Michael Wright | 9209c9c | 2015-09-03 17:57:01 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2015 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.systemui.keyboard; |
| 18 | |
Michael Wright | 9209c9c | 2015-09-03 17:57:01 +0100 | [diff] [blame] | 19 | import android.bluetooth.BluetoothAdapter; |
| 20 | import android.bluetooth.BluetoothDevice; |
Michael Wright | 9209c9c | 2015-09-03 17:57:01 +0100 | [diff] [blame] | 21 | import android.bluetooth.le.BluetoothLeScanner; |
| 22 | import android.bluetooth.le.ScanCallback; |
| 23 | import android.bluetooth.le.ScanFilter; |
Dmitry Torokhov | 79f00cf | 2015-10-22 10:07:53 -0700 | [diff] [blame] | 24 | import android.bluetooth.le.ScanRecord; |
Michael Wright | 9209c9c | 2015-09-03 17:57:01 +0100 | [diff] [blame] | 25 | import android.bluetooth.le.ScanResult; |
| 26 | import android.bluetooth.le.ScanSettings; |
| 27 | import android.content.ContentResolver; |
| 28 | import android.content.Context; |
| 29 | import android.content.DialogInterface; |
Michael Wright | 9209c9c | 2015-09-03 17:57:01 +0100 | [diff] [blame] | 30 | import android.content.res.Configuration; |
| 31 | import android.hardware.input.InputManager; |
| 32 | import android.os.Handler; |
| 33 | import android.os.HandlerThread; |
| 34 | import android.os.Looper; |
| 35 | import android.os.Message; |
| 36 | import android.os.Process; |
| 37 | import android.os.SystemClock; |
| 38 | import android.os.UserHandle; |
| 39 | import android.provider.Settings.Secure; |
| 40 | import android.text.TextUtils; |
Michael Wright | 875d45a | 2015-11-26 14:10:32 +0000 | [diff] [blame] | 41 | import android.util.Pair; |
Michael Wright | 9209c9c | 2015-09-03 17:57:01 +0100 | [diff] [blame] | 42 | import android.util.Slog; |
Michael Wright | 875d45a | 2015-11-26 14:10:32 +0000 | [diff] [blame] | 43 | import android.widget.Toast; |
Michael Wright | 9209c9c | 2015-09-03 17:57:01 +0100 | [diff] [blame] | 44 | |
| 45 | import com.android.settingslib.bluetooth.BluetoothCallback; |
Gus Prevas | ab33679 | 2018-11-14 13:52:20 -0500 | [diff] [blame] | 46 | import com.android.settingslib.bluetooth.BluetoothUtils; |
Michael Wright | 9209c9c | 2015-09-03 17:57:01 +0100 | [diff] [blame] | 47 | import com.android.settingslib.bluetooth.CachedBluetoothDevice; |
| 48 | import com.android.settingslib.bluetooth.CachedBluetoothDeviceManager; |
| 49 | import com.android.settingslib.bluetooth.LocalBluetoothAdapter; |
| 50 | import com.android.settingslib.bluetooth.LocalBluetoothManager; |
| 51 | import com.android.settingslib.bluetooth.LocalBluetoothProfileManager; |
Amin Shaikh | 947f76d | 2018-08-27 15:55:57 -0400 | [diff] [blame] | 52 | import com.android.systemui.Dependency; |
Michael Wright | 9209c9c | 2015-09-03 17:57:01 +0100 | [diff] [blame] | 53 | import com.android.systemui.R; |
| 54 | import com.android.systemui.SystemUI; |
| 55 | |
| 56 | import java.io.FileDescriptor; |
| 57 | import java.io.PrintWriter; |
| 58 | import java.util.Arrays; |
| 59 | import java.util.Collection; |
| 60 | import java.util.List; |
Michael Wright | 9209c9c | 2015-09-03 17:57:01 +0100 | [diff] [blame] | 61 | import java.util.Set; |
| 62 | |
| 63 | public class KeyboardUI extends SystemUI implements InputManager.OnTabletModeChangedListener { |
| 64 | private static final String TAG = "KeyboardUI"; |
| 65 | private static final boolean DEBUG = false; |
| 66 | |
| 67 | // Give BT some time to start after SyUI comes up. This avoids flashing a dialog in the user's |
| 68 | // face because BT starts a little bit later in the boot process than SysUI and it takes some |
| 69 | // time for us to receive the signal that it's starting. |
| 70 | private static final long BLUETOOTH_START_DELAY_MILLIS = 10 * 1000; |
| 71 | |
Dmitry Torokhov | 365bf06 | 2015-11-05 17:40:32 -0800 | [diff] [blame] | 72 | // We will be scanning up to 30 seconds, after which we'll stop. |
