Swiftgram/Source/Details/ASCollectionElement.h
2017-02-26 18:14:13 -08:00

45 lines
1.5 KiB
Objective-C

//
// ASCollectionElement.h
// AsyncDisplayKit
//
// Created by Huy Nguyen on 2/28/16.
//
// Copyright (c) 2014-present, Facebook, Inc. All rights reserved.
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the root directory of this source tree. An additional grant
// of patent rights can be found in the PATENTS file in the same directory.
//
#import <AsyncDisplayKit/ASDataController.h>
#import <AsyncDisplayKit/ASTraitCollection.h>
NS_ASSUME_NONNULL_BEGIN
AS_SUBCLASSING_RESTRICTED
@interface ASCollectionElement : NSObject
//TODO change this to be a generic "kind" or "elementKind" that exposes `nil` for row kind
@property (nonatomic, readonly, copy, nullable) NSString *supplementaryElementKind;
@property (nonatomic, assign) ASSizeRange constrainedSize;
@property (weak, nonatomic) id<ASTraitEnvironment> traitEnvironment;
- (instancetype)initWithNodeBlock:(ASCellNodeBlock)nodeBlock
supplementaryElementKind:(nullable NSString *)supplementaryElementKind
constrainedSize:(ASSizeRange)constrainedSize
environment:(id<ASTraitEnvironment>)environment;
/**
* @return The node, running the node block if necessary. The node block will be discarded
* after the first time it is run.
*/
@property (strong, readonly) ASCellNode *node;
/**
* @return The node, if the node block has been run already.
*/
@property (strong, readonly, nullable) ASCellNode *nodeIfAllocated;
@end
NS_ASSUME_NONNULL_END