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101 lines
4.3 KiB
Objective-C
101 lines
4.3 KiB
Objective-C
/* Copyright (c) 2014-present, Facebook, Inc.
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* All rights reserved.
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*
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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 root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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#import <QuartzCore/QuartzCore.h>
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#import <UIKit/UIKit.h>
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#import <AsyncDisplayKit/ASBaseDefines.h>
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#import <AsyncDisplayKit/ASDisplayNode.h>
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ASDISPLAYNODE_EXTERN_C_BEGIN
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/**
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Given a layer, returns the associated display node, if any.
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*/
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extern ASDisplayNode *ASLayerToDisplayNode(CALayer *layer);
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/**
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Given a view, returns the associated display node, if any.
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*/
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extern ASDisplayNode *ASViewToDisplayNode(UIView *view);
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/**
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Given a node, returns the root of the node heirarchy (where supernode == nil)
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*/
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extern ASDisplayNode *ASDisplayNodeUltimateParentOfNode(ASDisplayNode *node);
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/**
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This function will walk the layer heirarchy, spanning discontinuous sections of the node heirarchy (e.g. the layers
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of UIKit intermediate views in UIViewControllers, UITableView, UICollectionView).
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In the event that a node's backing layer is not created yet, the function will only walk the direct subnodes instead
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of forcing the layer heirarchy to be created.
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*/
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extern void ASDisplayNodePerformBlockOnEveryNode(CALayer *layer, ASDisplayNode *node, void(^block)(ASDisplayNode *node));
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/**
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Identical to ASDisplayNodePerformBlockOnEveryNode, except it does not run the block on the
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node provided directly to the function call - only on all descendants.
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*/
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extern void ASDisplayNodePerformBlockOnEverySubnode(ASDisplayNode *node, void(^block)(ASDisplayNode *node));
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/**
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Given a display node, traverses up the layer tree hierarchy, returning the first display node that passes block.
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*/
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extern id ASDisplayNodeFind(ASDisplayNode *node, BOOL (^block)(ASDisplayNode *node));
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/**
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Given a display node, traverses up the layer tree hierarchy, returning the first display node of kind class.
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*/
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extern id ASDisplayNodeFindClass(ASDisplayNode *start, Class c);
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/**
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* Given two nodes, finds their most immediate common parent. Used for geometry conversion methods.
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* NOTE: It is an error to try to convert between nodes which do not share a common ancestor. This behavior is
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* disallowed in UIKit documentation and the behavior is left undefined. The output does not have a rigorously defined
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* failure mode (i.e. returning CGPointZero or returning the point exactly as passed in). Rather than track the internal
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* undefined and undocumented behavior of UIKit in ASDisplayNode, this operation is defined to be incorrect in all
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* circumstances and must be fixed wherever encountered.
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*/
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extern ASDisplayNode *ASDisplayNodeFindClosestCommonAncestor(ASDisplayNode *node1, ASDisplayNode *node2);
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/**
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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-continues display node hierarchies.
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*/
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extern NSArray *ASCollectDisplayNodes(ASDisplayNode *node);
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/**
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Given a display node, traverses down the node hierarchy, returning all the display nodes that pass the block.
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*/
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extern NSArray *ASDisplayNodeFindAllSubnodes(ASDisplayNode *start, BOOL (^block)(ASDisplayNode *node));
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/**
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Given a display node, traverses down the node hierarchy, returning all the display nodes of kind class.
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*/
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extern NSArray *ASDisplayNodeFindAllSubnodesOfClass(ASDisplayNode *start, Class c);
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/**
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Given a display node, traverses down the node hierarchy, returning the depth-first display node that pass the block.
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*/
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extern id ASDisplayNodeFindFirstSubnode(ASDisplayNode *start, BOOL (^block)(ASDisplayNode *node));
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/**
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Given a display node, traverses down the node hierarchy, returning the depth-first display node of kind class.
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*/
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extern id ASDisplayNodeFindFirstSubnodeOfClass(ASDisplayNode *start, Class c);
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extern UIColor *ASDisplayNodeDefaultPlaceholderColor();
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extern UIColor *ASDisplayNodeDefaultTintColor();
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/**
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Disable willAppear / didAppear / didDisappear notifications for a sub-hierarchy, then re-enable when done. Nested calls are supported.
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*/
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extern void ASDisplayNodeDisableHierarchyNotifications(ASDisplayNode *node);
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extern void ASDisplayNodeEnableHierarchyNotifications(ASDisplayNode *node);
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ASDISPLAYNODE_EXTERN_C_END
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