1 /* 2 * Copyright (C) 2008 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.bluetooth; 18 19 import android.app.QueuedWork; 20 import android.content.Context; 21 import android.content.SharedPreferences; 22 import android.content.res.Configuration; 23 import android.util.Log; 24 25 /** 26 * LocalBluetoothPreferences provides an interface to the preferences 27 * related to Bluetooth. 28 */ 29 final class LocalBluetoothPreferences { 30 private static final String TAG = "LocalBluetoothPreferences"; 31 private static final boolean DEBUG = Utils.D; 32 private static final String SHARED_PREFERENCES_NAME = "bluetooth_settings"; 33 34 // If a device was picked from the device picker or was in discoverable mode 35 // in the last 60 seconds, show the pairing dialogs in foreground instead 36 // of raising notifications 37 private static final int GRACE_PERIOD_TO_SHOW_DIALOGS_IN_FOREGROUND = 60 * 1000; 38 39 private static final String KEY_DISCOVERING_TIMESTAMP = "last_discovering_time"; 40 41 private static final String KEY_LAST_SELECTED_DEVICE = "last_selected_device"; 42 43 private static final String KEY_LAST_SELECTED_DEVICE_TIME = "last_selected_device_time"; 44 45 private static final String KEY_DOCK_AUTO_CONNECT = "auto_connect_to_dock"; 46 47 private static final String KEY_DISCOVERABLE_END_TIMESTAMP = "discoverable_end_timestamp"; 48 49 private LocalBluetoothPreferences() { 50 } 51 52 private static SharedPreferences getSharedPreferences(Context context) { 53 return context.getSharedPreferences(SHARED_PREFERENCES_NAME, Context.MODE_PRIVATE); 54 } 55 56 static long getDiscoverableEndTimestamp(Context context) { 57 return getSharedPreferences(context).getLong( 58 KEY_DISCOVERABLE_END_TIMESTAMP, 0); 59 } 60 61 static boolean shouldShowDialogInForeground(Context context, 62 String deviceAddress) { 63 LocalBluetoothManager manager = LocalBluetoothManager.getInstance(context); 64 if (manager == null) { 65 if(DEBUG) Log.v(TAG, "manager == null - do not show dialog."); 66 return false; 67 } 68 69 // If Bluetooth Settings is visible 70 if (manager.isForegroundActivity()) { 71 return true; 72 } 73 74 // If in appliance mode, do not show dialog in foreground. 75 if ((context.getResources().getConfiguration().uiMode & 76 Configuration.UI_MODE_TYPE_APPLIANCE) == Configuration.UI_MODE_TYPE_APPLIANCE) { 77 if (DEBUG) Log.v(TAG, "in appliance mode - do not show dialog."); 78 return false; 79 } 80 81 long currentTimeMillis = System.currentTimeMillis(); 82 SharedPreferences sharedPreferences = getSharedPreferences(context); 83 84 // If the device was in discoverABLE mode recently 85 long lastDiscoverableEndTime = sharedPreferences.getLong( 86 KEY_DISCOVERABLE_END_TIMESTAMP, 0); 87 if ((lastDiscoverableEndTime + GRACE_PERIOD_TO_SHOW_DIALOGS_IN_FOREGROUND) 88 > currentTimeMillis) { 89 return true; 90 } 91 92 // If the device was discoverING recently 93 LocalBluetoothAdapter adapter = manager.getBluetoothAdapter(); 94 if (adapter != null && adapter.isDiscovering()) { 95 return true; 96 } else if ((sharedPreferences.getLong(KEY_DISCOVERING_TIMESTAMP, 0) + 97 GRACE_PERIOD_TO_SHOW_DIALOGS_IN_FOREGROUND) > currentTimeMillis) { 98 return true; 99 } 100 101 // If the device was picked in the device picker recently 102 if (deviceAddress != null) { 103 String lastSelectedDevice = sharedPreferences.getString( 104 KEY_LAST_SELECTED_DEVICE, null); 105 106 if (deviceAddress.equals(lastSelectedDevice)) { 107 long lastDeviceSelectedTime = sharedPreferences.getLong( 108 KEY_LAST_SELECTED_DEVICE_TIME, 0); 109 if ((lastDeviceSelectedTime + GRACE_PERIOD_TO_SHOW_DIALOGS_IN_FOREGROUND) 110 > currentTimeMillis) { 111 return true; 112 } 113 } 114 } 115 if (DEBUG) Log.v(TAG, "Found no reason to show the dialog - do not show dialog."); 116 return false; 117 } 118 119 static void persistSelectedDeviceInPicker(Context context, String deviceAddress) { 120 SharedPreferences.Editor editor = getSharedPreferences(context).edit(); 121 editor.putString(KEY_LAST_SELECTED_DEVICE, 122 deviceAddress); 123 editor.putLong(KEY_LAST_SELECTED_DEVICE_TIME, 124 System.currentTimeMillis()); 125 editor.apply(); 126 } 127 128 static void persistDiscoverableEndTimestamp(Context context, long endTimestamp) { 129 SharedPreferences.Editor editor = getSharedPreferences(context).edit(); 130 editor.putLong(KEY_DISCOVERABLE_END_TIMESTAMP, endTimestamp); 131 editor.apply(); 132 } 133 134 static void persistDiscoveringTimestamp(final Context context) { 135 // Load the shared preferences and edit it on a background 136 // thread (but serialized!). 137 QueuedWork.singleThreadExecutor().submit(new Runnable() { 138 public void run() { 139 SharedPreferences.Editor editor = getSharedPreferences(context).edit(); 140 editor.putLong( 141 KEY_DISCOVERING_TIMESTAMP, 142 System.currentTimeMillis()); 143 editor.apply(); 144 } 145 }); 146 } 147 148 static boolean hasDockAutoConnectSetting(Context context, String addr) { 149 return getSharedPreferences(context).contains(KEY_DOCK_AUTO_CONNECT + addr); 150 } 151 152 static boolean getDockAutoConnectSetting(Context context, String addr) { 153 return getSharedPreferences(context).getBoolean(KEY_DOCK_AUTO_CONNECT + addr, 154 false); 155 } 156 157 static void saveDockAutoConnectSetting(Context context, String addr, boolean autoConnect) { 158 SharedPreferences.Editor editor = getSharedPreferences(context).edit(); 159 editor.putBoolean(KEY_DOCK_AUTO_CONNECT + addr, autoConnect); 160 editor.apply(); 161 } 162 163 static void removeDockAutoConnectSetting(Context context, String addr) { 164 SharedPreferences.Editor editor = getSharedPreferences(context).edit(); 165 editor.remove(KEY_DOCK_AUTO_CONNECT + addr); 166 editor.apply(); 167 } 168 } 169
