ssap_app/node_modules/react-native-screens/ios/RNSScreen.mm

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#import <UIKit/UIKit.h>
#import "RNSModalScreen.h"
#import "RNSScreen.h"
#import "RNSScreenContainer.h"
#import "RNSScreenContentWrapper.h"
#import "RNSScreenWindowTraits.h"
#ifdef RCT_NEW_ARCH_ENABLED
#import <React/RCTConversions.h>
#import <React/RCTFabricComponentsPlugins.h>
#import <React/RCTRootComponentView.h>
#import <React/RCTScrollViewComponentView.h>
#import <React/RCTSurfaceTouchHandler.h>
#import <react/renderer/components/rnscreens/EventEmitters.h>
#import <react/renderer/components/rnscreens/Props.h>
#import <react/renderer/components/rnscreens/RCTComponentViewHelpers.h>
#import <rnscreens/RNSScreenComponentDescriptor.h>
#import "RNSConvert.h"
#import "RNSHeaderHeightChangeEvent.h"
#import "RNSScreenViewEvent.h"
#else
#import <React/RCTScrollView.h>
#import <React/RCTTouchHandler.h>
#endif // RCT_NEW_ARCH_ENABLED
#import <React/RCTShadowView.h>
#import <React/RCTUIManager.h>
#import <React/RCTUIManagerUtils.h>
#import "RNSConversions.h"
#import "RNSScreenFooter.h"
#import "RNSScreenStack.h"
#import "RNSScreenStackHeaderConfig.h"
#import "RNSScrollViewHelper.h"
#import "RNSTabBarController.h"
#import "RNSDefines.h"
#import "UIView+RNSUtility.h"
#ifdef RCT_NEW_ARCH_ENABLED
namespace react = facebook::react;
#endif // RCT_NEW_ARCH_ENABLED
constexpr NSInteger SHEET_FIT_TO_CONTENTS = -1;
constexpr NSInteger SHEET_LARGEST_UNDIMMED_DETENT_NONE = -1;
struct ContentWrapperBox {
__weak RNSScreenContentWrapper *contentWrapper{nil};
float contentHeightErrata{0.f};
};
@interface RNSScreenView () <
UIAdaptivePresentationControllerDelegate,
#if !TARGET_OS_TV
UISheetPresentationControllerDelegate,
#endif
#ifdef RCT_NEW_ARCH_ENABLED
RCTRNSScreenViewProtocol,
CAAnimationDelegate>
#else
RCTInvalidating>
#endif
@end
@implementation RNSScreenView {
__weak RNS_REACT_SCROLL_VIEW_COMPONENT *_sheetsScrollView;
/// Up-to-date only when sheet is in `fitToContents` mode.
CGFloat _sheetContentHeight;
ContentWrapperBox _contentWrapperBox;
bool _sheetHasInitialDetentSet;
#ifdef RCT_NEW_ARCH_ENABLED
RCTSurfaceTouchHandler *_touchHandler;
react::RNSScreenShadowNode::ConcreteState::Shared _state;
// on fabric, they are not available by default so we need them exposed here too
NSMutableArray<UIView *> *_reactSubviews;
#else
__weak RCTBridge *_bridge;
RCTTouchHandler *_touchHandler;
CGRect _reactFrame;
#endif
}
#ifdef RCT_NEW_ARCH_ENABLED
// Needed because of this: https://github.com/facebook/react-native/pull/37274
+ (void)load
{
[super load];
}
- (instancetype)initWithFrame:(CGRect)frame
{
if (self = [super initWithFrame:frame]) {
static const auto defaultProps = std::make_shared<const react::RNSScreenProps>();
_props = defaultProps;
_reactSubviews = [NSMutableArray new];
_contentWrapperBox = {};
[self initCommonProps];
}
return self;
}
#else
- (instancetype)initWithBridge:(RCTBridge *)bridge
{
if (self = [super init]) {
_bridge = bridge;
[self initCommonProps];
}
return self;
}
#endif // RCT_NEW_ARCH_ENABLED
- (void)initCommonProps
{
_controller = [[RNSScreen alloc] initWithView:self];
_stackPresentation = RNSScreenStackPresentationPush;
_stackAnimation = RNSScreenStackAnimationDefault;
_gestureEnabled = YES;
_replaceAnimation = RNSScreenReplaceAnimationPop;
_dismissed = NO;
_hasStatusBarStyleSet = NO;
_hasStatusBarAnimationSet = NO;
_hasStatusBarHiddenSet = NO;
_hasOrientationSet = NO;
_hasHomeIndicatorHiddenSet = NO;
_activityState = RNSActivityStateUndefined;
_fullScreenSwipeShadowEnabled = YES;
#if !TARGET_OS_TV
_sheetExpandsWhenScrolledToEdge = YES;
#endif // !TARGET_OS_TV
_sheetsScrollView = nil;
_sheetContentHeight = 0.0;
#ifdef RCT_NEW_ARCH_ENABLED
_markedForUnmountInCurrentTransaction = NO;
#endif // RCT_NEW_ARCH_ENABLED
}
- (UIViewController *)reactViewController
{
return _controller;
}
#ifdef RCT_NEW_ARCH_ENABLED
RNS_IGNORE_SUPER_CALL_BEGIN
- (NSArray<UIView *> *)reactSubviews
{
return _reactSubviews;
}
RNS_IGNORE_SUPER_CALL_END
#endif
- (void)updateBounds
{
#ifdef RCT_NEW_ARCH_ENABLED
if (_state != nullptr) {
RNSScreenStackHeaderConfig *config = [self findHeaderConfig];
// * in large title, ScrollView handles the offset of content so we cannot set it here also
// * TODO: Why is it assumed in comment above, that large title uses scrollview here? What if only SafeAreaView is
// used?
// * When config.translucent == true, we currently use `edgesForExtendedLayout` and the screen is laid out under the
// navigation bar, therefore there is no need to set content offset in shadow tree.
// * When this view is the modal root controller (presented in separate view hierarchy) it does not have navigation
// bar! We send non-zero size to JS, for some reason. TODO: this needs to be investigated.
const CGFloat effectiveContentOffsetY = config.largeTitle || config.translucent || self.isPresentedAsNativeModal
? 0
: [_controller calculateHeaderHeightIsModal:self.isPresentedAsNativeModal];
auto newState = react::RNSScreenState{RCTSizeFromCGSize(self.bounds.size), {0, effectiveContentOffsetY}};
_state->updateState(std::move(newState));
// TODO: Requesting layout on every layout is wrong. We should look for a way to get rid of this.
UINavigationController *navctr = _controller.navigationController;
[navctr.view setNeedsLayout];
}
#else
[_bridge.uiManager setSize:self.bounds.size forView:self];
#endif // RCT_NEW_ARCH_ENABLED
if (_stackPresentation == RNSScreenStackPresentationFormSheet) {
// In case of formSheet stack presentation, to mitigate view flickering
// (see PR with description of this problem: https://github.com/software-mansion/react-native-screens/pull/1870)
// we do not set `bottom: 0` in JS for wrapper of the screen content, causing React to not set
// strict frame every time the sheet size is updated by the code above. This approach leads however to
// situation where (if present) scrollview does not know its view port size resulting in buggy behaviour.
// That's exactly the issue we are handling below. We look for a scroll view down the view hierarchy (only going
// through first subviews, as the OS does something similar e.g. when looking for scrollview for large header
// interaction) and we set its frame to the sheet size. **This is not perfect**, as the content might jump when
// items are added/removed to/from the scroll view, but it's the best we got rn. See
// https://github.com/software-mansion/react-native-screens/pull/1852
// TODO: Consider adding a prop to control whether we want to look for a scroll view here.
// It might be necessary in case someone doesn't want its scroll view to span over whole
// height of the sheet.
[self applyFrameCorrectionForDescendantScrollView];
}
}
- (void)applyFrameCorrectionForDescendantScrollView
{
RNS_REACT_SCROLL_VIEW_COMPONENT *scrollView = [self tryFindDescendantScrollView];
if (_sheetsScrollView != scrollView) {
[_sheetsScrollView removeObserver:self forKeyPath:@"bounds" context:nil];
_sheetsScrollView = scrollView;
// We pass 0 as options, as we are not interested in receiving updated bounds value,
// we are going to overwrite it anyway.
[scrollView addObserver:self forKeyPath:@"bounds" options:0 context:nil];
}
if (scrollView != nil) {
[self correctScrollViewFrame:scrollView withHeader:nil];
}
}
- (void)correctScrollViewFrame:(nonnull RNS_REACT_SCROLL_VIEW_COMPONENT *)scrollViewComponent
withHeader:(nullable UIView *)headerView
{
RNSScreenContentWrapper *_Nullable contentWrapper = _contentWrapperBox.contentWrapper;
if (contentWrapper != nil && [contentWrapper coerceChildScrollViewComponentSizeToSize:self.frame.size]) {
return;
}
// Fallback: legacy behavior
[scrollViewComponent setFrame:self.frame];
}
- (void)observeValueForKeyPath:(NSString *)keyPath
ofObject:(id)object
change:(NSDictionary<NSKeyValueChangeKey, id> *)change
context:(void *)context
{
UIView *scrollView = (UIView *)object;
if (![scrollView isKindOfClass:RNS_REACT_SCROLL_VIEW_COMPONENT.class]) {
return;
}
RNSScreenContentWrapper *_Nullable contentWrapper = _contentWrapperBox.contentWrapper;
if (contentWrapper != nil && [contentWrapper coerceChildScrollViewComponentSizeToSize:self.frame.size]) {
return;
}
// Fallback: legacy behavior
if (!CGRectEqualToRect(scrollView.frame, self.frame)) {
[scrollView setFrame:self.frame];
}
}
- (void)setStackPresentation:(RNSScreenStackPresentation)stackPresentation
{
switch (stackPresentation) {
case RNSScreenStackPresentationModal:
_controller.modalPresentationStyle = UIModalPresentationAutomatic;
#if RNS_IPHONE_OS_VERSION_AVAILABLE(17_0) && !TARGET_OS_TV
if (@available(iOS 18.0, *)) {
UISheetPresentationController *sheetController = _controller.sheetPresentationController;
if (sheetController != nil) {
sheetController.prefersPageSizing = true;
} else {
RCTLogError(
@"[RNScreens] sheetPresentationController is null when attempting to set prefersPageSizing for modal");
}
}
#endif // RNS_IPHONE_OS_VERSION_AVAILABLE(17_0) && !TARGET_OS_TV
break;
case RNSScreenStackPresentationPageSheet:
#if !TARGET_OS_TV
_controller.modalPresentationStyle = UIModalPresentationPageSheet;
#else
_controller.modalPresentationStyle = UIModalPresentationFullScreen;
#endif
break;
case RNSScreenStackPresentationFullScreenModal:
_controller.modalPresentationStyle = UIModalPresentationFullScreen;
break;
#if !TARGET_OS_TV
case RNSScreenStackPresentationFormSheet:
_controller.modalPresentationStyle = UIModalPresentationFormSheet;
break;
#endif
case RNSScreenStackPresentationTransparentModal:
_controller.modalPresentationStyle = UIModalPresentationOverFullScreen;
break;
case RNSScreenStackPresentationContainedModal:
_controller.modalPresentationStyle = UIModalPresentationCurrentContext;
break;
case RNSScreenStackPresentationContainedTransparentModal:
_controller.modalPresentationStyle = UIModalPresentationOverCurrentContext;
break;
case RNSScreenStackPresentationPush:
// ignored, we only need to keep in mind not to set presentation delegate
break;
}
// There is a bug in UIKit which causes retain loop when presentationController is accessed for a
// controller that is not going to be presented modally. We therefore need to avoid setting the
// delegate for screens presented using push. This also means that when controller is updated from
// modal to push type, this may cause memory leak, we warn about that as well.
if (stackPresentation != RNSScreenStackPresentationPush) {
// `modalPresentationStyle` must be set before accessing `presentationController`
// otherwise a default controller will be created and cannot be changed after.
