test/jdk/java/awt/Window/ShowWindowTest/ShowWindowTest.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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/*
 * @test
 * @bug 4084997
 * @summary See if Window can be created without its size explicitly set
 * @library /java/awt/regtesthelpers
 * @build PassFailJFrame
 * @run main/manual ShowWindowTest
 */

import java.awt.Button;
import java.awt.FlowLayout;
import java.awt.Frame;
import java.awt.Label;
import java.awt.Window;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

public class ShowWindowTest implements ActionListener
{
    private static Window window;
    private static Button showButton;
    private static Button hideButton;

    public static void main(String[] args) throws Exception {
        String INSTRUCTIONS = """
            1. You should see a Frame with a "Show" and a "Hide" button in it.
            2. Click on the "Show" button. A window with a "Hello World" Label
            should appear
            3. If the window does not appear, the test failed, otherwise passed.
            """;

        PassFailJFrame.builder()
            .title("Test Instructions")
            .instructions(INSTRUCTIONS)
            .columns(40)
            .testUI(ShowWindowTest::createUI)
            .build()
            .awaitAndCheck();
    }

    private static Frame createUI() {
        Frame frame = new Frame("ShowWindowTest");
        frame.setLayout(new FlowLayout());
        frame.setSize(100,100);
        frame.add(showButton = new Button("Show"));
        frame.add(hideButton = new Button("Hide"));

        ActionListener handler = new ShowWindowTest();
        showButton.addActionListener(handler);
        hideButton.addActionListener(handler);

        window = new Window(frame);
        window.add("Center", new Label("Hello World"));
        window.setLocationRelativeTo(null);
        return frame;
    }

    public void actionPerformed(ActionEvent e) {
        if (e.getSource() == showButton) {
            window.pack();
            window.setVisible(true);
        } else if (e.getSource() == hideButton)
            window.setVisible(false);
    }
}