/**
	 * Hooks the GraphicalViewer to the rest of the Editor. By default, the
	 * viewer is added to the SelectionSynchronizer, which can be used to keep 2
	 * or more EditPartViewers in sync. The viewer is also registered as the
	 * ISelectionProvider for the Editor's PartSite.
	 */
	protected void hookGraphicalViewer() {
		getSelectionSynchronizer().addViewer(getGraphicalViewer());
		getSite().setSelectionProvider(getGraphicalViewer());
	}

	/**
	 * Creates the GraphicalViewer on the specified <code>Composite</code>.
	 * 
	 * @param parent
	 *            the parent composite
	 */
	protected void createGraphicalViewer(Composite parent) {
		GraphicalViewer viewer = new ScrollingGraphicalViewer();
		viewer.createControl(parent);
		setGraphicalViewer(viewer);
		configureGraphicalViewer();
		hookGraphicalViewer();
		initializeGraphicalViewer();
	}