tornadofx-guide

EventBus
Many feel that events might be better suited for passing signals rather than actual data, so
you might also consider subscribing to signals and then actively retrieving the data you need
instead.
Unsubscribe after event is processed
In some situations you might want to only want to trigger your listener a certain amount of
times. Admittedly, this is not very convenient. You can pass the times = n parameter to
subscribe to control how many times the event is triggered before it is unsubscribed:
object MyEvent : FXEvent()
class MyView : View() {
override val root = stackpane {
paddingAll = 100
button("Fire!").action {
fire(MyEvent)
}
}
init {
subscribe(times = 2) {
alert(INFORMATION, "Event received!", "This message should only appear twi
ce.")
}
}
}
You can also manually unsubscribe based on an arbitrary condition, or simply after the first
run:
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