JavaFX类控制器阶段/窗口引用 [英] JavaFX Class controller Stage/Window reference

问题描述

有没有办法从关联的类控制器获取FXML加载文件的Stage / Window对象？

Is there any way of getting the Stage/Window object of an FXML loaded file from the associated class controller?

特别是，我有一个模态窗口的控制器我需要舞台来关闭它。

Particularly, I have a controller for a modal window and I need the Stage to close it.

推荐答案

我找不到一个优雅的解决方案。但我发现了这两种选择：

I could not find an elegant solution to the problem. But I found these two alternatives:

• 从场景中的节点获取窗口引用

• Getting the window reference from a Node in the Scene

@FXML private Button closeButton ;

public void handleCloseButton() {
  Scene scene = closeButton.getScene();
  if (scene != null) {
    Window window = scene.getWindow();
    if (window != null) {
      window.hide();
    }
  }
}

传递窗口加载FXML时作为控制器的参数。

Passing the Window as an argument to the controller when the FXML is loaded.

String resource = "/modalWindow.fxml";

URL location = getClass().getResource(resource);
FXMLLoader fxmlLoader = new FXMLLoader();
fxmlLoader.setLocation(location);
fxmlLoader.setBuilderFactory(new JavaFXBuilderFactory());

Parent root = (Parent) fxmlLoader.load();

controller = (FormController) fxmlLoader.getController();

dialogStage = new Stage();

controller.setStage(dialogStage);

...

FormController必须实现setStage方法。

And FormController must implement the setStage method.

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