1 /*
  2 Copyright (c) 2003-2012, CKSource - Frederico Knabben. All rights reserved.
  3 For licensing, see LICENSE.html or http://ckeditor.com/license
  4 */
  5 
  6 CKEDITOR.plugins.add( 'styles',
  7 {
  8 	requires : [ 'selection' ],
  9 	init : function( editor )
 10 	{
 11 		// This doesn't look like correct, but it's the safest way to proper
 12 		// pass the disableReadonlyStyling configuration to the style system
 13 		// without having to change any method signature in the API. (#6103)
 14 		editor.on( 'contentDom', function()
 15 			{
 16 				editor.document.setCustomData( 'cke_includeReadonly', !editor.config.disableReadonlyStyling );
 17 			});
 18 	}
 19 });
 20 
 21 /**
 22  * Registers a function to be called whenever the selection position changes in the
 23  * editing area. The current state is passed to the function. The possible
 24  * states are {@link CKEDITOR.TRISTATE_ON} and {@link CKEDITOR.TRISTATE_OFF}.
 25  * @param {CKEDITOR.style} style The style to be watched.
 26  * @param {Function} callback The function to be called.
 27  * @example
 28  * // Create a style object for the <b> element.
 29  * var style = new CKEDITOR.style( { element : 'b' } );
 30  * var editor = CKEDITOR.instances.editor1;
 31  * editor.attachStyleStateChange( style, function( state )
 32  *     {
 33  *         if ( state == CKEDITOR.TRISTATE_ON )
 34  *             alert( 'The current state for the B element is ON' );
 35  *         else
 36  *             alert( 'The current state for the B element is OFF' );
 37  *     });
 38  */
 39 CKEDITOR.editor.prototype.attachStyleStateChange = function( style, callback )
 40 {
 41 	// Try to get the list of attached callbacks.
 42 	var styleStateChangeCallbacks = this._.styleStateChangeCallbacks;
 43 
 44 	// If it doesn't exist, it means this is the first call. So, let's create
 45 	// all the structure to manage the style checks and the callback calls.
 46 	if ( !styleStateChangeCallbacks )
 47 	{
 48 		// Create the callbacks array.
 49 		styleStateChangeCallbacks = this._.styleStateChangeCallbacks = [];
 50 
 51 		// Attach to the selectionChange event, so we can check the styles at
 52 		// that point.
 53 		this.on( 'selectionChange', function( ev )
 54 			{
 55 				// Loop throw all registered callbacks.
 56 				for ( var i = 0 ; i < styleStateChangeCallbacks.length ; i++ )
 57 				{
 58 					var callback = styleStateChangeCallbacks[ i ];
 59 
 60 					// Check the current state for the style defined for that
 61 					// callback.
 62 					var currentState = callback.style.checkActive( ev.data.path ) ? CKEDITOR.TRISTATE_ON : CKEDITOR.TRISTATE_OFF;
 63 
 64 					// Call the callback function, passing the current
 65 					// state to it.
 66 					callback.fn.call( this, currentState );
 67 				}
 68 			});
 69 	}
 70 
 71 	// Save the callback info, so it can be checked on the next occurrence of
 72 	// selectionChange.
 73 	styleStateChangeCallbacks.push( { style : style, fn : callback } );
 74 };
 75 
 76 CKEDITOR.STYLE_BLOCK = 1;
 77 CKEDITOR.STYLE_INLINE = 2;
 78 CKEDITOR.STYLE_OBJECT = 3;
 79 
 80 (function()
 81 {
 82 	var blockElements	= { address:1,div:1,h1:1,h2:1,h3:1,h4:1,h5:1,h6:1,p:1,pre:1,section:1,header:1,footer:1,nav:1,article:1,aside:1,figure:1,dialog:1,hgroup:1,time:1,meter:1,menu:1,command:1,keygen:1,output:1,progress:1,details:1,datagrid:1,datalist:1 },
 83 		objectElements	= { a:1,embed:1,hr:1,img:1,li:1,object:1,ol:1,table:1,td:1,tr:1,th:1,ul:1,dl:1,dt:1,dd:1,form:1,audio:1,video:1 };
 84 
 85 	var semicolonFixRegex = /\s*(?:;\s*|$)/,
 86 		varRegex = /#\((.+?)\)/g;
 87 
 88 	var notBookmark = CKEDITOR.dom.walker.bookmark( 0, 1 ),
 89 		nonWhitespaces = CKEDITOR.dom.walker.whitespaces( 1 );
 90 
 91 	CKEDITOR.style = function( styleDefinition, variablesValues )
 92 	{
 93 		// Inline style text as attribute should be converted
 94 		// to styles object.
 95 		var attrs = styleDefinition.attributes;
 96 		if ( attrs && attrs.style )
 97 		{
 98 			styleDefinition.styles = CKEDITOR.tools.extend( {},
 99 				styleDefinition.styles, parseStyleText( attrs.style ) );
100 			delete attrs.style;
101 		}
102 
103 		if ( variablesValues )
104 		{
105 			styleDefinition = CKEDITOR.tools.clone( styleDefinition );
106 
107 			replaceVariables( styleDefinition.attributes, variablesValues );
108 			replaceVariables( styleDefinition.styles, variablesValues );
109 		}
110 
111 		var element = this.element = styleDefinition.element ?
112 				( typeof styleDefinition.element == 'string' ? styleDefinition.element.toLowerCase() : styleDefinition.element )
113 				: '*';
114 
115 		this.type =
116 			blockElements[ element ] ?
117 				CKEDITOR.STYLE_BLOCK
118 			: objectElements[ element ] ?
119 				CKEDITOR.STYLE_OBJECT
120 			:
121 				CKEDITOR.STYLE_INLINE;
122 
123 		// If the 'element' property is an object with a set of possible element, it will be applied like an object style: only to existing elements
124 		if ( typeof this.element == 'object' )
125 			this.type = CKEDITOR.STYLE_OBJECT;
126 
127 		this._ =
128 		{
129 			definition : styleDefinition
130 		};
131 	};
132 
133 	CKEDITOR.style.prototype =
134 	{
135 		apply : function( document )
136 		{
137 			applyStyle.call( this, document, false );
138 		},
139 
140 		remove : function( document )
141 		{
142 			applyStyle.call( this, document, true );
143 		},
144 
145 		applyToRange : function( range )
146 		{
147 			return ( this.applyToRange =
148 						this.type == CKEDITOR.STYLE_INLINE ?
149 							applyInlineStyle
150 						: this.type == CKEDITOR.STYLE_BLOCK ?
151 							applyBlockStyle
152 						: this.type == CKEDITOR.STYLE_OBJECT ?
153 							applyObjectStyle
154 						: null ).call( this, range );
155 		},
156 
157 		removeFromRange : function( range )
158 		{
159 			return ( this.removeFromRange =
160 						this.type == CKEDITOR.STYLE_INLINE ?
161 							removeInlineStyle
162 						: this.type == CKEDITOR.STYLE_BLOCK ?
163 							removeBlockStyle
164 						: this.type == CKEDITOR.STYLE_OBJECT ?
165 							removeObjectStyle
166 						: null ).call( this, range );
167 		},
168 
169 		applyToObject : function( element )
170 		{
171 			setupElement( element, this );
172 		},
173 
174 		/**
175 		 * Get the style state inside an element path. Returns "true" if the
176 		 * element is active in the path.
177 		 */
178 		checkActive : function( elementPath )
179 		{
180 			switch ( this.type )
181 			{
182 				case CKEDITOR.STYLE_BLOCK :
183 					return this.checkElementRemovable( elementPath.block || elementPath.blockLimit, true );
184 
185 				case CKEDITOR.STYLE_OBJECT :
186 				case CKEDITOR.STYLE_INLINE :
187 
188 					var elements = elementPath.elements;
189 
190 					for ( var i = 0, element ; i < elements.length ; i++ )
191 					{
192 						element = elements[ i ];
193 
194 						if ( this.type == CKEDITOR.STYLE_INLINE
195 							  && ( element == elementPath.block || element == elementPath.blockLimit ) )
196 							continue;
197 
198 						if( this.type == CKEDITOR.STYLE_OBJECT )
199 						{
200 							var name = element.getName();
201 							if ( !( typeof this.element == 'string' ? name == this.element : name in this.element ) )
202 								continue;
203 						}
204 
205 						if ( this.checkElementRemovable( element, true ) )
206 							return true;
207 					}
208 			}
209 			return false;
210 		},
211 
212 		/**
213 		 * Whether this style can be applied at the element path.
