packages/SystemUI/src/com/android/systemui/statusbar/phone/KeyguardBottomAreaView.java

   1 /*
   2  * Copyright (C) 2014 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.statusbar.phone;
  18
  19 import static android.view.accessibility.AccessibilityNodeInfo.ACTION_CLICK;
  20 import static android.view.accessibility.AccessibilityNodeInfo.AccessibilityAction;
  21
  22 import android.app.ActivityManager;
  23 import android.app.ActivityManagerNative;
  24 import android.app.ActivityOptions;
  25 import android.app.admin.DevicePolicyManager;
  26 import android.content.BroadcastReceiver;
  27 import android.content.ComponentName;
  28 import android.content.Context;
  29 import android.content.Intent;
  30 import android.content.IntentFilter;
  31 import android.content.ServiceConnection;
  32 import android.content.pm.ActivityInfo;
  33 import android.content.pm.PackageManager;
  34 import android.content.pm.ResolveInfo;
  35 import android.content.res.Configuration;
  36 import android.os.AsyncTask;
  37 import android.os.Bundle;
  38 import android.os.IBinder;
  39 import android.os.Message;
  40 import android.os.Messenger;
  41 import android.os.RemoteException;
  42 import android.os.UserHandle;
  43 import android.provider.MediaStore;
  44 import android.service.media.CameraPrewarmService;
  45 import android.telecom.TelecomManager;
  46 import android.util.AttributeSet;
  47 import android.util.Log;
  48 import android.util.TypedValue;
  49 import android.view.View;
  50 import android.view.ViewGroup;
  51 import android.view.WindowManager;
  52 import android.view.accessibility.AccessibilityNodeInfo;
  53 import android.widget.FrameLayout;
  54 import android.widget.TextView;
  55
  56 import com.android.internal.widget.LockPatternUtils;
  57 import com.android.keyguard.KeyguardUpdateMonitor;
  58 import com.android.keyguard.KeyguardUpdateMonitorCallback;
  59 import com.android.systemui.EventLogConstants;
  60 import com.android.systemui.EventLogTags;
  61 import com.android.systemui.Interpolators;
  62 import com.android.systemui.R;
  63 import com.android.systemui.assist.AssistManager;
  64 import com.android.systemui.statusbar.CommandQueue;
  65 import com.android.systemui.statusbar.KeyguardAffordanceView;
  66 import com.android.systemui.statusbar.KeyguardIndicationController;
  67 import com.android.systemui.statusbar.policy.AccessibilityController;
  68 import com.android.systemui.statusbar.policy.FlashlightController;
  69 import com.android.systemui.statusbar.policy.PreviewInflater;
  70
  71 /**
  72  * Implementation for the bottom area of the Keyguard, including camera/phone affordance and status
  73  * text.
