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Get the ConnectionNodeEditPart from a CreateRelationshipRequest [message #703549]

Wed, 27 July 2011 17:20

Greg

Messages: 15
Registered: April 2011

Junior Member

I have a CreateRelationshipRequest which I got from the method getAfterCreateRelationshipCommand inside my own EditHelperAdvice class.

package mypackage.extend.helper.advice;

import org.eclipse.gmf.runtime.common.core.command.ICommand;
import org.eclipse.gmf.runtime.emf.type.core.edithelper.AbstractEditHelperAdvice;
import org.eclipse.gmf.runtime.emf.type.core.requests.DestroyReferenceRequest;

public class ExpressionEditHelperAdvice extends AbstractEditHelperAdvice
{
  @Override
  protected ICommand getAfterDestroyReferenceCommand(DestroyReferenceRequest request)
  {
  }

}

Is there a way to get to the ConnectionNodeEditPart that should get created with the command that triggers the getAfterCreateRelationshipCommand method?

I want to react to this command and change the value of one the labels depending on which anchor is used for the connection. I want to get the anchor instance from the ConnectionNodeEditPart.

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Re: Get the ConnectionNodeEditPart from a CreateRelationshipRequest [message #704044 is a reply to message #703549]

Thu, 28 July 2011 07:43

Mickael Istria

Messages: 865
Registered: July 2009
Location: Grenoble, France

Senior Member

I think there is a getNewObject method either on the CreateRequest or on
the CreateCommand, which provides you an adapter that you can use to
resolve to the created item...

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Re: Get the ConnectionNodeEditPart from a CreateRelationshipRequest [message #708878 is a reply to message #704044]

Wed, 03 August 2011 08:50

Greg

Messages: 15
Registered: April 2011

Junior Member

At this point I do have a CreateRelationshipRequest which is used to get a CreateRelationshipCommand.

Both have the method getNewElement() which always seems to return null.

The EditHelperAdvice is of the package org.eclipse.gmf.runtime.emf.type.core.edithelper which makes me believe that it will only return events on the model base. The anchors are part of the EditPart and therefore in the controller of GMF. This assumption is supported b the fact that from the CreateRelationshipRequest and the CreateRelationshipCommand (using getSource() and getTarget()) I only seem to get Impls and never EditParts.

So I'm getting to a point where I think it simply isn't possible to get the resulting ConnectionEditPart with the EditHelperAdvice.

Am I wrong or does anyone know a similar approach to this on a pure GMF level?

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