319 lines
11 KiB
Swift
319 lines
11 KiB
Swift
//
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// GamesViewController.swift
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// Delta
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//
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// Created by Riley Testut on 10/12/15.
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// Copyright © 2015 Riley Testut. All rights reserved.
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//
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import UIKit
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import CoreData
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import DeltaCore
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import Roxas
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extension GamesViewController
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{
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enum Theme
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{
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case light
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case dark
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}
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}
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class GamesViewController: UIViewController
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{
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var theme: Theme = .light {
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didSet {
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self.updateTheme()
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}
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}
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weak var activeEmulatorCore: EmulatorCore?
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fileprivate var pageViewController: UIPageViewController!
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fileprivate var backgroundView: RSTBackgroundView!
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fileprivate var pageControl: UIPageControl!
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fileprivate let fetchedResultsController: NSFetchedResultsController<NSFetchRequestResult>
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override init(nibName nibNameOrNil: String?, bundle nibBundleOrNil: Bundle?) {
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fatalError("initWithNibName: not implemented")
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}
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required init?(coder aDecoder: NSCoder)
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{
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let fetchRequest = GameCollection.rst_fetchRequest()
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fetchRequest.sortDescriptors = [NSSortDescriptor(key: #keyPath(GameCollection.index), ascending: true)]
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self.fetchedResultsController = NSFetchedResultsController(fetchRequest: fetchRequest, managedObjectContext: DatabaseManager.shared.viewContext, sectionNameKeyPath: nil, cacheName: nil)
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super.init(coder: aDecoder)
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self.fetchedResultsController.delegate = self
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self.automaticallyAdjustsScrollViewInsets = false
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}
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}
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//MARK: - UIViewController -
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/// UIViewController
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extension GamesViewController
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{
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override func viewDidLoad()
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{
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super.viewDidLoad()
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self.backgroundView = RSTBackgroundView(frame: self.view.bounds)
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self.backgroundView.autoresizingMask = [.flexibleWidth, .flexibleHeight]
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self.backgroundView.textLabel.text = NSLocalizedString("No Games", comment: "")
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self.backgroundView.detailTextLabel.text = NSLocalizedString("You can import games by pressing the + button in the top right.", comment: "")
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self.view.insertSubview(self.backgroundView, at: 0)
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self.pageControl = UIPageControl()
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self.pageControl.translatesAutoresizingMaskIntoConstraints = false
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self.pageControl.hidesForSinglePage = false
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self.pageControl.numberOfPages = 3
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self.pageControl.currentPageIndicatorTintColor = UIColor.deltaPurpleColor()
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self.pageControl.pageIndicatorTintColor = UIColor.lightGray
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self.navigationController?.toolbar.addSubview(self.pageControl)
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self.pageControl.centerXAnchor.constraint(equalTo: (self.navigationController?.toolbar.centerXAnchor)!, constant: 0).isActive = true
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self.pageControl.centerYAnchor.constraint(equalTo: (self.navigationController?.toolbar.centerYAnchor)!, constant: 0).isActive = true
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}
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override func viewWillAppear(_ animated: Bool)
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{
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super.viewWillAppear(animated)
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if self.fetchedResultsController.performFetchIfNeeded()
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{
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self.updateSections(animated: false)
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}
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DispatchQueue.global().async {
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self.activeEmulatorCore?.stop()
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}
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}
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override func viewDidLayoutSubviews()
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{
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super.viewDidLayoutSubviews()
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if let viewControllers = self.pageViewController.viewControllers as? [GameCollectionViewController]
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{
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for viewController in viewControllers
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{
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viewController.collectionView?.contentInset.top = self.topLayoutGuide.length
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}
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}
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}
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override func didReceiveMemoryWarning()
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{
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super.didReceiveMemoryWarning()
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// Dispose of any resources that can be recreated.
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}
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}
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// MARK: - Segues -
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/// Segues
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extension GamesViewController
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{
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// In a storyboard-based application, you will often want to do a little preparation before navigation
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override func prepare(for segue: UIStoryboardSegue, sender: Any?)
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{
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guard let identifier = segue.identifier, identifier == "embedPageViewController" else { return }
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self.pageViewController = segue.destination as! UIPageViewController
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self.pageViewController.dataSource = self
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self.pageViewController.delegate = self
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self.pageViewController.view.isHidden = true
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}
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@IBAction private func unwindFromSettingsViewController(_ segue: UIStoryboardSegue)
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{
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}
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}
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// MARK: - UI -
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/// UI
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private extension GamesViewController
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{
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func updateTheme()
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{
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switch self.theme
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{
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case .light:
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self.view.backgroundColor = UIColor.white
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self.navigationController?.navigationBar.barStyle = .default
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self.navigationController?.toolbar.barStyle = .default
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case .dark:
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self.view.backgroundColor = nil
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self.navigationController?.navigationBar.barStyle = .blackTranslucent
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self.navigationController?.toolbar.barStyle = .blackTranslucent
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}
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if let viewControllers = self.pageViewController.viewControllers as? [GameCollectionViewController]
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{
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for collectionViewController in viewControllers
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{
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collectionViewController.theme = self.theme
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}
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}
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}
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}
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// MARK: - Helper Methods -
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private extension GamesViewController
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{
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func viewControllerForIndex(_ index: Int) -> GameCollectionViewController?
