_source/core/dom/node.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 /**\r
   7  * @fileOverview Defines the {@link CKEDITOR.dom.node} class, which is the base\r
   8  *              class for classes that represent DOM nodes.\r
   9  */\r
  10 \r
  11 /**\r
  12  * Base class for classes representing DOM nodes. This constructor may return\r
  13  * and instance of classes that inherits this class, like\r
  14  * {@link CKEDITOR.dom.element} or {@link CKEDITOR.dom.text}.\r
  15  * @augments CKEDITOR.dom.domObject\r
  16  * @param {Object} domNode A native DOM node.\r
  17  * @constructor\r
  18  * @see CKEDITOR.dom.element\r
  19  * @see CKEDITOR.dom.text\r
  20  * @example\r
  21  */\r
  22 CKEDITOR.dom.node = function( domNode )\r
  23 {\r
  24         if ( domNode )\r
  25         {\r
  26                 switch ( domNode.nodeType )\r
  27                 {\r
  28                         case CKEDITOR.NODE_ELEMENT :\r
  29                                 return new CKEDITOR.dom.element( domNode );\r
  30 \r
  31                         case CKEDITOR.NODE_TEXT :\r
  32                                 return new CKEDITOR.dom.text( domNode );\r
  33                 }\r
  34 \r
  35                 // Call the base constructor.\r
  36                 CKEDITOR.dom.domObject.call( this, domNode );\r
  37         }\r
  38 \r
  39         return this;\r
  40 };\r
  41 \r
  42 CKEDITOR.dom.node.prototype = new CKEDITOR.dom.domObject();\r
  43 \r
  44 /**\r
  45  * Element node type.\r
  46  * @constant\r
  47  * @example\r
  48  */\r
  49 CKEDITOR.NODE_ELEMENT = 1;\r
  50 \r
  51 /**\r
  52  * Text node type.\r
  53  * @constant\r
  54  * @example\r
  55  */\r
  56 CKEDITOR.NODE_TEXT = 3;\r
  57 \r
  58 /**\r
  59  * Comment node type.\r
  60  * @constant\r
  61  * @example\r
  62  */\r
  63 CKEDITOR.NODE_COMMENT = 8;\r
  64 \r
  65 CKEDITOR.NODE_DOCUMENT_FRAGMENT = 11;\r
  66 \r
  67 CKEDITOR.POSITION_IDENTICAL = 0;\r
  68 CKEDITOR.POSITION_DISCONNECTED = 1;\r
  69 CKEDITOR.POSITION_FOLLOWING = 2;\r
  70 CKEDITOR.POSITION_PRECEDING = 4;\r
  71 CKEDITOR.POSITION_IS_CONTAINED = 8;\r
  72 CKEDITOR.POSITION_CONTAINS = 16;\r
  73 \r
  74 CKEDITOR.tools.extend( CKEDITOR.dom.node.prototype,\r
  75         /** @lends CKEDITOR.dom.node.prototype */\r
  76         {\r
  77                 /**\r
  78                  * Makes this node child of another element.\r
  79                  * @param {CKEDITOR.dom.element} element The target element to which append\r
  80                  *              this node.\r
  81                  * @returns {CKEDITOR.dom.element} The target element.\r
  82                  * @example\r
  83                  * var p = new CKEDITOR.dom.element( 'p' );\r
  84                  * var strong = new CKEDITOR.dom.element( 'strong' );\r
  85                  * strong.appendTo( p );\r
  86                  *\r
  87                  * // result: "&lt;p&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/p&gt;"\r
  88                  */\r
  89                 appendTo : function( element, toStart )\r
  90                 {\r
  91                         element.append( this, toStart );\r
  92                         return element;\r
  93                 },\r
  94 \r
  95                 clone : function( includeChildren, cloneId )\r
  96                 {\r
  97                         var $clone = this.$.cloneNode( includeChildren );\r
  98 \r
  99                         if ( !cloneId )\r
 100                         {\r
 101                                 var removeIds = function( node )\r
 102                                 {\r
 103                                         if ( node.nodeType != CKEDITOR.NODE_ELEMENT )\r
 104                                                 return;\r
 105 \r
 106                                         node.removeAttribute( 'id', false ) ;\r
 107                                         node.removeAttribute( '_cke_expando', false ) ;\r
 108 \r
 109                                         var childs = node.childNodes;\r
 110                                         for ( var i=0 ; i < childs.length ; i++ )\r
 111                                                 removeIds( childs[ i ] );\r
 112                                 };\r
 113 \r
 114                                 // The "id" attribute should never be cloned to avoid duplication.\r
 115                                 removeIds( $clone );\r
 116                         }\r
 117 \r
 118                         return new CKEDITOR.dom.node( $clone );\r
 119                 },\r
 120 \r
 121                 hasPrevious : function()\r
 122                 {\r
 123                         return !!this.$.previousSibling;\r
 124                 },\r
 125 \r
 126                 hasNext : function()\r
 127                 {\r
 128                         return !!this.$.nextSibling;\r
 129                 },\r
 130 \r
 131                 /**\r
 132                  * Inserts this element after a node.\r
 133                  * @param {CKEDITOR.dom.node} node The that will preceed this element.\r
 134                  * @returns {CKEDITOR.dom.node} The node preceeding this one after\r
 135                  *              insertion.\r
 136                  * @example\r
