Swim Lane resize - keep the resize adornment in view


I’m using the swimlanes example for my diagram. Is there a way to keep the resize adornment in the view when I resize the diagram horizontally?

The actual behaviour

Expected result


I think you can override ResizingTool.doMouseMove to also call


Then when the user holds the mouse just inside the edge of the viewport, the diagram will auto-scroll.

We do not support autoscrolling outside of the viewport (or DIV) because such an action might be interpreted as a drag-and-drop operation. Although in your case that would not make sense.