_source/plugins/styles/plugin.js

   1 /*\r
   2 Copyright (c) 2003-2010, CKSource - Frederico Knabben. All rights reserved.\r
   3 For licensing, see LICENSE.html or http://ckeditor.com/license\r
   4 */\r
   5 \r
   6 CKEDITOR.plugins.add( 'styles',\r
   7 {\r
   8         requires : [ 'selection' ]\r
   9 });\r
  10 \r
  11 /**\r
  12  * Registers a function to be called whenever a style changes its state in the\r
  13  * editing area. The current state is passed to the function. The possible\r
  14  * states are {@link CKEDITOR.TRISTATE_ON} and {@link CKEDITOR.TRISTATE_OFF}.\r
  15  * @param {CKEDITOR.style} The style to be watched.\r
  16  * @param {Function} The function to be called when the style state changes.\r
  17  * @example\r
  18  * // Create a style object for the &lt;b&gt; element.\r
  19  * var style = new CKEDITOR.style( { element : 'b' } );\r
  20  * var editor = CKEDITOR.instances.editor1;\r
  21  * editor.attachStyleStateChange( style, function( state )\r
  22  *     {\r
  23  *         if ( state == CKEDITOR.TRISTATE_ON )\r
  24  *             alert( 'The current state for the B element is ON' );\r
  25  *         else\r
  26  *             alert( 'The current state for the B element is OFF' );\r
  27  *     });\r
  28  */\r
  29 CKEDITOR.editor.prototype.attachStyleStateChange = function( style, callback )\r
  30 {\r
  31         // Try to get the list of attached callbacks.\r
  32         var styleStateChangeCallbacks = this._.styleStateChangeCallbacks;\r
  33 \r
  34         // If it doesn't exist, it means this is the first call. So, let's create\r
  35         // all the structure to manage the style checks and the callback calls.\r
  36         if ( !styleStateChangeCallbacks )\r
  37         {\r
  38                 // Create the callbacks array.\r
  39                 styleStateChangeCallbacks = this._.styleStateChangeCallbacks = [];\r
  40 \r
  41                 // Attach to the selectionChange event, so we can check the styles at\r
  42                 // that point.\r
  43                 this.on( 'selectionChange', function( ev )\r
  44                         {\r
  45                                 // Loop throw all registered callbacks.\r
  46                                 for ( var i = 0 ; i < styleStateChangeCallbacks.length ; i++ )\r
  47                                 {\r
  48                                         var callback = styleStateChangeCallbacks[ i ];\r
  49 \r
  50                                         // Check the current state for the style defined for that\r
  51                                         // callback.\r
  52                                         var currentState = callback.style.checkActive( ev.data.path ) ? CKEDITOR.TRISTATE_ON : CKEDITOR.TRISTATE_OFF;\r
  53 \r
  54                                         // If the state changed since the last check.\r
  55                                         if ( callback.state !== currentState )\r
  56                                         {\r
  57                                                 // Call the callback function, passing the current\r
  58                                                 // state to it.\r
  59                                                 callback.fn.call( this, currentState );\r
  60 \r
  61                                                 // Save the current state, so it can be compared next\r
  62                                                 // time.\r
  63                                                 callback.state !== currentState;\r
  64                                         }\r
  65                                 }\r
  66                         });\r
  67         }\r
  68 \r
  69         // Save the callback info, so it can be checked on the next occurence of\r
  70         // selectionChange.\r
  71         styleStateChangeCallbacks.push( { style : style, fn : callback } );\r
  72 };\r
  73 \r
  74 CKEDITOR.STYLE_BLOCK = 1;\r
  75 CKEDITOR.STYLE_INLINE = 2;\r
  76 CKEDITOR.STYLE_OBJECT = 3;\r
  77 \r
  78 (function()\r
  79 {\r
  80         var blockElements       = { address:1,div:1,h1:1,h2:1,h3:1,h4:1,h5:1,h6:1,p:1,pre:1 };\r
  81         var objectElements      = { a:1,embed:1,hr:1,img:1,li:1,object:1,ol:1,table:1,td:1,tr:1,ul:1 };\r
  82 \r
  83         var semicolonFixRegex = /\s*(?:;\s*|$)/;\r
  84 \r
  85         CKEDITOR.style = function( styleDefinition, variablesValues )\r
  86         {\r
  87                 if ( variablesValues )\r
  88                 {\r
  89                         styleDefinition = CKEDITOR.tools.clone( styleDefinition );\r
  90 \r
  91                         replaceVariables( styleDefinition.attributes, variablesValues );\r
  92                         replaceVariables( styleDefinition.styles, variablesValues );\r
  93                 }\r
  94 \r
  95                 var element = this.element = ( styleDefinition.element || '*' ).toLowerCase();\r
  96 \r
  97                 this.type =\r
  98                         ( element == '#' || blockElements[ element ] ) ?\r
  99                                 CKEDITOR.STYLE_BLOCK\r
 100                         : objectElements[ element ] ?\r
 101                                 CKEDITOR.STYLE_OBJECT\r
 102                         :\r
 103                                 CKEDITOR.STYLE_INLINE;\r
 104 \r
 105                 this._ =\r
 106                 {\r
 107                         definition : styleDefinition\r
 108                 };\r
 109         };\r
 110 \r
 111         CKEDITOR.style.prototype =\r
 112         {\r
 113                 apply : function( document )\r
 114                 {\r
 115                         applyStyle.call( this, document, false );\r
 116                 },\r
 117 \r
 118                 remove : function( document )\r
 119                 {\r
 120                         applyStyle.call( this, document, true );\r
 121                 },\r
 122 \r
 123                 applyToRange : function( range )\r
 124                 {\r
 125                         return ( this.applyToRange =\r
 126                                                 this.type == CKEDITOR.STYLE_INLINE ?\r
 127                                                         applyInlineStyle\r
 128                                                 : this.type == CKEDITOR.STYLE_BLOCK ?\r
 129                                                         applyBlockStyle\r
 130                                                 : null ).call( this, range );\r
 131                 },\r
 132 \r
 133                 removeFromRange : function( range )\r
 134                 {\r
 135                         return ( this.removeFromRange =\r
 136                                                 this.type == CKEDITOR.STYLE_INLINE ?\r
 137                                                         removeInlineStyle\r
 138                                                 : null ).call( this, range );\r
 139                 },\r
 140 \r
 141                 applyToObject : function( element )\r
 142                 {\r
 143                         setupElement( element, this );\r
 144                 },\r
 145 \r
 146                 /**\r
 147                  * Get the style state inside an element path. Returns "true" if the\r
 148                  * element is active in the path.\r
 149                  */\r
 150                 checkActive : function( elementPath )\r
 151                 {\r
 152                         switch ( this.type )\r
 153                         {\r
 154                                 case CKEDITOR.STYLE_BLOCK :\r
 155                                         return this.checkElementRemovable( elementPath.block || elementPath.blockLimit, true );\r
 156 \r
 157                                 case CKEDITOR.STYLE_INLINE :\r
 158 \r
 159                                         var elements = elementPath.elements;\r
 160 \r
 161                                         for ( var i = 0, element ; i < elements.length ; i++ )\r
 162                                         {\r
 163                                                 element = elements[i];\r
 164 \r
 165                                                 if ( element == elementPath.block || element == elementPath.blockLimit )\r
 166                                                         continue;\r
 167 \r
 168                                                 if ( this.checkElementRemovable( element, true ) )\r
 169                                                         return true;\r
 170                                         }\r
 171                         }\r
 172                         return false;\r
 173                 },\r
 174 \r
 175                 // Checks if an element, or any of its attributes, is removable by the\r