  74  */
  75 public class KeyguardBottomAreaView extends FrameLayout implements View.OnClickListener,
  76         UnlockMethodCache.OnUnlockMethodChangedListener,
  77         AccessibilityController.AccessibilityStateChangedCallback, View.OnLongClickListener {
  78
  79     final static String TAG = "PhoneStatusBar/KeyguardBottomAreaView";
  80
  81     public static final String CAMERA_LAUNCH_SOURCE_AFFORDANCE = "lockscreen_affordance";
  82     public static final String CAMERA_LAUNCH_SOURCE_WIGGLE = "wiggle_gesture";
  83     public static final String CAMERA_LAUNCH_SOURCE_POWER_DOUBLE_TAP = "power_double_tap";
  84
  85     public static final String EXTRA_CAMERA_LAUNCH_SOURCE
  86             = "com.android.systemui.camera_launch_source";
  87
  88     private static final Intent SECURE_CAMERA_INTENT =
  89             new Intent(MediaStore.INTENT_ACTION_STILL_IMAGE_CAMERA_SECURE)
  90                     .addFlags(Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS);
  91     public static final Intent INSECURE_CAMERA_INTENT =
  92             new Intent(MediaStore.INTENT_ACTION_STILL_IMAGE_CAMERA);
  93     private static final Intent PHONE_INTENT = new Intent(Intent.ACTION_DIAL);
  94     private static final int DOZE_ANIMATION_STAGGER_DELAY = 48;
  95     private static final int DOZE_ANIMATION_ELEMENT_DURATION = 250;
  96
  97     private KeyguardAffordanceView mCameraImageView;
  98     private KeyguardAffordanceView mLeftAffordanceView;
  99     private LockIcon mLockIcon;
 100     private TextView mIndicationText;
 101     private ViewGroup mPreviewContainer;
 102
 103     private View mLeftPreview;
 104     private View mCameraPreview;
 105
 106     private ActivityStarter mActivityStarter;
 107     private UnlockMethodCache mUnlockMethodCache;
 108     private LockPatternUtils mLockPatternUtils;
 109     private FlashlightController mFlashlightController;
 110     private PreviewInflater mPreviewInflater;
 111     private KeyguardIndicationController mIndicationController;
 112     private AccessibilityController mAccessibilityController;
 113     private PhoneStatusBar mPhoneStatusBar;
 114     private KeyguardAffordanceHelper mAffordanceHelper;
 115
 116     private boolean mUserSetupComplete;
 117     private boolean mPrewarmBound;
 118     private Messenger mPrewarmMessenger;
 119     private final ServiceConnection mPrewarmConnection = new ServiceConnection() {
 120
 121         @Override
 122         public void onServiceConnected(ComponentName name, IBinder service) {
 123             mPrewarmMessenger = new Messenger(service);
 124         }
 125
 126         @Override
 127         public void onServiceDisconnected(ComponentName name) {
 128             mPrewarmMessenger = null;
 129         }
 130     };
 131
 132     private boolean mLeftIsVoiceAssist;
 133     private AssistManager mAssistManager;
 134
 135     public KeyguardBottomAreaView(Context context) {
 136         this(context, null);
 137     }
 138
 139     public KeyguardBottomAreaView(Context context, AttributeSet attrs) {
 140         this(context, attrs, 0);
 141     }
 142
 143     public KeyguardBottomAreaView(Context context, AttributeSet attrs, int defStyleAttr) {
 144         this(context, attrs, defStyleAttr, 0);
 145     }
 146
 147     public KeyguardBottomAreaView(Context context, AttributeSet attrs, int defStyleAttr,
 148             int defStyleRes) {
 149         super(context, attrs, defStyleAttr, defStyleRes);
 150     }
 151
 152     private AccessibilityDelegate mAccessibilityDelegate = new AccessibilityDelegate() {
 153         @Override
 154         public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfo info) {
 155             super.onInitializeAccessibilityNodeInfo(host, info);
 156             String label = null;
 157             if (host == mLockIcon) {
 158                 label = getResources().getString(R.string.unlock_label);
 159             } else if (host == mCameraImageView) {
