java.awt.event.MouseMotionAdapter Maven / Gradle / Ivy

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*/


  


package java.awt.event;

/** 
 * An abstract adapter class for receiving mouse motion events.
 * The methods in this class are empty. This class exists as
 * convenience for creating listener objects.
 * 

 * Mouse motion events occur when a mouse is moved or dragged.
 * (Many such events will be generated in a normal program.
 * To track clicks and other mouse events, use the MouseAdapter.)
 * 

 * Extend this class to create a MouseEvent listener 
 * and override the methods for the events of interest. (If you implement the 
 * MouseMotionListener interface, you have to define all of
 * the methods in it. This abstract class defines null methods for them
 * all, so you can only have to define methods for events you care about.)
 * 
 * Create a listener object using the extended class and then register it with 
 * a component using the component's addMouseMotionListener 
 * method. When the mouse is moved or dragged, the relevant method in the 
 * listener object is invoked and the MouseEvent is passed to it.
 *
 * @author Amy Fowler
 * @version 1.14 01/23/03
 *
 * @see MouseEvent
 * @see MouseMotionListener
 * @see Tutorial: Writing a Mouse Motion Listener
 * @see Reference: The Java Class Libraries (update file)
 *
 * @since 1.1
 */
public abstract class MouseMotionAdapter implements MouseMotionListener
{

    public MouseMotionAdapter() { }

    /** 
     * Invoked when a mouse button is pressed on a component and then 
     * dragged.  Mouse drag events will continue to be delivered to
     * the component where the first originated until the mouse button is
     * released (regardless of whether the mouse position is within the
     * bounds of the component).
     */
    public void mouseDragged(MouseEvent e) { }

    /** 
     * Invoked when the mouse button has been moved on a component
     * (with no buttons no down).
     */
    public void mouseMoved(MouseEvent e) { }
}