| /* |
| * 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.utils |
| |
| import android.app.Activity |
| import android.app.Application |
| import android.app.Service |
| import android.content.Context |
| import android.content.ContextWrapper |
| import android.content.pm.PackageManager |
| import android.os.Looper |
| import android.os.UserHandle |
| |
| /** |
| * Gets an [Application] instance from a regular [Context] |
| */ |
| val Context.application: Application get() = when (this) { |
| is Activity -> application |
| is Service -> application |
| is ContextWrapper -> baseContext.application |
| else -> applicationContext as Application |
| } |
| |
| /** |
| * Assert that an operation is running on main thread |
| */ |
| fun ensureMainThread() = check(Looper.myLooper() == Looper.getMainLooper()) { |
| "Only meant to be used on the main thread" |
| } |
| |
| /** |
| * A more readable version of [PackageManager.updatePermissionFlags] |
| */ |
| fun PackageManager.updatePermissionFlags( |
| permissionName: String, |
| packageName: String, |
| user: UserHandle, |
| vararg flags: Pair<Int, Boolean> |
| ) { |
| val mask = flags.fold(0, { mask, (flag, _) -> mask or flag }) |
| val value = flags.fold(0, { mask, (flag, flagValue) -> if (flagValue) mask or flag else mask }) |
| updatePermissionFlags(permissionName, packageName, mask, value, user) |
| } |