从Java到Kotlin

从Java到Kotlin,java,javafx,kotlin,Java,Javafx,Kotlin,我正在尝试将一个用java编写的简单JavaFXCalc翻译成Kotlin代码。->java源代码 我在Kotlin翻译了这个: import Model.Math import javafx.application.Application import javafx.beans.binding.Bindings import javafx.beans.property.* import javafx.event.ActionEvent import javafx.event.EventHand

我正在尝试将一个用java编写的简单JavaFXCalc翻译成Kotlin代码。->java源代码

我在Kotlin翻译了这个:

import Model.Math
import javafx.application.Application
import javafx.beans.binding.Bindings
import javafx.beans.property.*
import javafx.event.ActionEvent
import javafx.event.EventHandler
import javafx.geometry.Pos
import javafx.scene.Scene
import javafx.scene.control.*
import javafx.scene.input.KeyEvent
import javafx.scene.layout.*
import javafx.stage.Stage
import javafx.stage.StageStyle

import java.util.HashMap

// A simple Kotlin, JavaFX application
class KotlinCode : Application() {

    private val accelerators = HashMap<String, Button>()

    private val stackValue = SimpleDoubleProperty()
    private val value = SimpleDoubleProperty()

    enum class Op {
        NOOP, ADD, SUBTRACT, MULTIPLY, DIVIDE
    }

    private var curOp = Op.NOOP
    private var stackOp = Op.NOOP

    private val template = arrayOf(arrayOf("7", "8", "9", "/"), arrayOf("4", "5", "6", "*"), arrayOf("1", "2", "3", "-"), arrayOf("0", "c", "=", "+"))

    override fun start(stage: Stage) {
        val screen = createScreen()
        val buttons = createButtons()

        stage.title = "Calc"
        stage.initStyle(StageStyle.UTILITY)
        stage.isResizable = false
        stage.scene = Scene(createLayout(screen, buttons))
        stage.show()
    }

    private fun createLayout(screen: TextField, buttons: TilePane): VBox {
        val layout = VBox(20.0)
        layout.alignment = Pos.CENTER
        layout.style = "-fx-background-color: chocolate; -fx-padding: 20; -fx-font-size: 20;"
        layout.children.setAll(screen, buttons)
        handleAccelerators(layout)
        screen.prefWidthProperty().bind(buttons.widthProperty())
        return layout
    }

    private fun handleAccelerators(layout: VBox) {
        layout.addEventFilter(KeyEvent.KEY_PRESSED) { keyEvent ->
            val activated = accelerators[keyEvent.text]
            activated?.fire()
        }
    }

    private fun createScreen(): TextField {
        val screen = TextField()
        screen.style = "-fx-background-color: aquamarine;"
        screen.alignment = Pos.CENTER_RIGHT
        screen.isEditable = false
        screen.textProperty().bind(Bindings.format("%.0f", value))
        return screen
    }

    private fun createButtons(): TilePane {
        val buttons = TilePane()
        buttons.vgap = 7.0
        buttons.hgap = 7.0
        buttons.prefColumns = template[0].size
        for (r in template) {
            for (s in r) {
                buttons.children.add(createButton(s))
            }
        }
        return buttons
    }

    private fun createButton(s: String): Button {
        val button = makeStandardButton(s)

        if (s.matches("[0-9]".toRegex())) {
            makeNumericButton(s, button)
            //this.javaCode.makeNumericButton(s, button, curOp, value, stackValue, stackOp)
        } else {
            val triggerOp = determineOperand(s)
            if (triggerOp.get() != Op.NOOP) {
                //this.javaCode.makeOperandButton(button, triggerOp, this.curOp)
                makeOperandButton(button, triggerOp)
            } else if ("c" == s) {
                //this.javaCode.makeClearButton(button, value)
                makeClearButton(button)
            } else if ("=" == s) {
                makeEqualsButton(button)
            }
        }

        return button
    }

    private fun determineOperand(s: String): ObjectProperty<Op> {
        val triggerOp = SimpleObjectProperty(Op.NOOP)
        when (s) {
            "+" -> triggerOp.set(Op.ADD)
            "-" -> triggerOp.set(Op.SUBTRACT)
            "*" -> triggerOp.set(Op.MULTIPLY)
            "/" -> triggerOp.set(Op.DIVIDE)
        }
        return triggerOp
    }

