672 lines
28 KiB
Swift
672 lines
28 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 saveStatesViewControllerActiveEmulatorCore(saveStatesViewController: SaveStatesViewController) -> EmulatorCore
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func saveStatesViewController(saveStatesViewController: SaveStatesViewController, updateSaveState saveState: SaveState)
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func saveStatesViewController(saveStatesViewController: SaveStatesViewController, loadSaveState saveState: SaveStateType)
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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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weak var delegate: SaveStatesViewControllerDelegate! {
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didSet {
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self.updateFetchedResultsController()
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}
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}
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var mode = Mode.Saving
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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!
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private let imageOperationQueue = RSTOperationQueue()
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private let imageCache = NSCache()
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private var currentGameState: SaveStateType?
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private var selectedSaveState: SaveState?
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private let dateFormatter: NSDateFormatter
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required init?(coder aDecoder: NSCoder)
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{
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self.dateFormatter = NSDateFormatter()
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self.dateFormatter.timeStyle = .ShortStyle
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self.dateFormatter.dateStyle = .ShortStyle
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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.hidden = 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.whiteColor()
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self.backgroundView.detailTextLabel.textColor = UIColor.whiteColor()
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self.view.insertSubview(self.backgroundView, atIndex: 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.mainScreen().coordinateSpace.convertRect(UIScreen.mainScreen().bounds, toCoordinateSpace: UIScreen.mainScreen().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.constraintEqualToConstant(collectionViewLayout.itemWidth)
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self.prototypeCellWidthConstraint.active = 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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self.registerForPreviewingWithDelegate(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 game = self.delegate.saveStatesViewControllerActiveEmulatorCore(self).game as! Game
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let fetchRequest = SaveState.fetchRequest()
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fetchRequest.returnsObjectsAsFaults = false
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fetchRequest.predicate = NSPredicate(format: "%K == %@", SaveState.Attributes.game.rawValue, game)
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fetchRequest.sortDescriptors = [NSSortDescriptor(key: SaveState.Attributes.type.rawValue, ascending: true), NSSortDescriptor(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 where fetchedObjects.count > 0
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{
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self.backgroundView.hidden = true
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}
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else
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{
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self.backgroundView.hidden = 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: NSIndexPath, ignoreExpensiveOperations ignoreOperations: Bool = false)
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{
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let saveState = self.fetchedResultsController.objectAtIndexPath(indexPath) as! SaveState
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cell.imageView.backgroundColor = UIColor.whiteColor()
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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.appearing
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{
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imageOperation.immediate = true
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}
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self.imageOperationQueue.addOperation(imageOperation, forKey: indexPath)
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}
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cell.maximumImageSize = CGSizeMake(self.prototypeCellWidthConstraint.constant, (self.prototypeCellWidthConstraint.constant / 8.0) * 7.0)
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cell.textLabel.textColor = UIColor.whiteColor()
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cell.textLabel.font = UIFont.preferredFontForTextStyle(UIFontTextStyleSubheadline)
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let name = saveState.name ?? self.dateFormatter.stringFromDate(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?.indexPathForItemAtPoint(gestureRecognizer.locationInView(self.collectionView)) else { return }
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let saveState = self.fetchedResultsController.objectAtIndexPath(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.presentViewController(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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let backgroundContext = DatabaseManager.sharedManager.backgroundManagedObjectContext()
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backgroundContext.performBlock {
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var game = self.delegate.saveStatesViewControllerActiveEmulatorCore(self).game as! Game
