1// Copyright 2015-present 650 Industries. All rights reserved.
2
3@import UIKit;
4
5#import "EXAnalytics.h"
6#import "EXAppLoader.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#if defined(INCLUDES_VERSIONED_CODE) && __has_include(<ABI45_0_0React/ABI45_0_0RCTAppearance.h>)
41#import <ABI45_0_0React/ABI45_0_0RCTAppearance.h>
42#endif
43
44#define EX_INTERFACE_ORIENTATION_USE_MANIFEST 0
45
46// when we encounter an error and auto-refresh, we may actually see a series of errors.
47// we only want to trigger refresh once, so we debounce refresh on a timer.
48const CGFloat kEXAutoReloadDebounceSeconds = 0.1;
49
50// in development only, some errors can happen before we even start loading
51// (e.g. certain packager errors, such as an invalid bundle url)
52// and we want to make sure not to cover the error with a loading view or other chrome.
53const CGFloat kEXDevelopmentErrorCoolDownSeconds = 0.1;
54
55// copy of RNScreens protocol
56@protocol EXKernelRNSScreenWindowTraits
57
58+ (BOOL)shouldAskScreensForScreenOrientationInViewController:(UIViewController *)vc;
59
60@end
61
62NS_ASSUME_NONNULL_BEGIN
63
64@interface EXAppViewController ()
65  <EXReactAppManagerUIDelegate, EXAppLoaderDelegate, EXErrorViewDelegate, EXAppLoadingCancelViewDelegate>
66
67@property (nonatomic, assign) BOOL isLoading;
68@property (atomic, assign) BOOL isBridgeAlreadyLoading;
69@property (nonatomic, weak) EXKernelAppRecord *appRecord;
70@property (nonatomic, strong) EXErrorView *errorView;
71@property (nonatomic, strong) NSTimer *tmrAutoReloadDebounce;
72@property (nonatomic, strong) NSDate *dtmLastFatalErrorShown;
73@property (nonatomic, strong) NSMutableArray<UIViewController *> *backgroundedControllers;
74
75@property (nonatomic, assign) BOOL isStandalone;
76@property (nonatomic, assign) BOOL isHomeApp;
77
78/*
79 * Controller for handling all messages from bundler/fetcher.
80 * It shows another UIWindow with text and percentage progress.
81 * Enabled only in managed workflow or home when in development mode.
82 * It should appear once manifest is fetched.
83 */
84@property (nonatomic, strong, nonnull) EXAppLoadingProgressWindowController *appLoadingProgressWindowController;
85
86/**
87 * SplashScreenViewProvider that is used only in managed workflow app.
88 * Managed app does not need any specific SplashScreenViewProvider as it uses generic one povided by the SplashScreen module.
89 * See also EXHomeAppSplashScreenViewProvider in self.viewDidLoad
90 */
91@property (nonatomic, strong, nullable) EXManagedAppSplashScreenViewProvider *managedAppSplashScreenViewProvider;
92@property (nonatomic, strong, nullable) EXManagedAppSplashScreenViewController *managedSplashScreenController;
93
94/*
95 * This view is available in managed apps run in Expo Go only.
96 * It is shown only before any managed app manifest is delivered by the app loader.
