1 /*
2 * Copyright 1997-1999 Sun Microsystems, Inc. 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. Sun designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22 * CA 95054 USA or visit www.sun.com if you need additional information or
23 * have any questions.
24 */
25
26 package java.beans.beancontext;
27
28 import java.beans.beancontext.BeanContextMembershipEvent;
29
30 import java.util.EventListener;
31
32 /**
33 * <p>
34 * Compliant BeanContexts fire events on this interface when the state of
35 * the membership of the BeanContext changes.
36 * </p>
37 *
38 * @author Laurence P. G. Cable
39 * @since 1.2
40 * @see java.beans.beancontext.BeanContext
41 */
42
43 public interface BeanContextMembershipListener extends EventListener {
44
45 /**
46 * Called when a child or list of children is added to a
47 * <code>BeanContext</code> that this listener is registered with.
48 * @param bcme The <code>BeanContextMembershipEvent</code>
49 * describing the change that occurred.
50 */
51 void childrenAdded(BeanContextMembershipEvent bcme);
52
53 /**
54 * Called when a child or list of children is removed
55 * from a <code>BeanContext</code> that this listener
56 * is registered with.
57 * @param bcme The <code>BeanContextMembershipEvent</code>
58 * describing the change that occurred.
59 */
60 void childrenRemoved(BeanContextMembershipEvent bcme);
61 }
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