368 lines
12 KiB
Swift
368 lines
12 KiB
Swift
//
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// TextEntryField.swift
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// VDS
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//
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// Created by Matt Bruce on 10/3/22.
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//
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import Foundation
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import UIKit
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import VDSTokens
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import Combine
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/// An input field is an input wherein a customer enters information. They typically appear in forms.
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/// Specialized input fields capture credit card numbers, inline actions, passwords, phone numbers,
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/// dates and security codes in their correct formats.
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@objc(VDSInputField)
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open class InputField: EntryFieldBase {
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//--------------------------------------------------
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// MARK: - Initializers
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//--------------------------------------------------
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required public init() {
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super.init(frame: .zero)
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}
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public override init(frame: CGRect) {
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super.init(frame: .zero)
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}
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public required init?(coder: NSCoder) {
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super.init(coder: coder)
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}
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//--------------------------------------------------
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// MARK: - Private Properties
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//--------------------------------------------------
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internal var minWidthConstraint: NSLayoutConstraint?
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internal var titleLabelWidthConstraint: NSLayoutConstraint?
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//--------------------------------------------------
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// MARK: - Public FieldType Properties
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//--------------------------------------------------
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/// Representing the type of input.
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open var fieldType: FieldType = .text { didSet { setNeedsUpdate() } }
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//--------------------------------------------------
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// MARK: - CreditCard/SecurityCode
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//--------------------------------------------------
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open var cardType: CreditCardType = .generic { didSet { setNeedsUpdate() } }
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//--------------------------------------------------
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// MARK: - Password
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//--------------------------------------------------
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/// This is the text that will be displayed when the password is unmasked.
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open var hidePasswordButtonText: String = "Hide" { didSet { setNeedsUpdate() } }
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/// This is the text that will be displayed when the password is masked.
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open var showPasswordButtonText: String = "Show" { didSet { setNeedsUpdate() } }
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//--------------------------------------------------
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// MARK: - Date
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//--------------------------------------------------
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/// Date Format used when using the FieldType 'Date'.
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open var dateFormat: DateFormat = .mmddyy { didSet { setNeedsUpdate() } }
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//--------------------------------------------------
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// MARK: - Public Properties
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//--------------------------------------------------
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/// Label to render the successText.
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open var successLabel = Label().with {
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$0.setContentCompressionResistancePriority(.required, for: .vertical)
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$0.textStyle = .bodySmall
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}
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/// UITextField shown in the InputField.
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open var textField = TextField().with {
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$0.translatesAutoresizingMaskIntoConstraints = false
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$0.font = TextStyle.bodyLarge.font
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}
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/// Color configuration for the textField.
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open var textFieldTextColorConfiguration: AnyColorable = ViewColorConfiguration().with {
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$0.setSurfaceColors(VDSColor.interactiveDisabledOnlight, VDSColor.interactiveDisabledOndark, forDisabled: true)
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$0.setSurfaceColors(VDSColor.elementsPrimaryOnlight, VDSColor.elementsPrimaryOndark, forDisabled: false)
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}.eraseToAnyColorable()
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open var leftImageView = UIImageView().with {
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$0.height(21)
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$0.width(32)
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$0.isAccessibilityElement = false
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$0.translatesAutoresizingMaskIntoConstraints = false
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$0.contentMode = .scaleAspectFill
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$0.clipsToBounds = true
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}
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open var actionTextLink = TextLink().with { $0.contentEdgeInsets = .top(-2) }
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open var actionTextLinkModel: TextLinkModel? { didSet { setNeedsUpdate() } }
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/// The text of this TextField.
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open var text: String? {
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get { textField.text }
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set {
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textField.text = newValue
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setNeedsUpdate()
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}
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}
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/// Value for the textField
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open override var value: String? {
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if let value = fieldType.handler().value {
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return value
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} else {
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return textField.text
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}
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}
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var _showError: Bool = false
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/// Whether not to show the error.
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open override var showError: Bool {
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get { _showError }
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set {
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if !showSuccess && _showError != newValue {
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_showError = newValue
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setNeedsUpdate()
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}
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}
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}
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var _showSuccess: Bool = false
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/// Whether not to show the success.
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open var showSuccess: Bool {
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get { _showSuccess }
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set {
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if !showError && _showSuccess != newValue {
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_showSuccess = newValue
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setNeedsUpdate()
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}
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}
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}
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/// Override UIControl state to add the .error state if showSuccess is true and if showError is true.
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open override var state: UIControl.State {
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get {
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var state = super.state
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if showSuccess {
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state.insert(.success)
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}
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if textField.isFirstResponder {
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state.insert(.focused)
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}
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return state
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}
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}
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/// If given, this will be shown if showSuccess if true.
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open var successText: String? { didSet { setNeedsUpdate() } }
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/// Determines the placement of the helper text.
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open var helperTextPlacement: HelperTextPlacement = .bottom { didSet { setNeedsUpdate() } }
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//--------------------------------------------------
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// MARK: - Overrides
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//--------------------------------------------------
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/// Called once when a view is initialized and is used to Setup additional UI or other constants and configurations.
