1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
|
/*
* Copyright (c) 2018, 2019, 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.
*/
/**
* @test
* @bug 8211987
* @key headful
* @requires (os.family == "windows")
* @summary Verify if Menu bar gets input focus even if Alt-released event is consumed.
* @modules java.desktop/com.sun.java.swing.plaf.windows
* @run main AltFocusIssueTest
*/
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.lang.reflect.InvocationTargetException;
import java.awt.Robot;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JTextArea;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
/**
* Try to demonstrate the wrong behavior
*/
public class AltFocusIssueTest {
/**
* Menu inside menu bar of the frame
*/
private static JMenu menu;
/**
* Text area to test on.
*/
private static JTextArea ta;
private static JFrame frame;
/**
* Test that the text area loses input focus although Alt-released event is consumed.
*
* @throws InterruptedException
* @throws InvocationTargetException
*/
public static void testAltEvents() throws Exception {
Robot robot = new Robot();
SwingUtilities.invokeAndWait(() -> {
try {
createUI();
} catch (Exception e) {
throw new RuntimeException(e);
}
});
robot.waitForIdle();
SwingUtilities.invokeAndWait(() -> ta.requestFocusInWindow());
robot.waitForIdle();
if (!ta.isFocusOwner()) {
throw new RuntimeException("textarea should have input focus");
}
if (menu.isSelected()) {
throw new RuntimeException("menu is selected...");
}
// Simulate an Alt-typed event
robot.keyPress(KeyEvent.VK_ALT);
robot.keyRelease(KeyEvent.VK_ALT);
robot.waitForIdle();
// Since the event is consumed, I expect the input focus to be in the text area
if (!ta.isFocusOwner()) {
throw new RuntimeException("textarea should still have input focus");
}
// OR
if (SwingUtilities.getRootPane(ta).isFocusOwner()) {
throw new RuntimeException("Focus should not be changed from the text area");
}
// OR
if (menu.isSelected()) {
throw new RuntimeException("Menu must not be selected");
}
}
/**
* Builds UI to test.
*
*/
private static void createUI() throws Exception {
// Install Windows L&F
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JMenuBar menuBar = new JMenuBar();
frame.setJMenuBar(menuBar);
menu = new JMenu("Menu");
menu.add(new JMenuItem("Menu item"));
menuBar.add(menu);
ta = new JTextArea();
frame.getContentPane().add(ta);
ta.addKeyListener( new KeyAdapter() {
@Override
public void keyReleased(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ALT) {
/*
* This is where I need to do special handling of the Alt-released event.
* After, nobody else must react to this event, thus I consume it.
*/
e.consume();
}
}
});
frame.setSize(400, 300);
frame.setVisible(true);
}
public static void main(String[] args) throws Exception {
try {
testAltEvents();
} finally {
if (frame != null) {
SwingUtilities.invokeAndWait(() -> frame.dispose());
}
}
}
}
|
