Swiftgram/AsyncDisplayKit/ASDisplayNodeExtras.h
2015-09-16 15:21:35 -07:00

75 lines
2.8 KiB
Objective-C

/* Copyright (c) 2014-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*/
#import <QuartzCore/QuartzCore.h>
#import <UIKit/UIKit.h>
#import <AsyncDisplayKit/ASBaseDefines.h>
#import <AsyncDisplayKit/ASDisplayNode.h>
NS_ASSUME_NONNULL_BEGIN
ASDISPLAYNODE_EXTERN_C_BEGIN
/**
Given a layer, returns the associated display node, if any.
*/
extern ASDisplayNode * _Nullable ASLayerToDisplayNode(CALayer * _Nullable layer);
/**
Given a view, returns the associated display node, if any.
*/
extern ASDisplayNode * _Nullable ASViewToDisplayNode(UIView * _Nullable view);
/**
Given a display node, traverses up the layer tree hierarchy, returning the first display node that passes block.
*/
extern id ASDisplayNodeFind(ASDisplayNode * _Nullable node, BOOL (^block)(ASDisplayNode *node));
/**
Given a display node, traverses up the layer tree hierarchy, returning the first display node of kind class.
*/
extern id ASDisplayNodeFindClass(ASDisplayNode *start, Class c);
/**
Given a display node, collects all descendents. This is a specialization of ASCollectContainer() that walks the Core Animation layer tree as opposed to the display node tree, thus supporting non-continuous display node hierarchies.
*/
extern NSArray<ASDisplayNode *> *ASCollectDisplayNodes(ASDisplayNode *node);
/**
Given a display node, traverses down the node hierarchy, returning all the display nodes that pass the block.
*/
extern NSArray<ASDisplayNode *> *ASDisplayNodeFindAllSubnodes(ASDisplayNode *start, BOOL (^block)(ASDisplayNode *node));
/**
Given a display node, traverses down the node hierarchy, returning all the display nodes of kind class.
*/
extern NSArray<ASDisplayNode *> *ASDisplayNodeFindAllSubnodesOfClass(ASDisplayNode *start, Class c);
/**
Given a display node, traverses down the node hierarchy, returning the depth-first display node that pass the block.
*/
extern __kindof ASDisplayNode * ASDisplayNodeFindFirstSubnode(ASDisplayNode *start, BOOL (^block)(ASDisplayNode *node));
/**
Given a display node, traverses down the node hierarchy, returning the depth-first display node of kind class.
*/
extern __kindof ASDisplayNode * ASDisplayNodeFindFirstSubnodeOfClass(ASDisplayNode *start, Class c);
extern UIColor *ASDisplayNodeDefaultPlaceholderColor();
extern UIColor *ASDisplayNodeDefaultTintColor();
/**
Disable willAppear / didAppear / didDisappear notifications for a sub-hierarchy, then re-enable when done. Nested calls are supported.
*/
extern void ASDisplayNodeDisableHierarchyNotifications(ASDisplayNode *node);
extern void ASDisplayNodeEnableHierarchyNotifications(ASDisplayNode *node);
ASDISPLAYNODE_EXTERN_C_END
NS_ASSUME_NONNULL_END