tornadofx-guide

3. Components
If you need to handle a great deal of complex concurrency, you may consider using
RxKotlin with RxKotlinFX. Rx also has the ability to handle rapid user inputs and
events, and kill previous requests to only chase after the latest.
Fragment
Any View you create is a singleton, which means you typically use it in only one place at a
time. The reason for this is that the root node of the View can only have a single parent in a
JavaFX application. If you assign it another parent, it will disappear from its previous parent.
However, if you would like to create a piece of UI that is short-lived or can be used in
multiple places, consider using a Fragment . A Fragment is a special type of View
designed to have multiple instances. They are particularly useful for popups or as pieces of
a larger UI (such as ListCells, which we look at via the ListCellFragment later).
Both View and Fragment support openModal() , openWindow() , and openInternalWindow()
functions that will open the root node in a separate Window.
import javafx.stage.StageStyle
import tornadofx.*
class MyView : View() {
override val root = vbox {
button("Press Me") {
action {
find(MyFragment::class).openModal(stageStyle = StageStyle.UTILITY)
}
}
}
}
class MyFragment: Fragment() {
}
override val root = label("This is a popup")
You can also pass optional arguments to openModal() to modify a few of its behaviors
Optional Arguments for openModal()
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