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 * 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.

 *

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 */

/**

 * @test

 * @key headful

 * @summary Memory leak in com.apple.laf.ScreenMenu: removed JMenuItems are still referenced

 * @requires (os.family == "mac")

 * @run main/timeout=300/othervm -Xmx16m ScreenMenuMemoryLeakTest

 */

import java.awt.EventQueue;

import java.lang.ref.WeakReference;

import java.lang.reflect.InvocationTargetException;

import java.util.Objects;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JMenu;

import javax.swing.JMenuBar;

import javax.swing.JMenuItem;

import javax.swing.WindowConstants;

public class ScreenMenuMemoryLeakTest {

    private static WeakReference<JMenuItem> sMenuItem;

    private static JFrame sFrame;

    private static JMenu sMenu;

    public static void main(String[] args) throws InvocationTargetException, InterruptedException {

        EventQueue.invokeAndWait(new Runnable() {

            @Override

            public void run() {

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

                showUI();

            }

        });

        EventQueue.invokeAndWait(new Runnable() {

            @Override

            public void run() {

                removeMenuItemFromMenu();

            }

        });

        JMenuItem menuItem = sMenuItem.get();

        EventQueue.invokeAndWait(new Runnable() {

            @Override

            public void run() {

                sFrame.dispose();

            }

        });

        if (menuItem != null) {

            throw new RuntimeException("The menu item should have been GC-ed");

        }

    }

    private static void showUI() {

        sFrame = new JFrame();

        sFrame.add(new JLabel("Some dummy content"));

        JMenuBar menuBar = new JMenuBar();

        sMenu = new JMenu("Menu");

        JMenuItem item = new JMenuItem("Item");

        sMenu.add(item);

        sMenuItem = new WeakReference<>(item);

        menuBar.add(sMenu);

        sFrame.setJMenuBar(menuBar);

        sFrame.setDefaultCloseOperation(WindowConstants.DO_NOTHING_ON_CLOSE);

        sFrame.pack();

        sFrame.setVisible(true);

    }

    private static void removeMenuItemFromMenu() {

        JMenuItem menuItem = sMenuItem.get();

        Objects.requireNonNull(menuItem, "The menu item should still be available at this point");

        sMenu.remove(menuItem);

    }

}