java - 关闭时重定向到另一个窗口

Question

我有成功登录后正在调用的用户窗口。用户阶段由 LoginController 类中的以下代码调用。

public void login(ActionEvent event) {
    try {
        if (loginModel.isLoggedIn(txtLogin.getText(), txtPassField.getText())) {
            lblDBStatus.setText("Username and password are correct");

            String fxmlFile = "/fxml/User.fxml";
            LOG.debug("Loading FXML for User view from: {}", fxmlFile);

            LOG.info("Hiding login page");
            ((Node) event.getSource()).getScene().getWindow().hide();


            Stage stage = new Stage();
            FXMLLoader loader = new FXMLLoader();
            Pane rootNode = loader.load(getClass().getResource(fxmlFile).openStream());
            UserController userController = (UserController) loader.getController();
            userController.getUserName(txtLogin.getText());

            LOG.info("Showing User page");
            Scene scene = new Scene(rootNode);
            scene.getStylesheets().add("/styles/user-controller.css");

            stage.setTitle("WindOptimizer");
            stage.setScene(scene);
            stage.show();


        } else {
            lblDBStatus.setText("Username and password are incorrect");

        }
    } catch (SQLException | IOException e) {
        e.printStackTrace();
    }
}

现在我有另一个事件处理程序，它正在从 UserController 重定向我，它正在创建 Turbines 窗口。

public void openTurbinesTab(ActionEvent event) {

    try {
        String fxmlFile = "/fxml/WindTurbines.fxml";
        LOG.debug("Loading FXML for Turbines view from: {}", fxmlFile);

        LOG.info("Hiding user page");
        ((Node) event.getSource()).getScene().getWindow().hide();


        Stage stage = new Stage();
        FXMLLoader loader = new FXMLLoader();
        Pane rootNode = loader.load(getClass().getResource(fxmlFile).openStream());
        TurbinesController turbinesController = (TurbinesController) loader.getController();
        turbinesController.getStationName(stationCB.getValue().toString());

        LOG.info("Showing Turbines page");
        Scene scene = new Scene(rootNode);
        scene.getStylesheets().add("/styles/turbines-controller.css");

        stage.setTitle("WindOptimizer");
        stage.setScene(scene);
        stage.show();

        stage.setOnCloseRequest((WindowEvent event1) -> {


        });

    } catch (IOException e) {
        e.printStackTrace();
    }


}

在涡轮机窗口中执行一些操作后，我想保存这些数据（就像 getUserName 或 getStationName 一样）并在关闭涡轮机选项卡后重定向回用户窗口。如您所见，我很确定我应该使用stage.setOnCloseRequest((WindowEvent event1)，但不幸的是，我不知道在此方法中应该提供什么来成功调用回用户窗口。

标签： javajavafxstage

Answer 1

这就是我设法解决问题的方法：我在 userController 中创建了静态阶段对象：

public static Stage userStage;

并更改了调用用户窗口的登录方法，如下所示：

public void login(ActionEvent event) {
    try {
        if (loginModel.isLoggedIn(txtLogin.getText(), txtPassField.getText())) {
            lblDBStatus.setText("Username and password are correct");

            String fxmlFile = "/fxml/User.fxml";
            LOG.debug("Loading FXML for User view from: {}", fxmlFile);

            LOG.info("Hiding login page");
            ((Node) event.getSource()).getScene().getWindow().hide();


            userStage = new Stage();
            FXMLLoader loader = new FXMLLoader();
            Pane rootNode = loader.load(getClass().getResource(fxmlFile).openStream());
            UserController userController = (UserController) loader.getController();
            userController.getUserName(txtLogin.getText());

            LOG.info("Showing User page");
            Scene scene = new Scene(rootNode);
            scene.getStylesheets().add("/styles/user-controller.css");

            userStage.setTitle("WindOptimizer");
            userStage.setScene(scene);
            userStage.show();


        } else {
            lblDBStatus.setText("Username and password are incorrect");

        }
    } catch (SQLException | IOException e) {
        e.printStackTrace();
    }
}

然后在 userController 我调用 openTurbines 选项卡并设置焦点：

public void openTurbinesTab(ActionEvent event) {

    try {
        String fxmlFile = "/fxml/WindTurbines.fxml";
        LOG.debug("Loading FXML for Turbines view from: {}", fxmlFile);

        LOG.info("Hiding user page");

        Stage stage = new Stage();
        FXMLLoader loader = new FXMLLoader();
        Pane rootNode = loader.load(getClass().getResource(fxmlFile).openStream());

        TurbinesController turbinesController = (TurbinesController) loader.getController();
        turbinesController.getStationName(stationCB.getValue().toString());

        LOG.info("Showing Turbines page");
        Scene scene = new Scene(rootNode);
        scene.getStylesheets().add("/styles/turbines-controller.css");

        stage.setTitle("WindOptimizer");
        stage.setScene(scene);
        stage.initOwner(LoginController.userStage);
        stage.initModality(Modality.WINDOW_MODAL);
        stage.showAndWait();

    } catch (IOException e) {
        e.printStackTrace();
    }
}

它的工作！