使用Kotlin正确扩展小部件类

下面的代码基本上是更改按钮小部件的状态:

enum class State {  unable, enable }

fun configureState(currentState:State, button:Button ,colorInt :Int = Color.BLACK) = when (currentState)
{
    State.unable -> {
        button.isClickable = false
        button.setBackgroundColor(Color.LTGRAY)
        button.setTextColor(Color.WHITE)
    }

    State.enable -> {
        button.isClickable = true
        button.setBackgroundColor(colorInt)
        button.setTextColor(Color.WHITE)
    }
}

是的,如果我没有 enum State ,通过这样做:

fun Button.configureState(state:Int) = when(state) {
     0 -> {  //do unable stuff  }
     1 -> {  // do enable stuff } 
     else -> { // do nada }
}

fun Button.configureWith(state: this.State) = when (state) {
    this.State.unable -> { }
    this.State.enable -> { } 
}