Web/fckeditor/editor/_source/classes/fckw3crange.js

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/*
 * FCKeditor - The text editor for Internet - http://www.fckeditor.net
 * Copyright (C) 2003-2008 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 ==
 *
 * This class partially implements the W3C DOM Range for browser that don't
 * support the standards (like IE):
 * http://www.w3.org/TR/DOM-Level-2-Traversal-Range/ranges.html
 */

var FCKW3CRange = function( parentDocument )
{
	this._Document = parentDocument ;

	this.startContainer	= null ;
	this.startOffset	= null ;
	this.endContainer	= null ;
	this.endOffset		= null ;
	this.collapsed		= true ;
}

FCKW3CRange.CreateRange = function( parentDocument )
{
	// We could opt to use the Range implementation of the browsers. The problem
	// is that every browser have different bugs on their implementations,
	// mostly related to different interpretations of the W3C specifications.
	// So, for now, let's use our implementation and pray for browsers fixings
	// soon. Otherwise will go crazy on trying to find out workarounds.
	/*
	// Get the browser implementation of the range, if available.
	if ( parentDocument.createRange )
	{
		var range = parentDocument.createRange() ;
		if ( typeof( range.startContainer ) != 'undefined' )
			return range ;
	}
	*/
	return new FCKW3CRange( parentDocument ) ;
}

FCKW3CRange.CreateFromRange = function( parentDocument, sourceRange )
{
	var range = FCKW3CRange.CreateRange( parentDocument ) ;
	range.setStart( sourceRange.startContainer, sourceRange.startOffset ) ;
	range.setEnd( sourceRange.endContainer, sourceRange.endOffset ) ;