Revert last two commits - Keyboard shortcuts are not working

1 files changed, 1302 insertions, 0 deletions

diff --git a/src/js/view/mxEdgeStyle.js b/src/js/view/mxEdgeStyle.js
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+/**
+ * $Id: mxEdgeStyle.js,v 1.68 2012-11-20 09:06:07 gaudenz Exp $
+ * Copyright (c) 2006-2010, JGraph Ltd
+ */
+var mxEdgeStyle =
+{
+	/**
+	 * Class: mxEdgeStyle
+	 * 
+	 * Provides various edge styles to be used as the values for
+	 * <mxConstants.STYLE_EDGE> in a cell style.
+	 *
+	 * Example:
+	 * 
+	 * (code)
+	 * var style = stylesheet.getDefaultEdgeStyle();
+	 * style[mxConstants.STYLE_EDGE] = mxEdgeStyle.ElbowConnector;
+	 * (end)
+	 * 
+	 * Sets the default edge style to <ElbowConnector>.
+	 * 
+	 * Custom edge style:
+	 * 
+	 * To write a custom edge style, a function must be added to the mxEdgeStyle
+	 * object as follows:
+	 * 
+	 * (code)
+	 * mxEdgeStyle.MyStyle = function(state, source, target, points, result)
+	 * {
+	 *   if (source != null && target != null)
+	 *   {
+	 *     var pt = new mxPoint(target.getCenterX(), source.getCenterY());
+	 * 
+	 *     if (mxUtils.contains(source, pt.x, pt.y))
+	 *     {
+	 *       pt.y = source.y + source.height;
+	 *     }
+	 * 
+	 *     result.push(pt);
+	 *   }
+	 * };
+	 * (end)
+	 * 
+	 * In the above example, a right angle is created using a point on the
+	 * horizontal center of the target vertex and the vertical center of the source
+	 * vertex. The code checks if that point intersects the source vertex and makes
+	 * the edge straight if it does. The point is then added into the result array,
+	 * which acts as the return value of the function.
+	 *
+	 * The new edge style should then be registered in the <mxStyleRegistry> as follows:
+	 * (code)
+	 * mxStyleRegistry.putValue('myEdgeStyle', mxEdgeStyle.MyStyle);
+	 * (end)
+	 * 
+	 * The custom edge style above can now be used in a specific edge as follows:
+	 * 
+	 * (code)
+	 * model.setStyle(edge, 'edgeStyle=myEdgeStyle');
+	 * (end)
+	 * 
+	 * Note that the key of the <mxStyleRegistry> entry for the function should
+	 * be used in string values, unless <mxGraphView.allowEval> is true, in
+	 * which case you can also use mxEdgeStyle.MyStyle for the value in the
+	 * cell style above.
+	 * 
+	 * Or it can be used for all edges in the graph as follows:
+	 * 
+	 * (code)
+	 * var style = graph.getStylesheet().getDefaultEdgeStyle();
+	 * style[mxConstants.STYLE_EDGE] = mxEdgeStyle.MyStyle;
+	 * (end)
+	 * 
+	 * Note that the object can be used directly when programmatically setting
+	 * the value, but the key in the <mxStyleRegistry> should be used when
+	 * setting the value via a key, value pair in a cell style.
+	 * 
+	 * Function: EntityRelation
+	 * 
+	 * Implements an entity relation style for edges (as used in database
+	 * schema diagrams). At the time the function is called, the result
+	 * array contains a placeholder (null) for the first absolute point,
+	 * that is, the point where the edge and source terminal are connected.
+	 * The implementation of the style then adds all intermediate waypoints
+	 * except for the last point, that is, the connection point between the
+	 * edge and the target terminal. The first ant the last point in the
+	 * result array are then replaced with mxPoints that take into account
+	 * the terminal's perimeter and next point on the edge.
+	 *
+	 * Parameters:
+	 * 
+	 * state - <mxCellState> that represents the edge to be updated.
+	 * source - <mxCellState> that represents the source terminal.
+	 * target - <mxCellState> that represents the target terminal.
+	 * points - List of relative control points.
+	 * result - Array of <mxPoints> that represent the actual points of the
+	 * edge.