| 73 | private static final long BLUETOOTH_SCAN_TIMEOUT_MILLIS = 30 * 1000; |
| 74 | |
Michael Wright | 9209c9c | 2015-09-03 17:57:01 +0100 | [diff] [blame] | 75 | private static final int STATE_NOT_ENABLED = -1; |
| 76 | private static final int STATE_UNKNOWN = 0; |
| 77 | private static final int STATE_WAITING_FOR_BOOT_COMPLETED = 1; |
| 78 | private static final int STATE_WAITING_FOR_TABLET_MODE_EXIT = 2; |
| 79 | private static final int STATE_WAITING_FOR_DEVICE_DISCOVERY = 3; |
| 80 | private static final int STATE_WAITING_FOR_BLUETOOTH = 4; |
Dmitry Torokhov | 365bf06 | 2015-11-05 17:40:32 -0800 | [diff] [blame] | 81 | private static final int STATE_PAIRING = 5; |
| 82 | private static final int STATE_PAIRED = 6; |
Michael Wright | 875d45a | 2015-11-26 14:10:32 +0000 | [diff] [blame] | 83 | private static final int STATE_PAIRING_FAILED = 7; |
| 84 | private static final int STATE_USER_CANCELLED = 8; |
| 85 | private static final int STATE_DEVICE_NOT_FOUND = 9; |
Michael Wright | 9209c9c | 2015-09-03 17:57:01 +0100 | [diff] [blame] | 86 | |
| 87 | private static final int MSG_INIT = 0; |
| 88 | private static final int MSG_ON_BOOT_COMPLETED = 1; |
| 89 | private static final int MSG_PROCESS_KEYBOARD_STATE = 2; |
| 90 | private static final int MSG_ENABLE_BLUETOOTH = 3; |
| 91 | private static final int MSG_ON_BLUETOOTH_STATE_CHANGED = 4; |
| 92 | private static final int MSG_ON_DEVICE_BOND_STATE_CHANGED = 5; |
| 93 | private static final int MSG_ON_BLUETOOTH_DEVICE_ADDED = 6; |
| 94 | private static final int MSG_ON_BLE_SCAN_FAILED = 7; |
| 95 | private static final int MSG_SHOW_BLUETOOTH_DIALOG = 8; |
| 96 | private static final int MSG_DISMISS_BLUETOOTH_DIALOG = 9; |
Dmitry Torokhov | 365bf06 | 2015-11-05 17:40:32 -0800 | [diff] [blame] | 97 | private static final int MSG_BLE_ABORT_SCAN = 10; |
Michael Wright | 875d45a | 2015-11-26 14:10:32 +0000 | [diff] [blame] | 98 | private static final int MSG_SHOW_ERROR = 11; |
Michael Wright | 9209c9c | 2015-09-03 17:57:01 +0100 | [diff] [blame] | 99 | |
| 100 | private volatile KeyboardHandler mHandler; |
| 101 | private volatile KeyboardUIHandler mUIHandler; |
| 102 | |
| 103 | protected volatile Context mContext; |
| 104 | |
| 105 | private boolean mEnabled; |
| 106 | private String mKeyboardName; |
| 107 | private CachedBluetoothDeviceManager mCachedDeviceManager; |
| 108 | private LocalBluetoothAdapter mLocalBluetoothAdapter; |
| 109 | private LocalBluetoothProfileManager mProfileManager; |
| 110 | private boolean mBootCompleted; |
| 111 | private long mBootCompletedTime; |
| 112 | |
| 113 | private int mInTabletMode = InputManager.SWITCH_STATE_UNKNOWN; |
Dmitry Torokhov | 365bf06 | 2015-11-05 17:40:32 -0800 | [diff] [blame] | 114 | private int mScanAttempt = 0; |
Michael Wright | 9209c9c | 2015-09-03 17:57:01 +0100 | [diff] [blame] | 115 | private ScanCallback mScanCallback; |
| 116 | private BluetoothDialog mDialog; |
| 117 | |
| 118 | private int mState; |
| 119 | |
Dave Mankoff | a5d8a39 | 2019-10-10 12:21:09 -0400 | [diff] [blame] | 120 | public KeyboardUI(Context context) { |
| 121 | super(context); |
| 122 | } |
| 123 | |
Michael Wright | 9209c9c | 2015-09-03 17:57:01 +0100 | [diff] [blame] | 124 | @Override |
| 125 | public void start() { |
| 126 | mContext = super.mContext; |
| 127 | HandlerThread thread = new HandlerThread("Keyboard", Process.THREAD_PRIORITY_BACKGROUND); |
| 128 | thread.start(); |
| 129 | mHandler = new KeyboardHandler(thread.getLooper()); |
| 130 | mHandler.sendEmptyMessage(MSG_INIT); |
| 131 | } |
| 132 | |
| 133 | @Override |
| 134 | protected void onConfigurationChanged(Configuration newConfig) { |
| 135 | } |
| 136 | |
| 137 | @Override |
| 138 | public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { |
| 139 | pw.println("KeyboardUI:"); |
