与 Tab() 一起使用时，文本字段不会调整大小

Question

当我加载 TabContent.fxml 作为根场景，并且我是运行应用程序时，我在最大化 window 时看到，文本字段大小正在按预期重新增长，但是当我正在使用 Tab() 创建新选项卡并加载 TabContent.fxml，最大化 window 文本字段大小未调整大小并且已修复。

LearnFXML.java

package learnfxml;

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


public class LearnFXML 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();                
    }

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

}

FXMLDocument.fxml

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

<?import javafx.scene.control.Menu?>
<?import javafx.scene.control.MenuBar?>
<?import javafx.scene.control.MenuItem?>
<?import javafx.scene.control.SeparatorMenuItem?>
<?import javafx.scene.control.TabPane?>
<?import javafx.scene.input.KeyCodeCombination?>
<?import javafx.scene.layout.VBox?>

<VBox prefHeight="400.0" prefWidth="640.0" xmlns="http://javafx.com/javafx/11.0.1" xmlns:fx="http://javafx.com/fxml/1" fx:controller="learnfxml.FXMLDocumentController">
  <children>
    <MenuBar VBox.vgrow="NEVER">
      <menus>
        <Menu mnemonicParsing="false" text="File">
          <items>
                  <Menu mnemonicParsing="false" text="New">
                    <items>
                      <MenuItem mnemonicParsing="false" text="Generic" />
                      <MenuItem fx:id="menuItemNewMSDE" onAction="#openNewMSDETab" text="MSDE">
                           <accelerator>
                              <KeyCodeCombination alt="UP" code="N" control="DOWN" meta="UP" shift="UP" shortcut="UP" />
                           </accelerator>
                      </MenuItem>
                    </items>
                  </Menu>
            <MenuItem mnemonicParsing="false" text="Open…" />
            <Menu mnemonicParsing="false" text="Open Recent" />
            <SeparatorMenuItem mnemonicParsing="false" />
            <MenuItem mnemonicParsing="false" text="Close" />
            <MenuItem mnemonicParsing="false" text="Save" />
            <MenuItem mnemonicParsing="false" text="Save As…" />
            <MenuItem mnemonicParsing="false" text="Revert" />
            <SeparatorMenuItem mnemonicParsing="false" />
            <MenuItem mnemonicParsing="false" text="Preferences…" />
            <SeparatorMenuItem mnemonicParsing="false" />
            <MenuItem mnemonicParsing="false" text="Quit" />
          </items>
        </Menu>
        <Menu mnemonicParsing="false" text="Edit">
          <items>
            <MenuItem mnemonicParsing="false" text="Undo" />
            <MenuItem mnemonicParsing="false" text="Redo" />
            <SeparatorMenuItem mnemonicParsing="false" />
            <MenuItem mnemonicParsing="false" text="Cut" />
            <MenuItem mnemonicParsing="false" text="Copy" />
            <MenuItem mnemonicParsing="false" text="Paste" />
            <MenuItem mnemonicParsing="false" text="Delete" />
            <SeparatorMenuItem mnemonicParsing="false" />
            <MenuItem mnemonicParsing="false" text="Select All" />
            <MenuItem mnemonicParsing="false" text="Unselect All" />
          </items>
        </Menu>
        <Menu mnemonicParsing="false" text="Help">
          <items>
            <MenuItem mnemonicParsing="false" text="About MyHelloApp" />
          </items>
        </Menu>
      </menus>
    </MenuBar>
      <TabPane fx:id="tabPane" prefHeight="377.0" prefWidth="640.0" tabClosingPolicy="ALL_TABS" />
  </children>
</VBox>

FXMLDocumentController.java

package learnfxml;

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.event.Event;
import javafx.event.EventHandler;
import javafx.fxml.Initializable;
import javafx.scene.control.MenuItem;


import javafx.fxml.FXML;
import javafx.fxml.FXMLLoader;
import javafx.scene.Node;
import javafx.scene.control.Label;
import javafx.scene.control.Tab;
import javafx.scene.control.TabPane;
import javafx.scene.input.KeyCode;
import javafx.scene.input.KeyCodeCombination;
import javafx.scene.input.KeyCombination;
import javafx.scene.input.KeyEvent;

public class FXMLDocumentController implements Initializable {

    @FXML private MenuItem menuItemNewMSDE;
    @FXML private TabPane tabPane ;
    final KeyCombination keyShiftTab = new KeyCodeCombination(KeyCode.TAB, KeyCombination.SHIFT_ANY);

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

    public void openNewMSDETab() throws IOException
    {
        int numTabs = tabPane.getTabs().size();
        Tab tab = new Tab("Tab "+(numTabs+1));
        tabPane.getTabs().add(tab);
        tab.setContent((Node) FXMLLoader.load(this.getClass().getResource("TabContent.fxml")));

    }

    public void initialize(ActionEvent event) {

    }

}

TabContent.fxml

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

<?import javafx.scene.control.Button?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.control.TextField?>
<?import javafx.scene.layout.AnchorPane?>
<?import javafx.scene.layout.VBox?>


<AnchorPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="429.0" prefWidth="694.0" xmlns="http://javafx.com/javafx/11.0.1" xmlns:fx="http://javafx.com/fxml/1">
   <children>
      <VBox layoutX="39.0" layoutY="14.0" prefHeight="30.0" prefWidth="584.0" AnchorPane.leftAnchor="39.0" AnchorPane.rightAnchor="71.0">
         <children>
            <TextField prefHeight="25.0" prefWidth="641.0" />
         </children>
      </VBox>
      <Label layoutX="14.0" layoutY="20.0" text="URL" />
      <Button layoutX="628.0" layoutY="11.0" mnemonicParsing="false" prefHeight="30.0" prefWidth="59.0" text="POST" AnchorPane.rightAnchor="7.0" />
   </children>
</AnchorPane>

Answer 1

这里有 2 个问题：

VBox 不会垂直增长 TabPane。要解决此问题，您需要将 VBox.vgrow 属性设置为 ALWAYS

<TabPane fx:id="tabPane" VBox.vgrow="ALWAYS" prefHeight="377.0" prefWidth="640.0" tabClosingPolicy="ALL_TABS" />

您将 TabContent.fxml 中的 AnchorPane 限制为首选大小 (USE_PREF_SIZE)。将最大尺寸设置为 MAX_VALUE 以允许窗格增长：

<AnchorPane maxHeight="1.7976931348623157E308" maxWidth="1.7976931348623157E308" minHeight="-Infinity" minWidth="-Infinity" prefHeight="429.0" prefWidth="694.0" xmlns="http://javafx.com/javafx/11.0.1" xmlns:fx="http://javafx.com/fxml/1">

与 Tab() 一起使用时，文本字段不会调整大小

textfield not getting resized when used with Tab()

javafx

scenebuilder