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/*
* 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.Car.CarServiceLifecycleListener;
import android.car.drivingstate.CarDrivingStateEvent;
import android.car.drivingstate.CarDrivingStateManager;
import android.car.drivingstate.CarDrivingStateManager.CarDrivingStateEventListener;
import android.content.Context;
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;
}
CarDrivingStateEvent currentState = mDrivingStateManager.getCurrentCarDrivingState();
if (currentState != null) {
return currentState.eventValue == CarDrivingStateEvent.DRIVING_STATE_IDLING
|| currentState.eventValue == CarDrivingStateEvent.DRIVING_STATE_MOVING;
}
return false; // Default to false.
}
/**
* Establishes connection with the Car service.
*/
public void connectToCarService() {
mCar = Car.createCar(mContext, /* handler= */ null, Car.CAR_WAIT_TIMEOUT_DO_NOT_WAIT,
mCarServiceLifecycleListener);
}
private final CarServiceLifecycleListener mCarServiceLifecycleListener = (car, ready) -> {
if (!ready) {
return;
}
logD("Car Service connected");
mDrivingStateManager = (CarDrivingStateManager) car.getCarManager(
Car.CAR_DRIVING_STATE_SERVICE);
if (mDrivingStateManager != null) {
mDrivingStateManager.registerListener(mDrivingStateHandler);
mDrivingStateHandler.onDrivingStateChanged(
mDrivingStateManager.getCurrentCarDrivingState());
} else {
Log.e(TAG, "CarDrivingStateService service not available");
}
};
private void logD(String message) {
if (Log.isLoggable(TAG, Log.DEBUG)) {
Log.d(TAG, message);
}
}
}
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