 160                 label = getResources().getString(R.string.camera_label);
 161             } else if (host == mLeftAffordanceView) {
 162                 if (mLeftIsVoiceAssist) {
 163                     label = getResources().getString(R.string.voice_assist_label);
 164                 } else {
 165                     label = getResources().getString(R.string.phone_label);
 166                 }
 167             }
 168             info.addAction(new AccessibilityAction(ACTION_CLICK, label));
 169         }
 170
 171         @Override
 172         public boolean performAccessibilityAction(View host, int action, Bundle args) {
 173             if (action == ACTION_CLICK) {
 174                 if (host == mLockIcon) {
 175                     mPhoneStatusBar.animateCollapsePanels(
 176                             CommandQueue.FLAG_EXCLUDE_RECENTS_PANEL, true /* force */);
 177                     return true;
 178                 } else if (host == mCameraImageView) {
 179                     launchCamera(CAMERA_LAUNCH_SOURCE_AFFORDANCE);
 180                     return true;
 181                 } else if (host == mLeftAffordanceView) {
 182                     launchLeftAffordance();
 183                     return true;
 184                 }
 185             }
 186             return super.performAccessibilityAction(host, action, args);
 187         }
 188     };
 189
 190     @Override
 191     protected void onFinishInflate() {
 192         super.onFinishInflate();
 193         mLockPatternUtils = new LockPatternUtils(mContext);
 194         mPreviewContainer = (ViewGroup) findViewById(R.id.preview_container);
 195         mCameraImageView = (KeyguardAffordanceView) findViewById(R.id.camera_button);
 196         mLeftAffordanceView = (KeyguardAffordanceView) findViewById(R.id.left_button);
 197         mLockIcon = (LockIcon) findViewById(R.id.lock_icon);
 198         mIndicationText = (TextView) findViewById(R.id.keyguard_indication_text);
 199         watchForCameraPolicyChanges();
 200         updateCameraVisibility();
 201         mUnlockMethodCache = UnlockMethodCache.getInstance(getContext());
 202         mUnlockMethodCache.addListener(this);
 203         mLockIcon.update();
 204         setClipChildren(false);
 205         setClipToPadding(false);
 206         mPreviewInflater = new PreviewInflater(mContext, new LockPatternUtils(mContext));
 207         inflateCameraPreview();
 208         mLockIcon.setOnClickListener(this);
 209         mLockIcon.setOnLongClickListener(this);
 210         mCameraImageView.setOnClickListener(this);
 211         mLeftAffordanceView.setOnClickListener(this);
 212         initAccessibility();
 213     }
 214
 215     private void initAccessibility() {
 216         mLockIcon.setAccessibilityDelegate(mAccessibilityDelegate);
 217         mLeftAffordanceView.setAccessibilityDelegate(mAccessibilityDelegate);
 218         mCameraImageView.setAccessibilityDelegate(mAccessibilityDelegate);
 219     }
 220
 221     @Override
 222     protected void onConfigurationChanged(Configuration newConfig) {
 223         super.onConfigurationChanged(newConfig);
 224         int indicationBottomMargin = getResources().getDimensionPixelSize(
 225                 R.dimen.keyguard_indication_margin_bottom);
 226         MarginLayoutParams mlp = (MarginLayoutParams) mIndicationText.getLayoutParams();
 227         if (mlp.bottomMargin != indicationBottomMargin) {
 228             mlp.bottomMargin = indicationBottomMargin;
 229             mIndicationText.setLayoutParams(mlp);
 230         }
 231
 232         // Respect font size setting.
 233         mIndicationText.setTextSize(TypedValue.COMPLEX_UNIT_PX,
 234                 getResources().getDimensionPixelSize(
 235                         com.android.internal.R.dimen.text_size_small_material));
 236
 237         ViewGroup.LayoutParams lp = mCameraImageView.getLayoutParams();
 238         lp.width = getResources().getDimensionPixelSize(R.dimen.keyguard_affordance_width);
