| /* |
| * Copyright (C) 2020 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.permissioncontroller.permission.data |
| |
| import android.app.Application |
| import android.app.usage.UsageStats |
| import android.app.usage.UsageStatsManager |
| import android.app.usage.UsageStatsManager.INTERVAL_MONTHLY |
| import android.os.UserHandle |
| import com.android.permissioncontroller.PermissionControllerApplication |
| import com.android.permissioncontroller.permission.utils.Utils |
| import kotlinx.coroutines.Job |
| |
| /** |
| * A livedata which tracks the usage stats for all packages for all users in a given length of time. |
| * |
| * @param app The current application |
| * @param searchTimeMs The length of time, in milliseconds, that this LiveData will track. The time |
| * will start when the liveData is loaded, and extend backwards searchTimeMs milliseconds. |
| * @param interval The interval to measure in. Default is monthly. |
| */ |
| class UsageStatsLiveData private constructor( |
| private val app: Application, |
| private val searchTimeMs: Long, |
| private val interval: Int = INTERVAL_MONTHLY |
| ) : SmartAsyncMediatorLiveData<Map<UserHandle, List<UsageStats>>>() { |
| |
| init { |
| addSource(UsersLiveData) { |
| update() |
| } |
| } |
| |
| override suspend fun loadDataAndPostValue(job: Job) { |
| if (!UsersLiveData.isInitialized) { |
| return |
| } |
| |
| val now = System.currentTimeMillis() |
| val userMap = mutableMapOf<UserHandle, List<UsageStats>>() |
| for (user in UsersLiveData.value!!) { |
| // If the user is not enabled, or if the user is a managed profile, and this is not an |
| // android TV (where parental control accounts are managed profiles), do not get stats. |
| if (Utils.isUserDisabledOrWorkProfile(user)) { |
| continue |
| } |
| val statsManager = Utils.getUserContext(app, user).getSystemService( |
| UsageStatsManager::class.java)!! |
| statsManager.queryUsageStats(interval, now - searchTimeMs, now)?.let { stats -> |
| userMap[user] = stats |
| } |
| } |
| |
| postValue(userMap) |
| } |
| |
| companion object : DataRepository<Pair<Long, Int>, UsageStatsLiveData>() { |
| override fun newValue(key: Pair<Long, Int>): UsageStatsLiveData { |
| return UsageStatsLiveData(PermissionControllerApplication.get(), key.first, key.second) |
| } |
| |
| operator fun get(interval: Long): UsageStatsLiveData { |
| return get(interval to INTERVAL_MONTHLY) |
| } |
| } |
| } |