fckdomrange.js
上传用户:dbstep
上传日期:2022-08-06
资源大小:2803k
文件大小:27k
源码类别:
WEB源码(ASP,PHP,...)
开发平台:
ASP/ASPX
- /*
- * 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 ==
- *
- * Class for working with a selection range, much like the W3C DOM Range, but
- * it is not intended to be an implementation of the W3C interface.
- */
- var FCKDomRange = function( sourceWindow )
- {
- this.Window = sourceWindow ;
- this._Cache = {} ;
- }
- FCKDomRange.prototype =
- {
- _UpdateElementInfo : function()
- {
- var innerRange = this._Range ;
- if ( !innerRange )
- this.Release( true ) ;
- else
- {
- // For text nodes, the node itself is the StartNode.
- var eStart = innerRange.startContainer ;
- var oElementPath = new FCKElementPath( eStart ) ;
- this.StartNode = eStart.nodeType == 3 ? eStart : eStart.childNodes[ innerRange.startOffset ] ;
- this.StartContainer = eStart ;
- this.StartBlock = oElementPath.Block ;
- this.StartBlockLimit = oElementPath.BlockLimit ;
- if ( innerRange.collapsed )
- {
- this.EndNode = this.StartNode ;
- this.EndContainer = this.StartContainer ;
- this.EndBlock = this.StartBlock ;
- this.EndBlockLimit = this.StartBlockLimit ;
- }
- else
- {
- var eEnd = innerRange.endContainer ;
- if ( eStart != eEnd )
- oElementPath = new FCKElementPath( eEnd ) ;
- // The innerRange.endContainer[ innerRange.endOffset ] is not
- // usually part of the range, but the marker for the range end. So,
- // let's get the previous available node as the real end.
- var eEndNode = eEnd ;
- if ( innerRange.endOffset == 0 )
- {
- while ( eEndNode && !eEndNode.previousSibling )
- eEndNode = eEndNode.parentNode ;
- if ( eEndNode )
- eEndNode = eEndNode.previousSibling ;
- }
- else if ( eEndNode.nodeType == 1 )
- eEndNode = eEndNode.childNodes[ innerRange.endOffset - 1 ] ;
- this.EndNode = eEndNode ;
- this.EndContainer = eEnd ;
- this.EndBlock = oElementPath.Block ;
- this.EndBlockLimit = oElementPath.BlockLimit ;
- }
- }
- this._Cache = {} ;
- },
- CreateRange : function()
- {
- return new FCKW3CRange( this.Window.document ) ;
- },
- DeleteContents : function()
- {
- if ( this._Range )
- {
- this._Range.deleteContents() ;
- this._UpdateElementInfo() ;
- }
- },
- ExtractContents : function()
- {
- if ( this._Range )
- {
- var docFrag = this._Range.extractContents() ;
- this._UpdateElementInfo() ;
- return docFrag ;
- }
- return null ;
- },
- CheckIsCollapsed : function()
- {
- if ( this._Range )
- return this._Range.collapsed ;
- return false ;
- },
- Collapse : function( toStart )
- {
- if ( this._Range )
- this._Range.collapse( toStart ) ;
- this._UpdateElementInfo() ;
- },
- Clone : function()
- {
- var oClone = FCKTools.CloneObject( this ) ;
- if ( this._Range )
- oClone._Range = this._Range.cloneRange() ;
- return oClone ;
- },
- MoveToNodeContents : function( targetNode )
- {
- if ( !this._Range )
- this._Range = this.CreateRange() ;
- this._Range.selectNodeContents( targetNode ) ;
- this._UpdateElementInfo() ;
- },
- MoveToElementStart : function( targetElement )
- {
- this.SetStart(targetElement,1) ;
- this.SetEnd(targetElement,1) ;
- },
- // Moves to the first editing point inside a element. For example, in a
- // element tree like "<p><b><i></i></b> Text</p>", the start editing point
- // is "<p><b><i>^</i></b> Text</p>" (inside <i>).
- MoveToElementEditStart : function( targetElement )
- {
- var editableElement ;
- while ( targetElement && targetElement.nodeType == 1 )
- {
- if ( FCKDomTools.CheckIsEditable( targetElement ) )
- editableElement = targetElement ;
- else if ( editableElement )
- break ; // If we already found an editable element, stop the loop.