+	 */
+	 EntityRelation: function (state, source, target, points, result)
+	 {
+		var view = state.view;
+	 	var graph = view.graph;
+	 	var segment = mxUtils.getValue(state.style,
+	 			mxConstants.STYLE_SEGMENT,
+	 			mxConstants.ENTITY_SEGMENT) * view.scale;
+	 	
+		var pts = state.absolutePoints;
+		var p0 = pts[0];
+		var pe = pts[pts.length-1];
+
+	 	var isSourceLeft = false;
+
+		if (p0 != null)
+		{
+			source = new mxCellState();
+			source.x = p0.x;
+			source.y = p0.y;
+		}
+		else if (source != null)
+		{
+			var constraint = mxUtils.getPortConstraints(source, state, true, mxConstants.DIRECTION_MASK_NONE);
+			
+			if (constraint != mxConstants.DIRECTION_MASK_NONE)
+			{
+				isSourceLeft = constraint == mxConstants.DIRECTION_MASK_WEST;
+			}
+			else
+			{
+			 	var sourceGeometry = graph.getCellGeometry(source.cell);
+		
+			 	if (sourceGeometry.relative)
+			 	{
+			 		isSourceLeft = sourceGeometry.x <= 0.5;
+			 	}
+			 	else if (target != null)
+			 	{
+			 		isSourceLeft = target.x + target.width < source.x;
+			 	}
+			}
+		}
+		else
+		{
+			return;
+		}
+	 	
+	 	var isTargetLeft = true;
+
+		if (pe != null)
+		{
+			target = new mxCellState();
+			target.x = pe.x;
+			target.y = pe.y;
+		}
+		else if (target != null)
+	 	{
+			var constraint = mxUtils.getPortConstraints(target, state, false, mxConstants.DIRECTION_MASK_NONE);
+			
+			if (constraint != mxConstants.DIRECTION_MASK_NONE)
+			{
+				isTargetLeft = constraint == mxConstants.DIRECTION_MASK_WEST;
+			}
+			else
+			{
+			 	var targetGeometry = graph.getCellGeometry(target.cell);
+	
+			 	if (targetGeometry.relative)
+			 	{
+			 		isTargetLeft = targetGeometry.x <= 0.5;
+			 	}
+			 	else if (source != null)
+			 	{
+			 		isTargetLeft = source.x + source.width < target.x;
+			 	}
+			}
+	 	}
+		
+		if (source != null && target != null)
+		{
+			var x0 = (isSourceLeft) ? source.x : source.x + source.width;
+			var y0 = view.getRoutingCenterY(source);
+			
+			var xe = (isTargetLeft) ? target.x : target.x + target.width;
+			var ye = view.getRoutingCenterY(target);
+	
+			var seg = segment;
+	
+			var dx = (isSourceLeft) ? -seg : seg;
+			var dep = new mxPoint(x0 + dx, y0);
+					
+			dx = (isTargetLeft) ? -seg : seg;
+			var arr = new mxPoint(xe + dx, ye);
+	
+			// Adds intermediate points if both go out on same side
+			if (isSourceLeft == isTargetLeft)
+			{
+				var x = (isSourceLeft) ?
+					Math.min(x0, xe)-segment :
+					Math.max(x0, xe)+segment;
+	
+				result.push(new mxPoint(x, y0));
+				result.push(new mxPoint(x, ye));
+			}
+			else if ((dep.x < arr.x) == isSourceLeft)
+			{
+				var midY = y0 + (ye - y0) / 2;
+	
+				result.push(dep);
+				result.push(new mxPoint(dep.x, midY));
+				result.push(new mxPoint(arr.x, midY));
+				result.push(arr);
+			}
+			else
+			{
+				result.push(dep);
+				result.push(arr);
+			}
+		}
+	 },
+
+	 /**
+	 * Function: Loop
+	 * 
+	 * Implements a self-reference, aka. loop.
+	 */
+	Loop: function (state, source, target, points, result)
+	{
+		if (source != null)
+		{
+			var view = state.view;
+			var graph = view.graph;
+			var pt = (points != null && points.length > 0) ? points[0] : null;
+
+			if (pt != null)
+			{
+				pt = view.transformControlPoint(state, pt);
+					
+				if (mxUtils.contains(source, pt.x, pt.y))
+				{
+					pt = null;
+				}
+			}
+			
+			var x = 0;
+			var dx = 0;
+			var y = 0;
+			var dy = 0;
+			
+		 	var seg = mxUtils.getValue(state.style, mxConstants.STYLE_SEGMENT,
+		 		graph.gridSize) * view.scale;
+			var dir = mxUtils.getValue(state.style, mxConstants.STYLE_DIRECTION,
+				mxConstants.DIRECTION_WEST);
+			
+			if (dir == mxConstants.DIRECTION_NORTH ||
+				dir == mxConstants.DIRECTION_SOUTH)
+			{
+				x = view.getRoutingCenterX(source);
+				dx = seg;
+			}
+			else
+			{
+				y = view.getRoutingCenterY(source);
+				dy = seg;
+			}
+			
+			if (pt == null ||
+				pt.x < source.x ||
+				pt.x > source.x + source.width)
+			{
+				if (pt != null)
+				{
+					x = pt.x;
+					dy = Math.max(Math.abs(y - pt.y), dy);
+				}
+				else
+				{
+					if (dir == mxConstants.DIRECTION_NORTH)
+					{
+						y = source.y - 2 * dx;
+					}
+					else if (dir == mxConstants.DIRECTION_SOUTH)
+					{
+						y = source.y + source.height + 2 * dx;
+					}
+					else if (dir == mxConstants.DIRECTION_EAST)
+					{
+						x = source.x - 2 * dy;
+					}
+					else
+					{
+						x = source.x + source.width + 2 * dy;
+					}
+				}
+			}
+			else if (pt != null)
+			{
+				x = view.getRoutingCenterX(source);
+				dx = Math.max(Math.abs(x - pt.x), dy);
+				y = pt.y;
+				dy = 0;
+			}
+			
+			result.push(new mxPoint(x - dx, y - dy));
+			result.push(new mxPoint(x + dx, y + dy));
+		}
+	},
+	
+	/**
+	 * Function: ElbowConnector
+	 * 
+	 * Uses either <SideToSide> or <TopToBottom> depending on the horizontal
+	 * flag in the cell style. <SideToSide> is used if horizontal is true or
+	 * unspecified. See <EntityRelation> for a description of the
+	 * parameters.
