content: /*******************************************************************************
   * Software Name : RCS IMS Stack
   *
   * Copyright (C) 2010-2016 Orange.
   * Copyright (C) 2014 Sony Mobile Communications Inc.
   *
   * 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.
   *
   * NOTE: This file has been modified by Sony Mobile Communications Inc.
   * Modifications are licensed under the License.
   ******************************************************************************/
  
  package com.gsma.services.rcs.filetransfer;
  
  import com.gsma.services.rcs.contact.ContactId;
  import com.gsma.services.rcs.filetransfer.FileTransfer.ReasonCode;
  import com.gsma.services.rcs.filetransfer.FileTransfer.State;
  
  import java.util.Set;
  
  /**
   * One-To-One File transfer event listener
   * 
   * @author Jean-Marc AUFFRET
   */
  public abstract class OneToOneFileTransferListener {
  
      /**
       * Callback called when the file transfer state/reasonCode is changed.
       * 
       * @param contact Contact ID
       * @param transferId Id of file transfer
       * @param state State of the file transfer
       * @param reasonCode Reason code
       */
      public abstract void onStateChanged(ContactId contact, String transferId, State state,
              ReasonCode reasonCode);
  
      /**
       * Callback called during the file transfer progress.
       * 
       * @param contact Contact ID
       * @param transferId Id of file transfer
       * @param currentSize Current transferred size in bytes
       * @param totalSize Total size to transfer in bytes
       */
      public abstract void onProgressUpdate(ContactId contact, String transferId, long currentSize,
              long totalSize);
  
      /**
       * Callback called when a delete operation completed that resulted in that one or several one to
       * one file transfers was deleted specified by the transferIds parameter corresponding to a
       * specific contact.
       *
       * @param contact Contact ID
       * @param transferIds ids of those deleted file transfers
       */
      public abstract void onDeleted(ContactId contact, Set<String> transferIds);
  }
  