// UIButton+AFNetworking.m
// Copyright (c) 2011–2015 Alamofire Software Foundation (http://alamofire.org/)
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
#import "UIButton+AFNetworking.h"
#import <objc/runtime.h>
#if defined(__IPHONE_OS_VERSION_MIN_REQUIRED)
#import "AFURLResponseSerialization.h"
#import "AFHTTPRequestOperation.h"
#import "UIImageView+AFNetworking.h"
@interface UIButton (_AFNetworking)
@end
@implementation UIButton (_AFNetworking)
+ (NSOperationQueue *)af_sharedImageRequestOperationQueue {
static NSOperationQueue *_af_sharedImageRequestOperationQueue = nil;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
_af_sharedImageRequestOperationQueue = [[NSOperationQueue alloc] init];
_af_sharedImageRequestOperationQueue.maxConcurrentOperationCount = NSOperationQueueDefaultMaxConcurrentOperationCount;
});
return _af_sharedImageRequestOperationQueue;
}
#pragma mark -
static char AFImageRequestOperationNormal;
static char AFImageRequestOperationHighlighted;
static char AFImageRequestOperationSelected;
static char AFImageRequestOperationDisabled;
static const char * af_imageRequestOperationKeyForState(UIControlState state) {
switch (state) {
case UIControlStateHighlighted:
return &AFImageRequestOperationHighlighted;
case UIControlStateSelected:
return &AFImageRequestOperationSelected;
case UIControlStateDisabled:
return &AFImageRequestOperationDisabled;
case UIControlStateNormal:
default:
return &AFImageRequestOperationNormal;
}
}
- (AFHTTPRequestOperation *)af_imageRequestOperationForState:(UIControlState)state {
return (AFHTTPRequestOperation *)objc_getAssociatedObject(self, af_imageRequestOperationKeyForState(state));
}
- (void)af_setImageRequestOperation:(AFHTTPRequestOperation *)imageRequestOperation
forState:(UIControlState)state
{
objc_setAssociatedObject(self, af_imageRequestOperationKeyForState(state), imageRequestOperation, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}
#pragma mark -
static char AFBackgroundImageRequestOperationNormal;
static char AFBackgroundImageRequestOperationHighlighted;
static char AFBackgroundImageRequestOperationSelected;
static char AFBackgroundImageRequestOperationDisabled;
static const char * af_backgroundImageRequestOperationKeyForState(UIControlState state) {
switch (state) {
case UIControlStateHighlighted:
return &AFBackgroundImageRequestOperationHighlighted;
case UIControlStateSelected:
return &AFBackgroundImageRequestOperationSelected;
case UIControlStateDisabled:
return &AFBackgroundImageRequestOperationDisabled;
case UIControlStateNormal:
default:
return &AFBackgroundImageRequestOperationNormal;
}
}
- (AFHTTPRequestOperation *)af_backgroundImageRequestOperationForState:(UIControlState)state {
return (AFHTTPRequestOperation *)objc_getAssociatedObject(self, af_backgroundImageRequestOperationKeyForState(state));
}
- (void)af_setBackgroundImageRequestOperation:(AFHTTPRequestOperation *)imageRequestOperation
forState:(UIControlState)state
{
objc_setAssociatedObject(self, af_backgroundImageRequestOperationKeyForState(state), imageRequestOperation, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}
@end
#pragma mark -
@implementation UIButton (AFNetworking)
+ (id <AFImageCache>)sharedImageCache {
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wgnu"
return objc_getAssociatedObject(self, @selector(sharedImageCache)) ?: [UIImageView sharedImageCache];
#pragma clang diagnostic pop
}
+ (void)setSharedImageCache:(__nullable id <AFImageCache>)imageCache {
objc_setAssociatedObject(self, @selector(sharedImageCache), imageCache, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}
#pragma mark -
- (id <AFURLResponseSerialization>)imageResponseSerializer {
static id <AFURLResponseSerialization> _af_defaultImageResponseSerializer = nil;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
_af_defaultImageResponseSerializer = [AFImageResponseSerializer serializer];
});
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wgnu"
return objc_getAssociatedObject(self, @selector(imageResponseSerializer)) ?: _af_defaultImageResponseSerializer;
#pragma clang diagnostic pop
}
- (void)setImageResponseSerializer:(id <AFURLResponseSerialization>)serializer {
objc_setAssociatedObject(self, @selector(imageResponseSerializer), serializer, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}
#pragma mark -
- (void)setImageForState:(UIControlState)state
withURL:(NSURL *)url
{
[self setImageForState:state withURL:url placeholderImage:nil];
}
- (void)setImageForState:(UIControlState)state
withURL:(NSURL *)url
placeholderImage:(UIImage *)placeholderImage
{
