1 /*
2  * Copyright (C) 2023 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.settings.network.telephony
18 
19 import android.content.Context
20 import androidx.preference.Preference
21 import androidx.preference.PreferenceScreen
22 import com.android.settings.core.BasePreferenceController
23 
24 /**
25  * Preference controller for "Calling" category
26  */
27 class CallingPreferenceCategoryController(context: Context, key: String) :
28     BasePreferenceController(context, key) {
29 
30     private val visibleChildren = mutableSetOf<String>()
31     private var preference: Preference? = null
32 
getAvailabilityStatusnull33     override fun getAvailabilityStatus() = AVAILABLE
34 
35     override fun displayPreference(screen: PreferenceScreen) {
36         // Not call super here, to avoid preference.isVisible changed unexpectedly
37         preference = screen.findPreference(preferenceKey)
38     }
39 
updateChildVisiblenull40     fun updateChildVisible(key: String, isVisible: Boolean) {
41         if (isVisible) {
42             visibleChildren.add(key)
43         } else {
44             visibleChildren.remove(key)
45         }
46         preference?.isVisible = visibleChildren.isNotEmpty()
47     }
48 }
49