/**
 * $Id: Graph.js,v 1.37 2012-06-14 05:49:57 gaudenz Exp $
 * Copyright (c) 2006-2012, JGraph Ltd
 */
/**
 * Constructs a new graph instance. Note that the constructor does not take a
 * container because the graph instance is needed for creating the UI, which
 * in turn will create the container for the graph. Hence, the container is
 * assigned later in EditorUi.
 */
Graph = function(container, model, renderHint, stylesheet)
{
	mxGraph.call(this, container, model, renderHint, stylesheet);
	
	this.setConnectable(true);
	this.setDropEnabled(true);
	this.setPanning(true);
	this.setTooltips(!mxClient.IS_TOUCH);
	this.setAllowLoops(true);
	this.allowAutoPanning = true;
	
	this.connectionHandler.setCreateTarget(true);

	// Sets the style to be used when an elbow edge is double clicked
	this.alternateEdgeStyle = 'vertical';

	if (stylesheet == null)
	{
		this.loadStylesheet();
	}
	
	// Creates rubberband selection
    var rubberband = new mxRubberband(this);
    
    this.getRubberband = function()
    {
    	return rubberband;
    };
    
    // Adds support for HTML labels via style. Note: Currently, only the Java
    // backend supports HTML labels but CSS support is limited to the following:
    // http://docs.oracle.com/javase/6/docs/api/index.html?javax/swing/text/html/CSS.html
	this.isHtmlLabel = function(cell)
	{
		var state = this.view.getState(cell);
		var style = (state != null) ? state.style : this.getCellStyle(cell);
		
		return style['html'] == '1';
	};
	
	// Unlocks all cells
	this.isCellLocked = function(cell)
	{
		return false;
	};

	// Tap and hold brings up context menu.
	// Tolerance slightly below graph tolerance is better.
	this.connectionHandler.tapAndHoldTolerance = 16;
	
	//  Tap and hold on background starts rubberband on cell starts connecting
	var connectionHandlerTapAndHold = this.connectionHandler.tapAndHold;
	this.connectionHandler.tapAndHold = function(me, state)
	{
		if (state == null)
		{
			if (!this.graph.panningHandler.active)
			{
				rubberband.start(me.getGraphX(), me.getGraphY());
				this.graph.panningHandler.panningTrigger = false;
			}
		}
		else if (tapAndHoldStartsConnection)
		{
			connectionHandlerTapAndHold.apply(this, arguments);	
		}
		else if (this.graph.isCellSelected(state.cell) && this.graph.getSelectionCount() > 1)
		{
			this.graph.removeSelectionCell(state.cell);
		}
	};

	if (touchStyle)
	{
		this.initTouch();
	}
};

// Graph inherits from mxGraph
mxUtils.extend(Graph, mxGraph);

/**
 * Loads the stylesheet for this graph.
 */
Graph.prototype.loadStylesheet = function()
{
    var node = mxUtils.load(STYLE_PATH + '/default.xml').getDocumentElement();
	var dec = new mxCodec(node.ownerDocument);
	dec.decode(node, this.getStylesheet());
};

/**
 * Inverts the elbow edge style without removing existing styles.
 */
Graph.prototype.flipEdge = function(edge)
{
	if (edge != null)
	{
		var state = this.view.getState(edge);
		var style = (state != null) ? state.style : this.getCellStyle(edge);
		
		if (style != null)
		{
			var elbow = mxUtils.getValue(style, mxConstants.STYLE_ELBOW,
				mxConstants.ELBOW_HORIZONTAL);
			var value = (elbow == mxConstants.ELBOW_HORIZONTAL) ?
				mxConstants.ELBOW_VERTICAL : mxConstants.ELBOW_HORIZONTAL;
			this.setCellStyles(mxConstants.STYLE_ELBOW, value, [edge]);
		}
	}
};

/**
 * Disables folding for non-swimlanes.
 */
Graph.prototype.isCellFoldable = function(cell)
{
	return this.foldingEnabled && this.isSwimlane(cell);
};

/**
 * Disables drill-down for non-swimlanes.
 */
Graph.prototype.isValidRoot = function(cell)
{
	return this.isSwimlane(cell);
};

/**
 * Overrides createGroupCell to set the group style for new groups to 'group'.
 */
Graph.prototype.createGroupCell = function()
{
	var group = mxGraph.prototype.createGroupCell.apply(this, arguments);
	group.setStyle('group');
	
	return group;
};

/**
 * Overrides tooltips to show position and size
 */
Graph.prototype.getTooltipForCell = function(cell)
{
	var tip = '';
	
	if (this.getModel().isVertex(cell))
	{
		var geo = this.getCellGeometry(cell);
		
		var f2 = function(x)
		{
			return Math.round(parseFloat(x) * 100) / 100;
		};
		
		if (geo != null)
		{
			if (tip == null)
			{
				tip = '';
			}
			else if (tip.length > 0)
			{
				tip += '\n';
			}
			
			tip += 'X: ' + f2(geo.x) + '\nY: ' + f2(geo.y) + '\nW: ' + f2(geo.width) + '\nH: ' + f2(geo.height);
		}
	}
	else if (this.getModel().isEdge(cell))
	{
		tip = mxGraph.prototype.getTooltipForCell.apply(this, arguments);
	}
	
	return tip;
};

/**
 * Customized graph for touch devices.
 */
Graph.prototype.initTouch = function()
{
	// Disables new connections via "hotspot"
	this.connectionHandler.marker.isEnabled = function()
	{
		return this.graph.connectionHandler.first != null;
	};

	// Hides menu when editing starts
	this.addListener(mxEvent.START_EDITING, function(sender, evt)
	{
		this.panningHandler.hideMenu();
	});

	// Context menu for touchstyle
	var showMenu = false;
	var menuCell = null;

	// Checks if native hit detection did not return anything and does custom
	// hit detection for edges to take into account the tolerance
	this.updateMouseEvent = function(me)
	{
		mxGraph.prototype.updateMouseEvent.apply(this, arguments);

		if (me.getState() == null)
		{
			var cell = this.getCellAt(me.graphX, me.graphY);
			
			if (this.getModel().isEdge(cell))
			{
				me.state = this.view.getState(cell);
				
				if (me.state != null && me.state.shape != null)
				{
					this.container.style.cursor = me.state.shape.node.style.cursor;
				}
			}
		}
		
		if (me.getState() == null)
		{
			this.container.style.cursor = 'default';
		}
	};
	
	// Handles popup menu on touch devices (tap selected cell)
	this.fireMouseEvent = function(evtName, me, sender)
	{
		if (evtName == mxEvent.MOUSE_DOWN)
		{
			if (!this.panningHandler.isMenuShowing())
			{
				menuCell = me.getCell();
				showMenu = (menuCell != null) ? this.isCellSelected(menuCell) : this.isSelectionEmpty();
			}
			else
			{
				showMenu = false;
				menuCell = null;
			}
		}
		else if (evtName == mxEvent.MOUSE_UP)
		{
			if (showMenu && !this.isEditing())
			{
				if (!this.panningHandler.isMenuShowing())
				{
					var x = mxEvent.getClientX(me.getEvent());
					var y = mxEvent.getClientY(me.getEvent());
					
					this.panningHandler.popup(x + 16, y, menuCell, me.getEvent());
				}
				
				showMenu = false;
				menuCell = null;
				me.consume();
				
				return;
			}
			
			showMenu = false;
			menuCell = null;
		}

		mxGraph.prototype.fireMouseEvent.apply(this, arguments);

		if (evtName == mxEvent.MOUSE_MOVE && me.isConsumed())
		{
			showMenu = false;
			menuCell = null;
		}
	};
};

