JavaFX如何从其他阶段的控制器访问控制器？

Question

null

    public class LauncherController implements Initializable {

@FXML
private TabPane wholeTabPane;
@FXML
private Tab waitingModeTab;
@FXML
private Tab newConversationTab;

@FXML
private WaitingModeController waitingModeFXMLController;
@FXML
private NewConversationController newConversationFXMLController;

@Override
public void initialize(URL location, ResourceBundle resources) {
    TabPane tabPane = wholeTabPane;
}

public void openNewConverationTab(){
    wholeTabPane.getSelectionModel().select(newConversationTab);
}
}

我在TopMenuButtons中有一个按钮，它具有openAssisstantStage（）方法，打开新的小阶段：

public class TopMenuButtonsController {

public void openAssisstantStage(ActionEvent event) {
    Stage stage = (Stage)((Button)event.getSource()).getScene().getWindow();
    stage.setIconified(true);
    FXMLLoader loadAssisstant = new FXMLLoader(this.getClass().getResource(FXMLFilePaths.ASSISSTANT_FXML));
    Parent assisstant = null;

    try {
        javafx.geometry.Rectangle2D primaryScreenBounds = Screen.getPrimary().getVisualBounds();
        assisstant = (Parent) loadAssisstant.load();
        Stage waitingStage = new Stage();
        waitingStage.setTitle("Asystent");
        waitingStage.setScene(new Scene(assisstant));
        waitingStage.setAlwaysOnTop(true);
        waitingStage.initStyle(StageStyle.UNDECORATED);
        waitingStage.setX(primaryScreenBounds.getMaxX() - 500);
        waitingStage.setY(primaryScreenBounds.getMinY());
        waitingStage.show();
    } catch (IOException e) {
        e.printStackTrace();
    }
}
}

对于这个阶段，我还有FXML文件和控制器（AssisstantController）。只有2个按钮-第一个按钮应该打开前一个阶段和关闭电流，但第二个按钮也应该打开普雷沃阶段，关闭电流，也打开一个特定的标签在我的标签视图和做一些其他逻辑例如。获取实际localDate：

    public class AssisstantController {

@FXML
private Button maxWindowButton;
@FXML
private Button goToNewConversationButton;

@FXML
public void openMainWindow(ActionEvent actionEvent) {
    Stage stage = (Stage) ((Button) actionEvent.getSource()).getScene().getWindow();
    stage.close();
    Launcher.getMainStage().setIconified(false);
}

@FXML
public void goToNewConversation(ActionEvent actionEvent) {
    FXMLLoader loader = new FXMLLoader(getClass().getResource(FXMLFilePaths.LAUNCHER_FXML));
    LauncherController controller = (LauncherController)loader.getController();
    controller.openNewConverationTab();

    Stage stage = (Stage) ((Button) actionEvent.getSource()).getScene().getWindow();
    stage.close();
    Launcher.getMainStage().setIconified(false);

//do other logic...
}
}

我无法在LauncherController中初始化我的AssisstantController，因为assisstant不是Launcher的子级。出于同样的原因，我不能使用Mediator模式。

controller.openNewConverationTab();

带有main（）和start（）方法的启动器：

public class Launcher extends Application {

public static final String APP_NAME = "...";

public static Double AppVersion = 1.1;
private static Stage mainStage;

public static Stage getMainStage() {
    return mainStage;
}
public void openMainStage(Stage mainStage) {
    this.mainStage = mainStage;
}

@Override
public void start(Stage primaryStage) throws Exception {
    openMainStage(primaryStage);
    FXMLLoader loadMainScene = FXMLLoaderSingleton.getInstance().getLoader();
    loadMainScene.setLocation(this.getClass().getResource(FXMLFilePaths.LAUNCHER_FXML));
    Pane mainScenePane = loadMainScene.load();
    Scene mainScene = new Scene(mainScenePane);
    primaryStage.setScene(mainScene);
    primaryStage.setTitle(APP_NAME);
    primaryStage.show();
}

public static void main(String[] args) {
    launch(args);
}

}

Answer 1

一种方法是创建一个类，例如“StageConfig”

public class StageConfig
{
    private static TopMenuButtonsController tmbc = null;
    private static AssisstantController ac = null;

    public static void setTopMenuButtonsController(TopMenuButtonsController tmbc_val)
    {
        StageConfig.tmbc = tmbc_val;
    }
    public static TopMenuButtonsController getTopMenuButtonsController() 
    {
        return StageConfig.tmbc;
    }

    public static void setAssisstantController(AssisstantController ac_val)
    {
        StageConfig.ac = ac_val;
    }
    public static getAssisstantController getController() 
    {
        return StageConfig.ac;
    }

}

现在初始化它，例如

public class TopMenuButtonsController implements Initializable
{

   @Override
   public void initialize(URL location, ResourceBundle resources) 
   {
       StageConfig.setTopMenuButtonsController(this);
   }

}

现在你可以在任何地方使用控制器。

StageConfig.getTopMenuButtonsController().SOMENODE.