text: ﻿/*
   * FCKeditor - The text editor for Internet - http://www.fckeditor.net
   * Copyright (C) 2003-2009 Frederico Caldeira Knabben
   *
   * == BEGIN LICENSE ==
   *
   * Licensed under the terms of any of the following licenses at your
   * choice:
   *
   *  - GNU General Public License Version 2 or later (the "GPL")
   *    http://www.gnu.org/licenses/gpl.html
   *
   *  - GNU Lesser General Public License Version 2.1 or later (the "LGPL")
   *    http://www.gnu.org/licenses/lgpl.html
   *
   *  - Mozilla Public License Version 1.1 or later (the "MPL")
   *    http://www.mozilla.org/MPL/MPL-1.1.html
   *
   * == END LICENSE ==
   *
   * Utility functions to work with the DOM.
   */
  
  var FCKDomTools =
  {
  	/**
  	 * Move all child nodes from one node to another.
  	 */
  	MoveChildren : function( source, target, toTargetStart )
  	{
  		if ( source == target )
  			return ;
  
  		var eChild ;
  
  		if ( toTargetStart )
  		{
  			while ( (eChild = source.lastChild) )
  				target.insertBefore( source.removeChild( eChild ), target.firstChild ) ;
  		}
  		else
  		{
  			while ( (eChild = source.firstChild) )
  				target.appendChild( source.removeChild( eChild ) ) ;
  		}
  	},
  
  	MoveNode : function( source, target, toTargetStart )
  	{
  		if ( toTargetStart )
  			target.insertBefore( FCKDomTools.RemoveNode( source ), target.firstChild ) ;
  		else
  			target.appendChild( FCKDomTools.RemoveNode( source ) ) ;
  	},
  
  	// Remove blank spaces from the beginning and the end of the contents of a node.
  	TrimNode : function( node )
  	{
  		this.LTrimNode( node ) ;
  		this.RTrimNode( node ) ;
  	},
  
  	LTrimNode : function( node )
  	{
  		var eChildNode ;
  
  		while ( (eChildNode = node.firstChild) )
  		{
  			if ( eChildNode.nodeType == 3 )
  			{
  				var sTrimmed = eChildNode.nodeValue.LTrim() ;
  				var iOriginalLength = eChildNode.nodeValue.length ;
  
  				if ( sTrimmed.length == 0 )
  				{
  					node.removeChild( eChildNode ) ;
  					continue ;
  				}
  				else if ( sTrimmed.length < iOriginalLength )
  				{
  					eChildNode.splitText( iOriginalLength - sTrimmed.length ) ;
  					node.removeChild( node.firstChild ) ;
  				}
  			}
  			break ;
  		}
  	},
  
  	RTrimNode : function( node )
  	{
  		var eChildNode ;
  
  		while ( (eChildNode = node.lastChild) )
  		{
  			if ( eChildNode.nodeType == 3 )
  			{
  				var sTrimmed = eChildNode.nodeValue.RTrim() ;
  				var iOriginalLength = eChildNode.nodeValue.length ;
  
  				if ( sTrimmed.length == 0 )
  				{
  					// If the trimmed text node is empty, just remove it.
  
  					// Use "eChildNode.parentNode" instead of "node" to avoid IE bug (#81).
  					eChildNode.parentNode.removeChild( eChildNode ) ;
  					continue ;
  				}
  				else if ( sTrimmed.length < iOriginalLength )
  				{
  					// If the trimmed text length is less than the original
  					// length, strip all spaces from the end by splitting
  					// the text and removing the resulting useless node.
  
  					eChildNode.splitText( sTrimmed.length ) ;
  					// Use "node.lastChild.parentNode" instead of "node" to avoid IE bug (#81).
  					node.lastChild.parentNode.removeChild( node.lastChild ) ;
  				}
  			}
  			break ;
  		}
  
  		if ( !FCKBrowserInfo.IsIE && !FCKBrowserInfo.IsOpera )
  		{
  			eChildNode = node.lastChild ;
  
  			if ( eChildNode && eChildNode.nodeType == 1 && eChildNode.nodeName.toLowerCase() == 'br' )
  			{
  				// Use "eChildNode.parentNode" instead of "node" to avoid IE bug (#324).
  				eChildNode.parentNode.removeChild( eChildNode ) ;
  			}
  		}
  	},
  