- targetElement = targetElement.firstChild ;
- }
- if ( editableElement )
- this.MoveToElementStart( editableElement ) ;
- },
- InsertNode : function( node )
- {
- if ( this._Range )
- this._Range.insertNode( node ) ;
- },
- CheckIsEmpty : function()
- {
- if ( this.CheckIsCollapsed() )
- return true ;
- // Inserts the contents of the range in a div tag.
- var eToolDiv = this.Window.document.createElement( 'div' ) ;
- this._Range.cloneContents().AppendTo( eToolDiv ) ;
- FCKDomTools.TrimNode( eToolDiv ) ;
- return ( eToolDiv.innerHTML.length == 0 ) ;
- },
- /**
- * Checks if the start boundary of the current range is "visually" (like a
- * selection caret) at the beginning of the block. It means that some
- * things could be brefore the range, like spaces or empty inline elements,
- * but it would still be considered at the beginning of the block.
- */
- CheckStartOfBlock : function()
- {
- var cache = this._Cache ;
- var bIsStartOfBlock = cache.IsStartOfBlock ;
- if ( bIsStartOfBlock != undefined )
- return bIsStartOfBlock ;
- // Take the block reference.
- var block = this.StartBlock || this.StartBlockLimit ;
- var container = this._Range.startContainer ;
- var offset = this._Range.startOffset ;
- var currentNode ;
- if ( offset > 0 )
- {
- // First, check the start container. If it is a text node, get the
- // substring of the node value before the range offset.
- if ( container.nodeType == 3 )
- {
- var textValue = container.nodeValue.substr( 0, offset ).Trim() ;
- // If we have some text left in the container, we are not at
- // the end for the block.
- if ( textValue.length != 0 )
- return cache.IsStartOfBlock = false ;
- }
- else
- currentNode = container.childNodes[ offset - 1 ] ;
- }
- // We'll not have a currentNode if the container was a text node, or
- // the offset is zero.
- if ( !currentNode )
- currentNode = FCKDomTools.GetPreviousSourceNode( container, true, null, block ) ;
- while ( currentNode )
- {
- switch ( currentNode.nodeType )
- {
- case 1 :
- // It's not an inline element.
- if ( !FCKListsLib.InlineChildReqElements[ currentNode.nodeName.toLowerCase() ] )
- return cache.IsStartOfBlock = false ;
- break ;
- case 3 :
- // It's a text node with real text.
- if ( currentNode.nodeValue.Trim().length > 0 )
- return cache.IsStartOfBlock = false ;
- }
- currentNode = FCKDomTools.GetPreviousSourceNode( currentNode, false, null, block ) ;
- }
- return cache.IsStartOfBlock = true ;
- },
- /**
- * Checks if the end boundary of the current range is "visually" (like a
- * selection caret) at the end of the block. It means that some things
- * could be after the range, like spaces, empty inline elements, or a
- * single <br>, but it would still be considered at the end of the block.
- */
- CheckEndOfBlock : function( refreshSelection )
- {
- var isEndOfBlock = this._Cache.IsEndOfBlock ;
- if ( isEndOfBlock != undefined )
- return isEndOfBlock ;
- // Take the block reference.
- var block = this.EndBlock || this.EndBlockLimit ;
- var container = this._Range.endContainer ;
- var offset = this._Range.endOffset ;
- var currentNode ;
- // First, check the end container. If it is a text node, get the
- // substring of the node value after the range offset.
- if ( container.nodeType == 3 )
- {
- var textValue = container.nodeValue ;
- if ( offset < textValue.length )
- {
- textValue = textValue.substr( offset ) ;
- // If we have some text left in the container, we are not at
- // the end for the block.
- if ( textValue.Trim().length != 0 )
- return this._Cache.IsEndOfBlock = false ;
- }
- }
- else
- currentNode = container.childNodes[ offset ] ;
- // We'll not have a currentNode if the container was a text node, of
- // the offset is out the container children limits (after it probably).
- if ( !currentNode )
- currentNode = FCKDomTools.GetNextSourceNode( container, true, null, block ) ;
- var hadBr = false ;
- while ( currentNode )
- {
- switch ( currentNode.nodeType )
- {
- case 1 :
- var nodeName = currentNode.nodeName.toLowerCase() ;
- // It's an inline element.
