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65 lines
1.7 KiB
Objective-C
65 lines
1.7 KiB
Objective-C
//
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// ASContextTransitioning.h
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// AsyncDisplayKit
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//
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// Created by Levi McCallum on 2/4/16.
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// Copyright © 2016 Facebook. All rights reserved.
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//
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#import <AsyncDisplayKit/ASDisplayNode.h>
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extern NSString * const ASTransitionContextFromLayoutKey;
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extern NSString * const ASTransitionContextToLayoutKey;
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@protocol ASContextTransitioning <NSObject>
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/**
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@abstract Defines if the given transition is animated
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*/
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- (BOOL)isAnimated;
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/**
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* @abstract Retrieve either the "from" or "to" layout
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*/
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- (ASLayout *)layoutForKey:(NSString *)key;
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/**
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* @abstract Retrieve either the "from" or "to" constrainedSize
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*/
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- (ASSizeRange)constrainedSizeForKey:(NSString *)key;
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/**
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* @abstract Retrieve the subnodes from either the "from" or "to" layout
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*/
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- (NSArray<ASDisplayNode *> *)subnodesForKey:(NSString *)key;
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/**
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* @abstract Subnodes that have been inserted in the layout transition
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*/
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- (NSArray<ASDisplayNode *> *)insertedSubnodes;
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/**
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* @abstract Subnodes that will be removed in the layout transition
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*/
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- (NSArray<ASDisplayNode *> *)removedSubnodes;
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/**
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@abstract The frame for the given node before the transition began.
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@discussion Returns CGRectNull if the node was not in the hierarchy before the transition.
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*/
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- (CGRect)initialFrameForNode:(ASDisplayNode *)node;
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/**
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@abstract The frame for the given node when the transition completes.
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@discussion Returns CGRectNull if the node is no longer in the hierarchy after the transition.
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*/
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- (CGRect)finalFrameForNode:(ASDisplayNode *)node;
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/**
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@abstract Invoke this method when the transition is completed in `animateLayoutTransition:`
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@discussion Passing NO to `didComplete` will set the original layout as the new layout.
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*/
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- (void)completeTransition:(BOOL)didComplete;
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@end
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