/*
 * 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 "SDWebImageCompat.h"
#import "SDWebImageManager.h"

/**
 * Usage with a UITableViewCell sub-class:
 *
 * @code

#import <SDWebImage/UIImageView+WebCache.h>

...

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *MyIdentifier = @"MyIdentifier";
 
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:MyIdentifier];
 
    if (cell == nil) {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:MyIdentifier];
    }
 
    // Here we use the provided sd_setImageWithURL:placeholderImage: method to load the web image
    // Ensure you use a placeholder image otherwise cells will be initialized with no image
    [cell.imageView sd_setImageWithURL:[NSURL URLWithString:@"http://example.com/image.jpg"]
                      placeholderImage:[UIImage imageNamed:@"placeholder"]];
 
    cell.textLabel.text = @"My Text";
    return cell;
}

 * @endcode
 */

/**
 * Integrates SDWebImage async downloading and caching of remote images with UIImageView.
 */
@interface UIImageView (WebCache)

/**
 * Set the imageView `image` with an `url`.
 *
 * The download is asynchronous and cached.
 *
 * @param url The url for the image.
 */
- (void)sd_setImageWithURL:(nullable NSURL *)url NS_REFINED_FOR_SWIFT;

/**
 * Set the imageView `image` with an `url` and a placeholder.
 *
 * The download is asynchronous and cached.
 *
 * @param url         The url for the image.
 * @param placeholder The image to be set initially, until the image request finishes.
 * @see sd_setImageWithURL:placeholderImage:options:
 */
- (void)sd_setImageWithURL:(nullable NSURL *)url
          placeholderImage:(nullable UIImage *)placeholder NS_REFINED_FOR_SWIFT;

/**
 * Set the imageView `image` with an `url`, placeholder and custom options.
 *
 * The download is asynchronous and cached.
 *
 * @param url         The url for the image.
 * @param placeholder The image to be set initially, until the image request finishes.
 * @param options     The options to use when downloading the image. @see SDWebImageOptions for the possible values.
 */
- (void)sd_setImageWithURL:(nullable NSURL *)url
          placeholderImage:(nullable UIImage *)placeholder
                   options:(SDWebImageOptions)options NS_REFINED_FOR_SWIFT;

/**
 * Set the imageView `image` with an `url`, placeholder, custom options and context.
 *
 * The download is asynchronous and cached.
 *
 * @param url         The url for the image.
 * @param placeholder The image to be set initially, until the image request finishes.
 * @param options     The options to use when downloading the image. @see SDWebImageOptions for the possible values.
 * @param context     A context contains different options to perform specify changes or processes, see `SDWebImageContextOption`. This hold the extra objects which `options` enum can not hold.
 */
- (void)sd_setImageWithURL:(nullable NSURL *)url
          placeholderImage:(nullable UIImage *)placeholder
                   options:(SDWebImageOptions)options
                   context:(nullable SDWebImageContext *)context;

/**
 * Set the imageView `image` with an `url`.
 *
 * The download is asynchronous and cached.
 *
 * @param url            The url for the image.
 * @param completedBlock A block called when operation has been completed. This block has no return value
 *                       and takes the requested UIImage as first parameter. In case of error the image parameter
 *                       is nil and the second parameter may contain an NSError. The third parameter is a Boolean
 *                       indicating if the image was retrieved from the local cache or from the network.
 *                       The fourth parameter is the original image url.
 */
- (void)sd_setImageWithURL:(nullable NSURL *)url
                 completed:(nullable SDExternalCompletionBlock)completedBlock;

/**
 * Set the imageView `image` with an `url`, placeholder.
 *
 * The download is asynchronous and cached.
 *
 * @param url            The url for the image.
 * @param placeholder    The image to be set initially, until the image request finishes.
 * @param completedBlock A block called when operation has been completed. This block has no return value
 *                       and takes the requested UIImage as first parameter. In case of error the image parameter
 *                       is nil and the second parameter may contain an NSError. The third parameter is a Boolean
 *                       indicating if the image was retrieved from the local cache or from the network.
 *                       The fourth parameter is the original image url.
 */
- (void)sd_setImageWithURL:(nullable NSURL *)url
          placeholderImage:(nullable UIImage *)placeholder
                 completed:(nullable SDExternalCompletionBlock)completedBlock NS_REFINED_FOR_SWIFT;

/**
 * Set the imageView `image` with an `url`, placeholder and custom options.
 *
 * The download is asynchronous and cached.
 *
 * @param url            The url for the image.
 * @param placeholder    The image to be set initially, until the image request finishes.
 * @param options        The options to use when downloading the image. @see SDWebImageOptions for the possible values.
 * @param completedBlock A block called when operation has been completed. This block has no return value
 *                       and takes the requested UIImage as first parameter. In case of error the image parameter
 *                       is nil and the second parameter may contain an NSError. The third parameter is a Boolean
 *                       indicating if the image was retrieved from the local cache or from the network.
 *                       The fourth parameter is the original image url.
 */
- (void)sd_setImageWithURL:(nullable NSURL *)url
          placeholderImage:(nullable UIImage *)placeholder
                   options:(SDWebImageOptions)options
                 completed:(nullable SDExternalCompletionBlock)completedBlock;

/**
 * Set the imageView `image` with an `url`, placeholder and custom options.
 *
 * The download is asynchronous and cached.
 *
 * @param url            The url for the image.
 * @param placeholder    The image to be set initially, until the image request finishes.
 * @param options        The options to use when downloading the image. @see SDWebImageOptions for the possible values.
 * @param progressBlock  A block called while image is downloading
 *                       @note the progress block is executed on a background queue
 * @param completedBlock A block called when operation has been completed. This block has no return value
 *                       and takes the requested UIImage as first parameter. In case of error the image parameter
 *                       is nil and the second parameter may contain an NSError. The third parameter is a Boolean
 *                       indicating if the image was retrieved from the local cache or from the network.
 *                       The fourth parameter is the original image url.
 */
- (void)sd_setImageWithURL:(nullable NSURL *)url
          placeholderImage:(nullable UIImage *)placeholder
                   options:(SDWebImageOptions)options
                  progress:(nullable SDImageLoaderProgressBlock)progressBlock
                 completed:(nullable SDExternalCompletionBlock)completedBlock;

/**
 * Set the imageView `image` with an `url`, placeholder, custom options and context.
 *
 * The download is asynchronous and cached.
 *
 * @param url            The url for the image.
 * @param placeholder    The image to be set initially, until the image request finishes.
 * @param options        The options to use when downloading the image. @see SDWebImageOptions for the possible values.
 * @param context        A context contains different options to perform specify changes or processes, see `SDWebImageContextOption`. This hold the extra objects which `options` enum can not hold.
 * @param progressBlock  A block called while image is downloading
 *                       @note the progress block is executed on a background queue
 * @param completedBlock A block called when operation has been completed. This block has no return value
 *                       and takes the requested UIImage as first parameter. In case of error the image parameter
 *                       is nil and the second parameter may contain an NSError. The third parameter is a Boolean
 *                       indicating if the image was retrieved from the local cache or from the network.
 *                       The fourth parameter is the original image url.
 */
- (void)sd_setImageWithURL:(nullable NSURL *)url
          placeholderImage:(nullable UIImage *)placeholder
                   options:(SDWebImageOptions)options
                   context:(nullable SDWebImageContext *)context
                  progress:(nullable SDImageLoaderProgressBlock)progressBlock
                 completed:(nullable SDExternalCompletionBlock)completedBlock;

@end
