test/jdk/java/awt/Focus/AppletInitialFocusTest/AppletInitialFocusTest.java

/*
 * Copyright (c) 2008, 2018, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/*
  @test
  @key headful
  @bug 4041703 4096228 4025223 4260929
  @summary Ensures that appletviewer sets a reasonable default focus for an Applet on start
  @library ../../regtesthelpers
  @build   Util
  @run main AppletInitialFocusTest
*/

import java.awt.Button;
import java.awt.FlowLayout;
import java.awt.Frame;
import java.awt.Robot;
import test.java.awt.regtesthelpers.Util;

public class AppletInitialFocusTest extends Frame {

    Robot robot = Util.createRobot();
    Button button = new Button("Button");

    public static void main(final String[] args) throws Exception {
        AppletInitialFocusTest app = new AppletInitialFocusTest();
        app.init();
        app.start();
    }

    public void init() {
        setSize(200, 200);
        setLocationRelativeTo(null);
        setLayout(new FlowLayout());
        add(button);
        setVisible(true);
    }

    public void start() throws Exception {
        Thread thread = new Thread(new Runnable() {
                public void run() {
                    Util.waitTillShown(button);
                    robot.delay(1000); // delay the thread to let EDT to start dispatching focus events
                    Util.waitForIdle(robot);
                    if (!button.hasFocus()) {
                        throw new RuntimeException("Appletviewer doesn't set default focus correctly.");
                    }
                }
            });
        thread.start();
        thread.join();
    }
}