 176                 // current style definition.\r
 177                 checkElementRemovable : function( element, fullMatch )\r
 178                 {\r
 179                         if ( !element )\r
 180                                 return false;\r
 181 \r
 182                         var def = this._.definition,\r
 183                                 attribs;\r
 184 \r
 185                         // If the element name is the same as the style name.\r
 186                         if ( element.getName() == this.element )\r
 187                         {\r
 188                                 // If no attributes are defined in the element.\r
 189                                 if ( !fullMatch && !element.hasAttributes() )\r
 190                                         return true;\r
 191 \r
 192                                 attribs = getAttributesForComparison( def );\r
 193 \r
 194                                 if ( attribs._length )\r
 195                                 {\r
 196                                         for ( var attName in attribs )\r
 197                                         {\r
 198                                                 if ( attName == '_length' )\r
 199                                                         continue;\r
 200 \r
 201                                                 var elementAttr = element.getAttribute( attName ) || '';\r
 202                                                 if ( attribs[ attName ] ==\r
 203                                                          ( attName == 'style' ?\r
 204                                                            normalizeCssText( elementAttr, false ) : elementAttr  ) )\r
 205                                                 {\r
 206                                                         if ( !fullMatch )\r
 207                                                                 return true;\r
 208                                                 }\r
 209                                                 else if ( fullMatch )\r
 210                                                                 return false;\r
 211                                         }\r
 212                                         if ( fullMatch )\r
 213                                                 return true;\r
 214                                 }\r
 215                                 else\r
 216                                         return true;\r
 217                         }\r
 218 \r
 219                         // Check if the element can be somehow overriden.\r
 220                         var override = getOverrides( this )[ element.getName() ] ;\r
 221                         if ( override )\r
 222                         {\r
 223                                 // If no attributes have been defined, remove the element.\r
 224                                 if ( !( attribs = override.attributes ) )\r
 225                                         return true;\r
 226 \r
 227                                 for ( var i = 0 ; i < attribs.length ; i++ )\r
 228                                 {\r
 229                                         attName = attribs[i][0];\r
 230                                         var actualAttrValue = element.getAttribute( attName );\r
 231                                         if ( actualAttrValue )\r
 232                                         {\r
 233                                                 var attValue = attribs[i][1];\r
 234 \r
 235                                                 // Remove the attribute if:\r
 236                                                 //    - The override definition value is null;\r
 237                                                 //    - The override definition value is a string that\r
 238                                                 //      matches the attribute value exactly.\r
 239                                                 //    - The override definition value is a regex that\r
 240                                                 //      has matches in the attribute value.\r
 241                                                 if ( attValue === null ||\r
 242                                                                 ( typeof attValue == 'string' && actualAttrValue == attValue ) ||\r
 243                                                                 attValue.test( actualAttrValue ) )\r
 244                                                         return true;\r
 245                                         }\r
 246                                 }\r
 247                         }\r
 248                         return false;\r
 249                 }\r
 250         };\r
 251 \r
 252         // Build the cssText based on the styles definition.\r
 253         CKEDITOR.style.getStyleText = function( styleDefinition )\r
 254         {\r
 255                 // If we have already computed it, just return it.\r
 256                 var stylesDef = styleDefinition._ST;\r
 257                 if ( stylesDef )\r
 258                         return stylesDef;\r
 259 \r
 260                 stylesDef = styleDefinition.styles;\r
 261 \r
 262                 // Builds the StyleText.\r
 263 \r
 264                 var stylesText = ( styleDefinition.attributes && styleDefinition.attributes[ 'style' ] ) || '';\r
 265 \r
 266                 if ( stylesText.length )\r
 267                         stylesText = stylesText.replace( semicolonFixRegex, ';' );\r
 268 \r
 269                 for ( var style in stylesDef )\r
 270                         stylesText += ( style + ':' + stylesDef[ style ] ).replace( semicolonFixRegex, ';' );\r
 271 \r
 272                 // Browsers make some changes to the style when applying them. So, here\r
 273                 // we normalize it to the browser format.\r
 274                 if ( stylesText.length )\r
 275                         stylesText = normalizeCssText( stylesText );\r
 276 \r
 277                 // Return it, saving it to the next request.\r
 278                 return ( styleDefinition._ST = stylesText );\r
 279         };\r
 280 \r
 281         function applyInlineStyle( range )\r
 282         {\r
 283                 var document = range.document;\r
 284 \r
 285                 if ( range.collapsed )\r
 286                 {\r
 287                         // Create the element to be inserted in the DOM.\r
 288                         var collapsedElement = getElement( this, document );\r
 289 \r
 290                         // Insert the empty element into the DOM at the range position.\r
 291                         range.insertNode( collapsedElement );\r
 292 \r
 293                         // Place the selection right inside the empty element.\r
 294                         range.moveToPosition( collapsedElement, CKEDITOR.POSITION_BEFORE_END );\r
 295 \r
 296                         return;\r
 297                 }\r
 298 \r
 299                 var elementName = this.element;\r
 300                 var def = this._.definition;\r
 301                 var isUnknownElement;\r
 302 \r
 303                 // Get the DTD definition for the element. Defaults to "span".\r
 304                 var dtd = CKEDITOR.dtd[ elementName ] || ( isUnknownElement = true, CKEDITOR.dtd.span );\r
 305 \r
 306                 // Bookmark the range so we can re-select it after processing.\r
 307                 var bookmark = range.createBookmark();\r
 308 \r
 309                 // Expand the range.\r
 310                 range.enlarge( CKEDITOR.ENLARGE_ELEMENT );\r
 311                 range.trim();\r
 312 \r
 313                 // Get the first node to be processed and the last, which concludes the\r
 314                 // processing.\r
 315                 var boundaryNodes = range.getBoundaryNodes();\r
 316                 var firstNode = boundaryNodes.startNode;\r
 317                 var lastNode = boundaryNodes.endNode.getNextSourceNode( true );\r
 318 \r
 319                 // Probably the document end is reached, we need a marker node.\r
 320                 if ( !lastNode )\r
 321                 {\r
 322                                 var marker;\r
 323                                 lastNode = marker = document.createText( '' );\r
 324                                 lastNode.insertAfter( range.endContainer );\r
 325                 }\r
 326                 // The detection algorithm below skips the contents inside bookmark nodes, so\r
 327                 // we'll need to make sure lastNode isn't the &nbsp; inside a bookmark node.\r
 328                 var lastParent = lastNode.getParent();\r
 329                 if ( lastParent && lastParent.getAttribute( '_fck_bookmark' ) )\r
