184 lines
6.5 KiB
Swift
184 lines
6.5 KiB
Swift
//
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// MainTabBarViewController.swift
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// Tusker
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//
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// Created by Shadowfacts on 8/21/18.
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// Copyright © 2018 Shadowfacts. All rights reserved.
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//
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import UIKit
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import SwiftUI
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class MainTabBarViewController: UITabBarController, UITabBarControllerDelegate {
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weak var mastodonController: MastodonController!
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private var composePlaceholder: UIViewController!
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private var fastAccountSwitcher: FastAccountSwitcherViewController!
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var selectedTab: Tab {
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return Tab(rawValue: selectedIndex)!
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}
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override var supportedInterfaceOrientations: UIInterfaceOrientationMask {
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if UIDevice.current.userInterfaceIdiom == .phone {
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return .portrait
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} else {
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return .all
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}
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}
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init(mastodonController: MastodonController) {
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self.mastodonController = mastodonController
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super.init(nibName: nil, bundle: nil)
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}
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required init?(coder: NSCoder) {
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fatalError("init(coder:) has not been implemented")
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}
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override func viewDidLoad() {
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super.viewDidLoad()
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self.delegate = self
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composePlaceholder = UIViewController()
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composePlaceholder.title = "Compose"
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composePlaceholder.tabBarItem.image = UIImage(systemName: "pencil")
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viewControllers = [
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embedInNavigationController(Tab.timelines.createViewController(mastodonController)),
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embedInNavigationController(Tab.notifications.createViewController(mastodonController)),
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composePlaceholder,
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embedInNavigationController(Tab.explore.createViewController(mastodonController)),
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embedInNavigationController(Tab.myProfile.createViewController(mastodonController)),
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]
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fastAccountSwitcher = FastAccountSwitcherViewController()
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fastAccountSwitcher.delegate = self
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fastAccountSwitcher.view.translatesAutoresizingMaskIntoConstraints = false
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view.addSubview(fastAccountSwitcher.view)
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NSLayoutConstraint.activate([
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fastAccountSwitcher.view.leadingAnchor.constraint(equalTo: view.leadingAnchor),
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fastAccountSwitcher.view.trailingAnchor.constraint(equalTo: view.trailingAnchor),
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fastAccountSwitcher.view.topAnchor.constraint(equalTo: view.topAnchor),
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fastAccountSwitcher.view.bottomAnchor.constraint(equalTo: tabBar.topAnchor),
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])
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tabBar.addGestureRecognizer(fastAccountSwitcher.createSwitcherGesture())
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let tapRecognizer = UITapGestureRecognizer(target: self, action: #selector(tabBarTapped))
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tapRecognizer.cancelsTouchesInView = false
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tabBar.addGestureRecognizer(tapRecognizer)
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tabBar.isSpringLoaded = true
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}
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@objc private func tabBarTapped(_ recognizer: UITapGestureRecognizer) {
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fastAccountSwitcher.hide()
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}
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func embedInNavigationController(_ vc: UIViewController) -> UINavigationController {
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if let vc = vc as? UINavigationController {
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return vc
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} else {
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return EnhancedNavigationViewController(rootViewController: vc)
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}
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}
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func tabBarController(_ tabBarController: UITabBarController, shouldSelect viewController: UIViewController) -> Bool {
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if viewController == composePlaceholder {
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presentCompose()
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return false
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}
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if viewController == viewControllers![selectedIndex],
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let nav = viewController as? UINavigationController,
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nav.viewControllers.count == 1,
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let scrollableVC = nav.viewControllers.first as? TabBarScrollableViewController {
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scrollableVC.tabBarScrollToTop()
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return false
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}
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return true
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}
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func setViewController(_ viewController: UIViewController, forTab tab: Tab) {
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viewControllers![tab.rawValue] = viewController
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}
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func viewController(for tab: Tab) -> UIViewController {
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return viewControllers![tab.rawValue]
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}
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}
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extension MainTabBarViewController {
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enum Tab: Int, Hashable, CaseIterable {
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case timelines
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case notifications
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case compose
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case explore
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case myProfile
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func createViewController(_ mastodonController: MastodonController) -> UIViewController {
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switch self {
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case .timelines:
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return TimelinesPageViewController(mastodonController: mastodonController)
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case .notifications:
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return NotificationsPageViewController(mastodonController: mastodonController)
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case .compose:
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return ComposeHostingController(mastodonController: mastodonController)
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case .explore:
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return ExploreViewController(mastodonController: mastodonController)
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case .myProfile:
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return MyProfileViewController(mastodonController: mastodonController)
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}
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}
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}
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func getTabController(tab: Tab) -> UIViewController? {
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if tab == .compose {
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return nil
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} else {
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return viewControllers![tab.rawValue]
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}
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}
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}
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extension MainTabBarViewController: FastAccountSwitcherViewControllerDelegate {
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func fastAccountSwitcher(_ fastAccountSwitcher: FastAccountSwitcherViewController, triggerZoneContains point: CGPoint) -> Bool {
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let tabBarButtons = tabBar.subviews.filter { String(describing: type(of: $0)).lowercased().contains("button") }
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// sanity check that there is 1 button per VC
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guard tabBarButtons.count == viewControllers!.count,
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let myProfileButton = tabBarButtons.last else {
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return false
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}
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let locationInButton = myProfileButton.convert(point, from: fastAccountSwitcher.view)
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return myProfileButton.bounds.contains(locationInButton)
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}
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}
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extension MainTabBarViewController: TuskerRootViewController {
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@objc func presentCompose() {
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let vc = ComposeHostingController(mastodonController: mastodonController)
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let nav = EnhancedNavigationViewController(rootViewController: vc)
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nav.presentationController?.delegate = vc
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present(nav, animated: true)
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}
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func select(tab: Tab) {
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if tab == .compose {
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presentCompose()
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} else {
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selectedIndex = tab.rawValue
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}
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}
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}
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extension MainTabBarViewController: BackgroundableViewController {
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func sceneDidEnterBackground() {
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if let selectedVC = selectedViewController as? BackgroundableViewController {
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selectedVC.sceneDidEnterBackground()
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}
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}
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}
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