test/jdk/javax/swing/JOptionPane/bug4174551.java

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/*
 * @test
 * @bug 4174551 8346260
 * @summary JOptionPane should allow custom buttons
 * @library /java/awt/regtesthelpers
 * @build PassFailJFrame
 * @run main/manual bug4174551
 */
import java.awt.FlowLayout;
import java.awt.Font;
import javax.swing.JDialog;
import javax.swing.JOptionPane;
import javax.swing.UIManager;

public class bug4174551 {
    private static final String INSTRUCTIONS = """
          Two Message Dialog should pop up side-by-side
          one with a custom message font size 24 with message "HI 24"
          and another with default optionpane message font size with message "HI default"
          If custom message font size is not more than default message fontsize
          AND
          custom message buttonfont size is more than default message buttonfont size
          press "Fail" else press "Pass". """;

    public static void main(String[] args) throws Exception {
        PassFailJFrame.builder()
            .title("JOptionPane Instructions")
            .instructions(INSTRUCTIONS)
            .rows(8)
            .columns(40)
            .testUI(bug4174551::createTestUI)
            .build()
            .awaitAndCheck();
    }

    private static JDialog createTestUI() {
        JOptionPane defaultPane = new JOptionPane();
        defaultPane.setMessage("HI default");
        defaultPane.setMessageType(JOptionPane.INFORMATION_MESSAGE);
        UIManager.getDefaults().put("OptionPane.buttonFont", new Font("Dialog", Font.PLAIN, 10));
        UIManager.getDefaults().put("OptionPane.messageFont", new Font("Dialog", Font.PLAIN, 24));
        JOptionPane optionPane = new JOptionPane();
        optionPane.setMessage("HI 24!");
        optionPane.setMessageType(JOptionPane.INFORMATION_MESSAGE);
        JDialog dialog = new JDialog();
        dialog.setLayout(new FlowLayout());
        dialog.add(optionPane);
        dialog.add(defaultPane);
        dialog.pack();

        System.out.println(UIManager.getDefaults().get("OptionPane.buttonFont"));
        System.out.println(UIManager.getDefaults().get("OptionPane.messageFont"));
        return dialog;
    }
}