 330                         lastNode = lastParent;\r
 331 \r
 332                 if ( lastNode.equals( firstNode ) )\r
 333                 {\r
 334                         // If the last node is the same as the the first one, we must move\r
 335                         // it to the next one, otherwise the first one will not be\r
 336                         // processed.\r
 337                         lastNode = lastNode.getNextSourceNode( true );\r
 338 \r
 339                         // It may happen that there are no more nodes after it (the end of\r
 340                         // the document), so we must add something there to make our code\r
 341                         // simpler.\r
 342                         if ( !lastNode )\r
 343                         {\r
 344                                 lastNode = marker = document.createText( '' );\r
 345                                 lastNode.insertAfter( firstNode );\r
 346                         }\r
 347                 }\r
 348 \r
 349                 var currentNode = firstNode;\r
 350 \r
 351                 var styleRange;\r
 352 \r
 353                 // Indicates that that some useful inline content has been found, so\r
 354                 // the style should be applied.\r
 355                 var hasContents;\r
 356 \r
 357                 while ( currentNode )\r
 358                 {\r
 359                         var applyStyle = false;\r
 360 \r
 361                         if ( currentNode.equals( lastNode ) )\r
 362                         {\r
 363                                 currentNode = null;\r
 364                                 applyStyle = true;\r
 365                         }\r
 366                         else\r
 367                         {\r
 368                                 var nodeType = currentNode.type;\r
 369                                 var nodeName = nodeType == CKEDITOR.NODE_ELEMENT ? currentNode.getName() : null;\r
 370 \r
 371                                 if ( nodeName && currentNode.getAttribute( '_fck_bookmark' ) )\r
 372                                 {\r
 373                                         currentNode = currentNode.getNextSourceNode( true );\r
 374                                         continue;\r
 375                                 }\r
 376 \r
 377                                 // Check if the current node can be a child of the style element.\r
 378                                 if ( !nodeName || ( dtd[ nodeName ]\r
 379                                         && ( currentNode.getPosition( lastNode ) | CKEDITOR.POSITION_PRECEDING | CKEDITOR.POSITION_IDENTICAL | CKEDITOR.POSITION_IS_CONTAINED ) == ( CKEDITOR.POSITION_PRECEDING + CKEDITOR.POSITION_IDENTICAL + CKEDITOR.POSITION_IS_CONTAINED )\r
 380                                         && ( !def.childRule || def.childRule( currentNode ) ) ) )\r
 381                                 {\r
 382                                         var currentParent = currentNode.getParent();\r
 383 \r
 384                                         // Check if the style element can be a child of the current\r
 385                                         // node parent or if the element is not defined in the DTD.\r
 386                                         if ( currentParent\r
 387                                                 && ( ( currentParent.getDtd() || CKEDITOR.dtd.span )[ elementName ] || isUnknownElement )\r
 388                                                 && ( !def.parentRule || def.parentRule( currentParent ) ) )\r
 389                                         {\r
 390                                                 // This node will be part of our range, so if it has not\r
 391                                                 // been started, place its start right before the node.\r
 392                                                 // In the case of an element node, it will be included\r
 393                                                 // only if it is entirely inside the range.\r
 394                                                 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 ) ) )\r
 395                                                 {\r
 396                                                         styleRange = new CKEDITOR.dom.range( document );\r
 397                                                         styleRange.setStartBefore( currentNode );\r
 398                                                 }\r
 399 \r
 400                                                 // Non element nodes, or empty elements can be added\r
 401                                                 // completely to the range.\r
 402                                                 if ( nodeType == CKEDITOR.NODE_TEXT || ( nodeType == CKEDITOR.NODE_ELEMENT && !currentNode.getChildCount() ) )\r
 403                                                 {\r
 404                                                         var includedNode = currentNode;\r
 405                                                         var parentNode;\r
 406 \r
 407                                                         // This node is about to be included completelly, but,\r
 408                                                         // if this is the last node in its parent, we must also\r
 409                                                         // check if the parent itself can be added completelly\r
 410                                                         // to the range.\r
 411                                                         while ( !includedNode.$.nextSibling\r
 412                                                                 && ( parentNode = includedNode.getParent(), dtd[ parentNode.getName() ] )\r
 413                                                                 && ( parentNode.getPosition( firstNode ) | CKEDITOR.POSITION_FOLLOWING | CKEDITOR.POSITION_IDENTICAL | CKEDITOR.POSITION_IS_CONTAINED ) == ( CKEDITOR.POSITION_FOLLOWING + CKEDITOR.POSITION_IDENTICAL + CKEDITOR.POSITION_IS_CONTAINED )\r
 414                                                                 && ( !def.childRule || def.childRule( parentNode ) ) )\r
 415                                                         {\r
 416                                                                 includedNode = parentNode;\r
 417                                                         }\r
 418 \r
 419                                                         styleRange.setEndAfter( includedNode );\r
 420 \r
 421                                                         // If the included node still is the last node in its\r
 422                                                         // parent, it means that the parent can't be included\r
 423                                                         // in this style DTD, so apply the style immediately.\r
 424                                                         if ( !includedNode.$.nextSibling )\r
 425                                                                 applyStyle = true;\r
 426 \r
 427                                                         if ( !hasContents )\r
 428                                                                 hasContents = ( nodeType != CKEDITOR.NODE_TEXT || (/[^\s\ufeff]/).test( currentNode.getText() ) );\r
 429                                                 }\r
 430                                         }\r
 431                                         else\r
 432                                                 applyStyle = true;\r
 433                                 }\r
 434                                 else\r
 435                                         applyStyle = true;\r
 436 \r
 437                                 // Get the next node to be processed.\r
 438                                 currentNode = currentNode.getNextSourceNode();\r
 439                         }\r
 440 \r
 441                         // Apply the style if we have something to which apply it.\r
 442                         if ( applyStyle && hasContents && styleRange && !styleRange.collapsed )\r
 443                         {\r
 444                                 // Build the style element, based on the style object definition.\r
 445                                 var styleNode = getElement( this, document );\r
 446 \r
 447                                 // Get the element that holds the entire range.\r
 448                                 var parent = styleRange.getCommonAncestor();\r
 449 \r
 450                                 // Loop through the parents, removing the redundant attributes\r
 451                                 // from the element to be applied.\r
 452                                 while ( styleNode && parent )\r
