         self.updateContraints()
     }
 
+
+    // MARK: Event handling
+
     func handleTaps(sender: UIControl) {
         let index = sender.tag
         let action = self.actions[index]


    private var actionGroupView: UIView = UIView()
    private var cancelGroupView: UIView = UIView()

    // MARK: Initializers


        didSet { self.updateUI() }
    }
    @IBInspectable public var cornerRadius: Int         = 10 {
        didSet { self.updateUI() }
    }

    @IBInspectable public var spacingColor: UIColor = UIColor.clearColor() {
        didSet { self.updateUI() }
    }

