KeyguardViewMediator.java revision caf24fc2c4bb9747eb80138bf3ce0be067851749
1/* 2 * Copyright (C) 2007 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 17package com.android.keyguard; 18 19import com.android.internal.policy.IKeyguardExitCallback; 20import com.android.internal.policy.IKeyguardShowCallback; 21import static android.provider.Settings.System.SCREEN_OFF_TIMEOUT; 22 23import android.app.Activity; 24import android.app.ActivityManagerNative; 25import android.app.AlarmManager; 26import android.app.PendingIntent; 27import android.app.SearchManager; 28import android.app.StatusBarManager; 29import android.content.BroadcastReceiver; 30import android.content.ContentResolver; 31import android.content.Context; 32import android.content.Intent; 33import android.content.IntentFilter; 34import android.media.AudioManager; 35import android.media.SoundPool; 36import android.os.Bundle; 37import android.os.Handler; 38import android.os.Looper; 39import android.os.Message; 40import android.os.PowerManager; 41import android.os.RemoteException; 42import android.os.SystemClock; 43import android.os.SystemProperties; 44import android.os.UserHandle; 45import android.os.UserManager; 46import android.provider.Settings; 47import android.telephony.TelephonyManager; 48import android.util.EventLog; 49import android.util.Log; 50import android.util.Slog; 51import android.view.KeyEvent; 52import android.view.MotionEvent; 53import android.view.WindowManager; 54import android.view.WindowManagerPolicy; 55 56import com.android.internal.telephony.IccCardConstants; 57import com.android.internal.widget.LockPatternUtils; 58 59 60/** 61 * Mediates requests related to the keyguard. This includes queries about the 62 * state of the keyguard, power management events that effect whether the keyguard 63 * should be shown or reset, callbacks to the phone window manager to notify 64 * it of when the keyguard is showing, and events from the keyguard view itself 65 * stating that the keyguard was succesfully unlocked. 66 * 67 * Note that the keyguard view is shown when the screen is off (as appropriate) 68 * so that once the screen comes on, it will be ready immediately. 69 * 70 * Example queries about the keyguard: 71 * - is {movement, key} one that should wake the keygaurd? 72 * - is the keyguard showing? 73 * - are input events restricted due to the state of the keyguard? 74 * 75 * Callbacks to the phone window manager: 76 * - the keyguard is showing 77 * 78 * Example external events that translate to keyguard view changes: 79 * - screen turned off -> reset the keyguard, and show it so it will be ready 80 * next time the screen turns on 81 * - keyboard is slid open -> if the keyguard is not secure, hide it 82 * 83 * Events from the keyguard view: 84 * - user succesfully unlocked keyguard -> hide keyguard view, and no longer 85 * restrict input events. 86 * 87 * Note: in addition to normal power managment events that effect the state of 88 * whether the keyguard should be showing, external apps and services may request 89 * that the keyguard be disabled via {@link #setKeyguardEnabled(boolean)}. When 90 * false, this will override all other conditions for turning on the keyguard. 91 * 92 * Threading and synchronization: 93 * This class is created by the initialization routine of the {@link WindowManagerPolicy}, 94 * and runs on its thread. The keyguard UI is created from that thread in the 95 * constructor of this class. The apis may be called from other threads, including the 96 * {@link com.android.server.input.InputManagerService}'s and {@link android.view.WindowManager}'s. 97 * Therefore, methods on this class are synchronized, and any action that is pointed 98 * directly to the keyguard UI is posted to a {@link Handler} to ensure it is taken on the UI 99 * thread of the keyguard. 100 */ 101public class KeyguardViewMediator { 102 private static final int KEYGUARD_DISPLAY_TIMEOUT_DELAY_DEFAULT = 30000; 103 final static boolean DEBUG = false; 104 private final static boolean DBG_WAKE = false; 105 106 private final static String TAG = "KeyguardViewMediator"; 107 108 private static final String DELAYED_KEYGUARD_ACTION = 109 "com.android.internal.policy.impl.PhoneWindowManager.DELAYED_KEYGUARD"; 110 111 // used for handler messages 112 private static final int SHOW = 2; 113 private static final int HIDE = 3; 114 private static final int RESET = 4; 115 private static final int VERIFY_UNLOCK = 5; 116 private static final int NOTIFY_SCREEN_OFF = 6; 117 private static final int NOTIFY_SCREEN_ON = 7; 118 private static final int KEYGUARD_DONE = 9; 119 private static final int KEYGUARD_DONE_DRAWING = 10; 120 private static final int KEYGUARD_DONE_AUTHENTICATING = 11; 121 private static final int SET_HIDDEN = 12; 122 private static final int KEYGUARD_TIMEOUT = 13; 123 private static final int SHOW_ASSISTANT = 14; 124 private static final int DISPATCH_EVENT = 15; 125 126 /** 127 * The default amount of time we stay awake (used for all key input) 128 */ 129 protected static final int AWAKE_INTERVAL_DEFAULT_MS = 10000; 130 131 /** 132 * How long to wait after the screen turns off due to timeout before 133 * turning on the keyguard (i.e, the user has this much time to turn 134 * the screen back on without having to face the keyguard). 135 */ 136 private static final int KEYGUARD_LOCK_AFTER_DELAY_DEFAULT = 5000; 137 138 /** 139 * How long we'll wait for the {@link ViewMediatorCallback#keyguardDoneDrawing()} 140 * callback before unblocking a call to {@link #setKeyguardEnabled(boolean)} 141 * that is reenabling the keyguard. 