/*

 * Copyright (c) 2014, 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

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

/**

 * @test

 * @bug 8032960

 * @summary checks that desktop properties work if Toolkit thread has no AppContext

 * @author Petr Pchelko

 */

import sun.awt.OSInfo;

import sun.awt.SunToolkit;

import javax.swing.*;

import java.awt.*;

import java.util.concurrent.atomic.AtomicBoolean;

import java.util.concurrent.atomic.AtomicReference;

public class NoAppContextTest {

    private static final ThreadGroup stubGroup = new ThreadGroup("stub");

    private static final ThreadGroup awtGroup = new ThreadGroup("AWT");

    private static final AtomicBoolean propertyChangeFired = new AtomicBoolean(false);

    private static Frame frame;

    private static final Object LOCK = new Object();

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

        if (OSInfo.getOSType() != OSInfo.OSType.WINDOWS) {

            // The test is for Windows platform only

            return;

        }

        createStubContext();

        Thread awtThread = new Thread(awtGroup, () -> {

            SunToolkit.createNewAppContext();

            SwingUtilities.invokeLater(() -> {

                synchronized (LOCK) {

                    frame = new Frame();

                    frame.setBounds(100, 100, 100, 100);

                    frame.setVisible(true);

                    Toolkit.getDefaultToolkit().addPropertyChangeListener("win.propNames", ev -> {

                        propertyChangeFired.set(true);

                    });

                }

            });

        });

        awtThread.start();

        awtThread.join();

        sync();

        final GraphicsDevice device = GraphicsEnvironment.getLocalGraphicsEnvironment()

                .getDefaultScreenDevice();

        AtomicReference<DisplayMode> originalRef = new AtomicReference<>();

        try {

            AtomicBoolean isSupported = new AtomicBoolean(true);

            invokeInAWT(() -> {

                if (device.isFullScreenSupported()) {

                    device.setFullScreenWindow(frame);

                } else {

                    isSupported.set(false);

                }

            });

            if (!isSupported.get()) {

                return;

            }

            invokeInAWT(() -> {

                if (device.isDisplayChangeSupported()) {

                    DisplayMode original = device.getDisplayMode();

                    originalRef.set(original);

                    try {

                        DisplayMode[] modes = device.getDisplayModes();

                        for (DisplayMode mode : modes) {

                            if (!mode.equals(original)) {

                                device.setDisplayMode(mode);

                                break;

                            }

                        }

                    } finally {

                        device.setDisplayMode(original);

                    }

                } else {

                    isSupported.set(false);

                }

            });

            if (!isSupported.get()) {

                return;

            }

        } finally {

            invokeInAWT(() -> {

                device.setDisplayMode(originalRef.get());

                frame.dispose();

            });

        }

        if (!propertyChangeFired.get()) {

            throw new RuntimeException("Failed: PropertyChange did not fire");

        }

    }

    private static void invokeInAWT(Runnable r) throws InterruptedException {

        Thread awtThread = new Thread(awtGroup, () -> {

            SwingUtilities.invokeLater(() -> {

                synchronized (LOCK) {

                    r.run();

                }

            });

        });

        awtThread.start();

        awtThread.join();

        sync();

    }

    private static void createStubContext() throws InterruptedException {

        Thread stub = new Thread(stubGroup, SunToolkit::createNewAppContext);

        stub.start();

        stub.join();

    }

    /**

     * Runs realSync on a thread with an AppContext and waits for it to finish

     */

    private static void sync() throws InterruptedException {

        final AtomicReference<InterruptedException> exc = new AtomicReference<>(null);

        Thread syncThread = new Thread(awtGroup, () -> {

            try {

                ((SunToolkit) Toolkit.getDefaultToolkit()).realSync();

                Thread.sleep(2000);

            } catch (InterruptedException e) {

                exc.set(e);

            }

        });

        syncThread.start();

        syncThread.join();

        if (exc.get() != null) {

            throw exc.get();

        }

    }

}