bug6510999.java revision 11111:4ef86895869c 
1/*
2 * Copyright (c) 2011, 2014, 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/* @test
24   @bug 6510999
25   @summary Selection in a JList with both scrollbars visible jumps on arrowkey-down
26   @author Alexander Potochkin
27   @run main bug6510999
28*/
29
30import javax.swing.*;
31import java.awt.*;
32import java.awt.event.KeyEvent;
33
34public class bug6510999 {
35    private static JScrollPane s;
36
37    private static void createGui() {
38        final JFrame frame = new JFrame();
39        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
40
41        DefaultListModel dlm = new DefaultListModel();
42        for (int i = 0; i < 100; i++)
43          dlm
44            .addElement(i + " listItemlistItemlistItemlistItemItem");
45        JList l = new JList();
46        l.setModel(dlm);
47        s = new JScrollPane(l);
48        l.setSelectedIndex(50);
49        l.ensureIndexIsVisible(50);
50
51        frame.add(s);
52        frame.setSize(200, 200);
53        frame.setLocationRelativeTo(null);
54        frame.setVisible(true);
55    }
56
57    public static void main(String[] args) throws Exception {
58        Robot robot = new Robot();
59        robot.setAutoDelay(10);
60        SwingUtilities.invokeAndWait(new Runnable() {
61            public void run() {
62                bug6510999.createGui();
63            }
64        });
65        robot.waitForIdle();
66        Point viewPosition = s.getViewport().getViewPosition();
67        robot.keyPress(KeyEvent.VK_DOWN);
68        robot.keyRelease(KeyEvent.VK_DOWN);
69        robot.waitForIdle();
70        if (!s.getViewport().getViewPosition().equals(viewPosition)) {
71            throw new RuntimeException("JScrollPane was unexpectedly scrolled");
72        }
73    }
74}
75