 239         lp.height = getResources().getDimensionPixelSize(R.dimen.keyguard_affordance_height);
 240         mCameraImageView.setLayoutParams(lp);
 241         mCameraImageView.setImageDrawable(mContext.getDrawable(R.drawable.ic_camera_alt_24dp));
 242
 243         lp = mLockIcon.getLayoutParams();
 244         lp.width = getResources().getDimensionPixelSize(R.dimen.keyguard_affordance_width);
 245         lp.height = getResources().getDimensionPixelSize(R.dimen.keyguard_affordance_height);
 246         mLockIcon.setLayoutParams(lp);
 247         mLockIcon.update(true /* force */);
 248
 249         lp = mLeftAffordanceView.getLayoutParams();
 250         lp.width = getResources().getDimensionPixelSize(R.dimen.keyguard_affordance_width);
 251         lp.height = getResources().getDimensionPixelSize(R.dimen.keyguard_affordance_height);
 252         mLeftAffordanceView.setLayoutParams(lp);
 253         updateLeftAffordanceIcon();
 254     }
 255
 256     public void setActivityStarter(ActivityStarter activityStarter) {
 257         mActivityStarter = activityStarter;
 258     }
 259
 260     public void setFlashlightController(FlashlightController flashlightController) {
 261         mFlashlightController = flashlightController;
 262     }
 263
 264     public void setAccessibilityController(AccessibilityController accessibilityController) {
 265         mAccessibilityController = accessibilityController;
 266         mLockIcon.setAccessibilityController(accessibilityController);
 267         accessibilityController.addStateChangedCallback(this);
 268     }
 269
 270     public void setPhoneStatusBar(PhoneStatusBar phoneStatusBar) {
 271         mPhoneStatusBar = phoneStatusBar;
 272         updateCameraVisibility(); // in case onFinishInflate() was called too early
 273     }
 274
 275     public void setAffordanceHelper(KeyguardAffordanceHelper affordanceHelper) {
 276         mAffordanceHelper = affordanceHelper;
 277     }
 278
 279     public void setUserSetupComplete(boolean userSetupComplete) {
 280         mUserSetupComplete = userSetupComplete;
 281         updateCameraVisibility();
 282         updateLeftAffordanceIcon();
 283     }
 284
 285     private Intent getCameraIntent() {
 286         KeyguardUpdateMonitor updateMonitor = KeyguardUpdateMonitor.getInstance(mContext);
 287         boolean canSkipBouncer = updateMonitor.getUserCanSkipBouncer(
 288                 KeyguardUpdateMonitor.getCurrentUser());
 289         boolean secure = mLockPatternUtils.isSecure(KeyguardUpdateMonitor.getCurrentUser());
 290         return (secure && !canSkipBouncer) ? SECURE_CAMERA_INTENT : INSECURE_CAMERA_INTENT;
 291     }
 292
 293     /**
 294      * Resolves the intent to launch the camera application.
 295      */
 296     public ResolveInfo resolveCameraIntent() {
 297         return mContext.getPackageManager().resolveActivityAsUser(getCameraIntent(),
 298                 PackageManager.MATCH_DEFAULT_ONLY,
 299                 KeyguardUpdateMonitor.getCurrentUser());
 300     }
 301
 302     private void updateCameraVisibility() {
 303         if (mCameraImageView == null) {
 304             // Things are not set up yet; reply hazy, ask again later
 305             return;
 306         }
 307         ResolveInfo resolved = resolveCameraIntent();
 308         boolean isCameraDisabled =
 309                 (mPhoneStatusBar != null) && !mPhoneStatusBar.isCameraAllowedByAdmin();
 310         boolean visible = !isCameraDisabled
 311                 && resolved != null
 312                 && getResources().getBoolean(R.bool.config_keyguardShowCameraAffordance)
 313                 && mUserSetupComplete;
 314         mCameraImageView.setVisibility(visible ? View.VISIBLE : View.GONE);
 315     }
 316
 317     private void updateLeftAffordanceIcon() {
 318         mLeftIsVoiceAssist = canLaunchVoiceAssist();
 319         int drawableId;
 320         int contentDescription;
 321         boolean visible = mUserSetupComplete;
 322         if (mLeftIsVoiceAssist) {
