\nvar _filler = __webpack_require__(57);\n\nvar _mix = __webpack_require__(4);\n\nvar _mix2 = _interopRequireDefault(_mix);\n\nvar _diff = __webpack_require__(191);\n\nvar _diff2 = _interopRequireDefault(_diff);\n\nvar _insertat = __webpack_require__(393);\n\nvar _insertat2 = _interopRequireDefault(_insertat);\n\nvar _remove = __webpack_require__(397);\n\nvar _remove2 = _interopRequireDefault(_remove);\n\nvar _observablemixin = __webpack_require__(31);\n\nvar _observablemixin2 = _interopRequireDefault(_observablemixin);\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/* global Range */\n\n/**\n * Renderer updates DOM structure and selection, to make them a reflection of the view structure and selection.\n *\n * View nodes which may need to be rendered needs to be {@link module:engine/view/renderer~Renderer#markToSync marked}.\n * Then, on {@link module:engine/view/renderer~Renderer#render render}, renderer compares the view nodes with the DOM nodes\n * in order to check which ones really need to be refreshed. Finally, it creates DOM nodes from these view nodes,\n * {@link module:engine/view/domconverter~DomConverter#bindElements binds} them and inserts into the DOM tree.\n *\n * Every time {@link module:engine/view/renderer~Renderer#render render} is called, renderer additionally checks if\n * {@link module:engine/view/renderer~Renderer#selection selection} needs update and updates it if so.\n *\n * Renderer uses {@link module:engine/view/domconverter~DomConverter} to transform and bind nodes.\n */\nvar Renderer = function () {\n\t/**\n  * Creates a renderer instance.\n  *\n  * @param {module:engine/view/domconverter~DomConverter} domConverter Converter instance.\n  * @param {module:engine/view/selection~Selection} selection View selection.\n  */\n\tfunction Renderer(domConverter, selection) {\n\t\t_classCallCheck(this, Renderer);\n\n\t\t/**\n   * Set of DOM Documents instances.\n   *\n   * @member {Set.<Document>}\n   */\n\t\tthis.domDocuments = new Set();\n\n\t\t/**\n   * Converter instance.\n   *\n   * @readonly\n   * @member {module:engine/view/domconverter~DomConverter}\n   */\n\t\tthis.domConverter = domConverter;\n\n\t\t/**\n   * Set of nodes which attributes changed and may need to be rendered.\n   *\n   * @readonly\n   * @member {Set.<module:engine/view/node~Node>}\n   */\n\t\tthis.markedAttributes = new Set();\n\n\t\t/**\n   * Set of elements which child lists changed and may need to be rendered.\n   *\n   * @readonly\n   * @member {Set.<module:engine/view/node~Node>}\n   */\n\t\tthis.markedChildren = new Set();\n\n\t\t/**\n   * Set of text nodes which text data changed and may need to be rendered.\n   *\n   * @readonly\n   * @member {Set.<module:engine/view/node~Node>}\n   */\n\t\tthis.markedTexts = new Set();\n\n\t\t/**\n   * View selection. Renderer updates DOM Selection to make it match this one.\n   *\n   * @readonly\n   * @member {module:engine/view/selection~Selection}\n   */\n\t\tthis.selection = selection;\n\n\t\t/**\n   * The text node in which the inline filler was rendered.\n   *\n   * @private\n   * @member {Text}\n   */\n\t\tthis._inlineFiller = null;\n\n\t\t/**\n   * Indicates if view document is focused and selection can be rendered. Selection will not be rendered if\n   * this is set to `false`.\n   *\n   * @member {Boolean}\n   */\n\t\tthis.isFocused = false;\n\n\t\t/**\n   * DOM element containing fake selection.\n   *\n   * @private\n   * @type {null|HTMLElement}\n   */\n\t\tthis._fakeSelectionContainer = null;\n\t}\n\n\t/**\n  * Mark node to be synchronized.\n  *\n  * Note that only view nodes which parents have corresponding DOM elements need to be marked to be synchronized.\n  *\n  * @see #markedAttributes\n  * @see #markedChildren\n  * @see #markedTexts\n  *\n  * @param {module:engine/view/document~ChangeType} type Type of the change.\n  * @param {module:engine/view/node~Node} node Node to be marked.\n  */\n\n\n\t_createClass(Renderer, [{\n\t\tkey: 'markToSync',\n\t\tvalue: function markToSync(type, node) {\n\t\t\tif (type === 'text') {\n\t\t\t\tif (this.domConverter.getCorrespondingDom(node.parent)) {\n\t\t\t\t\tthis.markedTexts.add(node);\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\t// If the node has no DOM element it is not rendered yet,\n\t\t\t\t// its children/attributes do not need to be marked to be sync.\n\t\t\t\tif (!this.domConverter.getCorrespondingDom(node)) {\n\t\t\t\t\treturn;\n\t\t\t\t}\n\n\t\t\t\tif (type === 'attributes') {\n\t\t\t\t\tthis.markedAttributes.add(node);\n\t\t\t\t} else if (type === 'children') {\n\t\t\t\t\tthis.markedChildren.add(node);\n\t\t\t\t} else {\n\t\t\t\t\t/**\n      * Unknown type passed to Renderer.markToSync.\n      *\n      * @error renderer-unknown-type\n      */\n\t\t\t\t\tthrow new _ckeditorerror2.default('view-renderer-unknown-type: Unknown type passed to Renderer.markToSync.');\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Render method checks {@link #markedAttributes},\n   * {@link #markedChildren} and {@link #markedTexts} and updates all\n   * nodes which need to be updated. Then it clears all three sets. Also, every time render is called it compares and\n   * if needed updates the selection.\n   *\n   * Renderer tries not to break text composition (e.g. IME) and x-index of the selection,\n   * so it does as little as it is needed to update the DOM.\n   *\n   * For attributes it adds new attributes to DOM elements, updates values and removes\n   * attributes which do not exist in the view element.\n   *\n   * For text nodes it updates the text string if it is different. Note that if parent element is marked as an element\n   * which changed child list, text node update will not be done, because it may not be possible do find a\n   * {@link module:engine/view/domconverter~DomConverter#getCorrespondingDomText corresponding DOM text}. The change will be handled\n   * in the parent element.\n   *\n   * For elements, which child lists have changed, it calculates a {@link module:utils/diff~diff} and adds or removes children which have\n   * changed.\n   *\n   * Rendering also handles {@link module:engine/view/filler fillers}. Especially, it checks if the inline filler is needed\n   * at selection position and adds or removes it. To prevent breaking text composition inline filler will not be\n   * removed as long selection is in the text node which needed it at first.\n   */\n\n\t}, {\n\t\tkey: 'render',\n\t\tvalue: function render() {\n\t\t\tvar inlineFillerPosition = void 0;\n\n\t\t\t// There was inline filler rendered in the DOM but it's not\n\t\t\t// at the selection position any more, so we can remove it\n\t\t\t// (cause even if it's needed, it must be placed in another location).\n\t\t\tif (this._inlineFiller && !this._isSelectionInInlineFiller()) {\n\t\t\t\tthis._removeInlineFiller();\n\t\t\t}\n\n\t\t\t// If we've got the filler, let's try to guess its position in the view.\n\t\t\tif (this._inlineFiller) {\n\t\t\t\tinlineFillerPosition = this._getInlineFillerPosition();\n\t\t\t}\n\t\t\t// Othewise, if it's needed, create it at the selection position.\n\t\t\telse if (this._needsInlineFillerAtSelection()) {\n\t\t\t\t\tinlineFillerPosition = this.selection.getFirstPosition();\n\n\t\t\t\t\t// Do not use `markToSync` so it will be added even if the parent is already added.\n\t\t\t\t\tthis.markedChildren.add(inlineFillerPosition.parent);\n\t\t\t\t}\n\n\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\tvar _didIteratorError = false;\n\t\t\tvar _iteratorError = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator = this.markedTexts[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\tvar node = _step.value;\n\n\t\t\t\t\tif (!this.markedChildren.has(node.parent) && this.domConverter.getCorrespondingDom(node.parent)) {\n\t\t\t\t\t\tthis._updateText(node, { inlineFillerPosition: inlineFillerPosition });\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError = true;\n\t\t\t\t_iteratorError = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tvar _iteratorNormalCompletion2 = true;\n\t\t\tvar _didIteratorError2 = false;\n\t\t\tvar _iteratorError2 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator2 = this.markedAttributes[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {\n\t\t\t\t\tvar element = _step2.value;\n\n\t\t\t\t\tthis._updateAttrs(element);\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError2 = true;\n\t\t\t\t_iteratorError2 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion2 && _iterator2.return) {\n\t\t\t\t\t\t_iterator2.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError2) {\n\t\t\t\t\t\tthrow _iteratorError2;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tvar _iteratorNormalCompletion3 = true;\n\t\t\tvar _didIteratorError3 = false;\n\t\t\tvar _iteratorError3 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator3 = this.markedChildren[Symbol.iterator](), _step3; !(_iteratorNormalCompletion3 = (_step3 = _iterator3.next()).done); _iteratorNormalCompletion3 = true) {\n\t\t\t\t\tvar _element = _step3.value;\n\n\t\t\t\t\tthis._updateChildren(_element, { inlineFillerPosition: inlineFillerPosition });\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError3 = true;\n\t\t\t\t_iteratorError3 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion3 && _iterator3.return) {\n\t\t\t\t\t\t_iterator3.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError3) {\n\t\t\t\t\t\tthrow _iteratorError3;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tthis._updateSelection();\n\t\t\tthis._updateFocus();\n\n\t\t\tthis.markedTexts.clear();\n\t\t\tthis.markedAttributes.clear();\n\t\t\tthis.markedChildren.clear();\n\n\t\t\t// Remember the filler by its node.\n\t\t\tthis._inlineFiller = this._getInlineFillerNode(inlineFillerPosition);\n\t\t}\n\n\t\t/**\n   * Gets the text node in which the inline filler is kept.\n   *\n   * @private\n   * @param {module:engine/view/position~Position} fillerPosition The position on which the filler is needed in the view.\n   * @returns {Text} The text node with the filler.\n   */\n\n\t}, {\n\t\tkey: '_getInlineFillerNode',\n\t\tvalue: function _getInlineFillerNode(fillerPosition) {\n\t\t\tif (!fillerPosition) {\n\t\t\t\tthis._inlineFiller = null;\n\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tvar domPosition = this.domConverter.viewPositionToDom(fillerPosition);\n\n\t\t\t/* istanbul ignore if */\n\t\t\tif (!domPosition || !(0, _filler.startsWithFiller)(domPosition.parent)) {\n\t\t\t\t/**\n     * Cannot find filler node by its position.\n     *\n     * @error view-renderer-cannot-find-filler\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('view-renderer-cannot-find-filler: Cannot find filler node by its position.');\n\t\t\t}\n\n\t\t\treturn domPosition.parent;\n\t\t}\n\n\t\t/**\n   * Gets the position of the inline filler based on the current selection.\n   * Here, we assume that we know that the filler is needed and\n   * {@link #_isSelectionInInlineFiller is at the selection position}, and, since it's needed,\n   * it's somewhere at the selection postion.\n   *\n   * Note: we cannot restore the filler position based on the filler's DOM text node, because\n   * when this method is called (before rendering) the bindings will often be broken. View to DOM\n   * bindings are only dependable after rendering.\n   *\n   * @private\n   * @returns {module:engine/view/position~Position}\n   */\n\n\t}, {\n\t\tkey: '_getInlineFillerPosition',\n\t\tvalue: function _getInlineFillerPosition() {\n\t\t\tvar firstPos = this.selection.getFirstPosition();\n\n\t\t\tif (firstPos.parent.is('text')) {\n\t\t\t\treturn _position2.default.createBefore(this.selection.getFirstPosition().parent);\n\t\t\t} else {\n\t\t\t\treturn firstPos;\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Returns `true` if the selection hasn't left the inline filler's text node.\n   * If it is `true` it means that the filler had been added for a reason and the selection does not\n   * left the filler's text node. E.g. the user can be in the middle of a composition so it should not be touched.\n   *\n   * @private\n   * @returns {Boolean} True if the inline filler and selection are in the same place.\n   */\n\n\t}, {\n\t\tkey: '_isSelectionInInlineFiller',\n\t\tvalue: function _isSelectionInInlineFiller() {\n\t\t\tif (this.selection.rangeCount != 1 || !this.selection.isCollapsed) {\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\t// Note, we can't check if selection's position equals position of the\n\t\t\t// this._inlineFiller node, because of #663. We may not be able to calculate\n\t\t\t// the filler's position in the view at this stage.\n\t\t\t// Instead, we check it the other way – whether selection is anchored in\n\t\t\t// that text node or next to it.\n\n\t\t\t// Possible options are:\n\t\t\t// \"FILLER{}\"\n\t\t\t// \"FILLERadded-text{}\"\n\t\t\tvar selectionPosition = this.selection.getFirstPosition();\n\t\t\tvar position = this.domConverter.viewPositionToDom(selectionPosition);\n\n\t\t\tif (position && this.domConverter.isText(position.parent) && (0, _filler.startsWithFiller)(position.parent)) {\n\t\t\t\treturn true;\n\t\t\t}\n\n\t\t\treturn false;\n\t\t}\n\n\t\t/**\n   * Removes the inline filler.\n   *\n   * @private\n   */\n\n\t}, {\n\t\tkey: '_removeInlineFiller',\n\t\tvalue: function _removeInlineFiller() {\n\t\t\tvar domFillerNode = this._inlineFiller;\n\n\t\t\t// Something weird happened and the stored node doesn't contain the filler's text.\n\t\t\tif (!(0, _filler.startsWithFiller)(domFillerNode)) {\n\t\t\t\t/**\n     * The inline filler node was lost. Most likely, something overwrote the filler text node\n     * in the DOM.\n     *\n     * @error view-renderer-filler-was-lost\n     */\n\t\t\t\tthrow new _ckeditorerror2.default('view-renderer-filler-was-lost: The inline filler node was lost.');\n\t\t\t}\n\n\t\t\tif ((0, _filler.isInlineFiller)(domFillerNode)) {\n\t\t\t\tdomFillerNode.parentNode.removeChild(domFillerNode);\n\t\t\t} else {\n\t\t\t\tdomFillerNode.data = domFillerNode.data.substr(_filler.INLINE_FILLER_LENGTH);\n\t\t\t}\n\n\t\t\tthis._inlineFiller = null;\n\t\t}\n\n\t\t/**\n   * Checks if the inline {@link module:engine/view/filler filler} should be added.\n   *\n   * @private\n   * @returns {Boolean} True if the inline fillers should be added.\n   */\n\n\t}, {\n\t\tkey: '_needsInlineFillerAtSelection',\n\t\tvalue: function _needsInlineFillerAtSelection() {\n\t\t\tif (this.selection.rangeCount != 1 || !this.selection.isCollapsed) {\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\tvar selectionPosition = this.selection.getFirstPosition();\n\t\t\tvar selectionParent = selectionPosition.parent;\n\t\t\tvar selectionOffset = selectionPosition.offset;\n\n\t\t\t// If there is no DOM root we do not care about fillers.\n\t\t\tif (!this.domConverter.getCorrespondingDomElement(selectionParent.root)) {\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\tif (!selectionParent.is('element')) {\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\t// We have block filler, we do not need inline one.\n\t\t\tif (selectionOffset === selectionParent.getFillerOffset()) {\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\tvar nodeBefore = selectionPosition.nodeBefore;\n\t\t\tvar nodeAfter = selectionPosition.nodeAfter;\n\n\t\t\tif (nodeBefore instanceof _text2.default || nodeAfter instanceof _text2.default) {\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\treturn true;\n\t\t}\n\n\t\t/**\n   * Checks if text needs to be updated and possibly updates it.\n   *\n   * @private\n   * @param {module:engine/view/text~Text} viewText View text to update.\n   * @param {Object} options\n   * @param {module:engine/view/position~Position} options.inlineFillerPosition The position on which the inline\n   * filler should be rendered.\n   */\n\n\t}, {\n\t\tkey: '_updateText',\n\t\tvalue: function _updateText(viewText, options) {\n\t\t\tvar domText = this.domConverter.getCorrespondingDom(viewText);\n\t\t\tvar newDomText = this.domConverter.viewToDom(viewText, domText.ownerDocument);\n\n\t\t\tvar actualText = domText.data;\n\t\t\tvar expectedText = newDomText.data;\n\n\t\t\tvar filler = options.inlineFillerPosition;\n\n\t\t\tif (filler && filler.parent == viewText.parent && filler.offset == viewText.index) {\n\t\t\t\texpectedText = _filler.INLINE_FILLER + expectedText;\n\t\t\t}\n\n\t\t\tif (actualText != expectedText) {\n\t\t\t\tdomText.data = expectedText;\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Checks if attributes list needs to be updated and possibly updates it.\n   *\n   * @private\n   * @param {module:engine/view/element~Element} viewElement View element to update.\n   */\n\n\t}, {\n\t\tkey: '_updateAttrs',\n\t\tvalue: function _updateAttrs(viewElement) {\n\t\t\tvar domElement = this.domConverter.getCorrespondingDom(viewElement);\n\t\t\tvar domAttrKeys = Array.from(domElement.attributes).map(function (attr) {\n\t\t\t\treturn attr.name;\n\t\t\t});\n\t\t\tvar viewAttrKeys = viewElement.getAttributeKeys();\n\n\t\t\t// Add or overwrite attributes.\n\t\t\tvar _iteratorNormalCompletion4 = true;\n\t\t\tvar _didIteratorError4 = false;\n\t\t\tvar _iteratorError4 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator4 = viewAttrKeys[Symbol.iterator](), _step4; !(_iteratorNormalCompletion4 = (_step4 = _iterator4.next()).done); _iteratorNormalCompletion4 = true) {\n\t\t\t\t\tvar key = _step4.value;\n\n\t\t\t\t\tdomElement.setAttribute(key, viewElement.getAttribute(key));\n\t\t\t\t}\n\n\t\t\t\t// Remove from DOM attributes which do not exists in the view.\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError4 = true;\n\t\t\t\t_iteratorError4 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion4 && _iterator4.return) {\n\t\t\t\t\t\t_iterator4.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError4) {\n\t\t\t\t\t\tthrow _iteratorError4;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tvar _iteratorNormalCompletion5 = true;\n\t\t\tvar _didIteratorError5 = false;\n\t\t\tvar _iteratorError5 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator5 = domAttrKeys[Symbol.iterator](), _step5; !(_iteratorNormalCompletion5 = (_step5 = _iterator5.next()).done); _iteratorNormalCompletion5 = true) {\n\t\t\t\t\tvar _key = _step5.value;\n\n\t\t\t\t\tif (!viewElement.hasAttribute(_key)) {\n\t\t\t\t\t\tdomElement.removeAttribute(_key);\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError5 = true;\n\t\t\t\t_iteratorError5 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion5 && _iterator5.return) {\n\t\t\t\t\t\t_iterator5.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError5) {\n\t\t\t\t\t\tthrow _iteratorError5;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Checks if elements child list needs to be updated and possibly updates it.\n   *\n   * @private\n   * @param {module:engine/view/element~Element} viewElement View element to update.\n   * @param {Object} options\n   * @param {module:engine/view/position~Position} options.inlineFillerPosition The position on which the inline\n   * filler should be rendered.\n   */\n\n\t}, {\n\t\tkey: '_updateChildren',\n\t\tvalue: function _updateChildren(viewElement, options) {\n\t\t\tvar domConverter = this.domConverter;\n\t\t\tvar domElement = domConverter.getCorrespondingDom(viewElement);\n\t\t\tvar domDocument = domElement.ownerDocument;\n\n\t\t\tvar filler = options.inlineFillerPosition;\n\n\t\t\tvar actualDomChildren = domElement.childNodes;\n\t\t\tvar expectedDomChildren = Array.from(domConverter.viewChildrenToDom(viewElement, domDocument, { bind: true }));\n\n\t\t\tif (filler && filler.parent == viewElement) {\n\t\t\t\tvar expectedNodeAfterFiller = expectedDomChildren[filler.offset];\n\n\t\t\t\tif (this.domConverter.isText(expectedNodeAfterFiller)) {\n\t\t\t\t\texpectedNodeAfterFiller.data = _filler.INLINE_FILLER + expectedNodeAfterFiller.data;\n\t\t\t\t} else {\n\t\t\t\t\texpectedDomChildren.splice(filler.offset, 0, domDocument.createTextNode(_filler.INLINE_FILLER));\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tvar actions = (0, _diff2.default)(actualDomChildren, expectedDomChildren, sameNodes);\n\n\t\t\tvar i = 0;\n\n\t\t\tvar _iteratorNormalCompletion6 = true;\n\t\t\tvar _didIteratorError6 = false;\n\t\t\tvar _iteratorError6 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator6 = actions[Symbol.iterator](), _step6; !(_iteratorNormalCompletion6 = (_step6 = _iterator6.next()).done); _iteratorNormalCompletion6 = true) {\n\t\t\t\t\tvar action = _step6.value;\n\n\t\t\t\t\tif (action === 'insert') {\n\t\t\t\t\t\t(0, _insertat2.default)(domElement, i, expectedDomChildren[i]);\n\t\t\t\t\t\ti++;\n\t\t\t\t\t} else if (action === 'delete') {\n\t\t\t\t\t\t(0, _remove2.default)(actualDomChildren[i]);\n\t\t\t\t\t} else {\n\t\t\t\t\t\t// 'equal'\n\t\t\t\t\t\ti++;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError6 = true;\n\t\t\t\t_iteratorError6 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion6 && _iterator6.return) {\n\t\t\t\t\t\t_iterator6.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError6) {\n\t\t\t\t\t\tthrow _iteratorError6;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tfunction sameNodes(actualDomChild, expectedDomChild) {\n\t\t\t\t// Elements.\n\t\t\t\tif (actualDomChild === expectedDomChild) {\n\t\t\t\t\treturn true;\n\t\t\t\t}\n\t\t\t\t// Texts.\n\t\t\t\telse if (domConverter.isText(actualDomChild) && domConverter.isText(expectedDomChild)) {\n\t\t\t\t\t\treturn actualDomChild.data === expectedDomChild.data;\n\t\t\t\t\t}\n\t\t\t\t\t// Block fillers.\n\t\t\t\t\telse if ((0, _filler.isBlockFiller)(actualDomChild, domConverter.blockFiller) && (0, _filler.isBlockFiller)(expectedDomChild, domConverter.blockFiller)) {\n\t\t\t\t\t\t\treturn true;\n\t\t\t\t\t\t}\n\n\t\t\t\t// Not matching types.\n\t\t\t\treturn false;\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Checks if selection needs to be updated and possibly updates it.\n   *\n   * @private\n   */\n\n\t}, {\n\t\tkey: '_updateSelection',\n\t\tvalue: function _updateSelection() {\n\t\t\t// If there is no selection - remove DOM and fake selections.\n\t\t\tif (this.selection.rangeCount === 0) {\n\t\t\t\tthis._removeDomSelection();\n\t\t\t\tthis._removeFakeSelection();\n\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tvar domRoot = this.domConverter.getCorrespondingDomElement(this.selection.editableElement);\n\n\t\t\t// Do nothing if there is no focus, or there is no DOM element corresponding to selection's editable element.\n\t\t\tif (!this.isFocused || !domRoot) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// Render selection.\n\t\t\tif (this.selection.isFake) {\n\t\t\t\tthis._updateFakeSelection(domRoot);\n\t\t\t} else {\n\t\t\t\tthis._removeFakeSelection();\n\t\t\t\tthis._updateDomSelection(domRoot);\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Updates fake selection.\n   *\n   * @private\n   * @param {HTMLElement} domRoot Valid DOM root where fake selection container should be added.\n   */\n\n\t}, {\n\t\tkey: '_updateFakeSelection',\n\t\tvalue: function _updateFakeSelection(domRoot) {\n\t\t\tvar domDocument = domRoot.ownerDocument;\n\n\t\t\t// Create fake selection container if one does not exist.\n\t\t\tif (!this._fakeSelectionContainer) {\n\t\t\t\tthis._fakeSelectionContainer = domDocument.createElement('div');\n\t\t\t\tthis._fakeSelectionContainer.style.position = 'fixed';\n\t\t\t\tthis._fakeSelectionContainer.style.top = 0;\n\t\t\t\tthis._fakeSelectionContainer.style.left = '-9999px';\n\t\t\t\tthis._fakeSelectionContainer.appendChild(domDocument.createTextNode('\\xA0'));\n\t\t\t}\n\n\t\t\t// Add fake container if not already added.\n\t\t\tif (!this._fakeSelectionContainer.parentElement) {\n\t\t\t\tdomRoot.appendChild(this._fakeSelectionContainer);\n\t\t\t}\n\n\t\t\t// Update contents.\n\t\t\tvar content = this.selection.fakeSelectionLabel || '\\xA0';\n\t\t\tthis._fakeSelectionContainer.firstChild.data = content;\n\n\t\t\t// Update selection.\n\t\t\tvar domSelection = domDocument.getSelection();\n\t\t\tdomSelection.removeAllRanges();\n\t\t\tvar domRange = new Range();\n\t\t\tdomRange.selectNodeContents(this._fakeSelectionContainer);\n\t\t\tdomSelection.addRange(domRange);\n\n\t\t\t// Bind fake selection container with current selection.\n\t\t\tthis.domConverter.bindFakeSelection(this._fakeSelectionContainer, this.selection);\n\t\t}\n\n\t\t/**\n   * Updates DOM selection.\n   *\n   * @private\n   * @param {HTMLElement} domRoot Valid DOM root where DOM selection should be rendered.\n   */\n\n\t}, {\n\t\tkey: '_updateDomSelection',\n\t\tvalue: function _updateDomSelection(domRoot) {\n\t\t\tvar domSelection = domRoot.ownerDocument.defaultView.getSelection();\n\t\t\tvar oldViewSelection = domSelection && this.domConverter.domSelectionToView(domSelection);\n\n\t\t\tif (oldViewSelection && this.selection.isEqual(oldViewSelection)) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// Multi-range selection is not available in most browsers, and, at least in Chrome, trying to\n\t\t\t// set such selection, that is not continuous, throws an error. Because of that, we will just use anchor\n\t\t\t// and focus of view selection.\n\t\t\t// Since we are not supporting multi-range selection, we also do not need to check if proper editable is\n\t\t\t// selected. If there is any editable selected, it is okay (editable is taken from selection anchor).\n\t\t\tvar anchor = this.domConverter.viewPositionToDom(this.selection.anchor);\n\t\t\tvar focus = this.domConverter.viewPositionToDom(this.selection.focus);\n\n\t\t\tdomSelection.collapse(anchor.parent, anchor.offset);\n\t\t\tdomSelection.extend(focus.parent, focus.offset);\n\t\t}\n\n\t\t/**\n   * Removes DOM selection.\n   *\n   * @private\n   */\n\n\t}, {\n\t\tkey: '_removeDomSelection',\n\t\tvalue: function _removeDomSelection() {\n\t\t\tvar _iteratorNormalCompletion7 = true;\n\t\t\tvar _didIteratorError7 = false;\n\t\t\tvar _iteratorError7 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator7 = this.domDocuments[Symbol.iterator](), _step7; !(_iteratorNormalCompletion7 = (_step7 = _iterator7.next()).done); _iteratorNormalCompletion7 = true) {\n\t\t\t\t\tvar doc = _step7.value;\n\n\t\t\t\t\tvar domSelection = doc.getSelection();\n\n\t\t\t\t\tif (domSelection.rangeCount) {\n\t\t\t\t\t\tvar activeDomElement = doc.activeElement;\n\t\t\t\t\t\tvar viewElement = this.domConverter.getCorrespondingViewElement(activeDomElement);\n\n\t\t\t\t\t\tif (activeDomElement && viewElement) {\n\t\t\t\t\t\t\tdoc.getSelection().removeAllRanges();\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError7 = true;\n\t\t\t\t_iteratorError7 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion7 && _iterator7.return) {\n\t\t\t\t\t\t_iterator7.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError7) {\n\t\t\t\t\t\tthrow _iteratorError7;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Removes fake selection.\n   *\n   * @private\n   */\n\n\t}, {\n\t\tkey: '_removeFakeSelection',\n\t\tvalue: function _removeFakeSelection() {\n\t\t\tvar container = this._fakeSelectionContainer;\n\n\t\t\tif (container) {\n\t\t\t\tcontainer.remove();\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Checks if focus needs to be updated and possibly updates it.\n   *\n   * @private\n   */\n\n\t}, {\n\t\tkey: '_updateFocus',\n\t\tvalue: function _updateFocus() {\n\t\t\tif (this.isFocused) {\n\t\t\t\tvar editable = this.selection.editableElement;\n\n\t\t\t\tif (editable) {\n\t\t\t\t\tthis.domConverter.focus(editable);\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}]);\n\n\treturn Renderer;\n}();\n\nexports.default = Renderer;\n\n\n(0, _mix2.default)(Renderer, _observablemixin2.default);\n\n/***/ }),\n/* 328 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module engine/view/textproxy\n */\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * TextProxy is a wrapper for substring of {@link module:engine/view/text~Text}. Instance of this class is created by\n * {@link module:engine/view/treewalker~TreeWalker} when only a part of {@link module:engine/view/text~Text} needs to be returned.\n *\n * `TextProxy` has an API similar to {@link module:engine/view/text~Text Text} and allows to do most of the common tasks performed\n * on view nodes.\n *\n * **Note:** Some `TextProxy` instances may represent whole text node, not just a part of it.\n * See {@link module:engine/view/textproxy~TextProxy#isPartial}.\n *\n * **Note:** `TextProxy` is a readonly interface.\n *\n * **Note:** `TextProxy` instances are created on the fly basing on the current state of parent {@link module:engine/view/text~Text}.\n * Because of this it is highly unrecommended to store references to `TextProxy instances because they might get\n * invalidated due to operations on Document. Also TextProxy is not a {@link module:engine/view/node~Node} so it can not be\n * inserted as a child of {@link module:engine/view/element~Element}.\n *\n * `TextProxy` instances are created by {@link module:engine/view/treewalker~TreeWalker view tree walker}. You should not need to create\n * an instance of this class by your own.\n */\nvar TextProxy = function () {\n\t/**\n  * Creates a text proxy.\n  *\n  * @protected\n  * @param {module:engine/view/text~Text} textNode Text node which part is represented by this text proxy.\n  * @param {Number} offsetInText Offset in {@link module:engine/view/textproxy~TextProxy#textNode text node}\n  * from which the text proxy starts.\n  * @param {Number} length Text proxy length, that is how many text node's characters, starting from `offsetInText` it represents.\n  * @constructor\n  */\n\tfunction TextProxy(textNode, offsetInText, length) {\n\t\t_classCallCheck(this, TextProxy);\n\n\t\t/**\n   * Reference to the {@link module:engine/view/text~Text} element which TextProxy is a substring.\n   *\n   * @readonly\n   * @member {module:engine/view/text~Text} module:engine/view/textproxy~TextProxy#textNode\n   */\n\t\tthis.textNode = textNode;\n\n\t\tif (offsetInText < 0 || offsetInText > textNode.data.length) {\n\t\t\t/**\n    * Given offsetInText value is incorrect.\n    *\n    * @error view-textproxy-wrong-offsetintext\n    */\n\t\t\tthrow new _ckeditorerror2.default('view-textproxy-wrong-offsetintext: Given offsetInText value is incorrect.');\n\t\t}\n\n\t\tif (length < 0 || offsetInText + length > textNode.data.length) {\n\t\t\t/**\n    * Given length value is incorrect.\n    *\n    * @error view-textproxy-wrong-length\n    */\n\t\t\tthrow new _ckeditorerror2.default('view-textproxy-wrong-length: Given length value is incorrect.');\n\t\t}\n\t\t/**\n   * Text data represented by this text proxy.\n   *\n   * @readonly\n   * @member {String} module:engine/view/textproxy~TextProxy#data\n   */\n\t\tthis.data = textNode.data.substring(offsetInText, offsetInText + length);\n\n\t\t/**\n   * Offset in the `textNode` where this `TextProxy` instance starts.\n   *\n   * @readonly\n   * @member {Number} module:engine/view/textproxy~TextProxy#offsetInText\n   */\n\t\tthis.offsetInText = offsetInText;\n\t}\n\n\t/**\n  * Flag indicating whether `TextProxy` instance covers only part of the original {@link module:engine/view/text~Text text node}\n  * (`true`) or the whole text node (`false`).\n  *\n  * This is `false` when text proxy starts at the very beginning of {@link module:engine/view/textproxy~TextProxy#textNode textNode}\n  * ({@link module:engine/view/textproxy~TextProxy#offsetInText offsetInText} equals `0`) and text proxy sizes is equal to\n  * text node size.\n  *\n  * @readonly\n  * @type {Boolean}\n  */\n\n\n\t_createClass(TextProxy, [{\n\t\tkey: 'is',\n\n\n\t\t/**\n   * Checks whether given view tree object is of given type.\n   *\n   * Read more in {@link module:engine/view/node~Node#is}.\n   *\n   * @param {String} type\n   * @returns {Boolean}\n   */\n\t\tvalue: function is(type) {\n\t\t\treturn type == 'textProxy';\n\t\t}\n\n\t\t/**\n   * Returns ancestors array of this text proxy.\n   *\n   * @param {Object} options Options object.\n   * @param {Boolean} [options.includeNode=false] When set to `true` {#textNode} will be also included in parent's array.\n   * @param {Boolean} [options.parentFirst=false] When set to `true`, array will be sorted from text proxy parent to\n   * root element, otherwise root element will be the first item in the array.\n   * @returns {Array} Array with ancestors.\n   */\n\n\t}, {\n\t\tkey: 'getAncestors',\n\t\tvalue: function getAncestors() {\n\t\t\tvar options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : { includeNode: false, parentFirst: false };\n\n\t\t\tvar ancestors = [];\n\t\t\tvar parent = options.includeNode ? this.textNode : this.parent;\n\n\t\t\twhile (parent !== null) {\n\t\t\t\tancestors[options.parentFirst ? 'push' : 'unshift'](parent);\n\t\t\t\tparent = parent.parent;\n\t\t\t}\n\n\t\t\treturn ancestors;\n\t\t}\n\t}, {\n\t\tkey: 'isPartial',\n\t\tget: function get() {\n\t\t\treturn this.data.length !== this.textNode.data.length;\n\t\t}\n\n\t\t/**\n   * Parent of this text proxy, which is same as parent of text node represented by this text proxy.\n   *\n   * @readonly\n   * @type {module:engine/view/element~Element|module:engine/view/documentfragment~DocumentFragment|null}\n   */\n\n\t}, {\n\t\tkey: 'parent',\n\t\tget: function get() {\n\t\t\treturn this.textNode.parent;\n\t\t}\n\n\t\t/**\n   * Root of this text proxy, which is same as root of text node represented by this text proxy.\n   *\n   * @readonly\n   * @type {module:engine/view/node~Node|module:engine/view/documentfragment~DocumentFragment}\n   */\n\n\t}, {\n\t\tkey: 'root',\n\t\tget: function get() {\n\t\t\treturn this.textNode.root;\n\t\t}\n\n\t\t/**\n   * {@link module:engine/view/document~Document View document} that owns this text proxy, or `null` if the text proxy is inside\n   * {@link module:engine/view/documentfragment~DocumentFragment document fragment}.\n   *\n   * @readonly\n   * @type {module:engine/view/document~Document|null}\n   */\n\n\t}, {\n\t\tkey: 'document',\n\t\tget: function get() {\n\t\t\treturn this.textNode.document;\n\t\t}\n\t}]);\n\n\treturn TextProxy;\n}();\n\nexports.default = TextProxy;\n\n/***/ }),\n/* 329 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _plugin = __webpack_require__(2);\n\nvar _plugin2 = _interopRequireDefault(_plugin);\n\nvar _entercommand = __webpack_require__(330);\n\nvar _entercommand2 = _interopRequireDefault(_entercommand);\n\nvar _enterobserver = __webpack_require__(331);\n\nvar _enterobserver2 = _interopRequireDefault(_enterobserver);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module enter/enter\n */\n\n/**\n * The Enter feature. Handles the <kbd>Enter</kbd> and <kbd>Shift + Enter</kbd> keys in the editor.\n *\n * @extends module:core/plugin~Plugin\n */\nvar Enter = function (_Plugin) {\n\t_inherits(Enter, _Plugin);\n\n\tfunction Enter() {\n\t\t_classCallCheck(this, Enter);\n\n\t\treturn _possibleConstructorReturn(this, (Enter.__proto__ || Object.getPrototypeOf(Enter)).apply(this, arguments));\n\t}\n\n\t_createClass(Enter, [{\n\t\tkey: 'init',\n\t\tvalue: function init() {\n\t\t\tvar editor = this.editor;\n\t\t\tvar editingView = editor.editing.view;\n\n\t\t\teditingView.addObserver(_enterobserver2.default);\n\n\t\t\teditor.commands.set('enter', new _entercommand2.default(editor));\n\n\t\t\t// TODO We may use the keystroke handler for that.\n\t\t\tthis.listenTo(editingView, 'enter', function (evt, data) {\n\t\t\t\teditor.execute('enter');\n\t\t\t\tdata.preventDefault();\n\t\t\t}, { priority: 'low' });\n\t\t}\n\t}]);\n\n\treturn Enter;\n}(_plugin2.default);\n\nexports.default = Enter;\n\n/***/ }),\n/* 330 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _command = __webpack_require__(15);\n\nvar _command2 = _interopRequireDefault(_command);\n\nvar _position = __webpack_require__(1);\n\nvar _position2 = _interopRequireDefault(_position);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module enter/entercommand\n */\n\n/**\n * Enter command. It is used by the {@link module:enter/enter~Enter Enter feature} to handle the <kbd>Enter</kbd> key.\n *\n * @extends modue:core/command/command~Command\n */\nvar EnterCommand = function (_Command) {\n\t_inherits(EnterCommand, _Command);\n\n\tfunction EnterCommand() {\n\t\t_classCallCheck(this, EnterCommand);\n\n\t\treturn _possibleConstructorReturn(this, (EnterCommand.__proto__ || Object.getPrototypeOf(EnterCommand)).apply(this, arguments));\n\t}\n\n\t_createClass(EnterCommand, [{\n\t\tkey: '_doExecute',\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tvalue: function _doExecute() {\n\t\t\tvar _this2 = this;\n\n\t\t\tvar doc = this.editor.document;\n\t\t\tvar batch = doc.batch();\n\n\t\t\tdoc.enqueueChanges(function () {\n\t\t\t\tenterBlock(_this2.editor.data, batch, doc.selection, doc.schema);\n\n\t\t\t\t_this2.fire('afterExecute', { batch: batch });\n\t\t\t});\n\t\t}\n\t}]);\n\n\treturn EnterCommand;\n}(_command2.default);\n\n// Creates a new block in the way that the <kbd>Enter</kbd> key is expected to work.\n//\n// @param {engine.controller.DataController} dataController\n// @param {module:engine/model/batch~Batch} batch A batch to which the deltas will be added.\n// @param {module:engine/model/selection~Selection} selection Selection on which the action should be performed.\n// @param {module:engine/model/schema~Schema} schema\n\n\nexports.default = EnterCommand;\nfunction enterBlock(dataController, batch, selection, schema) {\n\tvar isSelectionEmpty = selection.isCollapsed;\n\tvar range = selection.getFirstRange();\n\tvar startElement = range.start.parent;\n\tvar endElement = range.end.parent;\n\n\t// Do nothing if selection starts or ends inside `limit` elements.\n\tif (schema.limits.has(startElement.name) || schema.limits.has(endElement.name)) {\n\t\treturn;\n\t}\n\n\t// Don't touch the root.\n\tif (startElement.root == startElement) {\n\t\tif (!isSelectionEmpty) {\n\t\t\tdataController.deleteContent(selection, batch);\n\t\t}\n\n\t\treturn;\n\t}\n\n\tif (isSelectionEmpty) {\n\t\tsplitBlock(batch, selection, range.start);\n\t} else {\n\t\tvar shouldMerge = range.start.isAtStart && range.end.isAtEnd;\n\t\tvar isContainedWithinOneElement = startElement == endElement;\n\n\t\tdataController.deleteContent(selection, batch, { merge: shouldMerge });\n\n\t\tif (!shouldMerge) {\n\t\t\t// Partially selected elements.\n\t\t\t//\n\t\t\t// <h>x[xx]x</h>\t\t-> <h>x^x</h>\t\t\t-> <h>x</h><h>^x</h>\n\t\t\tif (isContainedWithinOneElement) {\n\t\t\t\tsplitBlock(batch, selection, selection.focus);\n\t\t\t}\n\t\t\t// Selection over multiple elements.\n\t\t\t//\n\t\t\t// <h>x[x</h><p>y]y<p>\t-> <h>x^</h><p>y</p>\t-> <h>x</h><p>^y</p>\n\t\t\telse {\n\t\t\t\t\tselection.collapse(endElement);\n\t\t\t\t}\n\t\t}\n\t}\n}\n\nfunction splitBlock(batch, selection, splitPos) {\n\tif (splitPos.isAtEnd) {\n\t\t// If the split is at the end of element, instead of splitting, just create a clone of position's parent\n\t\t// element and insert it after cloned element. The result is the same but less operations are taken\n\t\t// and it's more semantically correct (when it comes to operational transformation).\n\t\tvar oldElement = splitPos.parent;\n\t\tvar newElement = new oldElement.constructor(oldElement.name, oldElement.getAttributes());\n\n\t\tbatch.insert(_position2.default.createAfter(splitPos.parent), newElement);\n\t} else {\n\t\tbatch.split(splitPos);\n\t}\n\n\tselection.collapse(splitPos.parent.nextSibling);\n}\n\n/***/ }),\n/* 331 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _observer = __webpack_require__(47);\n\nvar _observer2 = _interopRequireDefault(_observer);\n\nvar _domeventdata = __webpack_require__(118);\n\nvar _domeventdata2 = _interopRequireDefault(_domeventdata);\n\nvar _keyboard = __webpack_require__(21);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module enter/enterobserver\n */\n\n/**\n * Enter observer introduces the {@link module:engine/view/document~Document#event:enter} event.\n *\n * @extends module:engine/view/observer~Observer\n */\nvar EnterObserver = function (_Observer) {\n  _inherits(EnterObserver, _Observer);\n\n  function EnterObserver(document) {\n    _classCallCheck(this, EnterObserver);\n\n    var _this = _possibleConstructorReturn(this, (EnterObserver.__proto__ || Object.getPrototypeOf(EnterObserver)).call(this, document));\n\n    document.on('keydown', function (evt, data) {\n      if (_this.isEnabled && data.keyCode == _keyboard.keyCodes.enter) {\n        document.fire('enter', new _domeventdata2.default(document, data.domEvent));\n      }\n    });\n    return _this;\n  }\n\n  /**\n   * @inheritDoc\n   */\n\n\n  _createClass(EnterObserver, [{\n    key: 'observe',\n    value: function observe() {}\n  }]);\n\n  return EnterObserver;\n}(_observer2.default);\n\n/**\n * Event fired when the user presses the <kbd>Enter</kbd> key.\n *\n * Note: This event is fired by the {@link module:enter/enterobserver~EnterObserver observer}\n * (usually registered by the {@link module:enter/enter~Enter Enter feature}).\n *\n * @event module:engine/view/document~Document#event:enter\n * @param {module:engine/view/observer/domeventdata~DomEventData} data\n */\n\n\nexports.default = EnterObserver;\n\n/***/ }),\n/* 332 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _headingengine = __webpack_require__(172);\n\nvar _headingengine2 = _interopRequireDefault(_headingengine);\n\nvar _plugin = __webpack_require__(2);\n\nvar _plugin2 = _interopRequireDefault(_plugin);\n\nvar _model = __webpack_require__(380);\n\nvar _model2 = _interopRequireDefault(_model);\n\nvar _createlistdropdown = __webpack_require__(371);\n\nvar _createlistdropdown2 = _interopRequireDefault(_createlistdropdown);\n\nvar _collection = __webpack_require__(78);\n\nvar _collection2 = _interopRequireDefault(_collection);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module heading/heading\n */\n\n/**\n * The headings feature. It introduces the `headings` drop-down list and the `heading` command which allow\n * to convert paragraphs into headings.\n *\n * @extends module:core/plugin~Plugin\n */\nvar Heading = function (_Plugin) {\n\t_inherits(Heading, _Plugin);\n\n\tfunction Heading() {\n\t\t_classCallCheck(this, Heading);\n\n\t\treturn _possibleConstructorReturn(this, (Heading.__proto__ || Object.getPrototypeOf(Heading)).apply(this, arguments));\n\t}\n\n\t_createClass(Heading, [{\n\t\tkey: 'init',\n\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tvalue: function init() {\n\t\t\tvar _this2 = this;\n\n\t\t\tvar editor = this.editor;\n\t\t\tvar command = editor.commands.get('heading');\n\t\t\tvar options = command.options;\n\t\t\tvar collection = new _collection2.default();\n\n\t\t\t// Add options to collection.\n\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\tvar _didIteratorError = false;\n\t\t\tvar _iteratorError = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator = options[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\tvar _step$value = _step.value,\n\t\t\t\t\t    id = _step$value.id,\n\t\t\t\t\t    label = _step$value.label;\n\n\t\t\t\t\tcollection.add(new _model2.default({\n\t\t\t\t\t\tid: id, label: label\n\t\t\t\t\t}));\n\t\t\t\t}\n\n\t\t\t\t// Create dropdown model.\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError = true;\n\t\t\t\t_iteratorError = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tvar dropdownModel = new _model2.default({\n\t\t\t\twithText: true,\n\t\t\t\titems: collection\n\t\t\t});\n\n\t\t\t// Bind dropdown model to command.\n\t\t\tdropdownModel.bind('isEnabled').to(command, 'isEnabled');\n\t\t\tdropdownModel.bind('label').to(command, 'value', function (option) {\n\t\t\t\treturn option.label;\n\t\t\t});\n\n\t\t\t// Register UI component.\n\t\t\teditor.ui.componentFactory.add('headings', function (locale) {\n\t\t\t\tvar dropdown = (0, _createlistdropdown2.default)(dropdownModel, locale);\n\n\t\t\t\t// Execute command when an item from the dropdown is selected.\n\t\t\t\t_this2.listenTo(dropdown, 'execute', function (_ref) {\n\t\t\t\t\tvar id = _ref.source.id;\n\n\t\t\t\t\teditor.execute('heading', { id: id });\n\t\t\t\t\teditor.editing.view.focus();\n\t\t\t\t});\n\n\t\t\t\treturn dropdown;\n\t\t\t});\n\t\t}\n\t}], [{\n\t\tkey: 'requires',\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tget: function get() {\n\t\t\treturn [_headingengine2.default];\n\t\t}\n\t}]);\n\n\treturn Heading;\n}(_plugin2.default);\n\nexports.default = Heading;\n\n/***/ }),\n/* 333 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _command = __webpack_require__(15);\n\nvar _command2 = _interopRequireDefault(_command);\n\nvar _rootelement = __webpack_require__(166);\n\nvar _rootelement2 = _interopRequireDefault(_rootelement);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _toConsumableArray(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } else { return Array.from(arr); } }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module heading/headingcommand\n */\n\n/**\n * The heading command. It is used by the {@link module:heading/heading~Heading heading feature} to apply headings.\n *\n * @extends module:core/command/command~Command\n */\nvar HeadingCommand = function (_Command) {\n\t_inherits(HeadingCommand, _Command);\n\n\t/**\n  * Creates an instance of the command.\n  *\n  * @param {module:core/editor/editor~Editor} editor Editor instance.\n  * @param {Array.<module:heading/headingcommand~HeadingOption>} options Heading options to be used by the command instance.\n  */\n\tfunction HeadingCommand(editor, options, defaultOptionId) {\n\t\t_classCallCheck(this, HeadingCommand);\n\n\t\t/**\n   * Heading options used by this command.\n   *\n   * @readonly\n   * @member {module:heading/headingcommand~HeadingOption}\n   */\n\t\tvar _this = _possibleConstructorReturn(this, (HeadingCommand.__proto__ || Object.getPrototypeOf(HeadingCommand)).call(this, editor));\n\n\t\t_this.options = options;\n\n\t\t/**\n   * The id of the default option among {@link #options}.\n   *\n   * @readonly\n   * @private\n   * @member {module:heading/headingcommand~HeadingOption#id}\n   */\n\t\t_this._defaultOptionId = defaultOptionId;\n\n\t\t/**\n   * The currently selected heading option.\n   *\n   * @readonly\n   * @observable\n   * @member {module:heading/headingcommand~HeadingOption} #value\n   */\n\t\t_this.set('value', _this.defaultOption);\n\n\t\t// Update current value each time changes are done on document.\n\t\t_this.listenTo(editor.document, 'changesDone', function () {\n\t\t\treturn _this._updateValue();\n\t\t});\n\t\treturn _this;\n\t}\n\n\t/**\n  * The default option.\n  *\n  * @member {module:heading/headingcommand~HeadingOption} #defaultOption\n  */\n\n\n\t_createClass(HeadingCommand, [{\n\t\tkey: '_doExecute',\n\n\n\t\t/**\n   * Executes command.\n   *\n   * @protected\n   * @param {Object} [options] Options for executed command.\n   * @param {String} [options.id] The identifier of the heading option that should be applied. It should be one of the\n   * {@link module:heading/headingcommand~HeadingOption heading options} provided to the command constructor. If this parameter is not\n   * provided,\n   * the value from {@link #defaultOption defaultOption} will be used.\n   * @param {module:engine/model/batch~Batch} [options.batch] Batch to collect all the change steps.\n   * New batch will be created if this option is not set.\n   */\n\t\tvalue: function _doExecute() {\n\t\t\tvar _this2 = this;\n\n\t\t\tvar options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n\n\t\t\t// TODO: What should happen if option is not found?\n\t\t\tvar id = options.id || this.defaultOption.id;\n\t\t\tvar doc = this.editor.document;\n\t\t\tvar selection = doc.selection;\n\t\t\tvar startPosition = selection.getFirstPosition();\n\t\t\tvar elements = [];\n\t\t\t// Storing selection ranges and direction to fix selection after renaming. See ckeditor5-engine#367.\n\t\t\tvar ranges = [].concat(_toConsumableArray(selection.getRanges()));\n\t\t\tvar isSelectionBackward = selection.isBackward;\n\t\t\t// If current option is same as new option - toggle already applied option back to default one.\n\t\t\tvar shouldRemove = id === this.value.id;\n\n\t\t\t// Collect elements to change option.\n\t\t\t// This implementation may not be future proof but it's satisfactory at this stage.\n\t\t\tif (selection.isCollapsed) {\n\t\t\t\tvar block = findTopmostBlock(startPosition);\n\n\t\t\t\tif (block) {\n\t\t\t\t\telements.push(block);\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\t\tvar _didIteratorError = false;\n\t\t\t\tvar _iteratorError = undefined;\n\n\t\t\t\ttry {\n\t\t\t\t\tfor (var _iterator = ranges[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\t\tvar range = _step.value;\n\n\t\t\t\t\t\tvar startBlock = findTopmostBlock(range.start);\n\t\t\t\t\t\tvar endBlock = findTopmostBlock(range.end, false);\n\n\t\t\t\t\t\telements.push(startBlock);\n\n\t\t\t\t\t\twhile (startBlock !== endBlock) {\n\t\t\t\t\t\t\tstartBlock = startBlock.nextSibling;\n\t\t\t\t\t\t\telements.push(startBlock);\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t} catch (err) {\n\t\t\t\t\t_didIteratorError = true;\n\t\t\t\t\t_iteratorError = err;\n\t\t\t\t} finally {\n\t\t\t\t\ttry {\n\t\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t\t}\n\t\t\t\t\t} finally {\n\t\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tdoc.enqueueChanges(function () {\n\t\t\t\tvar batch = options.batch || doc.batch();\n\n\t\t\t\tvar _iteratorNormalCompletion2 = true;\n\t\t\t\tvar _didIteratorError2 = false;\n\t\t\t\tvar _iteratorError2 = undefined;\n\n\t\t\t\ttry {\n\t\t\t\t\tfor (var _iterator2 = elements[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {\n\t\t\t\t\t\tvar element = _step2.value;\n\n\t\t\t\t\t\t// When removing applied option.\n\t\t\t\t\t\tif (shouldRemove) {\n\t\t\t\t\t\t\tif (element.name === id) {\n\t\t\t\t\t\t\t\tbatch.rename(element, _this2.defaultOption.id);\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t\t// When applying new option.\n\t\t\t\t\t\telse {\n\t\t\t\t\t\t\t\tbatch.rename(element, id);\n\t\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t\t// If range's selection start/end is placed directly in renamed block - we need to restore it's position\n\t\t\t\t\t// after renaming, because renaming puts new element there.\n\t\t\t\t} catch (err) {\n\t\t\t\t\t_didIteratorError2 = true;\n\t\t\t\t\t_iteratorError2 = err;\n\t\t\t\t} finally {\n\t\t\t\t\ttry {\n\t\t\t\t\t\tif (!_iteratorNormalCompletion2 && _iterator2.return) {\n\t\t\t\t\t\t\t_iterator2.return();\n\t\t\t\t\t\t}\n\t\t\t\t\t} finally {\n\t\t\t\t\t\tif (_didIteratorError2) {\n\t\t\t\t\t\t\tthrow _iteratorError2;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\tdoc.selection.setRanges(ranges, isSelectionBackward);\n\t\t\t});\n\t\t}\n\n\t\t/**\n   * Returns the option by a given ID.\n   *\n   * @private\n   * @param {String} id\n   * @returns {module:heading/headingcommand~HeadingOption}\n   */\n\n\t}, {\n\t\tkey: '_getOptionById',\n\t\tvalue: function _getOptionById(id) {\n\t\t\treturn this.options.find(function (item) {\n\t\t\t\treturn item.id === id;\n\t\t\t}) || this.defaultOption;\n\t\t}\n\n\t\t/**\n   * Updates command's {@link #value value} based on current selection.\n   *\n   * @private\n   */\n\n\t}, {\n\t\tkey: '_updateValue',\n\t\tvalue: function _updateValue() {\n\t\t\tvar position = this.editor.document.selection.getFirstPosition();\n\t\t\tvar block = findTopmostBlock(position);\n\n\t\t\tif (block) {\n\t\t\t\tthis.value = this._getOptionById(block.name);\n\t\t\t}\n\t\t}\n\t}, {\n\t\tkey: 'defaultOption',\n\t\tget: function get() {\n\t\t\t// See https://github.com/ckeditor/ckeditor5/issues/98.\n\t\t\treturn this._getOptionById(this._defaultOptionId);\n\t\t}\n\t}]);\n\n\treturn HeadingCommand;\n}(_command2.default);\n\n// Looks for the topmost element in the position's ancestor (up to an element in the root).\n//\n// NOTE: This method does not check the schema directly &mdash; it assumes that only block elements can be placed directly inside\n// the root.\n//\n// @private\n// @param {engine.model.Position} position\n// @param {Boolean} [nodeAfter=true] When the position is placed inside the root element, this will determine if the element before\n// or after a given position will be returned.\n// @returns {engine.model.Element}\n\n\nexports.default = HeadingCommand;\nfunction findTopmostBlock(position) {\n\tvar nodeAfter = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : true;\n\n\tvar parent = position.parent;\n\n\t// If position is placed inside root - get element after/before it.\n\tif (parent instanceof _rootelement2.default) {\n\t\treturn nodeAfter ? position.nodeAfter : position.nodeBefore;\n\t}\n\n\twhile (!(parent.parent instanceof _rootelement2.default)) {\n\t\tparent = parent.parent;\n\t}\n\n\treturn parent;\n}\n\n/**\n * Heading option descriptor.\n *\n * @typedef {Object} module:heading/headingcommand~HeadingOption\n * @property {String} id Option identifier. It will be used as the element's name in the model.\n * @property {String} element The name of the view element that will be used to represent the model element in the view.\n * @property {String} label The display name of the option.\n */\n\n/***/ }),\n/* 334 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _plugin = __webpack_require__(2);\n\nvar _plugin2 = _interopRequireDefault(_plugin);\n\nvar _imageengine = __webpack_require__(173);\n\nvar _imageengine2 = _interopRequireDefault(_imageengine);\n\nvar _widget = __webpack_require__(347);\n\nvar _widget2 = _interopRequireDefault(_widget);\n\nvar _imagetextalternative = __webpack_require__(343);\n\nvar _imagetextalternative2 = _interopRequireDefault(_imagetextalternative);\n\n__webpack_require__(524);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module image/image\n */\n\n/**\n * The image plugin.\n *\n * Uses {@link module:image/image/imageengine~ImageEngine}.\n *\n * @extends module:core/plugin~Plugin\n */\nvar Image = function (_Plugin) {\n  _inherits(Image, _Plugin);\n\n  function Image() {\n    _classCallCheck(this, Image);\n\n    return _possibleConstructorReturn(this, (Image.__proto__ || Object.getPrototypeOf(Image)).apply(this, arguments));\n  }\n\n  _createClass(Image, null, [{\n    key: 'requires',\n\n    /**\n     * @inheritDoc\n     */\n    get: function get() {\n      return [_imageengine2.default, _widget2.default, _imagetextalternative2.default];\n    }\n  }]);\n\n  return Image;\n}(_plugin2.default);\n\nexports.default = Image;\n\n/***/ }),\n/* 335 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\nexports.viewToModelImage = viewToModelImage;\nexports.createImageAttributeConverter = createImageAttributeConverter;\n\nvar _element = __webpack_require__(5);\n\nvar _element2 = _interopRequireDefault(_element);\n\nvar _position = __webpack_require__(1);\n\nvar _position2 = _interopRequireDefault(_position);\n\nvar _writer = __webpack_require__(28);\n\nvar _writer2 = _interopRequireDefault(_writer);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Returns function that converts image view representation:\n *\n *\t\t<figure class=\"image\"><img src=\"...\" alt=\"...\"></img></figure>\n *\n * to model representation:\n *\n *\t\t<image src=\"...\" alt=\"...\"></image>\n *\n * @returns {Function}\n */\nfunction viewToModelImage() {\n\treturn function (evt, data, consumable, conversionApi) {\n\t\tvar viewFigureElement = data.input;\n\n\t\t// *** Step 1: Validate conversion.\n\t\t// Check if figure element can be consumed.\n\t\tif (!consumable.test(viewFigureElement, { name: true, class: 'image' })) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Check if image element can be converted in current context.\n\t\tif (!conversionApi.schema.check({ name: 'image', inside: data.context, attributes: 'src' })) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Check if img element is placed inside figure element and can be consumed with `src` attribute.\n\t\tvar viewImg = viewFigureElement.getChild(0);\n\n\t\tif (!viewImg || viewImg.name != 'img' || !consumable.test(viewImg, { name: true, attribute: 'src' })) {\n\t\t\treturn;\n\t\t}\n\n\t\t// *** Step2: Convert to model.\n\t\tconsumable.consume(viewFigureElement, { name: true, class: 'image' });\n\t\tconsumable.consume(viewImg, { name: true, attribute: 'src' });\n\n\t\t// Create model element.\n\t\tvar modelImage = new _element2.default('image', {\n\t\t\tsrc: viewImg.getAttribute('src')\n\t\t});\n\n\t\t// Convert `alt` attribute if present.\n\t\tif (consumable.consume(viewImg, { attribute: ['alt'] })) {\n\t\t\tmodelImage.setAttribute('alt', viewImg.getAttribute('alt'));\n\t\t}\n\n\t\t// Convert children of converted view element and append them to `modelImage`.\n\t\t// TODO https://github.com/ckeditor/ckeditor5-engine/issues/736.\n\t\tdata.context.push(modelImage);\n\t\tvar modelChildren = conversionApi.convertChildren(viewFigureElement, consumable, data);\n\t\tvar insertPosition = _position2.default.createAt(modelImage, 'end');\n\t\t_writer2.default.insert(insertPosition, modelChildren);\n\t\tdata.context.pop();\n\n\t\tdata.output = modelImage;\n\t};\n}\n\n/**\n * Creates image attribute converter for provided model conversion dispatchers.\n *\n * @param {Array.<module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher>} dispatchers\n * @param {String} attributeName\n */\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module image/image/converters\n */\n\nfunction createImageAttributeConverter(dispatchers, attributeName) {\n\tvar _iteratorNormalCompletion = true;\n\tvar _didIteratorError = false;\n\tvar _iteratorError = undefined;\n\n\ttry {\n\t\tfor (var _iterator = dispatchers[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\tvar dispatcher = _step.value;\n\n\t\t\tdispatcher.on('addAttribute:' + attributeName + ':image', modelToViewAttributeConverter);\n\t\t\tdispatcher.on('changeAttribute:' + attributeName + ':image', modelToViewAttributeConverter);\n\t\t\tdispatcher.on('removeAttribute:' + attributeName + ':image', modelToViewAttributeConverter);\n\t\t}\n\t} catch (err) {\n\t\t_didIteratorError = true;\n\t\t_iteratorError = err;\n\t} finally {\n\t\ttry {\n\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t_iterator.return();\n\t\t\t}\n\t\t} finally {\n\t\t\tif (_didIteratorError) {\n\t\t\t\tthrow _iteratorError;\n\t\t\t}\n\t\t}\n\t}\n}\n\n// Model to view image converter converting given attribute, and adding it to `img` element nested inside `figure` element.\n//\n// @private\nfunction modelToViewAttributeConverter(evt, data, consumable, conversionApi) {\n\tvar parts = evt.name.split(':');\n\tvar consumableType = parts[0] + ':' + parts[1];\n\n\tif (!consumable.consume(data.item, consumableType)) {\n\t\treturn;\n\t}\n\n\tvar figure = conversionApi.mapper.toViewElement(data.item);\n\tvar img = figure.getChild(0);\n\n\tif (parts[0] == 'removeAttribute') {\n\t\timg.removeAttribute(data.attributeKey);\n\t} else {\n\t\timg.setAttribute(data.attributeKey, data.attributeNewValue);\n\t}\n}\n\n/***/ }),\n/* 336 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _plugin = __webpack_require__(2);\n\nvar _plugin2 = _interopRequireDefault(_plugin);\n\nvar _imagecaptionengine = __webpack_require__(337);\n\nvar _imagecaptionengine2 = _interopRequireDefault(_imagecaptionengine);\n\n__webpack_require__(522);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module image/imagecaption\n */\n\n/**\n * The image caption plugin.\n *\n * @extends module:core/plugin~Plugin\n */\nvar ImageCaption = function (_Plugin) {\n  _inherits(ImageCaption, _Plugin);\n\n  function ImageCaption() {\n    _classCallCheck(this, ImageCaption);\n\n    return _possibleConstructorReturn(this, (ImageCaption.__proto__ || Object.getPrototypeOf(ImageCaption)).apply(this, arguments));\n  }\n\n  _createClass(ImageCaption, null, [{\n    key: 'requires',\n\n    /**\n     * @inheritDoc\n     */\n    get: function get() {\n      return [_imagecaptionengine2.default];\n    }\n  }]);\n\n  return ImageCaption;\n}(_plugin2.default);\n\nexports.default = ImageCaption;\n\n/***/ }),\n/* 337 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _plugin = __webpack_require__(2);\n\nvar _plugin2 = _interopRequireDefault(_plugin);\n\nvar _treewalker = __webpack_require__(38);\n\nvar _treewalker2 = _interopRequireDefault(_treewalker);\n\nvar _element = __webpack_require__(5);\n\nvar _element2 = _interopRequireDefault(_element);\n\nvar _containerelement = __webpack_require__(39);\n\nvar _containerelement2 = _interopRequireDefault(_containerelement);\n\nvar _element3 = __webpack_require__(20);\n\nvar _element4 = _interopRequireDefault(_element3);\n\nvar _position = __webpack_require__(24);\n\nvar _position2 = _interopRequireDefault(_position);\n\nvar _range = __webpack_require__(33);\n\nvar _range2 = _interopRequireDefault(_range);\n\nvar _writer = __webpack_require__(77);\n\nvar _writer2 = _interopRequireDefault(_writer);\n\nvar _position3 = __webpack_require__(1);\n\nvar _position4 = _interopRequireDefault(_position3);\n\nvar _buildviewconverter = __webpack_require__(46);\n\nvar _buildviewconverter2 = _interopRequireDefault(_buildviewconverter);\n\nvar _matcher = __webpack_require__(117);\n\nvar _matcher2 = _interopRequireDefault(_matcher);\n\nvar _utils = __webpack_require__(40);\n\nvar _utils2 = __webpack_require__(338);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module image/imagecaption/imagecaptionengine\n */\n\n/**\n * The image caption engine plugin.\n *\n * Registers proper converters. Takes care of adding caption element if image without it is inserted to model document.\n *\n * @extends module:core/plugin~Plugin\n */\nvar ImageCaptionEngine = function (_Plugin) {\n\t_inherits(ImageCaptionEngine, _Plugin);\n\n\tfunction ImageCaptionEngine() {\n\t\t_classCallCheck(this, ImageCaptionEngine);\n\n\t\treturn _possibleConstructorReturn(this, (ImageCaptionEngine.__proto__ || Object.getPrototypeOf(ImageCaptionEngine)).apply(this, arguments));\n\t}\n\n\t_createClass(ImageCaptionEngine, [{\n\t\tkey: 'init',\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tvalue: function init() {\n\t\t\tvar _this2 = this;\n\n\t\t\tvar editor = this.editor;\n\t\t\tvar document = editor.document;\n\t\t\tvar viewDocument = editor.editing.view;\n\t\t\tvar schema = document.schema;\n\t\t\tvar data = editor.data;\n\t\t\tvar editing = editor.editing;\n\n\t\t\t/**\n    * Last selected caption editable.\n    * It is used for hiding editable when is empty and image widget is no longer selected.\n    *\n    * @member {module:image/imagecaption/imagecaptionengine~ImageCaptionEngine} #_lastSelectedEditable\n    */\n\n\t\t\t// Schema configuration.\n\t\t\tschema.registerItem('caption');\n\t\t\tschema.allow({ name: '$inline', inside: 'caption' });\n\t\t\tschema.allow({ name: 'caption', inside: 'image' });\n\t\t\tschema.limits.add('caption');\n\n\t\t\t// Add caption element to each image inserted without it.\n\t\t\tdocument.on('change', insertMissingCaptionElement);\n\n\t\t\t// View to model converter for data pipeline.\n\t\t\tvar matcher = new _matcher2.default(function (element) {\n\t\t\t\tvar parent = element.parent;\n\n\t\t\t\t// Convert only captions for images.\n\t\t\t\tif (element.name == 'figcaption' && parent && parent.name == 'figure' && parent.hasClass('image')) {\n\t\t\t\t\treturn { name: true };\n\t\t\t\t}\n\n\t\t\t\treturn null;\n\t\t\t});\n\n\t\t\t(0, _buildviewconverter2.default)().for(data.viewToModel).from(matcher).toElement('caption');\n\n\t\t\t// Model to view converter for data pipeline.\n\t\t\tdata.modelToView.on('insert:caption', captionModelToView(new _containerelement2.default('figcaption')));\n\n\t\t\t// Model to view converter for editing pipeline.\n\t\t\tediting.modelToView.on('insert:caption', captionModelToView((0, _utils2.captionElementCreator)(viewDocument)));\n\n\t\t\t// Adding / removing caption element when there is no text in the model.\n\t\t\tvar selection = viewDocument.selection;\n\n\t\t\t// Update view before each rendering.\n\t\t\tthis.listenTo(viewDocument, 'render', function () {\n\t\t\t\t// Check if there is an empty caption view element to remove.\n\t\t\t\t_this2._removeEmptyCaption();\n\n\t\t\t\t// Check if image widget is selected and caption view element needs to be added.\n\t\t\t\t_this2._addCaption();\n\n\t\t\t\t// If selection is currently inside caption editable - store it to hide when empty.\n\t\t\t\tvar editableElement = selection.editableElement;\n\n\t\t\t\tif (editableElement && (0, _utils2.isCaption)(selection.editableElement)) {\n\t\t\t\t\t_this2._lastSelectedEditable = selection.editableElement;\n\t\t\t\t}\n\t\t\t}, { priority: 'high' });\n\t\t}\n\n\t\t/**\n   * Checks if there is an empty caption element to remove from view.\n   *\n   * @private\n   */\n\n\t}, {\n\t\tkey: '_removeEmptyCaption',\n\t\tvalue: function _removeEmptyCaption() {\n\t\t\tvar viewSelection = this.editor.editing.view.selection;\n\t\t\tvar viewCaptionElement = this._lastSelectedEditable;\n\n\t\t\t// No caption to hide.\n\t\t\tif (!viewCaptionElement) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// If selection is placed inside caption - do not remove it.\n\t\t\tif (viewSelection.editableElement === viewCaptionElement) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// Do not remove caption if selection is placed on image that contains that caption.\n\t\t\tvar selectedElement = viewSelection.getSelectedElement();\n\n\t\t\tif (selectedElement && (0, _utils.isImageWidget)(selectedElement)) {\n\t\t\t\tvar viewImage = viewCaptionElement.findAncestor(function (element) {\n\t\t\t\t\treturn element == selectedElement;\n\t\t\t\t});\n\n\t\t\t\tif (viewImage) {\n\t\t\t\t\treturn;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Remove image caption if its empty.\n\t\t\tif (viewCaptionElement.childCount === 0) {\n\t\t\t\tvar mapper = this.editor.editing.mapper;\n\t\t\t\t_writer2.default.remove(_range2.default.createOn(viewCaptionElement));\n\t\t\t\tmapper.unbindViewElement(viewCaptionElement);\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Checks if selected image needs a new caption element inside.\n   *\n   * @private\n   */\n\n\t}, {\n\t\tkey: '_addCaption',\n\t\tvalue: function _addCaption() {\n\t\t\tvar editing = this.editor.editing;\n\t\t\tvar selection = editing.view.selection;\n\t\t\tvar imageFigure = selection.getSelectedElement();\n\t\t\tvar mapper = editing.mapper;\n\t\t\tvar editableCreator = (0, _utils2.captionElementCreator)(editing.view);\n\n\t\t\tif (imageFigure && (0, _utils.isImageWidget)(imageFigure)) {\n\t\t\t\tvar modelImage = mapper.toModelElement(imageFigure);\n\t\t\t\tvar modelCaption = (0, _utils2.getCaptionFromImage)(modelImage);\n\t\t\t\tvar viewCaption = mapper.toViewElement(modelCaption);\n\n\t\t\t\tif (!viewCaption) {\n\t\t\t\t\tviewCaption = editableCreator();\n\n\t\t\t\t\tvar viewPosition = _position2.default.createAt(imageFigure, 'end');\n\t\t\t\t\tmapper.bindElements(modelCaption, viewCaption);\n\t\t\t\t\t_writer2.default.insert(viewPosition, viewCaption);\n\t\t\t\t}\n\n\t\t\t\tthis._lastSelectedEditable = viewCaption;\n\t\t\t}\n\t\t}\n\t}]);\n\n\treturn ImageCaptionEngine;\n}(_plugin2.default);\n\n// Checks whether data inserted to the model document have image element that has no caption element inside it.\n// If there is none - adds it to the image element.\n//\n// @private\n\n\nexports.default = ImageCaptionEngine;\nfunction insertMissingCaptionElement(evt, changeType, data, batch) {\n\tif (changeType !== 'insert') {\n\t\treturn;\n\t}\n\n\tvar walker = new _treewalker2.default({\n\t\tboundaries: data.range,\n\t\tignoreElementEnd: true\n\t});\n\n\tvar _iteratorNormalCompletion = true;\n\tvar _didIteratorError = false;\n\tvar _iteratorError = undefined;\n\n\ttry {\n\t\tvar _loop = function _loop() {\n\t\t\tvar value = _step.value;\n\n\t\t\tvar item = value.item;\n\n\t\t\tif (value.type == 'elementStart' && (0, _utils.isImage)(item) && !(0, _utils2.getCaptionFromImage)(item)) {\n\t\t\t\tbatch.document.enqueueChanges(function () {\n\t\t\t\t\tbatch.insert(_position4.default.createAt(item, 'end'), new _element2.default('caption'));\n\t\t\t\t});\n\t\t\t}\n\t\t};\n\n\t\tfor (var _iterator = walker[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t_loop();\n\t\t}\n\t} catch (err) {\n\t\t_didIteratorError = true;\n\t\t_iteratorError = err;\n\t} finally {\n\t\ttry {\n\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t_iterator.return();\n\t\t\t}\n\t\t} finally {\n\t\t\tif (_didIteratorError) {\n\t\t\t\tthrow _iteratorError;\n\t\t\t}\n\t\t}\n\t}\n}\n\n// Creates a converter that converts image caption model element to view element.\n//\n// @private\n// @param {Function|module:engine/view/element~Element} elementCreator\n// @return {Function}\nfunction captionModelToView(elementCreator) {\n\treturn function (evt, data, consumable, conversionApi) {\n\t\tvar captionElement = data.item;\n\n\t\tif ((0, _utils.isImage)(captionElement.parent) && captionElement.childCount > 0) {\n\t\t\tif (!consumable.consume(data.item, 'insert')) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tvar imageFigure = conversionApi.mapper.toViewElement(data.range.start.parent);\n\t\t\tvar viewElement = elementCreator instanceof _element4.default ? elementCreator.clone(true) : elementCreator(data, consumable, conversionApi);\n\n\t\t\tvar viewPosition = _position2.default.createAt(imageFigure, 'end');\n\t\t\tconversionApi.mapper.bindElements(data.item, viewElement);\n\t\t\t_writer2.default.insert(viewPosition, viewElement);\n\t\t}\n\t};\n}\n\n/***/ }),\n/* 338 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.captionElementCreator = captionElementCreator;\nexports.isCaption = isCaption;\nexports.getCaptionFromImage = getCaptionFromImage;\n\nvar _editableelement = __webpack_require__(73);\n\nvar _editableelement2 = _interopRequireDefault(_editableelement);\n\nvar _element = __webpack_require__(5);\n\nvar _element2 = _interopRequireDefault(_element);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module image/imagecaption/utils\n */\n\nvar captionSymbol = Symbol('imageCaption');\n\n/**\n * Returns a function that creates caption editable element for the given {@link module:engine/view/document~Document}.\n *\n * @param {module:engine/view/document~Document} viewDocument\n * @return {Function}\n */\nfunction captionElementCreator(viewDocument) {\n  return function () {\n    var editable = new _editableelement2.default('figcaption', { contenteditable: true });\n    editable.document = viewDocument;\n    editable.setCustomProperty(captionSymbol, true);\n\n    editable.on('change:isFocused', function (evt, property, is) {\n      if (is) {\n        editable.addClass('focused');\n      } else {\n        editable.removeClass('focused');\n      }\n    });\n\n    return editable;\n  };\n}\n\n/**\n * Returns `true` if given view element is image's caption editable.\n *\n * @param {module:engine/view/element~Element} viewElement\n * @return {Boolean}\n */\nfunction isCaption(viewElement) {\n  return !!viewElement.getCustomProperty(captionSymbol);\n}\n\n/**\n * Returns caption's model element from given image element. Returns `null` if no caption is found.\n *\n * @param {module:engine/model/element~Element} imageModelElement\n * @return {module:engine/model/element~Element|null}\n */\nfunction getCaptionFromImage(imageModelElement) {\n  var _iteratorNormalCompletion = true;\n  var _didIteratorError = false;\n  var _iteratorError = undefined;\n\n  try {\n    for (var _iterator = imageModelElement.getChildren()[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n      var node = _step.value;\n\n      if (node instanceof _element2.default && node.name == 'caption') {\n        return node;\n      }\n    }\n  } catch (err) {\n    _didIteratorError = true;\n    _iteratorError = err;\n  } finally {\n    try {\n      if (!_iteratorNormalCompletion && _iterator.return) {\n        _iterator.return();\n      }\n    } finally {\n      if (_didIteratorError) {\n        throw _iteratorError;\n      }\n    }\n  }\n\n  return null;\n}\n\n/***/ }),\n/* 339 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _plugin = __webpack_require__(2);\n\nvar _plugin2 = _interopRequireDefault(_plugin);\n\nvar _imagestyleengine = __webpack_require__(342);\n\nvar _imagestyleengine2 = _interopRequireDefault(_imagestyleengine);\n\nvar _buttonview = __webpack_require__(25);\n\nvar _buttonview2 = _interopRequireDefault(_buttonview);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module image/imagestyle\n */\n\n/**\n * The image style plugin.\n *\n * Uses {@link module:image/imagestyle/imagestyleengine~ImageStyleEngine}.\n *\n * @extends module:core/plugin~Plugin\n */\nvar ImageStyle = function (_Plugin) {\n\t_inherits(ImageStyle, _Plugin);\n\n\tfunction ImageStyle() {\n\t\t_classCallCheck(this, ImageStyle);\n\n\t\treturn _possibleConstructorReturn(this, (ImageStyle.__proto__ || Object.getPrototypeOf(ImageStyle)).apply(this, arguments));\n\t}\n\n\t_createClass(ImageStyle, [{\n\t\tkey: 'init',\n\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tvalue: function init() {\n\t\t\tvar styles = this.editor.config.get('image.styles');\n\n\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\tvar _didIteratorError = false;\n\t\t\tvar _iteratorError = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator = styles[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\tvar style = _step.value;\n\n\t\t\t\t\tthis._createButton(style);\n\t\t\t\t}\n\n\t\t\t\t// Push buttons to default image toolbar if one exists.\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError = true;\n\t\t\t\t_iteratorError = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tvar defaultImageToolbarConfig = this.editor.config.get('image.defaultToolbar');\n\n\t\t\tif (defaultImageToolbarConfig) {\n\t\t\t\tif (defaultImageToolbarConfig.length) {\n\t\t\t\t\tdefaultImageToolbarConfig.push('|');\n\t\t\t\t}\n\n\t\t\t\tstyles.forEach(function (style) {\n\t\t\t\t\treturn defaultImageToolbarConfig.push(style.name);\n\t\t\t\t});\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Creates button for each style and stores it in editor's {@link module:ui/componentfactory~ComponentFactory ComponentFactory}.\n   *\n   * @private\n   * @param {module:image/imagestyle/imagestyleengine~ImageStyleFormat} style\n   */\n\n\t}, {\n\t\tkey: '_createButton',\n\t\tvalue: function _createButton(style) {\n\t\t\tvar _this2 = this;\n\n\t\t\tvar editor = this.editor;\n\t\t\tvar command = editor.commands.get(style.name);\n\n\t\t\teditor.ui.componentFactory.add(style.name, function (locale) {\n\t\t\t\tvar view = new _buttonview2.default(locale);\n\n\t\t\t\tview.set({\n\t\t\t\t\tlabel: style.title,\n\t\t\t\t\ticon: style.icon,\n\t\t\t\t\ttooltip: true\n\t\t\t\t});\n\n\t\t\t\tview.bind('isEnabled').to(command, 'isEnabled');\n\t\t\t\tview.bind('isOn').to(command, 'value');\n\n\t\t\t\t_this2.listenTo(view, 'execute', function () {\n\t\t\t\t\treturn editor.execute(style.name);\n\t\t\t\t});\n\n\t\t\t\treturn view;\n\t\t\t});\n\t\t}\n\t}], [{\n\t\tkey: 'requires',\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tget: function get() {\n\t\t\treturn [_imagestyleengine2.default];\n\t\t}\n\t}]);\n\n\treturn ImageStyle;\n}(_plugin2.default);\n\nexports.default = ImageStyle;\n\n/***/ }),\n/* 340 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\nexports.modelToViewStyleAttribute = modelToViewStyleAttribute;\nexports.viewToModelStyleAttribute = viewToModelStyleAttribute;\n\nvar _utils = __webpack_require__(40);\n\nfunction _toConsumableArray(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } else { return Array.from(arr); } } /**\n                                                                                                                                                                                                     * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                     * For licensing, see LICENSE.md.\n                                                                                                                                                                                                     */\n\n/**\n * @module image/imagestyle/converters\n */\n\n/**\n * Returns converter for the `imageStyle` attribute. It can be used for adding, changing and removing the attribute.\n *\n * @param {Object} styles Object containing available styles. See {@link module:image/imagestyle/imagestyleengine~ImageStyleFormat}\n * for more details.\n * @returns {Function} Model to view attribute converter.\n */\nfunction modelToViewStyleAttribute(styles) {\n\treturn function (evt, data, consumable, conversionApi) {\n\t\tvar eventType = evt.name.split(':')[0];\n\t\tvar consumableType = eventType + ':imageStyle';\n\n\t\tif (!consumable.test(data.item, consumableType)) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Check if there is class name associated with given value.\n\t\tvar newStyle = getStyleByValue(data.attributeNewValue, styles);\n\t\tvar oldStyle = getStyleByValue(data.attributeOldValue, styles);\n\t\tvar viewElement = conversionApi.mapper.toViewElement(data.item);\n\n\t\tif (handleRemoval(eventType, oldStyle, viewElement) || handleAddition(eventType, newStyle, viewElement)) {\n\t\t\tconsumable.consume(data.item, consumableType);\n\t\t}\n\t};\n}\n\n/**\n * Returns view to model converter converting image CSS classes to proper value in the model.\n *\n * @param {Array.<module:image/imagestyle/imagestyleengine~ImageStyleFormat>} styles Styles for which converter is created.\n * @returns {Function} View to model converter.\n */\nfunction viewToModelStyleAttribute(styles) {\n\t// Convert only styles without `null` value.\n\tvar filteredStyles = styles.filter(function (style) {\n\t\treturn style.value !== null;\n\t});\n\n\treturn function (evt, data, consumable, conversionApi) {\n\t\tvar _iteratorNormalCompletion = true;\n\t\tvar _didIteratorError = false;\n\t\tvar _iteratorError = undefined;\n\n\t\ttry {\n\t\t\tfor (var _iterator = filteredStyles[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\tvar style = _step.value;\n\n\t\t\t\tviewToModelImageStyle(style, data, consumable, conversionApi);\n\t\t\t}\n\t\t} catch (err) {\n\t\t\t_didIteratorError = true;\n\t\t\t_iteratorError = err;\n\t\t} finally {\n\t\t\ttry {\n\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t_iterator.return();\n\t\t\t\t}\n\t\t\t} finally {\n\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t};\n}\n\n// Converter from view to model converting single style.\n// For more information see {@link module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher};\n//\n// @param {module:image/imagestyle/imagestyleengine~ImageStyleFormat} style\n// @param {Object} data\n// @param {module:engine/conversion/viewconsumable~ViewConsumable} consumable\n// @param {Object} conversionApi\nfunction viewToModelImageStyle(style, data, consumable, conversionApi) {\n\tvar viewFigureElement = data.input;\n\tvar modelImageElement = data.output;\n\n\t// *** Step 1: Validate conversion.\n\t// Check if view element has proper class to consume.\n\tif (!consumable.test(viewFigureElement, { class: style.className })) {\n\t\treturn;\n\t}\n\n\t// Check if figure is converted to image.\n\tif (!(0, _utils.isImage)(modelImageElement)) {\n\t\treturn;\n\t}\n\n\t// Check if image element can be placed in current context wit additional attribute.\n\tvar attributes = [].concat(_toConsumableArray(modelImageElement.getAttributeKeys()), ['imageStyle']);\n\n\tif (!conversionApi.schema.check({ name: 'image', inside: data.context, attributes: attributes })) {\n\t\treturn;\n\t}\n\n\t// *** Step2: Convert to model.\n\tconsumable.consume(viewFigureElement, { class: style.className });\n\tmodelImageElement.setAttribute('imageStyle', style.value);\n}\n\n// Returns style with given `value` from array of styles.\n//\n// @param {String} value\n// @param {Array.<module:image/imagestyle/imagestyleengine~ImageStyleFormat> } styles\n// @return {module:image/imagestyle/imagestyleengine~ImageStyleFormat|undefined}\nfunction getStyleByValue(value, styles) {\n\tvar _iteratorNormalCompletion2 = true;\n\tvar _didIteratorError2 = false;\n\tvar _iteratorError2 = undefined;\n\n\ttry {\n\t\tfor (var _iterator2 = styles[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {\n\t\t\tvar style = _step2.value;\n\n\t\t\tif (style.value === value) {\n\t\t\t\treturn style;\n\t\t\t}\n\t\t}\n\t} catch (err) {\n\t\t_didIteratorError2 = true;\n\t\t_iteratorError2 = err;\n\t} finally {\n\t\ttry {\n\t\t\tif (!_iteratorNormalCompletion2 && _iterator2.return) {\n\t\t\t\t_iterator2.return();\n\t\t\t}\n\t\t} finally {\n\t\t\tif (_didIteratorError2) {\n\t\t\t\tthrow _iteratorError2;\n\t\t\t}\n\t\t}\n\t}\n}\n\n// Handles converting removal of the attribute.\n// Returns `true` when handling was processed correctly and further conversion can be performed.\n//\n// @param {String} eventType Type of the event.\n// @param {module:image/imagestyle/imagestyleengine~ImageStyleFormat} style\n// @param {module:engine/view/element~Element} viewElement\n// @returns {Boolean} Whether the change was handled.\nfunction handleRemoval(eventType, style, viewElement) {\n\tif (style && (eventType == 'changeAttribute' || eventType == 'removeAttribute')) {\n\t\tviewElement.removeClass(style.className);\n\n\t\treturn true;\n\t}\n\n\treturn false;\n}\n\n// Handles converting addition of the attribute.\n// Returns `true` when handling was processed correctly and further conversion can be performed.\n//\n// @param {String} eventType Type of the event.\n// @param {module:image/imagestyle/imagestyleengine~ImageStyleFormat} style\n// @param {module:engine/view/element~Element} viewElement\n// @returns {Boolean} Whether the change was handled.\nfunction handleAddition(evenType, style, viewElement) {\n\tif (style && (evenType == 'addAttribute' || evenType == 'changeAttribute')) {\n\t\tviewElement.addClass(style.className);\n\n\t\treturn true;\n\t}\n\n\treturn false;\n}\n\n/***/ }),\n/* 341 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _command = __webpack_require__(15);\n\nvar _command2 = _interopRequireDefault(_command);\n\nvar _utils = __webpack_require__(40);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module image/imagestyle/imagestylecommand\n */\n\n/**\n * The image style command. It is used to apply different image styles.\n *\n * @extends module:core/command/command~Command\n */\nvar ImageStyleCommand = function (_Command) {\n\t_inherits(ImageStyleCommand, _Command);\n\n\t/**\n  * Creates instance of the image style command. Each command instance is handling one style.\n  *\n  * @param {module:core/editor/editor~Editor} editor Editor instance.\n  * @param {module:image/imagestyle/imagestyleengine~ImageStyleFormat} styles Style to apply by this command.\n  */\n\tfunction ImageStyleCommand(editor, style) {\n\t\t_classCallCheck(this, ImageStyleCommand);\n\n\t\t/**\n   * The current command value - `true` if style handled by the command is applied on currently selected image,\n   * `false` otherwise.\n   *\n   * @readonly\n   * @observable\n   * @member {Boolean} #value\n   */\n\t\tvar _this = _possibleConstructorReturn(this, (ImageStyleCommand.__proto__ || Object.getPrototypeOf(ImageStyleCommand)).call(this, editor));\n\n\t\t_this.set('value', false);\n\n\t\t/**\n   * Style handled by this command.\n   *\n   * @readonly\n   * @member {module:image/imagestyle/imagestyleengine~ImageStyleFormat} #style\n   */\n\t\t_this.style = style;\n\n\t\t// Update current value and refresh state each time something change in model document.\n\t\t_this.listenTo(editor.document, 'changesDone', function () {\n\t\t\t_this._updateValue();\n\t\t\t_this.refreshState();\n\t\t});\n\t\treturn _this;\n\t}\n\n\t/**\n  * Updates command's value.\n  *\n  * @private\n  */\n\n\n\t_createClass(ImageStyleCommand, [{\n\t\tkey: '_updateValue',\n\t\tvalue: function _updateValue() {\n\t\t\tvar doc = this.editor.document;\n\t\t\tvar element = doc.selection.getSelectedElement();\n\n\t\t\tif (!element) {\n\t\t\t\tthis.value = false;\n\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tif (this.style.value === null) {\n\t\t\t\tthis.value = !element.hasAttribute('imageStyle');\n\t\t\t} else {\n\t\t\t\tthis.value = element.getAttribute('imageStyle') == this.style.value;\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: '_checkEnabled',\n\t\tvalue: function _checkEnabled() {\n\t\t\tvar element = this.editor.document.selection.getSelectedElement();\n\n\t\t\treturn (0, _utils.isImage)(element);\n\t\t}\n\n\t\t/**\n   * Executes command.\n   *\n   * @protected\n   * @param {Object} options\n   * @param {module:engine/model/batch~Batch} [options.batch] Batch to collect all the change steps. New batch will be\n   * created if this option is not set.\n   */\n\n\t}, {\n\t\tkey: '_doExecute',\n\t\tvalue: function _doExecute() {\n\t\t\tvar _this2 = this;\n\n\t\t\tvar options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n\n\t\t\t// Stop if style is already applied.\n\t\t\tif (this.value) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tvar editor = this.editor;\n\t\t\tvar doc = editor.document;\n\t\t\tvar selection = doc.selection;\n\t\t\tvar imageElement = selection.getSelectedElement();\n\n\t\t\tdoc.enqueueChanges(function () {\n\t\t\t\tvar batch = options.batch || doc.batch();\n\n\t\t\t\tbatch.setAttribute(imageElement, 'imageStyle', _this2.style.value);\n\t\t\t});\n\t\t}\n\t}]);\n\n\treturn ImageStyleCommand;\n}(_command2.default);\n\nexports.default = ImageStyleCommand;\n\n/***/ }),\n/* 342 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _plugin = __webpack_require__(2);\n\nvar _plugin2 = _interopRequireDefault(_plugin);\n\nvar _imagestylecommand = __webpack_require__(341);\n\nvar _imagestylecommand2 = _interopRequireDefault(_imagestylecommand);\n\nvar _imageengine = __webpack_require__(173);\n\nvar _imageengine2 = _interopRequireDefault(_imageengine);\n\nvar _converters = __webpack_require__(340);\n\nvar _objectCenter = __webpack_require__(513);\n\nvar _objectCenter2 = _interopRequireDefault(_objectCenter);\n\nvar _objectRight = __webpack_require__(514);\n\nvar _objectRight2 = _interopRequireDefault(_objectRight);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module image/imagestyle/imagestyleengine\n */\n\n/**\n * The image style engine plugin. Sets default configuration, creates converters and registers\n * {@link module:image/imagestyle/imagestylecommand~ImageStyleCommand ImageStyleCommand}.\n *\n * @extends {module:core/plugin~Plugin}\n */\nvar ImageStyleEngine = function (_Plugin) {\n\t_inherits(ImageStyleEngine, _Plugin);\n\n\tfunction ImageStyleEngine() {\n\t\t_classCallCheck(this, ImageStyleEngine);\n\n\t\treturn _possibleConstructorReturn(this, (ImageStyleEngine.__proto__ || Object.getPrototypeOf(ImageStyleEngine)).apply(this, arguments));\n\t}\n\n\t_createClass(ImageStyleEngine, [{\n\t\tkey: 'init',\n\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tvalue: function init() {\n\t\t\tvar editor = this.editor;\n\t\t\tvar t = editor.t;\n\t\t\tvar doc = editor.document;\n\t\t\tvar schema = doc.schema;\n\t\t\tvar data = editor.data;\n\t\t\tvar editing = editor.editing;\n\n\t\t\t// Define default configuration.\n\t\t\teditor.config.define('image.styles', [\n\t\t\t// This option is equal to situation when no style is applied.\n\t\t\t{ name: 'imageStyleFull', title: t('Full size image'), icon: _objectCenter2.default, value: null },\n\n\t\t\t// This represents side image.\n\t\t\t{ name: 'imageStyleSide', title: t('Side image'), icon: _objectRight2.default, value: 'side', className: 'image-style-side' }]);\n\n\t\t\t// Get configuration.\n\t\t\tvar styles = editor.config.get('image.styles');\n\n\t\t\t// Allow imageStyle attribute in image.\n\t\t\t// We could call it 'style' but https://github.com/ckeditor/ckeditor5-engine/issues/559.\n\t\t\tschema.allow({ name: 'image', attributes: 'imageStyle', inside: '$root' });\n\n\t\t\t// Converters for imageStyle attribute from model to view.\n\t\t\tvar modelToViewConverter = (0, _converters.modelToViewStyleAttribute)(styles);\n\t\t\tediting.modelToView.on('addAttribute:imageStyle:image', modelToViewConverter);\n\t\t\tdata.modelToView.on('addAttribute:imageStyle:image', modelToViewConverter);\n\t\t\tediting.modelToView.on('changeAttribute:imageStyle:image', modelToViewConverter);\n\t\t\tdata.modelToView.on('changeAttribute:imageStyle:image', modelToViewConverter);\n\t\t\tediting.modelToView.on('removeAttribute:imageStyle:image', modelToViewConverter);\n\t\t\tdata.modelToView.on('removeAttribute:imageStyle:image', modelToViewConverter);\n\n\t\t\t// Converter for figure element from view to model.\n\t\t\tdata.viewToModel.on('element:figure', (0, _converters.viewToModelStyleAttribute)(styles), { priority: 'low' });\n\n\t\t\t// Register separate command for each style.\n\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\tvar _didIteratorError = false;\n\t\t\tvar _iteratorError = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator = styles[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\tvar style = _step.value;\n\n\t\t\t\t\teditor.commands.set(style.name, new _imagestylecommand2.default(editor, style));\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError = true;\n\t\t\t\t_iteratorError = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}], [{\n\t\tkey: 'requires',\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tget: function get() {\n\t\t\treturn [_imageengine2.default];\n\t\t}\n\t}]);\n\n\treturn ImageStyleEngine;\n}(_plugin2.default);\n\n/**\n * Image style format descriptor.\n *\n *\timport fullIcon from 'path/to/icon.svg`;\n *\n *\tconst imageStyleFormat = {\n *\t\tname: 'fullSizeImage',\n *\t\tvalue: 'full',\n *\t\ticon: fullIcon,\n *\t\ttitle: `Full size image`,\n *\t\tclass: `image-full-size`\n *\t}\n *\n * @typedef {Object} module:image/imagestyle/imagestyleengine~ImageStyleFormat\n * @property {String} name Name of the style. It will be used to:\n * * register {@link module:core/command/command~Command command} which will apply this style,\n * * store style's button in editor's {@link module:ui/componentfactory~ComponentFactory ComponentFactory}.\n * @property {String} value Value used to store this style in model attribute.\n * When value is `null` style will be used as default one. Default style does not apply any CSS class to the view element.\n * @property {String} icon SVG icon representation to use when creating style's button.\n * @property {String} title Style's title.\n * @property {String} className CSS class used to represent style in view.\n */\n\n\nexports.default = ImageStyleEngine;\n\n/***/ }),\n/* 343 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _plugin = __webpack_require__(2);\n\nvar _plugin2 = _interopRequireDefault(_plugin);\n\nvar _buttonview = __webpack_require__(25);\n\nvar _buttonview2 = _interopRequireDefault(_buttonview);\n\nvar _imagetextalternativeengine = __webpack_require__(345);\n\nvar _imagetextalternativeengine2 = _interopRequireDefault(_imagetextalternativeengine);\n\nvar _escpresshandler = __webpack_require__(366);\n\nvar _escpresshandler2 = _interopRequireDefault(_escpresshandler);\n\nvar _clickoutsidehandler = __webpack_require__(184);\n\nvar _clickoutsidehandler2 = _interopRequireDefault(_clickoutsidehandler);\n\nvar _imagetoolbar = __webpack_require__(175);\n\nvar _imagetoolbar2 = _interopRequireDefault(_imagetoolbar);\n\nvar _textalternativeformview = __webpack_require__(346);\n\nvar _textalternativeformview2 = _interopRequireDefault(_textalternativeformview);\n\nvar _imageballoonpanelview = __webpack_require__(174);\n\nvar _imageballoonpanelview2 = _interopRequireDefault(_imageballoonpanelview);\n\nvar _lowVision = __webpack_require__(512);\n\nvar _lowVision2 = _interopRequireDefault(_lowVision);\n\n__webpack_require__(523);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module image/imagetextalternative\n */\n\n/**\n * The image text alternative plugin.\n *\n * @extends module:core/plugin~Plugin\n */\nvar ImageTextAlternative = function (_Plugin) {\n\t_inherits(ImageTextAlternative, _Plugin);\n\n\tfunction ImageTextAlternative() {\n\t\t_classCallCheck(this, ImageTextAlternative);\n\n\t\treturn _possibleConstructorReturn(this, (ImageTextAlternative.__proto__ || Object.getPrototypeOf(ImageTextAlternative)).apply(this, arguments));\n\t}\n\n\t_createClass(ImageTextAlternative, [{\n\t\tkey: 'init',\n\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tvalue: function init() {\n\t\t\tvar _this2 = this;\n\n\t\t\tthis._createButton();\n\n\t\t\t// Push button to default image toolbar if the image toolbar was loaded.\n\t\t\tvar defaultImageToolbarConfig = this.editor.config.get('image.defaultToolbar');\n\n\t\t\tif (defaultImageToolbarConfig) {\n\t\t\t\tif (defaultImageToolbarConfig.length) {\n\t\t\t\t\tdefaultImageToolbarConfig.push('|');\n\t\t\t\t}\n\n\t\t\t\tdefaultImageToolbarConfig.push('imageTextAlternative');\n\t\t\t}\n\n\t\t\treturn this._createBalloonPanel().then(function (panel) {\n\t\t\t\t/**\n     * Balloon panel containing text alternative change form.\n     *\n     * @member {module:image/ui/imageballoonpanel~ImageBalloonPanelView} #baloonPanel\n     */\n\t\t\t\t_this2.balloonPanel = panel;\n\n\t\t\t\t/**\n     * Form containing textarea and buttons, used to change `alt` text value.\n     *\n     * @member {module:image/imagetextalternative/ui/textalternativeformview~TextAlternativeFormView} #form\n     */\n\t\t\t\t_this2.form = panel.content.get(0);\n\t\t\t});\n\t\t}\n\n\t\t/**\n   * Creates button showing text alternative change balloon panel and registers it in\n   * editor's {@link module:ui/componentfactory~ComponentFactory ComponentFactory}.\n   *\n   * @private\n   */\n\n\t}, {\n\t\tkey: '_createButton',\n\t\tvalue: function _createButton() {\n\t\t\tvar _this3 = this;\n\n\t\t\tvar editor = this.editor;\n\t\t\tvar command = editor.commands.get('imageTextAlternative');\n\t\t\tvar t = editor.t;\n\n\t\t\teditor.ui.componentFactory.add('imageTextAlternative', function (locale) {\n\t\t\t\tvar view = new _buttonview2.default(locale);\n\n\t\t\t\tview.set({\n\t\t\t\t\tlabel: t('Change image text alternative'),\n\t\t\t\t\ticon: _lowVision2.default,\n\t\t\t\t\ttooltip: true\n\t\t\t\t});\n\n\t\t\t\tview.bind('isEnabled').to(command, 'isEnabled');\n\n\t\t\t\t_this3.listenTo(view, 'execute', function () {\n\t\t\t\t\treturn _this3._showBalloonPanel();\n\t\t\t\t});\n\n\t\t\t\treturn view;\n\t\t\t});\n\t\t}\n\n\t\t/**\n   * Creates balloon panel.\n   *\n   * @private\n   * @return {Promise.<module:image/image/ui/imageballoonpanel~ImageBalloonPanelView>}\n   */\n\n\t}, {\n\t\tkey: '_createBalloonPanel',\n\t\tvalue: function _createBalloonPanel() {\n\t\t\tvar _this4 = this;\n\n\t\t\tvar editor = this.editor;\n\n\t\t\tvar panel = new _imageballoonpanelview2.default(editor);\n\t\t\tvar form = new _textalternativeformview2.default(editor.locale);\n\n\t\t\tthis.listenTo(form, 'submit', function () {\n\t\t\t\teditor.execute('imageTextAlternative', { newValue: form.lebeledInput.inputView.element.value });\n\t\t\t\t_this4._hideBalloonPanel();\n\t\t\t});\n\n\t\t\t// If image toolbar is present - hide it when text alternative balloon is visible.\n\t\t\tvar imageToolbar = editor.plugins.get(_imagetoolbar2.default);\n\n\t\t\tif (imageToolbar) {\n\t\t\t\tthis.listenTo(panel, 'change:isVisible', function () {\n\t\t\t\t\tif (panel.isVisible) {\n\t\t\t\t\t\timageToolbar.hide();\n\t\t\t\t\t\timageToolbar.isEnabled = false;\n\t\t\t\t\t} else {\n\t\t\t\t\t\timageToolbar.show();\n\t\t\t\t\t\timageToolbar.isEnabled = true;\n\t\t\t\t\t}\n\t\t\t\t});\n\t\t\t}\n\n\t\t\tthis.listenTo(form, 'cancel', function () {\n\t\t\t\treturn _this4._hideBalloonPanel();\n\t\t\t});\n\n\t\t\t// Close on `ESC` press.\n\t\t\t(0, _escpresshandler2.default)({\n\t\t\t\temitter: panel,\n\t\t\t\tactivator: function activator() {\n\t\t\t\t\treturn panel.isVisible;\n\t\t\t\t},\n\t\t\t\tcallback: function callback() {\n\t\t\t\t\treturn _this4._hideBalloonPanel();\n\t\t\t\t}\n\t\t\t});\n\n\t\t\t// Close on click outside of balloon panel element.\n\t\t\t(0, _clickoutsidehandler2.default)({\n\t\t\t\temitter: panel,\n\t\t\t\tactivator: function activator() {\n\t\t\t\t\treturn panel.isVisible;\n\t\t\t\t},\n\t\t\t\tcontextElement: panel.element,\n\t\t\t\tcallback: function callback() {\n\t\t\t\t\treturn _this4._hideBalloonPanel();\n\t\t\t\t}\n\t\t\t});\n\n\t\t\treturn Promise.all([panel.content.add(form), editor.ui.view.body.add(panel)]).then(function () {\n\t\t\t\treturn panel;\n\t\t\t});\n\t\t}\n\n\t\t/**\n   * Shows the balloon panel.\n   *\n   * @private\n   */\n\n\t}, {\n\t\tkey: '_showBalloonPanel',\n\t\tvalue: function _showBalloonPanel() {\n\t\t\tvar editor = this.editor;\n\t\t\tvar command = editor.commands.get('imageTextAlternative');\n\t\t\tthis.form.lebeledInput.value = command.value || '';\n\t\t\tthis.balloonPanel.attach();\n\t\t\tthis.form.lebeledInput.select();\n\t\t}\n\n\t\t/**\n   * Hides the balloon panel.\n   *\n   * @private\n   */\n\n\t}, {\n\t\tkey: '_hideBalloonPanel',\n\t\tvalue: function _hideBalloonPanel() {\n\t\t\tvar editor = this.editor;\n\t\t\tthis.balloonPanel.detach();\n\t\t\teditor.editing.view.focus();\n\t\t}\n\t}], [{\n\t\tkey: 'requires',\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tget: function get() {\n\t\t\treturn [_imagetextalternativeengine2.default];\n\t\t}\n\t}]);\n\n\treturn ImageTextAlternative;\n}(_plugin2.default);\n\nexports.default = ImageTextAlternative;\n\n/***/ }),\n/* 344 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _command = __webpack_require__(15);\n\nvar _command2 = _interopRequireDefault(_command);\n\nvar _utils = __webpack_require__(40);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module image/imagelaternatetext/imagetextalternativecommand\n */\n\n/**\n * The image text alternative command. It is used to change `alt` attribute on `image` elements.\n *\n * @extends module:core/command/command~Command\n */\nvar ImageTextAlternativeCommand = function (_Command) {\n\t_inherits(ImageTextAlternativeCommand, _Command);\n\n\t/**\n  * @inheritDoc\n  */\n\tfunction ImageTextAlternativeCommand(editor) {\n\t\t_classCallCheck(this, ImageTextAlternativeCommand);\n\n\t\t/**\n   * The current command value - `false` if there is no `alt` attribute, otherwise contains string with `alt`\n   * attribute value.\n   *\n   * @readonly\n   * @observable\n   * @member {String|Boolean} #value\n   */\n\t\tvar _this = _possibleConstructorReturn(this, (ImageTextAlternativeCommand.__proto__ || Object.getPrototypeOf(ImageTextAlternativeCommand)).call(this, editor));\n\n\t\t_this.set('value', false);\n\n\t\t// Update current value and refresh state each time something change in model document.\n\t\t_this.listenTo(editor.document, 'changesDone', function () {\n\t\t\t_this._updateValue();\n\t\t\t_this.refreshState();\n\t\t});\n\t\treturn _this;\n\t}\n\n\t/**\n  * Updates command's value.\n  *\n  * @private\n  */\n\n\n\t_createClass(ImageTextAlternativeCommand, [{\n\t\tkey: '_updateValue',\n\t\tvalue: function _updateValue() {\n\t\t\tvar doc = this.editor.document;\n\t\t\tvar element = doc.selection.getSelectedElement();\n\n\t\t\tif ((0, _utils.isImage)(element) && element.hasAttribute('alt')) {\n\t\t\t\tthis.value = element.getAttribute('alt');\n\t\t\t} else {\n\t\t\t\tthis.value = false;\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: '_checkEnabled',\n\t\tvalue: function _checkEnabled() {\n\t\t\tvar element = this.editor.document.selection.getSelectedElement();\n\n\t\t\treturn (0, _utils.isImage)(element);\n\t\t}\n\n\t\t/**\n   * Executes command.\n   *\n   * @protected\n   * @param {Object} options\n   * @param {String} options.newValue New value of `alt` attribute to set.\n   * @param {module:engine/model/batch~Batch} [options.batch] Batch to collect all the change steps. New batch will be\n   * created if this option is not set.\n   */\n\n\t}, {\n\t\tkey: '_doExecute',\n\t\tvalue: function _doExecute(options) {\n\t\t\tvar editor = this.editor;\n\t\t\tvar doc = editor.document;\n\t\t\tvar imageElement = doc.selection.getSelectedElement();\n\n\t\t\tdoc.enqueueChanges(function () {\n\t\t\t\tvar batch = options.batch || doc.batch();\n\n\t\t\t\tbatch.setAttribute(imageElement, 'alt', options.newValue);\n\t\t\t});\n\t\t}\n\t}]);\n\n\treturn ImageTextAlternativeCommand;\n}(_command2.default);\n\nexports.default = ImageTextAlternativeCommand;\n\n/***/ }),\n/* 345 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _imagetextalternativecommand = __webpack_require__(344);\n\nvar _imagetextalternativecommand2 = _interopRequireDefault(_imagetextalternativecommand);\n\nvar _plugin = __webpack_require__(2);\n\nvar _plugin2 = _interopRequireDefault(_plugin);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module image/imagetextalternative/imagetextalternativeengine\n */\n\n/**\n * The ImageTextAlternativeEngine plugin.\n * Registers `imageTextAlternative` command.\n *\n * @extends module:core/plugin~Plugin\n */\nvar ImageTextAlternativeEngine = function (_Plugin) {\n  _inherits(ImageTextAlternativeEngine, _Plugin);\n\n  function ImageTextAlternativeEngine() {\n    _classCallCheck(this, ImageTextAlternativeEngine);\n\n    return _possibleConstructorReturn(this, (ImageTextAlternativeEngine.__proto__ || Object.getPrototypeOf(ImageTextAlternativeEngine)).apply(this, arguments));\n  }\n\n  _createClass(ImageTextAlternativeEngine, [{\n    key: 'init',\n\n    /**\n     * @inheritDoc\n     */\n    value: function init() {\n      this.editor.commands.set('imageTextAlternative', new _imagetextalternativecommand2.default(this.editor));\n    }\n  }]);\n\n  return ImageTextAlternativeEngine;\n}(_plugin2.default);\n\nexports.default = ImageTextAlternativeEngine;\n\n/***/ }),\n/* 346 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _view = __webpack_require__(7);\n\nvar _view2 = _interopRequireDefault(_view);\n\nvar _buttonview = __webpack_require__(25);\n\nvar _buttonview2 = _interopRequireDefault(_buttonview);\n\nvar _template = __webpack_require__(6);\n\nvar _template2 = _interopRequireDefault(_template);\n\nvar _labeledinputview = __webpack_require__(187);\n\nvar _labeledinputview2 = _interopRequireDefault(_labeledinputview);\n\nvar _inputtextview = __webpack_require__(186);\n\nvar _inputtextview2 = _interopRequireDefault(_inputtextview);\n\nvar _submithandler = __webpack_require__(185);\n\nvar _submithandler2 = _interopRequireDefault(_submithandler);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module image/imagetextalternative/ui/imagetextalternativeformview\n */\n\n/**\n * TextAlternativeFormView class.\n *\n * @extends module:ui/view~View\n */\nvar TextAlternativeFormView = function (_View) {\n\t_inherits(TextAlternativeFormView, _View);\n\n\t/**\n  * @inheritDoc\n  */\n\tfunction TextAlternativeFormView(locale) {\n\t\t_classCallCheck(this, TextAlternativeFormView);\n\n\t\tvar _this = _possibleConstructorReturn(this, (TextAlternativeFormView.__proto__ || Object.getPrototypeOf(TextAlternativeFormView)).call(this, locale));\n\n\t\tvar t = _this.locale.t;\n\n\t\t/**\n   * Text area with label.\n   *\n   * @member {module:ui/labeledinput/labeledinputview~LabeledInputView} #labeledTextarea\n   */\n\t\t_this.lebeledInput = _this._createLabeledInputView();\n\n\t\t/**\n   * Button used to submit the form.\n   *\n   * @member {module:ui/button/buttonview~ButtonView} #saveButtonView\n   */\n\t\t_this.saveButtonView = _this._createButton(t('Save'));\n\t\t_this.saveButtonView.type = 'submit';\n\n\t\t/**\n   * Button used to cancel the form.\n   *\n   * @member {module:ui/button/buttonview~ButtonView} #cancelButtonView\n   */\n\t\t_this.cancelButtonView = _this._createButton(t('Cancel'), 'cancel');\n\n\t\t_template2.default.extend(_this.saveButtonView.template, {\n\t\t\tattributes: {\n\t\t\t\tclass: ['ck-button-action']\n\t\t\t}\n\t\t});\n\n\t\t_this.template = new _template2.default({\n\t\t\ttag: 'form',\n\n\t\t\tattributes: {\n\t\t\t\tclass: ['cke-text-alternative-form']\n\t\t\t},\n\n\t\t\tchildren: [_this.lebeledInput, {\n\t\t\t\ttag: 'div',\n\n\t\t\t\tattributes: {\n\t\t\t\t\tclass: ['cke-text-alternative-form__actions']\n\t\t\t\t},\n\n\t\t\t\tchildren: [_this.saveButtonView, _this.cancelButtonView]\n\t\t\t}]\n\t\t});\n\n\t\t(0, _submithandler2.default)({\n\t\t\tview: _this\n\t\t});\n\t\treturn _this;\n\t}\n\n\t/**\n  * Creates button view.\n  *\n  * @private\n  * @param {String} label Button label\n  * @param {String} [eventName] Event name which ButtonView#execute event will be delegated to.\n  * @returns {module:ui/button/buttonview~ButtonView} Button view instance.\n  */\n\n\n\t_createClass(TextAlternativeFormView, [{\n\t\tkey: '_createButton',\n\t\tvalue: function _createButton(label, eventName) {\n\t\t\tvar button = new _buttonview2.default(this.locale);\n\n\t\t\tbutton.label = label;\n\t\t\tbutton.withText = true;\n\n\t\t\tif (eventName) {\n\t\t\t\tbutton.delegate('execute').to(this, eventName);\n\t\t\t}\n\n\t\t\treturn button;\n\t\t}\n\n\t\t/**\n   * Creates input with label.\n   *\n   * @private\n   * @return {module:ui/labeledinput/labeledinputview~LabeledInputView}\n   */\n\n\t}, {\n\t\tkey: '_createLabeledInputView',\n\t\tvalue: function _createLabeledInputView() {\n\t\t\tvar t = this.locale.t;\n\t\t\tvar labeledInput = new _labeledinputview2.default(this.locale, _inputtextview2.default);\n\t\t\tlabeledInput.label = t('Text alternative');\n\n\t\t\treturn labeledInput;\n\t\t}\n\t}]);\n\n\treturn TextAlternativeFormView;\n}(_view2.default);\n\nexports.default = TextAlternativeFormView;\n\n/***/ }),\n/* 347 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; };\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _plugin = __webpack_require__(2);\n\nvar _plugin2 = _interopRequireDefault(_plugin);\n\nvar _widgetengine = __webpack_require__(176);\n\nvar _widgetengine2 = _interopRequireDefault(_widgetengine);\n\nvar _mouseobserver = __webpack_require__(325);\n\nvar _mouseobserver2 = _interopRequireDefault(_mouseobserver);\n\nvar _range = __webpack_require__(3);\n\nvar _range2 = _interopRequireDefault(_range);\n\nvar _selection = __webpack_require__(72);\n\nvar _selection2 = _interopRequireDefault(_selection);\n\nvar _element = __webpack_require__(5);\n\nvar _element2 = _interopRequireDefault(_element);\n\nvar _editableelement = __webpack_require__(73);\n\nvar _editableelement2 = _interopRequireDefault(_editableelement);\n\nvar _rooteditableelement = __webpack_require__(170);\n\nvar _rooteditableelement2 = _interopRequireDefault(_rooteditableelement);\n\nvar _utils = __webpack_require__(119);\n\nvar _keyboard = __webpack_require__(21);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module image/widget/widget\n */\n\n/**\n * The widget plugin.\n * Adds default {@link module:engine/view/document~Document#event:mousedown mousedown} handling on widget elements.\n *\n * @extends module:core/plugin~Plugin.\n */\nvar Widget = function (_Plugin) {\n\t_inherits(Widget, _Plugin);\n\n\tfunction Widget() {\n\t\t_classCallCheck(this, Widget);\n\n\t\treturn _possibleConstructorReturn(this, (Widget.__proto__ || Object.getPrototypeOf(Widget)).apply(this, arguments));\n\t}\n\n\t_createClass(Widget, [{\n\t\tkey: 'init',\n\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tvalue: function init() {\n\t\t\tvar _this2 = this;\n\n\t\t\tvar viewDocument = this.editor.editing.view;\n\n\t\t\t// If mouse down is pressed on widget - create selection over whole widget.\n\t\t\tviewDocument.addObserver(_mouseobserver2.default);\n\t\t\tthis.listenTo(viewDocument, 'mousedown', function () {\n\t\t\t\treturn _this2._onMousedown.apply(_this2, arguments);\n\t\t\t});\n\n\t\t\t// Handle custom keydown behaviour.\n\t\t\tthis.listenTo(viewDocument, 'keydown', function () {\n\t\t\t\treturn _this2._onKeydown.apply(_this2, arguments);\n\t\t\t}, { priority: 'high' });\n\t\t}\n\n\t\t/**\n   * Handles {@link module:engine/view/document~Document#event:mousedown mousedown} events on widget elements.\n   *\n   * @private\n   * @param {module:utils/eventinfo~EventInfo} eventInfo\n   * @param {module:engine/view/observer/domeventdata~DomEventData} domEventData\n   */\n\n\t}, {\n\t\tkey: '_onMousedown',\n\t\tvalue: function _onMousedown(eventInfo, domEventData) {\n\t\t\tvar _this3 = this;\n\n\t\t\tvar editor = this.editor;\n\t\t\tvar viewDocument = editor.editing.view;\n\t\t\tvar element = domEventData.target;\n\n\t\t\t// Do nothing if inside nested editable.\n\t\t\tif (isInsideNestedEditable(element)) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// If target is not a widget element - check if one of the ancestors is.\n\t\t\tif (!(0, _utils.isWidget)(element)) {\n\t\t\t\telement = element.findAncestor(_utils.isWidget);\n\n\t\t\t\tif (!element) {\n\t\t\t\t\treturn;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tdomEventData.preventDefault();\n\n\t\t\t// Focus editor if is not focused already.\n\t\t\tif (!viewDocument.isFocused) {\n\t\t\t\tviewDocument.focus();\n\t\t\t}\n\n\t\t\t// Create model selection over widget.\n\t\t\tvar modelElement = editor.editing.mapper.toModelElement(element);\n\n\t\t\teditor.document.enqueueChanges(function () {\n\t\t\t\t_this3._setSelectionOverElement(modelElement);\n\t\t\t});\n\t\t}\n\n\t\t/**\n   * Handles {@link module:engine/view/document~Document#event:keydown keydown} events.\n   *\n   * @private\n   * @param {module:utils/eventinfo~EventInfo} eventInfo\n   * @param {module:engine/view/observer/domeventdata~DomEventData} domEventData\n   */\n\n\t}, {\n\t\tkey: '_onKeydown',\n\t\tvalue: function _onKeydown(eventInfo, domEventData) {\n\t\t\tvar keyCode = domEventData.keyCode;\n\t\t\tvar isForward = keyCode == _keyboard.keyCodes.delete || keyCode == _keyboard.keyCodes.arrowdown || keyCode == _keyboard.keyCodes.arrowright;\n\n\t\t\t// Checks if delete/backspace or arrow keys were handled and then prevents default event behaviour and stops\n\t\t\t// event propagation.\n\t\t\tif (isDeleteKeyCode(keyCode) && this._handleDelete(isForward) || isArrowKeyCode(keyCode) && this._handleArrowKeys(isForward)) {\n\t\t\t\tdomEventData.preventDefault();\n\t\t\t\teventInfo.stop();\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Handles delete keys: backspace and delete.\n   *\n   * @private\n   * @param {Boolean} isForward Set to true if delete was performed in forward direction.\n   * @returns {Boolean|undefined} Returns `true` if keys were handled correctly.\n   */\n\n\t}, {\n\t\tkey: '_handleDelete',\n\t\tvalue: function _handleDelete(isForward) {\n\t\t\tvar _this4 = this;\n\n\t\t\tvar modelDocument = this.editor.document;\n\t\t\tvar modelSelection = modelDocument.selection;\n\n\t\t\t// Do nothing on non-collapsed selection.\n\t\t\tif (!modelSelection.isCollapsed) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tvar objectElement = this._getObjectElementNextToSelection(isForward);\n\n\t\t\tif (objectElement) {\n\t\t\t\tmodelDocument.enqueueChanges(function () {\n\t\t\t\t\t// Remove previous element if empty.\n\t\t\t\t\tvar previousNode = modelSelection.anchor.parent;\n\n\t\t\t\t\tif (previousNode.isEmpty) {\n\t\t\t\t\t\tvar batch = modelDocument.batch();\n\t\t\t\t\t\tbatch.remove(previousNode);\n\t\t\t\t\t}\n\n\t\t\t\t\t_this4._setSelectionOverElement(objectElement);\n\t\t\t\t});\n\n\t\t\t\treturn true;\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Handles arrow keys.\n   *\n   * @param {Boolean} isForward Set to true if arrow key should be handled in forward direction.\n   * @returns {Boolean|undefined} Returns `true` if keys were handled correctly.\n   */\n\n\t}, {\n\t\tkey: '_handleArrowKeys',\n\t\tvalue: function _handleArrowKeys(isForward) {\n\t\t\tvar _this5 = this;\n\n\t\t\tvar modelDocument = this.editor.document;\n\t\t\tvar schema = modelDocument.schema;\n\t\t\tvar modelSelection = modelDocument.selection;\n\t\t\tvar objectElement = modelSelection.getSelectedElement();\n\n\t\t\t// if object element is selected.\n\t\t\tif (objectElement && schema.objects.has(objectElement.name)) {\n\t\t\t\tvar _ret = function () {\n\t\t\t\t\tvar position = isForward ? modelSelection.getLastPosition() : modelSelection.getFirstPosition();\n\t\t\t\t\tvar newRange = modelDocument.getNearestSelectionRange(position, isForward ? 'forward' : 'backward');\n\n\t\t\t\t\tif (newRange) {\n\t\t\t\t\t\tmodelDocument.enqueueChanges(function () {\n\t\t\t\t\t\t\tmodelSelection.setRanges([newRange]);\n\t\t\t\t\t\t});\n\t\t\t\t\t}\n\n\t\t\t\t\treturn {\n\t\t\t\t\t\tv: true\n\t\t\t\t\t};\n\t\t\t\t}();\n\n\t\t\t\tif ((typeof _ret === 'undefined' ? 'undefined' : _typeof(_ret)) === \"object\") return _ret.v;\n\t\t\t}\n\n\t\t\t// If selection is next to object element.\n\t\t\t// Return if not collapsed.\n\t\t\tif (!modelSelection.isCollapsed) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tvar objectElement2 = this._getObjectElementNextToSelection(isForward);\n\n\t\t\tif (objectElement2 instanceof _element2.default && modelDocument.schema.objects.has(objectElement2.name)) {\n\t\t\t\tmodelDocument.enqueueChanges(function () {\n\t\t\t\t\t_this5._setSelectionOverElement(objectElement2);\n\t\t\t\t});\n\n\t\t\t\treturn true;\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Sets {@link module:engine/model/selection~Selection document's selection} over given element.\n   *\n   * @private\n   * @param {module:engine/model/element~Element} element\n   */\n\n\t}, {\n\t\tkey: '_setSelectionOverElement',\n\t\tvalue: function _setSelectionOverElement(element) {\n\t\t\tthis.editor.document.selection.setRanges([_range2.default.createOn(element)]);\n\t\t}\n\n\t\t/**\n   * Checks if {@link module:engine/model/element~Element element} placed next to the current\n   * {@link module:engine/model/selection~Selection model selection} exists and is marked in\n   * {@link module:engine/model/schema~Schema schema} as `object`.\n   *\n   * @private\n   * @param {Boolean} forward Direction of checking.\n   * @returns {module:engine/model/element~Element|null}\n   */\n\n\t}, {\n\t\tkey: '_getObjectElementNextToSelection',\n\t\tvalue: function _getObjectElementNextToSelection(forward) {\n\t\t\tvar modelDocument = this.editor.document;\n\t\t\tvar schema = modelDocument.schema;\n\t\t\tvar modelSelection = modelDocument.selection;\n\t\t\tvar dataController = this.editor.data;\n\n\t\t\t// Clone current selection to use it as a probe. We must leave default selection as it is so it can return\n\t\t\t// to its current state after undo.\n\t\t\tvar probe = _selection2.default.createFromSelection(modelSelection);\n\t\t\tdataController.modifySelection(probe, { direction: forward ? 'forward' : 'backward' });\n\t\t\tvar objectElement = forward ? probe.focus.nodeBefore : probe.focus.nodeAfter;\n\n\t\t\tif (objectElement instanceof _element2.default && schema.objects.has(objectElement.name)) {\n\t\t\t\treturn objectElement;\n\t\t\t}\n\n\t\t\treturn null;\n\t\t}\n\t}], [{\n\t\tkey: 'requires',\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tget: function get() {\n\t\t\treturn [_widgetengine2.default];\n\t\t}\n\t}]);\n\n\treturn Widget;\n}(_plugin2.default);\n\n// Returns 'true' if provided key code represents one of the arrow keys.\n//\n// @param {Number} keyCode\n// @returns {Boolean}\n\n\nexports.default = Widget;\nfunction isArrowKeyCode(keyCode) {\n\treturn keyCode == _keyboard.keyCodes.arrowright || keyCode == _keyboard.keyCodes.arrowleft || keyCode == _keyboard.keyCodes.arrowup || keyCode == _keyboard.keyCodes.arrowdown;\n}\n\n//Returns 'true' if provided key code represents one of the delete keys: delete or backspace.\n//\n//@param {Number} keyCode\n//@returns {Boolean}\nfunction isDeleteKeyCode(keyCode) {\n\treturn keyCode == _keyboard.keyCodes.delete || keyCode == _keyboard.keyCodes.backspace;\n}\n\n// Returns `true` when element is a nested editable or is placed inside one.\n//\n// @param {module:engine/view/element~Element}\n// @returns {Boolean}\nfunction isInsideNestedEditable(element) {\n\twhile (element) {\n\t\tif (element instanceof _editableelement2.default && !(element instanceof _rooteditableelement2.default)) {\n\t\t\treturn true;\n\t\t}\n\n\t\telement = element.parent;\n\t}\n\n\treturn false;\n}\n\n/***/ }),\n/* 348 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _plugin = __webpack_require__(2);\n\nvar _plugin2 = _interopRequireDefault(_plugin);\n\nvar _clickobserver = __webpack_require__(321);\n\nvar _clickobserver2 = _interopRequireDefault(_clickobserver);\n\nvar _linkengine = __webpack_require__(350);\n\nvar _linkengine2 = _interopRequireDefault(_linkengine);\n\nvar _linkelement = __webpack_require__(178);\n\nvar _linkelement2 = _interopRequireDefault(_linkelement);\n\nvar _clickoutsidehandler = __webpack_require__(184);\n\nvar _clickoutsidehandler2 = _interopRequireDefault(_clickoutsidehandler);\n\nvar _buttonview = __webpack_require__(25);\n\nvar _buttonview2 = _interopRequireDefault(_buttonview);\n\nvar _balloonpanelview = __webpack_require__(183);\n\nvar _balloonpanelview2 = _interopRequireDefault(_balloonpanelview);\n\nvar _linkformview = __webpack_require__(351);\n\nvar _linkformview2 = _interopRequireDefault(_linkformview);\n\nvar _link = __webpack_require__(515);\n\nvar _link2 = _interopRequireDefault(_link);\n\nvar _unlink = __webpack_require__(516);\n\nvar _unlink2 = _interopRequireDefault(_unlink);\n\n__webpack_require__(525);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module link/link\n */\n\n/**\n * The link feature. It introduces the Link and Unlink buttons and the <kbd>Ctrl+K</kbd> keystroke.\n *\n * It uses the {@link module:link/linkengine~LinkEngine link engine feature}.\n *\n * @extends module:core/plugin~Plugin\n */\nvar Link = function (_Plugin) {\n\t_inherits(Link, _Plugin);\n\n\tfunction Link() {\n\t\t_classCallCheck(this, Link);\n\n\t\treturn _possibleConstructorReturn(this, (Link.__proto__ || Object.getPrototypeOf(Link)).apply(this, arguments));\n\t}\n\n\t_createClass(Link, [{\n\t\tkey: 'init',\n\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tvalue: function init() {\n\t\t\tthis.editor.editing.view.addObserver(_clickobserver2.default);\n\n\t\t\t/**\n    * Balloon panel view to display the main UI.\n    *\n    * @member {module:link/ui/balloonpanel~BalloonPanelView}\n    */\n\t\t\tthis.balloonPanelView = this._createBalloonPanel();\n\n\t\t\t/**\n    * The form view inside {@link #balloonPanelView}.\n    *\n    * @member {module:link/ui/linkformview~LinkFormView}\n    */\n\t\t\tthis.formView = this._createForm();\n\n\t\t\t// Create toolbar buttons.\n\t\t\tthis._createToolbarLinkButton();\n\t\t\tthis._createToolbarUnlinkButton();\n\t\t}\n\n\t\t/**\n   * Creates a toolbar link button. Clicking this button will show\n   * {@link #balloonPanelView} attached to the selection.\n   *\n   * @private\n   */\n\n\t}, {\n\t\tkey: '_createToolbarLinkButton',\n\t\tvalue: function _createToolbarLinkButton() {\n\t\t\tvar _this2 = this;\n\n\t\t\tvar editor = this.editor;\n\t\t\tvar linkCommand = editor.commands.get('link');\n\t\t\tvar t = editor.t;\n\n\t\t\t// Handle `Ctrl+K` keystroke and show panel.\n\t\t\teditor.keystrokes.set('CTRL+K', function () {\n\t\t\t\treturn _this2._showPanel();\n\t\t\t});\n\n\t\t\teditor.ui.componentFactory.add('link', function (locale) {\n\t\t\t\tvar button = new _buttonview2.default(locale);\n\n\t\t\t\tbutton.isEnabled = true;\n\t\t\t\tbutton.label = t('Link');\n\t\t\t\tbutton.icon = _link2.default;\n\t\t\t\tbutton.keystroke = 'CTRL+K';\n\t\t\t\tbutton.tooltip = true;\n\n\t\t\t\t// Bind button to the command.\n\t\t\t\tbutton.bind('isEnabled').to(linkCommand, 'isEnabled');\n\n\t\t\t\t// Show the panel on button click.\n\t\t\t\t_this2.listenTo(button, 'execute', function () {\n\t\t\t\t\treturn _this2._showPanel();\n\t\t\t\t});\n\n\t\t\t\treturn button;\n\t\t\t});\n\t\t}\n\n\t\t/**\n   * Creates a toolbar unlink button. Clicking this button will unlink\n   * the selected link.\n   *\n   * @private\n   */\n\n\t}, {\n\t\tkey: '_createToolbarUnlinkButton',\n\t\tvalue: function _createToolbarUnlinkButton() {\n\t\t\tvar _this3 = this;\n\n\t\t\tvar editor = this.editor;\n\t\t\tvar t = editor.t;\n\t\t\tvar unlinkCommand = editor.commands.get('unlink');\n\n\t\t\teditor.ui.componentFactory.add('unlink', function (locale) {\n\t\t\t\tvar button = new _buttonview2.default(locale);\n\n\t\t\t\tbutton.isEnabled = false;\n\t\t\t\tbutton.label = t('Unlink');\n\t\t\t\tbutton.icon = _unlink2.default;\n\t\t\t\tbutton.tooltip = true;\n\n\t\t\t\t// Bind button to the command.\n\t\t\t\tbutton.bind('isEnabled').to(unlinkCommand, 'isEnabled');\n\n\t\t\t\t// Execute unlink command and hide panel, if open on button click.\n\t\t\t\t_this3.listenTo(button, 'execute', function () {\n\t\t\t\t\treturn editor.execute('unlink');\n\t\t\t\t});\n\n\t\t\t\treturn button;\n\t\t\t});\n\t\t}\n\n\t\t/**\n   * Creates the {@link module:ui/balloonpanel/balloonpanelview~BalloonPanelView} instance.\n   *\n   * @private\n   * @returns {module:ui/balloonpanel/balloonpanelview~BalloonPanelView} Link balloon panel instance.\n   */\n\n\t}, {\n\t\tkey: '_createBalloonPanel',\n\t\tvalue: function _createBalloonPanel() {\n\t\t\tvar _this4 = this;\n\n\t\t\tvar editor = this.editor;\n\t\t\tvar viewDocument = editor.editing.view;\n\n\t\t\t// Create the balloon panel instance.\n\t\t\tvar balloonPanelView = new _balloonpanelview2.default(editor.locale);\n\t\t\tballoonPanelView.maxWidth = 300;\n\n\t\t\t// Add balloonPanel.view#element to FocusTracker.\n\t\t\t// @TODO: Do it automatically ckeditor5-core#23\n\t\t\teditor.ui.focusTracker.add(balloonPanelView.element);\n\n\t\t\t// Handle click on view document and show panel when selection is placed inside the link element.\n\t\t\t// Keep panel open until selection will be inside the same link element.\n\t\t\tthis.listenTo(viewDocument, 'click', function () {\n\t\t\t\tvar viewSelection = viewDocument.selection;\n\t\t\t\tvar parentLink = getPositionParentLink(viewSelection.getFirstPosition());\n\n\t\t\t\tif (viewSelection.isCollapsed && parentLink) {\n\t\t\t\t\t_this4._attachPanelToElement();\n\n\t\t\t\t\t_this4.listenTo(viewDocument, 'render', function () {\n\t\t\t\t\t\tvar currentParentLink = getPositionParentLink(viewSelection.getFirstPosition());\n\n\t\t\t\t\t\tif (!viewSelection.isCollapsed || parentLink !== currentParentLink) {\n\t\t\t\t\t\t\t_this4._hidePanel();\n\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\t_this4._attachPanelToElement(parentLink);\n\t\t\t\t\t\t}\n\t\t\t\t\t});\n\n\t\t\t\t\t_this4.listenTo(balloonPanelView, 'change:isVisible', function () {\n\t\t\t\t\t\treturn _this4.stopListening(viewDocument, 'render');\n\t\t\t\t\t});\n\t\t\t\t}\n\t\t\t});\n\n\t\t\t// Focus the form if balloon panel is open and tab key has been pressed.\n\t\t\teditor.keystrokes.set('Tab', function (data, cancel) {\n\t\t\t\tif (balloonPanelView.isVisible && !_this4.formView.focusTracker.isFocused) {\n\t\t\t\t\t_this4.formView.focus();\n\t\t\t\t\tcancel();\n\t\t\t\t}\n\t\t\t});\n\n\t\t\t// Close the panel on esc key press when editable has focus.\n\t\t\teditor.keystrokes.set('Esc', function (data, cancel) {\n\t\t\t\tif (balloonPanelView.isVisible) {\n\t\t\t\t\t_this4._hidePanel(true);\n\t\t\t\t\tcancel();\n\t\t\t\t}\n\t\t\t});\n\n\t\t\t// Close on click outside of balloon panel element.\n\t\t\t(0, _clickoutsidehandler2.default)({\n\t\t\t\temitter: balloonPanelView,\n\t\t\t\tactivator: function activator() {\n\t\t\t\t\treturn balloonPanelView.isVisible;\n\t\t\t\t},\n\t\t\t\tcontextElement: balloonPanelView.element,\n\t\t\t\tcallback: function callback() {\n\t\t\t\t\treturn _this4._hidePanel();\n\t\t\t\t}\n\t\t\t});\n\n\t\t\teditor.ui.view.body.add(balloonPanelView);\n\n\t\t\treturn balloonPanelView;\n\t\t}\n\n\t\t/**\n   * Creates the {@link module:link/ui/linkformview~LinkFormView} instance.\n   *\n   * @private\n   * @returns {module:link/ui/linkformview~LinkFormView} Link form instance.\n   */\n\n\t}, {\n\t\tkey: '_createForm',\n\t\tvalue: function _createForm() {\n\t\t\tvar _this5 = this;\n\n\t\t\tvar editor = this.editor;\n\t\t\tvar formView = new _linkformview2.default(editor.locale);\n\n\t\t\tformView.urlInputView.bind('value').to(editor.commands.get('link'), 'value');\n\n\t\t\t// Execute link command after clicking on formView `Save` button.\n\t\t\tthis.listenTo(formView, 'submit', function () {\n\t\t\t\teditor.execute('link', formView.urlInputView.inputView.element.value);\n\t\t\t\t_this5._hidePanel(true);\n\t\t\t});\n\n\t\t\t// Execute unlink command after clicking on formView `Unlink` button.\n\t\t\tthis.listenTo(formView, 'unlink', function () {\n\t\t\t\teditor.execute('unlink');\n\t\t\t\t_this5._hidePanel(true);\n\t\t\t});\n\n\t\t\t// Close the panel on esc key press when the form has focus.\n\t\t\tformView.keystrokes.set('Esc', function (data, cancel) {\n\t\t\t\t_this5._hidePanel(true);\n\t\t\t\tcancel();\n\t\t\t});\n\n\t\t\t// Hide balloon panel after clicking on formView `Cancel` button.\n\t\t\tthis.listenTo(formView, 'cancel', function () {\n\t\t\t\treturn _this5._hidePanel(true);\n\t\t\t});\n\n\t\t\tthis.balloonPanelView.content.add(formView);\n\n\t\t\treturn formView;\n\t\t}\n\n\t\t/**\n   * Shows {@link #balloonPanelView link balloon panel} and attach to target element.\n   * If selection is collapsed and is placed inside link element, then panel will be attached\n   * to whole link element, otherwise will be attached to the selection.\n   *\n   * @private\n   * @param {module:link/linkelement~LinkElement} [parentLink] Target element.\n   */\n\n\t}, {\n\t\tkey: '_attachPanelToElement',\n\t\tvalue: function _attachPanelToElement(parentLink) {\n\t\t\tvar viewDocument = this.editor.editing.view;\n\t\t\tvar targetLink = parentLink || getPositionParentLink(viewDocument.selection.getFirstPosition());\n\n\t\t\tvar target = targetLink ?\n\t\t\t// When selection is inside link element, then attach panel to this element.\n\t\t\tviewDocument.domConverter.getCorrespondingDomElement(targetLink) :\n\t\t\t// Otherwise attach panel to the selection.\n\t\t\tviewDocument.domConverter.viewRangeToDom(viewDocument.selection.getFirstRange());\n\n\t\t\tthis.balloonPanelView.attachTo({\n\t\t\t\ttarget: target,\n\t\t\t\tlimiter: viewDocument.domConverter.getCorrespondingDomElement(viewDocument.selection.editableElement)\n\t\t\t});\n\t\t}\n\n\t\t/**\n   * Hides {@link #balloonPanelView balloon panel view}.\n   *\n   * @private\n   * @param {Boolean} [focusEditable=false] When `true` then editable focus will be restored on panel hide.\n   */\n\n\t}, {\n\t\tkey: '_hidePanel',\n\t\tvalue: function _hidePanel(focusEditable) {\n\t\t\tthis.balloonPanelView.hide();\n\n\t\t\tif (focusEditable) {\n\t\t\t\tthis.editor.editing.view.focus();\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Shows {@link #balloonPanelView balloon panel view}.\n   *\n   * @private\n   */\n\n\t}, {\n\t\tkey: '_showPanel',\n\t\tvalue: function _showPanel() {\n\t\t\tthis._attachPanelToElement();\n\t\t\tthis.formView.urlInputView.select();\n\t\t}\n\t}], [{\n\t\tkey: 'requires',\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tget: function get() {\n\t\t\treturn [_linkengine2.default];\n\t\t}\n\t}]);\n\n\treturn Link;\n}(_plugin2.default);\n\n// Try to find if one of the position parent ancestors is a LinkElement,\n// if yes return this element.\n//\n// @private\n// @param {engine.view.Position} position\n// @returns {module:link/linkelement~LinkElement|null}\n\n\nexports.default = Link;\nfunction getPositionParentLink(position) {\n\treturn position.parent.getAncestors().find(function (ancestor) {\n\t\treturn ancestor instanceof _linkelement2.default;\n\t});\n}\n\n/***/ }),\n/* 349 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _command = __webpack_require__(15);\n\nvar _command2 = _interopRequireDefault(_command);\n\nvar _text = __webpack_require__(23);\n\nvar _text2 = _interopRequireDefault(_text);\n\nvar _range = __webpack_require__(3);\n\nvar _range2 = _interopRequireDefault(_range);\n\nvar _getschemavalidranges = __webpack_require__(100);\n\nvar _getschemavalidranges2 = _interopRequireDefault(_getschemavalidranges);\n\nvar _isattributeallowedinselection = __webpack_require__(156);\n\nvar _isattributeallowedinselection2 = _interopRequireDefault(_isattributeallowedinselection);\n\nvar _findlinkrange = __webpack_require__(177);\n\nvar _findlinkrange2 = _interopRequireDefault(_findlinkrange);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module link/linkcommand\n */\n\n/**\n * The link command. It is used by the {@link module:link/link~Link link feature}.\n *\n * @extends module:core/command/command~Command\n */\nvar LinkCommand = function (_Command) {\n\t_inherits(LinkCommand, _Command);\n\n\t/**\n  * @see module:core/command/command~Command\n  * @param {module:core/editor/editor~Editor} editor\n  */\n\tfunction LinkCommand(editor) {\n\t\t_classCallCheck(this, LinkCommand);\n\n\t\t/**\n   * Currently selected `linkHref` attribute value.\n   *\n   * @observable\n   * @member {Boolean} module:core/command/toggleattributecommand~ToggleAttributeCommand#value\n   */\n\t\tvar _this = _possibleConstructorReturn(this, (LinkCommand.__proto__ || Object.getPrototypeOf(LinkCommand)).call(this, editor));\n\n\t\t_this.set('value', undefined);\n\n\t\t_this.listenTo(_this.editor.document.selection, 'change:attribute', function () {\n\t\t\t_this.value = _this.editor.document.selection.getAttribute('linkHref');\n\t\t});\n\t\treturn _this;\n\t}\n\n\t/**\n  * Checks if {@link module:engine/model/document~Document#schema} allows to create attribute in {@link\n  * module:engine/model/document~Document#selection}\n  *\n  * @protected\n  * @returns {Boolean}\n  */\n\n\n\t_createClass(LinkCommand, [{\n\t\tkey: '_checkEnabled',\n\t\tvalue: function _checkEnabled() {\n\t\t\tvar document = this.editor.document;\n\n\t\t\treturn (0, _isattributeallowedinselection2.default)('linkHref', document.selection, document.schema);\n\t\t}\n\n\t\t/**\n   * Executes the command.\n   *\n   * When selection is non-collapsed, then `linkHref` attribute will be applied to nodes inside selection, but only to\n   * those nodes where `linkHref` attribute is allowed (disallowed nodes will be omitted).\n   *\n   * When selection is collapsed and is not inside text with `linkHref` attribute, then new {@link module:engine/model/text~Text Text node}\n   * with\n   * `linkHref` attribute will be inserted in place of caret, but only if such an element is allowed in this place. `_data` of\n   * the inserted text will equal `href` parameter. Selection will be updated to wrap just inserted text node.\n   *\n   * When selection is collapsed and inside text with `linkHref` attribute, the attribute value will be updated.\n   *\n   * @protected\n   * @param {String} href Link destination.\n   */\n\n\t}, {\n\t\tkey: '_doExecute',\n\t\tvalue: function _doExecute(href) {\n\t\t\tvar document = this.editor.document;\n\t\t\tvar selection = document.selection;\n\n\t\t\tdocument.enqueueChanges(function () {\n\t\t\t\t// Keep it as one undo step.\n\t\t\t\tvar batch = document.batch();\n\n\t\t\t\t// If selection is collapsed then update selected link or insert new one at the place of caret.\n\t\t\t\tif (selection.isCollapsed) {\n\t\t\t\t\tvar position = selection.getFirstPosition();\n\t\t\t\t\tvar parent = position.parent;\n\n\t\t\t\t\t// When selection is inside text with `linkHref` attribute.\n\t\t\t\t\tif (selection.hasAttribute('linkHref')) {\n\t\t\t\t\t\t// Then update `linkHref` value.\n\t\t\t\t\t\tvar linkRange = (0, _findlinkrange2.default)(selection.getFirstPosition(), selection.getAttribute('linkHref'));\n\n\t\t\t\t\t\tbatch.setAttribute(linkRange, 'linkHref', href);\n\n\t\t\t\t\t\t// Create new range wrapping changed link.\n\t\t\t\t\t\tselection.setRanges([linkRange]);\n\t\t\t\t\t}\n\t\t\t\t\t// If not then insert text node with `linkHref` attribute in place of caret.\n\t\t\t\t\telse if (document.schema.check({ name: '$text', attributes: 'linkHref', inside: parent.name })) {\n\t\t\t\t\t\t\tvar node = new _text2.default(href, { linkHref: href });\n\n\t\t\t\t\t\t\tbatch.insert(position, node);\n\n\t\t\t\t\t\t\t// Create new range wrapping created node.\n\t\t\t\t\t\t\tselection.setRanges([_range2.default.createOn(node)]);\n\t\t\t\t\t\t}\n\t\t\t\t} else {\n\t\t\t\t\t// If selection has non-collapsed ranges, we change attribute on nodes inside those ranges\n\t\t\t\t\t// omitting nodes where `linkHref` attribute is disallowed.\n\t\t\t\t\tvar ranges = (0, _getschemavalidranges2.default)('linkHref', selection.getRanges(), document.schema);\n\n\t\t\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\t\t\tvar _didIteratorError = false;\n\t\t\t\t\tvar _iteratorError = undefined;\n\n\t\t\t\t\ttry {\n\t\t\t\t\t\tfor (var _iterator = ranges[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\t\t\tvar range = _step.value;\n\n\t\t\t\t\t\t\tbatch.setAttribute(range, 'linkHref', href);\n\t\t\t\t\t\t}\n\t\t\t\t\t} catch (err) {\n\t\t\t\t\t\t_didIteratorError = true;\n\t\t\t\t\t\t_iteratorError = err;\n\t\t\t\t\t} finally {\n\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} finally {\n\t\t\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t});\n\t\t}\n\t}]);\n\n\treturn LinkCommand;\n}(_command2.default);\n\nexports.default = LinkCommand;\n\n/***/ }),\n/* 350 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _plugin = __webpack_require__(2);\n\nvar _plugin2 = _interopRequireDefault(_plugin);\n\nvar _buildmodelconverter = __webpack_require__(45);\n\nvar _buildmodelconverter2 = _interopRequireDefault(_buildmodelconverter);\n\nvar _buildviewconverter = __webpack_require__(46);\n\nvar _buildviewconverter2 = _interopRequireDefault(_buildviewconverter);\n\nvar _linkelement = __webpack_require__(178);\n\nvar _linkelement2 = _interopRequireDefault(_linkelement);\n\nvar _linkcommand = __webpack_require__(349);\n\nvar _linkcommand2 = _interopRequireDefault(_linkcommand);\n\nvar _unlinkcommand = __webpack_require__(352);\n\nvar _unlinkcommand2 = _interopRequireDefault(_unlinkcommand);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module link/linkengine\n */\n\n/**\n * The link engine feature.\n *\n * It introduces the `linkHref=\"url\"` attribute in the model which renders to the view as a `<a href=\"url\">` element.\n *\n * @extends module:core/plugin~Plugin\n */\nvar LinkEngine = function (_Plugin) {\n\t_inherits(LinkEngine, _Plugin);\n\n\tfunction LinkEngine() {\n\t\t_classCallCheck(this, LinkEngine);\n\n\t\treturn _possibleConstructorReturn(this, (LinkEngine.__proto__ || Object.getPrototypeOf(LinkEngine)).apply(this, arguments));\n\t}\n\n\t_createClass(LinkEngine, [{\n\t\tkey: 'init',\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tvalue: function init() {\n\t\t\tvar editor = this.editor;\n\t\t\tvar data = editor.data;\n\t\t\tvar editing = editor.editing;\n\n\t\t\t// Allow link attribute on all inline nodes.\n\t\t\teditor.document.schema.allow({ name: '$inline', attributes: 'linkHref' });\n\n\t\t\t// Build converter from model to view for data and editing pipelines.\n\t\t\t(0, _buildmodelconverter2.default)().for(data.modelToView, editing.modelToView).fromAttribute('linkHref').toElement(function (linkHref) {\n\t\t\t\treturn new _linkelement2.default('a', { href: linkHref });\n\t\t\t});\n\n\t\t\t// Build converter from view to model for data pipeline.\n\t\t\t(0, _buildviewconverter2.default)().for(data.viewToModel).fromElement('a').toAttribute(function (viewElement) {\n\t\t\t\treturn {\n\t\t\t\t\tkey: 'linkHref',\n\t\t\t\t\tvalue: viewElement.getAttribute('href')\n\t\t\t\t};\n\t\t\t});\n\n\t\t\t// Create linking commands.\n\t\t\teditor.commands.set('link', new _linkcommand2.default(editor));\n\t\t\teditor.commands.set('unlink', new _unlinkcommand2.default(editor));\n\t\t}\n\t}]);\n\n\treturn LinkEngine;\n}(_plugin2.default);\n\nexports.default = LinkEngine;\n\n/***/ }),\n/* 351 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if (\"value\" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };\n\nvar _view = __webpack_require__(7);\n\nvar _view2 = _interopRequireDefault(_view);\n\nvar _template = __webpack_require__(6);\n\nvar _template2 = _interopRequireDefault(_template);\n\nvar _viewcollection = __webpack_require__(121);\n\nvar _viewcollection2 = _interopRequireDefault(_viewcollection);\n\nvar _buttonview = __webpack_require__(25);\n\nvar _buttonview2 = _interopRequireDefault(_buttonview);\n\nvar _labeledinputview = __webpack_require__(187);\n\nvar _labeledinputview2 = _interopRequireDefault(_labeledinputview);\n\nvar _inputtextview = __webpack_require__(186);\n\nvar _inputtextview2 = _interopRequireDefault(_inputtextview);\n\nvar _submithandler = __webpack_require__(185);\n\nvar _submithandler2 = _interopRequireDefault(_submithandler);\n\nvar _focustracker = __webpack_require__(60);\n\nvar _focustracker2 = _interopRequireDefault(_focustracker);\n\nvar _focuscycler = __webpack_require__(120);\n\nvar _focuscycler2 = _interopRequireDefault(_focuscycler);\n\nvar _keystrokehandler = __webpack_require__(61);\n\nvar _keystrokehandler2 = _interopRequireDefault(_keystrokehandler);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module link/ui/linkformview\n */\n\n/**\n * The link form view controller class.\n *\n * See {@link module:link/ui/linkformview~LinkFormView}.\n *\n * @extends module:ui/view~View\n */\nvar LinkFormView = function (_View) {\n\t_inherits(LinkFormView, _View);\n\n\t/**\n  * @inheritDoc\n  */\n\tfunction LinkFormView(locale) {\n\t\t_classCallCheck(this, LinkFormView);\n\n\t\tvar _this = _possibleConstructorReturn(this, (LinkFormView.__proto__ || Object.getPrototypeOf(LinkFormView)).call(this, locale));\n\n\t\tvar t = locale.t;\n\n\t\t/**\n   * Tracks information about DOM focus in the form.\n   *\n   * @readonly\n   * @member {module:utils/focustracker~FocusTracker}\n   */\n\t\t_this.focusTracker = new _focustracker2.default();\n\n\t\t/**\n   * Instance of the {@link module:core/keystrokehandler~KeystrokeHandler}.\n   *\n   * @readonly\n   * @member {module:core/keystrokehandler~KeystrokeHandler}\n   */\n\t\t_this.keystrokes = new _keystrokehandler2.default();\n\n\t\t/**\n   * The url input view.\n   *\n   * @member {module:ui/labeledinput/labeledinputview~LabeledInputView}\n   */\n\t\t_this.urlInputView = _this._createUrlInput();\n\n\t\t/**\n   * The save button view.\n   *\n   * @member {module:ui/button/buttonview~ButtonView}\n   */\n\t\t_this.saveButtonView = _this._createButton(t('Save'));\n\t\t_this.saveButtonView.type = 'submit';\n\n\t\t/**\n   * The cancel button view.\n   *\n   * @member {module:ui/button/buttonview~ButtonView}\n   */\n\t\t_this.cancelButtonView = _this._createButton(t('Cancel'), 'cancel');\n\n\t\t/**\n   * The unlink button view.\n   *\n   * @member {module:ui/button/buttonview~ButtonView}\n   */\n\t\t_this.unlinkButtonView = _this._createButton(t('Unlink'), 'unlink');\n\n\t\t/**\n   * A collection of views which can be focused in the form.\n   *\n   * @readonly\n   * @protected\n   * @member {module:ui/viewcollection~ViewCollection}\n   */\n\t\t_this._focusables = new _viewcollection2.default();\n\n\t\t/**\n   * Helps cycling over {@link #_focusables} in the form.\n   *\n   * @readonly\n   * @protected\n   * @member {module:ui/focuscycler~FocusCycler}\n   */\n\t\t_this._focusCycler = new _focuscycler2.default({\n\t\t\tfocusables: _this._focusables,\n\t\t\tfocusTracker: _this.focusTracker,\n\t\t\tkeystrokeHandler: _this.keystrokes,\n\t\t\tactions: {\n\t\t\t\t// Navigate form fields backwards using the shift + tab keystroke.\n\t\t\t\tfocusPrevious: 'shift + tab',\n\n\t\t\t\t// Navigate form fields forwards using the tab key.\n\t\t\t\tfocusNext: 'tab'\n\t\t\t}\n\t\t});\n\n\t\t_template2.default.extend(_this.saveButtonView.template, {\n\t\t\tattributes: {\n\t\t\t\tclass: ['ck-button-action']\n\t\t\t}\n\t\t});\n\n\t\t_this.template = new _template2.default({\n\t\t\ttag: 'form',\n\n\t\t\tattributes: {\n\t\t\t\tclass: ['ck-link-form']\n\t\t\t},\n\n\t\t\tchildren: [_this.urlInputView, {\n\t\t\t\ttag: 'div',\n\n\t\t\t\tattributes: {\n\t\t\t\t\tclass: ['ck-link-form__actions']\n\t\t\t\t},\n\n\t\t\t\tchildren: [_this.saveButtonView, _this.cancelButtonView, _this.unlinkButtonView]\n\t\t\t}]\n\t\t});\n\n\t\t(0, _submithandler2.default)({\n\t\t\tview: _this\n\t\t});\n\n\t\tvar childViews = [_this.urlInputView, _this.saveButtonView, _this.cancelButtonView, _this.unlinkButtonView];\n\n\t\tchildViews.forEach(function (v) {\n\t\t\t// Register the view as focusable.\n\t\t\t_this._focusables.add(v);\n\n\t\t\t// Register the view in the focus tracker.\n\t\t\t_this.focusTracker.add(v.element);\n\t\t});\n\t\treturn _this;\n\t}\n\n\t/**\n  * @inheritDoc\n  */\n\n\n\t_createClass(LinkFormView, [{\n\t\tkey: 'init',\n\t\tvalue: function init() {\n\t\t\t// Start listening for the keystrokes coming from #element.\n\t\t\tthis.keystrokes.listenTo(this.element);\n\n\t\t\treturn _get(LinkFormView.prototype.__proto__ || Object.getPrototypeOf(LinkFormView.prototype), 'init', this).call(this);\n\t\t}\n\n\t\t/**\n   * Focuses the fist {@link #_focusables} in the form.\n   */\n\n\t}, {\n\t\tkey: 'focus',\n\t\tvalue: function focus() {\n\t\t\tthis._focusCycler.focusFirst();\n\t\t}\n\n\t\t/**\n   * Create labeled input view.\n   *\n   * @private\n   * @returns {module:ui/labeledinput/labeledinputview~LabeledInputView} Labeled input view instance.\n   */\n\n\t}, {\n\t\tkey: '_createUrlInput',\n\t\tvalue: function _createUrlInput() {\n\t\t\tvar t = this.locale.t;\n\n\t\t\tvar labeledInput = new _labeledinputview2.default(this.locale, _inputtextview2.default);\n\n\t\t\tlabeledInput.label = t('Link URL');\n\n\t\t\treturn labeledInput;\n\t\t}\n\n\t\t/**\n   * Creates button View.\n   *\n   * @private\n   * @param {String} label Button label\n   * @param {String} [eventName] Event name which ButtonView#execute event will be delegated to.\n   * @returns {module:ui/button/buttonview~ButtonView} Button view instance.\n   */\n\n\t}, {\n\t\tkey: '_createButton',\n\t\tvalue: function _createButton(label, eventName) {\n\t\t\tvar button = new _buttonview2.default(this.locale);\n\n\t\t\tbutton.label = label;\n\t\t\tbutton.withText = true;\n\n\t\t\tif (eventName) {\n\t\t\t\tbutton.delegate('execute').to(this, eventName);\n\t\t\t}\n\n\t\t\treturn button;\n\t\t}\n\t}]);\n\n\treturn LinkFormView;\n}(_view2.default);\n\n/**\n * Fired when the form view is submitted (when one of the child triggered submit event).\n * E.g. click on {@link #saveButtonView}.\n *\n * @event submit\n */\n\n/**\n * Fired when the form view is canceled, e.g. click on {@link #cancelButtonView}.\n *\n * @event cancel\n */\n\n/**\n * Fired when the {@link #unlinkButtonView} is clicked.\n *\n * @event unlink\n */\n\n\nexports.default = LinkFormView;\n\n/***/ }),\n/* 352 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _command = __webpack_require__(15);\n\nvar _command2 = _interopRequireDefault(_command);\n\nvar _findlinkrange = __webpack_require__(177);\n\nvar _findlinkrange2 = _interopRequireDefault(_findlinkrange);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module link/unlinkcommand\n */\n\n/**\n * The unlink command. It is used by the {@link module:link/link~Link link plugin}.\n *\n * @extends module:core/command/command~Command\n */\nvar UnlinkCommand = function (_Command) {\n\t_inherits(UnlinkCommand, _Command);\n\n\t/**\n  * @see module:core/command/command~Command\n  * @param {module:core/editor/editor~Editor} editor\n  */\n\tfunction UnlinkCommand(editor) {\n\t\t_classCallCheck(this, UnlinkCommand);\n\n\t\t// Checks when command should be enabled or disabled.\n\t\tvar _this = _possibleConstructorReturn(this, (UnlinkCommand.__proto__ || Object.getPrototypeOf(UnlinkCommand)).call(this, editor));\n\n\t\t_this.listenTo(editor.document.selection, 'change:attribute', function () {\n\t\t\treturn _this.refreshState();\n\t\t});\n\t\treturn _this;\n\t}\n\n\t/**\n  * Executes the command.\n  *\n  * When the selection is collapsed, removes `linkHref` attribute from each node with the same `linkHref` attribute value.\n  * When the selection is non-collapsed, removes `linkHref` from each node in selected ranges.\n  *\n  * @protected\n  */\n\n\n\t_createClass(UnlinkCommand, [{\n\t\tkey: '_doExecute',\n\t\tvalue: function _doExecute() {\n\t\t\tvar document = this.editor.document;\n\t\t\tvar selection = document.selection;\n\n\t\t\tdocument.enqueueChanges(function () {\n\t\t\t\t// Get ranges to unlink.\n\t\t\t\tvar rangesToUnlink = selection.isCollapsed ? [(0, _findlinkrange2.default)(selection.getFirstPosition(), selection.getAttribute('linkHref'))] : selection.getRanges();\n\n\t\t\t\t// Keep it as one undo step.\n\t\t\t\tvar batch = document.batch();\n\n\t\t\t\t// Remove `linkHref` attribute from specified ranges.\n\t\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\t\tvar _didIteratorError = false;\n\t\t\t\tvar _iteratorError = undefined;\n\n\t\t\t\ttry {\n\t\t\t\t\tfor (var _iterator = rangesToUnlink[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\t\tvar range = _step.value;\n\n\t\t\t\t\t\tbatch.removeAttribute(range, 'linkHref');\n\t\t\t\t\t}\n\t\t\t\t} catch (err) {\n\t\t\t\t\t_didIteratorError = true;\n\t\t\t\t\t_iteratorError = err;\n\t\t\t\t} finally {\n\t\t\t\t\ttry {\n\t\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t\t}\n\t\t\t\t\t} finally {\n\t\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t});\n\t\t}\n\n\t\t/**\n   * Checks if selection has `linkHref` attribute.\n   *\n   * @protected\n   * @returns {Boolean}\n   */\n\n\t}, {\n\t\tkey: '_checkEnabled',\n\t\tvalue: function _checkEnabled() {\n\t\t\treturn this.editor.document.selection.hasAttribute('linkHref');\n\t\t}\n\t}]);\n\n\treturn UnlinkCommand;\n}(_command2.default);\n\nexports.default = UnlinkCommand;\n\n/***/ }),\n/* 353 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\nexports.modelViewInsertion = modelViewInsertion;\nexports.modelViewChangeType = modelViewChangeType;\nexports.modelViewRemove = modelViewRemove;\nexports.modelViewChangeIndent = modelViewChangeIndent;\nexports.modelViewSplitOnInsert = modelViewSplitOnInsert;\nexports.modelViewMergeAfter = modelViewMergeAfter;\nexports.viewModelConverter = viewModelConverter;\nexports.cleanList = cleanList;\nexports.modelToViewPosition = modelToViewPosition;\nexports.viewToModelPosition = viewToModelPosition;\n\nvar _viewlistitemelement = __webpack_require__(357);\n\nvar _viewlistitemelement2 = _interopRequireDefault(_viewlistitemelement);\n\nvar _element = __webpack_require__(5);\n\nvar _element2 = _interopRequireDefault(_element);\n\nvar _position = __webpack_require__(1);\n\nvar _position2 = _interopRequireDefault(_position);\n\nvar _containerelement = __webpack_require__(39);\n\nvar _containerelement2 = _interopRequireDefault(_containerelement);\n\nvar _position3 = __webpack_require__(24);\n\nvar _position4 = _interopRequireDefault(_position3);\n\nvar _range = __webpack_require__(33);\n\nvar _range2 = _interopRequireDefault(_range);\n\nvar _writer = __webpack_require__(77);\n\nvar _writer2 = _interopRequireDefault(_writer);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Model to view converter for `listItem` model element insertion.\n *\n * It creates `<ul><li></li><ul>` (or `<ol>`) view structure out of `listItem` model element, inserts it at correct\n * position, and merges the list with surrounding lists (if able).\n *\n * @see module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:insert\n * @param {module:utils/eventinfo~EventInfo} evt Object containing information about the fired event.\n * @param {Object} data Additional information about the change.\n * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n * @param {Object} conversionApi Conversion interface.\n */\nfunction modelViewInsertion(evt, data, consumable, conversionApi) {\n\tif (!consumable.test(data.item, 'insert') || !consumable.test(data.item, 'addAttribute:type') || !consumable.test(data.item, 'addAttribute:indent')) {\n\t\treturn;\n\t}\n\n\tconsumable.consume(data.item, 'insert');\n\tconsumable.consume(data.item, 'addAttribute:type');\n\tconsumable.consume(data.item, 'addAttribute:indent');\n\n\tvar modelItem = data.item;\n\tvar viewItem = generateLiInUl(modelItem, conversionApi.mapper);\n\n\tinjectViewList(modelItem, viewItem, conversionApi.mapper);\n}\n\n/**\n * Model to view converter for `type` attribute change on `listItem` model element.\n *\n * This change means that `<li>`s parent changes from `<ul>` to `<ol>` (or vice versa). This is accomplished by breaking\n * view elements, changing their name and merging them.\n *\n * @see module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:changeAttribute\n * @param {module:utils/eventinfo~EventInfo} evt Object containing information about the fired event.\n * @param {Object} data Additional information about the change.\n * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n * @param {Object} conversionApi Conversion interface.\n */\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module list/converters\n */\n\nfunction modelViewChangeType(evt, data, consumable, conversionApi) {\n\tif (!consumable.consume(data.item, 'changeAttribute:type')) {\n\t\treturn;\n\t}\n\n\tvar viewItem = conversionApi.mapper.toViewElement(data.item);\n\n\t// 1. Break the container after and before the list item.\n\t// This will create a view list with one view list item -- the one that changed type.\n\t_writer2.default.breakContainer(_position4.default.createBefore(viewItem));\n\t_writer2.default.breakContainer(_position4.default.createAfter(viewItem));\n\n\t// 2. Change name of the view list that holds the changed view item.\n\t// We cannot just change name property, because that would not render properly.\n\tvar viewList = viewItem.parent;\n\tvar listName = data.attributeNewValue == 'numbered' ? 'ol' : 'ul';\n\tviewList = _writer2.default.rename(viewList, listName);\n\n\t// 3. Merge the changed view list with other lists, if possible.\n\tmergeViewLists(viewList, viewList.nextSibling);\n\tmergeViewLists(viewList.previousSibling, viewList);\n}\n\n/**\n * Model to view converter for `listItem` model element remove.\n *\n * @see module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:remove\n * @param {module:utils/eventinfo~EventInfo} evt Object containing information about the fired event.\n * @param {Object} data Additional information about the change.\n * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n * @param {Object} conversionApi Conversion interface.\n */\nfunction modelViewRemove(evt, data, consumable, conversionApi) {\n\tif (!consumable.consume(data.item, 'remove')) {\n\t\treturn;\n\t}\n\n\tvar viewItem = conversionApi.mapper.toViewElement(data.item);\n\n\t// 1. Break the container after and before the list item.\n\t// This will create a view list with one view list item -- the one that changed type.\n\t_writer2.default.breakContainer(_position4.default.createBefore(viewItem));\n\t_writer2.default.breakContainer(_position4.default.createAfter(viewItem));\n\n\t// 2. Remove the UL that contains just the removed LI.\n\tvar viewList = viewItem.parent;\n\t_writer2.default.remove(_range2.default.createOn(viewList));\n}\n\n/**\n * Model to view converter for `indent` attribute change on `listItem` model element.\n *\n * @see module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:changeAttribute\n * @param {module:utils/eventinfo~EventInfo} evt Object containing information about the fired event.\n * @param {Object} data Additional information about the change.\n * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n * @param {Object} conversionApi Conversion interface.\n */\nfunction modelViewChangeIndent(evt, data, consumable, conversionApi) {\n\t/* istanbul ignore if */ // Part of code connected with indenting that is not yet complete.\n\tif (!consumable.consume(data.item, 'changeAttribute:indent')) {\n\t\treturn;\n\t}\n\n\tvar viewItem = conversionApi.mapper.toViewElement(data.item);\n\n\t// 1. Break the container after and before the list item.\n\t// This will create a view list with one view list item -- the one that changed type.\n\t_writer2.default.breakContainer(_position4.default.createBefore(viewItem));\n\t_writer2.default.breakContainer(_position4.default.createAfter(viewItem));\n\n\t// 2. Extract view list with changed view list item and merge \"hole\" possibly created by breaking and removing elements.\n\tvar viewList = viewItem.parent;\n\tvar viewListPrev = viewList.previousSibling;\n\n\t_writer2.default.remove(_range2.default.createOn(viewList));\n\n\t// If there is no `viewListPrev` it means that the first item was indented which is an error.\n\tmergeViewLists(viewListPrev, viewListPrev.nextSibling);\n\n\t// 3. Inject view list like it is newly inserted.\n\tinjectViewList(data.item, viewItem, conversionApi.mapper);\n}\n\n/**\n * A special model to view converter introduced by {@link module:list/list~List List feature}. This converter is fired for\n * insert change of every model item, and should be fired before actual converter. The converter checks whether inserted\n * model item is a non-`listItem` element. If it is, and it is inserted inside a view list, the converter breaks the\n * list so the model element is inserted to the view parent element corresponding to its model parent element.\n *\n * The converter prevents such situations:\n *\n *\t\t// Model:                        // View:\n *\t\t<listItem>foo</listItem>         <ul>\n *\t\t<listItem>bar</listItem>             <li>foo</li>\n *\t\t                                     <li>bar</li>\n *\t\t                                 </ul>\n *\n *\t\t// After change:                 // Correct view guaranteed by this converter:\n *\t\t<listItem>foo</listItem>         <ul><li>foo</li></ul><p>xxx</p><ul><li>bar</li></ul>\n *\t\t<paragraph>xxx</paragraph>       // Instead of this wrong view state:\n *\t\t<listItem>bar</listItem>         <ul><li>foo</li><p>xxx</p><li>bar</li></ul>\n *\n * @see module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:insert\n * @param {module:utils/eventinfo~EventInfo} evt Object containing information about the fired event.\n * @param {Object} data Additional information about the change.\n * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n * @param {Object} conversionApi Conversion interface.\n */\nfunction modelViewSplitOnInsert(evt, data, consumable, conversionApi) {\n\tif (data.item.name != 'listItem') {\n\t\tvar viewPosition = conversionApi.mapper.toViewPosition(data.range.start);\n\n\t\t// Break multiple ULs/OLs if there are.\n\t\twhile (viewPosition.parent.name == 'ul' || viewPosition.parent.name == 'ol') {\n\t\t\tviewPosition = _writer2.default.breakContainer(viewPosition);\n\n\t\t\t/* istanbul ignore else */ // Part of code connected with indenting that is not yet complete.\n\t\t\tif (viewPosition.parent.parent === null) {\n\t\t\t\tbreak;\n\t\t\t}\n\n\t\t\t/* istanbul ignore next */ // Part of code connected with indenting that is not yet complete.\n\t\t\tviewPosition = _position4.default.createBefore(viewPosition.parent);\n\t\t}\n\t}\n}\n\n/**\n * A special model to view converter introduced by {@link module:list/list~List List feature}. This converter takes care of\n * merging view lists after something is removed or moved from near them.\n *\n * Example:\n *\n *\t\t// Model:                        // View:\n *\t\t<listItem>foo</listItem>         <ul><li>foo</li></ul>\n *\t\t<paragraph>xxx</paragraph>       <p>xxx</p>\n *\t\t<listItem>bar</listItem>         <ul><li>bar</li></ul>\n *\n *\t\t// After change:                 // Correct view guaranteed by this converter:\n *\t\t<listItem>foo</listItem>         <ul>\n *\t\t<listItem>bar</listItem>             <li>foo</li>\n *\t\t                                     <li>bar</li>\n *\t\t                                 </ul>\n *\n * @see module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:remove\n * @see module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:move\n * @param {module:utils/eventinfo~EventInfo} evt Object containing information about the fired event.\n * @param {Object} data Additional information about the change.\n * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n * @param {Object} conversionApi Conversion interface.\n */\nfunction modelViewMergeAfter(evt, data, consumable, conversionApi) {\n\tvar viewPosition = conversionApi.mapper.toViewPosition(data.sourcePosition);\n\tvar viewItemPrev = viewPosition.nodeBefore;\n\tvar viewItemNext = viewPosition.nodeAfter;\n\n\t// Merge lists if something (remove, move) was done from inside of list.\n\t// Merging will be done only if both items are view lists of the same type.\n\t// The check is done inside the helper function.\n\tmergeViewLists(viewItemPrev, viewItemNext);\n}\n\n/**\n * View to model converter that converts view `<li>` elements into `listItem` model elements.\n *\n * To set correct values of `type` and `indent` attribute the converter:\n * * checks `<li>`'s parent,\n * * passes `data.indent` value when `<li>`'s sub-items are converted.\n *\n * @see module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher#event:element\n * @param {module:utils/eventinfo~EventInfo} evt Object containing information about the fired event.\n * @param {Object} data Object containing conversion input and a placeholder for conversion output and possibly other values.\n * @param {module:engine/conversion/viewconsumable~ViewConsumable} consumable Values to consume.\n * @param {Object} conversionApi Conversion interface to be used by callback.\n */\nfunction viewModelConverter(evt, data, consumable, conversionApi) {\n\tif (consumable.consume(data.input, { name: true })) {\n\t\t// 1. Create `listItem` model element.\n\t\tvar listItem = new _element2.default('listItem');\n\n\t\t// 2. Handle `listItem` model element attributes.\n\t\tdata.indent = data.indent ? data.indent : 0;\n\n\t\tvar type = data.input.parent.name == 'ul' ? 'bulleted' : 'numbered';\n\t\tlistItem.setAttribute('type', type);\n\t\tlistItem.setAttribute('indent', data.indent);\n\n\t\t// 3. Handle `<li>` children.\n\t\tdata.context.push(listItem);\n\n\t\t// `listItem`s created recursievly should have bigger indent.\n\t\tdata.indent++;\n\n\t\t// `listItem`s will be kept in flat structure.\n\t\tvar items = [listItem];\n\n\t\t// Check all children of the converted `<li>`.\n\t\t// At this point we assume there are no \"whitespace\" view text nodes in view list, between view list items.\n\t\t// This should be handled by `<ul>` and `<ol>` converters.\n\t\tvar _iteratorNormalCompletion = true;\n\t\tvar _didIteratorError = false;\n\t\tvar _iteratorError = undefined;\n\n\t\ttry {\n\t\t\tfor (var _iterator = data.input.getChildren()[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\tvar child = _step.value;\n\n\t\t\t\t// Let's convert the child.\n\t\t\t\tvar converted = conversionApi.convertItem(child, consumable, data);\n\n\t\t\t\t// If this is a view list element, we will convert it and concat the result (`listItem` model elements)\n\t\t\t\t// with already gathered results (in `items` array). `converted` should be a `ModelDocumentFragment`.\n\t\t\t\tif (child.name == 'ul' || child.name == 'ol') {\n\t\t\t\t\titems = items.concat(Array.from(converted.getChildren()));\n\t\t\t\t}\n\t\t\t\t// If it was not a list it was a \"regular\" list item content. Just append it to `listItem`.\n\t\t\t\telse {\n\t\t\t\t\t\tlistItem.appendChildren(converted);\n\t\t\t\t\t}\n\t\t\t}\n\t\t} catch (err) {\n\t\t\t_didIteratorError = true;\n\t\t\t_iteratorError = err;\n\t\t} finally {\n\t\t\ttry {\n\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t_iterator.return();\n\t\t\t\t}\n\t\t\t} finally {\n\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\tdata.indent--;\n\t\tdata.context.pop();\n\n\t\t/* istanbul ignore next */ // Part of code connected with indenting that is not yet complete.\n\t\tdata.output = data.output ? data.output.concat(items) : items;\n\t}\n}\n\n/**\n * View to model converter for `<ul>` and `<ol>` view elements, that cleans the input view out of garbage.\n * This is mostly to clean white spaces from between `<li>` view elements inside the view list element, however also\n * incorrect data can be cleared if the view was incorrect.\n *\n * @see module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher#event:element\n * @param {module:utils/eventinfo~EventInfo} evt Object containing information about the fired event.\n * @param {Object} data Object containing conversion input and a placeholder for conversion output and possibly other values.\n * @param {module:engine/conversion/viewconsumable~ViewConsumable} consumable Values to consume.\n */\nfunction cleanList(evt, data, consumable) {\n\tif (consumable.test(data.input, { name: true })) {\n\t\t// Caching children because when we start removing them iterating fails.\n\t\tvar children = Array.from(data.input.getChildren());\n\n\t\tvar _iteratorNormalCompletion2 = true;\n\t\tvar _didIteratorError2 = false;\n\t\tvar _iteratorError2 = undefined;\n\n\t\ttry {\n\t\t\tfor (var _iterator2 = children[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {\n\t\t\t\tvar child = _step2.value;\n\n\t\t\t\tif (!child.name || child.name != 'li') {\n\t\t\t\t\tchild.remove();\n\t\t\t\t}\n\t\t\t}\n\t\t} catch (err) {\n\t\t\t_didIteratorError2 = true;\n\t\t\t_iteratorError2 = err;\n\t\t} finally {\n\t\t\ttry {\n\t\t\t\tif (!_iteratorNormalCompletion2 && _iterator2.return) {\n\t\t\t\t\t_iterator2.return();\n\t\t\t\t}\n\t\t\t} finally {\n\t\t\t\tif (_didIteratorError2) {\n\t\t\t\t\tthrow _iteratorError2;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n}\n\n/**\n * Callback for model position to view position mapping for {@link module:engine/conversion/mapper~Mapper}. The callback fixes positions\n * between `listItem` elements, that would be incorrectly mapped because of how list items are represented in model\n * and view.\n *\n * @see module:engine/conversion/mapper~Mapper#event:modelToViewPosition\n * @param {module:utils/eventinfo~EventInfo} evt Object containing information about the fired event.\n * @param {Object} data Object containing additional data and placeholder for mapping result.\n */\nfunction modelToViewPosition(evt, data) {\n\tif (data.viewPosition.parent.name == 'li' && data.modelPosition.parent.name != 'listItem') {\n\t\tdata.viewPosition = _position4.default.createBefore(data.viewPosition.parent);\n\n\t\tevt.stop();\n\t}\n}\n\n/**\n * Callback for view position to model position mapping for {@link module:engine/conversion/mapper~Mapper}. The callback fixes positions\n * between `<li>` elements, that would be incorrectly mapped because of how list items are represented in model\n * and view.\n *\n * @see module:engine/conversion/mapper~Mapper#event:viewToModelPosition\n * @param {module:utils/eventinfo~EventInfo} evt Object containing information about the fired event.\n * @param {Object} data Object containing additional data and placeholder for mapping result.\n */\nfunction viewToModelPosition(evt, data) {\n\tvar viewPosition = data.viewPosition;\n\tvar mapper = data.mapper;\n\tvar nodeAfter = viewPosition.nodeAfter;\n\tvar nodeBefore = viewPosition.nodeBefore;\n\n\tvar modelNode = void 0;\n\n\tif (nodeAfter) {\n\t\tif (nodeAfter.name == 'ul' || nodeAfter.name == 'ol') {\n\t\t\t// If the position is before view list, model position should be placed before `listItem`\n\t\t\t// that is bound to the first `<li>` of that view list.\n\t\t\t// Default algorithm would work like this but only for top-level list.\n\t\t\tmodelNode = mapper.toModelElement(nodeAfter.getChild(0));\n\t\t} else if (nodeAfter.name == 'li') {\n\t\t\t// If the position is before view list item, just place model position before bound `listItem` element.\n\t\t\tmodelNode = mapper.toModelElement(nodeAfter);\n\t\t}\n\n\t\tif (modelNode) {\n\t\t\tdata.modelPosition = _position2.default.createBefore(modelNode);\n\t\t}\n\t} else if (nodeBefore) {\n\t\tvar viewNode = void 0;\n\n\t\t// Find `<li>` after which we want to place position.\n\t\t// We want to find a `<li>` that will be mapped to model `listItem` element. That `listItem` will\n\t\t// be used as a reference point to evaluate model position.\n\t\t/* istanbul ignore if */ // Part of code connected with indenting that is not yet complete.\n\t\tif (nodeBefore.name == 'ul' || nodeBefore.name == 'ol') {\n\t\t\t// If the position is before view list, take the last `<li>` of that view list.\n\t\t\tviewNode = nodeBefore.getChild(nodeBefore.childCount - 1);\n\t\t} else if (nodeBefore.name == 'li') {\n\t\t\t// If the position is before view list item, take that `<li>`.\n\t\t\tviewNode = nodeBefore;\n\t\t}\n\n\t\t// Evaluate correct model position.\n\t\t// At this stage we have a `<li>`. This `<li>` may have nested `<li>`s inside. We will use `mapper`\n\t\t// to obtain this `<li>`'s model length. Placing model position after that `<li>` will be done\n\t\t// by placing it before the bound `listItem` and moving by offset equal to `<li>`s length.\n\t\tif (viewNode) {\n\t\t\tmodelNode = mapper.toModelElement(viewNode);\n\t\t\tvar offset = mapper.getModelLength(viewNode);\n\n\t\t\tdata.modelPosition = _position2.default.createBefore(modelNode).getShiftedBy(offset);\n\t\t}\n\t}\n\n\t// If we found a model position, stop the event.\n\tif (data.modelPosition !== null) {\n\t\tevt.stop();\n\t}\n}\n\n// Helper function that creates a `<ul><li></li></ul>` structure out of given `modelItem` model `listItem` element.\n// Then, it binds created view list item (LI) with model `listItem` element.\n// The function then returns created view list item (LI).\nfunction generateLiInUl(modelItem, mapper) {\n\tvar listType = modelItem.getAttribute('type') == 'numbered' ? 'ol' : 'ul';\n\tvar viewItem = new _viewlistitemelement2.default();\n\n\tvar viewList = new _containerelement2.default(listType, null);\n\tviewList.appendChildren(viewItem);\n\n\tmapper.bindElements(modelItem, viewItem);\n\n\treturn viewItem;\n}\n\n// Helper function that seeks for a sibling of given `modelItem` that is a `listItem` element and meets given criteria.\n// `options` object may contain one or more of given values (by default they are `false`):\n// `options.getNext` - whether next or previous siblings should be checked (default = previous)\n// `options.checkAllSiblings` - whether all siblings or just the first one should be checked (default = only one),\n// `options.sameIndent` - whether sought sibling should have same indent (default = no),\n// `options.biggerIndent` - whether sought sibling should have bigger indent (default = no).\n// Either `options.sameIndent` or `options.biggerIndent` should be set to `true`.\nfunction getSiblingListItem(modelItem, options) {\n\tvar direction = options.getNext ? 'nextSibling' : 'previousSibling';\n\tvar checkAllSiblings = !!options.checkAllSiblings;\n\tvar sameIndent = !!options.sameIndent;\n\tvar biggerIndent = !!options.biggerIndent;\n\n\tvar indent = modelItem.getAttribute('indent');\n\n\tvar item = modelItem[direction];\n\n\twhile (item && item.name == 'listItem') {\n\t\tvar itemIndent = item.getAttribute('indent');\n\n\t\tif (sameIndent && indent == itemIndent || biggerIndent && indent < itemIndent) {\n\t\t\treturn item;\n\t\t} else if (!checkAllSiblings || indent > itemIndent) {\n\t\t\treturn null;\n\t\t}\n\n\t\titem = item[direction];\n\t}\n\n\treturn null;\n}\n\n// Helper function that takes two parameters, that are expected to be view list elements, and merges them.\n// The merge happen only if both parameters are UL or OL elements.\nfunction mergeViewLists(firstList, secondList) {\n\tif (firstList && secondList && (firstList.name == 'ul' || firstList.name == 'ol') && firstList.name == secondList.name) {\n\t\t_writer2.default.mergeContainers(_position4.default.createAfter(firstList));\n\t}\n}\n\n// Helper function that takes model list item element `modelItem`, corresponding view list item element `injectedItem`\n// that is not added to the view and is inside a view list element (`ul` or `ol`) and is that's list only child.\n// The list is inserted at correct position (element breaking may be needed) and then merged with it's siblings.\n// See comments below to better understand the algorithm.\nfunction injectViewList(modelItem, injectedItem, mapper) {\n\tvar injectedList = injectedItem.parent;\n\n\t// 1. Break after previous `listItem` if it has same or bigger indent.\n\tvar prevModelItem = getSiblingListItem(modelItem, { sameIndent: true, biggerIndent: true });\n\n\tif (prevModelItem) {\n\t\tvar viewItem = mapper.toViewElement(prevModelItem);\n\t\tvar viewPosition = _position4.default.createAfter(viewItem);\n\t\t_writer2.default.breakContainer(viewPosition);\n\t}\n\n\t// 2. Break after closest previous `listItem` sibling with same indent.\n\tvar sameIndentModelItem = getSiblingListItem(modelItem, { sameIndent: true, checkAllSiblings: true });\n\t// Position between broken lists will be a place where new list is inserted.\n\t// If there is nothing to break (`sameIndentModelItem` is falsy) it means that converted list item\n\t// is (will be) the first list item.\n\tvar insertionPosition = void 0;\n\n\tif (sameIndentModelItem) {\n\t\tvar _viewItem = mapper.toViewElement(sameIndentModelItem);\n\t\tvar _viewPosition = _position4.default.createAfter(_viewItem);\n\t\tinsertionPosition = _writer2.default.breakContainer(_viewPosition);\n\t} else {\n\t\t// If there is a list item before converted list item, it means that that list item has lower indent.\n\t\t// In such case the created view list should be appended as a child of that item.\n\t\tvar prevSibling = modelItem.previousSibling;\n\n\t\tif (prevSibling && prevSibling.name == 'listItem') {\n\t\t\tinsertionPosition = _position4.default.createAt(mapper.toViewElement(prevSibling), 'end');\n\t\t} else {\n\t\t\t// This is the very first list item, use position mapping to get correct insertion position.\n\t\t\tinsertionPosition = mapper.toViewPosition(_position2.default.createBefore(modelItem));\n\t\t}\n\t}\n\n\t// 3. Append new UL/OL in position after breaking in step 2.\n\t_writer2.default.insert(insertionPosition, injectedList);\n\n\t// 4. If next sibling is list item with bigger indent, append it's UL/OL to new LI.\n\tvar nextModelItem = getSiblingListItem(modelItem, { getNext: true, biggerIndent: true });\n\tvar nextViewItem = mapper.toViewElement(nextModelItem);\n\n\t/* istanbul ignore if */ // Part of code connected with indenting that is not yet complete.\n\tif (nextViewItem) {\n\t\tvar sourceRange = _range2.default.createOn(nextViewItem.parent);\n\t\tvar targetPosition = _position4.default.createAt(injectedItem, 'end');\n\t\t_writer2.default.move(sourceRange, targetPosition);\n\t}\n\n\t// 5. Merge new UL/OL with above and below items (ULs/OLs or LIs).\n\tmergeViewLists(injectedList, injectedList.nextSibling);\n\tmergeViewLists(injectedList.previousSibling, injectedList);\n}\n\n/***/ }),\n/* 354 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _command = __webpack_require__(15);\n\nvar _command2 = _interopRequireDefault(_command);\n\nvar _utils = __webpack_require__(180);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module list/indentcommand\n */\n\n/**\n * The list indent command. It is used by the {@link module:list/list~List list feature}.\n *\n * @extends core.command.Command\n */\nvar IndentCommand = function (_Command) {\n\t_inherits(IndentCommand, _Command);\n\n\t/**\n  * Creates an instance of the command.\n  *\n  * @param {module:core/editor/editor~Editor} editor Editor instance.\n  * @param {'forward'|'backward'} indentDirection Direction of indent. If it is equal to `backward`, the command\n  * will outdent a list item.\n  */\n\tfunction IndentCommand(editor, indentDirection) {\n\t\t_classCallCheck(this, IndentCommand);\n\n\t\t/**\n   * By how much the command will change list item's indent attribute.\n   *\n   * @readonly\n   * @private\n   * @member {Number}\n   */\n\t\tvar _this = _possibleConstructorReturn(this, (IndentCommand.__proto__ || Object.getPrototypeOf(IndentCommand)).call(this, editor));\n\n\t\t_this._indentBy = indentDirection == 'forward' ? 1 : -1;\n\n\t\t// Refresh command state after selection is changed or changes has been done to the document.\n\t\t_this.listenTo(editor.document.selection, 'change:range', function () {\n\t\t\t_this.refreshState();\n\t\t});\n\n\t\t_this.listenTo(editor.document, 'changesDone', function () {\n\t\t\t_this.refreshState();\n\t\t});\n\t\treturn _this;\n\t}\n\n\t/**\n  * @inheritDoc\n  */\n\n\n\t_createClass(IndentCommand, [{\n\t\tkey: '_doExecute',\n\t\tvalue: function _doExecute() {\n\t\t\tvar _this2 = this;\n\n\t\t\tvar doc = this.editor.document;\n\t\t\tvar batch = doc.batch();\n\t\t\tvar element = (0, _utils.getClosestListItem)(doc.selection.getFirstPosition());\n\n\t\t\tdoc.enqueueChanges(function () {\n\t\t\t\tvar oldIndent = element.getAttribute('indent');\n\n\t\t\t\tvar itemsToChange = [element];\n\n\t\t\t\t// Indenting a list item should also indent all the items that are already sub-items of indented item.\n\t\t\t\tvar next = element.nextSibling;\n\n\t\t\t\t// Check all items as long as their indent is bigger than indent of changed list item.\n\t\t\t\twhile (next && next.name == 'listItem' && next.getAttribute('indent') > oldIndent) {\n\t\t\t\t\titemsToChange.push(next);\n\n\t\t\t\t\tnext = next.nextSibling;\n\t\t\t\t}\n\n\t\t\t\t// We need to be sure to keep model in correct state after each small change, because converters\n\t\t\t\t// bases on that state and assumes that model is correct.\n\t\t\t\t// Because of that, if the command outdented items, we will outdent them starting from the last item, as\n\t\t\t\t// it is safer.\n\t\t\t\tif (_this2._indentBy < 0) {\n\t\t\t\t\titemsToChange = itemsToChange.reverse();\n\t\t\t\t}\n\n\t\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\t\tvar _didIteratorError = false;\n\t\t\t\tvar _iteratorError = undefined;\n\n\t\t\t\ttry {\n\t\t\t\t\tfor (var _iterator = itemsToChange[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\t\tvar item = _step.value;\n\n\t\t\t\t\t\tvar indent = item.getAttribute('indent') + _this2._indentBy;\n\n\t\t\t\t\t\t// If indent is lower than 0, it means that the item got outdented when it was not indented.\n\t\t\t\t\t\t// This means that we need to convert that list item to paragraph.\n\t\t\t\t\t\tif (indent < 0) {\n\t\t\t\t\t\t\t// To keep the model as correct as possible, first rename listItem, then remove attributes,\n\t\t\t\t\t\t\t// as listItem without attributes is very incorrect and will cause problems in converters.\n\t\t\t\t\t\t\tbatch.rename(item, 'paragraph').removeAttribute(item, 'indent').removeAttribute(item, 'type');\n\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\t// If indent is >= 0, just change the attribute value.\n\t\t\t\t\t\t\tbatch.setAttribute(item, 'indent', indent);\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t} catch (err) {\n\t\t\t\t\t_didIteratorError = true;\n\t\t\t\t\t_iteratorError = err;\n\t\t\t\t} finally {\n\t\t\t\t\ttry {\n\t\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t\t}\n\t\t\t\t\t} finally {\n\t\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t});\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: '_checkEnabled',\n\t\tvalue: function _checkEnabled() {\n\t\t\t// Check whether any of position's ancestor is a list item.\n\t\t\tvar listItem = (0, _utils.getClosestListItem)(this.editor.document.selection.getFirstPosition());\n\n\t\t\t// If selection is not in a list item, the command is disabled.\n\t\t\tif (!listItem) {\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\tvar prev = listItem.previousSibling;\n\t\t\tvar oldIndent = listItem.getAttribute('indent');\n\t\t\tvar newIndent = oldIndent + this._indentBy;\n\n\t\t\tif (this._indentBy > 0) {\n\t\t\t\t// If we are indenting, there are some conditions to meet.\n\t\t\t\t// Cannot indent first list item.\n\t\t\t\tif (!prev || prev.name != 'listItem') {\n\t\t\t\t\treturn false;\n\t\t\t\t}\n\n\t\t\t\t// Indent can be at most greater by one than indent of previous item.\n\t\t\t\tif (prev.getAttribute('indent') + 1 < newIndent) {\n\t\t\t\t\treturn false;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// If we are outdenting it is enough to be in list item. Every list item can always be outdented.\n\t\t\treturn true;\n\t\t}\n\t}]);\n\n\treturn IndentCommand;\n}(_command2.default);\n\nexports.default = IndentCommand;\n\n/***/ }),\n/* 355 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _plugin = __webpack_require__(2);\n\nvar _plugin2 = _interopRequireDefault(_plugin);\n\nvar _listengine = __webpack_require__(179);\n\nvar _listengine2 = _interopRequireDefault(_listengine);\n\nvar _buttonview = __webpack_require__(25);\n\nvar _buttonview2 = _interopRequireDefault(_buttonview);\n\nvar _keyboard = __webpack_require__(21);\n\nvar _numberedlist = __webpack_require__(518);\n\nvar _numberedlist2 = _interopRequireDefault(_numberedlist);\n\nvar _bulletedlist = __webpack_require__(517);\n\nvar _bulletedlist2 = _interopRequireDefault(_bulletedlist);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module list/list\n */\n\n/**\n * The lists feature. It introduces the `numberedList` and `bulletedList` buttons which\n * allows to convert paragraphs to/from list items and indent/outdent them.\n *\n * See also {@link module:list/listengine~ListEngine}.\n *\n * @extends module:core/plugin~Plugin\n */\nvar List = function (_Plugin) {\n\t_inherits(List, _Plugin);\n\n\tfunction List() {\n\t\t_classCallCheck(this, List);\n\n\t\treturn _possibleConstructorReturn(this, (List.__proto__ || Object.getPrototypeOf(List)).apply(this, arguments));\n\t}\n\n\t_createClass(List, [{\n\t\tkey: 'init',\n\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tvalue: function init() {\n\t\t\tvar _this2 = this;\n\n\t\t\t// Create two buttons and link them with numberedList and bulletedList commands.\n\t\t\tvar t = this.editor.t;\n\t\t\tthis._addButton('numberedList', t('Numbered List'), _numberedlist2.default);\n\t\t\tthis._addButton('bulletedList', t('Bulleted List'), _bulletedlist2.default);\n\n\t\t\t// Overwrite default enter key behavior.\n\t\t\t// If enter key is pressed with selection collapsed in empty list item, outdent it instead of breaking it.\n\t\t\tthis.listenTo(this.editor.editing.view, 'enter', function (evt, data) {\n\t\t\t\tvar doc = _this2.editor.document;\n\t\t\t\tvar positionParent = doc.selection.getLastPosition().parent;\n\n\t\t\t\tif (doc.selection.isCollapsed && positionParent.name == 'listItem' && positionParent.isEmpty) {\n\t\t\t\t\t_this2.editor.execute('outdentList');\n\n\t\t\t\t\tdata.preventDefault();\n\t\t\t\t\tevt.stop();\n\t\t\t\t}\n\t\t\t});\n\n\t\t\t// Add tab key support.\n\t\t\t// When in list item, pressing tab should indent list item, if possible.\n\t\t\t// Pressing shift + tab shout outdent list item.\n\t\t\tthis.listenTo(this.editor.editing.view, 'keydown', function (evt, data) {\n\t\t\t\tvar commandName = null;\n\n\t\t\t\tif (data.keystroke == (0, _keyboard.parseKeystroke)('tab')) {\n\t\t\t\t\tcommandName = 'indentList';\n\t\t\t\t} else if (data.keystroke == (0, _keyboard.parseKeystroke)('Shift+tab')) {\n\t\t\t\t\tcommandName = 'outdentList';\n\t\t\t\t}\n\n\t\t\t\tif (commandName) {\n\t\t\t\t\tvar command = _this2.editor.commands.get(commandName);\n\n\t\t\t\t\tif (command.isEnabled) {\n\t\t\t\t\t\t_this2.editor.execute(commandName);\n\n\t\t\t\t\t\tdata.preventDefault();\n\t\t\t\t\t\tevt.stop();\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t});\n\t\t}\n\n\t\t/**\n   * Helper method for initializing a button and linking it with an appropriate command.\n   *\n   * @private\n   * @param {String} commandName Name of the command.\n   * @param {Object} label Button label.\n   * @param {String} icon Source of the icon.\n   */\n\n\t}, {\n\t\tkey: '_addButton',\n\t\tvalue: function _addButton(commandName, label, icon) {\n\t\t\tvar _this3 = this;\n\n\t\t\tvar editor = this.editor;\n\t\t\tvar command = editor.commands.get(commandName);\n\n\t\t\teditor.ui.componentFactory.add(commandName, function (locale) {\n\t\t\t\tvar buttonView = new _buttonview2.default(locale);\n\n\t\t\t\tbuttonView.set({\n\t\t\t\t\tlabel: label,\n\t\t\t\t\ticon: icon,\n\t\t\t\t\ttooltip: true\n\t\t\t\t});\n\n\t\t\t\t// Bind button model to command.\n\t\t\t\tbuttonView.bind('isOn', 'isEnabled').to(command, 'value', 'isEnabled');\n\n\t\t\t\t// Execute command.\n\t\t\t\t_this3.listenTo(buttonView, 'execute', function () {\n\t\t\t\t\treturn editor.execute(commandName);\n\t\t\t\t});\n\n\t\t\t\treturn buttonView;\n\t\t\t});\n\t\t}\n\t}], [{\n\t\tkey: 'requires',\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tget: function get() {\n\t\t\treturn [_listengine2.default];\n\t\t}\n\t}]);\n\n\treturn List;\n}(_plugin2.default);\n\nexports.default = List;\n\n/***/ }),\n/* 356 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _command = __webpack_require__(15);\n\nvar _command2 = _interopRequireDefault(_command);\n\nvar _position = __webpack_require__(1);\n\nvar _position2 = _interopRequireDefault(_position);\n\nvar _utils = __webpack_require__(180);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module list/listcommand\n */\n\n/**\n * The list command. It is used by the {@link module:list/list~List list feature}.\n *\n * @extends module:core/command/command~Command\n */\nvar ListCommand = function (_Command) {\n\t_inherits(ListCommand, _Command);\n\n\t/**\n  * Creates an instance of the command.\n  *\n  * @param {module:core/editor/editor~Editor} editor Editor instance.\n  * @param {'numbered'|'bulleted'} type List type that will be handled by this command.\n  */\n\tfunction ListCommand(editor, type) {\n\t\t_classCallCheck(this, ListCommand);\n\n\t\t/**\n   * The type of list created by the command.\n   *\n   * @readonly\n   * @member {'numbered'|'bulleted'}\n   */\n\t\tvar _this = _possibleConstructorReturn(this, (ListCommand.__proto__ || Object.getPrototypeOf(ListCommand)).call(this, editor));\n\n\t\t_this.type = type == 'bulleted' ? 'bulleted' : 'numbered';\n\n\t\t/**\n   * Flag indicating whether the command is active, which means that selection starts in a list of the same type.\n   *\n   * @observable\n   * @member {Boolean}\n   */\n\t\t_this.set('value', false);\n\n\t\tvar changeCallback = function changeCallback() {\n\t\t\t_this.refreshValue();\n\t\t\t_this.refreshState();\n\t\t};\n\n\t\t// Listen on selection and document changes and set the current command's value.\n\t\t_this.listenTo(editor.document.selection, 'change:range', changeCallback);\n\t\t_this.listenTo(editor.document, 'changesDone', changeCallback);\n\t\treturn _this;\n\t}\n\n\t/**\n  * Sets command's value based on the document selection.\n  */\n\n\n\t_createClass(ListCommand, [{\n\t\tkey: 'refreshValue',\n\t\tvalue: function refreshValue() {\n\t\t\tvar position = this.editor.document.selection.getFirstPosition();\n\n\t\t\t// Check whether closest `listItem` ancestor of the position has a correct type.\n\t\t\tvar listItem = (0, _utils.getClosestListItem)(position);\n\t\t\tthis.value = listItem !== null && listItem.getAttribute('type') == this.type;\n\t\t}\n\n\t\t/**\n   * Executes command.\n   *\n   * @protected\n   * @param {Object} [options] Options for executed command.\n   * @param {module:engine/model/batch~Batch} [options.batch] Batch to collect all the change steps.\n   * New batch will be created if this option is not set.\n   */\n\n\t}, {\n\t\tkey: '_doExecute',\n\t\tvalue: function _doExecute() {\n\t\t\tvar _this2 = this;\n\n\t\t\tvar options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n\n\t\t\tvar document = this.editor.document;\n\t\t\tvar blocks = Array.from(document.selection.getSelectedBlocks());\n\n\t\t\t// Whether we are turning off some items.\n\t\t\tvar turnOff = this.value === true;\n\t\t\t// If we are turning off items, we are going to rename them to paragraphs.\n\n\t\t\tdocument.enqueueChanges(function () {\n\t\t\t\tvar batch = options.batch || document.batch();\n\n\t\t\t\t// If part of a list got turned off, we need to handle (outdent) all of sub-items of the last turned-off item.\n\t\t\t\t// To be sure that model is all the time in a good state, we first fix items below turned-off item.\n\t\t\t\tif (turnOff) {\n\t\t\t\t\t// Start from the model item that is just after the last turned-off item.\n\t\t\t\t\tvar next = blocks[blocks.length - 1].nextSibling;\n\t\t\t\t\tvar currentIndent = Number.POSITIVE_INFINITY;\n\t\t\t\t\tvar changes = [];\n\n\t\t\t\t\t// Correct indent of all items after the last turned off item.\n\t\t\t\t\t// Rules that should be followed:\n\t\t\t\t\t// 1. All direct sub-items of turned-off item should become indent 0, because the first item after it\n\t\t\t\t\t//    will be the first item of a new list. Other items are at the same level, so should have same 0 index.\n\t\t\t\t\t// 2. All items with indent lower than indent of turned-off item should become indent 0, because they\n\t\t\t\t\t//    should not end up as a child of any of list items that they were not children of before.\n\t\t\t\t\t// 3. All other items should have their indent changed relatively to it's parent.\n\t\t\t\t\t//\n\t\t\t\t\t// For example:\n\t\t\t\t\t// 1  * --------\n\t\t\t\t\t// 2     * --------\n\t\t\t\t\t// 3        * -------- <- this is turned off.\n\t\t\t\t\t// 4           * -------- <- this has to become indent = 0, because it will be first item on a new list.\n\t\t\t\t\t// 5              * -------- <- this should be still be a child of item above, so indent = 1.\n\t\t\t\t\t// 6        * -------- <- this also has to become indent = 0, because it shouldn't end up as a child of any of items above.\n\t\t\t\t\t// 7           * -------- <- this should be still be a child of item above, so indent = 1.\n\t\t\t\t\t// 8     * -------- <- this has to become indent = 0.\n\t\t\t\t\t// 9        * -------- <- this should still be a child of item above, so indent = 1.\n\t\t\t\t\t// 10          * -------- <- this should still be a child of item above, so indent = 2.\n\t\t\t\t\t// 11          * -------- <- this should still be at the same level as item above, so indent = 2.\n\t\t\t\t\t// 12 * -------- <- this and all below are left unchanged.\n\t\t\t\t\t// 13    * --------\n\t\t\t\t\t// 14       * --------\n\t\t\t\t\t//\n\t\t\t\t\t// After turning off 3 the list becomes:\n\t\t\t\t\t//\n\t\t\t\t\t// 1  * --------\n\t\t\t\t\t// 2     * --------\n\t\t\t\t\t//\n\t\t\t\t\t// 3  --------\n\t\t\t\t\t//\n\t\t\t\t\t// 4  * --------\n\t\t\t\t\t// 5     * --------\n\t\t\t\t\t// 6  * --------\n\t\t\t\t\t// 7     * --------\n\t\t\t\t\t// 8  * --------\n\t\t\t\t\t// 9     * --------\n\t\t\t\t\t// 10       * --------\n\t\t\t\t\t// 11       * --------\n\t\t\t\t\t// 12 * --------\n\t\t\t\t\t// 13    * --------\n\t\t\t\t\t// 14       * --------\n\t\t\t\t\t//\n\t\t\t\t\t// Thanks to this algorithm no lists are mismatched and no items get unexpected children/parent, while\n\t\t\t\t\t// those parent-child connection which are possible to maintain are still maintained. It's worth noting\n\t\t\t\t\t// that this is the same effect that we would be get by multiple use of outdent command. However doing\n\t\t\t\t\t// it like this is much more efficient because it's less operation (less memory usage, easier OT) and\n\t\t\t\t\t// less conversion (faster).\n\t\t\t\t\twhile (next && next.name == 'listItem' && next.getAttribute('indent') !== 0) {\n\t\t\t\t\t\t// Check each next list item, as long as its indent is bigger than 0.\n\t\t\t\t\t\t// If the indent is 0 we are not going to change anything anyway.\n\t\t\t\t\t\tvar indent = next.getAttribute('indent');\n\n\t\t\t\t\t\t// We check if that's item indent is lower as current relative indent.\n\t\t\t\t\t\tif (indent < currentIndent) {\n\t\t\t\t\t\t\t// If it is, current relative indent becomes that indent.\n\t\t\t\t\t\t\tcurrentIndent = indent;\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\t// Fix indent relatively to current relative indent.\n\t\t\t\t\t\t// Note, that if we just changed the current relative indent, the newIndent will be equal to 0.\n\t\t\t\t\t\tvar newIndent = indent - currentIndent;\n\n\t\t\t\t\t\t// Save the entry in changes array. We do not apply it at the moment, because we will need to\n\t\t\t\t\t\t// reverse the changes so the last item is changed first.\n\t\t\t\t\t\t// This is to keep model in correct state all the time.\n\t\t\t\t\t\tchanges.push({ element: next, indent: newIndent });\n\n\t\t\t\t\t\t// Find next item.\n\t\t\t\t\t\tnext = next.nextSibling;\n\t\t\t\t\t}\n\n\t\t\t\t\tchanges = changes.reverse();\n\n\t\t\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\t\t\tvar _didIteratorError = false;\n\t\t\t\t\tvar _iteratorError = undefined;\n\n\t\t\t\t\ttry {\n\t\t\t\t\t\tfor (var _iterator = changes[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\t\t\tvar item = _step.value;\n\n\t\t\t\t\t\t\tbatch.setAttribute(item.element, 'indent', item.indent);\n\t\t\t\t\t\t}\n\t\t\t\t\t} catch (err) {\n\t\t\t\t\t\t_didIteratorError = true;\n\t\t\t\t\t\t_iteratorError = err;\n\t\t\t\t\t} finally {\n\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} finally {\n\t\t\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\t// Phew! Now it will be easier :).\n\t\t\t\t// For each block element that was in the selection, we will either: turn it to list item,\n\t\t\t\t// turn it to paragraph, or change it's type. Or leave it as it is.\n\t\t\t\tvar _iteratorNormalCompletion2 = true;\n\t\t\t\tvar _didIteratorError2 = false;\n\t\t\t\tvar _iteratorError2 = undefined;\n\n\t\t\t\ttry {\n\t\t\t\t\tfor (var _iterator2 = blocks[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {\n\t\t\t\t\t\tvar element = _step2.value;\n\n\t\t\t\t\t\tif (turnOff && element.name == 'listItem') {\n\t\t\t\t\t\t\t// We are turning off and the element is a `listItem` - it should be converted to `paragraph`.\n\t\t\t\t\t\t\t// The order is important to keep model in correct state.\n\t\t\t\t\t\t\tbatch.rename(element, 'paragraph').removeAttribute(element, 'type').removeAttribute(element, 'indent');\n\t\t\t\t\t\t} else if (!turnOff && element.name != 'listItem') {\n\t\t\t\t\t\t\t// We are turning on and the element is not a `listItem` - it should be converted to `listItem`.\n\t\t\t\t\t\t\t// The order is important to keep model in correct state.\n\t\t\t\t\t\t\tbatch.setAttribute(element, 'type', _this2.type).setAttribute(element, 'indent', 0).rename(element, 'listItem');\n\t\t\t\t\t\t} else if (!turnOff && element.name == 'listItem' && element.getAttribute('type') != _this2.type) {\n\t\t\t\t\t\t\t// We are turning on and the element is a `listItem` but has different type - change type.\n\t\t\t\t\t\t\tbatch.setAttribute(element, 'type', _this2.type);\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t} catch (err) {\n\t\t\t\t\t_didIteratorError2 = true;\n\t\t\t\t\t_iteratorError2 = err;\n\t\t\t\t} finally {\n\t\t\t\t\ttry {\n\t\t\t\t\t\tif (!_iteratorNormalCompletion2 && _iterator2.return) {\n\t\t\t\t\t\t\t_iterator2.return();\n\t\t\t\t\t\t}\n\t\t\t\t\t} finally {\n\t\t\t\t\t\tif (_didIteratorError2) {\n\t\t\t\t\t\t\tthrow _iteratorError2;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t});\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: '_checkEnabled',\n\t\tvalue: function _checkEnabled() {\n\t\t\t// If command is enabled it means that we are in list item, so the command should be enabled.\n\t\t\tif (this.value) {\n\t\t\t\treturn true;\n\t\t\t}\n\n\t\t\tvar selection = this.editor.document.selection;\n\t\t\tvar schema = this.editor.document.schema;\n\n\t\t\tvar firstBlock = selection.getSelectedBlocks().next().value;\n\n\t\t\tif (!firstBlock) {\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\t// Otherwise, check if list item can be inserted at the position start.\n\t\t\treturn schema.check({\n\t\t\t\tname: 'listItem',\n\t\t\t\tattributes: ['type', 'indent'],\n\t\t\t\tinside: _position2.default.createBefore(firstBlock)\n\t\t\t});\n\t\t}\n\t}]);\n\n\treturn ListCommand;\n}(_command2.default);\n\nexports.default = ListCommand;\n\n/***/ }),\n/* 357 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _containerelement = __webpack_require__(39);\n\nvar _containerelement2 = _interopRequireDefault(_containerelement);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module list/viewlistitemelement\n */\n\n/**\n * View element class representing list item (`<li>`). It extends {@link module:engine/view/containerelement~ContainerElement}\n * and overwrites {@link module:list/viewlistitemelement~ViewListItemElement#getFillerOffset evaluating whether filler offset}\n * is needed.\n *\n * @extends module:engine/view/containerelement~ContainerElement\n */\nvar ViewListItemElement = function (_ViewContainerElement) {\n\t_inherits(ViewListItemElement, _ViewContainerElement);\n\n\t/**\n  * Creates `<li>` view item.\n  *\n  * @param {Object|Iterable} [attrs] Collection of attributes.\n  * @param {module:engine/view/node~Node|Iterable.<module:engine/view/node~Node>} [children] List of nodes to be inserted\n  * into created element.\n  */\n\tfunction ViewListItemElement(attrs, children) {\n\t\t_classCallCheck(this, ViewListItemElement);\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tvar _this = _possibleConstructorReturn(this, (ViewListItemElement.__proto__ || Object.getPrototypeOf(ViewListItemElement)).call(this, 'li', attrs, children));\n\n\t\t_this.getFillerOffset = getFillerOffset;\n\t\treturn _this;\n\t}\n\n\treturn ViewListItemElement;\n}(_containerelement2.default);\n\n// Implementation of getFillerOffset for ViewListItemElements.\n//\n// @returns {Number|null} Block filler offset or `null` if block filler is not needed.\n\n\nexports.default = ViewListItemElement;\nfunction getFillerOffset() {\n\t/*jshint validthis:true */\n\tvar hasOnlyLists = !this.isEmpty && (this.getChild(0).name == 'ul' || this.getChild(0).name == 'ol');\n\n\treturn this.isEmpty || hasOnlyLists ? 0 : null;\n}\n\n/***/ }),\n/* 358 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _plugin = __webpack_require__(2);\n\nvar _plugin2 = _interopRequireDefault(_plugin);\n\nvar _essentials = __webpack_require__(359);\n\nvar _essentials2 = _interopRequireDefault(_essentials);\n\nvar _paragraph = __webpack_require__(181);\n\nvar _paragraph2 = _interopRequireDefault(_paragraph);\n\nvar _bold = __webpack_require__(284);\n\nvar _bold2 = _interopRequireDefault(_bold);\n\nvar _heading = __webpack_require__(332);\n\nvar _heading2 = _interopRequireDefault(_heading);\n\nvar _image = __webpack_require__(334);\n\nvar _image2 = _interopRequireDefault(_image);\n\nvar _imagecaption = __webpack_require__(336);\n\nvar _imagecaption2 = _interopRequireDefault(_imagecaption);\n\nvar _imagestyle = __webpack_require__(339);\n\nvar _imagestyle2 = _interopRequireDefault(_imagestyle);\n\nvar _imagetoolbar = __webpack_require__(175);\n\nvar _imagetoolbar2 = _interopRequireDefault(_imagetoolbar);\n\nvar _italic = __webpack_require__(285);\n\nvar _italic2 = _interopRequireDefault(_italic);\n\nvar _link = __webpack_require__(348);\n\nvar _link2 = _interopRequireDefault(_link);\n\nvar _list = __webpack_require__(355);\n\nvar _list2 = _interopRequireDefault(_list);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module presets/article\n */\n\n/**\n * Article editor preset. Represents a set of features which enable in the editor\n * all functionalities of a simple article editor.\n * This preset follows [Editor Recommendations](https://github.com/ckeditor/editor-recommendations).\n *\n * @extends module:core/plugin~Plugin\n */\nvar Article = function (_Plugin) {\n  _inherits(Article, _Plugin);\n\n  function Article() {\n    _classCallCheck(this, Article);\n\n    return _possibleConstructorReturn(this, (Article.__proto__ || Object.getPrototypeOf(Article)).apply(this, arguments));\n  }\n\n  _createClass(Article, null, [{\n    key: 'requires',\n    get: function get() {\n      return [_essentials2.default, _paragraph2.default, _bold2.default, _heading2.default, _image2.default, _imagecaption2.default, _imagestyle2.default, _imagetoolbar2.default, _italic2.default, _link2.default, _list2.default];\n    }\n  }]);\n\n  return Article;\n}(_plugin2.default);\n\nexports.default = Article;\n\n/***/ }),\n/* 359 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _plugin = __webpack_require__(2);\n\nvar _plugin2 = _interopRequireDefault(_plugin);\n\nvar _clipboard = __webpack_require__(286);\n\nvar _clipboard2 = _interopRequireDefault(_clipboard);\n\nvar _enter = __webpack_require__(329);\n\nvar _enter2 = _interopRequireDefault(_enter);\n\nvar _typing = __webpack_require__(365);\n\nvar _typing2 = _interopRequireDefault(_typing);\n\nvar _undo = __webpack_require__(384);\n\nvar _undo2 = _interopRequireDefault(_undo);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module presets/essentials\n */\n\n/**\n * Essential editing features preset. Represents a set of features which enable in the editor\n * similar functionalities to a `<textarea>`.\n *\n * It includes: {@link module:clipboard/clipboard~Clipboard}, {@link module:enter/enter~Enter},\n * {@link module:typing/typing~Typing}, {@link module:undo/undo~Undo}.\n *\n * This preset does not define any block-level containers (such as {@link module:paragraph/paragraph~Paragraph}).\n * If your editor is supposed to handle block content, make sure to include it. You can also inlcude\n * the {@link module:presets/article~Article article preset}.\n *\n * @extends module:core/plugin~Plugin\n */\nvar Essentials = function (_Plugin) {\n  _inherits(Essentials, _Plugin);\n\n  function Essentials() {\n    _classCallCheck(this, Essentials);\n\n    return _possibleConstructorReturn(this, (Essentials.__proto__ || Object.getPrototypeOf(Essentials)).apply(this, arguments));\n  }\n\n  _createClass(Essentials, null, [{\n    key: 'requires',\n    get: function get() {\n      return [_clipboard2.default, _enter2.default, _typing2.default, _undo2.default];\n    }\n  }]);\n\n  return Essentials;\n}(_plugin2.default);\n\nexports.default = Essentials;\n\n/***/ }),\n/* 360 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _plugin = __webpack_require__(2);\n\nvar _plugin2 = _interopRequireDefault(_plugin);\n\nvar _deletecommand = __webpack_require__(361);\n\nvar _deletecommand2 = _interopRequireDefault(_deletecommand);\n\nvar _deleteobserver = __webpack_require__(362);\n\nvar _deleteobserver2 = _interopRequireDefault(_deleteobserver);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module typing/delete\n */\n\n/**\n * The delete and backspace feature. Handles the <kbd>Delete</kbd> and <kbd>Backspace</kbd> keys in the editor.\n *\n * @extends core.Plugin\n */\nvar Delete = function (_Plugin) {\n\t_inherits(Delete, _Plugin);\n\n\tfunction Delete() {\n\t\t_classCallCheck(this, Delete);\n\n\t\treturn _possibleConstructorReturn(this, (Delete.__proto__ || Object.getPrototypeOf(Delete)).apply(this, arguments));\n\t}\n\n\t_createClass(Delete, [{\n\t\tkey: 'init',\n\t\tvalue: function init() {\n\t\t\tvar editor = this.editor;\n\t\t\tvar editingView = editor.editing.view;\n\n\t\t\teditingView.addObserver(_deleteobserver2.default);\n\n\t\t\teditor.commands.set('forwardDelete', new _deletecommand2.default(editor, 'forward'));\n\t\t\teditor.commands.set('delete', new _deletecommand2.default(editor, 'backward'));\n\n\t\t\tthis.listenTo(editingView, 'delete', function (evt, data) {\n\t\t\t\teditor.execute(data.direction == 'forward' ? 'forwardDelete' : 'delete', { unit: data.unit });\n\t\t\t\tdata.preventDefault();\n\t\t\t});\n\t\t}\n\t}]);\n\n\treturn Delete;\n}(_plugin2.default);\n\nexports.default = Delete;\n\n/***/ }),\n/* 361 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _command = __webpack_require__(15);\n\nvar _command2 = _interopRequireDefault(_command);\n\nvar _selection = __webpack_require__(72);\n\nvar _selection2 = _interopRequireDefault(_selection);\n\nvar _changebuffer = __webpack_require__(182);\n\nvar _changebuffer2 = _interopRequireDefault(_changebuffer);\n\nvar _count = __webpack_require__(190);\n\nvar _count2 = _interopRequireDefault(_count);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module typing/deletecommand\n */\n\n/**\n * The delete command. Used by the {@link module:typing/delete~Delete delete feature} to handle the <kbd>Delete</kbd> and\n * <kbd>Backspace</kbd> keys.\n *\n * @extends core.command.Command\n */\nvar DeleteCommand = function (_Command) {\n\t_inherits(DeleteCommand, _Command);\n\n\t/**\n  * Creates an instance of the command.\n  *\n  * @param {module:core/editor/editor~Editor} editor\n  * @param {'forward'|'backward'} direction The directionality of the delete describing in what direction it\n  * should consume the content when the selection is collapsed.\n  */\n\tfunction DeleteCommand(editor, direction) {\n\t\t_classCallCheck(this, DeleteCommand);\n\n\t\t/**\n   * The directionality of the delete describing in what direction it should\n   * consume the content when the selection is collapsed.\n   *\n   * @readonly\n   * @member {'forward'|'backward'} #direction\n   */\n\t\tvar _this = _possibleConstructorReturn(this, (DeleteCommand.__proto__ || Object.getPrototypeOf(DeleteCommand)).call(this, editor));\n\n\t\t_this.direction = direction;\n\n\t\t/**\n   * Delete's change buffer used to group subsequent changes into batches.\n   *\n   * @readonly\n   * @private\n   * @member {typing.ChangeBuffer} #buffer\n   */\n\t\t_this._buffer = new _changebuffer2.default(editor.document, editor.config.get('undo.step'));\n\t\treturn _this;\n\t}\n\n\t/**\n  * Executes the delete command. Depending on whether the selection is collapsed or not, deletes its content\n  * or a piece of content in the {@link #direction defined direction}.\n  *\n  * @param {Object} [options] The command options.\n  * @param {'character'} [options.unit='character'] See {@link module:engine/controller/modifyselection~modifySelection}'s\n  * options.\n  */\n\n\n\t_createClass(DeleteCommand, [{\n\t\tkey: '_doExecute',\n\t\tvalue: function _doExecute() {\n\t\t\tvar _this2 = this;\n\n\t\t\tvar options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n\n\t\t\tvar doc = this.editor.document;\n\t\t\tvar dataController = this.editor.data;\n\n\t\t\tdoc.enqueueChanges(function () {\n\t\t\t\tvar selection = _selection2.default.createFromSelection(doc.selection);\n\n\t\t\t\t// Try to extend the selection in the specified direction.\n\t\t\t\tif (selection.isCollapsed) {\n\t\t\t\t\tdataController.modifySelection(selection, { direction: _this2.direction, unit: options.unit });\n\t\t\t\t}\n\n\t\t\t\t// If selection is still collapsed, then there's nothing to delete.\n\t\t\t\tif (selection.isCollapsed) {\n\t\t\t\t\treturn;\n\t\t\t\t}\n\n\t\t\t\tvar changeCount = 0;\n\n\t\t\t\tselection.getFirstRange().getMinimalFlatRanges().forEach(function (range) {\n\t\t\t\t\tchangeCount += (0, _count2.default)(range.getWalker({ singleCharacters: true, ignoreElementEnd: true, shallow: true }));\n\t\t\t\t});\n\n\t\t\t\tdataController.deleteContent(selection, _this2._buffer.batch, { merge: true });\n\t\t\t\t_this2._buffer.input(changeCount);\n\n\t\t\t\tdoc.selection.setRanges(selection.getRanges(), selection.isBackward);\n\t\t\t});\n\t\t}\n\t}]);\n\n\treturn DeleteCommand;\n}(_command2.default);\n\nexports.default = DeleteCommand;\n\n/***/ }),\n/* 362 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _observer = __webpack_require__(47);\n\nvar _observer2 = _interopRequireDefault(_observer);\n\nvar _domeventdata = __webpack_require__(118);\n\nvar _domeventdata2 = _interopRequireDefault(_domeventdata);\n\nvar _keyboard = __webpack_require__(21);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module typing/deleteobserver\n */\n\n/**\n * Delete observer introduces the {@link module:engine/view/document~Document#event:delete} event.\n *\n * @extends engine.view.observer.Observer\n */\nvar DeleteObserver = function (_Observer) {\n\t_inherits(DeleteObserver, _Observer);\n\n\tfunction DeleteObserver(document) {\n\t\t_classCallCheck(this, DeleteObserver);\n\n\t\tvar _this = _possibleConstructorReturn(this, (DeleteObserver.__proto__ || Object.getPrototypeOf(DeleteObserver)).call(this, document));\n\n\t\tdocument.on('keydown', function (evt, data) {\n\t\t\tvar deleteData = {};\n\n\t\t\tif (data.keyCode == _keyboard.keyCodes.delete) {\n\t\t\t\tdeleteData.direction = 'forward';\n\t\t\t\tdeleteData.unit = 'character';\n\t\t\t} else if (data.keyCode == _keyboard.keyCodes.backspace) {\n\t\t\t\tdeleteData.direction = 'backward';\n\t\t\t\tdeleteData.unit = 'codePoint';\n\t\t\t} else {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tdeleteData.unit = data.altKey ? 'word' : deleteData.unit;\n\n\t\t\tdocument.fire('delete', new _domeventdata2.default(document, data.domEvent, deleteData));\n\t\t});\n\t\treturn _this;\n\t}\n\n\t/**\n  * @inheritDoc\n  */\n\n\n\t_createClass(DeleteObserver, [{\n\t\tkey: 'observe',\n\t\tvalue: function observe() {}\n\t}]);\n\n\treturn DeleteObserver;\n}(_observer2.default);\n\n/**\n * Event fired when the user tries to delete content (e.g. presses <kbd>Delete</kbd> or <kbd>Backspace</kbd>).\n *\n * Note: This event is fired by the {@link module:typing/deleteobserver~DeleteObserver observer}\n * (usually registered by the {@link module:typing/delete~Delete delete feature}).\n *\n * @event module:engine/view/document~Document#event:delete\n * @param {module:engine/view/observer/domeventdata~DomEventData} data\n * @param {'forward'|'delete'} data.direction The direction in which the deletion should happen.\n * @param {'character'|'word'} data.unit The \"amount\" of content that should be deleted.\n */\n\n\nexports.default = DeleteObserver;\n\n/***/ }),\n/* 363 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _plugin = __webpack_require__(2);\n\nvar _plugin2 = _interopRequireDefault(_plugin);\n\nvar _range = __webpack_require__(3);\n\nvar _range2 = _interopRequireDefault(_range);\n\nvar _position = __webpack_require__(24);\n\nvar _position2 = _interopRequireDefault(_position);\n\nvar _text = __webpack_require__(29);\n\nvar _text2 = _interopRequireDefault(_text);\n\nvar _diff = __webpack_require__(191);\n\nvar _diff2 = _interopRequireDefault(_diff);\n\nvar _difftochanges = __webpack_require__(388);\n\nvar _difftochanges2 = _interopRequireDefault(_difftochanges);\n\nvar _keyboard = __webpack_require__(21);\n\nvar _inputcommand = __webpack_require__(364);\n\nvar _inputcommand2 = _interopRequireDefault(_inputcommand);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module typing/input\n */\n\n/**\n * Handles text input coming from the keyboard or other input methods.\n *\n * @extends module:core/plugin~Plugin\n */\nvar Input = function (_Plugin) {\n\t_inherits(Input, _Plugin);\n\n\tfunction Input() {\n\t\t_classCallCheck(this, Input);\n\n\t\treturn _possibleConstructorReturn(this, (Input.__proto__ || Object.getPrototypeOf(Input)).apply(this, arguments));\n\t}\n\n\t_createClass(Input, [{\n\t\tkey: 'init',\n\n\t\t/**\n   * @inheritDoc\n   */\n\t\tvalue: function init() {\n\t\t\tvar _this2 = this;\n\n\t\t\tvar editor = this.editor;\n\t\t\tvar editingView = editor.editing.view;\n\t\t\tvar inputCommand = new _inputcommand2.default(editor, editor.config.get('typing.undoStep') || 20);\n\n\t\t\t// TODO The above default configuration value should be defined using editor.config.define() once it's fixed.\n\n\t\t\teditor.commands.set('input', inputCommand);\n\n\t\t\tthis.listenTo(editingView, 'keydown', function (evt, data) {\n\t\t\t\t_this2._handleKeydown(data, inputCommand.buffer);\n\t\t\t}, { priority: 'lowest' });\n\n\t\t\tthis.listenTo(editingView, 'mutations', function (evt, mutations, viewSelection) {\n\t\t\t\t_this2._handleMutations(mutations, viewSelection);\n\t\t\t});\n\t\t}\n\n\t\t/**\n   * Handles the keydown event. We need to guess whether such keystroke is going to result\n   * in typing. If so, then before character insertion happens, any selected content needs\n   * to be deleted. Otherwise the default browser deletion mechanism would be\n   * triggered, resulting in:\n   *\n   * * Hundreds of mutations which could not be handled.\n   * * But most importantly, loss of control over how the content is being deleted.\n   *\n   * The method is used in a low-priority listener, hence allowing other listeners (e.g. delete or enter features)\n   * to handle the event.\n   *\n   * @private\n   * @param {module:engine/view/observer/keyobserver~KeyEventData} evtData\n   * @param {module:typing/changebuffer~ChangeBuffer} buffer\n   */\n\n\t}, {\n\t\tkey: '_handleKeydown',\n\t\tvalue: function _handleKeydown(evtData, buffer) {\n\t\t\tvar _this3 = this;\n\n\t\t\tvar doc = this.editor.document;\n\n\t\t\tif (isSafeKeystroke(evtData) || doc.selection.isCollapsed) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tdoc.enqueueChanges(function () {\n\t\t\t\t_this3.editor.data.deleteContent(doc.selection, buffer.batch);\n\t\t\t});\n\t\t}\n\n\t\t/**\n   * Handles DOM mutations.\n   *\n   * @private\n   * @param {Array.<module:engine/view/document~MutatatedText|module:engine/view/document~MutatatedChildren>} mutations\n   * @param {module:engine/view/selection~Selection|null} viewSelection\n   */\n\n\t}, {\n\t\tkey: '_handleMutations',\n\t\tvalue: function _handleMutations(mutations, viewSelection) {\n\t\t\tnew MutationHandler(this.editor).handle(mutations, viewSelection);\n\t\t}\n\t}]);\n\n\treturn Input;\n}(_plugin2.default);\n\n/**\n * Helper class for translating DOM mutations into model changes.\n *\n * @private\n */\n\n\nexports.default = Input;\n\nvar MutationHandler = function () {\n\t/**\n  * Creates an instance of the mutation handler.\n  *\n  * @param {module:core/editor/editor~Editor} editor\n  */\n\tfunction MutationHandler(editor) {\n\t\t_classCallCheck(this, MutationHandler);\n\n\t\t/**\n   * Editor instance for which mutations are handled.\n   *\n   * @readonly\n   * @member {module:core/editor/editor~Editor} #editor\n   */\n\t\tthis.editor = editor;\n\n\t\t/**\n   * The editing controller.\n   *\n   * @readonly\n   * @member {module:engine/controller/editingcontroller~EditingController} #editing\n   */\n\t\tthis.editing = this.editor.editing;\n\t}\n\n\t/**\n  * Handles given mutations.\n  *\n  * @param {Array.<module:engine/view/observer/mutationobserver~MutatedText|\n  * module:engine/view/observer/mutationobserver~MutatatedChildren>} mutations\n  * @param {module:engine/view/selection~Selection|null} viewSelection\n  */\n\n\n\t_createClass(MutationHandler, [{\n\t\tkey: 'handle',\n\t\tvalue: function handle(mutations, viewSelection) {\n\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\tvar _didIteratorError = false;\n\t\t\tvar _iteratorError = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator = mutations[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\tvar mutation = _step.value;\n\n\t\t\t\t\t// Fortunately it will never be both.\n\t\t\t\t\tthis._handleTextMutation(mutation, viewSelection);\n\t\t\t\t\tthis._handleTextNodeInsertion(mutation);\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError = true;\n\t\t\t\t_iteratorError = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}, {\n\t\tkey: '_handleTextMutation',\n\t\tvalue: function _handleTextMutation(mutation, viewSelection) {\n\t\t\tif (mutation.type != 'text') {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// Replace &nbsp; inserted by the browser with normal space.\n\t\t\t// We want only normal spaces in the model and in the view. Renderer and DOM Converter will be then responsible\n\t\t\t// for rendering consecutive spaces using &nbsp;, but the model and the view has to be clear.\n\t\t\t// Other feature may introduce inserting non-breakable space on specific key stroke (for example shift + space).\n\t\t\t// However then it will be handled outside of mutations, like enter key is.\n\t\t\t// The replacing is here because it has to be done before `diff` and `diffToChanges` functions, as they\n\t\t\t// take `newText` and compare it to (cleaned up) view.\n\t\t\t// It could also be done in mutation observer too, however if any outside plugin would like to\n\t\t\t// introduce additional events for mutations, they would get already cleaned up version (this may be good or not).\n\t\t\tvar newText = mutation.newText.replace(/\\u00A0/g, ' ');\n\t\t\t// To have correct `diffResult`, we also compare view node text data with &nbsp; replaced by space.\n\t\t\tvar oldText = mutation.oldText.replace(/\\u00A0/g, ' ');\n\n\t\t\tvar diffResult = (0, _diff2.default)(oldText, newText);\n\n\t\t\t// Index where the first change happens. Used to set the position from which nodes will be removed and where will be inserted.\n\t\t\tvar firstChangeAt = null;\n\t\t\t// Index where the last change happens. Used to properly count how many characters have to be removed and inserted.\n\t\t\tvar lastChangeAt = null;\n\n\t\t\t// Get `firstChangeAt` and `lastChangeAt`.\n\t\t\tfor (var i = 0; i < diffResult.length; i++) {\n\t\t\t\tvar change = diffResult[i];\n\n\t\t\t\tif (change != 'equal') {\n\t\t\t\t\tfirstChangeAt = firstChangeAt === null ? i : firstChangeAt;\n\t\t\t\t\tlastChangeAt = i;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// How many characters, starting from `firstChangeAt`, should be removed.\n\t\t\tvar deletions = 0;\n\t\t\t// How many characters, starting from `firstChangeAt`, should be inserted (basing on mutation.newText).\n\t\t\tvar insertions = 0;\n\n\t\t\tfor (var _i = firstChangeAt; _i <= lastChangeAt; _i++) {\n\t\t\t\t// If there is no change (equal) or delete, the character is existing in `oldText`. We count it for removing.\n\t\t\t\tif (diffResult[_i] != 'insert') {\n\t\t\t\t\tdeletions++;\n\t\t\t\t}\n\n\t\t\t\t// If there is no change (equal) or insert, the character is existing in `newText`. We count it for inserting.\n\t\t\t\tif (diffResult[_i] != 'delete') {\n\t\t\t\t\tinsertions++;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Try setting new model selection according to passed view selection.\n\t\t\tvar modelSelectionPosition = null;\n\n\t\t\tif (viewSelection) {\n\t\t\t\tmodelSelectionPosition = this.editing.mapper.toModelPosition(viewSelection.anchor);\n\t\t\t}\n\n\t\t\t// Get the position in view and model where the changes will happen.\n\t\t\tvar viewPos = new _position2.default(mutation.node, firstChangeAt);\n\t\t\tvar modelPos = this.editing.mapper.toModelPosition(viewPos);\n\t\t\tvar removeRange = _range2.default.createFromPositionAndShift(modelPos, deletions);\n\t\t\tvar insertText = newText.substr(firstChangeAt, insertions);\n\n\t\t\tthis.editor.execute('input', {\n\t\t\t\ttext: insertText,\n\t\t\t\trange: removeRange,\n\t\t\t\tresultPosition: modelSelectionPosition\n\t\t\t});\n\t\t}\n\t}, {\n\t\tkey: '_handleTextNodeInsertion',\n\t\tvalue: function _handleTextNodeInsertion(mutation) {\n\t\t\tif (mutation.type != 'children') {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// One new node.\n\t\t\tif (mutation.newChildren.length - mutation.oldChildren.length != 1) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// Which is text.\n\t\t\tvar diffResult = (0, _diff2.default)(mutation.oldChildren, mutation.newChildren, compareChildNodes);\n\t\t\tvar changes = (0, _difftochanges2.default)(diffResult, mutation.newChildren);\n\n\t\t\t// In case of [ delete, insert, insert ] the previous check will not exit.\n\t\t\tif (changes.length > 1) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tvar change = changes[0];\n\n\t\t\t// Which is text.\n\t\t\tif (!(change.values[0] instanceof _text2.default)) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tvar viewPos = new _position2.default(mutation.node, change.index);\n\t\t\tvar modelPos = this.editing.mapper.toModelPosition(viewPos);\n\t\t\tvar insertedText = change.values[0].data;\n\n\t\t\tthis.editor.execute('input', {\n\t\t\t\t// Replace &nbsp; inserted by the browser with normal space.\n\t\t\t\t// See comment in `_handleTextMutation`.\n\t\t\t\t// In this case we don't need to do this before `diff` because we diff whole nodes.\n\t\t\t\t// Just change &nbsp; in case there are some.\n\t\t\t\ttext: insertedText.replace(/\\u00A0/g, ' '),\n\t\t\t\trange: new _range2.default(modelPos)\n\t\t\t});\n\t\t}\n\t}]);\n\n\treturn MutationHandler;\n}();\n\nvar safeKeycodes = [(0, _keyboard.getCode)('arrowUp'), (0, _keyboard.getCode)('arrowRight'), (0, _keyboard.getCode)('arrowDown'), (0, _keyboard.getCode)('arrowLeft'), 9, // Tab\n16, // Shift\n17, // Ctrl\n18, // Alt\n20, // CapsLock\n27, // Escape\n33, // PageUp\n34, // PageDown\n35, // Home\n36];\n\n// Function keys.\nfor (var code = 112; code <= 135; code++) {\n\tsafeKeycodes.push(code);\n}\n\n// Returns `true` if a keystroke should not cause any content change caused by \"typing\".\n//\n// Note: This implementation is very simple and will need to be refined with time.\n//\n// @param {engine.view.observer.keyObserver.KeyEventData} keyData\n// @returns {Boolean}\nfunction isSafeKeystroke(keyData) {\n\t// Keystrokes which contain Ctrl don't represent typing.\n\tif (keyData.ctrlKey) {\n\t\treturn true;\n\t}\n\n\treturn safeKeycodes.includes(keyData.keyCode);\n}\n\n// Helper function that compares whether two given view nodes are same. It is used in `diff` when it's passed an array\n// with child nodes.\nfunction compareChildNodes(oldChild, newChild) {\n\tif (oldChild instanceof _text2.default && newChild instanceof _text2.default) {\n\t\treturn oldChild.data === newChild.data;\n\t} else {\n\t\treturn oldChild === newChild;\n\t}\n}\n\n/***/ }),\n/* 364 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if (\"value\" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };\n\nvar _command = __webpack_require__(15);\n\nvar _command2 = _interopRequireDefault(_command);\n\nvar _changebuffer = __webpack_require__(182);\n\nvar _changebuffer2 = _interopRequireDefault(_changebuffer);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module typing/inputcommand\n */\n\n/**\n * The input command. Used by the {@link module:typing/input~Input input feature} to handle typing.\n *\n * @extends module:core/command/command~Command\n */\nvar InputCommand = function (_Command) {\n\t_inherits(InputCommand, _Command);\n\n\t/**\n  * Creates an instance of the command.\n  *\n  * @param {module:core/editor/editor~Editor} editor\n  * @param {Number} undoStepSize The maximum number of atomic changes\n  * which can be contained in one batch in the command buffer.\n  */\n\tfunction InputCommand(editor, undoStepSize) {\n\t\t_classCallCheck(this, InputCommand);\n\n\t\t/**\n   * Typing's change buffer used to group subsequent changes into batches.\n   *\n   * @readonly\n   * @private\n   * @member {module:typing/changebuffer~ChangeBuffer} #_buffer\n   */\n\t\tvar _this = _possibleConstructorReturn(this, (InputCommand.__proto__ || Object.getPrototypeOf(InputCommand)).call(this, editor));\n\n\t\t_this._buffer = new _changebuffer2.default(editor.document, undoStepSize);\n\t\treturn _this;\n\t}\n\n\t/**\n  * @inheritDoc\n  */\n\n\n\t_createClass(InputCommand, [{\n\t\tkey: 'destroy',\n\t\tvalue: function destroy() {\n\t\t\t_get(InputCommand.prototype.__proto__ || Object.getPrototypeOf(InputCommand.prototype), 'destroy', this).call(this);\n\n\t\t\tthis._buffer.destroy();\n\t\t\tthis._buffer = null;\n\t\t}\n\n\t\t/**\n   * The current change buffer.\n   *\n   * @type {module:typing/changebuffer~ChangeBuffer}\n   */\n\n\t}, {\n\t\tkey: '_doExecute',\n\n\n\t\t/**\n   * Executes the input command. It replaces the content within the given range with the given text.\n   * Replacing is a two step process, first content within the range is removed and then new text is inserted\n   * on the beginning of the range (which after removal is a collapsed range).\n   *\n   * @param {Object} [options] The command options.\n   * @param {String} [options.text=''] Text to be inserted.\n   * @param {module:engine/model/range~Range} [options.range] Range in which the text is inserted. Defaults\n   * to the first range in the current selection.\n   * @param {module:engine/model/position~Position} [options.resultPosition] Position at which the selection\n   * should be placed after the insertion. If not specified, the selection will be placed right after\n   * the inserted text.\n   */\n\t\tvalue: function _doExecute() {\n\t\t\tvar _this2 = this;\n\n\t\t\tvar options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n\n\t\t\tvar doc = this.editor.document;\n\t\t\tvar text = options.text || '';\n\t\t\tvar textInsertions = text.length;\n\t\t\tvar range = options.range || doc.selection.getFirstRange();\n\t\t\tvar resultPosition = options.resultPosition;\n\n\t\t\tdoc.enqueueChanges(function () {\n\t\t\t\tvar isCollapsedRange = range.isCollapsed;\n\n\t\t\t\tif (!isCollapsedRange) {\n\t\t\t\t\t_this2._buffer.batch.remove(range);\n\t\t\t\t}\n\n\t\t\t\t_this2._buffer.batch.weakInsert(range.start, text);\n\n\t\t\t\tif (resultPosition) {\n\t\t\t\t\t_this2.editor.data.model.selection.collapse(resultPosition);\n\t\t\t\t} else if (isCollapsedRange) {\n\t\t\t\t\t// If range was collapsed just shift the selection by the number of inserted characters.\n\t\t\t\t\t_this2.editor.data.model.selection.collapse(range.start.getShiftedBy(textInsertions));\n\t\t\t\t}\n\n\t\t\t\t_this2._buffer.input(textInsertions);\n\t\t\t});\n\t\t}\n\t}, {\n\t\tkey: 'buffer',\n\t\tget: function get() {\n\t\t\treturn this._buffer;\n\t\t}\n\t}]);\n\n\treturn InputCommand;\n}(_command2.default);\n\nexports.default = InputCommand;\n\n/***/ }),\n/* 365 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _plugin = __webpack_require__(2);\n\nvar _plugin2 = _interopRequireDefault(_plugin);\n\nvar _input = __webpack_require__(363);\n\nvar _input2 = _interopRequireDefault(_input);\n\nvar _delete = __webpack_require__(360);\n\nvar _delete2 = _interopRequireDefault(_delete);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module typing/typing\n */\n\n/**\n * The typing feature. Handles typing.\n *\n * @extends core.Plugin\n */\nvar Typing = function (_Plugin) {\n  _inherits(Typing, _Plugin);\n\n  function Typing() {\n    _classCallCheck(this, Typing);\n\n    return _possibleConstructorReturn(this, (Typing.__proto__ || Object.getPrototypeOf(Typing)).apply(this, arguments));\n  }\n\n  _createClass(Typing, null, [{\n    key: 'requires',\n    get: function get() {\n      return [_input2.default, _delete2.default];\n    }\n  }]);\n\n  return Typing;\n}(_plugin2.default);\n\nexports.default = Typing;\n\n/***/ }),\n/* 366 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = escPressHandler;\n\nvar _keyboard = __webpack_require__(21);\n\n/**\n * Detects <kbd>Esc</kbd> `keydown` DOM event and fires an action.\n *\n * @param {Object} options Configuration options.\n * @param {module:utils/dom/emittermixin~Emitter} options.emitter The emitter to which this behavior should be added.\n * @param {Function} options.activator Function returning a `Boolean`, to determine whether handler is active.\n * @param {Function} options.callback Function fired after <kbd>Esc</kbd> is pressed.\n */\nfunction escPressHandler(_ref) {\n  var emitter = _ref.emitter,\n      activator = _ref.activator,\n      callback = _ref.callback;\n\n  emitter.listenTo(document, 'keydown', function (evt, _ref2) {\n    var keyCode = _ref2.keyCode;\n\n    if (keyCode == _keyboard.keyCodes.esc && activator()) {\n      callback();\n    }\n  });\n} /**\n   * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n   * For licensing, see LICENSE.md.\n   */\n\n/**\n * @module ui/bindings/escpresshandler\n */\n\n/* global document */\n\n/***/ }),\n/* 367 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module ui/componentfactory\n */\n\nvar _ckeditorerror = __webpack_require__(0);\n\nvar _ckeditorerror2 = _interopRequireDefault(_ckeditorerror);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * Class implementing the UI component factory.\n *\n * Factories of specific UI components can be registered under their unique names. Registered\n * components can be later instantiated by providing the name of the component.\n *\n * The main use case for the component factory is the {@link module:core/editor/editorui~EditorUI#componentFactory} factory.\n */\nvar ComponentFactory = function () {\n\t/**ś\n  * Creates ComponentFactory instance.\n  *\n  * @constructor\n  * @param {module:core/editor/editor~Editor} editor The editor instance.\n  */\n\tfunction ComponentFactory(editor) {\n\t\t_classCallCheck(this, ComponentFactory);\n\n\t\t/**\n   * The editor instance.\n   *\n   * @readonly\n   * @member {module:core/editor/editor~Editor}\n   */\n\t\tthis.editor = editor;\n\n\t\t/**\n   * Registered component factories.\n   *\n   * @private\n   * @member {Map}\n   */\n\t\tthis._components = new Map();\n\t}\n\n\t/**\n  * Registers a component factory.\n  *\n  * @param {String} name The name of the component.\n  * @param {Function} ControllerClass The component controller constructor.\n  * @param {Function} ViewClass The component view constructor.\n  * @param {Function} [callback] The callback to process the view instance,\n  * i.e. to set attribute values, create attribute bindings, etc.\n  */\n\n\n\t_createClass(ComponentFactory, [{\n\t\tkey: 'add',\n\t\tvalue: function add(name, callback) {\n\t\t\tif (this._components.get(name)) {\n\t\t\t\tthrow new _ckeditorerror2.default('componentfactory-item-exists: The item already exists in the component factory.', { name: name });\n\t\t\t}\n\n\t\t\tthis._components.set(name, callback);\n\t\t}\n\n\t\t/**\n   * Creates a component view instance.\n   *\n   * @param {String} name The name of the component.\n   * @returns {module:ui/view~View} The instantiated component view.\n   */\n\n\t}, {\n\t\tkey: 'create',\n\t\tvalue: function create(name) {\n\t\t\treturn this._components.get(name)(this.editor.locale);\n\t\t}\n\t}]);\n\n\treturn ComponentFactory;\n}();\n\nexports.default = ComponentFactory;\n\n/***/ }),\n/* 368 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = createDropdown;\n\nvar _buttonview = __webpack_require__(25);\n\nvar _buttonview2 = _interopRequireDefault(_buttonview);\n\nvar _dropdownview = __webpack_require__(370);\n\nvar _dropdownview2 = _interopRequireDefault(_dropdownview);\n\nvar _dropdownpanelview = __webpack_require__(369);\n\nvar _dropdownpanelview2 = _interopRequireDefault(_dropdownpanelview);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Creates an instance of {@link module:ui/dropdown/dropdownview~DropdownView} class using\n * defined model.\n *\n * @param {module:ui/dropdown/dropdownmodel~DropdownModel} model Model of this dropdown.\n * @param {module:utils/locale~Locale} locale The locale instance.\n * @returns {module:ui/dropdown/dropdownview~DropdownView} The dropdown view instance.\n */\nfunction createDropdown(model, locale) {\n  var buttonView = new _buttonview2.default(locale);\n  buttonView.bind('label', 'isOn', 'isEnabled', 'withText', 'keystroke', 'tooltip').to(model);\n\n  var panelView = new _dropdownpanelview2.default(locale);\n\n  return new _dropdownview2.default(locale, buttonView, panelView);\n} /**\n   * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n   * For licensing, see LICENSE.md.\n   */\n\n/**\n * @module ui/dropdown/createdropdown\n */\n\n/***/ }),\n/* 369 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _view = __webpack_require__(7);\n\nvar _view2 = _interopRequireDefault(_view);\n\nvar _template = __webpack_require__(6);\n\nvar _template2 = _interopRequireDefault(_template);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module ui/dropdown/dropdownpanelview\n */\n\n/**\n * The dropdown panel view class.\n *\n * @extends module:ui/view~View\n */\nvar DropdownPanelView = function (_View) {\n\t_inherits(DropdownPanelView, _View);\n\n\t/**\n  * @inheritDoc\n  */\n\tfunction DropdownPanelView(locale) {\n\t\t_classCallCheck(this, DropdownPanelView);\n\n\t\tvar _this = _possibleConstructorReturn(this, (DropdownPanelView.__proto__ || Object.getPrototypeOf(DropdownPanelView)).call(this, locale));\n\n\t\tvar bind = _this.bindTemplate;\n\n\t\t/**\n   * Controls whether the panel is visible.\n   *\n   * @observable\n   * @member {Boolean} #isVisible\n   */\n\t\t_this.set('isVisible', false);\n\n\t\t/**\n   * Collection of the child views.\n   *\n   * @readonly\n   * @member {module:ui/viewcollection~ViewCollection}\n   */\n\t\t_this.children = _this.createCollection();\n\n\t\t_this.template = new _template2.default({\n\t\t\ttag: 'div',\n\n\t\t\tattributes: {\n\t\t\t\tclass: ['ck-reset', 'ck-dropdown__panel', bind.if('isVisible', 'ck-dropdown__panel-visible')]\n\t\t\t},\n\n\t\t\tchildren: _this.children\n\t\t});\n\t\treturn _this;\n\t}\n\n\treturn DropdownPanelView;\n}(_view2.default);\n\nexports.default = DropdownPanelView;\n\n/***/ }),\n/* 370 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if (\"value\" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };\n\nvar _view = __webpack_require__(7);\n\nvar _view2 = _interopRequireDefault(_view);\n\nvar _template = __webpack_require__(6);\n\nvar _template2 = _interopRequireDefault(_template);\n\nvar _focustracker = __webpack_require__(60);\n\nvar _focustracker2 = _interopRequireDefault(_focustracker);\n\nvar _keystrokehandler = __webpack_require__(61);\n\nvar _keystrokehandler2 = _interopRequireDefault(_keystrokehandler);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module ui/dropdown/dropdownview\n */\n\n/**\n * The dropdown view class.\n *\n * @extends module:ui/view~View\n */\nvar DropdownView = function (_View) {\n\t_inherits(DropdownView, _View);\n\n\t/**\n  * @inheritDoc\n  */\n\tfunction DropdownView(locale, buttonView, panelView) {\n\t\t_classCallCheck(this, DropdownView);\n\n\t\t// Extend button's template before it's registered as a child of the dropdown because\n\t\t// by doing so, its #element is rendered and any post–render template extension will\n\t\t// not be reflected in DOM.\n\t\tvar _this = _possibleConstructorReturn(this, (DropdownView.__proto__ || Object.getPrototypeOf(DropdownView)).call(this, locale));\n\n\t\t_template2.default.extend(buttonView.template, {\n\t\t\tattributes: {\n\t\t\t\tclass: ['ck-dropdown__button']\n\t\t\t}\n\t\t});\n\n\t\t/**\n   * Button of this dropdown view.\n   *\n   * @readonly\n   * @member {ui.button.ButtonView} #buttonView\n   */\n\t\t_this.buttonView = buttonView;\n\n\t\t/**\n   * Panel of this dropdown view.\n   *\n   * @readonly\n   * @member {module:ui/dropdown/dropdownpanelview~DropdownPanelView} #panelView\n   */\n\t\t_this.panelView = panelView;\n\n\t\t/**\n   * Controls whether the dropdown view is open, which also means its\n   * {@link #panelView panel} is visible.\n   *\n   * @observable\n   * @member {Boolean} #isOpen\n   */\n\t\t_this.set('isOpen', false);\n\n\t\t/**\n   * Tracks information about DOM focus in the list.\n   *\n   * @readonly\n   * @member {module:utils/focustracker~FocusTracker}\n   */\n\t\t_this.focusTracker = new _focustracker2.default();\n\n\t\t/**\n   * Instance of the {@link module:core/keystrokehandler~KeystrokeHandler}.\n   *\n   * @readonly\n   * @member {module:core/keystrokehandler~KeystrokeHandler}\n   */\n\t\t_this.keystrokes = new _keystrokehandler2.default();\n\n\t\t_this.template = new _template2.default({\n\t\t\ttag: 'div',\n\n\t\t\tattributes: {\n\t\t\t\tclass: ['ck-dropdown']\n\t\t\t},\n\n\t\t\tchildren: [buttonView, panelView]\n\t\t});\n\n\t\t// Toggle the the dropdown when it's button has been clicked.\n\t\t_this.listenTo(buttonView, 'execute', function () {\n\t\t\treturn _this.isOpen = !_this.isOpen;\n\t\t});\n\n\t\t// Toggle the visibility of the panel when the dropdown becomes open.\n\t\tpanelView.bind('isVisible').to(_this, 'isOpen');\n\n\t\t/**\n   * The label of the dropdown.\n   *\n   * @observable\n   * @member {String} #label\n   */\n\n\t\t/**\n   * Controls whether the dropdown is enabled (can be clicked).\n   *\n   * @observable\n   * @member {Boolean} #isEnabled\n   */\n\n\t\t/**\n   * Controls whether the {@link #buttonView} is \"pushed\".\n   *\n   * @observable\n   * @member {Boolean} #isOn\n   */\n\n\t\t/**\n   * (Optional) Whether the label of the dropdown is visible. See {@link module:ui/button/buttonview~ButtonView#withText}.\n   *\n   * @observable\n   * @member {Boolean} #withText\n   */\n\t\treturn _this;\n\t}\n\n\t/**\n  * @inheritDoc\n  */\n\n\n\t_createClass(DropdownView, [{\n\t\tkey: 'init',\n\t\tvalue: function init() {\n\t\t\tvar _this2 = this;\n\n\t\t\t// Listen for keystrokes coming from within #element.\n\t\t\tthis.keystrokes.listenTo(this.element);\n\n\t\t\t// Register #element in the focus tracker.\n\t\t\tthis.focusTracker.add(this.element);\n\n\t\t\tvar closeDropdown = function closeDropdown(data, cancel) {\n\t\t\t\tif (_this2.isOpen) {\n\t\t\t\t\t_this2.buttonView.focus();\n\t\t\t\t\t_this2.isOpen = false;\n\t\t\t\t\tcancel();\n\t\t\t\t}\n\t\t\t};\n\n\t\t\t// Open the dropdown panel using the arrow down key, just like with return or space.\n\t\t\tthis.keystrokes.set('arrowdown', function (data, cancel) {\n\t\t\t\tif (!_this2.isOpen) {\n\t\t\t\t\t_this2.isOpen = true;\n\t\t\t\t\tcancel();\n\t\t\t\t}\n\t\t\t});\n\n\t\t\t// Block the right arrow key (until nested dropdowns are implemented).\n\t\t\tthis.keystrokes.set('arrowright', function (data, cancel) {\n\t\t\t\tif (_this2.isOpen) {\n\t\t\t\t\tcancel();\n\t\t\t\t}\n\t\t\t});\n\n\t\t\t// Close the dropdown using the arrow left/escape key.\n\t\t\tthis.keystrokes.set('arrowleft', closeDropdown);\n\t\t\tthis.keystrokes.set('esc', closeDropdown);\n\n\t\t\treturn _get(DropdownView.prototype.__proto__ || Object.getPrototypeOf(DropdownView.prototype), 'init', this).call(this);\n\t\t}\n\n\t\t/**\n   * Focuses the {@link #buttonView}.\n   */\n\n\t}, {\n\t\tkey: 'focus',\n\t\tvalue: function focus() {\n\t\t\tthis.buttonView.focus();\n\t\t}\n\t}]);\n\n\treturn DropdownView;\n}(_view2.default);\n\nexports.default = DropdownView;\n\n/***/ }),\n/* 371 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\nexports.default = createListDropdown;\n\nvar _listview = __webpack_require__(379);\n\nvar _listview2 = _interopRequireDefault(_listview);\n\nvar _listitemview = __webpack_require__(378);\n\nvar _listitemview2 = _interopRequireDefault(_listitemview);\n\nvar _createdropdown = __webpack_require__(368);\n\nvar _createdropdown2 = _interopRequireDefault(_createdropdown);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _toConsumableArray(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } else { return Array.from(arr); } } /**\n                                                                                                                                                                                                     * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                     * For licensing, see LICENSE.md.\n                                                                                                                                                                                                     */\n\n/**\n * @module ui/dropdown/list/createlistdropdown\n */\n\n/* global document */\n\n/**\n * Creates an instance of {@link module:ui/dropdown/list/listdropdownview~ListDropdownView} class using\n * defined model.\n *\n * @param {module:ui/dropdown/list/listdropdownmodel~ListDropdownModel} model Model of this list dropdown.\n * @param {module:utils/locale~Locale} locale The locale instance.\n * @returns {module:ui/dropdown/list/listdropdownview~ListDropdownView} The list dropdown view instance.\n */\nfunction createListDropdown(model, locale) {\n\tvar dropdownView = (0, _createdropdown2.default)(model, locale);\n\n\tvar listView = dropdownView.listView = new _listview2.default(locale);\n\n\tlistView.items.bindTo(model.items).as(function (itemModel) {\n\t\tvar item = new _listitemview2.default(locale);\n\n\t\t// Bind all attributes of the model to the item view.\n\t\titem.bind.apply(item, _toConsumableArray(Object.keys(itemModel))).to(itemModel);\n\n\t\treturn item;\n\t});\n\n\t// TODO: Delegate all events instead of just execute.\n\tlistView.items.delegate('execute').to(dropdownView);\n\n\tdropdownView.panelView.children.add(listView);\n\n\tdropdownView.on('change:isOpen', function (evt, name, value) {\n\t\tif (value) {\n\t\t\tattachDocumentClickListener(dropdownView);\n\t\t} else {\n\t\t\tdropdownView.stopListening(document);\n\t\t}\n\t});\n\n\t// Close the dropdown when one of the list items has been executed.\n\tdropdownView.on('execute', function () {\n\t\tdropdownView.isOpen = false;\n\t});\n\n\t// If the dropdown panel is already open, the arrow down key should\n\t// focus the first element in list.\n\tdropdownView.keystrokes.set('arrowdown', function (data, cancel) {\n\t\tif (dropdownView.isOpen) {\n\t\t\tlistView.focus();\n\t\t\tcancel();\n\t\t}\n\t});\n\n\t// If the dropdown panel is already open, the arrow up key should\n\t// focus the last element in the list.\n\tdropdownView.keystrokes.set('arrowup', function (data, cancel) {\n\t\tif (dropdownView.isOpen) {\n\t\t\tlistView.focusLast();\n\t\t\tcancel();\n\t\t}\n\t});\n\n\treturn dropdownView;\n}\n\n// Attaches a \"click\" listener in DOM to check if any element outside\n// the dropdown has been clicked.\n//\n// @private\n// @param {module:ui/dropdown/listdropdownview~ListDropdownView} dropdownView\nfunction attachDocumentClickListener(dropdownView) {\n\t// TODO: It will probably be focus/blur-based rather than click. It should be bound\n\t// to focusmanager of some sort.\n\tdropdownView.listenTo(document, 'click', function (evtInfo, _ref) {\n\t\tvar domEvtTarget = _ref.target;\n\n\t\t// Collapse the dropdown when the webpage outside of the component is clicked.\n\t\tif (dropdownView.element != domEvtTarget && !dropdownView.element.contains(domEvtTarget)) {\n\t\t\tdropdownView.isOpen = false;\n\t\t}\n\t});\n}\n\n/***/ }),\n/* 372 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if (\"value\" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };\n\nvar _view = __webpack_require__(7);\n\nvar _view2 = _interopRequireDefault(_view);\n\nvar _template = __webpack_require__(6);\n\nvar _template2 = _interopRequireDefault(_template);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module ui/editableui/editableuiview\n */\n\n/**\n * The editable UI view class.\n *\n * @extends module:ui/view~View\n */\nvar EditableUIView = function (_View) {\n\t_inherits(EditableUIView, _View);\n\n\t/**\n  * Creates an instance of EditableUIView class.\n  *\n  * @param {module:utils/locale~Locale} [locale] The locale instance.\n  * @param {HTMLElement} [editableElement] The editable element. If not specified, this view\n  * should create it. Otherwise, the existing element should be used.\n  */\n\tfunction EditableUIView(locale, editableElement) {\n\t\t_classCallCheck(this, EditableUIView);\n\n\t\tvar _this = _possibleConstructorReturn(this, (EditableUIView.__proto__ || Object.getPrototypeOf(EditableUIView)).call(this, locale));\n\n\t\tvar bind = _this.bindTemplate;\n\n\t\tif (editableElement) {\n\t\t\t_this.element = _this.editableElement = editableElement;\n\t\t}\n\n\t\t_this.template = new _template2.default({\n\t\t\ttag: 'div',\n\t\t\tattributes: {\n\t\t\t\tclass: [bind.to('isFocused', function (value) {\n\t\t\t\t\treturn value ? 'ck-focused' : 'ck-blurred';\n\t\t\t\t}), 'ck-editor__editable'],\n\t\t\t\tcontenteditable: bind.to('isReadOnly', function (value) {\n\t\t\t\t\treturn !value;\n\t\t\t\t})\n\t\t\t}\n\t\t});\n\n\t\t/**\n   * Controls whether the editable is writable or not.\n   *\n   * @observable\n   * @member {Boolean} #isReadOnly\n   */\n\t\t_this.set('isReadOnly', false);\n\n\t\t/**\n   * Controls whether the editable is focused, i.e. the user is typing in it.\n   *\n   * @observable\n   * @member {Boolean} #isFocused\n   */\n\t\t_this.set('isFocused', false);\n\n\t\t/**\n   * The element which is the main editable element (usually the one with `contentEditable=\"true\"`).\n   *\n   * @readonly\n   * @member {HTMLElement} #editableElement\n   */\n\t\treturn _this;\n\t}\n\n\t/**\n  * Initializes the view by either applying the {@link #template} to the existing\n  * {@link #editableElement} or assigning {@link #element} as {@link #editableElement}.\n  *\n  * @returns {Promise}\n  */\n\n\n\t_createClass(EditableUIView, [{\n\t\tkey: 'init',\n\t\tvalue: function init() {\n\t\t\tif (this.editableElement) {\n\t\t\t\tthis.template.apply(this.editableElement);\n\t\t\t} else {\n\t\t\t\tthis.editableElement = this.element;\n\t\t\t}\n\n\t\t\treturn _get(EditableUIView.prototype.__proto__ || Object.getPrototypeOf(EditableUIView.prototype), 'init', this).call(this);\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: 'destroy',\n\t\tvalue: function destroy() {\n\t\t\tthis.editableElement.contentEditable = false;\n\n\t\t\treturn _get(EditableUIView.prototype.__proto__ || Object.getPrototypeOf(EditableUIView.prototype), 'destroy', this).call(this);\n\t\t}\n\t}]);\n\n\treturn EditableUIView;\n}(_view2.default);\n\nexports.default = EditableUIView;\n\n/***/ }),\n/* 373 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _editableuiview = __webpack_require__(372);\n\nvar _editableuiview2 = _interopRequireDefault(_editableuiview);\n\nvar _template = __webpack_require__(6);\n\nvar _template2 = _interopRequireDefault(_template);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module ui/editableui/inline/inlineeditableuiview\n */\n\n/**\n * The inline editable UI class implementing an inline {@link module:ui/editableui/editableuiview~EditableUIView}.\n *\n * @extends module:ui/editableui/editableuiview~EditableUIView\n */\nvar InlineEditableUIView = function (_EditableUIView) {\n\t_inherits(InlineEditableUIView, _EditableUIView);\n\n\t/**\n  * Creates an instance of the InlineEditableUIView class.\n  *\n  * @param {module:utils/locale~Locale} [locale] The locale instance.\n  * @param {HTMLElement} [editableElement] The editable element. If not specified, the\n  * {@link module:ui/editableui/editableuiview~EditableUIView}\n  * should create it. Otherwise, the existing element should be used.\n  */\n\tfunction InlineEditableUIView(locale, editableElement) {\n\t\t_classCallCheck(this, InlineEditableUIView);\n\n\t\tvar _this = _possibleConstructorReturn(this, (InlineEditableUIView.__proto__ || Object.getPrototypeOf(InlineEditableUIView)).call(this, locale, editableElement));\n\n\t\tvar bind = _this.bindTemplate;\n\t\tvar t = _this.t;\n\n\t\t/**\n   * The name of the editable UI view.\n   *\n   * @observable\n   * @member {String} #name\n   */\n\t\t_this.set('name', null);\n\n\t\tvar getLabel = function getLabel(value) {\n\t\t\treturn t('Rich Text Editor, %0', [value]);\n\t\t};\n\n\t\t_template2.default.extend(_this.template, {\n\t\t\tattributes: {\n\t\t\t\trole: 'textbox',\n\t\t\t\t'aria-label': bind.to('name', getLabel),\n\t\t\t\tclass: 'ck-editor__editable_inline'\n\t\t\t}\n\t\t});\n\t\treturn _this;\n\t}\n\n\treturn InlineEditableUIView;\n}(_editableuiview2.default);\n\nexports.default = InlineEditableUIView;\n\n/***/ }),\n/* 374 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _editoruiview = __webpack_require__(375);\n\nvar _editoruiview2 = _interopRequireDefault(_editoruiview);\n\nvar _uid = __webpack_require__(65);\n\nvar _uid2 = _interopRequireDefault(_uid);\n\nvar _template = __webpack_require__(6);\n\nvar _template2 = _interopRequireDefault(_template);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module ui/editorui/boxed/boxededitoruiview\n */\n\n/**\n * The boxed editor UI view class. This class represents an editor interface\n * consisting of a toolbar and an editable area, enclosed within a box.\n *\n * @extends module:ui/editorui/editoruiview~EditorUIView\n */\nvar BoxedEditorUIView = function (_EditorUIView) {\n\t_inherits(BoxedEditorUIView, _EditorUIView);\n\n\t/**\n  * Creates an instance of the boxed editor UI view class.\n  *\n  * @param {module:utils/locale~Locale} locale The locale instance..\n  */\n\tfunction BoxedEditorUIView(locale) {\n\t\t_classCallCheck(this, BoxedEditorUIView);\n\n\t\tvar _this = _possibleConstructorReturn(this, (BoxedEditorUIView.__proto__ || Object.getPrototypeOf(BoxedEditorUIView)).call(this, locale));\n\n\t\tvar t = _this.t;\n\t\tvar ariaLabelUid = (0, _uid2.default)();\n\n\t\t/**\n   * The UI's width.\n   *\n   * @observable\n   * @member {Number} #width\n   */\n\t\t_this.set('width', null);\n\n\t\t/**\n   * The UI's height.\n   *\n   * @observable\n   * @member {Number} #height\n   */\n\t\t_this.set('height', null);\n\n\t\t/**\n   * Collection of the child views located in the top (`.ck-editor__top`)\n   * area of the UI.\n   *\n   * @readonly\n   * @member {module:ui/viewcollection~ViewCollection}\n   */\n\t\t_this.top = _this.createCollection();\n\n\t\t/**\n   * Collection of the child views located in the main (`.ck-editor__main`)\n   * area of the UI.\n   *\n   * @readonly\n   * @member {module:ui/viewcollection~ViewCollection}\n   */\n\t\t_this.main = _this.createCollection();\n\n\t\t_this.template = new _template2.default({\n\t\t\ttag: 'div',\n\n\t\t\tattributes: {\n\t\t\t\tclass: ['ck-reset', 'ck-editor', 'ck-rounded-corners'],\n\t\t\t\trole: 'application',\n\t\t\t\tdir: 'ltr',\n\t\t\t\tlang: locale.lang,\n\t\t\t\t'aria-labelledby': 'cke-editor__aria-label_' + ariaLabelUid\n\t\t\t},\n\n\t\t\tchildren: [{\n\t\t\t\ttag: 'span',\n\t\t\t\tattributes: {\n\t\t\t\t\tid: 'cke-editor__aria-label_' + ariaLabelUid,\n\t\t\t\t\tclass: 'cke-voice-label'\n\t\t\t\t},\n\t\t\t\tchildren: [\n\t\t\t\t// TODO: Editor name?\n\t\t\t\tt('Rich Text Editor')]\n\t\t\t}, {\n\t\t\t\ttag: 'div',\n\t\t\t\tattributes: {\n\t\t\t\t\tclass: 'ck-editor__top ck-reset_all',\n\t\t\t\t\trole: 'presentation'\n\t\t\t\t},\n\t\t\t\tchildren: _this.top\n\t\t\t}, {\n\t\t\t\ttag: 'div',\n\t\t\t\tattributes: {\n\t\t\t\t\tclass: 'ck-editor__main',\n\t\t\t\t\trole: 'presentation'\n\t\t\t\t},\n\t\t\t\tchildren: _this.main\n\t\t\t}]\n\t\t});\n\t\treturn _this;\n\t}\n\n\treturn BoxedEditorUIView;\n}(_editoruiview2.default);\n\nexports.default = BoxedEditorUIView;\n\n/***/ }),\n/* 375 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if (\"value\" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };\n\nvar _view = __webpack_require__(7);\n\nvar _view2 = _interopRequireDefault(_view);\n\nvar _template = __webpack_require__(6);\n\nvar _template2 = _interopRequireDefault(_template);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module ui/editorui/editoruiview\n */\n\n/* globals document */\n\n/**\n * The editor UI view class. Base class for the editor main views.\n *\n * @extends module:ui/view~View\n */\nvar EditorUIView = function (_View) {\n\t_inherits(EditorUIView, _View);\n\n\t/**\n  * Creates an instance of the editor UI view class.\n  *\n  * @param {module:utils/locale~Locale} [locale] The locale instance.\n  */\n\tfunction EditorUIView(locale) {\n\t\t_classCallCheck(this, EditorUIView);\n\n\t\t/**\n   * Collection of the child views, detached from the DOM\n   * structure of the editor, like panels, icons etc.\n   *\n   * @readonly\n   * @member {module:ui/viewcollection~ViewCollection} #body\n   */\n\t\tvar _this = _possibleConstructorReturn(this, (EditorUIView.__proto__ || Object.getPrototypeOf(EditorUIView)).call(this, locale));\n\n\t\t_this.body = _this.createCollection();\n\n\t\t/**\n   * The element holding elements of the 'body' region.\n   *\n   * @private\n   * @member {HTMLElement} #_bodyCollectionContainer\n   */\n\t\treturn _this;\n\t}\n\n\t/**\n  * @inheritDoc\n  */\n\n\n\t_createClass(EditorUIView, [{\n\t\tkey: 'init',\n\t\tvalue: function init() {\n\t\t\tvar _this2 = this;\n\n\t\t\treturn Promise.resolve().then(function () {\n\t\t\t\treturn _this2._renderBodyCollection();\n\t\t\t}).then(function () {\n\t\t\t\treturn _get(EditorUIView.prototype.__proto__ || Object.getPrototypeOf(EditorUIView.prototype), 'init', _this2).call(_this2);\n\t\t\t});\n\t\t}\n\n\t\t/**\n   * @inheritDoc\n   */\n\n\t}, {\n\t\tkey: 'destroy',\n\t\tvalue: function destroy() {\n\t\t\tthis._bodyCollectionContainer.remove();\n\n\t\t\treturn _get(EditorUIView.prototype.__proto__ || Object.getPrototypeOf(EditorUIView.prototype), 'destroy', this).call(this);\n\t\t}\n\n\t\t/**\n   * Creates and appends to `<body>` the {@link #body} collection container.\n   *\n   * @private\n   */\n\n\t}, {\n\t\tkey: '_renderBodyCollection',\n\t\tvalue: function _renderBodyCollection() {\n\t\t\tvar bodyElement = this._bodyCollectionContainer = new _template2.default({\n\t\t\t\ttag: 'div',\n\t\t\t\tattributes: {\n\t\t\t\t\tclass: ['ck-body', 'ck-rounded-corners', 'ck-reset_all']\n\t\t\t\t},\n\t\t\t\tchildren: this.body\n\t\t\t}).render();\n\n\t\t\tdocument.body.appendChild(bodyElement);\n\t\t}\n\t}]);\n\n\treturn EditorUIView;\n}(_view2.default);\n\nexports.default = EditorUIView;\n\n/***/ }),\n/* 376 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _view = __webpack_require__(7);\n\nvar _view2 = _interopRequireDefault(_view);\n\nvar _template = __webpack_require__(6);\n\nvar _template2 = _interopRequireDefault(_template);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/* global DOMParser */\n\n/**\n * @module ui/icon/iconview\n */\n\n/**\n * The icon view class.\n *\n * @extends module:ui/view~View\n */\nvar IconView = function (_View) {\n\t_inherits(IconView, _View);\n\n\t/**\n  * @inheritDoc\n  */\n\tfunction IconView() {\n\t\t_classCallCheck(this, IconView);\n\n\t\tvar _this = _possibleConstructorReturn(this, (IconView.__proto__ || Object.getPrototypeOf(IconView)).call(this));\n\n\t\tvar bind = _this.bindTemplate;\n\n\t\t/**\n   * The SVG source of the icon.\n   *\n   * @observable\n   * @member {String} #content\n   */\n\t\t_this.set('content');\n\n\t\t/**\n   * This attribute specifies the boundaries to which the\n   * icon content should stretch.\n   *\n   * @observable\n   * @default '0 0 20 20'\n   * @member {String} #viewBox\n   */\n\t\t_this.set('viewBox', '0 0 20 20');\n\n\t\t_this.template = new _template2.default({\n\t\t\ttag: 'svg',\n\t\t\tns: 'http://www.w3.org/2000/svg',\n\t\t\tattributes: {\n\t\t\t\tclass: 'ck-icon',\n\t\t\t\tviewBox: bind.to('viewBox')\n\t\t\t}\n\t\t});\n\n\t\t// This is a hack for lack of innerHTML binding.\n\t\t// See: https://github.com/ckeditor/ckeditor5-ui/issues/99.\n\t\t_this.on('change:content', function (evt, name, value) {\n\t\t\tvar svg = new DOMParser().parseFromString(value.trim(), 'image/svg+xml').firstChild;\n\n\t\t\twhile (svg.childNodes.length > 0) {\n\t\t\t\t_this.element.appendChild(svg.childNodes[0]);\n\t\t\t}\n\t\t});\n\t\treturn _this;\n\t}\n\n\treturn IconView;\n}(_view2.default);\n\nexports.default = IconView;\n\n/***/ }),\n/* 377 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _view = __webpack_require__(7);\n\nvar _view2 = _interopRequireDefault(_view);\n\nvar _template = __webpack_require__(6);\n\nvar _template2 = _interopRequireDefault(_template);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module ui/label/labelview\n */\n\n/**\n * The label view class.\n *\n * @extends module:ui/view~View\n */\nvar LabelView = function (_View) {\n\t_inherits(LabelView, _View);\n\n\t/**\n  * @inheritDoc\n  */\n\tfunction LabelView(locale) {\n\t\t_classCallCheck(this, LabelView);\n\n\t\t/**\n   * The text of the label.\n   *\n   * @observable\n   * @member {String} #text\n   */\n\t\tvar _this = _possibleConstructorReturn(this, (LabelView.__proto__ || Object.getPrototypeOf(LabelView)).call(this, locale));\n\n\t\t_this.set('text');\n\n\t\t/**\n   * The `for` attribute of the label (i.e. to pair with an `<input>` element).\n   *\n   * @observable\n   * @member {String} #for\n   */\n\t\t_this.set('for');\n\n\t\tvar bind = _this.bindTemplate;\n\n\t\t_this.template = new _template2.default({\n\t\t\ttag: 'label',\n\t\t\tattributes: {\n\t\t\t\tclass: ['ck-label'],\n\t\t\t\tfor: bind.to('for')\n\t\t\t},\n\t\t\tchildren: [{\n\t\t\t\ttext: bind.to('text')\n\t\t\t}]\n\t\t});\n\t\treturn _this;\n\t}\n\n\treturn LabelView;\n}(_view2.default);\n\nexports.default = LabelView;\n\n/***/ }),\n/* 378 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _view = __webpack_require__(7);\n\nvar _view2 = _interopRequireDefault(_view);\n\nvar _template = __webpack_require__(6);\n\nvar _template2 = _interopRequireDefault(_template);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module ui/list/listitemview\n */\n\n/**\n * The list item view class.\n *\n * @extends module:ui/view~View\n */\nvar ListItemView = function (_View) {\n\t_inherits(ListItemView, _View);\n\n\t/**\n  * @inheritDoc\n  */\n\tfunction ListItemView() {\n\t\t_classCallCheck(this, ListItemView);\n\n\t\t/**\n   * Controls the `tabindex` attribute of the item.\n   *\n   * @observable\n   * @default -1\n   * @member {String} #tabindex\n   */\n\t\tvar _this = _possibleConstructorReturn(this, (ListItemView.__proto__ || Object.getPrototypeOf(ListItemView)).call(this));\n\n\t\t_this.set('tabindex', -1);\n\n\t\tvar bind = _this.bindTemplate;\n\n\t\t_this.template = new _template2.default({\n\t\t\ttag: 'li',\n\n\t\t\tattributes: {\n\t\t\t\tclass: ['ck-list__item'],\n\t\t\t\tstyle: bind.to('style'),\n\t\t\t\ttabindex: bind.to('tabindex')\n\t\t\t},\n\n\t\t\tchildren: [{\n\t\t\t\ttext: bind.to('label')\n\t\t\t}],\n\n\t\t\ton: {\n\t\t\t\tclick: bind.to('execute')\n\t\t\t}\n\t\t});\n\n\t\t/**\n   * The label of the list item.\n   *\n   * @observable\n   * @member {String} #label\n   */\n\n\t\t/**\n   * (Optional) The DOM style attribute of the list item.\n   *\n   * @observable\n   * @member {String} #style\n   */\n\n\t\t/**\n   * Fired when the list item has been clicked.\n   *\n   * @event #execute\n   */\n\t\treturn _this;\n\t}\n\n\t/**\n  * Focuses the list item.\n  */\n\n\n\t_createClass(ListItemView, [{\n\t\tkey: 'focus',\n\t\tvalue: function focus() {\n\t\t\tthis.element.focus();\n\t\t}\n\t}]);\n\n\treturn ListItemView;\n}(_view2.default);\n\nexports.default = ListItemView;\n\n/***/ }),\n/* 379 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if (\"value\" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };\n\nvar _view = __webpack_require__(7);\n\nvar _view2 = _interopRequireDefault(_view);\n\nvar _template = __webpack_require__(6);\n\nvar _template2 = _interopRequireDefault(_template);\n\nvar _focustracker = __webpack_require__(60);\n\nvar _focustracker2 = _interopRequireDefault(_focustracker);\n\nvar _focuscycler = __webpack_require__(120);\n\nvar _focuscycler2 = _interopRequireDefault(_focuscycler);\n\nvar _keystrokehandler = __webpack_require__(61);\n\nvar _keystrokehandler2 = _interopRequireDefault(_keystrokehandler);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module ui/list/listview\n */\n\n/**\n * The list view class.\n *\n * @extends module:ui/view~View\n */\nvar ListView = function (_View) {\n\t_inherits(ListView, _View);\n\n\t/**\n  * @inheritDoc\n  */\n\tfunction ListView() {\n\t\t_classCallCheck(this, ListView);\n\n\t\t/**\n   * Collection of the child list views.\n   *\n   * @readonly\n   * @member {module:ui/viewcollection~ViewCollection}\n   */\n\t\tvar _this = _possibleConstructorReturn(this, (ListView.__proto__ || Object.getPrototypeOf(ListView)).call(this));\n\n\t\t_this.items = _this.createCollection();\n\n\t\t/**\n   * Tracks information about DOM focus in the list.\n   *\n   * @readonly\n   * @member {module:utils/focustracker~FocusTracker}\n   */\n\t\t_this.focusTracker = new _focustracker2.default();\n\n\t\t/**\n   * Instance of the {@link module:core/keystrokehandler~KeystrokeHandler}.\n   *\n   * @readonly\n   * @member {module:core/keystrokehandler~KeystrokeHandler}\n   */\n\t\t_this.keystrokes = new _keystrokehandler2.default();\n\n\t\t/**\n   * Helps cycling over focusable {@link #items} in the list.\n   *\n   * @readonly\n   * @protected\n   * @member {module:ui/focuscycler~FocusCycler}\n   */\n\t\t_this._focusCycler = new _focuscycler2.default({\n\t\t\tfocusables: _this.items,\n\t\t\tfocusTracker: _this.focusTracker,\n\t\t\tkeystrokeHandler: _this.keystrokes,\n\t\t\tactions: {\n\t\t\t\t// Navigate list items backwards using the arrowup key.\n\t\t\t\tfocusPrevious: 'arrowup',\n\n\t\t\t\t// Navigate toolbar items forwards using the arrowdown key.\n\t\t\t\tfocusNext: 'arrowdown'\n\t\t\t}\n\t\t});\n\n\t\t_this.template = new _template2.default({\n\t\t\ttag: 'ul',\n\n\t\t\tattributes: {\n\t\t\t\tclass: ['ck-reset', 'ck-list']\n\t\t\t},\n\n\t\t\tchildren: _this.items\n\t\t});\n\n\t\t_this.items.on('add', function (evt, item) {\n\t\t\t_this.focusTracker.add(item.element);\n\t\t});\n\n\t\t_this.items.on('remove', function (evt, item) {\n\t\t\t_this.focusTracker.remove(item.element);\n\t\t});\n\t\treturn _this;\n\t}\n\n\t/**\n  * @inheritDoc\n  */\n\n\n\t_createClass(ListView, [{\n\t\tkey: 'init',\n\t\tvalue: function init() {\n\t\t\t// Start listening for the keystrokes coming from #element.\n\t\t\tthis.keystrokes.listenTo(this.element);\n\n\t\t\treturn _get(ListView.prototype.__proto__ || Object.getPrototypeOf(ListView.prototype), 'init', this).call(this);\n\t\t}\n\n\t\t/**\n   * Focuses the first focusable in {@link #items}.\n   */\n\n\t}, {\n\t\tkey: 'focus',\n\t\tvalue: function focus() {\n\t\t\tthis._focusCycler.focusFirst();\n\t\t}\n\n\t\t/**\n   * Focuses the last focusable in {@link #items}.\n   */\n\n\t}, {\n\t\tkey: 'focusLast',\n\t\tvalue: function focusLast() {\n\t\t\tthis._focusCycler.focusLast();\n\t\t}\n\t}]);\n\n\treturn ListView;\n}(_view2.default);\n\nexports.default = ListView;\n\n/***/ }),\n/* 380 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _extend = __webpack_require__(53);\n\nvar _extend2 = _interopRequireDefault(_extend);\n\nvar _mix = __webpack_require__(4);\n\nvar _mix2 = _interopRequireDefault(_mix);\n\nvar _observablemixin = __webpack_require__(31);\n\nvar _observablemixin2 = _interopRequireDefault(_observablemixin);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } } /**\n                                                                                                                                                           * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                           * For licensing, see LICENSE.md.\n                                                                                                                                                           */\n\n/**\n * @module ui/model\n */\n\n/**\n * The base MVC model class.\n *\n * @mixes module:utils/observablemixin~ObservableMixin\n */\nvar Model =\n/**\n * Creates a new Model instance.\n *\n * @param {Object} [attributes] The model state attributes to be defined during the instance creation.\n * @param {Object} [properties] The (out of state) properties to be appended to the instance during creation.\n */\nfunction Model(attributes, properties) {\n\t_classCallCheck(this, Model);\n\n\t// Extend this instance with the additional (out of state) properties.\n\tif (properties) {\n\t\t(0, _extend2.default)(this, properties);\n\t}\n\n\t// Initialize the attributes.\n\tif (attributes) {\n\t\tthis.set(attributes);\n\t}\n};\n\nexports.default = Model;\n\n\n(0, _mix2.default)(Model, _observablemixin2.default);\n\n/***/ }),\n/* 381 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if (\"value\" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };\n\nvar _global = __webpack_require__(59);\n\nvar _global2 = _interopRequireDefault(_global);\n\nvar _template = __webpack_require__(6);\n\nvar _template2 = _interopRequireDefault(_template);\n\nvar _toolbarview = __webpack_require__(188);\n\nvar _toolbarview2 = _interopRequireDefault(_toolbarview);\n\nvar _tounit = __webpack_require__(193);\n\nvar _tounit2 = _interopRequireDefault(_tounit);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module ui/toolbar/sticky/stickytoolbarview\n */\n\nvar toPx = (0, _tounit2.default)('px');\n\n/**\n * The sticky toolbar view class.\n *\n * @extends module:ui/toolbar/toolbarview~ToolbarView\n */\n\nvar StickyToolbarView = function (_ToolbarView) {\n\t_inherits(StickyToolbarView, _ToolbarView);\n\n\t/**\n  * @inheritDoc\n  */\n\tfunction StickyToolbarView(locale) {\n\t\t_classCallCheck(this, StickyToolbarView);\n\n\t\tvar _this = _possibleConstructorReturn(this, (StickyToolbarView.__proto__ || Object.getPrototypeOf(StickyToolbarView)).call(this, locale));\n\n\t\tvar bind = _this.bindTemplate;\n\n\t\t/**\n   * Controls whether the sticky toolbar should be active. When any editable\n   * is focused in the editor, toolbar becomes active.\n   *\n   * @readonly\n   * @observable\n   * @member {Boolean} #isActive\n   */\n\t\t_this.set('isActive', false);\n\n\t\t/**\n   * Controls whether the sticky toolbar is in the \"sticky\" state.\n   *\n   * @readonly\n   * @observable\n   * @member {Boolean} #isSticky\n   */\n\t\t_this.set('isSticky', false);\n\n\t\t/**\n   * The limiter element for the sticky toolbar instance. Its bounding rect limits\n   * the \"stickyness\" of the toolbar, i.e. when the toolbar reaches the bottom\n   * edge of the limiter, it becomes sticky to that edge and does not float\n   * off the limiter. It is mandatory for the toolbar to work properly and once\n   * set, it cannot be changed.\n   *\n   * @readonly\n   * @observable\n   * @member {HTMLElement} #limiterElement\n   */\n\t\t_this.set('limiterElement', null);\n\n\t\t/**\n   * The offset from the bottom edge of {@link #limiterElement}\n   * which stops the toolbar from stickying any further to prevent limiter's content\n   * from being completely covered.\n   *\n   * @readonly\n   * @observable\n   * @default 50\n   * @member {Number} #limiterOffset\n   */\n\t\t_this.set('limiterOffset', 50);\n\n\t\t/**\n   * Controls the `margin-left` CSS style of the toolbar.\n   *\n   * @protected\n   * @readonly\n   * @observable\n   * @member {String} #_marginLeft\n   */\n\t\t_this.set('_marginLeft', null);\n\n\t\t/**\n   * Set `true` if the sticky toolbar reached the bottom edge of the\n   * {@link #limiterElement}.\n   *\n   * @protected\n   * @readonly\n   * @observable\n   * @member {Boolean} #_isStickyToTheLimiter\n   */\n\t\t_this.set('_isStickyToTheLimiter', false);\n\n\t\t/**\n   * The DOM bounding client rect of the {@link module:ui/view~View#element} of the toolbar.\n   *\n   * @protected\n   * @member {Object} #_toolbarRect\n   */\n\n\t\t/**\n   * The DOM bounding client rect of the {@link #limiterElement}\n   * of the toolbar.\n   *\n   * @protected\n   * @member {Object} #_limiterRect\n   */\n\n\t\t_template2.default.extend(_this.template, {\n\t\t\tattributes: {\n\t\t\t\tclass: [\n\t\t\t\t// Toggle class of the toolbar when \"sticky\" state changes in the view.\n\t\t\t\tbind.if('isSticky', 'ck-toolbar_sticky'), bind.if('_isStickyToTheLimiter', 'ck-toolbar_sticky_bottom-limit')],\n\t\t\t\tstyle: {\n\t\t\t\t\twidth: bind.to('isSticky', function (isSticky) {\n\t\t\t\t\t\treturn isSticky ? toPx(_this._elementPlaceholder.getBoundingClientRect().width) : null;\n\t\t\t\t\t}),\n\n\t\t\t\t\tbottom: bind.to('_isStickyToTheLimiter', function (_isStickyToTheLimiter) {\n\t\t\t\t\t\treturn _isStickyToTheLimiter ? toPx(_this.limiterOffset) : null;\n\t\t\t\t\t}),\n\n\t\t\t\t\tmarginLeft: bind.to('_marginLeft')\n\t\t\t\t}\n\t\t\t}\n\t\t});\n\n\t\t/**\n   * A dummy element which visually fills the space as long as the\n   * actual toolbar is sticky. It prevents flickering of the UI.\n   *\n   * @private\n   * @property {HTMLElement}\n   */\n\t\t_this._elementPlaceholder = new _template2.default({\n\t\t\ttag: 'div',\n\t\t\tattributes: {\n\t\t\t\tclass: ['ck-toolbar__placeholder'],\n\t\t\t\tstyle: {\n\t\t\t\t\tdisplay: bind.to('isSticky', function (isSticky) {\n\t\t\t\t\t\treturn isSticky ? 'block' : 'none';\n\t\t\t\t\t}),\n\t\t\t\t\theight: bind.to('isSticky', function (isSticky) {\n\t\t\t\t\t\treturn isSticky ? toPx(_this._toolbarRect.height) : null;\n\t\t\t\t\t})\n\t\t\t\t}\n\t\t\t}\n\t\t}).render();\n\t\treturn _this;\n\t}\n\n\t/**\n  * @inheritDoc\n  */\n\n\n\t_createClass(StickyToolbarView, [{\n\t\tkey: 'init',\n\t\tvalue: function init() {\n\t\t\tvar _this2 = this;\n\n\t\t\t_get(StickyToolbarView.prototype.__proto__ || Object.getPrototypeOf(StickyToolbarView.prototype), 'init', this).call(this);\n\n\t\t\tthis.element.parentNode.insertBefore(this._elementPlaceholder, this.element);\n\n\t\t\t// Update sticky state of the toolbar as the window is being scrolled.\n\t\t\tthis.listenTo(_global2.default.window, 'scroll', function () {\n\t\t\t\t_this2._checkIfShouldBeSticky();\n\t\t\t});\n\n\t\t\t// Synchronize with `model.isActive` because sticking an inactive toolbar is pointless.\n\t\t\tthis.listenTo(this, 'change:isActive', function () {\n\t\t\t\t_this2._checkIfShouldBeSticky();\n\t\t\t});\n\t\t}\n\n\t\t/**\n   * Destroys the toolbar and removes the {@link #_elementPlaceholder}.\n   */\n\n\t}, {\n\t\tkey: 'destroy',\n\t\tvalue: function destroy() {\n\t\t\tvar _this3 = this;\n\n\t\t\treturn _get(StickyToolbarView.prototype.__proto__ || Object.getPrototypeOf(StickyToolbarView.prototype), 'destroy', this).call(this).then(function () {\n\t\t\t\t_this3._elementPlaceholder.remove();\n\t\t\t});\n\t\t}\n\n\t\t/**\n   * Analyzes the environment to decide whether the toolbar should\n   * be sticky or not.\n   *\n   * @protected\n   */\n\n\t}, {\n\t\tkey: '_checkIfShouldBeSticky',\n\t\tvalue: function _checkIfShouldBeSticky() {\n\t\t\tvar limiterRect = this._limiterRect = this.limiterElement.getBoundingClientRect();\n\t\t\tvar toolbarRect = this._toolbarRect = this.element.getBoundingClientRect();\n\n\t\t\t// The toolbar must be active to become sticky.\n\t\t\tthis.isSticky = this.isActive &&\n\t\t\t// The limiter's top edge must be beyond the upper edge of the visible viewport.\n\t\t\tlimiterRect.top < 0 &&\n\t\t\t// The model#limiterElement's height mustn't be smaller than the toolbar's height and model#limiterOffset.\n\t\t\t// There's no point in entering the sticky mode if the model#limiterElement is very, very small, because\n\t\t\t// it would immediately set model#_isStickyToTheLimiter true and, given model#limiterOffset, the toolbar\n\t\t\t// would be positioned before the model#limiterElement.\n\t\t\tthis._toolbarRect.height + this.limiterOffset < limiterRect.height;\n\n\t\t\t// Stick the toolbar to the top edge of the viewport simulating CSS position:sticky.\n\t\t\t// TODO: Possibly replaced by CSS in the future http://caniuse.com/#feat=css-sticky\n\t\t\tif (this.isSticky) {\n\t\t\t\tthis._isStickyToTheLimiter = limiterRect.bottom < toolbarRect.height + this.limiterOffset;\n\t\t\t\tthis._marginLeft = this._isStickyToTheLimiter ? null : toPx(-_global2.default.window.scrollX);\n\t\t\t}\n\t\t\t// Detach the toolbar from the top edge of the viewport.\n\t\t\telse {\n\t\t\t\t\tthis._isStickyToTheLimiter = false;\n\t\t\t\t\tthis._marginLeft = null;\n\t\t\t\t}\n\t\t}\n\t}]);\n\n\treturn StickyToolbarView;\n}(_toolbarview2.default);\n\nexports.default = StickyToolbarView;\n\n/***/ }),\n/* 382 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _view = __webpack_require__(7);\n\nvar _view2 = _interopRequireDefault(_view);\n\nvar _template = __webpack_require__(6);\n\nvar _template2 = _interopRequireDefault(_template);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module ui/toolbar/toolbarseparatorview\n */\n\n/**\n * The toolbar separator view class.\n *\n * @extends module:ui/view~View\n */\nvar ToolbarSeparatorView = function (_View) {\n\t_inherits(ToolbarSeparatorView, _View);\n\n\t/**\n  * @inheritDoc\n  */\n\tfunction ToolbarSeparatorView(locale) {\n\t\t_classCallCheck(this, ToolbarSeparatorView);\n\n\t\tvar _this = _possibleConstructorReturn(this, (ToolbarSeparatorView.__proto__ || Object.getPrototypeOf(ToolbarSeparatorView)).call(this, locale));\n\n\t\t_this.template = new _template2.default({\n\t\t\ttag: 'span',\n\t\t\tattributes: {\n\t\t\t\tclass: ['ck-toolbar__separator']\n\t\t\t}\n\t\t});\n\t\treturn _this;\n\t}\n\n\treturn ToolbarSeparatorView;\n}(_view2.default);\n\nexports.default = ToolbarSeparatorView;\n\n/***/ }),\n/* 383 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _basecommand = __webpack_require__(189);\n\nvar _basecommand2 = _interopRequireDefault(_basecommand);\n\nvar _transform = __webpack_require__(107);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module undo/redocommand\n */\n\n/**\n * The redo command stores {@link module:engine/model/batch~Batch batches} that were used to undo a batch by\n * {@link module:undo/undocommand~UndoCommand}. It is able to redo a previously undone batch by reversing the undoing\n * batches created by `UndoCommand`. The reversed batch is also transformed by batches from\n * {@link module:engine/model/document~Document#history history} that happened after it and are not other redo batches.\n *\n * The redo command also takes care of restoring the {@link module:engine/model/document~Document#selection document selection}\n * to the state before an undone batch was applied.\n *\n * @extends module:undo/basecommand~BaseCommand\n */\nvar RedoCommand = function (_BaseCommand) {\n\t_inherits(RedoCommand, _BaseCommand);\n\n\tfunction RedoCommand() {\n\t\t_classCallCheck(this, RedoCommand);\n\n\t\treturn _possibleConstructorReturn(this, (RedoCommand.__proto__ || Object.getPrototypeOf(RedoCommand)).apply(this, arguments));\n\t}\n\n\t_createClass(RedoCommand, [{\n\t\tkey: '_doExecute',\n\n\t\t/**\n   * Executes the command. This method reverts the last {@link module:engine/model/batch~Batch batch} added to\n   * the command's stack, applies the reverted and transformed version on the\n   * {@link module:engine/model/document~Document document} and removes the batch from the stack.\n   * Then, it restores the {@link module:engine/model/document~Document#selection document selection}.\n   *\n   * @protected\n   */\n\t\tvalue: function _doExecute() {\n\t\t\tvar _this2 = this;\n\n\t\t\tvar item = this._stack.pop();\n\n\t\t\t// All changes have to be done in one `enqueueChanges` callback so other listeners will not\n\t\t\t// step between consecutive deltas, or won't do changes to the document before selection is properly restored.\n\t\t\tthis.editor.document.enqueueChanges(function () {\n\t\t\t\tvar lastDelta = item.batch.deltas[item.batch.deltas.length - 1];\n\t\t\t\tvar nextBaseVersion = lastDelta.baseVersion + lastDelta.operations.length;\n\n\t\t\t\t// Selection state is from the moment after undo happened. It needs to be transformed by all the deltas\n\t\t\t\t// that happened after the selection state got saved. Unfortunately it is tricky, because those deltas\n\t\t\t\t// are already compressed in the history (they are removed).\n\t\t\t\t// Because of that we will transform the selection only by non-redo deltas\n\t\t\t\tvar deltas = Array.from(_this2.editor.document.history.getDeltas(nextBaseVersion)).filter(function (delta) {\n\t\t\t\t\treturn !_this2._createdBatches.has(delta.batch);\n\t\t\t\t});\n\n\t\t\t\t_this2._restoreSelection(item.selection.ranges, item.selection.isBackward, deltas);\n\t\t\t\t_this2._redo(item.batch);\n\t\t\t});\n\n\t\t\tthis.refreshState();\n\t\t}\n\n\t\t/**\n   * Redoes a batch by reversing the batch that has undone it, transforming that batch and applying it. This is\n   * a helper method for {@link #_doExecute}.\n   *\n   * @private\n   * @param {module:engine/model/batch~Batch} storedBatch The batch whose deltas will be reversed, transformed and applied.\n   */\n\n\t}, {\n\t\tkey: '_redo',\n\t\tvalue: function _redo(storedBatch) {\n\t\t\tvar document = this.editor.document;\n\n\t\t\t// All changes done by the command execution will be saved as one batch.\n\t\t\tvar redoingBatch = document.batch();\n\t\t\tthis._createdBatches.add(redoingBatch);\n\n\t\t\tvar deltasToRedo = storedBatch.deltas.slice();\n\t\t\tdeltasToRedo.reverse();\n\n\t\t\t// We will process each delta from `storedBatch`, in reverse order. If there was deltas A, B and C in stored batch,\n\t\t\t// we need to revert them in reverse order, so first reverse C, then B, then A.\n\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\tvar _didIteratorError = false;\n\t\t\tvar _iteratorError = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator = deltasToRedo[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\tvar deltaToRedo = _step.value;\n\n\t\t\t\t\t// Keep in mind that all algorithms return arrays. That's because the transformation might result in multiple\n\t\t\t\t\t// deltas, so we need arrays to handle them anyway. To simplify algorithms, it is better to always have arrays\n\t\t\t\t\t// in mind. For simplicity reasons, we will use singular form in descriptions and names.\n\n\t\t\t\t\tvar nextBaseVersion = deltaToRedo.baseVersion + deltaToRedo.operations.length;\n\n\t\t\t\t\t// As stated above, convert delta to array of deltas.\n\t\t\t\t\tvar reversedDelta = [deltaToRedo.getReversed()];\n\n\t\t\t\t\t// 1. Transform that delta by deltas from history that happened after it.\n\t\t\t\t\t// Omit deltas from \"redo\" batches, because reversed delta already bases on them. Transforming by them\n\t\t\t\t\t// again will result in incorrect deltas.\n\t\t\t\t\tvar _iteratorNormalCompletion2 = true;\n\t\t\t\t\tvar _didIteratorError2 = false;\n\t\t\t\t\tvar _iteratorError2 = undefined;\n\n\t\t\t\t\ttry {\n\t\t\t\t\t\tfor (var _iterator2 = document.history.getDeltas(nextBaseVersion)[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {\n\t\t\t\t\t\t\tvar historyDelta = _step2.value;\n\n\t\t\t\t\t\t\tif (!this._createdBatches.has(historyDelta.batch)) {\n\t\t\t\t\t\t\t\treversedDelta = (0, _transform.transformDeltaSets)(reversedDelta, [historyDelta], true).deltasA;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\t// 2. After reversed delta has been transformed by all history deltas, apply it.\n\t\t\t\t\t} catch (err) {\n\t\t\t\t\t\t_didIteratorError2 = true;\n\t\t\t\t\t\t_iteratorError2 = err;\n\t\t\t\t\t} finally {\n\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\tif (!_iteratorNormalCompletion2 && _iterator2.return) {\n\t\t\t\t\t\t\t\t_iterator2.return();\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} finally {\n\t\t\t\t\t\t\tif (_didIteratorError2) {\n\t\t\t\t\t\t\t\tthrow _iteratorError2;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t\tvar _iteratorNormalCompletion3 = true;\n\t\t\t\t\tvar _didIteratorError3 = false;\n\t\t\t\t\tvar _iteratorError3 = undefined;\n\n\t\t\t\t\ttry {\n\t\t\t\t\t\tfor (var _iterator3 = reversedDelta[Symbol.iterator](), _step3; !(_iteratorNormalCompletion3 = (_step3 = _iterator3.next()).done); _iteratorNormalCompletion3 = true) {\n\t\t\t\t\t\t\tvar delta = _step3.value;\n\n\t\t\t\t\t\t\t// Fix base version.\n\t\t\t\t\t\t\tdelta.baseVersion = document.version;\n\n\t\t\t\t\t\t\t// Before applying, add the delta to the `redoingBatch`.\n\t\t\t\t\t\t\tredoingBatch.addDelta(delta);\n\n\t\t\t\t\t\t\t// Now, apply all operations of the delta.\n\t\t\t\t\t\t\tvar _iteratorNormalCompletion4 = true;\n\t\t\t\t\t\t\tvar _didIteratorError4 = false;\n\t\t\t\t\t\t\tvar _iteratorError4 = undefined;\n\n\t\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\t\tfor (var _iterator4 = delta.operations[Symbol.iterator](), _step4; !(_iteratorNormalCompletion4 = (_step4 = _iterator4.next()).done); _iteratorNormalCompletion4 = true) {\n\t\t\t\t\t\t\t\t\tvar operation = _step4.value;\n\n\t\t\t\t\t\t\t\t\tdocument.applyOperation(operation);\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t} catch (err) {\n\t\t\t\t\t\t\t\t_didIteratorError4 = true;\n\t\t\t\t\t\t\t\t_iteratorError4 = err;\n\t\t\t\t\t\t\t} finally {\n\t\t\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\t\t\tif (!_iteratorNormalCompletion4 && _iterator4.return) {\n\t\t\t\t\t\t\t\t\t\t_iterator4.return();\n\t\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\t} finally {\n\t\t\t\t\t\t\t\t\tif (_didIteratorError4) {\n\t\t\t\t\t\t\t\t\t\tthrow _iteratorError4;\n\t\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t} catch (err) {\n\t\t\t\t\t\t_didIteratorError3 = true;\n\t\t\t\t\t\t_iteratorError3 = err;\n\t\t\t\t\t} finally {\n\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\tif (!_iteratorNormalCompletion3 && _iterator3.return) {\n\t\t\t\t\t\t\t\t_iterator3.return();\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} finally {\n\t\t\t\t\t\t\tif (_didIteratorError3) {\n\t\t\t\t\t\t\t\tthrow _iteratorError3;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError = true;\n\t\t\t\t_iteratorError = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}]);\n\n\treturn RedoCommand;\n}(_basecommand2.default);\n\nexports.default = RedoCommand;\n\n/***/ }),\n/* 384 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _plugin = __webpack_require__(2);\n\nvar _plugin2 = _interopRequireDefault(_plugin);\n\nvar _undoengine = __webpack_require__(386);\n\nvar _undoengine2 = _interopRequireDefault(_undoengine);\n\nvar _buttonview = __webpack_require__(25);\n\nvar _buttonview2 = _interopRequireDefault(_buttonview);\n\nvar _undo = __webpack_require__(520);\n\nvar _undo2 = _interopRequireDefault(_undo);\n\nvar _redo = __webpack_require__(519);\n\nvar _redo2 = _interopRequireDefault(_redo);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module undo/undo\n */\n\n/**\n * The undo feature. It introduces the Undo and Redo buttons to the editor.\n *\n * Below is the explanation of the undo mechanism working together with {@link module:engine/model/history~History History}:\n *\n * Whenever a {@link module:engine/model/delta/delta~Delta delta} is applied to the\n * {@link module:engine/model/document~Document document}, it is saved to `History` as is.\n * The {@link module:engine/model/batch~Batch batch} that owns that delta is also saved, in\n * {@link module:undo/undocommand~UndoCommand}, together with the selection that was present in the document before the\n * delta was applied. A batch is saved instead of the delta because changes are undone batch-by-batch, not delta-by-delta\n * and a batch is seen as one undo step.\n *\n * After some changes happen to the document, the `History` and `UndoCommand` stack can be represented as follows:\n *\n *\t\t  History                           Undo stack\n *\t\t===========             ==================================\n *\t\t[delta A1]              [batch A with selection before A1]\n *\t\t[delta B1]              [batch B with selection before B1]\n *\t\t[delta B2]              [batch C with selection before C1]\n *\t\t[delta C1]\n *\t\t[delta C2]\n *\t\t[delta B3]\n *\t\t[delta C3]\n *\n * Where deltas starting with the same letter are from same batch.\n *\n * Undoing a batch means that a set of deltas which will reverse the effects of that batch needs to be generated. For example, if a batch\n * added several letters, undoing the batch should remove them. It is important to apply undoing deltas in the reversed order,\n * so if a batch has delta `X`, `Y`, `Z`, reversed deltas `Zr`, `Yr` and `Xr` need to be applied. Otherwise reversed delta\n * `Xr` would operate on a wrong document state, because delta `X` does not know that deltas `Y` and `Z` happened.\n *\n * After deltas from an undone batch got {@link module:engine/model/delta/delta~Delta#getReversed reversed},\n * one needs to make sure if they are ready to be applied. In the scenario above, delta `C3` is the last delta and `C3r`\n * bases on up-to-date document state, so it can be applied to the document.\n *\n *\t\t  History                           Undo stack\n *\t\t===========             ==================================\n *\t\t[delta A1 ]             [batch A with selection before A1]\n *\t\t[delta B1 ]             [batch B with selection before B1]\n *\t\t[delta B2 ]             [   processing undoing batch C   ]\n *\t\t[delta C1 ]\n *\t\t[delta C2 ]\n *\t\t[delta B3 ]\n *\t\t[delta C3 ]\n *\t\t[delta C3r]\n *\n * Next is delta `C2`, reversed to `C2r`. `C2r` bases on `C2`, so it bases on the wrong document state. It needs to be\n * transformed by deltas from history that happened after it, so it \"knows\" about them. Let us assume that `C2' = C2r * B3 * C3 * C3r`,\n * where `*` means \"transformed by\". As can be seen, `C2r` is transformed by a delta which is undone afterwards anyway.\n * This brings two problems: lower effectiveness (obvious) and incorrect results. Bad results come from the fact that\n * operational transformation algorithms assume there is no connection between two transformed operations when resolving\n * conflicts, which is true for example for collaborative editing, but is not true for the undo algorithm.\n *\n * To prevent both problems, `History` introduces an API to {@link module:engine/model/history~History#removeDelta remove}\n * deltas from history. It is used to remove undone and undoing deltas after they are applied. It feels right &mdash; since when a\n * delta is undone or reversed, it is \"removed\" and there should be no sign of it in the history (fig. 1).\n *\n * Notes:\n *\n * * `---` symbolizes a removed delta.\n * * `'` symbolizes a reversed delta that was later transformed.\n *\n *\t\tHistory (fig. 1)            History (fig. 2)            History (fig. 3)\n *\t\t================            ================            ================\n *\t\t   [delta A1]                  [delta A1]                  [delta A1]\n *\t\t   [delta B1]                  [delta B1]                  [delta B1]\n *\t\t   [delta B2]                  [delta B2]                  [delta B2]\n *\t\t   [delta C1]                  [delta C1]                  [---C1---]\n *\t\t   [delta C2]                  [---C2---]                  [---C2---]\n *\t\t   [delta B3]                  [delta B3]                  [delta B3]\n *\t\t   [---C3---]                  [---C3---]                  [---C3---]\n *\t\t   [---C3r--]                  [---C3r--]                  [---C3r--]\n *\t\t                               [---C2'--]                  [---C2'--]\n *\t\t                                                           [---C1'--]\n *\n * `C2r` can now be transformed only by `B3` and both `C2'` and `C2` can be removed (fig. 2). Same with `C1` (fig. 3).\n *\n * But what about that selection? For batch `C`, undo feature remembers the selection just before `C1` was applied. It can be\n * visualized between delta `B2` and `B3` (see fig. 3). As can be seen, some operations were applied to the document since the selection\n * state was remembered. Setting the document selection as it was remembered would be incorrect. It feels natural that\n * the selection state should also be transformed by deltas from history. The same pattern applies as with transforming deltas &mdash;\n * ranges should not be transformed by undone and undoing deltas. Thankfully, those deltas are already removed from history.\n *\n * Unfortunately, a problem appears with delta `B3`. It still remembers the context of deltas `C2` and `C1` on which it bases.\n * It is an obvious error &mdash; transforming by that delta would lead to incorrect results or \"repeating\" history would\n * produce a different document than the actual one.\n *\n * To prevent this situation, `B3` needs to also be {@link module:engine/model/history~History#updateDelta updated} in history.\n * It should be kept in a state that \"does not remember\" deltas that were removed from history. It is easily\n * achieved while transforming the reversed delta. For example, when `C2r` is transformed by `B3`, at the same time `B3` is\n * transformed by `C2r`. Transforming `B3` that remembers `C2` by a delta reversing `C2` effectively makes `B3` \"forget\" about `C2`.\n * By doing these transformations you effectively make `B3` base on `B2` which is the correct state of history (fig. 4).\n *\n *\t\t     History (fig. 4)                         History (fig. 5)\n *\t\t===========================            ===============================\n *\t\t        [delta A1]                               [---A1---]\n *\t\t        [delta B1]                         [delta B1 \"without A1\"]\n *\t\t        [delta B2]                         [delta B2 \"without A1\"]\n *\t\t        [---C1---]                               [---C1---]\n *\t\t        [---C2---]                               [---C2---]\n *\t\t[delta B3 \"without C2, C1\"]            [delta B3 \"without C2, C1, A1\"]\n *\t\t        [---C3---]                               [---C3---]\n *\t\t        [---C3r--]                               [---C3r--]\n *\t\t        [---C2'--]                               [---C2'--]\n *\t\t        [---C1'--]                               [---C1'--]\n *\t\t                                                 [---A1'--]\n *\n * Selective undo works on the same basis, however, instead of undoing the last batch in the undo stack, any batch can be undone.\n * The same algorithm applies: deltas from a batch (i.e. `A1`) are reversed and then transformed by deltas stored in history,\n * simultaneously updating them. Then deltas are applied to the document and removed from history (fig. 5).\n *\n * @extends module:core/plugin~Plugin\n */\nvar Undo = function (_Plugin) {\n  _inherits(Undo, _Plugin);\n\n  function Undo() {\n    _classCallCheck(this, Undo);\n\n    return _possibleConstructorReturn(this, (Undo.__proto__ || Object.getPrototypeOf(Undo)).apply(this, arguments));\n  }\n\n  _createClass(Undo, [{\n    key: 'init',\n\n\n    /**\n     * @inheritDoc\n     */\n    value: function init() {\n      var editor = this.editor;\n      var t = editor.t;\n\n      this._addButton('undo', t('Undo'), 'CTRL+Z', _undo2.default);\n      this._addButton('redo', t('Redo'), 'CTRL+Y', _redo2.default);\n\n      editor.keystrokes.set('CTRL+Z', 'undo');\n      editor.keystrokes.set('CTRL+Y', 'redo');\n      editor.keystrokes.set('CTRL+SHIFT+Z', 'redo');\n    }\n\n    /**\n     * Creates a button for the specified command.\n     *\n     * @private\n     * @param {String} name Command name.\n     * @param {String} label Button label.\n     * @param {String} keystroke Command keystroke.\n     * @param {String} Icon Source of the icon.\n     */\n\n  }, {\n    key: '_addButton',\n    value: function _addButton(name, label, keystroke, Icon) {\n      var _this2 = this;\n\n      var editor = this.editor;\n      var command = editor.commands.get(name);\n\n      editor.ui.componentFactory.add(name, function (locale) {\n        var view = new _buttonview2.default(locale);\n\n        view.set({\n          label: label,\n          icon: Icon,\n          keystroke: keystroke,\n          tooltip: true\n        });\n\n        view.bind('isEnabled').to(command, 'isEnabled');\n\n        _this2.listenTo(view, 'execute', function () {\n          return editor.execute(name);\n        });\n\n        return view;\n      });\n    }\n  }], [{\n    key: 'requires',\n\n    /**\n     * @inheritDoc\n     */\n    get: function get() {\n      return [_undoengine2.default];\n    }\n  }]);\n\n  return Undo;\n}(_plugin2.default);\n\nexports.default = Undo;\n\n/***/ }),\n/* 385 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _basecommand = __webpack_require__(189);\n\nvar _basecommand2 = _interopRequireDefault(_basecommand);\n\nvar _transform = __webpack_require__(107);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module undo/undocommand\n */\n\n/**\n * The undo command stores {@link module:engine/model/batch~Batch batches} applied to the\n * {@link module:engine/model/document~Document document} and is able to undo a batch by reversing it and transforming by\n * other batches from {@link module:engine/model/document~Document#history history} that happened after the reversed batch.\n *\n * The undo command also takes care of restoring the {@link module:engine/model/document~Document#selection document selection}\n * to the state before the undone batch was applied.