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