 137                  * var em = new CKEDITOR.dom.element( 'em' );\r
 138                  * var strong = new CKEDITOR.dom.element( 'strong' );\r
 139                  * strong.insertAfter( em );\r
 140                  *\r
 141                  * // result: "&lt;em&gt;&lt;/em&gt;&lt;strong&gt;&lt;/strong&gt;"\r
 142                  */\r
 143                 insertAfter : function( node )\r
 144                 {\r
 145                         node.$.parentNode.insertBefore( this.$, node.$.nextSibling );\r
 146                         return node;\r
 147                 },\r
 148 \r
 149                 /**\r
 150                  * Inserts this element before a node.\r
 151                  * @param {CKEDITOR.dom.node} node The that will be after this element.\r
 152                  * @returns {CKEDITOR.dom.node} The node being inserted.\r
 153                  * @example\r
 154                  * var em = new CKEDITOR.dom.element( 'em' );\r
 155                  * var strong = new CKEDITOR.dom.element( 'strong' );\r
 156                  * strong.insertBefore( em );\r
 157                  *\r
 158                  * // result: "&lt;strong&gt;&lt;/strong&gt;&lt;em&gt;&lt;/em&gt;"\r
 159                  */\r
 160                 insertBefore : function( node )\r
 161                 {\r
 162                         node.$.parentNode.insertBefore( this.$, node.$ );\r
 163                         return node;\r
 164                 },\r
 165 \r
 166                 insertBeforeMe : function( node )\r
 167                 {\r
 168                         this.$.parentNode.insertBefore( node.$, this.$ );\r
 169                         return node;\r
 170                 },\r
 171 \r
 172                 /**\r
 173                  * Retrieves a uniquely identifiable tree address for this node.\r
 174                  * The tree address returns is an array of integers, with each integer\r
 175                  * indicating a child index of a DOM node, starting from\r
 176                  * document.documentElement.\r
 177                  *\r
 178                  * For example, assuming <body> is the second child from <html> (<head>\r
 179                  * being the first), and we'd like to address the third child under the\r
 180                  * fourth child of body, the tree address returned would be:\r
 181                  * [1, 3, 2]\r
 182                  *\r
 183                  * The tree address cannot be used for finding back the DOM tree node once\r
 184                  * the DOM tree structure has been modified.\r
 185                  */\r
 186                 getAddress : function( normalized )\r
 187                 {\r
 188                         var address = [];\r
 189                         var $documentElement = this.getDocument().$.documentElement;\r
 190                         var node = this.$;\r
 191 \r
 192                         while ( node && node != $documentElement )\r
 193                         {\r
 194                                 var parentNode = node.parentNode;\r
 195                                 var currentIndex = -1;\r
 196 \r
 197                                 if ( parentNode )\r
 198                                 {\r
 199                                         for ( var i = 0 ; i < parentNode.childNodes.length ; i++ )\r
 200                                         {\r
 201                                                 var candidate = parentNode.childNodes[i];\r
 202 \r
 203                                                 if ( normalized &&\r
 204                                                                 candidate.nodeType == 3 &&\r
 205                                                                 candidate.previousSibling &&\r
 206                                                                 candidate.previousSibling.nodeType == 3 )\r
 207                                                 {\r
 208                                                         continue;\r
 209                                                 }\r
 210 \r
 211                                                 currentIndex++;\r
 212 \r
 213                                                 if ( candidate == node )\r
 214                                                         break;\r
 215                                         }\r
 216 \r
 217                                         address.unshift( currentIndex );\r
 218                                 }\r
 219 \r
 220                                 node = parentNode;\r
 221                         }\r
 222 \r
 223                         return address;\r
 224                 },\r
 225 \r
 226                 /**\r
 227                  * Gets the document containing this element.\r
 228                  * @returns {CKEDITOR.dom.document} The document.\r
 229                  * @example\r
 230                  * var element = CKEDITOR.document.getById( 'example' );\r
 231                  * alert( <b>element.getDocument().equals( CKEDITOR.document )</b> );  // "true"\r
 232                  */\r
 233                 getDocument : function()\r
 234                 {\r
 235                         var document = new CKEDITOR.dom.document( this.$.ownerDocument || this.$.parentNode.ownerDocument );\r
