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+/* 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;
+ }
+}