1 /* 2 * Copyright 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.car.settings.bluetooth; 18 19 import static android.os.UserManager.DISALLOW_BLUETOOTH; 20 21 import android.bluetooth.BluetoothAdapter; 22 import android.car.drivingstate.CarUxRestrictions; 23 import android.content.Context; 24 import android.content.pm.PackageManager; 25 import android.os.UserManager; 26 27 import androidx.annotation.CallSuper; 28 import androidx.annotation.VisibleForTesting; 29 import androidx.preference.Preference; 30 31 import com.android.car.settings.common.FragmentController; 32 import com.android.car.settings.common.PreferenceController; 33 import com.android.settingslib.bluetooth.BluetoothCallback; 34 import com.android.settingslib.bluetooth.CachedBluetoothDevice; 35 import com.android.settingslib.bluetooth.LocalBluetoothManager; 36 37 /** 38 * Abstract {@link PreferenceController} that listens to {@link BluetoothCallback} events and 39 * exposes the interface methods for override. It implements a default 40 * {@link #getAvailabilityStatus()} which is {@link #AVAILABLE} when the system supports 41 * Bluetooth, the current user is not restricted by {@link DISALLOW_BLUETOOTH}, and the default 42 * Bluetooth adapter is enabled. 43 * 44 * @param <V> the upper bound on the type of {@link Preference} on which the controller expects 45 * to operate. 46 */ 47 public abstract class BluetoothPreferenceController<V extends Preference> extends 48 PreferenceController<V> implements BluetoothCallback { 49 50 protected final LocalBluetoothManager mBluetoothManager; 51 private final UserManager mUserManager; 52 BluetoothPreferenceController(Context context, String preferenceKey, FragmentController fragmentController, CarUxRestrictions uxRestrictions)53 public BluetoothPreferenceController(Context context, String preferenceKey, 54 FragmentController fragmentController, CarUxRestrictions uxRestrictions) { 55 super(context, preferenceKey, fragmentController, uxRestrictions); 56 mBluetoothManager = BluetoothUtils.getLocalBtManager(context); 57 mUserManager = context.getSystemService(UserManager.class); 58 } 59 60 @VisibleForTesting BluetoothPreferenceController(Context context, String preferenceKey, FragmentController fragmentController, CarUxRestrictions uxRestrictions, LocalBluetoothManager localBluetoothManager, UserManager userManager)61 BluetoothPreferenceController(Context context, String preferenceKey, 62 FragmentController fragmentController, CarUxRestrictions uxRestrictions, 63 LocalBluetoothManager localBluetoothManager, UserManager userManager) { 64 super(context, preferenceKey, fragmentController, uxRestrictions); 65 mBluetoothManager = localBluetoothManager; 66 mUserManager = userManager; 67 } 68 69 /** Returns a {@link UserManager} retrieved with the controller context. **/ getUserManager()70 protected final UserManager getUserManager() { 71 return mUserManager; 72 } 73 74 /** 75 * Returns a {@link LocalBluetoothManager} retrieved with the controller context. This is 76 * not {@code null} unless {@link #getAvailabilityStatus()} returns 77 * {@link #UNSUPPORTED_ON_DEVICE}. 78 */ getBluetoothManager()79 protected final LocalBluetoothManager getBluetoothManager() { 80 return mBluetoothManager; 81 } 82 83 @Override getDefaultAvailabilityStatus()84 protected int getDefaultAvailabilityStatus() { 85 if (!getContext().getPackageManager().hasSystemFeature(PackageManager.FEATURE_BLUETOOTH)) { 86 return UNSUPPORTED_ON_DEVICE; 87 } 88 if (mUserManager.hasUserRestriction(DISALLOW_BLUETOOTH)) { 89 return DISABLED_FOR_PROFILE; 90 } 91 return BluetoothAdapter.getDefaultAdapter().isEnabled() ? AVAILABLE 92 : CONDITIONALLY_UNAVAILABLE; 93 } 94 95 @Override 96 @CallSuper onStartInternal()97 protected void onStartInternal() { 98 mBluetoothManager.getEventManager().registerCallback(this); 99 } 100 101 @Override 102 @CallSuper onStopInternal()103 protected void onStopInternal() { 104 mBluetoothManager.getEventManager().unregisterCallback(this); 105 } 106 107 @Override 108 @CallSuper onBluetoothStateChanged(int bluetoothState)109 public void onBluetoothStateChanged(int bluetoothState) { 110 refreshUi(); 111 } 112 113 @Override onScanningStateChanged(boolean started)114 public void onScanningStateChanged(boolean started) { 115 } 116 117 @Override onDeviceAdded(CachedBluetoothDevice cachedDevice)118 public void onDeviceAdded(CachedBluetoothDevice cachedDevice) { 119 } 120 121 @Override onDeviceDeleted(CachedBluetoothDevice cachedDevice)122 public void onDeviceDeleted(CachedBluetoothDevice cachedDevice) { 123 } 124 125 @Override onDeviceBondStateChanged(CachedBluetoothDevice cachedDevice, int bondState)126 public void onDeviceBondStateChanged(CachedBluetoothDevice cachedDevice, int bondState) { 127 } 128 129 @Override onConnectionStateChanged(CachedBluetoothDevice cachedDevice, int state)130 public void onConnectionStateChanged(CachedBluetoothDevice cachedDevice, int state) { 131 } 132 133 @Override onActiveDeviceChanged(CachedBluetoothDevice activeDevice, int bluetoothProfile)134 public void onActiveDeviceChanged(CachedBluetoothDevice activeDevice, int bluetoothProfile) { 135 } 136 137 @Override onAudioModeChanged()138 public void onAudioModeChanged() { 139 } 140 } 141