+	 */
+	ElbowConnector: function (state, source, target, points, result)
+	{
+		var pt = (points != null && points.length > 0) ? points[0] : null;
+
+		var vertical = false;
+		var horizontal = false;
+		
+		if (source != null && target != null)
+		{
+			if (pt != null)
+			{
+				var left = Math.min(source.x, target.x);
+				var right = Math.max(source.x + source.width,
+					target.x + target.width);
+	
+				var top = Math.min(source.y, target.y);
+				var bottom = Math.max(source.y + source.height,
+					target.y + target.height);
+
+				pt = state.view.transformControlPoint(state, pt);
+					
+				vertical = pt.y < top || pt.y > bottom;
+				horizontal = pt.x < left || pt.x > right;
+			}
+			else
+			{
+				var left = Math.max(source.x, target.x);
+				var right = Math.min(source.x + source.width,
+					target.x + target.width);
+					
+				vertical = left == right;
+				
+				if (!vertical)
+				{
+					var top = Math.max(source.y, target.y);
+					var bottom = Math.min(source.y + source.height,
+						target.y + target.height);
+						
+					horizontal = top == bottom;
+				}
+			}
+		}
+
+		if (!horizontal && (vertical ||
+			state.style[mxConstants.STYLE_ELBOW] == mxConstants.ELBOW_VERTICAL))
+		{
+			mxEdgeStyle.TopToBottom(state, source, target, points, result);
+		}
+		else
+		{
+			mxEdgeStyle.SideToSide(state, source, target, points, result);
+		}
+	},
+
+	/**
+	 * Function: SideToSide
+	 * 
+	 * Implements a vertical elbow edge. See <EntityRelation> for a description
+	 * of the parameters.
+	 */
+	SideToSide: function (state, source, target, points, result)
+	{
+		var view = state.view;
+		var pt = (points != null && points.length > 0) ? points[0] : null;
+		var pts = state.absolutePoints;
+		var p0 = pts[0];
+		var pe = pts[pts.length-1];
+		
+		if (pt != null)
+		{
+			pt = view.transformControlPoint(state, pt);
+		}
+		
+		if (p0 != null)
+		{
+			source = new mxCellState();
+			source.x = p0.x;
+			source.y = p0.y;
+		}
+		
+		if (pe != null)
+		{
+			target = new mxCellState();
+			target.x = pe.x;
+			target.y = pe.y;
+		}
+		
+		if (source != null && target != null)
+		{
+			var l = Math.max(source.x, target.x);
+			var r = Math.min(source.x + source.width,
+							 target.x + target.width);
+	
+			var x = (pt != null) ? pt.x : r + (l - r) / 2;
+	
+			var y1 = view.getRoutingCenterY(source);
+			var y2 = view.getRoutingCenterY(target);
+	
+			if (pt != null)
+			{
+				if (pt.y >= source.y && pt.y <= source.y + source.height)
+				{
+					y1 = pt.y;
+				}
+				
+				if (pt.y >= target.y && pt.y <= target.y + target.height)
+				{
+					y2 = pt.y;
+				}
+			}
+			
+			if (!mxUtils.contains(target, x, y1) &&
+				!mxUtils.contains(source, x, y1))
+			{
+				result.push(new mxPoint(x,  y1));
+			}
+	
+			if (!mxUtils.contains(target, x, y2) &&
+				!mxUtils.contains(source, x, y2))
+			{
+				result.push(new mxPoint(x, y2));
+			}
+	
+			if (result.length == 1)
+			{
+				if (pt != null)
+				{
+					if (!mxUtils.contains(target, x, pt.y) &&
+						!mxUtils.contains(source, x, pt.y))
+					{
+						result.push(new mxPoint(x, pt.y));
+					}
+				}
+				else
+				{	
+					var t = Math.max(source.y, target.y);
+					var b = Math.min(source.y + source.height,
+							 target.y + target.height);
+						 
+					result.push(new mxPoint(x, t + (b - t) / 2));
+				}
+			}
+		}
+	},
+
+	/**
+	 * Function: TopToBottom
+	 * 
+	 * Implements a horizontal elbow edge. See <EntityRelation> for a
+	 * description of the parameters.
+	 */
+	TopToBottom: function(state, source, target, points, result)
+	{
+		var view = state.view;
+		var pt = (points != null && points.length > 0) ? points[0] : null;
+		var pts = state.absolutePoints;
+		var p0 = pts[0];
+		var pe = pts[pts.length-1];
+		
+		if (pt != null)
+		{
+			pt = view.transformControlPoint(state, pt);
+		}
+		
+		if (p0 != null)
+		{
+			source = new mxCellState();
+			source.x = p0.x;
+			source.y = p0.y;
+		}
+		
+		if (pe != null)
+		{
+			target = new mxCellState();
+			target.x = pe.x;
+			target.y = pe.y;
+		}
+
+		if (source != null && target != null)
+		{
+			var t = Math.max(source.y, target.y);
+			var b = Math.min(source.y + source.height,
+							 target.y + target.height);
+	
+			var x = view.getRoutingCenterX(source);
+			
+			if (pt != null &&
+				pt.x >= source.x &&
+				pt.x <= source.x + source.width)
+			{
+				x = pt.x;
+			}
+			
+			var y = (pt != null) ? pt.y : b + (t - b) / 2;
+			
+			if (!mxUtils.contains(target, x, y) &&
+				!mxUtils.contains(source, x, y))
+			{
+				result.push(new mxPoint(x, y));						
+			}
+			
+			if (pt != null &&
+				pt.x >= target.x &&
+				pt.x <= target.x + target.width)
+			{
+				x = pt.x;
+			}
+			else
+			{
+				x = view.getRoutingCenterX(target);
+			}
+			
+			if (!mxUtils.contains(target, x, y) &&
+				!mxUtils.contains(source, x, y))
+			{
+				result.push(new mxPoint(x, y));						
+			}
+			
+			if (result.length == 1)
+			{
+				if (pt != null && result.length == 1)
+				{
+					if (!mxUtils.contains(target, pt.x, y) &&
+						!mxUtils.contains(source, pt.x, y))
+					{
+						result.push(new mxPoint(pt.x, y));
+					}
+				}
+				else
+				{
+					var l = Math.max(source.x, target.x);
+					var r = Math.min(source.x + source.width,
+							 target.x + target.width);
+						 
+					result.push(new mxPoint(l + (r - l) / 2, y));
+				}
+			}
+		}
+	},
+
+	/**
+	 * Function: SegmentConnector
+	 * 
+	 * Implements an orthogonal edge style. Use <mxEdgeSegmentHandler>
+	 * as an interactive handler for this style.
