1// Copyright 2015-present 650 Industries. All rights reserved.
2
3@import UIKit;
4
5#import "EXAnalytics.h"
6#import "EXAbstractLoader.h"
7#import "EXAppViewController.h"
8#import "EXAppLoadingProgressWindowController.h"
9#import "EXAppLoadingCancelView.h"
10#import "EXManagedAppSplashScreenViewProvider.h"
11#import "EXManagedAppSplashScreenConfigurationBuilder.h"
12#import "EXManagedAppSplashScreenViewController.h"
13#import "EXHomeAppSplashScreenViewProvider.h"
14#import "EXEnvironment.h"
15#import "EXErrorRecoveryManager.h"
16#import "EXErrorView.h"
17#import "EXFileDownloader.h"
18#import "EXKernel.h"
19#import "EXKernelUtil.h"
20#import "EXReactAppManager.h"
21#import "EXVersions.h"
22#import "EXUpdatesManager.h"
23#import "EXUtil.h"
24
25#import <EXSplashScreen/EXSplashScreenService.h>
26#import <React/RCTUtils.h>
27#import <ExpoModulesCore/EXModuleRegistryProvider.h>
28
29#if __has_include(<EXScreenOrientation/EXScreenOrientationRegistry.h>)
30#import <EXScreenOrientation/EXScreenOrientationRegistry.h>
31#endif
32
33#import <React/RCTAppearance.h>
34#if defined(INCLUDES_VERSIONED_CODE) && __has_include(<ABI47_0_0React/ABI47_0_0RCTAppearance.h>)
35#import <ABI47_0_0React/ABI47_0_0RCTAppearance.h>
36#endif
37#if defined(INCLUDES_VERSIONED_CODE) && __has_include(<ABI46_0_0React/ABI46_0_0RCTAppearance.h>)
38#import <ABI46_0_0React/ABI46_0_0RCTAppearance.h>
39#endif
40
41#if defined(EX_DETACHED)
42#import "ExpoKit-Swift.h"
43#else
44#import "Expo_Go-Swift.h"
45#endif // defined(EX_DETACHED)
46
47
48#define EX_INTERFACE_ORIENTATION_USE_MANIFEST 0
49
50// when we encounter an error and auto-refresh, we may actually see a series of errors.
51// we only want to trigger refresh once, so we debounce refresh on a timer.
52const CGFloat kEXAutoReloadDebounceSeconds = 0.1;
53
54// in development only, some errors can happen before we even start loading
55// (e.g. certain packager errors, such as an invalid bundle url)
56// and we want to make sure not to cover the error with a loading view or other chrome.
57const CGFloat kEXDevelopmentErrorCoolDownSeconds = 0.1;
58
59// copy of RNScreens protocol
60@protocol EXKernelRNSScreenWindowTraits
61
62+ (BOOL)shouldAskScreensForScreenOrientationInViewController:(UIViewController *)vc;
63
64@end
65
66NS_ASSUME_NONNULL_BEGIN
67
68@interface EXAppViewController ()
69  <EXReactAppManagerUIDelegate, EXAppLoaderDelegate, EXErrorViewDelegate, EXAppLoadingCancelViewDelegate>
70
71@property (nonatomic, assign) BOOL isLoading;
72@property (atomic, assign) BOOL isBridgeAlreadyLoading;
73@property (nonatomic, weak) EXKernelAppRecord *appRecord;
74@property (nonatomic, strong) EXErrorView *errorView;
75@property (nonatomic, strong) NSTimer *tmrAutoReloadDebounce;
76@property (nonatomic, strong) NSDate *dtmLastFatalErrorShown;
77@property (nonatomic, strong) NSMutableArray<UIViewController *> *backgroundedControllers;
78
79@property (nonatomic, assign) BOOL isStandalone;
80@property (nonatomic, assign) BOOL isHomeApp;
81
82/*
83 * Controller for handling all messages from bundler/fetcher.
84 * It shows another UIWindow with text and percentage progress.
85 * Enabled only in managed workflow or home when in development mode.
86 * It should appear once manifest is fetched.
87 */
88@property (nonatomic, strong, nonnull) EXAppLoadingProgressWindowController *appLoadingProgressWindowController;
89
90/**
91 * SplashScreenViewProvider that is used only in managed workflow app.
92 * Managed app does not need any specific SplashScreenViewProvider as it uses generic one povided by the SplashScreen module.
