问NSTableView:如果我设置了"Row size style : Automatic“，那么所有行的大小都是0px

EN

    extension ViewController: NSTableViewDelegate {
    func tableView(_ tableView: NSTableView, viewFor tableColumn: NSTableColumn?, row: Int) -> NSView? {
        let currentOption = options[row] //options is Array of dictionaries

        if tableColumn?.identifier == NSUserInterfaceItemIdentifier(rawValue: "short") {
            let cellIdentifier = NSUserInterfaceItemIdentifier(rawValue: "shortCell")
            guard let cellView = tableView.makeView(withIdentifier: cellIdentifier, owner: self) as? NSTableCellView else { return nil }
            cellView.textField?.stringValue = currentOption["short"]!
            print(cellView.fittingSize.height)
            return cellView
        } else  if tableColumn?.identifier == NSUserInterfaceItemIdentifier(rawValue: "long") {
            let cellIdentifier = NSUserInterfaceItemIdentifier(rawValue: "longCell")
            guard let cellView = tableView.makeView(withIdentifier: cellIdentifier, owner: self) as? NSTableCellView else { return nil }
            cellView.textField?.stringValue = currentOption["long"]!
            return cellView
        }
        return nil
    }
}