// **********************************************************************// // <copyright>// //  BBN Technologies//  10 Moulton Street//  Cambridge, MA 02138//  (617) 873-8000// //  Copyright (C) BBNT Solutions LLC. All rights reserved.// // </copyright>// **********************************************************************// // $Source: /cvs/distapps/openmap/src/openmap/com/bbn/openmap/util/Taskable.java,v $// $RCSfile: Taskable.java,v $// $Revision: 1.1.1.1.2.1 $// $Date: 2004/10/14 18:27:46 $// $Author: dietrick $// // **********************************************************************package com.bbn.openmap.util;import java.awt.event.ActionListener;/** * Taskables are ActionListeners that respond to events from Timers. * If a Taskable has been added to a Timer's queue, it will receive * <code>actionPerformed()</code> notifications each time the timer * expires. * <p> * Some OpenMap Layers are Taskables. These layers expect to refresh * their graphics at a certain rate. *  * @see javax.swing.Timer */public interface Taskable extends ActionListener {    /**     * Get the sleep hint in milliseconds. The Taskable implementation     * should determine the sleep (delay) interval between invocations     * of its <code>actionPerformed()</code>.     * <p>     * NOTE: this is only a hint for the timer. It's the Taskable's     * responsibility to determine if too little or too much time has     * elapsed between invocations of <code>actionPerformed()</code>.     *      * @return int milliseconds of sleep interval     */    public int getSleepHint();}