| /* |
| * 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.userlib.CarUserManagerHelper; |
| import android.content.Context; |
| import android.os.CountDownTimer; |
| import android.util.Log; |
| |
| import androidx.annotation.GuardedBy; |
| |
| import com.android.systemui.R; |
| |
| /** |
| * Wrapper for a countdown timer that switches to Guest if the user has been driving with |
| * the keyguard up for configurable number of seconds. |
| */ |
| public class SwitchToGuestTimer { |
| private static final String TAG = "SwitchToGuestTimer"; |
| |
| // After how many ms CountdownTimer.onTick gets triggered. |
| private static final int COUNTDOWN_INTERVAL_MS = 1000; |
| |
| private final CarUserManagerHelper mCarUserManagerHelper; |
| private final Object mTimerLock; |
| private final String mGuestName; |
| private final int mTimeoutMs; |
| private final boolean mEnabled; |
| |
| @GuardedBy("mTimerLock") |
| private CountDownTimer mSwitchToGuestTimer; |
| |
| public SwitchToGuestTimer(Context context) { |
| mCarUserManagerHelper = new CarUserManagerHelper(context); |
| mGuestName = context.getResources().getString(R.string.car_guest); |
| mTimeoutMs = context.getResources().getInteger(R.integer.driving_on_keyguard_timeout_ms); |
| |
| // Lock prevents multiple timers being started. |
| mTimerLock = new Object(); |
| |
| // If milliseconds to switch is a negative number, the feature is disabled. |
| mEnabled = mTimeoutMs >= 0; |
| } |
| |
| /** |
| * Starts the timer if it's not already running. |
| */ |
| public void start() { |
| if (!mEnabled) { |
| logD("Switching to guest after driving on keyguard is disabled."); |
| return; |
| } |
| |
| synchronized (mTimerLock) { |
| if (mSwitchToGuestTimer != null) { |
| logD("Timer is already running."); |
| return; |
| } |
| |
| mSwitchToGuestTimer = new CountDownTimer(mTimeoutMs, COUNTDOWN_INTERVAL_MS) { |
| @Override |
| public void onTick(long msUntilFinished) { |
| logD("Ms until switching to guest: " + Long.toString(msUntilFinished)); |
| } |
| |
| @Override |
| public void onFinish() { |
| mCarUserManagerHelper.startGuestSession(mGuestName); |
| cancel(); |
| } |
| }; |
| |
| logI("Starting timer"); |
| mSwitchToGuestTimer.start(); |
| } |
| } |
| |
| /** |
| * Cancels the running timer. |
| */ |
| public void cancel() { |
| synchronized (mTimerLock) { |
| if (mSwitchToGuestTimer != null) { |
| logI("Cancelling timer"); |
| mSwitchToGuestTimer.cancel(); |
| mSwitchToGuestTimer = null; |
| } |
| } |
| } |
| |
| private void logD(String message) { |
| if (Log.isLoggable(TAG, Log.DEBUG)) { |
| Log.d(TAG, message); |
| } |
| } |
| |
| private void logI(String message) { |
| if (Log.isLoggable(TAG, Log.INFO)) { |
| Log.i(TAG, message); |
| } |
| } |
| } |