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