The desire is to have a panel listens to mouse actions. Upon double click, show additional buttons for user to choose, similar to the right click context menu. Also, it would be awesome if user can drag and drop panel objects. (use to identify associations of the content inside the panels. Not really dragging and dropping a panel into another panel.)
Or, can it support right click context menu?
The panel itself does not listen to mouse events, not even itemclickevent. I see that the layout can listen to generic events. What should I do here?
This is not implemented in Vaadin 6.1 but the upcoming Vaadin 6.2 contains clickable panels, layouts and more. Try the 6.2.0.pre1 version and see for yourself.
Drag’n’drop is not currently supported but is planned for Vaadin 6.3, which should be out some time in the spring.
It is not supported by Panel. It should be possible to extend Panel though and add this functionality if you need it (Tree actions might serve as an example)