+	 */
+	SegmentConnector: function(state, source, target, hints, result)
+	{
+		// Creates array of all way- and terminalpoints
+		var pts = state.absolutePoints;
+		var horizontal = true;
+		var hint = null;
+		
+		// Adds the first point
+		var pt = pts[0];
+		
+		if (pt == null && source != null)
+		{
+			pt = new mxPoint(state.view.getRoutingCenterX(source), state.view.getRoutingCenterY(source));
+		}
+		else if (pt != null)
+		{
+			pt = pt.clone();
+		}
+
+		var lastInx = pts.length - 1;
+		
+		// Adds the waypoints
+		if (hints != null && hints.length > 0)
+		{
+			hint = state.view.transformControlPoint(state, hints[0]);
+
+			var currentTerm = source;
+			var currentPt = pts[0];
+			var hozChan = false;
+			var vertChan = false;
+			var currentHint = hint;
+			var hintsLen = hints.length;
+			
+			for (var i = 0; i < 2; i++)
+			{
+				var fixedVertAlign = currentPt != null && currentPt.x == currentHint.x;
+				var fixedHozAlign = currentPt != null && currentPt.y == currentHint.y;
+				var inHozChan = currentTerm != null && (currentHint.y >= currentTerm.y &&
+						currentHint.y <= currentTerm.y + currentTerm.height);
+				var inVertChan = currentTerm != null && (currentHint.x >= currentTerm.x &&
+						currentHint.x <= currentTerm.x + currentTerm.width);
+				
+				hozChan = fixedHozAlign || (currentPt == null && inHozChan);
+				vertChan = fixedVertAlign ||	(currentPt == null && inVertChan);
+				
+				if (currentPt != null && (!fixedHozAlign && !fixedVertAlign) && (inHozChan || inVertChan)) 
+				{
+					horizontal = inHozChan ? false : true;
+					break;
+				}
+		
+				if (vertChan || hozChan)
+				{
+					horizontal = hozChan;
+					
+					if (i == 1)
+					{
+						// Work back from target end
+						horizontal = hints.length % 2 == 0 ? hozChan : vertChan;
+					}
+
+					break;
+				}
+				
+				currentTerm = target;
+				currentPt = pts[lastInx];
+				currentHint = state.view.transformControlPoint(state, hints[hintsLen - 1]);
+			}
+
+			if (horizontal && ((pts[0] != null && pts[0].y != hint.y) ||
+				(pts[0] == null && source != null &&
+				(hint.y < source.y || hint.y > source.y + source.height))))
+			{
+				result.push(new mxPoint(pt.x, hint.y));
+			}
+			else if (!horizontal && ((pts[0] != null && pts[0].x != hint.x) ||
+					(pts[0] == null && source != null &&
+					(hint.x < source.x || hint.x > source.x + source.width))))
+			{
+				result.push(new mxPoint(hint.x, pt.y));
+			}
+			
+			if (horizontal)
+			{
+				pt.y = hint.y;
+			}
+			else
+			{
+				pt.x = hint.x;
+			}
+		
+			for (var i = 0; i < hints.length; i++)
+			{
+				horizontal = !horizontal;
+				hint = state.view.transformControlPoint(state, hints[i]);
+		
+//				mxLog.show();
+//				mxLog.debug('hint', i, hint.x, hint.y);
+				
+				if (horizontal)
+				{
+					pt.y = hint.y;
+				}
+				else
+				{
+					pt.x = hint.x;
+				}
+		
+				result.push(pt.clone());
+			}
+		}
+		else
+		{
+			hint = pt;
+			// FIXME: First click in connect preview toggles orientation
+			horizontal = true;
+		}
+
+		// Adds the last point
+		pt = pts[lastInx];
+
+		if (pt == null && target != null)
+		{
+			pt = new mxPoint(state.view.getRoutingCenterX(target), state.view.getRoutingCenterY(target));
+		}
+
+		if (horizontal && ((pts[lastInx] != null && pts[lastInx].y != hint.y) ||
+			(pts[lastInx] == null && target != null &&
+			(hint.y < target.y || hint.y > target.y + target.height))))
+		{
+			result.push(new mxPoint(pt.x, hint.y));
+		}
+		else if (!horizontal && ((pts[lastInx] != null && pts[lastInx].x != hint.x) ||
+				(pts[lastInx] == null && target != null &&
+				(hint.x < target.x || hint.x > target.x + target.width))))
+		{
+			result.push(new mxPoint(hint.x, pt.y));
+		}
+		
+		// Removes bends inside the source terminal for floating ports
+		if (pts[0] == null && source != null)
+		{
+			while (result.length > 1 && mxUtils.contains(source, result[1].x, result[1].y))
+			{