142 */ 143 private static final int KEYGUARD_DONE_DRAWING_TIMEOUT_MS = 2000; 144 145 /** 146 * Allow the user to expand the status bar when the keyguard is engaged 147 * (without a pattern or password). 148 */ 149 private static final boolean ENABLE_INSECURE_STATUS_BAR_EXPAND = true; 150 151 /** The stream type that the lock sounds are tied to. */ 152 private int mMasterStreamType; 153 154 private Context mContext; 155 private AlarmManager mAlarmManager; 156 private AudioManager mAudioManager; 157 private StatusBarManager mStatusBarManager; 158 private boolean mSwitchingUser; 159 160 private boolean mSystemReady; 161 162 // Whether the next call to playSounds() should be skipped. Defaults to 163 // true because the first lock (on boot) should be silent. 164 private boolean mSuppressNextLockSound = true; 165 166 167 /** High level access to the power manager for WakeLocks */ 168 private PowerManager mPM; 169 170 /** UserManager for querying number of users */ 171 private UserManager mUserManager; 172 173 /** SearchManager for determining whether or not search assistant is available */ 174 private SearchManager mSearchManager; 175 176 /** 177 * Used to keep the device awake while to ensure the keyguard finishes opening before 178 * we sleep. 179 */ 180 private PowerManager.WakeLock mShowKeyguardWakeLock; 181 182 private KeyguardViewManager mKeyguardViewManager; 183 184 // these are protected by synchronized (this) 185 186 /** 187 * External apps (like the phone app) can tell us to disable the keygaurd. 188 */ 189 private boolean mExternallyEnabled = true; 190 191 /** 192 * Remember if an external call to {@link #setKeyguardEnabled} with value 193 * false caused us to hide the keyguard, so that we need to reshow it once 194 * the keygaurd is reenabled with another call with value true. 195 */ 196 private boolean mNeedToReshowWhenReenabled = false; 197 198 // cached value of whether we are showing (need to know this to quickly 199 // answer whether the input should be restricted) 200 private boolean mShowing = false; 201 202 // true if the keyguard is hidden by another window 203 private boolean mHidden = false; 204 205 /** 206 * Helps remember whether the screen has turned on since the last time 207 * it turned off due to timeout. see {@link #onScreenTurnedOff(int)} 208 */ 209 private int mDelayedShowingSequence; 210 211 /** 212 * If the user has disabled the keyguard, then requests to exit, this is 213 * how we'll ultimately let them know whether it was successful. We use this 214 * var being non-null as an indicator that there is an in progress request. 215 */ 216 private IKeyguardExitCallback mExitSecureCallback; 217 218 // the properties of the keyguard 219 220 private KeyguardUpdateMonitor mUpdateMonitor; 221 222 private boolean mScreenOn; 223 224 // last known state of the cellular connection 225 private String mPhoneState = TelephonyManager.EXTRA_STATE_IDLE; 226 227 /** 228 * we send this intent when the keyguard is dismissed. 229 */ 230 private static final Intent USER_PRESENT_INTENT = new Intent(Intent.ACTION_USER_PRESENT) 231 .addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING 232 | Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 233 234 /** 235 * {@link #setKeyguardEnabled} waits on this condition when it reenables 236 * the keyguard. 237 */ 238 private boolean mWaitingUntilKeyguardVisible = false; 239 private LockPatternUtils mLockPatternUtils; 240 private boolean mKeyguardDonePending = false; 241 242 private SoundPool mLockSounds; 243 private int mLockSoundId; 244 private int mUnlockSoundId; 245 private int mLockSoundStreamId; 246 247 /** 248 * The volume applied to the lock/unlock sounds. 249 */ 250 private final float mLockSoundVolume; 251 252 /** 253 * Cache of avatar drawables, for use by KeyguardMultiUserAvatar. 254 */ 255 private static MultiUserAvatarCache sMultiUserAvatarCache = new MultiUserAvatarCache(); 256 257 /** 258 * The callback used by the keyguard view to tell the {@link KeyguardViewMediator} 259 * various things. 260 */ 261 public interface ViewMediatorCallback { 262 /** 263 * Reports user activity and requests that the screen stay on. 264 */ 265 void userActivity(); 266 267 /** 268 * Reports user activity and requests that the screen stay on for at least 269 * the specified amount of time. 270 * @param millis The amount of time in millis. This value is currently ignored. 271 */ 272 void userActivity(long millis); 273 274 /** 275 * Report that the keyguard is done. 276 * @param authenticated Whether the user securely got past the keyguard. 277 * the only reason for this to be false is if the keyguard was instructed 278 * to appear temporarily to verify the user is supposed to get past the 279 * keyguard, and the user fails to do so. 280 */ 281 void keyguardDone(boolean authenticated); 282 283 /** 284 * Report that the keyguard is done drawing. 285 */ 286 void keyguardDoneDrawing(); 287 288 /** 289 * Tell ViewMediator that the current view needs IME input 290 * @param needsInput 291 */ 292 void setNeedsInput(boolean needsInput); 293 294 /** 295 * Tell view mediator that the keyguard view's desired user activity timeout 296 * has changed and needs to be reapplied to the window. 297 */ 298 void onUserActivityTimeoutChanged(); 299 300 /** 301 * Report that the keyguard is dismissable, pending the next keyguardDone call. 302 */ 303 void keyguardDonePending(); 304 } 305 306 KeyguardUpdateMonitorCallback mUpdateCallback = new KeyguardUpdateMonitorCallback() { 307 308 @Override 309 public void onUserSwitching(int userId) { 310 // Note that the mLockPatternUtils user has already been updated from setCurrentUser. 311 // We need to force a reset of the views, since lockNow (called by 312 // ActivityManagerService) will not reconstruct the keyguard if it is already showing. 