 236 \r
 237                         return (\r
 238                         this.getDocument = function()\r
 239                                 {\r
 240                                         return document;\r
 241                                 })();\r
 242                 },\r
 243 \r
 244                 getIndex : function()\r
 245                 {\r
 246                         var $ = this.$;\r
 247 \r
 248                         var currentNode = $.parentNode && $.parentNode.firstChild;\r
 249                         var currentIndex = -1;\r
 250 \r
 251                         while ( currentNode )\r
 252                         {\r
 253                                 currentIndex++;\r
 254 \r
 255                                 if ( currentNode == $ )\r
 256                                         return currentIndex;\r
 257 \r
 258                                 currentNode = currentNode.nextSibling;\r
 259                         }\r
 260 \r
 261                         return -1;\r
 262                 },\r
 263 \r
 264                 getNextSourceNode : function( startFromSibling, nodeType, guard )\r
 265                 {\r
 266                         // If "guard" is a node, transform it in a function.\r
 267                         if ( guard && !guard.call )\r
 268                         {\r
 269                                 var guardNode = guard;\r
 270                                 guard = function( node )\r
 271                                 {\r
 272                                         return !node.equals( guardNode );\r
 273                                 };\r
 274                         }\r
 275 \r
 276                         var node = ( !startFromSibling && this.getFirst && this.getFirst() ),\r
 277                                 parent;\r
 278 \r
 279                         // Guarding when we're skipping the current element( no children or 'startFromSibling' ).\r
 280                         // send the 'moving out' signal even we don't actually dive into.\r
 281                         if ( !node )\r
 282                         {\r
 283                                 if ( this.type == CKEDITOR.NODE_ELEMENT && guard && guard( this, true ) === false )\r
 284                                         return null;\r
 285                                 node = this.getNext();\r
 286                         }\r
 287 \r
 288                         while ( !node && ( parent = ( parent || this ).getParent() ) )\r
 289                         {\r
 290                                 // The guard check sends the "true" paramenter to indicate that\r
 291                                 // we are moving "out" of the element.\r
 292                                 if ( guard && guard( parent, true ) === false )\r
 293                                         return null;\r
 294 \r
 295                                 node = parent.getNext();\r
 296                         }\r
 297 \r
 298                         if ( !node )\r
 299                                 return null;\r
 300 \r
 301                         if ( guard && guard( node ) === false )\r
 302                                 return null;\r
 303 \r
 304                         if ( nodeType && nodeType != node.type )\r
 305                                 return node.getNextSourceNode( false, nodeType, guard );\r
 306 \r
 307                         return node;\r
 308                 },\r
 309 \r
 310                 getPreviousSourceNode : function( startFromSibling, nodeType, guard )\r
 311                 {\r
 312                         if ( guard && !guard.call )\r
 313                         {\r
 314                                 var guardNode = guard;\r
 315                                 guard = function( node )\r
 316                                 {\r
 317                                         return !node.equals( guardNode );\r
 318                                 };\r
 319                         }\r
 320 \r
 321                         var node = ( !startFromSibling && this.getLast && this.getLast() ),\r
 322                                 parent;\r
 323 \r
 324                         // Guarding when we're skipping the current element( no children or 'startFromSibling' ).\r
 325                         // send the 'moving out' signal even we don't actually dive into.\r
 326                         if ( !node )\r
 327                         {\r
 328                                 if ( this.type == CKEDITOR.NODE_ELEMENT && guard && guard( this, true ) === false )\r
 329                                         return null;\r
 330                                 node = this.getPrevious();\r
 331                         }\r
 332 \r
 333                         while ( !node && ( parent = ( parent || this ).getParent() ) )\r
 334                         {\r
 335                                 // The guard check sends the "true" paramenter to indicate that\r
 336                                 // we are moving "out" of the element.\r
 337                                 if ( guard && guard( parent, true ) === false )\r
 338                                         return null;\r
 339 \r
 340                                 node = parent.getPrevious();\r