+				result = result.splice(1, 1);
+			}
+		}
+		
+		// Removes bends inside the target terminal
+		if (pts[lastInx] == null && target != null)
+		{
+			while (result.length > 1 && mxUtils.contains(target, result[result.length - 1].x, result[result.length - 1].y))
+			{
+				result = result.splice(result.length - 1, 1);
+			}
+		}
+		
+	},
+	
+	orthBuffer: 10,
+
+	dirVectors: [ [ -1, 0 ],
+			[ 0, -1 ], [ 1, 0 ], [ 0, 1 ], [ -1, 0 ], [ 0, -1 ], [ 1, 0 ] ],
+
+	wayPoints1: [ [ 0, 0], [ 0, 0],  [ 0, 0], [ 0, 0], [ 0, 0],  [ 0, 0],
+	              [ 0, 0],  [ 0, 0], [ 0, 0],  [ 0, 0], [ 0, 0],  [ 0, 0] ],
+
+	routePatterns: [
+		[ [ 513, 2308, 2081, 2562 ], [ 513, 1090, 514, 2184, 2114, 2561 ],
+			[ 513, 1090, 514, 2564, 2184, 2562 ],
+			[ 513, 2308, 2561, 1090, 514, 2568, 2308 ] ],
+	[ [ 514, 1057, 513, 2308, 2081, 2562 ], [ 514, 2184, 2114, 2561 ],
+			[ 514, 2184, 2562, 1057, 513, 2564, 2184 ],
+			[ 514, 1057, 513, 2568, 2308, 2561 ] ],
+	[ [ 1090, 514, 1057, 513, 2308, 2081, 2562 ], [ 2114, 2561 ],
+			[ 1090, 2562, 1057, 513, 2564, 2184 ],
+			[ 1090, 514, 1057, 513, 2308, 2561, 2568 ] ],
+	[ [ 2081, 2562 ], [ 1057, 513, 1090, 514, 2184, 2114, 2561 ],
+			[ 1057, 513, 1090, 514, 2184, 2562, 2564 ],
+			[ 1057, 2561, 1090, 514, 2568, 2308 ] ] ],
+	
+	inlineRoutePatterns: [
+			[ null, [ 2114, 2568 ], null, null ],
+			[ null, [ 514, 2081, 2114, 2568 ] , null, null ],
+			[ null, [ 2114, 2561 ], null, null ],
+			[ [ 2081, 2562 ], [ 1057, 2114, 2568 ],
+					[ 2184, 2562 ],
+					null ] ],
+	vertexSeperations: [],
+
+	limits: [
+	       [ 0, 0, 0, 0, 0, 0, 0, 0, 0 ],
+	       [ 0, 0, 0, 0, 0, 0, 0, 0, 0 ] ],
+
+	LEFT_MASK: 32,
+
+	TOP_MASK: 64,
+
+	RIGHT_MASK: 128,
+
+	BOTTOM_MASK: 256,
+
+	LEFT: 1,
+
+	TOP: 2,
+
+	RIGHT: 4,
+
+	BOTTOM: 8,
+
+	// TODO remove magic numbers
+	SIDE_MASK: 480,
+	//mxEdgeStyle.LEFT_MASK | mxEdgeStyle.TOP_MASK | mxEdgeStyle.RIGHT_MASK
+	//| mxEdgeStyle.BOTTOM_MASK,
+
+	CENTER_MASK: 512,
+
+	SOURCE_MASK: 1024,
+
+	TARGET_MASK: 2048,
+
+	VERTEX_MASK: 3072,
+	// mxEdgeStyle.SOURCE_MASK | mxEdgeStyle.TARGET_MASK,
+
+	/**
+	 * Function: OrthConnector
+	 * 
+	 * Implements a local orthogonal router between the given
+	 * cells.
+	 */
+	OrthConnector: function(state, source, target, points, result)
+	{
+		var graph = state.view.graph;
+		var sourceEdge = source == null ? false : graph.getModel().isEdge(source.cell);
+		var targetEdge = target == null ? false : graph.getModel().isEdge(target.cell);
+
+		if ((points != null && points.length > 0) || (sourceEdge) || (targetEdge))
+		{
+			mxEdgeStyle.SegmentConnector(state, source, target, points, result);
+			return;
+		}
+
+		var pts = state.absolutePoints;
+		var p0 = pts[0];
+		var pe = pts[pts.length-1];
+
+		var sourceX = source != null ? source.x : p0.x;
+		var sourceY = source != null ? source.y : p0.y;
+		var sourceWidth = source != null ? source.width : 1;
+		var sourceHeight = source != null ? source.height : 1;
+		
+		var targetX = target != null ? target.x : pe.x;
+		var targetY = target != null ? target.y : pe.y;
+		var targetWidth = target != null ? target.width : 1;
+		var targetHeight = target != null ? target.height : 1;
+		
+		var scaledOrthBuffer = state.view.scale * mxEdgeStyle.orthBuffer;
+		// Determine the side(s) of the source and target vertices
+		// that the edge may connect to
+		// portConstraint [source, target]
+		var portConstraint = [mxConstants.DIRECTION_MASK_ALL, mxConstants.DIRECTION_MASK_ALL];
+		
+		if (source != null)
+		{
+			portConstraint[0] = mxUtils.getPortConstraints(source, state, true, 
+					mxConstants.DIRECTION_MASK_ALL);
+		}
+		
+		if (target != null)
+		{
+			portConstraint[1] = mxUtils.getPortConstraints(target, state, false,
+				mxConstants.DIRECTION_MASK_ALL);
+		}
+										
+		var dir = [0, 0] ;
+
+		// Work out which faces of the vertices present against each other
+		// in a way that would allow a 3-segment connection if port constraints
+		// permitted.
