1 /*
2 * Copyright (c) 2016, 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
24 /* @test
25 * @bug 8041909
26 * @summary Test to check JComboBox does not lose its ability to invoke
27 * registerd ActionListener in case of exception in ActionListener
28 * @run main ActionListenerExceptionTest
29 */
30
31 import java.awt.AWTEvent;
32 import java.awt.AWTException;
33 import java.awt.Dimension;
34 import java.awt.EventQueue;
35 import java.awt.Point;
36 import java.awt.Robot;
37 import java.awt.Toolkit;
38 import java.awt.event.ActionEvent;
39 import java.awt.event.ActionListener;
40 import java.awt.event.InputEvent;
41 import java.util.logging.Level;
42 import java.util.logging.Logger;
43 import javax.swing.JComboBox;
44 import javax.swing.JComponent;
45 import javax.swing.JFrame;
46 import javax.swing.JPopupMenu;
47 import javax.swing.JScrollPane;
48 import javax.swing.SwingUtilities;
49
50 public class ActionListenerExceptionTest {
51
52 static final int TOTAL_MENU_ITEMS = 3;
53 private volatile int count = 0;
54 private JFrame frame;
55 private JComboBox combo;
56
57 private int menuItemHeight = 0;
58 private int yPos = 0;
59 private Point cbPos = null;
60 private Dimension cbSize = null;
61
62
63 public static void main(String[] args) throws Exception {
64
65 // See EvenQueueProxy class description below.
66 EventQueue queue = Toolkit.getDefaultToolkit().getSystemEventQueue();
67 queue.push(new EventQueueProxy());
68
69 ActionListenerExceptionTest testObject = new ActionListenerExceptionTest();
70
71 testObject.createGUI();
72
73 testObject.test();
74
75 testObject.disposeGUI();
76
77 if (testObject.getCount() != TOTAL_MENU_ITEMS) {
78 throw new RuntimeException("ActionListener is not invoked expected number of times");
79 }
80 }
81
82 private void createGUI() throws Exception {
83 SwingUtilities.invokeAndWait(new Runnable() {
84 public void run() {
85 frame = new JFrame();
86 frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
87
88 combo = new JComboBox(new String[]{"One", "Two", "Three"});
89 combo.addActionListener(new ActionListener() {
90
91 @Override
92 public void actionPerformed(ActionEvent e) {
93 count++;
94 throw new RuntimeException();
95 }
96 });
97 combo.setSize(200, 20);
98 frame.add(combo);
99 frame.pack();
100 frame.setLocationRelativeTo(null);
101 frame.setVisible(true);
102
103 }
104 });
105 }
106
107 private void disposeGUI() throws Exception {
108 SwingUtilities.invokeAndWait(new Runnable() {
109 public void run() {
110 frame.dispose();
111 }
112 });
113 }
114
115 private void test() throws Exception {
116 Robot testRobot = new Robot();
117 testRobot.delay(200); // delay to make test frame visible on screen
118
119 SwingUtilities.invokeAndWait(new Runnable() {
120 public void run() {
121 cbPos = combo.getLocationOnScreen();
122 cbSize = combo.getSize();
123 }
124 });
125
126 Point center = new Point((cbPos.x + cbSize.width / 2), (cbPos.y + cbSize.height - 5));
127 testRobot.mouseMove(center.x, center.y);
128 testRobot.delay(100);
129
130 testRobot.mousePress(InputEvent.BUTTON1_DOWN_MASK);
131 testRobot.mouseRelease(InputEvent.BUTTON1_DOWN_MASK);
132 testRobot.delay(500); // delay to make popup visible
133
134 SwingUtilities.invokeAndWait(new Runnable() {
135 public void run() {
136 Object comp = combo.getUI().getAccessibleChild(combo, 0);
137 int i = 0;
138 JComponent scrollPane;
139 do {
140 scrollPane = (JComponent) ((JPopupMenu) comp).getComponent(i++);
141 } while (!(scrollPane instanceof JScrollPane));
142
143 menuItemHeight = scrollPane.getSize().height / TOTAL_MENU_ITEMS;
144 yPos = scrollPane.getLocationOnScreen().y + menuItemHeight / 2;
145 }
146 });
147
148 for (int i = 0; i < TOTAL_MENU_ITEMS; i++) {
149
150 testRobot.mouseMove(center.x, yPos);
151
152 testRobot.mousePress(InputEvent.BUTTON1_DOWN_MASK);
153 testRobot.delay(100);
154 testRobot.mouseRelease(InputEvent.BUTTON1_DOWN_MASK);
155 testRobot.delay(200);
156
157 yPos += menuItemHeight;
158 }
159
160 }
161
162 private int getCount() {
163 return count;
164 }
165 }
166
167 // Proxy class to invoke dispatchEvent and catch exceptions
168 //
169 // This is needed in order to test Exceptions from ActionListener
170 // Without this, jtreg reports test failure at first exception from ActionListener and
171 // we cannot test whether ActionListener is invoked again
172 class EventQueueProxy extends EventQueue {
173
174 protected void dispatchEvent(AWTEvent evt) {
175 try {
176 super.dispatchEvent(evt);
177 } catch (Exception e) {
178 System.out.println("Intentionally consumed Exception from ActionListener");
179 e.printStackTrace();
180 }
181 }
182 }
183