96 lines
3.4 KiB
Swift
96 lines
3.4 KiB
Swift
import UIKit
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final class HistoryViewController: UITableViewController {
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private let sections: [(title: String, items: [LearnedRecord])]
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private var speechObserver: NSObjectProtocol?
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init() {
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sections = LearnedStore.shared.sectioned
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super.init(style: .plain)
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}
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@available(*, unavailable)
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required init?(coder: NSCoder) { fatalError() }
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deinit {
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if let speechObserver {
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NotificationCenter.default.removeObserver(speechObserver)
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}
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}
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override func viewDidLoad() {
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super.viewDidLoad()
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title = "学习记录"
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navigationItem.largeTitleDisplayMode = .never
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tableView.register(WordCardCell.self, forCellReuseIdentifier: "cell")
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tableView.separatorStyle = .none
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tableView.backgroundColor = .systemBackground
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tableView.contentInset.top = 8
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updateEmptyState()
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speechObserver = NotificationCenter.default.addObserver(
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forName: SpeechService.speakingDidChangeNotification, object: nil, queue: .main
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) { [weak self] _ in
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self?.updateVisibleSpeakers()
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}
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}
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private func updateEmptyState() {
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if sections.isEmpty {
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let label = UILabel()
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label.text = "暂无学习记录"
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label.textAlignment = .center
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label.textColor = .secondaryLabel
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label.font = .preferredFont(forTextStyle: .body)
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let bg = UIView()
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bg.addSubview(label)
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label.translatesAutoresizingMaskIntoConstraints = false
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NSLayoutConstraint.activate([
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label.centerXAnchor.constraint(equalTo: bg.centerXAnchor),
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label.centerYAnchor.constraint(equalTo: bg.centerYAnchor)
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])
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tableView.backgroundView = bg
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}
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}
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private func updateVisibleSpeakers() {
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for cell in tableView.visibleCells.compactMap({ $0 as? WordCardCell }) {
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cell.updateSpeakerState()
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}
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}
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override func numberOfSections(in tableView: UITableView) -> Int {
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sections.count
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}
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override func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
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sections[section].title
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}
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override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
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sections[section].items.count
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}
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override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
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let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! WordCardCell
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let record = sections[indexPath.section].items[indexPath.row]
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cell.configure(with: record.word)
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cell.onSpeak = { word in
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SpeechService.shared.speak(word.word)
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}
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cell.onLearn = { [weak self] word in
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guard let self else { return }
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let config = QuizConfig(mode: .spelling, words: [word], isStudyMode: true)
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navigationController?.pushViewController(QuizViewController(config: config), animated: true)
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}
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return cell
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}
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override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
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Haptics.selection()
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let record = sections[indexPath.section].items[indexPath.row]
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let detail = WordDetailViewController(word: record.word, categoryName: "")
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navigationController?.pushViewController(detail, animated: true)
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}
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}
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