Swift UILabel subclass automatically call enum switch function - ios

Question

I have been creating a UILabel class called RPLabel, which is supposed to shorten all of my long list of programmatically set labels. This is the class code:
class RPLabel: UILabel {
// moneyTitle.frame = CGRect(x: 50, y: -50, width:XX, height: 35) //
required init(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)!
self.setup()
self.testForLabelType()
}
enum labelTypeEnumeration {
case title, subtitle
}
var labelType = labelTypeEnumeration.title
override init(frame: CGRect){
super.init(frame: frame)
self.setup()
}
override func awakeFromNib() {
super.awakeFromNib()
self.setup()
}
func setup(){
self.text = self.text
self.textColor = self.textColor
self.font = self.font
self.layer.display()
}
func testForLabelType() {
switch labelType {
case .title:
setupTitle()
print("setupTitle")
case .subtitle:
setupSubtitle()
print("setupSubtitle")
}
}
func setupTitle(){
self.font = UIFont.boldSystemFont(ofSize: 12)
self.textColor = UIColor.secondaryColor()
self.textAlignment = .left
}
func setupSubtitle(){
self.font = UIFont.boldSystemFont(ofSize: 18)
self.textColor = UIColor.rgb(red: 200, green: 200, blue: 200)
self.textAlignment = .left
}
}
To make a label, I use the following piece of code:
var moneyTitle = RPLabel()
moneyTitle.labelType = .title
moneyTitle.testForLabelType()
moneyTitle.text = "MONEY"
moneyTitle.frame = CGRect(x: 50, y: -50, width:XX, height: 35)
The issue that I have is that I would like to set the labelType to .title without having to write moneyTitle.testForLabelType(). In other words, I would like for that function to run automatically in the class. An alternative I would not like would be inserting the parameter in the init, so please avoid telling me to do so, thanks.

Answer 1

You can use didSet:
didSet is called immediately after the new value is stored.
var labelType = labelTypeEnumeration.title {
didSet {
testForLabelType()
}
}