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/* |
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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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* |
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* == BEGIN LICENSE == |
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* |
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* Licensed under the terms of any of the following licenses at your |
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* choice: |
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* |
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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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* |
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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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* |
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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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* |
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* == END LICENSE == |
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* |
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* This class can be used to interate through nodes inside a range. |
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* |
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* During interation, the provided range can become invalid, due to document |
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* mutations, so CreateBookmark() used to restore it after processing, if |
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* needed. |
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*/ |
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|
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var FCKDomRangeIterator = function( range ) |
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{ |
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/** |
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* The FCKDomRange object that marks the interation boundaries. |
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*/ |
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this.Range = range ; |
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|
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/** |
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* Indicates that <br> elements must be used as paragraph boundaries. |
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*/ |
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this.ForceBrBreak = false ; |
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|
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/** |
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* Guarantees that the iterator will always return "real" block elements. |
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* If "false", elements like <li>, <th> and <td> are returned. If "true", a |
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* dedicated block element block element will be created inside those |
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* elements to hold the selected content. |
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*/ |
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this.EnforceRealBlocks = false ; |
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} |
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|
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FCKDomRangeIterator.CreateFromSelection = function( targetWindow ) |
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{ |
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var range = new FCKDomRange( targetWindow ) ; |
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range.MoveToSelection() ; |
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return new FCKDomRangeIterator( range ) ; |
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} |
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|
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FCKDomRangeIterator.prototype = |
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{ |
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/** |
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* Get the next paragraph element. It automatically breaks the document |
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* when necessary to generate block elements for the paragraphs. |
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*/ |
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GetNextParagraph : function() |
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{ |
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// The block element to be returned. |
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var block ; |
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|
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// The range object used to identify the paragraph contents. |
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var range ; |
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|
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// Indicated that the current element in the loop is the last one. |
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var isLast ; |
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|
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// Instructs to cleanup remaining BRs. |
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var removePreviousBr ; |
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var removeLastBr ; |
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|
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var boundarySet = this.ForceBrBreak ? FCKListsLib.ListBoundaries : FCKListsLib.BlockBoundaries ; |
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|
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// This is the first iteration. Let's initialize it. |
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if ( !this._LastNode ) |
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{ |
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var range = this.Range.Clone() ; |
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range.Expand( this.ForceBrBreak ? 'list_contents' : 'block_contents' ) ; |
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|
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this._NextNode = range.GetTouchedStartNode() ; |
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this._LastNode = range.GetTouchedEndNode() ; |
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|
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// Let's reuse this variable. |
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range = null ; |
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} |
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|
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var currentNode = this._NextNode ; |
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var lastNode = this._LastNode ; |
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|
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this._NextNode = null ; |
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|
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while ( currentNode ) |
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{ |
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// closeRange indicates that a paragraph boundary has been found, |
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// so the range can be closed. |
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var closeRange = false ; |
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|
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// includeNode indicates that the current node is good to be part |
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// of the range. By default, any non-element node is ok for it. |
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var includeNode = ( currentNode.nodeType != 1 ) ; |
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|
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var continueFromSibling = false ; |
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|
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// If it is an element node, let's check if it can be part of the |
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// range. |
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if ( !includeNode ) |
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{ |
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var nodeName = currentNode.nodeName.toLowerCase() ; |
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|
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if ( boundarySet[ nodeName ] && ( !FCKBrowserInfo.IsIE || currentNode.scopeName == 'HTML' ) ) |
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{ |
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// <br> boundaries must be part of the range. It will |
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// happen only if ForceBrBreak. |
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if ( nodeName == 'br' ) |
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includeNode = true ; |
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else if ( !range && currentNode.childNodes.length == 0 && nodeName != 'hr' ) |
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{ |
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// If we have found an empty block, and haven't started |
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// the range yet, it means we must return this block. |
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block = currentNode ; |
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isLast = currentNode == lastNode ; |
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break ; |
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} |
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|
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// The range must finish right before the boundary, |
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// including possibly skipped empty spaces. (#1603) |
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if ( range ) |
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{ |
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range.SetEnd( currentNode, 3, true ) ; |
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|
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// The found boundary must be set as the next one at this |
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// point. (#1717) |
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if ( nodeName != 'br' ) |
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this._NextNode = FCKDomTools.GetNextSourceNode( currentNode, true, null, lastNode ) || currentNode ; |
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} |
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|
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closeRange = true ; |
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} |
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else |
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{ |
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// If we have child nodes, let's check them. |
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if ( currentNode.firstChild ) |
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{ |
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// If we don't have a range yet, let's start it. |
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if ( !range ) |
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{ |
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range = new FCKDomRange( this.Range.Window ) ; |
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range.SetStart( currentNode, 3, true ) ; |
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} |
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|
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currentNode = currentNode.firstChild ; |
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continue ; |
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} |
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includeNode = true ; |
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} |
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} |
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else if ( currentNode.nodeType == 3 ) |
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{ |
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// Ignore normal whitespaces (i.e. not including or |
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// other unicode whitespaces) before/after a block node. |
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if ( /^[\r\n\t ]+$/.test( currentNode.nodeValue ) ) |
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includeNode = false ; |
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} |