// Documented here:
// https://developer.apple.com/documentation/uikit/uiviewcontroller/1621426-presentationcontroller?language=objc
_controller.presentationController.delegate = self;
} else if (_stackPresentation != RNSScreenStackPresentationPush) {
#ifdef RCT_NEW_ARCH_ENABLED
#else
RCTLogError(
@"Screen presentation updated from modal to push, this may likely result in a screen object leakage. If you need to change presentation style create a new screen object instead");
#endif // RCT_NEW_ARCH_ENABLED
}
_stackPresentation = stackPresentation;
}
- (void)setStackAnimation:(RNSScreenStackAnimation)stackAnimation
{
_stackAnimation = stackAnimation;
switch (stackAnimation) {
case RNSScreenStackAnimationFade:
_controller.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
break;
#if !TARGET_OS_TV
case RNSScreenStackAnimationFlip:
_controller.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
break;
#endif
case RNSScreenStackAnimationNone:
case RNSScreenStackAnimationDefault:
case RNSScreenStackAnimationSimplePush:
case RNSScreenStackAnimationSlideFromBottom:
case RNSScreenStackAnimationFadeFromBottom:
case RNSScreenStackAnimationSlideFromLeft:
// Default
break;
}
}
- (void)setGestureEnabled:(BOOL)gestureEnabled
{
_controller.modalInPresentation = !gestureEnabled;
_gestureEnabled = gestureEnabled;
}
- (void)setReplaceAnimation:(RNSScreenReplaceAnimation)replaceAnimation
{
_replaceAnimation = replaceAnimation;
}
// Nil will be provided when activityState is set as an animated value and we change
// it from JS to be a plain value (non animated).
// In case when nil is received, we want to ignore such value and not make
// any updates as the actual non-nil value will follow immediately.
- (void)setActivityStateOrNil:(NSNumber *)activityStateOrNil
{
int activityState = [activityStateOrNil intValue];
if (activityStateOrNil != nil && activityState != -1 && activityState != _activityState) {
[self maybeAssertActivityStateProgressionOldValue:_activityState newValue:activityState];
_activityState = activityState;
[_reactSuperview markChildUpdated];
}
}
- (void)maybeAssertActivityStateProgressionOldValue:(int)oldValue newValue:(int)newValue
{
if (self.isNativeStackScreen && newValue < oldValue) {
RCTLogError(@"[RNScreens] activityState can only progress in NativeStack");
}
}
/// Note that this method works only after the screen is actually mounted under a screen stack view.
- (BOOL)isNativeStackScreen
{
return [_reactSuperview isKindOfClass:RNSScreenStackView.class];
}
#if !TARGET_OS_TV && !TARGET_OS_VISION
- (void)setStatusBarStyle:(RNSStatusBarStyle)statusBarStyle
{
_hasStatusBarStyleSet = YES;
_statusBarStyle = statusBarStyle;
[RNSScreenWindowTraits assertViewControllerBasedStatusBarAppearenceSet];
[RNSScreenWindowTraits updateStatusBarAppearance];
}
- (void)setStatusBarAnimation:(UIStatusBarAnimation)statusBarAnimation
{
_hasStatusBarAnimationSet = YES;
_statusBarAnimation = statusBarAnimation;
[RNSScreenWindowTraits assertViewControllerBasedStatusBarAppearenceSet];
}
- (void)setStatusBarHidden:(BOOL)statusBarHidden
{
_hasStatusBarHiddenSet = YES;
_statusBarHidden = statusBarHidden;
[RNSScreenWindowTraits assertViewControllerBasedStatusBarAppearenceSet];
[RNSScreenWindowTraits updateStatusBarAppearance];
// As the status bar could change its visibility, we need to calculate header
// height for the correct value in `onHeaderHeightChange` event when navigation
// bar is not visible.
if (self.controller.navigationController.navigationBarHidden && !self.isModal) {
[self.controller calculateAndNotifyHeaderHeightChangeIsModal:NO];
}
}
- (void)setScreenOrientation:(UIInterfaceOrientationMask)screenOrientation
{
_hasOrientationSet = YES;
_screenOrientation = screenOrientation;
[RNSScreenWindowTraits enforceDesiredDeviceOrientation];
}
- (void)setHomeIndicatorHidden:(BOOL)homeIndicatorHidden
{
_hasHomeIndicatorHiddenSet = YES;
_homeIndicatorHidden = homeIndicatorHidden;
[RNSScreenWindowTraits updateHomeIndicatorAutoHidden];
}
#endif
RNS_IGNORE_SUPER_CALL_BEGIN
- (UIView *)reactSuperview
{
return _reactSuperview;
}
RNS_IGNORE_SUPER_CALL_END
- (BOOL)registerContentWrapper:(RNSScreenContentWrapper *)contentWrapper contentHeightErrata:(float)errata;
{
if (self.stackPresentation != RNSScreenStackPresentationFormSheet) {
return NO;
}
_contentWrapperBox = {.contentWrapper = contentWrapper, .contentHeightErrata = errata};
contentWrapper.delegate = self;
[contentWrapper triggerDelegateUpdate];
return YES;
}
/// This is RNSScreenContentWrapperDelegate method, where we do get notified when React did update frame of our child.
- (void)contentWrapper:(RNSScreenContentWrapper *)contentWrapper receivedReactFrame:(CGRect)reactFrame
{
// We want to update and animate allowedDetents for FormSheet only if there was a change
// in frame's height but sometimes we receive a frame with the same dimensions mutliple times.
// In order to prevent visual glitches, we compare new value to the old one and update
// only if there was a change in height.
if (self.stackPresentation != RNSScreenStackPresentationFormSheet || _sheetContentHeight == reactFrame.size.height) {
return;
}
#if !TARGET_OS_TV && !TARGET_OS_VISION && RNS_IPHONE_OS_VERSION_AVAILABLE(16_0)
if (@available(iOS 16.0, *)) {
UISheetPresentationController *sheetController = _controller.sheetPresentationController;
if (sheetController == nil) {
RCTLogError(@"[RNScreens] sheetPresentationController is null when attempting to set allowed detents");
return;
}
if (_sheetAllowedDetents.count > 0 && _sheetAllowedDetents[0].intValue == SHEET_FIT_TO_CONTENTS) {
_sheetContentHeight = reactFrame.size.height;
auto detents = [self detentsFromMaxHeights:@[ [NSNumber numberWithFloat:reactFrame.size.height +
_contentWrapperBox.contentHeightErrata] ]];
[self setAllowedDetentsForSheet:sheetController to:detents animate:YES];
}
}
#endif // Check for iOS >= 16 && !TARGET_OS_TV && !TARGET_OS_VISION
}
- (void)addSubview:(UIView *)view
{
/// This system method is called on Paper only. Fabric uses `-[insertSubview:atIndex:]`.
if ([view isKindOfClass:RNSScreenContentWrapper.class] &&
self.stackPresentation == RNSScreenStackPresentationFormSheet) {
auto contentWrapper = (RNSScreenContentWrapper *)view;
_contentWrapperBox.contentWrapper = contentWrapper;
contentWrapper.delegate = self;
}
if (![view isKindOfClass:[RNSScreenStackHeaderConfig class]]) {
[super addSubview:view];
} else {
((RNSScreenStackHeaderConfig *)view).screenView = self;
}
}
- (void)notifyDismissedWithCount:(int)dismissCount
{
#ifdef RCT_NEW_ARCH_ENABLED
// If screen is already unmounted then there will be no event emitter
if (_eventEmitter != nullptr) {
std::dynamic_pointer_cast<const react::RNSScreenEventEmitter>(_eventEmitter)
->onDismissed(react::RNSScreenEventEmitter::OnDismissed{.dismissCount = dismissCount});
}
#else
// TODO: hopefully problems connected to dismissed prop are only the case on paper
_dismissed = YES;
if (self.onDismissed) {
dispatch_async(dispatch_get_main_queue(), ^{
if (self.onDismissed) {
self.onDismissed(@{@"dismissCount" : @(dismissCount)});
}
});
}
#endif
}
- (void)notifyDismissCancelledWithDismissCount:(int)dismissCount
{
#ifdef RCT_NEW_ARCH_ENABLED
// If screen is already unmounted then there will be no event emitter
if (_eventEmitter != nullptr) {
std::dynamic_pointer_cast<const react::RNSScreenEventEmitter>(_eventEmitter)
->onNativeDismissCancelled(
react::RNSScreenEventEmitter::OnNativeDismissCancelled{.dismissCount = dismissCount});
}
#else
if (self.onNativeDismissCancelled) {
self.onNativeDismissCancelled(@{@"dismissCount" : @(dismissCount)});
}
#endif
}
- (void)notifyWillAppear
{
#ifdef RCT_NEW_ARCH_ENABLED
// If screen is already unmounted then there will be no event emitter
if (_eventEmitter != nullptr) {
std::dynamic_pointer_cast<const react::RNSScreenEventEmitter>(_eventEmitter)
->onWillAppear(react::RNSScreenEventEmitter::OnWillAppear{});
}
[self updateLayoutMetrics:_newLayoutMetrics oldLayoutMetrics:_oldLayoutMetrics];
#else
if (self.onWillAppear) {
self.onWillAppear(nil);
}
// we do it here too because at this moment the `parentViewController` is already not nil,
// so if the parent is not UINavCtr, the frame will be updated to the correct one.
