content: /*
   * Copyright 2017 Google Inc. All rights reserved.
   *
   * 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 com.example.networksecurity.data;
  
  import android.graphics.Bitmap;
  
  import androidx.annotation.NonNull;
  
  import com.example.networksecurity.model.Post;
  
  public interface DataSource {
  
      interface GetPostsCallback {
          void onPostsLoaded(Post[] posts);
  
          void onPostsNotAvailable(String error, Throwable cause);
      }
  
      interface GetImageCallback {
          void onImageLoaded(Bitmap image);
  
          void onImageNotAvailable(String error);
      }
  
  
      void getPosts(@NonNull GetPostsCallback getPostsCallback);
  
      void getPostImage(@NonNull String url, @NonNull GetImageCallback getImageCallback);
  }
  