[kaffe] CVS kaffe (dalibor): Merged in java.util.EventObject from GNU Classpath

[Kaffe CVS]

PatchSet 4060 
Date: 2003/09/24 20:45:22
Author: dalibor
Branch: HEAD
Tag: (none) 
Log:
Merged in java.util.EventObject from GNU Classpath

Members: 
	ChangeLog:1.1655->1.1656 
	libraries/javalib/java/util/EventObject.java:1.6->1.7 

Index: kaffe/ChangeLog
diff -u kaffe/ChangeLog:1.1655 kaffe/ChangeLog:1.1656
--- kaffe/ChangeLog:1.1655	Wed Sep 24 19:06:22 2003
+++ kaffe/ChangeLog	Wed Sep 24 20:45:22 2003
@@ -1,3 +1,8 @@
+2003-09-24  James Simmons  <jsimmons at infradead.org>
+
+	* libraries/javalib/java/util/EventObject.java:
+	Replaced by implementation from GNU Classpath.
+	
 2003-09-24  Dalibor Topic <robilad at kaffe.org>
 
 	* libraries/javalib/java/lang/Boolean.java:
Index: kaffe/libraries/javalib/java/util/EventObject.java
diff -u kaffe/libraries/javalib/java/util/EventObject.java:1.6 kaffe/libraries/javalib/java/util/EventObject.java:1.7
--- kaffe/libraries/javalib/java/util/EventObject.java:1.6	Wed Mar 13 21:01:55 2002
+++ kaffe/libraries/javalib/java/util/EventObject.java	Wed Sep 24 20:45:23 2003
@@ -1,31 +1,101 @@
-/*
- * Java core library component.
- *
- * Copyright (c) 1997, 1998
- *      Transvirtual Technologies, Inc.  All rights reserved.
- *
- * See the file "license.terms" for information on usage and redistribution
- * of this file.
- */
+/* EventObject.java -- represents an event on an object
+   Copyright (C) 1999, 2000, 2002 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.
+
+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.util;
 
 import java.io.Serializable;
 
-public class EventObject extends Object
-  implements Serializable
+/**
+ * Represents Events fired by Objects.
+ *
+ * @author Eric Blake <ebb9 at email.byu.edu>
+ * @see EventListener
+ * @since 1.1
+ * @status updated to 1.4
+ */
+public class EventObject implements Serializable
 {
-	protected transient Object source;
-
-public EventObject(Object src) {
-	source = src;
-}
-
-public Object getSource() {
-	return (source);
-}
-
-public String toString() {
-	return (getClass().getName() + "[source=" + source.toString() + ']');
-}
-}
+  /**
+   * Compatible with JDK 1.1+.
+   */
+  private static final long serialVersionUID = 5516075349620653480L;
+
+  /**
+   * The source object; in other words, the object which this event takes
+   * place on.
+   */
+  protected transient Object source;
+
+  /**
+   * Constructs an EventObject with the specified source.
+   *
+   * @param source the source of the event
+   * @throws IllegalArgumentException if source is null (This is not
+   *         specified, but matches the behavior of the JDK)
+   */
+  public EventObject(Object source)
+  {
+    // This check for null is stupid, if you ask me, since source is
+    // protected and non-final, so a subclass can set it to null later on.
+    if (source == null)
+      throw new IllegalArgumentException();
+    this.source = source;
+  }
+
+  /**
+   * Returns the source of the event.
+   *
+   * @return the event source
+   */
+  public Object getSource()
+  {
+    return source;
+  }
+
+  /**
+   * Converts the event to a String. The format is not specified, but by
+   * observation, the JDK uses:
+   * <code>getClass().getName() + "[source=" + source + "]";</code>.
+   *
+   * @return String representation of the Event
+   */
+  public String toString()
+  {
+    return getClass().getName() + "[source=" + source + "]";
+  }
+} // class EventObject