 323             drawableId = R.drawable.ic_mic_26dp;
 324             contentDescription = R.string.accessibility_voice_assist_button;
 325         } else {
 326             visible &= isPhoneVisible();
 327             drawableId = R.drawable.ic_phone_24dp;
 328             contentDescription = R.string.accessibility_phone_button;
 329         }
 330         mLeftAffordanceView.setVisibility(visible ? View.VISIBLE : View.GONE);
 331         mLeftAffordanceView.setImageDrawable(mContext.getDrawable(drawableId));
 332         mLeftAffordanceView.setContentDescription(mContext.getString(contentDescription));
 333     }
 334
 335     public boolean isLeftVoiceAssist() {
 336         return mLeftIsVoiceAssist;
 337     }
 338
 339     private boolean isPhoneVisible() {
 340         PackageManager pm = mContext.getPackageManager();
 341         return pm.hasSystemFeature(PackageManager.FEATURE_TELEPHONY)
 342                 && pm.resolveActivity(PHONE_INTENT, 0) != null;
 343     }
 344
 345     private void watchForCameraPolicyChanges() {
 346         final IntentFilter filter = new IntentFilter();
 347         filter.addAction(DevicePolicyManager.ACTION_DEVICE_POLICY_MANAGER_STATE_CHANGED);
 348         getContext().registerReceiverAsUser(mDevicePolicyReceiver,
 349                 UserHandle.ALL, filter, null, null);
 350         KeyguardUpdateMonitor.getInstance(mContext).registerCallback(mUpdateMonitorCallback);
 351     }
 352
 353     @Override
 354     public void onStateChanged(boolean accessibilityEnabled, boolean touchExplorationEnabled) {
 355         mCameraImageView.setClickable(touchExplorationEnabled);
 356         mLeftAffordanceView.setClickable(touchExplorationEnabled);
 357         mCameraImageView.setFocusable(accessibilityEnabled);
 358         mLeftAffordanceView.setFocusable(accessibilityEnabled);
 359         mLockIcon.update();
 360     }
 361
 362     @Override
 363     public void onClick(View v) {
 364         if (v == mCameraImageView) {
 365             launchCamera(CAMERA_LAUNCH_SOURCE_AFFORDANCE);
 366         } else if (v == mLeftAffordanceView) {
 367             launchLeftAffordance();
 368         } if (v == mLockIcon) {
 369             if (!mAccessibilityController.isAccessibilityEnabled()) {
 370                 handleTrustCircleClick();
 371             } else {
 372                 mPhoneStatusBar.animateCollapsePanels(
 373                         CommandQueue.FLAG_EXCLUDE_NONE, true /* force */);
 374             }
 375         }
 376     }
 377
 378     @Override
 379     public boolean onLongClick(View v) {
 380         handleTrustCircleClick();
 381         return true;
 382     }
 383
 384     private void handleTrustCircleClick() {
 385         EventLogTags.writeSysuiLockscreenGesture(
 386                 EventLogConstants.SYSUI_LOCKSCREEN_GESTURE_TAP_LOCK, 0 /* lengthDp - N/A */,
 387                 0 /* velocityDp - N/A */);
 388         mIndicationController.showTransientIndication(
 389                 R.string.keyguard_indication_trust_disabled);
 390         mLockPatternUtils.requireCredentialEntry(KeyguardUpdateMonitor.getCurrentUser());
 391     }
 392
 393     public void bindCameraPrewarmService() {
 394         Intent intent = getCameraIntent();
 395         ActivityInfo targetInfo = PreviewInflater.getTargetActivityInfo(mContext, intent,
 396                 KeyguardUpdateMonitor.getCurrentUser(), true /* onlyDirectBootAware */);
 397         if (targetInfo != null && targetInfo.metaData != null) {
 398             String clazz = targetInfo.metaData.getString(
 399                     MediaStore.META_DATA_STILL_IMAGE_CAMERA_PREWARM_SERVICE);
 400             if (clazz != null) {
 401                 Intent serviceIntent = new Intent();
 402                 serviceIntent.setClassName(targetInfo.packageName, clazz);
 403                 serviceIntent.setAction(CameraPrewarmService.ACTION_PREWARM);
 404                 try {
 405                     if (getContext().bindServiceAsUser(serviceIntent, mPrewarmConnection,
