1 /* 2 * Copyright (c) 2016, 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 /* @test 25 * @bug 6567433 26 * 27 * @summary JComboBox.updateUI() invokes updateUI() on its cellrenderer via 28 * SwingUtilities.updateComponentTreeUI(). 29 * If the cellrenderer is a parent of this JComboBox the method recurses 30 * endless. 31 * This test tests that the fix is effective in avoiding recursion. 32 * 33 * @run main/othervm UpdateUIRecursionTest 34 */ 35 36 import java.awt.BorderLayout; 37 import java.awt.Component; 38 import javax.swing.DefaultListCellRenderer; 39 import javax.swing.JComboBox; 40 import javax.swing.JFrame; 41 import javax.swing.JList; 42 import javax.swing.JScrollPane; 43 import javax.swing.ListCellRenderer; 44 import javax.swing.SwingUtilities; 45 46 public class UpdateUIRecursionTest extends JFrame implements ListCellRenderer { 47 JComboBox combo; 48 DefaultListCellRenderer renderer; 49 50 public UpdateUIRecursionTest() { 51 super("UpdateUIRecursionTest"); 52 setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 53 setSize(400, 400); 54 55 String[] listData = { 56 "First", "Second", "Third", "Fourth", "Fifth", "Sixth" 57 }; 58 59 combo = new JComboBox(listData); 60 combo.setRenderer(this); 61 renderer = new DefaultListCellRenderer(); 62 getContentPane().add(new JScrollPane(combo), BorderLayout.CENTER); 63 64 setVisible(true); 65 } 66 67 public static void main(String[] args) throws Exception { 68 69 SwingUtilities.invokeAndWait(new Runnable() { 70 71 @Override 72 public void run() { 73 UpdateUIRecursionTest obj = new UpdateUIRecursionTest(); 74 75 obj.test(); 76 77 obj.disposeUI(); 78 } 79 }); 80 } 81 82 public void test() { 83 combo.updateUI(); 84 } 85 86 public void disposeUI() { 87 setVisible(false); 88 dispose(); 89 } 90 91 public Component getListCellRendererComponent(JList list, Object value, 92 int index, boolean isSelected, boolean cellHasFocus) 93 { 94 return renderer.getListCellRendererComponent(list, value, index, 95 isSelected, cellHasFocus); 96 } 97 } 98