Working text to dialog array

gistfile1.m

//
//  Calculates the substring that fits in a frame
//

- (NSString *) substringThatFitsFrame:(CGRect)frame withFont:(UIFont *)font{
    
    NSString *truncatedString = self;
    
    CGSize clippingSize = CGSizeMake(frame.size.width, CGFLOAT_MAX);
    
    CGSize size = [truncatedString sizeWithFont:font constrainedToSize:clippingSize lineBreakMode:NSLineBreakByClipping];

    
    NSMutableArray *components = [[truncatedString componentsSeparatedByString:@" "] mutableCopy];
    
    while (frame.size.width <= size.width || frame.size.height <= size.height) {

        [components removeLastObject];
        
        truncatedString = [components componentsJoinedByString:@" "];
        
        size = [truncatedString sizeWithFont:font constrainedToSize:clippingSize lineBreakMode:NSLineBreakByClipping];
        
    }

    return truncatedString;
}