/*

 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 * questions.

 */

 /* @test

  * @bug  7160252 7197662

  * @summary Checks if events are delivered to a listener

  *          when a child node is added or removed

  * @run main/othervm -Djava.util.prefs.userRoot=. AddNodeChangeListener

  */

import java.util.prefs.*;

 public class AddNodeChangeListener {

     private static boolean failed = false;

     private static Preferences userRoot, N2;

     private static NodeChangeListenerAdd ncla;

     public static void main(String[] args)

         throws BackingStoreException, InterruptedException

     {

        userRoot = Preferences.userRoot();

        ncla = new NodeChangeListenerAdd();

        userRoot.addNodeChangeListener(ncla);

        //Should initiate a node added event

        addNode();

        // Should not initiate a node added event

        addNode();

        //Should initate a child removed event

        removeNode();

        if (failed)

            throw new RuntimeException("Failed");

    }

    private static void addNode()

        throws BackingStoreException, InterruptedException

    {

        N2 = userRoot.node("N2");

        userRoot.flush();

        Thread.sleep(3000);

        if (ncla.getAddNumber() != 1)

            failed = true;

    }

    private static void removeNode()

        throws BackingStoreException, InterruptedException

    {

        N2.removeNode();

        userRoot.flush();

        Thread.sleep(3000);

        if (ncla.getAddNumber() != 0)

            failed = true;

    }

    private static class NodeChangeListenerAdd implements NodeChangeListener {

        private int totalNode = 0;

        @Override

        public void childAdded(NodeChangeEvent evt) {

            totalNode++;

        }

        @Override

        public void childRemoved(NodeChangeEvent evt) {

            totalNode--;

        }

        public int getAddNumber(){

            return totalNode;

        }

    }

 }