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1410b29b63
* Lock up to yogaRoot during layout to avoid dead lock. 1) lock to root for tree 2) lock self to change parent (& consequently root) 3) Implement ASLocking (tryLock) on ASNodeController 4) add lockPair to try-lock node & controller together 5) lock controllers if they exist in lockToRoot... Disable some asserts due to lock to root. :( LL# No commands remaining. * Add macro so non-Yoga still builds :) * wut
60 lines
2.1 KiB
Objective-C
60 lines
2.1 KiB
Objective-C
//
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// ASNodeController+Beta.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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#import <AsyncDisplayKit/ASDisplayNode.h>
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#import <AsyncDisplayKit/ASDisplayNode+Subclasses.h> // for ASInterfaceState protocol
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/* ASNodeController is currently beta and open to change in the future */
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@interface ASNodeController<__covariant DisplayNodeType : ASDisplayNode *>
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: NSObject <ASInterfaceStateDelegate, ASLocking>
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@property (nonatomic, strong /* may be weak! */) DisplayNodeType node;
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// Until an ASNodeController can be provided in place of an ASCellNode, some apps may prefer to have
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// nodes keep their controllers alive (and a weak reference from controller to node)
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@property (nonatomic) BOOL shouldInvertStrongReference;
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- (void)loadNode;
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// for descriptions see <ASInterfaceState> definition
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- (void)nodeDidLoad ASDISPLAYNODE_REQUIRES_SUPER;
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- (void)nodeDidLayout ASDISPLAYNODE_REQUIRES_SUPER;
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// This is only called during Yoga-driven layouts.
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- (void)nodeWillCalculateLayout:(ASSizeRange)constrainedSize ASDISPLAYNODE_REQUIRES_SUPER;
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- (void)didEnterVisibleState ASDISPLAYNODE_REQUIRES_SUPER;
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- (void)didExitVisibleState ASDISPLAYNODE_REQUIRES_SUPER;
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- (void)didEnterDisplayState ASDISPLAYNODE_REQUIRES_SUPER;
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- (void)didExitDisplayState ASDISPLAYNODE_REQUIRES_SUPER;
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- (void)didEnterPreloadState ASDISPLAYNODE_REQUIRES_SUPER;
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- (void)didExitPreloadState ASDISPLAYNODE_REQUIRES_SUPER;
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- (void)interfaceStateDidChange:(ASInterfaceState)newState
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fromState:(ASInterfaceState)oldState ASDISPLAYNODE_REQUIRES_SUPER;
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- (void)hierarchyDisplayDidFinish ASDISPLAYNODE_REQUIRES_SUPER;
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/**
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* @discussion Attempts (via ASLockSequence, a backing-off spinlock similar to
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* std::lock()) to lock both the node and its ASNodeController, if one exists.
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*/
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- (ASLockSet)lockPair;
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@end
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@interface ASDisplayNode (ASNodeController)
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@property(nonatomic, readonly) ASNodeController *nodeController;
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@end
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