93 * See also EXHomeAppSplashScreenViewProvider in self.viewDidLoad
94 */
95@property (nonatomic, strong, nullable) EXManagedAppSplashScreenViewProvider *managedAppSplashScreenViewProvider;
96@property (nonatomic, strong, nullable) EXManagedAppSplashScreenViewController *managedSplashScreenController;
97
98/*
99 * This view is available in managed apps run in Expo Go only.
100 * It is shown only before any managed app manifest is delivered by the app loader.
101 */
102@property (nonatomic, strong, nullable) EXAppLoadingCancelView *appLoadingCancelView;
103
104@end
105
106@implementation EXAppViewController
107
108#pragma mark - Lifecycle
109
110- (instancetype)initWithAppRecord:(EXKernelAppRecord *)record
111{
112  if (self = [super init]) {
113    _appRecord = record;
114    _isStandalone = [EXEnvironment sharedEnvironment].isDetached;
115  }
116  return self;
117}
118
119- (void)dealloc
120{
121  [self _invalidateRecoveryTimer];
122  [[NSNotificationCenter defaultCenter] removeObserver:self];
123}
124
125- (void)viewDidLoad
126{
127  [super viewDidLoad];
128
129  // EXKernel.appRegistry.homeAppRecord does not contain any homeAppRecord until this point,
130  // therefore we cannot move this property initialization to the constructor/initializer
131  _isHomeApp = _appRecord == [EXKernel sharedInstance].appRegistry.homeAppRecord;
132
133  // show LoadingCancelView in managed apps only
134  if (!self.isStandalone && !self.isHomeApp) {
135    self.appLoadingCancelView = [EXAppLoadingCancelView new];
136    // if home app is available then LoadingCancelView can show `go to home` button
137    if ([EXKernel sharedInstance].appRegistry.homeAppRecord) {
138      self.appLoadingCancelView.delegate = self;
139    }
140    [self.view addSubview:self.appLoadingCancelView];
141    [self.view bringSubviewToFront:self.appLoadingCancelView];
142  }
143
144  // show LoadingProgressWindow in the development client for all apps other than production home
145  BOOL isProductionHomeApp = self.isHomeApp && ![EXEnvironment sharedEnvironment].isDebugXCodeScheme;
146  self.appLoadingProgressWindowController = [[EXAppLoadingProgressWindowController alloc] initWithEnabled:!self.isStandalone && !isProductionHomeApp];
147
148  // show SplashScreen in standalone apps and home app only
149  // SplashScreen for managed is shown once the manifest is available
150  if (self.isHomeApp) {
151    EXHomeAppSplashScreenViewProvider *homeAppSplashScreenViewProvider = [EXHomeAppSplashScreenViewProvider new];
152    [self _showSplashScreenWithProvider:homeAppSplashScreenViewProvider];
153  } else if (self.isStandalone) {
154    [self _showSplashScreenWithProvider:[EXSplashScreenViewNativeProvider new]];
155  }
156
157  self.view.backgroundColor = [UIColor whiteColor];
158  _appRecord.appManager.delegate = self;
159  self.isLoading = YES;
160}
161
162- (void)viewDidAppear:(BOOL)animated
163{
164  [super viewDidAppear:animated];
165  if (_appRecord && _appRecord.status == kEXKernelAppRecordStatusNew) {
166    _appRecord.appLoader.delegate = self;
167    _appRecord.appLoader.dataSource = _appRecord.appManager;
168    [self refresh];
169  }
170}
171
172- (BOOL)shouldAutorotate
173{
174  return YES;
175}
176
177- (void)viewWillLayoutSubviews
178{
179  [super viewWillLayoutSubviews];
180  if (_appLoadingCancelView) {
181    _appLoadingCancelView.frame = CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height);
182  }
183  if (_contentView) {
184    _contentView.frame = CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height);
185  }
186}
187
188- (void)viewWillDisappear:(BOOL)animated
189{
190  [_appLoadingProgressWindowController hide];
191  [super viewWillDisappear:animated];
192}
193
194/**
195 * Force presented view controllers to use the same user interface style.
196 */
197- (void)presentViewController:(UIViewController *)viewControllerToPresent animated: (BOOL)flag completion:(void (^ __nullable)(void))completion
198{
199  [super presentViewController:viewControllerToPresent animated:flag completion:completion];
200  [self _overrideUserInterfaceStyleOf:viewControllerToPresent];
201}
202
203/**
204 * Force child view controllers to use the same user interface style.
