1 /* 2 * Copyright (C) 2018 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.systemui.appops; 18 19 import java.util.List; 20 21 /** 22 * Controller to keep track of applications that have requested access to given App Ops. 23 * 24 * It can be subscribed to with callbacks. Additionally, it passes on the information to 25 * NotificationPresenter to be displayed to the user. 26 */ 27 public interface AppOpsController { 28 29 /** 30 * Callback to notify when the state of active AppOps tracked by the controller has changed. 31 * AppOps that are noted will not be notified every time, just when the tracked state changes 32 * between currently in use and not. 33 */ 34 interface Callback { onActiveStateChanged(int code, int uid, String packageName, boolean active)35 void onActiveStateChanged(int code, int uid, String packageName, boolean active); 36 } 37 38 /** 39 * Adds a callback that will get notified when an AppOp of the type the controller tracks 40 * changes 41 * 42 * @param opsCodes App Ops the callback was interested in checking 43 * @param cb Callback to report changes 44 * 45 * @see #removeCallback(int[], Callback) 46 */ addCallback(int[] opsCodes, Callback cb)47 void addCallback(int[] opsCodes, Callback cb); 48 49 /** 50 * Removes a callback from those notifified when an AppOp of the type the controller tracks 51 * changes 52 * 53 * @param opsCodes App Ops the callback is interested in checking 54 * @param cb Callback to stop reporting changes 55 * 56 * @see #addCallback(int[], Callback) 57 */ removeCallback(int[] opsCodes, Callback cb)58 void removeCallback(int[] opsCodes, Callback cb); 59 60 /** 61 * Returns a copy of the list containing all the active AppOps that the controller tracks. 62 * 63 * @return List of active AppOps information 64 */ getActiveAppOps()65 List<AppOpItem> getActiveAppOps(); 66 67 /** 68 * Returns a copy of the list containing all the active AppOps that the controller tracks, for 69 * a given user id. 70 * 71 * @param userId User id to track 72 * 73 * @return List of active AppOps information for that user id 74 */ getActiveAppOpsForUser(int userId)75 List<AppOpItem> getActiveAppOpsForUser(int userId); 76 } 77