--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/java/awt/event/ContainerEvent.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,151 @@
+/*
+ * Copyright 1996-2007 Sun Microsystems, Inc.  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.  Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+package java.awt.event;
+
+import java.awt.Container;
+import java.awt.Component;
+
+/**
+ * A low-level event which indicates that a container's contents
+ * changed because a component was added or removed.
+ * <P>
+ * Container events are provided for notification purposes ONLY;
+ * The AWT will automatically handle changes to the containers
+ * contents internally so that the program works properly regardless of
+ * whether the program is receiving these events or not.
+ * <P>
+ * This low-level event is generated by a container object (such as a
+ * Panel) when a component is added to it or removed from it.
+ * The event is passed to every <code>ContainerListener</code>
+ * or <code>ContainerAdapter</code> object which registered to receive such
+ * events using the component's <code>addContainerListener</code> method.
+ * (<code>ContainerAdapter</code> objects implement the
+ * <code>ContainerListener</code> interface.) Each such listener object
+ * gets this <code>ContainerEvent</code> when the event occurs.
+ *
+ * @see ContainerAdapter
+ * @see ContainerListener
+ * @see <a href="http://java.sun.com/docs/books/tutorial/post1.0/ui/containerlistener.html">Tutorial: Writing a Container Listener</a>
+ *
+ * @author Tim Prinzing
+ * @author Amy Fowler
+ * @since 1.1
+ */
+public class ContainerEvent extends ComponentEvent {
+
+    /**
+     * The first number in the range of ids used for container events.
+     */
+    public static final int CONTAINER_FIRST             = 300;
+
+    /**
+     * The last number in the range of ids used for container events.
+     */
+    public static final int CONTAINER_LAST              = 301;
+
+   /**
+     * This event indicates that a component was added to the container.
+     */
+    public static final int COMPONENT_ADDED     = CONTAINER_FIRST;
+
+    /**
+     * This event indicates that a component was removed from the container.
+     */
+    public static final int COMPONENT_REMOVED = 1 + CONTAINER_FIRST;
+
+    /**
+     * The non-null component that is being added or
+     * removed from the Container.
+     *
+     * @serial
+     * @see #getChild()
+     */
+    Component child;
+
+    /*
+     * JDK 1.1 serialVersionUID
+     */
+    private static final long serialVersionUID = -4114942250539772041L;
+
+    /**
+     * Constructs a <code>ContainerEvent</code> object.
+     * <p>Note that passing in an invalid <code>id</code> results in
+     * unspecified behavior. This method throws an
+     * <code>IllegalArgumentException</code> if <code>source</code>
+     * is <code>null</code>.
+     *
+     * @param source the <code>Component</code> object (container)
+     *               that originated the event
+     * @param id     an integer indicating the type of event
+     * @param child  the component that was added or removed
+     * @throws IllegalArgumentException if <code>source</code> is null
+     */
+    public ContainerEvent(Component source, int id, Component child) {
+        super(source, id);
+        this.child = child;
+    }
+
+    /**
+     * Returns the originator of the event.
+     *
+     * @return the <code>Container</code> object that originated
+     * the event, or <code>null</code> if the object is not a
+     * <code>Container</code>.
+     */
+    public Container getContainer() {
+        return (source instanceof Container) ? (Container)source : null;
+    }
+
+    /**
+     * Returns the component that was affected by the event.
+     *
+     * @return the Component object that was added or removed
+     */
+    public Component getChild() {
+        return child;
+    }
+
+    /**
+     * Returns a parameter string identifying this event.
+     * This method is useful for event-logging and for debugging.
+     *
+     * @return a string identifying the event and its attributes
+     */
+    public String paramString() {
+        String typeStr;
+        switch(id) {
+          case COMPONENT_ADDED:
+              typeStr = "COMPONENT_ADDED";
+              break;
+          case COMPONENT_REMOVED:
+              typeStr = "COMPONENT_REMOVED";
+              break;
+          default:
+              typeStr = "unknown type";
+        }
+        return typeStr + ",child="+child.getName();
+    }
+}