/**
 * Registers shapes.
 */
(function()
{
	// Touch-specific static overrides
	if (touchStyle)
	{
		// Sets constants for touch style
		mxConstants.HANDLE_SIZE = 16;
		mxConstants.LABEL_HANDLE_SIZE = 7;
		
		// Larger tolerance and grid for real touch devices
		if (mxClient.IS_TOUCH)
		{
			mxVertexHandler.prototype.tolerance = 4;
			mxEdgeHandler.prototype.tolerance = 6;
			Graph.prototype.tolerance = 14;
			Graph.prototype.gridSize = 20;
			
			// One finger pans (no rubberband selection) must start regardless of mouse button
			mxPanningHandler.prototype.selectOnPopup = false;
			mxPanningHandler.prototype.useLeftButtonForPanning = true;
			mxPanningHandler.prototype.isPanningTrigger = function(me)
			{
				var evt = me.getEvent();
			 	
			 	return (this.useLeftButtonForPanning && (this.ignoreCell || me.getState() == null)/* &&
			 			mxEvent.isLeftMouseButton(evt)*/) || (mxEvent.isControlDown(evt) &&
			 			mxEvent.isShiftDown(evt)) || (this.usePopupTrigger &&
			 		   	mxEvent.isPopupTrigger(evt));
			};
		}
		
		// Don't clear selection if multiple cells selected
		var graphHandlerMouseDown = mxGraphHandler.prototype.mouseDown;
		mxGraphHandler.prototype.mouseDown = function(sender, me)
		{
			graphHandlerMouseDown.apply(this, arguments);

			if (this.graph.isCellSelected(me.getCell()) && this.graph.getSelectionCount() > 1)
			{
				this.delayedSelection = false;
			}
		};

		// Changes order of panninghandler
		Graph.prototype.createHandlers = function(container)
		{
			this.tooltipHandler = new mxTooltipHandler(this);
			this.tooltipHandler.setEnabled(false);
			// Selection cells first
			this.selectionCellsHandler = new mxSelectionCellsHandler(this);
			this.panningHandler = new mxPanningHandler(this);
			this.panningHandler.panningEnabled = false;
			this.connectionHandler = new mxConnectionHandler(this);
			this.connectionHandler.setEnabled(false);
			this.graphHandler = new mxGraphHandler(this);
		};

		// On connect the target is selected and we clone the cell of the preview edge for insert
		mxConnectionHandler.prototype.selectCells = function(edge, target)
		{
			if (touchStyle && target != null)
			{
				this.graph.setSelectionCell(target);
			}
			else
			{
				this.graph.setSelectionCell(edge);
			}
		};

		// Overrides double click handling to use the tolerance
		// FIXME: Double click on edges in iPad needs focus on textarea
		var graphDblClick = mxGraph.prototype.dblClick;
		Graph.prototype.dblClick = function(evt, cell)
		{
			if (cell == null)
			{
				var pt = mxUtils.convertPoint(this.container,
					mxEvent.getClientX(evt), mxEvent.getClientY(evt));
				cell = this.getCellAt(pt.x, pt.y);
			}

			graphDblClick.call(this, evt, cell);
		};

		// Rounded edge and vertex handles
		var touchHandle = new mxImage(IMAGE_PATH + '/touch-handle.png', 16, 16);
		mxVertexHandler.prototype.handleImage = touchHandle;
		mxEdgeHandler.prototype.handleImage = touchHandle;
		mxOutline.prototype.sizerImage = touchHandle;
		
		// Pre-fetches touch handle
		new Image().src = touchHandle.src;

		// Adds connect icon to selected vertices
		var connectorSrc = IMAGE_PATH + '/touch-connector.png';
		
		var vertexHandlerInit = mxVertexHandler.prototype.init;
		mxVertexHandler.prototype.init = function()
		{
			vertexHandlerInit.apply(this, arguments);
			var md = (mxClient.IS_TOUCH) ? 'touchstart' : 'mousedown';

			// Only show connector image on one cell and do not show on containers
			if (showConnectorImg && this.graph.connectionHandler.isEnabled() &&
				this.graph.isCellConnectable(this.state.cell) &&
				!this.graph.isValidRoot(this.state.cell) &&
				this.graph.getSelectionCount() == 1)
			{
				this.connectorImg = mxUtils.createImage(connectorSrc);
				this.connectorImg.style.cursor = 'pointer';
				this.connectorImg.style.width = '29px';
				this.connectorImg.style.height = '29px';
				this.connectorImg.style.position = 'absolute';
				
				if (!mxClient.IS_TOUCH)
				{
					this.connectorImg.setAttribute('title', mxResources.get('connect'));
					mxEvent.redirectMouseEvents(this.connectorImg, this.graph, this.state);
				}

				// Adds 2px tolerance
				this.connectorImg.style.padding = '2px';
				
				// Starts connecting on touch/mouse down
				mxEvent.addListener(this.connectorImg, md,
					mxUtils.bind(this, function(evt)
					{
						this.graph.panningHandler.hideMenu();
						var pt = mxUtils.convertPoint(this.graph.container,
								mxEvent.getClientX(evt), mxEvent.getClientY(evt));
						this.graph.connectionHandler.start(this.state, pt.x, pt.y);
						this.graph.isMouseDown = true;
						mxEvent.consume(evt);
					})
				);

				this.graph.container.appendChild(this.connectorImg);
			}

			this.redrawTools();
		};
		
		var vertexHandlerRedraw = mxVertexHandler.prototype.redraw;
		mxVertexHandler.prototype.redraw = function()
		{
			vertexHandlerRedraw.apply(this);
			this.redrawTools();
		};
		
		mxVertexHandler.prototype.redrawTools = function()
		{
			if (this.state != null && this.connectorImg != null)
			{
				// Top right for single-sizer
				if (mxVertexHandler.prototype.singleSizer)
				{
					this.connectorImg.style.left = (this.state.x + this.state.width - this.connectorImg.offsetWidth / 2) + 'px';
					this.connectorImg.style.top = (this.state.y - this.connectorImg.offsetHeight / 2) + 'px';
				}
				else
				{
					this.connectorImg.style.left = (this.state.x + this.state.width + mxConstants.HANDLE_SIZE / 2 + 4/* - 2 padding*/) + 'px';
					this.connectorImg.style.top = (this.state.y + (this.state.height - this.connectorImg.offsetHeight) / 2) + 'px';
				}
			}
		};
		
		var vertexHandlerDestroy = mxVertexHandler.prototype.destroy;
		mxVertexHandler.prototype.destroy = function(sender, me)
		{
			vertexHandlerDestroy.apply(this, arguments);

			if (this.connectorImg != null)
			{
				this.connectorImg.parentNode.removeChild(this.connectorImg);
				this.connectorImg = null;
			}
		};
		
		// Pre-fetches touch connector
		new Image().src = connectorSrc;
	}
	else // not touchStyle
	{
		mxConnectionHandler.prototype.connectImage = new mxImage(IMAGE_PATH + '/connector.png', 15, 15);
	}

	// Cube Shape, supports size style
	function CubeShape() { };
	CubeShape.prototype = new mxCylinder();
	CubeShape.prototype.constructor = CubeShape;
	CubeShape.prototype.size = 20;
	CubeShape.prototype.redrawPath = function(path, x, y, w, h, isForeground)
	{
		var s = Math.min(w, Math.min(h, mxUtils.getValue(this.style, 'size', this.size) * this.scale));

		if (isForeground)
		{
			path.moveTo(s, h);
			path.lineTo(s, s);
			path.lineTo(0, 0);
			path.moveTo(s, s);
			path.lineTo(w, s);
			path.end();
		}
		else
		{
			path.moveTo(0, 0);
			path.lineTo(w - s, 0);
			path.lineTo(w, s);
			path.lineTo(w, h);
			path.lineTo(s, h);
			path.lineTo(0, h - s);
			path.lineTo(0, 0);
			path.close();
			path.end();
		}
	};

	mxCellRenderer.prototype.defaultShapes['cube'] = CubeShape;

