1. There is function to attach an node to another node - attachto, but I could not see any function down the line that would tell me what node my node was attached to. Something like 

Node.getNodeAttached() which would give back the node this node was attached to. Is there some way of finding this out?

2. Is there a way that the arrow routing could be done using a custom routing algorithm altogether? I can see that there are some ways that the internal routing algorithm can be tuned. But is there a way the whole algorithm be replaced if needed?

3. Flowchart mouse events can be handled - for example mouseClick, but the MouseEvent class gives back the mouse location in Pixels, but the Flowchart can have its MeasureUnit set to millimeters. So, point provided by the mouse event cannot be directly used by the application, for example
..
MouseEvent me
..
flowchart.getItemAt(new Point2D(me.getX(), me.getY())
without first converting the me.getX() and me.getY() to millimeters.

With lot of classes being built around the flowchart, with inheritance, containment and the works, it gets hard to track if everyone is religiously following the conversion before using it.

Or is there an easier way to solve this problem?

Thanks,
Praveena