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.support.annotation.VisibleForTesting; 23 import android.support.v7.preference.Preference; 24 import android.support.v7.preference.PreferenceGroup; 25 import android.support.v7.preference.PreferenceScreen; 26 import com.android.settings.bluetooth.AvailableMediaBluetoothDeviceUpdater; 27 import com.android.settings.bluetooth.BluetoothDeviceUpdater; 28 import com.android.settings.bluetooth.Utils; 29 import com.android.settings.core.BasePreferenceController; 30 import com.android.settings.dashboard.DashboardFragment; 31 import com.android.settings.R; 32 import com.android.settingslib.bluetooth.BluetoothCallback; 33 import com.android.settingslib.bluetooth.CachedBluetoothDevice; 34 import com.android.settingslib.bluetooth.LocalBluetoothManager; 35 import com.android.settingslib.core.lifecycle.LifecycleObserver; 36 import com.android.settingslib.core.lifecycle.events.OnStart; 37 import com.android.settingslib.core.lifecycle.events.OnStop; 38 39 /** 40 * Controller to maintain the {@link android.support.v7.preference.PreferenceGroup} for all 41 * available media devices. It uses {@link DevicePreferenceCallback} 42 * to add/remove {@link Preference} 43 */ 44 public class AvailableMediaDeviceGroupController extends BasePreferenceController 45 implements LifecycleObserver, OnStart, OnStop, DevicePreferenceCallback, BluetoothCallback { 46 47 private static final String KEY = "available_device_list"; 48 49 @VisibleForTesting 50 PreferenceGroup mPreferenceGroup; 51 private BluetoothDeviceUpdater mBluetoothDeviceUpdater; 52 private final LocalBluetoothManager mLocalBluetoothManager; 53 AvailableMediaDeviceGroupController(Context context)54 public AvailableMediaDeviceGroupController(Context context) { 55 super(context, KEY); 56 mLocalBluetoothManager = Utils.getLocalBtManager(mContext); 57 } 58 59 @Override onStart()60 public void onStart() { 61 mBluetoothDeviceUpdater.registerCallback(); 62 mLocalBluetoothManager.getEventManager().registerCallback(this); 63 } 64 65 @Override onStop()66 public void onStop() { 67 mBluetoothDeviceUpdater.unregisterCallback(); 68 mLocalBluetoothManager.getEventManager().unregisterCallback(this); 69 } 70 71 @Override displayPreference(PreferenceScreen screen)72 public void displayPreference(PreferenceScreen screen) { 73 super.displayPreference(screen); 74 if (isAvailable()) { 75 mPreferenceGroup = (PreferenceGroup) screen.findPreference(KEY); 76 mPreferenceGroup.setVisible(false); 77 updateTitle(); 78 mBluetoothDeviceUpdater.setPrefContext(screen.getContext()); 79 mBluetoothDeviceUpdater.forceUpdate(); 80 } 81 } 82 83 @Override getAvailabilityStatus()84 public int getAvailabilityStatus() { 85 return mContext.getPackageManager().hasSystemFeature(PackageManager.FEATURE_BLUETOOTH) 86 ? AVAILABLE 87 : UNSUPPORTED_ON_DEVICE; 88 } 89 90 @Override getPreferenceKey()91 public String getPreferenceKey() { 92 return KEY; 93 } 94 95 @Override onDeviceAdded(Preference preference)96 public void onDeviceAdded(Preference preference) { 97 if (mPreferenceGroup.getPreferenceCount() == 0) { 98 mPreferenceGroup.setVisible(true); 99 } 100 mPreferenceGroup.addPreference(preference); 101 } 102 103 @Override onDeviceRemoved(Preference preference)104 public void onDeviceRemoved(Preference preference) { 105 mPreferenceGroup.removePreference(preference); 106 if (mPreferenceGroup.getPreferenceCount() == 0) { 107 mPreferenceGroup.setVisible(false); 108 } 109 } 110 init(DashboardFragment fragment)111 public void init(DashboardFragment fragment) { 112 mBluetoothDeviceUpdater = new AvailableMediaBluetoothDeviceUpdater(fragment.getContext(), 113 fragment, AvailableMediaDeviceGroupController.this); 114 } 115 116 @VisibleForTesting setBluetoothDeviceUpdater(BluetoothDeviceUpdater bluetoothDeviceUpdater)117 public void setBluetoothDeviceUpdater(BluetoothDeviceUpdater bluetoothDeviceUpdater) { 118 mBluetoothDeviceUpdater = bluetoothDeviceUpdater; 119 } 120 121 @Override onBluetoothStateChanged(int bluetoothState)122 public void onBluetoothStateChanged(int bluetoothState) { 123 // do nothing 124 } 125 126 @Override onScanningStateChanged(boolean started)127 public void onScanningStateChanged(boolean started) { 128 // do nothing 129 } 130 131 @Override onDeviceAdded(CachedBluetoothDevice cachedDevice)132 public void onDeviceAdded(CachedBluetoothDevice cachedDevice) { 133 // do nothing 134 } 135 136 @Override onDeviceDeleted(CachedBluetoothDevice cachedDevice)137 public void onDeviceDeleted(CachedBluetoothDevice cachedDevice) { 138 // do nothing 139 } 140 141 @Override onDeviceBondStateChanged(CachedBluetoothDevice cachedDevice, int bondState)142 public void onDeviceBondStateChanged(CachedBluetoothDevice cachedDevice, int bondState) { 143 // do nothing 144 } 145 146 @Override onConnectionStateChanged(CachedBluetoothDevice cachedDevice, int state)147 public void onConnectionStateChanged(CachedBluetoothDevice cachedDevice, int state) { 148 // do nothing 149 } 150 151 @Override onActiveDeviceChanged(CachedBluetoothDevice activeDevice, int bluetoothProfile)152 public void onActiveDeviceChanged(CachedBluetoothDevice activeDevice, int bluetoothProfile) { 153 // do nothing 154 } 155 156 @Override onAudioModeChanged()157 public void onAudioModeChanged() { 158 updateTitle(); 159 } 160 updateTitle()161 private void updateTitle() { 162 if (isAudioModeOngoingCall(mContext)) { 163 // in phone call 164 mPreferenceGroup. 165 setTitle(mContext.getString(R.string.connected_device_available_call_title)); 166 } else { 167 // without phone call 168 mPreferenceGroup. 169 setTitle(mContext.getString(R.string.connected_device_available_media_title)); 170 } 171 } 172 } 173