Bug 282875 [UI] Allow parts of models to be rendered
We need to change the rendering protocol to allow a 'createGui' to specify the container it should be created under (in SWT-land this would be a Composite). This is necessary to facilitate unit tests and to allow the ad-hoc rendering of chunks of a model within an arbitrary container (i.e. a Dialog or Wizard). In order to do this we'll have to make an API change to the PartFactory's 'createWidget' so that it will get the parent container as a parameter. In order to 'upgrade' an existing PartFactory you would simply replace the code you're currently using to find the correct container with the new parameter's value.
bundles/org.eclipse.e4.ui.workbench.renderers.swt/src/org/eclipse/e4/workbench/ui/renderers/swt/StackModelFactory.java
if (items[i].getData(OWNING_ME) == part)
				return items[i];
		}
		return null;
	}
	private void hookTabControllerLogic(final MPart<?> parentElement,
			final MPart<?> childElement, final CTabItem cti) {
		
		((EObject) childElement).eAdapters().add(new AdapterImpl() {
			@Override
			public void notifyChanged(Notification msg) {
				if (ApplicationPackage.Literals.MPART__VISIBLE.equals(msg
						.getFeature())) {
					MPart<?> changedPart = (MPart<?>) msg.getNotifier();
					if (changedPart.isVisible()) {
						childAdded(changedPart.getParent(), changedPart);
					} else {
						childRemoved(changedPart.getParent(), changedPart);
					}
				}
			}
		});
		
		IObservableValue textObs = EMFObservables
				.observeValue((EObject) childElement,
						ApplicationPackage.Literals.MITEM__NAME);
		ISWTObservableValue uiObs = SWTObservables.observeText(cti);
		dbc.bindValue(uiObs, textObs, null, null);
		
		IObservableValue emfTTipObs = EMFObservables.observeValue(