如何使Java Swing组件填充可用空间？

Question

我似乎无法使我的Java Swing组件正确地协同工作.

我想要做的是,JPanel填充JTabbedPane内的所有可用空间.目前,我的设置如下:

public class Gui extends JFrame {
    private final EventBus eventBus = EventBus.getInstance();
    private final ToolkitUtil toolkitUtil;
    private final Menu menu;
    private final InfoBar infoBar;
    private final JTabbedPane pane;

    ...

    private void buildLayout() {
        GridBagConstraints gbc = new GridBagConstraints();

        setJMenuBar(menu);

        add(pane, BorderLayout.CENTER);
        add(infoBar, BorderLayout.SOUTH);

        pane.addTab("Plugins", new PluginPanel());
    }
}

public class PluginPanel extends JPanel {
    private final JPanel modelPanel;
    private final JPanel editorPanel;

    public PluginPanel() {
        setLayout(new GridBagLayout());

        modelPanel = new JPanel(new GridBagLayout());
        editorPanel = new JPanel(new GridBagLayout());

        buildLayout();
    }

    private void buildLayout() {
        GridBagConstraints gbc = new GridBagConstraints();

        modelPanel.setBorder(BorderFactory.createTitledBorder("Models"));
        editorPanel.setBorder(BorderFactory.createTitledBorder("Editors"));

        gbc.gridx = 0;
        gbc.fill = GridBagConstraints.BOTH;

        modelPanel.add(new JLabel("test label"), gbc);
        add(modelPanel, gbc);

        gbc.gridx = 1;
        add(editorPanel, gbc);
    }
}

这将创建一个我所需大小的窗口(与屏幕大小成比例,不包含在上面的代码中).放置在中心的选项卡面板将展开以填充所需的所有空间,这正是我想要的.但是,我在选项卡面板中添加的面板仅与其内容一样大.如果我添加标签或任何东西,它只会增加与组件一样大.我希望它们始终可以扩展以填充选项卡面板.

Answer 1

最简单的方法是使用a BorderLayout并将组件放在CENTER位置.

Answer 2

尝试将GridBagConstraints的权重设置为非零值:

gbc.weightx = gbc.weighty = 1.0;