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}