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
[request addValue:@"image/*" forHTTPHeaderField:@"Accept"];
[self setImageForState:state withURLRequest:request placeholderImage:placeholderImage success:nil failure:nil];
}
- (void)setImageForState:(UIControlState)state
withURLRequest:(NSURLRequest *)urlRequest
placeholderImage:(UIImage *)placeholderImage
success:(void (^)(NSURLRequest *request, NSHTTPURLResponse * __nullable response, UIImage *image))success
failure:(void (^)(NSError *error))failure
{
[self cancelImageRequestOperationForState:state];
UIImage *cachedImage = [[[self class] sharedImageCache] cachedImageForRequest:urlRequest];
if (cachedImage) {
if (success) {
success(urlRequest, nil, cachedImage);
} else {
[self setImage:cachedImage forState:state];
}
[self af_setImageRequestOperation:nil forState:state];
} else {
if (placeholderImage) {
[self setImage:placeholderImage forState:state];
}
__weak __typeof(self)weakSelf = self;
AFHTTPRequestOperation *imageRequestOperation = [[AFHTTPRequestOperation alloc] initWithRequest:urlRequest];
imageRequestOperation.responseSerializer = self.imageResponseSerializer;
[imageRequestOperation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
__strong __typeof(weakSelf)strongSelf = weakSelf;
if ([[urlRequest URL] isEqual:[operation.request URL]]) {
if (success) {
success(operation.request, operation.response, responseObject);
} else if (responseObject) {
[strongSelf setImage:responseObject forState:state];
}
}
[[[strongSelf class] sharedImageCache] cacheImage:responseObject forRequest:urlRequest];
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
if ([[urlRequest URL] isEqual:[operation.request URL]]) {
if (failure) {
failure(error);
}
}
}];
[self af_setImageRequestOperation:imageRequestOperation forState:state];
[[[self class] af_sharedImageRequestOperationQueue] addOperation:imageRequestOperation];
}
}
#pragma mark -
- (void)setBackgroundImageForState:(UIControlState)state
withURL:(NSURL *)url
{
[self setBackgroundImageForState:state withURL:url placeholderImage:nil];
}
- (void)setBackgroundImageForState:(UIControlState)state
withURL:(NSURL *)url
placeholderImage:(UIImage *)placeholderImage
{
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
[request addValue:@"image/*" forHTTPHeaderField:@"Accept"];
[self setBackgroundImageForState:state withURLRequest:request placeholderImage:placeholderImage success:nil failure:nil];
}
- (void)setBackgroundImageForState:(UIControlState)state
withURLRequest:(NSURLRequest *)urlRequest
placeholderImage:(UIImage *)placeholderImage
success:(void (^)(NSURLRequest *request, NSHTTPURLResponse * __nullable response, UIImage *image))success
failure:(void (^)(NSError *error))failure
{
[self cancelBackgroundImageRequestOperationForState:state];
UIImage *cachedImage = [[[self class] sharedImageCache] cachedImageForRequest:urlRequest];
if (cachedImage) {
if (success) {
success(urlRequest, nil, cachedImage);
} else {
[self setBackgroundImage:cachedImage forState:state];
}
[self af_setBackgroundImageRequestOperation:nil forState:state];
} else {
if (placeholderImage) {
[self setBackgroundImage:placeholderImage forState:state];
}
__weak __typeof(self)weakSelf = self;
AFHTTPRequestOperation *backgroundImageRequestOperation = [[AFHTTPRequestOperation alloc] initWithRequest:urlRequest];
backgroundImageRequestOperation.responseSerializer = self.imageResponseSerializer;
[backgroundImageRequestOperation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
__strong __typeof(weakSelf)strongSelf = weakSelf;
if ([[urlRequest URL] isEqual:[operation.request URL]]) {
if (success) {
success(operation.request, operation.response, responseObject);
} else if (responseObject) {
[strongSelf setBackgroundImage:responseObject forState:state];
}
}
[[[strongSelf class] sharedImageCache] cacheImage:responseObject forRequest:urlRequest];
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
if ([[urlRequest URL] isEqual:[operation.request URL]]) {
if (failure) {
failure(error);
}
}
}];
[self af_setBackgroundImageRequestOperation:backgroundImageRequestOperation forState:state];
[[[self class] af_sharedImageRequestOperationQueue] addOperation:backgroundImageRequestOperation];
}
}
#pragma mark -
- (void)cancelImageRequestOperationForState:(UIControlState)state {
[[self af_imageRequestOperationForState:state] cancel];
[self af_setImageRequestOperation:nil forState:state];
}
- (void)cancelBackgroundImageRequestOperationForState:(UIControlState)state {
[[self af_backgroundImageRequestOperationForState:state] cancel];
[self af_setBackgroundImageRequestOperation:nil forState:state];
}
@end
#endif