313 synchronized (KeyguardViewMediator.this) { 314 mSwitchingUser = true; 315 resetStateLocked(null); 316 adjustStatusBarLocked(); 317 // When we switch users we want to bring the new user to the biometric unlock even 318 // if the current user has gone to the backup. 319 KeyguardUpdateMonitor.getInstance(mContext).setAlternateUnlockEnabled(true); 320 } 321 } 322 323 @Override 324 public void onUserSwitchComplete(int userId) { 325 mSwitchingUser = false; 326 } 327 328 @Override 329 public void onUserRemoved(int userId) { 330 mLockPatternUtils.removeUser(userId); 331 sMultiUserAvatarCache.clear(userId); 332 } 333 334 @Override 335 public void onUserInfoChanged(int userId) { 336 sMultiUserAvatarCache.clear(userId); 337 } 338 339 @Override 340 void onPhoneStateChanged(int phoneState) { 341 synchronized (KeyguardViewMediator.this) { 342 if (TelephonyManager.CALL_STATE_IDLE == phoneState // call ending 343 && !mScreenOn // screen off 344 && mExternallyEnabled) { // not disabled by any app 345 346 // note: this is a way to gracefully reenable the keyguard when the call 347 // ends and the screen is off without always reenabling the keyguard 348 // each time the screen turns off while in call (and having an occasional ugly 349 // flicker while turning back on the screen and disabling the keyguard again). 350 if (DEBUG) Log.d(TAG, "screen is off and call ended, let's make sure the " 351 + "keyguard is showing"); 352 doKeyguardLocked(null); 353 } 354 } 355 }; 356 357 @Override 358 public void onClockVisibilityChanged() { 359 adjustStatusBarLocked(); 360 } 361 362 @Override 363 public void onDeviceProvisioned() { 364 sendUserPresentBroadcast(); 365 } 366 367 @Override 368 public void onSimStateChanged(IccCardConstants.State simState) { 369 if (DEBUG) Log.d(TAG, "onSimStateChanged: " + simState); 370 371 switch (simState) { 372 case NOT_READY: 373 case ABSENT: 374 // only force lock screen in case of missing sim if user hasn't 375 // gone through setup wizard 376 synchronized (this) { 377 if (!mUpdateMonitor.isDeviceProvisioned()) { 378 if (!isShowing()) { 379 if (DEBUG) Log.d(TAG, "ICC_ABSENT isn't showing," 380 + " we need to show the keyguard since the " 381 + "device isn't provisioned yet."); 382 doKeyguardLocked(null); 383 } else { 384 resetStateLocked(null); 385 } 386 } 387 } 388 break; 389 case PIN_REQUIRED: 390 case PUK_REQUIRED: 391 synchronized (this) { 392 if (!isShowing()) { 393 if (DEBUG) Log.d(TAG, "INTENT_VALUE_ICC_LOCKED and keygaurd isn't " 394 + "showing; need to show keyguard so user can enter sim pin"); 395 doKeyguardLocked(null); 396 } else { 397 resetStateLocked(null); 398 } 399 } 400 break; 401 case PERM_DISABLED: 402 synchronized (this) { 403 if (!isShowing()) { 404 if (DEBUG) Log.d(TAG, "PERM_DISABLED and " 405 + "keygaurd isn't showing."); 406 doKeyguardLocked(null); 407 } else { 408 if (DEBUG) Log.d(TAG, "PERM_DISABLED, resetStateLocked to" 409 + "show permanently disabled message in lockscreen."); 410 resetStateLocked(null); 411 } 412 } 413 break; 414 case READY: 415 synchronized (this) { 416 if (isShowing()) { 417 resetStateLocked(null); 418 } 419 } 420 break; 421 } 422 } 423 424 }; 425 426 ViewMediatorCallback mViewMediatorCallback = new ViewMediatorCallback() { 427 public void userActivity() { 428 KeyguardViewMediator.this.userActivity(); 429 } 430 431 public void userActivity(long holdMs) { 432 KeyguardViewMediator.this.userActivity(holdMs); 433 } 434 435 public void keyguardDone(boolean authenticated) { 436 KeyguardViewMediator.this.keyguardDone(authenticated, true); 437 } 438 439 public void keyguardDoneDrawing() { 440 mHandler.sendEmptyMessage(KEYGUARD_DONE_DRAWING); 441 } 442 443 @Override 444 public void setNeedsInput(boolean needsInput) { 445 mKeyguardViewManager.setNeedsInput(needsInput); 446 } 447 448 @Override 449 public void onUserActivityTimeoutChanged() { 450 mKeyguardViewManager.updateUserActivityTimeout(); 451 } 452 453 @Override 454 public void keyguardDonePending() { 455 mKeyguardDonePending = true; 456 } 457 }; 458 459 private void userActivity() { 460 userActivity(AWAKE_INTERVAL_DEFAULT_MS); 461 } 462 463 public void userActivity(long holdMs) { 464 // We ignore the hold time. Eventually we should remove it. 465 // Instead, the keyguard window has an explicit user activity timeout set on it. 466 mPM.userActivity(SystemClock.uptimeMillis(), false); 467 } 468 469 /** 470 * Construct a KeyguardViewMediator 471 * @param context 472 * @param lockPatternUtils optional mock interface for LockPatternUtils 473 */ 474 public KeyguardViewMediator(Context context, LockPatternUtils lockPatternUtils) { 475 mContext = context; 476 mPM = (PowerManager) context.getSystemService(Context.POWER_SERVICE); 477 mUserManager = (UserManager) mContext.getSystemService(Context.USER_SERVICE); 478 mShowKeyguardWakeLock = mPM.