595 lines
21 KiB
Swift
595 lines
21 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 inputFieldStackView: UIStackView = {
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return UIStackView().with {
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$0.translatesAutoresizingMaskIntoConstraints = false
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$0.axis = .horizontal
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$0.distribution = .fill
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$0.spacing = 12
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}
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}()
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internal var minWidthConstraint: NSLayoutConstraint?
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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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/// Representing the type of input.
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open var fieldType: FieldType = .text { didSet { setNeedsUpdate() } }
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open var leftImageView = UIImageView().with { $0.height(21); $0.width(32) }
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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 fieldType == .creditCard {
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return creditCardRawNumber
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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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} else 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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minWidthConstraint = containerView.widthAnchor.constraint(greaterThanOrEqualToConstant: 0)
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minWidthConstraint?.isActive = true
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// stackview for controls in EntryFieldBase.controlContainerView
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let controlStackView = 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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controlContainerView.addSubview(controlStackView)
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controlStackView.pinToSuperView()
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controlStackView.addArrangedSubview(leftImageView)
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controlStackView.addArrangedSubview(textField)
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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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print("textPublisher newText: \(newText)")
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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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containerStackView.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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/// 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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/// Container for the area in which the user interacts.
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open override func getContainer() -> UIView {
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inputFieldStackView.addArrangedSubview(containerView)
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return inputFieldStackView
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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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updateFieldType()
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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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inputFieldStackView.spacing = 12
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inputFieldStackView.distribution = .fillEqually
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inputFieldStackView.addArrangedSubview(helperLabel)
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} else {
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inputFieldStackView.spacing = 0
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inputFieldStackView.distribution = .fill
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stackView.addArrangedSubview(helperLabel)
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}
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}
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}
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open func updateFieldType() {
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var minWidth: CGFloat = 40.0
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var leftImageName: String?
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var actionModel: InputField.TextLinkModel?
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var toolTipModel: Tooltip.TooltipModel? = tooltipModel
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var isSecureTextEntry = false
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var placeholderText: String?
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switch fieldType {
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case .text:
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break
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case .number:
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break
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case .inlineAction:
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minWidth = 102.0
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case .password:
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let isHide = passwordActionType == .hide
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let buttonText = isHide ?
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hidePasswordButtonText.isEmpty ? "Hide" : hidePasswordButtonText :
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showPasswordButtonText.isEmpty ? "Show" : showPasswordButtonText
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isSecureTextEntry = !isHide
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let nextPasswordActionType = passwordActionType.toggle()
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if let text, !text.isEmpty {
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actionModel = .init(text: buttonText,
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onClick: { [weak self] _ in
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guard let self else { return }
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self.passwordActionType = nextPasswordActionType
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})
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} else {
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passwordActionType = .show
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}
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minWidth = 62.0
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case .creditCard:
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minWidth = 288.0
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leftImageName = creditCardType.imageName
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case .telephone:
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minWidth = 176.0
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case .date:
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minWidth = 114.0
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placeholderText = dateFormat.placeholderText
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case .securityCode:
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minWidth = 88.0
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isSecureTextEntry = true
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}
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//textField
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textField.isSecureTextEntry = isSecureTextEntry
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//leftIcon
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if let leftImageName {
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leftImageView.image = BundleManager.shared.image(for: leftImageName)?.withTintColor(iconColorConfiguration.getColor(self))
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}
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leftImageView.isHidden = leftImageName == nil
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//actionLink
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actionTextLink.surface = surface
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if let actionModel {
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actionTextLink.text = actionModel.text
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actionTextLink.onClick = actionModel.onClick
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actionTextLink.isHidden = false
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containerStackView.setCustomSpacing(VDSLayout.space2X, after: statusIcon)
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} else {
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actionTextLink.isHidden = true
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containerStackView.setCustomSpacing(0, after: statusIcon)
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}
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//set the width constraints
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if let width, width > minWidth {
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widthConstraint?.constant = width
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widthConstraint?.isActive = true
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minWidthConstraint?.isActive = false
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} else {
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minWidthConstraint?.constant = minWidth
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widthConstraint?.isActive = false
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minWidthConstraint?.isActive = true
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}
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//placeholder
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textField.placeholder = placeholderText
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//tooltip
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tooltipModel = toolTipModel
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}
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override func updateRules() {
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super.updateRules()
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fieldType.appendRules(for: 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 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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// MARK: - Private Methods
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//--------------------------------------------------
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internal func cursorPosition(textField: UITextField, range: NSRange, replacementString string: String, rawNumber: String, formattedNumber: String) -> UITextPosition? {
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let start = range.location
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let length = string.count
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let newCursorLocation = start + length
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// Adjust the cursor position to skip over formatting characters
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var formattedCharacterCount = 0
