Prepare Gotcha 1.0 for release
This commit is contained in:
Georg Bauer
383
ios/Sources/RepositoryFileScreens.swift
Normal file
383
ios/Sources/RepositoryFileScreens.swift
Normal file
@@ -0,0 +1,383 @@
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import Highlighter
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import QuickLook
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import SwiftUI
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import UIKit
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@MainActor
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final class RepositoryHistoryViewController: RefreshingTableViewController {
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private let context: AppContext
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private let owner: String
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private let repository: String
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private let path: String
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private let emptyDetail: String
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private let loadingIndicator = UIActivityIndicatorView(style: .medium)
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private var page: CommitPage?
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private var currentPage: UInt32 = 0
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init(
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context: AppContext,
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owner: String,
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repository: String,
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path: String,
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emptyDetail: String
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) {
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self.context = context
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self.owner = owner
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self.repository = repository
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self.path = path
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self.emptyDetail = emptyDetail
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super.init()
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}
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@available(*, unavailable)
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required init?(coder: NSCoder) { fatalError("init(coder:) is not supported") }
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override func viewDidLoad() {
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super.viewDidLoad()
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tableView.register(CommitCell.self, forCellReuseIdentifier: "commit")
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loadContent(refreshing: false)
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}
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override func loadContent(refreshing: Bool) {
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loadPage(1, refreshing: refreshing)
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}
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override func loadMoreContent() {
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loadPage(currentPage + 1, refreshing: false)
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}
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private func loadPage(_ requestedPage: UInt32, refreshing: Bool) {
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if requestedPage == 1 {
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resetPagination()
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if !refreshing {
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loadingIndicator.startAnimating()
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tableView.backgroundView = loadingIndicator
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}
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}
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loadingTask?.cancel()
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loadingTask = Task {
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do {
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let page = try await context.core.commits(
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owner: owner,
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repository: repository,
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branch: nil,
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path: path,
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pages: requestedPage
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)
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guard !Task.isCancelled else { return }
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self.page = page
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currentPage = requestedPage
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finishPagination(hasMore: page.hasMore)
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tableView.reloadData()
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updateEmptyView()
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} catch {
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if !Task.isCancelled {
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show(error: error)
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failPagination()
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}
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}
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if requestedPage == 1 {
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loadingIndicator.stopAnimating()
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refreshControl?.endRefreshing()
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}
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}
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}
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override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
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page?.commits.count ?? 0
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}
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override func tableView(
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_ tableView: UITableView,
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cellForRowAt indexPath: IndexPath
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) -> UITableViewCell {
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let cell = tableView.dequeueReusableCell(withIdentifier: "commit", for: indexPath) as! CommitCell
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if let page { cell.configure(page.commits[indexPath.row], laneCount: page.laneCount) }
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return cell
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}
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override func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
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86
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}
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override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
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tableView.deselectRow(at: indexPath, animated: true)
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guard let commit = page?.commits[indexPath.row] else { return }
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navigationController?.pushViewController(
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FilesViewController(
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context: context,
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owner: owner,
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repository: repository,
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sha: commit.sha,
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branch: commit.branchLabel
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),
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animated: true
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)
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}
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private func updateEmptyView() {
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tableView.backgroundView = page?.commits.isEmpty == true
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? EmptyBackgroundView(title: "No commits", detail: emptyDetail)
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: nil
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}
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}
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final class CodeScrollView: UIScrollView {
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private let textView = UITextView(frame: .zero)
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override init(frame: CGRect) {
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super.init(frame: frame)
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translatesAutoresizingMaskIntoConstraints = false
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alwaysBounceVertical = true
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alwaysBounceHorizontal = true
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isDirectionalLockEnabled = true
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showsHorizontalScrollIndicator = true
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contentInsetAdjustmentBehavior = .never
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textView.textContainer.lineBreakMode = .byClipping
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textView.textContainer.widthTracksTextView = false
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textView.isEditable = false
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textView.isScrollEnabled = false
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textView.isSelectable = true
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addSubview(textView)
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}
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@available(*, unavailable)
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required init?(coder: NSCoder) { fatalError("init(coder:) is not supported") }
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func display(_ text: NSAttributedString) {
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let text = NSMutableAttributedString(attributedString: text)
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let paragraph = NSMutableParagraphStyle()
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paragraph.lineBreakMode = .byClipping
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text.addAttribute(.paragraphStyle, value: paragraph, range: NSRange(location: 0, length: text.length))