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "show keyguard"); 479 mShowKeyguardWakeLock.setReferenceCounted(false); 480 481 mContext.registerReceiver(mBroadcastReceiver, new IntentFilter(DELAYED_KEYGUARD_ACTION)); 482 483 mAlarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE); 484 485 mUpdateMonitor = KeyguardUpdateMonitor.getInstance(context); 486 487 mLockPatternUtils = lockPatternUtils != null 488 ? lockPatternUtils : new LockPatternUtils(mContext); 489 mLockPatternUtils.setCurrentUser(UserHandle.USER_OWNER); 490 491 WindowManager wm = (WindowManager)context.getSystemService(Context.WINDOW_SERVICE); 492 493 mKeyguardViewManager = new KeyguardViewManager(context, wm, mViewMediatorCallback, 494 mLockPatternUtils); 495 496 final ContentResolver cr = mContext.getContentResolver(); 497 498 mScreenOn = mPM.isScreenOn(); 499 500 mLockSounds = new SoundPool(1, AudioManager.STREAM_SYSTEM, 0); 501 String soundPath = Settings.Global.getString(cr, Settings.Global.LOCK_SOUND); 502 if (soundPath != null) { 503 mLockSoundId = mLockSounds.load(soundPath, 1); 504 } 505 if (soundPath == null || mLockSoundId == 0) { 506 Log.w(TAG, "failed to load lock sound from " + soundPath); 507 } 508 soundPath = Settings.Global.getString(cr, Settings.Global.UNLOCK_SOUND); 509 if (soundPath != null) { 510 mUnlockSoundId = mLockSounds.load(soundPath, 1); 511 } 512 if (soundPath == null || mUnlockSoundId == 0) { 513 Log.w(TAG, "failed to load unlock sound from " + soundPath); 514 } 515 int lockSoundDefaultAttenuation = context.getResources().getInteger( 516 com.android.internal.R.integer.config_lockSoundVolumeDb); 517 mLockSoundVolume = (float)Math.pow(10, (float)lockSoundDefaultAttenuation/20); 518 } 519 520 /** 521 * Let us know that the system is ready after startup. 522 */ 523 public void onSystemReady() { 524 mSearchManager = (SearchManager) mContext.getSystemService(Context.SEARCH_SERVICE); 525 synchronized (this) { 526 if (DEBUG) Log.d(TAG, "onSystemReady"); 527 mSystemReady = true; 528 mUpdateMonitor.registerCallback(mUpdateCallback); 529 530 // Suppress biometric unlock right after boot until things have settled if it is the 531 // selected security method, otherwise unsuppress it. It must be unsuppressed if it is 532 // not the selected security method for the following reason: if the user starts 533 // without a screen lock selected, the biometric unlock would be suppressed the first 534 // time they try to use it. 535 // 536 // Note that the biometric unlock will still not show if it is not the selected method. 537 // Calling setAlternateUnlockEnabled(true) simply says don't suppress it if it is the 538 // selected method. 539 if (mLockPatternUtils.usingBiometricWeak() 540 && mLockPatternUtils.isBiometricWeakInstalled()) { 541 if (DEBUG) Log.d(TAG, "suppressing biometric unlock during boot"); 542 mUpdateMonitor.setAlternateUnlockEnabled(false); 543 } else { 544 mUpdateMonitor.setAlternateUnlockEnabled(true); 545 } 546 547 doKeyguardLocked(null); 548 } 549 // Most services aren't available until the system reaches the ready state, so we 550 // send it here when the device first boots. 551 maybeSendUserPresentBroadcast(); 552 } 553 554 /** 555 * Called to let us know the screen was turned off. 556 * @param why either {@link WindowManagerPolicy#OFF_BECAUSE_OF_USER}, 557 * {@link WindowManagerPolicy#OFF_BECAUSE_OF_TIMEOUT} or 558 * {@link WindowManagerPolicy#OFF_BECAUSE_OF_PROX_SENSOR}. 559 */ 560 public void onScreenTurnedOff(int why) { 561 synchronized (this) { 562 mScreenOn = false; 563 if (DEBUG) Log.d(TAG, "onScreenTurnedOff(" + why + ")"); 564 565 mKeyguardDonePending = false; 566 567 // Lock immediately based on setting if secure (user has a pin/pattern/password). 568 // This also "locks" the device when not secure to provide easy access to the 569 // camera while preventing unwanted input. 570 final boolean lockImmediately = 571 mLockPatternUtils.getPowerButtonInstantlyLocks() || !mLockPatternUtils.isSecure(); 572 573 if (mExitSecureCallback != null) { 574 if (DEBUG) Log.d(TAG, "pending exit secure callback cancelled"); 575 try { 576 mExitSecureCallback.onKeyguardExitResult(false); 577 } catch (RemoteException e) { 578 Slog.w(TAG, "Failed to call onKeyguardExitResult(false)", e); 579 } 580 mExitSecureCallback = null; 581 if (!mExternallyEnabled) { 582 hideLocked(); 583 } 584 } else if (mShowing) { 585 notifyScreenOffLocked(); 586 resetStateLocked(null); 587 } else if (why == WindowManagerPolicy.OFF_BECAUSE_OF_TIMEOUT 588 || (why == WindowManagerPolicy.OFF_BECAUSE_OF_USER && !lockImmediately)) { 589 doKeyguardLaterLocked(); 590 } else if (why == WindowManagerPolicy.OFF_BECAUSE_OF_PROX_SENSOR) { 591 // Do not enable the keyguard if the prox sensor forced the screen off. 592 } else { 593 doKeyguardLocked(null); 594 } 595 } 596 } 597 598 private void doKeyguardLaterLocked() { 599 // if the screen turned off because of timeout or the user hit the power button 600 // and we don't need to lock immediately, set an alarm 601 // to enable it a little bit later (i.e, give the user a chance 602 // to turn the screen back on within a certain window without 603 // having to unlock the screen) 604 final ContentResolver cr = mContext.getContentResolver(); 605 606 // From DisplaySettings 607 long displayTimeout = Settings.System.getInt(cr, SCREEN_OFF_TIMEOUT, 608 KEYGUARD_DISPLAY_TIMEOUT_DELAY_DEFAULT); 609 610 // From SecuritySettings 611 final long lockAfterTimeout = Settings.Secure.getInt(cr, 612 Settings.Secure.LOCK_SCREEN_LOCK_AFTER_TIMEOUT, 613 KEYGUARD_LOCK_AFTER_DELAY_DEFAULT); 614 615 // From DevicePolicyAdmin 616 final long policyTimeout = mLockPatternUtils.getDevicePolicyManager() 617 .getMaximumTimeToLock(null, mLockPatternUtils.getCurrentUser()); 618 619 long timeout; 620 if (policyTimeout > 0) { 621 // policy in effect. Make sure we don't go beyond policy limit. 