 453                                 {\r
 454                                         if ( parent.getName() == elementName )\r
 455                                         {\r
 456                                                 for ( var attName in def.attributes )\r
 457                                                 {\r
 458                                                         if ( styleNode.getAttribute( attName ) == parent.getAttribute( attName ) )\r
 459                                                                 styleNode.removeAttribute( attName );\r
 460                                                 }\r
 461 \r
 462                                                 for ( var styleName in def.styles )\r
 463                                                 {\r
 464                                                         if ( styleNode.getStyle( styleName ) == parent.getStyle( styleName ) )\r
 465                                                                 styleNode.removeStyle( styleName );\r
 466                                                 }\r
 467 \r
 468                                                 if ( !styleNode.hasAttributes() )\r
 469                                                 {\r
 470                                                         styleNode = null;\r
 471                                                         break;\r
 472                                                 }\r
 473                                         }\r
 474 \r
 475                                         parent = parent.getParent();\r
 476                                 }\r
 477 \r
 478                                 if ( styleNode )\r
 479                                 {\r
 480                                         // Move the contents of the range to the style element.\r
 481                                         styleRange.extractContents().appendTo( styleNode );\r
 482 \r
 483                                         // Here we do some cleanup, removing all duplicated\r
 484                                         // elements from the style element.\r
 485                                         removeFromInsideElement( this, styleNode );\r
 486 \r
 487                                         // Insert it into the range position (it is collapsed after\r
 488                                         // extractContents.\r
 489                                         styleRange.insertNode( styleNode );\r
 490 \r
 491                                         // Let's merge our new style with its neighbors, if possible.\r
 492                                         mergeSiblings( styleNode );\r
 493 \r
 494                                         // As the style system breaks text nodes constantly, let's normalize\r
 495                                         // things for performance.\r
 496                                         // With IE, some paragraphs get broken when calling normalize()\r
 497                                         // repeatedly. Also, for IE, we must normalize body, not documentElement.\r
 498                                         // IE is also known for having a "crash effect" with normalize().\r
 499                                         // We should try to normalize with IE too in some way, somewhere.\r
 500                                         if ( !CKEDITOR.env.ie )\r
 501                                                 styleNode.$.normalize();\r
 502                                 }\r
 503 \r
 504                                 // Style applied, let's release the range, so it gets\r
 505                                 // re-initialization in the next loop.\r
 506                                 styleRange = null;\r
 507                         }\r
 508                 }\r
 509 \r
 510                 // Remove the temporary marking node.(#4111)\r
 511                 marker && marker.remove();\r
 512                 range.moveToBookmark( bookmark );\r
 513         }\r
 514 \r
 515         function removeInlineStyle( range )\r
 516         {\r
 517                 /*\r
 518                  * Make sure our range has included all "collpased" parent inline nodes so\r
 519                  * that our operation logic can be simpler.\r
 520                  */\r
 521                 range.enlarge( CKEDITOR.ENLARGE_ELEMENT );\r
 522 \r
 523                 var bookmark = range.createBookmark(),\r
 524                         startNode = bookmark.startNode;\r
 525 \r
 526                 if ( range.collapsed )\r
 527                 {\r
 528 \r
 529                         var startPath = new CKEDITOR.dom.elementPath( startNode.getParent() ),\r
 530                                 // The topmost element in elementspatch which we should jump out of.\r
 531                                 boundaryElement;\r
 532 \r
 533 \r
 534                         for ( var i = 0, element ; i < startPath.elements.length\r
 535                                         && ( element = startPath.elements[i] ) ; i++ )\r
 536                         {\r
 537                                 /*\r
 538                                  * 1. If it's collaped inside text nodes, try to remove the style from the whole element.\r
 539                                  *\r
 540                                  * 2. Otherwise if it's collapsed on element boundaries, moving the selection\r
 541                                  *  outside the styles instead of removing the whole tag,\r
 542                                  *  also make sure other inner styles were well preserverd.(#3309)\r
 543                                  */\r
 544                                 if ( element == startPath.block || element == startPath.blockLimit )\r
 545                                         break;\r
 546 \r
 547                                 if ( this.checkElementRemovable( element ) )\r
 548                                 {\r
 549                                         var endOfElement = range.checkBoundaryOfElement( element, CKEDITOR.END ),\r
 550                                                         startOfElement = !endOfElement && range.checkBoundaryOfElement( element, CKEDITOR.START );\r
 551                                         if ( startOfElement || endOfElement )\r
 552                                         {\r
 553                                                 boundaryElement = element;\r
 554                                                 boundaryElement.match = startOfElement ? 'start' : 'end';\r
 555                                         }\r
 556                                         else\r
 557                                         {\r
 558                                                 /*\r
 559                                                  * Before removing the style node, there may be a sibling to the style node\r
 560                                                  * that's exactly the same to the one to be removed. To the user, it makes\r
 561                                                  * no difference that they're separate entities in the DOM tree. So, merge\r
 562                                                  * them before removal.\r
 563                                                  */\r
 564                                                 mergeSiblings( element );\r
 565                                                 removeFromElement( this, element );\r
 566 \r
 567                                         }\r
 568                                 }\r
 569                         }\r
 570 \r
 571                         // Re-create the style tree after/before the boundary element,\r
 572                         // the replication start from bookmark start node to define the\r
 573                         // new range.\r
 574                         if ( boundaryElement )\r
 575                         {\r
 576                                 var clonedElement = startNode;\r
 577                                 for ( i = 0 ;; i++ )\r
 578                                 {\r
 579                                         var newElement = startPath.elements[ i ];\r
 580                                         if ( newElement.equals( boundaryElement ) )\r
 581                                                 break;\r
 582                                         // Avoid copying any matched element.\r
 583                                         else if ( newElement.match )\r
 584                                                 continue;\r
 585                                         else\r
 586                                                 newElement = newElement.clone();\r
 587                                         newElement.append( clonedElement );\r
