Classes/Recipe.m

/*
     File: Recipe.m 
 Abstract: The model object for storing information about a Recipe 
  Version: 1.2 
  
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 */ 
 
#import "Recipe.h"
 
@implementation Recipe
 
/*
 Initialize a recipe object.
 */
- (id)init {
    self = [super init];
    if (self) {
        _ingredients = [[NSMutableArray alloc] init];
    }
    return self;
}
 
/*
 Release ownership.
 */
 
// Ingredients array setter
- (void)setIngredients:(NSMutableArray *)newIngredients {
    if (_ingredients != newIngredients) {
        _ingredients = [newIngredients mutableCopy];
    }
}
 
/*
 This method suplies an html representation of the recipe according to 
 the way it will be displayed when printed. The iOS Printing architecture 
 accepts an html representation via the UIMarkupTextPrintFormatter
 */
- (NSString *)htmlRepresentation {
    NSMutableString *body = [NSMutableString stringWithString:@"<!DOCTYPE html><html><body>"];
    
    if ([[self ingredients] count] > 0) {
        [body appendString:@"<h2>Ingredients</h2>"];
        [body appendString:@"<ul>"];
        for (NSDictionary *ingredient in [self ingredients]) {
            [body appendFormat:@"<li>%@ %@</li>", [ingredient objectForKey:@"amount"], [ingredient objectForKey:@"name"]];
        }
        [body appendString:@"</ul>"];
    }
    
    if ([[self instructions] length] > 0) {
        [body appendString:@"<h2>Instructions</h2>"];
        [body appendFormat:@"<p>%@</p>", [self instructions]];
    }
        
    [body appendString:@"</body></html>"];
    return body;
}
 
/*
 Aggregate some information in a custom way for printing. 
 Show the description, and Prep Time under the Recipe Title.
 */
- (NSString *)aggregatedInfo {
    
    NSMutableArray *infoPieces = [NSMutableArray array];
    if (self.description.length > 0) {
        [infoPieces addObject:self.description];
    }
    if (self.prepTime.length > 0) {
        [infoPieces addObject:[NSString stringWithFormat:@"Preparation Time: %@", self.prepTime]];
    }
    
    return [infoPieces componentsJoinedByString:@"\n"];
}
 
@end