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/*
* Copyright (c) 2002, 2024, 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 4697451
* @summary Test that there is no race between focus component in inactive window and window activation
* @key headful
* @run main InactiveFocusRace
*/
import java.awt.Button;
import java.awt.FlowLayout;
import java.awt.Frame;
import java.awt.KeyboardFocusManager;
import java.awt.Point;
import java.awt.Robot;
import java.awt.Toolkit;
import java.awt.event.FocusAdapter;
import java.awt.event.FocusEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.event.InputEvent;
public class InactiveFocusRace {
static Frame activeFrame, inactiveFrame;
Button activeButton, inactiveButton1, inactiveButton2;
Semaphore sema;
final static int TIMEOUT = 10000;
public static void main(String[] args) throws Exception {
try {
InactiveFocusRace test = new InactiveFocusRace();
test.init();
test.start();
} finally {
if (activeFrame != null) {
activeFrame.dispose();
}
if (inactiveFrame != null) {
inactiveFrame.dispose();
}
}
}
public void init() {
activeButton = new Button("active button");
inactiveButton1 = new Button("inactive button1");
inactiveButton2 = new Button("inactive button2");
activeFrame = new Frame("Active frame");
inactiveFrame = new Frame("Inactive frame");
inactiveFrame.setLayout(new FlowLayout());
activeFrame.add(activeButton);
inactiveFrame.add(inactiveButton1);
inactiveFrame.add(inactiveButton2);
activeFrame.pack();
activeFrame.setLocation(300, 10);
inactiveFrame.pack();
inactiveFrame.setLocation(300, 300);
sema = new Semaphore();
inactiveButton1.addFocusListener(new FocusAdapter() {
public void focusGained(FocusEvent e) {
System.err.println("Button 1 got focus");
}
});
inactiveButton2.addFocusListener(new FocusAdapter() {
public void focusGained(FocusEvent e) {
System.err.println("Button2 got focus");
sema.raise();
}
});
activeFrame.addWindowListener(new WindowAdapter() {
public void windowActivated(WindowEvent e) {
System.err.println("Window activated");
sema.raise();
}
});
}
public void start() {
Robot robot = null;
try {
robot = new Robot();
} catch (Exception e) {
throw new RuntimeException("Unable to create robot");
}
inactiveFrame.setVisible(true);
activeFrame.setVisible(true);
// Wait for active frame to become active
try {
sema.doWait(TIMEOUT);
} catch (InterruptedException ie) {
throw new RuntimeException("Wait was interrupted");
}
if (!sema.getState()) {
throw new RuntimeException("Frame doesn't become active on show");
}
sema.setState(false);
// press on second button in inactive frame
Point loc = inactiveButton2.getLocationOnScreen();
robot.mouseMove(loc.x+5, loc.y+5);
robot.mousePress(InputEvent.BUTTON1_DOWN_MASK);
robot.mouseRelease(InputEvent.BUTTON1_DOWN_MASK);
// after all second button should be focus owner.
try {
sema.doWait(TIMEOUT);
} catch (InterruptedException ie) {
throw new RuntimeException("Wait was interrupted");
}
if (!sema.getState()) {
throw new RuntimeException("Button2 didn't become focus owner");
}
Toolkit.getDefaultToolkit().sync();
robot.waitForIdle();
if (!(KeyboardFocusManager.getCurrentKeyboardFocusManager().getFocusOwner() == inactiveButton2)) {
throw new RuntimeException("Button2 should be the focus owner after all");
}
}
}
class Semaphore {
boolean state = false;
int waiting = 0;
public Semaphore() {
}
public void doWait() throws InterruptedException {
synchronized(this) {
if (state) return;
waiting++;
wait();
waiting--;
}
}
public void doWait(int timeout) throws InterruptedException {
synchronized(this) {
if (state) return;
waiting++;
wait(timeout);
waiting--;
}
}
public void raise() {
synchronized(this) {
state = true;
if (waiting > 0) {
notifyAll();
}
}
}
public boolean getState() {
synchronized(this) {
return state;
}
}
public void setState(boolean newState) {
synchronized(this) {
state = newState;
}
}
}
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