ExampleController.java

/*
 * Copyright (c) 2016 - Bernie 2016, Inc.
 *
 * 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.berniesanders.fieldthebern.controllers;

/**
 *
 */

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import dagger.Module;
import dagger.Provides;
import javax.inject.Singleton;
import mortar.Presenter;
import mortar.bundler.BundleService;

import static mortar.bundler.BundleService.getBundleService;

/**
 * Provides a way to coordinate with the MainActivity
 */
public class ExampleController extends Presenter<ExampleController.Activity> {

  public interface Activity {
    AppCompatActivity getActivity();
  }

  /**
   * package private
   * only instantiated via the ExampleControllerModule dagger module inner class below
   */
  ExampleController() {
  }

  @Override
  public void onLoad(Bundle savedInstanceState) {
    //you can safely call getView() to get the activity here
  }

  @Override
  public void dropView(Activity view) {
    //after this it is no longer safe to call getView()
    super.dropView(view);
  }

  /**
   * required by mortar
   */
  @Override
  protected BundleService extractBundleService(Activity activity) {
    return getBundleService(activity.getActivity());
  }

  /**
   * Used to inject this singleton presenter/controller onto the Activity.
   * Add the module to the MainComponent, then create a field on the MainActivity
   * Then you can add the "service" to access this presenter/controller
   * in MainActivity.initActivityScope()
   */
  @Module
  public static class ExampleControllerModule {

    @Provides
    @Singleton
    ExampleController provideTemplateController() {
      return new ExampleController();
    }
  }
}