 588                                         clonedElement = newElement;\r
 589                                 }\r
 590                                 clonedElement[ boundaryElement.match == 'start' ?\r
 591                                                         'insertBefore' : 'insertAfter' ]( boundaryElement );\r
 592                         }\r
 593                 }\r
 594                 else\r
 595                 {\r
 596                         /*\r
 597                          * Now our range isn't collapsed. Lets walk from the start node to the end\r
 598                          * node via DFS and remove the styles one-by-one.\r
 599                          */\r
 600                         var endNode = bookmark.endNode,\r
 601                                 me = this;\r
 602 \r
 603                         /*\r
 604                          * Find out the style ancestor that needs to be broken down at startNode\r
 605                          * and endNode.\r
 606                          */\r
 607                         function breakNodes()\r
 608                         {\r
 609                                 var startPath = new CKEDITOR.dom.elementPath( startNode.getParent() ),\r
 610                                         endPath = new CKEDITOR.dom.elementPath( endNode.getParent() ),\r
 611                                         breakStart = null,\r
 612                                         breakEnd = null;\r
 613                                 for ( var i = 0 ; i < startPath.elements.length ; i++ )\r
 614                                 {\r
 615                                         var element = startPath.elements[ i ];\r
 616 \r
 617                                         if ( element == startPath.block || element == startPath.blockLimit )\r
 618                                                 break;\r
 619 \r
 620                                         if ( me.checkElementRemovable( element ) )\r
 621                                                 breakStart = element;\r
 622                                 }\r
 623                                 for ( i = 0 ; i < endPath.elements.length ; i++ )\r
 624                                 {\r
 625                                         element = endPath.elements[ i ];\r
 626 \r
 627                                         if ( element == endPath.block || element == endPath.blockLimit )\r
 628                                                 break;\r
 629 \r
 630                                         if ( me.checkElementRemovable( element ) )\r
 631                                                 breakEnd = element;\r
 632                                 }\r
 633 \r
 634                                 if ( breakEnd )\r
 635                                         endNode.breakParent( breakEnd );\r
 636                                 if ( breakStart )\r
 637                                         startNode.breakParent( breakStart );\r
 638                         }\r
 639                         breakNodes();\r
 640 \r
 641                         // Now, do the DFS walk.\r
 642                         var currentNode = startNode.getNext();\r
 643                         while ( !currentNode.equals( endNode ) )\r
 644                         {\r
 645                                 /*\r
 646                                  * Need to get the next node first because removeFromElement() can remove\r
 647                                  * the current node from DOM tree.\r
 648                                  */\r
 649                                 var nextNode = currentNode.getNextSourceNode();\r
 650                                 if ( currentNode.type == CKEDITOR.NODE_ELEMENT && this.checkElementRemovable( currentNode ) )\r
 651                                 {\r
 652                                         // Remove style from element or overriding element.\r
 653                                         if ( currentNode.getName() == this.element )\r
 654                                                 removeFromElement( this, currentNode );\r
 655                                         else\r
 656                                                 removeOverrides( currentNode, getOverrides( this )[ currentNode.getName() ] );\r
 657 \r
 658                                         /*\r
 659                                          * removeFromElement() may have merged the next node with something before\r
 660                                          * the startNode via mergeSiblings(). In that case, the nextNode would\r
 661                                          * contain startNode and we'll have to call breakNodes() again and also\r
 662                                          * reassign the nextNode to something after startNode.\r
 663                                          */\r
 664                                         if ( nextNode.type == CKEDITOR.NODE_ELEMENT && nextNode.contains( startNode ) )\r
 665                                         {\r
 666                                                 breakNodes();\r
 667                                                 nextNode = startNode.getNext();\r
 668                                         }\r
 669                                 }\r
 670                                 currentNode = nextNode;\r
 671                         }\r
 672                 }\r
 673 \r
 674                 range.moveToBookmark( bookmark );\r
 675 }\r
 676 \r
 677         function applyBlockStyle( range )\r
 678         {\r
 679                 // Serializible bookmarks is needed here since\r
 680                 // elements may be merged.\r
 681                 var bookmark = range.createBookmark( true );\r
 682 \r
 683                 var iterator = range.createIterator();\r
 684                 iterator.enforceRealBlocks = true;\r
 685 \r
 686                 var block;\r
 687                 var doc = range.document;\r
 688                 var previousPreBlock;\r
 689 \r
 690                 while ( ( block = iterator.getNextParagraph() ) )               // Only one =\r
 691                 {\r
 692                         var newBlock = getElement( this, doc );\r
 693                         replaceBlock( block, newBlock );\r
 694                 }\r
 695 \r
 696                 range.moveToBookmark( bookmark );\r
 697         }\r
 698 \r
 699         // Replace the original block with new one, with special treatment\r
 700         // for <pre> blocks to make sure content format is well preserved, and merging/splitting adjacent\r
 701         // when necessary.(#3188)\r
 702         function replaceBlock( block, newBlock )\r
 703         {\r
 704                 var newBlockIsPre       = newBlock.is( 'pre' );\r
 705                 var blockIsPre          = block.is( 'pre' );\r
 706 \r
 707                 var isToPre     = newBlockIsPre && !blockIsPre;\r
 708                 var isFromPre   = !newBlockIsPre && blockIsPre;\r
 709 \r
 710                 if ( isToPre )\r
 711                         newBlock = toPre( block, newBlock );\r
 712                 else if ( isFromPre )\r
 713                         // Split big <pre> into pieces before start to convert.\r
 714                         newBlock = fromPres( splitIntoPres( block ), newBlock );\r
 715                 else\r
 716                         block.moveChildren( newBlock );\r
 717 \r
 718                 newBlock.replace( block );\r
 719 \r
 720                 if ( newBlockIsPre )\r
 721                 {\r
 722                         // Merge previous <pre> blocks.\r
 723                         mergePre( newBlock );\r
 724                 }\r
 725         }\r
 726 \r
 727         /**\r
 728          * Merge a <pre> block with a previous sibling if available.\r
 729          */\r
 730         function mergePre( preBlock )\r
 731         {\r
 732                 var previousBlock;\r
 733                 if ( !( ( previousBlock = preBlock.getPreviousSourceNode( true, CKEDITOR.NODE_ELEMENT ) )\r
 734                                  && previousBlock.is\r
 735                                  && previousBlock.is( 'pre') ) )\r
 736                         return;\r
 737 \r
 738                 // Merge the previous <pre> block contents into the current <pre>\r
 739                 // block.\r
 740                 //\r
 741                 // Another thing to be careful here is that currentBlock might contain\r
 742                 // a '\n' at the beginning, and previousBlock might contain a '\n'\r
 743                 // towards the end. These new lines are not normally displayed but they\r
 744                 // become visible after merging.\r
