content: /*
   * Copyright 2013 Hannes Janetzek
   *
   * This file is part of the OpenScienceMap project (http://www.opensciencemap.org).
   *
   * This program is free software: you can redistribute it and/or modify it under the
   * terms of the GNU Lesser General Public License as published by the Free Software
   * Foundation, either version 3 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 of MERCHANTABILITY or FITNESS FOR A
   * PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public License along with
   * this program. If not, see <http://www.gnu.org/licenses/>.
   */
  package org.oscim.utils.async;
  
  public abstract class Task implements Runnable {
  
      public static final int ERROR = -1;
      public static final int CANCEL = 0;
      public static final int GO = 1;
      public static final int DONE = 2;
  
      protected int state = GO;
  
      boolean isCanceled;
  
      @Override
      public void run() {
          go(state == CANCEL);
      }
  
      /**
       * @return ignored
       */
      public abstract int go(boolean canceled);
  
      public void cancel() {
          state = CANCEL;
      }
  }
  