301 lines
11 KiB
Swift
301 lines
11 KiB
Swift
//
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// CheatsViewController.swift
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// Delta
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//
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// Created by Riley Testut on 5/20/16.
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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 CheatsViewControllerDelegate: class
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{
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func cheatsViewControllerActiveEmulatorCore(_ saveStatesViewController: CheatsViewController) -> EmulatorCore
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func cheatsViewController(_ cheatsViewController: CheatsViewController, didActivateCheat cheat: Cheat) throws
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func cheatsViewController(_ cheatsViewController: CheatsViewController, didDeactivateCheat cheat: Cheat)
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}
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class CheatsViewController: UITableViewController
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{
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weak var delegate: CheatsViewControllerDelegate! {
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didSet {
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self.updateFetchedResultsController()
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}
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}
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private var backgroundView: RSTBackgroundView!
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private var fetchedResultsController: NSFetchedResultsController<NSFetchRequestResult>!
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}
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extension CheatsViewController
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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.title = NSLocalizedString("Cheats", comment: "")
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self.backgroundView = RSTBackgroundView(frame: self.view.bounds)
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self.backgroundView.isHidden = false
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self.backgroundView.autoresizingMask = [.flexibleWidth, .flexibleHeight]
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self.backgroundView.textLabel.text = NSLocalizedString("No Cheats", comment: "")
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self.backgroundView.textLabel.textColor = UIColor.white()
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self.backgroundView.detailTextLabel.text = NSLocalizedString("You can add a new cheat by pressing the + button in the top right.", comment: "")
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self.backgroundView.detailTextLabel.textColor = UIColor.white()
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self.tableView.backgroundView = self.backgroundView
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self.registerForPreviewing(with: self, sourceView: self.tableView)
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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 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: - Navigation -
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private extension CheatsViewController
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{
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@IBAction func unwindFromEditCheatViewController(_ segue: UIStoryboardSegue)
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{
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}
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}
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//MARK: - Update -
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private extension CheatsViewController
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{
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func updateFetchedResultsController()
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{
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let game = self.delegate.cheatsViewControllerActiveEmulatorCore(self).game as! Game
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let fetchRequest = Cheat.fetchRequest()
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fetchRequest.returnsObjectsAsFaults = false
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fetchRequest.predicate = Predicate(format: "%K == %@", Cheat.Attributes.game.rawValue, game)
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fetchRequest.sortDescriptors = [SortDescriptor(key: Cheat.Attributes.name.rawValue, ascending: true)]
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self.fetchedResultsController = NSFetchedResultsController(fetchRequest: fetchRequest, managedObjectContext: DatabaseManager.sharedManager.managedObjectContext, sectionNameKeyPath: nil, 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.tableView.separatorStyle = .singleLine
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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.tableView.separatorStyle = .none
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self.backgroundView.isHidden = false
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}
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}
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}
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//MARK: - Managing Cheats -
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/// Managing Cheats
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private extension CheatsViewController
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{
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@IBAction func addCheat()
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{
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let editCheatViewController = self.makeEditCheatViewController(cheat: nil)
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editCheatViewController.presentWithPresentingViewController(self)
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}
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func deleteCheat(_ cheat: Cheat)
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{
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self.delegate.cheatsViewController(self, didDeactivateCheat: cheat)
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let backgroundContext = DatabaseManager.sharedManager.backgroundManagedObjectContext()
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backgroundContext.perform {
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let temporaryCheat = backgroundContext.object(with: cheat.objectID)
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backgroundContext.delete(temporaryCheat)
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backgroundContext.saveWithErrorLogging()
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}
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}
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}
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//MARK: - Convenience -
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/// Convenience
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private extension CheatsViewController
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{
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func configure(cell: UITableViewCell, forIndexPath indexPath: IndexPath)
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{
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let cheat = self.fetchedResultsController.object(at: indexPath) as! Cheat
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cell.textLabel?.text = cheat.name
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cell.textLabel?.font = UIFont.boldSystemFont(ofSize: cell.textLabel!.font.pointSize)
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cell.accessoryType = cheat.enabled ? .checkmark : .none
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}
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func makeEditCheatViewController(cheat: Cheat?) -> EditCheatViewController
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{
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let editCheatViewController = self.storyboard!.instantiateViewController(withIdentifier: "editCheatViewController") as! EditCheatViewController
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editCheatViewController.delegate = self
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editCheatViewController.supportedCheatFormats = self.delegate.cheatsViewControllerActiveEmulatorCore(self).configuration.supportedCheatFormats
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editCheatViewController.cheat = cheat
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editCheatViewController.game = self.delegate.cheatsViewControllerActiveEmulatorCore(self).game as! Game
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return editCheatViewController
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}
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}
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extension CheatsViewController
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{
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// MARK: - Table view data source
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override func numberOfSections(in tableView: UITableView) -> Int
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{
