How to get control from a combo box selection?

Question

Created Mar ’21

Replies 2

Boosts 0

Participants 2

Using a combo box after a selection I want to get control to take some actions based on the selection after press tab or return in the field. I have tried a few controls like the one below:

Code Block // textShouldEndEditing
    func control(_ control: NSControl, textShouldEndEditing fieldEditor: NSText) -> Bool {
        print(#function,control.tag)

But the above control only gets control if the field is edited. I want control once tab, an item selected or return is pressed while on the filed. How is this done?

Answered by Claude31 in 667787022

You can create an IBAction

Code Block     @IBAction func comboAction(_ sender: NSComboBox) {
        print("Combo selected", sender.selectedTag(), sender.selectedCell()?.title)
    }

And connect it to the NSComboBox sentAction in IB / Connections Inspector

You can also:

declare that the class conforms to NSComboBoxDelegate
create an IBOutlet for the comboBox (not the BoxCell)

Code Block @IBOutlet weak var itemComboBox: NSComboBox!

set its delegate in viewDidLoad

Code Block         itemComboBox.delegate = self

Then call any of the delegate func:

Code Block     func comboBoxSelectionIsChanging(_ notification: Notification) {
        print("Selection is changing", notification)
    }
    
    func comboBoxSelectionDidChange(_ notification: Notification) {
        print("Selection has changed", notification)
    }

Boost

Answer 1

Claude31 OP

Mar ’21

Accepted Answer

You can create an IBAction

Code Block     @IBAction func comboAction(_ sender: NSComboBox) {
        print("Combo selected", sender.selectedTag(), sender.selectedCell()?.title)
    }

And connect it to the NSComboBox sentAction in IB / Connections Inspector

You can also:

declare that the class conforms to NSComboBoxDelegate
create an IBOutlet for the comboBox (not the BoxCell)

Code Block @IBOutlet weak var itemComboBox: NSComboBox!

set its delegate in viewDidLoad

Code Block         itemComboBox.delegate = self

Then call any of the delegate func:

Code Block     func comboBoxSelectionIsChanging(_ notification: Notification) {
        print("Selection is changing", notification)
    }
    
    func comboBoxSelectionDidChange(_ notification: Notification) {
        print("Selection has changed", notification)
    }

0

Answer 2

BigEagle OP

Mar ’21

Thanks Claude, I used the @IBAction because I needed the contents of the comboBox and I had tried the delegate before and could not see a way to get contents of comboBox.

0