1 /*
<lambda>null2 * Copyright 2016-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license.
3 */
4
5 // This file was automatically generated from coroutines-guide-ui.md by Knit tool. Do not edit.
6 package kotlinx.coroutines.javafx.guide.exampleUiActor03
7
8 import kotlinx.coroutines.*
9 import kotlinx.coroutines.channels.*
10 import kotlinx.coroutines.javafx.JavaFx as Main
11 import javafx.application.Application
12 import javafx.event.EventHandler
13 import javafx.geometry.*
14 import javafx.scene.*
15 import javafx.scene.input.MouseEvent
16 import javafx.scene.layout.StackPane
17 import javafx.scene.paint.Color
18 import javafx.scene.shape.Circle
19 import javafx.scene.text.Text
20 import javafx.stage.Stage
21
22 fun main(args: Array<String>) {
23 Application.launch(ExampleApp::class.java, *args)
24 }
25
26 class ExampleApp : Application() {
<lambda>null27 val hello = Text("Hello World!").apply {
28 fill = Color.valueOf("#C0C0C0")
29 }
30
31 val fab = Circle(20.0, Color.valueOf("#FF4081"))
32
<lambda>null33 val root = StackPane().apply {
34 children += hello
35 children += fab
36 StackPane.setAlignment(hello, Pos.CENTER)
37 StackPane.setAlignment(fab, Pos.BOTTOM_RIGHT)
38 StackPane.setMargin(fab, Insets(15.0))
39 }
40
<lambda>null41 val scene = Scene(root, 240.0, 380.0).apply {
42 fill = Color.valueOf("#303030")
43 }
44
startnull45 override fun start(stage: Stage) {
46 stage.title = "Example"
47 stage.scene = scene
48 stage.show()
49 setup(hello, fab)
50 }
51 }
52
setupnull53 fun setup(hello: Text, fab: Circle) {
54 fab.onClick { // start coroutine when the circle is clicked
55 for (i in 10 downTo 1) { // countdown from 10 to 1
56 hello.text = "Countdown $i ..." // update text
57 delay(500) // wait half a second
58 }
59 hello.text = "Done!"
60 }
61 }
62
onClicknull63 fun Node.onClick(action: suspend (MouseEvent) -> Unit) {
64 // launch one actor to handle all events on this node
65 val eventActor = GlobalScope.actor<MouseEvent>(Dispatchers.Main, capacity = Channel.CONFLATED) { // <--- Changed here
66 for (event in channel) action(event) // pass event to action
67 }
68 // install a listener to offer events to this actor
69 onMouseClicked = EventHandler { event ->
70 eventActor.offer(event)
71 }
72 }
73