| 140 | pw.println(" mEnabled=" + mEnabled); |
| 141 | pw.println(" mBootCompleted=" + mEnabled); |
| 142 | pw.println(" mBootCompletedTime=" + mBootCompletedTime); |
| 143 | pw.println(" mKeyboardName=" + mKeyboardName); |
| 144 | pw.println(" mInTabletMode=" + mInTabletMode); |
| 145 | pw.println(" mState=" + stateToString(mState)); |
| 146 | } |
| 147 | |
| 148 | @Override |
| 149 | protected void onBootCompleted() { |
| 150 | mHandler.sendEmptyMessage(MSG_ON_BOOT_COMPLETED); |
| 151 | } |
| 152 | |
| 153 | @Override |
| 154 | public void onTabletModeChanged(long whenNanos, boolean inTabletMode) { |
| 155 | if (DEBUG) { |
| 156 | Slog.d(TAG, "onTabletModeChanged(" + whenNanos + ", " + inTabletMode + ")"); |
| 157 | } |
| 158 | |
| 159 | if (inTabletMode && mInTabletMode != InputManager.SWITCH_STATE_ON |
| 160 | || !inTabletMode && mInTabletMode != InputManager.SWITCH_STATE_OFF) { |
| 161 | mInTabletMode = inTabletMode ? |
| 162 | InputManager.SWITCH_STATE_ON : InputManager.SWITCH_STATE_OFF; |
| 163 | processKeyboardState(); |
| 164 | } |
| 165 | } |
| 166 | |
| 167 | // Shoud only be called on the handler thread |
| 168 | private void init() { |
| 169 | Context context = mContext; |
| 170 | mKeyboardName = |
| 171 | context.getString(com.android.internal.R.string.config_packagedKeyboardName); |
| 172 | if (TextUtils.isEmpty(mKeyboardName)) { |
| 173 | if (DEBUG) { |
| 174 | Slog.d(TAG, "No packaged keyboard name given."); |
| 175 | } |
| 176 | return; |
| 177 | } |
| 178 | |
Amin Shaikh | 947f76d | 2018-08-27 15:55:57 -0400 | [diff] [blame] | 179 | LocalBluetoothManager bluetoothManager = Dependency.get(LocalBluetoothManager.class); |
Michael Wright | 9209c9c | 2015-09-03 17:57:01 +0100 | [diff] [blame] | 180 | if (bluetoothManager == null) { |
| 181 | if (DEBUG) { |
| 182 | Slog.e(TAG, "Failed to retrieve LocalBluetoothManager instance"); |
| 183 | } |
| 184 | return; |
| 185 | } |
| 186 | mEnabled = true; |
| 187 | mCachedDeviceManager = bluetoothManager.getCachedDeviceManager(); |
| 188 | mLocalBluetoothAdapter = bluetoothManager.getBluetoothAdapter(); |
| 189 | mProfileManager = bluetoothManager.getProfileManager(); |
| 190 | bluetoothManager.getEventManager().registerCallback(new BluetoothCallbackHandler()); |
Kunhung Li | e7b7cb8 | 2018-05-17 11:04:54 +0800 | [diff] [blame] | 191 | BluetoothUtils.setErrorListener(new BluetoothErrorListener()); |
Michael Wright | 9209c9c | 2015-09-03 17:57:01 +0100 | [diff] [blame] | 192 | |
Yohei Yukawa | 8ce2a53 | 2015-11-25 20:35:04 -0800 | [diff] [blame] | 193 | InputManager im = context.getSystemService(InputManager.class); |
Michael Wright | 9209c9c | 2015-09-03 17:57:01 +0100 | [diff] [blame] | 194 | im.registerOnTabletModeChangedListener(this, mHandler); |
| 195 | mInTabletMode = im.isInTabletMode(); |
| 196 | |
| 197 | processKeyboardState(); |
| 198 | mUIHandler = new KeyboardUIHandler(); |
| 199 | } |
| 200 | |
| 201 | // Should only be called on the handler thread |
| 202 | private void processKeyboardState() { |
| 203 | mHandler.removeMessages(MSG_PROCESS_KEYBOARD_STATE); |
| 204 | |
| 205 | if (!mEnabled) { |
| 206 | mState = STATE_NOT_ENABLED; |
| 207 | return; |
| 208 | } |
| 209 | |
| 210 | if (!mBootCompleted) { |
| 211 | mState = STATE_WAITING_FOR_BOOT_COMPLETED; |
| 212 | return; |
| 213 | } |
| 214 | |
| 215 | if (mInTabletMode != InputManager.SWITCH_STATE_OFF) { |
| 216 | if (mState == STATE_WAITING_FOR_DEVICE_DISCOVERY) { |
| 217 | stopScanning(); |
Michael Wright | 875d45a | 2015-11-26 14:10:32 +0000 | [diff] [blame] | 218 | } else if (mState == STATE_WAITING_FOR_BLUETOOTH) { |
| 219 | mUIHandler.sendEmptyMessage(MSG_DISMISS_BLUETOOTH_DIALOG); |
Michael Wright | 9209c9c | 2015-09-03 17:57:01 +0100 | [diff] [blame] | 220 | } |
| 221 | mState = STATE_WAITING_FOR_TABLET_MODE_EXIT; |
| 222 | return; |
| 223 | } |
| 224 | |