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|
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// The current node is good to be part of the range and we are |
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// starting a new range, initialize it first. |
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if ( includeNode && !range ) |
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{ |
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range = new FCKDomRange( this.Range.Window ) ; |
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range.SetStart( currentNode, 3, true ) ; |
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} |
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|
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// The last node has been found. |
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isLast = ( ( !closeRange || includeNode ) && currentNode == lastNode ) ; |
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// isLast = ( currentNode == lastNode && ( currentNode.nodeType != 1 || currentNode.childNodes.length == 0 ) ) ; |
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|
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// If we are in an element boundary, let's check if it is time |
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// to close the range, otherwise we include the parent within it. |
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if ( range && !closeRange ) |
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{ |
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while ( !currentNode.nextSibling && !isLast ) |
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{ |
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var parentNode = currentNode.parentNode ; |
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|
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if ( boundarySet[ parentNode.nodeName.toLowerCase() ] ) |
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{ |
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closeRange = true ; |
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isLast = isLast || ( parentNode == lastNode ) ; |
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break ; |
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} |
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|
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currentNode = parentNode ; |
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includeNode = true ; |
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isLast = ( currentNode == lastNode ) ; |
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continueFromSibling = true ; |
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} |
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} |
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|
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// Now finally include the node. |
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if ( includeNode ) |
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range.SetEnd( currentNode, 4, true ) ; |
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|
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// We have found a block boundary. Let's close the range and move out of the |
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// loop. |
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if ( ( closeRange || isLast ) && range ) |
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{ |
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range._UpdateElementInfo() ; |
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|
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if ( range.StartNode == range.EndNode |
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&& range.StartNode.parentNode == range.StartBlockLimit |
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&& range.StartNode.getAttribute && range.StartNode.getAttribute( '_fck_bookmark' ) ) |
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range = null ; |
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else |
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break ; |
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} |
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|
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if ( isLast ) |
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break ; |
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|
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currentNode = FCKDomTools.GetNextSourceNode( currentNode, continueFromSibling, null, lastNode ) ; |
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} |
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|
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// Now, based on the processed range, look for (or create) the block to be returned. |
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if ( !block ) |
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{ |
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// If no range has been found, this is the end. |
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if ( !range ) |
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{ |
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this._NextNode = null ; |
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return null ; |
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} |
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|
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block = range.StartBlock ; |
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|
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if ( !block |
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&& !this.EnforceRealBlocks |
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&& range.StartBlockLimit.nodeName.IEquals( 'DIV', 'TH', 'TD' ) |
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&& range.CheckStartOfBlock() |
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&& range.CheckEndOfBlock() ) |
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{ |
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block = range.StartBlockLimit ; |
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} |
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else if ( !block || ( this.EnforceRealBlocks && block.nodeName.toLowerCase() == 'li' ) ) |
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{ |
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// Create the fixed block. |
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block = this.Range.Window.document.createElement( FCKConfig.EnterMode == 'p' ? 'p' : 'div' ) ; |
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|
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// Move the contents of the temporary range to the fixed block. |
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range.ExtractContents().AppendTo( block ) ; |
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FCKDomTools.TrimNode( block ) ; |
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|
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// Insert the fixed block into the DOM. |
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range.InsertNode( block ) ; |
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|
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removePreviousBr = true ; |
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removeLastBr = true ; |
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} |
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else if ( block.nodeName.toLowerCase() != 'li' ) |
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{ |
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// If the range doesn't includes the entire contents of the |
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// block, we must split it, isolating the range in a dedicated |
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// block. |
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if ( !range.CheckStartOfBlock() || !range.CheckEndOfBlock() ) |
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{ |
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// The resulting block will be a clone of the current one. |
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block = block.cloneNode( false ) ; |
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|
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// Extract the range contents, moving it to the new block. |
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range.ExtractContents().AppendTo( block ) ; |
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FCKDomTools.TrimNode( block ) ; |
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|
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// Split the block. At this point, the range will be in the |
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// right position for our intents. |
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var splitInfo = range.SplitBlock() ; |
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|
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removePreviousBr = !splitInfo.WasStartOfBlock ; |
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removeLastBr = !splitInfo.WasEndOfBlock ; |
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|
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// Insert the new block into the DOM. |
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range.InsertNode( block ) ; |
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} |
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} |
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else if ( !isLast ) |
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{ |
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// LIs are returned as is, with all their children (due to the |
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// nested lists). But, the next node is the node right after |
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// the current range, which could be an <li> child (nested |
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// lists) or the next sibling <li>. |
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|
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this._NextNode = block == lastNode ? null : FCKDomTools.GetNextSourceNode( range.EndNode, true, null, lastNode ) ; |
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return block ; |
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} |
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} |
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|
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if ( removePreviousBr ) |
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{ |
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var previousSibling = block.previousSibling ; |
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if ( previousSibling && previousSibling.nodeType == 1 ) |
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{ |
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if ( previousSibling.nodeName.toLowerCase() == 'br' ) |
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previousSibling.parentNode.removeChild( previousSibling ) ; |
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else if ( previousSibling.lastChild && previousSibling.lastChild.nodeName.IEquals( 'br' ) ) |
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previousSibling.removeChild( previousSibling.lastChild ) ; |
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} |
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} |
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|
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if ( removeLastBr ) |
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{ |
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var lastChild = block.lastChild ; |
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if ( lastChild && lastChild.nodeType == 1 && lastChild.nodeName.toLowerCase() == 'br' ) |
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block.removeChild( lastChild ) ; |
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} |
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|
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// Get a reference for the next element. This is important because the |
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// above block can be removed or changed, so we can rely on it for the |
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// next interation. |
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if ( !this._NextNode ) |
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this._NextNode = ( isLast || block == lastNode ) ? null : FCKDomTools.GetNextSourceNode( block, true, null, lastNode ) ; |
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|
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return block ; |
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} |
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} ; |
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|