622 displayTimeout = Math.max(displayTimeout, 0); // ignore negative values 623 timeout = Math.min(policyTimeout - displayTimeout, lockAfterTimeout); 624 } else { 625 timeout = lockAfterTimeout; 626 } 627 628 if (timeout <= 0) { 629 // Lock now 630 mSuppressNextLockSound = true; 631 doKeyguardLocked(null); 632 } else { 633 // Lock in the future 634 long when = SystemClock.elapsedRealtime() + timeout; 635 Intent intent = new Intent(DELAYED_KEYGUARD_ACTION); 636 intent.putExtra("seq", mDelayedShowingSequence); 637 PendingIntent sender = PendingIntent.getBroadcast(mContext, 638 0, intent, PendingIntent.FLAG_CANCEL_CURRENT); 639 mAlarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, when, sender); 640 if (DEBUG) Log.d(TAG, "setting alarm to turn off keyguard, seq = " 641 + mDelayedShowingSequence); 642 } 643 } 644 645 private void cancelDoKeyguardLaterLocked() { 646 mDelayedShowingSequence++; 647 } 648 649 /** 650 * Let's us know the screen was turned on. 651 */ 652 public void onScreenTurnedOn(IKeyguardShowCallback callback) { 653 synchronized (this) { 654 mScreenOn = true; 655 cancelDoKeyguardLaterLocked(); 656 if (DEBUG) Log.d(TAG, "onScreenTurnedOn, seq = " + mDelayedShowingSequence); 657 if (callback != null) { 658 notifyScreenOnLocked(callback); 659 } 660 } 661 maybeSendUserPresentBroadcast(); 662 } 663 664 private void maybeSendUserPresentBroadcast() { 665 if (mSystemReady && mLockPatternUtils.isLockScreenDisabled() 666 && mUserManager.getUsers(true).size() == 1) { 667 // Lock screen is disabled because the user has set the preference to "None". 668 // In this case, send out ACTION_USER_PRESENT here instead of in 669 // handleKeyguardDone() 670 sendUserPresentBroadcast(); 671 } 672 } 673 674 /** 675 * A dream started. We should lock after the usual screen-off lock timeout but only 676 * if there is a secure lock pattern. 677 */ 678 public void onDreamingStarted() { 679 synchronized (this) { 680 if (mScreenOn && mLockPatternUtils.isSecure()) { 681 doKeyguardLaterLocked(); 682 } 683 } 684 } 685 686 /** 687 * A dream stopped. 688 */ 689 public void onDreamingStopped() { 690 synchronized (this) { 691 if (mScreenOn) { 692 cancelDoKeyguardLaterLocked(); 693 } 694 } 695 } 696 697 /** 698 * Same semantics as {@link WindowManagerPolicy#enableKeyguard}; provide 699 * a way for external stuff to override normal keyguard behavior. For instance 700 * the phone app disables the keyguard when it receives incoming calls. 701 */ 702 public void setKeyguardEnabled(boolean enabled) { 703 synchronized (this) { 704 if (DEBUG) Log.d(TAG, "setKeyguardEnabled(" + enabled + ")"); 705 706 mExternallyEnabled = enabled; 707 708 if (!enabled && mShowing) { 709 if (mExitSecureCallback != null) { 710 if (DEBUG) Log.d(TAG, "in process of verifyUnlock request, ignoring"); 711 // we're in the process of handling a request to verify the user 712 // can get past the keyguard. ignore extraneous requests to disable / reenable 713 return; 714 } 715 716 // hiding keyguard that is showing, remember to reshow later 717 if (DEBUG) Log.d(TAG, "remembering to reshow, hiding keyguard, " 718 + "disabling status bar expansion"); 719 mNeedToReshowWhenReenabled = true; 720 hideLocked(); 721 } else if (enabled && mNeedToReshowWhenReenabled) { 722 // reenabled after previously hidden, reshow 723 if (DEBUG) Log.d(TAG, "previously hidden, reshowing, reenabling " 724 + "status bar expansion"); 725 mNeedToReshowWhenReenabled = false; 726 727 if (mExitSecureCallback != null) { 728 if (DEBUG) Log.d(TAG, "onKeyguardExitResult(false), resetting"); 729 try { 730 mExitSecureCallback.onKeyguardExitResult(false); 731 } catch (RemoteException e) { 732 Slog.w(TAG, "Failed to call onKeyguardExitResult(false)", e); 733 } 734 mExitSecureCallback = null; 735 resetStateLocked(null); 736 } else { 737 showLocked(null); 738 739 // block until we know the keygaurd is done drawing (and post a message 740 // to unblock us after a timeout so we don't risk blocking too long 741 // and causing an ANR). 742 mWaitingUntilKeyguardVisible = true; 743 mHandler.sendEmptyMessageDelayed(KEYGUARD_DONE_DRAWING, KEYGUARD_DONE_DRAWING_TIMEOUT_MS); 744 if (DEBUG) Log.d(TAG, "waiting until mWaitingUntilKeyguardVisible is false"); 745 while (mWaitingUntilKeyguardVisible) { 746 try { 747 wait(); 748 } catch (InterruptedException e) { 749 Thread.currentThread().interrupt(); 750 } 751 } 752 if (DEBUG) Log.d(TAG, "done waiting for mWaitingUntilKeyguardVisible"); 753 } 754 } 755 } 756 } 757 758 /** 759 * @see android.app.KeyguardManager#exitKeyguardSecurely 760 */ 761 public void verifyUnlock(IKeyguardExitCallback callback) { 762 synchronized (this) { 763 if (DEBUG) Log.d(TAG, "verifyUnlock"); 764 if (!mUpdateMonitor.isDeviceProvisioned()) { 765 // don't allow this api when the device isn't provisioned 766 if (DEBUG) Log.d(TAG, "ignoring because device isn't provisioned"); 767 try { 768 callback.onKeyguardExitResult(false); 769 } catch (RemoteException e) { 770 Slog.w(TAG, "Failed to call onKeyguardExitResult(false)", e); 771 } 772 } else if (mExternallyEnabled) { 773 // this only applies when the user has externally disabled the 774 // keyguard. this is unexpected and means the user is not 775 // using the api properly. 776 Log.w(TAG, "verifyUnlock called when not externally disabled"); 777 try { 778 callback.onKeyguardExitResult(false); 779 } catch (RemoteException e) { 780 Slog.w(TAG, "Failed to call onKeyguardExitResult(false)", e); 781 } 782 } else if (mExitSecureCallback != null) { 783 // already in progress with someone else 784 try { 785 callback.onKeyguardExitResult(false); 786 } catch (RemoteException e) { 787 Slog.w(TAG, "Failed to call onKeyguardExitResult(false)", e); 788 } 789 } else { 790 mExitSecureCallback = callback; 791 verifyUnlockLocked(); 792 } 793 } 794 } 795 796 /** 797 * Is the keyguard currently showing? 798 */ 799 public boolean isShowing() { 800 return mShowing; 801 } 802 803 /** 804 * Is the keyguard currently showing and not being force hidden? 805 */ 806 public boolean isShowingAndNotHidden() { 807 return mShowing && !mHidden; 808 } 809 810 /** 811 * Notify us when the keyguard is hidden by another window 812 */ 813 public void setHidden(boolean isHidden) { 814 if (DEBUG) Log.d(TAG, "setHidden " + isHidden); 815 mUpdateMonitor.sendKeyguardVisibilityChanged(!isHidden); 816 mHandler.removeMessages(SET_HIDDEN); 817 Message msg = mHandler.obtainMessage(SET_HIDDEN, (isHidden ? 