/*MujMail - Simple mail client for J2MECopyright (C) 2008 David Hauzar <david.hauzar.mujmail@gmail.com>This program is free software; you can redistribute it and/or modifyit under the terms of the GNU General Public License as published bythe Free Software Foundation; either version 2 of the License, or(at your option) any later version.This program is distributed in the hope that it will be useful,but WITHOUT ANY WARRANTY; without even the implied warranty ofMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See theGNU General Public License for more details.You should have received a copy of the GNU General Public Licensealong with this program; if not, write to the Free SoftwareFoundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */package mujmail.tasks;/** * The background task that can be stopped. * * The progress manager of this task will displays stop button. The task should * monitor the return value of method stopped. If it is true, it should end the  * task that is executing. If the task will not monitor return value of method  * stopped, it will be not stopped even if user presses stop button. *  * @author David Hauzar */public abstract class StoppableBackgroundTask extends BackgroundTask         implements StoppableProgress {    private StoppableProgressManager progressManager;    public StoppableBackgroundTask(String taskName) {        super(taskName);    }        protected Object createProgressManager() {        progressManager = new StoppableProgressManager(this);        return progressManager;    }        public boolean stopped() {          if (DEBUG) { System.out.println("DEBUG StoppableBackgroundTask.stopped() - progress manager: " + progressManager); }        return progressManager.stopped();    }        /**     * Set the state of the task to stopped. That means that the method stopped     * will return true and the priority of the task will be setted to minimum.     */    public void stopTask() {        progressManager.stop();        setMinPriority();    } }