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how to make a node undeletable [message #150903]

Sun, 16 September 2007 11:29

Eclipse User

Originally posted by: fanshuchuan.163.com

Hi, is there anyone who knows how to make a node undeleteable?

Re: how to make a node undeletable [message #150913 is a reply to message #150903]

Mon, 17 September 2007 01:41

Eclipse User

Try this :-

inside the ItemSemanticEditPolicy of the editpart you wish to make
undeletable override the getDestroyElementCommand() method in th following
way

protected Command getDestroyElementCommand(DestroyElementRequest req) {

return UnexecutableCommand.INSTANCE;

}

this should work.

cheers,
-Arpit

Re: how to make a node undeletable [message #151102 is a reply to message #150913]

Mon, 17 September 2007 03:36

Eclipse User

Originally posted by: fanshuchuan.163.com

Arpit, thanks for your answer.
I tried the way you mentioned, and it works when i choose the "delete
from model" popup menu. but the node can still be removed when i press
"delete" shortcut key or choose the system menu "edit/delete".
so i wonder whether there is another way to solve the problem.

peter Fan

Re: how to make a node undeletable [message #151267 is a reply to message #151102]

Mon, 17 September 2007 06:35

Eclipse User

Originally posted by: jan.herriger.gmx.de

Install a ComponentEditPolicy like this:

installEditPolicy(EditPolicy.COMPONENT_ROLE,
new ComponentEditPolicy(){
protected Command getDeleteCommand(GroupRequest request) {
return null;
}
}
);

fan schrieb:
> Arpit, thanks for your answer.
> I tried the way you mentioned, and it works when i choose the "delete
> from model" popup menu. but the node can still be removed when i press
> "delete" shortcut key or choose the system menu "edit/delete".
> so i wonder whether there is another way to solve the problem.
>
> peter Fan
>

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