1 : 0), 0); 818 mHandler.sendMessage(msg); 819 } 820 821 /** 822 * Handles SET_HIDDEN message sent by setHidden() 823 */ 824 private void handleSetHidden(boolean isHidden) { 825 synchronized (KeyguardViewMediator.this) { 826 if (mHidden != isHidden) { 827 mHidden = isHidden; 828 updateActivityLockScreenState(); 829 adjustStatusBarLocked(); 830 } 831 } 832 } 833 834 /** 835 * Used by PhoneWindowManager to enable the keyguard due to a user activity timeout. 836 * This must be safe to call from any thread and with any window manager locks held. 837 */ 838 public void doKeyguardTimeout(Bundle options) { 839 mHandler.removeMessages(KEYGUARD_TIMEOUT); 840 Message msg = mHandler.obtainMessage(KEYGUARD_TIMEOUT, options); 841 mHandler.sendMessage(msg); 842 } 843 844 /** 845 * Given the state of the keyguard, is the input restricted? 846 * Input is restricted when the keyguard is showing, or when the keyguard 847 * was suppressed by an app that disabled the keyguard or we haven't been provisioned yet. 848 */ 849 public boolean isInputRestricted() { 850 return mShowing || mNeedToReshowWhenReenabled || !mUpdateMonitor.isDeviceProvisioned(); 851 } 852 853 /** 854 * Enable the keyguard if the settings are appropriate. 855 */ 856 private void doKeyguardLocked(Bundle options) { 857 // if another app is disabling us, don't show 858 if (!mExternallyEnabled) { 859 if (DEBUG) Log.d(TAG, "doKeyguard: not showing because externally disabled"); 860 861 // note: we *should* set mNeedToReshowWhenReenabled=true here, but that makes 862 // for an occasional ugly flicker in this situation: 863 // 1) receive a call with the screen on (no keyguard) or make a call 864 // 2) screen times out 865 // 3) user hits key to turn screen back on 866 // instead, we reenable the keyguard when we know the screen is off and the call 867 // ends (see the broadcast receiver below) 868 // TODO: clean this up when we have better support at the window manager level 869 // for apps that wish to be on top of the keyguard 870 return; 871 } 872 873 // if the keyguard is already showing, don't bother 874 if (mKeyguardViewManager.isShowing()) { 875 if (DEBUG) Log.d(TAG, "doKeyguard: not showing because it is already showing"); 876 return; 877 } 878 879 // if the setup wizard hasn't run yet, don't show 880 final boolean requireSim = !SystemProperties.getBoolean("keyguard.no_require_sim", 881 false); 882 final boolean provisioned = mUpdateMonitor.isDeviceProvisioned(); 883 final IccCardConstants.State state = mUpdateMonitor.getSimState(); 884 final boolean lockedOrMissing = state.isPinLocked() 885 || ((state == IccCardConstants.State.ABSENT 886 || state == IccCardConstants.State.PERM_DISABLED) 887 && requireSim); 888 889 if (!lockedOrMissing && !provisioned) { 890 if (DEBUG) Log.d(TAG, "doKeyguard: not showing because device isn't provisioned" 891 + " and the sim is not locked or missing"); 892 return; 893 } 894 895 if (mUserManager.getUsers(true).size() < 2 896 && mLockPatternUtils.isLockScreenDisabled() && !lockedOrMissing) { 897 if (DEBUG) Log.d(TAG, "doKeyguard: not showing because lockscreen is off"); 898 return; 899 } 900 901 if (DEBUG) Log.d(TAG, "doKeyguard: showing the lock screen"); 902 showLocked(options); 903 } 904 905 /** 906 * Dismiss the keyguard through the security layers. 907 */ 908 public void dismiss() { 909 if (mShowing && !mHidden) { 910 mKeyguardViewManager.dismiss(); 911 } 912 } 913 914 /** 915 * Send message to keyguard telling it to reset its state. 916 * @param options options about how to show the keyguard 917 * @see #handleReset() 918 */ 919 private void resetStateLocked(Bundle options) { 920 if (DEBUG) Log.e(TAG, "resetStateLocked"); 921 Message msg = mHandler.obtainMessage(RESET, options); 922 mHandler.sendMessage(msg); 923 } 924 925 /** 926 * Send message to keyguard telling it to verify unlock 927 * @see #handleVerifyUnlock() 928 */ 929 private void verifyUnlockLocked() { 930 if (DEBUG) Log.d(TAG, "verifyUnlockLocked"); 931 mHandler.sendEmptyMessage(VERIFY_UNLOCK); 932 } 933 934 935 /** 936 * Send a message to keyguard telling it the screen just turned on. 937 * @see #onScreenTurnedOff(int) 938 * @see #handleNotifyScreenOff 939 */ 940 private void notifyScreenOffLocked() { 941 if (DEBUG) Log.d(TAG, "notifyScreenOffLocked"); 942 mHandler.sendEmptyMessage(NOTIFY_SCREEN_OFF); 943 } 944 945 /** 946 * Send a message to keyguard telling it the screen just turned on. 947 * @see #onScreenTurnedOn() 948 * @see #handleNotifyScreenOn 949 */ 950 private void notifyScreenOnLocked(IKeyguardShowCallback result) { 951 if (DEBUG) Log.d(TAG, "notifyScreenOnLocked"); 952 Message msg = mHandler.obtainMessage(NOTIFY_SCREEN_ON, result); 953 mHandler.sendMessage(msg); 954 } 955 956 /** 957 * Send message to keyguard telling it to show itself 958 * @see #handleShow() 959 */ 960 private void showLocked(Bundle options) { 961 if (DEBUG) Log.d(TAG, "showLocked"); 962 // ensure we stay awake until we are finished displaying the keyguard 963 mShowKeyguardWakeLock.acquire(); 964 Message msg = mHandler.obtainMessage(SHOW, options); 965 mHandler.sendMessage(msg); 966 } 967 968 /** 969 * Send message to keyguard telling it to hide itself 970 * @see #handleHide() 971 */ 972 private void hideLocked() { 973 if (DEBUG) Log.d(TAG, "hideLocked"); 974 Message msg = mHandler.obtainMessage(HIDE); 975 mHandler.sendMessage(msg); 976 } 977 978 public boolean isSecure() { 979 return mLockPatternUtils.isSecure() 980 || KeyguardUpdateMonitor.getInstance(mContext).isSimPinSecure(); 981 } 982 983 /** 984 * Update the newUserId. Call while holding WindowManagerService lock. 985 * NOTE: Should only be called by KeyguardViewMediator in response to the user id changing. 