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.os;
  
  import android.annotation.SystemApi;
  
  /**
   * Callback function for UpdateEngine. Used to keep the caller up to date
   * with progress, so the UI (if any) can be updated.
   *
   * The APIs defined in this class and UpdateEngine class must be in sync with
   * the ones in
   * system/update_engine/binder_bindings/android/os/IUpdateEngine.aidl and
   * system/update_engine/binder_bindings/android/os/IUpdateEngineCallback.aidl.
   *
   * {@hide}
   */
  @SystemApi
  public abstract class UpdateEngineCallback {
  
      /**
       * Invoked when anything changes. The value of {@code status} will
       * be one of the values from {@link UpdateEngine.UpdateStatusConstants},
       * and {@code percent} will be valid [TODO: in which cases?].
       */
      public abstract void onStatusUpdate(int status, float percent);
  
      /**
       * Invoked when the payload has been applied, whether successfully or
       * unsuccessfully. The value of {@code errorCode} will be one of the
       * values from {@link UpdateEngine.ErrorCodeConstants}.
       */
      public abstract void onPayloadApplicationComplete(int errorCode);
  }
  