Monadic-ScalaFX-Demo/src/main/scala/nova/monadic_sfx/implicits/package.scala

package nova.monadic_sfx

import javafx.event.ActionEvent
import monix.execution.Ack
import monix.execution.Cancelable
import monix.reactive.Observable
import monix.reactive.OverflowStrategy
import scalafx.scene.control._

package object implicits {

  implicit class MyButtonExt(val button: Button) extends AnyVal {
    def observableAction(): Observable[ActionEvent] = {
      import monix.execution.cancelables.SingleAssignCancelable
      Observable.create(OverflowStrategy.Unbounded) { sub =>
        val c = SingleAssignCancelable()
        val l = new javafx.event.EventHandler[ActionEvent] {
          override def handle(event: ActionEvent): Unit = {
            if (sub.onNext(event) == Ack.Stop) c.cancel()
          }
        }

        button.onAction = l
        c := Cancelable(() =>
          button.removeEventHandler(
            ActionEvent.ACTION,
            l
          )
        )
        c
      }
    }
  }

  // implicit class NodeExt(val node: Node) {
  //   def lookup2[T <: SFXDelegate[_]](
  //       selector: String
  //   )(implicit c: ClassTag[T]) = {
  //     val t = c.runtimeClass
  //     Option(node.delegate.lookup(selector)) match {
  //       case Some(value) =>
  //         if (value.getClass == t) Some(value) else None
  //       case None => None
  //     }
  //   }

  //   val x = node.lookup2("")
  // }

}