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Example/Pods/ReactiveObjC/ReactiveObjC/UIControl+RACSignalSupportPrivate.m

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+//
+//  UIControl+RACSignalSupportPrivate.m
+//  ReactiveObjC
+//
+//  Created by Uri Baghin on 06/08/2013.
+//  Copyright (c) 2013 GitHub, Inc. All rights reserved.
+//
+
+#import "UIControl+RACSignalSupportPrivate.h"
+#import "NSObject+RACDeallocating.h"
+#import "NSObject+RACLifting.h"
+#import "RACChannel.h"
+#import "RACCompoundDisposable.h"
+#import "RACDisposable.h"
+#import "RACSignal+Operations.h"
+#import "UIControl+RACSignalSupport.h"
+
+@implementation UIControl (RACSignalSupportPrivate)
+
+- (RACChannelTerminal *)rac_channelForControlEvents:(UIControlEvents)controlEvents key:(NSString *)key nilValue:(id)nilValue {
+	NSCParameterAssert(key.length > 0);
+	key = [key copy];
+	RACChannel *channel = [[RACChannel alloc] init];
+
+	[self.rac_deallocDisposable addDisposable:[RACDisposable disposableWithBlock:^{
+		[channel.followingTerminal sendCompleted];
+	}]];
+
+	RACSignal *eventSignal = [[[self
+		rac_signalForControlEvents:controlEvents]
+		mapReplace:key]
+		takeUntil:[[channel.followingTerminal
+			ignoreValues]
+			catchTo:RACSignal.empty]];
+	[[self
+		rac_liftSelector:@selector(valueForKey:) withSignals:eventSignal, nil]
+		subscribe:channel.followingTerminal];
+
+	RACSignal *valuesSignal = [channel.followingTerminal
+		map:^(id value) {
+			return value ?: nilValue;
+		}];
+	[self rac_liftSelector:@selector(setValue:forKey:) withSignals:valuesSignal, [RACSignal return:key], nil];
+
+	return channel.leadingTerminal;
+}
+
+@end