/*

 * Copyright (c) 2017, 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 java.awt.EventQueue;

import java.awt.FlowLayout;

import java.awt.GraphicsConfiguration;

import java.awt.GraphicsDevice;

import java.awt.GraphicsEnvironment;

import java.awt.Insets;

import java.awt.Point;

import java.awt.Rectangle;

import java.awt.Robot;

import java.awt.Toolkit;

import java.awt.event.InputEvent;

import javax.swing.JComboBox;

import javax.swing.JFrame;

import javax.swing.UIManager;

/**

 * @test

 * @bug 8176448

 * @run main/timeout=600 JComboBoxPopupLocation

 */

public final class JComboBoxPopupLocation {

    private static final int SIZE = 300;

    public static final String PROPERTY_NAME = "JComboBox.isPopDown";

    private static volatile Robot robot;

    private static volatile JComboBox<String> comboBox;

    private static volatile JFrame frame;

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

        robot = new Robot();

        robot.setAutoDelay(100);

        robot.setAutoWaitForIdle(true);

        GraphicsEnvironment ge =

                GraphicsEnvironment.getLocalGraphicsEnvironment();

        GraphicsDevice[] sds = ge.getScreenDevices();

        UIManager.LookAndFeelInfo[] lookAndFeelArray =

                UIManager.getInstalledLookAndFeels();

        for (UIManager.LookAndFeelInfo lookAndFeelItem : lookAndFeelArray) {

            System.setProperty(PROPERTY_NAME, "true");

            step(sds, lookAndFeelItem);

            if (lookAndFeelItem.getClassName().contains("Aqua")) {

                System.setProperty(PROPERTY_NAME, "false");

                step(sds, lookAndFeelItem);

            }

        }

    }

    private static void step(GraphicsDevice[] sds,

                             UIManager.LookAndFeelInfo lookAndFeelItem)

            throws Exception {

        UIManager.setLookAndFeel(lookAndFeelItem.getClassName());

        Point left = null;

        for (final GraphicsDevice sd : sds) {

            GraphicsConfiguration gc = sd.getDefaultConfiguration();

            Rectangle bounds = gc.getBounds();

            if (left == null || left.x > bounds.x) {

                left = new Point(bounds.x, bounds.y + bounds.height / 2);

            }

            Point point = new Point(bounds.x, bounds.y);

            Insets insets = Toolkit.getDefaultToolkit().getScreenInsets(gc);

            while (point.y < bounds.y + bounds.height - insets.bottom - SIZE ) {

                while (point.x < bounds.x + bounds.width - insets.right - SIZE) {

                    try {

                        EventQueue.invokeAndWait(() -> {

                            setup(point);

                        });

                        robot.waitForIdle();

                        test(comboBox);

                        robot.waitForIdle();

                        validate(comboBox);

                        robot.waitForIdle();

                        point.translate(bounds.width / 5, 0);

                    } finally {

                        dispose();

                    }

                }

                point.setLocation(bounds.x, point.y + bounds.height / 5);

            }

        }

        if (left != null) {

            final Point finalLeft = left;

            finalLeft.translate(-50, 0);

            try {

                EventQueue.invokeAndWait(() -> {

                    setup(finalLeft);

                });

                robot.waitForIdle();

                test(comboBox);

                robot.waitForIdle();

                validate(comboBox);

            } finally {

                dispose();

            }

        }

    }

    private static void dispose() throws Exception {

        EventQueue.invokeAndWait(() -> {

            if (frame != null) {

                frame.dispose();

            }

        });

    }

    private static void setup(final Point tmp) {

        comboBox = new JComboBox<>();

        for (int i = 1; i < 7; i++) {

            comboBox.addItem("Long-long-long-long-long text in the item-" + i);

        }

        String property = System.getProperty(PROPERTY_NAME);

        comboBox.putClientProperty(PROPERTY_NAME, Boolean.valueOf(property));

        frame = new JFrame();

        frame.setAlwaysOnTop(true);

        frame.setLayout(new FlowLayout());

        frame.add(comboBox);

        frame.pack();

        frame.setSize(frame.getWidth(), SIZE);

        frame.setVisible(true);

        frame.setLocation(tmp.x, tmp.y);

    }

    private static void test(final JComboBox comboBox) throws Exception {

        Point pt = comboBox.getLocationOnScreen();

        robot.mouseMove(pt.x + comboBox.getWidth() / 2,

                        pt.y + comboBox.getHeight() / 2);

        robot.mousePress(InputEvent.BUTTON1_DOWN_MASK);

        robot.mouseRelease(InputEvent.BUTTON1_DOWN_MASK);

        int x = pt.x + comboBox.getWidth() / 2;

        int y = pt.y + comboBox.getHeight() / 2 + 70;

        robot.mouseMove(x, y);

        robot.mousePress(InputEvent.BUTTON1_DOWN_MASK);

        robot.mouseRelease(InputEvent.BUTTON1_DOWN_MASK);

    }

    private static void validate(final JComboBox comboBox) throws Exception {

        EventQueue.invokeAndWait(() -> {

            if (comboBox.getSelectedIndex() == 0) {

                throw new RuntimeException();

            }

        });

    }

}