739 lines
29 KiB
Swift
739 lines
29 KiB
Swift
//
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// SaveStatesViewController.swift
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// Delta
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//
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// Created by Riley Testut on 1/23/16.
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// Copyright © 2016 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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protocol SaveStatesViewControllerDelegate: class
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{
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func saveStatesViewController(_ saveStatesViewController: SaveStatesViewController, updateSaveState saveState: SaveState)
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func saveStatesViewController(_ saveStatesViewController: SaveStatesViewController, loadSaveState saveState: SaveStateProtocol)
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}
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extension SaveStatesViewController
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{
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enum Mode
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{
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case saving
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case loading
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}
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enum Section: Int
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{
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case auto
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case general
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case locked
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}
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}
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class SaveStatesViewController: UICollectionViewController
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{
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var game: Game! {
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didSet {
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self.updateFetchedResultsController()
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}
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}
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// Reference to a current EmulatorCore. emulatorCore.game does _not_ have to match self.game
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var emulatorCore: EmulatorCore?
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weak var delegate: SaveStatesViewControllerDelegate?
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var mode = Mode.loading
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private var backgroundView: RSTBackgroundView!
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private var prototypeCell = GridCollectionViewCell()
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private var prototypeCellWidthConstraint: NSLayoutConstraint!
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private var prototypeHeader = SaveStatesCollectionHeaderView()
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private var fetchedResultsController: NSFetchedResultsController<NSFetchRequestResult>!
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private let imageOperationQueue = RSTOperationQueue()
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private let imageCache = Cache<URL, UIImage>()
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private var emulatorCoreSaveState: SaveStateProtocol?
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private var selectedSaveState: SaveState?
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private let dateFormatter: DateFormatter
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private let previewGameViewController = GameViewController()
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private var previewInteraction: UIPreviewInteraction!
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required init?(coder aDecoder: NSCoder)
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{
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self.dateFormatter = DateFormatter()
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self.dateFormatter.timeStyle = .short
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self.dateFormatter.dateStyle = .short
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super.init(coder: aDecoder)
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}
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}
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extension SaveStatesViewController
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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.isHidden = true
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self.backgroundView.autoresizingMask = [.flexibleWidth, .flexibleHeight]
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self.backgroundView.textLabel.text = NSLocalizedString("No Save States", comment: "")
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self.backgroundView.textLabel.textColor = UIColor.white
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self.backgroundView.detailTextLabel.textColor = UIColor.white
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self.view.insertSubview(self.backgroundView, at: 0)
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let collectionViewLayout = self.collectionViewLayout as! GridCollectionViewLayout
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let averageHorizontalInset = (collectionViewLayout.sectionInset.left + collectionViewLayout.sectionInset.right) / 2
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let portraitScreenWidth = UIScreen.main.coordinateSpace.convert(UIScreen.main.bounds, to: UIScreen.main.fixedCoordinateSpace).width
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// Use dimensions that allow two cells to fill the screen horizontally with padding in portrait mode
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// We'll keep the same size for landscape orientation, which will allow more to fit
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collectionViewLayout.itemWidth = (portraitScreenWidth - (averageHorizontalInset * 3)) / 2
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switch self.mode
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{
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case .saving:
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self.title = NSLocalizedString("Save State", comment: "")
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self.backgroundView.detailTextLabel.text = NSLocalizedString("You can create a new save state by pressing the + button in the top right.", comment: "")
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case .loading:
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self.title = NSLocalizedString("Load State", comment: "")
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self.backgroundView.detailTextLabel.text = NSLocalizedString("You can create a new save state by pressing the Save State option in the pause menu.", comment: "")
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self.navigationItem.rightBarButtonItem = nil
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}
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// Manually update prototype cell properties
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self.prototypeCellWidthConstraint = self.prototypeCell.contentView.widthAnchor.constraint(equalToConstant: collectionViewLayout.itemWidth)
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self.prototypeCellWidthConstraint.isActive = true
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let longPressGestureRecognizer = UILongPressGestureRecognizer(target: self, action: #selector(SaveStatesViewController.handleLongPressGesture(_:)))
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self.collectionView?.addGestureRecognizer(longPressGestureRecognizer)
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// Pre-initialize previewGameViewController with game and start/pause emulation to ensure previewingContext(_:viewControllerForLocation:) callback doesn't take too long + break 3D Touch animation
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self.preparePreviewGameViewController()
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self.previewInteraction = UIPreviewInteraction(view: self.collectionView!)