205 */
206- (void)addChildViewController:(UIViewController *)childController
207{
208  [super addChildViewController:childController];
209  [self _overrideUserInterfaceStyleOf:childController];
210}
211
212#pragma mark - Public
213
214- (void)maybeShowError:(NSError *)error
215{
216  self.isLoading = NO;
217  if ([self _willAutoRecoverFromError:error]) {
218    return;
219  }
220  if (error && ![error isKindOfClass:[NSError class]]) {
221#if DEBUG
222    NSAssert(NO, @"AppViewController error handler was called on an object that isn't an NSError");
223#endif
224    return;
225  }
226
227  // we don't ever want to show any Expo UI in a production standalone app, so hard crash
228  if ([EXEnvironment sharedEnvironment].isDetached && ![_appRecord.appManager enablesDeveloperTools]) {
229    NSException *e = [NSException exceptionWithName:@"ExpoFatalError"
230                                             reason:[NSString stringWithFormat:@"Expo encountered a fatal error: %@", [error localizedDescription]]
231                                           userInfo:@{NSUnderlyingErrorKey: error}];
232    @throw e;
233  }
234
235  NSString *domain = (error && error.domain) ? error.domain : @"";
236  BOOL isNetworkError = ([domain isEqualToString:(NSString *)kCFErrorDomainCFNetwork] || [domain isEqualToString:NSURLErrorDomain] || [domain isEqualToString:EXNetworkErrorDomain]);
237
238  if (isNetworkError) {
239    // show a human-readable reachability error
240    dispatch_async(dispatch_get_main_queue(), ^{
241      [self _showErrorWithType:kEXFatalErrorTypeLoading error:error];
242    });
243  } else if ([domain isEqualToString:@"JSServer"] && [_appRecord.appManager enablesDeveloperTools]) {
244    // RCTRedBox already handled this
245  } else if ([domain rangeOfString:RCTErrorDomain].length > 0 && [_appRecord.appManager enablesDeveloperTools]) {
246    // RCTRedBox already handled this
247  } else {
248    dispatch_async(dispatch_get_main_queue(), ^{
249      [self _showErrorWithType:kEXFatalErrorTypeException error:error];
250    });
251  }
252}
253
254- (void)refresh
255{
256  self.isLoading = YES;
257  self.isBridgeAlreadyLoading = NO;
258  [self _invalidateRecoveryTimer];
259  [_appRecord.appLoader request];
260}
261
262- (void)reloadFromCache
263{
264  self.isLoading = YES;
265  self.isBridgeAlreadyLoading = NO;
266  [self _invalidateRecoveryTimer];
267  [_appRecord.appLoader requestFromCache];
268}
269
270- (bool)_readSupportsRTLFromManifest:(EXManifestsManifest *)manifest
271{
272  return [[[[manifest rawManifestJSON] valueForKey:@"extra"] valueForKey: @"supportsRTL"] boolValue];
273}
274
275- (void)appStateDidBecomeActive
276{
277  if (_isHomeApp) {
278    [EXTextDirectionController setSupportsRTL:false];
279  } else if(_appRecord.appLoader.manifest != nil) {
280    [EXTextDirectionController setSupportsRTL:[self _readSupportsRTLFromManifest:_appRecord.appLoader.manifest]];
281  }
282  dispatch_async(dispatch_get_main_queue(), ^{
283    // Reset the root view background color and window color if we switch between Expo home and project
284    [self _setBackgroundColor];
285  });
286}
287
288- (void)appStateDidBecomeInactive
289{
290}
291
292- (void)_rebuildBridge
293{
294  if (!self.isBridgeAlreadyLoading) {
295    self.isBridgeAlreadyLoading = YES;
296    dispatch_async(dispatch_get_main_queue(), ^{
297      [self _overrideUserInterfaceStyleOf:self];
298      [self _overrideAppearanceModuleBehaviour];
299      [self _invalidateRecoveryTimer];
300      [[EXKernel sharedInstance] logAnalyticsEvent:@"LOAD_EXPERIENCE" forAppRecord:self.appRecord];
301      [self.appRecord.appManager rebuildBridge];
302    });
303  }
304}
305
306- (void)foregroundControllers
307{
308  if (_backgroundedControllers != nil) {
309    __block UIViewController *parentController = self;
310
311    [_backgroundedControllers enumerateObjectsUsingBlock:^(UIViewController * _Nonnull viewController, NSUInteger idx, BOOL * _Nonnull stop) {
312      [parentController presentViewController:viewController animated:NO completion:nil];
313      parentController = viewController;
314    }];
315
316    _backgroundedControllers = nil;
317  }
318}
319
320- (void)backgroundControllers
321{
322  UIViewController *childController = [self presentedViewController];
323
324  if (childController != nil) {
325    if (_backgroundedControllers == nil) {
326      _backgroundedControllers = [NSMutableArray new];
327    }
328
329    while (childController != nil) {
330      [_backgroundedControllers addObject:childController];
331      childController = childController.presentedViewController;
332    }
333  }
334}
335
336/**
337 * In managed app we expect two kinds of manifest:
338 * - optimistic one (served from cache)
339 * - actual one served when app is fetched.
