JavaFX - 许多静态 FXML 控制器 [英] JavaFX - Many Static FXML Controllers

问题描述

存在一个 JavaFX 应用程序并且该应用程序从 扩展应用程序 的 Main.class 文件开始:

 public class Main extends Application {/*** 保持对主舞台的引用*/公共静态舞台舞台；/*** MainScene 控制器*/公共静态 MainScene mainSceneController;/*** 应用程序的捕获窗口*/公共静态 CaptureWindow captureWindowController；/*** 设置场景控制器*/公共静态 SettingsController settingsController;@覆盖公共无效开始(阶段主要)抛出异常{阶段 = 初级；.....//捕获窗口FXMLLoader loader1 = new FXMLLoader(getClass().getResource("/fxml/CaptureWindow.fxml"));loader1.load();captureWindowController = loader1.getController();//主场景mainSceneController = new MainScene();…………}}

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说明

正如你在上面看到的，我有 3 个 FXMLControllers(一个是可重用的 [extends StackPane]，其他的不是).我已经声明了所有的 static 因为我想从另一个 FXMLControllers 访问一个 FXMLController 的变量.我每次使用 JavaFX 时都使用这种策略，但我不这样做觉得不好...

我如何更改下面的代码，以便我可以从另一个 FXMLController 访问一个 FXMLController 的变量或方法?不使用 static 关键字可以吗?

考虑到控制器由不同的类表示，这些类可以位于不同的包中.

<小时>

在写这个问题之前我也看了

有关更多信息，您可以阅读(http://www.wildcrest.com/Potel/Portfolio/mvp.pdf)

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有关 JavaFX 的示例，请查看此处的 James_D 答案(ApplyingMVC 与 JavaFx)

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最后但并非最不重要的是看看评论这里:

最后:

如有任何不准确之处，请随时编辑.

A JavaFX application exists and the application is starting from the Main.class file which extends Application:

  public class Main extends Application {

    /**
     * Keep a reference to the main Stage
     */
    public static Stage                 stage;
    /**
     * MainScene Controller
     */
    public static MainScene             mainSceneController;
    /**
     * The Capture Window of the application
     */
    public static CaptureWindow         captureWindowController;
    /**
     * Settings Scene Controller
     */
    public static SettingsController    settingsController;

    @Override
    public void start(Stage primary) throws Exception {

        stage = primary;
        ..........

        // CaptureWindow
        FXMLLoader loader1 = new FXMLLoader(getClass().getResource("/fxml/CaptureWindow.fxml"));
        loader1.load();
        captureWindowController = loader1.getController();

        // MainScene
        mainSceneController = new MainScene();

        .........   
    }

  }

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Description

As you can see above I have 3 FXMLControllers(one is reusable[extends StackPane],others not).I have declared all of them static cause i want to access variables from one FXMLController from the other FXMLControllers.I use this strategy every time I use JavaFX and I don't think is good...

How I can change the code below so I can access variables or methods of one FXMLController from other FXMLController? Is that possible without using static keyword?

Consider that the Controllers are represented from different classes which can be in different packages.

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Also before writing this question I had a look Static @FXML variables in FXML Controller

解决方案

Actually the answer for this question seems a little bit complicated it has to do with MVC pattern and it's evolution until now.We will use MVP Pattern.

After a long discussion i got a link on this website http://martinfowler.com/eaaDev/uiArchs.html defining the historical evolution of the different patterns used from the old ages of Smalltalk until now.

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The actually solution is using Model Viewer Presenter Pattern(MVP) which can be visually described using these images:

For more you can read(http://www.wildcrest.com/Potel/Portfolio/mvp.pdf)

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For an example on JavaFX have a look on James_D answer here (Applying MVC With JavaFx)

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Last but not least have a look at the comments here:

Finally:

If anything is inaccurate feel free to edit.

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