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 * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 */

/**

 * @test

 * @key headful

 * @bug 8216971

 * @summary For JCheckBoxMenuItem actionPerformed() is called twice, when

 *  apple.laf.useScreenMenuBar=true and modifier is InputEvent.META_DOWN_MASK

 * @library /test/lib

 * @run main DoubleActionTest

 */

import javax.swing.JFrame;

import javax.swing.JMenu;

import javax.swing.JMenuBar;

import javax.swing.JCheckBoxMenuItem;

import javax.swing.SwingUtilities;

import javax.swing.AbstractAction;

import javax.swing.Action;

import javax.swing.KeyStroke;

import java.awt.event.ActionEvent;

import java.awt.event.InputEvent;

import java.awt.event.KeyEvent;

import java.awt.Robot;

import jdk.test.lib.Platform;

public class DoubleActionTest {

    private static int metaDownCount = 0;

    private static JFrame frame;

    private static final int ORIGIN_X = 200;

    private static final int ORIGIN_Y = 200;

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

        if (!System.getProperty("os.name").startsWith("Mac")) {

            System.out.println("This test is only for Mac OS, passed " +

            "automatically on other platforms.");

            return;

        }

        try {

            System.setProperty("apple.laf.useScreenMenuBar", "true");

            SwingUtilities.invokeAndWait(DoubleActionTest::createAndShowGUI);

            Robot robot = new Robot();

            robot.setAutoDelay(100);

            testKeyPress(robot);

            robot.delay(1000);

        } finally {

            SwingUtilities.invokeAndWait(()->frame.dispose());

            if (metaDownCount != 1) {

                throw new RuntimeException("Test Failed: actionPerformed is called twice");

            }

        }

    }

    private static void createAndShowGUI() {

        frame = new JFrame();

        final JMenuBar menubar = new JMenuBar();

        final JMenu fileMenu = new JMenu("OPEN ME");

        final MyAction myAction = new MyAction();

        final JCheckBoxMenuItem menuItem = new JCheckBoxMenuItem(myAction);

        fileMenu.add(menuItem);

        menubar.add(fileMenu);

        frame.setJMenuBar(menubar);

        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        frame.setBounds(ORIGIN_X, ORIGIN_X, 200, 200);

        frame.setVisible(true);

    }

    private static class MyAction extends AbstractAction {

        MyAction() {

            putValue(Action.NAME, "HIT MY ACCELERATOR KEY");

            putValue(Action.ACCELERATOR_KEY, KeyStroke.getKeyStroke(KeyEvent.VK_E, InputEvent.META_DOWN_MASK));

        }

        @Override

        public void actionPerformed(final ActionEvent e) {

            System.out.println("Action! called with modifiers: " + e.getModifiers() + "\n" + e);

            metaDownCount++;

        }

    }

    private static void testKeyPress(Robot robot) throws Exception {

        robot.mouseMove(ORIGIN_X + 50, ORIGIN_Y + 50);

        robot.waitForIdle();

        robot.keyPress(KeyEvent.VK_META);

        robot.keyPress(KeyEvent.VK_E);

        robot.keyRelease(KeyEvent.VK_E);

        robot.keyRelease(KeyEvent.VK_META);

        robot.waitForIdle();

    }

}