Bug 294303 [Markers] 'Queuing Viewer Updates' in Problems view
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/views/markers/ExtendedMarkersView.java
IContentProvider contentProvider = viewer.getContentProvider();
		Markers clone = createViewerInputClone();
		if (clone == null) {
			clone = builder.getMarkers().getClone();
		}
		contentProvider.inputChanged(viewer, getViewerInput(), clone);
		builder.start();
	}
	/**
	 * 
	 */
	private void addPageAndPartSelectionListener() {
		
		pageSelectionListener = new ViewerPageSelectionListener(this);
		getSite().getPage().addPostSelectionListener(pageSelectionListener);
		partListener = getPartListener();
		getSite().getPage().addPartListener(partListener);
		pageSelectionListener.selectionChanged(getSite().getPage()
				.getActivePart(), getSite().getPage().getSelection());
	}
	/**
	 * 
	 */
	private void addSelectionListener() {
		viewer.addSelectionChangedListener(new ISelectionChangedListener() {
			public void selectionChanged(SelectionChangedEvent event) {
				ISelection selection = event.getSelection();
				if (selection instanceof IStructuredSelection){
					updateStatusLine((IStructuredSelection)selection);
				}