| /* |
| * Copyright (c) 1997, 2013, 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 |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * 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 |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package java.beans.beancontext; |
| |
| import java.util.EventObject; |
| |
| import java.beans.beancontext.BeanContext; |
| import java.beans.beancontext.BeanContextEvent; |
| |
| import java.util.Arrays; |
| import java.util.Collection; |
| import java.util.Iterator; |
| |
| /** |
| * A {@code BeanContextMembershipEvent} encapsulates |
| * the list of children added to, or removed from, |
| * the membership of a particular {@code BeanContext}. |
| * An instance of this event is fired whenever a successful |
| * add(), remove(), retainAll(), removeAll(), or clear() is |
| * invoked on a given {@code BeanContext} instance. |
| * Objects interested in receiving events of this type must |
| * implement the {@code BeanContextMembershipListener} |
| * interface, and must register their intent via the |
| * {@code BeanContext}'s |
| * {@code addBeanContextMembershipListener(BeanContextMembershipListener bcml)} |
| * method. |
| * |
| * @author Laurence P. G. Cable |
| * @since 1.2 |
| * @see java.beans.beancontext.BeanContext |
| * @see java.beans.beancontext.BeanContextEvent |
| * @see java.beans.beancontext.BeanContextMembershipListener |
| */ |
| public class BeanContextMembershipEvent extends BeanContextEvent { |
| private static final long serialVersionUID = 3499346510334590959L; |
| |
| /** |
| * Contruct a BeanContextMembershipEvent |
| * |
| * @param bc The BeanContext source |
| * @param changes The Children affected |
| * @throws NullPointerException if {@code changes} is {@code null} |
| */ |
| |
| @SuppressWarnings("rawtypes") |
| public BeanContextMembershipEvent(BeanContext bc, Collection changes) { |
| super(bc); |
| |
| if (changes == null) throw new NullPointerException( |
| "BeanContextMembershipEvent constructor: changes is null."); |
| |
| children = changes; |
| } |
| |
| /** |
| * Contruct a BeanContextMembershipEvent |
| * |
| * @param bc The BeanContext source |
| * @param changes The Children effected |
| * @exception NullPointerException if changes associated with this |
| * event are null. |
| */ |
| |
| public BeanContextMembershipEvent(BeanContext bc, Object[] changes) { |
| super(bc); |
| |
| if (changes == null) throw new NullPointerException( |
| "BeanContextMembershipEvent: changes is null."); |
| |
| children = Arrays.asList(changes); |
| } |
| |
| /** |
| * Gets the number of children affected by the notification. |
| * @return the number of children affected by the notification |
| */ |
| public int size() { return children.size(); } |
| |
| /** |
| * Is the child specified affected by the event? |
| * @return {@code true} if affected, {@code false} |
| * if not |
| * @param child the object to check for being affected |
| */ |
| public boolean contains(Object child) { |
| return children.contains(child); |
| } |
| |
| /** |
| * Gets the array of children affected by this event. |
| * @return the array of children affected |
| */ |
| public Object[] toArray() { return children.toArray(); } |
| |
| /** |
| * Gets the array of children affected by this event. |
| * @return the array of children effected |
| */ |
| @SuppressWarnings("rawtypes") |
| public Iterator iterator() { return children.iterator(); } |
| |
| /* |
| * fields |
| */ |
| |
| /** |
| * The list of children affected by this |
| * event notification. |
| */ |
| @SuppressWarnings("rawtypes") |
| protected Collection children; |
| } |