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//
// VoucherTextField.swift
// MullvadVPN
//
// Created by Andreas Lif on 2022-08-05.
// Copyright © 2025 Mullvad VPN AB. All rights reserved.
//
import Foundation
import UIKit
class VoucherTextField: CustomTextField, UITextFieldDelegate {
private let inputFormatter = InputTextFormatter(
configuration: InputTextFormatter.Configuration(
allowedInput: .alphanumeric(isUpperCase: true),
groupSeparator: "-",
groupSize: 4,
maxGroups: 4
))
private var voucherLength: UInt8 {
let maxGroups = inputFormatter.configuration.maxGroups
let groupSize = inputFormatter.configuration.groupSize
return maxGroups * groupSize + (maxGroups - 1)
}
var parsedToken: String {
inputFormatter.string
}
var isVoucherLengthSatisfied: Bool {
let length = text?.count ?? 0
return length >= voucherLength
}
override init(frame: CGRect) {
super.init(frame: frame)
delegate = self
autocorrectionType = .no
}
required init?(coder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
override func canPerformAction(_ action: Selector, withSender sender: Any?) -> Bool {
if action == #selector(captureTextFromCamera(_:)) { return false }
return super.canPerformAction(action, withSender: sender)
}
// MARK: - UITextFieldDelegate
func textField(
_ textField: UITextField,
shouldChangeCharactersIn range: NSRange,
replacementString string: String
) -> Bool {
inputFormatter.textField(
textField,
shouldChangeCharactersIn: range,
replacementString: string
)
}
func textFieldShouldReturn(_ textField: UITextField) -> Bool {
textField.resignFirstResponder()
return true
}
}
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