Implementing a cursor on both a cell and a row while using NSTableView

Yes you can.

I implemented something similar in an app. nbIndividus is the number of rows, nbVariables is number of columns.

selectedRowInDataTable and selectedColInDataTable are global var in the class.

I just copy the code, you would have to adapt of course.

    func doMovement(_ mouvement: NSTextMovement) {  
        
        if selectedRowInDataTable < 0 || selectedColInDataTable < 0 { return }
        
        var newRow = selectedRowInDataTable
        var newCol = selectedColInDataTable

        switch mouvement {  //  return as down
        case .return :
            newRow += 1 
            if newRow >= nbIndividus { newRow = nbIndividus - 1 ; playLightBeep() }
            
        case .tab : 
            newCol += 1   
            if newCol >= nbVariables { newCol = 0 ; playLightBeep() } 
            
        case .backtab :
            newCol -= 1     
            if newCol < 0 { newCol = nbVariables - 1 ; playLightBeep() }

        case .down:
            newRow += 1  
            if newRow >= nbIndividus { newRow = 0 ; playLightBeep() }
            
        case .up: 
            newRow -= 1     
            if newRow < 0 { newRow = nbIndividus - 1 ; playLightBeep() }
            
        default: break
        }
        
        dataTableView?.selectRowIndexes([], byExtendingSelection: false)
        dataTableView?.editColumn(newCol, row: newRow, with: nil, select: true)
        selectedRowInDataTable = newRow
        selectedColInDataTable = newCol
    }

I forgot to show how to call this func:

    func control(_ control: NSControl, textView: NSTextView, doCommandBy commandSelector: Selector) -> Bool {
        
        // 1. get row and column, multiplexed in sender's tag 
        guard let textField = control as? TextField else { return false }
        
        let rowIndiv = textField.tag % (256 * 256)
        let colVar = (highWordTag - rowIndiv) / (256 * 256)

        selectedRowInDataTable = rowIndiv   // a var of the class
        selectedColInDataTable = colVar     //  var of the class

        if commandSelector == #selector(NSResponder.insertNewline(_:)) {
            doMovement(.return)
            return true
        }
        if commandSelector == #selector(NSResponder.cancelOperation(_:)) {
            doMovement(.cancel)   
            return true
        }
        if commandSelector == #selector(NSResponder.moveDown(_:)) {
            doMovement(.down)  
            return true
        }
        
        if commandSelector == #selector(NSResponder.moveUp(_:)) {
            doMovement(.up)  
            return true
        }
        if commandSelector == #selector(NSResponder.insertTab(_:)) {
            doMovement(.tab)  
            return true
        }
        if commandSelector == #selector(NSResponder.insertBacktab(_:)) {
            doMovement(.backtab)  
            return true
        }
        return false
    }

tag is created as:

                cellView.textField!.tag = 256 * row + 256 * 256 * 256 * column

Hope that will be enough.

Thanks, understood the logic. How do you use 'selectedRowInDataTable' and 'selectedColInDataTable' to set up the cursor in the right cell?