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This code compiles OK, but the ComboBox (cbxColors) is empty - not populated from the Data Source (array: COLORS_OF). Uses Data Source is checked in IB.

func numberOfItemsInComboBox() returns the correct result: 5.

func comboBox() is not doing its job.

What am I missing?

EDITED: Now working.

import Cocoa

@NSApplicationMain
class AppDelegate: NSObject, NSApplicationDelegate, NSComboBoxDelegate, NSComboBoxDataSource {

@IBOutlet weak var window: NSWindow!


func applicationDidFinishLaunching(aNotification: NSNotification) {

    cbxColors.dataSource = self

    numberOfItemsInComboBoxCell(cbxColors)
    comboBoxCell(cbxColors, objectValueForItemAtIndex: 0)
}

func applicationWillTerminate(aNotification: NSNotification) {

}

@IBOutlet weak var cbxColors: NSComboBox!
@IBOutlet weak var txtResult: NSTextField!


@IBAction func actColors(sender: NSComboBox) {
    // display User selected item in 'txtResult'
}

func numberOfItemsInComboBoxCell(aComboBox: NSComboBox) -> Int {
    return(COLORS_OF.count)
}

func comboBoxCell(aComboBox: NSComboBox, objectValueForItemAtIndex index: Int) -> AnyObject {
    return(COLORS_OF[index])
}

let COLORS_OF = [ "Blue", "Green", "Purple", "Red", "Yellow" ]
}
San Lewy
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  • What do you mean by "not doing it's job"? Is your "cbxColors" IBoutlet correctly hooked and not nil? Why do you have "NSTextFieldCell" IBoutlet instead of "NSTextField" ? – Marek H Oct 06 '15 at 09:46
  • @xhruso00 "cbxColors" IBOutlet is correctly hooked to the ComboBox in IB. I changed "NSTextFieldCell! as suggested. I say "not doing its job" because the ComboBox is not getting populated. – San Lewy Oct 06 '15 at 10:38

1 Answers1

3

You probably forgot to check Uses Data Source or you have to delete datasource connection and reconnect it again (weird bug of Xcode).

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Other then that if your outlets are correctly hooked your code works.

enter image description here

Marek H
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  • As I stated, 'Uses Data Source' is checked. – San Lewy Oct 06 '15 at 15:24
  • Does your code stop on breakpoints (numberOfItems?) What OS X do you use? Can you attach sample project (works for me out of box so I will test if your project is OK). – Marek H Oct 06 '15 at 15:31
  • The example now works. I added this statement: cbxColors.dataSource = self and added 'Cell' to the two functions and calls. – San Lewy Oct 06 '15 at 15:59
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    This means you did not have all outlets hooked; namely datasource ;) Sometimes there is a bug in Xcode so you have to delete connection and reconnect. – Marek H Oct 06 '15 at 16:10
  • Yes, that was the case. When I deleted and reconnect the datasource I didn't need the code I added - it worked as I thought it should have. If you would like to post your comment as an answer, I would be pleased to accept it. Thanks. – San Lewy Oct 06 '15 at 16:38
  • Updated the answer. Hope it helps other – Marek H Oct 06 '15 at 16:54