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.exampleUiActor02
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) {
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