Merge branch 't/10887' into major

CHANGES.md

@@ -48,6 +48,7 @@ Fixed Issues:
 * [#10911](http://dev.ckeditor.com/ticket/10911): Browser alt hotkeys will no longer be blocked while widget is focused.
 * [#11082](http://dev.ckeditor.com/ticket/11082): Selected widget is not copied/cut when using toolbar buttons or context menu.
 * [#11083](http://dev.ckeditor.com/ticket/11083): Fixed lists and divs application to block widgets.
+* [#10887](http://dev.ckeditor.com/ticket/10887): Internet Explorer 8 compatibility issues related to the Widget System.
 
 ## CKEditor 4.3 Beta
 

core/htmldataprocessor.js

@@ -545,7 +545,11 @@
 		attributeNames: [
 			// Event attributes (onXYZ) must not be directly set. They can become
 			// active in the editing area (IE|WebKit).
-			[ ( /^on/ ), 'data-cke-pa-on' ]
+			[ ( /^on/ ), 'data-cke-pa-on' ],
+
+			// Don't let some old expando enter editor. Concerns only IE8,
+			// but for consistency remove on all browsers.
+			[ ( /^data-cke-expando$/ ), '' ]
 		]
 	};
 

plugins/clipboard/plugin.js

@@ -683,7 +683,10 @@
 			var pastebin = new CKEDITOR.dom.element(
 				( CKEDITOR.env.webkit || editable.is( 'body' ) ) && !( CKEDITOR.env.ie || CKEDITOR.env.opera ) ? 'body' : 'div', doc );
 
-			pastebin.setAttribute( 'id', 'cke_pastebin' );
+			pastebin.setAttributes( {
+				id: 'cke_pastebin',
+				'data-cke-temp': '1'
+			} );
 
 			// Append bogus to prevent Opera from doing this. (#9522)
 			if ( CKEDITOR.env.opera )

plugins/forms/plugin.js

@@ -242,8 +242,10 @@ CKEDITOR.plugins.add( 'forms', {
 			dataFilter = dataProcessor && dataProcessor.dataFilter;
 
 		// Cleanup certain IE form elements default values.
+		// Note: Inputs are marked with contenteditable=false flags, so filters for them
+		// need to be applied to non-editable content as well.
 		if ( CKEDITOR.env.ie ) {
-			htmlFilter && htmlFilter.addRules({
+			htmlFilter && htmlFilter.addRules( {
 				elements: {
 					input: function( input ) {
 						var attrs = input.attributes,
@@ -255,18 +257,18 @@ CKEDITOR.plugins.add( 'forms', {
 							attrs.value == 'on' && delete attrs.value;
 					}
 				}
-			});
+			}, { applyToAll: true } );
 		}
 
 		if ( dataFilter ) {
-			dataFilter.addRules({
+			dataFilter.addRules( {
 				elements: {
 					input: function( element ) {
 						if ( element.attributes.type == 'hidden' )
 							return editor.createFakeParserElement( element, 'cke_hidden', 'hiddenfield' );
 					}
 				}
-			});
+			}, { applyToAll: true } );
 		}
 	}
 });

plugins/image2/plugin.js

@@ -597,7 +597,7 @@
 		if ( childName != 'img' && !( childName == 'figure' && child.hasClass( 'caption' ) ) )
 			return false;
 
-		var styles = CKEDITOR.tools.parseCssText( el.attributes.style || '' );
+		var styles = CKEDITOR.tools.parseCssText( el.attributes.style || '', true );
 
 		// Centering wrapper got to be... centering.
 		if ( styles[ 'text-align' ] == 'center' )

plugins/widget/plugin.js

@@ -293,7 +293,9 @@
 			for ( i = 0, count = wrappers.count(); i < count; i++ ) {
 				wrapper = wrappers.getItem( i );
 
