/
draggable.js
1118 lines (915 loc) · 33.6 KB
/
draggable.js
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/*!
* jQuery UI Draggable @VERSION
* http://jqueryui.com
*
* Copyright 2014 jQuery Foundation and other contributors
* Released under the MIT license.
* http://jquery.org/license
*
* http://api.jqueryui.com/draggable/
*/
(function( factory ) {
if ( typeof define === "function" && define.amd ) {
// AMD. Register as an anonymous module.
define([
"jquery",
"./core",
"./mouse",
"./widget"
], factory );
} else {
// Browser globals
factory( jQuery );
}
}(function( $ ) {
$.widget("ui.draggable", $.ui.mouse, {
version: "@VERSION",
widgetEventPrefix: "drag",
options: {
addClasses: true,
appendTo: "parent",
axis: false,
connectToSortable: false,
containment: false,
cursor: "auto",
cursorAt: false,
grid: false,
handle: false,
helper: "original",
iframeFix: false,
opacity: false,
refreshPositions: false,
revert: false,
revertDuration: 500,
scope: "default",
scroll: true,
scrollSensitivity: 20,
scrollSpeed: 20,
snap: false,
snapMode: "both",
snapTolerance: 20,
stack: false,
zIndex: false,
// callbacks
drag: null,
start: null,
stop: null
},
_create: function() {
if ( this.options.helper === "original" ) {
this._setPositionRelative();
}
if (this.options.addClasses){
this.element.addClass("ui-draggable");
}
if (this.options.disabled){
this.element.addClass("ui-draggable-disabled");
}
this._setHandleClassName();
this._mouseInit();
},
_setOption: function( key, value ) {
this._super( key, value );
if ( key === "handle" ) {
this._removeHandleClassName();
this._setHandleClassName();
}
},
_destroy: function() {
if ( ( this.helper || this.element ).is( ".ui-draggable-dragging" ) ) {
this.destroyOnClear = true;
return;
}
this.element.removeClass( "ui-draggable ui-draggable-dragging ui-draggable-disabled" );
this._removeHandleClassName();
this._mouseDestroy();
},
_mouseCapture: function(event) {
var o = this.options;
this._blurActiveElement( event );
// among others, prevent a drag on a resizable-handle
if (this.helper || o.disabled || $(event.target).closest(".ui-resizable-handle").length > 0) {
return false;
}
//Quit if we're not on a valid handle
this.handle = this._getHandle(event);
if (!this.handle) {
return false;
}
this._blockFrames( o.iframeFix === true ? "iframe" : o.iframeFix );
return true;
},
_blockFrames: function( selector ) {
this.iframeBlocks = this.document.find( selector ).map(function() {
var iframe = $( this );
return $( "<div>" )
.css( "position", "absolute" )
.appendTo( iframe.parent() )
.outerWidth( iframe.outerWidth() )
.outerHeight( iframe.outerHeight() )
.offset( iframe.offset() )[ 0 ];
});
},
_unblockFrames: function() {
if ( this.iframeBlocks ) {
this.iframeBlocks.remove();
delete this.iframeBlocks;
}
},
_blurActiveElement: function( event ) {
var document = this.document[ 0 ];
// Only need to blur if the event occurred on the draggable itself, see #10527
if ( !this.handleElement.is( event.target ) ) {
return;
}
// support: IE9
// IE9 throws an "Unspecified error" accessing document.activeElement from an <iframe>
try {
// Support: IE9, IE10
// If the <body> is blurred, IE will switch windows, see #9520
if ( document.activeElement && document.activeElement.nodeName.toLowerCase() !== "body" ) {
// Blur any element that currently has focus, see #4261
$( document.activeElement ).blur();
}
} catch ( error ) {}
},
_mouseStart: function(event) {
var o = this.options;
//Create and append the visible helper
this.helper = this._createHelper(event);
this.helper.addClass("ui-draggable-dragging");
//Cache the helper size
this._cacheHelperProportions();
//If ddmanager is used for droppables, set the global draggable
if ($.ui.ddmanager) {
$.ui.ddmanager.current = this;
}
/*
* - Position generation -
* This block generates everything position related - it's the core of draggables.