 745                 var mergedHtml = replace( previousBlock.getHtml(), /\n$/, '' ) + '\n\n' +\r
 746                                 replace( preBlock.getHtml(), /^\n/, '' ) ;\r
 747 \r
 748                 // Krugle: IE normalizes innerHTML from <pre>, breaking whitespaces.\r
 749                 if ( CKEDITOR.env.ie )\r
 750                         preBlock.$.outerHTML = '<pre>' + mergedHtml + '</pre>';\r
 751                 else\r
 752                         preBlock.setHtml( mergedHtml );\r
 753 \r
 754                 previousBlock.remove();\r
 755         }\r
 756 \r
 757         /**\r
 758          * Split into multiple <pre> blocks separated by double line-break.\r
 759          * @param preBlock\r
 760          */\r
 761         function splitIntoPres( preBlock )\r
 762         {\r
 763                 // Exclude the ones at header OR at tail,\r
 764                 // and ignore bookmark content between them.\r
 765                 var duoBrRegex = /(\S\s*)\n(?:\s|(<span[^>]+_fck_bookmark.*?\/span>))*\n(?!$)/gi,\r
 766                         blockName = preBlock.getName(),\r
 767                         splitedHtml = replace( preBlock.getOuterHtml(),\r
 768                                 duoBrRegex,\r
 769                                 function( match, charBefore, bookmark )\r
 770                                 {\r
 771                                   return charBefore + '</pre>' + bookmark + '<pre>';\r
 772                                 } );\r
 773 \r
 774                 var pres = [];\r
 775                 splitedHtml.replace( /<pre>([\s\S]*?)<\/pre>/gi, function( match, preContent ){\r
 776                         pres.push( preContent );\r
 777                 } );\r
 778                 return pres;\r
 779         }\r
 780 \r
 781         // Wrapper function of String::replace without considering of head/tail bookmarks nodes.\r
 782         function replace( str, regexp, replacement )\r
 783         {\r
 784                 var headBookmark = '',\r
 785                         tailBookmark = '';\r
 786 \r
 787                 str = str.replace( /(^<span[^>]+_fck_bookmark.*?\/span>)|(<span[^>]+_fck_bookmark.*?\/span>$)/gi,\r
 788                         function( str, m1, m2 ){\r
 789                                         m1 && ( headBookmark = m1 );\r
 790                                         m2 && ( tailBookmark = m2 );\r
 791                                 return '';\r
 792                         } );\r
 793                 return headBookmark + str.replace( regexp, replacement ) + tailBookmark;\r
 794         }\r
 795         /**\r
 796          * Converting a list of <pre> into blocks with format well preserved.\r
 797          */\r
 798         function fromPres( preHtmls, newBlock )\r
 799         {\r
 800                 var docFrag = new CKEDITOR.dom.documentFragment( newBlock.getDocument() );\r
 801                 for ( var i = 0 ; i < preHtmls.length ; i++ )\r
 802                 {\r
 803                         var blockHtml = preHtmls[ i ];\r
 804 \r
 805                         // 1. Trim the first and last line-breaks immediately after and before <pre>,\r
 806                         // they're not visible.\r
 807                          blockHtml =  blockHtml.replace( /(\r\n|\r)/g, '\n' ) ;\r
 808                          blockHtml = replace(  blockHtml, /^[ \t]*\n/, '' ) ;\r
 809                          blockHtml = replace(  blockHtml, /\n$/, '' ) ;\r
 810                         // 2. Convert spaces or tabs at the beginning or at the end to &nbsp;\r
 811                          blockHtml = replace(  blockHtml, /^[ \t]+|[ \t]+$/g, function( match, offset, s )\r
 812                                         {\r
 813                                                 if ( match.length == 1 )        // one space, preserve it\r
 814                                                         return '&nbsp;' ;\r
 815                                                 else if ( !offset )             // beginning of block\r
 816                                                         return CKEDITOR.tools.repeat( '&nbsp;', match.length - 1 ) + ' ';\r
 817                                                 else                            // end of block\r
 818                                                         return ' ' + CKEDITOR.tools.repeat( '&nbsp;', match.length - 1 );\r
 819                                         } ) ;\r
 820 \r
 821                         // 3. Convert \n to <BR>.\r
 822                         // 4. Convert contiguous (i.e. non-singular) spaces or tabs to &nbsp;\r
 823                          blockHtml =  blockHtml.replace( /\n/g, '<br>' ) ;\r
 824                          blockHtml =  blockHtml.replace( /[ \t]{2,}/g,\r
 825                                         function ( match )\r
 826                                         {\r
 827                                                 return CKEDITOR.tools.repeat( '&nbsp;', match.length - 1 ) + ' ' ;\r
 828                                         } ) ;\r
 829 \r
 830                         var newBlockClone = newBlock.clone();\r
 831                         newBlockClone.setHtml(  blockHtml );\r
 832                         docFrag.append( newBlockClone );\r
 833                 }\r
 834                 return docFrag;\r
 835         }\r
 836 \r
 837         /**\r
 838          * Converting from a non-PRE block to a PRE block in formatting operations.\r
 839          */\r
 840         function toPre( block, newBlock )\r
 841         {\r
 842                 // First trim the block content.\r
 843                 var preHtml = block.getHtml();\r
 844 \r
 845                 // 1. Trim head/tail spaces, they're not visible.\r
 846                 preHtml = replace( preHtml, /(?:^[ \t\n\r]+)|(?:[ \t\n\r]+$)/g, '' );\r
 847                 // 2. Delete ANSI whitespaces immediately before and after <BR> because\r
 848                 //    they are not visible.\r
 849                 preHtml = preHtml.replace( /[ \t\r\n]*(<br[^>]*>)[ \t\r\n]*/gi, '$1' );\r
 850                 // 3. Compress other ANSI whitespaces since they're only visible as one\r
 851                 //    single space previously.\r
 852                 // 4. Convert &nbsp; to spaces since &nbsp; is no longer needed in <PRE>.\r
 853                 preHtml = preHtml.replace( /([ \t\n\r]+|&nbsp;)/g, ' ' );\r
 854                 // 5. Convert any <BR /> to \n. This must not be done earlier because\r
 855                 //    the \n would then get compressed.\r
 856                 preHtml = preHtml.replace( /<br\b[^>]*>/gi, '\n' );\r
 857 \r
 858                 // Krugle: IE normalizes innerHTML to <pre>, breaking whitespaces.\r
 859                 if ( CKEDITOR.env.ie )\r
 860                 {\r
 861                         var temp = block.getDocument().createElement( 'div' );\r
 862                         temp.append( newBlock );\r
 863                         newBlock.$.outerHTML =  '<pre>' + preHtml + '</pre>';\r
 864                         newBlock = temp.getFirst().remove();\r
 865                 }\r
 866                 else\r
 867                         newBlock.setHtml( preHtml );\r
 868 \r
 869                 return newBlock;\r
 870         }\r
 871 \r
 872         // Removes a style from an element itself, don't care about its subtree.\r
 873         function removeFromElement( style, element )\r
 874         {\r
 875                 var def = style._.definition,\r
 876                         attributes = def.attributes,\r
 877                         styles = def.styles,\r
 878                         overrides = getOverrides( style );\r
 879 \r
 880                 function removeAttrs()\r
 881                 {\r
 882                         for ( var attName in attributes )\r
 883                         {\r
 884                                 // The 'class' element value must match (#1318).\r
 885                                 if ( attName == 'class' && element.getAttribute( attName ) != attributes[ attName ] )\r
 886                                         continue;\r
 887                                 element.removeAttribute( attName );\r
 888                         }\r
 889                 }\r
 890 \r
 891                 // Remove definition attributes/style from the elemnt.\r
 892                 removeAttrs();\r
 893                 for ( var styleName in styles )\r
 894                         element.removeStyle( styleName );\r
 895 \r
 896                 // Now remove override styles on the element.\r
 897                 attributes = overrides[ element.getName() ];\r
 898                 if ( attributes )\r
 899                         removeAttrs();\r
 900                 removeNoAttribsElement( element );\r
 901         }\r
