1 /*
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   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
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  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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  24  */
  25 
  26  /* @test
  27   * @bug  7160252
  28   * @summary Checks if events are delivered to a listener
  29   *          when a child node is added or removed
  30   */
  31 
  32 import java.util.prefs.*;
  33 
  34  public class AddNodeChangeListener {
  35 
  36      private static boolean failed = false;
  37      private static Preferences userRoot, N2;
  38      private static NodeChangeListenerAdd ncla;
  39 
  40      public static void main(String[] args)
  41          throws BackingStoreException, InterruptedException
  42      {
  43         userRoot = Preferences.userRoot();
  44         ncla = new NodeChangeListenerAdd();
  45         userRoot.addNodeChangeListener(ncla);
  46         //Should initiate a node added event
  47         addNode();
  48         // Should not initiate a node added event
  49         addNode();
  50         //Should initate a child removed event
  51         removeNode();
  52 
  53         if (failed)
  54             throw new RuntimeException("Failed");
  55     }
  56 
  57     private static void addNode()
  58         throws BackingStoreException, InterruptedException
  59     {
  60         N2 = userRoot.node("N2");
  61         userRoot.flush();
  62         Thread.sleep(3000);
  63         if (ncla.getAddNumber() != 1)
  64             failed = true;
  65     }
  66 
  67     private static void removeNode()
  68         throws BackingStoreException, InterruptedException
  69     {
  70         N2.removeNode();
  71         userRoot.flush();
  72         Thread.sleep(3000);
  73         if (ncla.getAddNumber() != 0)
  74             failed = true;
  75     }
  76 
  77     private static class NodeChangeListenerAdd implements NodeChangeListener {
  78         private int totalNode = 0;
  79 
  80         @Override
  81         public void childAdded(NodeChangeEvent evt) {
  82             totalNode++;
  83         }
  84 
  85         @Override
  86         public void childRemoved(NodeChangeEvent evt) {
  87             totalNode--;
  88         }
  89 
  90         public int getAddNumber(){
  91             return totalNode;
  92         }
  93     }
  94  }