1 /* 2 * Copyright (C) 2019 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.car.developeroptions.network.telephony; 18 19 import static android.provider.Telephony.Carriers.ENFORCE_MANAGED_URI; 20 21 import android.content.Context; 22 import android.content.Intent; 23 import android.database.ContentObserver; 24 import android.os.Handler; 25 import android.os.Looper; 26 import android.os.PersistableBundle; 27 import android.provider.Settings; 28 import android.telephony.CarrierConfigManager; 29 30 import androidx.annotation.VisibleForTesting; 31 import androidx.preference.Preference; 32 import androidx.preference.PreferenceScreen; 33 34 import com.android.car.developeroptions.SettingsActivity; 35 import com.android.car.developeroptions.network.ApnSettings; 36 import com.android.settingslib.RestrictedLockUtilsInternal; 37 import com.android.settingslib.RestrictedPreference; 38 import com.android.settingslib.core.lifecycle.LifecycleObserver; 39 import com.android.settingslib.core.lifecycle.events.OnStart; 40 import com.android.settingslib.core.lifecycle.events.OnStop; 41 42 /** 43 * Preference controller for "Apn settings" 44 */ 45 public class ApnPreferenceController extends TelephonyBasePreferenceController implements 46 LifecycleObserver, OnStart, OnStop { 47 48 @VisibleForTesting 49 CarrierConfigManager mCarrierConfigManager; 50 private Preference mPreference; 51 private DpcApnEnforcedObserver mDpcApnEnforcedObserver; 52 ApnPreferenceController(Context context, String key)53 public ApnPreferenceController(Context context, String key) { 54 super(context, key); 55 mCarrierConfigManager = new CarrierConfigManager(context); 56 mDpcApnEnforcedObserver = new DpcApnEnforcedObserver(new Handler(Looper.getMainLooper())); 57 } 58 59 @Override getAvailabilityStatus(int subId)60 public int getAvailabilityStatus(int subId) { 61 final PersistableBundle carrierConfig = mCarrierConfigManager.getConfigForSubId(subId); 62 final boolean isCdmaApn = MobileNetworkUtils.isCdmaOptions(mContext, subId) 63 && carrierConfig != null 64 && carrierConfig.getBoolean(CarrierConfigManager.KEY_SHOW_APN_SETTING_CDMA_BOOL); 65 final boolean isGsmApn = MobileNetworkUtils.isGsmOptions(mContext, subId) 66 && carrierConfig != null 67 && carrierConfig.getBoolean(CarrierConfigManager.KEY_APN_EXPAND_BOOL); 68 69 return isCdmaApn || isGsmApn 70 ? AVAILABLE 71 : CONDITIONALLY_UNAVAILABLE; 72 } 73 74 @Override onStart()75 public void onStart() { 76 mDpcApnEnforcedObserver.register(mContext); 77 } 78 79 @Override onStop()80 public void onStop() { 81 mDpcApnEnforcedObserver.unRegister(mContext); 82 } 83 84 @Override displayPreference(PreferenceScreen screen)85 public void displayPreference(PreferenceScreen screen) { 86 super.displayPreference(screen); 87 mPreference = screen.findPreference(getPreferenceKey()); 88 } 89 90 @Override updateState(Preference preference)91 public void updateState(Preference preference) { 92 super.updateState(preference); 93 ((RestrictedPreference) mPreference).setDisabledByAdmin( 94 MobileNetworkUtils.isDpcApnEnforced(mContext) 95 ? RestrictedLockUtilsInternal.getDeviceOwner(mContext) 96 : null); 97 } 98 99 @Override handlePreferenceTreeClick(Preference preference)100 public boolean handlePreferenceTreeClick(Preference preference) { 101 if (getPreferenceKey().equals(preference.getKey())) { 102 // This activity runs in phone process, we must use intent to start 103 final Intent intent = new Intent(Settings.ACTION_APN_SETTINGS); 104 // This will setup the Home and Search affordance 105 intent.putExtra(SettingsActivity.EXTRA_SHOW_FRAGMENT_AS_SUBSETTING, true); 106 intent.putExtra(ApnSettings.SUB_ID, mSubId); 107 mContext.startActivity(intent); 108 return true; 109 } 110 111 return false; 112 } 113 init(int subId)114 public void init(int subId) { 115 mSubId = subId; 116 } 117 118 @VisibleForTesting setPreference(Preference preference)119 void setPreference(Preference preference) { 120 mPreference = preference; 121 } 122 123 private class DpcApnEnforcedObserver extends ContentObserver { DpcApnEnforcedObserver(Handler handler)124 DpcApnEnforcedObserver(Handler handler) { 125 super(handler); 126 } 127 register(Context context)128 public void register(Context context) { 129 context.getContentResolver().registerContentObserver(ENFORCE_MANAGED_URI, false, this); 130 131 } 132 unRegister(Context context)133 public void unRegister(Context context) { 134 context.getContentResolver().unregisterContentObserver(this); 135 } 136 137 @Override onChange(boolean selfChange)138 public void onChange(boolean selfChange) { 139 updateState(mPreference); 140 } 141 } 142 } 143