| /* |
| * Copyright (c) 1997, 2009, 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; |
| |
| /** |
| * <p> |
| * <code>BeanContextEvent</code> is the abstract root event class |
| * for all events emitted |
| * from, and pertaining to the semantics of, a <code>BeanContext</code>. |
| * This class introduces a mechanism to allow the propagation of |
| * <code>BeanContextEvent</code> subclasses through a hierarchy of |
| * <code>BeanContext</code>s. The <code>setPropagatedFrom()</code> |
| * and <code>getPropagatedFrom()</code> methods allow a |
| * <code>BeanContext</code> to identify itself as the source |
| * of a propagated event. |
| * </p> |
| * |
| * @author Laurence P. G. Cable |
| * @since 1.2 |
| * @see java.beans.beancontext.BeanContext |
| */ |
| |
| public abstract class BeanContextEvent extends EventObject { |
| private static final long serialVersionUID = 7267998073569045052L; |
| |
| /** |
| * Contruct a BeanContextEvent |
| * |
| * @param bc The BeanContext source |
| */ |
| protected BeanContextEvent(BeanContext bc) { |
| super(bc); |
| } |
| |
| /** |
| * Gets the <code>BeanContext</code> associated with this event. |
| * @return the <code>BeanContext</code> associated with this event. |
| */ |
| public BeanContext getBeanContext() { return (BeanContext)getSource(); } |
| |
| /** |
| * Sets the <code>BeanContext</code> from which this event was propagated. |
| * @param bc the <code>BeanContext</code> from which this event |
| * was propagated |
| */ |
| public synchronized void setPropagatedFrom(BeanContext bc) { |
| propagatedFrom = bc; |
| } |
| |
| /** |
| * Gets the <code>BeanContext</code> from which this event was propagated. |
| * @return the <code>BeanContext</code> from which this |
| * event was propagated |
| */ |
| public synchronized BeanContext getPropagatedFrom() { |
| return propagatedFrom; |
| } |
| |
| /** |
| * Reports whether or not this event is |
| * propagated from some other <code>BeanContext</code>. |
| * @return <code>true</code> if propagated, <code>false</code> |
| * if not |
| */ |
| public synchronized boolean isPropagated() { |
| return propagatedFrom != null; |
| } |
| |
| /* |
| * fields |
| */ |
| |
| /** |
| * The <code>BeanContext</code> from which this event was propagated |
| */ |
| protected BeanContext propagatedFrom; |
| } |