- if ( FCKListsLib.InlineChildReqElements[ nodeName ] )
- break ;
- // It is the first <br> found.
- if ( nodeName == 'br' && !hadBr )
- {
- hadBr = true ;
- break ;
- }
- return this._Cache.IsEndOfBlock = false ;
- case 3 :
- // It's a text node with real text.
- if ( currentNode.nodeValue.Trim().length > 0 )
- return this._Cache.IsEndOfBlock = false ;
- }
- currentNode = FCKDomTools.GetNextSourceNode( currentNode, false, null, block ) ;
- }
- if ( refreshSelection )
- this.Select() ;
- return this._Cache.IsEndOfBlock = true ;
- },
- // This is an "intrusive" way to create a bookmark. It includes <span> tags
- // in the range boundaries. The advantage of it is that it is possible to
- // handle DOM mutations when moving back to the bookmark.
- // Attention: the inclusion of nodes in the DOM is a design choice and
- // should not be changed as there are other points in the code that may be
- // using those nodes to perform operations. See GetBookmarkNode.
- // For performance, includeNodes=true if intended to SelectBookmark.
- CreateBookmark : function( includeNodes )
- {
- // Create the bookmark info (random IDs).
- var oBookmark =
- {
- StartId : (new Date()).valueOf() + Math.floor(Math.random()*1000) + 'S',
- EndId : (new Date()).valueOf() + Math.floor(Math.random()*1000) + 'E'
- } ;
- var oDoc = this.Window.document ;
- var eStartSpan ;
- var eEndSpan ;
- var oClone ;
- // For collapsed ranges, add just the start marker.
- if ( !this.CheckIsCollapsed() )
- {
- eEndSpan = oDoc.createElement( 'span' ) ;
- eEndSpan.style.display = 'none' ;
- eEndSpan.id = oBookmark.EndId ;
- eEndSpan.setAttribute( '_fck_bookmark', true ) ;
- // For IE, it must have something inside, otherwise it may be
- // removed during DOM operations.
- // if ( FCKBrowserInfo.IsIE )
- eEndSpan.innerHTML = ' ' ;
- oClone = this.Clone() ;
- oClone.Collapse( false ) ;
- oClone.InsertNode( eEndSpan ) ;
- }
- eStartSpan = oDoc.createElement( 'span' ) ;
- eStartSpan.style.display = 'none' ;
- eStartSpan.id = oBookmark.StartId ;
- eStartSpan.setAttribute( '_fck_bookmark', true ) ;
- // For IE, it must have something inside, otherwise it may be removed
- // during DOM operations.
- // if ( FCKBrowserInfo.IsIE )
- eStartSpan.innerHTML = ' ' ;
- oClone = this.Clone() ;
- oClone.Collapse( true ) ;
- oClone.InsertNode( eStartSpan ) ;
- if ( includeNodes )
- {
- oBookmark.StartNode = eStartSpan ;
- oBookmark.EndNode = eEndSpan ;
- }
- // Update the range position.
- if ( eEndSpan )
- {
- this.SetStart( eStartSpan, 4 ) ;
- this.SetEnd( eEndSpan, 3 ) ;
- }
- else
- this.MoveToPosition( eStartSpan, 4 ) ;
- return oBookmark ;
- },
- // This one should be a part of a hypothetic "bookmark" object.
- GetBookmarkNode : function( bookmark, start )
- {
- var doc = this.Window.document ;
- if ( start )
- return bookmark.StartNode || doc.getElementById( bookmark.StartId ) ;
- else
- return bookmark.EndNode || doc.getElementById( bookmark.EndId ) ;
- },
- MoveToBookmark : function( bookmark, preserveBookmark )
- {
- var eStartSpan = this.GetBookmarkNode( bookmark, true ) ;
- var eEndSpan = this.GetBookmarkNode( bookmark, false ) ;
- this.SetStart( eStartSpan, 3 ) ;
- if ( !preserveBookmark )
- FCKDomTools.RemoveNode( eStartSpan ) ;
- // If collapsed, the end span will not be available.
- if ( eEndSpan )
- {
- this.SetEnd( eEndSpan, 3 ) ;
- if ( !preserveBookmark )
- FCKDomTools.RemoveNode( eEndSpan ) ;
- }
- else
- this.Collapse( true ) ;
- this._UpdateElementInfo() ;
- },
- // Non-intrusive bookmark algorithm
- CreateBookmark2 : function()
- {
- // If there is no range then get out of here.