  	RemoveNode : function( node, excludeChildren )
  	{
  		if ( excludeChildren )
  		{
  			// Move all children before the node.
  			var eChild ;
  			while ( (eChild = node.firstChild) )
  				node.parentNode.insertBefore( node.removeChild( eChild ), node ) ;
  		}
  
  		return node.parentNode.removeChild( node ) ;
  	},
  
  	GetFirstChild : function( node, childNames )
  	{
  		// If childNames is a string, transform it in a Array.
  		if ( typeof ( childNames ) == 'string' )
  			childNames = [ childNames ] ;
  
  		var eChild = node.firstChild ;
  		while( eChild )
  		{
  			if ( eChild.nodeType == 1 && eChild.tagName.Equals.apply( eChild.tagName, childNames ) )
  				return eChild ;
  
  			eChild = eChild.nextSibling ;
  		}
  
  		return null ;
  	},
  
  	GetLastChild : function( node, childNames )
  	{
  		// If childNames is a string, transform it in a Array.
  		if ( typeof ( childNames ) == 'string' )
  			childNames = [ childNames ] ;
  
  		var eChild = node.lastChild ;
  		while( eChild )
  		{
  			if ( eChild.nodeType == 1 && ( !childNames || eChild.tagName.Equals( childNames ) ) )
  				return eChild ;
  
  			eChild = eChild.previousSibling ;
  		}
  
  		return null ;
  	},
  
  	/*
  	 * Gets the previous element (nodeType=1) in the source order. Returns
  	 * "null" If no element is found.
  	 *		@param {Object} currentNode The node to start searching from.
  	 *		@param {Boolean} ignoreSpaceTextOnly Sets how text nodes will be
  	 *				handled. If set to "true", only white spaces text nodes
  	 *				will be ignored, while non white space text nodes will stop
  	 *				the search, returning null. If "false" or omitted, all
  	 *				text nodes are ignored.
  	 *		@param {string[]} stopSearchElements An array of element names that
  	 *				will cause the search to stop when found, returning null.
  	 *				May be omitted (or null).
  	 *		@param {string[]} ignoreElements An array of element names that
  	 *				must be ignored during the search.
  	 */
  	GetPreviousSourceElement : function( currentNode, ignoreSpaceTextOnly, stopSearchElements, ignoreElements )
  	{
  		if ( !currentNode )
  			return null ;
  
  		if ( stopSearchElements && currentNode.nodeType == 1 && currentNode.nodeName.IEquals( stopSearchElements ) )
  			return null ;
  
  		if ( currentNode.previousSibling )
  			currentNode = currentNode.previousSibling ;
  		else
  			return this.GetPreviousSourceElement( currentNode.parentNode, ignoreSpaceTextOnly, stopSearchElements, ignoreElements ) ;
  
  		while ( currentNode )
  		{
  			if ( currentNode.nodeType == 1 )
  			{
  				if ( stopSearchElements && currentNode.nodeName.IEquals( stopSearchElements ) )
  					break ;
  
  				if ( !ignoreElements || !currentNode.nodeName.IEquals( ignoreElements ) )
  					return currentNode ;
  			}
  			else if ( ignoreSpaceTextOnly && currentNode.nodeType == 3 && currentNode.nodeValue.RTrim().length > 0 )
  				break ;
  
  			if ( currentNode.lastChild )
  				currentNode = currentNode.lastChild ;
  			else
  				return this.GetPreviousSourceElement( currentNode, ignoreSpaceTextOnly, stopSearchElements, ignoreElements ) ;
  		}
  
  		return null ;
  	},
  
  	/*
  	 * Gets the next element (nodeType=1) in the source order. Returns
  	 * "null" If no element is found.
  	 *		@param {Object} currentNode The node to start searching from.
  	 *		@param {Boolean} ignoreSpaceTextOnly Sets how text nodes will be
  	 *				handled. If set to "true", only white spaces text nodes
  	 *				will be ignored, while non white space text nodes will stop
  	 *				the search, returning null. If "false" or omitted, all
  	 *				text nodes are ignored.
  	 *		@param {string[]} stopSearchElements An array of element names that
  	 *				will cause the search to stop when found, returning null.
  	 *				May be omitted (or null).
  	 *		@param {string[]} ignoreElements An array of element names that
  	 *				must be ignored during the search.
  	 */
  	GetNextSourceElement : function( currentNode, ignoreSpaceTextOnly, stopSearchElements, ignoreElements, startFromSibling )
  	{
  		while( ( currentNode = this.GetNextSourceNode( currentNode, startFromSibling ) ) )	// Only one "=".
  		{
  			if ( currentNode.nodeType == 1 )
  			{
  				if ( stopSearchElements && currentNode.nodeName.IEquals( stopSearchElements ) )
  					break ;
  
  				if ( ignoreElements && currentNode.nodeName.IEquals( ignoreElements ) )
  					return this.GetNextSourceElement( currentNode, ignoreSpaceTextOnly, stopSearchElements, ignoreElements ) ;
  