| 225 | final int btState = mLocalBluetoothAdapter.getState(); |
Michael Wright | 875d45a | 2015-11-26 14:10:32 +0000 | [diff] [blame] | 226 | if ((btState == BluetoothAdapter.STATE_TURNING_ON || btState == BluetoothAdapter.STATE_ON) |
Michael Wright | 9209c9c | 2015-09-03 17:57:01 +0100 | [diff] [blame] | 227 | && mState == STATE_WAITING_FOR_BLUETOOTH) { |
| 228 | // If we're waiting for bluetooth but it has come on in the meantime, or is coming |
| 229 | // on, just dismiss the dialog. This frequently happens during device startup. |
| 230 | mUIHandler.sendEmptyMessage(MSG_DISMISS_BLUETOOTH_DIALOG); |
| 231 | } |
| 232 | |
| 233 | if (btState == BluetoothAdapter.STATE_TURNING_ON) { |
| 234 | mState = STATE_WAITING_FOR_BLUETOOTH; |
| 235 | // Wait for bluetooth to fully come on. |
| 236 | return; |
| 237 | } |
| 238 | |
| 239 | if (btState != BluetoothAdapter.STATE_ON) { |
| 240 | mState = STATE_WAITING_FOR_BLUETOOTH; |
| 241 | showBluetoothDialog(); |
| 242 | return; |
| 243 | } |
| 244 | |
| 245 | CachedBluetoothDevice device = getPairedKeyboard(); |
Dmitry Torokhov | 79f00cf | 2015-10-22 10:07:53 -0700 | [diff] [blame] | 246 | if (mState == STATE_WAITING_FOR_TABLET_MODE_EXIT || mState == STATE_WAITING_FOR_BLUETOOTH) { |
| 247 | if (device != null) { |
| 248 | // If we're just coming out of tablet mode or BT just turned on, |
| 249 | // then we want to go ahead and automatically connect to the |
| 250 | // keyboard. We want to avoid this in other cases because we might |
| 251 | // be spuriously called after the user has manually disconnected |
| 252 | // the keyboard, meaning we shouldn't try to automtically connect |
| 253 | // it again. |
| 254 | mState = STATE_PAIRED; |
| 255 | device.connect(false); |
| 256 | return; |
| 257 | } |
| 258 | mCachedDeviceManager.clearNonBondedDevices(); |
Michael Wright | 9209c9c | 2015-09-03 17:57:01 +0100 | [diff] [blame] | 259 | } |
| 260 | |
| 261 | device = getDiscoveredKeyboard(); |
| 262 | if (device != null) { |
| 263 | mState = STATE_PAIRING; |
| 264 | device.startPairing(); |
| 265 | } else { |
| 266 | mState = STATE_WAITING_FOR_DEVICE_DISCOVERY; |
| 267 | startScanning(); |
| 268 | } |
| 269 | } |
| 270 | |
| 271 | // Should only be called on the handler thread |
| 272 | public void onBootCompletedInternal() { |
| 273 | mBootCompleted = true; |
| 274 | mBootCompletedTime = SystemClock.uptimeMillis(); |
| 275 | if (mState == STATE_WAITING_FOR_BOOT_COMPLETED) { |
| 276 | processKeyboardState(); |
| 277 | } |
| 278 | } |
| 279 | |
| 280 | // Should only be called on the handler thread |
| 281 | private void showBluetoothDialog() { |
| 282 | if (isUserSetupComplete()) { |
| 283 | long now = SystemClock.uptimeMillis(); |
| 284 | long earliestDialogTime = mBootCompletedTime + BLUETOOTH_START_DELAY_MILLIS; |
| 285 | if (earliestDialogTime < now) { |
| 286 | mUIHandler.sendEmptyMessage(MSG_SHOW_BLUETOOTH_DIALOG); |
| 287 | } else { |
| 288 | mHandler.sendEmptyMessageAtTime(MSG_PROCESS_KEYBOARD_STATE, earliestDialogTime); |
| 289 | } |
| 290 | } else { |
| 291 | // If we're in setup wizard and the keyboard is docked, just automatically enable BT. |
| 292 | mLocalBluetoothAdapter.enable(); |
| 293 | } |
| 294 | } |
| 295 | |
| 296 | private boolean isUserSetupComplete() { |
| 297 | ContentResolver resolver = mContext.getContentResolver(); |
| 298 | return Secure.getIntForUser( |
| 299 | resolver, Secure.USER_SETUP_COMPLETE, 0, UserHandle.USER_CURRENT) != 0; |
| 300 | } |
| 301 | |
| 302 | private CachedBluetoothDevice getPairedKeyboard() { |
| 303 | Set<BluetoothDevice> devices = mLocalBluetoothAdapter.getBondedDevices(); |
| 304 | for (BluetoothDevice d : devices) { |
| 305 | if (mKeyboardName.equals(d.getName())) { |
| 306 | return getCachedBluetoothDevice(d); |
| 307 | } |
| 308 | } |
| 309 | return null; |
| 310 | } |
| 311 | |