- // It happens on initial load in Safari #962 and if the editor it's hidden also in Firefox
- if ( ! this._Range )
- return { "Start" : 0, "End" : 0 } ;
- // First, we record down the offset values
- var bookmark =
- {
- "Start" : [ this._Range.startOffset ],
- "End" : [ this._Range.endOffset ]
- } ;
- // Since we're treating the document tree as normalized, we need to backtrack the text lengths
- // of previous text nodes into the offset value.
- var curStart = this._Range.startContainer.previousSibling ;
- var curEnd = this._Range.endContainer.previousSibling ;
- // Also note that the node that we use for "address base" would change during backtracking.
- var addrStart = this._Range.startContainer ;
- var addrEnd = this._Range.endContainer ;
- while ( curStart && curStart.nodeType == 3 && addrStart.nodeType == 3 )
- {
- bookmark.Start[0] += curStart.length ;
- addrStart = curStart ;
- curStart = curStart.previousSibling ;
- }
- while ( curEnd && curEnd.nodeType == 3 && addrEnd.nodeType == 3 )
- {
- bookmark.End[0] += curEnd.length ;
- addrEnd = curEnd ;
- curEnd = curEnd.previousSibling ;
- }
- // If the object pointed to by the startOffset and endOffset are text nodes, we need
- // to backtrack and add in the text offset to the bookmark addresses.
- if ( addrStart.nodeType == 1 && addrStart.childNodes[bookmark.Start[0]] && addrStart.childNodes[bookmark.Start[0]].nodeType == 3 )
- {
- var curNode = addrStart.childNodes[bookmark.Start[0]] ;
- var offset = 0 ;
- while ( curNode.previousSibling && curNode.previousSibling.nodeType == 3 )
- {
- curNode = curNode.previousSibling ;
- offset += curNode.length ;
- }
- addrStart = curNode ;
- bookmark.Start[0] = offset ;
- }
- if ( addrEnd.nodeType == 1 && addrEnd.childNodes[bookmark.End[0]] && addrEnd.childNodes[bookmark.End[0]].nodeType == 3 )
- {
- var curNode = addrEnd.childNodes[bookmark.End[0]] ;
- var offset = 0 ;
- while ( curNode.previousSibling && curNode.previousSibling.nodeType == 3 )
- {
- curNode = curNode.previousSibling ;
- offset += curNode.length ;
- }
- addrEnd = curNode ;
- bookmark.End[0] = offset ;
- }
- // Then, we record down the precise position of the container nodes
- // by walking up the DOM tree and counting their childNode index
- bookmark.Start = FCKDomTools.GetNodeAddress( addrStart, true ).concat( bookmark.Start ) ;
- bookmark.End = FCKDomTools.GetNodeAddress( addrEnd, true ).concat( bookmark.End ) ;
- return bookmark;
- },
- MoveToBookmark2 : function( bookmark )
- {
- // Reverse the childNode counting algorithm in CreateBookmark2()
- var curStart = FCKDomTools.GetNodeFromAddress( this.Window.document, bookmark.Start.slice( 0, -1 ), true ) ;
- var curEnd = FCKDomTools.GetNodeFromAddress( this.Window.document, bookmark.End.slice( 0, -1 ), true ) ;
- // Generate the W3C Range object and update relevant data
- this.Release( true ) ;
- this._Range = new FCKW3CRange( this.Window.document ) ;
- var startOffset = bookmark.Start[ bookmark.Start.length - 1 ] ;
- var endOffset = bookmark.End[ bookmark.End.length - 1 ] ;
- while ( curStart.nodeType == 3 && startOffset > curStart.length )
- {
- if ( ! curStart.nextSibling || curStart.nextSibling.nodeType != 3 )
- break ;
- startOffset -= curStart.length ;
- curStart = curStart.nextSibling ;
- }
- while ( curEnd.nodeType == 3 && endOffset > curEnd.length )
- {
- if ( ! curEnd.nextSibling || curEnd.nextSibling.nodeType != 3 )
- break ;
- endOffset -= curEnd.length ;
- curEnd = curEnd.nextSibling ;
- }
- this._Range.setStart( curStart, startOffset ) ;
- this._Range.setEnd( curEnd, endOffset ) ;
- this._UpdateElementInfo() ;
- },
- MoveToPosition : function( targetElement, position )
- {
- this.SetStart( targetElement, position ) ;
- this.Collapse( true ) ;
- },
- /*
- * Moves the position of the start boundary of the range to a specific position
- * relatively to a element.
