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.connecteddevice; 18 19 import android.bluetooth.BluetoothAdapter; 20 import android.content.BroadcastReceiver; 21 import android.content.Context; 22 import android.content.Intent; 23 import android.content.IntentFilter; 24 import android.content.pm.PackageManager; 25 import android.text.BidiFormatter; 26 import android.text.TextUtils; 27 28 import androidx.annotation.VisibleForTesting; 29 import androidx.preference.PreferenceScreen; 30 31 import com.android.settings.R; 32 import com.android.settings.bluetooth.AlwaysDiscoverable; 33 import com.android.settings.bluetooth.Utils; 34 import com.android.settings.core.BasePreferenceController; 35 import com.android.settings.dashboard.DashboardFragment; 36 import com.android.settingslib.bluetooth.LocalBluetoothManager; 37 import com.android.settingslib.core.lifecycle.LifecycleObserver; 38 import com.android.settingslib.core.lifecycle.events.OnPause; 39 import com.android.settingslib.core.lifecycle.events.OnResume; 40 import com.android.settingslib.widget.FooterPreference; 41 import com.android.settingslib.widget.FooterPreferenceMixinCompat; 42 43 /** 44 * Controller that shows and updates the bluetooth device name 45 */ 46 public class DiscoverableFooterPreferenceController extends BasePreferenceController 47 implements LifecycleObserver, OnResume, OnPause { 48 private static final String KEY = "discoverable_footer_preference"; 49 50 @VisibleForTesting 51 BroadcastReceiver mBluetoothChangedReceiver; 52 @VisibleForTesting 53 LocalBluetoothManager mLocalManager; 54 private FooterPreferenceMixinCompat mFooterPreferenceMixin; 55 private FooterPreference mPreference; 56 private BluetoothAdapter mBluetoothAdapter; 57 private AlwaysDiscoverable mAlwaysDiscoverable; 58 DiscoverableFooterPreferenceController(Context context)59 public DiscoverableFooterPreferenceController(Context context) { 60 super(context, KEY); 61 mLocalManager = Utils.getLocalBtManager(context); 62 if (mLocalManager == null) { 63 return; 64 } 65 mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter(); 66 mAlwaysDiscoverable = new AlwaysDiscoverable(context); 67 initReceiver(); 68 } 69 initReceiver()70 private void initReceiver() { 71 mBluetoothChangedReceiver = new BroadcastReceiver() { 72 @Override 73 public void onReceive(Context context, Intent intent) { 74 if (intent.getAction().equals(BluetoothAdapter.ACTION_STATE_CHANGED)) { 75 final int state = intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, 76 BluetoothAdapter.ERROR); 77 updateFooterPreferenceTitle(state); 78 } 79 } 80 }; 81 } 82 init(DashboardFragment fragment)83 public void init(DashboardFragment fragment) { 84 mFooterPreferenceMixin = new FooterPreferenceMixinCompat(fragment, 85 fragment.getSettingsLifecycle()); 86 } 87 88 @VisibleForTesting init(FooterPreferenceMixinCompat footerPreferenceMixin, FooterPreference preference, AlwaysDiscoverable alwaysDiscoverable)89 void init(FooterPreferenceMixinCompat footerPreferenceMixin, FooterPreference preference, 90 AlwaysDiscoverable alwaysDiscoverable) { 91 mFooterPreferenceMixin = footerPreferenceMixin; 92 mPreference = preference; 93 mAlwaysDiscoverable = alwaysDiscoverable; 94 } 95 96 @Override displayPreference(PreferenceScreen screen)97 public void displayPreference(PreferenceScreen screen) { 98 super.displayPreference(screen); 99 addFooterPreference(screen); 100 } 101 102 @Override getAvailabilityStatus()103 public int getAvailabilityStatus() { 104 return mContext.getPackageManager().hasSystemFeature(PackageManager.FEATURE_BLUETOOTH) 105 ? AVAILABLE 106 : UNSUPPORTED_ON_DEVICE; 107 } 108 addFooterPreference(PreferenceScreen screen)109 private void addFooterPreference(PreferenceScreen screen) { 110 mPreference = mFooterPreferenceMixin.createFooterPreference(); 111 mPreference.setKey(KEY); 112 screen.addPreference(mPreference); 113 } 114 115 @Override onResume()116 public void onResume() { 117 if (mLocalManager == null) { 118 return; 119 } 120 mContext.registerReceiver(mBluetoothChangedReceiver, 121 new IntentFilter(BluetoothAdapter.ACTION_STATE_CHANGED)); 122 mAlwaysDiscoverable.start(); 123 updateFooterPreferenceTitle(mBluetoothAdapter.getState()); 124 } 125 126 @Override onPause()127 public void onPause() { 128 if (mLocalManager == null) { 129 return; 130 } 131 mContext.unregisterReceiver(mBluetoothChangedReceiver); 132 mAlwaysDiscoverable.stop(); 133 } 134 updateFooterPreferenceTitle(int bluetoothState)135 private void updateFooterPreferenceTitle (int bluetoothState) { 136 if (bluetoothState == BluetoothAdapter.STATE_ON) { 137 mPreference.setTitle(getPreferenceTitle()); 138 } else { 139 mPreference.setTitle(R.string.bluetooth_off_footer); 140 } 141 } 142 getPreferenceTitle()143 private CharSequence getPreferenceTitle() { 144 final String deviceName = mBluetoothAdapter.getName(); 145 if (TextUtils.isEmpty(deviceName)) { 146 return null; 147 } 148 149 return TextUtils.expandTemplate( 150 mContext.getText(R.string.bluetooth_device_name_summary), 151 BidiFormatter.getInstance().unicodeWrap(deviceName)); 152 } 153 }