340 * For each of them we should show SplashScreen,
341 * therefore for any consecutive SplashScreen.show call we just reconfigure what's already visible.
342 * In HomeApp or standalone apps this function is no-op as SplashScreen is managed differently.
343 */
344- (void)_showOrReconfigureManagedAppSplashScreen:(EXManifestsManifest *)manifest
345{
346  if (_isStandalone || _isHomeApp) {
347    return;
348  }
349  if (!_managedAppSplashScreenViewProvider) {
350    _managedAppSplashScreenViewProvider = [[EXManagedAppSplashScreenViewProvider alloc] initWithManifest:manifest];
351
352    [self _showManagedSplashScreenWithProvider:_managedAppSplashScreenViewProvider];
353  } else {
354    [_managedAppSplashScreenViewProvider updateSplashScreenViewWithManifest:manifest];
355  }
356}
357
358- (void)_showCachedExperienceAlert
359{
360  if (self.isStandalone || self.isHomeApp) {
361    return;
362  }
363
364  dispatch_async(dispatch_get_main_queue(), ^{
365    UIAlertController *alert = [UIAlertController
366                                alertControllerWithTitle:@"Using a cached project"
367                                message:@"If you did not intend to use a cached project, check your network connection and reload."
368                                preferredStyle:UIAlertControllerStyleAlert];
369    [alert addAction:[UIAlertAction actionWithTitle:@"Reload" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
370      [self refresh];
371    }]];
372    [alert addAction:[UIAlertAction actionWithTitle:@"Use cache" style:UIAlertActionStyleCancel handler:nil]];
373    [self presentViewController:alert animated:YES completion:nil];
374  });
375}
376
377- (void)_setLoadingViewStatusIfEnabledFromAppLoader:(EXAbstractLoader *)appLoader
378{
379  if (appLoader.shouldShowRemoteUpdateStatus) {
380    [self.appLoadingProgressWindowController updateStatus:appLoader.remoteUpdateStatus];
381  } else {
382    [self.appLoadingProgressWindowController hide];
383  }
384}
385
386- (void)_showSplashScreenWithProvider:(id<EXSplashScreenViewProvider>)provider
387{
388  EXSplashScreenService *splashScreenService = (EXSplashScreenService *)[EXModuleRegistryProvider getSingletonModuleForClass:[EXSplashScreenService class]];
389
390  // EXSplashScreenService presents a splash screen on a root view controller
391  // at the start of the app. Since we want the EXAppViewController to manage
392  // the lifecycle of the splash screen we need to:
393  // 1. present the splash screen on EXAppViewController
394  // 2. hide the splash screen of root view controller
395  // Disclaimer:
396  //  there's only one root view controller, but possibly many EXAppViewControllers
397  //  (in Expo Go: one project -> one EXAppViewController)
398  //  and we want to hide SplashScreen only once for the root view controller, hence the "once"
399  static dispatch_once_t once;
400  void (^hideRootViewControllerSplashScreen)(void) = ^void() {
401    dispatch_once(&once, ^{
402      UIViewController *rootViewController = [UIApplication sharedApplication].keyWindow.rootViewController;
403      [splashScreenService hideSplashScreenFor:rootViewController
404                                       options:EXSplashScreenDefault
405                               successCallback:^(BOOL hasEffect){}
406                               failureCallback:^(NSString * _Nonnull message) {
407        EXLogWarn(@"Hiding splash screen from root view controller did not succeed: %@", message);
408      }];
409    });
410  };
411
412  EX_WEAKIFY(self);
413  dispatch_async(dispatch_get_main_queue(), ^{
414    EX_ENSURE_STRONGIFY(self);
415    [splashScreenService showSplashScreenFor:self
416                                     options:EXSplashScreenDefault
417                    splashScreenViewProvider:provider
418                             successCallback:hideRootViewControllerSplashScreen
419                             failureCallback:^(NSString *message){ EXLogWarn(@"%@", message); }];
420  });
421}
422
423- (void)_showManagedSplashScreenWithProvider:(id<EXSplashScreenViewProvider>)provider
424{
425
