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/*
* 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 "SDWebImageManagerDelegate.h"
#import "SDWebImageManager.h"
/**
* Prefetch some URLs in the cache for future use. Images are downloaded in low priority.
*/
@interface SDWebImagePrefetcher : NSObject <SDWebImageManagerDelegate>
{
NSArray *_prefetchURLs;
NSUInteger _skippedCount;
NSUInteger _finishedCount;
NSUInteger _requestedCount;
NSTimeInterval _startedTime;
}
/**
* Maximum number of URLs to prefetch at the same time. Defaults to 3.
*/
@property (nonatomic, assign) NSUInteger maxConcurrentDownloads;
/**
* SDWebImageOptions for prefetcher. Defaults to SDWebImageLowPriority.
*/
@property (nonatomic, assign) SDWebImageOptions options;
/**
* Return the global image prefetcher instance.
*/
+ (SDWebImagePrefetcher *)sharedImagePrefetcher;
/**
* Assign list of URLs to let SDWebImagePrefetcher to queue the prefetching,
* currently one image is downloaded at a time,
* and skips images for failed downloads and proceed to the next image in the list
*
* @param urls list of URLs to prefetch
*/
- (void)prefetchURLs:(NSArray *)urls;
/**
* Remove and cancel queued list
*/
- (void)cancelPrefetching;
@end
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