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JDK 1.6
  javax.swing.event. AncestorListener View Javadoc
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/*
 * @(#)AncestorListener.java	1.13 05/11/17
 *
 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */
package javax.swing.event;

import java.awt.event.*;
import java.awt.*;
import java.util.*;

import javax.swing.*;

/**
 * AncestorListener
 *
 * Interface to support notification when changes occur to a JComponent or one
 * of its ancestors.  These include movement and when the component becomes
 * visible or invisible, either by the setVisible() method or by being added
 * or removed from the component hierarchy.
 *
 * @version 1.13 11/17/05
 * @author Dave Moore
 */
public interface AncestorListener extends EventListener {
    /**
     * Called when the source or one of its ancestors is made visible
     * either by setVisible(true) being called or by its being
     * added to the component hierarchy.  The method is only called
     * if the source has actually become visible.  For this to be true
     * all its parents must be visible and it must be in a hierarchy
     * rooted at a Window
     */
    public void ancestorAdded(AncestorEvent event);

    /**
     * Called when the source or one of its ancestors is made invisible
     * either by setVisible(false) being called or by its being
     * remove from the component hierarchy.  The method is only called
     * if the source has actually become invisible.  For this to be true
     * at least one of its parents must by invisible or it is not in
     * a hierarchy rooted at a Window
     */
    public void ancestorRemoved(AncestorEvent event);

    /**
     * Called when either the source or one of its ancestors is moved.
     */
    public void ancestorMoved(AncestorEvent event);

}

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