97 */
98@property (nonatomic, strong, nullable) EXAppLoadingCancelView *appLoadingCancelView;
99
100@end
101
102@implementation EXAppViewController
103
104#pragma mark - Lifecycle
105
106- (instancetype)initWithAppRecord:(EXKernelAppRecord *)record
107{
108  if (self = [super init]) {
109    _appRecord = record;
110    _isStandalone = [EXEnvironment sharedEnvironment].isDetached;
111  }
112  return self;
113}
114
115- (void)dealloc
116{
117  [self _invalidateRecoveryTimer];
118  [[NSNotificationCenter defaultCenter] removeObserver:self];
119}
120
121- (void)viewDidLoad
122{
123  [super viewDidLoad];
124
125  // EXKernel.appRegistry.homeAppRecord does not contain any homeAppRecord until this point,
126  // therefore we cannot move this property initialization to the constructor/initializer
127  _isHomeApp = _appRecord == [EXKernel sharedInstance].appRegistry.homeAppRecord;
128
129  // show LoadingCancelView in managed apps only
130  if (!self.isStandalone && !self.isHomeApp) {
131    self.appLoadingCancelView = [EXAppLoadingCancelView new];
132    // if home app is available then LoadingCancelView can show `go to home` button
133    if ([EXKernel sharedInstance].appRegistry.homeAppRecord) {
134      self.appLoadingCancelView.delegate = self;
135    }
136    [self.view addSubview:self.appLoadingCancelView];
137    [self.view bringSubviewToFront:self.appLoadingCancelView];
138  }
139
140  // show LoadingProgressWindow in the development client for all apps other than production home
141  BOOL isProductionHomeApp = self.isHomeApp && ![EXEnvironment sharedEnvironment].isDebugXCodeScheme;
142  self.appLoadingProgressWindowController = [[EXAppLoadingProgressWindowController alloc] initWithEnabled:!self.isStandalone && !isProductionHomeApp];
143
144  // show SplashScreen in standalone apps and home app only
145  // SplashScreen for managed is shown once the manifest is available
146  if (self.isHomeApp) {
147    EXHomeAppSplashScreenViewProvider *homeAppSplashScreenViewProvider = [EXHomeAppSplashScreenViewProvider new];
148    [self _showSplashScreenWithProvider:homeAppSplashScreenViewProvider];
149  } else if (self.isStandalone) {
150    [self _showSplashScreenWithProvider:[EXSplashScreenViewNativeProvider new]];
151  }
152
153  self.view.backgroundColor = [UIColor whiteColor];
154  _appRecord.appManager.delegate = self;
155  self.isLoading = YES;
156}
157
158- (void)viewDidAppear:(BOOL)animated
159{
160  [super viewDidAppear:animated];
161  if (_appRecord && _appRecord.status == kEXKernelAppRecordStatusNew) {
162    _appRecord.appLoader.delegate = self;
163    _appRecord.appLoader.dataSource = _appRecord.appManager;
164    [self refresh];
165  }
166}
167
168- (BOOL)shouldAutorotate
169{
170  return YES;
171}
172
173- (void)viewWillLayoutSubviews
174{
175  [super viewWillLayoutSubviews];
176  if (_appLoadingCancelView) {
177    _appLoadingCancelView.frame = CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height);
178  }
179  if (_contentView) {
180    _contentView.frame = CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height);
181  }
182}
183
184- (void)viewWillDisappear:(BOOL)animated
185{
186  [_appLoadingProgressWindowController hide];
187  [super viewWillDisappear:animated];
188}
189
190/**
191 * Force presented view controllers to use the same user interface style.
192 */
193- (void)presentViewController:(UIViewController *)viewControllerToPresent animated: (BOOL)flag completion:(void (^ __nullable)(void))completion
194{
195  [super presentViewController:viewControllerToPresent animated:flag completion:completion];
196  [self _overrideUserInterfaceStyleOf:viewControllerToPresent];
197}
198
199/**
200 * Force child view controllers to use the same user interface style.