- * @position:
- * 1 = After Start <target>^contents</target>
- * 2 = Before End <target>contents^</target>
- * 3 = Before Start ^<target>contents</target>
- * 4 = After End <target>contents</target>^
- */
- SetStart : function( targetElement, position, noInfoUpdate )
- {
- var oRange = this._Range ;
- if ( !oRange )
- oRange = this._Range = this.CreateRange() ;
- switch( position )
- {
- case 1 : // After Start <target>^contents</target>
- oRange.setStart( targetElement, 0 ) ;
- break ;
- case 2 : // Before End <target>contents^</target>
- oRange.setStart( targetElement, targetElement.childNodes.length ) ;
- break ;
- case 3 : // Before Start ^<target>contents</target>
- oRange.setStartBefore( targetElement ) ;
- break ;
- case 4 : // After End <target>contents</target>^
- oRange.setStartAfter( targetElement ) ;
- }
- if ( !noInfoUpdate )
- this._UpdateElementInfo() ;
- },
- /*
- * Moves the position of the start boundary of the range to a specific position
- * relatively to a element.
- * @position:
- * 1 = After Start <target>^contents</target>
- * 2 = Before End <target>contents^</target>
- * 3 = Before Start ^<target>contents</target>
- * 4 = After End <target>contents</target>^
- */
- SetEnd : function( targetElement, position, noInfoUpdate )
- {
- var oRange = this._Range ;
- if ( !oRange )
- oRange = this._Range = this.CreateRange() ;
- switch( position )
- {
- case 1 : // After Start <target>^contents</target>
- oRange.setEnd( targetElement, 0 ) ;
- break ;
- case 2 : // Before End <target>contents^</target>
- oRange.setEnd( targetElement, targetElement.childNodes.length ) ;
- break ;
- case 3 : // Before Start ^<target>contents</target>
- oRange.setEndBefore( targetElement ) ;
- break ;
- case 4 : // After End <target>contents</target>^
- oRange.setEndAfter( targetElement ) ;
- }
- if ( !noInfoUpdate )
- this._UpdateElementInfo() ;
- },
- Expand : function( unit )
- {
- var oNode, oSibling ;
- switch ( unit )
- {
- // Expand the range to include all inline parent elements if we are
- // are in their boundary limits.
- // For example (where [ ] are the range limits):
- // Before => Some <b>[<i>Some sample text]</i></b>.
- // After => Some [<b><i>Some sample text</i></b>].
- case 'inline_elements' :
- // Expand the start boundary.
- if ( this._Range.startOffset == 0 )
- {
- oNode = this._Range.startContainer ;
- if ( oNode.nodeType != 1 )
- oNode = oNode.previousSibling ? null : oNode.parentNode ;
- if ( oNode )
- {
- while ( FCKListsLib.InlineNonEmptyElements[ oNode.nodeName.toLowerCase() ] )
- {
- this._Range.setStartBefore( oNode ) ;
- if ( oNode != oNode.parentNode.firstChild )
- break ;
- oNode = oNode.parentNode ;
- }
- }
- }
- // Expand the end boundary.
- oNode = this._Range.endContainer ;
- var offset = this._Range.endOffset ;
- if ( ( oNode.nodeType == 3 && offset >= oNode.nodeValue.length ) || ( oNode.nodeType == 1 && offset >= oNode.childNodes.length ) || ( oNode.nodeType != 1 && oNode.nodeType != 3 ) )
- {
- if ( oNode.nodeType != 1 )
- oNode = oNode.nextSibling ? null : oNode.parentNode ;
- if ( oNode )
- {
- while ( FCKListsLib.InlineNonEmptyElements[ oNode.nodeName.toLowerCase() ] )
- {
- this._Range.setEndAfter( oNode ) ;
- if ( oNode != oNode.parentNode.lastChild )
- break ;
- oNode = oNode.parentNode ;
- }
- }
- }
- break ;
- case 'block_contents' :
- case 'list_contents' :
- var boundarySet = FCKListsLib.BlockBoundaries ;
- if ( unit == 'list_contents' || FCKConfig.EnterMode == 'br' )
- boundarySet = FCKListsLib.ListBoundaries ;
- if ( this.StartBlock && FCKConfig.EnterMode != 'br' && unit == 'block_contents' )
- this.SetStart( this.StartBlock, 1 ) ;
- else
- {
- // Get the start node for the current range.