+		// geo -> [source, target] [x, y, width, height]
+		var geo = [ [sourceX, sourceY, sourceWidth, sourceHeight] ,
+		            [targetX, targetY, targetWidth, targetHeight] ];
+
+		for (var i = 0; i < 2; i++)
+		{
+			mxEdgeStyle.limits[i][1] = geo[i][0] - scaledOrthBuffer;
+			mxEdgeStyle.limits[i][2] = geo[i][1] - scaledOrthBuffer;
+			mxEdgeStyle.limits[i][4] = geo[i][0] + geo[i][2] + scaledOrthBuffer;
+			mxEdgeStyle.limits[i][8] = geo[i][1] + geo[i][3] + scaledOrthBuffer;
+		}
+		
+		// Work out which quad the target is in
+		var sourceCenX = geo[0][0] + geo[0][2] / 2.0;
+		var sourceCenY = geo[0][1] + geo[0][3] / 2.0;
+		var targetCenX = geo[1][0] + geo[1][2] / 2.0;
+		var targetCenY = geo[1][1] + geo[1][3] / 2.0;
+		
+		var dx = sourceCenX - targetCenX;
+		var dy = sourceCenY - targetCenY;
+
+		var quad = 0;
+
+		if (dx < 0)
+		{
+			if (dy < 0)
+			{
+				quad = 2;
+			}
+			else
+			{
+				quad = 1;
+			}
+		}
+		else
+		{
+			if (dy <= 0)
+			{
+				quad = 3;
+				
+				// Special case on x = 0 and negative y
+				if (dx == 0)
+				{
+					quad = 2;
+				}
+			}
+		}
+
+		// Check for connection constraints
+		var currentTerm = null;
+		
+		if (source != null)
+		{
+			currentTerm = p0;
+		}
+
+		var constraint = [ [0.5, 0.5] , [0.5, 0.5] ];
+
+		for (var i = 0; i < 2; i++)
+		{
+			if (currentTerm != null)
+			{
+				constraint[i][0] = (currentTerm.x - geo[i][0]) / geo[i][2];
+
+				if (constraint[i][0] < 0.01)
+				{
+					dir[i] = mxConstants.DIRECTION_MASK_WEST;
+				}
+				else if (constraint[i][0] > 0.99)
+				{
+					dir[i] = mxConstants.DIRECTION_MASK_EAST;
+				}
+
+				constraint[i][1] = (currentTerm.y - geo[i][1]) / geo[i][3];
+
+				if (constraint[i][1] < 0.01)
+				{
+					dir[i] = mxConstants.DIRECTION_MASK_NORTH;
+				}
+				else if (constraint[i][1] > 0.99)
+				{
+					dir[i] = mxConstants.DIRECTION_MASK_SOUTH;
+				}
+			}
+
+			currentTerm = null;
+			
+			if (target != null)
+			{
+				currentTerm = pe;
+			}
+		}
+
+		var sourceTopDist = geo[0][1] - (geo[1][1] + geo[1][3]);
+		var sourceLeftDist = geo[0][0] - (geo[1][0] + geo[1][2]);
+		var sourceBottomDist = geo[1][1] - (geo[0][1] + geo[0][3]);
+		var sourceRightDist = geo[1][0] - (geo[0][0] + geo[0][2]);
+
+		mxEdgeStyle.vertexSeperations[1] = Math.max(
+				sourceLeftDist - 2 * scaledOrthBuffer, 0);
+		mxEdgeStyle.vertexSeperations[2] = Math.max(sourceTopDist - 2 * scaledOrthBuffer,
+				0);
+		mxEdgeStyle.vertexSeperations[4] = Math.max(sourceBottomDist - 2
+				* scaledOrthBuffer, 0);
+		mxEdgeStyle.vertexSeperations[3] = Math.max(sourceRightDist - 2
+				* scaledOrthBuffer, 0);
+				
+		//==============================================================
+		// Start of source and target direction determination
+
+		// Work through the preferred orientations by relative positioning
+		// of the vertices and list them in preferred and available order
+		
+		var dirPref = [];
+		var horPref = [];
+		var vertPref = [];
+
+		horPref[0] = (sourceLeftDist >= sourceRightDist) ? mxConstants.DIRECTION_MASK_WEST
+				: mxConstants.DIRECTION_MASK_EAST;
+		vertPref[0] = (sourceTopDist >= sourceBottomDist) ? mxConstants.DIRECTION_MASK_NORTH
+				: mxConstants.DIRECTION_MASK_SOUTH;
+
+		horPref[1] = mxUtils.reversePortConstraints(horPref[0]);
+		vertPref[1] = mxUtils.reversePortConstraints(vertPref[0]);
+		
+		var preferredHorizDist = sourceLeftDist >= sourceRightDist ? sourceLeftDist
+				: sourceRightDist;
+		var preferredVertDist = sourceTopDist >= sourceBottomDist ? sourceTopDist
+				: sourceBottomDist;
+
+		var prefOrdering = [ [0, 0] , [0, 0] ];
+		var preferredOrderSet = false;
+
+		// If the preferred port isn't available, switch it
+		for (var i = 0; i < 2; i++)
+		{
+			if (dir[i] != 0x0)
+			{
+				continue;
+			}
+
+			if ((horPref[i] & portConstraint[i]) == 0)
+			{
+				horPref[i] = mxUtils.reversePortConstraints(horPref[i]);
+			}
+
+			if ((vertPref[i] & portConstraint[i]) == 0)
+			{
+				vertPref[i] = mxUtils
+						.reversePortConstraints(vertPref[i]);
+			}
+
+			prefOrdering[i][0] = vertPref[i];
+			prefOrdering[i][1] = horPref[i];
+		}
+
+		if (preferredVertDist > scaledOrthBuffer * 2
+				&& preferredHorizDist > scaledOrthBuffer * 2)
+		{
+			// Possibility of two segment edge connection
+			if (((horPref[0] & portConstraint[0]) > 0)
+					&& ((vertPref[1] & portConstraint[1]) > 0))
+			{
+				prefOrdering[0][0] = horPref[0];
+				prefOrdering[0][1] = vertPref[0];
+				prefOrdering[1][0] = vertPref[1];
+				prefOrdering[1][1] = horPref[1];
+				preferredOrderSet = true;
+			}
+			else if (((vertPref[0] & portConstraint[0]) > 0)
+					&& ((horPref[1] & portConstraint[1]) > 0))
