#import <UIKit/UIKit.h>

#import "FDStackView.h"

@protocol FDStackViewLayoutArrangementSubclassHook <NSObject>

@property (nonatomic, assign, readonly) NSLayoutAttribute dimensionAttributeForCurrentAxis;

@property (nonatomic, assign, readonly) NSLayoutAttribute minAttributeForCanvasConnections;

@property (nonatomic, assign, readonly) NSLayoutAttribute maxAttributeForCanvasConnections;

@property (nonatomic, assign, readonly) NSLayoutAttribute centerAttributeForCanvasConnections;

- (void)removeDeprecatedConstraints;

- (void)updateCanvasConnectionConstraintsIfNecessary;

- (NSLayoutRelation)layoutRelationForCanvasConnectionForAttribute:(NSLayoutAttribute)attribute;

@interface FDStackViewLayoutArrangement : NSObject <FDStackViewLayoutArrangementSubclassHook>

@property (nonatomic, weak) UIView *canvas;

@property (nonatomic, assign) UILayoutConstraintAxis axis;

@property (nonatomic, strong) NSMutableArray<UIView *> *mutableItems;

@property (nonatomic, strong) NSMutableArray<NSLayoutConstraint *> *canvasConnectionConstraints;

- (instancetype)initWithItems:(NSArray<UIView *> *)items onAxis:(UILayoutConstraintAxis)axis;

- (void)insertItem:(UIView *)item atIndex:(NSUInteger)index;

- (void)removeItem:(UIView *)item;

- (void)addItem:(UIView *)item;

@property (nonatomic, copy, readonly) NSArray<UIView *> *items;

- (void)intrinsicContentSizeInvalidatedForItem:(id)item;

- (void)updateArrangementConstraints;