Heavy Popups: correct way to find if popup has borders or not (win10 vs win11)

[VISTALL]

Windows 11 - no borders set to component(and rounded borders enabled)

Windows 10/Windows 11 (without round borders)

How I can determinate - popup with border or not?

• check flag com.formdev.flatlaf.ui.FlatPopupFactory#KEY_POPUP_USES_NATIVE_BORDER?
• Maybe laf - will set default border for popup (default impl always, if there no round bourders)? Without setting it from user code

import com.formdev.flatlaf.FlatLightLaf;

import javax.swing.*;
import javax.swing.border.EmptyBorder;
import java.awt.*;

/**
 * @author VISTALL
 * @since 2024-12-15
 */
public class BordersCheck {
    public static class MyPopupContent extends JPanel {
        public MyPopupContent() {
            super(new BorderLayout(5, 5));
           // setBorder(new LineBorder(Color.RED, 1));
            JLabel label = new JLabel("Some looooooooooooooooooooooooooooooong Text");
            label.setBorder(new EmptyBorder(5, 5, 5, 5));
            add(label);
        }
    }

    private static Popup ourPopup;

    public static void main(String[] args) {
        FlatLightLaf.setup();

        UIManager.put("Popup.forceHeavyWeight", true);

        SwingUtilities.invokeLater(() -> {
            JFrame frame = new JFrame();
            frame.setSize(500, 200);
            frame.setLocationRelativeTo(null);
            frame.setLocationByPlatform(false);

            JPanel panel = new JPanel();
            frame.add(panel);

            JCheckBox rounded = new JCheckBox("Enabled Rounded Borders");
            rounded.setSelected(true);


            JButton button = new JButton("Show Heavy Popup");
            button.addActionListener(e -> {
                if (ourPopup != null) {
                    ourPopup.hide();
                    ourPopup = null;
                }
                else {
                    Point loc = button.getLocationOnScreen();
                    MyPopupContent content = new MyPopupContent();
                    if (rounded.isSelected()) {
                        content.putClientProperty("Popup.borderCornerRadius", 6);
                    } else {
                        content.putClientProperty("Popup.borderCornerRadius", 0);
                    }
                    ourPopup = PopupFactory.getSharedInstance().getPopup(button, content, loc.x , loc.y + 50);
                    ourPopup.show();

                    System.out.println(content.getClientProperty("FlatLaf.internal.FlatPopupFactory.popupUsesNativeBorder"));
                }
            });

            JPanel container = new JPanel();
            container.add(rounded);
            container.add(button);

            panel.add(container);

            frame.setVisible(true);
        });
    }
}

[ringin31]

how to learn,, github