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501fed16aa
Summary: Don't set the new one in the subnodes yet as this will cause ASEnvironmentTraitCollectionIsEqualToASEnvironmentTraitCollection to return NO if only the displayContext changed. Reviewers: garrett, levi, rmalik Reviewed By: garrett, levi, rmalik Subscribers: rmalik Differential Revision: https://phabricator.pinadmin.com/D94320
73 lines
2.8 KiB
Objective-C
73 lines
2.8 KiB
Objective-C
//
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// ASViewController.h
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// AsyncDisplayKit
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//
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// Created by Huy Nguyen on 16/09/15.
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// Copyright (c) 2015 Facebook. All rights reserved.
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//
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#import <UIKit/UIKit.h>
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#import <AsyncDisplayKit/ASDisplayNode.h>
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#import <AsyncDisplayKit/ASVisibilityProtocols.h>
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@class ASTraitCollection;
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NS_ASSUME_NONNULL_BEGIN
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typedef ASTraitCollection * _Nonnull (^ASDisplayTraitsForTraitCollectionBlock)(UITraitCollection *traitCollection);
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typedef ASTraitCollection * _Nonnull (^ASDisplayTraitsForTraitWindowSizeBlock)(CGSize windowSize);
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@interface ASViewController<__covariant DisplayNodeType : ASDisplayNode *> : UIViewController <ASVisibilityDepth>
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- (instancetype)initWithNode:(DisplayNodeType)node NS_DESIGNATED_INITIALIZER;
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@property (nonatomic, strong, readonly) DisplayNodeType node;
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/**
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* An optional context to pass along with an ASTraitCollection.
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* This can be used to pass any internal state to all subnodes via the ASTraitCollection that is not
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* included in UITraitCollection. This could range from more fine-tuned size classes to a class of
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* constants that is based upon the new trait collection.
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*
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* Be aware that internally this context is held by a C struct which cannot retain the pointer. Therefore
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* ASVC keeps a strong reference to the context to make sure that it stays alive. If you change this value
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* it will propagate the change to the subnodes.
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*/
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@property (nonatomic, strong) id _Nullable traitCollectionContext;
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/**
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* Set this block to customize the ASDisplayTraits returned when the VC transitions to the given traitCollection.
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*/
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@property (nonatomic, copy) ASDisplayTraitsForTraitCollectionBlock overrideDisplayTraitsWithTraitCollection;
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/**
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* Set this block to customize the ASDisplayTraits returned when the VC transitions to the given window size.
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*/
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@property (nonatomic, copy) ASDisplayTraitsForTraitWindowSizeBlock overrideDisplayTraitsWithWindowSize;
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/**
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* @abstract Passthrough property to the the .interfaceState of the node.
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* @return The current ASInterfaceState of the node, indicating whether it is visible and other situational properties.
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* @see ASInterfaceState
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*/
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@property (nonatomic, readonly) ASInterfaceState interfaceState;
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// AsyncDisplayKit 2.0 BETA: This property is still being tested, but it allows
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// blocking as a view controller becomes visible to ensure no placeholders flash onscreen.
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// Refer to examples/SynchronousConcurrency, AsyncViewController.m
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@property (nonatomic, assign) BOOL neverShowPlaceholders;
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/**
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* The constrained size used to measure the backing node.
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*
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* @discussion Defaults to providing a size range that uses the view controller view's bounds as
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* both the min and max definitions. Override this method to provide a custom size range to the
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* backing node.
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*/
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- (ASSizeRange)nodeConstrainedSize;
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@end
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NS_ASSUME_NONNULL_END |