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[英]tornadofx listview is creating one additional null listcellfragment than items in the list
[英]TornadoFX - Creating a MVP Design
您好,我不熟悉TornadoFX,我想知道使用TornadoFX的MVP结构的最佳设计是什么?
在MVP视图中:
->会将所有事件(例如按钮单击)委派给演示者中的功能
->不与模型互动
以下是一些粗略的原型构想:
abstract class AbstractPresenter<View : tornadofx.View> : Controller() {
var view: View by Delegates.notNull()
fun attachView(view: View) {
this.view = view;
}
}
我创建一个演示者,将其自身附加到AbstractView:
abstract class AbstractView<out Presenter : AbstractPresenter<*>> : View() {
abstract val presenter: Presenter
}
现在在示例中使用它:
class SampleTestView: AbstractView<SampleTestPresenter>() {
override val presenter: SampleTestPresenter by inject()
override val root: AnchorPane by fxml()
val testButton: Button by fxid()
init {
presenter.attachView(this)
testButton.setOnAction { presenter.doSomething() }
}
}
样本演示者:
class SampleTestPresenter: AbstractPresenter<SampleWindowView>() {
fun doSomething() {
println("did it")
}
}
这是使用TornadoFX的MVP模式的不错实现吗?
编辑
进行了一些更改:
class SampleWindowView : View() {
override val root: AnchorPane by fxml()
val presenter : SampleWindowViewPresenter by inject()
val button:Button by fxid()
init {
button.setOnAction { presenter.handleButtonClick() }
}
}
class SampleWindowViewPresenter : Controller() {
val sampleView: SampleWindowView by inject()
fun handleButtonClick() {
println("clicked")
}
}
总结以上讨论,您可以简单地执行以下操作:
class SampleTestView : View() {
val presenter: SampleTestPresenter by inject()
override val root: AnchorPane by fxml()
val testButton: Button by fxid()
init {
testButton.setOnAction { presenter.doSomething() }
}
}
class SampleTestPresenter : Controller() {
val view: SampleTestView by inject()
fun doSomething() {
println("Did the thing")
}
}
如果要确保视图具有演示者,可以创建一个抽象视图并使所有视图都从该视图扩展:
abstract class AbstractView<Presenter : Controller> : View() {
abstract val presenter: Presenter
}
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