- oNode = this._Range.startContainer ;
- // If it is an element, get the node right before of it (in source order).
- if ( oNode.nodeType == 1 )
- {
- var lastNode = oNode.childNodes[ this._Range.startOffset ] ;
- if ( lastNode )
- oNode = FCKDomTools.GetPreviousSourceNode( lastNode, true ) ;
- else
- oNode = oNode.lastChild || oNode ;
- }
- // We must look for the left boundary, relative to the range
- // start, which is limited by a block element.
- while ( oNode
- && ( oNode.nodeType != 1
- || ( oNode != this.StartBlockLimit
- && !boundarySet[ oNode.nodeName.toLowerCase() ] ) ) )
- {
- this._Range.setStartBefore( oNode ) ;
- oNode = oNode.previousSibling || oNode.parentNode ;
- }
- }
- if ( this.EndBlock && FCKConfig.EnterMode != 'br' && unit == 'block_contents' && this.EndBlock.nodeName.toLowerCase() != 'li' )
- this.SetEnd( this.EndBlock, 2 ) ;
- else
- {
- oNode = this._Range.endContainer ;
- if ( oNode.nodeType == 1 )
- oNode = oNode.childNodes[ this._Range.endOffset ] || oNode.lastChild ;
- // We must look for the right boundary, relative to the range
- // end, which is limited by a block element.
- while ( oNode
- && ( oNode.nodeType != 1
- || ( oNode != this.StartBlockLimit
- && !boundarySet[ oNode.nodeName.toLowerCase() ] ) ) )
- {
- this._Range.setEndAfter( oNode ) ;
- oNode = oNode.nextSibling || oNode.parentNode ;
- }
- // In EnterMode='br', the end <br> boundary element must
- // be included in the expanded range.
- if ( oNode && oNode.nodeName.toLowerCase() == 'br' )
- this._Range.setEndAfter( oNode ) ;
- }
- this._UpdateElementInfo() ;
- }
- },
- /**
- * Split the block element for the current range. It deletes the contents
- * of the range and splits the block in the collapsed position, resulting
- * in two sucessive blocks. The range is then positioned in the middle of
- * them.
- *
- * It returns and object with the following properties:
- * - PreviousBlock : a reference to the block element that preceeds
- * the range after the split.
- * - NextBlock : a reference to the block element that follows the
- * range after the split.
- * - WasStartOfBlock : a boolean indicating that the range was
- * originaly at the start of the block.
- * - WasEndOfBlock : a boolean indicating that the range was originaly
- * at the end of the block.
- *
- * If the range was originaly at the start of the block, no split will happen
- * and the PreviousBlock value will be null. The same is valid for the
- * NextBlock value if the range was at the end of the block.
- */
- SplitBlock : function( forceBlockTag )
- {
- var blockTag = forceBlockTag || FCKConfig.EnterMode ;
- if ( !this._Range )
- this.MoveToSelection() ;
- // The range boundaries must be in the same "block limit" element.
- if ( this.StartBlockLimit == this.EndBlockLimit )
- {
- // Get the current blocks.
- var eStartBlock = this.StartBlock ;
- var eEndBlock = this.EndBlock ;
- var oElementPath = null ;
- if ( blockTag != 'br' )
- {
- if ( !eStartBlock )
- {
- eStartBlock = this.FixBlock( true, blockTag ) ;
- eEndBlock = this.EndBlock ; // FixBlock may have fixed the EndBlock too.
- }
- if ( !eEndBlock )
- eEndBlock = this.FixBlock( false, blockTag ) ;
- }
- // Get the range position.
- var bIsStartOfBlock = ( eStartBlock != null && this.CheckStartOfBlock() ) ;
- var bIsEndOfBlock = ( eEndBlock != null && this.CheckEndOfBlock() ) ;
- // Delete the current contents.
