NSTableView使用键盘获取正在编辑的单元格

class ViewController: NSViewController, NSTableViewDelegate, NSTableViewDataSource {
    @IBOutlet weak var tableView: NSTableView!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        tableView.delegate = self
        tableView.dataSource = self
    }
    
    func numberOfRows(in tableView: NSTableView) -> Int {
        return 10
    }
    
    func tableView(_ tableView: NSTableView, viewFor tableColumn: NSTableColumn?, row: Int) -> NSView? {
        let cellIdentifier = NSUserInterfaceItemIdentifier("CellIdentifier")
        let cell = tableView.makeView(withIdentifier: cellIdentifier, owner: self) as? NSTextField
        
        if cell == nil {
            let cell = NSTextField()
            cell.identifier = cellIdentifier
        }
        
        cell?.stringValue = "Cell \(row)"
        return cell
    }
    
    func tableViewSelectionDidChange(_ notification: Notification) {
        guard tableView.selectedRow >= 0 && tableView.selectedColumn >= 0 else {
            return
        }
        
        let selectedCell = tableView.view(atColumn: tableView.selectedColumn, row: tableView.selectedRow, makeIfNecessary: false) as? NSTextField
        
        if selectedCell != nil && selectedCell!.isEditable {
            selectedCell!.edit(withFrame: selectedCell!.frame, in: tableView, editor: NSApp.mainWindow!.contentView!.nextKeyView, delegate: self, event: NSApp.currentEvent!)
        }
    }
    
    func control(_ control: NSControl, textShouldEndEditing fieldEditor: NSText) -> Bool {
        // 处理编辑结束后的数据
        return true
    }
}