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self.previewInteraction.delegate = self
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self.registerForPreviewing(with: self, sourceView: self.collectionView!)
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self.updateBackgroundView()
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}
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override func viewWillAppear(_ animated: Bool)
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{
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self.fetchedResultsController.performFetchIfNeeded()
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self.updateBackgroundView()
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super.viewWillAppear(animated)
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}
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override func viewDidDisappear(_ animated: Bool)
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{
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super.viewDidDisappear(animated)
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self.resetEmulatorCoreIfNeeded()
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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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}
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}
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private extension SaveStatesViewController
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{
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//MARK: - Update -
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func updateFetchedResultsController()
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{
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let fetchRequest = SaveState.rst_fetchRequest()
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fetchRequest.returnsObjectsAsFaults = false
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fetchRequest.predicate = Predicate(format: "%K == %@", SaveState.Attributes.game.rawValue, self.game)
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fetchRequest.sortDescriptors = [SortDescriptor(key: SaveState.Attributes.type.rawValue, ascending: true), SortDescriptor(key: SaveState.Attributes.creationDate.rawValue, ascending: true)]
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self.fetchedResultsController = NSFetchedResultsController(fetchRequest: fetchRequest, managedObjectContext: DatabaseManager.sharedManager.managedObjectContext, sectionNameKeyPath: SaveState.Attributes.type.rawValue, cacheName: nil)
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self.fetchedResultsController.delegate = self
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}
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func updateBackgroundView()
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{
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if let fetchedObjects = self.fetchedResultsController.fetchedObjects, fetchedObjects.count > 0
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{
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self.backgroundView.isHidden = true
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}
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else
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{
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self.backgroundView.isHidden = false
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}
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}
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//MARK: - Configure Views -
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func configureCollectionViewCell(_ cell: GridCollectionViewCell, forIndexPath indexPath: IndexPath, ignoreExpensiveOperations ignoreOperations: Bool = false)
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{
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let saveState = self.fetchedResultsController.object(at: indexPath) as! SaveState
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cell.imageView.backgroundColor = UIColor.white
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cell.imageView.image = UIImage(named: "DeltaPlaceholder")
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if !ignoreOperations
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{
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let imageOperation = LoadImageOperation(URL: saveState.imageFileURL)
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imageOperation.imageCache = self.imageCache
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imageOperation.completionHandler = { image in
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if let image = image
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{
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cell.imageView.backgroundColor = nil
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cell.imageView.image = image
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}
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}
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// Ensure initially visible cells have loaded their image before they appear to prevent potential flickering from placeholder to thumbnail
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if self.isAppearing
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{
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imageOperation.isImmediate = true
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}
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self.imageOperationQueue.addOperation(imageOperation, forKey: indexPath)
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}
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let deltaCore = Delta.core(for: self.game.type)!
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let dimensions = deltaCore.emulatorConfiguration.videoBufferInfo.outputDimensions
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cell.maximumImageSize = CGSize(width: self.prototypeCellWidthConstraint.constant, height: (self.prototypeCellWidthConstraint.constant / dimensions.width) * dimensions.height)
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cell.textLabel.textColor = UIColor.white
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cell.textLabel.font = UIFont.preferredFont(forTextStyle: UIFontTextStyleSubheadline)
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let name = saveState.name ?? self.dateFormatter.string(from: saveState.modifiedDate)
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cell.textLabel.text = name
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}
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func configureCollectionViewHeaderView(_ headerView: SaveStatesCollectionHeaderView, forSection section: Int)
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{
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let section = self.correctedSectionForSectionIndex(section)
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let title: String
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switch section
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{
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case .auto: title = NSLocalizedString("Auto Save", comment: "")
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case .general: title = NSLocalizedString("General", comment: "")
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case .locked: title = NSLocalizedString("Locked", comment: "")
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}
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headerView.textLabel.text = title
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}
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//MARK: - Gestures -
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@objc func handleLongPressGesture(_ gestureRecognizer: UILongPressGestureRecognizer)
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{
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guard gestureRecognizer.state == .began else { return }
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guard let indexPath = self.collectionView?.indexPathForItem(at: gestureRecognizer.location(in: self.collectionView)) else { return }
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let saveState = self.fetchedResultsController.object(at: indexPath) as! SaveState
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let alertController = UIAlertController(title: nil, message: nil, preferredStyle: .actionSheet)
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let actions = self.actionsForSaveState(saveState).map { $0.alertAction }
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for action in actions
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{
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alertController.addAction(action)
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}
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self.present(alertController, animated: true, completion: nil)
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}
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//MARK: - Save States -
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@IBAction func addSaveState()
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{
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var saveState: SaveState!
