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How can I add nodes with the CreateElementRequest [message #848723]

Wed, 18 April 2012 14:14

Marco Franke

Messages: 10
Registered: April 2012
Location: Bremen

Junior Member

Hello,

I have some EObjects and want to add them to the actual shown diagram ((DiagramEditor)k).getDiagramGraphicalViewer()). Unfortunately, I don't know how I can extend them to a Editpart and finally add them to the active diagramm.

I have already tried this one:

Action m = CTEFactoryImpl.eINSTANCE.createAction();
             		m.setName("kkkk");
             		CreateElementRequest kommschon = new CreateElementRequest(k.getEditingDomain(),m,ActivityElementTypes.Action_2001);
             		
             		CreateElementCommand createElementCommand = new CreateElementCommand(kommschon);

             		k.getDiagramEditDomain().getDiagramCommandStack().execute(new ICommandProxy(createElementCommand));

If I run this source code, I get now execption but nothing happens. I don't see any added figures to the diagramm
Can somebody tell me, what I have forgotten.

Best Regards,

Marco

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Re: How can I add nodes with the CreateElementRequest [message #853967 is a reply to message #848723]

Mon, 23 April 2012 14:15

Michael Golubev

Messages: 383
Registered: July 2009

Senior Member

Hello,

You should not create the CreateElementCommand directly, its just a helper for editpolicies that handles creation.
The good news is that the code that manipulates with CreateElementCommands is already in place, so you need only to find a way to delegate to policies.

If you want to follow what is done from the creation tools the code will look like:

List types = Collections.singletonList(ActivityElementTypes.Action_2001);
CreateUnspecifiedTypeRequest gefRequest = new CreateUnspecifiedTypeRequest(types, PreferencesHint.USE_DEFAULTS);
gefRequest.setLocation(...);
gefRequest.setSize(...);
EditPart containerEP = .... //find EP that should host the new element, DiagramEditPart for top-level elements.
Command gefCommand = containerEP.getCommand(gefRequest);
if (gefCommand.canExecute()) {
   //execute 
}

Hope that helps,
Regards,
Michael "Borlander" Golubev
at Montages Think Tank, Prague, Czech Republic
Montages AG, Zürich, Switzerland

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