Automatic swimlane layout in mxgraph

Question

There is swimlane example in mxgraph but it is not automatic. So I took the graphlayout example as a basis instead and made few changes:

• Always use mxSwimlaneLayout
• Took swimlane cell style from the swimlanes example
• Created two swimlanes
• Used them as parents for the vertexes

Here's how I create swimlanes:

var lane1 = graph.insertVertex(parent, null, 'Lane 1', 0, 0, 1000, 100, 'swimlane');
var lane2 = graph.insertVertex(parent, null, 'Lane 2', 0, 100, 1000, 100, 'swimlane');
// use as parent...
var v1 = graph.insertVertex(lane1, null, 'A', 0, 0, w, h);

and execute the layout:

layout.orientation = mxConstants.DIRECTION_WEST;
layout.resizeParent = true;
layout.execute(parent, [lane1, lane2]);

Here's the test page.

Now, there are two problems here:

• Nodes are not being placed inside lanes; it seems that lanes are not respected at all. How do I make the layout to put nodes inside appropriate lanes? Setting lanes as parents seems to be not enough.
• I thought WEST would build graph to the left but it was the opposite... also NORTH goes down... why?

Answer 1

Far from perfect, but somehow improvement:

Demo

I've added:

layout.execute(lane1, [v1,v2,v3,v4]);
layout.execute(lane2, [v5,v6,v7,v8]);

and changed resizeParent to false, looks like lanes are respected but still don't look pleasant.