 406                             Context.BIND_AUTO_CREATE | Context.BIND_FOREGROUND_SERVICE,
 407                             new UserHandle(UserHandle.USER_CURRENT))) {
 408                         mPrewarmBound = true;
 409                     }
 410                 } catch (SecurityException e) {
 411                     Log.w(TAG, "Unable to bind to prewarm service package=" + targetInfo.packageName
 412                             + " class=" + clazz, e);
 413                 }
 414             }
 415         }
 416     }
 417
 418     public void unbindCameraPrewarmService(boolean launched) {
 419         if (mPrewarmBound) {
 420             if (mPrewarmMessenger != null && launched) {
 421                 try {
 422                     mPrewarmMessenger.send(Message.obtain(null /* handler */,
 423                             CameraPrewarmService.MSG_CAMERA_FIRED));
 424                 } catch (RemoteException e) {
 425                     Log.w(TAG, "Error sending camera fired message", e);
 426                 }
 427             }
 428             mContext.unbindService(mPrewarmConnection);
 429             mPrewarmBound = false;
 430         }
 431     }
 432
 433     public void launchCamera(String source) {
 434         final Intent intent = getCameraIntent();
 435         intent.putExtra(EXTRA_CAMERA_LAUNCH_SOURCE, source);
 436         boolean wouldLaunchResolverActivity = PreviewInflater.wouldLaunchResolverActivity(
 437                 mContext, intent, KeyguardUpdateMonitor.getCurrentUser());
 438         if (intent == SECURE_CAMERA_INTENT && !wouldLaunchResolverActivity) {
 439             AsyncTask.execute(new Runnable() {
 440                 @Override
 441                 public void run() {
 442                     int result = ActivityManager.START_CANCELED;
 443
 444                     // Normally an activity will set it's requested rotation
 445                     // animation on its window. However when launching an activity
 446                     // causes the orientation to change this is too late. In these cases
 447                     // the default animation is used. This doesn't look good for
 448                     // the camera (as it rotates the camera contents out of sync
 449                     // with physical reality). So, we ask the WindowManager to
 450                     // force the crossfade animation if an orientation change
 451                     // happens to occur during the launch.
 452                     ActivityOptions o = ActivityOptions.makeBasic();
 453                     o.setRotationAnimationHint(
 454                             WindowManager.LayoutParams.ROTATION_ANIMATION_SEAMLESS);
 455                     try {
 456                         result = ActivityManagerNative.getDefault().startActivityAsUser(
 457                                 null, getContext().getBasePackageName(),
 458                                 intent,
 459                                 intent.resolveTypeIfNeeded(getContext().getContentResolver()),
 460                                 null, null, 0, Intent.FLAG_ACTIVITY_NEW_TASK, null, o.toBundle(),
 461                                 UserHandle.CURRENT.getIdentifier());
 462                     } catch (RemoteException e) {
 463                         Log.w(TAG, "Unable to start camera activity", e);
 464                     }
 465                     mActivityStarter.preventNextAnimation();
 466                     final boolean launched = isSuccessfulLaunch(result);
 467                     post(new Runnable() {
 468                         @Override
 469                         public void run() {
 470                             unbindCameraPrewarmService(launched);
 471                         }
 472                     });
 473                 }
 474             });
 475         } else {
 476
 477             // We need to delay starting the activity because ResolverActivity finishes itself if
 478             // launched behind lockscreen.