\n *\n * @extends module:undo/basecommand~BaseCommand\n */\nvar UndoCommand = function (_BaseCommand) {\n\t_inherits(UndoCommand, _BaseCommand);\n\n\tfunction UndoCommand() {\n\t\t_classCallCheck(this, UndoCommand);\n\n\t\treturn _possibleConstructorReturn(this, (UndoCommand.__proto__ || Object.getPrototypeOf(UndoCommand)).apply(this, arguments));\n\t}\n\n\t_createClass(UndoCommand, [{\n\t\tkey: '_doExecute',\n\n\t\t/**\n   * Executes the command. This method reverts a {@link module:engine/model/batch~Batch batch} added to the command's stack, transforms\n   * and applies the reverted version on the {@link module:engine/model/document~Document document} and removes the batch from the stack.\n   * Then, it restores the {@link module:engine/model/document~Document#selection document selection}.\n   *\n   * @protected\n   * @fires revert\n   * @param {module:engine/model/batch~Batch} [batch] A batch that should be undone. If not set, the last added batch will be undone.\n   */\n\t\tvalue: function _doExecute() {\n\t\t\tvar _this2 = this;\n\n\t\t\tvar batch = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : null;\n\n\t\t\t// If batch is not given, set `batchIndex` to the last index in command stack.\n\t\t\tvar batchIndex = batch ? this._stack.findIndex(function (a) {\n\t\t\t\treturn a.batch == batch;\n\t\t\t}) : this._stack.length - 1;\n\n\t\t\tvar item = this._stack.splice(batchIndex, 1)[0];\n\n\t\t\t// All changes has to be done in one `enqueueChanges` callback so other listeners will not\n\t\t\t// step between consecutive deltas, or won't do changes to the document before selection is properly restored.\n\t\t\tthis.editor.document.enqueueChanges(function () {\n\t\t\t\tvar undoingBatch = _this2._undo(item.batch);\n\n\t\t\t\tvar deltas = _this2.editor.document.history.getDeltas(item.batch.baseVersion);\n\t\t\t\t_this2._restoreSelection(item.selection.ranges, item.selection.isBackward, deltas);\n\n\t\t\t\t_this2.fire('revert', item.batch, undoingBatch);\n\t\t\t});\n\n\t\t\tthis.refreshState();\n\t\t}\n\n\t\t/**\n   * Returns an index in {@link module:undo/basecommand~BaseCommand#_stack} pointing to the item that is storing a\n   * batch that has a given {@link module:engine/model/batch~Batch#baseVersion}.\n   *\n   * @private\n   * @param {Number} baseVersion The base version of the batch to find.\n   * @returns {Number|null}\n   */\n\n\t}, {\n\t\tkey: '_getItemIndexFromBaseVersion',\n\t\tvalue: function _getItemIndexFromBaseVersion(baseVersion) {\n\t\t\tfor (var i = 0; i < this._stack.length; i++) {\n\t\t\t\tif (this._stack[i].batch.baseVersion == baseVersion) {\n\t\t\t\t\treturn i;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn null;\n\t\t}\n\n\t\t/**\n   * Undoes a batch by reversing a batch from history, transforming that reversed batch and applying it. This is\n   * a helper method for {@link #_doExecute}.\n   *\n   * @private\n   * @param {module:engine/model/batch~Batch} batchToUndo A batch whose deltas will be reversed, transformed and applied.\n   */\n\n\t}, {\n\t\tkey: '_undo',\n\t\tvalue: function _undo(batchToUndo) {\n\t\t\tvar document = this.editor.document;\n\n\t\t\t// All changes done by the command execution will be saved as one batch.\n\t\t\tvar undoingBatch = document.batch();\n\t\t\tthis._createdBatches.add(undoingBatch);\n\n\t\t\tvar history = document.history;\n\t\t\tvar deltasToUndo = batchToUndo.deltas.slice();\n\t\t\tdeltasToUndo.reverse();\n\n\t\t\t// We will process each delta from `batchToUndo`, in reverse order. If there was deltas A, B and C in undone batch,\n\t\t\t// we need to revert them in reverse order, so first reverse C, then B, then A.\n\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\tvar _didIteratorError = false;\n\t\t\tvar _iteratorError = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator = deltasToUndo[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\tvar deltaToUndo = _step.value;\n\n\t\t\t\t\t// Keep in mind that all algorithms return arrays. That's because the transformation might result in multiple\n\t\t\t\t\t// deltas, so we need arrays to handle them anyway. To simplify algorithms, it is better to always have arrays\n\t\t\t\t\t// in mind. For simplicity reasons, we will use singular form in descriptions and names.\n\t\t\t\t\tvar baseVersion = deltaToUndo.baseVersion;\n\t\t\t\t\tvar nextBaseVersion = baseVersion + deltaToUndo.operations.length;\n\n\t\t\t\t\t// 1. Get updated version of the delta from the history.\n\t\t\t\t\t// Batch stored in the undo command might have an outdated version of the delta that should be undone.\n\t\t\t\t\t// To prevent errors, we will take an updated version of it from the history, basing on delta's `baseVersion`.\n\t\t\t\t\tvar updatedDeltaToUndo = history.getDelta(baseVersion);\n\n\t\t\t\t\t// This is a safe valve in case of not finding delta to undo in history. This may come up if that delta\n\t\t\t\t\t// got updated into no deltas, or removed from history.\n\t\t\t\t\tif (updatedDeltaToUndo === null) {\n\t\t\t\t\t\tcontinue;\n\t\t\t\t\t}\n\n\t\t\t\t\t// 2. Reverse delta from the history.\n\t\t\t\t\tupdatedDeltaToUndo.reverse();\n\t\t\t\t\tvar reversedDelta = [];\n\n\t\t\t\t\tvar _iteratorNormalCompletion2 = true;\n\t\t\t\t\tvar _didIteratorError2 = false;\n\t\t\t\t\tvar _iteratorError2 = undefined;\n\n\t\t\t\t\ttry {\n\t\t\t\t\t\tfor (var _iterator2 = updatedDeltaToUndo[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {\n\t\t\t\t\t\t\tvar delta = _step2.value;\n\n\t\t\t\t\t\t\treversedDelta.push(delta.getReversed());\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\t// Stores history deltas transformed by `deltaToUndo`. Will be used later for updating document history.\n\t\t\t\t\t} catch (err) {\n\t\t\t\t\t\t_didIteratorError2 = true;\n\t\t\t\t\t\t_iteratorError2 = err;\n\t\t\t\t\t} finally {\n\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\tif (!_iteratorNormalCompletion2 && _iterator2.return) {\n\t\t\t\t\t\t\t\t_iterator2.return();\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} finally {\n\t\t\t\t\t\t\tif (_didIteratorError2) {\n\t\t\t\t\t\t\t\tthrow _iteratorError2;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t\tvar updatedHistoryDeltas = {};\n\n\t\t\t\t\t// 3. Transform reversed delta by history deltas that happened after delta to undo. We have to bring\n\t\t\t\t\t// reversed delta to the current state of document. While doing this, we will also update history deltas\n\t\t\t\t\t// to the state which \"does not remember\" delta that we undo.\n\t\t\t\t\tvar _iteratorNormalCompletion3 = true;\n\t\t\t\t\tvar _didIteratorError3 = false;\n\t\t\t\t\tvar _iteratorError3 = undefined;\n\n\t\t\t\t\ttry {\n\t\t\t\t\t\tfor (var _iterator3 = history.getDeltas(nextBaseVersion)[Symbol.iterator](), _step3; !(_iteratorNormalCompletion3 = (_step3 = _iterator3.next()).done); _iteratorNormalCompletion3 = true) {\n\t\t\t\t\t\t\tvar historyDelta = _step3.value;\n\n\t\t\t\t\t\t\t// 3.1. Transform selection range stored with history batch by reversed delta.\n\t\t\t\t\t\t\t// It is important to keep stored selection ranges updated. As we are removing and updating deltas in the history,\n\t\t\t\t\t\t\t// selection ranges would base on outdated history state.\n\t\t\t\t\t\t\tvar itemIndex = this._getItemIndexFromBaseVersion(historyDelta.baseVersion);\n\n\t\t\t\t\t\t\t// `itemIndex` will be `null` for `historyDelta` if it is not the first delta in it's batch.\n\t\t\t\t\t\t\t// This is fine, because we want to transform each selection only once, before transforming reversed delta\n\t\t\t\t\t\t\t// by the first delta of the batch connected with the ranges.\n\t\t\t\t\t\t\tif (itemIndex !== null) {\n\t\t\t\t\t\t\t\tthis._stack[itemIndex].selection.ranges = (0, _basecommand.transformRangesByDeltas)(this._stack[itemIndex].selection.ranges, reversedDelta);\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t// 3.2. Transform reversed delta by history delta and vice-versa.\n\t\t\t\t\t\t\tvar results = (0, _transform.transformDeltaSets)(reversedDelta, [historyDelta], true);\n\n\t\t\t\t\t\t\treversedDelta = results.deltasA;\n\t\t\t\t\t\t\tvar updatedHistoryDelta = results.deltasB;\n\n\t\t\t\t\t\t\t// 3.3. Store updated history delta. Later, it will be updated in `history`.\n\t\t\t\t\t\t\tif (!updatedHistoryDeltas[historyDelta.baseVersion]) {\n\t\t\t\t\t\t\t\tupdatedHistoryDeltas[historyDelta.baseVersion] = [];\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\tupdatedHistoryDeltas[historyDelta.baseVersion] = updatedHistoryDeltas[historyDelta.baseVersion].concat(updatedHistoryDelta);\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\t// 4. After reversed delta has been transformed by all history deltas, apply it.\n\t\t\t\t\t} catch (err) {\n\t\t\t\t\t\t_didIteratorError3 = true;\n\t\t\t\t\t\t_iteratorError3 = err;\n\t\t\t\t\t} finally {\n\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\tif (!_iteratorNormalCompletion3 && _iterator3.return) {\n\t\t\t\t\t\t\t\t_iterator3.return();\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} finally {\n\t\t\t\t\t\t\tif (_didIteratorError3) {\n\t\t\t\t\t\t\t\tthrow _iteratorError3;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t\tvar _iteratorNormalCompletion4 = true;\n\t\t\t\t\tvar _didIteratorError4 = false;\n\t\t\t\t\tvar _iteratorError4 = undefined;\n\n\t\t\t\t\ttry {\n\t\t\t\t\t\tfor (var _iterator4 = reversedDelta[Symbol.iterator](), _step4; !(_iteratorNormalCompletion4 = (_step4 = _iterator4.next()).done); _iteratorNormalCompletion4 = true) {\n\t\t\t\t\t\t\tvar _delta = _step4.value;\n\n\t\t\t\t\t\t\t// Fix base version.\n\t\t\t\t\t\t\t_delta.baseVersion = document.version;\n\n\t\t\t\t\t\t\t// Before applying, add the delta to the `undoingBatch`.\n\t\t\t\t\t\t\tundoingBatch.addDelta(_delta);\n\n\t\t\t\t\t\t\t// Now, apply all operations of the delta.\n\t\t\t\t\t\t\tvar _iteratorNormalCompletion6 = true;\n\t\t\t\t\t\t\tvar _didIteratorError6 = false;\n\t\t\t\t\t\t\tvar _iteratorError6 = undefined;\n\n\t\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\t\tfor (var _iterator6 = _delta.operations[Symbol.iterator](), _step6; !(_iteratorNormalCompletion6 = (_step6 = _iterator6.next()).done); _iteratorNormalCompletion6 = true) {\n\t\t\t\t\t\t\t\t\tvar operation = _step6.value;\n\n\t\t\t\t\t\t\t\t\tdocument.applyOperation(operation);\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t} catch (err) {\n\t\t\t\t\t\t\t\t_didIteratorError6 = true;\n\t\t\t\t\t\t\t\t_iteratorError6 = err;\n\t\t\t\t\t\t\t} finally {\n\t\t\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\t\t\tif (!_iteratorNormalCompletion6 && _iterator6.return) {\n\t\t\t\t\t\t\t\t\t\t_iterator6.return();\n\t\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\t} finally {\n\t\t\t\t\t\t\t\t\tif (_didIteratorError6) {\n\t\t\t\t\t\t\t\t\t\tthrow _iteratorError6;\n\t\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\t// 5. Remove reversed delta from the history.\n\t\t\t\t\t} catch (err) {\n\t\t\t\t\t\t_didIteratorError4 = true;\n\t\t\t\t\t\t_iteratorError4 = err;\n\t\t\t\t\t} finally {\n\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\tif (!_iteratorNormalCompletion4 && _iterator4.return) {\n\t\t\t\t\t\t\t\t_iterator4.return();\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} finally {\n\t\t\t\t\t\t\tif (_didIteratorError4) {\n\t\t\t\t\t\t\t\tthrow _iteratorError4;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t\thistory.removeDelta(baseVersion);\n\n\t\t\t\t\t// And all deltas that are reversing it.\n\t\t\t\t\t// So the history looks like both original and reversing deltas never happened.\n\t\t\t\t\t// That's why we have to update history deltas - some of them might have been basing on deltas that we are now removing.\n\t\t\t\t\tvar _iteratorNormalCompletion5 = true;\n\t\t\t\t\tvar _didIteratorError5 = false;\n\t\t\t\t\tvar _iteratorError5 = undefined;\n\n\t\t\t\t\ttry {\n\t\t\t\t\t\tfor (var _iterator5 = reversedDelta[Symbol.iterator](), _step5; !(_iteratorNormalCompletion5 = (_step5 = _iterator5.next()).done); _iteratorNormalCompletion5 = true) {\n\t\t\t\t\t\t\tvar _delta2 = _step5.value;\n\n\t\t\t\t\t\t\thistory.removeDelta(_delta2.baseVersion);\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\t// 6. Update history deltas in history.\n\t\t\t\t\t} catch (err) {\n\t\t\t\t\t\t_didIteratorError5 = true;\n\t\t\t\t\t\t_iteratorError5 = err;\n\t\t\t\t\t} finally {\n\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\tif (!_iteratorNormalCompletion5 && _iterator5.return) {\n\t\t\t\t\t\t\t\t_iterator5.return();\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} finally {\n\t\t\t\t\t\t\tif (_didIteratorError5) {\n\t\t\t\t\t\t\t\tthrow _iteratorError5;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t\tfor (var historyBaseVersion in updatedHistoryDeltas) {\n\t\t\t\t\t\thistory.updateDelta(Number(historyBaseVersion), updatedHistoryDeltas[historyBaseVersion]);\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError = true;\n\t\t\t\t_iteratorError = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn undoingBatch;\n\t\t}\n\t}]);\n\n\treturn UndoCommand;\n}(_basecommand2.default);\n\n/**\n * Fired when execution of the command reverts some batch.\n *\n * @event revert\n */\n\n\nexports.default = UndoCommand;\n\n/***/ }),\n/* 386 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _plugin = __webpack_require__(2);\n\nvar _plugin2 = _interopRequireDefault(_plugin);\n\nvar _undocommand = __webpack_require__(385);\n\nvar _undocommand2 = _interopRequireDefault(_undocommand);\n\nvar _redocommand = __webpack_require__(383);\n\nvar _redocommand2 = _interopRequireDefault(_redocommand);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                */\n\n/**\n * @module undo/undoengine\n */\n\n/**\n * The undo engine feature.\n *\n * Undo brings in possibility to undo and redo changes done in the model by deltas through\n * the {@link module:engine/model/document~Document#batch Batch API}.\n *\n * @extends module:core/plugin~Plugin\n */\nvar UndoEngine = function (_Plugin) {\n\t_inherits(UndoEngine, _Plugin);\n\n\t/**\n  * @inheritDoc\n  */\n\tfunction UndoEngine(editor) {\n\t\t_classCallCheck(this, UndoEngine);\n\n\t\t/**\n   * The command that manages undo {@link module:engine/model/batch~Batch batches} stack (history).\n   * Created and registered during the {@link #init feature initialization}.\n   *\n   * @private\n   * @member {undo.UndoEngineCommand} #_undoCommand\n   */\n\n\t\t/**\n   * The command that manages redo {@link module:engine/model/batch~Batch batches} stack (history).\n   * Created and registered during the {@link #init feature initialization}.\n   *\n   * @private\n   * @member {undo.UndoEngineCommand} #_redoCommand\n   */\n\n\t\t/**\n   * Keeps track of which batches were registered in undo.\n   *\n   * @private\n   * @member {WeakSet.<module:engine/model/batch~Batch>}\n   */\n\t\tvar _this = _possibleConstructorReturn(this, (UndoEngine.__proto__ || Object.getPrototypeOf(UndoEngine)).call(this, editor));\n\n\t\t_this._batchRegistry = new WeakSet();\n\t\treturn _this;\n\t}\n\n\t/**\n  * @inheritDoc\n  */\n\n\n\t_createClass(UndoEngine, [{\n\t\tkey: 'init',\n\t\tvalue: function init() {\n\t\t\tvar _this2 = this;\n\n\t\t\t// Create commands.\n\t\t\tthis._undoCommand = new _undocommand2.default(this.editor);\n\t\t\tthis._redoCommand = new _redocommand2.default(this.editor);\n\n\t\t\t// Register command to the editor.\n\t\t\tthis.editor.commands.set('undo', this._undoCommand);\n\t\t\tthis.editor.commands.set('redo', this._redoCommand);\n\n\t\t\tthis.listenTo(this.editor.document, 'change', function (evt, type, changes, batch) {\n\t\t\t\t// If changes are not a part of a batch or this is not a new batch, omit those changes.\n\t\t\t\tif (_this2._batchRegistry.has(batch) || batch.type == 'transparent') {\n\t\t\t\t\treturn;\n\t\t\t\t} else {\n\t\t\t\t\tif (_this2._redoCommand._createdBatches.has(batch)) {\n\t\t\t\t\t\t// If this batch comes from `redoCommand`, add it to `undoCommand` stack.\n\t\t\t\t\t\t_this2._undoCommand.addBatch(batch);\n\t\t\t\t\t} else if (!_this2._undoCommand._createdBatches.has(batch)) {\n\t\t\t\t\t\t// A default batch - these are new changes in the document, not introduced by undo feature.\n\t\t\t\t\t\t// Add them to `undoCommand` stack and clear `redoCommand` stack.\n\t\t\t\t\t\t_this2._undoCommand.addBatch(batch);\n\t\t\t\t\t\t_this2._redoCommand.clearStack();\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\t// Add the batch to the registry so it will not be processed again.\n\t\t\t\t_this2._batchRegistry.add(batch);\n\t\t\t}, { priority: 'highest' });\n\n\t\t\tthis.listenTo(this._undoCommand, 'revert', function (evt, undoneBatch, undoingBatch) {\n\t\t\t\t_this2._redoCommand.addBatch(undoingBatch);\n\t\t\t});\n\t\t}\n\t}]);\n\n\treturn UndoEngine;\n}(_plugin2.default);\n\nexports.default = UndoEngine;\n\n/***/ }),\n/* 387 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module utils/config\n */\n\nvar _isPlainObject = __webpack_require__(97);\n\nvar _isPlainObject2 = _interopRequireDefault(_isPlainObject);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * Handles a configuration dictionary.\n */\nvar Config = function () {\n\t/**\n  * Creates an instance of the {@link ~Config} class.\n  *\n  * @param {Object} [configurations] The initial configurations to be set. Usually, provided by the user.\n  * @param {Object} [defaultConfigurations] The default configurations. Usually, provided by the system.\n  */\n\tfunction Config(configurations, defaultConfigurations) {\n\t\t_classCallCheck(this, Config);\n\n\t\t/**\n   * Store for the whole configuration.\n   *\n   * @private\n   * @member {Object}\n   */\n\t\tthis._config = {};\n\n\t\t// Set default configuration.\n\t\tif (defaultConfigurations) {\n\t\t\tthis.define(defaultConfigurations);\n\t\t}\n\n\t\t// Set initial configuration.\n\t\tif (configurations) {\n\t\t\tthis._setObjectToTarget(this._config, configurations);\n\t\t}\n\t}\n\n\t/**\n  * Set configuration values.\n  *\n  * It accepts both a name/value pair or an object, which properties and values will be used to set\n  * configurations.\n  *\n  * It also accepts setting a \"deep configuration\" by using dots in the name. For example, `'resize.width'` sets\n  * the value for the `width` configuration in the `resize` subset.\n  *\n  *\t\tconfig.set( 'width', 500 );\n  *\t\tconfig.set( 'toolbar.collapsed', true );\n  *\n  *\t\t// Equivalent to:\n  *\t\tconfig.set( {\n  *\t\t\twidth: 500\n  *\t\t\ttoolbar: {\n  *\t\t\t\tcollapsed: true\n  *\t\t\t}\n  *\t\t} );\n  *\n  * Passing an object as the value will amend the configuration, not replace it.\n  *\n  *\t\tconfig.set( 'toolbar', {\n  *\t\t\tcollapsed: true,\n  *\t\t} );\n  *\n  *\t\tconfig.set( 'toolbar', {\n  *\t\t\tcolor: 'red',\n  *\t\t} );\n  *\n  *\t\tconfig.get( 'toolbar.collapsed' ); // true\n  *\t\tconfig.get( 'toolbar.color' ); // 'red'\n  *\n  * @param {String|Object} name The configuration name or an object from which take properties as\n  * configuration entries. Configuration names are case-sensitive.\n  * @param {*} value The configuration value. Used if a name is passed.\n  */\n\n\n\t_createClass(Config, [{\n\t\tkey: 'set',\n\t\tvalue: function set(name, value) {\n\t\t\tthis._setToTarget(this._config, name, value);\n\t\t}\n\n\t\t/**\n   * Does exactly the same as {@link #set} with one exception – passed configuration extends\n   * existing one, but does not overwrite already defined values.\n   *\n   * This method is supposed to be called by plugin developers to setup plugin's configurations. It would be\n   * rarely used for other needs.\n   *\n   * @param {String|Object} name The configuration name or an object from which take properties as\n   * configuration entries. Configuration names are case-sensitive.\n   * @param {*} value The configuration value. Used if a name is passed.\n   */\n\n\t}, {\n\t\tkey: 'define',\n\t\tvalue: function define(name, value) {\n\t\t\tvar isDefine = true;\n\n\t\t\tthis._setToTarget(this._config, name, value, isDefine);\n\t\t}\n\n\t\t/**\n   * Gets the value for a configuration entry.\n   *\n   *\t\tconfig.get( 'name' );\n   *\n   * Deep configurations can be retrieved by separating each part with a dot.\n   *\n   *\t\tconfig.get( 'toolbar.collapsed' );\n   *\n   * @param {String} name The configuration name. Configuration names are case-sensitive.\n   * @returns {*} The configuration value or `undefined` if the configuration entry was not found.\n   */\n\n\t}, {\n\t\tkey: 'get',\n\t\tvalue: function get(name) {\n\t\t\treturn this._getFromSource(this._config, name);\n\t\t}\n\n\t\t/**\n   * Saves passed configuration to the specified target (nested object).\n   *\n   * @private\n   * @param {Object} target Nested config object.\n   * @param {String|Object} name The configuration name or an object from which take properties as\n   * configuration entries. Configuration names are case-sensitive.\n   * @param {*} value The configuration value. Used if a name is passed.\n   * @param {Boolean} [isDefine=false] Define if passed configuration should overwrite existing one.\n   */\n\n\t}, {\n\t\tkey: '_setToTarget',\n\t\tvalue: function _setToTarget(target, name, value) {\n\t\t\tvar isDefine = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : false;\n\n\t\t\t// In case of an object, iterate through it and call `_setToTarget` again for each property.\n\t\t\tif ((0, _isPlainObject2.default)(name)) {\n\t\t\t\tthis._setObjectToTarget(target, name, isDefine);\n\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// The configuration name should be split into parts if it has dots. E.g. `resize.width` -> [`resize`, `width`].\n\t\t\tvar parts = name.split('.');\n\n\t\t\t// Take the name of the configuration out of the parts. E.g. `resize.width` -> `width`.\n\t\t\tname = parts.pop();\n\n\t\t\t// Iterate over parts to check if currently stored configuration has proper structure.\n\t\t\tvar _iteratorNormalCompletion = true;\n\t\t\tvar _didIteratorError = false;\n\t\t\tvar _iteratorError = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator = parts[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\t\t\tvar part = _step.value;\n\n\t\t\t\t\t// If there is no object for specified part then create one.\n\t\t\t\t\tif (!(0, _isPlainObject2.default)(target[part])) {\n\t\t\t\t\t\ttarget[part] = {};\n\t\t\t\t\t}\n\n\t\t\t\t\t// Nested object becomes a target.\n\t\t\t\t\ttarget = target[part];\n\t\t\t\t}\n\n\t\t\t\t// In case of value is an object.\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError = true;\n\t\t\t\t_iteratorError = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t\t\t_iterator.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError) {\n\t\t\t\t\t\tthrow _iteratorError;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tif ((0, _isPlainObject2.default)(value)) {\n\t\t\t\t// We take care of proper config structure.\n\t\t\t\tif (!(0, _isPlainObject2.default)(target[name])) {\n\t\t\t\t\ttarget[name] = {};\n\t\t\t\t}\n\n\t\t\t\ttarget = target[name];\n\n\t\t\t\t// And iterate through this object calling `_setToTarget` again for each property.\n\t\t\t\tthis._setObjectToTarget(target, value, isDefine);\n\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// Do nothing if we are defining configuration for non empty name.\n\t\t\tif (isDefine && typeof target[name] != 'undefined') {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\ttarget[name] = value;\n\t\t}\n\n\t\t/**\n   * Get specified configuration from specified source (nested object).\n   *\n   * @private\n   * @param {Object} source level of nested object.\n   * @param {String} name The configuration name. Configuration names are case-sensitive.\n   * @returns {*} The configuration value or `undefined` if the configuration entry was not found.\n   */\n\n\t}, {\n\t\tkey: '_getFromSource',\n\t\tvalue: function _getFromSource(source, name) {\n\t\t\t// The configuration name should be split into parts if it has dots. E.g. `resize.width` -> [`resize`, `width`].\n\t\t\tvar parts = name.split('.');\n\n\t\t\t// Take the name of the configuration out of the parts. E.g. `resize.width` -> `width`.\n\t\t\tname = parts.pop();\n\n\t\t\t// Iterate over parts to check if currently stored configuration has proper structure.\n\t\t\tvar _iteratorNormalCompletion2 = true;\n\t\t\tvar _didIteratorError2 = false;\n\t\t\tvar _iteratorError2 = undefined;\n\n\t\t\ttry {\n\t\t\t\tfor (var _iterator2 = parts[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {\n\t\t\t\t\tvar part = _step2.value;\n\n\t\t\t\t\tif (!(0, _isPlainObject2.default)(source[part])) {\n\t\t\t\t\t\tsource = null;\n\t\t\t\t\t\tbreak;\n\t\t\t\t\t}\n\n\t\t\t\t\t// Nested object becomes a source.\n\t\t\t\t\tsource = source[part];\n\t\t\t\t}\n\n\t\t\t\t// Always returns undefined for non existing configuration\n\t\t\t} catch (err) {\n\t\t\t\t_didIteratorError2 = true;\n\t\t\t\t_iteratorError2 = err;\n\t\t\t} finally {\n\t\t\t\ttry {\n\t\t\t\t\tif (!_iteratorNormalCompletion2 && _iterator2.return) {\n\t\t\t\t\t\t_iterator2.return();\n\t\t\t\t\t}\n\t\t\t\t} finally {\n\t\t\t\t\tif (_didIteratorError2) {\n\t\t\t\t\t\tthrow _iteratorError2;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn source ? source[name] : undefined;\n\t\t}\n\n\t\t/**\n   * Iterates through passed object and calls {@link #_setToTarget} method with object key and value for each property.\n   *\n   * @private\n   * @param {Object} target Nested config object.\n   * @param {Object} configuration Configuration data set\n   * @param {Boolean} [isDefine] Defines if passed configuration is default configuration or not.\n   */\n\n\t}, {\n\t\tkey: '_setObjectToTarget',\n\t\tvalue: function _setObjectToTarget(target, configuration, isDefine) {\n\t\t\tvar _this = this;\n\n\t\t\tObject.keys(configuration).forEach(function (key) {\n\t\t\t\t_this._setToTarget(target, key, configuration[key], isDefine);\n\t\t\t});\n\t\t}\n\t}]);\n\n\treturn Config;\n}();\n\nexports.default = Config;\n\n/***/ }),\n/* 388 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\nexports.default = diffToChanges;\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/difftochanges\n */\n\n/**\n * Creates a set of changes which need to be applied to the input in order to transform\n * it into the output. This function can be used with strings or arrays.\n *\n *\t\tconst input = Array.from( 'abc' );\n *\t\tconst output = Array.from( 'xaby' );\n *\t\tconst changes = diffToChanges( diff( input, output ), output );\n *\n *\t\tchanges.forEach( change => {\n *\t\t\tif ( change.type == 'insert' ) {\n *\t\t\t\tinput.splice( change.index, 0, ...change.values );\n *\t\t\t} else if ( change.type == 'delete' ) {\n *\t\t\t\tinput.splice( change.index, change.howMany );\n *\t\t\t}\n *\t\t} );\n *\n *\t\tinput.join( '' ) == output.join( '' ); // -> true\n *\n * @param {Array.<'equal'|'insert'|'delete'>} diff Result of {@link module:utils/diff~diff}.\n * @param {String|Array} output The string or array which was passed as diff's output.\n * @returns {Array.<Object>} Set of changes (insert or delete) which need to be applied to the input\n * in order to transform it into the output.\n */\nfunction diffToChanges(diff, output) {\n\tvar changes = [];\n\tvar index = 0;\n\tvar lastOperation = void 0;\n\n\tdiff.forEach(function (change) {\n\t\tif (change == 'equal') {\n\t\t\tpushLast();\n\n\t\t\tindex++;\n\t\t} else if (change == 'insert') {\n\t\t\tif (isContinuationOf('insert')) {\n\t\t\t\tlastOperation.values.push(output[index]);\n\t\t\t} else {\n\t\t\t\tpushLast();\n\n\t\t\t\tlastOperation = {\n\t\t\t\t\ttype: 'insert',\n\t\t\t\t\tindex: index,\n\t\t\t\t\tvalues: [output[index]]\n\t\t\t\t};\n\t\t\t}\n\n\t\t\tindex++;\n\t\t} else /* if ( change == 'delete' ) */{\n\t\t\t\tif (isContinuationOf('delete')) {\n\t\t\t\t\tlastOperation.howMany++;\n\t\t\t\t} else {\n\t\t\t\t\tpushLast();\n\n\t\t\t\t\tlastOperation = {\n\t\t\t\t\t\ttype: 'delete',\n\t\t\t\t\t\tindex: index,\n\t\t\t\t\t\thowMany: 1\n\t\t\t\t\t};\n\t\t\t\t}\n\t\t\t}\n\t});\n\n\tpushLast();\n\n\treturn changes;\n\n\tfunction pushLast() {\n\t\tif (lastOperation) {\n\t\t\tchanges.push(lastOperation);\n\t\t\tlastOperation = null;\n\t\t}\n\t}\n\n\tfunction isContinuationOf(expected) {\n\t\treturn lastOperation && lastOperation.type == expected;\n\t}\n}\n\n/***/ }),\n/* 389 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = getCommonAncestor;\n\nvar _getancestors = __webpack_require__(192);\n\nvar _getancestors2 = _interopRequireDefault(_getancestors);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Searches and returns the lowest common ancestor of two given nodes.\n *\n * @param {Node} nodeA First node.\n * @param {Node} nodeB Second node.\n * @returns {Node|DocumentFragment|Document|null} Lowest common ancestor of both nodes or `null` if nodes do not have a common ancestor.\n */\nfunction getCommonAncestor(nodeA, nodeB) {\n  var ancestorsA = (0, _getancestors2.default)(nodeA);\n  var ancestorsB = (0, _getancestors2.default)(nodeB);\n\n  var i = 0;\n\n  // It does not matter which array is shorter.\n  while (ancestorsA[i] == ancestorsB[i] && ancestorsA[i]) {\n    i++;\n  }\n\n  return i === 0 ? null : ancestorsA[i - 1];\n} /**\n   * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n   * For licensing, see LICENSE.md.\n   */\n\n/**\n * @module utils/dom/getcommonancestor\n */\n\n/***/ }),\n/* 390 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = getDataFromElement;\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/* globals HTMLTextAreaElement */\n\n/**\n * @module utils/dom/getdatafromelement\n */\n\n/**\n * Gets data from a given source element.\n *\n * @param {HTMLElement} el The element from which the data will be retrieved.\n * @returns {String} The data string.\n */\nfunction getDataFromElement(el) {\n  if (el instanceof HTMLTextAreaElement) {\n    return el.value;\n  }\n\n  return el.innerHTML;\n}\n\n/***/ }),\n/* 391 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = getPositionedAncestor;\n\nvar _global = __webpack_require__(59);\n\nvar _global2 = _interopRequireDefault(_global);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * For a given element, returns the nearest ancestor element which CSS position is not \"static\".\n *\n * @param {HTMLElement} element Native DOM element to be checked.\n * @returns {HTMLElement|null}\n */\nfunction getPositionedAncestor(element) {\n  while (element && element.tagName.toLowerCase() != 'html') {\n    if (_global2.default.window.getComputedStyle(element).position != 'static') {\n      return element;\n    }\n\n    element = element.parentElement;\n  }\n\n  return null;\n} /**\n   * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n   * For licensing, see LICENSE.md.\n   */\n\n/**\n * @module utils/dom/getpositionedancestor\n */\n\n/***/ }),\n/* 392 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = indexOf;\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/dom/indexof\n */\n\n/**\n * Returns index of the node in the parent element.\n *\n * @param {Node} node Node which index is tested.\n * @returns {Number} Index of the node in the parent element. Returns 0 if node has no parent.\n */\nfunction indexOf(node) {\n  var index = 0;\n\n  while (node.previousSibling) {\n    node = node.previousSibling;\n    index++;\n  }\n\n  return index;\n}\n\n/***/ }),\n/* 393 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = insertAt;\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/dom/insertat\n */\n\n/**\n * Inserts node to the parent at given index.\n *\n * @param {Element} parentElement Parent element.\n * @param {Number} index Insertions index.\n * @param {Node} nodeToInsert Node to insert.\n */\nfunction insertAt(parentElement, index, nodeToInsert) {\n  parentElement.insertBefore(nodeToInsert, parentElement.childNodes[index] || null);\n}\n\n/***/ }),\n/* 394 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = isRange;\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/dom/isrange\n */\n\n/**\n * Checks if the object is a native DOM Range.\n *\n * @param {*} obj\n * @returns {Boolean}\n */\nfunction isRange(obj) {\n  return Object.prototype.toString.apply(obj) == '[object Range]';\n}\n\n/***/ }),\n/* 395 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _slicedToArray = function () { function sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i[\"return\"]) _i[\"return\"](); } finally { if (_d) throw _e; } } return _arr; } return function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return sliceIterator(arr, i); } else { throw new TypeError(\"Invalid attempt to destructure non-iterable instance\"); } }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          */\n\n/**\n * @module utils/dom/position\n */\n\nexports.getOptimalPosition = getOptimalPosition;\n\nvar _global = __webpack_require__(59);\n\nvar _global2 = _interopRequireDefault(_global);\n\nvar _rect = __webpack_require__(396);\n\nvar _rect2 = _interopRequireDefault(_rect);\n\nvar _getpositionedancestor = __webpack_require__(391);\n\nvar _getpositionedancestor2 = _interopRequireDefault(_getpositionedancestor);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Calculates the `position: absolute` coordinates of a given element so it can be positioned with respect to the\n * target in the visually most efficient way, taking various restrictions like viewport or limiter geometry\n * into consideration.\n *\n *\t\t// The element which is to be positioned.\n *\t\tconst element = document.body.querySelector( '#toolbar' );\n *\n *\t\t// A target to which the element is positioned relatively.\n *\t\tconst target = document.body.querySelector( '#container' );\n *\n *\t\t// Finding the optimal coordinates for the positioning.\n *\t\tconst { left, top, name } = getOptimalPosition( {\n *\t\t\telement: element,\n *\t\t\ttarget: target,\n *\n * \t\t\t// The algorithm will chose among these positions to meet the requirements such\n * \t\t\t// as \"limiter\" element or \"fitInViewport\", set below. The positions are considered\n * \t\t\t// in the order of the array.\n *\t\t\tpositions: [\n *\t\t\t\t//\n *\t\t\t \t//\t[ Target ]\n *\t\t\t\t//\t+-----------------+\n *\t\t\t\t//\t|     Element     |\n *\t\t\t\t//\t+-----------------+\n *\t\t\t\t//\n *\t\t\t\ttargetRect => ( {\n *\t\t\t\t\ttop: targetRect.bottom,\n *\t\t\t\t\tleft: targetRect.left,\n *\t\t\t\t\tname: 'mySouthEastPosition'\n *\t\t\t\t} ),\n *\n *\t\t\t\t//\n *\t\t\t\t//\t+-----------------+\n *\t\t\t\t//\t|     Element     |\n *\t\t\t\t//\t+-----------------+\n *\t\t\t\t//\t[ Target ]\n *\t\t\t\t//\n *\t\t\t\t( targetRect, elementRect ) => ( {\n *\t\t\t\t\ttop: targetRect.top - elementRect.height,\n *\t\t\t\t\tleft: targetRect.left,\n *\t\t\t\t\tname: 'myNorthEastPosition'\n *\t\t\t\t} )\n *\t\t\t],\n *\n *\t\t\t// Find a position such guarantees the element remains within visible boundaries of <body>.\n *\t\t\tlimiter: document.body,\n *\n *\t\t\t// Find a position such guarantees the element remains within visible boundaries of the browser viewport.\n *\t\t\tfitInViewport: true\n *\t\t} );\n *\n *\t\t// The best position which fits into document.body and the viewport. May be useful\n *\t\t// to set proper class on the `element`.\n *\t\tconsole.log( name ); -> \"myNorthEastPosition\"\n *\n *\t\t// Using the absolute coordinates which has been found to position the element\n *\t\t// as in the diagram depicting the \"myNorthEastPosition\" position.\n *\t\telement.style.top = top;\n *\t\telement.style.left = left;\n *\n * @param {module:utils/dom/position~Options} options Positioning options object.\n * @returns {module:utils/dom/position~Position}\n */\nfunction getOptimalPosition(_ref) {\n  var element = _ref.element,\n      target = _ref.target,\n      positions = _ref.positions,\n      limiter = _ref.limiter,\n      fitInViewport = _ref.fitInViewport;\n\n  var positionedElementAncestor = (0, _getpositionedancestor2.default)(element.parentElement);\n  var elementRect = new _rect2.default(element);\n  var targetRect = new _rect2.default(target);\n\n  var bestPosition = void 0;\n  var name = void 0;\n\n  // If there are no limits, just grab the very first position and be done with that drama.\n  if (!limiter && !fitInViewport) {\n    var _getPosition = getPosition(positions[0], targetRect, elementRect);\n\n    var _getPosition2 = _slicedToArray(_getPosition, 2);\n\n    name = _getPosition2[0];\n    bestPosition = _getPosition2[1];\n  } else {\n    var limiterRect = limiter && new _rect2.default(limiter);\n    var viewportRect = fitInViewport && _rect2.default.getViewportRect();\n\n    var _ref2 = getBestPosition(positions, targetRect, elementRect, limiterRect, viewportRect) ||\n    // If there's no best position found, i.e. when all intersections have no area because\n    // rects have no width or height, then just use the first available position.\n    getPosition(positions[0], targetRect, elementRect);\n\n    var _ref3 = _slicedToArray(_ref2, 2);\n\n    name = _ref3[0];\n    bestPosition = _ref3[1];\n  }\n\n  var _getAbsoluteRectCoord = getAbsoluteRectCoordinates(bestPosition),\n      left = _getAbsoluteRectCoord.left,\n      top = _getAbsoluteRectCoord.top;\n\n  // (#126) If there's some positioned ancestor of the panel, then its rect must be taken into\n  // consideration. `Rect` is always relative to the viewport while `position: absolute` works\n  // with respect to that positioned ancestor.\n\n\n  if (positionedElementAncestor) {\n    var ancestorPosition = getAbsoluteRectCoordinates(new _rect2.default(positionedElementAncestor));\n\n    left -= ancestorPosition.left;\n    top -= ancestorPosition.top;\n  }\n\n  return { left: left, top: top, name: name };\n}\n\n// For given position function, returns a corresponding `Rect` instance.\n//\n// @private\n// @param {Function} position A function returning {@link module:utils/dom/position~Position}.\n// @param {utils/dom/rect~Rect} targetRect A rect of the target.\n// @param {utils/dom/rect~Rect} elementRect A rect of positioned element.\n// @returns {Array} An array containing position name and its Rect.\nfunction getPosition(position, targetRect, elementRect) {\n  var _position = position(targetRect, elementRect),\n      left = _position.left,\n      top = _position.top,\n      name = _position.name;\n\n  return [name, elementRect.clone().moveTo(left, top)];\n}\n\n// For a given array of positioning functions, returns such that provides the best\n// fit of the `elementRect` into the `limiterRect` and `viewportRect`.\n//\n// @private\n// @param {module:utils/dom/position~Options#positions} positions Functions returning\n// {@link module:utils/dom/position~Position} to be checked, in the order of preference.\n// @param {utils/dom/rect~Rect} targetRect A rect of the {@link module:utils/dom/position~Options#target}.\n// @param {utils/dom/rect~Rect} elementRect A rect of positioned {@link module:utils/dom/position~Options#element}.\n// @param {utils/dom/rect~Rect} limiterRect A rect of the {@link module:utils/dom/position~Options#limiter}.\n// @param {utils/dom/rect~Rect} viewportRect A rect of the viewport.\n// @returns {Array} An array containing the name of the position and it's rect.\nfunction getBestPosition(positions, targetRect, elementRect, limiterRect, viewportRect) {\n  var maxLimiterIntersectArea = 0;\n  var maxViewportIntersectArea = 0;\n  var bestPositionRect = void 0;\n  var bestPositionName = void 0;\n\n  // This is when element is fully visible.\n  var elementRectArea = elementRect.getArea();\n\n  positions.some(function (position) {\n    var _getPosition3 = getPosition(position, targetRect, elementRect),\n        _getPosition4 = _slicedToArray(_getPosition3, 2),\n        positionName = _getPosition4[0],\n        positionRect = _getPosition4[1];\n\n    var limiterIntersectArea = void 0;\n    var viewportIntersectArea = void 0;\n\n    if (limiterRect) {\n      if (viewportRect) {\n        // Consider only the part of the limiter which is visible in the viewport. So the limiter is getting limited.\n        var limiterViewportIntersectRect = limiterRect.getIntersection(viewportRect);\n\n        if (limiterViewportIntersectRect) {\n          // If the limiter is within the viewport, then check the intersection between that part of the\n          // limiter and actual position.\n          limiterIntersectArea = limiterViewportIntersectRect.getIntersectionArea(positionRect);\n        } else {\n          limiterIntersectArea = 0;\n        }\n      } else {\n        limiterIntersectArea = limiterRect.getIntersectionArea(positionRect);\n      }\n    }\n\n    if (viewportRect) {\n      viewportIntersectArea = viewportRect.getIntersectionArea(positionRect);\n    }\n\n    // The only criterion: intersection with the viewport.\n    if (viewportRect && !limiterRect) {\n      if (viewportIntersectArea > maxViewportIntersectArea) {\n        setBestPosition();\n      }\n    }\n    // The only criterion: intersection with the limiter.\n    else if (!viewportRect && limiterRect) {\n        if (limiterIntersectArea > maxLimiterIntersectArea) {\n          setBestPosition();\n        }\n      }\n      // Two criteria: intersection with the viewport and the limiter visible in the viewport.\n      else {\n          if (viewportIntersectArea > maxViewportIntersectArea && limiterIntersectArea >= maxLimiterIntersectArea) {\n            setBestPosition();\n          } else if (viewportIntersectArea >= maxViewportIntersectArea && limiterIntersectArea > maxLimiterIntersectArea) {\n            setBestPosition();\n          }\n        }\n\n    function setBestPosition() {\n      maxViewportIntersectArea = viewportIntersectArea;\n      maxLimiterIntersectArea = limiterIntersectArea;\n      bestPositionRect = positionRect;\n      bestPositionName = positionName;\n    }\n\n    // If a such position is found that element is fully container by the limiter then, obviously,\n    // there will be no better one, so finishing.\n    return limiterIntersectArea === elementRectArea;\n  });\n\n  return bestPositionRect ? [bestPositionName, bestPositionRect] : null;\n}\n\n// DOMRect (also Rect) works in a scroll–independent geometry but `position: absolute` doesn't.\n// This function converts Rect to `position: absolute` coordinates.\n//\n// @private\n// @param {utils/dom/rect~Rect} rect A rect to be converted.\n// @returns {Object} Object containing `left` and `top` properties, in absolute coordinates.\nfunction getAbsoluteRectCoordinates(_ref4) {\n  var left = _ref4.left,\n      top = _ref4.top;\n  var _global$window = _global2.default.window,\n      scrollX = _global$window.scrollX,\n      scrollY = _global$window.scrollY;\n\n\n  return {\n    left: left + scrollX,\n    top: top + scrollY\n  };\n}\n\n/**\n * The `getOptimalPosition` helper options.\n *\n * @interface module:utils/dom/position~Options\n */\n\n/**\n * Element that is to be positioned.\n *\n * @member {HTMLElement} #element\n */\n\n/**\n * Target with respect to which the `element` is to be positioned.\n *\n * @member {HTMLElement|Range|ClientRect} #target\n */\n\n/**\n * An array of functions which return {@link module:utils/dom/position~Position} relative\n * to the `target`, in the order of preference.\n *\n * @member {Array.<Function>} #positions\n */\n\n/**\n * When set, the algorithm will chose position which fits the most in the\n * limiter's bounding rect.\n *\n * @member {HTMLElement|Range|ClientRect} #limiter\n */\n\n/**\n * When set, the algorithm will chose such a position which fits `element`\n * the most inside visible viewport.\n *\n * @member {Boolean} #fitInViewport\n */\n\n/**\n * An object describing a position in `position: absolute` coordinate\n * system, along with position name.\n *\n * @typedef {Object} module:utils/dom/position~Position\n *\n * @property {Number} top Top position offset.\n * @property {Number} left Left position offset.\n * @property {String} name Name of the position.\n */\n\n/***/ }),\n/* 396 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module utils/dom/rect\n */\n\nvar _global = __webpack_require__(59);\n\nvar _global2 = _interopRequireDefault(_global);\n\nvar _isrange = __webpack_require__(394);\n\nvar _isrange2 = _interopRequireDefault(_isrange);\n\nvar _isElement = __webpack_require__(487);\n\nvar _isElement2 = _interopRequireDefault(_isElement);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nvar rectProperties = ['top', 'right', 'bottom', 'left', 'width', 'height'];\n\n/**\n * A helper class representing a `ClientRect` object, e.g. value returned by\n * the native `object.getBoundingClientRect()` method. Provides a set of methods\n * to manipulate the rect and compare it against other `Rect` instances.\n */\n\nvar Rect = function () {\n\t/**\n  * Creates an instance of rect.\n  *\n  *\t\t// Rect of an HTMLElement.\n  *\t\tconst rectA = new Rect( document.body );\n  *\n  *\t\t// Rect of a DOM Range.\n  *\t\tconst rectB = new Rect( document.getSelection().getRangeAt( 0 ) );\n  *\n  *\t\t// Rect out of an object.\n  *\t\tconst rectC = new Rect( { top: 0, right: 10, bottom: 10, left: 0, width: 10, height: 10 } );\n  *\n  *\t\t// Rect out of another Rect instance.\n  *\t\tconst rectD = new Rect( rectC );\n  *\n  *\t\t// Rect out of a ClientRect.\n  *\t\tconst rectE = new Rect( document.body.getClientRects().item( 0 ) );\n  *\n  * @param {HTMLElement|Range|ClientRect|module:utils/dom/rect~Rect|Object} obj A source object to create the rect.\n  */\n\tfunction Rect(obj) {\n\t\tvar _this = this;\n\n\t\t_classCallCheck(this, Rect);\n\n\t\tif ((0, _isElement2.default)(obj) || (0, _isrange2.default)(obj)) {\n\t\t\tobj = obj.getBoundingClientRect();\n\t\t}\n\n\t\trectProperties.forEach(function (p) {\n\t\t\treturn _this[p] = obj[p];\n\t\t});\n\n\t\t/**\n   * The \"top\" value of the rect.\n   *\n   * @readonly\n   * @member {Number} #top\n   */\n\n\t\t/**\n   * The \"right\" value of the rect.\n   *\n   * @readonly\n   * @member {Number} #right\n   */\n\n\t\t/**\n   * The \"bottom\" value of the rect.\n   *\n   * @readonly\n   * @member {Number} #bottom\n   */\n\n\t\t/**\n   * The \"left\" value of the rect.\n   *\n   * @readonly\n   * @member {Number} #left\n   */\n\n\t\t/**\n   * The \"width\" value of the rect.\n   *\n   * @readonly\n   * @member {Number} #width\n   */\n\n\t\t/**\n   * The \"height\" value of the rect.\n   *\n   * @readonly\n   * @member {Number} #height\n   */\n\t}\n\n\t/**\n  * Returns a clone of the rect.\n  *\n  * @returns {module:utils/dom/rect~Rect} A cloned rect.\n  */\n\n\n\t_createClass(Rect, [{\n\t\tkey: 'clone',\n\t\tvalue: function clone() {\n\t\t\treturn new Rect(this);\n\t\t}\n\n\t\t/**\n   * Moves the rect so that its upper–left corner lands in desired `[ x, y ]` location.\n   *\n   * @param {Number} x Desired horizontal location.\n   * @param {Number} y Desired vertical location.\n   * @returns {module:utils/dom/rect~Rect} A rect which has been moved.\n   */\n\n\t}, {\n\t\tkey: 'moveTo',\n\t\tvalue: function moveTo(x, y) {\n\t\t\tthis.top = y;\n\t\t\tthis.right = x + this.width;\n\t\t\tthis.bottom = y + this.height;\n\t\t\tthis.left = x;\n\n\t\t\treturn this;\n\t\t}\n\n\t\t/**\n   * Moves the rect in–place by a dedicated offset.\n   *\n   * @param {Number} x A horizontal offset.\n   * @param {Number} y A vertical offset\n   * @returns {module:utils/dom/rect~Rect} A rect which has been moved.\n   */\n\n\t}, {\n\t\tkey: 'moveBy',\n\t\tvalue: function moveBy(x, y) {\n\t\t\tthis.top += y;\n\t\t\tthis.right += x;\n\t\t\tthis.left += x;\n\t\t\tthis.bottom += y;\n\n\t\t\treturn this;\n\t\t}\n\n\t\t/**\n   * Returns a new rect a a result of intersection with another rect.\n   *\n   * @param {module:utils/dom/rect~Rect} anotherRect\n   * @returns {module:utils/dom/rect~Rect}\n   */\n\n\t}, {\n\t\tkey: 'getIntersection',\n\t\tvalue: function getIntersection(anotherRect) {\n\t\t\tvar rect = {\n\t\t\t\ttop: Math.max(this.top, anotherRect.top),\n\t\t\t\tright: Math.min(this.right, anotherRect.right),\n\t\t\t\tbottom: Math.min(this.bottom, anotherRect.bottom),\n\t\t\t\tleft: Math.max(this.left, anotherRect.left)\n\t\t\t};\n\n\t\t\trect.width = rect.right - rect.left;\n\t\t\trect.height = rect.bottom - rect.top;\n\n\t\t\tif (rect.width < 0 || rect.height < 0) {\n\t\t\t\treturn null;\n\t\t\t} else {\n\t\t\t\treturn new Rect(rect);\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Returns the area of intersection with another rect.\n   *\n   * @param {module:utils/dom/rect~Rect} anotherRect [description]\n   * @returns {Number} Area of intersection.\n   */\n\n\t}, {\n\t\tkey: 'getIntersectionArea',\n\t\tvalue: function getIntersectionArea(anotherRect) {\n\t\t\tvar rect = this.getIntersection(anotherRect);\n\n\t\t\tif (rect) {\n\t\t\t\treturn rect.getArea();\n\t\t\t} else {\n\t\t\t\treturn 0;\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Returns the area of the rect.\n   *\n   * @returns {Number}\n   */\n\n\t}, {\n\t\tkey: 'getArea',\n\t\tvalue: function getArea() {\n\t\t\treturn this.width * this.height;\n\t\t}\n\n\t\t/**\n   * Returns a rect of the web browser viewport.\n   *\n   * @returns {module:utils/dom/rect~Rect} A viewport rect.\n   */\n\n\t}], [{\n\t\tkey: 'getViewportRect',\n\t\tvalue: function getViewportRect() {\n\t\t\tvar _global$window = _global2.default.window,\n\t\t\t    innerWidth = _global$window.innerWidth,\n\t\t\t    innerHeight = _global$window.innerHeight;\n\n\n\t\t\treturn new Rect({\n\t\t\t\ttop: 0,\n\t\t\t\tright: innerWidth,\n\t\t\t\tbottom: innerHeight,\n\t\t\t\tleft: 0,\n\t\t\t\twidth: innerWidth,\n\t\t\t\theight: innerHeight\n\t\t\t});\n\t\t}\n\t}]);\n\n\treturn Rect;\n}();\n\nexports.default = Rect;\n\n/***/ }),\n/* 397 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = remove;\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/dom/remove\n */\n\n/**\n * Removes given node from parent.\n *\n * @param {Node} node Node to remove.\n */\nfunction remove(node) {\n  var parent = node.parentNode;\n\n  if (parent) {\n    parent.removeChild(node);\n  }\n}\n\n/***/ }),\n/* 398 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = setDataInElement;\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/dom/setdatainelement\n */\n\n/* globals HTMLTextAreaElement */\n\n/**\n * Sets data in a given element.\n *\n * @param {HTMLElement} el The element in which the data will be set.\n * @param {String} data The data string.\n */\nfunction setDataInElement(el, data) {\n  if (el instanceof HTMLTextAreaElement) {\n    el.value = data;\n  }\n\n  el.innerHTML = data;\n}\n\n/***/ }),\n/* 399 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/elementreplacer\n */\n\n/**\n * Utility class allowing to hide existing HTML elements or replace them with given ones in a way that doesn't remove\n * the original elements from the DOM.\n */\nvar ElementReplacer = function () {\n\tfunction ElementReplacer() {\n\t\t_classCallCheck(this, ElementReplacer);\n\n\t\t/**\n   * The elements replaced by {@link #replace} and their replacements.\n   *\n   * @private\n   * @member {Array.<Object>}\n   */\n\t\tthis._replacedElements = [];\n\t}\n\n\t/**\n  * Hides the `element` and, if specified, inserts the the given element next to it.\n  *\n  * The effect of this method can be reverted by {@link #restore}.\n  *\n  * @param {HTMLElement} element The element to replace.\n  * @param {HTMLElement} [newElement] The replacement element. If not passed, then the `element` will just be hidden.\n  */\n\n\n\t_createClass(ElementReplacer, [{\n\t\tkey: 'replace',\n\t\tvalue: function replace(element, newElement) {\n\t\t\tthis._replacedElements.push({ element: element, newElement: newElement });\n\n\t\t\telement.style.display = 'none';\n\n\t\t\tif (newElement) {\n\t\t\t\telement.parentNode.insertBefore(newElement, element.nextSibling);\n\t\t\t}\n\t\t}\n\n\t\t/**\n   * Restores what {@link #replace} did.\n   */\n\n\t}, {\n\t\tkey: 'restore',\n\t\tvalue: function restore() {\n\t\t\tthis._replacedElements.forEach(function (_ref) {\n\t\t\t\tvar element = _ref.element,\n\t\t\t\t    newElement = _ref.newElement;\n\n\t\t\t\telement.style.display = '';\n\n\t\t\t\tif (newElement) {\n\t\t\t\t\tnewElement.remove();\n\t\t\t\t}\n\t\t\t});\n\n\t\t\tthis._replacedElements = [];\n\t\t}\n\t}]);\n\n\treturn ElementReplacer;\n}();\n\nexports.default = ElementReplacer;\n\n/***/ }),\n/* 400 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.isMac = isMac;\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/* globals navigator:false */\n\n/**\n * @module utils/env\n */\n\nvar userAgent = navigator.userAgent.toLowerCase();\n\n/**\n * A namespace containing environment and browser information.\n *\n * @namespace\n */\nvar env = {\n  /**\n   * Indicates that application is running on Macintosh.\n   *\n   * @static\n   * @member {Boolean} module:utils/env~env#mac\n   */\n  mac: isMac(userAgent)\n};\n\nexports.default = env;\n\n/**\n * Checks if User Agent represented by the string is running on Macintosh.\n *\n * @param {String} userAgent **Lowercase** `navigator.userAgent` string.\n * @returns {Boolean} Whether User Agent is running on Macintosh or not.\n */\n\nfunction isMac(userAgent) {\n  return userAgent.indexOf('macintosh') > -1;\n}\n\n/***/ }),\n/* 401 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _spy = __webpack_require__(503);\n\nvar _spy2 = _interopRequireDefault(_spy);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } } /**\n                                                                                                                                                           * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                           * For licensing, see LICENSE.md.\n                                                                                                                                                           */\n\n/**\n * @module utils/eventinfo\n */\n\n/**\n * The event object passed to event callbacks. It is used to provide information about the event as well as a tool to\n * manipulate it.\n */\nvar EventInfo =\n/**\n * @param {Object} source The emitter.\n * @param {String} name The event name.\n */\nfunction EventInfo(source, name) {\n\t_classCallCheck(this, EventInfo);\n\n\t/**\n  * The object that fired the event.\n  *\n  * @readonly\n  * @member {Object}\n  */\n\tthis.source = source;\n\n\t/**\n  * The event name.\n  *\n  * @readonly\n  * @member {String}\n  */\n\tthis.name = name;\n\n\t/**\n  * Path this event has followed. See {@link module:utils/emittermixin~EmitterMixin#delegate}.\n  *\n  * @readonly\n  * @member {Array.<Object>}\n  */\n\tthis.path = [];\n\n\t// The following methods are defined in the constructor because they must be re-created per instance.\n\n\t/**\n  * Stops the event emitter to call further callbacks for this event interaction.\n  *\n  * @method #stop\n  */\n\tthis.stop = (0, _spy2.default)();\n\n\t/**\n  * Removes the current callback from future interactions of this event.\n  *\n  * @method #off\n  */\n\tthis.off = (0, _spy2.default)();\n};\n\nexports.default = EventInfo;\n\n/***/ }),\n/* 402 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _getNative = __webpack_require__(49);\n\nvar _getNative2 = _interopRequireDefault(_getNative);\n\nvar _root = __webpack_require__(30);\n\nvar _root2 = _interopRequireDefault(_root);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/* Built-in method references that are verified to be native. */\nvar DataView = (0, _getNative2.default)(_root2.default, 'DataView');\n\nexports.default = DataView;\n\n/***/ }),\n/* 403 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _hashClear = __webpack_require__(449);\n\nvar _hashClear2 = _interopRequireDefault(_hashClear);\n\nvar _hashDelete = __webpack_require__(450);\n\nvar _hashDelete2 = _interopRequireDefault(_hashDelete);\n\nvar _hashGet = __webpack_require__(451);\n\nvar _hashGet2 = _interopRequireDefault(_hashGet);\n\nvar _hashHas = __webpack_require__(452);\n\nvar _hashHas2 = _interopRequireDefault(_hashHas);\n\nvar _hashSet = __webpack_require__(453);\n\nvar _hashSet2 = _interopRequireDefault(_hashSet);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Creates a hash object.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\nfunction Hash(entries) {\n  var index = -1,\n      length = entries ? entries.length : 0;\n\n  this.clear();\n  while (++index < length) {\n    var entry = entries[index];\n    this.set(entry[0], entry[1]);\n  }\n}\n\n// Add methods to `Hash`.\nHash.prototype.clear = _hashClear2.default;\nHash.prototype['delete'] = _hashDelete2.default;\nHash.prototype.get = _hashGet2.default;\nHash.prototype.has = _hashHas2.default;\nHash.prototype.set = _hashSet2.default;\n\nexports.default = Hash;\n\n/***/ }),\n/* 404 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _getNative = __webpack_require__(49);\n\nvar _getNative2 = _interopRequireDefault(_getNative);\n\nvar _root = __webpack_require__(30);\n\nvar _root2 = _interopRequireDefault(_root);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/* Built-in method references that are verified to be native. */\nvar Promise = (0, _getNative2.default)(_root2.default, 'Promise');\n\nexports.default = Promise;\n\n/***/ }),\n/* 405 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _root = __webpack_require__(30);\n\nvar _root2 = _interopRequireDefault(_root);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** Built-in value references. */\nvar Reflect = _root2.default.Reflect;\n\nexports.default = Reflect;\n\n/***/ }),\n/* 406 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _getNative = __webpack_require__(49);\n\nvar _getNative2 = _interopRequireDefault(_getNative);\n\nvar _root = __webpack_require__(30);\n\nvar _root2 = _interopRequireDefault(_root);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/* Built-in method references that are verified to be native. */\nvar WeakMap = (0, _getNative2.default)(_root2.default, 'WeakMap');\n\nexports.default = WeakMap;\n\n/***/ }),\n/* 407 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * Adds the key-value `pair` to `map`.\n *\n * @private\n * @param {Object} map The map to modify.\n * @param {Array} pair The key-value pair to add.\n * @returns {Object} Returns `map`.\n */\nfunction addMapEntry(map, pair) {\n  // Don't return `Map#set` because it doesn't return the map instance in IE 11.\n  map.set(pair[0], pair[1]);\n  return map;\n}\n\nexports.default = addMapEntry;\n\n/***/ }),\n/* 408 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * Adds `value` to `set`.\n *\n * @private\n * @param {Object} set The set to modify.\n * @param {*} value The value to add.\n * @returns {Object} Returns `set`.\n */\nfunction addSetEntry(set, value) {\n  set.add(value);\n  return set;\n}\n\nexports.default = addSetEntry;\n\n/***/ }),\n/* 409 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * A specialized version of `_.forEach` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array} Returns `array`.\n */\nfunction arrayEach(array, iteratee) {\n  var index = -1,\n      length = array.length;\n\n  while (++index < length) {\n    if (iteratee(array[index], index, array) === false) {\n      break;\n    }\n  }\n  return array;\n}\n\nexports.default = arrayEach;\n\n/***/ }),\n/* 410 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * A specialized version of `_.some` for arrays without support for iteratee\n * shorthands.\n *\n * @private\n * @param {Array} array The array to iterate over.\n * @param {Function} predicate The function invoked per iteration.\n * @returns {boolean} Returns `true` if any element passes the predicate check,\n *  else `false`.\n */\nfunction arraySome(array, predicate) {\n  var index = -1,\n      length = array.length;\n\n  while (++index < length) {\n    if (predicate(array[index], index, array)) {\n      return true;\n    }\n  }\n  return false;\n}\n\nexports.default = arraySome;\n\n/***/ }),\n/* 411 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _copyObject = __webpack_require__(139);\n\nvar _copyObject2 = _interopRequireDefault(_copyObject);\n\nvar _keys = __webpack_require__(64);\n\nvar _keys2 = _interopRequireDefault(_keys);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * The base implementation of `_.assign` without support for multiple sources\n * or `customizer` functions.\n *\n * @private\n * @param {Object} object The destination object.\n * @param {Object} source The source object.\n * @returns {Object} Returns `object`.\n */\nfunction baseAssign(object, source) {\n  return object && (0, _copyObject2.default)(source, (0, _keys2.default)(source), object);\n}\n\nexports.default = baseAssign;\n\n/***/ }),\n/* 412 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _get = __webpack_require__(230);\n\nvar _get2 = _interopRequireDefault(_get);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * The base implementation of `_.at` without support for individual paths.\n *\n * @private\n * @param {Object} object The object to iterate over.\n * @param {string[]} paths The property paths of elements to pick.\n * @returns {Array} Returns the picked elements.\n */\nfunction baseAt(object, paths) {\n  var index = -1,\n      isNil = object == null,\n      length = paths.length,\n      result = Array(length);\n\n  while (++index < length) {\n    result[index] = isNil ? undefined : (0, _get2.default)(object, paths[index]);\n  }\n  return result;\n}\n\nexports.default = baseAt;\n\n/***/ }),\n/* 413 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * The base implementation of `_.clamp` which doesn't coerce arguments to numbers.\n *\n * @private\n * @param {number} number The number to clamp.\n * @param {number} [lower] The lower bound.\n * @param {number} upper The upper bound.\n * @returns {number} Returns the clamped number.\n */\nfunction baseClamp(number, lower, upper) {\n  if (number === number) {\n    if (upper !== undefined) {\n      number = number <= upper ? number : upper;\n    }\n    if (lower !== undefined) {\n      number = number >= lower ? number : lower;\n    }\n  }\n  return number;\n}\n\nexports.default = baseClamp;\n\n/***/ }),\n/* 414 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _isObject = __webpack_require__(13);\n\nvar _isObject2 = _interopRequireDefault(_isObject);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** Built-in value references. */\nvar objectCreate = Object.create;\n\n/**\n * The base implementation of `_.create` without support for assigning\n * properties to the created object.\n *\n * @private\n * @param {Object} prototype The object to inherit from.\n * @returns {Object} Returns the new object.\n */\nfunction baseCreate(proto) {\n  return (0, _isObject2.default)(proto) ? objectCreate(proto) : {};\n}\n\nexports.default = baseCreate;\n\n/***/ }),\n/* 415 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _toInteger = __webpack_require__(14);\n\nvar _toInteger2 = _interopRequireDefault(_toInteger);\n\nvar _toLength = __webpack_require__(497);\n\nvar _toLength2 = _interopRequireDefault(_toLength);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * The base implementation of `_.fill` without an iteratee call guard.\n *\n * @private\n * @param {Array} array The array to fill.\n * @param {*} value The value to fill `array` with.\n * @param {number} [start=0] The start position.\n * @param {number} [end=array.length] The end position.\n * @returns {Array} Returns `array`.\n */\nfunction baseFill(array, value, start, end) {\n  var length = array.length;\n\n  start = (0, _toInteger2.default)(start);\n  if (start < 0) {\n    start = -start > length ? 0 : length + start;\n  }\n  end = end === undefined || end > length ? length : (0, _toInteger2.default)(end);\n  if (end < 0) {\n    end += length;\n  }\n  end = start > end ? 0 : (0, _toLength2.default)(end);\n  while (start < end) {\n    array[start++] = value;\n  }\n  return array;\n}\n\nexports.default = baseFill;\n\n/***/ }),\n/* 416 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _arrayPush = __webpack_require__(83);\n\nvar _arrayPush2 = _interopRequireDefault(_arrayPush);\n\nvar _isArray = __webpack_require__(11);\n\nvar _isArray2 = _interopRequireDefault(_isArray);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * The base implementation of `getAllKeys` and `getAllKeysIn` which uses\n * `keysFunc` and `symbolsFunc` to get the enumerable property names and\n * symbols of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Function} keysFunc The function to get the keys of `object`.\n * @param {Function} symbolsFunc The function to get the symbols of `object`.\n * @returns {Array} Returns the array of property names and symbols.\n */\nfunction baseGetAllKeys(object, keysFunc, symbolsFunc) {\n  var result = keysFunc(object);\n  return (0, _isArray2.default)(object) ? result : (0, _arrayPush2.default)(result, symbolsFunc(object));\n}\n\nexports.default = baseGetAllKeys;\n\n/***/ }),\n/* 417 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * The base implementation of `_.hasIn` without support for deep paths.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array|string} key The key to check.\n * @returns {boolean} Returns `true` if `key` exists, else `false`.\n */\nfunction baseHasIn(object, key) {\n  return key in Object(object);\n}\n\nexports.default = baseHasIn;\n\n/***/ }),\n/* 418 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * This function is like `baseIndexOf` except that it accepts a comparator.\n *\n * @private\n * @param {Array} array The array to search.\n * @param {*} value The value to search for.\n * @param {number} fromIndex The index to search from.\n * @param {Function} comparator The comparator invoked per element.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\nfunction baseIndexOfWith(array, value, fromIndex, comparator) {\n  var index = fromIndex - 1,\n      length = array.length;\n\n  while (++index < length) {\n    if (comparator(array[index], value)) {\n      return index;\n    }\n  }\n  return -1;\n}\n\nexports.default = baseIndexOfWith;\n\n/***/ }),\n/* 419 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _Stack = __webpack_require__(123);\n\nvar _Stack2 = _interopRequireDefault(_Stack);\n\nvar _equalArrays = __webpack_require__(207);\n\nvar _equalArrays2 = _interopRequireDefault(_equalArrays);\n\nvar _equalByTag = __webpack_require__(443);\n\nvar _equalByTag2 = _interopRequireDefault(_equalByTag);\n\nvar _equalObjects = __webpack_require__(444);\n\nvar _equalObjects2 = _interopRequireDefault(_equalObjects);\n\nvar _getTag = __webpack_require__(141);\n\nvar _getTag2 = _interopRequireDefault(_getTag);\n\nvar _isArray = __webpack_require__(11);\n\nvar _isArray2 = _interopRequireDefault(_isArray);\n\nvar _isHostObject = __webpack_require__(89);\n\nvar _isHostObject2 = _interopRequireDefault(_isHostObject);\n\nvar _isTypedArray = __webpack_require__(489);\n\nvar _isTypedArray2 = _interopRequireDefault(_isTypedArray);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** Used to compose bitmasks for comparison styles. */\nvar PARTIAL_COMPARE_FLAG = 2;\n\n/** `Object#toString` result references. */\nvar argsTag = '[object Arguments]',\n    arrayTag = '[object Array]',\n    objectTag = '[object Object]';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/**\n * A specialized version of `baseIsEqual` for arrays and objects which performs\n * deep comparisons and tracks traversed objects enabling objects with circular\n * references to be compared.\n *\n * @private\n * @param {Object} object The object to compare.\n * @param {Object} other The other object to compare.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Function} [customizer] The function to customize comparisons.\n * @param {number} [bitmask] The bitmask of comparison flags. See `baseIsEqual`\n *  for more details.\n * @param {Object} [stack] Tracks traversed `object` and `other` objects.\n * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n */\nfunction baseIsEqualDeep(object, other, equalFunc, customizer, bitmask, stack) {\n  var objIsArr = (0, _isArray2.default)(object),\n      othIsArr = (0, _isArray2.default)(other),\n      objTag = arrayTag,\n      othTag = arrayTag;\n\n  if (!objIsArr) {\n    objTag = (0, _getTag2.default)(object);\n    objTag = objTag == argsTag ? objectTag : objTag;\n  }\n  if (!othIsArr) {\n    othTag = (0, _getTag2.default)(other);\n    othTag = othTag == argsTag ? objectTag : othTag;\n  }\n  var objIsObj = objTag == objectTag && !(0, _isHostObject2.default)(object),\n      othIsObj = othTag == objectTag && !(0, _isHostObject2.default)(other),\n      isSameTag = objTag == othTag;\n\n  if (isSameTag && !objIsObj) {\n    stack || (stack = new _Stack2.default());\n    return objIsArr || (0, _isTypedArray2.default)(object) ? (0, _equalArrays2.default)(object, other, equalFunc, customizer, bitmask, stack) : (0, _equalByTag2.default)(object, other, objTag, equalFunc, customizer, bitmask, stack);\n  }\n  if (!(bitmask & PARTIAL_COMPARE_FLAG)) {\n    var objIsWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'),\n        othIsWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__');\n\n    if (objIsWrapped || othIsWrapped) {\n      var objUnwrapped = objIsWrapped ? object.value() : object,\n          othUnwrapped = othIsWrapped ? other.value() : other;\n\n      stack || (stack = new _Stack2.default());\n      return equalFunc(objUnwrapped, othUnwrapped, customizer, bitmask, stack);\n    }\n  }\n  if (!isSameTag) {\n    return false;\n  }\n  stack || (stack = new _Stack2.default());\n  return (0, _equalObjects2.default)(object, other, equalFunc, customizer, bitmask, stack);\n}\n\nexports.default = baseIsEqualDeep;\n\n/***/ }),\n/* 420 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _Stack = __webpack_require__(123);\n\nvar _Stack2 = _interopRequireDefault(_Stack);\n\nvar _baseIsEqual = __webpack_require__(130);\n\nvar _baseIsEqual2 = _interopRequireDefault(_baseIsEqual);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** Used to compose bitmasks for comparison styles. */\nvar UNORDERED_COMPARE_FLAG = 1,\n    PARTIAL_COMPARE_FLAG = 2;\n\n/**\n * The base implementation of `_.isMatch` without support for iteratee shorthands.\n *\n * @private\n * @param {Object} object The object to inspect.\n * @param {Object} source The object of property values to match.\n * @param {Array} matchData The property names, values, and compare flags to match.\n * @param {Function} [customizer] The function to customize comparisons.\n * @returns {boolean} Returns `true` if `object` is a match, else `false`.\n */\nfunction baseIsMatch(object, source, matchData, customizer) {\n  var index = matchData.length,\n      length = index,\n      noCustomizer = !customizer;\n\n  if (object == null) {\n    return !length;\n  }\n  object = Object(object);\n  while (index--) {\n    var data = matchData[index];\n    if (noCustomizer && data[2] ? data[1] !== object[data[0]] : !(data[0] in object)) {\n      return false;\n    }\n  }\n  while (++index < length) {\n    data = matchData[index];\n    var key = data[0],\n        objValue = object[key],\n        srcValue = data[1];\n\n    if (noCustomizer && data[2]) {\n      if (objValue === undefined && !(key in object)) {\n        return false;\n      }\n    } else {\n      var stack = new _Stack2.default();\n      if (customizer) {\n        var result = customizer(objValue, srcValue, key, object, source, stack);\n      }\n      if (!(result === undefined ? (0, _baseIsEqual2.default)(srcValue, objValue, customizer, UNORDERED_COMPARE_FLAG | PARTIAL_COMPARE_FLAG, stack) : result)) {\n        return false;\n      }\n    }\n  }\n  return true;\n}\n\nexports.default = baseIsMatch;\n\n/***/ }),\n/* 421 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeKeys = Object.keys;\n\n/**\n * The base implementation of `_.keys` which doesn't skip the constructor\n * property of prototypes or treat sparse arrays as dense.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n */\nfunction baseKeys(object) {\n  return nativeKeys(Object(object));\n}\n\nexports.default = baseKeys;\n\n/***/ }),\n/* 422 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _Reflect = __webpack_require__(405);\n\nvar _Reflect2 = _interopRequireDefault(_Reflect);\n\nvar _iteratorToArray = __webpack_require__(459);\n\nvar _iteratorToArray2 = _interopRequireDefault(_iteratorToArray);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Built-in value references. */\nvar enumerate = _Reflect2.default ? _Reflect2.default.enumerate : undefined,\n    propertyIsEnumerable = objectProto.propertyIsEnumerable;\n\n/**\n * The base implementation of `_.keysIn` which doesn't skip the constructor\n * property of prototypes or treat sparse arrays as dense.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n */\nfunction baseKeysIn(object) {\n  object = object == null ? object : Object(object);\n\n  var result = [];\n  for (var key in object) {\n    result.push(key);\n  }\n  return result;\n}\n\n// Fallback for IE < 9 with es6-shim.\nif (enumerate && !propertyIsEnumerable.call({ 'valueOf': 1 }, 'valueOf')) {\n  baseKeysIn = function baseKeysIn(object) {\n    return (0, _iteratorToArray2.default)(enumerate(object));\n  };\n}\n\nexports.default = baseKeysIn;\n\n/***/ }),\n/* 423 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseIsMatch = __webpack_require__(420);\n\nvar _baseIsMatch2 = _interopRequireDefault(_baseIsMatch);\n\nvar _getMatchData = __webpack_require__(447);\n\nvar _getMatchData2 = _interopRequireDefault(_getMatchData);\n\nvar _matchesStrictComparable = __webpack_require__(212);\n\nvar _matchesStrictComparable2 = _interopRequireDefault(_matchesStrictComparable);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * The base implementation of `_.matches` which doesn't clone `source`.\n *\n * @private\n * @param {Object} source The object of property values to match.\n * @returns {Function} Returns the new spec function.\n */\nfunction baseMatches(source) {\n  var matchData = (0, _getMatchData2.default)(source);\n  if (matchData.length == 1 && matchData[0][2]) {\n    return (0, _matchesStrictComparable2.default)(matchData[0][0], matchData[0][1]);\n  }\n  return function (object) {\n    return object === source || (0, _baseIsMatch2.default)(object, source, matchData);\n  };\n}\n\nexports.default = baseMatches;\n\n/***/ }),\n/* 424 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseIsEqual = __webpack_require__(130);\n\nvar _baseIsEqual2 = _interopRequireDefault(_baseIsEqual);\n\nvar _get = __webpack_require__(230);\n\nvar _get2 = _interopRequireDefault(_get);\n\nvar _hasIn = __webpack_require__(485);\n\nvar _hasIn2 = _interopRequireDefault(_hasIn);\n\nvar _isKey = __webpack_require__(50);\n\nvar _isKey2 = _interopRequireDefault(_isKey);\n\nvar _isStrictComparable = __webpack_require__(211);\n\nvar _isStrictComparable2 = _interopRequireDefault(_isStrictComparable);\n\nvar _matchesStrictComparable = __webpack_require__(212);\n\nvar _matchesStrictComparable2 = _interopRequireDefault(_matchesStrictComparable);\n\nvar _toKey = __webpack_require__(51);\n\nvar _toKey2 = _interopRequireDefault(_toKey);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** Used to compose bitmasks for comparison styles. */\nvar UNORDERED_COMPARE_FLAG = 1,\n    PARTIAL_COMPARE_FLAG = 2;\n\n/**\n * The base implementation of `_.matchesProperty` which doesn't clone `srcValue`.\n *\n * @private\n * @param {string} path The path of the property to get.\n * @param {*} srcValue The value to match.\n * @returns {Function} Returns the new spec function.\n */\nfunction baseMatchesProperty(path, srcValue) {\n  if ((0, _isKey2.default)(path) && (0, _isStrictComparable2.default)(srcValue)) {\n    return (0, _matchesStrictComparable2.default)((0, _toKey2.default)(path), srcValue);\n  }\n  return function (object) {\n    var objValue = (0, _get2.default)(object, path);\n    return objValue === undefined && objValue === srcValue ? (0, _hasIn2.default)(object, path) : (0, _baseIsEqual2.default)(srcValue, objValue, undefined, UNORDERED_COMPARE_FLAG | PARTIAL_COMPARE_FLAG);\n  };\n}\n\nexports.default = baseMatchesProperty;\n\n/***/ }),\n/* 425 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _isIndex = __webpack_require__(35);\n\nvar _isIndex2 = _interopRequireDefault(_isIndex);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * The base implementation of `_.nth` which doesn't coerce `n` to an integer.\n *\n * @private\n * @param {Array} array The array to query.\n * @param {number} n The index of the element to return.\n * @returns {*} Returns the nth element of `array`.\n */\nfunction baseNth(array, n) {\n  var length = array.length;\n  if (!length) {\n    return;\n  }\n  n += n < 0 ? length : 0;\n  return (0, _isIndex2.default)(n, length) ? array[n] : undefined;\n}\n\nexports.default = baseNth;\n\n/***/ }),\n/* 426 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseGet = __webpack_require__(127);\n\nvar _baseGet2 = _interopRequireDefault(_baseGet);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * A specialized version of `baseProperty` which supports deep paths.\n *\n * @private\n * @param {Array|string} path The path of the property to get.\n * @returns {Function} Returns the new accessor function.\n */\nfunction basePropertyDeep(path) {\n  return function (object) {\n    return (0, _baseGet2.default)(object, path);\n  };\n}\n\nexports.default = basePropertyDeep;\n\n/***/ }),\n/* 427 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _assignValue = __webpack_require__(62);\n\nvar _assignValue2 = _interopRequireDefault(_assignValue);\n\nvar _castPath = __webpack_require__(87);\n\nvar _castPath2 = _interopRequireDefault(_castPath);\n\nvar _isIndex = __webpack_require__(35);\n\nvar _isIndex2 = _interopRequireDefault(_isIndex);\n\nvar _isKey = __webpack_require__(50);\n\nvar _isKey2 = _interopRequireDefault(_isKey);\n\nvar _isObject = __webpack_require__(13);\n\nvar _isObject2 = _interopRequireDefault(_isObject);\n\nvar _toKey = __webpack_require__(51);\n\nvar _toKey2 = _interopRequireDefault(_toKey);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * The base implementation of `_.set`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array|string} path The path of the property to set.\n * @param {*} value The value to set.\n * @param {Function} [customizer] The function to customize path creation.\n * @returns {Object} Returns `object`.\n */\nfunction baseSet(object, path, value, customizer) {\n  path = (0, _isKey2.default)(path, object) ? [path] : (0, _castPath2.default)(path);\n\n  var index = -1,\n      length = path.length,\n      lastIndex = length - 1,\n      nested = object;\n\n  while (nested != null && ++index < length) {\n    var key = (0, _toKey2.default)(path[index]);\n    if ((0, _isObject2.default)(nested)) {\n      var newValue = value;\n      if (index != lastIndex) {\n        var objValue = nested[key];\n        newValue = customizer ? customizer(objValue, key, nested) : undefined;\n        if (newValue === undefined) {\n          newValue = objValue == null ? (0, _isIndex2.default)(path[index + 1]) ? [] : {} : objValue;\n        }\n      }\n      (0, _assignValue2.default)(nested, key, newValue);\n    }\n    nested = nested[key];\n  }\n  return object;\n}\n\nexports.default = baseSet;\n\n/***/ }),\n/* 428 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _arrayMap = __webpack_require__(26);\n\nvar _arrayMap2 = _interopRequireDefault(_arrayMap);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * The base implementation of `_.toPairs` and `_.toPairsIn` which creates an array\n * of key-value pairs for `object` corresponding to the property names of `props`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array} props The property names to get values for.\n * @returns {Object} Returns the key-value pairs.\n */\nfunction baseToPairs(object, props) {\n  return (0, _arrayMap2.default)(props, function (key) {\n    return [key, object[key]];\n  });\n}\n\nexports.default = baseToPairs;\n\n/***/ }),\n/* 429 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _Symbol2 = __webpack_require__(124);\n\nvar _Symbol3 = _interopRequireDefault(_Symbol2);\n\nvar _isSymbol = __webpack_require__(44);\n\nvar _isSymbol2 = _interopRequireDefault(_isSymbol);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** Used as references for various `Number` constants. */\nvar INFINITY = 1 / 0;\n\n/** Used to convert symbols to primitives and strings. */\nvar symbolProto = _Symbol3.default ? _Symbol3.default.prototype : undefined,\n    symbolToString = symbolProto ? symbolProto.toString : undefined;\n\n/**\n * The base implementation of `_.toString` which doesn't convert nullish\n * values to empty strings.\n *\n * @private\n * @param {*} value The value to process.\n * @returns {string} Returns the string.\n */\nfunction baseToString(value) {\n  // Exit early for strings to avoid a performance hit in some environments.\n  if (typeof value == 'string') {\n    return value;\n  }\n  if ((0, _isSymbol2.default)(value)) {\n    return symbolToString ? symbolToString.call(value) : '';\n  }\n  var result = value + '';\n  return result == '0' && 1 / value == -INFINITY ? '-0' : result;\n}\n\nexports.default = baseToString;\n\n/***/ }),\n/* 430 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * Checks if `value` is a global object.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {null|Object} Returns `value` if it's a global object, else `null`.\n */\nfunction checkGlobal(value) {\n  return value && value.Object === Object ? value : null;\n}\n\nexports.default = checkGlobal;\n\n/***/ }),\n/* 431 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * Creates a clone of  `buffer`.\n *\n * @private\n * @param {Buffer} buffer The buffer to clone.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Buffer} Returns the cloned buffer.\n */\nfunction cloneBuffer(buffer, isDeep) {\n  if (isDeep) {\n    return buffer.slice();\n  }\n  var result = new buffer.constructor(buffer.length);\n  buffer.copy(result);\n  return result;\n}\n\nexports.default = cloneBuffer;\n\n/***/ }),\n/* 432 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _cloneArrayBuffer = __webpack_require__(138);\n\nvar _cloneArrayBuffer2 = _interopRequireDefault(_cloneArrayBuffer);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Creates a clone of `dataView`.\n *\n * @private\n * @param {Object} dataView The data view to clone.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Object} Returns the cloned data view.\n */\nfunction cloneDataView(dataView, isDeep) {\n  var buffer = isDeep ? (0, _cloneArrayBuffer2.default)(dataView.buffer) : dataView.buffer;\n  return new dataView.constructor(buffer, dataView.byteOffset, dataView.byteLength);\n}\n\nexports.default = cloneDataView;\n\n/***/ }),\n/* 433 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _addMapEntry = __webpack_require__(407);\n\nvar _addMapEntry2 = _interopRequireDefault(_addMapEntry);\n\nvar _arrayReduce = __webpack_require__(198);\n\nvar _arrayReduce2 = _interopRequireDefault(_arrayReduce);\n\nvar _mapToArray = __webpack_require__(142);\n\nvar _mapToArray2 = _interopRequireDefault(_mapToArray);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Creates a clone of `map`.\n *\n * @private\n * @param {Object} map The map to clone.\n * @param {Function} cloneFunc The function to clone values.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Object} Returns the cloned map.\n */\nfunction cloneMap(map, isDeep, cloneFunc) {\n  var array = isDeep ? cloneFunc((0, _mapToArray2.default)(map), true) : (0, _mapToArray2.default)(map);\n  return (0, _arrayReduce2.default)(array, _addMapEntry2.default, new map.constructor());\n}\n\nexports.default = cloneMap;\n\n/***/ }),\n/* 434 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/** Used to match `RegExp` flags from their coerced string values. */\nvar reFlags = /\\w*$/;\n\n/**\n * Creates a clone of `regexp`.\n *\n * @private\n * @param {Object} regexp The regexp to clone.\n * @returns {Object} Returns the cloned regexp.\n */\nfunction cloneRegExp(regexp) {\n  var result = new regexp.constructor(regexp.source, reFlags.exec(regexp));\n  result.lastIndex = regexp.lastIndex;\n  return result;\n}\n\nexports.default = cloneRegExp;\n\n/***/ }),\n/* 435 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _addSetEntry = __webpack_require__(408);\n\nvar _addSetEntry2 = _interopRequireDefault(_addSetEntry);\n\nvar _arrayReduce = __webpack_require__(198);\n\nvar _arrayReduce2 = _interopRequireDefault(_arrayReduce);\n\nvar _setToArray = __webpack_require__(93);\n\nvar _setToArray2 = _interopRequireDefault(_setToArray);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Creates a clone of `set`.\n *\n * @private\n * @param {Object} set The set to clone.\n * @param {Function} cloneFunc The function to clone values.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Object} Returns the cloned set.\n */\nfunction cloneSet(set, isDeep, cloneFunc) {\n  var array = isDeep ? cloneFunc((0, _setToArray2.default)(set), true) : (0, _setToArray2.default)(set);\n  return (0, _arrayReduce2.default)(array, _addSetEntry2.default, new set.constructor());\n}\n\nexports.default = cloneSet;\n\n/***/ }),\n/* 436 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _Symbol2 = __webpack_require__(124);\n\nvar _Symbol3 = _interopRequireDefault(_Symbol2);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** Used to convert symbols to primitives and strings. */\nvar symbolProto = _Symbol3.default ? _Symbol3.default.prototype : undefined,\n    symbolValueOf = symbolProto ? symbolProto.valueOf : undefined;\n\n/**\n * Creates a clone of the `symbol` object.\n *\n * @private\n * @param {Object} symbol The symbol object to clone.\n * @returns {Object} Returns the cloned symbol object.\n */\nfunction cloneSymbol(symbol) {\n  return symbolValueOf ? Object(symbolValueOf.call(symbol)) : {};\n}\n\nexports.default = cloneSymbol;\n\n/***/ }),\n/* 437 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _cloneArrayBuffer = __webpack_require__(138);\n\nvar _cloneArrayBuffer2 = _interopRequireDefault(_cloneArrayBuffer);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Creates a clone of `typedArray`.\n *\n * @private\n * @param {Object} typedArray The typed array to clone.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Object} Returns the cloned typed array.\n */\nfunction cloneTypedArray(typedArray, isDeep) {\n  var buffer = isDeep ? (0, _cloneArrayBuffer2.default)(typedArray.buffer) : typedArray.buffer;\n  return new typedArray.constructor(buffer, typedArray.byteOffset, typedArray.length);\n}\n\nexports.default = cloneTypedArray;\n\n/***/ }),\n/* 438 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _isSymbol = __webpack_require__(44);\n\nvar _isSymbol2 = _interopRequireDefault(_isSymbol);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Compares values to sort them in ascending order.\n *\n * @private\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {number} Returns the sort order indicator for `value`.\n */\nfunction compareAscending(value, other) {\n  if (value !== other) {\n    var valIsDefined = value !== undefined,\n        valIsNull = value === null,\n        valIsReflexive = value === value,\n        valIsSymbol = (0, _isSymbol2.default)(value);\n\n    var othIsDefined = other !== undefined,\n        othIsNull = other === null,\n        othIsReflexive = other === other,\n        othIsSymbol = (0, _isSymbol2.default)(other);\n\n    if (!othIsNull && !othIsSymbol && !valIsSymbol && value > other || valIsSymbol && othIsDefined && othIsReflexive && !othIsNull && !othIsSymbol || valIsNull && othIsDefined && othIsReflexive || !valIsDefined && othIsReflexive || !valIsReflexive) {\n      return 1;\n    }\n    if (!valIsNull && !valIsSymbol && !othIsSymbol && value < other || othIsSymbol && valIsDefined && valIsReflexive && !valIsNull && !valIsSymbol || othIsNull && valIsDefined && valIsReflexive || !othIsDefined && valIsReflexive || !othIsReflexive) {\n      return -1;\n    }\n  }\n  return 0;\n}\n\nexports.default = compareAscending;\n\n/***/ }),\n/* 439 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _copyObject = __webpack_require__(139);\n\nvar _copyObject2 = _interopRequireDefault(_copyObject);\n\nvar _getSymbols = __webpack_require__(208);\n\nvar _getSymbols2 = _interopRequireDefault(_getSymbols);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Copies own symbol properties of `source` to `object`.\n *\n * @private\n * @param {Object} source The object to copy symbols from.\n * @param {Object} [object={}] The object to copy symbols to.\n * @returns {Object} Returns `object`.\n */\nfunction copySymbols(source, object) {\n  return (0, _copyObject2.default)(source, (0, _getSymbols2.default)(source), object);\n}\n\nexports.default = copySymbols;\n\n/***/ }),\n/* 440 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _isIterateeCall = __webpack_require__(90);\n\nvar _isIterateeCall2 = _interopRequireDefault(_isIterateeCall);\n\nvar _rest = __webpack_require__(9);\n\nvar _rest2 = _interopRequireDefault(_rest);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Creates a function like `_.assign`.\n *\n * @private\n * @param {Function} assigner The function to assign values.\n * @returns {Function} Returns the new assigner function.\n */\nfunction createAssigner(assigner) {\n  return (0, _rest2.default)(function (object, sources) {\n    var index = -1,\n        length = sources.length,\n        customizer = length > 1 ? sources[length - 1] : undefined,\n        guard = length > 2 ? sources[2] : undefined;\n\n    customizer = assigner.length > 3 && typeof customizer == 'function' ? (length--, customizer) : undefined;\n\n    if (guard && (0, _isIterateeCall2.default)(sources[0], sources[1], guard)) {\n      customizer = length < 3 ? undefined : customizer;\n      length = 1;\n    }\n    object = Object(object);\n    while (++index < length) {\n      var source = sources[index];\n      if (source) {\n        assigner(object, source, index, customizer);\n      }\n    }\n    return object;\n  });\n}\n\nexports.default = createAssigner;\n\n/***/ }),\n/* 441 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _Set = __webpack_require__(195);\n\nvar _Set2 = _interopRequireDefault(_Set);\n\nvar _noop = __webpack_require__(492);\n\nvar _noop2 = _interopRequireDefault(_noop);\n\nvar _setToArray = __webpack_require__(93);\n\nvar _setToArray2 = _interopRequireDefault(_setToArray);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** Used as references for various `Number` constants. */\nvar INFINITY = 1 / 0;\n\n/**\n * Creates a set of `values`.\n *\n * @private\n * @param {Array} values The values to add to the set.\n * @returns {Object} Returns the new set.\n */\nvar createSet = !(_Set2.default && 1 / (0, _setToArray2.default)(new _Set2.default([, -0]))[1] == INFINITY) ? _noop2.default : function (values) {\n  return new _Set2.default(values);\n};\n\nexports.default = createSet;\n\n/***/ }),\n/* 442 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseToPairs = __webpack_require__(428);\n\nvar _baseToPairs2 = _interopRequireDefault(_baseToPairs);\n\nvar _getTag = __webpack_require__(141);\n\nvar _getTag2 = _interopRequireDefault(_getTag);\n\nvar _mapToArray = __webpack_require__(142);\n\nvar _mapToArray2 = _interopRequireDefault(_mapToArray);\n\nvar _setToPairs = __webpack_require__(473);\n\nvar _setToPairs2 = _interopRequireDefault(_setToPairs);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** `Object#toString` result references. */\nvar mapTag = '[object Map]',\n    setTag = '[object Set]';\n\n/**\n * Creates a `_.toPairs` or `_.toPairsIn` function.\n *\n * @private\n * @param {Function} keysFunc The function to get the keys of a given object.\n * @returns {Function} Returns the new pairs function.\n */\nfunction createToPairs(keysFunc) {\n  return function (object) {\n    var tag = (0, _getTag2.default)(object);\n    if (tag == mapTag) {\n      return (0, _mapToArray2.default)(object);\n    }\n    if (tag == setTag) {\n      return (0, _setToPairs2.default)(object);\n    }\n    return (0, _baseToPairs2.default)(object, keysFunc(object));\n  };\n}\n\nexports.default = createToPairs;\n\n/***/ }),\n/* 443 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _Symbol2 = __webpack_require__(124);\n\nvar _Symbol3 = _interopRequireDefault(_Symbol2);\n\nvar _Uint8Array = __webpack_require__(196);\n\nvar _Uint8Array2 = _interopRequireDefault(_Uint8Array);\n\nvar _equalArrays = __webpack_require__(207);\n\nvar _equalArrays2 = _interopRequireDefault(_equalArrays);\n\nvar _mapToArray = __webpack_require__(142);\n\nvar _mapToArray2 = _interopRequireDefault(_mapToArray);\n\nvar _setToArray = __webpack_require__(93);\n\nvar _setToArray2 = _interopRequireDefault(_setToArray);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** Used to compose bitmasks for comparison styles. */\nvar UNORDERED_COMPARE_FLAG = 1,\n    PARTIAL_COMPARE_FLAG = 2;\n\n/** `Object#toString` result references. */\nvar boolTag = '[object Boolean]',\n    dateTag = '[object Date]',\n    errorTag = '[object Error]',\n    mapTag = '[object Map]',\n    numberTag = '[object Number]',\n    regexpTag = '[object RegExp]',\n    setTag = '[object Set]',\n    stringTag = '[object String]',\n    symbolTag = '[object Symbol]';\n\nvar arrayBufferTag = '[object ArrayBuffer]',\n    dataViewTag = '[object DataView]';\n\n/** Used to convert symbols to primitives and strings. */\nvar symbolProto = _Symbol3.default ? _Symbol3.default.prototype : undefined,\n    symbolValueOf = symbolProto ? symbolProto.valueOf : undefined;\n\n/**\n * A specialized version of `baseIsEqualDeep` for comparing objects of\n * the same `toStringTag`.\n *\n * **Note:** This function only supports comparing values with tags of\n * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.\n *\n * @private\n * @param {Object} object The object to compare.\n * @param {Object} other The other object to compare.\n * @param {string} tag The `toStringTag` of the objects to compare.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Function} customizer The function to customize comparisons.\n * @param {number} bitmask The bitmask of comparison flags. See `baseIsEqual`\n *  for more details.\n * @param {Object} stack Tracks traversed `object` and `other` objects.\n * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n */\nfunction equalByTag(object, other, tag, equalFunc, customizer, bitmask, stack) {\n  switch (tag) {\n    case dataViewTag:\n      if (object.byteLength != other.byteLength || object.byteOffset != other.byteOffset) {\n        return false;\n      }\n      object = object.buffer;\n      other = other.buffer;\n\n    case arrayBufferTag:\n      if (object.byteLength != other.byteLength || !equalFunc(new _Uint8Array2.default(object), new _Uint8Array2.default(other))) {\n        return false;\n      }\n      return true;\n\n    case boolTag:\n    case dateTag:\n      // Coerce dates and booleans to numbers, dates to milliseconds and\n      // booleans to `1` or `0` treating invalid dates coerced to `NaN` as\n      // not equal.\n      return +object == +other;\n\n    case errorTag:\n      return object.name == other.name && object.message == other.message;\n\n    case numberTag:\n      // Treat `NaN` vs. `NaN` as equal.\n      return object != +object ? other != +other : object == +other;\n\n    case regexpTag:\n    case stringTag:\n      // Coerce regexes to strings and treat strings, primitives and objects,\n      // as equal. See http://www.ecma-international.org/ecma-262/6.0/#sec-regexp.prototype.tostring\n      // for more details.\n      return object == other + '';\n\n    case mapTag:\n      var convert = _mapToArray2.default;\n\n    case setTag:\n      var isPartial = bitmask & PARTIAL_COMPARE_FLAG;\n      convert || (convert = _setToArray2.default);\n\n      if (object.size != other.size && !isPartial) {\n        return false;\n      }\n      // Assume cyclic values are equal.\n      var stacked = stack.get(object);\n      if (stacked) {\n        return stacked == other;\n      }\n      bitmask |= UNORDERED_COMPARE_FLAG;\n      stack.set(object, other);\n\n      // Recursively compare objects (susceptible to call stack limits).\n      return (0, _equalArrays2.default)(convert(object), convert(other), equalFunc, customizer, bitmask, stack);\n\n    case symbolTag:\n      if (symbolValueOf) {\n        return symbolValueOf.call(object) == symbolValueOf.call(other);\n      }\n  }\n  return false;\n}\n\nexports.default = equalByTag;\n\n/***/ }),\n/* 444 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseHas = __webpack_require__(201);\n\nvar _baseHas2 = _interopRequireDefault(_baseHas);\n\nvar _keys = __webpack_require__(64);\n\nvar _keys2 = _interopRequireDefault(_keys);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** Used to compose bitmasks for comparison styles. */\nvar PARTIAL_COMPARE_FLAG = 2;\n\n/**\n * A specialized version of `baseIsEqualDeep` for objects with support for\n * partial deep comparisons.\n *\n * @private\n * @param {Object} object The object to compare.\n * @param {Object} other The other object to compare.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Function} customizer The function to customize comparisons.\n * @param {number} bitmask The bitmask of comparison flags. See `baseIsEqual`\n *  for more details.\n * @param {Object} stack Tracks traversed `object` and `other` objects.\n * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n */\nfunction equalObjects(object, other, equalFunc, customizer, bitmask, stack) {\n  var isPartial = bitmask & PARTIAL_COMPARE_FLAG,\n      objProps = (0, _keys2.default)(object),\n      objLength = objProps.length,\n      othProps = (0, _keys2.default)(other),\n      othLength = othProps.length;\n\n  if (objLength != othLength && !isPartial) {\n    return false;\n  }\n  var index = objLength;\n  while (index--) {\n    var key = objProps[index];\n    if (!(isPartial ? key in other : (0, _baseHas2.default)(other, key))) {\n      return false;\n    }\n  }\n  // Assume cyclic values are equal.\n  var stacked = stack.get(object);\n  if (stacked) {\n    return stacked == other;\n  }\n  var result = true;\n  stack.set(object, other);\n\n  var skipCtor = isPartial;\n  while (++index < objLength) {\n    key = objProps[index];\n    var objValue = object[key],\n        othValue = other[key];\n\n    if (customizer) {\n      var compared = isPartial ? customizer(othValue, objValue, key, other, object, stack) : customizer(objValue, othValue, key, object, other, stack);\n    }\n    // Recursively compare objects (susceptible to call stack limits).\n    if (!(compared === undefined ? objValue === othValue || equalFunc(objValue, othValue, customizer, bitmask, stack) : compared)) {\n      result = false;\n      break;\n    }\n    skipCtor || (skipCtor = key == 'constructor');\n  }\n  if (result && !skipCtor) {\n    var objCtor = object.constructor,\n        othCtor = other.constructor;\n\n    // Non `Object` object instances with different constructors are not equal.\n    if (objCtor != othCtor && 'constructor' in object && 'constructor' in other && !(typeof objCtor == 'function' && objCtor instanceof objCtor && typeof othCtor == 'function' && othCtor instanceof othCtor)) {\n      result = false;\n    }\n  }\n  stack['delete'](object);\n  return result;\n}\n\nexports.default = equalObjects;\n\n/***/ }),\n/* 445 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseGetAllKeys = __webpack_require__(416);\n\nvar _baseGetAllKeys2 = _interopRequireDefault(_baseGetAllKeys);\n\nvar _getSymbols = __webpack_require__(208);\n\nvar _getSymbols2 = _interopRequireDefault(_getSymbols);\n\nvar _keys = __webpack_require__(64);\n\nvar _keys2 = _interopRequireDefault(_keys);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Creates an array of own enumerable property names and symbols of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names and symbols.\n */\nfunction getAllKeys(object) {\n  return (0, _baseGetAllKeys2.default)(object, _keys2.default, _getSymbols2.default);\n}\n\nexports.default = getAllKeys;\n\n/***/ }),\n/* 446 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseProperty = __webpack_require__(131);\n\nvar _baseProperty2 = _interopRequireDefault(_baseProperty);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Gets the \"length\" property value of `object`.\n *\n * **Note:** This function is used to avoid a\n * [JIT bug](https://bugs.webkit.org/show_bug.cgi?id=142792) that affects\n * Safari on at least iOS 8.1-8.3 ARM64.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {*} Returns the \"length\" value.\n */\nvar getLength = (0, _baseProperty2.default)('length');\n\nexports.default = getLength;\n\n/***/ }),\n/* 447 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _isStrictComparable = __webpack_require__(211);\n\nvar _isStrictComparable2 = _interopRequireDefault(_isStrictComparable);\n\nvar _toPairs = __webpack_require__(498);\n\nvar _toPairs2 = _interopRequireDefault(_toPairs);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Gets the property names, values, and compare flags of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the match data of `object`.\n */\nfunction getMatchData(object) {\n  var result = (0, _toPairs2.default)(object),\n      length = result.length;\n\n  while (length--) {\n    result[length][2] = (0, _isStrictComparable2.default)(result[length][1]);\n  }\n  return result;\n}\n\nexports.default = getMatchData;\n\n/***/ }),\n/* 448 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _castPath = __webpack_require__(87);\n\nvar _castPath2 = _interopRequireDefault(_castPath);\n\nvar _isArguments = __webpack_require__(147);\n\nvar _isArguments2 = _interopRequireDefault(_isArguments);\n\nvar _isArray = __webpack_require__(11);\n\nvar _isArray2 = _interopRequireDefault(_isArray);\n\nvar _isIndex = __webpack_require__(35);\n\nvar _isIndex2 = _interopRequireDefault(_isIndex);\n\nvar _isKey = __webpack_require__(50);\n\nvar _isKey2 = _interopRequireDefault(_isKey);\n\nvar _isLength = __webpack_require__(96);\n\nvar _isLength2 = _interopRequireDefault(_isLength);\n\nvar _isString = __webpack_require__(149);\n\nvar _isString2 = _interopRequireDefault(_isString);\n\nvar _toKey = __webpack_require__(51);\n\nvar _toKey2 = _interopRequireDefault(_toKey);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Checks if `path` exists on `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array|string} path The path to check.\n * @param {Function} hasFunc The function to check properties.\n * @returns {boolean} Returns `true` if `path` exists, else `false`.\n */\nfunction hasPath(object, path, hasFunc) {\n  path = (0, _isKey2.default)(path, object) ? [path] : (0, _castPath2.default)(path);\n\n  var result,\n      index = -1,\n      length = path.length;\n\n  while (++index < length) {\n    var key = (0, _toKey2.default)(path[index]);\n    if (!(result = object != null && hasFunc(object, key))) {\n      break;\n    }\n    object = object[key];\n  }\n  if (result) {\n    return result;\n  }\n  var length = object ? object.length : 0;\n  return !!length && (0, _isLength2.default)(length) && (0, _isIndex2.default)(key, length) && ((0, _isArray2.default)(object) || (0, _isString2.default)(object) || (0, _isArguments2.default)(object));\n}\n\nexports.default = hasPath;\n\n/***/ }),\n/* 449 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _nativeCreate = __webpack_require__(92);\n\nvar _nativeCreate2 = _interopRequireDefault(_nativeCreate);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Removes all key-value entries from the hash.\n *\n * @private\n * @name clear\n * @memberOf Hash\n */\nfunction hashClear() {\n  this.__data__ = _nativeCreate2.default ? (0, _nativeCreate2.default)(null) : {};\n}\n\nexports.default = hashClear;\n\n/***/ }),\n/* 450 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * Removes `key` and its value from the hash.\n *\n * @private\n * @name delete\n * @memberOf Hash\n * @param {Object} hash The hash to modify.\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\nfunction hashDelete(key) {\n  return this.has(key) && delete this.__data__[key];\n}\n\nexports.default = hashDelete;\n\n/***/ }),\n/* 451 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _nativeCreate = __webpack_require__(92);\n\nvar _nativeCreate2 = _interopRequireDefault(_nativeCreate);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** Used to stand-in for `undefined` hash values. */\nvar HASH_UNDEFINED = '__lodash_hash_undefined__';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/**\n * Gets the hash value for `key`.\n *\n * @private\n * @name get\n * @memberOf Hash\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\nfunction hashGet(key) {\n  var data = this.__data__;\n  if (_nativeCreate2.default) {\n    var result = data[key];\n    return result === HASH_UNDEFINED ? undefined : result;\n  }\n  return hasOwnProperty.call(data, key) ? data[key] : undefined;\n}\n\nexports.default = hashGet;\n\n/***/ }),\n/* 452 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _nativeCreate = __webpack_require__(92);\n\nvar _nativeCreate2 = _interopRequireDefault(_nativeCreate);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/**\n * Checks if a hash value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf Hash\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\nfunction hashHas(key) {\n  var data = this.__data__;\n  return _nativeCreate2.default ? data[key] !== undefined : hasOwnProperty.call(data, key);\n}\n\nexports.default = hashHas;\n\n/***/ }),\n/* 453 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _nativeCreate = __webpack_require__(92);\n\nvar _nativeCreate2 = _interopRequireDefault(_nativeCreate);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** Used to stand-in for `undefined` hash values. */\nvar HASH_UNDEFINED = '__lodash_hash_undefined__';\n\n/**\n * Sets the hash `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf Hash\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the hash instance.\n */\nfunction hashSet(key, value) {\n  var data = this.__data__;\n  data[key] = _nativeCreate2.default && value === undefined ? HASH_UNDEFINED : value;\n  return this;\n}\n\nexports.default = hashSet;\n\n/***/ }),\n/* 454 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/**\n * Initializes an array clone.\n *\n * @private\n * @param {Array} array The array to clone.\n * @returns {Array} Returns the initialized clone.\n */\nfunction initCloneArray(array) {\n  var length = array.length,\n      result = array.constructor(length);\n\n  // Add properties assigned by `RegExp#exec`.\n  if (length && typeof array[0] == 'string' && hasOwnProperty.call(array, 'index')) {\n    result.index = array.index;\n    result.input = array.input;\n  }\n  return result;\n}\n\nexports.default = initCloneArray;\n\n/***/ }),\n/* 455 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _cloneArrayBuffer = __webpack_require__(138);\n\nvar _cloneArrayBuffer2 = _interopRequireDefault(_cloneArrayBuffer);\n\nvar _cloneDataView = __webpack_require__(432);\n\nvar _cloneDataView2 = _interopRequireDefault(_cloneDataView);\n\nvar _cloneMap = __webpack_require__(433);\n\nvar _cloneMap2 = _interopRequireDefault(_cloneMap);\n\nvar _cloneRegExp = __webpack_require__(434);\n\nvar _cloneRegExp2 = _interopRequireDefault(_cloneRegExp);\n\nvar _cloneSet = __webpack_require__(435);\n\nvar _cloneSet2 = _interopRequireDefault(_cloneSet);\n\nvar _cloneSymbol = __webpack_require__(436);\n\nvar _cloneSymbol2 = _interopRequireDefault(_cloneSymbol);\n\nvar _cloneTypedArray = __webpack_require__(437);\n\nvar _cloneTypedArray2 = _interopRequireDefault(_cloneTypedArray);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** `Object#toString` result references. */\nvar boolTag = '[object Boolean]',\n    dateTag = '[object Date]',\n    mapTag = '[object Map]',\n    numberTag = '[object Number]',\n    regexpTag = '[object RegExp]',\n    setTag = '[object Set]',\n    stringTag = '[object String]',\n    symbolTag = '[object Symbol]';\n\nvar arrayBufferTag = '[object ArrayBuffer]',\n    dataViewTag = '[object DataView]',\n    float32Tag = '[object Float32Array]',\n    float64Tag = '[object Float64Array]',\n    int8Tag = '[object Int8Array]',\n    int16Tag = '[object Int16Array]',\n    int32Tag = '[object Int32Array]',\n    uint8Tag = '[object Uint8Array]',\n    uint8ClampedTag = '[object Uint8ClampedArray]',\n    uint16Tag = '[object Uint16Array]',\n    uint32Tag = '[object Uint32Array]';\n\n/**\n * Initializes an object clone based on its `toStringTag`.\n *\n * **Note:** This function only supports cloning values with tags of\n * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.\n *\n * @private\n * @param {Object} object The object to clone.\n * @param {string} tag The `toStringTag` of the object to clone.\n * @param {Function} cloneFunc The function to clone values.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Object} Returns the initialized clone.\n */\nfunction initCloneByTag(object, tag, cloneFunc, isDeep) {\n  var Ctor = object.constructor;\n  switch (tag) {\n    case arrayBufferTag:\n      return (0, _cloneArrayBuffer2.default)(object);\n\n    case boolTag:\n    case dateTag:\n      return new Ctor(+object);\n\n    case dataViewTag:\n      return (0, _cloneDataView2.default)(object, isDeep);\n\n    case float32Tag:case float64Tag:\n    case int8Tag:case int16Tag:case int32Tag:\n    case uint8Tag:case uint8ClampedTag:case uint16Tag:case uint32Tag:\n      return (0, _cloneTypedArray2.default)(object, isDeep);\n\n    case mapTag:\n      return (0, _cloneMap2.default)(object, isDeep, cloneFunc);\n\n    case numberTag:\n    case stringTag:\n      return new Ctor(object);\n\n    case regexpTag:\n      return (0, _cloneRegExp2.default)(object);\n\n    case setTag:\n      return (0, _cloneSet2.default)(object, isDeep, cloneFunc);\n\n    case symbolTag:\n      return (0, _cloneSymbol2.default)(object);\n  }\n}\n\nexports.default = initCloneByTag;\n\n/***/ }),\n/* 456 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseCreate = __webpack_require__(414);\n\nvar _baseCreate2 = _interopRequireDefault(_baseCreate);\n\nvar _getPrototype = __webpack_require__(140);\n\nvar _getPrototype2 = _interopRequireDefault(_getPrototype);\n\nvar _isPrototype = __webpack_require__(91);\n\nvar _isPrototype2 = _interopRequireDefault(_isPrototype);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Initializes an object clone.\n *\n * @private\n * @param {Object} object The object to clone.\n * @returns {Object} Returns the initialized clone.\n */\nfunction initCloneObject(object) {\n  return typeof object.constructor == 'function' && !(0, _isPrototype2.default)(object) ? (0, _baseCreate2.default)((0, _getPrototype2.default)(object)) : {};\n}\n\nexports.default = initCloneObject;\n\n/***/ }),\n/* 457 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _isArguments = __webpack_require__(147);\n\nvar _isArguments2 = _interopRequireDefault(_isArguments);\n\nvar _isArray = __webpack_require__(11);\n\nvar _isArray2 = _interopRequireDefault(_isArray);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Checks if `value` is a flattenable `arguments` object or array.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is flattenable, else `false`.\n */\nfunction isFlattenable(value) {\n  return (0, _isArray2.default)(value) || (0, _isArguments2.default)(value);\n}\n\nexports.default = isFlattenable;\n\n/***/ }),\n/* 458 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; };\n\n/**\n * Checks if `value` is suitable for use as unique object key.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is suitable, else `false`.\n */\nfunction isKeyable(value) {\n  var type = typeof value === 'undefined' ? 'undefined' : _typeof(value);\n  return type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean' ? value !== '__proto__' : value === null;\n}\n\nexports.default = isKeyable;\n\n/***/ }),\n/* 459 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * Converts `iterator` to an array.\n *\n * @private\n * @param {Object} iterator The iterator to convert.\n * @returns {Array} Returns the converted array.\n */\nfunction iteratorToArray(iterator) {\n  var data,\n      result = [];\n\n  while (!(data = iterator.next()).done) {\n    result.push(data.value);\n  }\n  return result;\n}\n\nexports.default = iteratorToArray;\n\n/***/ }),\n/* 460 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * Removes all key-value entries from the list cache.\n *\n * @private\n * @name clear\n * @memberOf ListCache\n */\nfunction listCacheClear() {\n  this.__data__ = [];\n}\n\nexports.default = listCacheClear;\n\n/***/ }),\n/* 461 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _assocIndexOf = __webpack_require__(84);\n\nvar _assocIndexOf2 = _interopRequireDefault(_assocIndexOf);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** Used for built-in method references. */\nvar arrayProto = Array.prototype;\n\n/** Built-in value references. */\nvar splice = arrayProto.splice;\n\n/**\n * Removes `key` and its value from the list cache.\n *\n * @private\n * @name delete\n * @memberOf ListCache\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\nfunction listCacheDelete(key) {\n  var data = this.__data__,\n      index = (0, _assocIndexOf2.default)(data, key);\n\n  if (index < 0) {\n    return false;\n  }\n  var lastIndex = data.length - 1;\n  if (index == lastIndex) {\n    data.pop();\n  } else {\n    splice.call(data, index, 1);\n  }\n  return true;\n}\n\nexports.default = listCacheDelete;\n\n/***/ }),\n/* 462 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _assocIndexOf = __webpack_require__(84);\n\nvar _assocIndexOf2 = _interopRequireDefault(_assocIndexOf);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Gets the list cache value for `key`.\n *\n * @private\n * @name get\n * @memberOf ListCache\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\nfunction listCacheGet(key) {\n  var data = this.__data__,\n      index = (0, _assocIndexOf2.default)(data, key);\n\n  return index < 0 ? undefined : data[index][1];\n}\n\nexports.default = listCacheGet;\n\n/***/ }),\n/* 463 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _assocIndexOf = __webpack_require__(84);\n\nvar _assocIndexOf2 = _interopRequireDefault(_assocIndexOf);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Checks if a list cache value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf ListCache\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\nfunction listCacheHas(key) {\n  return (0, _assocIndexOf2.default)(this.__data__, key) > -1;\n}\n\nexports.default = listCacheHas;\n\n/***/ }),\n/* 464 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _assocIndexOf = __webpack_require__(84);\n\nvar _assocIndexOf2 = _interopRequireDefault(_assocIndexOf);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Sets the list cache `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf ListCache\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the list cache instance.\n */\nfunction listCacheSet(key, value) {\n  var data = this.__data__,\n      index = (0, _assocIndexOf2.default)(data, key);\n\n  if (index < 0) {\n    data.push([key, value]);\n  } else {\n    data[index][1] = value;\n  }\n  return this;\n}\n\nexports.default = listCacheSet;\n\n/***/ }),\n/* 465 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _Hash = __webpack_require__(403);\n\nvar _Hash2 = _interopRequireDefault(_Hash);\n\nvar _ListCache = __webpack_require__(80);\n\nvar _ListCache2 = _interopRequireDefault(_ListCache);\n\nvar _Map = __webpack_require__(194);\n\nvar _Map2 = _interopRequireDefault(_Map);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Removes all key-value entries from the map.\n *\n * @private\n * @name clear\n * @memberOf MapCache\n */\nfunction mapCacheClear() {\n  this.__data__ = {\n    'hash': new _Hash2.default(),\n    'map': new (_Map2.default || _ListCache2.default)(),\n    'string': new _Hash2.default()\n  };\n}\n\nexports.default = mapCacheClear;\n\n/***/ }),\n/* 466 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _getMapData = __webpack_require__(88);\n\nvar _getMapData2 = _interopRequireDefault(_getMapData);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Removes `key` and its value from the map.\n *\n * @private\n * @name delete\n * @memberOf MapCache\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\nfunction mapCacheDelete(key) {\n  return (0, _getMapData2.default)(this, key)['delete'](key);\n}\n\nexports.default = mapCacheDelete;\n\n/***/ }),\n/* 467 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _getMapData = __webpack_require__(88);\n\nvar _getMapData2 = _interopRequireDefault(_getMapData);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Gets the map value for `key`.\n *\n * @private\n * @name get\n * @memberOf MapCache\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\nfunction mapCacheGet(key) {\n  return (0, _getMapData2.default)(this, key).get(key);\n}\n\nexports.default = mapCacheGet;\n\n/***/ }),\n/* 468 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _getMapData = __webpack_require__(88);\n\nvar _getMapData2 = _interopRequireDefault(_getMapData);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Checks if a map value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf MapCache\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\nfunction mapCacheHas(key) {\n  return (0, _getMapData2.default)(this, key).has(key);\n}\n\nexports.default = mapCacheHas;\n\n/***/ }),\n/* 469 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _getMapData = __webpack_require__(88);\n\nvar _getMapData2 = _interopRequireDefault(_getMapData);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Sets the map `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf MapCache\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the map cache instance.\n */\nfunction mapCacheSet(key, value) {\n  (0, _getMapData2.default)(this, key).set(key, value);\n  return this;\n}\n\nexports.default = mapCacheSet;\n\n/***/ }),\n/* 470 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseGet = __webpack_require__(127);\n\nvar _baseGet2 = _interopRequireDefault(_baseGet);\n\nvar _baseSlice = __webpack_require__(34);\n\nvar _baseSlice2 = _interopRequireDefault(_baseSlice);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Gets the parent value at `path` of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array} path The path to get the parent value of.\n * @returns {*} Returns the parent value.\n */\nfunction parent(object, path) {\n  return path.length == 1 ? object : (0, _baseGet2.default)(object, (0, _baseSlice2.default)(path, 0, -1));\n}\n\nexports.default = parent;\n\n/***/ }),\n/* 471 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/** Used to stand-in for `undefined` hash values. */\nvar HASH_UNDEFINED = '__lodash_hash_undefined__';\n\n/**\n * Adds `value` to the array cache.\n *\n * @private\n * @name add\n * @memberOf SetCache\n * @alias push\n * @param {*} value The value to cache.\n * @returns {Object} Returns the cache instance.\n */\nfunction setCacheAdd(value) {\n  this.__data__.set(value, HASH_UNDEFINED);\n  return this;\n}\n\nexports.default = setCacheAdd;\n\n/***/ }),\n/* 472 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * Checks if `value` is in the array cache.\n *\n * @private\n * @name has\n * @memberOf SetCache\n * @param {*} value The value to search for.\n * @returns {number} Returns `true` if `value` is found, else `false`.\n */\nfunction setCacheHas(value) {\n  return this.__data__.has(value);\n}\n\nexports.default = setCacheHas;\n\n/***/ }),\n/* 473 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * Converts `set` to its value-value pairs.\n *\n * @private\n * @param {Object} set The set to convert.\n * @returns {Array} Returns the value-value pairs.\n */\nfunction setToPairs(set) {\n  var index = -1,\n      result = Array(set.size);\n\n  set.forEach(function (value) {\n    result[++index] = [value, value];\n  });\n  return result;\n}\n\nexports.default = setToPairs;\n\n/***/ }),\n/* 474 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _ListCache = __webpack_require__(80);\n\nvar _ListCache2 = _interopRequireDefault(_ListCache);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Removes all key-value entries from the stack.\n *\n * @private\n * @name clear\n * @memberOf Stack\n */\nfunction stackClear() {\n  this.__data__ = new _ListCache2.default();\n}\n\nexports.default = stackClear;\n\n/***/ }),\n/* 475 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * Removes `key` and its value from the stack.\n *\n * @private\n * @name delete\n * @memberOf Stack\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\nfunction stackDelete(key) {\n  return this.__data__['delete'](key);\n}\n\nexports.default = stackDelete;\n\n/***/ }),\n/* 476 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * Gets the stack value for `key`.\n *\n * @private\n * @name get\n * @memberOf Stack\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\nfunction stackGet(key) {\n  return this.__data__.get(key);\n}\n\nexports.default = stackGet;\n\n/***/ }),\n/* 477 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use 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enumerable: true,\n  get: function get() {\n    return _interopRequireDefault(_differenceBy).default;\n  }\n});\n\nvar _differenceWith = __webpack_require__(219);\n\nObject.defineProperty(exports, 'differenceWith', {\n  enumerable: true,\n  get: function get() {\n    return _interopRequireDefault(_differenceWith).default;\n  }\n});\n\nvar _drop = __webpack_require__(144);\n\nObject.defineProperty(exports, 'drop', {\n  enumerable: true,\n  get: function get() {\n    return _interopRequireDefault(_drop).default;\n  }\n});\n\nvar _dropRight = __webpack_require__(145);\n\nObject.defineProperty(exports, 'dropRight', {\n  enumerable: true,\n  get: function get() {\n    return _interopRequireDefault(_dropRight).default;\n  }\n});\n\nvar _dropRightWhile = __webpack_require__(220);\n\nObject.defineProperty(exports, 'dropRightWhile', {\n  enumerable: true,\n  get: function get() {\n    return _interopRequireDefault(_dropRightWhile).default;\n  }\n});\n\nvar _dropWhile = 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}\n});\n\nvar _flatten = __webpack_require__(226);\n\nObject.defineProperty(exports, 'flatten', {\n  enumerable: true,\n  get: function get() {\n    return _interopRequireDefault(_flatten).default;\n  }\n});\n\nvar _flattenDeep = __webpack_require__(227);\n\nObject.defineProperty(exports, 'flattenDeep', {\n  enumerable: true,\n  get: function get() {\n    return _interopRequireDefault(_flattenDeep).default;\n  }\n});\n\nvar _flattenDepth = __webpack_require__(228);\n\nObject.defineProperty(exports, 'flattenDepth', {\n  enumerable: true,\n  get: function get() {\n    return _interopRequireDefault(_flattenDepth).default;\n  }\n});\n\nvar _fromPairs = __webpack_require__(229);\n\nObject.defineProperty(exports, 'fromPairs', {\n  enumerable: true,\n  get: function get() {\n    return _interopRequireDefault(_fromPairs).default;\n  }\n});\n\nvar _head = __webpack_require__(146);\n\nObject.defineProperty(exports, 'head', {\n  enumerable: true,\n  get: function get() {\n    return 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enumerable: true,\n  get: function get() {\n    return _interopRequireDefault(_intersectionWith).default;\n  }\n});\n\nvar _join = __webpack_require__(238);\n\nObject.defineProperty(exports, 'join', {\n  enumerable: true,\n  get: function get() {\n    return _interopRequireDefault(_join).default;\n  }\n});\n\nvar _last = __webpack_require__(18);\n\nObject.defineProperty(exports, 'last', {\n  enumerable: true,\n  get: function get() {\n    return _interopRequireDefault(_last).default;\n  }\n});\n\nvar _lastIndexOf = __webpack_require__(239);\n\nObject.defineProperty(exports, 'lastIndexOf', {\n  enumerable: true,\n  get: function get() {\n    return _interopRequireDefault(_lastIndexOf).default;\n  }\n});\n\nvar _nth = __webpack_require__(240);\n\nObject.defineProperty(exports, 'nth', {\n  enumerable: true,\n  get: function get() {\n    return _interopRequireDefault(_nth).default;\n  }\n});\n\nvar _pull = __webpack_require__(241);\n\nObject.defineProperty(exports, 'pull', {\n  enumerable: 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objectProto.propertyIsEnumerable;\n\n/** Detect if properties shadowing those on `Object.prototype` are non-enumerable. */\nvar nonEnumShadows = !propertyIsEnumerable.call({ 'valueOf': 1 }, 'valueOf');\n\n/**\n * This method is like `_.assign` except that it iterates over own and\n * inherited source properties.\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @alias extend\n * @category Object\n * @param {Object} object The destination object.\n * @param {...Object} [sources] The source objects.\n * @returns {Object} Returns `object`.\n * @see _.assign\n * @example\n *\n * function Foo() {\n *   this.b = 2;\n * }\n *\n * function Bar() {\n *   this.d = 4;\n * }\n *\n * Foo.prototype.c = 3;\n * Bar.prototype.e = 5;\n *\n * _.assignIn({ 'a': 1 }, new Foo, new Bar);\n * // => { 'a': 1, 'b': 2, 'c': 3, 'd': 4, 'e': 5 }\n */\nvar assignIn = (0, _createAssigner2.default)(function (object, source) {\n  if (nonEnumShadows || (0, _isPrototype2.default)(source) || (0, _isArrayLike2.default)(source)) {\n    (0, _copyObject2.default)(source, (0, _keysIn2.default)(source), object);\n    return;\n  }\n  for (var key in source) {\n    (0, _assignValue2.default)(object, key, source[key]);\n  }\n});\n\nexports.default = assignIn;\n\n/***/ }),\n/* 483 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseClone = __webpack_require__(199);\n\nvar _baseClone2 = _interopRequireDefault(_baseClone);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * This method is like `_.cloneWith` except that it recursively clones `value`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to recursively clone.\n * @param {Function} [customizer] The function to customize cloning.\n * @returns {*} Returns the deep cloned value.\n * @see _.cloneWith\n * @example\n *\n * function customizer(value) {\n *   if (_.isElement(value)) {\n *     return value.cloneNode(true);\n *   }\n * }\n *\n * var el = _.cloneDeepWith(document.body, customizer);\n *\n * console.log(el === document.body);\n * // => false\n * console.log(el.nodeName);\n * // => 'BODY'\n * console.log(el.childNodes.length);\n * // => 20\n */\nfunction cloneDeepWith(value, customizer) {\n  return (0, _baseClone2.default)(value, true, true, customizer);\n}\n\nexports.default = cloneDeepWith;\n\n/***/ }),\n/* 484 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * Creates a function that returns `value`.\n *\n * @static\n * @memberOf _\n * @since 2.4.0\n * @category Util\n * @param {*} value The value to return from the new function.\n * @returns {Function} Returns the new constant function.\n * @example\n *\n * var object = { 'user': 'fred' };\n * var getter = _.constant(object);\n *\n * getter() === object;\n * // => true\n */\nfunction constant(value) {\n  return function () {\n    return value;\n  };\n}\n\nexports.default = constant;\n\n/***/ }),\n/* 485 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseHasIn = __webpack_require__(417);\n\nvar _baseHasIn2 = _interopRequireDefault(_baseHasIn);\n\nvar _hasPath = __webpack_require__(448);\n\nvar _hasPath2 = _interopRequireDefault(_hasPath);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Checks if `path` is a direct or inherited property of `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The object to query.\n * @param {Array|string} path The path to check.\n * @returns {boolean} Returns `true` if `path` exists, else `false`.\n * @example\n *\n * var object = _.create({ 'a': _.create({ 'b': 2 }) });\n *\n * _.hasIn(object, 'a');\n * // => true\n *\n * _.hasIn(object, 'a.b');\n * // => true\n *\n * _.hasIn(object, ['a', 'b']);\n * // => true\n *\n * _.hasIn(object, 'b');\n * // => false\n */\nfunction hasIn(object, path) {\n  return object != null && (0, _hasPath2.default)(object, path, _baseHasIn2.default);\n}\n\nexports.default = hasIn;\n\n/***/ }),\n/* 486 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n/* WEBPACK VAR INJECTION */(function(module) {\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; };\n\nvar _constant = __webpack_require__(484);\n\nvar _constant2 = _interopRequireDefault(_constant);\n\nvar _root = __webpack_require__(30);\n\nvar _root2 = _interopRequireDefault(_root);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** Used to determine if values are of the language type `Object`. */\nvar objectTypes = {\n  'function': true,\n  'object': true\n};\n\n/** Detect free variable `exports`. */\nvar freeExports = objectTypes[ false ? 'undefined' : _typeof(exports)] && exports && !exports.nodeType ? exports : undefined;\n\n/** Detect free variable `module`. */\nvar freeModule = objectTypes[ false ? 'undefined' : _typeof(module)] && module && !module.nodeType ? module : undefined;\n\n/** Detect the popular CommonJS extension `module.exports`. */\nvar moduleExports = freeModule && freeModule.exports === freeExports ? freeExports : undefined;\n\n/** Built-in value references. */\nvar Buffer = moduleExports ? _root2.default.Buffer : undefined;\n\n/**\n * Checks if `value` is a buffer.\n *\n * @static\n * @memberOf _\n * @since 4.3.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a buffer, else `false`.\n * @example\n *\n * _.isBuffer(new Buffer(2));\n * // => true\n *\n * _.isBuffer(new Uint8Array(2));\n * // => false\n */\nvar isBuffer = !Buffer ? (0, _constant2.default)(false) : function (value) {\n  return value instanceof Buffer;\n};\n\nexports.default = isBuffer;\n/* WEBPACK VAR INJECTION */}.call(exports, __webpack_require__(99)(module)))\n\n/***/ }),\n/* 487 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _isObjectLike = __webpack_require__(43);\n\nvar _isObjectLike2 = _interopRequireDefault(_isObjectLike);\n\nvar _isPlainObject = __webpack_require__(97);\n\nvar _isPlainObject2 = _interopRequireDefault(_isPlainObject);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Checks if `value` is likely a DOM element.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a DOM element,\n *  else `false`.\n * @example\n *\n * _.isElement(document.body);\n * // => true\n *\n * _.isElement('<body>');\n * // => false\n */\nfunction isElement(value) {\n  return !!value && value.nodeType === 1 && (0, _isObjectLike2.default)(value) && !(0, _isPlainObject2.default)(value);\n}\n\nexports.default = isElement;\n\n/***/ }),\n/* 488 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseIsEqual = __webpack_require__(130);\n\nvar _baseIsEqual2 = _interopRequireDefault(_baseIsEqual);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Performs a deep comparison between two values to determine if they are\n * equivalent.\n *\n * **Note:** This method supports comparing arrays, array buffers, booleans,\n * date objects, error objects, maps, numbers, `Object` objects, regexes,\n * sets, strings, symbols, and typed arrays. `Object` objects are compared\n * by their own, not inherited, enumerable properties. Functions and DOM\n * nodes are **not** supported.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if the values are equivalent,\n *  else `false`.\n * @example\n *\n * var object = { 'user': 'fred' };\n * var other = { 'user': 'fred' };\n *\n * _.isEqual(object, other);\n * // => true\n *\n * object === other;\n * // => false\n */\nfunction isEqual(value, other) {\n  return (0, _baseIsEqual2.default)(value, other);\n}\n\nexports.default = isEqual;\n\n/***/ }),\n/* 489 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n    value: true\n});\n\nvar _isLength = __webpack_require__(96);\n\nvar _isLength2 = _interopRequireDefault(_isLength);\n\nvar _isObjectLike = __webpack_require__(43);\n\nvar _isObjectLike2 = _interopRequireDefault(_isObjectLike);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** `Object#toString` result references. */\nvar argsTag = '[object Arguments]',\n    arrayTag = '[object Array]',\n    boolTag = '[object Boolean]',\n    dateTag = '[object Date]',\n    errorTag = '[object Error]',\n    funcTag = '[object Function]',\n    mapTag = '[object Map]',\n    numberTag = '[object Number]',\n    objectTag = '[object Object]',\n    regexpTag = '[object RegExp]',\n    setTag = '[object Set]',\n    stringTag = '[object String]',\n    weakMapTag = '[object WeakMap]';\n\nvar arrayBufferTag = '[object ArrayBuffer]',\n    dataViewTag = '[object DataView]',\n    float32Tag = '[object Float32Array]',\n    float64Tag = '[object Float64Array]',\n    int8Tag = '[object Int8Array]',\n    int16Tag = '[object Int16Array]',\n    int32Tag = '[object Int32Array]',\n    uint8Tag = '[object Uint8Array]',\n    uint8ClampedTag = '[object Uint8ClampedArray]',\n    uint16Tag = '[object Uint16Array]',\n    uint32Tag = '[object Uint32Array]';\n\n/** Used to identify `toStringTag` values of typed arrays. */\nvar typedArrayTags = {};\ntypedArrayTags[float32Tag] = typedArrayTags[float64Tag] = typedArrayTags[int8Tag] = typedArrayTags[int16Tag] = typedArrayTags[int32Tag] = typedArrayTags[uint8Tag] = typedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] = typedArrayTags[uint32Tag] = true;\ntypedArrayTags[argsTag] = typedArrayTags[arrayTag] = typedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] = typedArrayTags[dataViewTag] = typedArrayTags[dateTag] = typedArrayTags[errorTag] = typedArrayTags[funcTag] = typedArrayTags[mapTag] = typedArrayTags[numberTag] = typedArrayTags[objectTag] = typedArrayTags[regexpTag] = typedArrayTags[setTag] = typedArrayTags[stringTag] = typedArrayTags[weakMapTag] = false;\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/**\n * Used to resolve the\n * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)\n * of values.\n */\nvar objectToString = objectProto.toString;\n\n/**\n * Checks if `value` is classified as a typed array.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is correctly classified,\n *  else `false`.\n * @example\n *\n * _.isTypedArray(new Uint8Array);\n * // => true\n *\n * _.isTypedArray([]);\n * // => false\n */\nfunction isTypedArray(value) {\n    return (0, _isObjectLike2.default)(value) && (0, _isLength2.default)(value.length) && !!typedArrayTags[objectToString.call(value)];\n}\n\nexports.default = isTypedArray;\n\n/***/ }),\n/* 490 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseKeysIn = __webpack_require__(422);\n\nvar _baseKeysIn2 = _interopRequireDefault(_baseKeysIn);\n\nvar _indexKeys = __webpack_require__(209);\n\nvar _indexKeys2 = _interopRequireDefault(_indexKeys);\n\nvar _isIndex = __webpack_require__(35);\n\nvar _isIndex2 = _interopRequireDefault(_isIndex);\n\nvar _isPrototype = __webpack_require__(91);\n\nvar _isPrototype2 = _interopRequireDefault(_isPrototype);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/**\n * Creates an array of the own and inherited enumerable property names of `object`.\n *\n * **Note:** Non-object values are coerced to objects.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n * @example\n *\n * function Foo() {\n *   this.a = 1;\n *   this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.keysIn(new Foo);\n * // => ['a', 'b', 'c'] (iteration order is not guaranteed)\n */\nfunction keysIn(object) {\n  var index = -1,\n      isProto = (0, _isPrototype2.default)(object),\n      props = (0, _baseKeysIn2.default)(object),\n      propsLength = props.length,\n      indexes = (0, _indexKeys2.default)(object),\n      skipIndexes = !!indexes,\n      result = indexes || [],\n      length = result.length;\n\n  while (++index < propsLength) {\n    var key = props[index];\n    if (!(skipIndexes && (key == 'length' || (0, _isIndex2.default)(key, length))) && !(key == 'constructor' && (isProto || !hasOwnProperty.call(object, key)))) {\n      result.push(key);\n    }\n  }\n  return result;\n}\n\nexports.default = keysIn;\n\n/***/ }),\n/* 491 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _MapCache = __webpack_require__(122);\n\nvar _MapCache2 = _interopRequireDefault(_MapCache);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** Used as the `TypeError` message for \"Functions\" methods. */\nvar FUNC_ERROR_TEXT = 'Expected a function';\n\n/**\n * Creates a function that memoizes the result of `func`. If `resolver` is\n * provided, it determines the cache key for storing the result based on the\n * arguments provided to the memoized function. By default, the first argument\n * provided to the memoized function is used as the map cache key. The `func`\n * is invoked with the `this` binding of the memoized function.\n *\n * **Note:** The cache is exposed as the `cache` property on the memoized\n * function. Its creation may be customized by replacing the `_.memoize.Cache`\n * constructor with one whose instances implement the\n * [`Map`](http://ecma-international.org/ecma-262/6.0/#sec-properties-of-the-map-prototype-object)\n * method interface of `delete`, `get`, `has`, and `set`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to have its output memoized.\n * @param {Function} [resolver] The function to resolve the cache key.\n * @returns {Function} Returns the new memoized function.\n * @example\n *\n * var object = { 'a': 1, 'b': 2 };\n * var other = { 'c': 3, 'd': 4 };\n *\n * var values = _.memoize(_.values);\n * values(object);\n * // => [1, 2]\n *\n * values(other);\n * // => [3, 4]\n *\n * object.a = 2;\n * values(object);\n * // => [1, 2]\n *\n * // Modify the result cache.\n * values.cache.set(object, ['a', 'b']);\n * values(object);\n * // => ['a', 'b']\n *\n * // Replace `_.memoize.Cache`.\n * _.memoize.Cache = WeakMap;\n */\nfunction memoize(func, resolver) {\n  if (typeof func != 'function' || resolver && typeof resolver != 'function') {\n    throw new TypeError(FUNC_ERROR_TEXT);\n  }\n  var memoized = function memoized() {\n    var args = arguments,\n        key = resolver ? resolver.apply(this, args) : args[0],\n        cache = memoized.cache;\n\n    if (cache.has(key)) {\n      return cache.get(key);\n    }\n    var result = func.apply(this, args);\n    memoized.cache = cache.set(key, result);\n    return result;\n  };\n  memoized.cache = new (memoize.Cache || _MapCache2.default)();\n  return memoized;\n}\n\n// Assign cache to `_.memoize`.\nmemoize.Cache = _MapCache2.default;\n\nexports.default = memoize;\n\n/***/ }),\n/* 492 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * A no-operation function that returns `undefined` regardless of the\n * arguments it receives.\n *\n * @static\n * @memberOf _\n * @since 2.3.0\n * @category Util\n * @example\n *\n * var object = { 'user': 'fred' };\n *\n * _.noop(object) === undefined;\n * // => true\n */\nfunction noop() {\n  // No operation performed.\n}\n\nexports.default = noop;\n\n/***/ }),\n/* 493 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * Gets the timestamp of the number of milliseconds that have elapsed since\n * the Unix epoch (1 January 1970 00:00:00 UTC).\n *\n * @static\n * @memberOf _\n * @since 2.4.0\n * @type {Function}\n * @category Date\n * @returns {number} Returns the timestamp.\n * @example\n *\n * _.defer(function(stamp) {\n *   console.log(_.now() - stamp);\n * }, _.now());\n * // => Logs the number of milliseconds it took for the deferred function to be invoked.\n */\nvar now = Date.now;\n\nexports.default = now;\n\n/***/ }),\n/* 494 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseProperty = __webpack_require__(131);\n\nvar _baseProperty2 = _interopRequireDefault(_baseProperty);\n\nvar _basePropertyDeep = __webpack_require__(426);\n\nvar _basePropertyDeep2 = _interopRequireDefault(_basePropertyDeep);\n\nvar _isKey = __webpack_require__(50);\n\nvar _isKey2 = _interopRequireDefault(_isKey);\n\nvar _toKey = __webpack_require__(51);\n\nvar _toKey2 = _interopRequireDefault(_toKey);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Creates a function that returns the value at `path` of a given object.\n *\n * @static\n * @memberOf _\n * @since 2.4.0\n * @category Util\n * @param {Array|string} path The path of the property to get.\n * @returns {Function} Returns the new accessor function.\n * @example\n *\n * var objects = [\n *   { 'a': { 'b': 2 } },\n *   { 'a': { 'b': 1 } }\n * ];\n *\n * _.map(objects, _.property('a.b'));\n * // => [2, 1]\n *\n * _.map(_.sortBy(objects, _.property(['a', 'b'])), 'a.b');\n * // => [1, 2]\n */\nfunction property(path) {\n  return (0, _isKey2.default)(path) ? (0, _baseProperty2.default)((0, _toKey2.default)(path)) : (0, _basePropertyDeep2.default)(path);\n}\n\nexports.default = property;\n\n/***/ }),\n/* 495 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _debounce = __webpack_require__(143);\n\nvar _debounce2 = _interopRequireDefault(_debounce);\n\nvar _isObject = __webpack_require__(13);\n\nvar _isObject2 = _interopRequireDefault(_isObject);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** Used as the `TypeError` message for \"Functions\" methods. */\nvar FUNC_ERROR_TEXT = 'Expected a function';\n\n/**\n * Creates a throttled function that only invokes `func` at most once per\n * every `wait` milliseconds. The throttled function comes with a `cancel`\n * method to cancel delayed `func` invocations and a `flush` method to\n * immediately invoke them. Provide an options object to indicate whether\n * `func` should be invoked on the leading and/or trailing edge of the `wait`\n * timeout. The `func` is invoked with the last arguments provided to the\n * throttled function. Subsequent calls to the throttled function return the\n * result of the last `func` invocation.\n *\n * **Note:** If `leading` and `trailing` options are `true`, `func` is\n * invoked on the trailing edge of the timeout only if the throttled function\n * is invoked more than once during the `wait` timeout.\n *\n * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)\n * for details over the differences between `_.throttle` and `_.debounce`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to throttle.\n * @param {number} [wait=0] The number of milliseconds to throttle invocations to.\n * @param {Object} [options={}] The options object.\n * @param {boolean} [options.leading=true]\n *  Specify invoking on the leading edge of the timeout.\n * @param {boolean} [options.trailing=true]\n *  Specify invoking on the trailing edge of the timeout.\n * @returns {Function} Returns the new throttled function.\n * @example\n *\n * // Avoid excessively updating the position while scrolling.\n * jQuery(window).on('scroll', _.throttle(updatePosition, 100));\n *\n * // Invoke `renewToken` when the click event is fired, but not more than once every 5 minutes.\n * var throttled = _.throttle(renewToken, 300000, { 'trailing': false });\n * jQuery(element).on('click', throttled);\n *\n * // Cancel the trailing throttled invocation.\n * jQuery(window).on('popstate', throttled.cancel);\n */\nfunction throttle(func, wait, options) {\n  var leading = true,\n      trailing = true;\n\n  if (typeof func != 'function') {\n    throw new TypeError(FUNC_ERROR_TEXT);\n  }\n  if ((0, _isObject2.default)(options)) {\n    leading = 'leading' in options ? !!options.leading : leading;\n    trailing = 'trailing' in options ? !!options.trailing : trailing;\n  }\n  return (0, _debounce2.default)(func, wait, {\n    'leading': leading,\n    'maxWait': wait,\n    'trailing': trailing\n  });\n}\n\nexports.default = throttle;\n\n/***/ }),\n/* 496 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _toNumber = __webpack_require__(261);\n\nvar _toNumber2 = _interopRequireDefault(_toNumber);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** Used as references for various `Number` constants. */\nvar INFINITY = 1 / 0,\n    MAX_INTEGER = 1.7976931348623157e+308;\n\n/**\n * Converts `value` to a finite number.\n *\n * @static\n * @memberOf _\n * @since 4.12.0\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {number} Returns the converted number.\n * @example\n *\n * _.toFinite(3.2);\n * // => 3.2\n *\n * _.toFinite(Number.MIN_VALUE);\n * // => 5e-324\n *\n * _.toFinite(Infinity);\n * // => 1.7976931348623157e+308\n *\n * _.toFinite('3.2');\n * // => 3.2\n */\nfunction toFinite(value) {\n  if (!value) {\n    return value === 0 ? value : 0;\n  }\n  value = (0, _toNumber2.default)(value);\n  if (value === INFINITY || value === -INFINITY) {\n    var sign = value < 0 ? -1 : 1;\n    return sign * MAX_INTEGER;\n  }\n  return value === value ? value : 0;\n}\n\nexports.default = toFinite;\n\n/***/ }),\n/* 497 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseClamp = __webpack_require__(413);\n\nvar _baseClamp2 = _interopRequireDefault(_baseClamp);\n\nvar _toInteger = __webpack_require__(14);\n\nvar _toInteger2 = _interopRequireDefault(_toInteger);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/** Used as references for the maximum length and index of an array. */\nvar MAX_ARRAY_LENGTH = 4294967295;\n\n/**\n * Converts `value` to an integer suitable for use as the length of an\n * array-like object.\n *\n * **Note:** This method is based on\n * [`ToLength`](http://ecma-international.org/ecma-262/6.0/#sec-tolength).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {number} Returns the converted integer.\n * @example\n *\n * _.toLength(3.2);\n * // => 3\n *\n * _.toLength(Number.MIN_VALUE);\n * // => 0\n *\n * _.toLength(Infinity);\n * // => 4294967295\n *\n * _.toLength('3.2');\n * // => 3\n */\nfunction toLength(value) {\n  return value ? (0, _baseClamp2.default)((0, _toInteger2.default)(value), 0, MAX_ARRAY_LENGTH) : 0;\n}\n\nexports.default = toLength;\n\n/***/ }),\n/* 498 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _createToPairs = __webpack_require__(442);\n\nvar _createToPairs2 = _interopRequireDefault(_createToPairs);\n\nvar _keys = __webpack_require__(64);\n\nvar _keys2 = _interopRequireDefault(_keys);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Creates an array of own enumerable string keyed-value pairs for `object`\n * which can be consumed by `_.fromPairs`. If `object` is a map or set, its\n * entries are returned.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @alias entries\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the key-value pairs.\n * @example\n *\n * function Foo() {\n *   this.a = 1;\n *   this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.toPairs(new Foo);\n * // => [['a', 1], ['b', 2]] (iteration order is not guaranteed)\n */\nvar toPairs = (0, _createToPairs2.default)(_keys2.default);\n\nexports.default = toPairs;\n\n/***/ }),\n/* 499 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n\nvar _baseToString = __webpack_require__(429);\n\nvar _baseToString2 = _interopRequireDefault(_baseToString);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Converts `value` to a string. An empty string is returned for `null`\n * and `undefined` values. The sign of `-0` is preserved.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to process.\n * @returns {string} Returns the string.\n * @example\n *\n * _.toString(null);\n * // => ''\n *\n * _.toString(-0);\n * // => '-0'\n *\n * _.toString([1, 2, 3]);\n * // => '1,2,3'\n */\nfunction toString(value) {\n  return value == null ? '' : (0, _baseToString2.default)(value);\n}\n\nexports.default = toString;\n\n/***/ }),\n/* 500 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * For licensing, see LICENSE.md.\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */\n\n/**\n * @module utils/locale\n */\n\nvar _translationService = __webpack_require__(504);\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * Represents the localization services.\n */\nvar Locale = function () {\n\t/**\n  * Creates a new instance of the Locale class.\n  *\n  * @param {String} [lang='en'] The language code in [ISO 639-1](https://en.wikipedia.org/wiki/ISO_639-1) format.\n  */\n\tfunction Locale(lang) {\n\t\tvar _this = this;\n\n\t\t_classCallCheck(this, Locale);\n\n\t\t/**\n   * The language code in [ISO 639-1](https://en.wikipedia.org/wiki/ISO_639-1) format.\n   *\n   * @readonly\n   * @member {String}\n   */\n\t\tthis.lang = lang || 'en';\n\n\t\t/**\n   * Translates the given string to the {@link #lang}. This method is also availble in {@link module:core/editor/editor~Editor#t} and\n   * {@link module:ui/view~View#t}.\n   *\n   * The strings may contain placeholders (`%<index>`) for values which are passed as the second argument.\n   * `<index>` is the index in the `values` array.\n   *\n   *\t\teditor.t( 'Created file \"%0\" in %1ms.', [ fileName, timeTaken ] );\n   *\n   * This method's context is statically bound to Locale instance,\n   * so it can be called as a function:\n   *\n   *\t\tconst t = this.t;\n   *\t\tt( 'Label' );\n   *\n   * @method #t\n   * @param {String} str The string to translate.\n   * @param {String[]} values Values that should be used to interpolate the string.\n   */\n\t\tthis.t = function () {\n\t\t\treturn _this._t.apply(_this, arguments);\n\t\t};\n\t}\n\n\t/**\n  * Base for the {@link #t} method.\n  *\n  * @private\n  */\n\n\n\t_createClass(Locale, [{\n\t\tkey: '_t',\n\t\tvalue: function _t(str, values) {\n\t\t\tvar translatedString = (0, _translationService.translate)(this.lang, str);\n\n\t\t\tif (values) {\n\t\t\t\ttranslatedString = translatedString.replace(/\\%(\\d+)/g, function (match, index) {\n\t\t\t\t\treturn index < values.length ? values[index] : match;\n\t\t\t\t});\n\t\t\t}\n\n\t\t\treturn translatedString;\n\t\t}\n\t}]);\n\n\treturn Locale;\n}();\n\nexports.default = Locale;\n\n/***/ }),\n/* 501 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\nexports.default = mapsEqual;\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/mapsequal\n */\n\n/**\n * Checks whether given {Map}s are equal, that is has same size and same key-value pairs.\n *\n * @returns {Boolean} `true` if given maps are equal, `false` otherwise.\n */\nfunction mapsEqual(mapA, mapB) {\n\tif (mapA.size != mapB.size) {\n\t\treturn false;\n\t}\n\n\tvar _iteratorNormalCompletion = true;\n\tvar _didIteratorError = false;\n\tvar _iteratorError = undefined;\n\n\ttry {\n\t\tfor (var _iterator = mapA.entries()[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n\t\t\tvar attr = _step.value;\n\n\t\t\tvar valA = JSON.stringify(attr[1]);\n\t\t\tvar valB = JSON.stringify(mapB.get(attr[0]));\n\n\t\t\tif (valA !== valB) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t}\n\t} catch (err) {\n\t\t_didIteratorError = true;\n\t\t_iteratorError = err;\n\t} finally {\n\t\ttry {\n\t\t\tif (!_iteratorNormalCompletion && _iterator.return) {\n\t\t\t\t_iterator.return();\n\t\t\t}\n\t\t} finally {\n\t\t\tif (_didIteratorError) {\n\t\t\t\tthrow _iteratorError;\n\t\t\t}\n\t\t}\n\t}\n\n\treturn true;\n}\n\n/***/ }),\n/* 502 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/priorities\n */\n\n/**\n * String representing a priority value.\n *\n * @typedef {'highest'|'high'|'normal'|'low'|'lowest'} module:utils/priorities~PriorityString\n */\n\n/**\n * Provides group of constants to use instead of hardcoding numeric priority values.\n *\n * @namespace\n */\nvar priorities = {\n\t/**\n  * Converts a string with priority name to it's numeric value. If `Number` is given, it just returns it.\n  *\n  * @static\n  * @param {module:utils/priorities~PriorityString|Number} priority Priority to convert.\n  * @returns {Number} Converted priority.\n  */\n\tget: function get(priority) {\n\t\tif (typeof priority != 'number') {\n\t\t\treturn this[priority] || this.normal;\n\t\t} else {\n\t\t\treturn priority;\n\t\t}\n\t},\n\n\n\thighest: 100000,\n\thigh: 1000,\n\tnormal: 0,\n\tlow: -1000,\n\tlowest: -100000\n};\n\nexports.default = priorities;\n\n/***/ }),\n/* 503 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\n/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/spy\n */\n\n/**\n * Creates a spy function (ala Sinon.js) that can be used to inspect call to it.\n *\n * The following are the present features:\n *\n * * spy.called: property set to `true` if the function has been called at least once.\n *\n * @returns {Function} The spy function.\n */\nfunction spy() {\n  return function spy() {\n    spy.called = true;\n  };\n}\n\nexports.default = spy;\n\n/***/ }),\n/* 504 */\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.add = add;\nexports.translate = translate;\nexports._clear = _clear;\n/**\n * @license Copyright (c) 2003-2016, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/translation-service\n */\n\nvar dictionaries = {};\n\n/**\n * Adds package translations to existing ones.\n * These translations will later be available for {@link module:utils/translations-service~translate translate}.\n *\n *\t\tadd( 'pl', {\n *\t\t\t'OK': 'OK',\n *\t\t\t'Cancel [context: reject]': 'Anuluj'\n *\t\t} );\n *\n * @param {String} lang Target language.\n * @param {Object.<String, String>} translations Translations which will be added to the dictionary.\n */\nfunction add(lang, translations) {\n  dictionaries[lang] = dictionaries[lang] || {};\n\n  Object.assign(dictionaries[lang], translations);\n}\n\n/**\n * Translates string if the translation of the string was previously {@link module:utils/translations-service~add added}\n * to the dictionary. This happens in a multi-language mode were translation modules are created by the bundler.\n *\n * When no translation is defined in the dictionary or the dictionary doesn't exist this function returns\n * the original string without the `'[context: ]'` (happens in development and single-language modes).\n *\n * In a single-language mode (when values passed to `t()` were replaced with target languange strings) the dictionary\n * is left empty, so this function will return the original strings always.\n *\n *\t\ttranslate( 'pl', 'Cancel [context: reject]' );\n *\n * @param {String} lang Target language.\n * @param {String} translationKey String which is going to be translated.\n * @returns {String} Translated sentence.\n */\nfunction translate(lang, translationKey) {\n  if (!hasTranslation(lang, translationKey)) {\n    return translationKey.replace(/ \\[context: [^\\]]+\\]$/, '');\n  }\n\n  return dictionaries[lang][translationKey];\n}\n\n// Checks whether the dictionary exists and translaiton in that dictionary exists.\nfunction hasTranslation(lang, translationKey) {\n  return lang in dictionaries && translationKey in dictionaries[lang];\n}\n\n/**\n * Clears dictionaries for test purposes.\n *\n * @protected\n */\nfunction _clear() {\n  dictionaries = {};\n}\n\n/***/ }),\n/* 505 */\n/***/ (function(module, exports, __webpack_require__) {\n\nexports = module.exports = __webpack_require__(55)();\n// imports\n\n\n// module\nexports.push([module.i, \".ck-reset,.ck-reset_all,.ck-reset_all *,.ck-reset_all a,.ck-reset_all textarea{box-sizing:border-box;width:auto;height:auto;position:static}svg.ck-icon{min-width:20px;min-height:20px;font-size:1em;vertical-align:middle}svg.ck-icon,svg.ck-icon *{color:inherit;cursor:inherit}svg.ck-icon *{fill:currentColor}[data-ck-tooltip]:after,[data-ck-tooltip]:before{visibility:hidden;opacity:0;display:none;position:absolute;z-index:999;pointer-events:none;-webkit-backface-visibility:hidden}[data-ck-tooltip]:after{content:attr(data-ck-tooltip)}[data-ck-tooltip]:before{content:\\\"\\\";width:0;height:0}.ck-button,a.ck-button{display:inline-block;position:relative;-moz-user-select:none;-webkit-user-select:none;-ms-user-select:none}.ck-button:after,.ck-button:before,a.ck-button:after,a.ck-button:before{display:block}.ck-button:hover:after,.ck-button:hover:before,a.ck-button:hover:after,a.ck-button:hover:before{visibility:visible;opacity:1}.ck-button .ck-button__label,.ck-button:focus:not(:hover):after,.ck-button:focus:not(:hover):before,a.ck-button 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.ck-toolbar.ck-toolbar_sticky{position:fixed;top:0}.ck-editor .ck-toolbar.ck-toolbar_sticky.ck-toolbar_sticky_bottom-limit{top:auto;position:absolute}.ck-hidden{display:none}.ck-disabled{opacity:.5}.ck-reset,.ck-reset_all,.ck-reset_all *,.ck-reset_all a,.ck-reset_all textarea{margin:0;padding:0;border:0;background:transparent;text-decoration:none;vertical-align:middle;transition:none}.ck-reset_all,.ck-reset_all *,.ck-reset_all a,.ck-reset_all textarea{border-collapse:collapse;font:normal normal normal 12px Helvetica,Arial,Tahoma,Verdana,Sans-Serif;color:#333;text-align:left;white-space:nowrap;cursor:auto;float:none}.ck-reset_all .ck-rtl *{text-align:right}.ck-reset_all iframe{vertical-align:inherit}.ck-reset_all textarea{white-space:pre-wrap}.ck-reset_all input[type=password],.ck-reset_all input[type=text],.ck-reset_all textarea{cursor:text}.ck-reset_all input[type=password][disabled],.ck-reset_all input[type=text][disabled],.ck-reset_all textarea[disabled]{cursor:default}.ck-reset_all fieldset{padding:10px;border:2px groove #e0dfe3}.ck-reset_all button::-moz-focus-inner{padding:0;border:0}svg.ck-icon{width:1.66667em;height:1.66667em}[data-ck-tooltip]:after,[data-ck-tooltip]:before{left:50%;transition:opacity .2s ease-in-out .2s}[data-ck-tooltip]:after{border-radius:2px;color:#fff;font-size:.7rem;background:#333;padding:.4em .64em}[data-ck-tooltip]:before{border-style:solid}.ck-tooltip_s:after{bottom:-4px;transform:translate(-50%,100%)}.ck-tooltip_s:before{bottom:0;transform:translate(-50%,100%);border-color:transparent transparent #333;border-width:0 5px 5px}.ck-tooltip_n:after{top:-4px;transform:translate(-50%,-100%)}.ck-tooltip_n:before{top:0;transform:translate(-50%,-100%);border-color:#333 transparent transparent;border-width:5px 5px 0}.ck-button,a.ck-button{background:#fff;border:1px solid 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This means that position in element containing two text nodes\n * with data `foo` and `bar`, position between them has offset `3`, not `1`.\n * See {@link module:engine/model/position~Position#path} for more.\n *\n * Since position in a model is represented by a {@link module:engine/model/position~Position#root position root} and\n * {@link module:engine/model/position~Position#path position path} it is possible to create positions placed in non-existing elements.\n * This requirement is important for {@link module:engine/model/operation/transform~transform operational transformation}.\n *\n * Also, {@link module:engine/model/operation/operation~Operation operations}\n * kept in {@link module:engine/model/document~Document#history document history}\n * are storing positions (and ranges) which were correct when those operations were applied, but may not be correct\n * after document got changed.\n *\n * When changes are applied to model, it may also happen that {@link module:engine/model/position~Position#parent position parent}\n * will change even if position path has not changed. 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Path is described through offsets, not indexes.\n\t\t *\n\t\t * Position can be placed before, after or in a {@link module:engine/model/node~Node node} if that node has\n\t\t * {@link module:engine/model/node~Node#offsetSize} greater than `1`. Items in position path are\n\t\t * {@link module:engine/model/node~Node#startOffset starting offsets} of position ancestors, starting from direct root children,\n\t\t * down to the position offset in it's parent.\n\t\t *\n\t\t *\t\t ROOT\n\t\t *\t\t  |- P            before: [ 0 ]         after: [ 1 ]\n\t\t *\t\t  |- UL           before: [ 1 ]         after: [ 2 ]\n\t\t *\t\t     |- LI        before: [ 1, 0 ]      after: [ 1, 1 ]\n\t\t *\t\t     |  |- foo    before: [ 1, 0, 0 ]   after: [ 1, 0, 3 ]\n\t\t *\t\t     |- LI        before: [ 1, 1 ]      after: [ 1, 2 ]\n\t\t *\t\t        |- bar    before: [ 1, 1, 0 ]   after: [ 1, 1, 3 ]\n\t\t *\n\t\t * `foo` and `bar` are representing {@link module:engine/model/text~Text text nodes}. Since text nodes has offset size\n\t\t * greater than `1` you can place position offset between their start and end:\n\t\t *\n\t\t *\t\t ROOT\n\t\t *\t\t  |- P\n\t\t *\t\t  |- UL\n\t\t *\t\t     |- LI\n\t\t *\t\t     |  |- f^o|o  ^ has path: [ 1, 0, 1 ]   | has path: [ 1, 0, 2 ]\n\t\t *\t\t     |- LI\n\t\t *\t\t        |- b^a|r  ^ has path: [ 1, 1, 1 ]   | has path: [ 1, 1, 2 ]\n\t\t *\n\t\t * @member {Array.<Number>} module:engine/model/position~Position#path\n\t\t */\n\t\tthis.path = path;\n\t}\n\n\t/**\n\t * Offset at which this position is located in its {@link module:engine/model/position~Position#parent parent}. It is equal\n\t * to the last item in position {@link module:engine/model/position~Position#path path}.\n\t *\n\t * @type {Number}\n\t */\n\tget offset() {\n\t\treturn last( this.path );\n\t}\n\n\t/**\n\t * @param {Number} newOffset\n\t */\n\tset offset( newOffset ) {\n\t\tthis.path[ this.path.length - 1 ] = newOffset;\n\t}\n\n\t/**\n\t * Parent element of this position.\n\t *\n\t * Keep in mind that `parent` value is calculated when the property is accessed.\n\t * If {@link module:engine/model/position~Position#path position path}\n\t * leads to a non-existing element, `parent` property will throw error.\n\t *\n\t * Also it is a good idea to cache `parent` property if it is used frequently in an algorithm (i.e. in a long loop).\n\t *\n\t * @readonly\n\t * @type {module:engine/model/element~Element}\n\t */\n\tget parent() {\n\t\tlet parent = this.root;\n\n\t\tfor ( let i = 0; i < this.path.length - 1; i++ ) {\n\t\t\tparent = parent.getChild( parent.offsetToIndex( this.path[ i ] ) );\n\t\t}\n\n\t\treturn parent;\n\t}\n\n\t/**\n\t * Position {@link module:engine/model/position~Position#offset offset} converted to an index in position's parent node. It is\n\t * equal to the {@link module:engine/model/node~Node#index index} of a node after this position. If position is placed\n\t * in text node, position index is equal to the index of that text node.\n\t *\n\t * @readonly\n\t * @type {Number}\n\t */\n\tget index() {\n\t\treturn this.parent.offsetToIndex( this.offset );\n\t}\n\n\t/**\n\t * Returns {@link module:engine/model/text~Text text node} instance in which this position is placed or `null` if this\n\t * position is not in a text node.\n\t *\n\t * @readonly\n\t * @type {module:engine/model/text~Text|null}\n\t */\n\tget textNode() {\n\t\tlet node = this.parent.getChild( this.index );\n\n\t\treturn ( node instanceof Text && node.startOffset < this.offset ) ? node : null;\n\t}\n\n\t/**\n\t * Node directly after this position or `null` if this position is in text node.\n\t *\n\t * @readonly\n\t * @type {module:engine/model/node~Node|null}\n\t */\n\tget nodeAfter() {\n\t\treturn this.textNode === null ? this.parent.getChild( this.index ) : null;\n\t}\n\n\t/**\n\t * Node directly before this position or `null` if this position is in text node.\n\t *\n\t * @readonly\n\t * @type {Node}\n\t */\n\tget nodeBefore() {\n\t\treturn this.textNode === null ? this.parent.getChild( this.index - 1 ) : null;\n\t}\n\n\t/**\n\t * Is `true` if position is at the beginning of its {@link module:engine/model/position~Position#parent parent}, `false` otherwise.\n\t *\n\t * @readonly\n\t * @type {Boolean}\n\t */\n\tget isAtStart() {\n\t\treturn this.offset === 0;\n\t}\n\n\t/**\n\t * Is `true` if position is at the end of its {@link module:engine/model/position~Position#parent parent}, `false` otherwise.\n\t *\n\t * @readonly\n\t * @type {Boolean}\n\t */\n\tget isAtEnd() {\n\t\treturn this.offset == this.parent.maxOffset;\n\t}\n\n\t/**\n\t * Checks whether this position is before or after given position.\n\t *\n\t * @param {module:engine/model/position~Position} otherPosition Position to compare with.\n\t * @returns {module:engine/model/position~PositionRelation}\n\t */\n\tcompareWith( otherPosition ) {\n\t\tif ( this.root != otherPosition.root ) {\n\t\t\treturn 'different';\n\t\t}\n\n\t\tconst result = compareArrays( this.path, otherPosition.path );\n\n\t\tswitch ( result ) {\n\t\t\tcase 'same':\n\t\t\t\treturn 'same';\n\n\t\t\tcase 'prefix':\n\t\t\t\treturn 'before';\n\n\t\t\tcase 'extension':\n\t\t\t\treturn 'after';\n\n\t\t\tdefault:\n\t\t\t\tif ( this.path[ result ] < otherPosition.path[ result ] ) {\n\t\t\t\t\treturn 'before';\n\t\t\t\t} else {\n\t\t\t\t\treturn 'after';\n\t\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Gets the farthest position which matches the callback using\n\t * {@link module:engine/model/treewalker~TreeWalker TreeWalker}.\n\t *\n\t * For example:\n\t *\n\t * \t\tgetLastMatchingPosition( value => value.type == 'text' );\n\t * \t\t// <paragraph>[]foo</paragraph> -> <paragraph>foo[]</paragraph>\n\t *\n\t * \t\tgetLastMatchingPosition( value => value.type == 'text', { direction: 'backward' } );\n\t * \t\t// <paragraph>foo[]</paragraph> -> <paragraph>[]foo</paragraph>\n\t *\n\t * \t\tgetLastMatchingPosition( value => false );\n\t * \t\t// Do not move the position.\n\t *\n\t * @param {Function} skip Callback function. Gets {@link module:engine/model/treewalker~TreeWalkerValue} and should\n\t * return `true` if the value should be skipped or `false` if not.\n\t * @param {Object} options Object with configuration options. See {@link module:engine/model/treewalker~TreeWalker}.\n\t *\n\t * @returns {module:engine/model/position~Position} The position after the last item which matches the `skip` callback test.\n\t */\n\tgetLastMatchingPosition( skip, options = {} ) {\n\t\toptions.startPosition = this;\n\n\t\tconst treeWalker = new TreeWalker( options );\n\t\ttreeWalker.skip( skip );\n\n\t\treturn treeWalker.position;\n\t}\n\n\t/**\n\t * Returns a path to this position's parent. Parent path is equal to position {@link module:engine/model/position~Position#path path}\n\t * but without the last item.\n\t *\n\t * This method returns the parent path even if the parent does not exists.\n\t *\n\t * @returns {Array.<Number>} Path to the parent.\n\t */\n\tgetParentPath() {\n\t\treturn this.path.slice( 0, -1 );\n\t}\n\n\t/**\n\t * Returns ancestors array of this position, that is this position's parent and its ancestors.\n\t *\n\t * @returns {Array.<module:engine/model/item~Item>} Array with ancestors.\n\t */\n\tgetAncestors() {\n\t\tif ( this.parent.is( 'documentFragment' ) ) {\n\t\t\treturn [ this.parent ];\n\t\t} else {\n\t\t\treturn this.parent.getAncestors( { includeNode: true } );\n\t\t}\n\t}\n\n\t/**\n\t * Returns the slice of two position {@link #path paths} which is identical. The {@link #root roots}\n\t * of these two paths must be identical.\n\t *\n\t * @param {module:engine/model/position~Position} position The second position.\n\t * @returns {Array.<Number>} The common path.\n\t */\n\tgetCommonPath( position ) {\n\t\tif ( this.root != position.root ) {\n\t\t\treturn [];\n\t\t}\n\n\t\t// We find on which tree-level start and end have the lowest common ancestor\n\t\tlet cmp = compareArrays( this.path, position.path );\n\t\t// If comparison returned string it means that arrays are same.\n\t\tlet diffAt = ( typeof cmp == 'string' ) ? Math.min( this.path.length, position.path.length ) : cmp;\n\n\t\treturn this.path.slice( 0, diffAt );\n\t}\n\n\t/**\n\t * Returns a new instance of `Position`, that has same {@link #parent parent} but it's offset\n\t * is shifted by `shift` value (can be a negative value).\n\t *\n\t * @param {Number} shift Offset shift. Can be a negative value.\n\t * @returns {module:engine/model/position~Position} Shifted position.\n\t */\n\tgetShiftedBy( shift ) {\n\t\tlet shifted = Position.createFromPosition( this );\n\n\t\tlet offset = shifted.offset + shift;\n\t\tshifted.offset = offset < 0 ? 0 : offset;\n\n\t\treturn shifted;\n\t}\n\n\t/**\n\t * Checks whether this position is after given position.\n\t *\n\t * @see module:engine/model/position~Position#isBefore\n\t *\n\t * @param {module:engine/model/position~Position} otherPosition Position to compare with.\n\t * @returns {Boolean} True if this position is after given position.\n\t */\n\tisAfter( otherPosition ) {\n\t\treturn this.compareWith( otherPosition ) == 'after';\n\t}\n\n\t/**\n\t * Checks whether this position is before given position.\n\t *\n\t * **Note:** watch out when using negation of the value returned by this method, because the negation will also\n\t * be `true` if positions are in different roots and you might not expect this. You should probably use\n\t * `a.isAfter( b ) || a.isEqual( b )` or `!a.isBefore( p ) && a.root == b.root` in most scenarios. If your\n\t * condition uses multiple `isAfter` and `isBefore` checks, build them so they do not use negated values, i.e.:\n\t *\n\t *\t\tif ( a.isBefore( b ) && c.isAfter( d ) ) {\n\t *\t\t\t// do A.\n\t *\t\t} else {\n\t *\t\t\t// do B.\n\t *\t\t}\n\t *\n\t * or, if you have only one if-branch:\n\t *\n\t *\t\tif ( !( a.isBefore( b ) && c.isAfter( d ) ) {\n\t *\t\t\t// do B.\n\t *\t\t}\n\t *\n\t * rather than:\n\t *\n\t *\t\tif ( !a.isBefore( b ) || && !c.isAfter( d ) ) {\n\t *\t\t\t// do B.\n\t *\t\t} else {\n\t *\t\t\t// do A.\n\t *\t\t}\n\t *\n\t * @param {module:engine/model/position~Position} otherPosition Position to compare with.\n\t * @returns {Boolean} True if this position is before given position.\n\t */\n\tisBefore( otherPosition ) {\n\t\treturn this.compareWith( otherPosition ) == 'before';\n\t}\n\n\t/**\n\t * Checks whether this position is equal to given position.\n\t *\n\t * @param {module:engine/model/position~Position} otherPosition Position to compare with.\n\t * @returns {Boolean} True if positions are same.\n\t */\n\tisEqual( otherPosition ) {\n\t\treturn this.compareWith( otherPosition ) == 'same';\n\t}\n\n\t/**\n\t * Checks whether this position is touching given position. Positions touch when there are no text nodes\n\t * or empty nodes in a range between them. Technically, those positions are not equal but in many cases\n\t * they are very similar or even indistinguishable.\n\t *\n\t * **Note:** this method traverses model document so it can be only used when range is up-to-date with model document.\n\t *\n\t * @param {module:engine/model/position~Position} otherPosition Position to compare with.\n\t * @returns {Boolean} True if positions touch.\n\t */\n\tisTouching( otherPosition ) {\n\t\tlet left = null;\n\t\tlet right = null;\n\t\tlet compare = this.compareWith( otherPosition );\n\n\t\tswitch ( compare ) {\n\t\t\tcase 'same':\n\t\t\t\treturn true;\n\n\t\t\tcase 'before':\n\t\t\t\tleft = Position.createFromPosition( this );\n\t\t\t\tright = Position.createFromPosition( otherPosition );\n\t\t\t\tbreak;\n\n\t\t\tcase 'after':\n\t\t\t\tleft = Position.createFromPosition( otherPosition );\n\t\t\t\tright = Position.createFromPosition( this );\n\t\t\t\tbreak;\n\n\t\t\tdefault:\n\t\t\t\treturn false;\n\t\t}\n\n\t\t// Cached for optimization purposes.\n\t\tlet leftParent = left.parent;\n\n\t\twhile ( left.path.length + right.path.length ) {\n\t\t\tif ( left.isEqual( right ) ) {\n\t\t\t\treturn true;\n\t\t\t}\n\n\t\t\tif ( left.path.length > right.path.length ) {\n\t\t\t\tif ( left.offset !== leftParent.maxOffset ) {\n\t\t\t\t\treturn false;\n\t\t\t\t}\n\n\t\t\t\tleft.path = left.path.slice( 0, -1 );\n\t\t\t\tleftParent = leftParent.parent;\n\t\t\t\tleft.offset++;\n\t\t\t} else {\n\t\t\t\tif ( right.offset !== 0 ) {\n\t\t\t\t\treturn false;\n\t\t\t\t}\n\n\t\t\t\tright.path = right.path.slice( 0, -1 );\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Returns a copy of this position that is updated by removing `howMany` nodes starting from `deletePosition`.\n\t * It may happen that this position is in a removed node. If that is the case, `null` is returned instead.\n\t *\n\t * @protected\n\t * @param {module:engine/model/position~Position} deletePosition Position before the first removed node.\n\t * @param {Number} howMany How many nodes are removed.\n\t * @returns {module:engine/model/position~Position|null} Transformed position or `null`.\n\t */\n\t_getTransformedByDeletion( deletePosition, howMany ) {\n\t\tlet transformed = Position.createFromPosition( this );\n\n\t\t// This position can't be affected if deletion was in a different root.\n\t\tif ( this.root != deletePosition.root ) {\n\t\t\treturn transformed;\n\t\t}\n\n\t\tif ( compareArrays( deletePosition.getParentPath(), this.getParentPath() ) == 'same' ) {\n\t\t\t// If nodes are removed from the node that is pointed by this position...\n\t\t\tif ( deletePosition.offset < this.offset ) {\n\t\t\t\t// And are removed from before an offset of that position...\n\t\t\t\tif ( deletePosition.offset + howMany > this.offset ) {\n\t\t\t\t\t// Position is in removed range, it's no longer in the tree.\n\t\t\t\t\treturn null;\n\t\t\t\t} else {\n\t\t\t\t\t// Decrement the offset accordingly.\n\t\t\t\t\ttransformed.offset -= howMany;\n\t\t\t\t}\n\t\t\t}\n\t\t} else if ( compareArrays( deletePosition.getParentPath(), this.getParentPath() ) == 'prefix' ) {\n\t\t\t// If nodes are removed from a node that is on a path to this position...\n\t\t\tconst i = deletePosition.path.length - 1;\n\n\t\t\tif ( deletePosition.offset <= this.path[ i ] ) {\n\t\t\t\t// And are removed from before next node of that path...\n\t\t\t\tif ( deletePosition.offset + howMany > this.path[ i ] ) {\n\t\t\t\t\t// If the next node of that path is removed return null\n\t\t\t\t\t// because the node containing this position got removed.\n\t\t\t\t\treturn null;\n\t\t\t\t} else {\n\t\t\t\t\t// Otherwise, decrement index on that path.\n\t\t\t\t\ttransformed.path[ i ] -= howMany;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn transformed;\n\t}\n\n\t/**\n\t * Returns a copy of this position that is updated by inserting `howMany` nodes at `insertPosition`.\n\t *\n\t * @protected\n\t * @param {module:engine/model/position~Position} insertPosition Position where nodes are inserted.\n\t * @param {Number} howMany How many nodes are inserted.\n\t * @param {Boolean} insertBefore Flag indicating whether nodes are inserted before or after `insertPosition`.\n\t * This is important only when `insertPosition` and this position are same. If that is the case and the flag is\n\t * set to `true`, this position will get transformed. If the flag is set to `false`, it won't.\n\t * @returns {module:engine/model/position~Position} Transformed position.\n\t */\n\t_getTransformedByInsertion( insertPosition, howMany, insertBefore ) {\n\t\tlet transformed = Position.createFromPosition( this );\n\n\t\t// This position can't be affected if insertion was in a different root.\n\t\tif ( this.root != insertPosition.root ) {\n\t\t\treturn transformed;\n\t\t}\n\n\t\tif ( compareArrays( insertPosition.getParentPath(), this.getParentPath() ) == 'same' ) {\n\t\t\t// If nodes are inserted in the node that is pointed by this position...\n\t\t\tif ( insertPosition.offset < this.offset || ( insertPosition.offset == this.offset && insertBefore ) ) {\n\t\t\t\t// And are inserted before an offset of that position...\n\t\t\t\t// \"Push\" this positions offset.\n\t\t\t\ttransformed.offset += howMany;\n\t\t\t}\n\t\t} else if ( compareArrays( insertPosition.getParentPath(), this.getParentPath() ) == 'prefix' ) {\n\t\t\t// If nodes are inserted in a node that is on a path to this position...\n\t\t\tconst i = insertPosition.path.length - 1;\n\n\t\t\tif ( insertPosition.offset <= this.path[ i ] ) {\n\t\t\t\t// And are inserted before next node of that path...\n\t\t\t\t// \"Push\" the index on that path.\n\t\t\t\ttransformed.path[ i ] += howMany;\n\t\t\t}\n\t\t}\n\n\t\treturn transformed;\n\t}\n\n\t/**\n\t * Returns a copy of this position that is updated by moving `howMany` nodes from `sourcePosition` to `targetPosition`.\n\t *\n\t * @protected\n\t * @param {module:engine/model/position~Position} sourcePosition Position before the first element to move.\n\t * @param {module:engine/model/position~Position} targetPosition Position where moved elements will be inserted.\n\t * @param {Number} howMany How many consecutive nodes to move, starting from `sourcePosition`.\n\t * @param {Boolean} insertBefore Flag indicating whether moved nodes are pasted before or after `insertPosition`.\n\t * This is important only when `targetPosition` and this position are same. If that is the case and the flag is\n\t * set to `true`, this position will get transformed by range insertion. If the flag is set to `false`, it won't.\n\t * @param {Boolean} [sticky] Flag indicating whether this position \"sticks\" to range, that is if it should be moved\n\t * with the moved range if it is equal to one of range's boundaries.\n\t * @returns {module:engine/model/position~Position} Transformed position.\n\t */\n\t_getTransformedByMove( sourcePosition, targetPosition, howMany, insertBefore, sticky ) {\n\t\t// Moving a range removes nodes from their original position. We acknowledge this by proper transformation.\n\t\tlet transformed = this._getTransformedByDeletion( sourcePosition, howMany );\n\n\t\t// Then we update target position, as it could be affected by nodes removal too.\n\t\ttargetPosition = targetPosition._getTransformedByDeletion( sourcePosition, howMany );\n\n\t\tif ( transformed === null || ( sticky && transformed.isEqual( sourcePosition ) ) ) {\n\t\t\t// This position is inside moved range (or sticks to it).\n\t\t\t// In this case, we calculate a combination of this position, move source position and target position.\n\t\t\ttransformed = this._getCombined( sourcePosition, targetPosition );\n\t\t} else {\n\t\t\t// This position is not inside a removed range.\n\t\t\t// In next step, we simply reflect inserting `howMany` nodes, which might further affect the position.\n\t\t\ttransformed = transformed._getTransformedByInsertion( targetPosition, howMany, insertBefore );\n\t\t}\n\n\t\treturn transformed;\n\t}\n\n\t/**\n\t * Returns a new position that is a combination of this position and given positions.\n\t *\n\t * The combined position is a copy of this position transformed by moving a range starting at `source` position\n\t * to the `target` position. It is expected that this position is inside the moved range.\n\t *\n\t * Example:\n\t *\n\t *\t\tlet original = new Position( root, [ 2, 3, 1 ] );\n\t *\t\tlet source = new Position( root, [ 2, 2 ] );\n\t *\t\tlet target = new Position( otherRoot, [ 1, 1, 3 ] );\n\t *\t\toriginal._getCombined( source, target ); // path is [ 1, 1, 4, 1 ], root is `otherRoot`\n\t *\n\t * Explanation:\n\t *\n\t * We have a position `[ 2, 3, 1 ]` and move some nodes from `[ 2, 2 ]` to `[ 1, 1, 3 ]`. The original position\n\t * was inside moved nodes and now should point to the new place. The moved nodes will be after\n\t * positions `[ 1, 1, 3 ]`, `[ 1, 1, 4 ]`, `[ 1, 1, 5 ]`. Since our position was in the second moved node,\n\t * the transformed position will be in a sub-tree of a node at `[ 1, 1, 4 ]`. Looking at original path, we\n\t * took care of `[ 2, 3 ]` part of it. Now we have to add the rest of the original path to the transformed path.\n\t * Finally, the transformed position will point to `[ 1, 1, 4, 1 ]`.\n\t *\n\t * @protected\n\t * @param {module:engine/model/position~Position} source Beginning of the moved range.\n\t * @param {module:engine/model/position~Position} target Position where the range is moved.\n\t * @returns {module:engine/model/position~Position} Combined position.\n\t */\n\t_getCombined( source, target ) {\n\t\tconst i = source.path.length - 1;\n\n\t\t// The first part of a path to combined position is a path to the place where nodes were moved.\n\t\tlet combined = Position.createFromPosition( target );\n\n\t\t// Then we have to update the rest of the path.\n\n\t\t// Fix the offset because this position might be after `from` position and we have to reflect that.\n\t\tcombined.offset = combined.offset + this.path[ i ] - source.offset;\n\n\t\t// Then, add the rest of the path.\n\t\t// If this position is at the same level as `from` position nothing will get added.\n\t\tcombined.path = combined.path.concat( this.path.slice( i + 1 ) );\n\n\t\treturn combined;\n\t}\n\n\t/**\n\t * Creates position at the given location. The location can be specified as:\n\t *\n\t * * a {@link module:engine/model/position~Position position},\n\t * * parent element and offset (offset defaults to `0`),\n\t * * parent element and `'end'` (sets position at the end of that element),\n\t * * {@link module:engine/model/item~Item model item} and `'before'` or `'after'` (sets position before or after given model item).\n\t *\n\t * This method is a shortcut to other constructors such as:\n\t *\n\t * * {@link module:engine/model/position~Position.createBefore},\n\t * * {@link module:engine/model/position~Position.createAfter},\n\t * * {@link module:engine/model/position~Position.createFromParentAndOffset},\n\t * * {@link module:engine/model/position~Position.createFromPosition}.\n\t *\n\t * @param {module:engine/model/item~Item|module:engine/model/position~Position} itemOrPosition\n\t * @param {Number|'end'|'before'|'after'} [offset=0] Offset or one of the flags. Used only when\n\t * first parameter is a {@link module:engine/model/item~Item model item}.\n\t */\n\tstatic createAt( itemOrPosition, offset ) {\n\t\tif ( itemOrPosition instanceof Position ) {\n\t\t\treturn this.createFromPosition( itemOrPosition );\n\t\t} else {\n\t\t\tconst node = itemOrPosition;\n\n\t\t\tif ( offset == 'end' ) {\n\t\t\t\toffset = node.maxOffset;\n\t\t\t} else if ( offset == 'before' ) {\n\t\t\t\treturn this.createBefore( node );\n\t\t\t} else if ( offset == 'after' ) {\n\t\t\t\treturn this.createAfter( node );\n\t\t\t} else if ( !offset ) {\n\t\t\t\toffset = 0;\n\t\t\t}\n\n\t\t\treturn this.createFromParentAndOffset( node, offset );\n\t\t}\n\t}\n\n\t/**\n\t * Creates a new position, after given {@link module:engine/model/item~Item model item}.\n\t *\n\t * @param {module:engine/model/item~Item} item Item after which the position should be placed.\n\t * @returns {module:engine/model/position~Position}\n\t */\n\tstatic createAfter( item ) {\n\t\tif ( !item.parent ) {\n\t\t\t/**\n\t\t\t * You can not make position after root.\n\t\t\t *\n\t\t\t * @error position-after-root\n\t\t\t * @param {module:engine/model/item~Item} root\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'model-position-after-root: You can not make position after root.', { root: item } );\n\t\t}\n\n\t\treturn this.createFromParentAndOffset( item.parent, item.endOffset );\n\t}\n\n\t/**\n\t * Creates a new position, before the given {@link module:engine/model/item~Item model item}.\n\t *\n\t * @param {module:engine/model/item~Item} item Item before which the position should be placed.\n\t * @returns {module:engine/model/position~Position}\n\t */\n\tstatic createBefore( item ) {\n\t\tif ( !item.parent ) {\n\t\t\t/**\n\t\t\t * You can not make position before root.\n\t\t\t *\n\t\t\t * @error position-before-root\n\t\t\t * @param {module:engine/model/item~Item} root\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'model-position-before-root: You can not make position before root.', { root: item } );\n\t\t}\n\n\t\treturn this.createFromParentAndOffset( item.parent, item.startOffset );\n\t}\n\n\t/**\n\t * Creates a new position from the parent element and an offset in that element.\n\t *\n\t * @param {module:engine/model/element~Element|module:engine/model/documentfragment~DocumentFragment} parent Position's parent.\n\t * @param {Number} offset Position's offset.\n\t * @returns {module:engine/model/position~Position}\n\t */\n\tstatic createFromParentAndOffset( parent, offset ) {\n\t\tif ( !parent.is( 'element' ) && !parent.is( 'documentFragment' ) ) {\n\t\t\t/**\n\t\t\t * Position parent have to be a model element or model document fragment.\n\t\t\t *\n\t\t\t * @error position-parent-incorrect\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'model-position-parent-incorrect: Position parent have to be a element or document fragment.' );\n\t\t}\n\n\t\tconst path = parent.getPath();\n\n\t\tpath.push( offset );\n\n\t\treturn new this( parent.root, path );\n\t}\n\n\t/**\n\t * Creates a new position, which is equal to passed position.\n\t *\n\t * @param {module:engine/model/position~Position} position Position to be cloned.\n\t * @returns {module:engine/model/position~Position}\n\t */\n\tstatic createFromPosition( position ) {\n\t\treturn new this( position.root, position.path.slice() );\n\t}\n\n\t/**\n\t * Creates a `Position` instance from given plain object (i.e. parsed JSON string).\n\t *\n\t * @param {Object} json Plain object to be converted to `Position`.\n\t * @returns {module:engine/model/position~Position} `Position` instance created using given plain object.\n\t */\n\tstatic fromJSON( json, doc ) {\n\t\tif ( json.root === '$graveyard' ) {\n\t\t\treturn new Position( doc.graveyard, json.path );\n\t\t}\n\n\t\tif ( !doc.hasRoot( json.root ) ) {\n\t\t\t/**\n\t\t\t * Cannot create position for document. Root with specified name does not exist.\n\t\t\t *\n\t\t\t * @error position-fromjson-no-root\n\t\t\t * @param {String} rootName\n\t\t\t */\n\t\t\tthrow new CKEditorError(\n\t\t\t\t'model-position-fromjson-no-root: Cannot create position for document. Root with specified name does not exist.',\n\t\t\t\t{ rootName: json.root }\n\t\t\t);\n\t\t}\n\n\t\treturn new Position( doc.getRoot( json.root ), json.path );\n\t}\n}\n\n/**\n * A flag indicating whether this position is `'before'` or `'after'` or `'same'` as given position.\n * If positions are in different roots `'different'` flag is returned.\n *\n * @typedef {String} module:engine/model/position~PositionRelation\n */\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/position.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module core/plugin\n */\n\nimport ObservableMixin from '@ckeditor/ckeditor5-utils/src/observablemixin';\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\n\n/**\n * The base class for CKEditor plugin classes.\n *\n * @mixes module:utils/observablemixin~ObservaleMixin\n */\nexport default class Plugin {\n\t/**\n\t * Creates a new Plugin instance. This is the first step of a plugin initialization.\n\t * See also {@link #init} and {@link #afterInit}.\n\t *\n\t * A plugin is always instantiated after its {@link module:core/plugin~Plugin.requires dependencies} and the\n\t * {@link #init} and {@link #afterInit} methods are called in the same order.\n\t *\n\t * Usually, you'll want to put your plugin's initialization code in the {@link #init} method.\n\t * The constructor can be understood as \"before init\" and used in special cases, just like\n\t * {@link #afterInit} servers for the special \"after init\" scenarios (e.g. code which depends on other\n\t * plugins, but which doesn't {@link module:core/plugin~Plugin.requires explicitly require} them).\n\t *\n\t * @param {module:core/editor/editor~Editor} editor\n\t */\n\tconstructor( editor ) {\n\t\t/**\n\t\t * The editor instance.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:core/editor/editor~Editor} module:core/plugin~Plugin#editor\n\t\t */\n\t\tthis.editor = editor;\n\t}\n\n\t/**\n\t * An array of plugins required by this plugin.\n\t *\n\t * To keep a plugin class definition tight it's recommended to define this property as a static getter:\n\t *\n\t *\t\timport Image from './image.js';\n\t *\n\t *\t\texport default class ImageCaption extends Plugin {\n     *\t\t\tstatic get requires() {\n     *\t\t\t\treturn [ Image ];\n     *\t\t\t}\n\t *\t\t}\n\t *\n\t * @static\n\t * @member {Array.<Function>|undefined} module:core/plugin~Plugin.requires\n\t */\n\n\t/**\n\t * Optional name of the plugin. If set, the plugin will be available in\n\t * {@link module:core/plugincollection~PluginCollection#get} by its\n\t * name and its constructor. If not, then only by its constructor.\n\t *\n\t * The name should reflect the package name + path to that module. E.g. `ckeditor5-image/src/image.js` plugin\n\t * should be named `image/image` (the `ckeditor5-` prefix is stripped during compilation).\n\t *\n\t * To keep a plugin class definition tight it's recommended to define this property as a static getter:\n\t *\n\t *\t\texport default class ImageCaption {\n     *\t\t\tstatic get pluginName() {\n     *\t\t\t\treturn 'image/imagecaption';\n     *\t\t\t}\n\t *\t\t}\n\t *\n\t * @static\n\t * @member {String|undefined} module:core/plugin~Plugin.pluginName\n\t */\n\n\t/**\n\t * The second stage (after plugin {@link #constructor}) of plugin initialization.\n\t * Unlike the plugin constructor this method can perform asynchronous.\n\t *\n\t * A plugin's `init()` method is called after its {@link module:core/plugin~Plugin.requires dependencies} are initialized,\n\t * so in the same order as constructors of these plugins.\n\t *\n\t * @returns {null|Promise}\n\t */\n\tinit() {}\n\n\t/**\n\t * The third (and last) stage of plugin initialization. See also {@link #constructor} and {@link #init}.\n\t *\n\t * @returns {null|Promise}\n\t */\n\tafterInit() {}\n\n\t/**\n\t * Destroys the plugin.\n\t *\n\t * @returns {null|Promise}\n\t */\n\tdestroy() {}\n}\n\nmix( Plugin, ObservableMixin );\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-core/src/plugin.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/range\n */\n\nimport Position from './position';\nimport TreeWalker from './treewalker';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/**\n * Range class. Range is iterable.\n */\nexport default class Range {\n\t/**\n\t * Creates a range spanning from `start` position to `end` position.\n\t *\n\t * **Note:** Constructor creates it's own {@link module:engine/model/position~Position Position} instances basing on passed values.\n\t *\n\t * @param {module:engine/model/position~Position} start Start position.\n\t * @param {module:engine/model/position~Position} [end] End position. If not set, range will be collapsed at `start` position.\n\t */\n\tconstructor( start, end = null ) {\n\t\t/**\n\t\t * Start position.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/model/position~Position}\n\t\t */\n\t\tthis.start = Position.createFromPosition( start );\n\n\t\t/**\n\t\t * End position.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/model/position~Position}\n\t\t */\n\t\tthis.end = end ? Position.createFromPosition( end ) : Position.createFromPosition( start );\n\t}\n\n\t/**\n\t * Returns an iterator that iterates over all {@link module:engine/model/item~Item items} that are in this range and returns\n\t * them together with additional information like length or {@link module:engine/model/position~Position positions},\n\t * grouped as {@link module:engine/model/treewalker~TreeWalkerValue}.\n\t * It iterates over all {@link module:engine/model/textproxy~TextProxy text contents} that are inside the range\n\t * and all the {@link module:engine/model/element~Element}s that are entered into when iterating over this range.\n\t *\n\t * This iterator uses {@link module:engine/model/treewalker~TreeWalker} with `boundaries` set to this range\n\t * and `ignoreElementEnd` option set to `true`.\n\t *\n\t * @returns {Iterable.<module:engine/model/treewalker~TreeWalkerValue>}\n\t */\n\t*[ Symbol.iterator ]() {\n\t\tyield* new TreeWalker( { boundaries: this, ignoreElementEnd: true } );\n\t}\n\n\t/**\n\t * Returns whether the range is collapsed, that is if {@link #start start} and\n\t * {@link #end end} positions are equal.\n\t *\n\t * @type {Boolean}\n\t */\n\tget isCollapsed() {\n\t\treturn this.start.isEqual( this.end );\n\t}\n\n\t/**\n\t * Returns whether this range is flat, that is if {@link #start start} position and\n\t * {@link #end end} position are in the same {@link module:engine/model/position~Position#parent parent}.\n\t *\n\t * @type {Boolean}\n\t */\n\tget isFlat() {\n\t\treturn this.start.parent === this.end.parent;\n\t}\n\n\t/**\n\t * Range root element.\n\t *\n\t * @type {module:engine/model/element~Element|module:engine/model/documentfragment~DocumentFragment}\n\t */\n\tget root() {\n\t\treturn this.start.root;\n\t}\n\n\t/**\n\t * Checks whether this range contains given {@link module:engine/model/position~Position position}.\n\t *\n\t * @param {module:engine/model/position~Position} position Position to check.\n\t * @returns {Boolean} `true` if given {@link module:engine/model/position~Position position} is contained in this range, `false` otherwise.\n\t */\n\tcontainsPosition( position ) {\n\t\treturn position.isAfter( this.start ) && position.isBefore( this.end );\n\t}\n\n\t/**\n\t * Checks whether this range contains given {@link ~Range range}.\n\t *\n\t * @param {module:engine/model/range~Range} otherRange Range to check.\n\t * @returns {Boolean} `true` if given {@link ~Range range} boundaries are contained by this range, `false` otherwise.\n\t */\n\tcontainsRange( otherRange ) {\n\t\treturn this.containsPosition( otherRange.start ) && this.containsPosition( otherRange.end );\n\t}\n\n\t/**\n\t * Two ranges are equal if their {@link #start start} and\n\t * {@link #end end} positions are equal.\n\t *\n\t * @param {module:engine/model/range~Range} otherRange Range to compare with.\n\t * @returns {Boolean} `true` if ranges are equal, `false` otherwise.\n\t */\n\tisEqual( otherRange ) {\n\t\treturn this.start.isEqual( otherRange.start ) && this.end.isEqual( otherRange.end );\n\t}\n\n\t/**\n\t * Checks and returns whether this range intersects with given range.\n\t *\n\t * @param {module:engine/model/range~Range} otherRange Range to compare with.\n\t * @returns {Boolean} `true` if ranges intersect, `false` otherwise.\n\t */\n\tisIntersecting( otherRange ) {\n\t\treturn this.start.isBefore( otherRange.end ) && this.end.isAfter( otherRange.start );\n\t}\n\n\t/**\n\t * Computes which part(s) of this {@link ~Range range} is not a part of given {@link ~Range range}.\n\t * Returned array contains zero, one or two {@link ~Range ranges}.\n\t *\n\t * Examples:\n\t *\n\t *\t\tlet range = new Range( new Position( root, [ 2, 7 ] ), new Position( root, [ 4, 0, 1 ] ) );\n\t *\t\tlet otherRange = new Range( new Position( root, [ 1 ] ), new Position( root, [ 5 ] ) );\n\t *\t\tlet transformed = range.getDifference( otherRange );\n\t *\t\t// transformed array has no ranges because `otherRange` contains `range`\n\t *\n\t *\t\totherRange = new Range( new Position( root, [ 1 ] ), new Position( root, [ 3 ] ) );\n\t *\t\ttransformed = range.getDifference( otherRange );\n\t *\t\t// transformed array has one range: from [ 3 ] to [ 4, 0, 1 ]\n\t *\n\t *\t\totherRange = new Range( new Position( root, [ 3 ] ), new Position( root, [ 4 ] ) );\n\t *\t\ttransformed = range.getDifference( otherRange );\n\t *\t\t// transformed array has two ranges: from [ 2, 7 ] to [ 3 ] and from [ 4 ] to [ 4, 0, 1 ]\n\t *\n\t * @param {module:engine/model/range~Range} otherRange Range to differentiate against.\n\t * @returns {Array.<module:engine/model/range~Range>} The difference between ranges.\n\t */\n\tgetDifference( otherRange ) {\n\t\tconst ranges = [];\n\n\t\tif ( this.isIntersecting( otherRange ) ) {\n\t\t\t// Ranges intersect.\n\n\t\t\tif ( this.containsPosition( otherRange.start ) ) {\n\t\t\t\t// Given range start is inside this range. This means that we have to\n\t\t\t\t// add shrunken range - from the start to the middle of this range.\n\t\t\t\tranges.push( new Range( this.start, otherRange.start ) );\n\t\t\t}\n\n\t\t\tif ( this.containsPosition( otherRange.end ) ) {\n\t\t\t\t// Given range end is inside this range. This means that we have to\n\t\t\t\t// add shrunken range - from the middle of this range to the end.\n\t\t\t\tranges.push( new Range( otherRange.end, this.end ) );\n\t\t\t}\n\t\t} else {\n\t\t\t// Ranges do not intersect, return the original range.\n\t\t\tranges.push( Range.createFromRange( this ) );\n\t\t}\n\n\t\treturn ranges;\n\t}\n\n\t/**\n\t * Returns an intersection of this {@link ~Range range} and given {@link ~Range range}.\n\t * Intersection is a common part of both of those ranges. If ranges has no common part, returns `null`.\n\t *\n\t * Examples:\n\t *\n\t *\t\tlet range = new Range( new Position( root, [ 2, 7 ] ), new Position( root, [ 4, 0, 1 ] ) );\n\t *\t\tlet otherRange = new Range( new Position( root, [ 1 ] ), new Position( root, [ 2 ] ) );\n\t *\t\tlet transformed = range.getIntersection( otherRange ); // null - ranges have no common part\n\t *\n\t *\t\totherRange = new Range( new Position( root, [ 3 ] ), new Position( root, [ 5 ] ) );\n\t *\t\ttransformed = range.getIntersection( otherRange ); // range from [ 3 ] to [ 4, 0, 1 ]\n\t *\n\t * @param {module:engine/model/range~Range} otherRange Range to check for intersection.\n\t * @returns {module:engine/model/range~Range|null} A common part of given ranges or `null` if ranges have no common part.\n\t */\n\tgetIntersection( otherRange ) {\n\t\tif ( this.isIntersecting( otherRange ) ) {\n\t\t\t// Ranges intersect, so a common range will be returned.\n\t\t\t// At most, it will be same as this range.\n\t\t\tlet commonRangeStart = this.start;\n\t\t\tlet commonRangeEnd = this.end;\n\n\t\t\tif ( this.containsPosition( otherRange.start ) ) {\n\t\t\t\t// Given range start is inside this range. This means thaNt we have to\n\t\t\t\t// shrink common range to the given range start.\n\t\t\t\tcommonRangeStart = otherRange.start;\n\t\t\t}\n\n\t\t\tif ( this.containsPosition( otherRange.end ) ) {\n\t\t\t\t// Given range end is inside this range. This means that we have to\n\t\t\t\t// shrink common range to the given range end.\n\t\t\t\tcommonRangeEnd = otherRange.end;\n\t\t\t}\n\n\t\t\treturn new Range( commonRangeStart, commonRangeEnd );\n\t\t}\n\n\t\t// Ranges do not intersect, so they do not have common part.\n\t\treturn null;\n\t}\n\n\t/**\n\t * Computes and returns the smallest set of {@link #isFlat flat} ranges, that covers this range in whole.\n\t *\n\t * See an example of a model structure (`[` and `]` are range boundaries):\n\t *\n\t *\t\troot                                                            root\n\t *\t\t |- element DIV                         DIV             P2              P3             DIV\n\t *\t\t |   |- element H                   H        P1        f o o           b a r       H         P4\n\t *\t\t |   |   |- \"fir[st\"             fir[st     lorem                               se]cond     ipsum\n\t *\t\t |   |- element P1\n\t *\t\t |   |   |- \"lorem\"                                              ||\n\t *\t\t |- element P2                                                   ||\n\t *\t\t |   |- \"foo\"                                                    VV\n\t *\t\t |- element P3\n\t *\t\t |   |- \"bar\"                                                   root\n\t *\t\t |- element DIV                         DIV             [P2             P3]             DIV\n\t *\t\t |   |- element H                   H       [P1]       f o o           b a r        H         P4\n\t *\t\t |   |   |- \"se]cond\"            fir[st]    lorem                               [se]cond     ipsum\n\t *\t\t |   |- element P4\n\t *\t\t |   |   |- \"ipsum\"\n\t *\n\t * As it can be seen, letters contained in the range are: `stloremfoobarse`, spread across different parents.\n\t * We are looking for minimal set of flat ranges that contains the same nodes.\n\t *\n\t * Minimal flat ranges for above range `( [ 0, 0, 3 ], [ 3, 0, 2 ] )` will be:\n\t *\n\t *\t\t( [ 0, 0, 3 ], [ 0, 0, 5 ] ) = \"st\"\n\t *\t\t( [ 0, 1 ], [ 0, 2 ] ) = element P1 (\"lorem\")\n\t *\t\t( [ 1 ], [ 3 ] ) = element P2, element P3 (\"foobar\")\n\t *\t\t( [ 3, 0, 0 ], [ 3, 0, 2 ] ) = \"se\"\n\t *\n\t * **Note:** if an {@link module:engine/model/element~Element element} is not wholly contained in this range, it won't be returned\n\t * in any of the returned flat ranges. See in the example how `H` elements at the beginning and at the end of the range\n\t * were omitted. Only their parts that were wholly in the range were returned.\n\t *\n\t * **Note:** this method is not returning flat ranges that contain no nodes.\n\t *\n\t * @returns {Array.<module:engine/model/range~Range>} Array of flat ranges covering this range.\n\t */\n\tgetMinimalFlatRanges() {\n\t\tconst ranges = [];\n\t\tconst diffAt = this.start.getCommonPath( this.end ).length;\n\n\t\tlet pos = Position.createFromPosition( this.start );\n\t\tlet posParent = pos.parent;\n\n\t\t// Go up.\n\t\twhile ( pos.path.length > diffAt + 1 ) {\n\t\t\tlet howMany = posParent.maxOffset - pos.offset;\n\n\t\t\tif ( howMany !== 0 ) {\n\t\t\t\tranges.push( new Range( pos, pos.getShiftedBy( howMany ) ) );\n\t\t\t}\n\n\t\t\tpos.path = pos.path.slice( 0, -1 );\n\t\t\tpos.offset++;\n\t\t\tposParent = posParent.parent;\n\t\t}\n\n\t\t// Go down.\n\t\twhile ( pos.path.length <= this.end.path.length ) {\n\t\t\tlet offset = this.end.path[ pos.path.length - 1 ];\n\t\t\tlet howMany = offset - pos.offset;\n\n\t\t\tif ( howMany !== 0 ) {\n\t\t\t\tranges.push( new Range( pos, pos.getShiftedBy( howMany ) ) );\n\t\t\t}\n\n\t\t\tpos.offset = offset;\n\t\t\tpos.path.push( 0 );\n\t\t}\n\n\t\treturn ranges;\n\t}\n\n\t/**\n\t * Creates a {@link module:engine/model/treewalker~TreeWalker TreeWalker} instance with this range as a boundary.\n\t *\n\t * @param {Object} options Object with configuration options. See {@link module:engine/model/treewalker~TreeWalker}.\n\t * @param {module:engine/model/position~Position} [options.startPosition]\n\t * @param {Boolean} [options.singleCharacters=false]\n\t * @param {Boolean} [options.shallow=false]\n\t * @param {Boolean} [options.ignoreElementEnd=false]\n\t */\n\tgetWalker( options = {} ) {\n\t\toptions.boundaries = this;\n\n\t\treturn new TreeWalker( options );\n\t}\n\n\t/**\n\t * Returns an iterator that iterates over all {@link module:engine/model/item~Item items} that are in this range and returns\n\t * them.\n\t *\n\t * This method uses {@link module:engine/model/treewalker~TreeWalker} with `boundaries` set to this range and `ignoreElementEnd` option\n\t * set to `true`. However it returns only {@link module:engine/model/item~Item model items},\n\t * not {@link module:engine/model/treewalker~TreeWalkerValue}.\n\t *\n\t * You may specify additional options for the tree walker. See {@link module:engine/model/treewalker~TreeWalker} for\n\t * a full list of available options.\n\t *\n\t * @method getItems\n\t * @param {Object} options Object with configuration options. See {@link module:engine/model/treewalker~TreeWalker}.\n\t * @returns {Iterable.<module:engine/model/item~Item>}\n\t */\n\t*getItems( options = {} ) {\n\t\toptions.boundaries = this;\n\t\toptions.ignoreElementEnd = true;\n\n\t\tconst treeWalker = new TreeWalker( options );\n\n\t\tfor ( let value of treeWalker ) {\n\t\t\tyield value.item;\n\t\t}\n\t}\n\n\t/**\n\t * Returns an iterator that iterates over all {@link module:engine/model/position~Position positions} that are boundaries or\n\t * contained in this range.\n\t *\n\t * This method uses {@link module:engine/model/treewalker~TreeWalker} with `boundaries` set to this range. However it returns only\n\t * {@link module:engine/model/position~Position positions}, not {@link module:engine/model/treewalker~TreeWalkerValue}.\n\t *\n\t * You may specify additional options for the tree walker. See {@link module:engine/model/treewalker~TreeWalker} for\n\t * a full list of available options.\n\t *\n\t * @param {Object} options Object with configuration options. See {@link module:engine/model/treewalker~TreeWalker}.\n\t * @returns {Iterable.<module:engine/model/position~Position>}\n\t */\n\t*getPositions( options = {} ) {\n\t\toptions.boundaries = this;\n\n\t\tconst treeWalker = new TreeWalker( options );\n\n\t\tyield treeWalker.position;\n\n\t\tfor ( let value of treeWalker ) {\n\t\t\tyield value.nextPosition;\n\t\t}\n\t}\n\n\t/**\n\t * Returns a range that is a result of transforming this range by given `delta`.\n\t *\n\t * **Note:** transformation may break one range into multiple ranges (e.g. when a part of the range is\n\t * moved to a different part of document tree). For this reason, an array is returned by this method and it\n\t * may contain one or more `Range` instances.\n\t *\n\t * @param {module:engine/model/delta/delta~Delta} delta Delta to transform range by.\n\t * @returns {Array.<module:engine/model/range~Range>} Range which is the result of transformation.\n\t */\n\tgetTransformedByDelta( delta ) {\n\t\tlet ranges = [ Range.createFromRange( this ) ];\n\n\t\t// Operation types that a range can be transformed by.\n\t\tconst supportedTypes = new Set( [ 'insert', 'move', 'remove', 'reinsert' ] );\n\n\t\tfor ( let operation of delta.operations ) {\n\t\t\tif ( supportedTypes.has( operation.type ) ) {\n\t\t\t\tfor ( let i = 0; i < ranges.length; i++ ) {\n\t\t\t\t\tconst result = ranges[ i ]._getTransformedByDocumentChange(\n\t\t\t\t\t\toperation.type,\n\t\t\t\t\t\tdelta.type,\n\t\t\t\t\t\toperation.targetPosition || operation.position,\n\t\t\t\t\t\toperation.howMany || operation.nodes.maxOffset,\n\t\t\t\t\t\toperation.sourcePosition\n\t\t\t\t\t);\n\n\t\t\t\t\tranges.splice( i, 1, ...result );\n\n\t\t\t\t\ti += result.length - 1;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn ranges;\n\t}\n\n\t/**\n\t * Returns a range that is a result of transforming this range by multiple `deltas`.\n\t *\n\t * **Note:** transformation may break one range into multiple ranges (e.g. when a part of the range is\n\t * moved to a different part of document tree). For this reason, an array is returned by this method and it\n\t * may contain one or more `Range` instances.\n\t *\n\t * @param {Iterable.<module:engine/model/delta~Delta>} deltas Deltas to transform the range by.\n\t * @returns {Array.<module:engine/model/range~Range>} Range which is the result of transformation.\n\t */\n\tgetTransformedByDeltas( deltas ) {\n\t\tlet ranges = [ Range.createFromRange( this ) ];\n\n\t\tfor ( let delta of deltas ) {\n\t\t\tfor ( let i = 0; i < ranges.length; i++ ) {\n\t\t\t\tlet result = ranges[ i ].getTransformedByDelta( delta );\n\n\t\t\t\tranges.splice( i, 1, ...result );\n\t\t\t\ti += result.length - 1;\n\t\t\t}\n\t\t}\n\n\t\t// It may happen that a range is split into two, and then the part of second \"piece\" is moved into first\n\t\t// \"piece\". In this case we will have incorrect third rage, which should not be included in the result --\n\t\t// because it is already included in first \"piece\". In this loop we are looking for all such ranges that\n\t\t// are inside other ranges and we simply remove them.\n\t\tfor ( let i = 0; i < ranges.length; i++ ) {\n\t\t\tconst range = ranges[ i ];\n\n\t\t\tfor ( let j = i + 1; j < ranges.length; j++ ) {\n\t\t\t\tconst next = ranges[ j ];\n\n\t\t\t\tif ( range.containsRange( next ) || next.containsRange( range ) || range.isEqual( next ) ) {\n\t\t\t\t\tranges.splice( j, 1 );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn ranges;\n\t}\n\n\t/**\n\t * Returns a range that is a result of transforming this range by a change in the model document.\n\t *\n\t * @protected\n\t * @param {'insert'|'move'|'remove'|'reinsert'} type Change type.\n\t * @param {String} deltaType Type of delta that introduced the change.\n\t * @param {module:engine/model/position~Position} targetPosition Position before the first changed node.\n\t * @param {Number} howMany How many nodes has been changed.\n\t * @param {module:engine/model/position~Position} sourcePosition Source position of changes.\n\t * @returns {Array.<module:engine/model/range~Range>}\n\t */\n\t_getTransformedByDocumentChange( type, deltaType, targetPosition, howMany, sourcePosition ) {\n\t\tif ( type == 'insert' ) {\n\t\t\treturn this._getTransformedByInsertion( targetPosition, howMany, false, false );\n\t\t} else {\n\t\t\tconst ranges = this._getTransformedByMove( sourcePosition, targetPosition, howMany );\n\n\t\t\tif ( deltaType == 'split' && this.containsPosition( sourcePosition ) ) {\n\t\t\t\t// Special case for splitting element inside range.\n\t\t\t\t// <p>f[ooba]r</p> -> <p>f[oo</p><p>ba]r</p>\n\t\t\t\tranges[ 0 ].end = ranges[ 1 ].end;\n\t\t\t\tranges.pop();\n\t\t\t} else if ( deltaType == 'merge' && type == 'move' && this.isCollapsed && ranges[ 0 ].start.isEqual( sourcePosition ) ) {\n\t\t\t\t// Special case when collapsed range is in merged element.\n\t\t\t\t// <p>foo</p><p>[]bar{}</p> -> <p>foo[]bar{}</p>\n\t\t\t\tranges[ 0 ] = new Range( targetPosition.getShiftedBy( this.start.offset ) );\n\t\t\t}\n\n\t\t\treturn ranges;\n\t\t}\n\t}\n\n\t/**\n\t * Returns an array containing one or two {@link ~Range ranges} that are a result of transforming this\n\t * {@link ~Range range} by inserting `howMany` nodes at `insertPosition`. Two {@link ~Range ranges} are\n\t * returned if the insertion was inside this {@link ~Range range} and `spread` is set to `true`.\n\t *\n\t * Examples:\n\t *\n\t *\t\tlet range = new Range( new Position( root, [ 2, 7 ] ), new Position( root, [ 4, 0, 1 ] ) );\n\t *\t\tlet transformed = range._getTransformedByInsertion( new Position( root, [ 1 ] ), 2 );\n\t *\t\t// transformed array has one range from [ 4, 7 ] to [ 6, 0, 1 ]\n\t *\n\t *\t\ttransformed = range._getTransformedByInsertion( new Position( root, [ 4, 0, 0 ] ), 4 );\n\t *\t\t// transformed array has one range from [ 2, 7 ] to [ 4, 0, 5 ]\n\t *\n\t *\t\ttransformed = range._getTransformedByInsertion( new Position( root, [ 3, 2 ] ), 4 );\n\t *\t\t// transformed array has one range, which is equal to original range\n\t *\n\t *\t\ttransformed = range._getTransformedByInsertion( new Position( root, [ 3, 2 ] ), 4, true );\n\t *\t\t// transformed array has two ranges: from [ 2, 7 ] to [ 3, 2 ] and from [ 3, 6 ] to [ 4, 0, 1 ]\n\t *\n\t *\t\ttransformed = range._getTransformedByInsertion( new Position( root, [ 4, 0, 1 ] ), 4, false, false );\n\t *\t\t// transformed array has one range which is equal to original range because insertion is after the range boundary\n\t *\n\t *\t\ttransformed = range._getTransformedByInsertion( new Position( root, [ 4, 0, 1 ] ), 4, false, true );\n\t *\t\t// transformed array has one range: from [ 2, 7 ] to [ 4, 0, 5 ] because range was expanded\n\t *\n\t * @protected\n\t * @param {module:engine/model/position~Position} insertPosition Position where nodes are inserted.\n\t * @param {Number} howMany How many nodes are inserted.\n\t * @param {Boolean} [spread] Flag indicating whether this {~Range range} should be spread if insertion\n\t * was inside the range. Defaults to `false`.\n\t * @param {Boolean} [isSticky] Flag indicating whether insertion should expand a range if it is in a place of\n\t * range boundary. Defaults to `false`.\n\t * @returns {Array.<module:engine/model/range~Range>} Result of the transformation.\n\t */\n\t_getTransformedByInsertion( insertPosition, howMany, spread = false, isSticky = false ) {\n\t\tif ( spread && this.containsPosition( insertPosition ) ) {\n\t\t\t// Range has to be spread. The first part is from original start to the spread point.\n\t\t\t// The other part is from spread point to the original end, but transformed by\n\t\t\t// insertion to reflect insertion changes.\n\n\t\t\treturn [\n\t\t\t\tnew Range( this.start, insertPosition ),\n\t\t\t\tnew Range(\n\t\t\t\t\tinsertPosition._getTransformedByInsertion( insertPosition, howMany, true ),\n\t\t\t\t\tthis.end._getTransformedByInsertion( insertPosition, howMany, this.isCollapsed )\n\t\t\t\t)\n\t\t\t];\n\t\t} else {\n\t\t\tconst range = Range.createFromRange( this );\n\n\t\t\tlet insertBeforeStart = range.isCollapsed ? true : !isSticky;\n\t\t\tlet insertBeforeEnd = range.isCollapsed ? true : isSticky;\n\n\t\t\trange.start = range.start._getTransformedByInsertion( insertPosition, howMany, insertBeforeStart );\n\t\t\trange.end = range.end._getTransformedByInsertion( insertPosition, howMany, insertBeforeEnd );\n\n\t\t\treturn [ range ];\n\t\t}\n\t}\n\n\t/**\n\t * Returns an array containing {@link ~Range ranges} that are a result of transforming this\n\t * {@link ~Range range} by moving `howMany` nodes from `sourcePosition` to `targetPosition`.\n\t *\n\t * @protected\n\t * @param {module:engine/model/position~Position} sourcePosition Position from which nodes are moved.\n\t * @param {module:engine/model/position~Position} targetPosition Position to where nodes are moved.\n\t * @param {Number} howMany How many nodes are moved.\n\t * @returns {Array.<module:engine/model/range~Range>} Result of the transformation.\n\t */\n\t_getTransformedByMove( sourcePosition, targetPosition, howMany ) {\n\t\tif ( this.isCollapsed ) {\n\t\t\tconst newPos = this.start._getTransformedByMove( sourcePosition, targetPosition, howMany, true, false );\n\n\t\t\treturn [ new Range( newPos ) ];\n\t\t}\n\n\t\tlet result;\n\n\t\tconst moveRange = new Range( sourcePosition, sourcePosition.getShiftedBy( howMany ) );\n\n\t\tconst differenceSet = this.getDifference( moveRange );\n\t\tlet difference = null;\n\n\t\tconst common = this.getIntersection( moveRange );\n\n\t\tif ( differenceSet.length == 1 ) {\n\t\t\t// `moveRange` and this range may intersect.\n\t\t\tdifference = new Range(\n\t\t\t\tdifferenceSet[ 0 ].start._getTransformedByDeletion( sourcePosition, howMany ),\n\t\t\t\tdifferenceSet[ 0 ].end._getTransformedByDeletion( sourcePosition, howMany )\n\t\t\t);\n\t\t} else if ( differenceSet.length == 2 ) {\n\t\t\t// `moveRange` is inside this range.\n\t\t\tdifference = new Range(\n\t\t\t\tthis.start,\n\t\t\t\tthis.end._getTransformedByDeletion( sourcePosition, howMany )\n\t\t\t);\n\t\t} // else, `moveRange` contains this range.\n\n\t\tconst insertPosition = targetPosition._getTransformedByDeletion( sourcePosition, howMany );\n\n\t\tif ( difference ) {\n\t\t\tresult = difference._getTransformedByInsertion( insertPosition, howMany, common !== null );\n\t\t} else {\n\t\t\tresult = [];\n\t\t}\n\n\t\tif ( common ) {\n\t\t\tresult.push( new Range(\n\t\t\t\tcommon.start._getCombined( moveRange.start, insertPosition ),\n\t\t\t\tcommon.end._getCombined( moveRange.start, insertPosition )\n\t\t\t) );\n\t\t}\n\n\t\treturn result;\n\t}\n\n\t/**\n\t * Creates a new range, spreading from specified {@link module:engine/model/position~Position position} to a position moved by\n\t * given `shift`. If `shift` is a negative value, shifted position is treated as the beginning of the range.\n\t *\n\t * @param {module:engine/model/position~Position} position Beginning of the range.\n\t * @param {Number} shift How long the range should be.\n\t * @returns {module:engine/model/range~Range}\n\t */\n\tstatic createFromPositionAndShift( position, shift ) {\n\t\tconst start = position;\n\t\tconst end = position.getShiftedBy( shift );\n\n\t\treturn shift > 0 ? new this( start, end ) : new this( end, start );\n\t}\n\n\t/**\n\t * Creates a range from given parents and offsets.\n\t *\n\t * @param {module:engine/model/element~Element} startElement Start position parent element.\n\t * @param {Number} startOffset Start position offset.\n\t * @param {module:engine/model/element~Element} endElement End position parent element.\n\t * @param {Number} endOffset End position offset.\n\t * @returns {module:engine/model/range~Range}\n\t */\n\tstatic createFromParentsAndOffsets( startElement, startOffset, endElement, endOffset ) {\n\t\treturn new this(\n\t\t\tPosition.createFromParentAndOffset( startElement, startOffset ),\n\t\t\tPosition.createFromParentAndOffset( endElement, endOffset )\n\t\t);\n\t}\n\n\t/**\n\t * Creates a new instance of `Range` which is equal to passed range.\n\t *\n\t * @param {module:engine/model/range~Range} range Range to clone.\n\t * @returns {module:engine/model/range~Range}\n\t */\n\tstatic createFromRange( range ) {\n\t\treturn new this( range.start, range.end );\n\t}\n\n\t/**\n\t * Creates a range inside an {@link module:engine/model/element~Element element} which starts before the first child of\n\t * that element and ends after the last child of that element.\n\t *\n\t * @param {module:engine/model/element~Element} element Element which is a parent for the range.\n\t * @returns {module:engine/model/range~Range}\n\t */\n\tstatic createIn( element ) {\n\t\treturn this.createFromParentsAndOffsets( element, 0, element, element.maxOffset );\n\t}\n\n\t/**\n\t * Creates a range that starts before given {@link module:engine/model/item~Item model item} and ends after it.\n\t *\n\t * @param {module:engine/model/item~Item} item\n\t * @returns {module:engine/model/range~Range}\n\t */\n\tstatic createOn( item ) {\n\t\treturn this.createFromPositionAndShift( Position.createBefore( item ), item.offsetSize );\n\t}\n\n\t/**\n\t * Combines all ranges from the passed array into a one range. At least one range has to be passed.\n\t * Passed ranges must not have common parts.\n\t *\n\t * The first range from the array is a reference range. If other ranges starts or ends on the exactly same position where\n\t * the reference range, they get combined into one range.\n\t *\n\t *\t\t[  ][]  [    ][ ][  ref range  ][ ][]  [  ]  // Passed ranges, shown sorted. \"Ref range\" was the first range in original array.\n\t *\t\t        [      returned range       ]  [  ]  // The combined range.\n\t *\t\t[    ]                                       // The result of the function if the first range was a reference range.\n\t *\t            [                           ]        // The result of the function if the third-to-seventh range was a reference range.\n\t *\t                                           [  ]  // The result of the function if the last range was a reference range.\n\t *\n\t * @param {Array.<module:engine/model/range~Range>} ranges Ranges to combine.\n\t * @returns {module:engine/model/range~Range} Combined range.\n\t */\n\tstatic createFromRanges( ranges ) {\n\t\tif ( ranges.length === 0 ) {\n\t\t\t/**\n\t\t\t * At least one range has to be passed.\n\t\t\t *\n\t\t\t * @error range-create-from-ranges-empty-array\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'range-create-from-ranges-empty-array: At least one range has to be passed.' );\n\t\t} else if ( ranges.length == 1 ) {\n\t\t\treturn this.createFromRange( ranges[ 0 ] );\n\t\t}\n\n\t\t// 1. Set the first range in `ranges` array as a reference range.\n\t\t// If we are going to return just a one range, one of the ranges need to be the reference one.\n\t\t// Other ranges will be stuck to that range, if possible.\n\t\tconst ref = ranges[ 0 ];\n\n\t\t// 2. Sort all the ranges so it's easier to process them.\n\t\tranges.sort( ( a, b ) => a.start.isAfter( b.start ) );\n\n\t\t// 3. Check at which index the reference range is now.\n\t\tconst refIndex = ranges.indexOf( ref );\n\n\t\t// 4. At this moment we don't need the original range.\n\t\t// We are going to modify the result and we need to return a new instance of Range.\n\t\t// We have to create a copy of the reference range.\n\t\tconst result = new this( ref.start, ref.end );\n\n\t\t// 5. Ranges should be checked and glued starting from the range that is closest to the reference range.\n\t\t// Since ranges are sorted, start with the range with index that is closest to reference range index.\n\t\tfor ( let i = refIndex - 1; i >= 0; i++ ) {\n\t\t\tif ( ranges[ i ].end.isEqual( result.start ) ) {\n\t\t\t\tresult.start = Position.createFromPosition( ranges[ i ].start );\n\t\t\t} else {\n\t\t\t\t// If ranges are not starting/ending at the same position there is no point in looking further.\n\t\t\t\tbreak;\n\t\t\t}\n\t\t}\n\n\t\t// 6. Ranges should be checked and glued starting from the range that is closest to the reference range.\n\t\t// Since ranges are sorted, start with the range with index that is closest to reference range index.\n\t\tfor ( let i = refIndex + 1; i < ranges.length; i++ ) {\n\t\t\tif ( ranges[ i ].start.isEqual( result.end ) ) {\n\t\t\t\tresult.end = Position.createFromPosition( ranges[ i ].end );\n\t\t\t} else {\n\t\t\t\t// If ranges are not starting/ending at the same position there is no point in looking further.\n\t\t\t\tbreak;\n\t\t\t}\n\t\t}\n\n\t\treturn result;\n\t}\n\n\t/**\n\t * Creates a `Range` instance from given plain object (i.e. parsed JSON string).\n\t *\n\t * @param {Object} json Plain object to be converted to `Range`.\n\t * @param {module:engine/model/document~Document} doc Document object that will be range owner.\n\t * @returns {module:engine/model/element~Element} `Range` instance created using given plain object.\n\t */\n\tstatic fromJSON( json, doc ) {\n\t\treturn new this( Position.fromJSON( json.start, doc ), Position.fromJSON( json.end, doc ) );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/range.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/mix\n */\n\n/**\n * Copies enumerable properties and symbols from the objects given as 2nd+ parameters to the\n * prototype of first object (a constructor).\n *\n *\t\tclass Editor {\n *\t\t\t...\n *\t\t}\n *\n *\t\tconst SomeMixin = {\n *\t\t\ta() {\n *\t\t\t\treturn 'a';\n *\t\t\t}\n *\t\t};\n *\n *\t\tmix( Editor, SomeMixin, ... );\n *\n *\t\tnew Editor().a(); // -> 'a'\n *\n * Note: Properties which already exist in the base class will not be overriden.\n *\n * @param {Function} [baseClass] Class which prototype will be extended.\n * @param {Object} [...mixins] Objects from which to get properties.\n */\nexport default function mix( baseClass, ...mixins ) {\n\tmixins.forEach( ( mixin ) => {\n\t\tObject.getOwnPropertyNames( mixin ).concat( Object.getOwnPropertySymbols( mixin ) )\n\t\t\t.forEach( ( key ) => {\n\t\t\t\tif ( key in baseClass.prototype ) {\n\t\t\t\t\treturn;\n\t\t\t\t}\n\n\t\t\t\tconst sourceDescriptor = Object.getOwnPropertyDescriptor( mixin, key );\n\t\t\t\tsourceDescriptor.enumerable = false;\n\n\t\t\t\tObject.defineProperty( baseClass.prototype, key, sourceDescriptor );\n\t\t\t} );\n\t} );\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/mix.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/element\n */\n\nimport Node from './node';\nimport NodeList from './nodelist';\nimport Text from './text';\nimport isIterable from '@ckeditor/ckeditor5-utils/src/isiterable';\n\n/**\n * Model element. Type of {@link module:engine/model/node~Node node} that has a {@link module:engine/model/element~Element#name name} and\n * {@link module:engine/model/element~Element#getChildren child nodes}.\n *\n * **Important**: see {@link module:engine/model/node~Node} to read about restrictions using `Element` and `Node` API.\n */\nexport default class Element extends Node {\n\t/**\n\t * Creates a model element.\n\t *\n\t * @param {String} name Element's name.\n\t * @param {Object} [attrs] Element's attributes. See {@link module:utils/tomap~toMap} for a list of accepted values.\n\t * @param {module:engine/model/node~Node|Iterable.<module:engine/model/node~Node>} [children]\n\t * One or more nodes to be inserted as children of created element.\n\t */\n\tconstructor( name, attrs, children ) {\n\t\tsuper( attrs );\n\n\t\t/**\n\t\t * Element name.\n\t\t *\n\t\t * @member {String} module:engine/model/element~Element#name\n\t\t */\n\t\tthis.name = name;\n\n\t\t/**\n\t\t * List of children nodes.\n\t\t *\n\t\t * @private\n\t\t * @member {module:engine/model/nodelist~NodeList} module:engine/model/element~Element#_children\n\t\t */\n\t\tthis._children = new NodeList();\n\n\t\tif ( children ) {\n\t\t\tthis.insertChildren( 0, children );\n\t\t}\n\t}\n\n\t/**\n\t * Number of this element's children.\n\t *\n\t * @readonly\n\t * @type {Number}\n\t */\n\tget childCount() {\n\t\treturn this._children.length;\n\t}\n\n\t/**\n\t * Sum of {module:engine/model/node~Node#offsetSize offset sizes} of all of this element's children.\n\t *\n\t * @readonly\n\t * @type {Number}\n\t */\n\tget maxOffset() {\n\t\treturn this._children.maxOffset;\n\t}\n\n\t/**\n\t * Is `true` if there are no nodes inside this element, `false` otherwise.\n\t *\n\t * @readonly\n\t * @type {Boolean}\n\t */\n\tget isEmpty() {\n\t\treturn this.childCount === 0;\n\t}\n\n\t/**\n\t * Checks whether given model tree object is of given type.\n\t *\n\t * Read more in {@link module:engine/model/node~Node#is}.\n\t *\n\t * @param {String} type\n\t * @param {String} [name] Element name.\n\t * @returns {Boolean}\n\t */\n\tis( type, name = null ) {\n\t\tif ( !name ) {\n\t\t\treturn type == 'element' || type == this.name;\n\t\t} else {\n\t\t\treturn type == 'element' && name == this.name;\n\t\t}\n\t}\n\n\t/**\n\t * Gets the child at the given index.\n\t *\n\t * @param {Number} index Index of child.\n\t * @returns {module:engine/model/node~Node} Child node.\n\t */\n\tgetChild( index ) {\n\t\treturn this._children.getNode( index );\n\t}\n\n\t/**\n\t * Returns an iterator that iterates over all of this element's children.\n\t *\n\t * @returns {Iterable.<module:engine/model/node~Node>}\n\t */\n\tgetChildren() {\n\t\treturn this._children[ Symbol.iterator ]();\n\t}\n\n\t/**\n\t * Returns an index of the given child node. Returns `null` if given node is not a child of this element.\n\t *\n\t * @param {module:engine/model/node~Node} node Child node to look for.\n\t * @returns {Number} Child node's index in this element.\n\t */\n\tgetChildIndex( node ) {\n\t\treturn this._children.getNodeIndex( node );\n\t}\n\n\t/**\n\t * Returns the starting offset of given child. Starting offset is equal to the sum of\n\t * {module:engine/model/node~Node#offsetSize offset sizes} of all node's siblings that are before it. Returns `null` if\n\t * given node is not a child of this element.\n\t *\n\t * @param {module:engine/model/node~Node} node Child node to look for.\n\t * @returns {Number} Child node's starting offset.\n\t */\n\tgetChildStartOffset( node ) {\n\t\treturn this._children.getNodeStartOffset( node );\n\t}\n\n\t/**\n\t * Creates a copy of this element and returns it. Created element has same name and attributes as original element.\n\t * If clone is not deep, children of copied element are references to the same nodes as in original element.\n\t * If clone is deep, original element's children are also cloned.\n\t *\n\t * @param {Boolean} [deep=false] Decides whether children of this element should also be cloned (`true`) or not (`false`).\n\t */\n\tclone( deep = false ) {\n\t\tconst children = deep ?\n\t\t\tArray.from( this._children ).map( ( node ) => node.clone() ) :\n\t\t\tArray.from( this._children );\n\n\t\treturn new Element( this.name, this.getAttributes(), children );\n\t}\n\n\t/**\n\t * Returns index of a node that occupies given offset. If given offset is too low, returns `0`. If given offset is\n\t * too high, returns {@link module:engine/model/element~Element#getChildIndex index after last child}.\n\t *\n\t *\t\tconst textNode = new Text( 'foo' );\n\t *\t\tconst pElement = new Element( 'p' );\n\t *\t\tconst divElement = new Element( [ textNode, pElement ] );\n\t *\t\tdivElement.offsetToIndex( -1 ); // Returns 0, because offset is too low.\n\t *\t\tdivElement.offsetToIndex( 0 ); // Returns 0, because offset 0 is taken by `textNode` which is at index 0.\n\t *\t\tdivElement.offsetToIndex( 1 ); // Returns 0, because `textNode` has `offsetSize` equal to 3, so it occupies offset 1 too.\n\t *\t\tdivElement.offsetToIndex( 2 ); // Returns 0.\n\t *\t\tdivElement.offsetToIndex( 3 ); // Returns 1.\n\t *\t\tdivElement.offsetToIndex( 4 ); // Returns 2. There are no nodes at offset 4, so last available index is returned.\n\t *\n\t * @param {Number} offset Offset to look for.\n\t * @returns {Number}\n\t */\n\toffsetToIndex( offset ) {\n\t\treturn this._children.offsetToIndex( offset );\n\t}\n\n\t/**\n\t * {@link module:engine/model/element~Element#insertChildren Inserts} one or more nodes at the end of this element.\n\t *\n\t * @param {module:engine/model/node~Node|Iterable.<module:engine/model/node~Node>} nodes Nodes to be inserted.\n\t */\n\tappendChildren( nodes ) {\n\t\tthis.insertChildren( this.childCount, nodes );\n\t}\n\n\t/**\n\t * Inserts one or more nodes at the given index and sets {@link module:engine/model/node~Node#parent parent} of these nodes\n\t * to this element.\n\t *\n\t * @param {Number} index Index at which nodes should be inserted.\n\t * @param {module:engine/model/node~Node|Iterable.<module:engine/model/node~Node>} nodes Nodes to be inserted.\n\t */\n\tinsertChildren( index, nodes ) {\n\t\tnodes = normalize( nodes );\n\n\t\tfor ( let node of nodes ) {\n\t\t\tnode.parent = this;\n\t\t}\n\n\t\tthis._children.insertNodes( index, nodes );\n\t}\n\n\t/**\n\t * Removes one or more nodes starting at the given index and sets\n\t * {@link module:engine/model/node~Node#parent parent} of these nodes to `null`.\n\t *\n\t * @param {Number} index Index of the first node to remove.\n\t * @param {Number} [howMany=1] Number of nodes to remove.\n\t * @returns {Array.<module:engine/model/node~Node>} Array containing removed nodes.\n\t */\n\tremoveChildren( index, howMany = 1 ) {\n\t\tconst nodes = this._children.removeNodes( index, howMany );\n\n\t\tfor ( let node of nodes ) {\n\t\t\tnode.parent = null;\n\t\t}\n\n\t\treturn nodes;\n\t}\n\n\t/**\n\t * Returns a descendant node by its path relative to this element.\n\t *\n\t *\t\t// <this>a<b>c</b></this>\n\t *\t\tthis.getNodeByPath( [ 0 ] );     // -> \"a\"\n\t *\t\tthis.getNodeByPath( [ 1 ] );     // -> <b>\n\t *\t\tthis.getNodeByPath( [ 1, 0 ] );  // -> \"c\"\n\t *\n\t * @param {Array.<Number>} relativePath Path of the node to find, relative to this element.\n\t * @returns {module:engine/model/node~Node}\n\t */\n\tgetNodeByPath( relativePath ) {\n\t\tlet node = this;\n\n\t\tfor ( const index of relativePath ) {\n\t\t\tnode = node.getChild( index );\n\t\t}\n\n\t\treturn node;\n\t}\n\n\t/**\n\t * Converts `Element` instance to plain object and returns it. Takes care of converting all of this element's children.\n\t *\n\t * @returns {Object} `Element` instance converted to plain object.\n\t */\n\ttoJSON() {\n\t\tlet json = super.toJSON();\n\n\t\tjson.name = this.name;\n\n\t\tif ( this._children.length > 0 ) {\n\t\t\tjson.children = [];\n\n\t\t\tfor ( let node of this._children ) {\n\t\t\t\tjson.children.push( node.toJSON() );\n\t\t\t}\n\t\t}\n\n\t\treturn json;\n\t}\n\n\t/**\n\t * Creates an `Element` instance from given plain object (i.e. parsed JSON string).\n\t * Converts `Element` children to proper nodes.\n\t *\n\t * @param {Object} json Plain object to be converted to `Element`.\n\t * @returns {module:engine/model/element~Element} `Element` instance created using given plain object.\n\t */\n\tstatic fromJSON( json ) {\n\t\tlet children = null;\n\n\t\tif ( json.children ) {\n\t\t\tchildren = [];\n\n\t\t\tfor ( let child of json.children ) {\n\t\t\t\tif ( child.name ) {\n\t\t\t\t\t// If child has name property, it is an Element.\n\t\t\t\t\tchildren.push( Element.fromJSON( child ) );\n\t\t\t\t} else {\n\t\t\t\t\t// Otherwise, it is a Text node.\n\t\t\t\t\tchildren.push( Text.fromJSON( child ) );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn new Element( json.name, json.attributes, children );\n\t}\n}\n\n// Converts strings to Text and non-iterables to arrays.\n//\n// @param {String|module:engine/model/node~Node|Iterable.<String|module:engine/model/node~Node>}\n// @return {Iterable.<module:engine/model/node~Node>}\nfunction normalize( nodes ) {\n\t// Separate condition because string is iterable.\n\tif ( typeof nodes == 'string' ) {\n\t\treturn [ new Text( nodes ) ];\n\t}\n\n\tif ( !isIterable( nodes ) ) {\n\t\tnodes = [ nodes ];\n\t}\n\n\t// Array.from to enable .map() on non-arrays.\n\treturn Array.from( nodes ).map( ( node ) => typeof node == 'string' ? new Text( node ) : node );\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/element.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/template\n */\n\n/* global document */\n\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\nimport EmitterMixin from '@ckeditor/ckeditor5-utils/src/emittermixin';\nimport Collection from '@ckeditor/ckeditor5-utils/src/collection';\nimport View from './view';\nimport ViewCollection from './viewcollection';\nimport cloneDeepWith from '@ckeditor/ckeditor5-utils/src/lib/lodash/cloneDeepWith';\nimport isObject from '@ckeditor/ckeditor5-utils/src/lib/lodash/isObject';\nimport log from '@ckeditor/ckeditor5-utils/src/log';\n\nconst xhtmlNs = 'http://www.w3.org/1999/xhtml';\n\n/**\n * A basic Template class. It renders DOM HTMLElement or Text from {@link module:ui/template~TemplateDefinition} and supports\n * element attributes, children, bindings to {@link module:utils/observablemixin~ObservableMixin} instances and DOM events\n * propagation. For example:\n *\n *\t\tnew Template( {\n *\t\t\ttag: 'p',\n *\t\t\tattributes: {\n *\t\t\t\tclass: 'foo',\n *\t\t\t\tstyle: {\n *\t\t\t\t\tbackgroundColor: 'yellow'\n *\t\t\t\t}\n *\t\t\t},\n *\t\t\tchildren: [\n *\t\t\t\t'A paragraph.'\n *\t\t\t]\n *\t\t} ).render();\n *\n * will render the following HTMLElement:\n *\n *\t\t<p class=\"foo\" style=\"background-color: yellow;\">A paragraph.</p>\n *\n * See {@link module:ui/template~TemplateDefinition} to know more about templates and complex template definitions.\n *\n* @mixes module:utils/emittermixin~EmitterMixin\n */\nexport default class Template {\n\t/**\n\t * Creates an instance of the {@link ~Template} class.\n\t *\n\t * @param {module:ui/template~TemplateDefinition} def The definition of the template.\n\t */\n\tconstructor( def ) {\n\t\tObject.assign( this, normalize( clone( def ) ) );\n\n\t\t/**\n\t\t * Indicates whether this particular Template instance has been\n\t\t * {@link #render rendered}.\n\t\t *\n\t\t * @readonly\n\t\t * @protected\n\t\t * @member {Boolean}\n\t\t */\n\t\tthis._isRendered = false;\n\n\t\t/**\n\t\t * Tag of this template, i.e. `div`, indicating that the instance will render\n\t\t * to an HTMLElement.\n\t\t *\n\t\t * @member {String} #tag\n\t\t */\n\n\t\t/**\n\t\t * Text of this template, indicating that the instance will render to a DOM Text.\n\t\t *\n\t\t * @member {Array.<String|module:ui/template~TemplateValueSchema>} #text\n\t\t */\n\n\t\t/**\n\t\t * Attributes of this template, i.e. `{ id: [ 'ck-id' ] }`, corresponding with\n\t\t * HTML attributes on HTMLElement.\n\t\t *\n\t\t * Note: Only when {@link #tag} is defined.\n\t\t *\n\t\t * @member {Object} #attributes\n\t\t */\n\n\t\t/**\n\t\t * Children of this template; sub–templates. Each one is an independent\n\t\t * instance of {@link ~Template}.\n\t\t *\n\t\t * Note: Only when {@link #tag} is defined.\n\t\t *\n\t\t * @member {module:utils/collection~Collection.<module:ui/template~Template>} #children\n\t\t */\n\n\t\t/**\n\t\t * DOM event listeners of this template.\n\t\t *\n\t\t * @member {Object} #eventListeners\n\t\t */\n\t}\n\n\t/**\n\t * Renders a DOM Node (`HTMLElement` or `Text`) out of the template.\n\t *\n\t * @see #apply\n\t *\n\t * @returns {HTMLElement|Text}\n\t */\n\trender() {\n\t\tconst node = this._renderNode( undefined, true );\n\n\t\tthis._isRendered = true;\n\n\t\treturn node;\n\t}\n\n\t/**\n\t * Applies the template to an existing DOM Node, either `HTMLElement` or `Text`.\n\t *\n\t * **Note:** No new DOM nodes (HTMLElement or Text) will be created. Applying extends attributes\n\t * ({@link module:ui/template~TemplateDefinition attributes}) and listeners ({@link module:ui/template~TemplateDefinition on}) only.\n\t *\n\t *\t\tconst element = document.createElement( 'div' );\n\t *\t\tconst bind = Template.bind( observableInstance, emitterInstance );\n\t *\n\t *\t\tnew Template( {\n\t *\t\t\tattrs: {\n\t *\t\t\t\tid: 'first-div',\n\t *\t\t\t\tclass: bind.to( 'divClass' )\n\t *\t\t\t},\n\t *\t\t\ton: {\n\t *\t\t\t\tclick: bind( 'elementClicked' ) // Will be fired by the observableInstance.\n\t *\t\t\t}\n\t *\t\t\tchildren: [\n\t *\t\t\t\t'Div text.'\n\t *\t\t\t]\n\t *\t\t} ).apply( element );\n\t *\n\t *\t\telement.outerHTML == \"<div id=\"first-div\" class=\"my-div\">Div text.</div>\"\n\t *\n\t * @see module:ui/template~Template#render\n\t * @param {Node} element Root element for the template to apply.\n\t */\n\tapply( node ) {\n\t\tif ( !node ) {\n\t\t\t/**\n\t\t\t * No DOM Node specified.\n\t\t\t *\n\t\t\t * @error ui-template-wrong-syntax\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'ui-template-wrong-node: No DOM Node specified.' );\n\t\t}\n\n\t\treturn this._renderNode( node );\n\t}\n\n\t/**\n\t * An entry point to the interface which allows binding DOM nodes to {@link module:utils/observablemixin~ObservableMixin}.\n\t * There are two types of bindings:\n\t *\n\t * * `HTMLElement` attributes or Text Node `textContent` can be synchronized with {@link module:utils/observablemixin~ObservableMixin}\n\t * instance attributes. See {@link module:ui/template~BindChain#to} and {@link module:ui/template~BindChain#if}.\n\t *\n\t * * DOM events fired on `HTMLElement` can be propagated through {@link module:utils/observablemixin~ObservableMixin}.\n\t * See {@link module:ui/template~BindChain#to}.\n\t *\n\t * @param {module:utils/observablemixin~ObservableMixin} observable An instance of ObservableMixin class.\n\t * @param {module:utils/emittermixin~EmitterMixin} emitter An instance of `Emitter` class. It listens\n\t * to `observable` attribute changes and DOM Events, depending on the binding. Usually {@link module:ui/view~View} instance.\n\t * @returns {module:ui/template~BindChain}\n\t */\n\tstatic bind( observable, emitter ) {\n\t\treturn {\n\t\t\tto( eventNameOrFunctionOrAttribute, callback ) {\n\t\t\t\treturn new TemplateToBinding( {\n\t\t\t\t\teventNameOrFunction: eventNameOrFunctionOrAttribute,\n\t\t\t\t\tattribute: eventNameOrFunctionOrAttribute,\n\t\t\t\t\tobservable, emitter, callback\n\t\t\t\t} );\n\t\t\t},\n\n\t\t\tif( attribute, valueIfTrue, callback ) {\n\t\t\t\treturn new TemplateIfBinding( {\n\t\t\t\t\tobservable, emitter, attribute, valueIfTrue, callback\n\t\t\t\t} );\n\t\t\t}\n\t\t};\n\t}\n\n\t/**\n\t * Extends {@link module:ui/template~Template} instance with additional content from {@link module:ui/template~TemplateDefinition}.\n\t *\n\t *\t\tconst bind = Template.bind( observable, emitterInstance );\n\t *\t\tconst instance = new Template( {\n\t *\t\t\ttag: 'p',\n\t *\t\t\tattributes: {\n\t *\t\t\t\tclass: 'a',\n\t *\t\t\t\tdata-x: bind.to( 'foo' )\n\t *\t\t\t},\n\t *\t\t\tchildren: [\n\t *\t\t\t\t{\n\t *\t\t\t\t\ttag: 'span',\n\t *\t\t\t\t\tattributes: {\n\t *\t\t\t\t\t\tclass: 'b'\n\t *\t\t\t\t\t},\n\t *\t\t\t\t\tchildren: [\n\t *\t\t\t\t\t\t'Span'\n\t *\t\t\t\t\t]\n\t *\t\t\t\t}\n\t *\t\t\t]\n\t *\t\t } );\n\t *\n\t *\t\t// Instance-level extension.\n\t *\t\tTemplate.extend( instance, {\n\t *\t\t\tattributes: {\n\t *\t\t\t\tclass: 'b',\n\t *\t\t\t\tdata-x: bind.to( 'bar' )\n\t *\t\t\t},\n\t *\t\t\tchildren: [\n\t *\t\t\t\t{\n\t *\t\t\t\t\tattributes: {\n\t *\t\t\t\t\t\tclass: 'c'\n\t *\t\t\t\t\t}\n\t *\t\t\t\t}\n\t *\t\t\t]\n\t *\t\t} );\n\t *\n\t *\t\t// Child extension.\n\t *\t\tTemplate.extend( instance.children.get( 0 ), {\n\t *\t\t\tattributes: {\n\t *\t\t\t\tclass: 'd'\n\t *\t\t\t}\n\t *\t\t} );\n\t *\n\t * the `instance.render().outerHTML` is\n\t *\n\t *\t\t<p class=\"a b\" data-x=\"{ observable.foo } { observable.bar }\">\n\t *\t\t\t<span class=\"b c d\">Span</span>\n\t *\t\t</p>\n\t *\n\t * @param {module:ui/template~Template} template Existing Template instance to be extended.\n\t * @param {module:ui/template~TemplateDefinition} def An extension to existing an template instance.\n\t */\n\tstatic extend( template, def ) {\n\t\tif ( template._isRendered ) {\n\t\t\t/**\n\t\t\t * Extending a template after rendering may not work as expected. To make sure\n\t\t\t * the {@link #extend extending} works for the rendered element, perform it\n\t\t\t * before {@link #render} is called.\n\t\t\t *\n\t\t\t * @error template-extend-render\n\t\t\t */\n\t\t\tlog.warn( 'template-extend-render: Attempting to extend a template which has already been rendered.' );\n\t\t}\n\n\t\textendTemplate( template, normalize( clone( def ) ) );\n\t}\n\n\t/**\n\t * Renders a DOM Node (either `HTMLElement` or `Text`) out of the template.\n\t *\n\t * @protected\n\t * @param {Node} applyNode If specified, this template will be applied to an existing DOM Node.\n\t * @param {Boolean} intoFragment If set, children are rendered into `DocumentFragment`.\n\t * @returns {HTMLElement|Text} A rendered Node.\n\t */\n\t_renderNode( applyNode, intoFragment ) {\n\t\tlet isInvalid;\n\n\t\tif ( applyNode ) {\n\t\t\t// When applying, a definition cannot have \"tag\" and \"text\" at the same time.\n\t\t\tisInvalid = this.tag && this.text;\n\t\t} else {\n\t\t\t// When rendering, a definition must have either \"tag\" or \"text\": XOR( this.tag, this.text ).\n\t\t\tisInvalid = this.tag ? this.text : !this.text;\n\t\t}\n\n\t\tif ( isInvalid ) {\n\t\t\t/**\n\t\t\t * Node definition cannot have \"tag\" and \"text\" properties at the same time.\n\t\t\t * Node definition must have either \"tag\" or \"text\" when rendering new Node.\n\t\t\t *\n\t\t\t * @error ui-template-wrong-syntax\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'ui-template-wrong-syntax: Node definition must have either \"tag\" or \"text\" when rendering new Node.' );\n\t\t}\n\n\t\treturn this.text ? this._renderText( applyNode ) : this._renderElement( applyNode, intoFragment );\n\t}\n\n\t/**\n\t * Renders an `HTMLElement` out of the template.\n\t *\n\t * @protected\n\t * @param {HTMLElement} applyElement If specified, this template will be applied to an existing `HTMLElement`.\n\t * @param {Boolean} intoFragment If set, children are rendered into `DocumentFragment`.\n\t * @returns {HTMLElement} A rendered `HTMLElement`.\n\t */\n\t_renderElement( applyElement, intoFragment ) {\n\t\tconst el = applyElement ||\n\t\t\tdocument.createElementNS( this.ns || xhtmlNs, this.tag );\n\n\t\tthis._renderAttributes( el );\n\n\t\t// Invoke children recursively.\n\t\tif ( intoFragment ) {\n\t\t\tconst docFragment = document.createDocumentFragment();\n\n\t\t\tthis._renderElementChildren( el, docFragment );\n\n\t\t\tel.appendChild( docFragment );\n\t\t} else {\n\t\t\tthis._renderElementChildren( el, el, !!applyElement );\n\t\t}\n\n\t\t// Setup DOM bindings event listeners.\n\t\tthis._setUpListeners( el );\n\n\t\treturn el;\n\t}\n\n\t/**\n\t * Renders a `Text` node out of {@link module:ui/template~Template#text}.\n\t *\n\t * @protected\n\t * @param {HTMLElement} textNode If specified, this template instance will be applied to an existing `Text` Node.\n\t * @returns {Text} A rendered `Text` node in DOM.\n\t */\n\t_renderText( textNode = document.createTextNode( '' ) ) {\n\t\t// Check if this Text Node is bound to Observable. Cases:\n\t\t//\t\t{ text: [ Template.bind( ... ).to( ... ) ] }\n\t\t//\t\t{ text: [ 'foo', Template.bind( ... ).to( ... ), ... ] }\n\t\tif ( hasTemplateBinding( this.text ) ) {\n\t\t\tthis._bindToObservable( this.text, textNode, getTextUpdater( textNode ) );\n\t\t}\n\n\t\t// Simply set text. Cases:\n\t\t// \t\t{ text: [ 'all', 'are', 'static' ] }\n\t\t// \t\t{ text: [ 'foo' ] }\n\t\telse {\n\t\t\ttextNode.textContent = this.text.join( '' );\n\t\t}\n\n\t\treturn textNode;\n\t}\n\n\t/**\n\t * Renders an `HTMLElement` attributes out of {@link module:ui/template~Template#attributes}.\n\t *\n\t * @protected\n\t * @param {HTMLElement} el `HTMLElement` which attributes are to be rendered.\n\t */\n\t_renderAttributes( el ) {\n\t\tlet attrName, attrValue, attrNs;\n\n\t\tif ( !this.attributes ) {\n\t\t\treturn;\n\t\t}\n\n\t\tfor ( attrName in this.attributes ) {\n\t\t\tattrValue = this.attributes[ attrName ];\n\n\t\t\t// Detect custom namespace:\n\t\t\t// \t\t{ class: { ns: 'abc', value: Template.bind( ... ).to( ... ) } }\n\t\t\tattrNs = isObject( attrValue[ 0 ] ) && attrValue[ 0 ].ns ? attrValue[ 0 ].ns : null;\n\n\t\t\t// Activate binding if one is found. Cases:\n\t\t\t// \t\t{ class: [ Template.bind( ... ).to( ... ) ] }\n\t\t\t// \t\t{ class: [ 'bar', Template.bind( ... ).to( ... ), 'baz' ] }\n\t\t\t// \t\t{ class: { ns: 'abc', value: Template.bind( ... ).to( ... ) } }\n\t\t\tif ( hasTemplateBinding( attrValue ) ) {\n\t\t\t\tthis._bindToObservable(\n\t\t\t\t\t// Normalize attributes with additional data like namespace:\n\t\t\t\t\t//\t\t{ class: { ns: 'abc', value: [ ... ] } }\n\t\t\t\t\tattrNs ? attrValue[ 0 ].value : attrValue,\n\t\t\t\t\tel,\n\t\t\t\t\tgetAttributeUpdater( el, attrName, attrNs )\n\t\t\t\t);\n\t\t\t}\n\n\t\t\t// Style attribute could be an Object so it needs to be parsed in a specific way.\n\t\t\t//\t\tstyle: {\n\t\t\t//\t\t\twidth: '100px',\n\t\t\t//\t\t\theight: Template.bind( ... ).to( ... )\n\t\t\t//\t\t}\n\t\t\telse if ( attrName == 'style' && typeof attrValue[ 0 ] !== 'string' ) {\n\t\t\t\tthis._renderStyleAttribute( attrValue[ 0 ], el );\n\t\t\t}\n\n\t\t\t// Otherwise simply set the static attribute.\n\t\t\t// \t\t{ class: [ 'foo' ] }\n\t\t\t// \t\t{ class: [ 'all', 'are', 'static' ] }\n\t\t\t// \t\t{ class: [ { ns: 'abc', value: [ 'foo' ] } ] }\n\t\t\telse {\n\t\t\t\tattrValue = attrValue\n\t\t\t\t\t// Retrieve \"values\" from { class: [ { ns: 'abc', value: [ ... ] } ] }\n\t\t\t\t\t.map( v => v ? ( v.value || v ) : v )\n\t\t\t\t\t// Flatten the array.\n\t\t\t\t\t.reduce( ( p, n ) => p.concat( n ), [] )\n\t\t\t\t\t// Convert into string.\n\t\t\t\t\t.reduce( arrayValueReducer, '' );\n\n\t\t\t\tif ( !isFalsy( attrValue ) ) {\n\t\t\t\t\tel.setAttributeNS( attrNs, attrName, attrValue );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Renders `style` attribute of an `HTMLElement` based on {@link module:ui/template~Template#attributes}.\n\t *\n\t * Style attribute is an {Object} with static values:\n\t *\n\t *\t\tattributes: {\n\t * \t\t\tstyle: {\n\t * \t\t\t\tcolor: 'red'\n\t * \t\t\t}\n\t * \t\t}\n\t *\n\t * or values bound to {@link module:ui/model~Model} properties:\n\t *\n\t *\t\tattributes: {\n\t * \t\t\tstyle: {\n\t * \t\t\t\tcolor: bind.to( ... )\n\t * \t\t\t}\n\t * \t\t}\n\t *\n\t * Note: `style` attribute is rendered without setting the namespace. It does not seem to be\n\t * needed.\n\t *\n\t * @private\n\t * @param {Object} styles module:ui/template~TemplateDefinition.attributes.styles Styles definition.\n\t * @param {HTMLElement} el `HTMLElement` which `style` attribute is rendered.\n\t */\n\t_renderStyleAttribute( styles, el ) {\n\t\tfor ( let styleName in styles ) {\n\t\t\tconst styleValue = styles[ styleName ];\n\n\t\t\t// style: {\n\t\t\t//\tcolor: bind.to( 'attribute' )\n\t\t\t// }\n\t\t\tif ( hasTemplateBinding( styleValue ) ) {\n\t\t\t\tthis._bindToObservable( [ styleValue ], el, getStyleUpdater( el, styleName ) );\n\t\t\t}\n\n\t\t\t// style: {\n\t\t\t//\tcolor: 'red'\n\t\t\t// }\n\t\t\telse {\n\t\t\t\tel.style[ styleName ] = styleValue;\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Recursively renders `HTMLElement` children from {@link module:ui/template~Template#children}.\n\t *\n\t * @protected\n\t * @param {HTMLElement} element The element which is being rendered.\n\t * @param {HTMLElement|DocumentFragment} container `HTMLElement` or `DocumentFragment`\n\t * into which children are being rendered. If `shouldApply == true`, then `container === element`.\n\t * @param {Boolean} shouldApply Traverse existing DOM structure only, don't modify DOM.\n\t */\n\t_renderElementChildren( element, container, shouldApply ) {\n\t\tlet childIndex = 0;\n\n\t\tfor ( let child of this.children ) {\n\t\t\tif ( isViewCollection( child ) ) {\n\t\t\t\tif ( !shouldApply ) {\n\t\t\t\t\tchild.setParent( element );\n\n\t\t\t\t\tfor ( let view of child ) {\n\t\t\t\t\t\tcontainer.appendChild( view.element );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} else if ( isView( child ) ) {\n\t\t\t\tif ( !shouldApply ) {\n\t\t\t\t\tcontainer.appendChild( child.element );\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\tif ( shouldApply ) {\n\t\t\t\t\tchild._renderNode( container.childNodes[ childIndex++ ] );\n\t\t\t\t} else {\n\t\t\t\t\tcontainer.appendChild( child.render() );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Activates ~Template#on listeners on a passed `HTMLElement`.\n\t *\n\t * @protected\n\t * @param {HTMLElement} el `HTMLElement` which is being rendered.\n\t */\n\t_setUpListeners( el ) {\n\t\tif ( !this.eventListeners ) {\n\t\t\treturn;\n\t\t}\n\n\t\tfor ( let key in this.eventListeners ) {\n\t\t\tconst [ domEvtName, domSelector ] = key.split( '@' );\n\n\t\t\tthis.eventListeners[ key ].forEach( schemaItem => {\n\t\t\t\tschemaItem.activateDomEventListener( el, domEvtName, domSelector );\n\t\t\t} );\n\t\t}\n\t}\n\n\t/**\n\t * For given {@link module:ui/template~TemplateValueSchema} containing {@link module:ui/template~TemplateBinding} it activates the\n\t * binding and sets its initial value.\n\t *\n\t * Note: {@link module:ui/template~TemplateValueSchema} can be for HTMLElement attributes or Text Node `textContent`.\n\t *\n\t * @protected\n\t * @param {module:ui/template~TemplateValueSchema} valueSchema\n\t * @param {Node} node DOM Node to be updated when {@link module:utils/observablemixin~ObservableMixin} changes.\n\t * @param {Function} domUpdater A function which updates DOM (like attribute or text).\n\t */\n\t_bindToObservable( valueSchema ) {\n\t\tvalueSchema\n\t\t\t// Filter \"falsy\" (false, undefined, null, '') value schema components out.\n\t\t\t.filter( item => !isFalsy( item ) )\n\t\t\t// Filter inactive bindings from schema, like static strings ('foo'), numbers (42), etc.\n\t\t\t.filter( item => item.observable )\n\t\t\t// Once only the actual binding are left, let the emitter listen to observable change:attribute event.\n\t\t\t// TODO: Reduce the number of listeners attached as many bindings may listen\n\t\t\t// to the same observable attribute.\n\t\t\t.forEach( templateBinding => templateBinding.activateAttributeListener( ...arguments ) );\n\n\t\t// Set initial values.\n\t\tsyncValueSchemaValue( ...arguments );\n\t}\n}\n\nmix( Template, EmitterMixin );\n\n/**\n * Describes a binding created by {@link module:ui/template~Template.bind} interface.\n *\n * @protected\n */\nexport class TemplateBinding {\n\t/**\n\t * Creates an instance of the {@link module:ui/template~TemplateBinding} class.\n\t *\n\t * @param {module:ui/template~TemplateDefinition} def The definition of the binding.\n\t */\n\tconstructor( def ) {\n\t\tObject.assign( this, def );\n\n\t\t/**\n\t\t * An observable instance of the binding. It provides the attribute\n\t\t * with the value or passes the event when a corresponding DOM event is fired.\n\t\t *\n\t\t * @member {module:utils/observablemixin~ObservableMixin} module:ui/template~TemplateBinding#observable\n\t\t */\n\n\t\t/**\n\t\t * An {@link module:utils/emittermixin~EmitterMixin} instance used by the binding\n\t\t * to (either):\n\t\t *\n\t\t * * listen to the attribute change in the {@link module:ui/template~TemplateBinding#observable},\n\t\t * * listen to the event in the DOM.\n\t\t *\n\t\t * @member {module:utils/emittermixin~EmitterMixin} module:ui/template~TemplateBinding#emitter\n\t\t */\n\n\t\t/**\n\t\t * The name of the attribute of {@link module:ui/template~TemplateBinding#observable} which is observed.\n\t\t *\n\t\t * @member {String} module:ui/template~TemplateBinding#attribute\n\t\t */\n\n\t\t/**\n\t\t * A custom function to process the value of {@link module:ui/template~TemplateBinding#attribute}.\n\t\t *\n\t\t * @member {Function} [module:ui/template~TemplateBinding#callback]\n\t\t */\n\t}\n\n\t/**\n\t * Returns the value of the binding, which is the value of {@link module:ui/template~TemplateBinding#attribute} in\n\t * {@link module:ui/template~TemplateBinding#observable}.\n\t *\n\t * @param {Node} [node] A native DOM node, passed to the custom {@link module:ui/template~TemplateBinding#callback}.\n\t * @returns {*} The value of {@link module:ui/template~TemplateBinding#attribute} in {@link module:ui/template~TemplateBinding#observable}.\n\t */\n\tgetValue( domNode ) {\n\t\tconst value = this.observable[ this.attribute ];\n\n\t\treturn this.callback ? this.callback( value, domNode ) : value;\n\t}\n\n\t/**\n\t * Activates the listener for the changes of {@link module:ui/template~TemplateBinding#attribute} in\n\t * {@link module:ui/template~TemplateBinding#observable}, which then updates the DOM with the aggregated\n\t * value of {@link module:ui/template~TemplateValueSchema}.\n\t *\n\t * For instance, the `class` attribute of the `Template` element can be be bound to\n\t * the observable `foo` attribute in `ObservableMixin` instance.\n\t *\n\t * @param {module:ui/template~TemplateValueSchema} valueSchema A full schema to generate an attribute or text in DOM.\n\t * @param {Node} node A native DOM node, which attribute or text is to be updated.\n\t * @param {Function} updater A DOM updater function used to update native DOM attribute or text.\n\t */\n\tactivateAttributeListener( valueSchema, node, updater ) {\n\t\tthis.emitter.listenTo( this.observable, 'change:' + this.attribute, () => {\n\t\t\tsyncValueSchemaValue( valueSchema, node, updater );\n\t\t} );\n\t}\n}\n\n/**\n * Describes either:\n *\n * * a binding to {@link module:utils/observablemixin~ObservableMixin}\n * * or a native DOM event binding\n *\n * created by {@link module:ui/template~BindChain#to} method.\n *\n * @protected\n */\nexport class TemplateToBinding extends TemplateBinding {\n\t/**\n\t * Activates the listener for the native DOM event, which when fired, is propagated by\n\t * the {@link module:ui/template~TemplateBinding#emitter}.\n\t *\n\t * @param {HTMLElement} element An element on which listening to the native DOM event.\n\t * @param {String} domEvtName A name of the native DOM event.\n\t * @param {String} [domSelector] A selector in DOM to filter delegated events.\n\t */\n\tactivateDomEventListener( el, domEvtName, domSelector ) {\n\t\tthis.emitter.listenTo( el, domEvtName, ( evt, domEvt ) => {\n\t\t\tif ( !domSelector || domEvt.target.matches( domSelector ) ) {\n\t\t\t\tif ( typeof this.eventNameOrFunction == 'function' ) {\n\t\t\t\t\tthis.eventNameOrFunction( domEvt );\n\t\t\t\t} else {\n\t\t\t\t\tthis.observable.fire( this.eventNameOrFunction, domEvt );\n\t\t\t\t}\n\t\t\t}\n\t\t} );\n\t}\n}\n\n/**\n * Describes a binding to {@link module:utils/observablemixin~ObservableMixin} created by {@link module:ui/template~BindChain#if}\n * method.\n *\n * @protected\n */\nexport class TemplateIfBinding extends TemplateBinding {\n\t/**\n\t * @inheritDoc\n\t */\n\tgetValue( domNode ) {\n\t\tconst value = super.getValue( domNode );\n\n\t\treturn isFalsy( value ) ? false : ( this.valueIfTrue || true );\n\t}\n\n\t/**\n\t * The value of the DOM attribute/text to be set if the {@link module:ui/template~TemplateBinding#attribute} in\n\t * {@link module:ui/template~TemplateBinding#observable} is `true`.\n\t *\n\t * @member {String} [module:ui/template~TemplateIfBinding#valueIfTrue]\n\t */\n}\n\n// Checks whether given {@link module:ui/template~TemplateValueSchema} contains a\n// {@link module:ui/template~TemplateBinding}.\n//\n// @param {module:ui/template~TemplateValueSchema} valueSchema\n// @returns {Boolean}\nfunction hasTemplateBinding( valueSchema ) {\n\tif ( !valueSchema ) {\n\t\treturn false;\n\t}\n\n\t// Normalize attributes with additional data like namespace:\n\t// \t\tclass: { ns: 'abc', value: [ ... ] }\n\tif ( valueSchema.value ) {\n\t\tvalueSchema = valueSchema.value;\n\t}\n\n\tif ( Array.isArray( valueSchema ) ) {\n\t\treturn valueSchema.some( hasTemplateBinding );\n\t} else if ( valueSchema instanceof TemplateBinding ) {\n\t\treturn true;\n\t}\n\n\treturn false;\n}\n\n// Assembles the value using {@link module:ui/template~TemplateValueSchema} and stores it in a form of\n// an Array. Each entry of an Array corresponds to one of {@link module:ui/template~TemplateValueSchema}\n// items.\n//\n// @param {module:ui/template~TemplateValueSchema} valueSchema\n// @param {Node} node DOM Node updated when {@link module:utils/observablemixin~ObservableMixin} changes.\n// @return {Array}\nfunction getValueSchemaValue( valueSchema, domNode ) {\n\treturn valueSchema.map( schemaItem => {\n\t\t// Process {@link module:ui/template~TemplateBinding} bindings.\n\t\tif ( schemaItem instanceof TemplateBinding ) {\n\t\t\treturn schemaItem.getValue( domNode );\n\t\t}\n\n\t\t// All static values like strings, numbers, and \"falsy\" values (false, null, undefined, '', etc.) just pass.\n\t\treturn schemaItem;\n\t} );\n}\n\n// A function executed each time bound Observable attribute changes, which updates DOM with a value\n// constructed from {@link module:ui/template~TemplateValueSchema}.\n//\n// @param {module:ui/template~TemplateValueSchema} valueSchema\n// @param {Node} node DOM Node updated when {@link module:utils/observablemixin~ObservableMixin} changes.\n// @param {Function} domUpdater A function which updates DOM (like attribute or text).\nfunction syncValueSchemaValue( valueSchema, domNode, domUpdater ) {\n\tlet value = getValueSchemaValue( valueSchema, domNode );\n\n\t// Check if valueSchema is a single Template.bind.if, like:\n\t//\t\t{ class: Template.bind.if( 'foo' ) }\n\tif ( valueSchema.length == 1 && valueSchema[ 0 ] instanceof TemplateIfBinding ) {\n\t\tvalue = value[ 0 ];\n\t} else {\n\t\tvalue = value.reduce( arrayValueReducer, '' );\n\t}\n\n\tif ( isFalsy( value ) ) {\n\t\tdomUpdater.remove();\n\t} else {\n\t\tdomUpdater.set( value );\n\t}\n}\n\n// Returns an object consisting of `set` and `remove` functions, which\n// can be used in the context of DOM Node to set or reset `textContent`.\n// @see module:ui/view~View#_bindToObservable\n//\n// @param {Node} node DOM Node to be modified.\n// @returns {Object}\nfunction getTextUpdater( node ) {\n\treturn {\n\t\tset( value ) {\n\t\t\tnode.textContent = value;\n\t\t},\n\n\t\tremove() {\n\t\t\tnode.textContent = '';\n\t\t}\n\t};\n}\n\n// Returns an object consisting of `set` and `remove` functions, which\n// can be used in the context of DOM Node to set or reset an attribute.\n// @see module:ui/view~View#_bindToObservable\n//\n// @param {Node} node DOM Node to be modified.\n// @param {String} attrName Name of the attribute to be modified.\n// @param {String} [ns=null] Namespace to use.\n// @returns {Object}\nfunction getAttributeUpdater( el, attrName, ns ) {\n\treturn {\n\t\tset( value ) {\n\t\t\tel.setAttributeNS( ns, attrName, value );\n\t\t},\n\n\t\tremove() {\n\t\t\tel.removeAttributeNS( ns, attrName );\n\t\t}\n\t};\n}\n\n// Returns an object consisting of `set` and `remove` functions, which\n// can be used in the context of CSSStyleDeclaration to set or remove a style.\n// @see module:ui/view~View#_bindToObservable\n//\n// @param {Node} node DOM Node to be modified.\n// @param {String} styleName Name of the style to be modified.\n// @returns {Object}\nfunction getStyleUpdater( el, styleName ) {\n\treturn {\n\t\tset( value ) {\n\t\t\tel.style[ styleName ] = value;\n\t\t},\n\n\t\tremove() {\n\t\t\tel.style[ styleName ] = null;\n\t\t}\n\t};\n}\n\n// Clones definition of the template.\n//\n// @param {module:ui/template~TemplateDefinition} def\n// @returns {module:ui/template~TemplateDefinition}\nfunction clone( def ) {\n\tconst clone = cloneDeepWith( def, value => {\n\t\t// Don't clone the `Template.bind`* bindings because of the references to Observable\n\t\t// and DomEmitterMixin instances inside, which would also be traversed and cloned by greedy\n\t\t// cloneDeepWith algorithm. There's no point in cloning Observable/DomEmitterMixins\n\t\t// along with the definition.\n\t\t//\n\t\t// Don't clone Template instances if provided as a child. They're simply #render()ed\n\t\t// and nothing should interfere.\n\t\t//\n\t\t// Also don't clone View instances if provided as a child of the Template. The template\n\t\t// instance will be extracted from the View during the normalization and there's no need\n\t\t// to clone it.\n\t\tif ( value && ( value instanceof TemplateBinding || isTemplate( value ) || isView( value ) || isViewCollection( value ) ) ) {\n\t\t\treturn value;\n\t\t}\n\t} );\n\n\treturn clone;\n}\n\n// Normalizes given {@link module:ui/template~TemplateDefinition}.\n//\n// See:\n//  * {@link normalizeAttributes}\n//  * {@link normalizeListeners}\n//  * {@link normalizePlainTextDefinition}\n//  * {@link normalizeTextDefinition}\n//\n// @param {module:ui/template~TemplateDefinition} def\n// @returns {module:ui/template~TemplateDefinition} Normalized definition.\nfunction normalize( def ) {\n\tif ( typeof def == 'string' ) {\n\t\tdef = normalizePlainTextDefinition( def );\n\t} else if ( def.text ) {\n\t\tnormalizeTextDefinition( def );\n\t}\n\n\tif ( def.on ) {\n\t\tdef.eventListeners = normalizeListeners( def.on );\n\n\t\t// Template mixes EmitterMixin, so delete #on to avoid collision.\n\t\tdelete def.on;\n\t}\n\n\tif ( !def.text ) {\n\t\tif ( def.attributes ) {\n\t\t\tnormalizeAttributes( def.attributes );\n\t\t}\n\n\t\tconst children = new Collection();\n\n\t\tif ( def.children ) {\n\t\t\tif ( isViewCollection( def.children ) ) {\n\t\t\t\tchildren.add( def.children );\n\t\t\t} else {\n\t\t\t\tfor ( let child of def.children ) {\n\t\t\t\t\tif ( isTemplate( child ) || isView( child ) ) {\n\t\t\t\t\t\tchildren.add( child );\n\t\t\t\t\t} else {\n\t\t\t\t\t\tchildren.add( new Template( child ) );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\tdef.children = children;\n\t}\n\n\treturn def;\n}\n\n// Normalizes \"attributes\" section of {@link module:ui/template~TemplateDefinition}.\n//\n//\t\tattributes: {\n//\t\t\ta: 'bar',\n//\t\t\tb: {@link module:ui/template~TemplateBinding},\n//\t\t\tc: {\n//\t\t\t\tvalue: 'bar'\n//\t\t\t}\n//\t\t}\n//\n// becomes\n//\n//\t\tattributes: {\n//\t\t\ta: [ 'bar' ],\n//\t\t\tb: [ {@link module:ui/template~TemplateBinding} ],\n//\t\t\tc: {\n//\t\t\t\tvalue: [ 'bar' ]\n//\t\t\t}\n//\t\t}\n//\n// @param {Object} attrs\nfunction normalizeAttributes( attrs ) {\n\tfor ( let a in attrs ) {\n\t\tif ( attrs[ a ].value ) {\n\t\t\tattrs[ a ].value = [].concat( attrs[ a ].value );\n\t\t}\n\n\t\tarrayify( attrs, a );\n\t}\n}\n\n// Normalizes \"on\" section of {@link module:ui/template~TemplateDefinition}.\n//\n//\t\ton: {\n//\t\t\ta: 'bar',\n//\t\t\tb: {@link module:ui/template~TemplateBinding},\n//\t\t\tc: [ {@link module:ui/template~TemplateBinding}, () => { ... } ]\n//\t\t}\n//\n// becomes\n//\n//\t\ton: {\n//\t\t\ta: [ 'bar' ],\n//\t\t\tb: [ {@link module:ui/template~TemplateBinding} ],\n//\t\t\tc: [ {@link module:ui/template~TemplateBinding}, () => { ... } ]\n//\t\t}\n//\n// @param {Object} listeners\n// @returns {Object} Object containing normalized listeners.\nfunction normalizeListeners( listeners ) {\n\tfor ( let l in listeners ) {\n\t\tarrayify( listeners, l );\n\t}\n\n\treturn listeners;\n}\n\n// Normalizes \"string\" {@link module:ui/template~TemplateDefinition}.\n//\n//\t\t\"foo\"\n//\n// becomes\n//\n//\t\t{ text: [ 'foo' ] },\n//\n// @param {String} def\n// @returns {module:ui/template~TemplateDefinition} Normalized template definition.\nfunction normalizePlainTextDefinition( def ) {\n\treturn {\n\t\ttext: [ def ]\n\t};\n}\n\n// Normalizes text {@link module:ui/template~TemplateDefinition}.\n//\n//\t\tchildren: [\n//\t\t\t{ text: 'def' },\n//\t\t\t{ text: {@link module:ui/template~TemplateBinding} }\n//\t\t]\n//\n// becomes\n//\n//\t\tchildren: [\n//\t\t\t{ text: [ 'def' ] },\n//\t\t\t{ text: [ {@link module:ui/template~TemplateBinding} ] }\n//\t\t]\n//\n// @param {module:ui/template~TemplateDefinition} def\nfunction normalizeTextDefinition( def ) {\n\tif ( !Array.isArray( def.text ) ) {\n\t\tdef.text = [ def.text ];\n\t}\n}\n\n// Wraps an entry in Object in an Array, if not already one.\n//\n//\t\t{\n//\t\t\tx: 'y',\n//\t\t\ta: [ 'b' ]\n//\t\t}\n//\n// becomes\n//\n//\t\t{\n//\t\t\tx: [ 'y' ],\n//\t\t\ta: [ 'b' ]\n//\t\t}\n//\n// @param {Object} obj\n// @param {String} key\nfunction arrayify( obj, key ) {\n\tif ( !Array.isArray( obj[ key ] ) ) {\n\t\tobj[ key ] = [ obj[ key ] ];\n\t}\n}\n\n// A helper which concatenates the value avoiding unwanted\n// leading white spaces.\n//\n// @param {String} prev\n// @param {String} cur\n// @returns {String}\nfunction arrayValueReducer( prev, cur ) {\n\tif ( isFalsy( cur ) ) {\n\t\treturn prev;\n\t} else if ( isFalsy( prev ) )  {\n\t\treturn cur;\n\t} else {\n\t\treturn `${prev} ${cur}`;\n\t}\n}\n\n// Extends one object defined in the following format:\n//\n//\t\t{\n//\t\t\tkey1: [Array1],\n//\t\t\tkey2: [Array2],\n//\t\t\t...\n//\t\t\tkeyN: [ArrayN]\n//\t\t}\n//\n// with another object of the same data format.\n//\n// @param {Object} obj Base object.\n// @param {Object} ext Object extending base.\n// @returns {String}\nfunction extendObjectValueArray( obj, ext ) {\n\tfor ( let a in ext ) {\n\t\tif ( obj[ a ] ) {\n\t\t\tobj[ a ].push( ...ext[ a ] );\n\t\t} else {\n\t\t\tobj[ a ] = ext[ a ];\n\t\t}\n\t}\n}\n\n// A helper for {@link module:ui/template~Template#extend}. Recursively extends {@link module:ui/template~Template} instance\n// with content from {module:ui/template~TemplateDefinition}. See {@link module:ui/template~Template#extend} to learn more.\n//\n// @param {module:ui/template~Template} def A template instance to be extended.\n// @param {module:ui/template~TemplateDefinition} def A definition which is to extend the template instance.\nfunction extendTemplate( template, def ) {\n\tif ( def.attributes ) {\n\t\tif ( !template.attributes ) {\n\t\t\ttemplate.attributes = {};\n\t\t}\n\n\t\textendObjectValueArray( template.attributes, def.attributes );\n\t}\n\n\tif ( def.eventListeners ) {\n\t\tif ( !template.eventListeners ) {\n\t\t\ttemplate.eventListeners = {};\n\t\t}\n\n\t\textendObjectValueArray( template.eventListeners, def.eventListeners );\n\t}\n\n\tif ( def.text ) {\n\t\ttemplate.text.push( ...def.text );\n\t}\n\n\tif ( def.children && def.children.length ) {\n\t\tif ( template.children.length != def.children.length ) {\n\t\t\t/**\n\t\t\t * The number of children in extended definition does not match.\n\t\t\t *\n\t\t\t * @error ui-template-extend-children-mismatch\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'ui-template-extend-children-mismatch: The number of children in extended definition does not match.' );\n\t\t}\n\n\t\tlet childIndex = 0;\n\n\t\tfor ( let childDef of def.children ) {\n\t\t\textendTemplate( template.children.get( childIndex++ ), childDef );\n\t\t}\n\t}\n}\n\n// Checks if value is \"falsy\".\n// Note: 0 (Number) is not \"falsy\" in this context.\n//\n// @private\n// @param {*} value Value to be checked.\nfunction isFalsy( value ) {\n\treturn !value && value !== 0;\n}\n\n// Checks if the item is an instance of {@link module:ui/view~View}\n//\n// @private\n// @param {*} value Value to be checked.\nfunction isView( item ) {\n\treturn item instanceof View;\n}\n\n// Checks if the item is an instance of {@link module:ui/template~Template}\n//\n// @private\n// @param {*} value Value to be checked.\nfunction isTemplate( item ) {\n\treturn item instanceof Template;\n}\n\n// Checks if the item is an instance of {@link module:ui/viewcollection~ViewCollection}\n//\n// @private\n// @param {*} value Value to be checked.\nfunction isViewCollection( item ) {\n\treturn item instanceof ViewCollection;\n}\n\n/**\n * A definition of {@link module:ui/template~Template}.\n * See: {@link module:ui/template~TemplateValueSchema}.\n *\n *\t\tnew Template( {\n *\t\t\ttag: 'p',\n *\t\t\tchildren: [\n *\t\t\t\t{\n *\t\t\t\t\ttag: 'span',\n *\t\t\t\t\tattributes: { ... },\n *\t\t\t\t\tchildren: [ ... ],\n *\t\t\t\t\t...\n *\t\t\t\t},\n *\t\t\t\t{\n *\t\t\t\t\ttext: 'static–text'\n *\t\t\t\t},\n *\t\t\t\t'also-static–text',\n *\t\t\t\t<{@link module:ui/view~View} instance>\n *\t\t\t\t<{@link module:ui/template~Template} instance>\n *\t\t\t\t...\n *\t\t\t],\n *\t\t\tattributes: {\n *\t\t\t\tclass: {@link module:ui/template~TemplateValueSchema},\n *\t\t\t\tid: {@link module:ui/template~TemplateValueSchema},\n *\t\t\t\tstyle: {@link module:ui/template~TemplateValueSchema}\n *\t\t\t\t...\n *\t\t\t},\n *\t\t\ton: {\n *\t\t\t\t'click': {@link module:ui/template~TemplateListenerSchema}\n *\t\t\t\t'keyup@.some-class': {@link module:ui/template~TemplateListenerSchema},\n *\t\t\t\t...\n *\t\t\t}\n *\t\t} );\n *\n *\t\t// An entire view collection can be used as a child in the definition.\n *\t\tnew Template( {\n *\t\t\ttag: 'p',\n *\t\t\tchildren: <{@link module:ui/viewcollection~ViewCollection} instance>\n *\t\t} );\n *\n * @typedef module:ui/template~TemplateDefinition\n * @type Object\n * @property {String} tag\n * @property {Array.<module:ui/template~TemplateDefinition>} [children]\n * @property {Object.<String,module:ui/template~TemplateValueSchema>} [attributes]\n * @property {String|module:ui/template~TemplateValueSchema|Array.<String|module:ui/template~TemplateValueSchema>} [text]\n * @property {Object.<String,module:ui/template~TemplateListenerSchema>} [on]\n */\n\n/**\n * Describes a value of HTMLElement attribute or `textContent`. See:\n *  * {@link module:ui/template~TemplateDefinition},\n *  * {@link module:ui/template~Template.bind},\n *\n *\t\tconst bind = Template.bind( observableInstance, emitterInstance );\n *\n *\t\tnew Template( {\n *\t\t\ttag: 'p',\n *\t\t\tattributes: {\n *\t\t\t\t// Plain String schema.\n *\t\t\t\tclass: 'static-text'\n *\n *\t\t\t\t// Object schema, an `ObservableMixin` binding.\n *\t\t\t\tclass: bind.to( 'foo' )\n *\n *\t\t\t\t// Array schema, combines the above.\n *\t\t\t\tclass: [\n *\t\t\t\t\t'static-text',\n *\t\t\t\t\tbind.to( 'bar', () => { ... } )\n *\t\t\t\t],\n *\n *\t\t\t\t// Array schema, with custom namespace.\n *\t\t\t\tclass: {\n *\t\t\t\t\tns: 'http://ns.url',\n *\t\t\t\t\tvalue: [\n *\t\t\t\t\t\tbind.if( 'baz', 'value-when-true' )\n *\t\t\t\t\t\t'static-text'\n *\t\t\t\t\t]\n *\t\t\t\t},\n *\n *\t\t\t\t// Object literal schema, specific for styles.\n *\t\t\t\tstyle: {\n *\t\t\t\t\tcolor: 'red',\n *\t\t\t\t\tbackgroundColor: bind.to( 'qux', () => { ... } )\n *\t\t\t\t}\n *\t\t\t}\n *\t\t} );\n *\n * @typedef module:ui/template~TemplateValueSchema\n * @type {Object|String|Array}\n */\n\n/**\n * Describes a listener attached to HTMLElement. See: {@link module:ui/template~TemplateDefinition}.\n *\n *\t\tnew Template( {\n *\t\t\ttag: 'p',\n *\t\t\ton: {\n *\t\t\t\t// Plain String schema.\n *\t\t\t\tclick: 'clicked'\n *\n *\t\t\t\t// Object schema, an `ObservableMixin` binding.\n *\t\t\t\tclick: {@link module:ui/template~TemplateBinding}\n *\n *\t\t\t\t// Array schema, combines the above.\n *\t\t\t\tclick: [\n *\t\t\t\t\t'clicked',\n *\t\t\t\t\t{@link module:ui/template~TemplateBinding}\n *\t\t\t\t],\n *\n *\t\t\t\t// Array schema, with custom callback.\n *\t\t\t\t// Note: It will work for \"click\" event on class=\".foo\" children only.\n *\t\t\t\t'click@.foo': {\n *\t\t\t\t\t'clicked',\n *\t\t\t\t\t{@link module:ui/template~TemplateBinding},\n *\t\t\t\t\t() => { ... }\n *\t\t\t\t}\n *\t\t\t}\n *\t\t} );\n *\n * @typedef module:ui/template~TemplateListenerSchema\n * @type {Object|String|Array}\n */\n\n/**\n * The type of {@link ~Template.bind}'s return value.\n *\n * @interface module:ui/template~BindChain\n */\n\n/**\n * Binds {@link module:utils/observablemixin~ObservableMixin} instance to:\n *\n * * HTMLElement attribute or Text Node `textContent` so remains in sync with the Observable when it changes:\n * * HTMLElement DOM event, so the DOM events are propagated through Observable.\n *\n *\t\tconst bind = Template.bind( observableInstance, emitterInstance );\n *\n *\t\tnew Template( {\n *\t\t\ttag: 'p',\n *\t\t\tattributes: {\n *\t\t\t\t// class=\"...\" attribute gets bound to `observableInstance#a`\n *\t\t\t\t'class': bind.to( 'a' )\n *\t\t\t},\n *\t\t\tchildren: [\n *\t\t\t\t// <p>...</p> gets bound to `observableInstance#b`; always `toUpperCase()`.\n *\t\t\t\t{ text: bind.to( 'b', ( value, node ) => value.toUpperCase() ) }\n *\t\t\t],\n *\t\t\ton: {\n *\t\t\t\tclick: [\n *\t\t\t\t\t// \"clicked\" event will be fired on `observableInstance` when \"click\" fires in DOM.\n *\t\t\t\t\tbind.to( 'clicked' ),\n *\n *\t\t\t\t\t// A custom callback function will be executed when \"click\" fires in DOM.\n *\t\t\t\t\tbind.to( () => {\n *\t\t\t\t\t\t...\n *\t\t\t\t\t} )\n *\t\t\t\t]\n *\t\t\t}\n *\t\t} ).render();\n *\n *\t\tconst bind = Template.bind( observableInstance, emitterInstance );\n *\n *\t\tnew Template( {\n *\t\t\ttag: 'p',\n *\t\t} ).render();\n *\n * @method #to\n * @param {String|Function} eventNameOrFunctionOrAttribute An attribute name of\n * {@link module:utils/observablemixin~ObservableMixin} or a DOM event name or an event callback.\n * @param {Function} [callback] Allows processing of the value. Accepts `Node` and `value` as arguments.\n * @return {module:ui/template~TemplateBinding}\n */\n\n/**\n * Binds {@link module:utils/observablemixin~ObservableMixin} to HTMLElement attribute or Text Node `textContent`\n * so remains in sync with the Model when it changes. Unlike {@link module:ui/template~BindChain#to},\n * it controls the presence of the attribute/`textContent` depending on the \"falseness\" of\n * {@link module:utils/observablemixin~ObservableMixin} attribute.\n *\n *\t\tconst bind = Template.bind( observableInstance, emitterInstance );\n *\n *\t\tnew Template( {\n *\t\t\ttag: 'input',\n *\t\t\tattributes: {\n *\t\t\t\t// <input checked> when `observableInstance#a` is not undefined/null/false/''\n *\t\t\t\t// <input> when `observableInstance#a` is undefined/null/false\n *\t\t\t\tchecked: bind.if( 'a' )\n *\t\t\t},\n *\t\t\tchildren: [\n *\t\t\t\t{\n *\t\t\t\t\t// <input>\"b-is-not-set\"</input> when `observableInstance#b` is undefined/null/false/''\n *\t\t\t\t\t// <input></input> when `observableInstance#b` is not \"falsy\"\n *\t\t\t\t\ttext: bind.if( 'b', 'b-is-not-set', ( value, node ) => !value )\n *\t\t\t\t}\n *\t\t\t]\n *\t\t} ).render();\n *\n * @method #if\n * @param {String} attribute An attribute name of {@link module:utils/observablemixin~ObservableMixin} used in the binding.\n * @param {String} [valueIfTrue] Value set when {@link module:utils/observablemixin~ObservableMixin} attribute is not\n * undefined/null/false/''.\n * @param {Function} [callback] Allows processing of the value. Accepts `Node` and `value` as arguments.\n * @return {module:ui/template~TemplateBinding}\n */\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-ui/src/template.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/view\n */\n\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\nimport ViewCollection from './viewcollection';\nimport Template from './template';\nimport DomEmmiterMixin from '@ckeditor/ckeditor5-utils/src/dom/emittermixin';\nimport ObservableMixin from '@ckeditor/ckeditor5-utils/src/observablemixin';\nimport Collection from '@ckeditor/ckeditor5-utils/src/collection';\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\nimport isIterable from '@ckeditor/ckeditor5-utils/src/isiterable';\n\n/**\n * Basic View class.\n *\n *\t\tclass SampleView extends View {\n *\t\t\tconstructor( locale ) {\n *\t\t\t\tsuper( locale );\n *\n *\t\t\t\tthis.template = new Template( {\n *\t\t\t\t\ttag: 'p',\n *\t\t\t\t\tchildren: [\n *\t\t\t\t\t\t'Hello',\n *\t\t\t\t\t\t{\n *\t\t\t\t\t\t\ttag: 'b',\n *\t\t\t\t\t\t\tchildren: [\n *\t\t\t\t\t\t\t\t'world!'\n *\t\t\t\t\t\t\t]\n *\t\t\t\t\t\t}\n *\t\t\t\t\t],\n *\t\t\t\t\tattributes: {\n *\t\t\t\t\t\tclass: 'foo'\n *\t\t\t\t\t}\n *\t\t\t\t} );\n *\t\t\t}\n *\t\t}\n *\n *\t\tconst view = new SampleView( locale );\n *\n *\t\tview.init().then( () => {\n *\t\t\t// Will append <p class=\"foo\">Hello<b>world</b></p>\n *\t\t\tdocument.body.appendChild( view.element );\n *\t\t} );\n *\n * @mixes module:utils/dom/emittermixin~EmmiterMixin\n * @mixes module:utils/observablemixin~ObservableMixin\n */\nexport default class View {\n\t/**\n\t * Creates an instance of the {@link module:ui/view~View} class.\n\t *\n\t * @param {module:utils/locale~Locale} [locale] The {@link module:core/editor/editor~Editor editor's locale} instance.\n\t */\n\tconstructor( locale ) {\n\t\t/**\n\t\t * A set of tools to localize the user interface. See {@link module:core/editor/editor~Editor}.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:utils/locale~Locale}\n\t\t */\n\t\tthis.locale = locale;\n\n\t\t/**\n\t\t * Shorthand for {@link module:utils/locale~Locale#t}.\n\t\t *\n\t\t * Note: If locale instance hasn't been passed to the view this method may not be available.\n\t\t *\n\t\t * @see module:utils/locale~Locale#t\n\t\t * @method\n\t\t */\n\t\tthis.t = locale && locale.t;\n\n\t\t/**\n\t\t * Set `true` after {@link #init}, which can be asynchronous.\n\t\t *\n\t\t * @readonly\n\t\t * @observable\n\t\t * @member {Boolean} #ready\n\t\t */\n\t\tthis.set( 'ready', false );\n\n\t\t/**\n\t\t * Collections registered with {@link #createCollection}.\n\t\t *\n\t\t * @protected\n\t\t * @member {Set.<module:ui/viewcollection~ViewCollection>}\n\t\t */\n\t\tthis._viewCollections = new Collection();\n\n\t\t/**\n\t\t * A collection of view instances, which have been added directly\n\t\t * into the {@link module:ui/template~Template#children}.\n\t\t *\n\t\t * @protected\n\t\t * @member {module:ui/viewcollection~ViewCollection}\n\t\t */\n\t\tthis._unboundChildren = this.createCollection();\n\n\t\t// Pass parent locale to its children.\n\t\tthis._viewCollections.on( 'add', ( evt, collection ) => {\n\t\t\tcollection.locale = locale;\n\t\t} );\n\n\t\t/**\n\t\t * Template of this view.\n\t\t *\n\t\t * @member {module:ui/template~Template} #template\n\t\t */\n\n\t\t/**\n\t\t * Element of this view.\n\t\t *\n\t\t * @private\n\t\t * @member {HTMLElement} #_element\n\t\t */\n\n\t\t/**\n\t\t * Cached {@link module:ui/template~Template} binder object specific for this instance.\n\t\t * See {@link #bindTemplate}.\n\t\t *\n\t\t * @private\n\t\t * @member {Object} #_bindTemplate\n\t\t */\n\t}\n\n\t/**\n\t * Element of this view. The element is rendered on first reference\n\t * using {@link #template} definition.\n\t *\n\t * @type {HTMLElement}\n\t */\n\tget element() {\n\t\tif ( this._element ) {\n\t\t\treturn this._element;\n\t\t}\n\n\t\t// No template means no element (a virtual view).\n\t\tif ( !this.template ) {\n\t\t\treturn null;\n\t\t}\n\n\t\tthis._addTemplateChildren();\n\n\t\treturn ( this._element = this.template.render() );\n\t}\n\n\t/**\n\t * @type {HTMLElement}\n\t */\n\tset element( el ) {\n\t\tthis._element = el;\n\t}\n\n\t/**\n\t * Shorthand for {@link module:ui/template~Template.bind}, bound to {@link ~View} on the first access.\n\t *\n\t * Cached {@link module:ui/template~Template.bind} object is stored in {@link #_bindTemplate}.\n\t *\n\t * @method #bindTemplate\n\t */\n\tget bindTemplate() {\n\t\tif ( this._bindTemplate ) {\n\t\t\treturn this._bindTemplate;\n\t\t}\n\n\t\treturn ( this._bindTemplate = Template.bind( this, this ) );\n\t}\n\n\t/**\n\t * Creates a new collection of views, which can be used in this view instance,\n\t * e.g. as a member of {@link module:ui/template~TemplateDefinition TemplateDefinition} children.\n\t *\n\t *\t\tclass SampleView extends View {\n\t *\t\t\tconstructor( locale ) {\n\t *\t\t\t\tsuper( locale );\n\t *\n\t *\t\t\t\tthis.items = this.createCollection();\n \t *\n\t *\t\t\t\tthis.template = new Template( {\n\t *\t\t\t\t\ttag: 'p',\n\t *\n\t *\t\t\t\t\t// `items` collection will render here.\n\t *\t\t\t\t\tchildren: this.items\n\t *\t\t\t\t} );\n\t *\t\t\t}\n\t *\t\t}\n\t *\n\t *\t\tconst view = new SampleView( locale );\n\t *\t\tconst anotherView = new AnotherSampleView( locale );\n\t *\n\t *\t\tview.init().then( () => {\n\t *\t\t\t// Will append <p></p>\n\t *\t\t\tdocument.body.appendChild( view.element );\n\t *\n\t *\t\t\t// `anotherView` becomes a child of the view, which is reflected in DOM\n\t *\t\t\t// <p><anotherView#element></p>\n\t *\t\t\tview.items.add( anotherView );\n\t *\t\t} );\n\t *\n\t * @returns {module:ui/viewcollection~ViewCollection} A new collection of view instances.\n\t */\n\tcreateCollection() {\n\t\tconst collection = new ViewCollection();\n\n\t\tthis._viewCollections.add( collection );\n\n\t\treturn collection;\n\t}\n\n\t/**\n\t * Registers a new child view under this view instance. Once registered, a child\n\t * view is managed by its parent, including initialization ({@link #init})\n\t * and destruction ({@link #destroy}).\n\t *\n\t *\t\tclass SampleView extends View {\n\t *\t\t\tconstructor( locale ) {\n\t *\t\t\t\tsuper( locale );\n\t *\n\t *\t\t\t\tthis.childA = new SomeChildView( locale );\n\t *\t\t\t\tthis.childB = new SomeChildView( locale );\n\t *\n\t *\t\t\t\tthis.template = new Template( { tag: 'p' } );\n\t *\n\t *\t\t\t\t// Register children.\n\t *\t\t\t\tthis.addChildren( [ this.childA, this.childB ] );\n\t *\t\t\t}\n\t *\n\t *\t\t\tinit() {\n\t *\t\t\t\tthis.element.appendChild( this.childA.element );\n\t *\t\t\t\tthis.element.appendChild( this.childB.element );\n\t *\n\t *\t\t\t\treturn super.init();\n\t *\t\t\t}\n\t *\t\t}\n\t *\n\t *\t\tconst view = new SampleView( locale );\n\t *\n\t *\t\tview.init().then( () => {\n\t *\t\t\t// Will append <p><childA#element><b></b><childB#element></p>\n\t *\t\t\tdocument.body.appendChild( view.element );\n\t *\t\t} );\n\t *\n\t * **Note**: There's no need to add child views if they're used in the\n\t * {@link #template} explicitly:\n\t *\n\t *\t\tclass SampleView extends View {\n\t *\t\t\tconstructor( locale ) {\n\t *\t\t\t\tsuper( locale );\n\t *\n\t *\t\t\t\tthis.childA = new SomeChildView( locale );\n\t *\t\t\t\tthis.childB = new SomeChildView( locale );\n\t *\n\t *\t\t\t\tthis.template = new Template( {\n\t *\t\t\t\t\ttag: 'p',\n\t *\n \t *\t\t\t\t\t// These children will be added automatically. There's no\n \t *\t\t\t\t\t// need to call {@link #addChildren} for any of them.\n\t *\t\t\t\t\tchildren: [ this.childA, this.childB ]\n\t *\t\t\t\t} );\n\t *\t\t\t}\n\t *\n\t *\t\t\t...\n\t *\t\t}\n\t *\n\t * @param {module:ui/view~View|Iterable.<module:ui/view~View>} children Children views to be registered.\n\t */\n\taddChildren( children ) {\n\t\tif ( !isIterable( children ) ) {\n\t\t\tchildren = [ children ];\n\t\t}\n\n\t\tfor ( let child of children ) {\n\t\t\tthis._unboundChildren.add( child );\n\t\t}\n\t}\n\n\t/**\n\t * Initializes the view and child views located in {@link #_viewCollections}.\n\t *\n\t * @returns {Promise} A Promise resolved when the initialization process is finished.\n\t */\n\tinit() {\n\t\tif ( this.ready ) {\n\t\t\t/**\n\t\t\t * This View has already been initialized.\n\t\t\t *\n\t\t\t * @error ui-view-init-reinit\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'ui-view-init-reinit: This View has already been initialized.' );\n\t\t}\n\n\t\treturn Promise.resolve()\n\t\t\t// Initialize collections in #_viewCollections.\n\t\t\t.then( () => {\n\t\t\t\treturn Promise.all( this._viewCollections.map( c => c.init() ) );\n\t\t\t} )\n\t\t\t// Spread the word that this view is ready!\n\t\t\t.then( () => {\n\t\t\t\tthis.ready = true;\n\t\t\t} );\n\t}\n\n\t/**\n\t * Destroys the view instance and child views located in {@link #_viewCollections}.\n\t *\n\t * @returns {Promise} A Promise resolved when the destruction process is finished.\n\t */\n\tdestroy() {\n\t\tthis.stopListening();\n\n\t\tconst promises = this._viewCollections.map( c => c.destroy() );\n\n\t\tthis._unboundChildren.clear();\n\t\tthis._viewCollections.clear();\n\n\t\tif ( this.element ) {\n\t\t\tthis.element.remove();\n\t\t}\n\n\t\tthis.element = this.template = this.locale = this.t =\n\t\t\tthis._viewCollections = this._unboundChildren = null;\n\n\t\treturn Promise.all( promises );\n\t}\n\n\t/**\n\t * Recursively traverses {@link #template} in search of {@link module:ui/view~View}\n\t * instances and automatically registers them using {@link #addChildren} method.\n\t *\n\t * @protected\n\t */\n\t_addTemplateChildren() {\n\t\tconst search = ( def ) => {\n\t\t\tif ( def.children ) {\n\t\t\t\tfor ( let defOrView of def.children ) {\n\t\t\t\t\tif ( defOrView instanceof View ) {\n\t\t\t\t\t\tthis.addChildren( defOrView );\n\t\t\t\t\t} else {\n\t\t\t\t\t\tsearch( defOrView );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t};\n\n\t\tsearch( this.template );\n\t}\n}\n\nmix( View, DomEmmiterMixin );\nmix( View, ObservableMixin );\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-ui/src/view.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/emittermixin\n */\n\nimport EventInfo from './eventinfo';\nimport uid from './uid';\nimport priorities from './priorities';\n\nconst _listeningTo = Symbol( 'listeningTo' );\nconst _emitterId = Symbol( 'emitterId' );\n\n/**\n * Mixin that injects the events API into its host.\n *\n * @mixin EmitterMixin\n * @implements module:utils/emittermixin~Emitter\n */\nconst EmitterMixin = {\n\t/**\n\t * Registers a callback function to be executed when an event is fired. Events can be grouped in namespaces using `:`.\n\t * When namespaced event is fired, it additionaly fires all callbacks for that namespace.\n\t *\n\t *\t\tmyEmitter.on( 'myGroup', genericCallback );\n\t *\t\tmyEmitter.on( 'myGroup:myEvent', specificCallback );\n\t *\t\tmyEmitter.fire( 'myGroup' ); // genericCallback is fired.\n\t *\t\tmyEmitter.fire( 'myGroup:myEvent' ); // both genericCallback and specificCallback are fired.\n\t *\t\tmyEmitter.fire( 'myGroup:foo' ); // genericCallback is fired even though there are no callbacks for \"foo\".\n\t *\n\t * @method #on\n\t * @param {String} event The name of the event.\n\t * @param {Function} callback The function to be called on event.\n\t * @param {Object} [options={}] Additional options.\n\t * @param {module:utils/priorities~PriorityString|Number} [options.priority='normal'] The priority of this event callback. The higher\n\t * the priority value the sooner the callback will be fired. Events having the same priority are called in the\n\t * order they were added.\n\t * @param {Object} [options.context] The object that represents `this` in the callback. Defaults to the object firing the event.\n\t */\n\ton( event, callback, options = {} ) {\n\t\tcreateEventNamespace( this, event );\n\t\tconst lists = getCallbacksListsForNamespace( this, event );\n\t\tconst priority = priorities.get( options.priority );\n\n\t\tcallback = {\n\t\t\tcallback: callback,\n\t\t\tcontext: options.context || this,\n\t\t\tpriority: priority\n\t\t};\n\n\t\t// Add the callback to all callbacks list.\n\t\tfor ( let callbacks of lists ) {\n\t\t\t// Add the callback to the list in the right priority position.\n\t\t\tlet added = false;\n\n\t\t\tfor ( let i = 0; i < callbacks.length; i++ ) {\n\t\t\t\tif ( callbacks[ i ].priority < priority ) {\n\t\t\t\t\tcallbacks.splice( i, 0, callback );\n\t\t\t\t\tadded = true;\n\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Add at the end, if right place was not found.\n\t\t\tif ( !added ) {\n\t\t\t\tcallbacks.push( callback );\n\t\t\t}\n\t\t}\n\t},\n\n\t/**\n\t * Registers a callback function to be executed on the next time the event is fired only. This is similar to\n\t * calling {@link #on} followed by {@link #off} in the callback.\n\t *\n\t * @method #once\n\t * @param {String} event The name of the event.\n\t * @param {Function} callback The function to be called on event.\n\t * @param {Object} [options={}] Additional options.\n\t * @param {module:utils/priorities~PriorityString|Number} [options.priority='normal'] The priority of this event callback. The higher\n\t * the priority value the sooner the callback will be fired. Events having the same priority are called in the\n\t * order they were added.\n\t * @param {Object} [options.context] The object that represents `this` in the callback. Defaults to the object firing the event.\n\t */\n\tonce( event, callback, options ) {\n\t\tconst onceCallback = function( event ) {\n\t\t\t// Go off() at the first call.