54 lines
1.6 KiB
Objective-C
54 lines
1.6 KiB
Objective-C
//
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// UIImagePickerController+RACSignalSupport.m
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// ReactiveObjC
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//
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// Created by Timur Kuchkarov on 28.03.14.
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// Copyright (c) 2014 GitHub. All rights reserved.
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//
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#import "UIImagePickerController+RACSignalSupport.h"
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#import "RACDelegateProxy.h"
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#import "RACSignal+Operations.h"
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#import "NSObject+RACDeallocating.h"
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#import "NSObject+RACDescription.h"
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#import <objc/runtime.h>
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@implementation UIImagePickerController (RACSignalSupport)
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static void RACUseDelegateProxy(UIImagePickerController *self) {
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if (self.delegate == self.rac_delegateProxy) return;
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self.rac_delegateProxy.rac_proxiedDelegate = self.delegate;
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self.delegate = (id)self.rac_delegateProxy;
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}
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- (RACDelegateProxy *)rac_delegateProxy {
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RACDelegateProxy *proxy = objc_getAssociatedObject(self, _cmd);
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if (proxy == nil) {
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proxy = [[RACDelegateProxy alloc] initWithProtocol:@protocol(UIImagePickerControllerDelegate)];
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objc_setAssociatedObject(self, _cmd, proxy, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
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}
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return proxy;
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}
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- (RACSignal *)rac_imageSelectedSignal {
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RACSignal *pickerCancelledSignal = [[self.rac_delegateProxy
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signalForSelector:@selector(imagePickerControllerDidCancel:)]
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merge:self.rac_willDeallocSignal];
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RACSignal *imagePickerSignal = [[[[self.rac_delegateProxy
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signalForSelector:@selector(imagePickerController:didFinishPickingMediaWithInfo:)]
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reduceEach:^(UIImagePickerController *pickerController, NSDictionary *userInfo) {
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return userInfo;
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}]
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takeUntil:pickerCancelledSignal]
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setNameWithFormat:@"%@ -rac_imageSelectedSignal", RACDescription(self)];
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RACUseDelegateProxy(self);
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return imagePickerSignal;
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}
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@end
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