bug4417601.java

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/* @test
   @bug 4417601
   @summary JMenus with no items paint a tiny menu.
   @author Alexander Potochkin
   @library ../../../../lib/testlibrary
   @build ExtendedRobot
   @run main bug4417601
*/

import javax.swing.*;
import java.awt.event.*;
import java.awt.*;

public class bug4417601 {
    static JMenu menu;
    static volatile boolean flag;

    public static void main(String[] args) throws Exception {

        ExtendedRobot robot = new ExtendedRobot();
        robot.setAutoDelay(10);

        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                JFrame frame = new JFrame();
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                menu = new JMenu("Menu");
                JMenuBar bar = new JMenuBar();
                bar.add(menu);
                frame.setJMenuBar(bar);

                frame.getLayeredPane().addContainerListener(new ContainerAdapter() {
                    public void componentAdded(ContainerEvent e) {
                        flag = true;
                    }
                });

                frame.pack();
                frame.setSize(200, 200);
                frame.setLocationRelativeTo(null);
                frame.setVisible(true);
            }
        });
        robot.waitForIdle();
        Point p = menu.getLocationOnScreen();
        Dimension size = menu.getSize();
        p.x += size.width / 2;
        p.y += size.height / 2;
        robot.mouseMove(p.x, p.y);
        robot.mousePress(InputEvent.BUTTON1_MASK);
        robot.mouseRelease(InputEvent.BUTTON1_MASK);
        robot.waitForIdle();
        if (flag) {
            throw new RuntimeException("Empty popup was shown");
        }
    }
}