\n\t\t\tevent.off();\n\n\t\t\t// Go with the original callback.\n\t\t\tcallback.apply( this, arguments );\n\t\t};\n\n\t\t// Make a similar on() call, simply replacing the callback.\n\t\tthis.on( event, onceCallback, options );\n\t},\n\n\t/**\n\t * Stops executing the callback on the given event.\n\t *\n\t * @method #off\n\t * @param {String} event The name of the event.\n\t * @param {Function} callback The function to stop being called.\n\t * @param {Object} [context] The context object to be removed, pared with the given callback. To handle cases where\n\t * the same callback is used several times with different contexts.\n\t */\n\toff( event, callback, context ) {\n\t\tconst lists = getCallbacksListsForNamespace( this, event );\n\n\t\tfor ( let callbacks of lists ) {\n\t\t\tfor ( let i = 0; i < callbacks.length; i++ ) {\n\t\t\t\tif ( callbacks[ i ].callback == callback ) {\n\t\t\t\t\tif ( !context || context == callbacks[ i ].context ) {\n\t\t\t\t\t\t// Remove the callback from the list (fixing the next index).\n\t\t\t\t\t\tcallbacks.splice( i, 1 );\n\t\t\t\t\t\ti--;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t},\n\n\t/**\n\t * Registers a callback function to be executed when an event is fired in a specific (emitter) object.\n\t *\n\t * @method #listenTo\n\t * @param {module:utils/emittermixin~Emitter} emitter The object that fires the event.\n\t * @param {String} event The name of the event.\n\t * @param {Function} callback The function to be called on event.\n\t * @param {Object} [options={}] Additional options.\n\t * @param {module:utils/priorities~PriorityString|Number} [options.priority='normal'] The priority of this event callback. The higher\n\t * the priority value the sooner the callback will be fired. Events having the same priority are called in the\n\t * order they were added.\n\t * @param {Object} [options.context] The object that represents `this` in the callback. Defaults to the object firing the event.\n\t */\n\tlistenTo( emitter, event, callback, options ) {\n\t\tlet emitters, emitterId, emitterInfo, eventCallbacks;\n\n\t\t// _listeningTo contains a list of emitters that this object is listening to.\n\t\t// This list has the following format:\n\t\t//\n\t\t// _listeningTo: {\n\t\t//     emitterId: {\n\t\t//         emitter: emitter,\n\t\t//         callbacks: {\n\t\t//             event1: [ callback1, callback2, ... ]\n\t\t//             ....\n\t\t//         }\n\t\t//     },\n\t\t//     ...\n\t\t// }\n\n\t\tif ( !this[ _listeningTo ] ) {\n\t\t\tthis[ _listeningTo ] = {};\n\t\t}\n\n\t\temitters = this[ _listeningTo ];\n\n\t\tif ( !_getEmitterId( emitter ) ) {\n\t\t\t_setEmitterId( emitter );\n\t\t}\n\n\t\temitterId = _getEmitterId( emitter );\n\n\t\tif ( !( emitterInfo = emitters[ emitterId ] ) ) {\n\t\t\temitterInfo = emitters[ emitterId ] = {\n\t\t\t\temitter: emitter,\n\t\t\t\tcallbacks: {}\n\t\t\t};\n\t\t}\n\n\t\tif ( !( eventCallbacks = emitterInfo.callbacks[ event ] ) ) {\n\t\t\teventCallbacks = emitterInfo.callbacks[ event ] = [];\n\t\t}\n\n\t\teventCallbacks.push( callback );\n\n\t\t// Finally register the callback to the event.\n\t\temitter.on( event, callback, options );\n\t},\n\n\t/**\n\t * Stops listening for events. It can be used at different levels:\n\t *\n\t * * To stop listening to a specific callback.\n\t * * To stop listening to a specific event.\n\t * * To stop listening to all events fired by a specific object.\n\t * * To stop listening to all events fired by all object.\n\t *\n\t * @method #stopListening\n\t * @param {module:utils/emittermixin~Emitter} [emitter] The object to stop listening to. If omitted, stops it for all objects.\n\t * @param {String} [event] (Requires the `emitter`) The name of the event to stop listening to. If omitted, stops it\n\t * for all events from `emitter`.\n\t * @param {Function} [callback] (Requires the `event`) The function to be removed from the call list for the given\n\t * `event`.\n\t */\n\tstopListening( emitter, event, callback ) {\n\t\tlet emitters = this[ _listeningTo ];\n\t\tlet emitterId = emitter && _getEmitterId( emitter );\n\t\tlet emitterInfo = emitters && emitterId && emitters[ emitterId ];\n\t\tlet eventCallbacks = emitterInfo && event && emitterInfo.callbacks[ event ];\n\n\t\t// Stop if nothing has been listened.\n\t\tif ( !emitters || ( emitter && !emitterInfo ) || ( event && !eventCallbacks ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// All params provided. off() that single callback.\n\t\tif ( callback ) {\n\t\t\temitter.off( event, callback );\n\t\t}\n\t\t// Only `emitter` and `event` provided. off() all callbacks for that event.\n\t\telse if ( eventCallbacks ) {\n\t\t\twhile ( ( callback = eventCallbacks.pop() ) ) {\n\t\t\t\temitter.off( event, callback );\n\t\t\t}\n\t\t\tdelete emitterInfo.callbacks[ event ];\n\t\t}\n\t\t// Only `emitter` provided. off() all events for that emitter.\n\t\telse if ( emitterInfo ) {\n\t\t\tfor ( event in emitterInfo.callbacks ) {\n\t\t\t\tthis.stopListening( emitter, event );\n\t\t\t}\n\t\t\tdelete emitters[ emitterId ];\n\t\t}\n\t\t// No params provided. off() all emitters.\n\t\telse {\n\t\t\tfor ( emitterId in emitters ) {\n\t\t\t\tthis.stopListening( emitters[ emitterId ].emitter );\n\t\t\t}\n\t\t\tdelete this[ _listeningTo ];\n\t\t}\n\t},\n\n\t/**\n\t * Fires an event, executing all callbacks registered for it.\n\t *\n\t * The first parameter passed to callbacks is an {@link module:utils/eventinfo~EventInfo} object,\n\t * followed by the optional `args` provided in the `fire()` method call.\n\t *\n\t * @method #fire\n\t * @param {String|module:utils/eventinfo~EventInfo} eventOrInfo The name of the event or `EventInfo` object if event is delegated.\n\t * @param {...*} [args] Additional arguments to be passed to the callbacks.\n\t */\n\tfire( eventOrInfo, ...args ) {\n\t\tconst eventInfo = eventOrInfo instanceof EventInfo ? eventOrInfo : new EventInfo( this, eventOrInfo );\n\t\tconst event = eventInfo.name;\n\t\tlet callbacks = getCallbacksForEvent( this, event );\n\n\t\t// Record that the event passed this emitter on its path.\n\t\teventInfo.path.push( this );\n\n\t\t// Handle event listener callbacks first.\n\t\tif ( callbacks ) {\n\t\t\t// Arguments passed to each callback.\n\t\t\tconst callbackArgs = [ eventInfo, ...args ];\n\n\t\t\t// Copying callbacks array is the easiest and most secure way of preventing infinite loops, when event callbacks\n\t\t\t// are added while processing other callbacks. Previous solution involved adding counters (unique ids) but\n\t\t\t// failed if callbacks were added to the queue before currently processed callback.\n\t\t\t// If this proves to be too inefficient, another method is to change `.on()` so callbacks are stored if same\n\t\t\t// event is currently processed. Then, `.fire()` at the end, would have to add all stored events.\n\t\t\tcallbacks = Array.from( callbacks );\n\n\t\t\tfor ( let i = 0; i < callbacks.length; i++ ) {\n\t\t\t\tcallbacks[ i ].callback.apply( callbacks[ i ].context, callbackArgs );\n\n\t\t\t\t// Remove the callback from future requests if off() has been called.\n\t\t\t\tif ( eventInfo.off.called ) {\n\t\t\t\t\t// Remove the called mark for the next calls.\n\t\t\t\t\tdelete eventInfo.off.called;\n\n\t\t\t\t\tthis.off( event, callbacks[ i ].callback, callbacks[ i ].context );\n\t\t\t\t}\n\n\t\t\t\t// Do not execute next callbacks if stop() was called.\n\t\t\t\tif ( eventInfo.stop.called ) {\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t// Delegate event to other emitters if needed.\n\t\tif ( this._delegations ) {\n\t\t\tconst destinations = this._delegations.get( event );\n\t\t\tconst passAllDestinations = this._delegations.get( '*' );\n\n\t\t\tif ( destinations ) {\n\t\t\t\tfireDelegatedEvents( destinations, eventInfo, args );\n\t\t\t}\n\n\t\t\tif ( passAllDestinations ) {\n\t\t\t\tfireDelegatedEvents( passAllDestinations, eventInfo, args );\n\t\t\t}\n\t\t}\n\t},\n\n\t/**\n\t * Delegates selected events to another {@link module:utils/emittermixin~Emitter}. For instance:\n\t *\n\t *\t\temitterA.delegate( 'eventX' ).to( emitterB );\n\t *\t\temitterA.delegate( 'eventX', 'eventY' ).to( emitterC );\n\t *\n\t * then `eventX` is delegated (fired by) `emitterB` and `emitterC` along with `data`:\n\t *\n\t *\t\temitterA.fire( 'eventX', data );\n\t *\n\t * and `eventY` is delegated (fired by) `emitterC` along with `data`:\n\t *\n\t *\t\temitterA.fire( 'eventY', data );\n\t *\n\t * @method #delegate\n\t * @param {...String} events Event names that will be delegated to another emitter.\n\t * @returns {module:utils/emittermixin~EmitterMixinDelegateChain}\n\t */\n\tdelegate( ...events ) {\n\t\treturn {\n\t\t\tto: ( emitter, nameOrFunction ) => {\n\t\t\t\tif ( !this._delegations ) {\n\t\t\t\t\tthis._delegations = new Map();\n\t\t\t\t}\n\n\t\t\t\tfor ( let eventName of events ) {\n\t\t\t\t\tlet destinations = this._delegations.get( eventName );\n\n\t\t\t\t\tif ( !destinations ) {\n\t\t\t\t\t\tthis._delegations.set( eventName, new Map( [ [ emitter, nameOrFunction ] ] ) );\n\t\t\t\t\t} else {\n\t\t\t\t\t\tdestinations.set( emitter, nameOrFunction );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t};\n\t},\n\n\t/**\n\t * Stops delegating events. It can be used at different levels:\n\t *\n\t * * To stop delegating all events.\n\t * * To stop delegating a specific event to all emitters.\n\t * * To stop delegating a specific event to a specific emitter.\n\t *\n\t * @method #stopDelegating\n\t * @param {String} [event] The name of the event to stop delegating. If omitted, stops it all delegations.\n\t * @param {module:utils/emittermixin~Emitter} [emitter] (requires `event`) The object to stop delegating a particular event to.\n\t * If omitted, stops delegation of `event` to all emitters.\n\t */\n\tstopDelegating( event, emitter ) {\n\t\tif ( !this._delegations ) {\n\t\t\treturn;\n\t\t}\n\n\t\tif ( !event ) {\n\t\t\tthis._delegations.clear();\n\t\t} else if ( !emitter ) {\n\t\t\tthis._delegations.delete( event );\n\t\t} else {\n\t\t\tconst destinations = this._delegations.get( event );\n\n\t\t\tif ( destinations ) {\n\t\t\t\tdestinations.delete( emitter );\n\t\t\t}\n\t\t}\n\t}\n};\n\nexport default EmitterMixin;\n\n/**\n * Checks if `listeningEmitter` listens to an emitter with given `listenedToEmitterId` and if so, returns that emitter.\n * If not, returns `null`.\n *\n * @protected\n * @param {module:utils/emittermixin~EmitterMixin} listeningEmitter Emitter that listens.\n * @param {String} listenedToEmitterId Unique emitter id of emitter listened to.\n * @returns {module:utils/emittermixin~EmitterMixin|null}\n */\nexport function _getEmitterListenedTo( listeningEmitter, listenedToEmitterId ) {\n\tif ( listeningEmitter[ _listeningTo ] && listeningEmitter[ _listeningTo ][ listenedToEmitterId ] ) {\n\t\treturn listeningEmitter[ _listeningTo ][ listenedToEmitterId ].emitter;\n\t}\n\n\treturn null;\n}\n\n/**\n * Sets emitter's unique id.\n *\n * **Note:** `_emitterId` can be set only once.\n *\n * @protected\n * @param {module:utils/emittermixin~EmitterMixin} emitter Emitter for which id will be set.\n * @param {String} [id] Unique id to set. If not passed, random unique id will be set.\n */\nexport function _setEmitterId( emitter, id ) {\n\tif ( !emitter[ _emitterId ] ) {\n\t\temitter[ _emitterId ] = id || uid();\n\t}\n}\n\n/**\n * Returns emitter's unique id.\n *\n * @protected\n * @param {module:utils/emittermixin~EmitterMixin} emitter Emitter which id will be returned.\n */\nexport function _getEmitterId( emitter ) {\n\treturn emitter[ _emitterId ];\n}\n\n// Gets the internal `_events` property of the given object.\n// `_events` property store all lists with callbacks for registered event names.\n// If there were no events registered on the object, empty `_events` object is created.\nfunction getEvents( source ) {\n\tif ( !source._events ) {\n\t\tObject.defineProperty( source, '_events', {\n\t\t\tvalue: {}\n\t\t} );\n\t}\n\n\treturn source._events;\n}\n\n// Creates event node for generic-specific events relation architecture.\nfunction makeEventNode() {\n\treturn {\n\t\tcallbacks: [],\n\t\tchildEvents: []\n\t};\n}\n\n// Creates an architecture for generic-specific events relation.\n// If needed, creates all events for given eventName, i.e. if the first registered event\n// is foo:bar:abc, it will create foo:bar:abc, foo:bar and foo event and tie them together.\n// It also copies callbacks from more generic events to more specific events when\n// specific events are created.\nfunction createEventNamespace( source, eventName ) {\n\tconst events = getEvents( source );\n\n\t// First, check if the event we want to add to the structure already exists.\n\tif ( events[ eventName ] ) {\n\t\t// If it exists, we don't have to do anything.\n\t\treturn;\n\t}\n\n\t// In other case, we have to create the structure for the event.\n\t// Note, that we might need to create intermediate events too.\n\t// I.e. if foo:bar:abc is being registered and we only have foo in the structure,\n\t// we need to also register foo:bar.\n\n\t// Currently processed event name.\n\tlet name = eventName;\n\t// Name of the event that is a child event for currently processed event.\n\tlet childEventName = null;\n\n\t// Array containing all newly created specific events.\n\tconst newEventNodes = [];\n\n\t// While loop can't check for ':' index because we have to handle generic events too.\n\t// In each loop, we truncate event name, going from the most specific name to the generic one.\n\t// I.e. foo:bar:abc -> foo:bar -> foo.\n\twhile ( name !== '' ) {\n\t\tif ( events[ name ] ) {\n\t\t\t// If the currently processed event name is already registered, we can be sure\n\t\t\t// that it already has all the structure created, so we can break the loop here\n\t\t\t// as no more events need to be registered.\n\t\t\tbreak;\n\t\t}\n\n\t\t// If this event is not yet registered, create a new object for it.\n\t\tevents[ name ] = makeEventNode();\n\t\t// Add it to the array with newly created events.\n\t\tnewEventNodes.push( events[ name ] );\n\n\t\t// Add previously processed event name as a child of this event.\n\t\tif ( childEventName ) {\n\t\t\tevents[ name ].childEvents.push( childEventName );\n\t\t}\n\n\t\tchildEventName = name;\n\t\t// If `.lastIndexOf()` returns -1, `.substr()` will return '' which will break the loop.\n\t\tname = name.substr( 0, name.lastIndexOf( ':' ) );\n\t}\n\n\tif ( name !== '' ) {\n\t\t// If name is not empty, we found an already registered event that was a parent of the\n\t\t// event we wanted to register.\n\n\t\t// Copy that event's callbacks to newly registered events.\n\t\tfor ( let node of newEventNodes ) {\n\t\t\tnode.callbacks = events[ name ].callbacks.slice();\n\t\t}\n\n\t\t// Add last newly created event to the already registered event.\n\t\tevents[ name ].childEvents.push( childEventName );\n\t}\n}\n\n// Gets an array containing callbacks list for a given event and it's more specific events.\n// I.e. if given event is foo:bar and there is also foo:bar:abc event registered, this will\n// return callback list of foo:bar and foo:bar:abc (but not foo).\n// Returns empty array if given event has not been yet registered.\nfunction getCallbacksListsForNamespace( source, eventName ) {\n\tconst eventNode = getEvents( source )[ eventName ];\n\n\tif ( !eventNode ) {\n\t\treturn [];\n\t}\n\n\tlet callbacksLists = [ eventNode.callbacks ];\n\n\tfor ( let i = 0; i < eventNode.childEvents.length; i++ ) {\n\t\tlet childCallbacksLists = getCallbacksListsForNamespace( source, eventNode.childEvents[ i ] );\n\n\t\tcallbacksLists = callbacksLists.concat( childCallbacksLists );\n\t}\n\n\treturn callbacksLists;\n}\n\n// Get the list of callbacks for a given event, but only if there any callbacks have been registered.\n// If there are no callbacks registered for given event, it checks if this is a specific event and looks\n// for callbacks for it's more generic version.\nfunction getCallbacksForEvent( source, eventName ) {\n\tlet event;\n\n\tif ( !source._events || !( event = source._events[ eventName ] ) || !event.callbacks.length ) {\n\t\t// There are no callbacks registered for specified eventName.\n\t\t// But this could be a specific-type event that is in a namespace.\n\t\tif ( eventName.indexOf( ':' ) > -1 ) {\n\t\t\t// If the eventName is specific, try to find callback lists for more generic event.\n\t\t\treturn getCallbacksForEvent( source, eventName.substr( 0, eventName.lastIndexOf( ':' ) ) );\n\t\t} else {\n\t\t\t// If this is a top-level generic event, return null;\n\t\t\treturn null;\n\t\t}\n\t}\n\n\treturn event.callbacks;\n}\n\n// Fires delegated events for given map of destinations.\n//\n// @private\n// * @param {Map.<utils.Emitter>} destinations A map containing `[ {@link utils.Emitter}, \"event name\" ]` pair destinations.\n// * @param {utils.EventInfo} eventInfo The original event info object.\n// * @param {Array.<*>} fireArgs Arguments the original event was fired with.\nfunction fireDelegatedEvents( destinations, eventInfo, fireArgs ) {\n\tfor ( let [ emitter, name ] of destinations ) {\n\t\tif ( !name ) {\n\t\t\tname = eventInfo.name;\n\t\t} else if ( typeof name == 'function' ) {\n\t\t\tname = name( eventInfo.name );\n\t\t}\n\n\t\tconst delegatedInfo = new EventInfo( eventInfo.source, name );\n\n\t\tdelegatedInfo.path = [ ...eventInfo.path ];\n\n\t\temitter.fire( delegatedInfo, ...fireArgs );\n\t}\n}\n\n/**\n * Interface representing classes which mix in {@link module:utils/emittermixin~EmitterMixin}.\n *\n * @interface Emitter\n */\n\n/**\n * The return value of {@link ~EmitterMixin#delegate}.\n *\n * @interface module:utils/emittermixin~EmitterMixinDelegateChain\n */\n\n/**\n * Selects destination for {@link module:utils/emittermixin~EmitterMixin#delegate} events.\n *\n * @method #to\n * @param {module:utils/emittermixin~Emitter} emitter An `EmitterMixin` instance which is the destination for delegated events.\n * @param {String|Function} nameOrFunction A custom event name or function which converts the original name string.\n */\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/emittermixin.js","import apply from './_apply';\nimport toInteger from './toInteger';\n\n/** Used as the `TypeError` message for \"Functions\" methods. */\nvar FUNC_ERROR_TEXT = 'Expected a function';\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeMax = Math.max;\n\n/**\n * Creates a function that invokes `func` with the `this` binding of the\n * created function and arguments from `start` and beyond provided as\n * an array.\n *\n * **Note:** This method is based on the\n * [rest parameter](https://mdn.io/rest_parameters).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Function\n * @param {Function} func The function to apply a rest parameter to.\n * @param {number} [start=func.length-1] The start position of the rest parameter.\n * @returns {Function} Returns the new function.\n * @example\n *\n * var say = _.rest(function(what, names) {\n *   return what + ' ' + _.initial(names).join(', ') +\n *     (_.size(names) > 1 ? ', & ' : '') + _.last(names);\n * });\n *\n * say('hello', 'fred', 'barney', 'pebbles');\n * // => 'hello fred, barney, & pebbles'\n */\nfunction rest(func, start) {\n  if (typeof func != 'function') {\n    throw new TypeError(FUNC_ERROR_TEXT);\n  }\n  start = nativeMax(start === undefined ? (func.length - 1) : toInteger(start), 0);\n  return function() {\n    var args = arguments,\n        index = -1,\n        length = nativeMax(args.length - start, 0),\n        array = Array(length);\n\n    while (++index < length) {\n      array[index] = args[start + index];\n    }\n    switch (start) {\n      case 0: return func.call(this, array);\n      case 1: return func.call(this, args[0], array);\n      case 2: return func.call(this, args[0], args[1], array);\n    }\n    var otherArgs = Array(start + 1);\n    index = -1;\n    while (++index < start) {\n      otherArgs[index] = args[index];\n    }\n    otherArgs[start] = array;\n    return apply(func, this, otherArgs);\n  };\n}\n\nexport default rest;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/rest.js","import baseMatches from './_baseMatches';\nimport baseMatchesProperty from './_baseMatchesProperty';\nimport identity from './identity';\nimport isArray from './isArray';\nimport property from './property';\n\n/**\n * The base implementation of `_.iteratee`.\n *\n * @private\n * @param {*} [value=_.identity] The value to convert to an iteratee.\n * @returns {Function} Returns the iteratee.\n */\nfunction baseIteratee(value) {\n  // Don't store the `typeof` result in a variable to avoid a JIT bug in Safari 9.\n  // See https://bugs.webkit.org/show_bug.cgi?id=156034 for more details.\n  if (typeof value == 'function') {\n    return value;\n  }\n  if (value == null) {\n    return identity;\n  }\n  if (typeof value == 'object') {\n    return isArray(value)\n      ? baseMatchesProperty(value[0], value[1])\n      : baseMatches(value);\n  }\n  return property(value);\n}\n\nexport default baseIteratee;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_baseIteratee.js","/**\n * Checks if `value` is classified as an `Array` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @type {Function}\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is correctly classified,\n *  else `false`.\n * @example\n *\n * _.isArray([1, 2, 3]);\n * // => true\n *\n * _.isArray(document.body.children);\n * // => false\n *\n * _.isArray('abc');\n * // => false\n *\n * _.isArray(_.noop);\n * // => false\n */\nvar isArray = Array.isArray;\n\nexport default isArray;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/isArray.js","import isArrayLike from './isArrayLike';\nimport isObjectLike from './isObjectLike';\n\n/**\n * This method is like `_.isArrayLike` except that it also checks if `value`\n * is an object.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an array-like object,\n *  else `false`.\n * @example\n *\n * _.isArrayLikeObject([1, 2, 3]);\n * // => true\n *\n * _.isArrayLikeObject(document.body.children);\n * // => true\n *\n * _.isArrayLikeObject('abc');\n * // => false\n *\n * _.isArrayLikeObject(_.noop);\n * // => false\n */\nfunction isArrayLikeObject(value) {\n  return isObjectLike(value) && isArrayLike(value);\n}\n\nexport default isArrayLikeObject;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/isArrayLikeObject.js","/**\n * Checks if `value` is the\n * [language type](http://www.ecma-international.org/ecma-262/6.0/#sec-ecmascript-language-types)\n * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an object, else `false`.\n * @example\n *\n * _.isObject({});\n * // => true\n *\n * _.isObject([1, 2, 3]);\n * // => true\n *\n * _.isObject(_.noop);\n * // => true\n *\n * _.isObject(null);\n * // => false\n */\nfunction isObject(value) {\n  var type = typeof value;\n  return !!value && (type == 'object' || type == 'function');\n}\n\nexport default isObject;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/isObject.js","import toFinite from './toFinite';\n\n/**\n * Converts `value` to an integer.\n *\n * **Note:** This function is loosely based on\n * [`ToInteger`](http://www.ecma-international.org/ecma-262/6.0/#sec-tointeger).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {number} Returns the converted integer.\n * @example\n *\n * _.toInteger(3.2);\n * // => 3\n *\n * _.toInteger(Number.MIN_VALUE);\n * // => 0\n *\n * _.toInteger(Infinity);\n * // => 1.7976931348623157e+308\n *\n * _.toInteger('3.2');\n * // => 3\n */\nfunction toInteger(value) {\n  var result = toFinite(value),\n      remainder = result % 1;\n\n  return result === result ? (remainder ? result - remainder : result) : 0;\n}\n\nexport default toInteger;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/toInteger.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module core/command/command\n */\n\nimport ObservableMixin from '@ckeditor/ckeditor5-utils/src/observablemixin';\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\n\n/**\n * The base class for CKEditor commands.\n *\n * Commands are main way to manipulate editor contents and state. They are mostly used by UI elements (or by other\n * commands) to make changes in Tree Model. Commands are available in every part of code that has access to\n * {@link module:core/editor/editor~Editor} instance, since they are registered in it and executed through\n * {@link module:core/editor/editor~Editor#execute}.\n * Commands instances are available through {@link module:core/editor/editor~Editor#commands}.\n *\n * This is an abstract base class for all commands.\n *\n * @mixes module:utils/observablemixin~ObservaleMixin\n */\nexport default class Command {\n\t/**\n\t * Creates a new Command instance.\n\t *\n\t * @param {module:core/editor/editor~Editor} editor Editor on which this command will be used.\n\t */\n\tconstructor( editor ) {\n\t\t/**\n\t\t * Editor on which this command will be used.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:core/editor/editor~Editor} #editor\n\t\t */\n\t\tthis.editor = editor;\n\n\t\t/**\n\t\t * Flag indicating whether a command is enabled or disabled.\n\t\t * A disabled command should do nothing upon it's execution.\n\t\t *\n\t\t * @observable\n\t\t * @member {Boolean} #isEnabled\n\t\t */\n\t\tthis.set( 'isEnabled', true );\n\n\t\t// If schema checking function is specified, add it to the `refreshState` listeners.\n\t\t// Feature will be disabled if it does not apply to schema requirements.\n\t\tif ( this._checkEnabled ) {\n\t\t\tthis.on( 'refreshState', ( evt, data ) => {\n\t\t\t\tdata.isEnabled = this._checkEnabled();\n\t\t\t} );\n\t\t}\n\t}\n\n\tdestroy() {\n\t\tthis.stopListening();\n\t}\n\n\t/**\n\t * Fires `refreshState` event and checks it's resolve value to decide whether command should be enabled or not.\n\t * Other parts of code might listen to `refreshState` event on this command and add their callbacks. This\n\t * way the responsibility of deciding whether a command should be enabled is shared.\n\t *\n\t * @fires refreshState\n\t */\n\trefreshState() {\n\t\tconst data = { isEnabled: true };\n\t\tthis.fire( 'refreshState', data );\n\n\t\tthis.isEnabled = data.isEnabled;\n\t}\n\n\t/**\n\t * Executes the command if it is enabled.\n\t *\n\t * @protected\n\t * @param {*} param Parameter passed to {@link module:core/editor/editor~Editor#execute execute} method of this command.\n\t */\n\t_execute( param ) {\n\t\tif ( this.isEnabled ) {\n\t\t\tthis._doExecute( param );\n\t\t}\n\t}\n\n\t/**\n\t * Disables the command. This should be used only by the command itself. Other parts of code should add\n\t * listeners to `refreshState` event.\n\t *\n\t * @protected\n\t */\n\t_disable() {\n\t\tthis.on( 'refreshState', disableCallback );\n\t\tthis.refreshState();\n\t}\n\n\t/**\n\t * Enables the command (internally). This should be used only by the command itself. Command will be enabled if\n\t * other listeners does not return false on `refreshState` event callbacks. Firing {@link #_enable}\n\t * does not guarantee that {@link #isEnabled} will be set to true, as it depends on other listeners.\n\t *\n\t * @protected\n\t */\n\t_enable() {\n\t\tthis.off( 'refreshState', disableCallback );\n\t\tthis.refreshState();\n\t}\n\n\t/**\n\t * Executes command.\n\t * This is an abstract method that should be overwritten in child classes.\n\t *\n\t * @protected\n\t */\n\t_doExecute() {}\n\n\t/**\n\t * Checks if a command should be enabled according to its own rules. Mostly it will check schema to see if the command\n\t * is allowed to be executed in given position. This method can be defined in child class (but is not obligatory).\n\t * If it is defined, it will be added as a callback to `refreshState` event.\n\t *\n\t * @protected\n\t * @method #_checkEnabled\n\t * @returns {Boolean} `true` if command should be enabled according to\n\t * {@link module:engine/model/document~Document#schema}. `false` otherwise.\n\t */\n}\n\nfunction disableCallback( evt, data ) {\n\tdata.isEnabled = false;\n}\n\nmix( Command, ObservableMixin );\n\n/**\n * Fired whenever command has to have its {@link #isEnabled} property refreshed. Every feature,\n * command or other class which needs to disable command (set `isEnabled` to `false`) should listen to this\n * event.\n *\n * @event refreshState\n * @param {Object} data\n * @param {Boolean} [data.isEnabled=true]\n */\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-core/src/command/command.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/batch\n */\n\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/**\n * `Batch` instance groups document changes ({@link module:engine/model/delta/delta~Delta deltas}). All deltas grouped in a single `Batch`\n * can be reverted together, so you can think about `Batch` as of a single undo step. If you want to extend given undo step you\n * can call another method on the same `Batch` object. If you want to create a separate undo step you can create a new `Batch`.\n *\n * For example to create two separate undo steps you can call:\n *\n *\t\tdoc.batch().insert( firstPosition, 'foo' );\n *\t\tdoc.batch().insert( secondPosition, 'bar' );\n *\n * To create a single undo step:\n *\n *\t\tconst batch = doc.batch();\n *\t\tbatch.insert( firstPosition, 'foo' );\n *\t\tbatch.insert( secondPosition, 'bar' );\n *\n * Note that all document modification methods (insert, remove, split, etc.) are chainable so you can shorten code to:\n *\n *\t\tdoc.batch().insert( firstPosition, 'foo' ).insert( secondPosition, 'bar' );\n */\nexport default class Batch {\n\t/**\n\t * Creates `Batch` instance. Not recommended to use directly, use {@link module:engine/model/document~Document#batch} instead.\n\t *\n\t * @param {module:engine/model/document~Document} document Document which this Batch changes.\n\t * @param {'transparent'|'default'} [type='default'] Type of the batch.\n\t */\n\tconstructor( document, type = 'default' ) {\n\t\t/**\n\t\t * Document which this batch changes.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/model/document~Document} module:engine/model/batch~Batch#document\n\t\t */\n\t\tthis.document = document;\n\n\t\t/**\n\t\t * Array of deltas which compose this batch.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Array.<module:engine/model/delta/delta~Delta>} module:engine/model/batch~Batch#deltas\n\t\t */\n\t\tthis.deltas = [];\n\n\t\t/**\n\t\t * Type of the batch.\n\t\t *\n\t\t * Can be one of the following values:\n\t\t * * `'default'` - all \"normal\" batches, most commonly used type.\n\t\t * * `'transparent'` - batch that should be ignored by other features, i.e. initial batch or collaborative editing changes.\n\t\t *\n\t\t * @readonly\n\t\t * @member {'transparent'|'default'} module:engine/model/batch~Batch#type\n\t\t */\n\t\tthis.type = type;\n\t}\n\n\t/**\n\t * Returns this batch base version, which is equal to the base version of first delta in the batch.\n\t * If there are no deltas in the batch, it returns `null`.\n\t *\n\t * @readonly\n\t * @type {Number|null}\n\t */\n\tget baseVersion() {\n\t\treturn this.deltas.length > 0 ? this.deltas[ 0 ].baseVersion : null;\n\t}\n\n\t/**\n\t * Adds delta to the batch instance. All modification methods (insert, remove, split, etc.) use this method\n\t * to add created deltas.\n\t *\n\t * @param {module:engine/model/delta/delta~Delta} delta Delta to add.\n\t * @return {module:engine/model/delta/delta~Delta} Added delta.\n\t */\n\taddDelta( delta ) {\n\t\tdelta.batch = this;\n\t\tthis.deltas.push( delta );\n\n\t\treturn delta;\n\t}\n\n\t/**\n\t * Gets an iterable collection of operations.\n\t *\n\t * @returns {Iterable.<module:engine/model/operation/operation~Operation>}\n\t */\n\t*getOperations() {\n\t\tfor ( let delta of this.deltas ) {\n\t\t\tyield* delta.operations;\n\t\t}\n\t}\n}\n\n/**\n * Function to register batch methods. To make code scalable `Batch` do not have modification\n * methods built in. They can be registered using this method.\n *\n * This method checks if there is no naming collision and throws `batch-register-taken` if the method name\n * is already taken.\n *\n * Besides that no magic happens here, the method is added to the `Batch` class prototype.\n *\n * For example:\n *\n *\t\tBatch.register( 'insert', function( position, nodes ) {\n *\t\t\t// You can use a class inheriting from `Delta` if that class should handle OT in a special way.\n *\t\t\tconst delta = new Delta();\n *\n *\t\t\t// Add delta to the Batch instance. It is important to add a delta to the batch before applying any operation.\n *\t\t\tthis.addDelta( delta );\n *\n *\t\t\t// Create operations which should be components of this delta.\n *\t\t\tconst operation = new InsertOperation( position, nodes, this.document.version );\n *\n *\t\t\t// Add operation to the delta. It is important to add operation before applying it.\n *\t\t\tdelta.addOperation( operation );\n *\n *\t\t\t// Remember to apply every operation, no magic, you need to do it manually.\n *\t\t\tthis.document.applyOperation( operation );\n *\n *\t\t\t// Make this method chainable.\n *\t\t\treturn this;\n *\t\t} );\n *\n * @method module:engine/model/batch~Batch.register\n * @param {String} name Method name.\n * @param {Function} creator Method body.\n */\nexport function register( name, creator ) {\n\tif ( Batch.prototype[ name ] ) {\n\t\t/**\n\t\t * This batch method name is already taken.\n\t\t *\n\t\t * @error batch-register-taken\n\t\t * @param {String} name\n\t\t */\n\t\tthrow new CKEditorError(\n\t\t\t'model-batch-register-taken: This batch method name is already taken.',\n\t\t\t{ name: name } );\n\t}\n\n\tBatch.prototype[ name ] = creator;\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/batch.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/delta/deltafactory\n */\n\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\nimport OperationFactory from '../operation/operationfactory';\n\nconst deserializers = new Map();\n\n/**\n * A factory class for creating operations.\n *\n * Delta is a single, from the user action point of view, change in the editable document, like insert, split or\n * rename element. Delta is composed of operations, which are unit changes needed to be done to execute user action.\n *\n * Multiple deltas are grouped into a single {@link module:engine/model/batch~Batch}.\n */\nexport default class DeltaFactory {\n\t/**\n\t * Creates InsertDelta from deserialized object, i.e. from parsed JSON string.\n\t *\n\t * @param {Object} json\n\t * @param {module:engine/model/document~Document} doc Document on which this delta will be applied.\n\t * @returns {module:engine/model/delta/insertdelta~InsertDelta}\n\t */\n\tstatic fromJSON( json, doc ) {\n\t\tif ( !deserializers.has( json.__className ) ) {\n\t\t\t/**\n\t\t\t * This delta has no defined deserializer.\n\t\t\t *\n\t\t\t * @error delta-fromjson-no-deserializer\n\t\t\t * @param {String} name\n\t\t\t */\n\t\t\tthrow new CKEditorError(\n\t\t\t\t'delta-fromjson-no-deserializer: This delta has no defined deserializer',\n\t\t\t\t{ name: json.__className }\n\t\t\t);\n\t\t}\n\n\t\tlet Delta = deserializers.get( json.__className );\n\n\t\tlet delta = new Delta();\n\n\t\tfor ( let operation of json.operations ) {\n\t\t\tdelta.addOperation( OperationFactory.fromJSON( operation, doc ) );\n\t\t}\n\n\t\treturn delta;\n\t}\n\n\t/**\n\t * Registers a class for delta factory.\n\t *\n\t * @param {Function} Delta A delta class to register.\n\t */\n\tstatic register( Delta ) {\n\t\tdeserializers.set( Delta.className, Delta );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/delta/deltafactory.js","/**\n * Gets the last element of `array`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to query.\n * @returns {*} Returns the last element of `array`.\n * @example\n *\n * _.last([1, 2, 3]);\n * // => 3\n */\nfunction last(array) {\n  var length = array ? array.length : 0;\n  return length ? array[length - 1] : undefined;\n}\n\nexport default last;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/last.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/delta/delta\n */\n\nimport clone from '@ckeditor/ckeditor5-utils/src/lib/lodash/clone';\nimport DeltaFactory from './deltafactory';\n\n/**\n * Base class for all deltas.\n *\n * Delta is a single, from the user action point of view, change in the editable document, like insert, split or\n * rename element. Delta is composed of operations, which are unit changes needed to be done to execute user action.\n *\n * Multiple deltas are grouped into a single {@link module:engine/model/batch~Batch}.\n */\nexport default class Delta {\n\t/**\n\t * Creates a delta instance.\n\t */\n\tconstructor() {\n\t\t/**\n\t\t * {@link module:engine/model/batch~Batch} which delta is a part of. This property is null by default and set by the\n\t\t * {@link module:engine/model/batch~Batch#addDelta} method.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/model/batch~Batch} module:engine/model/delta/delta~Delta#batch\n\t\t */\n\t\tthis.batch = null;\n\n\t\t/**\n\t\t * Array of operations which compose delta.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/model/operation/operation~Operation[]} module:engine/model/delta/delta~Delta#operations\n\t\t */\n\t\tthis.operations = [];\n\t}\n\n\t/**\n\t * Returns delta base version which is equal to the base version of the first operation in delta. If there\n\t * are no operations in delta, returns `null`.\n\t *\n\t * @see module:engine/model/document~Document\n\t * @type {Number|null}\n\t */\n\tget baseVersion() {\n\t\tif ( this.operations.length > 0 ) {\n\t\t\treturn this.operations[ 0 ].baseVersion;\n\t\t}\n\n\t\treturn null;\n\t}\n\n\t/**\n\t * @param {Number} baseVersion\n\t */\n\tset baseVersion( baseVersion ) {\n\t\tfor ( let operation of this.operations ) {\n\t\t\toperation.baseVersion = baseVersion++;\n\t\t}\n\t}\n\n\t/**\n\t * A class that will be used when creating reversed delta.\n\t *\n\t * @private\n\t * @type {Function}\n\t */\n\tget _reverseDeltaClass() {\n\t\treturn Delta;\n\t}\n\n\t/**\n\t * Delta type.\n\t *\n\t * @readonly\n\t * @member {String} #type\n\t */\n\n\t/**\n\t * Add operation to the delta.\n\t *\n\t * @param {module:engine/model/operation/operation~Operation} operation Operation instance.\n\t */\n\taddOperation( operation ) {\n\t\toperation.delta = this;\n\t\tthis.operations.push( operation );\n\n\t\treturn operation;\n\t}\n\n\t/**\n\t * Creates and returns a delta that has the same parameters as this delta.\n\t *\n\t * @returns {module:engine/model/delta/delta~Delta} Clone of this delta.\n\t */\n\tclone() {\n\t\tlet delta = new this.constructor();\n\n\t\tfor ( let op of this.operations ) {\n\t\t\tdelta.addOperation( op.clone() );\n\t\t}\n\n\t\treturn delta;\n\t}\n\n\t/**\n\t * Creates and returns a reverse delta. Reverse delta when executed right after the original delta will bring back\n\t * tree model state to the point before the original delta execution. In other words, it reverses changes done\n\t * by the original delta.\n\t *\n\t * Keep in mind that tree model state may change since executing the original delta, so reverse delta may be \"outdated\".\n\t * In that case you will need to {@link module:engine/model/delta/transform~transform} it by all deltas that were executed after\n\t * the original delta.\n\t *\n\t * @returns {module:engine/model/delta/delta~Delta} Reversed delta.\n\t */\n\tgetReversed() {\n\t\tlet delta = new this._reverseDeltaClass();\n\n\t\tfor ( let op of this.operations ) {\n\t\t\tdelta.addOperation( op.getReversed() );\n\t\t}\n\n\t\tdelta.operations.reverse();\n\n\t\tfor ( let i = 0; i < delta.operations.length; i++ ) {\n\t\t\tdelta.operations[ i ].baseVersion = this.operations[ this.operations.length - 1 ].baseVersion + i + 1;\n\t\t}\n\n\t\treturn delta;\n\t}\n\n\t/**\n\t * Custom toJSON method to make deltas serializable.\n\t *\n\t * @returns {Object} Clone of this delta with added class name.\n\t */\n\ttoJSON() {\n\t\tlet json = clone( this );\n\n\t\tjson.__className = this.constructor.className;\n\n\t\t// Remove parent batch to avoid circular dependencies.\n\t\tdelete json.batch;\n\n\t\treturn json;\n\t}\n\n\t/**\n\t * Delta class name. Used by {@link #toJSON} method for serialization and\n\t * {@link module:engine/model/delta/deltafactory~DeltaFactory.fromJSON} during deserialization.\n\t *\n\t * @type {String}\n\t * @readonly\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.delta.Delta';\n\t}\n\n\t/**\n\t * Delta priority. Used in {@link module:engine/model/delta/transform~transform delta transformations}. Delta with the higher\n\t * priority will be treated as more important when resolving transformation conflicts. If deltas have same\n\t * priority, other factors will be used to determine which delta is more important.\n\t *\n\t * @private\n\t * @type {Number}\n\t */\n\tstatic get _priority() {\n\t\treturn 0;\n\t}\n}\n\nDeltaFactory.register( Delta );\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/delta/delta.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/element\n */\n\nimport Node from './node';\nimport Text from './text';\nimport objectToMap from '@ckeditor/ckeditor5-utils/src/objecttomap';\nimport isIterable from '@ckeditor/ckeditor5-utils/src/isiterable';\nimport isPlainObject from '@ckeditor/ckeditor5-utils/src/lib/lodash/isPlainObject';\nimport Matcher from './matcher';\n\n/**\n * View element.\n *\n * Editing engine does not define fixed HTML DTD. This is why the type of the {@link module:engine/view/element~Element} need to\n * be defined by the feature developer. Creating an element you should use {@link module:engine/view/containerelement~ContainerElement}\n * class, {@link module:engine/view/attributeelement~AttributeElement} class or {@link module:engine/view/emptyelement~EmptyElement} class.\n *\n * Note that for view elements which are not created from model, like elements from mutations, paste or\n * {@link module:engine/controller/datacontroller~DataController#set data.set} it is not possible to define the type of the element, so\n * these will be instances of the {@link module:engine/view/element~Element}.\n *\n * @extends module:engine/view/node~Node\n */\nexport default class Element extends Node {\n\t/**\n\t * Creates a view element.\n\t *\n\t * Attributes can be passed in various formats:\n\t *\n\t *\t\tnew Element( 'div', { 'class': 'editor', 'contentEditable': 'true' } ); // object\n\t *\t\tnew Element( 'div', [ [ 'class', 'editor' ], [ 'contentEditable', 'true' ] ] ); // map-like iterator\n\t *\t\tnew Element( 'div', mapOfAttributes ); // map\n\t *\n\t * @param {String} name Node name.\n\t * @param {Object|Iterable} [attrs] Collection of attributes.\n\t * @param {module:engine/view/node~Node|Iterable.<module:engine/view/node~Node>} [children]\n\t * List of nodes to be inserted into created element.\n\t */\n\tconstructor( name, attrs, children ) {\n\t\tsuper();\n\n\t\t/**\n\t\t * Name of the element.\n\t\t *\n\t\t * @readonly\n\t\t * @member {String}\n\t\t */\n\t\tthis.name = name;\n\n\t\t/**\n\t\t * Map of attributes, where attributes names are keys and attributes values are values.\n\t\t *\n\t\t * @protected\n\t\t * @member {Map} #_attrs\n\t\t */\n\t\tif ( isPlainObject( attrs ) ) {\n\t\t\tthis._attrs = objectToMap( attrs );\n\t\t} else {\n\t\t\tthis._attrs = new Map( attrs );\n\t\t}\n\n\t\t/**\n\t\t * Array of child nodes.\n\t\t *\n\t\t * @protected\n\t\t * @member {Array.<module:engine/view/node~Node>}\n\t\t */\n\t\tthis._children = [];\n\n\t\tif ( children ) {\n\t\t\tthis.insertChildren( 0, children );\n\t\t}\n\n\t\t/**\n\t\t * Set of classes associated with element instance.\n\t\t *\n\t\t * @protected\n\t\t * @member {Set}\n\t\t */\n\t\tthis._classes = new Set();\n\n\t\tif ( this._attrs.has( 'class' ) ) {\n\t\t\t// Remove class attribute and handle it by class set.\n\t\t\tconst classString = this._attrs.get( 'class' );\n\t\t\tparseClasses( this._classes, classString );\n\t\t\tthis._attrs.delete( 'class' );\n\t\t}\n\n\t\t/**\n\t\t * Map of styles.\n\t\t *\n\t\t * @protected\n\t\t * @member {Set} module:engine/view/element~Element#_styles\n\t\t */\n\t\tthis._styles = new Map();\n\n\t\tif ( this._attrs.has( 'style' ) ) {\n\t\t\t// Remove style attribute and handle it by styles map.\n\t\t\tparseInlineStyles( this._styles, this._attrs.get( 'style' ) );\n\t\t\tthis._attrs.delete( 'style' );\n\t\t}\n\n\t\t/**\n\t\t * Map of custom properties.\n\t\t * Custom properties can be added to element instance, will be cloned but not rendered into DOM.\n\t\t *\n\t\t * @protected\n\t\t * @memeber {Map}\n\t\t */\n\t\tthis._customProperties = new Map();\n\t}\n\n\t/**\n\t * Number of element's children.\n\t *\n\t * @readonly\n\t * @type {Number}\n\t */\n\tget childCount() {\n\t\treturn this._children.length;\n\t}\n\n\t/**\n\t * Is `true` if there are no nodes inside this element, `false` otherwise.\n\t *\n\t * @readonly\n\t * @type {Boolean}\n\t */\n\tget isEmpty() {\n\t\treturn this._children.length === 0;\n\t}\n\n\t/**\n\t * Checks whether given view tree object is of given type.\n\t *\n\t * Read more in {@link module:engine/view/node~Node#is}.\n\t *\n\t * @param {String} type\n\t * @param {String} [name] Element name.\n\t * @returns {Boolean}\n\t */\n\tis( type, name = null ) {\n\t\tif ( !name ) {\n\t\t\treturn type == 'element' || type == this.name;\n\t\t} else {\n\t\t\treturn type == 'element' && name == this.name;\n\t\t}\n\t}\n\n\t/**\n\t * Clones provided element.\n\t *\n\t * @param {Boolean} deep If set to `true` clones element and all its children recursively. When set to `false`,\n\t * element will be cloned without any children.\n\t * @returns {module:engine/view/element~Element} Clone of this element.\n\t */\n\tclone( deep ) {\n\t\tconst childrenClone = [];\n\n\t\tif ( deep ) {\n\t\t\tfor ( let child of this.getChildren() ) {\n\t\t\t\tchildrenClone.push( child.clone( deep ) );\n\t\t\t}\n\t\t}\n\n\t\t// ContainerElement and AttributeElement should be also cloned properly.\n\t\tconst cloned = new this.constructor( this.name, this._attrs, childrenClone );\n\n\t\t// Classes and styles are cloned separately - this solution is faster than adding them back to attributes and\n\t\t// parse once again in constructor.\n\t\tcloned._classes = new Set( this._classes );\n\t\tcloned._styles = new Map( this._styles );\n\n\t\t// Clone custom properties.\n\t\tcloned._customProperties = new Map( this._customProperties );\n\n\t\t// Clone filler offset method.\n\t\tcloned.getFillerOffset = this.getFillerOffset;\n\n\t\treturn cloned;\n\t}\n\n\t/**\n\t * {@link module:engine/view/element~Element#insertChildren Insert} a child node or a list of child nodes at the end of this node and sets\n\t * the parent of these nodes to this element.\n\t *\n\t * @fires module:engine/view/node~Node#change\n\t * @param {module:engine/view/node~Node|Iterable.<module:engine/view/node~Node>} nodes Node or the list of nodes to be inserted.\n\t * @returns {Number} Number of appended nodes.\n\t */\n\tappendChildren( nodes ) {\n\t\treturn this.insertChildren( this.childCount, nodes );\n\t}\n\n\t/**\n\t * Gets child at the given index.\n\t *\n\t * @param {Number} index Index of child.\n\t * @returns {module:engine/view/node~Node} Child node.\n\t */\n\tgetChild( index ) {\n\t\treturn this._children[ index ];\n\t}\n\n\t/**\n\t * Gets index of the given child node. Returns `-1` if child node is not found.\n\t *\n\t * @param {module:engine/view/node~Node} node Child node.\n\t * @returns {Number} Index of the child node.\n\t */\n\tgetChildIndex( node ) {\n\t\treturn this._children.indexOf( node );\n\t}\n\n\t/**\n\t * Gets child nodes iterator.\n\t *\n\t * @returns {Iterable.<module:engine/view/node~Node>} Child nodes iterator.\n\t */\n\tgetChildren() {\n\t\treturn this._children[ Symbol.iterator ]();\n\t}\n\n\t/**\n\t * Returns an iterator that contains the keys for attributes. Order of inserting attributes is not preserved.\n\t *\n\t * @returns {Iterator.<String>} Keys for attributes.\n\t */\n\t*getAttributeKeys() {\n\t\tif ( this._classes.size > 0 ) {\n\t\t\tyield 'class';\n\t\t}\n\n\t\tif ( this._styles.size > 0 ) {\n\t\t\tyield 'style';\n\t\t}\n\n\t\t// This is not an optimal solution because of https://github.com/ckeditor/ckeditor5-engine/issues/454.\n\t\t// It can be simplified to `yield* this._attrs.keys();`.\n\t\tfor ( let key of this._attrs.keys() ) {\n\t\t\tyield key;\n\t\t}\n\t}\n\n\t/**\n\t * Returns iterator that iterates over this element's attributes.\n\t *\n\t * Attributes are returned as arrays containing two items. First one is attribute key and second is attribute value.\n\t * This format is accepted by native `Map` object and also can be passed in `Node` constructor.\n\t *\n\t * @returns {Iterable.<*>}\n\t */\n\t*getAttributes() {\n\t\tyield* this._attrs.entries();\n\n\t\tif ( this._classes.size > 0 ) {\n\t\t\tyield [ 'class', this.getAttribute( 'class' ) ];\n\t\t}\n\n\t\tif ( this._styles.size > 0 ) {\n\t\t\tyield [ 'style', this.getAttribute( 'style' ) ];\n\t\t}\n\t}\n\n\t/**\n\t * Gets attribute by key. If attribute is not present - returns undefined.\n\t *\n\t * @param {String} key Attribute key.\n\t * @returns {String|undefined} Attribute value.\n\t */\n\tgetAttribute( key ) {\n\t\tif ( key == 'class' ) {\n\t\t\tif ( this._classes.size > 0 ) {\n\t\t\t\treturn [ ...this._classes ].join( ' ' );\n\t\t\t}\n\n\t\t\treturn undefined;\n\t\t}\n\n\t\tif ( key == 'style' ) {\n\t\t\tif ( this._styles.size > 0 ) {\n\t\t\t\tlet styleString = '';\n\n\t\t\t\tfor ( let [ property, value ] of this._styles ) {\n\t\t\t\t\tstyleString += `${ property }:${ value };`;\n\t\t\t\t}\n\n\t\t\t\treturn styleString;\n\t\t\t}\n\n\t\t\treturn undefined;\n\t\t}\n\n\t\treturn this._attrs.get( key );\n\t}\n\n\t/**\n\t * Returns a boolean indicating whether an attribute with the specified key exists in the element.\n\t *\n\t * @param {String} key Attribute key.\n\t * @returns {Boolean} `true` if attribute with the specified key exists in the element, false otherwise.\n\t */\n\thasAttribute( key ) {\n\t\tif ( key == 'class' ) {\n\t\t\treturn this._classes.size  > 0;\n\t\t}\n\n\t\tif ( key == 'style' ) {\n\t\t\treturn this._styles.size > 0;\n\t\t}\n\n\t\treturn this._attrs.has( key );\n\t}\n\n\t/**\n\t * Adds or overwrite attribute with a specified key and value.\n\t *\n\t * @param {String} key Attribute key.\n\t * @param {String} value Attribute value.\n\t * @fires module:engine/view/node~Node#change\n\t */\n\tsetAttribute( key, value ) {\n\t\tthis._fireChange( 'attributes', this );\n\n\t\tif ( key == 'class' ) {\n\t\t\tparseClasses( this._classes, value );\n\t\t} else if ( key == 'style' ) {\n\t\t\tparseInlineStyles( this._styles, value );\n\t\t} else {\n\t\t\tthis._attrs.set( key, value );\n\t\t}\n\t}\n\n\t/**\n\t * Inserts a child node or a list of child nodes on the given index and sets the parent of these nodes to\n\t * this element.\n\t *\n\t * @param {Number} index Position where nodes should be inserted.\n\t * @param {module:engine/view/node~Node|Iterable.<module:engine/view/node~Node>} nodes Node or the list of nodes to be inserted.\n\t * @fires module:engine/view/node~Node#change\n\t * @returns {Number} Number of inserted nodes.\n\t */\n\tinsertChildren( index, nodes ) {\n\t\tthis._fireChange( 'children', this );\n\t\tlet count = 0;\n\n\t\tnodes = normalize( nodes );\n\n\t\tfor ( let node of nodes ) {\n\t\t\tnode.parent = this;\n\n\t\t\tthis._children.splice( index, 0, node );\n\t\t\tindex++;\n\t\t\tcount++;\n\t\t}\n\n\t\treturn count;\n\t}\n\n\t/**\n\t * Removes attribute from the element.\n\t *\n\t * @param {String} key Attribute key.\n\t * @returns {Boolean} Returns true if an attribute existed and has been removed.\n\t * @fires module:engine/view/node~Node#change\n\t */\n\tremoveAttribute( key ) {\n\t\tthis._fireChange( 'attributes', this );\n\n\t\t// Remove class attribute.\n\t\tif ( key == 'class' ) {\n\t\t\tif ( this._classes.size > 0 ) {\n\t\t\t\tthis._classes.clear();\n\n\t\t\t\treturn true;\n\t\t\t}\n\n\t\t\treturn false;\n\t\t}\n\n\t\t// Remove style attribute.\n\t\tif ( key == 'style' ) {\n\t\t\tif ( this._styles.size > 0 ) {\n\t\t\t\tthis._styles.clear();\n\n\t\t\t\treturn true;\n\t\t\t}\n\n\t\t\treturn false;\n\t\t}\n\n\t\t// Remove other attributes.\n\t\treturn this._attrs.delete( key );\n\t}\n\n\t/**\n\t * Removes number of child nodes starting at the given index and set the parent of these nodes to `null`.\n\t *\n\t * @param {Number} index Number of the first node to remove.\n\t * @param {Number} [howMany=1] Number of nodes to remove.\n\t * @returns {Array.<module:engine/view/node~Node>} The array of removed nodes.\n\t * @fires module:engine/view/node~Node#change\n\t */\n\tremoveChildren( index, howMany = 1 ) {\n\t\tthis._fireChange( 'children', this );\n\n\t\tfor ( let i = index; i < index + howMany; i++ ) {\n\t\t\tthis._children[ i ].parent = null;\n\t\t}\n\n\t\treturn this._children.splice( index, howMany );\n\t}\n\n\t/**\n\t * Checks if this element is similar to other element.\n\t * Both elements should have the same name and attributes to be considered as similar. Two similar elements\n\t * can contain different set of children nodes.\n\t *\n\t * @param {module:engine/view/element~Element} otherElement\n\t * @returns {Boolean}\n\t */\n\tisSimilar( otherElement ) {\n\t\tif ( !( otherElement instanceof Element ) ) {\n\t\t\treturn false;\n\t\t}\n\n\t\t// If exactly the same Element is provided - return true immediately.\n\t\tif ( this === otherElement ) {\n\t\t\treturn true;\n\t\t}\n\n\t\t// Check element name.\n\t\tif ( this.name != otherElement.name ) {\n\t\t\treturn false;\n\t\t}\n\n\t\t// Check number of attributes, classes and styles.\n\t\tif ( this._attrs.size !== otherElement._attrs.size || this._classes.size !== otherElement._classes.size ||\n\t\t\tthis._styles.size !== otherElement._styles.size ) {\n\t\t\treturn false;\n\t\t}\n\n\t\t// Check if attributes are the same.\n\t\tfor ( let [ key, value ] of this._attrs ) {\n\t\t\tif ( !otherElement._attrs.has( key ) || otherElement._attrs.get( key ) !== value ) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t}\n\n\t\t// Check if classes are the same.\n\t\tfor ( let className of this._classes ) {\n\t\t\tif ( !otherElement._classes.has( className ) ) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t}\n\n\t\t// Check if styles are the same.\n\t\tfor ( let [ property, value ] of this._styles ) {\n\t\t\tif ( !otherElement._styles.has( property ) || otherElement._styles.get( property ) !== value ) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t}\n\n\t\treturn true;\n\t}\n\n\t/**\n\t * Adds specified class.\n\t *\n\t *\t\telement.addClass( 'foo' ); // Adds 'foo' class.\n\t *\t\telement.addClass( 'foo', 'bar' ); // Adds 'foo' and 'bar' classes.\n\t *\n\t * @param {...String} className\n\t * @fires module:engine/view/node~Node#change\n\t */\n\taddClass( ...className ) {\n\t\tthis._fireChange( 'attributes', this );\n\t\tclassName.forEach( name => this._classes.add( name ) );\n\t}\n\n\t/**\n\t * Removes specified class.\n\t *\n \t *\t\telement.removeClass( 'foo' );  // Removes 'foo' class.\n\t *\t\telement.removeClass( 'foo', 'bar' ); // Removes both 'foo' and 'bar' classes.\n\t *\n\t * @param {...String} className\n\t * @fires module:engine/view/node~Node#change\n\t */\n\tremoveClass( ...className ) {\n\t\tthis._fireChange( 'attributes', this );\n\t\tclassName.forEach( name => this._classes.delete( name ) );\n\t}\n\n\t/**\n\t * Returns true if class is present.\n\t * If more then one class is provided - returns true only when all classes are present.\n\t *\n\t *\t\telement.hasClass( 'foo' ); // Returns true if 'foo' class is present.\n\t *\t\telement.hasClass( 'foo', 'bar' ); // Returns true if 'foo' and 'bar' classes are both present.\n\t *\n\t * @param {...String} className\n\t */\n\thasClass( ...className ) {\n\t\tfor ( let name of className ) {\n\t\t\tif ( !this._classes.has( name ) ) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t}\n\n\t\treturn true;\n\t}\n\n\t/**\n\t * Returns iterator that contains all class names.\n\t *\n\t * @returns {Iterator.<String>}\n\t */\n\tgetClassNames() {\n\t\treturn this._classes.keys();\n\t}\n\n\t/**\n\t * Adds style to the element.\n\t *\n\t *\t\telement.setStyle( 'color', 'red' );\n\t *\t\telement.setStyle( {\n\t *\t\t\tcolor: 'red',\n\t *\t\t\tposition: 'fixed'\n\t *\t\t} );\n\t *\n\t * @param {String|Object} property Property name or object with key - value pairs.\n\t * @param {String} [value] Value to set. This parameter is ignored if object is provided as the first parameter.\n\t * @fires module:engine/view/node~Node#change\n\t */\n\tsetStyle( property, value ) {\n\t\tthis._fireChange( 'attributes', this );\n\n\t\tif ( isPlainObject( property ) ) {\n\t\t\tconst keys = Object.keys( property );\n\n\t\t\tfor ( let key of keys ) {\n\t\t\t\tthis._styles.set( key, property[ key ] );\n\t\t\t}\n\t\t} else {\n\t\t\tthis._styles.set( property, value );\n\t\t}\n\t}\n\n\t/**\n\t * Returns style value for given property.\n\t * Undefined is returned if style does not exist.\n\t *\n\t * @param {String} property\n\t * @returns {String|undefined}\n\t */\n\tgetStyle( property ) {\n\t\treturn this._styles.get( property );\n\t}\n\n\t/**\n\t * Returns iterator that contains all style names.\n\t *\n\t * @returns {Iterator.<String>}\n\t */\n\tgetStyleNames() {\n\t\treturn this._styles.keys();\n\t}\n\n\t/**\n\t * Returns true if style keys are present.\n\t * If more then one style property is provided - returns true only when all properties are present.\n\t *\n\t *\t\telement.hasStyle( 'color' ); // Returns true if 'border-top' style is present.\n\t *\t\telement.hasStyle( 'color', 'border-top' ); // Returns true if 'color' and 'border-top' styles are both present.\n\t *\n\t * @param {...String} property\n\t */\n\thasStyle( ...property ) {\n\t\tfor ( let name of property ) {\n\t\t\tif ( !this._styles.has( name ) ) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t}\n\n\t\treturn true;\n\t}\n\n\t/**\n\t * Removes specified style.\n\t *\n\t *\t\telement.removeStyle( 'color' );  // Removes 'color' style.\n\t *\t\telement.removeStyle( 'color', 'border-top' ); // Removes both 'color' and 'border-top' styles.\n\t *\n\t * @param {...String} property\n\t * @fires module:engine/view/node~Node#change\n\t */\n\tremoveStyle( ...property ) {\n\t\tthis._fireChange( 'attributes', this );\n\t\tproperty.forEach( name => this._styles.delete( name ) );\n\t}\n\n\t/**\n\t * Returns ancestor element that match specified pattern.\n\t * Provided patterns should be compatible with {@link module:engine/view/matcher~Matcher Matcher} as it is used internally.\n\t *\n\t * @see module:engine/view/matcher~Matcher\n\t * @param {Object|String|RegExp|Function} patterns Patterns used to match correct ancestor.\n\t * See {@link module:engine/view/matcher~Matcher}.\n\t * @returns {module:engine/view/element~Element|null} Found element or `null` if no matching ancestor was found.\n\t */\n\tfindAncestor( ...patterns ) {\n\t\tconst matcher = new Matcher( ...patterns );\n\t\tlet parent = this.parent;\n\n\t\twhile ( parent ) {\n\t\t\tif ( matcher.match( parent ) ) {\n\t\t\t\treturn parent;\n\t\t\t}\n\n\t\t\tparent = parent.parent;\n\t\t}\n\n\t\treturn null;\n\t}\n\n\t/**\n\t * Sets a custom property. Unlike attributes, custom properties are not rendered to the DOM,\n\t * so they can be used to add special data to elements.\n\t *\n\t * @param {String|Symbol} key\n\t * @param {*} value\n\t */\n\tsetCustomProperty( key, value ) {\n\t\tthis._customProperties.set( key, value );\n\t}\n\n\t/**\n\t * Returns the custom property value for the given key.\n\t *\n\t * @param {String|Symbol} key\n\t * @returns {*}\n\t */\n\tgetCustomProperty( key ) {\n\t\treturn this._customProperties.get( key );\n\t}\n\n\t/**\n\t * Removes the custom property stored under the given key.\n\t *\n\t * @param {String|Symbol} key\n\t * @returns {Boolean} Returns true if property was removed.\n\t */\n\tremoveCustomProperty( key ) {\n\t\treturn this._customProperties.delete( key );\n\t}\n\n\t/**\n\t * Returns an iterator which iterates over this element's custom properties.\n\t * Iterator provides [key, value] pair for each stored property.\n\t *\n\t * @returns {Iterable.<*>}\n\t */\n\t*getCustomProperties() {\n\t\tyield* this._customProperties.entries();\n\t}\n\n\t/**\n\t * Returns block {@link module:engine/view/filler filler} offset or `null` if block filler is not needed.\n\t *\n\t * @abstract\n\t * @method module:engine/view/element~Element#getFillerOffset\n\t */\n}\n\n// Parses inline styles and puts property - value pairs into styles map.\n// Styles map is cleared before insertion.\n//\n// @param {Map.<String, String>} stylesMap Map to insert parsed properties and values.\n// @param {String} stylesString Styles to parse.\nfunction parseInlineStyles( stylesMap, stylesString ) {\n\tconst regex = /\\s*([^:;\\s]+)\\s*:\\s*([^;]+)\\s*(?=;|$)/g;\n\tlet matchStyle;\n\tstylesMap.clear();\n\n\twhile ( ( matchStyle = regex.exec( stylesString ) ) !== null ) {\n\t\tstylesMap.set( matchStyle[ 1 ], matchStyle[ 2 ].trim() );\n\t}\n}\n\n// Parses class attribute and puts all classes into classes set.\n// Classes set s cleared before insertion.\n//\n// @param {Set.<String>} classesSet Set to insert parsed classes.\n// @param {String} classesString String with classes to parse.\nfunction parseClasses( classesSet, classesString ) {\n\tconst classArray = classesString.split( /\\s+/ );\n\tclassesSet.clear();\n\tclassArray.forEach( name => classesSet.add( name ) );\n}\n\n// Converts strings to Text and non-iterables to arrays.\n//\n// @param {String|module:engine/view/node~Node|Iterable.<String|module:engine/view/node~Node>}\n// @return {Iterable.<module:engine/view/node~Node>}\nfunction normalize( nodes ) {\n\t// Separate condition because string is iterable.\n\tif ( typeof nodes == 'string' ) {\n\t\treturn [ new Text( nodes ) ];\n\t}\n\n\tif ( !isIterable( nodes ) ) {\n\t\tnodes = [ nodes ];\n\t}\n\n\t// Array.from to enable .map() on non-arrays.\n\treturn Array.from( nodes ).map( ( node ) => typeof node == 'string' ? new Text( node ) : node );\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/view/element.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * Set of utils related to keyboard support.\n *\n * @module utils/keyboard\n */\n\nimport CKEditorError from './ckeditorerror';\nimport env from './env';\n\n/**\n * Object with `keyName => keyCode` pairs for a set of known keys.\n *\n * Contains:\n *\n * * `a-z`,\n * * `0-9`,\n * * `f1-f12`,\n * * `arrow(left|up|right|bottom)`,\n * * `backspace`, `delete`, `enter`, `esc`, `tab`,\n * * `ctrl`, `cmd`, `shift`, `alt`.\n */\nexport const keyCodes = generateKnownKeyCodes();\n\n/**\n * Converts a key name or a {@link module:utils/keyboard~KeystrokeInfo keystroke info} into a key code.\n *\n * Note: Key names are matched with {@link module:utils/keyboard~keyCodes} in a case-insensitive way.\n *\n * @param {String|module:utils/keyboard~KeystrokeInfo} Key name (see {@link module:utils/keyboard~keyCodes})\n * or a keystroke data object.\n * @returns {Number} Key or keystroke code.\n */\nexport function getCode( key ) {\n\tlet keyCode;\n\n\tif ( typeof key == 'string' ) {\n\t\tkeyCode = keyCodes[ key.toLowerCase() ];\n\n\t\tif ( !keyCode ) {\n\t\t\t/**\n\t\t\t * Unknown key name. Only key names contained by the {@link module:utils/keyboard~keyCodes} can be used.\n\t\t\t *\n\t\t\t * @errror keyboard-unknown-key\n\t\t\t * @param {String} key\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'keyboard-unknown-key: Unknown key name.', { key } );\n\t\t}\n\t} else {\n\t\tkeyCode = key.keyCode +\n\t\t\t( key.altKey ? keyCodes.alt : 0 ) +\n\t\t\t( key.ctrlKey ? keyCodes.ctrl : 0 ) +\n\t\t\t( key.shiftKey ? keyCodes.shift : 0 );\n\t}\n\n\treturn keyCode;\n}\n\n/**\n * Parses keystroke and returns a keystroke code that will match the code returned by\n * link {@link module:utils/keyboard.getCode} for a corresponding {@link module:utils/keyboard~KeystrokeInfo keystroke info}.\n *\n * The keystroke can be passed in two formats:\n *\n * * as a single string – e.g. `ctrl + A`,\n * * as an array of {@link module:utils/keyboard~keyCodes known key names} and key codes – e.g.:\n *   * `[ 'ctrl', 32 ]` (ctrl + space),\n *   * `[ 'ctrl', 'a' ]` (ctrl + A).\n *\n * Note: Key names are matched with {@link module:utils/keyboard~keyCodes} in a case-insensitive way.\n *\n * Note: Only keystrokes with a single non-modifier key are supported (e.g. `ctrl+A` is OK, but `ctrl+A+B` is not).\n *\n * @param {String|Array.<Number|String>} keystroke Keystroke definition.\n * @returns {Number} Keystroke code.\n */\nexport function parseKeystroke( keystroke ) {\n\tif ( typeof keystroke == 'string' ) {\n\t\tkeystroke = splitKeystrokeText( keystroke );\n\t}\n\n\treturn keystroke\n\t\t.map( key => ( typeof key == 'string' ) ? getCode( key ) : key )\n\t\t.reduce( ( key, sum ) => sum + key, 0 );\n}\n\n/**\n * It translates any keystroke string text like `\"CTRL+A\"` to an\n * environment–specific keystroke, i.e. `\"⌘A\"` on Mac OSX.\n *\n * @param {String} keystroke Keystroke text.\n * @returns {String} Keystroke text specific for the environment.\n */\nexport function getEnvKeystrokeText( keystroke ) {\n\tconst split = splitKeystrokeText( keystroke );\n\n\tif ( env.mac ) {\n\t\tif ( split[ 0 ].toLowerCase() == 'ctrl' ) {\n\t\t\treturn '⌘' + ( split[ 1 ] || '' );\n\t\t}\n\t}\n\n\treturn keystroke;\n}\n\nfunction generateKnownKeyCodes() {\n\tconst keyCodes = {\n\t\tarrowleft: 37,\n\t\tarrowup: 38,\n\t\tarrowright: 39,\n\t\tarrowdown: 40,\n\t\tbackspace: 8,\n\t\tdelete: 46,\n\t\tenter: 13,\n\t\tesc: 27,\n\t\ttab: 9,\n\n\t\t// The idea about these numbers is that they do not collide with any real key codes, so we can use them\n\t\t// like bit masks.\n\t\tctrl: 0x110000,\n\t\t// Has the same code as ctrl, because their behaviour should be unified across the editor.\n\t\t// See http://ckeditor.github.io/editor-recommendations/general-policies#ctrl-vs-cmd\n\t\tcmd: 0x110000,\n\t\tshift: 0x220000,\n\t\talt: 0x440000\n\t};\n\n\t// a-z\n\tfor ( let code = 65; code <= 90; code++ ) {\n\t\tconst letter = String.fromCharCode( code );\n\n\t\tkeyCodes[ letter.toLowerCase() ] = code;\n\t}\n\n\t// 0-9\n\tfor ( let code = 48; code <= 57; code++ ) {\n\t\tkeyCodes[ code - 48 ] = code;\n\t}\n\n\t// F1-F12\n\tfor ( let code = 112; code <= 123; code++ ) {\n\t\tkeyCodes[ 'f' + ( code - 111 ) ] = code;\n\t}\n\n\treturn keyCodes;\n}\n\nfunction splitKeystrokeText( keystroke ) {\n\treturn keystroke.split( /\\s*\\+\\s*/ );\n}\n\n/**\n * Information about a keystroke.\n *\n * @interface module:utils/keyboard~KeystrokeInfo\n */\n\n/**\n * The [key code](https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/keyCode).\n *\n * @member {Number} module:utils/keyboard~KeystrokeInfo#keyCode\n */\n\n/**\n * Whether the <kbd>Alt</kbd> modifier was pressed.\n *\n * @member {Bolean} module:utils/keyboard~KeystrokeInfo#altKey\n */\n\n/**\n * Whether the <kbd>Ctrl</kbd> or <kbd>Cmd</kbd> modifier was pressed.\n *\n * @member {Bolean} module:utils/keyboard~KeystrokeInfo#ctrlKey\n */\n\n/**\n * Whether the <kbd>Shift</kbd> modifier was pressed.\n *\n * @member {Bolean} module:utils/keyboard~KeystrokeInfo#shiftKey\n */\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/keyboard.js","import arrayPush from './_arrayPush';\nimport isFlattenable from './_isFlattenable';\n\n/**\n * The base implementation of `_.flatten` with support for restricting flattening.\n *\n * @private\n * @param {Array} array The array to flatten.\n * @param {number} depth The maximum recursion depth.\n * @param {boolean} [predicate=isFlattenable] The function invoked per iteration.\n * @param {boolean} [isStrict] Restrict to values that pass `predicate` checks.\n * @param {Array} [result=[]] The initial result value.\n * @returns {Array} Returns the new flattened array.\n */\nfunction baseFlatten(array, depth, predicate, isStrict, result) {\n  var index = -1,\n      length = array.length;\n\n  predicate || (predicate = isFlattenable);\n  result || (result = []);\n\n  while (++index < length) {\n    var value = array[index];\n    if (depth > 0 && predicate(value)) {\n      if (depth > 1) {\n        // Recursively flatten arrays (susceptible to call stack limits).\n        baseFlatten(value, depth - 1, predicate, isStrict, result);\n      } else {\n        arrayPush(result, value);\n      }\n    } else if (!isStrict) {\n      result[result.length] = value;\n    }\n  }\n  return result;\n}\n\nexport default baseFlatten;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_baseFlatten.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/text\n */\n\nimport Node from './node';\n\n/**\n * Model text node. Type of {@link module:engine/model/node~Node node} that contains {@link module:engine/model/text~Text#data text data}.\n *\n * **Important:** see {@link module:engine/model/node~Node} to read about restrictions using `Text` and `Node` API.\n *\n * **Note:** keep in mind that `Text` instances might indirectly got removed from model tree when model is changed.\n * This happens when {@link module:engine/model/writer~writer model writer} is used to change model and the text node is merged with\n * another text node. Then, both text nodes are removed and a new text node is inserted into the model. Because of\n * this behavior, keeping references to `Text` is not recommended. Instead, consider creating\n * {@link module:engine/model/liveposition~LivePosition live position} placed before the text node.\n */\nexport default class Text extends Node {\n\t/**\n\t * Creates a text node.\n\t *\n\t * @param {String} data Node's text.\n\t * @param {Object} [attrs] Node's attributes. See {@link module:utils/tomap~toMap} for a list of accepted values.\n\t */\n\tconstructor( data, attrs ) {\n\t\tsuper( attrs );\n\n\t\t/**\n\t\t * Text data contained in this text node.\n\t\t *\n\t\t * @type {String}\n\t\t */\n\t\tthis.data = data || '';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tget offsetSize() {\n\t\treturn this.data.length;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tis( type ) {\n\t\treturn type == 'text';\n\t}\n\n\t/**\n\t * Creates a copy of this text node and returns it. Created text node has same text data and attributes as original text node.\n\t */\n\tclone() {\n\t\treturn new Text( this.data, this.getAttributes() );\n\t}\n\n\t/**\n\t * Converts `Text` instance to plain object and returns it.\n\t *\n\t * @returns {Object} `Text` instance converted to plain object.\n\t */\n\ttoJSON() {\n\t\tlet json = super.toJSON();\n\n\t\tjson.data = this.data;\n\n\t\treturn json;\n\t}\n\n\t/**\n\t * Creates a `Text` instance from given plain object (i.e. parsed JSON string).\n\t *\n\t * @param {Object} json Plain object to be converted to `Text`.\n\t * @returns {module:engine/model/text~Text} `Text` instance created using given plain object.\n\t */\n\tstatic fromJSON( json ) {\n\t\treturn new Text( json.data, json.attributes );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/text.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/position\n */\n\nimport TreeWalker from './treewalker';\n\nimport compareArrays from '@ckeditor/ckeditor5-utils/src/comparearrays';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\nimport EditableElement from './editableelement';\n\n/**\n * Position in the tree. Position is always located before or after a node.\n */\nexport default class Position {\n\t/**\n\t * Creates a position.\n\t *\n\t * @param {module:engine/view/node~Node|module:engine/view/documentfragment~DocumentFragment} parent Position parent.\n\t * @param {Number} offset Position offset.\n\t */\n\tconstructor( parent, offset ) {\n\t\t/**\n\t\t * Position parent.\n\t\t *\n\t\t * @member {module:engine/view/node~Node|module:engine/view/documentfragment~DocumentFragment}\n\t\t * module:engine/view/position~Position#parent\n\t\t */\n\t\tthis.parent = parent;\n\n\t\t/**\n\t\t * Position offset.\n\t\t *\n\t\t * @member {Number} module:engine/view/position~Position#offset\n\t\t */\n\t\tthis.offset = offset;\n\t}\n\n\t/**\n\t * Node directly after the position. Equals `null` when there is no node after position or position is located\n\t * inside text node.\n\t *\n\t * @readonly\n\t * @type {module:engine/view/node~Node|null}\n\t */\n\tget nodeAfter() {\n\t\tif ( this.parent.is( 'text' ) ) {\n\t\t\treturn null;\n\t\t}\n\n\t\treturn this.parent.getChild( this.offset ) || null;\n\t}\n\n\t/**\n\t * Node directly before the position. Equals `null` when there is no node before position or position is located\n\t * inside text node.\n\t *\n\t * @readonly\n\t * @type {module:engine/view/node~Node|null}\n\t */\n\tget nodeBefore() {\n\t\tif ( this.parent.is( 'text' ) ) {\n\t\t\treturn null;\n\t\t}\n\n\t\treturn this.parent.getChild( this.offset - 1 ) || null;\n\t}\n\n\t/**\n\t * Is `true` if position is at the beginning of its {@link module:engine/view/position~Position#parent parent}, `false` otherwise.\n\t *\n\t * @readonly\n\t * @type {Boolean}\n\t */\n\tget isAtStart() {\n\t\treturn this.offset === 0;\n\t}\n\n\t/**\n\t * Is `true` if position is at the end of its {@link module:engine/view/position~Position#parent parent}, `false` otherwise.\n\t *\n\t * @readonly\n\t * @type {Boolean}\n\t */\n\tget isAtEnd() {\n\t\tconst endOffset = this.parent.is( 'text' ) ? this.parent.data.length : this.parent.childCount;\n\n\t\treturn this.offset === endOffset;\n\t}\n\n\t/**\n\t * Position's root, that is the root of the position's parent element.\n\t *\n\t * @readonly\n\t * @type {module:engine/view/node~Node|module:engine/view/documentfragment~DocumentFragment}\n\t */\n\tget root() {\n\t\treturn this.parent.root;\n\t}\n\n\t/**\n\t * {@link module:engine/view/editableelement~EditableElement EditableElement} instance that contains this position, or `null` if\n\t * position is not inside an editable element.\n\t *\n\t * @type {module:engine/view/editableelement~EditableElement|null}\n\t */\n\tget editableElement() {\n\t\tlet editable = this.parent;\n\n\t\twhile ( !( editable instanceof EditableElement ) ) {\n\t\t\tif ( editable.parent ) {\n\t\t\t\teditable = editable.parent;\n\t\t\t} else {\n\t\t\t\treturn null;\n\t\t\t}\n\t\t}\n\n\t\treturn editable;\n\t}\n\n\t/**\n\t * Returns a new instance of Position with offset incremented by `shift` value.\n\t *\n\t * @param {Number} shift How position offset should get changed. Accepts negative values.\n\t * @returns {module:engine/view/position~Position} Shifted position.\n\t */\n\tgetShiftedBy( shift ) {\n\t\tlet shifted = Position.createFromPosition( this );\n\n\t\tlet offset = shifted.offset + shift;\n\t\tshifted.offset = offset < 0 ? 0 : offset;\n\n\t\treturn shifted;\n\t}\n\n\t/**\n\t * Gets the farthest position which matches the callback using\n\t * {@link module:engine/view/treewalker~TreeWalker TreeWalker}.\n\t *\n\t * For example:\n\t *\n\t * \t\tgetLastMatchingPosition( value => value.type == 'text' ); // <p>{}foo</p> -> <p>foo[]</p>\n\t * \t\tgetLastMatchingPosition( value => value.type == 'text', { direction: 'backward' } ); // <p>foo[]</p> -> <p>{}foo</p>\n\t * \t\tgetLastMatchingPosition( value => false ); // Do not move the position.\n\t *\n\t * @param {Function} skip Callback function. Gets {@link module:engine/view/treewalker~TreeWalkerValue} and should\n\t * return `true` if the value should be skipped or `false` if not.\n\t * @param {Object} options Object with configuration options. See {@link module:engine/view/treewalker~TreeWalker}.\n\t *\n\t * @returns {module:engine/view/position~Position} The position after the last item which matches the `skip` callback test.\n\t */\n\tgetLastMatchingPosition( skip, options = {} ) {\n\t\toptions.startPosition = this;\n\n\t\tconst treeWalker = new TreeWalker( options );\n\t\ttreeWalker.skip( skip );\n\n\t\treturn treeWalker.position;\n\t}\n\n\t/**\n\t * Returns ancestors array of this position, that is this position's parent and it's ancestors.\n\t *\n\t * @returns {Array} Array with ancestors.\n\t */\n\tgetAncestors() {\n\t\tif ( this.parent.is( 'documentFragment' ) ) {\n\t\t\treturn [ this.parent ];\n\t\t} else {\n\t\t\treturn this.parent.getAncestors( { includeNode: true } );\n\t\t}\n\t}\n\n\t/**\n\t * Checks whether this position equals given position.\n\t *\n\t * @param {module:engine/view/position~Position} otherPosition Position to compare with.\n\t * @returns {Boolean} True if positions are same.\n\t */\n\tisEqual( otherPosition ) {\n\t\treturn ( this.parent == otherPosition.parent && this.offset == otherPosition.offset );\n\t}\n\n\t/**\n\t * Checks whether this position is located before given position. When method returns `false` it does not mean that\n\t * this position is after give one. Two positions may be located inside separate roots and in that situation this\n\t * method will still return `false`.\n\t *\n\t * @see module:engine/view/position~Position#isAfter\n\t * @see module:engine/view/position~Position#compareWith\n\t * @param {module:engine/view/position~Position} otherPosition Position to compare with.\n\t * @returns {Boolean} Returns `true` if this position is before given position.\n\t */\n\tisBefore( otherPosition ) {\n\t\treturn this.compareWith( otherPosition ) == 'before';\n\t}\n\n\t/**\n\t * Checks whether this position is located after given position. When method returns `false` it does not mean that\n\t * this position is before give one. Two positions may be located inside separate roots and in that situation this\n\t * method will still return `false`.\n\t *\n\t * @see module:engine/view/position~Position#isBefore\n\t * @see module:engine/view/position~Position#compareWith\n\t * @param {module:engine/view/position~Position} otherPosition Position to compare with.\n\t * @returns {Boolean} Returns `true` if this position is after given position.\n\t */\n\tisAfter( otherPosition ) {\n\t\treturn this.compareWith( otherPosition ) == 'after';\n\t}\n\n\t/**\n\t * Checks whether this position is before, after or in same position that other position. Two positions may be also\n\t * different when they are located in separate roots.\n\t *\n\t * @param {module:engine/view/position~Position} otherPosition Position to compare with.\n\t * @returns {module:engine/view/position~PositionRelation}\n\t */\n\tcompareWith( otherPosition ) {\n\t\tif ( this.isEqual( otherPosition ) ) {\n\t\t\treturn 'same';\n\t\t}\n\n\t\t// If positions have same parent.\n\t\tif ( this.parent === otherPosition.parent ) {\n\t\t\treturn this.offset - otherPosition.offset < 0 ? 'before' : 'after';\n\t\t}\n\n\t\t// Get path from root to position's parent element.\n\t\tconst path = this.getAncestors();\n\t\tconst otherPath = otherPosition.getAncestors();\n\n\t\t// Compare both path arrays to find common ancestor.\n\t\tconst result = compareArrays( path, otherPath );\n\n\t\tlet commonAncestorIndex;\n\n\t\tswitch ( result ) {\n\t\t\tcase 0:\n\t\t\t\t// No common ancestors found.\n\t\t\t\treturn 'different';\n\n\t\t\tcase 'prefix':\n\t\t\t\tcommonAncestorIndex = path.length - 1;\n\t\t\t\tbreak;\n\n\t\t\tcase 'extension':\n\t\t\t\tcommonAncestorIndex = otherPath.length - 1;\n\t\t\t\tbreak;\n\n\t\t\tdefault:\n\t\t\t\tcommonAncestorIndex = result - 1;\n\t\t}\n\n\t\t// Common ancestor of two positions.\n\t\tconst commonAncestor = path[ commonAncestorIndex ];\n\t\tconst nextAncestor1 = path[ commonAncestorIndex + 1 ];\n\t\tconst nextAncestor2 = otherPath[ commonAncestorIndex + 1 ];\n\n\t\t// Check if common ancestor is not one of the parents.\n\t\tif ( commonAncestor === this.parent ) {\n\t\t\tconst index = this.offset - nextAncestor2.index;\n\n\t\t\treturn index <= 0 ? 'before' : 'after';\n\t\t} else if ( commonAncestor === otherPosition.parent ) {\n\t\t\tconst index = nextAncestor1.index - otherPosition.offset;\n\n\t\t\treturn index < 0 ? 'before' : 'after';\n\t\t}\n\n\t\tconst index = nextAncestor1.index - nextAncestor2.index;\n\n\t\t// Compare indexes of next ancestors inside common one.\n\t\treturn index < 0 ? 'before' : 'after';\n\t}\n\n\t/**\n\t * Creates position at the given location. The location can be specified as:\n\t *\n\t * * a {@link module:engine/view/position~Position position},\n\t * * parent element and offset (offset defaults to `0`),\n\t * * parent element and `'end'` (sets position at the end of that element),\n\t * * {@link module:engine/view/item~Item view item} and `'before'` or `'after'` (sets position before or after given view item).\n\t *\n\t * This method is a shortcut to other constructors such as:\n\t *\n\t * * {@link module:engine/view/position~Position.createBefore},\n\t * * {@link module:engine/view/position~Position.createAfter},\n\t * * {@link module:engine/view/position~Position.createFromPosition}.\n\t *\n\t * @param {module:engine/view/item~Item|module:engine/model/position~Position} itemOrPosition\n\t * @param {Number|'end'|'before'|'after'} [offset=0] Offset or one of the flags. Used only when\n\t * first parameter is a {@link module:engine/view/item~Item view item}.\n\t */\n\tstatic createAt( itemOrPosition, offset ) {\n\t\tif ( itemOrPosition instanceof Position ) {\n\t\t\treturn this.createFromPosition( itemOrPosition );\n\t\t} else {\n\t\t\tlet node = itemOrPosition;\n\n\t\t\tif ( offset == 'end' ) {\n\t\t\t\toffset = node.is( 'text' ) ? node.data.length : node.childCount;\n\t\t\t} else if ( offset == 'before' ) {\n\t\t\t\treturn this.createBefore( node );\n\t\t\t} else if ( offset == 'after' ) {\n\t\t\t\treturn this.createAfter( node );\n\t\t\t} else if ( !offset ) {\n\t\t\t\toffset = 0;\n\t\t\t}\n\n\t\t\treturn new Position( node, offset );\n\t\t}\n\t}\n\n\t/**\n\t * Creates a new position after given view item.\n\t *\n\t * @param {module:engine/view/item~Item} item View item after which the position should be located.\n\t * @returns {module:engine/view/position~Position}\n\t */\n\tstatic createAfter( item ) {\n\t\t// TextProxy is not a instance of Node so we need do handle it in specific way.\n\t\tif ( item.is( 'textProxy' ) ) {\n\t\t\treturn new Position( item.textNode, item.offsetInText + item.data.length );\n\t\t}\n\n\t\tif ( !item.parent ) {\n\t\t\t/**\n\t\t\t * You can not make a position after a root.\n\t\t\t *\n\t\t\t * @error position-after-root\n\t\t\t * @param {module:engine/view/node~Node} root\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'view-position-after-root: You can not make position after root.', { root: item } );\n\t\t}\n\n\t\treturn new Position( item.parent, item.index + 1 );\n\t}\n\n\t/**\n\t * Creates a new position before given view item.\n\t *\n\t * @param {module:engine/view/item~Item} item View item before which the position should be located.\n\t * @returns {module:engine/view/position~Position}\n\t */\n\tstatic createBefore( item ) {\n\t\t// TextProxy is not a instance of Node so we need do handle it in specific way.\n\t\tif ( item.is( 'textProxy' ) ) {\n\t\t\treturn new Position( item.textNode, item.offsetInText );\n\t\t}\n\n\t\tif ( !item.parent ) {\n\t\t\t/**\n\t\t\t * You cannot make a position before a root.\n\t\t\t *\n\t\t\t * @error position-before-root\n\t\t\t * @param {module:engine/view/node~Node} root\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'view-position-before-root: You can not make position before root.', { root: item } );\n\t\t}\n\n\t\treturn new Position( item.parent, item.index );\n\t}\n\n\t/**\n\t * Creates and returns a new instance of `Position`, which is equal to the passed position.\n\t *\n\t * @param {module:engine/view/position~Position} position Position to be cloned.\n\t * @returns {module:engine/view/position~Position}\n\t */\n\tstatic createFromPosition( position ) {\n\t\treturn new this( position.parent, position.offset );\n\t}\n}\n\n/**\n * A flag indicating whether this position is `'before'` or `'after'` or `'same'` as given position.\n * If positions are in different roots `'different'` flag is returned.\n *\n * @typedef {String} module:engine/view/position~PositionRelation\n */\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/view/position.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/button/buttonview\n */\n\nimport View from '../view';\nimport Template from '../template';\nimport IconView from '../icon/iconview';\n\nimport { getEnvKeystrokeText } from '@ckeditor/ckeditor5-utils/src/keyboard';\n\n/**\n * The button view class.\n *\n * @extends module:ui/view~View\n */\nexport default class ButtonView extends View {\n\t/**\n\t * @inheritDoc\n\t */\n\tconstructor( locale ) {\n\t\tsuper( locale );\n\n\t\t/**\n\t\t * The label of the button view visible to the user.\n\t\t *\n\t\t * @observable\n\t\t * @member {String} #label\n\t\t */\n\t\tthis.set( 'label' );\n\n\t\t/**\n\t\t * (Optional) The keystroke associated with the button, i.e. <kbd>CTRL+B</kbd>,\n\t\t * in the string format compatible with {@link module:utils/keyboard}.\n\t\t *\n\t\t * @observable\n\t\t * @member {Boolean} #keystroke\n\t\t */\n\t\tthis.set( 'keystroke' );\n\n\t\t/**\n\t\t * (Optional) Tooltip of the button, i.e. displayed when hovering the button with the mouse cursor.\n\t\t *\n\t\t * * If defined as a `Boolean` (e.g. `true`), then combination of `label` and `keystroke` will be set as a tooltip.\n\t\t * * If defined as a `String`, tooltip will equal the exact text of that `String`.\n\t\t * * If defined as a `Function`, `label` and `keystroke` will be passed to that function, which is to return\n\t\t * a string with the tooltip text.\n\t\t *\n\t\t *\t\tconst view = new ButtonView( locale );\n\t\t *\t\tview.tooltip = ( label, keystroke ) => `A tooltip for ${ label } and ${ keystroke }.`\n\t\t *\n\t\t * @observable\n\t\t * @default false\n\t\t * @member {Boolean|String|Function} #tooltip\n\t\t */\n\t\tthis.set( 'tooltip' );\n\n\t\t/**\n\t\t * The HTML type of the button. Default `button`.\n\t\t *\n\t\t * @observable\n\t\t * @member {'button'|'submit'|'reset'|'menu'} #type\n\t\t */\n\t\tthis.set( 'type', 'button' );\n\n\t\t/**\n\t\t * Controls whether the button view is \"on\", e.g. some feature which it represents\n\t\t * is currently enabled.\n\t\t *\n\t\t * @observable\n\t\t * @member {Boolean} #isOn\n\t\t */\n\t\tthis.set( 'isOn', false );\n\n\t\t/**\n\t\t * Controls whether the button view is enabled (can be clicked).\n\t\t *\n\t\t * @observable\n\t\t * @member {Boolean} #isEnabled\n\t\t */\n\t\tthis.set( 'isEnabled', true );\n\n\t\t/**\n\t\t * (Optional) Whether the label of the button is hidden (e.g. button with icon only).\n\t\t *\n\t\t * @observable\n\t\t * @member {Boolean} #withText\n\t\t */\n\t\tthis.set( 'withText', false );\n\n\t\t/**\n\t\t * (Optional) Source of the icon. See {@link module:ui/icon/iconview~IconView#content}.\n\t\t *\n\t\t * @observable\n\t\t * @member {String} #icon\n\t\t */\n\t\tthis.set( 'icon' );\n\n\t\t/**\n\t\t * Controls the `tabindex` attribute of the button.\n\t\t *\n\t\t * @observable\n\t\t * @default -1\n\t\t * @member {String} #tabindex\n\t\t */\n\t\tthis.set( 'tabindex', -1 );\n\n\t\t/**\n\t\t * Tooltip of the button bound to the template.\n\t\t *\n\t\t * @see #tooltip\n\t\t * @see #_getTooltipString\n\t\t * @private\n\t\t * @observable\n\t\t * @member {Boolean} #_tooltipString\n\t\t */\n\t\tthis.bind( '_tooltipString' ).to(\n\t\t\tthis, 'tooltip',\n\t\t\tthis, 'label',\n\t\t\tthis, 'keystroke',\n\t\t\tthis._getTooltipString.bind( this )\n\t\t);\n\n\t\t/**\n\t\t * Icon of the button view.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:ui/icon/iconview~IconView} #iconView\n\t\t */\n\n\t\tconst bind = this.bindTemplate;\n\n\t\tthis.template = new Template( {\n\t\t\ttag: 'button',\n\n\t\t\tattributes: {\n\t\t\t\tclass: [\n\t\t\t\t\t'ck-button',\n\t\t\t\t\tbind.if( '_tooltipString', 'ck-tooltip_s' ),\n\t\t\t\t\tbind.to( 'isEnabled', value => value ? 'ck-enabled' : 'ck-disabled' ),\n\t\t\t\t\tbind.to( 'isOn', value => value ? 'ck-on' : 'ck-off' ),\n\t\t\t\t\tbind.if( 'withText', 'ck-button_with-text' )\n\t\t\t\t],\n\t\t\t\ttype: bind.to( 'type', value => value ? value : 'button' ),\n\t\t\t\t'data-ck-tooltip': [\n\t\t\t\t\tbind.to( '_tooltipString' )\n\t\t\t\t],\n\t\t\t\ttabindex: bind.to( 'tabindex' )\n\t\t\t},\n\n\t\t\tchildren: [\n\t\t\t\t{\n\t\t\t\t\ttag: 'span',\n\n\t\t\t\t\tattributes: {\n\t\t\t\t\t\tclass: [ 'ck-button__label' ]\n\t\t\t\t\t},\n\n\t\t\t\t\tchildren: [\n\t\t\t\t\t\t{\n\t\t\t\t\t\t\ttext: bind.to( 'label' )\n\t\t\t\t\t\t}\n\t\t\t\t\t]\n\t\t\t\t}\n\t\t\t],\n\n\t\t\ton: {\n\t\t\t\tmousedown: bind.to( evt => {\n\t\t\t\t\tevt.preventDefault();\n\t\t\t\t} ),\n\n\t\t\t\tclick: bind.to( evt => {\n\t\t\t\t\t// We can't make the button disabled using the disabled attribute, because it won't be focusable.\n\t\t\t\t\t// Though, shouldn't this condition be moved to the button controller?\n\t\t\t\t\tif ( this.isEnabled ) {\n\t\t\t\t\t\tthis.fire( 'execute' );\n\t\t\t\t\t} else {\n\t\t\t\t\t\t// Prevent the default when button is disabled, to block e.g.\n\t\t\t\t\t\t// automatic form submitting. See ckeditor/ckeditor5-link#74.\n\t\t\t\t\t\tevt.preventDefault();\n\t\t\t\t\t}\n\t\t\t\t} )\n\t\t\t}\n\t\t} );\n\n\t\t/**\n\t\t * Fired when the button view is clicked. It won't be fired when the button is disabled.\n\t\t *\n\t\t * @event #execute\n\t\t */\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tlet promise = Promise.resolve();\n\n\t\tif ( this.icon && !this.iconView ) {\n\t\t\tconst iconView = this.iconView = new IconView();\n\n\t\t\ticonView.bind( 'content' ).to( this, 'icon' );\n\n\t\t\tthis.element.insertBefore( iconView.element, this.element.firstChild );\n\n\t\t\t// Make sure the icon view will be destroyed along with button.\n\t\t\tpromise = promise.then( () => this.addChildren( iconView ) );\n\t\t}\n\n\t\treturn promise.then( () => super.init() );\n\t}\n\n\t/**\n\t * Focuses the button.\n\t */\n\tfocus() {\n\t\tthis.element.focus();\n\t}\n\n\t/**\n\t * Gets value for the `data-ck-tooltip` attribute from the combination of\n\t * {@link #tooltip}, {@link #label} and {@link #keystroke} attributes.\n\t *\n\t * @private\n\t * @see #tooltip\n\t * @see #_tooltipString\n\t * @param {Boolean|String|Function} tooltip Button tooltip.\n\t * @param {String} label Button label.\n\t * @param {String} keystroke Button keystroke.\n\t * @returns {String}\n\t */\n\t_getTooltipString( tooltip, label, keystroke ) {\n\t\tif ( tooltip ) {\n\t\t\tif ( typeof tooltip == 'string' ) {\n\t\t\t\treturn tooltip;\n\t\t\t} else {\n\t\t\t\tif ( keystroke ) {\n\t\t\t\t\tkeystroke = getEnvKeystrokeText( keystroke );\n\t\t\t\t}\n\n\t\t\t\tif ( tooltip instanceof Function ) {\n\t\t\t\t\treturn tooltip( label, keystroke );\n\t\t\t\t} else if ( tooltip === true ) {\n\t\t\t\t\treturn `${ label }${ keystroke ? ` (${ keystroke })` : '' }`;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn false;\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-ui/src/button/buttonview.js","/**\n * A specialized version of `_.map` for arrays without support for iteratee\n * shorthands.\n *\n * @private\n * @param {Array} array The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array} Returns the new mapped array.\n */\nfunction arrayMap(array, iteratee) {\n  var index = -1,\n      length = array.length,\n      result = Array(length);\n\n  while (++index < length) {\n    result[index] = iteratee(array[index], index, array);\n  }\n  return result;\n}\n\nexport default arrayMap;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_arrayMap.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/operation/moveoperation\n */\n\nimport Operation from './operation';\nimport Position from '../position';\nimport Range from '../range';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\nimport compareArrays from '@ckeditor/ckeditor5-utils/src/comparearrays';\nimport writer from './../writer';\n\n/**\n * Operation to move a range of {@link module:engine/model/item~Item model items}\n * to given {@link module:engine/model/position~Position target position}.\n */\nexport default class MoveOperation extends Operation {\n\t/**\n\t * Creates a move operation.\n\t *\n\t * @param {module:engine/model/position~Position} sourcePosition\n\t * Position before the first {@link module:engine/model/item~Item model item} to move.\n\t * @param {Number} howMany Offset size of moved range. Moved range will start from `sourcePosition` and end at\n\t * `sourcePosition` with offset shifted by `howMany`.\n\t * @param {module:engine/model/position~Position} targetPosition Position at which moved nodes will be inserted.\n\t * @param {Number} baseVersion {@link module:engine/model/document~Document#version} on which operation can be applied.\n\t */\n\tconstructor( sourcePosition, howMany, targetPosition, baseVersion ) {\n\t\tsuper( baseVersion );\n\n\t\t/**\n\t\t * Position before the first {@link module:engine/model/item~Item model item} to move.\n\t\t *\n\t\t * @member {module:engine/model/position~Position} module:engine/model/operation/moveoperation~MoveOperation#sourcePosition\n\t\t */\n\t\tthis.sourcePosition = Position.createFromPosition( sourcePosition );\n\n\t\t/**\n\t\t * Offset size of moved range.\n\t\t *\n\t\t * @member {Number} module:engine/model/operation/moveoperation~MoveOperation#howMany\n\t\t */\n\t\tthis.howMany = howMany;\n\n\t\t/**\n\t\t * Position at which moved nodes will be inserted.\n\t\t *\n\t\t * @member {module:engine/model/position~Position} module:engine/model/operation/moveoperation~MoveOperation#targetPosition\n\t\t */\n\t\tthis.targetPosition = Position.createFromPosition( targetPosition );\n\n\t\t/**\n\t\t * Defines whether `MoveOperation` is sticky. If `MoveOperation` is sticky, during\n\t\t * {@link module:engine/model/operation/transform~transform operational transformation} if there will be an operation that\n\t\t * inserts some nodes at the position equal to the boundary of this `MoveOperation`, that operation will\n\t\t * get their insertion path updated to the position where this `MoveOperation` moves the range.\n\t\t *\n\t\t * @member {Boolean} module:engine/model/operation/moveoperation~MoveOperation#isSticky\n\t\t */\n\t\tthis.isSticky = false;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tget type() {\n\t\treturn 'move';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t * @returns {module:engine/model/operation/moveoperation~MoveOperation}\n\t */\n\tclone() {\n\t\tconst op = new this.constructor( this.sourcePosition, this.howMany, this.targetPosition, this.baseVersion );\n\t\top.isSticky = this.isSticky;\n\n\t\treturn op;\n\t}\n\n\t/**\n\t * Returns the start position of the moved range after it got moved. This may be different than\n\t * {@link module:engine/model/operation/moveoperation~MoveOperation#targetPosition} in some cases, i.e. when a range is moved\n\t * inside the same parent but {@link module:engine/model/operation/moveoperation~MoveOperation#targetPosition targetPosition}\n\t * is after {@link module:engine/model/operation/moveoperation~MoveOperation#sourcePosition sourcePosition}.\n\t *\n\t *\t\t vv              vv\n\t *\t\tabcdefg ===> adefbcg\n\t *\t\t     ^          ^\n\t *\t\t     targetPos\tmovedRangeStart\n\t *\t\t     offset 6\toffset 4\n\t *\n\t * @returns {module:engine/model/position~Position}\n\t */\n\tgetMovedRangeStart() {\n\t\treturn this.targetPosition._getTransformedByDeletion( this.sourcePosition, this.howMany );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t * @returns {module:engine/model/operation/moveoperation~MoveOperation}\n\t */\n\tgetReversed() {\n\t\tlet newTargetPosition = this.sourcePosition._getTransformedByInsertion( this.targetPosition, this.howMany );\n\n\t\tconst op = new this.constructor( this.getMovedRangeStart(), this.howMany, newTargetPosition, this.baseVersion + 1 );\n\t\top.isSticky = this.isSticky;\n\n\t\treturn op;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\t_execute() {\n\t\tlet sourceElement = this.sourcePosition.parent;\n\t\tlet targetElement = this.targetPosition.parent;\n\t\tlet sourceOffset = this.sourcePosition.offset;\n\t\tlet targetOffset = this.targetPosition.offset;\n\n\t\t// Validate whether move operation has correct parameters.\n\t\t// Validation is pretty complex but move operation is one of the core ways to manipulate the document state.\n\t\t// We expect that many errors might be connected with one of scenarios described below.\n\t\tif ( !sourceElement || !targetElement ) {\n\t\t\t/**\n\t\t\t * Source position or target position is invalid.\n\t\t\t *\n\t\t\t * @error move-operation-position-invalid\n\t\t\t */\n\t\t\tthrow new CKEditorError(\n\t\t\t\t'move-operation-position-invalid: Source position or target position is invalid.'\n\t\t\t);\n\t\t} else if ( sourceOffset + this.howMany > sourceElement.maxOffset ) {\n\t\t\t/**\n\t\t\t * The nodes which should be moved do not exist.\n\t\t\t *\n\t\t\t * @error move-operation-nodes-do-not-exist\n\t\t\t */\n\t\t\tthrow new CKEditorError(\n\t\t\t\t'move-operation-nodes-do-not-exist: The nodes which should be moved do not exist.'\n\t\t\t);\n\t\t} else if ( sourceElement === targetElement && sourceOffset < targetOffset && targetOffset < sourceOffset + this.howMany ) {\n\t\t\t/**\n\t\t\t * Trying to move a range of nodes into the middle of that range.\n\t\t\t *\n\t\t\t * @error move-operation-range-into-itself\n\t\t\t */\n\t\t\tthrow new CKEditorError(\n\t\t\t\t'move-operation-range-into-itself: Trying to move a range of nodes to the inside of that range.'\n\t\t\t);\n\t\t} else if ( this.sourcePosition.root == this.targetPosition.root ) {\n\t\t\tif ( compareArrays( this.sourcePosition.getParentPath(), this.targetPosition.getParentPath() ) == 'prefix' ) {\n\t\t\t\tlet i = this.sourcePosition.path.length - 1;\n\n\t\t\t\tif ( this.targetPosition.path[ i ] >= sourceOffset && this.targetPosition.path[ i ] < sourceOffset + this.howMany ) {\n\t\t\t\t\t/**\n\t\t\t\t\t * Trying to move a range of nodes into one of nodes from that range.\n\t\t\t\t\t *\n\t\t\t\t\t * @error move-operation-node-into-itself\n\t\t\t\t\t */\n\t\t\t\t\tthrow new CKEditorError(\n\t\t\t\t\t\t'move-operation-node-into-itself: Trying to move a range of nodes into one of nodes from that range.'\n\t\t\t\t\t);\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\tconst range = writer.move( Range.createFromPositionAndShift( this.sourcePosition, this.howMany ), this.targetPosition );\n\n\t\treturn {\n\t\t\tsourcePosition: this.sourcePosition,\n\t\t\trange: range\n\t\t};\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.operation.MoveOperation';\n\t}\n\n\t/**\n\t * Creates `MoveOperation` object from deserilized object, i.e. from parsed JSON string.\n\t *\n\t * @param {Object} json Deserialized JSON object.\n\t * @param {module:engine/model/document~Document} document Document on which this operation will be applied.\n\t * @returns {module:engine/model/operation/moveoperation~MoveOperation}\n\t */\n\tstatic fromJSON( json, document ) {\n\t\tlet sourcePosition = Position.fromJSON( json.sourcePosition, document );\n\t\tlet targetPosition = Position.fromJSON( json.targetPosition, document );\n\n\t\tconst move = new this( sourcePosition, json.howMany, targetPosition, json.baseVersion );\n\n\t\tif ( json.isSticky ) {\n\t\t\tmove.isSticky = true;\n\t\t}\n\n\t\treturn move;\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/operation/moveoperation.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/writer\n */\n\nimport Node from './node';\nimport Text from './text';\nimport TextProxy from './textproxy';\nimport Range from './range';\nimport DocumentFragment from './documentfragment';\nimport NodeList from './nodelist';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/**\n * Contains functions used for composing model tree, grouped together under \"model writer\" name. Those functions\n * are built on top of {@link module:engine/model/node~Node node}, and it's child classes', APIs.\n *\n * Model writer API has multiple advantages and it is highly recommended to use it when changing model tree and nodes:\n * * model writer API {@link module:engine/model/writer~writer.normalizeNodes normalizes inserted nodes}, which means that you can insert\n * not only {@link module:engine/model/node~Node nodes}, but also `String`s, {@link module:engine/model/textproxy~TextProxy text proxies}\n * and\n * {@link module:engine/model/documentfragment~DocumentFragment document fragments},\n * * model writer API operates on {@link module:engine/model/position~Position positions}, which means that you have\n * better control over manipulating model tree as positions operate on offsets rather than indexes,\n * * model writer API automatically merges {@link module:engine/model/text~Text text nodes} with same attributes, which means\n * lower memory usage and better efficiency.\n *\n * @namespace writer\n */\nconst writer = {\n\tinsert,\n\tremove,\n\tmove,\n\tsetAttribute,\n\tremoveAttribute,\n\tnormalizeNodes\n};\n\nexport default writer;\n\n/**\n * Inserts given nodes at given position.\n *\n * @function module:engine/model/writer~writer.insert\n * @param {module:engine/model/position~Position} position Position at which nodes should be inserted.\n * @param {module:engine/model/node~NodeSet} nodes Nodes to insert.\n * @returns {module:engine/model/range~Range} Range spanning over inserted elements.\n */\nexport function insert( position, nodes ) {\n\tnodes = normalizeNodes( nodes );\n\n\t// We have to count offset before inserting nodes because they can get merged and we would get wrong offsets.\n\tconst offset = nodes.reduce( ( sum, node ) => sum + node.offsetSize, 0 );\n\tconst parent = position.parent;\n\n\t// Insertion might be in a text node, we should split it if that's the case.\n\t_splitNodeAtPosition( position );\n\tconst index = position.index;\n\n\t// Insert nodes at given index. After splitting we have a proper index and insertion is between nodes,\n\t// using basic `Element` API.\n\tparent.insertChildren( index, nodes );\n\n\t// Merge text nodes, if possible. Merging is needed only at points where inserted nodes \"touch\" \"old\" nodes.\n\t_mergeNodesAtIndex( parent, index + nodes.length );\n\t_mergeNodesAtIndex( parent, index );\n\n\treturn new Range( position, position.getShiftedBy( offset ) );\n}\n\n/**\n * Removed nodes in given range. Only {@link module:engine/model/range~Range#isFlat flat} ranges are accepted.\n *\n * @function module:engine/model/writer~writer.remove\n * @param {module:engine/model/range~Range} range Range containing nodes to remove.\n * @returns {Array.<module:engine/model/node~Node>}\n */\nexport function remove( range ) {\n\tif ( !range.isFlat ) {\n\t\t/**\n\t\t * Trying to remove a range that starts and ends in different element.\n\t\t *\n\t\t * @error model-writer-remove-range-not-flat\n\t\t */\n\t\tthrow new CKEditorError( 'model-writer-remove-range-not-flat: ' +\n\t\t\t'Trying to remove a range that starts and ends in different element.' );\n\t}\n\n\tconst parent = range.start.parent;\n\n\t// Range may be inside text nodes, we have to split them if that's the case.\n\t_splitNodeAtPosition( range.start );\n\t_splitNodeAtPosition( range.end );\n\n\t// Remove the text nodes using basic `Element` API.\n\tconst removed = parent.removeChildren( range.start.index, range.end.index - range.start.index );\n\n\t// Merge text nodes, if possible. After some nodes were removed, node before and after removed range will be\n\t// touching at the position equal to the removed range beginning. We check merging possibility there.\n\t_mergeNodesAtIndex( parent, range.start.index );\n\n\treturn removed;\n}\n\n/**\n * Moves nodes in given range to given target position. Only {@link module:engine/model/range~Range#isFlat flat} ranges are accepted.\n *\n * @param {module:engine/model/range~Range} sourceRange Range containing nodes to move.\n * @param {module:engine/model/position~Position} targetPosition Position to which nodes should be moved.\n * @returns {module:engine/model/range~Range} Range containing moved nodes.\n */\nexport function move( sourceRange, targetPosition ) {\n\t/* jshint validthis:true */\n\tif ( !sourceRange.isFlat ) {\n\t\t/**\n\t\t * Trying to move a range that starts and ends in different element.\n\t\t *\n\t\t * @error model-writer-move-range-not-flat\n\t\t */\n\t\tthrow new CKEditorError( 'model-writer-move-range-not-flat: ' +\n\t\t\t'Trying to move a range that starts and ends in different element.' );\n\t}\n\n\tconst nodes = this.remove( sourceRange );\n\n\t// We have to fix `targetPosition` because model changed after nodes from `sourceRange` got removed and\n\t// that change might have an impact on `targetPosition`.\n\ttargetPosition = targetPosition._getTransformedByDeletion( sourceRange.start, sourceRange.end.offset - sourceRange.start.offset );\n\n\treturn this.insert( targetPosition, nodes );\n}\n\n/**\n * Sets given attribute on nodes in given range.\n *\n * @param {module:engine/model/range~Range} range Range containing nodes that should have the attribute set.\n * @param {String} key Key of attribute to set.\n * @param {*} value Attribute value.\n */\nexport function setAttribute( range, key, value ) {\n\t// Range might start or end in text nodes, so we have to split them.\n\t_splitNodeAtPosition( range.start );\n\t_splitNodeAtPosition( range.end );\n\n\t// Iterate over all items in the range.\n\tfor ( let item of range.getItems() ) {\n\t\t// Iterator will return `TextProxy` instances but we know that those text proxies will\n\t\t// always represent full text nodes (this is guaranteed thanks to splitting we did before).\n\t\t// So, we can operate on those text proxies' text nodes.\n\t\tlet node = item.is( 'textProxy' ) ? item.textNode : item;\n\n\t\tif ( value !== null ) {\n\t\t\tnode.setAttribute( key, value );\n\t\t} else {\n\t\t\tnode.removeAttribute( key );\n\t\t}\n\n\t\t// After attributes changing it may happen that some text nodes can be merged. Try to merge with previous node.\n\t\t_mergeNodesAtIndex( node.parent, node.index );\n\t}\n\n\t// Try to merge last changed node with it's previous sibling (not covered by the loop above).\n\t_mergeNodesAtIndex( range.end.parent, range.end.index );\n}\n\n/**\n * Removes given attribute from nodes in given range.\n *\n * @param {module:engine/model/range~Range} range Range containing nodes that should have the attribute removed.\n * @param {String} key Key of attribute to remove.\n */\nexport function removeAttribute( range, key ) {\n\t/* jshint validthis:true */\n\tthis.setAttribute( range, key, null );\n}\n\n/**\n * Normalizes given object or an array of objects to an array of {@link module:engine/model/node~Node nodes}. See\n * {@link module:engine/model/node~NodeSet NodeSet} for details on how normalization is performed.\n *\n * @param {module:engine/model/node~NodeSet} nodes Objects to normalize.\n * @returns {Array.<module:engine/model/node~Node>} Normalized nodes.\n */\nexport function normalizeNodes( nodes ) {\n\tconst normalized = [];\n\n\tif ( !( nodes instanceof Array ) ) {\n\t\tnodes = [ nodes ];\n\t}\n\n\t// Convert instances of classes other than Node.\n\tfor ( let i = 0; i < nodes.length; i++ ) {\n\t\tif ( typeof nodes[ i ] == 'string' ) {\n\t\t\tnormalized.push( new Text( nodes[ i ] ) );\n\t\t} else if ( nodes[ i ] instanceof TextProxy ) {\n\t\t\tnormalized.push( new Text( nodes[ i ].data, nodes[ i ].getAttributes() ) );\n\t\t} else if ( nodes[ i ] instanceof DocumentFragment || nodes[ i ] instanceof NodeList ) {\n\t\t\tfor ( let child of nodes[ i ] ) {\n\t\t\t\tnormalized.push( child );\n\t\t\t}\n\t\t} else if ( nodes[ i ] instanceof Node ) {\n\t\t\tnormalized.push( nodes[ i ] );\n\t\t}\n\t\t// Skip unrecognized type.\n\t}\n\n\t// Merge text nodes.\n\tfor ( let i = 1; i < normalized.length; i++ ) {\n\t\tconst node = normalized[ i ];\n\t\tconst prev = normalized[ i - 1 ];\n\n\t\tif ( node instanceof Text && prev instanceof Text && _haveSameAttributes( node, prev ) ) {\n\t\t\t// Doing this instead changing prev.data because .data is readonly.\n\t\t\tnormalized.splice( i - 1, 2, new Text( prev.data + node.data, prev.getAttributes() ) );\n\t\t\ti--;\n\t\t}\n\t}\n\n\treturn normalized;\n}\n\n/**\n * Checks if nodes before and after given index in given element are {@link module:engine/model/text~Text text nodes} and\n * merges them into one node if they have same attributes.\n *\n * Merging is done by removing two text nodes and inserting a new text node containing data from both merged text nodes.\n *\n * @ignore\n * @private\n * @param {module:engine/model/element~Element} element Parent element of nodes to merge.\n * @param {Number} index Index between nodes to merge.\n */\nfunction _mergeNodesAtIndex( element, index ) {\n\tconst nodeBefore = element.getChild( index - 1 );\n\tconst nodeAfter = element.getChild( index );\n\n\t// Check if both of those nodes are text objects with same attributes.\n\tif ( nodeBefore && nodeAfter && nodeBefore.is( 'text' ) && nodeAfter.is( 'text' ) && _haveSameAttributes( nodeBefore, nodeAfter ) ) {\n\t\t// Append text of text node after index to the before one.\n\t\tconst mergedNode = new Text( nodeBefore.data + nodeAfter.data, nodeBefore.getAttributes() );\n\n\t\t// Remove separate text nodes.\n\t\telement.removeChildren( index - 1, 2 );\n\n\t\t// Insert merged text node.\n\t\telement.insertChildren( index - 1, mergedNode );\n\t}\n}\n\n/**\n * Checks if given position is in a text node, and if so, splits the text node in two text nodes, each of them\n * containing a part of original text node.\n *\n * @ignore\n * @private\n * @param {module:engine/model/position~Position} position Position at which node should be split.\n */\nfunction _splitNodeAtPosition( position ) {\n\tconst textNode = position.textNode;\n\tconst element = position.parent;\n\n\tif ( textNode ) {\n\t\tconst offsetDiff = position.offset - textNode.startOffset;\n\t\tconst index = textNode.index;\n\n\t\telement.removeChildren( index, 1 );\n\n\t\tconst firstPart = new Text( textNode.data.substr( 0, offsetDiff ), textNode.getAttributes() );\n\t\tconst secondPart = new Text( textNode.data.substr( offsetDiff ), textNode.getAttributes() );\n\n\t\telement.insertChildren( index, [ firstPart, secondPart ] );\n\t}\n}\n\n/**\n * Checks whether two given nodes have same attributes.\n *\n * @ignore\n * @private\n * @param {module:engine/model/node~Node} nodeA Node to check.\n * @param {module:engine/model/node~Node} nodeB Node to check.\n * @returns {Boolean} `true` if nodes have same attributes, `false` otherwise.\n */\nfunction _haveSameAttributes( nodeA, nodeB ) {\n\tconst iteratorA = nodeA.getAttributes();\n\tconst iteratorB = nodeB.getAttributes();\n\n\tfor ( let attr of iteratorA ) {\n\t\tif ( attr[ 1 ] !== nodeB.getAttribute( attr[ 0 ] ) ) {\n\t\t\treturn false;\n\t\t}\n\n\t\titeratorB.next();\n\t}\n\n\treturn iteratorB.next().done;\n}\n\n/**\n * Value that can be normalized to an array of {@link module:engine/model/node~Node nodes}.\n *\n * Non-arrays are normalized as follows:\n * * {@link module:engine/model/node~Node Node} is left as is,\n * * {@link module:engine/model/textproxy~TextProxy TextProxy} and `String` are normalized to {@link module:engine/model/text~Text Text},\n * * {@link module:engine/model/nodelist~NodeList NodeList} is normalized to an array containing all nodes that are in that node list,\n * * {@link module:engine/model/documentfragment~DocumentFragment DocumentFragment} is normalized to an array containing all of it's\n * * children.\n *\n * Arrays are processed item by item like non-array values and flattened to one array. Normalization always results in\n * a flat array of {@link module:engine/model/node~Node nodes}. Consecutive text nodes (or items normalized to text nodes) will be\n * merged if they have same attributes.\n *\n * @typedef {module:engine/model/node~Node|module:engine/model/textproxy~TextProxy|String|\n * module:engine/model/nodelist~NodeList|module:engine/model/documentfragment~DocumentFragment|Iterable}\n * module:engine/model/node~NodeSet\n */\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/writer.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/text\n */\n\nimport Node from './node';\n\n/**\n * Tree view text node.\n *\n * @extends module:engine/view/node~Node\n */\nexport default class Text extends Node {\n\t/**\n\t * Creates a tree view text node.\n\t *\n\t * @param {String} data Text.\n\t */\n\tconstructor( data ) {\n\t\tsuper();\n\n\t\t/**\n\t\t * The text content.\n\t\t *\n\t\t * Setting the data fires the {@link module:engine/view/node~Node#event:change:text change event}.\n\t\t *\n\t\t * @private\n\t\t * @member {String} module:engine/view/text~Text#_data\n\t\t */\n\t\tthis._data = data;\n\t}\n\n\t/**\n\t * Clones this node.\n\t *\n\t * @returns {module:engine/view/text~Text} Text node that is a clone of this node.\n\t */\n\tclone() {\n\t\treturn new Text( this.data );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tis( type ) {\n\t\treturn type == 'text';\n\t}\n\n\t/**\n\t * The text content.\n\t *\n\t * Setting the data fires the {@link module:engine/view/node~Node#event:change:text change event}.\n\t */\n\tget data() {\n\t\treturn this._data;\n\t}\n\n\tset data( data ) {\n\t\tthis._fireChange( 'text', this );\n\n\t\tthis._data = data;\n\t}\n\n\t/**\n\t * Checks if this text node is similar to other text node.\n\t * Both nodes should have the same data to be considered as similar.\n\t *\n\t * @param {module:engine/view/text~Text} otherNode Node to check if it is same as this node.\n\t * @returns {Boolean}\n\t */\n\tisSimilar( otherNode ) {\n\t\tif ( !( otherNode instanceof Text ) ) {\n\t\t\treturn false;\n\t\t}\n\n\t\treturn this === otherNode || this.data === otherNode.data;\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/view/text.js","import checkGlobal from './_checkGlobal';\n\n/** Used to determine if values are of the language type `Object`. */\nvar objectTypes = {\n  'function': true,\n  'object': true\n};\n\n/** Detect free variable `exports`. */\nvar freeExports = (objectTypes[typeof exports] && exports && !exports.nodeType)\n  ? exports\n  : undefined;\n\n/** Detect free variable `module`. */\nvar freeModule = (objectTypes[typeof module] && module && !module.nodeType)\n  ? module\n  : undefined;\n\n/** Detect free variable `global` from Node.js. */\nvar freeGlobal = checkGlobal(freeExports && freeModule && typeof global == 'object' && global);\n\n/** Detect free variable `self`. */\nvar freeSelf = checkGlobal(objectTypes[typeof self] && self);\n\n/** Detect free variable `window`. */\nvar freeWindow = checkGlobal(objectTypes[typeof window] && window);\n\n/** Detect `this` as the global object. */\nvar thisGlobal = checkGlobal(objectTypes[typeof this] && this);\n\n/**\n * Used as a reference to the global object.\n *\n * The `this` value is used if it's the global object to avoid Greasemonkey's\n * restricted `window` object, otherwise the `window` object is used.\n */\nvar root = freeGlobal ||\n  ((freeWindow !== (thisGlobal && thisGlobal.window)) && freeWindow) ||\n    freeSelf || thisGlobal || Function('return this')();\n\nexport default root;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_root.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/observablemixin\n */\n\nimport EmitterMixin from './emittermixin';\nimport CKEditorError from './ckeditorerror';\nimport extend from './lib/lodash/extend';\nimport isObject from './lib/lodash/isObject';\n\nconst attributesSymbol = Symbol( 'attributes' );\nconst boundObservablesSymbol = Symbol( 'boundObservables' );\nconst boundAttributesSymbol = Symbol( 'boundAttributes' );\n\n/**\n * Mixin that injects the \"observable attributes\" and data binding functionality.\n * Used mainly in the {@link module:ui/model~Model} class.\n *\n * @mixin ObservableMixin\n * @mixes module:utils/emittermixin~EmitterMixin\n * @implements module:utils/observablemixin~Observable\n */\nconst ObservableMixin = {\n\t/**\n\t * Creates and sets the value of an observable attribute of this object. Such an attribute becomes a part\n\t * of the state and is be observable.\n\t *\n\t * It accepts also a single object literal containing key/value pairs with attributes to be set.\n\t *\n\t * This method throws the observable-set-cannot-override error if the observable instance already\n\t * have a property with a given attribute name. This prevents from mistakenly overriding existing\n\t * properties and methods, but means that `foo.set( 'bar', 1 )` may be slightly slower than `foo.bar = 1`.\n\t *\n\t * @method #set\n\t * @param {String} name The attributes name.\n\t * @param {*} value The attributes value.\n\t */\n\tset( name, value ) {\n\t\t// If the first parameter is an Object, iterate over its properties.\n\t\tif ( isObject( name ) ) {\n\t\t\tObject.keys( name ).forEach( ( attr ) => {\n\t\t\t\tthis.set( attr, name[ attr ] );\n\t\t\t}, this );\n\n\t\t\treturn;\n\t\t}\n\n\t\tinitObservable( this );\n\n\t\tconst attributes = this[ attributesSymbol ];\n\n\t\tif ( ( name in this ) && !attributes.has( name ) ) {\n\t\t\t/**\n\t\t\t * Cannot override an existing property.\n\t\t\t *\n\t\t\t * This error is thrown when trying to {@link ~Observable#set set} an attribute with\n\t\t\t * a name of an already existing property. For example:\n\t\t\t *\n\t\t\t *\t\tlet observable = new Model();\n\t\t\t *\t\tobservable.property = 1;\n\t\t\t *\t\tobservable.set( 'property', 2 );\t\t// throws\n\t\t\t *\n\t\t\t *\t\tobservable.set( 'attr', 1 );\n\t\t\t *\t\tobservable.set( 'attr', 2 );\t\t\t// ok, because this is an existing attribute.\n\t\t\t *\n\t\t\t * @error observable-set-cannot-override\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'observable-set-cannot-override: Cannot override an existing property.' );\n\t\t}\n\n\t\tObject.defineProperty( this, name, {\n\t\t\tenumerable: true,\n\t\t\tconfigurable: true,\n\n\t\t\tget() {\n\t\t\t\treturn attributes.get( name );\n\t\t\t},\n\n\t\t\tset( value ) {\n\t\t\t\tconst oldValue = attributes.get( name );\n\n\t\t\t\t// Allow undefined as an initial value like A.define( 'x', undefined ) (#132).\n\t\t\t\t// Note: When attributes map has no such own property, then its value is undefined.\n\t\t\t\tif ( oldValue !== value || !attributes.has( name ) ) {\n\t\t\t\t\tattributes.set( name, value );\n\t\t\t\t\tthis.fire( 'change:' + name, name, value, oldValue );\n\t\t\t\t}\n\t\t\t}\n\t\t} );\n\n\t\tthis[ name ] = value;\n\t},\n\n\t/**\n\t * Binds observable attributes to another objects implementing {@link ~ObservableMixin}\n\t * interface (like {@link module:ui/model~Model}).\n\t *\n\t * Once bound, the observable will immediately share the current state of attributes\n\t * of the observable it is bound to and react to the changes to these attributes\n\t * in the future.\n\t *\n\t * **Note**: To release the binding use {@link module:utils/observablemixin~ObservableMixin#unbind}.\n\t *\n\t *\t\tA.bind( 'a' ).to( B );\n\t *\t\tA.bind( 'a' ).to( B, 'b' );\n\t *\t\tA.bind( 'a', 'b' ).to( B, 'c', 'd' );\n\t *\t\tA.bind( 'a' ).to( B, 'b', C, 'd', ( b, d ) => b + d );\n\t *\n\t * @method #bind\n\t * @param {...String} bindAttrs Observable attributes that will be bound to another observable(s).\n\t * @returns {module:utils/observablemixin~BindChain}\n\t */\n\tbind( ...bindAttrs ) {\n\t\tif ( !bindAttrs.length || !isStringArray( bindAttrs ) ) {\n\t\t\t/**\n\t\t\t * All attributes must be strings.\n\t\t\t *\n\t\t\t * @error observable-bind-wrong-attrs\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'observable-bind-wrong-attrs: All attributes must be strings.' );\n\t\t}\n\n\t\tif ( ( new Set( bindAttrs ) ).size !== bindAttrs.length ) {\n\t\t\t/**\n\t\t\t * Attributes must be unique.\n\t\t\t *\n\t\t\t * @error observable-bind-duplicate-attrs\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'observable-bind-duplicate-attrs: Attributes must be unique.' );\n\t\t}\n\n\t\tinitObservable( this );\n\n\t\tconst boundAttributes = this[ boundAttributesSymbol ];\n\n\t\tbindAttrs.forEach( attrName => {\n\t\t\tif ( boundAttributes.has( attrName ) ) {\n\t\t\t\t/**\n\t\t\t\t * Cannot bind the same attribute more that once.\n\t\t\t\t *\n\t\t\t\t * @error observable-bind-rebind\n\t\t\t\t */\n\t\t\t\tthrow new CKEditorError( 'observable-bind-rebind: Cannot bind the same attribute more that once.' );\n\t\t\t}\n\t\t} );\n\n\t\tconst bindings = new Map();\n\n\t\t/**\n\t\t * @typedef Binding\n\t\t * @type Object\n\t\t * @property {Array} attr Attribute which is bound.\n\t\t * @property {Array} to Array of observable–attribute components of the binding (`{ observable: ..., attr: .. }`).\n\t\t * @property {Array} callback A function which processes `to` components.\n\t\t */\n\t\tbindAttrs.forEach( a => {\n\t\t\tconst binding = { attr: a, to: [] };\n\n\t\t\tboundAttributes.set( a, binding );\n\t\t\tbindings.set( a, binding );\n\t\t} );\n\n\t\t/**\n\t\t * @typedef BindChain\n\t\t * @type Object\n\t\t * @property {Function} to See {@link ~ObservableMixin#_bindTo}.\n\t\t * @property {module:utils/observablemixin~Observable} _observable The observable which initializes the binding.\n\t\t * @property {Array} _bindAttrs Array of `_observable` attributes to be bound.\n\t\t * @property {Array} _to Array of `to()` observable–attributes (`{ observable: toObservable, attrs: ...toAttrs }`).\n\t\t * @property {Map} _bindings Stores bindings to be kept in\n\t\t *  {@link ~ObservableMixin#_boundAttributes}/{@link ~ObservableMixin#_boundObservables}\n\t\t * initiated in this binding chain.\n\t\t */\n\t\treturn {\n\t\t\tto: bindTo,\n\n\t\t\t_observable: this,\n\t\t\t_bindAttrs: bindAttrs,\n\t\t\t_to: [],\n\t\t\t_bindings: bindings\n\t\t};\n\t},\n\n\t/**\n\t * Removes the binding created with {@link ~ObservableMixin#bind}.\n\t *\n\t *\t\tA.unbind( 'a' );\n\t *\t\tA.unbind();\n\t *\n\t * @method #unbind\n\t * @param {...String} [unbindAttrs] Observable attributes to be unbound. All the bindings will\n\t * be released if no attributes provided.\n\t */\n\tunbind( ...unbindAttrs ) {\n\t\t// Nothing to do here if not inited yet.\n\t\tif ( !( attributesSymbol in this ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst boundAttributes = this[ boundAttributesSymbol ];\n\t\tconst boundObservables = this[ boundObservablesSymbol ];\n\n\t\tif ( unbindAttrs.length ) {\n\t\t\tif ( !isStringArray( unbindAttrs ) ) {\n\t\t\t\t/**\n\t\t\t\t * Attributes must be strings.\n\t\t\t\t *\n\t\t\t\t * @error observable-unbind-wrong-attrs\n\t\t\t\t */\n\t\t\t\tthrow new CKEditorError( 'observable-unbind-wrong-attrs: Attributes must be strings.' );\n\t\t\t}\n\n\t\t\tunbindAttrs.forEach( attrName => {\n\t\t\t\tconst binding = boundAttributes.get( attrName );\n\t\t\t\tlet toObservable, toAttr, toAttrs, toAttrBindings;\n\n\t\t\t\tbinding.to.forEach( to => {\n\t\t\t\t\t// TODO: ES6 destructuring.\n\t\t\t\t\ttoObservable = to[ 0 ];\n\t\t\t\t\ttoAttr = to[ 1 ];\n\t\t\t\t\ttoAttrs = boundObservables.get( toObservable );\n\t\t\t\t\ttoAttrBindings = toAttrs[ toAttr ];\n\n\t\t\t\t\ttoAttrBindings.delete( binding );\n\n\t\t\t\t\tif ( !toAttrBindings.size ) {\n\t\t\t\t\t\tdelete toAttrs[ toAttr ];\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( !Object.keys( toAttrs ).length ) {\n\t\t\t\t\t\tboundObservables.delete( toObservable );\n\t\t\t\t\t\tthis.stopListening( toObservable, 'change' );\n\t\t\t\t\t}\n\t\t\t\t} );\n\n\t\t\t\tboundAttributes.delete( attrName );\n\t\t\t} );\n\t\t} else {\n\t\t\tboundObservables.forEach( ( bindings, boundObservable ) => {\n\t\t\t\tthis.stopListening( boundObservable, 'change' );\n\t\t\t} );\n\n\t\t\tboundObservables.clear();\n\t\t\tboundAttributes.clear();\n\t\t}\n\t}\n\n\t/**\n\t * @private\n\t * @member ~ObservableMixin#_boundAttributes\n\t */\n\n\t/**\n\t * @private\n\t * @member ~ObservableMixin#_boundObservables\n\t */\n\n\t/**\n\t * @private\n\t * @member ~ObservableMixin#_bindTo\n\t */\n};\n\nexport default ObservableMixin;\n\n// Init symbol properties needed to for the observable mechanism to work.\n//\n// @private\n// @param {module:utils/observablemixin~ObservableMixin} observable\nfunction initObservable( observable ) {\n\t// Do nothing if already inited.\n\tif ( attributesSymbol in observable ) {\n\t\treturn;\n\t}\n\n\t// The internal hash containing the observable's state.\n\t//\n\t// @private\n\t// @type {Map}\n\tObject.defineProperty( observable, attributesSymbol, {\n\t\tvalue: new Map()\n\t} );\n\n\t// Map containing bindings to external observables. It shares the binding objects\n\t// (`{ observable: A, attr: 'a', to: ... }`) with {@link module:utils/observablemixin~ObservableMixin#_boundAttributes} and\n\t// it is used to observe external observables to update own attributes accordingly.\n\t// See {@link module:utils/observablemixin~ObservableMixin#bind}.\n\t//\n\t//\t\tA.bind( 'a', 'b', 'c' ).to( B, 'x', 'y', 'x' );\n\t//\t\tconsole.log( A._boundObservables );\n\t//\n\t//\t\t\tMap( {\n\t//\t\t\t\tB: {\n\t//\t\t\t\t\tx: Set( [\n\t//\t\t\t\t\t\t{ observable: A, attr: 'a', to: [ [ B, 'x' ] ] },\n\t//\t\t\t\t\t\t{ observable: A, attr: 'c', to: [ [ B, 'x' ] ] }\n\t//\t\t\t\t\t] ),\n\t//\t\t\t\t\ty: Set( [\n\t//\t\t\t\t\t\t{ observable: A, attr: 'b', to: [ [ B, 'y' ] ] },\n\t//\t\t\t\t\t] )\n\t//\t\t\t\t}\n\t//\t\t\t} )\n\t//\n\t//\t\tA.bind( 'd' ).to( B, 'z' ).to( C, 'w' ).as( callback );\n\t//\t\tconsole.log( A._boundObservables );\n\t//\n\t//\t\t\tMap( {\n\t//\t\t\t\tB: {\n\t//\t\t\t\t\tx: Set( [\n\t//\t\t\t\t\t\t{ observable: A, attr: 'a', to: [ [ B, 'x' ] ] },\n\t//\t\t\t\t\t\t{ observable: A, attr: 'c', to: [ [ B, 'x' ] ] }\n\t//\t\t\t\t\t] ),\n\t//\t\t\t\t\ty: Set( [\n\t//\t\t\t\t\t\t{ observable: A, attr: 'b', to: [ [ B, 'y' ] ] },\n\t//\t\t\t\t\t] ),\n\t//\t\t\t\t\tz: Set( [\n\t//\t\t\t\t\t\t{ observable: A, attr: 'd', to: [ [ B, 'z' ], [ C, 'w' ] ], callback: callback }\n\t//\t\t\t\t\t] )\n\t//\t\t\t\t},\n\t//\t\t\t\tC: {\n\t//\t\t\t\t\tw: Set( [\n\t//\t\t\t\t\t\t{ observable: A, attr: 'd', to: [ [ B, 'z' ], [ C, 'w' ] ], callback: callback }\n\t//\t\t\t\t\t] )\n\t//\t\t\t\t}\n\t//\t\t\t} )\n\t//\n\t// @private\n\t// @type {Map}\n\tObject.defineProperty( observable, boundObservablesSymbol, {\n\t\tvalue: new Map()\n\t} );\n\n\t// Object that stores which attributes of this observable are bound and how. It shares\n\t// the binding objects (`{ observable: A, attr: 'a', to: ... }`) with {@link utils.ObservableMixin#_boundObservables}.\n\t// This data structure is a reverse of {@link utils.ObservableMixin#_boundObservables} and it is helpful for\n\t// {@link utils.ObservableMixin#unbind}.\n\t//\n\t// See {@link utils.ObservableMixin#bind}.\n\t//\n\t//\t\tA.bind( 'a', 'b', 'c' ).to( B, 'x', 'y', 'x' );\n\t//\t\tconsole.log( A._boundAttributes );\n\t//\n\t//\t\t\tMap( {\n\t//\t\t\t\ta: { observable: A, attr: 'a', to: [ [ B, 'x' ] ] },\n\t//\t\t\t\tb: { observable: A, attr: 'b', to: [ [ B, 'y' ] ] },\n\t//\t\t\t\tc: { observable: A, attr: 'c', to: [ [ B, 'x' ] ] }\n\t//\t\t\t} )\n\t//\n\t//\t\tA.bind( 'd' ).to( B, 'z' ).to( C, 'w' ).as( callback );\n\t//\t\tconsole.log( A._boundAttributes );\n\t//\n\t//\t\t\tMap( {\n\t//\t\t\t\ta: { observable: A, attr: 'a', to: [ [ B, 'x' ] ] },\n\t//\t\t\t\tb: { observable: A, attr: 'b', to: [ [ B, 'y' ] ] },\n\t//\t\t\t\tc: { observable: A, attr: 'c', to: [ [ B, 'x' ] ] },\n\t//\t\t\t\td: { observable: A, attr: 'd', to: [ [ B, 'z' ], [ C, 'w' ] ], callback: callback }\n\t//\t\t\t} )\n\t//\n\t// @private\n\t// @type {Map}\n\tObject.defineProperty( observable, boundAttributesSymbol, {\n\t\tvalue: new Map()\n\t} );\n}\n\n// A chaining for {@link module:utils/observablemixin~ObservableMixin#bind} providing `.to()` interface.\n//\n// @private\n// @param {...[Observable|String|Function]} args Arguments of the `.to( args )` binding.\nfunction bindTo( ...args ) {\n\t/* jshint validthis: true */\n\tconst parsedArgs = parseBindToArgs( ...args );\n\tconst bindingsKeys = Array.from( this._bindings.keys() );\n\tconst numberOfBindings = bindingsKeys.length;\n\n\t// Eliminate A.bind( 'x' ).to( B, C )\n\tif ( !parsedArgs.callback && parsedArgs.to.length > 1 ) {\n\t\t/**\n\t\t * Binding multiple observables only possible with callback.\n\t\t *\n\t\t * @error observable-bind-no-callback\n\t\t */\n\t\tthrow new CKEditorError( 'observable-bind-to-no-callback: Binding multiple observables only possible with callback.' ) ;\n\t}\n\n\t// Eliminate A.bind( 'x', 'y' ).to( B, callback )\n\tif ( numberOfBindings > 1 && parsedArgs.callback ) {\n\t\t/**\n\t\t * Cannot bind multiple attributes and use a callback in one binding.\n\t\t *\n\t\t * @error observable-bind-to-extra-callback\n\t\t */\n\t\tthrow new CKEditorError( 'observable-bind-to-extra-callback: Cannot bind multiple attributes and use a callback in one binding.' ) ;\n\t}\n\n\tparsedArgs.to.forEach( to => {\n\t\t// Eliminate A.bind( 'x', 'y' ).to( B, 'a' )\n\t\tif ( to.attrs.length && to.attrs.length !== numberOfBindings ) {\n\t\t\t/**\n\t\t\t * The number of attributes must match.\n\t\t\t *\n\t\t\t * @error observable-bind-to-attrs-length\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'observable-bind-to-attrs-length: The number of attributes must match.' );\n\t\t}\n\n\t\t// When no to.attrs specified, observing source attributes instead i.e.\n\t\t// A.bind( 'x', 'y' ).to( B ) -> Observe B.x and B.y\n\t\tif ( !to.attrs.length ) {\n\t\t\tto.attrs = this._bindAttrs;\n\t\t}\n\t} );\n\n\tthis._to = parsedArgs.to;\n\n\t// Fill {@link BindChain#_bindings} with callback. When the callback is set there's only one binding.\n\tif ( parsedArgs.callback ) {\n\t\tthis._bindings.get( bindingsKeys[ 0 ] ).callback = parsedArgs.callback;\n\t}\n\n\tattachBindToListeners( this._observable, this._to );\n\n\t// Update observable._boundAttributes and observable._boundObservables.\n\tupdateBindToBound( this );\n\n\t// Set initial values of bound attributes.\n\tthis._bindAttrs.forEach( attrName => {\n\t\tupdateBoundObservableAttr( this._observable, attrName );\n\t} );\n}\n\n// Check if all entries of the array are of `String` type.\n//\n// @private\n// @param {Array} arr An array to be checked.\n// @returns {Boolean}\nfunction isStringArray( arr ) {\n\treturn arr.every( a => typeof a == 'string' );\n}\n\n// Parses and validates {@link Observable#bind}`.to( args )` arguments and returns\n// an object with a parsed structure. For example\n//\n//\t\tA.bind( 'x' ).to( B, 'a', C, 'b', call );\n//\n// becomes\n//\n//\t\t{\n//\t\t\tto: [\n//\t\t\t\t{ observable: B, attrs: [ 'a' ] },\n//\t\t\t\t{ observable: C, attrs: [ 'b' ] },\n//\t\t\t],\n//\t\t\tcallback: call\n// \t\t}\n//\n// @private\n// @param {...*} args Arguments of {@link Observable#bind}`.to( args )`.\n// @returns {Object}\nfunction parseBindToArgs( ...args ) {\n\t// Eliminate A.bind( 'x' ).to()\n\tif ( !args.length ) {\n\t\t/**\n\t\t * Invalid argument syntax in `to()`.\n\t\t *\n\t\t * @error observable-bind-to-parse-error\n\t\t */\n\t\tthrow new CKEditorError( 'observable-bind-to-parse-error: Invalid argument syntax in `to()`.' );\n\t}\n\n\tconst parsed = { to: [] };\n\tlet lastObservable;\n\n\tif ( typeof args[ args.length - 1 ] == 'function' ) {\n\t\tparsed.callback = args.pop();\n\t}\n\n\targs.forEach( a => {\n\t\tif ( typeof a == 'string' ) {\n\t\t\tlastObservable.attrs.push( a );\n\t\t} else if ( typeof a == 'object' ) {\n\t\t\tlastObservable = { observable: a, attrs: [] };\n\t\t\tparsed.to.push( lastObservable );\n\t\t} else {\n\t\t\tthrow new CKEditorError( 'observable-bind-to-parse-error: Invalid argument syntax in `to()`.' );\n\t\t}\n\t} );\n\n\treturn parsed;\n}\n\n// Synchronizes {@link module:utils/observablemixin#_boundObservables} with {@link Binding}.\n//\n// @private\n// @param {Binding} binding A binding to store in {@link Observable#_boundObservables}.\n// @param {Observable} toObservable A observable, which is a new component of `binding`.\n// @param {String} toAttrName A name of `toObservable`'s attribute, a new component of the `binding`.\nfunction updateBoundObservables( observable, binding, toObservable, toAttrName ) {\n\tconst boundObservables = observable[ boundObservablesSymbol ];\n\tconst bindingsToObservable = boundObservables.get( toObservable );\n\tconst bindings = bindingsToObservable || {};\n\n\tif ( !bindings[ toAttrName ] ) {\n\t\tbindings[ toAttrName ] = new Set();\n\t}\n\n\t// Pass the binding to a corresponding Set in `observable._boundObservables`.\n\tbindings[ toAttrName ].add( binding );\n\n\tif ( !bindingsToObservable ) {\n\t\tboundObservables.set( toObservable, bindings );\n\t}\n}\n\n// Synchronizes {@link Observable#_boundAttributes} and {@link Observable#_boundObservables}\n// with {@link BindChain}.\n//\n// Assuming the following binding being created\n//\n// \t\tA.bind( 'a', 'b' ).to( B, 'x', 'y' );\n//\n// the following bindings were initialized by {@link Observable#bind} in {@link BindChain#_bindings}:\n//\n// \t\t{\n// \t\t\ta: { observable: A, attr: 'a', to: [] },\n// \t\t\tb: { observable: A, attr: 'b', to: [] },\n// \t\t}\n//\n// Iterate over all bindings in this chain and fill their `to` properties with\n// corresponding to( ... ) arguments (components of the binding), so\n//\n// \t\t{\n// \t\t\ta: { observable: A, attr: 'a', to: [ B, 'x' ] },\n// \t\t\tb: { observable: A, attr: 'b', to: [ B, 'y' ] },\n// \t\t}\n//\n// Then update the structure of {@link Observable#_boundObservables} with updated\n// binding, so it becomes:\n//\n// \t\tMap( {\n// \t\t\tB: {\n// \t\t\t\tx: Set( [\n// \t\t\t\t\t{ observable: A, attr: 'a', to: [ [ B, 'x' ] ] }\n// \t\t\t\t] ),\n// \t\t\t\ty: Set( [\n// \t\t\t\t\t{ observable: A, attr: 'b', to: [ [ B, 'y' ] ] },\n// \t\t\t\t] )\n//\t\t\t}\n// \t\t} )\n//\n// @private\n// @param {BindChain} chain The binding initialized by {@link Observable#bind}.\nfunction updateBindToBound( chain ) {\n\tlet toAttr;\n\n\tchain._bindings.forEach( ( binding, attrName ) => {\n\t\t// Note: For a binding without a callback, this will run only once\n\t\t// like in A.bind( 'x', 'y' ).to( B, 'a', 'b' )\n\t\t// TODO: ES6 destructuring.\n\t\tchain._to.forEach( to => {\n\t\t\ttoAttr = to.attrs[ binding.callback ? 0 : chain._bindAttrs.indexOf( attrName ) ];\n\n\t\t\tbinding.to.push( [ to.observable, toAttr ] );\n\t\t\tupdateBoundObservables( chain._observable, binding, to.observable, toAttr );\n\t\t} );\n\t} );\n}\n\n// Updates an attribute of a {@link Observable} with a value\n// determined by an entry in {@link Observable#_boundAttributes}.\n//\n// @private\n// @param {Observable} observable A observable which attribute is to be updated.\n// @param {String} attrName An attribute to be updated.\nfunction updateBoundObservableAttr( observable, attrName ) {\n\tconst boundAttributes = observable[ boundAttributesSymbol ];\n\tconst binding = boundAttributes.get( attrName );\n\tlet attrValue;\n\n\t// When a binding with callback is created like\n\t//\n\t// \t\tA.bind( 'a' ).to( B, 'b', C, 'c', callback );\n\t//\n\t// collect B.b and C.c, then pass them to callback to set A.a.\n\tif ( binding.callback ) {\n\t\tattrValue = binding.callback.apply( observable, binding.to.map( to => to[ 0 ][ to[ 1 ] ] ) );\n\t} else {\n\t\tattrValue = binding.to[ 0 ];\n\t\tattrValue = attrValue[ 0 ][ attrValue[ 1 ] ];\n\t}\n\n\tif ( observable.hasOwnProperty( attrName ) ) {\n\t\tobservable[ attrName ] = attrValue;\n\t} else {\n\t\tobservable.set( attrName, attrValue );\n\t}\n}\n\n// Starts listening to changes in {@link BindChain._to} observables to update\n// {@link BindChain._observable} {@link BindChain._bindAttrs}. Also sets the\n// initial state of {@link BindChain._observable}.\n//\n// @private\n// @param {BindChain} chain The chain initialized by {@link Observable#bind}.\nfunction attachBindToListeners( observable, toBindings ) {\n\ttoBindings.forEach( to => {\n\t\tconst boundObservables = observable[ boundObservablesSymbol ];\n\t\tlet bindings;\n\n\t\t// If there's already a chain between the observables (`observable` listens to\n\t\t// `to.observable`), there's no need to create another `change` event listener.\n\t\tif ( !boundObservables.get( to.observable ) ) {\n\t\t\tobservable.listenTo( to.observable, 'change', ( evt, attrName ) => {\n\t\t\t\tbindings = boundObservables.get( to.observable )[ attrName ];\n\n\t\t\t\t// Note: to.observable will fire for any attribute change, react\n\t\t\t\t// to changes of attributes which are bound only.\n\t\t\t\tif ( bindings ) {\n\t\t\t\t\tbindings.forEach( binding => {\n\t\t\t\t\t\tupdateBoundObservableAttr( observable, binding.attr );\n\t\t\t\t\t} );\n\t\t\t\t}\n\t\t\t} );\n\t\t}\n\t} );\n}\n\nextend( ObservableMixin, EmitterMixin );\n\n/**\n * Fired when an attribute changed value.\n *\n * @event module:utils/observablemixin~ObservableMixin#change:{attribute}\n * @param {String} name The attribute name.\n * @param {*} value The new attribute value.\n * @param {*} oldValue The previous attribute value.\n */\n\n/**\n * Interface representing classes which mix in {@link module:utils/observablemixin~ObservableMixin}.\n *\n * @interface Observable\n */\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/observablemixin.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/operation/operation\n */\n\nimport clone from '@ckeditor/ckeditor5-utils/src/lib/lodash/clone';\n\n/**\n * Abstract base operation class.\n *\n * @abstract\n */\nexport default class Operation {\n\t/**\n\t * Base operation constructor.\n\t * @param {Number} baseVersion {@link module:engine/model/document~Document#version} on which the operation can be applied.\n\t */\n\tconstructor( baseVersion ) {\n\t\t/**\n\t\t * {@link module:engine/model/document~Document#version} on which operation can be applied. If you try to\n\t\t * {@link module:engine/model/document~Document#applyOperation apply} operation with different base version than the\n\t\t * {@link module:engine/model/document~Document#version document version} the\n\t\t * {@link module:utils/ckeditorerror~CKEditorError model-document-applyOperation-wrong-version} error is thrown.\n\t\t *\n\t\t * @member {Number}\n\t\t */\n\t\tthis.baseVersion = baseVersion;\n\n\t\t/**\n\t\t * Operation type.\n\t\t *\n\t\t * @readonly\n\t\t * @member {String} #type\n\t\t */\n\n\t\t/**\n\t\t * {@link module:engine/model/delta/delta~Delta Delta} which the operation is a part of. This property is set by the\n\t\t * {@link module:engine/model/delta/delta~Delta delta} when the operations is added to it by the\n\t\t * {@link module:engine/model/delta/delta~Delta#addOperation} method.\n\t\t *\n\t\t * @member {module:engine/model/delta/delta~Delta} #delta\n\t\t */\n\n\t\t/**\n\t\t * Creates and returns an operation that has the same parameters as this operation.\n\t\t *\n\t\t * @method #clone\n\t\t * @returns {module:engine/model/operation/operation~Operation} Clone of this operation.\n\t\t */\n\n\t\t/**\n\t\t * Creates and returns a reverse operation. Reverse operation when executed right after\n\t\t * the original operation will bring back tree model state to the point before the original\n\t\t * operation execution. In other words, it reverses changes done by the original operation.\n\t\t *\n\t\t * Keep in mind that tree model state may change since executing the original operation,\n\t\t * so reverse operation will be \"outdated\". In that case you will need to\n\t\t * {@link module:engine/model/operation/transform~transform} it by all operations that were executed after the original operation.\n\t\t *\n\t\t * @method #getReversed\n\t\t * @returns {module:engine/model/operation/operation~Operation} Reversed operation.\n\t\t */\n\n\t\t/**\n\t\t * Executes the operation - modifications described by the operation attributes\n\t\t * will be applied to the tree model.\n\t\t *\n\t\t * @protected\n\t\t * @method #_execute\n\t\t * @returns {Object} Object with additional information about the applied changes. It properties depends on the\n\t\t * operation type.\n\t\t */\n\t}\n\n\t/**\n\t * Custom toJSON method to solve child-parent circular dependencies.\n\t *\n\t * @method #toJSON\n\t * @returns {Object} Clone of this object with the delta property replaced with string.\n\t */\n\ttoJSON() {\n\t\tconst json = clone( this, true );\n\n\t\tjson.__className = this.constructor.className;\n\n\t\t// Remove parent delta to avoid circular dependencies.\n\t\tdelete json.delta;\n\n\t\treturn json;\n\t}\n\n\t/**\n\t * Name of the operation class used for serialization.\n\t *\n\t * @type {String}\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.operation.Operation';\n\t}\n\n\t/**\n\t * Creates Operation object from deserilized object, i.e. from parsed JSON string.\n\t *\n\t * @param {Object} json Deserialized JSON object.\n\t * @param {module:engine/model/document~Document} doc Document on which this operation will be applied.\n\t * @returns {module:engine/model/operation/operation~Operation}\n\t */\n\tstatic fromJSON( json ) {\n\t\treturn new this( json.baseVersion );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/operation/operation.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/range\n */\n\nimport Position from './position';\nimport TreeWalker from './treewalker';\n\n/**\n * Tree view range.\n */\nexport default class Range {\n\t/**\n\t * Creates a range spanning from `start` position to `end` position.\n\t *\n\t * **Note:** Constructor creates it's own {@link module:engine/view/position~Position} instances basing on passed values.\n\t *\n\t * @param {module:engine/view/position~Position} start Start position.\n\t * @param {module:engine/view/position~Position} [end] End position. If not set, range will be collapsed at `start` position.\n\t */\n\tconstructor( start, end = null ) {\n\t\t/**\n\t\t * Start position.\n\t\t *\n\t\t * @member {module:engine/view/position~Position}\n\t\t */\n\t\tthis.start = Position.createFromPosition( start );\n\n\t\t/**\n\t\t * End position.\n\t\t *\n\t\t * @member {module:engine/view/position~Position}\n\t\t */\n\t\tthis.end = end ? Position.createFromPosition( end ) : Position.createFromPosition( start );\n\t}\n\n\t/**\n\t * Returns an iterator that iterates over all {@link module:engine/view/item~Item view items} that are in this range and returns\n\t * them together with additional information like length or {@link module:engine/view/position~Position positions},\n\t * grouped as {@link module:engine/view/treewalker~TreeWalkerValue}.\n\t *\n\t * This iterator uses {@link module:engine/view/treewalker~TreeWalker TreeWalker} with `boundaries` set to this range and\n\t * `ignoreElementEnd` option\n\t * set to `true`.\n\t *\n\t * @returns {Iterable.<module:engine/view/treewalker~TreeWalkerValue>}\n\t */\n\t*[ Symbol.iterator ]() {\n\t\tyield* new TreeWalker( { boundaries: this, ignoreElementEnd: true } );\n\t}\n\n\t/**\n\t * Returns whether the range is collapsed, that is it start and end positions are equal.\n\t *\n\t * @type {Boolean}\n\t */\n\tget isCollapsed() {\n\t\treturn this.start.isEqual( this.end );\n\t}\n\n\t/**\n\t * Returns whether this range is flat, that is if {@link module:engine/view/range~Range#start start} position and\n\t * {@link module:engine/view/range~Range#end end} position are in the same {@link module:engine/view/position~Position#parent parent}.\n\t *\n\t * @type {Boolean}\n\t */\n\tget isFlat() {\n\t\treturn this.start.parent === this.end.parent;\n\t}\n\n\t/**\n\t * Range root element.\n\t *\n\t * @type {module:engine/view/element~Element|module:engine/view/documentfragment~DocumentFragment}\n\t */\n\tget root() {\n\t\treturn this.start.root;\n\t}\n\n\t/**\n\t * Creates a maximal range that has the same content as this range but is expanded in both ways (at the beginning\n\t * and at the end).\n\t *\n\t * For example:\n\t *\n\t * \t\t<p>Foo</p><p><b>{Bar}</b></p> -> <p>Foo</p>[<p><b>Bar</b>]</p>\n\t * \t\t<p><b>foo</b>{bar}<span></span></p> -> <p><b>foo[</b>bar<span></span>]</p>\n\t *\n\t * Note that in the sample above:\n\t *  - `<p>` have type of {@link module:engine/view/containerelement~ContainerElement},\n\t *  - `<b>` have type of {@link module:engine/view/attributeelement~AttributeElement},\n\t *  - `<span>` have type of {@link module:engine/view/uielement~UIElement}.\n\t *\n\t * @returns {module:engine/view/range~Range} Enlarged range.\n\t */\n\tgetEnlarged() {\n\t\tlet start = this.start.getLastMatchingPosition( enlargeShrinkSkip, { direction: 'backward' } );\n\t\tlet end = this.end.getLastMatchingPosition( enlargeShrinkSkip );\n\n\t\t// Fix positions, in case if they are in Text node.\n\t\tif ( start.parent.is( 'text' ) && start.isAtStart ) {\n\t\t\tstart = Position.createBefore( start.parent );\n\t\t}\n\n\t\tif ( end.parent.is( 'text' ) && end.isAtEnd ) {\n\t\t\tend = Position.createAfter( end.parent );\n\t\t}\n\n\t\treturn new Range( start, end );\n\t}\n\n\t/**\n\t * Creates a minimum range that has the same content as this range but is trimmed in both ways (at the beginning\n\t * and at the end).\n\t *\n\t * For example:\n\t *\n\t * \t\t<p>Foo</p>[<p><b>Bar</b>]</p> -> <p>Foo</p><p><b>{Bar}</b></p>\n\t * \t\t<p><b>foo[</b>bar<span></span>]</p> -> <p><b>foo</b>{bar}<span></span></p>\n\t *\n\t * Note that in the sample above:\n\t *  - `<p>` have type of {@link module:engine/view/containerelement~ContainerElement},\n\t *  - `<b>` have type of {@link module:engine/view/attributeelement~AttributeElement},\n\t *  - `<span>` have type of {@link module:engine/view/uielement~UIElement}.\n\t *\n\t * @returns {module:engine/view/range~Range} Shrink range.\n\t */\n\tgetTrimmed() {\n\t\tlet start = this.start.getLastMatchingPosition( enlargeShrinkSkip );\n\t\tlet end = this.end.getLastMatchingPosition( enlargeShrinkSkip, { direction: 'backward' } );\n\t\tlet nodeAfterStart = start.nodeAfter;\n\t\tlet nodeBeforeEnd = end.nodeBefore;\n\n\t\t// Because TreeWalker prefers positions next to text node, we need to move them manually into these text nodes.\n\t\tif ( nodeAfterStart && nodeAfterStart.is( 'text' ) ) {\n\t\t\tstart = new Position( nodeAfterStart, 0 );\n\t\t}\n\n\t\tif ( nodeBeforeEnd && nodeBeforeEnd.is( 'text' ) ) {\n\t\t\tend = new Position( nodeBeforeEnd, nodeBeforeEnd.data.length );\n\t\t}\n\n\t\treturn new Range( start, end );\n\t}\n\n\t/**\n\t * Two ranges are equal if their start and end positions are equal.\n\t *\n\t * @param {module:engine/view/range~Range} otherRange Range to compare with.\n\t * @returns {Boolean} `true` if ranges are equal, `false` otherwise\n\t */\n\tisEqual( otherRange ) {\n\t\treturn this == otherRange || ( this.start.isEqual( otherRange.start ) && this.end.isEqual( otherRange.end ) );\n\t}\n\n\t/**\n\t * Checks whether this range contains given {@link module:engine/view/position~Position position}.\n\t *\n\t * @param {module:engine/view/position~Position} position Position to check.\n\t * @returns {Boolean} `true` if given {@link module:engine/view/position~Position position} is contained in this range, `false` otherwise.\n\t */\n\tcontainsPosition( position ) {\n\t\treturn position.isAfter( this.start ) && position.isBefore( this.end );\n\t}\n\n\t/**\n\t * Checks whether this range contains given {@link module:engine/view/range~Range range}.\n\t *\n\t * @param {module:engine/view/range~Range} otherRange Range to check.\n\t * @returns {Boolean} `true` if given {@link module:engine/view/range~Range range} boundaries are contained by this range, `false`\n\t * otherwise.\n\t */\n\tcontainsRange( otherRange ) {\n\t\treturn this.containsPosition( otherRange.start ) && this.containsPosition( otherRange.end );\n\t}\n\n\t/**\n\t * Computes which part(s) of this {@link module:engine/view/range~Range range} is not a part of given\n\t * {@link module:engine/view/range~Range range}.\n\t * Returned array contains zero, one or two {@link module:engine/view/range~Range ranges}.\n\t *\n\t * Examples:\n\t *\n\t *\t\tlet foo = new Text( 'foo' );\n\t *\t\tlet img = new ContainerElement( 'img' );\n\t *\t\tlet bar = new Text( 'bar' );\n\t *\t\tlet p = new ContainerElement( 'p', null, [ foo, img, bar ] );\n\t *\n\t *\t\tlet range = new Range( new Position( foo, 2 ), new Position( bar, 1 ); // \"o\", img, \"b\" are in range.\n\t *\t\tlet otherRange = new Range( new Position( foo, 1 ), new Position( bar, 2 ); \"oo\", img, \"ba\" are in range.\n\t *\t\tlet transformed = range.getDifference( otherRange );\n\t *\t\t// transformed array has no ranges because `otherRange` contains `range`\n\t *\n\t *\t\totherRange = new Range( new Position( foo, 1 ), new Position( p, 2 ); // \"oo\", img are in range.\n\t *\t\ttransformed = range.getDifference( otherRange );\n\t *\t\t// transformed array has one range: from ( p, 2 ) to ( bar, 1 )\n\t *\n\t *\t\totherRange = new Range( new Position( p, 1 ), new Position( p, 2 ) ); // img is in range.\n\t *\t\ttransformed = range.getDifference( otherRange );\n\t *\t\t// transformed array has two ranges: from ( foo, 1 ) to ( p, 1 ) and from ( p, 2 ) to ( bar, 1 )\n\t *\n\t * @param {module:engine/view/range~Range} otherRange Range to differentiate against.\n\t * @returns {Array.<module:engine/view/range~Range>} The difference between ranges.\n\t */\n\tgetDifference( otherRange ) {\n\t\tconst ranges = [];\n\n\t\tif ( this.isIntersecting( otherRange ) ) {\n\t\t\t// Ranges intersect.\n\n\t\t\tif ( this.containsPosition( otherRange.start ) ) {\n\t\t\t\t// Given range start is inside this range. This means that we have to\n\t\t\t\t// add shrunken range - from the start to the middle of this range.\n\t\t\t\tranges.push( new Range( this.start, otherRange.start ) );\n\t\t\t}\n\n\t\t\tif ( this.containsPosition( otherRange.end ) ) {\n\t\t\t\t// Given range end is inside this range. This means that we have to\n\t\t\t\t// add shrunken range - from the middle of this range to the end.\n\t\t\t\tranges.push( new Range( otherRange.end, this.end ) );\n\t\t\t}\n\t\t} else {\n\t\t\t// Ranges do not intersect, return the original range.\n\t\t\tranges.push( Range.createFromRange( this ) );\n\t\t}\n\n\t\treturn ranges;\n\t}\n\n\t/**\n\t * Returns an intersection of this {@link module:engine/view/range~Range range} and given {@link module:engine/view/range~Range range}.\n\t * Intersection is a common part of both of those ranges. If ranges has no common part, returns `null`.\n\t *\n\t * Examples:\n\t *\n\t *\t\tlet foo = new Text( 'foo' );\n\t *\t\tlet img = new ContainerElement( 'img' );\n\t *\t\tlet bar = new Text( 'bar' );\n\t *\t\tlet p = new ContainerElement( 'p', null, [ foo, img, bar ] );\n\t *\n\t *\t\tlet range = new Range( new Position( foo, 2 ), new Position( bar, 1 ); // \"o\", img, \"b\" are in range.\n\t *\t\tlet otherRange = new Range( new Position( foo, 1 ), new Position( p, 2 ); // \"oo\", img are in range.\n\t *\t\tlet transformed = range.getIntersection( otherRange ); // range from ( foo, 1 ) to ( p, 2 ).\n\t *\n\t *\t\totherRange = new Range( new Position( bar, 1 ), new Position( bar, 3 ); \"ar\" is in range.\n\t *\t\ttransformed = range.getIntersection( otherRange ); // null - no common part.\n\t *\n\t * @param {module:engine/view/range~Range} otherRange Range to check for intersection.\n\t * @returns {module:engine/view/range~Range|null} A common part of given ranges or `null` if ranges have no common part.\n\t */\n\tgetIntersection( otherRange ) {\n\t\tif ( this.isIntersecting( otherRange ) ) {\n\t\t\t// Ranges intersect, so a common range will be returned.\n\t\t\t// At most, it will be same as this range.\n\t\t\tlet commonRangeStart = this.start;\n\t\t\tlet commonRangeEnd = this.end;\n\n\t\t\tif ( this.containsPosition( otherRange.start ) ) {\n\t\t\t\t// Given range start is inside this range. This means thaNt we have to\n\t\t\t\t// shrink common range to the given range start.\n\t\t\t\tcommonRangeStart = otherRange.start;\n\t\t\t}\n\n\t\t\tif ( this.containsPosition( otherRange.end ) ) {\n\t\t\t\t// Given range end is inside this range. This means that we have to\n\t\t\t\t// shrink common range to the given range end.\n\t\t\t\tcommonRangeEnd = otherRange.end;\n\t\t\t}\n\n\t\t\treturn new Range( commonRangeStart, commonRangeEnd );\n\t\t}\n\n\t\t// Ranges do not intersect, so they do not have common part.\n\t\treturn null;\n\t}\n\n\t/**\n\t * Creates a {@link module:engine/view/treewalker~TreeWalker TreeWalker} instance with this range as a boundary.\n\t *\n\t * @param {Object} options Object with configuration options. See {@link module:engine/view/treewalker~TreeWalker}.\n\t * @param {module:engine/view/position~Position} [options.startPosition]\n\t * @param {Boolean} [options.singleCharacters=false]\n\t * @param {Boolean} [options.shallow=false]\n\t * @param {Boolean} [options.ignoreElementEnd=false]\n\t */\n\tgetWalker( options = {} ) {\n\t\toptions.boundaries = this;\n\n\t\treturn new TreeWalker( options );\n\t}\n\n\t/**\n\t * Returns an iterator that iterates over all {@link module:engine/view/item~Item view items} that are in this range and returns\n\t * them.\n\t *\n\t * This method uses {@link module:engine/view/treewalker~TreeWalker} with `boundaries` set to this range and `ignoreElementEnd` option\n\t * set to `true`. However it returns only {@link module:engine/view/item~Item items},\n\t * not {@link module:engine/view/treewalker~TreeWalkerValue}.\n\t *\n\t * You may specify additional options for the tree walker. See {@link module:engine/view/treewalker~TreeWalker} for\n\t * a full list of available options.\n\t *\n\t * @param {Object} options Object with configuration options. See {@link module:engine/view/treewalker~TreeWalker}.\n\t * @returns {Iterable.<module:engine/view/item~Item>}\n\t */\n\t*getItems( options = {} ) {\n\t\toptions.boundaries = this;\n\t\toptions.ignoreElementEnd = true;\n\n\t\tconst treeWalker = new TreeWalker( options );\n\n\t\tfor ( let value of treeWalker ) {\n\t\t\tyield value.item;\n\t\t}\n\t}\n\n\t/**\n\t * Returns an iterator that iterates over all {@link module:engine/view/position~Position positions} that are boundaries or\n\t * contained in this range.\n\t *\n\t * This method uses {@link module:engine/view/treewalker~TreeWalker} with `boundaries` set to this range. However it returns only\n\t * {@link module:engine/view/position~Position positions}, not {@link module:engine/view/treewalker~TreeWalkerValue}.\n\t *\n\t * You may specify additional options for the tree walker. See {@link module:engine/view/treewalker~TreeWalker} for\n\t * a full list of available options.\n\t *\n\t * @param {Object} options Object with configuration options. See {@link module:engine/view/treewalker~TreeWalker}.\n\t * @returns {Iterable.<module:engine/view/position~Position>}\n\t */\n\t*getPositions( options = {} ) {\n\t\toptions.boundaries = this;\n\n\t\tconst treeWalker = new TreeWalker( options );\n\n\t\tyield treeWalker.position;\n\n\t\tfor ( let value of treeWalker ) {\n\t\t\tyield value.nextPosition;\n\t\t}\n\t}\n\n\t/**\n\t * Checks and returns whether this range intersects with given range.\n\t *\n\t * @param {module:engine/view/range~Range} otherRange Range to compare with.\n\t * @returns {Boolean} True if ranges intersect.\n\t */\n\tisIntersecting( otherRange ) {\n\t\treturn this.start.isBefore( otherRange.end ) && this.end.isAfter( otherRange.start );\n\t}\n\n\t/**\n\t * Creates a range from given parents and offsets.\n\t *\n\t * @param {module:engine/view/element~Element} startElement Start position parent element.\n\t * @param {Number} startOffset Start position offset.\n\t * @param {module:engine/view/element~Element} endElement End position parent element.\n\t * @param {Number} endOffset End position offset.\n\t * @returns {module:engine/view/range~Range} Created range.\n\t */\n\tstatic createFromParentsAndOffsets( startElement, startOffset, endElement, endOffset ) {\n\t\treturn new this(\n\t\t\tnew Position( startElement, startOffset ),\n\t\t\tnew Position( endElement, endOffset )\n\t\t);\n\t}\n\n\t/**\n\t * Creates and returns a new instance of Range which is equal to passed range.\n\t *\n\t * @param {module:engine/view/range~Range} range Range to clone.\n\t * @returns {module:engine/view/range~Range}\n\t */\n\tstatic createFromRange( range ) {\n\t\treturn new this( range.start, range.end );\n\t}\n\n\t/**\n\t * Creates a new range, spreading from specified {@link module:engine/view/position~Position position} to a position moved by\n\t * given `shift`. If `shift` is a negative value, shifted position is treated as the beginning of the range.\n\t *\n\t * @param {module:engine/view/position~Position} position Beginning of the range.\n\t * @param {Number} shift How long the range should be.\n\t * @returns {module:engine/view/range~Range}\n\t */\n\tstatic createFromPositionAndShift( position, shift ) {\n\t\tconst start = position;\n\t\tconst end = position.getShiftedBy( shift );\n\n\t\treturn shift > 0 ? new this( start, end ) : new this( end, start );\n\t}\n\n\t/**\n\t * Creates a range inside an {@link module:engine/view/element~Element element} which starts before the first child of\n\t * that element and ends after the last child of that element.\n\t *\n\t * @param {module:engine/view/element~Element} element Element which is a parent for the range.\n\t * @returns {module:engine/view/range~Range}\n\t */\n\tstatic createIn( element ) {\n\t\treturn this.createFromParentsAndOffsets( element, 0, element, element.childCount );\n\t}\n\n\t/**\n\t * Creates a range that starts before given {@link module:engine/view/item~Item view item} and ends after it.\n\t *\n\t * @param {module:engine/view/item~Item} item\n\t * @returns {module:engine/view/range~Range}\n\t */\n\tstatic createOn( item ) {\n\t\treturn this.createFromPositionAndShift( Position.createBefore( item ), 1 );\n\t}\n}\n\n// Function used by getEnlagred and getShrinked methods.\nfunction enlargeShrinkSkip( value ) {\n\tif ( value.item.is( 'attributeElement' ) || value.item.is( 'uiElement' ) ) {\n\t\treturn true;\n\t}\n\n\treturn false;\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/view/range.js","/**\n * The base implementation of `_.slice` without an iteratee call guard.\n *\n * @private\n * @param {Array} array The array to slice.\n * @param {number} [start=0] The start position.\n * @param {number} [end=array.length] The end position.\n * @returns {Array} Returns the slice of `array`.\n */\nfunction baseSlice(array, start, end) {\n  var index = -1,\n      length = array.length;\n\n  if (start < 0) {\n    start = -start > length ? 0 : (length + start);\n  }\n  end = end > length ? length : end;\n  if (end < 0) {\n    end += length;\n  }\n  length = start > end ? 0 : ((end - start) >>> 0);\n  start >>>= 0;\n\n  var result = Array(length);\n  while (++index < length) {\n    result[index] = array[index + start];\n  }\n  return result;\n}\n\nexport default baseSlice;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_baseSlice.js","/** Used as references for various `Number` constants. */\nvar MAX_SAFE_INTEGER = 9007199254740991;\n\n/** Used to detect unsigned integer values. */\nvar reIsUint = /^(?:0|[1-9]\\d*)$/;\n\n/**\n * Checks if `value` is a valid array-like index.\n *\n * @private\n * @param {*} value The value to check.\n * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.\n * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.\n */\nfunction isIndex(value, length) {\n  length = length == null ? MAX_SAFE_INTEGER : length;\n  return !!length &&\n    (typeof value == 'number' || reIsUint.test(value)) &&\n    (value > -1 && value % 1 == 0 && value < length);\n}\n\nexport default isIndex;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_isIndex.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/operation/insertoperation\n */\n\nimport Operation from './operation';\nimport Position from '../position';\nimport NodeList from '../nodelist';\nimport RemoveOperation from './removeoperation';\nimport writer from './../writer';\nimport { normalizeNodes } from './../writer';\nimport Text from '../text';\nimport Element from '../element';\n\n/**\n * Operation to insert one or more nodes at given position in the model.\n *\n * @extends module:engine/model/operation/operation~Operation\n */\nexport default class InsertOperation extends Operation {\n\t/**\n\t * Creates an insert operation.\n\t *\n\t * @param {module:engine/model/position~Position} position Position of insertion.\n\t * @param {module:engine/model/node~NodeSet} nodes The list of nodes to be inserted.\n\t * @param {Number} baseVersion {@link module:engine/model/document~Document#version} on which operation can be applied.\n\t */\n\tconstructor( position, nodes, baseVersion ) {\n\t\tsuper( baseVersion );\n\n\t\t/**\n\t\t * Position of insertion.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/model/position~Position} module:engine/model/operation/insertoperation~InsertOperation#position\n\t\t */\n\t\tthis.position = Position.createFromPosition( position );\n\n\t\t/**\n\t\t * List of nodes to insert.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/model/nodelist~NodeList} module:engine/model/operation/insertoperation~InsertOperation#nodeList\n\t\t */\n\t\tthis.nodes = new NodeList( normalizeNodes( nodes ) );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tget type() {\n\t\treturn 'insert';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t * @returns {module:engine/model/operation/insertoperation~InsertOperation}\n\t */\n\tclone() {\n\t\tconst nodes = new NodeList( [ ...this.nodes ].map( ( node ) => node.clone( true ) ) );\n\n\t\treturn new InsertOperation( this.position, nodes, this.baseVersion );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t * @returns {module:engine/model/operation/removeoperation~RemoveOperation}\n\t */\n\tgetReversed() {\n\t\treturn new RemoveOperation( this.position, this.nodes.maxOffset, this.baseVersion + 1 );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\t_execute() {\n\t\t// What happens here is that we want original nodes be passed to writer because we want original nodes\n\t\t// to be inserted to the model. But in InsertOperation, we want to keep those nodes as they were added\n\t\t// to the operation, not modified. For example, text nodes can get merged or cropped while Elements can\n\t\t// get children. It is important that InsertOperation has the copy of original nodes in intact state.\n\t\tconst originalNodes = this.nodes;\n\t\tthis.nodes = new NodeList( [ ...originalNodes ].map( ( node ) => node.clone( true ) ) );\n\n\t\tconst range = writer.insert( this.position, originalNodes );\n\n\t\treturn { range };\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.operation.InsertOperation';\n\t}\n\n\t/**\n\t * Creates `InsertOperation` object from deserilized object, i.e. from parsed JSON string.\n\t *\n\t * @param {Object} json Deserialized JSON object.\n\t * @param {module:engine/model/document~Document} document Document on which this operation will be applied.\n\t * @returns {module:engine/model/operation/insertoperation~InsertOperation}\n\t */\n\tstatic fromJSON( json, document ) {\n\t\tlet children = [];\n\n\t\tfor ( let child of json.nodes ) {\n\t\t\tif ( child.name ) {\n\t\t\t\t// If child has name property, it is an Element.\n\t\t\t\tchildren.push( Element.fromJSON( child ) );\n\t\t\t} else {\n\t\t\t\t// Otherwise, it is a Text node.\n\t\t\t\tchildren.push( Text.fromJSON( child ) );\n\t\t\t}\n\t\t}\n\n\t\treturn new InsertOperation( Position.fromJSON( json.position, document ), children, json.baseVersion );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/operation/insertoperation.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/operation/removeoperation\n */\n\nimport MoveOperation from './moveoperation';\nimport Position from '../position';\nimport Element from '../element';\nimport ReinsertOperation from './reinsertoperation';\n\n/**\n * Operation to remove a range of nodes.\n */\nexport default class RemoveOperation extends MoveOperation {\n\t/**\n\t * Creates a remove operation.\n\t *\n\t * @param {module:engine/model/position~Position} position Position before the first {@link module:engine/model/item~Item model item} to\n\t * remove.\n\t * @param {Number} howMany Offset size of removed range. {@link module:engine/model/item~Item Model items} will be removed starting\n\t * from `sourcePosition`, up to a `sourcePosition` with offset shifted by `howMany`.\n\t * @param {Number} baseVersion {@link module:engine/model/document~Document#version} on which operation can be applied.\n\t */\n\tconstructor( position, howMany, baseVersion ) {\n\t\tconst graveyard = position.root.document.graveyard;\n\t\tconst graveyardPosition = new Position( graveyard, [ graveyard.maxOffset, 0 ] );\n\n\t\tsuper( position, howMany, graveyardPosition, baseVersion );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tget type() {\n\t\treturn 'remove';\n\t}\n\n\t/**\n\t * Offset of the graveyard \"holder\" element, in which nodes removed by this operation are stored.\n\t *\n\t * @protected\n\t * @type {Number}\n\t */\n\tget _holderElementOffset() {\n\t\treturn this.targetPosition.path[ 0 ];\n\t}\n\n\t/**\n\t * Sets {@link module:engine/model/operation/removeoperation~RemoveOperation#_holderElementOffset}.\n\t *\n\t * @protected\n\t * @param {Number} offset\n\t */\n\tset _holderElementOffset( offset ) {\n\t\tthis.targetPosition.path[ 0 ] = offset;\n\t}\n\n\t/**\n\t * Flag informing whether this operation should insert \"holder\" element (`true`) or should move removed nodes\n\t * into existing \"holder\" element (`false`).\n\t *\n\t * It is `true` for each `RemoveOperation` that is the first `RemoveOperation` in it's delta that points to given holder element.\n\t * This way only one `RemoveOperation` in given delta will insert \"holder\" element.\n\t *\n\t * @protected\n\t * @type {Boolean}\n\t */\n\tget _needsHolderElement() {\n\t\tif ( this.delta ) {\n\t\t\t// Let's look up all operations from this delta in the same order as they are in the delta.\n\t\t\tfor ( let operation of this.delta.operations ) {\n\t\t\t\t// We are interested only in `RemoveOperation`s.\n\t\t\t\tif ( operation instanceof RemoveOperation ) {\n\t\t\t\t\t// If the first `RemoveOperation` in the delta is this operation, this operation\n\t\t\t\t\t// needs to insert holder element in the graveyard.\n\t\t\t\t\tif ( operation == this ) {\n\t\t\t\t\t\treturn true;\n\t\t\t\t\t} else if ( operation._holderElementOffset == this._holderElementOffset ) {\n\t\t\t\t\t\t// If there is a `RemoveOperation` in this delta that \"points\" to the same holder element offset,\n\t\t\t\t\t\t// that operation will already insert holder element at that offset. We should not create another holder.\n\t\t\t\t\t\treturn false;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t// By default `RemoveOperation` needs holder element, so set it so, if the operation does not have delta.\n\t\treturn true;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t * @returns {module:engine/model/operation/reinsertoperation~ReinsertOperation}\n\t */\n\tgetReversed() {\n\t\treturn new ReinsertOperation( this.targetPosition, this.howMany, this.sourcePosition, this.baseVersion + 1 );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t * @returns {module:engine/model/operation/removeoperation~RemoveOperation}\n\t */\n\tclone() {\n\t\tlet removeOperation = new RemoveOperation( this.sourcePosition, this.howMany, this.baseVersion );\n\t\tremoveOperation.targetPosition = Position.createFromPosition( this.targetPosition );\n\n\t\treturn removeOperation;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\t_execute() {\n\t\t// Insert \"holder\" element in graveyard root, if the operation needs it.\n\t\tif ( this._needsHolderElement ) {\n\t\t\tconst graveyard = this.targetPosition.root;\n\t\t\tconst holderElement = new Element( '$graveyardHolder' );\n\n\t\t\tgraveyard.insertChildren( this._holderElementOffset, holderElement );\n\n\t\t\t// If the operation removes nodes that are already in graveyard, it may happen that\n\t\t\t// the operation's source position is invalidated by inserting new holder element into the graveyard.\n\t\t\t// If that's the case, we need to fix source position path.\n\t\t\tif ( this.sourcePosition.root == graveyard && this.sourcePosition.path[ 0 ] >= this._holderElementOffset ) {\n\t\t\t\tthis.sourcePosition.path[ 0 ]++;\n\t\t\t}\n\t\t}\n\n\t\t// Then, execute as a move operation.\n\t\treturn super._execute();\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.operation.RemoveOperation';\n\t}\n\n\t/**\n\t * Creates `RemoveOperation` object from deserilized object, i.e. from parsed JSON string.\n\t *\n\t * @param {Object} json Deserialized JSON object.\n\t * @param {module:engine/model/document~Document} document Document on which this operation will be applied.\n\t * @returns {module:engine/model/operation/removeoperation~RemoveOperation}\n\t */\n\tstatic fromJSON( json, document ) {\n\t\tlet sourcePosition = Position.fromJSON( json.sourcePosition, document );\n\n\t\tconst removeOp = new RemoveOperation( sourcePosition, json.howMany, json.baseVersion );\n\t\tremoveOp.targetPosition = Position.fromJSON( json.targetPosition, document );\n\n\t\treturn removeOp;\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/operation/removeoperation.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/treewalker\n */\n\nimport Text from './text';\nimport TextProxy from './textproxy';\nimport Element from './element';\nimport Position from './position';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/**\n * Position iterator class. It allows to iterate forward and backward over the document.\n */\nexport default class TreeWalker {\n\t/**\n\t * Creates a range iterator. All parameters are optional, but you have to specify either `boundaries` or `startPosition`.\n\t *\n\t * @constructor\n\t * @param {Object} [options={}] Object with configuration.\n\t * @param {'forward'|'backward'} [options.direction='forward'] Walking direction.\n\t * @param {module:engine/model/range~Range} [options.boundaries=null] Range to define boundaries of the iterator.\n\t * @param {module:engine/model/position~Position} [options.startPosition] Starting position.\n\t * @param {Boolean} [options.singleCharacters=false] Flag indicating whether all consecutive characters with the same attributes\n\t * should be returned one by one as multiple {@link module:engine/model/textproxy~TextProxy} (`true`) objects or as one\n\t * {@link module:engine/model/textproxy~TextProxy} (`false`).\n\t * @param {Boolean} [options.shallow=false] Flag indicating whether iterator should enter elements or not. If the\n\t * iterator is shallow child nodes of any iterated node will not be returned along with `elementEnd` tag.\n\t * @param {Boolean} [options.ignoreElementEnd=false] Flag indicating whether iterator should ignore `elementEnd`\n\t * tags. If the option is true walker will not return a parent node of start position. If this option is `true`\n\t * each {@link module:engine/model/element~Element} will be returned once, while if the option is `false` they might be returned\n\t * twice: for `'elementStart'` and `'elementEnd'`.\n\t */\n\tconstructor( options = {} ) {\n\t\tif ( !options.boundaries && !options.startPosition ) {\n\t\t\t/**\n\t\t\t * Neither boundaries nor starting position have been defined.\n\t\t\t *\n\t\t\t * @error tree-walker-no-start-position\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'model-tree-walker-no-start-position: Neither boundaries nor starting position have been defined.' );\n\t\t}\n\n\t\tconst direction = options.direction || 'forward';\n\n\t\tif ( direction != 'forward' && direction != 'backward' ) {\n\t\t\tthrow new CKEditorError(\n\t\t\t\t'model-tree-walker-unknown-direction: Only `backward` and `forward` direction allowed.',\n\t\t\t\t{ direction }\n\t\t\t);\n\t\t}\n\n\t\t/**\n\t\t * Walking direction. Defaults `'forward'`.\n\t\t *\n\t\t * @readonly\n\t\t * @member {'backward'|'forward'} module:engine/model/treewalker~TreeWalker#direction\n\t\t */\n\t\tthis.direction = direction;\n\n\t\t/**\n\t\t * Iterator boundaries.\n\t\t *\n\t\t * When the iterator is walking `'forward'` on the end of boundary or is walking `'backward'`\n\t\t * on the start of boundary, then `{ done: true }` is returned.\n\t\t *\n\t\t * If boundaries are not defined they are set before first and after last child of the root node.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/model/range~Range} module:engine/model/treewalker~TreeWalker#boundaries\n\t\t */\n\t\tthis.boundaries = options.boundaries || null;\n\n\t\t/**\n\t\t * Iterator position. This is always static position, even if the initial position was a\n\t\t * {@link module:engine/model/liveposition~LivePosition live position}. If start position is not defined then position depends\n\t\t * on {@link #direction}. If direction is `'forward'` position starts form the beginning, when direction\n\t\t * is `'backward'` position starts from the end.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/model/position~Position} module:engine/model/treewalker~TreeWalker#position\n\t\t */\n\t\tif ( options.startPosition ) {\n\t\t\tthis.position = Position.createFromPosition( options.startPosition );\n\t\t} else {\n\t\t\tthis.position = Position.createFromPosition( this.boundaries[ this.direction == 'backward' ? 'end' : 'start' ] );\n\t\t}\n\n\t\t/**\n\t\t * Flag indicating whether all consecutive characters with the same attributes should be\n\t\t * returned as one {@link module:engine/model/textproxy~TextProxy} (`true`) or one by one (`false`).\n\t\t *\n\t\t * @readonly\n\t\t * @member {Boolean} module:engine/model/treewalker~TreeWalker#singleCharacters\n\t\t */\n\t\tthis.singleCharacters = !!options.singleCharacters;\n\n\t\t/**\n\t\t * Flag indicating whether iterator should enter elements or not. If the iterator is shallow child nodes of any\n\t\t * iterated node will not be returned along with `elementEnd` tag.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Boolean} module:engine/model/treewalker~TreeWalker#shallow\n\t\t */\n\t\tthis.shallow = !!options.shallow;\n\n\t\t/**\n\t\t * Flag indicating whether iterator should ignore `elementEnd` tags. If the option is true walker will not\n\t\t * return a parent node of the start position. If this option is `true` each {@link module:engine/model/element~Element} will\n\t\t * be returned once, while if the option is `false` they might be returned twice:\n\t\t * for `'elementStart'` and `'elementEnd'`.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Boolean} module:engine/model/treewalker~TreeWalker#ignoreElementEnd\n\t\t */\n\t\tthis.ignoreElementEnd = !!options.ignoreElementEnd;\n\n\t\t/**\n\t\t * Start boundary cached for optimization purposes.\n\t\t *\n\t\t * @private\n\t\t * @member {module:engine/model/element~Element} module:engine/model/treewalker~TreeWalker#_boundaryStartParent\n\t\t */\n\t\tthis._boundaryStartParent = this.boundaries ? this.boundaries.start.parent : null;\n\n\t\t/**\n\t\t * End boundary cached for optimization purposes.\n\t\t *\n\t\t * @private\n\t\t * @member {module:engine/model/element~Element} module:engine/model/treewalker~TreeWalker#_boundaryEndParent\n\t\t */\n\t\tthis._boundaryEndParent = this.boundaries ? this.boundaries.end.parent : null;\n\n\t\t/**\n\t\t * Parent of the most recently visited node. Cached for optimization purposes.\n\t\t *\n\t\t * @private\n\t\t * @member {module:engine/model/element~Element|module:engine/model/documentfragment~DocumentFragment}\n\t\t * module:engine/model/treewalker~TreeWalker#_visitedParent\n\t\t */\n\t\tthis._visitedParent = this.position.parent;\n\t}\n\n\t/**\n\t * Iterator interface.\n\t */\n\t[ Symbol.iterator ]() {\n\t\treturn this;\n\t}\n\n\t/**\n\t * Moves {@link #position} in the {@link #direction} skipping values as long as the callback function returns `true`.\n\t *\n\t * For example:\n\t *\n\t * \t\twalker.skip( value => value.type == 'text' ); // <paragraph>[]foo</paragraph> -> <paragraph>foo[]</paragraph>\n\t * \t\twalker.skip( () => true ); // Move the position to the end: <paragraph>[]foo</paragraph> -> <paragraph>foo</paragraph>[]\n\t * \t\twalker.skip( () => false ); // Do not move the position.\n\t *\n\t * @param {Function} skip Callback function. Gets {@link module:engine/model/treewalker~TreeWalkerValue} and should\n\t * return `true` if the value should be skipped or `false` if not.\n\t */\n\tskip( skip ) {\n\t\tlet done, value, prevPosition, prevVisitedParent;\n\n\t\tdo {\n\t\t\tprevPosition = this.position;\n\t\t\tprevVisitedParent = this._visitedParent;\n\n\t\t\t( { done, value } = this.next() );\n\t\t} while ( !done && skip( value ) );\n\n\t\tif ( !done ) {\n\t\t\tthis.position = prevPosition;\n\t\t\tthis._visitedParent = prevVisitedParent;\n\t\t}\n\t}\n\n\t/**\n\t * Iterator interface method.\n\t * Detects walking direction and makes step forward or backward.\n\t *\n\t * @returns {Object} Object implementing iterator interface, returning information about taken step.\n\t */\n\tnext() {\n\t\tif ( this.direction == 'forward' ) {\n\t\t\treturn this._next();\n\t\t} else {\n\t\t\treturn this._previous();\n\t\t}\n\t}\n\n\t/**\n\t * Makes a step forward in model. Moves the {@link #position} to the next position and returns the encountered value.\n\t *\n\t * @private\n\t * @returns {Object}\n\t * @returns {Boolean} return.done True if iterator is done.\n\t * @returns {module:engine/model/treewalker~TreeWalkerValue} return.value Information about taken step.\n\t */\n\t_next() {\n\t\tconst previousPosition = this.position;\n\t\tconst position = Position.createFromPosition( this.position );\n\t\tconst parent = this._visitedParent;\n\n\t\t// We are at the end of the root.\n\t\tif ( parent.parent === null && position.offset === parent.maxOffset ) {\n\t\t\treturn { done: true };\n\t\t}\n\n\t\t// We reached the walker boundary.\n\t\tif ( parent === this._boundaryEndParent && position.offset == this.boundaries.end.offset ) {\n\t\t\treturn { done: true };\n\t\t}\n\n\t\tconst node = position.textNode ? position.textNode : position.nodeAfter;\n\n\t\tif ( node instanceof Element ) {\n\t\t\tif ( !this.shallow ) {\n\t\t\t\t// Manual operations on path internals for optimization purposes. Here and in the rest of the method.\n\t\t\t\tposition.path.push( 0 );\n\t\t\t\tthis._visitedParent = node;\n\t\t\t} else {\n\t\t\t\tposition.offset++;\n\t\t\t}\n\n\t\t\tthis.position = position;\n\n\t\t\treturn formatReturnValue( 'elementStart', node, previousPosition, position, 1 );\n\t\t} else if ( node instanceof Text ) {\n\t\t\tlet charactersCount, offsetInTextNode;\n\n\t\t\tif ( this.singleCharacters ) {\n\t\t\t\tcharactersCount = 1;\n\t\t\t} else {\n\t\t\t\tlet offset = node.endOffset;\n\n\t\t\t\tif ( this._boundaryEndParent == parent && this.boundaries.end.offset < offset ) {\n\t\t\t\t\toffset = this.boundaries.end.offset;\n\t\t\t\t}\n\n\t\t\t\tcharactersCount = offset - position.offset;\n\t\t\t}\n\n\t\t\toffsetInTextNode = position.offset - node.startOffset;\n\n\t\t\tconst item = new TextProxy( node, offsetInTextNode, charactersCount );\n\n\t\t\tposition.offset += charactersCount;\n\t\t\tthis.position = position;\n\n\t\t\treturn formatReturnValue( 'text', item, previousPosition, position, charactersCount );\n\t\t} else {\n\t\t\t// `node` is not set, we reached the end of current `parent`.\n\t\t\tposition.path.pop();\n\t\t\tposition.offset++;\n\t\t\tthis.position = position;\n\t\t\tthis._visitedParent = parent.parent;\n\n\t\t\tif ( this.ignoreElementEnd ) {\n\t\t\t\treturn this._next();\n\t\t\t} else {\n\t\t\t\treturn formatReturnValue( 'elementEnd', parent, previousPosition, position );\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Makes a step backward in model. Moves the {@link #position} to the previous position and returns the encountered value.\n\t *\n\t * @private\n\t * @returns {Object}\n\t * @returns {Boolean} return.done True if iterator is done.\n\t * @returns {module:engine/model/treewalker~TreeWalkerValue} return.value Information about taken step.\n\t */\n\t_previous() {\n\t\tconst previousPosition = this.position;\n\t\tconst position = Position.createFromPosition( this.position );\n\t\tconst parent = this._visitedParent;\n\n\t\t// We are at the beginning of the root.\n\t\tif ( parent.parent === null && position.offset === 0 ) {\n\t\t\treturn { done: true };\n\t\t}\n\n\t\t// We reached the walker boundary.\n\t\tif ( parent == this._boundaryStartParent && position.offset == this.boundaries.start.offset ) {\n\t\t\treturn { done: true };\n\t\t}\n\n\t\t// Get node just before current position\n\t\tconst node = position.textNode ? position.textNode : position.nodeBefore;\n\n\t\tif ( node instanceof Element ) {\n\t\t\tposition.offset--;\n\n\t\t\tif ( !this.shallow ) {\n\t\t\t\tposition.path.push( node.maxOffset );\n\t\t\t\tthis.position = position;\n\t\t\t\tthis._visitedParent = node;\n\n\t\t\t\tif ( this.ignoreElementEnd ) {\n\t\t\t\t\treturn this._previous();\n\t\t\t\t} else {\n\t\t\t\t\treturn formatReturnValue( 'elementEnd', node, previousPosition, position );\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\tthis.position = position;\n\n\t\t\t\treturn formatReturnValue( 'elementStart', node, previousPosition, position, 1 );\n\t\t\t}\n\t\t} else if ( node instanceof Text ) {\n\t\t\tlet charactersCount, offsetInTextNode;\n\n\t\t\tif ( this.singleCharacters ) {\n\t\t\t\tcharactersCount = 1;\n\t\t\t} else {\n\t\t\t\tlet offset = node.startOffset;\n\n\t\t\t\tif ( this._boundaryStartParent == parent && this.boundaries.start.offset > offset ) {\n\t\t\t\t\toffset = this.boundaries.start.offset;\n\t\t\t\t}\n\n\t\t\t\tcharactersCount = position.offset - offset;\n\t\t\t}\n\n\t\t\toffsetInTextNode = position.offset - node.startOffset;\n\n\t\t\tconst item = new TextProxy( node, offsetInTextNode - charactersCount, charactersCount );\n\n\t\t\tposition.offset -= charactersCount;\n\t\t\tthis.position = position;\n\n\t\t\treturn formatReturnValue( 'text', item, previousPosition, position, charactersCount );\n\t\t} else {\n\t\t\t// `node` is not set, we reached the beginning of current `parent`.\n\t\t\tposition.path.pop();\n\t\t\tthis.position = position;\n\t\t\tthis._visitedParent = parent.parent;\n\n\t\t\treturn formatReturnValue( 'elementStart', parent, previousPosition, position, 1 );\n\t\t}\n\t}\n}\n\nfunction formatReturnValue( type, item, previousPosition, nextPosition, length ) {\n\treturn {\n\t\tdone: false,\n\t\tvalue: {\n\t\t\ttype: type,\n\t\t\titem: item,\n\t\t\tpreviousPosition: previousPosition,\n\t\t\tnextPosition: nextPosition,\n\t\t\tlength: length\n\t\t}\n\t};\n}\n\n/**\n * Type of the step made by {@link module:engine/model/treewalker~TreeWalker}.\n * Possible values: `'elementStart'` if walker is at the beginning of a node, `'elementEnd'` if walker is at the end of node,\n * `'character'` if walker traversed over a character, or `'text'` if walker traversed over multiple characters (available in\n * character merging mode, see {@link module:engine/model/treewalker~TreeWalker#constructor}).\n *\n * @typedef {'elementStart'|'elementEnd'|'character'|'text'} module:engine/model/treewalker~TreeWalkerValueType\n */\n\n/**\n * Object returned by {@link module:engine/model/treewalker~TreeWalker} when traversing tree model.\n *\n * @typedef {Object} module:engine/model/treewalker~TreeWalkerValue\n * @property {module:engine/model/treewalker~TreeWalkerValueType} type\n * @property {module:engine/model/item~Item} item Item between old and new positions of {@link module:engine/model/treewalker~TreeWalker}.\n * @property {module:engine/model/position~Position} previousPosition Previous position of the iterator.\n * * Forward iteration: For `'elementEnd'` it is the last position inside the element. For all other types it is the\n * position before the item. Note that it is more efficient to use this position then calculate the position before\n * the node using {@link module:engine/model/position~Position.createBefore}. It is also more efficient to get the\n * position after node by shifting `previousPosition` by `length`, using {@link module:engine/model/position~Position#getShiftedBy},\n * then calculate the position using {@link module:engine/model/position~Position.createAfter}.\n * * Backward iteration: For `'elementStart'` it is the first position inside the element. For all other types it is\n * the position after item.\n * @property {module:engine/model/position~Position} nextPosition Next position of the iterator.\n * * Forward iteration: For `'elementStart'` it is the first position inside the element. For all other types it is\n * the position after the item.\n * * Backward iteration: For `'elementEnd'` it is last position inside element. For all other types it is the position\n * before the item.\n * @property {Number} [length] Length of the item. For `'elementStart'` and `'character'` it is 1. For `'text'` it is\n * the length of the text. For `'elementEnd'` it is undefined.\n */\n\n/**\n * Tree walking directions.\n *\n * @typedef {'forward'|'backward'} module:engine/view/treewalker~TreeWalkerDirection\n */\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/treewalker.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/containerelement\n */\n\nimport Element from './element';\n\n/**\n * Containers are elements which define document structure. They define boundaries for\n * {@link module:engine/view/attributeelement~AttributeElement attributes}. They are mostly use for block elements like `<p>` or `<div>`.\n *\n * Editing engine does not define fixed HTML DTD. This is why the type of the {@link module:engine/view/element~Element} need to\n * be defined by the feature developer.\n *\n * Creating an element you should use `ContainerElement` class or {@link module:engine/view/attributeelement~AttributeElement}. This is\n * important to define the type of the element because of two reasons:\n *\n * Firstly, {@link module:engine/view/domconverter~DomConverter} needs the information what is an editable block to convert elements to\n * DOM properly. {@link module:engine/view/domconverter~DomConverter} will ensure that `ContainerElement` is editable and it is possible\n * to put caret inside it, even if the container is empty.\n *\n * Secondly, {@link module:engine/view/writer~writer view writer} uses this information.\n * Nodes {@link module:engine/view/writer~writer.breakAttributes breaking} and {@link module:engine/view/writer~writer.mergeAttributes\n * merging}\n * is performed only in a bounds of a container nodes.\n *\n * For instance if `<p>` is an container and `<b>` is attribute:\n *\n *\t\t<p><b>fo^o</b></p>\n *\n * {@link module:engine/view/writer~writer.breakAttributes breakAttributes} will create:\n *\n *\t\t<p><b>fo</b><b>o</b></p>\n *\n * There might be a need to mark `<span>` element as a container node, for example in situation when it will be a\n * container of an inline widget:\n *\n *\t\t<span color=\"red\">foobar</span>\t\t// attribute\n *\t\t<span data-widget>foobar</span>\t\t// container\n *\n * @extends module:engine/view/element~Element\n */\nexport default class ContainerElement extends Element {\n\t/**\n\t * Creates a container element.\n\t *\n\t * @see module:engine/view/element~Element\n\t */\n\tconstructor( name, attrs, children ) {\n\t\tsuper( name, attrs, children );\n\n\t\t/**\n\t\t * Returns block {@link module:engine/view/filler filler} offset or `null` if block filler is not needed.\n\t\t *\n\t\t * @method #getFillerOffset\n\t\t * @returns {Number|null} Block filler offset or `null` if block filler is not needed.\n\t\t */\n\t\tthis.getFillerOffset = getFillerOffset;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tis( type, name = null ) {\n\t\tif ( !name ) {\n\t\t\treturn type == 'containerElement' || super.is( type );\n\t\t} else {\n\t\t\treturn ( type == 'containerElement' && name == this.name ) || super.is( type, name );\n\t\t}\n\t}\n}\n\n// Returns block {@link module:engine/view/filler filler} offset or `null` if block filler is not needed.\n//\n// @returns {Number|null} Block filler offset or `null` if block filler is not needed.\nfunction getFillerOffset() {\n\t/*jshint validthis:true */\n\treturn this.childCount === 0 ? 0 : null;\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/view/containerelement.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module image/image/utils\n */\n\nimport { widgetize, isWidget } from '../widget/utils';\nimport ModelElement from '@ckeditor/ckeditor5-engine/src/model/element';\n\nconst imageSymbol = Symbol( 'isImage' );\n\n/**\n * Converts given {@link module:engine/view/element~Element} to image widget:\n * * adds {@link module:engine/view/element~Element#setCustomProperty custom property} allowing to recognize image widget element,\n * * calls {@link module:image/widget/utils~widgetize widgetize} function with proper element's label creator.\n *\n * @param {module:engine/view/element~Element} viewElement\n * @param {String} label Element's label. It will be concatenated with image's `alt` attribute if one is present.\n * @returns {module:engine/view/element~Element}\n */\nexport function toImageWidget( viewElement, label ) {\n\tviewElement.setCustomProperty( imageSymbol, true );\n\n\treturn widgetize( viewElement, { label: labelCreator } );\n\n\tfunction labelCreator() {\n\t\tconst imgElement = viewElement.getChild( 0 );\n\t\tconst altText = imgElement.getAttribute( 'alt' );\n\n\t\treturn altText ? `${ altText } ${ label }` : label;\n\t}\n}\n\n/**\n * Checks if given view element is an image widget.\n *\n * @param {module:engine/view/element~Element} viewElement\n * @returns {Boolean}\n */\nexport function isImageWidget( viewElement ) {\n\treturn !!viewElement.getCustomProperty( imageSymbol ) && isWidget( viewElement );\n}\n\n/**\n * Checks if provided modelElement is an instance of {@link module:engine/model/element~Element Element} and its name\n * is `image`.\n *\n * @param {module:engine/model/element~Element} modelElement\n * @returns {Boolean}\n */\nexport function isImage( modelElement ) {\n\treturn modelElement instanceof ModelElement && modelElement.name == 'image';\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-image/src/image/utils.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/isiterable\n */\n\n/**\n * Checks if value implements iterator interface.\n *\n * @param {*} value The value to check.\n * @returns {Boolean} True if value implements iterator interface.\n */\nexport default function isIterable( value ) {\n\treturn !!( value && value[ Symbol.iterator ] );\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/isiterable.js","import SetCache from './_SetCache';\nimport arrayIncludes from './_arrayIncludes';\nimport arrayIncludesWith from './_arrayIncludesWith';\nimport cacheHas from './_cacheHas';\nimport createSet from './_createSet';\nimport setToArray from './_setToArray';\n\n/** Used as the size to enable large array optimizations. */\nvar LARGE_ARRAY_SIZE = 200;\n\n/**\n * The base implementation of `_.uniqBy` without support for iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new duplicate free array.\n */\nfunction baseUniq(array, iteratee, comparator) {\n  var index = -1,\n      includes = arrayIncludes,\n      length = array.length,\n      isCommon = true,\n      result = [],\n      seen = result;\n\n  if (comparator) {\n    isCommon = false;\n    includes = arrayIncludesWith;\n  }\n  else if (length >= LARGE_ARRAY_SIZE) {\n    var set = iteratee ? null : createSet(array);\n    if (set) {\n      return setToArray(set);\n    }\n    isCommon = false;\n    includes = cacheHas;\n    seen = new SetCache;\n  }\n  else {\n    seen = iteratee ? [] : result;\n  }\n  outer:\n  while (++index < length) {\n    var value = array[index],\n        computed = iteratee ? iteratee(value) : value;\n\n    value = (comparator || value !== 0) ? value : 0;\n    if (isCommon && computed === computed) {\n      var seenIndex = seen.length;\n      while (seenIndex--) {\n        if (seen[seenIndex] === computed) {\n          continue outer;\n        }\n      }\n      if (iteratee) {\n        seen.push(computed);\n      }\n      result.push(value);\n    }\n    else if (!includes(seen, computed, comparator)) {\n      if (seen !== result) {\n        seen.push(computed);\n      }\n      result.push(value);\n    }\n  }\n  return result;\n}\n\nexport default baseUniq;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_baseUniq.js","/**\n * Checks if `value` is object-like. A value is object-like if it's not `null`\n * and has a `typeof` result of \"object\".\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is object-like, else `false`.\n * @example\n *\n * _.isObjectLike({});\n * // => true\n *\n * _.isObjectLike([1, 2, 3]);\n * // => true\n *\n * _.isObjectLike(_.noop);\n * // => false\n *\n * _.isObjectLike(null);\n * // => false\n */\nfunction isObjectLike(value) {\n  return !!value && typeof value == 'object';\n}\n\nexport default isObjectLike;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/isObjectLike.js","import isObjectLike from './isObjectLike';\n\n/** `Object#toString` result references. */\nvar symbolTag = '[object Symbol]';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/**\n * Used to resolve the\n * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)\n * of values.\n */\nvar objectToString = objectProto.toString;\n\n/**\n * Checks if `value` is classified as a `Symbol` primitive or object.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is correctly classified,\n *  else `false`.\n * @example\n *\n * _.isSymbol(Symbol.iterator);\n * // => true\n *\n * _.isSymbol('abc');\n * // => false\n */\nfunction isSymbol(value) {\n  return typeof value == 'symbol' ||\n    (isObjectLike(value) && objectToString.call(value) == symbolTag);\n}\n\nexport default isSymbol;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/isSymbol.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/conversion/buildmodelconverter\n */\n\nimport {\n\tinsertElement,\n\tinsertUIElement,\n\tsetAttribute,\n\tremoveAttribute,\n\tremoveUIElement,\n\twrapItem,\n\tunwrapItem,\n\twrapRange,\n\tunwrapRange\n} from './model-to-view-converters';\n\nimport { convertSelectionAttribute, convertSelectionMarker } from './model-selection-to-view-converters';\n\nimport ViewAttributeElement from '../view/attributeelement';\nimport ViewContainerElement from '../view/containerelement';\nimport ViewUIElement from '../view/uielement';\n\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/**\n * Provides chainable, high-level API to easily build basic model-to-view converters that are appended to given\n * dispatchers. In many cases, this is the API that should be used to specify how abstract model elements and\n * attributes should be represented in the view (and then later in DOM). Instances of this class are created by\n * {@link module:engine/conversion/buildmodelconverter~buildModelConverter}.\n *\n * If you need more complex converters, see {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher},\n * {@link module:engine/conversion/model-to-view-converters}, {@link module:engine/conversion/modelconsumable~ModelConsumable},\n * {@link module:engine/conversion/mapper~Mapper}.\n *\n * Using this API it is possible to create four kinds of converters:\n *\n * 1. Model element to view element converter. This is a converter that takes the model element and represents it\n * in the view.\n *\n *\t\tbuildModelConverter().for( dispatcher ).fromElement( 'paragraph' ).toElement( 'p' );\n *\t\tbuildModelConverter().for( dispatcher ).fromElement( 'image' ).toElement( 'img' );\n *\n * 2. Model attribute to view attribute converter. This is a converter that operates on model element attributes\n * and converts them to view element attributes. It is suitable for elements like `image` (`src`, `title` attributes).\n *\n *\t\tbuildModelConverter().for( dispatcher ).fromElement( 'image' ).toElement( 'img' );\n *\t\tbuildModelConverter().for( dispatcher ).fromAttribute( 'src' ).toAttribute();\n *\n * 3. Model attribute to view element converter. This is a converter that takes model attributes and represents them\n * as view elements. Elements created by this kind of converter are wrapping other view elements. Wrapped view nodes\n * correspond to model nodes had converter attribute. It is suitable for attributes like `bold`, where `bold` attribute\n * set on model text nodes is converter to `strong` view element.\n *\n *\t\tbuildModelConverter().for( dispatcher ).fromAttribute( 'bold' ).toElement( 'strong' );\n *\n * 4. Model marker to view element converter. This is a converter that converts markers from given group to view attribute element.\n * Markers, basically, are {@link module:engine/model/liverange~LiveRange} instances, that are named. In this conversion, model range is\n * converted to view range, then that view range is wrapped (or unwrapped, if range is removed) in a view attribute element.\n * To learn more about markers, see {@link module:engine/model/markercollection~MarkerCollection}.\n *\n *\t\tconst viewSpanSearchResult = new ViewAttributeElement( 'span', { class: 'search-result' } );\n *\t\tbuildModelConverter().for( dispatcher ).fromMarker( 'searchResult' ).toElement( viewSpanSearchResult );\n *\n * It is possible to provide various different parameters for\n * {@link module:engine/conversion/buildmodelconverter~ModelConverterBuilder#toElement}\n * and {@link module:engine/conversion/buildmodelconverter~ModelConverterBuilder#toAttribute} methods.\n * See their descriptions to learn more.\n *\n * It is also possible to {@link module:engine/conversion/buildmodelconverter~ModelConverterBuilder#withPriority change default priority}\n * of created converters to decide which converter should be fired earlier and which later. This is useful if you have\n * a general converter but also want to provide different special-case converters (i.e. given model element is converted\n * always to given view element, but if it has given attribute it is converter to other view element). For this,\n * use {@link module:engine/conversion/buildmodelconverter~ModelConverterBuilder#withPriority withPriority} right after `from...` method.\n *\n * Note that `to...` methods are \"terminators\", which means that should be the last one used in building converter.\n *\n * You can use {@link module:engine/conversion/buildviewconverter~ViewConverterBuilder}\n * to create \"opposite\" converters - from view to model.\n */\nclass ModelConverterBuilder {\n\t/**\n\t * Creates `ModelConverterBuilder` with given `dispatchers` registered to it.\n\t */\n\tconstructor() {\n\t\t/**\n\t\t * Dispatchers to which converters will be attached.\n\t\t *\n\t\t * @type {Array.<module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher>}\n\t\t * @private\n\t\t */\n\t\tthis._dispatchers = [];\n\n\t\t/**\n\t\t * Contains data about registered \"from\" query.\n\t\t *\n\t\t * @type {Object}\n\t\t * @private\n\t\t */\n\t\tthis._from = null;\n\t}\n\n\t/**\n\t * Set one or more dispatchers which the built converter will be attached to.\n\t *\n\t * @chainable\n\t * @param {...module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher} dispatchers One or more dispatchers.\n\t * @returns {module:engine/conversion/buildmodelconverter~ModelConverterBuilder}\n\t */\n\tfor( ...dispatchers ) {\n\t\tthis._dispatchers = dispatchers;\n\n\t\treturn this;\n\t}\n\n\t/**\n\t * Registers what model element should be converted.\n\t *\n\t * @chainable\n\t * @param {String} elementName Name of element to convert.\n\t * @returns {module:engine/conversion/buildmodelconverter~ModelConverterBuilder}\n\t */\n\tfromElement( elementName ) {\n\t\tthis._from = {\n\t\t\ttype: 'element',\n\t\t\tname: elementName,\n\t\t\tpriority: null\n\t\t};\n\n\t\treturn this;\n\t}\n\n\t/**\n\t * Registers what model attribute should be converted.\n\t *\n\t * @chainable\n\t * @param {String} key Key of attribute to convert.\n\t * @returns {module:engine/conversion/buildmodelconverter~ModelConverterBuilder}\n\t */\n\tfromAttribute( key ) {\n\t\tthis._from = {\n\t\t\ttype: 'attribute',\n\t\t\tkey: key,\n\t\t\tpriority: null\n\t\t};\n\n\t\treturn this;\n\t}\n\n\t/**\n\t * Registers what type of non-collapsed marker should be converted. For collapsed markers conversion, see\n\t * {@link #fromCollapsedMarker}.\n\t *\n\t * @chainable\n\t * @param {String} markerName Name of marker to convert.\n\t * @returns {module:engine/conversion/buildmodelconverter~ModelConverterBuilder}\n\t */\n\tfromMarker( markerName ) {\n\t\tthis._from = {\n\t\t\ttype: 'marker',\n\t\t\tname: markerName,\n\t\t\tpriority: null,\n\t\t\tcollapsed: false\n\t\t};\n\n\t\treturn this;\n\t}\n\n\t/**\n\t * Registers what type of collapsed marker should be converted. For non-collapsed markers conversion,\n\t * see {@link #fromMarker}.\n\t *\n\t * @chainable\n\t * @param {String} markerName Name of marker to convert.\n\t * @returns {module:engine/conversion/buildmodelconverter~ModelConverterBuilder}\n\t */\n\tfromCollapsedMarker( markerName ) {\n\t\tthis._from = {\n\t\t\ttype: 'marker',\n\t\t\tname: markerName,\n\t\t\tpriority: null,\n\t\t\tcollapsed: true\n\t\t};\n\n\t\treturn this;\n\t}\n\n\t/**\n\t * Changes default priority for built converter. The lower the number, the earlier converter will be fired.\n\t * Default priority is `10`.\n\t *\n\t * **Note:** Keep in mind that event priority, that is set by this modifier, is used for attribute priority\n\t * when {@link module:engine/view/writer~writer} is used. This changes how view elements are ordered,\n\t * i.e.: `<strong><em>foo</em></strong>` vs `<em><strong>foo</strong></em>`. Using priority you can also\n\t * prevent node merging, i.e.: `<span class=\"bold\"><span class=\"theme\">foo</span><span>` vs `<span class=\"bold theme\">foo</span>`.\n\t * If you want to prevent merging, just set different priority for both converters.\n\t *\n\t *\t\tbuildModelConverter().for( dispatcher ).fromAttribute( 'bold' ).withPriority( 2 ).toElement( 'strong' );\n\t *\t\tbuildModelConverter().for( dispatcher ).fromAttribute( 'italic' ).withPriority( 3 ).toElement( 'em' );\n\t *\n\t * @chainable\n\t * @param {Number} priority Converter priority.\n\t * @returns {module:engine/conversion/buildmodelconverter~ModelConverterBuilder}\n\t */\n\twithPriority( priority ) {\n\t\tthis._from.priority = priority;\n\n\t\treturn this;\n\t}\n\n\t/**\n\t * Registers what view element will be created by converter.\n\t *\n\t * Method accepts various ways of providing how the view element will be created. You can pass view element name as\n\t * `string`, view element instance which will be cloned and used, or creator function which returns view element that\n\t * will be used. Keep in mind that when you view element instance or creator function, it has to be/return a\n\t * proper type of view element: {@link module:engine/view/containerelement~ContainerElement ViewContainerElement} if you convert\n\t * from element or {@link module:engine/view/attributeelement~AttributeElement ViewAttributeElement} if you convert from attribute.\n\t *\n\t *\t\tbuildModelConverter().for( dispatcher ).fromElement( 'paragraph' ).toElement( 'p' );\n\t *\n\t *\t\tbuildModelConverter().for( dispatcher ).fromElement( 'image' ).toElement( new ViewContainerElement( 'img' ) );\n\t *\n\t *\t\tbuildModelConverter().for( dispatcher )\n\t *\t\t\t.fromElement( 'header' )\n\t *\t\t\t.toElement( ( data ) => new ViewContainerElement( 'h' + data.item.getAttribute( 'level' ) ) );\n\t *\n\t *\t\tbuildModelConverter().for( dispatcher ).fromAttribute( 'bold' ).toElement( new ViewAttributeElement( 'strong' ) );\n\t *\n\t * Creator function will be passed different values depending whether conversion is from element or from attribute:\n\t *\n\t * * from element: dispatcher's\n\t * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:insert insert event}\n\t * parameters will be passed,\n\t * * from attribute: there is one parameter and it is attribute value.\n\t *\n\t * This method also registers model selection to view selection converter, if conversion is from attribute.\n\t *\n\t * This method creates the converter and adds it as a callback to a proper\n\t * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher conversion dispatcher} event.\n\t *\n\t * @param {String|module:engine/view/element~Element|Function} element Element created by converter or\n\t * a function that returns view element.\n\t */\n\ttoElement( element ) {\n\t\tconst priority = this._from.priority === null ? 'normal' : this._from.priority;\n\n\t\tfor ( let dispatcher of this._dispatchers ) {\n\t\t\tif ( this._from.type == 'element' ) {\n\t\t\t\t// From model element to view element -> insert element.\n\t\t\t\telement = typeof element == 'string' ? new ViewContainerElement( element ) : element;\n\n\t\t\t\tdispatcher.on( 'insert:' + this._from.name, insertElement( element ), { priority } );\n\t\t\t} else if ( this._from.type == 'attribute' ) {\n\t\t\t\t// From model attribute to view element -> wrap and unwrap.\n\t\t\t\telement = typeof element == 'string' ? new ViewAttributeElement( element ) : element;\n\n\t\t\t\tdispatcher.on( 'addAttribute:' + this._from.key, wrapItem( element ), { priority } );\n\t\t\t\tdispatcher.on( 'changeAttribute:' + this._from.key, wrapItem( element ), { priority } );\n\t\t\t\tdispatcher.on( 'removeAttribute:' + this._from.key, unwrapItem( element ), { priority } );\n\n\t\t\t\tdispatcher.on( 'selectionAttribute:' + this._from.key, convertSelectionAttribute( element ), { priority } );\n\t\t\t} else {\n\t\t\t\tif ( this._from.collapsed ) {\n\t\t\t\t\t// From collapsed marker to view element -> insertUIElement, removeUIElement.\n\t\t\t\t\telement = typeof element == 'string' ? new ViewUIElement( element ) : element;\n\n\t\t\t\t\tdispatcher.on( 'addMarker:' + this._from.name, insertUIElement( element ), { priority } );\n\t\t\t\t\tdispatcher.on( 'removeMarker:' + this._from.name, removeUIElement( element ), { priority } );\n\t\t\t\t} else {\n\t\t\t\t\t// From non-collapsed marker to view element -> wrapRange and unwrapRange.\n\t\t\t\t\telement = typeof element == 'string' ? new ViewAttributeElement( element ) : element;\n\n\t\t\t\t\tdispatcher.on( 'addMarker:' + this._from.name, wrapRange( element ), { priority } );\n\t\t\t\t\tdispatcher.on( 'removeMarker:' + this._from.name, unwrapRange( element ), { priority } );\n\n\t\t\t\t\tdispatcher.on( 'selectionMarker:' + this._from.name, convertSelectionMarker( element ), { priority } );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Registers what view attribute will be created by converter. Keep in mind, that only model attribute to\n\t * view attribute conversion is supported.\n\t *\n\t * Method accepts various ways of providing how the view attribute will be created:\n\t *\n\t * * for no passed parameter, attribute key and value will be converted 1-to-1 to view attribute,\n\t * * if you pass one `string`, it will be used as new attribute key while attribute value will be copied,\n\t * * if you pass two `string`s, first one will be used as new attribute key and second one as new attribute value,\n\t * * if you pass a function, it is expected to return an object with `key` and `value` properties representing attribute key and value.\n\t * This function will be passed model attribute value and model attribute key as first two parameters and then\n\t * all dispatcher's\n\t * {module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:changeAttribute changeAttribute event}\n\t * parameters.\n\t *\n\t *\t\tbuildModelConverter().for( dispatcher ).fromAttribute( 'class' ).toAttribute( '' );\n\t *\n\t *\t\tbuildModelConverter().for( dispatcher ).fromAttribute( 'linkTitle' ).toAttribute( 'title' );\n\t *\n\t *\t\tbuildModelConverter().for( dispatcher ).fromAttribute( 'highlighted' ).toAttribute( 'style', 'background:yellow' );\n\t *\n\t *\t\tbuildModelConverter().for( dispatcher )\n\t *\t\t\t.fromAttribute( 'theme' )\n\t *\t\t\t.toAttribute( ( value ) => ( { key: 'class', value: value + '-theme' } ) );\n\t *\n\t * This method creates the converter and adds it as a callback to a proper\n\t * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher conversion dispatcher} event.\n\t *\n\t * @param {String|Function} [keyOrCreator] Attribute key or a creator function.\n\t * @param {*} [value] Attribute value.\n\t */\n\ttoAttribute( keyOrCreator, value ) {\n\t\tif ( this._from.type != 'attribute' ) {\n\t\t\t/**\n\t\t\t * To-attribute conversion is supported only for model attributes.\n\t\t\t *\n\t\t\t * @error build-model-converter-element-to-attribute\n\t\t\t * @param {module:engine/model/range~Range} range\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'build-model-converter-non-attribute-to-attribute: ' +\n\t\t\t\t'To-attribute conversion is supported only from model attributes.' );\n\t\t}\n\n\t\tlet attributeCreator;\n\n\t\tif ( !keyOrCreator ) {\n\t\t\t// If `keyOrCreator` is not set, we assume default behavior which is 1:1 attribute re-write.\n\t\t\t// This is also a default behavior for `setAttribute` converter when no attribute creator is passed.\n\t\t\tattributeCreator = undefined;\n\t\t} else if ( typeof keyOrCreator == 'string' ) {\n\t\t\t// `keyOrCreator` is an attribute key.\n\n\t\t\tif ( value ) {\n\t\t\t\t// If value is set, create \"dumb\" creator that always returns the same object.\n\t\t\t\tattributeCreator = function() {\n\t\t\t\t\treturn { key: keyOrCreator, value: value };\n\t\t\t\t};\n\t\t\t} else {\n\t\t\t\t// If value is not set, take it from the passed parameter.\n\t\t\t\tattributeCreator = function( value ) {\n\t\t\t\t\treturn { key: keyOrCreator, value: value };\n\t\t\t\t};\n\t\t\t}\n\t\t} else {\n\t\t\t// `keyOrCreator` is an attribute creator function.\n\t\t\tattributeCreator = keyOrCreator;\n\t\t}\n\n\t\tfor ( let dispatcher of this._dispatchers ) {\n\t\t\tconst options = { priority: this._from.priority || 'normal' };\n\n\t\t\tdispatcher.on( 'addAttribute:' + this._from.key, setAttribute( attributeCreator ), options );\n\t\t\tdispatcher.on( 'changeAttribute:' + this._from.key, setAttribute( attributeCreator ), options );\n\t\t\tdispatcher.on( 'removeAttribute:' + this._from.key, removeAttribute( attributeCreator ), options );\n\t\t}\n\t}\n}\n\n/**\n * Entry point for model-to-view converters builder. This chainable API makes it easy to create basic, most common\n * model-to-view converters and attach them to provided dispatchers. The method returns an instance of\n * {@link module:engine/conversion/buildmodelconverter~ModelConverterBuilder}.\n */\nexport default function buildModelConverter() {\n\treturn new ModelConverterBuilder();\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/conversion/buildmodelconverter.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/conversion/buildviewconverter\n */\n\nimport Matcher from '../view/matcher';\nimport ModelElement from '../model/element';\nimport ModelPosition from '../model/position';\nimport modelWriter from '../model/writer';\nimport isIterable from '@ckeditor/ckeditor5-utils/src/isiterable';\n\n/**\n * Provides chainable, high-level API to easily build basic view-to-model converters that are appended to given\n * dispatchers. View-to-model converters are used when external data is added to the editor, i.e. when a user pastes\n * HTML content to the editor. Then, converters are used to translate this structure, possibly removing unknown/incorrect\n * nodes, and add it to the model. Also multiple, different elements might be translated into the same thing in the\n * model, i.e. `<b>` and `<strong>` elements might be converted to `bold` attribute (even though `bold` attribute will\n * be then converted only to `<strong>` tag). Instances of this class are created by\n * {@link module:engine/conversion/buildviewconverter~buildViewConverter}.\n *\n * If you need more complex converters, see {@link module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher},\n * {@link module:engine/conversion/view-to-model-converters}, {@link module:engine/conversion/viewconsumable~ViewConsumable}.\n *\n * Using this API it is possible to create various kind of converters:\n *\n * 1. View element to model element:\n *\n *\t\tbuildViewConverter().for( dispatcher ).fromElement( 'p' ).toElement( 'paragraph' );\n *\n * 2. View element to model attribute:\n *\n *\t\tbuildViewConverter().for( dispatcher ).fromElement( 'b' ).fromElement( 'strong' ).toAttribute( 'bold', 'true' );\n *\n * 3. View attribute to model attribute:\n *\n *\t\tbuildViewConverter().for( dispatcher ).fromAttribute( 'style', { 'font-weight': 'bold' } ).toAttribute( 'bold', 'true' );\n *\t\tbuildViewConverter().for( dispatcher )\n *\t\t\t.fromAttribute( 'class' )\n *\t\t\t.toAttribute( ( viewElement ) => ( { class: viewElement.getAttribute( 'class' ) } ) );\n *\n * 4. View elements and attributes to model attribute:\n *\n *\t\tbuildViewConverter().for( dispatcher )\n *\t\t\t.fromElement( 'b' ).fromElement( 'strong' ).fromAttribute( 'style', { 'font-weight': 'bold' } )\n *\t\t\t.toAttribute( 'bold', 'true' );\n *\n * 5. View {@link module:engine/view/matcher~Matcher view element matcher instance} or\n * {@link module:engine/view/matcher~Matcher#add matcher pattern}\n * to model element or attribute:\n *\n *\t\tconst matcher = new ViewMatcher();\n *\t\tmatcher.add( 'div', { class: 'quote' } );\n *\t\tbuildViewConverter().for( dispatcher ).from( matcher ).toElement( 'quote' );\n *\n *\t\tbuildViewConverter().for( dispatcher ).from( { name: 'span', class: 'bold' } ).toAttribute( 'bold', 'true' );\n *\n * Note, that converters built using `ViewConverterBuilder` automatically check {@link module:engine/model/schema~Schema schema}\n * if created model structure is valid. If given conversion would be invalid according to schema, it is ignored.\n *\n * It is possible to provide creator functions as parameters for {@link ~ViewConverterBuilder#toElement}\n * and {@link module:engine/conversion/buildviewconverter~ViewConverterBuilder#toAttribute} methods. See their descriptions to learn more.\n *\n * By default, converter will {@link module:engine/conversion/viewconsumable~ViewConsumable#consume consume} every value specified in\n * given `from...` query, i.e. `.from( { name: 'span', class: 'bold' } )` will make converter consume both `span` name\n * and `bold` class. It is possible to change this behavior using {@link ~ViewConverterBuilder#consuming consuming}\n * modifier. The modifier alters the last `fromXXX` query used before it. To learn more about consuming values,\n * see {@link module:engine/conversion/viewconsumable~ViewConsumable}.\n *\n * It is also possible to {@link module:engine/conversion/buildviewconverter~ViewConverterBuilder#withPriority change default priority}\n * of created converters to decide which converter should be fired earlier and which later. This is useful if you provide\n * a general converter but want to provide different converter for a specific-case (i.e. given view element is converted\n * always to given model element, but if it has given class it is converter to other model element). For this,\n * use {@link module:engine/conversion/buildviewconverter~ViewConverterBuilder#withPriority withPriority} modifier. The modifier alters\n * the last `from...` query used before it.\n *\n * Note that `to...` methods are \"terminators\", which means that should be the last one used in building converter.\n *\n * You can use {@link module:engine/conversion/buildmodelconverter~ModelConverterBuilder}\n * to create \"opposite\" converters - from model to view.\n */\nclass ViewConverterBuilder {\n\t/**\n\t * Creates `ViewConverterBuilder` with given `dispatchers` registered to it.\n\t */\n\tconstructor() {\n\t\t/**\n\t\t * Dispatchers to which converters will be attached.\n\t\t *\n\t\t * @type {Array.<module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher>}\n\t\t * @private\n\t\t */\n\t\tthis._dispatchers = [];\n\n\t\t/**\n\t\t * Stores \"from\" queries.\n\t\t *\n\t\t * @type {Array}\n\t\t * @private\n\t\t */\n\t\tthis._from = [];\n\t}\n\n\t/**\n\t * Set one or more dispatchers which the built converter will be attached to.\n\t *\n\t * @chainable\n\t * @param {...module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher} dispatchers One or more dispatchers.\n\t * @returns {module:engine/conversion/buildviewconverter~ViewConverterBuilder}\n\t */\n\tfor( ...dispatchers ) {\n\t\tthis._dispatchers = dispatchers;\n\n\t\treturn this;\n\t}\n\n\t/**\n\t * Registers what view element should be converted.\n\t *\n\t *\t\tbuildViewConverter().for( dispatcher ).fromElement( 'p' ).toElement( 'paragraph' );\n\t *\n\t * @chainable\n\t * @param {String} elementName View element name.\n\t * @returns {module:engine/conversion/buildviewconverter~ViewConverterBuilder}\n\t */\n\tfromElement( elementName ) {\n\t\treturn this.from( { name: elementName } );\n\t}\n\n\t/**\n\t * Registers what view attribute should be converted.\n\t *\n\t *\t\tbuildViewConverter().for( dispatcher ).fromAttribute( 'style', { 'font-weight': 'bold' } ).toAttribute( 'bold', 'true' );\n\t *\n\t * @chainable\n\t * @param {String|RegExp} key View attribute key.\n\t * @param {String|RegExp} [value] View attribute value.\n\t * @returns {module:engine/conversion/buildviewconverter~ViewConverterBuilder}\n\t */\n\tfromAttribute( key, value = /.*/ ) {\n\t\tlet pattern = {};\n\t\tpattern[ key ] = value;\n\n\t\treturn this.from( pattern );\n\t}\n\n\t/**\n\t * Registers what view pattern should be converted. The method accepts either {@link module:engine/view/matcher~Matcher view matcher}\n\t * or view matcher pattern.\n\t *\n\t *\t\tconst matcher = new ViewMatcher();\n\t *\t\tmatcher.add( 'div', { class: 'quote' } );\n\t *\t\tbuildViewConverter().for( dispatcher ).from( matcher ).toElement( 'quote' );\n\t *\n\t *\t\tbuildViewConverter().for( dispatcher ).from( { name: 'span', class: 'bold' } ).toAttribute( 'bold', 'true' );\n\t *\n\t * @chainable\n\t * @param {Object|module:engine/view/matcher~Matcher} matcher View matcher or view matcher pattern.\n\t * @returns {module:engine/conversion/buildviewconverter~ViewConverterBuilder}\n\t */\n\tfrom( matcher ) {\n\t\tif ( !( matcher instanceof Matcher ) ) {\n\t\t\tmatcher = new Matcher( matcher );\n\t\t}\n\n\t\tthis._from.push( {\n\t\t\tmatcher: matcher,\n\t\t\tconsume: false,\n\t\t\tpriority: null\n\t\t} );\n\n\t\treturn this;\n\t}\n\n\t/**\n\t * Modifies which consumable values will be {@link module:engine/conversion/viewconsumable~ViewConsumable#consume consumed}\n\t * by built converter.\n\t * It modifies the last `from...` query. Can be used after each `from...` query in given chain. Useful for providing\n\t * more specific matches.\n\t *\n\t *\t\t// This converter will only handle class bold conversion (to proper attribute) but span element\n\t *\t\t// conversion will have to be done in separate converter.\n\t *\t\t// Without consuming modifier, the converter would consume both class and name, so a converter for\n\t *\t\t// span element would not be fired.\n\t *\t\tbuildViewConverter().for( dispatcher )\n\t *\t\t\t.from( { name: 'span', class: 'bold' } ).consuming( { class: 'bold' } )\n\t *\t\t\t.toAttribute( 'bold', 'true' } );\n\t *\n\t *\t\tbuildViewConverter().for( dispatcher )\n\t *\t\t\t.fromElement( 'img' ).consuming( { name: true, attributes: [ 'src', 'title' ] } )\n\t *\t\t\t.toElement( ( viewElement ) => new ModelElement( 'image', { src: viewElement.getAttribute( 'src' ),\n\t *\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\ttitle: viewElement.getAttribute( 'title' ) } );\n\t *\n\t * **Note:** All and only values from passed object has to be consumable on converted view element. This means that\n\t * using `consuming` method, you can either make looser conversion conditions (like in first example) or tighter\n\t * conversion conditions (like in second example). So, the view element, to be converter, has to match query of\n\t * `from...` method and then have to have enough consumable values to consume.\n\t *\n\t * @see module:engine/conversion/viewconsumable~ViewConsumable\n\t * @chainable\n\t * @param {Object} consume Values to consume.\n\t * @returns {module:engine/conversion/buildviewconverter~ViewConverterBuilder}\n\t */\n\tconsuming( consume ) {\n\t\tlet lastFrom = this._from[ this._from.length - 1 ];\n\t\tlastFrom.consume = consume;\n\n\t\treturn this;\n\t}\n\n\t/**\n\t * Changes default priority for built converter. It modifies the last `from...` query. Can be used after each\n\t * `from...` query in given chain. Useful for overwriting converters. The lower the number, the earlier converter will be fired.\n\t *\n\t *\t\tbuildViewConverter().for( dispatcher ).fromElement( 'p' ).toElement( 'paragraph' );\n\t *\t\t// Register converter with proper priority, otherwise \"p\" element would get consumed by first\n\t *\t\t// converter and the second converter would not be fired.\n\t *\t\tbuildViewConverter().for( dispatcher )\n\t *\t\t\t.from( { name: 'p', class: 'custom' } ).withPriority( 9 )\n\t *\t\t\t.toElement( 'customParagraph' );\n\t *\n\t * **Note:** `ViewConverterBuilder` takes care so all `toElement` conversions takes place before all `toAttribute`\n\t * conversions. This is done by setting default `toElement` priority to `10` and `toAttribute` priority to `1000`.\n\t * It is recommended to set converter priority for `toElement` conversions below `500` and `toAttribute` priority\n\t * above `500`. It is important that model elements are created before attributes, otherwise attributes would\n\t * not be applied or other errors may occur.\n\t *\n\t * @chainable\n\t * @param {Number} priority Converter priority.\n\t * @returns {module:engine/conversion/buildviewconverter~ViewConverterBuilder}\n\t */\n\twithPriority( priority ) {\n\t\tlet lastFrom = this._from[ this._from.length - 1 ];\n\t\tlastFrom.priority = priority;\n\n\t\treturn this;\n\t}\n\n\t/**\n\t * Registers what model element will be created by converter.\n\t *\n\t * Method accepts two ways of providing what kind of model element will be created. You can pass model element\n\t * name as a `string` or a function that will return model element instance. If you provide creator function,\n\t * it will be passed converted view element as first and only parameter.\n\t *\n\t *\t\tbuildViewConverter().for( dispatcher ).fromElement( 'p' ).toElement( 'paragraph' );\n\t *\t\tbuildViewConverter().for( dispatcher )\n\t *\t\t\t.fromElement( 'img' )\n\t *\t\t\t.toElement( ( viewElement ) => new ModelElement( 'image', { src: viewElement.getAttribute( 'src' ) } );\n\t *\n\t * @param {String|Function} element Model element name or model element creator function.\n\t */\n\ttoElement( element ) {\n\t\tconst eventCallbackGen = function( from ) {\n\t\t\treturn ( evt, data, consumable, conversionApi ) => {\n\t\t\t\t// There is one callback for all patterns in the matcher.\n\t\t\t\t// This will be usually just one pattern but we support matchers with many patterns too.\n\t\t\t\tlet matchAll = from.matcher.matchAll( data.input );\n\n\t\t\t\t// If there is no match, this callback should not do anything.\n\t\t\t\tif ( !matchAll ) {\n\t\t\t\t\treturn;\n\t\t\t\t}\n\n\t\t\t\t// Now, for every match between matcher and actual element, we will try to consume the match.\n\t\t\t\tfor ( let match of matchAll ) {\n\t\t\t\t\t// Create model element basing on creator function or element name.\n\t\t\t\t\tconst modelElement = element instanceof Function ? element( data.input ) : new ModelElement( element );\n\n\t\t\t\t\t// Check whether generated structure is okay with `Schema`.\n\t\t\t\t\tconst keys = Array.from( modelElement.getAttributeKeys() );\n\n\t\t\t\t\tif ( !conversionApi.schema.check( { name: modelElement.name, attributes: keys, inside: data.context } ) ) {\n\t\t\t\t\t\tcontinue;\n\t\t\t\t\t}\n\n\t\t\t\t\t// Try to consume appropriate values from consumable values list.\n\t\t\t\t\tif ( !consumable.consume( data.input, from.consume || match.match ) ) {\n\t\t\t\t\t\tcontinue;\n\t\t\t\t\t}\n\n\t\t\t\t\t// If everything is fine, we are ready to start the conversion.\n\t\t\t\t\t// Add newly created `modelElement` to the parents stack.\n\t\t\t\t\tdata.context.push( modelElement );\n\n\t\t\t\t\t// Convert children of converted view element and append them to `modelElement`.\n\t\t\t\t\tconst modelChildren = conversionApi.convertChildren( data.input, consumable, data );\n\t\t\t\t\tconst insertPosition = ModelPosition.createAt( modelElement, 'end' );\n\t\t\t\t\tmodelWriter.insert( insertPosition, modelChildren );\n\n\t\t\t\t\t// Remove created `modelElement` from the parents stack.\n\t\t\t\t\tdata.context.pop();\n\n\t\t\t\t\t// Add `modelElement` as a result.\n\t\t\t\t\tdata.output = modelElement;\n\n\t\t\t\t\t// Prevent multiple conversion if there are other correct matches.\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t};\n\t\t};\n\n\t\tthis._setCallback( eventCallbackGen, 'normal' );\n\t}\n\n\t/**\n\t * Registers what model attribute will be created by converter.\n\t *\n\t * Method accepts two ways of providing what kind of model attribute will be created. You can either pass two strings\n\t * representing attribute key and attribute value or a function that returns an object with `key` and `value` properties.\n\t * If you provide creator function, it will be passed converted view element as first and only parameter.\n\t *\n\t *\t\tbuildViewConverter().for( dispatcher ).fromAttribute( 'style', { 'font-weight': 'bold' } ).toAttribute( 'bold', 'true' );\n\t *\t\tbuildViewConverter().for( dispatcher )\n\t *\t\t\t.fromAttribute( 'class' )\n\t *\t\t\t.toAttribute( ( viewElement ) => ( { key: 'class', value: viewElement.getAttribute( 'class' ) } ) );\n\t *\n\t * @param {String|Function} keyOrCreator Attribute key or a creator function.\n\t * @param {String} [value] Attribute value. Required if `keyOrCreator` is a `string`. Ignored otherwise.\n\t */\n\ttoAttribute( keyOrCreator, value ) {\n\t\tconst eventCallbackGen = function( from ) {\n\t\t\treturn ( evt, data, consumable, conversionApi ) => {\n\t\t\t\t// There is one callback for all patterns in the matcher.\n\t\t\t\t// This will be usually just one pattern but we support matchers with many patterns too.\n\t\t\t\tlet matchAll = from.matcher.matchAll( data.input );\n\n\t\t\t\t// If there is no match, this callback should not do anything.\n\t\t\t\tif ( !matchAll ) {\n\t\t\t\t\treturn;\n\t\t\t\t}\n\n\t\t\t\t// Now, for every match between matcher and actual element, we will try to consume the match.\n\t\t\t\tfor ( let match of matchAll ) {\n\t\t\t\t\t// Try to consume appropriate values from consumable values list.\n\t\t\t\t\tif ( !consumable.consume( data.input, from.consume || match.match ) ) {\n\t\t\t\t\t\tcontinue;\n\t\t\t\t\t}\n\n\t\t\t\t\t// Since we are converting to attribute we need an output on which we will set the attribute.\n\t\t\t\t\t// If the output is not created yet, we will create it.\n\t\t\t\t\tif ( !data.output ) {\n\t\t\t\t\t\tdata.output = conversionApi.convertChildren( data.input, consumable, data );\n\t\t\t\t\t}\n\n\t\t\t\t\t// Use attribute creator function, if provided.\n\t\t\t\t\tlet attribute = keyOrCreator instanceof Function ? keyOrCreator( data.input ) : { key: keyOrCreator, value: value };\n\n\t\t\t\t\t// Set attribute on current `output`. `Schema` is checked inside this helper function.\n\t\t\t\t\tsetAttributeOn( data.output, attribute, data, conversionApi );\n\n\t\t\t\t\t// Prevent multiple conversion if there are other correct matches.\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t};\n\t\t};\n\n\t\tthis._setCallback( eventCallbackGen, 'low' );\n\t}\n\n\t/**\n\t * Helper function that uses given callback generator to created callback function and sets it on registered dispatchers.\n\t *\n\t * @param eventCallbackGen\n\t * @param defaultPriority\n\t * @private\n\t */\n\t_setCallback( eventCallbackGen, defaultPriority ) {\n\t\t// We will add separate event callback for each registered `from` entry.\n\t\tfor ( let from of this._from ) {\n\t\t\t// We have to figure out event name basing on matcher's patterns.\n\t\t\t// If there is exactly one pattern and it has `name` property we will used that name.\n\t\t\tconst matcherElementName = from.matcher.getElementName();\n\t\t\tconst eventName = matcherElementName ? 'element:' + matcherElementName : 'element';\n\t\t\tconst eventCallback = eventCallbackGen( from );\n\n\t\t\tconst priority = from.priority === null ? defaultPriority : from.priority;\n\n\t\t\t// Add event to each registered dispatcher.\n\t\t\tfor ( let dispatcher of this._dispatchers ) {\n\t\t\t\tdispatcher.on( eventName, eventCallback, { priority } );\n\t\t\t}\n\t\t}\n\t}\n}\n\n// Helper function that sets given attributes on given `module:engine/model/node~Node` or\n// `module:engine/model/documentfragment~DocumentFragment`.\nfunction setAttributeOn( toChange, attribute, data, conversionApi ) {\n\tif ( isIterable( toChange ) ) {\n\t\tfor ( let node of toChange ) {\n\t\t\tsetAttributeOn( node, attribute, data, conversionApi );\n\t\t}\n\n\t\treturn;\n\t}\n\n\tconst keys = Array.from( toChange.getAttributeKeys() );\n\tkeys.push( attribute.key );\n\n\tconst schemaQuery = {\n\t\tname: toChange.name || '$text',\n\t\tattributes: keys,\n\t\tinside: data.context\n\t};\n\n\tif ( conversionApi.schema.check( schemaQuery ) ) {\n\t\ttoChange.setAttribute( attribute.key, attribute.value );\n\t}\n}\n\n/**\n * Entry point for view-to-model converters builder. This chainable API makes it easy to create basic, most common\n * view-to-model converters and attach them to provided dispatchers. The method returns an instance of\n * {@link module:engine/conversion/buildviewconverter~ViewConverterBuilder}.\n */\nexport default function buildViewConverter() {\n\treturn new ViewConverterBuilder();\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/conversion/buildviewconverter.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/observer/observer\n */\n\nimport DomEmitterMixin from '@ckeditor/ckeditor5-utils/src/dom/emittermixin';\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\n\n/**\n * Abstract base observer class. Observers are classes which observe changes on DOM elements, do the preliminary\n * processing and fire events on the {@link module:engine/view/document~Document} objects. Observers can also add features to the view,\n * for instance by updating its status or marking elements which need refresh on DOM events.\n *\n * @abstract\n */\nexport default class Observer {\n\t/**\n\t * Creates an instance of the observer.\n\t *\n\t * @param {module:engine/view/document~Document} document\n\t */\n\tconstructor( document ) {\n\t\t/**\n\t\t * Reference to the {@link module:engine/view/document~Document} object.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/view/document~Document}\n\t\t */\n\t\tthis.document = document;\n\n\t\t/**\n\t\t * State of the observer. If it is disabled events will not be fired.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Boolean}\n\t\t */\n\t\tthis.isEnabled = false;\n\t}\n\n\t/**\n\t * Enables the observer. This method is called when then observer is registered to the\n\t * {@link module:engine/view/document~Document} and after {@link module:engine/view/document~Document#render rendering}\n\t * (all observers are {@link #disable disabled} before rendering).\n\t *\n\t * A typical use case for disabling observers is that mutation observers need to be disabled for the rendering.\n\t * However, a child class may not need to be disabled, so it can implement an empty method.\n\t *\n\t * @see module:engine/view/observer/observer~Observer#disable\n\t */\n\tenable() {\n\t\tthis.isEnabled = true;\n\t}\n\n\t/**\n\t * Disables the observer. This method is called before\n\t * {@link module:engine/view/document~Document#render rendering} to prevent firing events during rendering.\n\t *\n\t * @see module:engine/view/observer/observer~Observer#enable\n\t */\n\tdisable() {\n\t\tthis.isEnabled = false;\n\t}\n\n\t/**\n\t * Disables and destroys the observer, among others removes event listeners created by the observer.\n\t */\n\tdestroy() {\n\t\tthis.disable();\n\t\tthis.stopListening();\n\t}\n\n\t/**\n\t * Starts observing the given root element.\n\t *\n\t * @method #observe\n\t * @param {HTMLElement} domElement\n\t * @param {String} name The name of the root element.\n\t */\n}\n\nmix( Observer, DomEmitterMixin );\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/view/observer/observer.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/comparearrays\n */\n\n/**\n * Compares how given arrays relate to each other. One array can be: same as another array, prefix of another array\n * or completely different. If arrays are different, first index at which they differ is returned. Otherwise,\n * a flag specifying the relation is returned. Flags are negative numbers, so whenever a number >= 0 is returned\n * it means that arrays differ.\n *\n *\t\tcompareArrays( [ 0, 2 ], [ 0, 2 ] );\t\t// 'same'\n *\t\tcompareArrays( [ 0, 2 ], [ 0, 2, 1 ] );\t\t// 'prefix'\n *\t\tcompareArrays( [ 0, 2 ], [ 0 ] );\t\t\t// 'extension'\n *\t\tcompareArrays( [ 0, 2 ], [ 1, 2 ] );\t\t// 0\n *\t\tcompareArrays( [ 0, 2 ], [ 0, 1 ] );\t\t// 1\n *\n * @param {Array} a Array that is compared.\n * @param {Array} b Array to compare with.\n * @returns {module:utils/comparearrays~ArrayRelation} How array `a` is related to `b`.\n */\nexport default function compareArrays( a, b ) {\n\tconst minLen = Math.min( a.length, b.length );\n\n\tfor ( let i = 0; i < minLen; i++ ) {\n\t\tif ( a[ i ] != b[ i ] ) {\n\t\t\t// The arrays are different.\n\t\t\treturn i;\n\t\t}\n\t}\n\n\t// Both arrays were same at all points.\n\tif ( a.length == b.length ) {\n\t\t// If their length is also same, they are the same.\n\t\treturn 'same';\n\t} else if ( a.length < b.length ) {\n\t\t// Compared array is shorter so it is a prefix of the other array.\n\t\treturn 'prefix';\n\t} else {\n\t\t// Compared array is longer so it is an extension of the other array.\n\t\treturn 'extension';\n\t}\n}\n\n/**\n * @typedef {'extension'|'same'|'prefix'} module:utils/comparearrays~ArrayRelation\n */\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/comparearrays.js","import isNative from './isNative';\n\n/**\n * Gets the native function at `key` of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {string} key The key of the method to get.\n * @returns {*} Returns the function if it's native, else `undefined`.\n */\nfunction getNative(object, key) {\n  var value = object[key];\n  return isNative(value) ? value : undefined;\n}\n\nexport default getNative;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_getNative.js","import isArray from './isArray';\nimport isSymbol from './isSymbol';\n\n/** Used to match property names within property paths. */\nvar reIsDeepProp = /\\.|\\[(?:[^[\\]]*|([\"'])(?:(?!\\1)[^\\\\]|\\\\.)*?\\1)\\]/,\n    reIsPlainProp = /^\\w*$/;\n\n/**\n * Checks if `value` is a property name and not a property path.\n *\n * @private\n * @param {*} value The value to check.\n * @param {Object} [object] The object to query keys on.\n * @returns {boolean} Returns `true` if `value` is a property name, else `false`.\n */\nfunction isKey(value, object) {\n  if (isArray(value)) {\n    return false;\n  }\n  var type = typeof value;\n  if (type == 'number' || type == 'symbol' || type == 'boolean' ||\n      value == null || isSymbol(value)) {\n    return true;\n  }\n  return reIsPlainProp.test(value) || !reIsDeepProp.test(value) ||\n    (object != null && value in Object(object));\n}\n\nexport default isKey;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_isKey.js","import isSymbol from './isSymbol';\n\n/** Used as references for various `Number` constants. */\nvar INFINITY = 1 / 0;\n\n/**\n * Converts `value` to a string key if it's not a string or symbol.\n *\n * @private\n * @param {*} value The value to inspect.\n * @returns {string|symbol} Returns the key.\n */\nfunction toKey(value) {\n  if (typeof value == 'string' || isSymbol(value)) {\n    return value;\n  }\n  var result = (value + '');\n  return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;\n}\n\nexport default toKey;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_toKey.js","/**\n * Performs a\n * [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)\n * comparison between two values to determine if they are equivalent.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n * @example\n *\n * var object = { 'user': 'fred' };\n * var other = { 'user': 'fred' };\n *\n * _.eq(object, object);\n * // => true\n *\n * _.eq(object, other);\n * // => false\n *\n * _.eq('a', 'a');\n * // => true\n *\n * _.eq('a', Object('a'));\n * // => false\n *\n * _.eq(NaN, NaN);\n * // => true\n */\nfunction eq(value, other) {\n  return value === other || (value !== value && other !== other);\n}\n\nexport default eq;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/eq.js","export { default } from './assignIn'\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/extend.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/* global console */\n\n/**\n * @module utils/log\n */\n\n/**\n * The logging module.\n *\n * This object features two functions that should be used across CKEditor code base to log errors and warnings.\n * Despite being an overridable interface for native `console.*` this module serves also the goal to limit the\n * code size of a minified CKEditor package. During minification process the messages will be shortened and\n * links to their documentation will be logged to the console.\n *\n * All errors and warning should be documented in the following way:\n *\n *\t\t/**\n *\t\t * Error thrown when a plugin cannot be loaded due to JavaScript errors, lack of plugins with a given name, etc.\n *\t\t *\n *\t\t * @error plugin-load\n *\t\t * @param pluginName The name of the plugin that could not be loaded.\n *\t\t * @param moduleName The name of the module which tried to load this plugin.\n *\t\t * /\n *\t\tlog.error( 'plugin-load: It was not possible to load the \"{$pluginName}\" plugin in module \"{$moduleName}', {\n *\t\t\tpluginName: 'foo',\n *\t\t\tmoduleName: 'bar'\n *\t\t} );\n *\n * ### Warning vs Error vs Throw\n *\n * * Whenever a potentially incorrect situation occurs, which does not directly lead to an incorrect behavior,\n * log a warning.\n * * Whenever an incorrect situation occurs, but the app may continue working (although perhaps incorrectly),\n * log an error.\n * * Whenever it's really bad and it does not make sense to continue working, throw a {@link module:utils/ckeditorerror~CKEditorError}.\n *\n * @namespace\n */\nconst log = {\n\t/**\n\t * Logs an error to the console.\n\t *\n\t * Read more about error logging in the {@link module:utils/log} module.\n\t *\n\t * @param {String} message The error message in an `error-name: Error message.` format.\n\t * During the minification process the \"Error message\" part will be removed to limit the code size\n\t * and a link to this error documentation will be logged to the console.\n\t * @param {Object} [data] Additional data describing the error.\n\t */\n\terror( message, data ) {\n\t\tconsole.error( message, data );\n\t},\n\n\t/**\n\t * Logs a warning to the console.\n\t *\n\t * Read more about error logging in the {@link module:utils/log} module.\n\t *\n\t * @param {String} message The warning message in a `warning-name: Warning message.` format.\n\t * During the minification process the \"Warning message\" part will be removed to limit the code size\n\t * and a link to this error documentation will be logged to the console.\n\t * @param {Object} [data] Additional data describing the warning.\n\t */\n\twarn( message, data ) {\n\t\tconsole.warn( message, data );\n\t}\n};\n\nexport default log;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/log.js","/*\r\n\tMIT License http://www.opensource.org/licenses/mit-license.php\r\n\tAuthor Tobias Koppers @sokra\r\n*/\r\n// css base code, injected by the css-loader\r\nmodule.exports = function() {\r\n\tvar list = [];\r\n\r\n\t// return the list of modules as css string\r\n\tlist.toString = function toString() {\r\n\t\tvar result = [];\r\n\t\tfor(var i = 0; i < this.length; i++) {\r\n\t\t\tvar item = this[i];\r\n\t\t\tif(item[2]) {\r\n\t\t\t\tresult.push(\"@media \" + item[2] + \"{\" + item[1] + \"}\");\r\n\t\t\t} else {\r\n\t\t\t\tresult.push(item[1]);\r\n\t\t\t}\r\n\t\t}\r\n\t\treturn result.join(\"\");\r\n\t};\r\n\r\n\t// import a list of modules into the list\r\n\tlist.i = function(modules, mediaQuery) {\r\n\t\tif(typeof modules === \"string\")\r\n\t\t\tmodules = [[null, modules, \"\"]];\r\n\t\tvar alreadyImportedModules = {};\r\n\t\tfor(var i = 0; i < this.length; i++) {\r\n\t\t\tvar id = this[i][0];\r\n\t\t\tif(typeof id === \"number\")\r\n\t\t\t\talreadyImportedModules[id] = true;\r\n\t\t}\r\n\t\tfor(i = 0; i < modules.length; i++) {\r\n\t\t\tvar item = modules[i];\r\n\t\t\t// skip already imported module\r\n\t\t\t// this implementation is not 100% perfect for weird media query combinations\r\n\t\t\t//  when a module is imported multiple times with different media queries.\r\n\t\t\t//  I hope this will never occur (Hey this way we have smaller bundles)\r\n\t\t\tif(typeof item[0] !== \"number\" || !alreadyImportedModules[item[0]]) {\r\n\t\t\t\tif(mediaQuery && !item[2]) {\r\n\t\t\t\t\titem[2] = mediaQuery;\r\n\t\t\t\t} else if(mediaQuery) {\r\n\t\t\t\t\titem[2] = \"(\" + item[2] + \") and (\" + mediaQuery + \")\";\r\n\t\t\t\t}\r\n\t\t\t\tlist.push(item);\r\n\t\t\t}\r\n\t\t}\r\n\t};\r\n\treturn list;\r\n};\r\n\n\n\n// WEBPACK FOOTER //\n// ./~/css-loader/lib/css-base.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/textproxy\n */\n\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/**\n * `TextProxy` represents a part of {@link module:engine/model/text~Text text node}.\n *\n * Since {@link module:engine/model/position~Position positions} can be placed between characters of a text node,\n * {@link module:engine/model/range~Range ranges} may contain only parts of text nodes. When {@link module:engine/model/range~Range#getItems\n * getting items}\n * contained in such range, we need to represent a part of that text node, since returning the whole text node would be incorrect.\n * `TextProxy` solves this issue.\n *\n * `TextProxy` has an API similar to {@link module:engine/model/text~Text Text} and allows to do most of the common tasks performed\n * on model nodes.\n *\n * **Note:** Some `TextProxy` instances may represent whole text node, not just a part of it.\n * See {@link module:engine/model/textproxy~TextProxy#isPartial}.\n *\n * **Note:** `TextProxy` is not an instance of {@link module:engine/model/node~Node node}. Keep this in mind when using it as a\n * parameter of methods.\n *\n * **Note:** `TextProxy` is a readonly interface. If you want to perform changes on model data represented by a `TextProxy`\n * use {@link module:engine/model/writer~writer model writer API}.\n *\n * **Note:** `TextProxy` instances are created on the fly, basing on the current state of model. Because of this, it is\n * highly unrecommended to store references to `TextProxy` instances. `TextProxy` instances are not refreshed when\n * model changes, so they might get invalidated. Instead, consider creating {@link module:engine/model/liveposition~LivePosition live\n * position}.\n *\n * `TextProxy` instances are created by {@link module:engine/model/treewalker~TreeWalker model tree walker}. You should not need to create\n * an instance of this class by your own.\n */\nexport default class TextProxy {\n\t/**\n\t * Creates a text proxy.\n\t *\n\t * @protected\n\t * @param {module:engine/model/text~Text} textNode Text node which part is represented by this text proxy.\n\t * @param {Number} offsetInText Offset in {@link module:engine/model/textproxy~TextProxy#textNode text node} from which the text proxy\n\t * starts.\n\t * @param {Number} length Text proxy length, that is how many text node's characters, starting from `offsetInText` it represents.\n\t * @constructor\n\t */\n\tconstructor( textNode, offsetInText, length ) {\n\t\t/**\n\t\t * Text node which part is represented by this text proxy.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/model/text~Text}\n\t\t */\n\t\tthis.textNode = textNode;\n\n\t\tif ( offsetInText < 0 || offsetInText > textNode.offsetSize ) {\n\t\t\t/**\n\t\t\t * Given offsetInText value is incorrect.\n\t\t\t *\n\t\t\t * @error model-textproxy-wrong-offsetintext\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'model-textproxy-wrong-offsetintext: Given offsetInText value is incorrect.' );\n\t\t}\n\n\t\tif ( length < 0 || offsetInText + length > textNode.offsetSize ) {\n\t\t\t/**\n\t\t\t * Given length value is incorrect.\n\t\t\t *\n\t\t\t * @error model-textproxy-wrong-length\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'model-textproxy-wrong-length: Given length value is incorrect.' );\n\t\t}\n\t\t/**\n\t\t * Text data represented by this text proxy.\n\t\t *\n\t\t * @readonly\n\t\t * @member {String}\n\t\t */\n\t\tthis.data = textNode.data.substring( offsetInText, offsetInText + length );\n\n\t\t/**\n\t\t * Offset in {@link module:engine/model/textproxy~TextProxy#textNode text node} from which the text proxy starts.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Number}\n\t\t */\n\t\tthis.offsetInText = offsetInText;\n\t}\n\n\t/**\n\t * Offset at which this text proxy starts in it's parent.\n\t *\n\t * @see module:engine/model/node~Node#startOffset\n\t * @readonly\n\t * @type {Number}\n\t */\n\tget startOffset() {\n\t\treturn this.textNode.startOffset !== null ? this.textNode.startOffset + this.offsetInText : null;\n\t}\n\n\t/**\n\t * Offset size of this text proxy. Equal to the number of characters represented by the text proxy.\n\t *\n\t * @see module:engine/model/node~Node#offsetSize\n\t * @readonly\n\t * @type {Number}\n\t */\n\tget offsetSize() {\n\t\treturn this.data.length;\n\t}\n\n\t/**\n\t * Offset at which this text proxy ends in it's parent.\n\t *\n\t * @see module:engine/model/node~Node#endOffset\n\t * @readonly\n\t * @type {Number}\n\t */\n\tget endOffset() {\n\t\treturn this.startOffset !== null ? this.startOffset + this.offsetSize : null;\n\t}\n\n\t/**\n\t * Flag indicating whether `TextProxy` instance covers only part of the original {@link module:engine/model/text~Text text node}\n\t * (`true`) or the whole text node (`false`).\n\t *\n\t * This is `false` when text proxy starts at the very beginning of {@link module:engine/model/textproxy~TextProxy#textNode textNode}\n\t * ({@link module:engine/model/textproxy~TextProxy#offsetInText offsetInText} equals `0`) and text proxy sizes is equal to\n\t * text node size.\n\t *\n\t * @readonly\n\t * @type {Boolean}\n\t */\n\tget isPartial() {\n\t\treturn this.offsetSize !== this.textNode.offsetSize;\n\t}\n\n\t/**\n\t * Parent of this text proxy, which is same as parent of text node represented by this text proxy.\n\t *\n\t * @readonly\n\t * @type {module:engine/model/element~Element|module:engine/model/documentfragment~DocumentFragment|null}\n\t */\n\tget parent() {\n\t\treturn this.textNode.parent;\n\t}\n\n\t/**\n\t * Root of this text proxy, which is same as root of text node represented by this text proxy.\n\t *\n\t * @readonly\n\t * @type {module:engine/model/node~Node|module:engine/model/documentfragment~DocumentFragment}\n\t */\n\tget root() {\n\t\treturn this.textNode.root;\n\t}\n\n\t/**\n\t * {@link module:engine/model/document~Document Document} that owns text node represented by this text proxy or `null` if the text node\n\t * has no parent or is inside a {@link module:engine/model/documentfragment~DocumentFragment DocumentFragment}.\n\t *\n\t * @readonly\n\t * @type {module:engine/model/document~Document|null}\n\t */\n\tget document() {\n\t\treturn this.textNode.document;\n\t}\n\n\t/**\n\t * Checks whether given model tree object is of given type.\n\t *\n\t * Read more in {@link module:engine/model/node~Node#is}.\n\t *\n\t * @param {String} type\n\t * @returns {Boolean}\n\t */\n\tis( type ) {\n\t\treturn type == 'textProxy';\n\t}\n\n\t/**\n\t * Gets path to this text proxy.\n\t *\n\t * @see module:engine/model/node~Node#getPath\n\t * @returns {Array.<Number>}\n\t */\n\tgetPath() {\n\t\tconst path = this.textNode.getPath();\n\n\t\tif ( path.length > 0 ) {\n\t\t\tpath[ path.length - 1 ] += this.offsetInText;\n\t\t}\n\n\t\treturn path;\n\t}\n\n\t/**\n\t * Returns ancestors array of this text proxy.\n\t *\n\t * @param {Object} options Options object.\n\t * @param {Boolean} [options.includeNode=false] When set to `true` this text proxy will be also included in parent's array.\n\t * @param {Boolean} [options.parentFirst=false] When set to `true`, array will be sorted from text proxy parent to root element,\n\t * otherwise root element will be the first item in the array.\n\t * @returns {Array} Array with ancestors.\n\t */\n\tgetAncestors( options = { includeNode: false, parentFirst: false } ) {\n\t\tconst ancestors = [];\n\t\tlet parent = options.includeNode ? this : this.parent;\n\n\t\twhile ( parent ) {\n\t\t\tancestors[ options.parentFirst ? 'push' : 'unshift' ]( parent );\n\t\t\tparent = parent.parent;\n\t\t}\n\n\t\treturn ancestors;\n\t}\n\n\t/**\n\t * Checks if this text proxy has an attribute for given key.\n\t *\n\t * @param {String} key Key of attribute to check.\n\t * @returns {Boolean} `true` if attribute with given key is set on text proxy, `false` otherwise.\n\t */\n\thasAttribute( key ) {\n\t\treturn this.textNode.hasAttribute( key );\n\t}\n\n\t/**\n\t * Gets an attribute value for given key or `undefined` if that attribute is not set on text proxy.\n\t *\n\t * @param {String} key Key of attribute to look for.\n\t * @returns {*} Attribute value or `undefined`.\n\t */\n\tgetAttribute( key ) {\n\t\treturn this.textNode.getAttribute( key );\n\t}\n\n\t/**\n\t * Returns iterator that iterates over this node's attributes. Attributes are returned as arrays containing two\n\t * items. First one is attribute key and second is attribute value.\n\t *\n\t * This format is accepted by native `Map` object and also can be passed in `Node` constructor.\n\t *\n\t * @returns {Iterable.<*>}\n\t */\n\tgetAttributes() {\n\t\treturn this.textNode.getAttributes();\n\t}\n\n\t/**\n\t * Returns iterator that iterates over this node's attribute keys.\n\t *\n\t * @returns {Iterator.<String>}\n\t */\n\tgetAttributeKeys() {\n\t\treturn this.textNode.getAttributeKeys();\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/textproxy.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/* globals window, Range, Text */\n\nimport { keyCodes } from '@ckeditor/ckeditor5-utils/src/keyboard';\n\n/**\n * Set of utils related to block and inline fillers handling.\n *\n * Browsers do not allow to put caret in elements which does not have height. Because of it, we need to fill all\n * empty elements which should be selectable with elements or characters called \"fillers\". Unfortunately there is no one\n * universal filler, this is why two types are uses:\n *\n * * Block filler is an element which fill block elements, like `<p>`. CKEditor uses `<br>` as a block filler during the editing,\n * as browsers do natively. So instead of an empty `<p>` there will be `<p><br></p>`. The advantage of block filler is that\n * it is transparent for the selection, so when the caret is before the `<br>` and user presses right arrow he will be\n * moved to the next paragraph, not after the `<br>`. The disadvantage is that it breaks a block, so it can not be used\n * in the middle of a line of text. The {@link module:engine/view/filler~BR_FILLER `<br>` filler} can be replaced with any other\n * character in the data output, for instance {@link module:engine/view/filler~NBSP_FILLER non-breaking space}.\n *\n * * Inline filler is a filler which does not break a line of text, so it can be used inside the text, for instance in the empty\n * `<b>` surrendered by text: `foo<b></b>bar`, if we want to put the caret there. CKEditor uses a sequence of the zero-width\n * spaces as an {@link module:engine/view/filler~INLINE_FILLER inline filler} having the predetermined\n * {@link module:engine/view/filler~INLINE_FILLER_LENGTH length}. A sequence is used, instead of a single character to\n * avoid treating random zero-width spaces as the inline filler. Disadvantage of the inline filler is that it is not\n * transparent for the selection. The arrow key moves the caret between zero-width spaces characters, so the additional\n * code is needed to handle the caret.\n *\n * Both inline and block fillers are handled by the {@link module:engine/view/renderer~Renderer renderer} and are not present in the\n * view.\n *\n * @module engine/view/filler\n */\n\n/**\n * `<br> filler creator. This is a function which creates `<br data-cke-filler=\"true\">` element.\n * It defines how the filler is created.\n *\n * @see module:engine/view/filler~NBSP_FILLER\n * @function\n */\nexport const BR_FILLER = ( domDocument ) => {\n\tconst fillerBr = domDocument.createElement( 'br' );\n\tfillerBr.dataset.ckeFiller = true;\n\n\treturn fillerBr;\n};\n\n/**\n * Non-breaking space filler creator. This is a function which creates `&nbsp;` text node.\n * It defines how the filler is created.\n *\n * @see module:engine/view/filler~BR_FILLER\n * @function\n */\nexport const NBSP_FILLER = ( domDocument ) => domDocument.createTextNode( '\\u00A0' );\n\n/**\n * Length of the {@link module:engine/view/filler~INLINE_FILLER INLINE_FILLER}.\n */\nexport const INLINE_FILLER_LENGTH = 7;\n\n/**\n * Inline filler which is sequence of the zero width spaces.\n */\nexport let INLINE_FILLER = '';\n\nfor ( let i = 0; i < INLINE_FILLER_LENGTH; i++ ) {\n\tINLINE_FILLER += '\\u200b';\n}\n\n/**\n * Checks if the node is a text node which starts with the {@link module:engine/view/filler~INLINE_FILLER inline filler}.\n *\n *\t\tstartsWithFiller( document.createTextNode( INLINE_FILLER ) ); // true\n *\t\tstartsWithFiller( document.createTextNode( INLINE_FILLER + 'foo' ) ); // true\n *\t\tstartsWithFiller( document.createTextNode( 'foo' ) ); // false\n *\t\tstartsWithFiller( document.createElement( 'p' ) ); // false\n *\n * @param {Node} domNode DOM node.\n * @returns {Boolean} True if the text node starts with the {@link module:engine/view/filler~INLINE_FILLER inline filler}.\n */\nexport function startsWithFiller( domNode ) {\n\treturn ( domNode instanceof Text ) && ( domNode.data.substr( 0, INLINE_FILLER_LENGTH ) === INLINE_FILLER );\n}\n\n/**\n * Checks if the text node contains only the {@link module:engine/view/filler~INLINE_FILLER inline filler}.\n *\n *\t\tisInlineFiller( document.createTextNode( INLINE_FILLER ) ); // true\n *\t\tisInlineFiller( document.createTextNode( INLINE_FILLER + 'foo' ) ); // false\n *\n * @param {Text} domText DOM text node.\n * @returns {Boolean} True if the text node contains only the {@link module:engine/view/filler~INLINE_FILLER inline filler}.\n */\nexport function isInlineFiller( domText ) {\n\treturn domText.data.length == INLINE_FILLER_LENGTH && startsWithFiller( domText );\n}\n\n/**\n * Get string data from the text node, removing an {@link module:engine/view/filler~INLINE_FILLER inline filler} from it,\n * if text node contains it.\n *\n *\t\tgetDataWithoutFiller( document.createTextNode( INLINE_FILLER + 'foo' ) ) == 'foo' // true\n *\t\tgetDataWithoutFiller( document.createTextNode( 'foo' ) ) == 'foo' // true\n *\n * @param {Text} domText DOM text node, possible with inline filler.\n * @returns {String} Data without filler.\n */\nexport function getDataWithoutFiller( domText ) {\n\tif ( startsWithFiller( domText ) ) {\n\t\treturn domText.data.slice( INLINE_FILLER_LENGTH );\n\t} else {\n\t\treturn domText.data;\n\t}\n}\n\n// Cache block fillers templates to improve performance.\nconst templateBlockFillers = new WeakMap();\n\n/**\n * Checks if the node is an instance of the block filler of the given type.\n *\n *\t\tconst brFillerInstance = BR_FILLER( document );\n *\t\tisBlockFiller( brFillerInstance, BR_FILLER ); // true\n *\n * @param {Node} domNode DOM node to check.\n * @param {Function} blockFiller Block filler creator.\n * @returns {Boolean} True if text node contains only {@link module:engine/view/filler~INLINE_FILLER inline filler}.\n */\nexport function isBlockFiller( domNode, blockFiller ) {\n\tlet templateBlockFiller = templateBlockFillers.get( blockFiller );\n\n\tif ( !templateBlockFiller ) {\n\t\ttemplateBlockFiller = blockFiller( window.document );\n\t\ttemplateBlockFillers.set( blockFiller, templateBlockFiller );\n\t}\n\n\treturn domNode.isEqualNode( templateBlockFiller );\n}\n\n/**\n * Assign key observer which move cursor from the end of the inline filler to the begging of it when\n * the left arrow is pressed, so the filler does not break navigation.\n *\n * @param {module:engine/view/document~Document} document Document instance we should inject quirks handling on.\n */\nexport function injectQuirksHandling( document ) {\n\tdocument.on( 'keydown', jumpOverInlineFiller );\n}\n\n// Move cursor from the end of the inline filler to the begging of it when, so the filler does not break navigation.\nfunction jumpOverInlineFiller( evt, data ) {\n\tif ( data.keyCode == keyCodes.arrowleft ) {\n\t\tconst domSelection = data.domTarget.ownerDocument.defaultView.getSelection();\n\n\t\tif ( domSelection.rangeCount == 1 && domSelection.getRangeAt( 0 ).collapsed ) {\n\t\t\tconst domParent = domSelection.getRangeAt( 0 ).startContainer;\n\t\t\tconst domOffset = domSelection.getRangeAt( 0 ).startOffset;\n\n\t\t\tif ( startsWithFiller( domParent ) && domOffset <= INLINE_FILLER_LENGTH ) {\n\t\t\t\tconst domRange = new Range();\n\t\t\t\tdomRange.setStart( domParent, 0 );\n\t\t\t\tdomRange.collapse( true );\n\t\t\t\tdomSelection.removeAllRanges();\n\t\t\t\tdomSelection.addRange( domRange );\n\t\t\t}\n\t\t}\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/view/filler.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/observer/domeventobserver\n */\n\nimport Observer from './observer';\nimport DomEventData from './domeventdata';\n\n/**\n * Base class for DOM event observers. This class handles\n * {@link module:engine/view/observer/observer~Observer#observe adding} listeners to DOM elements,\n * {@link module:engine/view/observer/observer~Observer#disable disabling} and\n * {@link module:engine/view/observer/observer~Observer#enable re-enabling} events.\n * Child class needs to define\n * {@link module:engine/view/observer/domeventobserver~DomEventObserver#domEventType DOM event type} and\n * {@link module:engine/view/observer/domeventobserver~DomEventObserver#onDomEvent callback}.\n *\n * For instance:\n *\n *\t\tclass ClickObserver extends DomEventObserver {\n *\t\t\t// It can also be defined as a normal property in the constructor.\n *\t\t\tget domEventType() {\n *\t\t\t\treturn 'click';\n *\t\t\t}\n *\n *\t\t\tonDomEvent( domEvent ) {\n *\t\t\t\tthis.fire( 'click', domEvent );\n *\t\t\t}\n *\t\t}\n *\n * @extends module:engine/view/observer/observer~Observer\n */\nexport default class DomEventObserver extends Observer {\n\t/**\n\t * Type of the DOM event the observer should listen on. Array of types can be defined\n\t * if the obsever should listen to multiple DOM events.\n\t *\n\t * @readonly\n\t * @member {String|Array.<String>} #domEventType\n\t */\n\n\t/**\n\t * Callback which should be called when the DOM event occurred. Note that the callback will not be called if\n\t * observer {@link #isEnabled is not enabled}.\n\t *\n\t * @see #domEventType\n\t * @abstract\n\t * @method #onDomEvent\n\t */\n\n\t/**\n\t * @inheritDoc\n\t */\n\tconstructor( document ) {\n\t\tsuper( document );\n\n\t\t/**\n\t\t * If set to `true` DOM events will be listened on the capturing phase.\n\t\t * Default value is `false`.\n\t\t *\n\t\t * @member {Boolean}\n\t\t */\n\t\tthis.useCapture = false;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tobserve( domElement ) {\n\t\tconst types = typeof this.domEventType == 'string' ? [ this.domEventType ] : this.domEventType;\n\n\t\ttypes.forEach( type => {\n\t\t\tthis.listenTo( domElement, type, ( eventInfo, domEvent ) => {\n\t\t\t\tif ( this.isEnabled ) {\n\t\t\t\t\tthis.onDomEvent( domEvent );\n\t\t\t\t}\n\t\t\t}, { useCapture: this.useCapture } );\n\t\t} );\n\t}\n\n\t/**\n\t * Calls `Document#fire()` if observer {@link #isEnabled is enabled}.\n\t *\n\t * @see module:utils/emittermixin~EmitterMixin#fire\n\t * @param {String} eventType The event type (name).\n\t * @param {Event} domEvent The DOM event.\n\t * @param {Object} [additionalData] The additional data which should extend the\n\t * {@link module:engine/view/observer/domeventdata~DomEventData event data} object.\n\t */\n\tfire( eventType, domEvent, additionalData ) {\n\t\tif ( this.isEnabled ) {\n\t\t\tthis.document.fire( eventType, new DomEventData( this.document, domEvent, additionalData ) );\n\t\t}\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/view/observer/domeventobserver.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/* globals window, document */\n\n/**\n * @module utils/dom/global\n */\n\n/**\n * A helper (module) giving an access to the global DOM objects such as `window` and\n * `document`. Accessing these objects using this helper allows easy and bulletproof\n * testing, i.e. stubbing native properties:\n *\n *\t\timport global from 'ckeditor5/utils/dom/global.js';\n *\n *\t\t// This stub will work for any code using global module.\n *\t\ttestUtils.sinon.stub( global, 'window', {\n *\t\t\tinnerWidth: 10000\n *\t\t} );\n *\n *\t\tconsole.log( global.window.innerWidth );\n */\nexport default { window, document };\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/dom/global.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/* global setTimeout, clearTimeout */\n\n/**\n * @module utils/focustracker\n */\n\nimport DomEmitterMixin from './dom/emittermixin';\nimport ObservableMixin from './observablemixin';\nimport CKEditorError from './ckeditorerror';\nimport mix from './mix';\n\n/**\n * Allows observing a group of `HTMLElement`s whether at least one of them is focused.\n *\n * Used by the {@link module:core/editor/editor~Editor} in order to track whether the focus is still within the application,\n * or were used outside of its UI.\n *\n * **Note** `focus` and `blur` listeners use event capturing, so it is only needed to register wrapper `HTMLElement`\n * which contain other `focusable` elements. But note that this wrapper element has to be focusable too\n * (have e.g. `tabindex=\"-1\"`).\n *\n * @mixes module:utils/dom/emittermixin~EmitterMixin\n * @mixes module:utils/observablemixin~ObservableMixin\n */\nexport default class FocusTracker {\n\tconstructor() {\n\t\t/**\n\t\t * True when one of the registered elements is focused.\n\t\t *\n\t\t * @readonly\n\t\t * @observable\n\t\t * @member {Boolean} #isFocused\n\t\t */\n\t\tthis.set( 'isFocused', false );\n\n\t\t/**\n\t\t * Currently focused element.\n\t\t *\n\t\t * @readonly\n\t\t * @member {HTMLElement}\n\t\t */\n\t\tthis.focusedElement = null;\n\n\t\t/**\n\t\t * List of registered elements.\n\t\t *\n\t\t * @private\n\t\t * @member {Set.<HTMLElement>}\n\t\t */\n\t\tthis._elements = new Set();\n\n\t\t/**\n\t\t * Event loop timeout.\n\t\t *\n\t\t * @private\n\t\t * @member {Number}\n\t\t */\n\t\tthis._nextEventLoopTimeout = null;\n\t}\n\n\t/**\n\t * Starts tracking the specified element.\n\t *\n\t * @param {HTMLElement} element\n\t */\n\tadd( element ) {\n\t\tif ( this._elements.has( element ) ) {\n\t\t\tthrow new CKEditorError( 'focusTracker-add-element-already-exist' );\n\t\t}\n\n\t\tthis.listenTo( element, 'focus', () => this._focus( element ), { useCapture: true } );\n\t\tthis.listenTo( element, 'blur', () => this._blur(), { useCapture: true } );\n\t\tthis._elements.add( element );\n\t}\n\n\t/**\n\t * Stops tracking the specified element and stops listening on this element.\n\t *\n\t * @param {HTMLElement} element\n\t */\n\tremove( element ) {\n\t\tif ( element === this.focusedElement ) {\n\t\t\tthis._blur( element );\n\t\t}\n\n\t\tif ( this._elements.has( element ) ) {\n\t\t\tthis.stopListening( element );\n\t\t\tthis._elements.delete( element );\n\t\t}\n\t}\n\n\t/**\n\t * Stores currently focused element and set {#isFocused} as `true`.\n\t *\n\t * @private\n\t * @param {HTMLElement} element Element which has been focused.\n\t */\n\t_focus( element ) {\n\t\tclearTimeout( this._nextEventLoopTimeout );\n\n\t\tthis.focusedElement = element;\n\t\tthis.isFocused = true;\n\t}\n\n\t/**\n\t * Clears currently focused element and set {@link #isFocused} as `false`.\n\t * This method uses `setTimeout` to change order of fires `blur` and `focus` events.\n\t *\n\t * @private\n\t * @fires blur\n\t */\n\t_blur() {\n\t\tthis._nextEventLoopTimeout = setTimeout( () => {\n\t\t\tthis.focusedElement = null;\n\t\t\tthis.isFocused = false;\n\t\t}, 0 );\n\t}\n\n\t/**\n\t * @event focus\n\t */\n\n\t/**\n\t * @event blur\n\t */\n}\n\nmix( FocusTracker, DomEmitterMixin );\nmix( FocusTracker, ObservableMixin );\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/focustracker.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/keystrokehandler\n */\n\nimport DomEmitterMixin from './dom/emittermixin';\nimport { getCode, parseKeystroke } from './keyboard';\n\n/**\n * Keystroke handler registers keystrokes so the callbacks associated\n * with these keystrokes will be executed if the matching `keydown` is fired\n * by a defined emitter.\n *\n *\t\tconst handler = new KeystrokeHandler();\n *\n *\t\thandler.listenTo( emitter );\n *\n *\t\thandler.set( 'ctrl + a', ( keyEventData, cancel ) => {\n *\t\t\tconsole.log( 'ctrl + a has been pressed' );\n *\t\t\tcancel();\n *\t\t} );\n */\nexport default class KeystrokeHandler {\n\t/**\n\t * Creates an instance of the keystroke handler.\n\t */\n\tconstructor() {\n\t\t/**\n\t\t * Listener used to listen to events for easier keystroke handler destruction.\n\t\t *\n\t\t * @private\n\t\t * @member {module:utils/dom/emittermixin~Emitter}\n\t\t */\n\t\tthis._listener = Object.create( DomEmitterMixin );\n\n\t\t/**\n\t\t * Map of the defined keystrokes. Keystroke codes are the keys.\n\t\t *\n\t\t * @private\n\t\t * @member {Map}\n\t\t */\n\t\tthis._keystrokes = new Map();\n\t}\n\n\t/**\n\t * Starts listening for `keydown` events from a given emitter.\n\t *\n\t * @param {module:utils/emittermixin~Emitter} emitter\n\t */\n\tlistenTo( emitter ) {\n\t\tthis._listener.listenTo( emitter, 'keydown', ( evt, data ) => {\n\t\t\tthis.press( data );\n\t\t} );\n\t}\n\n\t/**\n\t * Registers a handler for the specified keystroke.\n\t *\n\t * @param {String|Array.<String|Number>} keystroke Keystroke defined in a format accepted by\n\t * the {@link module:utils/keyboard~parseKeystroke} function.\n\t * @param {Function} callback A function called with the\n\t * {@link module:engine/view/observer/keyobserver~KeyEventData key event data} object and\n\t * a helper to both `preventDefault` and `stopPropagation` of the event.\n\t */\n\tset( keystroke, callback ) {\n\t\tconst keyCode = parseKeystroke( keystroke );\n\t\tconst callbacks = this._keystrokes.get( keyCode );\n\n\t\tif ( callbacks ) {\n\t\t\tcallbacks.push( callback );\n\t\t} else {\n\t\t\tthis._keystrokes.set( keyCode, [ callback ] );\n\t\t}\n\t}\n\n\t/**\n\t * Triggers a keystroke handler for a specified key combination, if such a keystroke was {@link #set defined}.\n\t *\n\t * @param {module:engine/view/observer/keyobserver~KeyEventData} keyEventData Key event data.\n\t * @returns {Boolean} Whether the keystroke was handled.\n\t */\n\tpress( keyEventData ) {\n\t\tconst keyCode = getCode( keyEventData );\n\t\tconst callbacks = this._keystrokes.get( keyCode );\n\n\t\tif ( !callbacks ) {\n\t\t\treturn false;\n\t\t}\n\n\t\tfor ( let callback of callbacks ) {\n\t\t\tcallback( keyEventData, () => {\n\t\t\t\tkeyEventData.preventDefault();\n\t\t\t\tkeyEventData.stopPropagation();\n\t\t\t} );\n\t\t}\n\n\t\treturn true;\n\t}\n\n\t/**\n\t * Destroys the keystroke handler.\n\t */\n\tdestroy() {\n\t\tthis._keystrokes = new Map();\n\t\tthis._listener.stopListening();\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/keystrokehandler.js","import eq from './eq';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/**\n * Assigns `value` to `key` of `object` if the existing value is not equivalent\n * using [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)\n * for equality comparisons.\n *\n * @private\n * @param {Object} object The object to modify.\n * @param {string} key The key of the property to assign.\n * @param {*} value The value to assign.\n */\nfunction assignValue(object, key, value) {\n  var objValue = object[key];\n  if (!(hasOwnProperty.call(object, key) && eq(objValue, value)) ||\n      (value === undefined && !(key in object))) {\n    object[key] = value;\n  }\n}\n\nexport default assignValue;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_assignValue.js","import SetCache from './_SetCache';\nimport arrayIncludes from './_arrayIncludes';\nimport arrayIncludesWith from './_arrayIncludesWith';\nimport arrayMap from './_arrayMap';\nimport baseUnary from './_baseUnary';\nimport cacheHas from './_cacheHas';\n\n/** Used as the size to enable large array optimizations. */\nvar LARGE_ARRAY_SIZE = 200;\n\n/**\n * The base implementation of methods like `_.difference` without support\n * for excluding multiple arrays or iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {Array} values The values to exclude.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of filtered values.\n */\nfunction baseDifference(array, values, iteratee, comparator) {\n  var index = -1,\n      includes = arrayIncludes,\n      isCommon = true,\n      length = array.length,\n      result = [],\n      valuesLength = values.length;\n\n  if (!length) {\n    return result;\n  }\n  if (iteratee) {\n    values = arrayMap(values, baseUnary(iteratee));\n  }\n  if (comparator) {\n    includes = arrayIncludesWith;\n    isCommon = false;\n  }\n  else if (values.length >= LARGE_ARRAY_SIZE) {\n    includes = cacheHas;\n    isCommon = false;\n    values = new SetCache(values);\n  }\n  outer:\n  while (++index < length) {\n    var value = array[index],\n        computed = iteratee ? iteratee(value) : value;\n\n    value = (comparator || value !== 0) ? value : 0;\n    if (isCommon && computed === computed) {\n      var valuesIndex = valuesLength;\n      while (valuesIndex--) {\n        if (values[valuesIndex] === computed) {\n          continue outer;\n        }\n      }\n      result.push(value);\n    }\n    else if (!includes(values, computed, comparator)) {\n      result.push(value);\n    }\n  }\n  return result;\n}\n\nexport default baseDifference;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_baseDifference.js","import baseHas from './_baseHas';\nimport baseKeys from './_baseKeys';\nimport indexKeys from './_indexKeys';\nimport isArrayLike from './isArrayLike';\nimport isIndex from './_isIndex';\nimport isPrototype from './_isPrototype';\n\n/**\n * Creates an array of the own enumerable property names of `object`.\n *\n * **Note:** Non-object values are coerced to objects. See the\n * [ES spec](http://ecma-international.org/ecma-262/6.0/#sec-object.keys)\n * for more details.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n * @example\n *\n * function Foo() {\n *   this.a = 1;\n *   this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.keys(new Foo);\n * // => ['a', 'b'] (iteration order is not guaranteed)\n *\n * _.keys('hi');\n * // => ['0', '1']\n */\nfunction keys(object) {\n  var isProto = isPrototype(object);\n  if (!(isProto || isArrayLike(object))) {\n    return baseKeys(object);\n  }\n  var indexes = indexKeys(object),\n      skipIndexes = !!indexes,\n      result = indexes || [],\n      length = result.length;\n\n  for (var key in object) {\n    if (baseHas(object, key) &&\n        !(skipIndexes && (key == 'length' || isIndex(key, length))) &&\n        !(isProto && key == 'constructor')) {\n      result.push(key);\n    }\n  }\n  return result;\n}\n\nexport default keys;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/keys.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/uid\n */\n\n/**\n * Returns a unique id. This id is a number (starting from 1) which will never get repeated on successive calls\n * to this method.\n *\n * @returns {String} A number representing the id.\n */\nexport default function uid() {\n\tlet uuid = 'e'; // Make sure that id does not start with number.\n\n\tfor ( let i = 0; i < 8; i++ ) {\n\t\tuuid += Math.floor( ( 1 + Math.random() ) * 0x10000 ).toString( 16 ).substring( 1 );\n\t}\n\n\treturn uuid;\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/uid.js","/*\r\n\tMIT License http://www.opensource.org/licenses/mit-license.php\r\n\tAuthor Tobias Koppers @sokra\r\n*/\r\nvar stylesInDom = {},\r\n\tmemoize = function(fn) {\r\n\t\tvar memo;\r\n\t\treturn function () {\r\n\t\t\tif (typeof memo === \"undefined\") memo = fn.apply(this, arguments);\r\n\t\t\treturn memo;\r\n\t\t};\r\n\t},\r\n\tisOldIE = memoize(function() {\r\n\t\treturn /msie [6-9]\\b/.test(window.navigator.userAgent.toLowerCase());\r\n\t}),\r\n\tgetHeadElement = memoize(function () {\r\n\t\treturn document.head || document.getElementsByTagName(\"head\")[0];\r\n\t}),\r\n\tsingletonElement = null,\r\n\tsingletonCounter = 0,\r\n\tstyleElementsInsertedAtTop = [];\r\n\r\nmodule.exports = function(list, options) {\r\n\tif(typeof DEBUG !== \"undefined\" && DEBUG) {\r\n\t\tif(typeof document !== \"object\") throw new Error(\"The style-loader cannot be used in a non-browser environment\");\r\n\t}\r\n\r\n\toptions = options || {};\r\n\t// Force single-tag solution on IE6-9, which has a hard limit on the # of <style>\r\n\t// tags it will allow on a page\r\n\tif (typeof options.singleton === \"undefined\") options.singleton = isOldIE();\r\n\r\n\t// By default, add <style> tags to the bottom of <head>.\r\n\tif (typeof options.insertAt === \"undefined\") options.insertAt = \"bottom\";\r\n\r\n\tvar styles = listToStyles(list);\r\n\taddStylesToDom(styles, options);\r\n\r\n\treturn function update(newList) {\r\n\t\tvar mayRemove = [];\r\n\t\tfor(var i = 0; i < styles.length; i++) {\r\n\t\t\tvar item = styles[i];\r\n\t\t\tvar domStyle = stylesInDom[item.id];\r\n\t\t\tdomStyle.refs--;\r\n\t\t\tmayRemove.push(domStyle);\r\n\t\t}\r\n\t\tif(newList) {\r\n\t\t\tvar newStyles = listToStyles(newList);\r\n\t\t\taddStylesToDom(newStyles, options);\r\n\t\t}\r\n\t\tfor(var i = 0; i < mayRemove.length; i++) {\r\n\t\t\tvar domStyle = mayRemove[i];\r\n\t\t\tif(domStyle.refs === 0) {\r\n\t\t\t\tfor(var j = 0; j < domStyle.parts.length; j++)\r\n\t\t\t\t\tdomStyle.parts[j]();\r\n\t\t\t\tdelete stylesInDom[domStyle.id];\r\n\t\t\t}\r\n\t\t}\r\n\t};\r\n}\r\n\r\nfunction addStylesToDom(styles, options) {\r\n\tfor(var i = 0; i < styles.length; i++) {\r\n\t\tvar item = styles[i];\r\n\t\tvar domStyle = stylesInDom[item.id];\r\n\t\tif(domStyle) {\r\n\t\t\tdomStyle.refs++;\r\n\t\t\tfor(var j = 0; j < domStyle.parts.length; j++) {\r\n\t\t\t\tdomStyle.parts[j](item.parts[j]);\r\n\t\t\t}\r\n\t\t\tfor(; j < item.parts.length; j++) {\r\n\t\t\t\tdomStyle.parts.push(addStyle(item.parts[j], options));\r\n\t\t\t}\r\n\t\t} else {\r\n\t\t\tvar parts = [];\r\n\t\t\tfor(var j = 0; j < item.parts.length; j++) {\r\n\t\t\t\tparts.push(addStyle(item.parts[j], options));\r\n\t\t\t}\r\n\t\t\tstylesInDom[item.id] = {id: item.id, refs: 1, parts: parts};\r\n\t\t}\r\n\t}\r\n}\r\n\r\nfunction listToStyles(list) {\r\n\tvar styles = [];\r\n\tvar newStyles = {};\r\n\tfor(var i = 0; i < list.length; i++) {\r\n\t\tvar item = list[i];\r\n\t\tvar id = item[0];\r\n\t\tvar css = item[1];\r\n\t\tvar media = item[2];\r\n\t\tvar sourceMap = item[3];\r\n\t\tvar part = {css: css, media: media, sourceMap: sourceMap};\r\n\t\tif(!newStyles[id])\r\n\t\t\tstyles.push(newStyles[id] = {id: id, parts: [part]});\r\n\t\telse\r\n\t\t\tnewStyles[id].parts.push(part);\r\n\t}\r\n\treturn styles;\r\n}\r\n\r\nfunction insertStyleElement(options, styleElement) {\r\n\tvar head = getHeadElement();\r\n\tvar lastStyleElementInsertedAtTop = styleElementsInsertedAtTop[styleElementsInsertedAtTop.length - 1];\r\n\tif (options.insertAt === \"top\") {\r\n\t\tif(!lastStyleElementInsertedAtTop) {\r\n\t\t\thead.insertBefore(styleElement, head.firstChild);\r\n\t\t} else if(lastStyleElementInsertedAtTop.nextSibling) {\r\n\t\t\thead.insertBefore(styleElement, lastStyleElementInsertedAtTop.nextSibling);\r\n\t\t} else {\r\n\t\t\thead.appendChild(styleElement);\r\n\t\t}\r\n\t\tstyleElementsInsertedAtTop.push(styleElement);\r\n\t} else if (options.insertAt === \"bottom\") {\r\n\t\thead.appendChild(styleElement);\r\n\t} else {\r\n\t\tthrow new Error(\"Invalid value for parameter 'insertAt'. Must be 'top' or 'bottom'.\");\r\n\t}\r\n}\r\n\r\nfunction removeStyleElement(styleElement) {\r\n\tstyleElement.parentNode.removeChild(styleElement);\r\n\tvar idx = styleElementsInsertedAtTop.indexOf(styleElement);\r\n\tif(idx >= 0) {\r\n\t\tstyleElementsInsertedAtTop.splice(idx, 1);\r\n\t}\r\n}\r\n\r\nfunction createStyleElement(options) {\r\n\tvar styleElement = document.createElement(\"style\");\r\n\tstyleElement.type = \"text/css\";\r\n\tinsertStyleElement(options, styleElement);\r\n\treturn styleElement;\r\n}\r\n\r\nfunction createLinkElement(options) {\r\n\tvar linkElement = document.createElement(\"link\");\r\n\tlinkElement.rel = \"stylesheet\";\r\n\tinsertStyleElement(options, linkElement);\r\n\treturn linkElement;\r\n}\r\n\r\nfunction addStyle(obj, options) {\r\n\tvar styleElement, update, remove;\r\n\r\n\tif (options.singleton) {\r\n\t\tvar styleIndex = singletonCounter++;\r\n\t\tstyleElement = singletonElement || (singletonElement = createStyleElement(options));\r\n\t\tupdate = applyToSingletonTag.bind(null, styleElement, styleIndex, false);\r\n\t\tremove = applyToSingletonTag.bind(null, styleElement, styleIndex, true);\r\n\t} else if(obj.sourceMap &&\r\n\t\ttypeof URL === \"function\" &&\r\n\t\ttypeof URL.createObjectURL === \"function\" &&\r\n\t\ttypeof URL.revokeObjectURL === \"function\" &&\r\n\t\ttypeof Blob === \"function\" &&\r\n\t\ttypeof btoa === \"function\") {\r\n\t\tstyleElement = createLinkElement(options);\r\n\t\tupdate = updateLink.bind(null, styleElement);\r\n\t\tremove = function() {\r\n\t\t\tremoveStyleElement(styleElement);\r\n\t\t\tif(styleElement.href)\r\n\t\t\t\tURL.revokeObjectURL(styleElement.href);\r\n\t\t};\r\n\t} else {\r\n\t\tstyleElement = createStyleElement(options);\r\n\t\tupdate = applyToTag.bind(null, styleElement);\r\n\t\tremove = function() {\r\n\t\t\tremoveStyleElement(styleElement);\r\n\t\t};\r\n\t}\r\n\r\n\tupdate(obj);\r\n\r\n\treturn function updateStyle(newObj) {\r\n\t\tif(newObj) {\r\n\t\t\tif(newObj.css === obj.css && newObj.media === obj.media && newObj.sourceMap === obj.sourceMap)\r\n\t\t\t\treturn;\r\n\t\t\tupdate(obj = newObj);\r\n\t\t} else {\r\n\t\t\tremove();\r\n\t\t}\r\n\t};\r\n}\r\n\r\nvar replaceText = (function () {\r\n\tvar textStore = [];\r\n\r\n\treturn function (index, replacement) {\r\n\t\ttextStore[index] = replacement;\r\n\t\treturn textStore.filter(Boolean).join('\\n');\r\n\t};\r\n})();\r\n\r\nfunction applyToSingletonTag(styleElement, index, remove, obj) {\r\n\tvar css = remove ? \"\" : obj.css;\r\n\r\n\tif (styleElement.styleSheet) {\r\n\t\tstyleElement.styleSheet.cssText = replaceText(index, css);\r\n\t} else {\r\n\t\tvar cssNode = document.createTextNode(css);\r\n\t\tvar childNodes = styleElement.childNodes;\r\n\t\tif (childNodes[index]) styleElement.removeChild(childNodes[index]);\r\n\t\tif (childNodes.length) {\r\n\t\t\tstyleElement.insertBefore(cssNode, childNodes[index]);\r\n\t\t} else {\r\n\t\t\tstyleElement.appendChild(cssNode);\r\n\t\t}\r\n\t}\r\n}\r\n\r\nfunction applyToTag(styleElement, obj) {\r\n\tvar css = obj.css;\r\n\tvar media = obj.media;\r\n\r\n\tif(media) {\r\n\t\tstyleElement.setAttribute(\"media\", media)\r\n\t}\r\n\r\n\tif(styleElement.styleSheet) {\r\n\t\tstyleElement.styleSheet.cssText = css;\r\n\t} else {\r\n\t\twhile(styleElement.firstChild) {\r\n\t\t\tstyleElement.removeChild(styleElement.firstChild);\r\n\t\t}\r\n\t\tstyleElement.appendChild(document.createTextNode(css));\r\n\t}\r\n}\r\n\r\nfunction updateLink(linkElement, obj) {\r\n\tvar css = obj.css;\r\n\tvar sourceMap = obj.sourceMap;\r\n\r\n\tif(sourceMap) {\r\n\t\t// http://stackoverflow.com/a/26603875\r\n\t\tcss += \"\\n/*# sourceMappingURL=data:application/json;base64,\" + btoa(unescape(encodeURIComponent(JSON.stringify(sourceMap)))) + \" */\";\r\n\t}\r\n\r\n\tvar blob = new Blob([css], { type: \"text/css\" });\r\n\r\n\tvar oldSrc = linkElement.href;\r\n\r\n\tlinkElement.href = URL.createObjectURL(blob);\r\n\r\n\tif(oldSrc)\r\n\t\tURL.revokeObjectURL(oldSrc);\r\n}\r\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/style-loader/addStyles.js\n// module id = 66\n// module chunks = 0","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module module:engine/model/documentfragment\n */\n\nimport NodeList from './nodelist';\nimport Element from './element';\nimport Text from './text';\nimport isIterable from '@ckeditor/ckeditor5-utils/src/isiterable';\n\n/**\n * DocumentFragment represents a part of model which does not have a common root but it's top-level nodes\n * can be seen as siblings. In other words, it is a detached part of model tree, without a root.\n */\nexport default class DocumentFragment {\n\t/**\n\t * Creates an empty `DocumentFragment`.\n\t *\n\t * @param {module:engine/model/node~Node|Iterable.<module:engine/model/node~Node>} [children]\n\t * Nodes to be contained inside the `DocumentFragment`.\n\t */\n\tconstructor( children ) {\n\t\t/**\n\t\t * List of nodes contained inside the document fragment.\n\t\t *\n\t\t * @private\n\t\t * @member {module:engine/model/nodelist~NodeList} module:engine/model/documentfragment~DocumentFragment#_children\n\t\t */\n\t\tthis._children = new NodeList();\n\n\t\tif ( children ) {\n\t\t\tthis.insertChildren( 0, children );\n\t\t}\n\t}\n\n\t/**\n\t * Returns an iterator that iterates over all nodes contained inside this document fragment.\n\t *\n\t * @returns {Iterator.<module:engine/model/node~Node>}\n\t */\n\t[ Symbol.iterator ]() {\n\t\treturn this.getChildren();\n\t}\n\n\t/**\n\t * Number of this document fragment's children.\n\t *\n\t * @readonly\n\t * @type {Number}\n\t */\n\tget childCount() {\n\t\treturn this._children.length;\n\t}\n\n\t/**\n\t * Sum of {module:engine/model/node~Node#offsetSize offset sizes} of all of this document fragment's children.\n\t *\n\t * @readonly\n\t * @type {Number}\n\t */\n\tget maxOffset() {\n\t\treturn this._children.maxOffset;\n\t}\n\n\t/**\n\t * Is `true` if there are no nodes inside this document fragment, `false` otherwise.\n\t *\n\t * @readonly\n\t * @type {Boolean}\n\t */\n\tget isEmpty() {\n\t\treturn this.childCount === 0;\n\t}\n\n\t/**\n\t * Artificial root of `DocumentFragment`. Returns itself. Added for compatibility reasons.\n\t *\n\t * @readonly\n\t * @type {module:engine/model/documentfragment~DocumentFragment}\n\t */\n\tget root() {\n\t\treturn this;\n\t}\n\n\t/**\n\t * Artificial parent of `DocumentFragment`. Returns `null`. Added for compatibility reasons.\n\t *\n\t * @readonly\n\t * @type {null}\n\t */\n\tget parent() {\n\t\treturn null;\n\t}\n\n\t/**\n\t * Checks whether given model tree object is of given type.\n\t *\n\t * Read more in {@link module:engine/model/node~Node#is}.\n\t *\n\t * @param {String} type\n\t * @returns {Boolean}\n\t */\n\tis( type ) {\n\t\treturn type == 'documentFragment';\n\t}\n\n\t/**\n\t * Gets the child at the given index. Returns `null` if incorrect index was passed.\n\t *\n\t * @param {Number} index Index of child.\n\t * @returns {module:engine/model/node~Node|null} Child node.\n\t */\n\tgetChild( index ) {\n\t\treturn this._children.getNode( index );\n\t}\n\n\t/**\n\t * Returns an iterator that iterates over all of this document fragment's children.\n\t *\n\t * @returns {Iterable.<module:engine/model/node~Node>}\n\t */\n\tgetChildren() {\n\t\treturn this._children[ Symbol.iterator ]();\n\t}\n\n\t/**\n\t * Returns an index of the given child node. Returns `null` if given node is not a child of this document fragment.\n\t *\n\t * @param {module:engine/model/node~Node} node Child node to look for.\n\t * @returns {Number|null} Child node's index.\n\t */\n\tgetChildIndex( node ) {\n\t\treturn this._children.getNodeIndex( node );\n\t}\n\n\t/**\n\t * Returns the starting offset of given child. Starting offset is equal to the sum of\n\t * {module:engine/model/node~Node#offsetSize offset sizes} of all node's siblings that are before it. Returns `null` if\n\t * given node is not a child of this document fragment.\n\t *\n\t * @param {module:engine/model/node~Node} node Child node to look for.\n\t * @returns {Number|null} Child node's starting offset.\n\t */\n\tgetChildStartOffset( node ) {\n\t\treturn this._children.getNodeStartOffset( node );\n\t}\n\n\t/**\n\t * Returns path to a `DocumentFragment`, which is an empty array. Added for compatibility reasons.\n\t *\n\t * @returns {Array}\n\t */\n\tgetPath() {\n\t\treturn [];\n\t}\n\n\t/**\n\t * Converts offset \"position\" to index \"position\".\n\t *\n\t * Returns index of a node that occupies given offset. If given offset is too low, returns `0`. If given offset is\n\t * too high, returns index after last child}.\n\t *\n\t *\t\tconst textNode = new Text( 'foo' );\n\t *\t\tconst pElement = new Element( 'p' );\n\t *\t\tconst docFrag = new DocumentFragment( [ textNode, pElement ] );\n\t *\t\tdocFrag.offsetToIndex( -1 ); // Returns 0, because offset is too low.\n\t *\t\tdocFrag.offsetToIndex( 0 ); // Returns 0, because offset 0 is taken by `textNode` which is at index 0.\n\t *\t\tdocFrag.offsetToIndex( 1 ); // Returns 0, because `textNode` has `offsetSize` equal to 3, so it occupies offset 1 too.\n\t *\t\tdocFrag.offsetToIndex( 2 ); // Returns 0.\n\t *\t\tdocFrag.offsetToIndex( 3 ); // Returns 1.\n\t *\t\tdocFrag.offsetToIndex( 4 ); // Returns 2. There are no nodes at offset 4, so last available index is returned.\n\t *\n\t * @param {Number} offset Offset to look for.\n\t * @returns {Number} Index of a node that occupies given offset.\n\t */\n\toffsetToIndex( offset ) {\n\t\treturn this._children.offsetToIndex( offset );\n\t}\n\n\t/**\n\t * {@link #insertChildren Inserts} one or more nodes at the end of this document fragment.\n\t *\n\t * @param {module:engine/model/node~Node|Iterable.<module:engine/model/node~Node>} nodes Nodes to be inserted.\n\t */\n\tappendChildren( nodes ) {\n\t\tthis.insertChildren( this.childCount, nodes );\n\t}\n\n\t/**\n\t * Inserts one or more nodes at the given index and sets {@link module:engine/model/node~Node#parent parent} of these nodes\n\t * to this document fragment.\n\t *\n\t * @param {Number} index Index at which nodes should be inserted.\n\t * @param {module:engine/model/node~Node|Iterable.<module:engine/model/node~Node>} nodes Nodes to be inserted.\n\t */\n\tinsertChildren( index, nodes ) {\n\t\tnodes = normalize( nodes );\n\n\t\tfor ( let node of nodes ) {\n\t\t\tnode.parent = this;\n\t\t}\n\n\t\tthis._children.insertNodes( index, nodes );\n\t}\n\n\t/**\n\t * Removes one or more nodes starting at the given index\n\t * and sets {@link module:engine/model/node~Node#parent parent} of these nodes to `null`.\n\t *\n\t * @param {Number} index Index of the first node to remove.\n\t * @param {Number} [howMany=1] Number of nodes to remove.\n\t * @returns {Array.