 479             mActivityStarter.startActivity(intent, false /* dismissShade */,
 480                     new ActivityStarter.Callback() {
 481                         @Override
 482                         public void onActivityStarted(int resultCode) {
 483                             unbindCameraPrewarmService(isSuccessfulLaunch(resultCode));
 484                         }
 485                     });
 486         }
 487     }
 488
 489     private static boolean isSuccessfulLaunch(int result) {
 490         return result == ActivityManager.START_SUCCESS
 491                 || result == ActivityManager.START_DELIVERED_TO_TOP
 492                 || result == ActivityManager.START_TASK_TO_FRONT;
 493     }
 494
 495     public void launchLeftAffordance() {
 496         if (mLeftIsVoiceAssist) {
 497             launchVoiceAssist();
 498         } else {
 499             launchPhone();
 500         }
 501     }
 502
 503     private void launchVoiceAssist() {
 504         Runnable runnable = new Runnable() {
 505             @Override
 506             public void run() {
 507                 mAssistManager.launchVoiceAssistFromKeyguard();
 508                 mActivityStarter.preventNextAnimation();
 509             }
 510         };
 511         if (mPhoneStatusBar.isKeyguardCurrentlySecure()) {
 512             AsyncTask.execute(runnable);
 513         } else {
 514             mPhoneStatusBar.executeRunnableDismissingKeyguard(runnable, null /* cancelAction */,
 515                     false /* dismissShade */, false /* afterKeyguardGone */, true /* deferred */);
 516         }
 517     }
 518
 519     private boolean canLaunchVoiceAssist() {
 520         return mAssistManager.canVoiceAssistBeLaunchedFromKeyguard();
 521     }
 522
 523     private void launchPhone() {
 524         final TelecomManager tm = TelecomManager.from(mContext);
 525         if (tm.isInCall()) {
 526             AsyncTask.execute(new Runnable() {
 527                 @Override
 528                 public void run() {
 529                     tm.showInCallScreen(false /* showDialpad */);
 530                 }
 531             });
 532         } else {
 533             mActivityStarter.startActivity(PHONE_INTENT, false /* dismissShade */);
 534         }
 535     }
 536
 537
 538     @Override
 539     protected void onVisibilityChanged(View changedView, int visibility) {
 540         super.onVisibilityChanged(changedView, visibility);
 541         if (changedView == this && visibility == VISIBLE) {
 542             mLockIcon.update();
 543             updateCameraVisibility();
 544         }
 545     }
 546
 547     public KeyguardAffordanceView getLeftView() {
 548         return mLeftAffordanceView;
 549     }
 550
 551     public KeyguardAffordanceView getRightView() {
 552         return mCameraImageView;
 553     }
 554
 555     public View getLeftPreview() {
 556         return mLeftPreview;
 557     }
 558
 559     public View getRightPreview() {
 560         return mCameraPreview;
 561     }
 562
 563     public LockIcon getLockIcon() {
 564         return mLockIcon;
 565     }
 566
 567     public View getIndicationView() {
 568         return mIndicationText;
 569     }
 570
 571     @Override
 572     public boolean hasOverlappingRendering() {
 573         return false;
 574     }
 575
 576     @Override
 577     public void onUnlockMethodStateChanged() {
 578         mLockIcon.update();
 579         updateCameraVisibility();
 580     }
 581
 582     private void inflateCameraPreview() {
 583         View previewBefore = mCameraPreview;
 584         boolean visibleBefore = false;
 585         if (previewBefore != null) {
 586             mPreviewContainer.removeView(previewBefore);
 587             visibleBefore = previewBefore.getVisibility() == View.VISIBLE;
 588         }
 589         mCameraPreview = mPreviewInflater.inflatePreview(getCameraIntent());
 590         if (mCameraPreview != null) {
 591             mPreviewContainer.addView(mCameraPreview);
 592             mCameraPreview.setVisibility(visibleBefore ? View.VISIBLE : View.INVISIBLE);
 593         }
 594         if (mAffordanceHelper != null) {
 595             mAffordanceHelper.updatePreviews();
 596         }
 597     }
 598
 599     private void updateLeftPreview() {
 600         View previewBefore = mLeftPreview;
 601         if (previewBefore != null) {
 602             mPreviewContainer.removeView(previewBefore);
 603         }
 604         if (mLeftIsVoiceAssist) {