- if ( !this.CheckIsEmpty() )
- this.DeleteContents() ;
- if ( eStartBlock && eEndBlock && eStartBlock == eEndBlock )
- {
- if ( bIsEndOfBlock )
- {
- oElementPath = new FCKElementPath( this.StartContainer ) ;
- this.MoveToPosition( eEndBlock, 4 ) ;
- eEndBlock = null ;
- }
- else if ( bIsStartOfBlock )
- {
- oElementPath = new FCKElementPath( this.StartContainer ) ;
- this.MoveToPosition( eStartBlock, 3 ) ;
- eStartBlock = null ;
- }
- else
- {
- // Extract the contents of the block from the selection point to the end of its contents.
- this.SetEnd( eStartBlock, 2 ) ;
- var eDocFrag = this.ExtractContents() ;
- // Duplicate the block element after it.
- eEndBlock = eStartBlock.cloneNode( false ) ;
- eEndBlock.removeAttribute( 'id', false ) ;
- // Place the extracted contents in the duplicated block.
- eDocFrag.AppendTo( eEndBlock ) ;
- FCKDomTools.InsertAfterNode( eStartBlock, eEndBlock ) ;
- this.MoveToPosition( eStartBlock, 4 ) ;
- // In Gecko, the last child node must be a bogus <br>.
- // Note: bogus <br> added under <ul> or <ol> would cause lists to be incorrectly rendered.
- if ( FCKBrowserInfo.IsGecko &&
- ! eStartBlock.nodeName.IEquals( ['ul', 'ol'] ) )
- FCKTools.AppendBogusBr( eStartBlock ) ;
- }
- }
- return {
- PreviousBlock : eStartBlock,
- NextBlock : eEndBlock,
- WasStartOfBlock : bIsStartOfBlock,
- WasEndOfBlock : bIsEndOfBlock,
- ElementPath : oElementPath
- } ;
- }
- return null ;
- },
- // Transform a block without a block tag in a valid block (orphan text in the body or td, usually).
- FixBlock : function( isStart, blockTag )
- {
- // Bookmark the range so we can restore it later.
- var oBookmark = this.CreateBookmark() ;
- // Collapse the range to the requested ending boundary.
- this.Collapse( isStart ) ;
- // Expands it to the block contents.
- this.Expand( 'block_contents' ) ;
- // Create the fixed block.
- var oFixedBlock = this.Window.document.createElement( blockTag ) ;
- // Move the contents of the temporary range to the fixed block.
- this.ExtractContents().AppendTo( oFixedBlock ) ;
- FCKDomTools.TrimNode( oFixedBlock ) ;
- // If the fixed block is empty (not counting bookmark nodes)
- // Add a <br /> inside to expand it.
- if ( FCKDomTools.CheckIsEmptyElement(oFixedBlock, function( element ) { return element.getAttribute('_fck_bookmark') != 'true' ; } )
- && FCKBrowserInfo.IsGeckoLike )
- FCKTools.AppendBogusBr( oFixedBlock ) ;
- // Insert the fixed block into the DOM.
- this.InsertNode( oFixedBlock ) ;
- // Move the range back to the bookmarked place.
- this.MoveToBookmark( oBookmark ) ;
- return oFixedBlock ;
- },
- Release : function( preserveWindow )
- {
- if ( !preserveWindow )
- this.Window = null ;
- this.StartNode = null ;
- this.StartContainer = null ;
- this.StartBlock = null ;
- this.StartBlockLimit = null ;
- this.EndNode = null ;
- this.EndContainer = null ;
- this.EndBlock = null ;
- this.EndBlockLimit = null ;
- this._Range = null ;
- this._Cache = null ;
- },
- CheckHasRange : function()
- {
- return !!this._Range ;
- },
- GetTouchedStartNode : function()
- {
- var range = this._Range ;
- var container = range.startContainer ;
- if ( range.collapsed || container.nodeType != 1 )
- return container ;
- return container.childNodes[ range.startOffset ] || container ;
- },
- GetTouchedEndNode : function()
- {
- var range = this._Range ;
- var container = range.endContainer ;
- if ( range.collapsed || container.nodeType != 1 )
- return container ;
- return container.childNodes[ range.endOffset - 1 ] || container ;
- }
- } ;