214  		 * @param elementPath
215 		 */
216 		checkApplicable : function( elementPath )
217 		{
218 			switch ( this.type )
219 			{
220 				case CKEDITOR.STYLE_INLINE :
221 				case CKEDITOR.STYLE_BLOCK :
222 					break;
223 
224 				case CKEDITOR.STYLE_OBJECT :
225 					return elementPath.lastElement.getAscendant( this.element, true );
226 			}
227 
228 			return true;
229 		},
230 
231 		// Check if the element matches the current style definition.
232 		checkElementMatch : function( element, fullMatch )
233 		{
234 			var def = this._.definition;
235 
236 			if ( !element || !def.ignoreReadonly && element.isReadOnly() )
237 				return false;
238 
239 			var attribs,
240 				name = element.getName();
241 
242 			// If the element name is the same as the style name.
243 			if ( typeof this.element == 'string' ? name == this.element : name in this.element )
244 			{
245 				// If no attributes are defined in the element.
246 				if ( !fullMatch && !element.hasAttributes() )
247 					return true;
248 
249 				attribs = getAttributesForComparison( def );
250 
251 				if ( attribs._length )
252 				{
253 					for ( var attName in attribs )
254 					{
255 						if ( attName == '_length' )
256 							continue;
257 
258 						var elementAttr = element.getAttribute( attName ) || '';
259 
260 						// Special treatment for 'style' attribute is required.
261 						if ( attName == 'style' ?
262 							compareCssText( attribs[ attName ], normalizeCssText( elementAttr, false ) )
263 							: attribs[ attName ] == elementAttr  )
264 						{
265 							if ( !fullMatch )
266 								return true;
267 						}
268 						else if ( fullMatch )
269 								return false;
270 					}
271 					if ( fullMatch )
272 						return true;
273 				}
274 				else
275 					return true;
276 			}
277 
278 			return false;
279 		},
280 
281 		// Checks if an element, or any of its attributes, is removable by the
282 		// current style definition.
283 		checkElementRemovable : function( element, fullMatch )
284 		{
285 			// Check element matches the style itself.
286 			if ( this.checkElementMatch( element, fullMatch ) )
287 				return true;
288 
289 			// Check if the element matches the style overrides.
290 			var override = getOverrides( this )[ element.getName() ] ;
291 			if ( override )
292 			{
293 				var attribs, attName;
294 
295 				// If no attributes have been defined, remove the element.
296 				if ( !( attribs = override.attributes ) )
297 					return true;
298 
299 				for ( var i = 0 ; i < attribs.length ; i++ )
300 				{
301 					attName = attribs[i][0];
302 					var actualAttrValue = element.getAttribute( attName );
303 					if ( actualAttrValue )
304 					{
305 						var attValue = attribs[i][1];
306 
307 						// Remove the attribute if:
308 						//    - The override definition value is null;
309 						//    - The override definition value is a string that
310 						//      matches the attribute value exactly.
311 						//    - The override definition value is a regex that
312 						//      has matches in the attribute value.
313 						if ( attValue === null ||
314 								( typeof attValue == 'string' && actualAttrValue == attValue ) ||
315 								attValue.test( actualAttrValue ) )
316 							return true;
317 					}
318 				}
319 			}
320 			return false;
321 		},
322 
323 		// Builds the preview HTML based on the styles definition.
324 		buildPreview : function( label )
325 		{
326 			var styleDefinition = this._.definition,
327 				html = [],
328 				elementName = styleDefinition.element;
329 
330 			// Avoid <bdo> in the preview.
331 			if ( elementName == 'bdo' )
332 				elementName = 'span';
333 
334 			html = [ '<', elementName ];
335 
336 			// Assign all defined attributes.
337 			var attribs	= styleDefinition.attributes;
338 			if ( attribs )
339 			{
340 				for ( var att in attribs )
341 				{
342 					html.push( ' ', att, '="', attribs[ att ], '"' );
343 				}
344 			}
345 
346 			// Assign the style attribute.
347 			var cssStyle = CKEDITOR.style.getStyleText( styleDefinition );
348 			if ( cssStyle )
349 				html.push( ' style="', cssStyle, '"' );
350 
351 			html.push( '>', ( label || styleDefinition.name ), '</', elementName, '>' );
352 
353 			return html.join( '' );
354 		}
355 	};
356 
357 	// Build the cssText based on the styles definition.
358 	CKEDITOR.style.getStyleText = function( styleDefinition )
359 	{
360 		// If we have already computed it, just return it.
361 		var stylesDef = styleDefinition._ST;
362 		if ( stylesDef )
363 			return stylesDef;
364 
365 		stylesDef = styleDefinition.styles;
366 
367 		// Builds the StyleText.
368 		var stylesText = ( styleDefinition.attributes && styleDefinition.attributes[ 'style' ] ) || '',
369 				specialStylesText = '';
370 
371 		if ( stylesText.length )
372 			stylesText = stylesText.replace( semicolonFixRegex, ';' );
373 
374 		for ( var style in stylesDef )
375 		{
376 			var styleVal = stylesDef[ style ],
377 					text = ( style + ':' + styleVal ).replace( semicolonFixRegex, ';' );
378 
379 			// Some browsers don't support 'inherit' property value, leave them intact. (#5242)
380 			if ( styleVal == 'inherit' )
381 				specialStylesText += text;
382 			else
383 				stylesText += text;
384 		}
385 
386 		// Browsers make some changes to the style when applying them. So, here
387 		// we normalize it to the browser format.
388 		if ( stylesText.length )
389 			stylesText = normalizeCssText( stylesText );
390 
391 		stylesText += specialStylesText;
392 
393 		// Return it, saving it to the next request.
394 		return ( styleDefinition._ST = stylesText );
395 	};
396 
397 	// Gets the parent element which blocks the styling for an element. This
398 	// can be done through read-only elements (contenteditable=false) or
399 	// elements with the "data-nostyle" attribute.
400 	function getUnstylableParent( element )
401 	{
402 		var unstylable,
403 			editable;
404 
405 		while ( ( element = element.getParent() ) )
406 		{
407 			if ( element.getName() == 'body' )
408 				break;
409 
410 			if ( element.getAttribute( 'data-nostyle' ) )
411 				unstylable = element;
412 			else if ( !editable )
413 			{
414 				var contentEditable = element.getAttribute( 'contentEditable' );
415 
416 				if ( contentEditable == 'false' )
417 					unstylable = element;
418 				else if ( contentEditable == 'true' )
419 					editable = 1;
420 			}
421 		}
422 
423 		return unstylable;
424 	}
425 
426 	function applyInlineStyle( range )
427 	{
428 		var document = range.document;
429 
430 		if ( range.collapsed )
431 		{
432 			// Create the element to be inserted in the DOM.
433 			var collapsedElement = getElement( this, document );
434 
435 			// Insert the empty element into the DOM at the range position.
436 			range.insertNode( collapsedElement );
437 
438 			// Place the selection right inside the empty element.
439 			range.moveToPosition( collapsedElement, CKEDITOR.POSITION_BEFORE_END );
440 
441 			return;
442 		}
443 
444 		var elementName = this.element;
445 		var def = this._.definition;
446 		var isUnknownElement;
447 
448 		// Indicates that fully selected read-only elements are to be included in the styling range.
449 		var ignoreReadonly = def.ignoreReadonly,
450 			includeReadonly = ignoreReadonly || def.includeReadonly;
451 
452 		// If the read-only inclusion is not available in the definition, try
453 		// to get it from the document data.
454 		if ( includeReadonly == undefined )
455 			includeReadonly = document.getCustomData( 'cke_includeReadonly' );
456 
457 		// Get the DTD definition for the element. Defaults to "span".
458 		var dtd = CKEDITOR.dtd[ elementName ] || ( isUnknownElement = true, CKEDITOR.dtd.span );
459 
460 		// Expand the range.
