Bug 113104 [hovering] Consider adapting AbstractInformationControl to new PopupDialog
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/typehierarchy/HierarchyInformationControl.java
});	
		fLabelProvider.setTextFlags(JavaElementLabels.ALL_DEFAULT | JavaElementLabels.T_POST_QUALIFIED);
		fLabelProvider.addLabelDecorator(new ProblemsLabelDecorator(null));
		treeViewer.setLabelProvider(fLabelProvider);
		
		treeViewer.getTree().addKeyListener(getKeyAdapter());	
		
		return treeViewer;
	}
	
	protected boolean hasFocusMethod(IType type) {
		if (fFocus == null) {
			return true;
		}
		if (type.equals(fFocus.getDeclaringType())) {
			return true;
		}
		
		try {
			IMethod method= findMethod(fFocus, type);
			if (method != null) {
				
				IPackageFragment pack= (IPackageFragment) fFocus.getAncestor(IJavaElement.PACKAGE_FRAGMENT);
				if (JavaModelUtil.isVisibleInHierarchy(method, pack)) {
					return true;
				}
			}
		} catch (JavaModelException e) {
			
			JavaPlugin.log(e);