Medium/UISheetPresentationController/1.m

UISheetPresentationController_1.m

//
// SA13SheetPresentationController
//

static Class _SA13SheetPresentationControllerKlass = nil;

API_AVAILABLE(ios(13.0)) API_UNAVAILABLE(tvos, watchos) NS_SWIFT_UI_ACTOR
@interface SUI13SheetPresentationController : NSObject

@property (nonatomic, assign) BOOL shouldFullscreen;
@property (nonatomic, assign) BOOL shouldRespectPresentationContext;

#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Warc-performSelector-leaks"
+ (void)load 
{
  static dispatch_once_t onceToken;
  dispatch_once(&onceToken, ^{
    NSString *klassName = @"_SA13SheetPresentationController";
    
    Class superklass = NSClassFromString(@"_UISheetPresentationController");
    Class klass = objc_allocateClassPair(superklass, [klassName UTF8String], 0);
    
    objc_registerClassPair(klass);
  });
}

#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wobjc-designated-initializers"
- (instancetype)initWithPresentedViewController:(UIViewController *)presentedViewController
                       presentingViewController:(UIViewController *)presentingViewController
{
  self = [[_SUI13SheetPresentationControllerKlass alloc] initWithPresentedViewController:presentedViewController
                                                                presentingViewController:presentingViewController];
  return self;
}
#pragma clang diagnostic pop

@end

//
// SA15SheetPresentationController
//

API_AVAILABLE(ios(15.0)) API_UNAVAILABLE(tvos, watchos) NS_SWIFT_UI_ACTOR
@interface SA15SheetPresentationController : UISheetPresentationController

@property (nonatomic, assign) BOOL shouldFullscreen;
@property (nonatomic, assign) BOOL shouldRespectPresentationContext;

@end

@implementation SA15SheetPresentationController

@end

//
// SASheetPresentationController
//

@interface SASheetPresentationController : UIPresentationController

@property (nonatomic, assign) BOOL shouldFullscreen;
@property (nonatomic, assign) BOOL shouldRespectPresentationContext;

- (void)performAnimatedChanges:(void (NS_NOESCAPE ^)(void))changes;
- (void)invalidateDetents;

@end

@implementation SASheetPresentationController

#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wobjc-designated-initializers"
- (instancetype)initWithPresentedViewController:(UIViewController *)presentedViewController
                       presentingViewController:(UIViewController *)presentingViewController
{
  if (@available(iOS 15, *)) {
    self = (id)[[SA15SheetPresentationController alloc] initWithPresentedViewController:presentedViewController
                                                               presentingViewController:presentingViewController];
  } else if (@available(iOS 13, *)) {
    self = (id)[[SA13SheetPresentationController alloc] initWithPresentedViewController:presentedViewController
                                                               presentingViewController:presentingViewController];
  } else {
    [[NSException exceptionWithName:NSGenericException
                             reason:@"SASheetPresentationController only available from iOS 13."
                           userInfo:nil] raise];
    }
  return self;
}
#pragma clang diagnostic pop

@end