461 		range.enlarge( CKEDITOR.ENLARGE_ELEMENT, 1 );
462 		range.trim();
463 
464 		// Get the first node to be processed and the last, which concludes the
465 		// processing.
466 		var boundaryNodes = range.createBookmark(),
467 			firstNode = boundaryNodes.startNode,
468 			lastNode = boundaryNodes.endNode;
469 
470 		var currentNode = firstNode;
471 
472 		var styleRange;
473 
474 		if ( !ignoreReadonly )
475 		{
476 			// Check if the boundaries are inside non stylable elements.
477 			var firstUnstylable = getUnstylableParent( firstNode ),
478 					lastUnstylable = getUnstylableParent( lastNode );
479 
480 			// If the first element can't be styled, we'll start processing right
481 			// after its unstylable root.
482 			if ( firstUnstylable )
483 				currentNode = firstUnstylable.getNextSourceNode( true );
484 
485 			// If the last element can't be styled, we'll stop processing on its
486 			// unstylable root.
487 			if ( lastUnstylable )
488 				lastNode = lastUnstylable;
489 		}
490 
491 		// Do nothing if the current node now follows the last node to be processed.
492 		if ( currentNode.getPosition( lastNode ) == CKEDITOR.POSITION_FOLLOWING )
493 			currentNode = 0;
494 
495 		while ( currentNode )
496 		{
497 			var applyStyle = false;
498 
499 			if ( currentNode.equals( lastNode ) )
500 			{
501 				currentNode = null;
502 				applyStyle = true;
503 			}
504 			else
505 			{
506 				var nodeType = currentNode.type;
507 				var nodeName = nodeType == CKEDITOR.NODE_ELEMENT ? currentNode.getName() : null;
508 				var nodeIsReadonly = nodeName && ( currentNode.getAttribute( 'contentEditable' ) == 'false' );
509 				var nodeIsNoStyle = nodeName && currentNode.getAttribute( 'data-nostyle' );
510 
511 				if ( nodeName && currentNode.data( 'cke-bookmark' ) )
512 				{
513 					currentNode = currentNode.getNextSourceNode( true );
514 					continue;
515 				}
516 
517 				// Check if the current node can be a child of the style element.
518 				if ( !nodeName || ( dtd[ nodeName ]
519 					&& !nodeIsNoStyle
520 					&& ( !nodeIsReadonly || includeReadonly )
521 					&& ( currentNode.getPosition( lastNode ) | CKEDITOR.POSITION_PRECEDING | CKEDITOR.POSITION_IDENTICAL | CKEDITOR.POSITION_IS_CONTAINED ) == ( CKEDITOR.POSITION_PRECEDING + CKEDITOR.POSITION_IDENTICAL + CKEDITOR.POSITION_IS_CONTAINED )
522 					&& ( !def.childRule || def.childRule( currentNode ) ) ) )
523 				{
524 					var currentParent = currentNode.getParent();
525 
526 					// Check if the style element can be a child of the current
527 					// node parent or if the element is not defined in the DTD.
528 					if ( currentParent
529 						&& ( ( currentParent.getDtd() || CKEDITOR.dtd.span )[ elementName ] || isUnknownElement )
530 						&& ( !def.parentRule || def.parentRule( currentParent ) ) )
531 					{
532 						// This node will be part of our range, so if it has not
533 						// been started, place its start right before the node.
534 						// In the case of an element node, it will be included
535 						// only if it is entirely inside the range.
536 						if ( !styleRange && ( !nodeName || !CKEDITOR.dtd.$removeEmpty[ nodeName ] || ( currentNode.getPosition( lastNode ) | CKEDITOR.POSITION_PRECEDING | CKEDITOR.POSITION_IDENTICAL | CKEDITOR.POSITION_IS_CONTAINED ) == ( CKEDITOR.POSITION_PRECEDING + CKEDITOR.POSITION_IDENTICAL + CKEDITOR.POSITION_IS_CONTAINED ) ) )
537 						{
538 							styleRange = new CKEDITOR.dom.range( document );
539 							styleRange.setStartBefore( currentNode );
540 						}
541 
542 						// Non element nodes, readonly elements, or empty
543 						// elements can be added completely to the range.
544 						if ( nodeType == CKEDITOR.NODE_TEXT || nodeIsReadonly || ( nodeType == CKEDITOR.NODE_ELEMENT && !currentNode.getChildCount() ) )
545 						{
546 							var includedNode = currentNode;
547 							var parentNode;
548 
549 							// This node is about to be included completelly, but,
550 							// if this is the last node in its parent, we must also
551 							// check if the parent itself can be added completelly
552 							// to the range, otherwise apply the style immediately.
553 							while ( ( applyStyle = !includedNode.getNext( notBookmark ) )
554 								&& ( parentNode = includedNode.getParent(), dtd[ parentNode.getName() ] )
555 								&& ( parentNode.getPosition( firstNode ) | CKEDITOR.POSITION_FOLLOWING | CKEDITOR.POSITION_IDENTICAL | CKEDITOR.POSITION_IS_CONTAINED ) == ( CKEDITOR.POSITION_FOLLOWING + CKEDITOR.POSITION_IDENTICAL + CKEDITOR.POSITION_IS_CONTAINED )
556 								&& ( !def.childRule || def.childRule( parentNode ) ) )
557 							{
558 								includedNode = parentNode;
559 							}
560 
561 							styleRange.setEndAfter( includedNode );
562 
563 						}
564 					}
565 					else
566 						applyStyle = true;
567 				}
568 				else
569 					applyStyle = true;
570 
571 				// Get the next node to be processed.
572 				currentNode = currentNode.getNextSourceNode( nodeIsNoStyle || nodeIsReadonly );
573 			}
574 
575 			// Apply the style if we have something to which apply it.
576 			if ( applyStyle && styleRange && !styleRange.collapsed )
577 			{
578 				// Build the style element, based on the style object definition.
579 				var styleNode = getElement( this, document ),
580 					styleHasAttrs = styleNode.hasAttributes();
581 
582 				// Get the element that holds the entire range.
583 				var parent = styleRange.getCommonAncestor();
584 
585 				var removeList = {
586 					styles : {},
587 					attrs : {},
588 					// Styles cannot be removed.
589 					blockedStyles : {},
590 					// Attrs cannot be removed.
591 					blockedAttrs : {}
592 				};
593 
594 				var attName, styleName, value;
595 
596 				// Loop through the parents, removing the redundant attributes
597 				// from the element to be applied.
598 				while ( styleNode && parent )
599 				{
600 					if ( parent.getName() == elementName )
601 					{
602 						for ( attName in def.attributes )
603 						{
604 							if ( removeList.blockedAttrs[ attName ] || !( value = parent.getAttribute( styleName ) ) )
605 								continue;
606 
607 							if ( styleNode.getAttribute( attName ) == value )
608 								removeList.attrs[ attName ] = 1;
609 							else
610 								removeList.blockedAttrs[ attName ] = 1;
611 						}
612 
613 						for ( styleName in def.styles )
614 						{
615 							if ( removeList.blockedStyles[ styleName ] || !( value = parent.getStyle( styleName ) ) )
616 								continue;
617 
618 							if ( styleNode.getStyle( styleName ) == value )
619 								removeList.styles[ styleName ] = 1;
620 							else
621 								removeList.blockedStyles[ styleName ] = 1;
622 						}
623 					}
624 
625 					parent = parent.getParent();
626 				}
627 
628 				for ( attName in removeList.attrs )
629 					styleNode.removeAttribute( attName );
630 
631 				for ( styleName in removeList.styles )
632 					styleNode.removeStyle( styleName );
633 
634 				if ( styleHasAttrs && !styleNode.hasAttributes() )
635 					styleNode = null;
636 
637 				if ( styleNode )
638 				{
639 					// Move the contents of the range to the style element.
640 					styleRange.extractContents().appendTo( styleNode );
641 
642 					// Here we do some cleanup, removing all duplicated
643 					// elements from the style element.
644 					removeFromInsideElement( this, styleNode );
645 
646 					// Insert it into the range position (it is collapsed after
647 					// extractContents.
648 					styleRange.insertNode( styleNode );
649 
650 					// Let's merge our new style with its neighbors, if possible.
651 					styleNode.mergeSiblings();
652 
653 					// As the style system breaks text nodes constantly, let's normalize
654 					// things for performance.
