1 /* 2 * Copyright (C) 2020 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.car.carlauncher.homescreen.assistive; 18 19 import android.view.View; 20 21 import com.android.car.carlauncher.homescreen.CardPresenter; 22 import com.android.car.carlauncher.homescreen.HomeCardInterface; 23 24 import java.util.List; 25 26 /** 27 * The {@link CardPresenter} for an assistive card. 28 */ 29 public class AssistiveCardPresenter extends CardPresenter { 30 31 private HomeCardInterface.Model mCurrentModel; 32 private List<HomeCardInterface.Model> mModels; 33 34 @Override setModels(List<HomeCardInterface.Model> models)35 public void setModels(List<HomeCardInterface.Model> models) { 36 mModels = models; 37 } 38 39 /** 40 * Called when the View is created 41 */ 42 @Override onViewCreated()43 public void onViewCreated() { 44 for (HomeCardInterface.Model model : mModels) { 45 model.setPresenter(this); 46 model.onCreate(getFragment().requireContext()); 47 } 48 } 49 50 /** 51 * Called when the View is destroyed 52 */ 53 @Override onViewDestroyed()54 public void onViewDestroyed() { 55 if (mModels != null) { 56 for (HomeCardInterface.Model model : mModels) { 57 model.onDestroy(getFragment().requireContext()); 58 } 59 } 60 } 61 62 /** 63 * Called when the View is clicked 64 */ 65 @Override onViewClicked(View v)66 public void onViewClicked(View v) { 67 mCurrentModel.onClick(v); 68 } 69 70 /** 71 * Called when a Model is updated. 72 */ 73 @Override onModelUpdated(HomeCardInterface.Model model)74 public void onModelUpdated(HomeCardInterface.Model model) { 75 if (model.getCardHeader() == null) { 76 if (mCurrentModel != null && model.getClass() == mCurrentModel.getClass()) { 77 if (mModels != null) { 78 // Check if any other models have content to display 79 for (HomeCardInterface.Model candidate : mModels) { 80 if (candidate.getCardHeader() != null) { 81 mCurrentModel = candidate; 82 super.onModelUpdated(candidate); 83 return; 84 } 85 } 86 } 87 } else { 88 // Otherwise, another model is already on display, 89 return; 90 } 91 } 92 mCurrentModel = model; 93 super.onModelUpdated(model); 94 } 95 } 96