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* FCKeditor - The text editor for Internet - http://www.fckeditor.net
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* Copyright (C) 2003-2009 Frederico Caldeira Knabben
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* Licensed under the terms of any of the following licenses at your
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* - GNU General Public License Version 2 or later (the "GPL")
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* http://www.gnu.org/licenses/gpl.html
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* - GNU Lesser General Public License Version 2.1 or later (the "LGPL")
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* http://www.gnu.org/licenses/lgpl.html
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* - Mozilla Public License Version 1.1 or later (the "MPL")
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* http://www.mozilla.org/MPL/MPL-1.1.html
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* FCKIndentCommand Class: controls block indentation.
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var FCKIndentCommand = function( name, offset )
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this.Offset = offset ;
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this.IndentCSSProperty = FCKConfig.ContentLangDirection.IEquals( 'ltr' ) ? 'marginLeft' : 'marginRight' ;
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FCKIndentCommand._InitIndentModeParameters = function()
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if ( FCKConfig.IndentClasses && FCKConfig.IndentClasses.length > 0 )
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this._UseIndentClasses = true ;
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this._IndentClassMap = {} ;
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for ( var i = 0 ; i < FCKConfig.IndentClasses.length ;i++ )
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this._IndentClassMap[FCKConfig.IndentClasses[i]] = i + 1 ;
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this._ClassNameRegex = new RegExp( '(?:^|\\s+)(' + FCKConfig.IndentClasses.join( '|' ) + ')(?=$|\\s)' ) ;
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this._UseIndentClasses = false ;
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FCKIndentCommand.prototype =
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// Save an undo snapshot before doing anything.
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FCKUndo.SaveUndoStep() ;
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var range = new FCKDomRange( FCK.EditorWindow ) ;
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range.MoveToSelection() ;
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var bookmark = range.CreateBookmark() ;
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// Two cases to handle here: either we're in a list, or not.
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// If we're in a list, then the indent/outdent operations would be done on the list nodes.
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// Otherwise, apply the operation on the nearest block nodes.
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var nearestListBlock = FCKDomTools.GetCommonParentNode( range.StartNode || range.StartContainer ,
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range.EndNode || range.EndContainer,
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if ( nearestListBlock )
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this._IndentList( range, nearestListBlock ) ;
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this._IndentBlock( range ) ;
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range.MoveToBookmark( bookmark ) ;
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FCK.Events.FireEvent( 'OnSelectionChange' ) ;
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// Disabled if not WYSIWYG.
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if ( FCK.EditMode != FCK_EDITMODE_WYSIWYG || ! FCK.EditorWindow )
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return FCK_TRISTATE_DISABLED ;
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// Initialize parameters if not already initialzed.
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if ( FCKIndentCommand._UseIndentClasses == undefined )
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FCKIndentCommand._InitIndentModeParameters() ;
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// If we're not in a list, and the starting block's indentation is zero, and the current
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// command is the outdent command, then we should return FCK_TRISTATE_DISABLED.
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var startContainer = FCKSelection.GetBoundaryParentElement( true ) ;
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var endContainer = FCKSelection.GetBoundaryParentElement( false ) ;
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var listNode = FCKDomTools.GetCommonParentNode( startContainer, endContainer, ['ul','ol'] ) ;
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if ( this.Name.IEquals( 'outdent' ) )
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return FCK_TRISTATE_OFF ;
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var firstItem = FCKTools.GetElementAscensor( startContainer, 'li' ) ;
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if ( !firstItem || !firstItem.previousSibling )
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return FCK_TRISTATE_DISABLED ;
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return FCK_TRISTATE_OFF ;
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if ( ! FCKIndentCommand._UseIndentClasses && this.Name.IEquals( 'indent' ) )
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return FCK_TRISTATE_OFF;
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var path = new FCKElementPath( startContainer ) ;
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var firstBlock = path.Block || path.BlockLimit ;
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return FCK_TRISTATE_DISABLED ;
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if ( FCKIndentCommand._UseIndentClasses )
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var indentClass = firstBlock.className.match( FCKIndentCommand._ClassNameRegex ) ;
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if ( indentClass != null )
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indentClass = indentClass[1] ;
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indentStep = FCKIndentCommand._IndentClassMap[indentClass] ;
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if ( ( this.Name == 'outdent' && indentStep == 0 ) ||
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( this.Name == 'indent' && indentStep == FCKConfig.IndentClasses.length ) )
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return FCK_TRISTATE_DISABLED ;
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return FCK_TRISTATE_OFF ;
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var indent = parseInt( firstBlock.style[this.IndentCSSProperty], 10 ) ;
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if ( isNaN( indent ) )
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return FCK_TRISTATE_DISABLED ;
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return FCK_TRISTATE_OFF ;
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_IndentBlock : function( range )
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var iterator = new FCKDomRangeIterator( range ) ;
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iterator.EnforceRealBlocks = true ;
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range.Expand( 'block_contents' ) ;
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var commonParents = FCKDomTools.GetCommonParents( range.StartContainer, range.EndContainer ) ;
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var nearestParent = commonParents[commonParents.length - 1] ;
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while ( ( block = iterator.GetNextParagraph() ) )
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// We don't want to indent subtrees recursively, so only perform the indent operation
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// if the block itself is the nearestParent, or the block's parent is the nearestParent.
