Bug 16897 No busy indicator while populating type hierarchy
Build: Freeze 1 In a self-hosting workspace, select the type IAdaptable in an editor and hit F4 to populate the type hiearchy. Since this interface has many sub-types, this takes several seconds to populate. There should be a busy indicator while this is happening.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/typehierarchy/TypeHierarchyViewPart.java
}
	}
	
	private void revealElementInEditor(Object elem, Viewer originViewer) {
		
		
		if (getSite().getPage().getActivePart() != this) {
			return;
		}
		
		if (fSelectionProviderMediator.getViewerInFocus() != originViewer) {
			return;
		}
		
		IEditorPart editorPart= EditorUtility.isOpenInEditor(elem);
		if (editorPart != null && (elem instanceof IJavaElement)) {
			try {
				getSite().getPage().removePartListener(fPartListener);
				EditorUtility.openInEditor(elem, false);
				EditorUtility.revealInEditor(editorPart, (IJavaElement) elem);
				getSite().getPage().addPartListener(fPartListener);
			} catch (CoreException e) {
				JavaPlugin.log(e);
			}
		}
	}
	
	private Display getDisplay() {
		if (fPagebook != null && !fPagebook.isDisposed()) {
			return fPagebook.getDisplay();