Showing the changes to java/pkg/java/beans/beancontext/BeanContextMembershipEvent.java (1 of 18352 files). Show all
Unified · Split
| @@ -0,0 +1,131 @@ | |||
| 1 | /* | ||
| 2 | * Copyright (c) 1997, 2009, Oracle and/or its affiliates. All rights reserved. | ||
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
| 4 | * | ||
| 5 | * This code is free software; you can redistribute it and/or modify it | ||
| 6 | * under the terms of the GNU General Public License version 2 only, as | ||
| 7 | * published by the Free Software Foundation. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle in the LICENSE file that accompanied this code. | ||
| 10 | * | ||
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| 14 | * version 2 for more details (a copy is included in the LICENSE file that | ||
| 15 | * accompanied this code). | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU General Public License version | ||
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, | ||
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| 20 | * | ||
| 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * questions. | ||
| 24 | */ | ||
| 25 | |||
| 26 | package java.beans.beancontext; | ||
| 27 | |||
| 28 | import java.util.EventObject; | ||
| 29 | |||
| 30 | import java.beans.beancontext.BeanContext; | ||
| 31 | import java.beans.beancontext.BeanContextEvent; | ||
| 32 | |||
| 33 | import java.util.Arrays; | ||
| 34 | import java.util.Collection; | ||
| 35 | import java.util.Iterator; | ||
| 36 | |||
| 37 | /** | ||
| 38 | * A <code>BeanContextMembershipEvent</code> encapsulates | ||
| 39 | * the list of children added to, or removed from, | ||
| 40 | * the membership of a particular <code>BeanContext</code>. | ||
| 41 | * An instance of this event is fired whenever a successful | ||
| 42 | * add(), remove(), retainAll(), removeAll(), or clear() is | ||
| 43 | * invoked on a given <code>BeanContext</code> instance. | ||
| 44 | * Objects interested in receiving events of this type must | ||
| 45 | * implement the <code>BeanContextMembershipListener</code> | ||
| 46 | * interface, and must register their intent via the | ||
| 47 | * <code>BeanContext</code>'s | ||
| 48 | * <code>addBeanContextMembershipListener(BeanContextMembershipListener bcml) | ||
| 49 | * </code> method. | ||
| 50 | * | ||
| 51 | * @author Laurence P. G. Cable | ||
| 52 | * @since 1.2 | ||
| 53 | * @see java.beans.beancontext.BeanContext | ||
| 54 | * @see java.beans.beancontext.BeanContextEvent | ||
| 55 | * @see java.beans.beancontext.BeanContextMembershipListener | ||
| 56 | */ | ||
| 57 | public class BeanContextMembershipEvent extends BeanContextEvent { | ||
| 58 | private static final long serialVersionUID = 3499346510334590959L; | ||
| 59 | |||
| 60 | /** | ||
| 61 | * Contruct a BeanContextMembershipEvent | ||
| 62 | * | ||
| 63 | * @param bc The BeanContext source | ||
| 64 | * @param changes The Children affected | ||
| 65 | * @throws NullPointerException if <CODE>changes</CODE> is <CODE>null</CODE> | ||
| 66 | */ | ||
| 67 | |||
| 68 | public BeanContextMembershipEvent(BeanContext bc, Collection changes) { | ||
| 69 | super(bc); | ||
| 70 | |||
| 71 | if (changes == null) throw new NullPointerException( | ||
| 72 | "BeanContextMembershipEvent constructor: changes is null."); | ||
| 73 | |||
| 74 | children = changes; | ||
| 75 | } | ||
| 76 | |||
| 77 | /** | ||
| 78 | * Contruct a BeanContextMembershipEvent | ||
| 79 | * | ||
| 80 | * @param bc The BeanContext source | ||
| 81 | * @param changes The Children effected | ||
| 82 | * @exception NullPointerException if changes associated with this | ||
| 83 | * event are null. | ||
| 84 | */ | ||
| 85 | |||
| 86 | public BeanContextMembershipEvent(BeanContext bc, Object[] changes) { | ||
| 87 | super(bc); | ||
| 88 | |||
| 89 | if (changes == null) throw new NullPointerException( | ||
| 90 | "BeanContextMembershipEvent: changes is null."); | ||
| 91 | |||
| 92 | children = Arrays.asList(changes); | ||
| 93 | } | ||
| 94 | |||
| 95 | /** | ||
| 96 | * Gets the number of children affected by the notification. | ||
| 97 | * @return the number of children affected by the notification | ||
| 98 | */ | ||
| 99 | public int size() { return children.size(); } | ||
| 100 | |||
| 101 | /** | ||
| 102 | * Is the child specified affected by the event? | ||
| 103 | * @return <code>true</code> if affected, <code>false</code> | ||
| 104 | * if not | ||
| 105 | */ | ||
| 106 | public boolean contains(Object child) { | ||
| 107 | return children.contains(child); | ||
| 108 | } | ||
| 109 | |||
| 110 | /** | ||
| 111 | * Gets the array of children affected by this event. | ||
| 112 | * @return the array of children affected | ||
| 113 | */ | ||
| 114 | public Object[] toArray() { return children.toArray(); } | ||
| 115 | |||
| 116 | /** | ||
| 117 | * Gets the array of children affected by this event. | ||
| 118 | * @return the array of children effected | ||
| 119 | */ | ||
| 120 | public Iterator iterator() { return children.iterator(); } | ||
| 121 | |||
| 122 | /* | ||
| 123 | * fields | ||
| 124 | */ | ||
| 125 | |||
| 126 | /** | ||
| 127 | * The list of children affected by this | ||
| 128 | * event notification. | ||
| 129 | */ | ||
| 130 | protected Collection children; | ||
| 131 | } | ||