text: //
  //  UIImageView+YYWebImage.h
  //  YYKit <https://github.com/ibireme/YYKit>
  //
  //  Created by ibireme on 15/2/23.
  //  Copyright (c) 2015 ibireme.
  //
  //  This source code is licensed under the MIT-style license found in the
  //  LICENSE file in the root directory of this source tree.
  //
  
  #import <UIKit/UIKit.h>
  
  #if __has_include(<YYKit/YYKit.h>)
  #import <YYKit/YYWebImageManager.h>
  #else
  #import "YYWebImageManager.h"
  #endif
  
  /**
   Web image methods for UIImageView.
   */
  @interface UIImageView (YYWebImage)
  
  #pragma mark - image
  
  /**
   Current image URL.
   
   @discussion Set a new value to this property will cancel the previous request 
   operation and create a new request operation to fetch image. Set nil to clear 
   the image and image URL.
   */
  @property (nonatomic, strong) NSURL *imageURL;
  
  /**
   Set the view's `image` with a specified URL.
   
   @param imageURL    The image url (remote or local file path).
   @param placeholder The image to be set initially, until the image request finishes.
   */
  - (void)setImageWithURL:(NSURL *)imageURL placeholder:(UIImage *)placeholder;
  
  /**
   Set the view's `image` with a specified URL.
   
   @param imageURL The image url (remote or local file path).
   @param options  The options to use when request the image.
   */
  - (void)setImageWithURL:(NSURL *)imageURL options:(YYWebImageOptions)options;
  
  /**
   Set the view's `image` with a specified URL.
   
   @param imageURL    The image url (remote or local file path).
   @param placeholder The image to be set initially, until the image request finishes.
   @param options     The options to use when request the image.
   @param completion  The block invoked (on main thread) when image request completed.
   */
  - (void)setImageWithURL:(NSURL *)imageURL
              placeholder:(UIImage *)placeholder
                  options:(YYWebImageOptions)options
               completion:(YYWebImageCompletionBlock)completion;
  
  /**
   Set the view's `image` with a specified URL.
   
   @param imageURL    The image url (remote or local file path).
   @param placeholder The image to be set initially, until the image request finishes.
   @param options     The options to use when request the image.
   @param progress    The block invoked (on main thread) during image request.
   @param transform   The block invoked (on background thread) to do additional image process.
   @param completion  The block invoked (on main thread) when image request completed.
   */
  - (void)setImageWithURL:(NSURL *)imageURL
              placeholder:(UIImage *)placeholder
                  options:(YYWebImageOptions)options
                 progress:(YYWebImageProgressBlock)progress
                transform:(YYWebImageTransformBlock)transform
               completion:(YYWebImageCompletionBlock)completion;
  
  /**
   Set the view's `image` with a specified URL.
   
   @param imageURL    The image url (remote or local file path).
   @param placeholder he image to be set initially, until the image request finishes.
   @param options     The options to use when request the image.
   @param manager     The manager to create image request operation.
   @param progress    The block invoked (on main thread) during image request.
   @param transform   The block invoked (on background thread) to do additional image process.
   @param completion  The block invoked (on main thread) when image request completed.
   */
  - (void)setImageWithURL:(NSURL *)imageURL
              placeholder:(UIImage *)placeholder
                  options:(YYWebImageOptions)options
                  manager:(YYWebImageManager *)manager
                 progress:(YYWebImageProgressBlock)progress
                transform:(YYWebImageTransformBlock)transform
               completion:(YYWebImageCompletionBlock)completion;
  
  /**
   Cancel the current image request.
   */
  - (void)cancelCurrentImageRequest;
  
  
  
  #pragma mark - highlight image
  
  /**
   Current highlighted image URL.
   
   @discussion Set a new value to this property will cancel the previous request
   operation and create a new request operation to fetch image. Set nil to clear
   the highlighted image and image URL.
   */
  @property (nonatomic, strong) NSURL *highlightedImageURL;
  
  /**
   Set the view's `highlightedImage` with a specified URL.
   
   @param imageURL    The image url (remote or local file path).
   @param placeholder The image to be set initially, until the image request finishes.
   */
  - (void)setHighlightedImageWithURL:(NSURL *)imageURL placeholder:(UIImage *)placeholder;
  
  /**
   Set the view's `highlightedImage` with a specified URL.
   
   @param imageURL The image url (remote or local file path).
   @param options  The options to use when request the image.
   */
  - (void)setHighlightedImageWithURL:(NSURL *)imageURL options:(YYWebImageOptions)options;
  
  /**
   Set the view's `highlightedImage` with a specified URL.
   
   @param imageURL    The image url (remote or local file path).
   @param placeholder The image to be set initially, until the image request finishes.
   @param options     The options to use when request the image.
   @param completion  The block invoked (on main thread) when image request completed.
   */
  - (void)setHighlightedImageWithURL:(NSURL *)imageURL
                         placeholder:(UIImage *)placeholder
                             options:(YYWebImageOptions)options
                          completion:(YYWebImageCompletionBlock)completion;
  
  /**
   Set the view's `highlightedImage` with a specified URL.
   
   @param imageURL    The image url (remote or local file path).
   @param placeholder The image to be set initially, until the image request finishes.
   @param options     The options to use when request the image.
   @param progress    The block invoked (on main thread) during image request.
   @param transform   The block invoked (on background thread) to do additional image process.
   @param completion  The block invoked (on main thread) when image request completed.
   */
  - (void)setHighlightedImageWithURL:(NSURL *)imageURL
                         placeholder:(UIImage *)placeholder
                             options:(YYWebImageOptions)options
                            progress:(YYWebImageProgressBlock)progress
                           transform:(YYWebImageTransformBlock)transform
                          completion:(YYWebImageCompletionBlock)completion;
  
  /**
   Set the view's `highlightedImage` with a specified URL.
   
   @param imageURL    The image url (remote or local file path).
   @param placeholder he image to be set initially, until the image request finishes.
   @param options     The options to use when request the image.
   @param manager     The manager to create image request operation.
   @param progress    The block invoked (on main thread) during image request.
   @param transform   The block invoked (on background thread) to do additional image process.
   @param completion  The block invoked (on main thread) when image request completed.
   */
  - (void)setHighlightedImageWithURL:(NSURL *)imageURL
                         placeholder:(UIImage *)placeholder
                             options:(YYWebImageOptions)options
                             manager:(YYWebImageManager *)manager
                            progress:(YYWebImageProgressBlock)progress
                           transform:(YYWebImageTransformBlock)transform
                          completion:(YYWebImageCompletionBlock)completion;
  
  /**
   Cancel the current highlighed image request.
   */
  - (void)cancelCurrentHighlightedImageRequest;
  
  @end
  