426  EXSplashScreenService *splashScreenService = (EXSplashScreenService *)[EXModuleRegistryProvider getSingletonModuleForClass:[EXSplashScreenService class]];
427
428  EX_WEAKIFY(self);
429  dispatch_async(dispatch_get_main_queue(), ^{
430    EX_ENSURE_STRONGIFY(self);
431
432    UIView *rootView = self.view;
433    UIView *splashScreenView = [provider createSplashScreenView];
434    self.managedSplashScreenController = [[EXManagedAppSplashScreenViewController alloc] initWithRootView:rootView
435                                                                                                 splashScreenView:splashScreenView];
436    [splashScreenService showSplashScreenFor:self
437                                     options:EXSplashScreenDefault
438                      splashScreenController:self.managedSplashScreenController
439                             successCallback:^{}
440                             failureCallback:^(NSString *message){ EXLogWarn(@"%@", message); }];
441  });
442
443}
444
445- (void)hideLoadingProgressWindow
446{
447  [self.appLoadingProgressWindowController hide];
448  if (self.managedSplashScreenController) {
449    [self.managedSplashScreenController startSplashScreenVisibleTimer];
450  }
451}
452
453#pragma mark - EXAppLoaderDelegate
454
455- (void)appLoader:(EXAbstractLoader *)appLoader didLoadOptimisticManifest:(EXManifestsManifest *)manifest
456{
457  if (_appLoadingCancelView) {
458    EX_WEAKIFY(self);
459    dispatch_async(dispatch_get_main_queue(), ^{
460      EX_ENSURE_STRONGIFY(self);
461      [self.appLoadingCancelView removeFromSuperview];
462      self.appLoadingCancelView = nil;
463    });
464  }
465  [self _showOrReconfigureManagedAppSplashScreen:manifest];
466  [self _setLoadingViewStatusIfEnabledFromAppLoader:appLoader];
467  if ([EXKernel sharedInstance].browserController) {
468    [[EXKernel sharedInstance].browserController addHistoryItemWithUrl:appLoader.manifestUrl manifest:manifest];
469  }
470  [self _rebuildBridge];
471}
472
473- (void)appLoader:(EXAbstractLoader *)appLoader didLoadBundleWithProgress:(EXLoadingProgress *)progress
474{
475  if (self->_appRecord.appManager.status != kEXReactAppManagerStatusRunning) {
476    [self.appLoadingProgressWindowController updateStatusWithProgress:progress];
477  }
478}
479
480- (void)appLoader:(EXAbstractLoader *)appLoader didFinishLoadingManifest:(EXManifestsManifest *)manifest bundle:(NSData *)data
481{
482  [self _showOrReconfigureManagedAppSplashScreen:manifest];
483  if (!_isHomeApp) {
484    [EXTextDirectionController setSupportsRTL:[self _readSupportsRTLFromManifest:_appRecord.appLoader.manifest]];
485  }
486  [self _rebuildBridge];
487  if (self->_appRecord.appManager.status == kEXReactAppManagerStatusBridgeLoading) {
488    [self->_appRecord.appManager appLoaderFinished];
489  }
490
491  if (!appLoader.isUpToDate && appLoader.shouldShowRemoteUpdateStatus) {
492    [self _showCachedExperienceAlert];
493  }
494}
495
496- (void)appLoader:(EXAbstractLoader *)appLoader didFailWithError:(NSError *)error
497{
498  if (_appRecord.appManager.status == kEXReactAppManagerStatusBridgeLoading) {
499    [_appRecord.appManager appLoaderFailedWithError:error];
500  }
501  [self maybeShowError:error];
502}
503
504- (void)appLoader:(EXAbstractLoader *)appLoader didResolveUpdatedBundleWithManifest:(EXManifestsManifest * _Nullable)manifest isFromCache:(BOOL)isFromCache error:(NSError * _Nullable)error
505{
506  [[EXKernel sharedInstance].serviceRegistry.updatesManager notifyApp:_appRecord ofDownloadWithManifest:manifest isNew:!isFromCache error:error];
507}
508
509#pragma mark - EXReactAppManagerDelegate
510
511- (void)reactAppManagerIsReadyForLoad:(EXReactAppManager *)appManager
512{
513  UIView *reactView = appManager.rootView;
514  reactView.frame = CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height);
515  reactView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
516  // Set this view to transparent so the root view background color aligns with custom development clients where the
517  // background color is the view controller root view.