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open override func setup() {
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super.setup()
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titleLabel.setContentCompressionResistancePriority(.required, for: .horizontal)
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titleLabel.setContentHuggingPriority(.required, for: .horizontal)
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titleLabelWidthConstraint = titleLabel.width(constant: 0)
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minWidthConstraint = containerView.widthAnchor.constraint(greaterThanOrEqualToConstant: 0)
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minWidthConstraint?.isActive = true
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textField.heightAnchor.constraint(equalToConstant: 20).isActive = true
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textField.delegate = self
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textField
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.textPublisher
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.sink { [weak self] newText in
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guard let self else { return }
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print("textPublisher newText: \(newText)")
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if self.fieldType.handler().validateOnChange {
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self.validate()
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}
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self.sendActions(for: .valueChanged)
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}.store(in: &subscribers)
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stackView.addArrangedSubview(successLabel)
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stackView.setCustomSpacing(8, after: successLabel)
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fieldStackView.addArrangedSubview(actionTextLink)
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successLabel.textColorConfiguration = primaryColorConfiguration.eraseToAnyColorable()
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backgroundColorConfiguration.setSurfaceColors(VDSColor.feedbackSuccessBackgroundOnlight, VDSColor.feedbackSuccessBackgroundOndark, forState: .success)
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borderColorConfiguration.setSurfaceColors(VDSColor.feedbackSuccessOnlight, VDSColor.feedbackSuccessOndark, forState: .success)
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}
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open override func getFieldContainer() -> UIView {
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// stackview for controls in EntryFieldBase.controlContainerView
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let stackView = UIStackView().with {
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$0.translatesAutoresizingMaskIntoConstraints = false
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$0.axis = .horizontal
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$0.spacing = VDSLayout.space3X
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}
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stackView.addArrangedSubview(leftImageView)
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stackView.addArrangedSubview(textField)
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return stackView
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}
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/// Resets to default settings.
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open override func reset() {
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super.reset()
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textField.text = ""
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successLabel.reset()
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successLabel.textStyle = .bodySmall
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fieldType = .text
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showSuccess = false
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successText = nil
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helperTextPlacement = .bottom
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}
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/// Used to make changes to the View based off a change events or from local properties.
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open override func updateView() {
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//update fieldType first
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fieldType.handler().updateView(self)
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super.updateView()
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textField.isEnabled = isEnabled
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textField.textColor = textFieldTextColorConfiguration.getColor(self)
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}
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open override func updateErrorLabel() {
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super.updateErrorLabel()
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//show error or success
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if showError, let _ = errorText {
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successLabel.isHidden = true
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} else if showSuccess, let successText {
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successLabel.text = successText
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successLabel.surface = surface
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successLabel.isEnabled = isEnabled
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successLabel.isHidden = false
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errorLabel.isHidden = true
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statusIcon.name = .checkmarkAlt
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statusIcon.color = VDSColor.paletteBlack
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statusIcon.surface = surface
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statusIcon.isHidden = !isEnabled
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} else {
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successLabel.isHidden = true
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}
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}
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open override func updateHelperLabel(){
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//remove first
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helperLabel.removeFromSuperview()
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super.updateHelperLabel()
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//set the helper label position
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if helperText != nil {
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if helperTextPlacement == .right {
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middleStackView.spacing = VDSLayout.space3X
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middleStackView.distribution = .fillEqually
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middleStackView.addArrangedSubview(helperLabel)
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} else {
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middleStackView.spacing = 0
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middleStackView.distribution = .fill
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bottomContainerStackView.addArrangedSubview(helperLabel)
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}
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}
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}
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override func updateRules() {
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super.updateRules()
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fieldType.handler().appendRules(self)
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}
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/// Used to update any Accessibility properties.
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open override func updateAccessibility() {
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super.updateAccessibility()
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textField.accessibilityLabel = showError ? "error" : nil
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}
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open override var accessibilityElements: [Any]? {
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get {
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var elements = [Any]()
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elements.append(contentsOf: [titleLabel, textField])
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if showError {
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elements.append(statusIcon)
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if let errorText, !errorText.isEmpty {
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elements.append(errorLabel)
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}
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} else if showSuccess, let successText, !successText.isEmpty {
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elements.append(successLabel)
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}
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if let helperText, !helperText.isEmpty {
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elements.append(helperLabel)
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}
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return elements
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}
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set { super.accessibilityElements = newValue }
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}
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open override func layoutSubviews() {
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super.layoutSubviews()
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titleLabelWidthConstraint?.constant = containerView.frame.width
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titleLabelWidthConstraint?.isActive = helperTextPlacement == .right
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}
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open override var canBecomeFirstResponder: Bool { true }
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open override func resignFirstResponder() -> Bool {
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if textField.isFirstResponder {
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textField.resignFirstResponder()
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}
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return super.resignFirstResponder()
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}
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}
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extension InputField: UITextFieldDelegate {
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public func textFieldDidBeginEditing(_ textField: UITextField) {
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fieldType.handler().textFieldDidBeginEditing(self, textField: textField)
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setNeedsUpdate()
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}
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public func textFieldDidEndEditing(_ textField: UITextField) {
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fieldType.handler().textFieldDidEndEditing(self, textField: textField)
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validate()
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}
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public func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool {
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return fieldType.handler().textField(self, textField: textField, shouldChangeCharactersIn: range, replacementString: string)
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}
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}
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extension String {
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internal static func format(_ value: String, indices: [Int], with separator: String) -> String {
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var formattedString = ""
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var currentIndex = value.startIndex
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for index in 0..<value.count {
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if indices.contains(index) {
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formattedString.append(separator)
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}
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formattedString.append(value[currentIndex])
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currentIndex = value.index(after: currentIndex)
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}
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return formattedString
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}
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}
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