| /* |
| * Copyright (C) 2017 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.car.settings.bluetooth; |
| |
| import android.content.Context; |
| import android.content.SharedPreferences; |
| import android.content.res.Configuration; |
| import android.text.TextUtils; |
| import android.widget.Toast; |
| |
| import com.android.car.settings.R; |
| import com.android.car.settings.common.Logger; |
| import com.android.car.ui.AlertDialogBuilder; |
| import com.android.settingslib.bluetooth.LocalBluetoothAdapter; |
| import com.android.settingslib.bluetooth.LocalBluetoothManager; |
| import com.android.settingslib.bluetooth.LocalBluetoothManager.BluetoothManagerCallback; |
| |
| /** |
| * BluetoothUtils provides an interface to the preferences |
| * related to Bluetooth. |
| */ |
| final class BluetoothUtils { |
| private static final Logger LOG = new Logger(BluetoothUtils.class); |
| private static final String SHARED_PREFERENCES_NAME = "bluetooth_settings"; |
| |
| private static final BluetoothManagerCallback mOnInitCallback = new BluetoothManagerCallback() { |
| @Override |
| public void onBluetoothManagerInitialized(Context appContext, |
| LocalBluetoothManager bluetoothManager) { |
| com.android.settingslib.bluetooth.BluetoothUtils.setErrorListener( |
| com.android.car.settings.bluetooth.BluetoothUtils::showError); |
| } |
| }; |
| |
| // If a device was picked from the device picker or was in discoverable mode |
| // in the last 60 seconds, show the pairing dialogs in foreground instead |
| // of raising notifications |
| private static final int GRACE_PERIOD_TO_SHOW_DIALOGS_IN_FOREGROUND = 60 * 1000; |
| |
| private static final String KEY_LAST_SELECTED_DEVICE = "last_selected_device"; |
| |
| private static final String KEY_LAST_SELECTED_DEVICE_TIME = "last_selected_device_time"; |
| |
| private static final String KEY_DISCOVERABLE_END_TIMESTAMP = "discoverable_end_timestamp"; |
| |
| private BluetoothUtils() { |
| } |
| |
| static void showError(Context context, String name, int messageResId) { |
| showError(context, name, messageResId, getLocalBtManager(context)); |
| } |
| |
| private static void showError(Context context, String name, int messageResId, |
| LocalBluetoothManager manager) { |
| String message = context.getString(messageResId, name); |
| Context activity = manager.getForegroundActivity(); |
| if (manager.isForegroundActivity()) { |
| new AlertDialogBuilder(activity) |
| .setTitle(R.string.bluetooth_error_title) |
| .setMessage(message) |
| .setPositiveButton(android.R.string.ok, null) |
| .create() |
| .show(); |
| } else { |
| Toast.makeText(context, message, Toast.LENGTH_SHORT).show(); |
| } |
| } |
| |
| private static SharedPreferences getSharedPreferences(Context context) { |
| return context.getSharedPreferences(SHARED_PREFERENCES_NAME, Context.MODE_PRIVATE); |
| } |
| |
| static long getDiscoverableEndTimestamp(Context context) { |
| return getSharedPreferences(context).getLong( |
| KEY_DISCOVERABLE_END_TIMESTAMP, 0); |
| } |
| |
| static boolean shouldShowDialogInForeground(Context context, |
| String deviceAddress, String deviceName) { |
| LocalBluetoothManager manager = getLocalBtManager(context); |
| if (manager == null) { |
| LOG.v("manager == null - do not show dialog."); |
| return false; |
| } |
| |
| // If Bluetooth Settings is visible |
| if (manager.isForegroundActivity()) { |
| return true; |
| } |
| |
| // If in appliance mode, do not show dialog in foreground. |
| if ((context.getResources().getConfiguration().uiMode & |
| Configuration.UI_MODE_TYPE_APPLIANCE) == Configuration.UI_MODE_TYPE_APPLIANCE) { |
| LOG.v("in appliance mode - do not show dialog."); |
| return false; |
| } |
| |
| long currentTimeMillis = System.currentTimeMillis(); |
| SharedPreferences sharedPreferences = getSharedPreferences(context); |
| |
| // If the device was in discoverABLE mode recently |
| long lastDiscoverableEndTime = sharedPreferences.getLong( |
| KEY_DISCOVERABLE_END_TIMESTAMP, 0); |
| if ((lastDiscoverableEndTime + GRACE_PERIOD_TO_SHOW_DIALOGS_IN_FOREGROUND) |
| > currentTimeMillis) { |
| return true; |
| } |
| |
| // If the device was discoverING recently |
| LocalBluetoothAdapter adapter = manager.getBluetoothAdapter(); |
| if (adapter != null) { |
| if (adapter.isDiscovering()) { |
| return true; |
| } |
| if ((adapter.getDiscoveryEndMillis() + |
| GRACE_PERIOD_TO_SHOW_DIALOGS_IN_FOREGROUND) > currentTimeMillis) { |
| return true; |
| } |
| } |
| |
| // If the device was picked in the device picker recently |
| if (deviceAddress != null) { |
| String lastSelectedDevice = sharedPreferences.getString( |
| KEY_LAST_SELECTED_DEVICE, null); |
| |
| if (deviceAddress.equals(lastSelectedDevice)) { |
| long lastDeviceSelectedTime = sharedPreferences.getLong( |
| KEY_LAST_SELECTED_DEVICE_TIME, 0); |
| if ((lastDeviceSelectedTime + GRACE_PERIOD_TO_SHOW_DIALOGS_IN_FOREGROUND) |
| > currentTimeMillis) { |
| return true; |
| } |
| } |
| } |
| |
| |
| if (!TextUtils.isEmpty(deviceName)) { |
| // If the device is a custom BT keyboard specifically for this device |
| String packagedKeyboardName = context.getString( |
| com.android.internal.R.string.config_packagedKeyboardName); |
| if (deviceName.equals(packagedKeyboardName)) { |
| LOG.v("showing dialog for packaged keyboard"); |
| return true; |
| } |
| } |
| |
| LOG.v("Found no reason to show the dialog - do not show dialog."); |
| return false; |
| } |
| |
| static void persistSelectedDeviceInPicker(Context context, String deviceAddress) { |
| SharedPreferences.Editor editor = getSharedPreferences(context).edit(); |
| editor.putString(KEY_LAST_SELECTED_DEVICE, deviceAddress); |
| editor.putLong(KEY_LAST_SELECTED_DEVICE_TIME, System.currentTimeMillis()); |
| editor.apply(); |
| } |
| |
| static void persistDiscoverableEndTimestamp(Context context, long endTimestamp) { |
| SharedPreferences.Editor editor = getSharedPreferences(context).edit(); |
| editor.putLong(KEY_DISCOVERABLE_END_TIMESTAMP, endTimestamp); |
| editor.apply(); |
| } |
| |
| public static LocalBluetoothManager getLocalBtManager(Context context) { |
| return LocalBluetoothManager.getInstance(context, mOnInitCallback); |
| } |
| } |