content: /*
   * Copyright (C) 2016 The Android Open Source Project
   *
   * 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 android.app.backup;
  
  import android.annotation.SystemApi;
  
  /**
   * Callback class for receiving progress reports during a backup operation.  These
   * methods will all be called on your application's main thread.
   *
   * @hide
   */
  @SystemApi
  public abstract class BackupObserver {
      /**
       * This method could be called several times for packages with full data backup.
       * It will tell how much of backup data is already saved and how much is expected.
       *
       * @param currentBackupPackage The name of the package that now being backuped.
       * @param backupProgress Current progress of backup for the package.
       */
      public void onUpdate(String currentBackupPackage, BackupProgress backupProgress) {
      }
  
      /**
       * The backup of single package has completed.  This method will be called at most one time
       * for each package and could be not called if backup is failed before and
       * backupFinished() is called.
       *
       * @param currentBackupPackage The name of the package that was backuped.
       * @param status Zero on success; a nonzero error code if the backup operation failed.
       */
      public void onResult(String currentBackupPackage, int status) {
      }
  
      /**
       * The backup process has completed.  This method will always be called,
       * even if no individual package backup operations were attempted.
       *
       * @param status Zero on success; a nonzero error code if the backup operation
       *   as a whole failed.
       */
      public void backupFinished(int status) {
      }
  }
  