Bug 259179 [TabbedProperties] TabbedPropertySheetPage extensibility option
bundles/org.eclipse.ui.views.properties.tabbed/src/org/eclipse/ui/views/properties/tabbed/TabbedPropertySheetPage.java
overridableTabListContentProvider.overrideTabs();
		}
	}
	/**
	 * Get the widget factory.
	 * 
	 * @return the widget factory.
	 */
	public TabbedPropertySheetWidgetFactory getWidgetFactory() {
		return widgetFactory;
	}
	/**
	 * Update the title bar of the contributor has a label provider.
	 */
	private void refreshTitleBar() {
		if (hasTitleBar) {
			TabbedPropertyTitle title = tabbedPropertyComposite.getTitle();
			if (currentTab == null) {
				/**
				 * No tabs are shown so hide the title bar, otherwise you see
				 * "No properties available" and a title bar for the selection.
				 */
				title.setTitle(null, null);
			} else {
				String text = registry.getLabelProvider().getText(
					currentSelection);
				Image image = registry.getLabelProvider().getImage(
					currentSelection);
				title.setTitle(text, image);
			}