Why isn't componentHidden called for my JPopupMenu?
- by heycam
I want to be notified when my JPopupMenu is hidden — whether because an item was selected, the menu was dismissed, or setVisible(false) was called on it. Here is my test code:
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class A extends ComponentAdapter implements Runnable, ActionListener {
private JButton b;
public static void main(String[] args) {
EventQueue.invokeLater(new A());
}
public void run() {
JFrame f = new JFrame("Test");
b = new JButton("Click me");
b.addActionListener(this);
f.add(b);
f.pack();
f.setVisible(true);
}
public void actionPerformed(ActionEvent e) {
JPopupMenu pm = new JPopupMenu();
pm.addComponentListener(this);
pm.add("Popup...");
pm.add("...menu!");
pm.show(b, 10, 10);
}
public void componentShown(ComponentEvent e) { System.out.println("componentShown"); }
public void componentHidden(ComponentEvent e) { System.out.println("componentHidden"); }
}
Regardless of how I interact with the menu, neither of the two ComponentListener methods are being called. Why is that? Is there different/better/correct way of finding out when my JPopupMenu is hidden?
Thanks,
Cameron
