Using PopupMenuListener : JPopupMenu « Swing « Java Tutorial
- Java Tutorial
- Swing
- JPopupMenu
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JMenuItem;
import javax.swing.JPopupMenu;
import javax.swing.event.PopupMenuEvent;
import javax.swing.event.PopupMenuListener;
// Define PopupMenuListener
class MyPopupMenuListener implements PopupMenuListener {
public void popupMenuCanceled(PopupMenuEvent popupMenuEvent) {
System.out.println("Canceled");
}
public void popupMenuWillBecomeInvisible(PopupMenuEvent popupMenuEvent) {
System.out.println("Becoming Invisible");
}
public void popupMenuWillBecomeVisible(PopupMenuEvent popupMenuEvent) {
System.out.println("Becoming Visible");
}
}
public class PopupMenuListenerDemo {
public static void main(final String args[]) {
JFrame frame = new JFrame("PopupSample Example");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// Create popup menu, attach popup menu listener
JPopupMenu popupMenu = new JPopupMenu("Title");
PopupMenuListener popupMenuListener = new MyPopupMenuListener();
popupMenu.addPopupMenuListener(popupMenuListener);
// Cut
JMenuItem cutMenuItem = new JMenuItem("Cut");
popupMenu.add(cutMenuItem);
// Copy
JMenuItem copyMenuItem = new JMenuItem("Copy");
popupMenu.add(copyMenuItem);
// Paste
JMenuItem pasteMenuItem = new JMenuItem("Paste");
pasteMenuItem.setEnabled(false);
popupMenu.add(pasteMenuItem);
// Separator
popupMenu.addSeparator();
// Find
JMenuItem findMenuItem = new JMenuItem("Find");
popupMenu.add(findMenuItem);
JButton label = new JButton();
frame.add(label);
label.setComponentPopupMenu(popupMenu);
frame.setSize(350, 250);
frame.setVisible(true);
}
}
