Hacked By AnonymousFox

/*

 * FCKeditor - The text editor for internet

 * Copyright (C) 2003-2006 Frederico Caldeira Knabben

 * 

 * Licensed under the terms of the GNU Lesser General Public License:

 * 		http://www.opensource.org/licenses/lgpl-license.php

 * 

 * For further information visit:

 * 		http://www.fckeditor.net/

 * 

 * "Support Open Source software. What about a donation today?"

 * 

 * File Name: fckundo_ie.js

 * 	IE specific implementation for the Undo/Redo system.

 * 

 * File Authors:

 * 		Frederico Caldeira Knabben (fredck@fckeditor.net)

 */



var FCKUndo = new Object() ;



FCKUndo.SavedData = new Array() ;

FCKUndo.CurrentIndex = -1 ;

FCKUndo.TypesCount = FCKUndo.MaxTypes = 25 ;

FCKUndo.Typing = false ;



FCKUndo.SaveUndoStep = function()

{

	if ( FCK.EditMode != FCK_EDITMODE_WYSIWYG )

		return ;



	// Shrink the array to the current level.

	FCKUndo.SavedData = FCKUndo.SavedData.slice( 0, FCKUndo.CurrentIndex + 1 ) ;



	// Get the Actual HTML.

	var sHtml = FCK.EditorDocument.body.innerHTML ;



	// Cancel operation if the new step is identical to the previous one.

	if ( FCKUndo.CurrentIndex >= 0 && sHtml == FCKUndo.SavedData[ FCKUndo.CurrentIndex ][0] )

		return ;



	// If we reach the Maximun number of undo levels, we must remove the first

	// entry of the list shifting all elements.

	if ( FCKUndo.CurrentIndex + 1 >= FCKConfig.MaxUndoLevels )

		FCKUndo.SavedData.shift() ;

	else

		FCKUndo.CurrentIndex++ ;



	// Get the actual selection.

	var sBookmark ;

	if ( FCK.EditorDocument.selection.type == 'Text' )

		sBookmark = FCK.EditorDocument.selection.createRange().getBookmark() ;



	// Save the new level in front of the actual position.

	FCKUndo.SavedData[ FCKUndo.CurrentIndex ] = [ sHtml, sBookmark ] ;



	FCK.Events.FireEvent( "OnSelectionChange" ) ;

}



FCKUndo.CheckUndoState = function()

{

	return ( FCKUndo.Typing || FCKUndo.CurrentIndex > 0 ) ;

}



FCKUndo.CheckRedoState = function()

{

	return ( !FCKUndo.Typing && FCKUndo.CurrentIndex < ( FCKUndo.SavedData.length - 1 ) ) ;

}



FCKUndo.Undo = function()

{

	if ( FCKUndo.CheckUndoState() )

	{

		// If it is the first step.

		if ( FCKUndo.CurrentIndex == ( FCKUndo.SavedData.length - 1 ) )

		{

			// Save the actual state for a possible "Redo" call.

			FCKUndo.SaveUndoStep() ;

		}



		// Go a step back.

		FCKUndo._ApplyUndoLevel( --FCKUndo.CurrentIndex ) ;



		FCK.Events.FireEvent( "OnSelectionChange" ) ;

	}

}



FCKUndo.Redo = function()

{

	if ( FCKUndo.CheckRedoState() )

	{

		// Go a step forward.

		FCKUndo._ApplyUndoLevel( ++FCKUndo.CurrentIndex ) ;



		FCK.Events.FireEvent( "OnSelectionChange" ) ;

	}

}



FCKUndo._ApplyUndoLevel = function(level)

{

	var oData = FCKUndo.SavedData[ level ] ;

	

	if ( !oData )

		return ;



	// Update the editor contents with that step data.

	FCK.SetInnerHtml( oData[0] ) ;

//	FCK.EditorDocument.body.innerHTML = oData[0] ;



	if ( oData[1] ) 

	{

		var oRange = FCK.EditorDocument.selection.createRange() ;

		oRange.moveToBookmark( oData[1] ) ;

		oRange.select() ;

	}

	

	FCKUndo.TypesCount = 0 ; 

	FCKUndo.Typing = false ;

}