| /* |
| * Copyright (C) 2015 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.car; |
| |
| import android.app.Notification; |
| import android.app.NotificationChannel; |
| import android.app.NotificationManager; |
| import android.content.Context; |
| import android.os.Build; |
| import android.util.Log; |
| import android.util.Slog; |
| |
| import com.android.internal.annotations.GuardedBy; |
| |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| /** |
| * Class used to notify user about CAN bus failure. |
| */ |
| final class CanBusErrorNotifier { |
| private static final String TAG = CarLog.tagFor(CanBusErrorNotifier.class); |
| private static final int NOTIFICATION_ID = 1; |
| private static final boolean IS_RELEASE_BUILD = "user".equals(Build.TYPE); |
| |
| private final Context mContext; |
| private final NotificationManager mNotificationManager; |
| |
| // Contains a set of objects that reported failure. The notification will be hidden only when |
| // this set is empty (all reported objects are in love and peace with the vehicle). |
| @GuardedBy("this") |
| private final Set<Object> mReportedObjects = new HashSet<>(); |
| |
| CanBusErrorNotifier(Context context) { |
| mNotificationManager = (NotificationManager) context.getSystemService( |
| Context.NOTIFICATION_SERVICE); |
| mContext = context; |
| } |
| |
| public void removeFailureReport(Object sender) { |
| setCanBusFailure(false, sender); |
| } |
| |
| public void reportFailure(Object sender) { |
| setCanBusFailure(true, sender); |
| } |
| |
| private void setCanBusFailure(boolean failed, Object sender) { |
| boolean shouldShowNotification; |
| synchronized (this) { |
| boolean changed = failed |
| ? mReportedObjects.add(sender) : mReportedObjects.remove(sender); |
| |
| if (!changed) { |
| return; |
| } |
| |
| shouldShowNotification = !mReportedObjects.isEmpty(); |
| } |
| |
| if (Log.isLoggable(TAG, Log.INFO)) { |
| Slog.i(TAG, "Changing CAN bus failure state to " + shouldShowNotification); |
| } |
| |
| if (shouldShowNotification) { |
| showNotification(); |
| } else { |
| hideNotification(); |
| } |
| } |
| |
| private void showNotification() { |
| if (IS_RELEASE_BUILD) { |
| // TODO: for user, we should show message to take car to the dealer. bug:32096297 |
| return; |
| } |
| Notification notification = |
| new Notification.Builder(mContext, NotificationChannel.DEFAULT_CHANNEL_ID) |
| .setContentTitle(mContext.getString(R.string.car_can_bus_failure)) |
| .setContentText(mContext.getString(R.string.car_can_bus_failure_desc)) |
| .setSmallIcon(R.drawable.car_ic_error) |
| .setOngoing(true) |
| .build(); |
| mNotificationManager.notify(TAG, NOTIFICATION_ID, notification); |
| } |
| |
| private void hideNotification() { |
| if (IS_RELEASE_BUILD) { |
| // TODO: for user, we should show message to take car to the dealer. bug:32096297 |
| return; |
| } |
| mNotificationManager.cancel(TAG, NOTIFICATION_ID); |
| } |
| } |