// VocabularyTableViewCell.swift

import UIKit

class VocabularyTableViewCell: UITableViewCell {
    
    @IBOutlet weak var lbWord: UILabel!
    @IBOutlet weak var btnSound: UIButton!
    @IBOutlet weak var lbSound: UILabel!
    @IBOutlet weak var btnMeaning: UIButton!
    @IBOutlet weak var lbMeaning: UILabel!
    @IBOutlet weak var btnBookmark: UIButton!
    
    var onClickSound: ((_ sender: UIButton) -> Void)?
    var onClickMeaning: ((_ sender: UIButton) -> Void)?
    var onClickBookmark: ((_ sender: UIButton) -> Void)?
    var onClickPronounce: ((_ sender: UIButton) -> Void)?
    
    override func awakeFromNib() {
        super.awakeFromNib()
        btnMeaning.titleLabel?.textAlignment = .center
        lbWord.adjustsFontSizeToFitWidth = true
        btnSound.titleLabel?.adjustsFontSizeToFitWidth = true
    }
    
    @IBAction func onClickSound(_ sender: UIButton) {
        onClickSound?(sender)
    }
    @IBAction func onClickMeaning(_ sender: UIButton) {
        onClickMeaning?(sender)
    }
    @IBAction func onClickBookmark(_ sender: UIButton) {
        onClickBookmark?(sender)
    }
    @IBAction func onClickPronounce(_ sender: UIButton) {
        onClickPronounce?(sender)
    }
    
    override func setSelected(_ selected: Bool, animated: Bool) {
        super.setSelected(selected, animated: animated)
    }
}

// VocabularyTableViewHandler.swift
...
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell: VocabularyTableViewCell
    let vocabularyForCell: VocabularyForCell = vocabulariesForCell[indexPath.row]
    if let reusableCell = tableView.dequeueReusableCell(withIdentifier: String(describing: VocabularyTableViewCell.self), for: indexPath) as? VocabularyTableViewCell {
        cell = reusableCell
    } else {
        let objectArray = Bundle.main.loadNibNamed(String(describing: VocabularyTableViewCell.self), owner: nil, options: nil)
        cell = objectArray![0] as! VocabularyTableViewCell
    }
    cell.onClickSound = { [weak self] sender in
        self?.onClickSound(cell, sender, vocabularyForCell: vocabularyForCell)
    }
    cell.onClickMeaning = { [weak self] sender in
        self?.onClickMeaning(cell, sender, vocabularyForCell: vocabularyForCell)
    }
    cell.onClickBookmark = { [weak self] sender in
        self?.onClickBookmark(cell, sender, vocabularyForCell: vocabularyForCell)
    }
    cell.onClickPronounce = { [weak self] sender in
        self?.onClickPronounce(cell, sender, vocabularyForCell: vocabularyForCell)
    }
    
    initializeCell(cell: cell, vocabularyForCell: vocabularyForCell)
    
    return cell
}
...

// VocabularyTestResultViewController.swift

import UIKit

class VocabularyTestResultViewController: UIViewController {
    ...
    private var vocabularyTableDataSource: VocabularyTableViewHandler?
    ...
    @IBOutlet weak var tableView: UITableView!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        vocabularyTableDataSource = VocabularyTableViewHandler(vocabulariesForCell: vocabulariesForCell)
        
        tableView.delegate = vocabularyTableDataSource
        tableView.dataSource = vocabularyTableDataSource
        tableView.rowHeight = CGFloat(CommonConstant.cellSize)
        tableView.register(UINib(nibName: String(describing: VocabularyTableViewCell.self), bundle: nil), forCellReuseIdentifier: String(describing: VocabularyTableViewCell.self))
        ...

// KanjiTableViewHandler.swift
...
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
    return UITableView.automaticDimension
}
...
private func onClickExpand(_ cell: KanjiTableViewCell, _ sender: UIButton, kanjiForCell: KanjiForCell, indexPath: IndexPath) {
    kanjiForCell.isExpanded = !kanjiForCell.isExpanded
    initializeCell(cell: cell, kanjiForCell: kanjiForCell)
    tableView.reloadRows(at: [indexPath], with: .automatic)
}
...

// ExpandableAreaView.swift
...
lbTitle.clipsToBounds = true
...