//
//  BGSwipeView.h
//  BuguLive
//
//  Created by 朱庆彬 on 2017/8/16.
//  Copyright © 2017年 xfg. All rights reserved.
//

#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wauto-import"
#pragma GCC diagnostic ignored "-Wobjc-missing-property-synthesis"

#import <Availability.h>
#undef weak_delegate
#if __has_feature(objc_arc) && __has_feature(objc_arc_weak)
#define weak_delegate weak
#else
#define weak_delegate unsafe_unretained
#endif

#import <UIKit/UIKit.h>

typedef NS_ENUM(NSUInteger, FWSwipeViewAlignment) {
    FWSwipeViewAlignmentEdge = 0,
    FWSwipeViewAlignmentCenter
};

@protocol FWSwipeViewDataSource
, FWSwipeViewDelegate;

@interface BGSwipeView : UIView

@property (nonatomic, weak_delegate) IBOutlet id<FWSwipeViewDataSource> dataSource;
@property (nonatomic, weak_delegate) IBOutlet id<FWSwipeViewDelegate> delegate;
@property (nonatomic, readonly) NSInteger numberOfItems;
@property (nonatomic, readonly) NSInteger numberOfPages;
@property (nonatomic, readonly) CGSize itemSize;
@property (nonatomic, assign) NSInteger itemsPerPage;
@property (nonatomic, assign) BOOL truncateFinalPage;
@property (nonatomic, strong, readonly) NSArray *indexesForVisibleItems;
@property (nonatomic, strong, readonly) NSArray *visibleItemViews;
@property (nonatomic, strong, readonly) UIView *currentItemView;
@property (nonatomic, assign) NSInteger currentItemIndex;
@property (nonatomic, assign) NSInteger currentPage;
@property (nonatomic, assign) FWSwipeViewAlignment alignment;
@property (nonatomic, assign) CGFloat scrollOffset;
@property (nonatomic, assign, getter=isPagingEnabled) BOOL pagingEnabled;
@property (nonatomic, assign, getter=isScrollEnabled) BOOL scrollEnabled;
@property (nonatomic, assign, getter=isWrapEnabled) BOOL wrapEnabled;
@property (nonatomic, assign) BOOL delaysContentTouches;
@property (nonatomic, assign) BOOL bounces;
@property (nonatomic, assign) float decelerationRate;
@property (nonatomic, assign) CGFloat autoscroll;
@property (nonatomic, readonly, getter=isDragging) BOOL dragging;
@property (nonatomic, readonly, getter=isDecelerating) BOOL decelerating;
@property (nonatomic, readonly, getter=isScrolling) BOOL scrolling;
@property (nonatomic, assign) BOOL defersItemViewLoading;
@property (nonatomic, assign, getter=isVertical) BOOL vertical;

- (void)reloadData;
- (void)reloadItemAtIndex:(NSInteger)index;
- (void)scrollByOffset:(CGFloat)offset duration:(NSTimeInterval)duration;
- (void)scrollToOffset:(CGFloat)offset duration:(NSTimeInterval)duration;
- (void)scrollByNumberOfItems:(NSInteger)itemCount duration:(NSTimeInterval)duration;
- (void)scrollToItemAtIndex:(NSInteger)index duration:(NSTimeInterval)duration;
- (void)scrollToPage:(NSInteger)page duration:(NSTimeInterval)duration;
- (UIView *)itemViewAtIndex:(NSInteger)index;
- (NSInteger)indexOfItemView:(UIView *)view;
- (NSInteger)indexOfItemViewOrSubview:(UIView *)view;

@end

@protocol FWSwipeViewDataSource <NSObject>

- (NSInteger)numberOfItemsInFWSwipeView:(BGSwipeView *)swipeView;
- (UIView *)swipeView:(BGSwipeView *)swipeView viewForItemAtIndex:(NSInteger)index reusingView:(UIView *)view;

@end

@protocol FWSwipeViewDelegate <NSObject>
@optional

- (CGSize)swipeViewItemSize:(BGSwipeView *)swipeView;
- (void)swipeViewDidScroll:(BGSwipeView *)swipeView;
- (void)swipeViewCurrentItemIndexDidChange:(BGSwipeView *)swipeView;
- (void)swipeViewWillBeginDragging:(BGSwipeView *)swipeView;
- (void)swipeViewDidEndDragging:(BGSwipeView *)swipeView willDecelerate:(BOOL)decelerate;
- (void)swipeViewWillBeginDecelerating:(BGSwipeView *)swipeView;
- (void)swipeViewDidEndDecelerating:(BGSwipeView *)swipeView;
- (void)swipeViewDidEndScrollingAnimation:(BGSwipeView *)swipeView;
- (BOOL)swipeView:(BGSwipeView *)swipeView shouldSelectItemAtIndex:(NSInteger)index;
- (void)swipeView:(BGSwipeView *)swipeView didSelectItemAtIndex:(NSInteger)index;

@end

#pragma GCC diagnostic pop