| /* |
| * 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.os.UserHandle |
| import com.android.permissioncontroller.permission.data.AllPackageInfosLiveData.addSource |
| import com.android.permissioncontroller.permission.model.livedatatypes.LightPackageInfo |
| |
| /** |
| * A LiveData which tracks the PackageInfos of all of the packages in the system, for all users. |
| */ |
| object AllPackageInfosLiveData : |
| SmartUpdateMediatorLiveData<Map<UserHandle, List<LightPackageInfo>>>() { |
| |
| private val userPackageInfosLiveDatas = mutableMapOf<UserHandle, UserPackageInfosLiveData>() |
| private val userPackageInfos = mutableMapOf<UserHandle, List<LightPackageInfo>>() |
| |
| init { |
| addSource(UsersLiveData) { |
| updateIfActive() |
| } |
| } |
| |
| override fun onUpdate() { |
| UsersLiveData.value?.let { users -> |
| val getLiveData = { user: UserHandle -> UserPackageInfosLiveData[user] } |
| setSourcesToDifference(users, userPackageInfosLiveDatas, getLiveData) { user -> |
| onUserPackageUpdates(user, userPackageInfosLiveDatas[user]?.value) |
| } |
| } |
| } |
| |
| private fun onUserPackageUpdates(user: UserHandle, packageInfos: List<LightPackageInfo>?) { |
| if (packageInfos == null) { |
| userPackageInfos.remove(user) |
| } else { |
| userPackageInfos[user] = packageInfos |
| } |
| if (userPackageInfosLiveDatas.all { it.value.isInitialized }) { |
| value = userPackageInfos.toMap() |
| } |
| } |
| } |