1/*
2 * Copyright (c) 2012, 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
24import java.awt.EventQueue;
25import java.awt.Rectangle;
26import java.awt.event.ActionEvent;
27import javax.swing.JTree;
28import javax.swing.plaf.basic.BasicTreeUI;
29import javax.swing.tree.TreePath;
30
31
32/* Originally reported as NetBeans bug 222081.
33 *
34 * @test
35 * @bug 8003830
36 * @summary NullPointerException in BasicTreeUI.Actions when getPathBounds returns null
37 * @author Jaroslav Tulach
38 * @run main bug8003830
39 */
40
41public class bug8003830 implements Runnable {
42    public static void main(String[] args) throws Exception {
43        EventQueue.invokeAndWait(new bug8003830());
44    }
45    @Override
46    public void run() {
47        testNPEAtActionsPage();
48    }
49
50    public void testNPEAtActionsPage() {
51        JTree tree = new JTree();
52        BasicTreeUI ui = new NullReturningTreeUI();
53        tree.setUI(ui);
54        BasicTreeUI.TreePageAction tpa = ui.new TreePageAction(0, "down");
55        tpa.actionPerformed(new ActionEvent(tree, 0, ""));
56    }
57
58    private static final class NullReturningTreeUI extends BasicTreeUI {
59        @Override
60        public Rectangle getPathBounds(JTree tree, TreePath path) {
61            // the method can return null and callers have to be ready for
62            // that. Simulate the case by returning null for unknown reason.
63            return null;
64        }
65    }
66}
67