	// Note Shape, supports size style
	function NoteShape() { };
	NoteShape.prototype = new mxCylinder();
	NoteShape.prototype.constructor = NoteShape;
	NoteShape.prototype.size = 30;
	NoteShape.prototype.redrawPath = function(path, x, y, w, h, isForeground)
	{
		var s = Math.min(w, Math.min(h, mxUtils.getValue(this.style, 'size', this.size) * this.scale));

		if (isForeground)
		{
			path.moveTo(w - s, 0);
			path.lineTo(w - s, s);
			path.lineTo(w, s);
			path.end();
		}
		else
		{
			path.moveTo(0, 0);
			path.lineTo(w - s, 0);
			path.lineTo(w, s);
			path.lineTo(w, h);
			path.lineTo(0, h);
			path.lineTo(0, 0);
			path.close();
			path.end();
		}
	};

	mxCellRenderer.prototype.defaultShapes['note'] = NoteShape;

	// Folder Shape, supports tabWidth, tabHeight styles
	function FolderShape() { };
	FolderShape.prototype = new mxCylinder();
	FolderShape.prototype.constructor = FolderShape;
	FolderShape.prototype.tabWidth = 60;
	FolderShape.prototype.tabHeight = 20;
	FolderShape.prototype.tabPosition = 'right';
	FolderShape.prototype.redrawPath = function(path, x, y, w, h, isForeground)
	{
		var tw = mxUtils.getValue(this.style, 'tabWidth', this.tabWidth);
		var th = mxUtils.getValue(this.style, 'tabHeight', this.tabHeight);
		var tp = mxUtils.getValue(this.style, 'tabPosition', this.tabPosition);
		var dx = Math.min(w, tw * this.scale);
		var dy = Math.min(h, th * this.scale);

		if (isForeground)
		{
			if (tp == 'left')
			{
				path.moveTo(0, dy);
				path.lineTo(dx, dy);
			}
			// Right is default
			else
			{
				path.moveTo(w - dx, dy);
				path.lineTo(w, dy);
			}
			
			path.end();
		}
		else
		{
			if (tp == 'left')
			{
				path.moveTo(0, 0);
				path.lineTo(dx, 0);
				path.lineTo(dx, dy);
				path.lineTo(w, dy);
			}
			// Right is default
			else
			{
				path.moveTo(0, dy);
				path.lineTo(w - dx, dy);
				path.lineTo(w - dx, 0);
				path.lineTo(w, 0);
			}
			
			path.lineTo(w, h);
			path.lineTo(0, h);
			path.lineTo(0, dy);
			path.close();
			path.end();
		}
	};

	mxCellRenderer.prototype.defaultShapes['folder'] = FolderShape;

	// Card Shape, supports size style
	function CardShape() { };
	CardShape.prototype = new mxCylinder();
	CardShape.prototype.constructor = CardShape;
	CardShape.prototype.size = 30;
	CardShape.prototype.redrawPath = function(path, x, y, w, h, isForeground)
	{
		var s = Math.min(w, Math.min(h, mxUtils.getValue(this.style, 'size', this.size) * this.scale));

		if (!isForeground)
		{
			path.moveTo(s, 0);
			path.lineTo(w, 0);
			path.lineTo(w, h);
			path.lineTo(0, h);
			path.lineTo(0, s);
			path.lineTo(s, 0);
			path.close();
			path.end();
		}
	};

	mxCellRenderer.prototype.defaultShapes['card'] = CardShape;

	// Tape Shape, supports size style
	function TapeShape() { };
	TapeShape.prototype = new mxCylinder();
	TapeShape.prototype.constructor = TapeShape;
	TapeShape.prototype.size = 0.4;
	TapeShape.prototype.redrawPath = function(path, x, y, w, h, isForeground)
	{
		var s = mxUtils.getValue(this.style, 'size', this.size);
		var dy = h * s;
		var fy = 1.4;

		if (!isForeground)
		{
			path.moveTo(0, dy / 2);
			path.quadTo(w / 4, dy * fy, w / 2, dy / 2);
			path.quadTo(w * 3 / 4, dy * (1 - fy), w, dy / 2);
			path.lineTo(w, h - dy / 2);
			path.quadTo(w * 3 / 4, h - dy * fy, w / 2, h - dy / 2);
			path.quadTo(w / 4, h - dy * (1 - fy), 0, h - dy / 2);
			path.lineTo(0, dy / 2);
			path.close();
			path.end();
		}
	};

	mxCellRenderer.prototype.defaultShapes['tape'] = TapeShape;

	// Tape Shape, supports size style
	function StepShape() { };
	StepShape.prototype = new mxCylinder();
	StepShape.prototype.constructor = StepShape;
	StepShape.prototype.size = 0.2;
	StepShape.prototype.redrawPath = function(path, x, y, w, h, isForeground)
	{
		var s =  w * mxUtils.getValue(this.style, 'size', this.size);

		if (!isForeground)
		{
			path.moveTo(0, 0);
			path.lineTo(w - s, 0);
			path.lineTo(w, h / 2);
			path.lineTo(w - s, h);
			path.lineTo(0, h);
			path.lineTo(s, h / 2);
			path.close();
			path.end();
		}
	};

	mxCellRenderer.prototype.defaultShapes['step'] = StepShape;

	// Tape Shape, supports size style
	function PlusShape() { };
	PlusShape.prototype = new mxCylinder();
	PlusShape.prototype.constructor = PlusShape;
	PlusShape.prototype.redrawPath = function(path, x, y, w, h, isForeground)
	{
		var border = Math.min(w / 5, h / 5) + 1;
		
		if (isForeground)
		{
			path.moveTo(w / 2, border);
			path.lineTo(w / 2, h - border);
			path.moveTo(border, h / 2);
			path.lineTo(w - border, h / 2);
			path.end();
		}
		else
		{
			path.moveTo(0, 0);
			path.lineTo(w, 0);
			path.lineTo(w, h);
			path.lineTo(0, h);
			path.close();
		}
	};

	mxCellRenderer.prototype.defaultShapes['plus'] = PlusShape;

	// Tape Shape, supports size style
	function MessageShape() { };
	MessageShape.prototype = new mxCylinder();
	MessageShape.prototype.constructor = MessageShape;
	MessageShape.prototype.redrawPath = function(path, x, y, w, h, isForeground)
	{
		if (isForeground)
		{
			path.moveTo(0, 0);
			path.lineTo(w / 2, h / 2);
			path.lineTo(w, 0);
			path.end();
		}
		else
		{
			path.moveTo(0, 0);
			path.lineTo(w, 0);
			path.lineTo(w, h);
			path.lineTo(0, h);
			path.close();
		}
	};

	mxCellRenderer.prototype.defaultShapes['message'] = MessageShape;
	
	// New Actor Shape
	function UmlActorShape() { };
	UmlActorShape.prototype = new mxCylinder();
	UmlActorShape.prototype.constructor = UmlActorShape;
	UmlActorShape.prototype.addPipe = true;
	UmlActorShape.prototype.redrawPath = function(path, x, y, w, h, isForeground)
	{
		var width = w / 3;
		var height = h / 4;
		
		if (!isForeground)
		{
			path.moveTo(w / 2, height);
			path.curveTo(w / 2 - width, height, w / 2 - width, 0, w / 2, 0);
			path.curveTo(w / 2 + width, 0, w / 2 + width, height, w / 2, height);
			path.close();

			path.moveTo(w / 2, height);
			path.lineTo(w / 2, 2 * h / 3);
			