| 312 | private CachedBluetoothDevice getDiscoveredKeyboard() { |
| 313 | Collection<CachedBluetoothDevice> devices = mCachedDeviceManager.getCachedDevicesCopy(); |
| 314 | for (CachedBluetoothDevice d : devices) { |
| 315 | if (d.getName().equals(mKeyboardName)) { |
| 316 | return d; |
| 317 | } |
| 318 | } |
| 319 | return null; |
| 320 | } |
| 321 | |
| 322 | |
| 323 | private CachedBluetoothDevice getCachedBluetoothDevice(BluetoothDevice d) { |
| 324 | CachedBluetoothDevice cachedDevice = mCachedDeviceManager.findDevice(d); |
| 325 | if (cachedDevice == null) { |
timhypeng | 8a6ef89 | 2018-07-31 15:44:31 +0800 | [diff] [blame] | 326 | cachedDevice = mCachedDeviceManager.addDevice(d); |
Michael Wright | 9209c9c | 2015-09-03 17:57:01 +0100 | [diff] [blame] | 327 | } |
| 328 | return cachedDevice; |
| 329 | } |
| 330 | |
| 331 | private void startScanning() { |
| 332 | BluetoothLeScanner scanner = mLocalBluetoothAdapter.getBluetoothLeScanner(); |
| 333 | ScanFilter filter = (new ScanFilter.Builder()).setDeviceName(mKeyboardName).build(); |
| 334 | ScanSettings settings = (new ScanSettings.Builder()) |
| 335 | .setCallbackType(ScanSettings.CALLBACK_TYPE_ALL_MATCHES) |
| 336 | .setNumOfMatches(ScanSettings.MATCH_NUM_ONE_ADVERTISEMENT) |
| 337 | .setScanMode(ScanSettings.SCAN_MODE_LOW_LATENCY) |
| 338 | .setReportDelay(0) |
| 339 | .build(); |
| 340 | mScanCallback = new KeyboardScanCallback(); |
| 341 | scanner.startScan(Arrays.asList(filter), settings, mScanCallback); |
Dmitry Torokhov | 365bf06 | 2015-11-05 17:40:32 -0800 | [diff] [blame] | 342 | |
| 343 | Message abortMsg = mHandler.obtainMessage(MSG_BLE_ABORT_SCAN, ++mScanAttempt, 0); |
| 344 | mHandler.sendMessageDelayed(abortMsg, BLUETOOTH_SCAN_TIMEOUT_MILLIS); |
Michael Wright | 9209c9c | 2015-09-03 17:57:01 +0100 | [diff] [blame] | 345 | } |
| 346 | |
| 347 | private void stopScanning() { |
| 348 | if (mScanCallback != null) { |
Michael Wright | 875d45a | 2015-11-26 14:10:32 +0000 | [diff] [blame] | 349 | BluetoothLeScanner scanner = mLocalBluetoothAdapter.getBluetoothLeScanner(); |
| 350 | if (scanner != null) { |
| 351 | scanner.stopScan(mScanCallback); |
| 352 | } |
Michael Wright | 9209c9c | 2015-09-03 17:57:01 +0100 | [diff] [blame] | 353 | mScanCallback = null; |
| 354 | } |
| 355 | } |
| 356 | |
| 357 | // Should only be called on the handler thread |
Dmitry Torokhov | 365bf06 | 2015-11-05 17:40:32 -0800 | [diff] [blame] | 358 | private void bleAbortScanInternal(int scanAttempt) { |
| 359 | if (mState == STATE_WAITING_FOR_DEVICE_DISCOVERY && scanAttempt == mScanAttempt) { |
| 360 | if (DEBUG) { |
| 361 | Slog.d(TAG, "Bluetooth scan timed out"); |
| 362 | } |
| 363 | stopScanning(); |
| 364 | // FIXME: should we also try shutting off bluetooth if we enabled |
| 365 | // it in the first place? |
| 366 | mState = STATE_DEVICE_NOT_FOUND; |
| 367 | } |
| 368 | } |
| 369 | |
| 370 | // Should only be called on the handler thread |
Michael Wright | 9209c9c | 2015-09-03 17:57:01 +0100 | [diff] [blame] | 371 | private void onDeviceAddedInternal(CachedBluetoothDevice d) { |
| 372 | if (mState == STATE_WAITING_FOR_DEVICE_DISCOVERY && d.getName().equals(mKeyboardName)) { |
| 373 | stopScanning(); |
| 374 | d.startPairing(); |
| 375 | mState = STATE_PAIRING; |
| 376 | } |
| 377 | } |
| 378 | |
| 379 | // Should only be called on the handler thread |
| 380 | private void onBluetoothStateChangedInternal(int bluetoothState) { |
| 381 | if (bluetoothState == BluetoothAdapter.STATE_ON && mState == STATE_WAITING_FOR_BLUETOOTH) { |
| 382 | processKeyboardState(); |
| 383 | } |
| 384 | } |
| 385 | |
| 386 | // Should only be called on the handler thread |
| 387 | private void onDeviceBondStateChangedInternal(CachedBluetoothDevice d, int bondState) { |
Michael Wright | 875d45a | 2015-11-26 14:10:32 +0000 | [diff] [blame] | 388 | if (mState == STATE_PAIRING && d.getName().equals(mKeyboardName)) { |