  				return currentNode ;
  			}
  			else if ( ignoreSpaceTextOnly && currentNode.nodeType == 3 && currentNode.nodeValue.RTrim().length > 0 )
  				break ;
  		}
  
  		return null ;
  	},
  
  	/*
  	 * Get the next DOM node available in source order.
  	 */
  	GetNextSourceNode : function( currentNode, startFromSibling, nodeType, stopSearchNode )
  	{
  		if ( !currentNode )
  			return null ;
  
  		var node ;
  
  		if ( !startFromSibling && currentNode.firstChild )
  			node = currentNode.firstChild ;
  		else
  		{
  			if ( stopSearchNode && currentNode == stopSearchNode )
  				return null ;
  
  			node = currentNode.nextSibling ;
  
  			if ( !node && ( !stopSearchNode || stopSearchNode != currentNode.parentNode ) )
  				return this.GetNextSourceNode( currentNode.parentNode, true, nodeType, stopSearchNode ) ;
  		}
  
  		if ( nodeType && node && node.nodeType != nodeType )
  			return this.GetNextSourceNode( node, false, nodeType, stopSearchNode ) ;
  
  		return node ;
  	},
  
  	/*
  	 * Get the next DOM node available in source order.
  	 */
  	GetPreviousSourceNode : function( currentNode, startFromSibling, nodeType, stopSearchNode )
  	{
  		if ( !currentNode )
  			return null ;
  
  		var node ;
  
  		if ( !startFromSibling && currentNode.lastChild )
  			node = currentNode.lastChild ;
  		else
  		{
  			if ( stopSearchNode && currentNode == stopSearchNode )
  				return null ;
  
  			node = currentNode.previousSibling ;
  
  			if ( !node && ( !stopSearchNode || stopSearchNode != currentNode.parentNode ) )
  				return this.GetPreviousSourceNode( currentNode.parentNode, true, nodeType, stopSearchNode ) ;
  		}
  
  		if ( nodeType && node && node.nodeType != nodeType )
  			return this.GetPreviousSourceNode( node, false, nodeType, stopSearchNode ) ;
  
  		return node ;
  	},
  
  	// Inserts a element after a existing one.
  	InsertAfterNode : function( existingNode, newNode )
  	{
  		return existingNode.parentNode.insertBefore( newNode, existingNode.nextSibling ) ;
  	},
  
  	GetParents : function( node )
  	{
  		var parents = new Array() ;
  
  		while ( node )
  		{
  			parents.unshift( node ) ;
  			node = node.parentNode ;
  		}
  
  		return parents ;
  	},
  
  	GetCommonParents : function( node1, node2 )
  	{
  		var p1 = this.GetParents( node1 ) ;
  		var p2 = this.GetParents( node2 ) ;
  		var retval = [] ;
  		for ( var i = 0 ; i < p1.length ; i++ )
  		{
  			if ( p1[i] == p2[i] )
  				retval.push( p1[i] ) ;
  		}
  		return retval ;
  	},
  
  	GetCommonParentNode : function( node1, node2, tagList )
  	{
  		var tagMap = {} ;
  		if ( ! tagList.pop )
  			tagList = [ tagList ] ;
  		while ( tagList.length > 0 )
  			tagMap[tagList.pop().toLowerCase()] = 1 ;
  
  		var commonParents = this.GetCommonParents( node1, node2 ) ;
  		var currentParent = null ;
  		while ( ( currentParent = commonParents.pop() ) )
  		{
  			if ( tagMap[currentParent.nodeName.toLowerCase()] )
  				return currentParent ;
  		}
  		return null ;
  	},
  
  	GetIndexOf : function( node )
  	{
  		var currentNode = node.parentNode ? node.parentNode.firstChild : null ;
  		var currentIndex = -1 ;
  
  		while ( currentNode )
  		{
  			currentIndex++ ;
  
  			if ( currentNode == node )
  				return currentIndex ;
  
  			currentNode = currentNode.nextSibling ;
  		}
  
  		return -1 ;
  	},
  
  	PaddingNode : null,
  
  	EnforcePaddingNode : function( doc, tagName )
  	{
  		// In IE it can happen when the page is reloaded that doc or doc.body is null, so exit here
  		try
  		{
  			if ( !doc || !doc.body )
  				return ;
  		}
  		catch (e)
  		{
  			return ;
  		}
  
  		this.CheckAndRemovePaddingNode( doc, tagName, true ) ;
  		try
  		{
  			if ( doc.body.lastChild && ( doc.body.lastChild.nodeType != 1
  					|| doc.body.lastChild.tagName.toLowerCase() == tagName.toLowerCase() ) )
  				return ;
  		}
  		catch (e)
  		{
  			return ;
  		}
  
  		var node = doc.createElement( tagName ) ;
  		if ( FCKBrowserInfo.IsGecko && FCKListsLib.NonEmptyBlockElements[ tagName ] )
  			FCKTools.AppendBogusBr( node ) ;
  		this.PaddingNode = node ;
  		if ( doc.body.childNodes.length == 1
  				&& doc.body.firstChild.nodeType == 1
  				&& doc.body.firstChild.tagName.toLowerCase() == 'br'
  				&& ( doc.body.firstChild.getAttribute( '_moz_dirty' ) != null
  					|| doc.body.firstChild.getAttribute( 'type' ) == '_moz' ) )
  			doc.body.replaceChild( node, doc.body.firstChild ) ;
  		else
  			doc.body.appendChild( node ) ;
  	},
  
