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[React Native] Update image downloader

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Summary:
Change `RCTImageDownloader` so it stores the `RCTDownloadTaskWrapper` for reuse. Modify `RCTDownloadTaskWrapper` to use associated objects to store the completion/progress blocks.
This commit is contained in:
Alexsander Akers
2015-07-10 09:11:31 -01:00
parent 8e70c7f003
commit 72b50dc32d
4 changed files with 79 additions and 48 deletions
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23
Libraries/Image/RCTImageDownloader.h
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@@ -13,6 +13,7 @@
typedef void (^RCTDataDownloadBlock)(NSData *data, NSError *error);
typedef void (^RCTImageDownloadBlock)(UIImage *image, NSError *error);
typedef void (^RCTImageDownloadCancellationBlock)(void);
@interface RCTImageDownloader : NSObject
@@ -23,9 +24,9 @@ typedef void (^RCTImageDownloadBlock)(UIImage *image, NSError *error);
* will not be executed on the same thread you called the method from, nor on
* the main thread. Returns a token that can be used to cancel the download.
*/
- (id)downloadDataForURL:(NSURL *)url
progressBlock:(RCTDataProgressBlock)progressBlock
block:(RCTDataDownloadBlock)block;
- (RCTImageDownloadCancellationBlock)downloadDataForURL:(NSURL *)url
progressBlock:(RCTDataProgressBlock)progressBlock
block:(RCTDataDownloadBlock)block;
/**
* Downloads an image and decompresses it a the size specified. The compressed
@@ -33,19 +34,19 @@ typedef void (^RCTImageDownloadBlock)(UIImage *image, NSError *error);
* will not be executed on the same thread you called the method from, nor on
* the main thread. Returns a token that can be used to cancel the download.
*/
- (id)downloadImageForURL:(NSURL *)url
size:(CGSize)size
scale:(CGFloat)scale
resizeMode:(UIViewContentMode)resizeMode
backgroundColor:(UIColor *)backgroundColor
progressBlock:(RCTDataProgressBlock)progressBlock
block:(RCTImageDownloadBlock)block;
- (RCTImageDownloadCancellationBlock)downloadImageForURL:(NSURL *)url
size:(CGSize)size
scale:(CGFloat)scale
resizeMode:(UIViewContentMode)resizeMode
backgroundColor:(UIColor *)backgroundColor
progressBlock:(RCTDataProgressBlock)progressBlock
block:(RCTImageDownloadBlock)block;
/**
* Cancel an in-flight download. If multiple requets have been made for the
* same image, only the request that relates to the token passed will be
* cancelled.
*/
- (void)cancelDownload:(id)downloadToken;
- (void)cancelDownload:(RCTImageDownloadCancellationBlock)downloadToken;
@end