Drop controller

[yousse...@gmail.com]

Hello;
I'am trying to use dnd with gwtGannt.

I have many small widget that should be draged and droped on the same
panel (a very big one). but widget should keep their Y position while
moving.

I tried, Inside onMove, to use DragContext variables to set
Dragable.desiredX but i can get it working.

Thanks in advance.