  	CheckAndRemovePaddingNode : function( doc, tagName, dontRemove )
  	{
  		var paddingNode = this.PaddingNode ;
  		if ( ! paddingNode )
  			return ;
  
  		// If the padding node is changed, remove its status as a padding node.
  		try
  		{
  			if ( paddingNode.parentNode != doc.body
  				|| paddingNode.tagName.toLowerCase() != tagName
  				|| ( paddingNode.childNodes.length > 1 )
  				|| ( paddingNode.firstChild && paddingNode.firstChild.nodeValue != '\xa0'
  					&& String(paddingNode.firstChild.tagName).toLowerCase() != 'br' ) )
  			{
  				this.PaddingNode = null ;
  				return ;
  			}
  		}
  		catch (e)
  		{
  				this.PaddingNode = null ;
  				return ;
  		}
  
  		// Now we're sure the padding node exists, and it is unchanged, and it
  		// isn't the only node in doc.body, remove it.
  		if ( !dontRemove )
  		{
  			if ( paddingNode.parentNode.childNodes.length > 1 )
  				paddingNode.parentNode.removeChild( paddingNode ) ;
  			this.PaddingNode = null ;
  		}
  	},
  
  	HasAttribute : function( element, attributeName )
  	{
  		if ( element.hasAttribute )
  			return element.hasAttribute( attributeName ) ;
  		else
  		{
  			var att = element.attributes[ attributeName ] ;
  			return ( att != undefined && att.specified ) ;
  		}
  	},
  
  	/**
  	 * Checks if an element has "specified" attributes.
  	 */
  	HasAttributes : function( element )
  	{
  		var attributes = element.attributes ;
  
  		for ( var i = 0 ; i < attributes.length ; i++ )
  		{
  			if ( FCKBrowserInfo.IsIE && attributes[i].nodeName == 'class' )
  			{
  				// IE has a strange bug. If calling removeAttribute('className'),
  				// the attributes collection will still contain the "class"
  				// attribute, which will be marked as "specified", even if the
  				// outerHTML of the element is not displaying the class attribute.
  				// Note : I was not able to reproduce it outside the editor,
  				// but I've faced it while working on the TC of #1391.
  				if ( element.className.length > 0 )
  					return true ;
  			}
  			else if ( attributes[i].specified )
  				return true ;
  		}
  
  		return false ;
  	},
  
  	/**
  	 * Remove an attribute from an element.
  	 */
  	RemoveAttribute : function( element, attributeName )
  	{
  		if ( FCKBrowserInfo.IsIE && attributeName.toLowerCase() == 'class' )
  			attributeName = 'className' ;
  
  		return element.removeAttribute( attributeName, 0 ) ;
  	},
  
  	/**
  	 * Removes an array of attributes from an element
  	 */
  	RemoveAttributes : function (element, aAttributes )
  	{
  		for ( var i = 0 ; i < aAttributes.length ; i++ )
  			this.RemoveAttribute( element, aAttributes[i] );
  	},
  
  	GetAttributeValue : function( element, att )
  	{
  		var attName = att ;
  
  		if ( typeof att == 'string' )
  			att = element.attributes[ att ] ;
  		else
  			attName = att.nodeName ;
  
  		if ( att && att.specified )
  		{
  			// IE returns "null" for the nodeValue of a "style" attribute.
  			if ( attName == 'style' )
  				return element.style.cssText ;
  			// There are two cases when the nodeValue must be used:
  			//		- for the "class" attribute (all browsers).
  			//		- for events attributes (IE only).
  			else if ( attName == 'class' || attName.indexOf('on') == 0 )
  				return att.nodeValue ;
  			else
  			{
  				// Use getAttribute to get its value  exactly as it is
  				// defined.
  				return element.getAttribute( attName, 2 ) ;
  			}
  		}
  		return null ;
  	},
  
