I just enabled connection labels on my diagram but in this instance the property that is displayed for the label is a derived value. So I would like to prevent the user from being able to double-click(F2) the label and perform an edit. In my case when a user tries to perform the edit it looks like a no-op in the UI but in the error log this exception is printed [1]. Is there a way to tell the diagram editor that a connection label should be made read-only? Or could it perhaps notice that a referenced property that renders the label is a @DerivedValue or I guess @ReadOnly would be the same scenario and simply disallow the double-click/(F2) editing gesture?
!ENTRY org.eclipse.graphiti.ui 4 0 2011-06-08 00:42:41.859
!MESSAGE GFCommandStack.execute(Command) java.lang.IllegalArgumentException: Cannot write property Label.
!STACK 0
java.lang.IllegalArgumentException: Cannot write property Label.
at org.eclipse.sapphire.modeling.ModelElement.write(ModelElement.java:408)
at com.liferay.ide.eclipse.service.core.model.internal.Relationship.write(Relationship.java:243)
at org.eclipse.sapphire.ui.diagram.editor.DiagramConnectionPart.setLabel(DiagramConnectionPart.java:230)
at org.eclipse.sapphire.ui.swt.graphiti.features.SapphireDirectEditConnectionFeature.setValue(SapphireDirectEditConnectionFeature.java:71)
at org.eclipse.graphiti.internal.command.DirectEditingFeatureCommandWithContext.execute(DirectEditingFeatureCommandWithContext.java:81)
at org.eclipse.graphiti.ui.internal.command.GefCommandWrapper.execute(GefCommandWrapper.java:51)
at org.eclipse.graphiti.ui.internal.editor.EmfOnGefCommand.execute(EmfOnGefCommand.java:59)
at org.eclipse.graphiti.internal.command.GFPreparableCommand2.doExecute(GFPreparableCommand2.java:37)
at org.eclipse.emf.transaction.RecordingCommand.execute(RecordingCommand.java:135)
at org.eclipse.emf.workspace.EMFCommandOperation.doExecute(EMFCommandOperation.java:119)
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