+			{
+				prefOrdering[0][0] = vertPref[0];
+				prefOrdering[0][1] = horPref[0];
+				prefOrdering[1][0] = horPref[1];
+				prefOrdering[1][1] = vertPref[1];
+				preferredOrderSet = true;
+			}
+		}
+		if (preferredVertDist > scaledOrthBuffer * 2 && !preferredOrderSet)
+		{
+			prefOrdering[0][0] = vertPref[0];
+			prefOrdering[0][1] = horPref[0];
+			prefOrdering[1][0] = vertPref[1];
+			prefOrdering[1][1] = horPref[1];
+			preferredOrderSet = true;
+
+		}
+		if (preferredHorizDist > scaledOrthBuffer * 2 && !preferredOrderSet)
+		{
+			prefOrdering[0][0] = horPref[0];
+			prefOrdering[0][1] = vertPref[0];
+			prefOrdering[1][0] = horPref[1];
+			prefOrdering[1][1] = vertPref[1];
+			preferredOrderSet = true;
+		}
+
+		// The source and target prefs are now an ordered list of
+		// the preferred port selections
+		// It the list can contain gaps, compact it
+
+		for (var i = 0; i < 2; i++)
+		{
+			if (dir[i] != 0x0)
+			{
+				continue;
+			}
+
+			if ((prefOrdering[i][0] & portConstraint[i]) == 0)
+			{
+				prefOrdering[i][0] = prefOrdering[i][1];
+			}
+
+			dirPref[i] = prefOrdering[i][0] & portConstraint[i];
+			dirPref[i] |= (prefOrdering[i][1] & portConstraint[i]) << 8;
+			dirPref[i] |= (prefOrdering[1 - i][i] & portConstraint[i]) << 16;
+			dirPref[i] |= (prefOrdering[1 - i][1 - i] & portConstraint[i]) << 24;
+
+			if ((dirPref[i] & 0xF) == 0)
+			{
+				dirPref[i] = dirPref[i] << 8;
+			}
+			if ((dirPref[i] & 0xF00) == 0)
+			{
+				dirPref[i] = (dirPref[i] & 0xF) | dirPref[i] >> 8;
+			}
+			if ((dirPref[i] & 0xF0000) == 0)
+			{
+				dirPref[i] = (dirPref[i] & 0xFFFF)
+						| ((dirPref[i] & 0xF000000) >> 8);
+			}
+
+			dir[i] = dirPref[i] & 0xF;
+
+			if (portConstraint[i] == mxConstants.DIRECTION_MASK_WEST
+					|| portConstraint[i] == mxConstants.DIRECTION_MASK_NORTH
+					|| portConstraint[i] == mxConstants.DIRECTION_MASK_EAST
+					|| portConstraint[i] == mxConstants.DIRECTION_MASK_SOUTH)
+			{
+				dir[i] = portConstraint[i];
+			}
+		}
+
+		//==============================================================
+		// End of source and target direction determination
+
+		var sourceIndex = dir[0] == mxConstants.DIRECTION_MASK_EAST ? 3
+				: dir[0];
+		var targetIndex = dir[1] == mxConstants.DIRECTION_MASK_EAST ? 3
+				: dir[1];
+
+		sourceIndex -= quad;
+		targetIndex -= quad;
+
+		if (sourceIndex < 1)
+		{
+			sourceIndex += 4;
+		}
+		if (targetIndex < 1)
+		{
+			targetIndex += 4;
+		}
+
+		var routePattern = mxEdgeStyle.routePatterns[sourceIndex - 1][targetIndex - 1];
+
+		mxEdgeStyle.wayPoints1[0][0] = geo[0][0];
+		mxEdgeStyle.wayPoints1[0][1] = geo[0][1];
+
+		switch (dir[0])
+		{
+			case mxConstants.DIRECTION_MASK_WEST:
+				mxEdgeStyle.wayPoints1[0][0] -= scaledOrthBuffer;
+				mxEdgeStyle.wayPoints1[0][1] += constraint[0][1] * geo[0][3];
+				break;
+			case mxConstants.DIRECTION_MASK_SOUTH:
+				mxEdgeStyle.wayPoints1[0][0] += constraint[0][0] * geo[0][2];
+				mxEdgeStyle.wayPoints1[0][1] += geo[0][3] + scaledOrthBuffer;
+				break;
+			case mxConstants.DIRECTION_MASK_EAST:
+				mxEdgeStyle.wayPoints1[0][0] += geo[0][2] + scaledOrthBuffer;
+				mxEdgeStyle.wayPoints1[0][1] += constraint[0][1] * geo[0][3];
+				break;
+			case mxConstants.DIRECTION_MASK_NORTH:
+				mxEdgeStyle.wayPoints1[0][0] += constraint[0][0] * geo[0][2];
+				mxEdgeStyle.wayPoints1[0][1] -= scaledOrthBuffer;
+				break;
+		}
+
+		var currentIndex = 0;
+
+		// Orientation, 0 horizontal, 1 vertical
+		var lastOrientation = (dir[0] & (mxConstants.DIRECTION_MASK_EAST | mxConstants.DIRECTION_MASK_WEST)) > 0 ? 0
+				: 1;
+		var initialOrientation = lastOrientation;
+		var currentOrientation = 0;
+
+		for (var i = 0; i < routePattern.length; i++)
+		{
+			var nextDirection = routePattern[i] & 0xF;
+
+			// Rotate the index of this direction by the quad
+			// to get the real direction
+			var directionIndex = nextDirection == mxConstants.DIRECTION_MASK_EAST ? 3
+					: nextDirection;
+
+			directionIndex += quad;
+
+			if (directionIndex > 4)
+			{
+				directionIndex -= 4;
+			}
+
+			var direction = mxEdgeStyle.dirVectors[directionIndex - 1];
+
+			currentOrientation = (directionIndex % 2 > 0) ? 0 : 1;
+			// Only update the current index if the point moved
+			// in the direction of the current segment move,
+			// otherwise the same point is moved until there is 
+			// a segment direction change
+			if (currentOrientation != lastOrientation)
+			{
+				currentIndex++;
+				// Copy the previous way point into the new one
+				// We can't base the new position on index - 1
+				// because sometime elbows turn out not to exist,
+				// then we'd have to rewind.