 902 \r
 903         // Removes a style from inside an element.\r
 904         function removeFromInsideElement( style, element )\r
 905         {\r
 906                 var def = style._.definition,\r
 907                         attribs = def.attributes,\r
 908                         styles = def.styles,\r
 909                         overrides = getOverrides( style );\r
 910 \r
 911                 var innerElements = element.getElementsByTag( style.element );\r
 912 \r
 913                 for ( var i = innerElements.count(); --i >= 0 ; )\r
 914                         removeFromElement( style,  innerElements.getItem( i ) );\r
 915 \r
 916                 // Now remove any other element with different name that is\r
 917                 // defined to be overriden.\r
 918                 for ( var overrideElement in overrides )\r
 919                 {\r
 920                         if ( overrideElement != style.element )\r
 921                         {\r
 922                                 innerElements = element.getElementsByTag( overrideElement ) ;\r
 923                                 for ( i = innerElements.count() - 1 ; i >= 0 ; i-- )\r
 924                                 {\r
 925                                         var innerElement = innerElements.getItem( i );\r
 926                                         removeOverrides( innerElement, overrides[ overrideElement ] ) ;\r
 927                                 }\r
 928                         }\r
 929                 }\r
 930 \r
 931         }\r
 932 \r
 933         /**\r
 934          *  Remove overriding styles/attributes from the specific element.\r
 935          *  Note: Remove the element if no attributes remain.\r
 936          * @param {Object} element\r
 937          * @param {Object} overrides\r
 938          */\r
 939         function removeOverrides( element, overrides )\r
 940         {\r
 941                 var attributes = overrides && overrides.attributes ;\r
 942 \r
 943                 if ( attributes )\r
 944                 {\r
 945                         for ( var i = 0 ; i < attributes.length ; i++ )\r
 946                         {\r
 947                                 var attName = attributes[i][0], actualAttrValue ;\r
 948 \r
 949                                 if ( ( actualAttrValue = element.getAttribute( attName ) ) )\r
 950                                 {\r
 951                                         var attValue = attributes[i][1] ;\r
 952 \r
 953                                         // Remove the attribute if:\r
 954                                         //    - The override definition value is null ;\r
 955                                         //    - The override definition valie is a string that\r
 956                                         //      matches the attribute value exactly.\r
 957                                         //    - The override definition value is a regex that\r
 958                                         //      has matches in the attribute value.\r
 959                                         if ( attValue === null ||\r
 960                                                         ( attValue.test && attValue.test( actualAttrValue ) ) ||\r
 961                                                         ( typeof attValue == 'string' && actualAttrValue == attValue ) )\r
 962                                                 element.removeAttribute( attName ) ;\r
 963                                 }\r
 964                         }\r
 965                 }\r
 966 \r
 967                 removeNoAttribsElement( element );\r
 968         }\r
 969 \r
 970         // If the element has no more attributes, remove it.\r
 971         function removeNoAttribsElement( element )\r
 972         {\r
 973                 // If no more attributes remained in the element, remove it,\r
 974                 // leaving its children.\r
 975                 if ( !element.hasAttributes() )\r
 976                 {\r
 977                         // Removing elements may open points where merging is possible,\r
 978                         // so let's cache the first and last nodes for later checking.\r
 979                         var firstChild  = element.getFirst();\r
 980                         var lastChild   = element.getLast();\r
 981 \r
 982                         element.remove( true );\r
 983 \r
 984                         if ( firstChild )\r
 985                         {\r
 986                                 // Check the cached nodes for merging.\r
 987                                 mergeSiblings( firstChild );\r
 988 \r
 989                                 if ( lastChild && !firstChild.equals( lastChild ) )\r
 990                                         mergeSiblings( lastChild );\r
 991                         }\r
 992                 }\r
 993         }\r
 994 \r
 995         function mergeSiblings( element )\r
 996         {\r
 997                 if ( !element || element.type != CKEDITOR.NODE_ELEMENT || !CKEDITOR.dtd.$removeEmpty[ element.getName() ] )\r
 998                         return;\r
 999 \r
1000                 mergeElements( element, element.getNext(), true );\r
1001                 mergeElements( element, element.getPrevious() );\r
1002         }\r
1003 \r
1004         function mergeElements( element, sibling, isNext )\r
1005         {\r
1006                 if ( sibling && sibling.type == CKEDITOR.NODE_ELEMENT )\r
1007                 {\r
1008                         var hasBookmark = sibling.getAttribute( '_fck_bookmark' );\r
1009 \r
1010                         if ( hasBookmark )\r
1011                                 sibling = isNext ? sibling.getNext() : sibling.getPrevious();\r
1012 \r
1013                         if ( sibling && sibling.type == CKEDITOR.NODE_ELEMENT && element.isIdentical( sibling ) )\r
1014                         {\r
1015                                 // Save the last child to be checked too, to merge things like\r
1016                                 // <b><i></i></b><b><i></i></b> => <b><i></i></b>\r
1017                                 var innerSibling = isNext ? element.getLast() : element.getFirst();\r
1018 \r
1019                                 if ( hasBookmark )\r
1020                                         ( isNext ? sibling.getPrevious() : sibling.getNext() ).move( element, !isNext );\r
1021 \r
1022                                 sibling.moveChildren( element, !isNext );\r
1023                                 sibling.remove();\r
1024 \r
1025                                 // Now check the last inner child (see two comments above).\r
1026                                 if ( innerSibling )\r
1027                                         mergeSiblings( innerSibling );\r
1028                         }\r
1029                 }\r
1030         }\r
1031 \r
1032         function getElement( style, targetDocument )\r
1033         {\r
1034                 var el;\r
1035 \r
1036                 var def = style._.definition;\r
1037 \r
1038                 var elementName = style.element;\r
1039 \r
1040                 // The "*" element name will always be a span for this function.\r
1041                 if ( elementName == '*' )\r
1042                         elementName = 'span';\r
1043 \r
1044                 // Create the element.\r
1045                 el = new CKEDITOR.dom.element( elementName, targetDocument );\r
1046 \r
1047                 return setupElement( el, style );\r
1048         }\r
1049 \r
1050         function setupElement( el, style )\r
1051         {\r
1052                 var def = style._.definition;\r
1053                 var attributes = def.attributes;\r
1054                 var styles = CKEDITOR.style.getStyleText( def );\r
1055 \r
1056                 // Assign all defined attributes.\r
1057                 if ( attributes )\r
1058                 {\r
1059                         for ( var att in attributes )\r
1060                         {\r
1061                                 el.setAttribute( att, attributes[ att ] );\r
1062                         }\r
1063                 }\r
1064 \r
1065                 // Assign all defined styles.\r
1066                 if ( styles )\r
1067                         el.setAttribute( 'style', styles );\r
1068 \r
1069                 return el;\r
1070         }\r
1071 \r
1072         var varRegex = /#\((.+?)\)/g;\r
1073         function replaceVariables( list, variablesValues )\r
1074         {\r
1075                 for ( var item in list )\r
1076                 {\r
1077                         list[ item ] = list[ item ].replace( varRegex, function( match, varName )\r
1078                                 {\r
1079                                         return variablesValues[ varName ];\r