			// Arms
			path.moveTo(w / 2, h / 3);
			path.lineTo(0, h / 3);
			path.moveTo(w / 2, h / 3);
			path.lineTo(w, h / 3);
			
			// Legs
			path.moveTo(w / 2, 2 * h / 3);
			path.lineTo(0, h);
			path.moveTo(w / 2, 2 * h / 3);
			path.lineTo(w, h);
			path.end();
		}
	};

	// Replaces existing actor shape
	mxCellRenderer.prototype.defaultShapes['umlActor'] = UmlActorShape;

	// New Actor Shape
	function LollipopShape() { };
	LollipopShape.prototype = new mxCylinder();
	LollipopShape.prototype.constructor = LollipopShape;
	LollipopShape.prototype.size = 10;
	LollipopShape.prototype.addPipe = true;
	LollipopShape.prototype.redrawPath = function(path, x, y, w, h, isForeground)
	{
		var ss = this.scale * mxUtils.getValue(this.style, 'size', this.size);
		var width = ss * 2 / 3;
		var height = ss;
		
		if (!isForeground)
		{
			path.moveTo(w / 2, height);
			path.curveTo(w / 2 - width, height, w / 2 - width, 0, w / 2, 0);
			path.curveTo(w / 2 + width, 0, w / 2 + width, height, w / 2, height);
			path.close();

			path.moveTo(w / 2, height);
			path.lineTo(w / 2, h);
			path.end();
		}
	};

	// Replaces existing actor shape
	mxCellRenderer.prototype.defaultShapes['lollipop'] = LollipopShape;
	
	// Folder Shape, supports tabWidth, tabHeight styles
	function ComponentShape() { };
	ComponentShape.prototype = new mxCylinder();
	ComponentShape.prototype.constructor = ComponentShape;
	ComponentShape.prototype.jettyWidth = 32;
	ComponentShape.prototype.jettyHeight = 12;
	ComponentShape.prototype.redrawPath = function(path, x, y, w, h, isForeground)
	{
		var jw = mxUtils.getValue(this.style, 'jettyWidth', this.jettyWidth);
		var jh = mxUtils.getValue(this.style, 'jettyHeight', this.jettyHeight);
		var dx = jw * this.scale;
		var dy = jh * this.scale;
		var x0 = dx / 2;
		var x1 = x0 + dx / 2;
		var y0 = 0.3 * h - dy / 2;
		var y1 = 0.7 * h - dy / 2;

		if (isForeground)
		{
			path.moveTo(x0, y0);
			path.lineTo(x1, y0);
			path.lineTo(x1, y0 + dy);
			path.lineTo(x0, y0 + dy);
			path.moveTo(x0, y1);
			path.lineTo(x1, y1);
			path.lineTo(x1, y1 + dy);
			path.lineTo(x0, y1 + dy);
			path.end();
		}
		else
		{
			path.moveTo(x0, 0);
			path.lineTo(w, 0);
			path.lineTo(w, h);
			path.lineTo(x0, h);
			path.lineTo(x0, y1 + dy);
			path.lineTo(0, y1 + dy);
			path.lineTo(0, y1);
			path.lineTo(x0, y1);
			path.lineTo(x0, y0 + dy);
			path.lineTo(0, y0 + dy);
			path.lineTo(0, y0);
			path.lineTo(x0, y0);
			path.close();
			path.end();
		}
	};

	mxCellRenderer.prototype.defaultShapes['component'] = ComponentShape;
	
	// State Shapes derives from double ellipse
	function StateShape() { };
	StateShape.prototype = new mxDoubleEllipse();
	StateShape.prototype.constructor = StateShape;
	StateShape.prototype.outerStroke = true;
	StateShape.prototype.createSvg = function()
	{
		var g = mxDoubleEllipse.prototype.createSvg.apply(this, arguments);
		this.foreground.setAttribute('fill', this.innerNode.getAttribute('fill'));
		this.foreground.setAttribute('stroke', this.stroke);
		this.innerNode.setAttribute('fill', 'none');
		this.innerNode.setAttribute('stroke', (this.outerStroke) ? this.stroke : 'none');
		
		return g;
	};
	StateShape.prototype.redrawSvg = function()
	{
		mxDoubleEllipse.prototype.redrawSvg.apply(this, arguments);
		
		// Workaround for visible background
		this.innerNode.setAttribute('fill', 'none');
		
		if (this.shadowNode != null)
		{
			this.shadowNode.setAttribute('cx', this.foreground.getAttribute('cx'));
			this.shadowNode.setAttribute('cy', this.foreground.getAttribute('cy'));
			this.shadowNode.setAttribute('rx', this.foreground.getAttribute('rx'));
			this.shadowNode.setAttribute('ry', this.foreground.getAttribute('ry'));
		}
	};
	StateShape.prototype.createVml = function()
	{
		var result = mxDoubleEllipse.prototype.createVml.apply(this, arguments);
		
		if (this.fillNode != null)
		{
			this.foreground.appendChild(this.fillNode);
			this.foreground.filled = 'true';
		}
		
		this.background.filled = 'false';
		this.background.stroked = (this.outerStroke) ? 'true' : 'false';
		
		if (this.shadowNode != null)
		{
			this.foreground.appendChild(this.shadowNode);
		}
		
		return result;
	};
	StateShape.prototype.reconfigure = function()
	{
		mxShape.prototype.reconfigure.apply(this, arguments);
		
		if (this.dialect == mxConstants.DIALECT_SVG)
		{
			this.innerNode.setAttribute('fill', 'none');
		}
		else if (mxUtils.isVml(this.node))
		{
			this.background.filled = 'false';
		}
	};

	mxCellRenderer.prototype.defaultShapes['endState'] = StateShape;

	function StartStateShape() { };
	StartStateShape.prototype = new StateShape();
	StartStateShape.prototype.constructor = StartStateShape;
	StartStateShape.prototype.outerStroke = false;
	
	mxCellRenderer.prototype.defaultShapes['startState'] = StartStateShape;

	// Image export for state shapes
	var imageExportInitShapes = mxImageExport.prototype.initShapes;
	mxImageExport.prototype.initShapes = function()
	{
		imageExportInitShapes.apply(this, arguments);

		function createStateShape(outerStroke)
		{
			return {
				drawShape: function(canvas, state, bounds, background)
				{
					var x = bounds.x;
					var y = bounds.y;
					var w = bounds.width;
					var h = bounds.height;
					
					if (background)
					{
						var inset = Math.min(4, Math.min(w / 5, h / 5));
						x += inset;
						y += inset;
						w -= 2 * inset;
						h -= 2 * inset;
						
						if (w > 0 && h > 0)
						{
							canvas.ellipse(x, y, w, h);
						}
						
						return true;
					}
					else
					{
						canvas.fillAndStroke();
		
						if (outerStroke)
						{
							canvas.ellipse(x, y, w, h);
							canvas.stroke();
						}
					}
				}
			};
		};
		
		this.shapes['endState'] = createStateShape(true);
		this.shapes['startState'] = createStateShape(false);
	};

	// Custom edge shape
	function LinkShape() { };
	LinkShape.prototype = new mxArrow();
	LinkShape.prototype.constructor = LinkShape;
	LinkShape.prototype.enableFill = false;
	LinkShape.prototype.addPipe = true;

	LinkShape.prototype.augmentBoundingBox = function(bbox)
	{
		bbox.grow(10 * this.scale);
		
		mxShape.prototype.augmentBoundingBox.apply(this, arguments);
	};

	LinkShape.prototype.redrawPath = function(path, x, y, w, h)
	{
		// All points are offset
		path.translate.x -= x;
		path.translate.y -= y;

		// Geometry of arrow
		var width = 10 * this.scale;