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textView.textStorage.setAttributedString(text)
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setNeedsLayout()
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}
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override func layoutSubviews() {
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super.layoutSubviews()
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textView.textContainer.size = CGSize(
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width: CGFloat.greatestFiniteMagnitude,
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height: CGFloat.greatestFiniteMagnitude
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)
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textView.layoutManager.ensureLayout(for: textView.textContainer)
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let textSize = textView.layoutManager.usedRect(for: textView.textContainer).size
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let size = CGSize(
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width: max(
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bounds.width,
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ceil(textSize.width + textView.textContainerInset.left + textView.textContainerInset.right)
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),
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height: max(
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bounds.height,
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ceil(textSize.height + textView.textContainerInset.top + textView.textContainerInset.bottom)
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)
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)
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textView.frame = CGRect(origin: .zero, size: size)
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contentSize = size
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}
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}
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@MainActor
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final class RepositoryFileViewController: UIViewController, QLPreviewControllerDataSource {
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private enum Mode: String {
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case preview = "Preview"
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case source = "Source"
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case content = "Content"
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case history = "History"
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}
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private let context: AppContext
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private let owner: String
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private let repository: String
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private let path: String
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private let spinner = UIActivityIndicatorView(style: .medium)
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private let modeControl = UISegmentedControl()
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private var loadingTask: Task<Void, Never>?
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private var page: RepositoryFilePage?
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private var previewURL: URL?
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private var fileLanguage: String?
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private var historyController: RepositoryHistoryViewController?
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private var displayedController: UIViewController?
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private var displayedView: UIView?
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private var modes: [Mode] = []
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init(context: AppContext, owner: String, repository: String, path: String, name: String) {
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self.context = context
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self.owner = owner
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self.repository = repository
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self.path = path
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super.init(nibName: nil, bundle: nil)
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title = name
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}
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@available(*, unavailable)
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required init?(coder: NSCoder) { fatalError("init(coder:) is not supported") }
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override func viewDidLoad() {
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super.viewDidLoad()
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view.backgroundColor = .systemBackground
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beginNavigationLoading(spinner)
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loadingTask = Task {
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do {
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let page = try await context.core.repositoryFile(
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owner: owner,
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repository: repository,
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path: path
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)
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guard !Task.isCancelled else { return }
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self.page = page
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title = page.name
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fileLanguage = page.language.isEmpty ? nil : page.language
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configureModes(for: page)
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} catch {
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if !Task.isCancelled { show(error: error) }
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}
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endNavigationLoading(spinner)
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}
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}
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deinit {
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loadingTask?.cancel()
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if let previewURL { try? FileManager.default.removeItem(at: previewURL) }
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}
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func numberOfPreviewItems(in controller: QLPreviewController) -> Int {
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previewURL == nil ? 0 : 1
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}
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func previewController(_ controller: QLPreviewController, previewItemAt index: Int) -> QLPreviewItem {
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previewURL! as NSURL
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}
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private func configureModes(for page: RepositoryFilePage) {
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navigationItem.prompt = title
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modeControl.removeAllSegments()
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modes = page.kind == .markdown
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? [.preview, .source, .history]
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: [.content, .history]
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for (index, mode) in modes.enumerated() {
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modeControl.insertSegment(withTitle: mode.rawValue, at: index, animated: false)
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}
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modeControl.selectedSegmentIndex = 0
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modeControl.addTarget(self, action: #selector(fileModeChanged(_:)), for: .valueChanged)
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modeControl.accessibilityLabel = "File view"
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navigationItem.titleView = modeControl
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showContent(page, mode: modes[0])
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}
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@objc private func fileModeChanged(_ sender: UISegmentedControl) {
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guard let page, modes.indices.contains(sender.selectedSegmentIndex) else { return }
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showContent(page, mode: modes[sender.selectedSegmentIndex])
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}
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private func showContent(_ page: RepositoryFilePage, mode: Mode) {
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switch mode {
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case .preview: showMarkdownPreview(page.text)
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case .source: showSource(page.text)
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case .content:
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if page.kind == .source {
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showSource(page.text)
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} else {
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do {
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try showQuickLook(page.data, name: page.name)
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} catch {
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show(error: error)
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}
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}
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case .history: showHistory()
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}
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}
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private func showHistory() {
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removeDisplayedView()
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let history = historyController ?? RepositoryHistoryViewController(
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context: context,
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owner: owner,
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repository: repository,
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path: path,
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emptyDetail: "No commits affect this file."
