How to update NSResponder selector in swift 2.2

Question

I am implementing a NSControlTextEditingDelegate protocol and I don't know which class/protocol i should match with e.g. commandSelector. #selector(WhichClass.moveUp(_:)) so that the equality will pass.

Currently everything is ok with swift 2.1:

func control(control: NSControl, textView: NSTextView, doCommandBySelector commandSelector: Selector) -> Bool {

    var goUp = false
    var goDown = false

        if (commandSelector == Selector("moveUp:") ||
        commandSelector == Selector("moveBackward:") ||
        commandSelector == Selector("moveUpAndModifySelection:") ||
        commandSelector == Selector("moveParagraphBackwardAndModifySelection:")
            )

        {
            goUp = true
        }
        if (commandSelector == Selector("moveDown:") ||
        commandSelector == Selector("moveForward:") ||
        commandSelector == Selector("moveDownAndModifySelection:") ||
        commandSelector == Selector("moveParagraphForwardAndModifySelection:")
            ) {
            goDown = true

        }
//...
}

Answer 1

Try this:

if (commandSelector == #selector(NSResponder.moveUp) ||

You can write it as the following if you prefer:

if (commandSelector == #selector(NSResponder.moveUp(_:)) ||

In fact, generated Selector instance from #selector does not contain the class info. So, you just find any class defining the same method with the same signature.

---

And if you cannot find any class, you can define it in your own protocol and use the protocol name.

@objc protocol MyProtocol {
    func moveUp(_:AnyObject)
    //...
}

And use it in #selector:

if (commandSelector == #selector(MyProtocol.moveUp(_:)) ||

---

The latter should be the last way, but it actually works.