//
//  ASLayoutController.h
//  Texture
//
//  Copyright (c) Facebook, Inc. and its affiliates.  All rights reserved.
//  Changes after 4/13/2017 are: Copyright (c) Pinterest, Inc.  All rights reserved.
//  Licensed under Apache 2.0: http://www.apache.org/licenses/LICENSE-2.0
//

#import <UIKit/UIKit.h>

#include <vector>

#import <AsyncDisplayKit/ASBaseDefines.h>
#import <AsyncDisplayKit/ASElementMap.h>
#import <AsyncDisplayKit/ASLayoutRangeType.h>
#import <AsyncDisplayKit/ASScrollDirection.h>

NS_ASSUME_NONNULL_BEGIN

@class ASCollectionElement, ASElementMap;

struct ASDirectionalScreenfulBuffer {
  CGFloat positiveDirection; // Positive relative to iOS Core Animation layer coordinate space.
  CGFloat negativeDirection;
};
typedef struct ASDirectionalScreenfulBuffer ASDirectionalScreenfulBuffer;

@protocol ASLayoutController <NSObject>

- (void)setTuningParameters:(ASRangeTuningParameters)tuningParameters forRangeMode:(ASLayoutRangeMode)rangeMode rangeType:(ASLayoutRangeType)rangeType;

- (ASRangeTuningParameters)tuningParametersForRangeMode:(ASLayoutRangeMode)rangeMode rangeType:(ASLayoutRangeType)rangeType;

@property (nonatomic, readonly) CGRect bounds;

/** Queries the layout for the items in the given rect. Called by ASRangeController. */
- (void)getLayoutItemsInRect:(CGRect)rect buffer:(std::vector<ASCollectionLayoutItem> *)buffer;

@end

NS_ASSUME_NONNULL_END