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let backgroundContext = DatabaseManager.sharedManager.backgroundManagedObjectContext()
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backgroundContext.performAndWait {
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let game = backgroundContext.object(with: self.game.objectID) as! Game
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saveState = SaveState.insertIntoManagedObjectContext(backgroundContext)
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saveState.game = game
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}
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self.updateSaveState(saveState)
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}
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func updateSaveState(_ saveState: SaveState)
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{
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// Stop previewGameViewController.emulatorCore, and switch to self.emulatorCore
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self.prepareEmulatorCore()
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saveState.managedObjectContext?.performAndWait {
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self.delegate?.saveStatesViewController(self, updateSaveState: saveState)
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saveState.managedObjectContext?.saveWithErrorLogging()
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}
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DispatchQueue.main.async {
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// Only restart self.previewGameViewController.emulatorCore if we're not being dismissed
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if !self.isDisappearing
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{
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self.emulatorCore?.stop()
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self.previewGameViewController.emulatorCore?.start()
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self.previewGameViewController.emulatorCore?.pause()
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}
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}
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}
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func loadSaveState(_ saveState: SaveStateProtocol)
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{
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// Stop previewGameViewController.emulatorCore, and switch to self.emulatorCore
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self.prepareEmulatorCore()
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self.delegate?.saveStatesViewController(self, loadSaveState: saveState)
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// Implicit assumption that loadSaveState will always result in SaveStatesViewController being dismissed
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// Mostly because the method used in updateSaveState(_:) to detect this doesn't work for peek/pop, and too lazy to care rn
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}
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func deleteSaveState(_ saveState: SaveState)
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{
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let confirmationAlertController = UIAlertController(title: NSLocalizedString("Delete Save State?", comment: ""), message: NSLocalizedString("Are you sure you want to delete this save state? This cannot be undone.", comment: ""), preferredStyle: .alert)
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confirmationAlertController.addAction(UIAlertAction(title: NSLocalizedString("Delete", comment: ""), style: .default, handler: { action in
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let backgroundContext = DatabaseManager.sharedManager.backgroundManagedObjectContext()
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backgroundContext.perform {
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let temporarySaveState = backgroundContext.object(with: saveState.objectID)
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backgroundContext.delete(temporarySaveState)
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backgroundContext.saveWithErrorLogging()
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}
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}))
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confirmationAlertController.addAction(UIAlertAction(title: NSLocalizedString("Cancel", comment: ""), style: .cancel, handler: nil))
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self.present(confirmationAlertController, animated: true, completion: nil)
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}
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func renameSaveState(_ saveState: SaveState)
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{
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self.selectedSaveState = saveState
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let alertController = UIAlertController(title: NSLocalizedString("Rename Save State", comment: ""), message: nil, preferredStyle: .alert)
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alertController.addTextField { (textField) in
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textField.text = saveState.name
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textField.placeholder = NSLocalizedString("Name", comment: "")
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textField.autocapitalizationType = .words
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textField.returnKeyType = .done
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textField.addTarget(self, action: #selector(SaveStatesViewController.updateSaveStateName(_:)), for: .editingDidEnd)
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}
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alertController.addAction(UIAlertAction(title: NSLocalizedString("Cancel", comment: ""), style: .cancel, handler: { (action) in
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self.selectedSaveState = nil
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}))
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alertController.addAction(UIAlertAction(title: NSLocalizedString("Rename", comment: ""), style: .default, handler: { (action) in
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self.updateSaveStateName(alertController.textFields!.first!)
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}))
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self.present(alertController, animated: true, completion: nil)
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}
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@objc func updateSaveStateName(_ textField: UITextField)
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{
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guard let selectedSaveState = self.selectedSaveState else { return }
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var text = textField.text
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if text?.characters.count == 0
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{
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// When text is nil, we know to show the timestamp instead
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text = nil
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}
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let backgroundContext = DatabaseManager.sharedManager.backgroundManagedObjectContext()
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backgroundContext.perform {
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let saveState = backgroundContext.object(with: selectedSaveState.objectID) as! SaveState
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saveState.name = text
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backgroundContext.saveWithErrorLogging()
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}
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self.selectedSaveState = nil
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}
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func updatePreviewSaveState(_ saveState: SaveState?)
