/*
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* This file is part of the SDWebImage package.
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* (c) Olivier Poitrey <rs@dailymotion.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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#import "SDWebImageCompat.h"
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#import "SDWebImageOperation.h"
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/**
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These methods are used to support canceling for UIView image loading, it's designed to be used internal but not external.
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All the stored operations are weak, so it will be dealloced after image loading finished. If you need to store operations, use your own class to keep a strong reference for them.
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*/
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@interface UIView (WebCacheOperation)
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/**
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* Get the image load operation for key
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*
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* @param key key for identifying the operations
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* @return the image load operation
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* @note If key is nil, means using the NSStringFromClass(self.class) instead, match the behavior of `operation key`
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*/
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- (nullable id<SDWebImageOperation>)sd_imageLoadOperationForKey:(nullable NSString *)key;
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/**
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* Set the image load operation (storage in a UIView based weak map table)
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*
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* @param operation the operation, should not be nil or no-op will perform
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* @param key key for storing the operation
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* @note If key is nil, means using the NSStringFromClass(self.class) instead, match the behavior of `operation key`
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*/
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- (void)sd_setImageLoadOperation:(nullable id<SDWebImageOperation>)operation forKey:(nullable NSString *)key;
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/**
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* Cancel the operation for the current UIView and key
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*
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* @param key key for identifying the operations
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* @note If key is nil, means using the NSStringFromClass(self.class) instead, match the behavior of `operation key`
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*/
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- (void)sd_cancelImageLoadOperationWithKey:(nullable NSString *)key;
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/**
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* Just remove the operation corresponding to the current UIView and key without cancelling them
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*
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* @param key key for identifying the operations.
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* @note If key is nil, means using the NSStringFromClass(self.class) instead, match the behavior of `operation key`
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*/
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- (void)sd_removeImageLoadOperationWithKey:(nullable NSString *)key;
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@end
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