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HierarchyBoundsAdapter.java
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61 lines (58 loc) · 1.55 KB
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/*
* Copyright (c) 1999, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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package java.awt.event;
/**
* An abstract adapter class for receiving ancestor moved and resized events.
* The methods in this class are empty. This class exists as a
* convenience for creating listener objects.
* <p>
* Extend this class and override the method for the event of interest. (If
* you implement the <code>HierarchyBoundsListener</code> interface, you have
* to define both methods in it. This abstract class defines null methods for
* them both, so you only have to define the method for the event you care
* about.)
* <p>
* Create a listener object using your class and then register it with a
* Component using the Component's <code>addHierarchyBoundsListener</code>
* method. When the hierarchy to which the Component belongs changes by
* resize or movement of an ancestor, the relevant method in the listener
* object is invoked, and the <code>HierarchyEvent</code> is passed to it.
*
* @author David Mendenhall
* @see HierarchyBoundsListener
* @see HierarchyEvent
* @since 1.3
*/
public abstract class HierarchyBoundsAdapter implements HierarchyBoundsListener
{
/**
* 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) {}
}