| 389 | if (bondState == BluetoothDevice.BOND_BONDED) { |
| 390 | // We don't need to manually connect to the device here because it will |
| 391 | // automatically try to connect after it has been paired. |
| 392 | mState = STATE_PAIRED; |
| 393 | } else if (bondState == BluetoothDevice.BOND_NONE) { |
| 394 | mState = STATE_PAIRING_FAILED; |
| 395 | } |
Michael Wright | 9209c9c | 2015-09-03 17:57:01 +0100 | [diff] [blame] | 396 | } |
| 397 | } |
| 398 | |
| 399 | // Should only be called on the handler thread |
| 400 | private void onBleScanFailedInternal() { |
| 401 | mScanCallback = null; |
| 402 | if (mState == STATE_WAITING_FOR_DEVICE_DISCOVERY) { |
| 403 | mState = STATE_DEVICE_NOT_FOUND; |
| 404 | } |
| 405 | } |
| 406 | |
Michael Wright | 875d45a | 2015-11-26 14:10:32 +0000 | [diff] [blame] | 407 | // Should only be called on the handler thread. We want to be careful not to show errors for |
| 408 | // pairings not initiated by this UI, so we only pop up the toast when we're at an appropriate |
| 409 | // point in our pairing flow and it's the expected device. |
| 410 | private void onShowErrorInternal(Context context, String name, int messageResId) { |
| 411 | if ((mState == STATE_PAIRING || mState == STATE_PAIRING_FAILED) |
| 412 | && mKeyboardName.equals(name)) { |
| 413 | String message = context.getString(messageResId, name); |
| 414 | Toast.makeText(context, message, Toast.LENGTH_SHORT).show(); |
| 415 | } |
| 416 | } |
| 417 | |
Michael Wright | 9209c9c | 2015-09-03 17:57:01 +0100 | [diff] [blame] | 418 | private final class KeyboardUIHandler extends Handler { |
| 419 | public KeyboardUIHandler() { |
| 420 | super(Looper.getMainLooper(), null, true /*async*/); |
| 421 | } |
| 422 | @Override |
| 423 | public void handleMessage(Message msg) { |
| 424 | switch(msg.what) { |
| 425 | case MSG_SHOW_BLUETOOTH_DIALOG: { |
Michael Wright | 875d45a | 2015-11-26 14:10:32 +0000 | [diff] [blame] | 426 | if (mDialog != null) { |
| 427 | // Don't show another dialog if one is already present |
| 428 | break; |
| 429 | } |
| 430 | DialogInterface.OnClickListener clickListener = |
| 431 | new BluetoothDialogClickListener(); |
| 432 | DialogInterface.OnDismissListener dismissListener = |
| 433 | new BluetoothDialogDismissListener(); |
Michael Wright | 9209c9c | 2015-09-03 17:57:01 +0100 | [diff] [blame] | 434 | mDialog = new BluetoothDialog(mContext); |
| 435 | mDialog.setTitle(R.string.enable_bluetooth_title); |
| 436 | mDialog.setMessage(R.string.enable_bluetooth_message); |
Michael Wright | 875d45a | 2015-11-26 14:10:32 +0000 | [diff] [blame] | 437 | mDialog.setPositiveButton( |
| 438 | R.string.enable_bluetooth_confirmation_ok, clickListener); |
| 439 | mDialog.setNegativeButton(android.R.string.cancel, clickListener); |
| 440 | mDialog.setOnDismissListener(dismissListener); |
Michael Wright | 9209c9c | 2015-09-03 17:57:01 +0100 | [diff] [blame] | 441 | mDialog.show(); |
| 442 | break; |
| 443 | } |
| 444 | case MSG_DISMISS_BLUETOOTH_DIALOG: { |
| 445 | if (mDialog != null) { |
| 446 | mDialog.dismiss(); |
Michael Wright | 9209c9c | 2015-09-03 17:57:01 +0100 | [diff] [blame] | 447 | } |
| 448 | break; |
| 449 | } |
| 450 | } |
| 451 | } |
| 452 | } |
| 453 | |
| 454 | private final class KeyboardHandler extends Handler { |
| 455 | public KeyboardHandler(Looper looper) { |
| 456 | super(looper, null, true /*async*/); |
| 457 | } |
| 458 | |
| 459 | @Override |
| 460 | public void handleMessage(Message msg) { |
| 461 | switch(msg.what) { |
| 462 | case MSG_INIT: { |
| 463 | init(); |
| 464 | break; |
| 465 | } |
| 466 | case MSG_ON_BOOT_COMPLETED: { |
| 467 | onBootCompletedInternal(); |
| 468 | break; |
| 469 | } |
| 470 | case MSG_PROCESS_KEYBOARD_STATE: { |
| 471 | processKeyboardState(); |
| 472 | break; |
| 473 | } |