<module:engine/model/node~Node>} Array containing removed nodes.\n\t */\n\tremoveChildren( index, howMany = 1 ) {\n\t\tconst nodes = this._children.removeNodes( index, howMany );\n\n\t\tfor ( let node of nodes ) {\n\t\t\tnode.parent = null;\n\t\t}\n\n\t\treturn nodes;\n\t}\n\n\t/**\n\t * Converts `DocumentFragment` instance to plain object and returns it.\n\t * Takes care of converting all of this document fragment's children.\n\t *\n\t * @returns {Object} `DocumentFragment` instance converted to plain object.\n\t */\n\ttoJSON() {\n\t\tlet json = [];\n\n\t\tfor ( let node of this._children ) {\n\t\t\tjson.push( node.toJSON() );\n\t\t}\n\n\t\treturn json;\n\t}\n\n\t/**\n\t * Creates a `DocumentFragment` instance from given plain object (i.e. parsed JSON string).\n\t * Converts `DocumentFragment` children to proper nodes.\n\t *\n\t * @param {Object} json Plain object to be converted to `DocumentFragment`.\n\t * @returns {module:engine/model/documentfragment~DocumentFragment} `DocumentFragment` instance created using given plain object.\n\t */\n\tstatic fromJSON( json ) {\n\t\tlet children = [];\n\n\t\tfor ( let child of json ) {\n\t\t\tif ( child.name ) {\n\t\t\t\t// If child has name property, it is an Element.\n\t\t\t\tchildren.push( Element.fromJSON( child ) );\n\t\t\t} else {\n\t\t\t\t// Otherwise, it is a Text node.\n\t\t\t\tchildren.push( Text.fromJSON( child ) );\n\t\t\t}\n\t\t}\n\n\t\treturn new DocumentFragment( children );\n\t}\n}\n\n// Converts strings to Text and non-iterables to arrays.\n//\n// @param {String|module:engine/model/node~Node|Iterable.<String|module:engine/model/node~Node>}\n// @return {Iterable.<module:engine/model/node~Node>}\nfunction normalize( nodes ) {\n\t// Separate condition because string is iterable.\n\tif ( typeof nodes == 'string' ) {\n\t\treturn [ new Text( nodes ) ];\n\t}\n\n\tif ( !isIterable( nodes ) ) {\n\t\tnodes = [ nodes ];\n\t}\n\n\t// Array.from to enable .map() on non-arrays.\n\treturn Array.from( nodes ).map( ( node ) => typeof node == 'string' ? new Text( node ) : node );\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/documentfragment.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/node\n */\n\nimport toMap from '@ckeditor/ckeditor5-utils/src/tomap';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/**\n * Model node. Most basic structure of model tree.\n *\n * This is an abstract class that is a base for other classes representing different nodes in model.\n *\n * **Note:** If a node is detached from the model tree, you can manipulate it using it's API.\n * However, it is **very important** that nodes already attached to model tree should be only changed through\n * {@link module:engine/model/document~Document#batch Batch API}.\n *\n * Changes done by `Node` methods, like {@link module:engine/model/element~Element#insertChildren insertChildren} or\n * {@link module:engine/model/node~Node#setAttribute setAttribute}\n * do not generate {@link module:engine/model/operation/operation~Operation operations}\n * which are essential for correct editor work if you modify nodes in {@link module:engine/model/document~Document document} root.\n *\n * The flow of working on `Node` (and classes that inherits from it) is as such:\n * 1. You can create a `Node` instance, modify it using it's API.\n * 2. Add `Node` to the model using `Batch` API.\n * 3. Change `Node` that was already added to the model using `Batch` API.\n *\n * Similarly, you cannot use `Batch` API on a node that has not been added to the model tree, with the exception\n * of {@link module:engine/model/batch~Batch#insert inserting} that node to the model tree.\n *\n * Be aware that using {@link module:engine/model/batch~Batch#remove remove from Batch API} does not allow to use `Node` API because\n * the information about `Node` is still kept in model document.\n *\n * In case of {@link module:engine/model/element~Element element node}, adding and removing children also counts as changing a node and\n * follows same rules.\n */\nexport default class Node {\n\t/**\n\t * Creates a model node.\n\t *\n\t * This is an abstract class, so this constructor should not be used directly.\n\t *\n\t * @abstract\n\t * @param {Object} [attrs] Node's attributes. See {@link module:utils/tomap~toMap} for a list of accepted values.\n\t */\n\tconstructor( attrs ) {\n\t\t/**\n\t\t * Parent of this node. It could be {@link module:engine/model/element~Element}\n\t\t * or {@link module:engine/model/documentfragment~DocumentFragment}.\n\t\t * Equals to `null` if the node has no parent.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/model/element~Element|module:engine/model/documentfragment~DocumentFragment|null}\n\t\t */\n\t\tthis.parent = null;\n\n\t\t/**\n\t\t * Attributes set on this node.\n\t\t *\n\t\t * @private\n\t\t * @member {Map} module:engine/model/node~Node#_attrs\n\t\t */\n\t\tthis._attrs = toMap( attrs );\n\t}\n\n\t/**\n\t * Index of this node in it's parent or `null` if the node has no parent.\n\t *\n\t * Accessing this property throws an error if this node's parent element does not contain it.\n\t * This means that model tree got broken.\n\t *\n\t * @readonly\n\t * @type {Number|null}\n\t */\n\tget index() {\n\t\tlet pos;\n\n\t\tif ( !this.parent ) {\n\t\t\treturn null;\n\t\t}\n\n\t\tif ( ( pos = this.parent.getChildIndex( this ) ) === null ) {\n\t\t\t/**\n\t\t\t * The node's parent does not contain this node.\n\t\t\t *\n\t\t\t * @error node-not-found-in-parent\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'model-node-not-found-in-parent: The node\\'s parent does not contain this node.' );\n\t\t}\n\n\t\treturn pos;\n\t}\n\n\t/**\n\t * Offset at which this node starts in it's parent. It is equal to the sum of {@link #offsetSize offsetSize}\n\t * of all it's previous siblings. Equals to `null` if node has no parent.\n\t *\n\t * Accessing this property throws an error if this node's parent element does not contain it.\n\t * This means that model tree got broken.\n\t *\n\t * @readonly\n\t * @type {Number|Null}\n\t */\n\tget startOffset() {\n\t\tlet pos;\n\n\t\tif ( !this.parent ) {\n\t\t\treturn null;\n\t\t}\n\n\t\tif ( ( pos = this.parent.getChildStartOffset( this ) ) === null ) {\n\t\t\t/**\n\t\t\t * The node's parent does not contain this node.\n\t\t\t *\n\t\t\t * @error node-not-found-in-parent\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'model-node-not-found-in-parent: The node\\'s parent does not contain this node.' );\n\t\t}\n\n\t\treturn pos;\n\t}\n\n\t/**\n\t * Offset size of this node. Represents how much \"offset space\" is occupied by the node in it's parent.\n\t * It is important for {@link module:engine/model/position~Position position}. When node has `offsetSize` greater than `1`, position\n\t * can be placed between that node start and end. `offsetSize` greater than `1` is for nodes that represents more\n\t * than one entity, i.e. {@link module:engine/model/text~Text text node}.\n\t *\n\t * @readonly\n\t * @type {Number}\n\t */\n\tget offsetSize() {\n\t\treturn 1;\n\t}\n\n\t/**\n\t * Offset at which this node ends in it's parent. It is equal to the sum of this node's\n\t * {@link module:engine/model/node~Node#startOffset start offset} and {@link #offsetSize offset size}.\n\t * Equals to `null` if the node has no parent.\n\t *\n\t * @readonly\n\t * @type {Number|null}\n\t */\n\tget endOffset() {\n\t\tif ( !this.parent ) {\n\t\t\treturn null;\n\t\t}\n\n\t\treturn this.startOffset + this.offsetSize;\n\t}\n\n\t/**\n\t * Node's next sibling or `null` if the node is a last child of it's parent or if the node has no parent.\n\t *\n\t * @readonly\n\t * @type {module:engine/model/node~Node|null}\n\t */\n\tget nextSibling() {\n\t\tconst index = this.index;\n\n\t\treturn ( index !== null && this.parent.getChild( index + 1 ) ) || null;\n\t}\n\n\t/**\n\t * Node's previous sibling or `null` if the node is a first child of it's parent or if the node has no parent.\n\t *\n\t * @readonly\n\t * @type {module:engine/model/node~Node|null}\n\t */\n\tget previousSibling() {\n\t\tconst index = this.index;\n\n\t\treturn ( index !== null && this.parent.getChild( index - 1 ) ) || null;\n\t}\n\n\t/**\n\t * The top-most ancestor of the node. If node has no parent it is the root itself. If the node is a part\n\t * of {@link module:engine/model/documentfragment~DocumentFragment}, it's `root` is equal to that `DocumentFragment`.\n\t *\n\t * @readonly\n\t * @type {module:engine/model/node~Node|module:engine/model/documentfragment~DocumentFragment}\n\t */\n\tget root() {\n\t\tlet root = this;\n\n\t\twhile ( root.parent ) {\n\t\t\troot = root.parent;\n\t\t}\n\n\t\treturn root;\n\t}\n\n\t/**\n\t * {@link module:engine/model/document~Document Document} that owns this node or `null` if the node has no parent or is inside\n\t * a {@link module:engine/model/documentfragment~DocumentFragment DocumentFragment}.\n\t *\n\t * @readonly\n\t * @type {module:engine/model/document~Document|null}\n\t */\n\tget document() {\n\t\t// This is a top element of a sub-tree.\n\t\tif ( this.root == this ) {\n\t\t\treturn null;\n\t\t}\n\n\t\t// Root may be `DocumentFragment` which does not have document property.\n\t\treturn this.root.document || null;\n\t}\n\n\t/**\n\t * Creates a copy of this node, that is a node with exactly same attributes, and returns it.\n\t *\n\t * @returns {module:engine/model/node~Node} Node with same attributes as this node.\n\t */\n\tclone() {\n\t\treturn new Node( this._attrs );\n\t}\n\n\t/**\n\t * Gets path to the node. The path is an array containing starting offsets of consecutive ancestors of this node,\n\t * beginning from {@link module:engine/model/node~Node#root root}, down to this node's starting offset. The path can be used to\n\t * create {@link module:engine/model/position~Position Position} instance.\n\t *\n\t *\t\tconst abc = new Text( 'abc' );\n\t *\t\tconst foo = new Text( 'foo' );\n\t *\t\tconst h1 = new Element( 'h1', null, new Text( 'header' ) );\n\t *\t\tconst p = new Element( 'p', null, [ abc, foo ] );\n\t *\t\tconst div = new Element( 'div', null, [ h1, p ] );\n\t *\t\tfoo.getPath(); // Returns [ 1, 3 ]. `foo` is in `p` which is in `div`. `p` starts at offset 1, while `foo` at 3.\n\t *\t\th1.getPath(); // Returns [ 0 ].\n\t *\t\tdiv.getPath(); // Returns [].\n\t *\n\t * @returns {Array.<Number>} The path.\n\t */\n\tgetPath() {\n\t\tconst path = [];\n\t\tlet node = this;\n\n\t\twhile ( node.parent ) {\n\t\t\tpath.unshift( node.startOffset );\n\t\t\tnode = node.parent;\n\t\t}\n\n\t\treturn path;\n\t}\n\n\t/**\n\t * Returns ancestors array of this node.\n\t *\n\t * @param {Object} options Options object.\n\t * @param {Boolean} [options.includeNode=false] When set to `true` this node will be also included in parent's array.\n\t * @param {Boolean} [options.parentFirst=false] When set to `true`, array will be sorted from node's parent to root element,\n\t * otherwise root element will be the first item in the array.\n\t * @returns {Array} Array with ancestors.\n\t */\n\tgetAncestors( options = { includeNode: false, parentFirst: false } ) {\n\t\tconst ancestors = [];\n\t\tlet parent = options.includeNode ? this : this.parent;\n\n\t\twhile ( parent ) {\n\t\t\tancestors[ options.parentFirst ? 'push' : 'unshift' ]( parent );\n\t\t\tparent = parent.parent;\n\t\t}\n\n\t\treturn ancestors;\n\t}\n\n\t/**\n\t * Removes this node from it's parent.\n\t */\n\tremove() {\n\t\tthis.parent.removeChildren( this.index );\n\t}\n\n\t/**\n\t * Checks if the node has an attribute with given key.\n\t *\n\t * @param {String} key Key of attribute to check.\n\t * @returns {Boolean} `true` if attribute with given key is set on node, `false` otherwise.\n\t */\n\thasAttribute( key ) {\n\t\treturn this._attrs.has( key );\n\t}\n\n\t/**\n\t * Gets an attribute value for given key or `undefined` if that attribute is not set on node.\n\t *\n\t * @param {String} key Key of attribute to look for.\n\t * @returns {*} Attribute value or `undefined`.\n\t */\n\tgetAttribute( key ) {\n\t\treturn this._attrs.get( key );\n\t}\n\n\t/**\n\t * Returns iterator that iterates over this node's attributes.\n\t *\n\t * Attributes are returned as arrays containing two items. First one is attribute key and second is attribute value.\n\t * This format is accepted by native `Map` object and also can be passed in `Node` constructor.\n\t *\n\t * @returns {Iterable.<*>}\n\t */\n\tgetAttributes() {\n\t\treturn this._attrs.entries();\n\t}\n\n\t/**\n\t * Returns iterator that iterates over this node's attribute keys.\n\t *\n\t * @returns {Iterator.<String>}\n\t */\n\tgetAttributeKeys() {\n\t\treturn this._attrs.keys();\n\t}\n\n\t/**\n\t * Sets attribute on the node. If attribute with the same key already is set, it's value is overwritten.\n\t *\n\t * @param {String} key Key of attribute to set.\n\t * @param {*} value Attribute value.\n\t */\n\tsetAttribute( key, value ) {\n\t\tthis._attrs.set( key, value );\n\t}\n\n\t/**\n\t * Removes all attributes from the node and sets given attributes.\n\t *\n\t * @param {Object} [attrs] Attributes to set. See {@link module:utils/tomap~toMap} for a list of accepted values.\n\t */\n\tsetAttributesTo( attrs ) {\n\t\tthis._attrs = toMap( attrs );\n\t}\n\n\t/**\n\t * Removes an attribute with given key from the node.\n\t *\n\t * @param {String} key Key of attribute to remove.\n\t * @returns {Boolean} `true` if the attribute was set on the element, `false` otherwise.\n\t */\n\tremoveAttribute( key ) {\n\t\treturn this._attrs.delete( key );\n\t}\n\n\t/**\n\t * Removes all attributes from the node.\n\t */\n\tclearAttributes() {\n\t\tthis._attrs.clear();\n\t}\n\n\t/**\n\t * Converts `Node` to plain object and returns it.\n\t *\n\t * @returns {Object} `Node` converted to plain object.\n\t */\n\ttoJSON() {\n\t\tlet json = {};\n\n\t\tif ( this._attrs.size ) {\n\t\t\tjson.attributes = [ ...this._attrs ];\n\t\t}\n\n\t\treturn json;\n\t}\n\n\t/**\n\t * Checks whether given model tree object is of given type.\n\t *\n\t * This method is useful when processing model tree objects that are of unknown type. For example, a function\n\t * may return {@link module:engine/model/documentfragment~DocumentFragment} or {@link module:engine/model/node~Node}\n\t * that can be either text node or element. This method can be used to check what kind of object is returned.\n\t *\n\t *\t\tobj.is( 'node' ); // true for any node, false for document fragment\n\t *\t\tobj.is( 'documentFragment' ); // true for document fragment, false for any node\n\t *\t\tobj.is( 'element' ); // true for any element, false for text node or document fragment\n\t *\t\tobj.is( 'element', 'paragraph' ); // true only for element which name is 'paragraph'\n\t *\t\tobj.is( 'paragraph' ); // shortcut for obj.is( 'element', 'paragraph' )\n\t *\t\tobj.is( 'text' ); // true for text node, false for element and document fragment\n\t *\t\tobj.is( 'textProxy' ); // true for text proxy object\n\t *\n\t * @method #is\n\t * @param {'element'|'rootElement'|'text'|'textProxy'|'documentFragment'} type\n\t * @returns {Boolean}\n\t */\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/node.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/nodelist\n */\n\nimport Node from './node';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/**\n * Provides an interface to operate on a list of {@link module:engine/model/node~Node nodes}. `NodeList` is used internally\n * in classes like {@link module:engine/model/element~Element Element}\n * or {@link module:engine/model/documentfragment~DocumentFragment DocumentFragment}.\n */\nexport default class NodeList {\n\t/**\n\t * Creates an empty node list.\n\t *\n\t * @param {Iterable.<module:engine/model/node~Node>} nodes Nodes contained in this node list.\n\t */\n\tconstructor( nodes ) {\n\t\t/**\n\t\t * Nodes contained in this node list.\n\t\t *\n\t\t * @private\n\t\t * @member {Array.<module:engine/model/node~Node>}\n\t\t */\n\t\tthis._nodes = [];\n\n\t\tif ( nodes ) {\n\t\t\tthis.insertNodes( 0, nodes );\n\t\t}\n\t}\n\n\t/**\n\t * Returns an iterator that iterates over all nodes contained inside this node list.\n\t *\n\t * @returns {Iterator.<module:engine/model/node~Node>}\n\t */\n\t[ Symbol.iterator ]() {\n\t\treturn this._nodes[ Symbol.iterator ]();\n\t}\n\n\t/**\n\t * Number of nodes contained inside this node list.\n\t *\n\t * @readonly\n\t * @type {Number}\n\t */\n\tget length() {\n\t\treturn this._nodes.length;\n\t}\n\n\t/**\n\t * Sum of {@link module:engine/model/node~Node#offsetSize offset sizes} of all nodes contained inside this node list.\n\t *\n\t * @readonly\n\t * @type {Number}\n\t */\n\tget maxOffset() {\n\t\treturn this._nodes.reduce( ( sum, node ) => sum + node.offsetSize, 0 );\n\t}\n\n\t/**\n\t * Gets the node at the given index. Returns `null` if incorrect index was passed.\n\t *\n\t * @param {Number} index Index of node.\n\t * @returns {module:engine/model/node~Node|null} Node at given index.\n\t */\n\tgetNode( index ) {\n\t\treturn this._nodes[ index ] || null;\n\t}\n\n\t/**\n\t * Returns an index of the given node. Returns `null` if given node is not inside this node list.\n\t *\n\t * @param {module:engine/model/node~Node} node Child node to look for.\n\t * @returns {Number|null} Child node's index.\n\t */\n\tgetNodeIndex( node ) {\n\t\tconst index = this._nodes.indexOf( node );\n\n\t\treturn index == -1 ? null : index;\n\t}\n\n\t/**\n\t * Returns the starting offset of given node. Starting offset is equal to the sum of\n\t * {module:engine/model/node~Node#offsetSize offset sizes} of all nodes that are before this node in this node list.\n\t *\n\t * @param {module:engine/model/node~Node} node Node to look for.\n\t * @returns {Number|null} Node's starting offset.\n\t */\n\tgetNodeStartOffset( node ) {\n\t\tconst index = this.getNodeIndex( node );\n\n\t\treturn index === null ? null : this._nodes.slice( 0, index ).reduce( ( sum, node ) => sum + node.offsetSize, 0 );\n\t}\n\n\t/**\n\t * Converts index to offset in node list.\n\t *\n\t * Returns starting offset of a node that is at given index. Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError}\n\t * `model-nodelist-index-out-of-bounds` if given index is less than `0` or more than {@link #length}.\n\t *\n\t * @param {Number} index Node's index.\n\t * @returns {Number} Node's starting offset.\n\t */\n\tindexToOffset( index ) {\n\t\tif ( index == this._nodes.length ) {\n\t\t\treturn this.maxOffset;\n\t\t}\n\n\t\tconst node = this._nodes[ index ];\n\n\t\tif ( !node ) {\n\t\t\t/**\n\t\t\t * Given index cannot be found in the node list.\n\t\t\t *\n\t\t\t * @error nodelist-index-out-of-bounds\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'model-nodelist-index-out-of-bounds: Given index cannot be found in the node list.' );\n\t\t}\n\n\t\treturn this.getNodeStartOffset( node );\n\t}\n\n\t/**\n\t * Converts offset in node list to index.\n\t *\n\t * Returns index of a node that occupies given offset. Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError}\n\t * `model-nodelist-offset-out-of-bounds` if given offset is less than `0` or more than {@link #maxOffset}.\n\t *\n\t * @param {Number} offset Offset to look for.\n\t * @returns {Number} Index of a node that occupies given offset.\n\t */\n\toffsetToIndex( offset ) {\n\t\tlet totalOffset = 0;\n\n\t\tfor ( let node of this._nodes ) {\n\t\t\tif ( offset >= totalOffset && offset < totalOffset + node.offsetSize  ) {\n\t\t\t\treturn this.getNodeIndex( node );\n\t\t\t}\n\n\t\t\ttotalOffset += node.offsetSize;\n\t\t}\n\n\t\tif ( totalOffset != offset ) {\n\t\t\t/**\n\t\t\t * Given offset cannot be found in the node list.\n\t\t\t *\n\t\t\t * @error nodelist-offset-out-of-bounds\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'model-nodelist-offset-out-of-bounds: Given offset cannot be found in the node list.' );\n\t\t}\n\n\t\treturn this.length;\n\t}\n\n\t/**\n\t * Inserts given nodes at given index.\n\t *\n\t * @param {Number} index Index at which nodes should be inserted.\n\t * @param {Iterable.<module:engine/model/node~Node>} nodes Nodes to be inserted.\n\t */\n\tinsertNodes( index, nodes ) {\n\t\t// Validation.\n\t\tfor ( let node of nodes ) {\n\t\t\tif ( !( node instanceof Node ) ) {\n\t\t\t\t/**\n\t\t\t\t * Trying to insert an object which is not a Node instance.\n\t\t\t\t *\n\t\t\t\t * @error nodelist-insertNodes-not-node\n\t\t\t\t */\n\t\t\t\tthrow new CKEditorError( 'model-nodelist-insertNodes-not-node: Trying to insert an object which is not a Node instance.' );\n\t\t\t}\n\t\t}\n\n\t\tthis._nodes.splice( index, 0, ...nodes );\n\t}\n\n\t/**\n\t * Removes one or more nodes starting at the given index.\n\t *\n\t * @param {Number} indexStart Index of the first node to remove.\n\t * @param {Number} [howMany=1] Number of nodes to remove.\n\t * @returns {Array.<module:engine/model/node~Node>} Array containing removed nodes.\n\t */\n\tremoveNodes( indexStart, howMany = 1 ) {\n\t\treturn this._nodes.splice( indexStart, howMany );\n\t}\n\n\t/**\n\t * Converts `NodeList` instance to an array containing nodes that were inserted in the node list. Nodes\n\t * are also converted to their plain object representation.\n\t *\n\t * @returns {Array.<module:engine/model/node~Node>} `NodeList` instance converted to `Array`.\n\t */\n\ttoJSON() {\n\t\treturn this._nodes.map( ( node ) => node.toJSON() );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/nodelist.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/operation/attributeoperation\n */\n\nimport Operation from './operation';\nimport Range from '../range';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\nimport writer from '../writer';\nimport isEqual from '@ckeditor/ckeditor5-utils/src/lib/lodash/isEqual';\n\n/**\n * Operation to change nodes' attribute.\n *\n * Using this class you can add, remove or change value of the attribute.\n *\n * @extends module:engine/model/operation/operation~Operation\n */\nexport default class AttributeOperation extends Operation {\n\t/**\n\t * Creates an operation that changes, removes or adds attributes.\n\t *\n\t * If only `newValue` is set, attribute will be added on a node. Note that all nodes in operation's range must not\n\t * have an attribute with the same key as the added attribute.\n\t *\n\t * If only `oldValue` is set, then attribute with given key will be removed. Note that all nodes in operation's range\n\t * must have an attribute with that key added.\n\t *\n\t * If both `newValue` and `oldValue` are set, then the operation will change the attribute value. Note that all nodes in\n\t * operation's ranges must already have an attribute with given key and `oldValue` as value\n\t *\n\t * @param {module:engine/model/range~Range} range Range on which the operation should be applied.\n\t * @param {String} key Key of an attribute to change or remove.\n\t * @param {*} oldValue Old value of the attribute with given key or `null`, if attribute was not set before.\n\t * @param {*} newValue New value of the attribute with given key or `null`, if operation should remove attribute.\n\t * @param {Number} baseVersion {@link module:engine/model/document~Document#version} on which the operation can be applied.\n\t */\n\tconstructor( range, key, oldValue, newValue, baseVersion ) {\n\t\tsuper( baseVersion );\n\n\t\t/**\n\t\t * Range on which operation should be applied.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/model/range~Range}\n\t\t */\n\t\tthis.range = Range.createFromRange( range );\n\n\t\t/**\n\t\t * Key of an attribute to change or remove.\n\t\t *\n\t\t * @readonly\n\t\t * @member {String}\n\t\t */\n\t\tthis.key = key;\n\n\t\t/**\n\t\t * Old value of the attribute with given key or `null`, if attribute was not set before.\n\t\t *\n\t\t * @readonly\n\t\t * @member {*}\n\t\t */\n\t\tthis.oldValue = oldValue === undefined ? null : oldValue;\n\n\t\t/**\n\t\t * New value of the attribute with given key or `null`, if operation should remove attribute.\n\t\t *\n\t\t * @readonly\n\t\t * @member {*}\n\t\t */\n\t\tthis.newValue = newValue === undefined ? null : newValue;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tget type() {\n\t\tif ( this.oldValue === null ) {\n\t\t\treturn 'addAttribute';\n\t\t} else if ( this.newValue === null ) {\n\t\t\treturn 'removeAttribute';\n\t\t} else {\n\t\t\treturn 'changeAttribute';\n\t\t}\n\t}\n\n\t/**\n\t * @inheritDoc\n\t * @returns {module:engine/model/operation/attributeoperation~AttributeOperation}\n\t */\n\tclone() {\n\t\treturn new AttributeOperation( this.range, this.key, this.oldValue, this.newValue, this.baseVersion );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t * @returns {module:engine/model/operation/attributeoperation~AttributeOperation}\n\t */\n\tgetReversed() {\n\t\treturn new AttributeOperation( this.range, this.key, this.newValue, this.oldValue, this.baseVersion + 1 );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\t_execute() {\n\t\t// Validation.\n\t\tfor ( let item of this.range.getItems() ) {\n\t\t\tif ( this.oldValue !== null && !isEqual( item.getAttribute( this.key ), this.oldValue ) ) {\n\t\t\t\t/**\n\t\t\t\t * Changed node has different attribute value than operation's old attribute value.\n\t\t\t\t *\n\t\t\t\t * @error operation-attribute-wrong-old-value\n\t\t\t\t * @param {module:engine/model/item~Item} item\n\t\t\t\t * @param {String} key\n\t\t\t\t * @param {*} value\n\t\t\t\t */\n\t\t\t\tthrow new CKEditorError(\n\t\t\t\t\t'attribute-operation-wrong-old-value: Changed node has different attribute value than operation\\'s old attribute value.',\n\t\t\t\t\t{ item: item, key: this.key, value: this.oldValue }\n\t\t\t\t);\n\t\t\t}\n\n\t\t\tif ( this.oldValue === null && this.newValue !== null && item.hasAttribute( this.key ) ) {\n\t\t\t\t/**\n\t\t\t\t * The attribute with given key already exists for the given node.\n\t\t\t\t *\n\t\t\t\t * @error attribute-operation-attribute-exists\n\t\t\t\t * @param {module:engine/model/node~Node} node\n\t\t\t\t * @param {String} key\n\t\t\t\t */\n\t\t\t\tthrow new CKEditorError(\n\t\t\t\t\t'attribute-operation-attribute-exists: The attribute with given key already exists.',\n\t\t\t\t\t{ node: item, key: this.key }\n\t\t\t\t);\n\t\t\t}\n\n\t\t\t// If value to set is same as old value, don't do anything.\n\t\t\t// By returning `undefined`, this operation will be seen as `NoOperation` - that means\n\t\t\t// that it won't generate any events, etc. `AttributeOperation` with such parameters may be\n\t\t\t// a result of operational transformation.\n\t\t\tif ( isEqual( this.oldValue, this.newValue ) ) {\n\t\t\t\treturn;\n\t\t\t}\n\t\t}\n\n\t\t// Execution.\n\t\twriter.setAttribute( this.range, this.key, this.newValue );\n\n\t\treturn { range: this.range, key: this.key, oldValue: this.oldValue, newValue: this.newValue };\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.operation.AttributeOperation';\n\t}\n\n\t/**\n\t * Creates `AttributeOperation` object from deserilized object, i.e. from parsed JSON string.\n\t *\n\t * @param {Object} json Deserialized JSON object.\n\t * @param {module:engine/model/document~Document} document Document on which this operation will be applied.\n\t * @returns {module:engine/model/operation/attributeoperation~AttributeOperation}\n\t */\n\tstatic fromJSON( json, document ) {\n\t\treturn new AttributeOperation( Range.fromJSON( json.range, document ), json.key, json.oldValue, json.newValue, json.baseVersion );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/operation/attributeoperation.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/operation/nooperation\n */\n\nimport Operation from './operation';\n\n/**\n * Operation which is doing nothing (\"empty operation\", \"do-nothing operation\", \"noop\"). This is an operation,\n * which when executed does not change the tree model. It still has some parameters defined for transformation purposes.\n *\n * In most cases this operation is a result of transforming operations. When transformation returns\n * {@link module:engine/model/operation/nooperation~NoOperation} it means that changes done by the transformed operation\n * have already been applied.\n *\n * @extends module:engine/model/operation/operation~Operation\n */\nexport default class NoOperation extends Operation {\n\t/**\n\t * @inheritDoc\n\t * @returns {module:engine/model/operation/nooperation~NoOperation}\n\t */\n\tclone() {\n\t\treturn new NoOperation( this.baseVersion );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t * @returns {module:engine/model/operation/nooperation~NoOperation}\n\t */\n\tgetReversed() {\n\t\treturn new NoOperation( this.baseVersion + 1 );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\t_execute() {\n\t\t// Do nothing.\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.operation.NoOperation';\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/operation/nooperation.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/selection\n */\n\nimport Position from './position';\nimport Element from './element';\nimport Range from './range';\nimport EmitterMixin from '@ckeditor/ckeditor5-utils/src/emittermixin';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\nimport toMap from '@ckeditor/ckeditor5-utils/src/tomap';\nimport mapsEqual from '@ckeditor/ckeditor5-utils/src/mapsequal';\n\n/**\n * `Selection` is a group of {@link module:engine/model/range~Range ranges} which has a direction specified by\n * {@link module:engine/model/selection~Selection#anchor anchor} and {@link module:engine/model/selection~Selection#focus focus}.\n * Additionally, `Selection` may have it's own attributes.\n */\nexport default class Selection {\n\t/**\n\t * Creates an empty selection.\n\t */\n\tconstructor() {\n\t\t/**\n\t\t * Specifies whether the last added range was added as a backward or forward range.\n\t\t *\n\t\t * @private\n\t\t * @member {Boolean}\n\t\t */\n\t\tthis._lastRangeBackward = false;\n\n\t\t/**\n\t\t * Stores selection ranges.\n\t\t *\n\t\t * @protected\n\t\t * @member {Array.<module:engine/model/range~Range>}\n\t\t */\n\t\tthis._ranges = [];\n\n\t\t/**\n\t\t * List of attributes set on current selection.\n\t\t *\n\t\t * @protected\n\t\t * @member {Map} module:engine/model/selection~Selection#_attrs\n\t\t */\n\t\tthis._attrs = new Map();\n\t}\n\n\t/**\n\t * Selection anchor. Anchor may be described as a position where the most recent part of the selection starts.\n\t * Together with {@link #focus} they define the direction of selection, which is important\n\t * when expanding/shrinking selection. Anchor is always {@link module:engine/model/range~Range#start start} or\n\t * {@link module:engine/model/range~Range#end end} position of the most recently added range.\n\t *\n\t * Is set to `null` if there are no ranges in selection.\n\t *\n\t * @see #focus\n\t * @readonly\n\t * @type {module:engine/model/position~Position|null}\n\t */\n\tget anchor() {\n\t\tif ( this._ranges.length > 0 ) {\n\t\t\tconst range = this._ranges[ this._ranges.length - 1 ];\n\n\t\t\treturn this._lastRangeBackward ? range.end : range.start;\n\t\t}\n\n\t\treturn null;\n\t}\n\n\t/**\n\t * Selection focus. Focus is a position where the selection ends.\n\t *\n\t * Is set to `null` if there are no ranges in selection.\n\t *\n\t * @see #anchor\n\t * @readonly\n\t * @type {module:engine/model/position~Position|null}\n\t */\n\tget focus() {\n\t\tif ( this._ranges.length > 0 ) {\n\t\t\tconst range = this._ranges[ this._ranges.length - 1 ];\n\n\t\t\treturn this._lastRangeBackward ? range.start : range.end;\n\t\t}\n\n\t\treturn null;\n\t}\n\n\t/**\n\t * Returns whether the selection is collapsed. Selection is collapsed when there is exactly one range which is\n\t * collapsed.\n\t *\n\t * @readonly\n\t * @type {Boolean}\n\t */\n\tget isCollapsed() {\n\t\tconst length = this._ranges.length;\n\n\t\tif ( length === 1 ) {\n\t\t\treturn this._ranges[ 0 ].isCollapsed;\n\t\t} else {\n\t\t\treturn false;\n\t\t}\n\t}\n\n\t/**\n\t * Returns number of ranges in selection.\n\t *\n\t * @type {Number}\n\t */\n\tget rangeCount() {\n\t\treturn this._ranges.length;\n\t}\n\n\t/**\n\t * Specifies whether the {@link #focus}\n\t * precedes {@link #anchor}.\n\t *\n\t * @type {Boolean}\n\t */\n\tget isBackward() {\n\t\treturn !this.isCollapsed && this._lastRangeBackward;\n\t}\n\n\t/**\n\t * Checks whether this selection is equal to given selection. Selections are equal if they have same directions,\n\t * same number of ranges and all ranges from one selection equal to a range from other selection.\n\t *\n\t * @param {module:engine/model/selection~Selection} otherSelection Selection to compare with.\n\t * @returns {Boolean} `true` if selections are equal, `false` otherwise.\n\t */\n\tisEqual( otherSelection ) {\n\t\tif ( this.rangeCount != otherSelection.rangeCount ) {\n\t\t\treturn false;\n\t\t} else if ( this.rangeCount === 0 ) {\n\t\t\treturn true;\n\t\t}\n\n\t\tif ( !this.anchor.isEqual( otherSelection.anchor ) || !this.focus.isEqual( otherSelection.focus ) ) {\n\t\t\treturn false;\n\t\t}\n\n\t\tfor ( let thisRange of this._ranges ) {\n\t\t\tlet found = false;\n\n\t\t\tfor ( let otherRange of otherSelection._ranges ) {\n\t\t\t\tif ( thisRange.isEqual( otherRange ) ) {\n\t\t\t\t\tfound = true;\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tif ( !found ) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t}\n\n\t\treturn true;\n\t}\n\n\t/**\n\t * Returns an iterator that iterates over copies of selection ranges.\n\t *\n\t * @returns {Iterator.<module:engine/model/range~Range>}\n\t */\n\t*getRanges() {\n\t\tfor ( let range of this._ranges ) {\n\t\t\tyield Range.createFromRange( range );\n\t\t}\n\t}\n\n\t/**\n\t * Returns a copy of the first range in the selection.\n\t * irst range is the one which {@link module:engine/model/range~Range#start start} position\n\t * {@link module:engine/model/position~Position#isBefore is before} start position of all other ranges\n\t * (not to confuse with the first range added to the selection).\n\t *\n\t * Returns `null` if there are no ranges in selection.\n\t *\n\t * @returns {module:engine/model/range~Range|null}\n\t */\n\tgetFirstRange() {\n\t\tlet first = null;\n\n\t\tfor ( let range of this._ranges ) {\n\t\t\tif ( !first || range.start.isBefore( first.start ) ) {\n\t\t\t\tfirst = range;\n\t\t\t}\n\t\t}\n\n\t\treturn first ? Range.createFromRange( first ) : null;\n\t}\n\n\t/**\n\t * Returns a copy of the last range in the selection.\n\t * Last range is the one which {@link module:engine/model/range~Range#end end} position\n\t * {@link module:engine/model/position~Position#isAfter is after} end position of all other ranges (not to confuse with the range most\n\t * recently added to the selection).\n\t *\n\t * Returns `null` if there are no ranges in selection.\n\t *\n\t * @returns {module:engine/model/range~Range|null}\n\t */\n\tgetLastRange() {\n\t\tlet last = null;\n\n\t\tfor ( let range of this._ranges ) {\n\t\t\tif ( !last || range.end.isAfter( last.end ) ) {\n\t\t\t\tlast = range;\n\t\t\t}\n\t\t}\n\n\t\treturn last ? Range.createFromRange( last ) : null;\n\t}\n\n\t/**\n\t * Returns the first position in the selection.\n\t * First position is the position that {@link module:engine/model/position~Position#isBefore is before}\n\t * any other position in the selection.\n\t *\n\t * Returns `null` if there are no ranges in selection.\n\t *\n\t * @returns {module:engine/model/position~Position|null}\n\t */\n\tgetFirstPosition() {\n\t\tconst first = this.getFirstRange();\n\n\t\treturn first ? Position.createFromPosition( first.start ) : null;\n\t}\n\n\t/**\n\t * Returns the last position in the selection.\n\t * Last position is the position that {@link module:engine/model/position~Position#isAfter is after}\n\t * any other position in the selection.\n\t *\n\t * Returns `null` if there are no ranges in selection.\n\t *\n\t * @returns {module:engine/model/position~Position|null}\n\t */\n\tgetLastPosition() {\n\t\tconst lastRange = this.getLastRange();\n\n\t\treturn lastRange ? Position.createFromPosition( lastRange.end ) : null;\n\t}\n\n\t/**\n\t * Adds a range to this selection. Added range is copied. This means that passed range is not saved in `Selection`\n\t * instance and operating on it will not change `Selection` state.\n\t *\n\t * Accepts a flag describing in which way the selection is made - passed range might be selected from\n\t * {@link module:engine/model/range~Range#start start} to {@link module:engine/model/range~Range#end end}\n\t * or from {@link module:engine/model/range~Range#end end}\n\t * to {@link module:engine/model/range~Range#start start}.\n\t * The flag is used to set {@link #anchor} and\n\t * {@link #focus} properties.\n\t *\n\t * @fires change:range\n\t * @param {module:engine/model/range~Range} range Range to add.\n\t * @param {Boolean} [isBackward=false] Flag describing if added range was selected forward - from start to end (`false`)\n\t * or backward - from end to start (`true`).\n\t */\n\taddRange( range, isBackward = false ) {\n\t\tthis._pushRange( range );\n\t\tthis._lastRangeBackward = !!isBackward;\n\n\t\tthis.fire( 'change:range', { directChange: true } );\n\t}\n\n\t/**\n\t * Removes all ranges that were added to the selection.\n\t *\n\t * @fires change:range\n\t */\n\tremoveAllRanges() {\n\t\tif ( this._ranges.length > 0 ) {\n\t\t\tthis._removeAllRanges();\n\t\t\tthis.fire( 'change:range', { directChange: true } );\n\t\t}\n\t}\n\n\t/**\n\t * Replaces all ranges that were added to the selection with given array of ranges. Last range of the array\n\t * is treated like the last added range and is used to set {@link module:engine/model/selection~Selection#anchor} and\n\t * {@link module:engine/model/selection~Selection#focus}. Accepts a flag describing in which direction the selection is made\n\t * (see {@link module:engine/model/selection~Selection#addRange}).\n\t *\n\t * @fires change:range\n\t * @param {Iterable.<module:engine/model/range~Range>} newRanges Ranges to set.\n\t * @param {Boolean} [isLastBackward=false] Flag describing if last added range was selected forward - from start to end (`false`)\n\t * or backward - from end to start (`true`).\n\t */\n\tsetRanges( newRanges, isLastBackward = false ) {\n\t\tnewRanges = Array.from( newRanges );\n\n\t\t// Check whether there is any range in new ranges set that is different than all already added ranges.\n\t\tconst anyNewRange = newRanges.some( ( newRange ) => {\n\t\t\tif ( !( newRange instanceof Range ) ) {\n\t\t\t\tthrow new CKEditorError( 'model-selection-added-not-range: Trying to add an object that is not an instance of Range.' );\n\t\t\t}\n\n\t\t\treturn this._ranges.every( ( oldRange ) => {\n\t\t\t\treturn !oldRange.isEqual( newRange );\n\t\t\t} );\n\t\t} );\n\n\t\t// Don't do anything if nothing changed.\n\t\tif ( newRanges.length === this._ranges.length && !anyNewRange ) {\n\t\t\treturn;\n\t\t}\n\n\t\tthis._removeAllRanges();\n\n\t\tfor ( let range of newRanges ) {\n\t\t\tthis._pushRange( range );\n\t\t}\n\n\t\tthis._lastRangeBackward = !!isLastBackward;\n\n\t\tthis.fire( 'change:range', { directChange: true } );\n\t}\n\n\t/**\n\t * Sets this selection's ranges and direction to the ranges and direction of the given selection.\n\t *\n\t * @param {module:engine/model/selection~Selection} otherSelection\n\t */\n\tsetTo( otherSelection ) {\n\t\tthis.setRanges( otherSelection.getRanges(), otherSelection.isBackward );\n\t}\n\n\t/**\n\t * Sets collapsed selection in the specified location.\n\t *\n\t * The location can be specified in the same form as {@link module:engine/model/position~Position.createAt} parameters.\n\t *\n\t * @fires change:range\n\t * @param {module:engine/model/item~Item|module:engine/model/position~Position} itemOrPosition\n\t * @param {Number|'end'|'before'|'after'} [offset=0] Offset or one of the flags. Used only when\n\t * first parameter is a {@link module:engine/model/item~Item model item}.\n\t */\n\tcollapse( itemOrPosition, offset ) {\n\t\tconst pos = Position.createAt( itemOrPosition, offset );\n\t\tconst range = new Range( pos, pos );\n\n\t\tthis.setRanges( [ range ] );\n\t}\n\n\t/**\n\t * Collapses selection to the selection's {@link module:engine/model/selection~Selection#getFirstPosition first position}.\n\t * All ranges, besides the collapsed one, will be removed. Nothing will change if there are no ranges stored\n\t * inside selection.\n\t *\n\t * @fires change\n\t */\n\tcollapseToStart() {\n\t\tconst startPosition = this.getFirstPosition();\n\n\t\tif ( startPosition !== null ) {\n\t\t\tthis.setRanges( [ new Range( startPosition, startPosition ) ] );\n\t\t}\n\t}\n\n\t/**\n\t * Collapses selection to the selection's {@link module:engine/model/selection~Selection#getLastPosition last position}.\n\t * All ranges, besides the collapsed one, will be removed. Nothing will change if there are no ranges stored\n\t * inside selection.\n\t *\n\t * @fires change\n\t */\n\tcollapseToEnd() {\n\t\tconst endPosition = this.getLastPosition();\n\n\t\tif ( endPosition !== null ) {\n\t\t\tthis.setRanges( [ new Range( endPosition, endPosition ) ] );\n\t\t}\n\t}\n\n\t/**\n\t * Sets {@link module:engine/model/selection~Selection#focus} to the specified location.\n\t *\n\t * The location can be specified in the same form as {@link module:engine/model/position~Position.createAt} parameters.\n\t *\n\t * @fires change:range\n\t * @param {module:engine/model/item~Item|module:engine/model/position~Position} itemOrPosition\n\t * @param {Number|'end'|'before'|'after'} [offset=0] Offset or one of the flags. Used only when\n\t * first parameter is a {@link module:engine/model/item~Item model item}.\n\t */\n\tsetFocus( itemOrPosition, offset ) {\n\t\tif ( this.anchor === null ) {\n\t\t\t/**\n\t\t\t * Cannot set selection focus if there are no ranges in selection.\n\t\t\t *\n\t\t\t * @error model-selection-setFocus-no-ranges\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'model-selection-setFocus-no-ranges: Cannot set selection focus if there are no ranges in selection.' );\n\t\t}\n\n\t\tconst newFocus = Position.createAt( itemOrPosition, offset );\n\n\t\tif ( newFocus.compareWith( this.focus ) == 'same' ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst anchor = this.anchor;\n\n\t\tif ( this._ranges.length ) {\n\t\t\tthis._popRange();\n\t\t}\n\n\t\tif ( newFocus.compareWith( anchor ) == 'before' ) {\n\t\t\tthis.addRange( new Range( newFocus, anchor ), true );\n\t\t} else {\n\t\t\tthis.addRange( new Range( anchor, newFocus ) );\n\t\t}\n\t}\n\n\t/**\n\t * Gets an attribute value for given key or `undefined` if that attribute is not set on the selection.\n\t *\n\t * @param {String} key Key of attribute to look for.\n\t * @returns {*} Attribute value or `undefined`.\n\t */\n\tgetAttribute( key ) {\n\t\treturn this._attrs.get( key );\n\t}\n\n\t/**\n\t * Returns iterator that iterates over this selection's attributes.\n\t *\n\t * Attributes are returned as arrays containing two items. First one is attribute key and second is attribute value.\n\t * This format is accepted by native `Map` object and also can be passed in `Node` constructor.\n\t *\n\t * @returns {Iterable.<*>}\n\t */\n\tgetAttributes() {\n\t\treturn this._attrs.entries();\n\t}\n\n\t/**\n\t * Returns iterator that iterates over this selection's attribute keys.\n\t *\n\t * @returns {Iterator.<String>}\n\t */\n\tgetAttributeKeys() {\n\t\treturn this._attrs.keys();\n\t}\n\n\t/**\n\t * Checks if the selection has an attribute for given key.\n\t *\n\t * @param {String} key Key of attribute to check.\n\t * @returns {Boolean} `true` if attribute with given key is set on selection, `false` otherwise.\n\t */\n\thasAttribute( key ) {\n\t\treturn this._attrs.has( key );\n\t}\n\n\t/**\n\t * Removes all attributes from the selection.\n\t *\n\t * If there were any attributes in selection, fires the {@link #event:change} event with\n\t * removed attributes' keys.\n\t *\n\t * @fires change:attribute\n\t */\n\tclearAttributes() {\n\t\tif ( this._attrs.size > 0 ) {\n\t\t\tconst attributeKeys = Array.from( this._attrs.keys() );\n\t\t\tthis._attrs.clear();\n\n\t\t\tthis.fire( 'change:attribute', { attributeKeys, directChange: true } );\n\t\t}\n\t}\n\n\t/**\n\t * Removes an attribute with given key from the selection.\n\t *\n\t * If given attribute was set on the selection, fires the {@link #event:change} event with\n\t * removed attribute key.\n\t *\n\t * @fires change:attribute\n\t * @param {String} key Key of attribute to remove.\n\t */\n\tremoveAttribute( key ) {\n\t\tif ( this.hasAttribute( key ) ) {\n\t\t\tthis._attrs.delete( key );\n\n\t\t\tthis.fire( 'change:attribute', { attributeKeys: [ key ], directChange: true } );\n\t\t}\n\t}\n\n\t/**\n\t * Sets attribute on the selection. If attribute with the same key already is set, it's value is overwritten.\n\t *\n\t * If the attribute value has changed, fires the {@link #event:change} event with\n\t * the attribute key.\n\t *\n\t * @fires change:attribute\n\t * @param {String} key Key of attribute to set.\n\t * @param {*} value Attribute value.\n\t */\n\tsetAttribute( key, value ) {\n\t\tif ( this.getAttribute( key ) !== value ) {\n\t\t\tthis._attrs.set( key, value );\n\n\t\t\tthis.fire( 'change:attribute', { attributeKeys: [ key ], directChange: true } );\n\t\t}\n\t}\n\n\t/**\n\t * Removes all attributes from the selection and sets given attributes.\n\t *\n\t * If given set of attributes is different than set of attributes already added to selection, fires\n\t * {@link #event:change change event} with keys of attributes that changed.\n\t *\n\t * @fires event:change:attribute\n\t * @param {Iterable|Object} attrs Iterable object containing attributes to be set.\n\t */\n\tsetAttributesTo( attrs ) {\n\t\tattrs = toMap( attrs );\n\n\t\tif ( !mapsEqual( attrs, this._attrs ) ) {\n\t\t\t// Create a set from keys of old and new attributes.\n\t\t\tconst changed = new Set( Array.from( attrs.keys() ).concat( Array.from( this._attrs.keys() ) ) );\n\n\t\t\tfor ( let [ key, value ] of attrs ) {\n\t\t\t\t// If the attribute remains unchanged, remove it from changed set.\n\t\t\t\tif ( this._attrs.get( key ) === value ) {\n\t\t\t\t\tchanged.delete( key );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tthis._attrs = attrs;\n\n\t\t\tthis.fire( 'change:attribute', { attributeKeys: Array.from( changed ), directChange: true } );\n\t\t}\n\t}\n\n\t/**\n\t * Returns the selected element. {@link module:engine/model/element~Element Element} is considered as selected if there is only\n\t * one range in the selection, and that range contains exactly one element.\n\t * Returns `null` if there is no selected element.\n\t *\n\t * @returns {module:engine/model/element~Element|null}\n\t */\n\tgetSelectedElement() {\n\t\tif ( this.rangeCount !== 1 ) {\n\t\t\treturn null;\n\t\t}\n\n\t\tconst range = this.getFirstRange();\n\t\tconst nodeAfterStart = range.start.nodeAfter;\n\t\tconst nodeBeforeEnd = range.end.nodeBefore;\n\n\t\treturn ( nodeAfterStart instanceof Element && nodeAfterStart == nodeBeforeEnd ) ? nodeAfterStart : null;\n\t}\n\n\t/**\n\t * Gets elements of type \"block\" touched by the selection.\n\t *\n\t * This method's result can be used for example to apply block styling to all blocks covered by this selection.\n\t *\n\t * *Note:* `getSelectedBlocks` always returns the deepest block.\n\t *\n\t * In this case the function will return exactly all 3 paragraphs:\n\t *\n\t *\t\t<paragraph>[a</paragraph>\n\t *\t\t<quote>\n\t *\t\t\t<paragraph>b</paragraph>\n\t *\t\t</quote>\n\t *\t\t<paragraph>c]d</paragraph>\n\t *\n\t * In this case the paragraph will also be returned, despite the collapsed selection:\n\t *\n\t *\t\t<paragraph>[]a</paragraph>\n\t *\n\t * @returns {Iterator.<module:engine/model/element~Element>}\n\t */\n\t*getSelectedBlocks() {\n\t\tconst visited = new WeakSet();\n\n\t\tfor ( const range of this.getRanges() ) {\n\t\t\tconst startBlock = getParentBlock( range.start, visited );\n\n\t\t\tif ( startBlock ) {\n\t\t\t\tyield startBlock;\n\t\t\t}\n\n\t\t\tfor ( const value of range.getWalker() ) {\n\t\t\t\tif ( value.type == 'elementEnd' && isUnvisitedBlockContainer( value.item, visited ) ) {\n\t\t\t\t\tyield value.item;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tconst endBlock = getParentBlock( range.end, visited );\n\n\t\t\tif ( endBlock ) {\n\t\t\t\tyield endBlock;\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Creates and returns an instance of `Selection` that is a clone of given selection, meaning that it has same\n\t * ranges and same direction as this selection.\n\t *\n\t * @params {module:engine/model/selection~Selection} otherSelection Selection to be cloned.\n\t * @returns {module:engine/model/selection~Selection} `Selection` instance that is a clone of given selection.\n\t */\n\tstatic createFromSelection( otherSelection ) {\n\t\tconst selection = new this();\n\t\tselection.setTo( otherSelection );\n\n\t\treturn selection;\n\t}\n\n\t/**\n\t * Adds given range to internal {@link #_ranges ranges array}. Throws an error\n\t * if given range is intersecting with any range that is already stored in this selection.\n\t *\n\t * @protected\n\t * @param {module:engine/model/range~Range} range Range to add.\n\t */\n\t_pushRange( range ) {\n\t\tif ( !( range instanceof Range ) ) {\n\t\t\tthrow new CKEditorError( 'model-selection-added-not-range: Trying to add an object that is not an instance of Range.' );\n\t\t}\n\n\t\tthis._checkRange( range );\n\t\tthis._ranges.push( Range.createFromRange( range ) );\n\t}\n\n\t/**\n\t * Checks if given range intersects with ranges that are already in the selection. Throws an error if it does.\n\t *\n\t * @protected\n\t * @param {module:engine/model/range~Range} range Range to check.\n\t */\n\t_checkRange( range ) {\n\t\tfor ( let i = 0; i < this._ranges.length; i++ ) {\n\t\t\tif ( range.isIntersecting( this._ranges[ i ] ) ) {\n\t\t\t\t/**\n\t\t\t\t * Trying to add a range that intersects with another range from selection.\n\t\t\t\t *\n\t\t\t\t * @error selection-range-intersects\n\t\t\t\t * @param {module:engine/model/range~Range} addedRange Range that was added to the selection.\n\t\t\t\t * @param {module:engine/model/range~Range} intersectingRange Range from selection that intersects with `addedRange`.\n\t\t\t\t */\n\t\t\t\tthrow new CKEditorError(\n\t\t\t\t\t'model-selection-range-intersects: Trying to add a range that intersects with another range from selection.',\n\t\t\t\t\t{ addedRange: range, intersectingRange: this._ranges[ i ] }\n\t\t\t\t);\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Removes most recently added range from the selection.\n\t *\n\t * @protected\n\t */\n\t_popRange() {\n\t\tthis._ranges.pop();\n\t}\n\n\t/**\n\t * Deletes ranges from internal range array. Uses {@link #_popRange _popRange} to\n\t * ensure proper ranges removal.\n\t *\n\t * @private\n\t */\n\t_removeAllRanges() {\n\t\twhile ( this._ranges.length > 0 ) {\n\t\t\tthis._popRange();\n\t\t}\n\t}\n\n\t/**\n\t * @event change\n\t */\n\n\t/**\n\t * Fired whenever selection ranges are changed.\n\t *\n\t * @event change:range\n\t * @param {Boolean} directChange Specifies whether the range change was caused by direct usage of `Selection` API (`true`)\n\t * or by changes done to {@link module:engine/model/document~Document model document}\n\t * using {@link module:engine/model/batch~Batch Batch} API (`false`).\n\t */\n\n\t/**\n\t * Fired whenever selection attributes are changed.\n\t *\n\t * @event change:attribute\n\t * @param {Boolean} directChange Specifies whether the attributes changed by direct usage of the Selection API (`true`)\n\t * or by changes done to the {@link module:engine/model/document~Document model document}\n\t * using the {@link module:engine/model/batch~Batch Batch} API (`false`).\n\t * @param {Array.<String>} attributeKeys Array containing keys of attributes that changed.\n\t */\n}\n\nmix( Selection, EmitterMixin );\n\n// Checks whether the given element extends $block in the schema and has a parent (is not a root).\n// Marks it as already visited.\nfunction isUnvisitedBlockContainer( element, visited ) {\n\tif ( visited.has( element ) ) {\n\t\treturn false;\n\t}\n\n\tvisited.add( element );\n\n\t// TODO https://github.com/ckeditor/ckeditor5-engine/issues/532#issuecomment-278900072.\n\t// This should not be a `$block` check.\n\treturn element.document.schema.itemExtends( element.name, '$block' ) && element.parent;\n}\n\n// Finds the lowest element in position's ancestors which is a block.\n// Marks all ancestors as already visited to not include any of them later on.\nfunction getParentBlock( position, visited ) {\n\tconst ancestors = position.parent.getAncestors( { parentFirst: true, includeNode: true } );\n\tconst block = ancestors.find( ( element ) => isUnvisitedBlockContainer( element, visited ) );\n\n\t// Mark all ancestors of this position's parent, because find() might've stopped early and\n\t// the found block may be a child of another block.\n\tancestors.forEach( element => visited.add( element ) );\n\n\treturn block;\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/selection.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/editableelement\n */\n\nimport ContainerElement from './containerelement';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\nimport ObservableMixin from '@ckeditor/ckeditor5-utils/src/observablemixin';\n\nconst documentSymbol = Symbol( 'document' );\n\n/**\n * Editable element which can be a {@link module:engine/view/rooteditableelement~RootEditableElement root}\n * or nested editable area in the editor.\n *\n * @extends module:engine/view/containerelement~ContainerElement\n * @mixes module:utils/observablemixin~ObservaleMixin\n */\nexport default class EditableElement extends ContainerElement {\n\t/**\n\t * Creates an editable element.\n\t */\n\tconstructor( name, attrs, children ) {\n\t\tsuper( name, attrs, children );\n\n\t\t/**\n\t\t * Whether the editable is in read-write or read-only mode.\n\t\t *\n\t\t * @observable\n\t\t * @member {Boolean} module:engine/view/editableelement~EditableElement#isReadOnly\n\t\t */\n\t\tthis.set( 'isReadOnly', false );\n\n\t\t/**\n\t\t * Whether the editable is focused.\n\t\t *\n\t\t * This property updates when {@link module:engine/view/document~Document#isFocused document.isFocused} is changed and after each\n\t\t * {@link module:engine/view/document~Document#render render} method call.\n\t\t *\n\t\t * @readonly\n\t\t * @observable\n\t\t * @member {Boolean} module:engine/view/editableelement~EditableElement#isFocused\n\t\t */\n\t\tthis.set( 'isFocused', false );\n\n\t\t/**\n\t\t * The {@link module:engine/view/document~Document} which is an owner of this root.\n\t\t * Can only by set once.\n\t\t * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-editableelement-document-already-set`\n\t\t * when document is already set.\n\t\t *\n\t\t * @member {module:engine/view/document~Document} #document\n\t\t */\n\t}\n\n\tget document() {\n\t\treturn this.getCustomProperty( documentSymbol );\n\t}\n\n\tset document( document ) {\n\t\tif ( this.getCustomProperty( documentSymbol ) ) {\n\t\t\t/**\n\t\t\t * View document is already set. It can only be set once.\n\t\t\t *\n\t\t\t * @error view-editableelement-document-already-set\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'view-editableelement-document-already-set: View document is already set.' );\n\t\t}\n\n\t\tthis.setCustomProperty( documentSymbol, document );\n\n\t\tthis.bind( 'isFocused' ).to(\n\t\t\tdocument,\n\t\t\t'isFocused',\n\t\t\t( isFocused ) => isFocused && document.selection.editableElement == this\n\t\t);\n\n\t\t// Update focus state before each rendering. Rendering should not change neither the selection nor the value of\n\t\t// document.isFocused property.\n\t\tthis.listenTo( document, 'render', () => {\n\t\t\tthis.isFocused = document.isFocused && document.selection.editableElement == this;\n\t\t}, { priority: 'high' } );\n\t}\n}\n\nmix( EditableElement, ObservableMixin );\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/view/editableelement.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/node\n */\n\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\nimport EmitterMixin from '@ckeditor/ckeditor5-utils/src/emittermixin';\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\n\n/**\n * Abstract tree view node class.\n *\n * @abstract\n */\nexport default class Node {\n\t/**\n\t * Creates a tree view node.\n\t *\n\t * This is an abstract class, so this constructor should not be used directly.\n\t */\n\tconstructor() {\n\t\t/**\n\t\t * Parent element. Null by default. Set by {@link module:engine/view/element~Element#insertChildren}.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/view/element~Element|module:engine/view/documentfragment~DocumentFragment|null}\n\t\t */\n\t\tthis.parent = null;\n\t}\n\n\t/**\n\t * Index of the node in the parent element or null if the node has no parent.\n\t *\n\t * Accessing this property throws an error if this node's parent element does not contain it.\n\t * This means that view tree got broken.\n\t *\n\t * @readonly\n\t * @type {Number|null}\n\t */\n\tget index() {\n\t\tlet pos;\n\n\t\tif ( !this.parent ) {\n\t\t\treturn null;\n\t\t}\n\n\t\t// No parent or child doesn't exist in parent's children.\n\t\tif ( ( pos = this.parent.getChildIndex( this ) ) == -1 ) {\n\t\t\t/**\n\t\t\t * The node's parent does not contain this node. It means that the document tree is corrupted.\n\t\t\t *\n\t\t\t * @error view-node-not-found-in-parent\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'view-node-not-found-in-parent: The node\\'s parent does not contain this node.' );\n\t\t}\n\n\t\treturn pos;\n\t}\n\n\t/**\n\t * Node's next sibling, or `null` if it is the last child.\n\t *\n\t * @readonly\n\t * @type {module:engine/view/node~Node|null}\n\t */\n\tget nextSibling() {\n\t\tconst index = this.index;\n\n\t\treturn ( index !== null && this.parent.getChild( index + 1 ) ) || null;\n\t}\n\n\t/**\n\t * Node's previous sibling, or `null` if it is the first child.\n\t *\n\t * @readonly\n\t * @type {module:engine/view/node~Node|null}\n\t */\n\tget previousSibling() {\n\t\tconst index = this.index;\n\n\t\treturn ( index !== null && this.parent.getChild( index - 1 ) ) || null;\n\t}\n\n\t/**\n\t * Top-most ancestor of the node. If the node has no parent it is the root itself.\n\t *\n\t * @readonly\n\t * @type {module:engine/view/node~Node|module:engine/view/documentfragment~DocumentFragment}\n\t */\n\tget root() {\n\t\tlet root = this;\n\n\t\twhile ( root.parent ) {\n\t\t\troot = root.parent;\n\t\t}\n\n\t\treturn root;\n\t}\n\n\t/**\n\t * {@link module:engine/view/document~Document View document} that owns this node, or `null` if the node is inside\n\t * {@link module:engine/view/documentfragment~DocumentFragment document fragment}.\n\t *\n\t * @readonly\n\t * @type {module:engine/view/document~Document|null}\n\t */\n\tget document() {\n\t\t// Parent might be Node, null or DocumentFragment.\n\t\tif ( this.parent instanceof Node ) {\n\t\t\treturn this.parent.document;\n\t\t} else {\n\t\t\treturn null;\n\t\t}\n\t}\n\n\t/**\n\t * Returns ancestors array of this node.\n\t *\n\t * @param {Object} options Options object.\n\t * @param {Boolean} [options.includeNode=false] When set to `true` this node will be also included in parent's array.\n\t * @param {Boolean} [options.parentFirst=false] When set to `true`, array will be sorted from node's parent to root element,\n\t * otherwise root element will be the first item in the array.\n\t * @returns {Array} Array with ancestors.\n\t */\n\tgetAncestors( options = { includeNode: false, parentFirst: false } ) {\n\t\tconst ancestors = [];\n\t\tlet parent = options.includeNode ? this : this.parent;\n\n\t\twhile ( parent ) {\n\t\t\tancestors[ options.parentFirst ? 'push' : 'unshift' ]( parent );\n\t\t\tparent = parent.parent;\n\t\t}\n\n\t\treturn ancestors;\n\t}\n\n\t/**\n\t * Removes node from parent.\n\t */\n\tremove() {\n\t\tthis.parent.removeChildren( this.index );\n\t}\n\n\t/**\n\t * @param {module:engine/view/document~ChangeType} type Type of the change.\n\t * @param {module:engine/view/node~Node} node Changed node.\n\t * @fires change\n\t */\n\t_fireChange( type, node ) {\n\t\tthis.fire( 'change:' + type, node );\n\n\t\tif ( this.parent ) {\n\t\t\tthis.parent._fireChange( type, node );\n\t\t}\n\t}\n\n\t/**\n\t * Clones this node.\n\t *\n\t * @method #clone\n\t * @returns {module:engine/view/node~Node} Clone of this node.\n\t */\n\n\t/**\n\t * Checks if provided node is similar to this node.\n\t *\n\t * @method #isSimilar\n\t * @returns {Boolean} True if nodes are similar.\n\t */\n\n\t/**\n\t * Checks whether given view tree object is of given type.\n\t *\n\t * This method is useful when processing view tree objects that are of unknown type. For example, a function\n\t * may return {@link module:engine/view/documentfragment~DocumentFragment} or {@link module:engine/view/node~Node}\n\t * that can be either text node or element. This method can be used to check what kind of object is returned.\n\t *\n\t *\t\tobj.is( 'node' ); // true for any node, false for document fragment\n\t *\t\tobj.is( 'documentFragment' ); // true for document fragment, false for any node\n\t *\t\tobj.is( 'element' ); // true for any element, false for text node or document fragment\n\t *\t\tobj.is( 'element', 'p' ); // true only for element which name is 'p'\n\t *\t\tobj.is( 'p' ); // shortcut for obj.is( 'element', 'p' )\n\t *\t\tobj.is( 'text' ); // true for text node, false for element and document fragment\n\t *\n\t * @method #is\n\t * @param {'element'|'containerElement'|'attributeElement'|'emptyElement'|'uiElement'|\n\t * 'rootElement'|'documentFragment'|'text'|'textProxy'} type\n\t * @returns {Boolean}\n\t */\n}\n\n/**\n * Fired when list of {@link module:engine/view/element~Element elements} children changes.\n *\n * Change event is bubbled – it is fired on all ancestors.\n *\n * @event change:children\n * @param {module:engine/view/node~Node} Changed node.\n */\n\n/**\n * Fired when list of {@link module:engine/view/element~Element elements} attributes changes.\n *\n * Change event is bubbled – it is fired on all ancestors.\n *\n * @event change:attributes\n * @param {module:engine/view/node~Node} Changed node.\n */\n\n/**\n * Fired when {@link module:engine/view/text~Text text nodes} data changes.\n *\n * Change event is bubbled – it is fired on all ancestors.\n *\n * @event change:text\n * @param {module:engine/view/node~Node} Changed node.\n */\n\n/**\n * @event change\n */\n\nmix( Node, EmitterMixin );\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/view/node.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/selection\n */\n\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\nimport Range from './range';\nimport Position from './position';\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\nimport EmitterMixin from '@ckeditor/ckeditor5-utils/src/emittermixin';\nimport Element from './element';\n\n/**\n * Class representing selection in tree view.\n *\n * Selection can consist of {@link module:engine/view/range~Range ranges} that can be added using\n * {@link module:engine/view/selection~Selection#addRange addRange}\n * and {@link module:engine/view/selection~Selection#setRanges setRanges} methods.\n * Both methods create copies of provided ranges and store those copies internally. Further modifications to passed\n * ranges will not change selection's state.\n * Selection's ranges can be obtained via {@link module:engine/view/selection~Selection#getRanges getRanges},\n * {@link module:engine/view/selection~Selection#getFirstRange getFirstRange}\n * and {@link module:engine/view/selection~Selection#getLastRange getLastRange}\n * methods, which return copies of ranges stored inside selection. Modifications made on these copies will not change\n * selection's state. Similar situation occurs when getting {@link module:engine/view/selection~Selection#anchor anchor},\n * {@link module:engine/view/selection~Selection#focus focus}, {@link module:engine/view/selection~Selection#getFirstPosition first} and\n * {@link module:engine/view/selection~Selection#getLastPosition last} positions - all will return copies of requested positions.\n */\nexport default class Selection {\n\t/**\n\t * Creates new selection instance.\n\t */\n\tconstructor() {\n\t\t/**\n\t\t * Stores all ranges that are selected.\n\t\t *\n\t\t * @protected\n\t\t * @member {Array.<module:engine/view/range~Range>}\n\t\t */\n\t\tthis._ranges = [];\n\n\t\t/**\n\t\t * Specifies whether the last added range was added as a backward or forward range.\n\t\t *\n\t\t * @protected\n\t\t * @member {Boolean}\n\t\t */\n\t\tthis._lastRangeBackward = false;\n\n\t\t/**\n\t\t * Specifies whether selection instance is fake.\n\t\t *\n\t\t * @private\n\t\t * @member {Boolean}\n\t\t */\n\t\tthis._isFake = false;\n\n\t\t/**\n\t\t * Fake selection's label.\n\t\t *\n\t\t * @private\n\t\t * @member {String}\n\t\t */\n\t\tthis._fakeSelectionLabel = '';\n\t}\n\n\t/**\n\t * Sets this selection instance to be marked as `fake`. A fake selection does not render as browser native selection\n\t * over selected elements and is hidden to the user. This way, no native selection UI artifacts are displayed to\n\t * the user and selection over elements can be represented in other way, for example by applying proper CSS class.\n\t *\n\t * Additionally fake's selection label can be provided. It will be used to describe fake selection in DOM (and be\n\t * properly handled by screen readers).\n\t *\n\t * @fires change\n\t * @param {Boolean} [value=true] If set to true selection will be marked as `fake`.\n\t * @param {Object} [options] Additional options.\n\t * @param {String} [options.label=''] Fake selection label.\n\t */\n\tsetFake( value = true, options = {} ) {\n\t\tthis._isFake = value;\n\t\tthis._fakeSelectionLabel = value ? options.label || '' : '';\n\n\t\tthis.fire( 'change' );\n\t}\n\n\t/**\n\t * Returns true if selection instance is marked as `fake`.\n\t *\n\t * @see #setFake\n\t * @returns {Boolean}\n\t */\n\tget isFake() {\n\t\treturn this._isFake;\n\t}\n\n\t/**\n\t * Returns fake selection label.\n\t *\n\t * @see #setFake\n\t * @returns {String}\n\t */\n\tget fakeSelectionLabel() {\n\t\treturn this._fakeSelectionLabel;\n\t}\n\n\t/**\n\t * Selection anchor. Anchor may be described as a position where the selection starts. Together with\n\t * {@link #focus focus} they define the direction of selection, which is important\n\t * when expanding/shrinking selection. Anchor is always the start or end of the most recent added range.\n\t * It may be a bit unintuitive when there are multiple ranges in selection.\n\t *\n\t * @see #focus\n\t * @type {module:engine/view/position~Position}\n\t */\n\tget anchor() {\n\t\tif ( !this._ranges.length ) {\n\t\t\treturn null;\n\t\t}\n\t\tconst range = this._ranges[ this._ranges.length - 1 ];\n\t\tconst anchor = this._lastRangeBackward ? range.end : range.start;\n\n\t\treturn Position.createFromPosition( anchor );\n\t}\n\n\t/**\n\t * Selection focus. Focus is a position where the selection ends.\n\t *\n\t * @see #anchor\n\t * @type {module:engine/view/position~Position}\n\t */\n\tget focus() {\n\t\tif ( !this._ranges.length ) {\n\t\t\treturn null;\n\t\t}\n\t\tconst range = this._ranges[ this._ranges.length - 1 ];\n\t\tconst focus = this._lastRangeBackward ? range.start : range.end;\n\n\t\treturn Position.createFromPosition( focus );\n\t}\n\n\t/**\n\t * Returns whether the selection is collapsed. Selection is collapsed when there is exactly one range which is\n\t * collapsed.\n\t *\n\t * @type {Boolean}\n\t */\n\tget isCollapsed() {\n\t\treturn this.rangeCount === 1 && this._ranges[ 0 ].isCollapsed;\n\t}\n\n\t/**\n\t * Returns number of ranges in selection.\n\t *\n\t * @type {Number}\n     */\n\tget rangeCount() {\n\t\treturn this._ranges.length;\n\t}\n\n\t/**\n\t * Specifies whether the {@link #focus} precedes {@link #anchor}.\n\t *\n\t * @type {Boolean}\n\t */\n\tget isBackward() {\n\t\treturn !this.isCollapsed && this._lastRangeBackward;\n\t}\n\n\t/**\n\t * {@link module:engine/view/editableelement~EditableElement EditableElement} instance that contains this selection, or `null`\n\t * if the selection is not inside an editable element.\n\t *\n\t * @type {module:engine/view/editableelement~EditableElement|null}\n\t */\n\tget editableElement() {\n\t\tif ( this.anchor ) {\n\t\t\treturn this.anchor.editableElement;\n\t\t}\n\n\t\treturn null;\n\t}\n\n\t/**\n\t * Adds a range to the selection. Added range is copied. This means that passed range is not saved in the\n\t * selection instance and you can safely operate on it.\n\t *\n\t * Accepts a flag describing in which way the selection is made - passed range might be selected from\n\t * {@link module:engine/view/range~Range#start start} to {@link module:engine/view/range~Range#end end}\n\t * or from {@link module:engine/view/range~Range#end end} to {@link module:engine/view/range~Range#start start}.\n\t * The flag is used to set {@link #anchor anchor} and {@link #focus focus} properties.\n\t *\n\t * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-selection-range-intersects` if added range intersects\n\t * with ranges already stored in Selection instance.\n\t *\n\t * @fires change\n\t * @param {module:engine/view/range~Range} range\n\t */\n\taddRange( range, isBackward ) {\n\t\tif ( !( range instanceof Range ) ) {\n\t\t\tthrow new CKEditorError( 'view-selection-invalid-range: Invalid Range.' );\n\t\t}\n\n\t\tthis._pushRange( range );\n\t\tthis._lastRangeBackward = !!isBackward;\n\t\tthis.fire( 'change' );\n\t}\n\n\t/**\n\t * Returns an iterator that contains copies of all ranges added to the selection.\n\t *\n\t * @returns {Iterator.<module:engine/view/range~Range>}\n\t */\n\t*getRanges() {\n\t\tfor ( let range of this._ranges ) {\n\t\t\tyield Range.createFromRange( range );\n\t\t}\n\t}\n\n\t/**\n\t * Returns copy of the first range in the selection. First range is the one which\n\t * {@link module:engine/view/range~Range#start start} position {@link module:engine/view/position~Position#isBefore is before} start\n\t * position of all other ranges (not to confuse with the first range added to the selection).\n\t * Returns `null` if no ranges are added to selection.\n\t *\n\t * @returns {module:engine/view/range~Range|null}\n\t */\n\tgetFirstRange() {\n\t\tlet first = null;\n\n\t\tfor ( let range of this._ranges ) {\n\t\t\tif ( !first || range.start.isBefore( first.start ) ) {\n\t\t\t\tfirst = range;\n\t\t\t}\n\t\t}\n\n\t\treturn first ? Range.createFromRange( first ) : null;\n\t}\n\n\t/**\n\t * Returns copy of the last range in the selection. Last range is the one which {@link module:engine/view/range~Range#end end}\n\t * position {@link module:engine/view/position~Position#isAfter is after} end position of all other ranges (not to confuse\n\t * with the last range added to the selection). Returns `null` if no ranges are added to selection.\n\t *\n\t * @returns {module:engine/view/range~Range|null}\n\t */\n\tgetLastRange() {\n\t\tlet last = null;\n\n\t\tfor ( let range of this._ranges ) {\n\t\t\tif ( !last || range.end.isAfter( last.end ) ) {\n\t\t\t\tlast = range;\n\t\t\t}\n\t\t}\n\n\t\treturn last ? Range.createFromRange( last ) : null;\n\t}\n\n\t/**\n\t * Returns copy of the first position in the selection. First position is the position that\n\t * {@link module:engine/view/position~Position#isBefore is before} any other position in the selection ranges.\n\t * Returns `null` if no ranges are added to selection.\n\t *\n\t * @returns {module:engine/view/position~Position|null}\n\t */\n\tgetFirstPosition() {\n\t\tconst firstRange = this.getFirstRange();\n\n\t\treturn firstRange ? Position.createFromPosition( firstRange.start ) : null;\n\t}\n\n\t/**\n\t * Returns copy of the last position in the selection. Last position is the position that\n\t * {@link module:engine/view/position~Position#isAfter is after} any other position in the selection ranges.\n\t * Returns `null` if no ranges are added to selection.\n\t *\n\t * @returns {module:engine/view/position~Position|null}\n\t */\n\tgetLastPosition() {\n\t\tconst lastRange = this.getLastRange();\n\n\t\treturn lastRange ? Position.createFromPosition( lastRange.end ) : null;\n\t}\n\n\t/**\n\t * Checks whether, this selection is equal to given selection. Selections are equal if they have same directions,\n\t * same number of ranges and all ranges from one selection equal to a range from other selection.\n\t *\n\t * @param {module:engine/view/selection~Selection} otherSelection Selection to compare with.\n\t * @returns {Boolean} `true` if selections are equal, `false` otherwise.\n\t */\n\tisEqual( otherSelection ) {\n\t\tif ( this.isFake != otherSelection.isFake ) {\n\t\t\treturn false;\n\t\t}\n\n\t\tif ( this.isFake && this.fakeSelectionLabel != otherSelection.fakeSelectionLabel ) {\n\t\t\treturn false;\n\t\t}\n\n\t\tif ( this.rangeCount != otherSelection.rangeCount ) {\n\t\t\treturn false;\n\t\t} else if ( this.rangeCount === 0 ) {\n\t\t\treturn true;\n\t\t}\n\n\t\tif ( !this.anchor.isEqual( otherSelection.anchor ) || !this.focus.isEqual( otherSelection.focus ) ) {\n\t\t\treturn false;\n\t\t}\n\n\t\tfor ( let thisRange of this._ranges ) {\n\t\t\tlet found = false;\n\n\t\t\tfor ( let otherRange of otherSelection._ranges ) {\n\t\t\t\tif ( thisRange.isEqual( otherRange ) ) {\n\t\t\t\t\tfound = true;\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tif ( !found ) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t}\n\n\t\treturn true;\n\t}\n\n\t/**\n\t * Removes all ranges that were added to the selection.\n\t *\n\t * @fires change\n\t */\n\tremoveAllRanges() {\n\t\tif ( this._ranges.length ) {\n\t\t\tthis._ranges = [];\n\t\t\tthis.fire( 'change' );\n\t\t}\n\t}\n\n\t/**\n\t * Replaces all ranges that were added to the selection with given array of ranges. Last range of the array\n\t * is treated like the last added range and is used to set {@link #anchor anchor} and {@link #focus focus}.\n\t * Accepts a flag describing in which way the selection is made (see {@link #addRange addRange}).\n\t *\n\t * @fires change\n\t * @param {Array.<module:engine/view/range~Range>} newRanges Array of ranges to set.\n\t * @param {Boolean} [isLastBackward] Flag describing if last added range was selected forward - from start to end\n\t * (`false`) or backward - from end to start (`true`). Defaults to `false`.\n\t */\n\tsetRanges( newRanges, isLastBackward ) {\n\t\tthis._ranges = [];\n\n\t\tfor ( let range of newRanges ) {\n\t\t\tif ( !( range instanceof Range ) ) {\n\t\t\t\tthrow new CKEditorError( 'view-selection-invalid-range: Invalid Range.' );\n\t\t\t}\n\n\t\t\tthis._pushRange( range );\n\t\t}\n\n\t\tthis._lastRangeBackward = !!isLastBackward;\n\t\tthis.fire( 'change' );\n\t}\n\n\t/**\n\t * Sets this selection's ranges and direction to the ranges and direction of the given selection.\n\t *\n\t * @param {module:engine/view/selection~Selection} otherSelection\n\t */\n\tsetTo( otherSelection ) {\n\t\tthis._isFake = otherSelection._isFake;\n\t\tthis._fakeSelectionLabel = otherSelection._fakeSelectionLabel;\n\n\t\tthis.setRanges( otherSelection.getRanges(), otherSelection.isBackward );\n\t}\n\n\t/**\n\t * Sets collapsed selection in the specified location.\n\t *\n\t * The location can be specified in the same form as {@link module:engine/view/position~Position.createAt} parameters.\n\t *\n\t * @fires change\n\t * @param {module:engine/view/item~Item|module:engine/view/position~Position} itemOrPosition\n\t * @param {Number|'end'|'before'|'after'} [offset=0] Offset or one of the flags. Used only when\n\t * first parameter is a {@link module:engine/view/item~Item view item}.\n\t */\n\tcollapse( itemOrPosition, offset ) {\n\t\tconst pos = Position.createAt( itemOrPosition, offset );\n\t\tconst range = new Range( pos, pos );\n\n\t\tthis.setRanges( [ range ] );\n\t}\n\n\t/**\n\t * Collapses selection to the selection's {@link #getFirstPosition first position}.\n\t * All ranges, besides the collapsed one, will be removed. Nothing will change if there are no ranges stored\n\t * inside selection.\n\t *\n\t * @fires change\n\t */\n\tcollapseToStart() {\n\t\tconst startPosition = this.getFirstPosition();\n\n\t\tif ( startPosition !== null ) {\n\t\t\tthis.setRanges( [ new Range( startPosition, startPosition ) ] );\n\t\t}\n\t}\n\n\t/**\n\t * Collapses selection to the selection's {@link #getLastPosition last position}.\n\t * All ranges, besides the collapsed one, will be removed. Nothing will change if there are no ranges stored\n\t * inside selection.\n\t *\n\t * @fires change\n\t */\n\tcollapseToEnd() {\n\t\tconst endPosition = this.getLastPosition();\n\n\t\tif ( endPosition !== null ) {\n\t\t\tthis.setRanges( [ new Range( endPosition, endPosition ) ] );\n\t\t}\n\t}\n\n\t/**\n\t * Sets {@link #focus} to the specified location.\n\t *\n\t * The location can be specified in the same form as {@link module:engine/view/position~Position.createAt} parameters.\n\t *\n\t * @fires change:range\n\t * @param {module:engine/view/item~Item|module:engine/view/position~Position} itemOrPosition\n\t * @param {Number|'end'|'before'|'after'} [offset=0] Offset or one of the flags. Used only when\n\t * first parameter is a {@link module:engine/view/item~Item view item}.\n\t */\n\tsetFocus( itemOrPosition, offset ) {\n\t\tif ( this.anchor === null ) {\n\t\t\t/**\n\t\t\t * Cannot set selection focus if there are no ranges in selection.\n\t\t\t *\n\t\t\t * @error view-selection-setFocus-no-ranges\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'view-selection-setFocus-no-ranges: Cannot set selection focus if there are no ranges in selection.' );\n\t\t}\n\n\t\tconst newFocus = Position.createAt( itemOrPosition, offset );\n\n\t\tif ( newFocus.compareWith( this.focus ) == 'same' ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst anchor = this.anchor;\n\n\t\tthis._ranges.pop();\n\n\t\tif ( newFocus.compareWith( anchor ) == 'before' ) {\n\t\t\tthis.addRange( new Range( newFocus, anchor ), true );\n\t\t} else {\n\t\t\tthis.addRange( new Range( anchor, newFocus ) );\n\t\t}\n\t}\n\n\t/**\n\t * Returns the selected element. {@link module:engine/view/element~Element Element} is considered as selected if there is only\n\t * one range in the selection, and that range contains exactly one element.\n\t * Returns `null` if there is no selected element.\n\t *\n\t * @returns {module:engine/view/element~Element|null}\n\t */\n\tgetSelectedElement() {\n\t\tif ( this.rangeCount !== 1 ) {\n\t\t\treturn null;\n\t\t}\n\n\t\tconst range = this.getFirstRange();\n\t\tconst nodeAfterStart = range.start.nodeAfter;\n\t\tconst nodeBeforeEnd = range.end.nodeBefore;\n\n\t\treturn ( nodeAfterStart instanceof Element && nodeAfterStart == nodeBeforeEnd ) ? nodeAfterStart : null;\n\t}\n\n\t/**\n\t * Creates and returns an instance of `Selection` that is a clone of given selection, meaning that it has same\n\t * ranges and same direction as this selection.\n\t *\n\t * @params {module:engine/view/selection~Selection} otherSelection Selection to be cloned.\n\t * @returns {module:engine/view/selection~Selection} `Selection` instance that is a clone of given selection.\n\t */\n\tstatic createFromSelection( otherSelection ) {\n\t\tconst selection = new Selection();\n\t\tselection.setTo( otherSelection );\n\n\t\treturn selection;\n\t}\n\n\t/**\n\t * Adds range to selection - creates copy of given range so it can be safely used and modified.\n\t *\n\t * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-selection-range-intersects` if added range intersects\n\t * with ranges already stored in selection instance.\n\t *\n\t * @private\n\t * @param {module:engine/view/range~Range} range\n\t */\n\t_pushRange( range ) {\n\t\tfor ( let storedRange of this._ranges ) {\n\t\t\tif ( range.isIntersecting( storedRange ) ) {\n\t\t\t\t/**\n\t\t\t\t * Trying to add a range that intersects with another range from selection.\n\t\t\t\t *\n\t\t\t\t * @error selection-range-intersects\n\t\t\t\t * @param {module:engine/view/range~Range} addedRange Range that was added to the selection.\n\t\t\t\t * @param {module:engine/view/range~Range} intersectingRange Range from selection that intersects with `addedRange`.\n\t\t\t\t */\n\t\t\t\tthrow new CKEditorError(\n\t\t\t\t\t'view-selection-range-intersects: Trying to add a range that intersects with another range from selection.',\n\t\t\t\t\t{ addedRange: range, intersectingRange: storedRange }\n\t\t\t\t);\n\t\t\t}\n\t\t}\n\n\t\tthis._ranges.push( Range.createFromRange( range ) );\n\t}\n}\n\nmix( Selection, EmitterMixin );\n\n/**\n * Fired whenever selection ranges are changed through {@link ~Selection Selection API}.\n *\n * @event change\n */\n\n/**\n * @event change:range\n */\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/view/selection.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/treewalker\n */\n\nimport Element from './element';\nimport Text from './text';\nimport TextProxy from './textproxy';\nimport Position from './position';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/**\n * Position iterator class. It allows to iterate forward and backward over the document.\n */\nexport default class TreeWalker {\n\t/**\n\t * Creates a range iterator. All parameters are optional, but you have to specify either `boundaries` or `startPosition`.\n\t *\n\t * @constructor\n\t * @param {Object} options Object with configuration.\n\t * @param {module:engine/view/range~Range} [options.boundaries=null] Range to define boundaries of the iterator.\n\t * @param {module:engine/view/position~Position} [options.startPosition] Starting position.\n\t * @param {'forward'|'backward'} [options.direction='forward'] Walking direction.\n\t * @param {Boolean} [options.singleCharacters=false] Flag indicating whether all characters from\n\t * {@link module:engine/view/text~Text} should be returned as one {@link module:engine/view/text~Text} (`false`) ore one by one as\n\t * {@link module:engine/view/textproxy~TextProxy} (`true`).\n\t * @param {Boolean} [options.shallow=false] Flag indicating whether iterator should enter elements or not. If the\n\t * iterator is shallow child nodes of any iterated node will not be returned along with `elementEnd` tag.\n\t * @param {Boolean} [options.ignoreElementEnd=false] Flag indicating whether iterator should ignore `elementEnd`\n\t * tags. If the option is true walker will not return a parent node of start position. If this option is `true`\n\t * each {@link module:engine/view/element~Element} will be returned once, while if the option is `false` they might be returned\n\t * twice: for `'elementStart'` and `'elementEnd'`.\n\t */\n\tconstructor( options = {} ) {\n\t\tif ( !options.boundaries && !options.startPosition ) {\n\t\t\t/**\n\t\t\t * Neither boundaries nor starting position have been defined.\n\t\t\t *\n\t\t\t * @error tree-walker-no-start-position\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'view-tree-walker-no-start-position: Neither boundaries nor starting position have been defined.' );\n\t\t}\n\n\t\tif ( options.direction && options.direction != 'forward' && options.direction != 'backward' ) {\n\t\t\tthrow new CKEditorError(\n\t\t\t\t'view-tree-walker-unknown-direction: Only `backward` and `forward` direction allowed.',\n\t\t\t\t{ direction: options.direction }\n\t\t\t);\n\t\t}\n\n\t\t/**\n\t\t * Iterator boundaries.\n\t\t *\n\t\t * When the iterator is walking `'forward'` on the end of boundary or is walking `'backward'`\n\t\t * on the start of boundary, then `{ done: true }` is returned.\n\t\t *\n\t\t * If boundaries are not defined they are set before first and after last child of the root node.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/view/range~Range} module:engine/view/treewalker~TreeWalker#boundaries\n\t\t */\n\t\tthis.boundaries = options.boundaries || null;\n\n\t\t/**\n\t\t * Iterator position. If start position is not defined then position depends on {@link #direction}. If direction is\n\t\t * `'forward'` position starts form the beginning, when direction is `'backward'` position starts from the end.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/view/position~Position} module:engine/view/treewalker~TreeWalker#position\n\t\t */\n\t\tif ( options.startPosition ) {\n\t\t\tthis.position = Position.createFromPosition( options.startPosition );\n\t\t} else {\n\t\t\tthis.position = Position.createFromPosition( options.boundaries[ options.direction == 'backward' ? 'end' : 'start' ] );\n\t\t}\n\n\t\t/**\n\t\t * Walking direction. Defaults `'forward'`.\n\t\t *\n\t\t * @readonly\n\t\t * @member {'backward'|'forward'} module:engine/view/treewalker~TreeWalker#direction\n\t\t */\n\t\tthis.direction = options.direction || 'forward';\n\n\t\t/**\n\t\t * Flag indicating whether all characters from {@link module:engine/view/text~Text} should be returned as one\n\t\t * {@link module:engine/view/text~Text} or one by one as {@link module:engine/view/textproxy~TextProxy}.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Boolean} module:engine/view/treewalker~TreeWalker#singleCharacters\n\t\t */\n\t\tthis.singleCharacters = !!options.singleCharacters;\n\n\t\t/**\n\t\t * Flag indicating whether iterator should enter elements or not. If the iterator is shallow child nodes of any\n\t\t * iterated node will not be returned along with `elementEnd` tag.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Boolean} module:engine/view/treewalker~TreeWalker#shallow\n\t\t */\n\t\tthis.shallow = !!options.shallow;\n\n\t\t/**\n\t\t * Flag indicating whether iterator should ignore `elementEnd` tags. If set to `true`, walker will not\n\t\t * return a parent node of the start position. Each {@link module:engine/view/element~Element} will be returned once.\n\t\t * When set to `false` each element might be returned twice: for `'elementStart'` and `'elementEnd'`.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Boolean} module:engine/view/treewalker~TreeWalker#ignoreElementEnd\n\t\t */\n\t\tthis.ignoreElementEnd = !!options.ignoreElementEnd;\n\n\t\t/**\n\t\t * Start boundary parent.\n\t\t *\n\t\t * @private\n\t\t * @member {module:engine/view/node~Node} module:engine/view/treewalker~TreeWalker#_boundaryStartParent\n\t\t */\n\t\tthis._boundaryStartParent = this.boundaries ? this.boundaries.start.parent : null;\n\n\t\t/**\n\t\t * End boundary parent.\n\t\t *\n\t\t * @private\n\t\t * @member {module:engine/view/node~Node} module:engine/view/treewalker~TreeWalker#_boundaryEndParent\n\t\t */\n\t\tthis._boundaryEndParent = this.boundaries ? this.boundaries.end.parent : null;\n\t}\n\n\t/**\n\t * Iterator interface.\n\t */\n\t[ Symbol.iterator ]() {\n\t\treturn this;\n\t}\n\n\t/**\n\t * Moves {@link #position} in the {@link #direction} skipping values as long as the callback function returns `true`.\n\t *\n\t * For example:\n\t *\n\t * \t\twalker.skip( value => value.type == 'text' ); // <p>{}foo</p> -> <p>foo[]</p>\n\t * \t\twalker.skip( value => true ); // Move the position to the end: <p>{}foo</p> -> <p>foo</p>[]\n\t * \t\twalker.skip( value => false ); // Do not move the position.\n\t *\n\t * @param {Function} skip Callback function. Gets {@link module:engine/view/treewalker~TreeWalkerValue} and should\n\t * return `true` if the value should be skipped or `false` if not.\n\t */\n\tskip( skip ) {\n\t\tlet done, value, prevPosition;\n\n\t\tdo {\n\t\t\tprevPosition = this.position;\n\n\t\t\t( { done, value } = this.next() );\n\t\t} while ( !done && skip( value ) );\n\n\t\tif ( !done ) {\n\t\t\tthis.position = prevPosition;\n\t\t}\n\t}\n\n\t/**\n\t * Iterator interface method.\n\t * Detects walking direction and makes step forward or backward.\n\t *\n\t * @returns {Object} Object implementing iterator interface, returning information about taken step.\n\t */\n\tnext() {\n\t\tif ( this.direction == 'forward' ) {\n\t\t\treturn this._next();\n\t\t} else {\n\t\t\treturn this._previous();\n\t\t}\n\t}\n\n\t/**\n\t * Makes a step forward in view. Moves the {@link #position} to the next position and returns the encountered value.\n\t *\n\t * @private\n\t * @returns {Object}\n\t * @returns {Boolean} return.done `true` if iterator is done, `false` otherwise.\n\t * @returns {module:engine/view/treewalker~TreeWalkerValue} return.value Information about taken step.\n\t */\n\t_next() {\n\t\tlet position = Position.createFromPosition( this.position );\n\t\tconst previousPosition = this.position;\n\t\tconst parent = position.parent;\n\n\t\t// We are at the end of the root.\n\t\tif ( parent.parent === null && position.offset === parent.childCount ) {\n\t\t\treturn { done: true };\n\t\t}\n\n\t\t// We reached the walker boundary.\n\t\tif ( parent === this._boundaryEndParent && position.offset == this.boundaries.end.offset ) {\n\t\t\treturn { done: true };\n\t\t}\n\n\t\t// Get node just after current position.\n\t\tlet node;\n\n\t\t// Text is a specific parent because it contains string instead of child nodes.\n\t\tif ( parent instanceof Text ) {\n\t\t\tif ( position.isAtEnd ) {\n\t\t\t\t// Prevent returning \"elementEnd\" for Text node. Skip that value and return the next walker step.\n\t\t\t\tthis.position = Position.createAfter( parent );\n\n\t\t\t\treturn this._next();\n\t\t\t}\n\n\t\t\tnode = parent.data[ position.offset ];\n\t\t} else {\n\t\t\tnode = parent.getChild( position.offset );\n\t\t}\n\n\t\tif ( node instanceof Element ) {\n\t\t\tif ( !this.shallow ) {\n\t\t\t\tposition = new Position( node, 0 );\n\t\t\t} else {\n\t\t\t\tposition.offset++;\n\t\t\t}\n\n\t\t\tthis.position = position;\n\n\t\t\treturn this._formatReturnValue( 'elementStart', node, previousPosition, position, 1 );\n\t\t} else if ( node instanceof Text ) {\n\t\t\tif ( this.singleCharacters ) {\n\t\t\t\tposition = new Position( node, 0 );\n\t\t\t\tthis.position = position;\n\n\t\t\t\treturn this._next();\n\t\t\t} else {\n\t\t\t\tlet charactersCount = node.data.length;\n\t\t\t\tlet item = node;\n\n\t\t\t\t// If text stick out of walker range, we need to cut it and wrap by TextProxy.\n\t\t\t\tif ( node == this._boundaryEndParent ) {\n\t\t\t\t\tcharactersCount = this.boundaries.end.offset;\n\t\t\t\t\titem = new TextProxy( node, 0, charactersCount );\n\t\t\t\t\tposition = Position.createAfter( item );\n\t\t\t\t} else {\n\t\t\t\t\t// If not just keep moving forward.\n\t\t\t\t\tposition.offset++;\n\t\t\t\t}\n\n\t\t\t\tthis.position = position;\n\n\t\t\t\treturn this._formatReturnValue( 'text', item, previousPosition, position, charactersCount );\n\t\t\t}\n\t\t} else if ( typeof node == 'string' ) {\n\t\t\tlet textLength;\n\n\t\t\tif ( this.singleCharacters ) {\n\t\t\t\ttextLength = 1;\n\t\t\t} else {\n\t\t\t\t// Check if text stick out of walker range.\n\t\t\t\tconst endOffset = parent === this._boundaryEndParent ? this.boundaries.end.offset : parent.data.length;\n\n\t\t\t\ttextLength = endOffset - position.offset;\n\t\t\t}\n\n\t\t\tconst textProxy = new TextProxy( parent, position.offset, textLength );\n\n\t\t\tposition.offset += textLength;\n\t\t\tthis.position = position;\n\n\t\t\treturn this._formatReturnValue( 'text', textProxy, previousPosition, position, textLength );\n\t\t} else {\n\t\t\t// `node` is not set, we reached the end of current `parent`.\n\t\t\tposition = Position.createAfter( parent );\n\t\t\tthis.position = position;\n\n\t\t\tif ( this.ignoreElementEnd ) {\n\t\t\t\treturn this._next();\n\t\t\t} else {\n\t\t\t\treturn this._formatReturnValue( 'elementEnd', parent, previousPosition, position );\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Makes a step backward in view. Moves the {@link #position} to the previous position and returns the encountered value.\n\t *\n\t * @private\n\t * @returns {Object}\n\t * @returns {Boolean} return.done True if iterator is done.\n\t * @returns {module:engine/view/treewalker~TreeWalkerValue} return.value Information about taken step.\n\t */\n\t_previous() {\n\t\tlet position = Position.createFromPosition( this.position );\n\t\tconst previousPosition = this.position;\n\t\tconst parent = position.parent;\n\n\t\t// We are at the beginning of the root.\n\t\tif ( parent.parent === null && position.offset === 0 ) {\n\t\t\treturn { done: true };\n\t\t}\n\n\t\t// We reached the walker boundary.\n\t\tif ( parent == this._boundaryStartParent && position.offset == this.boundaries.start.offset ) {\n\t\t\treturn { done: true };\n\t\t}\n\n\t\t// Get node just before current position.\n\t\tlet node;\n\n\t\t// Text {@link module:engine/view/text~Text} element is a specific parent because contains string instead of child nodes.\n\t\tif ( parent instanceof Text ) {\n\t\t\tif ( position.isAtStart ) {\n\t\t\t\t// Prevent returning \"elementStart\" for Text node. Skip that value and return the next walker step.\n\t\t\t\tthis.position = Position.createBefore( parent );\n\n\t\t\t\treturn this._previous();\n\t\t\t}\n\n\t\t\tnode = parent.data[ position.offset - 1 ];\n\t\t} else {\n\t\t\tnode = parent.getChild( position.offset - 1 );\n\t\t}\n\n\t\tif ( node instanceof Element ) {\n\t\t\tif ( !this.shallow ) {\n\t\t\t\tposition = new Position( node, node.childCount );\n\t\t\t\tthis.position = position;\n\n\t\t\t\tif ( this.ignoreElementEnd ) {\n\t\t\t\t\treturn this._previous();\n\t\t\t\t} else {\n\t\t\t\t\treturn this._formatReturnValue( 'elementEnd', node, previousPosition, position );\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\tposition.offset--;\n\t\t\t\tthis.position = position;\n\n\t\t\t\treturn this._formatReturnValue( 'elementStart', node, previousPosition, position, 1 );\n\t\t\t}\n\t\t} else if ( node instanceof Text ) {\n\t\t\tif ( this.singleCharacters ) {\n\t\t\t\tposition = new Position( node, node.data.length );\n\t\t\t\tthis.position = position;\n\n\t\t\t\treturn this._previous();\n\t\t\t} else {\n\t\t\t\tlet charactersCount = node.data.length;\n\t\t\t\tlet item = node;\n\n\t\t\t\t// If text stick out of walker range, we need to cut it and wrap by TextProxy.\n\t\t\t\tif ( node == this._boundaryStartParent ) {\n\t\t\t\t\tconst offset = this.boundaries.start.offset;\n\n\t\t\t\t\titem = new TextProxy( node, offset, node.data.length - offset );\n\t\t\t\t\tcharactersCount = item.data.length;\n\t\t\t\t\tposition = Position.createBefore( item );\n\t\t\t\t} else {\n\t\t\t\t\t// If not just keep moving backward.\n\t\t\t\t\tposition.offset--;\n\t\t\t\t}\n\n\t\t\t\tthis.position = position;\n\n\t\t\t\treturn this._formatReturnValue( 'text', item, previousPosition, position, charactersCount );\n\t\t\t}\n\t\t} else if ( typeof node == 'string' ) {\n\t\t\tlet textLength;\n\n\t\t\tif ( !this.singleCharacters ) {\n\t\t\t\t// Check if text stick out of walker range.\n\t\t\t\tconst startOffset = parent === this._boundaryStartParent ? this.boundaries.start.offset : 0;\n\n\t\t\t\ttextLength = position.offset - startOffset;\n\t\t\t} else {\n\t\t\t\ttextLength = 1;\n\t\t\t}\n\n\t\t\tposition.offset -= textLength;\n\n\t\t\tconst textProxy = new TextProxy( parent, position.offset, textLength );\n\n\t\t\tthis.position = position;\n\n\t\t\treturn this._formatReturnValue( 'text', textProxy, previousPosition, position, textLength );\n\t\t} else {\n\t\t\t// `node` is not set, we reached the beginning of current `parent`.\n\t\t\tposition = Position.createBefore( parent );\n\t\t\tthis.position = position;\n\n\t\t\treturn this._formatReturnValue( 'elementStart', parent, previousPosition, position, 1 );\n\t\t}\n\t}\n\n\t/**\n\t * Format returned data and adjust `previousPosition` and `nextPosition` if reach the bound of the {@link module:engine/view/text~Text}.\n\t *\n\t * @private\n\t * @param {module:engine/view/treewalker~TreeWalkerValueType} type Type of step.\n\t * @param {module:engine/view/item~Item} item Item between old and new position.\n\t * @param {module:engine/view/position~Position} previousPosition Previous position of iterator.\n\t * @param {module:engine/view/position~Position} nextPosition Next position of iterator.\n\t * @param {Number} [length] Length of the item.\n\t * @returns {module:engine/view/treewalker~TreeWalkerValue}\n\t */\n\t_formatReturnValue( type, item, previousPosition, nextPosition, length ) {\n\t\t// Text is a specific parent, because contains string instead of children.\n\t\t// Walker doesn't enter to the Text except situations when walker is iterating over every single character,\n\t\t// or the bound starts/ends inside the Text. So when the position is at the beginning or at the end of the Text\n\t\t// we move it just before or just after Text.\n\t\tif ( item instanceof TextProxy ) {\n\t\t\t// Position is at the end of Text.\n\t\t\tif ( item.offsetInText + item.data.length == item.textNode.data.length ) {\n\t\t\t\tif ( this.direction == 'forward' && !( this.boundaries && this.boundaries.end.isEqual( this.position ) ) ) {\n\t\t\t\t\tnextPosition = Position.createAfter( item.textNode );\n\t\t\t\t\t// When we change nextPosition of returned value we need also update walker current position.\n\t\t\t\t\tthis.position = nextPosition;\n\t\t\t\t} else {\n\t\t\t\t\tpreviousPosition = Position.createAfter( item.textNode );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Position is at the begining ot the text.\n\t\t\tif ( item.offsetInText === 0 ) {\n\t\t\t\tif ( this.direction == 'backward' && !( this.boundaries && this.boundaries.start.isEqual( this.position ) ) ) {\n\t\t\t\t\tnextPosition = Position.createBefore( item.textNode );\n\t\t\t\t\t// When we change nextPosition of returned value we need also update walker current position.\n\t\t\t\t\tthis.position = nextPosition;\n\t\t\t\t} else {\n\t\t\t\t\tpreviousPosition = Position.createBefore( item.textNode );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn {\n\t\t\tdone: false,\n\t\t\tvalue: {\n\t\t\t\ttype: type,\n\t\t\t\titem: item,\n\t\t\t\tpreviousPosition: previousPosition,\n\t\t\t\tnextPosition: nextPosition,\n\t\t\t\tlength: length\n\t\t\t}\n\t\t};\n\t}\n}\n\n/**\n * Type of the step made by {@link module:engine/view/treewalker~TreeWalker}.\n * Possible values: `'elementStart'` if walker is at the beginning of a node, `'elementEnd'` if walker is at the end\n * of node, or `'text'` if walker traversed over single and multiple characters.\n * For {@link module:engine/view/text~Text} `elementStart` and `elementEnd` is not returned.\n *\n * @typedef {String} module:engine/view/treewalker~TreeWalkerValueType\n */\n\n/**\n * Object returned by {@link module:engine/view/treewalker~TreeWalker} when traversing tree view.\n *\n * @typedef {Object} module:engine/view/treewalker~TreeWalkerValue\n * @property {module:engine/view/treewalker~TreeWalkerValueType} type\n * @property {module:engine/view/item~Item} item Item between old and new positions of {@link module:engine/view/treewalker~TreeWalker}.\n * @property {module:engine/view/position~Position} previousPosition Previous position of the iterator.\n * * Forward iteration: For `'elementEnd'` it is the last position inside the element. For all other types it is the\n * position before the item. Note that it is more efficient to use this position then calculate the position before\n * the node using {@link module:engine/view/position~Position.createBefore}.\n * * Backward iteration: For `'elementStart'` it is the first position inside the element. For all other types it is\n * the position after item.\n * * If the position is at the beginning or at the end of the {@link module:engine/view/text~Text} it is always moved from the\n * inside of the Text to its parent just before or just after Text.\n * @property {module:engine/view/position~Position} nextPosition Next position of the iterator.\n * * Forward iteration: For `'elementStart'` it is the first position inside the element. For all other types it is\n * the position after the item.\n * * Backward iteration: For `'elementEnd'` it is last position inside element. For all other types it is the position\n * before the item.\n * * If the position is at the beginning or at the end of the {@link module:engine/view/text~Text} it is always moved from the\n * inside of the Text to its parent just before or just after Text.\n * @property {Number} [length] Length of the item. For `'elementStart'` it is 1. For `'text'` it is\n * the length of the text. For `'elementEnd'` it is undefined.\n */\n\n/**\n * Tree walking directions.\n *\n * @typedef {'forward'|'backward'} module:engine/view/treewalker~TreeWalkerDirection\n */\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/view/treewalker.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module module:engine/view/writer\n */\n\nimport Position from './position';\nimport ContainerElement from './containerelement';\nimport AttributeElement from './attributeelement';\nimport EmptyElement from './emptyelement';\nimport UIElement from './uielement';\nimport Text from './text';\nimport Range from './range';\nimport TreeWalker from './treewalker';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\nimport DocumentFragment from './documentfragment';\nimport isIterable from '@ckeditor/ckeditor5-utils/src/isiterable';\n\n/**\n * Contains functions used for composing view tree.\n *\n * @namespace writer\n */\n\nconst writer = {\n\tbreakAttributes,\n\tbreakContainer,\n\tmergeAttributes,\n\tmergeContainers,\n\tinsert,\n\tremove,\n\tclear,\n\tmove,\n\twrap,\n\twrapPosition,\n\tunwrap,\n\trename,\n\tbreakViewRangePerContainer\n};\n\nexport default writer;\n\n/**\n * Breaks attribute nodes at provided position or at boundaries of provided range. It breaks attribute elements inside\n * up to a container element.\n *\n * In following examples `<p>` is a container, `<b>` and `<u>` are attribute nodes:\n *\n *\t\t<p>foo<b><u>bar{}</u></b></p> -> <p>foo<b><u>bar</u></b>[]</p>\n *\t\t<p>foo<b><u>{}bar</u></b></p> -> <p>foo{}<b><u>bar</u></b></p>\n *\t\t<p>foo<b><u>b{}ar</u></b></p> -> <p>foo<b><u>b</u></b>[]<b><u>ar</u></b></p>\n *\t\t<p><b>fo{o</b><u>ba}r</u></p> -> <p><b>fo</b><b>o</b><u>ba</u><u>r</u></b></p>\n *\n * **Note:** {@link module:engine/view/documentfragment~DocumentFragment DocumentFragment} is treated like a container.\n *\n * **Note:** Difference between {@link module:engine/view/writer~writer.breakAttributes breakAttributes} and\n * {@link module:engine/view/writer~writer.breakContainer breakContainer} is that `breakAttributes` breaks all\n * {@link module:engine/view/attributeelement~AttributeElement attribute elements} that are ancestors of given `position`, up to the first\n * encountered {@link module:engine/view/containerelement~ContainerElement container element}. `breakContainer` assumes that given\n * `position`\n * is directly in container element and breaks that container element.\n *\n * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-writer-invalid-range-container`\n * when {@link module:engine/view/range~Range#start start}\n * and {@link module:engine/view/range~Range#end end} positions of a passed range are not placed inside same parent container.\n *\n * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-writer-cannot-break-empty-element`\n * when trying to break attributes\n * inside {@link module:engine/view/emptyelement~EmptyElement EmptyElement}.\n *\n * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-writer-cannot-break-ui-element`\n * when trying to break attributes\n * inside {@link module:engine/view/uielement~UIElement UIElement}.\n *\n * @see module:engine/view/attributeelement~AttributeElement\n * @see module:engine/view/containerelement~ContainerElement\n * @see module:engine/view/writer~writer.breakContainer\n * @function module:engine/view/writer~writer.breakAttributes\n * @param {module:engine/view/position~Position|module:engine/view/range~Range} positionOrRange Position where to break attribute elements.\n * @returns {module:engine/view/position~Position|module:engine/view/range~Range} New position or range, after breaking the attribute\n * elements.\n */\nexport function breakAttributes( positionOrRange ) {\n\tif ( positionOrRange instanceof Position ) {\n\t\treturn _breakAttributes( positionOrRange );\n\t} else {\n\t\treturn _breakAttributesRange( positionOrRange );\n\t}\n}\n\n/**\n * Breaks {@link module:engine/view/containerelement~ContainerElement container view element} into two, at the given position. Position\n * has to be directly inside container element and cannot be in root. Does not break if position is at the beginning\n * or at the end of it's parent element.\n *\n *\t\t<p>foo^bar</p> -> <p>foo</p><p>bar</p>\n *\t\t<div><p>foo</p>^<p>bar</p></div> -> <div><p>foo</p></div><div><p>bar</p></div>\n *\t\t<p>^foobar</p> -> ^<p>foobar</p>\n *\t\t<p>foobar^</p> -> <p>foobar</p>^\n *\n * **Note:** Difference between {@link module:engine/view/writer~writer.breakAttributes breakAttributes} and\n * {@link module:engine/view/writer~writer.breakContainer breakContainer} is that `breakAttributes` breaks all\n * {@link module:engine/view/attributeelement~AttributeElement attribute elements} that are ancestors of given `position`, up to the first\n * encountered {@link module:engine/view/containerelement~ContainerElement container element}. `breakContainer` assumes that given\n * `position`\n * is directly in container element and breaks that container element.\n *\n * @see module:engine/view/attributeelement~AttributeElement\n * @see module:engine/view/containerelement~ContainerElement\n * @see module:engine/view/writer~writer.breakAttributes\n * @function module:engine/view/writer~writer.breakContainer\n * @param {module:engine/view/position~Position} position Position where to break element.\n * @returns {module:engine/view/position~Position} Position between broken elements. If element has not been broken, the returned position\n * is placed either before it or after it.\n */\nexport function breakContainer( position ) {\n\tconst element = position.parent;\n\n\tif ( !( element.is( 'containerElement' ) ) ) {\n\t\t/**\n\t\t * Trying to break an element which is not a container element.\n\t\t *\n\t\t * @error view-writer-break-non-container-element\n\t\t */\n\t\tthrow new CKEditorError( 'view-writer-break-non-container-element: Trying to break an element which is not a container element.' );\n\t}\n\n\tif ( !element.parent ) {\n\t\t/**\n\t\t * Trying to break root element.\n\t\t *\n\t\t * @error view-writer-break-root\n\t\t */\n\t\tthrow new CKEditorError( 'view-writer-break-root: Trying to break root element.' );\n\t}\n\n\tif ( position.isAtStart ) {\n\t\treturn Position.createBefore( element );\n\t} else if ( !position.isAtEnd ) {\n\t\tconst newElement = element.clone( false );\n\n\t\tinsert( Position.createAfter( element ), newElement );\n\n\t\tconst sourceRange = new Range( position, Position.createAt( element, 'end' ) );\n\t\tconst targetPosition = new Position( newElement, 0 );\n\n\t\tmove( sourceRange, targetPosition );\n\t}\n\n\treturn Position.createAfter( element );\n}\n\n/**\n * Merges {@link module:engine/view/attributeelement~AttributeElement attribute elements}. It also merges text nodes if needed.\n * Only {@link module:engine/view/attributeelement~AttributeElement#isSimilar similar} attribute elements can be merged.\n *\n * In following examples `<p>` is a container and `<b>` is an attribute element:\n *\n *\t\t<p>foo[]bar</p> -> <p>foo{}bar</p>\n *\t\t<p><b>foo</b>[]<b>bar</b></p> -> <p><b>foo{}bar</b></p>\n *\t\t<p><b foo=\"bar\">a</b>[]<b foo=\"baz\">b</b></p> -> <p><b foo=\"bar\">a</b>[]<b foo=\"baz\">b</b></p>\n *\n * It will also take care about empty attributes when merging:\n *\n *\t\t<p><b>[]</b></p> -> <p>[]</p>\n *\t\t<p><b>foo</b><i>[]</i><b>bar</b></p> -> <p><b>foo{}bar</b></p>\n *\n * **Note:** Difference between {@link module:engine/view/writer~writer.mergeAttributes mergeAttributes} and\n * {@link module:engine/view/writer~writer.mergeContainers mergeContainers} is that `mergeAttributes` merges two\n * {@link module:engine/view/attributeelement~AttributeElement attribute elements} or {@link module:engine/view/text~Text text nodes}\n * while `mergeContainer` merges two {@link module:engine/view/containerelement~ContainerElement container elements}.\n *\n * @see module:engine/view/attributeelement~AttributeElement\n * @see module:engine/view/containerelement~ContainerElement\n * @see module:engine/view/writer~writer.mergeContainers\n * @function module:engine/view/writer~writer.mergeAttributes\n * @param {module:engine/view/position~Position} position Merge position.\n * @returns {module:engine/view/position~Position} Position after merge.\n */\nexport function mergeAttributes( position ) {\n\tconst positionOffset = position.offset;\n\tconst positionParent = position.parent;\n\n\t// When inside text node - nothing to merge.\n\tif ( positionParent.is( 'text' ) ) {\n\t\treturn position;\n\t}\n\n\t// When inside empty attribute - remove it.\n\tif ( positionParent.is( 'attributeElement' ) && positionParent.childCount === 0 ) {\n\t\tconst parent = positionParent.parent;\n\t\tconst offset = positionParent.index;\n\t\tpositionParent.remove();\n\n\t\treturn mergeAttributes( new Position( parent, offset ) );\n\t}\n\n\tconst nodeBefore = positionParent.getChild( positionOffset - 1 );\n\tconst nodeAfter = positionParent.getChild( positionOffset );\n\n\t// Position should be placed between two nodes.\n\tif ( !nodeBefore || !nodeAfter ) {\n\t\treturn position;\n\t}\n\n\t// When position is between two text nodes.\n\tif ( nodeBefore.is( 'text' ) && nodeAfter.is( 'text' ) ) {\n\t\treturn mergeTextNodes( nodeBefore, nodeAfter );\n\t}\n\t// When selection is between two same attribute elements.\n\telse if ( nodeBefore.is( 'attributeElement' ) && nodeAfter.is( 'attributeElement' ) && nodeBefore.isSimilar( nodeAfter ) ) {\n\t\t// Move all children nodes from node placed after selection and remove that node.\n\t\tconst count = nodeBefore.childCount;\n\t\tnodeBefore.appendChildren( nodeAfter.getChildren() );\n\t\tnodeAfter.remove();\n\n\t\t// New position is located inside the first node, before new nodes.\n\t\t// Call this method recursively to merge again if needed.\n\t\treturn mergeAttributes( new Position( nodeBefore, count ) );\n\t}\n\n\treturn position;\n}\n\n/**\n * Merges two {@link module:engine/view/containerelement~ContainerElement container elements} that are before and after given position.\n * Precisely, the element after the position is removed and it's contents are moved to element before the position.\n *\n *\t\t<p>foo</p>^<p>bar</p> -> <p>foo^bar</p>\n *\t\t<div>foo</div>^<p>bar</p> -> <div>foo^bar</div>\n *\n * **Note:** Difference between {@link module:engine/view/writer~writer.mergeAttributes mergeAttributes} and\n * {@link module:engine/view/writer~writer.mergeContainers mergeContainers} is that `mergeAttributes` merges two\n * {@link module:engine/view/attributeelement~AttributeElement attribute elements} or {@link module:engine/view/text~Text text nodes}\n * while `mergeContainer` merges two {@link module:engine/view/containerelement~ContainerElement container elements}.\n *\n * @see module:engine/view/attributeelement~AttributeElement\n * @see module:engine/view/containerelement~ContainerElement\n * @see module:engine/view/writer~writer.mergeAttributes\n * @function module:engine/view/writer~writer.mergeContainers\n * @param {module:engine/view/position~Position} position Merge position.\n * @returns {module:engine/view/position~Position} Position after merge.\n */\nexport function mergeContainers( position ) {\n\tconst prev = position.nodeBefore;\n\tconst next = position.nodeAfter;\n\n\tif ( !prev || !next || !prev.is( 'containerElement' ) || !next.is( 'containerElement' ) ) {\n\t\t/**\n\t\t * Element before and after given position cannot be merged.\n\t\t *\n\t\t * @error view-writer-merge-containers-invalid-position\n\t\t */\n\t\tthrow new CKEditorError( 'view-writer-merge-containers-invalid-position: ' +\n\t\t\t'Element before and after given position cannot be merged.' );\n\t}\n\n\tconst lastChild = prev.getChild( prev.childCount - 1 );\n\tconst newPosition = lastChild instanceof Text ? Position.createAt( lastChild, 'end' ) : Position.createAt( prev, 'end' );\n\n\tmove( Range.createIn( next ), Position.createAt( prev, 'end' ) );\n\tremove( Range.createOn( next ) );\n\n\treturn newPosition;\n}\n\n/**\n * Breaks given `range` on a set of {@link module:engine/view/range~Range ranges}, that each are contained within a\n * {@link module:engine/view/containerelement~ContainerElement container element}. After `range` is broken, it's \"pieces\" can\n * be used by other {@link module:engine/view/writer~writer} methods (which expect that passed ranges are contained within\n * one container element).\n *\n * @function module:engine/view/writer~writer.breakViewRangePerContainer\n * @param {module:engine/view/range~Range} range Range to break.\n * @returns {Array.<module:engine/view/range~Range>} Ranges that combine into passed `viewRange`.\n */\nexport function breakViewRangePerContainer( range ) {\n\tconst ranges = [];\n\tconst walker = new TreeWalker( { boundaries: range } );\n\n\tlet start = range.start;\n\n\tfor ( let value of walker ) {\n\t\tif ( value.item.is( 'containerElement' ) ) {\n\t\t\tif ( !start.isEqual( value.previousPosition ) ) {\n\t\t\t\tranges.push( new Range( start, value.previousPosition ) );\n\t\t\t}\n\n\t\t\tstart = value.nextPosition;\n\t\t}\n\t}\n\n\tranges.push( new Range( start, range.end ) );\n\n\treturn ranges;\n}\n\n/**\n * Insert node or nodes at specified position. Takes care about breaking attributes before insertion\n * and merging them afterwards.\n *\n * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-writer-insert-invalid-node` when nodes to insert\n * contains instances that are not {@link module:engine/view/text~Text Texts},\n * {@link module:engine/view/attributeelement~AttributeElement AttributeElements},\n * {@link module:engine/view/containerelement~ContainerElement ContainerElements},\n * {@link module:engine/view/emptyelement~EmptyElement EmptyElements} or\n * {@link module:engine/view/uielement~UIElement UIElements}.\n *\n * @function insert\n * @param {module:engine/view/position~Position} position Insertion position.\n * @param {module:engine/view/text~Text|module:engine/view/attributeelement~AttributeElement|\n * module:engine/view/containerelement~ContainerElement|module:engine/view/emptyelement~EmptyElement|\n * module:engine/view/uielement~UIElement|Iterable.<module:engine/view/text~Text|\n * module:engine/view/attributeelement~AttributeElement|module:engine/view/containerelement~ContainerElement|\n * module:engine/view/emptyelement~EmptyElement|module:engine/view/uielement~UIElement>} nodes Node or nodes to insert.\n * @returns {module:engine/view/range~Range} Range around inserted nodes.\n */\nexport function insert( position, nodes ) {\n\tnodes = isIterable( nodes ) ? [ ...nodes ] : [ nodes ];\n\n\t// Check if nodes to insert are instances of AttributeElements, ContainerElements, EmptyElements, UIElements or Text.\n\tvalidateNodesToInsert( nodes );\n\n\tconst container = getParentContainer( position );\n\n\tif ( !container ) {\n\t\t/**\n\t\t * Position's parent container cannot be found.\n\t\t *\n\t\t * @error view-writer-invalid-position-container\n\t\t */\n\t\tthrow new CKEditorError( 'view-writer-invalid-position-container' );\n\t}\n\n\tconst insertionPosition = _breakAttributes( position, true );\n\n\tconst length = container.insertChildren( insertionPosition.offset, nodes );\n\tconst endPosition = insertionPosition.getShiftedBy( length );\n\tconst start = mergeAttributes( insertionPosition );\n\n\t// When no nodes were inserted - return collapsed range.\n\tif ( length === 0 ) {\n\t\treturn new Range( start, start );\n\t} else {\n\t\t// If start position was merged - move end position.\n\t\tif ( !start.isEqual( insertionPosition ) ) {\n\t\t\tendPosition.offset--;\n\t\t}\n\n\t\tconst end = mergeAttributes( endPosition );\n\n\t\treturn new Range( start, end );\n\t}\n}\n\n/**\n * Removes provided range from the container.\n *\n * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-writer-invalid-range-container` when\n * {@link module:engine/view/range~Range#start start} and {@link module:engine/view/range~Range#end end} positions are not placed inside\n * same parent container.\n *\n * @function module:engine/view/writer~writer.remove\n * @param {module:engine/view/range~Range} range Range to remove from container. After removing, it will be updated\n * to a collapsed range showing the new position.\n * @returns {module:engine/view/documentfragment~DocumentFragment} Document fragment containing removed nodes.\n */\nexport function remove( range ) {\n\tvalidateRangeContainer( range );\n\n\t// If range is collapsed - nothing to remove.\n\tif ( range.isCollapsed ) {\n\t\treturn new DocumentFragment();\n\t}\n\n\t// Break attributes at range start and end.\n\tconst { start: breakStart, end: breakEnd } = _breakAttributesRange( range, true );\n\tconst parentContainer = breakStart.parent;\n\n\tconst count = breakEnd.offset - breakStart.offset;\n\n\t// Remove nodes in range.\n\tconst removed = parentContainer.removeChildren( breakStart.offset, count );\n\n\t// Merge after removing.\n\tconst mergePosition = mergeAttributes( breakStart );\n\trange.start = mergePosition;\n\trange.end = Position.createFromPosition( mergePosition );\n\n\t// Return removed nodes.\n\treturn new DocumentFragment( removed );\n}\n\n/**\n * Removes matching elements from given range.\n *\n * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-writer-invalid-range-container` when\n * {@link module:engine/view/range~Range#start start} and {@link module:engine/view/range~Range#end end} positions are not placed inside\n * same parent container.\n *\n * @function module:engine/view/writer~writer.clear\n * @param {module:engine/view/range~Range} range Range to clear.\n * @param {module:engine/view/element~Element} element Element to remove.\n */\nexport function clear( range, element ) {\n\tvalidateRangeContainer( range );\n\n\t// Create walker on given range.\n\t// We walk backward because when we remove element during walk it modifies range end position.\n\tconst walker = range.getWalker( {\n\t\tdirection: 'backward',\n\t\tignoreElementEnd: true\n\t} );\n\n\t// Let's walk.\n\tfor ( const current of walker ) {\n\t\tconst item = current.item;\n\t\tlet rangeToRemove;\n\n\t\t// When current item matches to the given element.\n\t\tif ( item.is( 'element' ) && element.isSimilar( item ) ) {\n\t\t\t// Create range on this element.\n\t\t\trangeToRemove = Range.createOn( item );\n\t\t// When range starts inside Text or TextProxy element.\n\t\t} else if ( !current.nextPosition.isAfter( range.start ) && ( item.is( 'text' ) || item.is( 'textProxy' ) ) ) {\n\t\t\t// We need to check if parent of this text matches to given element.\n\t\t\tconst parentElement = item.getAncestors().find( ( ancestor ) => {\n\t\t\t\treturn ancestor.is( 'element' ) && element.isSimilar( ancestor );\n\t\t\t} );\n\n\t\t\t// If it is then create range inside this element.\n\t\t\tif ( parentElement ) {\n\t\t\t\trangeToRemove = Range.createIn( parentElement );\n\t\t\t}\n\t\t}\n\n\t\t// If we have found element to remove.\n\t\tif ( rangeToRemove ) {\n\t\t\t// We need to check if element range stick out of the given range and truncate if it is.\n\t\t\tif ( rangeToRemove.end.isAfter( range.end ) ) {\n\t\t\t\trangeToRemove.end = range.end;\n\t\t\t}\n\n\t\t\tif ( rangeToRemove.start.isBefore( range.start ) ) {\n\t\t\t\trangeToRemove.start = range.start;\n\t\t\t}\n\n\t\t\t// At the end we remove range with found element.\n\t\t\tremove( rangeToRemove );\n\t\t}\n\t}\n}\n\n/**\n * Moves nodes from provided range to target position.\n *\n * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-writer-invalid-range-container` when\n * {@link module:engine/view/range~Range#start start} and {@link module:engine/view/range~Range#end end} positions are not placed inside\n * same parent container.\n *\n * @function module:engine/view/writer~writer.move\n * @param {module:engine/view/range~Range} sourceRange Range containing nodes to move.\n * @param {module:engine/view/position~Position} targetPosition Position to insert.\n * @returns {module:engine/view/range~Range} Range in target container. Inserted nodes are placed between\n * {@link module:engine/view/range~Range#start start} and {@link module:engine/view/range~Range#end end} positions.\n */\nexport function move( sourceRange, targetPosition ) {\n\tlet nodes;\n\n\tif ( targetPosition.isAfter( sourceRange.end ) ) {\n\t\ttargetPosition = _breakAttributes( targetPosition, true );\n\n\t\tconst parent = targetPosition.parent;\n\t\tconst countBefore = parent.childCount;\n\n\t\tsourceRange = _breakAttributesRange( sourceRange, true );\n\n\t\tnodes = remove( sourceRange );\n\n\t\ttargetPosition.offset += ( parent.childCount - countBefore );\n\t} else {\n\t\tnodes = remove( sourceRange );\n\t}\n\n\treturn insert( targetPosition, nodes );\n}\n\n/**\n * Wraps elements within range with provided {@link module:engine/view/attributeelement~AttributeElement AttributeElement}.\n *\n * Throws {@link module:utils/ckeditorerror~CKEditorError} `view-writer-invalid-range-container`\n * when {@link module:engine/view/range~Range#start}\n * and {@link module:engine/view/range~Range#end} positions are not placed inside same parent container.\n * Throws {@link module:utils/ckeditorerror~CKEditorError} `view-writer-wrap-invalid-attribute` when passed attribute element is not\n * an instance of {module:engine/view/attributeelement~AttributeElement AttributeElement}.\n *\n * @function module:engine/view/writer~writer.wrap\n * @param {module:engine/view/range~Range} range Range to wrap.\n * @param {module:engine/view/attributeelement~AttributeElement} attribute Attribute element to use as wrapper.\n */\nexport function wrap( range, attribute ) {\n\tif ( !( attribute instanceof AttributeElement ) ) {\n\t\t/**\n\t\t * Attribute element need to be instance of attribute element.\n\t\t *\n\t\t * @error view-writer-wrap-invalid-attribute\n\t\t */\n\t\tthrow new CKEditorError( 'view-writer-wrap-invalid-attribute' );\n\t}\n\n\tvalidateRangeContainer( range );\n\n\t// If range is collapsed - nothing to wrap.\n\tif ( range.isCollapsed ) {\n\t\treturn range;\n\t}\n\n\t// Range around one element.\n\tif ( range.end.isEqual( range.start.getShiftedBy( 1 ) ) ) {\n\t\tconst node = range.start.nodeAfter;\n\n\t\tif ( node instanceof AttributeElement && wrapAttributeElement( attribute, node ) ) {\n\t\t\treturn range;\n\t\t}\n\t}\n\n\t// Range is inside single attribute and spans on all children.\n\tif ( rangeSpansOnAllChildren( range ) && wrapAttributeElement( attribute, range.start.parent ) ) {\n\t\tconst parent = range.start.parent.parent;\n\t\tconst index = range.start.parent.index;\n\n\t\treturn Range.createFromParentsAndOffsets( parent, index, parent, index + 1 ) ;\n\t}\n\n\t// Break attributes at range start and end.\n\tconst { start: breakStart, end: breakEnd } = _breakAttributesRange( range, true );\n\tconst parentContainer = breakStart.parent;\n\n\t// Unwrap children located between break points.\n\tconst unwrappedRange = unwrapChildren( parentContainer, breakStart.offset, breakEnd.offset, attribute );\n\n\t// Wrap all children with attribute.\n\tconst newRange = wrapChildren( parentContainer, unwrappedRange.start.offset, unwrappedRange.end.offset, attribute );\n\n\t// Merge attributes at the both ends and return a new range.\n\tconst start = mergeAttributes( newRange.start );\n\n\t// If start position was merged - move end position back.\n\tif ( !start.isEqual( newRange.start ) ) {\n\t\tnewRange.end.offset--;\n\t}\n\tconst end = mergeAttributes( newRange.end );\n\n\treturn new Range( start, end );\n}\n\n/**\n * Wraps position with provided attribute. Returns new position after wrapping. This method will also merge newly\n * added attribute with its siblings whenever possible.\n *\n * Throws {@link module:utils/ckeditorerror~CKEditorError} `view-writer-wrap-invalid-attribute` when passed attribute element is not\n * an instance of {module:engine/view/attributeelement~AttributeElement AttributeElement}.\n *\n * @param {module:engine/view/position~Position} position\n * @param {module:engine/view/attributeelement~AttributeElement} attribute\n * @returns {module:engine/view/position~Position} New position after wrapping.\n */\nexport function wrapPosition( position, attribute ) {\n\tif ( !( attribute instanceof AttributeElement ) ) {\n\t\t/**\n\t\t * Attribute element need to be instance of attribute element.\n\t\t *\n\t\t * @error view-writer-wrap-invalid-attribute\n\t\t */\n\t\tthrow new CKEditorError( 'view-writer-wrap-invalid-attribute' );\n\t}\n\n\t// Return same position when trying to wrap with attribute similar to position parent.\n\tif ( attribute.isSimilar( position.parent ) ) {\n\t\treturn movePositionToTextNode( Position.createFromPosition( position ) );\n\t}\n\n\t// When position is inside text node - break it and place new position between two text nodes.\n\tif ( position.parent.is( 'text' ) ) {\n\t\tposition = breakTextNode( position );\n\t}\n\n\t// Create fake element that will represent position, and will not be merged with other attributes.\n\tconst fakePosition = new AttributeElement();\n\tfakePosition.priority = Number.POSITIVE_INFINITY;\n\tfakePosition.isSimilar = () => false;\n\n\t// Insert fake element in position location.\n\tposition.parent.insertChildren( position.offset, fakePosition );\n\n\t// Range around inserted fake attribute element.\n\tconst wrapRange = new Range( position, position.getShiftedBy( 1 ) );\n\n\t// Wrap fake element with attribute (it will also merge if possible).\n\twrap( wrapRange, attribute );\n\n\t// Remove fake element and place new position there.\n\tconst newPosition = new Position( fakePosition.parent, fakePosition.index );\n\tfakePosition.remove();\n\n\t// If position is placed between text nodes - merge them and return position inside.\n\tconst nodeBefore = newPosition.nodeBefore;\n\tconst nodeAfter = newPosition.nodeAfter;\n\n\tif ( nodeBefore instanceof Text && nodeAfter instanceof Text ) {\n\t\treturn mergeTextNodes( nodeBefore, nodeAfter );\n\t}\n\n\t// If position is next to text node - move position inside.\n\treturn movePositionToTextNode( newPosition );\n}\n\n/**\n * Unwraps nodes within provided range from attribute element.\n *\n * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-writer-invalid-range-container` when\n * {@link module:engine/view/range~Range#start start} and {@link module:engine/view/range~Range#end end} positions are not placed inside\n * same parent container.\n *\n * @param {module:engine/view/range~Range} range\n * @param {module:engine/view/attributeelement~AttributeElement} element\n */\nexport function unwrap( range, attribute ) {\n\tif ( !( attribute instanceof AttributeElement ) ) {\n\t\t/**\n\t\t * Attribute element need to be instance of attribute element.\n\t\t *\n\t\t * @error view-writer-unwrap-invalid-attribute\n\t\t */\n\t\tthrow new CKEditorError( 'view-writer-unwrap-invalid-attribute' );\n\t}\n\n\tvalidateRangeContainer( range );\n\n\t// If range is collapsed - nothing to unwrap.\n\tif ( range.isCollapsed ) {\n\t\treturn range;\n\t}\n\n\t// Range around one element - check if AttributeElement can be unwrapped partially when it's not similar.\n\t// For example:\n\t// <b class=\"foo bar\" title=\"baz\"></b> unwrap with:\t<b class=\"foo\"></p> result: <b class\"bar\" title=\"baz\"></b>\n\tif ( range.end.isEqual( range.start.getShiftedBy( 1 ) ) ) {\n\t\tconst node = range.start.nodeAfter;\n\n\t\t// Unwrap single attribute element.\n\t\tif ( !attribute.isSimilar( node ) && node instanceof AttributeElement && unwrapAttributeElement( attribute, node ) ) {\n\t\t\treturn range;\n\t\t}\n\t}\n\n\t// Break attributes at range start and end.\n\tconst { start: breakStart, end: breakEnd } = _breakAttributesRange( range, true );\n\tconst parentContainer = breakStart.parent;\n\n\t// Unwrap children located between break points.\n\tconst newRange = unwrapChildren( parentContainer, breakStart.offset, breakEnd.offset, attribute );\n\n\t// Merge attributes at the both ends and return a new range.\n\tconst start = mergeAttributes( newRange.start );\n\n\t// If start position was merged - move end position back.\n\tif ( !start.isEqual( newRange.start ) ) {\n\t\tnewRange.end.offset--;\n\t}\n\tconst end = mergeAttributes( newRange.end );\n\n\treturn new Range( start, end );\n}\n\n/**\n * Renames element by creating a copy of renamed element but with changed name and then moving contents of the\n * old element to the new one. Keep in mind that this will invalidate all {@link module:engine/view/position~Position positions} which\n * has renamed element as {@link module:engine/view/position~Position#parent a parent}.\n *\n * New element has to be created because `Element#tagName` property in DOM is readonly.\n *\n * Since this function creates a new element and removes the given one, the new element is returned to keep reference.\n *\n * @param {module:engine/view/containerelement~ContainerElement} viewElement Element to be renamed.\n * @param {String} newName New name for element.\n */\nexport function rename( viewElement, newName ) {\n\tconst newElement = new ContainerElement( newName, viewElement.getAttributes() );\n\n\tinsert( Position.createAfter( viewElement ), newElement );\n\tmove( Range.createIn( viewElement ), Position.createAt( newElement ) );\n\tremove( Range.createOn( viewElement ) );\n\n\treturn newElement;\n}\n\n// Returns first parent container of specified {@link module:engine/view/position~Position Position}.\n// Position's parent node is checked as first, then next parents are checked.\n// Note that {@link module:engine/view/documentfragment~DocumentFragment DocumentFragment} is treated like a container.\n//\n// @param {module:engine/view/position~Position} position Position used as a start point to locate parent container.\n// @returns {module:engine/view/containerelement~ContainerElement|module:engine/view/documentfragment~DocumentFragment|undefined}\n// Parent container element or `undefined` if container is not found.\nfunction getParentContainer( position ) {\n\tlet parent = position.parent;\n\n\twhile ( !isContainerOrFragment( parent ) ) {\n\t\tif ( !parent ) {\n\t\t\treturn undefined;\n\t\t}\n\t\tparent = parent.parent;\n\t}\n\n\treturn parent;\n}\n\n// Function used by both public breakAttributes (without splitting text nodes) and by other methods (with\n// splitting text nodes).\n//\n// @param {module:engine/view/range~Range} range Range which `start` and `end` positions will be used to break attributes.\n// @param {Boolean} [forceSplitText = false] If set to `true`, will break text nodes even if they are directly in\n// container element. This behavior will result in incorrect view state, but is needed by other view writing methods\n// which then fixes view state. Defaults to `false`.\n// @returns {module:engine/view/range~Range} New range with located at break positions.\nfunction _breakAttributesRange( range, forceSplitText = false ) {\n\tconst rangeStart = range.start;\n\tconst rangeEnd = range.end;\n\n\tvalidateRangeContainer( range );\n\n\t// Break at the collapsed position. Return new collapsed range.\n\tif ( range.isCollapsed ) {\n\t\tconst position = _breakAttributes( range.start, forceSplitText );\n\n\t\treturn new Range( position, position );\n\t}\n\n\tconst breakEnd = _breakAttributes( rangeEnd, forceSplitText );\n\tconst count = breakEnd.parent.childCount;\n\tconst breakStart = _breakAttributes( rangeStart, forceSplitText );\n\n\t// Calculate new break end offset.\n\tbreakEnd.offset += breakEnd.parent.childCount - count;\n\n\treturn new Range( breakStart, breakEnd );\n}\n\n// Function used by public breakAttributes (without splitting text nodes) and by other methods (with\n// splitting text nodes).\n//\n// Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-writer-cannot-break-empty-element` when break position\n// is placed inside {@link module:engine/view/emptyelement~EmptyElement EmptyElement}.\n//\n// Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-writer-cannot-break-ui-element` when break position\n// is placed inside {@link module:engine/view/uielement~UIElement UIElement}.\n//\n// @param {module:engine/view/position~Position} position Position where to break attributes.\n// @param {Boolean} [forceSplitText = false] If set to `true`, will break text nodes even if they are directly in\n// container element. This behavior will result in incorrect view state, but is needed by other view writing methods\n// which then fixes view state. Defaults to `false`.\n// @returns {module:engine/view/position~Position} New position after breaking the attributes.\nfunction _breakAttributes( position, forceSplitText = false ) {\n\tconst positionOffset = position.offset;\n\tconst positionParent = position.parent;\n\n\t// If position is placed inside EmptyElement - throw an exception as we cannot break inside.\n\tif ( position.parent.is( 'emptyElement' ) ) {\n\t\t/**\n\t\t * Cannot break inside EmptyElement instance.\n\t\t *\n\t\t * @error view-writer-cannot-break-empty-element\n\t\t */\n\t\tthrow new CKEditorError( 'view-writer-cannot-break-empty-element' );\n\t}\n\n\t// If position is placed inside UIElement - throw an exception as we cannot break inside.\n\tif ( position.parent.is( 'uiElement' ) ) {\n\t\t/**\n\t\t * Cannot break inside UIElement instance.\n\t\t *\n\t\t * @error view-writer-cannot-break-ui-element\n\t\t */\n\t\tthrow new CKEditorError( 'view-writer-cannot-break-ui-element' );\n\t}\n\n\t// There are no attributes to break and text nodes breaking is not forced.\n\tif ( !forceSplitText && positionParent.is( 'text' ) && isContainerOrFragment( positionParent.parent ) ) {\n\t\treturn Position.createFromPosition( position );\n\t}\n\n\t// Position's parent is container, so no attributes to break.\n\tif ( isContainerOrFragment( positionParent ) ) {\n\t\treturn Position.createFromPosition( position );\n\t}\n\n\t// Break text and start again in new position.\n\tif ( positionParent.is( 'text' ) ) {\n\t\treturn _breakAttributes( breakTextNode( position ), forceSplitText );\n\t}\n\n\tconst length = positionParent.childCount;\n\n\t// <p>foo<b><u>bar{}</u></b></p>\n\t// <p>foo<b><u>bar</u>[]</b></p>\n\t// <p>foo<b><u>bar</u></b>[]</p>\n\tif ( positionOffset == length ) {\n\t\tconst newPosition = new Position( positionParent.parent, positionParent.index + 1 );\n\n\t\treturn _breakAttributes( newPosition, forceSplitText );\n\t} else\n\t// <p>foo<b><u>{}bar</u></b></p>\n\t// <p>foo<b>[]<u>bar</u></b></p>\n\t// <p>foo{}<b><u>bar</u></b></p>\n\tif ( positionOffset === 0 ) {\n\t\tconst newPosition = new Position( positionParent.parent, positionParent.index );\n\n\t\treturn _breakAttributes( newPosition, forceSplitText );\n\t}\n\t// <p>foo<b><u>b{}ar</u></b></p>\n\t// <p>foo<b><u>b[]ar</u></b></p>\n\t// <p>foo<b><u>b</u>[]<u>ar</u></b></p>\n\t// <p>foo<b><u>b</u></b>[]<b><u>ar</u></b></p>\n\telse {\n\t\tconst offsetAfter = positionParent.index + 1;\n\n\t\t// Break element.\n\t\tconst clonedNode = positionParent.clone();\n\n\t\t// Insert cloned node to position's parent node.\n\t\tpositionParent.parent.insertChildren( offsetAfter, clonedNode );\n\n\t\t// Get nodes to move.\n\t\tconst count = positionParent.childCount - positionOffset;\n\t\tconst nodesToMove = positionParent.removeChildren( positionOffset, count );\n\n\t\t// Move nodes to cloned node.\n\t\tclonedNode.appendChildren( nodesToMove );\n\n\t\t// Create new position to work on.\n\t\tconst newPosition = new Position( positionParent.parent, offsetAfter );\n\n\t\treturn _breakAttributes( newPosition, forceSplitText );\n\t}\n}\n\n// Unwraps children from provided `attribute`. Only children contained in `parent` element between\n// `startOffset` and `endOffset` will be unwrapped.\n//\n// @param {module:engine/view/element~Element} parent\n// @param {Number} startOffset\n// @param {Number} endOffset\n// @param {module:engine/view/element~Element} attribute\nfunction unwrapChildren( parent, startOffset, endOffset, attribute ) {\n\tlet i = startOffset;\n\tconst unwrapPositions = [];\n\n\t// Iterate over each element between provided offsets inside parent.\n\twhile ( i < endOffset ) {\n\t\tconst child = parent.getChild( i );\n\n\t\t// If attributes are the similar, then unwrap.\n\t\tif (  child.isSimilar( attribute ) ) {\n\t\t\tconst unwrapped = child.getChildren();\n\t\t\tconst count = child.childCount;\n\n\t\t\t// Replace wrapper element with its children\n\t\t\tchild.remove();\n\t\t\tparent.insertChildren( i, unwrapped );\n\n\t\t\t// Save start and end position of moved items.\n\t\t\tunwrapPositions.push(\n\t\t\t\tnew Position( parent, i ),\n\t\t\t\tnew Position( parent, i + count )\n\t\t\t);\n\n\t\t\t// Skip elements that were unwrapped. Assuming that there won't be another element to unwrap in child\n\t\t\t// elements.\n\t\t\ti += count;\n\t\t\tendOffset += count - 1;\n\t\t} else {\n\t\t\t// If other nested attribute is found start unwrapping there.\n\t\t\tif ( child.is( 'attributeElement' ) ) {\n\t\t\t\tunwrapChildren( child, 0, child.childCount, attribute );\n\t\t\t}\n\n\t\t\ti++;\n\t\t}\n\t}\n\n\t// Merge at each unwrap.\n\tlet offsetChange = 0;\n\n\tfor ( let position of unwrapPositions ) {\n\t\tposition.offset -= offsetChange;\n\n\t\t// Do not merge with elements outside selected children.\n\t\tif ( position.offset == startOffset || position.offset == endOffset ) {\n\t\t\tcontinue;\n\t\t}\n\n\t\tconst newPosition = mergeAttributes( position );\n\n\t\t// If nodes were merged - other merge offsets will change.\n\t\tif ( !newPosition.isEqual( position ) ) {\n\t\t\toffsetChange++;\n\t\t\tendOffset--;\n\t\t}\n\t}\n\n\treturn Range.createFromParentsAndOffsets( parent, startOffset, parent, endOffset );\n}\n\n// Wraps children with provided `attribute`. Only children contained in `parent` element between\n// `startOffset` and `endOffset` will be wrapped.\n//\n// @param {module:engine/view/element~Element} parent\n// @param {Number} startOffset\n// @param {Number} endOffset\n// @param {module:engine/view/element~Element} attribute\nfunction wrapChildren( parent, startOffset, endOffset, attribute ) {\n\tlet i = startOffset;\n\tconst wrapPositions = [];\n\n\twhile ( i < endOffset ) {\n\t\tconst child = parent.getChild( i );\n\t\tconst isText = child.is( 'text' );\n\t\tconst isAttribute = child.is( 'attributeElement' );\n\t\tconst isEmpty = child.is( 'emptyElement' );\n\t\tconst isUI = child.is( 'uiElement' );\n\n\t\t// Wrap text, empty elements, ui elements or attributes with higher or equal priority.\n\t\tif ( isText || isEmpty || isUI || ( isAttribute && attribute.priority <= child.priority ) ) {\n\t\t\t// Clone attribute.\n\t\t\tconst newAttribute = attribute.clone();\n\n\t\t\t// Wrap current node with new attribute;\n\t\t\tchild.remove();\n\t\t\tnewAttribute.appendChildren( child );\n\t\t\tparent.insertChildren( i, newAttribute );\n\n\t\t\twrapPositions.push(\tnew Position( parent, i ) );\n\t\t}\n\t\t// If other nested attribute is found start wrapping there.\n\t\telse if ( isAttribute ) {\n\t\t\twrapChildren( child, 0, child.childCount, attribute );\n\t\t}\n\n\t\ti++;\n\t}\n\n\t// Merge at each wrap.\n\tlet offsetChange = 0;\n\n\tfor ( let position of wrapPositions ) {\n\t\tposition.offset -= offsetChange;\n\n\t\t// Do not merge with elements outside selected children.\n\t\tif ( position.offset == startOffset ) {\n\t\t\tcontinue;\n\t\t}\n\n\t\tconst newPosition = mergeAttributes( position );\n\n\t\t// If nodes were merged - other merge offsets will change.\n\t\tif ( !newPosition.isEqual( position ) ) {\n\t\t\toffsetChange++;\n\t\t\tendOffset--;\n\t\t}\n\t}\n\n\treturn Range.createFromParentsAndOffsets( parent, startOffset, parent, endOffset );\n}\n\n// Returns new position that is moved to near text node. Returns same position if there is no text node before of after\n// specified position.\n//\n//\t\t<p>foo[]</p>  ->  <p>foo{}</p>\n//\t\t<p>[]foo</p>  ->  <p>{}foo</p>\n//\n// @param {module:engine/view/position~Position} position\n// @returns {module:engine/view/position~Position} Position located inside text node or same position if there is no text nodes\n// before or after position location.\nfunction movePositionToTextNode( position ) {\n\tconst nodeBefore = position.nodeBefore;\n\n\tif ( nodeBefore && nodeBefore.is( 'text' ) ) {\n\t\treturn new Position( nodeBefore, nodeBefore.data.length );\n\t}\n\n\tconst nodeAfter = position.nodeAfter;\n\n\tif ( nodeAfter && nodeAfter.is( 'text' ) ) {\n\t\treturn new Position( nodeAfter, 0 );\n\t}\n\n\treturn position;\n}\n\n// Breaks text node into two text nodes when possible.\n//\n//\t\t<p>foo{}bar</p> -> <p>foo[]bar</p>\n//\t\t<p>{}foobar</p> -> <p>[]foobar</p>\n//\t\t<p>foobar{}</p> -> <p>foobar[]</p>\n//\n// @param {module:engine/view/position~Position} position Position that need to be placed inside text node.\n// @returns {module:engine/view/position~Position} New position after breaking text node.\nfunction breakTextNode( position ) {\n\tif ( position.offset == position.parent.data.length ) {\n\t\treturn new Position( position.parent.parent, position.parent.index + 1 );\n\t}\n\n\tif ( position.offset === 0 ) {\n\t\treturn new Position( position.parent.parent, position.parent.index );\n\t}\n\n\t// Get part of the text that need to be moved.\n\tconst textToMove = position.parent.data.slice( position.offset );\n\n\t// Leave rest of the text in position's parent.\n\tposition.parent.data = position.parent.data.slice( 0, position.offset );\n\n\t// Insert new text node after position's parent text node.\n\tposition.parent.parent.insertChildren( position.parent.index + 1, new Text( textToMove ) );\n\n\t// Return new position between two newly created text nodes.\n\treturn new Position( position.parent.parent, position.parent.index + 1 );\n}\n\n// Merges two text nodes into first node. Removes second node and returns merge position.\n//\n// @param {module:engine/view/text~Text} t1 First text node to merge. Data from second text node will be moved at the end of\n// this text node.\n// @param {module:engine/view/text~Text} t2 Second text node to merge. This node will be removed after merging.\n// @returns {module:engine/view/position~Position} Position after merging text nodes.\nfunction mergeTextNodes( t1, t2 ) {\n\t// Merge text data into first text node and remove second one.\n\tconst nodeBeforeLength = t1.data.length;\n\tt1.data += t2.data;\n\tt2.remove();\n\n\treturn new Position( t1, nodeBeforeLength );\n}\n\n// Wraps one {@link module:engine/view/attributeelement~AttributeElement AttributeElement} into another by merging them if possible.\n// Two AttributeElements can be merged when there is no attribute or style conflicts between them.\n// When merging is possible - all attributes, styles and classes are moved from wrapper element to element being\n// wrapped.\n//\n// @param {module:engine/view/attributeelement~AttributeElement} wrapper Wrapper AttributeElement.\n// @param {module:engine/view/attributeelement~AttributeElement} toWrap AttributeElement to wrap using wrapper element.\n// @returns {Boolean} Returns `true` if elements are merged.\nfunction wrapAttributeElement( wrapper, toWrap ) {\n\t// Can't merge if name or priority differs.\n\tif ( wrapper.name !== toWrap.name || wrapper.priority !== toWrap.priority ) {\n\t\treturn false;\n\t}\n\n\t// Check if attributes can be merged.\n\tfor ( let key of wrapper.getAttributeKeys() ) {\n\t\t// Classes and styles should be checked separately.\n\t\tif ( key === 'class' || key === 'style' ) {\n\t\t\tcontinue;\n\t\t}\n\n\t\t// If some attributes are different we cannot wrap.\n\t\tif ( toWrap.hasAttribute( key ) && toWrap.getAttribute( key ) !== wrapper.getAttribute( key ) ) {\n\t\t\treturn false;\n\t\t}\n\t}\n\n\t// Check if styles can be merged.\n\tfor ( let key of wrapper.getStyleNames() ) {\n\t\tif ( toWrap.hasStyle( key ) && toWrap.getStyle( key ) !== wrapper.getStyle( key ) ) {\n\t\t\treturn false;\n\t\t}\n\t}\n\n\t// Move all attributes/classes/styles from wrapper to wrapped AttributeElement.\n\tfor ( let key of wrapper.getAttributeKeys() ) {\n\t\t// Classes and styles should be checked separately.\n\t\tif ( key === 'class' || key === 'style' ) {\n\t\t\tcontinue;\n\t\t}\n\n\t\t// Move only these attributes that are not present - other are similar.\n\t\tif ( !toWrap.hasAttribute( key ) ) {\n\t\t\ttoWrap.setAttribute( key, wrapper.getAttribute( key ) );\n\t\t}\n\t}\n\n\tfor ( let key of wrapper.getStyleNames() ) {\n\t\tif ( !toWrap.hasStyle( key ) ) {\n\t\t\ttoWrap.setStyle( key, wrapper.getStyle( key ) );\n\t\t}\n\t}\n\n\tfor ( let key of wrapper.getClassNames() ) {\n\t\tif ( !toWrap.hasClass( key ) ) {\n\t\t\ttoWrap.addClass( key );\n\t\t}\n\t}\n\n\treturn true;\n}\n\n// Unwraps {@link module:engine/view/attributeelement~AttributeElement AttributeElement} from another by removing corresponding attributes,\n// classes and styles. All attributes, classes and styles from wrapper should be present inside element being unwrapped.\n//\n// @param {module:engine/view/attributeelement~AttributeElement} wrapper Wrapper AttributeElement.\n// @param {module:engine/view/attributeelement~AttributeElement} toUnwrap AttributeElement to unwrap using wrapper element.\n// @returns {Boolean} Returns `true` if elements are unwrapped.\nfunction unwrapAttributeElement( wrapper, toUnwrap ) {\n\t// Can't unwrap if name or priority differs.\n\tif ( wrapper.name !== toUnwrap.name || wrapper.priority !== toUnwrap.priority ) {\n\t\treturn false;\n\t}\n\n\t// Check if AttributeElement has all wrapper attributes.\n\tfor ( let key of wrapper.getAttributeKeys() ) {\n\t\t// Classes and styles should be checked separately.\n\t\tif ( key === 'class' || key === 'style' ) {\n\t\t\tcontinue;\n\t\t}\n\n\t\t// If some attributes are missing or different we cannot unwrap.\n\t\tif ( !toUnwrap.hasAttribute( key ) || toUnwrap.getAttribute( key ) !== wrapper.getAttribute( key ) ) {\n\t\t\treturn false;\n\t\t}\n\t}\n\n\t// Check if AttributeElement has all wrapper classes.\n\tif ( !toUnwrap.hasClass( ...wrapper.getClassNames() ) ) {\n\t\treturn false;\n\t}\n\n\t// Check if AttributeElement has all wrapper styles.\n\tfor ( let key of wrapper.getStyleNames() ) {\n\t\t// If some styles are missing or different we cannot unwrap.\n\t\tif ( !toUnwrap.hasStyle( key ) || toUnwrap.getStyle( key ) !== wrapper.getStyle( key ) ) {\n\t\t\treturn false;\n\t\t}\n\t}\n\n\t// Remove all wrapper's attributes from unwrapped element.\n\tfor ( let key of wrapper.getAttributeKeys() ) {\n\t\t// Classes and styles should be checked separately.\n\t\tif ( key === 'class' || key === 'style' ) {\n\t\t\tcontinue;\n\t\t}\n\n\t\ttoUnwrap.removeAttribute( key );\n\t}\n\n\t// Remove all wrapper's classes from unwrapped element.\n\ttoUnwrap.removeClass( ...wrapper.getClassNames() );\n\n\t// Remove all wrapper's styles from unwrapped element.\n\ttoUnwrap.removeStyle( ...wrapper.getStyleNames() );\n\n\treturn true;\n}\n\n// Returns `true` if range is located in same {@link module:engine/view/attributeelement~AttributeElement AttributeElement}\n// (`start` and `end` positions are located inside same {@link module:engine/view/attributeelement~AttributeElement AttributeElement}),\n// starts on 0 offset and ends after last child node.\n//\n// @param {module:engine/view/range~Range} Range\n// @returns {Boolean}\nfunction rangeSpansOnAllChildren( range ) {\n\treturn range.start.parent == range.end.parent && range.start.parent.is( 'attributeElement' ) &&\n\t\trange.start.offset === 0 && range.end.offset === range.start.parent.childCount;\n}\n\n// Checks if provided nodes are valid to insert. Checks if each node is an instance of\n// {@link module:engine/view/text~Text Text} or {@link module:engine/view/attributeelement~AttributeElement AttributeElement},\n// {@link module:engine/view/containerelement~ContainerElement ContainerElement},\n// {@link module:engine/view/emptyelement~EmptyElement EmptyElement} or\n// {@link module:engine/view/uielement~UIElement UIElement}.\n//\n// Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-writer-insert-invalid-node` when nodes to insert\n// contains instances that are not {@link module:engine/view/text~Text Texts},\n// {@link module:engine/view/emptyelement~EmptyElement EmptyElements},\n// {@link module:engine/view/uielement~UIElement UIElements},\n// {@link module:engine/view/attributeelement~AttributeElement AttributeElements} or\n// {@link module:engine/view/containerelement~ContainerElement ContainerElements}.\n//\n// @param Iterable.<module:engine/view/text~Text|module:engine/view/attributeelement~AttributeElement\n// |module:engine/view/containerelement~ContainerElement> nodes\nfunction validateNodesToInsert( nodes ) {\n\tfor ( let node of nodes ) {\n\t\tif ( !validNodesToInsert.some( ( validNode => node instanceof validNode ) ) ) {\n\t\t\t/**\n\t\t\t * Inserted nodes should be valid to insert. of {@link module:engine/view/attributeelement~AttributeElement AttributeElement},\n\t\t\t * {@link module:engine/view/containerelement~ContainerElement ContainerElement},\n\t\t\t * {@link module:engine/view/emptyelement~EmptyElement EmptyElement},\n\t\t\t * {@link module:engine/view/uielement~UIElement UIElement}, {@link module:engine/view/text~Text Text}.\n\t\t\t *\n\t\t\t * @error view-writer-insert-invalid-node\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'view-writer-insert-invalid-node' );\n\t\t}\n\n\t\tif ( !node.is( 'text' ) ) {\n\t\t\tvalidateNodesToInsert( node.getChildren() );\n\t\t}\n\t}\n}\n\nconst validNodesToInsert = [ Text, AttributeElement, ContainerElement, EmptyElement, UIElement ];\n\n// Checks if node is ContainerElement or DocumentFragment, because in most cases they should be treated the same way.\n//\n// @param {module:engine/view/node~Node} node\n// @returns {Boolean} Returns `true` if node is instance of ContainerElement or DocumentFragment.\nfunction isContainerOrFragment( node ) {\n\treturn node && ( node.is( 'containerElement' ) || node.is( 'documentFragment' ) );\n}\n\n// Checks if {@link module:engine/view/range~Range#start range start} and {@link module:engine/view/range~Range#end range end} are placed\n// inside same {@link module:engine/view/containerelement~ContainerElement container element}.\n// Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-writer-invalid-range-container` when validation fails.\n//\n// @param {module:engine/view/range~Range} range\nfunction validateRangeContainer( range ) {\n\tconst startContainer = getParentContainer( range.start );\n\tconst endContainer = getParentContainer( range.end );\n\n\tif ( !startContainer || !endContainer || startContainer !== endContainer ) {\n\t\t/**\n\t\t * Range container is invalid. This can happen if {@link module:engine/view/range~Range#start range start} and\n\t\t * {@link module:engine/view/range~Range#end range end} positions are not placed inside same container or\n\t\t * parent container for these positions cannot be found.\n\t\t *\n\t\t * @error view-writer-invalid-range-container\n\t\t */\n\t\tthrow new CKEditorError( 'view-writer-invalid-range-container' );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/view/writer.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/collection\n */\n\nimport EmitterMixin from './emittermixin';\nimport CKEditorError from './ckeditorerror';\nimport uid from './uid';\nimport mix from './mix';\n\n/**\n * Collections are ordered sets of objects. Items in the collection can be retrieved by their indexes\n * in the collection (like in an array) or by their ids.\n *\n * If an object without an `id` property is being added to the collection, the `id` property will be generated\n * automatically. Note that the automatically generated id is unique only within this single collection instance.\n *\n * By default an item in the collection is identified by its `id` property. The name of the identifier can be\n * configured through the constructor of the collection.\n *\n * @mixes EventEmitter\n */\nexport default class Collection {\n\t/**\n\t * Creates a new Collection instance.\n\t *\n\t * @param {Iterable} [items] Items to be added to the collection.\n\t * @param {Object} options The options object.\n\t * @param {String} [options.idProperty='id'] The name of the property which is considered to identify an item.\n\t */\n\tconstructor( options ) {\n\t\t/**\n\t\t * The internal list of items in the collection.\n\t\t *\n\t\t * @private\n\t\t * @member {Object[]}\n\t\t */\n\t\tthis._items = [];\n\n\t\t/**\n\t\t * The internal map of items in the collection.\n\t\t *\n\t\t * @private\n\t\t * @member {Map}\n\t\t */\n\t\tthis._itemMap = new Map();\n\n\t\t/**\n\t\t * The name of the property which is considered to identify an item.\n\t\t *\n\t\t * @private\n\t\t * @member {String}\n\t\t */\n\t\tthis._idProperty = options && options.idProperty || 'id';\n\t}\n\n\t/**\n\t * The number of items available in the collection.\n\t *\n\t * @member {Number} #length\n\t */\n\tget length() {\n\t\treturn this._items.length;\n\t}\n\n\t/**\n\t * Adds an item into the collection.\n\t *\n\t * If the item does not have an id, then it will be automatically generated and set on the item.\n\t *\n\t * @chainable\n\t * @param {Object} item\n\t * @param {Number} [index] The position of the item in the collection. The item\n\t * is pushed to the collection when `index` not specified.\n\t * @fires add\n\t */\n\tadd( item, index ) {\n\t\tlet itemId;\n\t\tconst idProperty = this._idProperty;\n\n\t\tif ( ( idProperty in item ) ) {\n\t\t\titemId = item[ idProperty ];\n\n\t\t\tif ( typeof itemId != 'string' ) {\n\t\t\t\t/**\n\t\t\t\t * This item's id should be a string.\n\t\t\t\t *\n\t\t\t\t * @error collection-add-invalid-id\n\t\t\t\t */\n\t\t\t\tthrow new CKEditorError( 'collection-add-invalid-id' );\n\t\t\t}\n\n\t\t\tif ( this.get( itemId ) ) {\n\t\t\t\t/**\n\t\t\t\t * This item already exists in the collection.\n\t\t\t\t *\n\t\t\t\t * @error collection-add-item-already-exists\n\t\t\t\t */\n\t\t\t\tthrow new CKEditorError( 'collection-add-item-already-exists' );\n\t\t\t}\n\t\t} else {\n\t\t\titem[ idProperty ] = itemId = uid();\n\t\t}\n\n\t\t// TODO: Use ES6 default function argument.\n\t\tif ( index === undefined ) {\n\t\t\tindex = this._items.length;\n\t\t} else if ( index > this._items.length || index < 0 ) {\n\t\t\t/**\n\t\t\t * The index number has invalid value.\n\t\t\t *\n\t\t\t * @error collection-add-item-bad-index\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'collection-add-item-invalid-index' );\n\t\t}\n\n\t\tthis._items.splice( index, 0, item );\n\n\t\tthis._itemMap.set( itemId, item );\n\n\t\tthis.fire( 'add', item, index );\n\n\t\treturn this;\n\t}\n\n\t/**\n\t * Gets item by its id or index.\n\t *\n\t * @param {String|Number} idOrIndex The item id or index in the collection.\n\t * @returns {Object} The requested item or `null` if such item does not exist.\n\t */\n\tget( idOrIndex ) {\n\t\tlet item;\n\n\t\tif ( typeof idOrIndex == 'string' ) {\n\t\t\titem = this._itemMap.get( idOrIndex );\n\t\t} else if ( typeof idOrIndex == 'number' ) {\n\t\t\titem = this._items[ idOrIndex ];\n\t\t} else {\n\t\t\t/**\n\t\t\t * Index or id must be given.\n\t\t\t *\n\t\t\t * @error collection-get-invalid-arg\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'collection-get-invalid-arg: Index or id must be given.' );\n\t\t}\n\n\t\treturn item || null;\n\t}\n\n\t/**\n\t * Gets index of item in the collection.\n\t * When item is not defined in the collection then index will be equal -1.\n\t *\n\t * @param {String|Object} idOrItem The item or its id in the collection.\n\t * @returns {Number} Index of given item.\n\t */\n\tgetIndex( idOrItem ) {\n\t\tlet item;\n\n\t\tif ( typeof idOrItem == 'string' ) {\n\t\t\titem = this._itemMap.get( idOrItem );\n\t\t} else {\n\t\t\titem = idOrItem;\n\t\t}\n\n\t\treturn this._items.indexOf( item );\n\t}\n\n\t/**\n\t * Removes an item from the collection.\n\t *\n\t * @param {Object|Number|String} subject The item to remove, its id or index in the collection.\n\t * @returns {Object} The removed item.\n\t * @fires remove\n\t */\n\tremove( subject ) {\n\t\tlet index, id, item;\n\t\tlet itemDoesNotExist = false;\n\t\tconst idProperty = this._idProperty;\n\n\t\tif ( typeof subject == 'string' ) {\n\t\t\tid = subject;\n\t\t\titem = this._itemMap.get( id );\n\t\t\titemDoesNotExist = !item;\n\n\t\t\tif ( item ) {\n\t\t\t\tindex = this._items.indexOf( item );\n\t\t\t}\n\t\t} else if ( typeof subject == 'number' ) {\n\t\t\tindex = subject;\n\t\t\titem = this._items[ index ];\n\t\t\titemDoesNotExist = !item;\n\n\t\t\tif ( item ) {\n\t\t\t\tid = item[ idProperty ];\n\t\t\t}\n\t\t} else {\n\t\t\titem = subject;\n\t\t\tid = item[ idProperty ];\n\t\t\tindex = this._items.indexOf( item );\n\t\t\titemDoesNotExist = ( index == -1 || !this._itemMap.get( id ) );\n\t\t}\n\n\t\tif ( itemDoesNotExist ) {\n\t\t\t/**\n\t\t\t * Item not found.\n\t\t\t *\n\t\t\t * @error collection-remove-404\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'collection-remove-404: Item not found.' );\n\t\t}\n\n\t\tthis._items.splice( index, 1 );\n\t\tthis._itemMap.delete( id );\n\n\t\tthis.fire( 'remove', item );\n\n\t\treturn item;\n\t}\n\n\t/**\n\t * Executes the callback for each item in the collection and composes an array or values returned by this callback.\n\t *\n\t * @param {Function} callback\n\t * @param {Object} callback.item\n\t * @param {Number} callback.index\n\t * @params {Object} ctx Context in which the `callback` will be called.\n\t * @returns {Array} The result of mapping.\n\t */\n\tmap( callback, ctx ) {\n\t\treturn this._items.map( callback, ctx );\n\t}\n\n\t/**\n\t * Finds the first item in the collection for which the `callback` returns a true value.\n\t *\n\t * @param {Function} callback\n\t * @param {Object} callback.item\n\t * @param {Number} callback.index\n\t * @returns {Object} The item for which `callback` returned a true value.\n\t * @params {Object} ctx Context in which the `callback` will be called.\n\t */\n\tfind( callback, ctx ) {\n\t\treturn this._items.find( callback, ctx );\n\t}\n\n\t/**\n\t * Returns an array with items for which the `callback` returned a true value.\n\t *\n\t * @param {Function} callback\n\t * @param {Object} callback.item\n\t * @param {Number} callback.index\n\t * @params {Object} ctx Context in which the `callback` will be called.\n\t * @returns {Object[]} The array with matching items.\n\t */\n\tfilter( callback, ctx ) {\n\t\treturn this._items.filter( callback, ctx );\n\t}\n\n\t/**\n\t * Removes all items from the collection.\n\t */\n\tclear() {\n\t\twhile ( this.length ) {\n\t\t\tthis.remove( 0 );\n\t\t}\n\t}\n\n\t/**\n\t * Collection iterator.\n\t */\n\t[ Symbol.iterator ]() {\n\t\treturn this._items[ Symbol.iterator ]();\n\t}\n\n\t/**\n\t * Fired when an item is added to the collection.\n\t *\n\t * @event add\n\t * @param {Object} item The added item.\n\t */\n\n\t/**\n\t * Fired when an item is removed from the collection.\n\t *\n\t * @event remove\n\t * @param {Object} item The removed item.\n\t */\n}\n\nmix( Collection, EmitterMixin );\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/collection.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/dom/emittermixin\n */\n\nimport EmitterMixin from '../emittermixin';\nimport { _getEmitterListenedTo, _setEmitterId } from '../emittermixin';\nimport uid from '../uid';\nimport extend from '../lib/lodash/extend';\nimport isNative from '../lib/lodash/isNative';\n\n/**\n * Mixin that injects the DOM events API into its host. It provides the API\n * compatible with {@link module:utils/emittermixin~EmitterMixin}.\n *\n * DOM emitter mixin is by default available in the {@link module:ui/view~View} class,\n * but it can also be mixed into any other class:\n *\n *\t\timport mix from '../utils/mix.js';\n *\t\timport DomEmitterMixin from '../utils/dom/emittermixin.js';\n *\n *\t\tclass SomeView {}\n *\t\tmix( SomeView, DomEmitterMixin );\n *\n *\t\tconst view = new SomeView();\n *\t\tview.listenTo( domElement, ( evt, domEvt ) => {\n *\t\t\tconsole.log( evt, domEvt );\n *\t\t} );\n *\n * @mixin module:utils/dom/emittermixin~EmitterMixin\n * @mixes module:utils/emittermixin~EmitterMixin\n * @implements module:utils/dom/emittermixin~Emitter\n */\nconst DomEmitterMixin = extend( {}, EmitterMixin, {\n\t/**\n\t * Registers a callback function to be executed when an event is fired in a specific Emitter or DOM Node.\n\t * It is backwards compatible with {@link module:utils/emittermixin~EmitterMixin#listenTo}.\n\t *\n\t * @param {module:utils/emittermixin~Emitter|Node} emitter The object that fires the event.\n\t * @param {String} event The name of the event.\n\t * @param {Function} callback The function to be called on event.\n\t * @param {Object} [options={}] Additional options.\n\t * @param {module:utils/priorities~PriorityString|Number} [options.priority='normal'] The priority of this event callback. The higher\n\t * the priority value the sooner the callback will be fired. Events having the same priority are called in the\n\t * order they were added.\n\t * @param {Object} [options.context] The object that represents `this` in the callback. Defaults to the object firing the event.\n\t * @param {Boolean} [options.useCapture=false] Indicates that events of this type will be dispatched to the registered\n\t * listener before being dispatched to any EventTarget beneath it in the DOM tree.\n\t *\n\t * @method module:utils/dom/emittermixin~EmitterMixin#listenTo\n\t */\n\tlistenTo( ...args ) {\n\t\tconst emitter = args[ 0 ];\n\n\t\t// Check if emitter is an instance of DOM Node. If so, replace the argument with\n\t\t// corresponding ProxyEmitter (or create one if not existing).\n\t\tif ( isDomNode( emitter ) ) {\n\t\t\targs[ 0 ] = this._getProxyEmitter( emitter ) || new ProxyEmitter( emitter );\n\t\t}\n\n\t\t// Execute parent class method with Emitter (or ProxyEmitter) instance.\n\t\tEmitterMixin.listenTo.apply( this, args );\n\t},\n\n\t/**\n\t * Stops listening for events. It can be used at different levels:\n\t * It is backwards compatible with {@link module:utils/emittermixin~EmitterMixin#listenTo}.\n\t *\n\t * * To stop listening to a specific callback.\n\t * * To stop listening to a specific event.\n\t * * To stop listening to all events fired by a specific object.\n\t * * To stop listening to all events fired by all object.\n\t *\n\t * @param {module:utils/emittermixin~Emitter|Node} [emitter] The object to stop listening to. If omitted, stops it for all objects.\n\t * @param {String} [event] (Requires the `emitter`) The name of the event to stop listening to. If omitted, stops it\n\t * for all events from `emitter`.\n\t * @param {Function} [callback] (Requires the `event`) The function to be removed from the call list for the given\n\t * `event`.\n\t *\n\t * @method module:utils/dom/emittermixin~EmitterMixin#stopListening\n\t */\n\tstopListening( ...args ) {\n\t\tconst emitter = args[ 0 ];\n\n\t\t// Check if emitter is an instance of DOM Node. If so, replace the argument with corresponding ProxyEmitter.\n\t\tif ( isDomNode( emitter ) ) {\n\t\t\tlet proxy = this._getProxyEmitter( emitter );\n\n\t\t\t// Element has no listeners.\n\t\t\tif ( !proxy ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\targs[ 0 ] = proxy;\n\t\t}\n\n\t\t// Execute parent class method with Emitter (or ProxyEmitter) instance.\n\t\tEmitterMixin.stopListening.apply( this, args );\n\t},\n\n\t/**\n\t * Retrieves ProxyEmitter instance for given DOM Node residing in this Host.\n\t *\n\t * @param {Node} node DOM Node of the ProxyEmitter.\n\t * @method module:utils/dom/emittermixin~EmitterMixin#_getProxyEmitter\n\t * @return {module:utils/dom/emittermixin~ProxyEmitter} ProxyEmitter instance or null.\n\t */\n\t_getProxyEmitter( node ) {\n\t\treturn _getEmitterListenedTo( this, getNodeUID( node ) );\n\t}\n} );\n\nexport default DomEmitterMixin;\n\n/**\n * Creates a ProxyEmitter instance. Such an instance is a bridge between a DOM Node firing events\n * and any Host listening to them. It is backwards compatible with {@link module:utils/emittermixin~EmitterMixin#on}.\n *\n *                                  listenTo( click, ... )\n *                    +-----------------------------------------+\n *                    |              stopListening( ... )       |\n *     +----------------------------+                           |             addEventListener( click, ... )\n *     | Host                       |                           |   +---------------------------------------------+\n *     +----------------------------+                           |   |       removeEventListener( click, ... )     |\n *     | _listeningTo: {            |                +----------v-------------+                                   |\n *     |   UID: {                   |                | ProxyEmitter           |                                   |\n *     |     emitter: ProxyEmitter, |                +------------------------+                      +------------v----------+\n *     |     callbacks: {           |                | events: {              |                      | Node (HTMLElement)    |\n *     |       click: [ callbacks ] |                |   click: [ callbacks ] |                      +-----------------------+\n *     |     }                      |                | },                     |                      | data-ck-expando: UID  |\n *     |   }                        |                | _domNode: Node,        |                      +-----------------------+\n *     | }                          |                | _domListeners: {},     |                                   |\n *     | +------------------------+ |                | _emitterId: UID        |                                   |\n *     | | DomEmitterMixin        | |                +--------------^---------+                                   |\n *     | +------------------------+ |                           |   |                                             |\n *     +--------------^-------------+                           |   +---------------------------------------------+\n *                    |                                         |                  click (DOM Event)\n *                    +-----------------------------------------+\n *                                fire( click, DOM Event )\n *\n * @mixes module:utils/emittermixin~EmitterMixin\n * @implements module:utils/dom/emittermixin~Emitter\n * @private\n */\nclass ProxyEmitter {\n\t/**\n\t * @param {Node} node DOM Node that fires events.\n\t * @returns {Object} ProxyEmitter instance bound to the DOM Node.\n\t */\n\tconstructor( node ) {\n\t\t// Set emitter ID to match DOM Node \"expando\" property.\n\t\t_setEmitterId( this, getNodeUID( node ) );\n\n\t\t// Remember the DOM Node this ProxyEmitter is bound to.\n\t\tthis._domNode = node;\n\t}\n}\n\nextend( ProxyEmitter.prototype, EmitterMixin, {\n\t/**\n\t * Collection of native DOM listeners.\n\t *\n\t * @private\n\t * @member {Object} module:utils/dom/emittermixin~ProxyEmitter#_domListeners\n\t */\n\n\t/**\n\t * Registers a callback function to be executed when an event is fired.\n\t *\n\t * It attaches a native DOM listener to the DOM Node. When fired,\n\t * a corresponding Emitter event will also fire with DOM Event object as an argument.\n\t *\n\t * @param {String} event The name of the event.\n\t * @param {Function} callback The function to be called on event.\n\t * @param {Object} [options={}] Additional options.\n\t * @param {module:utils/priorities~PriorityString|Number} [options.priority='normal'] The priority of this event callback. The higher\n\t * the priority value the sooner the callback will be fired. Events having the same priority are called in the\n\t * order they were added.\n\t * @param {Object} [options.context] The object that represents `this` in the callback. Defaults to the object firing the event.\n\t * @param {Boolean} [options.useCapture=false] Indicates that events of this type will be dispatched to the registered\n\t * listener before being dispatched to any EventTarget beneath it in the DOM tree.\n\t *\n\t * @method module:utils/dom/emittermixin~ProxyEmitter#on\n\t */\n\ton( event, callback, options = {} ) {\n\t\t// Execute parent class method first.\n\t\tEmitterMixin.on.apply( this, arguments );\n\n\t\t// If the DOM Listener for given event already exist it is pointless\n\t\t// to attach another one.\n\t\tif ( this._domListeners && this._domListeners[ event ] ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst domListener = this._createDomListener( event );\n\n\t\t// Attach the native DOM listener to DOM Node.\n\t\tthis._domNode.addEventListener( event, domListener, !!options.useCapture );\n\n\t\tif ( !this._domListeners ) {\n\t\t\tthis._domListeners = {};\n\t\t}\n\n\t\t// Store the native DOM listener in this ProxyEmitter. It will be helpful\n\t\t// when stopping listening to the event.\n\t\tthis._domListeners[ event ] = domListener;\n\t},\n\n\t/**\n\t * Stops executing the callback on the given event.\n\t *\n\t * @param {String} event The name of the event.\n\t * @param {Function} callback The function to stop being called.\n\t * @param {Object} [context] The context object to be removed, pared with the given callback. To handle cases where\n\t * the same callback is used several times with different contexts.\n\t *\n\t * @method module:utils/dom/emittermixin~ProxyEmitter#off\n\t */\n\toff( event ) {\n\t\t// Execute parent class method first.\n\t\tEmitterMixin.off.apply( this, arguments );\n\n\t\tlet events;\n\n\t\t// Remove native DOM listeners which are orphans. If no callbacks\n\t\t// are awaiting given event, detach native DOM listener from DOM Node.\n\t\t// See: {@link on}.\n\n\t\tif ( this._domListeners[ event ] && ( !( events = this._events[ event ] ) || !events.callbacks.length ) ) {\n\t\t\tthis._domListeners[ event ].removeListener();\n\t\t}\n\t},\n\n\t/**\n\t * Create a native DOM listener callback. When the native DOM event\n\t * is fired it will fire corresponding event on this ProxyEmitter.\n\t * Note: A native DOM Event is passed as an argument.\n\t *\n\t * @private\n\t * @param {String} event\n\t *\n\t * @method module:utils/dom/emittermixin~ProxyEmitter#_createDomListener\n\t * @returns {Function} The DOM listener callback.\n\t */\n\t_createDomListener( event ) {\n\t\tconst domListener = domEvt => {\n\t\t\tthis.fire( event, domEvt );\n\t\t};\n\n\t\t// Supply the DOM listener callback with a function that will help\n\t\t// detach it from the DOM Node, when it is no longer necessary.\n\t\t// See: {@link off}.\n\t\tdomListener.removeListener = () => {\n\t\t\tthis._domNode.removeEventListener( event, domListener );\n\t\t\tdelete this._domListeners[ event ];\n\t\t};\n\n\t\treturn domListener;\n\t}\n} );\n\n// Gets an unique DOM Node identifier. The identifier will be set if not defined.\n//\n// @private\n// @param {Node} node\n// @return {String} UID for given DOM Node.\nfunction getNodeUID( node ) {\n\treturn node[ 'data-ck-expando' ] || ( node[ 'data-ck-expando' ] = uid() );\n}\n\n// Checks (naively) if given node is native DOM Node.\n//\n// @private\n// @param {Node} node\n// @return {Boolean} True when native DOM Node.\nfunction isDomNode( node ) {\n\treturn node && isNative( node.addEventListener );\n}\n\n/**\n * Interface representing classes which mix in {@link module:utils/dom/emittermixin~EmitterMixin}.\n *\n * @interface Emitter\n */\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/dom/emittermixin.js","import listCacheClear from './_listCacheClear';\nimport listCacheDelete from './_listCacheDelete';\nimport listCacheGet from './_listCacheGet';\nimport listCacheHas from './_listCacheHas';\nimport listCacheSet from './_listCacheSet';\n\n/**\n * Creates an list cache object.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\nfunction ListCache(entries) {\n  var index = -1,\n      length = entries ? entries.length : 0;\n\n  this.clear();\n  while (++index < length) {\n    var entry = entries[index];\n    this.set(entry[0], entry[1]);\n  }\n}\n\n// Add methods to `ListCache`.\nListCache.prototype.clear = listCacheClear;\nListCache.prototype['delete'] = listCacheDelete;\nListCache.prototype.get = listCacheGet;\nListCache.prototype.has = listCacheHas;\nListCache.prototype.set = listCacheSet;\n\nexport default ListCache;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_ListCache.js","import MapCache from './_MapCache';\nimport setCacheAdd from './_setCacheAdd';\nimport setCacheHas from './_setCacheHas';\n\n/**\n *\n * Creates an array cache object to store unique values.\n *\n * @private\n * @constructor\n * @param {Array} [values] The values to cache.\n */\nfunction SetCache(values) {\n  var index = -1,\n      length = values ? values.length : 0;\n\n  this.__data__ = new MapCache;\n  while (++index < length) {\n    this.add(values[index]);\n  }\n}\n\n// Add methods to `SetCache`.\nSetCache.prototype.add = SetCache.prototype.push = setCacheAdd;\nSetCache.prototype.has = setCacheHas;\n\nexport default SetCache;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_SetCache.js","/**\n * A specialized version of `_.filter` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to iterate over.\n * @param {Function} predicate The function invoked per iteration.\n * @returns {Array} Returns the new filtered array.\n */\nfunction arrayFilter(array, predicate) {\n  var index = -1,\n      length = array.length,\n      resIndex = 0,\n      result = [];\n\n  while (++index < length) {\n    var value = array[index];\n    if (predicate(value, index, array)) {\n      result[resIndex++] = value;\n    }\n  }\n  return result;\n}\n\nexport default arrayFilter;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_arrayFilter.js","/**\n * Appends the elements of `values` to `array`.\n *\n * @private\n * @param {Array} array The array to modify.\n * @param {Array} values The values to append.\n * @returns {Array} Returns `array`.\n */\nfunction arrayPush(array, values) {\n  var index = -1,\n      length = values.length,\n      offset = array.length;\n\n  while (++index < length) {\n    array[offset + index] = values[index];\n  }\n  return array;\n}\n\nexport default arrayPush;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_arrayPush.js","import eq from './eq';\n\n/**\n * Gets the index at which the `key` is found in `array` of key-value pairs.\n *\n * @private\n * @param {Array} array The array to search.\n * @param {*} key The key to search for.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\nfunction assocIndexOf(array, key) {\n  var length = array.length;\n  while (length--) {\n    if (eq(array[length][0], key)) {\n      return length;\n    }\n  }\n  return -1;\n}\n\nexport default assocIndexOf;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_assocIndexOf.js","import baseSortedIndexBy from './_baseSortedIndexBy';\nimport identity from './identity';\nimport isSymbol from './isSymbol';\n\n/** Used as references for the maximum length and index of an array. */\nvar MAX_ARRAY_LENGTH = 4294967295,\n    HALF_MAX_ARRAY_LENGTH = MAX_ARRAY_LENGTH >>> 1;\n\n/**\n * The base implementation of `_.sortedIndex` and `_.sortedLastIndex` which\n * performs a binary search of `array` to determine the index at which `value`\n * should be inserted into `array` in order to maintain its sort order.\n *\n * @private\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @param {boolean} [retHighest] Specify returning the highest qualified index.\n * @returns {number} Returns the index at which `value` should be inserted\n *  into `array`.\n */\nfunction baseSortedIndex(array, value, retHighest) {\n  var low = 0,\n      high = array ? array.length : low;\n\n  if (typeof value == 'number' && value === value && high <= HALF_MAX_ARRAY_LENGTH) {\n    while (low < high) {\n      var mid = (low + high) >>> 1,\n          computed = array[mid];\n\n      if (computed !== null && !isSymbol(computed) &&\n          (retHighest ? (computed <= value) : (computed < value))) {\n        low = mid + 1;\n      } else {\n        high = mid;\n      }\n    }\n    return high;\n  }\n  return baseSortedIndexBy(array, value, identity, retHighest);\n}\n\nexport default baseSortedIndex;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_baseSortedIndex.js","import baseSlice from './_baseSlice';\n\n/**\n * The base implementation of methods like `_.dropWhile` and `_.takeWhile`\n * without support for iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to query.\n * @param {Function} predicate The function invoked per iteration.\n * @param {boolean} [isDrop] Specify dropping elements instead of taking them.\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {Array} Returns the slice of `array`.\n */\nfunction baseWhile(array, predicate, isDrop, fromRight) {\n  var length = array.length,\n      index = fromRight ? length : -1;\n\n  while ((fromRight ? index-- : ++index < length) &&\n    predicate(array[index], index, array)) {}\n\n  return isDrop\n    ? baseSlice(array, (fromRight ? 0 : index), (fromRight ? index + 1 : length))\n    : baseSlice(array, (fromRight ? index + 1 : 0), (fromRight ? length : index));\n}\n\nexport default baseWhile;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_baseWhile.js","import isArray from './isArray';\nimport stringToPath from './_stringToPath';\n\n/**\n * Casts `value` to a path array if it's not one.\n *\n * @private\n * @param {*} value The value to inspect.\n * @returns {Array} Returns the cast property path array.\n */\nfunction castPath(value) {\n  return isArray(value) ? value : stringToPath(value);\n}\n\nexport default castPath;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_castPath.js","import isKeyable from './_isKeyable';\n\n/**\n * Gets the data for `map`.\n *\n * @private\n * @param {Object} map The map to query.\n * @param {string} key The reference key.\n * @returns {*} Returns the map data.\n */\nfunction getMapData(map, key) {\n  var data = map.__data__;\n  return isKeyable(key)\n    ? data[typeof key == 'string' ? 'string' : 'hash']\n    : data.map;\n}\n\nexport default getMapData;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_getMapData.js","/**\n * Checks if `value` is a host object in IE < 9.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a host object, else `false`.\n */\nfunction isHostObject(value) {\n  // Many host objects are `Object` objects that can coerce to strings\n  // despite having improperly defined `toString` methods.\n  var result = false;\n  if (value != null && typeof value.toString != 'function') {\n    try {\n      result = !!(value + '');\n    } catch (e) {}\n  }\n  return result;\n}\n\nexport default isHostObject;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_isHostObject.js","import eq from './eq';\nimport isArrayLike from './isArrayLike';\nimport isIndex from './_isIndex';\nimport isObject from './isObject';\n\n/**\n * Checks if the given arguments are from an iteratee call.\n *\n * @private\n * @param {*} value The potential iteratee value argument.\n * @param {*} index The potential iteratee index or key argument.\n * @param {*} object The potential iteratee object argument.\n * @returns {boolean} Returns `true` if the arguments are from an iteratee call,\n *  else `false`.\n */\nfunction isIterateeCall(value, index, object) {\n  if (!isObject(object)) {\n    return false;\n  }\n  var type = typeof index;\n  if (type == 'number'\n        ? (isArrayLike(object) && isIndex(index, object.length))\n        : (type == 'string' && index in object)\n      ) {\n    return eq(object[index], value);\n  }\n  return false;\n}\n\nexport default isIterateeCall;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_isIterateeCall.js","/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/**\n * Checks if `value` is likely a prototype object.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a prototype, else `false`.\n */\nfunction isPrototype(value) {\n  var Ctor = value && value.constructor,\n      proto = (typeof Ctor == 'function' && Ctor.prototype) || objectProto;\n\n  return value === proto;\n}\n\nexport default isPrototype;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_isPrototype.js","import getNative from './_getNative';\n\n/* Built-in method references that are verified to be native. */\nvar nativeCreate = getNative(Object, 'create');\n\nexport default nativeCreate;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_nativeCreate.js","/**\n * Converts `set` to an array of its values.\n *\n * @private\n * @param {Object} set The set to convert.\n * @returns {Array} Returns the values.\n */\nfunction setToArray(set) {\n  var index = -1,\n      result = Array(set.size);\n\n  set.forEach(function(value) {\n    result[++index] = value;\n  });\n  return result;\n}\n\nexport default setToArray;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_setToArray.js","import baseClone from './_baseClone';\n\n/**\n * Creates a shallow clone of `value`.\n *\n * **Note:** This method is loosely based on the\n * [structured clone algorithm](https://mdn.io/Structured_clone_algorithm)\n * and supports cloning arrays, array buffers, booleans, date objects, maps,\n * numbers, `Object` objects, regexes, sets, strings, symbols, and typed\n * arrays. The own enumerable properties of `arguments` objects are cloned\n * as plain objects. An empty object is returned for uncloneable values such\n * as error objects, functions, DOM nodes, and WeakMaps.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to clone.\n * @returns {*} Returns the cloned value.\n * @see _.cloneDeep\n * @example\n *\n * var objects = [{ 'a': 1 }, { 'b': 2 }];\n *\n * var shallow = _.clone(objects);\n * console.log(shallow[0] === objects[0]);\n * // => true\n */\nfunction clone(value) {\n  return baseClone(value, false, true);\n}\n\nexport default clone;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/clone.js","import getLength from './_getLength';\nimport isFunction from './isFunction';\nimport isLength from './isLength';\n\n/**\n * Checks if `value` is array-like. A value is considered array-like if it's\n * not a function and has a `value.length` that's an integer greater than or\n * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is array-like, else `false`.\n * @example\n *\n * _.isArrayLike([1, 2, 3]);\n * // => true\n *\n * _.isArrayLike(document.body.children);\n * // => true\n *\n * _.isArrayLike('abc');\n * // => true\n *\n * _.isArrayLike(_.noop);\n * // => false\n */\nfunction isArrayLike(value) {\n  return value != null && isLength(getLength(value)) && !isFunction(value);\n}\n\nexport default isArrayLike;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/isArrayLike.js","/** Used as references for various `Number` constants. */\nvar MAX_SAFE_INTEGER = 9007199254740991;\n\n/**\n * Checks if `value` is a valid array-like length.\n *\n * **Note:** This function is loosely based on\n * [`ToLength`](http://ecma-international.org/ecma-262/6.0/#sec-tolength).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a valid length,\n *  else `false`.\n * @example\n *\n * _.isLength(3);\n * // => true\n *\n * _.isLength(Number.MIN_VALUE);\n * // => false\n *\n * _.isLength(Infinity);\n * // => false\n *\n * _.isLength('3');\n * // => false\n */\nfunction isLength(value) {\n  return typeof value == 'number' &&\n    value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;\n}\n\nexport default isLength;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/isLength.js","import getPrototype from './_getPrototype';\nimport isHostObject from './_isHostObject';\nimport isObjectLike from './isObjectLike';\n\n/** `Object#toString` result references. */\nvar objectTag = '[object Object]';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to resolve the decompiled source of functions. */\nvar funcToString = Function.prototype.toString;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/** Used to infer the `Object` constructor. */\nvar objectCtorString = funcToString.call(Object);\n\n/**\n * Used to resolve the\n * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)\n * of values.\n */\nvar objectToString = objectProto.toString;\n\n/**\n * Checks if `value` is a plain object, that is, an object created by the\n * `Object` constructor or one with a `[[Prototype]]` of `null`.\n *\n * @static\n * @memberOf _\n * @since 0.8.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a plain object,\n *  else `false`.\n * @example\n *\n * function Foo() {\n *   this.a = 1;\n * }\n *\n * _.isPlainObject(new Foo);\n * // => false\n *\n * _.isPlainObject([1, 2, 3]);\n * // => false\n *\n * _.isPlainObject({ 'x': 0, 'y': 0 });\n * // => true\n *\n * _.isPlainObject(Object.create(null));\n * // => true\n */\nfunction isPlainObject(value) {\n  if (!isObjectLike(value) ||\n      objectToString.call(value) != objectTag || isHostObject(value)) {\n    return false;\n  }\n  var proto = getPrototype(value);\n  if (proto === null) {\n    return true;\n  }\n  var Ctor = hasOwnProperty.call(proto, 'constructor') && proto.constructor;\n  return (typeof Ctor == 'function' &&\n    Ctor instanceof Ctor && funcToString.call(Ctor) == objectCtorString);\n}\n\nexport default isPlainObject;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/isPlainObject.js","import arrayFilter from './_arrayFilter';\nimport arrayMap from './_arrayMap';\nimport baseProperty from './_baseProperty';\nimport baseTimes from './_baseTimes';\nimport isArrayLikeObject from './isArrayLikeObject';\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeMax = Math.max;\n\n/**\n * This method is like `_.zip` except that it accepts an array of grouped\n * elements and creates an array regrouping the elements to their pre-zip\n * configuration.\n *\n * @static\n * @memberOf _\n * @since 1.2.0\n * @category Array\n * @param {Array} array The array of grouped elements to process.\n * @returns {Array} Returns the new array of regrouped elements.\n * @example\n *\n * var zipped = _.zip(['fred', 'barney'], [30, 40], [true, false]);\n * // => [['fred', 30, true], ['barney', 40, false]]\n *\n * _.unzip(zipped);\n * // => [['fred', 'barney'], [30, 40], [true, false]]\n */\nfunction unzip(array) {\n  if (!(array && array.length)) {\n    return [];\n  }\n  var length = 0;\n  array = arrayFilter(array, function(group) {\n    if (isArrayLikeObject(group)) {\n      length = nativeMax(group.length, length);\n      return true;\n    }\n  });\n  return baseTimes(length, function(index) {\n    return arrayMap(array, baseProperty(index));\n  });\n}\n\nexport default unzip;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/unzip.js","module.exports = function(module) {\r\n\tif(!module.webpackPolyfill) {\r\n\t\tmodule.deprecate = function() {};\r\n\t\tmodule.paths = [];\r\n\t\t// module.parent = undefined by default\r\n\t\tif(!module.children) module.children = [];\r\n\t\tObject.defineProperty(module, \"loaded\", {\r\n\t\t\tenumerable: true,\r\n\t\t\tget: function() {\r\n\t\t\t\treturn module.l;\r\n\t\t\t}\r\n\t\t});\r\n\t\tObject.defineProperty(module, \"id\", {\r\n\t\t\tenumerable: true,\r\n\t\t\tget: function() {\r\n\t\t\t\treturn module.i;\r\n\t\t\t}\r\n\t\t});\r\n\t\tmodule.webpackPolyfill = 1;\r\n\t}\r\n\treturn module;\r\n};\r\n\n\n\n// WEBPACK FOOTER //\n// (webpack)/buildin/module.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module core/command/helpers/getschemavalidranges\n */\n\nimport TreeWalker from '@ckeditor/ckeditor5-engine/src/model/treewalker';\nimport Range from '@ckeditor/ckeditor5-engine/src/model/range';\nimport Position from '@ckeditor/ckeditor5-engine/src/model/position';\n\n/**\n * Walks through given array of ranges and removes parts of them that are not allowed by passed schema to have the\n * attribute set. This is done by breaking a range in two and omitting the not allowed part.\n *\n * @param {String} attribute Attribute key.\n * @param {Array.<module:engine/model/range~Range>} ranges Ranges to be validated.\n * @param {module:engine/model/schema~Schema} schema Document schema.\n * @returns {Array.<module:engine/model/range~Range>} Ranges without invalid parts.\n */\nexport default function getSchemaValidRanges( attribute, ranges, schema ) {\n\tconst validRanges = [];\n\n\tfor ( let range of ranges ) {\n\t\tconst walker = new TreeWalker( { boundaries: range, mergeCharacters: true } );\n\t\tlet step = walker.next();\n\n\t\tlet last = range.start;\n\t\tlet from = range.start;\n\t\tlet to = range.end;\n\n\t\twhile ( !step.done ) {\n\t\t\tconst name = step.value.item.name || '$text';\n\t\t\tconst itemPosition = Position.createBefore( step.value.item );\n\n\t\t\tif ( !schema.check( { name: name, inside: itemPosition, attributes: attribute } ) ) {\n\t\t\t\tif ( !from.isEqual( last ) ) {\n\t\t\t\t\tvalidRanges.push( new Range( from, last ) );\n\t\t\t\t}\n\n\t\t\t\tfrom = walker.position;\n\t\t\t}\n\n\t\t\tlast = walker.position;\n\t\t\tstep = walker.next();\n\t\t}\n\n\t\tif ( from && !from.isEqual( to ) ) {\n\t\t\tvalidRanges.push( new Range( from, to ) );\n\t\t}\n\t}\n\n\treturn validRanges;\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-core/src/command/helpers/getschemavalidranges.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\nimport ModelRange from '../model/range';\n\nimport ViewElement from '../view/element';\nimport ViewText from '../view/text';\nimport viewWriter from '../view/writer';\n\n/**\n * Contains {@link module:engine/model/model model} to {@link module:engine/view/view view} converters for\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher}.\n *\n * @module engine/conversion/model-to-view-converters\n */\n\n/**\n * Function factory, creates a converter that converts node insertion changes from the model to the view.\n * The view element that will be added to the view depends on passed parameter. If {@link module:engine/view/element~Element} was passed,\n * it will be cloned and the copy will be inserted. If `Function` is provided, it is passed all the parameters of the\n * dispatcher's {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:insert insert event}.\n * It's expected that the function returns a {@link module:engine/view/element~Element}.\n * The result of the function will be inserted to the view.\n *\n * The converter automatically consumes corresponding value from consumables list, stops the event (see\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher}) and bind model and view elements.\n *\n *\t\tmodelDispatcher.on( 'insert:paragraph', insertElement( new ViewElement( 'p' ) ) );\n *\n *\t\tmodelDispatcher.on(\n *\t\t\t'insert:myElem',\n *\t\t\tinsertElement( ( data, consumable, conversionApi ) => {\n *\t\t\t\tlet myElem = new ViewElement( 'myElem', { myAttr: true }, new ViewText( 'myText' ) );\n *\n *\t\t\t\t// Do something fancy with myElem using data/consumable/conversionApi ...\n *\n *\t\t\t\treturn myElem;\n *\t\t\t}\n *\t\t) );\n *\n * @param {module:engine/view/element~Element|Function} elementCreator View element, or function returning a view element, which\n * will be inserted.\n * @returns {Function} Insert element event converter.\n */\nexport function insertElement( elementCreator ) {\n\treturn ( evt, data, consumable, conversionApi ) => {\n\t\tconst viewElement = ( elementCreator instanceof ViewElement ) ?\n\t\t\telementCreator.clone( true ) :\n\t\t\telementCreator( data, consumable, conversionApi );\n\n\t\tif ( !viewElement ) {\n\t\t\treturn;\n\t\t}\n\n\t\tif ( !consumable.consume( data.item, 'insert' ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst viewPosition = conversionApi.mapper.toViewPosition( data.range.start );\n\n\t\tconversionApi.mapper.bindElements( data.item, viewElement );\n\t\tviewWriter.insert( viewPosition, viewElement );\n\t};\n}\n\n/**\n * Function factory, creates a default model-to-view converter for text insertion changes.\n *\n * The converter automatically consumes corresponding value from consumables list and stops the event (see\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher}).\n *\n *\t\tmodelDispatcher.on( 'insert:$text', insertText() );\n *\n * @returns {Function} Insert text event converter.\n */\nexport function insertText() {\n\treturn ( evt, data, consumable, conversionApi ) => {\n\t\tif ( !consumable.consume( data.item, 'insert' ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst viewPosition = conversionApi.mapper.toViewPosition( data.range.start );\n\t\tconst viewText = new ViewText( data.item.data );\n\n\t\tviewWriter.insert( viewPosition, viewText );\n\t};\n}\n\n/**\n * Function factory, creates a converter that converts marker adding change to the view ui element.\n * The view ui element that will be added to the view depends on passed parameter. See {@link ~insertElement}.\n *\n * **Note:** unlike {@link ~insertElement}, the converter does not bind view element to model, because this converter\n * uses marker as \"model source of data\". This means that view ui element does not have corresponding model element.\n *\n * @param {module:engine/view/uielement~UIElement|Function} elementCreator View ui element, or function returning a view element, which\n * will be inserted.\n * @returns {Function} Insert element event converter.\n */\nexport function insertUIElement( elementCreator ) {\n\treturn ( evt, data, consumable, conversionApi ) => {\n\t\tconst viewElement = ( elementCreator instanceof ViewElement ) ?\n\t\t\telementCreator.clone( true ) :\n\t\t\telementCreator( data, consumable, conversionApi );\n\n\t\tif ( !viewElement ) {\n\t\t\treturn;\n\t\t}\n\n\t\tif ( !consumable.consume( data.range, 'addMarker' ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst viewPosition = conversionApi.mapper.toViewPosition( data.range.start );\n\n\t\tviewWriter.insert( viewPosition, viewElement );\n\t};\n}\n\n/**\n * Function factory, creates a converter that converts set/change attribute changes from the model to the view. Attributes\n * from model are converted to the view element attributes in the view. You may provide a custom function to generate a\n * key-value attribute pair to add/change. If not provided, model attributes will be converted to view elements attributes\n * on 1-to-1 basis.\n *\n * **Note:** Provided attribute creator should always return the same `key` for given attribute from the model.\n *\n * The converter automatically consumes corresponding value from consumables list and stops the event (see\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher}).\n *\n *\t\tmodelDispatcher.on( 'addAttribute:customAttr:myElem', setAttribute( ( data ) => {\n *\t\t\t// Change attribute key from `customAttr` to `class` in view.\n *\t\t\tconst key = 'class';\n *\t\t\tlet value = data.attributeNewValue;\n *\n *\t\t\t// Force attribute value to 'empty' if the model element is empty.\n *\t\t\tif ( data.item.childCount === 0 ) {\n *\t\t\t\tvalue = 'empty';\n *\t\t\t}\n *\n *\t\t\t// Return key-value pair.\n *\t\t\treturn { key, value };\n *\t\t} ) );\n *\n * @param {Function} [attributeCreator] Function returning an object with two properties: `key` and `value`, which\n * represents attribute key and attribute value to be set on a {@link module:engine/view/element~Element view element}.\n * The function is passed all the parameters of the\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:addAttribute}\n * or {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:changeAttribute} event.\n * @returns {Function} Set/change attribute converter.\n */\nexport function setAttribute( attributeCreator ) {\n\tattributeCreator = attributeCreator || ( ( value, key ) => ( { value, key } ) );\n\n\treturn ( evt, data, consumable, conversionApi ) => {\n\t\tif ( !consumable.consume( data.item, eventNameToConsumableType( evt.name ) ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst { key, value } = attributeCreator( data.attributeNewValue, data.attributeKey, data, consumable, conversionApi );\n\n\t\tconversionApi.mapper.toViewElement( data.item ).setAttribute( key, value );\n\t};\n}\n\n/**\n * Function factory, creates a converter that converts remove attribute changes from the model to the view. Removes attributes\n * that were converted to the view element attributes in the view. You may provide a custom function to generate a\n * key-value attribute pair to remove. If not provided, model attributes will be removed from view elements on 1-to-1 basis.\n *\n * **Note:** Provided attribute creator should always return the same `key` for given attribute from the model.\n *\n * **Note:** You can use the same attribute creator as in {@link module:engine/conversion/model-to-view-converters~setAttribute}.\n *\n * The converter automatically consumes corresponding value from consumables list and stops the event (see\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher}).\n *\n *\t\tmodelDispatcher.on( 'removeAttribute:customAttr:myElem', removeAttribute( ( data ) => {\n *\t\t\t// Change attribute key from `customAttr` to `class` in view.\n *\t\t\tconst key = 'class';\n *\t\t\tlet value = data.attributeNewValue;\n *\n *\t\t\t// Force attribute value to 'empty' if the model element is empty.\n *\t\t\tif ( data.item.childCount === 0 ) {\n *\t\t\t\tvalue = 'empty';\n *\t\t\t}\n *\n *\t\t\t// Return key-value pair.\n *\t\t\treturn { key, value };\n *\t\t} ) );\n *\n * @param {Function} [attributeCreator] Function returning an object with two properties: `key` and `value`, which\n * represents attribute key and attribute value to be removed from {@link module:engine/view/element~Element view element}.\n * The function is passed all the parameters of the\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:addAttribute addAttribute event}\n * or {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:changeAttribute changeAttribute event}.\n * @returns {Function} Remove attribute converter.\n */\nexport function removeAttribute( attributeCreator ) {\n\tattributeCreator = attributeCreator || ( ( value, key ) => ( { key } ) );\n\n\treturn ( evt, data, consumable, conversionApi ) => {\n\t\tif ( !consumable.consume( data.item, eventNameToConsumableType( evt.name ) ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst { key } = attributeCreator( data.attributeOldValue, data.attributeKey, data, consumable, conversionApi );\n\n\t\tconversionApi.mapper.toViewElement( data.item ).removeAttribute( key );\n\t};\n}\n\n/**\n * Function factory, creates a converter that converts set/change attribute changes from the model to the view. In this case,\n * model attributes are converted to a view element that will be wrapping view nodes which corresponding model nodes had\n * the attribute set. This is useful for attributes like `bold`, which may be set on text nodes in model but are\n * represented as an element in the view:\n *\n *\t\t[paragraph]              MODEL ====> VIEW        <p>\n *\t\t\t|- a {bold: true}                             |- <b>\n *\t\t\t|- b {bold: true}                             |   |- ab\n *\t\t\t|- c                                          |- c\n *\n * The wrapping node depends on passed parameter. If {@link module:engine/view/element~Element} was passed, it will be cloned and\n * the copy will become the wrapping element. If `Function` is provided, it is passed attribute value and then all the parameters of the\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:addAttribute addAttribute event}.\n * It's expected that the function returns a {@link module:engine/view/element~Element}.\n * The result of the function will be the wrapping element.\n * When provided `Function` does not return element, then will be no conversion.\n *\n * The converter automatically consumes corresponding value from consumables list, stops the event (see\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher}).\n *\n *\t\tmodelDispatcher.on( 'addAttribute:bold', wrapItem( new ViewAttributeElement( 'strong' ) ) );\n *\n * @param {module:engine/view/element~Element|Function} elementCreator View element, or function returning a view element, which will\n * be used for wrapping.\n * @returns {Function} Set/change attribute converter.\n */\nexport function wrapItem( elementCreator ) {\n\treturn ( evt, data, consumable, conversionApi ) => {\n\t\tconst viewElement = ( elementCreator instanceof ViewElement ) ?\n\t\t\telementCreator.clone( true ) :\n\t\t\telementCreator( data.attributeNewValue, data, consumable, conversionApi );\n\n\t\tif ( !viewElement ) {\n\t\t\treturn;\n\t\t}\n\n\t\tif ( !consumable.consume( data.item, eventNameToConsumableType( evt.name ) ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\tlet viewRange = conversionApi.mapper.toViewRange( data.range );\n\n\t\t// If this is a change event (because old value is not empty) and the creator is a function (so\n\t\t// it may create different view elements basing on attribute value) we have to create\n\t\t// view element basing on old value and unwrap it before wrapping with a newly created view element.\n\t\tif ( data.attributeOldValue !== null && !( elementCreator instanceof ViewElement ) ) {\n\t\t\tconst oldViewElement = elementCreator( data.attributeOldValue, data, consumable, conversionApi );\n\t\t\tviewRange = viewWriter.unwrap( viewRange, oldViewElement );\n\t\t}\n\n\t\tviewWriter.wrap( viewRange, viewElement );\n\t};\n}\n\n/**\n * Function factory, creates a converter that converts remove attribute changes from the model to the view. It assumes, that\n * attributes from model were converted to elements in the view. This converter will unwrap view nodes from corresponding\n * view element if given attribute was removed.\n *\n * The view element type that will be unwrapped depends on passed parameter.\n * If {@link module:engine/view/element~Element} was passed, it will be used to look for similar element in the view for unwrapping.\n * If `Function` is provided, it is passed all the parameters of the\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:addAttribute addAttribute event}.\n * It's expected that the function returns a {@link module:engine/view/element~Element}.\n * The result of the function will be used to look for similar element in the view for unwrapping.\n *\n * The converter automatically consumes corresponding value from consumables list, stops the event (see\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher}) and bind model and view elements.\n *\n *\t\tmodelDispatcher.on( 'removeAttribute:bold', unwrapItem( new ViewAttributeElement( 'strong' ) ) );\n *\n * @see module:engine/conversion/model-to-view-converters~wrapItem\n * @param {module:engine/view/element~Element|Function} elementCreator View element, or function returning a view element, which will\n * be used for unwrapping.\n * @returns {Function} Remove attribute converter.\n */\nexport function unwrapItem( elementCreator ) {\n\treturn ( evt, data, consumable, conversionApi ) => {\n\t\tconst viewElement = ( elementCreator instanceof ViewElement ) ?\n\t\t\telementCreator.clone( true ) :\n\t\t\telementCreator( data.attributeOldValue, data, consumable, conversionApi );\n\n\t\tif ( !viewElement ) {\n\t\t\treturn;\n\t\t}\n\n\t\tif ( !consumable.consume( data.item, eventNameToConsumableType( evt.name ) ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst viewRange = conversionApi.mapper.toViewRange( data.range );\n\n\t\tviewWriter.unwrap( viewRange, viewElement );\n\t};\n}\n\n/**\n * Function factory, creates a converter that wraps model range.\n *\n * In contrary to {@link module:engine/conversion/model-to-view-converters~wrapItem}, this converter's input is a\n * {@link module:engine/model/range~Range model range} (not changed model item). The model range is mapped\n * to {@link module:engine/view/range~Range view range} and then, view items within that view range are wrapped in a\n * {@link module:engine/view/attributeelement~AttributeElement view attribute element}. Note, that `elementCreator`\n * function of this converter takes different parameters that `elementCreator` of `wrapItem`.\n *\n * Let's assume following model and view. `{}` represents a range that is added as a marker with `searchResult` name.\n * The range represents a result of search `ab` string in the model document. The range has to be visualized in view.\n *\n *\t\t[paragraph]              MODEL ====> VIEW        <p>\n *\t\t\t|- {a                                         |- <span class=\"searchResult\">\n *\t\t\t|-  b}                                        |   |- ab\n *\t\t\t|-  c                                         |- c\n *\n * The wrapping node depends on passed parameter. If {@link module:engine/view/attributeelement~AttributeElement} was passed, it\n * will be cloned and the copy will become the wrapping element. If `Function` is provided, it is passed all the parameters of the\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:addMarker addMarker event}. It's expected\n * that the function returns a {@link module:engine/view/attributeelement~AttributeElement}. The result of the function will be the\n * wrapping element. When provided `Function` does not return element, then will be no conversion.\n *\n * The converter automatically consumes corresponding value from consumables list, stops the event (see\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher}).\n *\n *\t\tmodelDispatcher.on( 'addMarker:searchResult', wrapRange( new ViewAttributeElement( 'span', { class: 'searchResult' } ) ) );\n *\n * @param {module:engine/view/attributeelement~AttributeElement|Function} elementCreator View attribute element, or function returning\n * a view attribute element, which will be used for wrapping.\n * @returns {Function} Wrap range converter.\n */\nexport function wrapRange( elementCreator ) {\n\treturn ( evt, data, consumable, conversionApi ) => {\n\t\tconst viewElement = ( elementCreator instanceof ViewElement ) ?\n\t\t\telementCreator.clone( true ) :\n\t\t\telementCreator( data, consumable, conversionApi );\n\n\t\tif ( !viewElement ) {\n\t\t\treturn;\n\t\t}\n\n\t\tif ( !consumable.consume( data.range, 'addMarker' ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst viewRange = conversionApi.mapper.toViewRange( data.range );\n\t\tconst flatViewRanges = viewWriter.breakViewRangePerContainer( viewRange );\n\n\t\tfor ( let range of flatViewRanges ) {\n\t\t\tviewWriter.wrap( range, viewElement );\n\t\t}\n\t};\n}\n\n/**\n * Function factory, creates a converter that converts removing of a model marker to view attribute element.\n * This converter will unwrap view nodes from corresponding view range.\n *\n * The view element that will be unwrapped depends on passed parameter. If {@link module:engine/view/attributeelement~AttributeElement}\n * was passed, it will be used to look for similar element in the view for unwrapping. If `Function` is provided, it is passed all\n * the parameters of the\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:removeMarker removeMarker event}.\n * It's expected that the function returns a {@link module:engine/view/attributeelement~AttributeElement}. The result of\n * the function will be used to look for similar element in the view for unwrapping.\n *\n * The converter automatically consumes corresponding value from consumables list, stops the event (see\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher}) and bind model and view elements.\n *\n *\t\tmodelDispatcher.on( 'removeMarker:searchResult', unwrapRange( new ViewAttributeElement( 'span', { class: 'searchResult' } ) ) );\n *\n * @see module:engine/conversion/model-to-view-converters~wrapRange\n * @param {module:engine/view/attributeelement~AttributeElement|Function} elementCreator View attribute element, or function returning\n * a view attribute element, which will be used for unwrapping.\n * @returns {Function} Unwrap range converter.\n */\nexport function unwrapRange( elementCreator ) {\n\treturn ( evt, data, consumable, conversionApi ) => {\n\t\tconst viewElement = ( elementCreator instanceof ViewElement ) ?\n\t\t\telementCreator.clone( true ) :\n\t\t\telementCreator( data, consumable, conversionApi );\n\n\t\tif ( !viewElement ) {\n\t\t\treturn;\n\t\t}\n\n\t\tif ( !consumable.consume( data.range, 'removeMarker' ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst viewRange = conversionApi.mapper.toViewRange( data.range );\n\t\tconst flatViewRanges = viewWriter.breakViewRangePerContainer( viewRange );\n\n\t\tfor ( let range of flatViewRanges ) {\n\t\t\tviewWriter.unwrap( range, viewElement );\n\t\t}\n\t};\n}\n\n/**\n * Function factory, creates a default model-to-view converter for node remove changes.\n *\n *\t\tmodelDispatcher.on( 'remove', remove() );\n *\n * @returns {Function} Remove event converter.\n */\nexport function remove() {\n\treturn ( evt, data, consumable, conversionApi ) => {\n\t\tif ( !consumable.consume( data.item, 'remove' ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst modelRange = ModelRange.createFromPositionAndShift( data.sourcePosition, data.item.offsetSize );\n\t\tconst viewRange = conversionApi.mapper.toViewRange( modelRange );\n\n\t\tviewWriter.remove( viewRange.getTrimmed() );\n\t\tconversionApi.mapper.unbindModelElement( data.item );\n\t};\n}\n\n/**\n * Function factory, creates a default model-to-view converter for removing {@link module:engine/view/uielement~UIElement ui element}\n * basing on marker remove change.\n *\n * @param {module:engine/view/uielement~UIElement|Function} elementCreator View ui element, or function returning\n * a view ui element, which will be used as a pattern when look for element to remove at the marker start position.\n * @returns {Function} Remove ui element converter.\n */\nexport function removeUIElement( elementCreator ) {\n\treturn ( evt, data, consumable, conversionApi ) => {\n\t\tconst viewElement = ( elementCreator instanceof ViewElement ) ?\n\t\t\telementCreator.clone( true ) :\n\t\t\telementCreator( data, consumable, conversionApi );\n\n\t\tif ( !viewElement ) {\n\t\t\treturn;\n\t\t}\n\n\t\tif ( !consumable.consume( data.range, 'removeMarker' ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst viewRange = conversionApi.mapper.toViewRange( data.range );\n\n\t\tviewWriter.clear( viewRange.getEnlarged(), viewElement );\n\t};\n}\n\n/**\n * Returns the consumable type that is to be consumed in an event, basing on that event name.\n *\n * @param {String} evtName Event name.\n * @returns {String} Consumable type.\n */\nexport function eventNameToConsumableType( evtName ) {\n\tconst parts = evtName.split( ':' );\n\n\treturn parts[ 0 ] + ':' + parts[ 1 ];\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/conversion/model-to-view-converters.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/delta/insertdelta\n */\n\nimport Delta from './delta';\nimport DeltaFactory from './deltafactory';\nimport RemoveDelta from './removedelta';\nimport { register } from '../batch';\nimport InsertOperation from '../operation/insertoperation';\n\n/**\n * @classdesc\n * To provide specific OT behavior and better collisions solving, the {@link module:engine/model/batch~Batch#insert Batch#insert} method\n * uses the `InsertDelta` class which inherits from the `Delta` class and may overwrite some methods.\n */\nexport default class InsertDelta extends Delta {\n\t/**\n\t * @inheritDoc\n\t */\n\tget type() {\n\t\treturn 'insert';\n\t}\n\n\t/**\n\t * Position where the delta inserts nodes or `null` if there are no operations in the delta.\n\t *\n\t * @readonly\n\t * @type {module:engine/model/position~Position|null}\n\t */\n\tget position() {\n\t\treturn this._insertOperation ? this._insertOperation.position : null;\n\t}\n\n\t/**\n\t * Node list containing all the nodes inserted by the delta or `null` if there are no operations in the delta.\n\t *\n\t * @readonly\n\t * @type {module:engine/model/nodelist~NodeList|null}\n\t */\n\tget nodes() {\n\t\treturn this._insertOperation ? this._insertOperation.nodes : null;\n\t}\n\n\t/**\n\t * Insert operation that is saved in this delta or `null` if there are no operations in the delta.\n\t *\n\t * @readonly\n\t * @protected\n\t * @type {module:engine/model/operation/insertoperation~InsertOperation|null}\n\t */\n\tget _insertOperation() {\n\t\treturn this.operations[ 0 ] || null;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tget _reverseDeltaClass() {\n\t\treturn RemoveDelta;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.delta.InsertDelta';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get _priority() {\n\t\treturn 20;\n\t}\n}\n\n/**\n * Inserts a node or nodes at the given position.\n *\n * @chainable\n * @method module:engine/model/batch~Batch#insert\n * @param {module:engine/model/position~Position} position Position of insertion.\n * @param {module:engine/model/node~NodeSet} nodes The list of nodes to be inserted.\n */\nregister( 'insert', function( position, nodes ) {\n\tconst delta = new InsertDelta();\n\tconst insert = new InsertOperation( position, nodes, this.document.version );\n\n\tthis.addDelta( delta );\n\tdelta.addOperation( insert );\n\tthis.document.applyOperation( insert );\n\n\treturn this;\n} );\n\nDeltaFactory.register( InsertDelta );\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/delta/insertdelta.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/delta/mergedelta\n */\n\nimport Delta from './delta';\nimport DeltaFactory from './deltafactory';\nimport SplitDelta from './splitdelta';\nimport { register } from '../batch';\nimport Position from '../position';\nimport Element from '../element';\nimport RemoveOperation from '../operation/removeoperation';\nimport MoveOperation from '../operation/moveoperation';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/**\n * @classdesc\n * To provide specific OT behavior and better collisions solving, {@link module:engine/model/batch~Batch#merge} method\n * uses the `MergeDelta` class which inherits from the `Delta` class and may overwrite some methods.\n */\nexport default class MergeDelta extends Delta {\n\t/**\n\t * @inheritDoc\n\t */\n\tget type() {\n\t\treturn 'merge';\n\t}\n\n\t/**\n\t * Position between to merged nodes or `null` if the delta has no operations.\n\t *\n\t * @readonly\n\t * @type {module:engine/model/position~Position|null}\n\t */\n\tget position() {\n\t\treturn this._removeOperation ? this._removeOperation.sourcePosition : null;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tgetReversed() {\n\t\tlet delta = super.getReversed();\n\n\t\tif ( delta.operations.length > 0 ) {\n\t\t\tdelta.operations[ 1 ].isSticky = false;\n\t\t}\n\n\t\treturn delta;\n\t}\n\n\t/**\n\t * Operation in this delta that removes the node after merge position (which will be empty at that point) or\n\t * `null` if the delta has no operations. Note, that after {@link module:engine/model/delta/transform~transform transformation}\n\t * this might be an instance of {@link module:engine/model/operation/moveoperation~MoveOperation} instead of\n\t * {@link module:engine/model/operation/removeoperation~RemoveOperation}.\n\t *\n\t * @readonly\n\t * @protected\n\t * @type {module:engine/model/operation/moveoperation~MoveOperation|null}\n\t */\n\tget _removeOperation() {\n\t\treturn this.operations[ 1 ] || null;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tget _reverseDeltaClass() {\n\t\treturn SplitDelta;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.delta.MergeDelta';\n\t}\n}\n\n/**\n * Merges two siblings at the given position.\n *\n * Node before and after the position have to be an element. Otherwise `batch-merge-no-element-before` or\n * `batch-merge-no-element-after` error will be thrown.\n *\n * @chainable\n * @method module:engine/model/batch~Batch#merge\n * @param {module:engine/model/position~Position} position Position of merge.\n */\nregister( 'merge', function( position ) {\n\tconst delta = new MergeDelta();\n\tthis.addDelta( delta );\n\n\tconst nodeBefore = position.nodeBefore;\n\tconst nodeAfter = position.nodeAfter;\n\n\tif ( !( nodeBefore instanceof Element ) ) {\n\t\t/**\n\t\t * Node before merge position must be an element.\n\t\t *\n\t\t * @error batch-merge-no-element-before\n\t\t */\n\t\tthrow new CKEditorError( 'batch-merge-no-element-before: Node before merge position must be an element.' );\n\t}\n\n\tif ( !( nodeAfter instanceof Element ) ) {\n\t\t/**\n\t\t * Node after merge position must be an element.\n\t\t *\n\t\t * @error batch-merge-no-element-after\n\t\t */\n\t\tthrow new CKEditorError( 'batch-merge-no-element-after: Node after merge position must be an element.' );\n\t}\n\n\tconst positionAfter = Position.createFromParentAndOffset( nodeAfter, 0 );\n\tconst positionBefore = Position.createFromParentAndOffset( nodeBefore, nodeBefore.maxOffset );\n\n\tconst move = new MoveOperation( positionAfter, nodeAfter.maxOffset, positionBefore, this.document.version );\n\tmove.isSticky = true;\n\tdelta.addOperation( move );\n\tthis.document.applyOperation( move );\n\n\tconst remove = new RemoveOperation( position, 1, this.document.version );\n\tdelta.addOperation( remove );\n\tthis.document.applyOperation( remove );\n\n\treturn this;\n} );\n\nDeltaFactory.register( MergeDelta );\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/delta/mergedelta.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/delta/movedelta\n */\n\nimport Delta from './delta';\nimport DeltaFactory from './deltafactory';\nimport { register } from '../batch';\nimport MoveOperation from '../operation/moveoperation';\nimport Position from '../position';\nimport Range from '../range';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/**\n * @classdesc\n * To provide specific OT behavior and better collisions solving, {@link module:engine/model/batch~Batch#move} method\n * uses the `MoveDelta` class which inherits from the `Delta` class and may overwrite some methods.\n */\nexport default class MoveDelta extends Delta {\n\t/**\n\t * @inheritDoc\n\t */\n\tget type() {\n\t\treturn 'move';\n\t}\n\n\t/**\n\t * Offset size of moved range or `null` if there are no operations in the delta.\n\t *\n\t * @type {Number|null}\n\t */\n\tget howMany() {\n\t\treturn this._moveOperation ? this._moveOperation.howMany : null;\n\t}\n\n\t/**\n\t * {@link module:engine/model/delta/movedelta~MoveDelta#_moveOperation Move operation}\n\t * {@link module:engine/model/operation/moveoperation~MoveOperation#sourcePosition source position} or `null` if there are\n\t * no operations in the delta.\n\t *\n\t * @type {module:engine/model/position~Position|null}\n\t */\n\tget sourcePosition() {\n\t\treturn this._moveOperation ? this._moveOperation.sourcePosition : null;\n\t}\n\n\t/**\n\t * {@link module:engine/model/delta/movedelta~MoveDelta#_moveOperation Move operation}\n\t * {@link module:engine/model/operation/moveoperation~MoveOperation#targetPosition target position} or `null` if there are\n\t * no operations in the delta.\n\t *\n\t * @type {module:engine/model/position~Position|null}\n\t */\n\tget targetPosition() {\n\t\treturn this._moveOperation ? this._moveOperation.targetPosition : null;\n\t}\n\n\t/**\n\t * {@link module:engine/model/delta/movedelta~MoveDelta#_moveOperation Move operation} that is saved in this delta or `null`\n\t * if there are no operations in the delta.\n\t *\n\t * @protected\n\t * @type {module:engine/model/operation/moveoperation~MoveOperation|null}\n\t */\n\tget _moveOperation() {\n\t\treturn this.operations[ 0 ] || null;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tget _reverseDeltaClass() {\n\t\treturn MoveDelta;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.delta.MoveDelta';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get _priority() {\n\t\treturn 20;\n\t}\n}\n\nfunction addMoveOperation( batch, delta, sourcePosition, howMany, targetPosition ) {\n\tconst operation = new MoveOperation( sourcePosition, howMany, targetPosition, batch.document.version );\n\tdelta.addOperation( operation );\n\tbatch.document.applyOperation( operation );\n}\n\n/**\n * Moves given {@link module:engine/model/item~Item model item} or given range to target position.\n *\n * @chainable\n * @method module:engine/model/batch~Batch#move\n * @param {module:engine/model/item~Item|module:engine/model/range~Range} itemOrRange Model item or range of nodes to move.\n * @param {module:engine/model/position~Position} targetPosition Position where moved nodes will be inserted.\n */\nregister( 'move', function( itemOrRange, targetPosition ) {\n\tconst delta = new MoveDelta();\n\tthis.addDelta( delta );\n\n\tif ( itemOrRange instanceof Range ) {\n\t\tif ( !itemOrRange.isFlat ) {\n\t\t\t/**\n\t\t\t * Range to move is not flat.\n\t\t\t *\n\t\t\t * @error batch-move-range-not-flat\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'batch-move-range-not-flat: Range to move is not flat.' );\n\t\t}\n\n\t\taddMoveOperation( this, delta, itemOrRange.start, itemOrRange.end.offset - itemOrRange.start.offset, targetPosition );\n\t} else {\n\t\taddMoveOperation( this, delta, Position.createBefore( itemOrRange ), 1, targetPosition );\n\t}\n\n\treturn this;\n} );\n\nDeltaFactory.register( MoveDelta );\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/delta/movedelta.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/delta/removedelta\n */\n\nimport MoveDelta from './movedelta';\nimport { register } from '../batch';\nimport DeltaFactory from './deltafactory';\nimport RemoveOperation from '../operation/removeoperation';\nimport Position from '../position';\nimport Range from '../range';\n\n/**\n * @classdesc\n * To provide specific OT behavior and better collisions solving, {@link module:engine/model/batch~Batch#remove} method\n * uses the `RemoveDelta` class which inherits from the `Delta` class and may overwrite some methods.\n */\nexport default class RemoveDelta extends MoveDelta {\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.delta.RemoveDelta';\n\t}\n}\n\nfunction addRemoveOperation( batch, delta, position, howMany ) {\n\tconst operation = new RemoveOperation( position, howMany, batch.document.version );\n\tdelta.addOperation( operation );\n\tbatch.document.applyOperation( operation );\n}\n\n/**\n * Removes given {@link module:engine/model/item~Item model item} or given range.\n *\n * @chainable\n * @method module:engine/model/batch~Batch#remove\n * @param {module:engine/model/item~Item|module:engine/model/range~Range} itemOrRange Model item or range to remove.\n */\nregister( 'remove', function( itemOrRange ) {\n\tconst delta = new RemoveDelta();\n\tthis.addDelta( delta );\n\n\tif ( itemOrRange instanceof Range ) {\n\t\t// The array is reversed, so the ranges are correct and do not have to be updated.\n\t\tlet ranges = itemOrRange.getMinimalFlatRanges().reverse();\n\n\t\tfor ( let flat of ranges ) {\n\t\t\taddRemoveOperation( this, delta, flat.start, flat.end.offset - flat.start.offset );\n\t\t}\n\t} else {\n\t\taddRemoveOperation( this, delta, Position.createBefore( itemOrRange ), 1 );\n\t}\n\n\treturn this;\n} );\n\nDeltaFactory.register( RemoveDelta );\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/delta/removedelta.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/delta/splitdelta\n */\n\nimport Delta from './delta';\nimport DeltaFactory from './deltafactory';\nimport { register } from '../batch';\nimport Position from '../position';\nimport Element from '../element';\nimport InsertOperation from '../operation/insertoperation';\nimport MoveOperation from '../operation/moveoperation';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\nimport MergeDelta from '../delta/mergedelta';\n\n/**\n * @classdesc\n * To provide specific OT behavior and better collisions solving, the {@link module:engine/model/batch~Batch#split} method\n * uses `SplitDelta` class which inherits from the `Delta` class and may overwrite some methods.\n */\nexport default class SplitDelta extends Delta {\n\t/**\n\t * @inheritDoc\n\t */\n\tget type() {\n\t\treturn 'split';\n\t}\n\n\t/**\n\t * Position of split or `null` if there are no operations in the delta.\n\t *\n\t * @type {module:engine/model/position~Position|null}\n\t */\n\tget position() {\n\t\treturn this._moveOperation ? this._moveOperation.sourcePosition : null;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tgetReversed() {\n\t\tlet delta = super.getReversed();\n\n\t\tif ( delta.operations.length > 0 ) {\n\t\t\tdelta.operations[ 0 ].isSticky = true;\n\t\t}\n\n\t\treturn delta;\n\t}\n\n\t/**\n\t * Operation in the delta that adds to model an element into which split nodes will be moved, or `null` if\n\t * there are no operations in the delta.\n\t *\n\t * Most commonly this will be {@link module:engine/model/operation/insertoperation~InsertOperation an insert operation},\n\t * as `SplitDelta` has to create a new node. If `SplitDelta` was created through\n\t * {@link module:engine/model/delta/delta~Delta#getReversed reversing}\n\t * a {@link module:engine/model/delta/mergedelta~MergeDelta merge delta},\n\t * this will be a {@link module:engine/model/operation/reinsertoperation~ReinsertOperation reinsert operation},\n\t * as we will want to re-insert the exact element that was removed by that merge delta.\n\t *\n\t * @protected\n\t * @type {module:engine/model/operation/insertoperation~InsertOperation|\n\t * module:engine/model/operation/reinsertoperation~ReinsertOperation|null}\n\t */\n\tget _cloneOperation() {\n\t\treturn this.operations[ 0 ] || null;\n\t}\n\n\t/**\n\t * Operation in the delta that moves model items, that are after split position, to their new parent or `null`\n\t * if there are no operations in the delta.\n\t *\n\t * @protected\n\t * @type {module:engine/model/operation/moveoperation~MoveOperation|null}\n\t */\n\tget _moveOperation() {\n\t\treturn this.operations[ 1 ] || null;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tget _reverseDeltaClass() {\n\t\treturn MergeDelta;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.delta.SplitDelta';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get _priority() {\n\t\treturn 5;\n\t}\n}\n\n/**\n * Splits an element at the given position.\n *\n * The element cannot be a root element, as root element cannot be split. The `batch-split-root` error will be thrown if\n * you try to split the root element.\n *\n * @chainable\n * @method module:engine/model/batch~Batch#split\n * @param {module:engine/model/position~Position} position Position of split.\n */\nregister( 'split', function( position ) {\n\tconst delta = new SplitDelta();\n\tthis.addDelta( delta );\n\n\tconst splitElement = position.parent;\n\n\tif ( !splitElement.parent ) {\n\t\t/**\n\t\t * Root element can not be split.\n\t\t *\n\t\t * @error batch-split-root\n\t\t */\n\t\tthrow new CKEditorError( 'batch-split-root: Root element can not be split.' );\n\t}\n\n\tconst copy = new Element( splitElement.name, splitElement.getAttributes() );\n\n\tconst insert = new InsertOperation( Position.createAfter( splitElement ), copy, this.document.version );\n\n\tdelta.addOperation( insert );\n\tthis.document.applyOperation( insert );\n\n\tconst move = new MoveOperation(\n\t\tposition,\n\t\tsplitElement.maxOffset - position.offset,\n\t\tPosition.createFromParentAndOffset( copy, 0 ),\n\t\tthis.document.version\n\t);\n\tmove.isSticky = true;\n\n\tdelta.addOperation( move );\n\tthis.document.applyOperation( move );\n\n\treturn this;\n} );\n\nDeltaFactory.register( SplitDelta );\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/delta/splitdelta.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/delta/transform\n */\n\nimport Delta from './delta';\nimport operationTransform from '../operation/transform';\nimport NoOperation from '../operation/nooperation';\nimport arrayUtils from '@ckeditor/ckeditor5-utils/src/lib/lodash/array';\n\nconst specialCases = new Map();\n\n/**\n * Transforms given {@link module:engine/model/delta/delta~Delta delta} by another {@link module:engine/model/delta/delta~Delta delta} and\n * returns the result of that transformation as an array containing one or more {@link module:engine/model/delta/delta~Delta delta}\n * instances.\n *\n * Delta transformations heavily base on {@link module:engine/model/operation/transform~transform operational transformations}. Since\n * delta is a list of operations most situations can be handled thanks to operational transformation. Unfortunately,\n * deltas are more complicated than operations and have they semantic meaning, as they represent user's editing intentions.\n *\n * Sometimes, simple operational transformation on deltas' operations might result in some unexpected results. Those\n * results would be fine from OT point of view, but would not reflect user's intentions. Because of such conflicts\n * we need to handle transformations in special cases in a custom way.\n *\n * The function itself looks whether two given delta types have a special case function registered. If so, the deltas are\n * transformed using that function. If not, {@link module:engine/model/delta/transform~defaultTransform default transformation algorithm}\n * is used.\n *\n * @param {module:engine/model/delta/delta~Delta} a Delta that will be transformed.\n * @param {module:engine/model/delta/delta~Delta} b Delta to transform by.\n * @param {Boolean} isAMoreImportantThanB Flag indicating whether the delta which will be transformed (`a`) should be treated\n * as more important when resolving conflicts. Note that this flag is used only if provided deltas have same\n * {@link module:engine/model/delta/delta~Delta._priority priority}. If deltas have different priorities, their importance is resolved\n * automatically and overwrites this flag.\n * @returns {Array.<module:engine/model/delta/delta~Delta>} Result of the transformation.\n */\nexport default function transform( a, b, isAMoreImportantThanB ) {\n\tconst transformAlgorithm = getTransformationCase( a, b ) || defaultTransform;\n\n\tconst transformed = transformAlgorithm( a, b, isAMoreImportantThanB );\n\tconst baseVersion = arrayUtils.last( b.operations ).baseVersion;\n\n\treturn updateBaseVersion( baseVersion, transformed );\n}\n\n// Updates base versions of operations inside deltas (which are the results of delta transformation).\nfunction updateBaseVersion( baseVersion, deltas ) {\n\tfor ( let delta of deltas ) {\n\t\tfor ( let op of delta.operations ) {\n\t\t\top.baseVersion = ++baseVersion;\n\t\t}\n\t}\n\n\treturn deltas;\n}\n\n/**\n * The default delta transformation function. It is used for those deltas that are not in special case conflict.\n *\n * This algorithm is similar to a popular `dOPT` algorithm used in operational transformation, as we are in fact\n * transforming two sets of operations by each other.\n *\n * @param {module:engine/model/delta/delta~Delta} a Delta that will be transformed.\n * @param {module:engine/model/delta/delta~Delta} b Delta to transform by.\n * @param {Boolean} isAMoreImportantThanB Flag indicating whether the delta which will be transformed (`a`) should be treated\n * as more important when resolving conflicts. Note that this flag is used only if provided deltas have same\n * {@link module:engine/model/delta/delta~Delta._priority priority}. If deltas have different priorities, their importance is resolved\n * automatically and overwrites this flag.\n * @returns {Array.<module:engine/model/delta/delta~Delta>} Result of the transformation, that is an array with single delta instance.\n */\nexport function defaultTransform( a, b, isAMoreImportantThanB ) {\n\t// First, resolve the flag real value.\n\tisAMoreImportantThanB = getPriority( a.constructor, b.constructor, isAMoreImportantThanB );\n\n\t// Create a new delta instance. Make sure that the new delta is of same type as transformed delta.\n\t// We will transform operations in that delta but it doesn't mean the delta's \"meaning\" which is connected to\n\t// the delta's type. Since the delta's type is heavily used in transformations and probably other parts\n\t// of system it is important to keep proper delta type through all transformation process.\n\tconst transformed = new a.constructor();\n\n\t// Array containing operations that we will transform by. At the beginning these are just operations from\n\tlet byOps = b.operations;\n\n\t// This array is storing operations from `byOps` which got transformed by operation from delta `a`.\n\tlet newByOps = [];\n\n\t// We take each operation from original set of operations to transform.\n\tfor ( let opA of a.operations ) {\n\t\t// We wrap the operation in the array. This is important, because operation transformation algorithm returns\n\t\t// an array of operations so we need to make sure that our algorithm is ready to handle arrays.\n\t\tconst ops = [ opA ];\n\n\t\t// Now the real algorithm takes place.\n\t\tfor ( let opB of byOps ) {\n\t\t\t// For each operation that we need transform by...\n\t\t\tfor ( let i = 0; i < ops.length; i++ ) {\n\t\t\t\t// We take each operation to transform...\n\t\t\t\tconst op = ops[ i ];\n\n\t\t\t\t// And transform both of them by themselves.\n\n\t\t\t\t// The result of transforming operation from delta B by operation from delta A is saved in\n\t\t\t\t// `newByOps` array. We will use that array for transformations in next loops. We need delta B\n\t\t\t\t// operations after transformed by delta A operations to get correct results of transformations\n\t\t\t\t// of next operations from delta A.\n\t\t\t\t//\n\t\t\t\t// It's like this because 2nd operation from delta A assumes that 1st operation from delta A\n\t\t\t\t// is \"already applied\". When we transform 2nd operation from delta A by operations from delta B\n\t\t\t\t// we have to be sure that operations from delta B are in a state that acknowledges 1st operation\n\t\t\t\t// from delta A.\n\t\t\t\t//\n\t\t\t\t// This can be easier understood when operations sets to transform are represented by diamond diagrams:\n\t\t\t\t// http://www.codecommit.com/blog/java/understanding-and-applying-operational-transformation\n\n\t\t\t\t// Using push.apply because operationTransform function is returning an array with one or multiple results.\n\t\t\t\tArray.prototype.push.apply( newByOps, operationTransform( opB, op, !isAMoreImportantThanB ) );\n\n\t\t\t\t// Then, we transform operation from delta A by operation from delta B.\n\t\t\t\tconst results = operationTransform( op, opB, isAMoreImportantThanB );\n\n\t\t\t\t// We replace currently processed operation from `ops` array by the results of transformation.\n\t\t\t\t// Note, that we process single operation but the operationTransform result might be an array, so we\n\t\t\t\t// might splice-in more operations. We will process them further in next iterations. Right now we\n\t\t\t\t// just save them in `ops` array and move `i` pointer by proper offset.\n\t\t\t\tArray.prototype.splice.apply( ops, [ i, 1 ].concat( results ) );\n\n\t\t\t\ti += results.length - 1;\n\t\t\t}\n\n\t\t\t// At this point a single operation from delta A got transformed by a single operation from delta B.\n\t\t\t// The transformation result is in `ops` array and it may be one or more operations. This was just the first step.\n\t\t\t// Operation from delta A has to be further transformed by the other operations from delta B.\n\t\t\t// So in next iterator loop we will take another operation from delta B and use transformed delta A (`ops`)\n\t\t\t// to transform it further.\n\t\t}\n\n\t\t// We got through all delta B operations and have a final transformed state of an operation from delta A.\n\n\t\t// As previously mentioned, we substitute operations from delta B by their transformed equivalents.\n\t\tbyOps = newByOps;\n\t\tnewByOps = [];\n\n\t\t// We add transformed operation from delta A to newly created delta.\n\t\t// Remember that transformed operation from delta A may consist of multiple operations.\n\t\tfor ( let op of ops ) {\n\t\t\ttransformed.addOperation( op );\n\t\t}\n\n\t\t// In next loop, we will take another operation from delta A and transform it through (transformed) operations\n\t\t// from delta B...\n\t}\n\n\treturn [ transformed ];\n}\n\n/**\n * Adds a special case callback for given delta classes.\n *\n * @external module:engine/model/delta/transform~transform\n * @function module:engine/model/delta/transform~transform.addTransformationCase\n * @param {Function} A Delta constructor which instance will get transformed.\n * @param {Function} B Delta constructor which instance will be transformed by.\n * @param {Function} resolver A callback that will handle custom special case transformation for instances of given delta classes.\n */\nexport function addTransformationCase( A, B, resolver ) {\n\tlet casesA = specialCases.get( A );\n\n\tif ( !casesA ) {\n\t\tcasesA = new Map();\n\t\tspecialCases.set( A, casesA );\n\t}\n\n\tcasesA.set( B, resolver );\n}\n\n/**\n * Gets a special case callback which was previously {@link module:engine/model/delta/transform~transform.addTransformationCase added}.\n *\n * @param {module:engine/model/delta/delta~Delta} a Delta to transform.\n * @param {module:engine/model/delta/delta~Delta} b Delta to be transformed by.\n */\nexport function getTransformationCase( a, b ) {\n\tlet casesA = specialCases.get( a.constructor );\n\n\t// If there are no special cases registered for class which `a` is instance of, we will\n\t// check if there are special cases registered for any parent class.\n\tif ( !casesA || !casesA.get( b.constructor ) ) {\n\t\tconst cases = specialCases.keys();\n\n\t\tfor ( let caseClass of cases ) {\n\t\t\tif ( a instanceof caseClass && specialCases.get( caseClass ).get( b.constructor ) ) {\n\t\t\t\tcasesA = specialCases.get( caseClass );\n\n\t\t\t\tbreak;\n\t\t\t}\n\t\t}\n\t}\n\n\tif ( casesA ) {\n\t\treturn casesA.get( b.constructor );\n\t}\n\n\treturn undefined;\n}\n\n// Checks priorities of passed constructors and decides which one is more important.\n// If both priorities are same, value passed in `isAMoreImportantThanB` parameter is used.\nfunction getPriority( A, B, isAMoreImportantThanB ) {\n\tif ( A._priority > B._priority ) {\n\t\treturn true;\n\t} else if ( A._priority < B._priority ) {\n\t\treturn false;\n\t} else {\n\t\treturn isAMoreImportantThanB;\n\t}\n}\n\n/**\n * Transforms two sets of deltas by themselves. Returns both transformed sets. Does not modify passed parameters.\n *\n * @param {Array.<module:engine/model/delta/delta~Delta>} deltasA Array with first set of deltas to transform.\n * @param {Array.<module:engine/model/delta/delta~Delta>} deltasB Array with second set of deltas to transform.\n * @param {Boolean} isAMoreImportantThanB Flag indicating whether the deltas from `deltasA` set should be treated as more\n * important when resolving conflicts.\n * @returns {Object}\n * @returns {Array.<module:engine/model/delta/delta~Delta>} return.deltasA The first set of deltas transformed by the second set of deltas.\n * @returns {Array.<module:engine/model/delta/delta~Delta>} return.deltasB The second set of deltas transformed by the first set of deltas.\n */\nexport function transformDeltaSets( deltasA, deltasB, isAMoreImportantThanB ) {\n\tlet transformedDeltasA = Array.from( deltasA );\n\tlet transformedDeltasB = Array.from( deltasB );\n\n\tfor ( let i = 0; i < transformedDeltasA.length; i++ ) {\n\t\tlet deltaA = [ transformedDeltasA[ i ] ];\n\n\t\tfor ( let j = 0; j < transformedDeltasB.length; j++ ) {\n\t\t\tlet deltaB = [ transformedDeltasB[ j ] ];\n\n\t\t\tfor ( let k = 0; k < deltaA.length; k++ ) {\n\t\t\t\tfor ( let l = 0; l < deltaB.length; l++ ) {\n\t\t\t\t\tlet resultAB = transform( deltaA[ k ], deltaB[ l ], isAMoreImportantThanB );\n\t\t\t\t\tlet resultBA = transform( deltaB[ l ], deltaA[ k ], !isAMoreImportantThanB );\n\n\t\t\t\t\tdeltaA.splice( k, 1, ...resultAB );\n\t\t\t\t\tk += resultAB.length - 1;\n\n\t\t\t\t\tdeltaB.splice( l, 1, ...resultBA );\n\t\t\t\t\tl += resultBA.length - 1;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\ttransformedDeltasB.splice( j, 1, ...deltaB );\n\t\t\tj += deltaB.length - 1;\n\t\t}\n\n\t\ttransformedDeltasA.splice( i, 1, ...deltaA );\n\t\ti += deltaA.length - 1;\n\t}\n\n\tconst opsDiffA = getOpsCount( transformedDeltasA ) - getOpsCount( deltasA );\n\tconst opsDiffB = getOpsCount( transformedDeltasB ) - getOpsCount( deltasB );\n\n\tif ( opsDiffB < opsDiffA ) {\n\t\tpadWithNoOps( transformedDeltasB, opsDiffA - opsDiffB );\n\t} else if ( opsDiffA < opsDiffB ) {\n\t\tpadWithNoOps( transformedDeltasA, opsDiffB - opsDiffA );\n\t}\n\n\treturn { deltasA: transformedDeltasA, deltasB: transformedDeltasB };\n}\n\n// Returns number of operations in given array of deltas.\nfunction getOpsCount( deltas ) {\n\treturn deltas.reduce( ( current, delta ) => {\n\t\treturn current + delta.operations.length;\n\t}, 0 );\n}\n\n// Adds a delta containing `howMany` `NoOperation` instances to given array with deltas.\n// Used to \"synchronize\" the number of operations in two delta sets.\nfunction padWithNoOps( deltas, howMany ) {\n\tconst lastDelta = deltas[ deltas.length - 1 ];\n\tlet baseVersion = lastDelta.operations.length + lastDelta.baseVersion;\n\n\tlet noDelta = new Delta();\n\n\tfor ( let i = 0; i < howMany; i++ ) {\n\t\tnoDelta.addOperation( new NoOperation( baseVersion++ ) );\n\t}\n\n\tdeltas.push( noDelta );\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/delta/transform.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/delta/unwrapdelta\n */\n\nimport Delta from './delta';\nimport DeltaFactory from './deltafactory';\nimport WrapDelta from './wrapdelta';\nimport { register } from '../batch';\nimport Position from '../position';\nimport RemoveOperation from '../operation/removeoperation';\nimport MoveOperation from '../operation/moveoperation';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/**\n * @classdesc\n * To provide specific OT behavior and better collisions solving, {@link module:engine/model/batch~Batch#merge} method\n * uses the `UnwrapDelta` class which inherits from the `Delta` class and may overwrite some methods.\n */\nexport default class UnwrapDelta extends Delta {\n\t/**\n\t * @inheritDoc\n\t */\n\tget type() {\n\t\treturn 'unwrap';\n\t}\n\n\t/**\n\t * Position before unwrapped element or `null` if there are no operations in the delta.\n\t *\n\t * @type {module:engine/model/position~Position|null}\n\t */\n\tget position() {\n\t\treturn this._moveOperation ? this._moveOperation.targetPosition : null;\n\t}\n\n\t/**\n\t * Operation in the delta that moves unwrapped nodes to their new parent or `null` if there are no operations in the delta.\n\t *\n\t * @protected\n\t * @type {module:engine/model/operation/moveoperation~MoveOperation|null}\n\t */\n\tget _moveOperation() {\n\t\treturn this.operations[ 0 ] || null;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tget _reverseDeltaClass() {\n\t\treturn WrapDelta;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.delta.UnwrapDelta';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get _priority() {\n\t\treturn 10;\n\t}\n}\n\n/**\n * Unwraps children of the given element – all its children are moved before it and then the element is removed.\n * Throws error if you try to unwrap an element which does not have a parent.\n *\n * @chainable\n * @method module:engine/model/batch~Batch#unwrap\n * @param {module:engine/model/element~Element} position Element to unwrap.\n */\nregister( 'unwrap', function( element ) {\n\tif ( element.parent === null ) {\n\t\t/**\n\t\t * Trying to unwrap an element which has no parent.\n\t\t *\n\t\t * @error batch-unwrap-element-no-parent\n\t\t */\n\t\tthrow new CKEditorError( 'batch-unwrap-element-no-parent: Trying to unwrap an element which has no parent.' );\n\t}\n\n\tconst delta = new UnwrapDelta();\n\tthis.addDelta( delta );\n\n\tlet sourcePosition = Position.createFromParentAndOffset( element, 0 );\n\n\tconst move = new MoveOperation( sourcePosition, element.maxOffset, Position.createBefore( element ), this.document.version );\n\tmove.isSticky = true;\n\tdelta.addOperation( move );\n\tthis.document.applyOperation( move );\n\n\t// Computing new position because we moved some nodes before `element`.\n\t// If we would cache `Position.createBefore( element )` we remove wrong node.\n\tconst remove = new RemoveOperation( Position.createBefore( element ), 1, this.document.version );\n\tdelta.addOperation( remove );\n\tthis.document.applyOperation( remove );\n\n\treturn this;\n} );\n\nDeltaFactory.register( UnwrapDelta );\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/delta/unwrapdelta.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/delta/wrapdelta\n */\n\nimport Delta from './delta';\nimport DeltaFactory from './deltafactory';\nimport UnwrapDelta from './unwrapdelta';\nimport { register } from '../batch';\nimport Position from '../position';\nimport Range from '../range';\nimport Element from '../element';\nimport InsertOperation from '../operation/insertoperation';\nimport MoveOperation from '../operation/moveoperation';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/**\n * @classdesc\n * To provide specific OT behavior and better collisions solving, {@link module:engine/model/batch~Batch#merge} method\n * uses the `WrapDelta` class which inherits from the `Delta` class and may overwrite some methods.\n */\nexport default class WrapDelta extends Delta {\n\t/**\n\t * @inheritDoc\n\t */\n\tget type() {\n\t\treturn 'wrap';\n\t}\n\n\t/**\n\t * Range to wrap or `null` if there are no operations in the delta.\n\t *\n\t * @type {module:engine/model/range~Range|null}\n\t */\n\tget range() {\n\t\tlet moveOp = this._moveOperation;\n\n\t\treturn moveOp ? Range.createFromPositionAndShift( moveOp.sourcePosition, moveOp.howMany ) : null;\n\t}\n\n\t/**\n\t * Offset size of range to wrap by the delta or `null` if there are no operations in delta.\n\t *\n\t * @type {Number}\n\t */\n\tget howMany() {\n\t\tlet range = this.range;\n\n\t\treturn range ? range.end.offset - range.start.offset : 0;\n\t}\n\n\t/**\n\t * Operation that inserts wrapping element or `null` if there are no operations in the delta.\n\t *\n\t * @protected\n\t * @type {module:engine/model/operation/insertoperation~InsertOperation|module:engine/model/operation/reinsertoperation~ReinsertOperation}\n\t */\n\tget _insertOperation() {\n\t\treturn this.operations[ 0 ] || null;\n\t}\n\n\t/**\n\t * Operation that moves wrapped nodes to their new parent or `null` if there are no operations in the delta.\n\t *\n\t * @protected\n\t * @type {module:engine/model/operation/moveoperation~MoveOperation|null}\n\t */\n\tget _moveOperation() {\n\t\treturn this.operations[ 1 ] || null;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tget _reverseDeltaClass() {\n\t\treturn UnwrapDelta;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.delta.WrapDelta';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get _priority() {\n\t\treturn 10;\n\t}\n}\n\n/**\n * Wraps given range with given element or with a new element with specified name, if string has been passed.\n * **Note:** range to wrap should be a \"flat range\" (see {@link module:engine/model/range~Range#isFlat}). If not, error will be thrown.\n *\n * @chainable\n * @method module:engine/model/batch~Batch#wrap\n * @param {module:engine/model/range~Range} range Range to wrap.\n * @param {module:engine/model/element~Element|String} elementOrString Element or name of element to wrap the range with.\n */\nregister( 'wrap', function( range, elementOrString ) {\n\tif ( !range.isFlat ) {\n\t\t/**\n\t\t * Range to wrap is not flat.\n\t\t *\n\t\t * @error batch-wrap-range-not-flat\n\t\t */\n\t\tthrow new CKEditorError( 'batch-wrap-range-not-flat: Range to wrap is not flat.' );\n\t}\n\n\tlet element = elementOrString instanceof Element ? elementOrString : new Element( elementOrString );\n\n\tif ( element.childCount > 0 ) {\n\t\t/**\n\t\t * Element to wrap with is not empty.\n\t\t *\n\t\t * @error batch-wrap-element-not-empty\n\t\t */\n\t\tthrow new CKEditorError( 'batch-wrap-element-not-empty: Element to wrap with is not empty.' );\n\t}\n\n\tif ( element.parent !== null ) {\n\t\t/**\n\t\t * Element to wrap with is already attached to a tree model.\n\t\t *\n\t\t * @error batch-wrap-element-attached\n\t\t */\n\t\tthrow new CKEditorError( 'batch-wrap-element-attached: Element to wrap with is already attached to tree model.' );\n\t}\n\n\tconst delta = new WrapDelta();\n\tthis.addDelta( delta );\n\n\tlet insert = new InsertOperation( range.end, element, this.document.version );\n\tdelta.addOperation( insert );\n\tthis.document.applyOperation( insert );\n\n\tlet targetPosition = Position.createFromParentAndOffset( element, 0 );\n\tlet move = new MoveOperation( range.start, range.end.offset - range.start.offset, targetPosition, this.document.version );\n\tdelta.addOperation( move );\n\tthis.document.applyOperation( move );\n\n\treturn this;\n} );\n\nDeltaFactory.register( WrapDelta );\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/delta/wrapdelta.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/liverange\n */\n\nimport Range from './range';\nimport EmitterMixin from '@ckeditor/ckeditor5-utils/src/emittermixin';\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\n\n/**\n * `LiveRange` is a type of {@link module:engine/model/range~Range Range}\n * that updates itself as {@link module:engine/model/document~Document document}\n * is changed through operations. It may be used as a bookmark.\n *\n * **Note:** Be very careful when dealing with `LiveRange`. Each `LiveRange` instance bind events that might\n * have to be unbound. Use {@link module:engine/model/liverange~LiveRange#detach detach} whenever you don't need `LiveRange` anymore.\n */\nexport default class LiveRange extends Range {\n\t/**\n\t * Creates a live range.\n\t *\n\t * @see module:engine/model/range~Range\n\t */\n\tconstructor( start, end ) {\n\t\tsuper( start, end );\n\n\t\tbindWithDocument.call( this );\n\t}\n\n\t/**\n\t * Unbinds all events previously bound by `LiveRange`. Use it whenever you don't need `LiveRange` instance\n\t * anymore (i.e. when leaving scope in which it was declared or before re-assigning variable that was\n\t * referring to it).\n\t */\n\tdetach() {\n\t\tthis.stopListening();\n\t}\n\n\t/**\n\t * @see module:engine/model/range~Range.createIn\n\t * @static\n\t * @method module:engine/model/liverange~LiveRange.createIn\n\t * @param {module:engine/model/element~Element} element\n\t * @returns {module:engine/model/liverange~LiveRange}\n\t */\n\n\t/**\n\t * @see module:engine/model/range~Range.createFromPositionAndShift\n\t * @static\n\t * @method module:engine/model/liverange~LiveRange.createFromPositionAndShift\n\t * @param {module:engine/model/position~Position} position\n\t * @param {Number} shift\n\t * @returns {module:engine/model/liverange~LiveRange}\n\t */\n\n\t/**\n\t * @see module:engine/model/range~Range.createFromParentsAndOffsets\n\t * @static\n\t * @method module:engine/model/liverange~LiveRange.createFromParentsAndOffsets\n\t * @param {module:engine/model/element~Element} startElement\n\t * @param {Number} startOffset\n\t * @param {module:engine/model/element~Element} endElement\n\t * @param {Number} endOffset\n\t * @returns {module:engine/model/liverange~LiveRange}\n\t */\n\n\t/**\n\t * @see module:engine/model/range~Range.createFromRange\n\t * @static\n\t * @method module:engine/model/liverange~LiveRange.createFromRange\n\t * @param {module:engine/model/range~Range} range\n\t * @returns {module:engine/model/liverange~LiveRange}\n\t */\n\n\t/**\n\t * Fired when `LiveRange` instance is changed due to changes on {@link module:engine/model/document~Document}.\n\t *\n\t * @event change\n\t * @param {module:engine/model/range~Range} oldRange\n\t * Range with start and end position equal to start and end position of this live range before it got changed.\n\t */\n}\n\n/**\n * Binds this `LiveRange` to the {@link module:engine/model/document~Document document}\n * that owns this range's {@link module:engine/model/range~Range#root root}.\n *\n * @ignore\n * @private\n * @method module:engine/model/liverange~LiveRange#bindWithDocument\n */\nfunction bindWithDocument() {\n\t/*jshint validthis: true */\n\t// Operation types that a range can be transformed by.\n\tconst supportedTypes = new Set( [ 'insert', 'move', 'remove', 'reinsert' ] );\n\n\tthis.listenTo(\n\t\tthis.root.document,\n\t\t'change',\n\t\t( event, type, changes, batch, deltaType ) => {\n\t\t\tif ( supportedTypes.has( type ) ) {\n\t\t\t\ttransform.call( this, type, deltaType, changes.range, changes.sourcePosition );\n\t\t\t}\n\t\t},\n\t\t{ priority: 'high' }\n\t);\n}\n\n/**\n * Updates this range accordingly to the updates applied to the model. Bases on change events.\n *\n * @ignore\n * @private\n * @method transform\n * @param {String} [changeType] Type of change applied to the model document.\n * @param {String} [deltaType] Type of delta which introduced the change.\n * @param {module:engine/model/range~Range} targetRange Range containing the result of applied change.\n * @param {module:engine/model/position~Position} [sourcePosition] Source position for move, remove and reinsert change types.\n */\nfunction transform( changeType, deltaType, targetRange, sourcePosition ) {\n\t/* jshint validthis: true */\n\tconst howMany = targetRange.end.offset - targetRange.start.offset;\n\tlet targetPosition = targetRange.start;\n\n\tif ( changeType == 'move' ) {\n\t\t// Range._getTransformedByDocumentChange is expecting `targetPosition` to be \"before\" move\n\t\t// (before transformation). `targetRange.start` is already after the move happened.\n\t\t// We have to revert `targetPosition` to the state before the move.\n\t\ttargetPosition = targetPosition._getTransformedByInsertion( sourcePosition, howMany );\n\t}\n\n\tconst result = this._getTransformedByDocumentChange( changeType, deltaType, targetPosition, howMany, sourcePosition );\n\n\t// Decide whether moved part should be included in the range.\n\t//\n\t// First, this concerns only `move` change, because insert change includes inserted part always (changeType == 'move').\n\t// Second, this is a case only if moved range was intersecting with this range and was inserted into this range (result.length == 3).\n\tif ( changeType == 'move' && result.length == 3 ) {\n\t\t// `result[ 2 ]` is a \"common part\" of this range and moved range. We substitute that common part with the whole\n\t\t// `targetRange` because we want to include whole `targetRange` in this range.\n\t\tresult[ 2 ] = targetRange;\n\t}\n\n\tconst updated = Range.createFromRanges( result );\n\n\t// If anything changed, update the range and fire an event.\n\tif ( !updated.isEqual( this ) ) {\n\t\tconst oldRange = Range.createFromRange( this );\n\n\t\tthis.start = updated.start;\n\t\tthis.end = updated.end;\n\n\t\tthis.fire( 'change', oldRange );\n\t}\n}\n\nmix( LiveRange, EmitterMixin );\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/liverange.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/operation/markeroperation\n */\n\nimport Operation from './operation';\nimport Range from '../range';\n\n/**\n * @extends module:engine/model/operation/operation~Operation\n */\nexport default class MarkerOperation extends Operation {\n\t/**\n\t * @param {String} name Marker name.\n\t * @param {module:engine/model/range~Range} oldRange Marker range before the change.\n\t * @param {module:engine/model/range~Range} newRange Marker range after the change.\n\t * @param {module:engine/model/markercollection~MarkerCollection} markers Marker collection on which change should be executed.\n\t * @param {Number} baseVersion {@link module:engine/model/document~Document#version} on which the operation can be applied.\n\t */\n\tconstructor( name, oldRange, newRange, markers, baseVersion ) {\n\t\tsuper( baseVersion );\n\n\t\t/**\n\t\t * Marker name.\n\t\t *\n\t\t * @readonly\n\t\t * @member {String}\n\t\t */\n\t\tthis.name = name;\n\n\t\t/**\n\t\t * Marker range before the change.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/model/range~Range}\n\t\t */\n\t\tthis.oldRange = oldRange ? Range.createFromRange( oldRange ) : null;\n\n\t\t/**\n\t\t * Marker range after the change.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/model/range~Range}\n\t\t */\n\t\tthis.newRange = newRange ? Range.createFromRange( newRange ) : null;\n\n\t\t/**\n\t\t * Marker collection on which change should be executed.\n\t\t *\n\t\t * @private\n\t\t * @member {module:engine/model/markercollection~MarkerCollection}\n\t\t */\n\t\tthis._markers = markers;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tget type() {\n\t\treturn 'marker';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t * @returns {module:engine/model/operation/markeroperation~MarkerOperation}\n\t */\n\tclone() {\n\t\treturn new MarkerOperation( this.name, this.oldRange, this.newRange, this._markers, this.baseVersion );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t * @returns {module:engine/model/operation/markeroperation~MarkerOperation}\n\t */\n\tgetReversed() {\n\t\treturn new MarkerOperation( this.name, this.newRange, this.oldRange, this._markers, this.baseVersion + 1 );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\t_execute() {\n\t\tconst type = this.newRange ? 'set' : 'remove';\n\n\t\tthis._markers[ type ]( this.name, this.newRange );\n\n\t\treturn { name: this.name, type: type };\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\ttoJSON() {\n\t\tconst json = super.toJSON();\n\n\t\tdelete json._markers;\n\n\t\treturn json;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.operation.MarkerOperation';\n\t}\n\n\t/**\n\t * Creates `MarkerOperation` object from deserilized object, i.e. from parsed JSON string.\n\t *\n\t * @param {Object} json Deserialized JSON object.\n\t * @param {module:engine/model/document~Document} document Document on which this operation will be applied.\n\t * @returns {module:engine/model/operation/markeroperation~MarkerOperation}\n\t */\n\tstatic fromJSON( json, document ) {\n\t\treturn new MarkerOperation(\n\t\t\tjson.name,\n\t\t\tjson.oldRange ? Range.fromJSON( json.oldRange, document ) : null,\n\t\t\tjson.newRange ? Range.fromJSON( json.newRange, document ) : null,\n\t\t\tdocument.markers,\n\t\t\tjson.baseVersion\n\t\t);\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/operation/markeroperation.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/operation/reinsertoperation\n */\n\nimport MoveOperation from './moveoperation';\nimport RemoveOperation from './removeoperation';\n\n/**\n * Operation to reinsert previously removed nodes back to the non-graveyard root. This operation acts like\n * {@link module:engine/model/operation/moveoperation~MoveOperation} but it returns\n * {@link module:engine/model/operation/removeoperation~RemoveOperation} when reversed\n * and fires different change event.\n */\nexport default class ReinsertOperation extends MoveOperation {\n\t/**\n\t * Position where nodes will be re-inserted.\n\t *\n\t * @type {module:engine/model/position~Position}\n\t */\n\tget position() {\n\t\treturn this.targetPosition;\n\t}\n\n\t/**\n\t * @param {module:engine/model/position~Position} pos\n\t */\n\tset position( pos ) {\n\t\tthis.targetPosition = pos;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tget type() {\n\t\treturn 'reinsert';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t * @returns {module:engine/model/operation/removeoperation~RemoveOperation}\n\t */\n\tgetReversed() {\n\t\treturn new RemoveOperation( this.targetPosition, this.howMany, this.baseVersion + 1 );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.operation.ReinsertOperation';\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/operation/reinsertoperation.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/operation/renameoperation\n */\n\nimport Operation from './operation';\nimport Element from '../element';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\nimport Position from '../position';\n\n/**\n * Operation to change element's name.\n *\n * Using this class you can change element's name.\n *\n * @extends module:engine/model/operation/operation~Operation\n */\nexport default class RenameOperation extends Operation {\n\t/**\n\t * Creates an operation that changes element's name.\n\t *\n\t * @param {module:engine/model/position~Position} position Position before an element to change.\n\t * @param {String} oldName Current name of the element.\n\t * @param {String} newName New name for the element.\n\t * @param {Number} baseVersion {@link module:engine/model/document~Document#version} on which the operation can be applied.\n\t */\n\tconstructor( position, oldName, newName, baseVersion ) {\n\t\tsuper( baseVersion );\n\n\t\t/**\n\t\t * Position before an element to change.\n\t\t *\n\t\t * @member {module:engine/model/position~Position} module:engine/model/operation/renameoperation~RenameOperation#position\n\t\t */\n\t\tthis.position = position;\n\n\t\t/**\n\t\t * Current name of the element.\n\t\t *\n\t\t * @member {String} module:engine/model/operation/renameoperation~RenameOperation#oldName\n\t\t */\n\t\tthis.oldName = oldName;\n\n\t\t/**\n\t\t * New name for the element.\n\t\t *\n\t\t * @member {String} module:engine/model/operation/renameoperation~RenameOperation#newName\n\t\t */\n\t\tthis.newName = newName;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tget type() {\n\t\treturn 'rename';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t * @returns {module:engine/model/operation/renameoperation~RenameOperation}\n\t */\n\tclone() {\n\t\treturn new RenameOperation( Position.createFromPosition( this.position ), this.oldName, this.newName, this.baseVersion );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t * @returns {module:engine/model/operation/renameoperation~RenameOperation}\n\t */\n\tgetReversed() {\n\t\treturn new RenameOperation( Position.createFromPosition( this.position ), this.newName, this.oldName, this.baseVersion + 1 );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\t_execute() {\n\t\t// Validation.\n\t\tconst element = this.position.nodeAfter;\n\n\t\tif ( !( element instanceof Element ) ) {\n\t\t\t/**\n\t\t\t * Given position is invalid or node after it is not instance of Element.\n\t\t\t *\n\t\t\t * @error rename-operation-wrong-position\n\t\t\t */\n\t\t\tthrow new CKEditorError(\n\t\t\t\t'rename-operation-wrong-position: Given position is invalid or node after it is not an instance of Element.'\n\t\t\t);\n\t\t} else if ( element.name !== this.oldName ) {\n\t\t\t/**\n\t\t\t * Element to change has different name than operation's old name.\n\t\t\t *\n\t\t\t * @error rename-operation-wrong-name\n\t\t\t */\n\t\t\tthrow new CKEditorError(\n\t\t\t\t'rename-operation-wrong-name: Element to change has different name than operation\\'s old name.'\n\t\t\t);\n\t\t}\n\n\t\t// If value to set is same as old value, don't do anything.\n\t\t// By not returning `undefined`, this operation will be seen as `NoOperation` - that means\n\t\t// that it won't generate any events, etc. `RenameOperation` with such parameters may be\n\t\t// a result of Operational Transformation.\n\t\tif ( this.oldName == this.newName ) {\n\t\t\treturn;\n\t\t}\n\n\t\telement.name = this.newName;\n\n\t\treturn { element, oldName: this.oldName };\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.operation.RenameOperation';\n\t}\n\n\t/**\n\t * Creates `RenameOperation` object from deserialized object, i.e. from parsed JSON string.\n\t *\n\t * @param {Object} json Deserialized JSON object.\n\t * @param {module:engine/model/document~Document} document Document on which this operation will be applied.\n\t * @returns {module:engine/model/operation/attributeoperation~AttributeOperation}\n\t */\n\tstatic fromJSON( json, document ) {\n\t\treturn new RenameOperation( Position.fromJSON( json.position, document ), json.oldName, json.newName, json.baseVersion );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/operation/renameoperation.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/operation/rootattributeoperation\n */\n\nimport Operation from './operation';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/**\n * Operation to change root element's attribute. Using this class you can add, remove or change value of the attribute.\n *\n * This operation is needed, because root elements can't be changed through\n * @link module:engine/model/operation/attributeoperation~AttributeOperation}.\n * It is because {@link module:engine/model/operation/attributeoperation~AttributeOperation}\n * requires a range to change and root element can't\n * be a part of range because every {@link module:engine/model/position~Position} has to be inside a root.\n * {@link module:engine/model/position~Position} can't be created before a root element.\n *\n * @extends module:engine/model/operation/operation~Operation\n */\nexport default class RootAttributeOperation extends Operation {\n\t/**\n\t * Creates an operation that changes, removes or adds attributes on root element.\n\t *\n\t * @see module:engine/model/operation/attributeoperation~AttributeOperation\n\t * @param {module:engine/model/rootelement~RootElement} root Root element to change.\n\t * @param {String} key Key of an attribute to change or remove.\n\t * @param {*} oldValue Old value of the attribute with given key or `null` if adding a new attribute.\n\t * @param {*} newValue New value to set for the attribute. If `null`, then the operation just removes the attribute.\n\t * @param {Number} baseVersion {@link module:engine/model/document~Document#version} on which the operation can be applied.\n\t */\n\tconstructor( root, key, oldValue, newValue, baseVersion ) {\n\t\tsuper( baseVersion );\n\n\t\t/**\n\t\t * Root element to change.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/model/rootelement~RootElement}\n\t\t */\n\t\tthis.root = root;\n\n\t\t/**\n\t\t * Key of an attribute to change or remove.\n\t\t *\n\t\t * @readonly\n\t\t * @member {String}\n\t\t */\n\t\tthis.key = key;\n\n\t\t/**\n\t\t * Old value of the attribute with given key or `null` if adding a new attribute.\n\t\t *\n\t\t * @readonly\n\t\t * @member {*}\n\t\t */\n\t\tthis.oldValue = oldValue;\n\n\t\t/**\n\t\t * New value to set for the attribute. If `null`, then the operation just removes the attribute.\n\t\t *\n\t\t * @readonly\n\t\t * @member {*}\n\t\t */\n\t\tthis.newValue = newValue;\n\t}\n\n\tget type() {\n\t\tif ( this.oldValue === null ) {\n\t\t\treturn 'addRootAttribute';\n\t\t} else if ( this.newValue === null ) {\n\t\t\treturn 'removeRootAttribute';\n\t\t} else {\n\t\t\treturn 'changeRootAttribute';\n\t\t}\n\t}\n\n\t/**\n\t * @returns {module:engine/model/operation/rootattributeoperation~RootAttributeOperation}\n\t */\n\tclone() {\n\t\treturn new RootAttributeOperation( this.root, this.key, this.oldValue, this.newValue, this.baseVersion );\n\t}\n\n\t/**\n\t * @returns {module:engine/model/operation/rootattributeoperation~RootAttributeOperation}\n\t */\n\tgetReversed() {\n\t\treturn new RootAttributeOperation( this.root, this.key, this.newValue, this.oldValue, this.baseVersion + 1 );\n\t}\n\n\t_execute() {\n\t\tif ( this.oldValue !== null && this.root.getAttribute( this.key ) !== this.oldValue ) {\n\t\t\t/**\n\t\t\t * The attribute which should be removed does not exists for the given node.\n\t\t\t *\n\t\t\t * @error rootattribute-operation-wrong-old-value\n\t\t\t * @param {module:engine/model/rootelement~RootElement} root\n\t\t\t * @param {String} key\n\t\t\t * @param {*} value\n\t\t\t */\n\t\t\tthrow new CKEditorError(\n\t\t\t\t'rootattribute-operation-wrong-old-value: Changed node has different attribute value than operation\\'s old attribute value.',\n\t\t\t\t{ root: this.root, key: this.key }\n\t\t\t);\n\t\t}\n\n\t\tif ( this.oldValue === null && this.newValue !== null && this.root.hasAttribute( this.key ) ) {\n\t\t\t/**\n\t\t\t * The attribute with given key already exists for the given node.\n\t\t\t *\n\t\t\t * @error rootattribute-operation-attribute-exists\n\t\t\t * @param {module:engine/model/rootelement~RootElement} root\n\t\t\t * @param {String} key\n\t\t\t */\n\t\t\tthrow new CKEditorError(\n\t\t\t\t'rootattribute-operation-attribute-exists: The attribute with given key already exists.',\n\t\t\t\t{ root: this.root, key: this.key }\n\t\t\t);\n\t\t}\n\n\t\tif ( this.newValue !== null ) {\n\t\t\tthis.root.setAttribute( this.key, this.newValue );\n\t\t} else {\n\t\t\tthis.root.removeAttribute( this.key );\n\t\t}\n\n\t\treturn { root: this.root, key: this.key, oldValue: this.oldValue, newValue: this.newValue };\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.operation.RootAttributeOperation';\n\t}\n\n\t/**\n\t * Creates RootAttributeOperation object from deserilized object, i.e. from parsed JSON string.\n\t *\n\t * @param {Object} json Deserialized JSON object.\n\t * @param {module:engine/model/document~Document} document Document on which this operation will be applied.\n\t * @returns {module:engine/model/operation/rootattributeoperation~RootAttributeOperation}\n\t */\n\tstatic fromJSON( json, document ) {\n\t\tif ( !document.hasRoot( json.root ) ) {\n\t\t\t/**\n\t\t\t * Cannot create RootAttributeOperation for document. Root with specified name does not exist.\n\t\t\t *\n\t\t\t * @error rootattributeoperation-fromjson-no-root\n\t\t\t * @param {String} rootName\n\t\t\t */\n\t\t\tthrow new CKEditorError(\n\t\t\t\t'rootattribute-operation-fromjson-no-root: Cannot create RootAttributeOperation. Root with specified name does not exist.',\n\t\t\t\t{ rootName: json }\n\t\t\t);\n\t\t}\n\n\t\treturn new RootAttributeOperation( document.getRoot( json.root ), json.key, json.oldValue, json.newValue, json.baseVersion );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/operation/rootattributeoperation.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/attributeelement\n */\n\nimport Element from './element';\n\n// Default attribute priority.\nconst DEFAULT_PRIORITY = 10;\n\n/**\n * Attributes are elements which define document presentation. They are mostly elements like `<b>` or `<span>`.\n * Attributes can be broken and merged by the {@link module:engine/view/writer~writer view writer}.\n *\n * Editing engine does not define fixed HTML DTD. This is why the type of the {@link module:engine/view/element~Element} need to\n * be defined by the feature developer. Creating an element you should use {@link module:engine/view/containerelement~ContainerElement}\n * class or `AttributeElement`.\n *\n * @extends module:engine/view/element~Element\n */\nexport default class AttributeElement extends Element {\n\t/**\n\t * Creates a attribute element.\n\t *\n\t * @see module:engine/view/element~Element\n\t */\n\tconstructor( name, attrs, children ) {\n\t\tsuper( name, attrs, children );\n\n\t\t/**\n\t\t * Element priority. Attributes have to have the same priority to be\n\t\t * {@link module:engine/view/element~Element#isSimilar similar}. Setting different priorities on similar\n \t\t * nodes may prevent merging, e.g. two `<abbr>` nodes next each other shouldn't be merged.\n\t\t *\n\t\t * @member {Number}\n\t\t */\n\t\tthis.priority = DEFAULT_PRIORITY;\n\n\t\t/**\n\t\t * Returns block {@link module:engine/view/filler filler} offset or `null` if block filler is not needed.\n\t\t *\n\t\t * @method #getFillerOffset\n\t\t * @returns {Number|null} Block filler offset or `null` if block filler is not needed.\n\t\t */\n\t\tthis.getFillerOffset = getFillerOffset;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tis( type, name = null ) {\n\t\tif ( !name ) {\n\t\t\treturn type == 'attributeElement' || super.is( type );\n\t\t} else {\n\t\t\treturn ( type == 'attributeElement' && name == this.name ) || super.is( type, name );\n\t\t}\n\t}\n\n\t/**\n\t * Clones provided element with priority.\n\t *\n\t * @param {Boolean} deep If set to `true` clones element and all its children recursively. When set to `false`,\n\t * element will be cloned without any children.\n\t * @returns {module:engine/view/attributeelement~AttributeElement} Clone of this element.\n\t */\n\tclone( deep ) {\n\t\tconst cloned = super.clone( deep );\n\n\t\t// Clone priority too.\n\t\tcloned.priority = this.priority;\n\n\t\treturn cloned;\n\t}\n\n\t/**\n\t * Checks if this element is similar to other element.\n\t * Both elements should have the same name, attributes and priority to be considered as similar.\n\t * Two similar elements can contain different set of children nodes.\n\t *\n\t * @param {module:engine/view/element~Element} otherElement\n\t * @returns {Boolean}\n\t */\n\tisSimilar( otherElement ) {\n\t\treturn super.isSimilar( otherElement ) && this.priority == otherElement.priority;\n\t}\n}\n\n/**\n * Default attribute priority.\n *\n * @member {Number} module:engine/view/attributeelement~AttributeElement.DEFAULT_PRIORITY\n */\nAttributeElement.DEFAULT_PRIORITY = DEFAULT_PRIORITY;\n\n// Returns block {@link module:engine/view/filler~Filler filler} offset or `null` if block filler is not needed.\n//\n// @returns {Number|null} Block filler offset or `null` if block filler is not needed.\nfunction getFillerOffset() {\n\t/*jshint validthis:true */\n\n\t// <b>foo</b> does not need filler.\n\tif ( this.childCount ) {\n\t\treturn null;\n\t}\n\n\tlet element = this.parent;\n\n\t// <p><b></b></p> needs filler -> <p><b><br></b></p>\n\twhile ( element && element.is( 'attributeElement' ) ) {\n\t\tif ( element.childCount > 1 ) {\n\t\t\treturn null;\n\t\t}\n\n\t\telement = element.parent;\n\t}\n\n\tif ( !element || element.childCount > 1 ) {\n\t\treturn null;\n\t}\n\n\treturn 0;\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/view/attributeelement.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/documentfragment\n */\n\nimport Text from './text';\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\nimport isIterable from '@ckeditor/ckeditor5-utils/src/isiterable';\nimport EmitterMixin from '@ckeditor/ckeditor5-utils/src/emittermixin';\n\n/**\n * DocumentFragment class.\n */\nexport default class DocumentFragment {\n\t/**\n\t * Creates new DocumentFragment instance.\n\t *\n\t * @param {module:engine/view/node~Node|Iterable.<module:engine/view/node~Node>} [children] List of nodes to be inserted into\n\t * created document fragment.\n\t */\n\tconstructor( children ) {\n\t\t/**\n\t\t * Array of child nodes.\n\t\t *\n\t\t * @protected\n\t\t * @member {Array.<module:engine/view/element~Element>} module:engine/view/documentfragment~DocumentFragment#_children\n\t\t */\n\t\tthis._children = [];\n\n\t\tif ( children ) {\n\t\t\tthis.insertChildren( 0, children );\n\t\t}\n\t}\n\n\t/**\n\t * Iterates over nodes added to this DocumentFragment.\n\t */\n\t[ Symbol.iterator ]() {\n\t\treturn this._children[ Symbol.iterator ]();\n\t}\n\n\t/**\n\t * Number of child nodes in this document fragment.\n\t *\n\t * @readonly\n\t * @type {Number}\n\t */\n\tget childCount() {\n\t\treturn this._children.length;\n\t}\n\n\t/**\n\t * Is `true` if there are no nodes inside this document fragment, `false` otherwise.\n\t *\n\t * @readonly\n\t * @type {Boolean}\n\t */\n\tget isEmpty() {\n\t\treturn this.childCount === 0;\n\t}\n\n\t/**\n\t * Artificial root of `DocumentFragment`. Returns itself. Added for compatibility reasons.\n\t *\n\t * @readonly\n\t * @type {module:engine/model/documentfragment~DocumentFragment}\n\t */\n\tget root() {\n\t\treturn this;\n\t}\n\n\t/**\n\t * Artificial parent of `DocumentFragment`. Returns `null`. Added for compatibility reasons.\n\t *\n\t * @readonly\n\t * @type {null}\n\t */\n\tget parent() {\n\t\treturn null;\n\t}\n\n\t/**\n\t * Checks whether given view tree object is of given type.\n\t *\n\t * Read more in {@link module:engine/view/node~Node#is}.\n\t *\n\t * @param {String} type\n\t * @returns {Boolean}\n\t */\n\tis( type ) {\n\t\treturn type == 'documentFragment';\n\t}\n\n\t/**\n\t * {@link module:engine/view/documentfragment~DocumentFragment#insertChildren Insert} a child node or a list of child nodes at the end\n\t * and sets the parent of these nodes to this fragment.\n\t *\n\t * @param {module:engine/view/node~Node|Iterable.<module:engine/view/node~Node>} nodes Node or the list of nodes to be inserted.\n\t * @returns {Number} Number of appended nodes.\n\t */\n\tappendChildren( nodes ) {\n\t\treturn this.insertChildren( this.childCount, nodes );\n\t}\n\n\t/**\n\t * Gets child at the given index.\n\t *\n\t * @param {Number} index Index of child.\n\t * @returns {module:engine/view/node~Node} Child node.\n\t */\n\tgetChild( index ) {\n\t\treturn this._children[ index ];\n\t}\n\n\t/**\n\t * Gets index of the given child node. Returns `-1` if child node is not found.\n\t *\n\t * @param {module:engine/view/node~Node} node Child node.\n\t * @returns {Number} Index of the child node.\n\t */\n\tgetChildIndex( node ) {\n\t\treturn this._children.indexOf( node );\n\t}\n\n\t/**\n\t * Gets child nodes iterator.\n\t *\n\t * @returns {Iterable.<module:engine/view/node~Node>} Child nodes iterator.\n\t */\n\tgetChildren() {\n\t\treturn this._children[ Symbol.iterator ]();\n\t}\n\n\t/**\n\t * Inserts a child node or a list of child nodes on the given index and sets the parent of these nodes to\n\t * this fragment.\n\t *\n\t * @param {Number} index Position where nodes should be inserted.\n\t * @param {module:engine/view/node~Node|Iterable.<module:engine/view/node~Node>} nodes Node or list of nodes to be inserted.\n\t * @returns {Number} Number of inserted nodes.\n\t */\n\tinsertChildren( index, nodes ) {\n\t\tthis._fireChange( 'children', this );\n\t\tlet count = 0;\n\n\t\tnodes = normalize( nodes );\n\n\t\tfor ( let node of nodes ) {\n\t\t\tnode.parent = this;\n\n\t\t\tthis._children.splice( index, 0, node );\n\t\t\tindex++;\n\t\t\tcount++;\n\t\t}\n\n\t\treturn count;\n\t}\n\n\t/**\n\t * Removes number of child nodes starting at the given index and set the parent of these nodes to `null`.\n\t *\n\t * @param {Number} index Number of the first node to remove.\n\t * @param {Number} [howMany=1] Number of nodes to remove.\n\t * @returns {Array.<module:engine/view/node~Node>} The array of removed nodes.\n\t */\n\tremoveChildren( index, howMany = 1 ) {\n\t\tthis._fireChange( 'children', this );\n\n\t\tfor ( let i = index; i < index + howMany; i++ ) {\n\t\t\tthis._children[ i ].parent = null;\n\t\t}\n\n\t\treturn this._children.splice( index, howMany );\n\t}\n\n\t/**\n\t * Fires `change` event with given type of the change.\n\t *\n\t * @private\n\t * @param {module:engine/view/document~ChangeType} type Type of the change.\n\t * @param {module:engine/view/node~Node} node Changed node.\n\t * @fires module:engine/view/node~Node#change\n\t */\n\t_fireChange( type, node ) {\n\t\tthis.fire( 'change:' + type, node );\n\t}\n}\n\nmix( DocumentFragment, EmitterMixin );\n\n// Converts strings to Text and non-iterables to arrays.\n//\n// @param {String|module:engine/view/node~Node|Iterable.<String|module:engine/view/node~Node>}\n// @return {Iterable.<module:engine/view/node~Node>}\nfunction normalize( nodes ) {\n\t// Separate condition because string is iterable.\n\tif ( typeof nodes == 'string' ) {\n\t\treturn [ new Text( nodes ) ];\n\t}\n\n\tif ( !isIterable( nodes ) ) {\n\t\tnodes = [ nodes ];\n\t}\n\n\t// Array.from to enable .map() on non-arrays.\n\treturn Array.from( nodes ).map( ( node ) => typeof node == 'string' ? new Text( node ) : node );\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/view/documentfragment.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/matcher\n */\n\n/**\n * View matcher class.\n * Instance of this class can be used to find {@link module:engine/view/element~Element elements} that match given pattern.\n */\nexport default class Matcher {\n\t/**\n\t * Creates new instance of Matcher.\n\t *\n\t * @param {String|RegExp|Object} [pattern] Match patterns. See {@link module:engine/view/matcher~Matcher#add add method} for\n\t * more information.\n\t */\n\tconstructor( ...pattern ) {\n\t\tthis._patterns = [];\n\n\t\tthis.add( ...pattern );\n\t}\n\n\t/**\n\t * Adds pattern or patterns to matcher instance.\n\t *\n\t * Example patterns matching element's name:\n\t *\n\t *\t\t// String.\n\t *\t\tmatcher.add( 'div' );\n\t *\t\tmatcher.add( { name: 'div' } );\n\t *\n\t *\t\t// Regular expression.\n\t *\t\tmatcher.add( /^\\w/ );\n\t *\t\tmatcher.add( { name: /^\\w/ } );\n\t *\n\t * Example pattern matching element's attributes:\n\t *\n\t *\t\tmatcher.add( {\n\t *\t\t\tattributes: {\n\t *\t\t\t\ttitle: 'foobar',\n\t *\t\t\t\tfoo: /^\\w+/\n\t *\t\t\t}\n\t *\t\t} );\n\t *\n\t * Example patterns matching element's classes:\n\t *\n\t *\t\t// Single class.\n\t *\t\tmatcher.add( {\n\t *\t\t\tclass: 'foobar'\n\t *\t\t} );\n\t *\n\t *\t\t// Single class using regular expression.\n\t *\t\tmatcher.add( {\n\t *\t\t\tclass: /foo.../\n\t *\t\t} );\n\t *\n\t *\t\t// Multiple classes to match.\n\t *\t\tmatcher.add( {\n\t *\t\t\tclass: [ 'baz', 'bar', /foo.../ ]\n\t *\t\t} ):\n\t *\n\t * Example pattern matching element's styles:\n\t *\n\t *\t\tmatcher.add( {\n\t *\t\t\tstyle: {\n\t *\t\t\t\tposition: 'absolute',\n\t *\t\t\t\tcolor: /^\\w*blue$/\n\t *\t\t\t}\n\t *\t\t} );\n\t *\n\t * Example function pattern:\n\t *\n\t *\t\tmatcher.add( ( element ) => {\n\t *\t\t\t// Result of this function will be included in `match`\n\t *\t\t\t// property of the object returned from matcher.match() call.\n\t *\t\t\tif ( element.name === 'div' && element.childCount > 0 ) {\n\t *\t\t\t\treturn { name: true };\n\t *\t\t\t}\n\t *\n\t *\t\t\treturn null;\n\t *\t\t} );\n\t *\n\t * Multiple patterns can be added in one call:\n\t *\n\t * \t\tmatcher.add( 'div', { class: 'foobar' } );\n\t *\n\t * @param {Object|String|RegExp|Function} pattern Object describing pattern details. If string or regular expression\n\t * is provided it will be used to match element's name. Pattern can be also provided in a form\n\t * of a function - then this function will be called with each {@link module:engine/view/element~Element element} as a parameter.\n\t * Function's return value will be stored under `match` key of the object returned from\n\t * {@link module:engine/view/matcher~Matcher#match match} or {@link module:engine/view/matcher~Matcher#matchAll matchAll} methods.\n\t * @param {String|RegExp} [pattern.name] Name or regular expression to match element's name.\n\t * @param {Object} [pattern.attribute] Object with key-value pairs representing attributes to match. Each object key\n\t * represents attribute name. Value under that key can be either a string or a regular expression and it will be\n\t * used to match attribute value.\n\t * @param {String|RegExp|Array} [pattern.class] Class name or array of class names to match. Each name can be\n\t * provided in a form of string or regular expression.\n\t * @param {Object} [pattern.style] Object with key-value pairs representing styles to match. Each object key\n\t * represents style name. Value under that key can be either a string or a regular expression and it will be used\n\t * to match style value.\n\t */\n\tadd( ...pattern ) {\n\t\tfor ( let item of pattern ) {\n\t\t\t// String or RegExp pattern is used as element's name.\n\t\t\tif ( typeof item == 'string' || item instanceof RegExp ) {\n\t\t\t\titem = { name: item };\n\t\t\t}\n\n\t\t\t// Single class name/RegExp can be provided.\n\t\t\tif ( item.class && ( typeof item.class == 'string' || item.class instanceof RegExp ) ) {\n\t\t\t\titem.class = [ item.class ];\n\t\t\t}\n\n\t\t\tthis._patterns.push( item );\n\t\t}\n\t}\n\n\t/**\n\t * Matches elements for currently stored patterns. Returns match information about first found\n\t * {@link module:engine/view/element~Element element}, otherwise returns `null`.\n\t *\n\t * Example of returned object:\n\t *\n\t *\t\t{\n\t *\t\t\telement: <instance of found element>,\n\t *\t\t\tpattern: <pattern used to match found element>,\n\t *\t\t\tmatch: {\n\t *\t\t\t\tname: true,\n \t *\t\t\t\tattributes: [ 'title', 'href' ],\n\t *\t\t\t\tclasses: [ 'foo' ],\n \t *\t\t\t\tstyles: [ 'color', 'position' ]\n\t *\t\t\t}\n\t *\t\t}\n\t *\n\t * @see module:engine/view/matcher~Matcher#add\n\t * @see module:engine/view/matcher~Matcher#matchAll\n\t * @param {...module:engine/view/element~Element} element View element to match against stored patterns.\n\t * @returns {Object|null} result\n\t * @returns {module:engine/view/element~Element} result.element Matched view element.\n\t * @returns {Object|String|RegExp|Function} result.pattern Pattern that was used to find matched element.\n\t * @returns {Object} result.match Object representing matched element parts.\n\t * @returns {Boolean} [result.match.name] True if name of the element was matched.\n\t * @returns {Array} [result.match.attribute] Array with matched attribute names.\n\t * @returns {Array} [result.match.class] Array with matched class names.\n\t * @returns {Array} [result.match.style] Array with matched style names.\n\t */\n\tmatch( ...element ) {\n\t\tfor ( let singleElement of element ) {\n\t\t\tfor ( let pattern of this._patterns ) {\n\t\t\t\tconst match = isElementMatching( singleElement, pattern );\n\n\t\t\t\tif ( match ) {\n\t\t\t\t\treturn {\n\t\t\t\t\t\telement: singleElement,\n\t\t\t\t\t\tpattern: pattern,\n\t\t\t\t\t\tmatch: match\n\t\t\t\t\t};\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn null;\n\t}\n\n\t/**\n\t * Matches elements for currently stored patterns. Returns array of match information with all found\n\t * {@link module:engine/view/element~Element elements}. If no element is found - returns `null`.\n\t *\n\t * @see module:engine/view/matcher~Matcher#add\n\t * @see module:engine/view/matcher~Matcher#match\n\t * @param {...module:engine/view/element~Element} element View element to match against stored patterns.\n\t * @returns {Array.<Object>|null} Array with match information about found elements or `null`. For more information\n\t * see {@link module:engine/view/matcher~Matcher#match match method} description.\n\t */\n\tmatchAll( ...element ) {\n\t\tconst results = [];\n\n\t\tfor ( let singleElement of element ) {\n\t\t\tfor ( let pattern of this._patterns ) {\n\t\t\t\tconst match = isElementMatching( singleElement, pattern );\n\n\t\t\t\tif ( match ) {\n\t\t\t\t\tresults.push( {\n\t\t\t\t\t\telement: singleElement,\n\t\t\t\t\t\tpattern: pattern,\n\t\t\t\t\t\tmatch: match\n\t\t\t\t\t} );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn results.length > 0 ? results : null;\n\t}\n\n\t/**\n\t * Returns the name of the element to match if there is exactly one pattern added to the matcher instance\n\t * and it matches element name defined by `string` (not `RegExp`). Otherwise, returns `null`.\n\t *\n\t * @returns {String|null} Element name trying to match.\n\t */\n\tgetElementName() {\n\t\tif ( this._patterns.length !== 1 ) {\n\t\t\treturn null;\n\t\t}\n\n\t\tconst pattern = this._patterns[ 0 ];\n\t\tconst name = pattern.name;\n\n\t\treturn ( typeof pattern != 'function' && name && !( name instanceof RegExp ) ) ? name : null;\n\t}\n\n}\n\n// Returns match information if {@link module:engine/view/element~Element element} is matching provided pattern.\n// If element cannot be matched to provided pattern - returns `null`.\n//\n// @param {module:engine/view/element~Element} element\n// @param {Object|String|RegExp|Function} pattern\n// @returns {Object|null} Returns object with match information or null if element is not matching.