 341                         }\r
 342 \r
 343                         if ( !node )\r
 344                                 return null;\r
 345 \r
 346                         if ( guard && guard( node ) === false )\r
 347                                 return null;\r
 348 \r
 349                         if ( nodeType && node.type != nodeType )\r
 350                                 return node.getPreviousSourceNode( false, nodeType, guard );\r
 351 \r
 352                         return node;\r
 353                 },\r
 354 \r
 355                 getPrevious : function( evaluator )\r
 356                 {\r
 357                         var previous = this.$, retval;\r
 358                         do\r
 359                         {\r
 360                                 previous = previous.previousSibling;\r
 361                                 retval = previous && new CKEDITOR.dom.node( previous );\r
 362                         }\r
 363                         while ( retval && evaluator && !evaluator( retval ) )\r
 364                         return retval;\r
 365                 },\r
 366 \r
 367                 /**\r
 368                  * Gets the node that follows this element in its parent's child list.\r
 369                  * @param {Function} evaluator Filtering the result node.\r
 370                  * @returns {CKEDITOR.dom.node} The next node or null if not available.\r
 371                  * @example\r
 372                  * var element = CKEDITOR.dom.element.createFromHtml( '&lt;div&gt;&lt;b&gt;Example&lt;/b&gt; &lt;i&gt;next&lt;/i&gt;&lt;/div&gt;' );\r
 373                  * var first = <b>element.getFirst().getNext()</b>;\r
 374                  * alert( first.getName() );  // "i"\r
 375                  */\r
 376                 getNext : function( evaluator )\r
 377                 {\r
 378                         var next = this.$, retval;\r
 379                         do\r
 380                         {\r
 381                                 next = next.nextSibling;\r
 382                                 retval = next && new CKEDITOR.dom.node( next );\r
 383                         }\r
 384                         while ( retval && evaluator && !evaluator( retval ) )\r
 385                         return retval;\r
 386                 },\r
 387 \r
 388                 /**\r
 389                  * Gets the parent element for this node.\r
 390                  * @returns {CKEDITOR.dom.element} The parent element.\r
 391                  * @example\r
 392                  * var node = editor.document.getBody().getFirst();\r
 393                  * var parent = node.<b>getParent()</b>;\r
 394                  * alert( node.getName() );  // "body"\r
 395                  */\r
 396                 getParent : function()\r
 397                 {\r
 398                         var parent = this.$.parentNode;\r
 399                         return ( parent && parent.nodeType == 1 ) ? new CKEDITOR.dom.node( parent ) : null;\r
 400                 },\r
 401 \r
 402                 getParents : function( closerFirst )\r
 403                 {\r
 404                         var node = this;\r
 405                         var parents = [];\r
 406 \r
 407                         do\r
 408                         {\r
 409                                 parents[  closerFirst ? 'push' : 'unshift' ]( node );\r
 410                         }\r
 411                         while ( ( node = node.getParent() ) )\r
 412 \r
 413                         return parents;\r
 414                 },\r
 415 \r
 416                 getCommonAncestor : function( node )\r
 417                 {\r
 418                         if ( node.equals( this ) )\r
 419                                 return this;\r
 420 \r
 421                         if ( node.contains && node.contains( this ) )\r
 422                                 return node;\r
 423 \r
 424                         var start = this.contains ? this : this.getParent();\r
 425 \r
 426                         do\r
 427                         {\r
 428                                 if ( start.contains( node ) )\r
 429                                         return start;\r
 430                         }\r
 431                         while ( ( start = start.getParent() ) );\r
 432 \r
 433                         return null;\r
 434                 },\r
 435 \r
 436                 getPosition : function( otherNode )\r
 437                 {\r
 438                         var $ = this.$;\r
 439                         var $other = otherNode.$;\r
 440 \r
 441                         if ( $.compareDocumentPosition )\r
 442                                 return $.compareDocumentPosition( $other );\r
 443 \r
 444                         // IE and Safari have no support for compareDocumentPosition.\r
 445 \r
 446                         if ( $ == $other )\r
 447                                 return CKEDITOR.POSITION_IDENTICAL;\r
 448 \r
 449                         // Only element nodes support contains and sourceIndex.\r
 450                         if ( this.type == CKEDITOR.NODE_ELEMENT && otherNode.type == CKEDITOR.NODE_ELEMENT )\r
 451                         {\r
 452                                 if ( $.contains )\r
