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Implement onRequestClose for iOS 13+ modals #27618

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Implement onRequestClose for iOS 13+ modals #27618

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3 changes: 2 additions & 1 deletion Libraries/Modal/Modal.js
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Original file line number Diff line number Diff line change
Expand Up @@ -95,7 +95,8 @@ export type Props = $ReadOnly<{|

/**
* The `onRequestClose` callback is called when the user taps the hardware
* back button on Android or the menu button on Apple TV.
* back button on Android, the menu button on Apple TV, or a modal is dismissed
* with a gesture on iOS 13+.
*
* This is required on Apple TV and Android.
*
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3 changes: 2 additions & 1 deletion Libraries/Modal/RCTModalHostViewNativeComponent.js
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Expand Up @@ -70,7 +70,8 @@ type NativeProps = $ReadOnly<{|

/**
* The `onRequestClose` callback is called when the user taps the hardware
* back button on Android or the menu button on Apple TV.
* back button on Android, the menu button on Apple TV, or a modal is dismissed
* with a gesture on iOS 13+.
*
* This is required on Apple TV and Android.
*
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1 change: 1 addition & 0 deletions React/Fabric/Mounting/ComponentViews/Modal/RCTModalHostViewComponentView.mm
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Expand Up @@ -111,6 +111,7 @@ - (instancetype)initWithFrame:(CGRect)frame
_viewController = [RCTFabricModalHostViewController new];
_viewController.modalTransitionStyle = UIModalTransitionStyleCoverVertical;
_viewController.delegate = self;
_viewController.presentationController.delegate = self;
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@scarlac scarlac Feb 7, 2020 •
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See below/above. We may need to add similar code in this file as well.

}

return self;
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3 changes: 2 additions & 1 deletion React/Views/RCTModalHostView.h
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Expand Up @@ -32,8 +32,9 @@
@property (nonatomic, copy) NSArray<NSString *> *supportedOrientations;
@property (nonatomic, copy) RCTDirectEventBlock onOrientationChange;

#if TARGET_OS_TV
@property (nonatomic, copy) RCTDirectEventBlock onRequestClose;

#if TARGET_OS_TV
@property (nonatomic, strong) RCTTVRemoteHandler *tvRemoteHandler;
#endif

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16 changes: 15 additions & 1 deletion React/Views/RCTModalHostView.m
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Expand Up @@ -20,6 +20,10 @@
#import "RCTTVRemoteHandler.h"
#endif

@interface RCTModalHostView () <UIAdaptivePresentationControllerDelegate>

@end

@implementation RCTModalHostView
{
__weak RCTBridge *_bridge;
Expand All @@ -46,6 +50,7 @@ - (instancetype)initWithBridge:(RCTBridge *)bridge
UIView *containerView = [UIView new];
containerView.autoresizingMask = UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleWidth;
_modalViewController.view = containerView;
_modalViewController.presentationController.delegate = self;
_touchHandler = [[RCTTouchHandler alloc] initWithBridge:bridge];
#if TARGET_OS_TV
_menuButtonGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(menuButtonPressed:)];
Expand All @@ -70,19 +75,21 @@ - (void)menuButtonPressed:(__unused UIGestureRecognizer *)gestureRecognizer
_onRequestClose(nil);
}
}
#endif

- (void)setOnRequestClose:(RCTDirectEventBlock)onRequestClose
{
_onRequestClose = onRequestClose;
#if TARGET_OS_TV
if (_reactSubview) {
if (_onRequestClose && _menuButtonGestureRecognizer) {
[_reactSubview addGestureRecognizer:_menuButtonGestureRecognizer];
} else {
[_reactSubview removeGestureRecognizer:_menuButtonGestureRecognizer];
}
}
#endif
}
#endif

- (void)notifyForBoundsChange:(CGRect)newBounds
{
Expand Down Expand Up @@ -257,4 +264,11 @@ - (UIInterfaceOrientationMask)supportedOrientationsMask
}
#endif

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We'll need to add this to support changing the presentation style after setting the delegate

// Method must be implemented, otherwise iOS defaults to 'automatic' (pageSheet on >= iOS 13.0)
- (UIModalPresentationStyle)adaptivePresentationStyleForPresentationController:(UIPresentationController *)controller traitCollection:(UITraitCollection *)traitCollection
{
  return self.presentationStyle;
}

- (void)presentationControllerDidDismiss:(UIPresentationController *)presentationController
{
if (_onRequestClose) {
_onRequestClose(nil);
}
}

@end
3 changes: 0 additions & 3 deletions React/Views/RCTModalHostViewManager.m
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Expand Up @@ -108,9 +108,6 @@ - (void)invalidate
RCT_EXPORT_VIEW_PROPERTY(identifier, NSNumber)
RCT_EXPORT_VIEW_PROPERTY(supportedOrientations, NSArray)
RCT_EXPORT_VIEW_PROPERTY(onOrientationChange, RCTDirectEventBlock)

#if TARGET_OS_TV
RCT_EXPORT_VIEW_PROPERTY(onRequestClose, RCTDirectEventBlock)
#endif

@end