411 lines
16 KiB
Swift
411 lines
16 KiB
Swift
//
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// EntryField.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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/// Base Class used to build out a Input controls.
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@objc(VDSEntryField)
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open class EntryFieldBase: Control, Changeable, FormFieldInternalValidatable {
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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: - Enums
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//--------------------------------------------------
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/// Enum used to describe the position of the helper text.
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public enum HelperTextPlacement: String, CaseIterable {
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case bottom, right
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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 stackView: UIStackView = {
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return UIStackView().with {
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$0.translatesAutoresizingMaskIntoConstraints = false
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$0.axis = .vertical
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$0.distribution = .fill
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}
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}()
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internal var containerView: UIView = {
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return UIView().with {
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$0.translatesAutoresizingMaskIntoConstraints = false
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}
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}()
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internal var containerStackView: 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.alignment = .top
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}
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}()
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internal var controlContainerView: UIView = {
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return UIView().with {
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$0.translatesAutoresizingMaskIntoConstraints = false
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}
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}()
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internal var bottomContainerView: UIView = {
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return UIView().with {
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$0.translatesAutoresizingMaskIntoConstraints = false
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}
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}()
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internal var bottomContainerStackView: UIStackView = {
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return UIStackView().with {
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$0.translatesAutoresizingMaskIntoConstraints = false
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$0.axis = .vertical
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$0.distribution = .fill
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}
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}()
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open var rules = [AnyRule<String>]()
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//--------------------------------------------------
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// MARK: - Configuration Properties
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//--------------------------------------------------
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// Sizes are from InVision design specs.
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internal var containerSize: CGSize { CGSize(width: 45, height: 44) }
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internal let primaryColorConfiguration = 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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}
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internal let secondaryColorConfiguration = ViewColorConfiguration().with {
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$0.setSurfaceColors(VDSColor.interactiveDisabledOnlight, VDSColor.interactiveDisabledOndark, forDisabled: true)
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$0.setSurfaceColors(VDSColor.elementsSecondaryOnlight, VDSColor.elementsSecondaryOndark, forDisabled: false)
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}
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internal var backgroundColorConfiguration = ControlColorConfiguration().with {
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$0.setSurfaceColors(VDSFormControlsColor.backgroundOnlight, VDSFormControlsColor.backgroundOndark, forState: .normal)
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$0.setSurfaceColors(VDSFormControlsColor.backgroundOnlight, VDSFormControlsColor.backgroundOndark, forState: .disabled)
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$0.setSurfaceColors(VDSColor.feedbackErrorBackgroundOnlight, VDSColor.feedbackErrorBackgroundOndark, forState: .error)
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$0.setSurfaceColors(VDSColor.feedbackErrorBackgroundOnlight, VDSColor.feedbackErrorBackgroundOndark, forState: [.error, .focused])
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}
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internal var borderColorConfiguration = ControlColorConfiguration().with {
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$0.setSurfaceColors(VDSFormControlsColor.borderOnlight, VDSFormControlsColor.borderOndark, forState: .normal)
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$0.setSurfaceColors(VDSColor.elementsPrimaryOnlight, VDSColor.elementsPrimaryOnlight, forState: .focused)
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$0.setSurfaceColors(VDSColor.elementsPrimaryOnlight, VDSColor.elementsPrimaryOnlight, forState: [.focused, .error])
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$0.setSurfaceColors(VDSColor.interactiveDisabledOnlight, VDSColor.interactiveDisabledOndark, forState: .disabled)
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$0.setSurfaceColors(VDSColor.feedbackErrorOnlight, VDSColor.feedbackErrorOndark, forState: .error)
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$0.setSurfaceColors(VDSColor.interactiveDisabledOnlight, VDSColor.interactiveDisabledOndark, forState: [.disabled,.error])
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}
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internal let iconColorConfiguration = ControlColorConfiguration().with {
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$0.setSurfaceColors(VDSColor.elementsPrimaryOnlight, VDSColor.elementsPrimaryOndark, forState: .normal)
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$0.setSurfaceColors(VDSColor.interactiveDisabledOnlight, VDSColor.interactiveDisabledOndark, forState: .disabled)
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$0.setSurfaceColors(VDSColor.elementsPrimaryOnlight, VDSColor.elementsPrimaryOndark, forState: .error)
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}
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internal var readOnlyBorderColorConfiguration = ControlColorConfiguration().with {
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$0.setSurfaceColors(VDSFormControlsColor.borderReadonlyOnlight, VDSFormControlsColor.borderReadonlyOndark, forState: .normal)
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}
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//--------------------------------------------------
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// MARK: - Public Properties
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//--------------------------------------------------
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open var onChangeSubscriber: AnyCancellable?
