RNGestureHandler.h

#import "RNGHUIKit.h"
#import "RNGestureHandlerActionType.h"
#import "RNGestureHandlerDirection.h"
#import "RNGestureHandlerEventHandlerType.h"
#import "RNGestureHandlerEvents.h"
#import "RNGestureHandlerPointerEvents.h"
#import "RNGestureHandlerPointerTracker.h"
#import "RNGestureHandlerPointerType.h"
#import "RNGestureHandlerState.h"

#import <Foundation/Foundation.h>
#import <React/RCTConvert.h>

#define VEC_LEN_SQ(pt) (pt.x * pt.x + pt.y * pt.y)
#define TEST_MIN_IF_NOT_NAN(value, limit) \
  (!isnan(limit) && ((limit < 0 && value <= limit) || (limit >= 0 && value >= limit)))

#define TEST_MAX_IF_NOT_NAN(value, max) (!isnan(max) && ((max < 0 && value < max) || (max >= 0 && value > max)))

#define APPLY_PROP(recognizer, config, type, prop, propName) \
  do {                                                       \
    id value = config[propName];                             \
    if (value != nil) {                                      \
      recognizer.prop = [RCTConvert type:value];             \
    }                                                        \
  } while (0)

#define APPLY_FLOAT_PROP(prop)                              \
  do {                                                      \
    APPLY_PROP(recognizer, config, CGFloat, prop, @ #prop); \
  } while (0)
#define APPLY_INT_PROP(prop)                                  \
  do {                                                        \
    APPLY_PROP(recognizer, config, NSInteger, prop, @ #prop); \
  } while (0)
#define APPLY_NAMED_INT_PROP(prop, propName)                   \
  do {                                                         \
    APPLY_PROP(recognizer, config, NSInteger, prop, propName); \
  } while (0)

@protocol RNGestureHandlerEventEmitter

- (void)sendEvent:(nonnull RNGestureHandlerStateChange *)event
    withActionType:(RNGestureHandlerActionType)actionType
    forHandlerType:(RNGestureHandlerEventHandlerType)eventHandlerType
           forView:(nonnull RNGHUIView *)detectorView;

- (void)sendNativeTouchEventForGestureHandler:(nonnull RNGestureHandler *)handler
                              withPointerType:(NSInteger)pointerType
                               forHandlerType:(RNGestureHandlerEventHandlerType)eventHandlerType;

@end

@protocol RNRootViewGestureRecognizerDelegate <UIGestureRecognizerDelegate>

- (void)gestureRecognizer:(nullable UIGestureRecognizer *)gestureRecognizer
    didActivateInViewWithTouchHandler:(nullable RNGHUIView *)viewWithTouchHandler;

@end

@interface RNGestureHandler : NSObject <UIGestureRecognizerDelegate> {
 @protected
  UIGestureRecognizer *_recognizer;
 @protected
  RNGestureHandlerState _lastState;
 @protected
  NSInteger _pointerType;
}

+ (nullable RNGestureHandler *)findGestureHandlerByRecognizer:(nonnull UIGestureRecognizer *)recognizer;

- (nonnull instancetype)initWithTag:(nonnull NSNumber *)tag;

@property (nonatomic, readonly, nonnull) NSNumber *tag;
@property (nonatomic, weak, nullable) id<RNGestureHandlerEventEmitter> emitter;
@property (nonatomic, readonly, nullable) UIGestureRecognizer *recognizer;
@property (nonatomic, readonly, nullable) RNGestureHandlerPointerTracker *pointerTracker;
@property (nonatomic, nullable) NSString *testID;
@property (nonatomic) BOOL enabled;
@property (nonatomic) RNGestureHandlerActionType actionType;
@property (nonatomic) BOOL shouldCancelWhenOutside;
@property (nonatomic) BOOL needsPointerData;
@property (nonatomic) BOOL manualActivation;
@property (nonatomic) BOOL preventRecognizers;
@property (nonatomic) BOOL dispatchesAnimatedEvents;
@property (nonatomic) BOOL dispatchesReanimatedEvents;
@property (nonatomic, weak, nullable) RNGHUIView *hostDetectorView;
@property (nonatomic, nullable, assign) NSNumber *virtualViewTag;
@property (nonatomic, copy, nullable) NSNumber *viewTag;
@property (nonatomic, readonly) RNGestureHandlerState lastState;

- (BOOL)isViewParagraphComponent:(nullable RNGHUIView *)view;
- (nonnull RNGHUIView *)chooseViewForInteraction:(nonnull UIGestureRecognizer *)recognizer;
- (void)bindToView:(nonnull RNGHUIView *)view;
- (void)unbindFromView;
- (void)resetConfig NS_REQUIRES_SUPER;
- (void)setConfig:(nullable NSDictionary *)config NS_REQUIRES_SUPER;
- (void)updateConfig:(nullable NSDictionary *)config NS_REQUIRES_SUPER;
- (void)updateRelations:(nonnull NSDictionary *)relations;
- (void)handleGesture:(nonnull id)recognizer;
- (void)handleGesture:(nonnull id)recognizer fromReset:(BOOL)fromReset;
- (void)handleGesture:(nonnull id)recognizer
                fromReset:(BOOL)fromReset
    fromManualStateChange:(BOOL)fromManualStateChange;
- (void)handleGesture:(nonnull id)recognizer inState:(RNGestureHandlerState)state;
- (void)handleGesture:(nonnull id)recognizer
                  inState:(RNGestureHandlerState)state
    fromManualStateChange:(BOOL)fromManualStateChange;
- (BOOL)containsPointInView;
- (BOOL)wantsToHandleEventsAtPoint:(CGPoint)point;
- (RNGestureHandlerState)state;
- (nullable RNGestureHandlerEventExtraData *)eventExtraData:(nonnull id)recognizer;

- (void)stopActivationBlocker;
- (void)reset;
- (void)sendEventsInState:(RNGestureHandlerState)state
           forViewWithTag:(nonnull NSNumber *)reactTag
            withExtraData:(nonnull RNGestureHandlerEventExtraData *)extraData;
- (void)sendEventsInState:(RNGestureHandlerState)state
           forViewWithTag:(nonnull NSNumber *)reactTag
            withExtraData:(nonnull RNGestureHandlerEventExtraData *)extraData
    fromManualStateChange:(BOOL)fromManualStateChange;
- (void)sendEvent:(nonnull RNGestureHandlerStateChange *)event;
- (void)sendTouchEventInState:(RNGestureHandlerState)state forViewWithTag:(nonnull NSNumber *)reactTag;
- (nullable RNGHUIScrollView *)retrieveScrollView:(nonnull RNGHUIView *)view;
- (nonnull RNGHUIView *)findViewForEvents;
- (BOOL)wantsToAttachDirectlyToView;
- (BOOL)usesNativeOrVirtualDetector;

#if !TARGET_OS_OSX
- (BOOL)isUIScrollViewPanGestureRecognizer:(nonnull UIGestureRecognizer *)gestureRecognizer;
#else
- (BOOL)isUIScrollViewPanGestureRecognizer:(nonnull NSGestureRecognizer *)gestureRecognizer;
#endif

#if !TARGET_OS_OSX
- (void)setCurrentPointerType:(RNGestureHandlerPointerType)pointerType;
- (void)setCurrentPointerTypeForEvent:(nonnull UIEvent *)event;
#else
- (void)setCurrentPointerTypeToMouse;
#endif

@end