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

[Arne <Erazerx@xxxxxx>]

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
> 
>