Bug 63420 [R21PRES] Flash on tab switch
bundles/org.eclipse.ui.presentations.r21/src/org/eclipse/ui/internal/presentations/R21BasicStackPresentation.java
* @see org.eclipse.ui.presentations.StackPresentation#showSystemMenu()
	 */
	public void showSystemMenu() {
		IPresentablePart part = getCurrentPart();
		if (part != null) {
			Rectangle bounds = DragUtil.getDisplayBounds(paneFolder
					.getControl());
			int idx = paneFolder.getSelectionIndex();
			if (idx > -1) {
				CTabItem item = paneFolder.getItem(idx);
				Rectangle itemBounds = item.getBounds();
				bounds.x += itemBounds.x;
				bounds.y += itemBounds.y;
			}
			Point location = new Point(bounds.x, bounds.y
					+ paneFolder.getTabHeight());
			showSystemMenu(location);
		}
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.presentations.StackPresentation#getTabList(IPresentablePart)
	 */
	public Control[] getTabList(IPresentablePart part) {
		ArrayList list = new ArrayList();
		if (paneFolder.getTabPosition() == SWT.BOTTOM) {
			if (part.getToolBar() != null)
				list.add(part.getToolBar());
			if (part.getControl() != null)