986 * 987 * @param newUserId The id of the incoming user. 988 */ 989 public void setCurrentUser(int newUserId) { 990 mLockPatternUtils.setCurrentUser(newUserId); 991 } 992 993 private final BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() { 994 @Override 995 public void onReceive(Context context, Intent intent) { 996 if (DELAYED_KEYGUARD_ACTION.equals(intent.getAction())) { 997 final int sequence = intent.getIntExtra("seq", 0); 998 if (DEBUG) Log.d(TAG, "received DELAYED_KEYGUARD_ACTION with seq = " 999 + sequence + ", mDelayedShowingSequence = " + mDelayedShowingSequence); 1000 synchronized (KeyguardViewMediator.this) { 1001 if (mDelayedShowingSequence == sequence) { 1002 // Don't play lockscreen SFX if the screen went off due to timeout. 1003 mSuppressNextLockSound = true; 1004 doKeyguardLocked(null); 1005 } 1006 } 1007 } 1008 } 1009 }; 1010 1011 public void keyguardDone(boolean authenticated, boolean wakeup) { 1012 mKeyguardDonePending = false; 1013 synchronized (this) { 1014 EventLog.writeEvent(70000, 2); 1015 if (DEBUG) Log.d(TAG, "keyguardDone(" + authenticated + ")"); 1016 Message msg = mHandler.obtainMessage(KEYGUARD_DONE, authenticated ? 1 : 0, 1017 wakeup ? 1 : 0); 1018 mHandler.sendMessage(msg); 1019 } 1020 } 1021 1022 /** 1023 * This handler will be associated with the policy thread, which will also 1024 * be the UI thread of the keyguard. Since the apis of the policy, and therefore 1025 * this class, can be called by other threads, any action that directly 1026 * interacts with the keyguard ui should be posted to this handler, rather 1027 * than called directly. 1028 */ 1029 private Handler mHandler = new Handler(Looper.myLooper(), null, true /*async*/) { 1030 @Override 1031 public void handleMessage(Message msg) { 1032 switch (msg.what) { 1033 case SHOW: 1034 handleShow((Bundle) msg.obj); 1035 return ; 1036 case HIDE: 1037 handleHide(); 1038 return ; 1039 case RESET: 1040 handleReset((Bundle) msg.obj); 1041 return ; 1042 case VERIFY_UNLOCK: 1043 handleVerifyUnlock(); 1044 return; 1045 case NOTIFY_SCREEN_OFF: 1046 handleNotifyScreenOff(); 1047 return; 1048 case NOTIFY_SCREEN_ON: 1049 handleNotifyScreenOn((IKeyguardShowCallback) msg.obj); 1050 return; 1051 case KEYGUARD_DONE: 1052 handleKeyguardDone(msg.arg1 != 0, msg.arg2 != 0); 1053 return; 1054 case KEYGUARD_DONE_DRAWING: 1055 handleKeyguardDoneDrawing(); 1056 return; 1057 case KEYGUARD_DONE_AUTHENTICATING: 1058 keyguardDone(true, true); 1059 return; 1060 case SET_HIDDEN: 1061 handleSetHidden(msg.arg1 != 0); 1062 break; 1063 case KEYGUARD_TIMEOUT: 1064 synchronized (KeyguardViewMediator.this) { 1065 doKeyguardLocked((Bundle) msg.obj); 1066 } 1067 break; 1068 case SHOW_ASSISTANT: 1069 handleShowAssistant(); 1070 break; 1071 case DISPATCH_EVENT: 1072 handleDispatchEvent((MotionEvent) msg.obj); 1073 break; 1074 } 1075 } 1076 }; 1077 1078 /** 1079 * @see #keyguardDone 1080 * @see #KEYGUARD_DONE 1081 */ 1082 private void handleKeyguardDone(boolean authenticated, boolean wakeup) { 1083 if (DEBUG) Log.d(TAG, "handleKeyguardDone"); 1084 1085 if (authenticated) { 1086 mUpdateMonitor.clearFailedUnlockAttempts(); 1087 } 1088 1089 if (mExitSecureCallback != null) { 1090 try { 1091 mExitSecureCallback.onKeyguardExitResult(authenticated); 1092 } catch (RemoteException e) { 1093 Slog.w(TAG, "Failed to call onKeyguardExitResult(" + authenticated + ")", e); 1094 } 1095 1096 mExitSecureCallback = null; 1097 1098 if (authenticated) { 1099 // after succesfully exiting securely, no need to reshow 1100 // the keyguard when they've released the lock 1101 mExternallyEnabled = true; 1102 mNeedToReshowWhenReenabled = false; 1103 } 1104 } 1105 1106 handleHide(); 1107 sendUserPresentBroadcast(); 1108 } 1109 1110 protected void handleDispatchEvent(MotionEvent event) { 1111 mKeyguardViewManager.dispatch(event); 1112 } 1113 1114 private void sendUserPresentBroadcast() { 1115 final UserHandle currentUser = new UserHandle(mLockPatternUtils.getCurrentUser()); 1116 mContext.sendBroadcastAsUser(USER_PRESENT_INTENT, currentUser); 1117 } 1118 1119 /** 1120 * @see #keyguardDoneDrawing 1121 * @see #KEYGUARD_DONE_DRAWING 1122 */ 1123 private void handleKeyguardDoneDrawing() { 1124 synchronized(this) { 1125 if (DEBUG) Log.d(TAG, "handleKeyguardDoneDrawing"); 1126 if (mWaitingUntilKeyguardVisible) { 1127 if (DEBUG) Log.d(TAG, "handleKeyguardDoneDrawing: notifying mWaitingUntilKeyguardVisible"); 1128 mWaitingUntilKeyguardVisible = false; 1129 notifyAll(); 1130 1131 // there will usually be two of these sent, one as a timeout, and one 1132 // as a result of the callback, so remove any remaining messages from 1133 // the queue 1134 mHandler.removeMessages(KEYGUARD_DONE_DRAWING); 1135 } 1136 } 1137 } 1138 1139 private void playSounds(boolean locked) { 1140 // User feedback for keyguard. 1141 1142 if (mSuppressNextLockSound) { 1143 mSuppressNextLockSound = false; 1144 return; 1145 } 1146 1147 final ContentResolver cr = mContext.getContentResolver(); 1148 if (Settings.System.getInt(cr, Settings.System.LOCKSCREEN_SOUNDS_ENABLED, 1) == 1) { 1149 final int whichSound = locked 1150 ? mLockSoundId 1151 : mUnlockSoundId; 1152 mLockSounds.stop(mLockSoundStreamId); 1153 // Init mAudioManager 1154 if (mAudioManager == null) { 1155 mAudioManager = (AudioManager) mContext.getSystemService(Context.AUDIO_SERVICE); 1156 if (mAudioManager == null) return; 1157 mMasterStreamType = mAudioManager.getMasterStreamType(); 1158 } 1159 // If the stream is muted, don't play the sound 1160 if (mAudioManager.isStreamMute(mMasterStreamType)) return; 1161 1162 mLockSoundStreamId = mLockSounds.play(whichSound, 1163 mLockSoundVolume, mLockSoundVolume, 1/*priortiy*/, 0/*loop*/, 1.0f/*rate*/); 1164 } 1165 } 1166 1167 private void updateActivityLockScreenState() { 1168 try { 1169 ActivityManagerNative.getDefault().setLockScreenShown( 1170 mShowing && !mHidden); 1171 } catch (RemoteException e) { 1172 } 1173 } 1174 1175 /** 1176 * Handle message sent by {@link #showLocked}. 