/*

 * Copyright (c) 1997, 1999, 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.

 *

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package java.beans.beancontext;

import java.beans.beancontext.BeanContextMembershipEvent;

import java.util.EventListener;

/**

 * <p>

 * Compliant BeanContexts fire events on this interface when the state of

 * the membership of the BeanContext changes.

 * </p>

 *

 * @author      Laurence P. G. Cable

 * @since       1.2

 * @see         java.beans.beancontext.BeanContext

 */

public interface BeanContextMembershipListener extends EventListener {

    /**

     * Called when a child or list of children is added to a

     * <code>BeanContext</code> that this listener is registered with.

     * @param bcme The <code>BeanContextMembershipEvent</code>

     * describing the change that occurred.

     */

    void childrenAdded(BeanContextMembershipEvent bcme);

    /**

     * Called when a child or list of children is removed

     * from a <code>BeanContext</code> that this listener

     * is registered with.

     * @param bcme The <code>BeanContextMembershipEvent</code>

     * describing the change that occurred.

     */

    void childrenRemoved(BeanContextMembershipEvent bcme);

}