  	/**
  	 * Checks whether one element contains the other.
  	 */
  	Contains : function( mainElement, otherElement )
  	{
  		// IE supports contains, but only for element nodes.
  		if ( mainElement.contains && otherElement.nodeType == 1 )
  			return mainElement.contains( otherElement ) ;
  
  		while ( ( otherElement = otherElement.parentNode ) )	// Only one "="
  		{
  			if ( otherElement == mainElement )
  				return true ;
  		}
  		return false ;
  	},
  
  	/**
  	 * Breaks a parent element in the position of one of its contained elements.
  	 * For example, in the following case:
  	 *		<b>This <i>is some<span /> sample</i> test text</b>
  	 * If element = <span />, we have these results:
  	 *		<b>This <i>is some</i><span /><i> sample</i> test text</b>			(If parent = <i>)
  	 *		<b>This <i>is some</i></b><span /><b><i> sample</i> test text</b>	(If parent = <b>)
  	 */
  	BreakParent : function( element, parent, reusableRange )
  	{
  		var range = reusableRange || new FCKDomRange( FCKTools.GetElementWindow( element ) ) ;
  
  		// We'll be extracting part of this element, so let's use our
  		// range to get the correct piece.
  		range.SetStart( element, 4 ) ;
  		range.SetEnd( parent, 4 ) ;
  
  		// Extract it.
  		var docFrag = range.ExtractContents() ;
  
  		// Move the element outside the broken element.
  		range.InsertNode( element.parentNode.removeChild( element ) ) ;
  
  		// Re-insert the extracted piece after the element.
  		docFrag.InsertAfterNode( element ) ;
  
  		range.Release( !!reusableRange ) ;
  	},
  
  	/**
  	 * Retrieves a uniquely identifiable tree address of a DOM tree node.
  	 * The tree address returns is an array of integers, with each integer
  	 * indicating a child index from a DOM tree node, starting from
  	 * document.documentElement.
  	 *
  	 * For example, assuming <body> is the second child from <html> (<head>
  	 * being the first), and we'd like to address the third child under the
  	 * fourth child of body, the tree address returned would be:
  	 * [1, 3, 2]
  	 *
  	 * The tree address cannot be used for finding back the DOM tree node once
  	 * the DOM tree structure has been modified.
  	 */
  	GetNodeAddress : function( node, normalized )
  	{
  		var retval = [] ;
  		while ( node && node != FCKTools.GetElementDocument( node ).documentElement )
  		{
  			var parentNode = node.parentNode ;
  			var currentIndex = -1 ;
  			for( var i = 0 ; i < parentNode.childNodes.length ; i++ )
  			{
  				var candidate = parentNode.childNodes[i] ;
  				if ( normalized === true &&
  						candidate.nodeType == 3 &&
  						candidate.previousSibling &&
  						candidate.previousSibling.nodeType == 3 )
  					continue;
  				currentIndex++ ;
  				if ( parentNode.childNodes[i] == node )
  					break ;
  			}
  			retval.unshift( currentIndex ) ;
  			node = node.parentNode ;
  		}
  		return retval ;
  	},
  
  	/**
  	 * The reverse transformation of FCKDomTools.GetNodeAddress(). This
  	 * function returns the DOM node pointed to by its index address.
  	 */
  	GetNodeFromAddress : function( doc, addr, normalized )
  	{
  		var cursor = doc.documentElement ;
  		for ( var i = 0 ; i < addr.length ; i++ )
  		{
  			var target = addr[i] ;
  			if ( ! normalized )
  			{
  				cursor = cursor.childNodes[target] ;
  				continue ;
  			}
  
  			var currentIndex = -1 ;
  			for (var j = 0 ; j < cursor.childNodes.length ; j++ )
  			{
  				var candidate = cursor.childNodes[j] ;
  				if ( normalized === true &&
  						candidate.nodeType == 3 &&
  						candidate.previousSibling &&
  						candidate.previousSibling.nodeType == 3 )
  					continue ;
  				currentIndex++ ;
  				if ( currentIndex == target )
  				{
  					cursor = candidate ;
  					break ;
  				}
  			}
  		}
  		return cursor ;
  	},
  
  	CloneElement : function( element )
  	{
  		element = element.cloneNode( false ) ;
  
  		// The "id" attribute should never be cloned to avoid duplication.
  		element.removeAttribute( 'id', false ) ;
  
  		return element ;
  	},
  
  	ClearElementJSProperty : function( element, attrName )
  	{
  		if ( FCKBrowserInfo.IsIE )
  			element.removeAttribute( attrName ) ;
  		else
  			delete element[attrName] ;
  	},
  
  	SetElementMarker : function ( markerObj, element, attrName, value)
  	{
  		var id = String( parseInt( Math.random() * 0xffffffff, 10 ) ) ;
  		element._FCKMarkerId = id ;
  		element[attrName] = value ;
  		if ( ! markerObj[id] )
  			markerObj[id] = { 'element' : element, 'markers' : {} } ;
  		markerObj[id]['markers'][attrName] = value ;
  	},
  
