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      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  */
     16 
     17 package com.android.car;
     18 
     19 import android.app.UiModeManager;
     20 import android.car.Car;
     21 import android.car.CarNotConnectedException;
     22 import android.car.hardware.CarSensorEvent;
     23 import android.car.hardware.CarSensorManager;
     24 import android.car.hardware.ICarSensorEventListener;
     25 import android.content.Context;
     26 import android.util.Log;
     27 
     28 import java.io.PrintWriter;
     29 import java.util.List;
     30 
     31 
     32 public class CarNightService implements CarServiceBase {
     33 
     34     public static final boolean DBG = true;
     35     private int mNightSetting = UiModeManager.MODE_NIGHT_YES;
     36     private final Context mContext;
     37     private final UiModeManager mUiModeManager;
     38     private CarSensorService mCarSensorService;
     39 
     40     private final ICarSensorEventListener mICarSensorEventListener =
     41             new ICarSensorEventListener.Stub() {
     42         @Override
     43         public void onSensorChanged(List<CarSensorEvent> events) {
     44             if (!events.isEmpty()) {
     45                 CarSensorEvent event = events.get(events.size() - 1);
     46                 handleSensorEvent(event);
     47             }
     48         }
     49     };
     50 
     51     public synchronized void handleSensorEvent(CarSensorEvent event) {
     52         if (event == null) {
     53             return;
     54         }
     55         if (event.sensorType == CarSensorManager.SENSOR_TYPE_NIGHT) {
     56             if (event.intValues[0] == 1) {
     57                 mNightSetting = UiModeManager.MODE_NIGHT_YES;
     58             }
     59             else {
     60                 mNightSetting = UiModeManager.MODE_NIGHT_NO;
     61             }
     62             if (mUiModeManager != null) {
     63                 mUiModeManager.setNightMode(mNightSetting);
     64             }
     65         }
     66     }
     67 
     68     CarNightService(Context context) {
     69         mContext = context;
     70         mUiModeManager = (UiModeManager) mContext.getSystemService(Context.UI_MODE_SERVICE);
     71         if (mUiModeManager == null) {
     72             Log.w(CarLog.TAG_SENSOR,"Failed to get UI_MODE_SERVICE");
     73         }
     74     }
     75 
     76     @Override
     77     public synchronized void init() {
     78         if (DBG) {
     79             Log.d(CarLog.TAG_SENSOR,"CAR dayNight init.");
     80         }
     81         mCarSensorService = (CarSensorService) ICarImpl.getInstance(mContext).getCarService(
     82                 Car.SENSOR_SERVICE);
     83         mCarSensorService.registerOrUpdateSensorListener(CarSensorManager.SENSOR_TYPE_NIGHT,
     84                 CarSensorManager.SENSOR_RATE_NORMAL, mICarSensorEventListener);
     85         CarSensorEvent currentState = mCarSensorService.getLatestSensorEvent(
     86                 CarSensorManager.SENSOR_TYPE_NIGHT);
     87         handleSensorEvent(currentState);
     88     }
     89 
     90     @Override
     91     public synchronized void release() {
     92     }
     93 
     94     @Override
     95     public synchronized void dump(PrintWriter writer) {
     96         writer.println("*DAY NIGHT POLICY*");
     97         writer.println("Mode:" + ((mNightSetting == UiModeManager.MODE_NIGHT_YES) ? "night" : "day")
     98                 );
     99     }
    100 }
    101