//
//  UICollectionViewCell.h
//  UIKit
//
//  Copyright (c) 2011-2015 Apple Inc. All rights reserved.
//

#import <UIKit/UIView.h>
#import <UIKit/UIKitDefines.h>
#import <UIKit/UICollectionView.h>

NS_ASSUME_NONNULL_BEGIN

@class UICollectionViewLayout;
@class UICollectionView;
@class UICollectionViewLayoutAttributes;
@class UILongPressGestureRecognizer;

NS_CLASS_AVAILABLE_IOS(6_0) @interface UICollectionReusableView : UIView

@property (nonatomic, readonly, copy, nullable) NSString *reuseIdentifier;

// Override point.
// Called by the collection view before the instance is returned from the reuse queue.
// Subclassers must call super.
- (void)prepareForReuse;

// Classes that want to support custom layout attributes specific to a given UICollectionViewLayout subclass can apply them here.
// This allows the view to work in conjunction with a layout class that returns a custom subclass of UICollectionViewLayoutAttributes from -layoutAttributesForItem: or the corresponding layoutAttributesForHeader/Footer methods.
// -applyLayoutAttributes: is then called after the view is added to the collection view and just before the view is returned from the reuse queue.
// Note that -applyLayoutAttributes: is only called when attributes change, as defined by -isEqual:.
- (void)applyLayoutAttributes:(UICollectionViewLayoutAttributes *)layoutAttributes;

// Override these methods to provide custom UI for specific layouts.
- (void)willTransitionFromLayout:(UICollectionViewLayout *)oldLayout toLayout:(UICollectionViewLayout *)newLayout;
- (void)didTransitionFromLayout:(UICollectionViewLayout *)oldLayout toLayout:(UICollectionViewLayout *)newLayout;

- (UICollectionViewLayoutAttributes *)preferredLayoutAttributesFittingAttributes:(UICollectionViewLayoutAttributes *)layoutAttributes NS_AVAILABLE_IOS(8_0);

@end

NS_CLASS_AVAILABLE_IOS(6_0) @interface UICollectionViewCell : UICollectionReusableView

@property (nonatomic, readonly) UIView *contentView; // add custom subviews to the cell's contentView

// Cells become highlighted when the user touches them.
// The selected state is toggled when the user lifts up from a highlighted cell.
// Override these methods to provide custom UI for a selected or highlighted state.
// The collection view may call the setters inside an animation block.
@property (nonatomic, getter=isSelected) BOOL selected;
@property (nonatomic, getter=isHighlighted) BOOL highlighted;

// The background view is a subview behind all other views.
// If selectedBackgroundView is different than backgroundView, it will be placed above the background view and animated in on selection.
@property (nonatomic, strong, nullable) UIView *backgroundView;
@property (nonatomic, strong, nullable) UIView *selectedBackgroundView;

@end

NS_ASSUME_NONNULL_END