JTree's getRowForLocation, how to get the scroll offset?

Question

I have noticed, that calling getRowForLocation from the mouse event, can give me some unexpected behavior when the scroll bars are visible. What's happening is that when I call getX() and getY() on the mouse handler, it's not offset into the scrollable area. So I end up with row 0, when in fact it's the top row visiable in the scroll pane, but not in the tree.
Any suggestions, pointers?

Answer 1

Use a selectionLister???import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.tree.*;
import javax.swing.event.*;
public class Test extends JFrame {
  JTree jt = new JTree();
  public Test() {
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    Container content = getContentPane();
    content.add(new JScrollPane(jt), BorderLayout.CENTER);
    jt.addTreeSelectionListener(new TreeSelectionListener() {
      public void valueChanged(TreeSelectionEvent tse) {
        TreePath tp = jt.getSelectionPath();
        if (tp!=null) System.out.println(tp.getLastPathComponent());
    setSize(100, 100);
    setVisible(true);
  public static void main(String[] args) { new Test(); }
}