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for (index, character) in formattedNumber.enumerated() {
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if index >= newCursorLocation + formattedCharacterCount {
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break
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}
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if !character.isNumber {
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formattedCharacterCount += 1
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}
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}
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let finalCursorLocation = min(newCursorLocation + formattedCharacterCount, formattedNumber.count)
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return textField.position(from: textField.beginningOfDocument, offset: finalCursorLocation)
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}
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//--------------------------------------------------
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// MARK: - Password
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//--------------------------------------------------
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internal var passwordActionType: PasswordAction = .show { didSet { setNeedsUpdate() } }
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open var hidePasswordButtonText: String = "Hide" { didSet { setNeedsUpdate() } }
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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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open var dateFormat: DateFormat = .mmddyy { didSet { setNeedsUpdate() } }
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//---------------------------------------------------
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// MARK: - Credit Card
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//---------------------------------------------------
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internal var creditCardRawNumber: String = ""
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internal var creditCardType: CreditCardType = .generic { didSet { setNeedsUpdate() } }
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//---------------------------------------------------
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// MARK: - Telephone
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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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if fieldType == .creditCard {
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textField.text = formatCreditCardNumber(creditCardRawNumber)
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}
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}
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public func textFieldDidEndEditing(_ textField: UITextField) {
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if self.fieldType == .creditCard {
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textField.text = maskCreditCardNumber(creditCardRawNumber)
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}
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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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// case text, number, inlineAction, password, creditCard, tel, date, securityCode
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switch fieldType {
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case .creditCard:
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let allowedCharacters = CharacterSet.decimalDigits
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if string.rangeOfCharacter(from: allowedCharacters.inverted) != nil && !string.isEmpty {
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return false
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}
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// Get the current text
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let currentText = textField.text ?? ""
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// Calculate the new text
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let newText = (currentText as NSString).replacingCharacters(in: range, with: string)
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// Remove any existing formatting
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let rawNumber = newText.filter { $0.isNumber }
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if rawNumber.count > creditCardType.maxLength {
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return false
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}
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// Format the number with spaces
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let formattedNumber = formatCreditCardNumber(rawNumber)
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// Update the icon based on the first four digits
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updateCardTypeIcon(rawNumber: rawNumber)
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// Check again
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if rawNumber.count > creditCardType.maxLength {
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return false
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}
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// Set the formatted text
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textField.text = formattedNumber
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// Calculate the new cursor position
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if let newPosition = cursorPosition(textField: textField,
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range: range,
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replacementString: string,
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rawNumber: rawNumber,
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formattedNumber: formattedNumber) {
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textField.selectedTextRange = textField.textRange(from: newPosition, to: newPosition)
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}
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// if all passes, then set the number1
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creditCardRawNumber = rawNumber
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// Prevent the default behavior
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return false
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case .date:
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// Allow only numbers and limit the length of text.
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guard let oldText = textField.text,
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let textRange = Range(range, in: oldText),
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string.rangeOfCharacter(from: CharacterSet.decimalDigits.inverted) == nil else {
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return false
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}
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let newText = oldText.replacingCharacters(in: textRange, with: string)
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if newText.count > dateFormat.maxLength {
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return false
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}
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if newText.count <= dateFormat.maxLength {
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textField.text = formatDate(newText)
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return false
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} else {
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return true
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}
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case .number:
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// Allow only numbers
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let allowedCharacters = CharacterSet.decimalDigits
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let characterSet = CharacterSet(charactersIn: string)
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return allowedCharacters.isSuperset(of: characterSet)
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case .telephone:
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// Allow only numbers and limit the length of text.
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let allowedCharacters = CharacterSet(charactersIn: "01233456789")
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let characterSet = CharacterSet(charactersIn: string)
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let currentText = textField.text ?? ""
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if !allowedCharacters.isSuperset(of: characterSet) { return false }
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// Calculate the new text
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let newText = (currentText as NSString).replacingCharacters(in: range, with: string)
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// Remove any existing formatting
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let rawNumber = newText.filter { $0.isNumber }
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// Format the number with dashes
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let formattedNumber = formatUSNumber(rawNumber)
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// Set the formatted text
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textField.text = formattedNumber
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// Calculate the new cursor position
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if let newPosition = cursorPosition(textField: textField,
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range: range,
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replacementString: string,
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rawNumber: rawNumber,
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formattedNumber: formattedNumber) {
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textField.selectedTextRange = textField.textRange(from: newPosition, to: newPosition)
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}
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// Prevent the default behavior
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return false
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case .securityCode:
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// Allow only numbers and limit the length of text.
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let allowedCharacters = CharacterSet.decimalDigits
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let characterSet = CharacterSet(charactersIn: string)
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return allowedCharacters.isSuperset(of: characterSet) && ((textField.text?.count ?? 0) + string.count - range.length) <= 4
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default:
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return true
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}
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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
|
|
|
|
for index in 0..<value.count {
|
|
if indices.contains(index) {
|
|
formattedString.append(separator)
|
|
}
|
|
formattedString.append(value[currentIndex])
|
|
currentIndex = value.index(after: currentIndex)
|
|
}
|
|
|
|
return formattedString
|
|
}
|
|
|
|
}
|