201 */
202- (void)addChildViewController:(UIViewController *)childController
203{
204  [super addChildViewController:childController];
205  [self _overrideUserInterfaceStyleOf:childController];
206}
207
208#pragma mark - Public
209
210- (void)maybeShowError:(NSError *)error
211{
212  self.isLoading = NO;
213  if ([self _willAutoRecoverFromError:error]) {
214    return;
215  }
216  if (error && ![error isKindOfClass:[NSError class]]) {
217#if DEBUG
218    NSAssert(NO, @"AppViewController error handler was called on an object that isn't an NSError");
219#endif
220    return;
221  }
222
223  // we don't ever want to show any Expo UI in a production standalone app, so hard crash
224  if ([EXEnvironment sharedEnvironment].isDetached && ![_appRecord.appManager enablesDeveloperTools]) {
225    NSException *e = [NSException exceptionWithName:@"ExpoFatalError"
226                                             reason:[NSString stringWithFormat:@"Expo encountered a fatal error: %@", [error localizedDescription]]
227                                           userInfo:@{NSUnderlyingErrorKey: error}];
228    @throw e;
229  }
230
231  NSString *domain = (error && error.domain) ? error.domain : @"";
232  BOOL isNetworkError = ([domain isEqualToString:(NSString *)kCFErrorDomainCFNetwork] || [domain isEqualToString:NSURLErrorDomain] || [domain isEqualToString:EXNetworkErrorDomain]);
233
234  if (isNetworkError) {
235    // show a human-readable reachability error
236    dispatch_async(dispatch_get_main_queue(), ^{
237      [self _showErrorWithType:kEXFatalErrorTypeLoading error:error];
238    });
239  } else if ([domain isEqualToString:@"JSServer"] && [_appRecord.appManager enablesDeveloperTools]) {
240    // RCTRedBox already handled this
241  } else if ([domain rangeOfString:RCTErrorDomain].length > 0 && [_appRecord.appManager enablesDeveloperTools]) {
242    // RCTRedBox already handled this
243  } else {
244    dispatch_async(dispatch_get_main_queue(), ^{
245      [self _showErrorWithType:kEXFatalErrorTypeException error:error];
246    });
247  }
248}
249
250- (void)refresh
251{
252  self.isLoading = YES;
253  self.isBridgeAlreadyLoading = NO;
254  [self _invalidateRecoveryTimer];
255  [_appRecord.appLoader request];
256}
257
258- (void)reloadFromCache
259{
260  self.isLoading = YES;
261  self.isBridgeAlreadyLoading = NO;
262  [self _invalidateRecoveryTimer];
263  [_appRecord.appLoader requestFromCache];
264}
265
266- (void)appStateDidBecomeActive
267{
268  dispatch_async(dispatch_get_main_queue(), ^{
269    // Reset the root view background color and window color if we switch between Expo home and project
270    [self _setBackgroundColor];
271  });
272}
273
274- (void)appStateDidBecomeInactive
275{
276}
277
278- (void)_rebuildBridge
279{
280  if (!self.isBridgeAlreadyLoading) {
281    self.isBridgeAlreadyLoading = YES;
282    dispatch_async(dispatch_get_main_queue(), ^{
283      [self _overrideUserInterfaceStyleOf:self];
284      [self _overrideAppearanceModuleBehaviour];
285      [self _invalidateRecoveryTimer];
286      [[EXKernel sharedInstance] logAnalyticsEvent:@"LOAD_EXPERIENCE" forAppRecord:self.appRecord];
287      [self.appRecord.appManager rebuildBridge];
288    });
289  }
290}
291
292- (void)foregroundControllers
293{
294  if (_backgroundedControllers != nil) {
295    __block UIViewController *parentController = self;
296
297    [_backgroundedControllers enumerateObjectsUsingBlock:^(UIViewController * _Nonnull viewController, NSUInteger idx, BOOL * _Nonnull stop) {
298      [parentController presentViewController:viewController animated:NO completion:nil];
299      parentController = viewController;
300    }];
301
302    _backgroundedControllers = nil;
303  }
304}
305
306- (void)backgroundControllers
307{
308  UIViewController *childController = [self presentedViewController];
309
310  if (childController != nil) {
311    if (_backgroundedControllers == nil) {
312      _backgroundedControllers = [NSMutableArray new];
313    }
314
315    while (childController != nil) {
316      [_backgroundedControllers addObject:childController];
317      childController = childController.presentedViewController;
318    }
319  }
320}
321
322/**
323 * In managed app we expect two kinds of manifest:
324 * - optimistic one (served from cache)
325 * - actual one served when app is fetched.
326 * For each of them we should show SplashScreen,
327 * therefore for any consecutive SplashScreen.show call we just reconfigure what's already visible.
328 * In HomeApp or standalone apps this function is no-op as SplashScreen is managed differently.