[self reactSetFrame:_reactFrame];
#endif
}
- (void)notifyWillDisappear
{
if (_hideKeyboardOnSwipe) {
[self endEditing:YES];
}
#ifdef RCT_NEW_ARCH_ENABLED
// If screen is already unmounted then there will be no event emitter
if (_eventEmitter != nullptr) {
std::dynamic_pointer_cast<const react::RNSScreenEventEmitter>(_eventEmitter)
->onWillDisappear(react::RNSScreenEventEmitter::OnWillDisappear{});
}
#else
if (self.onWillDisappear) {
self.onWillDisappear(nil);
}
#endif
}
- (void)notifyAppear
{
#ifdef RCT_NEW_ARCH_ENABLED
// If screen is already unmounted then there will be no event emitter
if (_eventEmitter != nullptr) {
std::dynamic_pointer_cast<const react::RNSScreenEventEmitter>(_eventEmitter)
->onAppear(react::RNSScreenEventEmitter::OnAppear{});
}
#else
if (self.onAppear) {
dispatch_async(dispatch_get_main_queue(), ^{
if (self.onAppear) {
self.onAppear(nil);
}
});
}
#endif
}
- (void)notifyDisappear
{
#ifdef RCT_NEW_ARCH_ENABLED
// If screen is already unmounted then there will be no event emitter
if (_eventEmitter != nullptr) {
std::dynamic_pointer_cast<const react::RNSScreenEventEmitter>(_eventEmitter)
->onDisappear(react::RNSScreenEventEmitter::OnDisappear{});
}
#else
if (self.onDisappear) {
self.onDisappear(nil);
}
#endif
}
- (void)notifySheetDetentChangeToIndex:(NSInteger)newDetentIndex isStable:(BOOL)isStable
{
#ifdef RCT_NEW_ARCH_ENABLED
if (_eventEmitter != nullptr) {
int index = newDetentIndex;
std::dynamic_pointer_cast<const react::RNSScreenEventEmitter>(_eventEmitter)
->onSheetDetentChanged(
react::RNSScreenEventEmitter::OnSheetDetentChanged{.index = index, .isStable = isStable});
}
#else
if (self.onSheetDetentChanged) {
self.onSheetDetentChanged(@{
@"index" : @(newDetentIndex),
@"isStable" : @(YES),
});
}
#endif
}
- (void)notifyHeaderHeightChange:(double)headerHeight
{
#ifdef RCT_NEW_ARCH_ENABLED
if (_eventEmitter != nullptr) {
std::dynamic_pointer_cast<const react::RNSScreenEventEmitter>(_eventEmitter)
->onHeaderHeightChange(react::RNSScreenEventEmitter::OnHeaderHeightChange{.headerHeight = headerHeight});
}
RNSHeaderHeightChangeEvent *event =
[[RNSHeaderHeightChangeEvent alloc] initWithEventName:@"onHeaderHeightChange"
reactTag:[NSNumber numberWithInt:self.tag]
headerHeight:headerHeight];
[self postNotificationForEventDispatcherObserversWithEvent:event];
#else
if (self.onHeaderHeightChange) {
self.onHeaderHeightChange(@{
@"headerHeight" : @(headerHeight),
});
}
#endif
}
- (void)notifyGestureCancel
{
#ifdef RCT_NEW_ARCH_ENABLED
if (_eventEmitter != nullptr) {
std::dynamic_pointer_cast<const react::RNSScreenEventEmitter>(_eventEmitter)
->onGestureCancel(react::RNSScreenEventEmitter::OnGestureCancel{});
}
#else
if (self.onGestureCancel) {
self.onGestureCancel(nil);
}
#endif
}
- (BOOL)isMountedUnderScreenOrReactRoot
{
#ifdef RCT_NEW_ARCH_ENABLED
#define RNS_EXPECTED_VIEW RCTRootComponentView
#else
#define RNS_EXPECTED_VIEW RCTRootView
#endif
for (UIView *parent = self.superview; parent != nil; parent = parent.superview) {
if ([parent isKindOfClass:[RNS_EXPECTED_VIEW class]] || [parent isKindOfClass:[RNSScreenView class]]) {
return YES;
}
}
return NO;
#undef RNS_EXPECTED_VIEW
}
- (void)didMoveToWindow
{
// For RN touches to work we need to instantiate and connect RCTTouchHandler. This only applies
// for screens that aren't mounted under RCTRootView e.g., modals that are mounted directly to
// root application window.
if (self.window != nil && ![self isMountedUnderScreenOrReactRoot]) {
if (_touchHandler == nil) {
#ifdef RCT_NEW_ARCH_ENABLED
_touchHandler = [RCTSurfaceTouchHandler new];
#else
_touchHandler = [[RCTTouchHandler alloc] initWithBridge:_bridge];
#endif
}
[_touchHandler attachToView:self];
} else {
[_touchHandler detachFromView:self];
}
}
- (nullable RNS_TOUCH_HANDLER_ARCH_TYPE *)touchHandler
{
if (_touchHandler != nil) {
return _touchHandler;
}
return [self rnscreens_findTouchHandlerInAncestorChain];
}
- (void)notifyFinishTransitioning
{
[_controller notifyFinishTransitioning];
}
- (void)notifyTransitionProgress:(double)progress closing:(BOOL)closing goingForward:(BOOL)goingForward
{
#ifdef RCT_NEW_ARCH_ENABLED
if (_eventEmitter != nullptr) {
std::dynamic_pointer_cast<const react::RNSScreenEventEmitter>(_eventEmitter)
->onTransitionProgress(
react::RNSScreenEventEmitter::OnTransitionProgress{
.progress = progress, .closing = closing ? 1 : 0, .goingForward = goingForward ? 1 : 0});
}
RNSScreenViewEvent *event = [[RNSScreenViewEvent alloc] initWithEventName:@"onTransitionProgress"
reactTag:[NSNumber numberWithInt:self.tag]
progress:progress
closing:closing
goingForward:goingForward];
[self postNotificationForEventDispatcherObserversWithEvent:event];
#else
if (self.onTransitionProgress) {
self.onTransitionProgress(@{
@"progress" : @(progress),
@"closing" : @(closing ? 1 : 0),
@"goingForward" : @(goingForward ? 1 : 0),
});
}
#endif
}
#if !RCT_NEW_ARCH_ENABLED
- (void)presentationControllerWillDismiss:(UIPresentationController *)presentationController
{
// On Paper, we need to call both "cancel" and "reset" here because RN's gesture
// recognizer does not handle the scenario when it gets cancelled by other top
// level gesture recognizer. In this case by the modal dismiss gesture.
// Because of that, at the moment when this method gets called the React's
// gesture recognizer is already in FAILED state but cancel events never gets
// send to JS. Calling "reset" forces RCTTouchHanler to dispatch cancel event.
// To test this behavior one need to open a dismissable modal and start
// pulling down starting at some touchable item. Without "reset" the touchable
// will never go back from highlighted state even when the modal start sliding
// down.
[_touchHandler cancel];
[_touchHandler reset];
}
#endif // !RCT_NEW_ARCH_ENABLED
- (BOOL)presentationControllerShouldDismiss:(UIPresentationController *)presentationController
{
if (_preventNativeDismiss) {
return NO;
}
return _gestureEnabled;
}
- (void)presentationControllerDidAttemptToDismiss:(UIPresentationController *)presentationController
{
// NOTE(kkafar): We should consider depracating the use of gesture cancel here & align
// with usePreventRemove API of react-navigation v7.
[self notifyGestureCancel];
if (_preventNativeDismiss) {
[self notifyDismissCancelledWithDismissCount:1];
}
}
- (void)presentationControllerDidDismiss:(UIPresentationController *)presentationController
{
if ([_reactSuperview respondsToSelector:@selector(presentationControllerDidDismiss:)]) {
[_reactSuperview performSelector:@selector(presentationControllerDidDismiss:) withObject:presentationController];
}
}
- (nullable RNSScreenStackHeaderConfig *)findHeaderConfig
{
// Fast path
if ([self.reactSubviews.lastObject isKindOfClass:RNSScreenStackHeaderConfig.class]) {
return (RNSScreenStackHeaderConfig *)self.reactSubviews.lastObject;
}
for (UIView *view in self.reactSubviews) {
if ([view isKindOfClass:RNSScreenStackHeaderConfig.class]) {
return (RNSScreenStackHeaderConfig *)view;
}
}
return nil;
}
/// Looks for RCTScrollView in direct line - goes through the subviews at index 0 down the view hierarchy.
- (nullable RNS_REACT_SCROLL_VIEW_COMPONENT *)tryFindDescendantScrollView
{
// Step 1: Query registered content wrapper for the scrollview.
RNSScreenContentWrapper *contentWrapper = _contentWrapperBox.contentWrapper;
if (RNS_REACT_SCROLL_VIEW_COMPONENT *_Nullable scrollViewComponent = [contentWrapper childRCTScrollViewComponent];
scrollViewComponent != nil) {
return scrollViewComponent;
}
// Fallback 1: Search through first-subview-path
UIView *firstSubview = self;
while (firstSubview.subviews.count > 0) {
firstSubview = firstSubview.subviews[0];
if ([firstSubview isKindOfClass:RNS_REACT_SCROLL_VIEW_COMPONENT.class]) {
return static_cast<RNS_REACT_SCROLL_VIEW_COMPONENT *>(firstSubview);
}
}
return nil;
}
- (BOOL)isModal
{
return self.stackPresentation != RNSScreenStackPresentationPush;
}
- (BOOL)isPresentedAsNativeModal
{
return self.controller.parentViewController == nil && self.controller.presentingViewController != nil;
}
- (BOOL)isFullscreenModal
{
switch (self.controller.modalPresentationStyle) {
case UIModalPresentationFullScreen:
case UIModalPresentationCurrentContext:
case UIModalPresentationOverCurrentContext:
return YES;
default:
return NO;
}
}
- (BOOL)isTransparentModal
{
return self.controller.modalPresentationStyle == UIModalPresentationOverFullScreen ||
self.controller.modalPresentationStyle == UIModalPresentationOverCurrentContext;
}
- (void)invalidate
{
_controller = nil;
[_sheetsScrollView removeObserver:self forKeyPath:@"bounds" context:nil];
}
#if !TARGET_OS_TV && !TARGET_OS_VISION
- (void)setPropertyForSheet:(UISheetPresentationController *)sheet
withBlock:(void (^)(void))block
animate:(BOOL)animate API_AVAILABLE(ios(15.0))
{
if (animate) {
[sheet animateChanges:block];
} else {
block();
}
}
- (void)setAllowedDetentsForSheet:(UISheetPresentationController *)sheet
to:(NSArray<UISheetPresentationControllerDetent *> *)detents
animate:(BOOL)animate API_AVAILABLE(ios(15.0))
{
[self setPropertyForSheet:sheet
withBlock:^{
sheet.detents = detents;
}
animate:animate];
}
- (void)setSelectedDetentForSheet:(UISheetPresentationController *)sheet
to:(UISheetPresentationControllerDetentIdentifier)detent
animate:(BOOL)animate API_AVAILABLE(ios(15.0))
{
if (sheet.selectedDetentIdentifier != detent) {
[self setPropertyForSheet:sheet
withBlock:^{
sheet.selectedDetentIdentifier = detent;
}
animate:animate];
}
}
- (void)setCornerRadiusForSheet:(UISheetPresentationController *)sheet
to:(CGFloat)radius
animate:(BOOL)animate API_AVAILABLE(ios(15.0))
{
if (sheet.preferredCornerRadius != radius) {
[self setPropertyForSheet:sheet
withBlock:^{
sheet.preferredCornerRadius =
radius < 0 ? UISheetPresentationControllerAutomaticDimension : radius;
}
animate:animate];
}
}
- (void)setGrabberVisibleForSheet:(UISheetPresentationController *)sheet
to:(BOOL)visible
animate:(BOOL)animate API_AVAILABLE(ios(15.0))
{
if (sheet.prefersGrabberVisible != visible) {
[self setPropertyForSheet:sheet
withBlock:^{
sheet.prefersGrabberVisible = visible;
}
animate:animate];
}
}
- (void)setLargestUndimmedDetentForSheet:(UISheetPresentationController *)sheet
to:(UISheetPresentationControllerDetentIdentifier)detent
animate:(BOOL)animate API_AVAILABLE(ios(15.0))
{
if (sheet.largestUndimmedDetentIdentifier != detent) {
[self setPropertyForSheet:sheet
withBlock:^{
sheet.largestUndimmedDetentIdentifier = detent;
}
animate:animate];
}
}
- (NSInteger)detentIndexFromDetentIdentifier:(UISheetPresentationControllerDetentIdentifier)identifier
API_AVAILABLE(ios(15.0))
{
// We first check if we are running on iOS 16+ as the API is different
#if RNS_IPHONE_OS_VERSION_AVAILABLE(16_0)
if (_sheetAllowedDetents.count > 0) {
// We should be running on custom detents in this case, thus identifier should be a stringified number.
