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/*
* Copyright (C) 2019 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.content.pm.PackageManager.GET_PERMISSIONS
import android.content.pm.PackageManager.MATCH_ALL
import android.os.UserHandle
import com.android.permissioncontroller.PermissionControllerApplication
import com.android.permissioncontroller.permission.model.livedatatypes.LightPackageInfo
import kotlinx.coroutines.Job
/**
* A LiveData which tracks all of the packageinfos installed for a given user.
*
* @param app The current application
* @param user The user whose packages are desired
*/
class UserPackageInfosLiveData private constructor(
private val app: Application,
private val user: UserHandle
) : SmartAsyncMediatorLiveData<@kotlin.jvm.JvmSuppressWildcards List<LightPackageInfo>>(),
PackageBroadcastReceiver.PackageBroadcastListener,
PermissionListenerMultiplexer.PermissionChangeCallback {
/**
* Whether or not the permissions in this liveData are out of date
*/
var permChangeStale = false
override fun onPackageUpdate(packageName: String) {
updateAsync()
}
// TODO ntmyren: replace with correctly updating
override fun onPermissionChange() {
permChangeStale = true
for (packageInfo in value ?: emptyList()) {
PermissionListenerMultiplexer.removeCallback(packageInfo.uid, this)
}
}
override fun setValue(newValue: List<LightPackageInfo>?) {
if (newValue != value) {
for (packageInfo in value ?: emptyList()) {
PermissionListenerMultiplexer.removeCallback(packageInfo.uid, this)
}
for (packageInfo in newValue ?: emptyList()) {
PermissionListenerMultiplexer.addCallback(packageInfo.uid, this)
}
}
super.setValue(newValue)
permChangeStale = false
}
/**
* Get all of the packages in the system, organized by user.
*/
override suspend fun loadDataAndPostValue(job: Job) {
if (job.isCancelled) {
return
}
val packageInfos = app.applicationContext.packageManager
.getInstalledPackagesAsUser(GET_PERMISSIONS or MATCH_ALL, user.identifier)
postValue(packageInfos.map { packageInfo -> LightPackageInfo(packageInfo) })
}
override fun onActive() {
super.onActive()
PackageBroadcastReceiver.addAllCallback(this)
for (packageInfo in value ?: emptyList()) {
PermissionListenerMultiplexer.addCallback(packageInfo.uid, this)
}
}
override fun onInactive() {
super.onInactive()
for (packageInfo in value ?: emptyList()) {
PermissionListenerMultiplexer.removeCallback(packageInfo.uid, this)
}
PackageBroadcastReceiver.removeAllCallback(this)
}
/**
* Repository for UserPackageInfosLiveDatas.
* <p> Key value is a UserHandle, value is its corresponding LiveData.
*/
companion object : DataRepository<UserHandle, UserPackageInfosLiveData>() {
override fun newValue(key: UserHandle): UserPackageInfosLiveData {
return UserPackageInfosLiveData(PermissionControllerApplication.get(), key)
}
}
}
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