Brad Stenning | 38b46f8 | 2018-03-27 13:57:29 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2018 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.systemui.statusbar.car.hvac; |
| 18 | |
| 19 | import android.car.Car; |
| 20 | import android.car.CarNotConnectedException; |
| 21 | import android.car.hardware.CarPropertyValue; |
| 22 | import android.car.hardware.hvac.CarHvacManager; |
| 23 | import android.car.hardware.hvac.CarHvacManager.CarHvacEventCallback; |
| 24 | import android.content.ComponentName; |
| 25 | import android.content.Context; |
| 26 | import android.content.ServiceConnection; |
| 27 | import android.os.Handler; |
| 28 | import android.os.IBinder; |
| 29 | import android.util.Log; |
| 30 | |
Brad Stenning | 2f3444f | 2018-04-18 10:28:24 -0700 | [diff] [blame^] | 31 | import java.util.ArrayList; |
Brad Stenning | 38b46f8 | 2018-03-27 13:57:29 -0700 | [diff] [blame] | 32 | import java.util.HashMap; |
| 33 | import java.util.Iterator; |
Brad Stenning | 2f3444f | 2018-04-18 10:28:24 -0700 | [diff] [blame^] | 34 | import java.util.List; |
Brad Stenning | 38b46f8 | 2018-03-27 13:57:29 -0700 | [diff] [blame] | 35 | import java.util.Map; |
| 36 | import java.util.Objects; |
| 37 | |
| 38 | /** |
| 39 | * Manages the connection to the Car service and delegates value changes to the registered |
| 40 | * {@link TemperatureView}s |
| 41 | */ |
| 42 | public class HvacController { |
| 43 | |
| 44 | public static final String TAG = "HvacController"; |
| 45 | public final static int BIND_TO_HVAC_RETRY_DELAY = 5000; |
| 46 | |
| 47 | private Context mContext; |
| 48 | private Handler mHandler; |
| 49 | private Car mCar; |
| 50 | private CarHvacManager mHvacManager; |
Brad Stenning | 2f3444f | 2018-04-18 10:28:24 -0700 | [diff] [blame^] | 51 | private HashMap<HvacKey, List<TemperatureView>> mTempComponents = new HashMap<>(); |
Brad Stenning | 38b46f8 | 2018-03-27 13:57:29 -0700 | [diff] [blame] | 52 | |
| 53 | public HvacController(Context context) { |
| 54 | mContext = context; |
| 55 | } |
| 56 | |
| 57 | /** |
| 58 | * Create connection to the Car service. Note: call backs from the Car service |
| 59 | * ({@link CarHvacManager}) will happen on the same thread this method was called from. |
| 60 | */ |
| 61 | public void connectToCarService() { |
| 62 | mHandler = new Handler(); |
| 63 | mCar = Car.createCar(mContext, mServiceConnection, mHandler); |
| 64 | if (mCar != null) { |
| 65 | // note: this connect call handles the retries |
| 66 | mCar.connect(); |
| 67 | } |
| 68 | } |
| 69 | |
| 70 | /** |
| 71 | * Registers callbacks and initializes components upon connection. |
| 72 | */ |
| 73 | private ServiceConnection mServiceConnection = new ServiceConnection() { |
| 74 | @Override |
| 75 | public void onServiceConnected(ComponentName name, IBinder service) { |
| 76 | try { |
| 77 | service.linkToDeath(mRestart, 0); |
| 78 | mHvacManager = (CarHvacManager) mCar.getCarManager(Car.HVAC_SERVICE); |
| 79 | mHvacManager.registerCallback(mHardwareCallback); |
| 80 | initComponents(); |
| 81 | } catch (Exception e) { |
| 82 | Log.e(TAG, "Failed to correctly connect to HVAC", e); |
| 83 | } |
| 84 | } |
| 85 | |
| 86 | @Override |
| 87 | public void onServiceDisconnected(ComponentName name) { |
| 88 | destroyHvacManager(); |
| 89 | } |
| 90 | }; |
| 91 | |
| 92 | private void destroyHvacManager() { |
| 93 | if (mHvacManager != null) { |
| 94 | mHvacManager.unregisterCallback(mHardwareCallback); |
| 95 | mHvacManager = null; |
| 96 | } |
| 97 | } |
| 98 | |
| 99 | /** |
| 100 | * If the connection to car service goes away then restart it. |
| 101 | */ |
| 102 | private final IBinder.DeathRecipient mRestart = new IBinder.DeathRecipient() { |
| 103 | @Override |
| 104 | public void binderDied() { |
| 105 | Log.d(TAG, "Death of HVAC triggering a restart"); |
| 106 | if (mCar != null) { |
| 107 | mCar.disconnect(); |
| 108 | } |
| 109 | destroyHvacManager(); |
| 110 | mHandler.postDelayed(() -> mCar.connect(), BIND_TO_HVAC_RETRY_DELAY); |
| 111 | } |
| 112 | }; |
| 113 | |
| 114 | /** |
| 115 | * Add component to list and initialize it if the connection is up. |
| 116 | * @param temperatureView |
| 117 | */ |
| 118 | public void addHvacTextView(TemperatureView temperatureView) { |
Brad Stenning | 2f3444f | 2018-04-18 10:28:24 -0700 | [diff] [blame^] | 119 | |
| 120 | HvacKey hvacKey = new HvacKey(temperatureView.getPropertyId(), temperatureView.getAreaId()); |
| 121 | if (!mTempComponents.containsKey(hvacKey)) { |
