[news.eclipse.tools.gef] DND

[Greg <greg.gigon@xxxxxxxxxx>]

Hello.
I was trying to add DND support to my editor, and I can't do it.
In my navigator viewer I added this line:

        this.viewer.addDragSupport(DND.DROP_COPY, new Transfer[]
        { ElementTransfer.getInstance() }, new 
ElementDragSourceListener(this.viewer));

It adds support for dragin.
ElementTransfer is a simple class that extends ByteArrayTransfer() and 
don't do too much. ElementDragSourceListener is a extension of 
DragSourceAdapter class.

It has method dragSetData() that sets event.data to my dragged object.

Now DROP SUPPORT.

In my EDITOR CLASS:

 protected void initializeGraphicalViewer()
        {
        ...
        _graphicalViewer.addDropTargetListener(new 
DiagramDropTargetListener(_graphicalViewer));
	...
        }

and:

public class DiagramDropTargetListener implements 
TransferDropTargetListener{...}
// org.eclipse.jface.util.TransferDropTargetListener;

Method drop(DropTargetEvent event) is the one that should finaly drop 
dragged object. Unfortunatelly event.data = null.
When i did simple DEBUG it turns that dragSetData() is called at the 
very end, after drop() is called.

Now I'm really confused. Can someone please tell me how to implement 
this functionality? I'm trying for too long without any results.

Simple example, some clue, whatever will be nice, I'm desperate :)

Am I going good directions by the way?

Cheers, Greg