return identifier.integerValue;
} else
#endif // iOS 16 check
{
// We're using system defined identifiers.
if (_sheetAllowedDetents.count >= 2 || _sheetAllowedDetents.count == 0) {
if (identifier == UISheetPresentationControllerDetentIdentifierMedium) {
return 0;
} else if (identifier == UISheetPresentationControllerDetentIdentifierLarge) {
return 1;
} else {
RCTLogError(@"[RNScreens] Unexpected detent identifier %@", identifier);
}
} else {
// There is only single option.
return 0;
}
}
return 0;
}
- (void)sheetPresentationControllerDidChangeSelectedDetentIdentifier:
(UISheetPresentationController *)sheetPresentationController API_AVAILABLE(ios(15.0))
{
UISheetPresentationControllerDetentIdentifier ident = sheetPresentationController.selectedDetentIdentifier;
[self notifySheetDetentChangeToIndex:[self detentIndexFromDetentIdentifier:ident] isStable:YES];
}
/**
* Updates settings for sheet presentation controller.
* Note that this method should not be called inside `stackPresentation` setter, because on Paper we don't have
* guarantee that values of all related props had been updated earlier. It should be invoked from `didSetProps`.
* On Fabric we run it from `finalizeUpdates` if props have changed.
*/
- (void)updateFormSheetPresentationStyle
{
if (_stackPresentation != RNSScreenStackPresentationFormSheet) {
return;
}
int firstDimmedDetentIndex = _sheetAllowedDetents.count;
// Whether we use system (iOS 15) detents or custom (iOS 16+).
// Custom detents are in use if we are on iOS 16+ and we have at least single detent
// defined in the detents array. In any other case we do use system defined detents.
bool systemDetentsInUse = false;
if (@available(iOS 15.0, *)) {
UISheetPresentationController *sheet = _controller.sheetPresentationController;
if (sheet == nil) {
return;
}
sheet.delegate = self;
#if RNS_IPHONE_OS_VERSION_AVAILABLE(16_0)
if (@available(iOS 16.0, *)) {
if (_sheetAllowedDetents.count > 0) {
if (_sheetAllowedDetents.count == 1 && [_sheetAllowedDetents[0] integerValue] == SHEET_FIT_TO_CONTENTS) {
// This is `fitToContents` case, where sheet should be just high to display its contents.
// Paper: we do not set anything here, we will set once React computed layout of our React's children, namely
// RNSScreenContentWrapper, which in case of formSheet presentation style does have exactly the same frame as
// actual content. The update will be triggered once our child is mounted and laid out by React.
// Fabric: no nested stack: in this very moment our children are already mounted & laid out. In the very end
// of this method, after all other configuration is applied we trigger content wrapper to send us update on
// its frame. Fabric: nested stack: we wait until nested content wrapper registers itself with this view and
// then update the dimensions.
} else {
[self setAllowedDetentsForSheet:sheet
to:[self detentsFromMaxHeightFractions:_sheetAllowedDetents]
animate:NO];
}
}
} else
#endif // Check for iOS >= 16
{
systemDetentsInUse = true;
if (_sheetAllowedDetents.count == 0) {
[self setAllowedDetentsForSheet:sheet
to:@[
UISheetPresentationControllerDetent.mediumDetent,
UISheetPresentationControllerDetent.largeDetent
]
animate:YES];
} else if (_sheetAllowedDetents.count >= 2) {
float firstDetentFraction = _sheetAllowedDetents[0].floatValue;
float secondDetentFraction = _sheetAllowedDetents[1].floatValue;
firstDimmedDetentIndex = 2;
if (firstDetentFraction < secondDetentFraction) {
[self setAllowedDetentsForSheet:sheet
to:@[
UISheetPresentationControllerDetent.mediumDetent,
UISheetPresentationControllerDetent.largeDetent
]
animate:YES];
} else {
RCTLogError(@"[RNScreens] The values in sheetAllowedDetents array must be sorted");
}
} else {
float firstDetentFraction = _sheetAllowedDetents[0].floatValue;
if (firstDetentFraction == SHEET_FIT_TO_CONTENTS) {
RCTLogError(@"[RNScreens] Unsupported on iOS versions below 16");
} else if (firstDetentFraction < 1.0) {
[self setAllowedDetentsForSheet:sheet to:@[ UISheetPresentationControllerDetent.mediumDetent ] animate:YES];
[self setSelectedDetentForSheet:sheet to:UISheetPresentationControllerDetentIdentifierMedium animate:YES];
} else {
[self setAllowedDetentsForSheet:sheet to:@[ UISheetPresentationControllerDetent.largeDetent ] animate:YES];
[self setSelectedDetentForSheet:sheet to:UISheetPresentationControllerDetentIdentifierLarge animate:YES];
}
}
}
// Handle initial detent on the first update.
if (!_sheetHasInitialDetentSet) {
if (_sheetInitialDetent > 0 && _sheetInitialDetent < _sheetAllowedDetents.count) {
#if RNS_IPHONE_OS_VERSION_AVAILABLE(16_0)
if (@available(iOS 16.0, *)) {
UISheetPresentationControllerDetent *detent = sheet.detents[_sheetInitialDetent];
[self setSelectedDetentForSheet:sheet to:detent.identifier animate:YES];
} else
#endif // Check for iOS >= 16
{
if (_sheetInitialDetent < 2) {
[self setSelectedDetentForSheet:sheet to:UISheetPresentationControllerDetentIdentifierLarge animate:YES];
} else {
RCTLogError(
@"[RNScreens] sheetInitialDetent out of bounds, on iOS versions below 16 sheetAllowedDetents is ignored in favor of an array of two system-defined detents");
}
}
} else if (_sheetInitialDetent != 0) {
RCTLogError(@"[RNScreens] sheetInitialDetent out of bounds for sheetAllowedDetents array");
}
_sheetHasInitialDetentSet = true;
}
sheet.prefersScrollingExpandsWhenScrolledToEdge = _sheetExpandsWhenScrolledToEdge;
[self setGrabberVisibleForSheet:sheet to:_sheetGrabberVisible animate:YES];
[self setCornerRadiusForSheet:sheet to:_sheetCornerRadius animate:YES];
// lud - largest undimmed detent
// First we try to take value from the prop or default.
int ludIndex = _sheetLargestUndimmedDetent != nil ? _sheetLargestUndimmedDetent.intValue : -1;
// Rationalize the value in case the user set something that did not make sense.
ludIndex = ludIndex >= firstDimmedDetentIndex ? firstDimmedDetentIndex - 1 : ludIndex;
if (ludIndex == SHEET_LARGEST_UNDIMMED_DETENT_NONE) {
[self setLargestUndimmedDetentForSheet:sheet to:nil animate:YES];
} else if (ludIndex >= 0) {
if (systemDetentsInUse) {
// We're on iOS 15 or do not have custom detents specified by the user.
if (firstDimmedDetentIndex == 0 || (firstDimmedDetentIndex == 1 && _sheetAllowedDetents[0].floatValue < 1.0)) {
// There are no detents specified or there is exactly one & it is less than 1.0 we default to medium.
[self setLargestUndimmedDetentForSheet:sheet
to:UISheetPresentationControllerDetentIdentifierMedium
animate:YES];
} else {
[self setLargestUndimmedDetentForSheet:sheet
to:UISheetPresentationControllerDetentIdentifierLarge
animate:YES];
}
} else {
// We're on iOS 16+ & have custom detents.
[self setLargestUndimmedDetentForSheet:sheet to:[NSNumber numberWithInt:ludIndex].stringValue animate:YES];
}
} else {
RCTLogError(@"[RNScreens] Value of sheetLargestUndimmedDetent prop must be >= -1");
}
}
#ifdef RCT_NEW_ARCH_ENABLED
// We trigger update from content wrapper, because on Fabric we update props after the children are mounted & laid
// out.
[self->_contentWrapperBox.contentWrapper triggerDelegateUpdate];
#endif // RCT_NEW_ARCH_ENABLED
}
#if RNS_IPHONE_OS_VERSION_AVAILABLE(16_0)
/**
* Creates array of detent objects based on provided `values` & `resolver`. Since we need to name the detents to be able
* to later refer to them, this method names the detents by stringifying their indices, e.g. detent on index 2 will be
* named "2".