  	ClearElementMarkers : function( markerObj, element, clearMarkerObj )
  	{
  		var id = element._FCKMarkerId ;
  		if ( ! id )
  			return ;
  		this.ClearElementJSProperty( element, '_FCKMarkerId' ) ;
  		for ( var j in markerObj[id]['markers'] )
  			this.ClearElementJSProperty( element, j ) ;
  		if ( clearMarkerObj )
  			delete markerObj[id] ;
  	},
  
  	ClearAllMarkers : function( markerObj )
  	{
  		for ( var i in markerObj )
  			this.ClearElementMarkers( markerObj, markerObj[i]['element'], true ) ;
  	},
  
  	/**
  	 * Convert a DOM list tree into a data structure that is easier to
  	 * manipulate. This operation should be non-intrusive in the sense that it
  	 * does not change the DOM tree, with the exception that it may add some
  	 * markers to the list item nodes when markerObj is specified.
  	 */
  	ListToArray : function( listNode, markerObj, baseArray, baseIndentLevel, grandparentNode )
  	{
  		if ( ! listNode.nodeName.IEquals( ['ul', 'ol'] ) )
  			return [] ;
  
  		if ( ! baseIndentLevel )
  			baseIndentLevel = 0 ;
  		if ( ! baseArray )
  			baseArray = [] ;
  		// Iterate over all list items to get their contents and look for inner lists.
  		for ( var i = 0 ; i < listNode.childNodes.length ; i++ )
  		{
  			var listItem = listNode.childNodes[i] ;
  			if ( ! listItem.nodeName.IEquals( 'li' ) )
  				continue ;
  			var itemObj = { 'parent' : listNode, 'indent' : baseIndentLevel, 'contents' : [] } ;
  			if ( ! grandparentNode )
  			{
  				itemObj.grandparent = listNode.parentNode ;
  				if ( itemObj.grandparent && itemObj.grandparent.nodeName.IEquals( 'li' ) )
  					itemObj.grandparent = itemObj.grandparent.parentNode ;
  			}
  			else
  				itemObj.grandparent = grandparentNode ;
  			if ( markerObj )
  				this.SetElementMarker( markerObj, listItem, '_FCK_ListArray_Index', baseArray.length ) ;
  			baseArray.push( itemObj ) ;
  			for ( var j = 0 ; j < listItem.childNodes.length ; j++ )
  			{
  				var child = listItem.childNodes[j] ;
  				if ( child.nodeName.IEquals( ['ul', 'ol'] ) )
  					// Note the recursion here, it pushes inner list items with
  					// +1 indentation in the correct order.
  					this.ListToArray( child, markerObj, baseArray, baseIndentLevel + 1, itemObj.grandparent ) ;
  				else
  					itemObj.contents.push( child ) ;
  			}
  		}
  		return baseArray ;
  	},
  
