1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/KVUtils.h	Sat Mar 08 21:04:41 2008 -0800
     1.3 @@ -0,0 +1,66 @@
     1.4 +//
     1.5 +//  KVUtils.h
     1.6 +//  MYUtilities
     1.7 +//
     1.8 +//  Created by Jens Alfke on 2/25/08.
     1.9 +//  Copyright 2008 Jens Alfke. All rights reserved.
    1.10 +//
    1.11 +
    1.12 +#import <Cocoa/Cocoa.h>
    1.13 +
    1.14 +
    1.15 +enum {
    1.16 +    MYKeyValueObservingOptionOnce = 1<<31,
    1.17 +    MYKeyValueObservingOptionDelayed = 1<<30
    1.18 +};
    1.19 +
    1.20 +
    1.21 +
    1.22 +@interface Observance : NSObject
    1.23 +{
    1.24 +    id _target;
    1.25 +    id _observed;
    1.26 +    NSString *_keyPath;
    1.27 +    NSKeyValueObservingOptions _options;
    1.28 +    SEL _action;
    1.29 +}
    1.30 +
    1.31 +- (id) initWithTarget: (id)target 
    1.32 +               action: (SEL)action
    1.33 +             observed: (id)observed
    1.34 +              keyPath: (NSString*)keyPath 
    1.35 +              options: (NSKeyValueObservingOptions)options;
    1.36 +
    1.37 +- (void) stopObserving;
    1.38 +
    1.39 +@property (readonly) id observed;
    1.40 +@property (readonly) NSString* keyPath;
    1.41 +
    1.42 +@end
    1.43 +
    1.44 +
    1.45 +
    1.46 +@interface Observer : NSObject
    1.47 +{
    1.48 +    id _target;
    1.49 +    NSMutableArray *_observances;
    1.50 +}
    1.51 +
    1.52 +- (id) initWithTarget: (id)target;
    1.53 +
    1.54 +@property (readonly) id target;
    1.55 +
    1.56 +- (void) observe: (id)observed 
    1.57 +         keyPath: (NSString*)keyPath 
    1.58 +         options: (NSKeyValueObservingOptions)options
    1.59 +          action: (SEL)action;
    1.60 +
    1.61 +- (void) observe: (id)observed 
    1.62 +         keyPath: (NSString*)keyPath 
    1.63 +          action: (SEL)action;
    1.64 +
    1.65 +- (void) stopObserving: (id)observedOrNil keyPath: (NSString*)keyPathOrNil;
    1.66 +
    1.67 +- (void) stopObserving;
    1.68 +
    1.69 +@end