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