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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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import java.awt.Canvas;
import java.awt.Color;
import java.awt.Graphics2D;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;

/*
 * @test
 * @bug 8235404
 * @summary Checks that JOptionPane doesn't block drawing strings on another component
 * @library /java/awt/regtesthelpers
 * @build PassFailJFrame
 * @run main/manual OptionPaneInput
 */
public class OptionPaneInput {
    private static JFrame f;
    private static Canvas c;
    private static JTextField t;
    private static final String instructions = """
            1. Type "test" into the message dialog.
            2. Press enter key.
            3. Press OK button.
            4. If the OptionPaneInput frame has test drawn on it, pass. Otherwise fail.
            """;

    public static void main(String[] args) throws Exception {
        PassFailJFrame testFrame = new PassFailJFrame(instructions);

        SwingUtilities.invokeAndWait(() -> createGUI());
        testFrame.awaitAndCheck();
    }

    public static void createGUI() {
        f = new JFrame("OptionPaneInput");
        c = new Canvas();
        t = new JTextField();
        f.add(c);

        t.addActionListener(e -> {
            String text = t.getText();
            Graphics2D g2 = (Graphics2D)(c.getGraphics());
            g2.setColor(Color.BLACK);
            g2.drawString(text, 10, 10);
            System.out.println("drawing "+text);
            g2.dispose();
        });

        f.setSize(300, 100);
        PassFailJFrame.addTestWindow(f);
        PassFailJFrame.positionTestWindow(f, PassFailJFrame.Position.HORIZONTAL);
        f.setVisible(true);

        JOptionPane.showMessageDialog(f, t);
    }
}