nsfontmanager_convert_face.swift

@IBAction func fontFaceChanged(sender: NSPopUpButton) {
  let newIDX = sender.indexOfSelectedItem
	if let currentFont = textView?.typingAttributes[NSFontAttributeName] as? NSFont {
		let newFaceName = fontFaceNames[newIDX]          
		if let newFont = NSFontManager.sharedFontManager().convertFont(currentFont, toFace: newFaceName) {
			applyNewAttributes([NSFontAttributeName: newFont])
		}
	}
}