JavaFX Scene Builder：创建新场景还是仅对特定元素进行更改？

Question

我对 JavaFX 和 Scene Builder 完全陌生。

我的程序设计如下图，右边是4个Button，左边是TabPane。问题是我不知道如何为右侧的每个按钮设计 TabPane。例如，如果用户单击 Button 1，它会显示 2 个选项卡 Option 1 - A 和 Option 1 - B。如果点击Button 2，则显示Option 2 - A和Option 2 - B等。

我怎样才能做到这一点？可以在一个场景中添加 4 个 TabPane 设计（通过显示隐藏元素在它们之间切换，例如使用 html 和 javascript）或者我需要制作第一个场景的 4 个副本并更改 TabPane他们每个人？

Answer 1

示例应用程序：此应用程序有一个主视图，其中包含一个锚定窗格和两个按钮。这个应用程序还有另外两个视图。当在主视图中按下顶部按钮时，它会将 viewOne 加载到主视图的锚定窗格中。当在主视图中按下底部按钮时，它会将 viewTwo 加载到主视图的锚定窗格中。

Main

import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;

/**
 *
 * @author blj0011
 */
public class JavaFXApplication63 extends Application
{

    @Override
    public void start(Stage stage) throws Exception
    {
        Parent root = FXMLLoader.load(getClass().getResource("FXMLDocument.fxml"));

        Scene scene = new Scene(root);

        stage.setScene(scene);
        stage.show();
    }

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args)
    {
        launch(args);
    }

}

BaseView Controller

import java.io.IOException;
import java.net.URL;
import java.util.ResourceBundle;
import java.util.logging.Level;
import java.util.logging.Logger;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.FXMLLoader;
import javafx.fxml.Initializable;
import javafx.scene.control.Button;
import javafx.scene.layout.AnchorPane;
import javafx.scene.layout.Pane;

/**
 *
 * @author blj0011
 */
public class FXMLDocumentController implements Initializable
{
    @FXML AnchorPane apMain;

    @FXML
    private void handleButtonAction(ActionEvent event)
    {
        try 
        {
            Pane newLoadedPane;

            Button tempButton = (Button)event.getSource();
            switch(tempButton.getId())
            {

                case "btnOne":
                    newLoadedPane =  FXMLLoader.load(getClass().getResource("viewOne.fxml"));
                    apMain.getChildren().add(newLoadedPane);
                    break;
                case "btnTwo":
                    newLoadedPane =  FXMLLoader.load(getClass().getResource("viewTwo.fxml"));
                    apMain.getChildren().add(newLoadedPane);
                    break;
            }
        }
        catch (IOException ex) {
            Logger.getLogger(FXMLDocumentController.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    @Override
    public void initialize(URL url, ResourceBundle rb)
    {
        // TODO
    }    

}

Baseview FXML

<?xml version="1.0" encoding="UTF-8"?>

<?import javafx.scene.control.Button?>
<?import javafx.scene.layout.AnchorPane?>

<AnchorPane id="AnchorPane" prefHeight="200" prefWidth="320" xmlns="http://javafx.com/javafx/8.0.111" xmlns:fx="http://javafx.com/fxml/1" fx:controller="javafxapplication63.FXMLDocumentController">
    <children>
        <Button fx:id="btnOne" layoutX="241.0" layoutY="24.0" onAction="#handleButtonAction" text="Click Me!" />
        <Button fx:id="btnTwo" layoutX="241.0" layoutY="56.0" onAction="#handleButtonAction" text="Click Me!" />
        <AnchorPane fx:id="apMain" maxHeight="200.0" maxWidth="200.0" minHeight="200.0" minWidth="200.0" prefHeight="200.0" prefWidth="200.0" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="120.0" AnchorPane.topAnchor="0.0" />
    </children>
</AnchorPane>

ViewOne Controller

import java.net.URL;
import java.util.ResourceBundle;
import javafx.fxml.Initializable;

/**
 * FXML Controller class
 *
 * @author blj0011
 */
public class ViewOneController implements Initializable
{

    /**
     * Initializes the controller class.
     */
    @Override
    public void initialize(URL url, ResourceBundle rb)
    {
        // TODO
    }    

}

ViewOne FXML

<?xml version="1.0" encoding="UTF-8"?>

<?import javafx.scene.control.Tab?>
<?import javafx.scene.control.TabPane?>
<?import javafx.scene.layout.AnchorPane?>

<AnchorPane fx:id="apOption2" maxHeight="200.0" maxWidth="200.0" minHeight="200.0" minWidth="200.0" prefHeight="200.0" prefWidth="200.0" xmlns="http://javafx.com/javafx/8.0.111" xmlns:fx="http://javafx.com/fxml/1" fx:controller="javafxapplication63.ViewOneController">
   <children>
      <TabPane layoutX="125.0" layoutY="83.0" prefHeight="200.0" prefWidth="200.0" tabClosingPolicy="UNAVAILABLE" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0">
        <tabs>
          <Tab text="1 - A">
            <content>
              <AnchorPane minHeight="0.0" minWidth="0.0" prefHeight="180.0" prefWidth="200.0" />
            </content>
          </Tab>
          <Tab text="1 - B">
            <content>
              <AnchorPane minHeight="0.0" minWidth="0.0" prefHeight="180.0" prefWidth="200.0" />
            </content>
          </Tab>
        </tabs>
      </TabPane>
   </children>
</AnchorPane>

ViewTwo Controller

import java.net.URL;
import java.util.ResourceBundle;
import javafx.fxml.Initializable;

/**
 * FXML Controller class
 *
 * @author blj0011
 */
public class ViewTwoController implements Initializable
{

    /**
     * Initializes the controller class.
     */
    @Override
    public void initialize(URL url, ResourceBundle rb)
    {
        // TODO
    }    

}

ViewTwo FXML

<?xml version="1.0" encoding="UTF-8"?>

<?import javafx.scene.control.Tab?>
<?import javafx.scene.control.TabPane?>
<?import javafx.scene.layout.AnchorPane?>

<AnchorPane fx:id="apOption2" maxHeight="200.0" maxWidth="200.0" minHeight="200.0" minWidth="200.0" prefHeight="200.0" prefWidth="200.0" xmlns="http://javafx.com/javafx/8.0.111" xmlns:fx="http://javafx.com/fxml/1" fx:controller="javafxapplication63.ViewTwoController">
   <children>
      <TabPane layoutX="24.0" layoutY="-14.0" prefHeight="200.0" prefWidth="200.0" tabClosingPolicy="UNAVAILABLE" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0">
        <tabs>
          <Tab text="2 - A">
            <content>
              <AnchorPane minHeight="0.0" minWidth="0.0" prefHeight="180.0" prefWidth="200.0" />
            </content>
          </Tab>
          <Tab text="2 - B">
            <content>
              <AnchorPane minHeight="0.0" minWidth="0.0" prefHeight="180.0" prefWidth="200.0" />
            </content>
          </Tab>
        </tabs>
      </TabPane>
   </children>
</AnchorPane>

在此应用程序中，当应用程序启动时，没有初始视图加载到主锚窗格中。您可能希望在应用启动后立即加载视图。

JavaFX Scene Builder：创建新场景还是仅对特定元素进行更改？

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