329 */
330- (void)_showOrReconfigureManagedAppSplashScreen:(EXManifestsManifest *)manifest
331{
332  if (_isStandalone || _isHomeApp) {
333    return;
334  }
335  if (!_managedAppSplashScreenViewProvider) {
336    _managedAppSplashScreenViewProvider = [[EXManagedAppSplashScreenViewProvider alloc] initWithManifest:manifest];
337
338    [self _showManagedSplashScreenWithProvider:_managedAppSplashScreenViewProvider];
339  } else {
340    [_managedAppSplashScreenViewProvider updateSplashScreenViewWithManifest:manifest];
341  }
342}
343
344- (void)_showCachedExperienceAlert
345{
346  if (self.isStandalone || self.isHomeApp) {
347    return;
348  }
349
350  dispatch_async(dispatch_get_main_queue(), ^{
351    UIAlertController *alert = [UIAlertController
352                                alertControllerWithTitle:@"Using a cached project"
353                                message:@"If you did not intend to use a cached project, check your network connection and reload."
354                                preferredStyle:UIAlertControllerStyleAlert];
355    [alert addAction:[UIAlertAction actionWithTitle:@"Reload" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
356      [self refresh];
357    }]];
358    [alert addAction:[UIAlertAction actionWithTitle:@"Use cache" style:UIAlertActionStyleCancel handler:nil]];
359    [self presentViewController:alert animated:YES completion:nil];
360  });
361}
362
363- (void)_setLoadingViewStatusIfEnabledFromAppLoader:(EXAppLoader *)appLoader
364{
365  if (appLoader.shouldShowRemoteUpdateStatus) {
366    [self.appLoadingProgressWindowController updateStatus:appLoader.remoteUpdateStatus];
367  } else {
368    [self.appLoadingProgressWindowController hide];
369  }
370}
371
372- (void)_showSplashScreenWithProvider:(id<EXSplashScreenViewProvider>)provider
373{
374  EXSplashScreenService *splashScreenService = (EXSplashScreenService *)[EXModuleRegistryProvider getSingletonModuleForClass:[EXSplashScreenService class]];
375
376  // EXSplashScreenService presents a splash screen on a root view controller
377  // at the start of the app. Since we want the EXAppViewController to manage
378  // the lifecycle of the splash screen we need to:
379  // 1. present the splash screen on EXAppViewController
380  // 2. hide the splash screen of root view controller
381  // Disclaimer:
382  //  there's only one root view controller, but possibly many EXAppViewControllers
383  //  (in Expo Go: one project -> one EXAppViewController)
384  //  and we want to hide SplashScreen only once for the root view controller, hence the "once"
385  static dispatch_once_t once;
386  void (^hideRootViewControllerSplashScreen)(void) = ^void() {
387    dispatch_once(&once, ^{
388      UIViewController *rootViewController = [UIApplication sharedApplication].keyWindow.rootViewController;
389      [splashScreenService hideSplashScreenFor:rootViewController
390                                       options:EXSplashScreenDefault
391                               successCallback:^(BOOL hasEffect){}
392                               failureCallback:^(NSString * _Nonnull message) {
393        EXLogWarn(@"Hiding splash screen from root view controller did not succeed: %@", message);
394      }];
395    });
396  };
397
398  EX_WEAKIFY(self);
399  dispatch_async(dispatch_get_main_queue(), ^{
400    EX_ENSURE_STRONGIFY(self);
401    [splashScreenService showSplashScreenFor:self
402                                     options:EXSplashScreenDefault
403                    splashScreenViewProvider:provider
404                             successCallback:hideRootViewControllerSplashScreen
405                             failureCallback:^(NSString *message){ EXLogWarn(@"%@", message); }];
406  });
407}
408
409- (void)_showManagedSplashScreenWithProvider:(id<EXSplashScreenViewProvider>)provider
410{
411
