/*

 * Copyright (c) 2015, 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.

 */

import javax.swing.*;

import java.awt.*;

import java.awt.event.*;

import java.awt.image.BufferedImage;

import java.lang.reflect.InvocationTargetException;

import java.util.concurrent.TimeUnit;

import java.util.concurrent.locks.Condition;

import java.util.concurrent.locks.ReentrantLock;

public class FileDialogModalFocusTest {

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

        Frame frame = new Frame();

        FileDialog fileDialog = new FileDialog((Frame) null);

        test(frame, fileDialog);

        frame = new Frame();

        fileDialog = new FileDialog(frame);

        test(frame, fileDialog);

        System.out.println("ok");

    }

    private static void test(final Frame frame, final FileDialog fileDialog)

            throws InterruptedException, InvocationTargetException,

            AWTException {

        Button button = new Button();

        button.setBackground(Color.RED);

        button.addActionListener(new ActionListener() {

            @Override

            public void actionPerformed(ActionEvent e) {

                fileDialog.setVisible(true);

            }

        });

        frame.add(button);

        frame.setSize(200, 200);

        EventQueue.invokeAndWait(new Runnable() {

            @Override

            public void run() {

                frame.setVisible(true);

            }

        });

        Robot robot = new Robot();

        robot.setAutoDelay(200);

        robot.waitForIdle();

        Point point = button.getLocationOnScreen();

        point.translate(100, 100);

        robot.mouseMove(point.x, point.y);

        robot.mousePress(InputEvent.BUTTON1_MASK);

        robot.mouseRelease(InputEvent.BUTTON1_MASK);

        int delay = 0;

        while (frame.isFocused() && delay < 2000) {

            robot.delay(50);

            delay += 50;

        }

        ReentrantLock lock = new ReentrantLock();

        Condition condition = lock.newCondition();

        button.addComponentListener(new ComponentAdapter() {

            @Override

            public void componentResized(ComponentEvent e) {

                lock.lock();

                condition.signal();

                lock.unlock();

            }

        });

        lock.lock();

        EventQueue.invokeLater(new Runnable() {

            @Override

            public void run() {

                frame.setExtendedState(JFrame.MAXIMIZED_BOTH);

            }

        });

        condition.await(5, TimeUnit.SECONDS);

        lock.unlock();

        robot.delay(200);

        robot.waitForIdle();

        EventQueue.invokeAndWait(new Runnable() {

            @Override

            public void run() {

                button.requestFocus();

                Point p = new Point(button.getWidth() - 10, button.getHeight() - 10);

                SwingUtilities.convertPointToScreen(p, button);

                robot.mouseMove(p.x, p.y);

                robot.mousePress(InputEvent.BUTTON1_MASK);

                robot.mouseRelease(InputEvent.BUTTON1_MASK);

            }

        });

        robot.waitForIdle();

        Point p = new Point(100, 100);

        SwingUtilities.convertPointToScreen(p, button);

        BufferedImage image = robot.createScreenCapture(

                new Rectangle(p,

                        new Dimension(button.getWidth() - 200,

                                button.getHeight() - 200)));

        boolean found = false;

        for (int x = 0; x < image.getWidth(); x+=50) {

            for (int y = 0; y < image.getHeight(); y+=50) {

                if( (image.getRGB(x, y) & 0x00FFFF) != 0 ) {

                    found = true;

                    break;

                };

            }

        }

        frame.dispose();

        robot.waitForIdle();

        fileDialog.dispose();

        if(!found) {

            throw new RuntimeException("file chooser is underneath");

        }

    }

}