extension UITextField {

    func underlined(){
        let border = CALayer()
        let width = CGFloat(2.0)
        if let widthOfText = self.attributedText?.size().width{
            border.borderColor = UIColor.primaryColor.cgColor
            border.frame = CGRect(x: self.frame.size.width - widthOfText, y: self.frame.size.height - width, width:  widthOfText, height: self.frame.size.height)
            border.borderWidth = width
            self.layer.addSublayer(border)
            self.layer.masksToBounds = true
        }
    }

    func hideUnderline(){
        let border = CALayer()
        let width = CGFloat(2.0)
        border.borderColor = UIColor.white.cgColor
        border.frame = CGRect(x: 0, y: self.frame.size.height - width, width:  self.frame.size.width, height: self.frame.size.height)
        border.borderWidth = width
        self.layer.addSublayer(border)
        self.layer.masksToBounds = true
    }

    func removeUnderline(){
        if let subLayers = self.layer.sublayers{
            for layers in subLayers{
                layers.removeFromSuperlayer()
            }
        }
    }
}