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

}