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404795dc02
* Drop support for iOS 7 * Copy reference images * Update deployment for sample projects * Update version * Update "Life Without Cocoapods"
44 lines
1.2 KiB
Objective-C
44 lines
1.2 KiB
Objective-C
//
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// ASSupplementaryNodeSource.h
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// AsyncDisplayKit
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//
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// Created by Adlai Holler on 1/19/17.
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// Copyright © 2017 Facebook. All rights reserved.
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//
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#import <Foundation/Foundation.h>
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#import <AsyncDisplayKit/ASDimension.h>
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NS_ASSUME_NONNULL_BEGIN
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@class ASCellNode;
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@protocol ASSupplementaryNodeSource <NSObject>
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/**
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* A method to provide the node for the item at the given index.
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*
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* @param elementKind The kind of supplementary element.
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* @param index The index of the item.
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* @return A node for the supplementary element.
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* @see collectionNode:nodeForSupplementaryElementOfKind:atIndexPath:
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*/
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- (ASCellNode *)nodeForSupplementaryElementOfKind:(NSString *)elementKind atIndex:(NSInteger)index;
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@optional
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/**
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* A method to provide the size range used for measuring the supplementary
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* element of the given kind at the given index.
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*
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* @param elementKind The kind of supplementary element.
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* @param index The index of the item.
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* @return A size range used for asynchronously measuring the node.
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* @see collectionNode:constrainedSizeForSupplementaryElementOfKind:atIndexPath:
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*/
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- (ASSizeRange)sizeRangeForSupplementaryElementOfKind:(NSString *)elementKind atIndex:(NSInteger)index;
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@end
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NS_ASSUME_NONNULL_END
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