ObservableValue

class MainView : View("Hello TornadoFX") {
    val catModel = CatModel()

    val cats = mutableListOf<Cat>().observable()

    init {
        cats.add(Cat("<https://cdn.pixabay.com/photo/2018/05/04/16/50/cat-3374422_960_720.jpg>"))
        cats.add(Cat("<https://cdn.pixabay.com/photo/2018/03/26/20/49/tiger-3264048_960_720.jpg>"))
        cats.add(Cat("<https://cdn.pixabay.com/photo/2017/12/26/16/09/lion-3040797_960_720.jpg>"))
        cats.add(Cat("<https://cdn.pixabay.com/photo/2017/11/14/13/06/kitty-2948404_960_720.jpg>"))
        cats.add(Cat("<https://cdn.pixabay.com/photo/2014/04/13/20/49/cat-323262_960_720.jpg>"))
    }

    override val root = splitpane {
        setPrefSize(1000.0, 600.0)
        tableview(cats) {
            column("URL", Cat::catImageProperty)
            bindSelected(catModel)
        }
        vbox {
            alignment = Pos.TOP_CENTER
            label(catModel.catImage) {
                style {
                    fontWeight = FontWeight.BOLD
                    font = Font.font("Arial Bold")
                }
            }
            imageview(catModel.catImage) {
                fitWidth = 500.0
                fitHeight = 400.0
                isPreserveRatio = true
                isCache = true
            }
        }
    }
}

class Cat(cateImage: String) {
    val catImageProperty = SimpleStringProperty(cateImage)
    var catImage by catImageProperty

    override fun toString(): String {
        return "Cat (catImage=$catImage)"
    }
}

class CatModel : ItemViewModel<Cat>() {
    val catImage = bind(Cat::catImageProperty)
}

java.awt.Button

javafx.scene.control.Button

launch<MyApp>(args)

tableview(data) {
                    column("Title ${item.name}", Data::value)
                    for ((title, value) in data.map) {
                           column(title, InnerData::value)
                    }
                }

Application.launch(MyApp::class.java, *args)

launch<MyApp>(args)

operator fun EventTarget.plusAssign(node: Node) { addChildIfPossible(node)}

+=

import javafx.scene.control.Button
import javafx.scene.layout.VBox
import tornadofx.*

fun main(args: Array<String>) {
	launch<MyApp>(args)
}

class MyApp : App(MyView::class)

class MyView : View() {
	override val root = VBox()

	init {
		root += Button("Press Me")
	}
}

Application.launch(MyApp::class.java, *args)