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Avoiding Delete From Model/Delete from Diagram completely? [message #536941]

Mon, 31 May 2010 15:24

Giovanni De Sossi

Messages: 161
Registered: October 2009
Location: Rome, Italy

Senior Member

Hi all,

I've implemented a custom GMF editor, in which I need to completely avoid deletion of figures (both from model and from diagram); I modified the default DeleteElementAction, adding a return UnexecutableCommand.INSTANCE; statement: it works (the items in popup menu are disabled), but I'm not able to avoid deletion by keyboard (DEL/BACKSPACE keystrokes).

Anyone has idea about that?

Thank you all

Regards,
Giovanni.

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Re: Avoiding Delete From Model/Delete from Diagram completely? [message #537042 is a reply to message #536941]

Tue, 01 June 2010 07:14

Sven Krause

Messages: 119
Registered: July 2009

Senior Member

Hi Giovanni,

I used the shouldProceed(DestroyRequest) method at the
SemanticEditPolicy and the createDeleteViewCommand(GroupRequest) at teh
ComponentEditPolicy preventing element deletion. But therefore I've used
custom templates extending the standard policies for all my affected
edit parts.

Sven

Am 31.05.2010 17:24, schrieb Giovanni:
> Hi all,
>
> I've implemented a custom GMF editor, in which I need to completely
> avoid deletion of figures (both from model and from diagram); I modified
> the default DeleteElementAction, adding a return
> UnexecutableCommand.INSTANCE; statement: it works (the items in popup
> menu are disabled), but I'm not able to avoid deletion by keyboard
> (DEL/BACKSPACE keystrokes).
>
> Anyone has idea about that?
>
> Thank you all
>
> Regards,
> Giovanni.

Report message to a moderator