142 lines
4.8 KiB
Swift
142 lines
4.8 KiB
Swift
//
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// ControllerSkinsViewController.swift
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// Delta
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//
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// Created by Riley Testut on 10/19/16.
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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 DeltaCore
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import Roxas
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class ControllerSkinsViewController: UITableViewController
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{
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var system: System! {
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didSet {
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self.updateDataSource()
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}
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}
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var traits: DeltaCore.ControllerSkin.Traits! {
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didSet {
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self.updateDataSource()
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}
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}
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fileprivate let dataSource: RSTFetchedResultsTableViewPrefetchingDataSource<ControllerSkin, UIImage>
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required init?(coder aDecoder: NSCoder)
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{
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self.dataSource = RSTFetchedResultsTableViewPrefetchingDataSource<ControllerSkin, UIImage>(fetchedResultsController: NSFetchedResultsController())
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super.init(coder: aDecoder)
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self.prepareDataSource()
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}
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}
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extension ControllerSkinsViewController
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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.tableView.dataSource = self.dataSource
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self.tableView.prefetchDataSource = self.dataSource
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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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private extension ControllerSkinsViewController
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{
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//MARK: - Update
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func prepareDataSource()
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{
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self.dataSource.proxy = self
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self.dataSource.cellConfigurationHandler = { (cell, item, indexPath) in
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let cell = cell as! ControllerSkinTableViewCell
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cell.controllerSkinImageView.image = nil
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cell.activityIndicatorView.startAnimating()
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}
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self.dataSource.prefetchHandler = { [unowned self] (controllerSkin, indexPath, completionHandler) in
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let imageOperation = LoadControllerSkinImageOperation(controllerSkin: controllerSkin, traits: self.traits, size: UIScreen.main.defaultControllerSkinSize)
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imageOperation.resultHandler = { (image, error) in
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completionHandler(image, error)
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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.start()
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imageOperation.waitUntilFinished()
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return nil
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}
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return imageOperation
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}
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self.dataSource.prefetchCompletionHandler = { (cell, image, indexPath, error) in
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guard let image = image, let cell = cell as? ControllerSkinTableViewCell else { return }
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cell.controllerSkinImageView.image = image
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cell.activityIndicatorView.stopAnimating()
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}
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}
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func updateDataSource()
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{
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guard let system = self.system, let traits = self.traits else { return }
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let configuration = ControllerSkinConfigurations(traits: traits)
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let fetchRequest: NSFetchRequest<ControllerSkin> = ControllerSkin.fetchRequest()
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fetchRequest.predicate = NSPredicate(format: "%K == %@ AND (%K & %d) == %d", #keyPath(ControllerSkin.gameType), system.gameType.rawValue, #keyPath(ControllerSkin.supportedConfigurations), configuration.rawValue, configuration.rawValue)
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fetchRequest.sortDescriptors = [NSSortDescriptor(key: #keyPath(ControllerSkin.isStandard), ascending: false), NSSortDescriptor(key: #keyPath(ControllerSkin.name), ascending: true)]
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self.dataSource.fetchedResultsController = NSFetchedResultsController(fetchRequest: fetchRequest, managedObjectContext: DatabaseManager.shared.viewContext, sectionNameKeyPath: #keyPath(ControllerSkin.name), cacheName: nil)
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}
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}
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extension ControllerSkinsViewController
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{
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override func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String?
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{
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let controllerSkin = self.dataSource.item(at: IndexPath(row: 0, section: section))
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return controllerSkin.name
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}
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}
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extension ControllerSkinsViewController
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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 controllerSkin = self.dataSource.item(at: indexPath)
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Settings.setPreferredControllerSkin(controllerSkin, for: self.system, traits: self.traits)
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_ = self.navigationController?.popViewController(animated: true)
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}
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override func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat
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{
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let controllerSkin = self.dataSource.item(at: indexPath)
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guard let size = controllerSkin.aspectRatio(for: self.traits) else { return 150 }
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let scale = (self.view.bounds.width / size.width)
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let height = size.height * scale
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return height
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}
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}
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