1177 * @see #SHOW 1178 */ 1179 private void handleShow(Bundle options) { 1180 synchronized (KeyguardViewMediator.this) { 1181 if (!mSystemReady) { 1182 if (DEBUG) Log.d(TAG, "ignoring handleShow because system is not ready."); 1183 return; 1184 } else { 1185 if (DEBUG) Log.d(TAG, "handleShow"); 1186 } 1187 1188 mKeyguardViewManager.show(options); 1189 mShowing = true; 1190 mKeyguardDonePending = false; 1191 updateActivityLockScreenState(); 1192 adjustStatusBarLocked(); 1193 userActivity(); 1194 try { 1195 ActivityManagerNative.getDefault().closeSystemDialogs("lock"); 1196 } catch (RemoteException e) { 1197 } 1198 1199 // Do this at the end to not slow down display of the keyguard. 1200 playSounds(true); 1201 1202 mShowKeyguardWakeLock.release(); 1203 } 1204 } 1205 1206 /** 1207 * Handle message sent by {@link #hideLocked()} 1208 * @see #HIDE 1209 */ 1210 private void handleHide() { 1211 synchronized (KeyguardViewMediator.this) { 1212 if (DEBUG) Log.d(TAG, "handleHide"); 1213 1214 // only play "unlock" noises if not on a call (since the incall UI 1215 // disables the keyguard) 1216 if (TelephonyManager.EXTRA_STATE_IDLE.equals(mPhoneState)) { 1217 playSounds(false); 1218 } 1219 1220 mKeyguardViewManager.hide(); 1221 mShowing = false; 1222 mKeyguardDonePending = false; 1223 updateActivityLockScreenState(); 1224 adjustStatusBarLocked(); 1225 } 1226 } 1227 1228 private void adjustStatusBarLocked() { 1229 if (mStatusBarManager == null) { 1230 mStatusBarManager = (StatusBarManager) 1231 mContext.getSystemService(Context.STATUS_BAR_SERVICE); 1232 } 1233 if (mStatusBarManager == null) { 1234 Log.w(TAG, "Could not get status bar manager"); 1235 } else { 1236 // Disable aspects of the system/status/navigation bars that must not be re-enabled by 1237 // windows that appear on top, ever 1238 int flags = StatusBarManager.DISABLE_NONE; 1239 if (mShowing) { 1240 // Permanently disable components not available when keyguard is enabled 1241 // (like recents). Temporary enable/disable (e.g. the "back" button) are 1242 // done in KeyguardHostView. 1243 flags |= StatusBarManager.DISABLE_RECENT; 1244 if (isSecure() || !ENABLE_INSECURE_STATUS_BAR_EXPAND) { 1245 // showing secure lockscreen; disable expanding. 1246 flags |= StatusBarManager.DISABLE_EXPAND; 1247 } 1248 if (isSecure()) { 1249 // showing secure lockscreen; disable ticker. 1250 flags |= StatusBarManager.DISABLE_NOTIFICATION_TICKER; 1251 } 1252 if (!isAssistantAvailable()) { 1253 flags |= StatusBarManager.DISABLE_SEARCH; 1254 } 1255 } 1256 1257 if (DEBUG) { 1258 Log.d(TAG, "adjustStatusBarLocked: mShowing=" + mShowing + " mHidden=" + mHidden 1259 + " isSecure=" + isSecure() + " --> flags=0x" + Integer.toHexString(flags)); 1260 } 1261 1262 if (!(mContext instanceof Activity)) { 1263 mStatusBarManager.disable(flags); 1264 } 1265 } 1266 } 1267 1268 /** 1269 * Handle message sent by {@link #resetStateLocked(Bundle)} 1270 * @see #RESET 1271 */ 1272 private void handleReset(Bundle options) { 1273 if (options == null) { 1274 options = new Bundle(); 1275 } 1276 options.putBoolean(KeyguardViewManager.IS_SWITCHING_USER, mSwitchingUser); 1277 synchronized (KeyguardViewMediator.this) { 1278 if (DEBUG) Log.d(TAG, "handleReset"); 1279 mKeyguardViewManager.reset(options); 1280 } 1281 } 1282 1283 /** 1284 * Handle message sent by {@link #verifyUnlock} 1285 * @see #VERIFY_UNLOCK 1286 */ 1287 private void handleVerifyUnlock() { 1288 synchronized (KeyguardViewMediator.this) { 1289 if (DEBUG) Log.d(TAG, "handleVerifyUnlock"); 1290 mKeyguardViewManager.verifyUnlock(); 1291 mShowing = true; 1292 updateActivityLockScreenState(); 1293 } 1294 } 1295 1296 /** 1297 * Handle message sent by {@link #notifyScreenOffLocked()} 1298 * @see #NOTIFY_SCREEN_OFF 1299 */ 1300 private void handleNotifyScreenOff() { 1301 synchronized (KeyguardViewMediator.this) { 1302 if (DEBUG) Log.d(TAG, "handleNotifyScreenOff"); 1303 mKeyguardViewManager.onScreenTurnedOff(); 1304 } 1305 } 1306 1307 /** 1308 * Handle message sent by {@link #notifyScreenOnLocked()} 1309 * @see #NOTIFY_SCREEN_ON 1310 */ 1311 private void handleNotifyScreenOn(IKeyguardShowCallback callback) { 1312 synchronized (KeyguardViewMediator.this) { 1313 if (DEBUG) Log.d(TAG, "handleNotifyScreenOn"); 1314 mKeyguardViewManager.onScreenTurnedOn(callback); 1315 } 1316 } 1317 1318 public boolean isDismissable() { 1319 return mKeyguardDonePending || !isSecure(); 1320 } 1321 1322 public void showAssistant() { 1323 Message msg = mHandler.obtainMessage(SHOW_ASSISTANT); 1324 mHandler.sendMessage(msg); 1325 } 1326 1327 public void handleShowAssistant() { 1328 mKeyguardViewManager.showAssistant(); 1329 } 1330 1331 private boolean isAssistantAvailable() { 1332 return mSearchManager != null 1333 && mSearchManager.getAssistIntent(mContext, false, UserHandle.USER_CURRENT) != null; 1334 } 1335 1336 public static MultiUserAvatarCache getAvatarCache() { 1337 return sMultiUserAvatarCache; 1338 } 1339 1340 public void dispatch(MotionEvent event) { 1341 Message msg = mHandler.obtainMessage(DISPATCH_EVENT, event); 1342 mHandler.sendMessage(msg); 1343 } 1344} 1345