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63 lines
1.7 KiB
63 lines
1.7 KiB
// |
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// UIAlertView+RACSignalSupport.m |
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// ReactiveObjC |
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// |
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// Created by Henrik Hodne on 6/16/13. |
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// Copyright (c) 2013 GitHub, Inc. All rights reserved. |
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// |
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#import "UIAlertView+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 UIAlertView (RACSignalSupport) |
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static void RACUseDelegateProxy(UIAlertView *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(UIAlertViewDelegate)]; |
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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_buttonClickedSignal { |
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RACSignal *signal = [[[[self.rac_delegateProxy |
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signalForSelector:@selector(alertView:clickedButtonAtIndex:)] |
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reduceEach:^(UIAlertView *alertView, NSNumber *buttonIndex) { |
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return buttonIndex; |
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}] |
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takeUntil:self.rac_willDeallocSignal] |
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setNameWithFormat:@"%@ -rac_buttonClickedSignal", RACDescription(self)]; |
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RACUseDelegateProxy(self); |
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return signal; |
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} |
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- (RACSignal *)rac_willDismissSignal { |
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RACSignal *signal = [[[[self.rac_delegateProxy |
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signalForSelector:@selector(alertView:willDismissWithButtonIndex:)] |
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reduceEach:^(UIAlertView *alertView, NSNumber *buttonIndex) { |
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return buttonIndex; |
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}] |
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takeUntil:self.rac_willDeallocSignal] |
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setNameWithFormat:@"%@ -rac_willDismissSignal", RACDescription(self)]; |
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RACUseDelegateProxy(self); |
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return signal; |
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} |
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@end
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