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game = backgroundContext.objectWithID(game.objectID) as! Game
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let saveState = SaveState.insertIntoManagedObjectContext(backgroundContext)
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saveState.game = game
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self.updateSaveState(saveState)
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}
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}
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func updateSaveState(saveState: SaveState)
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{
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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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func loadSaveState(saveState: SaveState)
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{
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let emulatorCore = self.delegate.saveStatesViewControllerActiveEmulatorCore(self)
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if emulatorCore.state == .Stopped
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{
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emulatorCore.startEmulation()
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emulatorCore.pauseEmulation()
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}
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self.delegate?.saveStatesViewController(self, loadSaveState: saveState)
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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.performBlock {
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let temporarySaveState = backgroundContext.objectWithID(saveState.objectID)
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backgroundContext.deleteObject(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.presentViewController(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.addTextFieldWithConfigurationHandler { (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(_:)), forControlEvents: .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.presentViewController(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.performBlock {
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let saveState = backgroundContext.objectWithID(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.performBlock {
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var game = self.delegate.saveStatesViewControllerActiveEmulatorCore(self).game as! Game
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game = backgroundContext.objectWithID(game.objectID) as! Game
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if let saveState = saveState
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{
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let previewSaveState = backgroundContext.objectWithID(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.presentViewController(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.performBlockAndWait() {
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let temporarySaveState = backgroundContext.objectWithID(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.performBlockAndWait() {
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let temporarySaveState = backgroundContext.objectWithID(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: - Emulator -
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func resetEmulatorCoreIfNeeded()
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{
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guard let saveState = self.currentGameState 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 NSFileManager.defaultManager().removeItemAtURL(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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// 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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// 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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let emulatorCore = self.delegate.saveStatesViewControllerActiveEmulatorCore(self)
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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.startEmulation()
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emulatorCore.pauseEmulation()
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emulatorCore.loadSaveState(saveState)
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// Re-enable video rendering
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emulatorCore.videoManager.enabled = true
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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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let cancelAction = Action(title: NSLocalizedString("Cancel", comment: ""), style: .Cancel, action: nil)
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actions.append(cancelAction)
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let deleteAction = Action(title: NSLocalizedString("Delete Save State", 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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let renameAction = Action(title: NSLocalizedString("Rename Save State", 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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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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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 Save State", 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 Save State", 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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return actions
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}
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}
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//MARK: - <UIViewControllerPreviewingDelegate> -
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extension SaveStatesViewController: UIViewControllerPreviewingDelegate
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{
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func previewingContext(previewingContext: UIViewControllerPreviewing, viewControllerForLocation location: CGPoint) -> UIViewController?
