swift - tableview constraints to optimal window width -

i working swift 4 macos , have trouble constraints in nstableview.

i have tableview:

you can see, textfields not use complete width of tableview. fill complete width textfields, red textfield should larger width this:

but doesn't work yet :( example: https://drive.google.com/open?id=0b8pbtmqt9gdore1xsuuxevfawvu

can me?

you describing nsstackview. it's view distributes arranged subviews you, in accordance configuration. want fill configuration red text field has lower content hugging priority other fields, alone can stretch.