*/
//Cache the margins of the original element
this._cacheMargins();
//Store the helper's css position
this.cssPosition = this.helper.css( "position" );
this.scrollParent = this.helper.scrollParent( true );
this.offsetParent = this.helper.offsetParent();
this.hasFixedAncestor = this.helper.parents().filter(function() {
return $( this ).css( "position" ) === "fixed";
}).length > 0;
//The element's absolute position on the page minus margins
this.positionAbs = this.element.offset();
this._refreshOffsets( event );
//Generate the original position
this.originalPosition = this.position = this._generatePosition( event, false );
this.originalPageX = event.pageX;
this.originalPageY = event.pageY;
//Adjust the mouse offset relative to the helper if "cursorAt" is supplied
(o.cursorAt && this._adjustOffsetFromHelper(o.cursorAt));
//Set a containment if given in the options
this._setContainment();
//Trigger event + callbacks
if (this._trigger("start", event) === false) {
this._clear();
return false;
}
//Recache the helper size
this._cacheHelperProportions();
//Prepare the droppable offsets
if ($.ui.ddmanager && !o.dropBehaviour) {
$.ui.ddmanager.prepareOffsets(this, event);
}
// Reset helper's right/bottom css if they're set and set explicit width/height instead
// as this prevents resizing of elements with right/bottom set (see #7772)
this._normalizeRightBottom();
this._mouseDrag(event, true); //Execute the drag once - this causes the helper not to be visible before getting its correct position
//If the ddmanager is used for droppables, inform the manager that dragging has started (see #5003)
if ( $.ui.ddmanager ) {
$.ui.ddmanager.dragStart(this, event);
}
return true;
},
_refreshOffsets: function( event ) {
this.offset = {
top: this.positionAbs.top - this.margins.top,
left: this.positionAbs.left - this.margins.left,
scroll: false,
parent: this._getParentOffset(),
relative: this._getRelativeOffset()
};
this.offset.click = {
left: event.pageX - this.offset.left,
top: event.pageY - this.offset.top
};
},
_mouseDrag: function(event, noPropagation) {
// reset any necessary cached properties (see #5009)
if ( this.hasFixedAncestor ) {
this.offset.parent = this._getParentOffset();
}
//Compute the helpers position
this.position = this._generatePosition( event, true );
this.positionAbs = this._convertPositionTo("absolute");
//Call plugins and callbacks and use the resulting position if something is returned
if (!noPropagation) {
var ui = this._uiHash();
if (this._trigger("drag", event, ui) === false) {
this._mouseUp({});
return false;
}
this.position = ui.position;
}
this.helper[ 0 ].style.left = this.position.left + "px";
this.helper[ 0 ].style.top = this.position.top + "px";
if ($.ui.ddmanager) {
$.ui.ddmanager.drag(this, event);
}
return false;
},
_mouseStop: function(event) {
//If we are using droppables, inform the manager about the drop
var that = this,
dropped = false;
if ($.ui.ddmanager && !this.options.dropBehaviour) {
dropped = $.ui.ddmanager.drop(this, event);
}
//if a drop comes from outside (a sortable)
if (this.dropped) {
dropped = this.dropped;
this.dropped = false;
}
if ((this.options.revert === "invalid" && !dropped) || (this.options.revert === "valid" && dropped) || this.options.revert === true || ($.isFunction(this.options.revert) && this.options.revert.call(this.element, dropped))) {
$(this.helper).animate(this.originalPosition, parseInt(this.options.revertDuration, 10), function() {
if (that._trigger("stop", event) !== false) {
that._clear();
}
});
} else {
if (this._trigger("stop", event) !== false) {
this._clear();
}
}
return false;
},
_mouseUp: function( event ) {
this._unblockFrames();
//If the ddmanager is used for droppables, inform the manager that dragging has stopped (see #5003)
if ( $.ui.ddmanager ) {
$.ui.ddmanager.dragStop(this, event);
}
// Only need to focus if the event occurred on the draggable itself, see #10527
if ( this.handleElement.is( event.target ) ) {
// The interaction is over; whether or not the click resulted in a drag, focus the element
this.element.focus();
}
return $.ui.mouse.prototype._mouseUp.call(this, event);
},
cancel: function() {
if (this.helper.is(".ui-draggable-dragging")) {
this._mouseUp({});
} else {
this._clear();
}
return this;
},
_getHandle: function(event) {
return this.options.handle ?
!!$( event.target ).closest( this.element.find( this.options.handle ) ).length :
true;
},
_setHandleClassName: function() {
this.handleElement = this.options.handle ?
this.element.find( this.options.handle ) : this.element;
this.handleElement.addClass( "ui-draggable-handle" );
},
_removeHandleClassName: function() {
this.handleElement.removeClass( "ui-draggable-handle" );
},
_createHelper: function(event) {
var o = this.options,
helperIsFunction = $.isFunction( o.helper ),
helper = helperIsFunction ?
