content: /*
   * Copyright (c) 2017. André Mion
   *
   * 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.andremion.heroes.ui;
  
  import android.app.Activity;
  import android.app.Fragment;
  import android.content.Context;
  import android.support.annotation.CallSuper;
  import android.support.annotation.NonNull;
  
  public abstract class AbsPresenter<V> {
  
      protected V mView;
  
      protected AbsPresenter() {
      }
  
      /**
       * Call this method in {@link Activity#onCreate}
       * or {@link Fragment#onAttach(Context)} to attach the MVP View object
       */
      @CallSuper
      public void attachView(@NonNull V view) {
          mView = view;
      }
  
      /**
       * Call this method in {@link Activity#onDestroy()}
       * or {@link Fragment#onDetach()} to detach the MVP View object
       */
      @CallSuper
      public void detachView() {
          mView = null;
      }
  
      /**
       * Check if the view is attached.
       * This checking is only necessary when returning from an asynchronous call
       */
      protected final boolean isViewAttached() {
          return mView != null;
      }
  
  }
  