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  JTree.updateUI() invokes updateUI() on its TreeCellrenderer via
  28  * SwingUtilities.updateRendererOrEditorUI().
  29  * If the TreeCellrenderer is a parent of this JTree, 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.JFrame;
  39 import javax.swing.JScrollPane;
  40 import javax.swing.JTree;
  41 import javax.swing.SwingUtilities;
  42 import javax.swing.tree.TreeCellRenderer;
  43 import javax.swing.tree.DefaultTreeCellRenderer;
  44 
  45 public class UpdateUIRecursionTest extends JFrame implements TreeCellRenderer {
  46     JTree tree;
  47     DefaultTreeCellRenderer 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         tree = new JTree(listData);
  59         renderer = new DefaultTreeCellRenderer();
  60         getContentPane().add(new JScrollPane(tree), BorderLayout.CENTER);
  61         tree.setCellRenderer(this);
  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         tree.updateUI();
  83     }
  84 
  85     public void disposeUI() {
  86         setVisible(false);
  87         dispose();
  88     }
  89 
  90     @Override
  91     public Component getTreeCellRendererComponent(JTree tree, Object value,
  92                               boolean selected, boolean expanded, boolean leaf,
  93                               int row, boolean hasFocus)
  94     {
  95         return renderer.getTreeCellRendererComponent(tree, value, leaf,
  96                                                 expanded, leaf, row, hasFocus);
  97     }
  98 }