655 					// With IE, some paragraphs get broken when calling normalize()
656 					// repeatedly. Also, for IE, we must normalize body, not documentElement.
657 					// IE is also known for having a "crash effect" with normalize().
658 					// We should try to normalize with IE too in some way, somewhere.
659 					if ( !CKEDITOR.env.ie )
660 						styleNode.$.normalize();
661 				}
662 				// Style already inherit from parents, left just to clear up any internal overrides. (#5931)
663 				else
664 				{
665 					styleNode = new CKEDITOR.dom.element( 'span' );
666 					styleRange.extractContents().appendTo( styleNode );
667 					styleRange.insertNode( styleNode );
668 					removeFromInsideElement( this, styleNode );
669 					styleNode.remove( true );
670 				}
671 
672 				// Style applied, let's release the range, so it gets
673 				// re-initialization in the next loop.
674 				styleRange = null;
675 			}
676 		}
677 
678 		// Remove the bookmark nodes.
679 		range.moveToBookmark( boundaryNodes );
680 
681 		// Minimize the result range to exclude empty text nodes. (#5374)
682 		range.shrink( CKEDITOR.SHRINK_TEXT );
683 	}
684 
685 	function removeInlineStyle( range )
686 	{
687 		/*
688 		 * Make sure our range has included all "collpased" parent inline nodes so
689 		 * that our operation logic can be simpler.
690 		 */
691 		range.enlarge( CKEDITOR.ENLARGE_ELEMENT, 1 );
692 
693 		var bookmark = range.createBookmark(),
694 			startNode = bookmark.startNode;
695 
696 		if ( range.collapsed )
697 		{
698 
699 			var startPath = new CKEDITOR.dom.elementPath( startNode.getParent() ),
700 				// The topmost element in elementspatch which we should jump out of.
701 				boundaryElement;
702 
703 
704 			for ( var i = 0, element ; i < startPath.elements.length
705 					&& ( element = startPath.elements[i] ) ; i++ )
706 			{
707 				/*
708 				 * 1. If it's collaped inside text nodes, try to remove the style from the whole element.
709 				 *
710 				 * 2. Otherwise if it's collapsed on element boundaries, moving the selection
711 				 *  outside the styles instead of removing the whole tag,
712 				 *  also make sure other inner styles were well preserverd.(#3309)
713 				 */
714 				if ( element == startPath.block || element == startPath.blockLimit )
715 					break;
716 
717 				if ( this.checkElementRemovable( element ) )
718 				{
719 					var isStart;
720 
721 					if ( range.collapsed && (
722 						 range.checkBoundaryOfElement( element, CKEDITOR.END ) ||
723 						 ( isStart = range.checkBoundaryOfElement( element, CKEDITOR.START ) ) ) )
724 					{
725 						boundaryElement = element;
726 						boundaryElement.match = isStart ? 'start' : 'end';
727 					}
728 					else
729 					{
730 						/*
731 						 * Before removing the style node, there may be a sibling to the style node
732 						 * that's exactly the same to the one to be removed. To the user, it makes
733 						 * no difference that they're separate entities in the DOM tree. So, merge
734 						 * them before removal.
735 						 */
736 						element.mergeSiblings();
737 						if ( element.getName() == this.element )
738 							removeFromElement( this, element );
739 						else
740 							removeOverrides( element, getOverrides( this )[ element.getName() ] );
741 					}
742 				}
743 			}
744 
745 			// Re-create the style tree after/before the boundary element,
746 			// the replication start from bookmark start node to define the
747 			// new range.
748 			if ( boundaryElement )
749 			{
750 				var clonedElement = startNode;
751 				for ( i = 0 ;; i++ )
752 				{
753 					var newElement = startPath.elements[ i ];
754 					if ( newElement.equals( boundaryElement ) )
755 						break;
756 					// Avoid copying any matched element.
757 					else if ( newElement.match )
758 						continue;
759 					else
760 						newElement = newElement.clone();
761 					newElement.append( clonedElement );
762 					clonedElement = newElement;
763 				}
764 				clonedElement[ boundaryElement.match == 'start' ?
765 							'insertBefore' : 'insertAfter' ]( boundaryElement );
766 			}
767 		}
768 		else
769 		{
770 			/*
771 			 * Now our range isn't collapsed. Lets walk from the start node to the end
772 			 * node via DFS and remove the styles one-by-one.
773 			 */
774 			var endNode = bookmark.endNode,
775 				me = this;
776 
777 			/*
778 			 * Find out the style ancestor that needs to be broken down at startNode
779 			 * and endNode.
780 			 */
781 			function breakNodes()
782 			{
783 				var startPath = new CKEDITOR.dom.elementPath( startNode.getParent() ),
784 					endPath = new CKEDITOR.dom.elementPath( endNode.getParent() ),
785 					breakStart = null,
786 					breakEnd = null;
787 				for ( var i = 0 ; i < startPath.elements.length ; i++ )
788 				{
789 					var element = startPath.elements[ i ];
790 
791 					if ( element == startPath.block || element == startPath.blockLimit )
792 						break;
793 
794 					if ( me.checkElementRemovable( element ) )
795 						breakStart = element;
796 				}
797 				for ( i = 0 ; i < endPath.elements.length ; i++ )
798 				{
799 					element = endPath.elements[ i ];
800 
801 					if ( element == endPath.block || element == endPath.blockLimit )
802 						break;
803 
804 					if ( me.checkElementRemovable( element ) )
805 						breakEnd = element;
806 				}
807 
808 				if ( breakEnd )
809 					endNode.breakParent( breakEnd );
810 				if ( breakStart )
811 					startNode.breakParent( breakStart );
812 			}
813 			breakNodes();
814 
815 			// Now, do the DFS walk.
816 			var currentNode = startNode;
817 			while ( !currentNode.equals( endNode ) )
818 			{
819 				/*
820 				 * Need to get the next node first because removeFromElement() can remove
821 				 * the current node from DOM tree.
822 				 */
823 				var nextNode = currentNode.getNextSourceNode();
824 				if ( currentNode.type == CKEDITOR.NODE_ELEMENT && this.checkElementRemovable( currentNode ) )
825 				{
826 					// Remove style from element or overriding element.
827 					if ( currentNode.getName() == this.element )
828 						removeFromElement( this, currentNode );
829 					else
830 						removeOverrides( currentNode, getOverrides( this )[ currentNode.getName() ] );
831 
832 					/*
833 					 * removeFromElement() may have merged the next node with something before
834 					 * the startNode via mergeSiblings(). In that case, the nextNode would
835 					 * contain startNode and we'll have to call breakNodes() again and also
836 					 * reassign the nextNode to something after startNode.
837 					 */
838 					if ( nextNode.type == CKEDITOR.NODE_ELEMENT && nextNode.contains( startNode ) )
839 					{
840 						breakNodes();
841 						nextNode = startNode.getNext();
842 					}
843 				}
844 				currentNode = nextNode;
845 			}
846 		}
847 
848 		range.moveToBookmark( bookmark );
849 	}
850 
851 	function applyObjectStyle( range )
852 	{
853 		var root = range.getCommonAncestor( true, true ),
854 			element = root.getAscendant( this.element, true );
855 		element && !element.isReadOnly() && setupElement( element, this );
856 	}
857 
858 	function removeObjectStyle( range )
859 	{
860 		var root = range.getCommonAncestor( true, true ),
861 			element = root.getAscendant( this.element, true );
862 
863 		if ( !element )
864 			return;
865 
866 		var style = this,
867 			def = style._.definition,
868 			attributes = def.attributes;
869 
870 		// Remove all defined attributes.
871 		if ( attributes )
872 		{
873 			for ( var att in attributes )
874 			{
875 				element.removeAttribute( att, attributes[ att ] );
876 			}
877 		}
878 
879 		// Assign all defined styles.
880 		if ( def.styles )
881 		{
882 			for ( var i in def.styles )
883 			{
884 				if ( !def.styles.hasOwnProperty( i ) )
885 					continue;
886 
887 				element.removeStyle( i );
888 			}
889 		}
890 	}
891 
892 	function applyBlockStyle( range )
893 	{
894 		// Serializible bookmarks is needed here since
895 		// elements may be merged.
