content: /*
   * Copyright (C) 2017 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 com.example.android.observability.ui;
  
  import androidx.annotation.NonNull;
  import androidx.lifecycle.ViewModel;
  import androidx.lifecycle.ViewModelProvider;
  import com.example.android.observability.UserDataSource;
  
  /**
   * Factory for ViewModels
   */
  public class ViewModelFactory implements ViewModelProvider.Factory {
  
      private final UserDataSource mDataSource;
  
      public ViewModelFactory(UserDataSource dataSource) {
          mDataSource = dataSource;
      }
  
      @Override
      @NonNull
      public <T extends ViewModel> T create(@NonNull Class<T> modelClass) {
          if (modelClass.isAssignableFrom(UserViewModel.class)) {
              return (T) new UserViewModel(mDataSource);
          }
          //noinspection unchecked
          throw new IllegalArgumentException("Unknown ViewModel class");
      }
  }
  