\nfunction isElementMatching( element, pattern ) {\n\t// If pattern is provided as function - return result of that function;\n\tif ( typeof pattern == 'function' ) {\n\t\treturn pattern( element );\n\t}\n\n\tconst match = {};\n\t// Check element's name.\n\tif ( pattern.name ) {\n\t\tmatch.name = matchName( pattern.name, element.name );\n\n\t\tif ( !match.name ) {\n\t\t\treturn null;\n\t\t}\n\t}\n\n\t// Check element's attributes.\n\tif ( pattern.attribute ) {\n\t\tmatch.attribute = matchAttributes( pattern.attribute, element );\n\n\t\tif ( !match.attribute ) {\n\t\t\treturn null;\n\t\t}\n\t}\n\n\t// Check element's classes.\n\tif ( pattern.class ) {\n\t\tmatch.class = matchClasses( pattern.class, element );\n\n\t\tif ( !match.class ) {\n\t\t\treturn false;\n\t\t}\n\t}\n\n\t// Check element's styles.\n\tif ( pattern.style ) {\n\t\tmatch.style = matchStyles( pattern.style, element );\n\n\t\tif ( !match.style ) {\n\t\t\treturn false;\n\t\t}\n\t}\n\n\treturn match;\n}\n\n// Checks if name can be matched by provided pattern.\n//\n// @param {String|RegExp} pattern\n// @param {String} name\n// @returns {Boolean} Returns `true` if name can be matched, `false` otherwise.\nfunction matchName( pattern, name ) {\n\t// If pattern is provided as RegExp - test against this regexp.\n\tif ( pattern instanceof RegExp ) {\n\t\treturn pattern.test( name );\n\t}\n\n\treturn pattern === name;\n}\n\n// Checks if attributes of provided element can be matched against provided patterns.\n//\n// @param {Object} patterns Object with information about attributes to match. Each key of the object will be\n// used as attribute name. Value of each key can be a string or regular expression to match against attribute value.\n// @param {module:engine/view/element~Element} element Element which attributes will be tested.\n// @returns {Array|null} Returns array with matched attribute names or `null` if no attributes were matched.\nfunction matchAttributes( patterns, element ) {\n\tconst match = [];\n\n\tfor ( let name in patterns ) {\n\t\tconst pattern = patterns[ name ];\n\n\t\tif ( element.hasAttribute( name ) ) {\n\t\t\tconst attribute = element.getAttribute( name );\n\n\t\t\tif ( pattern instanceof RegExp ) {\n\t\t\t\tif ( pattern.test( attribute ) ) {\n\t\t\t\t\tmatch.push( name );\n\t\t\t\t} else {\n\t\t\t\t\treturn null;\n\t\t\t\t}\n\t\t\t} else if ( attribute === pattern  ) {\n\t\t\t\tmatch.push( name );\n\t\t\t} else {\n\t\t\t\treturn null;\n\t\t\t}\n\t\t} else {\n\t\t\treturn null;\n\t\t}\n\t}\n\n\treturn match;\n}\n\n// Checks if classes of provided element can be matched against provided patterns.\n//\n// @param {Array.<String|RegExp>} patterns Array of strings or regular expressions to match against element's classes.\n// @param {module:engine/view/element~Element} element Element which classes will be tested.\n// @returns {Array|null} Returns array with matched class names or `null` if no classes were matched.\nfunction matchClasses( patterns, element ) {\n\tconst match = [];\n\n\tfor ( let pattern of patterns ) {\n\t\tif ( pattern instanceof RegExp ) {\n\t\t\tconst classes = element.getClassNames();\n\n\t\t\tfor ( let name of classes ) {\n\t\t\t\tif ( pattern.test( name ) ) {\n\t\t\t\t\tmatch.push( name );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tif ( match.length === 0 ) {\n\t\t\t\treturn null;\n\t\t\t}\n\t\t} else if ( element.hasClass( pattern ) ) {\n\t\t\tmatch.push( pattern );\n\t\t} else {\n\t\t\treturn null;\n\t\t}\n\t}\n\n\treturn match;\n}\n\n// Checks if styles of provided element can be matched against provided patterns.\n//\n// @param {Object} patterns Object with information about styles to match. Each key of the object will be\n// used as style name. Value of each key can be a string or regular expression to match against style value.\n// @param {module:engine/view/element~Element} element Element which styles will be tested.\n// @returns {Array|null} Returns array with matched style names or `null` if no styles were matched.\nfunction matchStyles( patterns, element ) {\n\tconst match = [];\n\n\tfor ( let name in patterns ) {\n\t\tconst pattern = patterns[ name ];\n\n\t\tif ( element.hasStyle( name ) ) {\n\t\t\tconst style = element.getStyle( name );\n\n\t\t\tif ( pattern instanceof RegExp ) {\n\t\t\t\tif ( pattern.test( style ) ) {\n\t\t\t\t\tmatch.push( name );\n\t\t\t\t} else {\n\t\t\t\t\treturn null;\n\t\t\t\t}\n\t\t\t} else if ( style === pattern  ) {\n\t\t\t\tmatch.push( name );\n\t\t\t} else {\n\t\t\t\treturn null;\n\t\t\t}\n\t\t} else {\n\t\t\treturn null;\n\t\t}\n\t}\n\n\treturn match;\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/view/matcher.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/observer/domeventdata\n */\n\nimport extend from '@ckeditor/ckeditor5-utils/src/lib/lodash/extend';\n\n/**\n * Information about a DOM event in context of the {@link module:engine/view/document~Document}.\n * It wraps the native event, which usually should not be used as the wrapper contains\n * additional data (like key code for keyboard events).\n */\nexport default class DomEventData {\n\t/**\n\t * @param {module:engine/view/document~Document} document The instance of the tree view Document.\n\t * @param {Event} domEvent The DOM event.\n\t * @param {Object} [additionalData] Additional properties that the instance should contain.\n\t */\n\tconstructor( document, domEvent, additionalData ) {\n\t\t/**\n\t\t * The instance of the document.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/view/document~Document} module:engine/view/observer/observer~Observer.DomEvent#view\n\t\t */\n\t\tthis.document = document;\n\n\t\t/**\n\t\t * The DOM event.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Event} module:engine/view/observer/observer~Observer.DomEvent#domEvent\n\t\t */\n\t\tthis.domEvent = domEvent;\n\n\t\t/**\n\t\t * The DOM target.\n\t\t *\n\t\t * @readonly\n\t\t * @member {HTMLElement} module:engine/view/observer/observer~Observer.DomEvent#target\n\t\t */\n\t\tthis.domTarget = domEvent.target;\n\n\t\textend( this, additionalData );\n\t}\n\n\t/**\n\t * The tree view element representing the target.\n\t *\n\t * @readonly\n\t * @type module:engine/view/element~Element\n\t */\n\tget target() {\n\t\treturn this.document.domConverter.getCorrespondingViewElement( this.domTarget );\n\t}\n\n\t/**\n\t * Prevents the native's event default action.\n\t */\n\tpreventDefault() {\n\t\tthis.domEvent.preventDefault();\n\t}\n\n\t/**\n\t * Stops native event propagation.\n\t */\n\tstopPropagation() {\n\t\tthis.domEvent.stopPropagation();\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/view/observer/domeventdata.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module image/widget/utils\n */\n\nconst widgetSymbol = Symbol( 'isWidget' );\nconst labelSymbol = Symbol( 'label' );\n\n/**\n * CSS class added to each widget element.\n *\n * @const {String}\n */\nexport const WIDGET_CLASS_NAME = 'ck-widget';\n\n/**\n * CSS class added to currently selected widget element.\n *\n * @const {String}\n */\nexport const WIDGET_SELECTED_CLASS_NAME = 'ck-widget_selected';\n\n/**\n * Returns `true` if given {@link module:engine/view/element~Element} is a widget.\n *\n * @param {module:engine/view/element~Element} element\n * @returns {Boolean}\n */\nexport function isWidget( element ) {\n\treturn !!element.getCustomProperty( widgetSymbol );\n}\n\n/**\n * \"Widgetizes\" given {@link module:engine/view/element~Element}:\n * * sets `contenteditable` attribute to `true`,\n * * adds custom `getFillerOffset` method returning `null`,\n * * adds `ck-widget` CSS class,\n * * adds custom property allowing to recognize widget elements by using {@link ~isWidget}.\n *\n * @param {module:engine/view/element~Element} element\n * @param {Object} [options]\n * @param {String|Function} [options.label] Element's label provided to {@link ~setLabel} function. It can be passed as\n * a plain string or a function returning a string.\n * @returns {module:engine/view/element~Element} Returns same element.\n */\nexport function widgetize( element, options ) {\n\toptions = options || {};\n\telement.setAttribute( 'contenteditable', false );\n\telement.getFillerOffset = getFillerOffset;\n\telement.addClass( WIDGET_CLASS_NAME );\n\telement.setCustomProperty( widgetSymbol, true );\n\n\tif ( options.label ) {\n\t\tsetLabel( element, options.label );\n\t}\n\n\treturn element;\n}\n\n/**\n * Sets label for given element.\n * It can be passed as a plain string or a function returning a string. Function will be called each time label is retrieved by\n * {@link ~getLabel}.\n *\n * @param {module:engine/view/element~Element} element\n * @param {String|Function} labelOrCreator\n */\nexport function setLabel( element, labelOrCreator ) {\n\telement.setCustomProperty( labelSymbol, labelOrCreator );\n}\n\n/**\n * Returns label for provided element.\n *\n * @param {module:engine/view/element~Element} element\n * @return {String}\n */\nexport function getLabel( element ) {\n\tconst labelCreator = element.getCustomProperty( labelSymbol );\n\n\tif ( !labelCreator ) {\n\t\treturn '';\n\t}\n\n\treturn typeof labelCreator == 'function' ? labelCreator() : labelCreator;\n}\n\n// Default filler offset function applied to all widget elements.\n//\n// @returns {null}\nfunction getFillerOffset() {\n\treturn null;\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-image/src/widget/utils.js","/**\n * @license Copyright (c) 2003-2016, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/focuscycler\n */\n\n/**\n * Helps cycling over focusable views in a {@link module:ui/viewcollection~ViewCollection}\n * when the focus is tracked by {@link module:utils/focustracker~FocusTracker} instance.\n *\n * It requires a collection of focusable views and associated focus tracker:\n *\n *\t\tconst focusables = new ViewCollection();\n *\t\tconst focusTracker = new FocusTracker();\n *\n *\t\t// Add focusables to the focus tracker.\n *\t\tfocusTracker.add( ... );\n *\n * The cycler can be used manually:\n *\n *\t\tconst cycler = new FocusCycler( { focusables, focusTracker } );\n *\n *\t\t// Will focus the first forusable view in #focusables.\n *\t\tcycler.focusFirst();\n *\n *\t\t// Will log next focusable item in #focusables.\n *\t\tconsole.log( cycler.next );\n *\n * or it can be used as an automated, keystroke–detecting utility:\n *\n *\t\tconst keystrokeHandler = new KeystrokeHandler();\n *\n *\t\t// Activate the keystroke handler.\n *\t\tkeystrokeHandler.listenTo( sourceOfEvents );\n *\n *\t\tconst cycler = new FocusCycler( {\n *\t\t\tfocusables, focusTracker, keystrokeHandler,\n *\t\t\tactions: {\n *\t\t\t\t// When arrowup of arrowleft is detected by the #keystrokeHandler\n *\t\t\t\t// focusPrevious() will be called by the cycler.\n *\t\t\t\tfocusPrevious: [ 'arrowup', 'arrowleft' ],\n *\t\t\t}\n *\t\t} );\n */\nexport default class FocusCycler {\n\t/**\n\t * Creates an instance of the focus cycler utility.\n\t *\n\t * @param {Object} options Configuration options.\n\t * @param {module:utils/collection~Collection|Object} options.focusables\n\t * @param {module:utils/focustracker~FocusTracker} options.focusTracker\n\t * @param {module:core/keystrokehandler~KeystrokeHandler} [options.keystrokeHandler]\n\t * @param {Object} [options.actions]\n\t */\n\tconstructor( options ) {\n\t\tObject.assign( this, options );\n\n\t\t/**\n\t\t * A view collection the cycler operates on.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:utils/collection~Collection} #focusables\n\t\t */\n\n\t\t/**\n\t\t * A focus tracker instance that cycler uses to determine focus\n\t\t * state in {@link #viewCollection}.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:utils/focustracker~FocusTracker} #focusTracker\n\t\t */\n\n\t\t/**\n\t\t * Instance of the {@link module:core/keystrokehandler~KeystrokeHandler}.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:core/keystrokehandler~KeystrokeHandler} #keystrokeHandler\n\t\t */\n\n\t\t/**\n\t\t * Actions that the cycler can take when a keystroke is pressed. Requires\n\t\t * `options.keystrokeHandler` to be passed and working. When an action is\n\t\t * performed, the event the keystroke fired is will be `preventDefault` and\n\t\t * `stopPropagation` in DOM.\n\t\t *\n\t\t *\t\tactions: {\n\t\t *\t\t\t// Will call #focusPrevious() when arrowleft or arrowup is pressed.\n\t\t *\t\t\tfocusPrevious: [ 'arrowleft', 'arrowup' ],\n\t\t *\n\t\t *\t\t\t// Will call #focusNext() when arrowdown is pressed.\n\t\t *\t\t\tfocusNext: 'arrowdown'\n\t\t *\t\t}\n\t\t *\n\t\t * @readonly\n\t\t * @member {Object} #actions\n\t\t */\n\n\t\tif ( options.actions && options.keystrokeHandler ) {\n\t\t\tfor ( let methodName in options.actions ) {\n\t\t\t\tlet actions = options.actions[ methodName ];\n\n\t\t\t\tif ( typeof actions == 'string' ) {\n\t\t\t\t\tactions = [ actions ];\n\t\t\t\t}\n\n\t\t\t\tfor ( let keystroke of actions ) {\n\t\t\t\t\toptions.keystrokeHandler.set( keystroke, ( data, cancel ) => {\n\t\t\t\t\t\tthis[ methodName ]();\n\t\t\t\t\t\tcancel();\n\t\t\t\t\t} );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Returns the first focusable view in {@link #viewCollection}.\n\t * `null` if there's none.\n\t *\n\t * @readonly\n\t * @member {module:ui/view~View|null} #first\n\t */\n\tget first() {\n\t\treturn this.focusables.find( isFocusable ) || null;\n\t}\n\n\t/**\n\t * Returns the last focusable view in {@link #viewCollection}.\n\t * `null` if there's none.\n\t *\n\t * @readonly\n\t * @member {module:ui/view~View|null} #last\n\t */\n\tget last() {\n\t\treturn this.focusables.filter( isFocusable ).slice( -1 )[ 0 ] || null;\n\t}\n\n\t/**\n\t * Returns the next focusable view in {@link #viewCollection} based on {@link #current}.\n\t * `null` if there's none.\n\t *\n\t * @readonly\n\t * @member {module:ui/view~View|null} #next\n\t */\n\tget next() {\n\t\treturn this._getFocusableItem( 1 );\n\t}\n\n\t/**\n\t * Returns the previous focusable view in {@link #viewCollection} based on {@link #current}.\n\t * `null` if there's none.\n\t *\n\t * @readonly\n\t * @member {module:ui/view~View|null} #previous\n\t */\n\tget previous() {\n\t\treturn this._getFocusableItem( -1 );\n\t}\n\n\t/**\n\t * An index of the view in the {@link #viewCollection} which is focused according\n\t * to {@link #focusTracker}. `null` when there's no such view.\n\t *\n\t * @readonly\n\t * @member {Number|null} #current\n\t */\n\tget current() {\n\t\tlet index = null;\n\n\t\t// There's no focused view in the viewCollection.\n\t\tif ( this.focusTracker.focusedElement === null ) {\n\t\t\treturn null;\n\t\t}\n\n\t\tthis.focusables.find( ( view, viewIndex ) => {\n\t\t\tconst focused = view.element === this.focusTracker.focusedElement;\n\n\t\t\tif ( focused ) {\n\t\t\t\tindex = viewIndex;\n\t\t\t}\n\n\t\t\treturn focused;\n\t\t} );\n\n\t\treturn index;\n\t}\n\n\t/**\n\t * Focuses the {@link #first} item.\n\t */\n\tfocusFirst() {\n\t\tthis._focus( this.first );\n\t}\n\n\t/**\n\t * Focuses the {@link #last} item.\n\t */\n\tfocusLast() {\n\t\tthis._focus( this.last );\n\t}\n\n\t/**\n\t * Focuses the {@link #next} item.\n\t */\n\tfocusNext() {\n\t\tthis._focus( this.next );\n\t}\n\n\t/**\n\t * Focuses the {@link #previous} item.\n\t */\n\tfocusPrevious() {\n\t\tthis._focus( this.previous );\n\t}\n\n\t/**\n\t * Focuses the given view, if exists.\n\t *\n\t * @protected\n\t * @param {module:ui/view~View} view\n\t */\n\t_focus( view ) {\n\t\tif ( view ) {\n\t\t\tview.focus();\n\t\t}\n\t}\n\n\t/**\n\t * Returns the next/previous focusable view in {@link #viewCollection} with respect\n\t * to {@link #current}.\n\t *\n\t * @protected\n\t * @param {Number} step Either `1` for checking forward of {@link #current} or\n\t * `-1` for checking backwards.\n\t * @returns {module:ui/view~View|null}\n\t */\n\t_getFocusableItem( step ) {\n\t\t// Cache for speed.\n\t\tconst current = this.current;\n\t\tconst collectionLength = this.focusables.length;\n\n\t\tif ( !collectionLength || current === null ) {\n\t\t\treturn null;\n\t\t}\n\n\t\t// Cycle in both directions.\n\t\tlet index = ( current + collectionLength + step ) % collectionLength;\n\n\t\tdo {\n\t\t\tlet view = this.focusables.get( index );\n\n\t\t\t// TODO: Check if view is visible.\n\t\t\tif ( isFocusable( view ) ) {\n\t\t\t\treturn view;\n\t\t\t}\n\n\t\t\t// Cycle in both directions.\n\t\t\tindex = ( index + collectionLength + step ) % collectionLength;\n\t\t} while ( index !== current );\n\n\t\treturn null;\n\t}\n}\n\n// Checks whether an view is focusable.\n//\n// @private\n// @param {module:ui/view~View} view A view to be checked.\n// @returns {Boolean}\nfunction isFocusable( view ) {\n\treturn view.focus;\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-ui/src/focuscycler.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/viewcollection\n */\n\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\nimport ObservableMixin from '@ckeditor/ckeditor5-utils/src/observablemixin';\nimport Collection from '@ckeditor/ckeditor5-utils/src/collection';\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\nimport View from './view';\n\n/**\n * Collects {@link module:ui/view~View} instances.\n *\n * @extends module:utils/collection~Collection\n * @mixes module:utils/observablemixin~ObservableMixin\n */\nexport default class ViewCollection extends Collection {\n\t/**\n\t * Creates a new {@link module:ui/viewcollection~ViewCollection} instance.\n\t *\n\t * @param {module:utils/locale~Locale} [locale] The {@link module:core/editor~Editor editor's locale} instance.\n\t */\n\tconstructor( locale ) {\n\t\tsuper( {\n\t\t\t// An #id Number attribute should be legal and not break the `ViewCollection` instance.\n\t\t\t// https://github.com/ckeditor/ckeditor5-ui/issues/93\n\t\t\tidProperty: 'viewUid'\n\t\t} );\n\n\t\t// Handle {@link module:ui/view~View#element} in DOM when a new view is added to the collection.\n\t\tthis.on( 'add', ( evt, view, index ) => {\n\t\t\tif ( view.element && this._parentElement ) {\n\t\t\t\tthis._parentElement.insertBefore( view.element, this._parentElement.children[ index ] );\n\t\t\t}\n\t\t} );\n\n\t\t// Handle {@link module:ui/view~View#element} in DOM when a view is removed from the collection.\n\t\tthis.on( 'remove', ( evt, view ) => {\n\t\t\tif ( view.element && this._parentElement ) {\n\t\t\t\tview.element.remove();\n\t\t\t}\n\t\t} );\n\n\t\t/**\n\t\t * The {@link module:core/editor~Editor editor's locale} instance.\n\t\t *\n\t\t * @member {module:utils/locale~Locale}\n\t\t */\n\t\tthis.locale = locale;\n\n\t\t/**\n\t\t * Set to `true` once the parent's {@link module:ui/view~View#ready} is true, which means\n\t\t * that all the views in the collection are also ready (which can be asynchronous).\n\t\t *\n\t\t * @readonly\n\t\t * @observable\n\t\t * @member {Boolean} #ready\n\t\t */\n\t\tthis.set( 'ready', false );\n\n\t\t/**\n\t\t * A parent element within which child views are rendered and managed in DOM.\n\t\t *\n\t\t * @protected\n\t\t * @member {HTMLElement}\n\t\t */\n\t\tthis._parentElement = null;\n\n\t\t/**\n\t\t * A helper mapping between bound collection items passed to {@link #bindTo}\n\t\t * and view instances. Speeds up the view management.\n\t\t *\n\t\t * @protected\n\t\t * @member {HTMLElement}\n\t\t */\n\t\tthis._boundItemsToViewsMap = new Map();\n\t}\n\n\t/**\n\t * Initializes child views by injecting {@link module:ui/view~View#element} into DOM\n\t * and calling {@link module:ui/view~View#init}.\n\t *\n\t * @returns {Promise} A Promise resolved when the initialization process is finished.\n\t */\n\tinit() {\n\t\tif ( this.ready ) {\n\t\t\t/**\n\t\t\t * This ViewCollection has already been initialized.\n\t\t\t *\n\t\t\t * @error ui-viewcollection-init-reinit\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'ui-viewcollection-init-reinit: This ViewCollection has already been initialized.' );\n\t\t}\n\n\t\treturn Promise.all( this.map( v => v.init() ) )\n\t\t\t.then( () => {\n\t\t\t\tthis.ready = true;\n\t\t\t} );\n\t}\n\n\t/**\n\t * Destroys the view collection along with child views.\n\t *\n\t * @returns {Promise} A Promise resolved when the destruction process is finished.\n\t */\n\tdestroy() {\n\t\tlet promises = [];\n\n\t\tfor ( let view of this ) {\n\t\t\tpromises.push( view.destroy() );\n\t\t}\n\n\t\treturn Promise.all( promises );\n\t}\n\n\t/**\n\t * Adds a child view to the collection. If {@link module:ui/viewcollection~ViewCollection#ready}, the child view\n\t * is also initialized when added.\n\t *\n\t * @param {module:ui/view~View} view A child view.\n\t * @param {Number} [index] Index at which the child will be added to the collection.\n\t * @returns {Promise} A Promise resolved when the child {@link module:ui/view~View#init} is done.\n\t */\n\tadd( view, index ) {\n\t\tsuper.add( view, index );\n\n\t\t// {@link module:ui/view~View#init} returns `Promise`.\n\t\tlet promise = Promise.resolve();\n\n\t\tif ( this.ready && !view.ready ) {\n\t\t\tpromise = promise.then( () => {\n\t\t\t\treturn view.init();\n\t\t\t} );\n\t\t}\n\n\t\treturn promise;\n\t}\n\n\t/**\n\t * Sets {@link #_parentElement} of this collection.\n\t *\n\t * @param {HTMLElement} element A new parent.\n\t */\n\tsetParent( elementOrDocFragment ) {\n\t\tthis._parentElement = elementOrDocFragment;\n\t}\n\n\t/**\n\t * Binds this collection to {@link module:utils/collection~Collection another collection}. For each item in the\n\t * second collection there will be one view instance added to this collection.\n\t *\n\t * The process can be automatic:\n\t *\n\t *\t\t// This collection stores items.\n\t *\t\tconst items = new Collection( { idProperty: 'label' } );\n\t *\n\t *\t\t// This view collection will become a factory out of the collection of items.\n\t *\t\tconst views = new ViewCollection( locale );\n\t *\n\t *\t\t// Activate the binding – since now, this view collection works like a **factory**.\n\t *\t\t// Each new item is passed to the FooView constructor like new FooView( locale, item ).\n\t *\t\tviews.bindTo( items ).as( FooView );\n\t *\n\t *\t\t// As new items arrive to the collection, each becomes an instance of FooView\n\t *\t\t// in the view collection.\n\t *\t\titems.add( new Model( { label: 'foo' } ) );\n\t *\t\titems.add( new Model( { label: 'bar' } ) );\n\t *\n\t *\t\tconsole.log( views.length == 2 );\n\t *\n\t *\t\t// View collection is updated as the model is removed.\n\t *\t\titems.remove( 0 );\n\t *\t\tconsole.log( views.length == 1 );\n\t *\n\t * or the factory can be driven by a custom callback:\n\t *\n\t *\t\t// This collection stores any kind of data.\n\t *\t\tconst data = new Collection();\n\t *\n\t *\t\t// This view collection will become a custom factory for the data.\n\t *\t\tconst views = new ViewCollection( locale );\n\t *\n\t *\t\t// Activate the binding – the **factory** is driven by a custom callback.\n\t *\t\tviews.bindTo( data ).as( item => {\n\t *\t\t\tif ( !item.foo ) {\n\t *\t\t\t\treturn null;\n\t *\t\t\t} else if ( item.foo == 'bar' ) {\n\t *\t\t\t\treturn new BarView();\n\t *\t\t\t} else {\n\t *\t\t\t\treturn new DifferentView();\n\t *\t\t\t}\n\t *\t\t} );\n\t *\n\t *\t\t// As new data arrive to the collection, each is handled individually by the callback.\n\t *\t\t// This will produce BarView.\n\t *\t\tdata.add( { foo: 'bar' } );\n\t *\n\t *\t\t// And this one will become DifferentView.\n\t *\t\tdata.add( { foo: 'baz' } );\n\t *\n\t *\t\t// Also there will be no view for data lacking the `foo` property.\n\t *\t\tdata.add( {} );\n\t *\n\t *\t\tconsole.log( controllers.length == 2 );\n\t *\n\t *\t\t// View collection is also updated as the data is removed.\n\t *\t\tdata.remove( 0 );\n\t *\t\tconsole.log( controllers.length == 1 );\n\t *\n\t * @param {module:utils/collection~Collection} collection A collection to be bound.\n\t * @returns {module:ui/viewcollection~ViewCollection#bindTo#as}\n\t */\n\tbindTo( collection ) {\n\t\treturn {\n\t\t\t/**\n\t\t\t * Determines the output view of the binding.\n\t\t\t *\n\t\t\t * @static\n\t\t\t * @param {Function|module:ui/view~View} CallbackOrViewClass Specifies the constructor of the view to be used or\n\t\t\t * a custom callback function which produces views.\n\t\t\t */\n\t\t\tas: ( CallbackOrViewClass ) => {\n\t\t\t\tlet createView;\n\n\t\t\t\tif ( CallbackOrViewClass.prototype instanceof View ) {\n\t\t\t\t\tcreateView = ( item ) => {\n\t\t\t\t\t\tconst viewInstance = new CallbackOrViewClass( this.locale, item );\n\n\t\t\t\t\t\tthis._boundItemsToViewsMap.set( item, viewInstance );\n\n\t\t\t\t\t\treturn viewInstance;\n\t\t\t\t\t};\n\t\t\t\t} else {\n\t\t\t\t\tcreateView = ( item ) => {\n\t\t\t\t\t\tconst viewInstance = CallbackOrViewClass( item );\n\n\t\t\t\t\t\tthis._boundItemsToViewsMap.set( item, viewInstance );\n\n\t\t\t\t\t\treturn viewInstance;\n\t\t\t\t\t};\n\t\t\t\t}\n\n\t\t\t\t// Load the initial content of the collection.\n\t\t\t\tfor ( let item of collection ) {\n\t\t\t\t\tthis.add( createView( item ) );\n\t\t\t\t}\n\n\t\t\t\t// Synchronize views as new items are added to the collection.\n\t\t\t\tthis.listenTo( collection, 'add', ( evt, item, index ) => {\n\t\t\t\t\tthis.add( createView( item ), index );\n\t\t\t\t} );\n\n\t\t\t\t// Synchronize views as items are removed from the collection.\n\t\t\t\tthis.listenTo( collection, 'remove', ( evt, item ) => {\n\t\t\t\t\tthis.remove( this._boundItemsToViewsMap.get( item ) );\n\n\t\t\t\t\tthis._boundItemsToViewsMap.delete( item );\n\t\t\t\t} );\n\t\t\t}\n\t\t};\n\t}\n\n\t/**\n\t * Delegates selected events coming from within the collection to desired {@link module:utils/emittermixin~EmitterMixin}.\n\t *\n\t * For instance:\n\t *\n\t *\t\tconst viewA = new View();\n\t *\t\tconst viewB = new View();\n\t *\t\tconst viewC = new View();\n\t *\n\t *\t\tconst views = parentView.createCollection();\n\t *\n\t *\t\tviews.delegate( 'eventX' ).to( viewB );\n\t *\t\tviews.delegate( 'eventX', 'eventY' ).to( viewC );\n\t *\n\t *\t\tviews.add( viewA );\n\t *\n\t * then `eventX` is delegated (fired by) `viewB` and `viewC` along with `customData`:\n\t *\n\t *\t\tviewA.fire( 'eventX', customData );\n\t *\n\t * and `eventY` is delegated (fired by) `viewC` along with `customData`:\n\t *\n\t *\t\tviewA.fire( 'eventY', customData );\n\t *\n\t * See {@link module:utils/emittermixin~EmitterMixin#delegate}.\n\t *\n\t * @param {...String} events {@link module:ui/view~View} event names to be delegated to another {@link\n\t * module:utils/emittermixin~EmitterMixin}.\n\t * @returns {module:ui/viewcollection~ViewCollection#delegate.to}\n\t */\n\tdelegate( ...events ) {\n\t\tif ( !events.length || !isStringArray( events ) ) {\n\t\t\t/**\n\t\t\t * All event names must be strings.\n\t\t\t *\n\t\t\t * @error ui-viewcollection-delegate-wrong-events\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'ui-viewcollection-delegate-wrong-events: All event names must be strings.' );\n\t\t}\n\n\t\treturn {\n\t\t\t/**\n\t\t\t * Selects destination for {@link module:utils/emittermixin~EmitterMixin#delegate} events.\n\t\t\t *\n\t\t\t * @memberOf module:ui/viewcollection~ViewCollection#delegate\n\t\t\t * @function module:ui/viewcollection~ViewCollection#delegate.to\n\t\t\t * @param {module:utils/emittermixin~EmitterMixin} dest An `EmitterMixin` instance which is the destination for delegated events.\n\t\t\t */\n\t\t\tto: ( dest ) => {\n\t\t\t\t// Activate delegating on existing views in this collection.\n\t\t\t\tfor ( let view of this ) {\n\t\t\t\t\tfor ( let evtName of events ) {\n\t\t\t\t\t\tview.delegate( evtName ).to( dest );\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\t// Activate delegating on future views in this collection.\n\t\t\t\tthis.on( 'add', ( evt, view ) => {\n\t\t\t\t\tfor ( let evtName of events ) {\n\t\t\t\t\t\tview.delegate( evtName ).to( dest );\n\t\t\t\t\t}\n\t\t\t\t} );\n\n\t\t\t\t// Deactivate delegating when view is removed from this collection.\n\t\t\t\tthis.on( 'remove', ( evt, view ) => {\n\t\t\t\t\tfor ( let evtName of events ) {\n\t\t\t\t\t\tview.stopDelegating( evtName, dest );\n\t\t\t\t\t}\n\t\t\t\t} );\n\t\t\t}\n\t\t};\n\t}\n}\n\nmix( Collection, ObservableMixin );\n\n// Check if all entries of the array are of `String` type.\n//\n// @private\n// @param {Array} arr An array to be checked.\n// @returns {Boolean}\nfunction isStringArray( arr ) {\n\treturn arr.every( a => typeof a == 'string' );\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-ui/src/viewcollection.js","import mapCacheClear from './_mapCacheClear';\nimport mapCacheDelete from './_mapCacheDelete';\nimport mapCacheGet from './_mapCacheGet';\nimport mapCacheHas from './_mapCacheHas';\nimport mapCacheSet from './_mapCacheSet';\n\n/**\n * Creates a map cache object to store key-value pairs.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\nfunction MapCache(entries) {\n  var index = -1,\n      length = entries ? entries.length : 0;\n\n  this.clear();\n  while (++index < length) {\n    var entry = entries[index];\n    this.set(entry[0], entry[1]);\n  }\n}\n\n// Add methods to `MapCache`.\nMapCache.prototype.clear = mapCacheClear;\nMapCache.prototype['delete'] = mapCacheDelete;\nMapCache.prototype.get = mapCacheGet;\nMapCache.prototype.has = mapCacheHas;\nMapCache.prototype.set = mapCacheSet;\n\nexport default MapCache;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_MapCache.js","import ListCache from './_ListCache';\nimport stackClear from './_stackClear';\nimport stackDelete from './_stackDelete';\nimport stackGet from './_stackGet';\nimport stackHas from './_stackHas';\nimport stackSet from './_stackSet';\n\n/**\n * Creates a stack cache object to store key-value pairs.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\nfunction Stack(entries) {\n  this.__data__ = new ListCache(entries);\n}\n\n// Add methods to `Stack`.\nStack.prototype.clear = stackClear;\nStack.prototype['delete'] = stackDelete;\nStack.prototype.get = stackGet;\nStack.prototype.has = stackHas;\nStack.prototype.set = stackSet;\n\nexport default Stack;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_Stack.js","import root from './_root';\n\n/** Built-in value references. */\nvar Symbol = root.Symbol;\n\nexport default Symbol;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_Symbol.js","import baseIndexOf from './_baseIndexOf';\n\n/**\n * A specialized version of `_.includes` for arrays without support for\n * specifying an index to search from.\n *\n * @private\n * @param {Array} array The array to search.\n * @param {*} target The value to search for.\n * @returns {boolean} Returns `true` if `target` is found, else `false`.\n */\nfunction arrayIncludes(array, value) {\n  return !!array.length && baseIndexOf(array, value, 0) > -1;\n}\n\nexport default arrayIncludes;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_arrayIncludes.js","/**\n * This function is like `arrayIncludes` except that it accepts a comparator.\n *\n * @private\n * @param {Array} array The array to search.\n * @param {*} target The value to search for.\n * @param {Function} comparator The comparator invoked per element.\n * @returns {boolean} Returns `true` if `target` is found, else `false`.\n */\nfunction arrayIncludesWith(array, value, comparator) {\n  var index = -1,\n      length = array.length;\n\n  while (++index < length) {\n    if (comparator(value, array[index])) {\n      return true;\n    }\n  }\n  return false;\n}\n\nexport default arrayIncludesWith;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_arrayIncludesWith.js","import castPath from './_castPath';\nimport isKey from './_isKey';\nimport toKey from './_toKey';\n\n/**\n * The base implementation of `_.get` without support for default values.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array|string} path The path of the property to get.\n * @returns {*} Returns the resolved value.\n */\nfunction baseGet(object, path) {\n  path = isKey(path, object) ? [path] : castPath(path);\n\n  var index = 0,\n      length = path.length;\n\n  while (object != null && index < length) {\n    object = object[toKey(path[index++])];\n  }\n  return (index && index == length) ? object : undefined;\n}\n\nexport default baseGet;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_baseGet.js","import indexOfNaN from './_indexOfNaN';\n\n/**\n * The base implementation of `_.indexOf` without `fromIndex` bounds checks.\n *\n * @private\n * @param {Array} array The array to search.\n * @param {*} value The value to search for.\n * @param {number} fromIndex The index to search from.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\nfunction baseIndexOf(array, value, fromIndex) {\n  if (value !== value) {\n    return indexOfNaN(array, fromIndex);\n  }\n  var index = fromIndex - 1,\n      length = array.length;\n\n  while (++index < length) {\n    if (array[index] === value) {\n      return index;\n    }\n  }\n  return -1;\n}\n\nexport default baseIndexOf;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_baseIndexOf.js","import SetCache from './_SetCache';\nimport arrayIncludes from './_arrayIncludes';\nimport arrayIncludesWith from './_arrayIncludesWith';\nimport arrayMap from './_arrayMap';\nimport baseUnary from './_baseUnary';\nimport cacheHas from './_cacheHas';\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeMin = Math.min;\n\n/**\n * The base implementation of methods like `_.intersection`, without support\n * for iteratee shorthands, that accepts an array of arrays to inspect.\n *\n * @private\n * @param {Array} arrays The arrays to inspect.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of shared values.\n */\nfunction baseIntersection(arrays, iteratee, comparator) {\n  var includes = comparator ? arrayIncludesWith : arrayIncludes,\n      length = arrays[0].length,\n      othLength = arrays.length,\n      othIndex = othLength,\n      caches = Array(othLength),\n      maxLength = Infinity,\n      result = [];\n\n  while (othIndex--) {\n    var array = arrays[othIndex];\n    if (othIndex && iteratee) {\n      array = arrayMap(array, baseUnary(iteratee));\n    }\n    maxLength = nativeMin(array.length, maxLength);\n    caches[othIndex] = !comparator && (iteratee || (length >= 120 && array.length >= 120))\n      ? new SetCache(othIndex && array)\n      : undefined;\n  }\n  array = arrays[0];\n\n  var index = -1,\n      seen = caches[0];\n\n  outer:\n  while (++index < length && result.length < maxLength) {\n    var value = array[index],\n        computed = iteratee ? iteratee(value) : value;\n\n    value = (comparator || value !== 0) ? value : 0;\n    if (!(seen\n          ? cacheHas(seen, computed)\n          : includes(result, computed, comparator)\n        )) {\n      othIndex = othLength;\n      while (--othIndex) {\n        var cache = caches[othIndex];\n        if (!(cache\n              ? cacheHas(cache, computed)\n              : includes(arrays[othIndex], computed, comparator))\n            ) {\n          continue outer;\n        }\n      }\n      if (seen) {\n        seen.push(computed);\n      }\n      result.push(value);\n    }\n  }\n  return result;\n}\n\nexport default baseIntersection;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_baseIntersection.js","import baseIsEqualDeep from './_baseIsEqualDeep';\nimport isObject from './isObject';\nimport isObjectLike from './isObjectLike';\n\n/**\n * The base implementation of `_.isEqual` which supports partial comparisons\n * and tracks traversed objects.\n *\n * @private\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @param {Function} [customizer] The function to customize comparisons.\n * @param {boolean} [bitmask] The bitmask of comparison flags.\n *  The bitmask may be composed of the following flags:\n *     1 - Unordered comparison\n *     2 - Partial comparison\n * @param {Object} [stack] Tracks traversed `value` and `other` objects.\n * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n */\nfunction baseIsEqual(value, other, customizer, bitmask, stack) {\n  if (value === other) {\n    return true;\n  }\n  if (value == null || other == null || (!isObject(value) && !isObjectLike(other))) {\n    return value !== value && other !== other;\n  }\n  return baseIsEqualDeep(value, other, baseIsEqual, customizer, bitmask, stack);\n}\n\nexport default baseIsEqual;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_baseIsEqual.js","/**\n * The base implementation of `_.property` without support for deep paths.\n *\n * @private\n * @param {string} key The key of the property to get.\n * @returns {Function} Returns the new accessor function.\n */\nfunction baseProperty(key) {\n  return function(object) {\n    return object == null ? undefined : object[key];\n  };\n}\n\nexport default baseProperty;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_baseProperty.js","import arrayMap from './_arrayMap';\nimport baseIndexOf from './_baseIndexOf';\nimport baseIndexOfWith from './_baseIndexOfWith';\nimport baseUnary from './_baseUnary';\n\n/** Used for built-in method references. */\nvar arrayProto = Array.prototype;\n\n/** Built-in value references. */\nvar splice = arrayProto.splice;\n\n/**\n * The base implementation of `_.pullAllBy` without support for iteratee\n * shorthands.\n *\n * @private\n * @param {Array} array The array to modify.\n * @param {Array} values The values to remove.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns `array`.\n */\nfunction basePullAll(array, values, iteratee, comparator) {\n  var indexOf = comparator ? baseIndexOfWith : baseIndexOf,\n      index = -1,\n      length = values.length,\n      seen = array;\n\n  if (iteratee) {\n    seen = arrayMap(array, baseUnary(iteratee));\n  }\n  while (++index < length) {\n    var fromIndex = 0,\n        value = values[index],\n        computed = iteratee ? iteratee(value) : value;\n\n    while ((fromIndex = indexOf(seen, computed, fromIndex, comparator)) > -1) {\n      if (seen !== array) {\n        splice.call(seen, fromIndex, 1);\n      }\n      splice.call(array, fromIndex, 1);\n    }\n  }\n  return array;\n}\n\nexport default basePullAll;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_basePullAll.js","import isSymbol from './isSymbol';\n\n/** Used as references for the maximum length and index of an array. */\nvar MAX_ARRAY_LENGTH = 4294967295,\n    MAX_ARRAY_INDEX = MAX_ARRAY_LENGTH - 1;\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeFloor = Math.floor,\n    nativeMin = Math.min;\n\n/**\n * The base implementation of `_.sortedIndexBy` and `_.sortedLastIndexBy`\n * which invokes `iteratee` for `value` and each element of `array` to compute\n * their sort ranking. The iteratee is invoked with one argument; (value).\n *\n * @private\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @param {Function} iteratee The iteratee invoked per element.\n * @param {boolean} [retHighest] Specify returning the highest qualified index.\n * @returns {number} Returns the index at which `value` should be inserted\n *  into `array`.\n */\nfunction baseSortedIndexBy(array, value, iteratee, retHighest) {\n  value = iteratee(value);\n\n  var low = 0,\n      high = array ? array.length : 0,\n      valIsNaN = value !== value,\n      valIsNull = value === null,\n      valIsSymbol = isSymbol(value),\n      valIsUndefined = value === undefined;\n\n  while (low < high) {\n    var mid = nativeFloor((low + high) / 2),\n        computed = iteratee(array[mid]),\n        othIsDefined = computed !== undefined,\n        othIsNull = computed === null,\n        othIsReflexive = computed === computed,\n        othIsSymbol = isSymbol(computed);\n\n    if (valIsNaN) {\n      var setLow = retHighest || othIsReflexive;\n    } else if (valIsUndefined) {\n      setLow = othIsReflexive && (retHighest || othIsDefined);\n    } else if (valIsNull) {\n      setLow = othIsReflexive && othIsDefined && (retHighest || !othIsNull);\n    } else if (valIsSymbol) {\n      setLow = othIsReflexive && othIsDefined && !othIsNull && (retHighest || !othIsSymbol);\n    } else if (othIsNull || othIsSymbol) {\n      setLow = false;\n    } else {\n      setLow = retHighest ? (computed <= value) : (computed < value);\n    }\n    if (setLow) {\n      low = mid + 1;\n    } else {\n      high = mid;\n    }\n  }\n  return nativeMin(high, MAX_ARRAY_INDEX);\n}\n\nexport default baseSortedIndexBy;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_baseSortedIndexBy.js","/**\n * The base implementation of `_.unary` without support for storing wrapper metadata.\n *\n * @private\n * @param {Function} func The function to cap arguments for.\n * @returns {Function} Returns the new capped function.\n */\nfunction baseUnary(func) {\n  return function(value) {\n    return func(value);\n  };\n}\n\nexport default baseUnary;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_baseUnary.js","import arrayPush from './_arrayPush';\nimport baseDifference from './_baseDifference';\nimport baseUniq from './_baseUniq';\n\n/**\n * The base implementation of methods like `_.xor`, without support for\n * iteratee shorthands, that accepts an array of arrays to inspect.\n *\n * @private\n * @param {Array} arrays The arrays to inspect.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of values.\n */\nfunction baseXor(arrays, iteratee, comparator) {\n  var index = -1,\n      length = arrays.length;\n\n  while (++index < length) {\n    var result = result\n      ? arrayPush(\n          baseDifference(result, arrays[index], iteratee, comparator),\n          baseDifference(arrays[index], result, iteratee, comparator)\n        )\n      : arrays[index];\n  }\n  return (result && result.length) ? baseUniq(result, iteratee, comparator) : [];\n}\n\nexport default baseXor;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_baseXor.js","/**\n * Checks if a cache value for `key` exists.\n *\n * @private\n * @param {Object} cache The cache to query.\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\nfunction cacheHas(cache, key) {\n  return cache.has(key);\n}\n\nexport default cacheHas;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_cacheHas.js","import isArrayLikeObject from './isArrayLikeObject';\n\n/**\n * Casts `value` to an empty array if it's not an array like object.\n *\n * @private\n * @param {*} value The value to inspect.\n * @returns {Array|Object} Returns the cast array-like object.\n */\nfunction castArrayLikeObject(value) {\n  return isArrayLikeObject(value) ? value : [];\n}\n\nexport default castArrayLikeObject;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_castArrayLikeObject.js","import Uint8Array from './_Uint8Array';\n\n/**\n * Creates a clone of `arrayBuffer`.\n *\n * @private\n * @param {ArrayBuffer} arrayBuffer The array buffer to clone.\n * @returns {ArrayBuffer} Returns the cloned array buffer.\n */\nfunction cloneArrayBuffer(arrayBuffer) {\n  var result = new arrayBuffer.constructor(arrayBuffer.byteLength);\n  new Uint8Array(result).set(new Uint8Array(arrayBuffer));\n  return result;\n}\n\nexport default cloneArrayBuffer;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_cloneArrayBuffer.js","import assignValue from './_assignValue';\n\n/**\n * Copies properties of `source` to `object`.\n *\n * @private\n * @param {Object} source The object to copy properties from.\n * @param {Array} props The property identifiers to copy.\n * @param {Object} [object={}] The object to copy properties to.\n * @param {Function} [customizer] The function to customize copied values.\n * @returns {Object} Returns `object`.\n */\nfunction copyObject(source, props, object, customizer) {\n  object || (object = {});\n\n  var index = -1,\n      length = props.length;\n\n  while (++index < length) {\n    var key = props[index];\n\n    var newValue = customizer\n      ? customizer(object[key], source[key], key, object, source)\n      : source[key];\n\n    assignValue(object, key, newValue);\n  }\n  return object;\n}\n\nexport default copyObject;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_copyObject.js","/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeGetPrototype = Object.getPrototypeOf;\n\n/**\n * Gets the `[[Prototype]]` of `value`.\n *\n * @private\n * @param {*} value The value to query.\n * @returns {null|Object} Returns the `[[Prototype]]`.\n */\nfunction getPrototype(value) {\n  return nativeGetPrototype(Object(value));\n}\n\nexport default getPrototype;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_getPrototype.js","import DataView from './_DataView';\nimport Map from './_Map';\nimport Promise from './_Promise';\nimport Set from './_Set';\nimport WeakMap from './_WeakMap';\nimport toSource from './_toSource';\n\n/** `Object#toString` result references. */\nvar mapTag = '[object Map]',\n    objectTag = '[object Object]',\n    promiseTag = '[object Promise]',\n    setTag = '[object Set]',\n    weakMapTag = '[object WeakMap]';\n\nvar dataViewTag = '[object DataView]';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/**\n * Used to resolve the\n * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)\n * of values.\n */\nvar objectToString = objectProto.toString;\n\n/** Used to detect maps, sets, and weakmaps. */\nvar dataViewCtorString = toSource(DataView),\n    mapCtorString = toSource(Map),\n    promiseCtorString = toSource(Promise),\n    setCtorString = toSource(Set),\n    weakMapCtorString = toSource(WeakMap);\n\n/**\n * Gets the `toStringTag` of `value`.\n *\n * @private\n * @param {*} value The value to query.\n * @returns {string} Returns the `toStringTag`.\n */\nfunction getTag(value) {\n  return objectToString.call(value);\n}\n\n// Fallback for data views, maps, sets, and weak maps in IE 11,\n// for data views in Edge, and promises in Node.js.\nif ((DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag) ||\n    (Map && getTag(new Map) != mapTag) ||\n    (Promise && getTag(Promise.resolve()) != promiseTag) ||\n    (Set && getTag(new Set) != setTag) ||\n    (WeakMap && getTag(new WeakMap) != weakMapTag)) {\n  getTag = function(value) {\n    var result = objectToString.call(value),\n        Ctor = result == objectTag ? value.constructor : undefined,\n        ctorString = Ctor ? toSource(Ctor) : undefined;\n\n    if (ctorString) {\n      switch (ctorString) {\n        case dataViewCtorString: return dataViewTag;\n        case mapCtorString: return mapTag;\n        case promiseCtorString: return promiseTag;\n        case setCtorString: return setTag;\n        case weakMapCtorString: return weakMapTag;\n      }\n    }\n    return result;\n  };\n}\n\nexport default getTag;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_getTag.js","/**\n * Converts `map` to its key-value pairs.\n *\n * @private\n * @param {Object} map The map to convert.\n * @returns {Array} Returns the key-value pairs.\n */\nfunction mapToArray(map) {\n  var index = -1,\n      result = Array(map.size);\n\n  map.forEach(function(value, key) {\n    result[++index] = [key, value];\n  });\n  return result;\n}\n\nexport default mapToArray;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_mapToArray.js","import isObject from './isObject';\nimport now from './now';\nimport toNumber from './toNumber';\n\n/** Used as the `TypeError` message for \"Functions\" methods. */\nvar FUNC_ERROR_TEXT = 'Expected a function';\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeMax = Math.max,\n    nativeMin = Math.min;\n\n/**\n * Creates a debounced function that delays invoking `func` until after `wait`\n * milliseconds have elapsed since the last time the debounced function was\n * invoked. The debounced function comes with a `cancel` method to cancel\n * delayed `func` invocations and a `flush` method to immediately invoke them.\n * Provide an options object to indicate whether `func` should be invoked on\n * the leading and/or trailing edge of the `wait` timeout. The `func` is invoked\n * with the last arguments provided to the debounced function. Subsequent calls\n * to the debounced function return the result of the last `func` invocation.\n *\n * **Note:** If `leading` and `trailing` options are `true`, `func` is invoked\n * on the trailing edge of the timeout only if the debounced function is\n * invoked more than once during the `wait` timeout.\n *\n * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)\n * for details over the differences between `_.debounce` and `_.throttle`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to debounce.\n * @param {number} [wait=0] The number of milliseconds to delay.\n * @param {Object} [options={}] The options object.\n * @param {boolean} [options.leading=false]\n *  Specify invoking on the leading edge of the timeout.\n * @param {number} [options.maxWait]\n *  The maximum time `func` is allowed to be delayed before it's invoked.\n * @param {boolean} [options.trailing=true]\n *  Specify invoking on the trailing edge of the timeout.\n * @returns {Function} Returns the new debounced function.\n * @example\n *\n * // Avoid costly calculations while the window size is in flux.\n * jQuery(window).on('resize', _.debounce(calculateLayout, 150));\n *\n * // Invoke `sendMail` when clicked, debouncing subsequent calls.\n * jQuery(element).on('click', _.debounce(sendMail, 300, {\n *   'leading': true,\n *   'trailing': false\n * }));\n *\n * // Ensure `batchLog` is invoked once after 1 second of debounced calls.\n * var debounced = _.debounce(batchLog, 250, { 'maxWait': 1000 });\n * var source = new EventSource('/stream');\n * jQuery(source).on('message', debounced);\n *\n * // Cancel the trailing debounced invocation.\n * jQuery(window).on('popstate', debounced.cancel);\n */\nfunction debounce(func, wait, options) {\n  var lastArgs,\n      lastThis,\n      maxWait,\n      result,\n      timerId,\n      lastCallTime = 0,\n      lastInvokeTime = 0,\n      leading = false,\n      maxing = false,\n      trailing = true;\n\n  if (typeof func != 'function') {\n    throw new TypeError(FUNC_ERROR_TEXT);\n  }\n  wait = toNumber(wait) || 0;\n  if (isObject(options)) {\n    leading = !!options.leading;\n    maxing = 'maxWait' in options;\n    maxWait = maxing ? nativeMax(toNumber(options.maxWait) || 0, wait) : maxWait;\n    trailing = 'trailing' in options ? !!options.trailing : trailing;\n  }\n\n  function invokeFunc(time) {\n    var args = lastArgs,\n        thisArg = lastThis;\n\n    lastArgs = lastThis = undefined;\n    lastInvokeTime = time;\n    result = func.apply(thisArg, args);\n    return result;\n  }\n\n  function leadingEdge(time) {\n    // Reset any `maxWait` timer.\n    lastInvokeTime = time;\n    // Start the timer for the trailing edge.\n    timerId = setTimeout(timerExpired, wait);\n    // Invoke the leading edge.\n    return leading ? invokeFunc(time) : result;\n  }\n\n  function remainingWait(time) {\n    var timeSinceLastCall = time - lastCallTime,\n        timeSinceLastInvoke = time - lastInvokeTime,\n        result = wait - timeSinceLastCall;\n\n    return maxing ? nativeMin(result, maxWait - timeSinceLastInvoke) : result;\n  }\n\n  function shouldInvoke(time) {\n    var timeSinceLastCall = time - lastCallTime,\n        timeSinceLastInvoke = time - lastInvokeTime;\n\n    // Either this is the first call, activity has stopped and we're at the\n    // trailing edge, the system time has gone backwards and we're treating\n    // it as the trailing edge, or we've hit the `maxWait` limit.\n    return (!lastCallTime || (timeSinceLastCall >= wait) ||\n      (timeSinceLastCall < 0) || (maxing && timeSinceLastInvoke >= maxWait));\n  }\n\n  function timerExpired() {\n    var time = now();\n    if (shouldInvoke(time)) {\n      return trailingEdge(time);\n    }\n    // Restart the timer.\n    timerId = setTimeout(timerExpired, remainingWait(time));\n  }\n\n  function trailingEdge(time) {\n    clearTimeout(timerId);\n    timerId = undefined;\n\n    // Only invoke if we have `lastArgs` which means `func` has been\n    // debounced at least once.\n    if (trailing && lastArgs) {\n      return invokeFunc(time);\n    }\n    lastArgs = lastThis = undefined;\n    return result;\n  }\n\n  function cancel() {\n    if (timerId !== undefined) {\n      clearTimeout(timerId);\n    }\n    lastCallTime = lastInvokeTime = 0;\n    lastArgs = lastThis = timerId = undefined;\n  }\n\n  function flush() {\n    return timerId === undefined ? result : trailingEdge(now());\n  }\n\n  function debounced() {\n    var time = now(),\n        isInvoking = shouldInvoke(time);\n\n    lastArgs = arguments;\n    lastThis = this;\n    lastCallTime = time;\n\n    if (isInvoking) {\n      if (timerId === undefined) {\n        return leadingEdge(lastCallTime);\n      }\n      if (maxing) {\n        // Handle invocations in a tight loop.\n        clearTimeout(timerId);\n        timerId = setTimeout(timerExpired, wait);\n        return invokeFunc(lastCallTime);\n      }\n    }\n    if (timerId === undefined) {\n      timerId = setTimeout(timerExpired, wait);\n    }\n    return result;\n  }\n  debounced.cancel = cancel;\n  debounced.flush = flush;\n  return debounced;\n}\n\nexport default debounce;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/debounce.js","import baseSlice from './_baseSlice';\nimport toInteger from './toInteger';\n\n/**\n * Creates a slice of `array` with `n` elements dropped from the beginning.\n *\n * @static\n * @memberOf _\n * @since 0.5.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {number} [n=1] The number of elements to drop.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.drop([1, 2, 3]);\n * // => [2, 3]\n *\n * _.drop([1, 2, 3], 2);\n * // => [3]\n *\n * _.drop([1, 2, 3], 5);\n * // => []\n *\n * _.drop([1, 2, 3], 0);\n * // => [1, 2, 3]\n */\nfunction drop(array, n, guard) {\n  var length = array ? array.length : 0;\n  if (!length) {\n    return [];\n  }\n  n = (guard || n === undefined) ? 1 : toInteger(n);\n  return baseSlice(array, n < 0 ? 0 : n, length);\n}\n\nexport default drop;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/drop.js","import baseSlice from './_baseSlice';\nimport toInteger from './toInteger';\n\n/**\n * Creates a slice of `array` with `n` elements dropped from the end.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {number} [n=1] The number of elements to drop.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.dropRight([1, 2, 3]);\n * // => [1, 2]\n *\n * _.dropRight([1, 2, 3], 2);\n * // => [1]\n *\n * _.dropRight([1, 2, 3], 5);\n * // => []\n *\n * _.dropRight([1, 2, 3], 0);\n * // => [1, 2, 3]\n */\nfunction dropRight(array, n, guard) {\n  var length = array ? array.length : 0;\n  if (!length) {\n    return [];\n  }\n  n = (guard || n === undefined) ? 1 : toInteger(n);\n  n = length - n;\n  return baseSlice(array, 0, n < 0 ? 0 : n);\n}\n\nexport default dropRight;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/dropRight.js","/**\n * Gets the first element of `array`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @alias first\n * @category Array\n * @param {Array} array The array to query.\n * @returns {*} Returns the first element of `array`.\n * @example\n *\n * _.head([1, 2, 3]);\n * // => 1\n *\n * _.head([]);\n * // => undefined\n */\nfunction head(array) {\n  return (array && array.length) ? array[0] : undefined;\n}\n\nexport default head;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/head.js","import isArrayLikeObject from './isArrayLikeObject';\n\n/** `Object#toString` result references. */\nvar argsTag = '[object Arguments]';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/**\n * Used to resolve the\n * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)\n * of values.\n */\nvar objectToString = objectProto.toString;\n\n/** Built-in value references. */\nvar propertyIsEnumerable = objectProto.propertyIsEnumerable;\n\n/**\n * Checks if `value` is likely an `arguments` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is correctly classified,\n *  else `false`.\n * @example\n *\n * _.isArguments(function() { return arguments; }());\n * // => true\n *\n * _.isArguments([1, 2, 3]);\n * // => false\n */\nfunction isArguments(value) {\n  // Safari 8.1 incorrectly makes `arguments.callee` enumerable in strict mode.\n  return isArrayLikeObject(value) && hasOwnProperty.call(value, 'callee') &&\n    (!propertyIsEnumerable.call(value, 'callee') || objectToString.call(value) == argsTag);\n}\n\nexport default isArguments;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/isArguments.js","import isObject from './isObject';\n\n/** `Object#toString` result references. */\nvar funcTag = '[object Function]',\n    genTag = '[object GeneratorFunction]';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/**\n * Used to resolve the\n * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)\n * of values.\n */\nvar objectToString = objectProto.toString;\n\n/**\n * Checks if `value` is classified as a `Function` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is correctly classified,\n *  else `false`.\n * @example\n *\n * _.isFunction(_);\n * // => true\n *\n * _.isFunction(/abc/);\n * // => false\n */\nfunction isFunction(value) {\n  // The use of `Object#toString` avoids issues with the `typeof` operator\n  // in Safari 8 which returns 'object' for typed array and weak map constructors,\n  // and PhantomJS 1.9 which returns 'function' for `NodeList` instances.\n  var tag = isObject(value) ? objectToString.call(value) : '';\n  return tag == funcTag || tag == genTag;\n}\n\nexport default isFunction;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/isFunction.js","import isArray from './isArray';\nimport isObjectLike from './isObjectLike';\n\n/** `Object#toString` result references. */\nvar stringTag = '[object String]';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/**\n * Used to resolve the\n * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)\n * of values.\n */\nvar objectToString = objectProto.toString;\n\n/**\n * Checks if `value` is classified as a `String` primitive or object.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is correctly classified,\n *  else `false`.\n * @example\n *\n * _.isString('abc');\n * // => true\n *\n * _.isString(1);\n * // => false\n */\nfunction isString(value) {\n  return typeof value == 'string' ||\n    (!isArray(value) && isObjectLike(value) && objectToString.call(value) == stringTag);\n}\n\nexport default isString;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/isString.js","import basePullAll from './_basePullAll';\n\n/**\n * This method is like `_.pull` except that it accepts an array of values to remove.\n *\n * **Note:** Unlike `_.difference`, this method mutates `array`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {Array} values The values to remove.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = [1, 2, 3, 1, 2, 3];\n *\n * _.pullAll(array, [2, 3]);\n * console.log(array);\n * // => [1, 1]\n */\nfunction pullAll(array, values) {\n  return (array && array.length && values && values.length)\n    ? basePullAll(array, values)\n    : array;\n}\n\nexport default pullAll;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/pullAll.js","import apply from './_apply';\nimport arrayMap from './_arrayMap';\nimport unzip from './unzip';\n\n/**\n * This method is like `_.unzip` except that it accepts `iteratee` to specify\n * how regrouped values should be combined. The iteratee is invoked with the\n * elements of each group: (...group).\n *\n * @static\n * @memberOf _\n * @since 3.8.0\n * @category Array\n * @param {Array} array The array of grouped elements to process.\n * @param {Function} [iteratee=_.identity] The function to combine\n *  regrouped values.\n * @returns {Array} Returns the new array of regrouped elements.\n * @example\n *\n * var zipped = _.zip([1, 2], [10, 20], [100, 200]);\n * // => [[1, 10, 100], [2, 20, 200]]\n *\n * _.unzipWith(zipped, _.add);\n * // => [3, 30, 300]\n */\nfunction unzipWith(array, iteratee) {\n  if (!(array && array.length)) {\n    return [];\n  }\n  var result = unzip(array);\n  if (iteratee == null) {\n    return result;\n  }\n  return arrayMap(result, function(group) {\n    return apply(iteratee, undefined, group);\n  });\n}\n\nexport default unzipWith;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/unzipWith.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/tomap\n */\n\nimport isPlainObject from './lib/lodash/isPlainObject';\nimport objectToMap from './objecttomap';\n\n/**\n * Transforms object or iterable to map. Iterable needs to be in the format acceptable by the `Map` constructor.\n *\n *\t\tmap = toMap( { 'foo': 1, 'bar': 2 } );\n *\t\tmap = toMap( [ [ 'foo', 1 ], [ 'bar', 2 ] ] );\n *\t\tmap = toMap( anotherMap );\n *\n * @param {Object|Iterable} data Object or iterable to transform.\n * @returns {Map} Map created from data.\n */\nexport default function toMap( data ) {\n\tif ( isPlainObject( data ) ) {\n\t\treturn objectToMap( data );\n\t} else {\n\t\treturn new Map( data );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/tomap.js","var g;\r\n\r\n// This works in non-strict mode\r\ng = (function() {\r\n\treturn this;\r\n})();\r\n\r\ntry {\r\n\t// This works if eval is allowed (see CSP)\r\n\tg = g || Function(\"return this\")() || (1,eval)(\"this\");\r\n} catch(e) {\r\n\t// This works if the window reference is available\r\n\tif(typeof window === \"object\")\r\n\t\tg = window;\r\n}\r\n\r\n// g can still be undefined, but nothing to do about it...\r\n// We return undefined, instead of nothing here, so it's\r\n// easier to handle this case. if(!global) { ...}\r\n\r\nmodule.exports = g;\r\n\n\n\n// WEBPACK FOOTER //\n// (webpack)/buildin/global.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module basic-styles/boldengine\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport buildModelConverter from '@ckeditor/ckeditor5-engine/src/conversion/buildmodelconverter';\nimport buildViewConverter from '@ckeditor/ckeditor5-engine/src/conversion/buildviewconverter';\nimport ToggleAttributeCommand from '@ckeditor/ckeditor5-core/src/command/toggleattributecommand';\n\nconst BOLD = 'bold';\n\n/**\n * The bold engine feature.\n *\n * It registers the `bold` command and introduces the `bold` attribute in the model which renders to the view\n * as a `<strong>` element.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class BoldEngine extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tconst editor = this.editor;\n\t\tconst data = editor.data;\n\t\tconst editing = editor.editing;\n\n\t\t// Allow bold attribute on all inline nodes.\n\t\teditor.document.schema.allow( { name: '$inline', attributes: [ BOLD ] } );\n\n\t\t// Build converter from model to view for data and editing pipelines.\n\t\tbuildModelConverter().for( data.modelToView, editing.modelToView )\n\t\t\t.fromAttribute( BOLD )\n\t\t\t.toElement( 'strong' );\n\n\t\t// Build converter from view to model for data pipeline.\n\t\tbuildViewConverter().for( data.viewToModel )\n\t\t\t.fromElement( 'strong' )\n\t\t\t.fromElement( 'b' )\n\t\t\t.fromAttribute( 'style', { 'font-weight': 'bold' } )\n\t\t\t.toAttribute( BOLD, true );\n\n\t\t// Create bold command.\n\t\teditor.commands.set( BOLD, new ToggleAttributeCommand( editor, BOLD ) );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-basic-styles/src/boldengine.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module basic-styles/italicengine\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport buildModelConverter from '@ckeditor/ckeditor5-engine/src/conversion/buildmodelconverter';\nimport buildViewConverter from '@ckeditor/ckeditor5-engine/src/conversion/buildviewconverter';\nimport ToggleAttributeCommand from '@ckeditor/ckeditor5-core/src/command/toggleattributecommand';\n\nconst ITALIC = 'italic';\n\n/**\n * The italic engine feature.\n *\n * It registers the `italic` command and introduces the `italic` attribute in the model which renders to the view\n * as an `<em>` element.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class ItalicEngine extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tconst editor = this.editor;\n\t\tconst data = editor.data;\n\t\tconst editing = editor.editing;\n\n\t\t// Allow italic attribute on all inline nodes.\n\t\teditor.document.schema.allow( { name: '$inline', attributes: [ ITALIC ] } );\n\n\t\t// Build converter from model to view for data and editing pipelines.\n\t\tbuildModelConverter().for( data.modelToView, editing.modelToView )\n\t\t\t.fromAttribute( ITALIC )\n\t\t\t.toElement( 'em' );\n\n\t\t// Build converter from view to model for data pipeline.\n\t\tbuildViewConverter().for( data.viewToModel )\n\t\t\t.fromElement( 'em' )\n\t\t\t.fromElement( 'i' )\n\t\t\t.fromAttribute( 'style', { 'font-style': 'italic' } )\n\t\t\t.toAttribute( ITALIC, true );\n\n\t\t// Create italic command.\n\t\teditor.commands.set( ITALIC, new ToggleAttributeCommand( editor, ITALIC ) );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-basic-styles/src/italicengine.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module core/command/helpers/isattributeallowedinselection\n */\n\nimport TreeWalker from '@ckeditor/ckeditor5-engine/src/model/treewalker';\n\n/**\n * Checks {@link module:engine/model/document~Document#schema} if attribute is allowed in selection:\n *\n * * if selection is on range, the command is enabled if any of nodes in that range can have bold,\n * * if selection is collapsed, the command is enabled if text with bold is allowed in that node.\n *\n * @param {String} attribute Attribute key.\n * @param {module:engine/model/selection~Selection} selection Selection which ranges will be validate.\n * @param {module:engine/model/schema~Schema} schema Document schema.\n * @returns {Boolean}\n */\nexport default function isAttributeAllowedInSelection( attribute, selection, schema ) {\n\tif ( selection.isCollapsed ) {\n\t\t// Check whether schema allows for a test with `attributeKey` in caret position.\n\t\treturn schema.check( { name: '$text', inside: selection.getFirstPosition(), attributes: attribute } );\n\t} else {\n\t\tconst ranges = selection.getRanges();\n\n\t\t// For all ranges, check nodes in them until you find a node that is allowed to have `attributeKey` attribute.\n\t\tfor ( let range of ranges ) {\n\t\t\tconst walker = new TreeWalker( { boundaries: range, mergeCharacters: true } );\n\t\t\tlet last = walker.position;\n\t\t\tlet step = walker.next();\n\n\t\t\t// Walk the range.\n\t\t\twhile ( !step.done ) {\n\t\t\t\t// If returned item does not have name property, it is a model.TextFragment.\n\t\t\t\tconst name = step.value.item.name || '$text';\n\n\t\t\t\tif ( schema.check( { name: name, inside: last, attributes: attribute } ) ) {\n\t\t\t\t\t// If we found a node that is allowed to have the attribute, return true.\n\t\t\t\t\treturn true;\n\t\t\t\t}\n\n\t\t\t\tlast = walker.position;\n\t\t\t\tstep = walker.next();\n\t\t\t}\n\t\t}\n\t}\n\n\t// If we haven't found such node, return false.\n\treturn false;\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-core/src/command/helpers/isattributeallowedinselection.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module core/command/toggleattributecommand\n */\n\nimport Command from './command';\nimport getSchemaValidRanges from './helpers/getschemavalidranges';\nimport isAttributeAllowedInSelection from './helpers/isattributeallowedinselection';\n\n/**\n * An extension of the base {@link module:core/command/command~Command} class, which provides utilities for a command which toggles a single\n * attribute on a text or an element. `ToggleAttributeCommand` uses {@link module:engine/model/document~Document#selection}\n * to decide which nodes (if any) should be changed, and applies or removes attributes from them.\n *\n * The command checks {@link module:engine/model/document~Document#schema} to decide if it should be enabled.\n */\nexport default class ToggleAttributeCommand extends Command {\n\t/**\n\t * @see module:core/command/command~Command\n\t * @param {module:core/editor/editor~Editor} editor\n\t * @param {String} attributeKey Attribute that will be set by the command.\n\t */\n\tconstructor( editor, attributeKey ) {\n\t\tsuper( editor );\n\n\t\t/**\n\t\t * Attribute that will be set by the command.\n\t\t *\n\t\t * @member {String}\n\t\t */\n\t\tthis.attributeKey = attributeKey;\n\n\t\t/**\n\t\t * Flag indicating whether command is active. For collapsed selection it means that typed characters will have\n\t\t * the command's attribute set. For range selection it means that all nodes inside have the attribute applied.\n\t\t *\n\t\t * @observable\n\t\t * @member {Boolean} #value\n\t\t */\n\t\tthis.set( 'value', false );\n\n\t\tthis.listenTo( this.editor.document.selection, 'change:attribute', () => {\n\t\t\tthis.value = this.editor.document.selection.hasAttribute( this.attributeKey );\n\t\t} );\n\t}\n\n\t/**\n\t * Checks if {@link module:engine/model/document~Document#schema} allows to create attribute in\n\t * {@link module:engine/model/document~Document#selection}.\n\t *\n\t * @private\n\t * @returns {Boolean}\n\t */\n\t_checkEnabled() {\n\t\tconst document = this.editor.document;\n\n\t\treturn isAttributeAllowedInSelection( this.attributeKey, document.selection, document.schema );\n\t}\n\n\t/**\n\t * Executes the command: adds or removes attributes to nodes or selection.\n\t *\n\t * If the command is active (`value == true`), it will remove attributes. Otherwise, it will set attributes.\n\t *\n\t * The execution result differs, depending on the {@link module:engine/model/document~Document#selection}:\n\t * * if selection is on a range, the command applies the attribute on all nodes in that ranges\n\t * (if they are allowed to have this attribute by the {@link module:engine/model/schema~Schema schema}),\n\t * * if selection is collapsed in non-empty node, the command applies attribute to the\n\t * {@link module:engine/model/document~Document#selection} itself (note that typed characters copy attributes from selection),\n\t * * if selection is collapsed in empty node, the command applies attribute to the parent node of selection (note\n\t * that selection inherits all attributes from a node if it is in empty node).\n\t *\n\t * If the command is disabled (`isEnabled == false`) when it is executed, nothing will happen.\n\t *\n\t * @private\n\t * @param {Object} [options] Options of command.\n\t * @param {Boolean} [options.forceValue] If set it will force command behavior. If `true`, command will apply attribute,\n\t * otherwise command will remove attribute. If not set, command will look for it's current value to decide what it should do.\n\t * @param {module:engine/model/batch~Batch} [options.batch] Batch to group undo steps.\n\t */\n\t_doExecute( options = {} ) {\n\t\tconst document = this.editor.document;\n\t\tconst selection = document.selection;\n\t\tconst value = ( options.forceValue === undefined ) ? !this.value : options.forceValue;\n\n\t\t// If selection has non-collapsed ranges, we change attribute on nodes inside those ranges.\n\t\tdocument.enqueueChanges( () => {\n\t\t\tif ( selection.isCollapsed ) {\n\t\t\t\tif ( value ) {\n\t\t\t\t\tselection.setAttribute( this.attributeKey, true );\n\t\t\t\t} else {\n\t\t\t\t\tselection.removeAttribute( this.attributeKey );\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\tconst ranges = getSchemaValidRanges( this.attributeKey, selection.getRanges(), document.schema );\n\n\t\t\t\t// Keep it as one undo step.\n\t\t\t\tconst batch = options.batch || document.batch();\n\n\t\t\t\tfor ( let range of ranges ) {\n\t\t\t\t\tif ( value ) {\n\t\t\t\t\t\tbatch.setAttribute( range, this.attributeKey, value );\n\t\t\t\t\t} else {\n\t\t\t\t\t\tbatch.removeAttribute( range, this.attributeKey );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t} );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-core/src/command/toggleattributecommand.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/conversion/mapper\n */\n\nimport ModelPosition from '../model/position';\nimport ModelRange from '../model/range';\n\nimport ViewPosition from '../view/position';\nimport ViewRange from '../view/range';\nimport ViewText from '../view/text';\n\nimport EmitterMixin from '@ckeditor/ckeditor5-utils/src/emittermixin';\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\n\n/**\n * Maps elements and positions between {@link module:engine/view/document~Document view} and {@link module:engine/model/model model}.\n *\n * Mapper use bound elements to find corresponding elements and positions, so, to get proper results,\n * all model elements should be {@link module:engine/conversion/mapper~Mapper#bindElements bound}.\n *\n * To map complex model to/from view relations, you may provide custom callbacks for\n * {@link module:engine/conversion/mapper~Mapper#event:modelToViewPosition modelToViewPosition event} and\n * {@link module:engine/conversion/mapper~Mapper#event:viewToModelPosition viewToModelPosition event} that are fired whenever\n * a position mapping request occurs.\n * Those events are fired by {@link module:engine/conversion/mapper~Mapper#toViewPosition toViewPosition}\n * and {@link module:engine/conversion/mapper~Mapper#toModelPosition toModelPosition} methods. `Mapper` adds it's own default callbacks\n * with `'lowest'` priority. To override default `Mapper` mapping, add custom callback with higher priority and\n * stop the event.\n */\nexport default class Mapper {\n\t/**\n\t * Creates an instance of the mapper.\n\t */\n\tconstructor() {\n\t\t/**\n\t\t * Model element to view element mapping.\n\t\t *\n\t\t * @private\n\t\t * @member {WeakMap}\n\t\t */\n\t\tthis._modelToViewMapping = new WeakMap();\n\n\t\t/**\n\t\t * View element to model element mapping.\n\t\t *\n\t\t * @private\n\t\t * @member {WeakMap}\n\t\t */\n\t\tthis._viewToModelMapping = new WeakMap();\n\n\t\t/**\n\t\t * A map containing callbacks between view element names and functions evaluating length of view elements\n\t\t * in model.\n\t\t *\n\t\t * @private\n\t\t * @member {Map}\n\t\t */\n\t\tthis._viewToModelLengthCallbacks = new Map();\n\t}\n\n\t/**\n\t * Marks model and view elements as corresponding. Corresponding elements can be retrieved by using\n\t * the {@link module:engine/conversion/mapper~Mapper#toModelElement toModelElement} and\n\t * {@link module:engine/conversion/mapper~Mapper#toViewElement toViewElement} methods.\n\t * The information that elements are bound is also used to translate positions.\n\t *\n\t * @param {module:engine/model/element~Element} modelElement Model element.\n\t * @param {module:engine/view/element~Element} viewElement View element.\n\t */\n\tbindElements( modelElement, viewElement ) {\n\t\tthis._modelToViewMapping.set( modelElement, viewElement );\n\t\tthis._viewToModelMapping.set( viewElement, modelElement );\n\t}\n\n\t/**\n\t * Unbinds given {@link module:engine/view/element~Element view element} from the map.\n\t *\n\t * @param {module:engine/view/element~Element} viewElement View element to unbind.\n\t */\n\tunbindViewElement( viewElement ) {\n\t\tconst modelElement = this.toModelElement( viewElement );\n\n\t\tthis._unbindElements( modelElement, viewElement );\n\t}\n\n\t/**\n\t * Unbinds given {@link module:engine/model/element~Element model element} from the map.\n\t *\n\t * @param {module:engine/model/element~Element} modelElement Model element to unbind.\n\t */\n\tunbindModelElement( modelElement ) {\n\t\tconst viewElement = this.toViewElement( modelElement );\n\n\t\tthis._unbindElements( modelElement, viewElement );\n\t}\n\n\t/**\n\t * Removes all model to view and view to model bindings.\n\t */\n\tclearBindings() {\n\t\tthis._modelToViewMapping = new WeakMap();\n\t\tthis._viewToModelMapping = new WeakMap();\n\t}\n\n\t/**\n\t * Gets the corresponding model element.\n\t *\n\t * **Note:** {@link module:engine/view/uielement~UIElement} does not have corresponding element in model.\n\t *\n\t * @param {module:engine/view/element~Element} viewElement View element.\n\t * @returns {module:engine/model/element~Element|undefined} Corresponding model element or `undefined` if not found.\n\t */\n\ttoModelElement( viewElement ) {\n\t\treturn this._viewToModelMapping.get( viewElement );\n\t}\n\n\t/**\n\t * Gets the corresponding view element.\n\t *\n\t * @param {module:engine/model/element~Element} modelElement Model element.\n\t * @returns {module:engine/view/element~Element|undefined} Corresponding view element or `undefined` if not found.\n\t */\n\ttoViewElement( modelElement ) {\n\t\treturn this._modelToViewMapping.get( modelElement );\n\t}\n\n\t/**\n\t * Gets the corresponding model range.\n\t *\n\t * @param {module:engine/view/range~Range} viewRange View range.\n\t * @returns {module:engine/model/range~Range} Corresponding model range.\n\t */\n\ttoModelRange( viewRange ) {\n\t\treturn new ModelRange( this.toModelPosition( viewRange.start ), this.toModelPosition( viewRange.end ) );\n\t}\n\n\t/**\n\t * Gets the corresponding view range.\n\t *\n\t * @param {module:engine/model/range~Range} modelRange Model range.\n\t * @returns {module:engine/view/range~Range} Corresponding view range.\n\t */\n\ttoViewRange( modelRange ) {\n\t\treturn new ViewRange( this.toViewPosition( modelRange.start ), this.toViewPosition( modelRange.end ) );\n\t}\n\n\t/**\n\t * Gets the corresponding model position.\n\t *\n\t * @fires viewToModelPosition\n\t * @param {module:engine/view/position~Position} viewPosition View position.\n\t * @returns {module:engine/model/position~Position} Corresponding model position.\n\t */\n\ttoModelPosition( viewPosition ) {\n\t\tconst data = {\n\t\t\tviewPosition: viewPosition,\n\t\t\tmodelPosition: this._defaultToModelPosition( viewPosition ),\n\t\t\tmapper: this\n\t\t};\n\n\t\tthis.fire( 'viewToModelPosition', data );\n\n\t\treturn data.modelPosition;\n\t}\n\n\t/**\n\t * Maps model position to view position using default mapper algorithm.\n\t *\n\t * @private\n\t * @param {module:engine/model/position~Position} modelPosition\n\t * @returns {module:engine/view/position~Position} View position mapped from model position.\n\t */\n\t_defaultToViewPosition( modelPosition ) {\n\t\tlet viewContainer = this._modelToViewMapping.get( modelPosition.parent );\n\n\t\treturn this._findPositionIn( viewContainer, modelPosition.offset );\n\t}\n\n\t/**\n\t * Gets the corresponding view position.\n\t *\n\t * @fires modelToViewPosition\n\t * @param {module:engine/model/position~Position} modelPosition Model position.\n\t * @returns {module:engine/view/position~Position} Corresponding view position.\n\t */\n\ttoViewPosition( modelPosition ) {\n\t\tconst data = {\n\t\t\tviewPosition: this._defaultToViewPosition( modelPosition ),\n\t\t\tmodelPosition: modelPosition,\n\t\t\tmapper: this\n\t\t};\n\n\t\tthis.fire( 'modelToViewPosition', data );\n\n\t\treturn data.viewPosition;\n\t}\n\n\t/**\n\t * Maps view position to model position using default mapper algorithm.\n\t *\n\t * @private\n\t * @param {module:engine/view/position~Position} viewPosition\n\t * @returns {module:engine/model/position~Position} Model position mapped from view position.\n\t */\n\t_defaultToModelPosition( viewPosition ) {\n\t\tlet viewBlock = viewPosition.parent;\n\t\tlet modelParent = this._viewToModelMapping.get( viewBlock );\n\n\t\twhile ( !modelParent ) {\n\t\t\tviewBlock = viewBlock.parent;\n\t\t\tmodelParent = this._viewToModelMapping.get( viewBlock );\n\t\t}\n\n\t\tlet modelOffset = this._toModelOffset( viewPosition.parent, viewPosition.offset, viewBlock );\n\n\t\treturn ModelPosition.createFromParentAndOffset( modelParent, modelOffset );\n\t}\n\n\t/**\n\t * Registers a callback that evaluates the length in the model of a view element with given name.\n\t *\n\t * The callback is fired with one argument, which is a view element instance. The callback is expected to return\n\t * a number representing the length of view element in model.\n\t *\n\t *\t\t// List item in view may contain nested list, which have other list items. In model though,\n\t *\t\t// the lists are represented by flat structure. Because of those differences, length of list view element\n\t *\t\t// may be greater than one. In the callback it's checked how many nested list items are in evaluated list item.\n\t *\n\t *\t\tfunction getViewListItemLength( element ) {\n\t *\t\t\tlet length = 1;\n\t *\n\t *\t\t\tfor ( let child of element.getChildren() ) {\n\t *\t\t\t\tif ( child.name == 'ul' || child.name == 'ol' ) {\n\t *\t\t\t\t\tfor ( let item of child.getChildren() ) {\n\t *\t\t\t\t\t\tlength += getViewListItemLength( item );\n\t *\t\t\t\t\t}\n\t *\t\t\t\t}\n\t *\t\t\t}\n\t *\n\t *\t\t\treturn length;\n\t *\t\t}\n\t *\n\t *\t\tmapper.registerViewToModelLength( 'li', getViewListItemLength );\n\t *\n\t * @param {String} viewElementName Name of view element for which callback is registered.\n\t * @param {Function} lengthCallback Function return a length of view element instance in model.\n\t */\n\tregisterViewToModelLength( viewElementName, lengthCallback ) {\n\t\tthis._viewToModelLengthCallbacks.set( viewElementName, lengthCallback );\n\t}\n\n\t/**\n\t * Calculates model offset based on the view position and the block element.\n\t *\n\t * Example:\n\t *\n\t *\t\t<p>foo<b>ba|r</b></p> // _toModelOffset( b, 2, p ) -> 5\n\t *\n\t * Is a sum of:\n\t *\n\t *\t\t<p>foo|<b>bar</b></p> // _toModelOffset( p, 3, p ) -> 3\n\t *\t\t<p>foo<b>ba|r</b></p> // _toModelOffset( b, 2, b ) -> 2\n\t *\n\t * @private\n\t * @param {module:engine/view/element~Element} viewParent Position parent.\n\t * @param {Number} viewOffset Position offset.\n\t * @param {module:engine/view/element~Element} viewBlock Block used as a base to calculate offset.\n\t * @returns {Number} Offset in the model.\n\t */\n\t_toModelOffset( viewParent, viewOffset, viewBlock ) {\n\t\tif ( viewBlock != viewParent ) {\n\t\t\t// See example.\n\t\t\tconst offsetToParentStart = this._toModelOffset( viewParent.parent, viewParent.index, viewBlock );\n\t\t\tconst offsetInParent = this._toModelOffset( viewParent, viewOffset, viewParent );\n\n\t\t\treturn offsetToParentStart + offsetInParent;\n\t\t}\n\n\t\t// viewBlock == viewParent, so we need to calculate the offset in the parent element.\n\n\t\t// If the position is a text it is simple (\"ba|r\" -> 2).\n\t\tif ( viewParent.is( 'text' ) ) {\n\t\t\treturn viewOffset;\n\t\t}\n\n\t\t// If the position is in an element we need to sum lengths of siblings ( <b> bar </b> foo | -> 3 + 3 = 6 ).\n\t\tlet modelOffset = 0;\n\n\t\tfor ( let i = 0; i < viewOffset; i++ ) {\n\t\t\tmodelOffset += this.getModelLength( viewParent.getChild( i ) );\n\t\t}\n\n\t\treturn modelOffset;\n\t}\n\n\t/**\n\t * Removes binding between given elements.\n\t *\n\t * @private\n\t * @param {module:engine/model/element~Element} modelElement Model element to unbind.\n\t * @param {module:engine/view/element~Element} viewElement View element to unbind.\n\t */\n\t_unbindElements( modelElement, viewElement ) {\n\t\tthis._viewToModelMapping.delete( viewElement );\n\t\tthis._modelToViewMapping.delete( modelElement );\n\t}\n\n\t/**\n\t * Gets the length of the view element in the model.\n\t *\n\t * The length is calculated as follows:\n\t * * if {@link #registerViewToModelLength length mapping callback} is provided for given `viewNode` it is used to\n\t * evaluate model length (`viewNode` is used as first and only parameter passed to the callback),\n\t * * length of a {@link module:engine/view/text~Text text node} is equal to the length of it's\n\t * {@link module:engine/view/text~Text#data data},\n\t * * length of a {@link module:engine/view/uielement~UIElement ui element} is equal to 0,\n\t * * length of a mapped {@link module:engine/view/element~Element element} is equal to 1,\n\t * * length of a not-mapped {@link module:engine/view/element~Element element} is equal to the length of it's children.\n\t *\n\t * Examples:\n\t *\n\t *\t\tfoo                          -> 3 // Text length is equal to it's data length.\n\t *\t\t<p>foo</p>                   -> 1 // Length of an element which is mapped is by default equal to 1.\n\t *\t\t<b>foo</b>                   -> 3 // Length of an element which is not mapped is a length of its children.\n\t *\t\t<div><p>x</p><p>y</p></div>  -> 2 // Assuming that <div> is not mapped and <p> are mapped.\n\t *\n\t * @param {module:engine/view/element~Element} viewNode View node.\n\t * @returns {Number} Length of the node in the tree model.\n\t */\n\tgetModelLength( viewNode ) {\n\t\tif ( this._viewToModelLengthCallbacks.get( viewNode.name ) ) {\n\t\t\tconst callback = this._viewToModelLengthCallbacks.get( viewNode.name );\n\n\t\t\treturn callback( viewNode );\n\t\t} else if ( this._viewToModelMapping.has( viewNode ) ) {\n\t\t\treturn 1;\n\t\t} else if ( viewNode.is( 'text' ) ) {\n\t\t\treturn viewNode.data.length;\n\t\t} else if ( viewNode.is( 'uiElement' ) ) {\n\t\t\treturn 0;\n\t\t} else {\n\t\t\tlet len = 0;\n\n\t\t\tfor ( let child of viewNode.getChildren() ) {\n\t\t\t\tlen += this.getModelLength( child );\n\t\t\t}\n\n\t\t\treturn len;\n\t\t}\n\t}\n\n\t/**\n\t * Finds the position in the view node (or its children) with the expected model offset.\n\t *\n\t * Example:\n\t *\n\t *\t\t<p>fo<b>bar</b>bom</p> -> expected offset: 4\n\t *\n\t *\t\t_findPositionIn( p, 4 ):\n\t *\t\t<p>|fo<b>bar</b>bom</p> -> expected offset: 4, actual offset: 0\n\t *\t\t<p>fo|<b>bar</b>bom</p> -> expected offset: 4, actual offset: 2\n\t *\t\t<p>fo<b>bar</b>|bom</p> -> expected offset: 4, actual offset: 5 -> we are too far\n\t *\n\t *\t\t_findPositionIn( b, 4 - ( 5 - 3 ) ):\n\t *\t\t<p>fo<b>|bar</b>bom</p> -> expected offset: 2, actual offset: 0\n\t *\t\t<p>fo<b>bar|</b>bom</p> -> expected offset: 2, actual offset: 3 -> we are too far\n\t *\n\t *\t\t_findPositionIn( bar, 2 - ( 3 - 3 ) ):\n\t *\t\tWe are in the text node so we can simple find the offset.\n\t *\t\t<p>fo<b>ba|r</b>bom</p> -> expected offset: 2, actual offset: 2 -> position found\n\t *\n\t * @private\n\t * @param {module:engine/view/element~Element} viewParent Tree view element in which we are looking for the position.\n\t * @param {Number} expectedOffset Expected offset.\n\t * @returns {module:engine/view/position~Position} Found position.\n\t */\n\t_findPositionIn( viewParent, expectedOffset ) {\n\t\t// Last scanned view node.\n\t\tlet viewNode;\n\t\t// Length of the last scanned view node.\n\t\tlet lastLength = 0;\n\n\t\tlet modelOffset = 0;\n\t\tlet viewOffset = 0;\n\n\t\t// In the text node it is simple: offset in the model equals offset in the text.\n\t\tif ( viewParent.is( 'text' ) ) {\n\t\t\treturn new ViewPosition( viewParent, expectedOffset );\n\t\t}\n\n\t\t// In other cases we add lengths of child nodes to find the proper offset.\n\n\t\t// If it is smaller we add the length.\n\t\twhile ( modelOffset < expectedOffset ) {\n\t\t\tviewNode = viewParent.getChild( viewOffset );\n\t\t\tlastLength = this.getModelLength( viewNode );\n\t\t\tmodelOffset += lastLength;\n\t\t\tviewOffset++;\n\t\t}\n\n\t\t// If it equals we found the position.\n\t\tif ( modelOffset == expectedOffset ) {\n\t\t\treturn this._moveViewPositionToTextNode( new ViewPosition( viewParent, viewOffset ) );\n\t\t}\n\t\t// If it is higher we need to enter last child.\n\t\telse {\n\t\t\t// ( modelOffset - lastLength ) is the offset to the child we enter,\n\t\t\t// so we subtract it from the expected offset to fine the offset in the child.\n\t\t\treturn this._findPositionIn( viewNode, expectedOffset - ( modelOffset - lastLength ) );\n\t\t}\n\t}\n\n\t/**\n\t * Because we prefer positions in text nodes over positions next to text node moves view position to the text node\n\t * if it was next to it.\n\t *\n\t *\t\t<p>[]<b>foo</b></p> -> <p>[]<b>foo</b></p> // do not touch if position is not directly next to text\n\t *\t\t<p>foo[]<b>foo</b></p> -> <p>foo{}<b>foo</b></p> // move to text node\n\t *\t\t<p><b>[]foo</b></p> -> <p><b>{}foo</b></p> // move to text node\n\t *\n\t * @private\n\t * @param {module:engine/view/position~Position} viewPosition Position potentially next to text node.\n\t * @returns {module:engine/view/position~Position} Position in text node if possible.\n\t */\n\t_moveViewPositionToTextNode( viewPosition ) {\n\t\t// If the position is just after text node, put it at the end of that text node.\n\t\t// If the position is just before text node, put it at the beginning of that text node.\n\t\tconst nodeBefore = viewPosition.nodeBefore;\n\t\tconst nodeAfter = viewPosition.nodeAfter;\n\n\t\tif ( nodeBefore instanceof ViewText ) {\n\t\t\treturn new ViewPosition( nodeBefore, nodeBefore.data.length );\n\t\t} else if ( nodeAfter instanceof ViewText ) {\n\t\t\treturn new ViewPosition( nodeAfter, 0 );\n\t\t}\n\n\t\t// Otherwise, just return the given position.\n\t\treturn viewPosition;\n\t}\n}\n\nmix( Mapper, EmitterMixin );\n\n/**\n * Fired for each model-to-view position mapping request. The purpose of this event is to enable custom model-to-view position\n * mapping. Callbacks added to this event take {@link module:engine/model/position~Position model position} and are expected to calculate\n * {@link module:engine/view/position~Position view position}. Calculated view position should be added as `viewPosition` value in\n * `data` object that is passed as one of parameters to the event callback.\n *\n * \t\t// Assume that \"captionedImage\" model element is converted to <img> and following <span> elements in view,\n * \t\t// and the model element is bound to <img> element. Force mapping model positions inside \"captionedImage\" to that <span> element.\n *\t\tmapper.on( 'modelToViewPosition', ( evt, data ) => {\n *\t\t\tconst positionParent = modelPosition.parent;\n *\n *\t\t\tif ( positionParent.name == 'captionedImage' ) {\n *\t\t\t\tconst viewImg = mapper.toViewElement( positionParent );\n *\t\t\t\tconst viewCaption = viewImg.nextSibling; // The <span> element.\n *\n *\t\t\t\tdata.viewPosition = new ViewPosition( viewCaption, modelPosition.offset );\n *\t\t\t\tevt.stop();\n *\t\t\t}\n *\t\t} );\n *\n * **Note:** these callbacks are called **very often**. For efficiency reasons, it is advised to use them only when position\n * mapping between given model and view elements is unsolvable using just elements mapping and default algorithm. Also,\n * the condition that checks if special case scenario happened should be as simple as possible.\n *\n * @event modelToViewPosition\n * @param {Object} data Data pipeline object that can store and pass data between callbacks. The callback should add\n * `viewPosition` value to that object with calculated {@link module:engine/view/position~Position view position}.\n * @param {module:engine/model/position~Position} data.modelPosition Model position to be mapped.\n * @param {module:engine/view/position~Position} data.viewPosition View position that is a result of mapping\n * `modelPosition` using `Mapper` default algorithm.\n * @param {module:engine/conversion/mapper~Mapper} data.mapper Mapper instance that fired the event.\n */\n\n/**\n * Fired for each view-to-model position mapping request. See {@link module:engine/conversion/mapper~Mapper#event:modelToViewPosition}.\n *\n * \t\t// See example in `modelToViewPosition` event description.\n * \t\t// This custom mapping will map positions from <span> element next to <img> to the \"captionedImage\" element.\n *\t\tmapper.on( 'viewToModelPosition', ( evt, data ) => {\n *\t\t\tconst positionParent = viewPosition.parent;\n *\n *\t\t\tif ( positionParent.hasClass( 'image-caption' ) ) {\n *\t\t\t\tconst viewImg = positionParent.previousSibling;\n *\t\t\t\tconst modelImg = mapper.toModelElement( viewImg );\n *\n *\t\t\t\tdata.modelPosition = new ModelPosition( modelImg, viewPosition.offset );\n *\t\t\t\tevt.stop();\n *\t\t\t}\n *\t\t} );\n *\n * @event viewToModelPosition\n * @param {Object} data Data pipeline object that can store and pass data between callbacks. The callback should add\n * `modelPosition` value to that object with calculated {@link module:engine/model/position~Position model position}.\n * @param {module:engine/view/position~Position} data.viewPosition View position to be mapped.\n * @param {module:engine/model/position~Position} data.modelPosition Model position that is a result of mapping\n * `viewPosition` using `Mapper` default algorithm.\n * @param {module:engine/conversion/mapper~Mapper} data.mapper Mapper instance that fired the event.\n */\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/conversion/mapper.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\nimport ViewElement from '../view/element';\nimport ViewRange from '../view/range';\nimport viewWriter from '../view/writer';\n\n/**\n * Contains {@link module:engine/model/selection~Selection model selection} to\n * {@link module:engine/view/selection~Selection view selection} converters for\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher}.\n *\n * @module engine/conversion/model-selection-to-view-converters\n */\n\n/**\n * Function factory, creates a converter that converts non-collapsed {@link module:engine/model/selection~Selection model selection} to\n * {@link module:engine/view/selection~Selection view selection}. The converter consumes appropriate value from `consumable` object\n * and maps model positions from selection to view positions.\n *\n *\t\tmodelDispatcher.on( 'selection', convertRangeSelection() );\n *\n * @returns {Function} Selection converter.\n */\nexport function convertRangeSelection() {\n\treturn ( evt, data, consumable, conversionApi ) => {\n\t\tconst selection = data.selection;\n\n\t\tif ( selection.isCollapsed ) {\n\t\t\treturn;\n\t\t}\n\n\t\tif ( !consumable.consume( selection, 'selection' ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconversionApi.viewSelection.removeAllRanges();\n\n\t\tfor ( let range of selection.getRanges() ) {\n\t\t\tconst viewRange = conversionApi.mapper.toViewRange( range );\n\t\t\tconversionApi.viewSelection.addRange( viewRange, selection.isBackward );\n\t\t}\n\t};\n}\n\n/**\n * Function factory, creates a converter that converts collapsed {@link module:engine/model/selection~Selection model selection} to\n * {@link module:engine/view/selection~Selection view selection}. The converter consumes appropriate value from `consumable` object,\n * maps model selection position to view position and breaks {@link module:engine/view/attributeelement~AttributeElement attribute elements}\n * at the selection position.\n *\n *\t\tmodelDispatcher.on( 'selection', convertCollapsedSelection() );\n *\n * Example of view state before and after converting collapsed selection:\n *\n *\t\t   <p><strong>f^oo<strong>bar</p>\n *\t\t-> <p><strong>f</strong>^<strong>oo</strong>bar</p>\n *\n * By breaking attribute elements like `<strong>`, selection is in correct element. See also complementary\n * {@link module:engine/conversion/model-selection-to-view-converters~convertSelectionAttribute attribute converter}\n * for selection attributes,\n * which wraps collapsed selection into view elements. Those converters together ensure, that selection ends up in\n * appropriate attribute elements.\n *\n * See also {@link module:engine/conversion/model-selection-to-view-converters~clearAttributes} which does a clean-up\n * by merging attributes.\n *\n * @returns {Function} Selection converter.\n */\nexport function convertCollapsedSelection() {\n\treturn ( evt, data, consumable, conversionApi ) => {\n\t\tconst selection = data.selection;\n\n\t\tif ( !selection.isCollapsed ) {\n\t\t\treturn;\n\t\t}\n\n\t\tif ( !consumable.consume( selection, 'selection' ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst modelPosition = selection.getFirstPosition();\n\t\tconst viewPosition = conversionApi.mapper.toViewPosition( modelPosition );\n\t\tconst brokenPosition = viewWriter.breakAttributes( viewPosition );\n\n\t\tconversionApi.viewSelection.removeAllRanges();\n\t\tconversionApi.viewSelection.addRange( new ViewRange( brokenPosition, brokenPosition ) );\n\t};\n}\n\n/**\n * Function factory, creates a converter that converts {@link module:engine/model/selection~Selection model selection} attributes to\n * {@link module:engine/view/attributeelement~AttributeElement view attribute elements}. The converter works only for collapsed selection.\n * The converter consumes appropriate value from `consumable` object, maps model selection position to view position and\n * wraps that position into a view attribute element.\n *\n * The wrapping node depends on passed parameter. If {@link module:engine/view/element~Element} was passed, it will be cloned and\n * the copy will become the wrapping element. If `Function` is provided, it is passed all the parameters of the\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:selectionAttribute selectionAttribute event}.\n * It's expected that the function returns a {@link module:engine/view/attributeelement~AttributeElement}.\n * The result of the function will be the wrapping element.\n *\n *\t\tmodelDispatcher.on( 'selectionAttribute:italic', convertSelectionAttribute( new ViewAttributeElement( 'em' ) ) );\n *\n *\t\tfunction styleElementCreator( styleValue ) {\n *\t\t\tif ( styleValue == 'important' ) {\n *\t\t\t\treturn new ViewAttributeElement( 'strong', { style: 'text-transform:uppercase;' } );\n *\t\t\t} else if ( styleValue == 'gold' ) {\n *\t\t\t\treturn new ViewAttributeElement( 'span', { style: 'color:yellow;' } );\n *\t\t\t}\n *\t\t}\n *\t\tmodelDispatcher.on( 'selectionAttribute:style', convertSelectionAttribute( styleCreator ) );\n *\n * **Note:** You can use the same `elementCreator` function for this converter factory\n * and {@link module:engine/conversion/model-to-view-converters~wrapRange}\n * model to view converter, as long as the `elementCreator` function uses only the first parameter (attribute value).\n *\n *\t\tmodelDispatcher.on( 'selection', convertCollapsedSelection() );\n *\t\tmodelDispatcher.on( 'selectionAttribute:italic', convertSelectionAttribute( new ViewAttributeElement( 'em' ) ) );\n *\t\tmodelDispatcher.on( 'selectionAttribute:bold', convertSelectionAttribute( new ViewAttributeElement( 'strong' ) ) );\n *\n * Example of view states before and after converting collapsed selection:\n *\n *\t\t   <p><em>f^oo</em>bar</p>\n *\t\t-> <p><em>f</em>^<em>oo</em>bar</p>\n *\t\t-> <p><em>f^oo</em>bar</p>\n *\n * Example of view state after converting collapsed selection. The scenario is: selection is inside bold text (`<strong>` element)\n * but it does not have bold attribute itself and has italic attribute instead (let's assume that user turned off bold and turned\n * on italic with selection collapsed):\n *\n *\t\t   <p><strong>f^oo<strong>bar</p>\n *\t\t-> <p><strong>f</strong>^<strong>oo<strong>bar</p>\n *\t\t-> <p><strong>f</strong><em>^</em><strong>oo</strong>bar</p>\n *\n * In first example, nothing has changed, because first `<em>` element got broken by `convertCollapsedSelection()` converter,\n * but then it got wrapped-back by `convertSelectionAttribute()` converter. In second example, notice how `<strong>` element\n * is broken to prevent putting selection in it, since selection has no `bold` attribute.\n *\n * @param {module:engine/view/attributeelement~AttributeElement|Function} elementCreator View element,\n * or function returning a view element, which will be used for wrapping.\n * @returns {Function} Selection converter.\n */\nexport function convertSelectionAttribute( elementCreator ) {\n\treturn ( evt, data, consumable, conversionApi ) => {\n\t\tconst viewElement = elementCreator instanceof ViewElement ?\n\t\t\telementCreator.clone( true ) :\n\t\t\telementCreator( data.value, data, data.selection, consumable, conversionApi );\n\n\t\tif ( !viewElement ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst consumableName = 'selectionAttribute:' + data.key;\n\n\t\twrapCollapsedSelectionPosition( data.selection, conversionApi.viewSelection, viewElement, consumable, consumableName );\n\t};\n}\n\n/**\n * Performs similar conversion as {@link ~convertSelectionAttribute}, but depends on a marker name of a marker in which\n * collapsed selection is placed.\n *\n *\t\tmodelDispatcher.on( 'selectionMarker:searchResult', wrapRange( new ViewAttributeElement( 'span', { class: 'searchResult' } ) ) );\n *\n * **Note:** You can use the same `elementCreator` function for this converter factory\n * and {@link module:engine/conversion/model-to-view-converters~wrapRange}.\n *\n * @see module:engine/conversion/model-selection-to-view-converters~convertSelectionAttribute\n * @param {module:engine/view/attributeelement~AttributeElement|Function} elementCreator View element,\n * or function returning a view element, which will be used for wrapping.\n * @returns {Function} Selection converter.\n */\nexport function convertSelectionMarker( elementCreator ) {\n\treturn ( evt, data, consumable, conversionApi ) => {\n\t\tconst viewElement = elementCreator instanceof ViewElement ?\n\t\t\telementCreator.clone( true ) :\n\t\t\telementCreator( data, consumable, conversionApi );\n\n\t\tif ( !viewElement ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst consumableName = 'selectionMarker:' + data.name;\n\n\t\twrapCollapsedSelectionPosition( data.selection, conversionApi.viewSelection, viewElement, consumable, consumableName );\n\t};\n}\n\n// Helper function for `convertSelectionAttribute` and `convertSelectionMarker`, which perform similar task.\nfunction wrapCollapsedSelectionPosition( modelSelection, viewSelection, viewElement, consumable, consumableName ) {\n\tif ( !modelSelection.isCollapsed ) {\n\t\treturn;\n\t}\n\n\tif ( !consumable.consume( modelSelection, consumableName ) ) {\n\t\treturn;\n\t}\n\n\tlet viewPosition = viewSelection.getFirstPosition();\n\tviewPosition = viewWriter.wrapPosition( viewPosition, viewElement );\n\n\tviewSelection.removeAllRanges();\n\tviewSelection.addRange( new ViewRange( viewPosition, viewPosition ) );\n}\n\n/**\n * Function factory, creates a converter that clears artifacts after the previous\n * {@link module:engine/model/selection~Selection model selection} conversion. It removes all empty\n * {@link module:engine/view/attributeelement~AttributeElement view attribute elements} and merge sibling attributes at all start and end\n * positions of all ranges.\n *\n *\t\t   <p><strong>^</strong></p>\n *\t\t-> <p>^</p>\n *\n *\t\t   <p><strong>foo</strong>^<strong>bar</strong>bar</p>\n *\t\t-> <p><strong>foo^bar<strong>bar</p>\n *\n *\t\t   <p><strong>foo</strong><em>^</em><strong>bar</strong>bar</p>\n *\t\t-> <p><strong>foo^bar<strong>bar</p>\n *\n * This listener should be assigned before any converter for the new selection:\n *\n *\t\tmodelDispatcher.on( 'selection', clearAttributes() );\n *\n * See {@link module:engine/conversion/model-selection-to-view-converters~convertCollapsedSelection}\n * which do the opposite by breaking attributes in the selection position.\n *\n * @returns {Function} Selection converter.\n */\nexport function clearAttributes() {\n\treturn ( evt, data, consumable, conversionApi ) => {\n\t\tfor ( let range of conversionApi.viewSelection.getRanges() ) {\n\t\t\t// Not collapsed selection should not have artifacts.\n\t\t\tif ( range.isCollapsed ) {\n\t\t\t\t// Position might be in the node removed by the view writer.\n\t\t\t\tif ( range.end.parent.document ) {\n\t\t\t\t\tviewWriter.mergeAttributes( range.start );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t\tconversionApi.viewSelection.removeAllRanges();\n\t};\n}\n\n/**\n * Function factory, creates a converter that clears fake selection marking after the previous\n * {@link module:engine/model/selection~Selection model selection} conversion.\n */\nexport function clearFakeSelection() {\n\treturn ( evt, data, consumable, conversionApi ) => conversionApi.viewSelection.setFake( false );\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/conversion/model-selection-to-view-converters.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/conversion/modelconversiondispatcher\n */\n\nimport Consumable from './modelconsumable';\nimport Range from '../model/range';\nimport Position from '../model/position';\nimport DocumentFragment from '../model/documentfragment';\nimport EmitterMixin from '@ckeditor/ckeditor5-utils/src/emittermixin';\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\nimport extend from '@ckeditor/ckeditor5-utils/src/lib/lodash/extend';\n\n/**\n * `ModelConversionDispatcher` is a central point of {@link module:engine/model/model model} conversion, which is\n * a process of reacting to changes in the model and reflecting them by listeners that listen to those changes.\n * In default application, {@link module:engine/model/model model} is converted to {@link module:engine/view/view view}. This means\n * that changes in the model are reflected by changing the view (i.e. adding view nodes or changing attributes on view elements).\n *\n * During conversion process, `ModelConversionDispatcher` fires data-manipulation events, basing on state of the model and prepares\n * data for those events. It is important to note that the events are connected with \"change actions\" like \"inserting\"\n * or \"removing\" so one might say that we are converting \"changes\". This is in contrary to view to model conversion,\n * where we convert view nodes (the structure, not \"changes\" to the view). Note, that because changes are converted\n * and not the structure itself, there is a need to have a mapping between model and the structure on which changes are\n * reflected. To map elements during model to view conversion use {@link module:engine/conversion/mapper~Mapper}.\n *\n * The main use for this class is to listen to {@link module:engine/model/document~Document#event:change Document change event}, process it\n * and then fire specific events telling what exactly has changed. For those events, `ModelConversionDispatcher`\n * creates {@link module:engine/conversion/modelconsumable~ModelConsumable list of consumable values} that should be handled by event\n * callbacks. Those events are listened to by model-to-view converters which convert changes done in the\n * {@link module:engine/model/model model} to changes in the {@link module:engine/view/view view}. `ModelConversionController` also checks\n * the current state of consumables, so it won't fire events for parts of model that were already consumed. This is\n * especially important in callbacks that consume multiple values. See {@link module:engine/conversion/modelconsumable~ModelConsumable}\n * for an example of such callback.\n *\n * Although the primary usage for this class is the model-to-view conversion, `ModelConversionDispatcher` can be used\n * to build custom data processing pipelines that converts model to anything that is needed. Existing model structure can\n * be used to generate events (listening to {@link module:engine/model/document~Document#event:change Document change event} is not\n * required)\n * and custom callbacks can be added to the events (these does not have to be limited to changes in the view).\n *\n * When providing your own event listeners for `ModelConversionDispatcher` keep in mind that any callback that had\n * {@link module:engine/conversion/modelconsumable~ModelConsumable#consume consumed} a value from consumable (and did some changes, i.e. to\n * the view) should also stop the event. This is because whenever a callback is fired it is assumed that there is something\n * to be consumed. Thanks to that approach, you do not have to test whether there is anything to consume at the beginning\n * of your listener callback.\n *\n * Example of providing a converter for `ModelConversionDispatcher`:\n *\n *\t\t// We will convert inserting \"paragraph\" model element into the model.\n *\t\tmodelDispatcher.on( 'insert:paragraph', ( evt, data, consumable, conversionApi ) => {\n *\t\t\t// Remember to consume the part of consumable.\n *\t\t\tconsumable.consume( data.item, 'insert' );\n *\n *\t\t\t// Translate position in model to position in the view.\n *\t\t\tconst viewPosition = conversionApi.mapper.toViewPosition( data.range.start );\n *\n *\t\t\t// Create a P element (note that this converter is for inserting P elements -> 'insert:paragraph').\n *\t\t\tconst viewElement = new ViewElement( 'p' );\n *\n *\t\t\t// Bind the newly created view element to model element so positions will map accordingly in future.\n *\t\t\tconversionApi.mapper.bindElements( data.item, viewElement );\n *\n *\t\t\t// Add the newly created view element to the view.\n *\t\t\tviewWriter.insert( viewPosition, viewElement );\n *\n *\t\t\t// Remember to stop the event propagation if the data.item was consumed.\n *\t\t\tevt.stop();\n *\t\t} );\n *\n * Callback that \"overrides\" other callback:\n *\n *\t\t// Special converter for `linkHref` attribute added on custom `quote` element. Note, that this\n *\t\t// attribute may be the same as the attribute added by other features (link feature in this case).\n *\t\t// It might be even added by that feature! It makes sense that a part of content that is a quote is linked\n *\t\t// to an external source so it makes sense that link feature works on the custom quote element.\n *\t\t// However, we have to make sure that the attributes added by link feature are correctly converted.\n *\t\t// To block default `linkHref` conversion we have to:\n *\t\t// 1) add this callback with higher priority than link feature callback,\n *\t\t// 2) consume `linkHref` attribute add change.\n *\t\tmodelConversionDispatcher.on( 'addAttribute:linkHref:quote', ( evt, data, consumable, conversionApi ) => {\n *\t\t\tconsumable.consume( data.item, 'addAttribute:linkHref' );\n *\n *\t\t\t// Create a button that will represent the `linkHref` attribute.\n *\t\t\tlet viewSourceBtn = new ViewElement( 'a', {\n *\t\t\t\thref: data.item.getAttribute( 'linkHref' ),\n *\t\t\t\ttitle: 'source'\n *\t\t\t} );\n *\n *\t\t\t// Add a class for the button.\n *\t\t\tviewSourceBtn.addClass( 'source' );\n *\n *\t\t\t// Insert the button using writer API.\n *\t\t\t// If `addAttribute` event is fired by\n *\t\t\t// `module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#convertInsert` it is fired\n *\t\t\t// after `data.item` insert conversion was done. If the event is fired due to attribute insertion coming from\n *\t\t\t// different source, `data.item` already existed. This means we are safe to get `viewQuote` from mapper.\n *\t\t\tconst viewQuote = conversionApi.mapper.toViewElement( data.item );\n *\t\t\tconst position = new ViewPosition( viewQuote, viewQuote.childCount );\n *\t\t\tviewWriter.insert( position, viewSourceBtn );\n *\n *\t\t\tevt.stop();\n *\t\t}, { priority: 'high' } );\n */\nexport default class ModelConversionDispatcher {\n\t/**\n\t * Creates a `ModelConversionDispatcher` that operates using passed API.\n\t *\n\t * @param {module:engine/model/document~Document} modelDocument Model document instance bound with this dispatcher.\n\t * @param {Object} [conversionApi] Interface passed by dispatcher to the events callbacks.\n\t */\n\tconstructor( modelDocument, conversionApi = {} ) {\n\t\t/**\n\t\t * Model document instance bound with this dispatcher.\n\t\t *\n\t\t * @private\n\t\t * @member {module:engine/model/document~Document}\n\t\t */\n\t\tthis._modelDocument = modelDocument;\n\n\t\t/**\n\t\t * Interface passed by dispatcher to the events callbacks.\n\t\t *\n\t\t * @member {Object}\n\t\t */\n\t\tthis.conversionApi = extend( { dispatcher: this }, conversionApi );\n\t}\n\n\t/**\n\t * Prepares data and fires a proper event.\n\t *\n\t * The method is crafted to take use of parameters passed in {@link module:engine/model/document~Document#event:change Document change\n\t * event}.\n\t *\n\t * @see module:engine/model/document~Document#event:change\n\t * @fires insert\n\t * @fires remove\n\t * @fires addAttribute\n\t * @fires removeAttribute\n\t * @fires changeAttribute\n\t * @fires addMarker\n\t * @param {String} type Change type.\n\t * @param {Object} data Additional information about the change.\n\t */\n\tconvertChange( type, data ) {\n\t\t// Do not convert changes if they happen in graveyard.\n\t\t// Graveyard is a special root that has no view / no other representation and changes done in it should not be converted.\n\t\tif ( type !== 'remove' && data.range && data.range.root.rootName == '$graveyard' ) {\n\t\t\treturn;\n\t\t}\n\n\t\tif ( type == 'remove' && data.sourcePosition.root.rootName == '$graveyard' ) {\n\t\t\treturn;\n\t\t}\n\n\t\tif ( type == 'rename' && data.element.root.rootName == '$graveyard' ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// We can safely dispatch changes.\n\t\tif ( type == 'insert' || type == 'reinsert' ) {\n\t\t\tthis.convertInsertion( data.range );\n\t\t} else if ( type == 'move' ) {\n\t\t\tthis.convertMove( data.sourcePosition, data.range );\n\t\t} else if ( type == 'remove' ) {\n\t\t\tthis.convertRemove( data.sourcePosition, data.range );\n\t\t} else if ( type == 'addAttribute' || type == 'removeAttribute' || type == 'changeAttribute' ) {\n\t\t\tthis.convertAttribute( type, data.range, data.key, data.oldValue, data.newValue );\n\t\t} else if ( type == 'rename' ) {\n\t\t\tthis.convertRename( data.element, data.oldName );\n\t\t}\n\t}\n\n\t/**\n\t * Starts conversion of insertion-change on given `range`.\n\t *\n\t * Analyzes given range and fires insertion-connected events with data based on that range.\n\t *\n\t * **Note**: This method will fire separate events for node insertion and attributes insertion. All\n\t * attributes that are set on inserted nodes are treated like they were added just after node insertion.\n\t *\n\t * @fires insert\n\t * @fires addAttribute\n\t * @fires addMarker\n\t * @param {module:engine/model/range~Range} range Inserted range.\n\t */\n\tconvertInsertion( range ) {\n\t\t// Create a list of things that can be consumed, consisting of nodes and their attributes.\n\t\tconst consumable = this._createInsertConsumable( range );\n\n\t\t// Fire a separate insert event for each node and text fragment contained in the range.\n\t\tfor ( let value of range ) {\n\t\t\tconst item = value.item;\n\t\t\tconst itemRange = Range.createFromPositionAndShift( value.previousPosition, value.length );\n\t\t\tconst data = {\n\t\t\t\titem: item,\n\t\t\t\trange: itemRange\n\t\t\t};\n\n\t\t\tthis._testAndFire( 'insert', data, consumable );\n\n\t\t\t// Fire a separate addAttribute event for each attribute that was set on inserted items.\n\t\t\t// This is important because most attributes converters will listen only to add/change/removeAttribute events.\n\t\t\t// If we would not add this part, attributes on inserted nodes would not be converted.\n\t\t\tfor ( let key of item.getAttributeKeys() ) {\n\t\t\t\tdata.attributeKey = key;\n\t\t\t\tdata.attributeOldValue = null;\n\t\t\t\tdata.attributeNewValue = item.getAttribute( key );\n\n\t\t\t\tthis._testAndFire( `addAttribute:${ key }`, data, consumable );\n\t\t\t}\n\t\t}\n\n\t\tfor ( let marker of this._modelDocument.markers ) {\n\t\t\tconst markerRange = marker.getRange();\n\n\t\t\t// Check if inserted content is inserted into a marker.\n\t\t\tif ( markerRange.containsPosition( range.start ) ) {\n\t\t\t\tthis.convertMarker( 'addMarker', marker.name, markerRange.getIntersection( range ) );\n\t\t\t}\n\n\t\t\t// Check if inserted content contains a marker.\n\t\t\tif ( range.containsRange( markerRange ) || range.isEqual( markerRange ) ) {\n\t\t\t\tthis.convertMarker( 'addMarker', marker.name, markerRange );\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Starts conversion of move-change of given `range`, that was moved from given `sourcePosition`.\n\t *\n\t * Fires {@link ~#event:remove remove event} and {@link ~#event:insert insert event} based on passed parameters.\n\t *\n\t * @fires remove\n\t * @fires insert\n\t * @param {module:engine/model/position~Position} sourcePosition The original position from which the range was moved.\n\t * @param {module:engine/model/range~Range} range The range containing the moved content.\n\t */\n\tconvertMove( sourcePosition, range ) {\n\t\tthis.convertRemove( sourcePosition, range );\n\t\tthis.convertInsertion( range );\n\t}\n\n\t/**\n\t * Starts conversion of remove-change of given `range`, that was removed from given `sourcePosition`.\n\t *\n\t * Fires {@link ~#event:remove remove event} with data based on passed values.\n\t *\n\t * @fires remove\n\t * @param {module:engine/model/position~Position} sourcePosition Position from where the range has been removed.\n\t * @param {module:engine/model/range~Range} range Removed range (after remove, in\n\t * {@link module:engine/model/document~Document#graveyard graveyard root}).\n\t */\n\tconvertRemove( sourcePosition, range ) {\n\t\tconst consumable = this._createConsumableForRange( range, 'remove' );\n\n\t\tfor ( let item of range.getItems( { shallow: true } ) ) {\n\t\t\tconst data = {\n\t\t\t\tsourcePosition: sourcePosition,\n\t\t\t\titem: item\n\t\t\t};\n\n\t\t\tthis._testAndFire( `remove`, data, consumable );\n\t\t}\n\t}\n\n\t/**\n\t * Starts conversion of attribute-change on given `range`.\n\t *\n\t * Analyzes given attribute change and fires attributes-connected events with data based on passed values.\n\t *\n\t * @fires addAttribute\n\t * @fires removeAttribute\n\t * @fires changeAttribute\n\t * @param {String} type Change type. Possible values: `addAttribute`, `removeAttribute`, `changeAttribute`.\n\t * @param {module:engine/model/range~Range} range Changed range.\n\t * @param {String} key Attribute key.\n\t * @param {*} oldValue Attribute value before the change or `null` if attribute has not been set.\n\t * @param {*} newValue New attribute value or `null` if attribute has been removed.\n\t */\n\tconvertAttribute( type, range, key, oldValue, newValue ) {\n\t\t// Create a list with attributes to consume.\n\t\tconst consumable = this._createConsumableForRange( range, type + ':' + key );\n\n\t\t// Create a separate attribute event for each node in the range.\n\t\tfor ( let value of range ) {\n\t\t\tconst item = value.item;\n\t\t\tconst itemRange = Range.createFromPositionAndShift( value.previousPosition, value.length );\n\t\t\tconst data = {\n\t\t\t\titem: item,\n\t\t\t\trange: itemRange,\n\t\t\t\tattributeKey: key,\n\t\t\t\tattributeOldValue: oldValue,\n\t\t\t\tattributeNewValue: newValue\n\t\t\t};\n\n\t\t\tthis._testAndFire( `${ type }:${ key }`, data, consumable );\n\t\t}\n\t}\n\n\t/**\n\t * Starts conversion of rename-change of given `element` that had given `oldName`.\n\t *\n\t * Fires {@link ~#event:remove remove event} and {@link ~#event:insert insert event} based on passed values.\n\t *\n\t * @fires remove\n\t * @fires insert\n\t * @param {module:engine/model/element~Element} element Renamed element.\n\t * @param {String} oldName Name of the renamed element before it was renamed.\n\t */\n\tconvertRename( element, oldName ) {\n\t\t// Create fake element that will be used to fire remove event. The fake element will have the old element name.\n\t\tconst fakeElement = element.clone( true );\n\t\tfakeElement.name = oldName;\n\n\t\t// Bind fake element with original view element so the view element will be removed.\n\t\tthis.conversionApi.mapper.bindElements(\n\t\t\tfakeElement,\n\t\t\tthis.conversionApi.mapper.toViewElement( element )\n\t\t);\n\n\t\t// Create fake document fragment so a range can be created on fake element.\n\t\tconst fakeDocumentFragment = new DocumentFragment();\n\t\tfakeDocumentFragment.appendChildren( fakeElement );\n\n\t\tthis.convertRemove( Position.createBefore( element ), Range.createOn( fakeElement ) );\n\t\tthis.convertInsertion( Range.createOn( element ) );\n\t}\n\n\t/**\n\t * Starts selection conversion.\n\t *\n\t * Fires events for given {@link module:engine/model/selection~Selection selection} to start selection conversion.\n\t *\n\t * @fires selection\n\t * @fires selectionAttribute\n\t * @param {module:engine/model/selection~Selection} selection Selection to convert.\n\t */\n\tconvertSelection( selection ) {\n\t\tconst markers = Array.from( this._modelDocument.markers.getMarkersAtPosition( selection.getFirstPosition() ) );\n\t\tconst consumable = this._createSelectionConsumable( selection, markers );\n\n\t\tthis.fire( 'selection', { selection }, consumable, this.conversionApi );\n\n\t\tfor ( let marker of markers ) {\n\t\t\tconst data = {\n\t\t\t\tselection: selection,\n\t\t\t\tname: marker.name\n\t\t\t};\n\n\t\t\tif ( consumable.test( selection, 'selectionMarker:' + marker.name ) ) {\n\t\t\t\tthis.fire( 'selectionMarker:' + marker.name, data, consumable, this.conversionApi );\n\t\t\t}\n\t\t}\n\n\t\tfor ( let key of selection.getAttributeKeys() ) {\n\t\t\tconst data = {\n\t\t\t\tselection: selection,\n\t\t\t\tkey: key,\n\t\t\t\tvalue: selection.getAttribute( key )\n\t\t\t};\n\n\t\t\t// Do not fire event if the attribute has been consumed.\n\t\t\tif ( consumable.test( selection, 'selectionAttribute:' + data.key ) ) {\n\t\t\t\tthis.fire( 'selectionAttribute:' + data.key, data, consumable, this.conversionApi );\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Starts marker-conversion.\n\t *\n\t * Fires {@link ~#event:addMarker addMarker event} or {@link ~#event:removeMarker removeMarker event} based on\n\t * given `type` with data based on passed parameters.\n\t *\n\t * @fires addMarker\n\t * @fires removeMarker\n\t * @param {'addMarker'|'removeMarker'} type Change type.\n\t * @param {String} name Marker name.\n\t * @param {module:engine/model/range~Range} range Marker range.\n\t */\n\tconvertMarker( type, name, range ) {\n\t\t// Do not convert if range is in graveyard or not in the document (e.g. in DocumentFragment).\n\t\tif ( !range.root.document || range.root.rootName == '$graveyard' ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst consumable = this._createMarkerConsumable( type, range );\n\t\tconst data = { name, range };\n\n\t\tthis.fire( type + ':' + name, data, consumable, this.conversionApi );\n\t}\n\n\t/**\n\t * Creates {@link module:engine/conversion/modelconsumable~ModelConsumable} with values to consume from given range, assuming that\n\t * given range has just been inserted to the model.\n\t *\n\t * @private\n\t * @param {module:engine/model/range~Range} range Inserted range.\n\t * @returns {module:engine/conversion/modelconsumable~ModelConsumable} Values to consume.\n\t */\n\t_createInsertConsumable( range ) {\n\t\tconst consumable = new Consumable();\n\n\t\tfor ( let value of range ) {\n\t\t\tconst item = value.item;\n\n\t\t\tconsumable.add( item, 'insert' );\n\n\t\t\tfor ( let key of item.getAttributeKeys() ) {\n\t\t\t\tconsumable.add( item, 'addAttribute:' + key );\n\t\t\t}\n\t\t}\n\n\t\treturn consumable;\n\t}\n\n\t/**\n\t * Creates {@link module:engine/conversion/modelconsumable~ModelConsumable} with values of given `type`\n\t * for each item from given `range`.\n\t *\n\t * @private\n\t * @param {module:engine/model/range~Range} range Affected range.\n\t * @param {String} type Consumable type.\n\t * @returns {module:engine/conversion/modelconsumable~ModelConsumable} Values to consume.\n\t */\n\t_createConsumableForRange( range, type ) {\n\t\tconst consumable = new Consumable();\n\n\t\tfor ( let item of range.getItems() ) {\n\t\t\tconsumable.add( item, type );\n\t\t}\n\n\t\treturn consumable;\n\t}\n\n\t/**\n\t * Creates {@link module:engine/conversion/modelconsumable~ModelConsumable} with selection consumable values.\n\t *\n\t * @private\n\t * @param {module:engine/model/selection~Selection} selection Selection to create consumable from.\n\t * @param {Iterable.<module:engine/model/markercollection~Marker>} markers Markers which contains selection.\n\t * @returns {module:engine/conversion/modelconsumable~ModelConsumable} Values to consume.\n\t */\n\t_createSelectionConsumable( selection, markers ) {\n\t\tconst consumable = new Consumable();\n\n\t\tconsumable.add( selection, 'selection' );\n\n\t\tfor ( let marker of markers ) {\n\t\t\tconsumable.add( selection, 'selectionMarker:' + marker.name );\n\t\t}\n\n\t\tfor ( let key of selection.getAttributeKeys() ) {\n\t\t\tconsumable.add( selection, 'selectionAttribute:' + key );\n\t\t}\n\n\t\treturn consumable;\n\t}\n\n\t/**\n\t * Creates {@link module:engine/conversion/modelconsumable~ModelConsumable} for adding or removing marker on given `range`.\n\t *\n\t * @private\n\t * @param {'addMarker'|'removeMarker'} type Change type.\n\t * @param {module:engine/model/range~Range} range Range on which marker was added or removed.\n\t * @returns {module:engine/conversion/modelconsumable~ModelConsumable} Values to consume.\n\t */\n\t_createMarkerConsumable( type, range ) {\n\t\tconst consumable = new Consumable();\n\n\t\tconsumable.add( range, type );\n\n\t\treturn consumable;\n\t}\n\n\t/**\n\t * Tests passed `consumable` to check whether given event can be fired and if so, fires it.\n\t *\n\t * @private\n\t * @fires insert\n\t * @fires remove\n\t * @fires addAttribute\n\t * @fires removeAttribute\n\t * @fires changeAttribute\n\t * @param {String} type Event type.\n\t * @param {Object} data Event data.\n\t * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n\t */\n\t_testAndFire( type, data, consumable ) {\n\t\tif ( !consumable.test( data.item, type ) ) {\n\t\t\t// Do not fire event if the item was consumed.\n\t\t\treturn;\n\t\t}\n\n\t\tconst name = data.item.name || '$text';\n\n\t\tthis.fire( type + ':' + name, data, consumable, this.conversionApi );\n\t}\n\n\t/**\n\t * Fired for inserted nodes.\n\t *\n\t * `insert` is a namespace for a class of events. Names of actually called events follow this pattern:\n\t * `insert:<name>`. `name` is either `'$text'` when one or more characters has been inserted or\n\t * {@link module:engine/model/element~Element#name name} of inserted element.\n\t *\n\t * This way listeners can either listen to a general `insert` event or specific event (for example `insert:paragraph`).\n\t *\n\t * @event insert\n\t * @param {Object} data Additional information about the change.\n\t * @param {module:engine/model/item~Item} data.item Inserted item.\n\t * @param {module:engine/model/range~Range} data.range Range spanning over inserted item.\n\t * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n\t * @param {Object} conversionApi Conversion interface to be used by callback, passed in `ModelConversionDispatcher` constructor.\n\t */\n\n\t/**\n\t * Fired for removed nodes.\n\t *\n\t * `remove` is a namespace for a class of events. Names of actually called events follow this pattern:\n\t * `remove:<name>`. `name` is either `'$text'` when one or more characters has been removed or the\n\t * {@link module:engine/model/element~Element#name name} of removed element.\n\t *\n\t * This way listeners can either listen to a general `remove` event or specific event (for example `remove:paragraph`).\n\t *\n\t * @event remove\n\t * @param {Object} data Additional information about the change.\n\t * @param {module:engine/model/position~Position} data.sourcePosition Position from where the range has been removed.\n\t * @param {module:engine/model/range~Range} data.range Removed range (in {@link module:engine/model/document~Document#graveyard\n\t * graveyard root}).\n\t * @param {Object} conversionApi Conversion interface to be used by callback, passed in `ModelConversionDispatcher` constructor.\n\t */\n\n\t/**\n\t * Fired when attribute has been added on a node.\n\t *\n\t * `addAttribute` is a namespace for a class of events. Names of actually called events follow this pattern:\n\t * `addAttribute:<attributeKey>:<name>`. `attributeKey` is the key of added attribute. `name` is either `'$text'`\n\t * if attribute was added on one or more characters, or the {@link module:engine/model/element~Element#name name} of\n\t * the element on which attribute was added.\n\t *\n\t * This way listeners can either listen to a general `addAttribute:bold` event or specific event\n\t * (for example `addAttribute:link:image`).\n\t *\n\t * @event addAttribute\n\t * @param {Object} data Additional information about the change.\n\t * @param {module:engine/model/item~Item} data.item Changed item.\n\t * @param {module:engine/model/range~Range} data.range Range spanning over changed item.\n\t * @param {String} data.attributeKey Attribute key.\n\t * @param {null} data.attributeOldValue Attribute value before the change - always `null`. Kept for the sake of unifying events.\n\t * @param {*} data.attributeNewValue New attribute value.\n\t * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n\t * @param {Object} conversionApi Conversion interface to be used by callback, passed in `ModelConversionDispatcher` constructor.\n\t */\n\n\t/**\n\t * Fired when attribute has been removed from a node.\n\t *\n\t * `removeAttribute` is a namespace for a class of events. Names of actually called events follow this pattern:\n\t * `removeAttribute:<attributeKey>:<name>`. `attributeKey` is the key of removed attribute. `name` is either `'$text'`\n\t * if attribute was removed from one or more characters, or the {@link module:engine/model/element~Element#name name} of\n\t * the element from which attribute was removed.\n\t *\n\t * This way listeners can either listen to a general `removeAttribute:bold` event or specific event\n\t * (for example `removeAttribute:link:image`).\n\t *\n\t * @event removeAttribute\n\t * @param {Object} data Additional information about the change.\n\t * @param {module:engine/model/item~Item} data.item Changed item.\n\t * @param {module:engine/model/range~Range} data.range Range spanning over changed item.\n\t * @param {String} data.attributeKey Attribute key.\n\t * @param {*} data.attributeOldValue Attribute value before it was removed.\n\t * @param {null} data.attributeNewValue New attribute value - always `null`. Kept for the sake of unifying events.\n\t * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n\t * @param {Object} conversionApi Conversion interface to be used by callback, passed in `ModelConversionDispatcher` constructor.\n\t */\n\n\t/**\n\t * Fired when attribute of a node has been changed.\n\t *\n\t * `changeAttribute` is a namespace for a class of events. Names of actually called events follow this pattern:\n\t * `changeAttribute:<attributeKey>:<name>`. `attributeKey` is the key of changed attribute. `name` is either `'$text'`\n\t * if attribute was changed on one or more characters, or the {@link module:engine/model/element~Element#name name} of\n\t * the element on which attribute was changed.\n\t *\n\t * This way listeners can either listen to a general `changeAttribute:link` event or specific event\n\t * (for example `changeAttribute:link:image`).\n\t *\n\t * @event changeAttribute\n\t * @param {Object} data Additional information about the change.\n\t * @param {module:engine/model/item~Item} data.item Changed item.\n\t * @param {module:engine/model/range~Range} data.range Range spanning over changed item.\n\t * @param {String} data.attributeKey Attribute key.\n\t * @param {*} data.attributeOldValue Attribute value before the change.\n\t * @param {*} data.attributeNewValue New attribute value.\n\t * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n\t * @param {Object} conversionApi Conversion interface to be used by callback, passed in `ModelConversionDispatcher` constructor.\n\t */\n\n\t/**\n\t * Fired for {@link module:engine/model/selection~Selection selection} changes.\n\t *\n\t * @event selection\n\t * @param {module:engine/model/selection~Selection} selection `Selection` instance that is converted.\n\t * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n\t * @param {Object} conversionApi Conversion interface to be used by callback, passed in `ModelConversionDispatcher` constructor.\n\t */\n\n\t/**\n\t * Fired for {@link module:engine/model/selection~Selection selection} attributes changes.\n\t *\n\t * `selectionAttribute` is a namespace for a class of events. Names of actually called events follow this pattern:\n\t * `selectionAttribute:<attributeKey>`. `attributeKey` is the key of selection attribute. This way listen can listen to\n\t * certain attribute, i.e. `addAttribute:bold`.\n\t *\n\t * @event selectionAttribute\n\t * @param {Object} data Additional information about the change.\n\t * @param {module:engine/model/selection~Selection} data.selection Selection that is converted.\n\t * @param {String} data.attributeKey Key of changed attribute.\n\t * @param {*} data.attributeValue Value of changed attribute.\n\t * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n\t * @param {Object} conversionApi Conversion interface to be used by callback, passed in `ModelConversionDispatcher` constructor.\n\t */\n\n\t/**\n\t * Fired when a new marker is added to the model.\n\t *\n\t * `addMarker` is a namespace for a class of events. Names of actually called events follow this pattern:\n\t * `addMarker:<markerName>`. By specifying certain marker names, you can make the events even more gradual. For example,\n\t * markers can be named `foo:abc`, `foo:bar`, then it is possible to listen to `addMarker:foo` or `addMarker:foo:abc` and\n\t * `addMarker:foo:bar` events.\n\t *\n\t * @event addMarker\n\t * @param {Object} data Additional information about the change.\n\t * @param {String} data.name Marker name.\n\t * @param {module:engine/model/range~Range} data.range Marker range.\n\t * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n\t * @param {Object} conversionApi Conversion interface to be used by callback, passed in `ModelConversionDispatcher` constructor.\n\t */\n\n\t/**\n\t * Fired when marker is removed from the model.\n\t *\n\t * `removeMarker` is a namespace for a class of events. Names of actually called events follow this pattern:\n\t * `removeMarker:<markerName>`. By specifying certain marker names, you can make the events even more gradual. For example,\n\t * markers can be named `foo:abc`, `foo:bar`, then it is possible to listen to `removeMarker:foo` or `removeMarker:foo:abc` and\n\t * `removeMarker:foo:bar` events.\n\t *\n\t * @event removeMarker\n\t * @param {Object} data Additional information about the change.\n\t * @param {String} data.name Marker name.\n\t * @param {module:engine/model/range~Range} data.range Marker range.\n\t * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n\t * @param {Object} conversionApi Conversion interface to be used by callback, passed in `ModelConversionDispatcher` constructor.\n\t */\n}\n\nmix( ModelConversionDispatcher, EmitterMixin );\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/conversion/modelconversiondispatcher.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/dataprocessor/htmldataprocessor\n */\n\n/* globals document, DOMParser */\n\nimport BasicHtmlWriter from './basichtmlwriter';\nimport DomConverter from '../view/domconverter';\nimport { NBSP_FILLER } from '../view/filler';\n\n/**\n * HtmlDataProcessor class.\n * This data processor implementation uses HTML as input/output data.\n *\n * @implements module:engine/dataprocessor/dataprocessor~DataProcessor\n */\nexport default class HtmlDataProcessor {\n\t/**\n\t * Creates a new instance of the HtmlDataProcessor class.\n\t */\n\tconstructor() {\n\t\t/**\n\t\t * DOMParser instance used to parse HTML string to HTMLDocument.\n\t\t *\n\t\t * @private\n\t\t * @member {DOMParser}\n\t\t */\n\t\tthis._domParser = new DOMParser();\n\n\t\t/**\n\t\t * DOM converter used to convert DOM elements to view elements.\n\t\t *\n\t\t * @private\n\t\t * @member\n\t\t */\n\t\tthis._domConverter = new DomConverter( { blockFiller: NBSP_FILLER } );\n\n\t\t/**\n\t\t * BasicHtmlWriter instance used to convert DOM elements to HTML string.\n\t\t *\n\t\t * @private\n\t\t * @member {module:engine/dataprocessor/basichtmlwriter~BasicHtmlWriter}\n\t\t */\n\t\tthis._htmlWriter = new BasicHtmlWriter();\n\t}\n\n\t/**\n\t * Converts provided {@link module:engine/view/documentfragment~DocumentFragment DocumentFragment}\n\t * to data format - in this case HTML string.\n\t *\n\t * @param {module:engine/view/documentfragment~DocumentFragment} viewFragment\n\t * @returns {String} HTML string.\n\t */\n\ttoData( viewFragment ) {\n\t\t// Convert view DocumentFragment to DOM DocumentFragment.\n\t\tconst domFragment = this._domConverter.viewToDom( viewFragment, document );\n\n\t\t// Convert DOM DocumentFragment to HTML output.\n\t\treturn this._htmlWriter.getHtml( domFragment );\n\t}\n\n\t/**\n\t * Converts provided HTML string to view tree.\n\t *\n\t * @param {String} data HTML string.\n\t * @returns {module:engine/view/node~Node|module:engine/view/documentfragment~DocumentFragment|null} Converted view element.\n\t */\n\ttoView( data ) {\n\t\t// Convert input HTML data to DOM DocumentFragment.\n\t\tconst domFragment = this._toDom( data );\n\n\t\t// Convert DOM DocumentFragment to view DocumentFragment.\n\t\treturn this._domConverter.domToView( domFragment );\n\t}\n\n\t/**\n\t * Converts HTML String to its DOM representation. Returns DocumentFragment, containing nodes parsed from\n\t * provided data.\n\t *\n\t * @private\n\t * @param {String} data\n\t * @returns {DocumentFragment}\n\t */\n\t_toDom( data ) {\n\t\tconst document = this._domParser.parseFromString( data, 'text/html' );\n\t\tconst fragment = document.createDocumentFragment();\n\t\tconst nodes = document.body.childNodes;\n\n\t\twhile ( nodes.length > 0 ) {\n\t\t\tfragment.appendChild( nodes[ 0 ] );\n\t\t}\n\n\t\treturn fragment;\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/dataprocessor/htmldataprocessor.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/delta/attributedelta\n */\n\nimport Delta from './delta';\nimport DeltaFactory from './deltafactory';\nimport { register } from '../batch';\nimport AttributeOperation from '../operation/attributeoperation';\nimport RootAttributeOperation from '../operation/rootattributeoperation';\nimport Position from '../position';\nimport Range from '../range';\n\n/**\n * To provide specific OT behavior and better collisions solving, methods to change attributes\n * ({@link module:engine/model/batch~Batch#setAttribute} and {@link module:engine/model/batch~Batch#removeAttribute})\n * use `AttributeDelta` class which inherits from the `Delta` class and may overwrite some methods.\n * @extends module:engine/model/delta/delta~Delta\n */\nexport default class AttributeDelta extends Delta {\n\t/**\n\t * @inheritDoc\n\t */\n\tget type() {\n\t\treturn 'attribute';\n\t}\n\n\t/**\n\t * The attribute key that is changed by the delta or `null` if the delta has no operations.\n\t *\n\t * @readonly\n\t * @type {String|null}\n\t */\n\tget key() {\n\t\treturn this.operations[ 0 ] ? this.operations[ 0 ].key : null;\n\t}\n\n\t/**\n\t * The attribute value that is set by the delta or `null` if the delta has no operations.\n\t *\n\t * @readonly\n\t * @type {*|null}\n\t */\n\tget value() {\n\t\treturn this.operations[ 0 ] ? this.operations[ 0 ].newValue : null;\n\t}\n\n\t/**\n\t * The range on which delta operates or `null` if the delta has no operations.\n\t *\n\t * @readonly\n\t * @type {module:engine/model/range~Range|null}\n\t */\n\tget range() {\n\t\t// Check if it is cached.\n\t\tif ( this._range ) {\n\t\t\treturn this._range;\n\t\t}\n\n\t\tlet start = null;\n\t\tlet end = null;\n\n\t\tfor ( let operation of this.operations ) {\n\t\t\tif ( start === null || start.isAfter( operation.range.start ) ) {\n\t\t\t\tstart = operation.range.start;\n\t\t\t}\n\n\t\t\tif ( end === null || end.isBefore( operation.range.end ) ) {\n\t\t\t\tend = operation.range.end;\n\t\t\t}\n\t\t}\n\n\t\tif ( start && end ) {\n\t\t\tthis._range = new Range( start, end );\n\n\t\t\treturn this._range;\n\t\t}\n\n\t\treturn null;\n\t}\n\n\tget _reverseDeltaClass() {\n\t\treturn AttributeDelta;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.delta.AttributeDelta';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get _priority() {\n\t\treturn 20;\n\t}\n}\n\n/**\n * To provide specific OT behavior and better collisions solving, methods to change attributes\n * ({@link module:engine/model/batch~Batch#setAttribute} and {@link module:engine/model/batch~Batch#removeAttribute})\n * use `RootAttributeDelta` class which inherits from the `Delta` class and may\n * overwrite some methods.\n *\n * @extends module:engine/model/delta/delta~Delta\n */\nexport class RootAttributeDelta extends Delta {\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.delta.RootAttributeDelta';\n\t}\n}\n\n/**\n * Sets value of the attribute with given key on a {@link module:engine/model/item~Item model item}\n * or on a {@link module:engine/model/range~Range range}.\n *\n * @chainable\n * @method module:engine/model/batch~Batch#setAttribute\n * @param {module:engine/model/item~Item|module:engine/model/range~Range} itemOrRange\n * Model item or range on which the attribute will be set.\n * @param {String} key Attribute key.\n * @param {*} value Attribute new value.\n */\nregister( 'setAttribute', function( itemOrRange, key, value ) {\n\tattribute( this, key, value, itemOrRange );\n\n\treturn this;\n} );\n\n/**\n * Removes an attribute with given key from a {@link module:engine/model/item~Item model item}\n * or from a {@link module:engine/model/range~Range range}.\n *\n * @chainable\n * @param {module:engine/model/item~Item|module:engine/model/range~Range} itemOrRange\n * Model item or range from which the attribute will be removed.\n * @method module:engine/model/batch~Batch#removeAttribute\n * @param {String} key Attribute key.\n */\nregister( 'removeAttribute', function( itemOrRange, key ) {\n\tattribute( this, key, null, itemOrRange );\n\n\treturn this;\n} );\n\nfunction attribute( batch, key, value, itemOrRange ) {\n\tif ( itemOrRange instanceof Range ) {\n\t\tchangeRange( batch, batch.document, key, value, itemOrRange );\n\t} else {\n\t\tchangeItem( batch, batch.document, key, value, itemOrRange );\n\t}\n}\n\nfunction changeItem( batch, doc, key, value, item ) {\n\tconst previousValue = item.getAttribute( key );\n\tlet range, operation;\n\n\tconst delta = item.is( 'rootElement' ) ? new RootAttributeDelta() : new AttributeDelta();\n\tbatch.addDelta( delta );\n\n\tif ( previousValue != value ) {\n\t\tif ( item.is( 'rootElement' ) ) {\n\t\t\t// If we change attributes of root element, we have to use `RootAttributeOperation`.\n\t\t\toperation = new RootAttributeOperation( item, key, previousValue, value, doc.version );\n\t\t} else {\n\t\t\tif ( item.is( 'element' ) ) {\n\t\t\t\t// If we change the attribute of the element, we do not want to change attributes of its children, so\n\t\t\t\t// the end of the range cannot be after the closing tag, it should be inside that element, before any of\n\t\t\t\t// it's children, so the range will contain only the opening tag.\n\t\t\t\trange = new Range( Position.createBefore( item ), Position.createFromParentAndOffset( item, 0 ) );\n\t\t\t} else {\n\t\t\t\t// If `item` is text proxy, we create a range from the beginning to the end of that text proxy, to change\n\t\t\t\t// all characters represented by it.\n\t\t\t\trange = new Range( Position.createBefore( item ), Position.createAfter( item ) );\n\t\t\t}\n\n\t\t\toperation = new AttributeOperation( range, key, previousValue, value, doc.version );\n\t\t}\n\n\t\tdelta.addOperation( operation );\n\t\tdoc.applyOperation( operation );\n\t}\n}\n\n// Because attribute operation needs to have the same attribute value on the whole range, this function splits the range\n// into smaller parts.\nfunction changeRange( batch, doc, attributeKey, attributeValue, range ) {\n\tconst delta = new AttributeDelta();\n\tbatch.addDelta( delta );\n\n\t// Position of the last split, the beginning of the new range.\n\tlet lastSplitPosition = range.start;\n\n\t// Currently position in the scanning range. Because we need value after the position, it is not a current\n\t// position of the iterator but the previous one (we need to iterate one more time to get the value after).\n\tlet position;\n\t// Value before the currently position.\n\tlet attributeValueBefore;\n\t// Value after the currently position.\n\tlet attributeValueAfter;\n\n\tfor ( let value of range ) {\n\t\tattributeValueAfter = value.item.getAttribute( attributeKey );\n\n\t\t// At the first run of the iterator the position in undefined. We also do not have a attributeValueBefore, but\n\t\t// because attributeValueAfter may be null, attributeValueBefore may be equal attributeValueAfter ( undefined == null ).\n\t\tif ( position && attributeValueBefore != attributeValueAfter ) {\n\t\t\t// if attributeValueBefore == attributeValue there is nothing to change, so we add operation only if these values are different.\n\t\t\tif ( attributeValueBefore != attributeValue ) {\n\t\t\t\taddOperation();\n\t\t\t}\n\n\t\t\tlastSplitPosition = position;\n\t\t}\n\n\t\tposition = value.nextPosition;\n\t\tattributeValueBefore = attributeValueAfter;\n\t}\n\n\t// Because position in the loop is not the iterator position (see let position comment), the last position in\n\t// the while loop will be last but one position in the range. We need to check the last position manually.\n\tif ( position instanceof Position && position != lastSplitPosition && attributeValueBefore != attributeValue ) {\n\t\taddOperation();\n\t}\n\n\tfunction addOperation() {\n\t\tlet range = new Range( lastSplitPosition, position );\n\t\tconst operation = new AttributeOperation( range, attributeKey, attributeValueBefore, attributeValue, doc.version );\n\n\t\tdelta.addOperation( operation );\n\t\tdoc.applyOperation( operation );\n\t}\n}\n\nDeltaFactory.register( AttributeDelta );\nDeltaFactory.register( RootAttributeDelta );\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/delta/attributedelta.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/delta/renamedelta\n */\n\nimport Delta from './delta';\nimport DeltaFactory from './deltafactory';\nimport { register } from '../batch';\nimport RenameOperation from '../operation/renameoperation';\nimport Element from '../element';\nimport Position from '../position';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/**\n * To provide specific OT behavior and better collisions solving, the {@link module:engine/model/batch~Batch#rename Batch#rename} method\n * uses the `RenameDelta` class which inherits from the `Delta` class and may overwrite some methods.\n */\nexport default class RenameDelta extends Delta {\n\t/**\n\t * @inheritDoc\n\t */\n\tget type() {\n\t\treturn 'rename';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tget _reverseDeltaClass() {\n\t\treturn RenameDelta;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.delta.RenameDelta';\n\t}\n}\n\nfunction apply( batch, delta, operation ) {\n\tdelta.addOperation( operation );\n\tbatch.document.applyOperation( operation );\n}\n\n/**\n * Renames given element.\n *\n * @chainable\n * @method module:engine/model/batch~Batch#rename\n * @param {module:engine/model/element~Element} element The element to rename.\n * @param {String} newName New element name.\n */\nregister( 'rename', function( element, newName ) {\n\tif ( !( element instanceof Element ) ) {\n\t\t/**\n\t\t * Trying to rename an object which is not an instance of Element.\n\t\t *\n\t\t * @error batch-rename-not-element-instance\n\t\t */\n\t\tthrow new CKEditorError( 'batch-rename-not-element-instance: Trying to rename an object which is not an instance of Element.' );\n\t}\n\n\tconst delta = new RenameDelta();\n\tthis.addDelta( delta );\n\n\tapply(\n\t\tthis, delta,\n\t\tnew RenameOperation( Position.createBefore( element ), element.name, newName, this.document.version )\n\t);\n\n\treturn this;\n} );\n\nDeltaFactory.register( RenameDelta );\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/delta/renamedelta.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/delta/weakinsertdelta\n */\n\nimport InsertDelta from './insertdelta';\nimport { register } from '../batch';\nimport DeltaFactory from './deltafactory';\nimport InsertOperation from '../operation/insertoperation';\nimport { normalizeNodes } from './../writer';\n\n/**\n * @classdesc\n * To provide specific OT behavior and better collisions solving, the {@link module:engine/model/batch~Batch#insert} method\n * uses the `WeakInsertDelta` class which inherits from the `Delta` class and may overwrite some methods.\n */\nexport default class WeakInsertDelta extends InsertDelta {\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.delta.WeakInsertDelta';\n\t}\n}\n\n/**\n * Inserts a node or nodes at given position. {@link module:engine/model/batch~Batch#weakInsert weakInsert} is commonly used for actions\n * like typing or plain-text paste (without formatting). There are two differences between\n * {@link module:engine/model/batch~Batch#insert insert} and {@link module:engine/model/batch~Batch#weakInsert weakInsert}:\n *\n * * When using `weakInsert`, inserted nodes will have same attributes as the current attributes of\n * {@link module:engine/model/document~Document#selection document selection}.\n * * If {@link module:engine/model/operation/insertoperation~InsertOperation insert operation} position is inside a range changed by\n * {@link module:engine/model/operation/attributeoperation~AttributeOperation attribute operation},\n * the attribute operation is split into two operations.\n * Thanks to this, attribute change \"omits\" the inserted nodes. The correct behavior for `WeakInsertDelta` is that\n * {@link module:engine/model/operation/attributeoperation~AttributeOperation AttributeOperation} does not \"break\" and also\n * applies attributes for inserted nodes. This behavior has to be reflected during\n * {@link module:engine/model/delta/transform~transform delta transformation}.\n *\n * @chainable\n * @method module:engine/model/batch~Batch#weakInsert\n * @param {module:engine/model/position~Position} position Position of insertion.\n * @param {module:engine/model/node~NodeSet} nodes The list of nodes to be inserted.\n */\nregister( 'weakInsert', function( position, nodes ) {\n\tconst delta = new WeakInsertDelta();\n\tthis.addDelta( delta );\n\n\tnodes = normalizeNodes( nodes );\n\n\tfor ( let node of nodes ) {\n\t\tnode.setAttributesTo( this.document.selection.getAttributes() );\n\t}\n\n\tconst operation = new InsertOperation( position, nodes, this.document.version );\n\tdelta.addOperation( operation );\n\tthis.document.applyOperation( operation );\n\n\treturn this;\n} );\n\nDeltaFactory.register( WeakInsertDelta );\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/delta/weakinsertdelta.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/liveposition\n */\n\nimport Position from './position';\nimport Range from './range';\nimport EmitterMixin from '@ckeditor/ckeditor5-utils/src/emittermixin';\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/**\n * `LivePosition` is a type of {@link module:engine/model/position~Position Position}\n * that updates itself as {@link module:engine/model/document~Document document}\n * is changed through operations. It may be used as a bookmark.\n *\n * **Note:** Contrary to {@link module:engine/model/position~Position}, `LivePosition` works only in roots that are\n * {@link module:engine/model/rootelement~RootElement}.\n * If {@link module:engine/model/documentfragment~DocumentFragment} is passed, error will be thrown.\n *\n * **Note:** Be very careful when dealing with `LivePosition`. Each `LivePosition` instance bind events that might\n * have to be unbound.\n * Use {@link module:engine/model/liveposition~LivePosition#detach} whenever you don't need `LivePosition` anymore.\n *\n * @extends module:engine/model/position~Position\n */\nexport default class LivePosition extends Position {\n\t/**\n\t * Creates a live position.\n\t *\n\t * @see module:engine/model/position~Position\n\t * @param {module:engine/model/rootelement~RootElement} root\n\t * @param {Array.<Number>} path\n\t * @param {module:engine/model/position~PositionStickiness} [stickiness] Defaults to `'sticksToNext'`.\n\t * See {@link module:engine/model/liveposition~LivePosition#stickiness}.\n\t */\n\tconstructor( root, path, stickiness ) {\n\t\tsuper( root, path );\n\n\t\tif ( !this.root.is( 'rootElement' ) ) {\n\t\t\t/**\n\t\t\t * LivePosition root has to be an instance of RootElement.\n\t\t\t *\n\t\t\t * @error liveposition-root-not-rootelement\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'model-liveposition-root-not-rootelement: LivePosition root has to be an instance of RootElement.' );\n\t\t}\n\n\t\t/**\n\t\t * Flag representing `LivePosition` stickiness. `LivePosition` might be sticking to previous node or next node.\n\t\t * Whenever some nodes are inserted at the same position as `LivePosition`, `stickiness` is checked to decide if\n\t\t * LivePosition should be moved. Similar applies when a range of nodes is moved and one of it's boundary\n\t\t * position is same as `LivePosition`.\n\t\t *\n\t\t * Examples:\n\t\t *\n\t\t *\t\tInsert:\n\t\t *\t\tPosition is at | and we insert at the same position, marked as ^:\n\t\t *\t\t- | sticks to previous node: `<p>f|^oo</p>` => `<p>f|baroo</p>`\n\t\t *\t\t- | sticks to next node: `<p>f^|oo</p>` => `<p>fbar|oo</p>`\n\t\t *\n\t\t *\t\tMove:\n\t\t *\t\tPosition is at | and range [ ] is moved to position ^:\n\t\t *\t\t- | sticks to previous node: `<p>f|[oo]</p><p>b^ar</p>` => `<p>f|</p><p>booar</p>`\n\t\t *\t\t- | sticks to next node: `<p>f|[oo]</p><p>b^ar</p>` => `<p>f</p><p>b|ooar</p>`\n\t\t *\n\t\t * @member {module:engine/model/position~PositionStickiness} module:engine/model/liveposition~LivePosition#stickiness\n\t\t */\n\t\tthis.stickiness = stickiness || 'sticksToNext';\n\n\t\tbindWithDocument.call( this );\n\t}\n\n\t/**\n\t * Unbinds all events previously bound by `LivePosition`. Use it whenever you don't need `LivePosition` instance\n\t * anymore (i.e. when leaving scope in which it was declared or before re-assigning variable that was\n\t * referring to it).\n\t */\n\tdetach() {\n\t\tthis.stopListening();\n\t}\n\n\t/**\n\t * @static\n\t * @method module:engine/model/liveposition~LivePosition.createAfter\n\t * @see module:engine/model/position~Position.createAfter\n\t * @param {module:engine/model/node~Node} node\n\t * @returns {module:engine/model/liveposition~LivePosition}\n\t */\n\n\t/**\n\t * @static\n\t * @method module:engine/model/liveposition~LivePosition.createBefore\n\t * @see module:engine/model/position~Position.createBefore\n\t * @param {module:engine/model/node~Node} node\n\t * @returns {module:engine/model/liveposition~LivePosition}\n\t */\n\n\t/**\n\t * @static\n\t * @method module:engine/model/liveposition~LivePosition.createFromParentAndOffset\n\t * @see module:engine/model/position~Position.createFromParentAndOffset\n\t * @param {module:engine/model/element~Element} parent\n\t * @param {Number} offset\n\t * @returns {module:engine/model/liveposition~LivePosition}\n\t */\n\n\t/**\n\t * @static\n\t * @method module:engine/model/liveposition~LivePosition.createFromPosition\n\t * @see module:engine/model/position~Position.createFromPosition\n\t * @param {module:engine/model/position~Position} position\n\t * @returns {module:engine/model/liveposition~LivePosition}\n\t */\n\n\t/**\n\t * Fired when `LivePosition` instance is changed due to changes on {@link module:engine/model/document~Document}.\n\t *\n\t * @event module:engine/model/liveposition~LivePosition#change\n\t * @param {module:engine/model/position~Position} oldPosition Position equal to this live position before it got changed.\n\t */\n}\n\n/**\n * Binds this `LivePosition` to the {@link module:engine/model/document~Document document} that owns\n * this position's {@link module:engine/model/position~Position#root root}.\n *\n * @ignore\n * @private\n * @method module:engine/model/liveposition~LivePosition.bindWithDocument\n */\nfunction bindWithDocument() {\n\t/*jshint validthis: true */\n\t// Operation types handled by LivePosition (these are operations that change model tree structure).\n\tconst supportedTypes = new Set( [ 'insert', 'move', 'remove', 'reinsert' ] );\n\n\tthis.listenTo(\n\t\tthis.root.document,\n\t\t'change',\n\t\t( event, type, changes ) => {\n\t\t\tif ( supportedTypes.has( type ) ) {\n\t\t\t\ttransform.call( this, type, changes.range, changes.sourcePosition );\n\t\t\t}\n\t\t},\n\t\t{ priority: 'high' }\n\t);\n}\n\n/**\n * Updates this position accordingly to the updates applied to the model. Bases on change events.\n *\n * @ignore\n * @private\n * @method transform\n * @param {String} type Type of changes applied to the Tree Model.\n * @param {module:engine/model/range~Range} range Range containing the result of applied change.\n * @param {module:engine/model/position~Position} [position] Additional position parameter provided by some change events.\n */\nfunction transform( type, range, position ) {\n\t/*jshint validthis: true */\n\n\tlet howMany = range.end.offset - range.start.offset;\n\tlet transformed;\n\n\tswitch ( type ) {\n\t\tcase 'insert':\n\t\t\tlet insertBefore = this.stickiness == 'sticksToNext';\n\t\t\ttransformed = this._getTransformedByInsertion( range.start, howMany, insertBefore );\n\t\t\tbreak;\n\n\t\tcase 'move':\n\t\tcase 'remove':\n\t\tcase 'reinsert':\n\t\t\tlet originalRange = Range.createFromPositionAndShift( position, howMany );\n\n\t\t\tlet gotMoved = originalRange.containsPosition( this ) ||\n\t\t\t\t( originalRange.start.isEqual( this ) && this.stickiness == 'sticksToNext' ) ||\n\t\t\t\t( originalRange.end.isEqual( this ) && this.stickiness == 'sticksToPrevious' );\n\n\t\t\t// We can't use ._getTransformedByMove() because we have a different if-condition.\n\t\t\tif ( gotMoved ) {\n\t\t\t\ttransformed = this._getCombined( position, range.start );\n\t\t\t} else {\n\t\t\t\tlet insertBefore = this.stickiness == 'sticksToNext';\n\t\t\t\ttransformed = this._getTransformedByMove( position, range.start, howMany, insertBefore );\n\t\t\t}\n\t\t\tbreak;\n\t}\n\n\tif ( !this.isEqual( transformed ) ) {\n\t\tconst oldPosition = Position.createFromPosition( this );\n\n\t\tthis.path = transformed.path;\n\t\tthis.root = transformed.root;\n\n\t\tthis.fire( 'change', oldPosition );\n\t}\n}\n\nmix( LivePosition, EmitterMixin );\n\n/**\n * Enum representing how position is \"sticking\" with their neighbour nodes.\n * Possible values: `'sticksToNext'`, `'sticksToPrevious'`.\n *\n * @typedef {String} module:engine/model/position~PositionStickiness\n */\n\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/liveposition.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/rootelement\n */\n\nimport Element from './element';\n\n/**\n * Type of {@link module:engine/model/element~Element} that is a root of a model tree.\n * @extends module:engine/model/element~Element\n */\nexport default class RootElement extends Element {\n\t/**\n\t * Creates root element.\n\t *\n\t * @param {module:engine/model/document~Document} doc Document that is an owner of this root.\n\t * @param {String} name Node name.\n\t * @param {String} [rootName='main'] Unique root name used to identify this root element by {@link module:engine/model/document~Document}.\n\t */\n\tconstructor( doc, name, rootName = 'main' ) {\n\t\tsuper( name );\n\n\t\t/**\n\t\t * Document that is an owner of this root.\n\t\t *\n\t\t * @private\n\t\t * @member {module:engine/model/document~Document}\n\t\t */\n\t\tthis._doc = doc;\n\n\t\t/**\n\t\t * Unique root name used to identify this root element by {@link module:engine/model/document~Document}.\n\t\t *\n\t\t * @readonly\n\t\t * @member {String}\n\t\t */\n\t\tthis.rootName = rootName;\n\t}\n\n\t/**\n\t * {@link module:engine/model/document~Document Document} that owns this root element.\n\t *\n\t * In contrary, to {@link module:engine/model/node~Node node}, root element always have a `document`.\n\t *\n\t * @readonly\n\t * @type {module:engine/model/document~Document|null}\n\t */\n\tget document() {\n\t\treturn this._doc;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tis( type, name ) {\n\t\tif ( !name ) {\n\t\t\treturn type == 'rootElement' || super.is( type );\n\t\t} else {\n\t\t\treturn ( type == 'rootElement' && name == this.name ) || super.is( type, name );\n\t\t}\n\t}\n\n\t/**\n\t * Converts `RootElement` instance to `String` containing it's name.\n\t *\n\t * @returns {String} `RootElement` instance converted to `String`.\n\t */\n\ttoJSON() {\n\t\treturn this.rootName;\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/rootelement.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/domconverter\n */\n\n/* globals Range, Node, NodeFilter */\n\nimport ViewText from './text';\nimport ViewElement from './element';\nimport ViewPosition from './position';\nimport ViewRange from './range';\nimport ViewSelection from './selection';\nimport ViewDocumentFragment from './documentfragment';\nimport ViewTreeWalker from './treewalker';\nimport { BR_FILLER, INLINE_FILLER_LENGTH, isBlockFiller, isInlineFiller, startsWithFiller, getDataWithoutFiller } from './filler';\n\nimport indexOf from '@ckeditor/ckeditor5-utils/src/dom/indexof';\nimport getAncestors from '@ckeditor/ckeditor5-utils/src/dom/getancestors';\nimport getCommonAncestor from '@ckeditor/ckeditor5-utils/src/dom/getcommonancestor';\n\n/**\n * DomConverter is a set of tools to do transformations between DOM nodes and view nodes. It also handles\n * {@link module:engine/view/domconverter~DomConverter#bindElements binding} these nodes.\n *\n * DomConverter does not check which nodes should be rendered (use {@link module:engine/view/renderer~Renderer}), does not keep a\n * state of a tree nor keeps synchronization between tree view and DOM tree (use {@link module:engine/view/document~Document}).\n *\n * DomConverter keeps DOM elements to View element bindings, so when the converter will be destroyed, the binding will\n * be lost. Two converters will keep separate binding maps, so one tree view can be bound with two DOM trees.\n */\nexport default class DomConverter {\n\t/**\n\t * Creates DOM converter.\n\t *\n\t * @param {Object} options Object with configuration options.\n\t * @param {Function} [options.blockFiller=module:engine/view/filler~BR_FILLER] Block filler creator.\n\t */\n\tconstructor( options = {} ) {\n\t\t// Using WeakMap prevent memory leaks: when the converter will be destroyed all referenced between View and DOM\n\t\t// will be removed. Also because it is a *Weak*Map when both view and DOM elements will be removed referenced\n\t\t// will be also removed, isn't it brilliant?\n\t\t//\n\t\t// Yes, PJ. It is.\n\t\t//\n\t\t// You guys so smart.\n\t\t//\n\t\t// I've been here. Seen stuff. Afraid of code now.\n\n\t\t/**\n\t\t * Block {@link module:engine/view/filler filler} creator, which is used to create all block fillers during the\n\t\t * view to DOM conversion and to recognize block fillers during the DOM to view conversion.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Function} module:engine/view/domconverter~DomConverter#blockFiller\n\t\t */\n\t\tthis.blockFiller = options.blockFiller || BR_FILLER;\n\n\t\t/**\n\t\t * Tag names of DOM `Element`s which are considered pre-formatted elements.\n\t\t *\n\t\t * @member {Array.<String>} module:engine/view/domconverter~DomConverter#preElements\n\t\t */\n\t\tthis.preElements = [ 'pre' ];\n\n\t\t/**\n\t\t * Tag names of DOM `Element`s which are considered block elements.\n\t\t *\n\t\t * @member {Array.<String>} module:engine/view/domconverter~DomConverter#blockElements\n\t\t */\n\t\tthis.blockElements = [ 'p', 'div', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6' ];\n\n\t\t/**\n\t\t * DOM to View mapping.\n\t\t *\n\t\t * @private\n\t\t * @member {WeakMap} module:engine/view/domconverter~DomConverter#_domToViewMapping\n\t\t */\n\t\tthis._domToViewMapping = new WeakMap();\n\n\t\t/**\n\t\t * View to DOM mapping.\n\t\t *\n\t\t * @private\n\t\t * @member {WeakMap} module:engine/view/domconverter~DomConverter#_viewToDomMapping\n\t\t */\n\t\tthis._viewToDomMapping = new WeakMap();\n\n\t\t/**\n\t\t * Holds mapping between fake selection containers and corresponding view selections.\n\t\t *\n\t\t * @private\n\t\t * @member {WeakMap} module:engine/view/domconverter~DomConverter#_fakeSelectionMapping\n\t\t */\n\t\tthis._fakeSelectionMapping = new WeakMap();\n\t}\n\n\t/**\n\t * Binds given DOM element that represents fake selection to {@link module:engine/view/selection~Selection view selection}.\n\t * View selection copy is stored and can be retrieved by {@link module:engine/view/domconverter~DomConverter#fakeSelectionToView} method.\n\t *\n\t * @param {HTMLElement} domElement\n\t * @param {module:engine/view/selection~Selection} viewSelection\n\t */\n\tbindFakeSelection( domElement, viewSelection ) {\n\t\tthis._fakeSelectionMapping.set( domElement, ViewSelection.createFromSelection( viewSelection ) );\n\t}\n\n\t/**\n\t * Returns {@link module:engine/view/selection~Selection view selection} instance corresponding to given DOM element that represents fake\n\t * selection. Returns `undefined` if binding to given DOM element does not exists.\n\t *\n\t * @param {HTMLElement} domElement\n\t * @returns {module:engine/view/selection~Selection|undefined}\n\t */\n\tfakeSelectionToView( domElement ) {\n\t\treturn this._fakeSelectionMapping.get( domElement );\n\t}\n\n\t/**\n\t * Binds DOM and View elements, so it will be possible to get corresponding elements using\n\t * {@link module:engine/view/domconverter~DomConverter#getCorrespondingViewElement getCorrespondingViewElement} and\n\t * {@link module:engine/view/domconverter~DomConverter#getCorrespondingDomElement getCorrespondingDomElement}.\n\t *\n\t * @param {HTMLElement} domElement DOM element to bind.\n\t * @param {module:engine/view/element~Element} viewElement View element to bind.\n\t */\n\tbindElements( domElement, viewElement ) {\n\t\tthis._domToViewMapping.set( domElement, viewElement );\n\t\tthis._viewToDomMapping.set( viewElement, domElement );\n\t}\n\n\t/**\n\t * Binds DOM and View document fragments, so it will be possible to get corresponding document fragments using\n\t * {@link module:engine/view/domconverter~DomConverter#getCorrespondingViewDocumentFragment getCorrespondingViewDocumentFragment} and\n\t * {@link module:engine/view/domconverter~DomConverter#getCorrespondingDomDocumentFragment getCorrespondingDomDocumentFragment}.\n\t *\n\t * @param {DocumentFragment} domFragment DOM document fragment to bind.\n\t * @param {module:engine/view/documentfragment~DocumentFragment} viewFragment View document fragment to bind.\n\t */\n\tbindDocumentFragments( domFragment, viewFragment ) {\n\t\tthis._domToViewMapping.set( domFragment, viewFragment );\n\t\tthis._viewToDomMapping.set( viewFragment, domFragment );\n\t}\n\n\t/**\n\t * Converts view to DOM. For all text nodes, not bound elements and document fragments new items will\n\t * be created. For bound elements and document fragments function will return corresponding items.\n\t *\n\t * @param {module:engine/view/node~Node|module:engine/view/documentfragment~DocumentFragment} viewNode View node or document fragment to\n\t * transform.\n\t * @param {Document} domDocument Document which will be used to create DOM nodes.\n\t * @param {Object} [options] Conversion options.\n\t * @param {Boolean} [options.bind=false] Determines whether new elements will be bound.\n\t * @param {Boolean} [options.withChildren=true] If true node's and document fragment's children  will be converted too.\n\t * @returns {Node|DocumentFragment} Converted node or DocumentFragment.\n\t */\n\tviewToDom( viewNode, domDocument, options = {} ) {\n\t\tif ( viewNode.is( 'text' ) ) {\n\t\t\tconst textData = this._processDataFromViewText( viewNode );\n\n\t\t\treturn domDocument.createTextNode( textData );\n\t\t} else {\n\t\t\tif ( this.getCorrespondingDom( viewNode ) ) {\n\t\t\t\treturn this.getCorrespondingDom( viewNode );\n\t\t\t}\n\n\t\t\tlet domElement;\n\n\t\t\tif ( viewNode.is( 'documentFragment' ) ) {\n\t\t\t\t// Create DOM document fragment.\n\t\t\t\tdomElement = domDocument.createDocumentFragment();\n\n\t\t\t\tif ( options.bind ) {\n\t\t\t\t\tthis.bindDocumentFragments( domElement, viewNode );\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\t// Create DOM element.\n\t\t\t\tdomElement = domDocument.createElement( viewNode.name );\n\n\t\t\t\tif ( options.bind ) {\n\t\t\t\t\tthis.bindElements( domElement, viewNode );\n\t\t\t\t}\n\n\t\t\t\t// Copy element's attributes.\n\t\t\t\tfor ( let key of viewNode.getAttributeKeys() ) {\n\t\t\t\t\tdomElement.setAttribute( key, viewNode.getAttribute( key ) );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tif ( options.withChildren || options.withChildren === undefined ) {\n\t\t\t\tfor ( let child of this.viewChildrenToDom( viewNode, domDocument, options ) ) {\n\t\t\t\t\tdomElement.appendChild( child );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn domElement;\n\t\t}\n\t}\n\n\t/**\n\t * Converts children of the view element to DOM using {@link module:engine/view/domconverter~DomConverter#viewToDom} method.\n\t * Additionally this method adds block {@link module:engine/view/filler filler} to the list of children, if needed.\n\t *\n\t * @param {module:engine/view/element~Element|module:engine/view/documentfragment~DocumentFragment} viewElement Parent view element.\n\t * @param {Document} domDocument Document which will be used to create DOM nodes.\n\t * @param {Object} options See {@link module:engine/view/domconverter~DomConverter#viewToDom} options parameter.\n\t * @returns {Iterable.<Node>} DOM nodes.\n\t */\n\t*viewChildrenToDom( viewElement, domDocument, options = {} ) {\n\t\tlet fillerPositionOffset = viewElement.getFillerOffset && viewElement.getFillerOffset();\n\t\tlet offset = 0;\n\n\t\tfor ( let childView of viewElement.getChildren() ) {\n\t\t\tif ( fillerPositionOffset === offset ) {\n\t\t\t\tyield this.blockFiller( domDocument );\n\t\t\t}\n\n\t\t\tyield this.viewToDom( childView, domDocument, options );\n\n\t\t\toffset++;\n\t\t}\n\n\t\tif ( fillerPositionOffset === offset ) {\n\t\t\tyield this.blockFiller( domDocument );\n\t\t}\n\t}\n\n\t/**\n\t * Converts view {@link module:engine/view/range~Range} to DOM range.\n\t * Inline and block {@link module:engine/view/filler fillers} are handled during the conversion.\n\t *\n\t * @param {module:engine/view/range~Range} viewRange View range.\n\t * @returns {Range} DOM range.\n\t */\n\tviewRangeToDom( viewRange ) {\n\t\tconst domStart = this.viewPositionToDom( viewRange.start );\n\t\tconst domEnd = this.viewPositionToDom( viewRange.end );\n\n\t\tconst domRange = new Range();\n\t\tdomRange.setStart( domStart.parent, domStart.offset );\n\t\tdomRange.setEnd( domEnd.parent, domEnd.offset );\n\n\t\treturn domRange;\n\t}\n\n\t/**\n\t * Converts view {@link module:engine/view/position~Position} to DOM parent and offset.\n\t *\n\t * Inline and block {@link module:engine/view/filler fillers} are handled during the conversion.\n\t * If the converted position is directly before inline filler it is moved inside the filler.\n\t *\n\t * @param {module:engine/view/position~Position} viewPosition View position.\n\t * @returns {Object|null} position DOM position or `null` if view position could not be converted to DOM.\n\t * @returns {Node} position.parent DOM position parent.\n\t * @returns {Number} position.offset DOM position offset.\n\t */\n\tviewPositionToDom( viewPosition ) {\n\t\tconst viewParent = viewPosition.parent;\n\n\t\tif ( viewParent.is( 'text' ) ) {\n\t\t\tconst domParent = this.getCorrespondingDomText( viewParent );\n\n\t\t\tif ( !domParent ) {\n\t\t\t\t// Position is in a view text node that has not been rendered to DOM yet.\n\t\t\t\treturn null;\n\t\t\t}\n\n\t\t\tlet offset = viewPosition.offset;\n\n\t\t\tif ( startsWithFiller( domParent ) ) {\n\t\t\t\toffset += INLINE_FILLER_LENGTH;\n\t\t\t}\n\n\t\t\treturn { parent: domParent, offset: offset };\n\t\t} else {\n\t\t\t// viewParent is instance of ViewElement.\n\t\t\tlet domParent, domBefore, domAfter;\n\n\t\t\tif ( viewPosition.offset === 0 ) {\n\t\t\t\tdomParent = this.getCorrespondingDom( viewPosition.parent );\n\n\t\t\t\tif ( !domParent ) {\n\t\t\t\t\t// Position is in a view element that has not been rendered to DOM yet.\n\t\t\t\t\treturn null;\n\t\t\t\t}\n\n\t\t\t\tdomAfter = domParent.childNodes[ 0 ];\n\t\t\t} else {\n\t\t\t\tdomBefore = this.getCorrespondingDom( viewPosition.nodeBefore );\n\n\t\t\t\tif ( !domBefore ) {\n\t\t\t\t\t// Position is after a view element that has not been rendered to DOM yet.\n\t\t\t\t\treturn null;\n\t\t\t\t}\n\n\t\t\t\tdomParent = domBefore.parentNode;\n\t\t\t\tdomAfter = domBefore.nextSibling;\n\t\t\t}\n\n\t\t\t// If there is an inline filler at position return position inside the filler. We should never return\n\t\t\t// the position before the inline filler.\n\t\t\tif ( this.isText( domAfter ) && startsWithFiller( domAfter ) ) {\n\t\t\t\treturn { parent: domAfter, offset: INLINE_FILLER_LENGTH };\n\t\t\t}\n\n\t\t\tconst offset = domBefore ? indexOf( domBefore ) + 1 : 0;\n\n\t\t\treturn { parent: domParent, offset: offset };\n\t\t}\n\t}\n\n\t/**\n\t * Converts DOM to view. For all text nodes, not bound elements and document fragments new items will\n\t * be created. For bound elements and document fragments function will return corresponding items. For\n\t * {@link module:engine/view/filler fillers} `null` will be returned.\n\t *\n\t * @param {Node|DocumentFragment} domNode DOM node or document fragment to transform.\n\t * @param {Object} [options] Conversion options.\n\t * @param {Boolean} [options.bind=false] Determines whether new elements will be bound.\n\t * @param {Boolean} [options.withChildren=true] If `true`, node's and document fragment's children will be converted too.\n\t * @param {Boolean} [options.keepOriginalCase=false] If `false`, node's tag name will be converter to lower case.\n\t * @returns {module:engine/view/node~Node|module:engine/view/documentfragment~DocumentFragment|null} Converted node or document fragment or\n\t * `null`\n\t * if DOM node is a {@link module:engine/view/filler filler} or the given node is an empty text node.\n\t */\n\tdomToView( domNode, options = {} ) {\n\t\tif ( isBlockFiller( domNode, this.blockFiller )  ) {\n\t\t\treturn null;\n\t\t}\n\n\t\tif ( this.isText( domNode ) ) {\n\t\t\tif ( isInlineFiller( domNode ) ) {\n\t\t\t\treturn null;\n\t\t\t} else {\n\t\t\t\tconst textData = this._processDataFromDomText( domNode );\n\n\t\t\t\treturn textData === '' ? null : new ViewText( textData );\n\t\t\t}\n\t\t} else {\n\t\t\tif ( this.getCorrespondingView( domNode ) ) {\n\t\t\t\treturn this.getCorrespondingView( domNode );\n\t\t\t}\n\n\t\t\tlet viewElement;\n\n\t\t\tif ( this.isDocumentFragment( domNode ) ) {\n\t\t\t\t// Create view document fragment.\n\t\t\t\tviewElement = new ViewDocumentFragment();\n\n\t\t\t\tif ( options.bind ) {\n\t\t\t\t\tthis.bindDocumentFragments( domNode, viewElement );\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\t// Create view element.\n\t\t\t\tconst viewName = options.keepOriginalCase ? domNode.tagName : domNode.tagName.toLowerCase();\n\t\t\t\tviewElement = new ViewElement( viewName );\n\n\t\t\t\tif ( options.bind ) {\n\t\t\t\t\tthis.bindElements( domNode, viewElement );\n\t\t\t\t}\n\n\t\t\t\t// Copy element's attributes.\n\t\t\t\tconst attrs = domNode.attributes;\n\n\t\t\t\tfor ( let i = attrs.length - 1; i >= 0; i-- ) {\n\t\t\t\t\tviewElement.setAttribute( attrs[ i ].name, attrs[ i ].value );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tif ( options.withChildren || options.withChildren === undefined ) {\n\t\t\t\tfor ( let child of this.domChildrenToView( domNode, options ) ) {\n\t\t\t\t\tviewElement.appendChildren( child );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn viewElement;\n\t\t}\n\t}\n\n\t/**\n\t * Converts children of the DOM element to view nodes using {@link module:engine/view/domconverter~DomConverter#domToView} method.\n\t * Additionally this method omits block {@link module:engine/view/filler filler}, if it exists in the DOM parent.\n\t *\n\t * @param {HTMLElement} domElement Parent DOM element.\n\t * @param {Object} options See {@link module:engine/view/domconverter~DomConverter#domToView} options parameter.\n\t * @returns {Iterable.<module:engine/view/node~Node>} View nodes.\n\t */\n\t*domChildrenToView( domElement, options = {} ) {\n\t\tfor ( let i = 0; i < domElement.childNodes.length; i++ ) {\n\t\t\tconst domChild = domElement.childNodes[ i ];\n\t\t\tconst viewChild = this.domToView( domChild, options );\n\n\t\t\tif ( viewChild !== null ) {\n\t\t\t\tyield viewChild;\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Converts DOM selection to view {@link module:engine/view/selection~Selection}.\n\t * Ranges which cannot be converted will be omitted.\n\t *\n\t * @param {Selection} domSelection DOM selection.\n\t * @returns {module:engine/view/selection~Selection} View selection.\n\t */\n\tdomSelectionToView( domSelection ) {\n\t\t// DOM selection might be placed in fake selection container.\n\t\t// If container contains fake selection - return corresponding view selection.\n\t\tif ( domSelection.rangeCount === 1 ) {\n\t\t\tlet container = domSelection.getRangeAt( 0 ).startContainer;\n\n\t\t\t// The DOM selection might be moved to the text node inside the fake selection container.\n\t\t\tif ( this.isText( container ) ) {\n\t\t\t\tcontainer = container.parentNode;\n\t\t\t}\n\n\t\t\tconst viewSelection = this.fakeSelectionToView( container );\n\n\t\t\tif ( viewSelection ) {\n\t\t\t\treturn viewSelection;\n\t\t\t}\n\t\t}\n\n\t\tconst viewSelection = new ViewSelection();\n\t\tconst isBackward = this.isDomSelectionBackward( domSelection );\n\n\t\tfor ( let i = 0; i < domSelection.rangeCount; i++ ) {\n\t\t\t// DOM Range have correct start and end, no matter what is the DOM Selection direction. So we don't have to fix anything.\n\t\t\tconst domRange = domSelection.getRangeAt( i );\n\t\t\tconst viewRange = this.domRangeToView( domRange );\n\n\t\t\tif ( viewRange ) {\n\t\t\t\tviewSelection.addRange( viewRange, isBackward );\n\t\t\t}\n\t\t}\n\n\t\treturn viewSelection;\n\t}\n\n\t/**\n\t * Converts DOM Range to view {@link module:engine/view/range~Range}.\n\t * If the start or end position can not be converted `null` is returned.\n\t *\n\t * @param {Range} domRange DOM range.\n\t * @returns {module:engine/view/range~Range|null} View range.\n\t */\n\tdomRangeToView( domRange ) {\n\t\tconst viewStart = this.domPositionToView( domRange.startContainer, domRange.startOffset );\n\t\tconst viewEnd = this.domPositionToView( domRange.endContainer, domRange.endOffset );\n\n\t\tif ( viewStart && viewEnd ) {\n\t\t\treturn new ViewRange( viewStart, viewEnd );\n\t\t}\n\n\t\treturn null;\n\t}\n\n\t/**\n\t * Converts DOM parent and offset to view {@link module:engine/view/position~Position}.\n\t *\n\t * If the position is inside a {@link module:engine/view/filler filler} which has no corresponding view node,\n\t * position of the filler will be converted and returned.\n\t *\n\t * If structures are too different and it is not possible to find corresponding position then `null` will be returned.\n\t *\n\t * @param {Node} domParent DOM position parent.\n\t * @param {Number} domOffset DOM position offset.\n\t * @returns {module:engine/view/position~Position} viewPosition View position.\n\t */\n\tdomPositionToView( domParent, domOffset ) {\n\t\tif ( isBlockFiller( domParent, this.blockFiller ) ) {\n\t\t\treturn this.domPositionToView( domParent.parentNode, indexOf( domParent ) );\n\t\t}\n\n\t\tif ( this.isText( domParent ) ) {\n\t\t\tif ( isInlineFiller( domParent ) ) {\n\t\t\t\treturn this.domPositionToView( domParent.parentNode, indexOf( domParent ) );\n\t\t\t}\n\n\t\t\tconst viewParent = this.getCorrespondingViewText( domParent );\n\t\t\tlet offset = domOffset;\n\n\t\t\tif ( !viewParent ) {\n\t\t\t\treturn null;\n\t\t\t}\n\n\t\t\tif ( startsWithFiller( domParent ) ) {\n\t\t\t\toffset -= INLINE_FILLER_LENGTH;\n\t\t\t\toffset = offset < 0 ? 0 : offset;\n\t\t\t}\n\n\t\t\treturn new ViewPosition( viewParent, offset );\n\t\t}\n\t\t// domParent instanceof HTMLElement.\n\t\telse {\n\t\t\tif ( domOffset === 0 ) {\n\t\t\t\tconst viewParent = this.getCorrespondingView( domParent );\n\n\t\t\t\tif ( viewParent ) {\n\t\t\t\t\treturn new ViewPosition( viewParent, 0 );\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\tconst viewBefore = this.getCorrespondingView( domParent.childNodes[ domOffset - 1 ] );\n\n\t\t\t\t// TODO #663\n\t\t\t\tif ( viewBefore && viewBefore.parent ) {\n\t\t\t\t\treturn new ViewPosition( viewBefore.parent, viewBefore.index + 1 );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn null;\n\t\t}\n\t}\n\n\t/**\n\t * Gets corresponding view item. This function use\n\t * {@link module:engine/view/domconverter~DomConverter#getCorrespondingViewElement getCorrespondingViewElement}\n\t * for elements, {@link  module:engine/view/domconverter~DomConverter#getCorrespondingViewText getCorrespondingViewText} for text\n\t * nodes and {@link module:engine/view/domconverter~DomConverter#getCorrespondingViewDocumentFragment getCorrespondingViewDocumentFragment}\n\t * for document fragments.\n\t *\n\t * Note that for the block or inline {@link module:engine/view/filler filler} this method returns `null`.\n\t *\n\t * @param {Node|DocumentFragment} domNode DOM node or document fragment.\n\t * @returns {module:engine/view/node~Node|module:engine/view/documentfragment~DocumentFragment|null} Corresponding view item.\n\t */\n\tgetCorrespondingView( domNode ) {\n\t\tif ( this.isElement( domNode ) ) {\n\t\t\treturn this.getCorrespondingViewElement( domNode );\n\t\t} else if ( this.isDocumentFragment( domNode ) ) {\n\t\t\treturn this.getCorrespondingViewDocumentFragment( domNode );\n\t\t} else if ( this.isText( domNode ) ) {\n\t\t\treturn this.getCorrespondingViewText( domNode );\n\t\t}\n\n\t\treturn null;\n\t}\n\n\t/**\n\t * Gets corresponding view element. Returns element if an view element was\n\t * {@link module:engine/view/domconverter~DomConverter#bindElements bound} to the given DOM element or `null` otherwise.\n\t *\n\t * @param {HTMLElement} domElement DOM element.\n\t * @returns {module:engine/view/element~Element|null} Corresponding element or `null` if no element was bound.\n\t */\n\tgetCorrespondingViewElement( domElement ) {\n\t\treturn this._domToViewMapping.get( domElement );\n\t}\n\n\t/**\n\t * Gets corresponding view document fragment. Returns document fragment if an view element was\n\t * {@link module:engine/view/domconverter~DomConverter#bindDocumentFragments bound} to the given DOM fragment or `null` otherwise.\n\t *\n\t * @param {DocumentFragment} domFragment DOM element.\n\t * @returns {module:engine/view/documentfragment~DocumentFragment|null} Corresponding document fragment or `null` if none element was\n\t * bound.\n\t */\n\tgetCorrespondingViewDocumentFragment( domFragment ) {\n\t\treturn this._domToViewMapping.get( domFragment );\n\t}\n\n\t/**\n\t * Gets corresponding text node. Text nodes are not {@link module:engine/view/domconverter~DomConverter#bindElements bound},\n\t * corresponding text node is returned based on the sibling or parent.\n\t *\n\t * If the directly previous sibling is a {@link module:engine/view/domconverter~DomConverter#bindElements bound} element, it is used\n\t * to find the corresponding text node.\n\t *\n\t * If this is a first child in the parent and the parent is a {@link module:engine/view/domconverter~DomConverter#bindElements bound}\n\t * element, it is used to find the corresponding text node.\n\t *\n\t * Otherwise `null` is returned.\n\t *\n\t * Note that for the block or inline {@link module:engine/view/filler filler} this method returns `null`.\n\t *\n\t * @param {Text} domText DOM text node.\n\t * @returns {module:engine/view/text~Text|null} Corresponding view text node or `null`, if it was not possible to find a\n\t * corresponding node.\n\t */\n\tgetCorrespondingViewText( domText ) {\n\t\tif ( isInlineFiller( domText ) ) {\n\t\t\treturn null;\n\t\t}\n\n\t\tconst previousSibling = domText.previousSibling;\n\n\t\t// Try to use previous sibling to find the corresponding text node.\n\t\tif ( previousSibling ) {\n\t\t\tif ( !( this.isElement( previousSibling ) ) ) {\n\t\t\t\t// The previous is text or comment.\n\t\t\t\treturn null;\n\t\t\t}\n\n\t\t\tconst viewElement = this.getCorrespondingViewElement( previousSibling );\n\n\t\t\tif ( viewElement ) {\n\t\t\t\tconst nextSibling = viewElement.nextSibling;\n\n\t\t\t\t// It might be filler which has no corresponding view node.\n\t\t\t\tif ( nextSibling instanceof ViewText ) {\n\t\t\t\t\treturn viewElement.nextSibling;\n\t\t\t\t} else {\n\t\t\t\t\treturn null;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t\t// Try to use parent to find the corresponding text node.\n\t\telse {\n\t\t\tconst viewElement = this.getCorrespondingViewElement( domText.parentNode );\n\n\t\t\tif ( viewElement ) {\n\t\t\t\tconst firstChild = viewElement.getChild( 0 );\n\n\t\t\t\t// It might be filler which has no corresponding view node.\n\t\t\t\tif ( firstChild instanceof ViewText ) {\n\t\t\t\t\treturn firstChild;\n\t\t\t\t} else {\n\t\t\t\t\treturn null;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn null;\n\t}\n\n\t/**\n\t * Gets corresponding DOM item. This function uses\n\t * {@link module:engine/view/domconverter~DomConverter#getCorrespondingDomElement getCorrespondingDomElement} for\n\t * elements, {@link module:engine/view/domconverter~DomConverter#getCorrespondingDomText getCorrespondingDomText} for text nodes\n\t * and {@link module:engine/view/domconverter~DomConverter#getCorrespondingDomDocumentFragment getCorrespondingDomDocumentFragment}\n\t * for document fragments.\n\t *\n\t * @param {module:engine/view/node~Node|module:engine/view/documentfragment~DocumentFragment} viewNode View node or document fragment.\n\t * @returns {Node|DocumentFragment|null} Corresponding DOM node or document fragment.\n\t */\n\tgetCorrespondingDom( viewNode ) {\n\t\tif ( viewNode instanceof ViewElement ) {\n\t\t\treturn this.getCorrespondingDomElement( viewNode );\n\t\t} else if ( viewNode instanceof ViewDocumentFragment ) {\n\t\t\treturn this.getCorrespondingDomDocumentFragment( viewNode );\n\t\t} else if ( viewNode instanceof ViewText ) {\n\t\t\treturn this.getCorrespondingDomText( viewNode );\n\t\t}\n\n\t\treturn null;\n\t}\n\n\t/**\n\t * Gets corresponding DOM element. Returns element if an DOM element was\n\t * {@link module:engine/view/domconverter~DomConverter#bindElements bound} to the given view element or `null` otherwise.\n\t *\n\t * @param {module:engine/view/element~Element} viewElement View element.\n\t * @returns {HTMLElement|null} Corresponding element or `null` if none element was bound.\n\t */\n\tgetCorrespondingDomElement( viewElement ) {\n\t\treturn this._viewToDomMapping.get( viewElement );\n\t}\n\n\t/**\n\t * Gets corresponding DOM document fragment. Returns document fragment if an DOM element was\n\t * {@link module:engine/view/domconverter~DomConverter#bindDocumentFragments bound} to the given view document fragment or `null`\n\t * otherwise.\n\t *\n\t * @param {module:engine/view/documentfragment~DocumentFragment} viewDocumentFragment View document fragment.\n\t * @returns {DocumentFragment|null} Corresponding document fragment or `null` if no fragment was bound.\n\t */\n\tgetCorrespondingDomDocumentFragment( viewDocumentFragment ) {\n\t\treturn this._viewToDomMapping.get( viewDocumentFragment );\n\t}\n\n\t/**\n\t * Gets corresponding text node. Text nodes are not {@link module:engine/view/domconverter~DomConverter#bindElements bound},\n\t * corresponding text node is returned based on the sibling or parent.\n\t *\n\t * If the directly previous sibling is a {@link module:engine/view/domconverter~DomConverter#bindElements bound} element, it is used\n\t * to find the corresponding text node.\n\t *\n\t * If this is a first child in the parent and the parent is a {@link module:engine/view/domconverter~DomConverter#bindElements bound}\n\t * element, it is used to find the corresponding text node.\n\t *\n\t * Otherwise `null` is returned.\n\t *\n\t * @param {module:engine/view/text~Text} viewText View text node.\n\t * @returns {Text|null} Corresponding DOM text node or `null`, if it was not possible to find a corresponding node.\n\t */\n\tgetCorrespondingDomText( viewText ) {\n\t\tconst previousSibling = viewText.previousSibling;\n\n\t\t// Try to use previous sibling to find the corresponding text node.\n\t\tif ( previousSibling && this.getCorrespondingDom( previousSibling ) ) {\n\t\t\treturn this.getCorrespondingDom( previousSibling ).nextSibling;\n\t\t}\n\n\t\t// If this is a first node, try to use parent to find the corresponding text node.\n\t\tif ( !previousSibling && viewText.parent && this.getCorrespondingDom( viewText.parent ) ) {\n\t\t\treturn this.getCorrespondingDom( viewText.parent ).childNodes[ 0 ];\n\t\t}\n\n\t\treturn null;\n\t}\n\n\t/**\n\t * Focuses DOM editable that is corresponding to provided {@link module:engine/view/editableelement~EditableElement EditableElement}.\n\t *\n\t * @param {module:engine/view/editableelement~EditableElement} viewEditable\n\t */\n\tfocus( viewEditable ) {\n\t\tconst domEditable = this.getCorrespondingDomElement( viewEditable );\n\n\t\tif ( domEditable && domEditable.ownerDocument.activeElement !== domEditable ) {\n\t\t\tdomEditable.focus();\n\t\t}\n\t}\n\n\t/**\n\t * Returns `true` when `node.nodeType` equals `Node.TEXT_NODE`.\n\t *\n\t * @param {Node} node Node to check.\n\t * @returns {Boolean}\n\t */\n\tisText( node ) {\n\t\treturn node && node.nodeType == Node.TEXT_NODE;\n\t}\n\n\t/**\n\t * Returns `true` when `node.nodeType` equals `Node.ELEMENT_NODE`.\n\t *\n\t * @param {Node} node Node to check.\n\t * @returns {Boolean}\n\t */\n\tisElement( node ) {\n\t\treturn node && node.nodeType == Node.ELEMENT_NODE;\n\t}\n\n\t/**\n\t * Returns `true` when `node.nodeType` equals `Node.DOCUMENT_FRAGMENT_NODE`.\n\t *\n\t * @param {Node} node Node to check.\n\t * @returns {Boolean}\n\t */\n\tisDocumentFragment( node ) {\n\t\treturn node && node.nodeType == Node.DOCUMENT_FRAGMENT_NODE;\n\t}\n\n\t/**\n\t * Returns `true` if given selection is a backward selection, that is, if it's `focus` is before `anchor`.\n\t *\n\t * @param {Selection} DOM Selection instance to check.\n\t * @returns {Boolean}\n\t */\n\tisDomSelectionBackward( selection ) {\n\t\tif ( selection.isCollapsed ) {\n\t\t\treturn false;\n\t\t}\n\n\t\t// Since it takes multiple lines of code to check whether a \"DOM Position\" is before/after another \"DOM Position\",\n\t\t// we will use the fact that range will collapse if it's end is before it's start.\n\t\tconst range = new Range();\n\n\t\trange.setStart( selection.anchorNode, selection.anchorOffset );\n\t\trange.setEnd( selection.focusNode, selection.focusOffset );\n\n\t\tconst backward = range.collapsed;\n\n\t\trange.detach();\n\n\t\treturn backward;\n\t}\n\n\t/**\n\t * Takes text data from given {@link module:engine/view/text~Text#data} and processes it so it is correctly displayed in DOM.\n\t *\n\t * Following changes are done:\n\t * * multiple spaces are replaced to a chain of spaces and `&nbsp;`,\n\t * * space at the beginning of the text node is changed to `&nbsp;` if it is a first text node in it's container\n\t * element or if previous text node ends by space character,\n\t * * space at the end of the text node is changed to `&nbsp;` if it is a last text node in it's container.\n\t *\n\t * @private\n\t * @param {module:engine/view/text~Text} node View text node to process.\n\t * @returns {String} Processed text data.\n\t */\n\t_processDataFromViewText( node ) {\n\t\tlet data = node.data;\n\n\t\t// If any of node ancestors has a name which is in `preElements` array, then currently processed\n\t\t// view text node is (will be) in preformatted element. We should not change whitespaces then.\n\t\tif ( node.getAncestors().some( ( parent ) => this.preElements.includes( parent.name ) ) )  {\n\t\t\treturn data;\n\t\t}\n\n\t\tconst prevNode = this._getTouchingViewTextNode( node, false );\n\t\tconst nextNode = this._getTouchingViewTextNode( node, true );\n\n\t\t// Second part of text data, from the space after the last non-space character to the end.\n\t\t// We separate `textEnd` and `textStart` because `textEnd` needs some special handling.\n\t\tlet textEnd = data.match( / *$/ )[ 0 ];\n\t\t// First part of data, between first and last part of data.\n\t\tlet textStart = data.substr( 0, data.length - textEnd.length );\n\n\t\t// If previous text node does not exist or it ends by space character, replace space character at the beginning of text.\n\t\t// ` x`\t\t\t-> `_x`\n\t\t// `  x`\t\t-> `_ x`\n\t\t// `   x`\t\t-> `_  x`\n\t\tif ( !prevNode || prevNode.data.charAt( prevNode.data.length - 1 ) == ' ' ) {\n\t\t\ttextStart = textStart.replace( /^ /, '\\u00A0' );\n\t\t}\n\n\t\t// Multiple consecutive spaces. Change them to ` &nbsp;` pairs.\n\t\t// `_x  x`\t\t-> `_x _x`\n\t\t// `_ x  x`\t\t-> `_ x _x`\n\t\t// `_  x  x`\t-> `_ _x _x`\n\t\t// `_  x   x`\t-> `_ _x _ x`\n\t\t// `_  x    x`\t-> `_ _x _ _x`\n\t\t// `_   x    x` -> `_ _ x _ _x`\n\t\ttextStart = textStart.replace( /  /g, ' \\u00A0' );\n\n\t\t// Process `textEnd` only if there is anything to process.\n\t\tif ( textEnd.length > 0 ) {\n\t\t\t// (1) We need special treatment for the last part of text node, it has to end on `&nbsp;`, not space:\n\t\t\t// `x `\t\t-> `x_`\n\t\t\t// `x  `\t-> `x _`\n\t\t\t// `x   `\t-> `x_ _`\n\t\t\t// `x    `\t-> `x _ _`\n\t\t\t// (2) Different case when there is a node after:\n\t\t\t// `x <b>b</b>`\t\t-> `x <b>b</b>`\n\t\t\t// `x  <b>b</b>`\t-> `x _<b>b</b>`\n\t\t\t// `x   <b>b</b>`\t-> `x _ <b>b</b>`\n\t\t\t// `x    <b>b</b>`\t-> `x _ _<b>b</b>`\n\t\t\t// (3) But different, when that node starts by &nbsp; (or space that will be converted to &nbsp;):\n\t\t\t// `x <b>_b</b>`\t-> `x <b>_b</b>`\n\t\t\t// `x  <b>_b</b>`\t-> `x_ <b>_b</b>`\n\t\t\t// `x   <b>_b</b>`\t-> `x _ <b>_b</b>`\n\t\t\t// `x    <b>_b</b>`\t-> `x_ _ <b>_b</b>`\n\t\t\t// Let's assume that starting from space is normal behavior, because starting from &nbsp; is a less frequent case.\n\t\t\tlet textEndStartsFromNbsp = false;\n\n\t\t\tif ( !nextNode ) {\n\t\t\t\t// (1)\n\t\t\t\tif ( textEnd.length % 2 ) {\n\t\t\t\t\ttextEndStartsFromNbsp = true;\n\t\t\t\t}\n\t\t\t} else if ( nextNode.data.charAt( 0 ) == ' ' || nextNode.data.charAt( 0 ) == '\\u00A0' ) {\n\t\t\t\t// (3)\n\t\t\t\tif ( textEnd.length % 2 === 0 ) {\n\t\t\t\t\ttextEndStartsFromNbsp = true;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tif ( textEndStartsFromNbsp ) {\n\t\t\t\ttextEnd = '\\u00A0' + textEnd.substr( 0, textEnd.length - 1 );\n\t\t\t}\n\n\t\t\ttextEnd = textEnd.replace( /  /g, ' \\u00A0' );\n\t\t}\n\n\t\treturn textStart + textEnd;\n\t}\n\n\t/**\n\t * Helper function. For given {@link module:engine/view/text~Text view text node}, it finds previous or next sibling that is contained\n\t * in the same block element. If there is no such sibling, `null` is returned.\n\t *\n\t * @private\n\t * @param {module:engine/view/text~Text} node\n\t * @param {Boolean} getNext\n\t * @returns {module:engine/view/text~Text}\n\t */\n\t_getTouchingViewTextNode( node, getNext ) {\n\t\tif ( !node.parent ) {\n\t\t\treturn null;\n\t\t}\n\n\t\tconst treeWalker = new ViewTreeWalker( {\n\t\t\tstartPosition: getNext ? ViewPosition.createAfter( node ) : ViewPosition.createBefore( node ),\n\t\t\tdirection: getNext ? 'forward' : 'backward'\n\t\t} );\n\n\t\tfor ( let value of treeWalker ) {\n\t\t\tif ( value.item.is( 'containerElement' ) ) {\n\t\t\t\t// ViewContainerElement is found on a way to next ViewText node, so given `node` was first/last\n\t\t\t\t// text node in it's container element.\n\t\t\t\treturn null;\n\t\t\t} else if ( value.item.is( 'text' ) ) {\n\t\t\t\t// Found a text node in the same container element.\n\t\t\t\treturn value.item;\n\t\t\t}\n\t\t}\n\n\t\treturn null;\n\t}\n\n\t/**\n\t * Takes text data from native `Text` node and processes it to a correct {@link module:engine/view/text~Text view text node} data.\n\t *\n\t * Following changes are done:\n\t * * multiple whitespaces are replaced to a single space,\n\t * * space at the beginning of the text node is removed, if it is a first text node in it's container\n\t * element or if previous text node ends by space character,\n\t * * space at the end of the text node is removed, if it is a last text node in it's container.\n\t *\n\t * @param {Node} node DOM text node to process.\n\t * @returns {String} Processed data.\n\t * @private\n\t */\n\t_processDataFromDomText( node ) {\n\t\tlet data = getDataWithoutFiller( node );\n\n\t\tif ( _hasDomParentOfType( node, this.preElements ) ) {\n\t\t\treturn data;\n\t\t}\n\n\t\t// Change all consecutive whitespace characters to a single space character. That's how multiple whitespaces\n\t\t// are treated when rendered, so we normalize those whitespaces.\n\t\t// Note that &nbsp; (`\\u00A0`) should not be treated as a whitespace because it is rendered.\n\t\tdata = data.replace( /[^\\S\\u00A0]{2,}/g, ' ' );\n\n\t\tconst prevNode = this._getTouchingDomTextNode( node, false );\n\t\tconst nextNode = this._getTouchingDomTextNode( node, true );\n\n\t\t// If previous dom text node does not exist or it ends by whitespace character, remove space character from the beginning\n\t\t// of this text node. Such space character is treated as a whitespace.\n\t\tif ( !prevNode || /[^\\S\\u00A0]/.test( prevNode.data.charAt( prevNode.data.length - 1 ) ) ) {\n\t\t\tdata = data.replace( /^ /, '' );\n\t\t}\n\n\t\t// If next text node does not exist remove space character from the end of this text node.\n\t\tif ( !nextNode ) {\n\t\t\tdata = data.replace( / $/, '' );\n\t\t}\n\t\t// At this point we should have removed all whitespaces from DOM text data.\n\n\t\t// Now we have to change &nbsp; chars, that were in DOM text data because of rendering reasons, to spaces.\n\t\t// First, change all ` \\u00A0` pairs (space + &nbsp;) to two spaces. DOM converter changes two spaces from model/view as\n\t\t// ` \\u00A0` to ensure proper rendering. Since here we convert back, we recognize those pairs and change them\n\t\t// to `  ` which is what we expect to have in model/view.\n\t\tdata = data.replace( / \\u00A0/g, '  ' );\n\t\t// Then, change &nbsp; character that is at the beginning of the text node to space character.\n\t\t// As above, that &nbsp; was created for rendering reasons but it's real meaning is just a space character.\n\t\t// We do that replacement only if this is the first node or the previous node ends on whitespace character.\n\t\tif ( !prevNode || /[^\\S\\u00A0]/.test( prevNode.data.charAt( prevNode.data.length - 1 ) ) ) {\n\t\t\tdata = data.replace( /^\\u00A0/, ' ' );\n\t\t}\n\t\t// Since input text data could be: `x_ _`, we would not replace the first &nbsp; after `x` character.\n\t\t// We have to fix it. Since we already change all ` &nbsp;`, we will have something like this at the end of text data:\n\t\t// `x_ _ _` -> `x_    `. Find &nbsp; at the end of string (can be followed only by spaces).\n\t\t// We do that replacement only if this is the last node or the next node starts by &nbsp;.\n\t\tif ( !nextNode || nextNode.data.charAt( 0 ) == '\\u00A0' ) {\n\t\t\tdata = data.replace( /\\u00A0( *)$/, ' $1' );\n\t\t}\n\n\t\t// At this point, all whitespaces should be removed and all &nbsp; created for rendering reasons should be\n\t\t// changed to normal space. All left &nbsp; are &nbsp; inserted intentionally.\n\t\treturn data;\n\t}\n\n\t/**\n\t * Helper function. For given `Text` node, it finds previous or next sibling that is contained in the same block element.\n\t * If there is no such sibling, `null` is returned.\n\t *\n\t * @private\n\t * @param {Text} node\n\t * @param {Boolean} getNext\n\t * @returns {Text|null}\n\t */\n\t_getTouchingDomTextNode( node, getNext ) {\n\t\tif ( !node.parentNode ) {\n\t\t\treturn null;\n\t\t}\n\n\t\tconst direction = getNext ? 'nextNode' : 'previousNode';\n\t\tconst document = node.ownerDocument;\n\t\tconst treeWalker = document.createTreeWalker( document.childNodes[ 0 ], NodeFilter.SHOW_TEXT );\n\n\t\ttreeWalker.currentNode = node;\n\n\t\tconst touchingNode = treeWalker[ direction ]();\n\n\t\tif ( touchingNode !== null ) {\n\t\t\tconst lca = getCommonAncestor( node, touchingNode );\n\n\t\t\t// If there is common ancestor between the text node and next/prev text node,\n\t\t\t// and there are no block elements on a way from the text node to that ancestor,\n\t\t\t// and there are no block elements on a way from next/prev text node to that ancestor...\n\t\t\tif ( lca && !_hasDomParentOfType( node, this.blockElements, lca ) && !_hasDomParentOfType( touchingNode, this.blockElements, lca ) ) {\n\t\t\t\t// Then they are in the same container element.\n\t\t\t\treturn touchingNode;\n\t\t\t}\n\t\t}\n\n\t\treturn null;\n\t}\n}\n\n// Helper function.\n// Used to check if given native `Element` or `Text` node has parent with tag name from `types` array.\n//\n// @param {Node} node\n// @param {Array.<String>} types\n// @param {Boolean} [boundaryParent] Can be given if parents should be checked up to a given element (excluding that element).\n// @returns {Boolean} `true` if such parent exists or `false` if it does not.\nfunction _hasDomParentOfType( node, types, boundaryParent ) {\n\tlet parents = getAncestors( node );\n\n\tif ( boundaryParent ) {\n\t\tparents = parents.slice( parents.indexOf( boundaryParent ) + 1 );\n\t}\n\n\treturn parents.some( ( parent ) => parent.tagName && types.includes( parent.tagName.toLowerCase() ) );\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/view/domconverter.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/emptyelement\n */\n\nimport Element from './element';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\nimport Node from './node';\n\n/**\n * EmptyElement class. It is used to represent elements that cannot contain any child nodes.\n */\nexport default class EmptyElement extends Element {\n\t/**\n\t * Creates new instance of EmptyElement.\n\t *\n\t * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-emptyelement-cannot-add` when third parameter is passed,\n\t * to inform that usage of EmptyElement is incorrect (adding child nodes to EmptyElement is forbidden).\n\t *\n\t * @param {String} name Node name.\n\t * @param {Object|Iterable} [attributes] Collection of attributes.\n\t */\n\tconstructor( name, attributes, children ) {\n\t\tsuper( name, attributes, children );\n\n\t\t/**\n\t\t * Returns `null` because filler is not needed for EmptyElements.\n\t\t *\n\t\t * @method #getFillerOffset\n\t\t * @returns {null} Always returns null.\n\t\t */\n\t\tthis.getFillerOffset = getFillerOffset;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tis( type, name = null ) {\n\t\tif ( !name ) {\n\t\t\treturn type == 'emptyElement' || super.is( type );\n\t\t} else {\n\t\t\treturn ( type == 'emptyElement' && name == this.name ) || super.is( type, name );\n\t\t}\n\t}\n\n\t/**\n\t * Overrides {@link module:engine/view/element~Element#insertChildren} method.\n\t * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-emptyelement-cannot-add` to prevent adding any child nodes\n\t * to EmptyElement.\n\t */\n\tinsertChildren( index, nodes ) {\n\t\tif ( nodes && ( nodes instanceof Node || Array.from( nodes ).length > 0 ) ) {\n\t\t\t/**\n\t\t\t * Cannot add children to {@link module:engine/view/emptyelement~EmptyElement}.\n\t\t\t *\n\t\t\t * @error view-emptyelement-cannot-add\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'view-emptyelement-cannot-add: Cannot add child nodes to EmptyElement instance.' );\n\t\t}\n\t}\n}\n\n// Returns `null` because block filler is not needed for EmptyElements.\n//\n// @returns {null}\nfunction getFillerOffset() {\n\treturn null;\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/view/emptyelement.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/observer/mutationobserver\n */\n\n/* globals window */\n\nimport Observer from './observer';\nimport ViewSelection from '../selection';\nimport { startsWithFiller, getDataWithoutFiller } from '../filler';\n\n/**\n * Mutation observer class observes changes in the DOM, fires {@link module:engine/view/document~Document#event:mutations} event, mark view\n * elements as changed and call {@link module:engine/view/renderer~Renderer#render}.\n * Because all mutated nodes are marked as \"to be rendered\" and the\n * {@link module:engine/view/renderer~Renderer#render} is called, all changes will be reverted, unless the mutation will be handled by the\n * {@link module:engine/view/document~Document#event:mutations} event listener. It means user will see only handled changes, and the editor\n * will block all changes which are not handled.\n *\n * Mutation Observer also take care of reducing number of mutations which are fired. It removes duplicates and\n * mutations on elements which do not have corresponding view elements. Also\n * {@link module:engine/view/observer/mutationobserver~MutatedText text mutation} is fired only if parent element do not change child list.\n *\n * Note that this observer is attached by the {@link module:engine/view/document~Document} and is available by default.\n *\n * @extends module:engine/view/observer/observer~Observer\n */\nexport default class MutationObserver extends Observer {\n\tconstructor( document ) {\n\t\tsuper( document );\n\n\t\t/**\n\t\t * Native mutation observer config.\n\t\t *\n\t\t * @private\n\t\t * @member {Object}\n\t\t */\n\t\tthis._config = {\n\t\t\tchildList: true,\n\t\t\tcharacterData: true,\n\t\t\tcharacterDataOldValue: true,\n\t\t\tsubtree: true\n\t\t};\n\n\t\t/**\n\t\t * Reference to the {@link module:engine/view/document~Document#domConverter}.\n\t\t *\n\t\t * @member {module:engine/view/domconverter~DomConverter}\n\t\t */\n\t\tthis.domConverter = document.domConverter;\n\n\t\t/**\n\t\t * Reference to the {@link module:engine/view/document~Document#renderer}.\n\t\t *\n\t\t * @member {module:engine/view/renderer~Renderer}\n\t\t */\n\t\tthis.renderer = document.renderer;\n\n\t\t/**\n\t\t * Observed DOM elements.\n\t\t *\n\t\t * @private\n\t\t * @member {Array.<HTMLElement>}\n\t\t */\n\t\tthis._domElements = [];\n\n\t\t/**\n\t\t * Native mutation observer.\n\t\t *\n\t\t * @private\n\t\t * @member {MutationObserver}\n\t\t */\n\t\tthis._mutationObserver = new window.MutationObserver( this._onMutations.bind( this ) );\n\t}\n\n\t/**\n\t * Synchronously fires {@link module:engine/view/document~Document#event:mutations} event with all mutations in record queue.\n\t * At the same time empties the queue so mutations will not be fired twice.\n\t */\n\tflush() {\n\t\tthis._onMutations( this._mutationObserver.takeRecords() );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tobserve( domElement ) {\n\t\tthis._domElements.push( domElement );\n\n\t\tif ( this.isEnabled ) {\n\t\t\tthis._mutationObserver.observe( domElement, this._config );\n\t\t}\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tenable() {\n\t\tsuper.enable();\n\n\t\tfor ( let domElement of this._domElements ) {\n\t\t\tthis._mutationObserver.observe( domElement, this._config );\n\t\t}\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tdisable() {\n\t\tsuper.disable();\n\n\t\tthis._mutationObserver.disconnect();\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tdestroy() {\n\t\tsuper.destroy();\n\n\t\tthis._mutationObserver.disconnect();\n\t}\n\n\t/**\n\t * Handles mutations. Deduplicates, mark view elements to sync, fire event and call render.\n\t *\n\t * @private\n\t * @param {Array.<Object>} domMutations Array of native mutations.\n\t */\n\t_onMutations( domMutations ) {\n\t\t// As a result of this.flush() we can have an empty collection.\n\t\tif ( domMutations.length === 0 ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst domConverter = this.domConverter;\n\n\t\t// Use　map and set for deduplication.\n\t\tconst mutatedTexts = new Map();\n\t\tconst mutatedElements = new Set();\n\n\t\t// Handle `childList` mutations first, so we will be able to check if the `characterData` mutation is in the\n\t\t// element with changed structure anyway.\n\t\tfor ( let mutation of domMutations ) {\n\t\t\tif ( mutation.type === 'childList' ) {\n\t\t\t\tconst element = domConverter.getCorrespondingViewElement( mutation.target );\n\n\t\t\t\tif ( element ) {\n\t\t\t\t\tmutatedElements.add( element );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t// Handle `characterData` mutations later, when we have the full list of nodes which changed structure.\n\t\tfor ( let mutation of domMutations ) {\n\t\t\tif ( mutation.type === 'characterData' ) {\n\t\t\t\tconst text = domConverter.getCorrespondingViewText( mutation.target );\n\n\t\t\t\tif ( text && !mutatedElements.has( text.parent ) ) {\n\t\t\t\t\t// Use text as a key, for deduplication. If there will be another mutation on the same text element\n\t\t\t\t\t// we will have only one in the map.\n\t\t\t\t\tmutatedTexts.set( text, {\n\t\t\t\t\t\ttype: 'text',\n\t\t\t\t\t\toldText: text.data,\n\t\t\t\t\t\tnewText: getDataWithoutFiller( mutation.target ),\n\t\t\t\t\t\tnode: text\n\t\t\t\t\t} );\n\t\t\t\t}\n\t\t\t\t// When we added first letter to the text node which had only inline filler, for the DOM it is mutation\n\t\t\t\t// on text, but for the view, where filler text node did not existed, new text node was created, so we\n\t\t\t\t// need to fire 'children' mutation instead of 'text'.\n\t\t\t\telse if ( !text && startsWithFiller( mutation.target ) ) {\n\t\t\t\t\tmutatedElements.add( domConverter.getCorrespondingViewElement( mutation.target.parentNode ) );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t// Now we build the list of mutations to fire and mark elements. We did not do it earlier to avoid marking the\n\t\t// same node multiple times in case of duplication.\n\n\t\t// List of mutations we will fire.\n\t\tconst viewMutations = [];\n\n\t\tfor ( let mutatedText of mutatedTexts.values() ) {\n\t\t\tthis.renderer.markToSync( 'text', mutatedText.node );\n\t\t\tviewMutations.push( mutatedText );\n\t\t}\n\n\t\tfor ( let viewElement of mutatedElements ) {\n\t\t\tconst domElement = domConverter.getCorrespondingDomElement( viewElement );\n\t\t\tconst viewChildren = viewElement.getChildren();\n\t\t\tconst newViewChildren = domConverter.domChildrenToView( domElement );\n\n\t\t\tthis.renderer.markToSync( 'children', viewElement );\n\t\t\tviewMutations.push( {\n\t\t\t\ttype: 'children',\n\t\t\t\toldChildren: Array.from( viewChildren ),\n\t\t\t\tnewChildren: Array.from( newViewChildren ),\n\t\t\t\tnode: viewElement\n\t\t\t} );\n\t\t}\n\n\t\t// Retrieve `domSelection` using `ownerDocument` of one of mutated nodes.\n\t\t// There should not be simultaneous mutation in multiple documents, so it's fine.\n\t\tconst domSelection = domMutations[ 0 ].target.ownerDocument.getSelection();\n\n\t\tlet viewSelection = null;\n\n\t\tif ( domSelection && domSelection.anchorNode ) {\n\t\t\t// If `domSelection` is inside a dom node that is already bound to a view node from view tree, get\n\t\t\t// corresponding selection in the view and pass it together with `viewMutations`. The `viewSelection` may\n\t\t\t// be used by features handling mutations.\n\t\t\t// Only one range is supported.\n\n\t\t\tconst viewSelectionAnchor = domConverter.domPositionToView( domSelection.anchorNode, domSelection.anchorOffset );\n\t\t\tconst viewSelectionFocus = domConverter.domPositionToView( domSelection.focusNode, domSelection.focusOffset );\n\n\t\t\t// Anchor and focus has to be properly mapped to view.\n\t\t\tif ( viewSelectionAnchor && viewSelectionFocus ) {\n\t\t\t\tviewSelection = new ViewSelection();\n\t\t\t\tviewSelection.collapse( viewSelectionAnchor );\n\t\t\t\tviewSelection.setFocus( viewSelectionFocus );\n\t\t\t}\n\t\t}\n\n\t\tthis.document.fire( 'mutations', viewMutations, viewSelection );\n\n\t\t// If nothing changes on `mutations` event, at this point we have \"dirty DOM\" (changed) and de-synched\n\t\t// view (which has not been changed). In order to \"reset DOM\" we render the view again.\n\t\tthis.document.render();\n\t}\n}\n\n/**\n * Fired when mutation occurred. If tree view is not changed on this event, DOM will be reverter to the state before\n * mutation, so all changes which should be applied, should be handled on this event.\n *\n * Introduced by {@link module:engine/view/observer/mutationobserver~MutationObserver}.\n *\n * Note that because {@link module:engine/view/observer/mutationobserver~MutationObserver} is attached by the\n * {@link module:engine/view/document~Document}\n * this event is available by default.\n *\n * @see module:engine/view/observer/mutationobserver~MutationObserver\n * @event module:engine/view/document~Document#event:mutations\n * @param {Array.<module:engine/view/observer/mutationobserver~MutatedText|module:engine/view/observer/mutationobserver~MutatedChildren>}\n * viewMutations Array of mutations.\n * For mutated texts it will be {@link module:engine/view/observer/mutationobserver~MutatedText} and for mutated elements it will be\n * {@link module:engine/view/observer/mutationobserver~MutatedChildren}. You can recognize the type based on the `type` property.\n * @param {module:engine/view/selection~Selection|null} viewSelection View selection that is a result of converting DOM selection to view.\n * Keep in\n * mind that the DOM selection is already \"updated\", meaning that it already acknowledges changes done in mutation.\n */\n\n/**\n * Mutation item for text.\n *\n * @see module:engine/view/document~Document#event:mutations\n * @see module:engine/view/observer/mutationobserver~MutatedChildren\n *\n * @typedef {Object} module:engine/view/observer/mutationobserver~MutatedText\n *\n * @property {String} type For text mutations it is always 'text'.\n * @property {module:engine/view/text~Text} node Mutated text node.\n * @property {String} oldText Old text.\n * @property {String} newText New text.\n */\n\n/**\n * Mutation item for child nodes.\n *\n * @see module:engine/view/document~Document#event:mutations\n * @see module:engine/view/observer/mutationobserver~MutatedText\n *\n * @typedef {Object} module:engine/view/observer/mutationobserver~MutatedChildren\n *\n * @property {String} type For child nodes mutations it is always 'children'.\n * @property {module:engine/view/element~Element} node Parent of the mutated children.\n * @property {Array.<module:engine/view/node~Node>} oldChildren Old child nodes.\n * @property {Array.<module:engine/view/node~Node>} newChildren New child nodes.\n */\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/view/observer/mutationobserver.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/rooteditableelement\n */\n\nimport EditableElement from './editableelement';\n\nconst rootNameSymbol = Symbol( 'rootName' );\n\n/**\n * Class representing a single root in the data view. A root can be either {@link #isReadOnly editable or read-only}, but\n * in both cases it is called \"an editable\". Roots can contain other {@link module:engine/view/editableelement~EditableElement editable\n * elements}\n * making them \"nested editables\".\n *\n * @extends module:engine/view/editableelement~EditableElement\n */\nexport default class RootEditableElement extends EditableElement {\n\t/**\n\t * Creates root editable element.\n\t *\n\t * @param {module:engine/view/document~Document} document {@link module:engine/view/document~Document} that is an owner of the root.\n\t * @param {String} name Node name.\n\t */\n\tconstructor( name ) {\n\t\tsuper( name );\n\n\t\t/**\n\t\t * Name of this root inside {@link module:engine/view/document~Document} that is an owner of this root. If no\n\t\t * other name is set, `main` name is used.\n\t\t *\n\t\t * @member {String}\n\t\t */\n\t\tthis.rootName = 'main';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tis( type, name = null ) {\n\t\tif ( !name ) {\n\t\t\treturn type == 'rootElement' || super.is( type );\n\t\t} else {\n\t\t\treturn ( type == 'rootElement' && name == this.name ) || super.is( type, name );\n\t\t}\n\t}\n\n\tget rootName() {\n\t\treturn this.getCustomProperty( rootNameSymbol );\n\t}\n\n\tset rootName( rootName ) {\n\t\tthis.setCustomProperty( rootNameSymbol, rootName );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/view/rooteditableelement.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/uielement\n */\n\nimport Element from './element';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\nimport Node from './node';\n\n/**\n * UIElement class. It is used to represent UI not a content of the document.\n * This element can't be split and selection can't be placed inside this element.\n */\nexport default class UIElement extends Element {\n\t/**\n\t * Creates new instance of UIElement.\n\t *\n\t * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-uielement-cannot-add` when third parameter is passed,\n\t * to inform that usage of UIElement is incorrect (adding child nodes to UIElement is forbidden).\n\t *\n\t * @param {String} name Node name.\n\t * @param {Object|Iterable} [attributes] Collection of attributes.\n\t */\n\tconstructor( name, attributes, children ) {\n\t\tsuper( name, attributes, children );\n\n\t\t/**\n\t\t * Returns `null` because filler is not needed for UIElements.\n\t\t *\n\t\t * @method #getFillerOffset\n\t\t * @returns {null} Always returns null.\n\t\t */\n\t\tthis.getFillerOffset = getFillerOffset;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tis( type, name = null ) {\n\t\tif ( !name ) {\n\t\t\treturn type == 'uiElement' || super.is( type );\n\t\t} else {\n\t\t\treturn ( type == 'uiElement' && name == this.name ) || super.is( type, name );\n\t\t}\n\t}\n\n\t/**\n\t * Overrides {@link module:engine/view/element~Element#insertChildren} method.\n\t * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-uielement-cannot-add` to prevent adding any child nodes\n\t * to UIElement.\n\t */\n\tinsertChildren( index, nodes ) {\n\t\tif ( nodes && ( nodes instanceof Node || Array.from( nodes ).length > 0 ) ) {\n\t\t\t/**\n\t\t\t * Cannot add children to {@link module:engine/view/uielement~UIElement}.\n\t\t\t *\n\t\t\t * @error view-uielement-cannot-add\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'view-uielement-cannot-add: Cannot add child nodes to UIElement instance.' );\n\t\t}\n\t}\n}\n\n// Returns `null` because block filler is not needed for UIElements.\n//\n// @returns {null}\nfunction getFillerOffset() {\n\treturn null;\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/view/uielement.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module heading/headingengine\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport buildModelConverter from '@ckeditor/ckeditor5-engine/src/conversion/buildmodelconverter';\nimport buildViewConverter from '@ckeditor/ckeditor5-engine/src/conversion/buildviewconverter';\nimport Paragraph from '@ckeditor/ckeditor5-paragraph/src/paragraph';\nimport HeadingCommand from './headingcommand';\n\nconst defaultOptionId = 'paragraph';\n\n/**\n * The headings engine feature. It handles switching between block formats &ndash; headings and paragraph.\n * This class represents the engine part of the heading feature. See also {@link module:heading/heading~Heading}.\n *\n * @extends modules:core/plugin~Plugin\n */\nexport default class HeadingEngine extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tconstructor( editor ) {\n\t\tsuper( editor );\n\n\t\teditor.config.define( 'heading', {\n\t\t\toptions: [\n\t\t\t\t{ id: 'paragraph', element: 'p', label: 'Paragraph' },\n\t\t\t\t{ id: 'heading1', element: 'h2', label: 'Heading 1' },\n\t\t\t\t{ id: 'heading2', element: 'h3', label: 'Heading 2' },\n\t\t\t\t{ id: 'heading3', element: 'h4', label: 'Heading 3' }\n\t\t\t]\n\t\t} );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get requires() {\n\t\treturn [ Paragraph ];\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tconst editor = this.editor;\n\t\tconst data = editor.data;\n\t\tconst editing = editor.editing;\n\t\tconst options = this._getLocalizedOptions();\n\n\t\tfor ( let option of options ) {\n\t\t\t// Skip paragraph - it is defined in required Paragraph feature.\n\t\t\tif ( option.id !== defaultOptionId ) {\n\t\t\t\t// Schema.\n\t\t\t\teditor.document.schema.registerItem( option.id, '$block' );\n\n\t\t\t\t// Build converter from model to view for data and editing pipelines.\n\t\t\t\tbuildModelConverter().for( data.modelToView, editing.modelToView )\n\t\t\t\t\t.fromElement( option.id )\n\t\t\t\t\t.toElement( option.element );\n\n\t\t\t\t// Build converter from view to model for data pipeline.\n\t\t\t\tbuildViewConverter().for( data.viewToModel )\n\t\t\t\t\t.fromElement( option.element )\n\t\t\t\t\t.toElement( option.id );\n\t\t\t}\n\t\t}\n\n\t\t// Register the heading command.\n\t\tconst command = new HeadingCommand( editor, options, defaultOptionId );\n\t\teditor.commands.set( 'heading', command );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tafterInit() {\n\t\t// If the enter command is added to the editor, alter its behavior.\n\t\t// Enter at the end of a heading element should create a paragraph.\n\t\tconst editor = this.editor;\n\t\tconst command = editor.commands.get( 'heading' );\n\t\tconst enterCommand = editor.commands.get( 'enter' );\n\t\tconst options = this._getLocalizedOptions();\n\n\t\tif ( enterCommand ) {\n\t\t\tthis.listenTo( enterCommand, 'afterExecute', ( evt, data ) => {\n\t\t\t\tconst positionParent = editor.document.selection.getFirstPosition().parent;\n\t\t\t\tconst batch = data.batch;\n\t\t\t\tconst isHeading = options.some( option => option.id == positionParent.name );\n\n\t\t\t\tif ( isHeading && positionParent.name != command.defaultOption.id && positionParent.childCount === 0 ) {\n\t\t\t\t\tbatch.rename( positionParent, command.defaultOption.id );\n\t\t\t\t}\n\t\t\t} );\n\t\t}\n\t}\n\n\t/**\n\t * Returns heading options as defined in `config.heading.options` but processed to consider\n\t * editor localization, i.e. to display {@link module:heading/headingcommand~HeadingOption#label}\n\t * in the correct language.\n\t *\n\t * Note: The reason behind this method is that there's no way to use {@link utils/locale~Locale#t}\n\t * when the user config is defined because the editor does not exist yet.\n\t *\n\t * @private\n\t * @returns {Array.<module:heading/headingcommand~HeadingOption>}.\n\t */\n\t_getLocalizedOptions() {\n\t\tif ( this._cachedLocalizedOptions ) {\n\t\t\treturn this._cachedLocalizedOptions;\n\t\t}\n\n\t\tconst editor = this.editor;\n\t\tconst t = editor.t;\n\t\tconst localizedLabels = {\n\t\t\tParagraph: t( 'Paragraph' ),\n\t\t\t'Heading 1': t( 'Heading 1' ),\n\t\t\t'Heading 2': t( 'Heading 2' ),\n\t\t\t'Heading 3': t( 'Heading 3' )\n\t\t};\n\n\t\t/**\n\t\t * Cached localized version of `config.heading.options` generated by\n\t\t * {@link module:heading/headingengine~HeadingEngine#_localizedOptions}.\n\t\t *\n\t\t * @private\n\t\t * @readonly\n\t\t * @member {Array.<module:heading/headingcommand~HeadingOption>} #_cachedLocalizedOptions\n\t\t */\n\t\tthis._cachedLocalizedOptions = editor.config.get( 'heading.options' )\n\t\t\t.map( option => {\n\t\t\t\tif ( localizedLabels[ option.label ] ) {\n\t\t\t\t\t// Clone the option to avoid altering the original `config.heading.options`.\n\t\t\t\t\toption = Object.assign( {}, option, {\n\t\t\t\t\t\tlabel: localizedLabels[ option.label ]\n\t\t\t\t\t} );\n\t\t\t\t}\n\n\t\t\t\treturn option;\n\t\t\t} );\n\n\t\treturn this._cachedLocalizedOptions;\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-heading/src/headingengine.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module image/image/imageengine\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport buildModelConverter from '@ckeditor/ckeditor5-engine/src/conversion/buildmodelconverter';\nimport WidgetEngine from '../widget/widgetengine';\nimport { viewToModelImage, createImageAttributeConverter } from './converters';\nimport { toImageWidget } from './utils';\nimport ViewContainerElement from '@ckeditor/ckeditor5-engine/src/view/containerelement';\nimport ViewEmptyElement from '@ckeditor/ckeditor5-engine/src/view/emptyelement';\n\n/**\n * The image engine plugin.\n * Registers `image` as a block element in document's schema and allows it to have two attributes: `src` and `alt`.\n * Registers converters for editing and data pipelines.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class ImageEngine extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get requires() {\n\t\treturn [ WidgetEngine ];\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tconst editor = this.editor;\n\t\tconst doc = editor.document;\n\t\tconst schema = doc.schema;\n\t\tconst data = editor.data;\n\t\tconst editing = editor.editing;\n\t\tconst t = editor.t;\n\n\t\t// Configure schema.\n\t\tschema.registerItem( 'image' );\n\t\tschema.requireAttributes( 'image', [ 'src' ] );\n\t\tschema.allow( { name: 'image', attributes: [ 'alt', 'src' ], inside: '$root' } );\n\t\tschema.objects.add( 'image' );\n\n\t\t// Build converter from model to view for data pipeline.\n\t\tbuildModelConverter().for( data.modelToView )\n\t\t\t.fromElement( 'image' )\n\t\t\t.toElement( () => createImageViewElement() );\n\n\t\t// Build converter from model to view for editing pipeline.\n\t\tbuildModelConverter().for( editing.modelToView )\n\t\t\t.fromElement( 'image' )\n\t\t\t.toElement( () => toImageWidget( createImageViewElement(), t( 'image widget' ) ) );\n\n\t\tcreateImageAttributeConverter( [ editing.modelToView, data.modelToView ], 'src' );\n\t\tcreateImageAttributeConverter( [ editing.modelToView, data.modelToView ], 'alt' );\n\n\t\t// Converter for figure element from view to model.\n\t\tdata.viewToModel.on( 'element:figure', viewToModelImage() );\n\t}\n}\n\n// Creates view element representing the image.\n//\n//\t\t<figure class=\"image\"><img></img></figure>\n//\n// Note that `alt` and `src` attributes are converted separately, so they're not included.\n//\n// @private\n// @return {module:engine/view/containerelement~ContainerElement}\nexport function createImageViewElement() {\n\treturn new ViewContainerElement( 'figure', { class: 'image' }, new ViewEmptyElement( 'img' ) );\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-image/src/image/imageengine.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module image/image/ui/imageballoonpanel\n */\n\nimport throttle from '@ckeditor/ckeditor5-utils/src/lib/lodash/throttle';\nimport global from '@ckeditor/ckeditor5-utils/src/dom/global';\nimport BalloonPanelView from '@ckeditor/ckeditor5-ui/src/balloonpanel/balloonpanelview';\nimport { isImageWidget } from '../utils';\n\nconst arrowVOffset = BalloonPanelView.arrowVerticalOffset;\nconst positions = {\n\t//\t   [text range]\n\t//\t        ^\n\t//\t+-----------------+\n\t//\t|     Balloon     |\n\t//\t+-----------------+\n\tsouth( targetRect, balloonRect ) {\n\t\treturn {\n\t\t\ttop: targetRect.bottom + arrowVOffset,\n\t\t\tleft: targetRect.left + targetRect.width / 2 - balloonRect.width / 2,\n\t\t\tname: 's'\n\t\t};\n\t},\n\n\t//\t+-----------------+\n\t//\t|     Balloon     |\n\t//\t+-----------------+\n\t//\t        V\n\t//\t   [text range]\n\tnorth( targetRect, balloonRect ) {\n\t\treturn {\n\t\t\ttop: targetRect.top - balloonRect.height - arrowVOffset,\n\t\t\tleft: targetRect.left + targetRect.width / 2 - balloonRect.width / 2,\n\t\t\tname: 'n'\n\t\t};\n\t}\n};\n\n/**\n * Image balloon panel class. It extends {module:ui/balloonpanel/balloonpanelview~BalloonPanelView} by adding helpers\n * to use with image widgets. It sets proper positioning on `scroll` and `resize` events and hides the panel when\n * image is no longer selected or focus is lost.\n *\n * @extends module:ui/balloonpanel/balloonpanelview~BalloonPanelView\n */\nexport default class ImageBalloonPanelView extends BalloonPanelView {\n\t/**\n\t * @inheritDoc\n\t */\n\tconstructor( editor ) {\n\t\tsuper( editor.locale );\n\n\t\tthis.editor = editor;\n\t\tconst editingView = editor.editing.view;\n\n\t\t// Hide the balloon if editor had focus and now focus is lost.\n\t\tthis.listenTo( editor.ui.focusTracker, 'change:isFocused', ( evt, name, is, was ) => {\n\t\t\tif ( was && !is ) {\n\t\t\t\tthis.detach();\n\t\t\t}\n\t\t} );\n\n\t\t// Hide the balloon if no image is currently selected.\n\t\teditor.listenTo( editingView, 'render', () => {\n\t\t\tconst selectedElement = editingView.selection.getSelectedElement();\n\n\t\t\tif ( !selectedElement || !isImageWidget( selectedElement ) ) {\n\t\t\t\tthis.detach();\n\t\t\t}\n\t\t}, { priority: 'low' } );\n\n\t\t/**\n\t\t * Wraps {@link #_attach} method with throttle function that will fire it not more than every 100ms.\n\t\t * It is used as `scroll` and `resize` callback.\n\t\t *\n\t\t * @private\n\t\t * @member {Function} #_throttledAttach\n\t\t */\n\t\tthis._throttledAttach = throttle( () => {\n\t\t\tthis._attach();\n\t\t}, 100 );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\t// Let the focusTracker know about new focusable UI element.\n\t\tthis.editor.ui.focusTracker.add( this.element );\n\n\t\treturn super.init();\n\t}\n\n\t/**\n\t * Attaches the panel and enables `scroll` and `resize` listeners.\n\t */\n\tattach() {\n\t\tthis._attach();\n\t\tthis.editor.ui.view.listenTo( global.window, 'scroll', this._throttledAttach );\n\t\tthis.editor.ui.view.listenTo( global.window, 'resize', this._throttledAttach );\n\t}\n\n\t/**\n\t * Detaches the panel and disables `scroll` and `resize` listeners.\n\t */\n\tdetach() {\n\t\tthis.hide();\n\t\tthis.editor.ui.view.stopListening( global.window, 'scroll', this._throttledAttach );\n\t\tthis.editor.ui.view.stopListening( global.window, 'resize', this._throttledAttach );\n\t}\n\n\t/**\n\t * Attaches the panel to the first selection range.\n\t *\n\t * @private\n\t */\n\t_attach() {\n\t\tconst editingView = this.editor.editing.view;\n\n\t\tthis.attachTo( {\n\t\t\ttarget: editingView.domConverter.viewRangeToDom( editingView.selection.getFirstRange() ),\n\t\t\tpositions: [ positions.north, positions.south ]\n\t\t} );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-image/src/image/ui/imageballoonpanelview.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module image/imagetoolbar\n */\n\nimport Template from '@ckeditor/ckeditor5-ui/src/template';\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport ToolbarView from '@ckeditor/ckeditor5-ui/src/toolbar/toolbarview';\nimport { isImageWidget } from './image/utils';\nimport ImageBalloonPanel from './image/ui/imageballoonpanelview';\n\n/**\n * Image toolbar class. Creates image toolbar placed inside balloon panel that is showed when image widget is selected.\n * Toolbar components are created using editor's {@link module:ui/componentfactory~ComponentFactory ComponentFactory}\n * based on {@link module:core/editor/editor~Editor#config configuration} stored under `image.toolbar`.\n * Other plugins can add new components to the default toolbar configuration by pushing them to `image.defaultToolbar`\n * configuration. Default configuration is used when `image.toolbar` config is not present.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class ImageToolbar extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tconstructor( editor ) {\n\t\tsuper( editor );\n\n\t\teditor.config.set( 'image.defaultToolbar', [] );\n\n\t\t/**\n\t\t * When set to `true`, toolbar will be repositioned and showed on each render event and focus change.\n\t\t * Set to `false` to temporary disable the image toolbar.\n\t\t *\n\t\t * @member {Boolean}\n\t\t */\n\t\tthis.isEnabled = true;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tafterInit() {\n\t\tconst editor = this.editor;\n\t\tconst toolbarConfig = editor.config.get( 'image.toolbar' ) || editor.config.get( 'image.defaultToolbar' );\n\n\t\t// Don't add the toolbar if there is no configuration.\n\t\tif ( !toolbarConfig.length ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst panel = this._panel = new ImageBalloonPanel( editor );\n\t\tconst promises = [];\n\t\tconst toolbar = new ToolbarView();\n\n\t\t// Add CSS class to the panel.\n\t\tTemplate.extend( panel.template, {\n\t\t\tattributes: {\n\t\t\t\tclass: [\n\t\t\t\t\t'ck-toolbar__container'\n\t\t\t\t]\n\t\t\t}\n\t\t} );\n\n\t\t// Add toolbar to balloon panel.\n\t\tpromises.push( panel.content.add( toolbar ) );\n\n\t\t// Add buttons to the toolbar.\n\t\tpromises.push( toolbar.fillFromConfig( toolbarConfig, editor.ui.componentFactory ) );\n\n\t\t// Add balloon panel to editor's UI.\n\t\tpromises.push( editor.ui.view.body.add( panel ) );\n\n\t\t// Show balloon panel each time image widget is selected.\n\t\tthis.listenTo( this.editor.editing.view, 'render', () => {\n\t\t\tif ( this.isEnabled ) {\n\t\t\t\tthis.show();\n\t\t\t}\n\t\t}, { priority: 'low' } );\n\n\t\t// There is no render method after focus is back in editor, we need to check if balloon panel should be visible.\n\t\tthis.listenTo( editor.ui.focusTracker, 'change:isFocused', ( evt, name, is, was ) => {\n\t\t\tif ( !was && is && this.isEnabled ) {\n\t\t\t\tthis.show();\n\t\t\t}\n\t\t} );\n\n\t\treturn Promise.all( promises );\n\t}\n\n\t/**\n\t * Shows the toolbar.\n\t */\n\tshow() {\n\t\tconst selectedElement = this.editor.editing.view.selection.getSelectedElement();\n\n\t\tif ( selectedElement && isImageWidget( selectedElement ) ) {\n\t\t\tthis._panel.attach();\n\t\t}\n\t}\n\n\t/**\n\t * Hides the toolbar.\n\t */\n\thide() {\n\t\tthis._panel.detach();\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-image/src/imagetoolbar.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module image/widget/widgetengine\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport { WIDGET_SELECTED_CLASS_NAME, isWidget, getLabel } from './utils';\n\n/**\n * The widget engine plugin.\n * Registers model to view selection converter for editing pipeline. It is hooked after default selection conversion.\n * If converted selection is placed around widget element, selection is marked as fake. Additionally, proper CSS class\n * is added to indicate that widget has been selected.\n *\n * @extends module:core/plugin~Plugin.\n */\nexport default class WidgetEngine extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tlet previouslySelected;\n\n\t\t// Model to view selection converter.\n\t\t// Converts selection placed over widget element to fake selection\n\t\tthis.editor.editing.modelToView.on( 'selection', ( evt, data, consumable, conversionApi ) => {\n\t\t\t// Remove selected class from previously selected widget.\n\t\t\tif ( previouslySelected && previouslySelected.hasClass( WIDGET_SELECTED_CLASS_NAME ) ) {\n\t\t\t\tpreviouslySelected.removeClass( WIDGET_SELECTED_CLASS_NAME );\n\t\t\t}\n\n\t\t\tconst viewSelection = conversionApi.viewSelection;\n\n\t\t\t// Check if widget was clicked or some sub-element.\n\t\t\tconst selectedElement = viewSelection.getSelectedElement();\n\n\t\t\tif ( !selectedElement || !isWidget( selectedElement ) ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tviewSelection.setFake( true, { label: getLabel( selectedElement ) } );\n\t\t\tselectedElement.addClass( WIDGET_SELECTED_CLASS_NAME );\n\t\t\tpreviouslySelected = selectedElement;\n\t\t}, { priority: 'low' } );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-image/src/widget/widgetengine.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module link/findlinkrange\n */\n\nimport Range from '@ckeditor/ckeditor5-engine/src/model/range';\nimport Position from '@ckeditor/ckeditor5-engine/src/model/position';\n\n/**\n * Walk backward and forward from start position, node by node as long as they have the same `linkHref` attribute value and return\n * {@link module:engine/model/range~Range Range} with found link.\n *\n * @param {module:engine/model/position~Position} position Start position.\n * @param {String} value `linkHref` attribute value.\n * @returns {module:engine/model/range~Range} Link range.\n */\nexport default function findLinkRange( position, value ) {\n\treturn new Range( _findBound( position, value, true ), _findBound( position, value, false ) );\n}\n\n// Walk forward or backward (depends on `lookBack` flag), node by node as long as they have the same `linkHref` attribute value\n// and return position just before or after (depends on `lookBack` flag) last matched node.\n//\n// @param {module:engine/model/position~Position} position Start position.\n// @param {String} value `linkHref` attribute value.\n// @param {Boolean} lookBack Whether walk direction is forward `false` or backward `true`.\n// @returns {module:engine/model/position~Position} Position just before last matched node.\nfunction _findBound( position, value, lookBack ) {\n\t// Get node before or after position (depends on `lookBack` flag).\n\t// When position is inside text node then start searching from text node.\n\tlet node = position.textNode || ( lookBack ? position.nodeBefore : position.nodeAfter );\n\n\tlet lastNode = null;\n\n\twhile ( node && node.getAttribute( 'linkHref' ) == value ) {\n\t\tlastNode = node;\n\t\tnode = lookBack ? node.previousSibling : node.nextSibling;\n\t}\n\n\treturn lastNode ? Position.createAt( lastNode, lookBack ? 'before' : 'after' ) : position;\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-link/src/findlinkrange.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module link/linkelement\n */\n\nimport AttributeElement from '@ckeditor/ckeditor5-engine/src/view/attributeelement';\n\n/**\n * This class is to mark specific {@link module:engine/view/node~Node} as {@link module:link/linkelement~LinkElement}.\n * E.g. There could be a situation when different features will create nodes with the same names,\n * and hence they must be identified somehow.\n *\n * @extends module:engine/view/attributelement~AttributeElement\n */\nexport default class LinkElement extends AttributeElement {\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-link/src/linkelement.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module list/listengine\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport ListCommand from './listcommand';\nimport IndentCommand from './indentcommand';\n\nimport {\n\tcleanList,\n\tmodelViewInsertion,\n\tmodelViewChangeType,\n\tmodelViewMergeAfter,\n\tmodelViewRemove,\n\tmodelViewSplitOnInsert,\n\tmodelViewChangeIndent,\n\tviewModelConverter,\n\tmodelToViewPosition,\n\tviewToModelPosition\n} from './converters';\n\n/**\n * The engine of the lists feature. It handles creating, editing and removing lists and list items.\n * It registers the `numberedList`, `bulletedList`, `indentList` and `outdentList` commands.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class ListEngine extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tconst editor = this.editor;\n\n\t\t// Schema.\n\t\tconst schema = editor.document.schema;\n\t\tschema.registerItem( 'listItem', '$block' );\n\t\tschema.allow( {\n\t\t\tname: 'listItem',\n\t\t\tinside: '$root',\n\t\t\tattributes: [ 'type', 'indent' ]\n\t\t} );\n\t\tschema.requireAttributes( 'listItem', [ 'type', 'indent' ] );\n\n\t\t// Converters.\n\t\tconst data = editor.data;\n\t\tconst editing = editor.editing;\n\n\t\tediting.mapper.on( 'modelToViewPosition', modelToViewPosition );\n\t\tediting.mapper.on( 'viewToModelPosition', viewToModelPosition );\n\t\tdata.mapper.on( 'modelToViewPosition', modelToViewPosition );\n\n\t\tediting.modelToView.on( 'insert', modelViewSplitOnInsert, { priority: 'high' } );\n\t\tediting.modelToView.on( 'insert:listItem', modelViewInsertion );\n\t\tdata.modelToView.on( 'insert', modelViewSplitOnInsert, { priority: 'high' } );\n\t\tdata.modelToView.on( 'insert:listItem', modelViewInsertion );\n\n\t\t// Only change converter is needed. List item's type attribute is required, so it's adding is handled when\n\t\t// list item is added and you cannot remove it.\n\t\tediting.modelToView.on( 'changeAttribute:type:listItem', modelViewChangeType );\n\t\tdata.modelToView.on( 'changeAttribute:type:listItem', modelViewChangeType );\n\n\t\tediting.modelToView.on( 'remove:listItem', modelViewRemove );\n\t\tediting.modelToView.on( 'remove', modelViewMergeAfter, { priority: 'low' } );\n\t\tdata.modelToView.on( 'remove:listItem', modelViewRemove );\n\t\tdata.modelToView.on( 'remove', modelViewMergeAfter, { priority: 'low' } );\n\n\t\tediting.modelToView.on( 'changeAttribute:indent:listItem', modelViewChangeIndent );\n\t\tdata.modelToView.on( 'changeAttribute:indent:listItem', modelViewChangeIndent );\n\n\t\tdata.viewToModel.on( 'element:li', viewModelConverter );\n\t\tdata.viewToModel.on( 'element:ul', cleanList, { priority: 'high' } );\n\t\tdata.viewToModel.on( 'element:ol', cleanList, { priority: 'high' } );\n\n\t\t// Register commands for numbered and bulleted list.\n\t\teditor.commands.set( 'numberedList', new ListCommand( editor, 'numbered' ) );\n\t\teditor.commands.set( 'bulletedList', new ListCommand( editor, 'bulleted' ) );\n\n\t\t// Register commands for indenting.\n\t\teditor.commands.set( 'indentList', new IndentCommand( editor, 'forward' ) );\n\t\teditor.commands.set( 'outdentList', new IndentCommand( editor, 'backward' ) );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-list/src/listengine.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * Utilities used in modules from {@link module:list/list list} package.\n *\n * @module list/utils\n */\n\n/**\n * For given {@link module:engine/model/position~Position position}, returns the closest ancestor of that position which is a\n * `listItem` element.\n *\n * @param {module:engine/model/position~Position} position Position which ancestor should be check looking for `listItem` element.\n * @returns {module:engine/model/element~Element|null} Element with `listItem` name that is a closest ancestor of given `position`, or\n * `null` if neither of `position` ancestors is a `listItem`.\n */\nexport function getClosestListItem( position ) {\n\treturn Array.from( position.getAncestors() ).find( ( parent ) => parent.name == 'listItem' ) || null;\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-list/src/utils.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module paragraph/paragraph\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\n\nimport ModelElement from '@ckeditor/ckeditor5-engine/src/model/element';\nimport ModelPosition from '@ckeditor/ckeditor5-engine/src/model/position';\nimport ModelRange from '@ckeditor/ckeditor5-engine/src/model/range';\nimport ViewElement from '@ckeditor/ckeditor5-engine/src/view/element';\nimport ViewRange from '@ckeditor/ckeditor5-engine/src/view/range';\n\nimport modelWriter from '@ckeditor/ckeditor5-engine/src/model/writer';\nimport buildModelConverter from '@ckeditor/ckeditor5-engine/src/conversion/buildmodelconverter';\nimport buildViewConverter from '@ckeditor/ckeditor5-engine/src/conversion/buildviewconverter';\n\nimport isArray from '@ckeditor/ckeditor5-utils/src/lib/lodash/isArray';\n\n/**\n * The paragraph feature for the editor.\n * Introduces the `<paragraph>` element in the model which renders as a `<p>` element in the DOM and data.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class Paragraph extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tconst editor = this.editor;\n\t\tconst doc = editor.document;\n\t\tconst data = editor.data;\n\t\tconst editing = editor.editing;\n\n\t\t// Schema.\n\t\tdoc.schema.registerItem( 'paragraph', '$block' );\n\n\t\t// Build converter from model to view for data and editing pipelines.\n\t\tbuildModelConverter().for( data.modelToView, editing.modelToView )\n\t\t\t.fromElement( 'paragraph' )\n\t\t\t.toElement( 'p' );\n\n\t\t// Build converter from view to model for data pipeline.\n\t\tbuildViewConverter().for( data.viewToModel )\n\t\t\t.fromElement( 'p' )\n\t\t\t.toElement( 'paragraph' );\n\n\t\t// Autoparagraph text.\n\t\tdata.viewToModel.on( 'text', ( evt, data, consumable, conversionApi ) => {\n\t\t\tautoparagraphText( doc, evt, data, consumable, conversionApi );\n\t\t}, { priority: 'lowest' } );\n\n\t\t// Post-fix potential subsequent paragraphs created by autoparagraphText().\n\t\tdata.viewToModel.on( 'element', mergeSubsequentParagraphs, { priority: 'lowest' } );\n\t\tdata.viewToModel.on( 'documentFragment', mergeSubsequentParagraphs, { priority: 'lowest' } );\n\n\t\t// Convert paragraph-like elements to paragraphs if they weren't consumed.\n\t\t// It's a 'low' priority in order to hook in before the default 'element' converter\n\t\t// which would then convert children before handling this element.\n\t\tdata.viewToModel.on( 'element', ( evt, data, consumable, conversionApi ) => {\n\t\t\tautoparagraphParagraphLikeElements( doc, evt, data, consumable, conversionApi );\n\t\t}, { priority: 'low' } );\n\t}\n}\n\n/**\n * List of element names which should be treated by the autoparagraphing algorithms as\n * paragraph-like. This means that e.g. the following content:\n *\n *\t\t<h1>Foo</h1>\n *\t\t<table>\n *\t\t\t<tr>\n *\t\t\t\t<td>X</td>\n *\t\t\t\t<td>\n *\t\t\t\t\t<ul>\n *\t\t\t\t\t\t<li>Y</li>\n *\t\t\t\t\t\t<li>Z</li>\n *\t\t\t\t\t</ul>\n *\t\t\t\t</td>\n *\t\t\t</tr>\n *\t\t</table>\n *\n * Contains five paragraph-like elements – `<h1>` and two `<td>` and two `<li>`.\n * Hence, if none of the features is going to convert  those elements the above content will be automatically handled\n * by the paragraph feature and converted to:\n *\n *\t\t<p>Foo</p>\n *\t\t<p>X</p>\n *\t\t<p>Y</p>\n *\t\t<p>Z</p>\n *\n * Note: The `<td>` containing two `<li>` elements was ignored – the inner-most paragraph-like elements\n * have priority upon conversion.\n *\n * @member {Set.<String>} module:paragraph/paragraph~Paragraph.paragraphLikeElements\n */\nParagraph.paragraphLikeElements = new Set( [\n\t'blockquote',\n\t'dd',\n\t'div',\n\t'dt',\n\t'h1',\n\t'h2',\n\t'h3',\n\t'h4',\n\t'h5',\n\t'h6',\n\t'li',\n\t'p',\n\t'td'\n] );\n\nconst paragraphsToMerge = new WeakSet();\n\nfunction autoparagraphText( doc, evt, data, consumable, conversionApi ) {\n\t// If text wasn't consumed by the default converter...\n\tif ( !consumable.test( data.input ) ) {\n\t\treturn;\n\t}\n\n\t// And paragraph is allowed in this context...\n\tif ( !doc.schema.check( { name: 'paragraph', inside: data.context } ) ) {\n\t\treturn;\n\t}\n\n\t// Let's do autoparagraphing.\n\n\tconst paragraph = new ModelElement( 'paragraph' );\n\n\tparagraphsToMerge.add( paragraph );\n\n\tdata.context.push( paragraph );\n\n\tconst text = conversionApi.convertItem( data.input, consumable, data );\n\n\tif ( text ) {\n\t\tdata.output = paragraph;\n\t\tparagraph.appendChildren( text );\n\t}\n\n\tdata.context.pop();\n}\n\nfunction autoparagraphParagraphLikeElements( doc, evt, data, consumable, conversionApi ) {\n\t// If this is a paragraph-like element...\n\tif ( !Paragraph.paragraphLikeElements.has( data.input.name ) ) {\n\t\treturn;\n\t}\n\n\t// Which wasn't consumed by its own converter...\n\tif ( !consumable.test( data.input, { name: true } ) ) {\n\t\treturn;\n\t}\n\n\t// And there are no other paragraph-like elements inside this tree...\n\tif ( hasParagraphLikeContent( data.input ) ) {\n\t\treturn;\n\t}\n\n\t// And paragraph is allowed in this context...\n\tif ( !doc.schema.check( { name: 'paragraph', inside: data.context } ) ) {\n\t\treturn;\n\t}\n\n\t// Let's convert this element to a paragraph and then all its children.\n\n\tconsumable.consume( data.input, { name: true } );\n\n\tconst paragraph = new ModelElement( 'paragraph' );\n\n\tdata.context.push( paragraph );\n\n\tconst convertedChildren = conversionApi.convertChildren( data.input, consumable, data );\n\n\tparagraph.appendChildren( modelWriter.normalizeNodes( convertedChildren ) );\n\n\t// Remove the created paragraph from the stack for other converters.\n\t// See https://github.com/ckeditor/ckeditor5-engine/issues/736\n\tdata.context.pop();\n\n\tdata.output = paragraph;\n}\n\n// Merges subsequent paragraphs if they should be merged (see shouldMerge).\nfunction mergeSubsequentParagraphs( evt, data ) {\n\tif ( !data.output ) {\n\t\treturn;\n\t}\n\n\tlet node;\n\n\tif ( isArray( data.output ) ) {\n\t\tnode = data.output[ 0 ];\n\t} else {\n\t\tnode = data.output.getChild( 0 );\n\t}\n\n\twhile ( node && node.nextSibling ) {\n\t\tconst nextSibling = node.nextSibling;\n\n\t\tif ( paragraphsToMerge.has( node ) && paragraphsToMerge.has( nextSibling ) ) {\n\t\t\tmodelWriter.insert( ModelPosition.createAt( node, 'end' ), Array.from( nextSibling.getChildren() ) );\n\t\t\tmodelWriter.remove( ModelRange.createOn( nextSibling ) );\n\t\t} else {\n\t\t\tnode = node.nextSibling;\n\t\t}\n\t}\n}\n\n// Checks whether an element has paragraph-like descendant.\nfunction hasParagraphLikeContent( element ) {\n\tconst range = ViewRange.createIn( element );\n\n\tfor ( const value of range ) {\n\t\tif ( value.item instanceof ViewElement && Paragraph.paragraphLikeElements.has( value.item.name ) ) {\n\t\t\treturn true;\n\t\t}\n\t}\n\n\treturn false;\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-paragraph/src/paragraph.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module typing/changebuffer\n */\n\nimport count from '@ckeditor/ckeditor5-utils/src/count';\n\n/**\n * Change buffer allows to group atomic changes (like characters that have been typed) into\n * {@link module:engine/model/batch~Batch batches}.\n *\n * Batches represent single undo steps, hence changes added to one single batch are undone together.\n *\n * The buffer has a configurable limit of atomic changes that it can accommodate. After the limit was\n * exceeded (see {@link ~ChangeBuffer#input}), a new batch is created in {@link ~ChangeBuffer#batch}.\n *\n * To use the change buffer you need to let it know about the number of changes that were added to the batch:\n *\n *\t\tconst buffer = new ChangeBuffer( document, LIMIT );\n *\n *\t\t// Later on in your feature:\n *\t\tbuffer.batch.insert( pos, insertedCharacters );\n *\t\tbuffer.input( insertedCharacters.length );\n *\n */\nexport default class ChangeBuffer {\n\t/**\n\t * Creates a new instance of the change buffer.\n\t *\n\t * @param {module:engine/model/document~Document} document\n\t * @param {Number} [limit=20] The maximum number of atomic changes which can be contained in one batch.\n\t */\n\tconstructor( doc, limit = 20 ) {\n\t\t/**\n\t\t * The document instance.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/model/document~Document} #document\n\t\t */\n\t\tthis.document = doc;\n\n\t\t/**\n\t\t * The number of atomic changes in the buffer. Once it exceeds the {@link #limit},\n\t\t * the {@link #batch batch} is set to a new one.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Number} #size\n\t\t */\n\t\tthis.size = 0;\n\n\t\t/**\n\t\t * The maximum number of atomic changes which can be contained in one batch.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Number} #limit\n\t\t */\n\t\tthis.limit = limit;\n\n\t\tthis._changeCallback = ( evt, type, changes, batch ) => {\n\t\t\tthis._onBatch( batch );\n\t\t};\n\n\t\tdoc.on( 'change', this._changeCallback );\n\n\t\t/**\n\t\t * The current batch instance.\n\t\t *\n\t\t * @private\n\t\t * @member #_batch\n\t\t */\n\n\t\t/**\n\t\t * The callback to document the change event which later needs to be removed.\n\t\t *\n\t\t * @private\n\t\t * @member #_changeCallback\n\t\t */\n\t}\n\n\t/**\n\t * The current batch to which a feature should add its deltas. Once the {@link #size}\n\t * is reached or exceeds the {@link #limit}, the batch is set to a new instance and the size is reset.\n\t *\n\t * @type {engine.treeModel.batch.Batch}\n\t */\n\tget batch() {\n\t\tif ( !this._batch ) {\n\t\t\tthis._batch = this.document.batch();\n\t\t}\n\n\t\treturn this._batch;\n\t}\n\n\t/**\n\t * The input number of changes into the buffer. Once the {@link #size} is\n\t * reached or exceeds the {@link #limit}, the batch is set to a new instance and the size is reset.\n\t *\n\t * @param {Number} changeCount The number of atomic changes to input.\n\t */\n\tinput( changeCount ) {\n\t\tthis.size += changeCount;\n\n\t\tif ( this.size >= this.limit ) {\n\t\t\tthis._reset();\n\t\t}\n\t}\n\n\t/**\n\t * Destroys the buffer.\n\t */\n\tdestroy() {\n\t\tthis.document.off( 'change', this._changeCallback );\n\t}\n\n\t/**\n\t * The method to be called in order to notify the buffer about batches which appeared in the document.\n\t * The method will check whether it is a new batch and in that case the buffer will be flushed.\n\t *\n\t * The reason why the buffer needs to be flushed whenever a new batch appears is that the changes added afterwards\n\t * should be added to a new batch. For instance, when the  user types, then inserts an image, and then types again,\n\t * the characters typed after inserting the image should be added to a different batch than the characters typed before.\n\t *\n\t * @private\n\t * @param {module:engine/model/batch~Batch} batch The batch which appears in the document.\n\t */\n\t_onBatch( batch ) {\n\t\t// One operation means a newly created batch.\n\t\tif ( batch.type != 'transparent' && batch !== this._batch && count( batch.getOperations() ) <= 1 ) {\n\t\t\tthis._reset();\n\t\t}\n\t}\n\n\t/**\n\t * Resets the change buffer.\n\t *\n\t * @private\n\t */\n\t_reset() {\n\t\tthis._batch = null;\n\t\tthis.size = 0;\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-typing/src/changebuffer.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/balloonpanel/balloonpanelview\n */\n\n/* globals document */\n\nimport View from '../view';\nimport Template from '../template';\nimport { getOptimalPosition } from '@ckeditor/ckeditor5-utils/src/dom/position';\nimport toUnit from '@ckeditor/ckeditor5-utils/src/dom/tounit';\n\nconst toPx = toUnit( 'px' );\n\n/**\n * The balloon panel view class.\n *\n * @extends module:ui/view~View\n */\nexport default class BalloonPanelView extends View {\n\t/**\n\t * @inheritDoc\n\t */\n\tconstructor( locale ) {\n\t\tsuper( locale );\n\n\t\tconst bind = this.bindTemplate;\n\n\t\t/**\n\t\t * The absolute top position of the balloon panel in pixels.\n\t\t *\n\t\t * @observable\n\t\t * @default 0\n\t\t * @member {Number} #top\n\t\t */\n\t\tthis.set( 'top', 0 );\n\n\t\t/**\n\t\t * The absolute left position of the balloon panel in pixels.\n\t\t *\n\t\t * @observable\n\t\t * @default 0\n\t\t * @member {Number} #left\n\t\t */\n\t\tthis.set( 'left', 0 );\n\n\t\t/**\n\t\t * Balloon panel's current position. The position name is reflected in the CSS class set\n\t\t * to the balloon, i.e. `.ck-balloon-panel_arrow_se` for \"se\" position. The class\n\t\t * controls the minor aspects of the balloon's visual appearance like placement\n\t\t * of the \"arrow\". To support a new position, an additional CSS must be created.\n\t\t *\n\t\t * Default position names correspond with {@link #defaultPositions}.\n\t\t *\n\t\t * @observable\n\t\t * @default 'se'\n\t\t * @member {'se'|'sw'|'ne'|'nw'} #position\n\t\t */\n\t\tthis.set( 'position', 'se' );\n\n\t\t/**\n\t\t * Controls whether the balloon panel is visible or not.\n\t\t *\n\t\t * @observable\n\t\t * @default false\n\t\t * @member {Boolean} #isVisible\n\t\t */\n\t\tthis.set( 'isVisible', false );\n\n\t\t/**\n\t\t * Max width of the balloon panel, as in CSS.\n\t\t *\n\t\t * @observable\n\t\t * @member {Number} #maxWidth\n\t\t */\n\n\t\t/**\n\t\t * Collection of the child views which creates balloon panel contents.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:ui/viewcollection~ViewCollection}\n\t\t */\n\t\tthis.content = this.createCollection();\n\n\t\tthis.template = new Template( {\n\t\t\ttag: 'div',\n\t\t\tattributes: {\n\t\t\t\tclass: [\n\t\t\t\t\t'ck-balloon-panel',\n\t\t\t\t\tbind.to( 'position', ( value ) => `ck-balloon-panel_arrow_${ value }` ),\n\t\t\t\t\tbind.if( 'isVisible', 'ck-balloon-panel_visible' )\n\t\t\t\t],\n\n\t\t\t\tstyle: {\n\t\t\t\t\ttop: bind.to( 'top', toPx ),\n\t\t\t\t\tleft: bind.to( 'left', toPx ),\n\t\t\t\t\tmaxWidth: bind.to( 'maxWidth', toPx )\n\t\t\t\t},\n\n\t\t\t\t// Make this element `focusable` to be available for adding to FocusTracker.\n\t\t\t\ttabindex: -1\n\t\t\t},\n\n\t\t\tchildren: this.content\n\t\t} );\n\t}\n\n\t/**\n\t * Shows the balloon panel.\n\t *\n\t * See {@link #isVisible}.\n\t */\n\tshow() {\n\t\tthis.isVisible = true;\n\t}\n\n\t/**\n\t * Hides the balloon panel.\n\t *\n\t * See {@link #isVisible}.\n\t */\n\thide() {\n\t\tthis.isVisible = false;\n\t}\n\n\t/**\n\t * Attaches the balloon panel to a specified DOM element or range with a smart heuristics.\n\t *\n\t * See {@link @link module:utils/dom/position~getOptimalPosition}.\n\t *\n\t * TODO: More docs and examples.\n\t *\n\t * @param {module:utils/dom/position~Options} options Positioning options compatible with\n\t * {@link module:utils/dom/position~getOptimalPosition}. Default `positions` array is\n\t * {@link module:ui/balloonpanel/balloonpanelview~BalloonPanelView.defaultPositions}.\n\t */\n\tattachTo( options ) {\n\t\tthis.show();\n\n\t\tconst defaultPositions = BalloonPanelView.defaultPositions;\n\t\tconst positionOptions = Object.assign( {}, {\n\t\t\telement: this.element,\n\t\t\tpositions: [\n\t\t\t\tdefaultPositions.se,\n\t\t\t\tdefaultPositions.sw,\n\t\t\t\tdefaultPositions.ne,\n\t\t\t\tdefaultPositions.nw\n\t\t\t],\n\t\t\tlimiter: document.body,\n\t\t\tfitInViewport: true\n\t\t}, options );\n\n\t\tconst { top, left, name: position } = getOptimalPosition( positionOptions );\n\n\t\tObject.assign( this, { top, left, position } );\n\t}\n}\n\n/**\n * A horizontal offset of the arrow tip from the edge of the balloon. Controlled by CSS.\n *\n *\t\t +-----|---------...\n *\t\t |     |\n *\t\t |     |\n *\t\t |     |\n *\t\t |     |\n *\t\t +--+  |  +------...\n *\t\t     \\ | /\n *\t\t      \\|/\n *\t    >|-----|<---------------- horizontal offset\n *\n * @default 30\n * @member {Number} module:ui/balloonpanel/balloonpanelview~BalloonPanelView.arrowHorizontalOffset\n */\nBalloonPanelView.arrowHorizontalOffset = 30;\n\n/**\n * A vertical offset of the arrow from the edge of the balloon. Controlled by CSS.\n *\n *\t\t +-------------...\n *\t\t |\n *\t\t |\n *\t\t |                      /-- vertical offset\n *\t\t |                     V\n *\t\t +--+    +-----...    ---------\n *\t\t     \\  /              |\n *\t\t      \\/               |\n *\t\t-------------------------------\n *\t\t                       ^\n *\n * @default 15\n * @member {Number} module:ui/balloonpanel/balloonpanelview~BalloonPanelView.arrowVerticalOffset\n */\nBalloonPanelView.arrowVerticalOffset = 15;\n\n/**\n * A default set of positioning functions used by the balloon panel view\n * when attaching using {@link #attachTo} method.\n *\n * The available positioning functions are as follows:\n *\n * * South east:\n *\n *\t\t[ Target ]\n *\t\t    ^\n *\t\t+-----------------+\n *\t\t|     Balloon     |\n *\t\t+-----------------+\n *\n *\n * * South west:\n *\n *\t\t         [ Target ]\n *\t\t              ^\n *\t\t+-----------------+\n *\t\t|     Balloon     |\n *\t\t+-----------------+\n *\n *\n * * North east:\n *\n *\t\t+-----------------+\n *\t\t|     Balloon     |\n *\t\t+-----------------+\n *\t\t    V\n *\t\t[ Target ]\n *\n *\n * * North west:\n *\n *\t\t+-----------------+\n *\t\t|     Balloon     |\n *\t\t+-----------------+\n *\t\t              V\n *\t\t         [ Target ]\n *\n * See {@link #attachTo}.\n *\n * Positioning functions must be compatible with {@link module:utils/dom/position~Position}.\n *\n * The name that position function returns will be reflected in balloon panel's class that\n * controls the placement of the \"arrow\". See {@link #position} to learn more.\n *\n * @member {Object} module:ui/balloonpanel/balloonpanelview~BalloonPanelView.defaultPositions\n */\nBalloonPanelView.defaultPositions = {\n\tse: ( targetRect ) => ( {\n\t\ttop: targetRect.bottom + BalloonPanelView.arrowVerticalOffset,\n\t\tleft: targetRect.left + targetRect.width / 2 - BalloonPanelView.arrowHorizontalOffset,\n\t\tname: 'se'\n\t} ),\n\n\tsw: ( targetRect, balloonRect ) => ( {\n\t\ttop: targetRect.bottom + BalloonPanelView.arrowVerticalOffset,\n\t\tleft: targetRect.left + targetRect.width / 2 - balloonRect.width + BalloonPanelView.arrowHorizontalOffset,\n\t\tname: 'sw'\n\t} ),\n\n\tne: ( targetRect, balloonRect ) => ( {\n\t\ttop: targetRect.top - balloonRect.height - BalloonPanelView.arrowVerticalOffset,\n\t\tleft: targetRect.left + targetRect.width / 2 - BalloonPanelView.arrowHorizontalOffset,\n\t\tname: 'ne'\n\t} ),\n\n\tnw: ( targetRect, balloonRect ) => ( {\n\t\ttop: targetRect.top - balloonRect.height - BalloonPanelView.arrowVerticalOffset,\n\t\tleft: targetRect.left + targetRect.width / 2 - balloonRect.width + BalloonPanelView.arrowHorizontalOffset,\n\t\tname: 'nw'\n\t} )\n};\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-ui/src/balloonpanel/balloonpanelview.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/bindings/clickoutsidehandler\n */\n\n/* global document */\n\n/**\n * Handles a DOM `click` event outside of specified element and fires an action.\n *\n * Note that it is not handled by a `click` event, this is to avoid situation when click on some trigger\n * opens and closes element at the same time.\n *\n * @param {Object} options Configuration options.\n * @param {module:utils/dom/emittermixin~Emitter} options.emitter The emitter to which this behavior should be added.\n * @param {Function} options.activator Function returning a `Boolean`, to determine whether handler is active.\n * @param {HTMLElement} options.contextElement `HTMLElement` that clicking inside of which will not fire the callback.\n * @param {Function} options.callback Function fired after clicking outside of a specified element.\n */\nexport default function clickOutsideHandler( { emitter, activator, callback, contextElement } ) {\n\temitter.listenTo( document, 'mouseup', ( evt, { target } ) => {\n\t\tif ( activator() && !contextElement.contains( target ) ) {\n\t\t\tcallback();\n\t\t}\n\t} );\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-ui/src/bindings/clickoutsidehandler.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/bindings/submithandler\n */\n\n/**\n * Handles native DOM `submit` event by preventing it and firing\n * the {@link module:ui/view~View view's} `submit` event, which can be then handled by the\n * parent controller.\n *\n * @param {Object} [options] Configuration options.\n * @param {module:ui/view~View} options.view The view to which this behavior should be added.\n */\nexport default function submitHandler( { view } ) {\n\tview.listenTo( view.element, 'submit', ( evt, domEvt ) => {\n\t\tdomEvt.preventDefault();\n\t\tview.fire( 'submit' );\n\t}, { useCapture: true } );\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-ui/src/bindings/submithandler.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/inputtext/inputtextview\n */\n\nimport View from '../view';\nimport Template from '../template';\n\n/**\n * The text input view class.\n *\n * @extends module:ui/view~View\n */\nexport default class InputTextView extends View {\n\t/**\n\t * @inheritDoc\n\t */\n\tconstructor( locale ) {\n\t\tsuper( locale );\n\n\t\t/**\n\t\t * The value of the input.\n\t\t *\n\t\t * @observable\n\t\t * @member {String} #value\n\t\t */\n\t\tthis.set( 'value' );\n\n\t\t/**\n\t\t * The `id` attribute of the input (i.e. to pair with a `<label>` element).\n\t\t *\n\t\t * @observable\n\t\t * @member {String} #id\n\t\t */\n\t\tthis.set( 'id' );\n\n\t\tconst bind = this.bindTemplate;\n\n\t\tthis.template = new Template( {\n\t\t\ttag: 'input',\n\t\t\tattributes: {\n\t\t\t\ttype: 'text',\n\t\t\t\tclass: [\n\t\t\t\t\t'ck-input',\n\t\t\t\t\t'ck-input-text'\n\t\t\t\t],\n\t\t\t\tid: bind.to( 'id' )\n\t\t\t}\n\t\t} );\n\n\t\t// Note: `value` cannot be an HTML attribute, because it doesn't change HTMLInputElement value once changed.\n\t\tthis.on( 'change:value', ( evt, propertyName, value ) => this.element.value = value || '' );\n\t}\n\n\t/**\n\t * Moves the focus to the input and selects the value.\n\t */\n\tselect() {\n\t\tthis.element.select();\n\t}\n\n\t/**\n\t * Focuses the input.\n\t */\n\tfocus() {\n\t\tthis.element.focus();\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-ui/src/inputtext/inputtextview.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/labeledinput/labeledinputview\n */\n\nimport View from '../view';\nimport Template from '../template';\nimport uid from '@ckeditor/ckeditor5-utils/src/uid';\n\nimport LabelView from '../label/labelview';\n\n/**\n * The labeled input view class.\n *\n * @extends module:ui/view~View\n */\nexport default class LabeledInputView extends View {\n\t/**\n\t * Creates an instance of the labeled input view class.\n\t *\n\t * @param {module:utils/locale~Locale} locale The locale instance.\n\t * @param {Function} InputView Constructor of the input view.\n\t */\n\tconstructor( locale, InputView ) {\n\t\tsuper( locale );\n\n\t\tconst id = `ck-input-${ uid() }`;\n\n\t\t/**\n\t\t * The text of the label.\n\t\t *\n\t\t * @observable\n\t\t * @member {String} #label\n\t\t */\n\t\tthis.set( 'label' );\n\n\t\t/**\n\t\t * The value of the input.\n\t\t *\n\t\t * @observable\n\t\t * @member {String} #value\n\t\t */\n\t\tthis.set( 'value' );\n\n\t\t/**\n\t\t * The label view.\n\t\t *\n\t\t * @member {module:ui/label/labelview~LabelView} #labelView\n\t\t */\n\t\tthis.labelView = this._createLabelView( id );\n\n\t\t/**\n\t\t * The input view.\n\t\t *\n\t\t * @member {module:ui/view~View} #inputView\n\t\t */\n\t\tthis.inputView = this._createInputView( InputView, id );\n\n\t\tthis.template = new Template( {\n\t\t\ttag: 'div',\n\n\t\t\tchildren: [\n\t\t\t\tthis.labelView,\n\t\t\t\tthis.inputView\n\t\t\t]\n\t\t} );\n\t}\n\n\t/**\n\t * Creates label view class instance and bind with view.\n\t *\n\t * @private\n\t * @param {String} id Unique id to set as labelView#for attribute.\n\t * @returns {module:ui/label/labelview~LabelView}\n\t */\n\t_createLabelView( id ) {\n\t\tconst labelView = new LabelView( this.locale );\n\n\t\tlabelView.for = id;\n\t\tlabelView.bind( 'text' ).to( this, 'label' );\n\n\t\treturn labelView;\n\t}\n\n\t/**\n\t * Creates input view class instance and bind with view.\n\t *\n\t * @private\n\t * @param {Function} InputView Input view constructor.\n\t * @param {String} id Unique id to set as inputView#id attribute.\n\t * @returns {module:ui/inputtext/inputtextview~InputTextView}\n\t */\n\t_createInputView( InputView, id ) {\n\t\tconst inputView = new InputView( this.locale );\n\n\t\tinputView.id = id;\n\t\tinputView.bind( 'value' ).to( this );\n\n\t\treturn inputView;\n\t}\n\n\t/**\n\t * Moves the focus to the input and selects the value.\n\t */\n\tselect() {\n\t\tthis.inputView.select();\n\t}\n\n\t/**\n\t * Focuses the input.\n\t */\n\tfocus() {\n\t\tthis.inputView.focus();\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-ui/src/labeledinput/labeledinputview.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/toolbar/toolbarview\n */\n\nimport View from '../view';\nimport Template from '../template';\nimport FocusTracker from '@ckeditor/ckeditor5-utils/src/focustracker';\nimport FocusCycler from '../focuscycler';\nimport KeystrokeHandler from '@ckeditor/ckeditor5-utils/src/keystrokehandler';\nimport ToolbarSeparatorView from './toolbarseparatorview';\n\n/**\n * The toolbar view class.\n *\n * @extends module:ui/view~View\n */\nexport default class ToolbarView extends View {\n\t/**\n\t * @inheritDoc\n\t */\n\tconstructor( locale ) {\n\t\tsuper( locale );\n\n\t\t/**\n\t\t * Collection of the toolbar items (like buttons).\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:ui/viewcollection~ViewCollection}\n\t\t */\n\t\tthis.items = this.createCollection();\n\n\t\t/**\n\t\t * Tracks information about DOM focus in the list.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:utils/focustracker~FocusTracker}\n\t\t */\n\t\tthis.focusTracker = new FocusTracker();\n\n\t\t/**\n\t\t * Instance of the {@link module:core/keystrokehandler~KeystrokeHandler}.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:core/keystrokehandler~KeystrokeHandler}\n\t\t */\n\t\tthis.keystrokes = new KeystrokeHandler();\n\n\t\t/**\n\t\t * Helps cycling over focusable {@link #items} in the toolbar.\n\t\t *\n\t\t * @readonly\n\t\t * @protected\n\t\t * @member {module:ui/focuscycler~FocusCycler}\n\t\t */\n\t\tthis._focusCycler = new FocusCycler( {\n\t\t\tfocusables: this.items,\n\t\t\tfocusTracker: this.focusTracker,\n\t\t\tkeystrokeHandler: this.keystrokes,\n\t\t\tactions: {\n\t\t\t\t// Navigate toolbar items backwards using the arrow[left,up] keys.\n\t\t\t\tfocusPrevious: [ 'arrowleft', 'arrowup' ],\n\n\t\t\t\t// Navigate toolbar items forwards using the arrow[right,down] keys.\n\t\t\t\tfocusNext: [ 'arrowright', 'arrowdown' ]\n\t\t\t}\n\t\t} );\n\n\t\tthis.template = new Template( {\n\t\t\ttag: 'div',\n\t\t\tattributes: {\n\t\t\t\tclass: [\n\t\t\t\t\t'ck-toolbar'\n\t\t\t\t]\n\t\t\t},\n\n\t\t\tchildren: this.items\n\t\t} );\n\n\t\tthis.items.on( 'add', ( evt, item ) => {\n\t\t\tthis.focusTracker.add( item.element );\n\t\t} );\n\n\t\tthis.items.on( 'remove', ( evt, item ) => {\n\t\t\tthis.focusTracker.remove( item.element );\n\t\t} );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\t// Start listening for the keystrokes coming from #element.\n\t\tthis.keystrokes.listenTo( this.element );\n\n\t\treturn super.init();\n\t}\n\n\t/**\n\t * Focuses the first focusable in {@link #items}.\n\t */\n\tfocus() {\n\t\tthis._focusCycler.focusFirst();\n\t}\n\n\t/**\n\t * A utility which expands a plain toolbar configuration into\n\t * {@link module:ui/toolbar/toolbarview~ToolbarView#items} using a given component factory.\n\t *\n\t * @param {Array} config The toolbar config.\n\t * @param {module:ui/componentfactory~ComponentFactory} factory A factory producing toolbar items.\n\t * @returns {Promise} A promise resolved when created toolbar items are initialized.\n\t */\n\tfillFromConfig( config, factory ) {\n\t\tif ( !config ) {\n\t\t\treturn Promise.resolve();\n\t\t}\n\n\t\treturn Promise.all( config.map( name => {\n\t\t\tconst component = name == '|' ? new ToolbarSeparatorView() : factory.create( name );\n\n\t\t\treturn this.items.add( component );\n\t\t} ) );\n\t}\n}\n\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-ui/src/toolbar/toolbarview.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module undo/basecommand\n */\n\nimport Command from '@ckeditor/ckeditor5-core/src/command/command';\n\n/**\n * Base class for undo feature commands: {@link module:undo/undocommand~UndoCommand} and {@link module:undo/redocommand~RedoCommand}.\n *\n * @protected\n * @extends module:core/command/command~Command\n */\nexport default class BaseCommand extends Command {\n\tconstructor( editor ) {\n\t\tsuper( editor );\n\n\t\t/**\n\t\t * Stack of items stored by the command. These are pairs of:\n\t\t *\n\t\t * * {@link module:engine/model/batch~Batch batch} saved by the command,\n\t\t * * {@link module:engine/model/selection~Selection selection} state at the moment of saving the batch.\n\t\t *\n\t\t * @protected\n\t\t * @member {Array} #_stack\n\t\t */\n\t\tthis._stack = [];\n\n\t\t/**\n\t\t * Stores all batches that were created by this command.\n\t\t *\n\t\t * @protected\n\t\t * @member {WeakSet.<module:engine/model/batch~Batch>} #_createdBatches\n\t\t */\n\t\tthis._createdBatches = new WeakSet();\n\n\t\t// Refresh state, so command is inactive just after initialization.\n\t\tthis.refreshState();\n\t}\n\n\t/**\n\t * Stores a batch in the command, together with the selection state of the {@link module:engine/model/document~Document document}\n\t * created by the editor which this command is registered to.\n\t *\n\t * @param {module:engine/model/batch~Batch} batch The batch to add.\n\t */\n\taddBatch( batch ) {\n\t\tconst selection = {\n\t\t\tranges: Array.from( this.editor.document.selection.getRanges() ),\n\t\t\tisBackward: this.editor.document.selection.isBackward\n\t\t};\n\n\t\tthis._stack.push( { batch, selection } );\n\t\tthis.refreshState();\n\t}\n\n\t/**\n\t * Removes all items from the stack.\n\t */\n\tclearStack() {\n\t\tthis._stack = [];\n\t\tthis.refreshState();\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\t_checkEnabled() {\n\t\treturn this._stack.length > 0;\n\t}\n\n\t/**\n\t * Restores the {@link module:engine/model/document~Document#selection document selection} state after a batch was undone.\n\t *\n\t * @protected\n\t * @param {Array.<module:engine/model/range~Range>} ranges Ranges to be restored.\n\t * @param {Boolean} isBackward A flag describing whether the restored range was selected forward or backward.\n\t */\n\t_restoreSelection( ranges, isBackward, deltas ) {\n\t\tconst document = this.editor.document;\n\n\t\t// This will keep the transformed selection ranges.\n\t\tconst selectionRanges = [];\n\n\t\t// Transform all ranges from the restored selection.\n\t\tfor ( let range of ranges ) {\n\t\t\tconst transformedRanges = transformSelectionRange( range, deltas );\n\n\t\t\t// For each `range` from `ranges`, we take only one transformed range.\n\t\t\t// This is because we want to prevent situation where single-range selection\n\t\t\t// got transformed to multi-range selection. We will take the first range that\n\t\t\t// is not in the graveyard.\n\t\t\tconst transformedRange = transformedRanges.find(\n\t\t\t\t( range ) => range.start.root != document.graveyard\n\t\t\t);\n\n\t\t\t// `transformedRange` might be `undefined` if transformed range ended up in graveyard.\n\t\t\tif ( transformedRange ) {\n\t\t\t\tselectionRanges.push( transformedRange );\n\t\t\t}\n\t\t}\n\n\t\t// `selectionRanges` may be empty if all ranges ended up in graveyard. If that is the case, do not restore selection.\n\t\tif ( selectionRanges.length ) {\n\t\t\tdocument.selection.setRanges( selectionRanges, isBackward );\n\t\t}\n\t}\n}\n\n// Transforms given range `range` by deltas from `document` history, starting from a delta with given `baseVersion`.\n// Returns an array containing one or more ranges, which are result of the transformation.\nfunction transformSelectionRange( range, deltas ) {\n\t// The range will be transformed by history deltas that happened after the selection got stored.\n\t// Note, that at this point, the document history is already updated by undo command execution. We will\n\t// not transform the range by deltas that got undone or their reversing counterparts.\n\tlet transformed = transformRangesByDeltas( [ range ], deltas );\n\n\t// After `range` got transformed, we have an array of ranges. Some of those\n\t// ranges may be \"touching\" -- they can be next to each other and could be merged.\n\t// First, we have to sort those ranges because they don't have to be in an order.\n\ttransformed.sort( ( a, b ) => a.start.isBefore( b.start ) ? -1 : 1 );\n\n\t// Then, we check if two consecutive ranges are touching.\n\tfor ( let i = 1 ; i < transformed.length; i++ ) {\n\t\tlet a = transformed[ i - 1 ];\n\t\tlet b = transformed[ i ];\n\n\t\tif ( a.end.isTouching( b.start ) ) {\n\t\t\ta.end = b.end;\n\t\t\ttransformed.splice( i, 1 );\n\t\t\ti--;\n\t\t}\n\t}\n\n\treturn transformed;\n}\n\n// Transforms given set of `ranges` by given set of `deltas`. Returns transformed `ranges`.\nexport function transformRangesByDeltas( ranges, deltas ) {\n\tfor ( let delta of deltas ) {\n\t\tfor ( let operation of delta.operations ) {\n\t\t\t// We look through all operations from all deltas.\n\n\t\t\tfor ( let i = 0; i < ranges.length; i++ ) {\n\t\t\t\t// We transform every range by every operation.\n\t\t\t\tlet result;\n\n\t\t\t\tswitch ( operation.type ) {\n\t\t\t\t\tcase 'insert':\n\t\t\t\t\t\tresult = ranges[ i ]._getTransformedByInsertion(\n\t\t\t\t\t\t\toperation.position,\n\t\t\t\t\t\t\toperation.nodes.maxOffset,\n\t\t\t\t\t\t\ttrue\n\t\t\t\t\t\t);\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'move':\n\t\t\t\t\tcase 'remove':\n\t\t\t\t\tcase 'reinsert':\n\t\t\t\t\t\tresult = ranges[ i ]._getTransformedByMove(\n\t\t\t\t\t\t\toperation.sourcePosition,\n\t\t\t\t\t\t\toperation.targetPosition,\n\t\t\t\t\t\t\toperation.howMany,\n\t\t\t\t\t\t\ttrue\n\t\t\t\t\t\t);\n\t\t\t\t\t\tbreak;\n\t\t\t\t}\n\n\t\t\t\t// If we have a transformation result, we substitute transformed range with it in `transformed` array.\n\t\t\t\t// Keep in mind that the result is an array and may contain multiple ranges.\n\t\t\t\tif ( result ) {\n\t\t\t\t\tranges.splice( i, 1, ...result );\n\n\t\t\t\t\t// Fix iterator.\n\t\t\t\t\ti = i + result.length - 1;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\treturn ranges;\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-undo/src/basecommand.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/count\n */\n\n/**\n * Returns the number of items return by the iterator.\n *\n *\t\tcount( [ 1, 2, 3, 4, 5 ] ); // 5;\n *\n * @param {Iterable.<*>} iterator Any iterator.\n * @returns {Number} Number of items returned by that iterator.\n */\nexport default function count( iterator ) {\n\tlet count = 0;\n\n\tfor ( let _ of iterator ) { // jshint ignore:line\n\t\tcount++;\n\t}\n\n\treturn count;\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/count.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/diff\n */\n\n// The following code is based on the \"O(NP) Sequence Comparison Algorithm\"\n// by Sun Wu, Udi Manber, Gene Myers, Webb Miller.\n\n/**\n * Calculates the difference between two arrays or strings producing an array containing a list of changes\n * necessary to transform input into output.\n *\n *\t\tdiff( 'aba', 'acca' ); // [ 'equal', 'insert', 'insert', 'delete', 'equal' ]\n *\n * @param {Array|String} a Input array or string.\n * @param {Array|String} b Output array or string.\n * @param {Function} [cmp] Optional function used to compare array values, by default === is used.\n * @returns {Array} Array of changes.\n */\nexport default function diff( a, b, cmp ) {\n\t// Set the comparator function.\n\tcmp = cmp || function( a, b ) {\n\t\t\treturn a === b;\n\t\t};\n\n\t// Temporary action type statics.\n\tlet _insert, _delete;\n\n\t// Swapped the arrays to use the shorter one as the first one.\n\tif ( b.length < a.length ) {\n\t\tlet tmp = a;\n\n\t\ta = b;\n\t\tb = tmp;\n\n\t\t// We swap the action types as well.\n\t\t_insert = 'delete';\n\t\t_delete = 'insert';\n\t} else {\n\t\t_insert = 'insert';\n\t\t_delete = 'delete';\n\t}\n\n\tconst m = a.length;\n\tconst n = b.length;\n\tconst delta = n - m;\n\n\t// Edit scripts, for each diagonal.\n\tconst es = {};\n\t// Furthest points, the furthest y we can get on each diagonal.\n\tconst fp = {};\n\n\tfunction snake( k ) {\n\t\t// We use -1 as an alternative below to handle initial values ( instead of filling the fp with -1 first ).\n\t\t// Furthest points (y) on the diagonal below k.\n\t\tconst y1 = ( fp[ k - 1 ] !== undefined ? fp[ k - 1 ] : -1 ) + 1;\n\t\t// Furthest points (y) on the diagonal above k.\n\t\tconst y2 = fp[ k + 1 ] !== undefined ? fp[ k + 1 ] : -1;\n\t\t// The way we should go to get further.\n\t\tconst dir = y1 > y2 ? -1 : 1;\n\n\t\t// Clone previous changes array (if any).\n\t\tif ( es[ k + dir ] ) {\n\t\t\tes[ k ] = es[ k + dir ].slice( 0 );\n\t\t}\n\n\t\t// Create changes array.\n\t\tif ( !es[ k ] ) {\n\t\t\tes[ k ] = [];\n\t\t}\n\n\t\t// Push the action.\n\t\tes[ k ].push( y1 > y2 ? _insert : _delete );\n\n\t\t// Set the beginning coordinates.\n\t\tlet y = Math.max( y1, y2 );\n\t\tlet x = y - k;\n\n\t\t// Traverse the diagonal as long as the values match.\n\t\twhile ( x < m && y < n && cmp( a[ x ], b[ y ] ) ) {\n\t\t\tx++;\n\t\t\ty++;\n\t\t\t// Push no change action.\n\t\t\tes[ k ].push( 'equal' );\n\t\t}\n\n\t\treturn y;\n\t}\n\n\tlet p = 0;\n\tlet k;\n\n\t// Traverse the graph until we reach the end of the longer string.\n\tdo {\n\t\t// Updates furthest points and edit scripts for diagonals below delta.\n\t\tfor ( k = -p; k < delta; k++ ) {\n\t\t\tfp[ k ] = snake( k );\n\t\t}\n\n\t\t// Updates furthest points and edit scripts for diagonals above delta.\n\t\tfor ( k = delta + p; k > delta; k-- ) {\n\t\t\tfp[ k ] = snake( k );\n\t\t}\n\n\t\t// Updates furthest point and edit script for the delta diagonal.\n\t\t// note that the delta diagonal is the one which goes through the sink (m, n).\n\t\tfp[ delta ] = snake( delta );\n\n\t\tp++;\n\t} while ( fp[ delta ] !== n );\n\n\t// Return the final list of edit changes.\n\t// We remove the first item that represents the action for the injected nulls.\n\treturn es[ delta ].slice( 1 );\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/diff.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/* globals Node */\n\n/**\n * @module utils/dom/getancestors\n */\n\n/**\n * Returns all ancestors of given DOM node, starting from the top-most (root). Includes the given node itself. If the\n * node is a part of `DocumentFragment` that `DocumentFragment` will be returned. In contrary, if the node is\n * appended to a `Document`, that `Document` will not be returned (algorithms operating on DOM tree care for `Document#documentElement`\n * at most, which will be returned).\n *\n * @param {Node} node DOM node.\n * @returns {Array.<Node|DocumentFragment>} Array of given `node` parents.\n */\nexport default function getAncestors( node ) {\n\tconst nodes = [];\n\n\t// We are interested in `Node`s `DocumentFragment`s only.\n\twhile ( node && node.nodeType != Node.DOCUMENT_NODE ) {\n\t\tnodes.unshift( node );\n\t\tnode = node.parentNode;\n\t}\n\n\treturn nodes;\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/dom/getancestors.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/dom/tounit\n */\n\n/**\n * Returns a helper function, which adds a desired trailing\n * `unit` to the passed value.\n *\n * @param {String} unit An unit like \"px\" or \"em\".\n * @returns {module:utils/dom/tounit~helper}\n */\nexport default function toUnit( unit ) {\n\t/**\n\t * A function, which adds a pre–defined trailing `unit`\n\t * to the passed `value`.\n\t *\n\t * @function helper\n \t * @param {*} value A value to be given the unit.\n \t * @returns {String} A value with the trailing unit.\n\t */\n\treturn ( value ) => value + unit;\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/dom/tounit.js","import getNative from './_getNative';\nimport root from './_root';\n\n/* Built-in method references that are verified to be native. */\nvar Map = getNative(root, 'Map');\n\nexport default Map;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_Map.js","import getNative from './_getNative';\nimport root from './_root';\n\n/* Built-in method references that are verified to be native. */\nvar Set = getNative(root, 'Set');\n\nexport default Set;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_Set.js","import root from './_root';\n\n/** Built-in value references. */\nvar Uint8Array = root.Uint8Array;\n\nexport default Uint8Array;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_Uint8Array.js","/**\n * A faster alternative to `Function#apply`, this function invokes `func`\n * with the `this` binding of `thisArg` and the arguments of `args`.\n *\n * @private\n * @param {Function} func The function to invoke.\n * @param {*} thisArg The `this` binding of `func`.\n * @param {Array} args The arguments to invoke `func` with.\n * @returns {*} Returns the result of `func`.\n */\nfunction apply(func, thisArg, args) {\n  var length = args.length;\n  switch (length) {\n    case 0: return func.call(thisArg);\n    case 1: return func.call(thisArg, args[0]);\n    case 2: return func.call(thisArg, args[0], args[1]);\n    case 3: return func.call(thisArg, args[0], args[1], args[2]);\n  }\n  return func.apply(thisArg, args);\n}\n\nexport default apply;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_apply.js","/**\n * A specialized version of `_.reduce` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @param {*} [accumulator] The initial value.\n * @param {boolean} [initAccum] Specify using the first element of `array` as\n *  the initial value.\n * @returns {*} Returns the accumulated value.\n */\nfunction arrayReduce(array, iteratee, accumulator, initAccum) {\n  var index = -1,\n      length = array.length;\n\n  if (initAccum && length) {\n    accumulator = array[++index];\n  }\n  while (++index < length) {\n    accumulator = iteratee(accumulator, array[index], index, array);\n  }\n  return accumulator;\n}\n\nexport default arrayReduce;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_arrayReduce.js","import Stack from './_Stack';\nimport arrayEach from './_arrayEach';\nimport assignValue from './_assignValue';\nimport baseAssign from './_baseAssign';\nimport cloneBuffer from './_cloneBuffer';\nimport copyArray from './_copyArray';\nimport copySymbols from './_copySymbols';\nimport getAllKeys from './_getAllKeys';\nimport getTag from './_getTag';\nimport initCloneArray from './_initCloneArray';\nimport initCloneByTag from './_initCloneByTag';\nimport initCloneObject from './_initCloneObject';\nimport isArray from './isArray';\nimport isBuffer from './isBuffer';\nimport isHostObject from './_isHostObject';\nimport isObject from './isObject';\nimport keys from './keys';\n\n/** `Object#toString` result references. */\nvar argsTag = '[object Arguments]',\n    arrayTag = '[object Array]',\n    boolTag = '[object Boolean]',\n    dateTag = '[object Date]',\n    errorTag = '[object Error]',\n    funcTag = '[object Function]',\n    genTag = '[object GeneratorFunction]',\n    mapTag = '[object Map]',\n    numberTag = '[object Number]',\n    objectTag = '[object Object]',\n    regexpTag = '[object RegExp]',\n    setTag = '[object Set]',\n    stringTag = '[object String]',\n    symbolTag = '[object Symbol]',\n    weakMapTag = '[object WeakMap]';\n\nvar arrayBufferTag = '[object ArrayBuffer]',\n    dataViewTag = '[object DataView]',\n    float32Tag = '[object Float32Array]',\n    float64Tag = '[object Float64Array]',\n    int8Tag = '[object Int8Array]',\n    int16Tag = '[object Int16Array]',\n    int32Tag = '[object Int32Array]',\n    uint8Tag = '[object Uint8Array]',\n    uint8ClampedTag = '[object Uint8ClampedArray]',\n    uint16Tag = '[object Uint16Array]',\n    uint32Tag = '[object Uint32Array]';\n\n/** Used to identify `toStringTag` values supported by `_.clone`. */\nvar cloneableTags = {};\ncloneableTags[argsTag] = cloneableTags[arrayTag] =\ncloneableTags[arrayBufferTag] = cloneableTags[dataViewTag] =\ncloneableTags[boolTag] = cloneableTags[dateTag] =\ncloneableTags[float32Tag] = cloneableTags[float64Tag] =\ncloneableTags[int8Tag] = cloneableTags[int16Tag] =\ncloneableTags[int32Tag] = cloneableTags[mapTag] =\ncloneableTags[numberTag] = cloneableTags[objectTag] =\ncloneableTags[regexpTag] = cloneableTags[setTag] =\ncloneableTags[stringTag] = cloneableTags[symbolTag] =\ncloneableTags[uint8Tag] = cloneableTags[uint8ClampedTag] =\ncloneableTags[uint16Tag] = cloneableTags[uint32Tag] = true;\ncloneableTags[errorTag] = cloneableTags[funcTag] =\ncloneableTags[weakMapTag] = false;\n\n/**\n * The base implementation of `_.clone` and `_.cloneDeep` which tracks\n * traversed objects.\n *\n * @private\n * @param {*} value The value to clone.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @param {boolean} [isFull] Specify a clone including symbols.\n * @param {Function} [customizer] The function to customize cloning.\n * @param {string} [key] The key of `value`.\n * @param {Object} [object] The parent object of `value`.\n * @param {Object} [stack] Tracks traversed objects and their clone counterparts.\n * @returns {*} Returns the cloned value.