1 /* 2 * Copyright (C) 2018 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 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.settings.SettingsActivity; 35 import com.android.settings.network.CarrierConfigCache; 36 import com.android.settings.network.apn.ApnSettings; 37 import com.android.settingslib.RestrictedLockUtilsInternal; 38 import com.android.settingslib.RestrictedPreference; 39 import com.android.settingslib.core.lifecycle.LifecycleObserver; 40 import com.android.settingslib.core.lifecycle.events.OnStart; 41 import com.android.settingslib.core.lifecycle.events.OnStop; 42 43 /** 44 * Preference controller for "Apn settings" 45 */ 46 public class ApnPreferenceController extends TelephonyBasePreferenceController implements 47 LifecycleObserver, OnStart, OnStop { 48 49 @VisibleForTesting 50 CarrierConfigCache mCarrierConfigCache; 51 private Preference mPreference; 52 private DpcApnEnforcedObserver mDpcApnEnforcedObserver; 53 ApnPreferenceController(Context context, String key)54 public ApnPreferenceController(Context context, String key) { 55 super(context, key); 56 mCarrierConfigCache = CarrierConfigCache.getInstance(context); 57 mDpcApnEnforcedObserver = new DpcApnEnforcedObserver(new Handler(Looper.getMainLooper())); 58 } 59 60 @Override getAvailabilityStatus(int subId)61 public int getAvailabilityStatus(int subId) { 62 final PersistableBundle carrierConfig = mCarrierConfigCache.getConfigForSubId(subId); 63 final boolean isCdmaApn = MobileNetworkUtils.isCdmaOptions(mContext, subId) 64 && carrierConfig != null 65 && carrierConfig.getBoolean(CarrierConfigManager.KEY_SHOW_APN_SETTING_CDMA_BOOL); 66 final boolean isGsmApn = MobileNetworkUtils.isGsmOptions(mContext, subId) 67 && carrierConfig != null 68 && carrierConfig.getBoolean(CarrierConfigManager.KEY_APN_EXPAND_BOOL); 69 final boolean hideCarrierNetwork = carrierConfig == null 70 || carrierConfig.getBoolean( 71 CarrierConfigManager.KEY_HIDE_CARRIER_NETWORK_SETTINGS_BOOL); 72 73 return !hideCarrierNetwork && (isCdmaApn || isGsmApn) 74 ? AVAILABLE 75 : CONDITIONALLY_UNAVAILABLE; 76 } 77 78 @Override onStart()79 public void onStart() { 80 mDpcApnEnforcedObserver.register(mContext); 81 } 82 83 @Override onStop()84 public void onStop() { 85 mDpcApnEnforcedObserver.unRegister(mContext); 86 } 87 88 @Override displayPreference(PreferenceScreen screen)89 public void displayPreference(PreferenceScreen screen) { 90 super.displayPreference(screen); 91 mPreference = screen.findPreference(getPreferenceKey()); 92 } 93 94 @Override updateState(Preference preference)95 public void updateState(Preference preference) { 96 super.updateState(preference); 97 if (mPreference == null) { 98 return; 99 } 100 ((RestrictedPreference) mPreference).setDisabledByAdmin( 101 MobileNetworkUtils.isDpcApnEnforced(mContext) 102 ? RestrictedLockUtilsInternal.getDeviceOwner(mContext) 103 : null); 104 } 105 106 @Override handlePreferenceTreeClick(Preference preference)107 public boolean handlePreferenceTreeClick(Preference preference) { 108 if (getPreferenceKey().equals(preference.getKey())) { 109 // This activity runs in phone process, we must use intent to start 110 final Intent intent = new Intent(Settings.ACTION_APN_SETTINGS); 111 // This will setup the Home and Search affordance 112 intent.putExtra(SettingsActivity.EXTRA_SHOW_FRAGMENT_AS_SUBSETTING, true); 113 intent.putExtra(ApnSettings.SUB_ID, mSubId); 114 mContext.startActivity(intent); 115 return true; 116 } 117 118 return false; 119 } 120 init(int subId)121 public void init(int subId) { 122 mSubId = subId; 123 } 124 125 @VisibleForTesting setPreference(Preference preference)126 void setPreference(Preference preference) { 127 mPreference = preference; 128 } 129 130 private class DpcApnEnforcedObserver extends ContentObserver { DpcApnEnforcedObserver(Handler handler)131 DpcApnEnforcedObserver(Handler handler) { 132 super(handler); 133 } 134 register(Context context)135 public void register(Context context) { 136 context.getContentResolver().registerContentObserver(ENFORCE_MANAGED_URI, false, this); 137 138 } 139 unRegister(Context context)140 public void unRegister(Context context) { 141 context.getContentResolver().unregisterContentObserver(this); 142 } 143 144 @Override onChange(boolean selfChange)145 public void onChange(boolean selfChange) { 146 updateState(mPreference); 147 } 148 } 149 } 150