    private fun makeStandardButton(s: String): Button {
        val button = Button(s)
        button.style = "-fx-base: beige;"
        accelerators.put(s, button)
        button.setMaxSize(java.lang.Double.MAX_VALUE, java.lang.Double.MAX_VALUE)
        return button
    }

    private fun makeEqualsButton(button: Button) {
        button.style = "-fx-base: ghostwhite;"
        button.setOnAction { actionEvent ->
            // On instancie notre objet Kotlin
            val math = Math()
            when (stackOp) {
                Op.NOOP -> {
                }
                Op.ADD -> value.set(math.adition(stackValue.get(), value.get()))
                Op.SUBTRACT -> value.set(math.substraction(stackValue.get(), value.get()))
                Op.MULTIPLY -> value.set(math.multiplication(stackValue.get(), value.get()))
                Op.DIVIDE -> value.set(math.division(stackValue.get(), value.get()))
            }
        }
    }

    private fun makeOperandButton(button: Button, triggerOp: ObjectProperty<Op>) {
        button.onAction = EventHandler {
            fun handle(actionEvent: ActionEvent) {
                curOp = triggerOp.get()
            }
        }
    }

    private fun makeNumericButton(s: String, button: Button) {
        button.onAction = EventHandler {
            fun handle(actionEvent: ActionEvent) {
                if (curOp == Op.NOOP) {
                    value.set(value.get() * 10 + Integer.parseInt(s))
                } else {
                    stackValue.set(value.get())
                    value.set(java.lang.Double.parseDouble(s))
                    stackOp = curOp
                    curOp = Op.NOOP
                }
            }
        }
    }

    private fun makeClearButton(button: Button) {
        button.onAction = EventHandler {
            fun handle(actionEvent: ActionEvent) {
                value.set(0.0)
            }
        }
    }

