| /* java.beans.beancontext.BeanContextEvent |
| Copyright (C) 1999 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath 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 for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| |
| package java.beans.beancontext; |
| |
| import java.util.EventObject; |
| |
| /** |
| * Generic superclass for events fired by <code>BeanContext</code>s. |
| * |
| * @author John Keiser |
| * @since 1.2 |
| */ |
| |
| public abstract class BeanContextEvent extends EventObject |
| { |
| private static final long serialVersionUID = 7267998073569045052L; |
| |
| /** |
| * The <code>BeanContext</code> that most recently passed this |
| * event on. |
| */ |
| protected BeanContext propagatedFrom; |
| |
| /** |
| * Create a new event, from the specified <code>BeanContext</code>. |
| * <code>propagatedFrom</code> will be initialized to |
| * <code>null</code>. |
| * |
| * @param source the source of the event. |
| */ |
| protected BeanContextEvent(BeanContext source) |
| { |
| super(source); |
| } |
| |
| /** |
| * Get the <code>BeanContext</code> that originated this event. |
| * @return the originator of this event. |
| */ |
| public BeanContext getBeanContext() |
| { |
| return (BeanContext)getSource(); |
| } |
| |
| /** |
| * Get the most recent propagator of this event. |
| * If this value is <code>null</code>, you have received the event |
| * straight from the source. |
| * |
| * @return the most recent propagator of this event. |
| */ |
| public BeanContext getPropagatedFrom() |
| { |
| return propagatedFrom; |
| } |
| |
| /** |
| * Tell whether this event has been propagated. |
| * @return <code>true</code> iff <code>getPropagatedFrom() != null</code>. |
| */ |
| public boolean isPropagated() |
| { |
| return propagatedFrom != null; |
| } |
| |
| /** |
| * Set the most recent propagator of this event. |
| * @param propagator the most recent propagator of this event. |
| */ |
| public void setPropagatedFrom(BeanContext propagator) |
| { |
| propagatedFrom = propagator; |
| } |
| } |