BLAppDelegate.m

//
//  BLAppDelegate.m
//  Braid
//
//  Created by Idan Gazit on 5/14/13.
//  Copyright (c) 2013 BraidLabs. All rights reserved.
//


#import "BLAppDelegate.h"

#import "BLFirstRunViewController.h"

@implementation BLAppDelegate

@synthesize firstrunNavigationController;

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
	
    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
	
	BOOL (^nameFieldValidator)() = ^BOOL (NSString *str) {
		return [str hasPrefix:@"hello"];
	};
	NSDictionary *stepOneValidators = @{@"nameField": nameFieldValidator};
	NSDictionary *cfg = @{@"stepTitle": @"Let’s Get Started.",
					   @"stepSubTitle": @"Braid works with your existing GMail account.",
					   @"stepImageName": @"Mail.png",
					   @"validators": stepOneValidators};	

	BLFirstRunViewController *gmailViewController = [[BLFirstRunViewController alloc] initWithConfig:cfg nibName:@"BLFirstRunViewController"];
	
    self.firstrunNavigationController = [[UINavigationController alloc]
										 initWithRootViewController:gmailViewController];
    [self.firstrunNavigationController setNavigationBarHidden:YES];
    self.window.rootViewController = self.firstrunNavigationController;
    [self.window makeKeyAndVisible];
    return YES;
}
// ... more stuff
@end

BLFirstRunViewController.h

//
//  BLFirstRunViewController.h
//  Braid
//
//  Created by Idan Gazit on 5/29/13.
//  Copyright (c) 2013 BraidLabs. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface BLFirstRunViewController : UIViewController

@property (weak, nonatomic) IBOutlet UILabel *stepTitle;
@property (weak, nonatomic) IBOutlet UIImageView *stepImage;
@property (weak, nonatomic) IBOutlet UILabel *stepSubtitle;
@property (weak, nonatomic) IBOutlet UIButton *stepButton;
@property (strong, nonatomic) NSDictionary *config;

-(id)initWithConfig:(NSDictionary *)config nibName:(NSString *)nibName;

@end

BLFirstRunViewController.m

//
//  BLFirstRunViewController.m
//  Braid
//
//  Created by Idan Gazit on 5/29/13.
//  Copyright (c) 2013 BraidLabs. All rights reserved.
//

#import "BLFirstRunViewController.h"

@interface BLFirstRunViewController ()

@end

@implementation BLFirstRunViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        
    }
    return self;
}

-(id)initWithConfig:(NSDictionary *)config nibName:(NSString *)nibName
{
	if ((self = [super initWithNibName:nibName bundle:nil])) {
		self.config = config;
	}
	return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view from its nib.
    _stepTitle.font = [UIFont fontWithName:@"OpenSans-Light" size:28.0];
    _stepSubtitle.font = [UIFont fontWithName:@"OpenSans-Light" size:20];
    _stepButton.titleLabel.font = [UIFont fontWithName:@"OpenSans-Bold" size:15];	
}

- (void)viewWillAppear:(BOOL)animated
{
	_stepTitle.text = [self.config objectForKey:@"stepTitle"];
	_stepSubtitle.text = [self.config objectForKey:@"stepSubTitle"];
	// additionally, do all view frame adjustments here in viewWillAppear
}

-(void)validateFields:(UIButton *)sender
{
	BOOL (^ validator)() = self.config[@"validators"][@"nameField"];
	NSLog(@"%@", validator(@"hello, world") ? @"passes": @"failed");
	NSLog(@"%@", validator(@"ello, world") ? @"passes": @"failed");
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (IBAction)stepButtonTouchUp:(id)sender {
}
@end

@kallekoo the problem with this approach for me is that I need the button in one of the steps to display a modal. In other circumstances I did something like [self presentViewController:gtmoViewController animated:YES completion:nil]; except that I'm not sure how to make self inside a block refer to the controller instance in which it is invoked.

Thanks again for the mentoring. This stuff is super-confusing for me, coming from the web.

ah so that gtmoViewController is the modal view controller you want to display?

@idan You could make that modal displaying of the view controller a method on the generic BLFirstRunViewController and determine from the config if you need to display it

Ah, good idea.