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 package com.android.settings.connecteddevice; 17 18 import static com.android.settingslib.Utils.isAudioModeOngoingCall; 19 20 import android.content.Context; 21 import android.content.pm.PackageManager; 22 import android.util.Log; 23 24 import androidx.annotation.VisibleForTesting; 25 import androidx.preference.Preference; 26 import androidx.preference.PreferenceGroup; 27 import androidx.preference.PreferenceScreen; 28 29 import com.android.settings.R; 30 import com.android.settings.bluetooth.AvailableMediaBluetoothDeviceUpdater; 31 import com.android.settings.bluetooth.BluetoothDeviceUpdater; 32 import com.android.settings.bluetooth.Utils; 33 import com.android.settings.core.BasePreferenceController; 34 import com.android.settings.dashboard.DashboardFragment; 35 import com.android.settingslib.bluetooth.BluetoothCallback; 36 import com.android.settingslib.bluetooth.LocalBluetoothManager; 37 import com.android.settingslib.core.lifecycle.LifecycleObserver; 38 import com.android.settingslib.core.lifecycle.events.OnStart; 39 import com.android.settingslib.core.lifecycle.events.OnStop; 40 41 /** 42 * Controller to maintain the {@link androidx.preference.PreferenceGroup} for all 43 * available media devices. It uses {@link DevicePreferenceCallback} 44 * to add/remove {@link Preference} 45 */ 46 public class AvailableMediaDeviceGroupController extends BasePreferenceController 47 implements LifecycleObserver, OnStart, OnStop, DevicePreferenceCallback, BluetoothCallback { 48 49 private static final String TAG = "AvailableMediaDeviceGroupController"; 50 private static final String KEY = "available_device_list"; 51 52 @VisibleForTesting 53 PreferenceGroup mPreferenceGroup; 54 @VisibleForTesting 55 LocalBluetoothManager mLocalBluetoothManager; 56 private BluetoothDeviceUpdater mBluetoothDeviceUpdater; 57 AvailableMediaDeviceGroupController(Context context)58 public AvailableMediaDeviceGroupController(Context context) { 59 super(context, KEY); 60 mLocalBluetoothManager = Utils.getLocalBtManager(mContext); 61 } 62 63 @Override onStart()64 public void onStart() { 65 if (mLocalBluetoothManager == null) { 66 Log.e(TAG, "onStart() Bluetooth is not supported on this device"); 67 return; 68 } 69 mBluetoothDeviceUpdater.registerCallback(); 70 mLocalBluetoothManager.getEventManager().registerCallback(this); 71 } 72 73 @Override onStop()74 public void onStop() { 75 if (mLocalBluetoothManager == null) { 76 Log.e(TAG, "onStop() Bluetooth is not supported on this device"); 77 return; 78 } 79 mBluetoothDeviceUpdater.unregisterCallback(); 80 mLocalBluetoothManager.getEventManager().unregisterCallback(this); 81 } 82 83 @Override displayPreference(PreferenceScreen screen)84 public void displayPreference(PreferenceScreen screen) { 85 super.displayPreference(screen); 86 87 mPreferenceGroup = screen.findPreference(KEY); 88 mPreferenceGroup.setVisible(false); 89 90 if (isAvailable()) { 91 updateTitle(); 92 mBluetoothDeviceUpdater.setPrefContext(screen.getContext()); 93 mBluetoothDeviceUpdater.forceUpdate(); 94 } 95 } 96 97 @Override getAvailabilityStatus()98 public int getAvailabilityStatus() { 99 return mContext.getPackageManager().hasSystemFeature(PackageManager.FEATURE_BLUETOOTH) 100 ? AVAILABLE_UNSEARCHABLE 101 : UNSUPPORTED_ON_DEVICE; 102 } 103 104 @Override getPreferenceKey()105 public String getPreferenceKey() { 106 return KEY; 107 } 108 109 @Override onDeviceAdded(Preference preference)110 public void onDeviceAdded(Preference preference) { 111 if (mPreferenceGroup.getPreferenceCount() == 0) { 112 mPreferenceGroup.setVisible(true); 113 } 114 mPreferenceGroup.addPreference(preference); 115 } 116 117 @Override onDeviceRemoved(Preference preference)118 public void onDeviceRemoved(Preference preference) { 119 mPreferenceGroup.removePreference(preference); 120 if (mPreferenceGroup.getPreferenceCount() == 0) { 121 mPreferenceGroup.setVisible(false); 122 } 123 } 124 init(DashboardFragment fragment)125 public void init(DashboardFragment fragment) { 126 mBluetoothDeviceUpdater = new AvailableMediaBluetoothDeviceUpdater(fragment.getContext(), 127 fragment, AvailableMediaDeviceGroupController.this); 128 } 129 130 @VisibleForTesting setBluetoothDeviceUpdater(BluetoothDeviceUpdater bluetoothDeviceUpdater)131 public void setBluetoothDeviceUpdater(BluetoothDeviceUpdater bluetoothDeviceUpdater) { 132 mBluetoothDeviceUpdater = bluetoothDeviceUpdater; 133 } 134 135 @Override onAudioModeChanged()136 public void onAudioModeChanged() { 137 updateTitle(); 138 } 139 updateTitle()140 private void updateTitle() { 141 if (isAudioModeOngoingCall(mContext)) { 142 // in phone call 143 mPreferenceGroup. 144 setTitle(mContext.getString(R.string.connected_device_available_call_title)); 145 } else { 146 // without phone call 147 mPreferenceGroup. 148 setTitle(mContext.getString(R.string.connected_device_available_media_title)); 149 } 150 } 151 } 152