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JML 1.0 » net » sf » jml » DisplayPictureListener.java
/*
 * Copyright 2004-2005 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package net.sf.jml;

import net.sf.jml.message.p2p.DisplayPictureRetrieveWorker;

/**
 * This interface is used to be notified about the progress of the display 
 * picture (also emoticons) retrieval.
 * 
 * @author Angel Barragn Chacn
 */
public interface DisplayPictureListener {

  /**
   * Types of finalization for the MsnObject request process.
   */
  public enum ResultStatus { 
    
    /**
     * MsnObject has been retrieved successfuly.
     */
    GOOD, 
    
    /**
     * There has been a file access error.
     */
    FILE_ACCESS_ERROR, 
    
    /**
     * There has been a protocol error.
     */
    PROTOCOL_ERROR, 
    
    /**
     * Thre has been an unknown error.
     */
    UNKNOWN }
  

  /**
   * Notify about the MsnObject finalization retrieval.
   * 
   * @param messenger Instance of the messenger we are working with. 
   * @param worker MsnObject retrieved.
   * @param msnObject Instance of the MsnObject retrieved.
   * @param result Type of result for the process.
     * @param resultBytes Bytes of data returned.
   * @param context Context for the result. For FILE_ACCESS_ERROR and INKNOWN, 
   * it is the exception instance for the error. For PROTOCOL_ERROR, it is an
   * instance of Integer with the P2P flag field value.
   */
  public void notifyMsnObjectRetrieval(MsnMessenger messenger,
                                   DisplayPictureRetrieveWorker worker,
                                   MsnObject msnObject,
                                   ResultStatus result,
                                         byte[] resultBytes,
                                   Object context);

}
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