Style with extensions

extensions.swift

//
//  ViewController.swift
//  Styles
//
//  Created by Jabari Bell on 1/22/16.
//  Copyright © 2016 Jabari Bell. All rights reserved.
//

import UIKit

protocol BorderStyleable {
    var borderWidth: CGFloat { get }
    var borderColor: UIColor { get }
}

enum BorderStyle: BorderStyleable {
    case Default
    
    var borderWidth: CGFloat {
        switch self {
        case .Default:
            return 1.0
        }
    }
    
    var borderColor: UIColor {
        switch self {
        case .Default:
            return UIColor.redColor()
        }
    }
}

protocol BorderStyled {
    var borderStyle: BorderStyle { get }
}

extension BorderStyled {
    var borderStyle: BorderStyle {
        return .Default
    }
}

class MyView: UIView {}

extension MyView: BorderStyled {
}

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }


}