518  reactView.backgroundColor = [UIColor clearColor];
519
520  [_contentView removeFromSuperview];
521  _contentView = reactView;
522  [self.view addSubview:_contentView];
523  [self.view sendSubviewToBack:_contentView];
524  [reactView becomeFirstResponder];
525
526  // Set root view background color after adding as subview so we can access window
527  [self _setBackgroundColor];
528}
529
530- (void)reactAppManagerStartedLoadingJavaScript:(EXReactAppManager *)appManager
531{
532  EXAssertMainThread();
533  self.isLoading = YES;
534}
535
536- (void)reactAppManagerFinishedLoadingJavaScript:(EXReactAppManager *)appManager
537{
538  EXAssertMainThread();
539  self.isLoading = NO;
540  if ([EXKernel sharedInstance].browserController) {
541    [[EXKernel sharedInstance].browserController appDidFinishLoadingSuccessfully:_appRecord];
542  }
543}
544
545- (void)reactAppManagerAppContentDidAppear:(EXReactAppManager *)appManager
546{
547  EXSplashScreenService *splashScreenService = (EXSplashScreenService *)[EXModuleRegistryProvider getSingletonModuleForClass:[EXSplashScreenService class]];
548  [splashScreenService onAppContentDidAppear:self];
549}
550
551- (void)reactAppManagerAppContentWillReload:(EXReactAppManager *)appManager {
552  EXSplashScreenService *splashScreenService = (EXSplashScreenService *)[EXModuleRegistryProvider getSingletonModuleForClass:[EXSplashScreenService class]];
553  [splashScreenService onAppContentWillReload:self];
554}
555
556- (void)reactAppManager:(EXReactAppManager *)appManager failedToLoadJavaScriptWithError:(NSError *)error
557{
558  EXAssertMainThread();
559  [self maybeShowError:error];
560}
561
562- (void)reactAppManagerDidInvalidate:(EXReactAppManager *)appManager
563{
564}
565
566- (void)errorViewDidSelectRetry:(EXErrorView *)errorView
567{
568  [self refresh];
569}
570
571#pragma mark - orientation
572
573- (UIInterfaceOrientationMask)supportedInterfaceOrientations
574{
575  if ([self shouldUseRNScreenOrientation]) {
576    return [super supportedInterfaceOrientations];
577  }
578
579#if __has_include(<EXScreenOrientation/EXScreenOrientationRegistry.h>)
580  EXScreenOrientationRegistry *screenOrientationRegistry = (EXScreenOrientationRegistry *)[EXModuleRegistryProvider getSingletonModuleForClass:[EXScreenOrientationRegistry class]];
581  if (screenOrientationRegistry && [screenOrientationRegistry requiredOrientationMask] > 0) {
582    return [screenOrientationRegistry requiredOrientationMask];
583  }
584#endif
585
586  return [self orientationMaskFromManifestOrDefault];
587}
588
589- (BOOL)shouldUseRNScreenOrientation
590{
591  Class screenWindowTraitsClass = [self->_appRecord.appManager versionedClassFromString:@"RNSScreenWindowTraits"];
592  if ([screenWindowTraitsClass respondsToSelector:@selector(shouldAskScreensForScreenOrientationInViewController:)]) {
593    id<EXKernelRNSScreenWindowTraits> screenWindowTraits = (id<EXKernelRNSScreenWindowTraits>)screenWindowTraitsClass;
594    return [screenWindowTraits shouldAskScreensForScreenOrientationInViewController:self];
595  }
596  return NO;
597}
598
599- (UIInterfaceOrientationMask)orientationMaskFromManifestOrDefault {
600  if (_appRecord.appLoader.manifest) {
601    NSString *orientationConfig = _appRecord.appLoader.manifest.orientation;
602    if ([orientationConfig isEqualToString:@"portrait"]) {
603      // lock to portrait
604      return UIInterfaceOrientationMaskPortrait;
605    } else if ([orientationConfig isEqualToString:@"landscape"]) {
606      // lock to landscape
607      return UIInterfaceOrientationMaskLandscape;
608    }
609  }
610  // no config or default value: allow autorotation
611  return UIInterfaceOrientationMaskAllButUpsideDown;
612}
613
614- (void)traitCollectionDidChange:(nullable UITraitCollection *)previousTraitCollection {
615  [super traitCollectionDidChange:previousTraitCollection];
616  if ((self.traitCollection.verticalSizeClass != previousTraitCollection.verticalSizeClass)
617      || (self.traitCollection.horizontalSizeClass != previousTraitCollection.horizontalSizeClass)) {
618
619    #if __has_include(<EXScreenOrientation/EXScreenOrientationRegistry.h>)
620      EXScreenOrientationRegistry *screenOrientationRegistryController = (EXScreenOrientationRegistry *)[EXModuleRegistryProvider getSingletonModuleForClass:[EXScreenOrientationRegistry class]];
621      [screenOrientationRegistryController traitCollectionDidChangeTo:self.traitCollection];
622    #endif
623  }
624}
625
626#pragma mark - RCTAppearanceModule
627
628/**
629 * This function overrides behaviour of RCTAppearanceModule
630 * basing on 'userInterfaceStyle' option from the app manifest.
