public JComboTree(TreeModel model,
    Window owner) 
{
		super();
		tree_model = model;
		buildTextField();
		buildTree();
		packageTree(owner);
}

 protected final  void buildTextField() 
{
		setEditable(false);
		addMouseListener(new MouseAdapter() {
			public void mouseClicked(MouseEvent e) {
				clickedTextField();
			}
		});
}

 protected final  void buildTree() 
{
		tree = new JTree(tree_model);
		tree.setEditable(false);
		tree.getSelectionModel().setSelectionMode(
				TreeSelectionModel.SINGLE_TREE_SELECTION);
		expandAllRows();
		class TSL implements TreeSelectionListener {
			public void valueChanged(TreeSelectionEvent e) {
				if (e.isAddedPath()) {
					clickedTreeElement();
				}
			}
		}
		tree.addTreeSelectionListener(new TSL());
}

 protected final  void clickedTextField() 
{
		window.setLocation(getLocation());
		window.setSize(new Dimension(350, tree.getRowHeight() * 21));
		window.setVisible(true);
		// window.toFront();
}

 protected final  void clickedTreeElement() 
{
		selected_path = tree.getSelectionPath();
		setText(selected_path);
		window.setVisible(false);
}

 protected final  void expandAllRows() 
{
		int max = tree.getRowCount();
		for (int idx = max - 1; idx  >= 0; idx --) {
			tree.expandRow(idx);
		}
}

 public final TreeNode getSelectedNode() 
{
		return (TreeNode)selected_path.getLastPathComponent();
}

 public final TreePath getSelectedPath() 
{
			return selected_path;
}

 public  void nullify() 
{
		tree = null;
		tree_model = null;
		window = null;
}

 protected final  void packageTree(Window owner) 
{
		window = new JWindow(owner);
		window.getContentPane().add(new JScrollPane(tree));
}

 public final  void setSelectedPath(TreePath path) 
{
		tree.setSelectionPath(path);
		selected_path = path;
		setText(path);
}

 protected final  void setText(TreePath path) 
{
		final String value = ((TreeNode)(path.getLastPathComponent())).
							toString();
		Runnable doit = new Runnable() {
			public void run() {
				setText(value);
			}
		};
		javax.swing.SwingUtilities.invokeLater(doit);
}