412  EXSplashScreenService *splashScreenService = (EXSplashScreenService *)[EXModuleRegistryProvider getSingletonModuleForClass:[EXSplashScreenService class]];
413
414  EX_WEAKIFY(self);
415  dispatch_async(dispatch_get_main_queue(), ^{
416    EX_ENSURE_STRONGIFY(self);
417
418    UIView *rootView = self.view;
419    UIView *splashScreenView = [provider createSplashScreenView];
420    self.managedSplashScreenController = [[EXManagedAppSplashScreenViewController alloc] initWithRootView:rootView
421                                                                                                 splashScreenView:splashScreenView];
422    [splashScreenService showSplashScreenFor:self
423                                     options:EXSplashScreenDefault
424                      splashScreenController:self.managedSplashScreenController
425                             successCallback:^{}
426                             failureCallback:^(NSString *message){ EXLogWarn(@"%@", message); }];
427  });
428
429}
430
431- (void)hideLoadingProgressWindow
432{
433  [self.appLoadingProgressWindowController hide];
434  if (self.managedSplashScreenController) {
435    [self.managedSplashScreenController startSplashScreenVisibleTimer];
436  }
437}
438
439#pragma mark - EXAppLoaderDelegate
440
441- (void)appLoader:(EXAppLoader *)appLoader didLoadOptimisticManifest:(EXManifestsManifest *)manifest
442{
443  if (_appLoadingCancelView) {
444    EX_WEAKIFY(self);
445    dispatch_async(dispatch_get_main_queue(), ^{
446      EX_ENSURE_STRONGIFY(self);
447      [self.appLoadingCancelView removeFromSuperview];
448      self.appLoadingCancelView = nil;
449    });
450  }
451  [self _showOrReconfigureManagedAppSplashScreen:manifest];
452  [self _setLoadingViewStatusIfEnabledFromAppLoader:appLoader];
453  if ([EXKernel sharedInstance].browserController) {
454    [[EXKernel sharedInstance].browserController addHistoryItemWithUrl:appLoader.manifestUrl manifest:manifest];
455  }
456  [self _rebuildBridge];
457}
458
459- (void)appLoader:(EXAppLoader *)appLoader didLoadBundleWithProgress:(EXLoadingProgress *)progress
460{
461  if (self->_appRecord.appManager.status != kEXReactAppManagerStatusRunning) {
462    [self.appLoadingProgressWindowController updateStatusWithProgress:progress];
463  }
464}
465
466- (void)appLoader:(EXAppLoader *)appLoader didFinishLoadingManifest:(EXManifestsManifest *)manifest bundle:(NSData *)data
467{
468  [self _showOrReconfigureManagedAppSplashScreen:manifest];
469  [self _rebuildBridge];
470  if (self->_appRecord.appManager.status == kEXReactAppManagerStatusBridgeLoading) {
471    [self->_appRecord.appManager appLoaderFinished];
472  }
473
474  if (!appLoader.isUpToDate && appLoader.shouldShowRemoteUpdateStatus) {
475    [self _showCachedExperienceAlert];
476  }
477}
478
479- (void)appLoader:(EXAppLoader *)appLoader didFailWithError:(NSError *)error
480{
481  if (_appRecord.appManager.status == kEXReactAppManagerStatusBridgeLoading) {
482    [_appRecord.appManager appLoaderFailedWithError:error];
483  }
484  [self maybeShowError:error];
485}
486
487- (void)appLoader:(EXAppLoader *)appLoader didResolveUpdatedBundleWithManifest:(EXManifestsManifest * _Nullable)manifest isFromCache:(BOOL)isFromCache error:(NSError * _Nullable)error
488{
489  [[EXKernel sharedInstance].serviceRegistry.updatesManager notifyApp:_appRecord ofDownloadWithManifest:manifest isNew:!isFromCache error:error];
490}
491
492#pragma mark - EXReactAppManagerDelegate
493
494- (void)reactAppManagerIsReadyForLoad:(EXReactAppManager *)appManager
495{
496  UIView *reactView = appManager.rootView;
497  reactView.frame = CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height);
498  reactView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
499  // Set this view to transparent so the root view background color aligns with custom development clients where the
500  // background color is the view controller root view.