896 		var bookmark = range.createBookmark( true );
897 
898 		var iterator = range.createIterator();
899 		iterator.enforceRealBlocks = true;
900 
901 		// make recognize <br /> tag as a separator in ENTER_BR mode (#5121)
902 		if ( this._.enterMode )
903 			iterator.enlargeBr = ( this._.enterMode != CKEDITOR.ENTER_BR );
904 
905 		var block;
906 		var doc = range.document;
907 		var previousPreBlock;
908 
909 		while ( ( block = iterator.getNextParagraph() ) )		// Only one =
910 		{
911 			if ( !block.isReadOnly() )
912 			{
913 				var newBlock = getElement( this, doc, block );
914 				replaceBlock( block, newBlock );
915 			}
916 		}
917 
918 		range.moveToBookmark( bookmark );
919 	}
920 
921 	function removeBlockStyle( range )
922 	{
923 		// Serializible bookmarks is needed here since
924 		// elements may be merged.
925 		var bookmark = range.createBookmark( 1 );
926 
927 		var iterator = range.createIterator();
928 		iterator.enforceRealBlocks = true;
929 		iterator.enlargeBr = this._.enterMode != CKEDITOR.ENTER_BR;
930 
931 		var block;
932 		while ( ( block = iterator.getNextParagraph() ) )
933 		{
934 			if ( this.checkElementRemovable( block ) )
935 			{
936 				// <pre> get special treatment.
937 				if ( block.is( 'pre' ) )
938 				{
939 					var newBlock = this._.enterMode == CKEDITOR.ENTER_BR ?
940 								null : range.document.createElement(
941 									this._.enterMode == CKEDITOR.ENTER_P ? 'p' : 'div' );
942 
943 					newBlock && block.copyAttributes( newBlock );
944 					replaceBlock( block, newBlock );
945 				}
946 				else
947 					 removeFromElement( this, block, 1 );
948 			}
949 		}
950 
951 		range.moveToBookmark( bookmark );
952 	}
953 
954 	// Replace the original block with new one, with special treatment
955 	// for <pre> blocks to make sure content format is well preserved, and merging/splitting adjacent
956 	// when necessary.(#3188)
957 	function replaceBlock( block, newBlock )
958 	{
959 		// Block is to be removed, create a temp element to
960 		// save contents.
961 		var removeBlock = !newBlock;
962 		if ( removeBlock )
963 		{
964 			newBlock = block.getDocument().createElement( 'div' );
965 			block.copyAttributes( newBlock );
966 		}
967 
968 		var newBlockIsPre	= newBlock && newBlock.is( 'pre' );
969 		var blockIsPre	= block.is( 'pre' );
970 
971 		var isToPre	= newBlockIsPre && !blockIsPre;
972 		var isFromPre	= !newBlockIsPre && blockIsPre;
973 
974 		if ( isToPre )
975 			newBlock = toPre( block, newBlock );
976 		else if ( isFromPre )
977 			// Split big <pre> into pieces before start to convert.
978 			newBlock = fromPres( removeBlock ?
979 						[ block.getHtml() ] : splitIntoPres( block ), newBlock );
980 		else
981 			block.moveChildren( newBlock );
982 
983 		newBlock.replace( block );
984 
985 		if ( newBlockIsPre )
986 		{
987 			// Merge previous <pre> blocks.
988 			mergePre( newBlock );
989 		}
990 		else if ( removeBlock )
991 			removeNoAttribsElement( newBlock );
992 	}
993 
994 	/**
995 	 * Merge a <pre> block with a previous sibling if available.
996 	 */
997 	function mergePre( preBlock )
998 	{
999 		var previousBlock;
1000 		if ( !( ( previousBlock = preBlock.getPrevious( nonWhitespaces ) )
1001 				 && previousBlock.is
1002 				 && previousBlock.is( 'pre') ) )
1003 			return;
1004 
1005 		// Merge the previous <pre> block contents into the current <pre>
1006 		// block.
1007 		//
1008 		// Another thing to be careful here is that currentBlock might contain
1009 		// a '\n' at the beginning, and previousBlock might contain a '\n'
1010 		// towards the end. These new lines are not normally displayed but they
1011 		// become visible after merging.
1012 		var mergedHtml = replace( previousBlock.getHtml(), /\n$/, '' ) + '\n\n' +
1013 				replace( preBlock.getHtml(), /^\n/, '' ) ;
1014 
1015 		// Krugle: IE normalizes innerHTML from <pre>, breaking whitespaces.
1016 		if ( CKEDITOR.env.ie )
1017 			preBlock.$.outerHTML = '<pre>' + mergedHtml + '</pre>';
1018 		else
1019 			preBlock.setHtml( mergedHtml );
1020 
1021 		previousBlock.remove();
1022 	}
1023 
1024 	/**
1025 	 * Split into multiple <pre> blocks separated by double line-break.
1026 	 * @param preBlock
1027 	 */
1028 	function splitIntoPres( preBlock )
1029 	{
1030 		// Exclude the ones at header OR at tail,
1031 		// and ignore bookmark content between them.
1032 		var duoBrRegex = /(\S\s*)\n(?:\s|(<span[^>]+data-cke-bookmark.*?\/span>))*\n(?!$)/gi,
1033 			blockName = preBlock.getName(),
1034 			splitedHtml = replace( preBlock.getOuterHtml(),
1035 				duoBrRegex,
1036 				function( match, charBefore, bookmark )
1037 				{
1038 				  return charBefore + '</pre>' + bookmark + '<pre>';
1039 				} );
1040 
1041 		var pres = [];
1042 		splitedHtml.replace( /<pre\b.*?>([\s\S]*?)<\/pre>/gi, function( match, preContent ){
1043 			pres.push( preContent );
1044 		} );
1045 		return pres;
1046 	}
1047 
1048 	// Wrapper function of String::replace without considering of head/tail bookmarks nodes.
1049 	function replace( str, regexp, replacement )
1050 	{
1051 		var headBookmark = '',
1052 			tailBookmark = '';
1053 
1054 		str = str.replace( /(^<span[^>]+data-cke-bookmark.*?\/span>)|(<span[^>]+data-cke-bookmark.*?\/span>$)/gi,
1055 			function( str, m1, m2 ){
1056 					m1 && ( headBookmark = m1 );
1057 					m2 && ( tailBookmark = m2 );
1058 				return '';
1059 			} );
1060 		return headBookmark + str.replace( regexp, replacement ) + tailBookmark;
1061 	}
1062 
1063 	/**
1064 	 * Converting a list of <pre> into blocks with format well preserved.
1065 	 */
1066 	function fromPres( preHtmls, newBlock )
1067 	{
1068 		var docFrag;
1069 		if ( preHtmls.length > 1 )
1070 			docFrag = new CKEDITOR.dom.documentFragment( newBlock.getDocument() );
1071 
1072 		for ( var i = 0 ; i < preHtmls.length ; i++ )
1073 		{
1074 			var blockHtml = preHtmls[ i ];
1075 
1076 			// 1. Trim the first and last line-breaks immediately after and before <pre>,
1077 			// they're not visible.
1078 			 blockHtml =  blockHtml.replace( /(\r\n|\r)/g, '\n' ) ;
1079 			 blockHtml = replace(  blockHtml, /^[ \t]*\n/, '' ) ;
1080 			 blockHtml = replace(  blockHtml, /\n$/, '' ) ;
1081 			// 2. Convert spaces or tabs at the beginning or at the end to  
1082 			 blockHtml = replace(  blockHtml, /^[ \t]+|[ \t]+$/g, function( match, offset, s )
1083 					{
1084 						if ( match.length == 1 )	// one space, preserve it
1085 							return ' ' ;
1086 						else if ( !offset )		// beginning of block
1087 							return CKEDITOR.tools.repeat( ' ', match.length - 1 ) + ' ';
1088 						else				// end of block
1089 							return ' ' + CKEDITOR.tools.repeat( ' ', match.length - 1 );
1090 					} ) ;
1091 
1092 			// 3. Convert \n to <BR>.