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let numberOfSections = self.fetchedResultsController.sections!.count
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return numberOfSections
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}
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override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int
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{
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let section = self.fetchedResultsController.sections![section]
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return section.numberOfObjects
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}
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override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell
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{
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let cell = tableView.dequeueReusableCell(withIdentifier: RSTGenericCellIdentifier, for: indexPath)
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self.configure(cell: cell, forIndexPath: indexPath)
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return cell
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}
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}
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extension CheatsViewController
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{
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override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath)
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{
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let cheat = self.fetchedResultsController.object(at: indexPath) as! Cheat
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let backgroundContext = DatabaseManager.sharedManager.backgroundManagedObjectContext()
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backgroundContext.performAndWait {
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let temporaryCheat = backgroundContext.object(with: cheat.objectID) as! Cheat
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temporaryCheat.enabled = !temporaryCheat.enabled
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if temporaryCheat.enabled
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{
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do
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{
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try self.delegate.cheatsViewController(self, didActivateCheat: temporaryCheat)
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}
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catch EmulatorCore.CheatError.invalid
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{
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print("Invalid cheat:", cheat.name, cheat.code)
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}
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catch let error as NSError
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{
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print("Unknown Cheat Error:", error, cheat.name, cheat.code)
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}
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}
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else
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{
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self.delegate.cheatsViewController(self, didDeactivateCheat: temporaryCheat)
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}
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backgroundContext.saveWithErrorLogging()
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}
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self.tableView.reloadRows(at: [indexPath], with: .none)
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}
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override func tableView(_ tableView: UITableView, editActionsForRowAt indexPath: IndexPath) -> [UITableViewRowAction]?
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{
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let cheat = self.fetchedResultsController.object(at: indexPath) as! Cheat
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let deleteAction = UITableViewRowAction(style: .destructive, title: NSLocalizedString("Delete", comment: "")) { (action, indexPath) in
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self.deleteCheat(cheat)
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}
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let editAction = UITableViewRowAction(style: .normal, title: NSLocalizedString("Edit", comment: "")) { (action, indexPath) in
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let editCheatViewController = self.makeEditCheatViewController(cheat: cheat)
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editCheatViewController.presentWithPresentingViewController(self)
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}
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return [deleteAction, editAction]
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}
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override func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath)
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{
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// This method intentionally left blank because someone decided it was a Good Idea™ to require this method be implemented to use UITableViewRowActions
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}
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}
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//MARK: - <UIViewControllerPreviewingDelegate> -
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extension CheatsViewController: 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.tableView.indexPathForRow(at: location) else { return nil }
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let frame = self.tableView.rectForRow(at: indexPath)
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previewingContext.sourceRect = frame
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let cheat = self.fetchedResultsController.object(at: indexPath) as! Cheat
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let editCheatViewController = self.makeEditCheatViewController(cheat: cheat)
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return editCheatViewController
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}
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func previewingContext(_ previewingContext: UIViewControllerPreviewing, commit viewControllerToCommit: UIViewController)
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{
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let editCheatViewController = viewControllerToCommit as! EditCheatViewController
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editCheatViewController.presentWithPresentingViewController(self)
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}
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}
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//MARK: - <EditCheatViewControllerDelegate> -
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extension CheatsViewController: EditCheatViewControllerDelegate
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{
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func editCheatViewController(_ editCheatViewController: EditCheatViewController, activateCheat cheat: Cheat, previousCheat: Cheat?) throws
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{
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try self.delegate.cheatsViewController(self, didActivateCheat: cheat)
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if let previousCheat = previousCheat
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{
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let code = cheat.code
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previousCheat.managedObjectContext?.performAndWait({
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guard previousCheat.code != code else { return }
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self.delegate.cheatsViewController(self, didDeactivateCheat: previousCheat)
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})
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}
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}
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func editCheatViewController(_ editCheatViewController: EditCheatViewController, deactivateCheat cheat: Cheat)
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{
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self.delegate.cheatsViewController(self, didDeactivateCheat: cheat)
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}
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}
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//MARK: - <NSFetchedResultsControllerDelegate> -
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extension CheatsViewController: NSFetchedResultsControllerDelegate
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{
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func controllerDidChangeContent(_ controller: NSFetchedResultsController<NSFetchRequestResult>)
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{
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self.tableView.reloadData()
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self.updateBackgroundView()
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}
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}
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