package org.example

import javafx.application.Application
import javafx.beans.property.*
import tornadofx.*

class Item(nullableBoolean: Boolean? = null, nullableString: String? = null) {
    var nullableString: String? by property(nullableString)
    val nullableStringProperty1: ObjectProperty<String?> = getProperty(Item::nullableString)
    val nullableStringProperty2: SimpleStringProperty = SimpleStringProperty(this, "nullableString")
    var nullableBoolean: Boolean? by property(nullableBoolean)
    val nullableBooleanProperty1: ObjectProperty<Boolean?> = getProperty(Item::nullableBoolean)
    val nullableBooleanProperty2: SimpleBooleanProperty = SimpleBooleanProperty(this, "nullableBoolean")
}

class ItemModel : ItemViewModel<Item>(Item()) {
    val nullableStringProperty1: Property<ObjectProperty<String?>> = bind(Item::nullableStringProperty1)    // instead of Property<String>
    val nullableStringProperty2: Property<String> = bind(Item::nullableStringProperty2)
    val nullableBooleanProperty1: Property<ObjectProperty<Boolean?>> = bind(Item::nullableBooleanProperty1) // instead of Property<Boolean>
    val nullableBooleanProperty2: Property<Boolean> = bind(Item::nullableBooleanProperty2)
}

class TestView : ItemFragment<Item>() {
    private val model = ItemModel().bindTo(this)

    override val root = vbox {
        label(stringBinding(model.nullableStringProperty1) {
            val propertyValue: ObjectProperty<String?>? = value
            // nullableStringProperty1 = null
            "nullableStringProperty1 = ${propertyValue?.get()}"
        })
        label(stringBinding(model.nullableStringProperty2) {
            val propertyValue: String? = value
            // nullableStringProperty2 = null
            "nullableStringProperty2 = $propertyValue"
        })
        label(stringBinding(model.nullableBooleanProperty1) {
            val propertyValue: ObjectProperty<Boolean?>? = value
            // nullableBooleanProperty1 = null
            "nullableBooleanProperty1 = ${propertyValue?.get()}"
        })
        label(stringBinding(model.nullableBooleanProperty2) {
            val propertyValue: Boolean? = value
            // nullableBooleanProperty2 = false <---
            "nullableBooleanProperty2 = $propertyValue"
        })
    }
}

class MyApp : App(TestView::class)