*/
- (NSArray<UISheetPresentationControllerDetent *> *)
detentsFromValues:(NSArray<NSNumber *> *)values
withResolver:(CGFloat (^)(id<UISheetPresentationControllerDetentResolutionContext>, NSNumber *))resolver
API_AVAILABLE(ios(16.0))
{
NSMutableArray<UISheetPresentationControllerDetent *> *customDetents =
[NSMutableArray arrayWithCapacity:values.count];
[values enumerateObjectsUsingBlock:^(NSNumber *value, NSUInteger index, BOOL *stop) {
UISheetPresentationControllerDetentIdentifier ident = [[NSNumber numberWithInt:index] stringValue];
[customDetents addObject:[UISheetPresentationControllerDetent
customDetentWithIdentifier:ident
resolver:^CGFloat(
id<UISheetPresentationControllerDetentResolutionContext> ctx) {
return resolver(ctx, value);
}]];
}];
return customDetents;
}
- (NSArray<UISheetPresentationControllerDetent *> *)detentsFromMaxHeightFractions:(NSArray<NSNumber *> *)fractions
API_AVAILABLE(ios(16.0))
{
return [self
detentsFromValues:fractions
withResolver:^CGFloat(id<UISheetPresentationControllerDetentResolutionContext> ctx, NSNumber *fraction) {
return MIN(ctx.maximumDetentValue, ctx.maximumDetentValue * fraction.floatValue);
}];
}
- (NSArray<UISheetPresentationControllerDetent *> *)detentsFromMaxHeights:(NSArray<NSNumber *> *)maxHeights
API_AVAILABLE(ios(16.0))
{
return
[self detentsFromValues:maxHeights
withResolver:^CGFloat(id<UISheetPresentationControllerDetentResolutionContext> ctx, NSNumber *height) {
return MIN(ctx.maximumDetentValue, height.floatValue);
}];
}
#endif // Check for iOS >= 16
#endif // !TARGET_OS_TV && !TARGET_OS_VISION
#pragma mark - RNSScrollViewBehaviorOverriding
- (BOOL)shouldOverrideScrollViewContentInsetAdjustmentBehavior
{
// RNSScreenView does not have a property to control this behavior.
// It looks for parent that conforms to RNSScrollViewBehaviorOverriding to determine
// if it should override ScrollView's behavior.
// As this method is called when RNSScreen willMoveToParentViewController
// and view does not have superView yet, we need to use reactSuperViews.
UIView *parent = [self reactSuperview];
while (parent != nil) {
if ([parent respondsToSelector:@selector(shouldOverrideScrollViewContentInsetAdjustmentBehavior)]) {
id<RNSScrollViewBehaviorOverriding> overrideProvider = static_cast<id<RNSScrollViewBehaviorOverriding>>(parent);
return [overrideProvider shouldOverrideScrollViewContentInsetAdjustmentBehavior];
}
parent = [parent reactSuperview];
}
return NO;
}
- (void)overrideScrollViewBehaviorInFirstDescendantChainIfNeeded
{
if ([self shouldOverrideScrollViewContentInsetAdjustmentBehavior]) {
[RNSScrollViewHelper overrideScrollViewBehaviorInFirstDescendantChainFrom:self];
}
}
#pragma mark - Fabric specific
#ifdef RCT_NEW_ARCH_ENABLED
- (void)postNotificationForEventDispatcherObserversWithEvent:(NSObject<RCTEvent> *)event
{
NSDictionary *userInfo = [NSDictionary dictionaryWithObjectsAndKeys:event, @"event", nil];
[[NSNotificationCenter defaultCenter] postNotificationName:@"RCTNotifyEventDispatcherObserversOfEvent_DEPRECATED"
object:nil
userInfo:userInfo];
}
- (BOOL)hasHeaderConfig
{
return _config != nil;
}
- (void)willBeUnmountedInUpcomingTransaction
{
_markedForUnmountInCurrentTransaction = YES;
}
+ (react::ComponentDescriptorProvider)componentDescriptorProvider
{
return react::concreteComponentDescriptorProvider<react::RNSScreenComponentDescriptor>();
}
+ (BOOL)shouldBeRecycled
{
return NO;
}
- (void)mountChildComponentView:(UIView<RCTComponentViewProtocol> *)childComponentView index:(NSInteger)index
{
if ([childComponentView isKindOfClass:RNSScreenContentWrapper.class]) {
auto contentWrapper = (RNSScreenContentWrapper *)childComponentView;
contentWrapper.delegate = self;
_contentWrapperBox.contentWrapper = contentWrapper;
} else if ([childComponentView isKindOfClass:RNSScreenStackHeaderConfig.class]) {
_config = (RNSScreenStackHeaderConfig *)childComponentView;
_config.screenView = self;
}
[_reactSubviews insertObject:childComponentView atIndex:index];
[super mountChildComponentView:childComponentView index:index];
}
- (void)unmountChildComponentView:(UIView<RCTComponentViewProtocol> *)childComponentView index:(NSInteger)index
{
if ([childComponentView isKindOfClass:[RNSScreenStackHeaderConfig class]]) {
_config = nil;
}
if ([childComponentView isKindOfClass:[RNSScreenContentWrapper class]]) {
_contentWrapperBox.contentWrapper.delegate = nil;
_contentWrapperBox.contentWrapper = nil;
}
[_reactSubviews removeObject:childComponentView];
[super unmountChildComponentView:childComponentView index:index];
}
#pragma mark - RCTComponentViewProtocol
- (void)updateProps:(react::Props::Shared const &)props oldProps:(react::Props::Shared const &)oldProps
{
const auto &oldScreenProps = *std::static_pointer_cast<const react::RNSScreenProps>(_props);
const auto &newScreenProps = *std::static_pointer_cast<const react::RNSScreenProps>(props);
[self setFullScreenSwipeEnabled:newScreenProps.fullScreenSwipeEnabled];
[self setFullScreenSwipeShadowEnabled:newScreenProps.fullScreenSwipeShadowEnabled];
[self setGestureEnabled:newScreenProps.gestureEnabled];
[self setTransitionDuration:[NSNumber numberWithInt:newScreenProps.transitionDuration]];
[self setHideKeyboardOnSwipe:newScreenProps.hideKeyboardOnSwipe];
[self setCustomAnimationOnSwipe:newScreenProps.customAnimationOnSwipe];
[self
setGestureResponseDistance:[RNSConvert
gestureResponseDistanceDictFromCppStruct:newScreenProps.gestureResponseDistance]];
[self setPreventNativeDismiss:newScreenProps.preventNativeDismiss];
[self setActivityStateOrNil:[NSNumber numberWithFloat:newScreenProps.activityState]];
[self setSwipeDirection:[RNSConvert RNSScreenSwipeDirectionFromCppEquivalent:newScreenProps.swipeDirection]];
#if !TARGET_OS_TV
if (newScreenProps.statusBarHidden != oldScreenProps.statusBarHidden) {
[self setStatusBarHidden:newScreenProps.statusBarHidden];
}
if (newScreenProps.statusBarStyle != oldScreenProps.statusBarStyle) {
[self setStatusBarStyle:[RCTConvert
RNSStatusBarStyle:RCTNSStringFromStringNilIfEmpty(newScreenProps.statusBarStyle)]];
}
if (newScreenProps.statusBarAnimation != oldScreenProps.statusBarAnimation) {
[self setStatusBarAnimation:[RCTConvert UIStatusBarAnimation:RCTNSStringFromStringNilIfEmpty(
newScreenProps.statusBarAnimation)]];
}
if (newScreenProps.screenOrientation != oldScreenProps.screenOrientation) {
[self setScreenOrientation:[RCTConvert UIInterfaceOrientationMask:RCTNSStringFromStringNilIfEmpty(
newScreenProps.screenOrientation)]];
}
if (newScreenProps.homeIndicatorHidden != oldScreenProps.homeIndicatorHidden) {
[self setHomeIndicatorHidden:newScreenProps.homeIndicatorHidden];
}
[self setSheetGrabberVisible:newScreenProps.sheetGrabberVisible];
[self setSheetCornerRadius:newScreenProps.sheetCornerRadius];
[self setSheetExpandsWhenScrolledToEdge:newScreenProps.sheetExpandsWhenScrolledToEdge];
if (newScreenProps.sheetAllowedDetents != oldScreenProps.sheetAllowedDetents) {
[self setSheetAllowedDetents:[RNSConvert detentFractionsArrayFromVector:newScreenProps.sheetAllowedDetents]];
}
if (newScreenProps.sheetInitialDetent != oldScreenProps.sheetInitialDetent) {
[self setSheetInitialDetent:newScreenProps.sheetInitialDetent];
}
if (newScreenProps.sheetLargestUndimmedDetent != oldScreenProps.sheetLargestUndimmedDetent) {
[self setSheetLargestUndimmedDetent:[NSNumber numberWithInt:newScreenProps.sheetLargestUndimmedDetent]];
}
#endif // !TARGET_OS_TV
if (newScreenProps.stackPresentation != oldScreenProps.stackPresentation) {
[self
setStackPresentation:[RNSConvert RNSScreenStackPresentationFromCppEquivalent:newScreenProps.stackPresentation]];
}
if (newScreenProps.stackAnimation != oldScreenProps.stackAnimation) {
[self setStackAnimation:[RNSConvert RNSScreenStackAnimationFromCppEquivalent:newScreenProps.stackAnimation]];
}
if (newScreenProps.replaceAnimation != oldScreenProps.replaceAnimation) {
[self setReplaceAnimation:[RNSConvert RNSScreenReplaceAnimationFromCppEquivalent:newScreenProps.replaceAnimation]];
}
if (newScreenProps.screenId != oldScreenProps.screenId) {
[self setScreenId:RCTNSStringFromStringNilIfEmpty(newScreenProps.screenId)];
}
[super updateProps:props oldProps:oldProps];
}
- (void)updateState:(react::State::Shared const &)state oldState:(react::State::Shared const &)oldState
{
_state = std::static_pointer_cast<const react::RNSScreenShadowNode::ConcreteState>(state);
}
- (void)updateLayoutMetrics:(const react::LayoutMetrics &)layoutMetrics
oldLayoutMetrics:(const react::LayoutMetrics &)oldLayoutMetrics
{
_newLayoutMetrics = layoutMetrics;
_oldLayoutMetrics = oldLayoutMetrics;
UIViewController *parentVC = self.reactViewController.parentViewController;
if (parentVC == nil || ![parentVC isKindOfClass:[RNSNavigationController class]]) {
[super updateLayoutMetrics:layoutMetrics oldLayoutMetrics:oldLayoutMetrics];
}
// when screen is mounted under RNSNavigationController it's size is controller
// by the navigation controller itself. That is, it is set to fill space of
// the controller. In that case we ignore react layout system from managing
// the screen dimensions and we wait for the screen VC to update and then we
// pass the dimensions to ui view manager to take into account when laying out
// subviews
// Explanation taken from `reactSetFrame`, which is old arch equivalent of this code.
