1/* 2 * Copyright (C) 2016 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 */ 16package android.support.car.app.menu.compat; 17 18import android.car.app.menu.RootMenu; 19import android.car.app.menu.SubscriptionCallbacks; 20import android.os.Bundle; 21import android.os.Handler; 22import android.support.annotation.NonNull; 23import android.support.car.app.menu.CarDrawerActivity; 24import android.support.car.app.menu.CarMenu; 25import android.support.car.app.menu.CarMenuCallbacks; 26 27import java.util.ArrayList; 28import java.util.HashMap; 29import java.util.List; 30import java.util.Map; 31 32public class EmbeddedCarMenuCallbacksCompat extends android.car.app.menu.CarMenuCallbacks { 33 34 private final CarMenuCallbacks mCallbacks; 35 private final CarDrawerActivity mActivity; 36 37 // Map of subscribed ids to their respective callbacks. 38 // @GuardedBy("this") 39 private final Map<String, List<SubscriptionCallbacks>> mSubscriptionMap = 40 new HashMap<String, List<SubscriptionCallbacks>>(); 41 42 private final Handler mHandler = new Handler(); 43 44 public EmbeddedCarMenuCallbacksCompat(CarDrawerActivity activity, 45 CarMenuCallbacks callbacks) { 46 mActivity = activity; 47 mCallbacks = callbacks; 48 } 49 50 @Override 51 public RootMenu getRootMenu(Bundle hint) { 52 android.support.car.app.menu.RootMenu rootMenu = mCallbacks.onGetRoot(hint); 53 return new RootMenu(rootMenu.getId(), rootMenu.getBundle()); 54 } 55 56 @Override 57 public void subscribe(String parentId, SubscriptionCallbacks callbacks) { 58 synchronized (this) { 59 if (!mSubscriptionMap.containsKey(parentId)) { 60 mSubscriptionMap.put(parentId, new ArrayList<SubscriptionCallbacks>()); 61 } 62 mSubscriptionMap.get(parentId).add(callbacks); 63 loadResultsForClient(parentId, callbacks); 64 } 65 } 66 67 @Override 68 public void unsubscribe(String parentId, SubscriptionCallbacks callbacks) { 69 synchronized (this) { 70 mSubscriptionMap.get(parentId).remove(callbacks); 71 } 72 } 73 74 @Override 75 public void onCarMenuOpened() { 76 mActivity.setDrawerShowing(true); 77 mCallbacks.onCarMenuOpened(); 78 } 79 80 @Override 81 public void onCarMenuClosed() { 82 mActivity.setDrawerShowing(false); 83 mActivity.restoreSearchBox(); 84 } 85 86 @Override 87 public void onItemClicked(String id) { 88 mCallbacks.onItemClicked(id); 89 mActivity.stopInput(); 90 } 91 92 @Override 93 public boolean onItemLongClicked(String id) { 94 return mCallbacks.onItemLongClicked(id); 95 } 96 97 @Override 98 public boolean onMenuClicked() { 99 100 return mActivity.onMenuClicked(); 101 } 102 103 @Override 104 public void onCarMenuOpening() { 105 mActivity.stopInput(); 106 } 107 108 @Override 109 public void onCarMenuClosing() { 110 mActivity.restoreSearchBox(); 111 } 112 113 public void onChildrenChanged(final String parentId) { 114 synchronized (this) { 115 if (mSubscriptionMap.containsKey(parentId)) { 116 final List<SubscriptionCallbacks> callbacks = new ArrayList<>(); 117 callbacks.addAll(mSubscriptionMap.get(parentId)); 118 mHandler.post(new Runnable() { 119 @Override 120 public void run() { 121 loadResultsForAllClients(parentId, callbacks); 122 } 123 }); 124 } 125 } 126 } 127 128 public void onChildChanged(final String parentId, final Bundle item) { 129 synchronized (this) { 130 if (mSubscriptionMap.containsKey(parentId)) { 131 final List<SubscriptionCallbacks> callbacks = new ArrayList<>(); 132 callbacks.addAll(mSubscriptionMap.get(parentId)); 133 mHandler.post(new Runnable() { 134 @Override 135 public void run() { 136 for (SubscriptionCallbacks callback : callbacks) { 137 callback.onChildChanged(parentId, item); 138 } 139 } 140 }); 141 142 } 143 } 144 } 145 146 private void loadResultsForAllClients(final String parentId, 147 @NonNull final List<SubscriptionCallbacks> callbacks) { 148 final CarMenu result = new CarMenu(mActivity.getResources().getDisplayMetrics()) { 149 @Override 150 protected void onResultReady(List<Bundle> list) { 151 for (SubscriptionCallbacks callback : callbacks) { 152 callback.onChildrenLoaded(parentId, list); 153 } 154 } 155 }; 156 157 mCallbacks.onLoadChildren(parentId, result); 158 if (!result.isDone()) { 159 throw new IllegalStateException("You must either call sendResult() or detach() " + 160 "before returning!"); 161 } 162 } 163 164 private void loadResultsForClient(final String parentId, 165 final SubscriptionCallbacks callbacks) { 166 final CarMenu result = new CarMenu(mActivity.getResources().getDisplayMetrics()) { 167 @Override 168 protected void onResultReady(List<Bundle> list) { 169 callbacks.onChildrenLoaded(parentId, list); 170 } 171 }; 172 173 mCallbacks.onLoadChildren(parentId, result); 174 if (!result.isDone()) { 175 throw new IllegalStateException("You must either call sendResult() or detach() " + 176 "before returning!"); 177 } 178 } 179} 180