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Diffstat (limited to 'libjava/java/beans/beancontext/BeanContextEvent.java')
-rw-r--r-- | libjava/java/beans/beancontext/BeanContextEvent.java | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/libjava/java/beans/beancontext/BeanContextEvent.java b/libjava/java/beans/beancontext/BeanContextEvent.java new file mode 100644 index 00000000000..0e4f20ae1ec --- /dev/null +++ b/libjava/java/beans/beancontext/BeanContextEvent.java @@ -0,0 +1,91 @@ +/* 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., 59 Temple Place, Suite 330, Boston, MA +02111-1307 USA. + +As a special exception, if you link this library with other files to +produce an executable, this library does not by itself cause the +resulting executable to be covered by the GNU General Public License. +This exception does not however invalidate any other reasons why the +executable file might be covered by the GNU General Public License. */ + + +package java.beans.beancontext; + +import java.util.EventObject; + +/** + * Generic superclass for events fired by <code>BeanContext</code>s. + * + * @author John Keiser + * @since JDK1.2 + */ + +public abstract class BeanContextEvent extends EventObject { + /** + * 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; + } +} |