$( o.helper.apply( this.element[ 0 ], [ event ] ) ) :
( o.helper === "clone" ?
this.element.clone().removeAttr( "id" ) :
this.element );
if (!helper.parents("body").length) {
helper.appendTo((o.appendTo === "parent" ? this.element[0].parentNode : o.appendTo));
}
// http://bugs.jqueryui.com/ticket/9446
// a helper function can return the original element
// which wouldn't have been set to relative in _create
if ( helperIsFunction && helper[ 0 ] === this.element[ 0 ] ) {
this._setPositionRelative();
}
if (helper[0] !== this.element[0] && !(/(fixed|absolute)/).test(helper.css("position"))) {
helper.css("position", "absolute");
}
return helper;
},
_setPositionRelative: function() {
if ( !( /^(?:r|a|f)/ ).test( this.element.css( "position" ) ) ) {
this.element[ 0 ].style.position = "relative";
}
},
_adjustOffsetFromHelper: function(obj) {
if (typeof obj === "string") {
obj = obj.split(" ");
}
if ($.isArray(obj)) {
obj = { left: +obj[0], top: +obj[1] || 0 };
}
if ("left" in obj) {
this.offset.click.left = obj.left + this.margins.left;
}
if ("right" in obj) {
this.offset.click.left = this.helperProportions.width - obj.right + this.margins.left;
}
if ("top" in obj) {
this.offset.click.top = obj.top + this.margins.top;
}
if ("bottom" in obj) {
this.offset.click.top = this.helperProportions.height - obj.bottom + this.margins.top;
}
},
_isRootNode: function( element ) {
return ( /(html|body)/i ).test( element.tagName ) || element === this.document[ 0 ];
},
_getParentOffset: function() {
//Get the offsetParent and cache its position
var po = this.offsetParent.offset(),
document = this.document[ 0 ];
// This is a special case where we need to modify a offset calculated on start, since the following happened:
// 1. The position of the helper is absolute, so it's position is calculated based on the next positioned parent
// 2. The actual offset parent is a child of the scroll parent, and the scroll parent isn't the document, which means that
// the scroll is included in the initial calculation of the offset of the parent, and never recalculated upon drag
if (this.cssPosition === "absolute" && this.scrollParent[0] !== document && $.contains(this.scrollParent[0], this.offsetParent[0])) {
po.left += this.scrollParent.scrollLeft();
po.top += this.scrollParent.scrollTop();
}
if ( this._isRootNode( this.offsetParent[ 0 ] ) ) {
po = { top: 0, left: 0 };
}
return {
top: po.top + (parseInt(this.offsetParent.css("borderTopWidth"), 10) || 0),
left: po.left + (parseInt(this.offsetParent.css("borderLeftWidth"), 10) || 0)
};
},
_getRelativeOffset: function() {
if ( this.cssPosition !== "relative" ) {
return { top: 0, left: 0 };
}
var p = this.element.position(),
scrollIsRootNode = this._isRootNode( this.scrollParent[ 0 ] );
return {
top: p.top - ( parseInt(this.helper.css( "top" ), 10) || 0 ) + ( !scrollIsRootNode ? this.scrollParent.scrollTop() : 0 ),
left: p.left - ( parseInt(this.helper.css( "left" ), 10) || 0 ) + ( !scrollIsRootNode ? this.scrollParent.scrollLeft() : 0 )
};
},
_cacheMargins: function() {
this.margins = {
left: (parseInt(this.element.css("marginLeft"), 10) || 0),
top: (parseInt(this.element.css("marginTop"), 10) || 0),
right: (parseInt(this.element.css("marginRight"), 10) || 0),
bottom: (parseInt(this.element.css("marginBottom"), 10) || 0)
};
},
_cacheHelperProportions: function() {
this.helperProportions = {
width: this.helper.outerWidth(),
height: this.helper.outerHeight()
};
},