\n */\nfunction baseClone(value, isDeep, isFull, customizer, key, object, stack) {\n  var result;\n  if (customizer) {\n    result = object ? customizer(value, key, object, stack) : customizer(value);\n  }\n  if (result !== undefined) {\n    return result;\n  }\n  if (!isObject(value)) {\n    return value;\n  }\n  var isArr = isArray(value);\n  if (isArr) {\n    result = initCloneArray(value);\n    if (!isDeep) {\n      return copyArray(value, result);\n    }\n  } else {\n    var tag = getTag(value),\n        isFunc = tag == funcTag || tag == genTag;\n\n    if (isBuffer(value)) {\n      return cloneBuffer(value, isDeep);\n    }\n    if (tag == objectTag || tag == argsTag || (isFunc && !object)) {\n      if (isHostObject(value)) {\n        return object ? value : {};\n      }\n      result = initCloneObject(isFunc ? {} : value);\n      if (!isDeep) {\n        return copySymbols(value, baseAssign(result, value));\n      }\n    } else {\n      if (!cloneableTags[tag]) {\n        return object ? value : {};\n      }\n      result = initCloneByTag(value, tag, baseClone, isDeep);\n    }\n  }\n  // Check for circular references and return its corresponding clone.\n  stack || (stack = new Stack);\n  var stacked = stack.get(value);\n  if (stacked) {\n    return stacked;\n  }\n  stack.set(value, result);\n\n  if (!isArr) {\n    var props = isFull ? getAllKeys(value) : keys(value);\n  }\n  // Recursively populate clone (susceptible to call stack limits).\n  arrayEach(props || value, function(subValue, key) {\n    if (props) {\n      key = subValue;\n      subValue = value[key];\n    }\n    assignValue(result, key, baseClone(subValue, isDeep, isFull, customizer, key, value, stack));\n  });\n  return result;\n}\n\nexport default baseClone;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_baseClone.js","/**\n * The base implementation of `_.findIndex` and `_.findLastIndex` without\n * support for iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to search.\n * @param {Function} predicate The function invoked per iteration.\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\nfunction baseFindIndex(array, predicate, fromRight) {\n  var length = array.length,\n      index = fromRight ? length : -1;\n\n  while ((fromRight ? index-- : ++index < length)) {\n    if (predicate(array[index], index, array)) {\n      return index;\n    }\n  }\n  return -1;\n}\n\nexport default baseFindIndex;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_baseFindIndex.js","import getPrototype from './_getPrototype';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/**\n * The base implementation of `_.has` without support for deep paths.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array|string} key The key to check.\n * @returns {boolean} Returns `true` if `key` exists, else `false`.\n */\nfunction baseHas(object, key) {\n  // Avoid a bug in IE 10-11 where objects with a [[Prototype]] of `null`,\n  // that are composed entirely of index properties, return `false` for\n  // `hasOwnProperty` checks of them.\n  return hasOwnProperty.call(object, key) ||\n    (typeof object == 'object' && key in object && getPrototype(object) === null);\n}\n\nexport default baseHas;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_baseHas.js","import castPath from './_castPath';\nimport isIndex from './_isIndex';\nimport isKey from './_isKey';\nimport last from './last';\nimport parent from './_parent';\nimport toKey from './_toKey';\n\n/** Used for built-in method references. */\nvar arrayProto = Array.prototype;\n\n/** Built-in value references. */\nvar splice = arrayProto.splice;\n\n/**\n * The base implementation of `_.pullAt` without support for individual\n * indexes or capturing the removed elements.\n *\n * @private\n * @param {Array} array The array to modify.\n * @param {number[]} indexes The indexes of elements to remove.\n * @returns {Array} Returns `array`.\n */\nfunction basePullAt(array, indexes) {\n  var length = array ? indexes.length : 0,\n      lastIndex = length - 1;\n\n  while (length--) {\n    var index = indexes[length];\n    if (length == lastIndex || index !== previous) {\n      var previous = index;\n      if (isIndex(index)) {\n        splice.call(array, index, 1);\n      }\n      else if (!isKey(index, array)) {\n        var path = castPath(index),\n            object = parent(array, path);\n\n        if (object != null) {\n          delete object[toKey(last(path))];\n        }\n      }\n      else {\n        delete array[toKey(index)];\n      }\n    }\n  }\n  return array;\n}\n\nexport default basePullAt;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_basePullAt.js","import eq from './eq';\n\n/**\n * The base implementation of `_.sortedUniq` and `_.sortedUniqBy` without\n * support for iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @returns {Array} Returns the new duplicate free array.\n */\nfunction baseSortedUniq(array, iteratee) {\n  var index = -1,\n      length = array.length,\n      resIndex = 0,\n      result = [];\n\n  while (++index < length) {\n    var value = array[index],\n        computed = iteratee ? iteratee(value) : value;\n\n    if (!index || !eq(computed, seen)) {\n      var seen = computed;\n      result[resIndex++] = value === 0 ? 0 : value;\n    }\n  }\n  return result;\n}\n\nexport default baseSortedUniq;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_baseSortedUniq.js","/**\n * The base implementation of `_.times` without support for iteratee shorthands\n * or max array length checks.\n *\n * @private\n * @param {number} n The number of times to invoke `iteratee`.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array} Returns the array of results.\n */\nfunction baseTimes(n, iteratee) {\n  var index = -1,\n      result = Array(n);\n\n  while (++index < n) {\n    result[index] = iteratee(index);\n  }\n  return result;\n}\n\nexport default baseTimes;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_baseTimes.js","/**\n * This base implementation of `_.zipObject` which assigns values using `assignFunc`.\n *\n * @private\n * @param {Array} props The property identifiers.\n * @param {Array} values The property values.\n * @param {Function} assignFunc The function to assign values.\n * @returns {Object} Returns the new object.\n */\nfunction baseZipObject(props, values, assignFunc) {\n  var index = -1,\n      length = props.length,\n      valsLength = values.length,\n      result = {};\n\n  while (++index < length) {\n    var value = index < valsLength ? values[index] : undefined;\n    assignFunc(result, props[index], value);\n  }\n  return result;\n}\n\nexport default baseZipObject;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_baseZipObject.js","/**\n * Copies the values of `source` to `array`.\n *\n * @private\n * @param {Array} source The array to copy values from.\n * @param {Array} [array=[]] The array to copy values to.\n * @returns {Array} Returns `array`.\n */\nfunction copyArray(source, array) {\n  var index = -1,\n      length = source.length;\n\n  array || (array = Array(length));\n  while (++index < length) {\n    array[index] = source[index];\n  }\n  return array;\n}\n\nexport default copyArray;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_copyArray.js","import SetCache from './_SetCache';\nimport arraySome from './_arraySome';\n\n/** Used to compose bitmasks for comparison styles. */\nvar UNORDERED_COMPARE_FLAG = 1,\n    PARTIAL_COMPARE_FLAG = 2;\n\n/**\n * A specialized version of `baseIsEqualDeep` for arrays with support for\n * partial deep comparisons.\n *\n * @private\n * @param {Array} array The array to compare.\n * @param {Array} other The other array to compare.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Function} customizer The function to customize comparisons.\n * @param {number} bitmask The bitmask of comparison flags. See `baseIsEqual`\n *  for more details.\n * @param {Object} stack Tracks traversed `array` and `other` objects.\n * @returns {boolean} Returns `true` if the arrays are equivalent, else `false`.\n */\nfunction equalArrays(array, other, equalFunc, customizer, bitmask, stack) {\n  var isPartial = bitmask & PARTIAL_COMPARE_FLAG,\n      arrLength = array.length,\n      othLength = other.length;\n\n  if (arrLength != othLength && !(isPartial && othLength > arrLength)) {\n    return false;\n  }\n  // Assume cyclic values are equal.\n  var stacked = stack.get(array);\n  if (stacked) {\n    return stacked == other;\n  }\n  var index = -1,\n      result = true,\n      seen = (bitmask & UNORDERED_COMPARE_FLAG) ? new SetCache : undefined;\n\n  stack.set(array, other);\n\n  // Ignore non-index properties.\n  while (++index < arrLength) {\n    var arrValue = array[index],\n        othValue = other[index];\n\n    if (customizer) {\n      var compared = isPartial\n        ? customizer(othValue, arrValue, index, other, array, stack)\n        : customizer(arrValue, othValue, index, array, other, stack);\n    }\n    if (compared !== undefined) {\n      if (compared) {\n        continue;\n      }\n      result = false;\n      break;\n    }\n    // Recursively compare arrays (susceptible to call stack limits).\n    if (seen) {\n      if (!arraySome(other, function(othValue, othIndex) {\n            if (!seen.has(othIndex) &&\n                (arrValue === othValue || equalFunc(arrValue, othValue, customizer, bitmask, stack))) {\n              return seen.add(othIndex);\n            }\n          })) {\n        result = false;\n        break;\n      }\n    } else if (!(\n          arrValue === othValue ||\n            equalFunc(arrValue, othValue, customizer, bitmask, stack)\n        )) {\n      result = false;\n      break;\n    }\n  }\n  stack['delete'](array);\n  return result;\n}\n\nexport default equalArrays;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_equalArrays.js","/** Built-in value references. */\nvar getOwnPropertySymbols = Object.getOwnPropertySymbols;\n\n/**\n * Creates an array of the own enumerable symbol properties of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of symbols.\n */\nfunction getSymbols(object) {\n  // Coerce `object` to an object to avoid non-object errors in V8.\n  // See https://bugs.chromium.org/p/v8/issues/detail?id=3443 for more details.\n  return getOwnPropertySymbols(Object(object));\n}\n\n// Fallback for IE < 11.\nif (!getOwnPropertySymbols) {\n  getSymbols = function() {\n    return [];\n  };\n}\n\nexport default getSymbols;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_getSymbols.js","import baseTimes from './_baseTimes';\nimport isArguments from './isArguments';\nimport isArray from './isArray';\nimport isLength from './isLength';\nimport isString from './isString';\n\n/**\n * Creates an array of index keys for `object` values of arrays,\n * `arguments` objects, and strings, otherwise `null` is returned.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array|null} Returns index keys, else `null`.\n */\nfunction indexKeys(object) {\n  var length = object ? object.length : undefined;\n  if (isLength(length) &&\n      (isArray(object) || isString(object) || isArguments(object))) {\n    return baseTimes(length, String);\n  }\n  return null;\n}\n\nexport default indexKeys;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_indexKeys.js","/**\n * Gets the index at which the first occurrence of `NaN` is found in `array`.\n *\n * @private\n * @param {Array} array The array to search.\n * @param {number} fromIndex The index to search from.\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {number} Returns the index of the matched `NaN`, else `-1`.\n */\nfunction indexOfNaN(array, fromIndex, fromRight) {\n  var length = array.length,\n      index = fromIndex + (fromRight ? 0 : -1);\n\n  while ((fromRight ? index-- : ++index < length)) {\n    var other = array[index];\n    if (other !== other) {\n      return index;\n    }\n  }\n  return -1;\n}\n\nexport default indexOfNaN;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_indexOfNaN.js","import isObject from './isObject';\n\n/**\n * Checks if `value` is suitable for strict equality comparisons, i.e. `===`.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` if suitable for strict\n *  equality comparisons, else `false`.\n */\nfunction isStrictComparable(value) {\n  return value === value && !isObject(value);\n}\n\nexport default isStrictComparable;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_isStrictComparable.js","/**\n * A specialized version of `matchesProperty` for source values suitable\n * for strict equality comparisons, i.e. `===`.\n *\n * @private\n * @param {string} key The key of the property to get.\n * @param {*} srcValue The value to match.\n * @returns {Function} Returns the new spec function.\n */\nfunction matchesStrictComparable(key, srcValue) {\n  return function(object) {\n    if (object == null) {\n      return false;\n    }\n    return object[key] === srcValue &&\n      (srcValue !== undefined || (key in Object(object)));\n  };\n}\n\nexport default matchesStrictComparable;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_matchesStrictComparable.js","/** Used to resolve the decompiled source of functions. */\nvar funcToString = Function.prototype.toString;\n\n/**\n * Converts `func` to its source code.\n *\n * @private\n * @param {Function} func The function to process.\n * @returns {string} Returns the source code.\n */\nfunction toSource(func) {\n  if (func != null) {\n    try {\n      return funcToString.call(func);\n    } catch (e) {}\n    try {\n      return (func + '');\n    } catch (e) {}\n  }\n  return '';\n}\n\nexport default toSource;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_toSource.js","import baseSlice from './_baseSlice';\nimport isIterateeCall from './_isIterateeCall';\nimport toInteger from './toInteger';\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeCeil = Math.ceil,\n    nativeMax = Math.max;\n\n/**\n * Creates an array of elements split into groups the length of `size`.\n * If `array` can't be split evenly, the final chunk will be the remaining\n * elements.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to process.\n * @param {number} [size=1] The length of each chunk\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the new array of chunks.\n * @example\n *\n * _.chunk(['a', 'b', 'c', 'd'], 2);\n * // => [['a', 'b'], ['c', 'd']]\n *\n * _.chunk(['a', 'b', 'c', 'd'], 3);\n * // => [['a', 'b', 'c'], ['d']]\n */\nfunction chunk(array, size, guard) {\n  if ((guard ? isIterateeCall(array, size, guard) : size === undefined)) {\n    size = 1;\n  } else {\n    size = nativeMax(toInteger(size), 0);\n  }\n  var length = array ? array.length : 0;\n  if (!length || size < 1) {\n    return [];\n  }\n  var index = 0,\n      resIndex = 0,\n      result = Array(nativeCeil(length / size));\n\n  while (index < length) {\n    result[resIndex++] = baseSlice(array, index, (index += size));\n  }\n  return result;\n}\n\nexport default chunk;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/chunk.js","/**\n * Creates an array with all falsey values removed. The values `false`, `null`,\n * `0`, `\"\"`, `undefined`, and `NaN` are falsey.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to compact.\n * @returns {Array} Returns the new array of filtered values.\n * @example\n *\n * _.compact([0, 1, false, 2, '', 3]);\n * // => [1, 2, 3]\n */\nfunction compact(array) {\n  var index = -1,\n      length = array ? array.length : 0,\n      resIndex = 0,\n      result = [];\n\n  while (++index < length) {\n    var value = array[index];\n    if (value) {\n      result[resIndex++] = value;\n    }\n  }\n  return result;\n}\n\nexport default compact;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/compact.js","import arrayPush from './_arrayPush';\nimport baseFlatten from './_baseFlatten';\nimport copyArray from './_copyArray';\nimport isArray from './isArray';\n\n/**\n * Creates a new array concatenating `array` with any additional arrays\n * and/or values.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to concatenate.\n * @param {...*} [values] The values to concatenate.\n * @returns {Array} Returns the new concatenated array.\n * @example\n *\n * var array = [1];\n * var other = _.concat(array, 2, [3], [[4]]);\n *\n * console.log(other);\n * // => [1, 2, 3, [4]]\n *\n * console.log(array);\n * // => [1]\n */\nfunction concat() {\n  var length = arguments.length,\n      args = Array(length ? length - 1 : 0),\n      array = arguments[0],\n      index = length;\n\n  while (index--) {\n    args[index - 1] = arguments[index];\n  }\n  return length\n    ? arrayPush(isArray(array) ? copyArray(array) : [array], baseFlatten(args, 1))\n    : [];\n}\n\nexport default concat;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/concat.js","import baseDifference from './_baseDifference';\nimport baseFlatten from './_baseFlatten';\nimport isArrayLikeObject from './isArrayLikeObject';\nimport rest from './rest';\n\n/**\n * Creates an array of unique `array` values not included in the other given\n * arrays using [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)\n * for equality comparisons. The order of result values is determined by the\n * order they occur in the first array.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {...Array} [values] The values to exclude.\n * @returns {Array} Returns the new array of filtered values.\n * @see _.without, _.xor\n * @example\n *\n * _.difference([3, 2, 1], [4, 2]);\n * // => [3, 1]\n */\nvar difference = rest(function(array, values) {\n  return isArrayLikeObject(array)\n    ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true))\n    : [];\n});\n\nexport default difference;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/difference.js","import baseDifference from './_baseDifference';\nimport baseFlatten from './_baseFlatten';\nimport baseIteratee from './_baseIteratee';\nimport isArrayLikeObject from './isArrayLikeObject';\nimport last from './last';\nimport rest from './rest';\n\n/**\n * This method is like `_.difference` except that it accepts `iteratee` which\n * is invoked for each element of `array` and `values` to generate the criterion\n * by which they're compared. Result values are chosen from the first array.\n * The iteratee is invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {...Array} [values] The values to exclude.\n * @param {Array|Function|Object|string} [iteratee=_.identity]\n *  The iteratee invoked per element.\n * @returns {Array} Returns the new array of filtered values.\n * @example\n *\n * _.differenceBy([3.1, 2.2, 1.3], [4.4, 2.5], Math.floor);\n * // => [3.1, 1.3]\n *\n * // The `_.property` iteratee shorthand.\n * _.differenceBy([{ 'x': 2 }, { 'x': 1 }], [{ 'x': 1 }], 'x');\n * // => [{ 'x': 2 }]\n */\nvar differenceBy = rest(function(array, values) {\n  var iteratee = last(values);\n  if (isArrayLikeObject(iteratee)) {\n    iteratee = undefined;\n  }\n  return isArrayLikeObject(array)\n    ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), baseIteratee(iteratee))\n    : [];\n});\n\nexport default differenceBy;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/differenceBy.js","import baseDifference from './_baseDifference';\nimport baseFlatten from './_baseFlatten';\nimport isArrayLikeObject from './isArrayLikeObject';\nimport last from './last';\nimport rest from './rest';\n\n/**\n * This method is like `_.difference` except that it accepts `comparator`\n * which is invoked to compare elements of `array` to `values`. Result values\n * are chosen from the first array. The comparator is invoked with two arguments:\n * (arrVal, othVal).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {...Array} [values] The values to exclude.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of filtered values.\n * @example\n *\n * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n *\n * _.differenceWith(objects, [{ 'x': 1, 'y': 2 }], _.isEqual);\n * // => [{ 'x': 2, 'y': 1 }]\n */\nvar differenceWith = rest(function(array, values) {\n  var comparator = last(values);\n  if (isArrayLikeObject(comparator)) {\n    comparator = undefined;\n  }\n  return isArrayLikeObject(array)\n    ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), undefined, comparator)\n    : [];\n});\n\nexport default differenceWith;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/differenceWith.js","import baseIteratee from './_baseIteratee';\nimport baseWhile from './_baseWhile';\n\n/**\n * Creates a slice of `array` excluding elements dropped from the end.\n * Elements are dropped until `predicate` returns falsey. The predicate is\n * invoked with three arguments: (value, index, array).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {Array|Function|Object|string} [predicate=_.identity]\n *  The function invoked per iteration.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * var users = [\n *   { 'user': 'barney',  'active': true },\n *   { 'user': 'fred',    'active': false },\n *   { 'user': 'pebbles', 'active': false }\n * ];\n *\n * _.dropRightWhile(users, function(o) { return !o.active; });\n * // => objects for ['barney']\n *\n * // The `_.matches` iteratee shorthand.\n * _.dropRightWhile(users, { 'user': 'pebbles', 'active': false });\n * // => objects for ['barney', 'fred']\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.dropRightWhile(users, ['active', false]);\n * // => objects for ['barney']\n *\n * // The `_.property` iteratee shorthand.\n * _.dropRightWhile(users, 'active');\n * // => objects for ['barney', 'fred', 'pebbles']\n */\nfunction dropRightWhile(array, predicate) {\n  return (array && array.length)\n    ? baseWhile(array, baseIteratee(predicate, 3), true, true)\n    : [];\n}\n\nexport default dropRightWhile;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/dropRightWhile.js","import baseIteratee from './_baseIteratee';\nimport baseWhile from './_baseWhile';\n\n/**\n * Creates a slice of `array` excluding elements dropped from the beginning.\n * Elements are dropped until `predicate` returns falsey. The predicate is\n * invoked with three arguments: (value, index, array).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {Array|Function|Object|string} [predicate=_.identity]\n *  The function invoked per iteration.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * var users = [\n *   { 'user': 'barney',  'active': false },\n *   { 'user': 'fred',    'active': false },\n *   { 'user': 'pebbles', 'active': true }\n * ];\n *\n * _.dropWhile(users, function(o) { return !o.active; });\n * // => objects for ['pebbles']\n *\n * // The `_.matches` iteratee shorthand.\n * _.dropWhile(users, { 'user': 'barney', 'active': false });\n * // => objects for ['fred', 'pebbles']\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.dropWhile(users, ['active', false]);\n * // => objects for ['pebbles']\n *\n * // The `_.property` iteratee shorthand.\n * _.dropWhile(users, 'active');\n * // => objects for ['barney', 'fred', 'pebbles']\n */\nfunction dropWhile(array, predicate) {\n  return (array && array.length)\n    ? baseWhile(array, baseIteratee(predicate, 3), true)\n    : [];\n}\n\nexport default dropWhile;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/dropWhile.js","import baseFill from './_baseFill';\nimport isIterateeCall from './_isIterateeCall';\n\n/**\n * Fills elements of `array` with `value` from `start` up to, but not\n * including, `end`.\n *\n * **Note:** This method mutates `array`.\n *\n * @static\n * @memberOf _\n * @since 3.2.0\n * @category Array\n * @param {Array} array The array to fill.\n * @param {*} value The value to fill `array` with.\n * @param {number} [start=0] The start position.\n * @param {number} [end=array.length] The end position.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = [1, 2, 3];\n *\n * _.fill(array, 'a');\n * console.log(array);\n * // => ['a', 'a', 'a']\n *\n * _.fill(Array(3), 2);\n * // => [2, 2, 2]\n *\n * _.fill([4, 6, 8, 10], '*', 1, 3);\n * // => [4, '*', '*', 10]\n */\nfunction fill(array, value, start, end) {\n  var length = array ? array.length : 0;\n  if (!length) {\n    return [];\n  }\n  if (start && typeof start != 'number' && isIterateeCall(array, value, start)) {\n    start = 0;\n    end = length;\n  }\n  return baseFill(array, value, start, end);\n}\n\nexport default fill;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/fill.js","import baseFindIndex from './_baseFindIndex';\nimport baseIteratee from './_baseIteratee';\n\n/**\n * This method is like `_.find` except that it returns the index of the first\n * element `predicate` returns truthy for instead of the element itself.\n *\n * @static\n * @memberOf _\n * @since 1.1.0\n * @category Array\n * @param {Array} array The array to search.\n * @param {Array|Function|Object|string} [predicate=_.identity]\n *  The function invoked per iteration.\n * @returns {number} Returns the index of the found element, else `-1`.\n * @example\n *\n * var users = [\n *   { 'user': 'barney',  'active': false },\n *   { 'user': 'fred',    'active': false },\n *   { 'user': 'pebbles', 'active': true }\n * ];\n *\n * _.findIndex(users, function(o) { return o.user == 'barney'; });\n * // => 0\n *\n * // The `_.matches` iteratee shorthand.\n * _.findIndex(users, { 'user': 'fred', 'active': false });\n * // => 1\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.findIndex(users, ['active', false]);\n * // => 0\n *\n * // The `_.property` iteratee shorthand.\n * _.findIndex(users, 'active');\n * // => 2\n */\nfunction findIndex(array, predicate) {\n  return (array && array.length)\n    ? baseFindIndex(array, baseIteratee(predicate, 3))\n    : -1;\n}\n\nexport default findIndex;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/findIndex.js","import baseFindIndex from './_baseFindIndex';\nimport baseIteratee from './_baseIteratee';\n\n/**\n * This method is like `_.findIndex` except that it iterates over elements\n * of `collection` from right to left.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Array\n * @param {Array} array The array to search.\n * @param {Array|Function|Object|string} [predicate=_.identity]\n *  The function invoked per iteration.\n * @returns {number} Returns the index of the found element, else `-1`.\n * @example\n *\n * var users = [\n *   { 'user': 'barney',  'active': true },\n *   { 'user': 'fred',    'active': false },\n *   { 'user': 'pebbles', 'active': false }\n * ];\n *\n * _.findLastIndex(users, function(o) { return o.user == 'pebbles'; });\n * // => 2\n *\n * // The `_.matches` iteratee shorthand.\n * _.findLastIndex(users, { 'user': 'barney', 'active': true });\n * // => 0\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.findLastIndex(users, ['active', false]);\n * // => 2\n *\n * // The `_.property` iteratee shorthand.\n * _.findLastIndex(users, 'active');\n * // => 0\n */\nfunction findLastIndex(array, predicate) {\n  return (array && array.length)\n    ? baseFindIndex(array, baseIteratee(predicate, 3), true)\n    : -1;\n}\n\nexport default findLastIndex;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/findLastIndex.js","export { default } from './head'\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/first.js","import baseFlatten from './_baseFlatten';\n\n/**\n * Flattens `array` a single level deep.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to flatten.\n * @returns {Array} Returns the new flattened array.\n * @example\n *\n * _.flatten([1, [2, [3, [4]], 5]]);\n * // => [1, 2, [3, [4]], 5]\n */\nfunction flatten(array) {\n  var length = array ? array.length : 0;\n  return length ? baseFlatten(array, 1) : [];\n}\n\nexport default flatten;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/flatten.js","import baseFlatten from './_baseFlatten';\n\n/** Used as references for various `Number` constants. */\nvar INFINITY = 1 / 0;\n\n/**\n * Recursively flattens `array`.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to flatten.\n * @returns {Array} Returns the new flattened array.\n * @example\n *\n * _.flattenDeep([1, [2, [3, [4]], 5]]);\n * // => [1, 2, 3, 4, 5]\n */\nfunction flattenDeep(array) {\n  var length = array ? array.length : 0;\n  return length ? baseFlatten(array, INFINITY) : [];\n}\n\nexport default flattenDeep;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/flattenDeep.js","import baseFlatten from './_baseFlatten';\nimport toInteger from './toInteger';\n\n/**\n * Recursively flatten `array` up to `depth` times.\n *\n * @static\n * @memberOf _\n * @since 4.4.0\n * @category Array\n * @param {Array} array The array to flatten.\n * @param {number} [depth=1] The maximum recursion depth.\n * @returns {Array} Returns the new flattened array.\n * @example\n *\n * var array = [1, [2, [3, [4]], 5]];\n *\n * _.flattenDepth(array, 1);\n * // => [1, 2, [3, [4]], 5]\n *\n * _.flattenDepth(array, 2);\n * // => [1, 2, 3, [4], 5]\n */\nfunction flattenDepth(array, depth) {\n  var length = array ? array.length : 0;\n  if (!length) {\n    return [];\n  }\n  depth = depth === undefined ? 1 : toInteger(depth);\n  return baseFlatten(array, depth);\n}\n\nexport default flattenDepth;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/flattenDepth.js","/**\n * The inverse of `_.toPairs`; this method returns an object composed\n * from key-value `pairs`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} pairs The key-value pairs.\n * @returns {Object} Returns the new object.\n * @example\n *\n * _.fromPairs([['fred', 30], ['barney', 40]]);\n * // => { 'fred': 30, 'barney': 40 }\n */\nfunction fromPairs(pairs) {\n  var index = -1,\n      length = pairs ? pairs.length : 0,\n      result = {};\n\n  while (++index < length) {\n    var pair = pairs[index];\n    result[pair[0]] = pair[1];\n  }\n  return result;\n}\n\nexport default fromPairs;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/fromPairs.js","import baseGet from './_baseGet';\n\n/**\n * Gets the value at `path` of `object`. If the resolved value is\n * `undefined`, the `defaultValue` is used in its place.\n *\n * @static\n * @memberOf _\n * @since 3.7.0\n * @category Object\n * @param {Object} object The object to query.\n * @param {Array|string} path The path of the property to get.\n * @param {*} [defaultValue] The value returned for `undefined` resolved values.\n * @returns {*} Returns the resolved value.\n * @example\n *\n * var object = { 'a': [{ 'b': { 'c': 3 } }] };\n *\n * _.get(object, 'a[0].b.c');\n * // => 3\n *\n * _.get(object, ['a', '0', 'b', 'c']);\n * // => 3\n *\n * _.get(object, 'a.b.c', 'default');\n * // => 'default'\n */\nfunction get(object, path, defaultValue) {\n  var result = object == null ? undefined : baseGet(object, path);\n  return result === undefined ? defaultValue : result;\n}\n\nexport default get;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/get.js","/**\n * This method returns the first argument given to it.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Util\n * @param {*} value Any value.\n * @returns {*} Returns `value`.\n * @example\n *\n * var object = { 'user': 'fred' };\n *\n * _.identity(object) === object;\n * // => true\n */\nfunction identity(value) {\n  return value;\n}\n\nexport default identity;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/identity.js","import baseIndexOf from './_baseIndexOf';\nimport toInteger from './toInteger';\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeMax = Math.max;\n\n/**\n * Gets the index at which the first occurrence of `value` is found in `array`\n * using [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)\n * for equality comparisons. If `fromIndex` is negative, it's used as the\n * offset from the end of `array`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to search.\n * @param {*} value The value to search for.\n * @param {number} [fromIndex=0] The index to search from.\n * @returns {number} Returns the index of the matched value, else `-1`.\n * @example\n *\n * _.indexOf([1, 2, 1, 2], 2);\n * // => 1\n *\n * // Search from the `fromIndex`.\n * _.indexOf([1, 2, 1, 2], 2, 2);\n * // => 3\n */\nfunction indexOf(array, value, fromIndex) {\n  var length = array ? array.length : 0;\n  if (!length) {\n    return -1;\n  }\n  fromIndex = toInteger(fromIndex);\n  if (fromIndex < 0) {\n    fromIndex = nativeMax(length + fromIndex, 0);\n  }\n  return baseIndexOf(array, value, fromIndex);\n}\n\nexport default indexOf;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/indexOf.js","import dropRight from './dropRight';\n\n/**\n * Gets all but the last element of `array`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to query.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.initial([1, 2, 3]);\n * // => [1, 2]\n */\nfunction initial(array) {\n  return dropRight(array, 1);\n}\n\nexport default initial;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/initial.js","import arrayMap from './_arrayMap';\nimport baseIntersection from './_baseIntersection';\nimport castArrayLikeObject from './_castArrayLikeObject';\nimport rest from './rest';\n\n/**\n * Creates an array of unique values that are included in all given arrays\n * using [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)\n * for equality comparisons. The order of result values is determined by the\n * order they occur in the first array.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @returns {Array} Returns the new array of intersecting values.\n * @example\n *\n * _.intersection([2, 1], [4, 2], [1, 2]);\n * // => [2]\n */\nvar intersection = rest(function(arrays) {\n  var mapped = arrayMap(arrays, castArrayLikeObject);\n  return (mapped.length && mapped[0] === arrays[0])\n    ? baseIntersection(mapped)\n    : [];\n});\n\nexport default intersection;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/intersection.js","import arrayMap from './_arrayMap';\nimport baseIntersection from './_baseIntersection';\nimport baseIteratee from './_baseIteratee';\nimport castArrayLikeObject from './_castArrayLikeObject';\nimport last from './last';\nimport rest from './rest';\n\n/**\n * This method is like `_.intersection` except that it accepts `iteratee`\n * which is invoked for each element of each `arrays` to generate the criterion\n * by which they're compared. Result values are chosen from the first array.\n * The iteratee is invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Array|Function|Object|string} [iteratee=_.identity]\n *  The iteratee invoked per element.\n * @returns {Array} Returns the new array of intersecting values.\n * @example\n *\n * _.intersectionBy([2.1, 1.2], [4.3, 2.4], Math.floor);\n * // => [2.1]\n *\n * // The `_.property` iteratee shorthand.\n * _.intersectionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');\n * // => [{ 'x': 1 }]\n */\nvar intersectionBy = rest(function(arrays) {\n  var iteratee = last(arrays),\n      mapped = arrayMap(arrays, castArrayLikeObject);\n\n  if (iteratee === last(mapped)) {\n    iteratee = undefined;\n  } else {\n    mapped.pop();\n  }\n  return (mapped.length && mapped[0] === arrays[0])\n    ? baseIntersection(mapped, baseIteratee(iteratee))\n    : [];\n});\n\nexport default intersectionBy;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/intersectionBy.js","import arrayMap from './_arrayMap';\nimport baseIntersection from './_baseIntersection';\nimport castArrayLikeObject from './_castArrayLikeObject';\nimport last from './last';\nimport rest from './rest';\n\n/**\n * This method is like `_.intersection` except that it accepts `comparator`\n * which is invoked to compare elements of `arrays`. Result values are chosen\n * from the first array. The comparator is invoked with two arguments:\n * (arrVal, othVal).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of intersecting values.\n * @example\n *\n * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];\n *\n * _.intersectionWith(objects, others, _.isEqual);\n * // => [{ 'x': 1, 'y': 2 }]\n */\nvar intersectionWith = rest(function(arrays) {\n  var comparator = last(arrays),\n      mapped = arrayMap(arrays, castArrayLikeObject);\n\n  if (comparator === last(mapped)) {\n    comparator = undefined;\n  } else {\n    mapped.pop();\n  }\n  return (mapped.length && mapped[0] === arrays[0])\n    ? baseIntersection(mapped, undefined, comparator)\n    : [];\n});\n\nexport default intersectionWith;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/intersectionWith.js","import isFunction from './isFunction';\nimport isHostObject from './_isHostObject';\nimport isObject from './isObject';\nimport toSource from './_toSource';\n\n/**\n * Used to match `RegExp`\n * [syntax characters](http://ecma-international.org/ecma-262/6.0/#sec-patterns).\n */\nvar reRegExpChar = /[\\\\^$.*+?()[\\]{}|]/g;\n\n/** Used to detect host constructors (Safari). */\nvar reIsHostCtor = /^\\[object .+?Constructor\\]$/;\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to resolve the decompiled source of functions. */\nvar funcToString = Function.prototype.toString;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/** Used to detect if a method is native. */\nvar reIsNative = RegExp('^' +\n  funcToString.call(hasOwnProperty).replace(reRegExpChar, '\\\\$&')\n  .replace(/hasOwnProperty|(function).*?(?=\\\\\\()| for .+?(?=\\\\\\])/g, '$1.*?') + '$'\n);\n\n/**\n * Checks if `value` is a native function.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a native function,\n *  else `false`.\n * @example\n *\n * _.isNative(Array.prototype.push);\n * // => true\n *\n * _.isNative(_);\n * // => false\n */\nfunction isNative(value) {\n  if (!isObject(value)) {\n    return false;\n  }\n  var pattern = (isFunction(value) || isHostObject(value)) ? reIsNative : reIsHostCtor;\n  return pattern.test(toSource(value));\n}\n\nexport default isNative;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/isNative.js","/** Used for built-in method references. */\nvar arrayProto = Array.prototype;\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeJoin = arrayProto.join;\n\n/**\n * Converts all elements in `array` into a string separated by `separator`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to convert.\n * @param {string} [separator=','] The element separator.\n * @returns {string} Returns the joined string.\n * @example\n *\n * _.join(['a', 'b', 'c'], '~');\n * // => 'a~b~c'\n */\nfunction join(array, separator) {\n  return array ? nativeJoin.call(array, separator) : '';\n}\n\nexport default join;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/join.js","import indexOfNaN from './_indexOfNaN';\nimport toInteger from './toInteger';\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeMax = Math.max,\n    nativeMin = Math.min;\n\n/**\n * This method is like `_.indexOf` except that it iterates over elements of\n * `array` from right to left.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to search.\n * @param {*} value The value to search for.\n * @param {number} [fromIndex=array.length-1] The index to search from.\n * @returns {number} Returns the index of the matched value, else `-1`.\n * @example\n *\n * _.lastIndexOf([1, 2, 1, 2], 2);\n * // => 3\n *\n * // Search from the `fromIndex`.\n * _.lastIndexOf([1, 2, 1, 2], 2, 2);\n * // => 1\n */\nfunction lastIndexOf(array, value, fromIndex) {\n  var length = array ? array.length : 0;\n  if (!length) {\n    return -1;\n  }\n  var index = length;\n  if (fromIndex !== undefined) {\n    index = toInteger(fromIndex);\n    index = (\n      index < 0\n        ? nativeMax(length + index, 0)\n        : nativeMin(index, length - 1)\n    ) + 1;\n  }\n  if (value !== value) {\n    return indexOfNaN(array, index, true);\n  }\n  while (index--) {\n    if (array[index] === value) {\n      return index;\n    }\n  }\n  return -1;\n}\n\nexport default lastIndexOf;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/lastIndexOf.js","import baseNth from './_baseNth';\nimport toInteger from './toInteger';\n\n/**\n * Gets the element at `n` index of `array`. If `n` is negative, the nth\n * element from the end is returned.\n *\n * @static\n * @memberOf _\n * @since 4.11.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {number} [n=0] The index of the element to return.\n * @returns {*} Returns the nth element of `array`.\n * @example\n *\n * var array = ['a', 'b', 'c', 'd'];\n *\n * _.nth(array, 1);\n * // => 'b'\n *\n * _.nth(array, -2);\n * // => 'c';\n */\nfunction nth(array, n) {\n  return (array && array.length) ? baseNth(array, toInteger(n)) : undefined;\n}\n\nexport default nth;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/nth.js","import pullAll from './pullAll';\nimport rest from './rest';\n\n/**\n * Removes all given values from `array` using\n * [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)\n * for equality comparisons.\n *\n * **Note:** Unlike `_.without`, this method mutates `array`. Use `_.remove`\n * to remove elements from an array by predicate.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {...*} [values] The values to remove.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = [1, 2, 3, 1, 2, 3];\n *\n * _.pull(array, 2, 3);\n * console.log(array);\n * // => [1, 1]\n */\nvar pull = rest(pullAll);\n\nexport default pull;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/pull.js","import baseIteratee from './_baseIteratee';\nimport basePullAll from './_basePullAll';\n\n/**\n * This method is like `_.pullAll` except that it accepts `iteratee` which is\n * invoked for each element of `array` and `values` to generate the criterion\n * by which they're compared. The iteratee is invoked with one argument: (value).\n *\n * **Note:** Unlike `_.differenceBy`, this method mutates `array`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {Array} values The values to remove.\n * @param {Array|Function|Object|string} [iteratee=_.identity]\n *  The iteratee invoked per element.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = [{ 'x': 1 }, { 'x': 2 }, { 'x': 3 }, { 'x': 1 }];\n *\n * _.pullAllBy(array, [{ 'x': 1 }, { 'x': 3 }], 'x');\n * console.log(array);\n * // => [{ 'x': 2 }]\n */\nfunction pullAllBy(array, values, iteratee) {\n  return (array && array.length && values && values.length)\n    ? basePullAll(array, values, baseIteratee(iteratee))\n    : array;\n}\n\nexport default pullAllBy;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/pullAllBy.js","import basePullAll from './_basePullAll';\n\n/**\n * This method is like `_.pullAll` except that it accepts `comparator` which\n * is invoked to compare elements of `array` to `values`. The comparator is\n * invoked with two arguments: (arrVal, othVal).\n *\n * **Note:** Unlike `_.differenceWith`, this method mutates `array`.\n *\n * @static\n * @memberOf _\n * @since 4.6.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {Array} values The values to remove.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = [{ 'x': 1, 'y': 2 }, { 'x': 3, 'y': 4 }, { 'x': 5, 'y': 6 }];\n *\n * _.pullAllWith(array, [{ 'x': 3, 'y': 4 }], _.isEqual);\n * console.log(array);\n * // => [{ 'x': 1, 'y': 2 }, { 'x': 5, 'y': 6 }]\n */\nfunction pullAllWith(array, values, comparator) {\n  return (array && array.length && values && values.length)\n    ? basePullAll(array, values, undefined, comparator)\n    : array;\n}\n\nexport default pullAllWith;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/pullAllWith.js","import arrayMap from './_arrayMap';\nimport baseAt from './_baseAt';\nimport baseFlatten from './_baseFlatten';\nimport basePullAt from './_basePullAt';\nimport compareAscending from './_compareAscending';\nimport isIndex from './_isIndex';\nimport rest from './rest';\n\n/**\n * Removes elements from `array` corresponding to `indexes` and returns an\n * array of removed elements.\n *\n * **Note:** Unlike `_.at`, this method mutates `array`.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {...(number|number[])} [indexes] The indexes of elements to remove.\n * @returns {Array} Returns the new array of removed elements.\n * @example\n *\n * var array = [5, 10, 15, 20];\n * var evens = _.pullAt(array, 1, 3);\n *\n * console.log(array);\n * // => [5, 15]\n *\n * console.log(evens);\n * // => [10, 20]\n */\nvar pullAt = rest(function(array, indexes) {\n  indexes = baseFlatten(indexes, 1);\n\n  var length = array ? array.length : 0,\n      result = baseAt(array, indexes);\n\n  basePullAt(array, arrayMap(indexes, function(index) {\n    return isIndex(index, length) ? +index : index;\n  }).sort(compareAscending));\n\n  return result;\n});\n\nexport default pullAt;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/pullAt.js","import baseIteratee from './_baseIteratee';\nimport basePullAt from './_basePullAt';\n\n/**\n * Removes all elements from `array` that `predicate` returns truthy for\n * and returns an array of the removed elements. The predicate is invoked\n * with three arguments: (value, index, array).\n *\n * **Note:** Unlike `_.filter`, this method mutates `array`. Use `_.pull`\n * to pull elements from an array by value.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {Array|Function|Object|string} [predicate=_.identity]\n *  The function invoked per iteration.\n * @returns {Array} Returns the new array of removed elements.\n * @example\n *\n * var array = [1, 2, 3, 4];\n * var evens = _.remove(array, function(n) {\n *   return n % 2 == 0;\n * });\n *\n * console.log(array);\n * // => [1, 3]\n *\n * console.log(evens);\n * // => [2, 4]\n */\nfunction remove(array, predicate) {\n  var result = [];\n  if (!(array && array.length)) {\n    return result;\n  }\n  var index = -1,\n      indexes = [],\n      length = array.length;\n\n  predicate = baseIteratee(predicate, 3);\n  while (++index < length) {\n    var value = array[index];\n    if (predicate(value, index, array)) {\n      result.push(value);\n      indexes.push(index);\n    }\n  }\n  basePullAt(array, indexes);\n  return result;\n}\n\nexport default remove;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/remove.js","/** Used for built-in method references. */\nvar arrayProto = Array.prototype;\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeReverse = arrayProto.reverse;\n\n/**\n * Reverses `array` so that the first element becomes the last, the second\n * element becomes the second to last, and so on.\n *\n * **Note:** This method mutates `array` and is based on\n * [`Array#reverse`](https://mdn.io/Array/reverse).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = [1, 2, 3];\n *\n * _.reverse(array);\n * // => [3, 2, 1]\n *\n * console.log(array);\n * // => [3, 2, 1]\n */\nfunction reverse(array) {\n  return array ? nativeReverse.call(array) : array;\n}\n\nexport default reverse;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/reverse.js","import baseSlice from './_baseSlice';\nimport isIterateeCall from './_isIterateeCall';\nimport toInteger from './toInteger';\n\n/**\n * Creates a slice of `array` from `start` up to, but not including, `end`.\n *\n * **Note:** This method is used instead of\n * [`Array#slice`](https://mdn.io/Array/slice) to ensure dense arrays are\n * returned.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to slice.\n * @param {number} [start=0] The start position.\n * @param {number} [end=array.length] The end position.\n * @returns {Array} Returns the slice of `array`.\n */\nfunction slice(array, start, end) {\n  var length = array ? array.length : 0;\n  if (!length) {\n    return [];\n  }\n  if (end && typeof end != 'number' && isIterateeCall(array, start, end)) {\n    start = 0;\n    end = length;\n  }\n  else {\n    start = start == null ? 0 : toInteger(start);\n    end = end === undefined ? length : toInteger(end);\n  }\n  return baseSlice(array, start, end);\n}\n\nexport default slice;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/slice.js","import baseSortedIndex from './_baseSortedIndex';\n\n/**\n * Uses a binary search to determine the lowest index at which `value`\n * should be inserted into `array` in order to maintain its sort order.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @returns {number} Returns the index at which `value` should be inserted\n *  into `array`.\n * @example\n *\n * _.sortedIndex([30, 50], 40);\n * // => 1\n *\n * _.sortedIndex([4, 5], 4);\n * // => 0\n */\nfunction sortedIndex(array, value) {\n  return baseSortedIndex(array, value);\n}\n\nexport default sortedIndex;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/sortedIndex.js","import baseIteratee from './_baseIteratee';\nimport baseSortedIndexBy from './_baseSortedIndexBy';\n\n/**\n * This method is like `_.sortedIndex` except that it accepts `iteratee`\n * which is invoked for `value` and each element of `array` to compute their\n * sort ranking. The iteratee is invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @param {Array|Function|Object|string} [iteratee=_.identity]\n *  The iteratee invoked per element.\n * @returns {number} Returns the index at which `value` should be inserted\n *  into `array`.\n * @example\n *\n * var dict = { 'thirty': 30, 'forty': 40, 'fifty': 50 };\n *\n * _.sortedIndexBy(['thirty', 'fifty'], 'forty', _.propertyOf(dict));\n * // => 1\n *\n * // The `_.property` iteratee shorthand.\n * _.sortedIndexBy([{ 'x': 4 }, { 'x': 5 }], { 'x': 4 }, 'x');\n * // => 0\n */\nfunction sortedIndexBy(array, value, iteratee) {\n  return baseSortedIndexBy(array, value, baseIteratee(iteratee));\n}\n\nexport default sortedIndexBy;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/sortedIndexBy.js","import baseSortedIndex from './_baseSortedIndex';\nimport eq from './eq';\n\n/**\n * This method is like `_.indexOf` except that it performs a binary\n * search on a sorted `array`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to search.\n * @param {*} value The value to search for.\n * @returns {number} Returns the index of the matched value, else `-1`.\n * @example\n *\n * _.sortedIndexOf([1, 1, 2, 2], 2);\n * // => 2\n */\nfunction sortedIndexOf(array, value) {\n  var length = array ? array.length : 0;\n  if (length) {\n    var index = baseSortedIndex(array, value);\n    if (index < length && eq(array[index], value)) {\n      return index;\n    }\n  }\n  return -1;\n}\n\nexport default sortedIndexOf;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/sortedIndexOf.js","import baseSortedIndex from './_baseSortedIndex';\n\n/**\n * This method is like `_.sortedIndex` except that it returns the highest\n * index at which `value` should be inserted into `array` in order to\n * maintain its sort order.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @returns {number} Returns the index at which `value` should be inserted\n *  into `array`.\n * @example\n *\n * _.sortedLastIndex([4, 5], 4);\n * // => 1\n */\nfunction sortedLastIndex(array, value) {\n  return baseSortedIndex(array, value, true);\n}\n\nexport default sortedLastIndex;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/sortedLastIndex.js","import baseIteratee from './_baseIteratee';\nimport baseSortedIndexBy from './_baseSortedIndexBy';\n\n/**\n * This method is like `_.sortedLastIndex` except that it accepts `iteratee`\n * which is invoked for `value` and each element of `array` to compute their\n * sort ranking. The iteratee is invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @param {Array|Function|Object|string} [iteratee=_.identity]\n *  The iteratee invoked per element.\n * @returns {number} Returns the index at which `value` should be inserted\n *  into `array`.\n * @example\n *\n * // The `_.property` iteratee shorthand.\n * _.sortedLastIndexBy([{ 'x': 4 }, { 'x': 5 }], { 'x': 4 }, 'x');\n * // => 1\n */\nfunction sortedLastIndexBy(array, value, iteratee) {\n  return baseSortedIndexBy(array, value, baseIteratee(iteratee), true);\n}\n\nexport default sortedLastIndexBy;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/sortedLastIndexBy.js","import baseSortedIndex from './_baseSortedIndex';\nimport eq from './eq';\n\n/**\n * This method is like `_.lastIndexOf` except that it performs a binary\n * search on a sorted `array`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to search.\n * @param {*} value The value to search for.\n * @returns {number} Returns the index of the matched value, else `-1`.\n * @example\n *\n * _.sortedLastIndexOf([1, 1, 2, 2], 2);\n * // => 3\n */\nfunction sortedLastIndexOf(array, value) {\n  var length = array ? array.length : 0;\n  if (length) {\n    var index = baseSortedIndex(array, value, true) - 1;\n    if (eq(array[index], value)) {\n      return index;\n    }\n  }\n  return -1;\n}\n\nexport default sortedLastIndexOf;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/sortedLastIndexOf.js","import baseSortedUniq from './_baseSortedUniq';\n\n/**\n * This method is like `_.uniq` except that it's designed and optimized\n * for sorted arrays.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @returns {Array} Returns the new duplicate free array.\n * @example\n *\n * _.sortedUniq([1, 1, 2]);\n * // => [1, 2]\n */\nfunction sortedUniq(array) {\n  return (array && array.length)\n    ? baseSortedUniq(array)\n    : [];\n}\n\nexport default sortedUniq;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/sortedUniq.js","import baseIteratee from './_baseIteratee';\nimport baseSortedUniq from './_baseSortedUniq';\n\n/**\n * This method is like `_.uniqBy` except that it's designed and optimized\n * for sorted arrays.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @returns {Array} Returns the new duplicate free array.\n * @example\n *\n * _.sortedUniqBy([1.1, 1.2, 2.3, 2.4], Math.floor);\n * // => [1.1, 2.3]\n */\nfunction sortedUniqBy(array, iteratee) {\n  return (array && array.length)\n    ? baseSortedUniq(array, baseIteratee(iteratee))\n    : [];\n}\n\nexport default sortedUniqBy;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/sortedUniqBy.js","import drop from './drop';\n\n/**\n * Gets all but the first element of `array`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.tail([1, 2, 3]);\n * // => [2, 3]\n */\nfunction tail(array) {\n  return drop(array, 1);\n}\n\nexport default tail;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/tail.js","import baseSlice from './_baseSlice';\nimport toInteger from './toInteger';\n\n/**\n * Creates a slice of `array` with `n` elements taken from the beginning.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {number} [n=1] The number of elements to take.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.take([1, 2, 3]);\n * // => [1]\n *\n * _.take([1, 2, 3], 2);\n * // => [1, 2]\n *\n * _.take([1, 2, 3], 5);\n * // => [1, 2, 3]\n *\n * _.take([1, 2, 3], 0);\n * // => []\n */\nfunction take(array, n, guard) {\n  if (!(array && array.length)) {\n    return [];\n  }\n  n = (guard || n === undefined) ? 1 : toInteger(n);\n  return baseSlice(array, 0, n < 0 ? 0 : n);\n}\n\nexport default take;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/take.js","import baseSlice from './_baseSlice';\nimport toInteger from './toInteger';\n\n/**\n * Creates a slice of `array` with `n` elements taken from the end.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {number} [n=1] The number of elements to take.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.takeRight([1, 2, 3]);\n * // => [3]\n *\n * _.takeRight([1, 2, 3], 2);\n * // => [2, 3]\n *\n * _.takeRight([1, 2, 3], 5);\n * // => [1, 2, 3]\n *\n * _.takeRight([1, 2, 3], 0);\n * // => []\n */\nfunction takeRight(array, n, guard) {\n  var length = array ? array.length : 0;\n  if (!length) {\n    return [];\n  }\n  n = (guard || n === undefined) ? 1 : toInteger(n);\n  n = length - n;\n  return baseSlice(array, n < 0 ? 0 : n, length);\n}\n\nexport default takeRight;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/takeRight.js","import baseIteratee from './_baseIteratee';\nimport baseWhile from './_baseWhile';\n\n/**\n * Creates a slice of `array` with elements taken from the end. Elements are\n * taken until `predicate` returns falsey. The predicate is invoked with\n * three arguments: (value, index, array).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {Array|Function|Object|string} [predicate=_.identity]\n *  The function invoked per iteration.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * var users = [\n *   { 'user': 'barney',  'active': true },\n *   { 'user': 'fred',    'active': false },\n *   { 'user': 'pebbles', 'active': false }\n * ];\n *\n * _.takeRightWhile(users, function(o) { return !o.active; });\n * // => objects for ['fred', 'pebbles']\n *\n * // The `_.matches` iteratee shorthand.\n * _.takeRightWhile(users, { 'user': 'pebbles', 'active': false });\n * // => objects for ['pebbles']\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.takeRightWhile(users, ['active', false]);\n * // => objects for ['fred', 'pebbles']\n *\n * // The `_.property` iteratee shorthand.\n * _.takeRightWhile(users, 'active');\n * // => []\n */\nfunction takeRightWhile(array, predicate) {\n  return (array && array.length)\n    ? baseWhile(array, baseIteratee(predicate, 3), false, true)\n    : [];\n}\n\nexport default takeRightWhile;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/takeRightWhile.js","import baseIteratee from './_baseIteratee';\nimport baseWhile from './_baseWhile';\n\n/**\n * Creates a slice of `array` with elements taken from the beginning. Elements\n * are taken until `predicate` returns falsey. The predicate is invoked with\n * three arguments: (value, index, array).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {Array|Function|Object|string} [predicate=_.identity]\n *  The function invoked per iteration.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * var users = [\n *   { 'user': 'barney',  'active': false },\n *   { 'user': 'fred',    'active': false},\n *   { 'user': 'pebbles', 'active': true }\n * ];\n *\n * _.takeWhile(users, function(o) { return !o.active; });\n * // => objects for ['barney', 'fred']\n *\n * // The `_.matches` iteratee shorthand.\n * _.takeWhile(users, { 'user': 'barney', 'active': false });\n * // => objects for ['barney']\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.takeWhile(users, ['active', false]);\n * // => objects for ['barney', 'fred']\n *\n * // The `_.property` iteratee shorthand.\n * _.takeWhile(users, 'active');\n * // => []\n */\nfunction takeWhile(array, predicate) {\n  return (array && array.length)\n    ? baseWhile(array, baseIteratee(predicate, 3))\n    : [];\n}\n\nexport default takeWhile;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/takeWhile.js","import isFunction from './isFunction';\nimport isObject from './isObject';\nimport isSymbol from './isSymbol';\n\n/** Used as references for various `Number` constants. */\nvar NAN = 0 / 0;\n\n/** Used to match leading and trailing whitespace. */\nvar reTrim = /^\\s+|\\s+$/g;\n\n/** Used to detect bad signed hexadecimal string values. */\nvar reIsBadHex = /^[-+]0x[0-9a-f]+$/i;\n\n/** Used to detect binary string values. */\nvar reIsBinary = /^0b[01]+$/i;\n\n/** Used to detect octal string values. */\nvar reIsOctal = /^0o[0-7]+$/i;\n\n/** Built-in method references without a dependency on `root`. */\nvar freeParseInt = parseInt;\n\n/**\n * Converts `value` to a number.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to process.\n * @returns {number} Returns the number.\n * @example\n *\n * _.toNumber(3.2);\n * // => 3.2\n *\n * _.toNumber(Number.MIN_VALUE);\n * // => 5e-324\n *\n * _.toNumber(Infinity);\n * // => Infinity\n *\n * _.toNumber('3.2');\n * // => 3.2\n */\nfunction toNumber(value) {\n  if (typeof value == 'number') {\n    return value;\n  }\n  if (isSymbol(value)) {\n    return NAN;\n  }\n  if (isObject(value)) {\n    var other = isFunction(value.valueOf) ? value.valueOf() : value;\n    value = isObject(other) ? (other + '') : other;\n  }\n  if (typeof value != 'string') {\n    return value === 0 ? value : +value;\n  }\n  value = value.replace(reTrim, '');\n  var isBinary = reIsBinary.test(value);\n  return (isBinary || reIsOctal.test(value))\n    ? freeParseInt(value.slice(2), isBinary ? 2 : 8)\n    : (reIsBadHex.test(value) ? NAN : +value);\n}\n\nexport default toNumber;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/toNumber.js","import baseFlatten from './_baseFlatten';\nimport baseUniq from './_baseUniq';\nimport isArrayLikeObject from './isArrayLikeObject';\nimport rest from './rest';\n\n/**\n * Creates an array of unique values, in order, from all given arrays using\n * [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)\n * for equality comparisons.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @returns {Array} Returns the new array of combined values.\n * @example\n *\n * _.union([2, 1], [4, 2], [1, 2]);\n * // => [2, 1, 4]\n */\nvar union = rest(function(arrays) {\n  return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true));\n});\n\nexport default union;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/union.js","import baseFlatten from './_baseFlatten';\nimport baseIteratee from './_baseIteratee';\nimport baseUniq from './_baseUniq';\nimport isArrayLikeObject from './isArrayLikeObject';\nimport last from './last';\nimport rest from './rest';\n\n/**\n * This method is like `_.union` except that it accepts `iteratee` which is\n * invoked for each element of each `arrays` to generate the criterion by\n * which uniqueness is computed. The iteratee is invoked with one argument:\n * (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Array|Function|Object|string} [iteratee=_.identity]\n *  The iteratee invoked per element.\n * @returns {Array} Returns the new array of combined values.\n * @example\n *\n * _.unionBy([2.1, 1.2], [4.3, 2.4], Math.floor);\n * // => [2.1, 1.2, 4.3]\n *\n * // The `_.property` iteratee shorthand.\n * _.unionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');\n * // => [{ 'x': 1 }, { 'x': 2 }]\n */\nvar unionBy = rest(function(arrays) {\n  var iteratee = last(arrays);\n  if (isArrayLikeObject(iteratee)) {\n    iteratee = undefined;\n  }\n  return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), baseIteratee(iteratee));\n});\n\nexport default unionBy;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/unionBy.js","import baseFlatten from './_baseFlatten';\nimport baseUniq from './_baseUniq';\nimport isArrayLikeObject from './isArrayLikeObject';\nimport last from './last';\nimport rest from './rest';\n\n/**\n * This method is like `_.union` except that it accepts `comparator` which\n * is invoked to compare elements of `arrays`. The comparator is invoked\n * with two arguments: (arrVal, othVal).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of combined values.\n * @example\n *\n * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];\n *\n * _.unionWith(objects, others, _.isEqual);\n * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]\n */\nvar unionWith = rest(function(arrays) {\n  var comparator = last(arrays);\n  if (isArrayLikeObject(comparator)) {\n    comparator = undefined;\n  }\n  return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), undefined, comparator);\n});\n\nexport default unionWith;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/unionWith.js","import baseUniq from './_baseUniq';\n\n/**\n * Creates a duplicate-free version of an array, using\n * [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)\n * for equality comparisons, in which only the first occurrence of each\n * element is kept.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @returns {Array} Returns the new duplicate free array.\n * @example\n *\n * _.uniq([2, 1, 2]);\n * // => [2, 1]\n */\nfunction uniq(array) {\n  return (array && array.length)\n    ? baseUniq(array)\n    : [];\n}\n\nexport default uniq;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/uniq.js","import baseIteratee from './_baseIteratee';\nimport baseUniq from './_baseUniq';\n\n/**\n * This method is like `_.uniq` except that it accepts `iteratee` which is\n * invoked for each element in `array` to generate the criterion by which\n * uniqueness is computed. The iteratee is invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {Array|Function|Object|string} [iteratee=_.identity]\n *  The iteratee invoked per element.\n * @returns {Array} Returns the new duplicate free array.\n * @example\n *\n * _.uniqBy([2.1, 1.2, 2.3], Math.floor);\n * // => [2.1, 1.2]\n *\n * // The `_.property` iteratee shorthand.\n * _.uniqBy([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x');\n * // => [{ 'x': 1 }, { 'x': 2 }]\n */\nfunction uniqBy(array, iteratee) {\n  return (array && array.length)\n    ? baseUniq(array, baseIteratee(iteratee))\n    : [];\n}\n\nexport default uniqBy;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/uniqBy.js","import baseUniq from './_baseUniq';\n\n/**\n * This method is like `_.uniq` except that it accepts `comparator` which\n * is invoked to compare elements of `array`. The comparator is invoked with\n * two arguments: (arrVal, othVal).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new duplicate free array.\n * @example\n *\n * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 },  { 'x': 1, 'y': 2 }];\n *\n * _.uniqWith(objects, _.isEqual);\n * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]\n */\nfunction uniqWith(array, comparator) {\n  return (array && array.length)\n    ? baseUniq(array, undefined, comparator)\n    : [];\n}\n\nexport default uniqWith;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/uniqWith.js","import baseDifference from './_baseDifference';\nimport isArrayLikeObject from './isArrayLikeObject';\nimport rest from './rest';\n\n/**\n * Creates an array excluding all given values using\n * [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)\n * for equality comparisons.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {...*} [values] The values to exclude.\n * @returns {Array} Returns the new array of filtered values.\n * @see _.difference, _.xor\n * @example\n *\n * _.without([1, 2, 1, 3], 1, 2);\n * // => [3]\n */\nvar without = rest(function(array, values) {\n  return isArrayLikeObject(array)\n    ? baseDifference(array, values)\n    : [];\n});\n\nexport default without;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/without.js","import arrayFilter from './_arrayFilter';\nimport baseXor from './_baseXor';\nimport isArrayLikeObject from './isArrayLikeObject';\nimport rest from './rest';\n\n/**\n * Creates an array of unique values that is the\n * [symmetric difference](https://en.wikipedia.org/wiki/Symmetric_difference)\n * of the given arrays. The order of result values is determined by the order\n * they occur in the arrays.\n *\n * @static\n * @memberOf _\n * @since 2.4.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @returns {Array} Returns the new array of filtered values.\n * @see _.difference, _.without\n * @example\n *\n * _.xor([2, 1], [4, 2]);\n * // => [1, 4]\n */\nvar xor = rest(function(arrays) {\n  return baseXor(arrayFilter(arrays, isArrayLikeObject));\n});\n\nexport default xor;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/xor.js","import arrayFilter from './_arrayFilter';\nimport baseIteratee from './_baseIteratee';\nimport baseXor from './_baseXor';\nimport isArrayLikeObject from './isArrayLikeObject';\nimport last from './last';\nimport rest from './rest';\n\n/**\n * This method is like `_.xor` except that it accepts `iteratee` which is\n * invoked for each element of each `arrays` to generate the criterion by\n * which by which they're compared. The iteratee is invoked with one argument:\n * (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Array|Function|Object|string} [iteratee=_.identity]\n *  The iteratee invoked per element.\n * @returns {Array} Returns the new array of filtered values.\n * @example\n *\n * _.xorBy([2.1, 1.2], [4.3, 2.4], Math.floor);\n * // => [1.2, 4.3]\n *\n * // The `_.property` iteratee shorthand.\n * _.xorBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');\n * // => [{ 'x': 2 }]\n */\nvar xorBy = rest(function(arrays) {\n  var iteratee = last(arrays);\n  if (isArrayLikeObject(iteratee)) {\n    iteratee = undefined;\n  }\n  return baseXor(arrayFilter(arrays, isArrayLikeObject), baseIteratee(iteratee));\n});\n\nexport default xorBy;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/xorBy.js","import arrayFilter from './_arrayFilter';\nimport baseXor from './_baseXor';\nimport isArrayLikeObject from './isArrayLikeObject';\nimport last from './last';\nimport rest from './rest';\n\n/**\n * This method is like `_.xor` except that it accepts `comparator` which is\n * invoked to compare elements of `arrays`. The comparator is invoked with\n * two arguments: (arrVal, othVal).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of filtered values.\n * @example\n *\n * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];\n *\n * _.xorWith(objects, others, _.isEqual);\n * // => [{ 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]\n */\nvar xorWith = rest(function(arrays) {\n  var comparator = last(arrays);\n  if (isArrayLikeObject(comparator)) {\n    comparator = undefined;\n  }\n  return baseXor(arrayFilter(arrays, isArrayLikeObject), undefined, comparator);\n});\n\nexport default xorWith;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/xorWith.js","import rest from './rest';\nimport unzip from './unzip';\n\n/**\n * Creates an array of grouped elements, the first of which contains the\n * first elements of the given arrays, the second of which contains the\n * second elements of the given arrays, and so on.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {...Array} [arrays] The arrays to process.\n * @returns {Array} Returns the new array of grouped elements.\n * @example\n *\n * _.zip(['fred', 'barney'], [30, 40], [true, false]);\n * // => [['fred', 30, true], ['barney', 40, false]]\n */\nvar zip = rest(unzip);\n\nexport default zip;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/zip.js","import assignValue from './_assignValue';\nimport baseZipObject from './_baseZipObject';\n\n/**\n * This method is like `_.fromPairs` except that it accepts two arrays,\n * one of property identifiers and one of corresponding values.\n *\n * @static\n * @memberOf _\n * @since 0.4.0\n * @category Array\n * @param {Array} [props=[]] The property identifiers.\n * @param {Array} [values=[]] The property values.\n * @returns {Object} Returns the new object.\n * @example\n *\n * _.zipObject(['a', 'b'], [1, 2]);\n * // => { 'a': 1, 'b': 2 }\n */\nfunction zipObject(props, values) {\n  return baseZipObject(props || [], values || [], assignValue);\n}\n\nexport default zipObject;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/zipObject.js","import baseSet from './_baseSet';\nimport baseZipObject from './_baseZipObject';\n\n/**\n * This method is like `_.zipObject` except that it supports property paths.\n *\n * @static\n * @memberOf _\n * @since 4.1.0\n * @category Array\n * @param {Array} [props=[]] The property identifiers.\n * @param {Array} [values=[]] The property values.\n * @returns {Object} Returns the new object.\n * @example\n *\n * _.zipObjectDeep(['a.b[0].c', 'a.b[1].d'], [1, 2]);\n * // => { 'a': { 'b': [{ 'c': 1 }, { 'd': 2 }] } }\n */\nfunction zipObjectDeep(props, values) {\n  return baseZipObject(props || [], values || [], baseSet);\n}\n\nexport default zipObjectDeep;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/zipObjectDeep.js","import rest from './rest';\nimport unzipWith from './unzipWith';\n\n/**\n * This method is like `_.zip` except that it accepts `iteratee` to specify\n * how grouped values should be combined. The iteratee is invoked with the\n * elements of each group: (...group).\n *\n * @static\n * @memberOf _\n * @since 3.8.0\n * @category Array\n * @param {...Array} [arrays] The arrays to process.\n * @param {Function} [iteratee=_.identity] The function to combine grouped values.\n * @returns {Array} Returns the new array of grouped elements.\n * @example\n *\n * _.zipWith([1, 2], [10, 20], [100, 200], function(a, b, c) {\n *   return a + b + c;\n * });\n * // => [111, 222]\n */\nvar zipWith = rest(function(arrays) {\n  var length = arrays.length,\n      iteratee = length > 1 ? arrays[length - 1] : undefined;\n\n  iteratee = typeof iteratee == 'function' ? (arrays.pop(), iteratee) : undefined;\n  return unzipWith(arrays, iteratee);\n});\n\nexport default zipWith;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/zipWith.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/objecttomap\n */\n\n/**\n * Transforms object to map.\n *\n *\t\tconst map = objectToMap( { 'foo': 1, 'bar': 2 } );\n *\t\tmap.get( 'foo' ); // 1\n *\n * @param {Object} obj Object to transform.\n * @returns {Map} Map created from object.\n */\nexport default function objectToMap( obj ) {\n\tconst map = new Map();\n\n\tfor ( let key in obj ) {\n\t\tmap.set( key, obj[ key ] );\n\t}\n\n\treturn map;\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/objecttomap.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * Set of utils to handle unicode characters.\n *\n * @module utils/unicode\n */\n\n/**\n * Checks whether given `character` is a combining mark.\n *\n * @param {String} character Character to check.\n * @returns {Boolean}\n */\nexport function isCombiningMark( character ) {\n\treturn !!character && character.length == 1 && /[\\u0300-\\u036f\\u1ab0-\\u1aff\\u1dc0-\\u1dff\\u20d0-\\u20ff\\ufe20-\\ufe2f]/.test( character );\n}\n\n/**\n * Checks whether given `character` is a high half of surrogate pair.\n *\n * Using UTF-16 terminology, a surrogate pair denotes UTF-16 character using two UTF-8 characters. The surrogate pair\n * consist of high surrogate pair character followed by low surrogate pair character.\n *\n * @param {String} character Character to check.\n * @returns {Boolean}\n */\nexport function isHighSurrogateHalf( character ) {\n\treturn !!character && character.length == 1 && /[\\ud800-\\udbff]/.test( character );\n}\n\n/**\n * Checks whether given `character` is a low half of surrogate pair.\n *\n * Using UTF-16 terminology, a surrogate pair denotes UTF-16 character using two UTF-8 characters. The surrogate pair\n * consist of high surrogate pair character followed by low surrogate pair character.\n *\n * @param {String} character Character to check.\n * @returns {Boolean}\n */\nexport function isLowSurrogateHalf( character ) {\n\treturn !!character && character.length == 1 && /[\\udc00-\\udfff]/.test( character );\n}\n\n/**\n * Checks whether given offset in a string is inside a surrogate pair (between two surrogate halves).\n *\n * @param {String} string String to check.\n * @param {Number} offset Offset to check.\n * @returns {Boolean}\n */\nexport function isInsideSurrogatePair( string, offset ) {\n\treturn isHighSurrogateHalf( string.charAt( offset - 1 ) ) && isLowSurrogateHalf( string.charAt( offset ) );\n}\n\n/**\n * Checks whether given offset in a string is between base character and combining mark or between two combining marks.\n *\n * @param {String} string String to check.\n * @param {Number} offset Offset to check.\n * @returns {Boolean}\n */\nexport function isInsideCombinedSymbol( string, offset ) {\n\treturn isCombiningMark( string.charAt( offset ) );\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/unicode.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n */\n\nimport ClassicEditor from '@ckeditor/ckeditor5-editor-classic/src/classic';\nimport Autoformat from '@ckeditor/ckeditor5-autoformat/src/autoformat';\nimport ArticlePreset from '@ckeditor/ckeditor5-presets/src/article';\n\ntry {\n\tClassicEditor.create( document.querySelector( '#editor' ), {\n\t\tplugins: [\n\t\t\tAutoformat,\n\t\t\tArticlePreset\n\t\t],\n\t\ttoolbar: [ 'headings', 'bold', 'italic', 'link', 'unlink', 'bulletedList', 'numberedList', 'undo', 'redo' ]\n\t} ).then( ( editor ) => {\n\t\twindow.editor = editor;\n\t} )\n\t.catch( ( err ) => {\n\t\tconsole.error( err.stack );\n\t} );\n} catch ( err ) {\n\tshowCompatibilityMessage();\n}\n\nfunction showCompatibilityMessage() {\n\tconst editorElement = document.querySelector( '#editor' );\n\tconst message = document.createElement( 'p' );\n\n\tmessage.innerHTML = `\n\t\t<h2>That's a shame...</h2>\n\t\t<p>We're not proud of this but this early developer preview does not work in your web browser.</p>\n\t\t<p>Please consider using <a href=\"https://www.google.com/chrome/\">Google Chrome</a> instead.</p>\n\t\t<p>We're terribly sorry.</p>\n\t`;\n\n\tmessage.classList.add( 'message' );\n\n\teditorElement.style.display = 'none';\n\teditorElement.parentNode.insertBefore( message, editorElement );\n}\n\n\n\n// WEBPACK FOOTER //\n// ./js/app.js","/**\n * Copyright (c) 2014, Facebook, Inc.\n * All rights reserved.\n *\n * This source code is licensed under the BSD-style license found in the\n * https://raw.github.com/facebook/regenerator/master/LICENSE file. An\n * additional grant of patent rights can be found in the PATENTS file in\n * the same directory.\n */\n\n!(function(global) {\n  \"use strict\";\n\n  var Op = Object.prototype;\n  var hasOwn = Op.hasOwnProperty;\n  var undefined; // More compressible than void 0.\n  var $Symbol = typeof Symbol === \"function\" ? Symbol : {};\n  var iteratorSymbol = $Symbol.iterator || \"@@iterator\";\n  var toStringTagSymbol = $Symbol.toStringTag || \"@@toStringTag\";\n\n  var inModule = typeof module === \"object\";\n  var runtime = global.regeneratorRuntime;\n  if (runtime) {\n    if (inModule) {\n      // If regeneratorRuntime is defined globally and we're in a module,\n      // make the exports object identical to regeneratorRuntime.\n      module.exports = runtime;\n    }\n    // Don't bother evaluating the rest of this file if the runtime was\n    // already defined globally.\n    return;\n  }\n\n  // Define the runtime globally (as expected by generated code) as either\n  // module.exports (if we're in a module) or a new, empty object.\n  runtime = global.regeneratorRuntime = inModule ? module.exports : {};\n\n  function wrap(innerFn, outerFn, self, tryLocsList) {\n    // If outerFn provided and outerFn.prototype is a Generator, then outerFn.prototype instanceof Generator.\n    var protoGenerator = outerFn && outerFn.prototype instanceof Generator ? outerFn : Generator;\n    var generator = Object.create(protoGenerator.prototype);\n    var context = new Context(tryLocsList || []);\n\n    // The ._invoke method unifies the implementations of the .next,\n    // .throw, and .return methods.\n    generator._invoke = makeInvokeMethod(innerFn, self, context);\n\n    return generator;\n  }\n  runtime.wrap = wrap;\n\n  // Try/catch helper to minimize deoptimizations. Returns a completion\n  // record like context.tryEntries[i].completion. This interface could\n  // have been (and was previously) designed to take a closure to be\n  // invoked without arguments, but in all the cases we care about we\n  // already have an existing method we want to call, so there's no need\n  // to create a new function object. We can even get away with assuming\n  // the method takes exactly one argument, since that happens to be true\n  // in every case, so we don't have to touch the arguments object. The\n  // only additional allocation required is the completion record, which\n  // has a stable shape and so hopefully should be cheap to allocate.\n  function tryCatch(fn, obj, arg) {\n    try {\n      return { type: \"normal\", arg: fn.call(obj, arg) };\n    } catch (err) {\n      return { type: \"throw\", arg: err };\n    }\n  }\n\n  var GenStateSuspendedStart = \"suspendedStart\";\n  var GenStateSuspendedYield = \"suspendedYield\";\n  var GenStateExecuting = \"executing\";\n  var GenStateCompleted = \"completed\";\n\n  // Returning this object from the innerFn has the same effect as\n  // breaking out of the dispatch switch statement.\n  var ContinueSentinel = {};\n\n  // Dummy constructor functions that we use as the .constructor and\n  // .constructor.prototype properties for functions that return Generator\n  // objects. For full spec compliance, you may wish to configure your\n  // minifier not to mangle the names of these two functions.\n  function Generator() {}\n  function GeneratorFunction() {}\n  function GeneratorFunctionPrototype() {}\n\n  // This is a polyfill for %IteratorPrototype% for environments that\n  // don't natively support it.\n  var IteratorPrototype = {};\n  IteratorPrototype[iteratorSymbol] = function () {\n    return this;\n  };\n\n  var getProto = Object.getPrototypeOf;\n  var NativeIteratorPrototype = getProto && getProto(getProto(values([])));\n  if (NativeIteratorPrototype &&\n      NativeIteratorPrototype !== Op &&\n      hasOwn.call(NativeIteratorPrototype, iteratorSymbol)) {\n    // This environment has a native %IteratorPrototype%; use it instead\n    // of the polyfill.\n    IteratorPrototype = NativeIteratorPrototype;\n  }\n\n  var Gp = GeneratorFunctionPrototype.prototype =\n    Generator.prototype = Object.create(IteratorPrototype);\n  GeneratorFunction.prototype = Gp.constructor = GeneratorFunctionPrototype;\n  GeneratorFunctionPrototype.constructor = GeneratorFunction;\n  GeneratorFunctionPrototype[toStringTagSymbol] =\n    GeneratorFunction.displayName = \"GeneratorFunction\";\n\n  // Helper for defining the .next, .throw, and .return methods of the\n  // Iterator interface in terms of a single ._invoke method.\n  function defineIteratorMethods(prototype) {\n    [\"next\", \"throw\", \"return\"].forEach(function(method) {\n      prototype[method] = function(arg) {\n        return this._invoke(method, arg);\n      };\n    });\n  }\n\n  runtime.isGeneratorFunction = function(genFun) {\n    var ctor = typeof genFun === \"function\" && genFun.constructor;\n    return ctor\n      ? ctor === GeneratorFunction ||\n        // For the native GeneratorFunction constructor, the best we can\n        // do is to check its .name property.\n        (ctor.displayName || ctor.name) === \"GeneratorFunction\"\n      : false;\n  };\n\n  runtime.mark = function(genFun) {\n    if (Object.setPrototypeOf) {\n      Object.setPrototypeOf(genFun, GeneratorFunctionPrototype);\n    } else {\n      genFun.__proto__ = GeneratorFunctionPrototype;\n      if (!(toStringTagSymbol in genFun)) {\n        genFun[toStringTagSymbol] = \"GeneratorFunction\";\n      }\n    }\n    genFun.prototype = Object.create(Gp);\n    return genFun;\n  };\n\n  // Within the body of any async function, `await x` is transformed to\n  // `yield regeneratorRuntime.awrap(x)`, so that the runtime can test\n  // `hasOwn.call(value, \"__await\")` to determine if the yielded value is\n  // meant to be awaited.\n  runtime.awrap = function(arg) {\n    return { __await: arg };\n  };\n\n  function AsyncIterator(generator) {\n    function invoke(method, arg, resolve, reject) {\n      var record = tryCatch(generator[method], generator, arg);\n      if (record.type === \"throw\") {\n        reject(record.arg);\n      } else {\n        var result = record.arg;\n        var value = result.value;\n        if (value &&\n            typeof value === \"object\" &&\n            hasOwn.call(value, \"__await\")) {\n          return Promise.resolve(value.__await).then(function(value) {\n            invoke(\"next\", value, resolve, reject);\n          }, function(err) {\n            invoke(\"throw\", err, resolve, reject);\n          });\n        }\n\n        return Promise.resolve(value).then(function(unwrapped) {\n          // When a yielded Promise is resolved, its final value becomes\n          // the .value of the Promise<{value,done}> result for the\n          // current iteration. If the Promise is rejected, however, the\n          // result for this iteration will be rejected with the same\n          // reason. Note that rejections of yielded Promises are not\n          // thrown back into the generator function, as is the case\n          // when an awaited Promise is rejected. This difference in\n          // behavior between yield and await is important, because it\n          // allows the consumer to decide what to do with the yielded\n          // rejection (swallow it and continue, manually .throw it back\n          // into the generator, abandon iteration, whatever). With\n          // await, by contrast, there is no opportunity to examine the\n          // rejection reason outside the generator function, so the\n          // only option is to throw it from the await expression, and\n          // let the generator function handle the exception.\n          result.value = unwrapped;\n          resolve(result);\n        }, reject);\n      }\n    }\n\n    if (typeof process === \"object\" && process.domain) {\n      invoke = process.domain.bind(invoke);\n    }\n\n    var previousPromise;\n\n    function enqueue(method, arg) {\n      function callInvokeWithMethodAndArg() {\n        return new Promise(function(resolve, reject) {\n          invoke(method, arg, resolve, reject);\n        });\n      }\n\n      return previousPromise =\n        // If enqueue has been called before, then we want to wait until\n        // all previous Promises have been resolved before calling invoke,\n        // so that results are always delivered in the correct order. If\n        // enqueue has not been called before, then it is important to\n        // call invoke immediately, without waiting on a callback to fire,\n        // so that the async generator function has the opportunity to do\n        // any necessary setup in a predictable way. This predictability\n        // is why the Promise constructor synchronously invokes its\n        // executor callback, and why async functions synchronously\n        // execute code before the first await. Since we implement simple\n        // async functions in terms of async generators, it is especially\n        // important to get this right, even though it requires care.\n        previousPromise ? previousPromise.then(\n          callInvokeWithMethodAndArg,\n          // Avoid propagating failures to Promises returned by later\n          // invocations of the iterator.\n          callInvokeWithMethodAndArg\n        ) : callInvokeWithMethodAndArg();\n    }\n\n    // Define the unified helper method that is used to implement .next,\n    // .throw, and .return (see defineIteratorMethods).\n    this._invoke = enqueue;\n  }\n\n  defineIteratorMethods(AsyncIterator.prototype);\n  runtime.AsyncIterator = AsyncIterator;\n\n  // Note that simple async functions are implemented on top of\n  // AsyncIterator objects; they just return a Promise for the value of\n  // the final result produced by the iterator.\n  runtime.async = function(innerFn, outerFn, self, tryLocsList) {\n    var iter = new AsyncIterator(\n      wrap(innerFn, outerFn, self, tryLocsList)\n    );\n\n    return runtime.isGeneratorFunction(outerFn)\n      ? iter // If outerFn is a generator, return the full iterator.\n      : iter.next().then(function(result) {\n          return result.done ? result.value : iter.next();\n        });\n  };\n\n  function makeInvokeMethod(innerFn, self, context) {\n    var state = GenStateSuspendedStart;\n\n    return function invoke(method, arg) {\n      if (state === GenStateExecuting) {\n        throw new Error(\"Generator is already running\");\n      }\n\n      if (state === GenStateCompleted) {\n        if (method === \"throw\") {\n          throw arg;\n        }\n\n        // Be forgiving, per 25.3.3.3.3 of the spec:\n        // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-generatorresume\n        return doneResult();\n      }\n\n      while (true) {\n        var delegate = context.delegate;\n        if (delegate) {\n          if (method === \"return\" ||\n              (method === \"throw\" && delegate.iterator[method] === undefined)) {\n            // A return or throw (when the delegate iterator has no throw\n            // method) always terminates the yield* loop.\n            context.delegate = null;\n\n            // If the delegate iterator has a return method, give it a\n            // chance to clean up.\n            var returnMethod = delegate.iterator[\"return\"];\n            if (returnMethod) {\n              var record = tryCatch(returnMethod, delegate.iterator, arg);\n              if (record.type === \"throw\") {\n                // If the return method threw an exception, let that\n                // exception prevail over the original return or throw.\n                method = \"throw\";\n                arg = record.arg;\n                continue;\n              }\n            }\n\n            if (method === \"return\") {\n              // Continue with the outer return, now that the delegate\n              // iterator has been terminated.\n              continue;\n            }\n          }\n\n          var record = tryCatch(\n            delegate.iterator[method],\n            delegate.iterator,\n            arg\n          );\n\n          if (record.type === \"throw\") {\n            context.delegate = null;\n\n            // Like returning generator.throw(uncaught), but without the\n            // overhead of an extra function call.\n            method = \"throw\";\n            arg = record.arg;\n            continue;\n          }\n\n          // Delegate generator ran and handled its own exceptions so\n          // regardless of what the method was, we continue as if it is\n          // \"next\" with an undefined arg.\n          method = \"next\";\n          arg = undefined;\n\n          var info = record.arg;\n          if (info.done) {\n            context[delegate.resultName] = info.value;\n            context.next = delegate.nextLoc;\n          } else {\n            state = GenStateSuspendedYield;\n            return info;\n          }\n\n          context.delegate = null;\n        }\n\n        if (method === \"next\") {\n          // Setting context._sent for legacy support of Babel's\n          // function.sent implementation.\n          context.sent = context._sent = arg;\n\n        } else if (method === \"throw\") {\n          if (state === GenStateSuspendedStart) {\n            state = GenStateCompleted;\n            throw arg;\n          }\n\n          if (context.dispatchException(arg)) {\n            // If the dispatched exception was caught by a catch block,\n            // then let that catch block handle the exception normally.\n            method = \"next\";\n            arg = undefined;\n          }\n\n        } else if (method === \"return\") {\n          context.abrupt(\"return\", arg);\n        }\n\n        state = GenStateExecuting;\n\n        var record = tryCatch(innerFn, self, context);\n        if (record.type === \"normal\") {\n          // If an exception is thrown from innerFn, we leave state ===\n          // GenStateExecuting and loop back for another invocation.\n          state = context.done\n            ? GenStateCompleted\n            : GenStateSuspendedYield;\n\n          var info = {\n            value: record.arg,\n            done: context.done\n          };\n\n          if (record.arg === ContinueSentinel) {\n            if (context.delegate && method === \"next\") {\n              // Deliberately forget the last sent value so that we don't\n              // accidentally pass it on to the delegate.\n              arg = undefined;\n            }\n          } else {\n            return info;\n          }\n\n        } else if (record.type === \"throw\") {\n          state = GenStateCompleted;\n          // Dispatch the exception by looping back around to the\n          // context.dispatchException(arg) call above.\n          method = \"throw\";\n          arg = record.arg;\n        }\n      }\n    };\n  }\n\n  // Define Generator.prototype.{next,throw,return} in terms of the\n  // unified ._invoke helper method.\n  defineIteratorMethods(Gp);\n\n  Gp[toStringTagSymbol] = \"Generator\";\n\n  Gp.toString = function() {\n    return \"[object Generator]\";\n  };\n\n  function pushTryEntry(locs) {\n    var entry = { tryLoc: locs[0] };\n\n    if (1 in locs) {\n      entry.catchLoc = locs[1];\n    }\n\n    if (2 in locs) {\n      entry.finallyLoc = locs[2];\n      entry.afterLoc = locs[3];\n    }\n\n    this.tryEntries.push(entry);\n  }\n\n  function resetTryEntry(entry) {\n    var record = entry.completion || {};\n    record.type = \"normal\";\n    delete record.arg;\n    entry.completion = record;\n  }\n\n  function Context(tryLocsList) {\n    // The root entry object (effectively a try statement without a catch\n    // or a finally block) gives us a place to store values thrown from\n    // locations where there is no enclosing try statement.\n    this.tryEntries = [{ tryLoc: \"root\" }];\n    tryLocsList.forEach(pushTryEntry, this);\n    this.reset(true);\n  }\n\n  runtime.keys = function(object) {\n    var keys = [];\n    for (var key in object) {\n      keys.push(key);\n    }\n    keys.reverse();\n\n    // Rather than returning an object with a next method, we keep\n    // things simple and return the next function itself.\n    return function next() {\n      while (keys.length) {\n        var key = keys.pop();\n        if (key in object) {\n          next.value = key;\n          next.done = false;\n          return next;\n        }\n      }\n\n      // To avoid creating an additional object, we just hang the .value\n      // and .done properties off the next function object itself. This\n      // also ensures that the minifier will not anonymize the function.\n      next.done = true;\n      return next;\n    };\n  };\n\n  function values(iterable) {\n    if (iterable) {\n      var iteratorMethod = iterable[iteratorSymbol];\n      if (iteratorMethod) {\n        return iteratorMethod.call(iterable);\n      }\n\n      if (typeof iterable.next === \"function\") {\n        return iterable;\n      }\n\n      if (!isNaN(iterable.length)) {\n        var i = -1, next = function next() {\n          while (++i < iterable.length) {\n            if (hasOwn.call(iterable, i)) {\n              next.value = iterable[i];\n              next.done = false;\n              return next;\n            }\n          }\n\n          next.value = undefined;\n          next.done = true;\n\n          return next;\n        };\n\n        return next.next = next;\n      }\n    }\n\n    // Return an iterator with no values.\n    return { next: doneResult };\n  }\n  runtime.values = values;\n\n  function doneResult() {\n    return { value: undefined, done: true };\n  }\n\n  Context.prototype = {\n    constructor: Context,\n\n    reset: function(skipTempReset) {\n      this.prev = 0;\n      this.next = 0;\n      // Resetting context._sent for legacy support of Babel's\n      // function.sent implementation.\n      this.sent = this._sent = undefined;\n      this.done = false;\n      this.delegate = null;\n\n      this.tryEntries.forEach(resetTryEntry);\n\n      if (!skipTempReset) {\n        for (var name in this) {\n          // Not sure about the optimal order of these conditions:\n          if (name.charAt(0) === \"t\" &&\n              hasOwn.call(this, name) &&\n              !isNaN(+name.slice(1))) {\n            this[name] = undefined;\n          }\n        }\n      }\n    },\n\n    stop: function() {\n      this.done = true;\n\n      var rootEntry = this.tryEntries[0];\n      var rootRecord = rootEntry.completion;\n      if (rootRecord.type === \"throw\") {\n        throw rootRecord.arg;\n      }\n\n      return this.rval;\n    },\n\n    dispatchException: function(exception) {\n      if (this.done) {\n        throw exception;\n      }\n\n      var context = this;\n      function handle(loc, caught) {\n        record.type = \"throw\";\n        record.arg = exception;\n        context.next = loc;\n        return !!caught;\n      }\n\n      for (var i = this.tryEntries.length - 1; i >= 0; --i) {\n        var entry = this.tryEntries[i];\n        var record = entry.completion;\n\n        if (entry.tryLoc === \"root\") {\n          // Exception thrown outside of any try block that could handle\n          // it, so set the completion value of the entire function to\n          // throw the exception.\n          return handle(\"end\");\n        }\n\n        if (entry.tryLoc <= this.prev) {\n          var hasCatch = hasOwn.call(entry, \"catchLoc\");\n          var hasFinally = hasOwn.call(entry, \"finallyLoc\");\n\n          if (hasCatch && hasFinally) {\n            if (this.prev < entry.catchLoc) {\n              return handle(entry.catchLoc, true);\n            } else if (this.prev < entry.finallyLoc) {\n              return handle(entry.finallyLoc);\n            }\n\n          } else if (hasCatch) {\n            if (this.prev < entry.catchLoc) {\n              return handle(entry.catchLoc, true);\n            }\n\n          } else if (hasFinally) {\n            if (this.prev < entry.finallyLoc) {\n              return handle(entry.finallyLoc);\n            }\n\n          } else {\n            throw new Error(\"try statement without catch or finally\");\n          }\n        }\n      }\n    },\n\n    abrupt: function(type, arg) {\n      for (var i = this.tryEntries.length - 1; i >= 0; --i) {\n        var entry = this.tryEntries[i];\n        if (entry.tryLoc <= this.prev &&\n            hasOwn.call(entry, \"finallyLoc\") &&\n            this.prev < entry.finallyLoc) {\n          var finallyEntry = entry;\n          break;\n        }\n      }\n\n      if (finallyEntry &&\n          (type === \"break\" ||\n           type === \"continue\") &&\n          finallyEntry.tryLoc <= arg &&\n          arg <= finallyEntry.finallyLoc) {\n        // Ignore the finally entry if control is not jumping to a\n        // location outside the try/catch block.\n        finallyEntry = null;\n      }\n\n      var record = finallyEntry ? finallyEntry.completion : {};\n      record.type = type;\n      record.arg = arg;\n\n      if (finallyEntry) {\n        this.next = finallyEntry.finallyLoc;\n      } else {\n        this.complete(record);\n      }\n\n      return ContinueSentinel;\n    },\n\n    complete: function(record, afterLoc) {\n      if (record.type === \"throw\") {\n        throw record.arg;\n      }\n\n      if (record.type === \"break\" ||\n          record.type === \"continue\") {\n        this.next = record.arg;\n      } else if (record.type === \"return\") {\n        this.rval = record.arg;\n        this.next = \"end\";\n      } else if (record.type === \"normal\" && afterLoc) {\n        this.next = afterLoc;\n      }\n    },\n\n    finish: function(finallyLoc) {\n      for (var i = this.tryEntries.length - 1; i >= 0; --i) {\n        var entry = this.tryEntries[i];\n        if (entry.finallyLoc === finallyLoc) {\n          this.complete(entry.completion, entry.afterLoc);\n          resetTryEntry(entry);\n          return ContinueSentinel;\n        }\n      }\n    },\n\n    \"catch\": function(tryLoc) {\n      for (var i = this.tryEntries.length - 1; i >= 0; --i) {\n        var entry = this.tryEntries[i];\n        if (entry.tryLoc === tryLoc) {\n          var record = entry.completion;\n          if (record.type === \"throw\") {\n            var thrown = record.arg;\n            resetTryEntry(entry);\n          }\n          return thrown;\n        }\n      }\n\n      // The context.catch method must only be called with a location\n      // argument that corresponds to a known catch block.\n      throw new Error(\"illegal catch attempt\");\n    },\n\n    delegateYield: function(iterable, resultName, nextLoc) {\n      this.delegate = {\n        iterator: values(iterable),\n        resultName: resultName,\n        nextLoc: nextLoc\n      };\n\n      return ContinueSentinel;\n    }\n  };\n})(\n  // Among the various tricks for obtaining a reference to the global\n  // object, this seems to be the most reliable technique that does not\n  // use indirect eval (which violates Content Security Policy).\n  typeof global === \"object\" ? global :\n  typeof window === \"object\" ? window :\n  typeof self === \"object\" ? self : this\n);\n\n\n\n// WEBPACK FOOTER //\n// ./~/regenerator-runtime/runtime.js","// shim for using process in browser\nvar process = module.exports = {};\n\n// cached from whatever global is present so that test runners that stub it\n// don't break things.  But we need to wrap it in a try catch in case it is\n// wrapped in strict mode code which doesn't define any globals.  It's inside a\n// function because try/catches deoptimize in certain engines.\n\nvar cachedSetTimeout;\nvar cachedClearTimeout;\n\nfunction defaultSetTimout() {\n    throw new Error('setTimeout has not been defined');\n}\nfunction defaultClearTimeout () {\n    throw new Error('clearTimeout has not been defined');\n}\n(function () {\n    try {\n        if (typeof setTimeout === 'function') {\n            cachedSetTimeout = setTimeout;\n        } else {\n            cachedSetTimeout = defaultSetTimout;\n        }\n    } catch (e) {\n        cachedSetTimeout = defaultSetTimout;\n    }\n    try {\n        if (typeof clearTimeout === 'function') {\n            cachedClearTimeout = clearTimeout;\n        } else {\n            cachedClearTimeout = defaultClearTimeout;\n        }\n    } catch (e) {\n        cachedClearTimeout = defaultClearTimeout;\n    }\n} ())\nfunction runTimeout(fun) {\n    if (cachedSetTimeout === setTimeout) {\n        //normal enviroments in sane situations\n        return setTimeout(fun, 0);\n    }\n    // if setTimeout wasn't available but was latter defined\n    if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {\n        cachedSetTimeout = setTimeout;\n        return setTimeout(fun, 0);\n    }\n    try {\n        // when when somebody has screwed with setTimeout but no I.E. maddness\n        return cachedSetTimeout(fun, 0);\n    } catch(e){\n        try {\n            // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally\n            return cachedSetTimeout.call(null, fun, 0);\n        } catch(e){\n            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error\n            return cachedSetTimeout.call(this, fun, 0);\n        }\n    }\n\n\n}\nfunction runClearTimeout(marker) {\n    if (cachedClearTimeout === clearTimeout) {\n        //normal enviroments in sane situations\n        return clearTimeout(marker);\n    }\n    // if clearTimeout wasn't available but was latter defined\n    if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {\n        cachedClearTimeout = clearTimeout;\n        return clearTimeout(marker);\n    }\n    try {\n        // when when somebody has screwed with setTimeout but no I.E. maddness\n        return cachedClearTimeout(marker);\n    } catch (e){\n        try {\n            // When we are in I.E. but the script has been evaled so I.E. doesn't  trust the global object when called normally\n            return cachedClearTimeout.call(null, marker);\n        } catch (e){\n            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.\n            // Some versions of I.E. have different rules for clearTimeout vs setTimeout\n            return cachedClearTimeout.call(this, marker);\n        }\n    }\n\n\n\n}\nvar queue = [];\nvar draining = false;\nvar currentQueue;\nvar queueIndex = -1;\n\nfunction cleanUpNextTick() {\n    if (!draining || !currentQueue) {\n        return;\n    }\n    draining = false;\n    if (currentQueue.length) {\n        queue = currentQueue.concat(queue);\n    } else {\n        queueIndex = -1;\n    }\n    if (queue.length) {\n        drainQueue();\n    }\n}\n\nfunction drainQueue() {\n    if (draining) {\n        return;\n    }\n    var timeout = runTimeout(cleanUpNextTick);\n    draining = true;\n\n    var len = queue.length;\n    while(len) {\n        currentQueue = queue;\n        queue = [];\n        while (++queueIndex < len) {\n            if (currentQueue) {\n                currentQueue[queueIndex].run();\n            }\n        }\n        queueIndex = -1;\n        len = queue.length;\n    }\n    currentQueue = null;\n    draining = false;\n    runClearTimeout(timeout);\n}\n\nprocess.nextTick = function (fun) {\n    var args = new Array(arguments.length - 1);\n    if (arguments.length > 1) {\n        for (var i = 1; i < arguments.length; i++) {\n            args[i - 1] = arguments[i];\n        }\n    }\n    queue.push(new Item(fun, args));\n    if (queue.length === 1 && !draining) {\n        runTimeout(drainQueue);\n    }\n};\n\n// v8 likes predictible objects\nfunction Item(fun, array) {\n    this.fun = fun;\n    this.array = array;\n}\nItem.prototype.run = function () {\n    this.fun.apply(null, this.array);\n};\nprocess.title = 'browser';\nprocess.browser = true;\nprocess.env = {};\nprocess.argv = [];\nprocess.version = ''; // empty string to avoid regexp issues\nprocess.versions = {};\n\nfunction noop() {}\n\nprocess.on = noop;\nprocess.addListener = noop;\nprocess.once = noop;\nprocess.off = noop;\nprocess.removeListener = noop;\nprocess.removeAllListeners = noop;\nprocess.emit = noop;\n\nprocess.binding = function (name) {\n    throw new Error('process.binding is not supported');\n};\n\nprocess.cwd = function () { return '/' };\nprocess.chdir = function (dir) {\n    throw new Error('process.chdir is not supported');\n};\nprocess.umask = function() { return 0; };\n\n\n\n// WEBPACK FOOTER //\n// ./~/process/browser.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module autoformat/autoformat\n */\n\nimport BlockAutoformatEngine from './blockautoformatengine';\nimport InlineAutoformatEngine from './inlineautoformatengine';\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport HeadingEngine from '@ckeditor/ckeditor5-heading/src/headingengine';\nimport ListEngine from '@ckeditor/ckeditor5-list/src/listengine';\nimport BoldEngine from '@ckeditor/ckeditor5-basic-styles/src/boldengine';\nimport ItalicEngine from '@ckeditor/ckeditor5-basic-styles/src/italicengine';\n\n/**\n * Includes a set of predefined autoformatting actions.\n *\n * ## Bulleted list\n *\n * You can create a bulleted list by staring a line with:\n *\n * * `* `\n * * `- `\n *\n * ## Numbered list\n *\n * You can create a numbered list by staring a line with:\n *\n * * `1. `\n * * `1) `\n *\n * ## Headings\n *\n * You can create a heading by starting a line with:\n *\n * `# ` – will create Heading 1,\n * `## ` – will create Heading 2,\n * `### ` – will create Heading 3.\n *\n * ## Bold and italic\n *\n * You can apply bold or italic to a text by typing Markdown formatting:\n *\n * * `**foo bar**` or `__foo bar__` – will bold the text,\n * * `*foo bar*` or `_foo bar_` – will italicize the text,\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class Autoformat extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get requires() {\n\t\treturn [ HeadingEngine, ListEngine, BoldEngine, ItalicEngine ];\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tthis._addListAutoformats();\n\t\tthis._addHeadingAutoformats();\n\t\tthis._addInlineAutoformats();\n\t}\n\n\t/**\n\t * Adds autoformatting related to ListEngine commands.\n\t *\n\t * When typed:\n\t * - `* ` or `- ` - paragraph will be changed to a bulleted list,\n\t * - `1. ` or `1) ` - paragraph will be changed to a numbered list (1 can be any digit or list of digits).\n\t *\n\t * @private\n\t */\n\t_addListAutoformats() {\n\t\tnew BlockAutoformatEngine( this.editor, /^[\\*\\-]\\s$/, 'bulletedList' );\n\t\tnew BlockAutoformatEngine( this.editor, /^\\d+[\\.|)]?\\s$/, 'numberedList' );\n\t}\n\n\t/**\n\t * Adds autoformatting related to HeadingEngine commands.\n\t * When typed `# ` or `## ` or `### ` paragraph will be changed to a corresponding heading level.\n\t *\n\t * @private\n\t */\n\t_addHeadingAutoformats() {\n\t\tnew BlockAutoformatEngine( this.editor, /^(#{1,3})\\s$/, ( context ) => {\n\t\t\tconst { batch, match } = context;\n\t\t\tconst headingLevel = match[ 1 ].length;\n\n\t\t\tthis.editor.execute( 'heading', {\n\t\t\t\tbatch,\n\t\t\t\tid: `heading${ headingLevel }`\n\t\t\t} );\n\t\t} );\n\t}\n\n\t/**\n\t * Adds inline autoformatting capabilities to the editor.\n\t *\n\t * When typed:\n\t * - `**foobar**`: `**` characters are removed, and `foobar` is set to bold,\n\t * - `__foobar__`: `__` characters are removed, and `foobar` is set to bold,\n\t * - `*foobar*`: `*` characters are removed, and `foobar` is set to italic,\n\t * - `_foobar_`: `_` characters are removed, and `foobar` is set to italic.\n\t *\n\t * @private\n\t */\n\t_addInlineAutoformats() {\n\t\tnew InlineAutoformatEngine( this.editor, /(\\*\\*)([^\\*]+)(\\*\\*)$/g, 'bold' );\n\t\tnew InlineAutoformatEngine( this.editor, /(__)([^_]+)(__)$/g, 'bold' );\n\n\t\t// The italic autoformatter cannot be triggered by the bold markers, so we need to check the\n\t\t// text before the pattern (e.g. `(?:^|[^\\*])`).\n\t\tnew InlineAutoformatEngine( this.editor, /(?:^|[^\\*])(\\*)([^\\*_]+)(\\*)$/g, 'italic' );\n\t\tnew InlineAutoformatEngine( this.editor, /(?:^|[^_])(_)([^_]+)(_)$/g, 'italic' );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-autoformat/src/autoformat.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module autoformat/blockautoformatengine\n */\n\nimport Range from '@ckeditor/ckeditor5-engine/src/model/range';\nimport TextProxy from '@ckeditor/ckeditor5-engine/src/model/textproxy';\n\n/**\n * The block autoformatting engine. Allows to format various block patterns. For example,\n * it can be configured to make a paragraph starting with \"* \" a list item.\n *\n * The autoformatting operation is integrated with the undo manager,\n * so the autoformatting step can be undone, if the user's intention wasn't to format the text.\n *\n * See the constructors documentation to learn how to create custom inline autoformatters. You can also use\n * the {@link module:autoformat/autoformat~Autoformat} feature which enables a set of default autoformatters\n * (lists, headings, bold and italic).\n */\nexport default class BlockAutoformatEngine {\n\t/**\n\t * Creates listener triggered on `change` event in document.\n\t * Calls callback when inserted text matches regular expression or command name\n\t * if provided instead of callback.\n\t *\n\t * Examples of usage:\n\t *\n\t * To convert paragraph to heading1 when `- ` is typed, using just commmand name:\n\t *\n\t *\t\tnew BlockAutoformatEngine( editor, /^\\- $/, 'heading1' );\n\t *\n\t * To convert paragraph to heading1 when `- ` is typed, using just callback:\n\t *\n\t *\t\tnew BlockAutoformatEngine( editor, /^\\- $/, ( context ) => {\n\t *\t\t\tconst { batch, match } = context;\n\t *\t\t\tconst headingLevel = match[ 1 ].length;\n\t *\n\t *\t\t\teditor.execute( 'heading', {\n\t *\t\t\t\tbatch,\n\t *\t\t\t\tformatId: `heading${ headingLevel }`\n\t *\t\t\t} );\n\t * \t\t} );\n\t *\n\t * @param {module:core/editor/editor~Editor} editor Editor instance.\n\t * @param {RegExp} pattern Regular expression to exec on just inserted text.\n\t * @param {Function|String} callbackOrCommand Callback to execute or command to run when text is matched.\n\t * In case of providing callback it receives following parameters:\n\t * * {module:engine/model/batch~Batch} batch Newly created batch for autoformat changes.\n\t * * {Object} match RegExp.exec() result of matching pattern to inserted text.\n\t */\n\tconstructor( editor, pattern, callbackOrCommand ) {\n\t\tlet callback;\n\n\t\tif ( typeof callbackOrCommand == 'function' ) {\n\t\t\tcallback = callbackOrCommand;\n\t\t} else {\n\t\t\t// We assume that the actual command name was provided.\n\t\t\tconst command = callbackOrCommand;\n\n\t\t\tcallback = ( context ) => {\n\t\t\t\tconst { batch } = context;\n\n\t\t\t\t// Create new batch for removal and command execution.\n\t\t\t\teditor.execute( command, { batch } );\n\t\t\t};\n\t\t}\n\n\t\teditor.document.on( 'change', ( event, type, changes ) => {\n\t\t\tif ( type != 'insert' ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// Take the first element. Typing shouldn't add more than one element at once.\n\t\t\t// And if it is not typing (e.g. paste), Autoformat should not be fired.\n\t\t\tconst value = changes.range.getItems().next().value;\n\n\t\t\tif ( !( value instanceof TextProxy ) ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tconst textNode = value.textNode;\n\t\t\tconst text = textNode.data;\n\n\t\t\t// Run matching only on non-empty paragraphs.\n\t\t\tif ( textNode.parent.name !== 'paragraph' || !text ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tconst match = pattern.exec( text );\n\n\t\t\tif ( !match ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\teditor.document.enqueueChanges( () => {\n\t\t\t\t// Create new batch to separate typing batch from the Autoformat changes.\n\t\t\t\tconst batch = editor.document.batch();\n\n\t\t\t\t// Matched range.\n\t\t\t\tconst range = Range.createFromParentsAndOffsets( textNode.parent, 0, textNode.parent, match[ 0 ].length );\n\n\t\t\t\t// Remove matched text.\n\t\t\t\tbatch.remove( range );\n\n\t\t\t\tcallback( { batch, match } );\n\t\t\t} );\n\t\t} );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-autoformat/src/blockautoformatengine.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module autoformat/inlineautoformatengine\n */\n\nimport LiveRange from '@ckeditor/ckeditor5-engine/src/model/liverange';\nimport getSchemaValidRanges from '@ckeditor/ckeditor5-core/src/command/helpers/getschemavalidranges';\n\n/**\n * The inline autoformatting engine. Allows to format various inline patterns. For example,\n * it can be configured to make \"foo\" bold when typed `**foo**` (the `**` markers will be removed).\n *\n * The autoformatting operation is integrated with the undo manager,\n * so the autoformatting step can be undone, if the user's intention wasn't to format the text.\n *\n * See the constructors documentation to learn how to create custom inline autoformatters. You can also use\n * the {@link module:autoformat/autoformat~Autoformat} feature which enables a set of default autoformatters\n * (lists, headings, bold and italic).\n */\nexport default class InlineAutoformatEngine {\n\t/**\n\t * Enables autoformatting mechanism on a given {@link module:core/editor/editor~Editor}.\n\t *\n\t * It formats the matched text by applying given model attribute or by running the provided formatting callback.\n\t * Each time data model changes text from given node (from the beginning of the current node to the collapsed\n\t * selection location) will be tested.\n\t *\n\t * @param {module:core/editor/editor~Editor} editor Editor instance.\n\t * @param {Function|RegExp} testRegexpOrCallback RegExp or callback to execute on text.\n\t * Provided RegExp *must* have three capture groups. First and third capture groups\n\t * should match opening/closing delimiters. Second capture group should match text to format.\n\t *\n\t *\t\t// Matches `**bold text**` pattern.\n\t *\t\t// There are three capturing groups:\n\t *\t\t// - first to match starting `**` delimiter,\n\t *\t\t// - second to match text to format,\n\t *\t\t// - third to match ending `**` delimiter.\n\t *\t\tnew InlineAutoformatEngine( this.editor, /(\\*\\*)([^\\*]+?)(\\*\\*)$/g, 'bold' );\n\t *\n\t * When function is provided instead of RegExp, it will be executed with text to match as a parameter. Function\n\t * should return proper \"ranges\" to delete and format.\n\t *\n\t *\t\t{\n\t *\t\t\tremove: [\n\t *\t\t\t\t[ 0, 1 ],\t// Remove first letter from the given text.\n\t *\t\t\t\t[ 5, 6 ]\t// Remove 6th letter from the given text.\n\t *\t\t\t],\n\t *\t\t\tformat: [\n\t *\t\t\t\t[ 1, 5 ]\t// Format all letters from 2nd to 5th.\n\t *\t\t\t]\n\t *\t\t}\n\t *\n\t * @param {Function|String} attributeOrCallback Name of attribute to apply on matching text or callback for manual\n\t * formatting.\n\t *\n\t *\t\t// Use attribute name:\n\t *\t\tnew InlineAutoformatEngine( this.editor, /(\\*\\*)([^\\*]+?)(\\*\\*)$/g, 'bold' );\n\t *\n\t *\t\t// Use formatting callback:\n\t *\t\tnew InlineAutoformatEngine( this.editor, /(\\*\\*)([^\\*]+?)(\\*\\*)$/g, ( batch, validRanges ) => {\n\t *\t\t\tfor ( let range of validRanges ) {\n\t *\t\t\t\tbatch.setAttribute( range, command, true );\n\t *\t\t\t}\n\t *\t\t} );\n\t */\n\tconstructor( editor, testRegexpOrCallback, attributeOrCallback ) {\n\t\tthis.editor = editor;\n\n\t\tlet regExp;\n\t\tlet command;\n\t\tlet testCallback;\n\t\tlet formatCallback;\n\n\t\tif ( testRegexpOrCallback instanceof RegExp ) {\n\t\t\tregExp = testRegexpOrCallback;\n\t\t} else {\n\t\t\ttestCallback = testRegexpOrCallback;\n\t\t}\n\n\t\tif ( typeof attributeOrCallback == 'string' ) {\n\t\t\tcommand = attributeOrCallback;\n\t\t} else {\n\t\t\tformatCallback = attributeOrCallback;\n\t\t}\n\n\t\t// A test callback run on changed text.\n\t\ttestCallback = testCallback || ( ( text ) => {\n\t\t\tlet result;\n\t\t\tlet remove = [];\n\t\t\tlet format = [];\n\n\t\t\twhile ( ( result = regExp.exec( text ) ) !== null ) {\n\t\t\t\t// There should be full match and 3 capture groups.\n\t\t\t\tif ( result && result.length < 4 ) {\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\n\t\t\t\tlet {\n\t\t\t\t\tindex,\n\t\t\t\t\t'1': leftDel,\n\t\t\t\t\t'2': content,\n\t\t\t\t\t'3': rightDel\n\t\t\t\t} = result;\n\n\t\t\t\t// Real matched string - there might be some non-capturing groups so we need to recalculate starting index.\n\t\t\t\tconst found = leftDel + content + rightDel;\n\t\t\t\tindex += result[ 0 ].length - found.length;\n\n\t\t\t\t// Start and End offsets of delimiters to remove.\n\t\t\t\tconst delStart = [\n\t\t\t\t\tindex,\n\t\t\t\t\tindex + leftDel.length\n\t\t\t\t];\n\t\t\t\tconst delEnd = [\n\t\t\t\t\tindex + leftDel.length + content.length,\n\t\t\t\t\tindex + leftDel.length + content.length + rightDel.length\n\t\t\t\t];\n\n\t\t\t\tremove.push( delStart );\n\t\t\t\tremove.push( delEnd );\n\n\t\t\t\tformat.push( [ index + leftDel.length, index + leftDel.length + content.length ] );\n\t\t\t}\n\n\t\t\treturn {\n\t\t\t\tremove,\n\t\t\t\tformat\n\t\t\t};\n\t\t} );\n\n\t\t// A format callback run on matched text.\n\t\tformatCallback = formatCallback || ( ( batch, validRanges ) => {\n\t\t\tfor ( let range of validRanges ) {\n\t\t\t\tbatch.setAttribute( range, command, true );\n\t\t\t}\n\t\t} );\n\n\t\teditor.document.on( 'change', ( evt, type ) => {\n\t\t\tif ( type !== 'insert' ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tconst selection = this.editor.document.selection;\n\n\t\t\tif ( !selection.isCollapsed || !selection.focus || !selection.focus.parent ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tconst block = selection.focus.parent;\n\t\t\tconst text = getText( block ).slice( 0, selection.focus.offset );\n\t\t\tconst ranges = testCallback( text );\n\t\t\tconst rangesToFormat = [];\n\n\t\t\t// Apply format before deleting text.\n\t\t\tranges.format.forEach( ( range ) => {\n\t\t\t\tif ( range[ 0 ] === undefined || range[ 1 ] === undefined ) {\n\t\t\t\t\treturn;\n\t\t\t\t}\n\n\t\t\t\trangesToFormat.push( LiveRange.createFromParentsAndOffsets(\n\t\t\t\t\tblock, range[ 0 ],\n\t\t\t\t\tblock, range[ 1 ]\n\t\t\t\t) );\n\t\t\t} );\n\n\t\t\tconst rangesToRemove = [];\n\n\t\t\t// Reverse order to not mix the offsets while removing.\n\t\t\tranges.remove.slice().reverse().forEach( ( range ) => {\n\t\t\t\tif ( range[ 0 ] === undefined || range[ 1 ] === undefined ) {\n\t\t\t\t\treturn;\n\t\t\t\t}\n\n\t\t\t\trangesToRemove.push( LiveRange.createFromParentsAndOffsets(\n\t\t\t\t\tblock, range[ 0 ],\n\t\t\t\t\tblock, range[ 1 ]\n\t\t\t\t) );\n\t\t\t} );\n\n\t\t\tif ( !( rangesToFormat.length && rangesToRemove.length ) ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tconst batch = editor.document.batch();\n\n\t\t\teditor.document.enqueueChanges( () => {\n\t\t\t\tconst validRanges = getSchemaValidRanges( command, rangesToFormat, editor.document.schema );\n\n\t\t\t\t// Apply format.\n\t\t\t\tformatCallback( batch, validRanges );\n\n\t\t\t\t// Remove delimiters.\n\t\t\t\tfor ( let range of rangesToRemove ) {\n\t\t\t\t\tbatch.remove( range );\n\t\t\t\t}\n\t\t\t} );\n\t\t} );\n\t}\n}\n\n// Returns whole text from parent element by adding all data from text nodes together.\n//\n// @private\n// @param {module:engine/model/element~Element} element\n// @returns {String}\nfunction getText( element ) {\n\treturn Array.from( element.getChildren() ).reduce( ( a, b ) => a + b.data, '' );\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-autoformat/src/inlineautoformatengine.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module basic-styles/bold\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport BoldEngine from './boldengine';\nimport ButtonView from '@ckeditor/ckeditor5-ui/src/button/buttonview';\nimport boldIcon from '../theme/icons/bold.svg';\n\n/**\n * The bold feature. It introduces the Bold button and the <kbd>Ctrl+B</kbd> keystroke.\n *\n * It uses the {@link module:basic-styles/boldengine~BoldEngine bold engine feature}.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class Bold extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get requires() {\n\t\treturn [ BoldEngine ];\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tconst editor = this.editor;\n\t\tconst t = editor.t;\n\t\tconst command = editor.commands.get( 'bold' );\n\t\tconst keystroke = 'CTRL+B';\n\n\t\t// Add bold button to feature components.\n\t\teditor.ui.componentFactory.add( 'bold', ( locale ) => {\n\t\t\tconst view = new ButtonView( locale );\n\n\t\t\tview.set( {\n\t\t\t\tlabel: t( 'Bold' ),\n\t\t\t\ticon: boldIcon,\n\t\t\t\tkeystroke,\n\t\t\t\ttooltip: true\n\t\t\t} );\n\n\t\t\tview.bind( 'isOn', 'isEnabled' ).to( command, 'value', 'isEnabled' );\n\n\t\t\t// Execute command.\n\t\t\tthis.listenTo( view, 'execute', () => editor.execute( 'bold' ) );\n\n\t\t\treturn view;\n\t\t} );\n\n\t\t// Set the Ctrl+B keystroke.\n\t\teditor.keystrokes.set( keystroke, 'bold' );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-basic-styles/src/bold.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module basic-styles/italic\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport ItalicEngine from './italicengine';\nimport ButtonView from '@ckeditor/ckeditor5-ui/src/button/buttonview';\nimport italicIcon from '../theme/icons/italic.svg';\n\n/**\n * The italic feature. It introduces the Italic button and the <kbd>Ctrl+I</kbd> keystroke.\n *\n * It uses the {@link module:basic-styles/italicengine~ItalicEngine italic engine feature}.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class Italic extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get requires() {\n\t\treturn [ ItalicEngine ];\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tconst editor = this.editor;\n\t\tconst t = editor.t;\n\t\tconst command = editor.commands.get( 'italic' );\n\t\tconst keystroke = 'CTRL+I';\n\n\t\t// Add bold button to feature components.\n\t\teditor.ui.componentFactory.add( 'italic', ( locale ) => {\n\t\t\tconst view = new ButtonView( locale );\n\n\t\t\tview.set( {\n\t\t\t\tlabel: t( 'Italic' ),\n\t\t\t\ticon: italicIcon,\n\t\t\t\tkeystroke,\n\t\t\t\ttooltip: true\n\t\t\t} );\n\n\t\t\tview.bind( 'isOn', 'isEnabled' ).to( command, 'value', 'isEnabled' );\n\n\t\t\t// Execute command.\n\t\t\tthis.listenTo( view, 'execute', () => editor.execute( 'italic' ) );\n\n\t\t\treturn view;\n\t\t} );\n\n\t\t// Set the Ctrl+I keystroke.\n\t\teditor.keystrokes.set( keystroke, 'italic' );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-basic-styles/src/italic.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module clipboard/clipboard\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\n\nimport ClipboardObserver from './clipboardobserver';\n\nimport plainTextToHtml from './utils/plaintexttohtml';\nimport normalizeClipboardHtml from './utils/normalizeclipboarddata';\n\nimport HtmlDataProcessor from '@ckeditor/ckeditor5-engine/src/dataprocessor/htmldataprocessor';\n\n/**\n * The clipboard feature. Currently, it's only responsible for intercepting the `paste` event and\n * passing the pasted content through the clipboard pipeline.\n *\n * ## Clipboard input pipeline\n *\n * The feature creates the clipboard input pipeline which allows processing clipboard content\n * before it gets inserted into the editor. The pipeline consists of two events on which\n * the features can listen in order to modify or totally override the default behavior.\n *\n * ### On {@link module:engine/view/document~Document#event:paste}\n *\n * The default action is to:\n *\n * 1. get HTML or plain text from the clipboard,\n * 2. prevent the default action of the native `paste` event,\n * 3. fire {@link module:engine/view/document~Document#event:clipboardInput} with the clipboard data parsed to\n * a {@link module:engine/view/documentfragment~DocumentFragment view document fragment}.\n *\n * This action is performed by a low priority listener, so it can be overridden by a normal one\n * when a deeper change in pasting behavior is needed. For example, a feature which wants to differently read\n * data from the clipboard (the {@link module:clipboard/datatransfer~DataTransfer `DataTransfer`}).\n * should plug a listener at this stage.\n *\n * ### On {@link module:engine/view/document~Document#event:clipboardInput}\n *\n * The default action is to insert the content (`data.content`, represented by a\n * {@link module:engine/view/documentfragment~DocumentFragment}) to an editor if the data is not empty.\n *\n * This action is performed by a low priority listener, so it can be overridden by a normal one.\n *\n * At this stage the pasted content can be processed by the features. E.g. a feature which wants to transform\n * a pasted text into a link can be implemented in this way:\n *\n *\t\tthis.listenTo( editor.editing.view, 'clipboardInput', ( evt, data ) => {\n *\t\t\tif ( data.content.childCount == 1 && isUrlText( data.content.getChild( 0 ) ) ) {\n *\t\t\t\tconst linkUrl = data.content.getChild( 0 ).data;\n *\n *\t\t\t\tdata.content = new ViewDocumentFragment( [\n *\t\t\t\t\tViewElement(\n *\t\t\t\t\t\t'a',\n *\t\t\t\t\t\t{ href: linkUrl },\n *\t\t\t\t\t\t[ new ViewText( linkUrl ) ]\n *\t\t\t\t\t)\n *\t\t\t\t] );\n *\t\t\t}\n *\t\t} );\n *\n * ## Clipboard output pipeline\n *\n * The output pipeline is the equivalent of the input pipeline but for the copy and cut operations.\n * It allows to process the content which will be then put into the clipboard or to override the whole process.\n *\n * ### On {@link module:engine/view/document~Document#event:copy} and {@link module:engine/view/document~Document#event:cut}\n *\n * The default action is to:\n *\n * 1. {@link module:engine/controller/datacontroller~DataController#getSelectedContent get selected content} from the editor,\n * 2. prevent the default action of the native `copy` or `cut` event,\n * 3. fire {@link module:engine/view/document~Document#event:clipboardOutput} with a clone of the selected content\n * converted to a {@link module:engine/view/documentfragment~DocumentFragment view document fragment}.\n *\n * ### On {@link module:engine/view/document~Document#event:clipboardOutput}\n *\n * The default action is to put the content (`data.content`, represented by a\n * {@link module:engine/view/documentfragment~DocumentFragment}) to the clipboard as HTML. In case of the cut operation,\n * the selected content is also deleted from the editor.\n *\n * This action is performed by a low priority listener, so it can be overridden by a normal one.\n *\n * At this stage the copied/cut content can be processed by the features.\n *\n * @extends module:core.plugin~Plugin\n */\nexport default class Clipboard extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tconst editor = this.editor;\n\t\tconst doc = editor.document;\n\t\tconst editingView = editor.editing.view;\n\n\t\t/**\n\t\t * Data processor used to convert pasted HTML to a view structure.\n\t\t *\n\t\t * @private\n\t\t * @member {module:engine/dataprocessor/htmldataprocessor~HtmlDataProcessor} #_htmlDataProcessor\n\t\t */\n\t\tthis._htmlDataProcessor = new HtmlDataProcessor();\n\n\t\teditingView.addObserver( ClipboardObserver );\n\n\t\t// The clipboard paste pipeline.\n\n\t\tthis.listenTo( editingView, 'paste', ( evt, data ) => {\n\t\t\tconst dataTransfer = data.dataTransfer;\n\t\t\tlet content = '';\n\n\t\t\tif ( dataTransfer.getData( 'text/html' ) ) {\n\t\t\t\tcontent = normalizeClipboardHtml( dataTransfer.getData( 'text/html' ) );\n\t\t\t} else if ( dataTransfer.getData( 'text/plain' ) ) {\n\t\t\t\tcontent = plainTextToHtml( dataTransfer.getData( 'text/plain' ) );\n\t\t\t}\n\n\t\t\tcontent = this._htmlDataProcessor.toView( content );\n\n\t\t\tdata.preventDefault();\n\n\t\t\teditingView.fire( 'clipboardInput', { dataTransfer, content } );\n\t\t}, { priority: 'low' } );\n\n\t\tthis.listenTo( editingView, 'clipboardInput', ( evt, data ) => {\n\t\t\tif ( !data.content.isEmpty ) {\n\t\t\t\tconst dataController = this.editor.data;\n\n\t\t\t\t// Convert the pasted content to a model document fragment.\n\t\t\t\t// Convertion is contextual, but in this case we need an \"all allowed\" context and for that\n\t\t\t\t// we use the $clipboardHolder item.\n\t\t\t\tconst modelFragment = dataController.viewToModel.convert( data.content, {\n\t\t\t\t\tcontext: [ '$clipboardHolder' ]\n\t\t\t\t} );\n\n\t\t\t\tdoc.enqueueChanges( () => {\n\t\t\t\t\tdataController.insertContent( modelFragment, doc.selection );\n\t\t\t\t} );\n\t\t\t}\n\t\t}, { priority: 'low' } );\n\n\t\t// The clipboard copy/cut pipeline.\n\n\t\tconst onCopyCut = ( evt, data ) => {\n\t\t\tconst dataTransfer = data.dataTransfer;\n\t\t\tconst content = editor.data.toView( editor.data.getSelectedContent( doc.selection ) );\n\n\t\t\tdata.preventDefault();\n\n\t\t\teditingView.fire( 'clipboardOutput', { dataTransfer, content, method: evt.name } );\n\t\t};\n\n\t\tthis.listenTo( editingView, 'copy', onCopyCut, { priority: 'low' } );\n\t\tthis.listenTo( editingView, 'cut', onCopyCut, { priority: 'low' } );\n\n\t\tthis.listenTo( editingView, 'clipboardOutput', ( evt, data ) => {\n\t\t\tif ( !data.content.isEmpty ) {\n\t\t\t\tdata.dataTransfer.setData( 'text/html', this._htmlDataProcessor.toData( data.content ) );\n\t\t\t}\n\n\t\t\tif ( data.method == 'cut' ) {\n\t\t\t\tdoc.enqueueChanges( () => {\n\t\t\t\t\teditor.data.deleteContent( doc.selection, doc.batch(), { merge: true } );\n\t\t\t\t} );\n\t\t\t}\n\t\t}, { priority: 'low' } );\n\t}\n}\n\n/**\n * Fired with a content which comes from the clipboard (was pasted or dropped) and\n * should be processed in order to be inserted into the editor.\n * It's part of the {@link module:clipboard/clipboard~Clipboard \"clipboard pipeline\"}.\n *\n * @see module:clipboard/clipboardobserver~ClipboardObserver\n * @see module:clipboard/clipboard~Clipboard\n * @event module:engine/view/document~Document#event:clipboardInput\n * @param {module:clipboard/clipboard~ClipboardInputEventData} data Event data.\n */\n\n/**\n * The value of the {@link module:engine/view/document~Document#event:clipboardInput} event.\n *\n * @class module:clipboard/clipboard~ClipboardInputEventData\n */\n\n/**\n * Data transfer instance.\n *\n * @readonly\n * @member {module:clipboard/datatransfer~DataTransfer} module:clipboard/clipboard~ClipboardInputEventData#dataTransfer\n */\n\n/**\n * Content to be inserted into the editor. It can be modified by the event listeners.\n * Read more about the clipboard pipelines in {@link module:clipboard/clipboard~Clipboard}.\n *\n * @member {module:engine/view/documentfragment~DocumentFragment} module:clipboard/clipboard~ClipboardInputEventData#content\n */\n\n/**\n * Fired on {@link module:engine/view/document~Document#event:copy} and {@link module:engine/view/document~Document#event:cut}\n * with a copy of selected content. The content can be processed before it ends up in the clipboard.\n * It's part of the {@link module:clipboard/clipboard~Clipboard \"clipboard pipeline\"}.\n *\n * @see module:clipboard/clipboardobserver~ClipboardObserver\n * @see module:clipboard/clipboard~Clipboard\n * @event module:engine/view/document~Document#event:clipboardOutput\n * @param {module:clipboard/clipboard/ClipboardOutputEventData} data Event data.\n */\n\n/**\n * The value of the {@link module:engine/view/document~Document#event:clipboardOutput} event.\n *\n * @class module:clipboard/clipboard/ClipboardOutputEventData\n */\n\n/**\n * Data transfer instance.\n *\n * @readonly\n * @member {module:clipboard/datatransfer~DataTransfer} module:clipboard/clipboard~ClipboardOutputEventData#dataTransfer\n */\n\n/**\n * Content to be put into the clipboard. It can be modified by the event listeners.\n * Read more about the clipboard pipelines in {@link module:clipboard/clipboard~Clipboard}.\n *\n * @member {module:engine/view/documentfragment~DocumentFragment} module:clipboard/clipboard~ClipboardOutputEventData#content\n */\n\n/**\n * Whether the event was triggered by copy or cut operation.\n *\n * @member {'copy'|'cut'} module:clipboard/clipboard~ClipboardOutputEventData#method\n */\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-clipboard/src/clipboard.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module clipboard/clipboardobserver\n */\n\nimport DomEventObserver from '@ckeditor/ckeditor5-engine/src/view/observer/domeventobserver';\nimport DataTransfer from './datatransfer';\n\n/**\n * {@link module:engine/view/document~Document#event:paste Paste} event observer.\n *\n * Note that this observer is not available by default. To make it available it needs to be added to\n * {@link module:engine/view/document~Document} by the {@link module:engine/view/document~Document#addObserver} method.\n *\n * @extends module:engine/view/observer/domeventobserver~DomEventObserver\n */\nexport default class ClipboardObserver extends DomEventObserver {\n\tconstructor( doc ) {\n\t\tsuper( doc );\n\n\t\tthis.domEventType = [ 'paste', 'copy', 'cut' ];\n\t}\n\n\tonDomEvent( domEvent ) {\n\t\tthis.fire( domEvent.type, domEvent, {\n\t\t\tdataTransfer: new DataTransfer( domEvent.clipboardData )\n\t\t} );\n\t}\n}\n\n/**\n * Fired when user pasted content into one of the editables.\n *\n * Introduced by {@link module:clipboard/clipboardobserver~ClipboardObserver}.\n *\n * Note that this event is not available by default. To make it available {@link module:clipboard/clipboardobserver~ClipboardObserver}\n * needs to be added to {@link module:engine/view/document~Document} by the {@link module:engine/view/document~Document#addObserver} method.\n * It's done by the {@link module:clipboard/clipboard~Clipboard} feature. If it's not loaded, it must be done manually.\n *\n * @see module:clipboard/clipboardobserver~ClipboardObserver\n * @event module:engine/view/document~Document#event:paste\n * @param {module:clipboard/clipboardobserver~ClipboardEventData} data Event data.\n */\n\n/**\n * Fired when user copied content from one of the editables.\n *\n * Introduced by {@link module:clipboard/clipboardobserver~ClipboardObserver}.\n *\n * Note that this event is not available by default. To make it available {@link module:clipboard/clipboardobserver~ClipboardObserver}\n * needs to be added to {@link module:engine/view/document~Document} by the {@link module:engine/view/document~Document#addObserver} method.\n * It's done by the {@link module:clipboard/clipboard~Clipboard} feature. If it's not loaded, it must be done manually.\n *\n * @see module:clipboard/clipboardobserver~ClipboardObserver\n * @event module:engine/view/document~Document#event:copy\n * @param {module:clipboard/clipboardobserver~ClipboardEventData} data Event data.\n */\n\n/**\n * Fired when user cut content from one of the editables.\n *\n * Introduced by {@link module:clipboard/clipboardobserver~ClipboardObserver}.\n *\n * Note that this event is not available by default. To make it available {@link module:clipboard/clipboardobserver~ClipboardObserver}\n * needs to be added to {@link module:engine/view/document~Document} by the {@link module:engine/view/document~Document#addObserver} method.\n * It's done by the {@link module:clipboard/clipboard~Clipboard} feature. If it's not loaded, it must be done manually.\n *\n * @see module:clipboard/clipboardobserver~ClipboardObserver\n * @event module:engine/view/document~Document#event:cut\n * @param {module:clipboard/clipboardobserver~ClipboardEventData} data Event data.\n */\n\n/**\n * The value of the {@link module:engine/view/document~Document#event:paste},\n * {@link module:engine/view/document~Document#event:copy} and {@link module:engine/view/document~Document#event:cut} events.\n *\n * In order to access clipboard data use `dataTransfer` property.\n *\n * @class module:clipboard/clipboardobserver~ClipboardEventData\n * @extends module:engine/view/observer/domeventdata~DomEventData\n */\n\n/**\n * Data transfer instance.\n *\n * @readonly\n * @member {module:clipboard/datatransfer~DataTransfer} module:clipboard/clipboardobserver~ClipboardEventData#dataTransfer\n */\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-clipboard/src/clipboardobserver.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module clipboard/datatransfer\n */\n\n/**\n * Facade over the native [`DataTransfer`](https://developer.mozilla.org/en-US/docs/Web/API/DataTransfer) object.\n */\nexport default class DataTransfer {\n\tconstructor( nativeDataTransfer ) {\n\t\t/**\n\t\t * The native DataTransfer object.\n\t\t *\n\t\t * @private\n\t\t * @member {DataTransfer} #_native\n\t\t */\n\t\tthis._native = nativeDataTransfer;\n\t}\n\n\t/**\n\t * Gets data from the data transfer by its mime type.\n\t *\n\t *\t\tdataTransfer.getData( 'text/plain' );\n\t *\n\t * @param {String} type The mime type. E.g. `text/html` or `text/plain`.\n\t * @returns {String}\n\t */\n\tgetData( type ) {\n\t\treturn this._native.getData( type );\n\t}\n\n\t/**\n\t * Sets data in the data transfer.\n\t *\n\t * @param {String} type The mime type. E.g. `text/html` or `text/plain`.\n\t * @param {String} data\n\t */\n\tsetData( type, data ) {\n\t\tthis._native.setData( type, data );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-clipboard/src/datatransfer.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module clipboard/utils/normalizeclipboarddata\n */\n\n/**\n * Removes some popular browser quirks out of the clipboard data (HTML).\n *\n * @param {String} data The HTML data to normalize.\n * @returns {String} Normalized HTML.\n */\nexport default function normalizeClipboardData( data ) {\n\treturn data\n\t\t.replace( /<span class=\"Apple-converted-space\">(\\s+)<\\/span>/g, ( fullMatch, spaces ) => {\n\t\t\t// Handle the most popular and problematic case when even a single space becomes an nbsp;.\n\t\t\t// Decode those to normal spaces. Read more in https://github.com/ckeditor/ckeditor5-clipboard/issues/2.\n\t\t\tif ( spaces.length == 1 ) {\n\t\t\t\treturn ' ';\n\t\t\t}\n\n\t\t\treturn spaces;\n\t\t} );\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-clipboard/src/utils/normalizeclipboarddata.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module clipboard/utils/plaintexttohtml\n */\n\n/**\n * Converts plain text to its HTML-ized version.\n *\n * @param {String} text The plain text to convert.\n * @returns {String} HTML generated from the plain text.\n */\nexport default function plainTextToHtml( text ) {\n\ttext = text\n\t\t// Encode <>.\n\t\t.replace( /</g, '&lt;' )\n\t\t.replace( />/g, '&gt;' )\n\t\t// Creates paragraphs for double line breaks and change single line breaks to spaces.\n\t\t// In the future single line breaks may be converted into <br>s.\n\t\t.replace( /\\n\\n/g, '</p><p>' )\n\t\t.replace( /\\n/g, ' ' )\n\t\t// Preserve trailing spaces (only the first and last one – the rest is handled below).\n\t\t.replace( /^\\s/, '&nbsp;' )\n\t\t.replace( /\\s$/, '&nbsp;' )\n\t\t// Preserve other subsequent spaces now.\n\t\t.replace( /\\s\\s/g, ' &nbsp;' );\n\n\tif ( text.indexOf( '</p><p>' ) > -1 ) {\n\t\t// If we created paragraphs above, add the trailing ones.\n\t\ttext = `<p>${ text }</p>`;\n\t}\n\n\t// TODO:\n\t// * What about '\\nfoo' vs ' foo'?\n\n\treturn text;\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-clipboard/src/utils/plaintexttohtml.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module core/editingkeystrokehandler\n */\n\nimport KeystrokeHandler from '@ckeditor/ckeditor5-utils/src/keystrokehandler';\n\n/**\n * A keystroke handler for editor editing. Its instance is available\n * in {@link module:core/editor/standardeditor~StandardEditor#keystrokes} so plugins\n * can register their keystrokes.\n *\n * E.g. an undo plugin would do this:\n *\n *\t\teditor.keystrokes.set( 'ctrl + Z', 'undo' );\n *\t\teditor.keystrokes.set( 'ctrl + shift + Z', 'redo' );\n *\t\teditor.keystrokes.set( 'ctrl + Y', 'redo' );\n *\n * @extends utils/keystrokehandler~KeystrokeHandler\n */\nexport default class EditingKeystrokeHandler extends KeystrokeHandler {\n\t/**\n\t * Creates an instance of the keystroke handler.\n\t *\n\t * @param {module:core/editor/editor~Editor} editor\n\t */\n\tconstructor( editor ) {\n\t\tsuper();\n\n\t\t/**\n\t\t * The editor instance.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:core/editor/editor~Editor}\n\t\t */\n\t\tthis.editor = editor;\n\t}\n\n\t/**\n\t * Registers a handler for the specified keystroke.\n\t *\n\t * * The handler can be specified as a command name or a callback.\n\t *\n\t * @param {String|Array.<String|Number>} keystroke Keystroke defined in a format accepted by\n\t * the {@link module:utils/keyboard~parseKeystroke} function.\n\t * @param {Function} callback If a string is passed, then the keystroke will\n\t * {@link module:core/editor/editor~Editor#execute execute a command}.\n\t * If a function, then it will be called with the\n\t * {@link module:engine/view/observer/keyobserver~KeyEventData key event data} object and\n\t * a helper to both `preventDefault` and `stopPropagation` of the event.\n\t */\n\tset( keystroke, callback ) {\n\t\tif ( typeof callback == 'string' ) {\n\t\t\tconst commandName = callback;\n\n\t\t\tcallback = () => {\n\t\t\t\tthis.editor.execute( commandName );\n\t\t\t};\n\t\t}\n\n\t\tsuper.set( keystroke, callback );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tlistenTo( emitter ) {\n\t\tthis._listener.listenTo( emitter, 'keydown', ( evt, data ) => {\n\t\t\tconst handled = this.press( data );\n\n\t\t\tif ( handled ) {\n\t\t\t\tdata.preventDefault();\n\t\t\t}\n\t\t} );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-core/src/editingkeystrokehandler.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module core/editor/editor\n */\n\nimport EmitterMixin from '@ckeditor/ckeditor5-utils/src/emittermixin';\nimport Config from '@ckeditor/ckeditor5-utils/src/config';\nimport PluginCollection from '../plugincollection';\nimport Locale from '@ckeditor/ckeditor5-utils/src/locale';\nimport DataController from '@ckeditor/ckeditor5-engine/src/controller/datacontroller';\nimport Document from '@ckeditor/ckeditor5-engine/src/model/document';\n\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\n\n/**\n * Class representing a basic editor. It contains a base architecture, without much additional logic.\n *\n * See also {@link module:core/editor/standardeditor~StandardEditor}.\n *\n * @mixes module:utils/emittermixin~EmitterMixin\n */\nexport default class Editor {\n\t/**\n\t * Creates a new instance of the Editor class.\n\t *\n\t * @param {Object} config The editor config.\n\t */\n\tconstructor( config ) {\n\t\t/**\n\t\t * Holds all configurations specific to this editor instance.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:utils/config~Config}\n\t\t */\n\t\tthis.config = new Config( config );\n\n\t\t/**\n\t\t * The plugins loaded and in use by this editor instance.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:core/plugin~PluginCollection}\n\t\t */\n\t\tthis.plugins = new PluginCollection( this );\n\n\t\t/**\n\t\t * Commands registered to the editor.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Map.<module:core/command/command~Command>}\n\t\t */\n\t\tthis.commands = new Map();\n\n\t\t/**\n\t\t * @readonly\n\t\t * @member {module:utils/locale~Locale}\n\t\t */\n\t\tthis.locale = new Locale( this.config.get( 'lang' ) );\n\n\t\t/**\n\t\t * Shorthand for {@link module:utils/locale~Locale#t}.\n\t\t *\n\t\t * @see module:utils/locale~Locale#t\n\t\t * @method #t\n\t\t */\n\t\tthis.t = this.locale.t;\n\n\t\t/**\n\t\t * Tree Model document managed by this editor.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/model/document~Document}\n\t\t */\n\t\tthis.document = new Document();\n\n\t\t/**\n\t\t * Instance of the {@link module:engine/controller/datacontroller~DataController data controller}.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/controller/datacontroller~DataController}\n\t\t */\n\t\tthis.data = new DataController( this.document );\n\n\t\t/**\n\t\t * Instance of the {@link module:engine/controller/editingcontroller~EditingController editing controller}.\n\t\t *\n\t\t * This property is set by more specialized editor classes (such as {@link module:core/editor/standardeditor~StandardEditor}),\n\t\t * however, it's required for features to work as their engine-related parts will try to connect converters.\n\t\t *\n\t\t * When defining a virtual editor class, like one working in Node.js, it's possible to plug a virtual\n\t\t * editing controller which only instantiates necessary properties, but without any observers and listeners.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/controller/editingcontroller~EditingController} #editing\n\t\t */\n\t}\n\n\t/**\n\t * Loads and initializes plugins specified in the config.\n\t *\n\t * @returns {Promise} A promise which resolves once the initialization is completed.\n\t */\n\tinitPlugins() {\n\t\tconst that = this;\n\t\tconst config = this.config;\n\n\t\treturn loadPlugins()\n\t\t\t.then( ( loadedPlugins ) => {\n\t\t\t\treturn initPlugins( loadedPlugins, 'init' )\n\t\t\t\t\t.then( () => initPlugins( loadedPlugins, 'afterInit' ) );\n\t\t\t} )\n\t\t\t.then( () => this.fire( 'pluginsReady' ) );\n\n\t\tfunction loadPlugins() {\n\t\t\treturn that.plugins.load( config.get( 'plugins' ) || [] );\n\t\t}\n\n\t\tfunction initPlugins( loadedPlugins, method ) {\n\t\t\treturn loadedPlugins.reduce( ( promise, plugin ) => {\n\t\t\t\treturn promise.then( plugin[ method ].bind( plugin ) );\n\t\t\t}, Promise.resolve() );\n\t\t}\n\t}\n\n\t/**\n\t * Destroys the editor instance, releasing all resources used by it.\n\t *\n\t * @fires module:core/editor/editor~Editor#destroy\n\t * @returns {Promise} A promise that resolves once the editor instance is fully destroyed.\n\t */\n\tdestroy() {\n\t\tthis.fire( 'destroy' );\n\t\tthis.stopListening();\n\n\t\treturn Promise.resolve()\n\t\t\t.then( () => {\n\t\t\t\tthis.document.destroy();\n\t\t\t\tthis.data.destroy();\n\t\t\t} );\n\t}\n\n\t/**\n\t * Executes specified command with given parameter.\n\t *\n\t * @param {String} commandName Name of command to execute.\n\t * @param {*} [commandParam] If set, command will be executed with this parameter.\n\t */\n\texecute( commandName, commandParam ) {\n\t\tlet command = this.commands.get( commandName );\n\n\t\tif ( !command ) {\n\t\t\t/**\n\t\t\t * Specified command has not been added to the editor.\n\t\t\t *\n\t\t\t * @error editor-command-not-found\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'editor-command-not-found: Specified command has not been added to the editor.' );\n\t\t}\n\n\t\tcommand._execute( commandParam );\n\t}\n\n\t/**\n\t * Creates a basic editor instance.\n\t *\n\t * @param {Object} config See {@link module:core/editor/editor~Editor}'s param.\n\t * @returns {Promise} Promise resolved once editor is ready.\n\t * @returns {module:core/editor/editor~Editor} return.editor The editor instance.\n\t */\n\tstatic create( config ) {\n\t\treturn new Promise( ( resolve ) => {\n\t\t\tconst editor = new this( config );\n\n\t\t\tresolve(\n\t\t\t\teditor.initPlugins()\n\t\t\t\t\t.then( () => {\n\t\t\t\t\t\teditor.fire( 'dataReady' );\n\t\t\t\t\t\teditor.fire( 'ready' );\n\t\t\t\t\t} )\n\t\t\t\t\t.then( () => editor )\n\t\t\t);\n\t\t} );\n\t}\n}\n\nmix( Editor, EmitterMixin );\n\n/**\n * Fired after {@link #initPlugins plugins are initialized}.\n *\n * @event pluginsReady\n */\n\n/**\n * Fired when the editor UI is ready. This event won't be fired if the editor has no UI.\n *\n * @event uiReady\n */\n\n/**\n * Fired when the data loaded to the editor is ready. If a specific editor doesn't load\n * any data initially, this event will be fired right before {@link #event:ready}.\n *\n * @event dataReady\n */\n\n/**\n * Fired when {@link #event:pluginsReady plugins}, {@link #event:uiReady UI} and {@link #event:dataReady data} and all additional\n * editor components are ready.\n *\n * @event ready\n */\n\n/**\n * Fired when this editor instance is destroyed. The editor at this point is not usable and this event should be used to\n * perform the clean-up in any plugin.\n *\n * @event destroy\n */\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-core/src/editor/editor.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module core/editor/standardeditor\n */\n\nimport Editor from './editor';\nimport EditingKeystrokeHandler from '../editingkeystrokehandler';\nimport EditingController from '@ckeditor/ckeditor5-engine/src/controller/editingcontroller';\n\nimport getDataFromElement from '@ckeditor/ckeditor5-utils/src/dom/getdatafromelement';\nimport setDataInElement from '@ckeditor/ckeditor5-utils/src/dom/setdatainelement';\n\n/**\n * Class representing a typical browser-based editor. It handles a single source element and\n * uses {@link module:engine/controller/editingcontroller~EditingController}.\n */\nexport default class StandardEditor extends Editor {\n\t/**\n\t * Creates a new instance of the standard editor.\n\t *\n\t * @param {HTMLElement} element The DOM element that will be the source\n\t * for the created editor.\n\t * @param {Object} config The editor config.\n\t */\n\tconstructor( element, config ) {\n\t\tsuper( config );\n\n\t\t/**\n\t\t * The element on which the editor has been initialized.\n\t\t *\n\t\t * @readonly\n\t\t * @member {HTMLElement}\n\t\t */\n\t\tthis.element = element;\n\n\t\t// Documented in Editor.\n\t\tthis.editing = new EditingController( this.document );\n\n\t\t/**\n\t\t * Instance of the {@link module:core/keystrokehandler~KeystrokeHandler}.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:core/keystrokehandler~KeystrokeHandler}\n\t\t */\n\t\tthis.keystrokes = new EditingKeystrokeHandler( this );\n\n\t\t/**\n\t\t * Editor UI instance.\n\t\t *\n\t\t * This property is set by more specialized editor constructors. However, it's required\n\t\t * for plugins to work (their UI-related part will try to interact with editor UI),\n\t\t * so every editor class which is meant to work with default plugins should set this property.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:core/editor/editorui~EditorUI} #ui\n\t\t */\n\n\t\tthis.keystrokes.listenTo( this.editing.view );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tdestroy() {\n\t\treturn Promise.resolve()\n\t\t\t.then( () => this.keystrokes.destroy() )\n\t\t\t.then( () => this.editing.destroy() )\n\t\t\t.then( super.destroy() );\n\t}\n\n\t/**\n\t * Sets the data in the editor's main root.\n\t *\n\t * @param {*} data The data to load.\n\t */\n\tsetData( data ) {\n\t\tthis.data.set( data );\n\t}\n\n\t/**\n\t * Gets the data from the editor's main root.\n\t */\n\tgetData() {\n\t\treturn this.data.get();\n\t}\n\n\t/**\n\t * Updates the {@link #element editor element}'s content with the data.\n\t */\n\tupdateEditorElement() {\n\t\tsetDataInElement( this.element, this.getData() );\n\t}\n\n\t/**\n\t * Loads the data from the {@link #element editor element} to the main root.\n\t */\n\tloadDataFromEditorElement() {\n\t\tthis.setData( getDataFromElement( this.element ) );\n\t}\n\n\t/**\n\t * Creates a standard editor instance.\n\t *\n\t * @param {HTMLElement} element See {@link module:core/editor/standardeditor~StandardEditor}'s param.\n\t * @param {Object} config See {@link module:core/editor/standardeditor~StandardEditor}'s param.\n\t * @returns {Promise} Promise resolved once editor is ready.\n\t * @returns {module:core/editor/standardeditor~StandardEditor} return.editor The editor instance.\n\t */\n\tstatic create( element, config ) {\n\t\treturn new Promise( ( resolve ) => {\n\t\t\tconst editor = new this( element, config );\n\n\t\t\tresolve(\n\t\t\t\teditor.initPlugins()\n\t\t\t\t\t.then( () => {\n\t\t\t\t\t\teditor.fire( 'dataReady' );\n\t\t\t\t\t\teditor.fire( 'ready' );\n\t\t\t\t\t} )\n\t\t\t\t\t.then( () => editor )\n\t\t\t);\n\t\t} );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-core/src/editor/standardeditor.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module core/plugincollection\n */\n\nimport Plugin from './plugin';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\nimport log from '@ckeditor/ckeditor5-utils/src/log';\n\n/**\n * Manages a list of CKEditor plugins, including loading, resolving dependencies and initialization.\n */\nexport default class PluginCollection {\n\t/**\n\t * Creates an instance of the PluginCollection class.\n\t * Allows loading and initializing plugins and their dependencies.\n\t *\n\t * @param {module:core/editor/editor~Editor} editor\n\t * @param {Array.<Function>} [availablePlugins] Plugins (constructors) which the collection will be able to use\n\t * when {@link module:core/plugin~PluginCollection#load} is used with plugin names (strings, instead of constructors).\n\t * Usually, the editor will pass its built-in plugins to the collection so they can later be\n\t * used in `config.plugins` or `config.removePlugins` by names.\n\t */\n\tconstructor( editor, availablePlugins = [] ) {\n\t\t/**\n\t\t * @protected\n\t\t * @member {module:core/editor/editor~Editor} module:core/plugin~PluginCollection#_editor\n\t\t */\n\t\tthis._editor = editor;\n\n\t\t/**\n\t\t * Map of plugin constructors which can be retrieved by their names.\n\t\t *\n\t\t * @protected\n\t\t * @member {Map.<String|Function,Function>} module:core/plugin~PluginCollection#_availablePlugins\n\t\t */\n\t\tthis._availablePlugins = new Map();\n\n\t\t/**\n\t\t * @protected\n\t\t * @member {Map} module:core/plugin~PluginCollection#_plugins\n\t\t */\n\t\tthis._plugins = new Map();\n\n\t\tfor ( const PluginConstructor of availablePlugins ) {\n\t\t\tthis._availablePlugins.set( PluginConstructor, PluginConstructor );\n\n\t\t\tif ( PluginConstructor.pluginName ) {\n\t\t\t\tthis._availablePlugins.set( PluginConstructor.pluginName, PluginConstructor );\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Collection iterator. Returns `[ PluginConstructor, pluginInstance ]` pairs.\n\t */\n\t*[ Symbol.iterator ]() {\n\t\tfor ( const entry of this._plugins ) {\n\t\t\tif ( typeof entry[ 0 ] == 'function' ) {\n\t\t\t\tyield entry;\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Gets the plugin instance by its constructor or name.\n\t *\n\t * @param {Function|String} key The plugin constructor or {@link module:core/plugin~Plugin.pluginName name}.\n\t * @returns {module:core/plugin~Plugin}\n\t */\n\tget( key ) {\n\t\treturn this._plugins.get( key );\n\t}\n\n\t/**\n\t * Loads a set of plugins and adds them to the collection.\n\t *\n\t * @param {Array.<Function|String>} plugins An array of {@link module:core/plugin~Plugin plugin constructors}\n\t * or {@link module:core/plugin~Plugin.pluginName plugin names}. The second option (names) work only if\n\t * `availablePlugins` were passed to the {@link #constructor}.\n\t * @param {Array.<String|Function>} [removePlugins] Names of plugins or plugin constructors\n\t * which should not be loaded (despite being specified in the `plugins` array).\n\t * @returns {Promise} A promise which gets resolved once all plugins are loaded and available into the\n\t * collection.\n\t * @returns {Promise.<Array.<module:core/plugin~Plugin>>} returns.loadedPlugins The array of loaded plugins.\n\t */\n\tload( plugins, removePlugins = [] ) {\n\t\tconst that = this;\n\t\tconst editor = this._editor;\n\t\tconst loading = new Set();\n\t\tconst loaded = [];\n\n\t\tconst pluginConstructors = mapToAvailableConstructors( plugins );\n\t\tconst removePluginConstructors = mapToAvailableConstructors( removePlugins );\n\t\tconst missingPlugins = getMissingPluginNames( plugins );\n\n\t\tif ( missingPlugins ) {\n\t\t\t// TODO update this error docs with links to docs because it will be a frequent problem.\n\n\t\t\t/**\n\t\t\t * Some plugins are not available and could not be loaded.\n\t\t\t *\n\t\t\t * Plugin classes (constructors) need to be provided to the editor before they can be loaded by name.\n\t\t\t * This is usually done by the builder by setting the {@link module:core/editor/editor~Editor.build}\n\t\t\t * property.\n\t\t\t *\n\t\t\t * @error plugincollection-plugin-not-found\n\t\t\t * @param {Array.<String>} plugins The name of the plugins which could not be loaded.\n\t\t\t */\n\t\t\tconst errorMsg = 'plugincollection-plugin-not-found: Some plugins are not available and could not be loaded.';\n\n\t\t\t// Log the error so it's more visible on the console. Hopefuly, for better DX.\n\t\t\tlog.error( errorMsg, { plugins: missingPlugins } );\n\n\t\t\treturn Promise.reject( new CKEditorError( errorMsg, { plugins: missingPlugins } ) );\n\t\t}\n\n\t\treturn Promise.all( pluginConstructors.map( loadPlugin ) )\n\t\t\t.then( () => loaded );\n\n\t\tfunction loadPlugin( PluginConstructor ) {\n\t\t\tif ( removePluginConstructors.includes( PluginConstructor ) ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// The plugin is already loaded or being loaded - do nothing.\n\t\t\tif ( that.get( PluginConstructor ) || loading.has( PluginConstructor ) ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\treturn instantiatePlugin( PluginConstructor )\n\t\t\t\t.catch( ( err ) => {\n\t\t\t\t\t/**\n\t\t\t\t\t * It was not possible to load the plugin.\n\t\t\t\t\t *\n\t\t\t\t\t * @error plugincollection-load\n\t\t\t\t\t * @param {String} plugin The name of the plugin that could not be loaded.\n\t\t\t\t\t */\n\t\t\t\t\tlog.error( 'plugincollection-load: It was not possible to load the plugin.', { plugin: PluginConstructor } );\n\n\t\t\t\t\tthrow err;\n\t\t\t\t} );\n\t\t}\n\n\t\tfunction instantiatePlugin( PluginConstructor ) {\n\t\t\treturn new Promise( ( resolve ) => {\n\t\t\t\tloading.add( PluginConstructor );\n\n\t\t\t\tassertIsPlugin( PluginConstructor );\n\n\t\t\t\tif ( PluginConstructor.requires ) {\n\t\t\t\t\tPluginConstructor.requires.forEach( ( RequiredPluginConstructorOrName ) => {\n\t\t\t\t\t\tconst RequiredPluginConstructor = getPluginConstructor( RequiredPluginConstructorOrName );\n\n\t\t\t\t\t\tif ( removePlugins.includes( RequiredPluginConstructor ) ) {\n\t\t\t\t\t\t\t/**\n\t\t\t\t\t\t\t * Cannot load a plugin because one of its dependencies is listed in the `removePlugins` option.\n\t\t\t\t\t\t\t *\n\t\t\t\t\t\t\t * @error plugincollection-required\n\t\t\t\t\t\t\t * @param {Function} plugin The required plugin.\n\t\t\t\t\t\t\t * @param {Function} requiredBy The parent plugin.\n\t\t\t\t\t\t\t */\n\t\t\t\t\t\t\tthrow new CKEditorError(\n\t\t\t\t\t\t\t\t'plugincollection-required: Cannot load a plugin because one of its dependencies is listed in' +\n\t\t\t\t\t\t\t\t'the `removePlugins` option.',\n\t\t\t\t\t\t\t\t{ plugin: RequiredPluginConstructor, requiredBy: PluginConstructor }\n\t\t\t\t\t\t\t);\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\tloadPlugin( RequiredPluginConstructor );\n\t\t\t\t\t} );\n\t\t\t\t}\n\n\t\t\t\tconst plugin = new PluginConstructor( editor );\n\t\t\t\tthat._add( PluginConstructor, plugin );\n\t\t\t\tloaded.push( plugin );\n\n\t\t\t\tresolve();\n\t\t\t} );\n\t\t}\n\n\t\tfunction getPluginConstructor( PluginConstructorOrName ) {\n\t\t\tif ( typeof PluginConstructorOrName == 'function' ) {\n\t\t\t\treturn PluginConstructorOrName;\n\t\t\t}\n\n\t\t\treturn that._availablePlugins.get( PluginConstructorOrName );\n\t\t}\n\n\t\tfunction assertIsPlugin( PluginConstructor ) {\n\t\t\tif ( !( PluginConstructor.prototype instanceof Plugin ) ) {\n\t\t\t\t/**\n\t\t\t\t * The loaded plugin module is not an instance of {@link module:core/plugin~Plugin}.\n\t\t\t\t *\n\t\t\t\t * @error plugincollection-instance\n\t\t\t\t * @param {*} plugin The constructor which is meant to be loaded as a plugin.\n\t\t\t\t */\n\t\t\t\tthrow new CKEditorError(\n\t\t\t\t\t'plugincollection-instance: The loaded plugin module is not an instance of Plugin.',\n\t\t\t\t\t{ plugin: PluginConstructor }\n\t\t\t\t);\n\t\t\t}\n\t\t}\n\n\t\tfunction getMissingPluginNames( plugins ) {\n\t\t\tconst missingPlugins = [];\n\n\t\t\tfor ( const pluginNameOrConstructor of plugins ) {\n\t\t\t\tif ( !getPluginConstructor( pluginNameOrConstructor ) ) {\n\t\t\t\t\tmissingPlugins.push( pluginNameOrConstructor );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn missingPlugins.length ? missingPlugins : null;\n\t\t}\n\n\t\tfunction mapToAvailableConstructors( plugins ) {\n\t\t\treturn plugins\n\t\t\t\t.map( pluginNameOrConstructor => getPluginConstructor( pluginNameOrConstructor ) )\n\t\t\t\t.filter( PluginConstructor => !!PluginConstructor );\n\t\t}\n\t}\n\n\t/**\n\t * Adds the plugin to the collection. Exposed mainly for testing purposes.\n\t *\n\t * @protected\n\t * @param {Function} PluginConstructor The plugin constructor.\n\t * @param {module:core/plugin~Plugin} plugin The instance of the plugin.\n\t */\n\t_add( PluginConstructor, plugin ) {\n\t\tthis._plugins.set( PluginConstructor, plugin );\n\n\t\tif ( PluginConstructor.pluginName ) {\n\t\t\tthis._plugins.set( PluginConstructor.pluginName, plugin );\n\t\t}\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-core/src/plugincollection.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module editor-classic/classic\n */\n\nimport StandardEditor from '@ckeditor/ckeditor5-core/src/editor/standardeditor';\nimport HtmlDataProcessor from '@ckeditor/ckeditor5-engine/src/dataprocessor/htmldataprocessor';\nimport ClassicEditorUI from './classiceditorui';\nimport ClassicEditorUIView from './classiceditoruiview';\nimport ElementReplacer from '@ckeditor/ckeditor5-utils/src/elementreplacer';\n\nimport '../theme/theme.scss';\n\n/**\n * Classic editor. Uses inline editable and sticky toolbar, all\n * enclosed in a boxed UI.\n *\n * @extends module:core/editor/standardeditor~StandardEditor\n */\nexport default class ClassicEditor extends StandardEditor {\n\t/**\n\t * Creates an instance of the classic editor.\n\t *\n\t * @param {HTMLElement} element The DOM element that will be the source for the created editor.\n\t * The data will be loaded from it and loaded back to it once the editor is destroyed.\n\t * @param {Object} config The editor configuration.\n\t */\n\tconstructor( element, config ) {\n\t\tsuper( element, config );\n\n\t\tthis.document.createRoot();\n\t\tthis.data.processor = new HtmlDataProcessor();\n\t\tthis.ui = new ClassicEditorUI( this, new ClassicEditorUIView( this.locale ) );\n\n\t\t/**\n\t\t * The element replacer instance used to hide the editor element.\n\t\t *\n\t\t * @protected\n\t\t * @member {module:utils/elementreplacer~ElementReplacer}\n\t\t */\n\t\tthis._elementReplacer = new ElementReplacer();\n\t}\n\n\t/**\n\t * Destroys the editor instance, releasing all resources used by it.\n\t *\n\t * Updates the original editor element with the data.\n\t *\n\t * @returns {Promise}\n\t */\n\tdestroy() {\n\t\tthis.updateEditorElement();\n\t\tthis._elementReplacer.restore();\n\n\t\treturn this.ui.destroy()\n\t\t\t.then( () => super.destroy() );\n\t}\n\n\t/**\n\t * Creates a classic editor instance.\n\t *\n\t *\t\tClassicEditor.create( document.querySelector( '#editor' ), {\n\t *\t\t\tplugins: [ Delete, Enter, Typing, Paragraph, Undo, Bold, Italic ],\n\t *\t\t\ttoolbar: [ 'bold', 'italic', 'undo', 'redo' ]\n\t *\t\t} )\n\t *\t\t.then( editor => {\n\t *\t\t\tconsole.log( 'Editor was initialized', editor );\n\t *\t\t} )\n\t *\t\t.catch( err => {\n\t *\t\t\tconsole.error( err.stack );\n\t *\t\t} );\n\t *\n\t * @param {HTMLElement} element See {@link module:editor-classic/classic~ClassicEditor#constructor}'s parameters.\n\t * @param {Object} config See {@link module:editor-classic/classic~ClassicEditor#constructor}'s parameters.\n\t * @returns {Promise} A promise resolved once the editor is ready.\n\t * @returns {module:core/editor/standardeditor~StandardEditor} return.editor The editor instance.\n\t */\n\tstatic create( element, config ) {\n\t\treturn new Promise( ( resolve ) => {\n\t\t\tconst editor = new ClassicEditor( element, config );\n\n\t\t\tresolve(\n\t\t\t\teditor.initPlugins()\n\t\t\t\t\t.then( () => editor._elementReplacer.replace( element, editor.ui.view.element ) )\n\t\t\t\t\t.then( () => editor.ui.init() )\n\t\t\t\t\t.then( () => editor.fire( 'uiReady' ) )\n\t\t\t\t\t.then( () => editor.editing.view.attachDomRoot( editor.ui.view.editableElement ) )\n\t\t\t\t\t.then( () => editor.loadDataFromEditorElement() )\n\t\t\t\t\t.then( () => {\n\t\t\t\t\t\teditor.fire( 'dataReady' );\n\t\t\t\t\t\teditor.fire( 'ready' );\n\t\t\t\t\t} )\n\t\t\t\t\t.then( () => editor )\n\t\t\t);\n\t\t} );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-editor-classic/src/classic.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module editor-classic/classiceditorui\n */\n\nimport ComponentFactory from '@ckeditor/ckeditor5-ui/src/componentfactory';\nimport FocusTracker from '@ckeditor/ckeditor5-utils/src/focustracker';\n\n/**\n * The classic editor UI class.\n */\nexport default class ClassicEditorUI {\n\t/**\n\t * Creates an instance of the editor UI class.\n\t *\n\t * @param {module:core/editor/editor~Editor} editor The editor instance.\n\t * @param {module:ui/editorui/editoruiview~EditorUIView} view View of the ui.\n\t */\n\tconstructor( editor, view ) {\n\t\t/**\n\t\t * Editor that the UI belongs to.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:core/editor/editor~Editor}\n\t\t */\n\t\tthis.editor = editor;\n\n\t\t/**\n\t\t * View of the ui.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:ui/editorui/editoruiview~EditorUIView}\n\t\t */\n\t\tthis.view = view;\n\n\t\t/**\n\t\t * Instance of the {@link module:ui/componentfactory~ComponentFactory}.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:ui/componentfactory~ComponentFactory}\n\t\t */\n\t\tthis.componentFactory = new ComponentFactory( editor );\n\n\t\t/**\n\t\t * Keeps information about editor focus.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:utils/focustracker~FocusTracker}\n\t\t */\n\t\tthis.focusTracker = new FocusTracker();\n\n\t\t// Set–up the view.\n\t\tview.set( 'width', editor.config.get( 'ui.width' ) );\n\t\tview.set( 'height', editor.config.get( 'ui.height' ) );\n\n\t\t// Set–up the toolbar.\n\t\tview.toolbar.bind( 'isActive' ).to( this.focusTracker, 'isFocused' );\n\t\tview.toolbar.limiterElement = view.element;\n\n\t\t// Setup the editable.\n\t\tconst editingRoot = editor.editing.createRoot( 'div' );\n\t\tview.editable.bind( 'isReadOnly' ).to( editingRoot );\n\t\tview.editable.bind( 'isFocused' ).to( editor.editing.view );\n\t\tview.editable.name = editingRoot.rootName;\n\t\tthis.focusTracker.add( view.editableElement );\n\t}\n\n\t/**\n\t * Initializes the UI.\n\t *\n\t * @returns {Promise} A Promise resolved when the initialization process is finished.\n\t */\n\tinit() {\n\t\tconst editor = this.editor;\n\n\t\treturn this.view.init()\n\t\t\t.then( () => {\n\t\t\t\tconst toolbarConfig = editor.config.get( 'toolbar' );\n\t\t\t\tconst promises = [];\n\n\t\t\t\tif ( toolbarConfig ) {\n\t\t\t\t\tpromises.push( this.view.toolbar.fillFromConfig( toolbarConfig, this.componentFactory ) );\n\t\t\t\t}\n\n\t\t\t\treturn Promise.all( promises );\n\t\t\t} )\n\t\t\t.then( () => {\n\t\t\t\tconst toolbarFocusTracker = this.view.toolbar.focusTracker;\n\n\t\t\t\t// Because toolbar items can get focus, the overall state of\n\t\t\t\t// the toolbar must also be tracked.\n\t\t\t\tthis.focusTracker.add( this.view.toolbar.element );\n\n\t\t\t\t// Focus the toolbar on the keystroke, if not already focused.\n\t\t\t\teditor.keystrokes.set( 'Alt+F10', ( data, cancel ) => {\n\t\t\t\t\tif ( this.focusTracker.isFocused && !toolbarFocusTracker.isFocused ) {\n\t\t\t\t\t\tthis.view.toolbar.focus();\n\t\t\t\t\t\tcancel();\n\t\t\t\t\t}\n\t\t\t\t} );\n\n\t\t\t\t// Blur the toolbar and bring the focus back to editable on the keystroke.\n\t\t\t\tthis.view.toolbar.keystrokes.set( 'Esc', ( data, cancel ) => {\n\t\t\t\t\tif ( toolbarFocusTracker.isFocused ) {\n\t\t\t\t\t\teditor.editing.view.focus();\n\t\t\t\t\t\tcancel();\n\t\t\t\t\t}\n\t\t\t\t} );\n\t\t\t} );\n\t}\n\n\t/**\n\t * Destroys the UI.\n\t *\n\t * @returns {Promise} A Promise resolved when the destruction process is finished.\n\t */\n\tdestroy() {\n\t\treturn this.view.destroy();\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-editor-classic/src/classiceditorui.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module editor-classic/classiceditoruiview\n */\n\nimport BoxedEditorUIView from '@ckeditor/ckeditor5-ui/src/editorui/boxed/boxededitoruiview';\nimport InlineEditableUIView from '@ckeditor/ckeditor5-ui/src/editableui/inline/inlineeditableuiview';\nimport StickyToolbarView from '@ckeditor/ckeditor5-ui/src/toolbar/sticky/stickytoolbarview';\n\n/**\n * Classic editor UI view. Uses inline editable and sticky toolbar, all\n * enclosed in a boxed UI view.\n *\n * @extends module:ui/editorui/boxed/boxededitoruiview~BoxedEditorUIView\n */\nexport default class ClassicEditorUIView extends BoxedEditorUIView {\n\t/**\n\t * Creates an instance of the classic editor UI view.\n\t *\n\t * @param {module:utils/locale~Locale} locale The {@link module:core/editor/editor~Editor#locale} instance.\n\t */\n\tconstructor( locale ) {\n\t\tsuper( locale );\n\n\t\t/**\n\t\t * A sticky toolbar view instance.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:ui/toolbar/sticky/stickytoolbarview~StickyToolbarView}\n\t\t */\n\t\tthis.toolbar = new StickyToolbarView( locale );\n\n\t\t/**\n\t\t * Editable UI view.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:ui/editableui/inline/inlineeditableuiview~InlineEditableUIView}\n\t\t */\n\t\tthis.editable = new InlineEditableUIView( locale );\n\n\t\tthis.top.add( this.toolbar );\n\t\tthis.main.add( this.editable );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tget editableElement() {\n\t\treturn this.editable.element;\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-editor-classic/src/classiceditoruiview.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/controller/datacontroller\n */\n\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\nimport EmitterMixin from '@ckeditor/ckeditor5-utils/src/emittermixin';\n\nimport Mapper from '../conversion/mapper';\n\nimport ModelConversionDispatcher from '../conversion/modelconversiondispatcher';\nimport { insertText } from '../conversion/model-to-view-converters';\n\nimport ViewConversionDispatcher from '../conversion/viewconversiondispatcher';\nimport { convertText, convertToModelFragment } from '../conversion/view-to-model-converters';\n\nimport ViewDocumentFragment from '../view/documentfragment';\n\nimport ModelRange from '../model/range';\nimport ModelPosition from '../model/position';\n\nimport insertContent from './insertcontent';\nimport deleteContent from './deletecontent';\nimport modifySelection from './modifyselection';\nimport getSelectedContent from './getselectedcontent';\n\n/**\n * Controller for the data pipeline. The data pipeline controls how data is retrieved from the document\n * and set inside it. Hence, the controller features two methods which allow to {@link ~DataController#get get}\n * and {@link ~DataController#set set} data of the {@link ~DataController#model model}\n * using given:\n *\n * * {@link module:engine/dataprocessor/dataprocessor~DataProcessor data processor},\n * * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher model to view} and\n * * {@link module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher view to model} converters.\n *\n * @mixes module:utils/emittermixin~EmitterMixin\n */\nexport default class DataController {\n\t/**\n\t * Creates data controller instance.\n\t *\n\t * @param {module:engine/model/document~Document} model Document model.\n\t * @param {module:engine/dataprocessor/dataprocessor~DataProcessor} [dataProcessor] Data processor which should used by the controller.\n\t */\n\tconstructor( model, dataProcessor ) {\n\t\t/**\n\t\t * Document model.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/model/document~Document}\n\t\t */\n\t\tthis.model = model;\n\n\t\t/**\n\t\t * Data processor used during the conversion.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/dataProcessor~DataProcessor}\n\t\t */\n\t\tthis.processor = dataProcessor;\n\n\t\t/**\n\t\t * Mapper used for the conversion. It has no permanent bindings, because they are created when getting data and\n\t\t * cleared directly after data are converted. However, the mapper is defined as class property, because\n\t\t * it needs to be passed to the `ModelConversionDispatcher` as a conversion API.\n\t\t *\n\t\t * @member {module:engine/conversion/mapper~Mapper}\n\t\t */\n\t\tthis.mapper = new Mapper();\n\n\t\t/**\n\t\t * Model to view conversion dispatcher used by the {@link #get get method}.\n\t\t * To attach model to view converter to the data pipeline you need to add lister to this property:\n\t\t *\n\t\t *\t\tdata.modelToView( 'insert:$element', customInsertConverter );\n\t\t *\n\t\t * Or use {@link module:engine/conversion/buildmodelconverter~ModelConverterBuilder}:\n\t\t *\n\t\t *\t\tbuildModelConverter().for( data.modelToView ).fromAttribute( 'bold' ).toElement( 'b' );\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher}\n\t\t */\n\t\tthis.modelToView = new ModelConversionDispatcher( this.model, {\n\t\t\tmapper: this.mapper\n\t\t} );\n\t\tthis.modelToView.on( 'insert:$text', insertText(), { priority: 'lowest' } );\n\n\t\t/**\n\t\t * View to model conversion dispatcher used by the {@link #set set method}.\n\t\t * To attach view to model converter to the data pipeline you need to add lister to this property:\n\t\t *\n\t\t *\t\tdata.viewToModel( 'element', customElementConverter );\n\t\t *\n\t\t * Or use {@link module:engine/conversion/buildviewconverter~ViewConverterBuilder}:\n\t\t *\n\t\t *\t\tbuildViewConverter().for( data.viewToModel ).fromElement( 'b' ).toAttribute( 'bold', 'true' );\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher}\n\t\t */\n\t\tthis.viewToModel = new ViewConversionDispatcher( {\n\t\t\tschema: model.schema\n\t\t} );\n\n\t\t// Define default converters for text and elements.\n\t\t//\n\t\t// Note that if there is no default converter for the element it will be skipped, for instance `<b>foo</b>` will be\n\t\t// converted to nothing. We add `convertToModelFragment` as a last converter so it converts children of that\n\t\t// element to the document fragment so `<b>foo</b>` will be converted to `foo` if there is no converter for `<b>`.\n\t\tthis.viewToModel.on( 'text', convertText(), { priority: 'lowest' } );\n\t\tthis.viewToModel.on( 'element', convertToModelFragment(), { priority: 'lowest' } );\n\t\tthis.viewToModel.on( 'documentFragment', convertToModelFragment(), { priority: 'lowest' } );\n\n\t\tthis.on( 'insertContent', ( evt, data ) => insertContent( this, data.content, data.selection, data.batch ) );\n\t\tthis.on( 'deleteContent', ( evt, data ) => deleteContent( data.selection, data.batch, data.options ) );\n\t\tthis.on( 'modifySelection', ( evt, data ) => modifySelection( this, data.selection, data.options ) );\n\t\tthis.on( 'getSelectedContent', ( evt, data ) => {\n\t\t\tdata.content = getSelectedContent( data.selection );\n\t\t} );\n\t}\n\n\t/**\n\t * Returns model's data converted by the {@link #modelToView model to view converters} and\n\t * formatted by the {@link #processor data processor}.\n\t *\n\t * @param {String} [rootName='main'] Root name.\n\t * @returns {String} Output data.\n\t */\n\tget( rootName = 'main' ) {\n\t\t// Get model range.\n\t\treturn this.stringify( this.model.getRoot( rootName ) );\n\t}\n\n\t/**\n\t * Returns the content of the given {@link module:engine/model/element~Element model's element} or\n\t * {@link module:engine/model/documentfragment~DocumentFragment model document fragment} converted by the\n\t * {@link #modelToView model to view converters} and formatted by the\n\t * {@link #processor data processor}.\n\t *\n\t * @param {module:engine/model/element~Element|module:engine/model/documentfragment~DocumentFragment} modelElementOrFragment\n\t * Element which content will be stringified.\n\t * @returns {String} Output data.\n\t */\n\tstringify( modelElementOrFragment ) {\n\t\t// model -> view\n\t\tconst viewDocumentFragment = this.toView( modelElementOrFragment );\n\n\t\t// view -> data\n\t\treturn this.processor.toData( viewDocumentFragment );\n\t}\n\n\t/**\n\t * Returns the content of the given {@link module:engine/model/element~Element model element} or\n\t * {@link module:engine/model/documentfragment~DocumentFragment model document fragment} converted by the\n\t * {@link #modelToView model to view converters} to a\n\t * {@link module:engine/view/documentfragment~DocumentFragment view document fragment}.\n\t *\n\t * @param {module:engine/model/element~Element|module:engine/model/documentfragment~DocumentFragment} modelElementOrFragment\n\t * Element or document fragment which content will be converted.\n\t * @returns {module:engine/view/documentfragment~DocumentFragment} Output view DocumentFragment.\n\t */\n\ttoView( modelElementOrFragment ) {\n\t\tconst modelRange = ModelRange.createIn( modelElementOrFragment );\n\n\t\tconst viewDocumentFragment = new ViewDocumentFragment();\n\t\tthis.mapper.bindElements( modelElementOrFragment, viewDocumentFragment );\n\n\t\tthis.modelToView.convertInsertion( modelRange );\n\n\t\tthis.mapper.clearBindings();\n\n\t\treturn viewDocumentFragment;\n\t}\n\n\t/**\n\t * Sets input data parsed by the {@link #processor data processor} and\n\t * converted by the {@link #viewToModel view to model converters}.\n\t *\n\t * This method also creates a batch with all the changes applied. If all you need is to parse data use\n\t * the {@link #parse} method.\n\t *\n\t * @param {String} data Input data.\n\t * @param {String} [rootName='main'] Root name.\n\t */\n\tset( data, rootName = 'main' ) {\n\t\t// Save to model.\n\t\tconst modelRoot = this.model.getRoot( rootName );\n\n\t\tthis.model.enqueueChanges( () => {\n\t\t\t// Clearing selection is a workaround for ticket #569 (LiveRange loses position after removing data from document).\n\t\t\t// After fixing it this code should be removed.\n\t\t\tthis.model.selection.removeAllRanges();\n\t\t\tthis.model.selection.clearAttributes();\n\n\t\t\t// Initial batch should be ignored by features like undo, etc.\n\t\t\tthis.model.batch( 'transparent' )\n\t\t\t\t.remove( ModelRange.createIn( modelRoot ) )\n\t\t\t\t.insert( ModelPosition.createAt( modelRoot, 0 ), this.parse( data ) );\n\t\t} );\n\t}\n\n\t/**\n\t * Returns data parsed by the {@link #processor data processor} and then\n\t * converted by the {@link #viewToModel view to model converters}.\n\t *\n\t * @see #set\n\t * @param {String} data Data to parse.\n\t * @param {String} [context='$root'] Base context in which the view will be converted to the model. See:\n\t * {@link module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher#convert}.\n\t * @returns {module:engine/model/documentfragment~DocumentFragment} Parsed data.\n\t */\n\tparse( data, context = '$root' ) {\n\t\t// data -> view\n\t\tconst viewDocumentFragment = this.processor.toView( data );\n\n\t\t// view -> model\n\t\treturn this.toModel( viewDocumentFragment, context );\n\t}\n\n\t/**\n\t * Returns the content of the given {@link module:engine/view/element~Element view element} or\n\t * {@link module:engine/view/documentfragment~DocumentFragment view document fragment} converted by the\n\t * {@link #viewToModel view to model converters} to a\n\t * {@link module:engine/model/documentfragment~DocumentFragment model document fragment}.\n\t *\n\t * @param {module:engine/view/element~Element|module:engine/view/documentfragment~DocumentFragment} viewElementOrFragment\n\t * Element or document fragment which content will be converted.\n\t * @param {String} [context='$root'] Base context in which the view will be converted to the model. See:\n\t * {@link module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher#convert}.\n\t * @returns {module:engine/model/documentfragment~DocumentFragment} Output document fragment.\n\t */\n\ttoModel( viewElementOrFragment, context = '$root' ) {\n\t\treturn this.viewToModel.convert( viewElementOrFragment, { context: [ context ] } );\n\t}\n\n\t/**\n\t * Removes all event listeners set by the DataController.\n\t */\n\tdestroy() {}\n\n\t/**\n\t * See {@link module:engine/controller/insertcontent~insertContent}.\n\t *\n\t * @fires insertContent\n\t * @param {module:engine/model/documentfragment~DocumentFragment} content The content to insert.\n\t * @param {module:engine/model/selection~Selection} selection Selection into which the content should be inserted.\n\t * @param {module:engine/model/batch~Batch} [batch] Batch to which deltas will be added. If not specified, then\n\t * changes will be added to a new batch.\n\t */\n\tinsertContent( content, selection, batch ) {\n\t\tthis.fire( 'insertContent', { content, selection, batch } );\n\t}\n\n\t/**\n\t * See {@link module:engine/controller/deletecontent~deleteContent}.\n\t *\n\t * Note: For the sake of predictability, the resulting selection should always be collapsed.\n\t * In cases where a feature wants to modify deleting behavior so selection isn't collapsed\n\t * (e.g. a table feature may want to keep row selection after pressing <kbd>Backspace</kbd>),\n\t * then that behavior should be implemented in the view's listener. At the same time, the table feature\n\t * will need to modify this method's behavior too, e.g. to \"delete contents and then collapse\n\t * the selection inside the last selected cell\" or \"delete the row and collapse selection somewhere near\".\n\t * That needs to be done in order to ensure that other features which use `deleteContent()` will work well with tables.\n\t *\n\t * @fires deleteContent\n\t * @param {module:engine/model/selection~Selection} selection Selection of which the content should be deleted.\n\t * @param {module:engine/model/batch~Batch} batch Batch to which deltas will be added.\n\t * @param {Object} options See {@link module:engine/controller/deletecontent~deleteContent}'s options.\n\t */\n\tdeleteContent( selection, batch, options ) {\n\t\tthis.fire( 'deleteContent', { batch, selection, options } );\n\t}\n\n\t/**\n\t * See {@link module:engine/controller/modifyselection~modifySelection}.\n\t *\n\t * @fires modifySelection\n\t * @param {module:engine/model/selection~Selection} The selection to modify.\n\t * @param {Object} options See {@link module:engine/controller/modifyselection~modifySelection}'s options.\n\t */\n\tmodifySelection( selection, options ) {\n\t\tthis.fire( 'modifySelection', { selection, options } );\n\t}\n\n\t/**\n\t * See {@link module:engine/controller/getselectedcontent~getSelectedContent}.\n\t *\n\t * @fires module:engine/controller/datacontroller~DataController#getSelectedContent\n\t * @param {module:engine/model/selection~Selection} selection The selection of which content will be retrieved.\n\t * @returns {module:engine/model/documentfragment~DocumentFragment} Document fragment holding the clone of the selected content.\n\t */\n\tgetSelectedContent( selection ) {\n\t\tconst evtData = { selection };\n\n\t\tthis.fire( 'getSelectedContent', evtData );\n\n\t\treturn evtData.content;\n\t}\n}\n\nmix( DataController, EmitterMixin );\n\n/**\n * Event fired when {@link #insertContent} method is called.\n * The {@link #insertContent default action of that method} is implemented as a\n * listener to this event so it can be fully customized by the features.\n *\n * @event insertContent\n * @param {Object} data\n * @param {module:engine/view/documentfragment~DocumentFragment} data.content The content to insert.\n * @param {module:engine/model/selection~Selection} data.selection Selection into which the content should be inserted.\n * @param {module:engine/model/batch~Batch} [data.batch] Batch to which deltas will be added.\n */\n\n/**\n * Event fired when {@link #deleteContent} method is called.\n * The {@link module:engine/controller/deletecontent~deleteContent default action of that method} is implemented as a\n * listener to this event so it can be fully customized by the features.\n *\n * @event deleteContent\n * @param {Object} data\n * @param {module:engine/model/batch~Batch} data.batch\n * @param {module:engine/model/selection~Selection} data.selection\n * @param {Object} data.options See {@link module:engine/controller/deletecontent~deleteContent}'s options.\n */\n\n/**\n * Event fired when {@link #modifySelection} method is called.\n * The {@link module:engine/controller/modifyselection~modifySelection default action of that method} is implemented as a\n * listener to this event so it can be fully customized by the features.\n *\n * @event modifySelection\n * @param {Object} data\n * @param {module:engine/model/selection~Selection} data.selection\n * @param {Object} data.options See {@link module:engine/controller/modifyselection~modifySelection}'s options.\n */\n\n/**\n * Event fired when {@link module:engine/controller/datacontroller~DataController#getSelectedContent} method is called.\n * The {@link module:engine/controller/getselectedcontent~getSelectedContent default action of that method} is implemented as a\n * listener to this event so it can be fully customized by the features.\n *\n * @event module:engine/controller/datacontroller~DataController#getSelectedContent\n * @param {Object} data\n * @param {module:engine/model/selection~Selection} data.selection\n * @param {module:engine/model/documentfragment~DocumentFragment} data.content The document fragment to return\n * (holding a clone of the selected content).\n */\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/controller/datacontroller.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/controller/deletecontent\n */\n\nimport LivePosition from '../model/liveposition';\nimport Position from '../model/position';\nimport Element from '../model/element';\nimport compareArrays from '@ckeditor/ckeditor5-utils/src/comparearrays';\n\n/**\n * Deletes content of the selection and merge siblings. The resulting selection is always collapsed.\n *\n * @param {module:engine/model/selection~Selection} selection Selection of which the content should be deleted.\n * @param {module:engine/model/batch~Batch} batch Batch to which the deltas will be added.\n * @param {Object} [options]\n * @param {Boolean} [options.merge=false] Merge elements after removing the contents of the selection.\n * For example, `<h>x[x</h><p>y]y</p>` will become: `<h>x^y</h>` with the option enabled\n * and: `<h>x^</h><p>y</p>` without it.\n * Note: {@link module:engine/model/schema~Schema#objects object} and {@link module:engine/model/schema~Schema#limits limit}\n * elements will not be merged.\n */\nexport default function deleteContent( selection, batch, options = {} ) {\n\tif ( selection.isCollapsed ) {\n\t\treturn;\n\t}\n\n\tconst selRange = selection.getFirstRange();\n\n\tconst startPos = selRange.start;\n\tconst endPos = LivePosition.createFromPosition( selRange.end );\n\n\t// 1. Remove the contents if there are any.\n\tif ( !selRange.start.isTouching( selRange.end ) ) {\n\t\tbatch.remove( selRange );\n\t}\n\n\t// 2. Merge elements in the right branch to the elements in the left branch.\n\t// The only reasonable (in terms of data and selection correctness) case in which we need to do that is:\n\t//\n\t// <heading type=1>Fo[</heading><paragraph>]ar</paragraph> => <heading type=1>Fo^ar</heading>\n\t//\n\t// However, the algorithm supports also merging deeper structures (up to the depth of the shallower branch),\n\t// as it's hard to imagine what should actually be the default behavior. Usually, specific features will\n\t// want to override that behavior anyway.\n\tif ( options.merge ) {\n\t\tmergeBranches( batch, startPos, endPos );\n\t}\n\n\tselection.collapse( startPos );\n\n\t// 3. Autoparagraphing.\n\t// Check if a text is allowed in the new container. If not, try to create a new paragraph (if it's allowed here).\n\tif ( shouldAutoparagraph( batch.document, startPos ) ) {\n\t\tconst paragraph = new Element( 'paragraph' );\n\t\tbatch.insert( startPos, paragraph );\n\n\t\tselection.collapse( paragraph );\n\t}\n\n\tendPos.detach();\n}\n\nfunction mergeBranches( batch, startPos, endPos ) {\n\tconst endPath = endPos.path;\n\tconst mergeEnd = Math.min( startPos.path.length - 1, endPath.length - 1 );\n\tlet mergeDepth = compareArrays( startPos.path, endPath );\n\n\tif ( typeof mergeDepth == 'number' ) {\n\t\tfor ( ; mergeDepth < mergeEnd; mergeDepth++ ) {\n\t\t\tconst mergePath = startPos.path.slice( 0, mergeDepth );\n\t\t\tmergePath.push( startPos.path[ mergeDepth ] + 1 );\n\n\t\t\tconst mergePos = new Position( endPos.root, mergePath );\n\t\t\tconst previousNode = mergePos.nodeBefore;\n\t\t\tconst nextNode = mergePos.nodeAfter;\n\n\t\t\tif ( !checkCanBeMerged( previousNode ) || !checkCanBeMerged( nextNode ) ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tif ( nextNode.childCount > 0 ) {\n\t\t\t\tbatch.merge( mergePos );\n\t\t\t} else {\n\t\t\t\tbatch.remove( nextNode );\n\t\t\t}\n\t\t}\n\t}\n}\n\nfunction shouldAutoparagraph( doc, position ) {\n\tconst isTextAllowed = doc.schema.check( { name: '$text', inside: position } );\n\tconst isParagraphAllowed = doc.schema.check( { name: 'paragraph', inside: position } );\n\n\treturn !isTextAllowed && isParagraphAllowed;\n}\n\nfunction checkCanBeMerged( element ) {\n\tconst schema = element.document.schema;\n\n\treturn !schema.objects.has( element.name ) && !schema.limits.has( element.name );\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/controller/deletecontent.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/controller/editingcontroller\n */\n\nimport ViewDocument from '../view/document';\nimport Mapper from '../conversion/mapper';\nimport ModelConversionDispatcher from '../conversion/modelconversiondispatcher';\nimport {\n\tinsertText,\n\tremove\n} from '../conversion/model-to-view-converters';\nimport { convertSelectionChange } from '../conversion/view-selection-to-model-converters';\nimport {\n\tconvertRangeSelection,\n\tconvertCollapsedSelection,\n\tclearAttributes,\n\tclearFakeSelection\n} from '../conversion/model-selection-to-view-converters';\n\nimport EmitterMixin from '@ckeditor/ckeditor5-utils/src/emittermixin';\n\n/**\n * Controller for the editing pipeline. The editing pipeline controls {@link ~EditingController#model model} rendering,\n * including selection handling. It also creates {@link ~EditingController#view view document} which build a\n * browser-independent virtualization over the DOM elements. Editing controller also attach default converters.\n */\nexport default class EditingController {\n\t/**\n\t * Creates editing controller instance.\n\t *\n\t * @param {module:engine/model/document~Document} model Document model.\n\t */\n\tconstructor( model ) {\n\t\t/**\n\t\t * Document model.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/model/document~Document}\n\t\t */\n\t\tthis.model = model;\n\n\t\t/**\n\t\t * View document.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/view/document~Document}\n\t\t */\n\t\tthis.view = new ViewDocument();\n\n\t\t/**\n\t\t * Mapper which describes model-view binding.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/conversion/mapper~Mapper}\n\t\t */\n\t\tthis.mapper = new Mapper();\n\n\t\t/**\n\t\t * Model to view conversion dispatcher, which converts changes from the model to\n\t\t * {@link #view editing view}.\n\t\t *\n\t\t * To attach model to view converter to the editing pipeline you need to add lister to this property:\n\t\t *\n\t\t *\t\tediting.modelToView( 'insert:$element', customInsertConverter );\n\t\t *\n\t\t * Or use {@link module:engine/conversion/buildmodelconverter~ModelConverterBuilder}:\n\t\t *\n\t\t *\t\tbuildModelConverter().for( editing.modelToView ).fromAttribute( 'bold' ).toElement( 'b' );\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher} #modelToView\n\t\t */\n\t\tthis.modelToView = new ModelConversionDispatcher( this.model, {\n\t\t\tmapper: this.mapper,\n\t\t\tviewSelection: this.view.selection\n\t\t} );\n\n\t\t/**\n\t\t * Property keeping all listenters attached by controller on other objects, so it can\n\t\t * stop listening on {@link #destroy}.\n\t\t *\n\t\t * @private\n\t\t * @member {utils.EmitterMixin} #_listenter\n\t\t */\n\t\tthis._listener = Object.create( EmitterMixin );\n\n\t\t// Convert changes in model to view.\n\t\tthis._listener.listenTo( this.model, 'change', ( evt, type, changes ) => {\n\t\t\tthis.modelToView.convertChange( type, changes );\n\t\t}, { priority: 'low' } );\n\n\t\t// Convert model selection to view.\n\t\tthis._listener.listenTo( this.model, 'changesDone', () => {\n\t\t\tconst selection = this.model.selection;\n\n\t\t\tthis.modelToView.convertSelection( selection );\n\t\t\tthis.view.render();\n\t\t}, { priority: 'low' } );\n\n\t\t// Convert model markers changes.\n\t\tthis._listener.listenTo( this.model.markers, 'add', ( evt, marker ) => {\n\t\t\tthis.modelToView.convertMarker( 'addMarker', marker.name, marker.getRange() );\n\t\t} );\n\n\t\tthis._listener.listenTo( this.model.markers, 'remove', ( evt, marker ) => {\n\t\t\tthis.modelToView.convertMarker( 'removeMarker', marker.name, marker.getRange() );\n\t\t} );\n\n\t\t// Convert view selection to model.\n\t\tthis._listener.listenTo( this.view, 'selectionChange', convertSelectionChange( this.model, this.mapper ) );\n\n\t\t// Attach default content converters.\n\t\tthis.modelToView.on( 'insert:$text', insertText(), { priority: 'lowest' } );\n\t\tthis.modelToView.on( 'remove', remove(), { priority: 'low' } );\n\n\t\t// Attach default selection converters.\n\t\tthis.modelToView.on( 'selection', clearAttributes(), { priority: 'low' } );\n\t\tthis.modelToView.on( 'selection', clearFakeSelection(), { priority: 'low' } );\n\t\tthis.modelToView.on( 'selection', convertRangeSelection(), { priority: 'low' } );\n\t\tthis.modelToView.on( 'selection', convertCollapsedSelection(), { priority: 'low' } );\n\t}\n\n\t/**\n\t * {@link module:engine/view/document~Document#createRoot Creates} a view root\n\t * and {@link module:engine/conversion/mapper~Mapper#bindElements binds}\n\t * the model root with view root and and view root with DOM element:\n\t *\n\t *\t\tediting.createRoot( document.querySelector( div#editor ) );\n\t *\n\t * If the DOM element is not available at the time you want to create a view root, for instance it is iframe body\n\t * element, it is possible to create view element and bind the DOM element later:\n\t *\n\t *\t\tediting.createRoot( 'body' );\n\t *\t\tediting.view.attachDomRoot( iframe.contentDocument.body );\n\t *\n\t * @param {Element|String} domRoot DOM root element or the name of view root element if the DOM element will be\n\t * attached later.\n\t * @param {String} [name='main'] Root name.\n\t * @returns {module:engine/view/containerelement~ContainerElement} View root element.\n\t */\n\tcreateRoot( domRoot, name = 'main' ) {\n\t\tconst viewRoot = this.view.createRoot( domRoot, name );\n\t\tconst modelRoot = this.model.getRoot( name );\n\n\t\tthis.mapper.bindElements( modelRoot, viewRoot );\n\n\t\treturn viewRoot;\n\t}\n\n\t/**\n\t * Removes all event listeners attached to the `EditingController`. Destroys all objects created\n\t * by `EditingController` that need to be destroyed.\n\t */\n\tdestroy() {\n\t\tthis.view.destroy();\n\t\tthis._listener.stopListening();\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/controller/editingcontroller.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/controller/getselectedcontent\n */\n\nimport DocumentFragment from '../model/documentfragment';\nimport Range from '../model/range';\nimport Position from '../model/position';\nimport Text from '../model/text';\nimport { remove } from '../model/writer';\n\n/**\n * Gets a clone of the selected content.\n *\n * For example, for the following selection:\n *\n *\t\t<p>x</p><quote><p>y</p><h>fir[st</h></quote><p>se]cond</p><p>z</p>\n *\n * It will return a document fragment with such a content:\n *\n *\t\t<quote><h>st</h></quote><p>se</p>\n *\n * @param {module:engine/model/selection~Selection} selection The selection of which content will be returned.\n * @returns {module:engine/model/documentfragment~DocumentFragment}\n */\nexport default function getSelectedContent( selection ) {\n\tconst frag = new DocumentFragment();\n\tconst range = selection.getFirstRange();\n\n\tif ( !range || range.isCollapsed ) {\n\t\treturn frag;\n\t}\n\n\tconst root = range.start.root;\n\tconst commonPath = range.start.getCommonPath( range.end );\n\tconst commonParent = root.getNodeByPath( commonPath );\n\n\t// ## 1st step\n\t//\n\t// First, we'll clone a fragment represented by a minimal flat range\n\t// containing the original range to be cloned.\n\t// E.g. let's consider such a range:\n\t//\n\t// <p>x</p><quote><p>y</p><h>fir[st</h></quote><p>se]cond</p><p>z</p>\n\t//\n\t// A minimal flat range containing this one is:\n\t//\n\t// <p>x</p>[<quote><p>y</p><h>first</h></quote><p>second</p>]<p>z</p>\n\t//\n\t// We can easily clone this structure, preserving e.g. the <quote> element.\n\tlet flatSubtreeRange;\n\n\tif ( range.start.parent == range.end.parent ) {\n\t\t// The original range is flat, so take it.\n\t\tflatSubtreeRange = range;\n\t} else {\n\t\tflatSubtreeRange = Range.createFromParentsAndOffsets(\n\t\t\tcommonParent, range.start.path[ commonPath.length ],\n\t\t\tcommonParent, range.end.path[ commonPath.length ] + 1\n\t\t);\n\t}\n\n\tconst howMany = flatSubtreeRange.end.offset - flatSubtreeRange.start.offset;\n\n\t// Clone the whole contents.\n\tfor ( const item of flatSubtreeRange.getItems( { shallow: true } ) ) {\n\t\tif ( item.is( 'textProxy' ) ) {\n\t\t\tfrag.appendChildren( new Text( item.data, item.getAttributes() ) );\n\t\t} else {\n\t\t\tfrag.appendChildren( item.clone( true ) );\n\t\t}\n\t}\n\n\t// ## 2nd step\n\t//\n\t// If the original range wasn't flat, then we need to remove the excess nodes from the both ends of the cloned fragment.\n\t//\n\t// For example, for the range shown in the 1st step comment, we need to remove these pieces:\n\t//\n\t// <quote>[<p>y</p>]<h>[fir]st</h></quote><p>se[cond]</p>\n\t//\n\t// So this will be the final copied content:\n\t//\n\t// <quote><h>st</h></quote><p>se</p>\n\t//\n\t// In order to do that, we remove content from these two ranges:\n\t//\n\t// [<quote><p>y</p><h>fir]st</h></quote><p>se[cond</p>]\n\tif ( flatSubtreeRange != range ) {\n\t\t// Find the position of the original range in the cloned fragment.\n\t\tconst newRange = range._getTransformedByMove( flatSubtreeRange.start, Position.createAt( frag, 0 ), howMany )[ 0 ];\n\n\t\tconst leftExcessRange = new Range( Position.createAt( frag ), newRange.start );\n\t\tconst rightExcessRange = new Range( newRange.end, Position.createAt( frag, 'end' ) );\n\n\t\tremoveRangeContent( rightExcessRange );\n\t\tremoveRangeContent( leftExcessRange );\n\t}\n\n\treturn frag;\n}\n\n// After https://github.com/ckeditor/ckeditor5-engine/issues/690 is fixed,\n// this function will, most likely, be able to rewritten using getMinimalFlatRanges().\nfunction removeRangeContent( range ) {\n\tconst parentsToCheck = [];\n\n\tArray.from( range.getItems( { direction: 'backward' } ) )\n\t\t// We should better store ranges because text proxies will lose integrity\n\t\t// with the text nodes when we'll start removing content.\n\t\t.map( item => Range.createOn( item ) )\n\t\t// Filter only these items which are fully contained in the passed range.\n\t\t//\n\t\t// E.g. for the following range: [<quote><p>y</p><h>fir]st</h>\n\t\t// the walker will return the entire <h> element, when only the \"fir\" item inside it is fully contained.\n\t\t.filter( itemRange => {\n\t\t\t// We should be able to use Range.containsRange, but https://github.com/ckeditor/ckeditor5-engine/issues/691.\n\t\t\tconst contained =\n\t\t\t\t( itemRange.start.isAfter( range.start ) || itemRange.start.isEqual( range.start ) ) &&\n\t\t\t\t( itemRange.end.isBefore( range.end ) || itemRange.end.isEqual( range.end ) );\n\n\t\t\treturn contained;\n\t\t} )\n\t\t.forEach( itemRange => {\n\t\t\tparentsToCheck.push( itemRange.start.parent );\n\n\t\t\tremove( itemRange );\n\t\t} );\n\n\t// Remove ancestors of the removed items if they turned to be empty now\n\t// (their whole content was contained in the range).\n\tparentsToCheck.forEach( parentToCheck => {\n\t\tlet parent = parentToCheck;\n\n\t\twhile ( parent.parent && parent.isEmpty ) {\n\t\t\tconst removeRange = Range.createOn( parent );\n\n\t\t\tparent = parent.parent;\n\n\t\t\tremove( removeRange );\n\t\t}\n\t} );\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/controller/getselectedcontent.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/controller/insertcontent\n */\n\nimport Position from '../model/position';\nimport LivePosition from '../model/liveposition';\nimport Element from '../model/element';\nimport Range from '../model/range';\nimport log from '@ckeditor/ckeditor5-utils/src/log';\n\n/**\n * Inserts content into the editor (specified selection) as one would expect the paste\n * functionality to work.\n *\n * **Note:** Use {@link module:engine/controller/datacontroller~DataController#insertContent} instead of this function.\n * This function is only exposed to be reusable in algorithms\n * which change the {@link module:engine/controller/datacontroller~DataController#insertContent}\n * method's behavior.\n *\n * @param {module:engine/controller/datacontroller~DataController} dataController The data controller in context of which the insertion\n * should be performed.\n * @param {module:engine/model/documentfragment~DocumentFragment} content The content to insert.\n * @param {module:engine/model/selection~Selection} selection Selection into which the content should be inserted.\n * @param {module:engine/model/batch~Batch} [batch] Batch to which deltas will be added. If not specified, then\n * changes will be added to a new batch.\n */\nexport default function insertContent( dataController, content, selection, batch ) {\n\tif ( !batch ) {\n\t\tbatch = dataController.model.batch();\n\t}\n\n\tif ( !selection.isCollapsed ) {\n\t\tdataController.deleteContent( selection, batch, {\n\t\t\tmerge: true\n\t\t} );\n\t}\n\n\tconst insertion = new Insertion( dataController, batch, selection.anchor );\n\n\tinsertion.handleNodes( content.getChildren(), {\n\t\t// The set of children being inserted is the only set in this context\n\t\t// so it's the first and last (it's a hack ;)).\n\t\tisFirst: true,\n\t\tisLast: true\n\t} );\n\n\tconst newRange = insertion.getSelectionRange();\n\n\t/* istanbul ignore else */\n\tif ( newRange ) {\n\t\tselection.setRanges( [ newRange ] );\n\t} else {\n\t\t// We are not testing else because it's a safe check for unpredictable edge cases:\n\t\t// an insertion without proper range to select.\n\n\t\t/**\n\t\t * Cannot determine a proper selection range after insertion.\n\t\t *\n\t\t * @warning insertcontent-no-range\n\t\t */\n\t\tlog.warn( 'insertcontent-no-range: Cannot determine a proper selection range after insertion.' );\n\t}\n}\n\n/**\n * Utility class for performing content insertion.\n *\n * @private\n */\nclass Insertion {\n\tconstructor( dataController, batch, position ) {\n\t\t/**\n\t\t * The data controller in context of which the insertion should be performed.\n\t\t *\n\t\t * @member {module:engine/controller/datacontroller~DataController} #dataController\n\t\t */\n\t\tthis.dataController = dataController;\n\n\t\t/**\n\t\t * Batch to which deltas will be added.\n\t\t *\n\t\t * @member {module:engine/controller/batch~Batch} #batch\n\t\t */\n\t\tthis.batch = batch;\n\n\t\t/**\n\t\t * The position at which (or near which) the next node will be inserted.\n\t\t *\n\t\t * @member {module:engine/model/position~Position} #position\n\t\t */\n\t\tthis.position = position;\n\n\t\t/**\n\t\t * Elements with which the inserted elements can be merged.\n\t\t *\n\t\t *\t\t<p>x^</p><p>y</p> + <p>z</p> (can merge to <p>x</p>)\n\t\t *\t\t<p>x</p><p>^y</p> + <p>z</p> (can merge to <p>y</p>)\n\t\t *\t\t<p>x^y</p> + <p>z</p> (can merge to <p>xy</p> which will be split during the action,\n\t\t *\t\t\t\t\t\t\t\tso both its pieces will be added to this set)\n\t\t *\n\t\t *\n\t\t * @member {Set} #canMergeWith\n\t\t */\n\t\tthis.canMergeWith = new Set( [ this.position.parent ] );\n\n\t\t/**\n\t\t * Schema of the model.\n\t\t *\n\t\t * @member {module:engine/model/schema~Schema} #schema\n\t\t */\n\t\tthis.schema = dataController.model.schema;\n\t}\n\n\t/**\n\t * Handles insertion of a set of nodes.\n\t *\n\t * @param {Iterable.<module:engine/model/node~Node>} nodes Nodes to insert.\n\t * @param {Object} parentContext Context in which parent of these nodes was supposed to be inserted.\n\t * If the parent context is passed it means that the parent element was stripped (was not allowed).\n\t */\n\thandleNodes( nodes, parentContext ) {\n\t\tnodes = Array.from( nodes );\n\n\t\tfor ( let i = 0; i < nodes.length; i++ ) {\n\t\t\tconst node = nodes[ i ].clone();\n\n\t\t\tthis._handleNode( node, {\n\t\t\t\tisFirst: i === 0 && parentContext.isFirst,\n\t\t\t\tisLast: ( i === ( nodes.length - 1 ) ) && parentContext.isLast\n\t\t\t} );\n\t\t}\n\t}\n\n\t/**\n\t * Returns range to be selected after insertion.\n\t * Returns null if there is no valid range to select after insertion.\n\t *\n\t * @returns {module:engine/model/range~Range|null}\n\t */\n\tgetSelectionRange() {\n\t\tif ( this.nodeToSelect ) {\n\t\t\treturn Range.createOn( this.nodeToSelect );\n\t\t}\n\n\t\treturn this.dataController.model.getNearestSelectionRange( this.position );\n\t}\n\n\t/**\n\t * Handles insertion of a single node.\n\t *\n\t * @param {module:engine/model/node~Node} node\n\t * @param {Object} context\n\t * @param {Boolean} context.isFirst Whether the given node is the first one in the content to be inserted.\n\t * @param {Boolean} context.isLast Whether the given node is the last one in the content to be inserted.\n\t */\n\t_handleNode( node, context ) {\n\t\t// Let's handle object in a special way.\n\t\t// * They should never be merged with other elements.\n\t\t// * If they are not allowed in any of the selection ancestors, they could be either autoparagraphed or totally removed.\n\t\tif ( this._checkIsObject( node ) ) {\n\t\t\tthis._handleObject( node, context );\n\n\t\t\treturn;\n\t\t}\n\n\t\t// Try to find a place for the given node.\n\t\t// Split the position.parent's branch up to a point where the node can be inserted.\n\t\t// If it isn't allowed in the whole branch, then of course don't split anything.\n\t\tconst isAllowed = this._checkAndSplitToAllowedPosition( node, context );\n\n\t\tif ( !isAllowed ) {\n\t\t\tthis._handleDisallowedNode( node, context );\n\n\t\t\treturn;\n\t\t}\n\n\t\tthis._insert( node );\n\n\t\t// After the node was inserted we may try to merge it with its siblings.\n\t\t// This should happen only if it was the first and/or last of the nodes (so only with boundary nodes)\n\t\t// and only if the selection was in those elements initially.\n\t\t//\n\t\t// E.g.:\n\t\t// <p>x^</p> + <p>y</p> => <p>x</p><p>y</p> => <p>xy[]</p>\n\t\t// and:\n\t\t// <p>x^y</p> + <p>z</p> => <p>x</p>^<p>y</p> + <p>z</p> => <p>x</p><p>y</p><p>z</p> => <p>xy[]z</p>\n\t\t// but:\n\t\t// <p>x</p><p>^</p><p>z</p> + <p>y</p> => <p>x</p><p>y</p><p>z</p> (no merging)\n\t\t// <p>x</p>[<img>]<p>z</p> + <p>y</p> => <p>x</p><p>y</p><p>z</p> (no merging, note: after running deletetContents\n\t\t//\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t it's exactly the same case as above)\n\t\tthis._mergeSiblingsOf( node, context );\n\t}\n\n\t/**\n\t * @param {module:engine/model/element~Element} node The object element.\n\t * @param {Object} context\n\t */\n\t_handleObject( node, context ) {\n\t\t// Try finding it a place in the tree.\n\t\tif ( this._checkAndSplitToAllowedPosition( node ) ) {\n\t\t\tthis._insert( node );\n\t\t}\n\t\t// Try autoparagraphing.\n\t\telse {\n\t\t\tthis._tryAutoparagraphing( node, context );\n\t\t}\n\t}\n\n\t/**\n\t * @param {module:engine/model/node~Node} node The disallowed node which needs to be handled.\n\t * @param {Object} context\n\t */\n\t_handleDisallowedNode( node, context ) {\n\t\t// Try inserting its children (strip the parent).\n\t\tif ( node.is( 'element' ) ) {\n\t\t\tthis.handleNodes( node.getChildren(), context );\n\t\t}\n\t\t// Try autoparagraphing.\n\t\telse {\n\t\t\tthis._tryAutoparagraphing( node, context );\n\t\t}\n\t}\n\n\t/**\n\t * @param {module:engine/model/node~Node} node The node to insert.\n\t */\n\t_insert( node ) {\n\t\t/* istanbul ignore if */\n\t\tif ( !this._checkIsAllowed( node, [ this.position.parent ] ) ) {\n\t\t\t// Algorithm's correctness check. We should never end up here but it's good to know that we did.\n\t\t\t// Note that it would often be a silent issue if we insert node in a place where it's not allowed.\n\t\t\tlog.error(\n\t\t\t\t'insertcontent-wrong-position: The node cannot be inserted on the given position.',\n\t\t\t\t{ node, position: this.position }\n\t\t\t);\n\n\t\t\treturn;\n\t\t}\n\n\t\tconst livePos = LivePosition.createFromPosition( this.position );\n\n\t\tthis.batch.insert( this.position, node );\n\n\t\tthis.position = Position.createFromPosition( livePos );\n\t\tlivePos.detach();\n\n\t\t// The last inserted object should be selected because we can't put a collapsed selection after it.\n\t\tif ( this._checkIsObject( node ) && !this.schema.check( { name: '$text', inside: [ this.position.parent ] } ) ) {\n\t\t\tthis.nodeToSelect = node;\n\t\t} else {\n\t\t\tthis.nodeToSelect = null;\n\t\t}\n\t}\n\n\t/**\n\t * @param {module:engine/model/node~Node} node The node which could potentially be merged.\n\t * @param {Object} context\n\t */\n\t_mergeSiblingsOf( node, context ) {\n\t\tif ( !( node instanceof Element ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst mergeLeft = context.isFirst && ( node.previousSibling instanceof Element ) && this.canMergeWith.has( node.previousSibling );\n\t\tconst mergeRight = context.isLast && ( node.nextSibling instanceof Element ) && this.canMergeWith.has( node.nextSibling );\n\t\tconst mergePosLeft = LivePosition.createBefore( node );\n\t\tconst mergePosRight = LivePosition.createAfter( node );\n\n\t\tif ( mergeLeft ) {\n\t\t\tconst position = LivePosition.createFromPosition( this.position );\n\n\t\t\tthis.batch.merge( mergePosLeft );\n\n\t\t\tthis.position = Position.createFromPosition( position );\n\t\t\tposition.detach();\n\t\t}\n\n\t\tif ( mergeRight ) {\n\t\t\tlet position;\n\n\t\t\t/* istanbul ignore if */\n\t\t\tif ( !this.position.isEqual( mergePosRight ) ) {\n\t\t\t\t// Algorithm's correctness check. We should never end up here but it's good to know that we did.\n\t\t\t\t// At this point the insertion position should be after the node we'll merge. If it isn't,\n\t\t\t\t// it should need to be secured as in the left merge case.\n\t\t\t\tlog.error( 'insertcontent-wrong-position-on-merge: The insertion position should equal the merge position' );\n\t\t\t}\n\n\t\t\t// Move the position to the previous node, so it isn't moved to the graveyard on merge.\n\t\t\t// <p>x</p>[]<p>y</p> => <p>x[]</p><p>y</p>\n\t\t\tthis.position = Position.createAt( mergePosRight.nodeBefore, 'end' );\n\n\t\t\t// OK:  <p>xx[]</p> + <p>yy</p> => <p>xx[]yy</p> (when sticks to previous)\n\t\t\t// NOK: <p>xx[]</p> + <p>yy</p> => <p>xxyy[]</p> (when sticks to next)\n\t\t\tposition = new LivePosition( this.position.root, this.position.path, 'sticksToPrevious' );\n\n\t\t\tthis.batch.merge( mergePosRight );\n\n\t\t\tthis.position = Position.createFromPosition( position );\n\t\t\tposition.detach();\n\t\t}\n\n\t\tmergePosLeft.detach();\n\t\tmergePosRight.detach();\n\t}\n\n\t/**\n\t * Tries wrapping the node in a new paragraph and inserting it this way.\n\t *\n\t * @param {module:engine/model/node~Node} node The node which needs to be autoparagraphed.\n\t * @param {Object} context\n\t */\n\t_tryAutoparagraphing( node, context ) {\n\t\tconst paragraph = new Element( 'paragraph' );\n\n\t\t// Do not autoparagraph if the paragraph won't be allowed there,\n\t\t// cause that would lead to an infinite loop. The paragraph would be rejected in\n\t\t// the next _handleNode() call and we'd be here again.\n\t\tif ( this._getAllowedIn( paragraph, this.position.parent ) && this._checkIsAllowed( node, [ paragraph ] ) ) {\n\t\t\tparagraph.appendChildren( node );\n\n\t\t\tthis._handleNode( paragraph, context );\n\t\t}\n\t}\n\n\t/**\n\t * @param {module:engine/model/node~Node} node\n\t * @returns {Boolean} Whether an allowed position was found.\n\t * `false` is returned if the node isn't allowed at any position up in the tree, `true` if was.\n\t */\n\t_checkAndSplitToAllowedPosition( node ) {\n\t\tconst allowedIn = this._getAllowedIn( node, this.position.parent );\n\n\t\tif ( !allowedIn ) {\n\t\t\treturn false;\n\t\t}\n\n\t\twhile ( allowedIn != this.position.parent ) {\n\t\t\t// If a parent which we'd need to leave is a limit element, break.\n\t\t\tif ( this.schema.limits.has( this.position.parent.name ) ) {\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\tif ( this.position.isAtStart ) {\n\t\t\t\tconst parent = this.position.parent;\n\t\t\t\tthis.position = Position.createBefore( parent );\n\n\t\t\t\t// Special case – parent is empty (<p>^</p>) so isAtStart == isAtEnd == true.\n\t\t\t\t// We can remove the element after moving selection out of it.\n\t\t\t\tif ( parent.isEmpty ) {\n\t\t\t\t\tthis.batch.remove( parent );\n\t\t\t\t}\n\t\t\t} else if ( this.position.isAtEnd ) {\n\t\t\t\tthis.position = Position.createAfter( this.position.parent );\n\t\t\t} else {\n\t\t\t\tconst tempPos = Position.createAfter( this.position.parent );\n\n\t\t\t\tthis.batch.split( this.position );\n\n\t\t\t\tthis.position = tempPos;\n\n\t\t\t\tthis.canMergeWith.add( this.position.nodeAfter );\n\t\t\t}\n\t\t}\n\n\t\treturn true;\n\t}\n\n\t/**\n\t * Gets the element in which the given node is allowed. It checks the passed element and all its ancestors.\n\t *\n\t * @param {module:engine/model/node~Node} node The node to check.\n\t * @param {module:engine/model/element~Element} element The element in which the node's correctness should be checked.\n\t * @returns {module:engine/model/element~Element|null}\n\t */\n\t_getAllowedIn( node, element ) {\n\t\tif ( this._checkIsAllowed( node, [ element ] ) ) {\n\t\t\treturn element;\n\t\t}\n\n\t\tif ( element.parent ) {\n\t\t\treturn this._getAllowedIn( node, element.parent );\n\t\t}\n\n\t\treturn null;\n\t}\n\n\t/**\n\t * Check whether the given node is allowed in the specified schema path.\n\t *\n\t * @param {module:engine/model/node~Node} node\n\t * @param {module:engine/model/schema~SchemaPath} path\n\t */\n\t_checkIsAllowed( node, path ) {\n\t\treturn this.schema.check( {\n\t\t\tname: this._getNodeSchemaName( node ),\n\t\t\tattributes: Array.from( node.getAttributeKeys() ),\n\t\t\tinside: path\n\t\t} );\n\t}\n\n\t/**\n\t * Checks wether according to the schema this is an object type element.\n\t *\n\t * @param {module:engine/model/node~Node} node The node to check.\n\t */\n\t_checkIsObject( node ) {\n\t\treturn this.schema.objects.has( this._getNodeSchemaName( node ) );\n\t}\n\n\t/**\n\t * Gets a name under which we should check this node in the schema.\n\t *\n\t * @param {module:engine/model/node~Node} node The node.\n\t */\n\t_getNodeSchemaName( node ) {\n\t\tif ( node.is( 'text' ) ) {\n\t\t\treturn '$text';\n\t\t}\n\n\t\treturn node.name;\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/controller/insertcontent.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/controller/modifyselection\n */\n\nimport Position from '../model/position';\nimport TreeWalker from '../model/treewalker';\nimport Range from '../model/range';\nimport { isInsideSurrogatePair, isInsideCombinedSymbol } from '@ckeditor/ckeditor5-utils/src/unicode';\n\n/**\n * Modifies the selection. Currently, the supported modifications are:\n *\n * * Extending. The selection focus is moved in the specified `options.direction` with a step specified in `options.unit`.\n * Possible values for `unit` are:\n *  * `'character'` (default) - moves selection by one user-perceived character. In most cases this means moving by one\n *  character in `String` sense. However, unicode also defines \"combing marks\". These are special symbols, that combines\n *  with a symbol before it (\"base character\") to create one user-perceived character. For example, `q̣̇` is a normal\n *  letter `q` with two \"combining marks\": upper dot (`Ux0307`) and lower dot (`Ux0323`). For most actions, i.e. extending\n *  selection by one position, it is correct to include both \"base character\" and all of it's \"combining marks\". That is\n *  why `'character'` value is most natural and common method of modifying selection.\n *  * `'codePoint'` - moves selection by one unicode code point. In contrary to, `'character'` unit, this will insert\n *  selection between \"base character\" and \"combining mark\", because \"combining marks\" have their own unicode code points.\n *  However, for technical reasons, unicode code points with values above `UxFFFF` are represented in native `String` by\n *  two characters, called \"surrogate pairs\". Halves of \"surrogate pairs\" have a meaning only when placed next to each other.\n *  For example `𨭎` is represented in `String` by `\\uD862\\uDF4E`. Both `\\uD862` and `\\uDF4E` do not have any meaning\n *  outside the pair (are rendered as ? when alone). Position between them would be incorrect. In this case, selection\n *  extension will include whole \"surrogate pair\".\n *\n * **Note:** if you extend a forward selection in a backward direction you will in fact shrink it.\n *\n * @param {module:engine/controller/datacontroller~DataController} dataController The data controller in context of which\n * the selection modification should be performed.\n * @param {module:engine/model/selection~Selection} selection The selection to modify.\n * @param {Object} [options]\n * @param {'forward'|'backward'} [options.direction='forward'] The direction in which the selection should be modified.\n * @param {'character'|'codePoint'} [options.unit='character'] The unit by which selection should be modified.\n */\nexport default function modifySelection( dataController, selection, options = {} ) {\n\tconst schema = dataController.model.schema;\n\tconst isForward = options.direction != 'backward';\n\tconst unit = options.unit ? options.unit : 'character';\n\n\tconst focus = selection.focus;\n\tconst walker = new TreeWalker( {\n\t\tboundaries: getSearchRange( focus, isForward ),\n\t\tsingleCharacters: true,\n\t\tdirection: isForward ? 'forward' : 'backward'\n\t} );\n\n\tconst data = { walker, schema, isForward, unit };\n\n\tlet next;\n\n\twhile ( ( next = walker.next() ) ) {\n\t\tif ( next.done ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst position = tryExtendingTo( data, next.value );\n\n\t\tif ( position ) {\n\t\t\tselection.setFocus( position );\n\n\t\t\treturn;\n\t\t}\n\t}\n}\n\n// Checks whether the selection can be extended to the the walker's next value (next position).\nfunction tryExtendingTo( data, value ) {\n\t// If found text, we can certainly put the focus in it. Let's just find a correct position\n\t// based on the unit.\n\tif ( value.type == 'text' ) {\n\t\treturn getCorrectPosition( data.walker, data.unit );\n\t}\n\n\t// Entering an element.\n\tif ( value.type == ( data.isForward ? 'elementStart' : 'elementEnd' ) ) {\n\t\t// If it's an object, we can select it now.\n\t\tif ( data.schema.objects.has( value.item.name ) ) {\n\t\t\treturn Position.createAt( value.item, data.isForward ? 'after' : 'before' );\n\t\t}\n\n\t\t// If text allowed on this position, extend to this place.\n\t\tif ( data.schema.check( { name: '$text', inside: value.nextPosition } ) ) {\n\t\t\treturn value.nextPosition;\n\t\t}\n\t}\n\t// Leaving an element.\n\telse {\n\t\t// If leaving a limit element, stop.\n\t\tif ( data.schema.limits.has( value.item.name ) ) {\n\t\t\t// NOTE: Fast-forward the walker until the end.\n\t\t\tdata.walker.skip( () => true );\n\n\t\t\treturn;\n\t\t}\n\n\t\t// If text allowed on this position, extend to this place.\n\t\tif ( data.schema.check( { name: '$text', inside: value.nextPosition } ) ) {\n\t\t\treturn value.nextPosition;\n\t\t}\n\t}\n}\n\n// Finds a correct position by walking in a text node and checking whether selection can be extended to given position\n// or should be extended further.\nfunction getCorrectPosition( walker, unit ) {\n\tconst textNode = walker.position.textNode;\n\n\tif ( textNode ) {\n\t\tconst data = textNode.data;\n\t\tlet offset = walker.position.offset - textNode.startOffset;\n\n\t\twhile ( isInsideSurrogatePair( data, offset ) || ( unit == 'character' && isInsideCombinedSymbol( data, offset ) ) ) {\n\t\t\twalker.next();\n\n\t\t\toffset = walker.position.offset - textNode.startOffset;\n\t\t}\n\t}\n\n\treturn walker.position;\n}\n\nfunction getSearchRange( start, isForward ) {\n\tconst root = start.root;\n\tconst searchEnd = Position.createAt( root, isForward ? 'end' : 0 );\n\n\tif ( isForward ) {\n\t\treturn new Range( start, searchEnd );\n\t} else {\n\t\treturn new Range( searchEnd, start );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/controller/modifyselection.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/conversion/modelconsumable\n */\n\nimport TextProxy from '../model/textproxy';\n\n/**\n * Manages a list of consumable values for {@link module:engine/model/item~Item model items}.\n *\n * Consumables are various aspects of the model. A model item can be broken down into singular properties that might be\n * taken into consideration when converting that item.\n *\n * `ModelConsumable` is used by {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher} while analyzing changed\n * parts of {@link module:engine/model/document~Document the document}. The added / changed / removed model items are broken down\n * into singular properties (the item itself and it's attributes). All those parts are saved in `ModelConsumable`. Then,\n * during conversion, when given part of model item is converted (i.e. the view element has been inserted into the view,\n * but without attributes), consumable value is removed from `ModelConsumable`.\n *\n * For model items, `ModelConsumable` stores consumable values of one of following types: `insert`, `addAttribute:<attributeKey>`,\n * `changeAttribute:<attributeKey>`, `removeAttribute:<attributeKey>`.\n *\n * In most cases, it is enough to let {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher}\n * gather consumable values, so there is no need to use\n * @link module:engine/conversion/modelconsumable~ModelConsumable#add add method} directly.\n * However, it is important to understand how consumable values can be\n * {@link module:engine/conversion/modelconsumable~ModelConsumable#consume consumed}.\n * See {@link module:engine/conversion/model-selection-to-view-converters default model to view converters} for more information.\n *\n * Keep in mind, that one conversion event may have multiple callbacks (converters) attached to it. Each of those is\n * able to convert one or more parts of the model. However, when one of those callbacks actually converts\n * something, other should not, because they would duplicate the results. Using `ModelConsumable` helps avoiding\n * this situation, because callbacks should only convert those values, which were not yet consumed from `ModelConsumable`.\n *\n * Consuming multiple values in a single callback:\n *\n *\t\t// Converter for custom `image` element that might have a `caption` element inside which changes\n *\t\t// how the image is displayed in the view:\n *\t\t//\n *\t\t// Model:\n *\t\t//\n *\t\t// [image]\n *\t\t//   └─ [caption]\n *\t\t//       └─ foo\n *\t\t//\n *\t\t// View:\n *\t\t//\n *\t\t// <figure>\n *\t\t//   ├─ <img />\n *\t\t//   └─ <caption>\n *\t\t//       └─ foo\n *\t\tmodelConversionDispatcher.on( 'insert:image', ( evt, data, consumable, conversionApi ) => {\n *\t\t\t// First, consume the `image` element.\n *\t\t\tconsumable.consume( data.item, 'insert' );\n *\n *\t\t\t// Just create normal image element for the view.\n *\t\t\t// Maybe it will be \"decorated\" later.\n *\t\t\tconst viewImage = new ViewElement( 'img' );\n *\t\t\tconst insertPosition = conversionApi.mapper.toViewPosition( data.range.start );\n *\n *\t\t\t// Check if the `image` element has children.\n *\t\t\tif ( data.item.childCount > 0 ) {\n *\t\t\t\tconst modelCaption = data.item.getChild( 0 );\n *\n *\t\t\t\t// `modelCaption` insertion change is consumed from consumable values.\n *\t\t\t\t// It will not be converted by other converters, but it's children (probably some text) will be.\n *\t\t\t\t// Through mapping, converters for text will know where to insert contents of `modelCaption`.\n *\t\t\t\tif ( consumable.consume( modelCaption, 'insert' ) ) {\n *\t\t\t\t\tconst viewCaption = new ViewElement( 'figcaption' );\n *\n *\t\t\t\t\tconst viewImageHolder = new ViewElement( 'figure', null, [ viewImage, viewCaption ] );\n *\n *\t\t\t\t\tconversionApi.mapper.bindElements( modelCaption, viewCaption );\n *\t\t\t\t\tconversionApi.mapper.bindElements( data.item, viewImageHolder );\n *\t\t\t\t\tviewWriter.insert( insertPosition, viewImageHolder );\n *\t\t\t\t}\n *\t\t\t} else {\n *\t\t\t\tconversionApi.mapper.bindElements( data.item, viewImage );\n *\t\t\t\tviewWriter.insert( insertPosition, viewImage );\n *\t\t\t}\n *\n *\t\t\tevt.stop();\n *\t\t} );\n */\nexport default class ModelConsumable {\n\t/**\n\t * Creates an empty consumables list.\n\t */\n\tconstructor() {\n\t\t/**\n\t\t * Contains list of consumable values.\n\t\t *\n\t\t * @private\n\t\t * @member {Map} module:engine/conversion/modelconsumable~ModelConsumable#_consumable\n\t\t */\n\t\tthis._consumable = new Map();\n\n\t\t/**\n\t\t * For each {@link module:engine/model/textproxy~TextProxy} added to `ModelConsumable`, this registry holds parent\n\t\t * of that `TextProxy` and start and end indices of that `TextProxy`. This allows identification of `TextProxy`\n\t\t * instances that points to the same part of the model but are different instances. Each distinct `TextProxy`\n\t\t * is given unique `Symbol` which is then registered as consumable. This process is transparent for `ModelConsumable`\n\t\t * API user because whenever `TextProxy` is added, tested, consumed or reverted, internal mechanisms of\n\t\t * `ModelConsumable` translates `TextProxy` to that unique `Symbol`.\n\t\t *\n\t\t * @private\n\t\t * @member {Map} module:engine/conversion/modelconsumable~ModelConsumable#_textProxyRegistry\n\t\t */\n\t\tthis._textProxyRegistry = new Map();\n\t}\n\n\t/**\n\t * Adds a consumable value to the consumables list and links it with given model item.\n\t *\n\t *\t\tmodelConsumable.add( modelElement, 'insert' ); // Add `modelElement` insertion change to consumable values.\n\t *\t\tmodelConsumable.add( modelElement, 'addAttribute:bold' ); // Add `bold` attribute insertion on `modelElement` change.\n\t *\t\tmodelConsumable.add( modelElement, 'removeAttribute:bold' ); // Add `bold` attribute removal on `modelElement` change.\n\t *\t\tmodelConsumable.add( modelSelection, 'selection' ); // Add `modelSelection` to consumable values.\n\t *\t\tmodelConsumable.add( modelSelection, 'selectionAttribute:bold' ); // Add `bold` attribute on `modelSelection` to consumables.\n\t *\t\tmodelConsumable.add( modelRange, 'range' ); // Add `modelRange` to consumable values.\n\t *\n\t * @param {module:engine/model/item~Item|module:engine/model/selection~Selection|module:engine/model/range~Range} item\n\t * Model item, range or selection that has the consumable.\n\t * @param {String} type Consumable type.\n\t */\n\tadd( item, type ) {\n\t\tif ( item instanceof TextProxy ) {\n\t\t\titem = this._getSymbolForTextProxy( item );\n\t\t}\n\n\t\tif ( !this._consumable.has( item ) ) {\n\t\t\tthis._consumable.set( item, new Map() );\n\t\t}\n\n\t\tthis._consumable.get( item ).set( type, true );\n\t}\n\n\t/**\n\t * Removes given consumable value from given model item.\n\t *\n\t *\t\tmodelConsumable.consume( modelElement, 'insert' ); // Remove `modelElement` insertion change from consumable values.\n\t *\t\tmodelConsumable.consume( modelElement, 'addAttribute:bold' ); // Remove `bold` attribute insertion on `modelElement` change.\n\t *\t\tmodelConsumable.consume( modelElement, 'removeAttribute:bold' ); // Remove `bold` attribute removal on `modelElement` change.\n\t *\t\tmodelConsumable.consume( modelSelection, 'selection' ); // Remove `modelSelection` from consumable values.\n\t *\t\tmodelConsumable.consume( modelSelection, 'selectionAttribute:bold' ); // Remove `bold` on `modelSelection` from consumables.\n\t *\t\tmodelConsumable.consume( modelRange, 'range' ); // Remove 'modelRange' from consumable values.\n\t *\n\t * @param {module:engine/model/item~Item|module:engine/model/selection~Selection|module:engine/model/range~Range} item\n\t * Model item, range or selection from which consumable will be consumed.\n\t * @param {String} type Consumable type.\n\t * @returns {Boolean} `true` if consumable value was available and was consumed, `false` otherwise.\n\t */\n\tconsume( item, type ) {\n\t\tif ( item instanceof TextProxy ) {\n\t\t\titem = this._getSymbolForTextProxy( item );\n\t\t}\n\n\t\tif ( this.test( item, type ) ) {\n\t\t\tthis._consumable.get( item ).set( type, false );\n\n\t\t\treturn true;\n\t\t} else {\n\t\t\treturn false;\n\t\t}\n\t}\n\n\t/**\n\t * Tests whether there is a consumable value of given type connected with given model item.\n\t *\n\t *\t\tmodelConsumable.test( modelElement, 'insert' ); // Check for `modelElement` insertion change.\n\t *\t\tmodelConsumable.test( modelElement, 'addAttribute:bold' ); // Check for `bold` attribute insertion on `modelElement` change.\n\t *\t\tmodelConsumable.test( modelElement, 'removeAttribute:bold' ); // Check for `bold` attribute removal on `modelElement` change.\n\t *\t\tmodelConsumable.test( modelSelection, 'selection' ); // Check if `modelSelection` is consumable.\n\t *\t\tmodelConsumable.test( modelSelection, 'selectionAttribute:bold' ); // Check if `bold` on `modelSelection` is consumable.\n\t *\t\tmodelConsumable.test( modelRange, 'range' ); // Check if `modelRange` is consumable.\n\t *\n\t * @param {module:engine/model/item~Item|module:engine/model/selection~Selection|module:engine/model/range~Range} item\n\t * Model item, range or selection to be tested.\n\t * @param {String} type Consumable type.\n\t * @returns {null|Boolean} `null` if such consumable was never added, `false` if the consumable values was\n\t * already consumed or `true` if it was added and not consumed yet.\n\t */\n\ttest( item, type ) {\n\t\tif ( item instanceof TextProxy ) {\n\t\t\titem = this._getSymbolForTextProxy( item );\n\t\t}\n\n\t\tconst itemConsumables = this._consumable.get( item );\n\n\t\tif ( itemConsumables === undefined ) {\n\t\t\treturn null;\n\t\t}\n\n\t\tconst value = itemConsumables.get( type );\n\n\t\tif ( value === undefined ) {\n\t\t\treturn null;\n\t\t}\n\n\t\treturn value;\n\t}\n\n\t/**\n\t * Reverts consuming of consumable value.\n\t *\n\t *\t\tmodelConsumable.revert( modelElement, 'insert' ); // Revert consuming `modelElement` insertion change.\n\t *\t\tmodelConsumable.revert( modelElement, 'addAttribute:bold' ); // Revert consuming `bold` attribute insert from `modelElement`.\n\t *\t\tmodelConsumable.revert( modelElement, 'removeAttribute:bold' ); // Revert consuming `bold` attribute remove from `modelElement`.\n\t *\t\tmodelConsumable.revert( modelSelection, 'selection' ); // Revert consuming `modelSelection`.\n\t *\t\tmodelConsumable.revert( modelSelection, 'selectionAttribute:bold' ); // Revert consuming `bold` from `modelSelection`.\n\t *\t\tmodelConsumable.revert( modelRange, 'range' ); // Revert consuming `modelRange`.\n\t *\n\t * @param {module:engine/model/item~Item|module:engine/model/selection~Selection|module:engine/model/range~Range} item\n\t * Model item, range or selection to be reverted.\n\t * @param {String} type Consumable type.\n\t * @returns {null|Boolean} `true` if consumable has been reversed, `false` otherwise. `null` if the consumable has\n\t * never been added.\n\t */\n\trevert( item, type ) {\n\t\tif ( item instanceof TextProxy ) {\n\t\t\titem = this._getSymbolForTextProxy( item );\n\t\t}\n\n\t\tconst test = this.test( item, type );\n\n\t\tif ( test === false ) {\n\t\t\tthis._consumable.get( item ).set( type, true );\n\n\t\t\treturn true;\n\t\t} else if ( test === true ) {\n\t\t\treturn false;\n\t\t}\n\n\t\treturn null;\n\t}\n\n\t/**\n\t * Gets a unique symbol for passed {@link module:engine/model/textproxy~TextProxy} instance. All `TextProxy` instances that\n\t * have same parent, same start index and same end index will get the same symbol.\n\t *\n\t * Used internally to correctly consume `TextProxy` instances.\n\t *\n\t * @private\n\t * @param {module:engine/model/textproxy~TextProxy} textProxy `TextProxy` instance to get a symbol for.\n\t * @returns {Symbol} Symbol representing all equal instances of `TextProxy`.\n\t */\n\t_getSymbolForTextProxy( textProxy ) {\n\t\tlet symbol = null;\n\n\t\tconst startMap = this._textProxyRegistry.get( textProxy.startOffset );\n\n\t\tif ( startMap ) {\n\t\t\tconst endMap = startMap.get( textProxy.endOffset );\n\n\t\t\tif ( endMap ) {\n\t\t\t\tsymbol = endMap.get( textProxy.parent );\n\t\t\t}\n\t\t}\n\n\t\tif ( !symbol ) {\n\t\t\tsymbol = this._addSymbolForTextProxy( textProxy.startOffset, textProxy.endOffset, textProxy.parent );\n\t\t}\n\n\t\treturn symbol;\n\t}\n\n\t/**\n\t * Adds a symbol for given properties that characterizes a {@link module:engine/model/textproxy~TextProxy} instance.\n\t *\n\t * Used internally to correctly consume `TextProxy` instances.\n\t *\n\t * @private\n\t * @param {Number} startIndex Text proxy start index in it's parent.\n\t * @param {Number} endIndex Text proxy end index in it's parent.\n\t * @param {module:engine/model/element~Element} parent Text proxy parent.\n\t * @returns {Symbol} Symbol generated for given properties.\n\t */\n\t_addSymbolForTextProxy( start, end, parent ) {\n\t\tconst symbol = Symbol();\n\t\tlet startMap, endMap;\n\n\t\tstartMap = this._textProxyRegistry.get( start );\n\n\t\tif ( !startMap ) {\n\t\t\tstartMap = new Map();\n\t\t\tthis._textProxyRegistry.set( start, startMap );\n\t\t}\n\n\t\tendMap = startMap.get( end );\n\n\t\tif ( !endMap ) {\n\t\t\tendMap = new Map();\n\t\t\tstartMap.set( end, endMap );\n\t\t}\n\n\t\tendMap.set( parent, symbol );\n\n\t\treturn symbol;\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/conversion/modelconsumable.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * Contains {@link module:engine/view/selection~Selection view selection}\n * to {@link module:engine/model/selection~Selection model selection} conversion helpers.\n *\n * @module engine/conversion/view-selection-to-model-converters\n */\n\nimport ModelSelection from '../model/selection';\n\n/**\n * Function factory, creates a callback function which converts a {@link module:engine/view/selection~Selection view selection} taken\n * from the {@link module:engine/view/document~Document#event:selectionChange} event\n * and sets in on the {@link module:engine/model/document~Document#selection model}.\n *\n * **Note**: because there is no view selection change dispatcher nor any other advanced view selection to model\n * conversion mechanism, the callback should be set directly on view document.\n *\n *\t\tview.document.on( 'selectionChange', convertSelectionChange( modelDocument, mapper ) );\n *\n * @param {module:engine/model/document~Document} modelDocument Model document on which selection should be updated.\n * @param {module:engine/conversion/mapper~Mapper} mapper Conversion mapper.\n * @returns {Function} {@link module:engine/view/document~Document#event:selectionChange} callback function.\n */\nexport function convertSelectionChange( modelDocument, mapper ) {\n\treturn ( evt, data ) => {\n\t\tconst viewSelection = data.newSelection;\n\t\tconst modelSelection = new ModelSelection();\n\n\t\tconst ranges = [];\n\n\t\tfor ( let viewRange of viewSelection.getRanges() ) {\n\t\t\tranges.push( mapper.toModelRange( viewRange ) );\n\t\t}\n\n\t\tmodelSelection.setRanges( ranges, viewSelection.isBackward );\n\n\t\tif ( !modelSelection.isEqual( modelDocument.selection ) ) {\n\t\t\tmodelDocument.enqueueChanges( () => {\n\t\t\t\tmodelDocument.selection.setTo( modelSelection );\n\t\t\t} );\n\t\t}\n\t};\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/conversion/view-selection-to-model-converters.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\nimport ModelDocumentFragment from '../model/documentfragment';\nimport ModelText from '../model/text';\nimport { normalizeNodes } from '../model/writer';\n\n/**\n * Contains {@link module:engine/view/view view} to {@link module:engine/model/model model} converters for\n * {@link module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher}.\n *\n * @module engine/conversion/view-to-model-converters\n */\n\n/**\n * Function factory, creates a converter that converts {@link module:engine/view/documentfragment~DocumentFragment view document fragment}\n * or all children of {@link module:engine/view/element~Element} into\n * {@link module:engine/model/documentfragment~DocumentFragment model document fragment}.\n * This is the \"entry-point\" converter for view to model conversion. This converter starts the conversion of all children\n * of passed view document fragment. Those children {@link module:engine/view/node~Node view nodes} are then handled by other converters.\n *\n * This also a \"default\", last resort converter for all view elements that has not been converted by other converters.\n * When a view element is being converted to the model but it does not have converter specified, that view element\n * will be converted to {@link module:engine/model/documentfragment~DocumentFragment model document fragment} and returned.\n *\n * @returns {Function} Universal converter for view {@link module:engine/view/documentfragment~DocumentFragment fragments} and\n * {@link module:engine/view/element~Element elements} that returns\n * {@link module:engine/model/documentfragment~DocumentFragment model fragment} with children of converted view item.\n */\nexport function convertToModelFragment() {\n\treturn ( evt, data, consumable, conversionApi ) => {\n\t\t// Second argument in `consumable.consume` is discarded for ViewDocumentFragment but is needed for ViewElement.\n\t\tif ( !data.output && consumable.consume( data.input, { name: true } ) ) {\n\t\t\tconst convertedChildren = conversionApi.convertChildren( data.input, consumable, data );\n\n\t\t\tdata.output = new ModelDocumentFragment( normalizeNodes( convertedChildren ) );\n\t\t}\n\t};\n}\n\n/**\n * Function factory, creates a converter that converts {@link module:engine/view/text~Text} to {@link module:engine/model/text~Text}.\n *\n * @returns {Function} {@link module:engine/view/text~Text View text} converter.\n */\nexport function convertText() {\n\treturn ( evt, data, consumable, conversionApi ) => {\n\t\tconst schemaQuery = {\n\t\t\tname: '$text',\n\t\t\tinside: data.context\n\t\t};\n\n\t\tif ( conversionApi.schema.check( schemaQuery ) ) {\n\t\t\tif ( consumable.consume( data.input ) ) {\n\t\t\t\tdata.output = new ModelText( data.input.data );\n\t\t\t}\n\t\t}\n\t};\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/conversion/view-to-model-converters.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/conversion/viewconsumable\n */\n\nimport isArray from '@ckeditor/ckeditor5-utils/src/lib/lodash/isArray';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/**\n * Class used for handling consumption of view {@link module:engine/view/element~Element elements},\n * {@link module:engine/view/text~Text text nodes} and {@link module:engine/view/documentfragment~DocumentFragment document fragments}.\n * Element's name and its parts (attributes, classes and styles) can be consumed separately. Consuming an element's name\n * does not consume its attributes, classes and styles.\n * To add items for consumption use {@link module:engine/conversion/viewconsumable~ViewConsumable#add add method}.\n * To test items use {@link module:engine/conversion/viewconsumable~ViewConsumable#test test method}.\n * To consume items use {@link module:engine/conversion/viewconsumable~ViewConsumable#consume consume method}.\n * To revert already consumed items use {@link module:engine/conversion/viewconsumable~ViewConsumable#revert revert method}.\n *\n *\t\tviewConsumable.add( element, { name: true } ); // Adds element's name as ready to be consumed.\n *\t\tviewConsumable.add( textNode ); // Adds text node for consumption.\n *\t\tviewConsumable.add( docFragment ); // Adds document fragment for consumption.\n *\t\tviewConsumable.test( element, { name: true }  ); // Tests if element's name can be consumed.\n *\t\tviewConsumable.test( textNode ); // Tests if text node can be consumed.\n *\t\tviewConsumable.test( docFragment ); // Tests if document fragment can be consumed.\n *\t\tviewConsumable.consume( element, { name: true }  ); // Consume element's name.\n *\t\tviewConsumable.consume( textNode ); // Consume text node.\n *\t\tviewConsumable.consume( docFragment ); // Consume document fragment.\n *\t\tviewConsumable.revert( element, { name: true }  ); // Revert already consumed element's name.\n *\t\tviewConsumable.revert( textNode ); // Revert already consumed text node.\n *\t\tviewConsumable.revert( docFragment ); // Revert already consumed document fragment.\n */\nexport default class ViewConsumable {\n\t/**\n\t * Creates new ViewConsumable.\n\t */\n\tconstructor() {\n\t\t/**\n\t\t * Map of consumable elements. If {@link module:engine/view/element~Element element} is used as a key,\n\t\t * {@link module:engine/conversion/viewconsumable~ViewElementConsumables ViewElementConsumables} instance is stored as value.\n\t\t * For {@link module:engine/view/text~Text text nodes} and {@link module:engine/view/documentfragment~DocumentFragment document fragments}\n\t\t * boolean value is stored as value.\n\t\t *\n\t\t * @protected\n\t\t * @member {Map.<module:engine/conversion/viewconsumable~ViewElementConsumables|Boolean>}\n\t\t*/\n\t\tthis._consumables = new Map();\n\t}\n\n\t/**\n\t * Adds {@link module:engine/view/element~Element view element}, {@link module:engine/view/text~Text text node} or\n\t * {@link module:engine/view/documentfragment~DocumentFragment document fragment} as ready to be consumed.\n\t *\n\t *\t\tviewConsumable.add( p, { name: true } ); // Adds element's name to consume.\n\t *\t\tviewConsumable.add( p, { attribute: 'name' } ); // Adds element's attribute.\n\t *\t\tviewConsumable.add( p, { class: 'foobar' } ); // Adds element's class.\n\t *\t\tviewConsumable.add( p, { style: 'color' } ); // Adds element's style\n\t *\t\tviewConsumable.add( p, { attribute: 'name', style: 'color' } ); // Adds attribute and style.\n\t *\t\tviewConsumable.add( p, { class: [ 'baz', 'bar' ] } ); // Multiple consumables can be provided.\n\t *\t\tviewConsumable.add( textNode ); // Adds text node to consume.\n\t *\t\tviewConsumable.add( docFragment ); // Adds document fragment to consume.\n\t *\n\t * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `viewconsumable-invalid-attribute` when `class` or `style`\n\t * attribute is provided - it should be handled separately by providing actual style/class.\n\t *\n\t *\t\tviewConsumable.add( p, { attribute: 'style' } ); // This call will throw an exception.\n\t *\t\tviewConsumable.add( p, { style: 'color' } ); // This is properly handled style.\n\t *\n\t * @param {module:engine/view/element~Element|module:engine/view/text~Text|module:engine/view/documentfragment~DocumentFragment} element\n\t * @param {Object} [consumables] Used only if first parameter is {@link module:engine/view/element~Element view element} instance.\n\t * @param {Boolean} consumables.name If set to true element's name will be included.\n\t * @param {String|Array.<String>} consumables.attribute Attribute name or array of attribute names.\n\t * @param {String|Array.<String>} consumables.class Class name or array of class names.\n\t * @param {String|Array.<String>} consumables.style Style name or array of style names.\n\t */\n\tadd( element, consumables ) {\n\t\tlet elementConsumables;\n\n\t\t// For text nodes and document fragments just mark them as consumable.\n\t\tif ( element.is( 'text' ) || element.is( 'documentFragment' ) ) {\n\t\t\tthis._consumables.set( element, true );\n\n\t\t\treturn;\n\t\t}\n\n\t\t// For elements create new ViewElementConsumables or update already existing one.\n\t\tif ( !this._consumables.has( element ) ) {\n\t\t\telementConsumables = new ViewElementConsumables();\n\t\t\tthis._consumables.set( element, elementConsumables );\n\t\t} else {\n\t\t\telementConsumables = this._consumables.get( element );\n\t\t}\n\n\t\telementConsumables.add( consumables );\n\t}\n\n\t/**\n\t * Tests if {@link module:engine/view/element~Element view element}, {@link module:engine/view/text~Text text node} or\n\t * {@link module:engine/view/documentfragment~DocumentFragment document fragment} can be consumed.\n\t * It returns `true` when all items included in method's call can be consumed. Returns `false` when\n\t * first already consumed item is found and `null` when first non-consumable item is found.\n\t *\n\t *\t\tviewConsumable.test( p, { name: true } ); // Tests element's name.\n\t *\t\tviewConsumable.test( p, { attribute: 'name' } ); // Tests attribute.\n\t *\t\tviewConsumable.test( p, { class: 'foobar' } ); // Tests class.\n\t *\t\tviewConsumable.test( p, { style: 'color' } ); // Tests style.\n\t *\t\tviewConsumable.test( p, { attribute: 'name', style: 'color' } ); // Tests attribute and style.\n\t *\t\tviewConsumable.test( p, { class: [ 'baz', 'bar' ] } ); // Multiple consumables can be tested.\n\t *\t\tviewConsumable.test( textNode ); // Tests text node.\n\t *\t\tviewConsumable.test( docFragment ); // Tests document fragment.\n\t *\n\t * Testing classes and styles as attribute will test if all added classes/styles can be consumed.\n\t *\n\t *\t\tviewConsumable.test( p, { attribute: 'class' } ); // Tests if all added classes can be consumed.\n\t *\t\tviewConsumable.test( p, { attribute: 'style' } ); // Tests if all added styles can be consumed.\n\t *\n\t * @param {module:engine/view/element~Element|module:engine/view/text~Text|module:engine/view/documentfragment~DocumentFragment} element\n\t * @param {Object} [consumables] Used only if first parameter is {@link module:engine/view/element~Element view element} instance.\n\t * @param {Boolean} consumables.name If set to true element's name will be included.\n\t * @param {String|Array.<String>} consumables.attribute Attribute name or array of attribute names.\n\t * @param {String|Array.<String>} consumables.class Class name or array of class names.\n\t * @param {String|Array.<String>} consumables.style Style name or array of style names.\n\t * @returns {Boolean|null} Returns `true` when all items included in method's call can be consumed. Returns `false`\n\t * when first already consumed item is found and `null` when first non-consumable item is found.\n\t */\n\ttest( element, consumables ) {\n\t\tconst elementConsumables = this._consumables.get( element );\n\n\t\tif ( elementConsumables === undefined ) {\n\t\t\treturn null;\n\t\t}\n\n\t\t// For text nodes and document fragments return stored boolean value.\n\t\tif ( element.is( 'text' ) || element.is( 'documentFragment' ) ) {\n\t\t\treturn elementConsumables;\n\t\t}\n\n\t\t// For elements test consumables object.\n\t\treturn elementConsumables.test( consumables );\n\t}\n\n\t/**\n\t * Consumes {@link module:engine/view/element~Element view element}, {@link module:engine/view/text~Text text node} or\n\t * {@link module:engine/view/documentfragment~DocumentFragment document fragment}.\n\t * It returns `true` when all items included in method's call can be consumed, otherwise returns `false`.\n\t *\n\t *\t\tviewConsumable.consume( p, { name: true } ); // Consumes element's name.\n\t *\t\tviewConsumable.consume( p, { attribute: 'name' } ); // Consumes element's attribute.\n\t *\t\tviewConsumable.consume( p, { class: 'foobar' } ); // Consumes element's class.\n\t *\t\tviewConsumable.consume( p, { style: 'color' } ); // Consumes element's style.\n\t *\t\tviewConsumable.consume( p, { attribute: 'name', style: 'color' } ); // Consumes attribute and style.\n\t *\t\tviewConsumable.consume( p, { class: [ 'baz', 'bar' ] } ); // Multiple consumables can be consumed.\n\t *\t\tviewConsumable.consume( textNode ); // Consumes text node.\n\t *\t\tviewConsumable.consume( docFragment ); // Consumes document fragment.\n\t *\n\t * Consuming classes and styles as attribute will test if all added classes/styles can be consumed.\n\t *\n\t *\t\tviewConsumable.consume( p, { attribute: 'class' } ); // Consume only if all added classes can be consumed.\n\t *\t\tviewConsumable.consume( p, { attribute: 'style' } ); // Consume only if all added styles can be consumed.\n\t *\n\t * @param {module:engine/view/element~Element|module:engine/view/text~Text|module:engine/view/documentfragment~DocumentFragment} element\n\t * @param {Object} [consumables] Used only if first parameter is {@link module:engine/view/element~Element view element} instance.\n\t * @param {Boolean} consumables.name If set to true element's name will be included.\n\t * @param {String|Array.<String>} consumables.attribute Attribute name or array of attribute names.\n\t * @param {String|Array.<String>} consumables.class Class name or array of class names.\n\t * @param {String|Array.<String>} consumables.style Style name or array of style names.\n\t * @returns {Boolean} Returns `true` when all items included in method's call can be consumed,\n\t * otherwise returns `false`.\n\t */\n\tconsume( element, consumables ) {\n\t\tif ( this.test( element, consumables ) ) {\n\t\t\tif ( element.is( 'text' ) || element.is( 'documentFragment' ) ) {\n\t\t\t\t// For text nodes and document fragments set value to false.\n\t\t\t\tthis._consumables.set( element, false );\n\t\t\t} else {\n\t\t\t\t// For elements - consume consumables object.\n\t\t\t\tthis._consumables.get( element ).consume( consumables );\n\t\t\t}\n\n\t\t\treturn true;\n\t\t}\n\n\t\treturn false;\n\t}\n\n\t/**\n\t * Reverts {@link module:engine/view/element~Element view element}, {@link module:engine/view/text~Text text node} or\n\t * {@link module:engine/view/documentfragment~DocumentFragment document fragment} so they can be consumed once again.\n\t * Method does not revert items that were never previously added for consumption, even if they are included in\n\t * method's call.\n\t *\n\t *\t\tviewConsumable.revert( p, { name: true } ); // Reverts element's name.\n\t *\t\tviewConsumable.revert( p, { attribute: 'name' } ); // Reverts element's attribute.\n\t *\t\tviewConsumable.revert( p, { class: 'foobar' } ); // Reverts element's class.\n\t *\t\tviewConsumable.revert( p, { style: 'color' } ); // Reverts element's style.\n\t *\t\tviewConsumable.revert( p, { attribute: 'name', style: 'color' } ); // Reverts attribute and style.\n\t *\t\tviewConsumable.revert( p, { class: [ 'baz', 'bar' ] } ); // Multiple names can be reverted.\n\t *\t\tviewConsumable.revert( textNode ); // Reverts text node.\n\t *\t\tviewConsumable.revert( docFragment ); // Reverts document fragment.\n\t *\n\t * Reverting classes and styles as attribute will revert all classes/styles that were previously added for\n\t * consumption.\n\t *\n\t *\t\tviewConsumable.revert( p, { attribute: 'class' } ); // Reverts all classes added for consumption.\n\t *\t\tviewConsumable.revert( p, { attribute: 'style' } ); // Reverts all styles added for consumption.\n\t *\n\t * @param {module:engine/view/element~Element|module:engine/view/text~Text|module:engine/view/documentfragment~DocumentFragment} element\n\t * @param {Object} [consumables] Used only if first parameter is {@link module:engine/view/element~Element view element} instance.\n\t * @param {Boolean} consumables.name If set to true element's name will be included.\n\t * @param {String|Array.<String>} consumables.attribute Attribute name or array of attribute names.\n\t * @param {String|Array.<String>} consumables.class Class name or array of class names.\n\t * @param {String|Array.<String>} consumables.style Style name or array of style names.\n\t */\n\trevert( element, consumables ) {\n\t\tconst elementConsumables = this._consumables.get( element );\n\n\t\tif ( elementConsumables !== undefined ) {\n\t\t\tif ( element.is( 'text' ) || element.is( 'documentFragment' ) ) {\n\t\t\t\t// For text nodes and document fragments - set consumable to true.\n\t\t\t\tthis._consumables.set( element, true );\n\t\t\t} else {\n\t\t\t\t// For elements - revert items from consumables object.\n\t\t\t\telementConsumables.revert( consumables );\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Creates consumable object from {@link module:engine/view/element~Element view element}. Consumable object will include\n\t * element's name and all its attributes, classes and styles.\n\t *\n\t * @static\n\t * @param {module:engine/view/element~Element} element\n\t * @returns {Object} consumables\n\t */\n\tstatic consumablesFromElement( element ) {\n\t\tconst consumables = {\n\t\t\tname: true,\n\t\t\tattribute: [],\n\t\t\tclass: [],\n\t\t\tstyle: []\n\t\t};\n\n\t\tconst attributes = element.getAttributeKeys();\n\n\t\tfor ( let attribute of attributes ) {\n\t\t\t// Skip classes and styles - will be added separately.\n\t\t\tif ( attribute == 'style' || attribute == 'class' ) {\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\tconsumables.attribute.push( attribute );\n\t\t}\n\n\t\tconst classes = element.getClassNames();\n\n\t\tfor ( let className of classes ) {\n\t\t\tconsumables.class.push( className );\n\t\t}\n\n\t\tconst styles = element.getStyleNames();\n\n\t\tfor ( let style of styles ) {\n\t\t\tconsumables.style.push( style );\n\t\t}\n\n\t\treturn consumables;\n\t}\n\n\t/**\n\t * Creates {@link module:engine/conversion/viewconsumable~ViewConsumable ViewConsumable} instance from\n\t * {@link module:engine/view/node~Node node} or {@link module:engine/view/documentfragment~DocumentFragment document fragment}.\n\t * Instance will contain all elements, child nodes, attributes, styles and classes added for consumption.\n\t *\n\t * @static\n\t * @param {module:engine/view/node~Node|module:engine/view/documentfragment~DocumentFragment} from View node or document fragment\n\t * from which `ViewConsumable` will be created.\n\t * @param {module:engine/conversion/viewconsumable~ViewConsumable} [instance] If provided, given `ViewConsumable` instance will be used\n\t * to add all consumables. It will be returned instead of a new instance.\n\t */\n\tstatic createFrom( from, instance ) {\n\t\tif ( !instance ) {\n\t\t\tinstance = new ViewConsumable();\n\t\t}\n\n\t\tif ( from.is( 'text' ) ) {\n\t\t\tinstance.add( from );\n\n\t\t\treturn instance;\n\t\t}\n\n\t\t// Add `from` itself, if it is an element.\n\t\tif ( from.is( 'element' ) ) {\n\t\t\tinstance.add( from, ViewConsumable.consumablesFromElement( from ) );\n\t\t}\n\n\t\tif ( from.is( 'documentFragment' ) ) {\n\t\t\tinstance.add( from );\n\t\t}\n\n\t\tfor ( let child of from.getChildren() ) {\n\t\t\tinstance = ViewConsumable.createFrom( child, instance );\n\t\t}\n\n\t\treturn instance;\n\t}\n}\n\n/**\n * This is a private helper-class for {@link module:engine/conversion/viewconsumable~ViewConsumable}.\n * It represents and manipulates consumable parts of a single {@link module:engine/view/element~Element}.\n *\n * @private\n */\nclass ViewElementConsumables {\n\n\t/**\n\t * Creates ViewElementConsumables instance.\n\t */\n\tconstructor()  {\n\t\t/**\n\t\t * Flag indicating if name of the element can be consumed.\n\t\t *\n\t\t * @private\n\t\t * @member {Boolean}\n\t\t */\n\t\tthis._canConsumeName = null;\n\n\t\t/**\n\t\t * Contains maps of element's consumables: attributes, classes and styles.\n\t\t *\n\t\t * @private\n\t\t * @member {Object}\n\t\t */\n\t\tthis._consumables = {\n\t\t\tattribute: new Map(),\n\t\t\tstyle: new Map(),\n\t\t\tclass: new Map()\n\t\t};\n\t}\n\n\t/**\n\t * Adds consumable parts of the {@link module:engine/view/element~Element view element}.\n\t * Element's name itself can be marked to be consumed (when element's name is consumed its attributes, classes and\n\t * styles still could be consumed):\n\t *\n\t *\t\tconsumables.add( { name: true } );\n\t *\n\t * Attributes classes and styles:\n\t *\n\t *\t\tconsumables.add( { attribute: 'title', class: 'foo', style: 'color' } );\n\t *\t\tconsumables.add( { attribute: [ 'title', 'name' ], class: [ 'foo', 'bar' ] );\n\t *\n\t * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `viewconsumable-invalid-attribute` when `class` or `style`\n\t * attribute is provided - it should be handled separately by providing `style` and `class` in consumables object.\n\t *\n\t * @param {Object} consumables Object describing which parts of the element can be consumed.\n\t * @param {Boolean} consumables.name If set to `true` element's name will be added as consumable.\n\t * @param {String|Array.<String>} consumables.attribute Attribute name or array of attribute names to add as consumable.\n\t * @param {String|Array.<String>} consumables.class Class name or array of class names to add as consumable.\n\t * @param {String|Array.<String>} consumables.style Style name or array of style names to add as consumable.\n\t */\n\tadd( consumables ) {\n\t\tif ( consumables.name ) {\n\t\t\tthis._canConsumeName = true;\n\t\t}\n\n\t\tfor ( let type in this._consumables ) {\n\t\t\tif ( type in consumables ) {\n\t\t\t\tthis._add( type, consumables[ type ] );\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Tests if parts of the {@link module:engine/view/node~Node view node} can be consumed.\n\t *\n\t * Element's name can be tested:\n\t *\n\t *\t\tconsumables.test( { name: true } );\n\t *\n\t * Attributes classes and styles:\n\t *\n\t *\t\tconsumables.test( { attribute: 'title', class: 'foo', style: 'color' } );\n\t *\t\tconsumables.test( { attribute: [ 'title', 'name' ], class: [ 'foo', 'bar' ] );\n\t *\n\t * @param {Object} consumables Object describing which parts of the element should be tested.\n\t * @param {Boolean} consumables.name If set to `true` element's name will be tested.\n\t * @param {String|Array.<String>} consumables.attribute Attribute name or array of attribute names to test.\n\t * @param {String|Array.<String>} consumables.class Class name or array of class names to test.\n\t * @param {String|Array.<String>} consumables.style Style name or array of style names to test.\n\t * @returns {Boolean|null} `true` when all tested items can be consumed, `null` when even one of the items\n\t * was never marked for consumption and `false` when even one of the items was already consumed.\n\t */\n\ttest( consumables ) {\n\t\t// Check if name can be consumed.\n\t\tif ( consumables.name && !this._canConsumeName ) {\n\t\t\treturn this._canConsumeName;\n\t\t}\n\n\t\tfor ( let type in this._consumables ) {\n\t\t\tif ( type in consumables ) {\n\t\t\t\tconst value = this._test( type, consumables[ type ] );\n\n\t\t\t\tif ( value !== true ) {\n\t\t\t\t\treturn value;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t// Return true only if all can be consumed.\n\t\treturn true;\n\t}\n\n\t/**\n\t * Consumes parts of {@link module:engine/view/element~Element view element}. This function does not check if consumable item\n\t * is already consumed - it consumes all consumable items provided.\n\t * Element's name can be consumed:\n\t *\n\t *\t\tconsumables.consume( { name: true } );\n\t *\n\t * Attributes classes and styles:\n\t *\n\t *\t\tconsumables.consume( { attribute: 'title', class: 'foo', style: 'color' } );\n\t *\t\tconsumables.consume( { attribute: [ 'title', 'name' ], class: [ 'foo', 'bar' ] );\n\t *\n\t * @param {Object} consumables Object describing which parts of the element should be consumed.\n\t * @param {Boolean} consumables.name If set to `true` element's name will be consumed.\n\t * @param {String|Array.<String>} consumables.attribute Attribute name or array of attribute names to consume.\n\t * @param {String|Array.<String>} consumables.class Class name or array of class names to consume.\n\t * @param {String|Array.<String>} consumables.style Style name or array of style names to consume.\n\t */\n\tconsume( consumables ) {\n\t\tif ( consumables.name ) {\n\t\t\tthis._canConsumeName = false;\n\t\t}\n\n\t\tfor ( let type in this._consumables ) {\n\t\t\tif ( type in consumables ) {\n\t\t\t\tthis._consume( type, consumables[ type ] );\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Revert already consumed parts of {@link module:engine/view/element~Element view Element}, so they can be consumed once again.\n\t * Element's name can be reverted:\n\t *\n\t *\t\tconsumables.revert( { name: true } );\n\t *\n\t * Attributes classes and styles:\n\t *\n\t *\t\tconsumables.revert( { attribute: 'title', class: 'foo', style: 'color' } );\n\t *\t\tconsumables.revert( { attribute: [ 'title', 'name' ], class: [ 'foo', 'bar' ] );\n\t *\n\t * @param {Object} consumables Object describing which parts of the element should be reverted.\n\t * @param {Boolean} consumables.name If set to `true` element's name will be reverted.\n\t * @param {String|Array.<String>} consumables.attribute Attribute name or array of attribute names to revert.\n\t * @param {String|Array.<String>} consumables.class Class name or array of class names to revert.\n\t * @param {String|Array.<String>} consumables.style Style name or array of style names to revert.\n\t */\n\trevert( consumables ) {\n\t\tif ( consumables.name ) {\n\t\t\tthis._canConsumeName = true;\n\t\t}\n\n\t\tfor ( let type in this._consumables ) {\n\t\t\tif ( type in consumables ) {\n\t\t\t\tthis._revert( type, consumables[ type ] );\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Helper method that adds consumables of a given type: attribute, class or style.\n\t *\n\t * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `viewconsumable-invalid-attribute` when `class` or `style`\n\t * type is provided - it should be handled separately by providing actual style/class type.\n\t *\n\t * @private\n\t * @param {String} type Type of the consumable item: `attribute`, `class` or `style`.\n\t * @param {String|Array.<String>} item Consumable item or array of items.\n\t */\n\t_add( type, item ) {\n\t\tconst items = isArray( item ) ? item : [ item ];\n\t\tconst consumables = this._consumables[ type ];\n\n\t\tfor ( let name of items ) {\n\t\t\tif ( type === 'attribute' && ( name === 'class' || name === 'style' ) ) {\n\t\t\t\t/**\n\t\t\t\t * Class and style attributes should be handled separately.\n\t\t\t\t *\n\t\t\t\t * @error viewconsumable-invalid-attribute\n\t\t\t\t */\n\t\t\t\tthrow new CKEditorError( 'viewconsumable-invalid-attribute: Classes and styles should be handled separately.' );\n\t\t\t}\n\n\t\t\tconsumables.set( name, true );\n\t\t}\n\t}\n\n\t/**\n\t * Helper method that tests consumables of a given type: attribute, class or style.\n\t *\n\t * @private\n\t * @param {String} type Type of the consumable item: `attribute`, `class` or `style`.\n\t * @param {String|Array.<String>} item Consumable item or array of items.\n\t * @returns {Boolean|null} Returns `true` if all items can be consumed, `null` when one of the items cannot be\n\t * consumed and `false` when one of the items is already consumed.\n\t */\n\t_test( type, item ) {\n\t\tconst items = isArray( item ) ? item : [ item ];\n\t\tconst consumables = this._consumables[ type ];\n\n\t\tfor ( let name of items ) {\n\t\t\tif ( type === 'attribute' && ( name === 'class' || name === 'style' ) )  {\n\t\t\t\t// Check all classes/styles if class/style attribute is tested.\n\t\t\t\tconst value = this._test( name, [ ...this._consumables[ name ].keys() ] );\n\n\t\t\t\tif ( value !== true ) {\n\t\t\t\t\treturn value;\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\tconst value = consumables.get( name );\n\t\t\t\t// Return null if attribute is not found.\n\t\t\t\tif ( value === undefined ) {\n\t\t\t\t\treturn null;\n\t\t\t\t}\n\n\t\t\t\tif ( !value ) {\n\t\t\t\t\treturn false;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn true;\n\t}\n\n\t/**\n\t * Helper method that consumes items of a given type: attribute, class or style.\n\t *\n\t * @private\n\t * @param {String} type Type of the consumable item: `attribute`, `class` or `style`.\n\t * @param {String|Array.<String>} item Consumable item or array of items.\n\t */\n\t_consume( type, item ) {\n\t\tconst items = isArray( item ) ? item : [ item ];\n\t\tconst consumables = this._consumables[ type ];\n\n\t\tfor ( let name of items ) {\n\t\t\tif ( type === 'attribute' && ( name === 'class' || name === 'style' ) ) {\n\t\t\t\t// If class or style is provided for consumption - consume them all.\n\t\t\t\tthis._consume( name, [ ...this._consumables[ name ].keys() ] );\n\t\t\t} else {\n\t\t\t\tconsumables.set( name, false );\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Helper method that reverts items of a given type: attribute, class or style.\n\t *\n\t * @private\n\t * @param {String} type Type of the consumable item: `attribute`, `class` or , `style`.\n\t * @param {String|Array.<String>} item Consumable item or array of items.\n\t */\n\t_revert( type, item ) {\n\t\tconst items = isArray( item ) ? item : [ item ];\n\t\tconst consumables = this._consumables[ type ];\n\n\t\tfor ( let name of items ) {\n\t\t\tif ( type === 'attribute' && ( name === 'class' || name === 'style' ) ) {\n\t\t\t\t// If class or style is provided for reverting - revert them all.\n\t\t\t\tthis._revert( name, [ ...this._consumables[ name ].keys() ] );\n\t\t\t} else {\n\t\t\t\tconst value = consumables.get( name );\n\n\t\t\t\tif ( value === false ) {\n\t\t\t\t\tconsumables.set( name, true );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/conversion/viewconsumable.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/conversion/viewconversiondispatcher\n */\n\nimport ViewConsumable from './viewconsumable';\nimport EmitterMixin from '@ckeditor/ckeditor5-utils/src/emittermixin';\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\nimport extend from '@ckeditor/ckeditor5-utils/src/lib/lodash/extend';\n\n/**\n * `ViewConversionDispatcher` is a central point of {@link module:engine/view/view view} conversion, which is a process of\n * converting given {@link module:engine/view/documentfragment~DocumentFragment view document fragment} or\n * {@link module:engine/view/element~Element}\n * into another structure. In default application, {@link module:engine/view/view view} is converted to {@link module:engine/model/model}.\n *\n * During conversion process, for all {@link module:engine/view/node~Node view nodes} from the converted view document fragment,\n * `ViewConversionDispatcher` fires corresponding events. Special callbacks called \"converters\" should listen to\n * `ViewConversionDispatcher` for those events.\n *\n * Each callback, as a first argument, is passed a special object `data` that has `input` and `output` properties.\n * `input` property contains {@link module:engine/view/node~Node view node} or\n * {@link module:engine/view/documentfragment~DocumentFragment view document fragment}\n * that is converted at the moment and might be handled by the callback. `output` property should be used to save the result\n * of conversion. Keep in mind that the `data` parameter is customizable and may contain other values - see\n * {@link ~ViewConversionDispatcher#convert}. It is also shared by reference by all callbacks\n * listening to given event. **Note**: in view to model conversion - `data` contains `context` property that is an array\n * of {@link module:engine/model/element~Element model elements}. These are model elements that will be the parent of currently\n * converted view item. `context` property is used in examples below.\n *\n * The second parameter passed to a callback is an instance of {@link module:engine/conversion/viewconsumable~ViewConsumable}. It stores\n * information about what parts of processed view item are still waiting to be handled. After a piece of view item\n * was converted, appropriate consumable value should be {@link module:engine/conversion/viewconsumable~ViewConsumable#consume consumed}.\n *\n * The third parameter passed to a callback is an instance of {@link ~ViewConversionDispatcher}\n * which provides additional tools for converters.\n *\n * Examples of providing callbacks for `ViewConversionDispatcher`:\n *\n *\t\t// Converter for paragraphs (<p>).\n *\t\tviewDispatcher.on( 'element:p', ( evt, data, consumable, conversionApi ) => {\n *\t\t\tconst paragraph = new ModelElement( 'paragraph' );\n *\t\t\tconst schemaQuery = {\n *\t\t\t\tname: 'paragraph',\n *\t\t\t\tinside: data.context\n *\t\t\t};\n *\n *\t\t\tif ( conversionApi.schema.check( schemaQuery ) ) {\n *\t\t\t\tif ( !consumable.consume( data.input, { name: true } ) ) {\n *\t\t\t\t\t// Before converting this paragraph's children we have to update their context by this paragraph.\n *\t\t\t\t\tdata.context.push( paragraph );\n *\t\t\t\t\tconst children = conversionApi.convertChildren( data.input, consumable, data );\n *\t\t\t\t\tdata.context.pop();\n *\t\t\t\t\tparagraph.appendChildren( children );\n *\t\t\t\t\tdata.output = paragraph;\n *\t\t\t\t}\n *\t\t\t}\n *\t\t} );\n *\n *\t\t// Converter for links (<a>).\n *\t\tviewDispatcher.on( 'element:a', ( evt, data, consumable, conversionApi ) => {\n *\t\t\tif ( consumable.consume( data.input, { name: true, attributes: [ 'href' ] } ) ) {\n *\t\t\t\t// <a> element is inline and is represented by an attribute in the model.\n *\t\t\t\t// This is why we are not updating `context` property.\n *\t\t\t\tdata.output = conversionApi.convertChildren( data.input, consumable, data );\n *\n *\t\t\t\tfor ( let item of Range.createFrom( data.output ) ) {\n *\t\t\t\t\tconst schemaQuery = {\n *\t\t\t\t\t\tname: item.name || '$text',\n *\t\t\t\t\t\tattribute: 'link',\n *\t\t\t\t\t\tinside: data.context\n *\t\t\t\t\t};\n *\n *\t\t\t\t\tif ( conversionApi.schema.check( schemaQuery ) ) {\n *\t\t\t\t\t\titem.setAttribute( 'link', data.input.getAttribute( 'href' ) );\n *\t\t\t\t\t}\n *\t\t\t\t}\n *\t\t\t}\n *\t\t} );\n *\n *\t\t// Fire conversion.\n *\t\t// Always take care where the converted model structure will be appended to. If this `viewDocumentFragment`\n *\t\t// is going to be appended directly to a '$root' element, use that in `context`.\n *\t\tviewDispatcher.convert( viewDocumentFragment, { context: [ '$root' ] } );\n *\n * Before each conversion process, `ViewConversionDispatcher` fires {@link ~ViewConversionDispatcher#event:viewCleanup}\n * event which can be used to prepare tree view for conversion.\n *\n * @mixes module:utils/emittermixin~EmitterMixin\n * @fires viewCleanup\n * @fires element\n * @fires text\n * @fires documentFragment\n */\nexport default class ViewConversionDispatcher {\n\t/**\n\t * Creates a `ViewConversionDispatcher` that operates using passed API.\n\t *\n\t * @see module:engine/conversion/viewconversiondispatcher~ViewConversionApi\n\t * @param {Object} [conversionApi] Additional properties for interface that will be passed to events fired\n\t * by `ViewConversionDispatcher`.\n\t */\n\tconstructor( conversionApi = {} ) {\n\t\t/**\n\t\t * Interface passed by dispatcher to the events callbacks.\n\t\t *\n\t\t * @member {module:engine/conversion/viewconversiondispatcher~ViewConversionApi}\n\t\t */\n\t\tthis.conversionApi = extend( {}, conversionApi );\n\n\t\t// `convertItem` and `convertChildren` are bound to this `ViewConversionDispatcher` instance and\n\t\t// set on `conversionApi`. This way only a part of `ViewConversionDispatcher` API is exposed.\n\t\tthis.conversionApi.convertItem = this._convertItem.bind( this );\n\t\tthis.conversionApi.convertChildren = this._convertChildren.bind( this );\n\t}\n\n\t/**\n\t * Starts the conversion process. The entry point for the conversion.\n\t *\n\t * @fires element\n\t * @fires text\n\t * @fires documentFragment\n\t * @param {module:engine/view/documentfragment~DocumentFragment|module:engine/view/element~Element}\n\t * viewItem Part of the view to be converted.\n\t * @param {Object} [additionalData] Additional data to be passed in `data` argument when firing `ViewConversionDispatcher`\n\t * events. See also {@link ~ViewConversionDispatcher#event:element element event}.\n\t * @returns {module:engine/model/documentfragment~DocumentFragment} Model document fragment that is a result of the conversion process.\n\t */\n\tconvert( viewItem, additionalData = {} ) {\n\t\tthis.fire( 'viewCleanup', viewItem );\n\n\t\tconst consumable = ViewConsumable.createFrom( viewItem );\n\n\t\treturn this._convertItem( viewItem, consumable, additionalData );\n\t}\n\n\t/**\n\t * @private\n\t * @see module:engine/conversion/viewconversiondispatcher~ViewConversionApi#convertItem\n\t */\n\t_convertItem( input, consumable, additionalData = {} ) {\n\t\tconst data = extend( {}, additionalData, {\n\t\t\tinput: input,\n\t\t\toutput: null\n\t\t} );\n\n\t\tif ( input.is( 'element' ) ) {\n\t\t\tthis.fire( 'element:' + input.name, data, consumable, this.conversionApi );\n\t\t} else if ( input.is( 'text' ) ) {\n\t\t\tthis.fire( 'text', data, consumable, this.conversionApi );\n\t\t} else {\n\t\t\tthis.fire( 'documentFragment', data, consumable, this.conversionApi );\n\t\t}\n\n\t\treturn data.output;\n\t}\n\n\t/**\n\t * @private\n\t * @see module:engine/conversion/viewconversiondispatcher~ViewConversionApi#convertChildren\n\t */\n\t_convertChildren( input, consumable, additionalData = {} ) {\n\t\tconst viewChildren = Array.from( input.getChildren() );\n\t\tconst convertedChildren = viewChildren.map( ( viewChild ) => this._convertItem( viewChild, consumable, additionalData ) );\n\n\t\t// Flatten and remove nulls.\n\t\treturn convertedChildren.reduce( ( a, b ) => b ? a.concat( b ) : a, [] );\n\t}\n\n\t/**\n\t * Fired before the first conversion event, at the beginning of view to model conversion process.\n\t *\n\t * @event viewCleanup\n\t * @param {module:engine/view/documentfragment~DocumentFragment|module:engine/view/element~Element}\n\t * viewItem Part of the view to be converted.\n\t */\n\n\t/**\n\t * Fired when {@link module:engine/view/element~Element} is converted.\n\t *\n\t * `element` is a namespace event for a class of events. Names of actually called events follow this pattern:\n\t * `element:<elementName>` where `elementName` is the name of converted element. This way listeners may listen to\n\t * all elements conversion or to conversion of specific elements.\n\t *\n\t * @event element\n\t * @param {Object} data Object containing conversion input and a placeholder for conversion output and possibly other\n\t * values (see {@link #convert}).\n\t * Keep in mind that this object is shared by reference between all callbacks that will be called.\n\t * This means that callbacks can add their own values if needed,\n\t * and those values will be available in other callbacks.\n\t * @param {module:engine/view/element~Element} data.input Converted element.\n\t * @param {*} data.output The current state of conversion result. Every change to converted element should\n\t * be reflected by setting or modifying this property.\n\t * @param {module:engine/model/schema~SchemaPath} data.context The conversion context.\n\t * @param {module:engine/conversion/viewconsumable~ViewConsumable} consumable Values to consume.\n\t * @param {Object} conversionApi Conversion interface to be used by callback, passed in `ViewConversionDispatcher` constructor.\n\t * Besides of properties passed in constructor, it also has `convertItem` and `convertChildren` methods which are references\n\t * to {@link #_convertItem} and\n\t * {@link ~ViewConversionDispatcher#_convertChildren}. Those methods are needed to convert\n\t * the whole view-tree they were exposed in `conversionApi` for callbacks.\n\t */\n\n\t/**\n\t * Fired when {@link module:engine/view/text~Text} is converted.\n\t *\n\t * @event text\n\t * @see #event:element\n\t */\n\n\t/**\n\t * Fired when {@link module:engine/view/documentfragment~DocumentFragment} is converted.\n\t *\n\t * @event documentFragment\n\t * @see #event:element\n\t */\n}\n\nmix( ViewConversionDispatcher, EmitterMixin );\n\n/**\n * Conversion interface that is registered for given {@link module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher}\n * and is passed as one of parameters when {@link module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher dispatcher}\n * fires it's events.\n *\n * `ViewConversionApi` object is built by {@link module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher} constructor.\n * The exact list of properties of this object is determined by the object passed to the constructor.\n *\n * @interface ViewConversionApi\n */\n\n/**\n * Starts conversion of given item by firing an appropriate event.\n *\n * Every fired event is passed (as first parameter) an object with `output` property. Every event may set and/or\n * modify that property. When all callbacks are done, the final value of `output` property is returned by this method.\n *\n * @method #convertItem\n * @fires module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher#event:element\n * @fires module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher#event:text\n * @fires module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher#event:documentFragment\n * @param {module:engine/view/documentfragment~DocumentFragment|module:engine/view/element~Element|module:engine/view/text~Text}\n * input Item to convert.\n * @param {module:engine/conversion/viewconsumable~ViewConsumable} consumable Values to consume.\n * @param {Object} [additionalData] Additional data to be passed in `data` argument when firing `ViewConversionDispatcher`\n * events. See also {@link module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher#event:element element event}.\n * @returns {*} The result of item conversion, created and modified by callbacks attached to fired event.\n */\n\n/**\n * Starts conversion of all children of given item by firing appropriate events for all those children.\n *\n * @method #convertChildren\n * @fires module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher#event:element\n * @fires module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher#event:text\n * @fires module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher#event:documentFragment\n * @param {module:engine/view/documentfragment~DocumentFragment|module:engine/view/element~Element}\n * input Item which children will be converted.\n * @param {module:engine/conversion/viewconsumable~ViewConsumable} consumable Values to consume.\n * @param {Object} [additionalData] Additional data to be passed in `data` argument when firing `ViewConversionDispatcher`\n * events. See also {@link module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher#event:element element event}.\n * @returns {Array.<*>} Array containing results of conversion of all children of given item.\n */\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/conversion/viewconversiondispatcher.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/dataprocessor/basichtmlwriter\n */\n\n/* globals document */\n\n/**\n * Basic HTML writer, it uses the native `innerHTML` property for basic conversion\n * from DocumentFragment to an HTML string.\n *\n * @implements module:engine/dataprocessor/htmlwriter~HtmlWriter\n */\nexport default class BasicHtmlWriter {\n\t/**\n\t * Returns HTML string created from DocumentFragment.\n\t *\n\t * @param {DocumentFragment} fragment\n\t * @returns {String}\n\t */\n\tgetHtml( fragment ) {\n\t\tconst doc = document.implementation.createHTMLDocument( '' );\n\t\tconst container = doc.createElement( 'div' );\n\t\tcontainer.appendChild( fragment );\n\n\t\treturn container.innerHTML;\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/dataprocessor/basichtmlwriter.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/delta/basic-deltas\n */\n\n// Deltas require `register` method that require `Batch` class and is defined in batch-base.js.\n// We would like to group all deltas files in one place, so we would only have to include batch.js\n// which would already have all default deltas registered.\n\n// Import default suite of deltas so a feature have to include only Batch class file.\nimport d01 from './attributedelta';\nimport d02 from './insertdelta';\nimport d03 from './mergedelta';\nimport d04 from './movedelta';\nimport d05 from './removedelta';\nimport d06 from './renamedelta';\nimport d07 from './splitdelta';\nimport d08 from './unwrapdelta';\nimport d09 from './weakinsertdelta';\nimport d10 from './wrapdelta';\n/*jshint unused: false*/\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/delta/basic-deltas.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/delta/basic-transformations\n */\n\nimport { addTransformationCase, defaultTransform } from './transform';\n\nimport Range from '../range';\nimport Position from '../position';\n\nimport NoOperation from '../operation/nooperation';\nimport AttributeOperation from '../operation/attributeoperation';\nimport InsertOperation from '../operation/insertoperation';\nimport ReinsertOperation from '../operation/reinsertoperation';\n\nimport Delta from './delta';\nimport AttributeDelta from './attributedelta';\nimport InsertDelta from './insertdelta';\nimport MarkerDelta from './markerdelta';\nimport MergeDelta from './mergedelta';\nimport MoveDelta from './movedelta';\nimport SplitDelta from './splitdelta';\nimport WeakInsertDelta from './weakinsertdelta';\nimport WrapDelta from './wrapdelta';\nimport UnwrapDelta from './unwrapdelta';\nimport RenameDelta from './renamedelta';\nimport RemoveDelta from './removedelta';\n\nimport compareArrays from '@ckeditor/ckeditor5-utils/src/comparearrays';\n\n// Provide transformations for default deltas.\n\n// Add special case for AttributeDelta x WeakInsertDelta transformation.\naddTransformationCase( AttributeDelta, WeakInsertDelta, ( a, b, isStrong ) => {\n\t// If nodes are weak-inserted into attribute delta range, we need to apply changes from attribute delta on them.\n\t// So first we do the normal transformation and if this special cases happens, we will add an extra delta.\n\tconst deltas = defaultTransform( a, b, isStrong );\n\n\tif ( a.range.containsPosition( b.position ) ) {\n\t\tdeltas.push( _getComplementaryAttrDelta( b, a ) );\n\t}\n\n\treturn deltas;\n} );\n\n// Add special case for AttributeDelta x SplitDelta transformation.\naddTransformationCase( AttributeDelta, SplitDelta, ( a, b, isStrong ) => {\n\tconst splitPosition = new Position( b.position.root, b.position.path.slice( 0, -1 ) );\n\n\tconst deltas = defaultTransform( a, b, isStrong );\n\n\tfor ( let operation of a.operations ) {\n\t\t// If a node that has been split has it's attribute updated, we should also update attribute of\n\t\t// the node created during splitting.\n\t\tif ( operation.range.containsPosition( splitPosition ) || operation.range.start.isEqual( splitPosition ) ) {\n\t\t\tconst additionalAttributeDelta = new AttributeDelta();\n\n\t\t\tconst rangeStart = splitPosition.getShiftedBy( 1 );\n\t\t\tconst rangeEnd = Position.createFromPosition( rangeStart );\n\t\t\trangeEnd.path.push( 0 );\n\n\t\t\tconst oldValue = b._cloneOperation.nodes.getNode( 0 ).getAttribute( operation.key );\n\n\t\t\tadditionalAttributeDelta.addOperation( new AttributeOperation(\n\t\t\t\tnew Range( rangeStart, rangeEnd ),\n\t\t\t\toperation.key,\n\t\t\t\toldValue === undefined ? null : oldValue,\n\t\t\t\toperation.newValue,\n\t\t\t\t0\n\t\t\t) );\n\n\t\t\tdeltas.push( additionalAttributeDelta );\n\n\t\t\tbreak;\n\t\t}\n\t}\n\n\treturn deltas;\n} );\n\n// Add special case for InsertDelta x MergeDelta transformation.\naddTransformationCase( InsertDelta, MergeDelta, ( a, b, isStrong ) => {\n\t// If insert is applied at the same position where merge happened, we reverse the merge (we treat it like it\n\t// didn't happen) and then apply the original insert operation. This is \"mirrored\" in MergeDelta x InsertDelta\n\t// transformation below, where we simply do not apply MergeDelta.\n\tif ( a.position.isEqual( b.position ) ) {\n\t\treturn [\n\t\t\tb.getReversed(),\n\t\t\ta.clone()\n\t\t];\n\t}\n\n\treturn defaultTransform( a, b, isStrong );\n} );\n\n// Add special case for MarkerDelta x SplitDelta\naddTransformationCase( MarkerDelta, SplitDelta, ( a, b, isStrong ) => {\n\t// If marked range is split, we need to fix it:\n\t// ab[cdef]gh   ==>  ab[cd\n\t//                   ef]gh\n\t// To mimic what normally happens with LiveRange if you split it.\n\n\t// Mote: MarkerDelta can't get split to two deltas, neither can MarkerOperation.\n\tconst transformedDelta = defaultTransform( a, b, isStrong )[ 0 ];\n\tconst transformedOp = transformedDelta.operations[ 0 ];\n\n\t// Fix positions, if needed.\n\tconst markerOp = a.operations[ 0 ];\n\n\tconst source = b.position;\n\tconst target = b._moveOperation.targetPosition;\n\n\tif ( markerOp.oldRange.containsPosition( b.position ) ) {\n\t\ttransformedOp.oldRange.end = markerOp.oldRange.end._getCombined( source, target );\n\t}\n\n\tif ( markerOp.newRange.containsPosition( b.position ) ) {\n\t\ttransformedOp.newRange.end = markerOp.newRange.end._getCombined( source, target );\n\t}\n\n\treturn [ transformedDelta ];\n} );\n\n// Add special case for MoveDelta x MergeDelta transformation.\naddTransformationCase( MoveDelta, MergeDelta, ( a, b, isStrong ) => {\n\t// If move delta is supposed to move a node that has been merged, we reverse the merge (we treat it like it\n\t// didn't happen) and then apply the original move operation. This is \"mirrored\" in MergeDelta x MoveDelta\n\t// transformation below, where we simply do not apply MergeDelta.\n\n\tconst operateInSameParent =\n\t\ta.sourcePosition.root == b.position.root &&\n\t\tcompareArrays( a.sourcePosition.getParentPath(), b.position.getParentPath() ) === 'same';\n\n\tconst mergeInsideMoveRange = a.sourcePosition.offset <= b.position.offset && a.sourcePosition.offset + a.howMany > b.position.offset;\n\n\tif ( operateInSameParent && mergeInsideMoveRange ) {\n\t\treturn [\n\t\t\tb.getReversed(),\n\t\t\ta.clone()\n\t\t];\n\t}\n\n\treturn defaultTransform( a, b, isStrong );\n} );\n\n// Add special case for MergeDelta x InsertDelta transformation.