/*

 * Copyright (c) 1999, Oracle and/or its affiliates. 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.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 */

package java.awt.event;

import java.util.EventListener;

/**

 * The listener interface for receiving ancestor moved and resized events.

 * The class that is interested in processing these events either implements

 * this interface (and all the methods it contains) or extends the abstract

 * <code>HierarchyBoundsAdapter</code> class (overriding only the method of

 * interest).

 * The listener object created from that class is then registered with a

 * Component using the Component's <code>addHierarchyBoundsListener</code>

 * method. When the hierarchy to which the Component belongs changes by

 * the resizing or movement of an ancestor, the relevant method in the listener

 * object is invoked, and the <code>HierarchyEvent</code> is passed to it.

 * <p>

 * Hierarchy events are provided for notification purposes ONLY;

 * The AWT will automatically handle changes to the hierarchy internally so

 * that GUI layout works properly regardless of whether a

 * program registers an <code>HierarchyBoundsListener</code> or not.

 *

 * @author      David Mendenhall

 * @see         HierarchyBoundsAdapter

 * @see         HierarchyEvent

 * @since       1.3

 */

public interface HierarchyBoundsListener extends EventListener {

    /**

     * Called when an ancestor of the source is moved.

     */

    public void ancestorMoved(HierarchyEvent e);

    /**

     * Called when an ancestor of the source is resized.

     */

    public void ancestorResized(HierarchyEvent e);

}