Bug 191147 [CommonNavigator] Problem with selection causes view to fail to load
bundles/org.eclipse.ui.navigator/src/org/eclipse/ui/internal/navigator/CommonNavigatorManager.java
/**
	 * <p>
	 * Adds listeners to aNavigator to listen for selection changes and respond
	 * to mouse events.
	 * </p>
	 * 
	 * @param aNavigator
	 *            The CommonNavigator managed by this class. Requires a non-null
	 *            value.
	 */
	public CommonNavigatorManager(CommonNavigator aNavigator) {
		this(aNavigator, null);
	}
	
	/**
	 * <p>
	 * Adds listeners to aNavigator to listen for selection changes and respond
	 * to mouse events.
	 * </p>
	 * 
	 * @param aNavigator
	 *            The CommonNavigator managed by this class. Requires a non-null
	 *            value.
	 */
	public CommonNavigatorManager(CommonNavigator aNavigator, IMemento aMemento) {
		super();
		commonNavigator = aNavigator;
		contentService = commonNavigator.getNavigatorContentService();
		statusLineManager = commonNavigator.getViewSite().getActionBars()
				.getStatusLineManager();