xcode - collect result of NStableView with checkboxes in Swift -

i have hard time trying collect number of checkboxes checked inside second column of nstableview.

i composed nstableview 2 column (via ib), first named : bugcolumn (it contains textfiled) second named : checkedcolumn (it contains checkboxes)

here code used display strings in first column :

var objets: nsmutablearray! = nsmutablearray() 

...

extension masterviewcontroller: nstableviewdatasource {       func numberofrowsintableview(atableview: nstableview) -> int {      return self.objets.count  }   func tableview(tableview: nstableview, viewfortablecolumn tablecolumn: nstablecolumn?, row: int) -> nsview? {      var cellview: nstablecellview = tableview.makeviewwithidentifier(tablecolumn!.identifier, owner: self) as! nstablecellview          if tablecolumn!.identifier == "bugcolumn"         {         cellview.textfield!.stringvalue = self.objets.objectatindex(row) as! string         }       return cellview } 

the second column made of checkboxes appearing each element of first column.

i know corresponding text in first column each checkboxes enabled (checked).

i red few exemples nstableview but, or differents things, or in objective-c. explain how using swift? thanks