		// Base vector (between end points)
		var p0 = this.points[0];
		var pe = this.points[this.points.length - 1];
		
		var dx = pe.x - p0.x;
		var dy = pe.y - p0.y;
		var dist = Math.sqrt(dx * dx + dy * dy);
		var length = dist;
		
		// Computes the norm and the inverse norm
		var nx = dx / dist;
		var ny = dy / dist;
		var basex = length * nx;
		var basey = length * ny;
		var floorx = width * ny/3;
		var floory = -width * nx/3;
		
		// Computes points
		var p0x = p0.x - floorx / 2;
		var p0y = p0.y - floory / 2;
		var p1x = p0x + floorx;
		var p1y = p0y + floory;
		var p2x = p1x + basex;
		var p2y = p1y + basey;
		var p3x = p2x + floorx;
		var p3y = p2y + floory;
		// p4 not needed
		var p5x = p3x - 3 * floorx;
		var p5y = p3y - 3 * floory;
		
		// LATER: Add support for n points
		path.moveTo(p1x, p1y);
		path.lineTo(p2x, p2y);
		path.moveTo(p5x + floorx, p5y + floory);
		path.lineTo(p0x, p0y);
		path.end();
	};

	mxCellRenderer.prototype.defaultShapes['link'] = LinkShape;
	
	// Defines custom marker
	mxMarker.markers['dash'] = function(node, type, pe, nx, ny, strokewidth, size, scale, isVml)
	{
		nx = nx * (size + strokewidth);
		ny = ny * (size + strokewidth);
		
		if (isVml)
		{
			node.setAttribute('path', 'm' + Math.floor(pe.x - nx / 2- ny / 2) + ' ' + Math.floor(pe.y - ny / 2 + nx / 2) +
				' l ' + Math.floor(pe.x + ny / 2 - 3 * nx / 2) + ' ' + Math.floor(pe.y - 3 * ny / 2 - nx / 2) +
				' e');
		}
		else
		{
			node.setAttribute('d', 'M ' + (pe.x - nx / 2 - ny / 2) + ' ' + (pe.y - ny / 2 + nx / 2) +
					' L ' + (pe.x + ny / 2 - 3 * nx / 2) + ' ' + (pe.y - 3 * ny / 2 - nx / 2) +
					' z');
		}
		
		// Returns the offset for the edge
		return new mxPoint(0, 0);
	};

	// Registers the marker in mxImageExport
	var mxImageExportInitMarkers = mxImageExport.prototype.initMarkers;
	mxImageExport.prototype.initMarkers = function()
	{
		mxImageExportInitMarkers.apply(this, arguments);
		
		this.markers['dash'] = function(canvas, state, type, pe, unitX, unitY, size, source, sw)
		{
			nx = unitX * (size + sw);
			ny = unitY * (size + sw);
			
			canvas.begin();
			canvas.moveTo(pe.x - nx / 2 - ny / 2, pe.y - ny / 2 + nx / 2);
			canvas.lineTo(pe.x + ny / 2 - 3 * nx / 2, pe.y - 3 * ny / 2 - nx / 2);
			canvas.stroke();
			
			// Returns the offset for the edge
			return new mxPoint(0, 0);
		};
	};

	// Enables crisp rendering in SVG except for connectors, actors, cylinder,
	// ellipses must be enabled after rendering the sidebar items
	mxShape.prototype.crisp = true;
	mxShape.prototype.roundedCrispSvg = false;
	mxActor.prototype.crisp = false;
	mxCylinder.prototype.crisp = false;
	mxEllipse.prototype.crisp = false;
	mxDoubleEllipse.prototype.crisp = false;
	mxConnector.prototype.crisp = false;
	FolderShape.prototype.crisp = true;
	ComponentShape.prototype.crisp = true;
	
	// Implements custom handlers
	var handlers = {'swimlane': mxSwimlaneHandler, 'folder': mxFolderHandler, 'cube': mxCubeHandler,
			'card': mxCardHandler, 'note': mxNoteHandler, 'step': mxStepHandler, 'tape': mxTapeHandler};

	Graph.prototype.createHandler = function(state)
	{
		if (state != null)
		{
			var ctor = handlers[state.style['shape']];

			if (ctor != null)
			{
				return new ctor(state);
			}
		}
		
		return mxGraph.prototype.createHandler.apply(this, arguments);
	};

	// Swimlane handler	
	function mxSwimlaneHandler(state)
	{
		mxVertexHandler.call(this, state);
	};

	mxUtils.extend(mxSwimlaneHandler, mxVertexHandler);

	mxSwimlaneHandler.prototype.useGridForSpecialHandle = false;
	
	mxSwimlaneHandler.prototype.init = function()
	{
		this.horizontal = mxUtils.getValue(this.state.style, mxConstants.STYLE_HORIZONTAL, true);
		var graph = this.state.view.graph;
		var size = 10;
		var bounds = new mxRectangle(0, 0, size, size);
		this.specialHandle = new mxRhombus(bounds, mxConstants.HANDLE_FILLCOLOR, mxConstants.HANDLE_STROKECOLOR);
		this.specialHandle.crisp = this.crisp;
		this.specialHandle.dialect = (graph.dialect != mxConstants.DIALECT_SVG) ?
				mxConstants.DIALECT_VML : mxConstants.DIALECT_SVG;
		this.specialHandle.init(graph.getView().getOverlayPane());
		this.specialHandle.node.style.cursor = this.getSpecialHandleCursor();

		mxEvent.redirectMouseEvents(this.specialHandle.node, graph, this.state);
		mxVertexHandler.prototype.init.apply(this, arguments);
	};
	
	mxSwimlaneHandler.prototype.getSpecialHandleCursor = function()
	{
		return (this.horizontal) ? 'n-resize' : 'w-resize';
	};
	
	mxSwimlaneHandler.prototype.redraw = function()
	{
		mxVertexHandler.prototype.redraw.apply(this, arguments);

		var size = this.specialHandle.bounds.width;
		this.specialHandle.bounds = this.getSpecialHandleBounds(size);
		this.specialHandle.redraw();
	};
	
	mxSwimlaneHandler.prototype.getSpecialHandleBounds = function(size)
	{
		var scale = this.graph.getView().scale;
		var start = this.state.view.graph.getStartSize(this.state.cell);
		
		if (this.horizontal)
		{
			return new mxRectangle(this.state.x + (this.state.width - size) / 2,
				this.state.y + start.height * scale - size / 2, size, size);
		}
		else
		{
			return new mxRectangle(this.state.x + start.width * scale - size / 2,
					this.state.y + (this.state.height - size) / 2, size, size);
		}
	};
	
	mxSwimlaneHandler.prototype.destroy = function()
	{
		mxVertexHandler.prototype.destroy.apply(this, arguments);
		
		if (this.specialHandle != null)
		{
			this.specialHandle.destroy();
			this.specialHandle = null;
		}
	};
	
	mxSwimlaneHandler.prototype.getHandleForEvent = function(me)
	{
		if (me.isSource(this.specialHandle))
		{
			return -2;
		}
		
		return mxVertexHandler.prototype.getHandleForEvent.apply(this, arguments);
	};
	
	mxSwimlaneHandler.prototype.constrainPoint = function(point)
	{
		point.x = Math.max(this.state.x, Math.min(this.state.x + this.state.width, point.x));
		point.y = Math.max(this.state.y, Math.min(this.state.y + this.state.height, point.y));
	};
	
	mxSwimlaneHandler.prototype.mouseMove = function(sender, me)
	{
		if (!me.isConsumed() && this.index == -2)
		{
			var point = new mxPoint(me.getGraphX(), me.getGraphY());
			this.constrainPoint(point);
			var gridEnabled = this.graph.isGridEnabledEvent(me.getEvent());
			var scale = this.graph.getView().scale;
			
