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  JList.updateUI() for invokes updateUI() on its cellrenderer via
  30  * SwingUtilities.updateComponentTreeUI().
  31  * If the cellrenderer is a parent of this JList 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.JFrame;
  42 import javax.swing.JList;
  43 import javax.swing.JScrollPane;
  44 import javax.swing.ListCellRenderer;
  45 import javax.swing.SwingUtilities;
  46 
  47 public class UpdateUIRecursionTest extends JFrame implements ListCellRenderer {
  48     JList list;
  49     DefaultListCellRenderer renderer;
  50 
  51     public UpdateUIRecursionTest() {
  52         super("UpdateUIRecursionTest");
  53         setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  54         setSize(400, 400);
  55 
  56         String[] listData = {
  57             "First", "Second", "Third", "Fourth", "Fifth", "Sixth"
  58         };
  59 
  60         list = new JList(listData);
  61         list.setCellRenderer(this);
  62         renderer = new DefaultListCellRenderer();
  63         getContentPane().add(new JScrollPane(list), BorderLayout.CENTER);
  64 
  65         setVisible(true);
  66     }
  67 
  68     public static void main(String[] args) throws Exception {
  69 
  70         SwingUtilities.invokeAndWait(new Runnable() {
  71 
  72             @Override
  73             public void run() {
  74                 UpdateUIRecursionTest obj = new UpdateUIRecursionTest();
  75 
  76                 obj.test();
  77 
  78                 obj.disposeUI();
  79             }
  80         });
  81     }
  82 
  83     public void test() {
  84         list.updateUI();
  85     }
  86 
  87     public void disposeUI() {
  88         setVisible(false);
  89         dispose();
  90     }
  91 
  92     public Component getListCellRendererComponent(JList list, Object value,
  93             int index, boolean isSelected, boolean cellHasFocus)
  94     {
  95         return renderer.getListCellRendererComponent(list, value, index,
  96                                                      isSelected, cellHasFocus);
  97     }
  98 }
  99