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/*
* 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) {
update()
}
}
override fun onUpdate() {
UsersLiveData.value?.let { users ->
val getLiveData = { user: UserHandle -> UserPackageInfosLiveData[user] }
setSourcesToDifference(users, userPackageInfosLiveDatas, getLiveData)
}
if (!userPackageInfosLiveDatas.all { it.value.isInitialized }) {
return
}
for ((user, userPackageInfosLiveData) in userPackageInfosLiveDatas) {
val packageInfos = userPackageInfosLiveData.value
if (packageInfos == null) {
userPackageInfos.remove(user)
} else {
userPackageInfos[user] = packageInfos
}
}
value = userPackageInfos.toMap()
}
}
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