149 lines
4.9 KiB
Swift
149 lines
4.9 KiB
Swift
//
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// TextLinkCaret.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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@objc(VDSTextLinkCaret)
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open class TextLinkCaret: ButtonBase {
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//--------------------------------------------------
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// MARK: - Enums
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//--------------------------------------------------
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public enum IconPosition: String, CaseIterable {
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case left, right
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}
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//--------------------------------------------------
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// MARK: - Private Properties
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//--------------------------------------------------
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open override var textStyle: TextStyle {
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TextStyle.boldBodyLarge
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}
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private var imageAttribute: ImageSpaceLabelAttribute?
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open override var attributes: [any LabelAttributeModel]? {
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guard let imageAttribute else { return nil }
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return [imageAttribute]
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}
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//--------------------------------------------------
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// MARK: - Properties
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//--------------------------------------------------
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public override var availableSizes: [ButtonSize] { [.large] }
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open var iconPosition: IconPosition = .right { didSet { setNeedsUpdate() } }
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private var height: CGFloat {
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44
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}
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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.elementsSecondaryOnlight, VDSColor.elementsSecondaryOndark, forState: .disabled)
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$0.setSurfaceColors(VDSColor.interactiveActiveOnlight, VDSColor.interactiveActiveOndark, forState: .highlighted)
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}
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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: - Public Functions
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//--------------------------------------------------
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open override func setup() {
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super.setup()
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}
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open override func reset() {
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super.reset()
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iconPosition = .right
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text = nil
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}
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//--------------------------------------------------
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// MARK: - Overrides
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//--------------------------------------------------
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override open var intrinsicContentSize: CGSize {
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//get the labels size, if not the button
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let size = titleLabel?.intrinsicContentSize ?? super.intrinsicContentSize
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var itemWidth = size.width
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if let caretWidth = imageAttribute?.width {
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itemWidth += caretWidth
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}
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return CGSize(width: itemWidth, height: size.height)
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}
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open override func updateView() {
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let updatedText = text ?? ""
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imageAttribute = ImageSpaceLabelAttribute(tintColor: textColor, position: iconPosition)
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super.updateView()
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}
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}
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extension TextLinkCaret {
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struct ImageSpaceLabelAttribute: LabelAttributeModel {
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var id: UUID = .init()
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var location: Int = 0
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var length: Int = 1
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var tintColor: UIColor
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var position: IconPosition
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var spacerWidth: CGFloat = 2.0
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var width: CGFloat { caretSize.width + spacerWidth }
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var caretSize: CGSize { Icon.Size.xsmall.dimensions }
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init(tintColor: UIColor, position: IconPosition) {
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self.tintColor = tintColor
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self.position = position
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}
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func setAttribute(on attributedString: NSMutableAttributedString) {
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let imageAttr = ImageLabelAttribute(location: location, imageName: "\(position.rawValue)-caret-bold", frame: .init(x: 0, y: 0, width: caretSize.width, height: caretSize.height), tintColor: tintColor)
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let spaceAttr = ImageLabelAttribute(location: 0, imageName: "info", frame: .init(x: 0, y: 0, width: spacerWidth, height: 5.0), tintColor: .clear)
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guard let image = try? imageAttr.getAttachment(),
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let spacer = try? spaceAttr.getAttachment() else { return }
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if position == .right {
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attributedString.append(NSAttributedString(attachment: spacer))
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attributedString.append(NSAttributedString(attachment: image))
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} else {
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attributedString.insert(NSAttributedString(attachment: image), at: 0)
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attributedString.insert(NSAttributedString(attachment: spacer), at: 1)
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}
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}
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func isEqual(_ equatable: ImageSpaceLabelAttribute) -> Bool {
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return id == equatable.id && range == equatable.range
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}
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}
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}
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