[news.eclipse.tools.gef] Re: drag and drop and ContainerEditPolicy ?

[Rune Molin <rune.molin@xxxxxx>]

Bump ?

> Hi all,
>
> I have a question on the way ContainerEditPolicy works. I have a view 
> which contains editparts for "resources" and for "reservations" (I'm 
> using abstract terms here, the actual domain is not relevant). I want to 
> drag reservations from one resource to another. My resource editparts 
> has a ContainerEditPolicy, and getOrphanChildrenCommand and 
> getAddCommand are called, so the dragging and dropping actually works.
>
> But I can't understand why orphan and add are called repeatedly when I 
> drag a reservation within the a new resource. Let's say I have some 
> lengthy background operation to perform when a reservation is dropped on 
> a new resource (that's probably a no-no). It would not do to invoke this 
> operation for every pixel the reservation is moved, would it ?
>
> Is there some way I can implement this add a slightly higher level, so I 
> only generate commands when the drag'n drop process is finished ?
>
> /Rune