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open var titleLabel = 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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open var errorLabel = Label().with {
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$0.setContentCompressionResistancePriority(.required, for: .vertical)
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$0.textStyle = .bodySmall
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$0.accessibilityValue = "error"
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}
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open var helperLabel = 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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open var statusIcon: Icon = Icon().with {
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$0.size = .medium
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}
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open var labelText: String? { didSet { setNeedsUpdate() } }
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open var helperText: String? { didSet { setNeedsUpdate() } }
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/// Whether not to show the error.
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open var showError: Bool = false { didSet { setNeedsUpdate() } }
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/// FormFieldValidator
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open var validator: (any FormFieldValidatorable)?
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/// Override UIControl state to add the .error state 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 showError || hasInternalError {
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state.insert(.error)
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}
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return state
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}
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}
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open var errorText: String? { didSet { setNeedsUpdate() } }
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open var tooltipModel: Tooltip.TooltipModel? { didSet { setNeedsUpdate() } }
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open var transparentBackground: Bool = false { didSet { setNeedsUpdate() } }
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open var width: CGFloat? { didSet { setNeedsUpdate() } }
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open var inputId: String? { didSet { setNeedsUpdate() } }
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/// The text of this textField.
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open var value: String? {
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get { fatalError("must be read from subclass")}
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}
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open var defaultValue: AnyHashable? { didSet { setNeedsUpdate() } }
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open var required: Bool = false { didSet { validate() } }
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open var readOnly: Bool = false { didSet { setNeedsUpdate() } }
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//--------------------------------------------------
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// MARK: - Constraints
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//--------------------------------------------------
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internal var heightConstraint: NSLayoutConstraint?
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internal var widthConstraint: NSLayoutConstraint?
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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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isAccessibilityElement = true
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addSubview(stackView)
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//create the wrapping view
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heightConstraint = containerView.heightAnchor.constraint(greaterThanOrEqualToConstant: containerSize.height)
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heightConstraint?.priority = .defaultHigh
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heightConstraint?.isActive = true
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widthConstraint = containerView.widthAnchor.constraint(equalToConstant: 0)
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widthConstraint?.priority = .defaultHigh
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//get the container this is what is color
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//border, internal, etc...
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let container = getContainer()
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//add ContainerStackView
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//this is the horizontal stack that contains
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//the left, InputContainer, Icons, Buttons
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container.addSubview(containerStackView)
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containerStackView.pinToSuperView(.uniform(VDSLayout.space3X))
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//add the view to add input fields
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containerStackView.addArrangedSubview(controlContainerView)
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containerStackView.addArrangedSubview(statusIcon)
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containerStackView.setCustomSpacing(VDSLayout.space3X, after: controlContainerView)
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//get the container this is what show helper text, error text
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//can include other for character count, max length
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let bottomContainer = getBottomContainer()
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//add bottomContainerStackView
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//this is the vertical stack that contains error text, helper text
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bottomContainerView.addSubview(bottomContainerStackView)
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bottomContainerStackView.pinToSuperView()
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bottomContainerStackView.addArrangedSubview(errorLabel)
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bottomContainerStackView.addArrangedSubview(helperLabel)
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stackView.addArrangedSubview(titleLabel)
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stackView.addArrangedSubview(container)
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stackView.addArrangedSubview(bottomContainer)
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stackView.setCustomSpacing(4, after: titleLabel)
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stackView.setCustomSpacing(8, after: container)
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stackView.setCustomSpacing(8, after: bottomContainer)
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stackView
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.pinTop()
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.pinLeading()
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.pinTrailing(0, .defaultHigh)
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.pinBottom(0, .defaultHigh)
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titleLabel.textColorConfiguration = primaryColorConfiguration.eraseToAnyColorable()
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errorLabel.textColorConfiguration = primaryColorConfiguration.eraseToAnyColorable()
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helperLabel.textColorConfiguration = secondaryColorConfiguration.eraseToAnyColorable()
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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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titleLabel.reset()
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errorLabel.reset()
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helperLabel.reset()
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titleLabel.textStyle = .bodySmall
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errorLabel.textStyle = .bodySmall
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helperLabel.textStyle = .bodySmall
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labelText = nil
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helperText = nil
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showError = false
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errorText = nil
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tooltipModel = nil
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transparentBackground = false
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width = nil
