Blocking a drag operation

I have a bunch of tree nodes that I want to perform drag/drop on. I would like to prevent some of these tree nodes from being draggable. So, I need a way to grab the object attempting to be dragged and interrogate it to see if it's a draggable node.
I am using a TransferHandler, and a DropTargetAdapter.
How do i grab the object attempting to be dragged, and 'block' it from being dragged if I determine it is not a draggable node?

That's what I'm doing now, but it isn't the ideal
solution. I don't want the user to be able to drag
the object in the first place.A DropAdapter isn't going to help you here. You need something on the Drag side for that. I'm using either the DragGestureRecognizer or the DragSourceListener interface (can't remember which, the code's on my home computer). DragGestureRecognizer sounds more like it based on the documentation. Don't call startDrag() unless you're over a draggable component.

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Revision: 5713
Author: [email protected]
Date: 2009-03-28 16:31:33 -0700 (Sat, 28 Mar 2009)
Log Message:
User-submitted patch to fix DividedBox numDividers during divider drag operation
QE Notes: None
Doc Notes: None
Bugs: sdk-15199
Reviewer: alex
tests: checkintests, mustella/dividedBox
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