Bug 63420 [R21PRES] Flash on tab switch
bundles/org.eclipse.ui.presentations.r21/src/org/eclipse/ui/internal/presentations/R21BasicStackPresentation.java
protected String getPaneName() {
		return R21PresentationMessages.getString("BasicStackPresentation.pane"); $NON-NLS-1$
	}
	/**
	 * Displays the view menu as a popup
	 */
	public void showPaneMenu() {
		IPartMenu menu = getPartMenu();
		if (menu != null) {
			Rectangle bounds = DragUtil.getDisplayBounds(viewToolBar);
			menu.showMenu(new Point(bounds.x, bounds.y + bounds.height));
		}
	}
	/**
	 * Returns the currently selected part, or <code>null</code>.
	 * 
	 * @return the currently selected part, or <code>null</code>
	 */
	protected IPresentablePart getCurrent() {
		return current;
	}
	/**
	 * Returns the index of the tab for the given part, or returns
	 * tabFolder.getItemCount() if there is no such tab.
	 * 
	 * @param part
	 *            part being searched for
	 * @return the index of the tab for the given part, or the number of tabs if
	 *         there is no such tab
	 */