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  JList.updateUI() for invokes updateUI() on its cellrenderer via
  28  * SwingUtilities.updateComponentTreeUI().
  29  * If the cellrenderer is a parent of this JList 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.JFrame;
  40 import javax.swing.JList;
  41 import javax.swing.JScrollPane;
  42 import javax.swing.ListCellRenderer;
  43 import javax.swing.SwingUtilities;
  44 
  45 public class UpdateUIRecursionTest extends JFrame implements ListCellRenderer {
  46     JList list;
  47     DefaultListCellRenderer renderer;
  48 
  49     public UpdateUIRecursionTest() {
  50         super("UpdateUIRecursionTest");
  51         setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  52         setSize(400, 400);
  53 
  54         String[] listData = {
  55             "First", "Second", "Third", "Fourth", "Fifth", "Sixth"
  56         };
  57 
  58         list = new JList(listData);
  59         list.setCellRenderer(this);
  60         renderer = new DefaultListCellRenderer();
  61         getContentPane().add(new JScrollPane(list), BorderLayout.CENTER);
  62 
  63         setVisible(true);
  64     }
  65 
  66     public static void main(String[] args) throws Exception {
  67 
  68         SwingUtilities.invokeAndWait(new Runnable() {
  69 
  70             @Override
  71             public void run() {
  72                 UpdateUIRecursionTest obj = new UpdateUIRecursionTest();
  73 
  74                 obj.test();
  75 
  76                 obj.disposeUI();
  77             }
  78         });
  79     }
  80 
  81     public void test() {
  82         list.updateUI();
  83     }
  84 
  85     public void disposeUI() {
  86         setVisible(false);
  87         dispose();
  88     }
  89 
  90     public Component getListCellRendererComponent(JList list, Object value,
  91             int index, boolean isSelected, boolean cellHasFocus)
  92     {
  93         return renderer.getListCellRendererComponent(list, value, index,
  94                                                      isSelected, cellHasFocus);
  95     }
  96 }
  97