107 lines
3.3 KiB
Swift
107 lines
3.3 KiB
Swift
//
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// PagerTabStripNavigateable.swift
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// Mastodon
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//
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// Created by MainasuK on 2022-6-2.
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//
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import UIKit
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import XLPagerTabStrip
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import MastodonLocalization
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typealias PagerTabStripNavigateable = PagerTabStripNavigateableCore & PagerTabStripNavigateableRelay
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protocol PagerTabStripNavigateableCore: AnyObject {
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var navigateablePageViewController: PagerTabStripViewController { get }
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var pagerTabStripNavigateKeyCommands: [UIKeyCommand] { get }
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func pagerTabStripNavigateKeyCommandHandler(_ sender: UIKeyCommand)
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func navigate(direction: PagerTabStripNavigationDirection)
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}
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@objc protocol PagerTabStripNavigateableRelay: AnyObject {
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func pagerTabStripNavigateKeyCommandHandlerRelay(_ sender: UIKeyCommand)
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}
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enum PagerTabStripNavigationDirection: 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 PagerTabStripNavigateableCore where Self: PagerTabStripNavigateableRelay {
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var pagerTabStripNavigateKeyCommands: [UIKeyCommand] {
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PagerTabStripNavigationDirection.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.pagerTabStripNavigateKeyCommandHandlerRelay(_:)),
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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 pagerTabStripNavigateKeyCommandHandler(_ sender: UIKeyCommand) {
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guard let rawValue = sender.propertyList as? String,
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let direction = PagerTabStripNavigationDirection(rawValue: rawValue) else { return }
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navigate(direction: direction)
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}
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}
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extension PagerTabStripNavigateableCore {
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func navigate(direction: PagerTabStripNavigationDirection) {
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let index = navigateablePageViewController.currentIndex
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let targetIndex: Int
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switch direction {
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case .previous:
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targetIndex = index - 1
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case .next:
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targetIndex = index + 1
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}
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guard targetIndex >= 0,
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!navigateablePageViewController.viewControllers.isEmpty,
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targetIndex < navigateablePageViewController.viewControllers.count,
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navigateablePageViewController.canMoveTo(index: targetIndex)
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else {
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return
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}
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navigateablePageViewController.moveToViewController(at: targetIndex)
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}
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}
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