			if (gridEnabled && this.useGridForSpecialHandle)
			{
				point.x = this.graph.snap(point.x / scale) * scale;
				point.y = this.graph.snap(point.y / scale) * scale;
			}
			
			this.updateStyle(point);			
			this.moveSizerTo(this.specialHandle, point.x, point.y);
			this.state.view.graph.cellRenderer.redraw(this.state, true);
			me.consume();
		}
		else
		{
			mxVertexHandler.prototype.mouseMove.apply(this, arguments);
		}
	};
	
	mxSwimlaneHandler.prototype.updateStyle = function(point)
	{
		var startSize = 0;

		if (this.horizontal)
		{
			point.x = this.state.x + this.state.width / 2;
			startSize = point.y - this.state.y;
		}
		else
		{
			point.y = this.state.y + this.state.height / 2;
			startSize = point.x - this.state.x;
		}

		var scale = this.graph.getView().scale;
		this.state.style['startSize'] = Math.round(Math.max(1, startSize) / scale);
	};
	
	mxSwimlaneHandler.prototype.mouseUp = function(sender, me)
	{
		if (!me.isConsumed() && this.index == -2)
		{
			this.applyStyle();
			this.reset();
			me.consume();
		}
		else
		{
			mxVertexHandler.prototype.mouseUp.apply(this, arguments);
		}
	};
	
	mxSwimlaneHandler.prototype.applyStyle = function()
	{
		this.state.view.graph.setCellStyles('startSize', this.state.style['startSize'], [this.state.cell]);
	};
	
	// Folder Handler
	function mxFolderHandler(state)
	{
		mxSwimlaneHandler.call(this, state);
	};

	mxUtils.extend(mxFolderHandler, mxSwimlaneHandler);
	
	mxFolderHandler.prototype.getSpecialHandleCursor = function()
	{
		return 'default';
	};

	mxFolderHandler.prototype.getSpecialHandleBounds = function(size)
	{
		var direction = mxUtils.getValue(this.state.style, 'direction', 'east');
		var bounds = new mxRectangle(this.state.x, this.state.y, this.state.width, this.state.height);
		
		if (direction == 'south' || direction == 'north')
		{
			bounds.x += (bounds.width - bounds.height) / 2;
			bounds.y += (bounds.height - bounds.width) / 2;
			var tmp = bounds.width;
			bounds.width = bounds.height;
			bounds.height = tmp;
		}
		
		var pt = this.getSpecialHandlePoint(bounds);
		var cos = 1;
		var sin = 0;
		
		if (direction == 'south')
		{
			cos = 0;
			sin = 1;
		}
		else if (direction == 'west')
		{
			cos = -1;
		}
		else if (direction == 'north')
		{
			cos = 0;
			sin = -1;
		}

		pt = mxUtils.getRotatedPoint(pt, cos, sin,
			new mxPoint(this.state.getCenterX(), this.state.getCenterY()));

		return new mxRectangle(pt.x - size / 2, pt.y - size / 2, size, size);
	};

	mxFolderHandler.prototype.getSpecialHandlePoint = function(bounds)
	{
		var scale = this.graph.getView().scale;
		var tw = Math.min(bounds.width, mxUtils.getValue(this.state.style, 'tabWidth', 60) * scale);
		var th = Math.min(bounds.height, mxUtils.getValue(this.state.style, 'tabHeight', 20) * scale);
		
		var tp = mxUtils.getValue(this.state.style, 'tabPosition', 'right');
		var x = (tp == 'left') ? bounds.x + tw : bounds.x + bounds.width - tw;

		return new mxPoint(x, bounds.y + th);
	};
	
	mxFolderHandler.prototype.updateStyle = function(point)
	{
		var pt = new mxPoint(point.x, point.y);
		var direction = mxUtils.getValue(this.state.style, 'direction', 'east');
		var bounds = new mxRectangle(this.state.x, this.state.y, this.state.width, this.state.height);
		
		if (direction == 'south' || direction == 'north')
		{
			bounds.x += (bounds.width - bounds.height) / 2;
			bounds.y += (bounds.height - bounds.width) / 2;
			var tmp = bounds.width;
			bounds.width = bounds.height;
			bounds.height = tmp;
		}
		
		var cos = 1;
		var sin = 0;
		
		if (direction == 'south')
		{
			cos = 0;
			sin = -1;
		}
		else if (direction == 'west')
		{
			cos = -1;
		}
		else if (direction == 'north')
		{
			cos = 0;
			sin = 1;
		}
		
		// TODO: Rotate bounds
		//var bounds = new mxRectangle(this.state.x, this.state.y, this.state.width, this.state.height);
		pt = mxUtils.getRotatedPoint(pt, cos, sin,
			new mxPoint(this.state.getCenterX(), this.state.getCenterY()));
		
		var result = this.updateStyleUnrotated(pt, bounds);
		
		// Modifies point to use rotated coordinates of return value
		if (result != null)
		{
			if (direction == 'south' || direction == 'north')
			{
				cos *= -1;
				sin *= -1;
			}
			
			result = mxUtils.getRotatedPoint(result, cos, sin,
					new mxPoint(this.state.getCenterX(), this.state.getCenterY()));
			point.x = result.x;
			point.y = result.y;
		}
	};
	
	mxFolderHandler.prototype.updateStyleUnrotated = function(pt, bounds)
	{
		var tp = mxUtils.getValue(this.state.style, 'tabPosition', 'right');
		var tw = (tp == 'left') ? pt.x - bounds.x : bounds.x + bounds.width - pt.x;
		var th = pt.y - bounds.y;
		
		var scale = this.graph.getView().scale;
		this.state.style['tabWidth'] = Math.round(Math.max(1, tw) / scale);
		this.state.style['tabHeight'] =  Math.round(Math.max(1, th) / scale);
	};
	
	mxFolderHandler.prototype.applyStyle = function()
	{
		var model = this.graph.getModel();
		model.beginUpdate();
		try
		{
			this.state.view.graph.setCellStyles('tabWidth', this.state.style['tabWidth'], [this.state.cell]);
			this.state.view.graph.setCellStyles('tabHeight', this.state.style['tabHeight'], [this.state.cell]);
		}
		finally
		{
			model.endUpdate();
		}
	};
	
	// Cube Handler
	function mxCubeHandler(state)
	{
		mxFolderHandler.call(this, state);
	};

	mxUtils.extend(mxCubeHandler, mxFolderHandler);
	
	mxCubeHandler.prototype.defaultValue = 20;

	mxCubeHandler.prototype.scaleFactor = 1;
	
	mxCubeHandler.prototype.getSpecialHandlePoint = function(bounds)
	{
		var scale = this.graph.getView().scale;
		var sz = Math.min(bounds.width, Math.min(bounds.height,
			mxUtils.getValue(this.state.style, 'size', this.defaultValue) * scale / this.scaleFactor));
		
		return new mxPoint(bounds.x + sz, bounds.y + sz);
	};

	mxCubeHandler.prototype.updateStyleUnrotated = function(pt, bounds)
	{
		var size = Math.min(Math.min(bounds.width / this.scaleFactor, pt.x - bounds.x),
				Math.min(bounds.height / this.scaleFactor, pt.y - bounds.y));
		var scale = this.graph.getView().scale;
		this.state.style['size'] = Math.round(Math.max(1, size) / scale) * this.scaleFactor;
		
		// Stays on the diagonal
		return new mxPoint(bounds.x + size, bounds.y + size);
	};
	
	mxCubeHandler.prototype.applyStyle = function()
	{
		this.state.view.graph.setCellStyles('size', this.state.style['size'], [this.state.cell]);
	};
	
