ckeditor/editor/_source/internals/fckundo.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 ==
 */

var FCKUndo = new Object() ;

FCKUndo.SavedData = new Array() ;
FCKUndo.CurrentIndex = -1 ;
FCKUndo.TypesCount = 0 ;
FCKUndo.Changed = false ;	// Is the document changed in respect to its initial image?
FCKUndo.MaxTypes = 25 ;
FCKUndo.Typing = false ;
FCKUndo.SaveLocked = false ;

FCKUndo._GetBookmark = function()
{
	FCKSelection.Restore() ;

	var range = new FCKDomRange( FCK.EditorWindow ) ;
	try
	{
		// There are some tricky cases where this might fail (e.g. having a lone empty table in IE)
		range.MoveToSelection() ;
	}
	catch ( e )
	{
		return null ;
	}
	if ( FCKBrowserInfo.IsIE )
	{
		var bookmark = range.CreateBookmark() ;
		var dirtyHtml = FCK.EditorDocument.body.innerHTML ;
		range.MoveToBookmark( bookmark ) ;
		return [ bookmark, dirtyHtml ] ;
	}
	return range.CreateBookmark2() ;
}

FCKUndo._SelectBookmark = function( bookmark )
{
	if ( ! bookmark )
		return ;