SDWebImagePrefetcher.h

/*
 * This file is part of the SDWebImage package.
 * (c) Olivier Poitrey <rs@dailymotion.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

#import <Foundation/Foundation.h>
#import "SDWebImageManager.h"

@class SDWebImagePrefetcher;

@protocol SDWebImagePrefetcherDelegate <NSObject>

@optional

- (void)imagePrefetcher:(SDWebImagePrefetcher *)imagePrefetcher didPrefetchURL:(NSURL *)imageURL finishedCount:(NSUInteger)finishedCount totalCount:(NSUInteger)totalCount;

- (void)imagePrefetcher:(SDWebImagePrefetcher *)imagePrefetcher didFinishWithTotalCount:(NSUInteger)totalCount skippedCount:(NSUInteger)skippedCount;

@end

typedef void(^SDWebImagePrefetcherProgressBlock)(NSUInteger noOfFinishedUrls, NSUInteger noOfTotalUrls);
typedef void(^SDWebImagePrefetcherCompletionBlock)(NSUInteger noOfFinishedUrls, NSUInteger noOfSkippedUrls);

@interface SDWebImagePrefetcher : NSObject

@property (strong, nonatomic, readonly) SDWebImageManager *manager;

@property (nonatomic, assign) NSUInteger maxConcurrentDownloads;

@property (nonatomic, assign) SDWebImageOptions options;

@property (nonatomic, assign) dispatch_queue_t prefetcherQueue;

@property (weak, nonatomic) id <SDWebImagePrefetcherDelegate> delegate;

+ (SDWebImagePrefetcher *)sharedImagePrefetcher;

- (void)prefetchURLs:(NSArray *)urls;

- (void)prefetchURLs:(NSArray *)urls progress:(SDWebImagePrefetcherProgressBlock)progressBlock completed:(SDWebImagePrefetcherCompletionBlock)completionBlock;

- (void)cancelPrefetching;


@end