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8986838b48
* Add move detection and support to ASLayoutTransition ...and NSArray+Diffing. Add some tests. * Update CHANGELOG.md * Update CHANGELOG.md * Update ASLayout+IGListKit.h * Update ASLayout+IGListKit.mm * Use std collections to avoid NSNumber boxing * Update ASLayoutTransition.mm * Code review updates. * Use `unordered_multimap` on stack instead of unordered_map<id,queue> on heap * Remove notFound BOOL (use NSNotFound sentinel value) and put some vars inside the if (insertions/moves) loop * Don't copy defaultCompare block (redundant under ARC) * Whitespace * Remove unneeded mutableCopy-s in ArrayDiffingTests * Code review updates. * Type _subnodeMoves pair.first to ASDisplayNode * instead of id * C++ enumeration * unowned refs for adding previousLayout nodes to _subnodeMoves * Remove unreleated ASDynamicCast that is probably right though * Add commentary to NSArray+Diffing.h; make multimap elements unowned * Use std::make_pair, optimize ASLayout+IGListKit * Oops I thought I had added these headers but nope * Simplify simplify * Diff subnodes instead of sublayouts * Another randomized test with actual ASLayouts
107 lines
2.9 KiB
Objective-C
107 lines
2.9 KiB
Objective-C
//
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// ASLayoutTransition.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 <AsyncDisplayKit/ASDimension.h>
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#import <AsyncDisplayKit/_ASTransitionContext.h>
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#import <AsyncDisplayKit/ASDisplayNodeLayout.h>
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#import <AsyncDisplayKit/ASBaseDefines.h>
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#import <AsyncDisplayKit/ASDisplayNode.h>
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#import <AsyncDisplayKit/ASLayoutSpec.h>
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#import <memory>
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NS_ASSUME_NONNULL_BEGIN
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#pragma mark - ASLayoutElementTransition
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/**
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* Objects conform to this project returns if it's possible to layout asynchronous
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*/
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@protocol ASLayoutElementTransition <NSObject>
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/**
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* @abstract Returns if the layoutElement can be used to layout in an asynchronous way on a background thread.
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*/
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@property (nonatomic, readonly) BOOL canLayoutAsynchronous;
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@end
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@interface ASDisplayNode () <ASLayoutElementTransition>
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@end
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@interface ASLayoutSpec () <ASLayoutElementTransition>
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@end
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#pragma mark - ASLayoutTransition
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AS_SUBCLASSING_RESTRICTED
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@interface ASLayoutTransition : NSObject <_ASTransitionContextLayoutDelegate>
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/**
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* Node to apply layout transition on
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*/
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@property (nonatomic, weak, readonly) ASDisplayNode *node;
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/**
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* Previous layout to transition from
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*/
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@property (nonatomic, readonly) std::shared_ptr<ASDisplayNodeLayout> previousLayout;
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/**
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* Pending layout to transition to
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*/
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@property (nonatomic, readonly) std::shared_ptr<ASDisplayNodeLayout> pendingLayout;
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/**
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* Returns if the layout transition needs to happen synchronously
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*/
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@property (nonatomic, readonly) BOOL isSynchronous;
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/**
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* Returns a newly initialized layout transition
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*/
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- (instancetype)initWithNode:(ASDisplayNode *)node
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pendingLayout:(std::shared_ptr<ASDisplayNodeLayout>)pendingLayout
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previousLayout:(std::shared_ptr<ASDisplayNodeLayout>)previousLayout NS_DESIGNATED_INITIALIZER;
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/**
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* Insert and remove subnodes that were added or removed between the previousLayout and the pendingLayout
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*/
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- (void)commitTransition;
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/**
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* Insert all new subnodes that were added and move the subnodes that moved between the previous layout and
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* the pending layout.
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*/
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- (void)applySubnodeInsertionsAndMoves;
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/**
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* Remove all subnodes that are removed between the previous layout and the pending layout
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*/
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- (void)applySubnodeRemovals;
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@end
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@interface ASLayoutTransition (Unavailable)
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- (instancetype)init __unavailable;
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@end
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NS_ASSUME_NONNULL_END
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