}
- (void)finalizeUpdates:(RNComponentViewUpdateMask)updateMask
{
[super finalizeUpdates:updateMask];
#if !TARGET_OS_TV && !TARGET_OS_VISION
if (updateMask & RNComponentViewUpdateMaskProps) {
[self updateFormSheetPresentationStyle];
}
#endif // !TARGET_OS_TV && !TARGET_OS_VISION
}
#pragma mark - Paper specific
#else
// On Fabric the setter is not needed, because value invariant (empty string to nil translation)
// is upheld in `- [updateProps:oldProps:]`
- (void)setScreenId:(NSString *)screenId
{
if (screenId != nil && screenId.length == 0) {
_screenId = nil;
} else {
_screenId = screenId;
}
}
- (void)didSetProps:(NSArray<NSString *> *)changedProps
{
[super didSetProps:changedProps];
#if !TARGET_OS_TV && !TARGET_OS_VISION
if (self.stackPresentation == RNSScreenStackPresentationFormSheet) {
[self updateFormSheetPresentationStyle];
}
#endif // !TARGET_OS_TV
}
- (void)setPointerEvents:(RCTPointerEvents)pointerEvents
{
// pointer events settings are managed by the parent screen container, we ignore
// any attempt of setting that via React props
}
- (void)reactSetFrame:(CGRect)frame
{
_reactFrame = frame;
UIViewController *parentVC = self.reactViewController.parentViewController;
if (parentVC != nil && ![parentVC isKindOfClass:[RNSNavigationController class]]) {
[super reactSetFrame:frame];
}
// when screen is mounted under RNSNavigationController it's size is controller
// by the navigation controller itself. That is, it is set to fill space of
// the controller. In that case we ignore react layout system from managing
// the screen dimensions and we wait for the screen VC to update and then we
// pass the dimensions to ui view manager to take into account when laying out
// subviews
}
#endif
@end
#ifdef RCT_NEW_ARCH_ENABLED
Class<RCTComponentViewProtocol> RNSScreenCls(void)
{
return RNSScreenView.class;
}
#endif
#pragma mark - RNSScreen
@implementation RNSScreen {
__weak id _previousFirstResponder;
CGRect _lastViewFrame;
RNSScreenView *_initialView;
UIView *_fakeView;
CADisplayLink *_animationTimer;
CGFloat _currentAlpha;
BOOL _closing;
BOOL _goingForward;
int _dismissCount;
BOOL _isSwiping;
BOOL _shouldNotify;
}
#pragma mark - Common
- (instancetype)initWithView:(UIView *)view
{
if (self = [super init]) {
self.view = view;
_fakeView = [UIView new];
_shouldNotify = YES;
#ifdef RCT_NEW_ARCH_ENABLED
_initialView = (RNSScreenView *)view;
#endif
}
return self;
}
// TODO: Find out why this is executed when screen is going out
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
if (!_isSwiping) {
[self.screenView notifyWillAppear];
if (self.transitionCoordinator.isInteractive) {
// we started dismissing with swipe gesture
_isSwiping = YES;
}
} else {
// this event is also triggered if we cancelled the swipe.
// The _isSwiping is still true, but we don't want to notify then
_shouldNotify = NO;
}
[self hideHeaderIfNecessary];
// as per documentation of these methods
_goingForward = [self isBeingPresented] || [self isMovingToParentViewController];
[RNSScreenWindowTraits updateWindowTraits];
if (_shouldNotify) {
_closing = NO;
[self notifyTransitionProgress:0.0 closing:_closing goingForward:_goingForward];
[self setupProgressNotification];
}
}
- (void)viewWillDisappear:(BOOL)animated
{
[super viewWillDisappear:animated];
// self.navigationController might be null when we are dismissing a modal
if (!self.transitionCoordinator.isInteractive && self.navigationController != nil) {
// user might have long pressed ios 14 back button item,
// so he can go back more than one screen and we need to dismiss more screens in JS stack then.
// We check it by calculating the difference between the index of currently displayed screen
// and the index of the target screen, which is the view of topViewController at this point.
// If the value is lower than 1, it means we are dismissing a modal, or navigating forward, or going back with JS.
int selfIndex = [self getIndexOfView:self.screenView];
int targetIndex = [self getIndexOfView:self.navigationController.topViewController.view];
_dismissCount = selfIndex - targetIndex > 0 ? selfIndex - targetIndex : 1;
} else {
_dismissCount = 1;
}
// same flow as in viewWillAppear
if (!_isSwiping) {
[self.screenView notifyWillDisappear];
if (self.transitionCoordinator.isInteractive) {
_isSwiping = YES;
}
} else {
_shouldNotify = NO;
}
// as per documentation of these methods
_goingForward = !([self isBeingDismissed] || [self isMovingFromParentViewController]);
if (_shouldNotify) {
_closing = YES;
[self notifyTransitionProgress:0.0 closing:_closing goingForward:_goingForward];
[self setupProgressNotification];
}
}
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
if (!_isSwiping || _shouldNotify) {
// we are going forward or dismissing without swipe
// or successfully swiped back
[self.screenView notifyAppear];
[self notifyTransitionProgress:1.0 closing:NO goingForward:_goingForward];
} else {
[self.screenView notifyGestureCancel];
}
_isSwiping = NO;
_shouldNotify = YES;
}
- (void)viewDidDisappear:(BOOL)animated
{
[super viewDidDisappear:animated];
if (self.parentViewController == nil && self.presentingViewController == nil) {
if (self.screenView.preventNativeDismiss) {
// if we want to prevent the native dismiss, we do not send dismissal event,
// but instead call `updateContainer`, which restores the JS navigation stack
[self.screenView.reactSuperview updateContainer];
[self.screenView notifyDismissCancelledWithDismissCount:_dismissCount];
} else {
// screen dismissed, send event
[self.screenView notifyDismissedWithCount:_dismissCount];
}
}
// same flow as in viewDidAppear
if (!_isSwiping || _shouldNotify) {
[self.screenView notifyDisappear];
[self notifyTransitionProgress:1.0 closing:YES goingForward:_goingForward];
}
_isSwiping = NO;
_shouldNotify = YES;
#ifdef RCT_NEW_ARCH_ENABLED
#else
[self traverseForScrollView:self.screenView];
#endif
}
- (void)viewDidLayoutSubviews
{
[super viewDidLayoutSubviews];
// The below code makes the screen view adapt dimensions provided by the system. We take these
// into account only when the view is mounted under RNSNavigationController in which case system
// provides additional padding to account for possible header, and in the case when screen is
// shown as a native modal, as the final dimensions of the modal on iOS 12+ are shorter than the
// screen size
BOOL isDisplayedWithinUINavController = [self.parentViewController isKindOfClass:[RNSNavigationController class]];
BOOL isTabScreen = [self.parentViewController isKindOfClass:RNSTabBarController.class];
// Calculate header height on modal open
if (self.screenView.isPresentedAsNativeModal) {
[self calculateAndNotifyHeaderHeightChangeIsModal:YES];
}
if (isDisplayedWithinUINavController || isTabScreen || self.screenView.isPresentedAsNativeModal) {
#ifdef RCT_NEW_ARCH_ENABLED
[self.screenView updateBounds];
#else
if (!CGRectEqualToRect(_lastViewFrame, self.screenView.frame)) {
_lastViewFrame = self.screenView.frame;
[((RNSScreenView *)self.viewIfLoaded) updateBounds];
}
#endif
}
}
- (BOOL)isModalWithHeader
{
return self.screenView.isModal && self.childViewControllers.count == 1 &&
[self.childViewControllers[0] isKindOfClass:UINavigationController.class];
}
// Checks whether this screen has any child view controllers of type RNSNavigationController.
// Useful for checking if this screen has nested stack or is displayed at the top.
- (BOOL)hasNestedStack
{
for (UIViewController *vc in self.childViewControllers) {
if ([vc isKindOfClass:[RNSNavigationController class]]) {
return YES;
}
}
return NO;
}
- (CGSize)getStatusBarHeightIsModal:(BOOL)isModal
{
#if !TARGET_OS_TV && !TARGET_OS_VISION
CGSize fallbackStatusBarSize = [[UIApplication sharedApplication] statusBarFrame].size;
CGSize primaryStatusBarSize = self.view.window.windowScene.statusBarManager.statusBarFrame.size;
if (primaryStatusBarSize.height == 0 || primaryStatusBarSize.width == 0) {
return fallbackStatusBarSize;
}
return primaryStatusBarSize;
#else
// TVOS does not have status bar.
return CGSizeMake(0, 0);
#endif // !TARGET_OS_TV
}
- (UINavigationController *)getVisibleNavigationControllerIsModal:(BOOL)isModal
{
UINavigationController *navctr = self.navigationController;
if (isModal) {
// In case where screen is a modal, we want to calculate childViewController's
// navigation bar height instead of the navigation controller from RNSScreen.
if (self.isModalWithHeader) {
navctr = self.childViewControllers[0];
} else {
// If the modal does not meet requirements (there's no RNSNavigationController which means that probably it
// doesn't have header or there are more than one RNSNavigationController which is invalid) we don't want to
// return anything.
return nil;
}
}
return navctr;
}
- (CGFloat)calculateHeaderHeightIsModal:(BOOL)isModal
{
UINavigationController *navctr = [self getVisibleNavigationControllerIsModal:isModal];
// If there's no navigation controller for the modal (or the navigation bar is hidden), we simply don't want to
// return header height, as modal possibly does not have header when navigation controller is nil,
// and we don't want to count status bar if navigation bar is hidden (inset could be negative).
if (navctr == nil || navctr.isNavigationBarHidden) {
return 0;
}
CGFloat navbarHeight = navctr.navigationBar.frame.size.height;
#if !TARGET_OS_TV
CGFloat navbarInset = navctr.navigationBar.frame.origin.y;
#else
// On TVOS there's no inset of navigation bar.
CGFloat navbarInset = 0;
#endif // !TARGET_OS_TV
return navbarHeight + navbarInset;
}
- (void)calculateAndNotifyHeaderHeightChangeIsModal:(BOOL)isModal
{
CGFloat totalHeight = [self calculateHeaderHeightIsModal:isModal];
[self.screenView notifyHeaderHeightChange:totalHeight];
}
- (void)notifyFinishTransitioning
{
[_previousFirstResponder becomeFirstResponder];
_previousFirstResponder = nil;
// the correct Screen for appearance is set after the transition, same for orientation.