\naddTransformationCase( MergeDelta, InsertDelta, ( a, b, isStrong ) => {\n\t// If merge is applied at the same position where we inserted a range of nodes we cancel the merge as it's results\n\t// may be unexpected and very weird. Even if we do some \"magic\" we don't know what really are users' expectations.\n\tif ( a.position.isEqual( b.position ) ) {\n\t\treturn [ noDelta() ];\n\t}\n\n\treturn defaultTransform( a, b, isStrong );\n} );\n\n// Add special case for MergeDelta x MoveDelta transformation.\naddTransformationCase( MergeDelta, MoveDelta, ( a, b, isStrong ) => {\n\t// If merge is applied at the position between moved nodes we cancel the merge as it's results may be unexpected and\n\t// very weird. Even if we do some \"magic\" we don't know what really are users' expectations.\n\n\tconst operateInSameParent =\n\t\ta.position.root == b.sourcePosition.root &&\n\t\tcompareArrays( a.position.getParentPath(), b.sourcePosition.getParentPath() ) === 'same';\n\n\tconst mergeInsideMoveRange = b.sourcePosition.offset <= a.position.offset && b.sourcePosition.offset + b.howMany > a.position.offset;\n\n\tif ( operateInSameParent && mergeInsideMoveRange ) {\n\t\treturn [ noDelta() ];\n\t}\n\n\treturn defaultTransform( a, b, isStrong );\n} );\n\n// Add special case for SplitDelta x SplitDelta transformation.\naddTransformationCase( SplitDelta, SplitDelta, ( a, b, isStrong ) => {\n\tconst pathA = a.position.getParentPath();\n\tconst pathB = b.position.getParentPath();\n\n\t// The special case is for splits inside the same parent.\n\tif ( compareArrays( pathA, pathB ) == 'same' ) {\n\t\tif ( a.position.offset == b.position.offset ) {\n\t\t\t// We are applying split at the position where split already happened. Additional split is not needed.\n\t\t\treturn [ noDelta() ];\n\t\t} else if ( a.position.offset < b.position.offset ) {\n\t\t\t// Incoming split delta splits at closer offset. So we simply have to once again split the same node,\n\t\t\t// but since it was already split (at further offset) there are less child nodes in the split node.\n\t\t\t// This means that we have to update `howMany` parameter of `MoveOperation` for that delta.\n\n\t\t\tconst delta = a.clone();\n\t\t\tdelta._moveOperation.howMany = b.position.offset - a.position.offset;\n\n\t\t\t// If both SplitDeltas are taking their nodes from graveyard, we have to transform their ReinsertOperations.\n\t\t\tif (\n\t\t\t\ta._cloneOperation instanceof ReinsertOperation &&\n\t\t\t\tb._cloneOperation instanceof ReinsertOperation &&\n\t\t\t\ta._cloneOperation.sourcePosition.offset > b._cloneOperation.sourcePosition.offset\n\t\t\t) {\n\t\t\t\tdelta._cloneOperation.sourcePosition.offset--;\n\t\t\t}\n\n\t\t\treturn [ delta ];\n\t\t} else {\n\t\t\t// Incoming split delta splits at further offset. We have to simulate that we are not splitting the\n\t\t\t// original split node but the node after it, which got created by the other split delta.\n\t\t\t// To do so, we increment offsets so it looks like the split delta was created in the next node.\n\n\t\t\tconst delta = a.clone();\n\n\t\t\tdelta._cloneOperation.position.offset++;\n\t\t\tdelta._moveOperation.sourcePosition.path[ delta._moveOperation.sourcePosition.path.length - 2 ]++;\n\t\t\tdelta._moveOperation.targetPosition.path[ delta._moveOperation.targetPosition.path.length - 2 ]++;\n\t\t\tdelta._moveOperation.sourcePosition.offset = a.position.offset - b.position.offset;\n\n\t\t\t// If both SplitDeltas are taking their nodes from graveyard, we have to transform their ReinsertOperations.\n\t\t\tif (\n\t\t\t\ta._cloneOperation instanceof ReinsertOperation &&\n\t\t\t\tb._cloneOperation instanceof ReinsertOperation &&\n\t\t\t\ta._cloneOperation.sourcePosition.offset > b._cloneOperation.sourcePosition.offset\n\t\t\t) {\n\t\t\t\tdelta._cloneOperation.sourcePosition.offset--;\n\t\t\t}\n\n\t\t\treturn [ delta ];\n\t\t}\n\t}\n\n\treturn defaultTransform( a, b, isStrong );\n} );\n\n// Add special case for SplitDelta x UnwrapDelta transformation.\naddTransformationCase( SplitDelta, UnwrapDelta, ( a, b, isStrong ) => {\n\t// If incoming split delta tries to split a node that just got unwrapped, there is actually nothing to split,\n\t// so we discard that delta.\n\tif ( compareArrays( b.position.path, a.position.getParentPath() ) === 'same' ) {\n\t\treturn [ noDelta() ];\n\t}\n\n\treturn defaultTransform( a, b, isStrong );\n} );\n\n// Add special case for SplitDelta x WrapDelta transformation.\naddTransformationCase( SplitDelta, WrapDelta, ( a, b, isStrong ) => {\n\t// If split is applied at the position between wrapped nodes, we cancel the split as it's results may be unexpected and\n\t// very weird. Even if we do some \"magic\" we don't know what really are users' expectations.\n\n\tconst operateInSameParent = compareArrays( a.position.getParentPath(), b.range.start.getParentPath() ) === 'same';\n\tconst splitInsideWrapRange = b.range.start.offset < a.position.offset && b.range.end.offset >= a.position.offset;\n\n\tif ( operateInSameParent && splitInsideWrapRange ) {\n\t\treturn [ noDelta() ];\n\t} else if ( compareArrays( a.position.getParentPath(), b.range.end.getShiftedBy( -1 ).path ) === 'same' ) {\n\t\t// Split position is directly inside the last node from wrap range.\n\t\t// If that's the case, we manually change split delta so it will \"target\" inside the wrapping element.\n\t\t// By doing so we will be inserting split node right to the original node which feels natural and is a good UX.\n\t\tconst delta = a.clone();\n\n\t\t// 1. Fix insert operation position.\n\t\t// Node to split is the last children of the wrapping element.\n\t\t// Wrapping element is the element inserted by WrapDelta (re)insert operation.\n\t\t// It is inserted after the wrapped range, but the wrapped range will be moved inside it.\n\t\t// Having this in mind, it is correct to use wrapped range start position as the position before wrapping element.\n\t\tconst splitNodePos = Position.createFromPosition( b.range.start );\n\t\t// Now, `splitNodePos` points before wrapping element.\n\t\t// To get a position before last children of that element, we expand position's `path` member by proper offset.\n\t\tsplitNodePos.path.push( b.howMany - 1 );\n\n\t\t// SplitDelta insert operation position should be right after the node we split.\n\t\tconst insertPos = splitNodePos.getShiftedBy( 1 );\n\t\tdelta._cloneOperation.position = insertPos;\n\n\t\t// 2. Fix move operation source position.\n\t\t// Nodes moved by SplitDelta will be moved from new position, modified by WrapDelta.\n\t\t// To obtain that new position, `splitNodePos` will be used, as this is the node we are extracting children from.\n\t\tconst sourcePos = Position.createFromPosition( splitNodePos );\n\t\t// Nothing changed inside split node so it is correct to use the original split position offset.\n\t\tsourcePos.path.push( a.position.offset );\n\t\tdelta._moveOperation.sourcePosition = sourcePos;\n\n\t\t// 3. Fix move operation target position.\n\t\t// SplitDelta move operation target position should be inside the node inserted by operation above.\n\t\t// Since the node is empty, we will insert at offset 0.\n\t\tconst targetPos = Position.createFromPosition( insertPos );\n\t\ttargetPos.path.push( 0 );\n\t\tdelta._moveOperation.targetPosition = targetPos;\n\n\t\treturn [ delta ];\n\t}\n\n\treturn defaultTransform( a, b, isStrong );\n} );\n\n// Add special case for SplitDelta x WrapDelta transformation.\naddTransformationCase( SplitDelta, AttributeDelta, ( a, b ) => {\n\ta = a.clone();\n\n\tconst splitPosition = new Position( a.position.root, a.position.path.slice( 0, -1 ) );\n\n\tif ( a._cloneOperation instanceof InsertOperation ) {\n\t\t// If element to split had it's attribute changed, we have to reflect this change in an element\n\t\t// that is in SplitDelta's InsertOperation.\n\t\tfor ( let operation of b.operations ) {\n\t\t\tif ( operation.range.containsPosition( splitPosition ) || operation.range.start.isEqual( splitPosition ) ) {\n\t\t\t\tif ( operation.newValue !== null ) {\n\t\t\t\t\ta._cloneOperation.nodes.getNode( 0 ).setAttribute( operation.key, operation.newValue );\n\t\t\t\t} else {\n\t\t\t\t\ta._cloneOperation.nodes.getNode( 0 ).removeAttribute( operation.key );\n\t\t\t\t}\n\n\t\t\t\tbreak;\n\t\t\t}\n\t\t}\n\t}\n\n\treturn [ a ];\n} );\n\n// Add special case for UnwrapDelta x SplitDelta transformation.\naddTransformationCase( UnwrapDelta, SplitDelta, ( a, b, isStrong ) => {\n\t// If incoming unwrap delta tries to unwrap node that got split we should unwrap the original node and the split copy.\n\t// This can be achieved either by reverting split and applying unwrap to singular node, or creating additional unwrap delta.\n\tif ( compareArrays( a.position.path, b.position.getParentPath() ) === 'same' ) {\n\t\tconst transformed = [\n\t\t\tb.getReversed(),\n\t\t\ta.clone()\n\t\t];\n\n\t\t// It's a kind of magic-magic-magic-maaaaagiiic!\n\t\ttransformed[ 1 ].operations[ 1 ].targetPosition.path[ 0 ]++;\n\t\t// But seriously, we have to fix RemoveOperation in the second delta because reversed UnwrapDelta creates\n\t\t// MergeDelta which also has RemoveOperation. Those two operations cannot point to the same \"holder\" element\n\t\t// in the graveyard, so we fix it by hand. This is the only case where it happens in \"special\" transformation\n\t\t// cases, and it won't happen for \"default\" transformation apart of RemoveDelta, where it is okay.\n\n\t\treturn transformed;\n\t}\n\n\treturn defaultTransform( a, b, isStrong );\n} );\n\n// Add special case for WeakInsertDelta x AttributeDelta transformation.\naddTransformationCase( WeakInsertDelta, AttributeDelta, ( a, b ) => {\n\t// If nodes are weak-inserted into attribute delta range, we need to apply changes from attribute delta on them.\n\tconst deltas = [ a.clone() ];\n\n\tif ( b.range.containsPosition( a.position ) ) {\n\t\tdeltas.push( _getComplementaryAttrDelta( a, b ) );\n\t}\n\n\treturn deltas;\n} );\n\n// Add special case for WrapDelta x SplitDelta transformation.\naddTransformationCase( WrapDelta, SplitDelta, ( a, b, isStrong ) => {\n\t// If incoming wrap delta tries to wrap range that contains split position, we have to cancel the split and apply\n\t// the wrap. Since split was already applied, we have to revert it.\n\n\tconst operateInSameParent = compareArrays( a.range.start.getParentPath(), b.position.getParentPath() ) === 'same';\n\tconst splitInsideWrapRange = a.range.start.offset < b.position.offset && a.range.end.offset >= b.position.offset;\n\n\tif ( operateInSameParent && splitInsideWrapRange ) {\n\t\treturn [\n\t\t\tb.getReversed(),\n\t\t\ta.clone()\n\t\t];\n\t} else if ( compareArrays( b.position.getParentPath(), a.range.end.getShiftedBy( -1 ).path ) === 'same' ) {\n\t\tconst delta = a.clone();\n\n\t\t// Move wrapping element insert position one node further so it is after the split node insertion.\n\t\tdelta._insertOperation.position.offset++;\n\n\t\t// Include the split node copy.\n\t\tdelta._moveOperation.howMany++;\n\n\t\t// Change the path to wrapping element in move operation.\n\t\tdelta._moveOperation.targetPosition.path[ delta._moveOperation.targetPosition.path.length - 2 ]++;\n\n\t\treturn [ delta ];\n\t}\n\n\treturn defaultTransform( a, b, isStrong );\n} );\n\n// Add special case for RenameDelta x SplitDelta transformation.\naddTransformationCase( RenameDelta, SplitDelta, ( a, b, isStrong ) => {\n\tconst splitPosition = new Position( b.position.root, b.position.path.slice( 0, -1 ) );\n\n\tconst deltas = defaultTransform( a, b, isStrong );\n\n\tif ( a.operations[ 0 ].position.isEqual( splitPosition ) ) {\n\t\t// If a node that has been split has it's name changed, we should also change name of\n\t\t// the node created during splitting.\n\t\tconst additionalRenameDelta = a.clone();\n\t\tadditionalRenameDelta.operations[ 0 ].position = a.operations[ 0 ].position.getShiftedBy( 1 );\n\n\t\tdeltas.push( additionalRenameDelta );\n\t}\n\n\treturn deltas;\n} );\n\n// Add special case for SplitDelta x RenameDelta transformation.\naddTransformationCase( SplitDelta, RenameDelta, ( a, b ) => {\n\ta = a.clone();\n\n\tconst splitPosition = new Position( a.position.root, a.position.path.slice( 0, -1 ) );\n\n\tif ( a._cloneOperation instanceof InsertOperation ) {\n\t\t// If element to split had it's name changed, we have to reflect this change in an element\n\t\t// that is in SplitDelta's InsertOperation.\n\t\tif ( b.operations[ 0 ].position.isEqual( splitPosition ) ) {\n\t\t\ta._cloneOperation.nodes.getNode( 0 ).name = b.operations[ 0 ].newName;\n\t\t}\n\t}\n\n\treturn [ a ];\n} );\n\n// Add special case for RemoveDelta x SplitDelta transformation.\naddTransformationCase( RemoveDelta, SplitDelta, ( a, b, isStrong ) => {\n\tconst deltas = defaultTransform( a, b, isStrong );\n\tconst insertPosition = b._cloneOperation.position;\n\n\t// In case if `defaultTransform` returned more than one delta.\n\tfor ( let delta of deltas ) {\n\t\tfor ( let operation of delta.operations ) {\n\t\t\tconst rangeEnd = operation.sourcePosition.getShiftedBy( operation.howMany );\n\n\t\t\tif ( rangeEnd.isEqual( insertPosition ) ) {\n\t\t\t\toperation.howMany += 1;\n\t\t\t}\n\t\t}\n\t}\n\n\treturn deltas;\n} );\n\n// Add special case for SplitDelta x RemoveDelta transformation.\naddTransformationCase( SplitDelta, RemoveDelta, ( a, b, isStrong ) => {\n\tb = b.clone();\n\n\tconst insertPosition = a._cloneOperation.position;\n\n\tfor ( let operation of b.operations ) {\n\t\tconst rangeEnd = operation.sourcePosition.getShiftedBy( operation.howMany );\n\n\t\tif ( rangeEnd.isEqual( insertPosition ) ) {\n\t\t\toperation.howMany += 1;\n\t\t}\n\t}\n\n\treturn defaultTransform( a, b, isStrong );\n} );\n\n// Helper function for `AttributeDelta` class transformations.\n// Creates an attribute delta that sets attribute from given `attributeDelta` on nodes from given `weakInsertDelta`.\nfunction _getComplementaryAttrDelta( weakInsertDelta, attributeDelta ) {\n\tconst complementaryAttrDelta = new AttributeDelta();\n\tconst nodes = weakInsertDelta.nodes;\n\n\t// At the beginning we store the attribute value from the first node on `weakInsertDelta` node list.\n\tlet val = nodes.getNode( 0 ).getAttribute( attributeDelta.key );\n\n\t// This stores the last index of `weakInsertDelta` node list where the attribute value was different\n\t// than in the previous node. We need it to create separate `AttributeOperation`s for nodes with different attributes.\n\tlet lastOffset = 0;\n\t// Sum of offsets of already processed nodes.\n\tlet offsetSum = nodes.getNode( 0 ).offsetSize;\n\n\tfor ( let i = 1; i < nodes.length; i++ ) {\n\t\tconst node = nodes.getNode( i );\n\t\tconst nodeAttrVal = node.getAttribute( attributeDelta.key );\n\n\t\t// If previous node has different attribute value, we will create an operation to the point before current node.\n\t\t// So all nodes with the same attributes up to this point will be included in one `AttributeOperation`.\n\t\tif ( nodeAttrVal != val ) {\n\t\t\t// New operation is created only when it is needed. If given node already has proper value for this\n\t\t\t// attribute we simply skip it without adding a new operation.\n\t\t\tif ( val != attributeDelta.value ) {\n\t\t\t\taddOperation();\n\t\t\t}\n\n\t\t\tval = nodeAttrVal;\n\t\t\tlastOffset = offsetSum;\n\t\t}\n\n\t\toffsetSum = offsetSum + node.offsetSize;\n\t}\n\n\t// At the end we have to add additional `AttributeOperation` for the last part of node list. If all nodes on the\n\t// node list had same attributes, this will be the only operation added to the delta.\n\taddOperation();\n\n\treturn complementaryAttrDelta;\n\n\tfunction addOperation() {\n\t\tconst range = new Range(\n\t\t\tweakInsertDelta.position.getShiftedBy( lastOffset ),\n\t\t\tweakInsertDelta.position.getShiftedBy( offsetSum )\n\t\t);\n\n\t\tconst attrOperation = new AttributeOperation( range, attributeDelta.key, val, attributeDelta.value, 0 );\n\t\tcomplementaryAttrDelta.addOperation( attrOperation );\n\t}\n}\n\n// This is \"no-op\" delta, it has no type and only no-operation, it basically does nothing.\n// It is used when we don't want to apply changes but still we need to return a delta.\nfunction noDelta() {\n\tlet noDelta = new Delta();\n\n\t// BaseVersion will be fixed later anyway.\n\tnoDelta.addOperation( new NoOperation( 0 ) );\n\n\treturn noDelta;\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/delta/basic-transformations.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/delta/markerdelta\n */\n\nimport Delta from './delta';\nimport DeltaFactory from './deltafactory';\nimport { register } from '../batch';\nimport MarkerOperation from '../operation/markeroperation';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/**\n * @classdesc\n * To provide specific OT behavior and better collisions solving, the {@link module:engine/model/batch~Batch#setMarker Batch#setMarker}\n * and {@link module:engine/model/batch~Batch#removeMarker Batch#removeMarker} methods use the `MarkerDelta` class which inherits\n * from the `Delta` class and may overwrite some methods.\n */\nexport default class MarkerDelta extends Delta {\n\t/**\n\t * @inheritDoc\n\t */\n\tget type() {\n\t\treturn 'marker';\n\t}\n\n\t/**\n\t * A class that will be used when creating reversed delta.\n\t *\n\t * @private\n\t * @type {Function}\n\t */\n\tget _reverseDeltaClass() {\n\t\treturn MarkerDelta;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get className() {\n\t\treturn 'engine.model.delta.MarkerDelta';\n\t}\n}\n\n/**\n * Adds or updates {@link module:engine/model/markercollection~Marker marker} with given name to given `range`.\n *\n * If passed name is a name of already existing marker (or {@link module:engine/model/markercollection~Marker Marker} instance\n * is passed), `range` parameter may be omitted. In this case marker will not be updated in\n * {@link module:engine/model/document~Document#markers document marker collection}. However the marker will be added to\n * the document history. This may be important for other features, like undo. From document history point of view, it will\n * look like the marker was created and added to the document at the moment when it is set using this method.\n *\n * This is useful if the marker is created before it can be added to document history (e.g. a feature creating the marker\n * is waiting for additional data, etc.). In this case, the marker may be first created directly through\n * {@link module:engine/model/markercollection~MarkerCollection MarkerCollection API} and only later added using `Batch` API.\n *\n * @chainable\n * @method module:engine/model/batch~Batch#setMarker\n * @param {module:engine/model/markercollection~Marker|String} markerOrName Marker or marker name to add or update.\n * @param {module:engine/model/range~Range} [newRange] Marker range.\n */\nregister( 'setMarker', function( markerOrName, newRange ) {\n\tconst name = typeof markerOrName == 'string' ? markerOrName : markerOrName.name;\n\tconst currentMarker = this.document.markers.get( name );\n\n\tif ( !newRange && !currentMarker ) {\n\t\t/**\n\t\t * Range parameter is required when adding a new marker.\n\t\t *\n\t\t * @error batch-setMarker-no-range\n\t\t */\n\t\tthrow new CKEditorError( 'batch-setMarker-no-range: Range parameter is required when adding a new marker.' );\n\t}\n\n\tconst currentRange = currentMarker ? currentMarker.getRange() : null;\n\n\tif ( !newRange ) {\n\t\t// If `newRange` is not given, treat this as synchronizing existing marker.\n\t\t// Create `MarkerOperation` with `oldRange` set to `null`, so reverse operation will remove the marker.\n\t\taddOperation( this, name, null, currentRange );\n\t} else {\n\t\t// Just change marker range.\n\t\taddOperation( this, name, currentRange, newRange );\n\t}\n\n\treturn this;\n} );\n\n/**\n * Removes given {@link module:engine/model/markercollection~Marker marker} or marker with given name.\n *\n * @chainable\n * @method module:engine/model/batch~Batch#removeMarker\n * @param {module:engine/model/markercollection~Marker|String} markerOrName Marker or marker name to remove.\n */\nregister( 'removeMarker', function( markerOrName ) {\n\tconst name = typeof markerOrName == 'string' ? markerOrName : markerOrName.name;\n\n\tif ( !this.document.markers.has( name ) ) {\n\t\t/**\n\t\t * Trying to remove marker that does not exist.\n\t\t *\n\t\t * @error batch-removeMarker-no-marker\n\t\t */\n\t\tthrow new CKEditorError( 'batch-removeMarker-no-marker: Trying to remove marker that does not exist.' );\n\t}\n\n\tconst oldRange = this.document.markers.get( name ).getRange();\n\n\taddOperation( this, name, oldRange, null );\n\n\treturn this;\n} );\n\nfunction addOperation( batch, name, oldRange, newRange ) {\n\tconst doc = batch.document;\n\tconst delta = new MarkerDelta();\n\n\tconst operation = new MarkerOperation( name, oldRange, newRange, doc.markers, doc.version );\n\n\tbatch.addDelta( delta );\n\tdelta.addOperation( operation );\n\tdoc.applyOperation( operation );\n}\n\nDeltaFactory.register( MarkerDelta );\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/delta/markerdelta.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/document\n */\n\n// Load all basic deltas and transformations, they register themselves, but they need to be imported somewhere.\nimport deltas from './delta/basic-deltas'; // jshint ignore:line\nimport transformations from './delta/basic-transformations'; // jshint ignore:line\n\nimport Range from './range';\nimport Position from './position';\nimport RootElement from './rootelement';\nimport Batch from './batch';\nimport History from './history';\nimport LiveSelection from './liveselection';\nimport Schema from './schema';\nimport TreeWalker from './treewalker';\nimport MarkerCollection from './markercollection';\nimport clone from '@ckeditor/ckeditor5-utils/src/lib/lodash/clone';\nimport EmitterMixin from '@ckeditor/ckeditor5-utils/src/emittermixin';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\nimport { isInsideSurrogatePair, isInsideCombinedSymbol } from '@ckeditor/ckeditor5-utils/src/unicode';\n\nconst graveyardName = '$graveyard';\n\n/**\n * Document tree model describes all editable data in the editor. It may contain multiple\n * {@link module:engine/model/document~Document#roots root elements}, for example if the editor have multiple editable areas,\n * each area will be represented by the separate root.\n *\n * All changes in the document are done by {@link module:engine/model/operation/operation~Operation operations}. To create operations in\n * a simple way, use the {@link module:engine/model/batch~Batch} API, for example:\n *\n *\t\tdoc.batch().insert( position, nodes ).split( otherPosition );\n *\n * @see module:engine/model/document~Document#batch\n * @mixes module:utils/emittermixin~EmitterMixin\n */\nexport default class Document {\n\t/**\n\t * Creates an empty document instance with no {@link #roots} (other than\n\t * the {@link #graveyard graveyard root}).\n\t */\n\tconstructor() {\n\t\t/**\n\t\t * Document version. It starts from `0` and every operation increases the version number. It is used to ensure that\n\t\t * operations are applied on the proper document version.\n\t\t * If the {@link module:engine/model/operation/operation~Operation#baseVersion} will not match document version the\n\t\t * {@link module:utils/ckeditorerror~CKEditorError model-document-applyOperation-wrong-version} error is thrown.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Number}\n\t\t */\n\t\tthis.version = 0;\n\n\t\t/**\n\t\t * Schema for this document.\n\t\t *\n\t\t * @member {module:engine/model/schema~Schema}\n\t\t */\n\t\tthis.schema = new Schema();\n\n\t\t/**\n\t\t * Document's history.\n\t\t *\n\t\t * **Note:** Be aware that deltas applied to the document might get removed or changed.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/model/history~History}\n\t\t */\n\t\tthis.history = new History( this );\n\n\t\t/**\n\t\t * Document's markers' collection.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/model/markercollection~MarkerCollection}\n\t\t */\n\t\tthis.markers = new MarkerCollection();\n\n\t\t/**\n\t\t * Selection done on this document.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/model/liveselection~LiveSelection}\n\t\t */\n\t\tthis.selection = new LiveSelection( this );\n\n\t\t/**\n\t\t * Array of pending changes. See: {@link #enqueueChanges}.\n\t\t *\n\t\t * @private\n\t\t * @member {Array.<Function>}\n\t\t */\n\t\tthis._pendingChanges = [];\n\n\t\t/**\n\t\t * List of roots that are owned and managed by this document. Use {@link #createRoot} and\n\t\t * {@link #getRoot} to manipulate it.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Map}\n\t\t */\n\t\tthis.roots = new Map();\n\n\t\t// Add events that will ensure selection correctness.\n\t\tthis.selection.on( 'change:range', () => {\n\t\t\tfor ( let range of this.selection.getRanges() ) {\n\t\t\t\tif ( !this._validateSelectionRange( range ) ) {\n\t\t\t\t\t/**\n\t\t\t\t\t * Range from document selection starts or ends at incorrect position.\n\t\t\t\t\t *\n\t\t\t\t\t * @error document-selection-wrong-position\n\t\t\t\t\t * @param {module:engine/model/range~Range} range\n\t\t\t\t\t */\n\t\t\t\t\tthrow new CKEditorError( 'document-selection-wrong-position: ' +\n\t\t\t\t\t\t'Range from document selection starts or ends at incorrect position.', { range } );\n\t\t\t\t}\n\t\t\t}\n\t\t} );\n\n\t\t// Graveyard tree root. Document always have a graveyard root, which stores removed nodes.\n\t\tthis.createRoot( '$root', graveyardName );\n\t}\n\n\t/**\n\t * Graveyard tree root. Document always have a graveyard root, which stores removed nodes.\n\t *\n\t * @readonly\n\t * @member {module:engine/model/rootelement~RootElement}\n\t */\n\tget graveyard() {\n\t\treturn this.getRoot( graveyardName );\n\t}\n\n\t/**\n\t * This is the entry point for all document changes. All changes on the document are done using\n\t * {@link module:engine/model/operation/operation~Operation operations}. To create operations in the simple way use the\n\t * {@link module:engine/model/batch~Batch} API available via {@link #batch} method.\n\t *\n\t * @fires event:change\n\t * @param {module:engine/model/operation/operation~Operation} operation Operation to be applied.\n\t */\n\tapplyOperation( operation ) {\n\t\tif ( operation.baseVersion !== this.version ) {\n\t\t\t/**\n\t\t\t * Only operations with matching versions can be applied.\n\t\t\t *\n\t\t\t * @error document-applyOperation-wrong-version\n\t\t\t * @param {module:engine/model/operation/operation~Operation} operation\n\t\t\t */\n\t\t\tthrow new CKEditorError(\n\t\t\t\t'model-document-applyOperation-wrong-version: Only operations with matching versions can be applied.',\n\t\t\t\t{ operation: operation } );\n\t\t}\n\n\t\tlet changes = operation._execute();\n\n\t\tthis.version++;\n\n\t\tthis.history.addDelta( operation.delta );\n\n\t\tif ( changes ) {\n\t\t\t// `NoOperation` returns no changes, do not fire event for it.\n\t\t\tthis.fire( 'change', operation.type, changes, operation.delta.batch, operation.delta.type );\n\t\t}\n\t}\n\n\t/**\n\t * Creates a {@link module:engine/model/batch~Batch} instance which allows to change the document.\n\t *\n\t * @param {String} [type] Batch type. See {@link module:engine/model/batch~Batch#type}.\n\t * @returns {module:engine/model/batch~Batch} Batch instance.\n\t */\n\tbatch( type ) {\n\t\treturn new Batch( this, type );\n\t}\n\n\t/**\n\t * Creates a new top-level root.\n\t *\n\t * @param {String} [elementName='$root'] Element name. Defaults to `'$root'` which also have\n\t * some basic schema defined (`$block`s are allowed inside the `$root`). Make sure to define a proper\n\t * schema if you use a different name.\n\t * @param {String} [rootName='main'] Unique root name.\n\t * @returns {module:engine/model/rootelement~RootElement} Created root.\n\t */\n\tcreateRoot( elementName = '$root', rootName = 'main' ) {\n\t\tif ( this.roots.has( rootName ) ) {\n\t\t\t/**\n\t\t\t * Root with specified name already exists.\n\t\t\t *\n\t\t\t * @error document-createRoot-name-exists\n\t\t\t * @param {module:engine/model/document~Document} doc\n\t\t\t * @param {String} name\n\t\t\t */\n\t\t\tthrow new CKEditorError(\n\t\t\t\t'model-document-createRoot-name-exists: Root with specified name already exists.',\n\t\t\t\t{ name: rootName }\n\t\t\t);\n\t\t}\n\n\t\tconst root = new RootElement( this, elementName, rootName );\n\t\tthis.roots.set( rootName, root );\n\n\t\treturn root;\n\t}\n\n\t/**\n\t * Removes all events listeners set by document instance.\n\t */\n\tdestroy() {\n\t\tthis.selection.destroy();\n\t\tthis.stopListening();\n\t}\n\n\t/**\n\t * Enqueues document changes. Any changes to be done on document (mostly using {@link #batch}\n\t * should be placed in the queued callback. If no other plugin is changing document at the moment, the callback will be\n\t * called immediately. Otherwise it will wait for all previously queued changes to finish happening. This way\n\t * queued callback will not interrupt other callbacks.\n\t *\n\t * When all queued changes are done {@link #event:changesDone} event is fired.\n\t *\n\t * @fires changesDone\n\t * @param {Function} callback Callback to enqueue.\n\t */\n\tenqueueChanges( callback ) {\n\t\tthis._pendingChanges.push( callback );\n\n\t\tif ( this._pendingChanges.length == 1 ) {\n\t\t\twhile ( this._pendingChanges.length ) {\n\t\t\t\tthis._pendingChanges[ 0 ]();\n\t\t\t\tthis._pendingChanges.shift();\n\t\t\t}\n\n\t\t\tthis.fire( 'changesDone' );\n\t\t}\n\t}\n\n\t/**\n\t * Returns top-level root by its name.\n\t *\n\t * @param {String} [name='main'] Unique root name.\n\t * @returns {module:engine/model/rootelement~RootElement} Root registered under given name.\n\t */\n\tgetRoot( name = 'main' ) {\n\t\tif ( !this.roots.has( name ) ) {\n\t\t\t/**\n\t\t\t * Root with specified name does not exist.\n\t\t\t *\n\t\t\t * @error document-getRoot-root-not-exist\n\t\t\t * @param {String} name\n\t\t\t */\n\t\t\tthrow new CKEditorError(\n\t\t\t\t'model-document-getRoot-root-not-exist: Root with specified name does not exist.',\n\t\t\t\t{ name: name }\n\t\t\t);\n\t\t}\n\n\t\treturn this.roots.get( name );\n\t}\n\n\t/**\n\t * Checks if root with given name is defined.\n\t *\n\t * @param {String} name Name of root to check.\n\t * @returns {Boolean}\n\t */\n\thasRoot( name ) {\n\t\treturn this.roots.has( name );\n\t}\n\n\t/**\n\t * Returns array with names of all roots (without the {@link #graveyard}) added to the document.\n\t *\n\t * @returns {Array.<String>} Roots names.\n\t */\n\tgetRootNames() {\n\t\treturn Array.from( this.roots.keys() ).filter( ( name ) => name != graveyardName );\n\t}\n\n\t/**\n\t * Basing on given `position`, finds and returns a {@link module:engine/model/range~Range Range} instance that is\n\t * nearest to that `position` and is a correct range for selection.\n\t *\n\t * Correct selection range might be collapsed - when it's located in position where text node can be placed.\n\t * Non-collapsed range is returned when selection can be placed around element marked as \"object\" in\n\t * {@link module:engine/model/schema~Schema schema}.\n\t *\n\t * Direction of searching for nearest correct selection range can be specified as:\n\t * * `both` - searching will be performed in both ways,\n\t * * `forward` - searching will be performed only forward,\n\t * * `backward` - searching will be performed only backward.\n\t *\n\t * When valid selection range cannot be found, `null` is returned.\n\t *\n\t * @param {module:engine/model/position~Position} position Reference position where new selection range should be looked for.\n\t * @param {'both'|'forward'|'backward'} [direction='both'] Search direction.\n\t * @returns {module:engine/model/range~Range|null} Nearest selection range or `null` if one cannot be found.\n\t */\n\tgetNearestSelectionRange( position, direction = 'both' ) {\n\t\t// Return collapsed range if provided position is valid.\n\t\tif ( this.schema.check( { name: '$text', inside: position } ) ) {\n\t\t\treturn new Range( position );\n\t\t}\n\n\t\tlet backwardWalker;\n\t\tlet forwardWalker;\n\n\t\tif ( direction == 'both' || direction == 'backward' ) {\n\t\t\tbackwardWalker = new TreeWalker( { startPosition: position, direction: 'backward' } );\n\t\t}\n\n\t\tif ( direction == 'both' || direction == 'forward' ) {\n\t\t\tforwardWalker = new TreeWalker( { startPosition: position } );\n\t\t}\n\n\t\tfor ( let data of combineWalkers( backwardWalker, forwardWalker ) ) {\n\t\t\tconst type = ( data.walker == backwardWalker ? 'elementEnd' : 'elementStart' );\n\t\t\tconst value = data.value;\n\n\t\t\tif ( value.type == type && this.schema.objects.has( value.item.name ) ) {\n\t\t\t\treturn Range.createOn( value.item );\n\t\t\t}\n\n\t\t\tif ( this.schema.check( { name: '$text', inside: value.nextPosition } ) ) {\n\t\t\t\treturn new Range( value.nextPosition );\n\t\t\t}\n\t\t}\n\n\t\treturn null;\n\t}\n\n\t/**\n\t * Custom toJSON method to solve child-parent circular dependencies.\n\t *\n\t * @returns {Object} Clone of this object with the document property changed to string.\n\t */\n\ttoJSON() {\n\t\tconst json = clone( this );\n\n\t\t// Due to circular references we need to remove parent reference.\n\t\tjson.selection = '[engine.model.LiveSelection]';\n\n\t\treturn json;\n\t}\n\n\t/**\n\t * Returns default root for this document which is either the first root that was added to the the document using\n\t * {@link #createRoot} or the {@link #graveyard graveyard root} if no other roots were created.\n\t *\n\t * @protected\n\t * @returns {module:engine/model/rootelement~RootElement} The default root for this document.\n\t */\n\t_getDefaultRoot() {\n\t\tfor ( let root of this.roots.values() ) {\n\t\t\tif ( root !== this.graveyard ) {\n\t\t\t\treturn root;\n\t\t\t}\n\t\t}\n\n\t\treturn this.graveyard;\n\t}\n\n\t/**\n\t * Returns a default range for this selection. The default range is a collapsed range that starts and ends\n\t * at the beginning of this selection's document's {@link #_getDefaultRoot default root}.\n\t *\n\t * @protected\n\t * @returns {module:engine/model/range~Range}\n\t */\n\t_getDefaultRange() {\n\t\tconst defaultRoot = this._getDefaultRoot();\n\n\t\t// Find the first position where the selection can be put.\n\t\tconst position = new Position( defaultRoot, [ 0 ] );\n\t\tconst nearestRange = this.getNearestSelectionRange( position );\n\n\t\t// If valid selection range is not found - return range collapsed at the beginning of the root.\n\t\treturn nearestRange || new Range( position );\n\t}\n\n\t/**\n\t * Checks whether given {@link module:engine/model/range~Range range} is a valid range for\n\t * {@link #selection document's selection}.\n\t *\n\t * @private\n\t * @param {module:engine/model/range~Range} range Range to check.\n\t * @returns {Boolean} `true` if `range` is valid, `false` otherwise.\n\t */\n\t_validateSelectionRange( range ) {\n\t\treturn validateTextNodePosition( range.start ) && validateTextNodePosition( range.end );\n\t}\n\n\t/**\n\t * Fired when document changes by applying an operation.\n\t *\n\t * There are 5 types of change:\n\t *\n\t * * 'insert' when nodes are inserted,\n\t * * 'remove' when nodes are removed,\n\t * * 'reinsert' when remove is undone,\n\t * * 'move' when nodes are moved,\n\t * * 'addAttribute' when attributes are added,\n\t * * 'removeAttribute' when attributes are removed,\n\t * * 'changeAttribute' when attributes change,\n\t * * 'addRootAttribute' when attribute for root is added,\n\t * * 'removeRootAttribute' when attribute for root is removed,\n\t * * 'changeRootAttribute' when attribute for root changes.\n\t *\n\t * @event change\n\t * @param {String} type Change type, possible option: 'insert', 'remove', 'reinsert', 'move', 'attribute'.\n\t * @param {Object} data Additional information about the change.\n\t * @param {module:engine/model/range~Range} data.range Range in model containing changed nodes. Note that the range state is\n\t * after changes has been done, i.e. for 'remove' the range will be in the {@link #graveyard graveyard root}.\n\t * This is `undefined` for \"...root...\" types.\n\t * @param {module:engine/model/position~Position} [data.sourcePosition] Change source position.\n\t * Exists for 'remove', 'reinsert' and 'move'.\n\t * Note that this position state is before changes has been done, i.e. for 'reinsert' the source position will be in the\n\t * {@link #graveyard graveyard root}.\n\t * @param {String} [data.key] Only for attribute types. Key of changed / inserted / removed attribute.\n\t * @param {*} [data.oldValue] Only for 'removeAttribute', 'removeRootAttribute', 'changeAttribute' or\n\t * 'changeRootAttribute' type.\n\t * @param {*} [data.newValue] Only for 'addAttribute', 'addRootAttribute', 'changeAttribute' or\n\t * 'changeRootAttribute' type.\n\t * @param {module:engine/model/rootelement~RootElement} [changeInfo.root] Root element which attributes got changed. This is defined\n\t * only for root types.\n\t * @param {module:engine/model/batch~Batch} batch A {@link module:engine/model/batch~Batch batch}\n\t * of changes which this change is a part of.\n\t */\n\n\t/**\n\t * Fired when all queued document changes are done. See {@link #enqueueChanges}.\n\t *\n\t * @event changesDone\n\t */\n}\n\nmix( Document, EmitterMixin );\n\n// Checks whether given range boundary position is valid for document selection, meaning that is not between\n// unicode surrogate pairs or base character and combining marks.\nfunction validateTextNodePosition( rangeBoundary ) {\n\tconst textNode = rangeBoundary.textNode;\n\n\tif ( textNode ) {\n\t\tconst data = textNode.data;\n\t\tconst offset = rangeBoundary.offset - textNode.startOffset;\n\n\t\treturn !isInsideSurrogatePair( data, offset ) && !isInsideCombinedSymbol( data, offset );\n\t}\n\n\treturn true;\n}\n\n// Generator function returning values from provided walkers, switching between them at each iteration. If only one walker\n// is provided it will return data only from that walker.\n//\n// @param {module:engine/module/treewalker~TreeWalker} [backward] Walker iterating in backward direction.\n// @param {module:engine/module/treewalker~TreeWalker} [forward] Walker iterating in forward direction.\n// @returns {Iterable.<Object>} Object returned at each iteration contains `value` and `walker` (informing which walker returned\n// given value) fields.\nfunction *combineWalkers( backward, forward ) {\n\tlet done = false;\n\n\twhile ( !done ) {\n\t\tdone = true;\n\n\t\tif ( backward ) {\n\t\t\tconst step = backward.next();\n\n\t\t\tif ( !step.done ) {\n\t\t\t\tdone = false;\n\t\t\t\tyield {\n\t\t\t\t\twalker: backward,\n\t\t\t\t\tvalue: step.value\n\t\t\t\t};\n\t\t\t}\n\t\t}\n\n\t\tif ( forward ) {\n\t\t\tconst step = forward.next();\n\n\t\t\tif ( !step.done ) {\n\t\t\t\tdone = false;\n\t\t\t\tyield {\n\t\t\t\t\twalker: forward,\n\t\t\t\t\tvalue: step.value\n\t\t\t\t};\n\t\t\t}\n\t\t}\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/document.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/history\n */\n\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/**\n * `History` keeps the track of all the deltas applied to the {@link module:engine/model/document~Document document}. Deltas stored in\n * `History` might get updated, split into more deltas or even removed. This is used mostly to compress history, instead\n * of keeping all deltas in a state in which they were applied.\n *\n * **Note:** deltas kept in `History` should be used only to transform deltas. It's not advised to use `History` to get\n * original delta basing on it's {@link module:engine/model/delta/delta~Delta#baseVersion baseVersion}. Also, after transforming a\n * delta by deltas from `History`,\n * fix it's base version accordingly (set it to {@link module:engine/model/document~Document#version document version}).\n */\nexport default class History {\n\t/**\n\t * Creates an empty History instance.\n\t */\n\tconstructor() {\n\t\t/**\n\t\t * Deltas added to the history.\n\t\t *\n\t\t * @protected\n\t\t * @member {Array.<module:engine/model/delta/delta~Delta>} module:engine/model/history~History#_deltas\n\t\t */\n\t\tthis._deltas = [];\n\n\t\t/**\n\t\t * Helper structure that maps added delta's base version to the index in {@link module:engine/model/history~History#_deltas}\n\t\t * at which the delta was added.\n\t\t *\n\t\t * @protected\n\t\t * @member {Map} module:engine/model/history~History#_historyPoints\n\t\t */\n\t\tthis._historyPoints = new Map();\n\t}\n\n\t/**\n\t * Adds delta to the history.\n\t *\n\t * @param {module:engine/model/delta/delta~Delta} delta Delta to add.\n\t */\n\taddDelta( delta ) {\n\t\tif ( delta.operations.length > 0 && !this._historyPoints.has( delta.baseVersion ) ) {\n\t\t\tconst index = this._deltas.length;\n\n\t\t\tthis._deltas[ index ] = delta;\n\t\t\tthis._historyPoints.set( delta.baseVersion, index );\n\t\t}\n\t}\n\n\t/**\n\t * Returns deltas added to the history.\n\t *\n\t * @param {Number} [from=0] Base version from which deltas should be returned (inclusive). Defaults to `0`, which means\n\t * that deltas from the first one will be returned.\n\t * @param {Number} [to=Number.POSITIVE_INFINITY] Base version up to which deltas should be returned (exclusive).\n\t * Defaults to `Number.POSITIVE_INFINITY` which means that deltas up to the last one will be returned.\n\t * @returns {Iterator.<module:engine/model/delta/delta~Delta>} Deltas added to the history.\n\t */\n\t*getDeltas( from = 0, to = Number.POSITIVE_INFINITY ) {\n\t\t// No deltas added, nothing to yield.\n\t\tif ( this._deltas.length === 0 ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Will throw if base version is incorrect.\n\t\tlet fromIndex = this._getIndex( from );\n\n\t\t// Base version is too low or too high and is not found in history.\n\t\tif ( fromIndex == -1 ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// We have correct `fromIndex` so let's iterate starting from it.\n\t\twhile ( fromIndex < this._deltas.length ) {\n\t\t\tconst delta = this._deltas[ fromIndex++ ];\n\n\t\t\tif ( delta.baseVersion >= to ) {\n\t\t\t\tbreak;\n\t\t\t}\n\n\t\t\tyield delta;\n\t\t}\n\t}\n\n\t/**\n\t * Returns one or more deltas from history that bases on given `baseVersion`. Most often it will be just\n\t * one delta, but if that delta got updated by multiple deltas, all of those updated deltas will be returned.\n\t *\n\t * @see module:engine/model/history~History#updateDelta\n\t * @param {Number} baseVersion Base version of the delta to retrieve.\n\t * @returns {Array.<module:engine/model/delta/delta~Delta>|null} Delta with given base version or null if no such delta is in history.\n\t */\n\tgetDelta( baseVersion ) {\n\t\tlet index = this._historyPoints.get( baseVersion );\n\n\t\tif ( index === undefined ) {\n\t\t\treturn null;\n\t\t}\n\n\t\tconst deltas = [];\n\n\t\tfor ( index; index < this._deltas.length; index++ ) {\n\t\t\tconst delta = this._deltas[ index ];\n\n\t\t\tif ( delta.baseVersion != baseVersion ) {\n\t\t\t\tbreak;\n\t\t\t}\n\n\t\t\tdeltas.push( delta );\n\t\t}\n\n\t\treturn deltas.length === 0 ? null : deltas;\n\t}\n\n\t/**\n\t * Removes delta from the history. This happens i.e., when a delta is undone by another delta. Both undone delta and\n\t * undoing delta should be removed so they won't have an impact on transforming other deltas.\n\t *\n\t * **Note:** using this method does not change the state of {@link module:engine/model/document~Document model}. It just affects\n\t * the state of `History`.\n\t *\n\t * **Note:** when some deltas are removed, deltas between them should probably get updated. See\n\t * {@link module:engine/model/history~History#updateDelta}.\n\t *\n\t * **Note:** if delta with `baseVersion` got {@link module:engine/model/history~History#updateDelta updated} by multiple\n\t * deltas, all updated deltas will be removed.\n\t *\n\t * @param {Number} baseVersion Base version of a delta to be removed.\n\t */\n\tremoveDelta( baseVersion ) {\n\t\tthis.updateDelta( baseVersion, [] );\n\t}\n\n\t/**\n\t * Substitutes delta in history by one or more given deltas.\n\t *\n\t * **Note:** if delta with `baseVersion` was already updated by multiple deltas, all updated deltas will be removed\n\t * and new deltas will be inserted at their position.\n\t *\n\t * **Note:** removed delta won't get updated.\n\t *\n\t * @param {Number} baseVersion Base version of a delta to update.\n\t * @param {Iterable.<module:engine/model/delta/delta~Delta>} updatedDeltas Deltas to be inserted in place of updated delta.\n\t */\n\tupdateDelta( baseVersion, updatedDeltas ) {\n\t\tconst deltas = this.getDelta( baseVersion );\n\n\t\t// If there are no deltas, stop executing function as there is nothing to update.\n\t\tif ( deltas === null ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Make sure that every updated delta has correct `baseVersion`.\n\t\t// This is crucial for algorithms in `History` and algorithms using `History`.\n\t\tfor ( let delta of updatedDeltas ) {\n\t\t\tdelta.baseVersion = baseVersion;\n\t\t}\n\n\t\t// Put updated deltas in place of old deltas.\n\t\tthis._deltas.splice( this._getIndex( baseVersion ), deltas.length, ...updatedDeltas );\n\n\t\t// Update history points.\n\t\tconst changeBy = updatedDeltas.length - deltas.length;\n\n\t\tfor ( let key of this._historyPoints.keys() ) {\n\t\t\tif ( key > baseVersion ) {\n\t\t\t\tthis._historyPoints.set( key, this._historyPoints.get( key ) + changeBy );\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Gets an index in {@link module:engine/model/history~History#_deltas} where delta with given `baseVersion` is added.\n\t *\n\t * @private\n\t * @param {Number} baseVersion Base version of delta.\n\t */\n\t_getIndex( baseVersion ) {\n\t\tlet index = this._historyPoints.get( baseVersion );\n\n\t\t// Base version not found - it is either too high or too low, or is in the middle of delta.\n\t\tif ( index === undefined ) {\n\t\t\tconst lastDelta = this._deltas[ this._deltas.length - 1 ];\n\t\t\tconst nextBaseVersion = lastDelta.baseVersion + lastDelta.operations.length;\n\n\t\t\tif ( baseVersion < 0 || baseVersion >= nextBaseVersion ) {\n\t\t\t\t// Base version is too high or too low - it's acceptable situation.\n\t\t\t\t// Return -1 because `baseVersion` was correct.\n\t\t\t\treturn -1;\n\t\t\t}\n\n\t\t\t/**\n\t\t\t * Given base version points to the middle of a delta.\n\t\t\t *\n\t\t\t * @error history-wrong-version\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'model-history-wrong-version: Given base version points to the middle of a delta.' );\n\t\t}\n\n\t\treturn index;\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/history.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/liveselection\n */\n\nimport Position from './position';\nimport Range from './range';\nimport LiveRange from './liverange';\nimport Text from './text';\nimport TextProxy from './textproxy';\nimport toMap from '@ckeditor/ckeditor5-utils/src/tomap';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\nimport log from '@ckeditor/ckeditor5-utils/src/log';\n\nimport Selection from './selection';\n\nconst storePrefix = 'selection:';\n\nconst attrOpTypes = new Set(\n\t[ 'addAttribute', 'removeAttribute', 'changeAttribute', 'addRootAttribute', 'removeRootAttribute', 'changeRootAttribute' ]\n);\n\n/**\n * `LiveSelection` is a type of {@link module:engine/model/selection~Selection selection} that listens to changes on a\n * {@link module:engine/model/document~Document document} and has it ranges updated accordingly. Internal implementation of this\n * mechanism bases on {@link module:engine/model/liverange~LiveRange live ranges}.\n *\n * Differences between {@link module:engine/model/selection~Selection} and `LiveSelection` are:\n * * there is always a range in `LiveSelection` - even if no ranges were added there is a\n * {@link module:engine/model/liveselection~LiveSelection#_getDefaultRange \"default range\"} present in the selection,\n * * ranges added to this selection updates automatically when the document changes,\n * * attributes of `LiveSelection` are updated automatically according to selection ranges.\n *\n * Since `LiveSelection` uses {@link module:engine/model/liverange~LiveRange live ranges}\n * and is updated when {@link module:engine/model/document~Document document}\n * changes, it cannot be set on {@link module:engine/model/node~Node nodes}\n * that are inside {@link module:engine/model/documentfragment~DocumentFragment document fragment}.\n * If you need to represent a selection in document fragment,\n * use {@link module:engine/model/selection~Selection Selection class} instead.\n *\n * @extends module:engine/model/selection~Selection\n */\nexport default class LiveSelection extends Selection {\n\t/**\n\t * Creates an empty live selection for given {@link module:engine/model/document~Document}.\n\t *\n\t * @param {module:engine/model/document~Document} document Document which owns this selection.\n\t */\n\tconstructor( document ) {\n\t\tsuper();\n\n\t\t/**\n\t\t * Document which owns this selection.\n\t\t *\n\t\t * @protected\n\t\t * @member {module:engine/model/document~Document} module:engine/model/liveselection~LiveSelection#_document\n\t\t */\n\t\tthis._document = document;\n\n\t\t/**\n\t\t * Keeps mapping of attribute name to priority with which the attribute got modified (added/changed/removed)\n\t\t * last time. Possible values of priority are: `'low'` and `'normal'`.\n\t\t *\n\t\t * Priorities are used by internal `LiveSelection` mechanisms. All attributes set using `LiveSelection`\n\t\t * attributes API are set with `'normal'` priority.\n\t\t *\n\t\t * @private\n\t\t * @member {Map} module:engine/model/liveselection~LiveSelection#_attributePriority\n\t\t */\n\t\tthis._attributePriority = new Map();\n\n\t\t// Whenever attribute operation is performed on document, update selection attributes.\n\t\t// This is not the most efficient way to update selection attributes, but should be okay for now.\n\t\tthis.listenTo( this._document, 'change', ( evt, type ) => {\n\t\t\tif ( attrOpTypes.has( type ) ) {\n\t\t\t\tthis._updateAttributes( false );\n\t\t\t}\n\t\t} );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tget isCollapsed() {\n\t\tconst length = this._ranges.length;\n\n\t\treturn length === 0 ? true : super.isCollapsed;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tget anchor() {\n\t\treturn super.anchor || this._document._getDefaultRange().start;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tget focus() {\n\t\treturn super.focus || this._document._getDefaultRange().start;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tget rangeCount() {\n\t\treturn this._ranges.length ? this._ranges.length : 1;\n\t}\n\n\t/**\n\t * Unbinds all events previously bound by document selection.\n\t */\n\tdestroy() {\n\t\tfor ( let i = 0; i < this._ranges.length; i++ ) {\n\t\t\tthis._ranges[ i ].detach();\n\t\t}\n\n\t\tthis.stopListening();\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\t*getRanges() {\n\t\tif ( this._ranges.length ) {\n\t\t\tyield *super.getRanges();\n\t\t} else {\n\t\t\tyield this._document._getDefaultRange();\n\t\t}\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tgetFirstRange() {\n\t\treturn super.getFirstRange() || this._document._getDefaultRange();\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tgetLastRange() {\n\t\treturn super.getLastRange() || this._document._getDefaultRange();\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\taddRange( range, isBackward = false ) {\n\t\tsuper.addRange( range, isBackward );\n\t\tthis.refreshAttributes();\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tremoveAllRanges() {\n\t\tsuper.removeAllRanges();\n\t\tthis.refreshAttributes();\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tsetRanges( newRanges, isLastBackward = false ) {\n\t\tsuper.setRanges( newRanges, isLastBackward );\n\t\tthis.refreshAttributes();\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tsetAttribute( key, value ) {\n\t\t// Store attribute in parent element if the selection is collapsed in an empty node.\n\t\tif ( this.isCollapsed && this.anchor.parent.childCount === 0 ) {\n\t\t\tthis._storeAttribute( key, value );\n\t\t}\n\n\t\tif ( this._setAttribute( key, value ) ) {\n\t\t\t// Fire event with exact data.\n\t\t\tconst attributeKeys = [ key ];\n\t\t\tthis.fire( 'change:attribute', { attributeKeys, directChange: true } );\n\t\t}\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tremoveAttribute( key ) {\n\t\t// Remove stored attribute from parent element if the selection is collapsed in an empty node.\n\t\tif ( this.isCollapsed && this.anchor.parent.childCount === 0 ) {\n\t\t\tthis._removeStoredAttribute( key );\n\t\t}\n\n\t\tif ( this._removeAttribute( key ) ) {\n\t\t\t// Fire event with exact data.\n\t\t\tconst attributeKeys = [ key ];\n\t\t\tthis.fire( 'change:attribute', { attributeKeys, directChange: true } );\n\t\t}\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tsetAttributesTo( attrs ) {\n\t\tattrs = toMap( attrs );\n\n\t\tif ( this.isCollapsed && this.anchor.parent.childCount === 0 ) {\n\t\t\tthis._setStoredAttributesTo( attrs );\n\t\t}\n\n\t\tconst changed = this._setAttributesTo( attrs );\n\n\t\tif ( changed.size > 0 ) {\n\t\t\t// Fire event with exact data (fire only if anything changed).\n\t\t\tconst attributeKeys = Array.from( changed );\n\t\t\tthis.fire( 'change:attribute', { attributeKeys, directChange: true } );\n\t\t}\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tclearAttributes() {\n\t\tthis.setAttributesTo( [] );\n\t}\n\n\t/**\n\t * Removes all attributes from the selection and sets attributes according to the surrounding nodes.\n\t */\n\trefreshAttributes() {\n\t\tthis._updateAttributes( true );\n\t}\n\n\t/**\n\t * Creates and returns an instance of `LiveSelection` that is a clone of given selection, meaning that it has same\n\t * ranges and same direction as this selection.\n\t *\n\t * @params {module:engine/model/selection~Selection} otherSelection Selection to be cloned.\n\t * @returns {module:engine/model/liveselection~LiveSelection} `Selection` instance that is a clone of given selection.\n\t */\n\tstatic createFromSelection( otherSelection ) {\n\t\tconst selection = new this( otherSelection._document );\n\t\tselection.setTo( otherSelection );\n\n\t\treturn selection;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\t_popRange() {\n\t\tthis._ranges.pop().detach();\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\t_pushRange( range ) {\n\t\tconst liveRange = this._prepareRange( range );\n\n\t\t// `undefined` is returned when given `range` is in graveyard root.\n\t\tif ( liveRange ) {\n\t\t\tthis._ranges.push( liveRange );\n\t\t}\n\t}\n\n\t/**\n\t * Prepares given range to be added to selection. Checks if it is correct,\n\t * converts it to {@link module:engine/model/liverange~LiveRange LiveRange}\n\t * and sets listeners listening to the range's change event.\n\t *\n\t * @private\n\t * @param {module:engine/model/range~Range} range\n\t */\n\t_prepareRange( range ) {\n\t\tif ( !( range instanceof Range ) ) {\n\t\t\t/**\n\t\t\t * Trying to add an object that is not an instance of Range.\n\t\t\t *\n\t\t\t * @error model-selection-added-not-range\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'model-selection-added-not-range: Trying to add an object that is not an instance of Range.' );\n\t\t}\n\n\t\tif ( range.root == this._document.graveyard ) {\n\t\t\t/**\n\t\t\t * Trying to add a Range that is in the graveyard root. Range rejected.\n\t\t\t *\n\t\t\t * @warning model-selection-range-in-graveyard\n\t\t\t */\n\t\t\tlog.warn( 'model-selection-range-in-graveyard: Trying to add a Range that is in the graveyard root. Range rejected.' );\n\n\t\t\treturn;\n\t\t}\n\n\t\tthis._checkRange( range );\n\n\t\tconst liveRange = LiveRange.createFromRange( range );\n\t\tthis.listenTo( liveRange, 'change', ( evt, oldRange ) => {\n\t\t\tif ( liveRange.root == this._document.graveyard ) {\n\t\t\t\tthis._fixGraveyardSelection( liveRange, oldRange );\n\t\t\t}\n\n\t\t\tthis.fire( 'change:range', { directChange: false } );\n\t\t} );\n\n\t\treturn liveRange;\n\t}\n\n\t/**\n\t * Updates this selection attributes according to its ranges and the {@link module:engine/model/document~Document model document}.\n\t *\n\t * @protected\n\t * @param {Boolean} clearAll\n\t * @fires change:attribute\n\t */\n\t_updateAttributes( clearAll ) {\n\t\tconst newAttributes = toMap( this._getSurroundingAttributes() );\n\t\tconst oldAttributes = toMap( this.getAttributes() );\n\n\t\tif ( clearAll ) {\n\t\t\t// If `clearAll` remove all attributes and reset priorities.\n\t\t\tthis._attributePriority = new Map();\n\t\t\tthis._attrs = new Map();\n\t\t} else {\n\t\t\t// If not, remove only attributes added with `low` priority.\n\t\t\tfor ( let [ key, priority ] of this._attributePriority ) {\n\t\t\t\tif ( priority == 'low' ) {\n\t\t\t\t\tthis._attrs.delete( key );\n\t\t\t\t\tthis._attributePriority.delete( key );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\tthis._setAttributesTo( newAttributes, false );\n\n\t\t// Let's evaluate which attributes really changed.\n\t\tconst changed = [];\n\n\t\t// First, loop through all attributes that are set on selection right now.\n\t\t// Check which of them are different than old attributes.\n\t\tfor ( let [ newKey, newValue ] of this.getAttributes() ) {\n\t\t\tif ( !oldAttributes.has( newKey ) || oldAttributes.get( newKey ) !== newValue ) {\n\t\t\t\tchanged.push( newKey );\n\t\t\t}\n\t\t}\n\n\t\t// Then, check which of old attributes got removed.\n\t\tfor ( let [ oldKey ] of oldAttributes ) {\n\t\t\tif ( !this.hasAttribute( oldKey ) ) {\n\t\t\t\tchanged.push( oldKey );\n\t\t\t}\n\t\t}\n\n\t\t// Fire event with exact data (fire only if anything changed).\n\t\tif ( changed.length > 0 ) {\n\t\t\tthis.fire( 'change:attribute', { attributeKeys: changed, directChange: false } );\n\t\t}\n\t}\n\n\t/**\n\t * Generates and returns an attribute key for selection attributes store, basing on original attribute key.\n\t *\n\t * @protected\n\t * @param {String} key Attribute key to convert.\n\t * @returns {String} Converted attribute key, applicable for selection store.\n\t */\n\tstatic _getStoreAttributeKey( key ) {\n\t\treturn storePrefix + key;\n\t}\n\n\t/**\n\t * Internal method for setting `LiveSelection` attribute. Supports attribute priorities (through `directChange`\n\t * parameter).\n\t *\n\t * @private\n\t * @param {String} key Attribute key.\n\t * @param {*} value Attribute value.\n\t * @param {Boolean} [directChange=true] `true` if the change is caused by `Selection` API, `false` if change\n\t * is caused by `Batch` API.\n\t * @returns {Boolean} Whether value has changed.\n\t */\n\t_setAttribute( key, value, directChange = true ) {\n\t\tconst priority = directChange ? 'normal' : 'low';\n\n\t\tif ( priority == 'low' && this._attributePriority.get( key ) == 'normal' ) {\n\t\t\t// Priority too low.\n\t\t\treturn false;\n\t\t}\n\n\t\tconst oldValue = super.getAttribute( key );\n\n\t\t// Don't do anything if value has not changed.\n\t\tif ( oldValue === value ) {\n\t\t\treturn false;\n\t\t}\n\n\t\tthis._attrs.set( key, value );\n\n\t\t// Update priorities map.\n\t\tthis._attributePriority.set( key, priority );\n\n\t\treturn true;\n\t}\n\n\t/**\n\t * Internal method for removing `LiveSelection` attribute. Supports attribute priorities (through `directChange`\n\t * parameter).\n\t *\n\t * @private\n\t * @param {String} key Attribute key.\n\t * @param {Boolean} [directChange=true] `true` if the change is caused by `Selection` API, `false` if change\n\t * is caused by `Batch` API.\n\t * @returns {Boolean} Whether attribute was removed. May not be true if such attributes didn't exist or the\n\t * existing attribute had higher priority.\n\t */\n\t_removeAttribute( key, directChange = true ) {\n\t\tconst priority = directChange ? 'normal' : 'low';\n\n\t\tif ( priority == 'low' && this._attributePriority.get( key ) == 'normal' ) {\n\t\t\t// Priority too low.\n\t\t\treturn false;\n\t\t}\n\n\t\t// Don't do anything if value has not changed.\n\t\tif ( !super.hasAttribute( key ) ) {\n\t\t\treturn false;\n\t\t}\n\n\t\tthis._attrs.delete( key );\n\n\t\t// Update priorities map.\n\t\tthis._attributePriority.set( key, priority );\n\n\t\treturn true;\n\t}\n\n\t/**\n\t * Internal method for setting multiple `LiveSelection` attributes. Supports attribute priorities (through\n\t * `directChange` parameter).\n\t *\n\t * @private\n\t * @param {Iterable|Object} attrs Iterable object containing attributes to be set.\n\t * @param {Boolean} [directChange=true] `true` if the change is caused by `Selection` API, `false` if change\n\t * is caused by `Batch` API.\n\t * @returns {Set.<String>} Changed attribute keys.\n\t */\n\t_setAttributesTo( attrs, directChange = true ) {\n\t\tconst changed = new Set();\n\n\t\tfor ( let [ oldKey, oldValue ] of this.getAttributes() ) {\n\t\t\t// Do not remove attribute if attribute with same key and value is about to be set.\n\t\t\tif ( attrs.get( oldKey ) === oldValue ) {\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\t// Attribute still might not get removed because of priorities.\n\t\t\tif ( this._removeAttribute( oldKey, directChange ) ) {\n\t\t\t\tchanged.add( oldKey );\n\t\t\t}\n\t\t}\n\n\t\tfor ( let [ key, value ] of attrs ) {\n\t\t\t// Attribute may not be set because of attributes or because same key/value is already added.\n\t\t\tconst gotAdded = this._setAttribute( key, value, directChange );\n\n\t\t\tif ( gotAdded ) {\n\t\t\t\tchanged.add( key );\n\t\t\t}\n\t\t}\n\n\t\treturn changed;\n\t}\n\n\t/**\n\t * Returns an iterator that iterates through all selection attributes stored in current selection's parent.\n\t *\n\t * @private\n\t * @returns {Iterable.<*>}\n\t */\n\t*_getStoredAttributes() {\n\t\tconst selectionParent = this.getFirstPosition().parent;\n\n\t\tif ( this.isCollapsed && selectionParent.childCount === 0 ) {\n\t\t\tfor ( let key of selectionParent.getAttributeKeys() ) {\n\t\t\t\tif ( key.indexOf( storePrefix ) === 0 ) {\n\t\t\t\t\tconst realKey = key.substr( storePrefix.length );\n\n\t\t\t\t\tyield [ realKey, selectionParent.getAttribute( key ) ];\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Removes attribute with given key from attributes stored in current selection's parent node.\n\t *\n\t * @private\n\t * @param {String} key Key of attribute to remove.\n\t */\n\t_removeStoredAttribute( key ) {\n\t\tconst storeKey = LiveSelection._getStoreAttributeKey( key );\n\n\t\tthis._document.batch().removeAttribute( this.anchor.parent, storeKey );\n\t}\n\n\t/**\n\t * Stores given attribute key and value in current selection's parent node.\n\t *\n\t * @private\n\t * @param {String} key Key of attribute to set.\n\t * @param {*} value Attribute value.\n\t */\n\t_storeAttribute( key, value ) {\n\t\tconst storeKey = LiveSelection._getStoreAttributeKey( key );\n\n\t\tthis._document.batch().setAttribute( this.anchor.parent, storeKey, value );\n\t}\n\n\t/**\n\t * Sets selection attributes stored in current selection's parent node to given set of attributes.\n\t *\n\t * @private\n\t * @param {Iterable|Object} attrs Iterable object containing attributes to be set.\n\t */\n\t_setStoredAttributesTo( attrs ) {\n\t\tconst selectionParent = this.anchor.parent;\n\t\tconst batch = this._document.batch();\n\n\t\tfor ( let [ oldKey ] of this._getStoredAttributes() ) {\n\t\t\tconst storeKey = LiveSelection._getStoreAttributeKey( oldKey );\n\n\t\t\tbatch.removeAttribute( selectionParent, storeKey );\n\t\t}\n\n\t\tfor ( let [ key, value ] of attrs ) {\n\t\t\tconst storeKey = LiveSelection._getStoreAttributeKey( key );\n\n\t\t\tbatch.setAttribute( selectionParent, storeKey, value );\n\t\t}\n\t}\n\n\t/**\n\t * Checks model text nodes that are closest to the selection's first position and returns attributes of first\n\t * found element. If there are no text nodes in selection's first position parent, it returns selection\n\t * attributes stored in that parent.\n\t *\n\t * @private\n\t * @returns {Iterable.<*>} Collection of attributes.\n\t */\n\t_getSurroundingAttributes() {\n\t\tconst position = this.getFirstPosition();\n\n\t\tlet attrs = null;\n\n\t\tif ( !this.isCollapsed ) {\n\t\t\t// 1. If selection is a range...\n\t\t\tconst range = this.getFirstRange();\n\n\t\t\t// ...look for a first character node in that range and take attributes from it.\n\t\t\tfor ( let item of range ) {\n\t\t\t\t// This is not an optimal solution because of https://github.com/ckeditor/ckeditor5-engine/issues/454.\n\t\t\t\t// It can be done better by using `break;` instead of checking `attrs === null`.\n\t\t\t\tif ( item.type == 'text' && attrs === null ) {\n\t\t\t\t\tattrs = item.item.getAttributes();\n\t\t\t\t}\n\t\t\t}\n\t\t} else {\n\t\t\t// 2. If the selection is a caret or the range does not contain a character node...\n\n\t\t\tconst nodeBefore = position.textNode ? position.textNode : position.nodeBefore;\n\t\t\tconst nodeAfter = position.textNode ? position.textNode : position.nodeAfter;\n\n\t\t\t// ...look at the node before caret and take attributes from it if it is a character node.\n\t\t\tattrs = getAttrsIfCharacter( nodeBefore );\n\n\t\t\t// 3. If not, look at the node after caret...\n\t\t\tif ( !attrs ) {\n\t\t\t\tattrs = getAttrsIfCharacter( nodeAfter );\n\t\t\t}\n\n\t\t\t// 4. If not, try to find the first character on the left, that is in the same node.\n\t\t\tif ( !attrs ) {\n\t\t\t\tlet node = nodeBefore;\n\n\t\t\t\twhile ( node && !attrs ) {\n\t\t\t\t\tnode = node.previousSibling;\n\t\t\t\t\tattrs = getAttrsIfCharacter( node );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// 5. If not found, try to find the first character on the right, that is in the same node.\n\t\t\tif ( !attrs ) {\n\t\t\t\tlet node = nodeAfter;\n\n\t\t\t\twhile ( node && !attrs ) {\n\t\t\t\t\tnode = node.nextSibling;\n\t\t\t\t\tattrs = getAttrsIfCharacter( node );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// 6. If not found, selection should retrieve attributes from parent.\n\t\t\tif ( !attrs ) {\n\t\t\t\tattrs = this._getStoredAttributes();\n\t\t\t}\n\t\t}\n\n\t\treturn attrs;\n\t}\n\n\t/**\n\t * Fixes a selection range after it ends up in graveyard root.\n\t *\n\t * @private\n\t * @param {module:engine/model/liverange~LiveRange} gyRange The range added in selection, that ended up in graveyard root.\n\t * @param {module:engine/model/range~Range} oldRange The state of that range before it was added to graveyard root.\n\t */\n\t_fixGraveyardSelection( gyRange, oldRange ) {\n\t\tconst gyPath = gyRange.start.path;\n\n\t\tconst newPathLength = oldRange.start.path.length - ( gyPath.length - 2 );\n\t\tconst newPath = oldRange.start.path.slice( 0, newPathLength );\n\t\tnewPath[ newPath.length - 1 ] -= gyPath[ 1 ];\n\n\t\tconst newPosition = new Position( oldRange.root, newPath );\n\t\tlet selectionRange = this._document.getNearestSelectionRange( newPosition );\n\n\t\t// If nearest valid selection range cannot be found - use one created at root beginning.\n\t\tif ( !selectionRange ) {\n\t\t\tselectionRange = new Range( new Position( newPosition.root, [ 0 ] ) );\n\t\t}\n\n\t\tconst newRange = this._prepareRange( selectionRange );\n\t\tconst index = this._ranges.indexOf( gyRange );\n\t\tgyRange.detach();\n\n\t\tthis._ranges.splice( index, 1, newRange );\n\t}\n}\n\n/**\n * @event change:attribute\n */\n\n// Helper function for {@link module:engine/model/liveselection~LiveSelection#_updateAttributes}. It takes model item, checks whether\n// it is a text node (or text proxy) and if so, returns it's attributes. If not, returns `null`.\n//\n// @param {module:engine/model/item~Item|null}  node\n// @returns {Boolean}\nfunction getAttrsIfCharacter( node ) {\n\tif ( node instanceof TextProxy || node instanceof Text ) {\n\t\treturn node.getAttributes();\n\t}\n\n\treturn null;\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/liveselection.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/markercollection\n */\n\nimport LiveRange from './liverange';\nimport Position from './position';\nimport Range from './range';\nimport EmitterMixin from '@ckeditor/ckeditor5-utils/src/emittermixin';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\n\n/**\n * Creates, stores and manages {@link ~Marker markers}.\n *\n * Markers are created by {@link ~MarkerCollection#set setting} a name for a {@link module:engine/model/liverange~LiveRange live range}\n * in `MarkerCollection`. Name is used to group and identify markers. Names have to be unique, but markers can be grouped by\n * using common prefixes, separated with `:`, for example: `user:john` or `search:3`.\n *\n * Since markers are based on {@link module:engine/model/liverange~LiveRange live ranges}, for efficiency reasons, it's\n * best to create and keep at least markers as possible.\n */\nexport default class MarkerCollection {\n\t/**\n\t * Creates a markers collection.\n\t */\n\tconstructor() {\n\t\t/**\n\t\t * Stores {@link ~Marker markers} added to the collection.\n\t\t *\n\t\t * @private\n\t\t * @member {Map} #_markers\n\t\t */\n\t\tthis._markers = new Map();\n\t}\n\n\t/**\n\t * Returns an iterator that iterates over all {@link ~Marker markers} added to the collection.\n\t *\n\t * @returns {Iterator}\n\t */\n\t[ Symbol.iterator ]() {\n\t\treturn this._markers.values();\n\t}\n\n\t/**\n\t * Checks if marker with given `markerName` is in the collection.\n\t *\n\t * @param {String} markerName Marker name.\n\t * @returns {Boolean} `true` if marker with given `markerName` is in the collection, `false` otherwise.\n\t */\n\thas( markerName ) {\n\t\treturn this._markers.has( markerName );\n\t}\n\n\t/**\n\t * Returns {@link ~Marker marker} with given `markerName`.\n\t *\n\t * @param {String} markerName Name of marker to get.\n\t * @returns {module:engine/model/markercollection~Marker|null} Marker with given name or `null` if such marker was\n\t * not added to the collection.\n\t */\n\tget( markerName ) {\n\t\treturn this._markers.get( markerName ) || null;\n\t}\n\n\t/**\n\t * Creates and adds a {@link ~Marker marker} to the `MarkerCollection` with given name on given\n\t * {@link module:engine/model/range~Range range}.\n\t *\n\t * If `MarkerCollection` already had a marker with given name (or {@link ~Marker marker} was passed) and the range to\n\t * set is different, the marker in collection is removed and then new marker is added. If the range was same, nothing\n\t * happens and `false` is returned.\n\t *\n\t * @fires module:engine/model/markercollection~MarkerCollection#event:add\n\t * @fires module:engine/model/markercollection~MarkerCollection#event:remove\n\t * @param {String|module:engine/model/markercollection~Marker} markerOrName Name of marker to add or Marker instance to update.\n\t * @param {module:engine/model/range~Range} range Marker range.\n\t * @returns {module:engine/model/markercollection~Marker} `Marker` instance added to the collection.\n\t */\n\tset( markerOrName, range ) {\n\t\tconst markerName = markerOrName instanceof Marker ? markerOrName.name : markerOrName;\n\t\tconst oldMarker = this._markers.get( markerName );\n\n\t\tif ( oldMarker ) {\n\t\t\tconst oldRange = oldMarker.getRange();\n\n\t\t\tif ( oldRange.isEqual( range ) ) {\n\t\t\t\treturn oldMarker;\n\t\t\t}\n\n\t\t\tthis.remove( markerName );\n\t\t}\n\n\t\tconst liveRange = LiveRange.createFromRange( range );\n\t\tconst marker = new Marker( markerName, liveRange );\n\n\t\tthis._markers.set( markerName, marker );\n\t\tthis.fire( 'add', marker );\n\n\t\treturn marker;\n\t}\n\n\t/**\n\t * Removes given {@link ~Marker marker} or a marker with given name from the `MarkerCollection`.\n\t *\n\t * @param {String} markerOrName Marker or name of a marker to remove.\n\t * @returns {Boolean} `true` if marker was found and removed, `false` otherwise.\n\t */\n\tremove( markerOrName ) {\n\t\tconst markerName = markerOrName instanceof Marker ? markerOrName.name : markerOrName;\n\t\tconst oldMarker = this._markers.get( markerName );\n\n\t\tif ( oldMarker ) {\n\t\t\tthis._markers.delete( markerName );\n\t\t\tthis.fire( 'remove', oldMarker );\n\n\t\t\tthis._destroyMarker( oldMarker );\n\n\t\t\treturn true;\n\t\t}\n\n\t\treturn false;\n\t}\n\n\t/**\n\t * Returns iterator that iterates over all markers, which ranges contain given {@link module:engine/model/position~Position position}.\n\t *\n\t * @param {module:engine/model/position~Position} position\n\t * @returns {Iterator.<module:engine/model/markercollection~Marker>}\n\t */\n\t*getMarkersAtPosition( position ) {\n\t\tfor ( let marker of this ) {\n\t\t\tif ( marker.getRange().containsPosition( position ) ) {\n\t\t\t\tyield marker;\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Destroys markers collection.\n\t */\n\tdestroy() {\n\t\tfor ( let marker of this._markers.values() ) {\n\t\t\tthis._destroyMarker( marker );\n\t\t}\n\n\t\tthis._markers = null;\n\n\t\tthis.stopListening();\n\t}\n\n\t/**\n\t * Iterates over all markers that starts with given `prefix`.\n\t *\n\t *\t\tconst markerFooA = markersCollection.set( 'foo:a', rangeFooA );\n\t *\t\tconst markerFooB = markersCollection.set( 'foo:b', rangeFooB );\n\t *\t\tconst markerBarA = markersCollection.set( 'bar:a', rangeBarA );\n\t *\t\tconst markerFooBarA = markersCollection.set( 'foobar:a', rangeFooBarA );\n\t *\t\tArray.from( markersCollection.getMarkersGroup( 'foo' ) ); // [ markerFooA, markerFooB ]\n\t *\t\tArray.from( markersCollection.getMarkersGroup( 'a' ) ); // []\n\t *\n\t * @param prefix\n\t * @returns {Iterator.<module:engine/model/markercollection~Marker>}\n\t */\n\t*getMarkersGroup( prefix ) {\n\t\tfor ( let marker of this._markers.values() ) {\n\t\t\tif ( marker.name.startsWith( prefix + ':' ) ) {\n\t\t\t\tyield marker;\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Destroys marker.\n\t *\n\t * @private\n\t * @param {module:engine/model/markercollection~Marker} marker Marker to destroy.\n\t */\n\t_destroyMarker( marker ) {\n\t\tmarker.stopListening();\n\t\tmarker._liveRange.detach();\n\t\tmarker._liveRange = null;\n\t}\n\n\t/**\n\t * Fired whenever marker is added to `MarkerCollection`.\n\t *\n\t * @event add\n\t * @param {module:engine/model/markercollection~Marker} The added marker.\n\t */\n\n\t/**\n\t * Fired whenever marker is removed from `MarkerCollection`.\n\t *\n\t * @event remove\n\t * @param {module:engine/model/markercollection~Marker} marker The removed marker.\n\t */\n}\n\nmix( MarkerCollection, EmitterMixin );\n\n/**\n * `Marker` is a continuous parts of model (like a range), is named and represent some kind of information about marked\n * part of model document. In contrary to {@link module:engine/model/node~Node nodes}, which are building blocks of\n * model document tree, markers are not stored directly in document tree. Still, they are document data, by giving\n * additional meaning to the part of a model document between marker start and marker end.\n *\n * In this sense, markers are similar to adding and converting attributes on nodes. The difference is that attribute is\n * connected with a given node (e.g. a character is bold no matter if it gets moved or content around it changes).\n * Markers on the other hand are continuous ranges and are characterised by their start and end position. This means that\n * any character in the marker is marked by the marker. For example, if a character is moved outside of marker it stops being\n * \"special\" and the marker is shrunk. Similarly, when a character is moved into the marker from other place in document\n * model, it starts being \"special\" and the marker is enlarged.\n *\n * Since markers are based on {@link module:engine/model/liverange~LiveRange live ranges}, for efficiency reasons, it's\n * best to create and keep at least markers as possible.\n *\n * Markers can be converted to view by adding appropriate converters for\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:addMarker addMarker} and\n * {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:removeMarker removeMarker}\n * events, or by building converters for {@link module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher}\n * using {@link module:engine/conversion/buildmodelconverter~buildModelConverter model converter builder}.\n *\n * Another upside of markers is that finding marked part of document is fast and easy. Using attributes to mark some nodes\n * and then trying to find that part of document would require traversing whole document tree. Marker gives instant access\n * to the range which it is marking at the moment.\n *\n * `Marker` instances are created and destroyed only by {@link ~MarkerCollection MarkerCollection}.\n */\nclass Marker {\n\t/**\n\t * Creates a marker instance.\n\t *\n\t * @param {String} name Marker name.\n\t * @param {module:engine/model/liverange~LiveRange} liveRange Range marked by the marker.\n\t */\n\tconstructor( name, liveRange ) {\n\t\t/**\n\t\t * Marker name.\n\t\t *\n\t\t * @readonly\n\t\t * @member {String} #name\n\t\t */\n\t\tthis.name = name;\n\n\t\t/**\n\t\t * Range marked by the marker.\n\t\t *\n\t\t * @protected\n\t\t * @member {module:engine/model/liverange~LiveRange} #_liveRange\n\t\t */\n\t\tthis._liveRange = liveRange;\n\n\t\tthis._liveRange.delegate( 'change' ).to( this );\n\t}\n\n\t/**\n\t * Returns current marker start position.\n\t *\n\t * @returns {module:engine/model/position~Position}\n\t */\n\tgetStart() {\n\t\tif ( !this._liveRange ) {\n\t\t\t/**\n\t\t\t * Operating on destroyed marker instance.\n\t\t\t *\n\t\t\t * @error marker-destroyed\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'marker-destroyed: Operating on destroyed marker instance.' );\n\t\t}\n\n\t\treturn Position.createFromPosition( this._liveRange.start );\n\t}\n\n\t/**\n\t * Returns current marker end position.\n\t *\n\t * @returns {module:engine/model/position~Position}\n\t */\n\tgetEnd() {\n\t\tif ( !this._liveRange ) {\n\t\t\t/**\n\t\t\t * Operating on destroyed marker instance.\n\t\t\t *\n\t\t\t * @error marker-destroyed\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'marker-destroyed: Operating on destroyed marker instance.' );\n\t\t}\n\n\t\treturn Position.createFromPosition( this._liveRange.end );\n\t}\n\n\t/**\n\t * Returns a range that represents current state of marker.\n\t *\n\t * Keep in mind that returned value is a {@link module:engine/model/range~Range Range}, not a\n\t * {@link module:engine/model/liverange~LiveRange LiveRange}. This means that it is up-to-date and relevant only\n\t * until next model document change. Do not store values returned by this method. Instead, store {@link ~Marker#name}\n\t * and get `Marker` instance from {@link module:engine/model/markercollection~MarkerCollection MarkerCollection} every\n\t * time there is a need to read marker properties. This will guarantee that the marker has not been removed and\n\t * that it's data is up-to-date.\n\t *\n\t * @returns {module:engine/model/range~Range}\n\t */\n\tgetRange() {\n\t\tif ( !this._liveRange ) {\n\t\t\t/**\n\t\t\t * Operating on destroyed marker instance.\n\t\t\t *\n\t\t\t * @error marker-destroyed\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'marker-destroyed: Operating on destroyed marker instance.' );\n\t\t}\n\n\t\treturn Range.createFromRange( this._liveRange );\n\t}\n\n\t/**\n\t * Fired whenever {@link ~Marker#_liveRange marker range} is changed due to changes on {@link module:engine/model/document~Document}.\n\t * This is actually a delegated {@link module:engine/model/liverange~LiveRange#event:change LiveRange change event}.\n\t *\n\t * When marker is removed from {@link module:engine/model/markercollection~MarkerCollection MarkerCollection},\n\t * all event listeners listening to it should be removed. It is best to do it on\n\t * {@link module:engine/model/markercollection~MarkerCollection#event:remove MarkerCollection remove event}.\n\t *\n\t * @see module:engine/model/liverange~LiveRange#event:change\n\t * @event change\n\t * @param {module:engine/model/range~Range} oldRange Range with start and end position equal to start and end position of\n\t * this marker range before it got changed.\n\t */\n}\n\nmix( Marker, EmitterMixin );\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/markercollection.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/operation/operationfactory\n */\n\nimport AttributeOperation from '../operation/attributeoperation';\nimport InsertOperation from '../operation/insertoperation';\nimport MarkerOperation from '../operation/markeroperation';\nimport MoveOperation from '../operation/moveoperation';\nimport NoOperation from '../operation/nooperation';\nimport Operation from '../operation/operation';\nimport ReinsertOperation from '../operation/reinsertoperation';\nimport RemoveOperation from '../operation/removeoperation';\nimport RenameOperation from '../operation/renameoperation';\nimport RootAttributeOperation from '../operation/rootattributeoperation';\n\nconst operations = {};\noperations[ AttributeOperation.className ] = AttributeOperation;\noperations[ InsertOperation.className ] = InsertOperation;\noperations[ MarkerOperation.className ] = MarkerOperation;\noperations[ MoveOperation.className ] = MoveOperation;\noperations[ NoOperation.className ] = NoOperation;\noperations[ Operation.className ] = Operation;\noperations[ ReinsertOperation.className ] = ReinsertOperation;\noperations[ RemoveOperation.className ] = RemoveOperation;\noperations[ RenameOperation.className ] = RenameOperation;\noperations[ RootAttributeOperation.className ] = RootAttributeOperation;\n\n/**\n * A factory class for creating operations.\n *\n * @abstract\n */\nexport default class OperationFactory {\n\t/**\n\t * Creates concrete `Operation` object from deserilized object, i.e. from parsed JSON string.\n\t *\n\t * @param {Object} json Deserialized JSON object.\n\t * @param {module:engine/model/document~Document} document Document on which this operation will be applied.\n\t * @returns {module:engine/model/operation/operation~Operation}\n\t */\n\tstatic fromJSON( json, document ) {\n\t\treturn operations[ json.__className ].fromJSON( json, document );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/operation/operationfactory.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/operation/transform\n */\n\nimport InsertOperation from './insertoperation';\nimport AttributeOperation from './attributeoperation';\nimport RootAttributeOperation from './rootattributeoperation';\nimport RenameOperation from './renameoperation';\nimport MarkerOperation from './markeroperation';\nimport MoveOperation from './moveoperation';\nimport RemoveOperation from './removeoperation';\nimport NoOperation from './nooperation';\nimport Range from '../range';\nimport compareArrays from '@ckeditor/ckeditor5-utils/src/comparearrays';\n\n/**\n * Transforms given {@link module:engine/model/operation/operation~Operation operation}\n * by another {@link module:engine/model/operation/operation~Operation operation}\n * and returns the result of that transformation as an array containing\n * one or more {@link module:engine/model/operation/operation~Operation operations}.\n *\n * Operations work on specified positions, passed to them when they are created.\n * Whenever {@link module:engine/model/document~Document document}\n * changes, we have to reflect those modifications by updating or \"transforming\" operations which are not yet applied.\n * When an operation is transformed, its parameters may change based on the operation by which it is transformed.\n * If the transform-by operation applied any modifications to the Tree Data Model which affect positions or nodes\n * connected with transformed operation, those changes will be reflected in the parameters of the returned operation(s).\n *\n * Whenever the {@link module:engine/model/document~Document document}\n * has different {@link module:engine/model/document~Document#version}\n * than the operation you want to {@link module:engine/model/document~Document#applyOperation apply}, you need to transform that\n * operation by all operations which were already applied to the {@link module:engine/model/document~Document document} and have greater\n * {@link module:engine/model/document~Document#version} than the operation being applied. Transform them in the same order as those\n * operations which were applied. This way all modifications done to the Tree Data Model will be reflected\n * in the operation parameters and the operation will \"operate\" on \"up-to-date\" version of the Tree Data Model.\n * This is mostly the case with Operational Transformations but it might be needed in particular features as well.\n *\n * In some cases, when given operation apply changes to the same nodes as this operation, two or more operations need\n * to be created as one would not be able to reflect the combination of these operations.\n * This is why an array is returned instead of a single object. All returned operations have to be applied\n * (or further transformed) to get an effect which was intended in pre-transformed operation.\n *\n * Sometimes two operations are in conflict. This happens when they modify the same node in a different way, i.e.\n * set different value for the same attribute or move the node into different positions. When this happens,\n * we need to decide which operation is more important. We can't assume that operation `a` or operation `b` is always\n * more important. In Operational Transformations algorithms we often need to get a result of transforming\n * `a` by `b` and also `b` by `a`. In both transformations the same operation has to be the important one. If we assume\n * that first or the second passed operation is always more important we won't be able to solve this case.\n *\n * @external module:engine/model/model.operation\n * @function module:engine/model/operation/transform~transform\n * @param {module:engine/model/operation/operation~Operation} a Operation that will be transformed.\n * @param {module:engine/model/operation/operation~Operation} b Operation to transform by.\n * @param {Boolean} isAMoreImportantThanB Flag indicating whether the operation which will be transformed (`a`) should be treated\n * as more important when resolving conflicts.\n * @returns {Array.<module:engine/model/operation/operation~Operation>} Result of the transformation.\n */\n\nexport default transform;\n\nconst ot = {\n\tInsertOperation: {\n\t\t// Transforms InsertOperation `a` by InsertOperation `b`. Accepts a flag stating whether `a` is more important\n\t\t// than `b` when it comes to resolving conflicts. Returns results as an array of operations.\n\t\tInsertOperation( a, b, isStrong ) {\n\t\t\t// Transformed operations are always new instances, not references to the original operations.\n\t\t\tconst transformed = a.clone();\n\n\t\t\t// Transform insert position by the other operation position.\n\t\t\ttransformed.position = transformed.position._getTransformedByInsertion( b.position, b.nodes.maxOffset, !isStrong );\n\n\t\t\treturn [ transformed ];\n\t\t},\n\n\t\tAttributeOperation: doNotUpdate,\n\n\t\tRootAttributeOperation: doNotUpdate,\n\n\t\tRenameOperation: doNotUpdate,\n\n\t\tMarkerOperation: doNotUpdate,\n\n\t\t// Transforms InsertOperation `a` by MoveOperation `b`. Accepts a flag stating whether `a` is more important\n\t\t// than `b` when it comes to resolving conflicts. Returns results as an array of operations.\n\t\tMoveOperation( a, b, isStrong ) {\n\t\t\tconst transformed = a.clone();\n\n\t\t\t// Transform insert position by the other operation parameters.\n\t\t\ttransformed.position = a.position._getTransformedByMove( b.sourcePosition, b.targetPosition, b.howMany, !isStrong, b.isSticky );\n\n\t\t\treturn [ transformed ];\n\t\t}\n\t},\n\n\tAttributeOperation: {\n\t\t// Transforms AttributeOperation `a` by InsertOperation `b`. Returns results as an array of operations.\n\t\tInsertOperation( a, b ) {\n\t\t\t// Transform this operation's range.\n\t\t\tconst ranges = a.range._getTransformedByInsertion( b.position, b.nodes.maxOffset, true, false );\n\n\t\t\t// Map transformed range(s) to operations and return them.\n\t\t\treturn ranges.reverse().map( ( range ) => {\n\t\t\t\treturn new AttributeOperation( range, a.key, a.oldValue, a.newValue, a.baseVersion );\n\t\t\t} );\n\t\t},\n\n\t\t// Transforms AttributeOperation `a` by AttributeOperation `b`. Accepts a flag stating whether `a` is more important\n\t\t// than `b` when it comes to resolving conflicts. Returns results as an array of operations.\n\t\tAttributeOperation( a, b, isStrong ) {\n\t\t\tif ( a.key === b.key ) {\n\t\t\t\t// If operations attributes are in conflict, check if their ranges intersect and manage them properly.\n\n\t\t\t\t// First, we want to apply change to the part of a range that has not been changed by the other operation.\n\t\t\t\tlet operations = a.range.getDifference( b.range ).map( ( range ) => {\n\t\t\t\t\treturn new AttributeOperation( range, a.key, a.oldValue, a.newValue, a.baseVersion );\n\t\t\t\t} );\n\n\t\t\t\t// Then we take care of the common part of ranges.\n\t\t\t\tconst common = a.range.getIntersection( b.range );\n\n\t\t\t\tif ( common ) {\n\t\t\t\t\t// If this operation is more important, we also want to apply change to the part of the\n\t\t\t\t\t// original range that has already been changed by the other operation. Since that range\n\t\t\t\t\t// got changed we also have to update `oldValue`.\n\t\t\t\t\tif ( isStrong ) {\n\t\t\t\t\t\toperations.push( new AttributeOperation( common, b.key, b.newValue, a.newValue, a.baseVersion ) );\n\t\t\t\t\t} else if ( operations.length === 0 ) {\n\t\t\t\t\t\toperations.push( new NoOperation( 0 ) );\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\treturn operations;\n\t\t\t} else {\n\t\t\t\t// If operations don't conflict, simply return an array containing just a clone of this operation.\n\t\t\t\treturn [ a.clone() ];\n\t\t\t}\n\t\t},\n\n\t\tRootAttributeOperation: doNotUpdate,\n\n\t\tRenameOperation: doNotUpdate,\n\n\t\tMarkerOperation: doNotUpdate,\n\n\t\t// Transforms AttributeOperation `a` by MoveOperation `b`. Returns results as an array of operations.\n\t\tMoveOperation( a, b ) {\n\t\t\t// Convert MoveOperation properties into a range.\n\t\t\tconst rangeB = Range.createFromPositionAndShift( b.sourcePosition, b.howMany );\n\n\t\t\t// This will aggregate transformed ranges.\n\t\t\tlet ranges = [];\n\n\t\t\t// Special case when MoveOperation is in fact a RemoveOperation. RemoveOperation not only moves nodes but also\n\t\t\t// creates a \"holder\" element for them in graveyard. If there was a RemoveOperation pointing to an offset\n\t\t\t// before this AttributeOperation, we have to increment AttributeOperation's offset.\n\t\t\tif ( b instanceof RemoveOperation && b._needsHolderElement &&\n\t\t\t\ta.range.root == b.targetPosition.root && a.range.start.path[ 0 ] >= b._holderElementOffset\n\t\t\t) {\n\t\t\t\t// Do not change original operation!\n\t\t\t\ta = a.clone();\n\t\t\t\ta.range.start.path[ 0 ]++;\n\t\t\t\ta.range.end.path[ 0 ]++;\n\t\t\t}\n\n\t\t\t// Difference is a part of changed range that is modified by AttributeOperation but is not affected\n\t\t\t// by MoveOperation. This can be zero, one or two ranges (if moved range is inside changed range).\n\t\t\t// Right now we will make a simplification and join difference ranges and transform them as one. We will cover rangeB later.\n\t\t\tconst difference = joinRanges( a.range.getDifference( rangeB ) );\n\n\t\t\t// Common is a range of nodes that is affected by MoveOperation. So it got moved to other place.\n\t\t\tconst common = a.range.getIntersection( rangeB );\n\n\t\t\tif ( difference !== null ) {\n\t\t\t\t// MoveOperation removes nodes from their original position. We acknowledge this by proper transformation.\n\t\t\t\t// Take the start and the end of the range and transform them by deletion of moved nodes.\n\t\t\t\t// Note that if rangeB was inside AttributeOperation range, only difference.end will be transformed.\n\t\t\t\t// This nicely covers the joining simplification we did in the previous step.\n\t\t\t\tdifference.start = difference.start._getTransformedByDeletion( b.sourcePosition, b.howMany );\n\t\t\t\tdifference.end = difference.end._getTransformedByDeletion( b.sourcePosition, b.howMany );\n\n\t\t\t\t// MoveOperation pastes nodes into target position. We acknowledge this by proper transformation.\n\t\t\t\t// Note that since we operate on transformed difference range, we should transform by\n\t\t\t\t// previously transformed target position.\n\t\t\t\t// Note that we do not use Position._getTransformedByMove on range boundaries because we need to\n\t\t\t\t// transform by insertion a range as a whole, since newTargetPosition might be inside that range.\n\t\t\t\tranges = difference._getTransformedByInsertion( b.getMovedRangeStart(), b.howMany, true, false ).reverse();\n\t\t\t}\n\n\t\t\tif ( common !== null ) {\n\t\t\t\t// Here we do not need to worry that newTargetPosition is inside moved range, because that\n\t\t\t\t// would mean that the MoveOperation targets into itself, and that is incorrect operation.\n\t\t\t\t// Instead, we calculate the new position of that part of original range.\n\t\t\t\tcommon.start = common.start._getCombined( b.sourcePosition, b.getMovedRangeStart() );\n\t\t\t\tcommon.end = common.end._getCombined( b.sourcePosition, b.getMovedRangeStart() );\n\n\t\t\t\tranges.push( common );\n\t\t\t}\n\n\t\t\t// Map transformed range(s) to operations and return them.\n\t\t\treturn ranges.map( ( range ) => {\n\t\t\t\treturn new AttributeOperation( range, a.key, a.oldValue, a.newValue, a.baseVersion );\n\t\t\t} );\n\t\t}\n\t},\n\n\tRootAttributeOperation: {\n\t\tInsertOperation: doNotUpdate,\n\n\t\tAttributeOperation: doNotUpdate,\n\n\t\t// Transforms RootAttributeOperation `a` by RootAttributeOperation `b`. Accepts a flag stating whether `a` is more important\n\t\t// than `b` when it comes to resolving conflicts. Returns results as an array of operations.\n\t\tRootAttributeOperation( a, b, isStrong ) {\n\t\t\tif ( a.root === b.root && a.key === b.key ) {\n\t\t\t\tif ( ( a.newValue !== b.newValue && !isStrong ) || a.newValue === b.newValue ) {\n\t\t\t\t\treturn [ new NoOperation( a.baseVersion ) ];\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn [ a.clone() ];\n\t\t},\n\n\t\tRenameOperation: doNotUpdate,\n\n\t\tMarkerOperation: doNotUpdate,\n\n\t\tMoveOperation: doNotUpdate\n\t},\n\n\tRenameOperation: {\n\t\t// Transforms RenameOperation `a` by InsertOperation `b`. Returns results as an array of operations.\n\t\tInsertOperation( a, b ) {\n\t\t\t// Clone the operation, we don't want to alter the original operation.\n\t\t\tconst clone = a.clone();\n\n\t\t\t// Transform this operation's position.\n\t\t\tclone.position = clone.position._getTransformedByInsertion( b.position, b.nodes.maxOffset, true );\n\n\t\t\treturn [ clone ];\n\t\t},\n\n\t\tAttributeOperation: doNotUpdate,\n\n\t\tRootAttributeOperation: doNotUpdate,\n\n\t\t// Transforms RenameOperation `a` by RenameOperation `b`. Accepts a flag stating whether `a` is more important\n\t\t// than `b` when it comes to resolving conflicts. Returns results as an array of operations.\n\t\tRenameOperation( a, b, isStrong ) {\n\t\t\t// Clone the operation, we don't want to alter the original operation.\n\t\t\tconst clone = a.clone();\n\n\t\t\tif ( a.position.isEqual( b.position ) ) {\n\t\t\t\tif ( isStrong ) {\n\t\t\t\t\tclone.oldName = b.newName;\n\t\t\t\t} else {\n\t\t\t\t\treturn [ new NoOperation( a.baseVersion ) ];\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn [ clone ];\n\t\t},\n\n\t\tMarkerOperation: doNotUpdate,\n\n\t\t// Transforms RenameOperation `a` by MoveOperation `b`. Returns results as an array of operations.\n\t\tMoveOperation( a, b ) {\n\t\t\tconst clone = a.clone();\n\t\t\tconst isSticky = clone.position.isEqual( b.sourcePosition );\n\n\t\t\tclone.position = clone.position._getTransformedByMove( b.sourcePosition, b.targetPosition, b.howMany, true, isSticky );\n\n\t\t\treturn [ clone ];\n\t\t}\n\t},\n\n\tMarkerOperation: {\n\t\t// Transforms MarkerOperation `a` by InsertOperation `b`. Returns results as an array of operations.\n\t\tInsertOperation( a, b ) {\n\t\t\t// Clone the operation, we don't want to alter the original operation.\n\t\t\tconst clone = a.clone();\n\n\t\t\tif ( clone.oldRange ) {\n\t\t\t\tclone.oldRange = clone.oldRange._getTransformedByInsertion( b.position, b.nodes.maxOffset, false, false )[ 0 ];\n\t\t\t}\n\n\t\t\tif ( clone.newRange ) {\n\t\t\t\tclone.newRange = clone.newRange._getTransformedByInsertion( b.position, b.nodes.maxOffset, false, false )[ 0 ];\n\t\t\t}\n\n\t\t\treturn [ clone ];\n\t\t},\n\n\t\tAttributeOperation: doNotUpdate,\n\n\t\tRootAttributeOperation: doNotUpdate,\n\n\t\tRenameOperation: doNotUpdate,\n\n\t\t// Transforms MarkerOperation `a` by MarkerOperation `b`. Accepts a flag stating whether `a` is more important\n\t\t// than `b` when it comes to resolving conflicts. Returns results as an array of operations.\n\t\tMarkerOperation( a, b, isStrong ) {\n\t\t\t// Clone the operation, we don't want to alter the original operation.\n\t\t\tconst clone = a.clone();\n\n\t\t\tif ( a.name == b.name ) {\n\t\t\t\tif ( isStrong ) {\n\t\t\t\t\tclone.oldRange = b.newRange;\n\t\t\t\t} else {\n\t\t\t\t\treturn [ new NoOperation( a.baseVersion ) ];\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn [ clone ];\n\t\t},\n\n\t\t// Transforms MarkerOperation `a` by MoveOperation `b`. Returns results as an array of operations.\n\t\tMoveOperation( a, b ) {\n\t\t\t// Clone the operation, we don't want to alter the original operation.\n\t\t\tconst clone = a.clone();\n\n\t\t\tif ( clone.oldRange ) {\n\t\t\t\tconst oldRanges = clone.oldRange._getTransformedByMove( b.sourcePosition, b.targetPosition, b.howMany );\n\t\t\t\tclone.oldRange = Range.createFromRanges( oldRanges );\n\t\t\t}\n\n\t\t\tif ( clone.newRange ) {\n\t\t\t\tconst newRanges = clone.newRange._getTransformedByMove( b.sourcePosition, b.targetPosition, b.howMany );\n\t\t\t\tclone.newRange = Range.createFromRanges( newRanges );\n\t\t\t}\n\n\t\t\treturn [ clone ];\n\t\t}\n\t},\n\n\tMoveOperation: {\n\t\t// Transforms MoveOperation `a` by InsertOperation `b`. Accepts a flag stating whether `a` is more important\n\t\t// than `b` when it comes to resolving conflicts. Returns results as an array of operations.\n\t\tInsertOperation( a, b, isStrong ) {\n\t\t\t// Create range from MoveOperation properties and transform it by insertion.\n\t\t\tlet range = Range.createFromPositionAndShift( a.sourcePosition, a.howMany );\n\t\t\trange = range._getTransformedByInsertion( b.position, b.nodes.maxOffset, false, a.isSticky )[ 0 ];\n\n\t\t\tlet result = new a.constructor(\n\t\t\t\trange.start,\n\t\t\t\trange.end.offset - range.start.offset,\n\t\t\t\ta instanceof RemoveOperation ?\n\t\t\t\t\ta.baseVersion :\n\t\t\t\t\ta.targetPosition._getTransformedByInsertion( b.position, b.nodes.maxOffset, !isStrong ),\n\t\t\t\ta instanceof RemoveOperation ? undefined : a.baseVersion\n\t\t\t);\n\n\t\t\tresult.isSticky = a.isSticky;\n\t\t\tresult._holderElementOffset = a._holderElementOffset;\n\n\t\t\treturn [ result ];\n\t\t},\n\n\t\tAttributeOperation: doNotUpdate,\n\n\t\tRootAttributeOperation: doNotUpdate,\n\n\t\tRenameOperation: doNotUpdate,\n\n\t\tMarkerOperation: doNotUpdate,\n\n\t\t// Transforms MoveOperation `a` by MoveOperation `b`. Accepts a flag stating whether `a` is more important\n\t\t// than `b` when it comes to resolving conflicts. Returns results as an array of operations.\n\t\tMoveOperation( a, b, isStrong ) {\n\t\t\t// Special case when both move operations' target positions are inside nodes that are\n\t\t\t// being moved by the other move operation. So in other words, we move ranges into inside of each other.\n\t\t\t// This case can't be solved reasonably (on the other hand, it should not happen often).\n\t\t\tif ( moveTargetIntoMovedRange( a, b ) && moveTargetIntoMovedRange( b, a ) ) {\n\t\t\t\t// Instead of transforming operation, we return a reverse of the operation that we transform by.\n\t\t\t\t// So when the results of this \"transformation\" will be applied, `b` MoveOperation will get reversed.\n\t\t\t\treturn [ b.getReversed() ];\n\t\t\t}\n\n\t\t\t// Special case when both operations are RemoveOperations. RemoveOperation not only moves nodes but also\n\t\t\t// (usually) creates a \"holder\" element for them in graveyard. Each RemoveOperation should move nodes to different\n\t\t\t// \"holder\" element. If `a` operation points after `b` operation, we move `a` offset to acknowledge\n\t\t\t// \"holder\" element insertion.\n\t\t\tif ( a instanceof RemoveOperation && b instanceof RemoveOperation ) {\n\t\t\t\tconst aTarget = a.targetPosition.path[ 0 ];\n\t\t\t\tconst bTarget = b.targetPosition.path[ 0 ];\n\n\t\t\t\tif ( aTarget >= bTarget && isStrong ) {\n\t\t\t\t\t// Do not change original operation!\n\t\t\t\t\ta = a.clone();\n\t\t\t\t\ta.targetPosition.path[ 0 ]++;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// If only one of operations is a remove operation, we force remove operation to be the \"stronger\" one\n\t\t\t// to provide more expected results.\n\t\t\tif ( a instanceof RemoveOperation && !( b instanceof RemoveOperation ) ) {\n\t\t\t\tisStrong = true;\n\t\t\t} else if ( !( a instanceof RemoveOperation ) && b instanceof RemoveOperation ) {\n\t\t\t\tisStrong = false;\n\t\t\t}\n\n\t\t\t// Create ranges from MoveOperations properties.\n\t\t\tconst rangeA = Range.createFromPositionAndShift( a.sourcePosition, a.howMany );\n\t\t\tconst rangeB = Range.createFromPositionAndShift( b.sourcePosition, b.howMany );\n\n\t\t\t// This will aggregate transformed ranges.\n\t\t\tlet ranges = [];\n\n\t\t\t// All the other non-special cases are treated by generic algorithm below.\n\t\t\tlet difference = joinRanges( rangeA.getDifference( rangeB ) );\n\n\t\t\tif ( difference ) {\n\t\t\t\tdifference.start = difference.start._getTransformedByMove( b.sourcePosition, b.targetPosition, b.howMany, !a.isSticky, false );\n\t\t\t\tdifference.end = difference.end._getTransformedByMove( b.sourcePosition, b.targetPosition, b.howMany, a.isSticky, false );\n\n\t\t\t\tranges.push( difference );\n\t\t\t}\n\n\t\t\t// Then, we have to manage the common part of both move ranges.\n\t\t\tconst common = rangeA.getIntersection( rangeB );\n\n\t\t\t// If MoveOperations has common range it can be one of two:\n\t\t\t// * on the same tree level - it means that we move the same nodes into different places\n\t\t\t// * on deeper tree level - it means that we move nodes that are inside moved nodes\n\t\t\t// The operations are conflicting only if they try to move exactly same nodes, so only in the first case.\n\t\t\t// That means that we transform common part in two cases:\n\t\t\t// * `rangeA` is \"deeper\" than `rangeB` so it does not collide\n\t\t\t// * `rangeA` is at the same level but is stronger than `rangeB`.\n\t\t\tlet aCompB = compareArrays( a.sourcePosition.getParentPath(), b.sourcePosition.getParentPath() );\n\n\t\t\t// If the `b` MoveOperation points inside the `a` MoveOperation range, the common part will be included in\n\t\t\t// range(s) that (is) are results of processing `difference`. If that's the case, we cannot include it again.\n\t\t\tlet bTargetsToA = rangeA.containsPosition( b.targetPosition ) ||\n\t\t\t\t( rangeA.start.isEqual( b.targetPosition ) && a.isSticky ) ||\n\t\t\t\t( rangeA.end.isEqual( b.targetPosition ) && a.isSticky );\n\n\t\t\t// If the `b` MoveOperation range contains both whole `a` range and target position we do an exception and\n\t\t\t// transform `a` operation. Normally, when same nodes are moved, we stick with stronger operation's target.\n\t\t\t// Here it is a move inside larger range so there is no conflict because after all, all nodes from\n\t\t\t// smaller range will be moved to larger range target. The effect of this transformation feels natural.\n\t\t\t// Also if we wouldn't do that, we would get different results on both sides of transformation (i.e. in\n\t\t\t// collaborative editing).\n\t\t\tlet aIsInside = rangeB.containsRange( rangeA ) &&\n\t\t\t\t( rangeB.containsPosition( a.targetPosition ) || rangeB.start.isEqual( a.targetPosition ) || rangeB.end.isEqual( a.targetPosition ) );\n\n\t\t\tif ( common !== null && ( aCompB === 'extension' || ( aCompB === 'same' && isStrong ) || aIsInside ) && !bTargetsToA ) {\n\t\t\t\t// Here we do not need to worry that newTargetPosition is inside moved range, because that\n\t\t\t\t// would mean that the MoveOperation targets into itself, and that is incorrect operation.\n\t\t\t\t// Instead, we calculate the new position of that part of original range.\n\t\t\t\tcommon.start = common.start._getCombined( b.sourcePosition, b.getMovedRangeStart() );\n\t\t\t\tcommon.end = common.end._getCombined( b.sourcePosition, b.getMovedRangeStart() );\n\n\t\t\t\t// We have to take care of proper range order.\n\t\t\t\tif ( difference && rangeA.start.isBefore( rangeB.start ) ) {\n\t\t\t\t\tranges.push( common );\n\t\t\t\t} else {\n\t\t\t\t\tranges.unshift( common );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// At this point we transformed this operation's source ranges it means that nothing should be changed.\n\t\t\t// But since we need to return an instance of Operation we return an array with NoOperation.\n\t\t\tif ( ranges.length === 0 ) {\n\t\t\t\tif ( a instanceof RemoveOperation ) {\n\t\t\t\t\t// If `a` operation was RemoveOperation, we cannot convert it to NoOperation.\n\t\t\t\t\t// This is because RemoveOperation creates a holder in graveyard.\n\t\t\t\t\t// Even if we \"remove nothing\" we need a RemoveOperation to create holder element\n\t\t\t\t\t// so that the tree structure is synchronised between clients.\n\t\t\t\t\t// Note that this can happen only if both operations are remove operations, because in\n\t\t\t\t\t// other case RemoveOperation would be forced to be stronger and there would be a common range to move.\n\t\t\t\t\ta = a.clone();\n\t\t\t\t\ta.howMany = 0;\n\t\t\t\t\ta.sourcePosition = b.targetPosition;\n\n\t\t\t\t\treturn [ a ];\n\t\t\t\t} else {\n\t\t\t\t\treturn [ new NoOperation( a.baseVersion ) ];\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Target position also could be affected by the other MoveOperation. We will transform it.\n\t\t\tlet newTargetPosition = a.targetPosition._getTransformedByMove(\n\t\t\t\tb.sourcePosition,\n\t\t\t\tb.targetPosition,\n\t\t\t\tb.howMany,\n\t\t\t\t!isStrong,\n\t\t\t\tb.isSticky || aIsInside\n\t\t\t);\n\n\t\t\t// Map transformed range(s) to operations and return them.\n\t\t\treturn ranges.reverse().map( ( range ) => {\n\t\t\t\t// We want to keep correct operation class.\n\t\t\t\tlet result = new a.constructor(\n\t\t\t\t\trange.start,\n\t\t\t\t\trange.end.offset - range.start.offset,\n\t\t\t\t\ta instanceof RemoveOperation ? a.baseVersion : newTargetPosition,\n\t\t\t\t\ta instanceof RemoveOperation ? undefined : a.baseVersion\n\t\t\t\t);\n\n\t\t\t\tresult.isSticky = a.isSticky;\n\t\t\t\tresult._holderElementOffset = a._holderElementOffset;\n\n\t\t\t\treturn result;\n\t\t\t} );\n\t\t}\n\t}\n};\n\nfunction transform( a, b, isStrong ) {\n\tlet group;\n\tlet algorithm;\n\n\tif ( a instanceof InsertOperation ) {\n\t\tgroup = ot.InsertOperation;\n\t} else if ( a instanceof AttributeOperation ) {\n\t\tgroup = ot.AttributeOperation;\n\t} else if ( a instanceof RootAttributeOperation ) {\n\t\tgroup = ot.RootAttributeOperation;\n\t} else if ( a instanceof RenameOperation ) {\n\t\tgroup = ot.RenameOperation;\n\t} else if ( a instanceof MarkerOperation ) {\n\t\tgroup = ot.MarkerOperation;\n\t} else if ( a instanceof MoveOperation ) {\n\t\tgroup = ot.MoveOperation;\n\t} else {\n\t\talgorithm = doNotUpdate;\n\t}\n\n\tif ( group ) {\n\t\tif ( b instanceof InsertOperation ) {\n\t\t\talgorithm = group.InsertOperation;\n\t\t} else if ( b instanceof AttributeOperation ) {\n\t\t\talgorithm = group.AttributeOperation;\n\t\t} else if ( b instanceof RootAttributeOperation ) {\n\t\t\talgorithm = group.RootAttributeOperation;\n\t\t} else if ( b instanceof RenameOperation ) {\n\t\t\talgorithm = group.RenameOperation;\n\t\t} else if ( b instanceof MarkerOperation ) {\n\t\t\talgorithm = group.MarkerOperation;\n\t\t} else if ( b instanceof MoveOperation ) {\n\t\t\talgorithm = group.MoveOperation;\n\t\t} else {\n\t\t\talgorithm = doNotUpdate;\n\t\t}\n\t}\n\n\tlet transformed = algorithm( a, b, isStrong );\n\n\treturn updateBaseVersions( a.baseVersion, transformed );\n}\n\n// When we don't want to update an operation, we create and return a clone of it.\n// Returns the operation in \"unified format\" - wrapped in an Array.\nfunction doNotUpdate( operation ) {\n\treturn [ operation.clone() ];\n}\n\n// Takes an Array of operations and sets consecutive base versions for them, starting from given base version.\n// Returns the passed array.\nfunction updateBaseVersions( baseVersion, operations ) {\n\tfor ( let i = 0; i < operations.length; i++ ) {\n\t\toperations[ i ].baseVersion = baseVersion + i + 1;\n\t}\n\n\treturn operations;\n}\n\n// Checks whether MoveOperation targetPosition is inside a node from the moved range of the other MoveOperation.\nfunction moveTargetIntoMovedRange( a, b ) {\n\treturn a.targetPosition._getTransformedByDeletion( b.sourcePosition, b.howMany ) === null;\n}\n\n// Gets an array of Ranges and produces one Range out of it. The root of a new range will be same as\n// the root of the first range in the array. If any of given ranges has different root than the first range,\n// it will be discarded.\nfunction joinRanges( ranges ) {\n\tif ( ranges.length === 0 ) {\n\t\treturn null;\n\t} else if ( ranges.length == 1 ) {\n\t\treturn ranges[ 0 ];\n\t} else {\n\t\tranges[ 0 ].end = ranges[ ranges.length - 1 ].end;\n\n\t\treturn ranges[ 0 ];\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/operation/transform.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/model/schema\n */\n\nimport Position from './position';\nimport Element from './element';\nimport clone from '@ckeditor/ckeditor5-utils/src/lib/lodash/clone';\nimport isArray from '@ckeditor/ckeditor5-utils/src/lib/lodash/isArray';\nimport isString from '@ckeditor/ckeditor5-utils/src/lib/lodash/isString';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/**\n * Schema is a definition of the structure of the document. It allows to define which tree model items (element, text, etc.)\n * can be nested within which ones and which attributes can be applied to them. It's created during the run-time of the application,\n * typically by features. Also, the features can query the schema to learn what structure is allowed and act accordingly.\n *\n * For instance, if a feature wants to define that an attribute bold is allowed on the text it needs to register this rule like this:\n *\n *\t\teditor.document.schema.allow( '$text', 'bold' );\n *\n * Note: items prefixed with `$` are special group of items. By default, `Schema` defines three special items:\n *\n * * `$inline` represents all inline elements,\n * * `$text` is a sub-group of `$inline` and represents text nodes,\n * * `$block` represents block elements,\n * * `$root` represents default editing roots (those that allow only `$block`s inside them).\n *\n * When registering an item it's possible to tell that this item should inherit from some other existing item.\n * E.g. `p` can inherit from `$block`, so whenever given attribute is allowed on the `$block` it will automatically be\n * also allowed on the `p` element. By default, `$text` item already inherits from `$inline`.\n */\nexport default class Schema {\n\t/**\n\t * Creates Schema instance.\n\t */\n\tconstructor() {\n\t\t/**\n\t\t * Names of elements which have \"object\" nature. This means that these\n\t\t * elements should be treated as whole, never merged, can be selected from outside, etc.\n\t\t * Just like images, placeholder widgets, etc.\n\t\t *\n\t\t * @member {Set.<String>} module:engine/model/schema~Schema#objects\n\t\t */\n\t\tthis.objects = new Set();\n\n\t\t/**\n\t\t * Names of elements to which editing operations should be limited.\n\t\t * For example, the <kbd>Enter</kbd> should not split such elements and\n\t\t * <kbd>Backspace</kbd> should not be able to leave or modify such elements.\n\t\t *\n\t\t * @member {Set.<String>} module:engine/model/schema~Schema#limits\n\t\t */\n\t\tthis.limits = new Set();\n\n\t\t/**\n\t\t * Schema items registered in the schema.\n\t\t *\n\t\t * @private\n\t\t * @member {Map} module:engine/model/schema~Schema#_items\n\t\t */\n\t\tthis._items = new Map();\n\n\t\t/**\n\t\t * Description of what entities are a base for given entity.\n\t\t *\n\t\t * @private\n\t\t * @member {Map} module:engine/model/schema~Schema#_extensionChains\n\t\t */\n\t\tthis._extensionChains = new Map();\n\n\t\t// Register some default abstract entities.\n\t\tthis.registerItem( '$root' );\n\t\tthis.registerItem( '$block' );\n\t\tthis.registerItem( '$inline' );\n\t\tthis.registerItem( '$text', '$inline' );\n\n\t\tthis.allow( { name: '$block', inside: '$root' } );\n\t\tthis.allow( { name: '$inline', inside: '$block' } );\n\n\t\t// TMP!\n\t\t// Create an \"all allowed\" context in the schema for processing the pasted content.\n\t\t// Read: https://github.com/ckeditor/ckeditor5-engine/issues/638#issuecomment-255086588\n\n\t\tthis.registerItem( '$clipboardHolder', '$root' );\n\t\tthis.allow( { name: '$inline', inside: '$clipboardHolder' } );\n\t}\n\n\t/**\n\t * Allows given query in the schema.\n\t *\n\t *\t\t// Allow text with bold attribute in all P elements.\n\t *\t\tschema.registerItem( 'p', '$block' );\n\t *\t\tschema.allow( { name: '$text', attributes: 'bold', inside: 'p' } );\n\t *\n\t *\t\t// Allow header in Ps that are in DIVs\n\t *\t\tschema.registerItem( 'header', '$block' );\n\t *\t\tschema.registerItem( 'div', '$block' );\n\t *\t\tschema.allow( { name: 'header', inside: 'div p' } ); // inside: [ 'div', 'p' ] would also work.\n\t *\n\t * @param {module:engine/model/schema~SchemaQuery} query Allowed query.\n\t */\n\tallow( query ) {\n\t\tthis._getItem( query.name ).allow( Schema._normalizeQueryPath( query.inside ), query.attributes );\n\t}\n\n\t/**\n\t * Disallows given query in the schema.\n\t *\n\t * @see #allow\n\t * @param {module:engine/model/schema~SchemaQuery} query Disallowed query.\n\t */\n\tdisallow( query ) {\n\t\tthis._getItem( query.name ).disallow( Schema._normalizeQueryPath( query.inside ), query.attributes );\n\t}\n\n\t/**\n\t * Makes a requirement in schema that entity represented by given item has to have given set of attributes. Some\n\t * elements in the model might require some attributes to be set. If multiple sets of attributes are required it\n\t * is enough that the entity fulfills only one set.\n\t *\n\t *\t\t// \"a\" element must either have \"href\" attribute or \"name\" attribute\n\t *\t\tschema.requireAttributes( 'a', [ 'href' ] );\n\t *\t\tschema.requireAttributes( 'a', [ 'name' ] );\n\t *\t\t// \"img\" element must have both \"src\" and \"alt\" attributes\n\t *\t\tschema.requireAttributes( 'img', [ 'src', 'alt' ] );\n\t *\n\t * @param {String} name Entity name.\n\t * @param {Array.<String>} attributes Attributes that has to be set on the entity to make it valid.\n\t */\n\trequireAttributes( name, attributes ) {\n\t\tthis._getItem( name ).requireAttributes( attributes );\n\t}\n\n\t/**\n\t * Checks whether given query is allowed in schema.\n\t *\n\t *\t\t// Check whether bold text is allowed in header element.\n\t *\t\tlet query = {\n\t *\t\t\tname: '$text',\n\t *\t\t\tattributes: 'bold',\n\t *\t\t\tinside: 'header'\n\t *\t\t};\n\t *\t\tif ( schema.check( query ) ) { ... }\n\t *\n\t *\t\t// Check whether bold and italic text can be placed at caret position.\n\t *\t\tlet caretPos = editor.document.selection.getFirstPosition();\n\t *\t\tlet query = {\n\t *\t\t\tname: '$text',\n\t *\t\t\tattributes: [ 'bold', 'italic' ],\n\t *\t\t\tinside: caretPos\n\t *\t\t};\n\t *\t\tif ( schema.check( query ) ) { ... }\n\t *\n\t *\t\t// Check whether image with alt, src and title is allowed in given elements path.\n\t *\t\tlet quoteElement = new Element( 'quote' );\n\t *\t\tlet query = {\n\t *\t\t\tname: 'img',\n\t *\t\t\tattributes: [ 'alt', 'src', 'title' ],\n\t *\t\t\t// It is possible to mix strings with elements.\n\t *\t\t\t// Query will check whether \"img\" can be inside \"quoteElement\" that is inside a block element.\n\t *\t\t\tinside: [ '$block', quoteElement ]\n\t *\t\t};\n\t *\t\tif ( schema.check( query ) ) { ... }\n\t *\n\t * @param {module:engine/model/schema~SchemaQuery} query Query to check.\n\t * @returns {Boolean} `true` if given query is allowed in schema, `false` otherwise.\n\t */\n\tcheck( query ) {\n\t\tif ( !this.hasItem( query.name ) ) {\n\t\t\treturn false;\n\t\t}\n\n\t\t// If attributes property is a string or undefined, wrap it in an array for easier processing.\n\t\tif ( !isArray( query.attributes ) ) {\n\t\t\tquery.attributes = [ query.attributes ];\n\t\t} else if ( query.attributes.length === 0 ) {\n\t\t\t// To simplify algorithms, when a SchemaItem path is added \"without\" attribute, it is added with\n\t\t\t// attribute equal to undefined. This means that algorithms can work the same way for specified attributes\n\t\t\t// and no-atrtibutes, but we have to fill empty array with \"fake\" undefined value for algorithms reasons.\n\t\t\tquery.attributes.push( undefined );\n\t\t}\n\n\t\t// Normalize the path to an array of strings.\n\t\tconst path = Schema._normalizeQueryPath( query.inside );\n\n\t\t// Get extension chain of given item and retrieve all schema items that are extended by given item.\n\t\tconst schemaItems = this._extensionChains.get( query.name ).map( ( name ) => {\n\t\t\treturn this._getItem( name );\n\t\t} );\n\n\t\t// First check if the query meets at required attributes for this item.\n\t\tif ( !this._getItem( query.name )._checkRequiredAttributes( query.attributes ) ) {\n\t\t\treturn false;\n\t\t}\n\n\t\t// If there is matching disallow path, this query is not valid with schema.\n\t\tfor ( let attribute of query.attributes ) {\n\t\t\tfor ( let schemaItem of schemaItems ) {\n\t\t\t\tif ( schemaItem._hasMatchingPath( 'disallow', path, attribute ) ) {\n\t\t\t\t\treturn false;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t// At this point, the query is not disallowed.\n\t\t// If there are correct allow paths that match the query, this query is valid with schema.\n\t\t// Since we are supporting multiple attributes, we have to make sure that if attributes are set,\n\t\t// we have allowed paths for all of them.\n\t\t// Keep in mind that if the query has no attributes, query.attribute was converted to an array\n\t\t// with a single `undefined` value. This fits the algorithm well.\n\t\tfor ( let attribute of query.attributes ) {\n\t\t\tlet matched = false;\n\n\t\t\tfor ( let schemaItem of schemaItems ) {\n\t\t\t\tif ( schemaItem._hasMatchingPath( 'allow', path, attribute ) ) {\n\t\t\t\t\tmatched = true;\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// The attribute has not been matched, so it is not allowed by any schema item.\n\t\t\t// The query is disallowed.\n\t\t\tif ( !matched ) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t}\n\n\t\treturn true;\n\t}\n\n\t/**\n\t * Checks whether there is an item registered under given name in schema.\n\t *\n\t * @param itemName\n\t * @returns {Boolean}\n\t */\n\thasItem( itemName ) {\n\t\treturn this._items.has( itemName );\n\t}\n\n\t/**\n\t * Registers given item name in schema.\n\t *\n\t *\t\t// Register P element that should be treated like all block elements.\n\t *\t\tschema.registerItem( 'p', '$block' );\n\t *\n\t * @param {String} itemName Name to register.\n\t * @param [isExtending] If set, new item will extend item with given name.\n\t */\n\tregisterItem( itemName, isExtending ) {\n\t\tif ( this.hasItem( itemName ) ) {\n\t\t\t/**\n\t\t\t * Item with specified name already exists in schema.\n\t\t\t *\n\t\t\t * @error model-schema-item-exists\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'model-schema-item-exists: Item with specified name already exists in schema.' );\n\t\t}\n\n\t\tif ( !!isExtending && !this.hasItem( isExtending ) ) {\n\t\t\t/**\n\t\t\t * Item with specified name does not exist in schema.\n\t\t\t *\n\t\t\t * @error model-schema-no-item\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'model-schema-no-item: Item with specified name does not exist in schema.' );\n\t\t}\n\n\t\t// Create new SchemaItem and add it to the items store.\n\t\tthis._items.set( itemName, new SchemaItem( this ) );\n\n\t\t// Create an extension chain.\n\t\t// Extension chain has all item names that should be checked when that item is on path to check.\n\t\t// This simply means, that if item is not extending anything, it should have only itself in it's extension chain.\n\t\t// Since extending is not dynamic, we can simply get extension chain of extended item and expand it with registered name,\n\t\t// if the registered item is extending something.\n\t\tconst chain = this.hasItem( isExtending ) ? this._extensionChains.get( isExtending ).concat( itemName ) : [ itemName ];\n\t\tthis._extensionChains.set( itemName, chain );\n\t}\n\n\t/**\n\t * Checks whether item of given name is extending item of another given name.\n\t *\n\t * @param {String} childItemName Name of the child item.\n\t * @param {String} parentItemName Name of the parent item.\n\t * @returns {Boolean} `true` if child item extends parent item, `false` otherwise.\n\t */\n\titemExtends( childItemName, parentItemName ) {\n\t\tif ( !this.hasItem( childItemName ) || !this.hasItem( parentItemName ) ) {\n\t\t\t/**\n\t\t\t * Item with specified name does not exist in schema.\n\t\t\t *\n\t\t\t * @error model-schema-no-item\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'model-schema-no-item: Item with specified name does not exist in schema.' );\n\t\t}\n\n\t\tconst chain = this._extensionChains.get( childItemName );\n\n\t\treturn chain.some( itemName => itemName == parentItemName );\n\t}\n\n\t/**\n\t * Returns {@link module:engine/model/schema~SchemaItem schema item} that was registered in the schema under given name.\n\t * If item has not been found, throws error.\n\t *\n\t * @private\n\t * @param {String} itemName Name to look for in schema.\n\t * @returns {module:engine/model/schema~SchemaItem} Schema item registered under given name.\n\t */\n\t_getItem( itemName ) {\n\t\tif ( !this.hasItem( itemName ) ) {\n\t\t\t/**\n\t\t\t * Item with specified name does not exist in schema.\n\t\t\t *\n\t\t\t * @error model-schema-no-item\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'model-schema-no-item: Item with specified name does not exist in schema.' );\n\t\t}\n\n\t\treturn this._items.get( itemName );\n\t}\n\n\t/**\n\t * Normalizes a path to an entity by converting it from {@link module:engine/model/schema~SchemaPath} to an array of strings.\n\t *\n\t * @protected\n\t * @param {module:engine/model/schema~SchemaPath} path Path to normalize.\n\t * @returns {Array.<String>} Normalized path.\n\t */\n\tstatic _normalizeQueryPath( path ) {\n\t\tlet normalized = [];\n\n\t\tif ( isArray( path ) ) {\n\t\t\tfor ( let pathItem of path ) {\n\t\t\t\tif ( pathItem instanceof Element ) {\n\t\t\t\t\tnormalized.push( pathItem.name );\n\t\t\t\t} else if ( isString( pathItem ) ) {\n\t\t\t\t\tnormalized.push( pathItem );\n\t\t\t\t}\n\t\t\t}\n\t\t} else if ( path instanceof Position ) {\n\t\t\tlet parent = path.parent;\n\n\t\t\twhile ( parent !== null ) {\n\t\t\t\tnormalized.push( parent.name );\n\t\t\t\tparent = parent.parent;\n\t\t\t}\n\n\t\t\tnormalized.reverse();\n\t\t} else if ( isString( path ) ) {\n\t\t\tnormalized = path.split( ' ' );\n\t\t}\n\n\t\treturn normalized;\n\t}\n}\n\n/**\n * SchemaItem is a singular registry item in {@link module:engine/model/schema~Schema} that groups and holds allow/disallow rules for\n * one entity. This class is used internally in {@link module:engine/model/schema~Schema} and should not be used outside it.\n *\n * @see module:engine/model/schema~Schema\n * @protected\n */\nexport class SchemaItem {\n\t/**\n\t * Creates SchemaItem instance.\n\t *\n\t * @param {module:engine/model/schema~Schema} schema Schema instance that owns this item.\n\t */\n\tconstructor( schema ) {\n\t\t/**\n\t\t * Schema instance that owns this item.\n\t\t *\n\t\t * @private\n\t\t * @member {module:engine/model/schema~Schema} module:engine/model/schema~SchemaItem#_schema\n\t\t */\n\t\tthis._schema = schema;\n\n\t\t/**\n\t\t * Paths in which the entity, represented by this item, is allowed.\n\t\t *\n\t\t * @private\n\t\t * @member {Array} module:engine/model/schema~SchemaItem#_allowed\n\t\t */\n\t\tthis._allowed = [];\n\n\t\t/**\n\t\t * Paths in which the entity, represented by this item, is disallowed.\n\t\t *\n\t\t * @private\n\t\t * @member {Array} module:engine/model/schema~SchemaItem#_disallowed\n\t\t */\n\t\tthis._disallowed = [];\n\n\t\t/**\n\t\t * Attributes that are required by the entity represented by this item.\n\t\t *\n\t\t * @protected\n\t\t * @member {Array} module:engine/model/schema~SchemaItem#_requiredAttributes\n\t\t */\n\t\tthis._requiredAttributes = [];\n\t}\n\n\t/**\n\t * Allows entity, represented by this item, to be in given path.\n\t *\n\t * @param {Array.<String>} path Path in which entity is allowed.\n\t * @param {Array.<String>|String} [attributes] If set, this path will be used only for entities that have attribute(s) with this key.\n\t */\n\tallow( path, attributes ) {\n\t\tthis._addPath( '_allowed', path, attributes );\n\t}\n\n\t/**\n\t * Disallows entity, represented by this item, to be in given path.\n\t *\n\t * @param {Array.<String>} path Path in which entity is disallowed.\n\t * @param {Array.<String>|String} [attributes] If set, this path will be used only for entities that have an attribute(s) with this key.\n\t */\n\tdisallow( path, attributes ) {\n\t\tthis._addPath( '_disallowed', path, attributes );\n\t}\n\n\t/**\n\t * Specifies that the entity, to be valid, requires given attributes set. It is possible to register multiple\n\t * different attributes set. If there are more than one attributes set required, the entity will be valid if\n\t * at least one of them is fulfilled.\n\t *\n\t * @param {Array.<String>} attributes Attributes that has to be set on the entity to make it valid.\n\t */\n\trequireAttributes( attributes ) {\n\t\tthis._requiredAttributes.push( attributes );\n\t}\n\n\t/**\n\t * Adds path to the SchemaItem instance.\n\t *\n\t * @private\n\t * @param {String} member Name of the array member into which the path will be added. Possible values are `_allowed` or `_disallowed`.\n\t * @param {Array.<String>} path Path to add.\n\t * @param {Array.<String>|String} [attributes] If set, this path will be used only for entities that have attribute(s) with this key.\n\t */\n\t_addPath( member, path, attributes ) {\n\t\tpath = path.slice();\n\n\t\tif ( !isArray( attributes ) ) {\n\t\t\tattributes = [ attributes ];\n\t\t}\n\n\t\tfor ( let attribute of attributes ) {\n\t\t\tthis[ member ].push( { path, attribute } );\n\t\t}\n\t}\n\n\t/**\n\t * Returns all paths of given type that were previously registered in the item.\n\t *\n\t * @private\n\t * @param {String} type Paths' type. Possible values are `allow` or `disallow`.\n\t * @param {String} [attribute] If set, only paths registered for given attribute will be returned.\n\t * @returns {Array} Paths registered in the item.\n\t */\n\t_getPaths( type, attribute ) {\n\t\tconst source = type === 'allow' ? this._allowed : this._disallowed;\n\t\tconst paths = [];\n\n\t\tfor ( let item of source ) {\n\t\t\tif ( item.attribute === attribute ) {\n\t\t\t\tpaths.push( item.path );\n\t\t\t}\n\t\t}\n\n\t\treturn paths;\n\t}\n\n\t/**\n\t * Checks whether given set of attributes fulfills required attributes of this item.\n\t *\n\t * @protected\n\t * @see module:engine/model/schema~SchemaItem#requireAttributes\n\t * @param {Array.<String>} attributesToCheck Attributes to check.\n\t * @returns {Boolean} `true` if given set or attributes fulfills required attributes, `false` otherwise.\n\t */\n\t_checkRequiredAttributes( attributesToCheck ) {\n\t\tlet found = true;\n\n\t\tfor ( let attributeSet of this._requiredAttributes ) {\n\t\t\tfound = true;\n\n\t\t\tfor ( let attribute of attributeSet ) {\n\t\t\t\tif ( attributesToCheck.indexOf( attribute ) == -1 ) {\n\t\t\t\t\tfound = false;\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tif ( found ) {\n\t\t\t\tbreak;\n\t\t\t}\n\t\t}\n\n\t\treturn found;\n\t}\n\n\t/**\n\t * Checks whether this item has any registered path of given type that matches the provided path.\n\t *\n\t * @protected\n\t * @param {String} type Paths' type. Possible values are `allow` or `disallow`.\n\t * @param {Array.<String>} pathToCheck Path to check.\n\t * @param {String} [attribute] If set, only paths registered for given attribute will be checked.\n\t * @returns {Boolean} `true` if item has any registered matching path, `false` otherwise.\n\t */\n\t_hasMatchingPath( type, pathToCheck, attribute ) {\n\t\tconst registeredPaths = this._getPaths( type, attribute );\n\n\t\tfor ( const registeredPathPath of registeredPaths ) {\n\t\t\tif ( matchPaths( this._schema, pathToCheck, registeredPathPath ) ) {\n\t\t\t\treturn true;\n\t\t\t}\n\t\t}\n\n\t\treturn false;\n\t}\n\n\t/**\n\t * Custom toJSON method to solve child-parent circular dependencies.\n\t *\n\t * @returns {Object} Clone of this object with the parent property replaced with its name.\n\t */\n\ttoJSON() {\n\t\tconst json = clone( this );\n\n\t\t// Due to circular references we need to remove parent reference.\n\t\tjson._schema = '[model.Schema]';\n\n\t\treturn json;\n\t}\n}\n\n/**\n * Object with query used by {@link module:engine/model/schema~Schema} to query schema or add allow/disallow rules to schema.\n *\n * @typedef {Object} module:engine/model/schema~SchemaQuery\n * @property {String} name Entity name.\n * @property {module:engine/model/schema~SchemaPath} inside Path inside which the entity is placed.\n * @property {Array.<String>|String} [attributes] If set, the query applies only to entities that has attribute(s) with given key.\n */\n\n/**\n * Path to an entity, begins from the top-most ancestor. Can be passed in multiple formats. Internally, normalized to\n * an array of strings. If string is passed, entities from the path should be divided by ` ` (space character). If\n * an array is passed, unrecognized items are skipped. If position is passed, it is assumed that the entity is at given position.\n *\n * @typedef {String|Array.<String|module:engine/model/element~Element>|module:engine/model/position~Position}\n * module:engine/model/schema~SchemaPath\n */\n\n// Checks whether the given pathToCheck and registeredPath right ends match.\n//\n// pathToCheck: C, D\n// registeredPath: A, B, C, D\n// result: OK\n//\n// pathToCheck: A, B, C\n// registeredPath: A, B, C, D\n// result: NOK\n//\n// Note – when matching paths, element extension chains (inheritance) are taken into consideration.\n//\n// @param {Schema} schema\n// @param {Array.<String>} pathToCheck\n// @param {Array.<String>} registeredPath\nfunction matchPaths( schema, pathToCheck, registeredPath ) {\n\t// Start checking from the right end of both tables.\n\tlet registeredPathIndex = registeredPath.length - 1;\n\tlet pathToCheckIndex = pathToCheck.length - 1;\n\n\t// And finish once reaching an end of the shorter table.\n\twhile ( registeredPathIndex >= 0 && pathToCheckIndex >= 0 ) {\n\t\tconst checkName = pathToCheck[ pathToCheckIndex ];\n\n\t\t// Fail when checking a path which contains element which aren't even registered to the schema.\n\t\tif ( !schema.hasItem( checkName ) ) {\n\t\t\treturn false;\n\t\t}\n\n\t\tconst extChain = schema._extensionChains.get( checkName );\n\n\t\tif ( extChain.includes( registeredPath[ registeredPathIndex ] ) ) {\n\t\t\tregisteredPathIndex--;\n\t\t\tpathToCheckIndex--;\n\t\t} else {\n\t\t\treturn false;\n\t\t}\n\t}\n\n\treturn true;\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/model/schema.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/document\n */\n\nimport Selection from './selection';\nimport Renderer from './renderer';\nimport DomConverter from './domconverter';\nimport RootEditableElement from './rooteditableelement';\nimport { injectQuirksHandling } from './filler';\nimport log from '@ckeditor/ckeditor5-utils/src/log';\nimport MutationObserver from './observer/mutationobserver';\nimport SelectionObserver from './observer/selectionobserver';\nimport FocusObserver from './observer/focusobserver';\nimport KeyObserver from './observer/keyobserver';\nimport FakeSelectionObserver from './observer/fakeselectionobserver';\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\nimport ObservableMixin from '@ckeditor/ckeditor5-utils/src/observablemixin';\n\n/**\n * Document class creates an abstract layer over the content editable area.\n * It combines the actual tree of view elements, tree of DOM elements,\n * {@link module:engine/view/domconverter~DomConverter DOM Converter}, {@link module:engine/view/renderer~Renderer renderer} and all\n * {@link module:engine/view/observer/observer~Observer observers}.\n *\n * If you want to only transform the tree of view elements to the DOM elements you can use the\n * {@link module:engine/view/domconverter~DomConverter DomConverter}.\n *\n * Note that the following observers are added by the class constructor and are always available:\n *\n * * {@link module:engine/view/observer/mutationobserver~MutationObserver},\n * * {@link module:engine/view/observer/selectionobserver~SelectionObserver},\n * * {@link module:engine/view/observer/focusobserver~FocusObserver},\n * * {@link module:engine/view/observer/keyobserver~KeyObserver},\n * * {@link module:engine/view/observer/fakeselectionobserver~FakeSelectionObserver}.\n *\n * @mixes module:utils/observablemixin~ObservableMixin\n */\nexport default class Document {\n\t/**\n\t * Creates a Document instance.\n\t */\n\tconstructor() {\n\t\t/**\n\t\t * Roots of the DOM tree. Map on the `HTMLElement`s with roots names as keys.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Map} module:engine/view/document~Document#domRoots\n\t\t */\n\t\tthis.domRoots = new Map();\n\n\t\t/**\n\t\t * Selection done on this document.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/view/selection~Selection} module:engine/view/document~Document#selection\n\t\t */\n\t\tthis.selection = new Selection();\n\n\t\t/**\n\t\t * Instance of the {@link module:engine/view/domconverter~DomConverter domConverter} use by\n\t\t * {@link module:engine/view/document~Document#renderer renderer} and {@link module:engine/view/observer/observer~Observer observers}.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/view/domconverter~DomConverter} module:engine/view/document~Document#domConverter\n\t\t */\n\t\tthis.domConverter = new DomConverter();\n\n\t\t/**\n\t\t * Roots of the view tree. Map of the {module:engine/view/element~Element view elements} with roots names as keys.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Map} module:engine/view/document~Document#roots\n\t\t */\n\t\tthis.roots = new Map();\n\n\t\t/**\n\t\t * True if document is focused.\n\t\t *\n\t\t * This property is updated by the {@link module:engine/view/observer/focusobserver~FocusObserver}.\n\t\t * If the {@link module:engine/view/observer/focusobserver~FocusObserver} is disabled this property will not change.\n\t\t *\n\t\t * @readonly\n\t\t * @observable\n\t\t * @member {Boolean} module:engine/view/document~Document#isFocused\n\t\t */\n\t\tthis.set( 'isFocused', false );\n\n\t\t/**\n\t\t * Instance of the {@link module:engine/view/document~Document#renderer renderer}.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/view/renderer~Renderer} module:engine/view/document~Document#renderer\n\t\t */\n\t\tthis.renderer = new Renderer( this.domConverter, this.selection );\n\t\tthis.renderer.bind( 'isFocused' ).to( this, 'isFocused' );\n\n\t\t/**\n\t\t * Map of registered {@link module:engine/view/observer/observer~Observer observers}.\n\t\t *\n\t\t * @private\n\t\t * @member {Map.<Function, module:engine/view/observer/observer~Observer>} module:engine/view/document~Document#_observers\n\t\t */\n\t\tthis._observers = new Map();\n\n\t\t// Add default observers.\n\t\tthis.addObserver( MutationObserver );\n\t\tthis.addObserver( SelectionObserver );\n\t\tthis.addObserver( FocusObserver );\n\t\tthis.addObserver( KeyObserver );\n\t\tthis.addObserver( FakeSelectionObserver );\n\n\t\tinjectQuirksHandling( this );\n\n\t\t// Listens `render` event on default priority.\n\t\t// This way we can attach other listeners before or after rendering execution.\n\t\tthis.on( 'render', () => {\n\t\t\tthis.disableObservers();\n\t\t\tthis.renderer.render();\n\t\t\tthis.enableObservers();\n\t\t} );\n\t}\n\n\t/**\n\t * Creates observer of the given type if not yet created, {@link module:engine/view/observer/observer~Observer#enable enables} it\n\t * and {@link module:engine/view/observer/observer~Observer#observe attaches} to all existing and future\n\t * {@link module:engine/view/document~Document#domRoots DOM roots}.\n\t *\n\t * Note: Observers are recognized by their constructor (classes). A single observer will be instantiated and used only\n\t * when registered for the first time. This means that features and other components can register a single observer\n\t * multiple times without caring whether it has been already added or not.\n\t *\n\t * @param {Function} Observer The constructor of an observer to add.\n\t * Should create an instance inheriting from {@link module:engine/view/observer/observer~Observer}.\n\t * @returns {module:engine/view/observer/observer~Observer} Added observer instance.\n\t */\n\taddObserver( Observer ) {\n\t\tlet observer = this._observers.get( Observer );\n\n\t\tif ( observer ) {\n\t\t\treturn observer;\n\t\t}\n\n\t\tobserver = new Observer( this );\n\n\t\tthis._observers.set( Observer, observer );\n\n\t\tfor ( let [ name, domElement ] of this.domRoots ) {\n\t\t\tobserver.observe( domElement, name );\n\t\t}\n\n\t\tobserver.enable();\n\n\t\treturn observer;\n\t}\n\n\t/**\n\t * Returns observer of the given type or `undefined` if such observer has not been added yet.\n\t *\n\t * @param {Function} Observer The constructor of an observer to get.\n\t * @returns {module:engine/view/observer/observer~Observer|undefined} Observer instance or undefined.\n\t */\n\tgetObserver( Observer ) {\n\t\treturn this._observers.get( Observer );\n\t}\n\n\t/**\n\t * Creates a {@link module:engine/view/document~Document#roots view root element}.\n\t *\n\t * If the DOM element is passed as a first parameter it will be automatically\n\t * {@link module:engine/view/document~Document#attachDomRoot attached}:\n\t *\n\t *\t\tdocument.createRoot( document.querySelector( 'div#editor' ) ); // Will call document.attachDomRoot.\n\t *\n\t * However, if the string is passed, then only the view element will be created and the DOM element have to be\n\t * attached separately:\n\t *\n\t *\t\tdocument.createRoot( 'body' );\n\t *\t\tdocument.attachDomRoot( document.querySelector( 'body#editor' ) );\n\t *\n\t * In both cases, {@link module:engine/view/rooteditableelement~RootEditableElement#rootName element name} is always transformed to lower\n\t * case.\n\t *\n\t * @param {Element|String} domRoot DOM root element or the tag name of view root element if the DOM element will be\n\t * attached later.\n\t * @param {String} [name='main'] Name of the root.\n\t * @returns {module:engine/view/rooteditableelement~RootEditableElement} The created view root element.\n\t */\n\tcreateRoot( domRoot, name = 'main' ) {\n\t\tconst rootTag = typeof domRoot == 'string' ? domRoot : domRoot.tagName;\n\n\t\tconst viewRoot = new RootEditableElement( rootTag.toLowerCase(), name );\n\t\tviewRoot.document = this;\n\n\t\tthis.roots.set( name, viewRoot );\n\n\t\t// Mark changed nodes in the renderer.\n\t\tviewRoot.on( 'change:children', ( evt, node ) => this.renderer.markToSync( 'children', node ) );\n\t\tviewRoot.on( 'change:attributes', ( evt, node ) => this.renderer.markToSync( 'attributes', node ) );\n\t\tviewRoot.on( 'change:text', ( evt, node ) => this.renderer.markToSync( 'text', node ) );\n\n\t\tif ( this.domConverter.isElement( domRoot ) ) {\n\t\t\tthis.attachDomRoot( domRoot, name );\n\t\t}\n\n\t\treturn viewRoot;\n\t}\n\n\t/**\n\t * Attaches DOM root element to the view element and enable all observers on that element. This method also\n\t * {@link module:engine/view/renderer~Renderer#markToSync mark element} to be synchronized with the view what means that all child\n\t * nodes will be removed and replaced with content of the view root.\n\t *\n\t * Note that {@link module:engine/view/document~Document#createRoot} will call this method automatically if the DOM element is\n\t * passed to it.\n\t *\n\t * @param {Element|String} domRoot DOM root element.\n\t * @param {String} [name='main'] Name of the root.\n\t */\n\tattachDomRoot( domRoot, name = 'main' ) {\n\t\tconst viewRoot = this.getRoot( name );\n\n\t\tthis.domRoots.set( name, domRoot );\n\n\t\tthis.domConverter.bindElements( domRoot, viewRoot );\n\n\t\tthis.renderer.markToSync( 'children', viewRoot );\n\t\tthis.renderer.domDocuments.add( domRoot.ownerDocument );\n\n\t\tfor ( let observer of this._observers.values() ) {\n\t\t\tobserver.observe( domRoot, name );\n\t\t}\n\t}\n\n\t/**\n\t * Gets a {@link module:engine/view/document~Document#roots view root element} with the specified name. If the name is not\n\t * specific \"main\" root is returned.\n\t *\n\t * @param {String} [name='main'] Name of the root.\n\t * @returns {module:engine/view/rooteditableelement~RootEditableElement} The view root element with the specified name.\n\t */\n\tgetRoot( name = 'main' ) {\n\t\treturn this.roots.get( name );\n\t}\n\n\t/**\n\t * Gets DOM root element.\n\t *\n\t * @param {String} [name='main']  Name of the root.\n\t * @returns {Element} DOM root element instance.\n\t */\n\tgetDomRoot( name = 'main' ) {\n\t\treturn this.domRoots.get( name );\n\t}\n\n\t/**\n\t * Renders all changes. In order to avoid triggering the observers (e.g. mutations) all observers are disabled\n\t * before rendering and re-enabled after that.\n\t *\n\t * @fires render\n\t */\n\trender() {\n\t\tthis.fire( 'render' );\n\t}\n\n\t/**\n\t * Focuses document. It will focus {@link module:engine/view/editableelement~EditableElement EditableElement} that is currently having\n\t * selection inside.\n\t */\n\tfocus() {\n\t\tif ( !this.isFocused ) {\n\t\t\tconst editable = this.selection.editableElement;\n\n\t\t\tif ( editable ) {\n\t\t\t\tthis.domConverter.focus( editable );\n\t\t\t\tthis.render();\n\t\t\t} else {\n\t\t\t\t/**\n\t\t\t\t * Before focusing view document, selection should be placed inside one of the view's editables.\n\t\t\t\t * Normally its selection will be converted from model document (which have default selection), but\n\t\t\t\t * when using view document on its own, we need to manually place selection before focusing it.\n\t\t\t\t *\n\t\t\t\t * @error view-focus-no-selection\n\t\t\t\t */\n\t\t\t\tlog.warn( 'view-focus-no-selection: There is no selection in any editable to focus.' );\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Disables all added observers.\n\t */\n\tdisableObservers() {\n\t\tfor ( let observer of this._observers.values() ) {\n\t\t\tobserver.disable();\n\t\t}\n\t}\n\n\t/**\n\t * Enables all added observers.\n\t */\n\tenableObservers() {\n\t\tfor ( let observer of this._observers.values() ) {\n\t\t\tobserver.enable();\n\t\t}\n\t}\n\n\t/**\n\t * Destroys all observers created by view `Document`.\n\t */\n\tdestroy() {\n\t\tfor ( let observer of this._observers.values() ) {\n\t\t\tobserver.destroy();\n\t\t}\n\t}\n}\n\nmix( Document, ObservableMixin );\n\n/**\n * Enum representing type of the change.\n *\n * Possible values:\n *\n * * `children` - for child list changes,\n * * `attributes` - for element attributes changes,\n * * `text` - for text nodes changes.\n *\n * @typedef {String} module:engine/view/document~ChangeType\n */\n\n/**\n * Fired when {@link #render render} method is called. Actual rendering is executed as a listener to\n * this event with default priority. This way other listeners can be used to run code before or after rendering.\n *\n * @event render\n */\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/view/document.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/observer/clickobserver\n */\n\nimport DomEventObserver from './domeventobserver';\n\n/**\n * {@link module:engine/view/document~Document#event:click Click} event observer.\n *\n * Note that this observer is not available by default. To make it available it needs to be added to\n * {@link module:engine/view/document~Document}\n * by a {@link module:engine/view/document~Document#addObserver} method.\n *\n * @extends module:engine/view/observer/domeventobserver~DomEventObserver\n */\nexport default class ClickObserver extends DomEventObserver {\n\tconstructor( document ) {\n\t\tsuper( document );\n\n\t\tthis.domEventType = 'click';\n\t}\n\n\tonDomEvent( domEvent ) {\n\t\tthis.fire( domEvent.type, domEvent );\n\t}\n}\n\n/**\n * Fired when one of the editables has been clicked.\n *\n * Introduced by {@link module:engine/view/observer/clickobserver~ClickObserver}.\n *\n * Note that this event is not available by default. To make it available\n * {@link module:engine/view/observer/clickobserver~ClickObserver} needs to be added\n * to {@link module:engine/view/document~Document} by a {@link module:engine/view/document~Document#addObserver} method.\n *\n * @see module:engine/view/observer/clickobserver~ClickObserver\n * @event module:engine/view/document~Document#event:click\n * @param {module:engine/view/observer/domeventdata~DomEventData} data Event data.\n */\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/view/observer/clickobserver.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/observer/fakeselectionobserver\n */\n\nimport Observer from './observer';\nimport ViewSelection from '../selection';\nimport { keyCodes } from '@ckeditor/ckeditor5-utils/src/keyboard';\nimport debounce from '@ckeditor/ckeditor5-utils/src/lib/lodash/debounce';\n\n/**\n * Fake selection observer class. If view selection is fake it is placed in dummy DOM container. This observer listens\n * on {@link module:engine/view/document~Document#event:keydown keydown} events and handles moving fake view selection to the correct place\n * if arrow keys are pressed.\n * Fires {@link module:engine/view/document~Document#event:selectionChange selectionChange event} simulating natural behaviour of\n * {@link module:engine/view/observer/selectionobserver~SelectionObserver SelectionObserver}.\n *\n * @extends module:engine/view/observer/observer~Observer.Observer\n */\nexport default class FakeSelectionObserver extends Observer {\n\t/**\n\t * Creates new FakeSelectionObserver instance.\n\t *\n\t * @param {module:engine/view/document~Document} document\n\t */\n\tconstructor( document ) {\n\t\tsuper( document );\n\n\t\t/**\n\t\t * Fires debounced event `selectionChangeDone`. It uses `lodash#debounce` method to delay function call.\n\t\t *\n\t\t * @private\n\t\t * @param {Object} data Selection change data.\n\t\t * @method #_fireSelectionChangeDoneDebounced\n\t\t */\n\t\tthis._fireSelectionChangeDoneDebounced = debounce( data => this.document.fire( 'selectionChangeDone', data ), 200 );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tobserve() {\n\t\tconst document = this.document;\n\n\t\tdocument.on( 'keydown', ( eventInfo, data ) => {\n\t\t\tconst selection = document.selection;\n\n\t\t\tif ( selection.isFake && _isArrowKeyCode( data.keyCode ) && this.isEnabled ) {\n\t\t\t\t// Prevents default key down handling - no selection change will occur.\n\t\t\t\tdata.preventDefault();\n\n\t\t\t\tthis._handleSelectionMove( data.keyCode );\n\t\t\t}\n\t\t}, { priority: 'lowest' } );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tdestroy() {\n\t\tsuper.destroy();\n\n\t\tthis._fireSelectionChangeDoneDebounced.cancel();\n\t}\n\n\t/**\n\t * Handles collapsing view selection according to given key code. If left or up key is provided - new selection will be\n\t * collapsed to left. If right or down key is pressed - new selection will be collapsed to right.\n\t *\n\t * This method fires {@link module:engine/view/document~Document#event:selectionChange} and\n\t * {@link module:engine/view/document~Document#event:selectionChangeDone} events imitating behaviour of\n\t * {@link module:engine/view/observer/selectionobserver~SelectionObserver}.\n\t *\n\t * @private\n\t * @param {Number} keyCode\n\t * @fires module:engine/view/document~Document#event:selectionChange\n\t * @fires module:engine/view/document~Document#event:selectionChangeDone\n\t */\n\t_handleSelectionMove( keyCode ) {\n\t\tconst selection = this.document.selection;\n\t\tconst newSelection = ViewSelection.createFromSelection( selection );\n\t\tnewSelection.setFake( false );\n\n\t\t// Left or up arrow pressed - move selection to start.\n\t\tif ( keyCode == keyCodes.arrowleft || keyCode == keyCodes.arrowup ) {\n\t\t\tnewSelection.collapseToStart();\n\t\t}\n\n\t\t// Right or down arrow pressed - move selection to end.\n\t\tif ( keyCode == keyCodes.arrowright || keyCode == keyCodes.arrowdown ) {\n\t\t\tnewSelection.collapseToEnd();\n\t\t}\n\n\t\tconst data = {\n\t\t\toldSelection: selection,\n\t\t\tnewSelection: newSelection,\n\t\t\tdomSelection: null\n\t\t};\n\n\t\t// Fire dummy selection change event.\n\t\tthis.document.fire( 'selectionChange', data );\n\n\t\t// Call` #_fireSelectionChangeDoneDebounced` every time when `selectionChange` event is fired.\n\t\t// This function is debounced what means that `selectionChangeDone` event will be fired only when\n\t\t// defined int the function time will elapse since the last time the function was called.\n\t\t// So `selectionChangeDone` will be fired when selection will stop changing.\n\t\tthis._fireSelectionChangeDoneDebounced( data );\n\t}\n}\n\n// Checks if one of the arrow keys is pressed.\n//\n// @private\n// @param {Number} keyCode\n// @returns {Boolean}\nfunction _isArrowKeyCode( keyCode ) {\n\treturn keyCode == keyCodes.arrowright ||\n\t\tkeyCode == keyCodes.arrowleft ||\n\t\tkeyCode == keyCodes.arrowup ||\n\t\tkeyCode == keyCodes.arrowdown;\n}\n\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/view/observer/fakeselectionobserver.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/observer/focusobserver\n */\n\nimport DomEventObserver from './domeventobserver';\n\n/**\n * {@link module:engine/view/document~Document#event:focus Focus}\n * and {@link module:engine/view/document~Document#event:blur blur} events observer.\n * Focus observer handle also {@link module:engine/view/rooteditableelement~RootEditableElement#isFocused isFocused} property of the\n * {@link module:engine/view/rooteditableelement~RootEditableElement root elements}.\n *\n * Note that this observer is attached by the {@link module:engine/view/document~Document} and is available by default.\n *\n * @extends module:engine/view/observer/domeventobserver~DomEventObserver\n */\nexport default class FocusObserver extends DomEventObserver {\n\tconstructor( document ) {\n\t\tsuper( document );\n\n\t\tthis.domEventType = [ 'focus', 'blur' ];\n\t\tthis.useCapture = true;\n\n\t\tdocument.on( 'focus', () => {\n\t\t\tdocument.isFocused = true;\n\t\t} );\n\n\t\tdocument.on( 'blur', ( evt, data ) => {\n\t\t\tconst selectedEditable = document.selection.editableElement;\n\n\t\t\tif ( selectedEditable === null || selectedEditable === data.target ) {\n\t\t\t\tdocument.isFocused = false;\n\n\t\t\t\t// Re-render the document to update view elements.\n\t\t\t\tdocument.render();\n\t\t\t}\n\t\t} );\n\t}\n\n\tonDomEvent( domEvent ) {\n\t\tthis.fire( domEvent.type, domEvent );\n\t}\n}\n\n/**\n * Fired when one of the editables gets focus.\n *\n * Introduced by {@link module:engine/view/observer/focusobserver~FocusObserver}.\n *\n * Note that because {@link module:engine/view/observer/focusobserver~FocusObserver} is attached by the\n * {@link module:engine/view/document~Document}\n * this event is available by default.\n *\n * @see module:engine/view/observer/focusobserver~FocusObserver\n * @event module:engine/view/document~Document#event:focus\n * @param {module:engine/view/observer/domeventdata~DomEventData} data Event data.\n */\n\n/**\n * Fired when one of the editables loses focus.\n *\n * Introduced by {@link module:engine/view/observer/focusobserver~FocusObserver}.\n *\n * Note that because {@link module:engine/view/observer/focusobserver~FocusObserver} is attached by the\n * {@link module:engine/view/document~Document}\n * this event is available by default.\n *\n * @see module:engine/view/observer/focusobserver~FocusObserver\n * @event module:engine/view/document~Document#event:blur\n * @param {module:engine/view/observer/domeventdata~DomEventData} data Event data.\n */\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/view/observer/focusobserver.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/observer/keyobserver\n */\n\nimport DomEventObserver from './domeventobserver';\nimport { getCode } from '@ckeditor/ckeditor5-utils/src/keyboard';\n\n/**\n * {@link module:engine/view/document~Document#event:keydown Key down} event observer.\n *\n * Note that this observer is attached by the {@link module:engine/view/document~Document} and is available by default.\n *\n * @extends module:engine/view/observer/domeventobserver~DomEventObserver\n */\nexport default class KeyObserver extends DomEventObserver {\n\tconstructor( document ) {\n\t\tsuper( document );\n\n\t\tthis.domEventType = 'keydown';\n\t}\n\n\tonDomEvent( domEvt ) {\n\t\tthis.fire( 'keydown', domEvt, {\n\t\t\tkeyCode: domEvt.keyCode,\n\n\t\t\taltKey: domEvt.altKey,\n\t\t\tctrlKey: domEvt.ctrlKey || domEvt.metaKey,\n\t\t\tshiftKey: domEvt.shiftKey,\n\n\t\t\tget keystroke() {\n\t\t\t\treturn getCode( this );\n\t\t\t}\n\t\t} );\n\t}\n}\n\n/**\n * Fired when a key has been pressed.\n *\n * Introduced by {@link module:engine/view/observer/keyobserver~KeyObserver}.\n *\n * Note that because {@link module:engine/view/observer/keyobserver~KeyObserver} is attached by the\n * {@link module:engine/view/document~Document}\n * this event is available by default.\n *\n * @see module:engine/view/observer/keyobserver~KeyObserver\n * @event module:engine/view/document~Document#event:keydown\n * @param {module:engine/view/observer/keyobserver~KeyEventData} keyEventData\n */\n\n/**\n * The value of the {@link module:engine/view/document~Document#event:keydown} event.\n *\n * @class module:engine/view/observer/keyobserver~KeyEventData\n * @extends module:engine/view/observer/domeventdata~DomEventData\n * @implements module:utils/keyboard~KeystrokeInfo\n */\n\n/**\n * Code of the whole keystroke. See {@link module:utils/keyboard~getCode}.\n *\n * @readonly\n * @member {Number} module:engine/view/observer/keyobserver~KeyEventData#keystroke\n */\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/view/observer/keyobserver.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/observer/mouseobserver\n */\n\nimport DomEventObserver from './domeventobserver';\n\n/**\n * Mouse events observer.\n *\n * Note that this observer is not available by default. To make it available it needs to be added to\n * {@link module:engine/view/document~Document}\n * by {@link module:engine/view/document~Document#addObserver} method.\n *\n * @extends module:engine/view/observer/domeventobserver~DomEventObserver\n */\nexport default class MouseObserver extends DomEventObserver {\n\tconstructor( document ) {\n\t\tsuper( document );\n\n\t\tthis.domEventType = 'mousedown';\n\t}\n\n\tonDomEvent( domEvent ) {\n\t\tthis.fire( domEvent.type, domEvent );\n\t}\n}\n\n/**\n * Fired when mouse button is pressed down on one of the editables.\n *\n * Introduced by {@link module:engine/view/observer/mouseobserver~MouseObserver}.\n *\n * Note that this event is not available by default. To make it available {@link module:engine/view/observer/mouseobserver~MouseObserver}\n * needs to be added to {@link module:engine/view/document~Document} by a {@link module:engine/view/document~Document#addObserver} method.\n *\n * @see module:engine/view/observer/mouseobserver~MouseObserver\n * @event module:engine/view/document~Document#event:mousedown\n * @param {module:engine/view/observer/domeventdata~DomEventData} data Event data.\n */\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/view/observer/mouseobserver.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/observer/selectionobserver\n */\n\n/* global setInterval, clearInterval */\n\nimport Observer from './observer';\nimport MutationObserver from './mutationobserver';\nimport log from '@ckeditor/ckeditor5-utils/src/log';\nimport debounce from '@ckeditor/ckeditor5-utils/src/lib/lodash/debounce';\n\n/**\n * Selection observer class observes selection changes in the document. If selection changes on the document this\n * observer checks if there are any mutations and if DOM selection is different than the\n * {@link module:engine/view/document~Document#selection view selection}. Selection observer fires\n * {@link module:engine/view/document~Document#event:selectionChange} event only if selection change was the only change in the document\n * and DOM selection is different then the view selection.\n *\n * Note that this observer is attached by the {@link module:engine/view/document~Document} and is available by default.\n *\n * @see module:engine/view/observer/mutationobserver~MutationObserver\n * @extends module:engine/view/observer/observer~Observer\n */\nexport default class SelectionObserver extends Observer {\n\tconstructor( document ) {\n\t\tsuper( document );\n\n\t\t/**\n\t\t * Instance of the mutation observer. Selection observer calls\n\t\t * {@link module:engine/view/observer/mutationobserver~MutationObserver#flush} to ensure that the mutations will be handled before the\n\t\t * {@link module:engine/view/document~Document#event:selectionChange} event is fired.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/view/observer/mutationobserver~MutationObserver}\n\t\t * module:engine/view/observer/selectionobserver~SelectionObserver#mutationObserver\n\t\t */\n\t\tthis.mutationObserver = document.getObserver( MutationObserver );\n\n\t\t/**\n\t\t * Reference to the {@link module:engine/view/document~Document} object.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/view/document~Document} module:engine/view/observer/selectionobserver~SelectionObserver#document\n\t\t */\n\t\tthis.document = document;\n\n\t\t/**\n\t\t * Reference to the view {@link module:engine/view/selection~Selection} object used to compare new selection with it.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/view/selection~Selection} module:engine/view/observer/selectionobserver~SelectionObserver#selection\n\t\t */\n\t\tthis.selection = document.selection;\n\n\t\t/**\n\t\t * Reference to the {@link module:engine/view/document~Document#domConverter}.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/view/domconverter~DomConverter} module:engine/view/observer/selectionobserver~SelectionObserver#domConverter\n\t\t */\n\t\tthis.domConverter = document.domConverter;\n\n\t\t/**\n\t\t * Set of documents which have added \"selectionchange\" listener to avoid adding listener twice to the same\n\t\t * document.\n\t\t *\n\t\t * @private\n\t\t * @member {WeakSet.<Document>} module:engine/view/observer/selectionobserver~SelectionObserver#_documents\n\t\t */\n\t\tthis._documents = new WeakSet();\n\n\t\t/**\n\t\t * Fires debounced event `selectionChangeDone`. It uses `lodash#debounce` method to delay function call.\n\t\t *\n\t\t * @private\n\t\t * @param {Object} data Selection change data.\n\t\t * @method #_fireSelectionChangeDoneDebounced\n\t\t */\n\t\tthis._fireSelectionChangeDoneDebounced = debounce( data => this.document.fire( 'selectionChangeDone', data ), 200 );\n\n\t\tthis._clearInfiniteLoopInterval = setInterval( () => this._clearInfiniteLoop(), 2000 );\n\n\t\t/**\n\t\t * Private property to store the last selection, to check if the code does not enter infinite loop.\n\t\t *\n\t\t * @private\n\t\t * @member {module:engine/view/selection~Selection} module:engine/view/observer/selectionobserver~SelectionObserver#_lastSelection\n\t\t */\n\n\t\t/**\n\t\t * Private property to store the last but one selection, to check if the code does not enter infinite loop.\n\t\t *\n\t\t * @private\n\t\t * @member {module:engine/view/selection~Selection} module:engine/view/observer/selectionobserver~SelectionObserver#_lastButOneSelection\n\t\t */\n\n\t\t/**\n\t\t * Private property to check if the code does not enter infinite loop.\n\t\t *\n\t\t * @private\n\t\t * @member {Number} module:engine/view/observer/selectionobserver~SelectionObserver#_loopbackCounter\n\t\t */\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tobserve( domElement ) {\n\t\tconst domDocument = domElement.ownerDocument;\n\n\t\t// Add listener once per each document.\n\t\tif ( this._documents.has( domDocument ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\tthis.listenTo( domDocument, 'selectionchange', () => {\n\t\t\tthis._handleSelectionChange( domDocument );\n\t\t} );\n\n\t\tthis._documents.add( domDocument );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tdestroy() {\n\t\tsuper.destroy();\n\n\t\tclearInterval( this._clearInfiniteLoopInterval );\n\t\tthis._fireSelectionChangeDoneDebounced.cancel();\n\t}\n\n\t/**\n\t * Selection change listener. {@link module:engine/view/observer/mutationobserver~MutationObserver#flush Flush} mutations, check if\n\t * selection changes and fires {@link module:engine/view/document~Document#event:selectionChange} event on every change\n\t * and {@link module:engine/view/document~Document#event:selectionChangeDone} when selection stop changing.\n\t *\n\t * @private\n\t * @param {Document} domDocument DOM document.\n\t */\n\t_handleSelectionChange( domDocument ) {\n\t\tif ( !this.isEnabled || !this.document.isFocused ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Ensure the mutation event will be before selection event on all browsers.\n\t\tthis.mutationObserver.flush();\n\n\t\t// If there were mutations then the view will be re-rendered by the mutation observer and selection\n\t\t// will be updated, so selections will equal and event will not be fired, as expected.\n\t\tconst domSelection = domDocument.defaultView.getSelection();\n\t\tconst newViewSelection = this.domConverter.domSelectionToView( domSelection );\n\n\t\tif ( this.selection.isEqual( newViewSelection ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Ensure we are not in the infinite loop (#400).\n\t\tif ( this._isInfiniteLoop( newViewSelection ) ) {\n\t\t\t/**\n\t\t\t * Selection change observer detected an infinite rendering loop.\n\t\t\t * Most probably you try to put the selection in the position which is not allowed\n\t\t\t * by the browser and browser fixes it automatically what causes `selectionchange` event on\n\t\t\t * which a loopback through a model tries to re-render the wrong selection and again.\n\t\t\t *\n\t\t\t * @error selectionchange-infinite-loop\n\t\t\t */\n\t\t\tlog.warn( 'selectionchange-infinite-loop: Selection change observer detected an infinite rendering loop.' );\n\n\t\t\treturn;\n\t\t}\n\n\t\tconst data = {\n\t\t\toldSelection: this.selection,\n\t\t\tnewSelection: newViewSelection,\n\t\t\tdomSelection: domSelection\n\t\t};\n\n\t\t// Should be fired only when selection change was the only document change.\n\t\tthis.document.fire( 'selectionChange', data );\n\n\t\t// Call` #_fireSelectionChangeDoneDebounced` every time when `selectionChange` event is fired.\n\t\t// This function is debounced what means that `selectionChangeDone` event will be fired only when\n\t\t// defined int the function time will elapse since the last time the function was called.\n\t\t// So `selectionChangeDone` will be fired when selection will stop changing.\n\t\tthis._fireSelectionChangeDoneDebounced( data );\n\t}\n\n\t/**\n\t * Checks if selection rendering entered an infinite loop.\n\t *\n\t * See https://github.com/ckeditor/ckeditor5-engine/issues/400.\n\t *\n\t * @private\n\t * @param {module:engine/view/selection~Selection} newSelection DOM selection converted to view.\n\t * @returns {Boolean} True is the same selection repeat more then 10 times.\n\t */\n\t_isInfiniteLoop( newSelection ) {\n\t\t// If the position is the same a the last one or the last but one we increment the counter.\n\t\t// We need to check last two selections because the browser will first fire a selectionchange event\n\t\t// for an incorrect selection and then for a corrected one.\n\t\tif ( this._lastSelection && this._lastButOneSelection &&\n\t\t\t( newSelection.isEqual( this._lastSelection ) || newSelection.isEqual( this._lastButOneSelection ) ) ) {\n\t\t\tthis._loopbackCounter++;\n\t\t} else {\n\t\t\tthis._lastButOneSelection = this._lastSelection;\n\t\t\tthis._lastSelection = newSelection;\n\t\t\tthis._loopbackCounter = 0;\n\t\t}\n\n\t\t// This counter is reset every 2 seconds. 50 selection changes in 2 seconds is enough high number\n\t\t// to be very difficult (impossible) to achieve using just keyboard keys (during normal editor use).\n\t\tif ( this._loopbackCounter > 50 ) {\n\t\t\treturn true;\n\t\t}\n\n\t\treturn false;\n\t}\n\n\t/**\n\t * Clears `SelectionObserver` internal properties connected with preventing infinite loop.\n\t *\n\t * @protected\n\t */\n\t_clearInfiniteLoop() {\n\t\tthis._lastSelection = null;\n\t\tthis._lastButOneSelection = null;\n\t\tthis._loopbackCounter = 0;\n\t}\n}\n\n/**\n * Fired when selection has changed. This event is fired only when the selection change was the only change that happened\n * in the document, and old selection is different then the new selection.\n *\n * Introduced by {@link module:engine/view/observer/selectionobserver~SelectionObserver}.\n *\n * Note that because {@link module:engine/view/observer/selectionobserver~SelectionObserver} is attached by the\n * {@link module:engine/view/document~Document}\n * this event is available by default.\n *\n * @see module:engine/view/observer/selectionobserver~SelectionObserver\n * @event module:engine/view/document~Document#event:selectionChange\n * @param {Object} data\n * @param {module:engine/view/selection~Selection} data.oldSelection Old View selection which is\n * {@link module:engine/view/document~Document#selection}.\n * @param {module:engine/view/selection~Selection} data.newSelection New View selection which is converted DOM selection.\n * @param {Selection} data.domSelection Native DOM selection.\n */\n\n/**\n * Fired when selection stops changing.\n *\n * Introduced by {@link module:engine/view/observer/selectionobserver~SelectionObserver}.\n *\n * Note that because {@link module:engine/view/observer/selectionobserver~SelectionObserver} is attached by the\n * {@link module:engine/view/document~Document}\n * this event is available by default.\n *\n * @see module:engine/view/observer/selectionobserver~SelectionObserver\n * @event module:engine/view/document~Document#event:selectionChangeDone\n * @param {Object} data\n * @param {module:engine/view/selection~Selection} data.oldSelection Old View selection which is\n * {@link module:engine/view/document~Document#selection}.\n * @param {module:engine/view/selection~Selection} data.newSelection New View selection which is converted DOM selection.\n * @param {Selection} data.domSelection Native DOM selection.\n */\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/view/observer/selectionobserver.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/renderer\n */\n\nimport ViewText from './text';\nimport ViewPosition from './position';\nimport { INLINE_FILLER, INLINE_FILLER_LENGTH, startsWithFiller, isInlineFiller, isBlockFiller } from './filler';\n\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\nimport diff from '@ckeditor/ckeditor5-utils/src/diff';\nimport insertAt from '@ckeditor/ckeditor5-utils/src/dom/insertat';\nimport remove from '@ckeditor/ckeditor5-utils/src/dom/remove';\nimport ObservableMixin from '@ckeditor/ckeditor5-utils/src/observablemixin';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/* global Range */\n\n/**\n * Renderer updates DOM structure and selection, to make them a reflection of the view structure and selection.\n *\n * View nodes which may need to be rendered needs to be {@link module:engine/view/renderer~Renderer#markToSync marked}.\n * Then, on {@link module:engine/view/renderer~Renderer#render render}, renderer compares the view nodes with the DOM nodes\n * in order to check which ones really need to be refreshed. Finally, it creates DOM nodes from these view nodes,\n * {@link module:engine/view/domconverter~DomConverter#bindElements binds} them and inserts into the DOM tree.\n *\n * Every time {@link module:engine/view/renderer~Renderer#render render} is called, renderer additionally checks if\n * {@link module:engine/view/renderer~Renderer#selection selection} needs update and updates it if so.\n *\n * Renderer uses {@link module:engine/view/domconverter~DomConverter} to transform and bind nodes.\n */\nexport default class Renderer {\n\t/**\n\t * Creates a renderer instance.\n\t *\n\t * @param {module:engine/view/domconverter~DomConverter} domConverter Converter instance.\n\t * @param {module:engine/view/selection~Selection} selection View selection.\n\t */\n\tconstructor( domConverter, selection ) {\n\t\t/**\n\t\t * Set of DOM Documents instances.\n\t\t *\n\t\t * @member {Set.<Document>}\n\t\t */\n\t\tthis.domDocuments = new Set();\n\n\t\t/**\n\t\t * Converter instance.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/view/domconverter~DomConverter}\n\t\t */\n\t\tthis.domConverter = domConverter;\n\n\t\t/**\n\t\t * Set of nodes which attributes changed and may need to be rendered.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Set.<module:engine/view/node~Node>}\n\t\t */\n\t\tthis.markedAttributes = new Set();\n\n\t\t/**\n\t\t * Set of elements which child lists changed and may need to be rendered.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Set.<module:engine/view/node~Node>}\n\t\t */\n\t\tthis.markedChildren = new Set();\n\n\t\t/**\n\t\t * Set of text nodes which text data changed and may need to be rendered.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Set.<module:engine/view/node~Node>}\n\t\t */\n\t\tthis.markedTexts = new Set();\n\n\t\t/**\n\t\t * View selection. Renderer updates DOM Selection to make it match this one.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/view/selection~Selection}\n\t\t */\n\t\tthis.selection = selection;\n\n\t\t/**\n\t\t * The text node in which the inline filler was rendered.\n\t\t *\n\t\t * @private\n\t\t * @member {Text}\n\t\t */\n\t\tthis._inlineFiller = null;\n\n\t\t/**\n\t\t * Indicates if view document is focused and selection can be rendered. Selection will not be rendered if\n\t\t * this is set to `false`.\n\t\t *\n\t\t * @member {Boolean}\n\t\t */\n\t\tthis.isFocused = false;\n\n\t\t/**\n\t\t * DOM element containing fake selection.\n\t\t *\n\t\t * @private\n\t\t * @type {null|HTMLElement}\n\t\t */\n\t\tthis._fakeSelectionContainer = null;\n\t}\n\n\t/**\n\t * Mark node to be synchronized.\n\t *\n\t * Note that only view nodes which parents have corresponding DOM elements need to be marked to be synchronized.\n\t *\n\t * @see #markedAttributes\n\t * @see #markedChildren\n\t * @see #markedTexts\n\t *\n\t * @param {module:engine/view/document~ChangeType} type Type of the change.\n\t * @param {module:engine/view/node~Node} node Node to be marked.\n\t */\n\tmarkToSync( type, node ) {\n\t\tif ( type === 'text' ) {\n\t\t\tif ( this.domConverter.getCorrespondingDom( node.parent ) ) {\n\t\t\t\tthis.markedTexts.add( node );\n\t\t\t}\n\t\t} else {\n\t\t\t// If the node has no DOM element it is not rendered yet,\n\t\t\t// its children/attributes do not need to be marked to be sync.\n\t\t\tif ( !this.domConverter.getCorrespondingDom( node ) ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tif ( type === 'attributes' ) {\n\t\t\t\tthis.markedAttributes.add( node );\n\t\t\t} else if ( type === 'children' ) {\n\t\t\t\tthis.markedChildren.add( node );\n\t\t\t} else {\n\t\t\t\t/**\n\t\t\t\t * Unknown type passed to Renderer.markToSync.\n\t\t\t\t *\n\t\t\t\t * @error renderer-unknown-type\n\t\t\t\t */\n\t\t\t\tthrow new CKEditorError( 'view-renderer-unknown-type: Unknown type passed to Renderer.markToSync.' );\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Render method checks {@link #markedAttributes},\n\t * {@link #markedChildren} and {@link #markedTexts} and updates all\n\t * nodes which need to be updated. Then it clears all three sets. Also, every time render is called it compares and\n\t * if needed updates the selection.\n\t *\n\t * Renderer tries not to break text composition (e.g. IME) and x-index of the selection,\n\t * so it does as little as it is needed to update the DOM.\n\t *\n\t * For attributes it adds new attributes to DOM elements, updates values and removes\n\t * attributes which do not exist in the view element.\n\t *\n\t * For text nodes it updates the text string if it is different. Note that if parent element is marked as an element\n\t * which changed child list, text node update will not be done, because it may not be possible do find a\n\t * {@link module:engine/view/domconverter~DomConverter#getCorrespondingDomText corresponding DOM text}. The change will be handled\n\t * in the parent element.\n\t *\n\t * For elements, which child lists have changed, it calculates a {@link module:utils/diff~diff} and adds or removes children which have\n\t * changed.\n\t *\n\t * Rendering also handles {@link module:engine/view/filler fillers}. Especially, it checks if the inline filler is needed\n\t * at selection position and adds or removes it. To prevent breaking text composition inline filler will not be\n\t * removed as long selection is in the text node which needed it at first.\n\t */\n\trender() {\n\t\tlet inlineFillerPosition;\n\n\t\t// There was inline filler rendered in the DOM but it's not\n\t\t// at the selection position any more, so we can remove it\n\t\t// (cause even if it's needed, it must be placed in another location).\n\t\tif ( this._inlineFiller && !this._isSelectionInInlineFiller() ) {\n\t\t\tthis._removeInlineFiller();\n\t\t}\n\n\t\t// If we've got the filler, let's try to guess its position in the view.\n\t\tif ( this._inlineFiller ) {\n\t\t\tinlineFillerPosition = this._getInlineFillerPosition();\n\t\t}\n\t\t// Othewise, if it's needed, create it at the selection position.\n\t\telse if ( this._needsInlineFillerAtSelection() ) {\n\t\t\tinlineFillerPosition = this.selection.getFirstPosition();\n\n\t\t\t// Do not use `markToSync` so it will be added even if the parent is already added.\n\t\t\tthis.markedChildren.add( inlineFillerPosition.parent );\n\t\t}\n\n\t\tfor ( let node of this.markedTexts ) {\n\t\t\tif ( !this.markedChildren.has( node.parent ) && this.domConverter.getCorrespondingDom( node.parent ) ) {\n\t\t\t\tthis._updateText( node, { inlineFillerPosition } );\n\t\t\t}\n\t\t}\n\n\t\tfor ( let element of this.markedAttributes ) {\n\t\t\tthis._updateAttrs( element );\n\t\t}\n\n\t\tfor ( let element of this.markedChildren ) {\n\t\t\tthis._updateChildren( element, { inlineFillerPosition } );\n\t\t}\n\n\t\tthis._updateSelection();\n\t\tthis._updateFocus();\n\n\t\tthis.markedTexts.clear();\n\t\tthis.markedAttributes.clear();\n\t\tthis.markedChildren.clear();\n\n\t\t// Remember the filler by its node.\n\t\tthis._inlineFiller = this._getInlineFillerNode( inlineFillerPosition );\n\t}\n\n\t/**\n\t * Gets the text node in which the inline filler is kept.\n\t *\n\t * @private\n\t * @param {module:engine/view/position~Position} fillerPosition The position on which the filler is needed in the view.\n\t * @returns {Text} The text node with the filler.\n\t */\n\t_getInlineFillerNode( fillerPosition ) {\n\t\tif ( !fillerPosition ) {\n\t\t\tthis._inlineFiller = null;\n\n\t\t\treturn;\n\t\t}\n\n\t\tconst domPosition = this.domConverter.viewPositionToDom( fillerPosition );\n\n\t\t/* istanbul ignore if */\n\t\tif ( !domPosition || !startsWithFiller( domPosition.parent ) ) {\n\t\t\t/**\n\t\t\t * Cannot find filler node by its position.\n\t\t\t *\n\t\t\t * @error view-renderer-cannot-find-filler\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'view-renderer-cannot-find-filler: Cannot find filler node by its position.' );\n\t\t}\n\n\t\treturn domPosition.parent;\n\t}\n\n\t/**\n\t * Gets the position of the inline filler based on the current selection.\n\t * Here, we assume that we know that the filler is needed and\n\t * {@link #_isSelectionInInlineFiller is at the selection position}, and, since it's needed,\n\t * it's somewhere at the selection postion.\n\t *\n\t * Note: we cannot restore the filler position based on the filler's DOM text node, because\n\t * when this method is called (before rendering) the bindings will often be broken. View to DOM\n\t * bindings are only dependable after rendering.\n\t *\n\t * @private\n\t * @returns {module:engine/view/position~Position}\n\t */\n\t_getInlineFillerPosition() {\n\t\tconst firstPos = this.selection.getFirstPosition();\n\n\t\tif ( firstPos.parent.is( 'text' ) ) {\n\t\t\treturn ViewPosition.createBefore( this.selection.getFirstPosition().parent );\n\t\t} else {\n\t\t\treturn firstPos;\n\t\t}\n\t}\n\n\t/**\n\t * Returns `true` if the selection hasn't left the inline filler's text node.\n\t * If it is `true` it means that the filler had been added for a reason and the selection does not\n\t * left the filler's text node. E.g. the user can be in the middle of a composition so it should not be touched.\n\t *\n\t * @private\n\t * @returns {Boolean} True if the inline filler and selection are in the same place.\n\t */\n\t_isSelectionInInlineFiller() {\n\t\tif ( this.selection.rangeCount != 1 || !this.selection.isCollapsed ) {\n\t\t\treturn false;\n\t\t}\n\n\t\t// Note, we can't check if selection's position equals position of the\n\t\t// this._inlineFiller node, because of #663. We may not be able to calculate\n\t\t// the filler's position in the view at this stage.\n\t\t// Instead, we check it the other way – whether selection is anchored in\n\t\t// that text node or next to it.\n\n\t\t// Possible options are:\n\t\t// \"FILLER{}\"\n\t\t// \"FILLERadded-text{}\"\n\t\tconst selectionPosition = this.selection.getFirstPosition();\n\t\tconst position = this.domConverter.viewPositionToDom( selectionPosition );\n\n\t\tif ( position && this.domConverter.isText( position.parent ) && startsWithFiller( position.parent ) ) {\n\t\t\treturn true;\n\t\t}\n\n\t\treturn false;\n\t}\n\n\t/**\n\t * Removes the inline filler.\n\t *\n\t * @private\n\t */\n\t_removeInlineFiller() {\n\t\tconst domFillerNode = this._inlineFiller;\n\n\t\t// Something weird happened and the stored node doesn't contain the filler's text.\n\t\tif ( !startsWithFiller( domFillerNode ) ) {\n\t\t\t/**\n\t\t\t * The inline filler node was lost. Most likely, something overwrote the filler text node\n\t\t\t * in the DOM.\n\t\t\t *\n\t\t\t * @error view-renderer-filler-was-lost\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'view-renderer-filler-was-lost: The inline filler node was lost.' );\n\t\t}\n\n\t\tif ( isInlineFiller( domFillerNode ) ) {\n\t\t\tdomFillerNode.parentNode.removeChild( domFillerNode );\n\t\t} else {\n\t\t\tdomFillerNode.data = domFillerNode.data.substr( INLINE_FILLER_LENGTH );\n\t\t}\n\n\t\tthis._inlineFiller = null;\n\t}\n\n\t/**\n\t * Checks if the inline {@link module:engine/view/filler filler} should be added.\n\t *\n\t * @private\n\t * @returns {Boolean} True if the inline fillers should be added.\n\t */\n\t_needsInlineFillerAtSelection() {\n\t\tif ( this.selection.rangeCount != 1 || !this.selection.isCollapsed ) {\n\t\t\treturn false;\n\t\t}\n\n\t\tconst selectionPosition = this.selection.getFirstPosition();\n\t\tconst selectionParent = selectionPosition.parent;\n\t\tconst selectionOffset = selectionPosition.offset;\n\n\t\t// If there is no DOM root we do not care about fillers.\n\t\tif ( !this.domConverter.getCorrespondingDomElement( selectionParent.root ) ) {\n\t\t\treturn false;\n\t\t}\n\n\t\tif ( !( selectionParent.is( 'element' ) ) ) {\n\t\t\treturn false;\n\t\t}\n\n\t\t// We have block filler, we do not need inline one.\n\t\tif ( selectionOffset === selectionParent.getFillerOffset() ) {\n\t\t\treturn false;\n\t\t}\n\n\t\tconst nodeBefore = selectionPosition.nodeBefore;\n\t\tconst nodeAfter = selectionPosition.nodeAfter;\n\n\t\tif ( nodeBefore instanceof ViewText || nodeAfter instanceof ViewText ) {\n\t\t\treturn false;\n\t\t}\n\n\t\treturn true;\n\t}\n\n\t/**\n\t * Checks if text needs to be updated and possibly updates it.\n\t *\n\t * @private\n\t * @param {module:engine/view/text~Text} viewText View text to update.\n\t * @param {Object} options\n\t * @param {module:engine/view/position~Position} options.inlineFillerPosition The position on which the inline\n\t * filler should be rendered.\n\t */\n\t_updateText( viewText, options ) {\n\t\tconst domText = this.domConverter.getCorrespondingDom( viewText );\n\t\tconst newDomText = this.domConverter.viewToDom( viewText, domText.ownerDocument );\n\n\t\tconst actualText = domText.data;\n\t\tlet expectedText = newDomText.data;\n\n\t\tconst filler = options.inlineFillerPosition;\n\n\t\tif ( filler && filler.parent == viewText.parent && filler.offset == viewText.index ) {\n\t\t\texpectedText = INLINE_FILLER + expectedText;\n\t\t}\n\n\t\tif ( actualText != expectedText ) {\n\t\t\tdomText.data = expectedText;\n\t\t}\n\t}\n\n\t/**\n\t * Checks if attributes list needs to be updated and possibly updates it.\n\t *\n\t * @private\n\t * @param {module:engine/view/element~Element} viewElement View element to update.\n\t */\n\t_updateAttrs( viewElement ) {\n\t\tconst domElement = this.domConverter.getCorrespondingDom( viewElement );\n\t\tconst domAttrKeys = Array.from( domElement.attributes ).map( attr => attr.name );\n\t\tconst viewAttrKeys = viewElement.getAttributeKeys();\n\n\t\t// Add or overwrite attributes.\n\t\tfor ( let key of viewAttrKeys ) {\n\t\t\tdomElement.setAttribute( key, viewElement.getAttribute( key ) );\n\t\t}\n\n\t\t// Remove from DOM attributes which do not exists in the view.\n\t\tfor ( let key of domAttrKeys ) {\n\t\t\tif ( !viewElement.hasAttribute( key ) ) {\n\t\t\t\tdomElement.removeAttribute( key );\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Checks if elements child list needs to be updated and possibly updates it.\n\t *\n\t * @private\n\t * @param {module:engine/view/element~Element} viewElement View element to update.\n\t * @param {Object} options\n\t * @param {module:engine/view/position~Position} options.inlineFillerPosition The position on which the inline\n\t * filler should be rendered.\n\t */\n\t_updateChildren( viewElement, options ) {\n\t\tconst domConverter = this.domConverter;\n\t\tconst domElement = domConverter.getCorrespondingDom( viewElement );\n\t\tconst domDocument = domElement.ownerDocument;\n\n\t\tconst filler = options.inlineFillerPosition;\n\n\t\tconst actualDomChildren = domElement.childNodes;\n\t\tconst expectedDomChildren = Array.from( domConverter.viewChildrenToDom( viewElement, domDocument, { bind: true } ) );\n\n\t\tif ( filler && filler.parent == viewElement ) {\n\t\t\tconst expectedNodeAfterFiller = expectedDomChildren[ filler.offset ];\n\n\t\t\tif ( this.domConverter.isText( expectedNodeAfterFiller ) ) {\n\t\t\t\texpectedNodeAfterFiller.data = INLINE_FILLER + expectedNodeAfterFiller.data;\n\t\t\t} else {\n\t\t\t\texpectedDomChildren.splice( filler.offset, 0, domDocument.createTextNode( INLINE_FILLER ) );\n\t\t\t}\n\t\t}\n\n\t\tconst actions = diff( actualDomChildren, expectedDomChildren, sameNodes );\n\n\t\tlet i = 0;\n\n\t\tfor ( let action of actions ) {\n\t\t\tif ( action === 'insert' ) {\n\t\t\t\tinsertAt( domElement, i, expectedDomChildren[ i ] );\n\t\t\t\ti++;\n\t\t\t} else if ( action === 'delete' ) {\n\t\t\t\tremove( actualDomChildren[ i ] );\n\t\t\t} else { // 'equal'\n\t\t\t\ti++;\n\t\t\t}\n\t\t}\n\n\t\tfunction sameNodes( actualDomChild, expectedDomChild ) {\n\t\t\t// Elements.\n\t\t\tif ( actualDomChild === expectedDomChild ) {\n\t\t\t\treturn true;\n\t\t\t}\n\t\t\t// Texts.\n\t\t\telse if ( domConverter.isText( actualDomChild ) && domConverter.isText( expectedDomChild ) ) {\n\t\t\t\treturn actualDomChild.data === expectedDomChild.data;\n\t\t\t}\n\t\t\t// Block fillers.\n\t\t\telse if ( isBlockFiller( actualDomChild, domConverter.blockFiller ) &&\n\t\t\t\tisBlockFiller( expectedDomChild, domConverter.blockFiller ) ) {\n\t\t\t\treturn true;\n\t\t\t}\n\n\t\t\t// Not matching types.\n\t\t\treturn false;\n\t\t}\n\t}\n\n\t/**\n\t * Checks if selection needs to be updated and possibly updates it.\n\t *\n\t * @private\n\t */\n\t_updateSelection() {\n\t\t// If there is no selection - remove DOM and fake selections.\n\t\tif ( this.selection.rangeCount === 0 ) {\n\t\t\tthis._removeDomSelection();\n\t\t\tthis._removeFakeSelection();\n\n\t\t\treturn;\n\t\t}\n\n\t\tconst domRoot = this.domConverter.getCorrespondingDomElement( this.selection.editableElement );\n\n\t\t// Do nothing if there is no focus, or there is no DOM element corresponding to selection's editable element.\n\t\tif ( !this.isFocused || !domRoot ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Render selection.\n\t\tif ( this.selection.isFake ) {\n\t\t\tthis._updateFakeSelection( domRoot );\n\t\t} else {\n\t\t\tthis._removeFakeSelection();\n\t\t\tthis._updateDomSelection( domRoot );\n\t\t}\n\t}\n\n\t/**\n\t * Updates fake selection.\n\t *\n\t * @private\n\t * @param {HTMLElement} domRoot Valid DOM root where fake selection container should be added.\n\t */\n\t_updateFakeSelection( domRoot ) {\n\t\tconst domDocument = domRoot.ownerDocument;\n\n\t\t// Create fake selection container if one does not exist.\n\t\tif ( !this._fakeSelectionContainer ) {\n\t\t\tthis._fakeSelectionContainer = domDocument.createElement( 'div' );\n\t\t\tthis._fakeSelectionContainer.style.position = 'fixed';\n\t\t\tthis._fakeSelectionContainer.style.top = 0;\n\t\t\tthis._fakeSelectionContainer.style.left = '-9999px';\n\t\t\tthis._fakeSelectionContainer.appendChild( domDocument.createTextNode( '\\u00A0' ) );\n\t\t}\n\n\t\t// Add fake container if not already added.\n\t\tif ( !this._fakeSelectionContainer.parentElement ) {\n\t\t\tdomRoot.appendChild( this._fakeSelectionContainer );\n\t\t}\n\n\t\t// Update contents.\n\t\tconst content = this.selection.fakeSelectionLabel || '\\u00A0';\n\t\tthis._fakeSelectionContainer.firstChild.data = content;\n\n\t\t// Update selection.\n\t\tconst domSelection = domDocument.getSelection();\n\t\tdomSelection.removeAllRanges();\n\t\tconst domRange = new Range();\n\t\tdomRange.selectNodeContents( this._fakeSelectionContainer );\n\t\tdomSelection.addRange( domRange );\n\n\t\t// Bind fake selection container with current selection.\n\t\tthis.domConverter.bindFakeSelection( this._fakeSelectionContainer, this.selection );\n\t}\n\n\t/**\n\t * Updates DOM selection.\n\t *\n\t * @private\n\t * @param {HTMLElement} domRoot Valid DOM root where DOM selection should be rendered.\n\t */\n\t_updateDomSelection( domRoot ) {\n\t\tconst domSelection = domRoot.ownerDocument.defaultView.getSelection();\n\t\tconst oldViewSelection = domSelection && this.domConverter.domSelectionToView( domSelection );\n\n\t\tif ( oldViewSelection && this.selection.isEqual( oldViewSelection ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Multi-range selection is not available in most browsers, and, at least in Chrome, trying to\n\t\t// set such selection, that is not continuous, throws an error. Because of that, we will just use anchor\n\t\t// and focus of view selection.\n\t\t// Since we are not supporting multi-range selection, we also do not need to check if proper editable is\n\t\t// selected. If there is any editable selected, it is okay (editable is taken from selection anchor).\n\t\tconst anchor = this.domConverter.viewPositionToDom( this.selection.anchor );\n\t\tconst focus = this.domConverter.viewPositionToDom( this.selection.focus );\n\n\t\tdomSelection.collapse( anchor.parent, anchor.offset );\n\t\tdomSelection.extend( focus.parent, focus.offset );\n\t}\n\n\t/**\n\t * Removes DOM selection.\n\t *\n\t * @private\n\t */\n\t_removeDomSelection() {\n\t\tfor ( let doc of this.domDocuments ) {\n\t\t\tconst domSelection = doc.getSelection();\n\n\t\t\tif ( domSelection.rangeCount ) {\n\t\t\t\tconst activeDomElement = doc.activeElement;\n\t\t\t\tconst viewElement = this.domConverter.getCorrespondingViewElement( activeDomElement );\n\n\t\t\t\tif ( activeDomElement && viewElement ) {\n\t\t\t\t\tdoc.getSelection().removeAllRanges();\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Removes fake selection.\n\t *\n\t * @private\n\t */\n\t_removeFakeSelection() {\n\t\tconst container = this._fakeSelectionContainer;\n\n\t\tif ( container ) {\n\t\t\tcontainer.remove();\n\t\t}\n\t}\n\n\t/**\n\t * Checks if focus needs to be updated and possibly updates it.\n\t *\n\t * @private\n\t */\n\t_updateFocus() {\n\t\tif ( this.isFocused ) {\n\t\t\tconst editable = this.selection.editableElement;\n\n\t\t\tif ( editable ) {\n\t\t\t\tthis.domConverter.focus( editable );\n\t\t\t}\n\t\t}\n\t}\n}\n\nmix( Renderer, ObservableMixin );\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/view/renderer.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/textproxy\n */\n\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/**\n * TextProxy is a wrapper for substring of {@link module:engine/view/text~Text}. Instance of this class is created by\n * {@link module:engine/view/treewalker~TreeWalker} when only a part of {@link module:engine/view/text~Text} needs to be returned.\n *\n * `TextProxy` has an API similar to {@link module:engine/view/text~Text Text} and allows to do most of the common tasks performed\n * on view nodes.\n *\n * **Note:** Some `TextProxy` instances may represent whole text node, not just a part of it.\n * See {@link module:engine/view/textproxy~TextProxy#isPartial}.\n *\n * **Note:** `TextProxy` is a readonly interface.\n *\n * **Note:** `TextProxy` instances are created on the fly basing on the current state of parent {@link module:engine/view/text~Text}.\n * Because of this it is highly unrecommended to store references to `TextProxy instances because they might get\n * invalidated due to operations on Document. Also TextProxy is not a {@link module:engine/view/node~Node} so it can not be\n * inserted as a child of {@link module:engine/view/element~Element}.\n *\n * `TextProxy` instances are created by {@link module:engine/view/treewalker~TreeWalker view tree walker}. You should not need to create\n * an instance of this class by your own.\n */\nexport default class TextProxy {\n\t/**\n\t * Creates a text proxy.\n\t *\n\t * @protected\n\t * @param {module:engine/view/text~Text} textNode Text node which part is represented by this text proxy.\n\t * @param {Number} offsetInText Offset in {@link module:engine/view/textproxy~TextProxy#textNode text node}\n\t * from which the text proxy starts.\n\t * @param {Number} length Text proxy length, that is how many text node's characters, starting from `offsetInText` it represents.\n\t * @constructor\n\t */\n\tconstructor( textNode, offsetInText, length ) {\n\t\t/**\n\t\t * Reference to the {@link module:engine/view/text~Text} element which TextProxy is a substring.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/view/text~Text} module:engine/view/textproxy~TextProxy#textNode\n\t\t */\n\t\tthis.textNode = textNode;\n\n\t\tif ( offsetInText < 0 || offsetInText > textNode.data.length ) {\n\t\t\t/**\n\t\t\t * Given offsetInText value is incorrect.\n\t\t\t *\n\t\t\t * @error view-textproxy-wrong-offsetintext\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'view-textproxy-wrong-offsetintext: Given offsetInText value is incorrect.' );\n\t\t}\n\n\t\tif ( length < 0 || offsetInText + length > textNode.data.length ) {\n\t\t\t/**\n\t\t\t * Given length value is incorrect.\n\t\t\t *\n\t\t\t * @error view-textproxy-wrong-length\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'view-textproxy-wrong-length: Given length value is incorrect.' );\n\t\t}\n\t\t/**\n\t\t * Text data represented by this text proxy.\n\t\t *\n\t\t * @readonly\n\t\t * @member {String} module:engine/view/textproxy~TextProxy#data\n\t\t */\n\t\tthis.data = textNode.data.substring( offsetInText, offsetInText + length );\n\n\t\t/**\n\t\t * Offset in the `textNode` where this `TextProxy` instance starts.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Number} module:engine/view/textproxy~TextProxy#offsetInText\n\t\t */\n\t\tthis.offsetInText = offsetInText;\n\t}\n\n\t/**\n\t * Flag indicating whether `TextProxy` instance covers only part of the original {@link module:engine/view/text~Text text node}\n\t * (`true`) or the whole text node (`false`).\n\t *\n\t * This is `false` when text proxy starts at the very beginning of {@link module:engine/view/textproxy~TextProxy#textNode textNode}\n\t * ({@link module:engine/view/textproxy~TextProxy#offsetInText offsetInText} equals `0`) and text proxy sizes is equal to\n\t * text node size.\n\t *\n\t * @readonly\n\t * @type {Boolean}\n\t */\n\tget isPartial() {\n\t\treturn this.data.length !== this.textNode.data.length;\n\t}\n\n\t/**\n\t * Parent of this text proxy, which is same as parent of text node represented by this text proxy.\n\t *\n\t * @readonly\n\t * @type {module:engine/view/element~Element|module:engine/view/documentfragment~DocumentFragment|null}\n\t */\n\tget parent() {\n\t\treturn this.textNode.parent;\n\t}\n\n\t/**\n\t * Root of this text proxy, which is same as root of text node represented by this text proxy.\n\t *\n\t * @readonly\n\t * @type {module:engine/view/node~Node|module:engine/view/documentfragment~DocumentFragment}\n\t */\n\tget root() {\n\t\treturn this.textNode.root;\n\t}\n\n\t/**\n\t * {@link module:engine/view/document~Document View document} that owns this text proxy, or `null` if the text proxy is inside\n\t * {@link module:engine/view/documentfragment~DocumentFragment document fragment}.\n\t *\n\t * @readonly\n\t * @type {module:engine/view/document~Document|null}\n\t */\n\tget document() {\n\t\treturn this.textNode.document;\n\t}\n\n\t/**\n\t * Checks whether given view tree object is of given type.\n\t *\n\t * Read more in {@link module:engine/view/node~Node#is}.\n\t *\n\t * @param {String} type\n\t * @returns {Boolean}\n\t */\n\tis( type ) {\n\t\treturn type == 'textProxy';\n\t}\n\n\t/**\n\t * Returns ancestors array of this text proxy.\n\t *\n\t * @param {Object} options Options object.\n\t * @param {Boolean} [options.includeNode=false] When set to `true` {#textNode} will be also included in parent's array.\n\t * @param {Boolean} [options.parentFirst=false] When set to `true`, array will be sorted from text proxy parent to\n\t * root element, otherwise root element will be the first item in the array.\n\t * @returns {Array} Array with ancestors.\n\t */\n\tgetAncestors( options = { includeNode: false, parentFirst: false } ) {\n\t\tconst ancestors = [];\n\t\tlet parent = options.includeNode ? this.textNode : this.parent;\n\n\t\twhile ( parent !== null ) {\n\t\t\tancestors[ options.parentFirst ? 'push' : 'unshift' ]( parent );\n\t\t\tparent = parent.parent;\n\t\t}\n\n\t\treturn ancestors;\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-engine/src/view/textproxy.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module enter/enter\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport EnterCommand from './entercommand';\nimport EnterObserver from './enterobserver';\n\n/**\n * The Enter feature. Handles the <kbd>Enter</kbd> and <kbd>Shift + Enter</kbd> keys in the editor.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class Enter extends Plugin {\n\tinit() {\n\t\tconst editor = this.editor;\n\t\tconst editingView = editor.editing.view;\n\n\t\teditingView.addObserver( EnterObserver );\n\n\t\teditor.commands.set( 'enter', new EnterCommand( editor ) );\n\n\t\t// TODO We may use the keystroke handler for that.\n\t\tthis.listenTo( editingView, 'enter', ( evt, data ) => {\n\t\t\teditor.execute( 'enter' );\n\t\t\tdata.preventDefault();\n\t\t}, { priority: 'low' } );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-enter/src/enter.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module enter/entercommand\n */\n\nimport Command from '@ckeditor/ckeditor5-core/src/command/command';\nimport Position from '@ckeditor/ckeditor5-engine/src/model/position';\n\n/**\n * Enter command. It is used by the {@link module:enter/enter~Enter Enter feature} to handle the <kbd>Enter</kbd> key.\n *\n * @extends modue:core/command/command~Command\n */\nexport default class EnterCommand extends Command {\n\t/**\n\t * @inheritDoc\n\t */\n\t_doExecute() {\n\t\tconst doc = this.editor.document;\n\t\tconst batch = doc.batch();\n\n\t\tdoc.enqueueChanges( () => {\n\t\t\tenterBlock( this.editor.data, batch, doc.selection, doc.schema );\n\n\t\t\tthis.fire( 'afterExecute', { batch } );\n\t\t} );\n\t}\n}\n\n// Creates a new block in the way that the <kbd>Enter</kbd> key is expected to work.\n//\n// @param {engine.controller.DataController} dataController\n// @param {module:engine/model/batch~Batch} batch A batch to which the deltas will be added.\n// @param {module:engine/model/selection~Selection} selection Selection on which the action should be performed.\n// @param {module:engine/model/schema~Schema} schema\nfunction enterBlock( dataController, batch, selection, schema ) {\n\tconst isSelectionEmpty = selection.isCollapsed;\n\tconst range = selection.getFirstRange();\n\tconst startElement = range.start.parent;\n\tconst endElement = range.end.parent;\n\n\t// Do nothing if selection starts or ends inside `limit` elements.\n\tif ( schema.limits.has( startElement.name ) || schema.limits.has( endElement.name ) ) {\n\t\treturn;\n\t}\n\n\t// Don't touch the root.\n\tif ( startElement.root == startElement ) {\n\t\tif ( !isSelectionEmpty ) {\n\t\t\tdataController.deleteContent( selection, batch );\n\t\t}\n\n\t\treturn;\n\t}\n\n\tif ( isSelectionEmpty ) {\n\t\tsplitBlock( batch, selection, range.start );\n\t} else {\n\t\tconst shouldMerge = range.start.isAtStart && range.end.isAtEnd;\n\t\tconst isContainedWithinOneElement = ( startElement == endElement );\n\n\t\tdataController.deleteContent( selection, batch, { merge: shouldMerge } );\n\n\t\tif ( !shouldMerge ) {\n\t\t\t// Partially selected elements.\n\t\t\t//\n\t\t\t// <h>x[xx]x</h>\t\t-> <h>x^x</h>\t\t\t-> <h>x</h><h>^x</h>\n\t\t\tif ( isContainedWithinOneElement ) {\n\t\t\t\tsplitBlock( batch, selection, selection.focus );\n\t\t\t}\n\t\t\t// Selection over multiple elements.\n\t\t\t//\n\t\t\t// <h>x[x</h><p>y]y<p>\t-> <h>x^</h><p>y</p>\t-> <h>x</h><p>^y</p>\n\t\t\telse {\n\t\t\t\tselection.collapse( endElement );\n\t\t\t}\n\t\t}\n\t}\n}\n\nfunction splitBlock( batch, selection, splitPos ) {\n\tif ( splitPos.isAtEnd ) {\n\t\t// If the split is at the end of element, instead of splitting, just create a clone of position's parent\n\t\t// element and insert it after cloned element. The result is the same but less operations are taken\n\t\t// and it's more semantically correct (when it comes to operational transformation).\n\t\tconst oldElement = splitPos.parent;\n\t\tconst newElement = new oldElement.constructor( oldElement.name, oldElement.getAttributes() );\n\n\t\tbatch.insert( Position.createAfter( splitPos.parent ), newElement );\n\t} else {\n\t\tbatch.split( splitPos );\n\t}\n\n\tselection.collapse( splitPos.parent.nextSibling );\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-enter/src/entercommand.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module enter/enterobserver\n */\n\nimport Observer from '@ckeditor/ckeditor5-engine/src/view/observer/observer';\nimport DomEventData from '@ckeditor/ckeditor5-engine/src/view/observer/domeventdata';\nimport { keyCodes } from '@ckeditor/ckeditor5-utils/src/keyboard';\n\n/**\n * Enter observer introduces the {@link module:engine/view/document~Document#event:enter} event.\n *\n * @extends module:engine/view/observer~Observer\n */\nexport default class EnterObserver extends Observer {\n\tconstructor( document ) {\n\t\tsuper( document );\n\n\t\tdocument.on( 'keydown', ( evt, data ) => {\n\t\t\tif ( this.isEnabled && data.keyCode == keyCodes.enter ) {\n\t\t\t\tdocument.fire( 'enter', new DomEventData( document, data.domEvent ) );\n\t\t\t}\n\t\t} );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tobserve() {}\n}\n\n/**\n * Event fired when the user presses the <kbd>Enter</kbd> key.\n *\n * Note: This event is fired by the {@link module:enter/enterobserver~EnterObserver observer}\n * (usually registered by the {@link module:enter/enter~Enter Enter feature}).\n *\n * @event module:engine/view/document~Document#event:enter\n * @param {module:engine/view/observer/domeventdata~DomEventData} data\n */\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-enter/src/enterobserver.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module heading/heading\n */\n\nimport HeadingEngine from './headingengine';\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\n\nimport Model from '@ckeditor/ckeditor5-ui/src/model';\nimport createListDropdown from '@ckeditor/ckeditor5-ui/src/dropdown/list/createlistdropdown';\n\nimport Collection from '@ckeditor/ckeditor5-utils/src/collection';\n\n/**\n * The headings feature. It introduces the `headings` drop-down list and the `heading` command which allow\n * to convert paragraphs into headings.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class Heading extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get requires() {\n\t\treturn [ HeadingEngine ];\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tconst editor = this.editor;\n\t\tconst command = editor.commands.get( 'heading' );\n\t\tconst options = command.options;\n\t\tconst collection = new Collection();\n\n\t\t// Add options to collection.\n\t\tfor ( const { id, label } of options ) {\n\t\t\tcollection.add( new Model( {\n\t\t\t\tid, label\n\t\t\t} ) );\n\t\t}\n\n\t\t// Create dropdown model.\n\t\tconst dropdownModel = new Model( {\n\t\t\twithText: true,\n\t\t\titems: collection\n\t\t} );\n\n\t\t// Bind dropdown model to command.\n\t\tdropdownModel.bind( 'isEnabled' ).to( command, 'isEnabled' );\n\t\tdropdownModel.bind( 'label' ).to( command, 'value', option => option.label );\n\n\t\t// Register UI component.\n\t\teditor.ui.componentFactory.add( 'headings', ( locale ) => {\n\t\t\tconst dropdown = createListDropdown( dropdownModel, locale );\n\n\t\t\t// Execute command when an item from the dropdown is selected.\n\t\t\tthis.listenTo( dropdown, 'execute', ( { source: { id } } ) => {\n\t\t\t\teditor.execute( 'heading', { id } );\n\t\t\t\teditor.editing.view.focus();\n\t\t\t} );\n\n\t\t\treturn dropdown;\n\t\t} );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-heading/src/heading.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module heading/headingcommand\n */\n\nimport Command from '@ckeditor/ckeditor5-core/src/command/command';\nimport RootElement from '@ckeditor/ckeditor5-engine/src/model/rootelement';\n\n/**\n * The heading command. It is used by the {@link module:heading/heading~Heading heading feature} to apply headings.\n *\n * @extends module:core/command/command~Command\n */\nexport default class HeadingCommand extends Command {\n\t/**\n\t * Creates an instance of the command.\n\t *\n\t * @param {module:core/editor/editor~Editor} editor Editor instance.\n\t * @param {Array.<module:heading/headingcommand~HeadingOption>} options Heading options to be used by the command instance.\n\t */\n\tconstructor( editor, options, defaultOptionId ) {\n\t\tsuper( editor );\n\n\t\t/**\n\t\t * Heading options used by this command.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:heading/headingcommand~HeadingOption}\n\t\t */\n\t\tthis.options = options;\n\n\t\t/**\n\t\t * The id of the default option among {@link #options}.\n\t\t *\n\t\t * @readonly\n\t\t * @private\n\t\t * @member {module:heading/headingcommand~HeadingOption#id}\n\t\t */\n\t\tthis._defaultOptionId = defaultOptionId;\n\n\t\t/**\n\t\t * The currently selected heading option.\n\t\t *\n\t\t * @readonly\n\t\t * @observable\n\t\t * @member {module:heading/headingcommand~HeadingOption} #value\n\t\t */\n\t\tthis.set( 'value', this.defaultOption );\n\n\t\t// Update current value each time changes are done on document.\n\t\tthis.listenTo( editor.document, 'changesDone', () => this._updateValue() );\n\t}\n\n\t/**\n\t * The default option.\n\t *\n\t * @member {module:heading/headingcommand~HeadingOption} #defaultOption\n\t */\n\tget defaultOption() {\n\t\t// See https://github.com/ckeditor/ckeditor5/issues/98.\n\t\treturn this._getOptionById( this._defaultOptionId );\n\t}\n\n\t/**\n\t * Executes command.\n\t *\n\t * @protected\n\t * @param {Object} [options] Options for executed command.\n\t * @param {String} [options.id] The identifier of the heading option that should be applied. It should be one of the\n\t * {@link module:heading/headingcommand~HeadingOption heading options} provided to the command constructor. If this parameter is not\n\t * provided,\n\t * the value from {@link #defaultOption defaultOption} will be used.\n\t * @param {module:engine/model/batch~Batch} [options.batch] Batch to collect all the change steps.\n\t * New batch will be created if this option is not set.\n\t */\n\t_doExecute( options = {} ) {\n\t\t// TODO: What should happen if option is not found?\n\t\tconst id = options.id || this.defaultOption.id;\n\t\tconst doc = this.editor.document;\n\t\tconst selection = doc.selection;\n\t\tconst startPosition = selection.getFirstPosition();\n\t\tconst elements = [];\n\t\t// Storing selection ranges and direction to fix selection after renaming. See ckeditor5-engine#367.\n\t\tconst ranges = [ ...selection.getRanges() ];\n\t\tconst isSelectionBackward = selection.isBackward;\n\t\t// If current option is same as new option - toggle already applied option back to default one.\n\t\tconst shouldRemove = ( id === this.value.id );\n\n\t\t// Collect elements to change option.\n\t\t// This implementation may not be future proof but it's satisfactory at this stage.\n\t\tif ( selection.isCollapsed ) {\n\t\t\tconst block = findTopmostBlock( startPosition );\n\n\t\t\tif ( block ) {\n\t\t\t\telements.push( block );\n\t\t\t}\n\t\t} else {\n\t\t\tfor ( let range of ranges ) {\n\t\t\t\tlet startBlock = findTopmostBlock( range.start );\n\t\t\t\tconst endBlock = findTopmostBlock( range.end, false );\n\n\t\t\t\telements.push( startBlock );\n\n\t\t\t\twhile ( startBlock !== endBlock ) {\n\t\t\t\t\tstartBlock = startBlock.nextSibling;\n\t\t\t\t\telements.push( startBlock );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\tdoc.enqueueChanges( () => {\n\t\t\tconst batch = options.batch || doc.batch();\n\n\t\t\tfor ( let element of elements ) {\n\t\t\t\t// When removing applied option.\n\t\t\t\tif ( shouldRemove ) {\n\t\t\t\t\tif ( element.name === id ) {\n\t\t\t\t\t\tbatch.rename( element, this.defaultOption.id );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\t// When applying new option.\n\t\t\t\telse {\n\t\t\t\t\tbatch.rename( element, id );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// If range's selection start/end is placed directly in renamed block - we need to restore it's position\n\t\t\t// after renaming, because renaming puts new element there.\n\t\t\tdoc.selection.setRanges( ranges, isSelectionBackward );\n\t\t} );\n\t}\n\n\t/**\n\t * Returns the option by a given ID.\n\t *\n\t * @private\n\t * @param {String} id\n\t * @returns {module:heading/headingcommand~HeadingOption}\n\t */\n\t_getOptionById( id ) {\n\t\treturn this.options.find( item => item.id === id ) || this.defaultOption;\n\t}\n\n\t/**\n\t * Updates command's {@link #value value} based on current selection.\n\t *\n\t * @private\n\t */\n\t_updateValue() {\n\t\tconst position = this.editor.document.selection.getFirstPosition();\n\t\tconst block = findTopmostBlock( position );\n\n\t\tif ( block ) {\n\t\t\tthis.value = this._getOptionById( block.name );\n\t\t}\n\t}\n}\n\n// Looks for the topmost element in the position's ancestor (up to an element in the root).\n//\n// NOTE: This method does not check the schema directly &mdash; it assumes that only block elements can be placed directly inside\n// the root.\n//\n// @private\n// @param {engine.model.Position} position\n// @param {Boolean} [nodeAfter=true] When the position is placed inside the root element, this will determine if the element before\n// or after a given position will be returned.\n// @returns {engine.model.Element}\nfunction findTopmostBlock( position, nodeAfter = true ) {\n\tlet parent = position.parent;\n\n\t// If position is placed inside root - get element after/before it.\n\tif ( parent instanceof RootElement ) {\n\t\treturn nodeAfter ? position.nodeAfter : position.nodeBefore;\n\t}\n\n\twhile ( !( parent.parent instanceof RootElement ) ) {\n\t\tparent = parent.parent;\n\t}\n\n\treturn parent;\n}\n\n/**\n * Heading option descriptor.\n *\n * @typedef {Object} module:heading/headingcommand~HeadingOption\n * @property {String} id Option identifier. It will be used as the element's name in the model.\n * @property {String} element The name of the view element that will be used to represent the model element in the view.\n * @property {String} label The display name of the option.\n */\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-heading/src/headingcommand.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module image/image\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport ImageEngine from './image/imageengine';\nimport Widget from './widget/widget';\nimport ImageTextAlternative from './imagetextalternative';\n\nimport '../theme/theme.scss';\n\n/**\n * The image plugin.\n *\n * Uses {@link module:image/image/imageengine~ImageEngine}.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class Image extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get requires() {\n\t\treturn [ ImageEngine, Widget, ImageTextAlternative ];\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-image/src/image.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module image/image/converters\n */\n\nimport ModelElement from '@ckeditor/ckeditor5-engine/src/model/element';\nimport ModelPosition from '@ckeditor/ckeditor5-engine/src/model/position';\nimport modelWriter from '@ckeditor/ckeditor5-engine/src/model/writer';\n\n/**\n * Returns function that converts image view representation:\n *\n *\t\t<figure class=\"image\"><img src=\"...\" alt=\"...\"></img></figure>\n *\n * to model representation:\n *\n *\t\t<image src=\"...\" alt=\"...\"></image>\n *\n * @returns {Function}\n */\nexport function viewToModelImage() {\n\treturn ( evt, data, consumable, conversionApi ) => {\n\t\tconst viewFigureElement = data.input;\n\n\t\t// *** Step 1: Validate conversion.\n\t\t// Check if figure element can be consumed.\n\t\tif ( !consumable.test( viewFigureElement, { name: true, class: 'image' } ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Check if image element can be converted in current context.\n\t\tif ( !conversionApi.schema.check( { name: 'image', inside: data.context, attributes: 'src' } ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Check if img element is placed inside figure element and can be consumed with `src` attribute.\n\t\tconst viewImg = viewFigureElement.getChild( 0 );\n\n\t\tif ( !viewImg || viewImg.name != 'img' || !consumable.test( viewImg, { name: true, attribute: 'src' } ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// *** Step2: Convert to model.\n\t\tconsumable.consume( viewFigureElement, { name: true, class: 'image' } );\n\t\tconsumable.consume( viewImg, { name: true, attribute: 'src' } );\n\n\t\t// Create model element.\n\t\tconst modelImage = new ModelElement( 'image', {\n\t\t\tsrc: viewImg.getAttribute( 'src' )\n\t\t} );\n\n\t\t// Convert `alt` attribute if present.\n\t\tif ( consumable.consume( viewImg, { attribute: [ 'alt' ] } ) ) {\n\t\t\tmodelImage.setAttribute( 'alt', viewImg.getAttribute( 'alt' ) );\n\t\t}\n\n\t\t// Convert children of converted view element and append them to `modelImage`.\n\t\t// TODO https://github.com/ckeditor/ckeditor5-engine/issues/736.\n\t\tdata.context.push( modelImage );\n\t\tconst modelChildren = conversionApi.convertChildren( viewFigureElement, consumable, data );\n\t\tconst insertPosition = ModelPosition.createAt( modelImage, 'end' );\n\t\tmodelWriter.insert( insertPosition, modelChildren );\n\t\tdata.context.pop();\n\n\t\tdata.output = modelImage;\n\t};\n}\n\n/**\n * Creates image attribute converter for provided model conversion dispatchers.\n *\n * @param {Array.<module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher>} dispatchers\n * @param {String} attributeName\n */\nexport function createImageAttributeConverter( dispatchers, attributeName ) {\n\tfor ( let dispatcher of dispatchers ) {\n\t\tdispatcher.on( `addAttribute:${ attributeName }:image`, modelToViewAttributeConverter );\n\t\tdispatcher.on( `changeAttribute:${ attributeName }:image`, modelToViewAttributeConverter );\n\t\tdispatcher.on( `removeAttribute:${ attributeName }:image`, modelToViewAttributeConverter );\n\t}\n}\n\n// Model to view image converter converting given attribute, and adding it to `img` element nested inside `figure` element.\n//\n// @private\nfunction modelToViewAttributeConverter( evt, data, consumable, conversionApi ) {\n\tconst parts = evt.name.split( ':' );\n\tconst consumableType = parts[ 0 ] + ':' + parts[ 1 ];\n\n\tif ( !consumable.consume( data.item, consumableType ) ) {\n\t\treturn;\n\t}\n\n\tconst figure = conversionApi.mapper.toViewElement( data.item );\n\tconst img = figure.getChild( 0 );\n\n\tif ( parts[ 0 ] == 'removeAttribute' ) {\n\t\timg.removeAttribute( data.attributeKey );\n\t} else {\n\t\timg.setAttribute( data.attributeKey, data.attributeNewValue );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-image/src/image/converters.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module image/imagecaption\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport ImageCaptionEngine from './imagecaption/imagecaptionengine';\nimport '../theme/imagecaption/theme.scss';\n\n/**\n * The image caption plugin.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class ImageCaption extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get requires() {\n\t\treturn [ ImageCaptionEngine ];\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-image/src/imagecaption.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module image/imagecaption/imagecaptionengine\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport ModelTreeWalker from '@ckeditor/ckeditor5-engine/src/model/treewalker';\nimport ModelElement from '@ckeditor/ckeditor5-engine/src/model/element';\nimport ViewContainerElement from '@ckeditor/ckeditor5-engine/src/view/containerelement';\nimport ViewElement from '@ckeditor/ckeditor5-engine/src/view/element';\nimport ViewPosition from '@ckeditor/ckeditor5-engine/src/view/position';\nimport ViewRange from '@ckeditor/ckeditor5-engine/src/view/range';\nimport viewWriter from '@ckeditor/ckeditor5-engine/src/view/writer';\nimport ModelPosition from '@ckeditor/ckeditor5-engine/src/model/position';\nimport buildViewConverter from '@ckeditor/ckeditor5-engine/src/conversion/buildviewconverter';\nimport ViewMatcher from '@ckeditor/ckeditor5-engine/src/view/matcher';\nimport { isImage, isImageWidget } from '../image/utils';\nimport { captionElementCreator, isCaption, getCaptionFromImage } from './utils';\n\n/**\n * The image caption engine plugin.\n *\n * Registers proper converters. Takes care of adding caption element if image without it is inserted to model document.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class ImageCaptionEngine extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tconst editor = this.editor;\n\t\tconst document = editor.document;\n\t\tconst viewDocument = editor.editing.view;\n\t\tconst schema = document.schema;\n\t\tconst data = editor.data;\n\t\tconst editing = editor.editing;\n\n\t\t/**\n\t\t * Last selected caption editable.\n\t\t * It is used for hiding editable when is empty and image widget is no longer selected.\n\t\t *\n\t\t * @member {module:image/imagecaption/imagecaptionengine~ImageCaptionEngine} #_lastSelectedEditable\n\t\t */\n\n\t\t// Schema configuration.\n\t\tschema.registerItem( 'caption' );\n\t\tschema.allow( { name: '$inline', inside: 'caption' } );\n\t\tschema.allow( { name: 'caption', inside: 'image' } );\n\t\tschema.limits.add( 'caption' );\n\n\t\t// Add caption element to each image inserted without it.\n\t\tdocument.on( 'change', insertMissingCaptionElement );\n\n\t\t// View to model converter for data pipeline.\n\t\tconst matcher = new ViewMatcher( ( element ) => {\n\t\t\tconst parent = element.parent;\n\n\t\t\t// Convert only captions for images.\n\t\t\tif ( element.name == 'figcaption' && parent && parent.name == 'figure' && parent.hasClass( 'image' ) ) {\n\t\t\t\treturn { name: true };\n\t\t\t}\n\n\t\t\treturn null;\n\t\t} );\n\n\t\tbuildViewConverter()\n\t\t\t.for( data.viewToModel )\n\t\t\t.from( matcher )\n\t\t\t.toElement( 'caption' );\n\n\t\t// Model to view converter for data pipeline.\n\t\tdata.modelToView.on(\n\t\t\t'insert:caption',\n\t\t\tcaptionModelToView( new ViewContainerElement( 'figcaption' ) )\n\t\t);\n\n\t\t// Model to view converter for editing pipeline.\n\t\tediting.modelToView.on(\n\t\t\t'insert:caption',\n\t\t\tcaptionModelToView( captionElementCreator( viewDocument ) )\n\t\t);\n\n\t\t// Adding / removing caption element when there is no text in the model.\n\t\tconst selection = viewDocument.selection;\n\n\t\t// Update view before each rendering.\n\t\tthis.listenTo( viewDocument, 'render', () => {\n\t\t\t// Check if there is an empty caption view element to remove.\n\t\t\tthis._removeEmptyCaption();\n\n\t\t\t// Check if image widget is selected and caption view element needs to be added.\n\t\t\tthis._addCaption();\n\n\t\t\t// If selection is currently inside caption editable - store it to hide when empty.\n\t\t\tconst editableElement = selection.editableElement;\n\n\t\t\tif ( editableElement && isCaption( selection.editableElement ) ) {\n\t\t\t\tthis._lastSelectedEditable = selection.editableElement;\n\t\t\t}\n\t\t}, { priority: 'high' } );\n\t}\n\n\t/**\n\t * Checks if there is an empty caption element to remove from view.\n\t *\n\t * @private\n\t */\n\t_removeEmptyCaption() {\n\t\tconst viewSelection = this.editor.editing.view.selection;\n\t\tconst viewCaptionElement = this._lastSelectedEditable;\n\n\t\t// No caption to hide.\n\t\tif ( !viewCaptionElement ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// If selection is placed inside caption - do not remove it.\n\t\tif ( viewSelection.editableElement === viewCaptionElement ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Do not remove caption if selection is placed on image that contains that caption.\n\t\tconst selectedElement = viewSelection.getSelectedElement();\n\n\t\tif ( selectedElement && isImageWidget( selectedElement ) ) {\n\t\t\tconst viewImage = viewCaptionElement.findAncestor( element => element == selectedElement );\n\n\t\t\tif ( viewImage ) {\n\t\t\t\treturn;\n\t\t\t}\n\t\t}\n\n\t\t// Remove image caption if its empty.\n\t\tif ( viewCaptionElement.childCount === 0 ) {\n\t\t\tconst mapper = this.editor.editing.mapper;\n\t\t\tviewWriter.remove( ViewRange.createOn( viewCaptionElement ) );\n\t\t\tmapper.unbindViewElement( viewCaptionElement );\n\t\t}\n\t}\n\n\t/**\n\t * Checks if selected image needs a new caption element inside.\n\t *\n\t * @private\n\t */\n\t_addCaption() {\n\t\tconst editing = this.editor.editing;\n\t\tconst selection = editing.view.selection;\n\t\tconst imageFigure = selection.getSelectedElement();\n\t\tconst mapper = editing.mapper;\n\t\tconst editableCreator = captionElementCreator( editing.view );\n\n\t\tif ( imageFigure && isImageWidget( imageFigure ) ) {\n\t\t\tconst modelImage = mapper.toModelElement( imageFigure );\n\t\t\tconst modelCaption = getCaptionFromImage( modelImage );\n\t\t\tlet viewCaption =  mapper.toViewElement( modelCaption );\n\n\t\t\tif ( !viewCaption ) {\n\t\t\t\tviewCaption = editableCreator();\n\n\t\t\t\tconst viewPosition = ViewPosition.createAt( imageFigure, 'end' );\n\t\t\t\tmapper.bindElements( modelCaption, viewCaption );\n\t\t\t\tviewWriter.insert( viewPosition, viewCaption );\n\t\t\t}\n\n\t\t\tthis._lastSelectedEditable = viewCaption;\n\t\t}\n\t}\n}\n\n// Checks whether data inserted to the model document have image element that has no caption element inside it.\n// If there is none - adds it to the image element.\n//\n// @private\nfunction insertMissingCaptionElement( evt, changeType, data, batch ) {\n\tif ( changeType !== 'insert' ) {\n\t\treturn;\n\t}\n\n\tconst walker = new ModelTreeWalker( {\n\t\tboundaries: data.range,\n\t\tignoreElementEnd: true\n\t} );\n\n\tfor ( let value of walker ) {\n\t\tconst item = value.item;\n\n\t\tif ( value.type == 'elementStart' && isImage( item ) && !getCaptionFromImage( item ) ) {\n\t\t\tbatch.document.enqueueChanges( () => {\n\t\t\t\tbatch.insert( ModelPosition.createAt( item, 'end' ), new ModelElement( 'caption' ) );\n\t\t\t} );\n\t\t}\n\t}\n}\n\n// Creates a converter that converts image caption model element to view element.\n//\n// @private\n// @param {Function|module:engine/view/element~Element} elementCreator\n// @return {Function}\nfunction captionModelToView( elementCreator ) {\n\treturn ( evt, data, consumable, conversionApi ) => {\n\t\tconst captionElement = data.item;\n\n\t\tif ( isImage( captionElement.parent ) && ( captionElement.childCount > 0 ) ) {\n\t\t\tif ( !consumable.consume( data.item, 'insert' ) ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tconst imageFigure = conversionApi.mapper.toViewElement( data.range.start.parent );\n\t\t\tconst viewElement = ( elementCreator instanceof ViewElement ) ?\n\t\t\t\telementCreator.clone( true ) :\n\t\t\t\telementCreator( data, consumable, conversionApi );\n\n\t\t\tconst viewPosition = ViewPosition.createAt( imageFigure, 'end' );\n\t\t\tconversionApi.mapper.bindElements( data.item, viewElement );\n\t\t\tviewWriter.insert( viewPosition, viewElement );\n\t\t}\n\t};\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-image/src/imagecaption/imagecaptionengine.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module image/imagecaption/utils\n */\n\nimport ViewEditableElement from '@ckeditor/ckeditor5-engine/src/view/editableelement';\nimport ModelElement from '@ckeditor/ckeditor5-engine/src/model/element';\n\nconst captionSymbol = Symbol( 'imageCaption' );\n\n/**\n * Returns a function that creates caption editable element for the given {@link module:engine/view/document~Document}.\n *\n * @param {module:engine/view/document~Document} viewDocument\n * @return {Function}\n */\nexport function captionElementCreator( viewDocument ) {\n\treturn () => {\n\t\tconst editable = new ViewEditableElement( 'figcaption', { contenteditable: true } );\n\t\teditable.document = viewDocument;\n\t\teditable.setCustomProperty( captionSymbol, true );\n\n\t\teditable.on( 'change:isFocused', ( evt, property, is ) => {\n\t\t\tif ( is ) {\n\t\t\t\teditable.addClass( 'focused' );\n\t\t\t} else {\n\t\t\t\teditable.removeClass( 'focused' );\n\t\t\t}\n\t\t} );\n\n\t\treturn editable;\n\t};\n}\n\n/**\n * Returns `true` if given view element is image's caption editable.\n *\n * @param {module:engine/view/element~Element} viewElement\n * @return {Boolean}\n */\nexport function isCaption( viewElement ) {\n\treturn !!viewElement.getCustomProperty( captionSymbol );\n}\n\n/**\n * Returns caption's model element from given image element. Returns `null` if no caption is found.\n *\n * @param {module:engine/model/element~Element} imageModelElement\n * @return {module:engine/model/element~Element|null}\n */\nexport function getCaptionFromImage( imageModelElement ) {\n\tfor ( let node of imageModelElement.getChildren() ) {\n\t\tif ( node instanceof ModelElement && node.name == 'caption' ) {\n\t\t\treturn node;\n\t\t}\n\t}\n\n\treturn null;\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-image/src/imagecaption/utils.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module image/imagestyle\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport ImageStyleEngine from './imagestyle/imagestyleengine';\nimport ButtonView from '@ckeditor/ckeditor5-ui/src/button/buttonview';\n\n/**\n * The image style plugin.\n *\n * Uses {@link module:image/imagestyle/imagestyleengine~ImageStyleEngine}.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class ImageStyle extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get requires() {\n\t\treturn [ ImageStyleEngine ];\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tconst styles = this.editor.config.get( 'image.styles' );\n\n\t\tfor ( let style of styles ) {\n\t\t\tthis._createButton( style );\n\t\t}\n\n\t\t// Push buttons to default image toolbar if one exists.\n\t\tconst defaultImageToolbarConfig = this.editor.config.get( 'image.defaultToolbar' );\n\n\t\tif ( defaultImageToolbarConfig ) {\n\t\t\tif ( defaultImageToolbarConfig.length ) {\n\t\t\t\tdefaultImageToolbarConfig.push( '|' );\n\t\t\t}\n\n\t\t\tstyles.forEach( style => defaultImageToolbarConfig.push( style.name ) );\n\t\t}\n\t}\n\n\t/**\n\t * Creates button for each style and stores it in editor's {@link module:ui/componentfactory~ComponentFactory ComponentFactory}.\n\t *\n\t * @private\n\t * @param {module:image/imagestyle/imagestyleengine~ImageStyleFormat} style\n\t */\n\t_createButton( style ) {\n\t\tconst editor = this.editor;\n\t\tconst command = editor.commands.get( style.name );\n\n\t\teditor.ui.componentFactory.add( style.name, ( locale ) => {\n\t\t\tconst view = new ButtonView( locale );\n\n\t\t\tview.set( {\n\t\t\t\tlabel: style.title,\n\t\t\t\ticon: style.icon,\n\t\t\t\ttooltip: true\n\t\t\t} );\n\n\t\t\tview.bind( 'isEnabled' ).to( command, 'isEnabled' );\n\t\t\tview.bind( 'isOn' ).to( command, 'value' );\n\n\t\t\tthis.listenTo( view, 'execute', () => editor.execute( style.name ) );\n\n\t\t\treturn view;\n\t\t} );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-image/src/imagestyle.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module image/imagestyle/converters\n */\n\nimport { isImage } from '../image/utils';\n\n/**\n * Returns converter for the `imageStyle` attribute. It can be used for adding, changing and removing the attribute.\n *\n * @param {Object} styles Object containing available styles. See {@link module:image/imagestyle/imagestyleengine~ImageStyleFormat}\n * for more details.\n * @returns {Function} Model to view attribute converter.\n */\nexport function modelToViewStyleAttribute( styles ) {\n\treturn ( evt, data, consumable, conversionApi ) => {\n\t\tconst eventType = evt.name.split( ':' )[ 0 ];\n\t\tconst consumableType = eventType + ':imageStyle';\n\n\t\tif ( !consumable.test( data.item, consumableType ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Check if there is class name associated with given value.\n\t\tconst newStyle = getStyleByValue( data.attributeNewValue, styles );\n\t\tconst oldStyle = getStyleByValue( data.attributeOldValue, styles );\n\t\tconst viewElement = conversionApi.mapper.toViewElement( data.item );\n\n\t\tif ( handleRemoval( eventType, oldStyle, viewElement ) || handleAddition( eventType, newStyle, viewElement ) ) {\n\t\t\tconsumable.consume( data.item, consumableType );\n\t\t}\n\t};\n}\n\n/**\n * Returns view to model converter converting image CSS classes to proper value in the model.\n *\n * @param {Array.<module:image/imagestyle/imagestyleengine~ImageStyleFormat>} styles Styles for which converter is created.\n * @returns {Function} View to model converter.\n */\nexport function viewToModelStyleAttribute( styles ) {\n\t// Convert only styles without `null` value.\n\tconst filteredStyles = styles.filter( style => style.value !== null );\n\n\treturn ( evt, data, consumable, conversionApi ) => {\n\t\tfor ( let style of filteredStyles ) {\n\t\t\tviewToModelImageStyle( style, data, consumable, conversionApi );\n\t\t}\n\t};\n}\n\n// Converter from view to model converting single style.\n// For more information see {@link module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher};\n//\n// @param {module:image/imagestyle/imagestyleengine~ImageStyleFormat} style\n// @param {Object} data\n// @param {module:engine/conversion/viewconsumable~ViewConsumable} consumable\n// @param {Object} conversionApi\nfunction viewToModelImageStyle( style, data, consumable, conversionApi ) {\n\tconst viewFigureElement = data.input;\n\tconst modelImageElement = data.output;\n\n\t// *** Step 1: Validate conversion.\n\t// Check if view element has proper class to consume.\n\tif ( !consumable.test( viewFigureElement, { class: style.className } ) ) {\n\t\treturn;\n\t}\n\n\t// Check if figure is converted to image.\n\tif ( !isImage( modelImageElement ) ) {\n\t\treturn;\n\t}\n\n\t// Check if image element can be placed in current context wit additional attribute.\n\tconst attributes = [ ...modelImageElement.getAttributeKeys(), 'imageStyle' ];\n\n\tif ( !conversionApi.schema.check( { name: 'image', inside: data.context, attributes } ) ) {\n\t\treturn;\n\t}\n\n\t// *** Step2: Convert to model.\n\tconsumable.consume( viewFigureElement, { class: style.className } );\n\tmodelImageElement.setAttribute( 'imageStyle', style.value );\n}\n\n// Returns style with given `value` from array of styles.\n//\n// @param {String} value\n// @param {Array.<module:image/imagestyle/imagestyleengine~ImageStyleFormat> } styles\n// @return {module:image/imagestyle/imagestyleengine~ImageStyleFormat|undefined}\nfunction getStyleByValue( value, styles ) {\n\tfor ( let style of styles ) {\n\t\tif ( style.value === value ) {\n\t\t\treturn style;\n\t\t}\n\t}\n}\n\n// Handles converting removal of the attribute.\n// Returns `true` when handling was processed correctly and further conversion can be performed.\n//\n// @param {String} eventType Type of the event.\n// @param {module:image/imagestyle/imagestyleengine~ImageStyleFormat} style\n// @param {module:engine/view/element~Element} viewElement\n// @returns {Boolean} Whether the change was handled.\nfunction handleRemoval( eventType, style, viewElement ) {\n\tif ( style && ( eventType == 'changeAttribute' || eventType == 'removeAttribute' ) ) {\n\t\tviewElement.removeClass( style.className );\n\n\t\treturn true;\n\t}\n\n\treturn false;\n}\n\n// Handles converting addition of the attribute.\n// Returns `true` when handling was processed correctly and further conversion can be performed.\n//\n// @param {String} eventType Type of the event.\n// @param {module:image/imagestyle/imagestyleengine~ImageStyleFormat} style\n// @param {module:engine/view/element~Element} viewElement\n// @returns {Boolean} Whether the change was handled.\nfunction handleAddition( evenType, style, viewElement ) {\n\tif ( style && ( evenType == 'addAttribute' || evenType == 'changeAttribute' ) ) {\n\t\tviewElement.addClass( style.className );\n\n\t\treturn true;\n\t}\n\n\treturn false;\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-image/src/imagestyle/converters.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module image/imagestyle/imagestylecommand\n */\n\nimport Command from '@ckeditor/ckeditor5-core/src/command/command';\nimport { isImage } from '../image/utils';\n\n/**\n * The image style command. It is used to apply different image styles.\n *\n * @extends module:core/command/command~Command\n */\nexport default class ImageStyleCommand extends Command {\n\t/**\n\t * Creates instance of the image style command. Each command instance is handling one style.\n\t *\n\t * @param {module:core/editor/editor~Editor} editor Editor instance.\n\t * @param {module:image/imagestyle/imagestyleengine~ImageStyleFormat} styles Style to apply by this command.\n\t */\n\tconstructor( editor, style ) {\n\t\tsuper( editor );\n\n\t\t/**\n\t\t * The current command value - `true` if style handled by the command is applied on currently selected image,\n\t\t * `false` otherwise.\n\t\t *\n\t\t * @readonly\n\t\t * @observable\n\t\t * @member {Boolean} #value\n\t\t */\n\t\tthis.set( 'value', false );\n\n\t\t/**\n\t\t * Style handled by this command.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:image/imagestyle/imagestyleengine~ImageStyleFormat} #style\n\t\t */\n\t\tthis.style = style;\n\n\t\t// Update current value and refresh state each time something change in model document.\n\t\tthis.listenTo( editor.document, 'changesDone', () => {\n\t\t\tthis._updateValue();\n\t\t\tthis.refreshState();\n\t\t} );\n\t}\n\n\t/**\n\t * Updates command's value.\n\t *\n\t * @private\n\t */\n\t_updateValue() {\n\t\tconst doc = this.editor.document;\n\t\tconst element = doc.selection.getSelectedElement();\n\n\t\tif ( !element ) {\n\t\t\tthis.value = false;\n\n\t\t\treturn;\n\t\t}\n\n\t\tif ( this.style.value === null ) {\n\t\t\tthis.value = !element.hasAttribute( 'imageStyle' );\n\t\t} else {\n\t\t\tthis.value = ( element.getAttribute( 'imageStyle' ) == this.style.value );\n\t\t}\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\t_checkEnabled() {\n\t\tconst element = this.editor.document.selection.getSelectedElement();\n\n\t\treturn isImage( element );\n\t}\n\n\t/**\n\t * Executes command.\n\t *\n\t * @protected\n\t * @param {Object} options\n\t * @param {module:engine/model/batch~Batch} [options.batch] Batch to collect all the change steps. New batch will be\n\t * created if this option is not set.\n\t */\n\t_doExecute( options = {} ) {\n\t\t// Stop if style is already applied.\n\t\tif ( this.value ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst editor = this.editor;\n\t\tconst doc = editor.document;\n\t\tconst selection = doc.selection;\n\t\tconst imageElement = selection.getSelectedElement();\n\n\t\tdoc.enqueueChanges( () => {\n\t\t\tconst batch = options.batch || doc.batch();\n\n\t\t\tbatch.setAttribute( imageElement, 'imageStyle', this.style.value );\n\t\t} );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-image/src/imagestyle/imagestylecommand.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module image/imagestyle/imagestyleengine\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport ImageStyleCommand from './imagestylecommand';\nimport ImageEngine from '../image/imageengine';\nimport { viewToModelStyleAttribute, modelToViewStyleAttribute } from './converters';\nimport fullSizeIcon from '@ckeditor/ckeditor5-core/theme/icons/object-center.svg';\nimport sideIcon from '@ckeditor/ckeditor5-core/theme/icons/object-right.svg';\n\n/**\n * The image style engine plugin. Sets default configuration, creates converters and registers\n * {@link module:image/imagestyle/imagestylecommand~ImageStyleCommand ImageStyleCommand}.\n *\n * @extends {module:core/plugin~Plugin}\n */\nexport default class ImageStyleEngine extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get requires() {\n\t\treturn [ ImageEngine ];\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tconst editor = this.editor;\n\t\tconst t = editor.t;\n\t\tconst doc = editor.document;\n\t\tconst schema = doc.schema;\n\t\tconst data = editor.data;\n\t\tconst editing = editor.editing;\n\n\t\t// Define default configuration.\n\t\teditor.config.define( 'image.styles', [\n\t\t\t// This option is equal to situation when no style is applied.\n\t\t\t{ name: 'imageStyleFull', title: t( 'Full size image' ), icon: fullSizeIcon, value: null },\n\n\t\t\t// This represents side image.\n\t\t\t{ name: 'imageStyleSide', title: t( 'Side image' ), icon: sideIcon, value: 'side', className: 'image-style-side' }\n\t\t] );\n\n\t\t// Get configuration.\n\t\tconst styles = editor.config.get( 'image.styles' );\n\n\t\t// Allow imageStyle attribute in image.\n\t\t// We could call it 'style' but https://github.com/ckeditor/ckeditor5-engine/issues/559.\n\t\tschema.allow( { name: 'image', attributes: 'imageStyle', inside: '$root' } );\n\n\t\t// Converters for imageStyle attribute from model to view.\n\t\tconst modelToViewConverter = modelToViewStyleAttribute( styles );\n\t\tediting.modelToView.on( 'addAttribute:imageStyle:image', modelToViewConverter );\n\t\tdata.modelToView.on( 'addAttribute:imageStyle:image', modelToViewConverter );\n\t\tediting.modelToView.on( 'changeAttribute:imageStyle:image', modelToViewConverter );\n\t\tdata.modelToView.on( 'changeAttribute:imageStyle:image', modelToViewConverter );\n\t\tediting.modelToView.on( 'removeAttribute:imageStyle:image', modelToViewConverter );\n\t\tdata.modelToView.on( 'removeAttribute:imageStyle:image', modelToViewConverter );\n\n\t\t// Converter for figure element from view to model.\n\t\tdata.viewToModel.on( 'element:figure', viewToModelStyleAttribute( styles ), { priority: 'low' } );\n\n\t\t// Register separate command for each style.\n\t\tfor ( let style of styles ) {\n\t\t\teditor.commands.set( style.name, new ImageStyleCommand( editor, style ) );\n\t\t}\n\t}\n}\n\n/**\n * Image style format descriptor.\n *\n *\timport fullIcon from 'path/to/icon.svg`;\n *\n *\tconst imageStyleFormat = {\n *\t\tname: 'fullSizeImage',\n *\t\tvalue: 'full',\n *\t\ticon: fullIcon,\n *\t\ttitle: `Full size image`,\n *\t\tclass: `image-full-size`\n *\t}\n *\n * @typedef {Object} module:image/imagestyle/imagestyleengine~ImageStyleFormat\n * @property {String} name Name of the style. It will be used to:\n * * register {@link module:core/command/command~Command command} which will apply this style,\n * * store style's button in editor's {@link module:ui/componentfactory~ComponentFactory ComponentFactory}.\n * @property {String} value Value used to store this style in model attribute.\n * When value is `null` style will be used as default one. Default style does not apply any CSS class to the view element.\n * @property {String} icon SVG icon representation to use when creating style's button.\n * @property {String} title Style's title.\n * @property {String} className CSS class used to represent style in view.\n */\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-image/src/imagestyle/imagestyleengine.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module image/imagetextalternative\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport ButtonView from '@ckeditor/ckeditor5-ui/src/button/buttonview';\nimport ImageTextAlternativeEngine from './imagetextalternative/imagetextalternativeengine';\nimport escPressHandler from '@ckeditor/ckeditor5-ui/src/bindings/escpresshandler';\nimport clickOutsideHandler from '@ckeditor/ckeditor5-ui/src/bindings/clickoutsidehandler';\nimport ImageToolbar from './imagetoolbar';\nimport TextAlternativeFormView from './imagetextalternative/ui/textalternativeformview';\nimport ImageBalloonPanel from './image/ui/imageballoonpanelview';\n\nimport textAlternativeIcon from '@ckeditor/ckeditor5-core/theme/icons/low-vision.svg';\nimport '../theme/imagetextalternative/theme.scss';\n\n/**\n * The image text alternative plugin.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class ImageTextAlternative extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get requires() {\n\t\treturn [ ImageTextAlternativeEngine ];\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tthis._createButton();\n\n\t\t// Push button to default image toolbar if the image toolbar was loaded.\n\t\tconst defaultImageToolbarConfig = this.editor.config.get( 'image.defaultToolbar' );\n\n\t\tif ( defaultImageToolbarConfig ) {\n\t\t\tif ( defaultImageToolbarConfig.length ) {\n\t\t\t\tdefaultImageToolbarConfig.push( '|' );\n\t\t\t}\n\n\t\t\tdefaultImageToolbarConfig.push( 'imageTextAlternative' );\n\t\t}\n\n\t\treturn this._createBalloonPanel().then( panel => {\n\t\t\t/**\n\t\t\t * Balloon panel containing text alternative change form.\n\t\t\t *\n\t\t\t * @member {module:image/ui/imageballoonpanel~ImageBalloonPanelView} #baloonPanel\n\t\t\t */\n\t\t\tthis.balloonPanel = panel;\n\n\t\t\t/**\n\t\t\t * Form containing textarea and buttons, used to change `alt` text value.\n\t\t\t *\n\t\t\t * @member {module:image/imagetextalternative/ui/textalternativeformview~TextAlternativeFormView} #form\n\t\t\t */\n\t\t\tthis.form = panel.content.get( 0 );\n\t\t} );\n\t}\n\n\t/**\n\t * Creates button showing text alternative change balloon panel and registers it in\n\t * editor's {@link module:ui/componentfactory~ComponentFactory ComponentFactory}.\n\t *\n\t * @private\n\t */\n\t_createButton() {\n\t\tconst editor = this.editor;\n\t\tconst command = editor.commands.get( 'imageTextAlternative' );\n\t\tconst t = editor.t;\n\n\t\teditor.ui.componentFactory.add( 'imageTextAlternative', ( locale ) => {\n\t\t\tconst view = new ButtonView( locale );\n\n\t\t\tview.set( {\n\t\t\t\tlabel: t( 'Change image text alternative' ),\n\t\t\t\ticon: textAlternativeIcon,\n\t\t\t\ttooltip: true\n\t\t\t} );\n\n\t\t\tview.bind( 'isEnabled' ).to( command, 'isEnabled' );\n\n\t\t\tthis.listenTo( view, 'execute', () => this._showBalloonPanel() );\n\n\t\t\treturn view;\n\t\t} );\n\t}\n\n\t/**\n\t * Creates balloon panel.\n\t *\n\t * @private\n\t * @return {Promise.<module:image/image/ui/imageballoonpanel~ImageBalloonPanelView>}\n\t */\n\t_createBalloonPanel() {\n\t\tconst editor = this.editor;\n\n\t\tconst panel = new ImageBalloonPanel( editor );\n\t\tconst form = new TextAlternativeFormView( editor.locale );\n\n\t\tthis.listenTo( form, 'submit', () => {\n\t\t\teditor.execute( 'imageTextAlternative', { newValue: form.lebeledInput.inputView.element.value } );\n\t\t\tthis._hideBalloonPanel();\n\t\t} );\n\n\t\t// If image toolbar is present - hide it when text alternative balloon is visible.\n\t\tconst imageToolbar = editor.plugins.get( ImageToolbar );\n\n\t\tif ( imageToolbar ) {\n\t\t\tthis.listenTo( panel, 'change:isVisible', () => {\n\t\t\t\tif ( panel.isVisible ) {\n\t\t\t\t\timageToolbar.hide();\n\t\t\t\t\timageToolbar.isEnabled = false;\n\t\t\t\t} else {\n\t\t\t\t\timageToolbar.show();\n\t\t\t\t\timageToolbar.isEnabled = true;\n\t\t\t\t}\n\t\t\t} );\n\t\t}\n\n\t\tthis.listenTo( form, 'cancel', () => this._hideBalloonPanel() );\n\n\t\t// Close on `ESC` press.\n\t\tescPressHandler( {\n\t\t\temitter: panel,\n\t\t\tactivator: () => panel.isVisible,\n\t\t\tcallback: () => this._hideBalloonPanel()\n\t\t} );\n\n\t\t// Close on click outside of balloon panel element.\n\t\tclickOutsideHandler( {\n\t\t\temitter: panel,\n\t\t\tactivator: () => panel.isVisible,\n\t\t\tcontextElement: panel.element,\n\t\t\tcallback: () => this._hideBalloonPanel()\n\t\t} );\n\n\t\treturn Promise.all( [\n\t\t\tpanel.content.add( form ),\n\t\t\teditor.ui.view.body.add( panel )\n\t\t] ).then( () => panel ) ;\n\t}\n\n\t/**\n\t * Shows the balloon panel.\n\t *\n\t * @private\n\t */\n\t_showBalloonPanel() {\n\t\tconst editor = this.editor;\n\t\tconst command = editor.commands.get( 'imageTextAlternative' );\n\t\tthis.form.lebeledInput.value = command.value || '';\n\t\tthis.balloonPanel.attach();\n\t\tthis.form.lebeledInput.select();\n\t}\n\n\t/**\n\t * Hides the balloon panel.\n\t *\n\t * @private\n\t */\n\t_hideBalloonPanel() {\n\t\tconst editor = this.editor;\n\t\tthis.balloonPanel.detach();\n\t\teditor.editing.view.focus();\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-image/src/imagetextalternative.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module image/imagelaternatetext/imagetextalternativecommand\n */\n\nimport Command from '@ckeditor/ckeditor5-core/src/command/command';\nimport { isImage } from '../image/utils';\n\n/**\n * The image text alternative command. It is used to change `alt` attribute on `image` elements.\n *\n * @extends module:core/command/command~Command\n */\nexport default class ImageTextAlternativeCommand extends Command {\n\t/**\n\t * @inheritDoc\n\t */\n\tconstructor( editor ) {\n\t\tsuper( editor );\n\t\t/**\n\t\t * The current command value - `false` if there is no `alt` attribute, otherwise contains string with `alt`\n\t\t * attribute value.\n\t\t *\n\t\t * @readonly\n\t\t * @observable\n\t\t * @member {String|Boolean} #value\n\t\t */\n\t\tthis.set( 'value', false );\n\n\t\t// Update current value and refresh state each time something change in model document.\n\t\tthis.listenTo( editor.document, 'changesDone', () => {\n\t\t\tthis._updateValue();\n\t\t\tthis.refreshState();\n\t\t} );\n\t}\n\n\t/**\n\t * Updates command's value.\n\t *\n\t * @private\n\t */\n\t_updateValue() {\n\t\tconst doc = this.editor.document;\n\t\tconst element = doc.selection.getSelectedElement();\n\n\t\tif ( isImage( element ) && element.hasAttribute( 'alt' ) ) {\n\t\t\tthis.value = element.getAttribute( 'alt' );\n\t\t} else {\n\t\t\tthis.value = false;\n\t\t}\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\t_checkEnabled() {\n\t\tconst element = this.editor.document.selection.getSelectedElement();\n\n\t\treturn isImage( element );\n\t}\n\n\t/**\n\t * Executes command.\n\t *\n\t * @protected\n\t * @param {Object} options\n\t * @param {String} options.newValue New value of `alt` attribute to set.\n\t * @param {module:engine/model/batch~Batch} [options.batch] Batch to collect all the change steps. New batch will be\n\t * created if this option is not set.\n\t */\n\t_doExecute( options ) {\n\t\tconst editor = this.editor;\n\t\tconst doc = editor.document;\n\t\tconst imageElement = doc.selection.getSelectedElement();\n\n\t\tdoc.enqueueChanges( () => {\n\t\t\tconst batch = options.batch || doc.batch();\n\n\t\t\tbatch.setAttribute( imageElement, 'alt', options.newValue );\n\t\t} );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-image/src/imagetextalternative/imagetextalternativecommand.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module image/imagetextalternative/imagetextalternativeengine\n */\n\nimport ImageTextAlternativeCommand from './imagetextalternativecommand';\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\n\n/**\n * The ImageTextAlternativeEngine plugin.\n * Registers `imageTextAlternative` command.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class ImageTextAlternativeEngine extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tthis.editor.commands.set( 'imageTextAlternative', new ImageTextAlternativeCommand( this.editor ) );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-image/src/imagetextalternative/imagetextalternativeengine.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module image/imagetextalternative/ui/imagetextalternativeformview\n */\n\nimport View from '@ckeditor/ckeditor5-ui/src/view';\nimport ButtonView from '@ckeditor/ckeditor5-ui/src/button/buttonview';\nimport Template from '@ckeditor/ckeditor5-ui/src/template';\nimport LabeledInputView from '@ckeditor/ckeditor5-ui/src/labeledinput/labeledinputview';\nimport InputTextView from '@ckeditor/ckeditor5-ui/src/inputtext/inputtextview';\nimport submitHandler from '@ckeditor/ckeditor5-ui/src/bindings/submithandler';\n\n/**\n * TextAlternativeFormView class.\n *\n * @extends module:ui/view~View\n */\nexport default class TextAlternativeFormView extends View {\n\t/**\n\t * @inheritDoc\n\t */\n\tconstructor( locale ) {\n\t\tsuper( locale );\n\n\t\tconst t = this.locale.t;\n\n\t\t/**\n\t\t * Text area with label.\n\t\t *\n\t\t * @member {module:ui/labeledinput/labeledinputview~LabeledInputView} #labeledTextarea\n\t\t */\n\t\tthis.lebeledInput = this._createLabeledInputView();\n\n\t\t/**\n\t\t * Button used to submit the form.\n\t\t *\n\t\t * @member {module:ui/button/buttonview~ButtonView} #saveButtonView\n\t\t */\n\t\tthis.saveButtonView = this._createButton( t( 'Save' ) );\n\t\tthis.saveButtonView.type = 'submit';\n\n\t\t/**\n\t\t * Button used to cancel the form.\n\t\t *\n\t\t * @member {module:ui/button/buttonview~ButtonView} #cancelButtonView\n\t\t */\n\t\tthis.cancelButtonView = this._createButton( t( 'Cancel' ), 'cancel' );\n\n\t\tTemplate.extend( this.saveButtonView.template, {\n\t\t\tattributes: {\n\t\t\t\tclass: [\n\t\t\t\t\t'ck-button-action'\n\t\t\t\t]\n\t\t\t}\n\t\t} );\n\n\t\tthis.template = new Template( {\n\t\t\ttag: 'form',\n\n\t\t\tattributes: {\n\t\t\t\tclass: [\n\t\t\t\t\t'cke-text-alternative-form',\n\t\t\t\t]\n\t\t\t},\n\n\t\t\tchildren: [\n\t\t\t\tthis.lebeledInput,\n\t\t\t\t{\n\t\t\t\t\ttag: 'div',\n\n\t\t\t\t\tattributes: {\n\t\t\t\t\t\tclass: [\n\t\t\t\t\t\t\t'cke-text-alternative-form__actions'\n\t\t\t\t\t\t]\n\t\t\t\t\t},\n\n\t\t\t\t\tchildren: [\n\t\t\t\t\t\tthis.saveButtonView,\n\t\t\t\t\t\tthis.cancelButtonView\n\t\t\t\t\t]\n\t\t\t\t}\n\t\t\t]\n\t\t} );\n\n\t\tsubmitHandler( {\n\t\t\tview: this\n\t\t} );\n\t}\n\n\t/**\n\t * Creates button view.\n\t *\n\t * @private\n\t * @param {String} label Button label\n\t * @param {String} [eventName] Event name which ButtonView#execute event will be delegated to.\n\t * @returns {module:ui/button/buttonview~ButtonView} Button view instance.\n\t */\n\t_createButton( label, eventName ) {\n\t\tconst button = new ButtonView( this.locale );\n\n\t\tbutton.label = label;\n\t\tbutton.withText = true;\n\n\t\tif ( eventName ) {\n\t\t\tbutton.delegate( 'execute' ).to( this, eventName );\n\t\t}\n\n\t\treturn button;\n\t}\n\n\t/**\n\t * Creates input with label.\n\t *\n\t * @private\n\t * @return {module:ui/labeledinput/labeledinputview~LabeledInputView}\n\t */\n\t_createLabeledInputView() {\n\t\tconst t = this.locale.t;\n\t\tconst labeledInput = new LabeledInputView( this.locale, InputTextView );\n\t\tlabeledInput.label = t( 'Text alternative' );\n\n\t\treturn labeledInput;\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-image/src/imagetextalternative/ui/textalternativeformview.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module image/widget/widget\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport WidgetEngine from './widgetengine';\nimport MouseObserver from '@ckeditor/ckeditor5-engine/src/view/observer/mouseobserver';\nimport ModelRange from '@ckeditor/ckeditor5-engine/src/model/range';\nimport ModelSelection from '@ckeditor/ckeditor5-engine/src/model/selection';\nimport ModelElement from '@ckeditor/ckeditor5-engine/src/model/element';\nimport ViewEditableElement from '@ckeditor/ckeditor5-engine/src/view/editableelement';\nimport RootEditableElement from '@ckeditor/ckeditor5-engine/src/view/rooteditableelement';\nimport { isWidget } from './utils';\nimport { keyCodes } from '@ckeditor/ckeditor5-utils/src/keyboard';\n\n/**\n * The widget plugin.\n * Adds default {@link module:engine/view/document~Document#event:mousedown mousedown} handling on widget elements.\n *\n * @extends module:core/plugin~Plugin.\n */\nexport default class Widget extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get requires() {\n\t\treturn [ WidgetEngine ];\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tconst viewDocument = this.editor.editing.view;\n\n\t\t// If mouse down is pressed on widget - create selection over whole widget.\n\t\tviewDocument.addObserver( MouseObserver );\n\t\tthis.listenTo( viewDocument, 'mousedown', ( ...args ) => this._onMousedown( ...args ) );\n\n\t\t// Handle custom keydown behaviour.\n\t\tthis.listenTo( viewDocument, 'keydown', ( ...args ) => this._onKeydown( ...args ), { priority: 'high' } );\n\t}\n\n\t/**\n\t * Handles {@link module:engine/view/document~Document#event:mousedown mousedown} events on widget elements.\n\t *\n\t * @private\n\t * @param {module:utils/eventinfo~EventInfo} eventInfo\n\t * @param {module:engine/view/observer/domeventdata~DomEventData} domEventData\n\t */\n\t_onMousedown( eventInfo, domEventData ) {\n\t\tconst editor = this.editor;\n\t\tconst viewDocument = editor.editing.view;\n\t\tlet element = domEventData.target;\n\n\t\t// Do nothing if inside nested editable.\n\t\tif ( isInsideNestedEditable( element ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// If target is not a widget element - check if one of the ancestors is.\n\t\tif ( !isWidget( element ) ) {\n\t\t\telement = element.findAncestor( isWidget );\n\n\t\t\tif ( !element ) {\n\t\t\t\treturn;\n\t\t\t}\n\t\t}\n\n\t\tdomEventData.preventDefault();\n\n\t\t// Focus editor if is not focused already.\n\t\tif ( !viewDocument.isFocused ) {\n\t\t\tviewDocument.focus();\n\t\t}\n\n\t\t// Create model selection over widget.\n\t\tconst modelElement = editor.editing.mapper.toModelElement( element );\n\n\t\teditor.document.enqueueChanges( ( ) => {\n\t\t\tthis._setSelectionOverElement( modelElement );\n\t\t} );\n\t}\n\n\t/**\n\t * Handles {@link module:engine/view/document~Document#event:keydown keydown} events.\n\t *\n\t * @private\n\t * @param {module:utils/eventinfo~EventInfo} eventInfo\n\t * @param {module:engine/view/observer/domeventdata~DomEventData} domEventData\n\t */\n\t_onKeydown( eventInfo, domEventData  ) {\n\t\tconst keyCode = domEventData.keyCode;\n\t\tconst isForward = keyCode == keyCodes.delete || keyCode == keyCodes.arrowdown || keyCode == keyCodes.arrowright;\n\n\t\t// Checks if delete/backspace or arrow keys were handled and then prevents default event behaviour and stops\n\t\t// event propagation.\n\t\tif ( ( isDeleteKeyCode( keyCode ) && this._handleDelete( isForward ) ) ||\n\t\t\t( isArrowKeyCode( keyCode ) && this._handleArrowKeys( isForward ) ) ) {\n\t\t\tdomEventData.preventDefault();\n\t\t\teventInfo.stop();\n\t\t}\n\t}\n\n\t/**\n\t * Handles delete keys: backspace and delete.\n\t *\n\t * @private\n\t * @param {Boolean} isForward Set to true if delete was performed in forward direction.\n\t * @returns {Boolean|undefined} Returns `true` if keys were handled correctly.\n\t */\n\t_handleDelete( isForward ) {\n\t\tconst modelDocument = this.editor.document;\n\t\tconst modelSelection = modelDocument.selection;\n\n\t\t// Do nothing on non-collapsed selection.\n\t\tif ( !modelSelection.isCollapsed ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst objectElement = this._getObjectElementNextToSelection( isForward );\n\n\t\tif ( objectElement ) {\n\t\t\tmodelDocument.enqueueChanges( () => {\n\t\t\t\t// Remove previous element if empty.\n\t\t\t\tconst previousNode = modelSelection.anchor.parent;\n\n\t\t\t\tif ( previousNode.isEmpty ) {\n\t\t\t\t\tconst batch = modelDocument.batch();\n\t\t\t\t\tbatch.remove( previousNode );\n\t\t\t\t}\n\n\t\t\t\tthis._setSelectionOverElement( objectElement );\n\t\t\t} );\n\n\t\t\treturn true;\n\t\t}\n\t}\n\n\t/**\n\t * Handles arrow keys.\n\t *\n\t * @param {Boolean} isForward Set to true if arrow key should be handled in forward direction.\n\t * @returns {Boolean|undefined} Returns `true` if keys were handled correctly.\n\t */\n\t_handleArrowKeys( isForward ) {\n\t\tconst modelDocument = this.editor.document;\n\t\tconst schema = modelDocument.schema;\n\t\tconst modelSelection = modelDocument.selection;\n\t\tconst objectElement = modelSelection.getSelectedElement();\n\n\t\t// if object element is selected.\n\t\tif ( objectElement && schema.objects.has( objectElement.name ) ) {\n\t\t\tconst position = isForward ? modelSelection.getLastPosition() : modelSelection.getFirstPosition();\n\t\t\tconst newRange = modelDocument.getNearestSelectionRange( position, isForward ? 'forward' : 'backward' );\n\n\t\t\tif ( newRange ) {\n\t\t\t\tmodelDocument.enqueueChanges( () => {\n\t\t\t\t\tmodelSelection.setRanges( [ newRange ] );\n\t\t\t\t} );\n\t\t\t}\n\n\t\t\treturn true;\n\t\t}\n\n\t\t// If selection is next to object element.\n\t\t// Return if not collapsed.\n\t\tif ( !modelSelection.isCollapsed ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst objectElement2 = this._getObjectElementNextToSelection( isForward );\n\n\t\tif ( objectElement2 instanceof ModelElement && modelDocument.schema.objects.has( objectElement2.name ) ) {\n\t\t\tmodelDocument.enqueueChanges( () => {\n\t\t\t\tthis._setSelectionOverElement( objectElement2 );\n\t\t\t} );\n\n\t\t\treturn true;\n\t\t}\n\t}\n\n\t/**\n\t * Sets {@link module:engine/model/selection~Selection document's selection} over given element.\n\t *\n\t * @private\n\t * @param {module:engine/model/element~Element} element\n\t */\n\t_setSelectionOverElement( element ) {\n\t\tthis.editor.document.selection.setRanges( [ ModelRange.createOn( element ) ] );\n\t}\n\n\t/**\n\t * Checks if {@link module:engine/model/element~Element element} placed next to the current\n\t * {@link module:engine/model/selection~Selection model selection} exists and is marked in\n\t * {@link module:engine/model/schema~Schema schema} as `object`.\n\t *\n\t * @private\n\t * @param {Boolean} forward Direction of checking.\n\t * @returns {module:engine/model/element~Element|null}\n\t */\n\t_getObjectElementNextToSelection( forward ) {\n\t\tconst modelDocument = this.editor.document;\n\t\tconst schema = modelDocument.schema;\n\t\tconst modelSelection = modelDocument.selection;\n\t\tconst dataController = this.editor.data;\n\n\t\t// Clone current selection to use it as a probe. We must leave default selection as it is so it can return\n\t\t// to its current state after undo.\n\t\tconst probe = ModelSelection.createFromSelection( modelSelection );\n\t\tdataController.modifySelection( probe, { direction: forward ? 'forward' : 'backward' } );\n\t\tconst objectElement = forward ? probe.focus.nodeBefore : probe.focus.nodeAfter;\n\n\t\tif ( objectElement instanceof ModelElement && schema.objects.has( objectElement.name ) ) {\n\t\t\treturn objectElement;\n\t\t}\n\n\t\treturn null;\n\t}\n}\n\n// Returns 'true' if provided key code represents one of the arrow keys.\n//\n// @param {Number} keyCode\n// @returns {Boolean}\nfunction isArrowKeyCode( keyCode ) {\n\treturn keyCode == keyCodes.arrowright ||\n\t\tkeyCode == keyCodes.arrowleft ||\n\t\tkeyCode == keyCodes.arrowup ||\n\t\tkeyCode == keyCodes.arrowdown;\n}\n\n//Returns 'true' if provided key code represents one of the delete keys: delete or backspace.\n//\n//@param {Number} keyCode\n//@returns {Boolean}\nfunction isDeleteKeyCode( keyCode ) {\n\treturn keyCode == keyCodes.delete || keyCode == keyCodes.backspace;\n}\n\n// Returns `true` when element is a nested editable or is placed inside one.\n//\n// @param {module:engine/view/element~Element}\n// @returns {Boolean}\nfunction isInsideNestedEditable( element ) {\n\twhile ( element ) {\n\t\tif ( element instanceof ViewEditableElement && !( element instanceof RootEditableElement ) ) {\n\t\t\treturn true;\n\t\t}\n\n\t\telement = element.parent;\n\t}\n\n\treturn false;\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-image/src/widget/widget.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module link/link\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport ClickObserver from '@ckeditor/ckeditor5-engine/src/view/observer/clickobserver';\nimport LinkEngine from './linkengine';\nimport LinkElement from './linkelement';\n\nimport clickOutsideHandler from '@ckeditor/ckeditor5-ui/src/bindings/clickoutsidehandler';\n\nimport ButtonView from '@ckeditor/ckeditor5-ui/src/button/buttonview';\nimport BalloonPanelView from '@ckeditor/ckeditor5-ui/src/balloonpanel/balloonpanelview';\n\nimport LinkFormView from './ui/linkformview';\n\nimport linkIcon from '../theme/icons/link.svg';\nimport unlinkIcon from '../theme/icons/unlink.svg';\n\nimport '../theme/theme.scss';\n\n/**\n * The link feature. It introduces the Link and Unlink buttons and the <kbd>Ctrl+K</kbd> keystroke.\n *\n * It uses the {@link module:link/linkengine~LinkEngine link engine feature}.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class Link extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get requires() {\n\t\treturn [ LinkEngine ];\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tthis.editor.editing.view.addObserver( ClickObserver );\n\n\t\t/**\n\t\t * Balloon panel view to display the main UI.\n\t\t *\n\t\t * @member {module:link/ui/balloonpanel~BalloonPanelView}\n\t\t */\n\t\tthis.balloonPanelView = this._createBalloonPanel();\n\n\t\t/**\n\t\t * The form view inside {@link #balloonPanelView}.\n\t\t *\n\t\t * @member {module:link/ui/linkformview~LinkFormView}\n\t\t */\n\t\tthis.formView = this._createForm();\n\n\t\t// Create toolbar buttons.\n\t\tthis._createToolbarLinkButton();\n\t\tthis._createToolbarUnlinkButton();\n\t}\n\n\t/**\n\t * Creates a toolbar link button. Clicking this button will show\n\t * {@link #balloonPanelView} attached to the selection.\n\t *\n\t * @private\n\t */\n\t_createToolbarLinkButton() {\n\t\tconst editor = this.editor;\n\t\tconst linkCommand = editor.commands.get( 'link' );\n\t\tconst t = editor.t;\n\n\t\t// Handle `Ctrl+K` keystroke and show panel.\n\t\teditor.keystrokes.set( 'CTRL+K', () => this._showPanel() );\n\n\t\teditor.ui.componentFactory.add( 'link', ( locale ) => {\n\t\t\tconst button = new ButtonView( locale );\n\n\t\t\tbutton.isEnabled = true;\n\t\t\tbutton.label = t( 'Link' );\n\t\t\tbutton.icon = linkIcon;\n\t\t\tbutton.keystroke = 'CTRL+K';\n\t\t\tbutton.tooltip = true;\n\n\t\t\t// Bind button to the command.\n\t\t\tbutton.bind( 'isEnabled' ).to( linkCommand, 'isEnabled' );\n\n\t\t\t// Show the panel on button click.\n\t\t\tthis.listenTo( button, 'execute', () => this._showPanel() );\n\n\t\t\treturn button;\n\t\t} );\n\t}\n\n\t/**\n\t * Creates a toolbar unlink button. Clicking this button will unlink\n\t * the selected link.\n\t *\n\t * @private\n\t */\n\t_createToolbarUnlinkButton() {\n\t\tconst editor = this.editor;\n\t\tconst t = editor.t;\n\t\tconst unlinkCommand = editor.commands.get( 'unlink' );\n\n\t\teditor.ui.componentFactory.add( 'unlink', ( locale ) => {\n\t\t\tconst button = new ButtonView( locale );\n\n\t\t\tbutton.isEnabled = false;\n\t\t\tbutton.label = t( 'Unlink' );\n\t\t\tbutton.icon = unlinkIcon;\n\t\t\tbutton.tooltip = true;\n\n\t\t\t// Bind button to the command.\n\t\t\tbutton.bind( 'isEnabled' ).to( unlinkCommand, 'isEnabled' );\n\n\t\t\t// Execute unlink command and hide panel, if open on button click.\n\t\t\tthis.listenTo( button, 'execute', () => editor.execute( 'unlink' ) );\n\n\t\t\treturn button;\n\t\t} );\n\t}\n\n\t/**\n\t * Creates the {@link module:ui/balloonpanel/balloonpanelview~BalloonPanelView} instance.\n\t *\n\t * @private\n\t * @returns {module:ui/balloonpanel/balloonpanelview~BalloonPanelView} Link balloon panel instance.\n\t */\n\t_createBalloonPanel() {\n\t\tconst editor = this.editor;\n\t\tconst viewDocument = editor.editing.view;\n\n\t\t// Create the balloon panel instance.\n\t\tconst balloonPanelView = new BalloonPanelView( editor.locale );\n\t\tballoonPanelView.maxWidth = 300;\n\n\t\t// Add balloonPanel.view#element to FocusTracker.\n\t\t// @TODO: Do it automatically ckeditor5-core#23\n\t\teditor.ui.focusTracker.add( balloonPanelView.element );\n\n\t\t// Handle click on view document and show panel when selection is placed inside the link element.\n\t\t// Keep panel open until selection will be inside the same link element.\n\t\tthis.listenTo( viewDocument, 'click', () => {\n\t\t\tconst viewSelection = viewDocument.selection;\n\t\t\tconst parentLink = getPositionParentLink( viewSelection.getFirstPosition() );\n\n\t\t\tif ( viewSelection.isCollapsed && parentLink ) {\n\t\t\t\tthis._attachPanelToElement();\n\n\t\t\t\tthis.listenTo( viewDocument, 'render', () => {\n\t\t\t\t\tconst currentParentLink = getPositionParentLink( viewSelection.getFirstPosition() );\n\n\t\t\t\t\tif ( !viewSelection.isCollapsed || parentLink !== currentParentLink ) {\n\t\t\t\t\t\tthis._hidePanel();\n\t\t\t\t\t} else {\n\t\t\t\t\t\tthis._attachPanelToElement( parentLink );\n\t\t\t\t\t}\n\t\t\t\t} );\n\n\t\t\t\tthis.listenTo( balloonPanelView, 'change:isVisible', () => this.stopListening( viewDocument, 'render' ) );\n\t\t\t}\n\t\t} );\n\n\t\t// Focus the form if balloon panel is open and tab key has been pressed.\n\t\teditor.keystrokes.set( 'Tab', ( data, cancel ) => {\n\t\t\tif ( balloonPanelView.isVisible && !this.formView.focusTracker.isFocused ) {\n\t\t\t\tthis.formView.focus();\n\t\t\t\tcancel();\n\t\t\t}\n\t\t} );\n\n\t\t// Close the panel on esc key press when editable has focus.\n\t\teditor.keystrokes.set( 'Esc', ( data, cancel ) => {\n\t\t\tif ( balloonPanelView.isVisible ) {\n\t\t\t\tthis._hidePanel( true );\n\t\t\t\tcancel();\n\t\t\t}\n\t\t} );\n\n\t\t// Close on click outside of balloon panel element.\n\t\tclickOutsideHandler( {\n\t\t\temitter: balloonPanelView,\n\t\t\tactivator: () => balloonPanelView.isVisible,\n\t\t\tcontextElement: balloonPanelView.element,\n\t\t\tcallback: () => this._hidePanel()\n\t\t} );\n\n\t\teditor.ui.view.body.add( balloonPanelView );\n\n\t\treturn balloonPanelView;\n\t}\n\n\t/**\n\t * Creates the {@link module:link/ui/linkformview~LinkFormView} instance.\n\t *\n\t * @private\n\t * @returns {module:link/ui/linkformview~LinkFormView} Link form instance.\n\t */\n\t_createForm() {\n\t\tconst editor = this.editor;\n\t\tconst formView = new LinkFormView( editor.locale );\n\n\t\tformView.urlInputView.bind( 'value' ).to( editor.commands.get( 'link' ), 'value' );\n\n\t\t// Execute link command after clicking on formView `Save` button.\n\t\tthis.listenTo( formView, 'submit', () => {\n\t\t\teditor.execute( 'link', formView.urlInputView.inputView.element.value );\n\t\t\tthis._hidePanel( true );\n\t\t} );\n\n\t\t// Execute unlink command after clicking on formView `Unlink` button.\n\t\tthis.listenTo( formView, 'unlink', () => {\n\t\t\teditor.execute( 'unlink' );\n\t\t\tthis._hidePanel( true );\n\t\t} );\n\n\t\t// Close the panel on esc key press when the form has focus.\n\t\tformView.keystrokes.set( 'Esc', ( data, cancel ) => {\n\t\t\tthis._hidePanel( true );\n\t\t\tcancel();\n\t\t} );\n\n\t\t// Hide balloon panel after clicking on formView `Cancel` button.\n\t\tthis.listenTo( formView, 'cancel', () => this._hidePanel( true ) );\n\n\t\tthis.balloonPanelView.content.add( formView );\n\n\t\treturn formView;\n\t}\n\n\t/**\n\t * Shows {@link #balloonPanelView link balloon panel} and attach to target element.\n\t * If selection is collapsed and is placed inside link element, then panel will be attached\n\t * to whole link element, otherwise will be attached to the selection.\n\t *\n\t * @private\n\t * @param {module:link/linkelement~LinkElement} [parentLink] Target element.\n\t */\n\t_attachPanelToElement( parentLink ) {\n\t\tconst viewDocument = this.editor.editing.view;\n\t\tconst targetLink = parentLink || getPositionParentLink( viewDocument.selection.getFirstPosition() );\n\n\t\tconst target = targetLink ?\n\t\t\t\t// When selection is inside link element, then attach panel to this element.\n\t\t\t\tviewDocument.domConverter.getCorrespondingDomElement( targetLink )\n\t\t\t:\n\t\t\t\t// Otherwise attach panel to the selection.\n\t\t\t\tviewDocument.domConverter.viewRangeToDom( viewDocument.selection.getFirstRange() );\n\n\t\tthis.balloonPanelView.attachTo( {\n\t\t\ttarget,\n\t\t\tlimiter: viewDocument.domConverter.getCorrespondingDomElement( viewDocument.selection.editableElement )\n\t\t} );\n\t}\n\n\t/**\n\t * Hides {@link #balloonPanelView balloon panel view}.\n\t *\n\t * @private\n\t * @param {Boolean} [focusEditable=false] When `true` then editable focus will be restored on panel hide.\n\t */\n\t_hidePanel( focusEditable ) {\n\t\tthis.balloonPanelView.hide();\n\n\t\tif ( focusEditable ) {\n\t\t\tthis.editor.editing.view.focus();\n\t\t}\n\t}\n\n\t/**\n\t * Shows {@link #balloonPanelView balloon panel view}.\n\t *\n\t * @private\n\t */\n\t_showPanel() {\n\t\tthis._attachPanelToElement();\n\t\tthis.formView.urlInputView.select();\n\t}\n}\n\n// Try to find if one of the position parent ancestors is a LinkElement,\n// if yes return this element.\n//\n// @private\n// @param {engine.view.Position} position\n// @returns {module:link/linkelement~LinkElement|null}\nfunction getPositionParentLink( position ) {\n\treturn position.parent.getAncestors().find( ( ancestor ) => ancestor instanceof LinkElement );\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-link/src/link.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module link/linkcommand\n */\n\nimport Command from '@ckeditor/ckeditor5-core/src/command/command';\nimport Text from '@ckeditor/ckeditor5-engine/src/model/text';\nimport Range from '@ckeditor/ckeditor5-engine/src/model/range';\nimport getSchemaValidRanges from '@ckeditor/ckeditor5-core/src/command/helpers/getschemavalidranges';\nimport isAttributeAllowedInSelection from '@ckeditor/ckeditor5-core/src/command/helpers/isattributeallowedinselection';\nimport findLinkRange from './findlinkrange';\n\n/**\n * The link command. It is used by the {@link module:link/link~Link link feature}.\n *\n * @extends module:core/command/command~Command\n */\nexport default class LinkCommand extends Command {\n\t/**\n\t * @see module:core/command/command~Command\n\t * @param {module:core/editor/editor~Editor} editor\n\t */\n\tconstructor( editor ) {\n\t\tsuper( editor );\n\n\t\t/**\n\t\t * Currently selected `linkHref` attribute value.\n\t\t *\n\t\t * @observable\n\t\t * @member {Boolean} module:core/command/toggleattributecommand~ToggleAttributeCommand#value\n\t\t */\n\t\tthis.set( 'value', undefined );\n\n\t\tthis.listenTo( this.editor.document.selection, 'change:attribute', () => {\n\t\t\tthis.value = this.editor.document.selection.getAttribute( 'linkHref' );\n\t\t} );\n\t}\n\n\t/**\n\t * Checks if {@link module:engine/model/document~Document#schema} allows to create attribute in {@link\n\t * module:engine/model/document~Document#selection}\n\t *\n\t * @protected\n\t * @returns {Boolean}\n\t */\n\t_checkEnabled() {\n\t\tconst document = this.editor.document;\n\n\t\treturn isAttributeAllowedInSelection( 'linkHref', document.selection, document.schema );\n\t}\n\n\t/**\n\t * Executes the command.\n\t *\n\t * When selection is non-collapsed, then `linkHref` attribute will be applied to nodes inside selection, but only to\n\t * those nodes where `linkHref` attribute is allowed (disallowed nodes will be omitted).\n\t *\n\t * When selection is collapsed and is not inside text with `linkHref` attribute, then new {@link module:engine/model/text~Text Text node}\n\t * with\n\t * `linkHref` attribute will be inserted in place of caret, but only if such an element is allowed in this place. `_data` of\n\t * the inserted text will equal `href` parameter. Selection will be updated to wrap just inserted text node.\n\t *\n\t * When selection is collapsed and inside text with `linkHref` attribute, the attribute value will be updated.\n\t *\n\t * @protected\n\t * @param {String} href Link destination.\n\t */\n\t_doExecute( href ) {\n\t\tconst document = this.editor.document;\n\t\tconst selection = document.selection;\n\n\t\tdocument.enqueueChanges( () => {\n\t\t\t// Keep it as one undo step.\n\t\t\tconst batch = document.batch();\n\n\t\t\t// If selection is collapsed then update selected link or insert new one at the place of caret.\n\t\t\tif ( selection.isCollapsed ) {\n\t\t\t\tconst position = selection.getFirstPosition();\n\t\t\t\tconst parent = position.parent;\n\n\t\t\t\t// When selection is inside text with `linkHref` attribute.\n\t\t\t\tif ( selection.hasAttribute( 'linkHref' ) ) {\n\t\t\t\t\t// Then update `linkHref` value.\n\t\t\t\t\tconst linkRange = findLinkRange( selection.getFirstPosition(), selection.getAttribute( 'linkHref' ) );\n\n\t\t\t\t\tbatch.setAttribute( linkRange, 'linkHref', href );\n\n\t\t\t\t\t// Create new range wrapping changed link.\n\t\t\t\t\tselection.setRanges( [ linkRange ] );\n\t\t\t\t}\n\t\t\t\t// If not then insert text node with `linkHref` attribute in place of caret.\n\t\t\t\telse if ( document.schema.check( { name: '$text', attributes: 'linkHref', inside: parent.name } ) ) {\n\t\t\t\t\tconst node = new Text( href, { linkHref: href } );\n\n\t\t\t\t\tbatch.insert( position, node );\n\n\t\t\t\t\t// Create new range wrapping created node.\n\t\t\t\t\tselection.setRanges( [ Range.createOn( node ) ] );\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\t// If selection has non-collapsed ranges, we change attribute on nodes inside those ranges\n\t\t\t\t// omitting nodes where `linkHref` attribute is disallowed.\n\t\t\t\tconst ranges = getSchemaValidRanges( 'linkHref', selection.getRanges(), document.schema );\n\n\t\t\t\tfor ( let range of ranges ) {\n\t\t\t\t\tbatch.setAttribute( range, 'linkHref', href );\n\t\t\t\t}\n\t\t\t}\n\t\t} );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-link/src/linkcommand.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module link/linkengine\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport buildModelConverter from '@ckeditor/ckeditor5-engine/src/conversion/buildmodelconverter';\nimport buildViewConverter from '@ckeditor/ckeditor5-engine/src/conversion/buildviewconverter';\nimport LinkElement from './linkelement';\nimport LinkCommand from './linkcommand';\nimport UnlinkCommand from './unlinkcommand';\n\n/**\n * The link engine feature.\n *\n * It introduces the `linkHref=\"url\"` attribute in the model which renders to the view as a `<a href=\"url\">` element.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class LinkEngine extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tconst editor = this.editor;\n\t\tconst data = editor.data;\n\t\tconst editing = editor.editing;\n\n\t\t// Allow link attribute on all inline nodes.\n\t\teditor.document.schema.allow( { name: '$inline', attributes: 'linkHref' } );\n\n\t\t// Build converter from model to view for data and editing pipelines.\n\t\tbuildModelConverter().for( data.modelToView, editing.modelToView )\n\t\t\t.fromAttribute( 'linkHref' )\n\t\t\t.toElement( ( linkHref ) => new LinkElement( 'a', { href: linkHref } ) );\n\n\t\t// Build converter from view to model for data pipeline.\n\t\tbuildViewConverter().for( data.viewToModel )\n\t\t\t.fromElement( 'a' )\n\t\t\t.toAttribute( ( viewElement ) => ( {\n\t\t\t\tkey: 'linkHref',\n\t\t\t\tvalue: viewElement.getAttribute( 'href' )\n\t\t\t} ) );\n\n\t\t// Create linking commands.\n\t\teditor.commands.set( 'link', new LinkCommand( editor ) );\n\t\teditor.commands.set( 'unlink', new UnlinkCommand( editor ) );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-link/src/linkengine.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module link/ui/linkformview\n */\n\nimport View from '@ckeditor/ckeditor5-ui/src/view';\nimport Template from '@ckeditor/ckeditor5-ui/src/template';\nimport ViewCollection from '@ckeditor/ckeditor5-ui/src/viewcollection';\n\nimport ButtonView from '@ckeditor/ckeditor5-ui/src/button/buttonview';\nimport LabeledInputView from '@ckeditor/ckeditor5-ui/src/labeledinput/labeledinputview';\nimport InputTextView from '@ckeditor/ckeditor5-ui/src/inputtext/inputtextview';\n\nimport submitHandler from '@ckeditor/ckeditor5-ui/src/bindings/submithandler';\nimport FocusTracker from '@ckeditor/ckeditor5-utils/src/focustracker';\nimport FocusCycler from '@ckeditor/ckeditor5-ui/src/focuscycler';\nimport KeystrokeHandler from '@ckeditor/ckeditor5-utils/src/keystrokehandler';\n\n/**\n * The link form view controller class.\n *\n * See {@link module:link/ui/linkformview~LinkFormView}.\n *\n * @extends module:ui/view~View\n */\nexport default class LinkFormView extends View {\n\t/**\n\t * @inheritDoc\n\t */\n\tconstructor( locale ) {\n\t\tsuper( locale );\n\n\t\tconst t = locale.t;\n\n\t\t/**\n\t\t * Tracks information about DOM focus in the form.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:utils/focustracker~FocusTracker}\n\t\t */\n\t\tthis.focusTracker = new FocusTracker();\n\n\t\t/**\n\t\t * Instance of the {@link module:core/keystrokehandler~KeystrokeHandler}.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:core/keystrokehandler~KeystrokeHandler}\n\t\t */\n\t\tthis.keystrokes = new KeystrokeHandler();\n\n\t\t/**\n\t\t * The url input view.\n\t\t *\n\t\t * @member {module:ui/labeledinput/labeledinputview~LabeledInputView}\n\t\t */\n\t\tthis.urlInputView = this._createUrlInput();\n\n\t\t/**\n\t\t * The save button view.\n\t\t *\n\t\t * @member {module:ui/button/buttonview~ButtonView}\n\t\t */\n\t\tthis.saveButtonView = this._createButton( t( 'Save' ) );\n\t\tthis.saveButtonView.type = 'submit';\n\n\t\t/**\n\t\t * The cancel button view.\n\t\t *\n\t\t * @member {module:ui/button/buttonview~ButtonView}\n\t\t */\n\t\tthis.cancelButtonView = this._createButton( t( 'Cancel' ), 'cancel' );\n\n\t\t/**\n\t\t * The unlink button view.\n\t\t *\n\t\t * @member {module:ui/button/buttonview~ButtonView}\n\t\t */\n\t\tthis.unlinkButtonView = this._createButton( t( 'Unlink' ), 'unlink' );\n\n\t\t/**\n\t\t * A collection of views which can be focused in the form.\n\t\t *\n\t\t * @readonly\n\t\t * @protected\n\t\t * @member {module:ui/viewcollection~ViewCollection}\n\t\t */\n\t\tthis._focusables = new ViewCollection();\n\n\t\t/**\n\t\t * Helps cycling over {@link #_focusables} in the form.\n\t\t *\n\t\t * @readonly\n\t\t * @protected\n\t\t * @member {module:ui/focuscycler~FocusCycler}\n\t\t */\n\t\tthis._focusCycler = new FocusCycler( {\n\t\t\tfocusables: this._focusables,\n\t\t\tfocusTracker: this.focusTracker,\n\t\t\tkeystrokeHandler: this.keystrokes,\n\t\t\tactions: {\n\t\t\t\t// Navigate form fields backwards using the shift + tab keystroke.\n\t\t\t\tfocusPrevious: 'shift + tab',\n\n\t\t\t\t// Navigate form fields forwards using the tab key.\n\t\t\t\tfocusNext: 'tab'\n\t\t\t}\n\t\t} );\n\n\t\tTemplate.extend( this.saveButtonView.template, {\n\t\t\tattributes: {\n\t\t\t\tclass: [\n\t\t\t\t\t'ck-button-action'\n\t\t\t\t]\n\t\t\t}\n\t\t} );\n\n\t\tthis.template = new Template( {\n\t\t\ttag: 'form',\n\n\t\t\tattributes: {\n\t\t\t\tclass: [\n\t\t\t\t\t'ck-link-form',\n\t\t\t\t]\n\t\t\t},\n\n\t\t\tchildren: [\n\t\t\t\tthis.urlInputView,\n\t\t\t\t{\n\t\t\t\t\ttag: 'div',\n\n\t\t\t\t\tattributes: {\n\t\t\t\t\t\tclass: [\n\t\t\t\t\t\t\t'ck-link-form__actions'\n\t\t\t\t\t\t]\n\t\t\t\t\t},\n\n\t\t\t\t\tchildren: [\n\t\t\t\t\t\tthis.saveButtonView,\n\t\t\t\t\t\tthis.cancelButtonView,\n\t\t\t\t\t\tthis.unlinkButtonView\n\t\t\t\t\t]\n\t\t\t\t}\n\t\t\t]\n\t\t} );\n\n\t\tsubmitHandler( {\n\t\t\tview: this\n\t\t} );\n\n\t\tconst childViews = [\n\t\t\tthis.urlInputView,\n\t\t\tthis.saveButtonView,\n\t\t\tthis.cancelButtonView,\n\t\t\tthis.unlinkButtonView\n\t\t];\n\n\t\tchildViews.forEach( v => {\n\t\t\t// Register the view as focusable.\n\t\t\tthis._focusables.add( v );\n\n\t\t\t// Register the view in the focus tracker.\n\t\t\tthis.focusTracker.add( v.element );\n\t\t} );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\t// Start listening for the keystrokes coming from #element.\n\t\tthis.keystrokes.listenTo( this.element );\n\n\t\treturn super.init();\n\t}\n\n\t/**\n\t * Focuses the fist {@link #_focusables} in the form.\n\t */\n\tfocus() {\n\t\tthis._focusCycler.focusFirst();\n\t}\n\n\t/**\n\t * Create labeled input view.\n\t *\n\t * @private\n\t * @returns {module:ui/labeledinput/labeledinputview~LabeledInputView} Labeled input view instance.\n\t */\n\t_createUrlInput() {\n\t\tconst t = this.locale.t;\n\n\t\tconst labeledInput = new LabeledInputView( this.locale, InputTextView );\n\n\t\tlabeledInput.label = t( 'Link URL' );\n\n\t\treturn labeledInput;\n\t}\n\n\t/**\n\t * Creates button View.\n\t *\n\t * @private\n\t * @param {String} label Button label\n\t * @param {String} [eventName] Event name which ButtonView#execute event will be delegated to.\n\t * @returns {module:ui/button/buttonview~ButtonView} Button view instance.\n\t */\n\t_createButton( label, eventName ) {\n\t\tconst button = new ButtonView( this.locale );\n\n\t\tbutton.label = label;\n\t\tbutton.withText = true;\n\n\t\tif ( eventName ) {\n\t\t\tbutton.delegate( 'execute' ).to( this, eventName );\n\t\t}\n\n\t\treturn button;\n\t}\n}\n\n/**\n * Fired when the form view is submitted (when one of the child triggered submit event).\n * E.g. click on {@link #saveButtonView}.\n *\n * @event submit\n */\n\n/**\n * Fired when the form view is canceled, e.g. click on {@link #cancelButtonView}.\n *\n * @event cancel\n */\n\n/**\n * Fired when the {@link #unlinkButtonView} is clicked.\n *\n * @event unlink\n */\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-link/src/ui/linkformview.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module link/unlinkcommand\n */\n\nimport Command from '@ckeditor/ckeditor5-core/src/command/command';\nimport findLinkRange from './findlinkrange';\n\n/**\n * The unlink command. It is used by the {@link module:link/link~Link link plugin}.\n *\n * @extends module:core/command/command~Command\n */\nexport default class UnlinkCommand extends Command {\n\t/**\n\t * @see module:core/command/command~Command\n\t * @param {module:core/editor/editor~Editor} editor\n\t */\n\tconstructor( editor ) {\n\t\tsuper( editor );\n\n\t\t// Checks when command should be enabled or disabled.\n\t\tthis.listenTo( editor.document.selection, 'change:attribute', () => this.refreshState() );\n\t}\n\n\t/**\n\t * Executes the command.\n\t *\n\t * When the selection is collapsed, removes `linkHref` attribute from each node with the same `linkHref` attribute value.\n\t * When the selection is non-collapsed, removes `linkHref` from each node in selected ranges.\n\t *\n\t * @protected\n\t */\n\t_doExecute() {\n\t\tconst document = this.editor.document;\n\t\tconst selection = document.selection;\n\n\t\tdocument.enqueueChanges( () => {\n\t\t\t// Get ranges to unlink.\n\t\t\tconst rangesToUnlink = selection.isCollapsed ?\n\t\t\t\t[ findLinkRange( selection.getFirstPosition(), selection.getAttribute( 'linkHref' ) ) ] : selection.getRanges();\n\n\t\t\t// Keep it as one undo step.\n\t\t\tconst batch = document.batch();\n\n\t\t\t// Remove `linkHref` attribute from specified ranges.\n\t\t\tfor ( let range of rangesToUnlink ) {\n\t\t\t\tbatch.removeAttribute( range, 'linkHref' );\n\t\t\t}\n\t\t} );\n\t}\n\n\t/**\n\t * Checks if selection has `linkHref` attribute.\n\t *\n\t * @protected\n\t * @returns {Boolean}\n\t */\n\t_checkEnabled() {\n\t\treturn this.editor.document.selection.hasAttribute( 'linkHref' );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-link/src/unlinkcommand.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module list/converters\n */\n\nimport ViewListItemElement from './viewlistitemelement';\n\nimport ModelElement from '@ckeditor/ckeditor5-engine/src/model/element';\nimport ModelPosition from '@ckeditor/ckeditor5-engine/src/model/position';\n\nimport ViewContainerElement from '@ckeditor/ckeditor5-engine/src/view/containerelement';\nimport ViewPosition from '@ckeditor/ckeditor5-engine/src/view/position';\nimport ViewRange from '@ckeditor/ckeditor5-engine/src/view/range';\nimport viewWriter from '@ckeditor/ckeditor5-engine/src/view/writer';\n\n/**\n * Model to view converter for `listItem` model element insertion.\n *\n * It creates `<ul><li></li><ul>` (or `<ol>`) view structure out of `listItem` model element, inserts it at correct\n * position, and merges the list with surrounding lists (if able).\n *\n * @see module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:insert\n * @param {module:utils/eventinfo~EventInfo} evt Object containing information about the fired event.\n * @param {Object} data Additional information about the change.\n * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n * @param {Object} conversionApi Conversion interface.\n */\nexport function modelViewInsertion( evt, data, consumable, conversionApi ) {\n\tif ( !consumable.test( data.item, 'insert' ) ||\n\t\t!consumable.test( data.item, 'addAttribute:type' ) ||\n\t\t!consumable.test( data.item, 'addAttribute:indent' )\n\t) {\n\t\treturn;\n\t}\n\n\tconsumable.consume( data.item, 'insert' );\n\tconsumable.consume( data.item, 'addAttribute:type' );\n\tconsumable.consume( data.item, 'addAttribute:indent' );\n\n\tconst modelItem = data.item;\n\tconst viewItem = generateLiInUl( modelItem, conversionApi.mapper );\n\n\tinjectViewList( modelItem, viewItem, conversionApi.mapper );\n}\n\n/**\n * Model to view converter for `type` attribute change on `listItem` model element.\n *\n * This change means that `<li>`s parent changes from `<ul>` to `<ol>` (or vice versa). This is accomplished by breaking\n * view elements, changing their name and merging them.\n *\n * @see module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:changeAttribute\n * @param {module:utils/eventinfo~EventInfo} evt Object containing information about the fired event.\n * @param {Object} data Additional information about the change.\n * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n * @param {Object} conversionApi Conversion interface.\n */\nexport function modelViewChangeType( evt, data, consumable, conversionApi ) {\n\tif ( !consumable.consume( data.item, 'changeAttribute:type' ) ) {\n\t\treturn;\n\t}\n\n\tconst viewItem = conversionApi.mapper.toViewElement( data.item );\n\n\t// 1. Break the container after and before the list item.\n\t// This will create a view list with one view list item -- the one that changed type.\n\tviewWriter.breakContainer( ViewPosition.createBefore( viewItem ) );\n\tviewWriter.breakContainer( ViewPosition.createAfter( viewItem ) );\n\n\t// 2. Change name of the view list that holds the changed view item.\n\t// We cannot just change name property, because that would not render properly.\n\tlet viewList = viewItem.parent;\n\tconst listName = data.attributeNewValue == 'numbered' ? 'ol' : 'ul';\n\tviewList = viewWriter.rename( viewList, listName );\n\n\t// 3. Merge the changed view list with other lists, if possible.\n\tmergeViewLists( viewList, viewList.nextSibling );\n\tmergeViewLists( viewList.previousSibling, viewList );\n}\n\n/**\n * Model to view converter for `listItem` model element remove.\n *\n * @see module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:remove\n * @param {module:utils/eventinfo~EventInfo} evt Object containing information about the fired event.\n * @param {Object} data Additional information about the change.\n * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n * @param {Object} conversionApi Conversion interface.\n */\nexport function modelViewRemove( evt, data, consumable, conversionApi ) {\n\tif ( !consumable.consume( data.item, 'remove' ) ) {\n\t\treturn;\n\t}\n\n\tconst viewItem = conversionApi.mapper.toViewElement( data.item );\n\n\t// 1. Break the container after and before the list item.\n\t// This will create a view list with one view list item -- the one that changed type.\n\tviewWriter.breakContainer( ViewPosition.createBefore( viewItem ) );\n\tviewWriter.breakContainer( ViewPosition.createAfter( viewItem ) );\n\n\t// 2. Remove the UL that contains just the removed LI.\n\tconst viewList = viewItem.parent;\n\tviewWriter.remove( ViewRange.createOn( viewList ) );\n}\n\n/**\n * Model to view converter for `indent` attribute change on `listItem` model element.