1 /* 2 * Copyright (c) 2016, 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 /** 25 * @test 26 * @key headful 27 * @bug 6567433 28 * 29 * @summary JComboBox.updateUI() invokes updateUI() on its cellrenderer via 30 * SwingUtilities.updateComponentTreeUI(). 31 * If the cellrenderer is a parent of this JComboBox the method recurses 32 * endless. 33 * This test tests that the fix is effective in avoiding recursion. 34 * 35 * @run main/othervm UpdateUIRecursionTest 36 */ 37 38 import java.awt.BorderLayout; 39 import java.awt.Component; 40 import javax.swing.DefaultListCellRenderer; 41 import javax.swing.JComboBox; 42 import javax.swing.JFrame; 43 import javax.swing.JList; 44 import javax.swing.JScrollPane; 45 import javax.swing.ListCellRenderer; 46 import javax.swing.SwingUtilities; 47 48 public class UpdateUIRecursionTest extends JFrame implements ListCellRenderer { 49 JComboBox combo; 50 DefaultListCellRenderer renderer; 51 52 public UpdateUIRecursionTest() { 53 super("UpdateUIRecursionTest"); 54 setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 55 setSize(400, 400); 56 57 String[] listData = { 58 "First", "Second", "Third", "Fourth", "Fifth", "Sixth" 59 }; 60 61 combo = new JComboBox(listData); 62 combo.setRenderer(this); 63 renderer = new DefaultListCellRenderer(); 64 getContentPane().add(new JScrollPane(combo), BorderLayout.CENTER); 65 66 setVisible(true); 67 } 68 69 public static void main(String[] args) throws Exception { 70 71 SwingUtilities.invokeAndWait(new Runnable() { 72 73 @Override 74 public void run() { 75 UpdateUIRecursionTest obj = new UpdateUIRecursionTest(); 76 77 obj.test(); 78 79 obj.disposeUI(); 80 } 81 }); 82 } 83 84 public void test() { 85 combo.updateUI(); 86 } 87 88 public void disposeUI() { 89 setVisible(false); 90 dispose(); 91 } 92 93 public Component getListCellRendererComponent(JList list, Object value, 94 int index, boolean isSelected, boolean cellHasFocus) 95 { 96 return renderer.getListCellRendererComponent(list, value, index, 97 isSelected, cellHasFocus); 98 } 99 } 100