[RNSScreenWindowTraits updateWindowTraits];
}
- (void)willMoveToParentViewController:(UIViewController *)parent
{
[super willMoveToParentViewController:parent];
if (parent == nil) {
id responder = [self findFirstResponder:self.screenView];
if (responder != nil) {
_previousFirstResponder = responder;
}
} else {
[self.screenView overrideScrollViewBehaviorInFirstDescendantChainIfNeeded];
}
}
- (id)findFirstResponder:(UIView *)parent
{
if (parent.isFirstResponder) {
return parent;
}
for (UIView *subView in parent.subviews) {
id responder = [self findFirstResponder:subView];
if (responder != nil) {
return responder;
}
}
return nil;
}
#pragma mark - transition progress related methods
- (void)setupProgressNotification
{
if (self.transitionCoordinator != nil) {
_fakeView.alpha = 0.0;
[self.transitionCoordinator
animateAlongsideTransition:^(id<UIViewControllerTransitionCoordinatorContext> _Nonnull context) {
[[context containerView] addSubview:self->_fakeView];
self->_fakeView.alpha = 1.0;
self->_animationTimer = [CADisplayLink displayLinkWithTarget:self selector:@selector(handleAnimation)];
[self->_animationTimer addToRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
}
completion:^(id<UIViewControllerTransitionCoordinatorContext> _Nonnull context) {
[self->_animationTimer setPaused:YES];
[self->_animationTimer invalidate];
[self->_fakeView removeFromSuperview];
}];
}
}
- (void)handleAnimation
{
if ([[_fakeView layer] presentationLayer] != nil) {
CGFloat fakeViewAlpha = _fakeView.layer.presentationLayer.opacity;
if (_currentAlpha != fakeViewAlpha) {
_currentAlpha = fmax(0.0, fmin(1.0, fakeViewAlpha));
[self notifyTransitionProgress:_currentAlpha closing:_closing goingForward:_goingForward];
}
}
}
- (void)notifyTransitionProgress:(double)progress closing:(BOOL)closing goingForward:(BOOL)goingForward
{
if ([self.view isKindOfClass:[RNSScreenView class]]) {
// if the view is already snapshot, there is not sense in sending progress since on JS side
// the component is already not present
[(RNSScreenView *)self.view notifyTransitionProgress:progress closing:closing goingForward:goingForward];
}
}
#if !TARGET_OS_TV
// if the returned vc is a child, it means that it can provide config;
// if the returned vc is self, it means that there is no child for config and self has config to provide,
// so we return self which results in asking self for preferredStatusBarStyle/Animation etc.;
// if the returned vc is nil, it means none of children could provide config and self does not have config either,
// so if it was asked by parent, it will fallback to parent's option, or use default option if it is the top Screen
- (UIViewController *)findChildVCForConfigAndTrait:(RNSWindowTrait)trait includingModals:(BOOL)includingModals
{
UIViewController *lastViewController = [[self childViewControllers] lastObject];
if ([self.presentedViewController isKindOfClass:[RNSScreen class]]) {
lastViewController = self.presentedViewController;
if (!includingModals) {
return nil;
}
// we don't want to allow controlling of status bar appearance when we present non-fullScreen modal
// and it is not possible if `modalPresentationCapturesStatusBarAppearance` is not set to YES, so even
// if we went into a modal here and ask it, it wouldn't take any effect. For fullScreen modals, the system
// asks them by itself, so we can stop traversing here.
// for screen orientation, we need to start the search again from that modal
UIViewController *modalOrChild = [(RNSScreen *)lastViewController findChildVCForConfigAndTrait:trait
includingModals:includingModals];
if (modalOrChild != nil) {
return modalOrChild;
}
// if searched VC was not found, we don't want to search for configs of child VCs any longer,
// and we don't want to rely on lastViewController.
// That's because the modal did not find a child VC that has an orientation set,
// and it doesn't itself have an orientation set. Hence, we fallback to the standard behavior.
// Please keep in mind that this behavior might be wrong and could lead to undiscovered bugs.
// For more information, see https://github.com/software-mansion/react-native-screens/pull/2008.
}
UIViewController *selfOrNil = [self hasTraitSet:trait] ? self : nil;
if (lastViewController == nil) {
return selfOrNil;
} else {
if ([lastViewController conformsToProtocol:@protocol(RNSViewControllerDelegate)]) {
// If there is a child (should be VC of ScreenContainer or ScreenStack), that has a child that could provide the
// trait, we recursively go into its findChildVCForConfig, and if one of the children has the trait set, we return
// it, otherwise we return self if this VC has config, and nil if it doesn't we use
// `childViewControllerForStatusBarStyle` for all options since the behavior is the same for all of them
UIViewController *childScreen = [lastViewController childViewControllerForStatusBarStyle];
if ([childScreen isKindOfClass:[RNSScreen class]]) {
return [(RNSScreen *)childScreen findChildVCForConfigAndTrait:trait includingModals:includingModals]
?: selfOrNil;
} else {
return selfOrNil;
}
} else {
// child vc is not from this library, so we don't ask it
return selfOrNil;
}
}
}
- (BOOL)hasTraitSet:(RNSWindowTrait)trait
{
switch (trait) {
case RNSWindowTraitStyle: {
return self.screenView.hasStatusBarStyleSet;
}
case RNSWindowTraitAnimation: {
return self.screenView.hasStatusBarAnimationSet;
}
case RNSWindowTraitHidden: {
return self.screenView.hasStatusBarHiddenSet;
}
case RNSWindowTraitOrientation: {
return self.screenView.hasOrientationSet;
}
case RNSWindowTraitHomeIndicatorHidden: {
return self.screenView.hasHomeIndicatorHiddenSet;
}
default: {
RCTLogError(@"Unknown trait passed: %d", (int)trait);
}
}
return NO;
}
- (UIViewController *)childViewControllerForStatusBarHidden
{
UIViewController *vc = [self findChildVCForConfigAndTrait:RNSWindowTraitHidden includingModals:NO];
return vc == self ? nil : vc;
}
- (BOOL)prefersStatusBarHidden
{
return self.screenView.statusBarHidden;
}
- (UIViewController *)childViewControllerForStatusBarStyle
{
UIViewController *vc = [self findChildVCForConfigAndTrait:RNSWindowTraitStyle includingModals:NO];
return vc == self ? nil : vc;
}
- (UIStatusBarStyle)preferredStatusBarStyle
{
return [RNSScreenWindowTraits statusBarStyleForRNSStatusBarStyle:self.screenView.statusBarStyle];
}
- (UIStatusBarAnimation)preferredStatusBarUpdateAnimation
{
UIViewController *vc = [self findChildVCForConfigAndTrait:RNSWindowTraitAnimation includingModals:NO];
if ([vc isKindOfClass:[RNSScreen class]]) {
return ((RNSScreen *)vc).screenView.statusBarAnimation;
}
return UIStatusBarAnimationFade;
}
- (UIInterfaceOrientationMask)supportedInterfaceOrientations
{
UIViewController *vc = [self findChildVCForConfigAndTrait:RNSWindowTraitOrientation includingModals:YES];
if ([vc isKindOfClass:[RNSScreen class]]) {
return ((RNSScreen *)vc).screenView.screenOrientation;
}
return UIInterfaceOrientationMaskAllButUpsideDown;
}
- (UIViewController *)childViewControllerForHomeIndicatorAutoHidden
{
UIViewController *vc = [self findChildVCForConfigAndTrait:RNSWindowTraitHomeIndicatorHidden includingModals:YES];
return vc == self ? nil : vc;
}
- (BOOL)prefersHomeIndicatorAutoHidden
{
return self.screenView.homeIndicatorHidden;
}
- (int)getParentChildrenCount
{
return (int)[[self.screenView.reactSuperview reactSubviews] count];
}
#endif
- (int)getIndexOfView:(UIView *)view
{
return (int)[[self.screenView.reactSuperview reactSubviews] indexOfObject:view];
}
// since on Fabric the view of controller can be a snapshot of type `UIView`,
// when we want to check props of ScreenView, we need to get them from _initialView
- (RNSScreenView *)screenView
{
#ifdef RCT_NEW_ARCH_ENABLED
return _initialView;
#else
return (RNSScreenView *)self.view;
#endif
}
- (void)hideHeaderIfNecessary
{
#if !TARGET_OS_TV
// On iOS >=13, there is a bug when user transitions from screen with active search bar to screen without header
// In that case default iOS header will be shown. To fix this we hide header when the screens that appears has header
// hidden and search bar was active on previous screen. We need to do it asynchronously, because default header is
// added after viewWillAppear.
if (@available(iOS 13.0, *)) {
NSUInteger currentIndex = [self.navigationController.viewControllers indexOfObject:self];
// we need to check whether reactSubviews array is empty, because on Fabric child nodes are unmounted first ->
// reactSubviews array may be empty
RNSScreenStackHeaderConfig *config = [self.screenView findHeaderConfig];
if (currentIndex > 0 && config != nil) {
UINavigationItem *prevNavigationItem =
[self.navigationController.viewControllers objectAtIndex:currentIndex - 1].navigationItem;
BOOL wasSearchBarActive = prevNavigationItem.searchController.active;
#ifdef RCT_NEW_ARCH_ENABLED
BOOL shouldHideHeader = !config.show;
#else
BOOL shouldHideHeader = config.hide;
#endif
if (wasSearchBarActive && shouldHideHeader) {
dispatch_time_t popTime = dispatch_time(DISPATCH_TIME_NOW, 0);
dispatch_after(popTime, dispatch_get_main_queue(), ^(void) {
[self.navigationController setNavigationBarHidden:YES animated:NO];
});
}
}
}
#endif
}
- (void)presentViewController:(UIViewController *)viewControllerToPresent
animated:(BOOL)flag
completion:(void (^)())completion
{
// In order to handle presenting modals other than react-native-screens modals (e.g. react-native's Modal),
// we need to delay presenting it if we're in an ongoing transition. This might be necessary
// when we use an animation to cancel back button dismiss and try to present a modal at the same time.
// For more details see: https://github.com/software-mansion/react-native-screens/pull/2976.
if (self.parentViewController == nil) {
UIViewController *controller = self.screenView.reactSuperview.reactViewController;
if (controller.transitionCoordinator != nil) {
[controller.transitionCoordinator
animateAlongsideTransition:^(id<UIViewControllerTransitionCoordinatorContext> _Nonnull context) {
// do nothing here, we only want to be notified when transition is complete
}
completion:^(id<UIViewControllerTransitionCoordinatorContext> _Nonnull context) {
[super presentViewController:viewControllerToPresent animated:flag completion:completion];
}];
return;
}
}
[super presentViewController:viewControllerToPresent animated:flag completion:completion];
}
#pragma mark - RNSOrientationProviding
#if !TARGET_OS_TV
- (RNSOrientation)evaluateOrientation
{
if ([self.childViewControllers.lastObject respondsToSelector:@selector(evaluateOrientation)]) {
id<RNSOrientationProviding> child = static_cast<id<RNSOrientationProviding>>(self.childViewControllers.lastObject);
RNSOrientation childOrientation = [child evaluateOrientation];
if (childOrientation != RNSOrientationInherit) {
return childOrientation;
}
}
return rnscreens::conversion::RNSOrientationFromUIInterfaceOrientationMask([self supportedInterfaceOrientations]);
}
#endif // !TARGET_OS_TV
#ifdef RCT_NEW_ARCH_ENABLED
#pragma mark - Fabric specific
- (void)setViewToSnapshot
{
UIView *superView = self.view.superview;
// if we dismissed the view natively, it will already be detached from view hierarchy
if (self.view.window != nil) {
UIView *snapshot = [self.view snapshotViewAfterScreenUpdates:NO];
snapshot.frame = self.view.frame;
[self.view removeFromSuperview];
self.view = snapshot;
[superView addSubview:snapshot];
}
}
#else
#pragma mark - Paper specific
- (void)traverseForScrollView:(UIView *)view
{
if (![[self.view valueForKey:@"_bridge"] valueForKey:@"_jsThread"]) {
// we don't want to send `scrollViewDidEndDecelerating` event to JS before the JS thread is ready
return;
}
if ([NSStringFromClass([view class]) isEqualToString:@"AVPlayerView"]) {
// Traversing through AVPlayerView is an uncommon edge case that causes the disappearing screen
// to an excessive traversal through all video player elements
// (e.g., for react-native-video, this includes all controls and additional video views).
