content: /*
   * Copyright 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 <%= appPackage %>.tasks;
  
  import android.content.Context;
  import android.support.annotation.Nullable;
  
  import <%= appPackage %>.TaskViewModel;
  import <%= appPackage %>.data.source.TasksRepository;
  
  import java.lang.ref.WeakReference;
  
  
  /**
   * Listens to user actions from the list item in ({@link TasksFragment}) and redirects them to the
   * Fragment's actions listener.
   */
  public class TaskItemViewModel extends TaskViewModel {
  
      // This navigator is s wrapped in a WeakReference to avoid leaks because it has references to an
      // activity. There's no straightforward way to clear it for each item in a list adapter.
      @Nullable
      private WeakReference<TaskItemNavigator> mNavigator;
  
      public TaskItemViewModel(Context context, TasksRepository tasksRepository) {
          super(context, tasksRepository);
      }
  
      public void setNavigator(TaskItemNavigator navigator) {
          mNavigator = new WeakReference<>(navigator);
      }
  
      /**
       * Called by the Data Binding library when the row is clicked.
       */
      public void taskClicked() {
          String taskId = getTaskId();
          if (taskId == null) {
              // Click happened before task was loaded, no-op.
              return;
          }
          if (mNavigator != null && mNavigator.get() != null) {
              mNavigator.get().openTaskDetails(taskId);
          }
      }
  }
  