  	// Convert our internal representation of a list back to a DOM forest.
  	ArrayToList : function( listArray, markerObj, baseIndex )
  	{
  		if ( baseIndex == undefined )
  			baseIndex = 0 ;
  		if ( ! listArray || listArray.length < baseIndex + 1 )
  			return null ;
  		var doc = FCKTools.GetElementDocument( listArray[baseIndex].parent ) ;
  		var retval = doc.createDocumentFragment() ;
  		var rootNode = null ;
  		var currentIndex = baseIndex ;
  		var indentLevel = Math.max( listArray[baseIndex].indent, 0 ) ;
  		var currentListItem = null ;
  		while ( true )
  		{
  			var item = listArray[currentIndex] ;
  			if ( item.indent == indentLevel )
  			{
  				if ( ! rootNode || listArray[currentIndex].parent.nodeName != rootNode.nodeName )
  				{
  					rootNode = listArray[currentIndex].parent.cloneNode( false ) ;
  					retval.appendChild( rootNode ) ;
  				}
  				currentListItem = doc.createElement( 'li' ) ;
  				rootNode.appendChild( currentListItem ) ;
  				for ( var i = 0 ; i < item.contents.length ; i++ )
  					currentListItem.appendChild( item.contents[i].cloneNode( true ) ) ;
  				currentIndex++ ;
  			}
  			else if ( item.indent == Math.max( indentLevel, 0 ) + 1 )
  			{
  				var listData = this.ArrayToList( listArray, null, currentIndex ) ;
  				currentListItem.appendChild( listData.listNode ) ;
  				currentIndex = listData.nextIndex ;
  			}
  			else if ( item.indent == -1 && baseIndex == 0 && item.grandparent )
  			{
  				var currentListItem ;
  				if ( item.grandparent.nodeName.IEquals( ['ul', 'ol'] ) )
  					currentListItem = doc.createElement( 'li' ) ;
  				else
  				{
  					if ( FCKConfig.EnterMode.IEquals( ['div', 'p'] ) && ! item.grandparent.nodeName.IEquals( 'td' ) )
  						currentListItem = doc.createElement( FCKConfig.EnterMode ) ;
  					else
  						currentListItem = doc.createDocumentFragment() ;
  				}
  				for ( var i = 0 ; i < item.contents.length ; i++ )
  					currentListItem.appendChild( item.contents[i].cloneNode( true ) ) ;
  				if ( currentListItem.nodeType == 11 )
  				{
  					if ( currentListItem.lastChild &&
  							currentListItem.lastChild.getAttribute &&
  							currentListItem.lastChild.getAttribute( 'type' ) == '_moz' )
  						currentListItem.removeChild( currentListItem.lastChild );
  					currentListItem.appendChild( doc.createElement( 'br' ) ) ;
  				}
  				if ( currentListItem.nodeName.IEquals( FCKConfig.EnterMode ) && currentListItem.firstChild )
  				{
  					this.TrimNode( currentListItem ) ;
  					if ( FCKListsLib.BlockBoundaries[currentListItem.firstChild.nodeName.toLowerCase()] )
  					{
  						var tmp = doc.createDocumentFragment() ;
  						while ( currentListItem.firstChild )
  							tmp.appendChild( currentListItem.removeChild( currentListItem.firstChild ) ) ;
  						currentListItem = tmp ;
  					}
  				}
  				if ( FCKBrowserInfo.IsGeckoLike && currentListItem.nodeName.IEquals( ['div', 'p'] ) )
  					FCKTools.AppendBogusBr( currentListItem ) ;
  				retval.appendChild( currentListItem ) ;
  				rootNode = null ;
  				currentIndex++ ;
  			}
  			else
  				return null ;
  
  			if ( listArray.length <= currentIndex || Math.max( listArray[currentIndex].indent, 0 ) < indentLevel )
  			{
  				break ;
  			}
  		}
  
  		// Clear marker attributes for the new list tree made of cloned nodes, if any.
  		if ( markerObj )
  		{
  			var currentNode = retval.firstChild ;
  			while ( currentNode )
  			{
  				if ( currentNode.nodeType == 1 )
  					this.ClearElementMarkers( markerObj, currentNode ) ;
  				currentNode = this.GetNextSourceNode( currentNode ) ;
  			}
  		}
  
  		return { 'listNode' : retval, 'nextIndex' : currentIndex } ;
  	},
  
  	/**
  	 * Get the next sibling node for a node. If "includeEmpties" is false,
  	 * only element or non empty text nodes are returned.
  	 */
  	GetNextSibling : function( node, includeEmpties )
  	{
  		node = node.nextSibling ;
  
  		while ( node && !includeEmpties && node.nodeType != 1 && ( node.nodeType != 3 || node.nodeValue.length == 0 ) )
  			node = node.nextSibling ;
  
  		return node ;
  	},
  
  	/**
  	 * Get the previous sibling node for a node. If "includeEmpties" is false,
  	 * only element or non empty text nodes are returned.
  	 */
  	GetPreviousSibling : function( node, includeEmpties )
  	{
  		node = node.previousSibling ;
  
  		while ( node && !includeEmpties && node.nodeType != 1 && ( node.nodeType != 3 || node.nodeValue.length == 0 ) )
  			node = node.previousSibling ;
  
  		return node ;
  	},
  
  	/**
  	 * Checks if an element has no "useful" content inside of it
  	 * node tree. No "useful" content means empty text node or a signle empty
  	 * inline node.
  	 * elementCheckCallback may point to a function that returns a boolean
  	 * indicating that a child element must be considered in the element check.
  	 */
  	CheckIsEmptyElement : function( element, elementCheckCallback )
  	{
  		var child = element.firstChild ;
  		var elementChild ;
  
  		while ( child )
  		{
  			if ( child.nodeType == 1 )
  			{
  				if ( elementChild || !FCKListsLib.InlineNonEmptyElements[ child.nodeName.toLowerCase() ] )
  					return false ;
  
  				if ( !elementCheckCallback || elementCheckCallback( child ) === true )
  					elementChild = child ;
  			}
  			else if ( child.nodeType == 3 && child.nodeValue.length > 0 )
  				return false ;
  
  			child = child.nextSibling ;
  		}
  
  		return elementChild ? this.CheckIsEmptyElement( elementChild, elementCheckCallback ) : true ;
  	},
  
  	SetElementStyles : function( element, styleDict )
  	{
  		var style = element.style ;
  		for ( var styleName in styleDict )
  			style[ styleName ] = styleDict[ styleName ] ;
  	},
  
