2020-02-03 17:31:09 +04:00

74 lines
2.0 KiB
Objective-C

//
// ASContextTransitioning.h
// Texture
//
// Copyright (c) Facebook, Inc. and its affiliates. All rights reserved.
// Changes after 4/13/2017 are: Copyright (c) Pinterest, Inc. All rights reserved.
// Licensed under Apache 2.0: http://www.apache.org/licenses/LICENSE-2.0
//
#import <UIKit/UIKit.h>
#import <AsyncDisplayKit/ASDimension.h>
@class ASDisplayNode;
@class ASLayout;
NS_ASSUME_NONNULL_BEGIN
AS_EXTERN NSString * const ASTransitionContextFromLayoutKey;
AS_EXTERN NSString * const ASTransitionContextToLayoutKey;
@protocol ASContextTransitioning <NSObject>
/**
@abstract Defines if the given transition is animated
*/
- (BOOL)isAnimated;
/**
* @abstract Retrieve either the "from" or "to" layout
*/
- (nullable ASLayout *)layoutForKey:(NSString *)key;
/**
* @abstract Retrieve either the "from" or "to" constrainedSize
*/
- (ASSizeRange)constrainedSizeForKey:(NSString *)key;
/**
* @abstract Retrieve the subnodes from either the "from" or "to" layout
*/
- (NSArray<ASDisplayNode *> *)subnodesForKey:(NSString *)key;
/**
* @abstract Subnodes that have been inserted in the layout transition
*/
- (NSArray<ASDisplayNode *> *)insertedSubnodes;
/**
* @abstract Subnodes that will be removed in the layout transition
*/
- (NSArray<ASDisplayNode *> *)removedSubnodes;
/**
@abstract The frame for the given node before the transition began.
@discussion Returns CGRectNull if the node was not in the hierarchy before the transition.
*/
- (CGRect)initialFrameForNode:(ASDisplayNode *)node;
/**
@abstract The frame for the given node when the transition completes.
@discussion Returns CGRectNull if the node is no longer in the hierarchy after the transition.
*/
- (CGRect)finalFrameForNode:(ASDisplayNode *)node;
/**
@abstract Invoke this method when the transition is completed in `animateLayoutTransition:`
@discussion Passing NO to `didComplete` will set the original layout as the new layout.
*/
- (void)completeTransition:(BOOL)didComplete;
@end
NS_ASSUME_NONNULL_END