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
}
			}		
			updateTitle();
					
			fDialogSettings.put(DIALOGSTORE_HIERARCHYVIEW, viewerIndex);
			getCurrentViewer().getTree().setFocus();
		}
		for (int i= 0; i < fViewActions.length; i++) {
			ToggleViewAction action= fViewActions[i];
			action.setChecked(fCurrentViewerIndex == action.getViewerIndex());
		}
	}
	/**
	 * Gets the curret active view index.
	 */		
	public int getViewIndex() {
		return fCurrentViewerIndex;
	}
	
	private TypeHierarchyViewer getCurrentViewer() {
		return fAllViewers[fCurrentViewerIndex];
	}
	/**
	 * called from EnableMemberFilterAction.
	 * Must be called after creation of the viewpart.
	 */	
	public void enableMemberFilter(boolean on) {
		if (on != fIsEnableMemberFilter) {
			fIsEnableMemberFilter= on;
			if (!on) {