/***************************************************************************** * MediaViewController.swift * VLC for iOS ***************************************************************************** * Copyright (c) 2018 VideoLAN. All rights reserved. * $Id$ * * Authors: Carola Nitz * Mike JS. Choi * * Refer to the COPYING file of the official project for license. *****************************************************************************/ import Foundation @objc public protocol VLCMediaViewControllerDelegate: class { func mediaViewControllerDidSelectMediaObject(_ mediaViewController: VLCMediaViewController, mediaObject: NSManagedObject) func mediaViewControllerDidSelectSort(_ mediaViewController: VLCMediaViewController) } public class VLCMediaViewController: UICollectionViewController, UISearchResultsUpdating, UISearchControllerDelegate, IndicatorInfoProvider { private var services: Services private var mediaDataSourceAndDelegate: MediaDataSourceAndDelegate? private var searchController: UISearchController? private let searchDataSource = VLCLibrarySearchDisplayDataSource() private var mediaType: VLCMediaType private var rendererButton: UIButton public weak var delegate: VLCMediaViewControllerDelegate? @available(iOS 11.0, *) lazy var dragAndDropManager: VLCDragAndDropManager = { let dragAndDropManager = VLCDragAndDropManager(type: mediaType) dragAndDropManager.delegate = services.mediaDataSource return dragAndDropManager }() lazy var emptyView: VLCEmptyLibraryView = { let name = String(describing: VLCEmptyLibraryView.self) let nib = Bundle.main.loadNibNamed(name, owner: self, options: nil) guard let emptyView = nib?.first as? VLCEmptyLibraryView else { fatalError("Can't find nib for \(name)") } return emptyView }() @available(*, unavailable) init() { fatalError() } init(services: Services, type: VLCMediaType) { self.services = services mediaType = type rendererButton = services.rendererDiscovererManager.setupRendererButton() super.init(collectionViewLayout: UICollectionViewFlowLayout()) NotificationCenter.default.addObserver(self, selector: #selector(themeDidChange), name: .VLCThemeDidChangeNotification, object: nil) if mediaType.category == .video { NotificationCenter.default.addObserver(self, selector: #selector(reloadData), name: .VLCAllVideosDidChangeNotification, object: nil) } else { NotificationCenter.default.addObserver(self, selector: #selector(reloadData), name: .VLCTracksDidChangeNotification, object: nil) } } public override var preferredStatusBarStyle: UIStatusBarStyle { return PresentationTheme.current.colors.statusBarStyle } @objc func reloadData() { collectionView?.reloadData() updateUIForContent() } @available(*, unavailable) required public init?(coder aDecoder: NSCoder) { fatalError("init(coder: ) has not been implemented") } public override func viewDidLoad() { super.viewDidLoad() setupCollectionView() setupSearchController() setupNavigationBar() setupRendererButton() _ = (MLMediaLibrary.sharedMediaLibrary() as! MLMediaLibrary).libraryDidAppear() } public override func viewWillAppear(_ animated: Bool) { super.viewWillAppear(animated) let manager = services.rendererDiscovererManager if manager.discoverers.isEmpty { // Either didn't start or stopped before manager.start() } manager.presentingViewController = self } @objc func themeDidChange() { collectionView?.backgroundColor = PresentationTheme.current.colors.background setNeedsStatusBarAppearanceUpdate() } func setupCollectionView() { mediaDataSourceAndDelegate = MediaDataSourceAndDelegate(services: services, type: mediaType) mediaDataSourceAndDelegate?.delegate = self let playlistnib = UINib(nibName: "VLCPlaylistCollectionViewCell", bundle: nil) collectionView?.register(playlistnib, forCellWithReuseIdentifier: VLCPlaylistCollectionViewCell.cellIdentifier()) collectionView?.backgroundColor = PresentationTheme.current.colors.background collectionView?.alwaysBounceVertical = true collectionView?.dataSource = mediaDataSourceAndDelegate collectionView?.delegate = mediaDataSourceAndDelegate if #available(iOS 11.0, *) { collectionView?.dragDelegate = dragAndDropManager collectionView?.dropDelegate = dragAndDropManager } } public override func viewDidAppear(_ animated: Bool) { super.viewDidAppear(animated) reloadData() } func setupSearchController() { searchController = UISearchController(searchResultsController: nil) searchController?.searchResultsUpdater = self searchController?.dimsBackgroundDuringPresentation = false searchController?.delegate = self if let textfield = searchController?.searchBar.value(forKey: "searchField") as? UITextField { if let backgroundview = textfield.subviews.first { backgroundview.backgroundColor = UIColor.white backgroundview.layer.cornerRadius = 10 backgroundview.clipsToBounds = true } } } func setupNavigationBar() { navigationItem.leftBarButtonItem = UIBarButtonItem(title: NSLocalizedString("SORT", comment: ""), style: .plain, target: self, action: #selector(sort)) } func updateUIForContent() { let isEmpty = collectionView?.numberOfItems(inSection: 0) == 0 if isEmpty { collectionView?.setContentOffset(.zero, animated: false) } collectionView?.backgroundView = isEmpty ? emptyView : nil if #available(iOS 11.0, *) { navigationItem.searchController = isEmpty ? nil : searchController navigationController?.navigationBar.prefersLargeTitles = !isEmpty } else { navigationItem.titleView = isEmpty ? nil : searchController?.searchBar } } // MARK: Renderer private func setupRendererButton() { navigationItem.rightBarButtonItem = UIBarButtonItem(customView: rendererButton) } @objc func sort() { delegate?.mediaViewControllerDidSelectSort(self) } public override func viewWillTransition(to size: CGSize, with coordinator: UIViewControllerTransitionCoordinator) { collectionView?.collectionViewLayout.invalidateLayout() } // MARK: - MediaDatasourceAndDelegate override public func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) { if let mediaObject = services.mediaDataSource.object(at: indexPath.row, subcategory: mediaType.subcategory) as? NSManagedObject { delegate?.mediaViewControllerDidSelectMediaObject(self, mediaObject: mediaObject) } } // MARK: - Search public func updateSearchResults(for searchController: UISearchController) { searchDataSource.shouldReloadTable(forSearch: searchController.searchBar.text, searchableFiles: services.mediaDataSource.allObjects(for: mediaType.subcategory)) collectionView?.reloadData() } public func didPresentSearchController(_ searchController: UISearchController) { collectionView?.dataSource = searchDataSource } public func didDismissSearchController(_ searchController: UISearchController) { collectionView?.dataSource = mediaDataSourceAndDelegate } public func indicatorInfo(for pagerTabStripController: PagerTabStripViewController) -> IndicatorInfo { return services.mediaDataSource.indicatorInfo(for:mediaType.subcategory) } }