@Override
    public Pair<Image, Point> createDraggedImage(DnDAction action, Point dragOrigin) {
      final TreePath[] paths = getSelectionPaths();
      if (paths == null) return null;

      final int count = paths.length;

      final JLabel label = new JLabel(String.format("%s item%s", count, count == 1 ? "" : "s"));
      label.setOpaque(true);
      label.setForeground(myTree.getForeground());
      label.setBackground(myTree.getBackground());
      label.setFont(myTree.getFont());
      label.setSize(label.getPreferredSize());
      final BufferedImage image =
          UIUtil.createImage(label.getWidth(), label.getHeight(), BufferedImage.TYPE_INT_ARGB);

      Graphics2D g2 = (Graphics2D) image.getGraphics();
      g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.7f));
      label.paint(g2);
      g2.dispose();

      return new Pair<Image, Point>(
          image, new Point(-image.getWidth(null), -image.getHeight(null)));
    }
 private Dimension computeWindowSize(Dimension size) {
   if (myAdComponent != null && myAdComponent.isShowing()) {
     size.height += myAdComponent.getPreferredSize().height + 1;
   }
   return size;
 }