| /* |
| * Copyright (C) 2018 The Android Open Source Project |
| * |
| * 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.android.systemui.statusbar.car; |
| |
| import android.car.Car; |
| import android.car.CarNotConnectedException; |
| import android.car.drivingstate.CarDrivingStateEvent; |
| import android.car.drivingstate.CarDrivingStateManager; |
| import android.car.drivingstate.CarDrivingStateManager.CarDrivingStateEventListener; |
| import android.content.ComponentName; |
| import android.content.Context; |
| import android.content.ServiceConnection; |
| import android.os.IBinder; |
| import android.util.Log; |
| |
| import androidx.annotation.NonNull; |
| |
| /** |
| * Helper class for connecting to the {@link CarDrivingStateManager} and listening for driving state |
| * changes. |
| */ |
| public class DrivingStateHelper { |
| public static final String TAG = "DrivingStateHelper"; |
| |
| private final Context mContext; |
| private CarDrivingStateManager mDrivingStateManager; |
| private Car mCar; |
| private CarDrivingStateEventListener mDrivingStateHandler; |
| |
| public DrivingStateHelper(Context context, |
| @NonNull CarDrivingStateEventListener drivingStateHandler) { |
| mContext = context; |
| mDrivingStateHandler = drivingStateHandler; |
| } |
| |
| /** |
| * Queries {@link CarDrivingStateManager} for current driving state. Returns {@code true} if car |
| * is idling or moving, {@code false} otherwise. |
| */ |
| public boolean isCurrentlyDriving() { |
| if (mDrivingStateManager == null) { |
| return false; |
| } |
| try { |
| CarDrivingStateEvent currentState = mDrivingStateManager.getCurrentCarDrivingState(); |
| if (currentState != null) { |
| return currentState.eventValue == CarDrivingStateEvent.DRIVING_STATE_IDLING |
| || currentState.eventValue == CarDrivingStateEvent.DRIVING_STATE_MOVING; |
| } |
| } catch (CarNotConnectedException e) { |
| Log.e(TAG, "Cannot determine current driving state. Car not connected", e); |
| } |
| |
| return false; // Default to false. |
| } |
| |
| /** |
| * Establishes connection with the Car service. |
| */ |
| public void connectToCarService() { |
| mCar = Car.createCar(mContext, mCarConnectionListener); |
| if (mCar != null) { |
| mCar.connect(); |
| } |
| } |
| |
| /** |
| * Disconnects from Car service and cleans up listeners. |
| */ |
| public void disconnectFromCarService() { |
| if (mCar != null) { |
| mCar.disconnect(); |
| } |
| } |
| |
| private final ServiceConnection mCarConnectionListener = |
| new ServiceConnection() { |
| public void onServiceConnected(ComponentName name, IBinder service) { |
| logD("Car Service connected"); |
| try { |
| mDrivingStateManager = (CarDrivingStateManager) mCar.getCarManager( |
| Car.CAR_DRIVING_STATE_SERVICE); |
| if (mDrivingStateManager != null) { |
| mDrivingStateManager.registerListener(mDrivingStateHandler); |
| mDrivingStateHandler.onDrivingStateChanged( |
| mDrivingStateManager.getCurrentCarDrivingState()); |
| } else { |
| Log.e(TAG, "CarDrivingStateService service not available"); |
| } |
| } catch (CarNotConnectedException e) { |
| Log.e(TAG, "Car not connected", e); |
| } |
| } |
| |
| @Override |
| public void onServiceDisconnected(ComponentName name) { |
| destroyDrivingStateManager(); |
| } |
| }; |
| |
| private void destroyDrivingStateManager() { |
| try { |
| if (mDrivingStateManager != null) { |
| mDrivingStateManager.unregisterListener(); |
| } |
| } catch (CarNotConnectedException e) { |
| Log.e(TAG, "Error unregistering listeners", e); |
| } |
| } |
| |
| private void logD(String message) { |
| if (Log.isLoggable(TAG, Log.DEBUG)) { |
| Log.d(TAG, message); |
| } |
| } |
| } |