108 lines
3.5 KiB
Swift
108 lines
3.5 KiB
Swift
//
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// LoadingGalleryContentViewController.swift
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// Tusker
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//
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// Created by Shadowfacts on 3/17/24.
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// Copyright © 2024 Shadowfacts. All rights reserved.
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//
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import UIKit
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import GalleryVC
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class LoadingGalleryContentViewController: UIViewController, GalleryContentViewController {
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private let provider: () async -> (any GalleryContentViewController)?
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private var wrapped: (any GalleryContentViewController)!
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var container: GalleryContentViewControllerContainer?
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var contentSize: CGSize {
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wrapped?.contentSize ?? .zero
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}
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var activityItemsForSharing: [Any] {
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wrapped?.activityItemsForSharing ?? []
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}
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var caption: String? {
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wrapped?.caption
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}
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var canAnimateFromSourceView: Bool {
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wrapped?.canAnimateFromSourceView ?? true
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}
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init(provider: @escaping () async -> (any GalleryContentViewController)?) {
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self.provider = provider
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super.init(nibName: nil, bundle: nil)
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}
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required init?(coder: NSCoder) {
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fatalError("init(coder:) has not been implemented")
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}
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override func viewDidLoad() {
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super.viewDidLoad()
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container?.setGalleryContentLoading(true)
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Task {
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if let wrapped = await provider() {
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self.wrapped = wrapped
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wrapped.container = container
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wrapped.setControlsVisible(container?.galleryControlsVisible ?? false, animated: false)
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addChild(wrapped)
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wrapped.view.translatesAutoresizingMaskIntoConstraints = false
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view.addSubview(wrapped.view)
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NSLayoutConstraint.activate([
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wrapped.view.leadingAnchor.constraint(equalTo: view.leadingAnchor),
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wrapped.view.trailingAnchor.constraint(equalTo: view.trailingAnchor),
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wrapped.view.topAnchor.constraint(equalTo: view.topAnchor),
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wrapped.view.bottomAnchor.constraint(equalTo: view.bottomAnchor),
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])
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wrapped.didMove(toParent: self)
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container?.galleryContentChanged()
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} else {
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showErrorView()
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}
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container?.setGalleryContentLoading(false)
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}
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}
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private func showErrorView() {
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let image = UIImageView(image: UIImage(systemName: "exclamationmark.triangle.fill")!)
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image.tintColor = .secondaryLabel
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image.contentMode = .scaleAspectFit
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let label = UILabel()
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label.text = "Error Loading"
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label.font = .preferredFont(forTextStyle: .title1).withTraits(.traitBold)!
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label.textColor = .secondaryLabel
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label.adjustsFontForContentSizeCategory = true
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let stackView = UIStackView(arrangedSubviews: [
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image,
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label,
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])
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stackView.translatesAutoresizingMaskIntoConstraints = false
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stackView.axis = .vertical
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stackView.alignment = .center
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stackView.spacing = 8
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view.addSubview(stackView)
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NSLayoutConstraint.activate([
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image.widthAnchor.constraint(equalToConstant: 64),
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image.heightAnchor.constraint(equalToConstant: 64),
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stackView.centerXAnchor.constraint(equalTo: view.centerXAnchor),
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stackView.centerYAnchor.constraint(equalTo: view.centerYAnchor),
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])
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}
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func setControlsVisible(_ visible: Bool, animated: Bool) {
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wrapped?.setControlsVisible(visible, animated: animated)
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}
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}
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