mousemotionlistener.java

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/*
 * @(#)MouseMotionListener.java	1.14 03/01/23
 *
 * Copyright 2003 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */

package java.awt.event;

import java.util.EventListener;

/**
 * The listener interface for receiving mouse motion events on a component.
 * (For clicks and other mouse events, use the <code>MouseListener</code>.)
 * <P>
 * The class that is interested in processing a mouse motion event
 * either implements this interface (and all the methods it
 * contains) or extends the abstract <code>MouseMotionAdapter</code> class
 * (overriding only the methods of interest).
 * <P>
 * The listener object created from that class is then registered with a
 * component using the component's <code>addMouseMotionListener</code> 
 * method. A mouse motion event is generated when the mouse is moved
 * or dragged. (Many such events will be generated). When a mouse motion event
 * occurs, the relevant method in the listener object is invoked, and 
 * the <code>MouseEvent</code> is passed to it.
 *
 * @author Amy Fowler
 * @version 1.14, 01/23/03
 *
 * @see MouseMotionAdapter
 * @see MouseEvent
 * @see <a href="http://java.sun.com/docs/books/tutorial/post1.0/ui/mousemotionlistener.html">Tutorial: Writing a Mouse Motion Listener</a>
 * @see <a href="http://www.awl.com/cp/javaseries/jcl1_2.html">Reference: The Java Class Libraries (update file)</a>
 *
 * @since 1.1
 */
public interface MouseMotionListener extends EventListener {

    /**
     * Invoked when a mouse button is pressed on a component and then 
     * dragged.  <code>MOUSE_DRAGGED</code> events will continue to be 
     * delivered to the component where the drag originated until the 
     * mouse button is released (regardless of whether the mouse position 
     * is within the bounds of the component).
     * <p> 
     * Due to platform-dependent Drag&Drop implementations, 
     * <code>MOUSE_DRAGGED</code> events may not be delivered during a native 
     * Drag&Drop operation.  
     */
    public void mouseDragged(MouseEvent e);

    /**
     * Invoked when the mouse cursor has been moved onto a component
     * but no buttons have been pushed.
     */
    public void mouseMoved(MouseEvent e);

}