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64 lines
1.7 KiB
64 lines
1.7 KiB
2 years ago
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//
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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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