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)
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historyController = history
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addChild(history)
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history.view.frame = view.bounds
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history.view.autoresizingMask = [.flexibleWidth, .flexibleHeight]
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displayedController = history
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displayedView = history.view
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view.addSubview(history.view)
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history.didMove(toParent: self)
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}
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private func showMarkdownPreview(_ source: String) {
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removeDisplayedView()
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let preview = UIHostingController(rootView: RepositoryMarkdownPreview(source: source))
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addChild(preview)
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preview.view.frame = view.bounds
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preview.view.autoresizingMask = [.flexibleWidth, .flexibleHeight]
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displayedController = preview
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displayedView = preview.view
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view.addSubview(preview.view)
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preview.didMove(toParent: self)
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}
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private func showSource(_ source: String) {
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removeDisplayedView()
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let highlighter = Highlighter()
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highlighter?.setTheme(
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traitCollection.userInterfaceStyle == .dark ? "atom-one-dark" : "atom-one-light"
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)
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highlighter?.theme.setCodeFont(.monospacedSystemFont(ofSize: 13, weight: .regular))
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let highlighted = highlighter?.highlight(source, as: fileLanguage)
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?? NSAttributedString(string: source, attributes: [
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.font: UIFont.monospacedSystemFont(ofSize: 13, weight: .regular),
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.foregroundColor: UIColor.label,
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])
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let codeView = CodeScrollView()
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codeView.display(highlighted)
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displayedView = codeView
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view.addSubview(codeView)
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NSLayoutConstraint.activate([
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codeView.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor),
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codeView.trailingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.trailingAnchor),
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codeView.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor),
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codeView.bottomAnchor.constraint(equalTo: view.safeAreaLayoutGuide.bottomAnchor),
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])
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}
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private func removeDisplayedView() {
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displayedController?.willMove(toParent: nil)
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displayedView?.removeFromSuperview()
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displayedController?.removeFromParent()
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displayedController = nil
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displayedView = nil
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}
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private func showQuickLook(_ data: Data, name: String) throws {
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removeDisplayedView()
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if previewURL == nil {
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let url = FileManager.default.temporaryDirectory
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.appendingPathComponent("\(UUID().uuidString)-\(name)")
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try data.write(to: url, options: .atomic)
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previewURL = url
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}
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let preview = QLPreviewController()
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preview.dataSource = self
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addChild(preview)
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preview.view.frame = view.bounds
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preview.view.autoresizingMask = [.flexibleWidth, .flexibleHeight]
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displayedController = preview
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displayedView = preview.view
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view.addSubview(preview.view)
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preview.didMove(toParent: self)
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}
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}
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struct RepositoryMarkdownPreview: View {
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let source: String
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var body: some View {
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ScrollView {
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MarkdownContent(source: source)
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.padding()
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}
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.background(Color(uiColor: .systemBackground))
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}
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}
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Reference in New Issue
Block a user