import Foundation
import UIKit

class BindingTextField : UITextField {

    var textChanged :(String) -> () = { _ in }

    func bind(callback :@escaping (String) -> ()) {

        self.textChanged = callback
        self.addTarget(self, action: #selector(textFieldDidChange), for: .editingChanged)
    }

    @objc func textFieldDidChange(_ textField :UITextField) {

        self.textChanged(textField.text!)
    }

}