 453                                 {\r
 454                                         if ( $.contains( $other ) )\r
 455                                                 return CKEDITOR.POSITION_CONTAINS + CKEDITOR.POSITION_PRECEDING;\r
 456 \r
 457                                         if ( $other.contains( $ ) )\r
 458                                                 return CKEDITOR.POSITION_IS_CONTAINED + CKEDITOR.POSITION_FOLLOWING;\r
 459                                 }\r
 460 \r
 461                                 if ( 'sourceIndex' in $ )\r
 462                                 {\r
 463                                         return ( $.sourceIndex < 0 || $other.sourceIndex < 0 ) ? CKEDITOR.POSITION_DISCONNECTED :\r
 464                                                 ( $.sourceIndex < $other.sourceIndex ) ? CKEDITOR.POSITION_PRECEDING :\r
 465                                                 CKEDITOR.POSITION_FOLLOWING;\r
 466                                 }\r
 467                         }\r
 468 \r
 469                         // For nodes that don't support compareDocumentPosition, contains\r
 470                         // or sourceIndex, their "address" is compared.\r
 471 \r
 472                         var addressOfThis = this.getAddress(),\r
 473                                 addressOfOther = otherNode.getAddress(),\r
 474                                 minLevel = Math.min( addressOfThis.length, addressOfOther.length );\r
 475 \r
 476                                 // Determinate preceed/follow relationship.\r
 477                                 for ( var i = 0 ; i <= minLevel - 1 ; i++ )\r
 478                                 {\r
 479                                         if ( addressOfThis[ i ] != addressOfOther[ i ] )\r
 480                                         {\r
 481                                                 if ( i < minLevel )\r
 482                                                 {\r
 483                                                         return addressOfThis[ i ] < addressOfOther[ i ] ?\r
 484                                                             CKEDITOR.POSITION_PRECEDING : CKEDITOR.POSITION_FOLLOWING;\r
 485                                                 }\r
 486                                                 break;\r
 487                                         }\r
 488                                 }\r
 489 \r
 490                                 // Determinate contains/contained relationship.\r
 491                                 return ( addressOfThis.length < addressOfOther.length ) ?\r
 492                                                         CKEDITOR.POSITION_CONTAINS + CKEDITOR.POSITION_PRECEDING :\r
 493                                                         CKEDITOR.POSITION_IS_CONTAINED + CKEDITOR.POSITION_FOLLOWING;\r
 494                 },\r
 495 \r
 496                 /**\r
 497                  * Gets the closes ancestor node of a specified node name.\r
 498                  * @param {String} name Node name of ancestor node.\r
 499                  * @param {Boolean} includeSelf (Optional) Whether to include the current\r
 500                  * node in the calculation or not.\r
 501                  * @returns {CKEDITOR.dom.node} Ancestor node.\r
 502                  */\r
 503                 getAscendant : function( name, includeSelf )\r
 504                 {\r
 505                         var $ = this.$;\r
 506 \r
 507                         if ( !includeSelf )\r
 508                                 $ = $.parentNode;\r
 509 \r
 510                         while ( $ )\r
 511                         {\r
 512                                 if ( $.nodeName && $.nodeName.toLowerCase() == name )\r
 513                                         return new CKEDITOR.dom.node( $ );\r
 514 \r
 515                                 $ = $.parentNode;\r
 516                         }\r
 517                         return null;\r
 518                 },\r
 519 \r
 520                 hasAscendant : function( name, includeSelf )\r
 521                 {\r
 522                         var $ = this.$;\r
 523 \r
 524                         if ( !includeSelf )\r
 525                                 $ = $.parentNode;\r
 526 \r
 527                         while ( $ )\r
 528                         {\r
 529                                 if ( $.nodeName && $.nodeName.toLowerCase() == name )\r
 530                                         return true;\r
 531 \r
 532                                 $ = $.parentNode;\r
 533                         }\r
 534                         return false;\r
 535                 },\r
 536 \r
 537                 move : function( target, toStart )\r
 538                 {\r
 539                         target.append( this.remove(), toStart );\r
 540                 },\r
 541 \r
 542                 /**\r
 543                  * Removes this node from the document DOM.\r
 544                  * @param {Boolean} [preserveChildren] Indicates that the children\r
 545                  *              elements must remain in the document, removing only the outer\r
 546                  *              tags.\r
 547                  * @example\r
 548                  * var element = CKEDITOR.dom.element.getById( 'MyElement' );\r
