content: /*
   * Copyright (C) 2020 - Amir Hossein Aghajari
   *
   * 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.aghajari.emojiview.view;
  
  import android.content.Context;
  import android.graphics.drawable.Drawable;
  import android.os.AsyncTask;
  
  import androidx.annotation.Nullable;
  import androidx.appcompat.widget.AppCompatImageView;
  
  import com.aghajari.emojiview.emoji.Emoji;
  
  import java.lang.ref.WeakReference;
  
  final class ImageLoadingTask extends AsyncTask<Emoji, Void, Drawable> {
      private final WeakReference<AppCompatImageView> imageViewReference;
      private final WeakReference<Context> contextReference;
  
      ImageLoadingTask(final AppCompatImageView imageView) {
          imageViewReference = new WeakReference<>(imageView);
          contextReference = new WeakReference<>(imageView.getContext());
      }
  
      @Override
      protected Drawable doInBackground(final Emoji... emoji) {
          final Context context = contextReference.get();
  
          if (context != null && !isCancelled()) {
              return emoji[0].getDrawable(context);
          }
  
          return null;
      }
  
      @Override
      protected void onPostExecute(@Nullable final Drawable drawable) {
          if (!isCancelled() && drawable != null) {
              final AppCompatImageView imageView = imageViewReference.get();
  
              if (imageView != null) {
                  imageView.setImageDrawable(drawable);
              }
          }
      }
  }
  