test/jdk/java/awt/Choice/ChoiceRemoveTest.java

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * This code is free software; you can redistribute it and/or modify it
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 *
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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/*
 * @test
 * @bug 4079027
 * @summary Removing an item dynamically from a Choice object breaks lower items.
 * @library /java/awt/regtesthelpers
 * @build PassFailJFrame
 * @run main/manual ChoiceRemoveTest
 */

import java.awt.Choice;
import java.awt.Frame;
import java.awt.GridLayout;
import java.awt.Label;
import java.awt.Panel;
import java.awt.event.ItemEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.lang.reflect.InvocationTargetException;

public class ChoiceRemoveTest extends Frame {
    Choice selector;
    static final String INSTRUCTIONS = """
            After window 'Choice Remove Test' appears wait for three seconds
            and then click on the choice. In popup there should be no
            'Choice A' variant. Try selecting each variant with mouse
            and verify by the log that the correct variant gets selected.
            If after selecting item in the list the correct item gets selected
            and correct item name appears in the log press Pass otherwise press Fail.
            """;

    public static void main(String[] argv) throws InterruptedException,
            InvocationTargetException {
        PassFailJFrame.builder()
                .title("Test Instructions")
                .testUI(ChoiceRemoveTest::new)
                .instructions(INSTRUCTIONS)
                .columns(40)
                .logArea()
                .build()
                .awaitAndCheck();
    }

    public ChoiceRemoveTest() {
        super("Choice Remove Test");
        Panel p;
        Label prompt;

        addWindowListener(new WindowAdapter() {
            @Override
            public void windowOpened(WindowEvent e) {
                super.windowOpened(e);
                new Thread(() -> {
                    try {
                        Thread.sleep(2000);
                    } catch (InterruptedException ignore) {
                    }
                    removeFirst();
                }).start();
            }
        });

        setLayout(new GridLayout());
        p = new Panel();

        prompt = new Label("Select different items including the last one");
        p.add(prompt);

        selector = new Choice();
        selector.add("Choice A");
        selector.add("Choice B");
        selector.add("Choice C");
        selector.add("Choice D");
        selector.add("Choice E");
        selector.addItemListener(e -> {
            if (e.getStateChange() == ItemEvent.SELECTED) {
                Object selected = e.getItem();
                PassFailJFrame.log(selected.toString());
            }
        });
        p.add(selector);
        add(p);
        pack();
    }

    public void removeFirst() {
        selector.remove("Choice A");
    }
}