 549                  * <b>element.remove()</b>;\r
 550                  */\r
 551                 remove : function( preserveChildren )\r
 552                 {\r
 553                         var $ = this.$;\r
 554                         var parent = $.parentNode;\r
 555 \r
 556                         if ( parent )\r
 557                         {\r
 558                                 if ( preserveChildren )\r
 559                                 {\r
 560                                         // Move all children before the node.\r
 561                                         for ( var child ; ( child = $.firstChild ) ; )\r
 562                                         {\r
 563                                                 parent.insertBefore( $.removeChild( child ), $ );\r
 564                                         }\r
 565                                 }\r
 566 \r
 567                                 parent.removeChild( $ );\r
 568                         }\r
 569 \r
 570                         return this;\r
 571                 },\r
 572 \r
 573                 replace : function( nodeToReplace )\r
 574                 {\r
 575                         this.insertBefore( nodeToReplace );\r
 576                         nodeToReplace.remove();\r
 577                 },\r
 578 \r
 579                 trim : function()\r
 580                 {\r
 581                         this.ltrim();\r
 582                         this.rtrim();\r
 583                 },\r
 584 \r
 585                 ltrim : function()\r
 586                 {\r
 587                         var child;\r
 588                         while ( this.getFirst && ( child = this.getFirst() ) )\r
 589                         {\r
 590                                 if ( child.type == CKEDITOR.NODE_TEXT )\r
 591                                 {\r
 592                                         var trimmed = CKEDITOR.tools.ltrim( child.getText() ),\r
 593                                                 originalLength = child.getLength();\r
 594 \r
 595                                         if ( !trimmed )\r
 596                                         {\r
 597                                                 child.remove();\r
 598                                                 continue;\r
 599                                         }\r
 600                                         else if ( trimmed.length < originalLength )\r
 601                                         {\r
 602                                                 child.split( originalLength - trimmed.length );\r
 603 \r
 604                                                 // IE BUG: child.remove() may raise JavaScript errors here. (#81)\r
 605                                                 this.$.removeChild( this.$.firstChild );\r
 606                                         }\r
 607                                 }\r
 608                                 break;\r
 609                         }\r
 610                 },\r
 611 \r
 612                 rtrim : function()\r
 613                 {\r
 614                         var child;\r
 615                         while ( this.getLast && ( child = this.getLast() ) )\r
 616                         {\r
 617                                 if ( child.type == CKEDITOR.NODE_TEXT )\r
 618                                 {\r
 619                                         var trimmed = CKEDITOR.tools.rtrim( child.getText() ),\r
 620                                                 originalLength = child.getLength();\r
 621 \r
 622                                         if ( !trimmed )\r
 623                                         {\r
 624                                                 child.remove();\r
 625                                                 continue;\r
 626                                         }\r
 627                                         else if ( trimmed.length < originalLength )\r
 628                                         {\r
 629                                                 child.split( trimmed.length );\r
 630 \r
 631                                                 // IE BUG: child.getNext().remove() may raise JavaScript errors here.\r
 632                                                 // (#81)\r
 633                                                 this.$.lastChild.parentNode.removeChild( this.$.lastChild );\r
 634                                         }\r
 635                                 }\r
 636                                 break;\r
 637                         }\r
 638 \r
 639                         if ( !CKEDITOR.env.ie && !CKEDITOR.env.opera )\r
 640                         {\r
 641                                 child = this.$.lastChild;\r
 642 \r
 643                                 if ( child && child.type == 1 && child.nodeName.toLowerCase() == 'br' )\r
 644                                 {\r
 645                                         // Use "eChildNode.parentNode" instead of "node" to avoid IE bug (#324).\r
 646                                         child.parentNode.removeChild( child ) ;\r
 647                                 }\r
 648                         }\r
 649                 }\r
 650         }\r
 651 );\r