_setContainment: function() {
var isUserScrollable, c, ce,
o = this.options,
document = this.document[ 0 ];
this.relativeContainer = null;
if ( !o.containment ) {
this.containment = null;
return;
}
if ( o.containment === "window" ) {
this.containment = [
$( window ).scrollLeft() - this.offset.relative.left - this.offset.parent.left,
$( window ).scrollTop() - this.offset.relative.top - this.offset.parent.top,
$( window ).scrollLeft() + $( window ).width() - this.helperProportions.width - this.margins.left,
$( window ).scrollTop() + ( $( window ).height() || document.body.parentNode.scrollHeight ) - this.helperProportions.height - this.margins.top
];
return;
}
if ( o.containment === "document") {
this.containment = [
0,
0,
$( document ).width() - this.helperProportions.width - this.margins.left,
( $( document ).height() || document.body.parentNode.scrollHeight ) - this.helperProportions.height - this.margins.top
];
return;
}
if ( o.containment.constructor === Array ) {
this.containment = o.containment;
return;
}
if ( o.containment === "parent" ) {
o.containment = this.helper[ 0 ].parentNode;
}
c = $( o.containment );
ce = c[ 0 ];
if ( !ce ) {
return;
}
isUserScrollable = /(scroll|auto)/.test( c.css( "overflow" ) );
this.containment = [
( parseInt( c.css( "borderLeftWidth" ), 10 ) || 0 ) + ( parseInt( c.css( "paddingLeft" ), 10 ) || 0 ),
( parseInt( c.css( "borderTopWidth" ), 10 ) || 0 ) + ( parseInt( c.css( "paddingTop" ), 10 ) || 0 ),
( isUserScrollable ? Math.max( ce.scrollWidth, ce.offsetWidth ) : ce.offsetWidth ) -
( parseInt( c.css( "borderRightWidth" ), 10 ) || 0 ) -
( parseInt( c.css( "paddingRight" ), 10 ) || 0 ) -
this.helperProportions.width -
this.margins.left -
this.margins.right,
( isUserScrollable ? Math.max( ce.scrollHeight, ce.offsetHeight ) : ce.offsetHeight ) -
( parseInt( c.css( "borderBottomWidth" ), 10 ) || 0 ) -
( parseInt( c.css( "paddingBottom" ), 10 ) || 0 ) -
this.helperProportions.height -
this.margins.top -
this.margins.bottom
];
this.relativeContainer = c;
},
_convertPositionTo: function(d, pos) {
if (!pos) {
pos = this.position;
}
var mod = d === "absolute" ? 1 : -1,
scrollIsRootNode = this._isRootNode( this.scrollParent[ 0 ] );
return {
top: (
pos.top + // The absolute mouse position
this.offset.relative.top * mod + // Only for relative positioned nodes: Relative offset from element to offset parent
this.offset.parent.top * mod - // The offsetParent's offset without borders (offset + border)
( ( this.cssPosition === "fixed" ? -this.offset.scroll.top : ( scrollIsRootNode ? 0 : this.offset.scroll.top ) ) * mod)
),
left: (
pos.left + // The absolute mouse position
this.offset.relative.left * mod + // Only for relative positioned nodes: Relative offset from element to offset parent
this.offset.parent.left * mod - // The offsetParent's offset without borders (offset + border)
( ( this.cssPosition === "fixed" ? -this.offset.scroll.left : ( scrollIsRootNode ? 0 : this.offset.scroll.left ) ) * mod)
)
};
},
_generatePosition: function( event, constrainPosition ) {
var containment, co, top, left,
o = this.options,
scrollIsRootNode = this._isRootNode( this.scrollParent[ 0 ] ),
pageX = event.pageX,
pageY = event.pageY;
// Cache the scroll
if ( !scrollIsRootNode || !this.offset.scroll ) {
this.offset.scroll = {
top: this.scrollParent.scrollTop(),
left: this.scrollParent.scrollLeft()
};
}
/*
* - Position constraining -
* Constrain the position to a mix of grid, containment.