-				if ( !this.getByElement( wrapper, true ) ) {
+				// Check if there's no instance for this widget and that
+				// wrapper is not inside some temporary element like copybin (#11088).
+				if ( !this.getByElement( wrapper, true ) && !findParent( wrapper, isTemp2 ) ) {
 					// Add cke_widget_new class because otherwise
 					// widget will not be created on such wrapper.
 					wrapper.addClass( 'cke_widget_new' );
@@ -1542,6 +1544,20 @@
 		return filter;
 	}
 
+	// Finds a first parent that matches query.
+	//
+	// @param {CKEDITOR.dom.element} element
+	// @param {Function} query
+	function findParent( element, query ) {
+		var parent = element;
+
+		while ( ( parent = parent.getParent() ) ) {
+			if ( query( parent ) )
+				return true;
+		}
+		return false;
+	}
+
 	// Gets nested editable if node is its descendant or the editable itself.
 	//
 	// @param {CKEDITOR.dom.element} guard Stop ancestor search on this node (usually editor's editable).
@@ -1639,6 +1655,11 @@
 		return node.type == CKEDITOR.NODE_ELEMENT && node.hasAttribute( 'data-cke-widget-editable' );
 	}
 
+	// @param {CKEDITOR.dom.element}
+	function isTemp2( element ) {
+		return element.hasAttribute( 'data-cke-temp' );
+	}
+
 	function moveSelectionToDropPosition( editor, dropEvt ) {
 		var $evt = dropEvt.data.$,
 			$range,
@@ -1770,14 +1791,20 @@
 	// * We use spans on IE and blockless editors, but divs in other cases.
 	var pasteReplaceRegex = new RegExp(
 		'^' +
-		'(?:<(?:div|span)(?: id="cke_copybin")?>)?' +
+		'(?:<(?:div|span)(?: data-cke-temp="1")?(?: id="cke_copybin")?(?: data-cke-temp="1")?>)?' +
 			'(?:<(?:div|span)(?: style="[^"]+")?>)?' +
 				'<span [^>]*data-cke-copybin-start="1"[^>]*>.?</span>([\\s\\S]+)<span [^>]*data-cke-copybin-end="1"[^>]*>.?</span>' +
 			'(?:</(?:div|span)>)?' +
 		'(?:</(?:div|span)>)?' +
 		'$'
 	);
 
+	function pasteReplaceFn( match, wrapperHtml ) {
+		// Avoid polluting pasted data with any whitspaces,
+		// what's going to break check whether only one widget was pasted.
+		return CKEDITOR.tools.trim( wrapperHtml );
+	}
+
 	// Set up data processing like:
 	// * toHtml/toDataFormat,
 	// * pasting handling,
@@ -1794,10 +1821,7 @@
 
 		// Handle pasted single widget.
 		editor.on( 'paste', function( evt ) {
-			evt.data.dataValue = evt.data.dataValue.replace(
-				pasteReplaceRegex,
-				'$1'
-			);
+			evt.data.dataValue = evt.data.dataValue.replace( pasteReplaceRegex, pasteReplaceFn );
 		} );
 	}
 
@@ -1980,6 +2004,10 @@
 			editable.attachListener( evtRoot, 'mousedown', function( evt ) {
 				var target = evt.data.getTarget();
 
+				// #10887 Clicking scrollbar in IE8 will invoke event with empty target object.
+				if ( !target.type )
+					return false;
+
 				widget = widgetsRepo.getByElement( target );
 				mouseDownOnDragHandler = 0; // Reset.
 
@@ -2359,7 +2387,10 @@
 			// IE8 always jumps to the end of document.
 			needsScrollHack = CKEDITOR.env.ie && CKEDITOR.env.version < 9;
 
-		copybinContainer.setAttribute( 'id', 'cke_copybin' );
+		copybinContainer.setAttributes( {
+			id: 'cke_copybin',
+			'data-cke-temp': '1'
+		} );
 
 		// Position copybin element outside current viewport.
 		copybin.setStyles( {