I'm trying to figure out which node my mouse cursor is over when my
DragSourceListener gets a DragSourceDragEvent.  I can get the location from
the event, but how do I translate that coordinate into one I can use in
JTree's getPathForLocation method?

I've searched past usenet articles, but I appear not to know the magic words
to use.  I'm not finding anything that tells me how to do this.  Surely, I
don't have to get all the individual offsets myself and add them up!