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{
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guard let pages = self.fetchedResultsController.sections?.first?.numberOfObjects, pages > 0 else { return nil }
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// Return nil if only one section, and not asking for the 0th view controller
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guard !(pages == 1 && index != 0) else { return nil }
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var safeIndex = index % pages
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if safeIndex < 0
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{
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safeIndex = pages + safeIndex
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}
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let indexPath = IndexPath(row: safeIndex, section: 0)
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let viewController = self.storyboard?.instantiateViewController(withIdentifier: "gameCollectionViewController") as! GameCollectionViewController
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viewController.gameCollection = self.fetchedResultsController.object(at: indexPath) as! GameCollection
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viewController.theme = self.theme
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viewController.activeEmulatorCore = self.activeEmulatorCore
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// Need to set content inset here AND willTransitionTo callback to ensure its correct for all edge cases
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viewController.collectionView?.contentInset.top = self.topLayoutGuide.length
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return viewController
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}
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func updateSections(animated: Bool)
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{
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let sections = self.fetchedResultsController.sections?.first?.numberOfObjects ?? 0
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self.pageControl.numberOfPages = sections
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var resetPageViewController = false
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if let viewController = pageViewController.viewControllers?.first as? GameCollectionViewController, let gameCollection = viewController.gameCollection
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{
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if let index = self.fetchedResultsController.fetchedObjects?.index(where: { $0 as! GameCollection == gameCollection })
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{
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self.pageControl.currentPage = index
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}
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else
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{
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resetPageViewController = true
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self.pageControl.currentPage = 0
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}
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}
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self.navigationController?.setToolbarHidden(sections < 2, animated: animated)
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if sections > 0
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{
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// Reset page view controller if currently hidden or current child should view controller no longer exists
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if self.pageViewController.view.isHidden || resetPageViewController
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{
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if let viewController = self.viewControllerForIndex(0)
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{
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self.pageViewController.view.setHidden(false, animated: animated)
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self.backgroundView.setHidden(true, animated: animated)
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self.pageViewController.setViewControllers([viewController], direction: .forward, animated: false, completion: nil)
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self.title = viewController.title
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}
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}
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else
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{
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self.pageViewController.setViewControllers(self.pageViewController.viewControllers, direction: .forward, animated: false, completion: nil)
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}
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}
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else
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{
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self.title = NSLocalizedString("Games", comment: "")
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self.pageViewController.view.setHidden(true, animated: animated)
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self.backgroundView.setHidden(false, animated: animated)
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}
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}
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}
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//MARK: - Importing -
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/// Importing
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extension GamesViewController: GamePickerControllerDelegate
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{
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@IBAction fileprivate func importFiles()
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{
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let gamePickerController = GamePickerController()
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gamePickerController.delegate = self
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self.presentGamePickerController(gamePickerController, animated: true, completion: nil)
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}
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//MARK: - GamePickerControllerDelegate
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func gamePickerController(_ gamePickerController: GamePickerController, didImportGames games: [Game])
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{
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print(games)
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}
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}
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//MARK: - UIPageViewController -
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/// UIPageViewController
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extension GamesViewController: UIPageViewControllerDataSource, UIPageViewControllerDelegate
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{
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//MARK: - UIPageViewControllerDataSource
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func pageViewController(_ pageViewController: UIPageViewController, viewControllerBefore viewController: UIViewController) -> UIViewController?
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{
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let viewController = self.viewControllerForIndex(self.pageControl.currentPage - 1)
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return viewController
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}
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func pageViewController(_ pageViewController: UIPageViewController, viewControllerAfter viewController: UIViewController) -> UIViewController?
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{
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let viewController = self.viewControllerForIndex(self.pageControl.currentPage + 1)
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return viewController
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}
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//MARK: - UIPageViewControllerDelegate
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func pageViewController(_ pageViewController: UIPageViewController, willTransitionTo pendingViewControllers: [UIViewController])
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{
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guard let viewControllers = pendingViewControllers as? [GameCollectionViewController] else { return }
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for viewController in viewControllers
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{
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viewController.collectionView?.contentInset.top = self.topLayoutGuide.length
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}
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}
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func pageViewController(_ pageViewController: UIPageViewController, didFinishAnimating finished: Bool, previousViewControllers: [UIViewController], transitionCompleted completed: Bool)
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{
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if let viewController = pageViewController.viewControllers?.first as? GameCollectionViewController, let gameCollection = viewController.gameCollection
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{
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let index = self.fetchedResultsController.fetchedObjects?.index(where: { $0 as! GameCollection == gameCollection }) ?? 0
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self.pageControl.currentPage = index
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}
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self.title = pageViewController.viewControllers?.first?.title
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}
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}
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//MARK: - NSFetchedResultsControllerDelegate -
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/// NSFetchedResultsControllerDelegate
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extension GamesViewController: NSFetchedResultsControllerDelegate
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{
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func controllerDidChangeContent(_ controller: NSFetchedResultsController<NSFetchRequestResult>)
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{
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self.updateSections(animated: true)
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}
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}
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