    companion object {
        @JvmStatic
        fun main(args: Array<String>) {
            launch(KotlinCode::class.java)
        }
    }
}
import Model.Math
导入javafx.application.application
导入javafx.beans.binding.Bindings
导入javafx.beans.property*
导入javafx.event.ActionEvent
导入javafx.event.EventHandler
导入javafx.geometry.Pos
导入javafx.scene.scene
导入javafx.scene.control*
导入javafx.scene.input.KeyEvent
导入javafx.scene.layout*
导入javafx.stage.stage
导入javafx.stage.StageStyle
导入java.util.HashMap
//一个简单的Kotlin、JavaFX应用程序
类KotlinCode:Application(){
私有val加速器=HashMap()
private val stackValue=SimpleDoubleProperty()
private val value=SimpleDoubleProperty()
枚举类Op{
NOOP,加,减,乘,除
}
私有变量curOp=Op.NOOP
私有变量stackOp=Op.NOOP
private val template=arrayOf(arrayOf(“7”、“8”、“9”和“/”),arrayOf(“4”、“5”、“6”和“*”),arrayOf(“1”、“2”、“3”和“-”),arrayOf(“0”、“c”和“=”、“+”)
覆盖乐趣开始(阶段:阶段){
val screen=createScreen()
val buttons=createButtons()
stage.title=“计算”
stage.initStyle(StageStyle.UTILITY)
stage.isResizable=false
stage.scene=场景(创建布局(屏幕、按钮))
舞台秀
}
private fun createLayout(屏幕:文本字段,按钮:TilePane):VBox{
val布局=VBox(20.0)
布局对齐=位置中心
layout.style=“-fx背景色:巧克力色;-fx填充:20;-fx字体大小:20;”
布局.children.setAll(屏幕、按钮)
手动加速器(布局)
screen.prefWidthProperty().bind(buttons.widthProperty())
返回布局
}
私人娱乐手持加速器(布局:VBox){
layout.addEventFilter(KeyEvent.KEY_按下){KeyEvent->
val激活=加速器[keyEvent.text]
激活?.fire()
}
}
private fun createScreen():TextField{
val screen=TextField()
screen.style=“-fx背景色:海蓝宝石;”
屏幕对齐=位置居中\右
screen.isEditable=false
screen.textProperty().bind(Bindings.format(“%.0f”,value))
返回屏幕
}
private fun createButtons():TilePane{
val按钮=TilePane()
按钮。vgap=7.0
buttons.hgap=7.0
buttons.prefColumns=模板[0]。大小
用于(模板中的r){
对于(右中的s){
按钮。子项。添加(createButton)
}
}
返回按钮
}
private fun createButton(s:String):按钮{
val按钮=生成标准按钮
如果(s.matches(“[0-9]”)。toRegex()){
makeNumericButton(s,按钮)
//makeNumericButton(s,button,curOp,value,stackValue,stackOp)
}否则{
val triggerOp=确定词和
if(triggerOp.get()!=Op.NOOP){
//this.javaCode.makeOperationButton(按钮、触发器、this.curOp)
MakeOperationButton(按钮,触发器)
}否则,如果(“c”==s){
//this.javaCode.makeClearButton(按钮,值)
makeClearButton(按钮)
}否则,如果(“=”==s){
MakequalButton(按钮)
}
}
返回按钮
}
private-fun-determineOperand(s:String):ObjectProperty{
val triggerOp=SimpleObjectProperty(Op.NOOP)
何时{
“+”->triggerOp.set(Op.ADD)
“-”->triggerOp.set(Op.SUBTRACT)
“*”->triggerOp.set(Op.MULTIPLY)
“/”->triggerOp.set(Op.DIVIDE)
}
返回触发器
}
私人娱乐制作标准按钮(s:String):按钮{
val按钮=按钮
button.style=“-fx基底:米色;”
加速器。放置(s,按钮)
setMaxSize(java.lang.Double.MAX_值,java.lang.Double.MAX_值)
返回按钮
}
私人娱乐MakequalsButton(按钮:button){
button.style=“-fx base:ghostwite;”
button.setOnAction{actionEvent->
//关于实例notre objet Kotlin
val math=math()
何时(stackOp){
Op.NOOP->{
}
Op.ADD->value.set(math.adion(stackValue.get(),value.get())
Op.SUBTRACT->value.set(math.subtraction(stackValue.get(),value.get())
Op.MULTIPLY->value.set(math.MULTIPLY(stackValue.get(),value.get()))
Op.DIVIDE->value.set(math.DIVIDE(stackValue.get(),value.get()))
}
}
}
私有按钮(按钮:按钮,触发器:对象属性){
button.onAction=EventHandler{
趣味手柄(actionEvent:actionEvent){
curOp=triggerOp.get()
}
}
}
private fun makeNumericButton(s:String,button:button){
button.onAction=EventHandler{
趣味手柄(actionEvent:actionEvent){
如果(curOp==Op.NOOP){
value.set(value.get()*10+Integer.parseInt)
}否则{
stackValue.set(value.get())
value.set(java.lang.Double.parseDouble)
stackOp=curOp
curOp=Op.NOOP
}
}
}
}
私人娱乐makeClearButton(按钮:button){
button.onAction=EventHandler{
趣味手柄(actionEvent:actionEvent){
值。设置(0.0)
}
}
}
伴星{
@JvmStatic
趣味主线(args:Array){
启动(KotlinCode::class.java)
}
}
}
现在,calc启动,但没有绑定到按钮的操作。有人有线索吗

我猜是这样的
private fun makeOperandButton(button: Button, triggerOp: ObjectProperty<Op>) {
    button.onAction = EventHandler {
        curOp = triggerOp.get()
    }
}

private fun makeNumericButton(s: String, button: Button) {
    button.onAction = EventHandler {
        if (curOp == Op.NOOP) {
            value.set(value.get() * 10 + Integer.parseInt(s))
        } else {
            stackValue.set(value.get())
            value.set(java.lang.Double.parseDouble(s))
            stackOp = curOp
            curOp = Op.NOOP
        }
    }
}

private fun makeClearButton(button: Button) {
    button.onAction = EventHandler {
        value.set(0.0)
    }
}