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 clearMainToolBar(IToolBarManager tbmanager) {
		tbmanager.removeAll();
		tbmanager.update(false);		
	}	
	
	
	/**
	 * Creates the context menu for the hierarchy viewers
	 */
	private void fillTypesViewerContextMenu(TypeHierarchyViewer viewer, IMenuManager menu) {
		JavaPlugin.createStandardGroups(menu);
		
		menu.appendToGroup(IContextMenuConstants.GROUP_SHOW, new Separator(GROUP_FOCUS));
		
		viewer.contributeToContextMenu(menu);
		
		if (fFocusOnSelectionAction.canActionBeAdded())
			menu.appendToGroup(GROUP_FOCUS, fFocusOnSelectionAction);
		menu.appendToGroup(GROUP_FOCUS, fFocusOnTypeAction);
		fActionGroups.setContext(new ActionContext(getSite().getSelectionProvider().getSelection()));
		fActionGroups.fillContextMenu(menu);
		fActionGroups.setContext(null);
		
		
		
		
		
	}
	/**