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git-subtree-dir: submodules/AsyncDisplayKit git-subtree-mainline: d06f423e0ed3df1fed9bd10d79ee312a9179b632 git-subtree-split: 02bedc12816e251ad71777f9d2578329b6d2bef6
82 lines
3.0 KiB
Objective-C
82 lines
3.0 KiB
Objective-C
//
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// _ASAsyncTransactionContainer.h
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// Texture
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//
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// Copyright (c) Facebook, Inc. and its affiliates. All rights reserved.
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// Changes after 4/13/2017 are: Copyright (c) Pinterest, Inc. All rights reserved.
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// Licensed under Apache 2.0: http://www.apache.org/licenses/LICENSE-2.0
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//
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#pragma once
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#import <UIKit/UIKit.h>
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NS_ASSUME_NONNULL_BEGIN
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@class _ASAsyncTransaction;
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typedef NS_ENUM(NSUInteger, ASAsyncTransactionContainerState) {
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/**
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The async container has no outstanding transactions.
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Whatever it is displaying is up-to-date.
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*/
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ASAsyncTransactionContainerStateNoTransactions = 0,
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/**
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The async container has one or more outstanding async transactions.
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Its contents may be out of date or showing a placeholder, depending on the configuration of the contained ASDisplayLayers.
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*/
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ASAsyncTransactionContainerStatePendingTransactions,
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};
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@protocol ASAsyncTransactionContainer
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/**
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@summary If YES, the receiver is marked as a container for async transactions, grouping all of the transactions
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in the container hierarchy below the receiver together in a single ASAsyncTransaction.
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@default NO
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*/
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@property (nonatomic, getter=asyncdisplaykit_isAsyncTransactionContainer, setter=asyncdisplaykit_setAsyncTransactionContainer:) BOOL asyncdisplaykit_asyncTransactionContainer;
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/**
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@summary The current state of the receiver; indicates if it is currently performing asynchronous operations or if all operations have finished/canceled.
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*/
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@property (nonatomic, readonly) ASAsyncTransactionContainerState asyncdisplaykit_asyncTransactionContainerState;
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/**
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@summary Cancels all async transactions on the receiver.
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*/
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- (void)asyncdisplaykit_cancelAsyncTransactions;
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@property (nullable, nonatomic, setter=asyncdisplaykit_setCurrentAsyncTransaction:) _ASAsyncTransaction *asyncdisplaykit_currentAsyncTransaction;
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@end
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@interface CALayer (ASAsyncTransactionContainer) <ASAsyncTransactionContainer>
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/**
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@summary Returns the current async transaction for this layer. A new transaction is created if one
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did not already exist. This method will always return an open, uncommitted transaction.
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@desc asyncdisplaykit_asyncTransactionContainer does not need to be YES for this to return a transaction.
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Defaults to nil.
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*/
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@property (nullable, nonatomic, readonly) _ASAsyncTransaction *asyncdisplaykit_asyncTransaction;
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/**
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@summary Goes up the superlayer chain until it finds the first layer with asyncdisplaykit_asyncTransactionContainer=YES (including the receiver) and returns it.
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Returns nil if no parent container is found.
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*/
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@property (nullable, nonatomic, readonly) CALayer *asyncdisplaykit_parentTransactionContainer;
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/**
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@summary Whether or not this layer should serve as a transaction container.
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Defaults to NO.
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*/
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@property (nonatomic, getter=asyncdisplaykit_isAsyncTransactionContainer, setter = asyncdisplaykit_setAsyncTransactionContainer:) BOOL asyncdisplaykit_asyncTransactionContainer;
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@end
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@interface UIView (ASAsyncTransactionContainer) <ASAsyncTransactionContainer>
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@end
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NS_ASSUME_NONNULL_END
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