001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.wicket.util.listener;
018
019/**
020 * Holds a set of IChangeListeners.
021 * 
022 * Note that these classes are not meant to be serializable or for you to hold them in session (see
023 * WICKET-2697)
024 * @param <T> 
025 */
026public final class ChangeListenerSet<T> extends ListenerCollection<IChangeListener<T>>
027{
028        private static final long serialVersionUID = 1L;
029
030        /**
031         * Notifies all change listeners of a change in {@code t}
032         * @param t the changed object
033         */
034        public void notifyListeners(final T t)
035        {
036                notify(new INotifier<IChangeListener<T>>()
037                {
038                        @Override
039                        public void notify(final IChangeListener<T> listener)
040                        {
041                                listener.onChange(t);
042                        }
043                });
044        }
045}