[news.eclipse.modeling.gmf] Re: Undo / Redo for whole Commandstack

[Javier Cardenete <j.cardenete@xxxxxxxxxx>]

Hello Alex & Arne!

Arne, I've had the same problem but I'm stuck at that point.
Could you give me a hint on how to solve this problem and where to look 
at in the code to fix the issue of the UndoContext?

Thanks!



> Hello Alex,
>
> thank you very much! I really was doing it wrong with the IUndoContext.
> You helped me a lot.
>
> Arne
>
> Alex Shatalin schrieb:
> > Hello Arne,
> >
> > All the commands in GMF (EMF-based or GEF-based) are executed through
> > eclipse command stack now. I think the problem is in incorrect âundo
> > contextâ used by some commands in your editor or Undo/redo actions. In
> > general each IUndoableOperation can have several IUndoContext attached,
> > so there should be a code attaching proper UndoContext to each command
> > executed through GEF/EMF. I do not remember then appropriate context
> > will be attached to each command executed in GMF-generated editor (this
> > code is not so simple and spread around the GMF) but I know there is
> > such place(s) in code and I think you can try finding that by debugging.
> > AFAIR I was able to implement multipage editor with EMF/GMF pages and
> > common undo/redo stack and an idea was: attach appropriate undo context
> > to each executed command and then use this context in undo/redo actions.
> >
> > -----------------
> > Alex Shatalin