Bug 157445 [JFace] PopupDialog does not allow direct selection of text in editor
bundles/org.eclipse.jface/src/org/eclipse/jface/dialogs/PopupDialog.java
toolBar.addMouseListener(new MouseAdapter() {
			public void mouseDown(MouseEvent e) {
				showDialogMenu();
			}
		});
	}
	/**
	 * Fill the dialog's menu. Subclasses may extend or override.
	 * 
	 * @param dialogMenu
	 *            The dialog's menu.
	 */
	protected void fillDialogMenu(IMenuManager dialogMenu) {
		dialogMenu.add(new GroupMarker("SystemMenuStart")); 
		dialogMenu.add(new MoveAction());
		dialogMenu.add(new ResizeAction());
		if (showPersistAction) {
			dialogMenu.add(new PersistBoundsAction());
		}
		dialogMenu.add(new Separator("SystemMenuEnd")); 
	}
	/**
	 * Perform the requested tracker action (resize or move).
	 * 
	 * @param style
	 *            The track style (resize or move).
	 */
	private void performTrackerAction(int style) {
		Shell shell = getShell();
		if (shell == null || shell.isDisposed()) {