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{
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let alertController = UIAlertController(title: NSLocalizedString("Change Preview Save State?", comment: ""), message: NSLocalizedString("The Preview Save State is loaded whenever you preview this game from the Main Menu with 3D Touch. Are you sure you want to change it?", comment: ""), preferredStyle: .alert)
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alertController.addAction(UIAlertAction(title: NSLocalizedString("Cancel", comment: ""), style: .cancel, handler: nil))
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alertController.addAction(UIAlertAction(title: NSLocalizedString("Change", comment: ""), style: .default, handler: { (action) in
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let backgroundContext = DatabaseManager.sharedManager.backgroundManagedObjectContext()
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backgroundContext.perform {
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let game = backgroundContext.object(with: self.game.objectID) as! Game
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if let saveState = saveState
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{
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let previewSaveState = backgroundContext.object(with: saveState.objectID) as! SaveState
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game.previewSaveState = previewSaveState
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}
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else
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{
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game.previewSaveState = nil
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}
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backgroundContext.saveWithErrorLogging()
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}
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}))
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self.present(alertController, animated: true, completion: nil)
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}
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func lockSaveState(_ saveState: SaveState)
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{
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let backgroundContext = DatabaseManager.sharedManager.backgroundManagedObjectContext()
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backgroundContext.performAndWait() {
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let temporarySaveState = backgroundContext.object(with: saveState.objectID) as! SaveState
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temporarySaveState.type = .locked
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backgroundContext.saveWithErrorLogging()
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}
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}
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func unlockSaveState(_ saveState: SaveState)
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{
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let backgroundContext = DatabaseManager.sharedManager.backgroundManagedObjectContext()
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backgroundContext.performAndWait() {
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let temporarySaveState = backgroundContext.object(with: saveState.objectID) as! SaveState
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temporarySaveState.type = .general
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backgroundContext.saveWithErrorLogging()
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}
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}
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//MARK: - Convenience Methods -
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func correctedSectionForSectionIndex(_ section: Int) -> Section
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{
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let sectionInfo = self.fetchedResultsController.sections![section]
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let sectionIndex = Int(sectionInfo.name)!
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let section = Section(rawValue: sectionIndex)!
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return section
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}
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func actionsForSaveState(_ saveState: SaveState) -> [Action]
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{
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var actions = [Action]()
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if self.traitCollection.forceTouchCapability == .available
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{
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if saveState.game.previewSaveState != saveState
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{
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let previewAction = Action(title: NSLocalizedString("Set as Preview Save State", comment: ""), style: .default, action: { action in
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self.updatePreviewSaveState(saveState)
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})
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actions.append(previewAction)
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}
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else
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{
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let previewAction = Action(title: NSLocalizedString("Remove as Preview Save State", comment: ""), style: .default, action: { action in
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self.updatePreviewSaveState(nil)
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})
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actions.append(previewAction)
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}
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}
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let cancelAction = Action(title: NSLocalizedString("Cancel", comment: ""), style: .cancel, action: nil)
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actions.append(cancelAction)
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let renameAction = Action(title: NSLocalizedString("Rename", comment: ""), style: .default, action: { action in
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self.renameSaveState(saveState)
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})
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actions.append(renameAction)
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switch saveState.type
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{
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case .auto: break
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case .general:
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let lockAction = Action(title: NSLocalizedString("Lock", comment: ""), style: .default, action: { action in
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self.lockSaveState(saveState)
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})
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actions.append(lockAction)
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case .locked:
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let unlockAction = Action(title: NSLocalizedString("Unlock", comment: ""), style: .default, action: { action in
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self.unlockSaveState(saveState)
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})
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actions.append(unlockAction)
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}
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let deleteAction = Action(title: NSLocalizedString("Delete", comment: ""), style: .destructive, action: { action in
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self.deleteSaveState(saveState)
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})
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actions.append(deleteAction)
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return actions
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}
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//MARK: - Emulator -
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func resetEmulatorCoreIfNeeded()
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{
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guard let saveState = self.emulatorCoreSaveState else { return }
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defer
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{
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// Remove temporary save state file
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do
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{
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try FileManager.default.removeItem(at: saveState.fileURL)
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}
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catch let error as NSError
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{
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print(error)
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}
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}
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self.previewGameViewController.emulatorCore?.stop()
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// Kinda hacky, but isMovingFromParentViewController only returns yes when popping off navigation controller, and not being dismissed modally
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// Because of this, this is only run when the user returns to PauseMenuViewController, and not when they choose a save state to load
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guard self.isMovingFromParentViewController else { return }
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self.prepareEmulatorCore()
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}
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func prepareEmulatorCore()
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{
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self.previewGameViewController.emulatorCore?.stop()
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// We stopped emulation for 3D Touch, so now we must resume emulation and load the save state we made to make it seem like it was never stopped
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if let emulatorCore = self.emulatorCore
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{
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// Temporarily disable video rendering to prevent flickers
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emulatorCore.videoManager.enabled = false
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// Load the save state we stored a reference to
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emulatorCore.start()
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emulatorCore.pause()
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if let saveState = self.emulatorCoreSaveState
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{
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do
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{
|
|
try emulatorCore.load(saveState)
|
|
}
|
|
catch EmulatorCore.SaveStateError.doesNotExist
|
|
{
|
|
print("Save State does not exist.")
