Swiftgram/Source/Details/_ASCollectionReusableView.mm
Adlai Holler d0ba092a77
Convert the codebase to Objective-C++ (#1206)
* Convert the codebase to Objective-C++ throughout. One language is better than two.

* Put it back

* Fix linker

* Point explicitly to updated Weaver to unblock build

* Revert "Point explicitly to updated Weaver to unblock build"

This reverts commit fdc25296e8794d4e6e56c35f5fe6da2be3f71dbc.

* Revert "Fix linker"

This reverts commit 7be25f91519b8497ef42de79f115bcfbdb965c39.

* Add in the frameworks

* no message

* Address spec lint warnings

* Fix tvos build

* Put that back

* Address Michael's review

* Add comment to kick CI
2018-11-02 12:04:14 -07:00

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//
// _ASCollectionReusableView.mm
// Texture
//
// Copyright (c) Facebook, Inc. and its affiliates. All rights reserved.
// Changes after 4/13/2017 are: Copyright (c) Pinterest, Inc. All rights reserved.
// Licensed under Apache 2.0: http://www.apache.org/licenses/LICENSE-2.0
//
#import <AsyncDisplayKit/_ASCollectionReusableView.h>
#import <AsyncDisplayKit/ASCellNode+Internal.h>
#import <AsyncDisplayKit/ASCollectionElement.h>
@implementation _ASCollectionReusableView
- (ASCellNode *)node
{
return self.element.node;
}
- (void)setElement:(ASCollectionElement *)element
{
ASDisplayNodeAssertMainThread();
element.node.layoutAttributes = _layoutAttributes;
_element = element;
}
- (void)setLayoutAttributes:(UICollectionViewLayoutAttributes *)layoutAttributes
{
_layoutAttributes = layoutAttributes;
self.node.layoutAttributes = layoutAttributes;
}
- (void)prepareForReuse
{
self.layoutAttributes = nil;
// Need to clear element before UIKit calls setSelected:NO / setHighlighted:NO on its cells
self.element = nil;
[super prepareForReuse];
}
/**
* In the initial case, this is called by UICollectionView during cell dequeueing, before
* we get a chance to assign a node to it, so we must be sure to set these layout attributes
* on our node when one is next assigned to us in @c setNode: . Since there may be cases when we _do_ already
* have our node assigned e.g. during a layout update for existing cells, we also attempt
* to update it now.
*/
- (void)applyLayoutAttributes:(UICollectionViewLayoutAttributes *)layoutAttributes
{
self.layoutAttributes = layoutAttributes;
}
/**
* Keep our node filling our content view.
*/
- (void)layoutSubviews
{
[super layoutSubviews];
self.node.frame = self.bounds;
}
@end
/**
* A category that makes _ASCollectionReusableView conform to IGListBindable.
*
* We don't need to do anything to bind the view model the cell node
* serves the same purpose.
*/
#if __has_include(<IGListKit/IGListBindable.h>)
#import <IGListKit/IGListBindable.h>
@interface _ASCollectionReusableView (IGListBindable) <IGListBindable>
@end
@implementation _ASCollectionReusableView (IGListBindable)
- (void)bindViewModel:(id)viewModel
{
// nop
}
@end
#endif