1080                                 });\r
1081                 }\r
1082         }\r
1083 \r
1084 \r
1085         // Returns an object that can be used for style matching comparison.\r
1086         // Attributes names and values are all lowercased, and the styles get\r
1087         // merged with the style attribute.\r
1088         function getAttributesForComparison( styleDefinition )\r
1089         {\r
1090                 // If we have already computed it, just return it.\r
1091                 var attribs = styleDefinition._AC;\r
1092                 if ( attribs )\r
1093                         return attribs;\r
1094 \r
1095                 attribs = {};\r
1096 \r
1097                 var length = 0;\r
1098 \r
1099                 // Loop through all defined attributes.\r
1100                 var styleAttribs = styleDefinition.attributes;\r
1101                 if ( styleAttribs )\r
1102                 {\r
1103                         for ( var styleAtt in styleAttribs )\r
1104                         {\r
1105                                 length++;\r
1106                                 attribs[ styleAtt ] = styleAttribs[ styleAtt ];\r
1107                         }\r
1108                 }\r
1109 \r
1110                 // Includes the style definitions.\r
1111                 var styleText = CKEDITOR.style.getStyleText( styleDefinition );\r
1112                 if ( styleText )\r
1113                 {\r
1114                         if ( !attribs[ 'style' ] )\r
1115                                 length++;\r
1116                         attribs[ 'style' ] = styleText;\r
1117                 }\r
1118 \r
1119                 // Appends the "length" information to the object.\r
1120                 attribs._length = length;\r
1121 \r
1122                 // Return it, saving it to the next request.\r
1123                 return ( styleDefinition._AC = attribs );\r
1124         }\r
1125 \r
1126         /**\r
1127          * Get the the collection used to compare the elements and attributes,\r
1128          * defined in this style overrides, with other element. All information in\r
1129          * it is lowercased.\r
1130          * @param {CKEDITOR.style} style\r
1131          */\r
1132         function getOverrides( style )\r
1133         {\r
1134                 if ( style._.overrides )\r
1135                         return style._.overrides;\r
1136 \r
1137                 var overrides = ( style._.overrides = {} ),\r
1138                         definition = style._.definition.overrides;\r
1139 \r
1140                 if ( definition )\r
1141                 {\r
1142                         // The override description can be a string, object or array.\r
1143                         // Internally, well handle arrays only, so transform it if needed.\r
1144                         if ( !CKEDITOR.tools.isArray( definition ) )\r
1145                                 definition = [ definition ];\r
1146 \r
1147                         // Loop through all override definitions.\r
1148                         for ( var i = 0 ; i < definition.length ; i++ )\r
1149                         {\r
1150                                 var override = definition[i];\r
1151                                 var elementName;\r
1152                                 var overrideEl;\r
1153                                 var attrs;\r
1154 \r
1155                                 // If can be a string with the element name.\r
1156                                 if ( typeof override == 'string' )\r
1157                                         elementName = override.toLowerCase();\r
1158                                 // Or an object.\r
1159                                 else\r
1160                                 {\r
1161                                         elementName = override.element ? override.element.toLowerCase() : style.element;\r
1162                                         attrs = override.attributes;\r
1163                                 }\r
1164 \r
1165                                 // We can have more than one override definition for the same\r
1166                                 // element name, so we attempt to simply append information to\r
1167                                 // it if it already exists.\r
1168                                 overrideEl = overrides[ elementName ] || ( overrides[ elementName ] = {} );\r
1169 \r
1170                                 if ( attrs )\r
1171                                 {\r
1172                                         // The returning attributes list is an array, because we\r
1173                                         // could have different override definitions for the same\r
1174                                         // attribute name.\r
1175                                         var overrideAttrs = ( overrideEl.attributes = overrideEl.attributes || new Array() );\r
1176                                         for ( var attName in attrs )\r
1177                                         {\r
1178                                                 // Each item in the attributes array is also an array,\r
1179                                                 // where [0] is the attribute name and [1] is the\r
1180                                                 // override value.\r
1181                                                 overrideAttrs.push( [ attName.toLowerCase(), attrs[ attName ] ] );\r
1182                                         }\r
1183                                 }\r
1184                         }\r
1185                 }\r
1186 \r
1187                 return overrides;\r
1188         }\r
1189 \r
1190         function normalizeCssText( unparsedCssText, nativeNormalize )\r
1191         {\r
1192                 var styleText;\r
1193                 if ( nativeNormalize !== false )\r
1194                 {\r
1195                         // Injects the style in a temporary span object, so the browser parses it,\r
1196                         // retrieving its final format.\r
1197                         var temp = new CKEDITOR.dom.element( 'span' );\r
1198                         temp.setAttribute( 'style', unparsedCssText );\r
1199                         styleText = temp.getAttribute( 'style' ) || '';\r
1200                 }\r
1201                 else\r
1202                         styleText = unparsedCssText;\r
1203 \r
1204                 // Shrinking white-spaces around colon and semi-colon (#4147).\r
1205                 // Compensate tail semi-colon.\r
1206                 return styleText.replace( /\s*([;:])\s*/, '$1' )\r
1207                                                          .replace( /([^\s;])$/, '$1;')\r
1208                                                          .replace( /,\s+/g, ',' ) // Trimming spaces after comma (e.g. font-family name)(#4107).\r
1209                                                          .toLowerCase();\r
1210         }\r
1211 \r
1212         function applyStyle( document, remove )\r
1213         {\r
1214                 // Get all ranges from the selection.\r
1215                 var selection = document.getSelection();\r
1216                 var ranges = selection.getRanges();\r
1217                 var func = remove ? this.removeFromRange : this.applyToRange;\r
1218 \r
1219                 // Apply the style to the ranges.\r
1220                 for ( var i = 0 ; i < ranges.length ; i++ )\r
1221                         func.call( this, ranges[ i ] );\r
1222 \r
1223                 // Select the ranges again.\r
1224                 selection.selectRanges( ranges );\r
1225         }\r
1226 })();\r
1227 \r
1228 CKEDITOR.styleCommand = function( style )\r
1229 {\r
1230         this.style = style;\r
1231 };\r
1232 \r
1233 CKEDITOR.styleCommand.prototype.exec = function( editor )\r
1234 {\r
1235         editor.focus();\r
1236 \r
1237         var doc = editor.document;\r
1238 \r
1239         if ( doc )\r
1240         {\r
1241                 if ( this.state == CKEDITOR.TRISTATE_OFF )\r
1242                         this.style.apply( doc );\r
1243                 else if ( this.state == CKEDITOR.TRISTATE_ON )\r
1244                         this.style.remove( doc );\r
1245         }\r
1246 \r
1247         return !!doc;\r
1248 };\r
1249 \r
1250 CKEDITOR.stylesSet = new CKEDITOR.resourceManager( '', 'stylesSet' );\r
1251 \r
1252 // Backward compatibility (#5025).\r
1253 CKEDITOR.addStylesSet = CKEDITOR.tools.bind( CKEDITOR.stylesSet.add, CKEDITOR.stylesSet );\r
1254 CKEDITOR.loadStylesSet = function( name, url, callback )\r
1255         {\r
1256                 CKEDITOR.stylesSet.addExternal( name, url, '' );\r
1257                 CKEDITOR.stylesSet.load( name, callback );\r
1258         };\r