1 /* 2 * Copyright (C) 2017 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.dialer.assisteddialing; 18 19 import android.annotation.TargetApi; 20 import android.content.Context; 21 import android.os.Build; 22 import android.os.Build.VERSION_CODES; 23 import android.preference.PreferenceManager; 24 import android.support.annotation.NonNull; 25 import android.support.annotation.VisibleForTesting; 26 import android.support.v4.os.UserManagerCompat; 27 import android.telephony.TelephonyManager; 28 import com.android.dialer.common.LogUtil; 29 import com.android.dialer.configprovider.ConfigProvider; 30 import com.android.dialer.configprovider.ConfigProviderBindings; 31 import com.android.dialer.strictmode.StrictModeUtils; 32 33 /** 34 * A Creator for AssistedDialingMediators. 35 * 36 * <p>This helps keep the dependencies required by AssistedDialingMediator for assisted dialing 37 * explicit. 38 */ 39 @TargetApi(VERSION_CODES.N) 40 public final class ConcreteCreator { 41 42 // Floor set at N due to use of Optional. 43 @VisibleForTesting public static final int BUILD_CODE_FLOOR = Build.VERSION_CODES.N; 44 // Ceiling set at P because this feature will ship as part of the framework in Q. 45 @VisibleForTesting public static final int BUILD_CODE_CEILING = 28; 46 47 /** 48 * Creates a new AssistedDialingMediator 49 * 50 * @param telephonyManager The telephony manager used to determine user location. 51 * @param context The context used to determine whether or not a provided number is an emergency 52 * number. 53 * @return An AssistedDialingMediator 54 */ createNewAssistedDialingMediator( @onNull TelephonyManager telephonyManager, @NonNull Context context)55 public static AssistedDialingMediator createNewAssistedDialingMediator( 56 @NonNull TelephonyManager telephonyManager, @NonNull Context context) { 57 58 ConfigProvider configProvider = ConfigProviderBindings.get(context); 59 60 if (telephonyManager == null) { 61 LogUtil.i( 62 "ConcreteCreator.createNewAssistedDialingMediator", "provided TelephonyManager was null"); 63 throw new NullPointerException("Provided TelephonyManager was null"); 64 } 65 if (context == null) { 66 LogUtil.i("ConcreteCreator.createNewAssistedDialingMediator", "provided context was null"); 67 throw new NullPointerException("Provided context was null"); 68 } 69 70 if (!UserManagerCompat.isUserUnlocked(context)) { 71 // To avoid any issues reading preferences, we disable the feature when the user is in a 72 // locked state. 73 LogUtil.i("ConcreteCreator.createNewAssistedDialingMediator", "user is locked"); 74 return new AssistedDialingMediatorStub(); 75 } 76 77 if (!isAssistedDialingEnabled(configProvider)) { 78 LogUtil.i("ConcreteCreator.createNewAssistedDialingMediator", "feature not enabled"); 79 return new AssistedDialingMediatorStub(); 80 } 81 82 if (!PreferenceManager.getDefaultSharedPreferences(context) 83 .getBoolean(context.getString(R.string.assisted_dialing_setting_toggle_key), true)) { 84 LogUtil.i("ConcreteCreator.createNewAssistedDialingMediator", "disabled by local setting"); 85 86 return new AssistedDialingMediatorStub(); 87 } 88 89 Constraints constraints = new Constraints(context, getCountryCodeProvider(configProvider)); 90 return new AssistedDialingMediatorImpl( 91 new LocationDetector( 92 telephonyManager, 93 StrictModeUtils.bypass( 94 () -> 95 PreferenceManager.getDefaultSharedPreferences(context) 96 .getString( 97 context.getString(R.string.assisted_dialing_setting_cc_key), null))), 98 new NumberTransformer(constraints)); 99 } 100 101 /** Returns a boolean indicating whether or not the assisted dialing feature is enabled. */ isAssistedDialingEnabled(@onNull ConfigProvider configProvider)102 public static boolean isAssistedDialingEnabled(@NonNull ConfigProvider configProvider) { 103 if (configProvider == null) { 104 LogUtil.i("ConcreteCreator.isAssistedDialingEnabled", "provided configProvider was null"); 105 throw new NullPointerException("Provided configProvider was null"); 106 } 107 108 return (Build.VERSION.SDK_INT >= BUILD_CODE_FLOOR 109 && Build.VERSION.SDK_INT <= BUILD_CODE_CEILING) 110 && configProvider.getBoolean("assisted_dialing_enabled", false); 111 } 112 113 /** 114 * Returns a CountryCodeProvider responsible for providing countries eligible for assisted Dialing 115 */ getCountryCodeProvider(ConfigProvider configProvider)116 public static CountryCodeProvider getCountryCodeProvider(ConfigProvider configProvider) { 117 if (configProvider == null) { 118 LogUtil.i("ConcreteCreator.getCountryCodeProvider", "provided configProvider was null"); 119 throw new NullPointerException("Provided configProvider was null"); 120 } 121 122 return new CountryCodeProvider(configProvider); 123 } 124 } 125