LinuxDeviceTask.java :  » UnTagged » destroyallhumans » net » java » games » input » Android Open Source

/**
 * Copyright (C) 2003 Jeremy Booth (jeremy@newdawnsoftware.com)
 *
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions are met:
 *
 * Redistributions of source code must retain the above copyright notice, this 
 * list of conditions and the following disclaimer. Redistributions in binary 
 * form must reproduce the above copyright notice, this list of conditions and 
 * the following disclaimer in the documentation and/or other materials provided
 * with the distribution. 
 * The name of the author may not be used to endorse or promote products derived
 * from this software without specific prior written permission. 
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 
 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE
 */
package net.java.games.input;

import java.io.IOException;

abstract class LinuxDeviceTask {
  public final static int INPROGRESS = 1;
  public final static int COMPLETED = 2;
  public final static int FAILED = 3;
  
  private Object result;
  private IOException exception;
  private int state = INPROGRESS;
  
  public final void doExecute() {
    try {
      result = execute();
      state = COMPLETED;
    } catch (IOException e) {
      exception = e;
      state = FAILED;
    }
  }

  public final IOException getException() {
    return exception;
  }

  public final Object getResult() {
    return result;
  }

  public final int getState() {
    return state;
  }
  
  protected abstract Object execute() throws IOException;
}