//
//  main.m
//  KVOTest
//
//  Created by Ilya Kulakov on 04.07.12.
//  Copyright (c) 2012 kulakov.ilya@gmail.com. All rights reserved.
//

#import <Foundation/Foundation.h>


@interface ObjectWithArray : NSObject
@property (copy) NSArray *array;
@end


@interface TopObject : NSObject
@property (retain) ObjectWithArray *property;
@end


@interface Observer : NSObject
@end


#pragma mark -


@implementation ObjectWithArray
@synthesize array;
@end


@implementation TopObject
@synthesize property;
@end


@implementation Observer

- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context
{
    NSLog(@"Path: %@", keyPath);
    NSLog(@"Change: %@", change);
}

@end


#pragma mark -


int main(int argc, const char * argv[])
{
    @autoreleasepool {
        ObjectWithArray *o1 = [[ObjectWithArray new] autorelease];
        TopObject *o2 = [[TopObject new] autorelease];
        Observer *o3 = [[Observer new] autorelease];

        [o2 addObserver:o3 forKeyPath:@"property.array" options:NSKeyValueObservingOptionNew | NSKeyValueObservingOptionInitial context:NULL];
        o2.property = o1;
        o1.array = [NSArray arrayWithObject:@"mamba"];
    }
    return 0;
}