*/
// If we are not dragging yet, we won't check for options
if ( constrainPosition ) {
if ( this.containment ) {
if ( this.relativeContainer ){
co = this.relativeContainer.offset();
containment = [
this.containment[ 0 ] + co.left,
this.containment[ 1 ] + co.top,
this.containment[ 2 ] + co.left,
this.containment[ 3 ] + co.top
];
} else {
containment = this.containment;
}
if (event.pageX - this.offset.click.left < containment[0]) {
pageX = containment[0] + this.offset.click.left;
}
if (event.pageY - this.offset.click.top < containment[1]) {
pageY = containment[1] + this.offset.click.top;
}
if (event.pageX - this.offset.click.left > containment[2]) {
pageX = containment[2] + this.offset.click.left;
}
if (event.pageY - this.offset.click.top > containment[3]) {
pageY = containment[3] + this.offset.click.top;
}
}
if (o.grid) {
//Check for grid elements set to 0 to prevent divide by 0 error causing invalid argument errors in IE (see ticket #6950)
top = o.grid[1] ? this.originalPageY + Math.round((pageY - this.originalPageY) / o.grid[1]) * o.grid[1] : this.originalPageY;
pageY = containment ? ((top - this.offset.click.top >= containment[1] || top - this.offset.click.top > containment[3]) ? top : ((top - this.offset.click.top >= containment[1]) ? top - o.grid[1] : top + o.grid[1])) : top;
left = o.grid[0] ? this.originalPageX + Math.round((pageX - this.originalPageX) / o.grid[0]) * o.grid[0] : this.originalPageX;
pageX = containment ? ((left - this.offset.click.left >= containment[0] || left - this.offset.click.left > containment[2]) ? left : ((left - this.offset.click.left >= containment[0]) ? left - o.grid[0] : left + o.grid[0])) : left;
}
if ( o.axis === "y" ) {
pageX = this.originalPageX;
}
if ( o.axis === "x" ) {
pageY = this.originalPageY;
}
}
return {
top: (
pageY - // The absolute mouse position
this.offset.click.top - // Click offset (relative to the element)
this.offset.relative.top - // Only for relative positioned nodes: Relative offset from element to offset parent
this.offset.parent.top + // The offsetParent's offset without borders (offset + border)
( this.cssPosition === "fixed" ? -this.offset.scroll.top : ( scrollIsRootNode ? 0 : this.offset.scroll.top ) )
),
left: (
pageX - // The absolute mouse position
this.offset.click.left - // Click offset (relative to the element)
this.offset.relative.left - // Only for relative positioned nodes: Relative offset from element to offset parent
this.offset.parent.left + // The offsetParent's offset without borders (offset + border)
( this.cssPosition === "fixed" ? -this.offset.scroll.left : ( scrollIsRootNode ? 0 : this.offset.scroll.left ) )
)
};
},
_clear: function() {
this.helper.removeClass("ui-draggable-dragging");
if (this.helper[0] !== this.element[0] && !this.cancelHelperRemoval) {
this.helper.remove();
}
this.helper = null;
this.cancelHelperRemoval = false;
if ( this.destroyOnClear ) {
this.destroy();
}
},
_normalizeRightBottom: function() {
if ( this.options.axis !== "y" && this.helper.css( "right" ) !== "auto" ) {
this.helper.width( this.helper.width() );
this.helper.css( "right", "auto" );
}
if ( this.options.axis !== "x" && this.helper.css( "bottom" ) !== "auto" ) {
this.helper.height( this.helper.height() );
this.helper.css( "bottom", "auto" );
}
},
// From now on bulk stuff - mainly helpers
_trigger: function( type, event, ui ) {
ui = ui || this._uiHash();
$.ui.plugin.call( this, type, [ event, ui, this ], true );
// Absolute position and offset (see #6884 ) have to be recalculated after plugins
if ( /^(drag|start|stop)/.test( type ) ) {
this.positionAbs = this._convertPositionTo( "absolute" );
ui.offset = this.positionAbs;
}
return $.Widget.prototype._trigger.call( this, type, event, ui );
},
plugins: {},
_uiHash: function() {
return {
helper: this.helper,
position: this.position,
originalPosition: this.originalPosition,
offset: this.positionAbs
};
}
});
$.ui.plugin.add("draggable", "connectToSortable", {
start: function( event, ui, inst ) {
var o = inst.options,
uiSortable = $.extend({}, ui, { item: inst.element });
inst.sortables = [];
$(o.connectToSortable).each(function() {
var sortable = $( this ).sortable( "instance" );
if (sortable && !sortable.options.disabled) {
inst.sortables.push({
instance: sortable
});
sortable.refreshPositions(); // Call the sortable's refreshPositions at drag start to refresh the containerCache since the sortable container cache is used in drag and needs to be up to date (this will ensure it's initialised as well as being kept in step with any changes that might have happened on the page).
