127 lines
4.4 KiB
Swift
127 lines
4.4 KiB
Swift
//
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// TextLink.swift
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// VDS
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//
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// Created by Matt Bruce on 11/1/22.
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//
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import Foundation
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import UIKit
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import VDSColorTokens
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import VDSFormControlsTokens
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import Combine
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/// A text link is an interactive element that navigates a customer to pages within an experience, like a “Bill details” page, or triggers a secondary action,
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/// like canceling a task. This class can be used within a ``ButtonGroup``.
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///
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/// If you are using AutoLayoutConstraints you have a combination of Leading/Left and Trailing/Right NSLayoutConstraints,
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/// you need to ensure that one of these Horizontal Contraints is not constraint of "equatTo". If you are to pin the left/right edges
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/// to its parent this object will stretch to the parent's width.
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@objc(VDSTextLink)
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open class TextLink: ButtonBase, Buttonable {
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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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private var lineHeightConstraint: NSLayoutConstraint?
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private var line = UIView().with {
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$0.translatesAutoresizingMaskIntoConstraints = false
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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 size: ButtonSize = .large { didSet { if oldValue != size { setNeedsUpdate() } } }
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/// The ButtonSize available to this type of Buttonable.
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open override var availableSizes: [ButtonSize] { [.large, .small] }
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open override var textStyle: TextStyle {
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size == .large ? TextStyle.bodyLarge : TextStyle.bodySmall
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}
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/// UIColor used on the titleLabel text.
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open override var textColor: UIColor {
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textColorConfiguration.getColor(self)
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}
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private var textColorConfiguration = 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.interactiveActiveOnlight, VDSColor.interactiveActiveOndark, forState: .highlighted)
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}
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private var height: CGFloat {
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switch size {
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case .large:
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return 44
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case .small:
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return 32
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}
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}
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/// The natural size for the receiving view, considering only properties of the view itself.
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open override var intrinsicContentSize: CGSize {
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return titleLabel?.intrinsicContentSize ?? super.intrinsicContentSize
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}
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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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accessibilityTraits = .link
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if let titleLabel {
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addSubview(line)
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line.pinLeading(titleLabel.leadingAnchor)
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line.pinTrailing(titleLabel.trailingAnchor)
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line.pinTop(titleLabel.bottomAnchor)
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line.pinBottom(bottomAnchor, 0, .defaultHigh)
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lineHeightConstraint = line.height(constant: 1)
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lineHeightConstraint?.isActive = true
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}
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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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//need to set the properties so the super class
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//can render out the label correctly
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line.backgroundColor = textColor
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//always call last so the label is rendered
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super.updateView()
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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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shouldUpdateView = false
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text = nil
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size = .large
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accessibilityCustomActions = []
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isAccessibilityElement = true
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accessibilityTraits = .link
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shouldUpdateView = true
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setNeedsUpdate()
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}
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}
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