98 lines
3.2 KiB
Swift
98 lines
3.2 KiB
Swift
//
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// SegmentedControlNavigateable.swift
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// Mastodon
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//
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// Created by MainasuK Cirno on 2021-5-21.
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//
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import UIKit
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import MastodonAsset
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import MastodonLocalization
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typealias SegmentedControlNavigateable = SegmentedControlNavigateableCore & SegmentedControlNavigateableRelay
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protocol SegmentedControlNavigateableCore: AnyObject {
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var navigateableSegmentedControl: UISegmentedControl { get }
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var segmentedControlNavigateKeyCommands: [UIKeyCommand] { get }
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func segmentedControlNavigateKeyCommandHandler(_ sender: UIKeyCommand)
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func navigate(direction: SegmentedControlNavigationDirection)
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}
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@objc protocol SegmentedControlNavigateableRelay: AnyObject {
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func segmentedControlNavigateKeyCommandHandlerRelay(_ sender: UIKeyCommand)
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}
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enum SegmentedControlNavigationDirection: String, CaseIterable {
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case previous
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case next
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var title: String {
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switch self {
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case .previous: return L10n.Common.Controls.Keyboard.SegmentedControl.previousSection
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case .next: return L10n.Common.Controls.Keyboard.SegmentedControl.nextSection
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}
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}
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// UIKeyCommand input
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var input: String {
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switch self {
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case .previous: return "["
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case .next: return "]"
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}
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}
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var modifierFlags: UIKeyModifierFlags {
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switch self {
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case .previous: return [.shift, .command]
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case .next: return [.shift, .command]
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}
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}
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var propertyList: Any {
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return rawValue
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}
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}
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extension SegmentedControlNavigateableCore where Self: SegmentedControlNavigateableRelay {
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var segmentedControlNavigateKeyCommands: [UIKeyCommand] {
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SegmentedControlNavigationDirection.allCases.map { direction in
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UIKeyCommand(
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title: direction.title,
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image: nil,
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action: #selector(Self.segmentedControlNavigateKeyCommandHandlerRelay(_:)),
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input: direction.input,
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modifierFlags: direction.modifierFlags,
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propertyList: direction.propertyList,
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alternates: [],
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discoverabilityTitle: nil,
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attributes: [],
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state: .off
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)
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}
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}
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func segmentedControlNavigateKeyCommandHandler(_ sender: UIKeyCommand) {
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guard let rawValue = sender.propertyList as? String,
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let direction = SegmentedControlNavigationDirection(rawValue: rawValue) else { return }
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navigate(direction: direction)
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}
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}
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extension SegmentedControlNavigateableCore {
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func navigate(direction: SegmentedControlNavigationDirection) {
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let index: Int = {
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let selectedIndex = navigateableSegmentedControl.selectedSegmentIndex
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switch direction {
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case .previous: return selectedIndex - 1
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case .next: return selectedIndex + 1
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}
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}()
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guard 0..<navigateableSegmentedControl.numberOfSegments ~= index else { return }
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navigateableSegmentedControl.selectedSegmentIndex = index
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navigateableSegmentedControl.sendActions(for: .valueChanged)
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}
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}
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