|
|
}
|
|
catch let error as NSError
|
|
{
|
|
print(error)
|
|
}
|
|
}
|
|
|
|
// Re-enable video rendering
|
|
emulatorCore.videoManager.enabled = true
|
|
}
|
|
}
|
|
}
|
|
|
|
//MARK: - 3D Touch -
|
|
extension SaveStatesViewController: UIViewControllerPreviewingDelegate, UIPreviewInteractionDelegate
|
|
{
|
|
private func preparePreviewGameViewController()
|
|
{
|
|
if let emulatorCore = self.emulatorCore
|
|
{
|
|
// Store reference to current game state before we stop emulation so we can resume it if user decides to not load a save state
|
|
emulatorCore.save() { saveState in
|
|
|
|
let fileURL = FileManager.uniqueTemporaryURL()
|
|
|
|
do
|
|
{
|
|
try FileManager.default.moveItem(at: saveState.fileURL, to: fileURL)
|
|
self.emulatorCoreSaveState = DeltaCore.SaveState(fileURL: fileURL, gameType: emulatorCore.game.type)
|
|
}
|
|
catch let error as NSError
|
|
{
|
|
print(error)
|
|
}
|
|
}
|
|
|
|
guard self.emulatorCoreSaveState != nil else { return }
|
|
|
|
emulatorCore.stop()
|
|
}
|
|
|
|
self.previewGameViewController.game = self.game
|
|
self.previewGameViewController.emulatorCore?.start()
|
|
self.previewGameViewController.emulatorCore?.pause()
|
|
}
|
|
|
|
func previewingContext(_ previewingContext: UIViewControllerPreviewing, viewControllerForLocation location: CGPoint) -> UIViewController?
|
|
{
|
|
guard
|
|
let indexPath = self.collectionView?.indexPathForItem(at: location),
|
|
let layoutAttributes = self.collectionViewLayout.layoutAttributesForItem(at: indexPath),
|
|
self.emulatorCoreSaveState != nil
|
|
else { return nil }
|
|
|
|
previewingContext.sourceRect = layoutAttributes.frame
|
|
|
|
let saveState = self.fetchedResultsController.object(at: indexPath) as! SaveState
|
|
|
|
do
|
|
{
|
|
try self.previewGameViewController.emulatorCore?.load(saveState)
|
|
|
|
let actions = self.actionsForSaveState(saveState).lazy.filter{ $0.style != .cancel }.map{ $0.previewAction }
|
|
self.previewGameViewController.overridePreviewActionItems = Array(actions)
|
|
|
|
return self.previewGameViewController
|
|
}
|
|
catch EmulatorCore.SaveStateError.doesNotExist
|
|
{
|
|
print("Save State \(saveState.name) does not exist.")