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if ( ! ( block == nearestParent || block.parentNode == nearestParent ) )
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if ( FCKIndentCommand._UseIndentClasses )
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// Transform current class name to indent step index.
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var indentClass = block.className.match( FCKIndentCommand._ClassNameRegex ) ;
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if ( indentClass != null )
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indentClass = indentClass[1] ;
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indentStep = FCKIndentCommand._IndentClassMap[indentClass] ;
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// Operate on indent step index, transform indent step index back to class name.
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if ( this.Name.IEquals( 'outdent' ) )
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else if ( this.Name.IEquals( 'indent' ) )
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indentStep = Math.min( indentStep, FCKConfig.IndentClasses.length ) ;
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indentStep = Math.max( indentStep, 0 ) ;
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var className = block.className.replace( FCKIndentCommand._ClassNameRegex, '' ) ;
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if ( indentStep < 1 )
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block.className = className ;
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block.className = ( className.length > 0 ? className + ' ' : '' ) +
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FCKConfig.IndentClasses[indentStep - 1] ;
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// Offset distance is assumed to be in pixels for now.
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var currentOffset = parseInt( block.style[this.IndentCSSProperty], 10 ) ;
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if ( isNaN( currentOffset ) )
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currentOffset += this.Offset ;
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currentOffset = Math.max( currentOffset, 0 ) ;
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currentOffset = Math.ceil( currentOffset / this.Offset ) * this.Offset ;
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block.style[this.IndentCSSProperty] = currentOffset ? currentOffset + FCKConfig.IndentUnit : '' ;
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if ( block.getAttribute( 'style' ) == '' )
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block.removeAttribute( 'style' ) ;
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_IndentList : function( range, listNode )
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// Our starting and ending points of the range might be inside some blocks under a list item...
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// So before playing with the iterator, we need to expand the block to include the list items.
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var startContainer = range.StartContainer ;
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var endContainer = range.EndContainer ;
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while ( startContainer && startContainer.parentNode != listNode )
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startContainer = startContainer.parentNode ;
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while ( endContainer && endContainer.parentNode != listNode )
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endContainer = endContainer.parentNode ;
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if ( ! startContainer || ! endContainer )
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// Now we can iterate over the individual items on the same tree depth.
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var block = startContainer ;
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var itemsToMove = [] ;
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var stopFlag = false ;
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while ( stopFlag == false )
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if ( block == endContainer )
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itemsToMove.push( block ) ;
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block = block.nextSibling ;
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if ( itemsToMove.length < 1 )
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// Do indent or outdent operations on the array model of the list, not the list's DOM tree itself.
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// The array model demands that it knows as much as possible about the surrounding lists, we need
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// to feed it the further ancestor node that is still a list.
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var listParents = FCKDomTools.GetParents( listNode ) ;
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for ( var i = 0 ; i < listParents.length ; i++ )
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if ( listParents[i].nodeName.IEquals( ['ul', 'ol'] ) )
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listNode = listParents[i] ;
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var indentOffset = this.Name.IEquals( 'indent' ) ? 1 : -1 ;
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var startItem = itemsToMove[0] ;
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var lastItem = itemsToMove[ itemsToMove.length - 1 ] ;
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// Convert the list DOM tree into a one dimensional array.
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var listArray = FCKDomTools.ListToArray( listNode, markerObj ) ;
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// Apply indenting or outdenting on the array.
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var baseIndent = listArray[lastItem._FCK_ListArray_Index].indent ;
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for ( var i = startItem._FCK_ListArray_Index ; i <= lastItem._FCK_ListArray_Index ; i++ )
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listArray[i].indent += indentOffset ;
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for ( var i = lastItem._FCK_ListArray_Index + 1 ; i < listArray.length && listArray[i].indent > baseIndent ; i++ )
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listArray[i].indent += indentOffset ;
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/* For debug use only
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var PrintArray = function( listArray, doc )
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for ( var i = 0 ; i < listArray.length ; i++ )
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for ( var j in listArray[i] )
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if ( j != 'contents' )
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s.push( j + ":" + listArray[i][j] + "; " ) ;
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var docFrag = doc.createDocumentFragment() ;
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var tmpNode = doc.createElement( 'span' ) ;
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for ( var k = 0 ; k < listArray[i][j].length ; k++ )
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docFrag.appendChild( listArray[i][j][k].cloneNode( true ) ) ;
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tmpNode.appendChild( docFrag ) ;
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s.push( j + ":" + tmpNode.innerHTML + "; ") ;
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alert( s.join('') ) ;
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PrintArray( listArray, FCK.EditorDocument ) ;
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// Convert the array back to a DOM forest (yes we might have a few subtrees now).
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// And replace the old list with the new forest.
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var newList = FCKDomTools.ArrayToList( listArray ) ;
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listNode.parentNode.replaceChild( newList.listNode, listNode ) ;
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// Clean up the markers.
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FCKDomTools.ClearAllMarkers( markerObj ) ;