	// Card Handler
	function mxCardHandler(state)
	{
		mxCubeHandler.call(this, state);
	};

	mxUtils.extend(mxCardHandler, mxCubeHandler);
	
	mxCardHandler.prototype.defaultValue = 30;

	mxCardHandler.prototype.scaleFactor = 2;
	
	// Note Handler
	function mxNoteHandler(state)
	{
		mxCubeHandler.call(this, state);
	};

	mxUtils.extend(mxNoteHandler, mxCubeHandler);
	
	mxNoteHandler.prototype.defaultValue = 30;

	mxNoteHandler.prototype.scaleFactor = 1;
	
	mxNoteHandler.prototype.getSpecialHandlePoint = function(bounds)
	{
		var scale = this.graph.getView().scale;
		var sz = Math.min(bounds.width, Math.min(bounds.height,
				mxUtils.getValue(this.state.style, 'size', this.defaultValue) * scale / this.scaleFactor));
		
		return new mxPoint(bounds.x + bounds.width - sz, bounds.y + sz);
	};
	
	mxNoteHandler.prototype.updateStyleUnrotated = function(pt, bounds)
	{
		var size = Math.min(Math.min(bounds.width / this.scaleFactor, pt.x - bounds.x + bounds.width),
				Math.min(bounds.height / this.scaleFactor, pt.y - bounds.y));
		var scale = this.graph.getView().scale;
		this.state.style['size'] = Math.round(Math.max(1, size) / scale) * this.scaleFactor;
		
		// Stays on the diagonal
		return new mxPoint(bounds.x + bounds.width - size, bounds.y + size);
	};
	
	// Step Handler
	function mxStepHandler(state)
	{
		mxCubeHandler.call(this, state);
	};

	mxUtils.extend(mxStepHandler, mxCubeHandler);
	
	mxStepHandler.prototype.defaultValue = 0.2;

	mxStepHandler.prototype.scaleFactor = 1;
	
	mxStepHandler.prototype.getSpecialHandlePoint = function(bounds)
	{
		var sz = mxUtils.getValue(this.state.style, 'size', this.defaultValue);
		
		return new mxPoint(bounds.x + bounds.width * sz, bounds.y + bounds.height / 2);
	};

	mxStepHandler.prototype.updateStyleUnrotated = function(pt, bounds)
	{
		var size = Math.min(1, (pt.x - bounds.x) / bounds.width);
		this.state.style['size'] = size;
		
		return new mxPoint(bounds.x + size * bounds.width, bounds.y + bounds.height / 2);
	};
	
	// Tape Handler
	function mxTapeHandler(state)
	{
		mxCubeHandler.call(this, state);
	};

	mxUtils.extend(mxTapeHandler, mxCubeHandler);
	
	mxTapeHandler.prototype.defaultValue = 0.4;

	mxTapeHandler.prototype.scaleFactor = 1;
	
	mxTapeHandler.prototype.getSpecialHandlePoint = function(bounds)
	{
		var sz = mxUtils.getValue(this.state.style, 'size', this.defaultValue);

		return new mxPoint(bounds.x + bounds.width / 2, bounds.y + sz * bounds.height / 2);
	};

	mxTapeHandler.prototype.updateStyleUnrotated = function(pt, bounds)
	{
		var size = Math.min(1, ((pt.y - bounds.y) / bounds.height) * 2);
		this.state.style['size'] = size;
		
		return new mxPoint(bounds.x + bounds.width / 2, bounds.y + size * bounds.height / 2);
	};
	
	// Constraints
	mxGraph.prototype.getAllConnectionConstraints = function(terminal, source)
	{
		if (terminal != null && terminal.shape != null &&
			terminal.shape instanceof mxStencilShape)
		{
			if (terminal.shape.stencil != null)
			{
				return terminal.shape.stencil.constraints;
			}
		}
		else if (terminal.shape.constraints != null)
		{
			return terminal.shape.constraints;
		}

		return null;
	};