sortable._trigger("activate", event, uiSortable);
}
});
},
stop: function( event, ui, inst ) {
//If we are still over the sortable, we fake the stop event of the sortable, but also remove helper
var uiSortable = $.extend( {}, ui, {
item: inst.element
});
inst.cancelHelperRemoval = false;
$.each(inst.sortables, function() {
if (this.instance.isOver) {
this.instance.isOver = 0;
// Allow this sortable to handle removing the helper
inst.cancelHelperRemoval = true;
this.instance.cancelHelperRemoval = false;
// Use _storedCSS To restore properties in the sortable,
// as this also handles revert (#9675) since the draggable
// may have modified them in unexpected ways (#8809)
this.instance._storedCSS = {
position: this.instance.placeholder.css( "position" ),
top: this.instance.placeholder.css( "top" ),
left: this.instance.placeholder.css( "left" )
};
//Trigger the stop of the sortable
this.instance._mouseStop(event);
this.instance.options.helper = this.instance.options._helper;
} else {
// Prevent this Sortable from removing the helper.
// However, don't set the draggable to remove the helper
// either as another connected Sortable may yet handle the removal.
this.instance.cancelHelperRemoval = true;
this.instance._trigger("deactivate", event, uiSortable);
}
});
},
drag: function( event, ui, draggable ) {
$.each( draggable.sortables, function() {
var innermostIntersecting = false,
thisSortable = this,
sortable = this.instance;
// Copy over variables that sortable's _intersectsWith uses
sortable.positionAbs = draggable.positionAbs;
sortable.helperProportions = draggable.helperProportions;
sortable.offset.click = draggable.offset.click;
if ( sortable._intersectsWith( sortable.containerCache ) ) {
innermostIntersecting = true;
$.each( draggable.sortables, function() {
// Copy over variables that sortable's _intersectsWith uses
this.instance.positionAbs = draggable.positionAbs;
this.instance.helperProportions = draggable.helperProportions;
this.instance.offset.click = draggable.offset.click;
if ( this !== thisSortable &&
this.instance._intersectsWith( this.instance.containerCache ) &&
$.contains( sortable.element[ 0 ], this.instance.element[ 0 ] ) ) {
innermostIntersecting = false;
}
return innermostIntersecting;
});
}
if ( innermostIntersecting ) {
// If it intersects, we use a little isOver variable and set it once,
// so that the move-in stuff gets fired only once.
if ( !sortable.isOver ) {
sortable.isOver = 1;
sortable.currentItem = ui.helper
.appendTo( sortable.element )
.data( "ui-sortable-item", true );
// Store helper option to later restore it
sortable.options._helper = sortable.options.helper;
sortable.options.helper = function() {
return ui.helper[ 0 ];
};
// Fire the start event of the sortable with our passed browser event,
// and our own helper (so it doesn't create a new one)
event.target = sortable.currentItem[ 0 ];
sortable._mouseCapture( event, true );
sortable._mouseStart( event, true, true );
// Because the browser event is way off the new appended portlet,
// modify necessary variables to reflect the changes
sortable.offset.click.top = draggable.offset.click.top;
sortable.offset.click.left = draggable.offset.click.left;
sortable.offset.parent.left -= draggable.offset.parent.left -
sortable.offset.parent.left;
sortable.offset.parent.top -= draggable.offset.parent.top -
sortable.offset.parent.top;
draggable._trigger( "toSortable", event );
// draggable revert needs this variable
draggable.dropped = sortable.element;
// hack so receive/update callbacks work (mostly)
draggable.currentItem = draggable.element;
sortable.fromOutside = draggable;
}
if ( sortable.currentItem ) {
sortable._mouseDrag( event );
// Copy the sortable's position because the draggable's can potentially reflect
// a relative position, while sortable is always absolute, which the dragged
// element has now become. (#8809)
ui.position = sortable.position;
}
} else {
// If it doesn't intersect with the sortable, and it intersected before,
// we fake the drag stop of the sortable, but make sure it doesn't remove
// the helper by using cancelHelperRemoval.
if ( sortable.isOver ) {
sortable.isOver = 0;
sortable.cancelHelperRemoval = true;
// Calling sortable's mouseStop would trigger a revert,
// so revert must be temporarily false until after mouseStop is called.