1093 			// 4. Convert contiguous (i.e. non-singular) spaces or tabs to  
1094 			 blockHtml =  blockHtml.replace( /\n/g, '<br>' ) ;
1095 			 blockHtml =  blockHtml.replace( /[ \t]{2,}/g,
1096 					function ( match )
1097 					{
1098 						return CKEDITOR.tools.repeat( ' ', match.length - 1 ) + ' ' ;
1099 					} ) ;
1100 
1101 			if ( docFrag )
1102 			{
1103 				var newBlockClone = newBlock.clone();
1104 				newBlockClone.setHtml(  blockHtml );
1105 				docFrag.append( newBlockClone );
1106 			}
1107 			else
1108 				newBlock.setHtml( blockHtml );
1109 		}
1110 
1111 		return docFrag || newBlock;
1112 	}
1113 
1114 	/**
1115 	 * Converting from a non-PRE block to a PRE block in formatting operations.
1116 	 */
1117 	function toPre( block, newBlock )
1118 	{
1119 		var bogus = block.getBogus();
1120 		bogus && bogus.remove();
1121 
1122 		// First trim the block content.
1123 		var preHtml = block.getHtml();
1124 
1125 		// 1. Trim head/tail spaces, they're not visible.
1126 		preHtml = replace( preHtml, /(?:^[ \t\n\r]+)|(?:[ \t\n\r]+$)/g, '' );
1127 		// 2. Delete ANSI whitespaces immediately before and after <BR> because
1128 		//    they are not visible.
1129 		preHtml = preHtml.replace( /[ \t\r\n]*(<br[^>]*>)[ \t\r\n]*/gi, '$1' );
1130 		// 3. Compress other ANSI whitespaces since they're only visible as one
1131 		//    single space previously.
1132 		// 4. Convert   to spaces since   is no longer needed in <PRE>.
1133 		preHtml = preHtml.replace( /([ \t\n\r]+| )/g, ' ' );
1134 		// 5. Convert any <BR /> to \n. This must not be done earlier because
1135 		//    the \n would then get compressed.
1136 		preHtml = preHtml.replace( /<br\b[^>]*>/gi, '\n' );
1137 
1138 		// Krugle: IE normalizes innerHTML to <pre>, breaking whitespaces.
1139 		if ( CKEDITOR.env.ie )
1140 		{
1141 			var temp = block.getDocument().createElement( 'div' );
1142 			temp.append( newBlock );
1143 			newBlock.$.outerHTML =  '<pre>' + preHtml + '</pre>';
1144 			newBlock.copyAttributes( temp.getFirst() );
1145 			newBlock = temp.getFirst().remove();
1146 		}
1147 		else
1148 			newBlock.setHtml( preHtml );
1149 
1150 		return newBlock;
1151 	}
1152 
1153 	// Removes a style from an element itself, don't care about its subtree.
1154 	function removeFromElement( style, element )
1155 	{
1156 		var def = style._.definition,
1157 			attributes = def.attributes,
1158 			styles = def.styles,
1159 			overrides = getOverrides( style )[ element.getName() ],
1160 			// If the style is only about the element itself, we have to remove the element.
1161 			removeEmpty = CKEDITOR.tools.isEmpty( attributes ) && CKEDITOR.tools.isEmpty( styles );
1162 
1163 		// Remove definition attributes/style from the elemnt.
1164 		for ( var attName in attributes )
1165 		{
1166 			// The 'class' element value must match (#1318).
1167 			if ( ( attName == 'class' || style._.definition.fullMatch )
1168 				&& element.getAttribute( attName ) != normalizeProperty( attName, attributes[ attName ] ) )
1169 				continue;
1170 			removeEmpty = element.hasAttribute( attName );
1171 			element.removeAttribute( attName );
1172 		}
1173 
1174 		for ( var styleName in styles )
1175 		{
1176 			// Full match style insist on having fully equivalence. (#5018)
1177 			if ( style._.definition.fullMatch
1178 				&& element.getStyle( styleName ) != normalizeProperty( styleName, styles[ styleName ], true ) )
1179 				continue;
1180 
1181 			removeEmpty = removeEmpty || !!element.getStyle( styleName );
1182 			element.removeStyle( styleName );
1183 		}
1184 
1185 		// Remove overrides, but don't remove the element if it's a block element
1186 		removeOverrides( element, overrides, blockElements[ element.getName() ] ) ;
1187 
1188 		if ( removeEmpty )
1189 		{
1190 			!CKEDITOR.dtd.$block[ element.getName() ] || style._.enterMode == CKEDITOR.ENTER_BR && !element.hasAttributes() ?
1191 				removeNoAttribsElement( element ) :
1192 				element.renameNode( style._.enterMode == CKEDITOR.ENTER_P ? 'p' : 'div' );
1193 		}
1194 	}
1195 
1196 	// Removes a style from inside an element.
1197 	function removeFromInsideElement( style, element )
1198 	{
1199 		var def = style._.definition,
1200 			attribs = def.attributes,
1201 			styles = def.styles,
1202 			overrides = getOverrides( style ),
1203 			innerElements = element.getElementsByTag( style.element );
1204 
1205 		for ( var i = innerElements.count(); --i >= 0 ; )
1206 			removeFromElement( style,  innerElements.getItem( i ) );
1207 
1208 		// Now remove any other element with different name that is
1209 		// defined to be overriden.
1210 		for ( var overrideElement in overrides )
1211 		{
1212 			if ( overrideElement != style.element )
1213 			{
1214 				innerElements = element.getElementsByTag( overrideElement ) ;
1215 				for ( i = innerElements.count() - 1 ; i >= 0 ; i-- )
1216 				{
1217 					var innerElement = innerElements.getItem( i );
1218 					removeOverrides( innerElement, overrides[ overrideElement ] ) ;
1219 				}
1220 			}
1221 		}
1222 	}
1223 
1224 	/**
1225 	 *  Remove overriding styles/attributes from the specific element.
1226 	 *  Note: Remove the element if no attributes remain.
1227 	 * @param {Object} element
1228 	 * @param {Object} overrides
1229 	 * @param {Boolean} Don't remove the element
1230 	 */
1231 	function removeOverrides( element, overrides, dontRemove )
1232 	{
1233 		var attributes = overrides && overrides.attributes ;
1234 
1235 		if ( attributes )
1236 		{
1237 			for ( var i = 0 ; i < attributes.length ; i++ )
1238 			{
1239 				var attName = attributes[i][0], actualAttrValue ;
1240 
1241 				if ( ( actualAttrValue = element.getAttribute( attName ) ) )
1242 				{
1243 					var attValue = attributes[i][1] ;
1244 
1245 					// Remove the attribute if:
1246 					//    - The override definition value is null ;
1247 					//    - The override definition valie is a string that
1248 					//      matches the attribute value exactly.
1249 					//    - The override definition value is a regex that
1250 					//      has matches in the attribute value.
1251 					if ( attValue === null ||
1252 							( attValue.test && attValue.test( actualAttrValue ) ) ||
1253 							( typeof attValue == 'string' && actualAttrValue == attValue ) )
1254 						element.removeAttribute( attName ) ;
1255 				}
1256 			}
1257 		}
1258 
1259 		if ( !dontRemove )
1260 			removeNoAttribsElement( element );
1261 	}
1262 
1263 	// If the element has no more attributes, remove it.
1264 	function removeNoAttribsElement( element )
1265 	{
1266 		// If no more attributes remained in the element, remove it,
1267 		// leaving its children.
1268 		if ( !element.hasAttributes() )
1269 		{
1270 			if ( CKEDITOR.dtd.$block[ element.getName() ] )
1271 			{
1272 				var previous = element.getPrevious( nonWhitespaces ),
1273 						next = element.getNext( nonWhitespaces );
1274 
1275 				if ( previous && ( previous.type == CKEDITOR.NODE_TEXT || !previous.isBlockBoundary( { br : 1 } ) ) )
1276 					element.append( 'br', 1 );
1277 				if ( next && ( next.type == CKEDITOR.NODE_TEXT || !next.isBlockBoundary( { br : 1 } ) ) )
1278 					element.append( 'br' );
1279 
1280 				element.remove( true );
1281 			}
1282 			else
1283 			{
1284 				// Removing elements may open points where merging is possible,
1285 				// so let's cache the first and last nodes for later checking.
1286 				var firstChild = element.getFirst();
1287 				var lastChild = element.getLast();
1288 
1289 				element.remove( true );
1290 
1291 				if ( firstChild )
1292 				{
1293 					// Check the cached nodes for merging.
