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NSObject+NWBlockObservation.h
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NSObject+NWBlockObservation.h
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//
// NSObject+NWBlockObservation.h
// NWHandy
//
// Created by Nolan Waite on 10-12-12.
// Copyright 2010 Nolan Waite. All rights reserved.
//
// Original by Andy Matuschak who is awesome.
// andy@andymatuschak.org
// https://gist.github.com/153676
//
#import <Foundation/Foundation.h>
#if NS_BLOCKS_AVAILABLE && defined(MAC_OS_X_VERSION_10_6)
#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_6
typedef NSString NWBlockToken;
typedef void (^NWBlockTask)(id obj, NSDictionary *change);
@interface NSObject (NWBlockObservation)
- (NWBlockToken*)nw_addObserverForKeyPath:(NSString*)keyPath
task:(NWBlockTask)task;
- (NWBlockToken*)nw_addObserverForKeyPath:(NSString*)keyPath
options:(NSKeyValueObservingOptions)options
task:(NWBlockTask)task;
- (NWBlockToken*)nw_addObserverForKeyPath:(NSString*)keyPath
options:(NSKeyValueObservingOptions)options
onQueue:(NSOperationQueue*)queue
task:(NWBlockTask)task;
- (void)nw_removeObserverWithBlockToken:(NWBlockToken *)token;
@end
#endif
#endif