1/*
2 * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24import java.awt.EventQueue;
25import java.awt.FlowLayout;
26import java.awt.GraphicsConfiguration;
27import java.awt.GraphicsDevice;
28import java.awt.GraphicsEnvironment;
29import java.awt.Insets;
30import java.awt.Point;
31import java.awt.Rectangle;
32import java.awt.Robot;
33import java.awt.Toolkit;
34import java.awt.event.InputEvent;
35
36import javax.swing.JComboBox;
37import javax.swing.JFrame;
38import javax.swing.UIManager;
39
40/**
41 * @test
42 * @bug 8176448
43 * @run main/timeout=600 JComboBoxPopupLocation
44 */
45public final class JComboBoxPopupLocation {
46
47    private static final int SIZE = 300;
48    public static final String PROPERTY_NAME = "JComboBox.isPopDown";
49    private static volatile Robot robot;
50    private static volatile JComboBox<String> comboBox;
51    private static volatile JFrame frame;
52
53    public static void main(final String[] args) throws Exception {
54        robot = new Robot();
55        robot.setAutoDelay(100);
56        robot.setAutoWaitForIdle(true);
57        GraphicsEnvironment ge =
58                GraphicsEnvironment.getLocalGraphicsEnvironment();
59        GraphicsDevice[] sds = ge.getScreenDevices();
60        UIManager.LookAndFeelInfo[] lookAndFeelArray =
61                UIManager.getInstalledLookAndFeels();
62        for (UIManager.LookAndFeelInfo lookAndFeelItem : lookAndFeelArray) {
63            System.setProperty(PROPERTY_NAME, "true");
64            step(sds, lookAndFeelItem);
65            if (lookAndFeelItem.getClassName().contains("Aqua")) {
66                System.setProperty(PROPERTY_NAME, "false");
67                step(sds, lookAndFeelItem);
68            }
69        }
70    }
71
72    private static void step(GraphicsDevice[] sds,
73                             UIManager.LookAndFeelInfo lookAndFeelItem)
74            throws Exception {
75        UIManager.setLookAndFeel(lookAndFeelItem.getClassName());
76        Point left = null;
77        for (final GraphicsDevice sd : sds) {
78            GraphicsConfiguration gc = sd.getDefaultConfiguration();
79            Rectangle bounds = gc.getBounds();
80            if (left == null || left.x > bounds.x) {
81                left = new Point(bounds.x, bounds.y + bounds.height / 2);
82            }
83            Point point = new Point(bounds.x, bounds.y);
84            Insets insets = Toolkit.getDefaultToolkit().getScreenInsets(gc);
85            while (point.y < bounds.y + bounds.height - insets.bottom - SIZE ) {
86                while (point.x < bounds.x + bounds.width - insets.right - SIZE) {
87                    try {
88                        EventQueue.invokeAndWait(() -> {
89                            setup(point);
90                        });
91                        robot.waitForIdle();
92                        test(comboBox);
93                        robot.waitForIdle();
94                        validate(comboBox);
95                        robot.waitForIdle();
96                        point.translate(bounds.width / 5, 0);
97                    } finally {
98                        dispose();
99                    }
100                }
101                point.setLocation(bounds.x, point.y + bounds.height / 5);
102            }
103        }
104        if (left != null) {
105            final Point finalLeft = left;
106            finalLeft.translate(-50, 0);
107            try {
108                EventQueue.invokeAndWait(() -> {
109                    setup(finalLeft);
110                });
111                robot.waitForIdle();
112                test(comboBox);
113                robot.waitForIdle();
114                validate(comboBox);
115            } finally {
116                dispose();
117            }
118        }
119    }
120
121    private static void dispose() throws Exception {
122        EventQueue.invokeAndWait(() -> {
123            if (frame != null) {
124                frame.dispose();
125            }
126        });
127    }
128
129    private static void setup(final Point tmp) {
130        comboBox = new JComboBox<>();
131        for (int i = 1; i < 7; i++) {
132            comboBox.addItem("Long-long-long-long-long text in the item-" + i);
133        }
134        String property = System.getProperty(PROPERTY_NAME);
135        comboBox.putClientProperty(PROPERTY_NAME, Boolean.valueOf(property));
136        frame = new JFrame();
137        frame.setAlwaysOnTop(true);
138        frame.setLayout(new FlowLayout());
139        frame.add(comboBox);
140        frame.pack();
141        frame.setSize(frame.getWidth(), SIZE);
142        frame.setVisible(true);
143        frame.setLocation(tmp.x, tmp.y);
144    }
145
146    private static void test(final JComboBox comboBox) throws Exception {
147        Point pt = comboBox.getLocationOnScreen();
148        robot.mouseMove(pt.x + comboBox.getWidth() / 2,
149                        pt.y + comboBox.getHeight() / 2);
150        robot.mousePress(InputEvent.BUTTON1_DOWN_MASK);
151        robot.mouseRelease(InputEvent.BUTTON1_DOWN_MASK);
152        int x = pt.x + comboBox.getWidth() / 2;
153        int y = pt.y + comboBox.getHeight() / 2 + 70;
154        robot.mouseMove(x, y);
155        robot.mousePress(InputEvent.BUTTON1_DOWN_MASK);
156        robot.mouseRelease(InputEvent.BUTTON1_DOWN_MASK);
157    }
158
159    private static void validate(final JComboBox comboBox) throws Exception {
160        EventQueue.invokeAndWait(() -> {
161            if (comboBox.getSelectedIndex() == 0) {
162                throw new RuntimeException();
163            }
164        });
165    }
166}
167