public void uninstallUI(JComponent c) {
    HelpModel helpmodel = searchnav.getModel();

    searchnav.removeComponentListener(this);
    searchnav.removePropertyChangeListener(this);
    TreeSelectionModel tsm = tree.getSelectionModel();
    tsm.removeTreeSelectionListener(this);
    searchnav.setLayout(null);
    searchnav.removeAll();

    if (helpmodel != null) {
      helpmodel.removeHelpModelListener(this);
    }
    searchnav = null;
  }
    public static Image createImage(final JTree tree) {
      final TreeSelectionModel model = tree.getSelectionModel();
      final TreePath[] paths = model.getSelectionPaths();

      int count = 0;
      final List<ChangesBrowserNode> nodes = new ArrayList<ChangesBrowserNode>();
      for (final TreePath path : paths) {
        final ChangesBrowserNode node = (ChangesBrowserNode) path.getLastPathComponent();
        if (!node.isLeaf()) {
          nodes.add(node);
          count += node.getCount();
        }
      }

      for (TreePath path : paths) {
        final ChangesBrowserNode element = (ChangesBrowserNode) path.getLastPathComponent();
        boolean child = false;
        for (final ChangesBrowserNode node : nodes) {
          if (node.isNodeChild(element)) {
            child = true;
            break;
          }
        }

        if (!child) {
          if (element.isLeaf()) count++;
        } else if (!element.isLeaf()) {
          count -= element.getCount();
        }
      }

      final JLabel label = new JLabel(VcsBundle.message("changes.view.dnd.label", count));
      label.setOpaque(true);
      label.setForeground(tree.getForeground());
      label.setBackground(tree.getBackground());
      label.setFont(tree.getFont());
      label.setSize(label.getPreferredSize());
      final BufferedImage image =
          new BufferedImage(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 image;
    }
  public void installUI(JComponent c) {
    searchnav = (JHelpSearchNavigator) c;
    HelpModel helpmodel = searchnav.getModel();

    searchnav.setLayout(new BorderLayout());
    searchnav.addPropertyChangeListener(this);
    searchnav.addComponentListener(this);
    if (helpmodel != null) {
      helpmodel.addHelpModelListener(this);
    }

    JLabel search =
        new JLabel(HelpUtilities.getString(HelpUtilities.getLocale(c), "search.findLabel"));
    searchparams = new JTextField("", 20);
    search.setLabelFor(searchparams);
    searchparams.addActionListener(searchAction);

    JPanel box = new JPanel();
    box.setLayout(new BoxLayout(box, BoxLayout.X_AXIS));
    box.add(search);
    box.add(searchparams);

    searchnav.add("North", box);
    topNode = new DefaultMutableTreeNode();
    lastTOCnode = null;
    tree = new JTree(topNode);
    // public String convertValueToText(Object val
    TreeSelectionModel tsm = tree.getSelectionModel();
    tsm.addTreeSelectionListener(this);
    tree.setShowsRootHandles(false);
    tree.setRootVisible(false);
    sp = new JScrollPane();
    sp.getViewport().add(tree);
    searchnav.add("Center", sp);
    reloadData();
  }