631 * It also defaults the RCTAppearanceModule to 'light'.
632 */
633- (void)_overrideAppearanceModuleBehaviour
634{
635  NSString *userInterfaceStyle = [self _readUserInterfaceStyleFromManifest:_appRecord.appLoader.manifest];
636  NSString *appearancePreference = nil;
637  if ([userInterfaceStyle isEqualToString:@"light"]) {
638    appearancePreference = @"light";
639  } else if ([userInterfaceStyle isEqualToString:@"dark"]) {
640    appearancePreference = @"dark";
641  } else if ([userInterfaceStyle isEqualToString:@"automatic"]) {
642    appearancePreference = nil;
643  }
644  RCTOverrideAppearancePreference(appearancePreference);
645#if defined(INCLUDES_VERSIONED_CODE) && __has_include(<ABI47_0_0React/ABI47_0_0RCTAppearance.h>)
646  ABI47_0_0RCTOverrideAppearancePreference(appearancePreference);
647#endif
648#if defined(INCLUDES_VERSIONED_CODE) && __has_include(<ABI46_0_0React/ABI46_0_0RCTAppearance.h>)
649  ABI46_0_0RCTOverrideAppearancePreference(appearancePreference);
650#endif
651
652}
653
654#pragma mark - user interface style
655
656- (void)_overrideUserInterfaceStyleOf:(UIViewController *)viewController
657{
658  if (@available(iOS 13.0, *)) {
659    NSString *userInterfaceStyle = [self _readUserInterfaceStyleFromManifest:_appRecord.appLoader.manifest];
660    viewController.overrideUserInterfaceStyle = [self _userInterfaceStyleForString:userInterfaceStyle];
661  }
662}
663
664- (NSString * _Nullable)_readUserInterfaceStyleFromManifest:(EXManifestsManifest *)manifest
665{
666  return manifest.userInterfaceStyle;
667}
668
669- (UIUserInterfaceStyle)_userInterfaceStyleForString:(NSString *)userInterfaceStyleString API_AVAILABLE(ios(12.0)) {
670  if ([userInterfaceStyleString isEqualToString:@"dark"]) {
671    return UIUserInterfaceStyleDark;
672  }
673  if ([userInterfaceStyleString isEqualToString:@"automatic"]) {
674    return UIUserInterfaceStyleUnspecified;
675  }
676  if ([userInterfaceStyleString isEqualToString:@"light"]) {
677    return UIUserInterfaceStyleLight;
678  }
679
680  return UIUserInterfaceStyleUnspecified;
681}
682
683#pragma mark - root view and window background color
684
685- (void)_setBackgroundColor
686{
687    NSString *backgroundColorString = [self _readBackgroundColorFromManifest:_appRecord.appLoader.manifest];
688    UIColor *backgroundColor = [EXUtil colorWithHexString:backgroundColorString];
689    self.view.backgroundColor = [UIColor clearColor];
690
691    // NOTE(evanbacon): `self.view.window.rootViewController.view` represents the top-most window's root view controller's view which is the same
692    // view we set in `expo-system-ui`'s `setBackgroundColorAsync` method.
693    if (backgroundColor) {
694      if (self.view.window.rootViewController != nil && self.view.window.rootViewController.view != nil) {
695        self.view.window.rootViewController.view.backgroundColor = backgroundColor;
696      }
697      self.view.window.backgroundColor = backgroundColor;
698    } else {
699      // Reset this color to white so splash and other screens don't load against a black background.
