Drag and Drop support beetween Vaadin Portlets


First I want to say: Great work! Vaadin looks pretty impressive!

I want to use Vaadin in Liferay and I was just wondering if drag and drop is supported over Portlets?
e.g. I want to drag a table item (row) from one portlet to another.

I have tried it already with two simple portlets each containing a table.
I set a DropHandler on each table but when I’m running into the drop method it looks like the source component is the same as the target component. Further the item id of TableTransferable is null.

Any Ideas?

cheers bernie