|
|
}
|
|
catch let error as NSError
|
|
{
|
|
print(error)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func previewingContext(_ previewingContext: UIViewControllerPreviewing, commit viewControllerToCommit: UIViewController)
|
|
{
|
|
let gameViewController = viewControllerToCommit as! GameViewController
|
|
|
|
gameViewController.emulatorCore?.pause()
|
|
gameViewController.emulatorCore?.save() { saveState in
|
|
self.loadSaveState(saveState)
|
|
}
|
|
}
|
|
|
|
func previewInteraction(_ previewInteraction: UIPreviewInteraction, didUpdatePreviewTransition transitionProgress: CGFloat, ended: Bool)
|
|
{
|
|
}
|
|
|
|
func previewInteractionDidCancel(_ previewInteraction: UIPreviewInteraction)
|
|
{
|
|
self.previewGameViewController.emulatorCore?.pause()
|
|
}
|
|
}
|
|
|
|
//MARK: - <UICollectionViewDataSource> -
|
|
extension SaveStatesViewController
|
|
{
|
|
override func numberOfSections(in collectionView: UICollectionView) -> Int
|
|
{
|
|
let numberOfSections = self.fetchedResultsController.sections!.count
|
|
return numberOfSections
|
|
}
|
|
|
|
override func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int
|
|
{
|
|
let section = self.fetchedResultsController.sections![section]
|
|
return section.numberOfObjects
|
|
}
|
|
|
|
override func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell
|
|
{
|
|
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: RSTGenericCellIdentifier, for: indexPath) as! GridCollectionViewCell
|
|
self.configureCollectionViewCell(cell, forIndexPath: indexPath)
|
|
return cell
|
|
}
|
|
|
|
override func collectionView(_ collectionView: UICollectionView, viewForSupplementaryElementOfKind kind: String, at indexPath: IndexPath) -> UICollectionReusableView
|
|
{
|
|
let headerView = collectionView.dequeueReusableSupplementaryView(ofKind: kind, withReuseIdentifier: "Header", for: indexPath) as! SaveStatesCollectionHeaderView
|
|
self.configureCollectionViewHeaderView(headerView, forSection: (indexPath as NSIndexPath).section)
|
|
return headerView
|
|
}
|
|
}
|
|
|
|
//MARK: - <UICollectionViewDelegate> -
|
|
extension SaveStatesViewController
|
|
{
|
|
override func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath)
|
|
{
|
|
let saveState = self.fetchedResultsController.object(at: indexPath) as! SaveState
|
|
|
|
switch self.mode
|
|
{
|
|
case .saving:
|
|
|
|
let section = self.correctedSectionForSectionIndex((indexPath as NSIndexPath).section)
|
|
switch section
|
|
{
|
|
case .auto: break
|
|
case .general:
|
|
let backgroundContext = DatabaseManager.sharedManager.backgroundManagedObjectContext()
|
|
backgroundContext.performAndWait() {
|
|
let temporarySaveState = backgroundContext.object(with: saveState.objectID) as! SaveState
|
|
self.updateSaveState(temporarySaveState)
|
|
}
|
|
|
|
case .locked:
|
|
let alertController = UIAlertController(title: NSLocalizedString("Cannot Modify Locked Save State", comment: ""), message: NSLocalizedString("This save state must first be unlocked before it can be modified.", comment: ""), preferredStyle: .alert)
|
|
alertController.addAction(UIAlertAction(title: NSLocalizedString("OK", comment: ""), style: .cancel, handler: nil))
|
|
self.present(alertController, animated: true, completion: nil)
|
|
|
|
}
|
|
|
|
case .loading: self.loadSaveState(saveState)
|
|
}
|
|
}
|
|
|
|
override func collectionView(_ collectionView: UICollectionView, didEndDisplaying cell: UICollectionViewCell, forItemAt indexPath: IndexPath)
|
|
{
|
|
let operation = self.imageOperationQueue[indexPath]
|
|
operation?.cancel()
|
|
}
|
|
}
|
|
|
|
//MARK: - <UICollectionViewDelegateFlowLayout> -
|
|
extension SaveStatesViewController: UICollectionViewDelegateFlowLayout
|
|
{
|
|
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize
|
|
{
|
|
// No need to load images from disk just to determine size, so we pass true for ignoreExpensiveOperations
|
|
self.configureCollectionViewCell(self.prototypeCell, forIndexPath: indexPath, ignoreExpensiveOperations: true)
|
|
|
|
let size = self.prototypeCell.contentView.systemLayoutSizeFitting(UILayoutFittingCompressedSize)
|
|
return size
|
|
}
|
|
|
|
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, referenceSizeForHeaderInSection section: Int) -> CGSize
|
|
{
|
|
self.configureCollectionViewHeaderView(self.prototypeHeader, forSection: section)
|
|
|
|
let size = self.prototypeHeader.systemLayoutSizeFitting(UILayoutFittingCompressedSize)
|
|
return size
|
|
}
|
|
}
|
|
|
|
//MARK: - <NSFetchedResultsControllerDelegate> -
|
|
extension SaveStatesViewController: NSFetchedResultsControllerDelegate
|
|
{
|
|
func controllerDidChangeContent(_ controller: NSFetchedResultsController<NSFetchRequestResult>)
|
|
{
|
|
self.collectionView?.reloadData()
|
|
self.updateBackgroundView()
|
|
}
|
|
}
|