| /******************************************************************************* |
| * Copyright (c) 2003, 2008 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.osgi.framework.eventmgr; |
| |
| import java.util.Set; |
| |
| /** |
| * This class manages a list of listeners. |
| * |
| * Listeners may be added or removed as necessary. |
| * |
| * This class uses identity for comparison, not equals. |
| * |
| * @since 3.1 |
| * @deprecated As of 3.5. Replaced by CopyOnWriteIdentityMap. |
| * @noextend This class is not intended to be subclassed by clients. |
| */ |
| public class EventListeners { |
| private final CopyOnWriteIdentityMap list = new CopyOnWriteIdentityMap(); |
| |
| /** |
| * Creates an empty listener list. |
| * |
| */ |
| public EventListeners() { |
| super(); |
| } |
| |
| /** |
| * Creates an empty listener list. |
| * |
| * @param capacity This argument is ignored. |
| */ |
| public EventListeners(int capacity) { |
| this(); |
| } |
| |
| /** |
| * Add a listener to the list. |
| * If a listener object is already in the list, then it is replaced. |
| * This method calls the put method. |
| * |
| * @param listener This is the listener object to be added to the list. |
| * @param listenerObject This is an optional listener-specific object. |
| * This object will be passed to the EventDispatcher along with the listener |
| * when the listener is to be called. This may be null |
| * @throws IllegalArgumentException If listener is null. |
| */ |
| public void addListener(Object listener, Object listenerObject) { |
| list.put(listener, listenerObject); |
| } |
| |
| /** |
| * Remove a listener from the list. |
| * This method calls the remove method. |
| * |
| * @param listener This is the listener object to be removed from the list. |
| * @throws IllegalArgumentException If listener is null. |
| */ |
| public void removeListener(Object listener) { |
| list.remove(listener); |
| } |
| |
| /** |
| * Remove all listeners from the list. |
| * |
| * This method calls the clear method. |
| */ |
| public void removeAllListeners() { |
| list.clear(); |
| } |
| |
| /** |
| * Get the entry Set from the internal CopyOnWriteIdentityMap. |
| * @return The entry Set. |
| */ |
| Set entrySet() { |
| return list.entrySet(); |
| } |
| } |