// Thus, we want to avoid unnecessary traversals through these views.
return;
}
if ([view isKindOfClass:[UIScrollView class]] &&
([[(UIScrollView *)view delegate] respondsToSelector:@selector(scrollViewDidEndDecelerating:)])) {
[[(UIScrollView *)view delegate] scrollViewDidEndDecelerating:(id)view];
}
[view.subviews enumerateObjectsUsingBlock:^(__kindof UIView *_Nonnull obj, NSUInteger idx, BOOL *_Nonnull stop) {
[self traverseForScrollView:obj];
}];
}
#endif
@end
@implementation RNSScreenManager
RCT_EXPORT_MODULE()
// we want to handle the case when activityState is nil
RCT_REMAP_VIEW_PROPERTY(activityState, activityStateOrNil, NSNumber)
RCT_EXPORT_VIEW_PROPERTY(customAnimationOnSwipe, BOOL);
RCT_EXPORT_VIEW_PROPERTY(fullScreenSwipeEnabled, BOOL);
RCT_EXPORT_VIEW_PROPERTY(fullScreenSwipeShadowEnabled, BOOL);
RCT_EXPORT_VIEW_PROPERTY(gestureEnabled, BOOL)
RCT_EXPORT_VIEW_PROPERTY(gestureResponseDistance, NSDictionary)
RCT_EXPORT_VIEW_PROPERTY(hideKeyboardOnSwipe, BOOL)
RCT_EXPORT_VIEW_PROPERTY(preventNativeDismiss, BOOL)
RCT_EXPORT_VIEW_PROPERTY(replaceAnimation, RNSScreenReplaceAnimation)
RCT_EXPORT_VIEW_PROPERTY(stackPresentation, RNSScreenStackPresentation)
RCT_EXPORT_VIEW_PROPERTY(stackAnimation, RNSScreenStackAnimation)
RCT_EXPORT_VIEW_PROPERTY(swipeDirection, RNSScreenSwipeDirection)
RCT_EXPORT_VIEW_PROPERTY(transitionDuration, NSNumber)
RCT_EXPORT_VIEW_PROPERTY(screenId, NSString);
RCT_EXPORT_VIEW_PROPERTY(onAppear, RCTDirectEventBlock);
RCT_EXPORT_VIEW_PROPERTY(onDisappear, RCTDirectEventBlock);
RCT_EXPORT_VIEW_PROPERTY(onHeaderHeightChange, RCTDirectEventBlock);
RCT_EXPORT_VIEW_PROPERTY(onDismissed, RCTDirectEventBlock);
RCT_EXPORT_VIEW_PROPERTY(onNativeDismissCancelled, RCTDirectEventBlock);
RCT_EXPORT_VIEW_PROPERTY(onTransitionProgress, RCTDirectEventBlock);
RCT_EXPORT_VIEW_PROPERTY(onWillAppear, RCTDirectEventBlock);
RCT_EXPORT_VIEW_PROPERTY(onWillDisappear, RCTDirectEventBlock);
RCT_EXPORT_VIEW_PROPERTY(onGestureCancel, RCTDirectEventBlock);
RCT_EXPORT_VIEW_PROPERTY(onSheetDetentChanged, RCTDirectEventBlock);
#if !TARGET_OS_TV
RCT_EXPORT_VIEW_PROPERTY(screenOrientation, UIInterfaceOrientationMask)
RCT_EXPORT_VIEW_PROPERTY(statusBarAnimation, UIStatusBarAnimation)
RCT_EXPORT_VIEW_PROPERTY(statusBarHidden, BOOL)
RCT_EXPORT_VIEW_PROPERTY(statusBarStyle, RNSStatusBarStyle)
RCT_EXPORT_VIEW_PROPERTY(homeIndicatorHidden, BOOL)
RCT_EXPORT_VIEW_PROPERTY(sheetAllowedDetents, NSArray<NSNumber *> *);
RCT_EXPORT_VIEW_PROPERTY(sheetLargestUndimmedDetent, NSNumber *);
RCT_EXPORT_VIEW_PROPERTY(sheetGrabberVisible, BOOL);
RCT_EXPORT_VIEW_PROPERTY(sheetCornerRadius, CGFloat);
RCT_EXPORT_VIEW_PROPERTY(sheetInitialDetent, NSInteger);
RCT_EXPORT_VIEW_PROPERTY(sheetExpandsWhenScrolledToEdge, BOOL);
#endif
#if !TARGET_OS_TV && !TARGET_OS_VISION
// See:
// 1. https://github.com/software-mansion/react-native-screens/pull/1543
// 2. https://github.com/software-mansion/react-native-screens/pull/1596
// This class is instatiated from React Native's internals during application startup
- (instancetype)init
{
if (self = [super init]) {
dispatch_async(dispatch_get_main_queue(), ^{
[[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications];
});
}
return self;
}
- (void)dealloc
{
dispatch_sync(dispatch_get_main_queue(), ^{
[[UIDevice currentDevice] endGeneratingDeviceOrientationNotifications];
});
}
#endif // !TARGET_OS_TV
#ifdef RCT_NEW_ARCH_ENABLED
#else
- (UIView *)view
{
return [[RNSScreenView alloc] initWithBridge:self.bridge];
}
#endif
+ (BOOL)requiresMainQueueSetup
{
// Returning NO here despite the fact some initialization in -init method dispatches tasks
// on main queue, because the comments in RN source code states that modules which return YES
// here will be constructed ahead-of-time -- and this is not required in our case.
return NO;
}
@end
@implementation RCTConvert (RNSScreen)
RCT_ENUM_CONVERTER(
RNSScreenStackPresentation,
(@{
@"push" : @(RNSScreenStackPresentationPush),
@"modal" : @(RNSScreenStackPresentationModal),
@"fullScreenModal" : @(RNSScreenStackPresentationFullScreenModal),
@"formSheet" : @(RNSScreenStackPresentationFormSheet),
@"pageSheet" : @(RNSScreenStackPresentationPageSheet),
@"containedModal" : @(RNSScreenStackPresentationContainedModal),
@"transparentModal" : @(RNSScreenStackPresentationTransparentModal),
@"containedTransparentModal" : @(RNSScreenStackPresentationContainedTransparentModal)
}),
RNSScreenStackPresentationPush,
integerValue)
RCT_ENUM_CONVERTER(
RNSScreenStackAnimation,
(@{
@"default" : @(RNSScreenStackAnimationDefault),
@"none" : @(RNSScreenStackAnimationNone),
@"fade" : @(RNSScreenStackAnimationFade),
@"fade_from_bottom" : @(RNSScreenStackAnimationFadeFromBottom),
@"flip" : @(RNSScreenStackAnimationFlip),
@"simple_push" : @(RNSScreenStackAnimationSimplePush),
@"slide_from_bottom" : @(RNSScreenStackAnimationSlideFromBottom),
@"slide_from_right" : @(RNSScreenStackAnimationDefault),
@"slide_from_left" : @(RNSScreenStackAnimationSlideFromLeft),
@"ios_from_right" : @(RNSScreenStackAnimationDefault),
@"ios_from_left" : @(RNSScreenStackAnimationSlideFromLeft),
}),
RNSScreenStackAnimationDefault,
integerValue)
RCT_ENUM_CONVERTER(
RNSScreenReplaceAnimation,
(@{
@"push" : @(RNSScreenReplaceAnimationPush),
@"pop" : @(RNSScreenReplaceAnimationPop),
}),
RNSScreenReplaceAnimationPop,
integerValue)
RCT_ENUM_CONVERTER(
RNSScreenSwipeDirection,
(@{
@"vertical" : @(RNSScreenSwipeDirectionVertical),
@"horizontal" : @(RNSScreenSwipeDirectionHorizontal),
}),
RNSScreenSwipeDirectionHorizontal,
integerValue)
#if !TARGET_OS_TV
RCT_ENUM_CONVERTER(
UIStatusBarAnimation,
(@{
@"none" : @(UIStatusBarAnimationNone),
@"fade" : @(UIStatusBarAnimationFade),
@"slide" : @(UIStatusBarAnimationSlide)
}),
UIStatusBarAnimationNone,
integerValue)
RCT_ENUM_CONVERTER(
RNSStatusBarStyle,
(@{
@"auto" : @(RNSStatusBarStyleAuto),
@"inverted" : @(RNSStatusBarStyleInverted),
@"light" : @(RNSStatusBarStyleLight),
@"dark" : @(RNSStatusBarStyleDark),
}),
RNSStatusBarStyleAuto,
integerValue)
RCT_ENUM_CONVERTER(
RNSScreenDetentType,
(@{
@"large" : @(RNSScreenDetentTypeLarge),
@"medium" : @(RNSScreenDetentTypeMedium),
@"all" : @(RNSScreenDetentTypeAll),
}),
RNSScreenDetentTypeAll,
integerValue)
+ (UIInterfaceOrientationMask)UIInterfaceOrientationMask:(id)json
{
json = [self NSString:json];
if ([json isEqualToString:@"default"]) {
return UIInterfaceOrientationMaskAllButUpsideDown;
} else if ([json isEqualToString:@"all"]) {
return UIInterfaceOrientationMaskAll;
} else if ([json isEqualToString:@"portrait"]) {
return UIInterfaceOrientationMaskPortrait | UIInterfaceOrientationMaskPortraitUpsideDown;
} else if ([json isEqualToString:@"portrait_up"]) {
return UIInterfaceOrientationMaskPortrait;
} else if ([json isEqualToString:@"portrait_down"]) {
return UIInterfaceOrientationMaskPortraitUpsideDown;
} else if ([json isEqualToString:@"landscape"]) {
return UIInterfaceOrientationMaskLandscape;
} else if ([json isEqualToString:@"landscape_left"]) {
return UIInterfaceOrientationMaskLandscapeLeft;
} else if ([json isEqualToString:@"landscape_right"]) {
return UIInterfaceOrientationMaskLandscapeRight;
}
return UIInterfaceOrientationMaskAllButUpsideDown;
}
#endif
@end