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jeremybenn |
/* java.beans.beancontext.BeanContextMembershipEvent
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Copyright (C) 1999, 2004 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package java.beans.beancontext;
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import java.util.Arrays;
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import java.util.Collection;
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import java.util.Iterator;
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/**
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* Event fired when children are added to or removed from a <code>BeanContext</code>.
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* Whether they were added or removed depends entirely on which method
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* of the listener interface was called.
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*
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* @author John Keiser
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* @since 1.2
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* @see java.beans.beancontext.BeanContextMembershipListener
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*/
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public class BeanContextMembershipEvent extends BeanContextEvent {
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private static final long serialVersionUID = 3499346510334590959L;
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/**
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* The children that were added or removed.
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*/
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protected Collection children;
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/**
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* Create a new membership event.
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* @param context the event source.
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* @param children the children added to or removed from the source.
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*/
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public BeanContextMembershipEvent(BeanContext context, Collection children) {
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super(context);
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this.children = children;
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}
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/**
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* Create a new membership event.
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* @param context the event source.
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* @param children the children added to or removed from the source.
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*/
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public BeanContextMembershipEvent(BeanContext context, Object[] children) {
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super(context);
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this.children = Arrays.asList(children);
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}
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/**
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* The number of children removed or added.
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* @return the number of children removed or added.
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*/
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public int size() {
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return children.size();
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}
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/**
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* An iterator that will step through all the children.
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* @return an iterator over all the children.
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*/
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public Iterator iterator() {
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return children.iterator();
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}
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/**
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* An array of the children.
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* @return an array of the children.
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*/
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public Object[] toArray() {
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return children.toArray();
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}
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/**
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* Tell whether the <code>Object</code> is one of the children added or removed.
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* @param child the child to check.
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* @return whether the <code>Object</code> is added or removed.
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*/
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public boolean contains(Object child) {
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return children.contains(child);
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}
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}
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