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
24 import java.lang.reflect.InvocationTargetException;
25 import java.util.ArrayList;
26 import java.util.Arrays;
27 import java.util.List;
28
29 import javax.accessibility.Accessible;
30 import javax.accessibility.AccessibleContext;
31 import javax.swing.AbstractListModel;
32 import javax.swing.JFrame;
33 import javax.swing.JList;
34 import javax.swing.SwingUtilities;
35 import javax.swing.WindowConstants;
36
37 /* @test
38 @bug 8076249
39 @summary NPE in AccessBridge while editing JList model
40 @author Mikhail Cherkasov
41 @run main AccessibleJListChildNPETest
42 */
43 public class AccessibleJListChildNPETest {
44
45 private static String[] model = { "1", "2", "3", "4", "5", "6" };
46 private static JList<String> list;
47
48 public static void main(String[] args) throws InvocationTargetException, InterruptedException {
49 SwingUtilities.invokeAndWait(new Runnable() {
50 @Override
51 public void run() {
52 JFrame frame = new JFrame();
53 frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
54 final MyModel dataModel = new MyModel(Arrays.asList(model));
55 list = new JList<>(dataModel);
56 frame.getContentPane().add(list);
57 frame.pack();
58 frame.setVisible(true);
59
60 }
61 });
62
63 SwingUtilities.invokeAndWait(new Runnable() {
64 @Override
65 public void run() {
66 AccessibleContext ac = list.getAccessibleContext();
67 MyModel model = (MyModel)list.getModel();
68 Accessible accessibleChild = ac.getAccessibleChild(model.getSize()-1);
69 model.removeFirst();
70 accessibleChild.getAccessibleContext().getAccessibleSelection();
71 accessibleChild.getAccessibleContext().getAccessibleText();
72 accessibleChild.getAccessibleContext().getAccessibleValue();
73 }
74 });
75 }
76
77 protected static class MyModel extends AbstractListModel<String> {
78 private List<String> items = new ArrayList<>();
79
80 MyModel(final List<String> newItems) {
81 super();
82 items.addAll(newItems);
83 fireIntervalAdded(this, 0, getSize() - 1);
84 }
85
86 void removeFirst() {
87 if(getSize() > 0) {
88 items.remove(0);
89 fireIntervalRemoved(this, 0, 0);
90 }
91 }
92
93 @Override
94 public int getSize() {
95 return items.size();
96 }
97
98 @Override
99 public String getElementAt(int index) {
100 return items.get(index);
101 }
102 }
103 }