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Pods/AFNetworking/UIKit+AFNetworking/UIProgressView+AFNetworking.m 5.2 KB
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  // UIProgressView+AFNetworking.m
  // Copyright (c) 2011–2016 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 "UIProgressView+AFNetworking.h"
  
  #import <objc/runtime.h>
  
  #if TARGET_OS_IOS || TARGET_OS_TV
  
  #import "AFURLSessionManager.h"
  
  static void * AFTaskCountOfBytesSentContext = &AFTaskCountOfBytesSentContext;
  static void * AFTaskCountOfBytesReceivedContext = &AFTaskCountOfBytesReceivedContext;
  
  #pragma mark -
  
  @implementation UIProgressView (AFNetworking)
  
  - (BOOL)af_uploadProgressAnimated {
      return [(NSNumber *)objc_getAssociatedObject(self, @selector(af_uploadProgressAnimated)) boolValue];
  }
  
  - (void)af_setUploadProgressAnimated:(BOOL)animated {
      objc_setAssociatedObject(self, @selector(af_uploadProgressAnimated), @(animated), OBJC_ASSOCIATION_RETAIN_NONATOMIC);
  }
  
  - (BOOL)af_downloadProgressAnimated {
      return [(NSNumber *)objc_getAssociatedObject(self, @selector(af_downloadProgressAnimated)) boolValue];
  }
  
  - (void)af_setDownloadProgressAnimated:(BOOL)animated {
      objc_setAssociatedObject(self, @selector(af_downloadProgressAnimated), @(animated), OBJC_ASSOCIATION_RETAIN_NONATOMIC);
  }
  
  #pragma mark -
  
  - (void)setProgressWithUploadProgressOfTask:(NSURLSessionUploadTask *)task
                                     animated:(BOOL)animated
  {
      if (task.state == NSURLSessionTaskStateCompleted) {
          return;
      }
      
      [task addObserver:self forKeyPath:@"state" options:(NSKeyValueObservingOptions)0 context:AFTaskCountOfBytesSentContext];
      [task addObserver:self forKeyPath:@"countOfBytesSent" options:(NSKeyValueObservingOptions)0 context:AFTaskCountOfBytesSentContext];
  
      [self af_setUploadProgressAnimated:animated];
  }
  
  - (void)setProgressWithDownloadProgressOfTask:(NSURLSessionDownloadTask *)task
                                       animated:(BOOL)animated
  {
      if (task.state == NSURLSessionTaskStateCompleted) {
          return;
      }
      
      [task addObserver:self forKeyPath:@"state" options:(NSKeyValueObservingOptions)0 context:AFTaskCountOfBytesReceivedContext];
      [task addObserver:self forKeyPath:@"countOfBytesReceived" options:(NSKeyValueObservingOptions)0 context:AFTaskCountOfBytesReceivedContext];
  
      [self af_setDownloadProgressAnimated:animated];
  }
  
  #pragma mark - NSKeyValueObserving
  
  - (void)observeValueForKeyPath:(NSString *)keyPath
                        ofObject:(id)object
                          change:(__unused NSDictionary *)change
                         context:(void *)context
  {
      if (context == AFTaskCountOfBytesSentContext || context == AFTaskCountOfBytesReceivedContext) {
          if ([keyPath isEqualToString:NSStringFromSelector(@selector(countOfBytesSent))]) {
              if ([object countOfBytesExpectedToSend] > 0) {
                  dispatch_async(dispatch_get_main_queue(), ^{
                      [self setProgress:[object countOfBytesSent] / ([object countOfBytesExpectedToSend] * 1.0f) animated:self.af_uploadProgressAnimated];
                  });
              }
          }
  
          if ([keyPath isEqualToString:NSStringFromSelector(@selector(countOfBytesReceived))]) {
              if ([object countOfBytesExpectedToReceive] > 0) {
                  dispatch_async(dispatch_get_main_queue(), ^{
                      [self setProgress:[object countOfBytesReceived] / ([object countOfBytesExpectedToReceive] * 1.0f) animated:self.af_downloadProgressAnimated];
                  });
              }
          }
  
          if ([keyPath isEqualToString:NSStringFromSelector(@selector(state))]) {
              if ([(NSURLSessionTask *)object state] == NSURLSessionTaskStateCompleted) {
                  @try {
                      [object removeObserver:self forKeyPath:NSStringFromSelector(@selector(state))];
  
                      if (context == AFTaskCountOfBytesSentContext) {
                          [object removeObserver:self forKeyPath:NSStringFromSelector(@selector(countOfBytesSent))];
                      }
  
                      if (context == AFTaskCountOfBytesReceivedContext) {
                          [object removeObserver:self forKeyPath:NSStringFromSelector(@selector(countOfBytesReceived))];
                      }
                  }
                  @catch (NSException * __unused exception) {}
              }
          }
      }
  }
  
  @end
  
  #endif