700      if (self.view.window.rootViewController != nil && self.view.window.rootViewController.view != nil) {
701        self.view.window.rootViewController.view.backgroundColor = [UIColor whiteColor];
702      }
703      // NOTE(brentvatne): we used to use white as a default background color for window but this caused
704      // problems when using form sheet presentation style with vcs eg: <Modal /> and native-stack. Most
705      // users expect the background behind these to be black, which is the default if backgroundColor is nil.
706      self.view.window.backgroundColor = nil;
707
708      // NOTE(brentvatne): we may want to default to respecting the default system background color
709      // on iOS13 and higher, but if we do make this choice then we will have to implement it on Android
710      // as well. This would also be a breaking change. Leaving this here as a placeholder for the future.
711      // if (@available(iOS 13.0, *)) {
712      //   self.view.backgroundColor = [UIColor systemBackgroundColor];
713      // } else {
714      //  self.view.backgroundColor = [UIColor whiteColor];
715      // }
716    }
717}
718
719- (NSString * _Nullable)_readBackgroundColorFromManifest:(EXManifestsManifest *)manifest
720{
721  return manifest.iosOrRootBackgroundColor;
722}
723
724
725#pragma mark - Internal
726
727- (void)_showErrorWithType:(EXFatalErrorType)type error:(nullable NSError *)error
728{
729  EXAssertMainThread();
730  _dtmLastFatalErrorShown = [NSDate date];
731  if (_errorView && _contentView == _errorView) {
732    // already showing, just update
733    _errorView.type = type;
734    _errorView.error = error;
735  } {
736    [_contentView removeFromSuperview];
737    if (!_errorView) {
738      _errorView = [[EXErrorView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
739      _errorView.delegate = self;
740      _errorView.appRecord = _appRecord;
741    }
742    _errorView.type = type;
743    _errorView.error = error;
744    _contentView = _errorView;
745    [self.view addSubview:_contentView];
746    [[EXAnalytics sharedInstance] logErrorVisibleEvent];
747  }
748}
749
750- (void)setIsLoading:(BOOL)isLoading
751{
752  if ([_appRecord.appManager enablesDeveloperTools] && _dtmLastFatalErrorShown) {
753    if ([_dtmLastFatalErrorShown timeIntervalSinceNow] >= -kEXDevelopmentErrorCoolDownSeconds) {
754      // we just showed a fatal error very recently, do not begin loading.
755      // this can happen in some cases where react native sends the 'started loading' notif
756      // in spite of a packager error.
757      return;
758    }
759  }
760  _isLoading = isLoading;
761  EX_WEAKIFY(self);
762  dispatch_async(dispatch_get_main_queue(), ^{
763    EX_ENSURE_STRONGIFY(self);
764    if (!isLoading) {
765      [self.appLoadingProgressWindowController hide];
766    }
767  });
768}
769
770#pragma mark - error recovery
771
772- (BOOL)_willAutoRecoverFromError:(NSError *)error
773{
774  if (![_appRecord.appManager enablesDeveloperTools]) {
775    BOOL shouldRecover = [[EXKernel sharedInstance].serviceRegistry.errorRecoveryManager experienceShouldReloadOnError:_appRecord.scopeKey];
776    if (shouldRecover) {
777      [self _invalidateRecoveryTimer];
778      _tmrAutoReloadDebounce = [NSTimer scheduledTimerWithTimeInterval:kEXAutoReloadDebounceSeconds
779                                                                target:self
780                                                              selector:@selector(refresh)
781                                                              userInfo:nil
782                                                               repeats:NO];
783    }
784    return shouldRecover;
785  }
786  return NO;
787}
788
789- (void)_invalidateRecoveryTimer
790{
791  if (_tmrAutoReloadDebounce) {
792    [_tmrAutoReloadDebounce invalidate];
793    _tmrAutoReloadDebounce = nil;
794  }
795}
796
797#pragma mark - EXAppLoadingCancelViewDelegate
798
799- (void)appLoadingCancelViewDidCancel:(EXAppLoadingCancelView *)view {
800  if ([EXKernel sharedInstance].browserController) {
801    [[EXKernel sharedInstance].browserController moveHomeToVisible];
802  }
803}
804
805@end
806
807NS_ASSUME_NONNULL_END
808