ScalaFx: Event Handler with First Class Function

Question

i try to write an event handler in a scalaFx app. I found followin solution:

import scalafx.scene.control.ListView
import javafx.scene.input.MouseEvent
import javafx.event.EventHandler

...

    val list = new ListView[String] {
        onMouseClicked = new EventHandler[MouseEvent] {
            override def handle(event: MouseEvent) {
                doSomething(event)
            }
        }
    }

But this seems to be very Java-style boilerplate code. Is there a way to do this with a first class function like this?

        onMouseClicked = (event: MouseEvent) => doSomething(event)

Compiler says:

No implicit view available from javafx.scene.input.MouseEvent => scalafx.delegate.SFXDelegate[javafx.scene.input.MouseEvent] with javafx.scene.input.MouseEvent.

Answer 1

When you work with ScalaFX you always need to remember to use:

import scalafx.Includes._

This will resolve the error you have. There are many examples of using event handlers the ScalaFX way, for instance here:

• Event handling examples in ProScalaFX
• Event handling demos in ScalaFX-Demos
• Event filter examples