501  reactView.backgroundColor = [UIColor clearColor];
502
503  [_contentView removeFromSuperview];
504  _contentView = reactView;
505  [self.view addSubview:_contentView];
506  [self.view sendSubviewToBack:_contentView];
507  [reactView becomeFirstResponder];
508
509  // Set root view background color after adding as subview so we can access window
510  [self _setBackgroundColor];
511}
512
513- (void)reactAppManagerStartedLoadingJavaScript:(EXReactAppManager *)appManager
514{
515  EXAssertMainThread();
516  self.isLoading = YES;
517}
518
519- (void)reactAppManagerFinishedLoadingJavaScript:(EXReactAppManager *)appManager
520{
521  EXAssertMainThread();
522  self.isLoading = NO;
523  if ([EXKernel sharedInstance].browserController) {
524    [[EXKernel sharedInstance].browserController appDidFinishLoadingSuccessfully:_appRecord];
525  }
526}
527
528- (void)reactAppManagerAppContentDidAppear:(EXReactAppManager *)appManager
529{
530  EXSplashScreenService *splashScreenService = (EXSplashScreenService *)[EXModuleRegistryProvider getSingletonModuleForClass:[EXSplashScreenService class]];
531  [splashScreenService onAppContentDidAppear:self];
532}
533
534- (void)reactAppManagerAppContentWillReload:(EXReactAppManager *)appManager {
535  EXSplashScreenService *splashScreenService = (EXSplashScreenService *)[EXModuleRegistryProvider getSingletonModuleForClass:[EXSplashScreenService class]];
536  [splashScreenService onAppContentWillReload:self];
537}
538
539- (void)reactAppManager:(EXReactAppManager *)appManager failedToLoadJavaScriptWithError:(NSError *)error
540{
541  EXAssertMainThread();
542  [self maybeShowError:error];
543}
544
545- (void)reactAppManagerDidInvalidate:(EXReactAppManager *)appManager
546{
547}
548
549- (void)errorViewDidSelectRetry:(EXErrorView *)errorView
550{
551  [self refresh];
552}
553
554#pragma mark - orientation
555
556- (UIInterfaceOrientationMask)supportedInterfaceOrientations
557{
558  if ([self shouldUseRNScreenOrientation]) {
559    return [super supportedInterfaceOrientations];
560  }
561
562#if __has_include(<EXScreenOrientation/EXScreenOrientationRegistry.h>)
563  EXScreenOrientationRegistry *screenOrientationRegistry = (EXScreenOrientationRegistry *)[EXModuleRegistryProvider getSingletonModuleForClass:[EXScreenOrientationRegistry class]];
564  if (screenOrientationRegistry && [screenOrientationRegistry requiredOrientationMask] > 0) {
565    return [screenOrientationRegistry requiredOrientationMask];
566  }
567#endif
568
569  return [self orientationMaskFromManifestOrDefault];
570}
571
572- (BOOL)shouldUseRNScreenOrientation
573{
574  Class screenWindowTraitsClass = [self->_appRecord.appManager versionedClassFromString:@"RNSScreenWindowTraits"];
575  if ([screenWindowTraitsClass respondsToSelector:@selector(shouldAskScreensForScreenOrientationInViewController:)]) {
576    id<EXKernelRNSScreenWindowTraits> screenWindowTraits = (id<EXKernelRNSScreenWindowTraits>)screenWindowTraitsClass;
577    return [screenWindowTraits shouldAskScreensForScreenOrientationInViewController:self];
578  }
579  return NO;
580}
581
582- (UIInterfaceOrientationMask)orientationMaskFromManifestOrDefault {
583  if (_appRecord.appLoader.manifest) {
584    NSString *orientationConfig = _appRecord.appLoader.manifest.orientation;
585    if ([orientationConfig isEqualToString:@"portrait"]) {
586      // lock to portrait
587      return UIInterfaceOrientationMaskPortrait;
588    } else if ([orientationConfig isEqualToString:@"landscape"]) {
589      // lock to landscape
590      return UIInterfaceOrientationMaskLandscape;
591    }
592  }
593  // no config or default value: allow autorotation
594  return UIInterfaceOrientationMaskAllButUpsideDown;
595}
596
597- (void)traitCollectionDidChange:(nullable UITraitCollection *)previousTraitCollection {
598  [super traitCollectionDidChange:previousTraitCollection];
599  if ((self.traitCollection.verticalSizeClass != previousTraitCollection.verticalSizeClass)
600      || (self.traitCollection.horizontalSizeClass != previousTraitCollection.horizontalSizeClass)) {
601
602    #if __has_include(<EXScreenOrientation/EXScreenOrientationRegistry.h>)
603      EXScreenOrientationRegistry *screenOrientationRegistryController = (EXScreenOrientationRegistry *)[EXModuleRegistryProvider getSingletonModuleForClass:[EXScreenOrientationRegistry class]];
604      [screenOrientationRegistryController traitCollectionDidChangeTo:self.traitCollection];
605    #endif
606  }
607}
608
609#pragma mark - RCTAppearanceModule
610
611/**
612 * This function overrides behaviour of RCTAppearanceModule
613 * basing on 'userInterfaceStyle' option from the app manifest.