1294 					firstChild.type == CKEDITOR.NODE_ELEMENT && firstChild.mergeSiblings();
1295 
1296 					if ( lastChild && !firstChild.equals( lastChild )
1297 							&& lastChild.type == CKEDITOR.NODE_ELEMENT )
1298 						lastChild.mergeSiblings();
1299 				}
1300 
1301 			}
1302 		}
1303 	}
1304 
1305 	function getElement( style, targetDocument, element )
1306 	{
1307 		var el,
1308 			def = style._.definition,
1309 			elementName = style.element;
1310 
1311 		// The "*" element name will always be a span for this function.
1312 		if ( elementName == '*' )
1313 			elementName = 'span';
1314 
1315 		// Create the element.
1316 		el = new CKEDITOR.dom.element( elementName, targetDocument );
1317 
1318 		// #6226: attributes should be copied before the new ones are applied
1319 		if ( element )
1320 			element.copyAttributes( el );
1321 
1322 		el = setupElement( el, style );
1323 
1324 		// Avoid ID duplication.
1325 		if ( targetDocument.getCustomData( 'doc_processing_style' ) && el.hasAttribute( 'id' ) )
1326 			el.removeAttribute( 'id' );
1327 		else
1328 			targetDocument.setCustomData( 'doc_processing_style', 1 );
1329 
1330 		return el;
1331 	}
1332 
1333 	function setupElement( el, style )
1334 	{
1335 		var def = style._.definition,
1336 			attributes = def.attributes,
1337 			styles = CKEDITOR.style.getStyleText( def );
1338 
1339 		// Assign all defined attributes.
1340 		if ( attributes )
1341 		{
1342 			for ( var att in attributes )
1343 			{
1344 				el.setAttribute( att, attributes[ att ] );
1345 			}
1346 		}
1347 
1348 		// Assign all defined styles.
1349 		if( styles )
1350 			el.setAttribute( 'style', styles );
1351 
1352 		return el;
1353 	}
1354 
1355 	function replaceVariables( list, variablesValues )
1356 	{
1357 		for ( var item in list )
1358 		{
1359 			list[ item ] = list[ item ].replace( varRegex, function( match, varName )
1360 				{
1361 					return variablesValues[ varName ];
1362 				});
1363 		}
1364 	}
1365 
1366 	// Returns an object that can be used for style matching comparison.
1367 	// Attributes names and values are all lowercased, and the styles get
1368 	// merged with the style attribute.
1369 	function getAttributesForComparison( styleDefinition )
1370 	{
1371 		// If we have already computed it, just return it.
1372 		var attribs = styleDefinition._AC;
1373 		if ( attribs )
1374 			return attribs;
1375 
1376 		attribs = {};
1377 
1378 		var length = 0;
1379 
1380 		// Loop through all defined attributes.
1381 		var styleAttribs = styleDefinition.attributes;
1382 		if ( styleAttribs )
1383 		{
1384 			for ( var styleAtt in styleAttribs )
1385 			{
1386 				length++;
1387 				attribs[ styleAtt ] = styleAttribs[ styleAtt ];
1388 			}
1389 		}
1390 
1391 		// Includes the style definitions.
1392 		var styleText = CKEDITOR.style.getStyleText( styleDefinition );
1393 		if ( styleText )
1394 		{
1395 			if ( !attribs[ 'style' ] )
1396 				length++;
1397 			attribs[ 'style' ] = styleText;
1398 		}
1399 
1400 		// Appends the "length" information to the object.
1401 		attribs._length = length;
1402 
1403 		// Return it, saving it to the next request.
1404 		return ( styleDefinition._AC = attribs );
1405 	}
1406 
1407 	/**
1408 	 * Get the the collection used to compare the elements and attributes,
1409 	 * defined in this style overrides, with other element. All information in
1410 	 * it is lowercased.
1411 	 * @param {CKEDITOR.style} style
1412 	 */
1413 	function getOverrides( style )
1414 	{
1415 		if ( style._.overrides )
1416 			return style._.overrides;
1417 
1418 		var overrides = ( style._.overrides = {} ),
1419 			definition = style._.definition.overrides;
1420 
1421 		if ( definition )
1422 		{
1423 			// The override description can be a string, object or array.
1424 			// Internally, well handle arrays only, so transform it if needed.
1425 			if ( !CKEDITOR.tools.isArray( definition ) )
1426 				definition = [ definition ];
1427 
1428 			// Loop through all override definitions.
1429 			for ( var i = 0 ; i < definition.length ; i++ )
1430 			{
1431 				var override = definition[i];
1432 				var elementName;
1433 				var overrideEl;
1434 				var attrs;
1435 
1436 				// If can be a string with the element name.
1437 				if ( typeof override == 'string' )
1438 					elementName = override.toLowerCase();
1439 				// Or an object.
1440 				else
1441 				{
1442 					elementName = override.element ? override.element.toLowerCase() : style.element;
1443 					attrs = override.attributes;
1444 				}
1445 
1446 				// We can have more than one override definition for the same
1447 				// element name, so we attempt to simply append information to
1448 				// it if it already exists.
1449 				overrideEl = overrides[ elementName ] || ( overrides[ elementName ] = {} );
1450 
1451 				if ( attrs )
1452 				{
1453 					// The returning attributes list is an array, because we
1454 					// could have different override definitions for the same
1455 					// attribute name.
1456 					var overrideAttrs = ( overrideEl.attributes = overrideEl.attributes || new Array() );
1457 					for ( var attName in attrs )
1458 					{
1459 						// Each item in the attributes array is also an array,
1460 						// where [0] is the attribute name and [1] is the
1461 						// override value.
1462 						overrideAttrs.push( [ attName.toLowerCase(), attrs[ attName ] ] );
1463 					}
1464 				}
1465 			}
1466 		}
1467 
1468 		return overrides;
1469 	}
1470 
1471 	// Make the comparison of attribute value easier by standardizing it.
1472 	function normalizeProperty( name, value, isStyle )
1473 	{
1474 		var temp = new CKEDITOR.dom.element( 'span' );
1475 		temp [ isStyle ? 'setStyle' : 'setAttribute' ]( name, value );
1476 		return temp[ isStyle ? 'getStyle' : 'getAttribute' ]( name );
1477 	}
1478 
1479 	// Make the comparison of style text easier by standardizing it.
1480 	function normalizeCssText( unparsedCssText, nativeNormalize )
1481 	{
1482 		var styleText;
1483 		if ( nativeNormalize !== false )
1484 		{
1485 			// Injects the style in a temporary span object, so the browser parses it,
1486 			// retrieving its final format.
1487 			var temp = new CKEDITOR.dom.element( 'span' );
1488 			temp.setAttribute( 'style', unparsedCssText );
1489 			styleText = temp.getAttribute( 'style' ) || '';
1490 		}
1491 		else
1492 			styleText = unparsedCssText;
1493 
1494 		// Normalize font-family property, ignore quotes and being case insensitive. (#7322)
1495 		// http://www.w3.org/TR/css3-fonts/#font-family-the-font-family-property
1496 		styleText = styleText.replace( /(font-family:)(.*?)(?=;|$)/, function ( match, prop, val )
1497 		{
1498 			var names = val.split( ',' );
1499 			for ( var i = 0; i < names.length; i++ )
1500 				names[ i ] = CKEDITOR.tools.trim( names[ i ].replace( /["']/g, '' ) );
1501 			return prop + names.join( ',' );
1502 		});
1503 
1504 		// Shrinking white-spaces around colon and semi-colon (#4147).
1505 		// Compensate tail semi-colon.
1506 		return styleText.replace( /\s*([;:])\s*/, '$1' )
1507 							 .replace( /([^\s;])$/, '$1;')
1508 				 			// Trimming spaces after comma(#4107),
1509 				 			// remove quotations(#6403),
1510 				 			// mostly for differences on "font-family".
1511 							 .replace( /,\s+/g, ',' )
1512 							 .replace( /\"/g,'' )
1513 							 .toLowerCase();
1514 	}
1515 
1516 	// Turn inline style text properties into one hash.
