Bug 63420 [R21PRES] Flash on tab switch
bundles/org.eclipse.ui.presentations.r21/src/org/eclipse/ui/internal/presentations/R21BasicStackPresentation.java
titleLabel.setImage(current.getTitleImage());
			titleLabel.setVisible(true);
		}
		Control currentToolbar = getCurrentToolbar();
		paneFolder.setTopCenter(currentToolbar);
		IPartMenu partMenu = getPartMenu();
		if (partMenu != null) {
			pullDownButton.setEnabled(true);
		} else {
			pullDownButton.setEnabled(false);
		}
		paneFolder.setTopRight(viewToolBar);
		viewToolBar.setVisible(true);
		paneFolder.layout(true);
		if (current != null) {
			Rectangle clientArea = paneFolder.getClientArea();
			Rectangle bounds = paneFolder.getControl().getBounds();
			clientArea.x += bounds.x;
			clientArea.y += bounds.y;
			current.setBounds(clientArea);
		}
	}
	/**
	 * Returns the IPartMenu for the currently selected part, or null if the
	 * current part does not have a menu.
	 * 
	 * @return the IPartMenu for the currently selected part or null if none
	 */
	protected IPartMenu getPartMenu() {
		IPresentablePart part = getCurrentPart();