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diff --git a/src/js/view/mxLayoutManager.js b/src/js/view/mxLayoutManager.js
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index ee8ec65..0000000
--- a/src/js/view/mxLayoutManager.js
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-/**
- * $Id: mxLayoutManager.js,v 1.21 2012-01-04 10:01:16 gaudenz Exp $
- * Copyright (c) 2006-2010, JGraph Ltd
- */
-/**
- * Class: mxLayoutManager
- * 
- * Implements a layout manager that updates the layout for a given transaction.
- * 
- * Example:
- * 
- * (code)
- * var layoutMgr = new mxLayoutManager(graph);
- * layoutMgr.getLayout = function(cell)
- * {
- *   return layout;
- * };
- * (end)
- * 
- * Event: mxEvent.LAYOUT_CELLS
- * 
- * Fires between begin- and endUpdate after all cells have been layouted in
- * <layoutCells>. The <code>cells</code> property contains all cells that have
- * been passed to <layoutCells>.
- * 
- * Constructor: mxLayoutManager
- *
- * Constructs a new automatic layout for the given graph.
- *
- * Arguments:
- * 
- * graph - Reference to the enclosing graph. 
- */
-function mxLayoutManager(graph)
-{
-	// Executes the layout before the changes are dispatched
-	this.undoHandler = mxUtils.bind(this, function(sender, evt)
-	{
-		if (this.isEnabled())
-		{
-			this.beforeUndo(evt.getProperty('edit'));
-		}
-	});
-	
-	// Notifies the layout of a move operation inside a parent
-	this.moveHandler = mxUtils.bind(this, function(sender, evt)
-	{
-		if (this.isEnabled())
-		{
-			this.cellsMoved(evt.getProperty('cells'), evt.getProperty('event'));
-		}
-	});
-	
-	this.setGraph(graph);
-};
-
-/**
- * Extends mxEventSource.
- */
-mxLayoutManager.prototype = new mxEventSource();
-mxLayoutManager.prototype.constructor = mxLayoutManager;
-
-/**
- * Variable: graph
- * 
- * Reference to the enclosing <mxGraph>.
- */
-mxLayoutManager.prototype.graph = null;
-
-/**
- * Variable: bubbling
- * 
- * Specifies if the layout should bubble along
- * the cell hierarchy. Default is true.
- */
-mxLayoutManager.prototype.bubbling = true;
-
-/**
- * Variable: enabled
- * 
- * Specifies if event handling is enabled. Default is true.
- */
-mxLayoutManager.prototype.enabled = true;
-
-/**
- * Variable: updateHandler
- * 
- * Holds the function that handles the endUpdate event.
- */
-mxLayoutManager.prototype.updateHandler = null;
-
-/**
- * Variable: moveHandler
- * 
- * Holds the function that handles the move event.
- */
-mxLayoutManager.prototype.moveHandler = null;
-
-/**
- * Function: isEnabled
- * 
- * Returns true if events are handled. This implementation
- * returns <enabled>.
- */
-mxLayoutManager.prototype.isEnabled = function()
-{
-	return this.enabled;
-};
-
-/**
- * Function: setEnabled
- * 
- * Enables or disables event handling. This implementation
- * updates <enabled>.
- * 
- * Parameters:
- * 
- * enabled - Boolean that specifies the new enabled state.
- */
-mxLayoutManager.prototype.setEnabled = function(enabled)
-{
-	this.enabled = enabled;
-};
-
-/**
- * Function: isBubbling
- * 
- * Returns true if a layout should bubble, that is, if the parent layout
- * should be executed whenever a cell layout (layout of the children of
- * a cell) has been executed. This implementation returns <bubbling>.
- */
-mxLayoutManager.prototype.isBubbling = function()
-{
-	return this.bubbling;
-};
-
-/**
- * Function: setBubbling
- * 
- * Sets <bubbling>.
- */
-mxLayoutManager.prototype.setBubbling = function(value)
-{
-	this.bubbling = value;
-};
-
-/**
- * Function: getGraph
- * 
- * Returns the graph that this layout operates on.
- */
-mxLayoutManager.prototype.getGraph = function()
-{
-	return this.graph;
-};
-
-/**
- * Function: setGraph
- * 
- * Sets the graph that the layouts operate on.
- */
-mxLayoutManager.prototype.setGraph = function(graph)
-{
-	if (this.graph != null)
-	{
-		var model = this.graph.getModel();		
-		model.removeListener(this.undoHandler);
-		this.graph.removeListener(this.moveHandler);
-	}
-	
-	this.graph = graph;
-	
-	if (this.graph != null)
-	{
-		var model = this.graph.getModel();	
-		model.addListener(mxEvent.BEFORE_UNDO, this.undoHandler);
-		this.graph.addListener(mxEvent.MOVE_CELLS, this.moveHandler);
-	}
-};
-
-/**
- * Function: getLayout
- * 
- * Returns the layout to be executed for the given graph and parent.
