Classes/RecipesController.m

/*
     File: RecipesController.m 
 Abstract: A controller object for managing a set of Recipe objects 
  Version: 1.2 
  
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 */ 
 
#import "RecipesController.h"
#import "Recipe.h"
 
static NSString *DataFilename = @"Recipes.archive";
 
@interface RecipesController (DemoData)
- (void)createDemoData;
@end
 
@implementation RecipesController
{
    NSMutableIndexSet *selectedIndexes;
}
 
/*
 Since this sample is intended to focus more on printing versus Core Data demonstration, see the
 sample code titled iPhoneCoreDataRecipes for more information on creating custom UITableViewCells.
 */
 
- (id)init {
    if ((self = [super init])) {
        NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
        if ([paths count] == 0) {
            [self createDemoData];
        } else {        
            NSString *documentsDirectory = [paths objectAtIndex:0];
            NSString *appFile = [documentsDirectory stringByAppendingPathComponent:DataFilename];
 
            NSFileManager *fm = [NSFileManager defaultManager];
            if (/*0 && */[fm fileExistsAtPath:appFile]) {
                _recipes = [NSKeyedUnarchiver unarchiveObjectWithFile:appFile];
            } else {        
                [self createDemoData];
            }
        }
        [self sortAlphabeticallyAscending:YES];
        
        selectedIndexes = [[NSMutableIndexSet alloc] init];
    }
    return self;
}
 
- (void)sortAlphabeticallyAscending:(BOOL)ascending {    
    NSSortDescriptor *sortInfo = [[NSSortDescriptor alloc] initWithKey:@"name" ascending:ascending];
    [self.recipes sortUsingDescriptors:[NSArray arrayWithObject:sortInfo]];
}
 
/*
 Create the recipe objects and initialize them from the Recipes.plist file on the app bundle
 */
- (void)createDemoData {
    _recipes = [[NSMutableArray alloc] init];
    NSArray *recipeDictionaries = [[NSArray alloc] initWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"Recipes" ofType:@"plist"]];
    
    NSArray *propertyNames = [[NSArray alloc] initWithObjects:@"name", @"description", @"prepTime", @"instructions", @"ingredients", nil];
    
    for (NSDictionary *recipeDictionary in recipeDictionaries) {
        
        Recipe *newRecipe = [[Recipe alloc] init];
        for (NSString *property in propertyNames) {
            [newRecipe setValue:[recipeDictionary objectForKey:property] forKey:property];
        }
        
        NSString *imageName = [recipeDictionary objectForKey:@"imageName"];
        newRecipe.image = [UIImage imageNamed:imageName];
        
        imageName = [[imageName stringByDeletingPathExtension] stringByAppendingString:@"_thumbnail.png"];
        newRecipe.thumbnailImage = [UIImage imageNamed:imageName];
 
        [_recipes addObject:newRecipe];
    }
}
 
- (unsigned)countOfRecipes {
    return [_recipes count];
}
 
- (id)objectInRecipesAtIndex:(unsigned)theIndex {
    return [_recipes objectAtIndex:theIndex];
}
 
 
@end