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* [License] Simplify the Texture license to be pure Apache 2 (removing ASDK-Licenses) With permission of the Facebook Open Source team, we are simplifying the Texture license so that clients can rely on the Apache 2 terms that most of Texture is already covered by. This means that code originally forked from AsyncDisplayKit will be re-licensed from "BSD 3-clause + PATENTS v2" to Apache 2 without a PATENTS file. After getting confirmation that the updates to these core files look good, we'll propagate this new license header to all files (in this same PR) and get sign-off from all parties before landing. * [License] Update all Texture source files to be pure Apache 2. * Changelog entry for Apache 2 license update. * Revert "[License] Update all Texture source files to be pure Apache 2." This reverts commit ffa0fbbba9717d871dd16c4b07539f2f8208fc2b. * [License] Update all Texture source files to be pure Apache 2, maintaining copyrights. * [License] Update CONTRIBUTING, README, Podspec & Dangerfile.
89 lines
2.4 KiB
Plaintext
89 lines
2.4 KiB
Plaintext
//
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// ASCollectionElement.mm
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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/ASCollectionElement.h>
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#import <AsyncDisplayKit/ASCellNode+Internal.h>
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#import <mutex>
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@interface ASCollectionElement ()
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/// Required node block used to allocate a cell node. Nil after the first execution.
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@property (nonatomic) ASCellNodeBlock nodeBlock;
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@end
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@implementation ASCollectionElement {
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std::mutex _lock;
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ASCellNode *_node;
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}
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- (instancetype)initWithNodeModel:(id)nodeModel
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nodeBlock:(ASCellNodeBlock)nodeBlock
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supplementaryElementKind:(NSString *)supplementaryElementKind
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constrainedSize:(ASSizeRange)constrainedSize
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owningNode:(id<ASRangeManagingNode>)owningNode
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traitCollection:(ASPrimitiveTraitCollection)traitCollection
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{
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NSAssert(nodeBlock != nil, @"Node block must not be nil");
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self = [super init];
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if (self) {
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_nodeModel = nodeModel;
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_nodeBlock = nodeBlock;
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_supplementaryElementKind = [supplementaryElementKind copy];
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_constrainedSize = constrainedSize;
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_owningNode = owningNode;
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_traitCollection = traitCollection;
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}
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return self;
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}
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- (ASCellNode *)node
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{
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std::lock_guard<std::mutex> l(_lock);
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if (_nodeBlock != nil) {
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ASCellNode *node = _nodeBlock();
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_nodeBlock = nil;
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if (node == nil) {
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ASDisplayNodeFailAssert(@"Node block returned nil node!");
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node = [[ASCellNode alloc] init];
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}
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node.owningNode = _owningNode;
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node.collectionElement = self;
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ASTraitCollectionPropagateDown(node, _traitCollection);
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node.nodeModel = _nodeModel;
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_node = node;
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}
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return _node;
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}
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- (ASCellNode *)nodeIfAllocated
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{
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std::lock_guard<std::mutex> l(_lock);
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return _node;
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}
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- (void)setTraitCollection:(ASPrimitiveTraitCollection)traitCollection
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{
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ASCellNode *nodeIfNeedsPropagation;
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{
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std::lock_guard<std::mutex> l(_lock);
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if (! ASPrimitiveTraitCollectionIsEqualToASPrimitiveTraitCollection(_traitCollection, traitCollection)) {
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_traitCollection = traitCollection;
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nodeIfNeedsPropagation = _node;
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}
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}
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if (nodeIfNeedsPropagation != nil) {
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ASTraitCollectionPropagateDown(nodeIfNeedsPropagation, traitCollection);
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}
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}
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@end
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