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{
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guard let indexPath = self.collectionView?.indexPathForItemAtPoint(location), layoutAttributes = self.collectionViewLayout.layoutAttributesForItemAtIndexPath(indexPath) else { return nil }
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previewingContext.sourceRect = layoutAttributes.frame
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let emulatorCore = self.delegate.saveStatesViewControllerActiveEmulatorCore(self)
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let storyboard = UIStoryboard(name: "Main", bundle: nil)
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let saveState = self.fetchedResultsController.objectAtIndexPath(indexPath) as! SaveState
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let emulationViewController = storyboard.instantiateViewControllerWithIdentifier("emulationViewController") as! EmulationViewController
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emulationViewController.game = emulatorCore.game as! Game
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emulationViewController.overridePreviewActionItems = self.actionsForSaveState(saveState).filter{ $0.style != .Cancel }.map{ $0.previewAction }
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emulationViewController.deferredPreparationHandler = { [unowned emulationViewController] in
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// Store reference to current game state before we stop emulation so we can resume it if user decides to not load a save state
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if self.currentGameState == nil
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{
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emulatorCore.saveSaveState() { saveState in
|
|
|
|
let fileURL = NSFileManager.uniqueTemporaryURL()
|
|
|
|
do
|
|
{
|
|
try NSFileManager.defaultManager().moveItemAtURL(saveState.fileURL, toURL: fileURL)
|
|
}
|
|
catch let error as NSError
|
|
{
|
|
print(error)
|
|
}
|
|
|
|
self.currentGameState = DeltaCore.SaveState(name: nil, fileURL: fileURL)
|
|
}
|
|
}
|
|
|
|
emulatorCore.stopEmulation()
|
|
|
|
emulationViewController.emulatorCore.startEmulation()
|
|
emulationViewController.emulatorCore.pauseEmulation()
|
|
emulationViewController.emulatorCore.loadSaveState(saveState)
|
|
}
|
|
|
|
return emulationViewController
|
|
}
|
|
|
|
func previewingContext(previewingContext: UIViewControllerPreviewing, commitViewController viewControllerToCommit: UIViewController)
|
|
{
|
|
let emulationViewController = viewControllerToCommit as! EmulationViewController
|
|
|
|
emulationViewController.emulatorCore.pauseEmulation()
|
|
emulationViewController.emulatorCore.saveSaveState() { saveState in
|
|
|
|
emulationViewController.emulatorCore.stopEmulation()
|
|
|
|
let emulatorCore = self.delegate.saveStatesViewControllerActiveEmulatorCore(self)
|
|
|
|
emulatorCore.audioManager.stop()
|
|
|
|
emulatorCore.startEmulation()
|
|
emulatorCore.pauseEmulation()
|
|
|
|
self.delegate.saveStatesViewController(self, loadSaveState: saveState)
|
|
|
|
emulatorCore.videoManager.enabled = true
|
|
}
|
|
}
|
|
}
|
|
|
|
//MARK: - <UICollectionViewDataSource> -
|
|
extension SaveStatesViewController
|
|
{
|
|
override func numberOfSectionsInCollectionView(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, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell
|
|
{
|
|
let cell = collectionView.dequeueReusableCellWithReuseIdentifier(RSTGenericCellIdentifier, forIndexPath: indexPath) as! GridCollectionViewCell
|
|
self.configureCollectionViewCell(cell, forIndexPath: indexPath)
|
|
return cell
|
|
}
|
|
|
|
override func collectionView(collectionView: UICollectionView, viewForSupplementaryElementOfKind kind: String, atIndexPath indexPath: NSIndexPath) -> UICollectionReusableView
|
|
{
|
|
let headerView = collectionView.dequeueReusableSupplementaryViewOfKind(kind, withReuseIdentifier: "Header", forIndexPath: indexPath) as! SaveStatesCollectionHeaderView
|
|
self.configureCollectionViewHeaderView(headerView, forSection: indexPath.section)
|
|
return headerView
|
|
}
|
|
}
|
|
|
|
//MARK: - <UICollectionViewDelegate> -
|
|
extension SaveStatesViewController
|
|
{
|
|
override func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath)
|
|
{
|
|
let saveState = self.fetchedResultsController.objectAtIndexPath(indexPath) as! SaveState
|
|
|
|
switch self.mode
|
|
{
|
|
case .Saving:
|
|
|
|
let section = self.correctedSectionForSectionIndex(indexPath.section)
|
|
switch section
|
|
{
|
|
case .Auto: break
|
|
case .General:
|
|
let backgroundContext = DatabaseManager.sharedManager.backgroundManagedObjectContext()
|
|
backgroundContext.performBlockAndWait() {
|
|
let temporarySaveState = backgroundContext.objectWithID(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.presentViewController(alertController, animated: true, completion: nil)
|
|
|
|
}
|
|
|
|
case .Loading: self.loadSaveState(saveState)
|
|
}
|
|
}
|
|
|
|
override func collectionView(collectionView: UICollectionView, didEndDisplayingCell cell: UICollectionViewCell, forItemAtIndexPath indexPath: NSIndexPath)
|
|
{
|
|
let operation = self.imageOperationQueue.operationForKey(indexPath)
|
|
operation?.cancel()
|
|
}
|
|
}
|
|
|
|
//MARK: - <UICollectionViewDelegateFlowLayout> -
|
|
extension SaveStatesViewController: UICollectionViewDelegateFlowLayout
|
|
{
|
|
func collectionView(collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAtIndexPath indexPath: NSIndexPath) -> 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.systemLayoutSizeFittingSize(UILayoutFittingCompressedSize)
|
|
return size
|
|
}
|
|
|
|
func collectionView(collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, referenceSizeForHeaderInSection section: Int) -> CGSize
|
|
{
|
|
self.configureCollectionViewHeaderView(self.prototypeHeader, forSection: section)
|
|
|
|
let size = self.prototypeHeader.systemLayoutSizeFittingSize(UILayoutFittingCompressedSize)
|
|
return size
|
|
}
|
|
}
|
|
|
|
//MARK: - <NSFetchedResultsControllerDelegate> -
|
|
extension SaveStatesViewController: NSFetchedResultsControllerDelegate
|
|
{
|
|
func controllerDidChangeContent(controller: NSFetchedResultsController)
|
|
{
|
|
self.collectionView?.reloadData()
|
|
self.updateBackgroundView()
|
|
}
|
|
} |