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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.ui.model
import android.app.Application
import android.os.Bundle
import androidx.fragment.app.Fragment
import androidx.lifecycle.AndroidViewModel
import androidx.lifecycle.ViewModel
import androidx.lifecycle.ViewModelProvider
import androidx.navigation.fragment.findNavController
import com.android.permissioncontroller.R
import com.android.permissioncontroller.permission.data.PermGroupsPackagesLiveData
import com.android.permissioncontroller.permission.data.PermGroupsPackagesUiInfoLiveData
import com.android.permissioncontroller.permission.data.SmartUpdateMediatorLiveData
import com.android.permissioncontroller.permission.utils.navigateSafe
/**
* A ViewModel for the ManageCustomPermissionsFragment. Provides a LiveData which watches over all
* custom permission groups, and sends async updates when these groups have changes.
*
* @param app The current application of the fragment
*/
class ManageCustomPermissionsViewModel(private val app: Application) : AndroidViewModel(app) {
val uiDataLiveData = PermGroupsPackagesUiInfoLiveData(app, UsedCustomPermGroupNamesLiveData())
/**
* Navigate to a Permission Apps fragment
*
* @param fragment The fragment we are navigating from
* @param args The args to pass to the new fragment
*/
fun showPermissionApps(fragment: Fragment, args: Bundle) {
fragment.findNavController().navigateSafe(R.id.manage_to_perm_apps, args)
}
}
/**
* Factory for a ManageCustomPermissionsViewModel
*
* @param app The current application of the fragment
*/
class ManageCustomPermissionsViewModelFactory(private val app: Application) :
ViewModelProvider.Factory {
override fun <T : ViewModel> create(modelClass: Class<T>): T {
@Suppress("UNCHECKED_CAST") return ManageCustomPermissionsViewModel(app) as T
}
}
/**
* A LiveData which tracks the names of Custom Permission Groups which are used by at least one
* package. This includes single-permission permission groups, as well as the Undefined permission
* group, and any other permission groups not defined by the system.
*/
class UsedCustomPermGroupNamesLiveData : SmartUpdateMediatorLiveData<List<String>>() {
init {
addSource(PermGroupsPackagesLiveData.get(customGroups = true)) { value = it.keys.toList() }
}
override fun onUpdate() {
/* No op override */
}
}
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