Posted By

LeeProbert on 04/22/10

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Last Edited at 04/22/10 11:29am

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DataModel Object for archiving

/ Published in: Objective C

Here's a simple object class that has been set up so it can be archived using the NSKeyedUnarchiver and NSKeyedArchiver classes. This process in another snippet.

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/* INTERFACE */

#define	kfavesArray @"favesArray"
#define	kCurrentFave @"currentFave"
#define	kCurrentFaveIndex @"currentFaveIndexPath"

#import <Foundation/Foundation.h>

@class FaveVO;

@interface DataModel : NSObject <NSCoding>
{
	NSMutableArray *favesArray;
	FaveVO *currentFave;
	int faveIndex;
}

@property (nonatomic, retain) NSMutableArray *favesArray;
@property (nonatomic, retain) FaveVO *currentFave;
@property int faveIndex;

-(void)addNewFaveLocation:(FaveVO *)fave;
-(void)createNewFaveVOFromFaveVO:(FaveVO *)fave;
-(void)setFaveLocation:(int)index;
-(void)removeFaveLocation;

@end

/* IMPLEMENTATION */

#import "DataModel.h"
#import "FaveVO.h"

@implementation DataModel

@synthesize favesArray;
@synthesize currentFave;
@synthesize faveIndex;

//------------------------------------------------------
-(id)init
{
	if(self = [super init])
	{
		favesArray = [[NSMutableArray alloc] init];
	}
	
	return self;
}
//--------------------------------------------------
-(void)addNewFaveLocation:(FaveVO *)fave
{
	if(!favesArray) favesArray = [[NSMutableArray alloc] init];
	
	[favesArray insertObject:fave atIndex:0];
	currentFave = [favesArray objectAtIndex:0];
	faveIndex = 0;
	
	NSLog(@"DataModel currentFave: %@ faveIndex: %i", currentFave,faveIndex);
}
//--------------------------------------------------
-(void)setFaveLocation:(int)index
{
	currentFave = [favesArray objectAtIndex:index];
	faveIndex = index;
	
	NSLog(@"DataModel currentFave: %@ faveIndex: %i", currentFave,faveIndex);
}
//--------------------------------------------------
-(void)removeFaveLocation
{
	currentFave = nil;
	
	NSLog(@"DataModel currentFave: %@ faveIndex: %i", currentFave,faveIndex);
}
//--------------------------------------------------
-(void)createNewFaveVOFromFaveVO:(FaveVO *)fave
{
	double lat = fave.lat;
	double lon = fave.lon;
	
	FaveVO *newFaveVO = [[FaveVO alloc] initWithLabel:[NSString stringWithString:fave.label] 
										streetAddress:[NSString stringWithString:fave.streetAddress] 
												 city:[NSString stringWithString:fave.city] 
												state:[NSString stringWithString:fave.state] 
												  zip:[NSString stringWithString:fave.zip] 
												  lat:lat 
												  lon:lon];
	[favesArray addObject:newFaveVO];
	[newFaveVO release];
}
//--------------------------------------------------
-(void)dealloc
{
	[favesArray release];
	[currentFave release];
	[super dealloc];
}
//--------------------------------------------------

//--------------------------------------------------
#pragma mark NSCoding
- (void)encodeWithCoder:(NSCoder *)encoder
{
	[encoder encodeObject:favesArray forKey:kfavesArray];
	[encoder encodeObject:currentFave forKey:kCurrentFave];
	[encoder encodeInt:faveIndex forKey:kCurrentFaveIndex];
}
//--------------------------------------------------
- (id)initWithCoder:(NSCoder *)decoder
{
	NSLog(@"DataModel initWithCoder: %@", decoder);
	
	if (self = [super init])
	{
		self.favesArray = [decoder decodeObjectForKey:kfavesArray];
		
		self.faveIndex = [decoder decodeIntForKey:kCurrentFaveIndex];
		self.currentFave = [favesArray objectAtIndex:faveIndex];
	}
	return self;
}

@end

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