	mxRectangleShape.prototype.constraints = [new mxConnectionConstraint(new mxPoint(0.25, 0), true),
	                                          new mxConnectionConstraint(new mxPoint(0.5, 0), true),
	                                          new mxConnectionConstraint(new mxPoint(0.75, 0), true),
	        	              		 new mxConnectionConstraint(new mxPoint(0, 0.25), true),
	        	              		 new mxConnectionConstraint(new mxPoint(0, 0.5), true),
	        	              		 new mxConnectionConstraint(new mxPoint(0, 0.75), true),
	        	            		 new mxConnectionConstraint(new mxPoint(1, 0.25), true),
	        	            		 new mxConnectionConstraint(new mxPoint(1, 0.5), true),
	        	            		 new mxConnectionConstraint(new mxPoint(1, 0.75), true),
	        	            		 new mxConnectionConstraint(new mxPoint(0.25, 1), true),
	        	            		 new mxConnectionConstraint(new mxPoint(0.5, 1), true),
	        	            		 new mxConnectionConstraint(new mxPoint(0.75, 1), true)];
	mxLabel.prototype.constraints = mxRectangleShape.prototype.constraints;
	mxImageShape.prototype.constraints = mxRectangleShape.prototype.constraints;
	mxSwimlane.prototype.constraints = mxRectangleShape.prototype.constraints;
	PlusShape.prototype.constraints = mxRectangleShape.prototype.constraints;
	NoteShape.prototype.constraints = mxRectangleShape.prototype.constraints;
	CardShape.prototype.constraints = mxRectangleShape.prototype.constraints;
	CubeShape.prototype.constraints = mxRectangleShape.prototype.constraints;
	FolderShape.prototype.constraints = mxRectangleShape.prototype.constraints;
	mxCylinder.prototype.constraints = [new mxConnectionConstraint(new mxPoint(0.15, 0.05), false),
                                        new mxConnectionConstraint(new mxPoint(0.5, 0), true),
                                        new mxConnectionConstraint(new mxPoint(0.85, 0.05), false),
      	              		 new mxConnectionConstraint(new mxPoint(0, 0.3), true),
      	              		 new mxConnectionConstraint(new mxPoint(0, 0.5), true),
      	              		 new mxConnectionConstraint(new mxPoint(0, 0.7), true),
      	            		 new mxConnectionConstraint(new mxPoint(1, 0.3), true),
      	            		 new mxConnectionConstraint(new mxPoint(1, 0.5), true),
      	            		 new mxConnectionConstraint(new mxPoint(1, 0.7), true),
      	            		 new mxConnectionConstraint(new mxPoint(0.15, 0.95), false),
      	            		 new mxConnectionConstraint(new mxPoint(0.5, 1), true),
      	            		 new mxConnectionConstraint(new mxPoint(0.85, 0.95), false)];
	UmlActorShape.prototype.constraints = [new mxConnectionConstraint(new mxPoint(0.25, 0), true),
	                                          new mxConnectionConstraint(new mxPoint(0.5, 0), true),
	                                          new mxConnectionConstraint(new mxPoint(0.75, 0), true),
	        	              		 new mxConnectionConstraint(new mxPoint(0, 0.25), true),
	        	              		 new mxConnectionConstraint(new mxPoint(0, 0.5), true),
	        	              		 new mxConnectionConstraint(new mxPoint(0, 0.75), true),
	        	            		 new mxConnectionConstraint(new mxPoint(1, 0.25), true),
	        	            		 new mxConnectionConstraint(new mxPoint(1, 0.5), true),
	        	            		 new mxConnectionConstraint(new mxPoint(1, 0.75), true),
	        	            		 new mxConnectionConstraint(new mxPoint(0.25, 1), true),
	        	            		 new mxConnectionConstraint(new mxPoint(0.5, 1), true),
	        	            		 new mxConnectionConstraint(new mxPoint(0.75, 1), true)];
	ComponentShape.prototype.constraints = [new mxConnectionConstraint(new mxPoint(0.25, 0), true),
	                                          new mxConnectionConstraint(new mxPoint(0.5, 0), true),
	                                          new mxConnectionConstraint(new mxPoint(0.75, 0), true),
	        	              		 new mxConnectionConstraint(new mxPoint(0, 0.3), true),
	        	              		 new mxConnectionConstraint(new mxPoint(0, 0.7), true),
	        	            		 new mxConnectionConstraint(new mxPoint(1, 0.25), true),
	        	            		 new mxConnectionConstraint(new mxPoint(1, 0.5), true),
	        	            		 new mxConnectionConstraint(new mxPoint(1, 0.75), true),
	        	            		 new mxConnectionConstraint(new mxPoint(0.25, 1), true),
	        	            		 new mxConnectionConstraint(new mxPoint(0.5, 1), true),
	        	            		 new mxConnectionConstraint(new mxPoint(0.75, 1), true)];
	mxActor.prototype.constraints = [new mxConnectionConstraint(new mxPoint(0.5, 0), true),
   	              		 new mxConnectionConstraint(new mxPoint(0.25, 0.2), false),
   	              		 new mxConnectionConstraint(new mxPoint(0.1, 0.5), false),
   	              		 new mxConnectionConstraint(new mxPoint(0, 0.75), true),
   	            		 new mxConnectionConstraint(new mxPoint(0.75, 0.25), false),
   	            		 new mxConnectionConstraint(new mxPoint(0.9, 0.5), false),
   	            		 new mxConnectionConstraint(new mxPoint(1, 0.75), true),
   	            		 new mxConnectionConstraint(new mxPoint(0.25, 1), true),
   	            		 new mxConnectionConstraint(new mxPoint(0.5, 1), true),
   	            		 new mxConnectionConstraint(new mxPoint(0.75, 1), true)];
	TapeShape.prototype.constraints = [new mxConnectionConstraint(new mxPoint(0, 0.35), false),
	                                   new mxConnectionConstraint(new mxPoint(0, 0.5), false),
	                                   new mxConnectionConstraint(new mxPoint(0, 0.65), false),
	                                   new mxConnectionConstraint(new mxPoint(1, 0.35), false),
		                                new mxConnectionConstraint(new mxPoint(1, 0.5), false),
		                                new mxConnectionConstraint(new mxPoint(1, 0.65), false),
										new mxConnectionConstraint(new mxPoint(0.25, 1), false),
										new mxConnectionConstraint(new mxPoint(0.75, 0), false)];
	// TODO: Relative ports
	StepShape.prototype.constraints = [new mxConnectionConstraint(new mxPoint(0.25, 0), true),
                                       new mxConnectionConstraint(new mxPoint(0.5, 0), true),
                                       new mxConnectionConstraint(new mxPoint(0.75, 0), true),
                                       new mxConnectionConstraint(new mxPoint(0.25, 1), true),
  	        	            		 	new mxConnectionConstraint(new mxPoint(0.5, 1), true),
  	        	            		 	new mxConnectionConstraint(new mxPoint(0.75, 1), true),
	                                   new mxConnectionConstraint(new mxPoint(0.1, 0.25), false),
	                                   new mxConnectionConstraint(new mxPoint(0.2, 0.5), false),
	                                   new mxConnectionConstraint(new mxPoint(0.1, 0.75), false),
	                                   new mxConnectionConstraint(new mxPoint(0.9, 0.25), false),
		                                new mxConnectionConstraint(new mxPoint(1, 0.5), false),
		                                new mxConnectionConstraint(new mxPoint(0.9, 0.75), false)];
	mxLine.prototype.constraints = [new mxConnectionConstraint(new mxPoint(0, 0.5), false),
	                                new mxConnectionConstraint(new mxPoint(0.25, 0.5), false),
	                                new mxConnectionConstraint(new mxPoint(0.75, 0.5), false),
									new mxConnectionConstraint(new mxPoint(1, 0.5), false)];
	LollipopShape.prototype.constraints = [new mxConnectionConstraint(new mxPoint(0.5, 0), false),
										new mxConnectionConstraint(new mxPoint(0.5, 1), false)];
	mxEllipse.prototype.constraints = [new mxConnectionConstraint(new mxPoint(0, 0), true), new mxConnectionConstraint(new mxPoint(1, 0), true),
	                                   new mxConnectionConstraint(new mxPoint(0, 1), true), new mxConnectionConstraint(new mxPoint(1, 1), true),
	                                   new mxConnectionConstraint(new mxPoint(0.5, 0), true), new mxConnectionConstraint(new mxPoint(0.5, 1), true),
	          	              		   new mxConnectionConstraint(new mxPoint(0, 0.5), true), new mxConnectionConstraint(new mxPoint(1, 0.5))];
	mxDoubleEllipse.prototype.constraints = mxEllipse.prototype.constraints;
	mxRhombus.prototype.constraints = mxEllipse.prototype.constraints;
	mxTriangle.prototype.constraints = [new mxConnectionConstraint(new mxPoint(0, 0.25), true),
	                                    new mxConnectionConstraint(new mxPoint(0, 0.5), true),
	                                   new mxConnectionConstraint(new mxPoint(0, 0.75), true),
	                                   new mxConnectionConstraint(new mxPoint(0.5, 0), true),
	                                   new mxConnectionConstraint(new mxPoint(0.5, 1), true),
	                                   new mxConnectionConstraint(new mxPoint(1, 0.5), true)];
	mxHexagon.prototype.constraints = [new mxConnectionConstraint(new mxPoint(0.375, 0), true),
	                                    new mxConnectionConstraint(new mxPoint(0.5, 0), true),
	                                   new mxConnectionConstraint(new mxPoint(0.625, 0), true),
	                                   new mxConnectionConstraint(new mxPoint(0.125, 0.25), false),
	                                   new mxConnectionConstraint(new mxPoint(0, 0.5), true),
	                                   new mxConnectionConstraint(new mxPoint(0.125, 0.75), false),
	                                   new mxConnectionConstraint(new mxPoint(0.875, 0.25), false),
	                                   new mxConnectionConstraint(new mxPoint(0, 0.5), true),
	                                   new mxConnectionConstraint(new mxPoint(1, 0.5), true),
	                                   new mxConnectionConstraint(new mxPoint(0.875, 0.75), false),
	                                   new mxConnectionConstraint(new mxPoint(0.375, 1), true),
	                                    new mxConnectionConstraint(new mxPoint(0.5, 1), true),
	                                   new mxConnectionConstraint(new mxPoint(0.625, 1), true)];
	mxCloud.prototype.constraints = [new mxConnectionConstraint(new mxPoint(0.25, 0.25), false),
	                                 new mxConnectionConstraint(new mxPoint(0.4, 0.1), false),
	                                 new mxConnectionConstraint(new mxPoint(0.16, 0.55), false),
	                                 new mxConnectionConstraint(new mxPoint(0.07, 0.4), false),
	                                 new mxConnectionConstraint(new mxPoint(0.31, 0.8), false),
	                                 new mxConnectionConstraint(new mxPoint(0.13, 0.77), false),
	                                 new mxConnectionConstraint(new mxPoint(0.8, 0.8), false),
	                                 new mxConnectionConstraint(new mxPoint(0.55, 0.95), false),
	                                 new mxConnectionConstraint(new mxPoint(0.875, 0.5), false),
	                                 new mxConnectionConstraint(new mxPoint(0.96, 0.7), false),
	                                 new mxConnectionConstraint(new mxPoint(0.625, 0.2), false),
	                                 new mxConnectionConstraint(new mxPoint(0.88, 0.25), false)];
	mxArrow.prototype.constraints = null;
})();