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Event Notification [message #756974]

Tue, 15 November 2011 19:31

Rui Domingues

Messages: 194
Registered: October 2010

Senior Member

Hi everyone,

I'd like to know if it is possible to listen to some change in diagram and cancel it,i.e., listen to an event when it is about to occur and then cancel it.

For example on adding some element to the diagram...

Thanks in advance.

Best Regards

[Updated on: Sat, 26 November 2011 12:03]

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Re: Event Notification [message #757040 is a reply to message #756974]

Wed, 16 November 2011 08:09

Ralph Gerbig

Messages: 702
Registered: November 2009

Senior Member

Hi,

you can override several methods of the generated editparts e.g. addNotify, handleNotificatione etc. You can also add listeners to your editparts. You should take a look at the package xxx.edit.parts. Of course you can also modify the generated commands and edit policies. Once you have found the right place to put your changes in you should think about using custom templates or GMF's extension points to place your code in. This way you do not loose code when deleting the generated and regenerate it again. This can sometime be quite handy.

Ralph

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