Java example source code file (TestFocusFreeze.java)

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Java - Java tags/keywords

actionlistener, atomicboolean, awt, component, dialog_button, event, frame_button, gui, jbutton, jdialog, jframe, keyboardfocusmanager, robot, runnable, runtimeexception, swing, testfocusfreeze, testkfm

The TestFocusFreeze.java Java example source code

/*
 * Copyright (c) 2008, 2013, 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
   @bug        6183877 6216005 6225560
   @library    ../../regtesthelpers
   @build      Util
   @summary    Tests that keyboard input doesn't freeze due to type-ahead problems
   @author     Denis.Mikhalkin, Anton.Tarasov: area=awt.focus
   @run        main TestFocusFreeze
*/

import java.awt.Component;
import java.awt.DefaultKeyboardFocusManager;
import java.awt.KeyboardFocusManager;
import java.awt.Robot;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.util.concurrent.atomic.AtomicBoolean;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JFrame;
import test.java.awt.regtesthelpers.Util;

public class TestFocusFreeze {
    private static JFrame frame;
    private static JDialog dialog;
    private static JButton dlgButton;
    private static JButton frameButton;
    private static AtomicBoolean lock = new AtomicBoolean(false);
    private static Robot robot = Util.createRobot();

    public static void main(String[] args) {
        boolean all_passed = true;
        KeyboardFocusManager testKFM = new TestKFM(robot);
        KeyboardFocusManager defKFM = KeyboardFocusManager.getCurrentKeyboardFocusManager();

        for (int i = 0; i < 10; i++) {
            test(testKFM, defKFM);
            Util.waitForIdle(robot);
            System.out.println("Iter " + i + ": " + (lock.get() ? "passed." : "failed!"));
            if (!lock.get()) {
                all_passed = false;
            }
        }
        if (!all_passed) {
            throw new RuntimeException("Test failed: not all iterations passed!");
        }
        System.out.println("Test passed.");
    }

    public static void test(final KeyboardFocusManager testKFM, final KeyboardFocusManager defKFM) {
        frame = new JFrame("Frame");
        dialog = new JDialog(frame, "Dialog", true);
        dlgButton = new JButton("Dialog_Button");
        frameButton = new JButton("Frame_Button");

        lock.set(false);

        dialog.add(dlgButton);
        dialog.setLocation(200, 0);
        dialog.pack();
        frame.add(frameButton);
        frame.pack();

        dlgButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                dialog.dispose();
                frame.dispose();
                synchronized (lock) {
                    lock.set(true);
                    lock.notifyAll();
                }
            }
        });

        frameButton.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent e) {
                    // Right before the dialog will be shown, there will be called
                    // enqueuKeyEvents() method. We are to catch it.
                    KeyboardFocusManager.setCurrentKeyboardFocusManager(testKFM);
                    dialog.setVisible(true);
                    KeyboardFocusManager.setCurrentKeyboardFocusManager(defKFM);
                }
            });

        Runnable showAction = new Runnable() {
            public void run() {
                frame.setVisible(true);
            }
        };
        if (!Util.trackFocusGained(frameButton, showAction, 2000, false)) {
            System.out.println("Test error: wrong initial focus!");
            return;
        }

        robot.keyPress(KeyEvent.VK_SPACE);
        robot.delay(50);
        robot.keyRelease(KeyEvent.VK_SPACE);

        Util.waitForCondition(lock, 2000);
        Util.waitForIdle(robot);
    }
}

class TestKFM extends DefaultKeyboardFocusManager {
    Robot robot;
    public TestKFM(Robot robot) {
        this.robot = robot;
    }
    protected synchronized void enqueueKeyEvents(long after, Component untilFocused) {
        super.enqueueKeyEvents(after, untilFocused);
        robot.delay(1);
        robot.keyPress(KeyEvent.VK_SPACE);
        robot.delay(50);
        robot.keyRelease(KeyEvent.VK_SPACE);
    }
}