sortable.options._revert = sortable.options.revert;
sortable.options.revert = false;
sortable._trigger( "out", event, sortable._uiHash( sortable ) );
sortable._mouseStop( event, true );
// restore sortable behaviors that were modfied
// when the draggable entered the sortable area (#9481)
sortable.options.revert = sortable.options._revert;
sortable.options.helper = sortable.options._helper;
if ( sortable.placeholder ) {
sortable.placeholder.remove();
}
// Recalculate the draggable's offset considering the sortable
// may have modified them in unexpected ways (#8809)
draggable._refreshOffsets( event );
ui.position = draggable._generatePosition( event, true );
draggable._trigger( "fromSortable", event );
// draggable revert needs that
draggable.dropped = false;
}
}
});
}
});
$.ui.plugin.add("draggable", "cursor", {
start: function( event, ui, instance ) {
var t = $( "body" ),
o = instance.options;
if (t.css("cursor")) {
o._cursor = t.css("cursor");
}
t.css("cursor", o.cursor);
},
stop: function( event, ui, instance ) {
var o = instance.options;
if (o._cursor) {
$("body").css("cursor", o._cursor);
}
}
});
$.ui.plugin.add("draggable", "opacity", {
start: function( event, ui, instance ) {
var t = $( ui.helper ),
o = instance.options;
if (t.css("opacity")) {
o._opacity = t.css("opacity");
}
t.css("opacity", o.opacity);
},
stop: function( event, ui, instance ) {
var o = instance.options;
if (o._opacity) {
$(ui.helper).css("opacity", o._opacity);
}
}
});
$.ui.plugin.add("draggable", "scroll", {
start: function( event, ui, i ) {
if ( !i.scrollParentNotHidden ) {
i.scrollParentNotHidden = i.helper.scrollParent( false );
}
if ( i.scrollParentNotHidden[ 0 ] !== i.document[ 0 ] && i.scrollParentNotHidden[ 0 ].tagName !== "HTML" ) {
i.overflowOffset = i.scrollParentNotHidden.offset();
}
},
drag: function( event, ui, i ) {
var o = i.options,
scrolled = false,
scrollParent = i.scrollParentNotHidden[ 0 ],
document = i.document[ 0 ];
if ( scrollParent !== document && scrollParent.tagName !== "HTML" ) {
if ( !o.axis || o.axis !== "x" ) {
if ( ( i.overflowOffset.top + scrollParent.offsetHeight ) - event.pageY < o.scrollSensitivity ) {
scrollParent.scrollTop = scrolled = scrollParent.scrollTop + o.scrollSpeed;
} else if ( event.pageY - i.overflowOffset.top < o.scrollSensitivity ) {
scrollParent.scrollTop = scrolled = scrollParent.scrollTop - o.scrollSpeed;
}
}
if ( !o.axis || o.axis !== "y" ) {
if ( ( i.overflowOffset.left + scrollParent.offsetWidth ) - event.pageX < o.scrollSensitivity ) {
scrollParent.scrollLeft = scrolled = scrollParent.scrollLeft + o.scrollSpeed;
} else if ( event.pageX - i.overflowOffset.left < o.scrollSensitivity ) {
scrollParent.scrollLeft = scrolled = scrollParent.scrollLeft - o.scrollSpeed;
}
}
} else {
if (!o.axis || o.axis !== "x") {
if (event.pageY - $(document).scrollTop() < o.scrollSensitivity) {
scrolled = $(document).scrollTop($(document).scrollTop() - o.scrollSpeed);
} else if ($(window).height() - (event.pageY - $(document).scrollTop()) < o.scrollSensitivity) {
scrolled = $(document).scrollTop($(document).scrollTop() + o.scrollSpeed);
}
}
if (!o.axis || o.axis !== "y") {
if (event.pageX - $(document).scrollLeft() < o.scrollSensitivity) {
scrolled = $(document).scrollLeft($(document).scrollLeft() - o.scrollSpeed);
} else if ($(window).width() - (event.pageX - $(document).scrollLeft()) < o.scrollSensitivity) {
scrolled = $(document).scrollLeft($(document).scrollLeft() + o.scrollSpeed);
}
}
}
if (scrolled !== false && $.ui.ddmanager && !o.dropBehaviour) {
$.ui.ddmanager.prepareOffsets(i, event);
}
}
});
$.ui.plugin.add("draggable", "snap", {
start: function( event, ui, i ) {
var o = i.options;
i.snapElements = [];
$(o.snap.constructor !== String ? ( o.snap.items || ":data(ui-draggable)" ) : o.snap).each(function() {
var $t = $(this),
$o = $t.offset();
if (this !== i.element[0]) {
i.snapElements.push({
item: this,
width: $t.outerWidth(), height: $t.outerHeight(),
top: $o.top, left: $o.left