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4d0eeb64d8
* Rejigger visible elements tracking * Put the assertion back * Remove unused stuff * Make it stronk
98 lines
2.6 KiB
Objective-C
98 lines
2.6 KiB
Objective-C
//
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// _ASCollectionReusableView.m
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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 "_ASCollectionReusableView.h"
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#import "ASCellNode+Internal.h"
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#import <AsyncDisplayKit/ASCollectionElement.h>
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#import <AsyncDisplayKit/AsyncDisplayKit.h>
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@implementation _ASCollectionReusableView
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- (ASCellNode *)node
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{
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return self.element.node;
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}
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- (void)setElement:(ASCollectionElement *)element
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{
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ASDisplayNodeAssertMainThread();
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element.node.layoutAttributes = _layoutAttributes;
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_element = element;
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}
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- (void)setLayoutAttributes:(UICollectionViewLayoutAttributes *)layoutAttributes
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{
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_layoutAttributes = layoutAttributes;
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self.node.layoutAttributes = layoutAttributes;
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}
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- (void)prepareForReuse
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{
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self.layoutAttributes = nil;
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// Need to clear element before UIKit calls setSelected:NO / setHighlighted:NO on its cells
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self.element = nil;
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[super prepareForReuse];
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}
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/**
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* In the initial case, this is called by UICollectionView during cell dequeueing, before
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* we get a chance to assign a node to it, so we must be sure to set these layout attributes
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* on our node when one is next assigned to us in @c setNode: . Since there may be cases when we _do_ already
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* have our node assigned e.g. during a layout update for existing cells, we also attempt
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* to update it now.
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*/
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- (void)applyLayoutAttributes:(UICollectionViewLayoutAttributes *)layoutAttributes
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{
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self.layoutAttributes = layoutAttributes;
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}
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/**
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* Keep our node filling our content view.
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*/
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- (void)layoutSubviews
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{
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[super layoutSubviews];
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self.node.frame = self.bounds;
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}
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@end
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/**
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* A category that makes _ASCollectionReusableView conform to IGListBindable.
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*
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* We don't need to do anything to bind the view model – the cell node
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* serves the same purpose.
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*/
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#if __has_include(<IGListKit/IGListBindable.h>)
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#import <IGListKit/IGListBindable.h>
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@interface _ASCollectionReusableView (IGListBindable) <IGListBindable>
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@end
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@implementation _ASCollectionReusableView (IGListBindable)
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- (void)bindViewModel:(id)viewModel
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{
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// nop
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}
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@end
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#endif
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