\n *\n * @see module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:changeAttribute\n * @param {module:utils/eventinfo~EventInfo} evt Object containing information about the fired event.\n * @param {Object} data Additional information about the change.\n * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n * @param {Object} conversionApi Conversion interface.\n */\nexport function modelViewChangeIndent( evt, data, consumable, conversionApi ) {\n\t/* istanbul ignore if */ // Part of code connected with indenting that is not yet complete.\n\tif ( !consumable.consume( data.item, 'changeAttribute:indent' ) ) {\n\t\treturn;\n\t}\n\n\tconst viewItem = conversionApi.mapper.toViewElement( data.item );\n\n\t// 1. Break the container after and before the list item.\n\t// This will create a view list with one view list item -- the one that changed type.\n\tviewWriter.breakContainer( ViewPosition.createBefore( viewItem ) );\n\tviewWriter.breakContainer( ViewPosition.createAfter( viewItem ) );\n\n\t// 2. Extract view list with changed view list item and merge \"hole\" possibly created by breaking and removing elements.\n\tconst viewList = viewItem.parent;\n\tconst viewListPrev = viewList.previousSibling;\n\n\tviewWriter.remove( ViewRange.createOn( viewList ) );\n\n\t// If there is no `viewListPrev` it means that the first item was indented which is an error.\n\tmergeViewLists( viewListPrev, viewListPrev.nextSibling );\n\n\t// 3. Inject view list like it is newly inserted.\n\tinjectViewList( data.item, viewItem, conversionApi.mapper );\n}\n\n/**\n * A special model to view converter introduced by {@link module:list/list~List List feature}. This converter is fired for\n * insert change of every model item, and should be fired before actual converter. The converter checks whether inserted\n * model item is a non-`listItem` element. If it is, and it is inserted inside a view list, the converter breaks the\n * list so the model element is inserted to the view parent element corresponding to its model parent element.\n *\n * The converter prevents such situations:\n *\n *\t\t// Model:                        // View:\n *\t\t<listItem>foo</listItem>         <ul>\n *\t\t<listItem>bar</listItem>             <li>foo</li>\n *\t\t                                     <li>bar</li>\n *\t\t                                 </ul>\n *\n *\t\t// After change:                 // Correct view guaranteed by this converter:\n *\t\t<listItem>foo</listItem>         <ul><li>foo</li></ul><p>xxx</p><ul><li>bar</li></ul>\n *\t\t<paragraph>xxx</paragraph>       // Instead of this wrong view state:\n *\t\t<listItem>bar</listItem>         <ul><li>foo</li><p>xxx</p><li>bar</li></ul>\n *\n * @see module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:insert\n * @param {module:utils/eventinfo~EventInfo} evt Object containing information about the fired event.\n * @param {Object} data Additional information about the change.\n * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n * @param {Object} conversionApi Conversion interface.\n */\nexport function modelViewSplitOnInsert( evt, data, consumable, conversionApi ) {\n\tif ( data.item.name != 'listItem' ) {\n\t\tlet viewPosition = conversionApi.mapper.toViewPosition( data.range.start );\n\n\t\t// Break multiple ULs/OLs if there are.\n\t\twhile ( viewPosition.parent.name == 'ul' || viewPosition.parent.name == 'ol' ) {\n\t\t\tviewPosition = viewWriter.breakContainer( viewPosition );\n\n\t\t\t/* istanbul ignore else */ // Part of code connected with indenting that is not yet complete.\n\t\t\tif ( viewPosition.parent.parent === null ) {\n\t\t\t\tbreak;\n\t\t\t}\n\n\t\t\t/* istanbul ignore next */ // Part of code connected with indenting that is not yet complete.\n\t\t\tviewPosition = ViewPosition.createBefore( viewPosition.parent );\n\t\t}\n\t}\n}\n\n/**\n * A special model to view converter introduced by {@link module:list/list~List List feature}. This converter takes care of\n * merging view lists after something is removed or moved from near them.\n *\n * Example:\n *\n *\t\t// Model:                        // View:\n *\t\t<listItem>foo</listItem>         <ul><li>foo</li></ul>\n *\t\t<paragraph>xxx</paragraph>       <p>xxx</p>\n *\t\t<listItem>bar</listItem>         <ul><li>bar</li></ul>\n *\n *\t\t// After change:                 // Correct view guaranteed by this converter:\n *\t\t<listItem>foo</listItem>         <ul>\n *\t\t<listItem>bar</listItem>             <li>foo</li>\n *\t\t                                     <li>bar</li>\n *\t\t                                 </ul>\n *\n * @see module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:remove\n * @see module:engine/conversion/modelconversiondispatcher~ModelConversionDispatcher#event:move\n * @param {module:utils/eventinfo~EventInfo} evt Object containing information about the fired event.\n * @param {Object} data Additional information about the change.\n * @param {module:engine/conversion/modelconsumable~ModelConsumable} consumable Values to consume.\n * @param {Object} conversionApi Conversion interface.\n */\nexport function modelViewMergeAfter( evt, data, consumable, conversionApi ) {\n\tconst viewPosition = conversionApi.mapper.toViewPosition( data.sourcePosition );\n\tconst viewItemPrev = viewPosition.nodeBefore;\n\tconst viewItemNext = viewPosition.nodeAfter;\n\n\t// Merge lists if something (remove, move) was done from inside of list.\n\t// Merging will be done only if both items are view lists of the same type.\n\t// The check is done inside the helper function.\n\tmergeViewLists( viewItemPrev, viewItemNext );\n}\n\n/**\n * View to model converter that converts view `<li>` elements into `listItem` model elements.\n *\n * To set correct values of `type` and `indent` attribute the converter:\n * * checks `<li>`'s parent,\n * * passes `data.indent` value when `<li>`'s sub-items are converted.\n *\n * @see module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher#event:element\n * @param {module:utils/eventinfo~EventInfo} evt Object containing information about the fired event.\n * @param {Object} data Object containing conversion input and a placeholder for conversion output and possibly other values.\n * @param {module:engine/conversion/viewconsumable~ViewConsumable} consumable Values to consume.\n * @param {Object} conversionApi Conversion interface to be used by callback.\n */\nexport function viewModelConverter( evt, data, consumable, conversionApi ) {\n\tif ( consumable.consume( data.input, { name: true } ) ) {\n\t\t// 1. Create `listItem` model element.\n\t\tconst listItem = new ModelElement( 'listItem' );\n\n\t\t// 2. Handle `listItem` model element attributes.\n\t\tdata.indent = data.indent ? data.indent : 0;\n\n\t\tconst type = data.input.parent.name == 'ul' ? 'bulleted' : 'numbered';\n\t\tlistItem.setAttribute( 'type', type );\n\t\tlistItem.setAttribute( 'indent', data.indent );\n\n\t\t// 3. Handle `<li>` children.\n\t\tdata.context.push( listItem );\n\n\t\t// `listItem`s created recursievly should have bigger indent.\n\t\tdata.indent++;\n\n\t\t// `listItem`s will be kept in flat structure.\n\t\tlet items = [ listItem ];\n\n\t\t// Check all children of the converted `<li>`.\n\t\t// At this point we assume there are no \"whitespace\" view text nodes in view list, between view list items.\n\t\t// This should be handled by `<ul>` and `<ol>` converters.\n\t\tfor ( let child of data.input.getChildren() ) {\n\t\t\t// Let's convert the child.\n\t\t\tconst converted = conversionApi.convertItem( child, consumable, data );\n\n\t\t\t// If this is a view list element, we will convert it and concat the result (`listItem` model elements)\n\t\t\t// with already gathered results (in `items` array). `converted` should be a `ModelDocumentFragment`.\n\t\t\tif ( child.name == 'ul' || child.name == 'ol' ) {\n\t\t\t\titems = items.concat( Array.from( converted.getChildren() ) );\n\t\t\t}\n\t\t\t// If it was not a list it was a \"regular\" list item content. Just append it to `listItem`.\n\t\t\telse {\n\t\t\t\tlistItem.appendChildren( converted );\n\t\t\t}\n\t\t}\n\n\t\tdata.indent--;\n\t\tdata.context.pop();\n\n\t\t/* istanbul ignore next */ // Part of code connected with indenting that is not yet complete.\n\t\tdata.output = data.output ? data.output.concat( items ) : items;\n\t}\n}\n\n/**\n * View to model converter for `<ul>` and `<ol>` view elements, that cleans the input view out of garbage.\n * This is mostly to clean white spaces from between `<li>` view elements inside the view list element, however also\n * incorrect data can be cleared if the view was incorrect.\n *\n * @see module:engine/conversion/viewconversiondispatcher~ViewConversionDispatcher#event:element\n * @param {module:utils/eventinfo~EventInfo} evt Object containing information about the fired event.\n * @param {Object} data Object containing conversion input and a placeholder for conversion output and possibly other values.\n * @param {module:engine/conversion/viewconsumable~ViewConsumable} consumable Values to consume.\n */\nexport function cleanList( evt, data, consumable ) {\n\tif ( consumable.test( data.input, { name: true } ) ) {\n\t\t// Caching children because when we start removing them iterating fails.\n\t\tconst children = Array.from( data.input.getChildren() );\n\n\t\tfor ( let child of children ) {\n\t\t\tif ( !child.name || child.name != 'li' ) {\n\t\t\t\tchild.remove();\n\t\t\t}\n\t\t}\n\t}\n}\n\n/**\n * Callback for model position to view position mapping for {@link module:engine/conversion/mapper~Mapper}. The callback fixes positions\n * between `listItem` elements, that would be incorrectly mapped because of how list items are represented in model\n * and view.\n *\n * @see module:engine/conversion/mapper~Mapper#event:modelToViewPosition\n * @param {module:utils/eventinfo~EventInfo} evt Object containing information about the fired event.\n * @param {Object} data Object containing additional data and placeholder for mapping result.\n */\nexport function modelToViewPosition( evt, data ) {\n\tif ( data.viewPosition.parent.name == 'li' && data.modelPosition.parent.name != 'listItem' ) {\n\t\tdata.viewPosition = ViewPosition.createBefore( data.viewPosition.parent );\n\n\t\tevt.stop();\n\t}\n}\n\n/**\n * Callback for view position to model position mapping for {@link module:engine/conversion/mapper~Mapper}. The callback fixes positions\n * between `<li>` elements, that would be incorrectly mapped because of how list items are represented in model\n * and view.\n *\n * @see module:engine/conversion/mapper~Mapper#event:viewToModelPosition\n * @param {module:utils/eventinfo~EventInfo} evt Object containing information about the fired event.\n * @param {Object} data Object containing additional data and placeholder for mapping result.\n */\nexport function viewToModelPosition( evt, data ) {\n\tconst viewPosition = data.viewPosition;\n\tconst mapper = data.mapper;\n\tconst nodeAfter = viewPosition.nodeAfter;\n\tconst nodeBefore = viewPosition.nodeBefore;\n\n\tlet modelNode;\n\n\tif ( nodeAfter ) {\n\t\tif ( nodeAfter.name == 'ul' || nodeAfter.name == 'ol' ) {\n\t\t\t// If the position is before view list, model position should be placed before `listItem`\n\t\t\t// that is bound to the first `<li>` of that view list.\n\t\t\t// Default algorithm would work like this but only for top-level list.\n\t\t\tmodelNode = mapper.toModelElement( nodeAfter.getChild( 0 ) );\n\t\t} else if ( nodeAfter.name == 'li' ) {\n\t\t\t// If the position is before view list item, just place model position before bound `listItem` element.\n\t\t\tmodelNode = mapper.toModelElement( nodeAfter );\n\t\t}\n\n\t\tif ( modelNode ) {\n\t\t\tdata.modelPosition = ModelPosition.createBefore( modelNode );\n\t\t}\n\t} else if ( nodeBefore ) {\n\t\tlet viewNode;\n\n\t\t// Find `<li>` after which we want to place position.\n\t\t// We want to find a `<li>` that will be mapped to model `listItem` element. That `listItem` will\n\t\t// be used as a reference point to evaluate model position.\n\t\t/* istanbul ignore if */ // Part of code connected with indenting that is not yet complete.\n\t\tif ( nodeBefore.name == 'ul' || nodeBefore.name == 'ol' ) {\n\t\t\t// If the position is before view list, take the last `<li>` of that view list.\n\t\t\tviewNode = nodeBefore.getChild( nodeBefore.childCount - 1 );\n\t\t} else if ( nodeBefore.name == 'li' ) {\n\t\t\t// If the position is before view list item, take that `<li>`.\n\t\t\tviewNode = nodeBefore;\n\t\t}\n\n\t\t// Evaluate correct model position.\n\t\t// At this stage we have a `<li>`. This `<li>` may have nested `<li>`s inside. We will use `mapper`\n\t\t// to obtain this `<li>`'s model length. Placing model position after that `<li>` will be done\n\t\t// by placing it before the bound `listItem` and moving by offset equal to `<li>`s length.\n\t\tif ( viewNode ) {\n\t\t\tmodelNode = mapper.toModelElement( viewNode );\n\t\t\tconst offset = mapper.getModelLength( viewNode );\n\n\t\t\tdata.modelPosition = ModelPosition.createBefore( modelNode ).getShiftedBy( offset );\n\t\t}\n\t}\n\n\t// If we found a model position, stop the event.\n\tif ( data.modelPosition !== null ) {\n\t\tevt.stop();\n\t}\n}\n\n// Helper function that creates a `<ul><li></li></ul>` structure out of given `modelItem` model `listItem` element.\n// Then, it binds created view list item (LI) with model `listItem` element.\n// The function then returns created view list item (LI).\nfunction generateLiInUl( modelItem, mapper ) {\n\tconst listType = modelItem.getAttribute( 'type' ) == 'numbered' ? 'ol' : 'ul';\n\tconst viewItem = new ViewListItemElement();\n\n\tconst viewList = new ViewContainerElement( listType, null );\n\tviewList.appendChildren( viewItem );\n\n\tmapper.bindElements( modelItem, viewItem );\n\n\treturn viewItem;\n}\n\n// Helper function that seeks for a sibling of given `modelItem` that is a `listItem` element and meets given criteria.\n// `options` object may contain one or more of given values (by default they are `false`):\n// `options.getNext` - whether next or previous siblings should be checked (default = previous)\n// `options.checkAllSiblings` - whether all siblings or just the first one should be checked (default = only one),\n// `options.sameIndent` - whether sought sibling should have same indent (default = no),\n// `options.biggerIndent` - whether sought sibling should have bigger indent (default = no).\n// Either `options.sameIndent` or `options.biggerIndent` should be set to `true`.\nfunction getSiblingListItem( modelItem, options ) {\n\tconst direction = options.getNext ? 'nextSibling' : 'previousSibling';\n\tconst checkAllSiblings = !!options.checkAllSiblings;\n\tconst sameIndent = !!options.sameIndent;\n\tconst biggerIndent = !!options.biggerIndent;\n\n\tconst indent = modelItem.getAttribute( 'indent' );\n\n\tlet item = modelItem[ direction ];\n\n\twhile ( item && item.name == 'listItem' ) {\n\t\tlet itemIndent = item.getAttribute( 'indent' );\n\n\t\tif ( sameIndent && indent == itemIndent || biggerIndent && indent < itemIndent ) {\n\t\t\treturn item;\n\t\t} else if ( !checkAllSiblings || indent > itemIndent ) {\n\t\t\treturn null;\n\t\t}\n\n\t\titem = item[ direction ];\n\t}\n\n\treturn null;\n}\n\n// Helper function that takes two parameters, that are expected to be view list elements, and merges them.\n// The merge happen only if both parameters are UL or OL elements.\nfunction mergeViewLists( firstList, secondList ) {\n\tif ( firstList && secondList && ( firstList.name == 'ul' || firstList.name == 'ol' ) && firstList.name == secondList.name ) {\n\t\tviewWriter.mergeContainers( ViewPosition.createAfter( firstList ) );\n\t}\n}\n\n// Helper function that takes model list item element `modelItem`, corresponding view list item element `injectedItem`\n// that is not added to the view and is inside a view list element (`ul` or `ol`) and is that's list only child.\n// The list is inserted at correct position (element breaking may be needed) and then merged with it's siblings.\n// See comments below to better understand the algorithm.\nfunction injectViewList( modelItem, injectedItem, mapper ) {\n\tconst injectedList = injectedItem.parent;\n\n\t// 1. Break after previous `listItem` if it has same or bigger indent.\n\tconst prevModelItem = getSiblingListItem( modelItem, { sameIndent: true, biggerIndent: true } );\n\n\tif ( prevModelItem ) {\n\t\tlet viewItem = mapper.toViewElement( prevModelItem );\n\t\tlet viewPosition = ViewPosition.createAfter( viewItem );\n\t\tviewWriter.breakContainer( viewPosition );\n\t}\n\n\t// 2. Break after closest previous `listItem` sibling with same indent.\n\tconst sameIndentModelItem = getSiblingListItem( modelItem, { sameIndent: true, checkAllSiblings: true } );\n\t// Position between broken lists will be a place where new list is inserted.\n\t// If there is nothing to break (`sameIndentModelItem` is falsy) it means that converted list item\n\t// is (will be) the first list item.\n\tlet insertionPosition;\n\n\tif ( sameIndentModelItem ) {\n\t\tlet viewItem = mapper.toViewElement( sameIndentModelItem );\n\t\tlet viewPosition = ViewPosition.createAfter( viewItem );\n\t\tinsertionPosition = viewWriter.breakContainer( viewPosition );\n\t} else {\n\t\t// If there is a list item before converted list item, it means that that list item has lower indent.\n\t\t// In such case the created view list should be appended as a child of that item.\n\t\tconst prevSibling = modelItem.previousSibling;\n\n\t\tif ( prevSibling && prevSibling.name == 'listItem' ) {\n\t\t\tinsertionPosition = ViewPosition.createAt( mapper.toViewElement( prevSibling ), 'end' );\n\t\t} else {\n\t\t\t// This is the very first list item, use position mapping to get correct insertion position.\n\t\t\tinsertionPosition = mapper.toViewPosition( ModelPosition.createBefore( modelItem ) );\n\t\t}\n\t}\n\n\t// 3. Append new UL/OL in position after breaking in step 2.\n\tviewWriter.insert( insertionPosition, injectedList );\n\n\t// 4. If next sibling is list item with bigger indent, append it's UL/OL to new LI.\n\tconst nextModelItem = getSiblingListItem( modelItem, { getNext: true, biggerIndent: true } );\n\tconst nextViewItem = mapper.toViewElement( nextModelItem );\n\n\t/* istanbul ignore if */ // Part of code connected with indenting that is not yet complete.\n\tif ( nextViewItem ) {\n\t\tlet sourceRange = ViewRange.createOn( nextViewItem.parent );\n\t\tlet targetPosition = ViewPosition.createAt( injectedItem, 'end' );\n\t\tviewWriter.move( sourceRange, targetPosition );\n\t}\n\n\t// 5. Merge new UL/OL with above and below items (ULs/OLs or LIs).\n\tmergeViewLists( injectedList, injectedList.nextSibling );\n\tmergeViewLists( injectedList.previousSibling, injectedList );\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-list/src/converters.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module list/indentcommand\n */\n\nimport Command from '@ckeditor/ckeditor5-core/src/command/command';\nimport { getClosestListItem } from './utils';\n\n/**\n * The list indent command. It is used by the {@link module:list/list~List list feature}.\n *\n * @extends core.command.Command\n */\nexport default class IndentCommand extends Command {\n\t/**\n\t * Creates an instance of the command.\n\t *\n\t * @param {module:core/editor/editor~Editor} editor Editor instance.\n\t * @param {'forward'|'backward'} indentDirection Direction of indent. If it is equal to `backward`, the command\n\t * will outdent a list item.\n\t */\n\tconstructor( editor, indentDirection ) {\n\t\tsuper( editor );\n\n\t\t/**\n\t\t * By how much the command will change list item's indent attribute.\n\t\t *\n\t\t * @readonly\n\t\t * @private\n\t\t * @member {Number}\n\t\t */\n\t\tthis._indentBy = indentDirection == 'forward' ? 1 : -1;\n\n\t\t// Refresh command state after selection is changed or changes has been done to the document.\n\t\tthis.listenTo( editor.document.selection, 'change:range', () => {\n\t\t\tthis.refreshState();\n\t\t} );\n\n\t\tthis.listenTo( editor.document, 'changesDone', () => {\n\t\t\tthis.refreshState();\n\t\t} );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\t_doExecute() {\n\t\tconst doc = this.editor.document;\n\t\tconst batch = doc.batch();\n\t\tconst element = getClosestListItem( doc.selection.getFirstPosition() );\n\n\t\tdoc.enqueueChanges( () => {\n\t\t\tconst oldIndent = element.getAttribute( 'indent' );\n\n\t\t\tlet itemsToChange = [ element ];\n\n\t\t\t// Indenting a list item should also indent all the items that are already sub-items of indented item.\n\t\t\tlet next = element.nextSibling;\n\n\t\t\t// Check all items as long as their indent is bigger than indent of changed list item.\n\t\t\twhile ( next && next.name == 'listItem' && next.getAttribute( 'indent' ) > oldIndent ) {\n\t\t\t\titemsToChange.push( next );\n\n\t\t\t\tnext = next.nextSibling;\n\t\t\t}\n\n\t\t\t// We need to be sure to keep model in correct state after each small change, because converters\n\t\t\t// bases on that state and assumes that model is correct.\n\t\t\t// Because of that, if the command outdented items, we will outdent them starting from the last item, as\n\t\t\t// it is safer.\n\t\t\tif ( this._indentBy < 0 ) {\n\t\t\t\titemsToChange = itemsToChange.reverse();\n\t\t\t}\n\n\t\t\tfor ( let item of itemsToChange ) {\n\t\t\t\tconst indent = item.getAttribute( 'indent' ) + this._indentBy;\n\n\t\t\t\t// If indent is lower than 0, it means that the item got outdented when it was not indented.\n\t\t\t\t// This means that we need to convert that list item to paragraph.\n\t\t\t\tif ( indent < 0 ) {\n\t\t\t\t\t// To keep the model as correct as possible, first rename listItem, then remove attributes,\n\t\t\t\t\t// as listItem without attributes is very incorrect and will cause problems in converters.\n\t\t\t\t\tbatch.rename( item, 'paragraph' ).removeAttribute( item, 'indent' ).removeAttribute( item, 'type' );\n\t\t\t\t} else {\n\t\t\t\t\t// If indent is >= 0, just change the attribute value.\n\t\t\t\t\tbatch.setAttribute( item, 'indent', indent );\n\t\t\t\t}\n\t\t\t}\n\t\t} );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\t_checkEnabled() {\n\t\t// Check whether any of position's ancestor is a list item.\n\t\tconst listItem = getClosestListItem( this.editor.document.selection.getFirstPosition() );\n\n\t\t// If selection is not in a list item, the command is disabled.\n\t\tif ( !listItem ) {\n\t\t\treturn false;\n\t\t}\n\n\t\tconst prev = listItem.previousSibling;\n\t\tconst oldIndent = listItem.getAttribute( 'indent' );\n\t\tconst newIndent = oldIndent + this._indentBy;\n\n\t\tif ( this._indentBy > 0 ) {\n\t\t\t// If we are indenting, there are some conditions to meet.\n\t\t\t// Cannot indent first list item.\n\t\t\tif ( !prev || prev.name != 'listItem' ) {\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\t// Indent can be at most greater by one than indent of previous item.\n\t\t\tif ( prev.getAttribute( 'indent' ) + 1 < newIndent ) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t}\n\n\t\t// If we are outdenting it is enough to be in list item. Every list item can always be outdented.\n\t\treturn true;\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-list/src/indentcommand.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module list/list\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport ListEngine from './listengine';\nimport ButtonView from '@ckeditor/ckeditor5-ui/src/button/buttonview';\nimport { parseKeystroke } from '@ckeditor/ckeditor5-utils/src/keyboard';\n\nimport numberedListIcon from '../theme/icons/numberedlist.svg';\nimport bulletedListIcon from '../theme/icons/bulletedlist.svg';\n\n/**\n * The lists feature. It introduces the `numberedList` and `bulletedList` buttons which\n * allows to convert paragraphs to/from list items and indent/outdent them.\n *\n * See also {@link module:list/listengine~ListEngine}.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class List extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get requires() {\n\t\treturn [ ListEngine ];\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\t// Create two buttons and link them with numberedList and bulletedList commands.\n\t\tconst t = this.editor.t;\n\t\tthis._addButton( 'numberedList', t( 'Numbered List' ), numberedListIcon );\n\t\tthis._addButton( 'bulletedList', t( 'Bulleted List' ), bulletedListIcon );\n\n\t\t// Overwrite default enter key behavior.\n\t\t// If enter key is pressed with selection collapsed in empty list item, outdent it instead of breaking it.\n\t\tthis.listenTo( this.editor.editing.view, 'enter', ( evt, data ) => {\n\t\t\tconst doc = this.editor.document;\n\t\t\tconst positionParent = doc.selection.getLastPosition().parent;\n\n\t\t\tif ( doc.selection.isCollapsed && positionParent.name == 'listItem' && positionParent.isEmpty ) {\n\t\t\t\tthis.editor.execute( 'outdentList' );\n\n\t\t\t\tdata.preventDefault();\n\t\t\t\tevt.stop();\n\t\t\t}\n\t\t} );\n\n\t\t// Add tab key support.\n\t\t// When in list item, pressing tab should indent list item, if possible.\n\t\t// Pressing shift + tab shout outdent list item.\n\t\tthis.listenTo( this.editor.editing.view, 'keydown', ( evt, data ) => {\n\t\t\tlet commandName = null;\n\n\t\t\tif ( data.keystroke == parseKeystroke( 'tab' ) ) {\n\t\t\t\tcommandName = 'indentList';\n\t\t\t} else if ( data.keystroke == parseKeystroke( 'Shift+tab' ) ) {\n\t\t\t\tcommandName = 'outdentList';\n\t\t\t}\n\n\t\t\tif ( commandName ) {\n\t\t\t\tconst command = this.editor.commands.get( commandName );\n\n\t\t\t\tif ( command.isEnabled ) {\n\t\t\t\t\tthis.editor.execute( commandName );\n\n\t\t\t\t\tdata.preventDefault();\n\t\t\t\t\tevt.stop();\n\t\t\t\t}\n\t\t\t}\n\t\t} );\n\t}\n\n\t/**\n\t * Helper method for initializing a button and linking it with an appropriate command.\n\t *\n\t * @private\n\t * @param {String} commandName Name of the command.\n\t * @param {Object} label Button label.\n\t * @param {String} icon Source of the icon.\n\t */\n\t_addButton( commandName, label, icon ) {\n\t\tconst editor = this.editor;\n\t\tconst command = editor.commands.get( commandName );\n\n\t\teditor.ui.componentFactory.add( commandName, ( locale ) => {\n\t\t\tconst buttonView = new ButtonView( locale );\n\n\t\t\tbuttonView.set( {\n\t\t\t\tlabel: label,\n\t\t\t\ticon: icon,\n\t\t\t\ttooltip: true\n\t\t\t} );\n\n\t\t\t// Bind button model to command.\n\t\t\tbuttonView.bind( 'isOn', 'isEnabled' ).to( command, 'value', 'isEnabled' );\n\n\t\t\t// Execute command.\n\t\t\tthis.listenTo( buttonView, 'execute', () => editor.execute( commandName ) );\n\n\t\t\treturn buttonView;\n\t\t} );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-list/src/list.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module list/listcommand\n */\n\nimport Command from '@ckeditor/ckeditor5-core/src/command/command';\nimport Position from '@ckeditor/ckeditor5-engine/src/model/position';\nimport { getClosestListItem } from './utils';\n\n/**\n * The list command. It is used by the {@link module:list/list~List list feature}.\n *\n * @extends module:core/command/command~Command\n */\nexport default class ListCommand extends Command {\n\t/**\n\t * Creates an instance of the command.\n\t *\n\t * @param {module:core/editor/editor~Editor} editor Editor instance.\n\t * @param {'numbered'|'bulleted'} type List type that will be handled by this command.\n\t */\n\tconstructor( editor, type ) {\n\t\tsuper( editor );\n\n\t\t/**\n\t\t * The type of list created by the command.\n\t\t *\n\t\t * @readonly\n\t\t * @member {'numbered'|'bulleted'}\n\t\t */\n\t\tthis.type = type == 'bulleted' ? 'bulleted' : 'numbered';\n\n\t\t/**\n\t\t * Flag indicating whether the command is active, which means that selection starts in a list of the same type.\n\t\t *\n\t\t * @observable\n\t\t * @member {Boolean}\n\t\t */\n\t\tthis.set( 'value', false );\n\n\t\tconst changeCallback = () => {\n\t\t\tthis.refreshValue();\n\t\t\tthis.refreshState();\n\t\t};\n\n\t\t// Listen on selection and document changes and set the current command's value.\n\t\tthis.listenTo( editor.document.selection, 'change:range', changeCallback );\n\t\tthis.listenTo( editor.document, 'changesDone', changeCallback );\n\t}\n\n\t/**\n\t * Sets command's value based on the document selection.\n\t */\n\trefreshValue() {\n\t\tconst position = this.editor.document.selection.getFirstPosition();\n\n\t\t// Check whether closest `listItem` ancestor of the position has a correct type.\n\t\tconst listItem = getClosestListItem( position );\n\t\tthis.value = listItem !== null && listItem.getAttribute( 'type' ) == this.type;\n\t}\n\n\t/**\n\t * Executes command.\n\t *\n\t * @protected\n\t * @param {Object} [options] Options for executed command.\n\t * @param {module:engine/model/batch~Batch} [options.batch] Batch to collect all the change steps.\n\t * New batch will be created if this option is not set.\n\t */\n\t_doExecute( options = {} ) {\n\t\tconst document = this.editor.document;\n\t\tconst blocks = Array.from( document.selection.getSelectedBlocks() );\n\n\t\t// Whether we are turning off some items.\n\t\tconst turnOff = this.value === true;\n\t\t// If we are turning off items, we are going to rename them to paragraphs.\n\n\t\tdocument.enqueueChanges( () => {\n\t\t\tconst batch = options.batch || document.batch();\n\n\t\t\t// If part of a list got turned off, we need to handle (outdent) all of sub-items of the last turned-off item.\n\t\t\t// To be sure that model is all the time in a good state, we first fix items below turned-off item.\n\t\t\tif ( turnOff ) {\n\t\t\t\t// Start from the model item that is just after the last turned-off item.\n\t\t\t\tlet next = blocks[ blocks.length - 1 ].nextSibling;\n\t\t\t\tlet currentIndent = Number.POSITIVE_INFINITY;\n\t\t\t\tlet changes = [];\n\n\t\t\t\t// Correct indent of all items after the last turned off item.\n\t\t\t\t// Rules that should be followed:\n\t\t\t\t// 1. All direct sub-items of turned-off item should become indent 0, because the first item after it\n\t\t\t\t//    will be the first item of a new list. Other items are at the same level, so should have same 0 index.\n\t\t\t\t// 2. All items with indent lower than indent of turned-off item should become indent 0, because they\n\t\t\t\t//    should not end up as a child of any of list items that they were not children of before.\n\t\t\t\t// 3. All other items should have their indent changed relatively to it's parent.\n\t\t\t\t//\n\t\t\t\t// For example:\n\t\t\t\t// 1  * --------\n\t\t\t\t// 2     * --------\n\t\t\t\t// 3        * -------- <- this is turned off.\n\t\t\t\t// 4           * -------- <- this has to become indent = 0, because it will be first item on a new list.\n\t\t\t\t// 5              * -------- <- this should be still be a child of item above, so indent = 1.\n\t\t\t\t// 6        * -------- <- this also has to become indent = 0, because it shouldn't end up as a child of any of items above.\n\t\t\t\t// 7           * -------- <- this should be still be a child of item above, so indent = 1.\n\t\t\t\t// 8     * -------- <- this has to become indent = 0.\n\t\t\t\t// 9        * -------- <- this should still be a child of item above, so indent = 1.\n\t\t\t\t// 10          * -------- <- this should still be a child of item above, so indent = 2.\n\t\t\t\t// 11          * -------- <- this should still be at the same level as item above, so indent = 2.\n\t\t\t\t// 12 * -------- <- this and all below are left unchanged.\n\t\t\t\t// 13    * --------\n\t\t\t\t// 14       * --------\n\t\t\t\t//\n\t\t\t\t// After turning off 3 the list becomes:\n\t\t\t\t//\n\t\t\t\t// 1  * --------\n\t\t\t\t// 2     * --------\n\t\t\t\t//\n\t\t\t\t// 3  --------\n\t\t\t\t//\n\t\t\t\t// 4  * --------\n\t\t\t\t// 5     * --------\n\t\t\t\t// 6  * --------\n\t\t\t\t// 7     * --------\n\t\t\t\t// 8  * --------\n\t\t\t\t// 9     * --------\n\t\t\t\t// 10       * --------\n\t\t\t\t// 11       * --------\n\t\t\t\t// 12 * --------\n\t\t\t\t// 13    * --------\n\t\t\t\t// 14       * --------\n\t\t\t\t//\n\t\t\t\t// Thanks to this algorithm no lists are mismatched and no items get unexpected children/parent, while\n\t\t\t\t// those parent-child connection which are possible to maintain are still maintained. It's worth noting\n\t\t\t\t// that this is the same effect that we would be get by multiple use of outdent command. However doing\n\t\t\t\t// it like this is much more efficient because it's less operation (less memory usage, easier OT) and\n\t\t\t\t// less conversion (faster).\n\t\t\t\twhile ( next && next.name == 'listItem' && next.getAttribute( 'indent' ) !== 0 ) {\n\t\t\t\t\t// Check each next list item, as long as its indent is bigger than 0.\n\t\t\t\t\t// If the indent is 0 we are not going to change anything anyway.\n\t\t\t\t\tconst indent = next.getAttribute( 'indent' );\n\n\t\t\t\t\t// We check if that's item indent is lower as current relative indent.\n\t\t\t\t\tif ( indent < currentIndent ) {\n\t\t\t\t\t\t// If it is, current relative indent becomes that indent.\n\t\t\t\t\t\tcurrentIndent = indent;\n\t\t\t\t\t}\n\n\t\t\t\t\t// Fix indent relatively to current relative indent.\n\t\t\t\t\t// Note, that if we just changed the current relative indent, the newIndent will be equal to 0.\n\t\t\t\t\tconst newIndent = indent - currentIndent;\n\n\t\t\t\t\t// Save the entry in changes array. We do not apply it at the moment, because we will need to\n\t\t\t\t\t// reverse the changes so the last item is changed first.\n\t\t\t\t\t// This is to keep model in correct state all the time.\n\t\t\t\t\tchanges.push( { element: next, indent: newIndent } );\n\n\t\t\t\t\t// Find next item.\n\t\t\t\t\tnext = next.nextSibling;\n\t\t\t\t}\n\n\t\t\t\tchanges = changes.reverse();\n\n\t\t\t\tfor ( let item of changes ) {\n\t\t\t\t\tbatch.setAttribute( item.element, 'indent', item.indent );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Phew! Now it will be easier :).\n\t\t\t// For each block element that was in the selection, we will either: turn it to list item,\n\t\t\t// turn it to paragraph, or change it's type. Or leave it as it is.\n\t\t\tfor ( let element of blocks ) {\n\t\t\t\tif ( turnOff && element.name == 'listItem' ) {\n\t\t\t\t\t// We are turning off and the element is a `listItem` - it should be converted to `paragraph`.\n\t\t\t\t\t// The order is important to keep model in correct state.\n\t\t\t\t\tbatch.rename( element, 'paragraph' ).removeAttribute( element, 'type' ).removeAttribute( element, 'indent' );\n\t\t\t\t} else if ( !turnOff && element.name != 'listItem' ) {\n\t\t\t\t\t// We are turning on and the element is not a `listItem` - it should be converted to `listItem`.\n\t\t\t\t\t// The order is important to keep model in correct state.\n\t\t\t\t\tbatch.setAttribute( element, 'type', this.type ).setAttribute( element, 'indent', 0 ).rename( element, 'listItem' );\n\t\t\t\t} else if ( !turnOff && element.name == 'listItem' && element.getAttribute( 'type' ) != this.type ) {\n\t\t\t\t\t// We are turning on and the element is a `listItem` but has different type - change type.\n\t\t\t\t\tbatch.setAttribute( element, 'type', this.type );\n\t\t\t\t}\n\t\t\t}\n\t\t} );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\t_checkEnabled() {\n\t\t// If command is enabled it means that we are in list item, so the command should be enabled.\n\t\tif ( this.value ) {\n\t\t\treturn true;\n\t\t}\n\n\t\tconst selection = this.editor.document.selection;\n\t\tconst schema = this.editor.document.schema;\n\n\t\tconst firstBlock = selection.getSelectedBlocks().next().value;\n\n\t\tif ( !firstBlock ) {\n\t\t\treturn false;\n\t\t}\n\n\t\t// Otherwise, check if list item can be inserted at the position start.\n\t\treturn schema.check( {\n\t\t\tname: 'listItem',\n\t\t\tattributes: [ 'type', 'indent' ],\n\t\t\tinside: Position.createBefore( firstBlock )\n\t\t} );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-list/src/listcommand.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module list/viewlistitemelement\n */\n\nimport ViewContainerElement from '@ckeditor/ckeditor5-engine/src/view/containerelement';\n\n/**\n * View element class representing list item (`<li>`). It extends {@link module:engine/view/containerelement~ContainerElement}\n * and overwrites {@link module:list/viewlistitemelement~ViewListItemElement#getFillerOffset evaluating whether filler offset}\n * is needed.\n *\n * @extends module:engine/view/containerelement~ContainerElement\n */\nexport default class ViewListItemElement extends ViewContainerElement {\n\t/**\n\t * Creates `<li>` view item.\n\t *\n\t * @param {Object|Iterable} [attrs] Collection of attributes.\n\t * @param {module:engine/view/node~Node|Iterable.<module:engine/view/node~Node>} [children] List of nodes to be inserted\n\t * into created element.\n\t */\n\tconstructor( attrs, children ) {\n\t\tsuper( 'li', attrs, children );\n\n\t\t/**\n\t\t * @inheritDoc\n\t\t */\n\t\tthis.getFillerOffset = getFillerOffset;\n\t}\n}\n\n// Implementation of getFillerOffset for ViewListItemElements.\n//\n// @returns {Number|null} Block filler offset or `null` if block filler is not needed.\nfunction getFillerOffset() {\n\t/*jshint validthis:true */\n\tconst hasOnlyLists = !this.isEmpty && ( this.getChild( 0 ).name == 'ul' || this.getChild( 0 ).name == 'ol' );\n\n\treturn this.isEmpty || hasOnlyLists ? 0 : null;\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-list/src/viewlistitemelement.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module presets/article\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\n\nimport EssentialsPreset from './essentials';\n\nimport Paragraph from '@ckeditor/ckeditor5-paragraph/src/paragraph';\nimport Bold from '@ckeditor/ckeditor5-basic-styles/src/bold';\nimport Heading from '@ckeditor/ckeditor5-heading/src/heading';\nimport Image from '@ckeditor/ckeditor5-image/src/image';\nimport ImageCaption from '@ckeditor/ckeditor5-image/src/imagecaption';\nimport ImageStyle from '@ckeditor/ckeditor5-image/src/imagestyle';\nimport ImageToolbar from '@ckeditor/ckeditor5-image/src/imagetoolbar';\nimport Italic from '@ckeditor/ckeditor5-basic-styles/src/italic';\nimport Link from '@ckeditor/ckeditor5-link/src/link';\nimport List from '@ckeditor/ckeditor5-list/src/list';\n\n/**\n * Article editor preset. Represents a set of features which enable in the editor\n * all functionalities of a simple article editor.\n * This preset follows [Editor Recommendations](https://github.com/ckeditor/editor-recommendations).\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class Article extends Plugin {\n\tstatic get requires() {\n\t\treturn [ EssentialsPreset, Paragraph, Bold, Heading, Image, ImageCaption, ImageStyle, ImageToolbar, Italic, Link, List ];\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-presets/src/article.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module presets/essentials\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\n\nimport Clipboard from '@ckeditor/ckeditor5-clipboard/src/clipboard';\nimport Enter from '@ckeditor/ckeditor5-enter/src/enter';\nimport Typing from '@ckeditor/ckeditor5-typing/src/typing';\nimport Undo from '@ckeditor/ckeditor5-undo/src/undo';\n\n/**\n * Essential editing features preset. Represents a set of features which enable in the editor\n * similar functionalities to a `<textarea>`.\n *\n * It includes: {@link module:clipboard/clipboard~Clipboard}, {@link module:enter/enter~Enter},\n * {@link module:typing/typing~Typing}, {@link module:undo/undo~Undo}.\n *\n * This preset does not define any block-level containers (such as {@link module:paragraph/paragraph~Paragraph}).\n * If your editor is supposed to handle block content, make sure to include it. You can also inlcude\n * the {@link module:presets/article~Article article preset}.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class Essentials extends Plugin {\n\tstatic get requires() {\n\t\treturn [ Clipboard, Enter, Typing, Undo ];\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-presets/src/essentials.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module typing/delete\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport DeleteCommand from './deletecommand';\nimport DeleteObserver from './deleteobserver';\n\n/**\n * The delete and backspace feature. Handles the <kbd>Delete</kbd> and <kbd>Backspace</kbd> keys in the editor.\n *\n * @extends core.Plugin\n */\nexport default class Delete extends Plugin {\n\tinit() {\n\t\tconst editor = this.editor;\n\t\tconst editingView = editor.editing.view;\n\n\t\teditingView.addObserver( DeleteObserver );\n\n\t\teditor.commands.set( 'forwardDelete', new DeleteCommand( editor, 'forward' ) );\n\t\teditor.commands.set( 'delete', new DeleteCommand( editor, 'backward' ) );\n\n\t\tthis.listenTo( editingView, 'delete', ( evt, data ) => {\n\t\t\teditor.execute( data.direction == 'forward' ? 'forwardDelete' : 'delete', { unit: data.unit } );\n\t\t\tdata.preventDefault();\n\t\t} );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-typing/src/delete.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module typing/deletecommand\n */\n\nimport Command from '@ckeditor/ckeditor5-core/src/command/command';\nimport Selection from '@ckeditor/ckeditor5-engine/src/model/selection';\nimport ChangeBuffer from './changebuffer';\nimport count from '@ckeditor/ckeditor5-utils/src/count';\n\n/**\n * The delete command. Used by the {@link module:typing/delete~Delete delete feature} to handle the <kbd>Delete</kbd> and\n * <kbd>Backspace</kbd> keys.\n *\n * @extends core.command.Command\n */\nexport default class DeleteCommand extends Command {\n\t/**\n\t * Creates an instance of the command.\n\t *\n\t * @param {module:core/editor/editor~Editor} editor\n\t * @param {'forward'|'backward'} direction The directionality of the delete describing in what direction it\n\t * should consume the content when the selection is collapsed.\n\t */\n\tconstructor( editor, direction ) {\n\t\tsuper( editor );\n\n\t\t/**\n\t\t * The directionality of the delete describing in what direction it should\n\t\t * consume the content when the selection is collapsed.\n\t\t *\n\t\t * @readonly\n\t\t * @member {'forward'|'backward'} #direction\n\t\t */\n\t\tthis.direction = direction;\n\n\t\t/**\n\t\t * Delete's change buffer used to group subsequent changes into batches.\n\t\t *\n\t\t * @readonly\n\t\t * @private\n\t\t * @member {typing.ChangeBuffer} #buffer\n\t\t */\n\t\tthis._buffer = new ChangeBuffer( editor.document, editor.config.get( 'undo.step' ) );\n\t}\n\n\t/**\n\t * Executes the delete command. Depending on whether the selection is collapsed or not, deletes its content\n\t * or a piece of content in the {@link #direction defined direction}.\n\t *\n\t * @param {Object} [options] The command options.\n\t * @param {'character'} [options.unit='character'] See {@link module:engine/controller/modifyselection~modifySelection}'s\n\t * options.\n\t */\n\t_doExecute( options = {} ) {\n\t\tconst doc = this.editor.document;\n\t\tconst dataController = this.editor.data;\n\n\t\tdoc.enqueueChanges( () => {\n\t\t\tconst selection = Selection.createFromSelection( doc.selection );\n\n\t\t\t// Try to extend the selection in the specified direction.\n\t\t\tif ( selection.isCollapsed ) {\n\t\t\t\tdataController.modifySelection( selection, { direction: this.direction, unit: options.unit } );\n\t\t\t}\n\n\t\t\t// If selection is still collapsed, then there's nothing to delete.\n\t\t\tif ( selection.isCollapsed ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tlet changeCount = 0;\n\n\t\t\tselection.getFirstRange().getMinimalFlatRanges().forEach( ( range ) => {\n\t\t\t\tchangeCount += count(\n\t\t\t\t\trange.getWalker( { singleCharacters: true, ignoreElementEnd: true, shallow: true } )\n\t\t\t\t);\n\t\t\t} );\n\n\t\t\tdataController.deleteContent( selection, this._buffer.batch, { merge: true } );\n\t\t\tthis._buffer.input( changeCount );\n\n\t\t\tdoc.selection.setRanges( selection.getRanges(), selection.isBackward );\n\t\t} );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-typing/src/deletecommand.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module typing/deleteobserver\n */\n\nimport Observer from '@ckeditor/ckeditor5-engine/src/view/observer/observer';\nimport DomEventData from '@ckeditor/ckeditor5-engine/src/view/observer/domeventdata';\nimport { keyCodes } from '@ckeditor/ckeditor5-utils/src/keyboard';\n\n/**\n * Delete observer introduces the {@link module:engine/view/document~Document#event:delete} event.\n *\n * @extends engine.view.observer.Observer\n */\nexport default class DeleteObserver extends Observer {\n\tconstructor( document ) {\n\t\tsuper( document );\n\n\t\tdocument.on( 'keydown', ( evt, data ) => {\n\t\t\tconst deleteData = {};\n\n\t\t\tif ( data.keyCode == keyCodes.delete ) {\n\t\t\t\tdeleteData.direction = 'forward';\n\t\t\t\tdeleteData.unit = 'character';\n\t\t\t} else if ( data.keyCode == keyCodes.backspace ) {\n\t\t\t\tdeleteData.direction = 'backward';\n\t\t\t\tdeleteData.unit = 'codePoint';\n\t\t\t} else {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tdeleteData.unit = data.altKey ? 'word' : deleteData.unit;\n\n\t\t\tdocument.fire( 'delete', new DomEventData( document, data.domEvent, deleteData ) );\n\t\t} );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tobserve() {}\n}\n\n/**\n * Event fired when the user tries to delete content (e.g. presses <kbd>Delete</kbd> or <kbd>Backspace</kbd>).\n *\n * Note: This event is fired by the {@link module:typing/deleteobserver~DeleteObserver observer}\n * (usually registered by the {@link module:typing/delete~Delete delete feature}).\n *\n * @event module:engine/view/document~Document#event:delete\n * @param {module:engine/view/observer/domeventdata~DomEventData} data\n * @param {'forward'|'delete'} data.direction The direction in which the deletion should happen.\n * @param {'character'|'word'} data.unit The \"amount\" of content that should be deleted.\n */\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-typing/src/deleteobserver.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module typing/input\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport ModelRange from '@ckeditor/ckeditor5-engine/src/model/range';\nimport ViewPosition from '@ckeditor/ckeditor5-engine/src/view/position';\nimport ViewText from '@ckeditor/ckeditor5-engine/src/view/text';\nimport diff from '@ckeditor/ckeditor5-utils/src/diff';\nimport diffToChanges from '@ckeditor/ckeditor5-utils/src/difftochanges';\nimport { getCode } from '@ckeditor/ckeditor5-utils/src/keyboard';\nimport InputCommand from './inputcommand';\n\n/**\n * Handles text input coming from the keyboard or other input methods.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class Input extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tconst editor = this.editor;\n\t\tconst editingView = editor.editing.view;\n\t\tconst inputCommand = new InputCommand( editor, editor.config.get( 'typing.undoStep' ) || 20 );\n\n\t\t// TODO The above default configuration value should be defined using editor.config.define() once it's fixed.\n\n\t\teditor.commands.set( 'input', inputCommand );\n\n\t\tthis.listenTo( editingView, 'keydown', ( evt, data ) => {\n\t\t\tthis._handleKeydown( data, inputCommand.buffer );\n\t\t}, { priority: 'lowest' } );\n\n\t\tthis.listenTo( editingView, 'mutations', ( evt, mutations, viewSelection ) => {\n\t\t\tthis._handleMutations( mutations, viewSelection );\n\t\t} );\n\t}\n\n\t/**\n\t * Handles the keydown event. We need to guess whether such keystroke is going to result\n\t * in typing. If so, then before character insertion happens, any selected content needs\n\t * to be deleted. Otherwise the default browser deletion mechanism would be\n\t * triggered, resulting in:\n\t *\n\t * * Hundreds of mutations which could not be handled.\n\t * * But most importantly, loss of control over how the content is being deleted.\n\t *\n\t * The method is used in a low-priority listener, hence allowing other listeners (e.g. delete or enter features)\n\t * to handle the event.\n\t *\n\t * @private\n\t * @param {module:engine/view/observer/keyobserver~KeyEventData} evtData\n\t * @param {module:typing/changebuffer~ChangeBuffer} buffer\n\t */\n\t_handleKeydown( evtData, buffer ) {\n\t\tconst doc = this.editor.document;\n\n\t\tif ( isSafeKeystroke( evtData ) || doc.selection.isCollapsed ) {\n\t\t\treturn;\n\t\t}\n\n\t\tdoc.enqueueChanges( () => {\n\t\t\tthis.editor.data.deleteContent( doc.selection, buffer.batch );\n\t\t} );\n\t}\n\n\t/**\n\t * Handles DOM mutations.\n\t *\n\t * @private\n\t * @param {Array.<module:engine/view/document~MutatatedText|module:engine/view/document~MutatatedChildren>} mutations\n\t * @param {module:engine/view/selection~Selection|null} viewSelection\n\t */\n\t_handleMutations( mutations, viewSelection ) {\n\t\tnew MutationHandler( this.editor ).handle( mutations, viewSelection );\n\t}\n}\n\n/**\n * Helper class for translating DOM mutations into model changes.\n *\n * @private\n */\nclass MutationHandler {\n\t/**\n\t * Creates an instance of the mutation handler.\n\t *\n\t * @param {module:core/editor/editor~Editor} editor\n\t */\n\tconstructor( editor ) {\n\t\t/**\n\t\t * Editor instance for which mutations are handled.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:core/editor/editor~Editor} #editor\n\t\t */\n\t\tthis.editor = editor;\n\n\t\t/**\n\t\t * The editing controller.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/controller/editingcontroller~EditingController} #editing\n\t\t */\n\t\tthis.editing = this.editor.editing;\n\t}\n\n\t/**\n\t * Handles given mutations.\n\t *\n\t * @param {Array.<module:engine/view/observer/mutationobserver~MutatedText|\n\t * module:engine/view/observer/mutationobserver~MutatatedChildren>} mutations\n\t * @param {module:engine/view/selection~Selection|null} viewSelection\n\t */\n\thandle( mutations, viewSelection ) {\n\t\tfor ( let mutation of mutations ) {\n\t\t\t// Fortunately it will never be both.\n\t\t\tthis._handleTextMutation( mutation, viewSelection );\n\t\t\tthis._handleTextNodeInsertion( mutation );\n\t\t}\n\t}\n\n\t_handleTextMutation( mutation, viewSelection ) {\n\t\tif ( mutation.type != 'text' ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Replace &nbsp; inserted by the browser with normal space.\n\t\t// We want only normal spaces in the model and in the view. Renderer and DOM Converter will be then responsible\n\t\t// for rendering consecutive spaces using &nbsp;, but the model and the view has to be clear.\n\t\t// Other feature may introduce inserting non-breakable space on specific key stroke (for example shift + space).\n\t\t// However then it will be handled outside of mutations, like enter key is.\n\t\t// The replacing is here because it has to be done before `diff` and `diffToChanges` functions, as they\n\t\t// take `newText` and compare it to (cleaned up) view.\n\t\t// It could also be done in mutation observer too, however if any outside plugin would like to\n\t\t// introduce additional events for mutations, they would get already cleaned up version (this may be good or not).\n\t\tconst newText = mutation.newText.replace( /\\u00A0/g, ' ' );\n\t\t// To have correct `diffResult`, we also compare view node text data with &nbsp; replaced by space.\n\t\tconst oldText = mutation.oldText.replace( /\\u00A0/g, ' ' );\n\n\t\tconst diffResult = diff( oldText, newText );\n\n\t\t// Index where the first change happens. Used to set the position from which nodes will be removed and where will be inserted.\n\t\tlet firstChangeAt = null;\n\t\t// Index where the last change happens. Used to properly count how many characters have to be removed and inserted.\n\t\tlet lastChangeAt = null;\n\n\t\t// Get `firstChangeAt` and `lastChangeAt`.\n\t\tfor ( let i = 0; i < diffResult.length; i++ ) {\n\t\t\tconst change = diffResult[ i ];\n\n\t\t\tif ( change != 'equal' ) {\n\t\t\t\tfirstChangeAt = firstChangeAt === null ? i : firstChangeAt;\n\t\t\t\tlastChangeAt = i;\n\t\t\t}\n\t\t}\n\n\t\t// How many characters, starting from `firstChangeAt`, should be removed.\n\t\tlet deletions = 0;\n\t\t// How many characters, starting from `firstChangeAt`, should be inserted (basing on mutation.newText).\n\t\tlet insertions = 0;\n\n\t\tfor ( let i = firstChangeAt; i <= lastChangeAt; i++ ) {\n\t\t\t// If there is no change (equal) or delete, the character is existing in `oldText`. We count it for removing.\n\t\t\tif ( diffResult[ i ] != 'insert' ) {\n\t\t\t\tdeletions++;\n\t\t\t}\n\n\t\t\t// If there is no change (equal) or insert, the character is existing in `newText`. We count it for inserting.\n\t\t\tif ( diffResult[ i ] != 'delete' ) {\n\t\t\t\tinsertions++;\n\t\t\t}\n\t\t}\n\n\t\t// Try setting new model selection according to passed view selection.\n\t\tlet modelSelectionPosition = null;\n\n\t\tif ( viewSelection ) {\n\t\t\tmodelSelectionPosition = this.editing.mapper.toModelPosition( viewSelection.anchor );\n\t\t}\n\n\t\t// Get the position in view and model where the changes will happen.\n\t\tconst viewPos = new ViewPosition( mutation.node, firstChangeAt );\n\t\tconst modelPos = this.editing.mapper.toModelPosition( viewPos );\n\t\tconst removeRange = ModelRange.createFromPositionAndShift( modelPos, deletions );\n\t\tconst insertText = newText.substr( firstChangeAt, insertions );\n\n\t\tthis.editor.execute( 'input', {\n\t\t\ttext: insertText,\n\t\t\trange: removeRange,\n\t\t\tresultPosition: modelSelectionPosition\n\t\t} );\n\t}\n\n\t_handleTextNodeInsertion( mutation ) {\n\t\tif ( mutation.type != 'children' ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// One new node.\n\t\tif ( mutation.newChildren.length - mutation.oldChildren.length != 1 ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Which is text.\n\t\tconst diffResult = diff( mutation.oldChildren, mutation.newChildren, compareChildNodes );\n\t\tconst changes = diffToChanges( diffResult, mutation.newChildren );\n\n\t\t// In case of [ delete, insert, insert ] the previous check will not exit.\n\t\tif ( changes.length > 1 ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst change = changes[ 0 ];\n\n\t\t// Which is text.\n\t\tif ( !( change.values[ 0 ] instanceof ViewText ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst viewPos = new ViewPosition( mutation.node, change.index );\n\t\tconst modelPos = this.editing.mapper.toModelPosition( viewPos );\n\t\tconst insertedText = change.values[ 0 ].data;\n\n\t\tthis.editor.execute( 'input', {\n\t\t\t// Replace &nbsp; inserted by the browser with normal space.\n\t\t\t// See comment in `_handleTextMutation`.\n\t\t\t// In this case we don't need to do this before `diff` because we diff whole nodes.\n\t\t\t// Just change &nbsp; in case there are some.\n\t\t\ttext: insertedText.replace( /\\u00A0/g, ' ' ),\n\t\t\trange: new ModelRange( modelPos )\n\t\t} );\n\t}\n}\n\nconst safeKeycodes = [\n\tgetCode( 'arrowUp' ),\n\tgetCode( 'arrowRight' ),\n\tgetCode( 'arrowDown' ),\n\tgetCode( 'arrowLeft' ),\n\t9,  // Tab\n\t16, // Shift\n\t17, // Ctrl\n\t18, // Alt\n\t20, // CapsLock\n\t27, // Escape\n\t33, // PageUp\n\t34, // PageDown\n\t35, // Home\n\t36, // End\n];\n\n// Function keys.\nfor ( let code = 112; code <= 135; code++ ) {\n\tsafeKeycodes.push( code );\n}\n\n// Returns `true` if a keystroke should not cause any content change caused by \"typing\".\n//\n// Note: This implementation is very simple and will need to be refined with time.\n//\n// @param {engine.view.observer.keyObserver.KeyEventData} keyData\n// @returns {Boolean}\nfunction isSafeKeystroke( keyData ) {\n\t// Keystrokes which contain Ctrl don't represent typing.\n\tif ( keyData.ctrlKey ) {\n\t\treturn true;\n\t}\n\n\treturn safeKeycodes.includes( keyData.keyCode );\n}\n\n// Helper function that compares whether two given view nodes are same. It is used in `diff` when it's passed an array\n// with child nodes.\nfunction compareChildNodes( oldChild, newChild ) {\n\tif ( oldChild instanceof ViewText && newChild instanceof ViewText ) {\n\t\treturn oldChild.data === newChild.data;\n\t} else {\n\t\treturn oldChild === newChild;\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-typing/src/input.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module typing/inputcommand\n */\n\nimport Command from '@ckeditor/ckeditor5-core/src/command/command';\nimport ChangeBuffer from './changebuffer';\n\n/**\n * The input command. Used by the {@link module:typing/input~Input input feature} to handle typing.\n *\n * @extends module:core/command/command~Command\n */\nexport default class InputCommand extends Command {\n\t/**\n\t * Creates an instance of the command.\n\t *\n\t * @param {module:core/editor/editor~Editor} editor\n\t * @param {Number} undoStepSize The maximum number of atomic changes\n\t * which can be contained in one batch in the command buffer.\n\t */\n\tconstructor( editor, undoStepSize ) {\n\t\tsuper( editor );\n\n\t\t/**\n\t\t * Typing's change buffer used to group subsequent changes into batches.\n\t\t *\n\t\t * @readonly\n\t\t * @private\n\t\t * @member {module:typing/changebuffer~ChangeBuffer} #_buffer\n\t\t */\n\t\tthis._buffer = new ChangeBuffer( editor.document, undoStepSize );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tdestroy() {\n\t\tsuper.destroy();\n\n\t\tthis._buffer.destroy();\n\t\tthis._buffer = null;\n\t}\n\n\t/**\n\t * The current change buffer.\n\t *\n\t * @type {module:typing/changebuffer~ChangeBuffer}\n\t */\n\tget buffer() {\n\t\treturn this._buffer;\n\t}\n\n\t/**\n\t * Executes the input command. It replaces the content within the given range with the given text.\n\t * Replacing is a two step process, first content within the range is removed and then new text is inserted\n\t * on the beginning of the range (which after removal is a collapsed range).\n\t *\n\t * @param {Object} [options] The command options.\n\t * @param {String} [options.text=''] Text to be inserted.\n\t * @param {module:engine/model/range~Range} [options.range] Range in which the text is inserted. Defaults\n\t * to the first range in the current selection.\n\t * @param {module:engine/model/position~Position} [options.resultPosition] Position at which the selection\n\t * should be placed after the insertion. If not specified, the selection will be placed right after\n\t * the inserted text.\n\t */\n\t_doExecute( options = {} ) {\n\t\tconst doc = this.editor.document;\n\t\tconst text = options.text || '';\n\t\tconst textInsertions = text.length;\n\t\tconst range = options.range || doc.selection.getFirstRange();\n\t\tconst resultPosition = options.resultPosition;\n\n\t\tdoc.enqueueChanges( () => {\n\t\t\tconst isCollapsedRange = range.isCollapsed;\n\n\t\t\tif ( !isCollapsedRange ) {\n\t\t\t\tthis._buffer.batch.remove( range );\n\t\t\t}\n\n\t\t\tthis._buffer.batch.weakInsert( range.start, text );\n\n\t\t\tif ( resultPosition ) {\n\t\t\t\tthis.editor.data.model.selection.collapse( resultPosition );\n\t\t\t} else if ( isCollapsedRange ) {\n\t\t\t\t// If range was collapsed just shift the selection by the number of inserted characters.\n\t\t\t\tthis.editor.data.model.selection.collapse( range.start.getShiftedBy( textInsertions ) );\n\t\t\t}\n\n\t\t\tthis._buffer.input( textInsertions );\n\t\t} );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-typing/src/inputcommand.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module typing/typing\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport Input from './input';\nimport Delete from './delete';\n\n/**\n * The typing feature. Handles typing.\n *\n * @extends core.Plugin\n */\nexport default class Typing extends Plugin {\n\tstatic get requires() {\n\t\treturn [ Input, Delete ];\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-typing/src/typing.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/bindings/escpresshandler\n */\n\n/* global document */\n\nimport { keyCodes } from '@ckeditor/ckeditor5-utils/src/keyboard';\n\n/**\n * Detects <kbd>Esc</kbd> `keydown` DOM event and fires an action.\n *\n * @param {Object} options Configuration options.\n * @param {module:utils/dom/emittermixin~Emitter} options.emitter The emitter to which this behavior should be added.\n * @param {Function} options.activator Function returning a `Boolean`, to determine whether handler is active.\n * @param {Function} options.callback Function fired after <kbd>Esc</kbd> is pressed.\n */\nexport default function escPressHandler( { emitter, activator, callback } ) {\n\temitter.listenTo( document, 'keydown', ( evt, { keyCode } ) => {\n\t\tif ( keyCode == keyCodes.esc && activator() ) {\n\t\t\tcallback();\n\t\t}\n\t} );\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-ui/src/bindings/escpresshandler.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/componentfactory\n */\n\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\n\n/**\n * Class implementing the UI component factory.\n *\n * Factories of specific UI components can be registered under their unique names. Registered\n * components can be later instantiated by providing the name of the component.\n *\n * The main use case for the component factory is the {@link module:core/editor/editorui~EditorUI#componentFactory} factory.\n */\nexport default class ComponentFactory {\n\t/**ś\n\t * Creates ComponentFactory instance.\n\t *\n\t * @constructor\n\t * @param {module:core/editor/editor~Editor} editor The editor instance.\n\t */\n\tconstructor( editor ) {\n\t\t/**\n\t\t * The editor instance.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:core/editor/editor~Editor}\n\t\t */\n\t\tthis.editor = editor;\n\n\t\t/**\n\t\t * Registered component factories.\n\t\t *\n\t\t * @private\n\t\t * @member {Map}\n\t\t */\n\t\tthis._components = new Map();\n\t}\n\n\t/**\n\t * Registers a component factory.\n\t *\n\t * @param {String} name The name of the component.\n\t * @param {Function} ControllerClass The component controller constructor.\n\t * @param {Function} ViewClass The component view constructor.\n\t * @param {Function} [callback] The callback to process the view instance,\n\t * i.e. to set attribute values, create attribute bindings, etc.\n\t */\n\tadd( name, callback ) {\n\t\tif ( this._components.get( name ) ) {\n\t\t\tthrow new CKEditorError(\n\t\t\t\t'componentfactory-item-exists: The item already exists in the component factory.', { name }\n\t\t\t);\n\t\t}\n\n\t\tthis._components.set( name, callback );\n\t}\n\n\t/**\n\t * Creates a component view instance.\n\t *\n\t * @param {String} name The name of the component.\n\t * @returns {module:ui/view~View} The instantiated component view.\n\t */\n\tcreate( name ) {\n\t\treturn this._components.get( name )( this.editor.locale );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-ui/src/componentfactory.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/dropdown/createdropdown\n */\n\nimport ButtonView from '../button/buttonview';\nimport DropdownView from './dropdownview';\nimport DropdownPanelView from './dropdownpanelview';\n\n/**\n * Creates an instance of {@link module:ui/dropdown/dropdownview~DropdownView} class using\n * defined model.\n *\n * @param {module:ui/dropdown/dropdownmodel~DropdownModel} model Model of this dropdown.\n * @param {module:utils/locale~Locale} locale The locale instance.\n * @returns {module:ui/dropdown/dropdownview~DropdownView} The dropdown view instance.\n */\nexport default function createDropdown( model, locale ) {\n\tconst buttonView = new ButtonView( locale );\n\tbuttonView.bind( 'label', 'isOn', 'isEnabled', 'withText', 'keystroke', 'tooltip' ).to( model );\n\n\tconst panelView = new DropdownPanelView( locale );\n\n\treturn new DropdownView( locale, buttonView, panelView );\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-ui/src/dropdown/createdropdown.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/dropdown/dropdownpanelview\n */\n\nimport View from '../view';\nimport Template from '../template';\n\n/**\n * The dropdown panel view class.\n *\n * @extends module:ui/view~View\n */\nexport default class DropdownPanelView extends View {\n\t/**\n\t * @inheritDoc\n\t */\n\tconstructor( locale ) {\n\t\tsuper( locale );\n\n\t\tconst bind = this.bindTemplate;\n\n\t\t/**\n\t\t * Controls whether the panel is visible.\n\t\t *\n\t\t * @observable\n\t\t * @member {Boolean} #isVisible\n\t\t */\n\t\tthis.set( 'isVisible', false );\n\n\t\t/**\n\t\t * Collection of the child views.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:ui/viewcollection~ViewCollection}\n\t\t */\n\t\tthis.children = this.createCollection();\n\n\t\tthis.template = new Template( {\n\t\t\ttag: 'div',\n\n\t\t\tattributes: {\n\t\t\t\tclass: [\n\t\t\t\t\t'ck-reset',\n\t\t\t\t\t'ck-dropdown__panel',\n\t\t\t\t\tbind.if( 'isVisible', 'ck-dropdown__panel-visible' )\n\t\t\t\t]\n\t\t\t},\n\n\t\t\tchildren: this.children\n\t\t} );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-ui/src/dropdown/dropdownpanelview.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/dropdown/dropdownview\n */\n\nimport View from '../view';\nimport Template from '../template';\nimport FocusTracker from '@ckeditor/ckeditor5-utils/src/focustracker';\nimport KeystrokeHandler from '@ckeditor/ckeditor5-utils/src/keystrokehandler';\n\n/**\n * The dropdown view class.\n *\n * @extends module:ui/view~View\n */\nexport default class DropdownView extends View {\n\t/**\n\t * @inheritDoc\n\t */\n\tconstructor( locale, buttonView, panelView ) {\n\t\tsuper( locale );\n\n\t\t// Extend button's template before it's registered as a child of the dropdown because\n\t\t// by doing so, its #element is rendered and any post–render template extension will\n\t\t// not be reflected in DOM.\n\t\tTemplate.extend( buttonView.template, {\n\t\t\tattributes: {\n\t\t\t\tclass: [\n\t\t\t\t\t'ck-dropdown__button'\n\t\t\t\t]\n\t\t\t}\n\t\t} );\n\n\t\t/**\n\t\t * Button of this dropdown view.\n\t\t *\n\t\t * @readonly\n\t\t * @member {ui.button.ButtonView} #buttonView\n\t\t */\n\t\tthis.buttonView = buttonView;\n\n\t\t/**\n\t\t * Panel of this dropdown view.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:ui/dropdown/dropdownpanelview~DropdownPanelView} #panelView\n\t\t */\n\t\tthis.panelView = panelView;\n\n\t\t/**\n\t\t * Controls whether the dropdown view is open, which also means its\n\t\t * {@link #panelView panel} is visible.\n\t\t *\n\t\t * @observable\n\t\t * @member {Boolean} #isOpen\n\t\t */\n\t\tthis.set( 'isOpen', false );\n\n\t\t/**\n\t\t * Tracks information about DOM focus in the list.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:utils/focustracker~FocusTracker}\n\t\t */\n\t\tthis.focusTracker = new FocusTracker();\n\n\t\t/**\n\t\t * Instance of the {@link module:core/keystrokehandler~KeystrokeHandler}.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:core/keystrokehandler~KeystrokeHandler}\n\t\t */\n\t\tthis.keystrokes = new KeystrokeHandler();\n\n\t\tthis.template = new Template( {\n\t\t\ttag: 'div',\n\n\t\t\tattributes: {\n\t\t\t\tclass: [\n\t\t\t\t\t'ck-dropdown'\n\t\t\t\t]\n\t\t\t},\n\n\t\t\tchildren: [\n\t\t\t\tbuttonView,\n\t\t\t\tpanelView\n\t\t\t]\n\t\t} );\n\n\t\t// Toggle the the dropdown when it's button has been clicked.\n\t\tthis.listenTo( buttonView, 'execute', () => this.isOpen = !this.isOpen );\n\n\t\t// Toggle the visibility of the panel when the dropdown becomes open.\n\t\tpanelView.bind( 'isVisible' ).to( this, 'isOpen' );\n\n\t\t/**\n\t\t * The label of the dropdown.\n\t\t *\n\t\t * @observable\n\t\t * @member {String} #label\n\t\t */\n\n\t\t/**\n\t\t * Controls whether the dropdown is enabled (can be clicked).\n\t\t *\n\t\t * @observable\n\t\t * @member {Boolean} #isEnabled\n\t\t */\n\n\t\t/**\n\t\t * Controls whether the {@link #buttonView} is \"pushed\".\n\t\t *\n\t\t * @observable\n\t\t * @member {Boolean} #isOn\n\t\t */\n\n\t\t/**\n\t\t * (Optional) Whether the label of the dropdown is visible. See {@link module:ui/button/buttonview~ButtonView#withText}.\n\t\t *\n\t\t * @observable\n\t\t * @member {Boolean} #withText\n\t\t */\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\t// Listen for keystrokes coming from within #element.\n\t\tthis.keystrokes.listenTo( this.element );\n\n\t\t// Register #element in the focus tracker.\n\t\tthis.focusTracker.add( this.element );\n\n\t\tconst closeDropdown = ( data, cancel ) => {\n\t\t\tif ( this.isOpen ) {\n\t\t\t\tthis.buttonView.focus();\n\t\t\t\tthis.isOpen = false;\n\t\t\t\tcancel();\n\t\t\t}\n\t\t};\n\n\t\t// Open the dropdown panel using the arrow down key, just like with return or space.\n\t\tthis.keystrokes.set( 'arrowdown', ( data, cancel ) => {\n\t\t\tif ( !this.isOpen ) {\n\t\t\t\tthis.isOpen = true;\n\t\t\t\tcancel();\n\t\t\t}\n\t\t} );\n\n\t\t// Block the right arrow key (until nested dropdowns are implemented).\n\t\tthis.keystrokes.set( 'arrowright', ( data, cancel ) => {\n\t\t\tif ( this.isOpen ) {\n\t\t\t\tcancel();\n\t\t\t}\n\t\t} );\n\n\t\t// Close the dropdown using the arrow left/escape key.\n\t\tthis.keystrokes.set( 'arrowleft', closeDropdown );\n\t\tthis.keystrokes.set( 'esc', closeDropdown );\n\n\t\treturn super.init();\n\t}\n\n\t/**\n\t * Focuses the {@link #buttonView}.\n\t */\n\tfocus() {\n\t\tthis.buttonView.focus();\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-ui/src/dropdown/dropdownview.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/dropdown/list/createlistdropdown\n */\n\n/* global document */\n\nimport ListView from '../../list/listview';\nimport ListItemView from '../../list/listitemview';\nimport createDropdown from '../createdropdown';\n\n/**\n * Creates an instance of {@link module:ui/dropdown/list/listdropdownview~ListDropdownView} class using\n * defined model.\n *\n * @param {module:ui/dropdown/list/listdropdownmodel~ListDropdownModel} model Model of this list dropdown.\n * @param {module:utils/locale~Locale} locale The locale instance.\n * @returns {module:ui/dropdown/list/listdropdownview~ListDropdownView} The list dropdown view instance.\n */\nexport default function createListDropdown( model, locale ) {\n\tconst dropdownView = createDropdown( model, locale );\n\n\tconst listView = dropdownView.listView = new ListView( locale );\n\n\tlistView.items.bindTo( model.items ).as( itemModel => {\n\t\tconst item = new ListItemView( locale );\n\n\t\t// Bind all attributes of the model to the item view.\n\t\titem.bind( ...Object.keys( itemModel ) ).to( itemModel );\n\n\t\treturn item;\n\t} );\n\n\t// TODO: Delegate all events instead of just execute.\n\tlistView.items.delegate( 'execute' ).to( dropdownView );\n\n\tdropdownView.panelView.children.add( listView );\n\n\tdropdownView.on( 'change:isOpen', ( evt, name, value ) => {\n\t\tif ( value ) {\n\t\t\tattachDocumentClickListener( dropdownView );\n\t\t} else {\n\t\t\tdropdownView.stopListening( document );\n\t\t}\n\t} );\n\n\t// Close the dropdown when one of the list items has been executed.\n\tdropdownView.on( 'execute', () => {\n\t\tdropdownView.isOpen = false;\n\t} );\n\n\t// If the dropdown panel is already open, the arrow down key should\n\t// focus the first element in list.\n\tdropdownView.keystrokes.set( 'arrowdown', ( data, cancel ) => {\n\t\tif ( dropdownView.isOpen ) {\n\t\t\tlistView.focus();\n\t\t\tcancel();\n\t\t}\n\t} );\n\n\t// If the dropdown panel is already open, the arrow up key should\n\t// focus the last element in the list.\n\tdropdownView.keystrokes.set( 'arrowup', ( data, cancel ) => {\n\t\tif ( dropdownView.isOpen ) {\n\t\t\tlistView.focusLast();\n\t\t\tcancel();\n\t\t}\n\t} );\n\n\treturn dropdownView;\n}\n\n// Attaches a \"click\" listener in DOM to check if any element outside\n// the dropdown has been clicked.\n//\n// @private\n// @param {module:ui/dropdown/listdropdownview~ListDropdownView} dropdownView\nfunction attachDocumentClickListener( dropdownView ) {\n\t// TODO: It will probably be focus/blur-based rather than click. It should be bound\n\t// to focusmanager of some sort.\n\tdropdownView.listenTo( document, 'click', ( evtInfo, { target: domEvtTarget } ) => {\n\t\t// Collapse the dropdown when the webpage outside of the component is clicked.\n\t\tif ( dropdownView.element != domEvtTarget && !dropdownView.element.contains( domEvtTarget ) ) {\n\t\t\tdropdownView.isOpen = false;\n\t\t}\n\t} );\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-ui/src/dropdown/list/createlistdropdown.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/editableui/editableuiview\n */\n\nimport View from '../view';\nimport Template from '../template';\n\n/**\n * The editable UI view class.\n *\n * @extends module:ui/view~View\n */\nexport default class EditableUIView extends View {\n\t/**\n\t * Creates an instance of EditableUIView class.\n\t *\n\t * @param {module:utils/locale~Locale} [locale] The locale instance.\n\t * @param {HTMLElement} [editableElement] The editable element. If not specified, this view\n\t * should create it. Otherwise, the existing element should be used.\n\t */\n\tconstructor( locale, editableElement ) {\n\t\tsuper( locale );\n\n\t\tconst bind = this.bindTemplate;\n\n\t\tif ( editableElement ) {\n\t\t\tthis.element = this.editableElement = editableElement;\n\t\t}\n\n\t\tthis.template = new Template( {\n\t\t\ttag: 'div',\n\t\t\tattributes: {\n\t\t\t\tclass: [\n\t\t\t\t\tbind.to( 'isFocused', value => value ? 'ck-focused' : 'ck-blurred' ),\n\t\t\t\t\t'ck-editor__editable'\n\t\t\t\t],\n\t\t\t\tcontenteditable: bind.to( 'isReadOnly', value => !value ),\n\t\t\t}\n\t\t} );\n\n\t\t/**\n\t\t * Controls whether the editable is writable or not.\n\t\t *\n\t\t * @observable\n\t\t * @member {Boolean} #isReadOnly\n\t\t */\n\t\tthis.set( 'isReadOnly', false );\n\n\t\t/**\n\t\t * Controls whether the editable is focused, i.e. the user is typing in it.\n\t\t *\n\t\t * @observable\n\t\t * @member {Boolean} #isFocused\n\t\t */\n\t\tthis.set( 'isFocused', false );\n\n\t\t/**\n\t\t * The element which is the main editable element (usually the one with `contentEditable=\"true\"`).\n\t\t *\n\t\t * @readonly\n\t\t * @member {HTMLElement} #editableElement\n\t\t */\n\t}\n\n\t/**\n\t * Initializes the view by either applying the {@link #template} to the existing\n\t * {@link #editableElement} or assigning {@link #element} as {@link #editableElement}.\n\t *\n\t * @returns {Promise}\n\t */\n\tinit() {\n\t\tif ( this.editableElement ) {\n\t\t\tthis.template.apply( this.editableElement );\n\t\t} else {\n\t\t\tthis.editableElement = this.element;\n\t\t}\n\n\t\treturn super.init();\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tdestroy() {\n\t\tthis.editableElement.contentEditable = false;\n\n\t\treturn super.destroy();\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-ui/src/editableui/editableuiview.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/editableui/inline/inlineeditableuiview\n */\n\nimport EditableUIView from '../../editableui/editableuiview';\nimport Template from '../../template';\n\n/**\n * The inline editable UI class implementing an inline {@link module:ui/editableui/editableuiview~EditableUIView}.\n *\n * @extends module:ui/editableui/editableuiview~EditableUIView\n */\nexport default class InlineEditableUIView extends EditableUIView {\n\t/**\n\t * Creates an instance of the InlineEditableUIView class.\n\t *\n\t * @param {module:utils/locale~Locale} [locale] The locale instance.\n\t * @param {HTMLElement} [editableElement] The editable element. If not specified, the\n\t * {@link module:ui/editableui/editableuiview~EditableUIView}\n\t * should create it. Otherwise, the existing element should be used.\n\t */\n\tconstructor( locale, editableElement ) {\n\t\tsuper( locale, editableElement );\n\n\t\tconst bind = this.bindTemplate;\n\t\tconst t = this.t;\n\n\t\t/**\n\t\t * The name of the editable UI view.\n\t\t *\n\t\t * @observable\n\t\t * @member {String} #name\n\t\t */\n\t\tthis.set( 'name', null );\n\n\t\tconst getLabel = ( value ) => {\n\t\t\treturn t( 'Rich Text Editor, %0', [ value ] );\n\t\t};\n\n\t\tTemplate.extend( this.template, {\n\t\t\tattributes: {\n\t\t\t\trole: 'textbox',\n\t\t\t\t'aria-label': bind.to( 'name', getLabel ),\n\t\t\t\tclass: 'ck-editor__editable_inline'\n\t\t\t}\n\t\t} );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-ui/src/editableui/inline/inlineeditableuiview.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/editorui/boxed/boxededitoruiview\n */\n\nimport EditorUIView from '../../editorui/editoruiview';\nimport uid from '@ckeditor/ckeditor5-utils/src/uid';\nimport Template from '../../template';\n\n/**\n * The boxed editor UI view class. This class represents an editor interface\n * consisting of a toolbar and an editable area, enclosed within a box.\n *\n * @extends module:ui/editorui/editoruiview~EditorUIView\n */\nexport default class BoxedEditorUIView extends EditorUIView {\n\t/**\n\t * Creates an instance of the boxed editor UI view class.\n\t *\n\t * @param {module:utils/locale~Locale} locale The locale instance..\n\t */\n\tconstructor( locale ) {\n\t\tsuper( locale );\n\n\t\tconst t = this.t;\n\t\tconst ariaLabelUid = uid();\n\n\t\t/**\n\t\t * The UI's width.\n\t\t *\n\t\t * @observable\n\t\t * @member {Number} #width\n\t\t */\n\t\tthis.set( 'width', null );\n\n\t\t/**\n\t\t * The UI's height.\n\t\t *\n\t\t * @observable\n\t\t * @member {Number} #height\n\t\t */\n\t\tthis.set( 'height', null );\n\n\t\t/**\n\t\t * Collection of the child views located in the top (`.ck-editor__top`)\n\t\t * area of the UI.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:ui/viewcollection~ViewCollection}\n\t\t */\n\t\tthis.top = this.createCollection();\n\n\t\t/**\n\t\t * Collection of the child views located in the main (`.ck-editor__main`)\n\t\t * area of the UI.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:ui/viewcollection~ViewCollection}\n\t\t */\n\t\tthis.main = this.createCollection();\n\n\t\tthis.template = new Template( {\n\t\t\ttag: 'div',\n\n\t\t\tattributes: {\n\t\t\t\tclass: [\n\t\t\t\t\t'ck-reset',\n\t\t\t\t\t'ck-editor',\n\t\t\t\t\t'ck-rounded-corners'\n\t\t\t\t],\n\t\t\t\trole: 'application',\n\t\t\t\tdir: 'ltr',\n\t\t\t\tlang: locale.lang,\n\t\t\t\t'aria-labelledby': `cke-editor__aria-label_${ ariaLabelUid }`\n\t\t\t},\n\n\t\t\tchildren: [\n\t\t\t\t{\n\t\t\t\t\ttag: 'span',\n\t\t\t\t\tattributes: {\n\t\t\t\t\t\tid: `cke-editor__aria-label_${ ariaLabelUid }`,\n\t\t\t\t\t\tclass: 'cke-voice-label'\n\t\t\t\t\t},\n\t\t\t\t\tchildren: [\n\t\t\t\t\t\t// TODO: Editor name?\n\t\t\t\t\t\tt( 'Rich Text Editor' )\n\t\t\t\t\t]\n\t\t\t\t},\n\t\t\t\t{\n\t\t\t\t\ttag: 'div',\n\t\t\t\t\tattributes: {\n\t\t\t\t\t\tclass: 'ck-editor__top ck-reset_all',\n\t\t\t\t\t\trole: 'presentation'\n\t\t\t\t\t},\n\t\t\t\t\tchildren: this.top\n\t\t\t\t},\n\t\t\t\t{\n\t\t\t\t\ttag: 'div',\n\t\t\t\t\tattributes: {\n\t\t\t\t\t\tclass: 'ck-editor__main',\n\t\t\t\t\t\trole: 'presentation'\n\t\t\t\t\t},\n\t\t\t\t\tchildren: this.main\n\t\t\t\t}\n\t\t\t]\n\t\t} );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-ui/src/editorui/boxed/boxededitoruiview.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/editorui/editoruiview\n */\n\n/* globals document */\n\nimport View from '../view';\nimport Template from '../template';\n\n/**\n * The editor UI view class. Base class for the editor main views.\n *\n * @extends module:ui/view~View\n */\nexport default class EditorUIView extends View {\n\t/**\n\t * Creates an instance of the editor UI view class.\n\t *\n\t * @param {module:utils/locale~Locale} [locale] The locale instance.\n\t */\n\tconstructor( locale ) {\n\t\tsuper( locale );\n\n\t\t/**\n\t\t * Collection of the child views, detached from the DOM\n\t\t * structure of the editor, like panels, icons etc.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:ui/viewcollection~ViewCollection} #body\n\t\t */\n\t\tthis.body = this.createCollection();\n\n\t\t/**\n\t\t * The element holding elements of the 'body' region.\n\t\t *\n\t\t * @private\n\t\t * @member {HTMLElement} #_bodyCollectionContainer\n\t\t */\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\treturn Promise.resolve()\n\t\t\t.then( () => this._renderBodyCollection() )\n\t\t\t.then( () => super.init() );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tdestroy() {\n\t\tthis._bodyCollectionContainer.remove();\n\n\t\treturn super.destroy();\n\t}\n\n\t/**\n\t * Creates and appends to `<body>` the {@link #body} collection container.\n\t *\n\t * @private\n\t */\n\t_renderBodyCollection() {\n\t\tconst bodyElement = this._bodyCollectionContainer = new Template( {\n\t\t\ttag: 'div',\n\t\t\tattributes: {\n\t\t\t\tclass: [\n\t\t\t\t\t'ck-body',\n\t\t\t\t\t'ck-rounded-corners',\n\t\t\t\t\t'ck-reset_all'\n\t\t\t\t]\n\t\t\t},\n\t\t\tchildren: this.body\n\t\t} ).render();\n\n\t\tdocument.body.appendChild( bodyElement );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-ui/src/editorui/editoruiview.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/* global DOMParser */\n\n/**\n * @module ui/icon/iconview\n */\n\nimport View from '../view';\nimport Template from '../template';\n\n/**\n * The icon view class.\n *\n * @extends module:ui/view~View\n */\nexport default class IconView extends View {\n\t/**\n\t * @inheritDoc\n\t */\n\tconstructor() {\n\t\tsuper();\n\n\t\tconst bind = this.bindTemplate;\n\n\t\t/**\n\t\t * The SVG source of the icon.\n\t\t *\n\t\t * @observable\n\t\t * @member {String} #content\n\t\t */\n\t\tthis.set( 'content' );\n\n\t\t/**\n\t\t * This attribute specifies the boundaries to which the\n\t\t * icon content should stretch.\n\t\t *\n\t\t * @observable\n\t\t * @default '0 0 20 20'\n\t\t * @member {String} #viewBox\n\t\t */\n\t\tthis.set( 'viewBox', '0 0 20 20' );\n\n\t\tthis.template = new Template( {\n\t\t\ttag: 'svg',\n\t\t\tns: 'http://www.w3.org/2000/svg',\n\t\t\tattributes: {\n\t\t\t\tclass: 'ck-icon',\n\t\t\t\tviewBox: bind.to( 'viewBox' )\n\t\t\t}\n\t\t} );\n\n\t\t// This is a hack for lack of innerHTML binding.\n\t\t// See: https://github.com/ckeditor/ckeditor5-ui/issues/99.\n\t\tthis.on( 'change:content', ( evt, name, value ) => {\n\t\t\tconst svg = new DOMParser()\n\t\t\t\t.parseFromString( value.trim(), 'image/svg+xml' )\n\t\t\t\t.firstChild;\n\n\t\t\twhile ( svg.childNodes.length > 0 ) {\n\t\t\t\tthis.element.appendChild( svg.childNodes[ 0 ] );\n\t\t\t}\n\t\t} );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-ui/src/icon/iconview.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/label/labelview\n */\n\nimport View from '../view';\nimport Template from '../template';\n\n/**\n * The label view class.\n *\n * @extends module:ui/view~View\n */\nexport default class LabelView extends View {\n\t/**\n\t * @inheritDoc\n\t */\n\tconstructor( locale ) {\n\t\tsuper( locale );\n\n\t\t/**\n\t\t * The text of the label.\n\t\t *\n\t\t * @observable\n\t\t * @member {String} #text\n\t\t */\n\t\tthis.set( 'text' );\n\n\t\t/**\n\t\t * The `for` attribute of the label (i.e. to pair with an `<input>` element).\n\t\t *\n\t\t * @observable\n\t\t * @member {String} #for\n\t\t */\n\t\tthis.set( 'for' );\n\n\t\tconst bind = this.bindTemplate;\n\n\t\tthis.template = new Template( {\n\t\t\ttag: 'label',\n\t\t\tattributes: {\n\t\t\t\tclass: [\n\t\t\t\t\t'ck-label'\n\t\t\t\t],\n\t\t\t\tfor: bind.to( 'for' )\n\t\t\t},\n\t\t\tchildren: [\n\t\t\t\t{\n\t\t\t\t\ttext: bind.to( 'text' )\n\t\t\t\t}\n\t\t\t]\n\t\t} );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-ui/src/label/labelview.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/list/listitemview\n */\n\nimport View from '../view';\nimport Template from '../template';\n\n/**\n * The list item view class.\n *\n * @extends module:ui/view~View\n */\nexport default class ListItemView extends View {\n\t/**\n\t * @inheritDoc\n\t */\n\tconstructor() {\n\t\tsuper();\n\n\t\t/**\n\t\t * Controls the `tabindex` attribute of the item.\n\t\t *\n\t\t * @observable\n\t\t * @default -1\n\t\t * @member {String} #tabindex\n\t\t */\n\t\tthis.set( 'tabindex', -1 );\n\n\t\tconst bind = this.bindTemplate;\n\n\t\tthis.template = new Template( {\n\t\t\ttag: 'li',\n\n\t\t\tattributes: {\n\t\t\t\tclass: [\n\t\t\t\t\t'ck-list__item'\n\t\t\t\t],\n\t\t\t\tstyle: bind.to( 'style' ),\n\t\t\t\ttabindex: bind.to( 'tabindex' )\n\t\t\t},\n\n\t\t\tchildren: [\n\t\t\t\t{\n\t\t\t\t\ttext: bind.to( 'label' )\n\t\t\t\t}\n\t\t\t],\n\n\t\t\ton: {\n\t\t\t\tclick: bind.to( 'execute' )\n\t\t\t}\n\t\t} );\n\n\t\t/**\n\t\t * The label of the list item.\n\t\t *\n\t\t * @observable\n\t\t * @member {String} #label\n\t\t */\n\n\t\t/**\n\t\t * (Optional) The DOM style attribute of the list item.\n\t\t *\n\t\t * @observable\n\t\t * @member {String} #style\n\t\t */\n\n\t\t/**\n\t\t * Fired when the list item has been clicked.\n\t\t *\n\t\t * @event #execute\n\t\t */\n\t}\n\n\t/**\n\t * Focuses the list item.\n\t */\n\tfocus() {\n\t\tthis.element.focus();\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-ui/src/list/listitemview.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/list/listview\n */\n\nimport View from '../view';\nimport Template from '../template';\nimport FocusTracker from '@ckeditor/ckeditor5-utils/src/focustracker';\nimport FocusCycler from '../focuscycler';\nimport KeystrokeHandler from '@ckeditor/ckeditor5-utils/src/keystrokehandler';\n\n/**\n * The list view class.\n *\n * @extends module:ui/view~View\n */\nexport default class ListView extends View {\n\t/**\n\t * @inheritDoc\n\t */\n\tconstructor() {\n\t\tsuper();\n\n\t\t/**\n\t\t * Collection of the child list views.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:ui/viewcollection~ViewCollection}\n\t\t */\n\t\tthis.items = this.createCollection();\n\n\t\t/**\n\t\t * Tracks information about DOM focus in the list.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:utils/focustracker~FocusTracker}\n\t\t */\n\t\tthis.focusTracker = new FocusTracker();\n\n\t\t/**\n\t\t * Instance of the {@link module:core/keystrokehandler~KeystrokeHandler}.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:core/keystrokehandler~KeystrokeHandler}\n\t\t */\n\t\tthis.keystrokes = new KeystrokeHandler();\n\n\t\t/**\n\t\t * Helps cycling over focusable {@link #items} in the list.\n\t\t *\n\t\t * @readonly\n\t\t * @protected\n\t\t * @member {module:ui/focuscycler~FocusCycler}\n\t\t */\n\t\tthis._focusCycler = new FocusCycler( {\n\t\t\tfocusables: this.items,\n\t\t\tfocusTracker: this.focusTracker,\n\t\t\tkeystrokeHandler: this.keystrokes,\n\t\t\tactions: {\n\t\t\t\t// Navigate list items backwards using the arrowup key.\n\t\t\t\tfocusPrevious: 'arrowup',\n\n\t\t\t\t// Navigate toolbar items forwards using the arrowdown key.\n\t\t\t\tfocusNext: 'arrowdown',\n\t\t\t}\n\t\t} );\n\n\t\tthis.template = new Template( {\n\t\t\ttag: 'ul',\n\n\t\t\tattributes: {\n\t\t\t\tclass: [\n\t\t\t\t\t'ck-reset',\n\t\t\t\t\t'ck-list'\n\t\t\t\t]\n\t\t\t},\n\n\t\t\tchildren: this.items\n\t\t} );\n\n\t\tthis.items.on( 'add', ( evt, item ) => {\n\t\t\tthis.focusTracker.add( item.element );\n\t\t} );\n\n\t\tthis.items.on( 'remove', ( evt, item ) => {\n\t\t\tthis.focusTracker.remove( item.element );\n\t\t} );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\t// Start listening for the keystrokes coming from #element.\n\t\tthis.keystrokes.listenTo( this.element );\n\n\t\treturn super.init();\n\t}\n\n\t/**\n\t * Focuses the first focusable in {@link #items}.\n\t */\n\tfocus() {\n\t\tthis._focusCycler.focusFirst();\n\t}\n\n\t/**\n\t * Focuses the last focusable in {@link #items}.\n\t */\n\tfocusLast() {\n\t\tthis._focusCycler.focusLast();\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-ui/src/list/listview.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/model\n */\n\nimport extend from '@ckeditor/ckeditor5-utils/src/lib/lodash/extend';\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\nimport ObservableMixin from '@ckeditor/ckeditor5-utils/src/observablemixin';\n\n/**\n * The base MVC model class.\n *\n * @mixes module:utils/observablemixin~ObservableMixin\n */\nexport default class Model {\n\t/**\n\t * Creates a new Model instance.\n\t *\n\t * @param {Object} [attributes] The model state attributes to be defined during the instance creation.\n\t * @param {Object} [properties] The (out of state) properties to be appended to the instance during creation.\n\t */\n\tconstructor( attributes, properties ) {\n\t\t// Extend this instance with the additional (out of state) properties.\n\t\tif ( properties ) {\n\t\t\textend( this, properties );\n\t\t}\n\n\t\t// Initialize the attributes.\n\t\tif ( attributes ) {\n\t\t\tthis.set( attributes );\n\t\t}\n\t}\n}\n\nmix( Model, ObservableMixin );\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-ui/src/model.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/toolbar/sticky/stickytoolbarview\n */\n\nimport global from '@ckeditor/ckeditor5-utils/src/dom/global';\nimport Template from '../../template';\nimport ToolbarView from '../toolbarview';\nimport toUnit from '@ckeditor/ckeditor5-utils/src/dom/tounit';\n\nconst toPx = toUnit( 'px' );\n\n/**\n * The sticky toolbar view class.\n *\n * @extends module:ui/toolbar/toolbarview~ToolbarView\n */\nexport default class StickyToolbarView extends ToolbarView {\n\t/**\n\t * @inheritDoc\n\t */\n\tconstructor( locale ) {\n\t\tsuper( locale );\n\n\t\tconst bind = this.bindTemplate;\n\n\t\t/**\n\t\t * Controls whether the sticky toolbar should be active. When any editable\n\t\t * is focused in the editor, toolbar becomes active.\n\t\t *\n\t\t * @readonly\n\t\t * @observable\n\t\t * @member {Boolean} #isActive\n\t\t */\n\t\tthis.set( 'isActive', false );\n\n\t\t/**\n\t\t * Controls whether the sticky toolbar is in the \"sticky\" state.\n\t\t *\n\t\t * @readonly\n\t\t * @observable\n\t\t * @member {Boolean} #isSticky\n\t\t */\n\t\tthis.set( 'isSticky', false );\n\n\t\t/**\n\t\t * The limiter element for the sticky toolbar instance. Its bounding rect limits\n\t\t * the \"stickyness\" of the toolbar, i.e. when the toolbar reaches the bottom\n\t\t * edge of the limiter, it becomes sticky to that edge and does not float\n\t\t * off the limiter. It is mandatory for the toolbar to work properly and once\n\t\t * set, it cannot be changed.\n\t\t *\n\t\t * @readonly\n\t\t * @observable\n\t\t * @member {HTMLElement} #limiterElement\n\t\t */\n\t\tthis.set( 'limiterElement', null );\n\n\t\t/**\n\t\t * The offset from the bottom edge of {@link #limiterElement}\n\t\t * which stops the toolbar from stickying any further to prevent limiter's content\n\t\t * from being completely covered.\n\t\t *\n\t\t * @readonly\n\t\t * @observable\n\t\t * @default 50\n\t\t * @member {Number} #limiterOffset\n\t\t */\n\t\tthis.set( 'limiterOffset', 50 );\n\n\t\t/**\n\t\t * Controls the `margin-left` CSS style of the toolbar.\n\t\t *\n\t\t * @protected\n\t\t * @readonly\n\t\t * @observable\n\t\t * @member {String} #_marginLeft\n\t\t */\n\t\tthis.set( '_marginLeft', null );\n\n\t\t/**\n\t\t * Set `true` if the sticky toolbar reached the bottom edge of the\n\t\t * {@link #limiterElement}.\n\t\t *\n\t\t * @protected\n\t\t * @readonly\n\t\t * @observable\n\t\t * @member {Boolean} #_isStickyToTheLimiter\n\t\t */\n\t\tthis.set( '_isStickyToTheLimiter', false );\n\n\t\t/**\n\t\t * The DOM bounding client rect of the {@link module:ui/view~View#element} of the toolbar.\n\t\t *\n\t\t * @protected\n\t\t * @member {Object} #_toolbarRect\n\t\t */\n\n\t\t/**\n\t\t * The DOM bounding client rect of the {@link #limiterElement}\n\t\t * of the toolbar.\n\t\t *\n\t\t * @protected\n\t\t * @member {Object} #_limiterRect\n\t\t */\n\n\t\tTemplate.extend( this.template, {\n\t\t\tattributes: {\n\t\t\t\tclass: [\n\t\t\t\t\t// Toggle class of the toolbar when \"sticky\" state changes in the view.\n\t\t\t\t\tbind.if( 'isSticky', 'ck-toolbar_sticky' ),\n\t\t\t\t\tbind.if( '_isStickyToTheLimiter', 'ck-toolbar_sticky_bottom-limit' ),\n\t\t\t\t],\n\t\t\t\tstyle: {\n\t\t\t\t\twidth: bind.to( 'isSticky', ( isSticky ) => {\n\t\t\t\t\t\treturn isSticky ? toPx( this._elementPlaceholder.getBoundingClientRect().width ) : null;\n\t\t\t\t\t} ),\n\n\t\t\t\t\tbottom: bind.to( '_isStickyToTheLimiter', ( _isStickyToTheLimiter ) => {\n\t\t\t\t\t\treturn _isStickyToTheLimiter ? toPx( this.limiterOffset ) : null;\n\t\t\t\t\t} ),\n\n\t\t\t\t\tmarginLeft: bind.to( '_marginLeft' )\n\t\t\t\t}\n\t\t\t}\n\t\t} );\n\n\t\t/**\n\t\t * A dummy element which visually fills the space as long as the\n\t\t * actual toolbar is sticky. It prevents flickering of the UI.\n\t\t *\n\t\t * @private\n\t\t * @property {HTMLElement}\n\t\t */\n\t\tthis._elementPlaceholder = new Template( {\n\t\t\ttag: 'div',\n\t\t\tattributes: {\n\t\t\t\tclass: [\n\t\t\t\t\t'ck-toolbar__placeholder'\n\t\t\t\t],\n\t\t\t\tstyle: {\n\t\t\t\t\tdisplay: bind.to( 'isSticky', isSticky => isSticky ? 'block' : 'none' ),\n\t\t\t\t\theight: bind.to( 'isSticky', ( isSticky ) => {\n\t\t\t\t\t\treturn isSticky ? toPx( this._toolbarRect.height ) : null;\n\t\t\t\t\t} )\n\t\t\t\t}\n\t\t\t}\n\t\t} ).render();\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tsuper.init();\n\n\t\tthis.element.parentNode.insertBefore( this._elementPlaceholder, this.element );\n\n\t\t// Update sticky state of the toolbar as the window is being scrolled.\n\t\tthis.listenTo( global.window, 'scroll', () => {\n\t\t\tthis._checkIfShouldBeSticky();\n\t\t} );\n\n\t\t// Synchronize with `model.isActive` because sticking an inactive toolbar is pointless.\n\t\tthis.listenTo( this, 'change:isActive', () => {\n\t\t\tthis._checkIfShouldBeSticky();\n\t\t} );\n\t}\n\n\t/**\n\t * Destroys the toolbar and removes the {@link #_elementPlaceholder}.\n\t */\n\tdestroy() {\n\t\treturn super.destroy().then( () => {\n\t\t\tthis._elementPlaceholder.remove();\n\t\t} );\n\t}\n\n\t/**\n\t * Analyzes the environment to decide whether the toolbar should\n\t * be sticky or not.\n\t *\n\t * @protected\n\t */\n\t_checkIfShouldBeSticky() {\n\t\tconst limiterRect = this._limiterRect = this.limiterElement.getBoundingClientRect();\n\t\tconst toolbarRect = this._toolbarRect = this.element.getBoundingClientRect();\n\n\t\t// The toolbar must be active to become sticky.\n\t\tthis.isSticky = this.isActive &&\n\t\t\t// The limiter's top edge must be beyond the upper edge of the visible viewport.\n\t\t\tlimiterRect.top < 0 &&\n\t\t\t// The model#limiterElement's height mustn't be smaller than the toolbar's height and model#limiterOffset.\n\t\t\t// There's no point in entering the sticky mode if the model#limiterElement is very, very small, because\n\t\t\t// it would immediately set model#_isStickyToTheLimiter true and, given model#limiterOffset, the toolbar\n\t\t\t// would be positioned before the model#limiterElement.\n\t\t\tthis._toolbarRect.height + this.limiterOffset < limiterRect.height;\n\n\t\t// Stick the toolbar to the top edge of the viewport simulating CSS position:sticky.\n\t\t// TODO: Possibly replaced by CSS in the future http://caniuse.com/#feat=css-sticky\n\t\tif ( this.isSticky ) {\n\t\t\tthis._isStickyToTheLimiter = limiterRect.bottom < toolbarRect.height + this.limiterOffset;\n\t\t\tthis._marginLeft = this._isStickyToTheLimiter ? null : toPx( -global.window.scrollX );\n\t\t}\n\t\t// Detach the toolbar from the top edge of the viewport.\n\t\telse {\n\t\t\tthis._isStickyToTheLimiter = false;\n\t\t\tthis._marginLeft = null;\n\t\t}\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-ui/src/toolbar/sticky/stickytoolbarview.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module ui/toolbar/toolbarseparatorview\n */\n\nimport View from '../view';\nimport Template from '../template';\n\n/**\n * The toolbar separator view class.\n *\n * @extends module:ui/view~View\n */\nexport default class ToolbarSeparatorView extends View {\n\t/**\n\t * @inheritDoc\n\t */\n\tconstructor( locale ) {\n\t\tsuper( locale );\n\n\t\tthis.template = new Template( {\n\t\t\ttag: 'span',\n\t\t\tattributes: {\n\t\t\t\tclass: [\n\t\t\t\t\t'ck-toolbar__separator'\n\t\t\t\t]\n\t\t\t}\n\t\t} );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-ui/src/toolbar/toolbarseparatorview.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module undo/redocommand\n */\n\nimport BaseCommand from './basecommand';\nimport { transformDeltaSets } from '@ckeditor/ckeditor5-engine/src/model/delta/transform';\n\n/**\n * The redo command stores {@link module:engine/model/batch~Batch batches} that were used to undo a batch by\n * {@link module:undo/undocommand~UndoCommand}. It is able to redo a previously undone batch by reversing the undoing\n * batches created by `UndoCommand`. The reversed batch is also transformed by batches from\n * {@link module:engine/model/document~Document#history history} that happened after it and are not other redo batches.\n *\n * The redo command also takes care of restoring the {@link module:engine/model/document~Document#selection document selection}\n * to the state before an undone batch was applied.\n *\n * @extends module:undo/basecommand~BaseCommand\n */\nexport default class RedoCommand extends BaseCommand {\n\t/**\n\t * Executes the command. This method reverts the last {@link module:engine/model/batch~Batch batch} added to\n\t * the command's stack, applies the reverted and transformed version on the\n\t * {@link module:engine/model/document~Document document} and removes the batch from the stack.\n\t * Then, it restores the {@link module:engine/model/document~Document#selection document selection}.\n\t *\n\t * @protected\n\t */\n\t_doExecute() {\n\t\tconst item = this._stack.pop();\n\n\t\t// All changes have to be done in one `enqueueChanges` callback so other listeners will not\n\t\t// step between consecutive deltas, or won't do changes to the document before selection is properly restored.\n\t\tthis.editor.document.enqueueChanges( () => {\n\t\t\tconst lastDelta = item.batch.deltas[ item.batch.deltas.length - 1 ];\n\t\t\tconst nextBaseVersion = lastDelta.baseVersion + lastDelta.operations.length;\n\n\t\t\t// Selection state is from the moment after undo happened. It needs to be transformed by all the deltas\n\t\t\t// that happened after the selection state got saved. Unfortunately it is tricky, because those deltas\n\t\t\t// are already compressed in the history (they are removed).\n\t\t\t// Because of that we will transform the selection only by non-redo deltas\n\t\t\tconst deltas = Array.from( this.editor.document.history.getDeltas( nextBaseVersion ) ).filter( ( delta ) => {\n\t\t\t\treturn !this._createdBatches.has( delta.batch );\n\t\t\t} );\n\n\t\t\tthis._restoreSelection( item.selection.ranges, item.selection.isBackward, deltas );\n\t\t\tthis._redo( item.batch );\n\t\t} );\n\n\t\tthis.refreshState();\n\t}\n\n\t/**\n\t * Redoes a batch by reversing the batch that has undone it, transforming that batch and applying it. This is\n\t * a helper method for {@link #_doExecute}.\n\t *\n\t * @private\n\t * @param {module:engine/model/batch~Batch} storedBatch The batch whose deltas will be reversed, transformed and applied.\n\t */\n\t_redo( storedBatch ) {\n\t\tconst document = this.editor.document;\n\n\t\t// All changes done by the command execution will be saved as one batch.\n\t\tconst redoingBatch = document.batch();\n\t\tthis._createdBatches.add( redoingBatch );\n\n\t\tconst deltasToRedo = storedBatch.deltas.slice();\n\t\tdeltasToRedo.reverse();\n\n\t\t// We will process each delta from `storedBatch`, in reverse order. If there was deltas A, B and C in stored batch,\n\t\t// we need to revert them in reverse order, so first reverse C, then B, then A.\n\t\tfor ( let deltaToRedo of deltasToRedo ) {\n\t\t\t// Keep in mind that all algorithms return arrays. That's because the transformation might result in multiple\n\t\t\t// deltas, so we need arrays to handle them anyway. To simplify algorithms, it is better to always have arrays\n\t\t\t// in mind. For simplicity reasons, we will use singular form in descriptions and names.\n\n\t\t\tconst nextBaseVersion = deltaToRedo.baseVersion + deltaToRedo.operations.length;\n\n\t\t\t// As stated above, convert delta to array of deltas.\n\t\t\tlet reversedDelta = [ deltaToRedo.getReversed() ];\n\n\t\t\t// 1. Transform that delta by deltas from history that happened after it.\n\t\t\t// Omit deltas from \"redo\" batches, because reversed delta already bases on them. Transforming by them\n\t\t\t// again will result in incorrect deltas.\n\t\t\tfor ( let historyDelta of document.history.getDeltas( nextBaseVersion ) ) {\n\t\t\t\tif ( !this._createdBatches.has( historyDelta.batch ) ) {\n\t\t\t\t\treversedDelta = transformDeltaSets( reversedDelta, [ historyDelta ], true ).deltasA;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// 2. After reversed delta has been transformed by all history deltas, apply it.\n\t\t\tfor ( let delta of reversedDelta ) {\n\t\t\t\t// Fix base version.\n\t\t\t\tdelta.baseVersion = document.version;\n\n\t\t\t\t// Before applying, add the delta to the `redoingBatch`.\n\t\t\t\tredoingBatch.addDelta( delta );\n\n\t\t\t\t// Now, apply all operations of the delta.\n\t\t\t\tfor ( let operation of delta.operations ) {\n\t\t\t\t\tdocument.applyOperation( operation );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-undo/src/redocommand.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module undo/undo\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport UndoEngine from './undoengine';\nimport ButtonView from '@ckeditor/ckeditor5-ui/src/button/buttonview';\n\nimport undoIcon from '../theme/icons/undo.svg';\nimport redoIcon from '../theme/icons/redo.svg';\n\n/**\n * The undo feature. It introduces the Undo and Redo buttons to the editor.\n *\n * Below is the explanation of the undo mechanism working together with {@link module:engine/model/history~History History}:\n *\n * Whenever a {@link module:engine/model/delta/delta~Delta delta} is applied to the\n * {@link module:engine/model/document~Document document}, it is saved to `History` as is.\n * The {@link module:engine/model/batch~Batch batch} that owns that delta is also saved, in\n * {@link module:undo/undocommand~UndoCommand}, together with the selection that was present in the document before the\n * delta was applied. A batch is saved instead of the delta because changes are undone batch-by-batch, not delta-by-delta\n * and a batch is seen as one undo step.\n *\n * After some changes happen to the document, the `History` and `UndoCommand` stack can be represented as follows:\n *\n *\t\t  History                           Undo stack\n *\t\t===========             ==================================\n *\t\t[delta A1]              [batch A with selection before A1]\n *\t\t[delta B1]              [batch B with selection before B1]\n *\t\t[delta B2]              [batch C with selection before C1]\n *\t\t[delta C1]\n *\t\t[delta C2]\n *\t\t[delta B3]\n *\t\t[delta C3]\n *\n * Where deltas starting with the same letter are from same batch.\n *\n * Undoing a batch means that a set of deltas which will reverse the effects of that batch needs to be generated. For example, if a batch\n * added several letters, undoing the batch should remove them. It is important to apply undoing deltas in the reversed order,\n * so if a batch has delta `X`, `Y`, `Z`, reversed deltas `Zr`, `Yr` and `Xr` need to be applied. Otherwise reversed delta\n * `Xr` would operate on a wrong document state, because delta `X` does not know that deltas `Y` and `Z` happened.\n *\n * After deltas from an undone batch got {@link module:engine/model/delta/delta~Delta#getReversed reversed},\n * one needs to make sure if they are ready to be applied. In the scenario above, delta `C3` is the last delta and `C3r`\n * bases on up-to-date document state, so it can be applied to the document.\n *\n *\t\t  History                           Undo stack\n *\t\t===========             ==================================\n *\t\t[delta A1 ]             [batch A with selection before A1]\n *\t\t[delta B1 ]             [batch B with selection before B1]\n *\t\t[delta B2 ]             [   processing undoing batch C   ]\n *\t\t[delta C1 ]\n *\t\t[delta C2 ]\n *\t\t[delta B3 ]\n *\t\t[delta C3 ]\n *\t\t[delta C3r]\n *\n * Next is delta `C2`, reversed to `C2r`. `C2r` bases on `C2`, so it bases on the wrong document state. It needs to be\n * transformed by deltas from history that happened after it, so it \"knows\" about them. Let us assume that `C2' = C2r * B3 * C3 * C3r`,\n * where `*` means \"transformed by\". As can be seen, `C2r` is transformed by a delta which is undone afterwards anyway.\n * This brings two problems: lower effectiveness (obvious) and incorrect results. Bad results come from the fact that\n * operational transformation algorithms assume there is no connection between two transformed operations when resolving\n * conflicts, which is true for example for collaborative editing, but is not true for the undo algorithm.\n *\n * To prevent both problems, `History` introduces an API to {@link module:engine/model/history~History#removeDelta remove}\n * deltas from history. It is used to remove undone and undoing deltas after they are applied. It feels right &mdash; since when a\n * delta is undone or reversed, it is \"removed\" and there should be no sign of it in the history (fig. 1).\n *\n * Notes:\n *\n * * `---` symbolizes a removed delta.\n * * `'` symbolizes a reversed delta that was later transformed.\n *\n *\t\tHistory (fig. 1)            History (fig. 2)            History (fig. 3)\n *\t\t================            ================            ================\n *\t\t   [delta A1]                  [delta A1]                  [delta A1]\n *\t\t   [delta B1]                  [delta B1]                  [delta B1]\n *\t\t   [delta B2]                  [delta B2]                  [delta B2]\n *\t\t   [delta C1]                  [delta C1]                  [---C1---]\n *\t\t   [delta C2]                  [---C2---]                  [---C2---]\n *\t\t   [delta B3]                  [delta B3]                  [delta B3]\n *\t\t   [---C3---]                  [---C3---]                  [---C3---]\n *\t\t   [---C3r--]                  [---C3r--]                  [---C3r--]\n *\t\t                               [---C2'--]                  [---C2'--]\n *\t\t                                                           [---C1'--]\n *\n * `C2r` can now be transformed only by `B3` and both `C2'` and `C2` can be removed (fig. 2). Same with `C1` (fig. 3).\n *\n * But what about that selection? For batch `C`, undo feature remembers the selection just before `C1` was applied. It can be\n * visualized between delta `B2` and `B3` (see fig. 3). As can be seen, some operations were applied to the document since the selection\n * state was remembered. Setting the document selection as it was remembered would be incorrect. It feels natural that\n * the selection state should also be transformed by deltas from history. The same pattern applies as with transforming deltas &mdash;\n * ranges should not be transformed by undone and undoing deltas. Thankfully, those deltas are already removed from history.\n *\n * Unfortunately, a problem appears with delta `B3`. It still remembers the context of deltas `C2` and `C1` on which it bases.\n * It is an obvious error &mdash; transforming by that delta would lead to incorrect results or \"repeating\" history would\n * produce a different document than the actual one.\n *\n * To prevent this situation, `B3` needs to also be {@link module:engine/model/history~History#updateDelta updated} in history.\n * It should be kept in a state that \"does not remember\" deltas that were removed from history. It is easily\n * achieved while transforming the reversed delta. For example, when `C2r` is transformed by `B3`, at the same time `B3` is\n * transformed by `C2r`. Transforming `B3` that remembers `C2` by a delta reversing `C2` effectively makes `B3` \"forget\" about `C2`.\n * By doing these transformations you effectively make `B3` base on `B2` which is the correct state of history (fig. 4).\n *\n *\t\t     History (fig. 4)                         History (fig. 5)\n *\t\t===========================            ===============================\n *\t\t        [delta A1]                               [---A1---]\n *\t\t        [delta B1]                         [delta B1 \"without A1\"]\n *\t\t        [delta B2]                         [delta B2 \"without A1\"]\n *\t\t        [---C1---]                               [---C1---]\n *\t\t        [---C2---]                               [---C2---]\n *\t\t[delta B3 \"without C2, C1\"]            [delta B3 \"without C2, C1, A1\"]\n *\t\t        [---C3---]                               [---C3---]\n *\t\t        [---C3r--]                               [---C3r--]\n *\t\t        [---C2'--]                               [---C2'--]\n *\t\t        [---C1'--]                               [---C1'--]\n *\t\t                                                 [---A1'--]\n *\n * Selective undo works on the same basis, however, instead of undoing the last batch in the undo stack, any batch can be undone.\n * The same algorithm applies: deltas from a batch (i.e. `A1`) are reversed and then transformed by deltas stored in history,\n * simultaneously updating them. Then deltas are applied to the document and removed from history (fig. 5).\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class Undo extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get requires() {\n\t\treturn [ UndoEngine ];\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tconst editor = this.editor;\n\t\tconst t = editor.t;\n\n\t\tthis._addButton( 'undo', t( 'Undo' ), 'CTRL+Z', undoIcon );\n\t\tthis._addButton( 'redo', t( 'Redo' ), 'CTRL+Y', redoIcon );\n\n\t\teditor.keystrokes.set( 'CTRL+Z', 'undo' );\n\t\teditor.keystrokes.set( 'CTRL+Y', 'redo' );\n\t\teditor.keystrokes.set( 'CTRL+SHIFT+Z', 'redo' );\n\t}\n\n\t/**\n\t * Creates a button for the specified command.\n\t *\n\t * @private\n\t * @param {String} name Command name.\n\t * @param {String} label Button label.\n\t * @param {String} keystroke Command keystroke.\n\t * @param {String} Icon Source of the icon.\n\t */\n\t_addButton( name, label, keystroke, Icon ) {\n\t\tconst editor = this.editor;\n\t\tconst command = editor.commands.get( name );\n\n\t\teditor.ui.componentFactory.add( name, ( locale ) => {\n\t\t\tconst view = new ButtonView( locale );\n\n\t\t\tview.set( {\n\t\t\t\tlabel: label,\n\t\t\t\ticon: Icon,\n\t\t\t\tkeystroke,\n\t\t\t\ttooltip: true\n\t\t\t} );\n\n\t\t\tview.bind( 'isEnabled' ).to( command, 'isEnabled' );\n\n\t\t\tthis.listenTo( view, 'execute', () => editor.execute( name ) );\n\n\t\t\treturn view;\n\t\t} );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-undo/src/undo.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module undo/undocommand\n */\n\nimport BaseCommand from './basecommand';\nimport { transformRangesByDeltas } from './basecommand';\nimport { transformDeltaSets } from '@ckeditor/ckeditor5-engine/src/model/delta/transform';\n\n/**\n * The undo command stores {@link module:engine/model/batch~Batch batches} applied to the\n * {@link module:engine/model/document~Document document} and is able to undo a batch by reversing it and transforming by\n * other batches from {@link module:engine/model/document~Document#history history} that happened after the reversed batch.\n *\n * The undo command also takes care of restoring the {@link module:engine/model/document~Document#selection document selection}\n * to the state before the undone batch was applied.\n *\n * @extends module:undo/basecommand~BaseCommand\n */\nexport default class UndoCommand extends BaseCommand {\n\t/**\n\t * Executes the command. This method reverts a {@link module:engine/model/batch~Batch batch} added to the command's stack, transforms\n\t * and applies the reverted version on the {@link module:engine/model/document~Document document} and removes the batch from the stack.\n\t * Then, it restores the {@link module:engine/model/document~Document#selection document selection}.\n\t *\n\t * @protected\n\t * @fires revert\n\t * @param {module:engine/model/batch~Batch} [batch] A batch that should be undone. If not set, the last added batch will be undone.\n\t */\n\t_doExecute( batch = null ) {\n\t\t// If batch is not given, set `batchIndex` to the last index in command stack.\n\t\tlet batchIndex = batch ? this._stack.findIndex( ( a ) => a.batch == batch ) : this._stack.length - 1;\n\n\t\tconst item = this._stack.splice( batchIndex, 1 )[ 0 ];\n\n\t\t// All changes has to be done in one `enqueueChanges` callback so other listeners will not\n\t\t// step between consecutive deltas, or won't do changes to the document before selection is properly restored.\n\t\tthis.editor.document.enqueueChanges( () => {\n\t\t\tconst undoingBatch = this._undo( item.batch );\n\n\t\t\tconst deltas = this.editor.document.history.getDeltas( item.batch.baseVersion );\n\t\t\tthis._restoreSelection( item.selection.ranges, item.selection.isBackward, deltas );\n\n\t\t\tthis.fire( 'revert', item.batch, undoingBatch );\n\t\t} );\n\n\t\tthis.refreshState();\n\t}\n\n\t/**\n\t * Returns an index in {@link module:undo/basecommand~BaseCommand#_stack} pointing to the item that is storing a\n\t * batch that has a given {@link module:engine/model/batch~Batch#baseVersion}.\n\t *\n\t * @private\n\t * @param {Number} baseVersion The base version of the batch to find.\n\t * @returns {Number|null}\n\t */\n\t_getItemIndexFromBaseVersion( baseVersion ) {\n\t\tfor ( let i = 0; i < this._stack.length; i++ ) {\n\t\t\tif ( this._stack[ i ].batch.baseVersion == baseVersion ) {\n\t\t\t\treturn i;\n\t\t\t}\n\t\t}\n\n\t\treturn null;\n\t}\n\n\t/**\n\t * Undoes a batch by reversing a batch from history, transforming that reversed batch and applying it. This is\n\t * a helper method for {@link #_doExecute}.\n\t *\n\t * @private\n\t * @param {module:engine/model/batch~Batch} batchToUndo A batch whose deltas will be reversed, transformed and applied.\n\t */\n\t_undo( batchToUndo ) {\n\t\tconst document = this.editor.document;\n\n\t\t// All changes done by the command execution will be saved as one batch.\n\t\tconst undoingBatch = document.batch();\n\t\tthis._createdBatches.add( undoingBatch );\n\n\t\tconst history = document.history;\n\t\tconst deltasToUndo = batchToUndo.deltas.slice();\n\t\tdeltasToUndo.reverse();\n\n\t\t// We will process each delta from `batchToUndo`, in reverse order. If there was deltas A, B and C in undone batch,\n\t\t// we need to revert them in reverse order, so first reverse C, then B, then A.\n\t\tfor ( let deltaToUndo of deltasToUndo ) {\n\t\t\t// Keep in mind that all algorithms return arrays. That's because the transformation might result in multiple\n\t\t\t// deltas, so we need arrays to handle them anyway. To simplify algorithms, it is better to always have arrays\n\t\t\t// in mind. For simplicity reasons, we will use singular form in descriptions and names.\n\t\t\tconst baseVersion = deltaToUndo.baseVersion;\n\t\t\tconst nextBaseVersion = baseVersion + deltaToUndo.operations.length;\n\n\t\t\t// 1. Get updated version of the delta from the history.\n\t\t\t// Batch stored in the undo command might have an outdated version of the delta that should be undone.\n\t\t\t// To prevent errors, we will take an updated version of it from the history, basing on delta's `baseVersion`.\n\t\t\tconst updatedDeltaToUndo = history.getDelta( baseVersion );\n\n\t\t\t// This is a safe valve in case of not finding delta to undo in history. This may come up if that delta\n\t\t\t// got updated into no deltas, or removed from history.\n\t\t\tif ( updatedDeltaToUndo === null ) {\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\t// 2. Reverse delta from the history.\n\t\t\tupdatedDeltaToUndo.reverse();\n\t\t\tlet reversedDelta = [];\n\n\t\t\tfor ( let delta of updatedDeltaToUndo ) {\n\t\t\t\treversedDelta.push( delta.getReversed() );\n\t\t\t}\n\n\t\t\t// Stores history deltas transformed by `deltaToUndo`. Will be used later for updating document history.\n\t\t\tconst updatedHistoryDeltas = {};\n\n\t\t\t// 3. Transform reversed delta by history deltas that happened after delta to undo. We have to bring\n\t\t\t// reversed delta to the current state of document. While doing this, we will also update history deltas\n\t\t\t// to the state which \"does not remember\" delta that we undo.\n\t\t\tfor ( let historyDelta of history.getDeltas( nextBaseVersion ) ) {\n\t\t\t\t// 3.1. Transform selection range stored with history batch by reversed delta.\n\t\t\t\t// It is important to keep stored selection ranges updated. As we are removing and updating deltas in the history,\n\t\t\t\t// selection ranges would base on outdated history state.\n\t\t\t\tconst itemIndex = this._getItemIndexFromBaseVersion( historyDelta.baseVersion );\n\n\t\t\t\t// `itemIndex` will be `null` for `historyDelta` if it is not the first delta in it's batch.\n\t\t\t\t// This is fine, because we want to transform each selection only once, before transforming reversed delta\n\t\t\t\t// by the first delta of the batch connected with the ranges.\n\t\t\t\tif ( itemIndex !== null ) {\n\t\t\t\t\tthis._stack[ itemIndex ].selection.ranges = transformRangesByDeltas( this._stack[ itemIndex ].selection.ranges, reversedDelta );\n\t\t\t\t}\n\n\t\t\t\t// 3.2. Transform reversed delta by history delta and vice-versa.\n\t\t\t\tconst results = transformDeltaSets( reversedDelta, [ historyDelta ], true );\n\n\t\t\t\treversedDelta = results.deltasA;\n\t\t\t\tconst updatedHistoryDelta = results.deltasB;\n\n\t\t\t\t// 3.3. Store updated history delta. Later, it will be updated in `history`.\n\t\t\t\tif ( !updatedHistoryDeltas[ historyDelta.baseVersion ] ) {\n\t\t\t\t\tupdatedHistoryDeltas[ historyDelta.baseVersion ] = [];\n\t\t\t\t}\n\n\t\t\t\tupdatedHistoryDeltas[ historyDelta.baseVersion ] = updatedHistoryDeltas[ historyDelta.baseVersion ].concat( updatedHistoryDelta );\n\t\t\t}\n\n\t\t\t// 4. After reversed delta has been transformed by all history deltas, apply it.\n\t\t\tfor ( let delta of reversedDelta ) {\n\t\t\t\t// Fix base version.\n\t\t\t\tdelta.baseVersion = document.version;\n\n\t\t\t\t// Before applying, add the delta to the `undoingBatch`.\n\t\t\t\tundoingBatch.addDelta( delta );\n\n\t\t\t\t// Now, apply all operations of the delta.\n\t\t\t\tfor ( let operation of delta.operations ) {\n\t\t\t\t\tdocument.applyOperation( operation );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// 5. Remove reversed delta from the history.\n\t\t\thistory.removeDelta( baseVersion );\n\n\t\t\t// And all deltas that are reversing it.\n\t\t\t// So the history looks like both original and reversing deltas never happened.\n\t\t\t// That's why we have to update history deltas - some of them might have been basing on deltas that we are now removing.\n\t\t\tfor ( let delta of reversedDelta ) {\n\t\t\t\thistory.removeDelta( delta.baseVersion );\n\t\t\t}\n\n\t\t\t// 6. Update history deltas in history.\n\t\t\tfor ( let historyBaseVersion in updatedHistoryDeltas ) {\n\t\t\t\thistory.updateDelta( Number( historyBaseVersion ), updatedHistoryDeltas[ historyBaseVersion ] );\n\t\t\t}\n\t\t}\n\n\t\treturn undoingBatch;\n\t}\n}\n\n/**\n * Fired when execution of the command reverts some batch.\n *\n * @event revert\n */\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-undo/src/undocommand.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module undo/undoengine\n */\n\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport UndoCommand from './undocommand';\nimport RedoCommand from './redocommand';\n\n/**\n * The undo engine feature.\n *\n * Undo brings in possibility to undo and redo changes done in the model by deltas through\n * the {@link module:engine/model/document~Document#batch Batch API}.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class UndoEngine extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tconstructor( editor ) {\n\t\tsuper( editor );\n\n\t\t/**\n\t\t * The command that manages undo {@link module:engine/model/batch~Batch batches} stack (history).\n\t\t * Created and registered during the {@link #init feature initialization}.\n\t\t *\n\t\t * @private\n\t\t * @member {undo.UndoEngineCommand} #_undoCommand\n\t\t */\n\n\t\t/**\n\t\t * The command that manages redo {@link module:engine/model/batch~Batch batches} stack (history).\n\t\t * Created and registered during the {@link #init feature initialization}.\n\t\t *\n\t\t * @private\n\t\t * @member {undo.UndoEngineCommand} #_redoCommand\n\t\t */\n\n\t\t/**\n\t\t * Keeps track of which batches were registered in undo.\n\t\t *\n\t\t * @private\n\t\t * @member {WeakSet.<module:engine/model/batch~Batch>}\n\t\t */\n\t\tthis._batchRegistry = new WeakSet();\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\t// Create commands.\n\t\tthis._undoCommand = new UndoCommand( this.editor );\n\t\tthis._redoCommand = new RedoCommand( this.editor );\n\n\t\t// Register command to the editor.\n\t\tthis.editor.commands.set( 'undo', this._undoCommand );\n\t\tthis.editor.commands.set( 'redo', this._redoCommand );\n\n\t\tthis.listenTo( this.editor.document, 'change', ( evt, type, changes, batch ) => {\n\t\t\t// If changes are not a part of a batch or this is not a new batch, omit those changes.\n\t\t\tif ( this._batchRegistry.has( batch ) || batch.type == 'transparent' ) {\n\t\t\t\treturn;\n\t\t\t} else {\n\t\t\t\tif ( this._redoCommand._createdBatches.has( batch ) ) {\n\t\t\t\t\t// If this batch comes from `redoCommand`, add it to `undoCommand` stack.\n\t\t\t\t\tthis._undoCommand.addBatch( batch );\n\t\t\t\t} else if ( !this._undoCommand._createdBatches.has( batch ) ) {\n\t\t\t\t\t// A default batch - these are new changes in the document, not introduced by undo feature.\n\t\t\t\t\t// Add them to `undoCommand` stack and clear `redoCommand` stack.\n\t\t\t\t\tthis._undoCommand.addBatch( batch );\n\t\t\t\t\tthis._redoCommand.clearStack();\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Add the batch to the registry so it will not be processed again.\n\t\t\tthis._batchRegistry.add( batch );\n\t\t}, { priority: 'highest' } );\n\n\t\tthis.listenTo( this._undoCommand, 'revert', ( evt, undoneBatch, undoingBatch ) => {\n\t\t\tthis._redoCommand.addBatch( undoingBatch );\n\t\t} );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-undo/src/undoengine.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/config\n */\n\nimport isPlainObject from './lib/lodash/isPlainObject';\n\n/**\n * Handles a configuration dictionary.\n */\nexport default class Config {\n\t/**\n\t * Creates an instance of the {@link ~Config} class.\n\t *\n\t * @param {Object} [configurations] The initial configurations to be set. Usually, provided by the user.\n\t * @param {Object} [defaultConfigurations] The default configurations. Usually, provided by the system.\n\t */\n\tconstructor( configurations, defaultConfigurations ) {\n\t\t/**\n\t\t * Store for the whole configuration.\n\t\t *\n\t\t * @private\n\t\t * @member {Object}\n\t\t */\n\t\tthis._config = {};\n\n\t\t// Set default configuration.\n\t\tif ( defaultConfigurations ) {\n\t\t\tthis.define( defaultConfigurations );\n\t\t}\n\n\t\t// Set initial configuration.\n\t\tif ( configurations ) {\n\t\t\tthis._setObjectToTarget( this._config, configurations );\n\t\t}\n\t}\n\n\t/**\n\t * Set configuration values.\n\t *\n\t * It accepts both a name/value pair or an object, which properties and values will be used to set\n\t * configurations.\n\t *\n\t * It also accepts setting a \"deep configuration\" by using dots in the name. For example, `'resize.width'` sets\n\t * the value for the `width` configuration in the `resize` subset.\n\t *\n\t *\t\tconfig.set( 'width', 500 );\n\t *\t\tconfig.set( 'toolbar.collapsed', true );\n\t *\n\t *\t\t// Equivalent to:\n\t *\t\tconfig.set( {\n\t *\t\t\twidth: 500\n\t *\t\t\ttoolbar: {\n\t *\t\t\t\tcollapsed: true\n\t *\t\t\t}\n\t *\t\t} );\n\t *\n\t * Passing an object as the value will amend the configuration, not replace it.\n\t *\n\t *\t\tconfig.set( 'toolbar', {\n\t *\t\t\tcollapsed: true,\n\t *\t\t} );\n\t *\n\t *\t\tconfig.set( 'toolbar', {\n\t *\t\t\tcolor: 'red',\n\t *\t\t} );\n\t *\n\t *\t\tconfig.get( 'toolbar.collapsed' ); // true\n\t *\t\tconfig.get( 'toolbar.color' ); // 'red'\n\t *\n\t * @param {String|Object} name The configuration name or an object from which take properties as\n\t * configuration entries. Configuration names are case-sensitive.\n\t * @param {*} value The configuration value. Used if a name is passed.\n\t */\n\tset( name, value ) {\n\t\tthis._setToTarget( this._config, name, value );\n\t}\n\n\t/**\n\t * Does exactly the same as {@link #set} with one exception – passed configuration extends\n\t * existing one, but does not overwrite already defined values.\n\t *\n\t * This method is supposed to be called by plugin developers to setup plugin's configurations. It would be\n\t * rarely used for other needs.\n\t *\n\t * @param {String|Object} name The configuration name or an object from which take properties as\n\t * configuration entries. Configuration names are case-sensitive.\n\t * @param {*} value The configuration value. Used if a name is passed.\n\t */\n\tdefine( name, value ) {\n\t\tconst isDefine = true;\n\n\t\tthis._setToTarget( this._config, name, value, isDefine );\n\t}\n\n\t/**\n\t * Gets the value for a configuration entry.\n\t *\n\t *\t\tconfig.get( 'name' );\n\t *\n\t * Deep configurations can be retrieved by separating each part with a dot.\n\t *\n\t *\t\tconfig.get( 'toolbar.collapsed' );\n\t *\n\t * @param {String} name The configuration name. Configuration names are case-sensitive.\n\t * @returns {*} The configuration value or `undefined` if the configuration entry was not found.\n\t */\n\tget( name ) {\n\t\treturn this._getFromSource( this._config, name );\n\t}\n\n\t/**\n\t * Saves passed configuration to the specified target (nested object).\n\t *\n\t * @private\n\t * @param {Object} target Nested config object.\n\t * @param {String|Object} name The configuration name or an object from which take properties as\n\t * configuration entries. Configuration names are case-sensitive.\n\t * @param {*} value The configuration value. Used if a name is passed.\n\t * @param {Boolean} [isDefine=false] Define if passed configuration should overwrite existing one.\n\t */\n\t_setToTarget( target, name, value, isDefine = false ) {\n\t\t// In case of an object, iterate through it and call `_setToTarget` again for each property.\n\t\tif ( isPlainObject( name ) ) {\n\t\t\tthis._setObjectToTarget( target, name, isDefine );\n\n\t\t\treturn;\n\t\t}\n\n\t\t// The configuration name should be split into parts if it has dots. E.g. `resize.width` -> [`resize`, `width`].\n\t\tconst parts = name.split( '.' );\n\n\t\t// Take the name of the configuration out of the parts. E.g. `resize.width` -> `width`.\n\t\tname = parts.pop();\n\n\t\t// Iterate over parts to check if currently stored configuration has proper structure.\n\t\tfor ( let part of parts ) {\n\t\t\t// If there is no object for specified part then create one.\n\t\t\tif ( !isPlainObject( target[ part ] ) ) {\n\t\t\t\ttarget[ part ] = {};\n\t\t\t}\n\n\t\t\t// Nested object becomes a target.\n\t\t\ttarget = target[ part ];\n\t\t}\n\n\t\t// In case of value is an object.\n\t\tif ( isPlainObject( value ) ) {\n\t\t\t// We take care of proper config structure.\n\t\t\tif ( !isPlainObject( target[ name ] ) ) {\n\t\t\t\ttarget[ name ] = {};\n\t\t\t}\n\n\t\t\ttarget = target[ name ];\n\n\t\t\t// And iterate through this object calling `_setToTarget` again for each property.\n\t\t\tthis._setObjectToTarget( target, value, isDefine );\n\n\t\t\treturn;\n\t\t}\n\n\t\t// Do nothing if we are defining configuration for non empty name.\n\t\tif ( isDefine && typeof target[ name ] != 'undefined' ) {\n\t\t\treturn;\n\t\t}\n\n\t\ttarget[ name ] = value;\n\t}\n\n\t/**\n\t * Get specified configuration from specified source (nested object).\n\t *\n\t * @private\n\t * @param {Object} source level of nested object.\n\t * @param {String} name The configuration name. Configuration names are case-sensitive.\n\t * @returns {*} The configuration value or `undefined` if the configuration entry was not found.\n\t */\n\t_getFromSource( source, name ) {\n\t\t// The configuration name should be split into parts if it has dots. E.g. `resize.width` -> [`resize`, `width`].\n\t\tconst parts = name.split( '.' );\n\n\t\t// Take the name of the configuration out of the parts. E.g. `resize.width` -> `width`.\n\t\tname = parts.pop();\n\n\t\t// Iterate over parts to check if currently stored configuration has proper structure.\n\t\tfor ( let part of parts ) {\n\t\t\tif ( !isPlainObject( source[ part ] ) ) {\n\t\t\t\tsource = null;\n\t\t\t\tbreak;\n\t\t\t}\n\n\t\t\t// Nested object becomes a source.\n\t\t\tsource = source[ part ];\n\t\t}\n\n\t\t// Always returns undefined for non existing configuration\n\t\treturn source ? source[ name ] : undefined;\n\t}\n\n\t/**\n\t * Iterates through passed object and calls {@link #_setToTarget} method with object key and value for each property.\n\t *\n\t * @private\n\t * @param {Object} target Nested config object.\n\t * @param {Object} configuration Configuration data set\n\t * @param {Boolean} [isDefine] Defines if passed configuration is default configuration or not.\n\t */\n\t_setObjectToTarget( target, configuration, isDefine ) {\n\t\tObject.keys( configuration ).forEach( key => {\n\t\t\tthis._setToTarget( target, key, configuration[ key ], isDefine );\n\t\t} );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/config.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/difftochanges\n */\n\n/**\n * Creates a set of changes which need to be applied to the input in order to transform\n * it into the output. This function can be used with strings or arrays.\n *\n *\t\tconst input = Array.from( 'abc' );\n *\t\tconst output = Array.from( 'xaby' );\n *\t\tconst changes = diffToChanges( diff( input, output ), output );\n *\n *\t\tchanges.forEach( change => {\n *\t\t\tif ( change.type == 'insert' ) {\n *\t\t\t\tinput.splice( change.index, 0, ...change.values );\n *\t\t\t} else if ( change.type == 'delete' ) {\n *\t\t\t\tinput.splice( change.index, change.howMany );\n *\t\t\t}\n *\t\t} );\n *\n *\t\tinput.join( '' ) == output.join( '' ); // -> true\n *\n * @param {Array.<'equal'|'insert'|'delete'>} diff Result of {@link module:utils/diff~diff}.\n * @param {String|Array} output The string or array which was passed as diff's output.\n * @returns {Array.<Object>} Set of changes (insert or delete) which need to be applied to the input\n * in order to transform it into the output.\n */\nexport default function diffToChanges( diff, output ) {\n\tconst changes = [];\n\tlet index = 0;\n\tlet lastOperation;\n\n\tdiff.forEach( change => {\n\t\tif ( change == 'equal' ) {\n\t\t\tpushLast();\n\n\t\t\tindex++;\n\t\t} else if ( change == 'insert' ) {\n\t\t\tif ( isContinuationOf( 'insert' ) ) {\n\t\t\t\tlastOperation.values.push( output[ index ] );\n\t\t\t} else {\n\t\t\t\tpushLast();\n\n\t\t\t\tlastOperation = {\n\t\t\t\t\ttype: 'insert',\n\t\t\t\t\tindex: index,\n\t\t\t\t\tvalues: [ output[ index ] ]\n\t\t\t\t};\n\t\t\t}\n\n\t\t\tindex++;\n\t\t} else /* if ( change == 'delete' ) */ {\n\t\t\tif ( isContinuationOf( 'delete' ) ) {\n\t\t\t\tlastOperation.howMany++;\n\t\t\t} else {\n\t\t\t\tpushLast();\n\n\t\t\t\tlastOperation = {\n\t\t\t\t\ttype: 'delete',\n\t\t\t\t\tindex: index,\n\t\t\t\t\thowMany: 1\n\t\t\t\t};\n\t\t\t}\n\t\t}\n\t} );\n\n\tpushLast();\n\n\treturn changes;\n\n\tfunction pushLast() {\n\t\tif ( lastOperation ) {\n\t\t\tchanges.push( lastOperation );\n\t\t\tlastOperation = null;\n\t\t}\n\t}\n\n\tfunction isContinuationOf( expected ) {\n\t\treturn lastOperation && lastOperation.type == expected;\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/difftochanges.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/dom/getcommonancestor\n */\n\nimport getAncestors from './getancestors';\n\n/**\n * Searches and returns the lowest common ancestor of two given nodes.\n *\n * @param {Node} nodeA First node.\n * @param {Node} nodeB Second node.\n * @returns {Node|DocumentFragment|Document|null} Lowest common ancestor of both nodes or `null` if nodes do not have a common ancestor.\n */\nexport default function getCommonAncestor( nodeA, nodeB ) {\n\tconst ancestorsA = getAncestors( nodeA );\n\tconst ancestorsB = getAncestors( nodeB );\n\n\tlet i = 0;\n\n\t// It does not matter which array is shorter.\n\twhile ( ancestorsA[ i ] == ancestorsB[ i ] && ancestorsA[ i ] ) {\n\t\ti++;\n\t}\n\n\treturn i === 0 ? null : ancestorsA[ i - 1 ];\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/dom/getcommonancestor.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/* globals HTMLTextAreaElement */\n\n/**\n * @module utils/dom/getdatafromelement\n */\n\n/**\n * Gets data from a given source element.\n *\n * @param {HTMLElement} el The element from which the data will be retrieved.\n * @returns {String} The data string.\n */\nexport default function getDataFromElement( el ) {\n\tif ( el instanceof HTMLTextAreaElement ) {\n\t\treturn el.value;\n\t}\n\n\treturn el.innerHTML;\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/dom/getdatafromelement.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/dom/getpositionedancestor\n */\n\nimport global from './global';\n\n/**\n * For a given element, returns the nearest ancestor element which CSS position is not \"static\".\n *\n * @param {HTMLElement} element Native DOM element to be checked.\n * @returns {HTMLElement|null}\n */\nexport default function getPositionedAncestor( element ) {\n\twhile ( element && element.tagName.toLowerCase() != 'html' ) {\n\t\tif ( global.window.getComputedStyle( element ).position != 'static' ) {\n\t\t\treturn element;\n\t\t}\n\n\t\telement = element.parentElement;\n\t}\n\n\treturn null;\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/dom/getpositionedancestor.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/dom/indexof\n */\n\n/**\n * Returns index of the node in the parent element.\n *\n * @param {Node} node Node which index is tested.\n * @returns {Number} Index of the node in the parent element. Returns 0 if node has no parent.\n */\nexport default function indexOf( node ) {\n\tlet index = 0;\n\n\twhile ( node.previousSibling ) {\n\t\tnode = node.previousSibling;\n\t\tindex++;\n\t}\n\n\treturn index;\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/dom/indexof.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/dom/insertat\n */\n\n/**\n * Inserts node to the parent at given index.\n *\n * @param {Element} parentElement Parent element.\n * @param {Number} index Insertions index.\n * @param {Node} nodeToInsert Node to insert.\n */\nexport default function insertAt( parentElement, index, nodeToInsert ) {\n\tparentElement.insertBefore( nodeToInsert, parentElement.childNodes[ index ] || null );\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/dom/insertat.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/dom/isrange\n */\n\n/**\n * Checks if the object is a native DOM Range.\n *\n * @param {*} obj\n * @returns {Boolean}\n */\nexport default function isRange( obj ) {\n\treturn Object.prototype.toString.apply( obj ) == '[object Range]';\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/dom/isrange.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/dom/position\n */\n\nimport global from './global';\nimport Rect from './rect';\nimport getPositionedAncestor from './getpositionedancestor';\n\n/**\n * Calculates the `position: absolute` coordinates of a given element so it can be positioned with respect to the\n * target in the visually most efficient way, taking various restrictions like viewport or limiter geometry\n * into consideration.\n *\n *\t\t// The element which is to be positioned.\n *\t\tconst element = document.body.querySelector( '#toolbar' );\n *\n *\t\t// A target to which the element is positioned relatively.\n *\t\tconst target = document.body.querySelector( '#container' );\n *\n *\t\t// Finding the optimal coordinates for the positioning.\n *\t\tconst { left, top, name } = getOptimalPosition( {\n *\t\t\telement: element,\n *\t\t\ttarget: target,\n *\n * \t\t\t// The algorithm will chose among these positions to meet the requirements such\n * \t\t\t// as \"limiter\" element or \"fitInViewport\", set below. The positions are considered\n * \t\t\t// in the order of the array.\n *\t\t\tpositions: [\n *\t\t\t\t//\n *\t\t\t \t//\t[ Target ]\n *\t\t\t\t//\t+-----------------+\n *\t\t\t\t//\t|     Element     |\n *\t\t\t\t//\t+-----------------+\n *\t\t\t\t//\n *\t\t\t\ttargetRect => ( {\n *\t\t\t\t\ttop: targetRect.bottom,\n *\t\t\t\t\tleft: targetRect.left,\n *\t\t\t\t\tname: 'mySouthEastPosition'\n *\t\t\t\t} ),\n *\n *\t\t\t\t//\n *\t\t\t\t//\t+-----------------+\n *\t\t\t\t//\t|     Element     |\n *\t\t\t\t//\t+-----------------+\n *\t\t\t\t//\t[ Target ]\n *\t\t\t\t//\n *\t\t\t\t( targetRect, elementRect ) => ( {\n *\t\t\t\t\ttop: targetRect.top - elementRect.height,\n *\t\t\t\t\tleft: targetRect.left,\n *\t\t\t\t\tname: 'myNorthEastPosition'\n *\t\t\t\t} )\n *\t\t\t],\n *\n *\t\t\t// Find a position such guarantees the element remains within visible boundaries of <body>.\n *\t\t\tlimiter: document.body,\n *\n *\t\t\t// Find a position such guarantees the element remains within visible boundaries of the browser viewport.\n *\t\t\tfitInViewport: true\n *\t\t} );\n *\n *\t\t// The best position which fits into document.body and the viewport. May be useful\n *\t\t// to set proper class on the `element`.\n *\t\tconsole.log( name ); -> \"myNorthEastPosition\"\n *\n *\t\t// Using the absolute coordinates which has been found to position the element\n *\t\t// as in the diagram depicting the \"myNorthEastPosition\" position.\n *\t\telement.style.top = top;\n *\t\telement.style.left = left;\n *\n * @param {module:utils/dom/position~Options} options Positioning options object.\n * @returns {module:utils/dom/position~Position}\n */\nexport function getOptimalPosition( { element, target, positions, limiter, fitInViewport } ) {\n\tconst positionedElementAncestor = getPositionedAncestor( element.parentElement );\n\tconst elementRect = new Rect( element );\n\tconst targetRect = new Rect( target );\n\n\tlet bestPosition;\n\tlet name;\n\n\t// If there are no limits, just grab the very first position and be done with that drama.\n\tif ( !limiter && !fitInViewport ) {\n\t\t[ name, bestPosition ] = getPosition( positions[ 0 ], targetRect, elementRect );\n\t} else {\n\t\tconst limiterRect = limiter && new Rect( limiter );\n\t\tconst viewportRect = fitInViewport && Rect.getViewportRect();\n\n\t\t[ name, bestPosition ] =\n\t\t\tgetBestPosition( positions, targetRect, elementRect, limiterRect, viewportRect ) ||\n\t\t\t// If there's no best position found, i.e. when all intersections have no area because\n\t\t\t// rects have no width or height, then just use the first available position.\n\t\t\tgetPosition( positions[ 0 ], targetRect, elementRect );\n\t}\n\n\tlet { left, top } = getAbsoluteRectCoordinates( bestPosition );\n\n\t// (#126) If there's some positioned ancestor of the panel, then its rect must be taken into\n\t// consideration. `Rect` is always relative to the viewport while `position: absolute` works\n\t// with respect to that positioned ancestor.\n\tif ( positionedElementAncestor ) {\n\t\tconst ancestorPosition = getAbsoluteRectCoordinates( new Rect( positionedElementAncestor ) );\n\n\t\tleft -= ancestorPosition.left;\n\t\ttop -= ancestorPosition.top;\n\t}\n\n\treturn { left, top, name };\n}\n\n// For given position function, returns a corresponding `Rect` instance.\n//\n// @private\n// @param {Function} position A function returning {@link module:utils/dom/position~Position}.\n// @param {utils/dom/rect~Rect} targetRect A rect of the target.\n// @param {utils/dom/rect~Rect} elementRect A rect of positioned element.\n// @returns {Array} An array containing position name and its Rect.\nfunction getPosition( position, targetRect, elementRect ) {\n\tconst { left, top, name } = position( targetRect, elementRect );\n\n\treturn [ name, elementRect.clone().moveTo( left, top ) ];\n}\n\n// For a given array of positioning functions, returns such that provides the best\n// fit of the `elementRect` into the `limiterRect` and `viewportRect`.\n//\n// @private\n// @param {module:utils/dom/position~Options#positions} positions Functions returning\n// {@link module:utils/dom/position~Position} to be checked, in the order of preference.\n// @param {utils/dom/rect~Rect} targetRect A rect of the {@link module:utils/dom/position~Options#target}.\n// @param {utils/dom/rect~Rect} elementRect A rect of positioned {@link module:utils/dom/position~Options#element}.\n// @param {utils/dom/rect~Rect} limiterRect A rect of the {@link module:utils/dom/position~Options#limiter}.\n// @param {utils/dom/rect~Rect} viewportRect A rect of the viewport.\n// @returns {Array} An array containing the name of the position and it's rect.\nfunction getBestPosition( positions, targetRect, elementRect, limiterRect, viewportRect ) {\n\tlet maxLimiterIntersectArea = 0;\n\tlet maxViewportIntersectArea = 0;\n\tlet bestPositionRect;\n\tlet bestPositionName;\n\n\t// This is when element is fully visible.\n\tconst elementRectArea = elementRect.getArea();\n\n\tpositions.some( position => {\n\t\tconst [ positionName, positionRect ] = getPosition( position, targetRect, elementRect );\n\t\tlet limiterIntersectArea;\n\t\tlet viewportIntersectArea;\n\n\t\tif ( limiterRect ) {\n\t\t\tif ( viewportRect ) {\n\t\t\t\t// Consider only the part of the limiter which is visible in the viewport. So the limiter is getting limited.\n\t\t\t\tconst limiterViewportIntersectRect = limiterRect.getIntersection( viewportRect );\n\n\t\t\t\tif ( limiterViewportIntersectRect ) {\n\t\t\t\t\t// If the limiter is within the viewport, then check the intersection between that part of the\n\t\t\t\t\t// limiter and actual position.\n\t\t\t\t\tlimiterIntersectArea = limiterViewportIntersectRect.getIntersectionArea( positionRect );\n\t\t\t\t} else {\n\t\t\t\t\tlimiterIntersectArea = 0;\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\tlimiterIntersectArea = limiterRect.getIntersectionArea( positionRect );\n\t\t\t}\n\t\t}\n\n\t\tif ( viewportRect ) {\n\t\t\tviewportIntersectArea = viewportRect.getIntersectionArea( positionRect );\n\t\t}\n\n\t\t// The only criterion: intersection with the viewport.\n\t\tif ( viewportRect && !limiterRect ) {\n\t\t\tif ( viewportIntersectArea > maxViewportIntersectArea ) {\n\t\t\t\tsetBestPosition();\n\t\t\t}\n\t\t}\n\t\t// The only criterion: intersection with the limiter.\n\t\telse if ( !viewportRect && limiterRect ) {\n\t\t\tif ( limiterIntersectArea > maxLimiterIntersectArea ) {\n\t\t\t\tsetBestPosition();\n\t\t\t}\n\t\t}\n\t\t// Two criteria: intersection with the viewport and the limiter visible in the viewport.\n\t\telse {\n\t\t\tif ( viewportIntersectArea > maxViewportIntersectArea && limiterIntersectArea >= maxLimiterIntersectArea ) {\n\t\t\t\tsetBestPosition();\n\t\t\t} else if ( viewportIntersectArea >= maxViewportIntersectArea && limiterIntersectArea > maxLimiterIntersectArea ) {\n\t\t\t\tsetBestPosition();\n\t\t\t}\n\t\t}\n\n\t\tfunction setBestPosition() {\n\t\t\tmaxViewportIntersectArea = viewportIntersectArea;\n\t\t\tmaxLimiterIntersectArea = limiterIntersectArea;\n\t\t\tbestPositionRect = positionRect;\n\t\t\tbestPositionName = positionName;\n\t\t}\n\n\t\t// If a such position is found that element is fully container by the limiter then, obviously,\n\t\t// there will be no better one, so finishing.\n\t\treturn limiterIntersectArea === elementRectArea;\n\t} );\n\n\treturn bestPositionRect ? [ bestPositionName, bestPositionRect ] : null;\n}\n\n// DOMRect (also Rect) works in a scroll–independent geometry but `position: absolute` doesn't.\n// This function converts Rect to `position: absolute` coordinates.\n//\n// @private\n// @param {utils/dom/rect~Rect} rect A rect to be converted.\n// @returns {Object} Object containing `left` and `top` properties, in absolute coordinates.\nfunction getAbsoluteRectCoordinates( { left, top } ) {\n\tconst { scrollX, scrollY } = global.window;\n\n\treturn {\n\t\tleft: left + scrollX,\n\t\ttop: top + scrollY,\n\t};\n}\n\n/**\n * The `getOptimalPosition` helper options.\n *\n * @interface module:utils/dom/position~Options\n */\n\n/**\n * Element that is to be positioned.\n *\n * @member {HTMLElement} #element\n */\n\n/**\n * Target with respect to which the `element` is to be positioned.\n *\n * @member {HTMLElement|Range|ClientRect} #target\n */\n\n/**\n * An array of functions which return {@link module:utils/dom/position~Position} relative\n * to the `target`, in the order of preference.\n *\n * @member {Array.<Function>} #positions\n */\n\n/**\n * When set, the algorithm will chose position which fits the most in the\n * limiter's bounding rect.\n *\n * @member {HTMLElement|Range|ClientRect} #limiter\n */\n\n/**\n * When set, the algorithm will chose such a position which fits `element`\n * the most inside visible viewport.\n *\n * @member {Boolean} #fitInViewport\n */\n\n/**\n * An object describing a position in `position: absolute` coordinate\n * system, along with position name.\n *\n * @typedef {Object} module:utils/dom/position~Position\n *\n * @property {Number} top Top position offset.\n * @property {Number} left Left position offset.\n * @property {String} name Name of the position.\n */\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/dom/position.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/dom/rect\n */\n\nimport global from './global';\nimport isRange from './isrange';\nimport isElement from '../lib/lodash/isElement';\n\nconst rectProperties = [ 'top', 'right', 'bottom', 'left', 'width', 'height' ];\n\n/**\n * A helper class representing a `ClientRect` object, e.g. value returned by\n * the native `object.getBoundingClientRect()` method. Provides a set of methods\n * to manipulate the rect and compare it against other `Rect` instances.\n */\nexport default class Rect {\n\t/**\n\t * Creates an instance of rect.\n\t *\n\t *\t\t// Rect of an HTMLElement.\n\t *\t\tconst rectA = new Rect( document.body );\n\t *\n\t *\t\t// Rect of a DOM Range.\n\t *\t\tconst rectB = new Rect( document.getSelection().getRangeAt( 0 ) );\n\t *\n\t *\t\t// Rect out of an object.\n\t *\t\tconst rectC = new Rect( { top: 0, right: 10, bottom: 10, left: 0, width: 10, height: 10 } );\n\t *\n\t *\t\t// Rect out of another Rect instance.\n\t *\t\tconst rectD = new Rect( rectC );\n\t *\n\t *\t\t// Rect out of a ClientRect.\n\t *\t\tconst rectE = new Rect( document.body.getClientRects().item( 0 ) );\n\t *\n\t * @param {HTMLElement|Range|ClientRect|module:utils/dom/rect~Rect|Object} obj A source object to create the rect.\n\t */\n\tconstructor( obj ) {\n\t\tif ( isElement( obj ) || isRange( obj ) ) {\n\t\t\tobj = obj.getBoundingClientRect();\n\t\t}\n\n\t\trectProperties.forEach( p => this[ p ] = obj[ p ] );\n\n\t\t/**\n\t\t * The \"top\" value of the rect.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Number} #top\n\t\t */\n\n\t\t/**\n\t\t * The \"right\" value of the rect.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Number} #right\n\t\t */\n\n\t\t/**\n\t\t * The \"bottom\" value of the rect.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Number} #bottom\n\t\t */\n\n\t\t/**\n\t\t * The \"left\" value of the rect.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Number} #left\n\t\t */\n\n\t\t/**\n\t\t * The \"width\" value of the rect.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Number} #width\n\t\t */\n\n\t\t/**\n\t\t * The \"height\" value of the rect.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Number} #height\n\t\t */\n\t}\n\n\t/**\n\t * Returns a clone of the rect.\n\t *\n\t * @returns {module:utils/dom/rect~Rect} A cloned rect.\n\t */\n\tclone() {\n\t\treturn new Rect( this );\n\t}\n\n\t/**\n\t * Moves the rect so that its upper–left corner lands in desired `[ x, y ]` location.\n\t *\n\t * @param {Number} x Desired horizontal location.\n\t * @param {Number} y Desired vertical location.\n\t * @returns {module:utils/dom/rect~Rect} A rect which has been moved.\n\t */\n\tmoveTo( x, y ) {\n\t\tthis.top = y;\n\t\tthis.right = x + this.width;\n\t\tthis.bottom = y + this.height;\n\t\tthis.left = x;\n\n\t\treturn this;\n\t}\n\n\t/**\n\t * Moves the rect in–place by a dedicated offset.\n\t *\n\t * @param {Number} x A horizontal offset.\n\t * @param {Number} y A vertical offset\n\t * @returns {module:utils/dom/rect~Rect} A rect which has been moved.\n\t */\n\tmoveBy( x, y ) {\n\t\tthis.top += y;\n\t\tthis.right += x;\n\t\tthis.left += x;\n\t\tthis.bottom += y;\n\n\t\treturn this;\n\t}\n\n\t/**\n\t * Returns a new rect a a result of intersection with another rect.\n\t *\n\t * @param {module:utils/dom/rect~Rect} anotherRect\n\t * @returns {module:utils/dom/rect~Rect}\n\t */\n\tgetIntersection( anotherRect ) {\n\t\tconst rect = {\n\t\t\ttop: Math.max( this.top, anotherRect.top ),\n\t\t\tright: Math.min( this.right, anotherRect.right ),\n\t\t\tbottom: Math.min( this.bottom, anotherRect.bottom ),\n\t\t\tleft: Math.max( this.left, anotherRect.left )\n\t\t};\n\n\t\trect.width = rect.right - rect.left;\n\t\trect.height = rect.bottom - rect.top;\n\n\t\tif ( rect.width < 0 || rect.height < 0 ) {\n\t\t\treturn null;\n\t\t} else {\n\t\t\treturn new Rect( rect );\n\t\t}\n\t}\n\n\t/**\n\t * Returns the area of intersection with another rect.\n\t *\n\t * @param {module:utils/dom/rect~Rect} anotherRect [description]\n\t * @returns {Number} Area of intersection.\n\t */\n\tgetIntersectionArea( anotherRect ) {\n\t\tconst rect = this.getIntersection( anotherRect );\n\n\t\tif ( rect ) {\n\t\t\treturn rect.getArea();\n\t\t} else {\n\t\t\treturn 0;\n\t\t}\n\t}\n\n\t/**\n\t * Returns the area of the rect.\n\t *\n\t * @returns {Number}\n\t */\n\tgetArea() {\n\t\treturn this.width * this.height;\n\t}\n\n\t/**\n\t * Returns a rect of the web browser viewport.\n\t *\n\t * @returns {module:utils/dom/rect~Rect} A viewport rect.\n\t */\n\tstatic getViewportRect() {\n\t\tconst { innerWidth, innerHeight } = global.window;\n\n\t\treturn new Rect( {\n\t\t\ttop: 0,\n\t\t\tright: innerWidth,\n\t\t\tbottom: innerHeight,\n\t\t\tleft: 0,\n\t\t\twidth: innerWidth,\n\t\t\theight: innerHeight\n\t\t} );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/dom/rect.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/dom/remove\n */\n\n/**\n * Removes given node from parent.\n *\n * @param {Node} node Node to remove.\n */\nexport default function remove( node ) {\n\tconst parent = node.parentNode;\n\n\tif ( parent ) {\n\t\tparent.removeChild( node );\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/dom/remove.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/dom/setdatainelement\n */\n\n/* globals HTMLTextAreaElement */\n\n/**\n * Sets data in a given element.\n *\n * @param {HTMLElement} el The element in which the data will be set.\n * @param {String} data The data string.\n */\nexport default function setDataInElement( el, data ) {\n\tif ( el instanceof HTMLTextAreaElement ) {\n\t\tel.value = data;\n\t}\n\n\tel.innerHTML = data;\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/dom/setdatainelement.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/elementreplacer\n */\n\n/**\n * Utility class allowing to hide existing HTML elements or replace them with given ones in a way that doesn't remove\n * the original elements from the DOM.\n */\nexport default class ElementReplacer {\n\tconstructor() {\n\t\t/**\n\t\t * The elements replaced by {@link #replace} and their replacements.\n\t\t *\n\t\t * @private\n\t\t * @member {Array.<Object>}\n\t\t */\n\t\tthis._replacedElements = [];\n\t}\n\n\t/**\n\t * Hides the `element` and, if specified, inserts the the given element next to it.\n\t *\n\t * The effect of this method can be reverted by {@link #restore}.\n\t *\n\t * @param {HTMLElement} element The element to replace.\n\t * @param {HTMLElement} [newElement] The replacement element. If not passed, then the `element` will just be hidden.\n\t */\n\treplace( element, newElement ) {\n\t\tthis._replacedElements.push( { element, newElement } );\n\n\t\telement.style.display = 'none';\n\n\t\tif ( newElement ) {\n\t\t\telement.parentNode.insertBefore( newElement, element.nextSibling );\n\t\t}\n\t}\n\n\t/**\n\t * Restores what {@link #replace} did.\n\t */\n\trestore() {\n\t\tthis._replacedElements.forEach( ( { element, newElement } ) => {\n\t\t\telement.style.display = '';\n\n\t\t\tif ( newElement ) {\n\t\t\t\tnewElement.remove();\n\t\t\t}\n\t\t} );\n\n\t\tthis._replacedElements = [];\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/elementreplacer.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/* globals navigator:false */\n\n/**\n * @module utils/env\n */\n\nconst userAgent = navigator.userAgent.toLowerCase();\n\n/**\n * A namespace containing environment and browser information.\n *\n * @namespace\n */\nconst env = {\n\t/**\n\t * Indicates that application is running on Macintosh.\n\t *\n\t * @static\n\t * @member {Boolean} module:utils/env~env#mac\n\t */\n\tmac: isMac( userAgent )\n};\n\nexport default env;\n\n/**\n * Checks if User Agent represented by the string is running on Macintosh.\n *\n * @param {String} userAgent **Lowercase** `navigator.userAgent` string.\n * @returns {Boolean} Whether User Agent is running on Macintosh or not.\n */\nexport function isMac( userAgent ) {\n\treturn userAgent.indexOf( 'macintosh' ) > -1;\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/env.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/eventinfo\n */\n\nimport spy from './spy';\n\n/**\n * The event object passed to event callbacks. It is used to provide information about the event as well as a tool to\n * manipulate it.\n */\nexport default class EventInfo {\n\t/**\n\t * @param {Object} source The emitter.\n\t * @param {String} name The event name.\n\t */\n\tconstructor( source, name ) {\n\t\t/**\n\t\t * The object that fired the event.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Object}\n\t\t */\n\t\tthis.source = source;\n\n\t\t/**\n\t\t * The event name.\n\t\t *\n\t\t * @readonly\n\t\t * @member {String}\n\t\t */\n\t\tthis.name = name;\n\n\t\t/**\n\t\t * Path this event has followed. See {@link module:utils/emittermixin~EmitterMixin#delegate}.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Array.<Object>}\n\t\t */\n\t\tthis.path = [];\n\n\t\t// The following methods are defined in the constructor because they must be re-created per instance.\n\n\t\t/**\n\t\t * Stops the event emitter to call further callbacks for this event interaction.\n\t\t *\n\t\t * @method #stop\n\t\t */\n\t\tthis.stop = spy();\n\n\t\t/**\n\t\t * Removes the current callback from future interactions of this event.\n\t\t *\n\t\t * @method #off\n\t\t */\n\t\tthis.off = spy();\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/eventinfo.js","import getNative from './_getNative';\nimport root from './_root';\n\n/* Built-in method references that are verified to be native. */\nvar DataView = getNative(root, 'DataView');\n\nexport default DataView;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_DataView.js","import hashClear from './_hashClear';\nimport hashDelete from './_hashDelete';\nimport hashGet from './_hashGet';\nimport hashHas from './_hashHas';\nimport hashSet from './_hashSet';\n\n/**\n * Creates a hash object.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\nfunction Hash(entries) {\n  var index = -1,\n      length = entries ? entries.length : 0;\n\n  this.clear();\n  while (++index < length) {\n    var entry = entries[index];\n    this.set(entry[0], entry[1]);\n  }\n}\n\n// Add methods to `Hash`.\nHash.prototype.clear = hashClear;\nHash.prototype['delete'] = hashDelete;\nHash.prototype.get = hashGet;\nHash.prototype.has = hashHas;\nHash.prototype.set = hashSet;\n\nexport default Hash;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_Hash.js","import getNative from './_getNative';\nimport root from './_root';\n\n/* Built-in method references that are verified to be native. */\nvar Promise = getNative(root, 'Promise');\n\nexport default Promise;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_Promise.js","import root from './_root';\n\n/** Built-in value references. */\nvar Reflect = root.Reflect;\n\nexport default Reflect;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_Reflect.js","import getNative from './_getNative';\nimport root from './_root';\n\n/* Built-in method references that are verified to be native. */\nvar WeakMap = getNative(root, 'WeakMap');\n\nexport default WeakMap;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_WeakMap.js","/**\n * Adds the key-value `pair` to `map`.\n *\n * @private\n * @param {Object} map The map to modify.\n * @param {Array} pair The key-value pair to add.\n * @returns {Object} Returns `map`.\n */\nfunction addMapEntry(map, pair) {\n  // Don't return `Map#set` because it doesn't return the map instance in IE 11.\n  map.set(pair[0], pair[1]);\n  return map;\n}\n\nexport default addMapEntry;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_addMapEntry.js","/**\n * Adds `value` to `set`.\n *\n * @private\n * @param {Object} set The set to modify.\n * @param {*} value The value to add.\n * @returns {Object} Returns `set`.\n */\nfunction addSetEntry(set, value) {\n  set.add(value);\n  return set;\n}\n\nexport default addSetEntry;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_addSetEntry.js","/**\n * A specialized version of `_.forEach` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array} Returns `array`.\n */\nfunction arrayEach(array, iteratee) {\n  var index = -1,\n      length = array.length;\n\n  while (++index < length) {\n    if (iteratee(array[index], index, array) === false) {\n      break;\n    }\n  }\n  return array;\n}\n\nexport default arrayEach;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_arrayEach.js","/**\n * A specialized version of `_.some` for arrays without support for iteratee\n * shorthands.\n *\n * @private\n * @param {Array} array The array to iterate over.\n * @param {Function} predicate The function invoked per iteration.\n * @returns {boolean} Returns `true` if any element passes the predicate check,\n *  else `false`.\n */\nfunction arraySome(array, predicate) {\n  var index = -1,\n      length = array.length;\n\n  while (++index < length) {\n    if (predicate(array[index], index, array)) {\n      return true;\n    }\n  }\n  return false;\n}\n\nexport default arraySome;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_arraySome.js","import copyObject from './_copyObject';\nimport keys from './keys';\n\n/**\n * The base implementation of `_.assign` without support for multiple sources\n * or `customizer` functions.\n *\n * @private\n * @param {Object} object The destination object.\n * @param {Object} source The source object.\n * @returns {Object} Returns `object`.\n */\nfunction baseAssign(object, source) {\n  return object && copyObject(source, keys(source), object);\n}\n\nexport default baseAssign;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_baseAssign.js","import get from './get';\n\n/**\n * The base implementation of `_.at` without support for individual paths.\n *\n * @private\n * @param {Object} object The object to iterate over.\n * @param {string[]} paths The property paths of elements to pick.\n * @returns {Array} Returns the picked elements.\n */\nfunction baseAt(object, paths) {\n  var index = -1,\n      isNil = object == null,\n      length = paths.length,\n      result = Array(length);\n\n  while (++index < length) {\n    result[index] = isNil ? undefined : get(object, paths[index]);\n  }\n  return result;\n}\n\nexport default baseAt;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_baseAt.js","/**\n * The base implementation of `_.clamp` which doesn't coerce arguments to numbers.\n *\n * @private\n * @param {number} number The number to clamp.\n * @param {number} [lower] The lower bound.\n * @param {number} upper The upper bound.\n * @returns {number} Returns the clamped number.\n */\nfunction baseClamp(number, lower, upper) {\n  if (number === number) {\n    if (upper !== undefined) {\n      number = number <= upper ? number : upper;\n    }\n    if (lower !== undefined) {\n      number = number >= lower ? number : lower;\n    }\n  }\n  return number;\n}\n\nexport default baseClamp;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_baseClamp.js","import isObject from './isObject';\n\n/** Built-in value references. */\nvar objectCreate = Object.create;\n\n/**\n * The base implementation of `_.create` without support for assigning\n * properties to the created object.\n *\n * @private\n * @param {Object} prototype The object to inherit from.\n * @returns {Object} Returns the new object.\n */\nfunction baseCreate(proto) {\n  return isObject(proto) ? objectCreate(proto) : {};\n}\n\nexport default baseCreate;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_baseCreate.js","import toInteger from './toInteger';\nimport toLength from './toLength';\n\n/**\n * The base implementation of `_.fill` without an iteratee call guard.\n *\n * @private\n * @param {Array} array The array to fill.\n * @param {*} value The value to fill `array` with.\n * @param {number} [start=0] The start position.\n * @param {number} [end=array.length] The end position.\n * @returns {Array} Returns `array`.\n */\nfunction baseFill(array, value, start, end) {\n  var length = array.length;\n\n  start = toInteger(start);\n  if (start < 0) {\n    start = -start > length ? 0 : (length + start);\n  }\n  end = (end === undefined || end > length) ? length : toInteger(end);\n  if (end < 0) {\n    end += length;\n  }\n  end = start > end ? 0 : toLength(end);\n  while (start < end) {\n    array[start++] = value;\n  }\n  return array;\n}\n\nexport default baseFill;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_baseFill.js","import arrayPush from './_arrayPush';\nimport isArray from './isArray';\n\n/**\n * The base implementation of `getAllKeys` and `getAllKeysIn` which uses\n * `keysFunc` and `symbolsFunc` to get the enumerable property names and\n * symbols of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Function} keysFunc The function to get the keys of `object`.\n * @param {Function} symbolsFunc The function to get the symbols of `object`.\n * @returns {Array} Returns the array of property names and symbols.\n */\nfunction baseGetAllKeys(object, keysFunc, symbolsFunc) {\n  var result = keysFunc(object);\n  return isArray(object) ? result : arrayPush(result, symbolsFunc(object));\n}\n\nexport default baseGetAllKeys;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_baseGetAllKeys.js","/**\n * The base implementation of `_.hasIn` without support for deep paths.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array|string} key The key to check.\n * @returns {boolean} Returns `true` if `key` exists, else `false`.\n */\nfunction baseHasIn(object, key) {\n  return key in Object(object);\n}\n\nexport default baseHasIn;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_baseHasIn.js","/**\n * This function is like `baseIndexOf` except that it accepts a comparator.\n *\n * @private\n * @param {Array} array The array to search.\n * @param {*} value The value to search for.\n * @param {number} fromIndex The index to search from.\n * @param {Function} comparator The comparator invoked per element.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\nfunction baseIndexOfWith(array, value, fromIndex, comparator) {\n  var index = fromIndex - 1,\n      length = array.length;\n\n  while (++index < length) {\n    if (comparator(array[index], value)) {\n      return index;\n    }\n  }\n  return -1;\n}\n\nexport default baseIndexOfWith;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_baseIndexOfWith.js","import Stack from './_Stack';\nimport equalArrays from './_equalArrays';\nimport equalByTag from './_equalByTag';\nimport equalObjects from './_equalObjects';\nimport getTag from './_getTag';\nimport isArray from './isArray';\nimport isHostObject from './_isHostObject';\nimport isTypedArray from './isTypedArray';\n\n/** Used to compose bitmasks for comparison styles. */\nvar PARTIAL_COMPARE_FLAG = 2;\n\n/** `Object#toString` result references. */\nvar argsTag = '[object Arguments]',\n    arrayTag = '[object Array]',\n    objectTag = '[object Object]';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/**\n * A specialized version of `baseIsEqual` for arrays and objects which performs\n * deep comparisons and tracks traversed objects enabling objects with circular\n * references to be compared.\n *\n * @private\n * @param {Object} object The object to compare.\n * @param {Object} other The other object to compare.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Function} [customizer] The function to customize comparisons.\n * @param {number} [bitmask] The bitmask of comparison flags. See `baseIsEqual`\n *  for more details.\n * @param {Object} [stack] Tracks traversed `object` and `other` objects.\n * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n */\nfunction baseIsEqualDeep(object, other, equalFunc, customizer, bitmask, stack) {\n  var objIsArr = isArray(object),\n      othIsArr = isArray(other),\n      objTag = arrayTag,\n      othTag = arrayTag;\n\n  if (!objIsArr) {\n    objTag = getTag(object);\n    objTag = objTag == argsTag ? objectTag : objTag;\n  }\n  if (!othIsArr) {\n    othTag = getTag(other);\n    othTag = othTag == argsTag ? objectTag : othTag;\n  }\n  var objIsObj = objTag == objectTag && !isHostObject(object),\n      othIsObj = othTag == objectTag && !isHostObject(other),\n      isSameTag = objTag == othTag;\n\n  if (isSameTag && !objIsObj) {\n    stack || (stack = new Stack);\n    return (objIsArr || isTypedArray(object))\n      ? equalArrays(object, other, equalFunc, customizer, bitmask, stack)\n      : equalByTag(object, other, objTag, equalFunc, customizer, bitmask, stack);\n  }\n  if (!(bitmask & PARTIAL_COMPARE_FLAG)) {\n    var objIsWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'),\n        othIsWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__');\n\n    if (objIsWrapped || othIsWrapped) {\n      var objUnwrapped = objIsWrapped ? object.value() : object,\n          othUnwrapped = othIsWrapped ? other.value() : other;\n\n      stack || (stack = new Stack);\n      return equalFunc(objUnwrapped, othUnwrapped, customizer, bitmask, stack);\n    }\n  }\n  if (!isSameTag) {\n    return false;\n  }\n  stack || (stack = new Stack);\n  return equalObjects(object, other, equalFunc, customizer, bitmask, stack);\n}\n\nexport default baseIsEqualDeep;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_baseIsEqualDeep.js","import Stack from './_Stack';\nimport baseIsEqual from './_baseIsEqual';\n\n/** Used to compose bitmasks for comparison styles. */\nvar UNORDERED_COMPARE_FLAG = 1,\n    PARTIAL_COMPARE_FLAG = 2;\n\n/**\n * The base implementation of `_.isMatch` without support for iteratee shorthands.\n *\n * @private\n * @param {Object} object The object to inspect.\n * @param {Object} source The object of property values to match.\n * @param {Array} matchData The property names, values, and compare flags to match.\n * @param {Function} [customizer] The function to customize comparisons.\n * @returns {boolean} Returns `true` if `object` is a match, else `false`.\n */\nfunction baseIsMatch(object, source, matchData, customizer) {\n  var index = matchData.length,\n      length = index,\n      noCustomizer = !customizer;\n\n  if (object == null) {\n    return !length;\n  }\n  object = Object(object);\n  while (index--) {\n    var data = matchData[index];\n    if ((noCustomizer && data[2])\n          ? data[1] !== object[data[0]]\n          : !(data[0] in object)\n        ) {\n      return false;\n    }\n  }\n  while (++index < length) {\n    data = matchData[index];\n    var key = data[0],\n        objValue = object[key],\n        srcValue = data[1];\n\n    if (noCustomizer && data[2]) {\n      if (objValue === undefined && !(key in object)) {\n        return false;\n      }\n    } else {\n      var stack = new Stack;\n      if (customizer) {\n        var result = customizer(objValue, srcValue, key, object, source, stack);\n      }\n      if (!(result === undefined\n            ? baseIsEqual(srcValue, objValue, customizer, UNORDERED_COMPARE_FLAG | PARTIAL_COMPARE_FLAG, stack)\n            : result\n          )) {\n        return false;\n      }\n    }\n  }\n  return true;\n}\n\nexport default baseIsMatch;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_baseIsMatch.js","/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeKeys = Object.keys;\n\n/**\n * The base implementation of `_.keys` which doesn't skip the constructor\n * property of prototypes or treat sparse arrays as dense.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n */\nfunction baseKeys(object) {\n  return nativeKeys(Object(object));\n}\n\nexport default baseKeys;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_baseKeys.js","import Reflect from './_Reflect';\nimport iteratorToArray from './_iteratorToArray';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Built-in value references. */\nvar enumerate = Reflect ? Reflect.enumerate : undefined,\n    propertyIsEnumerable = objectProto.propertyIsEnumerable;\n\n/**\n * The base implementation of `_.keysIn` which doesn't skip the constructor\n * property of prototypes or treat sparse arrays as dense.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n */\nfunction baseKeysIn(object) {\n  object = object == null ? object : Object(object);\n\n  var result = [];\n  for (var key in object) {\n    result.push(key);\n  }\n  return result;\n}\n\n// Fallback for IE < 9 with es6-shim.\nif (enumerate && !propertyIsEnumerable.call({ 'valueOf': 1 }, 'valueOf')) {\n  baseKeysIn = function(object) {\n    return iteratorToArray(enumerate(object));\n  };\n}\n\nexport default baseKeysIn;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_baseKeysIn.js","import baseIsMatch from './_baseIsMatch';\nimport getMatchData from './_getMatchData';\nimport matchesStrictComparable from './_matchesStrictComparable';\n\n/**\n * The base implementation of `_.matches` which doesn't clone `source`.\n *\n * @private\n * @param {Object} source The object of property values to match.\n * @returns {Function} Returns the new spec function.\n */\nfunction baseMatches(source) {\n  var matchData = getMatchData(source);\n  if (matchData.length == 1 && matchData[0][2]) {\n    return matchesStrictComparable(matchData[0][0], matchData[0][1]);\n  }\n  return function(object) {\n    return object === source || baseIsMatch(object, source, matchData);\n  };\n}\n\nexport default baseMatches;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_baseMatches.js","import baseIsEqual from './_baseIsEqual';\nimport get from './get';\nimport hasIn from './hasIn';\nimport isKey from './_isKey';\nimport isStrictComparable from './_isStrictComparable';\nimport matchesStrictComparable from './_matchesStrictComparable';\nimport toKey from './_toKey';\n\n/** Used to compose bitmasks for comparison styles. */\nvar UNORDERED_COMPARE_FLAG = 1,\n    PARTIAL_COMPARE_FLAG = 2;\n\n/**\n * The base implementation of `_.matchesProperty` which doesn't clone `srcValue`.\n *\n * @private\n * @param {string} path The path of the property to get.\n * @param {*} srcValue The value to match.\n * @returns {Function} Returns the new spec function.\n */\nfunction baseMatchesProperty(path, srcValue) {\n  if (isKey(path) && isStrictComparable(srcValue)) {\n    return matchesStrictComparable(toKey(path), srcValue);\n  }\n  return function(object) {\n    var objValue = get(object, path);\n    return (objValue === undefined && objValue === srcValue)\n      ? hasIn(object, path)\n      : baseIsEqual(srcValue, objValue, undefined, UNORDERED_COMPARE_FLAG | PARTIAL_COMPARE_FLAG);\n  };\n}\n\nexport default baseMatchesProperty;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_baseMatchesProperty.js","import isIndex from './_isIndex';\n\n/**\n * The base implementation of `_.nth` which doesn't coerce `n` to an integer.\n *\n * @private\n * @param {Array} array The array to query.\n * @param {number} n The index of the element to return.\n * @returns {*} Returns the nth element of `array`.\n */\nfunction baseNth(array, n) {\n  var length = array.length;\n  if (!length) {\n    return;\n  }\n  n += n < 0 ? length : 0;\n  return isIndex(n, length) ? array[n] : undefined;\n}\n\nexport default baseNth;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_baseNth.js","import baseGet from './_baseGet';\n\n/**\n * A specialized version of `baseProperty` which supports deep paths.\n *\n * @private\n * @param {Array|string} path The path of the property to get.\n * @returns {Function} Returns the new accessor function.\n */\nfunction basePropertyDeep(path) {\n  return function(object) {\n    return baseGet(object, path);\n  };\n}\n\nexport default basePropertyDeep;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_basePropertyDeep.js","import assignValue from './_assignValue';\nimport castPath from './_castPath';\nimport isIndex from './_isIndex';\nimport isKey from './_isKey';\nimport isObject from './isObject';\nimport toKey from './_toKey';\n\n/**\n * The base implementation of `_.set`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array|string} path The path of the property to set.\n * @param {*} value The value to set.\n * @param {Function} [customizer] The function to customize path creation.\n * @returns {Object} Returns `object`.\n */\nfunction baseSet(object, path, value, customizer) {\n  path = isKey(path, object) ? [path] : castPath(path);\n\n  var index = -1,\n      length = path.length,\n      lastIndex = length - 1,\n      nested = object;\n\n  while (nested != null && ++index < length) {\n    var key = toKey(path[index]);\n    if (isObject(nested)) {\n      var newValue = value;\n      if (index != lastIndex) {\n        var objValue = nested[key];\n        newValue = customizer ? customizer(objValue, key, nested) : undefined;\n        if (newValue === undefined) {\n          newValue = objValue == null\n            ? (isIndex(path[index + 1]) ? [] : {})\n            : objValue;\n        }\n      }\n      assignValue(nested, key, newValue);\n    }\n    nested = nested[key];\n  }\n  return object;\n}\n\nexport default baseSet;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_baseSet.js","import arrayMap from './_arrayMap';\n\n/**\n * The base implementation of `_.toPairs` and `_.toPairsIn` which creates an array\n * of key-value pairs for `object` corresponding to the property names of `props`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array} props The property names to get values for.\n * @returns {Object} Returns the key-value pairs.\n */\nfunction baseToPairs(object, props) {\n  return arrayMap(props, function(key) {\n    return [key, object[key]];\n  });\n}\n\nexport default baseToPairs;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_baseToPairs.js","import Symbol from './_Symbol';\nimport isSymbol from './isSymbol';\n\n/** Used as references for various `Number` constants. */\nvar INFINITY = 1 / 0;\n\n/** Used to convert symbols to primitives and strings. */\nvar symbolProto = Symbol ? Symbol.prototype : undefined,\n    symbolToString = symbolProto ? symbolProto.toString : undefined;\n\n/**\n * The base implementation of `_.toString` which doesn't convert nullish\n * values to empty strings.\n *\n * @private\n * @param {*} value The value to process.\n * @returns {string} Returns the string.\n */\nfunction baseToString(value) {\n  // Exit early for strings to avoid a performance hit in some environments.\n  if (typeof value == 'string') {\n    return value;\n  }\n  if (isSymbol(value)) {\n    return symbolToString ? symbolToString.call(value) : '';\n  }\n  var result = (value + '');\n  return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;\n}\n\nexport default baseToString;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_baseToString.js","/**\n * Checks if `value` is a global object.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {null|Object} Returns `value` if it's a global object, else `null`.\n */\nfunction checkGlobal(value) {\n  return (value && value.Object === Object) ? value : null;\n}\n\nexport default checkGlobal;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_checkGlobal.js","/**\n * Creates a clone of  `buffer`.\n *\n * @private\n * @param {Buffer} buffer The buffer to clone.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Buffer} Returns the cloned buffer.\n */\nfunction cloneBuffer(buffer, isDeep) {\n  if (isDeep) {\n    return buffer.slice();\n  }\n  var result = new buffer.constructor(buffer.length);\n  buffer.copy(result);\n  return result;\n}\n\nexport default cloneBuffer;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_cloneBuffer.js","import cloneArrayBuffer from './_cloneArrayBuffer';\n\n/**\n * Creates a clone of `dataView`.\n *\n * @private\n * @param {Object} dataView The data view to clone.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Object} Returns the cloned data view.\n */\nfunction cloneDataView(dataView, isDeep) {\n  var buffer = isDeep ? cloneArrayBuffer(dataView.buffer) : dataView.buffer;\n  return new dataView.constructor(buffer, dataView.byteOffset, dataView.byteLength);\n}\n\nexport default cloneDataView;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_cloneDataView.js","import addMapEntry from './_addMapEntry';\nimport arrayReduce from './_arrayReduce';\nimport mapToArray from './_mapToArray';\n\n/**\n * Creates a clone of `map`.\n *\n * @private\n * @param {Object} map The map to clone.\n * @param {Function} cloneFunc The function to clone values.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Object} Returns the cloned map.\n */\nfunction cloneMap(map, isDeep, cloneFunc) {\n  var array = isDeep ? cloneFunc(mapToArray(map), true) : mapToArray(map);\n  return arrayReduce(array, addMapEntry, new map.constructor);\n}\n\nexport default cloneMap;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_cloneMap.js","/** Used to match `RegExp` flags from their coerced string values. */\nvar reFlags = /\\w*$/;\n\n/**\n * Creates a clone of `regexp`.\n *\n * @private\n * @param {Object} regexp The regexp to clone.\n * @returns {Object} Returns the cloned regexp.\n */\nfunction cloneRegExp(regexp) {\n  var result = new regexp.constructor(regexp.source, reFlags.exec(regexp));\n  result.lastIndex = regexp.lastIndex;\n  return result;\n}\n\nexport default cloneRegExp;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_cloneRegExp.js","import addSetEntry from './_addSetEntry';\nimport arrayReduce from './_arrayReduce';\nimport setToArray from './_setToArray';\n\n/**\n * Creates a clone of `set`.\n *\n * @private\n * @param {Object} set The set to clone.\n * @param {Function} cloneFunc The function to clone values.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Object} Returns the cloned set.\n */\nfunction cloneSet(set, isDeep, cloneFunc) {\n  var array = isDeep ? cloneFunc(setToArray(set), true) : setToArray(set);\n  return arrayReduce(array, addSetEntry, new set.constructor);\n}\n\nexport default cloneSet;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_cloneSet.js","import Symbol from './_Symbol';\n\n/** Used to convert symbols to primitives and strings. */\nvar symbolProto = Symbol ? Symbol.prototype : undefined,\n    symbolValueOf = symbolProto ? symbolProto.valueOf : undefined;\n\n/**\n * Creates a clone of the `symbol` object.\n *\n * @private\n * @param {Object} symbol The symbol object to clone.\n * @returns {Object} Returns the cloned symbol object.\n */\nfunction cloneSymbol(symbol) {\n  return symbolValueOf ? Object(symbolValueOf.call(symbol)) : {};\n}\n\nexport default cloneSymbol;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_cloneSymbol.js","import cloneArrayBuffer from './_cloneArrayBuffer';\n\n/**\n * Creates a clone of `typedArray`.\n *\n * @private\n * @param {Object} typedArray The typed array to clone.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Object} Returns the cloned typed array.\n */\nfunction cloneTypedArray(typedArray, isDeep) {\n  var buffer = isDeep ? cloneArrayBuffer(typedArray.buffer) : typedArray.buffer;\n  return new typedArray.constructor(buffer, typedArray.byteOffset, typedArray.length);\n}\n\nexport default cloneTypedArray;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_cloneTypedArray.js","import isSymbol from './isSymbol';\n\n/**\n * Compares values to sort them in ascending order.\n *\n * @private\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {number} Returns the sort order indicator for `value`.\n */\nfunction compareAscending(value, other) {\n  if (value !== other) {\n    var valIsDefined = value !== undefined,\n        valIsNull = value === null,\n        valIsReflexive = value === value,\n        valIsSymbol = isSymbol(value);\n\n    var othIsDefined = other !== undefined,\n        othIsNull = other === null,\n        othIsReflexive = other === other,\n        othIsSymbol = isSymbol(other);\n\n    if ((!othIsNull && !othIsSymbol && !valIsSymbol && value > other) ||\n        (valIsSymbol && othIsDefined && othIsReflexive && !othIsNull && !othIsSymbol) ||\n        (valIsNull && othIsDefined && othIsReflexive) ||\n        (!valIsDefined && othIsReflexive) ||\n        !valIsReflexive) {\n      return 1;\n    }\n    if ((!valIsNull && !valIsSymbol && !othIsSymbol && value < other) ||\n        (othIsSymbol && valIsDefined && valIsReflexive && !valIsNull && !valIsSymbol) ||\n        (othIsNull && valIsDefined && valIsReflexive) ||\n        (!othIsDefined && valIsReflexive) ||\n        !othIsReflexive) {\n      return -1;\n    }\n  }\n  return 0;\n}\n\nexport default compareAscending;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_compareAscending.js","import copyObject from './_copyObject';\nimport getSymbols from './_getSymbols';\n\n/**\n * Copies own symbol properties of `source` to `object`.\n *\n * @private\n * @param {Object} source The object to copy symbols from.\n * @param {Object} [object={}] The object to copy symbols to.\n * @returns {Object} Returns `object`.\n */\nfunction copySymbols(source, object) {\n  return copyObject(source, getSymbols(source), object);\n}\n\nexport default copySymbols;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_copySymbols.js","import isIterateeCall from './_isIterateeCall';\nimport rest from './rest';\n\n/**\n * Creates a function like `_.assign`.\n *\n * @private\n * @param {Function} assigner The function to assign values.\n * @returns {Function} Returns the new assigner function.\n */\nfunction createAssigner(assigner) {\n  return rest(function(object, sources) {\n    var index = -1,\n        length = sources.length,\n        customizer = length > 1 ? sources[length - 1] : undefined,\n        guard = length > 2 ? sources[2] : undefined;\n\n    customizer = (assigner.length > 3 && typeof customizer == 'function')\n      ? (length--, customizer)\n      : undefined;\n\n    if (guard && isIterateeCall(sources[0], sources[1], guard)) {\n      customizer = length < 3 ? undefined : customizer;\n      length = 1;\n    }\n    object = Object(object);\n    while (++index < length) {\n      var source = sources[index];\n      if (source) {\n        assigner(object, source, index, customizer);\n      }\n    }\n    return object;\n  });\n}\n\nexport default createAssigner;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_createAssigner.js","import Set from './_Set';\nimport noop from './noop';\nimport setToArray from './_setToArray';\n\n/** Used as references for various `Number` constants. */\nvar INFINITY = 1 / 0;\n\n/**\n * Creates a set of `values`.\n *\n * @private\n * @param {Array} values The values to add to the set.\n * @returns {Object} Returns the new set.\n */\nvar createSet = !(Set && (1 / setToArray(new Set([,-0]))[1]) == INFINITY) ? noop : function(values) {\n  return new Set(values);\n};\n\nexport default createSet;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_createSet.js","import baseToPairs from './_baseToPairs';\nimport getTag from './_getTag';\nimport mapToArray from './_mapToArray';\nimport setToPairs from './_setToPairs';\n\n/** `Object#toString` result references. */\nvar mapTag = '[object Map]',\n    setTag = '[object Set]';\n\n/**\n * Creates a `_.toPairs` or `_.toPairsIn` function.\n *\n * @private\n * @param {Function} keysFunc The function to get the keys of a given object.\n * @returns {Function} Returns the new pairs function.\n */\nfunction createToPairs(keysFunc) {\n  return function(object) {\n    var tag = getTag(object);\n    if (tag == mapTag) {\n      return mapToArray(object);\n    }\n    if (tag == setTag) {\n      return setToPairs(object);\n    }\n    return baseToPairs(object, keysFunc(object));\n  };\n}\n\nexport default createToPairs;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_createToPairs.js","import Symbol from './_Symbol';\nimport Uint8Array from './_Uint8Array';\nimport equalArrays from './_equalArrays';\nimport mapToArray from './_mapToArray';\nimport setToArray from './_setToArray';\n\n/** Used to compose bitmasks for comparison styles. */\nvar UNORDERED_COMPARE_FLAG = 1,\n    PARTIAL_COMPARE_FLAG = 2;\n\n/** `Object#toString` result references. */\nvar boolTag = '[object Boolean]',\n    dateTag = '[object Date]',\n    errorTag = '[object Error]',\n    mapTag = '[object Map]',\n    numberTag = '[object Number]',\n    regexpTag = '[object RegExp]',\n    setTag = '[object Set]',\n    stringTag = '[object String]',\n    symbolTag = '[object Symbol]';\n\nvar arrayBufferTag = '[object ArrayBuffer]',\n    dataViewTag = '[object DataView]';\n\n/** Used to convert symbols to primitives and strings. */\nvar symbolProto = Symbol ? Symbol.prototype : undefined,\n    symbolValueOf = symbolProto ? symbolProto.valueOf : undefined;\n\n/**\n * A specialized version of `baseIsEqualDeep` for comparing objects of\n * the same `toStringTag`.\n *\n * **Note:** This function only supports comparing values with tags of\n * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.\n *\n * @private\n * @param {Object} object The object to compare.\n * @param {Object} other The other object to compare.\n * @param {string} tag The `toStringTag` of the objects to compare.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Function} customizer The function to customize comparisons.\n * @param {number} bitmask The bitmask of comparison flags. See `baseIsEqual`\n *  for more details.\n * @param {Object} stack Tracks traversed `object` and `other` objects.\n * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n */\nfunction equalByTag(object, other, tag, equalFunc, customizer, bitmask, stack) {\n  switch (tag) {\n    case dataViewTag:\n      if ((object.byteLength != other.byteLength) ||\n          (object.byteOffset != other.byteOffset)) {\n        return false;\n      }\n      object = object.buffer;\n      other = other.buffer;\n\n    case arrayBufferTag:\n      if ((object.byteLength != other.byteLength) ||\n          !equalFunc(new Uint8Array(object), new Uint8Array(other))) {\n        return false;\n      }\n      return true;\n\n    case boolTag:\n    case dateTag:\n      // Coerce dates and booleans to numbers, dates to milliseconds and\n      // booleans to `1` or `0` treating invalid dates coerced to `NaN` as\n      // not equal.\n      return +object == +other;\n\n    case errorTag:\n      return object.name == other.name && object.message == other.message;\n\n    case numberTag:\n      // Treat `NaN` vs. `NaN` as equal.\n      return (object != +object) ? other != +other : object == +other;\n\n    case regexpTag:\n    case stringTag:\n      // Coerce regexes to strings and treat strings, primitives and objects,\n      // as equal. See http://www.ecma-international.org/ecma-262/6.0/#sec-regexp.prototype.tostring\n      // for more details.\n      return object == (other + '');\n\n    case mapTag:\n      var convert = mapToArray;\n\n    case setTag:\n      var isPartial = bitmask & PARTIAL_COMPARE_FLAG;\n      convert || (convert = setToArray);\n\n      if (object.size != other.size && !isPartial) {\n        return false;\n      }\n      // Assume cyclic values are equal.\n      var stacked = stack.get(object);\n      if (stacked) {\n        return stacked == other;\n      }\n      bitmask |= UNORDERED_COMPARE_FLAG;\n      stack.set(object, other);\n\n      // Recursively compare objects (susceptible to call stack limits).\n      return equalArrays(convert(object), convert(other), equalFunc, customizer, bitmask, stack);\n\n    case symbolTag:\n      if (symbolValueOf) {\n        return symbolValueOf.call(object) == symbolValueOf.call(other);\n      }\n  }\n  return false;\n}\n\nexport default equalByTag;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_equalByTag.js","import baseHas from './_baseHas';\nimport keys from './keys';\n\n/** Used to compose bitmasks for comparison styles. */\nvar PARTIAL_COMPARE_FLAG = 2;\n\n/**\n * A specialized version of `baseIsEqualDeep` for objects with support for\n * partial deep comparisons.\n *\n * @private\n * @param {Object} object The object to compare.\n * @param {Object} other The other object to compare.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Function} customizer The function to customize comparisons.\n * @param {number} bitmask The bitmask of comparison flags. See `baseIsEqual`\n *  for more details.\n * @param {Object} stack Tracks traversed `object` and `other` objects.\n * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n */\nfunction equalObjects(object, other, equalFunc, customizer, bitmask, stack) {\n  var isPartial = bitmask & PARTIAL_COMPARE_FLAG,\n      objProps = keys(object),\n      objLength = objProps.length,\n      othProps = keys(other),\n      othLength = othProps.length;\n\n  if (objLength != othLength && !isPartial) {\n    return false;\n  }\n  var index = objLength;\n  while (index--) {\n    var key = objProps[index];\n    if (!(isPartial ? key in other : baseHas(other, key))) {\n      return false;\n    }\n  }\n  // Assume cyclic values are equal.\n  var stacked = stack.get(object);\n  if (stacked) {\n    return stacked == other;\n  }\n  var result = true;\n  stack.set(object, other);\n\n  var skipCtor = isPartial;\n  while (++index < objLength) {\n    key = objProps[index];\n    var objValue = object[key],\n        othValue = other[key];\n\n    if (customizer) {\n      var compared = isPartial\n        ? customizer(othValue, objValue, key, other, object, stack)\n        : customizer(objValue, othValue, key, object, other, stack);\n    }\n    // Recursively compare objects (susceptible to call stack limits).\n    if (!(compared === undefined\n          ? (objValue === othValue || equalFunc(objValue, othValue, customizer, bitmask, stack))\n          : compared\n        )) {\n      result = false;\n      break;\n    }\n    skipCtor || (skipCtor = key == 'constructor');\n  }\n  if (result && !skipCtor) {\n    var objCtor = object.constructor,\n        othCtor = other.constructor;\n\n    // Non `Object` object instances with different constructors are not equal.\n    if (objCtor != othCtor &&\n        ('constructor' in object && 'constructor' in other) &&\n        !(typeof objCtor == 'function' && objCtor instanceof objCtor &&\n          typeof othCtor == 'function' && othCtor instanceof othCtor)) {\n      result = false;\n    }\n  }\n  stack['delete'](object);\n  return result;\n}\n\nexport default equalObjects;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_equalObjects.js","import baseGetAllKeys from './_baseGetAllKeys';\nimport getSymbols from './_getSymbols';\nimport keys from './keys';\n\n/**\n * Creates an array of own enumerable property names and symbols of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names and symbols.\n */\nfunction getAllKeys(object) {\n  return baseGetAllKeys(object, keys, getSymbols);\n}\n\nexport default getAllKeys;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_getAllKeys.js","import baseProperty from './_baseProperty';\n\n/**\n * Gets the \"length\" property value of `object`.\n *\n * **Note:** This function is used to avoid a\n * [JIT bug](https://bugs.webkit.org/show_bug.cgi?id=142792) that affects\n * Safari on at least iOS 8.1-8.3 ARM64.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {*} Returns the \"length\" value.\n */\nvar getLength = baseProperty('length');\n\nexport default getLength;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_getLength.js","import isStrictComparable from './_isStrictComparable';\nimport toPairs from './toPairs';\n\n/**\n * Gets the property names, values, and compare flags of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the match data of `object`.\n */\nfunction getMatchData(object) {\n  var result = toPairs(object),\n      length = result.length;\n\n  while (length--) {\n    result[length][2] = isStrictComparable(result[length][1]);\n  }\n  return result;\n}\n\nexport default getMatchData;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_getMatchData.js","import castPath from './_castPath';\nimport isArguments from './isArguments';\nimport isArray from './isArray';\nimport isIndex from './_isIndex';\nimport isKey from './_isKey';\nimport isLength from './isLength';\nimport isString from './isString';\nimport toKey from './_toKey';\n\n/**\n * Checks if `path` exists on `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array|string} path The path to check.\n * @param {Function} hasFunc The function to check properties.\n * @returns {boolean} Returns `true` if `path` exists, else `false`.\n */\nfunction hasPath(object, path, hasFunc) {\n  path = isKey(path, object) ? [path] : castPath(path);\n\n  var result,\n      index = -1,\n      length = path.length;\n\n  while (++index < length) {\n    var key = toKey(path[index]);\n    if (!(result = object != null && hasFunc(object, key))) {\n      break;\n    }\n    object = object[key];\n  }\n  if (result) {\n    return result;\n  }\n  var length = object ? object.length : 0;\n  return !!length && isLength(length) && isIndex(key, length) &&\n    (isArray(object) || isString(object) || isArguments(object));\n}\n\nexport default hasPath;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_hasPath.js","import nativeCreate from './_nativeCreate';\n\n/**\n * Removes all key-value entries from the hash.\n *\n * @private\n * @name clear\n * @memberOf Hash\n */\nfunction hashClear() {\n  this.__data__ = nativeCreate ? nativeCreate(null) : {};\n}\n\nexport default hashClear;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_hashClear.js","/**\n * Removes `key` and its value from the hash.\n *\n * @private\n * @name delete\n * @memberOf Hash\n * @param {Object} hash The hash to modify.\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\nfunction hashDelete(key) {\n  return this.has(key) && delete this.__data__[key];\n}\n\nexport default hashDelete;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_hashDelete.js","import nativeCreate from './_nativeCreate';\n\n/** Used to stand-in for `undefined` hash values. */\nvar HASH_UNDEFINED = '__lodash_hash_undefined__';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/**\n * Gets the hash value for `key`.\n *\n * @private\n * @name get\n * @memberOf Hash\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\nfunction hashGet(key) {\n  var data = this.__data__;\n  if (nativeCreate) {\n    var result = data[key];\n    return result === HASH_UNDEFINED ? undefined : result;\n  }\n  return hasOwnProperty.call(data, key) ? data[key] : undefined;\n}\n\nexport default hashGet;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_hashGet.js","import nativeCreate from './_nativeCreate';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/**\n * Checks if a hash value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf Hash\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\nfunction hashHas(key) {\n  var data = this.__data__;\n  return nativeCreate ? data[key] !== undefined : hasOwnProperty.call(data, key);\n}\n\nexport default hashHas;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_hashHas.js","import nativeCreate from './_nativeCreate';\n\n/** Used to stand-in for `undefined` hash values. */\nvar HASH_UNDEFINED = '__lodash_hash_undefined__';\n\n/**\n * Sets the hash `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf Hash\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the hash instance.\n */\nfunction hashSet(key, value) {\n  var data = this.__data__;\n  data[key] = (nativeCreate && value === undefined) ? HASH_UNDEFINED : value;\n  return this;\n}\n\nexport default hashSet;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_hashSet.js","/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/**\n * Initializes an array clone.\n *\n * @private\n * @param {Array} array The array to clone.\n * @returns {Array} Returns the initialized clone.\n */\nfunction initCloneArray(array) {\n  var length = array.length,\n      result = array.constructor(length);\n\n  // Add properties assigned by `RegExp#exec`.\n  if (length && typeof array[0] == 'string' && hasOwnProperty.call(array, 'index')) {\n    result.index = array.index;\n    result.input = array.input;\n  }\n  return result;\n}\n\nexport default initCloneArray;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_initCloneArray.js","import cloneArrayBuffer from './_cloneArrayBuffer';\nimport cloneDataView from './_cloneDataView';\nimport cloneMap from './_cloneMap';\nimport cloneRegExp from './_cloneRegExp';\nimport cloneSet from './_cloneSet';\nimport cloneSymbol from './_cloneSymbol';\nimport cloneTypedArray from './_cloneTypedArray';\n\n/** `Object#toString` result references. */\nvar boolTag = '[object Boolean]',\n    dateTag = '[object Date]',\n    mapTag = '[object Map]',\n    numberTag = '[object Number]',\n    regexpTag = '[object RegExp]',\n    setTag = '[object Set]',\n    stringTag = '[object String]',\n    symbolTag = '[object Symbol]';\n\nvar arrayBufferTag = '[object ArrayBuffer]',\n    dataViewTag = '[object DataView]',\n    float32Tag = '[object Float32Array]',\n    float64Tag = '[object Float64Array]',\n    int8Tag = '[object Int8Array]',\n    int16Tag = '[object Int16Array]',\n    int32Tag = '[object Int32Array]',\n    uint8Tag = '[object Uint8Array]',\n    uint8ClampedTag = '[object Uint8ClampedArray]',\n    uint16Tag = '[object Uint16Array]',\n    uint32Tag = '[object Uint32Array]';\n\n/**\n * Initializes an object clone based on its `toStringTag`.\n *\n * **Note:** This function only supports cloning values with tags of\n * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.\n *\n * @private\n * @param {Object} object The object to clone.\n * @param {string} tag The `toStringTag` of the object to clone.\n * @param {Function} cloneFunc The function to clone values.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Object} Returns the initialized clone.\n */\nfunction initCloneByTag(object, tag, cloneFunc, isDeep) {\n  var Ctor = object.constructor;\n  switch (tag) {\n    case arrayBufferTag:\n      return cloneArrayBuffer(object);\n\n    case boolTag:\n    case dateTag:\n      return new Ctor(+object);\n\n    case dataViewTag:\n      return cloneDataView(object, isDeep);\n\n    case float32Tag: case float64Tag:\n    case int8Tag: case int16Tag: case int32Tag:\n    case uint8Tag: case uint8ClampedTag: case uint16Tag: case uint32Tag:\n      return cloneTypedArray(object, isDeep);\n\n    case mapTag:\n      return cloneMap(object, isDeep, cloneFunc);\n\n    case numberTag:\n    case stringTag:\n      return new Ctor(object);\n\n    case regexpTag:\n      return cloneRegExp(object);\n\n    case setTag:\n      return cloneSet(object, isDeep, cloneFunc);\n\n    case symbolTag:\n      return cloneSymbol(object);\n  }\n}\n\nexport default initCloneByTag;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_initCloneByTag.js","import baseCreate from './_baseCreate';\nimport getPrototype from './_getPrototype';\nimport isPrototype from './_isPrototype';\n\n/**\n * Initializes an object clone.\n *\n * @private\n * @param {Object} object The object to clone.\n * @returns {Object} Returns the initialized clone.\n */\nfunction initCloneObject(object) {\n  return (typeof object.constructor == 'function' && !isPrototype(object))\n    ? baseCreate(getPrototype(object))\n    : {};\n}\n\nexport default initCloneObject;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_initCloneObject.js","import isArguments from './isArguments';\nimport isArray from './isArray';\n\n/**\n * Checks if `value` is a flattenable `arguments` object or array.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is flattenable, else `false`.\n */\nfunction isFlattenable(value) {\n  return isArray(value) || isArguments(value);\n}\n\nexport default isFlattenable;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_isFlattenable.js","/**\n * Checks if `value` is suitable for use as unique object key.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is suitable, else `false`.\n */\nfunction isKeyable(value) {\n  var type = typeof value;\n  return (type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean')\n    ? (value !== '__proto__')\n    : (value === null);\n}\n\nexport default isKeyable;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_isKeyable.js","/**\n * Converts `iterator` to an array.\n *\n * @private\n * @param {Object} iterator The iterator to convert.\n * @returns {Array} Returns the converted array.\n */\nfunction iteratorToArray(iterator) {\n  var data,\n      result = [];\n\n  while (!(data = iterator.next()).done) {\n    result.push(data.value);\n  }\n  return result;\n}\n\nexport default iteratorToArray;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_iteratorToArray.js","/**\n * Removes all key-value entries from the list cache.\n *\n * @private\n * @name clear\n * @memberOf ListCache\n */\nfunction listCacheClear() {\n  this.__data__ = [];\n}\n\nexport default listCacheClear;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_listCacheClear.js","import assocIndexOf from './_assocIndexOf';\n\n/** Used for built-in method references. */\nvar arrayProto = Array.prototype;\n\n/** Built-in value references. */\nvar splice = arrayProto.splice;\n\n/**\n * Removes `key` and its value from the list cache.\n *\n * @private\n * @name delete\n * @memberOf ListCache\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\nfunction listCacheDelete(key) {\n  var data = this.__data__,\n      index = assocIndexOf(data, key);\n\n  if (index < 0) {\n    return false;\n  }\n  var lastIndex = data.length - 1;\n  if (index == lastIndex) {\n    data.pop();\n  } else {\n    splice.call(data, index, 1);\n  }\n  return true;\n}\n\nexport default listCacheDelete;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_listCacheDelete.js","import assocIndexOf from './_assocIndexOf';\n\n/**\n * Gets the list cache value for `key`.\n *\n * @private\n * @name get\n * @memberOf ListCache\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\nfunction listCacheGet(key) {\n  var data = this.__data__,\n      index = assocIndexOf(data, key);\n\n  return index < 0 ? undefined : data[index][1];\n}\n\nexport default listCacheGet;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_listCacheGet.js","import assocIndexOf from './_assocIndexOf';\n\n/**\n * Checks if a list cache value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf ListCache\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\nfunction listCacheHas(key) {\n  return assocIndexOf(this.__data__, key) > -1;\n}\n\nexport default listCacheHas;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_listCacheHas.js","import assocIndexOf from './_assocIndexOf';\n\n/**\n * Sets the list cache `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf ListCache\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the list cache instance.\n */\nfunction listCacheSet(key, value) {\n  var data = this.__data__,\n      index = assocIndexOf(data, key);\n\n  if (index < 0) {\n    data.push([key, value]);\n  } else {\n    data[index][1] = value;\n  }\n  return this;\n}\n\nexport default listCacheSet;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_listCacheSet.js","import Hash from './_Hash';\nimport ListCache from './_ListCache';\nimport Map from './_Map';\n\n/**\n * Removes all key-value entries from the map.\n *\n * @private\n * @name clear\n * @memberOf MapCache\n */\nfunction mapCacheClear() {\n  this.__data__ = {\n    'hash': new Hash,\n    'map': new (Map || ListCache),\n    'string': new Hash\n  };\n}\n\nexport default mapCacheClear;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_mapCacheClear.js","import getMapData from './_getMapData';\n\n/**\n * Removes `key` and its value from the map.\n *\n * @private\n * @name delete\n * @memberOf MapCache\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\nfunction mapCacheDelete(key) {\n  return getMapData(this, key)['delete'](key);\n}\n\nexport default mapCacheDelete;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_mapCacheDelete.js","import getMapData from './_getMapData';\n\n/**\n * Gets the map value for `key`.\n *\n * @private\n * @name get\n * @memberOf MapCache\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\nfunction mapCacheGet(key) {\n  return getMapData(this, key).get(key);\n}\n\nexport default mapCacheGet;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_mapCacheGet.js","import getMapData from './_getMapData';\n\n/**\n * Checks if a map value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf MapCache\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\nfunction mapCacheHas(key) {\n  return getMapData(this, key).has(key);\n}\n\nexport default mapCacheHas;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_mapCacheHas.js","import getMapData from './_getMapData';\n\n/**\n * Sets the map `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf MapCache\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the map cache instance.\n */\nfunction mapCacheSet(key, value) {\n  getMapData(this, key).set(key, value);\n  return this;\n}\n\nexport default mapCacheSet;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_mapCacheSet.js","import baseGet from './_baseGet';\nimport baseSlice from './_baseSlice';\n\n/**\n * Gets the parent value at `path` of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array} path The path to get the parent value of.\n * @returns {*} Returns the parent value.\n */\nfunction parent(object, path) {\n  return path.length == 1 ? object : baseGet(object, baseSlice(path, 0, -1));\n}\n\nexport default parent;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_parent.js","/** Used to stand-in for `undefined` hash values. */\nvar HASH_UNDEFINED = '__lodash_hash_undefined__';\n\n/**\n * Adds `value` to the array cache.\n *\n * @private\n * @name add\n * @memberOf SetCache\n * @alias push\n * @param {*} value The value to cache.\n * @returns {Object} Returns the cache instance.\n */\nfunction setCacheAdd(value) {\n  this.__data__.set(value, HASH_UNDEFINED);\n  return this;\n}\n\nexport default setCacheAdd;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_setCacheAdd.js","/**\n * Checks if `value` is in the array cache.\n *\n * @private\n * @name has\n * @memberOf SetCache\n * @param {*} value The value to search for.\n * @returns {number} Returns `true` if `value` is found, else `false`.\n */\nfunction setCacheHas(value) {\n  return this.__data__.has(value);\n}\n\nexport default setCacheHas;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_setCacheHas.js","/**\n * Converts `set` to its value-value pairs.\n *\n * @private\n * @param {Object} set The set to convert.\n * @returns {Array} Returns the value-value pairs.\n */\nfunction setToPairs(set) {\n  var index = -1,\n      result = Array(set.size);\n\n  set.forEach(function(value) {\n    result[++index] = [value, value];\n  });\n  return result;\n}\n\nexport default setToPairs;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_setToPairs.js","import ListCache from './_ListCache';\n\n/**\n * Removes all key-value entries from the stack.\n *\n * @private\n * @name clear\n * @memberOf Stack\n */\nfunction stackClear() {\n  this.__data__ = new ListCache;\n}\n\nexport default stackClear;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_stackClear.js","/**\n * Removes `key` and its value from the stack.\n *\n * @private\n * @name delete\n * @memberOf Stack\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\nfunction stackDelete(key) {\n  return this.__data__['delete'](key);\n}\n\nexport default stackDelete;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_stackDelete.js","/**\n * Gets the stack value for `key`.\n *\n * @private\n * @name get\n * @memberOf Stack\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\nfunction stackGet(key) {\n  return this.__data__.get(key);\n}\n\nexport default stackGet;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_stackGet.js","/**\n * Checks if a stack value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf Stack\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\nfunction stackHas(key) {\n  return this.__data__.has(key);\n}\n\nexport default stackHas;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_stackHas.js","import ListCache from './_ListCache';\nimport MapCache from './_MapCache';\n\n/** Used as the size to enable large array optimizations. */\nvar LARGE_ARRAY_SIZE = 200;\n\n/**\n * Sets the stack `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf Stack\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the stack cache instance.\n */\nfunction stackSet(key, value) {\n  var cache = this.__data__;\n  if (cache instanceof ListCache && cache.__data__.length == LARGE_ARRAY_SIZE) {\n    cache = this.__data__ = new MapCache(cache.__data__);\n  }\n  cache.set(key, value);\n  return this;\n}\n\nexport default stackSet;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_stackSet.js","import memoize from './memoize';\nimport toString from './toString';\n\n/** Used to match property names within property paths. */\nvar rePropName = /[^.[\\]]+|\\[(?:(-?\\d+(?:\\.\\d+)?)|([\"'])((?:(?!\\2)[^\\\\]|\\\\.)*?)\\2)\\]/g;\n\n/** Used to match backslashes in property paths. */\nvar reEscapeChar = /\\\\(\\\\)?/g;\n\n/**\n * Converts `string` to a property path array.\n *\n * @private\n * @param {string} string The string to convert.\n * @returns {Array} Returns the property path array.\n */\nvar stringToPath = memoize(function(string) {\n  var result = [];\n  toString(string).replace(rePropName, function(match, number, quote, string) {\n    result.push(quote ? string.replace(reEscapeChar, '$1') : (number || match));\n  });\n  return result;\n});\n\nexport default stringToPath;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/_stringToPath.js","import chunk from './chunk';\nimport compact from './compact';\nimport concat from './concat';\nimport difference from './difference';\nimport differenceBy from './differenceBy';\nimport differenceWith from './differenceWith';\nimport drop from './drop';\nimport dropRight from './dropRight';\nimport dropRightWhile from './dropRightWhile';\nimport dropWhile from './dropWhile';\nimport fill from './fill';\nimport findIndex from './findIndex';\nimport findLastIndex from './findLastIndex';\nimport first from './first';\nimport flatten from './flatten';\nimport flattenDeep from './flattenDeep';\nimport flattenDepth from './flattenDepth';\nimport fromPairs from './fromPairs';\nimport head from './head';\nimport indexOf from './indexOf';\nimport initial from './initial';\nimport intersection from './intersection';\nimport intersectionBy from './intersectionBy';\nimport intersectionWith from './intersectionWith';\nimport join from './join';\nimport last from './last';\nimport lastIndexOf from './lastIndexOf';\nimport nth from './nth';\nimport pull from './pull';\nimport pullAll from './pullAll';\nimport pullAllBy from './pullAllBy';\nimport pullAllWith from './pullAllWith';\nimport pullAt from './pullAt';\nimport remove from './remove';\nimport reverse from './reverse';\nimport slice from './slice';\nimport sortedIndex from './sortedIndex';\nimport sortedIndexBy from './sortedIndexBy';\nimport sortedIndexOf from './sortedIndexOf';\nimport sortedLastIndex from './sortedLastIndex';\nimport sortedLastIndexBy from './sortedLastIndexBy';\nimport sortedLastIndexOf from './sortedLastIndexOf';\nimport sortedUniq from './sortedUniq';\nimport sortedUniqBy from './sortedUniqBy';\nimport tail from './tail';\nimport take from './take';\nimport takeRight from './takeRight';\nimport takeRightWhile from './takeRightWhile';\nimport takeWhile from './takeWhile';\nimport union from './union';\nimport unionBy from './unionBy';\nimport unionWith from './unionWith';\nimport uniq from './uniq';\nimport uniqBy from './uniqBy';\nimport uniqWith from './uniqWith';\nimport unzip from './unzip';\nimport unzipWith from './unzipWith';\nimport without from './without';\nimport xor from './xor';\nimport xorBy from './xorBy';\nimport xorWith from './xorWith';\nimport zip from './zip';\nimport zipObject from './zipObject';\nimport zipObjectDeep from './zipObjectDeep';\nimport zipWith from './zipWith';\n\nexport default {\n  chunk, compact, concat, difference, differenceBy,\n  differenceWith, drop, dropRight, dropRightWhile, dropWhile,\n  fill, findIndex, findLastIndex, first, flatten,\n  flattenDeep, flattenDepth, fromPairs, head, indexOf,\n  initial, intersection, intersectionBy, intersectionWith, join,\n  last, lastIndexOf, nth, pull, pullAll,\n  pullAllBy, pullAllWith, pullAt, remove, reverse,\n  slice, sortedIndex, sortedIndexBy, sortedIndexOf, sortedLastIndex,\n  sortedLastIndexBy, sortedLastIndexOf, sortedUniq, sortedUniqBy, tail,\n  take, takeRight, takeRightWhile, takeWhile, union,\n  unionBy, unionWith, uniq, uniqBy, uniqWith,\n  unzip, unzipWith, without, xor, xorBy,\n  xorWith, zip, zipObject, zipObjectDeep, zipWith\n};\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/array.default.js","export { default as chunk } from './chunk';\nexport { default as compact } from './compact';\nexport { default as concat } from './concat';\nexport { default as difference } from './difference';\nexport { default as differenceBy } from './differenceBy';\nexport { default as differenceWith } from './differenceWith';\nexport { default as drop } from './drop';\nexport { default as dropRight } from './dropRight';\nexport { default as dropRightWhile } from './dropRightWhile';\nexport { default as dropWhile } from './dropWhile';\nexport { default as fill } from './fill';\nexport { default as findIndex } from './findIndex';\nexport { default as findLastIndex } from './findLastIndex';\nexport { default as first } from './first';\nexport { default as flatten } from './flatten';\nexport { default as flattenDeep } from './flattenDeep';\nexport { default as flattenDepth } from './flattenDepth';\nexport { default as fromPairs } from './fromPairs';\nexport { default as head } from './head';\nexport { default as indexOf } from './indexOf';\nexport { default as initial } from './initial';\nexport { default as intersection } from './intersection';\nexport { default as intersectionBy } from './intersectionBy';\nexport { default as intersectionWith } from './intersectionWith';\nexport { default as join } from './join';\nexport { default as last } from './last';\nexport { default as lastIndexOf } from './lastIndexOf';\nexport { default as nth } from './nth';\nexport { default as pull } from './pull';\nexport { default as pullAll } from './pullAll';\nexport { default as pullAllBy } from './pullAllBy';\nexport { default as pullAllWith } from './pullAllWith';\nexport { default as pullAt } from './pullAt';\nexport { default as remove } from './remove';\nexport { default as reverse } from './reverse';\nexport { default as slice } from './slice';\nexport { default as sortedIndex } from './sortedIndex';\nexport { default as sortedIndexBy } from './sortedIndexBy';\nexport { default as sortedIndexOf } from './sortedIndexOf';\nexport { default as sortedLastIndex } from './sortedLastIndex';\nexport { default as sortedLastIndexBy } from './sortedLastIndexBy';\nexport { default as sortedLastIndexOf } from './sortedLastIndexOf';\nexport { default as sortedUniq } from './sortedUniq';\nexport { default as sortedUniqBy } from './sortedUniqBy';\nexport { default as tail } from './tail';\nexport { default as take } from './take';\nexport { default as takeRight } from './takeRight';\nexport { default as takeRightWhile } from './takeRightWhile';\nexport { default as takeWhile } from './takeWhile';\nexport { default as union } from './union';\nexport { default as unionBy } from './unionBy';\nexport { default as unionWith } from './unionWith';\nexport { default as uniq } from './uniq';\nexport { default as uniqBy } from './uniqBy';\nexport { default as uniqWith } from './uniqWith';\nexport { default as unzip } from './unzip';\nexport { default as unzipWith } from './unzipWith';\nexport { default as without } from './without';\nexport { default as xor } from './xor';\nexport { default as xorBy } from './xorBy';\nexport { default as xorWith } from './xorWith';\nexport { default as zip } from './zip';\nexport { default as zipObject } from './zipObject';\nexport { default as zipObjectDeep } from './zipObjectDeep';\nexport { default as zipWith } from './zipWith';\nexport { default as default } from './array.default';\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/array.js","import assignValue from './_assignValue';\nimport copyObject from './_copyObject';\nimport createAssigner from './_createAssigner';\nimport isArrayLike from './isArrayLike';\nimport isPrototype from './_isPrototype';\nimport keysIn from './keysIn';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Built-in value references. */\nvar propertyIsEnumerable = objectProto.propertyIsEnumerable;\n\n/** Detect if properties shadowing those on `Object.prototype` are non-enumerable. */\nvar nonEnumShadows = !propertyIsEnumerable.call({ 'valueOf': 1 }, 'valueOf');\n\n/**\n * This method is like `_.assign` except that it iterates over own and\n * inherited source properties.\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @alias extend\n * @category Object\n * @param {Object} object The destination object.\n * @param {...Object} [sources] The source objects.\n * @returns {Object} Returns `object`.\n * @see _.assign\n * @example\n *\n * function Foo() {\n *   this.b = 2;\n * }\n *\n * function Bar() {\n *   this.d = 4;\n * }\n *\n * Foo.prototype.c = 3;\n * Bar.prototype.e = 5;\n *\n * _.assignIn({ 'a': 1 }, new Foo, new Bar);\n * // => { 'a': 1, 'b': 2, 'c': 3, 'd': 4, 'e': 5 }\n */\nvar assignIn = createAssigner(function(object, source) {\n  if (nonEnumShadows || isPrototype(source) || isArrayLike(source)) {\n    copyObject(source, keysIn(source), object);\n    return;\n  }\n  for (var key in source) {\n    assignValue(object, key, source[key]);\n  }\n});\n\nexport default assignIn;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/assignIn.js","import baseClone from './_baseClone';\n\n/**\n * This method is like `_.cloneWith` except that it recursively clones `value`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to recursively clone.\n * @param {Function} [customizer] The function to customize cloning.\n * @returns {*} Returns the deep cloned value.\n * @see _.cloneWith\n * @example\n *\n * function customizer(value) {\n *   if (_.isElement(value)) {\n *     return value.cloneNode(true);\n *   }\n * }\n *\n * var el = _.cloneDeepWith(document.body, customizer);\n *\n * console.log(el === document.body);\n * // => false\n * console.log(el.nodeName);\n * // => 'BODY'\n * console.log(el.childNodes.length);\n * // => 20\n */\nfunction cloneDeepWith(value, customizer) {\n  return baseClone(value, true, true, customizer);\n}\n\nexport default cloneDeepWith;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/cloneDeepWith.js","/**\n * Creates a function that returns `value`.\n *\n * @static\n * @memberOf _\n * @since 2.4.0\n * @category Util\n * @param {*} value The value to return from the new function.\n * @returns {Function} Returns the new constant function.\n * @example\n *\n * var object = { 'user': 'fred' };\n * var getter = _.constant(object);\n *\n * getter() === object;\n * // => true\n */\nfunction constant(value) {\n  return function() {\n    return value;\n  };\n}\n\nexport default constant;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/constant.js","import baseHasIn from './_baseHasIn';\nimport hasPath from './_hasPath';\n\n/**\n * Checks if `path` is a direct or inherited property of `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The object to query.\n * @param {Array|string} path The path to check.\n * @returns {boolean} Returns `true` if `path` exists, else `false`.\n * @example\n *\n * var object = _.create({ 'a': _.create({ 'b': 2 }) });\n *\n * _.hasIn(object, 'a');\n * // => true\n *\n * _.hasIn(object, 'a.b');\n * // => true\n *\n * _.hasIn(object, ['a', 'b']);\n * // => true\n *\n * _.hasIn(object, 'b');\n * // => false\n */\nfunction hasIn(object, path) {\n  return object != null && hasPath(object, path, baseHasIn);\n}\n\nexport default hasIn;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/hasIn.js","import constant from './constant';\nimport root from './_root';\n\n/** Used to determine if values are of the language type `Object`. */\nvar objectTypes = {\n  'function': true,\n  'object': true\n};\n\n/** Detect free variable `exports`. */\nvar freeExports = (objectTypes[typeof exports] && exports && !exports.nodeType)\n  ? exports\n  : undefined;\n\n/** Detect free variable `module`. */\nvar freeModule = (objectTypes[typeof module] && module && !module.nodeType)\n  ? module\n  : undefined;\n\n/** Detect the popular CommonJS extension `module.exports`. */\nvar moduleExports = (freeModule && freeModule.exports === freeExports)\n  ? freeExports\n  : undefined;\n\n/** Built-in value references. */\nvar Buffer = moduleExports ? root.Buffer : undefined;\n\n/**\n * Checks if `value` is a buffer.\n *\n * @static\n * @memberOf _\n * @since 4.3.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a buffer, else `false`.\n * @example\n *\n * _.isBuffer(new Buffer(2));\n * // => true\n *\n * _.isBuffer(new Uint8Array(2));\n * // => false\n */\nvar isBuffer = !Buffer ? constant(false) : function(value) {\n  return value instanceof Buffer;\n};\n\nexport default isBuffer;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/isBuffer.js","import isObjectLike from './isObjectLike';\nimport isPlainObject from './isPlainObject';\n\n/**\n * Checks if `value` is likely a DOM element.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a DOM element,\n *  else `false`.\n * @example\n *\n * _.isElement(document.body);\n * // => true\n *\n * _.isElement('<body>');\n * // => false\n */\nfunction isElement(value) {\n  return !!value && value.nodeType === 1 && isObjectLike(value) && !isPlainObject(value);\n}\n\nexport default isElement;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/isElement.js","import baseIsEqual from './_baseIsEqual';\n\n/**\n * Performs a deep comparison between two values to determine if they are\n * equivalent.\n *\n * **Note:** This method supports comparing arrays, array buffers, booleans,\n * date objects, error objects, maps, numbers, `Object` objects, regexes,\n * sets, strings, symbols, and typed arrays. `Object` objects are compared\n * by their own, not inherited, enumerable properties. Functions and DOM\n * nodes are **not** supported.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if the values are equivalent,\n *  else `false`.\n * @example\n *\n * var object = { 'user': 'fred' };\n * var other = { 'user': 'fred' };\n *\n * _.isEqual(object, other);\n * // => true\n *\n * object === other;\n * // => false\n */\nfunction isEqual(value, other) {\n  return baseIsEqual(value, other);\n}\n\nexport default isEqual;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/isEqual.js","import isLength from './isLength';\nimport isObjectLike from './isObjectLike';\n\n/** `Object#toString` result references. */\nvar argsTag = '[object Arguments]',\n    arrayTag = '[object Array]',\n    boolTag = '[object Boolean]',\n    dateTag = '[object Date]',\n    errorTag = '[object Error]',\n    funcTag = '[object Function]',\n    mapTag = '[object Map]',\n    numberTag = '[object Number]',\n    objectTag = '[object Object]',\n    regexpTag = '[object RegExp]',\n    setTag = '[object Set]',\n    stringTag = '[object String]',\n    weakMapTag = '[object WeakMap]';\n\nvar arrayBufferTag = '[object ArrayBuffer]',\n    dataViewTag = '[object DataView]',\n    float32Tag = '[object Float32Array]',\n    float64Tag = '[object Float64Array]',\n    int8Tag = '[object Int8Array]',\n    int16Tag = '[object Int16Array]',\n    int32Tag = '[object Int32Array]',\n    uint8Tag = '[object Uint8Array]',\n    uint8ClampedTag = '[object Uint8ClampedArray]',\n    uint16Tag = '[object Uint16Array]',\n    uint32Tag = '[object Uint32Array]';\n\n/** Used to identify `toStringTag` values of typed arrays. */\nvar typedArrayTags = {};\ntypedArrayTags[float32Tag] = typedArrayTags[float64Tag] =\ntypedArrayTags[int8Tag] = typedArrayTags[int16Tag] =\ntypedArrayTags[int32Tag] = typedArrayTags[uint8Tag] =\ntypedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] =\ntypedArrayTags[uint32Tag] = true;\ntypedArrayTags[argsTag] = typedArrayTags[arrayTag] =\ntypedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] =\ntypedArrayTags[dataViewTag] = typedArrayTags[dateTag] =\ntypedArrayTags[errorTag] = typedArrayTags[funcTag] =\ntypedArrayTags[mapTag] = typedArrayTags[numberTag] =\ntypedArrayTags[objectTag] = typedArrayTags[regexpTag] =\ntypedArrayTags[setTag] = typedArrayTags[stringTag] =\ntypedArrayTags[weakMapTag] = false;\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/**\n * Used to resolve the\n * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)\n * of values.\n */\nvar objectToString = objectProto.toString;\n\n/**\n * Checks if `value` is classified as a typed array.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is correctly classified,\n *  else `false`.\n * @example\n *\n * _.isTypedArray(new Uint8Array);\n * // => true\n *\n * _.isTypedArray([]);\n * // => false\n */\nfunction isTypedArray(value) {\n  return isObjectLike(value) &&\n    isLength(value.length) && !!typedArrayTags[objectToString.call(value)];\n}\n\nexport default isTypedArray;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/isTypedArray.js","import baseKeysIn from './_baseKeysIn';\nimport indexKeys from './_indexKeys';\nimport isIndex from './_isIndex';\nimport isPrototype from './_isPrototype';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/**\n * Creates an array of the own and inherited enumerable property names of `object`.\n *\n * **Note:** Non-object values are coerced to objects.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n * @example\n *\n * function Foo() {\n *   this.a = 1;\n *   this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.keysIn(new Foo);\n * // => ['a', 'b', 'c'] (iteration order is not guaranteed)\n */\nfunction keysIn(object) {\n  var index = -1,\n      isProto = isPrototype(object),\n      props = baseKeysIn(object),\n      propsLength = props.length,\n      indexes = indexKeys(object),\n      skipIndexes = !!indexes,\n      result = indexes || [],\n      length = result.length;\n\n  while (++index < propsLength) {\n    var key = props[index];\n    if (!(skipIndexes && (key == 'length' || isIndex(key, length))) &&\n        !(key == 'constructor' && (isProto || !hasOwnProperty.call(object, key)))) {\n      result.push(key);\n    }\n  }\n  return result;\n}\n\nexport default keysIn;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/keysIn.js","import MapCache from './_MapCache';\n\n/** Used as the `TypeError` message for \"Functions\" methods. */\nvar FUNC_ERROR_TEXT = 'Expected a function';\n\n/**\n * Creates a function that memoizes the result of `func`. If `resolver` is\n * provided, it determines the cache key for storing the result based on the\n * arguments provided to the memoized function. By default, the first argument\n * provided to the memoized function is used as the map cache key. The `func`\n * is invoked with the `this` binding of the memoized function.\n *\n * **Note:** The cache is exposed as the `cache` property on the memoized\n * function. Its creation may be customized by replacing the `_.memoize.Cache`\n * constructor with one whose instances implement the\n * [`Map`](http://ecma-international.org/ecma-262/6.0/#sec-properties-of-the-map-prototype-object)\n * method interface of `delete`, `get`, `has`, and `set`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to have its output memoized.\n * @param {Function} [resolver] The function to resolve the cache key.\n * @returns {Function} Returns the new memoized function.\n * @example\n *\n * var object = { 'a': 1, 'b': 2 };\n * var other = { 'c': 3, 'd': 4 };\n *\n * var values = _.memoize(_.values);\n * values(object);\n * // => [1, 2]\n *\n * values(other);\n * // => [3, 4]\n *\n * object.a = 2;\n * values(object);\n * // => [1, 2]\n *\n * // Modify the result cache.\n * values.cache.set(object, ['a', 'b']);\n * values(object);\n * // => ['a', 'b']\n *\n * // Replace `_.memoize.Cache`.\n * _.memoize.Cache = WeakMap;\n */\nfunction memoize(func, resolver) {\n  if (typeof func != 'function' || (resolver && typeof resolver != 'function')) {\n    throw new TypeError(FUNC_ERROR_TEXT);\n  }\n  var memoized = function() {\n    var args = arguments,\n        key = resolver ? resolver.apply(this, args) : args[0],\n        cache = memoized.cache;\n\n    if (cache.has(key)) {\n      return cache.get(key);\n    }\n    var result = func.apply(this, args);\n    memoized.cache = cache.set(key, result);\n    return result;\n  };\n  memoized.cache = new (memoize.Cache || MapCache);\n  return memoized;\n}\n\n// Assign cache to `_.memoize`.\nmemoize.Cache = MapCache;\n\nexport default memoize;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/memoize.js","/**\n * A no-operation function that returns `undefined` regardless of the\n * arguments it receives.\n *\n * @static\n * @memberOf _\n * @since 2.3.0\n * @category Util\n * @example\n *\n * var object = { 'user': 'fred' };\n *\n * _.noop(object) === undefined;\n * // => true\n */\nfunction noop() {\n  // No operation performed.\n}\n\nexport default noop;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/noop.js","/**\n * Gets the timestamp of the number of milliseconds that have elapsed since\n * the Unix epoch (1 January 1970 00:00:00 UTC).\n *\n * @static\n * @memberOf _\n * @since 2.4.0\n * @type {Function}\n * @category Date\n * @returns {number} Returns the timestamp.\n * @example\n *\n * _.defer(function(stamp) {\n *   console.log(_.now() - stamp);\n * }, _.now());\n * // => Logs the number of milliseconds it took for the deferred function to be invoked.\n */\nvar now = Date.now;\n\nexport default now;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/now.js","import baseProperty from './_baseProperty';\nimport basePropertyDeep from './_basePropertyDeep';\nimport isKey from './_isKey';\nimport toKey from './_toKey';\n\n/**\n * Creates a function that returns the value at `path` of a given object.\n *\n * @static\n * @memberOf _\n * @since 2.4.0\n * @category Util\n * @param {Array|string} path The path of the property to get.\n * @returns {Function} Returns the new accessor function.\n * @example\n *\n * var objects = [\n *   { 'a': { 'b': 2 } },\n *   { 'a': { 'b': 1 } }\n * ];\n *\n * _.map(objects, _.property('a.b'));\n * // => [2, 1]\n *\n * _.map(_.sortBy(objects, _.property(['a', 'b'])), 'a.b');\n * // => [1, 2]\n */\nfunction property(path) {\n  return isKey(path) ? baseProperty(toKey(path)) : basePropertyDeep(path);\n}\n\nexport default property;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/property.js","import debounce from './debounce';\nimport isObject from './isObject';\n\n/** Used as the `TypeError` message for \"Functions\" methods. */\nvar FUNC_ERROR_TEXT = 'Expected a function';\n\n/**\n * Creates a throttled function that only invokes `func` at most once per\n * every `wait` milliseconds. The throttled function comes with a `cancel`\n * method to cancel delayed `func` invocations and a `flush` method to\n * immediately invoke them. Provide an options object to indicate whether\n * `func` should be invoked on the leading and/or trailing edge of the `wait`\n * timeout. The `func` is invoked with the last arguments provided to the\n * throttled function. Subsequent calls to the throttled function return the\n * result of the last `func` invocation.\n *\n * **Note:** If `leading` and `trailing` options are `true`, `func` is\n * invoked on the trailing edge of the timeout only if the throttled function\n * is invoked more than once during the `wait` timeout.\n *\n * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)\n * for details over the differences between `_.throttle` and `_.debounce`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to throttle.\n * @param {number} [wait=0] The number of milliseconds to throttle invocations to.\n * @param {Object} [options={}] The options object.\n * @param {boolean} [options.leading=true]\n *  Specify invoking on the leading edge of the timeout.\n * @param {boolean} [options.trailing=true]\n *  Specify invoking on the trailing edge of the timeout.\n * @returns {Function} Returns the new throttled function.\n * @example\n *\n * // Avoid excessively updating the position while scrolling.\n * jQuery(window).on('scroll', _.throttle(updatePosition, 100));\n *\n * // Invoke `renewToken` when the click event is fired, but not more than once every 5 minutes.\n * var throttled = _.throttle(renewToken, 300000, { 'trailing': false });\n * jQuery(element).on('click', throttled);\n *\n * // Cancel the trailing throttled invocation.\n * jQuery(window).on('popstate', throttled.cancel);\n */\nfunction throttle(func, wait, options) {\n  var leading = true,\n      trailing = true;\n\n  if (typeof func != 'function') {\n    throw new TypeError(FUNC_ERROR_TEXT);\n  }\n  if (isObject(options)) {\n    leading = 'leading' in options ? !!options.leading : leading;\n    trailing = 'trailing' in options ? !!options.trailing : trailing;\n  }\n  return debounce(func, wait, {\n    'leading': leading,\n    'maxWait': wait,\n    'trailing': trailing\n  });\n}\n\nexport default throttle;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/throttle.js","import toNumber from './toNumber';\n\n/** Used as references for various `Number` constants. */\nvar INFINITY = 1 / 0,\n    MAX_INTEGER = 1.7976931348623157e+308;\n\n/**\n * Converts `value` to a finite number.\n *\n * @static\n * @memberOf _\n * @since 4.12.0\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {number} Returns the converted number.\n * @example\n *\n * _.toFinite(3.2);\n * // => 3.2\n *\n * _.toFinite(Number.MIN_VALUE);\n * // => 5e-324\n *\n * _.toFinite(Infinity);\n * // => 1.7976931348623157e+308\n *\n * _.toFinite('3.2');\n * // => 3.2\n */\nfunction toFinite(value) {\n  if (!value) {\n    return value === 0 ? value : 0;\n  }\n  value = toNumber(value);\n  if (value === INFINITY || value === -INFINITY) {\n    var sign = (value < 0 ? -1 : 1);\n    return sign * MAX_INTEGER;\n  }\n  return value === value ? value : 0;\n}\n\nexport default toFinite;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/toFinite.js","import baseClamp from './_baseClamp';\nimport toInteger from './toInteger';\n\n/** Used as references for the maximum length and index of an array. */\nvar MAX_ARRAY_LENGTH = 4294967295;\n\n/**\n * Converts `value` to an integer suitable for use as the length of an\n * array-like object.\n *\n * **Note:** This method is based on\n * [`ToLength`](http://ecma-international.org/ecma-262/6.0/#sec-tolength).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {number} Returns the converted integer.\n * @example\n *\n * _.toLength(3.2);\n * // => 3\n *\n * _.toLength(Number.MIN_VALUE);\n * // => 0\n *\n * _.toLength(Infinity);\n * // => 4294967295\n *\n * _.toLength('3.2');\n * // => 3\n */\nfunction toLength(value) {\n  return value ? baseClamp(toInteger(value), 0, MAX_ARRAY_LENGTH) : 0;\n}\n\nexport default toLength;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/toLength.js","import createToPairs from './_createToPairs';\nimport keys from './keys';\n\n/**\n * Creates an array of own enumerable string keyed-value pairs for `object`\n * which can be consumed by `_.fromPairs`. If `object` is a map or set, its\n * entries are returned.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @alias entries\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the key-value pairs.\n * @example\n *\n * function Foo() {\n *   this.a = 1;\n *   this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.toPairs(new Foo);\n * // => [['a', 1], ['b', 2]] (iteration order is not guaranteed)\n */\nvar toPairs = createToPairs(keys);\n\nexport default toPairs;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/toPairs.js","import baseToString from './_baseToString';\n\n/**\n * Converts `value` to a string. An empty string is returned for `null`\n * and `undefined` values. The sign of `-0` is preserved.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to process.\n * @returns {string} Returns the string.\n * @example\n *\n * _.toString(null);\n * // => ''\n *\n * _.toString(-0);\n * // => '-0'\n *\n * _.toString([1, 2, 3]);\n * // => '1,2,3'\n */\nfunction toString(value) {\n  return value == null ? '' : baseToString(value);\n}\n\nexport default toString;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/lib/lodash/toString.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/locale\n */\n\nimport { translate } from './translation-service';\n\n/**\n * Represents the localization services.\n */\nexport default class Locale {\n\t/**\n\t * Creates a new instance of the Locale class.\n\t *\n\t * @param {String} [lang='en'] The language code in [ISO 639-1](https://en.wikipedia.org/wiki/ISO_639-1) format.\n\t */\n\tconstructor( lang ) {\n\t\t/**\n\t\t * The language code in [ISO 639-1](https://en.wikipedia.org/wiki/ISO_639-1) format.\n\t\t *\n\t\t * @readonly\n\t\t * @member {String}\n\t\t */\n\t\tthis.lang = lang || 'en';\n\n\t\t/**\n\t\t * Translates the given string to the {@link #lang}. This method is also availble in {@link module:core/editor/editor~Editor#t} and\n\t\t * {@link module:ui/view~View#t}.\n\t\t *\n\t\t * The strings may contain placeholders (`%<index>`) for values which are passed as the second argument.\n\t\t * `<index>` is the index in the `values` array.\n\t\t *\n\t\t *\t\teditor.t( 'Created file \"%0\" in %1ms.', [ fileName, timeTaken ] );\n\t\t *\n\t\t * This method's context is statically bound to Locale instance,\n\t\t * so it can be called as a function:\n\t\t *\n\t\t *\t\tconst t = this.t;\n\t\t *\t\tt( 'Label' );\n\t\t *\n\t\t * @method #t\n\t\t * @param {String} str The string to translate.\n\t\t * @param {String[]} values Values that should be used to interpolate the string.\n\t\t */\n\t\tthis.t = ( ...args ) => this._t( ...args );\n\t}\n\n\t/**\n\t * Base for the {@link #t} method.\n\t *\n\t * @private\n\t */\n\t_t( str, values ) {\n\t\tlet translatedString = translate( this.lang, str );\n\n\t\tif ( values ) {\n\t\t\ttranslatedString = translatedString.replace( /\\%(\\d+)/g, ( match, index ) => {\n\t\t\t\treturn ( index < values.length ) ? values[ index ] : match;\n\t\t\t} );\n\t\t}\n\n\t\treturn translatedString;\n\t}\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/locale.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/mapsequal\n */\n\n/**\n * Checks whether given {Map}s are equal, that is has same size and same key-value pairs.\n *\n * @returns {Boolean} `true` if given maps are equal, `false` otherwise.\n */\nexport default function mapsEqual( mapA, mapB ) {\n\tif ( mapA.size != mapB.size ) {\n\t\treturn false;\n\t}\n\n\tfor ( let attr of mapA.entries() ) {\n\t\tlet valA = JSON.stringify( attr[ 1 ] );\n\t\tlet valB = JSON.stringify( mapB.get( attr[ 0 ] ) );\n\n\t\tif ( valA !== valB ) {\n\t\t\treturn false;\n\t\t}\n\t}\n\n\treturn true;\n}\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/mapsequal.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/priorities\n */\n\n/**\n * String representing a priority value.\n *\n * @typedef {'highest'|'high'|'normal'|'low'|'lowest'} module:utils/priorities~PriorityString\n */\n\n/**\n * Provides group of constants to use instead of hardcoding numeric priority values.\n *\n * @namespace\n */\nconst priorities = {\n\t/**\n\t * Converts a string with priority name to it's numeric value. If `Number` is given, it just returns it.\n\t *\n\t * @static\n\t * @param {module:utils/priorities~PriorityString|Number} priority Priority to convert.\n\t * @returns {Number} Converted priority.\n\t */\n\tget( priority ) {\n\t\tif ( typeof priority != 'number' ) {\n\t\t\treturn this[ priority ] || this.normal;\n\t\t} else {\n\t\t\treturn priority;\n\t\t}\n\t},\n\n\thighest: 100000,\n\thigh: 1000,\n\tnormal: 0,\n\tlow: -1000,\n\tlowest: -100000\n};\n\nexport default priorities;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/priorities.js","/**\n * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/spy\n */\n\n/**\n * Creates a spy function (ala Sinon.js) that can be used to inspect call to it.\n *\n * The following are the present features:\n *\n * * spy.called: property set to `true` if the function has been called at least once.\n *\n * @returns {Function} The spy function.\n */\nfunction spy() {\n\treturn function spy() {\n\t\tspy.called = true;\n\t};\n}\n\nexport default spy;\n\n\n\n// WEBPACK FOOTER //\n// ../ckeditor5/packages/ckeditor5-utils/src/spy.js","/**\n * @license Copyright (c) 2003-2016, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module utils/translation-service\n */\n\nlet dictionaries = {};\n\n/**\n * Adds package translations to existing ones.\n * These translations will later be available for {@link module:utils/translations-service~translate translate}.\n *\n *\t\tadd( 'pl', {\n *\t\t\t'OK': 'OK',\n *\t\t\t'Cancel [context: reject]': 'Anuluj'\n *\t\t} );\n *\n * @param {String} lang Target language.\n * @param {Object.<String, String>} translations Translations which will be added to the dictionary.\n */\nexport function add( lang, translations ) {\n\tdictionaries[ lang ] = dictionaries[ lang ] || {};\n\n\tObject.assign( dictionaries[ lang ], translations );\n}\n\n/**\n * Translates string if the translation of the string was previously {@link module:utils/translations-service~add added}\n * to the dictionary. This happens in a multi-language mode were translation modules are created by the bundler.\n *\n * When no translation is defined in the dictionary or the dictionary doesn't exist this function returns\n * the original string without the `'[context: ]'` (happens in development and single-language modes).\n *\n * In a single-language mode (when values passed to `t()` were replaced with target languange strings) the dictionary\n * is left empty, so this function will return the original strings always.\n *\n *\t\ttranslate( 'pl', 'Cancel [context: reject]' );\n *\n * @param {String} lang Target language.\n * @param {String} translationKey String which is going to be translated.\n * @returns {String} Translated sentence.\n */\nexport function translate( lang, translationKey ) {\n\tif ( !hasTranslation( lang, translationKey ) ) {\n\t\treturn translationKey.replace( / \\[context: [^\\]]+\\]$/, '' ) ;\n\t}\n\n\treturn dictionaries[ lang ][ translationKey ];\n}\n\n// Checks whether the 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.ck-toolbar.ck-toolbar_sticky{box-shadow:0 0 5px rgba(0,0,0,.2);border:1px solid #bfbfbf;border-width:0 0 1px;background:#f7f7f7}.ck-editor{position:relative}.ck-editor.ck-rounded-corners,.ck-rounded-corners .ck-editor{border-radius:2px}.ck-editor .ck-editor__top .ck-toolbar{border-radius:0;border-top:0;border-left:0;border-right:0}.ck-editor .ck-editor__top .ck-toolbar .ck-button{border-width:0}.ck-editor .ck-editor__top .ck-toolbar .ck-button.ck-disabled,.ck-editor .ck-editor__top .ck-toolbar .ck-button:not(:hover):not(:focus):not(.ck-on){background:#f7f7f7}.ck-editor .ck-editor__top .ck-toolbar .ck-button.ck-on{background:#dedede;border-color:#a1a1a1}.ck-editor .ck-editor__top .ck-toolbar .ck-button.ck-on:not(.ck-disabled):focus,.ck-editor .ck-editor__top .ck-toolbar .ck-button.ck-on:not(.ck-disabled):hover{background:#c6c6c6;border-color:#888}.ck-editor .ck-editor__top .ck-toolbar .ck-button.ck-on:not(.ck-disabled):active{background:#b9b9b9;border-color:#7c7c7c;box-shadow:inset 0 2px 2px #a1a1a1}.ck-editor .ck-editor__top .ck-toolbar .ck-dropdown__button{border-width:1px}.ck-editor .ck-editor__main,.ck-editor .ck-editor__top .ck-toolbar .ck-dropdown__button:not(:hover):not(:focus):not(.ck-on){background:#fff}.ck-editor .ck-editor__bottom{border-bottom:0;border-left:0;border-right:0;padding:.8em}.ck-editor .ck-editor__editable.ck-focused{outline:1px solid #6ab5f9;box-shadow:inset 2px 2px 3px #e6e6e6}.ck-editor .ck-editor__editable_inline{overflow:auto;padding:0 .8em}.ck-editor,.ck-editor-bottom{background:#f7f7f7;border:1px solid #b9b9b9}\", \"\"]);\n\n// exports\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/css-loader?{\"minimize\":true}!./~/sass-loader!../ckeditor5/packages/ckeditor5-editor-classic/theme/theme.scss\n// module id = 505\n// module chunks = 0","exports = module.exports = require(\"./../../../../../ckeditor5.github.io/node_modules/css-loader/lib/css-base.js\")();\n// imports\n\n\n// module\nexports.push([module.id, \".ck-hidden{display:none}.ck-disabled{opacity:.5}.ck-widget.image figcaption{background-color:#f7f7f7;padding:10px}.ck-widget.image figcaption:focus{outline:none;box-shadow:none}.ck-widget.image figcaption.focused{outline:1px solid #6ab5f9;box-shadow:inset 2px 2px 3px #e6e6e6;background-color:#fff}\", \"\"]);\n\n// exports\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/css-loader?{\"minimize\":true}!./~/sass-loader!../ckeditor5/packages/ckeditor5-image/theme/imagecaption/theme.scss\n// module id = 506\n// module chunks = 0","exports = module.exports = require(\"./../../../../../ckeditor5.github.io/node_modules/css-loader/lib/css-base.js\")();\n// imports\n\n\n// module\nexports.push([module.id, \".cke-text-alternative-form{padding:1.2em;overflow:hidden}.cke-text-alternative-form .ck-label{margin-bottom:.4em}.cke-text-alternative-form__actions{clear:both;padding-top:1.2em}.cke-text-alternative-form__actions .ck-button{float:right}.cke-text-alternative-form__actions .ck-button+.ck-button{margin-right:.64em}.cke-text-alternative-form__actions .ck-button+.ck-button+.ck-button{float:left}\", \"\"]);\n\n// exports\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/css-loader?{\"minimize\":true}!./~/sass-loader!../ckeditor5/packages/ckeditor5-image/theme/imagetextalternative/theme.scss\n// module id = 507\n// module chunks = 0","exports = module.exports = require(\"./../../../../ckeditor5.github.io/node_modules/css-loader/lib/css-base.js\")();\n// imports\n\n\n// module\nexports.push([module.id, \".ck-widget{margin:10px 0;padding:0}.ck-widget.ck-widget_selected,.ck-widget.ck-widget_selected:hover{outline:2px solid #ace}.ck-editor__editable.ck-blurred .ck-widget.ck-widget_selected{outline:2px solid #ddd}.ck-widget:hover{outline:2px solid #ff0}.image{text-align:center;clear:both}.image.image-style-side{float:right;margin-left:.8em;max-width:50%}.image>img{display:block;margin:0 auto}\", \"\"]);\n\n// exports\n\n\n\n//////////////////\n// WEBPACK 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xmlns=\\\"http://www.w3.org/2000/svg\\\" xmlns:xlink=\\\"http://www.w3.org/1999/xlink\\\" xmlns:sketch=\\\"http://www.bohemiancoding.com/sketch/ns\\\">\\n    <!-- Generator: Sketch 3.5.2 (25235) - http://www.bohemiancoding.com/sketch -->\\n    <title>italic</title>\\n    <desc>Created with Sketch.</desc>\\n    <defs></defs>\\n    <g id=\\\"Page-1\\\" stroke=\\\"none\\\" stroke-width=\\\"1\\\" fill=\\\"none\\\" fill-rule=\\\"evenodd\\\" sketch:type=\\\"MSPage\\\">\\n        <g id=\\\"italic\\\" sketch:type=\\\"MSArtboardGroup\\\" fill=\\\"#454545\\\">\\n            <g id=\\\"icon:italic\\\" sketch:type=\\\"MSLayerGroup\\\" transform=\\\"translate(5.000000, 3.000000)\\\">\\n                <path d=\\\"M8.82538319,0.9140625 L8.6985333,1.47220203 C8.52376146,1.47783984 8.29543393,1.50320956 8.01354387,1.54831197 C7.73165381,1.59341438 7.52305829,1.63569726 7.38775106,1.67516187 C7.1509634,1.74845328 6.9818319,1.86120762 6.88035148,2.01342825 C6.77887106,2.16564888 6.70558074,2.33196153 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id = 520\n// module chunks = 0","// style-loader: Adds some css to the DOM by adding a <style> tag\n\n// load the styles\nvar content = require(\"!!./../../../../ckeditor5.github.io/node_modules/css-loader/index.js??ref--2-1!./../../../../ckeditor5.github.io/node_modules/sass-loader/index.js!./theme.scss\");\nif(typeof content === 'string') content = [[module.id, content, '']];\n// add the styles to the DOM\nvar update = require(\"!./../../../../ckeditor5.github.io/node_modules/style-loader/addStyles.js\")(content, {});\nif(content.locals) module.exports = content.locals;\n// Hot Module Replacement\nif(module.hot) {\n\t// When the styles change, update the <style> tags\n\tif(!content.locals) {\n\t\tmodule.hot.accept(\"!!./../../../../ckeditor5.github.io/node_modules/css-loader/index.js??ref--2-1!./../../../../ckeditor5.github.io/node_modules/sass-loader/index.js!./theme.scss\", function() {\n\t\t\tvar newContent = require(\"!!./../../../../ckeditor5.github.io/node_modules/css-loader/index.js??ref--2-1!./../../../../ckeditor5.github.io/node_modules/sass-loader/index.js!./theme.scss\");\n\t\t\tif(typeof newContent === 'string') newContent = [[module.id, newContent, '']];\n\t\t\tupdate(newContent);\n\t\t});\n\t}\n\t// When the module is disposed, remove the <style> tags\n\tmodule.hot.dispose(function() { update(); });\n}\n\n\n//////////////////\n// WEBPACK FOOTER\n// ../ckeditor5/packages/ckeditor5-editor-classic/theme/theme.scss\n// module id = 521\n// module chunks = 0","// style-loader: Adds some css to the DOM by adding a <style> tag\n\n// load the styles\nvar content = require(\"!!./../../../../../ckeditor5.github.io/node_modules/css-loader/index.js??ref--2-1!./../../../../../ckeditor5.github.io/node_modules/sass-loader/index.js!./theme.scss\");\nif(typeof content === 'string') content = [[module.id, content, '']];\n// add the styles to the DOM\nvar update = 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= require(\"!./../../../../ckeditor5.github.io/node_modules/style-loader/addStyles.js\")(content, {});\nif(content.locals) module.exports = content.locals;\n// Hot Module Replacement\nif(module.hot) {\n\t// When the styles change, update the <style> tags\n\tif(!content.locals) {\n\t\tmodule.hot.accept(\"!!./../../../../ckeditor5.github.io/node_modules/css-loader/index.js??ref--2-1!./../../../../ckeditor5.github.io/node_modules/sass-loader/index.js!./theme.scss\", function() {\n\t\t\tvar newContent = require(\"!!./../../../../ckeditor5.github.io/node_modules/css-loader/index.js??ref--2-1!./../../../../ckeditor5.github.io/node_modules/sass-loader/index.js!./theme.scss\");\n\t\t\tif(typeof newContent === 'string') newContent = [[module.id, newContent, '']];\n\t\t\tupdate(newContent);\n\t\t});\n\t}\n\t// When the module is disposed, remove the <style> tags\n\tmodule.hot.dispose(function() { update(); });\n}\n\n\n//////////////////\n// WEBPACK FOOTER\n// ../ckeditor5/packages/ckeditor5-image/theme/theme.scss\n// module id = 524\n// module chunks = 0","// style-loader: Adds some css to the DOM by adding a <style> tag\n\n// load the styles\nvar content = require(\"!!./../../../../ckeditor5.github.io/node_modules/css-loader/index.js??ref--2-1!./../../../../ckeditor5.github.io/node_modules/sass-loader/index.js!./theme.scss\");\nif(typeof content === 'string') content = [[module.id, content, '']];\n// add the styles to the DOM\nvar update = require(\"!./../../../../ckeditor5.github.io/node_modules/style-loader/addStyles.js\")(content, {});\nif(content.locals) module.exports = content.locals;\n// Hot Module Replacement\nif(module.hot) {\n\t// When the styles change, update the <style> tags\n\tif(!content.locals) {\n\t\tmodule.hot.accept(\"!!./../../../../ckeditor5.github.io/node_modules/css-loader/index.js??ref--2-1!./../../../../ckeditor5.github.io/node_modules/sass-loader/index.js!./theme.scss\", function() {\n\t\t\tvar newContent = require(\"!!./../../../../ckeditor5.github.io/node_modules/css-loader/index.js??ref--2-1!./../../../../ckeditor5.github.io/node_modules/sass-loader/index.js!./theme.scss\");\n\t\t\tif(typeof newContent === 'string') newContent = [[module.id, newContent, '']];\n\t\t\tupdate(newContent);\n\t\t});\n\t}\n\t// When the module is disposed, remove the <style> tags\n\tmodule.hot.dispose(function() { update(); });\n}\n\n\n//////////////////\n// WEBPACK FOOTER\n// ../ckeditor5/packages/ckeditor5-link/theme/theme.scss\n// module id = 525\n// module chunks = 0"],"sourceRoot":""}
\ No newline at end of file
diff --git a/js/app.js b/js/app.js
index f7eb427ea4c..e0aa3b95b1a 100644
--- a/js/app.js
+++ b/js/app.js
@@ -12,7 +12,18 @@ try {
 			Autoformat,
 			ArticlePreset
 		],
-		toolbar: [ 'headings', 'bold', 'italic', 'link', 'unlink', 'bulletedList', 'numberedList', 'undo', 'redo' ]
+		toolbar: [
+			'headings',
+			'bold',
+			'italic',
+			'link',
+			'unlink',
+			'bulletedList',
+			'numberedList',
+			'blockQuote',
+			'undo',
+			'redo'
+		]
 	} ).then( ( editor ) => {
 		window.editor = editor;
 	} )
diff --git a/js/styles.css b/js/styles.css
new file mode 100644
index 00000000000..d2cb98d4d4f
--- /dev/null
+++ b/js/styles.css
@@ -0,0 +1,1102 @@
+/**
+ * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.
+ * For licensing, see LICENSE.md.
+ */
+@charset "UTF-8";
+/**
+ * Makes element unselectable.
+ */
+/**
+ * A class which hides an element in DOM.
+ */
+.ck-hidden {
+  display: none; }
+
+/**
+ * Wraps (S)CSS into .ck-editor namespace.
+ */
+/**
+ * Resets an element, ignoring its children.
+ */
+.ck-reset, .ck-reset_all, .ck-reset_all *, .ck-reset_all a, .ck-reset_all textarea {
+  box-sizing: border-box;
+  width: auto;
+  height: auto;
+  position: static; }
+
+/**
+ * Resets an element AND its children.
+ */
+/**
+ * Default width/height of an icon.
+ */
+svg.ck-icon {
+  min-width: 20px;
+  min-height: 20px;
+  font-size: 1em;
+  vertical-align: middle;
+  color: inherit;
+  cursor: inherit; }
+  svg.ck-icon * {
+    cursor: inherit;
+    color: inherit;
+    fill: currentColor; }
+
+/**
+ * Applies styles to the main part of the tooltip.
+ */
+/**
+ * Applies styles to the arrow part of the tooltip.
+ */
+/**
+ * Applies styles to both arrow and main part of the tooltip.
+ */
+/**
+ * Enables the tooltip, which is the tooltip is in DOM but
+ * not yet displayed.
+ */
+/**
+ * Disables the tooltip making it disappear from DOM.
+ */
+/**
+ * Shows the tooltip, which is already in DOM.
+ * Requires `ck-tooltip_enabled` first.
+ */
+[data-ck-tooltip]::after {
+  visibility: hidden;
+  opacity: 0;
+  display: none;
+  position: absolute;
+  z-index: 999;
+  pointer-events: none;
+  -webkit-backface-visibility: hidden; }
+
+[data-ck-tooltip]::before {
+  visibility: hidden;
+  opacity: 0;
+  display: none;
+  position: absolute;
+  z-index: 999;
+  pointer-events: none;
+  -webkit-backface-visibility: hidden; }
+
+[data-ck-tooltip]::after {
+  content: attr(data-ck-tooltip); }
+
+[data-ck-tooltip]::before {
+  content: "";
+  width: 0;
+  height: 0; }
+
+.ck-button,
+a.ck-button {
+  display: inline-block;
+  position: relative;
+  -moz-user-select: none;
+  -webkit-user-select: none;
+  -ms-user-select: none; }
+  .ck-button::after,
+  a.ck-button::after {
+    display: block; }
+  .ck-button::before,
+  a.ck-button::before {
+    display: block; }
+  .ck-button.ck-button_with-text .ck-button__label,
+  a.ck-button.ck-button_with-text .ck-button__label {
+    display: block; }
+  .ck-button:hover::after,
+  a.ck-button:hover::after {
+    visibility: visible;
+    opacity: 1; }
+  .ck-button:hover::before,
+  a.ck-button:hover::before {
+    visibility: visible;
+    opacity: 1; }
+  .ck-button:focus:not(:hover)::after,
+  a.ck-button:focus:not(:hover)::after {
+    display: none; }
+  .ck-button:focus:not(:hover)::before,
+  a.ck-button:focus:not(:hover)::before {
+    display: none; }
+  .ck-button .ck-button__label,
+  a.ck-button .ck-button__label {
+    display: none; }
+
+.ck-toolbar {
+  -moz-user-select: none;
+  -webkit-user-select: none;
+  -ms-user-select: none; }
+  .ck-toolbar__separator {
+    display: inline-block; }
+  .ck-toolbar__newline {
+    display: block;
+    clear: left; }
+
+.ck-dropdown {
+  display: inline-block;
+  position: relative; }
+  .ck-dropdown::after {
+    content: '';
+    width: 0;
+    height: 0;
+    pointer-events: none;
+    z-index: 1;
+    position: absolute;
+    top: 50%;
+    transform: translate(0, -50%); }
+
+.ck-dropdown__panel {
+  -webkit-backface-visibility: hidden;
+  display: none;
+  z-index: 999;
+  position: absolute;
+  left: 0px;
+  transform: translateY(100%); }
+  .ck-dropdown__panel-visible {
+    display: inline-block; }
+
+.ck-list {
+  -moz-user-select: none;
+  -webkit-user-select: none;
+  -ms-user-select: none; }
+  .ck-list__item {
+    display: block; }
+
+.ck-label {
+  display: block; }
+
+.cke-voice-label {
+  display: none; }
+
+.ck-balloon-panel {
+  -moz-user-select: none;
+  -webkit-user-select: none;
+  -ms-user-select: none;
+  display: none;
+  position: absolute;
+  z-index: 999; }
+  .ck-balloon-panel:before, .ck-balloon-panel:after {
+    content: "";
+    position: absolute; }
+  .ck-balloon-panel:before {
+    z-index: 1; }
+  .ck-balloon-panel:after {
+    z-index: 2; }
+  .ck-balloon-panel_arrow_s:before, .ck-balloon-panel_arrow_se:before, .ck-balloon-panel_arrow_sw:before {
+    z-index: 1; }
+  .ck-balloon-panel_arrow_s:after, .ck-balloon-panel_arrow_se:after, .ck-balloon-panel_arrow_sw:after {
+    z-index: 2; }
+  .ck-balloon-panel_arrow_n:before, .ck-balloon-panel_arrow_ne:before, .ck-balloon-panel_arrow_nw:before {
+    z-index: 1; }
+  .ck-balloon-panel_arrow_n:after, .ck-balloon-panel_arrow_ne:after, .ck-balloon-panel_arrow_nw:after {
+    z-index: 2; }
+  .ck-balloon-panel_visible {
+    display: block; }
+
+.ck-floating-panel {
+  position: absolute;
+  display: none; }
+  .ck-floating-panel_active {
+    display: block; }
+
+.ck-editor .ck-toolbar.ck-toolbar_sticky {
+  position: fixed;
+  top: 0; }
+  .ck-editor .ck-toolbar.ck-toolbar_sticky.ck-toolbar_sticky_bottom-limit {
+    top: auto;
+    position: absolute; }
+
+/**
+ * Colors configured by the user.
+ *
+ * @type Map
+ * @example
+ *		$ck-colors: ( 'foreground': red );
+ * @see $_ck-colors
+ */
+/**
+ * Internal map with default colors.
+ *
+ * @type Map
+ * @see ck-color-add
+ */
+/**
+ * Returns a color of given name and lightness offset.
+ *
+ * @param {String} $name [ 'background' ] - Name of the color.
+ * @param {Number} $offset [ 0 ] - Offset of the lightness.
+ * @return {String}
+ * @see $_ck-colors
+ */
+/**
+ * Returns a border–color for a given name and lightness offset.
+ *
+ * @param {String} $name [ 'background' ] - Name of the color.
+ * @param {Number} $offset [ 0 ] - Offset of the lightness.
+ * @return {String}
+ * @see $ck-color
+ */
+/**
+ * Adds a color to internal color map.
+ *
+ * @example
+ *		@include ck-color-add( ( 'special': yellow, 'hover': #00FF00 ) );
+ * @param {Map} $map - A map with new colors.
+ * @see $_ck-colors
+ */
+/**
+ * Base font size.
+ *
+ * @see $ck-font-sizes
+ */
+/**
+ * Base font face.
+ *
+ */
+/**
+ * Base font sizes for scaling.
+ *
+ * @see ck-font-size
+ */
+/**
+ * Returns font-size in units for given level.
+ *
+ * @param {Number} $level [ 0 ] - Size of the font.
+ * @return {String}
+ * @see $ck-font-sizes
+ * @see $ck-font-size-base
+ */
+/**
+ * Default border-radius value.
+ *
+ */
+/**
+ * Implements rounded corner interface for .ck-rounded-corners class.
+ *
+ * @see $ck-border-radius
+ */
+/**
+ * Default spacing value ("unit").
+ *
+ */
+/**
+ * Internal map with default spacings.
+ *
+ * @type Map
+ * @see ck-spacing
+ */
+/**
+ * Returns a spacing value with units for given name.
+ *
+ * @param {String} $spacing [ 'standard' ] - Spacing level.
+ * @return {String}
+ * @see $ck-def-spacing
+ * @see $ck-def-spacings
+ */
+/**
+ * A visual style of focused element's outer shadow.
+ */
+/**
+ * A visual style of focused element's border or outline.
+ */
+/**
+ * A class which indicates that an element holding it is disabled.
+ */
+.ck-disabled {
+  opacity: .5; }
+
+/**
+ * A visual style of focused element's border or outline.
+ */
+/**
+ * Brings visual styling for :focus state.
+ */
+/**
+ * A visual style of element's inner shadow (i.e. input).
+ */
+/**
+ * A visual style of element's drop shadow (i.e. panel).
+ */
+/**
+ * A helper to combine multiple shadows.
+ */
+/**
+ * Gives an element a drop shadow so it looks like a floating panel.
+ */
+/**
+ * Resets an element, ignoring its children.
+ */
+.ck-reset, .ck-reset_all, .ck-reset_all *, .ck-reset_all a, .ck-reset_all textarea {
+  margin: 0;
+  padding: 0;
+  border: 0;
+  background: transparent;
+  text-decoration: none;
+  vertical-align: middle;
+  transition: none; }
+
+/**
+ * Resets an element AND its children.
+ */
+.ck-reset_all, .ck-reset_all *, .ck-reset_all a, .ck-reset_all textarea {
+  border-collapse: collapse;
+  font: normal normal normal 12px Helvetica, Arial, Tahoma, Verdana, Sans-Serif;
+  color: #333333;
+  text-align: left;
+  white-space: nowrap;
+  cursor: auto;
+  float: none; }
+
+.ck-reset_all .ck-rtl * {
+  text-align: right; }
+
+.ck-reset_all iframe {
+  vertical-align: inherit; }
+
+.ck-reset_all textarea {
+  white-space: pre-wrap; }
+
+.ck-reset_all textarea,
+.ck-reset_all input[type="text"],
+.ck-reset_all input[type="password"] {
+  cursor: text; }
+
+.ck-reset_all textarea[disabled],
+.ck-reset_all input[type="text"][disabled],
+.ck-reset_all input[type="password"][disabled] {
+  cursor: default; }
+
+.ck-reset_all fieldset {
+  padding: 10px;
+  border: 2px groove #E0DFE3; }
+
+.ck-reset_all button::-moz-focus-inner {
+  padding: 0;
+  border: 0; }
+
+svg.ck-icon {
+  width: 1.66667em;
+  height: 1.66667em; }
+
+[data-ck-tooltip]::after {
+  left: 50%;
+  transition: opacity .2s ease-in-out .2s; }
+
+[data-ck-tooltip]::before {
+  left: 50%;
+  transition: opacity .2s ease-in-out .2s; }
+
+[data-ck-tooltip]::after {
+  border-radius: 2px;
+  color: white;
+  font-size: 0.7rem;
+  background: #333333;
+  padding: 0.4em 0.64em; }
+
+[data-ck-tooltip]::before {
+  border-style: solid; }
+
+/**
+ * A class once applied displays the tooltip south of the element.
+ *
+ *       [element]
+ *           ^
+ *     +-----------+
+ *     |  Tooltip  |
+ *     +-----------+
+ */
+.ck-tooltip_s::after {
+  bottom: -4px;
+  transform: translate(-50%, 100%); }
+
+.ck-tooltip_s::before {
+  bottom: 0;
+  transform: translate(-50%, 100%);
+  border-color: transparent transparent #333333 transparent;
+  border-width: 0 5px 5px 5px; }
+
+/**
+ * A class once applied displays the tooltip north of the element.
+ *
+ *     +-----------+
+ *     |  Tooltip  |
+ *     +-----------+
+ *           V
+ *       [element]
+ */
+.ck-tooltip_n::after {
+  top: -4px;
+  transform: translate(-50%, -100%); }
+
+.ck-tooltip_n::before {
+  top: 0;
+  transform: translate(-50%, -100%);
+  border-color: #333333 transparent transparent transparent;
+  border-width: 5px 5px 0 5px; }
+
+/**
+ * Implements a button of given background color.
+ *
+ * @param {String} $color - Background color of the button.
+ */
+/**
+ * Implements button states.
+ *
+ * @param {String} $color - Background color of the button.
+ */
+/**
+ * A helper to define button–specific icon styles.
+ *
+ */
+.ck-button,
+a.ck-button {
+  background: white;
+  border-color: #bfbfbf;
+  border-width: 1px;
+  border-style: solid;
+  white-space: nowrap;
+  cursor: default;
+  vertical-align: middle;
+  padding: 0.4em;
+  line-height: 1.66667; }
+  .ck-button:not(.ck-disabled):hover, .ck-button:not(.ck-disabled):focus,
+  a.ck-button:not(.ck-disabled):hover,
+  a.ck-button:not(.ck-disabled):focus {
+    background: #e6e6e6;
+    border-color: #a6a6a6; }
+  .ck-button:not(.ck-disabled):active,
+  a.ck-button:not(.ck-disabled):active {
+    background: #d9d9d9;
+    border-color: #999999;
+    box-shadow: inset 0 2px 2px #bfbfbf; }
+  .ck-button.ck-rounded-corners,
+  .ck-rounded-corners .ck-button,
+  a.ck-button.ck-rounded-corners,
+  .ck-rounded-corners
+  a.ck-button {
+    border-radius: 2px; }
+  .ck-button:focus,
+  a.ck-button:focus {
+    outline: none;
+    border: 1px solid #6ab5f9;
+    box-shadow: 0 0 3px 2px #9bcdfb; }
+  .ck-button .ck-icon,
+  a.ck-button .ck-icon {
+    float: left; }
+  .ck-button.ck-button_with-text,
+  a.ck-button.ck-button_with-text {
+    padding: 0.4em 0.8em; }
+    .ck-button.ck-button_with-text .ck-icon,
+    a.ck-button.ck-button_with-text .ck-icon {
+      margin-left: -0.4em;
+      margin-right: 0.4em; }
+    .ck-button.ck-button_with-text .ck-button__label,
+    a.ck-button.ck-button_with-text .ck-button__label {
+      display: block; }
+  .ck-button.ck-on,
+  a.ck-button.ck-on {
+    background: #f7f7f7;
+    border-color: #b9b9b9; }
+    .ck-button.ck-on:not(.ck-disabled):hover, .ck-button.ck-on:not(.ck-disabled):focus,
+    a.ck-button.ck-on:not(.ck-disabled):hover,
+    a.ck-button.ck-on:not(.ck-disabled):focus {
+      background: #dedede;
+      border-color: #a1a1a1; }
+    .ck-button.ck-on:not(.ck-disabled):active,
+    a.ck-button.ck-on:not(.ck-disabled):active {
+      background: #d2d2d2;
+      border-color: #949494;
+      box-shadow: inset 0 2px 2px #b9b9b9; }
+  .ck-button-action,
+  a.ck-button-action {
+    background: #61b145;
+    border-color: #498534;
+    text-shadow: 0 -1px #4e8e37;
+    color: white; }
+    .ck-button-action:not(.ck-disabled):hover, .ck-button-action:not(.ck-disabled):focus,
+    a.ck-button-action:not(.ck-disabled):hover,
+    a.ck-button-action:not(.ck-disabled):focus {
+      background: #579f3e;
+      border-color: #3f732d; }
+    .ck-button-action:not(.ck-disabled):active,
+    a.ck-button-action:not(.ck-disabled):active {
+      background: #52963b;
+      border-color: #3a6a29;
+      box-shadow: inset 0 2px 2px #498534; }
+    .ck-button-action:hover, .ck-button-action:focus, .ck-button-action:active,
+    a.ck-button-action:hover,
+    a.ck-button-action:focus,
+    a.ck-button-action:active {
+      text-shadow: 0 -1px #3a6a29; }
+  .ck-button-bold,
+  a.ck-button-bold {
+    font-weight: bold; }
+  .ck-button .ck-icon use,
+  .ck-button .ck-icon use *,
+  a.ck-button .ck-icon use,
+  a.ck-button .ck-icon use * {
+    color: inherit; }
+  .ck-button .ck-button__label,
+  a.ck-button .ck-button__label {
+    float: left;
+    line-height: inherit;
+    font-size: inherit;
+    font-weight: inherit;
+    color: inherit;
+    cursor: inherit; }
+
+.ck-toolbar {
+  line-height: 1;
+  padding: 0.4em;
+  border: 1px solid #bfbfbf;
+  white-space: initial;
+  -moz-user-select: none;
+  -webkit-user-select: none;
+  -ms-user-select: none; }
+  .ck-toolbar.ck-rounded-corners,
+  .ck-rounded-corners .ck-toolbar {
+    border-radius: 2px; }
+  .ck-toolbar__separator {
+    width: 1px;
+    height: calc( 1em + 2 * 0.64em);
+    vertical-align: middle;
+    background: #bfbfbf; }
+  .ck-toolbar__newline {
+    height: 0.4em; }
+  .ck-toolbar > * {
+    margin-right: 0.4em; }
+  .ck-toolbar > *:last-child {
+    margin-right: 0; }
+
+.ck-dropdown::after {
+  border-style: solid;
+  border-width: .4em .4em 0 .4em;
+  border-color: #707070 transparent;
+  right: 0.8em; }
+
+.ck-dropdown .ck-button.ck-dropdown__button {
+  padding-right: 1.6em; }
+  .ck-dropdown .ck-button.ck-dropdown__button .ck-button__label {
+    width: 7em;
+    overflow: hidden;
+    text-overflow: ellipsis; }
+
+.ck-dropdown__panel {
+  border: 1px solid #b9b9b9;
+  bottom: 1px;
+  background: white;
+  box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.2); }
+  .ck-dropdown__panel.ck-rounded-corners,
+  .ck-rounded-corners .ck-dropdown__panel {
+    border-radius: 2px; }
+
+.ck-list {
+  -moz-user-select: none;
+  -webkit-user-select: none;
+  -ms-user-select: none;
+  list-style-type: none;
+  background: white; }
+  .ck-list.ck-rounded-corners,
+  .ck-rounded-corners .ck-list {
+    border-radius: 2px; }
+  .ck-list__item {
+    padding: 0.64em;
+    cursor: default;
+    min-width: 12em; }
+    .ck-list__item:hover, .ck-list__item:focus {
+      background: #f7f7f7; }
+    .ck-list__item:focus {
+      box-shadow: 0 0 3px 2px #9bcdfb;
+      position: relative;
+      z-index: 1;
+      outline: none; }
+    .ck-list__item:last-of-type {
+      border: none; }
+    .ck-list__item_active {
+      background: #1a8bf1;
+      color: white; }
+      .ck-list__item_active:hover, .ck-list__item_active:focus {
+        background: #0e7ee2; }
+
+.ck-label {
+  font-weight: bold; }
+
+.ck-input-text {
+  box-shadow: 2px 2px 3px #e6e6e6 inset;
+  border: 1px solid #b9b9b9;
+  padding: 0.64em;
+  min-width: 250px; }
+  .ck-input-text.ck-rounded-corners,
+  .ck-rounded-corners .ck-input-text {
+    border-radius: 2px; }
+  .ck-input-text:focus {
+    outline: none;
+    border: 1px solid #6ab5f9;
+    box-shadow: 0 0 3px 2px #9bcdfb, 2px 2px 3px #e6e6e6 inset; }
+
+.ck-balloon-panel {
+  box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.2);
+  min-width: 50px;
+  min-height: 15px;
+  background: white;
+  border: 1px solid #b9b9b9; }
+  .ck-balloon-panel.ck-rounded-corners,
+  .ck-rounded-corners .ck-balloon-panel {
+    border-radius: 2px; }
+  .ck-balloon-panel:before, .ck-balloon-panel:after {
+    width: 0;
+    height: 0;
+    border-style: solid; }
+  .ck-balloon-panel_arrow_s:before, .ck-balloon-panel_arrow_s:after, .ck-balloon-panel_arrow_se:before, .ck-balloon-panel_arrow_se:after, .ck-balloon-panel_arrow_sw:before, .ck-balloon-panel_arrow_sw:after {
+    border-width: 0 10px 15px 10px; }
+  .ck-balloon-panel_arrow_s:before, .ck-balloon-panel_arrow_se:before, .ck-balloon-panel_arrow_sw:before {
+    border-color: transparent transparent #b9b9b9 transparent; }
+  .ck-balloon-panel_arrow_s:after, .ck-balloon-panel_arrow_se:after, .ck-balloon-panel_arrow_sw:after {
+    border-color: transparent transparent white transparent;
+    margin-top: 2px; }
+  .ck-balloon-panel_arrow_n:before, .ck-balloon-panel_arrow_n:after, .ck-balloon-panel_arrow_ne:before, .ck-balloon-panel_arrow_ne:after, .ck-balloon-panel_arrow_nw:before, .ck-balloon-panel_arrow_nw:after {
+    border-width: 15px 10px 0 10px; }
+  .ck-balloon-panel_arrow_n:before, .ck-balloon-panel_arrow_ne:before, .ck-balloon-panel_arrow_nw:before {
+    border-color: #b9b9b9 transparent transparent; }
+  .ck-balloon-panel_arrow_n:after, .ck-balloon-panel_arrow_ne:after, .ck-balloon-panel_arrow_nw:after {
+    border-color: white transparent transparent transparent;
+    margin-bottom: 2px; }
+  .ck-balloon-panel_arrow_s:before, .ck-balloon-panel_arrow_s:after {
+    left: 50%;
+    margin-left: -10px;
+    top: -15px; }
+  .ck-balloon-panel_arrow_se:before, .ck-balloon-panel_arrow_se:after {
+    left: 20px;
+    top: -15px; }
+  .ck-balloon-panel_arrow_sw:before, .ck-balloon-panel_arrow_sw:after {
+    right: 20px;
+    top: -15px; }
+  .ck-balloon-panel_arrow_n:before, .ck-balloon-panel_arrow_n:after {
+    left: 50%;
+    margin-left: -10px;
+    bottom: -15px; }
+  .ck-balloon-panel_arrow_ne:before, .ck-balloon-panel_arrow_ne:after {
+    left: 20px;
+    bottom: -15px; }
+  .ck-balloon-panel_arrow_nw:before, .ck-balloon-panel_arrow_nw:after {
+    right: 20px;
+    bottom: -15px; }
+
+.ck-floating-panel {
+  box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.2);
+  border: 1px solid #bfbfbf;
+  background: #f7f7f7; }
+  .ck-floating-panel.ck-rounded-corners,
+  .ck-rounded-corners .ck-floating-panel {
+    border-radius: 2px; }
+
+.ck-toolbar__container {
+  background: #f7f7f7; }
+  .ck-toolbar__container .ck-toolbar {
+    border-radius: 0;
+    border: 0; }
+    .ck-toolbar__container .ck-toolbar .ck-button {
+      border-width: 0; }
+      .ck-toolbar__container .ck-toolbar .ck-button:not(:hover):not(:focus):not(.ck-on), .ck-toolbar__container .ck-toolbar .ck-button.ck-disabled {
+        background: #f7f7f7; }
+      .ck-toolbar__container .ck-toolbar .ck-button.ck-on {
+        background: #dedede;
+        border-color: #a1a1a1; }
+        .ck-toolbar__container .ck-toolbar .ck-button.ck-on:not(.ck-disabled):hover, .ck-toolbar__container .ck-toolbar .ck-button.ck-on:not(.ck-disabled):focus {
+          background: #c6c6c6;
+          border-color: #888888; }
+        .ck-toolbar__container .ck-toolbar .ck-button.ck-on:not(.ck-disabled):active {
+          background: #b9b9b9;
+          border-color: #7c7c7c;
+          box-shadow: inset 0 2px 2px #a1a1a1; }
+    .ck-toolbar__container .ck-toolbar .ck-dropdown__button {
+      border-width: 1px; }
+      .ck-toolbar__container .ck-toolbar .ck-dropdown__button:not(:hover):not(:focus):not(.ck-on) {
+        background: white; }
+  .ck-toolbar__container.ck-balloon-panel_arrow_s:after, .ck-toolbar__container.ck-balloon-panel_arrow_se:after, .ck-toolbar__container.ck-balloon-panel_arrow_sw:after {
+    border-bottom-color: #f7f7f7; }
+  .ck-toolbar__container.ck-balloon-panel_arrow_n:after, .ck-toolbar__container.ck-balloon-panel_arrow_ne:after, .ck-toolbar__container.ck-balloon-panel_arrow_nw:after {
+    border-top-color: #f7f7f7; }
+
+.ck-editor .ck-toolbar.ck-toolbar_sticky {
+  box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.2);
+  border: 1px solid #bfbfbf;
+  border-width: 0 0 1px;
+  background: #f7f7f7; }
+
+.ck-editor {
+  position: relative; }
+  .ck-editor.ck-rounded-corners,
+  .ck-rounded-corners .ck-editor {
+    border-radius: 2px; }
+  .ck-editor .ck-editor__top .ck-toolbar {
+    border-radius: 0;
+    border-top: 0;
+    border-left: 0;
+    border-right: 0; }
+    .ck-editor .ck-editor__top .ck-toolbar .ck-button {
+      border-width: 0; }
+      .ck-editor .ck-editor__top .ck-toolbar .ck-button:not(:hover):not(:focus):not(.ck-on), .ck-editor .ck-editor__top .ck-toolbar .ck-button.ck-disabled {
+        background: #f7f7f7; }
+      .ck-editor .ck-editor__top .ck-toolbar .ck-button.ck-on {
+        background: #dedede;
+        border-color: #a1a1a1; }
+        .ck-editor .ck-editor__top .ck-toolbar .ck-button.ck-on:not(.ck-disabled):hover, .ck-editor .ck-editor__top .ck-toolbar .ck-button.ck-on:not(.ck-disabled):focus {
+          background: #c6c6c6;
+          border-color: #888888; }
+        .ck-editor .ck-editor__top .ck-toolbar .ck-button.ck-on:not(.ck-disabled):active {
+          background: #b9b9b9;
+          border-color: #7c7c7c;
+          box-shadow: inset 0 2px 2px #a1a1a1; }
+    .ck-editor .ck-editor__top .ck-toolbar .ck-dropdown__button {
+      border-width: 1px; }
+      .ck-editor .ck-editor__top .ck-toolbar .ck-dropdown__button:not(:hover):not(:focus):not(.ck-on) {
+        background: white; }
+  .ck-editor .ck-editor__main {
+    background: white; }
+  .ck-editor .ck-editor__bottom {
+    border-bottom: 0;
+    border-left: 0;
+    border-right: 0;
+    padding: 0.8em; }
+  .ck-editor .ck-editor__editable.ck-focused {
+    outline: 1px solid #6ab5f9;
+    box-shadow: 2px 2px 3px #e6e6e6 inset; }
+  .ck-editor .ck-editor__editable_inline {
+    overflow: auto;
+    padding: 0 0.8em; }
+
+.ck-editor,
+.ck-editor-bottom {
+  background: #f7f7f7;
+  border: 1px solid #b9b9b9; }
+blockquote {
+  border-left: solid 5px #CCC;
+  padding-left: 20px;
+  margin-left: 0;
+  font-style: italic; }
+/**
+ * Default spacing value ("unit").
+ *
+ */
+/**
+ * Internal map with default spacings.
+ *
+ * @type Map
+ * @see ck-spacing
+ */
+/**
+ * Returns a spacing value with units for given name.
+ *
+ * @param {String} $spacing [ 'standard' ] - Spacing level.
+ * @return {String}
+ * @see $ck-def-spacing
+ * @see $ck-def-spacings
+ */
+/**
+ * Base font size.
+ *
+ * @see $ck-font-sizes
+ */
+/**
+ * Base font face.
+ *
+ */
+/**
+ * Base font sizes for scaling.
+ *
+ * @see ck-font-size
+ */
+/**
+ * Returns font-size in units for given level.
+ *
+ * @param {Number} $level [ 0 ] - Size of the font.
+ * @return {String}
+ * @see $ck-font-sizes
+ * @see $ck-font-size-base
+ */
+.ck-heading_heading1 {
+  font-size: 1.5em; }
+
+.ck-heading_heading2 {
+  font-size: 1.3em; }
+
+.ck-heading_heading3 {
+  font-size: 1.1em; }
+
+[class*="ck-heading_"] {
+  line-height: 21.6px;
+  padding: 9.6px; }
+
+[class*="ck-heading_heading"] {
+  font-weight: bold; }
+
+.ck-dropdown.ck-heading-dropdown .ck-dropdown__button .ck-button__label {
+  width: 8em; }
+@charset "UTF-8";
+/**
+ * Colors configured by the user.
+ *
+ * @type Map
+ * @example
+ *		$ck-colors: ( 'foreground': red );
+ * @see $_ck-colors
+ */
+/**
+ * Internal map with default colors.
+ *
+ * @type Map
+ * @see ck-color-add
+ */
+/**
+ * Returns a color of given name and lightness offset.
+ *
+ * @param {String} $name [ 'background' ] - Name of the color.
+ * @param {Number} $offset [ 0 ] - Offset of the lightness.
+ * @return {String}
+ * @see $_ck-colors
+ */
+/**
+ * Returns a border–color for a given name and lightness offset.
+ *
+ * @param {String} $name [ 'background' ] - Name of the color.
+ * @param {Number} $offset [ 0 ] - Offset of the lightness.
+ * @return {String}
+ * @see $ck-color
+ */
+/**
+ * Adds a color to internal color map.
+ *
+ * @example
+ *		@include ck-color-add( ( 'special': yellow, 'hover': #00FF00 ) );
+ * @param {Map} $map - A map with new colors.
+ * @see $_ck-colors
+ */
+/**
+ * A visual style of element's inner shadow (i.e. input).
+ */
+/**
+ * A visual style of element's drop shadow (i.e. panel).
+ */
+/**
+ * A helper to combine multiple shadows.
+ */
+/**
+ * Gives an element a drop shadow so it looks like a floating panel.
+ */
+/**
+ * A visual style of focused element's outer shadow.
+ */
+/**
+ * A visual style of focused element's border or outline.
+ */
+/**
+ * A class which indicates that an element holding it is disabled.
+ */
+.ck-disabled {
+  opacity: .5; }
+
+/**
+ * A visual style of focused element's border or outline.
+ */
+/**
+ * Brings visual styling for :focus state.
+ */
+/**
+ * Default spacing value ("unit").
+ *
+ */
+/**
+ * Internal map with default spacings.
+ *
+ * @type Map
+ * @see ck-spacing
+ */
+/**
+ * Returns a spacing value with units for given name.
+ *
+ * @param {String} $spacing [ 'standard' ] - Spacing level.
+ * @return {String}
+ * @see $ck-def-spacing
+ * @see $ck-def-spacings
+ */
+.ck-widget {
+  margin: 0.8em 0;
+  padding: 0; }
+  .ck-widget.ck-widget_selected, .ck-widget.ck-widget_selected:hover {
+    outline: 3px solid #6ab5f9; }
+  .ck-editor__editable.ck-blurred .ck-widget.ck-widget_selected {
+    outline: 3px solid #dddddd; }
+  .ck-widget:hover {
+    outline: 3px solid #ffd25c; }
+  .ck-widget .ck-editable.ck-editable_focused, .ck-widget .ck-editable:focus {
+    outline: 1px solid #6ab5f9;
+    box-shadow: 2px 2px 3px #e6e6e6 inset;
+    background-color: white; }
+/**
+ * Default spacing value ("unit").
+ *
+ */
+/**
+ * Internal map with default spacings.
+ *
+ * @type Map
+ * @see ck-spacing
+ */
+/**
+ * Returns a spacing value with units for given name.
+ *
+ * @param {String} $spacing [ 'standard' ] - Spacing level.
+ * @return {String}
+ * @see $ck-def-spacing
+ * @see $ck-def-spacings
+ */
+.cke-text-alternative-form {
+  padding: 1.2em;
+  overflow: hidden; }
+  .cke-text-alternative-form .ck-label {
+    margin-bottom: 0.4em; }
+  .cke-text-alternative-form__actions {
+    clear: both;
+    padding-top: 1.2em; }
+    .cke-text-alternative-form__actions .ck-button {
+      float: right; }
+      .cke-text-alternative-form__actions .ck-button + .ck-button {
+        margin-right: 0.64em; }
+        .cke-text-alternative-form__actions .ck-button + .ck-button + .ck-button {
+          float: left; }
+.ck-editor__editable .image {
+  text-align: center;
+  clear: both; }
+  .ck-editor__editable .image.image-style-side {
+    float: right;
+    margin-left: 0.8em;
+    max-width: 50%; }
+
+.ck-editor__editable .image > img {
+  display: block;
+  margin: 0 auto;
+  max-width: 100%; }
+.ck-placeholder::before {
+  content: attr(data-placeholder);
+  cursor: text;
+  color: #c2c2c2; }
+@charset "UTF-8";
+/**
+ * Colors configured by the user.
+ *
+ * @type Map
+ * @example
+ *		$ck-colors: ( 'foreground': red );
+ * @see $_ck-colors
+ */
+/**
+ * Internal map with default colors.
+ *
+ * @type Map
+ * @see ck-color-add
+ */
+/**
+ * Returns a color of given name and lightness offset.
+ *
+ * @param {String} $name [ 'background' ] - Name of the color.
+ * @param {Number} $offset [ 0 ] - Offset of the lightness.
+ * @return {String}
+ * @see $_ck-colors
+ */
+/**
+ * Returns a border–color for a given name and lightness offset.
+ *
+ * @param {String} $name [ 'background' ] - Name of the color.
+ * @param {Number} $offset [ 0 ] - Offset of the lightness.
+ * @return {String}
+ * @see $ck-color
+ */
+/**
+ * Adds a color to internal color map.
+ *
+ * @example
+ *		@include ck-color-add( ( 'special': yellow, 'hover': #00FF00 ) );
+ * @param {Map} $map - A map with new colors.
+ * @see $_ck-colors
+ */
+/**
+ * Default spacing value ("unit").
+ *
+ */
+/**
+ * Internal map with default spacings.
+ *
+ * @type Map
+ * @see ck-spacing
+ */
+/**
+ * Returns a spacing value with units for given name.
+ *
+ * @param {String} $spacing [ 'standard' ] - Spacing level.
+ * @return {String}
+ * @see $ck-def-spacing
+ * @see $ck-def-spacings
+ */
+/**
+ * Base font size.
+ *
+ * @see $ck-font-sizes
+ */
+/**
+ * Base font face.
+ *
+ */
+/**
+ * Base font sizes for scaling.
+ *
+ * @see ck-font-size
+ */
+/**
+ * Returns font-size in units for given level.
+ *
+ * @param {Number} $level [ 0 ] - Size of the font.
+ * @return {String}
+ * @see $ck-font-sizes
+ * @see $ck-font-size-base
+ */
+.ck-editor__editable .image > figcaption {
+  background-color: #f7f7f7;
+  padding: 0.8em;
+  font-size: 0.75rem;
+  color: #858585;
+  outline-offset: -1px; }
+/**
+ * Default spacing value ("unit").
+ *
+ */
+/**
+ * Internal map with default spacings.
+ *
+ * @type Map
+ * @see ck-spacing
+ */
+/**
+ * Returns a spacing value with units for given name.
+ *
+ * @param {String} $spacing [ 'standard' ] - Spacing level.
+ * @return {String}
+ * @see $ck-def-spacing
+ * @see $ck-def-spacings
+ */
+.ck-link-form {
+  padding: 1.2em;
+  overflow: hidden; }
+  .ck-link-form .ck-label {
+    margin-bottom: 0.4em; }
+  .ck-link-form__actions {
+    clear: both;
+    padding-top: 1.2em; }
+    .ck-link-form__actions .ck-button {
+      float: right; }
+      .ck-link-form__actions .ck-button + .ck-button {
+        margin-right: 0.64em; }
+        .ck-link-form__actions .ck-button + .ck-button + .ck-button {
+          float: left; }
+
+/*# sourceMappingURL=styles.css.map*/
\ No newline at end of file
diff --git a/js/styles.css.map b/js/styles.css.map
new file mode 100644
index 00000000000..d8dd896ffcb
--- /dev/null
+++ b/js/styles.css.map
@@ -0,0 +1 @@
+{"version":3,"sources":[],"names":[],"mappings":"","file":"styles.css","sourceRoot":""}
\ No newline at end of file
diff --git a/package.json b/package.json
index 1fbc19bbc8c..68f393ad2bf 100644
--- a/package.json
+++ b/package.json
@@ -3,7 +3,7 @@
   "version": "1.0.0",
   "description": "Source of https://ckeditor5.github.io",
   "scripts": {
-    "build": "webpack"
+    "build": "rm -rf build/ && webpack"
   },
   "repository": {
     "type": "git",
@@ -15,16 +15,22 @@
     "url": "https://github.com/CKEditor5/ckeditor5.github.io/issues"
   },
   "homepage": "https://github.com/CKEditor5/ckeditor5.github.io#readme",
+  "dependencies": {
+    "@ckeditor/ckeditor5-autoformat": "^0.5.0",
+    "@ckeditor/ckeditor5-editor-classic": "^0.7.2",
+    "@ckeditor/ckeditor5-presets": "^0.2.1"
+  },
   "devDependencies": {
+    "@ckeditor/ckeditor5-dev-utils": "^2.5.0",
     "babel-core": "^6.22.1",
     "babel-loader": "^6.2.10",
-    "babel-preset-es2015": "^6.22.0",
-    "css-loader": "^0.26.1",
+    "babili-webpack-plugin": "0.0.11",
+    "css-loader": "^0.28.0",
+    "extract-text-webpack-plugin": "^2.1.0",
     "node-sass": "^4.5.0",
     "raw-loader": "^0.5.1",
-    "regenerator-runtime": "^0.10.1",
-    "sass-loader": "^4.1.1",
-    "style-loader": "^0.13.1",
+    "sass-loader": "^6.0.3",
+    "style-loader": "^0.16.1",
     "webpack": "^2.2.1"
   }
 }
diff --git a/webpack.config.js b/webpack.config.js
index 1dbbc720605..49225a015e4 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -7,53 +7,44 @@
 'use strict';
 
 const path = require( 'path' );
-const UglifyJsPlugin = require( 'webpack' ).optimize.UglifyJsPlugin;
+const webpack = require( 'webpack' );
+const { bundler } = require( '@ckeditor/ckeditor5-dev-utils' );
+
+const BabiliPlugin = require( 'babili-webpack-plugin' );
+const ExtractTextPlugin = require( 'extract-text-webpack-plugin' );
 
 module.exports = {
-	context: __dirname,
 	target: 'web',
 
 	entry: [
-		'regenerator-runtime/runtime',
 		'./js/app'
 	],
 
 	output: {
-		path: './js',
-		filename: 'app.bundle.js'
+		path: path.resolve( __dirname, 'build' ),
+		filename: 'app.js'
 	},
 
 	module: {
 		rules: [
 			{
-				test: /\.js$/,
-				use: [
-					{
-						loader: 'babel-loader',
-						query: {
-							presets: [ require( 'babel-preset-es2015' ) ]
-						}
-					}
-				]
-			},
-			{
-				// test: **/ckeditor5-*/theme/icons/*.svg
-				test: /ckeditor5-[^/]+\/theme\/icons\/[^/]+\.svg$/,
+				test: /\.svg$/,
 				use: [ 'raw-loader' ]
 			},
 			{
-				// test: **/ckeditor5-*/theme/**/*.scss
 				test: /\.scss$/,
-				use: [
-					'style-loader',
-					{
-						loader: 'css-loader',
-						options: {
-							minimize: true
-						}
-					},
-					'sass-loader'
-				]
+				use: ExtractTextPlugin.extract( {
+					fallback: 'style-loader',
+					use: [
+						{
+							loader: 'css-loader',
+							options: {
+								minimize: true
+							}
+						},
+						'sass-loader'
+					]
+				} )
 			}
 		]
 	},
@@ -66,8 +57,13 @@ module.exports = {
 	},
 
 	plugins: [
-		new UglifyJsPlugin( {
-			sourceMap: true
+        new ExtractTextPlugin( 'styles.css' ),
+		new BabiliPlugin( null, {
+			comments: false
+		} ),
+		new webpack.BannerPlugin( {
+			banner: bundler.getLicenseBanner(),
+			raw: true
 		} )
 	],