614 * It also defaults the RCTAppearanceModule to 'light'.
615 */
616- (void)_overrideAppearanceModuleBehaviour
617{
618  NSString *userInterfaceStyle = [self _readUserInterfaceStyleFromManifest:_appRecord.appLoader.manifest];
619  NSString *appearancePreference = nil;
620  if ([userInterfaceStyle isEqualToString:@"light"]) {
621    appearancePreference = @"light";
622  } else if ([userInterfaceStyle isEqualToString:@"dark"]) {
623    appearancePreference = @"dark";
624  } else if ([userInterfaceStyle isEqualToString:@"automatic"]) {
625    appearancePreference = nil;
626  }
627  RCTOverrideAppearancePreference(appearancePreference);
628#if defined(INCLUDES_VERSIONED_CODE) && __has_include(<ABI47_0_0React/ABI47_0_0RCTAppearance.h>)
629  ABI47_0_0RCTOverrideAppearancePreference(appearancePreference);
630#endif
631#if defined(INCLUDES_VERSIONED_CODE) && __has_include(<ABI46_0_0React/ABI46_0_0RCTAppearance.h>)
632  ABI46_0_0RCTOverrideAppearancePreference(appearancePreference);
633#endif
634#if defined(INCLUDES_VERSIONED_CODE) && __has_include(<ABI45_0_0React/ABI45_0_0RCTAppearance.h>)
635  ABI45_0_0RCTOverrideAppearancePreference(appearancePreference);
636#endif
637
638}
639
640#pragma mark - user interface style
641
642- (void)_overrideUserInterfaceStyleOf:(UIViewController *)viewController
643{
644  if (@available(iOS 13.0, *)) {
645    NSString *userInterfaceStyle = [self _readUserInterfaceStyleFromManifest:_appRecord.appLoader.manifest];
646    viewController.overrideUserInterfaceStyle = [self _userInterfaceStyleForString:userInterfaceStyle];
647  }
648}
649
650- (NSString * _Nullable)_readUserInterfaceStyleFromManifest:(EXManifestsManifest *)manifest
651{
652  return manifest.userInterfaceStyle;
653}
654
655- (UIUserInterfaceStyle)_userInterfaceStyleForString:(NSString *)userInterfaceStyleString API_AVAILABLE(ios(12.0)) {
656  if ([userInterfaceStyleString isEqualToString:@"dark"]) {
657    return UIUserInterfaceStyleDark;
658  }
659  if ([userInterfaceStyleString isEqualToString:@"automatic"]) {
660    return UIUserInterfaceStyleUnspecified;
661  }
662  if ([userInterfaceStyleString isEqualToString:@"light"]) {
663    return UIUserInterfaceStyleLight;
664  }
665
666  return UIUserInterfaceStyleUnspecified;
667}
668
669#pragma mark - root view and window background color
670
671- (void)_setBackgroundColor
672{
673    NSString *backgroundColorString = [self _readBackgroundColorFromManifest:_appRecord.appLoader.manifest];
674    UIColor *backgroundColor = [EXUtil colorWithHexString:backgroundColorString];
675    self.view.backgroundColor = [UIColor clearColor];
676
677    // NOTE(evanbacon): `self.view.window.rootViewController.view` represents the top-most window's root view controller's view which is the same
678    // view we set in `expo-system-ui`'s `setBackgroundColorAsync` method.
679    if (backgroundColor) {
680      if (self.view.window.rootViewController != nil && self.view.window.rootViewController.view != nil) {
681        self.view.window.rootViewController.view.backgroundColor = backgroundColor;
682      }
683      self.view.window.backgroundColor = backgroundColor;
684    } else {
685      // Reset this color to white so splash and other screens don't load against a black background.