- */
-mxLayoutManager.prototype.getLayout = function(parent)
-{
-	return null;
-};
-
-/**
- * Function: beforeUndo
- * 
- * Called from the undoHandler.
- *
- * Parameters:
- * 
- * cell - Array of <mxCells> that have been moved.
- * evt - Mouse event that represents the mousedown.
- */
-mxLayoutManager.prototype.beforeUndo = function(undoableEdit)
-{
-	var cells = this.getCellsForChanges(undoableEdit.changes);
-	var model = this.getGraph().getModel();
-	
-	// Adds all parent ancestors
-	if (this.isBubbling())
-	{
-		var tmp = model.getParents(cells);
-		
-		while (tmp.length > 0)
-		{
-			cells = cells.concat(tmp);
-			tmp = model.getParents(tmp);
-		}
-	}
-	
-	this.layoutCells(mxUtils.sortCells(cells, false));
-};
-
-/**
- * Function: cellsMoved
- * 
- * Called from the moveHandler.
- *
- * Parameters:
- * 
- * cell - Array of <mxCells> that have been moved.
- * evt - Mouse event that represents the mousedown.
- */
-mxLayoutManager.prototype.cellsMoved = function(cells, evt)
-{
-	if (cells != null &&
-		evt != null)
-	{
-		var point = mxUtils.convertPoint(this.getGraph().container,
-			mxEvent.getClientX(evt), mxEvent.getClientY(evt));
-		var model = this.getGraph().getModel();
-		
-		// Checks if a layout exists to take care of the moving
-		for (var i = 0; i < cells.length; i++)
-		{
-			var layout = this.getLayout(model.getParent(cells[i]));
-
-			if (layout != null)
-			{
-				layout.moveCell(cells[i], point.x, point.y);
-			}
-		}
-	}
-};
-
-/**
- * Function: getCellsForEdit
- * 
- * Returns the cells to be layouted for the given sequence of changes.
- */
-mxLayoutManager.prototype.getCellsForChanges = function(changes)
-{
-	var result = [];
-	var hash = new Object();
-	
-	for (var i = 0; i < changes.length; i++)
-	{
-		var change = changes[i];
-		
-		if (change instanceof mxRootChange)
-		{
-			return [];
-		}
-		else
-		{
-			var cells = this.getCellsForChange(change);
-			
-			for (var j = 0; j < cells.length; j++)
-			{
-				if (cells[j] != null)
-				{
-					var id = mxCellPath.create(cells[j]);
-					
-					if (hash[id] == null)
-					{
-						hash[id] = cells[j];
-						result.push(cells[j]);
-					}
-				}
-			}
-		}
-	}
-	
-	return result;
-};
-
-/**
- * Function: getCellsForChange
- * 
- * Executes all layouts which have been scheduled during the
- * changes.
- */
-mxLayoutManager.prototype.getCellsForChange = function(change)
-{
-	var model = this.getGraph().getModel();
-	
-	if (change instanceof mxChildChange)
-	{
-		return [change.child, change.previous, model.getParent(change.child)];
-	}
-	else if (change instanceof mxTerminalChange ||
-			change instanceof mxGeometryChange)
-	{
-		return [change.cell, model.getParent(change.cell)];
-	}
-	
-	return [];
-};
-
-/**
- * Function: layoutCells
- * 
- * Executes all layouts which have been scheduled during the
- * changes.
- */
-mxLayoutManager.prototype.layoutCells = function(cells)
-{
-	if (cells.length > 0)
-	{
-		// Invokes the layouts while removing duplicates
-		var model = this.getGraph().getModel();
-		
-		model.beginUpdate();
-		try 
-		{
-			var last = null;
-			
-			for (var i = 0; i < cells.length; i++)
-			{
-				if (cells[i] != model.getRoot() &&
-					cells[i] != last)
-				{
-					last = cells[i];
-					this.executeLayout(this.getLayout(last), last);
-				}
-			}
-			
-			this.fireEvent(new mxEventObject(mxEvent.LAYOUT_CELLS, 'cells', cells));
-		}
-		finally
-		{
-			model.endUpdate();
-		}
-	}
-};
-
-/**
- * Function: executeLayout
- * 
- * Executes the given layout on the given parent.
- */
-mxLayoutManager.prototype.executeLayout = function(layout, parent)
-{
-	if (layout != null && parent != null)
-	{
-		layout.execute(parent);
-	}
-};
-
-/**
- * Function: destroy
- * 
- * Removes all handlers from the <graph> and deletes the reference to it.
- */
-mxLayoutManager.prototype.destroy = function()
-{
-	this.setGraph(null);
-};