/*
* 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(); }
/**
/**代码未完, 请加载全部代码(NowJava.com).**/