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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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/*
 * @test
 * @bug 4219344
 * @summary tests that WINDOW_ACTIVATED events are generated properly
 * @key headful
 * @library /test/jdk/java/awt/regtesthelpers
 * @build Util
 * @run main WindowActivatedEventTest
 */

import test.java.awt.regtesthelpers.Util;

import java.awt.Dialog;
import java.awt.EventQueue;
import java.awt.Frame;
import java.awt.Robot;
import java.awt.Window;
import java.awt.event.WindowEvent;
import java.awt.event.WindowAdapter;
import java.lang.reflect.InvocationTargetException;
import java.util.Arrays;
import java.util.concurrent.atomic.AtomicInteger;

public class WindowActivatedEventTest {

    static Robot robot;
    static Frame frame;
    static Dialog dialog;

    public static void main(String[] args) throws Exception {
        robot = new Robot();

        try {
            EventQueue.invokeAndWait(WindowActivatedEventTest::createAndShowGUI);
            robot.waitForIdle();
            robot.delay(500);

            Util.clickOnComp(dialog, robot);

            robot.waitForIdle();
            robot.delay(500);

            for (int i = 0; i < 3 ; i++) {
                clickAndCheck(frame);
                clickAndCheck(dialog);
            }
        } finally {
            EventQueue.invokeAndWait(() -> {
                if (frame != null) {
                    frame.dispose();
                }
                if (dialog != null) {
                    dialog.dispose();
                }
            });
        }
    }

    private static void clickAndCheck(Window windowToFocus)
            throws InterruptedException, InvocationTargetException {
        Window oppositeWindow = (windowToFocus == frame) ? dialog : frame;

        System.out.println("Clicking on " + windowToFocus);

        EventQueue.invokeAndWait(() -> {
            if (windowToFocus.isFocused() || !oppositeWindow.isFocused()) {
                throw new RuntimeException("%s isFocused %b, %s isFocused %b".formatted(
                        windowToFocus.getName(), windowToFocus.isFocused(),
                        oppositeWindow.getName(), oppositeWindow.isFocused()
                ));
            }
        });

        WindowEventLogger windowLogger = WindowEventLogger.getFromWindow(windowToFocus);
        WindowEventLogger oppositeWindowLogger = WindowEventLogger.getFromWindow(oppositeWindow);

        windowLogger.resetCounters();
        oppositeWindowLogger.resetCounters();

        Util.clickOnComp(windowToFocus, robot);

        robot.delay(500);

        int windowActivatedCount = windowLogger.activatedCount.get();
        int windowDeactivatedCount = windowLogger.deactivatedCount.get();
        int oppositeWindowActivatedCount = oppositeWindowLogger.activatedCount.get();
        int oppositeWindowDeactivatedCount = oppositeWindowLogger.deactivatedCount.get();

        if (windowActivatedCount != 1
                || windowDeactivatedCount != 0
                || oppositeWindowActivatedCount != 0
                || oppositeWindowDeactivatedCount != 1) {
            throw new RuntimeException(
                    "Invalid activated/deactivated count: %s (%d/%d) / %s (%d/%d)"
                    .formatted(
                            windowToFocus.getName(),
                            windowActivatedCount,
                            windowDeactivatedCount,
                            oppositeWindow.getName(),
                            oppositeWindowActivatedCount,
                            oppositeWindowDeactivatedCount
                    ));
        }
    }

    private static void createAndShowGUI() {
        frame = new Frame("frame WindowActivatedEventTest");
        dialog = new Dialog(frame, "dialog WindowActivatedEventTest");

        frame.addWindowListener(new WindowEventLogger());
        dialog.addWindowListener(new WindowEventLogger());

        frame.setBounds(400, 0, 200, 200);
        frame.setVisible(true);

        dialog.setBounds(400, 200, 200, 200);
        dialog.setVisible(true);
    }

    private static class WindowEventLogger extends WindowAdapter {
        final AtomicInteger activatedCount = new AtomicInteger(0);
        final AtomicInteger deactivatedCount = new AtomicInteger(0);

        public void windowActivated(WindowEvent e) {
            activatedCount.incrementAndGet();
            System.out.println(e);
        }

        public void windowDeactivated(WindowEvent e) {
            deactivatedCount.incrementAndGet();
            System.out.println(e);
        }

        public void resetCounters() {
            activatedCount.set(0);
            deactivatedCount.set(0);
        }

        public static WindowEventLogger getFromWindow(Window window) {
            return (WindowEventLogger) Arrays
                    .stream(window.getWindowListeners())
                    .filter(listener -> listener instanceof WindowEventLogger)
                    .findFirst().get();
        }
    }
}