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54816ee1f2
* Fix trait collection handling in ASCollectionElement - Don't store a trait environment directly and request it when needed. The environment is often the cotaining collection/table node. Asking it for a trait collection is an upward tree traversal and can cause deadlocks. This reverts #2963. - If the environment changes during a change set update, notify all visible elements about the change. This fixes #2959. * Address comments
49 lines
1.6 KiB
Objective-C
49 lines
1.6 KiB
Objective-C
//
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// ASCollectionElement.h
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// AsyncDisplayKit
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//
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// Created by Huy Nguyen on 2/28/16.
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//
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// Copyright (c) 2014-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under the BSD-style license found in the
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// LICENSE file in the root directory of this source tree. An additional grant
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// of patent rights can be found in the PATENTS file in the same directory.
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//
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#import <AsyncDisplayKit/ASDataController.h>
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#import <AsyncDisplayKit/ASTraitCollection.h>
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@class ASDisplayNode;
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NS_ASSUME_NONNULL_BEGIN
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AS_SUBCLASSING_RESTRICTED
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@interface ASCollectionElement : NSObject
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//TODO change this to be a generic "kind" or "elementKind" that exposes `nil` for row kind
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@property (nonatomic, readonly, copy, nullable) NSString *supplementaryElementKind;
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@property (nonatomic, assign) ASSizeRange constrainedSize;
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@property (nonatomic, weak) ASDisplayNode *owningNode;
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@property (nonatomic, assign) ASPrimitiveTraitCollection traitCollection;
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- (instancetype)initWithNodeBlock:(ASCellNodeBlock)nodeBlock
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supplementaryElementKind:(nullable NSString *)supplementaryElementKind
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constrainedSize:(ASSizeRange)constrainedSize
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owningNode:(ASDisplayNode *)owningNode
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traitCollection:(ASPrimitiveTraitCollection)traitCollection;
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/**
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* @return The node, running the node block if necessary. The node block will be discarded
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* after the first time it is run.
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*/
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@property (strong, readonly) ASCellNode *node;
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/**
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* @return The node, if the node block has been run already.
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*/
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@property (strong, readonly, nullable) ASCellNode *nodeIfAllocated;
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@end
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NS_ASSUME_NONNULL_END
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