如何使组件填充 JavaFX 上的拆分窗格？

Question

我想在 JavaFX 拆分窗格的一侧添加一个组件。如何让它填满拆分面板的侧面板？ hgrow 和 vgrow 似乎在拆分窗格中不可用。

事实上，我正在尝试在拆分窗格中添加带标题的窗格。这是代码：

public void start(Stage stage) throws Exception {
    TitledPane titledPane1 = new TitledPane("Panel 1", new Group());
    TitledPane titledPane2 = new TitledPane("Panel 2", new Group());

    SplitPane rootPane = new SplitPane();
    rootPane.getItems().add(titledPane1);
    rootPane.getItems().add(titledPane2);

    Scene scene = new Scene(rootPane);
    stage.setWidth(400);
    stage.setHeight(300);
    stage.setScene(scene);
    stage.show();

}

Answer 1

你应该使用 Pane instead of a Group.

Group 上的 javadoc 说，

A Group will take on the collective bounds of its children and is not directly resizable.

编辑（根据用户评论）

这里的问题不在于 Pane，而在于 TitledPane，因为 TitledPane 扩展了 Labeled

您可以使用

将 titledPane 的高度与 splitpane 的高度绑定

titledPane1.prefHeightProperty().bind(rootPane.heightProperty());

一个带有 TiltledPane 高度绑定的工作示例，另一个带有 Pane 添加到 SplitPane

public class StoreNumbers extends Application {

    public void start(Stage stage) throws Exception {
        Pane pane1 = new Pane();
        Pane pane2 = new Pane();
        TitledPane titledPane1 = new TitledPane("Panel 1", pane1);
        TitledPane titledPane2 = new TitledPane("Panel 2", pane2);
        SplitPane rootPane = new SplitPane();
        rootPane.getItems().add(titledPane1);
        rootPane.getItems().add(pane2);

        Scene scene = new Scene(rootPane);
        stage.setWidth(400);
        stage.setHeight(300);
        stage.setScene(scene);
        stage.show();
        pane1.setBorder(new Border(new BorderStroke(Color.BLACK, BorderStrokeStyle.SOLID, null, null)));
        pane2.setBorder(new Border(new BorderStroke(Color.BLACK, BorderStrokeStyle.SOLID, null, null)));
        titledPane1.setBorder(new Border(new BorderStroke(Color.BLACK, BorderStrokeStyle.DASHED, null, null)));
        titledPane2.setBorder(new Border(new BorderStroke(Color.BLACK, BorderStrokeStyle.DASHED, null, null)));
        titledPane1.prefHeightProperty().bind(rootPane.heightProperty());
    }

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

Answer 2

titledPane1.setMaxHeight(Double.MAX_VALUE);

也解决了我遇到的问题

如何使组件填充 JavaFX 上的拆分窗格？

How to make a component fill a splitpane on JavaFX?

javafx