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64 lines
2.2 KiB
Objective-C
64 lines
2.2 KiB
Objective-C
//
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// ASDisplayNode+Ancestry.h
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// Texture
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//
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// Copyright (c) 2014-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under the BSD-style license found in the
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// LICENSE file in the /ASDK-Licenses directory of this source tree. An additional
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// grant of patent rights can be found in the PATENTS file in the same directory.
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//
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// Modifications to this file made after 4/13/2017 are: Copyright (c) 2017-present,
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// Pinterest, Inc. Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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#import <Foundation/Foundation.h>
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#import <AsyncDisplayKit/ASDisplayNode.h>
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NS_ASSUME_NONNULL_BEGIN
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@interface ASDisplayNode (Ancestry)
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/**
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* Returns an object to enumerate the supernode ancestry of this node, starting with its supernode.
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*
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* For instance, you could write:
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* for (ASDisplayNode *node in self.supernodes) {
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* if ([node.backgroundColor isEqual:[UIColor blueColor]]) {
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* node.hidden = YES;
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* }
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* }
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*
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* Note: If this property is read on the main thread, the enumeration will attempt to go up
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* the layer hierarchy if it finds a break in the display node hierarchy.
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*/
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@property (atomic, readonly) id<NSFastEnumeration> supernodes;
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/**
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* Same as `supernodes` but begins the enumeration with self.
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*/
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@property (atomic, readonly) id<NSFastEnumeration> supernodesIncludingSelf;
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/**
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* Searches the supernodes of this node for one matching the given class.
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*
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* @param supernodeClass The class of node you're looking for.
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* @param includeSelf Whether to include self in the search.
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* @return A node of the given class that is an ancestor of this node, or nil.
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*
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* @note See the documentation on `supernodes` for details about the upward traversal.
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*/
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- (nullable __kindof ASDisplayNode *)supernodeOfClass:(Class)supernodeClass includingSelf:(BOOL)includeSelf;
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/**
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* e.g. "(<MYTextNode: 0xFFFF>, <MYTextContainingNode: 0xFFFF>, <MYCellNode: 0xFFFF>)"
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*/
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@property (atomic, copy, readonly) NSString *ancestryDescription;
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@end
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NS_ASSUME_NONNULL_END
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