| 474 | case MSG_ENABLE_BLUETOOTH: { |
| 475 | boolean enable = msg.arg1 == 1; |
| 476 | if (enable) { |
| 477 | mLocalBluetoothAdapter.enable(); |
| 478 | } else { |
| 479 | mState = STATE_USER_CANCELLED; |
| 480 | } |
Dmitry Torokhov | 365bf06 | 2015-11-05 17:40:32 -0800 | [diff] [blame] | 481 | break; |
| 482 | } |
| 483 | case MSG_BLE_ABORT_SCAN: { |
| 484 | int scanAttempt = msg.arg1; |
| 485 | bleAbortScanInternal(scanAttempt); |
| 486 | break; |
Michael Wright | 9209c9c | 2015-09-03 17:57:01 +0100 | [diff] [blame] | 487 | } |
| 488 | case MSG_ON_BLUETOOTH_STATE_CHANGED: { |
| 489 | int bluetoothState = msg.arg1; |
| 490 | onBluetoothStateChangedInternal(bluetoothState); |
| 491 | break; |
| 492 | } |
| 493 | case MSG_ON_DEVICE_BOND_STATE_CHANGED: { |
| 494 | CachedBluetoothDevice d = (CachedBluetoothDevice)msg.obj; |
| 495 | int bondState = msg.arg1; |
| 496 | onDeviceBondStateChangedInternal(d, bondState); |
| 497 | break; |
| 498 | } |
| 499 | case MSG_ON_BLUETOOTH_DEVICE_ADDED: { |
| 500 | BluetoothDevice d = (BluetoothDevice)msg.obj; |
| 501 | CachedBluetoothDevice cachedDevice = getCachedBluetoothDevice(d); |
| 502 | onDeviceAddedInternal(cachedDevice); |
| 503 | break; |
| 504 | |
| 505 | } |
| 506 | case MSG_ON_BLE_SCAN_FAILED: { |
| 507 | onBleScanFailedInternal(); |
| 508 | break; |
| 509 | } |
Michael Wright | 875d45a | 2015-11-26 14:10:32 +0000 | [diff] [blame] | 510 | case MSG_SHOW_ERROR: { |
| 511 | Pair<Context, String> p = (Pair<Context, String>) msg.obj; |
| 512 | onShowErrorInternal(p.first, p.second, msg.arg1); |
| 513 | } |
Michael Wright | 9209c9c | 2015-09-03 17:57:01 +0100 | [diff] [blame] | 514 | } |
| 515 | } |
| 516 | } |
| 517 | |
| 518 | private final class BluetoothDialogClickListener implements DialogInterface.OnClickListener { |
| 519 | @Override |
| 520 | public void onClick(DialogInterface dialog, int which) { |
| 521 | int enable = DialogInterface.BUTTON_POSITIVE == which ? 1 : 0; |
| 522 | mHandler.obtainMessage(MSG_ENABLE_BLUETOOTH, enable, 0).sendToTarget(); |
| 523 | mDialog = null; |
| 524 | } |
| 525 | } |
| 526 | |
Michael Wright | 875d45a | 2015-11-26 14:10:32 +0000 | [diff] [blame] | 527 | private final class BluetoothDialogDismissListener |
| 528 | implements DialogInterface.OnDismissListener { |
| 529 | @Override |
| 530 | public void onDismiss(DialogInterface dialog) { |
| 531 | mDialog = null; |
| 532 | } |
| 533 | } |
| 534 | |
Michael Wright | 9209c9c | 2015-09-03 17:57:01 +0100 | [diff] [blame] | 535 | private final class KeyboardScanCallback extends ScanCallback { |
Dmitry Torokhov | 79f00cf | 2015-10-22 10:07:53 -0700 | [diff] [blame] | 536 | |
| 537 | private boolean isDeviceDiscoverable(ScanResult result) { |
| 538 | final ScanRecord scanRecord = result.getScanRecord(); |
| 539 | final int flags = scanRecord.getAdvertiseFlags(); |
| 540 | final int BT_DISCOVERABLE_MASK = 0x03; |
| 541 | |
| 542 | return (flags & BT_DISCOVERABLE_MASK) != 0; |
| 543 | } |
| 544 | |
Michael Wright | 9209c9c | 2015-09-03 17:57:01 +0100 | [diff] [blame] | 545 | @Override |
| 546 | public void onBatchScanResults(List<ScanResult> results) { |
| 547 | if (DEBUG) { |
| 548 | Slog.d(TAG, "onBatchScanResults(" + results.size() + ")"); |
| 549 | } |
Dmitry Torokhov | 79f00cf | 2015-10-22 10:07:53 -0700 | [diff] [blame] | 550 | |
| 551 | BluetoothDevice bestDevice = null; |
| 552 | int bestRssi = Integer.MIN_VALUE; |
| 553 | |
| 554 | for (ScanResult result : results) { |
| 555 | if (DEBUG) { |
| 556 | Slog.d(TAG, "onBatchScanResults: considering " + result); |
Michael Wright | 9209c9c | 2015-09-03 17:57:01 +0100 | [diff] [blame] | 557 | } |
Dmitry Torokhov | 79f00cf | 2015-10-22 10:07:53 -0700 | [diff] [blame] | 558 | |
| 559 | if (isDeviceDiscoverable(result) && result.getRssi() > bestRssi) { |
| 560 | bestDevice = result.getDevice(); |
| 561 | bestRssi = result.getRssi(); |