 605             mLeftPreview = mPreviewInflater.inflatePreviewFromService(
 606                     mAssistManager.getVoiceInteractorComponentName());
 607         } else {
 608             mLeftPreview = mPreviewInflater.inflatePreview(PHONE_INTENT);
 609         }
 610         if (mLeftPreview != null) {
 611             mPreviewContainer.addView(mLeftPreview);
 612             mLeftPreview.setVisibility(View.INVISIBLE);
 613         }
 614         if (mAffordanceHelper != null) {
 615             mAffordanceHelper.updatePreviews();
 616         }
 617     }
 618
 619     public void startFinishDozeAnimation() {
 620         long delay = 0;
 621         if (mLeftAffordanceView.getVisibility() == View.VISIBLE) {
 622             startFinishDozeAnimationElement(mLeftAffordanceView, delay);
 623             delay += DOZE_ANIMATION_STAGGER_DELAY;
 624         }
 625         startFinishDozeAnimationElement(mLockIcon, delay);
 626         delay += DOZE_ANIMATION_STAGGER_DELAY;
 627         if (mCameraImageView.getVisibility() == View.VISIBLE) {
 628             startFinishDozeAnimationElement(mCameraImageView, delay);
 629         }
 630         mIndicationText.setAlpha(0f);
 631         mIndicationText.animate()
 632                 .alpha(1f)
 633                 .setInterpolator(Interpolators.LINEAR_OUT_SLOW_IN)
 634                 .setDuration(NotificationPanelView.DOZE_ANIMATION_DURATION);
 635     }
 636
 637     private void startFinishDozeAnimationElement(View element, long delay) {
 638         element.setAlpha(0f);
 639         element.setTranslationY(element.getHeight() / 2);
 640         element.animate()
 641                 .alpha(1f)
 642                 .translationY(0f)
 643                 .setInterpolator(Interpolators.LINEAR_OUT_SLOW_IN)
 644                 .setStartDelay(delay)
 645                 .setDuration(DOZE_ANIMATION_ELEMENT_DURATION);
 646     }
 647
 648     private final BroadcastReceiver mDevicePolicyReceiver = new BroadcastReceiver() {
 649         @Override
 650         public void onReceive(Context context, Intent intent) {
 651             post(new Runnable() {
 652                 @Override
 653                 public void run() {
 654                     updateCameraVisibility();
 655                 }
 656             });
 657         }
 658     };
 659
 660     private final KeyguardUpdateMonitorCallback mUpdateMonitorCallback =
 661             new KeyguardUpdateMonitorCallback() {
 662         @Override
 663         public void onUserSwitchComplete(int userId) {
 664             updateCameraVisibility();
 665         }
 666
 667         @Override
 668         public void onStartedWakingUp() {
 669             mLockIcon.setDeviceInteractive(true);
 670         }
 671
 672         @Override
 673         public void onFinishedGoingToSleep(int why) {
 674             mLockIcon.setDeviceInteractive(false);
 675         }
 676
 677         @Override
 678         public void onScreenTurnedOn() {
 679             mLockIcon.setScreenOn(true);
 680         }
 681
 682         @Override
 683         public void onScreenTurnedOff() {
 684             mLockIcon.setScreenOn(false);
 685         }
 686
 687         @Override
 688         public void onKeyguardVisibilityChanged(boolean showing) {
 689             mLockIcon.update();
 690         }
 691
 692         @Override
 693         public void onFingerprintRunningStateChanged(boolean running) {
 694             mLockIcon.update();
 695         }
 696
 697         @Override
 698         public void onStrongAuthStateChanged(int userId) {
 699             mLockIcon.update();
 700         }
 701
 702         @Override
 703         public void onUserUnlocked() {
 704             inflateCameraPreview();
 705             updateCameraVisibility();
 706             updateLeftAffordance();
 707         }
 708     };
 709
 710     public void setKeyguardIndicationController(
 711             KeyguardIndicationController keyguardIndicationController) {
 712         mIndicationController = keyguardIndicationController;
 713     }
 714
 715     public void setAssistManager(AssistManager assistManager) {
 716         mAssistManager = assistManager;
 717         updateLeftAffordance();
 718     }
 719
 720     public void updateLeftAffordance() {
 721         updateLeftAffordanceIcon();
 722         updateLeftPreview();
 723     }
 724
 725     public void onKeyguardShowingChanged() {
 726         updateLeftAffordance();
 727         inflateCameraPreview();
 728     }
 729 }