  	SetOpacity : function( element, opacity )
  	{
  		if ( FCKBrowserInfo.IsIE )
  		{
  			opacity = Math.round( opacity * 100 ) ;
  			element.style.filter = ( opacity > 100 ? '' : 'progid:DXImageTransform.Microsoft.Alpha(opacity=' + opacity + ')' ) ;
  		}
  		else
  			element.style.opacity = opacity ;
  	},
  
  	GetCurrentElementStyle : function( element, propertyName )
  	{
  		if ( FCKBrowserInfo.IsIE )
  			return element.currentStyle[ propertyName ] ;
  		else
  			return element.ownerDocument.defaultView.getComputedStyle( element, '' ).getPropertyValue( propertyName ) ;
  	},
  
  	GetPositionedAncestor : function( element )
  	{
  		var currentElement = element ;
  
  		while ( currentElement != FCKTools.GetElementDocument( currentElement ).documentElement )
  		{
  			if ( this.GetCurrentElementStyle( currentElement, 'position' ) != 'static' )
  				return currentElement ;
  
  			if ( currentElement == FCKTools.GetElementDocument( currentElement ).documentElement
  					&& currentWindow != w )
  				currentElement = currentWindow.frameElement ;
  			else
  				currentElement = currentElement.parentNode ;
  		}
  
  		return null ;
  	},
  
  	/**
  	 * Current implementation for ScrollIntoView (due to #1462 and #2279). We
  	 * don't have a complete implementation here, just the things that fit our
  	 * needs.
  	 */
  	ScrollIntoView : function( element, alignTop )
  	{
  		// Get the element window.
  		var window = FCKTools.GetElementWindow( element ) ;
  		var windowHeight = FCKTools.GetViewPaneSize( window ).Height ;
  
  		// Starts the offset that will be scrolled with the negative value of
  		// the visible window height.
  		var offset = windowHeight * -1 ;
  
  		// Appends the height it we are about to align the bottoms.
  		if ( alignTop === false )
  		{
  			offset += element.offsetHeight || 0 ;
  
  			// Consider the margin in the scroll, which is ok for our current
  			// needs, but needs investigation if we will be using this function
  			// in other places.
  			offset += parseInt( this.GetCurrentElementStyle( element, 'marginBottom' ) || 0, 10 ) || 0 ;
  		}
  
  		// Appends the offsets for the entire element hierarchy.
  		var elementPosition = FCKTools.GetDocumentPosition( window, element ) ;
  		offset += elementPosition.y ;
  
  		// Scroll the window to the desired position, if not already visible.
  		var currentScroll = FCKTools.GetScrollPosition( window ).Y ;
  		if ( offset > 0 && ( offset > currentScroll || offset < currentScroll - windowHeight ) )
  			window.scrollTo( 0, offset ) ;
  	},
  
  	/**
  	 * Check if the element can be edited inside the browser.
  	 */
  	CheckIsEditable : function( element )
  	{
  		// Get the element name.
  		var nodeName = element.nodeName.toLowerCase() ;
  
  		// Get the element DTD (defaults to span for unknown elements).
  		var childDTD = FCK.DTD[ nodeName ] || FCK.DTD.span ;
  
  		// In the DTD # == text node.
  		return ( childDTD['#'] && !FCKListsLib.NonEditableElements[ nodeName ] ) ;
  	},
  
  	GetSelectedDivContainers : function()
  	{
  		var currentBlocks = [] ;
  		var range = new FCKDomRange( FCK.EditorWindow ) ;
  		range.MoveToSelection() ;
  
  		var startNode = range.GetTouchedStartNode() ;
  		var endNode = range.GetTouchedEndNode() ;
  		var currentNode = startNode ;
  
  		if ( startNode == endNode )
  		{
  			while ( endNode.nodeType == 1 && endNode.lastChild )
  				endNode = endNode.lastChild ;
  			endNode = FCKDomTools.GetNextSourceNode( endNode ) ;
  		}
  
  		while ( currentNode && currentNode != endNode )
  		{
  			if ( currentNode.nodeType != 3 || !/^[ \t\n]*$/.test( currentNode.nodeValue ) )
  			{
  				var path = new FCKElementPath( currentNode ) ;
  				var blockLimit = path.BlockLimit ;
  				if ( blockLimit && blockLimit.nodeName.IEquals( 'div' ) && currentBlocks.IndexOf( blockLimit ) == -1 )
  					currentBlocks.push( blockLimit ) ;
  			}
  
  			currentNode = FCKDomTools.GetNextSourceNode( currentNode ) ;
  		}
  
  		return currentBlocks ;
  	}
  } ;
  