1 /* 2 * Copyright (C) 2017 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.content.BroadcastReceiver; 20 import android.content.Context; 21 import android.content.Intent; 22 import android.content.IntentFilter; 23 24 import java.util.concurrent.CopyOnWriteArrayList; 25 import java.util.function.BiConsumer; 26 27 /** 28 * This class allows one to register actions they want executed when the vehicle is being shutdown 29 * or rebooted. 30 * 31 * To use this class instantiate it as part of your long-lived service, and then add actions to it. 32 * Actions receive the Context and Intent that go with the shutdown/reboot action, which allows the 33 * action to differentiate the two cases, should it need to do so. 34 * 35 * The actions will run on the UI thread. 36 */ 37 class OnShutdownReboot { 38 private final Object mLock = new Object(); 39 40 private final Context mContext; 41 42 private final BroadcastReceiver mReceiver = new BroadcastReceiver() { 43 @Override 44 public void onReceive(Context context, Intent intent) { 45 for (BiConsumer<Context, Intent> action : mActions) { 46 action.accept(context, intent); 47 } 48 } 49 }; 50 51 private final CopyOnWriteArrayList<BiConsumer<Context, Intent>> mActions = 52 new CopyOnWriteArrayList<>(); 53 OnShutdownReboot(Context context)54 OnShutdownReboot(Context context) { 55 mContext = context; 56 IntentFilter filter = new IntentFilter(); 57 filter.addAction(Intent.ACTION_SHUTDOWN); 58 filter.addAction(Intent.ACTION_REBOOT); 59 mContext.registerReceiver(mReceiver, filter); 60 } 61 addAction(BiConsumer<Context, Intent> action)62 OnShutdownReboot addAction(BiConsumer<Context, Intent> action) { 63 mActions.add(action); 64 return this; 65 } 66 clearActions()67 void clearActions() { 68 mActions.clear(); 69 } 70 } 71