| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.commons.net.util; |
| |
| import java.io.Serializable; |
| import java.util.EventListener; |
| import java.util.Iterator; |
| import java.util.concurrent.CopyOnWriteArrayList; |
| |
| /** |
| */ |
| |
| public class ListenerList implements Serializable, Iterable<EventListener> |
| { |
| private static final long serialVersionUID = -1934227607974228213L; |
| |
| private final CopyOnWriteArrayList<EventListener> __listeners; |
| |
| public ListenerList() |
| { |
| __listeners = new CopyOnWriteArrayList<EventListener>(); |
| } |
| |
| public void addListener(EventListener listener) |
| { |
| __listeners.add(listener); |
| } |
| |
| public void removeListener(EventListener listener) |
| { |
| __listeners.remove(listener); |
| } |
| |
| public int getListenerCount() |
| { |
| return __listeners.size(); |
| } |
| |
| /** |
| * Return an {@link Iterator} for the {@link EventListener} instances. |
| * |
| * @return an {@link Iterator} for the {@link EventListener} instances |
| * @since 2.0 |
| * TODO Check that this is a good defensive strategy |
| */ |
| // @Override |
| @Override |
| public Iterator<EventListener> iterator() { |
| return __listeners.iterator(); |
| } |
| |
| } |