1517 	function parseStyleText( styleText )
1518 	{
1519 		var retval = {};
1520 		styleText
1521 		   .replace( /"/g, '"' )
1522 		   .replace( /\s*([^ :;]+)\s*:\s*([^;]+)\s*(?=;|$)/g, function( match, name, value )
1523 		{
1524 			retval[ name ] = value;
1525 		} );
1526 		return retval;
1527 	}
1528 
1529 	/**
1530 	 * Compare two bunch of styles, with the speciality that value 'inherit'
1531 	 * is treated as a wildcard which will match any value.
1532 	 * @param {Object|String} source
1533 	 * @param {Object|String} target
1534 	 */
1535 	function compareCssText( source, target )
1536 	{
1537 		typeof source == 'string' && ( source = parseStyleText( source ) );
1538 		typeof target == 'string' && ( target = parseStyleText( target ) );
1539 		for( var name in source )
1540 		{
1541 			if ( !( name in target &&
1542 					( target[ name ] == source[ name ]
1543 						|| source[ name ] == 'inherit'
1544 						|| target[ name ] == 'inherit' ) ) )
1545 			{
1546 				return false;
1547 			}
1548 		}
1549 		return true;
1550 	}
1551 
1552 	function applyStyle( document, remove )
1553 	{
1554 		var selection = document.getSelection(),
1555 			// Bookmark the range so we can re-select it after processing.
1556 			bookmarks = selection.createBookmarks( 1 ),
1557 			ranges = selection.getRanges(),
1558 			func = remove ? this.removeFromRange : this.applyToRange,
1559 			range;
1560 
1561 		var iterator = ranges.createIterator();
1562 		while ( ( range = iterator.getNextRange() ) )
1563 			func.call( this, range );
1564 
1565 		if ( bookmarks.length == 1 && bookmarks[ 0 ].collapsed )
1566 		{
1567 			selection.selectRanges( ranges );
1568 			document.getById( bookmarks[ 0 ].startNode ).remove();
1569 		}
1570 		else
1571 			selection.selectBookmarks( bookmarks );
1572 
1573 		document.removeCustomData( 'doc_processing_style' );
1574 	}
1575 })();
1576 
1577 CKEDITOR.styleCommand = function( style )
1578 {
1579 	this.style = style;
1580 };
1581 
1582 CKEDITOR.styleCommand.prototype.exec = function( editor )
1583 {
1584 	editor.focus();
1585 
1586 	var doc = editor.document;
1587 
1588 	if ( doc )
1589 	{
1590 		if ( this.state == CKEDITOR.TRISTATE_OFF )
1591 			this.style.apply( doc );
1592 		else if ( this.state == CKEDITOR.TRISTATE_ON )
1593 			this.style.remove( doc );
1594 	}
1595 
1596 	return !!doc;
1597 };
1598 
1599 /**
1600  * Manages styles registration and loading. See also {@link CKEDITOR.config.stylesSet}.
1601  * @namespace
1602  * @augments CKEDITOR.resourceManager
1603  * @constructor
1604  * @since 3.2
1605  * @example
1606  * // The set of styles for the <b>Styles</b> combo
1607  * CKEDITOR.stylesSet.add( 'default',
1608  * [
1609  * 	// Block Styles
1610  * 	{ name : 'Blue Title'		, element : 'h3', styles : { 'color' : 'Blue' } },
1611  * 	{ name : 'Red Title'		, element : 'h3', styles : { 'color' : 'Red' } },
1612  *
1613  * 	// Inline Styles
1614  * 	{ name : 'Marker: Yellow'	, element : 'span', styles : { 'background-color' : 'Yellow' } },
1615  * 	{ name : 'Marker: Green'	, element : 'span', styles : { 'background-color' : 'Lime' } },
1616  *
1617  * 	// Object Styles
1618  * 	{
1619  * 		name : 'Image on Left',
1620  * 		element : 'img',
1621  * 		attributes :
1622  * 		{
1623  * 			'style' : 'padding: 5px; margin-right: 5px',
1624  * 			'border' : '2',
1625  * 			'align' : 'left'
1626  * 		}
1627  * 	}
1628  * ]);
1629  */
1630 CKEDITOR.stylesSet = new CKEDITOR.resourceManager( '', 'stylesSet' );
1631 
1632 // Backward compatibility (#5025).
1633 CKEDITOR.addStylesSet = CKEDITOR.tools.bind( CKEDITOR.stylesSet.add, CKEDITOR.stylesSet );
1634 CKEDITOR.loadStylesSet = function( name, url, callback )
1635 	{
1636 		CKEDITOR.stylesSet.addExternal( name, url, '' );
1637 		CKEDITOR.stylesSet.load( name, callback );
1638 	};
1639 
1640 
1641 /**
1642  * Gets the current styleSet for this instance
1643  * @param {Function} callback The function to be called with the styles data.
1644  * @example
1645  * editor.getStylesSet( function( stylesDefinitions ) {} );
1646  */
1647 CKEDITOR.editor.prototype.getStylesSet = function( callback )
1648 {
1649 	if ( !this._.stylesDefinitions )
1650 	{
1651 		var editor = this,
1652 			// Respect the backwards compatible definition entry
1653 			configStyleSet = editor.config.stylesCombo_stylesSet || editor.config.stylesSet || 'default';
1654 
1655 		// #5352 Allow to define the styles directly in the config object
1656 		if ( configStyleSet instanceof Array )
1657 		{
1658 			editor._.stylesDefinitions = configStyleSet;
1659 			callback( configStyleSet );
1660 			return;
1661 		}
1662 
1663 		var	partsStylesSet = configStyleSet.split( ':' ),
1664 			styleSetName = partsStylesSet[ 0 ],
1665 			externalPath = partsStylesSet[ 1 ],
1666 			pluginPath = CKEDITOR.plugins.registered.styles.path;
1667 
1668 		CKEDITOR.stylesSet.addExternal( styleSetName,
1669 				externalPath ?
1670 					partsStylesSet.slice( 1 ).join( ':' ) :
1671 					pluginPath + 'styles/' + styleSetName + '.js', '' );
1672 
1673 		CKEDITOR.stylesSet.load( styleSetName, function( stylesSet )
1674 			{
1675 				editor._.stylesDefinitions = stylesSet[ styleSetName ];
1676 				callback( editor._.stylesDefinitions );
1677 			} ) ;
1678 	}
1679 	else
1680 		callback( this._.stylesDefinitions );
1681 };
1682 
1683 /**
1684  * Indicates that fully selected read-only elements will be included when
1685  * applying the style (for inline styles only).
1686  * @name CKEDITOR.style.includeReadonly
1687  * @type Boolean
1688  * @default false
1689  * @since 3.5
1690  */
1691 
1692  /**
1693   * Disables inline styling on read-only elements.
1694   * @name CKEDITOR.config.disableReadonlyStyling
1695   * @type Boolean
1696   * @default false
1697   * @since 3.5
1698   */
1699 
1700 /**
1701  * The "styles definition set" to use in the editor. They will be used in the
1702  * styles combo and the Style selector of the div container. <br>
1703  * The styles may be defined in the page containing the editor, or can be
1704  * loaded on demand from an external file. In the second case, if this setting
1705  * contains only a name, the styles definition file will be loaded from the
1706  * "styles" folder inside the styles plugin folder.
1707  * Otherwise, this setting has the "name:url" syntax, making it
1708  * possible to set the URL from which loading the styles file.<br>
1709  * Previously this setting was available as config.stylesCombo_stylesSet<br>
1710  * @name CKEDITOR.config.stylesSet
1711  * @type String|Array
1712  * @default 'default'
1713  * @since 3.3
1714  * @example
1715  * // Load from the styles' styles folder (mystyles.js file).
1716  * config.stylesSet = 'mystyles';
1717  * @example
1718  * // Load from a relative URL.
1719  * config.stylesSet = 'mystyles:/editorstyles/styles.js';
1720  * @example
1721  * // Load from a full URL.
1722  * config.stylesSet = 'mystyles:http://www.example.com/editorstyles/styles.js';
1723  * @example
1724  * // Load from a list of definitions.
1725  * config.stylesSet = [
1726  *  { name : 'Strong Emphasis', element : 'strong' },
1727  * { name : 'Emphasis', element : 'em' }, ... ];
1728  */
1729