Simple Swing Application with scala.react * github.com/ingoem/scala-react

gistfile1.txt

This is based on the scala.react library. 
It should print "click" on the console every time you click the button.

Gui.scala

import MySwingDomain._

object Gui extends ReactiveSwingApp {
  val button = new MyButton("test")

  def top = new MainFrame {
    contents = new FlowPanel {
      contents += button
    }
  }
  schedule { ConsoleObserver().obs }
}

case class ConsoleObserver() extends Observing {
  def obs {
    observe(Gui.button.actionPerformed)(_ => println("click"))
  }
}

MyButton.scala

import MySwingDomain._

class MyButton(text: String) extends Button(text) with HasAction

trait HasAction extends Observing {
  this: AbstractButton =>

  def getAction() = peer.getAction
  def addActionListener(a: ActionListener) = peer.addActionListener(a)
  def removeActionListener(a: ActionListener) = peer.removeActionListener(a)

  val actionPerformed: Events[Action] =
    new EventSource[Action](MySwingDomain.owner) {
      source =>
      addActionListener(new ActionListener {
        def actionPerformed(e: ActionEvent) = { source << getAction }
      })
    }
}

MySwingDomain.scala

object MySwingDomain extends SwingDomain {
  self:Domain =>

  val scheduler = new SwingScheduler()
  val engine = new Engine
}

abstract class SwingDomain extends Domain {

  trait ReactiveSwingApp extends SimpleSwingApplication {
    override def main(args: Array[String]) {
      schedule { startup(args) }
      start()
    }
  }

}