| 562 | } |
| 563 | } |
| 564 | |
| 565 | if (bestDevice != null) { |
Michael Wright | 9209c9c | 2015-09-03 17:57:01 +0100 | [diff] [blame] | 566 | mHandler.obtainMessage(MSG_ON_BLUETOOTH_DEVICE_ADDED, bestDevice).sendToTarget(); |
| 567 | } |
| 568 | } |
| 569 | |
| 570 | @Override |
| 571 | public void onScanFailed(int errorCode) { |
| 572 | if (DEBUG) { |
| 573 | Slog.d(TAG, "onScanFailed(" + errorCode + ")"); |
| 574 | } |
| 575 | mHandler.obtainMessage(MSG_ON_BLE_SCAN_FAILED).sendToTarget(); |
| 576 | } |
| 577 | |
| 578 | @Override |
| 579 | public void onScanResult(int callbackType, ScanResult result) { |
| 580 | if (DEBUG) { |
| 581 | Slog.d(TAG, "onScanResult(" + callbackType + ", " + result + ")"); |
| 582 | } |
Dmitry Torokhov | 79f00cf | 2015-10-22 10:07:53 -0700 | [diff] [blame] | 583 | |
| 584 | if (isDeviceDiscoverable(result)) { |
| 585 | mHandler.obtainMessage(MSG_ON_BLUETOOTH_DEVICE_ADDED, |
| 586 | result.getDevice()).sendToTarget(); |
| 587 | } else if (DEBUG) { |
| 588 | Slog.d(TAG, "onScanResult: device " + result.getDevice() + |
| 589 | " is not discoverable, ignoring"); |
| 590 | } |
Michael Wright | 9209c9c | 2015-09-03 17:57:01 +0100 | [diff] [blame] | 591 | } |
| 592 | } |
| 593 | |
| 594 | private final class BluetoothCallbackHandler implements BluetoothCallback { |
| 595 | @Override |
| 596 | public void onBluetoothStateChanged(int bluetoothState) { |
| 597 | mHandler.obtainMessage(MSG_ON_BLUETOOTH_STATE_CHANGED, |
| 598 | bluetoothState, 0).sendToTarget(); |
| 599 | } |
| 600 | |
| 601 | @Override |
| 602 | public void onDeviceBondStateChanged(CachedBluetoothDevice cachedDevice, int bondState) { |
| 603 | mHandler.obtainMessage(MSG_ON_DEVICE_BOND_STATE_CHANGED, |
| 604 | bondState, 0, cachedDevice).sendToTarget(); |
| 605 | } |
Michael Wright | 9209c9c | 2015-09-03 17:57:01 +0100 | [diff] [blame] | 606 | } |
| 607 | |
Kunhung Li | e7b7cb8 | 2018-05-17 11:04:54 +0800 | [diff] [blame] | 608 | private final class BluetoothErrorListener implements BluetoothUtils.ErrorListener { |
Michael Wright | 875d45a | 2015-11-26 14:10:32 +0000 | [diff] [blame] | 609 | public void onShowError(Context context, String name, int messageResId) { |
| 610 | mHandler.obtainMessage(MSG_SHOW_ERROR, messageResId, 0 /*unused*/, |
| 611 | new Pair<>(context, name)).sendToTarget(); |
| 612 | } |
| 613 | } |
| 614 | |
Michael Wright | 9209c9c | 2015-09-03 17:57:01 +0100 | [diff] [blame] | 615 | private static String stateToString(int state) { |
| 616 | switch (state) { |
| 617 | case STATE_NOT_ENABLED: |
| 618 | return "STATE_NOT_ENABLED"; |
| 619 | case STATE_WAITING_FOR_BOOT_COMPLETED: |
| 620 | return "STATE_WAITING_FOR_BOOT_COMPLETED"; |
| 621 | case STATE_WAITING_FOR_TABLET_MODE_EXIT: |
| 622 | return "STATE_WAITING_FOR_TABLET_MODE_EXIT"; |
| 623 | case STATE_WAITING_FOR_DEVICE_DISCOVERY: |
| 624 | return "STATE_WAITING_FOR_DEVICE_DISCOVERY"; |
| 625 | case STATE_WAITING_FOR_BLUETOOTH: |
| 626 | return "STATE_WAITING_FOR_BLUETOOTH"; |
Michael Wright | 9209c9c | 2015-09-03 17:57:01 +0100 | [diff] [blame] | 627 | case STATE_PAIRING: |
| 628 | return "STATE_PAIRING"; |
| 629 | case STATE_PAIRED: |
| 630 | return "STATE_PAIRED"; |
Michael Wright | 875d45a | 2015-11-26 14:10:32 +0000 | [diff] [blame] | 631 | case STATE_PAIRING_FAILED: |
| 632 | return "STATE_PAIRING_FAILED"; |
Michael Wright | 9209c9c | 2015-09-03 17:57:01 +0100 | [diff] [blame] | 633 | case STATE_USER_CANCELLED: |
| 634 | return "STATE_USER_CANCELLED"; |
| 635 | case STATE_DEVICE_NOT_FOUND: |
| 636 | return "STATE_DEVICE_NOT_FOUND"; |
| 637 | case STATE_UNKNOWN: |
| 638 | default: |
Michael Wright | 875d45a | 2015-11-26 14:10:32 +0000 | [diff] [blame] | 639 | return "STATE_UNKNOWN (" + state + ")"; |
Michael Wright | 9209c9c | 2015-09-03 17:57:01 +0100 | [diff] [blame] | 640 | } |
| 641 | } |
| 642 | } |