101 lines
2.9 KiB
Swift
101 lines
2.9 KiB
Swift
//
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// MenuPicker.swift
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// Tusker
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//
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// Created by Shadowfacts on 11/7/22.
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// Copyright © 2022 Shadowfacts. All rights reserved.
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//
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import SwiftUI
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struct MenuPicker<Value: Hashable>: UIViewRepresentable {
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typealias UIViewType = UIButton
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@Binding var selection: Value
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let options: [Option]
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var buttonStyle: ButtonStyle = .labelAndIcon
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private var selectedOption: Option {
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options.first(where: { $0.value == selection })!
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}
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func makeUIView(context: Context) -> UIButton {
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let button = UIButton()
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button.showsMenuAsPrimaryAction = true
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button.setContentHuggingPriority(.required, for: .horizontal)
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return button
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}
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func updateUIView(_ button: UIButton, context: Context) {
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var config = UIButton.Configuration.borderless()
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if #available(iOS 16.0, *) {
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config.indicator = .popup
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}
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if buttonStyle.hasIcon {
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config.image = selectedOption.image
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}
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if buttonStyle.hasLabel {
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config.title = selectedOption.title
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}
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button.configuration = config
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button.menu = UIMenu(children: options.map { opt in
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let action = UIAction(title: opt.title, subtitle: opt.subtitle, image: opt.image, state: opt.value == selection ? .on : .off) { _ in
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selection = opt.value
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}
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action.accessibilityLabel = opt.accessibilityLabel
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return action
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})
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button.accessibilityLabel = selectedOption.accessibilityLabel ?? selectedOption.title
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button.isPointerInteractionEnabled = buttonStyle == .iconOnly
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}
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struct Option {
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let value: Value
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let title: String
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let subtitle: String?
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let image: UIImage?
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let accessibilityLabel: String?
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init(value: Value, title: String, subtitle: String? = nil, image: UIImage? = nil, accessibilityLabel: String? = nil) {
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self.value = value
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self.title = title
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self.subtitle = subtitle
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self.image = image
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self.accessibilityLabel = accessibilityLabel
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}
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}
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enum ButtonStyle {
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case labelAndIcon, labelOnly, iconOnly
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var hasLabel: Bool {
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switch self {
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case .labelAndIcon, .labelOnly:
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return true
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default:
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return false
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}
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}
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var hasIcon: Bool {
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switch self {
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case .labelAndIcon, .iconOnly:
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return true
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default:
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return false
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}
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}
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}
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}
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struct MenuPicker_Previews: PreviewProvider {
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@State static var value = 0
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static var previews: some View {
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MenuPicker(selection: $value, options: [
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.init(value: 0, title: "Zero"),
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.init(value: 1, title: "One"),
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.init(value: 2, title: "Two"),
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])
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}
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}
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