1 /*
2 * Copyright (c) 2016, 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
24 /**
25 * @test
26 * @key headful
27 * @bug 8041909
28 * @summary Test to check JComboBox does not lose its ability to invoke
29 * registerd ActionListener in case of exception in ActionListener
30 * @run main ActionListenerExceptionTest
31 */
32
33 import java.awt.AWTEvent;
34 import java.awt.AWTException;
35 import java.awt.Dimension;
36 import java.awt.EventQueue;
37 import java.awt.Point;
38 import java.awt.Robot;
39 import java.awt.Toolkit;
40 import java.awt.event.ActionEvent;
41 import java.awt.event.ActionListener;
42 import java.awt.event.InputEvent;
43 import java.util.logging.Level;
44 import java.util.logging.Logger;
45 import javax.swing.JComboBox;
46 import javax.swing.JComponent;
47 import javax.swing.JFrame;
48 import javax.swing.JPopupMenu;
49 import javax.swing.JScrollPane;
50 import javax.swing.SwingUtilities;
51
52 public class ActionListenerExceptionTest {
53
54 static final int TOTAL_MENU_ITEMS = 3;
55 private volatile int count = 0;
56 private JFrame frame;
57 private JComboBox combo;
58
59 private int menuItemHeight = 0;
60 private int yPos = 0;
61 private Point cbPos = null;
62 private Dimension cbSize = null;
63
64
65 public static void main(String[] args) throws Exception {
66
67 // See EvenQueueProxy class description below.
68 EventQueue queue = Toolkit.getDefaultToolkit().getSystemEventQueue();
69 queue.push(new EventQueueProxy());
70
71 ActionListenerExceptionTest testObject = new ActionListenerExceptionTest();
72
73 testObject.createGUI();
74
75 testObject.test();
76
77 testObject.disposeGUI();
78
79 if (testObject.getCount() != TOTAL_MENU_ITEMS) {
80 throw new RuntimeException("ActionListener is not invoked expected number of times");
81 }
82 }
83
84 private void createGUI() throws Exception {
85 SwingUtilities.invokeAndWait(new Runnable() {
86 public void run() {
87 frame = new JFrame();
88 frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
89
90 combo = new JComboBox(new String[]{"One", "Two", "Three"});
91 combo.addActionListener(new ActionListener() {
92
93 @Override
94 public void actionPerformed(ActionEvent e) {
95 count++;
96 throw new RuntimeException();
97 }
98 });
99 combo.setSize(200, 20);
100 frame.add(combo);
101 frame.pack();
102 frame.setLocationRelativeTo(null);
103 frame.setVisible(true);
104
105 }
106 });
107 }
108
109 private void disposeGUI() throws Exception {
110 SwingUtilities.invokeAndWait(new Runnable() {
111 public void run() {
112 frame.dispose();
113 }
114 });
115 }
116
117 private void test() throws Exception {
118 Robot testRobot = new Robot();
119 testRobot.delay(200); // delay to make test frame visible on screen
120
121 SwingUtilities.invokeAndWait(new Runnable() {
122 public void run() {
123 cbPos = combo.getLocationOnScreen();
124 cbSize = combo.getSize();
125 }
126 });
127
128 Point center = new Point((cbPos.x + cbSize.width / 2), (cbPos.y + cbSize.height - 5));
129 testRobot.mouseMove(center.x, center.y);
130 testRobot.delay(100);
131
132 testRobot.mousePress(InputEvent.BUTTON1_DOWN_MASK);
133 testRobot.mouseRelease(InputEvent.BUTTON1_DOWN_MASK);
134 testRobot.delay(500); // delay to make popup visible
135
136 SwingUtilities.invokeAndWait(new Runnable() {
137 public void run() {
138 Object comp = combo.getUI().getAccessibleChild(combo, 0);
139 int i = 0;
140 JComponent scrollPane;
141 do {
142 scrollPane = (JComponent) ((JPopupMenu) comp).getComponent(i++);
143 } while (!(scrollPane instanceof JScrollPane));
144
145 menuItemHeight = scrollPane.getSize().height / TOTAL_MENU_ITEMS;
146 yPos = scrollPane.getLocationOnScreen().y + menuItemHeight / 2;
147 }
148 });
149
150 for (int i = 0; i < TOTAL_MENU_ITEMS; i++) {
151
152 testRobot.mouseMove(center.x, yPos);
153
154 testRobot.mousePress(InputEvent.BUTTON1_DOWN_MASK);
155 testRobot.delay(100);
156 testRobot.mouseRelease(InputEvent.BUTTON1_DOWN_MASK);
157 testRobot.delay(200);
158
159 yPos += menuItemHeight;
160 }
161
162 }
163
164 private int getCount() {
165 return count;
166 }
167 }
168
169 // Proxy class to invoke dispatchEvent and catch exceptions
170 //
171 // This is needed in order to test Exceptions from ActionListener
172 // Without this, jtreg reports test failure at first exception from ActionListener and
173 // we cannot test whether ActionListener is invoked again
174 class EventQueueProxy extends EventQueue {
175
176 protected void dispatchEvent(AWTEvent evt) {
177 try {
178 super.dispatchEvent(evt);
179 } catch (Exception e) {
180 System.out.println("Intentionally consumed Exception from ActionListener");
181 e.printStackTrace();
182 }
183 }
184 }
185