content: /*
   * Copyright (C) 2010 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 java.lang.String;
  
  import android.annotation.SystemApi;
  import android.app.backup.RestoreSet;
  
  /**
   * Callback class for receiving progress reports during a restore operation.  These
   * methods will all be called on your application's main thread.
   */
  public abstract class RestoreObserver {
      /**
       * Supply a list of the restore datasets available from the current transport.  This
       * method is invoked as a callback following the application's use of the
       * {@link android.app.backup.IRestoreSession.getAvailableRestoreSets} method.
       *
       * @param result An array of {@link android.app.backup.RestoreSet RestoreSet} objects
       *   describing all of the available datasets that are candidates for restoring to
       *   the current device.  If no applicable datasets exist, {@code result} will be
       *   {@code null}.
       *
       * @hide
       */
      @SystemApi
      public void restoreSetsAvailable(RestoreSet[] result) {
      }
  
      /**
       * The restore operation has begun.
       *
       * @param numPackages The total number of packages being processed in
       *   this restore operation.
       */
      public void restoreStarting(int numPackages) {
      }
  
      /**
       * An indication of which package is being restored currently, out of the
       * total number provided in the {@link #restoreStarting(int)} callback.  This method
       * is not guaranteed to be called: if the transport is unable to obtain
       * data for one or more of the requested packages, no onUpdate() call will
       * occur for those packages.
       *
       * @param nowBeingRestored The index, between 1 and the numPackages parameter
       *   to the {@link #restoreStarting(int)} callback, of the package now being
       *   restored.  This may be non-monotonic; it is intended purely as a rough
       *   indication of the backup manager's progress through the overall restore process.
       * @param currentPackage The name of the package now being restored.
       */
      public void onUpdate(int nowBeingRestored, String currentPackage) {
      }
  
      /**
       * The restore process has completed.  This method will always be called,
       * even if no individual package restore operations were attempted.
       *
       * @param error Zero on success; a nonzero error code if the restore operation
       *   as a whole failed.
       */
      public void restoreFinished(int error) {
      }
  }
  