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inputId = nil
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defaultValue = nil
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required = false
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readOnly = false
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onChange = nil
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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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super.updateView()
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updateContainerView()
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updateTitleLabel()
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updateErrorLabel()
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updateHelperLabel()
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}
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open func validate(){
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updateRules()
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validator = FormFieldValidator<EntryFieldBase>(field: self, rules: rules)
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validator?.validate()
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setNeedsUpdate()
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}
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//--------------------------------------------------
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// MARK: - Private Methods
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//--------------------------------------------------
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private func updateContainerView() {
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containerView.backgroundColor = backgroundColorConfiguration.getColor(self)
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containerView.layer.borderColor = readOnly ? readOnlyBorderColorConfiguration.getColor(self).cgColor : borderColorConfiguration.getColor(self).cgColor
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containerView.layer.borderWidth = VDSFormControls.borderWidth
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containerView.layer.cornerRadius = VDSFormControls.borderRadius
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}
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//--------------------------------------------------
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// MARK: - Public Methods
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//--------------------------------------------------
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/// Container for the area in which the user interacts.
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open func getContainer() -> UIView {
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return containerView
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}
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/// Container for the area in which helper or error text presents.
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open func getBottomContainer() -> UIView {
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return bottomContainerView
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}
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internal func updateRules() {
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rules.removeAll()
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if self.required {
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let rule = RequiredRule()
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if let errorText, !errorText.isEmpty {
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rule.errorMessage = errorText
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} else if let labelText{
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rule.errorMessage = "You must enter a \(labelText)"
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} else {
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rule.errorMessage = "You must enter a value"
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}
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rules.append(.init(rule))
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}
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}
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open func updateTitleLabel() {
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//update the local vars for the label since we no
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//long have a model
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var attributes: [any LabelAttributeModel] = []
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var updatedLabelText = labelText
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//dealing with the "Optional" addition to the text
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if let oldText = updatedLabelText, !required, !oldText.hasSuffix("Optional") {
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if isEnabled {
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let optionColorAttr = ColorLabelAttribute(location: oldText.count + 2,
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length: 8,
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color: VDSColor.elementsSecondaryOnlight)
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attributes.append(optionColorAttr)
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}
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updatedLabelText = "\(oldText) Optional"
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}
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if let tooltipModel {
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attributes.append(TooltipLabelAttribute(surface: surface, model: tooltipModel, presenter: self))
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}
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//set the titleLabel
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titleLabel.text = updatedLabelText
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titleLabel.attributes = attributes
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titleLabel.surface = surface
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titleLabel.isEnabled = isEnabled
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}
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open func updateErrorLabel(){
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if showError, let errorText {
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errorLabel.text = errorText
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errorLabel.surface = surface
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errorLabel.isEnabled = isEnabled
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errorLabel.isHidden = false
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statusIcon.name = .error
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statusIcon.surface = surface
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statusIcon.isHidden = !isEnabled || state.contains(.focused)
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} else if hasInternalError, let internalErrorText {
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errorLabel.text = internalErrorText
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errorLabel.surface = surface
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errorLabel.isEnabled = isEnabled
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errorLabel.isHidden = false
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statusIcon.name = .error
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statusIcon.surface = surface
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statusIcon.isHidden = !isEnabled || state.contains(.focused)
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} else {
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statusIcon.isHidden = true
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errorLabel.isHidden = true
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}
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statusIcon.color = iconColorConfiguration.getColor(self)
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}
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open func updateHelperLabel(){
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//set the helper label position
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if let helperText {
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helperLabel.text = helperText
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helperLabel.surface = surface
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helperLabel.isEnabled = isEnabled
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helperLabel.isHidden = false
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} else {
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helperLabel.isHidden = true
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}
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}
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}
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