Bug 18588 [Workbench] Hierarchy - no progress monitor ?
Build 20020601 Open type java.lang.Object, select Object type name in editor, and hit F4. No progress is shown during hierarchy opening.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/typehierarchy/TypeHierarchyViewPart.java
* @see IViewPart#init
	 */
	public void init(IViewSite site, IMemento memento) throws PartInitException {
		super.init(site, memento);
		fMemento= memento;
	}	
	
	/*
	 * @see ViewPart#saveState(IMemento)
	 */
	public void saveState(IMemento memento) {
		if (fPagebook == null) {
			
			if (fMemento != null) { 
				memento.putMemento(fMemento);
			}
			return;
		}
		if (fInputElement != null) {
			String handleIndentifier=  fInputElement.getHandleIdentifier();
			if (fInputElement instanceof IType) {
				ITypeHierarchy hierarchy= fHierarchyLifeCycle.getHierarchy();
				if (hierarchy != null && hierarchy.getSubtypes((IType) fInputElement).length > 1000) {
					
					handleIndentifier= null;
				}
			}
			memento.putString(TAG_INPUT, handleIndentifier);
		}		
		memento.putInteger(TAG_VIEW, getViewIndex());