TableViewEnums

Implement simple UITableView using Enums

I have been playing around with an approach to use the new Swift enum to build simple UITableViews. The idea is to wrap up all boilerplate code for registering reuseIdentifiers, dequeueing cells and adding new types of cells, in an enum that is easy to understand and maintain.

We start off by defining a Cell protocol that describes the behavior.

protocol Cell {
    var reuseIdentifier: String { get }
    var type: UITableViewCell.Type { get }
}

And by declaring a conforming TableViewCell enum.

enum TableViewCell: Cell {
    case switchButton, subtitleLabel

    var reuseIdentifier: String {
        switch self {
        case .switchButton: return "switchButton"
        case .subtitleLabel: return "subtitleLabel"
        }
    }

    var type: UITableViewCell.Type {
        switch self {
        case .switchButton: return SwitchButtonTableViewCell.self
        case .subtitleLabel: return SubtitleLabelTableViewCell.self
        }
    }
}

With this setup, registering cells with the tableView looks something like this.

func setupTableView() {
    let cells = [TableViewCell.switchButton, TableViewCell.subtitleLabel]
    for cell in cells {
        tableView.register(cell.type, forCellReuseIdentifier: cell.reuseIdentifier)
    }
}

And this is dequeueing new cells.

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: cells[indexPath.row].reuseIdentifier,
                                             for: indexPath)
    return cell
}

Have ideas to improve this? Please let me know by creating an issue