| 122 | mTempComponents.put(hvacKey, new ArrayList<>()); |
| 123 | } |
| 124 | mTempComponents.get(hvacKey).add(temperatureView); |
Brad Stenning | 38b46f8 | 2018-03-27 13:57:29 -0700 | [diff] [blame] | 125 | initComponent(temperatureView); |
| 126 | } |
| 127 | |
| 128 | private void initComponents() { |
Brad Stenning | 2f3444f | 2018-04-18 10:28:24 -0700 | [diff] [blame^] | 129 | Iterator<Map.Entry<HvacKey, List<TemperatureView>>> iterator = |
Brad Stenning | 38b46f8 | 2018-03-27 13:57:29 -0700 | [diff] [blame] | 130 | mTempComponents.entrySet().iterator(); |
| 131 | while (iterator.hasNext()) { |
Brad Stenning | 2f3444f | 2018-04-18 10:28:24 -0700 | [diff] [blame^] | 132 | Map.Entry<HvacKey, List<TemperatureView>> next = iterator.next(); |
| 133 | List<TemperatureView> temperatureViews = next.getValue(); |
| 134 | for (TemperatureView view : temperatureViews) { |
| 135 | initComponent(view); |
| 136 | } |
Brad Stenning | 38b46f8 | 2018-03-27 13:57:29 -0700 | [diff] [blame] | 137 | } |
| 138 | } |
| 139 | |
| 140 | |
| 141 | private void initComponent(TemperatureView view) { |
| 142 | int id = view.getPropertyId(); |
| 143 | int zone = view.getAreaId(); |
| 144 | try { |
| 145 | if (mHvacManager == null || !mHvacManager.isPropertyAvailable(id, zone)) { |
| 146 | view.setTemp(Float.NaN); |
| 147 | return; |
| 148 | } |
| 149 | view.setTemp(mHvacManager.getFloatProperty(id, zone)); |
| 150 | } catch (CarNotConnectedException e) { |
| 151 | view.setTemp(Float.NaN); |
| 152 | Log.e(TAG, "Failed to get value from hvac service", e); |
| 153 | } |
| 154 | } |
| 155 | |
| 156 | /** |
| 157 | * Callback for getting changes from {@link CarHvacManager} and setting the UI elements to |
| 158 | * match. |
| 159 | */ |
| 160 | private final CarHvacEventCallback mHardwareCallback = new CarHvacEventCallback() { |
| 161 | @Override |
| 162 | public void onChangeEvent(final CarPropertyValue val) { |
| 163 | try { |
| 164 | int areaId = val.getAreaId(); |
| 165 | int propertyId = val.getPropertyId(); |
Brad Stenning | 2f3444f | 2018-04-18 10:28:24 -0700 | [diff] [blame^] | 166 | List<TemperatureView> temperatureViews = mTempComponents.get( |
Brad Stenning | 38b46f8 | 2018-03-27 13:57:29 -0700 | [diff] [blame] | 167 | new HvacKey(propertyId, areaId)); |
Brad Stenning | 2f3444f | 2018-04-18 10:28:24 -0700 | [diff] [blame^] | 168 | if (temperatureViews != null && !temperatureViews.isEmpty()) { |
Brad Stenning | 38b46f8 | 2018-03-27 13:57:29 -0700 | [diff] [blame] | 169 | float value = (float) val.getValue(); |
Brad Stenning | 2f3444f | 2018-04-18 10:28:24 -0700 | [diff] [blame^] | 170 | for (TemperatureView tempView : temperatureViews) { |
| 171 | tempView.setTemp(value); |
| 172 | } |
Brad Stenning | 38b46f8 | 2018-03-27 13:57:29 -0700 | [diff] [blame] | 173 | } // else the data is not of interest |
| 174 | } catch (Exception e) { |
| 175 | // catch all so we don't take down the sysui if a new data type is |
| 176 | // introduced. |
| 177 | Log.e(TAG, "Failed handling hvac change event", e); |
| 178 | } |
| 179 | } |
| 180 | |
| 181 | @Override |
| 182 | public void onErrorEvent(final int propertyId, final int zone) { |
| 183 | Log.d(TAG, "HVAC error event, propertyId: " + propertyId + |
| 184 | " zone: " + zone); |
| 185 | } |
| 186 | }; |
| 187 | |
| 188 | /** |
Brad Stenning | 224b5b3 | 2018-03-28 21:26:57 -0700 | [diff] [blame] | 189 | * Removes all registered components. This is useful if you need to rebuild the UI since |
| 190 | * components self register. |
| 191 | */ |
| 192 | public void removeAllComponents() { |
| 193 | mTempComponents.clear(); |
| 194 | } |
| 195 | |
| 196 | /** |
Brad Stenning | 38b46f8 | 2018-03-27 13:57:29 -0700 | [diff] [blame] | 197 | * Key for storing {@link TemperatureView}s in a hash map |
| 198 | */ |
| 199 | private static class HvacKey { |
| 200 | |
| 201 | int mPropertyId; |
| 202 | int mAreaId; |
| 203 | |
| 204 | public HvacKey(int propertyId, int areaId) { |
| 205 | mPropertyId = propertyId; |
| 206 | mAreaId = areaId; |
| 207 | } |
| 208 | |
| 209 | @Override |
| 210 | public boolean equals(Object o) { |
| 211 | if (this == o) return true; |
| 212 | if (o == null || getClass() != o.getClass()) return false; |
| 213 | HvacKey hvacKey = (HvacKey) o; |
| 214 | return mPropertyId == hvacKey.mPropertyId && |
| 215 | mAreaId == hvacKey.mAreaId; |
| 216 | } |
| 217 | |
| 218 | @Override |
| 219 | public int hashCode() { |
| 220 | return Objects.hash(mPropertyId, mAreaId); |
| 221 | } |
| 222 | } |
| 223 | } |