686      if (self.view.window.rootViewController != nil && self.view.window.rootViewController.view != nil) {
687        self.view.window.rootViewController.view.backgroundColor = [UIColor whiteColor];
688      }
689      // NOTE(brentvatne): we used to use white as a default background color for window but this caused
690      // problems when using form sheet presentation style with vcs eg: <Modal /> and native-stack. Most
691      // users expect the background behind these to be black, which is the default if backgroundColor is nil.
692      self.view.window.backgroundColor = nil;
693
694      // NOTE(brentvatne): we may want to default to respecting the default system background color
695      // on iOS13 and higher, but if we do make this choice then we will have to implement it on Android
696      // as well. This would also be a breaking change. Leaving this here as a placeholder for the future.
697      // if (@available(iOS 13.0, *)) {
698      //   self.view.backgroundColor = [UIColor systemBackgroundColor];
699      // } else {
700      //  self.view.backgroundColor = [UIColor whiteColor];
701      // }
702    }
703}
704
705- (NSString * _Nullable)_readBackgroundColorFromManifest:(EXManifestsManifest *)manifest
706{
707  return manifest.iosOrRootBackgroundColor;
708}
709
710
711#pragma mark - Internal
712
713- (void)_showErrorWithType:(EXFatalErrorType)type error:(nullable NSError *)error
714{
715  EXAssertMainThread();
716  _dtmLastFatalErrorShown = [NSDate date];
717  if (_errorView && _contentView == _errorView) {
718    // already showing, just update
719    _errorView.type = type;
720    _errorView.error = error;
721  } {
722    [_contentView removeFromSuperview];
723    if (!_errorView) {
724      _errorView = [[EXErrorView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
725      _errorView.delegate = self;
726      _errorView.appRecord = _appRecord;
727    }
728    _errorView.type = type;
729    _errorView.error = error;
730    _contentView = _errorView;
731    [self.view addSubview:_contentView];
732    [[EXAnalytics sharedInstance] logErrorVisibleEvent];
733  }
734}
735
736- (void)setIsLoading:(BOOL)isLoading
737{
738  if ([_appRecord.appManager enablesDeveloperTools] && _dtmLastFatalErrorShown) {
739    if ([_dtmLastFatalErrorShown timeIntervalSinceNow] >= -kEXDevelopmentErrorCoolDownSeconds) {
740      // we just showed a fatal error very recently, do not begin loading.
741      // this can happen in some cases where react native sends the 'started loading' notif
742      // in spite of a packager error.
743      return;
744    }
745  }
746  _isLoading = isLoading;
747  EX_WEAKIFY(self);
748  dispatch_async(dispatch_get_main_queue(), ^{
749    EX_ENSURE_STRONGIFY(self);
750    if (!isLoading) {
751      [self.appLoadingProgressWindowController hide];
752    }
753  });
754}
755
756#pragma mark - error recovery
757
758- (BOOL)_willAutoRecoverFromError:(NSError *)error
759{
760  if (![_appRecord.appManager enablesDeveloperTools]) {
761    BOOL shouldRecover = [[EXKernel sharedInstance].serviceRegistry.errorRecoveryManager experienceShouldReloadOnError:_appRecord.scopeKey];
762    if (shouldRecover) {
763      [self _invalidateRecoveryTimer];
764      _tmrAutoReloadDebounce = [NSTimer scheduledTimerWithTimeInterval:kEXAutoReloadDebounceSeconds
765                                                                target:self
766                                                              selector:@selector(refresh)
767                                                              userInfo:nil
768                                                               repeats:NO];
769    }
770    return shouldRecover;
771  }
772  return NO;
773}
774
775- (void)_invalidateRecoveryTimer
776{
777  if (_tmrAutoReloadDebounce) {
778    [_tmrAutoReloadDebounce invalidate];
779    _tmrAutoReloadDebounce = nil;
780  }
781}
782
783#pragma mark - EXAppLoadingCancelViewDelegate
784
785- (void)appLoadingCancelViewDidCancel:(EXAppLoadingCancelView *)view {
786  if ([EXKernel sharedInstance].browserController) {
787    [[EXKernel sharedInstance].browserController moveHomeToVisible];
788  }
789}
790
791@end
792
793NS_ASSUME_NONNULL_END
794