+				mxEdgeStyle.wayPoints1[currentIndex][0] = mxEdgeStyle.wayPoints1[currentIndex - 1][0];
+				mxEdgeStyle.wayPoints1[currentIndex][1] = mxEdgeStyle.wayPoints1[currentIndex - 1][1];
+			}
+
+			var tar = (routePattern[i] & mxEdgeStyle.TARGET_MASK) > 0;
+			var sou = (routePattern[i] & mxEdgeStyle.SOURCE_MASK) > 0;
+			var side = (routePattern[i] & mxEdgeStyle.SIDE_MASK) >> 5;
+			side = side << quad;
+
+			if (side > 0xF)
+			{
+				side = side >> 4;
+			}
+
+			var center = (routePattern[i] & mxEdgeStyle.CENTER_MASK) > 0;
+
+			if ((sou || tar) && side < 9)
+			{
+				var limit = 0;
+				var souTar = sou ? 0 : 1;
+
+				if (center && currentOrientation == 0)
+				{
+					limit = geo[souTar][0] + constraint[souTar][0] * geo[souTar][2];
+				}
+				else if (center)
+				{
+					limit = geo[souTar][1] + constraint[souTar][1] * geo[souTar][3];
+				}
+				else
+				{
+					limit = mxEdgeStyle.limits[souTar][side];
+				}
+				
+				if (currentOrientation == 0)
+				{
+					var lastX = mxEdgeStyle.wayPoints1[currentIndex][0];
+					var deltaX = (limit - lastX) * direction[0];
+
+					if (deltaX > 0)
+					{
+						mxEdgeStyle.wayPoints1[currentIndex][0] += direction[0]
+								* deltaX;
+					}
+				}
+				else
+				{
+					var lastY = mxEdgeStyle.wayPoints1[currentIndex][1];
+					var deltaY = (limit - lastY) * direction[1];
+
+					if (deltaY > 0)
+					{
+						mxEdgeStyle.wayPoints1[currentIndex][1] += direction[1]
+								* deltaY;
+					}
+				}
+			}
+
+			else if (center)
+			{
+				// Which center we're travelling to depend on the current direction
+				mxEdgeStyle.wayPoints1[currentIndex][0] += direction[0]
+						* Math.abs(mxEdgeStyle.vertexSeperations[directionIndex] / 2);
+				mxEdgeStyle.wayPoints1[currentIndex][1] += direction[1]
+						* Math.abs(mxEdgeStyle.vertexSeperations[directionIndex] / 2);
+			}
+
+			if (currentIndex > 0
+					&& mxEdgeStyle.wayPoints1[currentIndex][currentOrientation] == mxEdgeStyle.wayPoints1[currentIndex - 1][currentOrientation])
+			{
+				currentIndex--;
+			}
+			else
+			{
+				lastOrientation = currentOrientation;
+			}
+		}
+
+		for (var i = 0; i <= currentIndex; i++)
+		{
+			if (i == currentIndex)
+			{
+				// Last point can cause last segment to be in
+				// same direction as jetty/approach. If so,
+				// check the number of points is consistent
+				// with the relative orientation of source and target
+				// jettys. Same orientation requires an even
+				// number of turns (points), different requires
+				// odd.
+				var targetOrientation = (dir[1] & (mxConstants.DIRECTION_MASK_EAST | mxConstants.DIRECTION_MASK_WEST)) > 0 ? 0
+						: 1;
+				var sameOrient = targetOrientation == initialOrientation ? 0 : 1;
+
+				// (currentIndex + 1) % 2 is 0 for even number of points,
+				// 1 for odd
+				if (sameOrient != (currentIndex + 1) % 2)
+				{
+					// The last point isn't required
+					break;
+				}
+			}
+			
+			result.push(new mxPoint(mxEdgeStyle.wayPoints1[i][0], mxEdgeStyle.wayPoints1[i][1]));
+		}
+	},
+	
+	getRoutePattern: function(dir, quad, dx, dy)
+	{
+		var sourceIndex = dir[0] == mxConstants.DIRECTION_MASK_EAST ? 3
+				: dir[0];
+		var targetIndex = dir[1] == mxConstants.DIRECTION_MASK_EAST ? 3
+				: dir[1];
+
+		sourceIndex -= quad;
+		targetIndex -= quad;
+
+		if (sourceIndex < 1)
+		{
+			sourceIndex += 4;
+		}
+		if (targetIndex < 1)
+		{
+			targetIndex += 4;
+		}
+
+		var result = routePatterns[sourceIndex - 1][targetIndex - 1];
+
+		if (dx == 0 || dy == 0)
+		{
+			if (inlineRoutePatterns[sourceIndex - 1][targetIndex - 1] != null)
+			{
+				result = inlineRoutePatterns[sourceIndex - 1][targetIndex - 1];
+			}
+		}
+
+		return result;
+	}
+};
\ No newline at end of file