ReactiveCocoa signal for keyboard done button taps

UITextField+RACKeyboardSupport.m

#import "UITextField+RACKeyboardSupport.h"
#import <ReactiveCocoa/RACEXTScope.h>
#import <ReactiveCocoa/NSObject+RACDescription.h>

@implementation UITextField (RACKeyboardSupport)

- (RACSignal *)rac_keyboardReturnSignal {
	@weakify(self);
	return [[[[RACSignal
		defer:^{
			@strongify(self);
			return [RACSignal return:self];
		}]
		concat:[self rac_signalForControlEvents:UIControlEventEditingDidEndOnExit]]
		takeUntil:self.rac_willDeallocSignal]
		setNameWithFormat:@"%@ -rac_keyboardReturnSignal", [self rac_description]];
}

@end

Usage: simply subscribing to this signal will trigger the keyboard to be dismissed when the user taps the done button. You have to pass a block to subscribeNext: but you don't have to do anything in that block (the block argument will be the text field).

[textField.rac_keyboardReturnSignal subscribeNext:^(id x) {}];

Thanks! Could you please apply a license to this code so that it can be used? (e.g. MIT)

@aehike code is released under the do whatever you want with it license (™).

Maybe this license: http://en.wikipedia.org/wiki/WTFPL

I had to add a skip:1 before concat: to skip the initial next call. Otherwise my UI logic would be executed as soon as I setup my bindings which isn't the contract of the function imho. It should only trigger next if the user really hits the return button.