java динамическое изменение иконки в дереве

java-Динамическое изменение иконки в дереве

[code:]java[:code]
import java.awt.Component;
import java.awt.event.MouseEvent;
import java.awt.event.MouseMotionAdapter;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.tree.DefaultTreeCellRenderer;
import javax.swing.tree.TreePath;

/**
 *
 * @author ezhov_da
 */
public class TestTreeNodeIcon
{
    private static final Logger LOG = Logger.getLogger(TestTreeNodeIcon.class.getName());
    private TreePath lastTreePath;

    public static void main(String[] args)
    {
        TestTreeNodeIcon testTreeNodeIcon = new TestTreeNodeIcon();
        testTreeNodeIcon.start();
    }

    private void start()
    {
        SwingUtilities.invokeLater(new Runnable()
        {
            @Override
            public void run()
            {
                try
                {
                    for (UIManager.LookAndFeelInfo info : UIManager.getInstalledLookAndFeels())
                    {
                        if ("Nimbus".equals(info.getName()))
                        {
                            UIManager.setLookAndFeel(info.getClassName());
                            break;
                        }
                    }
                } catch (Exception e)
                {
                    try
                    {
                        UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
                    } catch (Exception ex)
                    {
                        Logger.getLogger(TestTreeNodeIcon.class.getName()).log(Level.SEVERE, null, ex);
                    }
                }
                JFrame frame = new JFrame("_________");
                JTree tree = new JTree();
                tree.addMouseMotionListener(new MouseMotionAdapter()
                {
                    @Override
                    public void mouseMoved(MouseEvent e)
                    {
                        int r = tree.getClosestRowForLocation(e.getX(), e.getY());
                        TreePath treePath = tree.getClosestPathForLocation(e.getX(), e.getY());
                        System.out.println(treePath);
                        lastTreePath = treePath;
                        tree.repaint();
                    }
                });
                tree.setCellRenderer(new OwnRender());
                frame.add(new JScrollPane(tree));
                frame.setSize(600, 600);
                frame.setLocationRelativeTo(null);
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.setVisible(true);
            }
        });
    }

    class OwnRender extends DefaultTreeCellRenderer
    {

        @Override
        public Component getTreeCellRendererComponent(JTree tree, Object value, boolean sel, boolean expanded, boolean leaf, int row, boolean hasFocus)
        {
            JLabel label = (JLabel) super.getTreeCellRendererComponent(tree, value, sel, expanded, leaf, row, hasFocus);
            System.out.println("hasFocus? --> " + value + ":" + hasFocus);
            System.out.println("sel? --> " + value + ":" + sel);
            if (lastTreePath != null)
            {
                if (lastTreePath.getLastPathComponent() == value)
                {
                    label.setIcon(new ImageIcon(TestTreeNodeIcon.class.getResource("/ru/ezhov/test/src/add_filter_initiator_16x16.png")));
                }
            }
            return this;
        }

    }

}

[/code]