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//
// AccountTextField.swift
// MullvadVPN
//
// Created by pronebird on 20/03/2019.
// Copyright © 2025 Mullvad VPN AB. All rights reserved.
//
import UIKit
class AccountTextField: CustomTextField, UITextFieldDelegate {
enum GroupingStyle: Int {
case full
case lastPart
var size: UInt8 {
switch self {
case .full:
return 4
case .lastPart:
return 1
}
}
}
private var groupSize: GroupingStyle = .full
private lazy var inputFormatter = InputTextFormatter(
configuration: InputTextFormatter.Configuration(
allowedInput: .numeric,
groupSeparator: " ",
groupSize: 4,
maxGroups: groupSize.size
))
var onReturnKey: ((AccountTextField) -> Bool)?
init(groupingStyle: GroupingStyle = .full) {
self.groupSize = groupingStyle
super.init(frame: .zero)
commonInit()
}
override init(frame: CGRect) {
super.init(frame: frame)
commonInit()
}
required init?(coder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
private func commonInit() {
backgroundColor = .clear
cornerRadius = 0
delegate = self
pasteDelegate = inputFormatter
NotificationCenter.default.addObserver(
self,
selector: #selector(keyboardWillShow(_:)),
name: UIWindow.keyboardWillShowNotification,
object: nil
)
}
var autoformattingText: String {
get {
inputFormatter.formattedString
}
set {
inputFormatter.replace(with: newValue)
inputFormatter.updateTextField(self)
}
}
var parsedToken: String {
inputFormatter.string
}
var enableReturnKey = true {
didSet {
updateKeyboardReturnKey()
}
}
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 {
onReturnKey?(self) ?? true
}
// MARK: - Notifications
@objc private func keyboardWillShow(_ notification: Notification) {
if isFirstResponder {
updateKeyboardReturnKey()
}
}
// MARK: - Keyboard
private func updateKeyboardReturnKey() {
setEnableKeyboardReturnKey(enableReturnKey)
}
private func setEnableKeyboardReturnKey(_ enableReturnKey: Bool) {
let selector = NSSelectorFromString("setReturnKeyEnabled:")
if let inputDelegate = inputDelegate as? NSObject, inputDelegate.responds(to: selector) {
inputDelegate.setValue(enableReturnKey, forKey: "returnKeyEnabled")
}
}
// MARK: - Accessibility
override var accessibilityValue: String? {
get {
if text?.isEmpty ?? true {
return ""
} else {
return super.accessibilityValue
}
}
set {
super.accessibilityValue = newValue
}
}
}
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