JAVAFX-控制器之间共享对象 [英] JAVAFX - share object between controllers

问题描述

请如何在控制器之间共享对象用户？我有一个TabPanelController。在初始化时，将带有对象User的数据发送到其他控制器。可以，但是在显示阶段之前我无法访问该对象。

Please how to share object User between Controllers? I have a TabPanelController. In initialization send to other controllers Data with object User. Its OK, but I cant acces to this object before stage shown.

在控制器在Stage之前加载控制器时，是否可以在Controller的initialize方法中访问Stage？或者如何在加载程序中处理onWindowShow（当显示Windows时，对象User已填充）？

Its possible acces to Stage in initialize method in controller, when controller is loaded before Stage? Or how handle onWindowShow in loader (When windows show, object User was filled)?

    @FXML
    private ActionController panelActionController;
    @FXML
    private StoreController panelStoreController;
    @FXML
    private ProfilesController panelProfilesController;
    @FXML
    private UsersController panelUsersController;

    @FXML
    @Override
    public void initialize(URL url, ResourceBundle resourceBundle) {
    Platform.runLater(new Runnable() {
        @Override
        public void run() {
            menuUserInfo.setText("           " + loggedInUser.getName() + " " +
                    loggedInUser.getForname() + " (" + loggedInUser.getLogin() + ")");
            menuUserInfo.setUserData(loggedInUser);
            panelActionController.setLoggedUser(loggedInUser);
            panelStoreController.setLoggedUser(loggedInUser);
            panelProfilesController.setLoggedUser(loggedInUser);
            panelUsersController.setLoggedUser(loggedInUser);
        }
    });
    }

在panelActionController中

In panelActionController

@Override
public void initialize(URL url, ResourceBundle resourceBundle) {
    System.out.println(loggedInUser); // NULL..
}

当我在舞台上按下任意按钮时，loggedUser不会空值。但是我需要在初始化期间按用户角色（管理员，用户）设置按钮，文本字段。

When i press any button in stage, loggedUser is not null. But i need set buttons, textfields by user role (Admin, User) during initialization.

推荐答案

已解决：

1。 fxml中的主TabPanel控制器中的注入控制器

必须具有带有fx：id = panelAction的根元素（例如GridPane）。
控制器必须命名：FX：GridPane的ID + word控制器： panelActionController

in fxml must have a root element (e.g. GridPane) with fx:id="panelAction". Controller must name: fx:id of GridPane + word Controller : panelActionController

   @FXML
    private ActionController panelActionController;
    @FXML
    private StoreController panelStoreController;
    @FXML
    private ProfilesController panelProfilesController;
    @FXML
    private UsersController panelUsersController;

2。我在主TabPanelController中为所有子控制器编写了吸气剂：

    public ActionController getActionController() {
        return panelActionController;
    }

    public StoreController getStoreController() {
        return panelStoreController;
    }

    public ProfilesController getProfilesController() {
        return panelProfilesController;
    }

    public UsersController getUsersController() {
        return panelUsersController;
    }

3。并在主TabPanelStage中（这里有Object loginInUser）获取所有控制器

TabPanelController tabPanelController = fxmlLoader.getController();

ActionController actionController = tabPanelController.getActionController();
StoreController storeController = tabPanelController.getStoreController();
ProfilesController profilesController = tabPanelController.getProfilesController();
UsersController usersController = tabPanelController.getUsersController();

4。然后：

actionController.setComponentsByRole(loggedInUser.getRole());

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